static ngx_int_t ngx_http_gridfs_mongod_connect(ngx_conf_t* directive, ngx_http_gridfs_loc_conf_t* gridfs_conf) {
mongo_connection_options options;
bson empty;
bson_bool_t error;
char* test;
if (gridfs_conf->mongod_conn->connected) {
ngx_conf_log_error(NGX_LOG_ERR, directive, 0,
"Mongo Connection is duplicate");
return NGX_ERROR;
}
/* Connect to a mongod */
ngx_cpystrn( (u_char*)options.host,
gridfs_conf->mongod_host.data,
gridfs_conf->mongod_host.len + 1 );
options.port = gridfs_conf->mongod_port;
switch (mongo_connect( gridfs_conf->mongod_conn, &options )) {
case mongo_conn_success:
break;
case mongo_conn_bad_arg:
ngx_conf_log_error(NGX_LOG_ERR, directive, 0,
"Mongo Exception: Bad Arguments");
return NGX_ERROR;
case mongo_conn_no_socket:
ngx_conf_log_error(NGX_LOG_ERR, directive, 0,
"Mongo Exception: No Socket");
return NGX_ERROR;
case mongo_conn_fail:
ngx_conf_log_error(NGX_LOG_ERR, directive, 0,
"Mongo Exception: Connection Failure %s:%i;",
options.host,options.port/*
gridfs_conf->mongod_port*/);
return NGX_ERROR;
case mongo_conn_not_master:
ngx_conf_log_error(NGX_LOG_ERR, directive, 0,
"Mongo Exception: Not Master");
return NGX_ERROR;
default:
ngx_conf_log_error(NGX_LOG_ERR, directive, 0,
"Mongo Exception: Unknown Error");
return NGX_ERROR;
}
/* Authenticate with the user and password */
if (gridfs_conf->mongod_user.data != NULL && gridfs_conf->mongod_pass.data != NULL) {
if (!mongo_cmd_authenticate(gridfs_conf->mongod_conn,
(const char*)gridfs_conf->gridfs_db.data,
(const char*)gridfs_conf->mongod_user.data,
(const char*)gridfs_conf->mongod_pass.data)) {
ngx_conf_log_error(NGX_LOG_ERR, directive, 0,
"Invalid mongo user/pass: %s/%s",
gridfs_conf->mongod_user.data,
gridfs_conf->mongod_pass.data);
return NGX_ERROR;
}
}
/* Run a test command to test authentication. */
test = (char*)malloc( gridfs_conf->gridfs_db.len + sizeof(".test"));
ngx_cpystrn((u_char*)test, (u_char*)gridfs_conf->gridfs_db.data, gridfs_conf->gridfs_db.len+1);
ngx_cpystrn((u_char*)(test+gridfs_conf->gridfs_db.len),(u_char*)".test", sizeof(".test"));
bson_empty(&empty);
mongo_find(gridfs_conf->mongod_conn, test, &empty, NULL, 0, 0, 0);
error = mongo_cmd_get_last_error(gridfs_conf->mongod_conn, (char*)gridfs_conf->gridfs_db.data, NULL);
free(test);
if (error) {
ngx_conf_log_error(NGX_LOG_ERR, directive, 0, "Authentication Required");
return NGX_ERROR;
}
return NGX_OK;
}
static ngx_inline ngx_int_t
make_content_buf(
ngx_http_request_t *r, ngx_buf_t **pb,
ngx_http_fancyindex_loc_conf_t *alcf)
{
ngx_http_fancyindex_entry_t *entry;
off_t length;
size_t len, root, copy, allocated;
u_char *filename, *last, scale;
ngx_tm_t tm;
ngx_array_t entries;
ngx_time_t *tp;
ngx_uint_t i;
ngx_int_t size;
ngx_str_t path;
ngx_dir_t dir;
ngx_buf_t *b;
static char *months[] = {
"Jan", "Feb", "Mar", "Apr", "May", "Jun",
"Jul", "Aug", "Sep", "Oct", "Nov", "Dec",
};
/*
* NGX_DIR_MASK_LEN is lesser than NGX_HTTP_FANCYINDEX_PREALLOCATE
*/
if ((last = ngx_http_map_uri_to_path(r, &path, &root,
NGX_HTTP_FANCYINDEX_PREALLOCATE)) == NULL)
return NGX_HTTP_INTERNAL_SERVER_ERROR;
allocated = path.len;
path.len = last - path.data - 1;
path.data[path.len] = '\0';
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"http fancyindex: \"%s\"", path.data);
if (ngx_open_dir(&path, &dir) == NGX_ERROR) {
ngx_int_t rc, err = ngx_errno;
ngx_uint_t level;
if (err == NGX_ENOENT || err == NGX_ENOTDIR || err == NGX_ENAMETOOLONG) {
level = NGX_LOG_ERR;
rc = NGX_HTTP_NOT_FOUND;
} else if (err == NGX_EACCES) {
level = NGX_LOG_ERR;
rc = NGX_HTTP_FORBIDDEN;
} else {
level = NGX_LOG_CRIT;
rc = NGX_HTTP_INTERNAL_SERVER_ERROR;
}
ngx_log_error(level, r->connection->log, err,
ngx_open_dir_n " \"%s\" failed", path.data);
return rc;
}
#if (NGX_SUPPRESS_WARN)
/* MSVC thinks 'entries' may be used without having been initialized */
ngx_memzero(&entries, sizeof(ngx_array_t));
#endif /* NGX_SUPPRESS_WARN */
if (ngx_array_init(&entries, r->pool, 40,
sizeof(ngx_http_fancyindex_entry_t)) != NGX_OK)
return ngx_http_fancyindex_error(r, &dir, &path);
filename = path.data;
filename[path.len] = '/';
/* Read directory entries and their associated information. */
for (;;) {
ngx_set_errno(0);
if (ngx_read_dir(&dir) == NGX_ERROR) {
ngx_int_t err = ngx_errno;
if (err != NGX_ENOMOREFILES) {
ngx_log_error(NGX_LOG_CRIT, r->connection->log, err,
ngx_read_dir_n " \"%V\" failed", &path);
return ngx_http_fancyindex_error(r, &dir, &path);
}
break;
}
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"http fancyindex file: \"%s\"", ngx_de_name(&dir));
len = ngx_de_namelen(&dir);
if (ngx_de_name(&dir)[0] == '.')
continue;
#if NGX_PCRE
{
ngx_str_t str = { len, ngx_de_name(&dir) };
if (alcf->ignore && ngx_regex_exec_array(alcf->ignore, &str,
r->connection->log)
!= NGX_DECLINED)
{
continue;
}
}
#else /* !NGX_PCRE */
if (alcf->ignore) {
u_int match_found = 0;
ngx_str_t *s = alcf->ignore->elts;
for (i = 0; i < alcf->ignore->nelts; i++, s++) {
if (ngx_strcmp(ngx_de_name(&dir), s->data) == 0) {
match_found = 1;
break;
}
}
if (match_found) {
continue;
}
}
#endif /* NGX_PCRE */
if (!dir.valid_info) {
/* 1 byte for '/' and 1 byte for terminating '\0' */
if (path.len + 1 + len + 1 > allocated) {
allocated = path.len + 1 + len + 1
+ NGX_HTTP_FANCYINDEX_PREALLOCATE;
if ((filename = ngx_palloc(r->pool, allocated)) == NULL)
return ngx_http_fancyindex_error(r, &dir, &path);
last = ngx_cpystrn(filename, path.data, path.len + 1);
*last++ = '/';
}
ngx_cpystrn(last, ngx_de_name(&dir), len + 1);
if (ngx_de_info(filename, &dir) == NGX_FILE_ERROR) {
ngx_int_t err = ngx_errno;
if (err != NGX_ENOENT) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, err,
ngx_de_info_n " \"%s\" failed", filename);
continue;
}
if (ngx_de_link_info(filename, &dir) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_CRIT, r->connection->log, ngx_errno,
ngx_de_link_info_n " \"%s\" failed", filename);
return ngx_http_fancyindex_error(r, &dir, &path);
}
}
}
if ((entry = ngx_array_push(&entries)) == NULL)
return ngx_http_fancyindex_error(r, &dir, &path);
entry->name.len = len;
entry->name.data = ngx_palloc(r->pool, len + 1);
if (entry->name.data == NULL)
return ngx_http_fancyindex_error(r, &dir, &path);
ngx_cpystrn(entry->name.data, ngx_de_name(&dir), len + 1);
entry->escape = 2 * ngx_fancyindex_escape_uri(NULL,
ngx_de_name(&dir),
len);
entry->dir = ngx_de_is_dir(&dir);
entry->mtime = ngx_de_mtime(&dir);
entry->size = ngx_de_size(&dir);
entry->utf_len = (r->headers_out.charset.len == 5 &&
ngx_strncasecmp(r->headers_out.charset.data, (u_char*) "utf-8", 5) == 0)
? ngx_utf8_length(entry->name.data, entry->name.len)
: len;
}
if (ngx_close_dir(&dir) == NGX_ERROR) {
ngx_log_error(NGX_LOG_ALERT, r->connection->log, ngx_errno,
ngx_close_dir_n " \"%s\" failed", &path);
}
/*
* Calculate needed buffer length.
*/
len = r->uri.len
+ ngx_sizeof_ssz(t05_body2)
+ ngx_sizeof_ssz(t06_list1)
+ ngx_sizeof_ssz(t07_list2)
;
entry = entries.elts;
for (i = 0; i < entries.nelts; i++) {
/*
* Genearated table rows are as follows, unneeded whitespace
* is stripped out:
*
* <tr class="X">
* <td><a href="U">fname</a></td>
* <td>size</td><td>date</td>
* </tr>
*/
len += ngx_sizeof_ssz("<tr class=\"X\"><td><a href=\"")
+ entry[i].name.len + entry[i].escape /* Escaped URL */
+ ngx_sizeof_ssz("\">")
+ entry[i].name.len + entry[i].utf_len
+ NGX_HTTP_FANCYINDEX_NAME_LEN + ngx_sizeof_ssz(">")
+ ngx_sizeof_ssz("</a></td><td>")
+ 20 /* File size */
+ ngx_sizeof_ssz("</td><td>")
+ ngx_sizeof_ssz(" 28-Sep-1970 12:00 ")
+ ngx_sizeof_ssz("</td></tr>\n")
+ 2 /* CR LF */
;
}
if ((b = ngx_create_temp_buf(r->pool, len)) == NULL)
return NGX_HTTP_INTERNAL_SERVER_ERROR;
/* Sort entries, if needed */
if (entries.nelts > 1) {
ngx_qsort(entry, (size_t) entries.nelts,
sizeof(ngx_http_fancyindex_entry_t),
ngx_http_fancyindex_cmp_entries);
}
b->last = ngx_cpymem_str(b->last, r->uri);
b->last = ngx_cpymem_ssz(b->last, t05_body2);
b->last = ngx_cpymem_ssz(b->last, t06_list1);
tp = ngx_timeofday();
for (i = 0; i < entries.nelts; i++) {
static const char _evenodd[] = { 'e', 'o' };
b->last = ngx_cpymem_ssz(b->last, "<tr class=\"");
*b->last++ = _evenodd[i & 0x01];
/*
* Alternative implementation:
* *b->last++ = (i & 0x01) ? 'e' : 'o';
*/
b->last = ngx_cpymem_ssz(b->last, "\"><td><a href=\"");
if (entry[i].escape) {
ngx_fancyindex_escape_uri(b->last,
entry[i].name.data,
entry[i].name.len);
b->last += entry[i].name.len + entry[i].escape;
} else {
b->last = ngx_cpymem_str(b->last, entry[i].name);
}
if (entry[i].dir) {
*b->last++ = '/';
}
*b->last++ = '"';
*b->last++ = '>';
len = entry[i].utf_len;
if (entry[i].name.len - len) {
if (len > NGX_HTTP_FANCYINDEX_NAME_LEN) {
copy = NGX_HTTP_FANCYINDEX_NAME_LEN - 3 + 1;
} else {
copy = NGX_HTTP_FANCYINDEX_NAME_LEN + 1;
}
b->last = ngx_utf8_cpystrn(b->last, entry[i].name.data,
copy, entry[i].name.len);
last = b->last;
} else {
b->last = ngx_cpystrn(b->last, entry[i].name.data,
NGX_HTTP_FANCYINDEX_NAME_LEN + 1);
last = b->last - 3;
}
if (len > NGX_HTTP_FANCYINDEX_NAME_LEN) {
b->last = ngx_cpymem_ssz(last, "..></a></td><td>");
} else {
if (entry[i].dir && NGX_HTTP_FANCYINDEX_NAME_LEN - len > 0) {
*b->last++ = '/';
len++;
}
b->last = ngx_cpymem_ssz(b->last, "</a></td><td>");
}
if (alcf->exact_size) {
if (entry[i].dir) {
*b->last++ = '-';
} else {
b->last = ngx_sprintf(b->last, "%19O", entry[i].size);
}
} else {
if (entry[i].dir) {
*b->last++ = '-';
} else {
length = entry[i].size;
if (length > 1024 * 1024 * 1024 - 1) {
size = (ngx_int_t) (length / (1024 * 1024 * 1024));
if ((length % (1024 * 1024 * 1024))
> (1024 * 1024 * 1024 / 2 - 1))
{
size++;
}
scale = 'G';
} else if (length > 1024 * 1024 - 1) {
size = (ngx_int_t) (length / (1024 * 1024));
if ((length % (1024 * 1024)) > (1024 * 1024 / 2 - 1)) {
size++;
}
scale = 'M';
} else if (length > 9999) {
size = (ngx_int_t) (length / 1024);
if (length % 1024 > 511) {
size++;
}
scale = 'K';
} else {
size = (ngx_int_t) length;
scale = '\0';
}
if (scale) {
b->last = ngx_sprintf(b->last, "%6i%c", size, scale);
} else {
b->last = ngx_sprintf(b->last, " %6i", size);
}
}
}
ngx_gmtime(entry[i].mtime + tp->gmtoff * 60 * alcf->localtime, &tm);
b->last = ngx_sprintf(b->last, "</td><td>%02d-%s-%d %02d:%02d</td></tr>",
tm.ngx_tm_mday,
months[tm.ngx_tm_mon - 1],
tm.ngx_tm_year,
tm.ngx_tm_hour,
tm.ngx_tm_min);
*b->last++ = CR;
*b->last++ = LF;
}
/* Output table bottom */
b->last = ngx_cpymem_ssz(b->last, t07_list2);
*pb = b;
return NGX_OK;
}
ngx_int_t ngx_http_parse_complex_uri(ngx_http_request_t *r)
{
u_char c, ch, decoded, *p, *u;
enum
{
sw_usual = 0,
sw_slash,
sw_dot,
sw_dot_dot,
#if (WIN32)
sw_dot_dot_dot,
#endif
sw_quoted,
sw_quoted_second
} state, quoted_state;
decoded = '\0';
quoted_state = sw_usual;
state = sw_usual;
p = r->uri_start;
u = r->uri.data;
r->uri_ext = NULL;
ch = *p++;
while (p < r->uri_start + r->uri.len + 1)
{
ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"s:%d in:'%x:%c', out:'%c'", state, ch, ch, *u);
switch (state)
{
case sw_usual:
switch(ch)
{
case '/':
r->uri_ext = NULL;
state = sw_slash;
*u++ = ch;
break;
case '%':
quoted_state = state;
state = sw_quoted;
break;
case '.':
r->uri_ext = u + 1;
default:
*u++ = ch;
break;
}
ch = *p++;
break;
case sw_slash:
switch(ch)
{
case '/':
break;
case '.':
state = sw_dot;
*u++ = ch;
break;
case '%':
quoted_state = state;
state = sw_quoted;
break;
default:
state = sw_usual;
*u++ = ch;
break;
}
ch = *p++;
break;
case sw_dot:
switch(ch)
{
case '/':
state = sw_slash;
u--;
break;
case '.':
state = sw_dot_dot;
*u++ = ch;
break;
case '%':
quoted_state = state;
state = sw_quoted;
break;
default:
state = sw_usual;
*u++ = ch;
break;
}
ch = *p++;
break;
case sw_dot_dot:
switch(ch)
{
case '/':
state = sw_slash;
u -= 4;
if (u < r->uri.data)
{
return NGX_HTTP_PARSE_INVALID_REQUEST;
}
while (*(u - 1) != '/')
{
u--;
}
break;
case '%':
quoted_state = state;
state = sw_quoted;
break;
#if (WIN32)
case '.':
state = sw_dot_dot_dot;
*u++ = ch;
break;
#endif
default:
state = sw_usual;
*u++ = ch;
break;
}
ch = *p++;
break;
#if (WIN32)
case sw_dot_dot_dot:
switch(ch)
{
case '/':
state = sw_slash;
u -= 5;
if (u < r->uri.data)
{
return NGX_HTTP_PARSE_INVALID_REQUEST;
}
while (*u != '/')
{
u--;
}
if (u < r->uri.data)
{
return NGX_HTTP_PARSE_INVALID_REQUEST;
}
while (*(u - 1) != '/')
{
u--;
}
break;
case '%':
quoted_state = state;
state = sw_quoted;
break;
default:
state = sw_usual;
*u++ = ch;
break;
}
ch = *p++;
break;
#endif
case sw_quoted:
if (ch >= '0' && ch <= '9')
{
decoded = (u_char) (ch - '0');
state = sw_quoted_second;
ch = *p++;
break;
}
c = (u_char) (ch | 0x20);
if (c >= 'a' && c <= 'f')
{
decoded = (u_char) (c - 'a' + 10);
state = sw_quoted_second;
ch = *p++;
break;
}
return NGX_HTTP_PARSE_INVALID_REQUEST;
case sw_quoted_second:
if (ch >= '0' && ch <= '9')
{
ch = (u_char) ((decoded << 4) + ch - '0');
if (ch == '%')
{
state = sw_usual;
*u++ = ch;
ch = *p++;
break;
}
state = quoted_state;
break;
}
c = (u_char) (ch | 0x20);
if (c >= 'a' && c <= 'f')
{
ch = (u_char) ((decoded << 4) + c - 'a' + 10);
if (ch == '%')
{
state = sw_usual;
*u++ = ch;
ch = *p++;
break;
}
state = quoted_state;
break;
}
return NGX_HTTP_PARSE_INVALID_REQUEST;
}
}
r->uri.len = u - r->uri.data;
r->uri.data[r->uri.len] = '\0';
if (r->uri_ext)
{
r->exten.len = u - r->uri_ext;
if (!(r->exten.data = ngx_palloc(r->pool, r->exten.len + 1)))
{
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
ngx_cpystrn(r->exten.data, r->uri_ext, r->exten.len + 1);
}
r->uri_ext = NULL;
return NGX_OK;
}
ngx_int_t
ngx_set_inherited_sockets(ngx_cycle_t *cycle)
{
size_t len;
ngx_uint_t i;
ngx_listening_t *ls;
socklen_t olen;
#if (NGX_HAVE_DEFERRED_ACCEPT && defined SO_ACCEPTFILTER)
ngx_err_t err;
struct accept_filter_arg af;
#endif
#if (NGX_HAVE_DEFERRED_ACCEPT && defined TCP_DEFER_ACCEPT)
int timeout;
#endif
ls = cycle->listening.elts;
for (i = 0; i < cycle->listening.nelts; i++) {
ls[i].sockaddr = ngx_palloc(cycle->pool, NGX_SOCKADDRLEN);
if (ls[i].sockaddr == NULL) {
return NGX_ERROR;
}
ls[i].socklen = NGX_SOCKADDRLEN;
if (getsockname(ls[i].fd, ls[i].sockaddr, &ls[i].socklen) == -1) {
ngx_log_error(NGX_LOG_CRIT, cycle->log, ngx_socket_errno,
"getsockname() of the inherited "
"socket #%d failed", ls[i].fd);
ls[i].ignore = 1;
continue;
}
switch (ls[i].sockaddr->sa_family) {
#if (NGX_HAVE_INET6)
case AF_INET6:
ls[i].addr_text_max_len = NGX_INET6_ADDRSTRLEN;
len = NGX_INET6_ADDRSTRLEN + sizeof(":65535") - 1;
break;
#endif
#if (NGX_HAVE_UNIX_DOMAIN)
case AF_UNIX:
ls[i].addr_text_max_len = NGX_UNIX_ADDRSTRLEN;
len = NGX_UNIX_ADDRSTRLEN;
break;
#endif
case AF_INET:
ls[i].addr_text_max_len = NGX_INET_ADDRSTRLEN;
len = NGX_INET_ADDRSTRLEN + sizeof(":65535") - 1;
break;
default:
ngx_log_error(NGX_LOG_CRIT, cycle->log, ngx_socket_errno,
"the inherited socket #%d has "
"an unsupported protocol family", ls[i].fd);
ls[i].ignore = 1;
continue;
}
ls[i].addr_text.data = ngx_pnalloc(cycle->pool, len);
if (ls[i].addr_text.data == NULL) {
return NGX_ERROR;
}
len = ngx_sock_ntop(ls[i].sockaddr, ls[i].addr_text.data, len, 1);
if (len == 0) {
return NGX_ERROR;
}
ls[i].addr_text.len = len;
ls[i].backlog = NGX_LISTEN_BACKLOG;
olen = sizeof(int);
if (getsockopt(ls[i].fd, SOL_SOCKET, SO_RCVBUF, (void *) &ls[i].rcvbuf,
&olen)
== -1)
{
ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
"getsockopt(SO_RCVBUF) %V failed, ignored",
&ls[i].addr_text);
ls[i].rcvbuf = -1;
}
olen = sizeof(int);
if (getsockopt(ls[i].fd, SOL_SOCKET, SO_SNDBUF, (void *) &ls[i].sndbuf,
&olen)
== -1)
{
ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
"getsockopt(SO_SNDBUF) %V failed, ignored",
&ls[i].addr_text);
ls[i].sndbuf = -1;
}
#if 0
/* SO_SETFIB is currently a set only option */
#if (NGX_HAVE_SETFIB)
if (getsockopt(ls[i].setfib, SOL_SOCKET, SO_SETFIB,
(void *) &ls[i].setfib, &olen)
== -1)
{
ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
"getsockopt(SO_SETFIB) %V failed, ignored",
&ls[i].addr_text);
ls[i].setfib = -1;
}
#endif
#endif
#if (NGX_HAVE_DEFERRED_ACCEPT && defined SO_ACCEPTFILTER)
ngx_memzero(&af, sizeof(struct accept_filter_arg));
olen = sizeof(struct accept_filter_arg);
if (getsockopt(ls[i].fd, SOL_SOCKET, SO_ACCEPTFILTER, &af, &olen)
== -1)
{
err = ngx_errno;
if (err == NGX_EINVAL) {
continue;
}
ngx_log_error(NGX_LOG_NOTICE, cycle->log, err,
"getsockopt(SO_ACCEPTFILTER) for %V failed, ignored",
&ls[i].addr_text);
continue;
}
if (olen < sizeof(struct accept_filter_arg) || af.af_name[0] == '\0') {
continue;
}
ls[i].accept_filter = ngx_palloc(cycle->pool, 16);
if (ls[i].accept_filter == NULL) {
return NGX_ERROR;
}
(void) ngx_cpystrn((u_char *) ls[i].accept_filter,
(u_char *) af.af_name, 16);
#endif
#if (NGX_HAVE_DEFERRED_ACCEPT && defined TCP_DEFER_ACCEPT)
timeout = 0;
olen = sizeof(int);
if (getsockopt(ls[i].fd, IPPROTO_TCP, TCP_DEFER_ACCEPT, &timeout, &olen)
== -1)
{
ngx_log_error(NGX_LOG_NOTICE, cycle->log, ngx_errno,
"getsockopt(TCP_DEFER_ACCEPT) for %V failed, ignored",
&ls[i].addr_text);
continue;
}
if (olen < sizeof(int) || timeout == 0) {
continue;
}
ls[i].deferred_accept = 1;
#endif
}
return NGX_OK;
}
static ngx_int_t ngx_http_mongo_add_connection(ngx_cycle_t* cycle, ngx_http_gridfs_loc_conf_t* gridfs_loc_conf) {
ngx_http_mongo_connection_t* mongo_conn;
int status;
ngx_http_mongod_server_t *mongods;
volatile ngx_uint_t i;
u_char host[255];
mongods = gridfs_loc_conf->mongods->elts;
mongo_conn = ngx_http_get_mongo_connection( gridfs_loc_conf->mongo );
if (mongo_conn != NULL) {
return NGX_OK;
}
mongo_conn = ngx_array_push(&ngx_http_mongo_connections);
if (mongo_conn == NULL) {
return NGX_ERROR;
}
mongo_conn->name = gridfs_loc_conf->mongo;
mongo_conn->auths = ngx_array_create(cycle->pool, 4, sizeof(ngx_http_mongo_auth_t));
if ( gridfs_loc_conf->mongods->nelts == 1 ) {
ngx_cpystrn( host, mongods[0].host.data, mongods[0].host.len + 1 );
status = mongo_connect( &mongo_conn->conn, (const char*)host, mongods[0].port );
} else if ( gridfs_loc_conf->mongods->nelts >= 2 && gridfs_loc_conf->mongods->nelts < 9 ) {
/* Initiate replica set connection. */
mongo_replset_init( &mongo_conn->conn, (const char *)gridfs_loc_conf->replset.data );
/* Add replica set seeds. */
for( i=0; i<gridfs_loc_conf->mongods->nelts; ++i ) {
ngx_cpystrn( host, mongods[i].host.data, mongods[i].host.len + 1 );
mongo_replset_add_seed( &mongo_conn->conn, (const char *)host, mongods[i].port );
}
status = mongo_replset_connect( &mongo_conn->conn );
} else {
ngx_log_error(NGX_LOG_ERR, cycle->log, 0,
"Mongo Nginx Exception: Too many strings provided in 'mongo' directive.");
return NGX_ERROR;
}
switch (status) {
case MONGO_CONN_SUCCESS:
break;
case MONGO_CONN_NO_SOCKET:
ngx_log_error(NGX_LOG_ERR, cycle->log, 0,
"Mongo Exception: No Socket");
return NGX_ERROR;
case MONGO_CONN_FAIL:
ngx_log_error(NGX_LOG_ERR, cycle->log, 0,
"Mongo Exception: Connection Failure.");
return NGX_ERROR;
case MONGO_CONN_ADDR_FAIL:
ngx_log_error(NGX_LOG_ERR, cycle->log, 0,
"Mongo Exception: getaddrinfo Failure.");
return NGX_ERROR;
case MONGO_CONN_NOT_MASTER:
ngx_log_error(NGX_LOG_ERR, cycle->log, 0,
"Mongo Exception: Not Master");
return NGX_ERROR;
case MONGO_CONN_BAD_SET_NAME:
ngx_log_error(NGX_LOG_ERR, cycle->log, 0,
"Mongo Exception: Replica set name %s does not match.", gridfs_loc_conf->replset.data);
return NGX_ERROR;
case MONGO_CONN_NO_PRIMARY:
ngx_log_error(NGX_LOG_ERR, cycle->log, 0,
"Mongo Exception: Cannot connect to primary node.");
return NGX_ERROR;
default:
ngx_log_error(NGX_LOG_ERR, cycle->log, 0,
"Mongo Exception: Unknown Error");
return NGX_ERROR;
}
return NGX_OK;
}
void
ngx_master_process_cycle(ngx_cycle_t *cycle)
{
char *title;
u_char *p;
size_t size;
ngx_int_t i;
ngx_uint_t n, sigio;
sigset_t set;
struct itimerval itv;
ngx_uint_t live;
ngx_msec_t delay;
ngx_listening_t *ls;
ngx_core_conf_t *ccf;
//屏蔽一系列信号，防止被打扰
sigemptyset(&set);
sigaddset(&set, SIGCHLD);
sigaddset(&set, SIGALRM);
sigaddset(&set, SIGIO);
sigaddset(&set, SIGINT);
sigaddset(&set, ngx_signal_value(NGX_RECONFIGURE_SIGNAL));
sigaddset(&set, ngx_signal_value(NGX_REOPEN_SIGNAL));
sigaddset(&set, ngx_signal_value(NGX_NOACCEPT_SIGNAL));
sigaddset(&set, ngx_signal_value(NGX_TERMINATE_SIGNAL));
sigaddset(&set, ngx_signal_value(NGX_SHUTDOWN_SIGNAL));
sigaddset(&set, ngx_signal_value(NGX_CHANGEBIN_SIGNAL));
if (sigprocmask(SIG_BLOCK, &set, NULL) == -1) {
ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
"sigprocmask() failed");
}
sigemptyset(&set);
size = sizeof(master_process);
for (i = 0; i < ngx_argc; i++) {
size += ngx_strlen(ngx_argv[i]) + 1;
}
title = ngx_pnalloc(cycle->pool, size);
p = ngx_cpymem(title, master_process, sizeof(master_process) - 1);
for (i = 0; i < ngx_argc; i++) {
*p++ = ' ';
p = ngx_cpystrn(p, (u_char *) ngx_argv[i], size);
}
ngx_setproctitle(title);
//master进程获取core模块配置，ccf中有要创建多少个worker的设定
ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_core_module);
//启动worker,这时已经有了worker进程
ngx_start_worker_processes(cycle, ccf->worker_processes, NGX_PROCESS_RESPAWN);
ngx_start_cache_manager_processes(cycle, 0); //创建有关cache的子进程
ngx_new_binary = 0;
delay = 0;
sigio = 0;
live = 1;
for ( ;; ) {
//delay用来等待子进程退出的时间，由于我们接受到SIGINT信号后，我们需要先发送信号给子进程，
//而子进程的退出需要一定的时间，超时时如果子进程已退出，我们父进程就直接退出，
//否则发送sigkill信号给子进程(强制退出),然后再退出。
if (delay) {
if (ngx_sigalrm) {
sigio = 0;
delay *= 2;
ngx_sigalrm = 0;
}
ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
"termination cycle: %d", delay);
itv.it_interval.tv_sec = 0;
itv.it_interval.tv_usec = 0;
itv.it_value.tv_sec = delay / 1000;
itv.it_value.tv_usec = (delay % 1000 ) * 1000;
//设置定时器
if (setitimer(ITIMER_REAL, &itv, NULL) == -1) {
ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
"setitimer() failed");
}
}
ngx_log_debug0(NGX_LOG_DEBUG_EVENT, cycle->log, 0, "sigsuspend");
//延时，等待信号
sigsuspend(&set); //调用这个将master进程挂起来
ngx_time_update();
ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, 0, "wake up, sigio %i", sigio);
//ngx_reap为1，说明有子进程已经退出
if (ngx_reap) {
ngx_reap = 0;
ngx_log_debug0(NGX_LOG_DEBUG_EVENT, cycle->log, 0, "reap children");
//这个里面处理退出的子进程(有的worker异常退出，这时我们就需要重启这个worker )，如果所有子进程都退出则会返回0.
live = ngx_reap_children(cycle);
}
//如果没有存活的子进程，并且收到了ngx_terminate或者ngx_quit信号，则master退出。
if (!live && (ngx_terminate || ngx_quit)) {
ngx_master_process_exit(cycle);
}
//收到了sigint信号
if (ngx_terminate) {
//设置延时
if (delay == 0) {
delay = 50;
}
if (sigio) {
sigio--;
continue;
}
sigio = ccf->worker_processes + 2 /* cache processes */;
if (delay > 1000) {
//如果超时，则强制杀死worker
ngx_signal_worker_processes(cycle, SIGKILL);
} else {
//负责发送sigint给worker，让它退出
ngx_signal_worker_processes(cycle,
ngx_signal_value(NGX_TERMINATE_SIGNAL));
}
continue;
}
//收到quit信号
if (ngx_quit) {
//发送给worker quit信号
ngx_signal_worker_processes(cycle,
ngx_signal_value(NGX_SHUTDOWN_SIGNAL));
ls = cycle->listening.elts;
for (n = 0; n < cycle->listening.nelts; n++) {
if (ngx_close_socket(ls[n].fd) == -1) {
ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_socket_errno,
ngx_close_socket_n " %V failed",
&ls[n].addr_text);
}
}
cycle->listening.nelts = 0;
continue;
}
//收到需要reconfig的信号
if (ngx_reconfigure) {
ngx_reconfigure = 0;
//判断是否热代码替换后的新的代码还在运行中(也就是还没退出当前的master)。如果还在运行中，则不需要重新初始化config
if (ngx_new_binary) {
ngx_start_worker_processes(cycle, ccf->worker_processes,
NGX_PROCESS_RESPAWN);
ngx_start_cache_manager_processes(cycle, 0);
ngx_noaccepting = 0;
continue;
}
ngx_log_error(NGX_LOG_NOTICE, cycle->log, 0, "reconfiguring");
//重新初始化config，并重新启动新的worker
cycle = ngx_init_cycle(cycle);
if (cycle == NULL) {
cycle = (ngx_cycle_t *) ngx_cycle;
continue;
}
ngx_cycle = cycle;
ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx,
ngx_core_module);
ngx_start_worker_processes(cycle, ccf->worker_processes,
NGX_PROCESS_JUST_RESPAWN);
ngx_start_cache_manager_processes(cycle, 1);
live = 1;
ngx_signal_worker_processes(cycle,
ngx_signal_value(NGX_SHUTDOWN_SIGNAL));
}
if (ngx_restart) {
ngx_restart = 0;
ngx_start_worker_processes(cycle, ccf->worker_processes,
NGX_PROCESS_RESPAWN);
ngx_start_cache_manager_processes(cycle, 0);
live = 1;
}
//重新打开
if (ngx_reopen) {
ngx_reopen = 0;
ngx_log_error(NGX_LOG_NOTICE, cycle->log, 0, "reopening logs");
ngx_reopen_files(cycle, ccf->user);
ngx_signal_worker_processes(cycle,
ngx_signal_value(NGX_REOPEN_SIGNAL));
}
//热代码替换
if (ngx_change_binary) {
ngx_change_binary = 0;
ngx_log_error(NGX_LOG_NOTICE, cycle->log, 0, "changing binary");
//进行热代码替换，这里是调用execve来执行新的代码
ngx_new_binary = ngx_exec_new_binary(cycle, ngx_argv);
}
//接受到停止accept连接，其实也就是worker退出(有区别的是，这里master不需要退出)
if (ngx_noaccept) {
ngx_noaccept = 0;
ngx_noaccepting = 1;
//给worker发送信号
ngx_signal_worker_processes(cycle,
ngx_signal_value(NGX_SHUTDOWN_SIGNAL));
}
}
}
ngx_int_t
ngx_conf_full_name(ngx_cycle_t *cycle, ngx_str_t *name)
{
u_char *p;
ngx_str_t old;
ngx_str_t wd;
ngx_core_conf_t *ccf;
ngx_flag_t needsep;
u_char sep;
if (name->data[0] == '/') {
return NGX_OK;
}
#if (NGX_WIN32)
if (name->len > 2
&& name->data[1] == ':'
&& ((name->data[0] >= 'a' && name->data[0] <= 'z')
|| (name->data[0] >= 'A' && name->data[0] <= 'Z')))
{
return NGX_OK;
}
#endif
#if (NGX_WIN32)
sep = (u_char)'\\';
#else
sep = (u_char)'/';
#endif
old = *name;
ccf = (ngx_core_conf_t *)ngx_get_conf(cycle->conf_ctx, ngx_core_module);
wd = cycle->root;
if (ccf->working_directory.len > 0) {
wd = ccf->working_directory;
}
if (wd.len > 0 && wd.data[wd.len-1] == sep) {
needsep = 0;
} else {
needsep = 1;
}
name->len = wd.len + old.len;
if (needsep) {
name->len ++;
}
name->data = ngx_palloc(cycle->pool, name->len + 1);
if (name->data == NULL) {
return NGX_ERROR;
}
p = ngx_cpymem(name->data, wd.data, wd.len);
if (needsep) { *p++ = sep; }
ngx_cpystrn(p, old.data, old.len + 1);
return NGX_OK;
}
ngx_int_t
ngx_open_cached_file(ngx_open_file_cache_t *cache, ngx_str_t *name,
ngx_open_file_info_t *of, ngx_pool_t *pool)
{
time_t now;
uint32_t hash;
ngx_int_t rc;
ngx_pool_cleanup_t *cln;
ngx_cached_open_file_t *file;
ngx_pool_cleanup_file_t *clnf;
ngx_open_file_cache_cleanup_t *ofcln;
of->err = 0;
if (cache == NULL) {
cln = ngx_pool_cleanup_add(pool, sizeof(ngx_pool_cleanup_file_t));
if (cln == NULL) {
return NGX_ERROR;
}
rc = ngx_open_and_stat_file(name->data, of, pool->log);
if (rc == NGX_OK && !of->is_dir) {
cln->handler = ngx_pool_cleanup_file;
clnf = cln->data;
clnf->fd = of->fd;
clnf->name = name->data;
clnf->log = pool->log;
}
return rc;
}
cln = ngx_pool_cleanup_add(pool, sizeof(ngx_open_file_cache_cleanup_t));
if (cln == NULL) {
return NGX_ERROR;
}
now = ngx_time();
hash = ngx_crc32_long(name->data, name->len);
file = ngx_open_file_lookup(cache, name, hash);
if (file) {
file->uses++;
ngx_queue_remove(&file->queue);
if (file->fd == NGX_INVALID_FILE && file->err == 0 && !file->is_dir) {
/* file was not used often enough to keep open */
rc = ngx_open_and_stat_file(name->data, of, pool->log);
if (rc != NGX_OK && (of->err == 0 || !of->errors)) {
goto failed;
}
goto add_event;
}
if ((file->event && file->use_event)
|| (file->event == NULL && now - file->created < of->valid))
{
if (file->err == 0) {
of->fd = file->fd;
of->uniq = file->uniq;
of->mtime = file->mtime;
of->size = file->size;
of->is_dir = file->is_dir;
of->is_file = file->is_file;
of->is_link = file->is_link;
of->is_exec = file->is_exec;
if (!file->is_dir) {
file->count++;
ngx_open_file_add_event(cache, file, of, pool->log);
}
} else {
of->err = file->err;
}
goto found;
}
ngx_log_debug4(NGX_LOG_DEBUG_CORE, pool->log, 0,
"retest open file: %s, fd:%d, c:%d, e:%d",
file->name, file->fd, file->count, file->err);
if (file->is_dir) {
/*
* chances that directory became file are very small
* so test_dir flag allows to use a single syscall
* in ngx_file_info() instead of three syscalls
*/
of->test_dir = 1;
}
rc = ngx_open_and_stat_file(name->data, of, pool->log);
if (rc != NGX_OK && (of->err == 0 || !of->errors)) {
goto failed;
}
if (of->is_dir) {
if (file->is_dir || file->err) {
goto update;
}
/* file became directory */
} else if (of->err == 0) { /* file */
if (file->is_dir || file->err) {
goto add_event;
}
if (of->uniq == file->uniq
&& of->mtime == file->mtime
&& of->size == file->size)
{
if (ngx_close_file(of->fd) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_ALERT, pool->log, ngx_errno,
ngx_close_file_n " \"%s\" failed",
name->data);
}
of->fd = file->fd;
file->count++;
if (file->event) {
file->use_event = 1;
goto renew;
}
ngx_open_file_add_event(cache, file, of, pool->log);
goto renew;
}
/* file was changed */
} else { /* error to cache */
if (file->err || file->is_dir) {
goto update;
}
/* file was removed, etc. */
}
if (file->count == 0) {
ngx_open_file_del_event(file);
if (ngx_close_file(file->fd) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_ALERT, pool->log, ngx_errno,
ngx_close_file_n " \"%s\" failed",
name->data);
}
goto add_event;
}
ngx_rbtree_delete(&cache->rbtree, &file->node);
cache->current--;
file->close = 1;
goto create;
}
/* not found */
rc = ngx_open_and_stat_file(name->data, of, pool->log);
if (rc != NGX_OK && (of->err == 0 || !of->errors)) {
goto failed;
}
create:
if (cache->current >= cache->max) {
ngx_expire_old_cached_files(cache, 0, pool->log);
}
file = ngx_alloc(sizeof(ngx_cached_open_file_t), pool->log);
if (file == NULL) {
goto failed;
}
file->name = ngx_alloc(name->len + 1, pool->log);
if (file->name == NULL) {
ngx_free(file);
file = NULL;
goto failed;
}
ngx_cpystrn(file->name, name->data, name->len + 1);
file->node.key = hash;
ngx_rbtree_insert(&cache->rbtree, &file->node);
cache->current++;
file->uses = 1;
file->count = 0;
file->use_event = 0;
file->event = NULL;
add_event:
ngx_open_file_add_event(cache, file, of, pool->log);
update:
file->fd = of->fd;
file->err = of->err;
if (of->err == 0) {
file->uniq = of->uniq;
file->mtime = of->mtime;
file->size = of->size;
file->close = 0;
file->is_dir = of->is_dir;
file->is_file = of->is_file;
file->is_link = of->is_link;
file->is_exec = of->is_exec;
if (!of->is_dir) {
file->count++;
}
}
renew:
file->created = now;
found:
file->accessed = now;
ngx_queue_insert_head(&cache->expire_queue, &file->queue);
ngx_log_debug5(NGX_LOG_DEBUG_CORE, pool->log, 0,
"cached open file: %s, fd:%d, c:%d, e:%d, u:%d",
file->name, file->fd, file->count, file->err, file->uses);
if (of->err == 0) {
if (!of->is_dir) {
cln->handler = ngx_open_file_cleanup;
ofcln = cln->data;
ofcln->cache = cache;
ofcln->file = file;
ofcln->min_uses = of->min_uses;
ofcln->log = pool->log;
}
return NGX_OK;
}
return NGX_ERROR;
failed:
if (file) {
ngx_rbtree_delete(&cache->rbtree, &file->node);
cache->current--;
if (file->count == 0) {
if (file->fd != NGX_INVALID_FILE) {
if (ngx_close_file(file->fd) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_ALERT, pool->log, ngx_errno,
ngx_close_file_n " \"%s\" failed",
file->name);
}
}
ngx_free(file->name);
ngx_free(file);
} else {
file->close = 1;
}
}
if (of->fd != NGX_INVALID_FILE) {
if (ngx_close_file(of->fd) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_ALERT, pool->log, ngx_errno,
ngx_close_file_n " \"%s\" failed", name->data);
}
}
return NGX_ERROR;
}
// 初始化日志
ngx_log_t *
ngx_log_init(u_char *prefix)
{
u_char *p, *name;
size_t nlen, plen;
// 初始化为notice级别，即只有warn,error等才能记录日志
ngx_log.file = &ngx_log_file;
ngx_log.log_level = NGX_LOG_NOTICE;
name = (u_char *) NGX_ERROR_LOG_PATH;
/*
* we use ngx_strlen() here since BCC warns about
* condition is always false and unreachable code
*/
nlen = ngx_strlen(name);
if (nlen == 0) {
ngx_log_file.fd = ngx_stderr;
return &ngx_log;
}
p = NULL;
#if (NGX_WIN32)
if (name[1] != ':') {
#else
if (name[0] != '/') {
#endif
if (prefix) {
plen = ngx_strlen(prefix);
} else {
#ifdef NGX_PREFIX
prefix = (u_char *) NGX_PREFIX;
plen = ngx_strlen(prefix);
#else
plen = 0;
#endif
}
if (plen) {
name = malloc(plen + nlen + 2);
if (name == NULL) {
return NULL;
}
p = ngx_cpymem(name, prefix, plen);
if (!ngx_path_separator(*(p - 1))) {
*p++ = '/';
}
ngx_cpystrn(p, (u_char *) NGX_ERROR_LOG_PATH, nlen + 1);
p = name;
}
}
ngx_log_file.fd = ngx_open_file(name, NGX_FILE_APPEND,
NGX_FILE_CREATE_OR_OPEN,
NGX_FILE_DEFAULT_ACCESS);
if (ngx_log_file.fd == NGX_INVALID_FILE) {
ngx_log_stderr(ngx_errno,
"[alert] could not open error log file: "
ngx_open_file_n " \"%s\" failed", name);
#if (NGX_WIN32)
ngx_event_log(ngx_errno,
"could not open error log file: "
ngx_open_file_n " \"%s\" failed", name);
#endif
ngx_log_file.fd = ngx_stderr;
}
if (p) {
ngx_free(p);
}
return &ngx_log;
}
ngx_int_t
ngx_log_open_default(ngx_cycle_t *cycle)
{
ngx_log_t *log;
static ngx_str_t error_log = ngx_string(NGX_ERROR_LOG_PATH);
if (ngx_log_get_file_log(&cycle->new_log) != NULL) {
return NGX_OK;
}
if (cycle->new_log.log_level != 0) {
/* there are some error logs, but no files */
log = ngx_pcalloc(cycle->pool, sizeof(ngx_log_t));
if (log == NULL) {
return NGX_ERROR;
}
} else {
/* no error logs at all */
log = &cycle->new_log;
}
log->log_level = NGX_LOG_ERR;
log->file = ngx_conf_open_file(cycle, &error_log);
if (log->file == NULL) {
return NGX_ERROR;
}
if (log != &cycle->new_log) {
ngx_log_insert(&cycle->new_log, log);
}
return NGX_OK;
}
static ngx_int_t
ngx_http_random_index_handler(ngx_http_request_t *r)
{
u_char *last, *filename;
size_t len, allocated, root;
ngx_err_t err;
ngx_int_t rc;
ngx_str_t path, uri, *name;
ngx_dir_t dir;
ngx_uint_t n, level;
ngx_array_t names;
ngx_http_random_index_loc_conf_t *rlcf;
if (r->uri.data[r->uri.len - 1] != '/') {
return NGX_DECLINED;
}
if (r->zero_in_uri) {
return NGX_DECLINED;
}
if (!(r->method & (NGX_HTTP_GET|NGX_HTTP_HEAD|NGX_HTTP_POST))) {
return NGX_DECLINED;
}
rlcf = ngx_http_get_module_loc_conf(r, ngx_http_random_index_module);
if (!rlcf->enable) {
return NGX_DECLINED;
}
#if (NGX_HAVE_D_TYPE)
len = NGX_DIR_MASK_LEN;
#else
len = NGX_HTTP_RANDOM_INDEX_PREALLOCATE;
#endif
last = ngx_http_map_uri_to_path(r, &path, &root, len);
if (last == NULL) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
allocated = path.len;
path.len = last - path.data - 1;
path.data[path.len] = '\0';
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"http random index: \"%s\"", path.data);
if (ngx_open_dir(&path, &dir) == NGX_ERROR) {
err = ngx_errno;
if (err == NGX_ENOENT
|| err == NGX_ENOTDIR
|| err == NGX_ENAMETOOLONG)
{
level = NGX_LOG_ERR;
rc = NGX_HTTP_NOT_FOUND;
} else if (err == NGX_EACCES) {
level = NGX_LOG_ERR;
rc = NGX_HTTP_FORBIDDEN;
} else {
level = NGX_LOG_CRIT;
rc = NGX_HTTP_INTERNAL_SERVER_ERROR;
}
ngx_log_error(level, r->connection->log, err,
ngx_open_dir_n " \"%s\" failed", path.data);
return rc;
}
if (ngx_array_init(&names, r->pool, 32, sizeof(ngx_str_t)) != NGX_OK) {
return ngx_http_random_index_error(r, &dir, &path);
}
filename = path.data;
filename[path.len] = '/';
for ( ;; ) {
ngx_set_errno(0);
if (ngx_read_dir(&dir) == NGX_ERROR) {
err = ngx_errno;
if (err != NGX_ENOMOREFILES) {
ngx_log_error(NGX_LOG_CRIT, r->connection->log, err,
ngx_read_dir_n " \"%V\" failed", &path);
return ngx_http_random_index_error(r, &dir, &path);
}
break;
}
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"http random index file: \"%s\"", ngx_de_name(&dir));
if (ngx_de_name(&dir)[0] == '.') {
continue;
}
len = ngx_de_namelen(&dir);
if (!dir.valid_type) {
/* 1 byte for '/' and 1 byte for terminating '\0' */
if (path.len + 1 + len + 1 > allocated) {
allocated = path.len + 1 + len + 1
+ NGX_HTTP_RANDOM_INDEX_PREALLOCATE;
filename = ngx_pnalloc(r->pool, allocated);
if (filename == NULL) {
return ngx_http_random_index_error(r, &dir, &path);
}
last = ngx_cpystrn(filename, path.data, path.len + 1);
*last++ = '/';
}
ngx_cpystrn(last, ngx_de_name(&dir), len + 1);
if (ngx_de_info(filename, &dir) == NGX_FILE_ERROR) {
err = ngx_errno;
if (err != NGX_ENOENT) {
ngx_log_error(NGX_LOG_CRIT, r->connection->log, err,
ngx_de_info_n " \"%s\" failed", filename);
return ngx_http_random_index_error(r, &dir, &path);
}
if (ngx_de_link_info(filename, &dir) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_CRIT, r->connection->log, ngx_errno,
ngx_de_link_info_n " \"%s\" failed",
filename);
return ngx_http_random_index_error(r, &dir, &path);
}
}
}
if (!ngx_de_is_file(&dir)) {
continue;
}
name = ngx_array_push(&names);
if (name == NULL) {
return ngx_http_random_index_error(r, &dir, &path);
}
name->len = len;
name->data = ngx_pnalloc(r->pool, len);
if (name->data == NULL) {
return ngx_http_random_index_error(r, &dir, &path);
}
ngx_memcpy(name->data, ngx_de_name(&dir), len);
}
if (ngx_close_dir(&dir) == NGX_ERROR) {
ngx_log_error(NGX_LOG_ALERT, r->connection->log, ngx_errno,
ngx_close_dir_n " \"%s\" failed", &path);
}
n = names.nelts;
if (n == 0) {
return NGX_DECLINED;
}
name = names.elts;
n = (ngx_uint_t) (((uint64_t) ngx_random() * n) / 0x80000000);
uri.len = r->uri.len + name[n].len;
uri.data = ngx_pnalloc(r->pool, uri.len);
if (uri.data == NULL) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
last = ngx_copy(uri.data, r->uri.data, r->uri.len);
ngx_memcpy(last, name[n].data, name[n].len);
return ngx_http_internal_redirect(r, &uri, &r->args);
}
//http://blog.csdn.net/lengzijian/article/details/7575813
ngx_cycle_t *
ngx_init_cycle(ngx_cycle_t *old_cycle)
{
void *rv;
char **senv, **env;
ngx_uint_t i, n;
ngx_log_t *log;
ngx_time_t *tp;
ngx_conf_t conf;
ngx_pool_t *pool;
ngx_cycle_t *cycle, **old;
ngx_shm_zone_t *shm_zone, *oshm_zone;
ngx_list_part_t *part, *opart;
ngx_open_file_t *file;
ngx_listening_t *ls, *nls;
ngx_core_conf_t *ccf, *old_ccf;
ngx_core_module_t *module;
char hostname[NGX_MAXHOSTNAMELEN];
ngx_timezone_update();
/* force localtime update with a new timezone */
tp = ngx_timeofday();
tp->sec = 0;
ngx_time_update();
log = old_cycle->log;
pool = ngx_create_pool(NGX_CYCLE_POOL_SIZE, log);
if (pool == NULL) {
return NULL;
}
pool->log = log;
cycle = ngx_pcalloc(pool, sizeof(ngx_cycle_t));
if (cycle == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
cycle->pool = pool;
cycle->log = log;
cycle->old_cycle = old_cycle;
cycle->conf_prefix.len = old_cycle->conf_prefix.len;
cycle->conf_prefix.data = ngx_pstrdup(pool, &old_cycle->conf_prefix);
if (cycle->conf_prefix.data == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
cycle->prefix.len = old_cycle->prefix.len;
cycle->prefix.data = ngx_pstrdup(pool, &old_cycle->prefix);
if (cycle->prefix.data == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
cycle->conf_file.len = old_cycle->conf_file.len;
cycle->conf_file.data = ngx_pnalloc(pool, old_cycle->conf_file.len + 1);
if (cycle->conf_file.data == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
ngx_cpystrn(cycle->conf_file.data, old_cycle->conf_file.data,
old_cycle->conf_file.len + 1);
cycle->conf_param.len = old_cycle->conf_param.len;
cycle->conf_param.data = ngx_pstrdup(pool, &old_cycle->conf_param);
if (cycle->conf_param.data == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
n = old_cycle->paths.nelts ? old_cycle->paths.nelts : 10;
cycle->paths.elts = ngx_pcalloc(pool, n * sizeof(ngx_path_t *));
if (cycle->paths.elts == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
cycle->paths.nelts = 0;
cycle->paths.size = sizeof(ngx_path_t *);
cycle->paths.nalloc = n;
cycle->paths.pool = pool;
if (old_cycle->open_files.part.nelts) {
n = old_cycle->open_files.part.nelts;
for (part = old_cycle->open_files.part.next; part; part = part->next) {
n += part->nelts;
}
} else {
n = 20;
}
if (ngx_list_init(&cycle->open_files, pool, n, sizeof(ngx_open_file_t))
!= NGX_OK)
{
ngx_destroy_pool(pool);
return NULL;
}
if (old_cycle->shared_memory.part.nelts) {
n = old_cycle->shared_memory.part.nelts;
for (part = old_cycle->shared_memory.part.next; part; part = part->next)
{
n += part->nelts;
}
} else {
n = 1;
}
//ngx_list_init主要是初始链表的elts,并为其申请内存
if (ngx_list_init(&cycle->shared_memory, pool, n, sizeof(ngx_shm_zone_t))
!= NGX_OK)
{
ngx_destroy_pool(pool);
return NULL;
}
n = old_cycle->listening.nelts ? old_cycle->listening.nelts : 10;
cycle->listening.elts = ngx_pcalloc(pool, n * sizeof(ngx_listening_t));
if (cycle->listening.elts == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
cycle->listening.nelts = 0;
cycle->listening.size = sizeof(ngx_listening_t);
cycle->listening.nalloc = n;
cycle->listening.pool = pool;
//初始化双向链表。主要存储着可反复用的连接ngx_connection_t
ngx_queue_init(&cycle->reusable_connections_queue);
cycle->conf_ctx = ngx_pcalloc(pool, ngx_max_module * sizeof(void *));
if (cycle->conf_ctx == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
if (gethostname(hostname, NGX_MAXHOSTNAMELEN) == -1) {//获取主机名称
ngx_log_error(NGX_LOG_EMERG, log, ngx_errno, "gethostname() failed");
ngx_destroy_pool(pool);
return NULL;
}
/* on Linux gethostname() silently truncates name that does not fit */
hostname[NGX_MAXHOSTNAMELEN - 1] = '\0';
cycle->hostname.len = ngx_strlen(hostname);
cycle->hostname.data = ngx_pnalloc(pool, cycle->hostname.len);
if (cycle->hostname.data == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
ngx_strlow(cycle->hostname.data, (u_char *) hostname, cycle->hostname.len);
//调用全部NGX_CORE_MODULE的create_conf构建配置结构体。并保存在conf_ctx数组里面
for (i = 0; ngx_modules[i]; i++) {
if (ngx_modules[i]->type != NGX_CORE_MODULE) { //event 和http 和core 三个module
continue;
}
//上下文操作
//static ngx_core_module_t ngx_events_module_ctx = {
//ngx_string("events"),
//NULL,
//ngx_event_init_conf
//};
//static ngx_core_module_t ngx_http_module_ctx = {
//ngx_string("http"),
//NULL,
//NULL
//};
//static ngx_core_module_t ngx_core_module_ctx = {
// ngx_string("core"),
//ngx_core_module_create_conf,
// ngx_core_module_init_conf
//};
//
module = ngx_modules[i]->ctx; //core module 模块只有create 和 init 两个回调函数 其他
if (module->create_conf) { // rv 返回ngx_core_conf_t
rv = module->create_conf(cycle);
if (rv == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
cycle->conf_ctx[ngx_modules[i]->index] = rv; //倒数第二级指针存放的是每个模块的create-conf 的指针
}
}
senv = environ;
ngx_memzero(&conf, sizeof(ngx_conf_t));
/* STUB: init array ? */
conf.args = ngx_array_create(pool, 10, sizeof(ngx_str_t));
if (conf.args == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
conf.temp_pool = ngx_create_pool(NGX_CYCLE_POOL_SIZE, log);
if (conf.temp_pool == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
conf.ctx = cycle->conf_ctx;
conf.cycle = cycle;
conf.pool = pool;
conf.log = log;
conf.module_type = NGX_CORE_MODULE;
conf.cmd_type = NGX_MAIN_CONF;
#if 0
log->log_level = NGX_LOG_DEBUG_ALL;
#endif
//2.4从命令行和配置文件里把全部配置更新到cycle的conf_ctx中:首先调用ngx_conf_param把命令行中的指令（-g directives）转换为配置结构并把指针增加到cycle.conf_ctx中;接着调用ngx_conf_parse(..,filename)把配置文件里的指令转换为配置结构并把指针增加到cycle.conf_ctx中。
if (ngx_conf_param(&conf) != NGX_CONF_OK) {
environ = senv;
ngx_destroy_cycle_pools(&conf);
return NULL;
}
if (ngx_conf_parse(&conf, &cycle->conf_file) != NGX_CONF_OK) {
environ = senv;
ngx_destroy_cycle_pools(&conf);
return NULL;
}
if (ngx_test_config && !ngx_quiet_mode) {
ngx_log_stderr(0, "the configuration file %s syntax is ok",
cycle->conf_file.data);
}
//2.5调用全部核心模块的init函数初始化全部核心模块的配置结构体
for (i = 0; ngx_modules[i]; i++) {
if (ngx_modules[i]->type != NGX_CORE_MODULE) {
continue;
}
module = ngx_modules[i]->ctx;
if (module->init_conf) {//调用模块的init_conf初始化全部核心模块的配置结构体
if (module->init_conf(cycle, cycle->conf_ctx[ngx_modules[i]->index])
== NGX_CONF_ERROR)
{
environ = senv;
ngx_destroy_cycle_pools(&conf);
return NULL;
}
}
}
if (ngx_process == NGX_PROCESS_SIGNALLER) {
return cycle;
}
//2.6获得核心模块ngx_core_dodule的配置结构，然后调用ngx_create_pidfile创建pid文件
ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_core_module);
if (ngx_test_config) {
if (ngx_create_pidfile(&ccf->pid, log) != NGX_OK) {
goto failed;
}
} else if (!ngx_is_init_cycle(old_cycle)) {
/*
* we do not create the pid file in the first ngx_init_cycle() call
* because we need to write the demonized process pid
*/
old_ccf = (ngx_core_conf_t *) ngx_get_conf(old_cycle->conf_ctx,
ngx_core_module);
if (ccf->pid.len != old_ccf->pid.len
|| ngx_strcmp(ccf->pid.data, old_ccf->pid.data) != 0)
{
/* new pid file name */
if (ngx_create_pidfile(&ccf->pid, log) != NGX_OK) {
goto failed;
}
ngx_delete_pidfile(old_cycle);
}
}
if (ngx_test_lockfile(cycle->lock_file.data, log) != NGX_OK) {
goto failed;
}
if (ngx_create_paths(cycle, ccf->user) != NGX_OK) {
goto failed;
}
if (ngx_log_open_default(cycle) != NGX_OK) {
goto failed;
}
/* open the new files */
part = &cycle->open_files.part;
file = part->elts;
for (i = 0; /* void */ ; i++) {
if (i >= part->nelts) {
if (part->next == NULL) {
break;
}
part = part->next;
file = part->elts;
i = 0;
}
if (file[i].name.len == 0) {
continue;
}
file[i].fd = ngx_open_file(file[i].name.data,
NGX_FILE_APPEND,
NGX_FILE_CREATE_OR_OPEN,
NGX_FILE_DEFAULT_ACCESS);
ngx_log_debug3(NGX_LOG_DEBUG_CORE, log, 0,
"log: %p %d \"%s\"",
&file[i], file[i].fd, file[i].name.data);
if (file[i].fd == NGX_INVALID_FILE) {
ngx_log_error(NGX_LOG_EMERG, log, ngx_errno,
ngx_open_file_n " \"%s\" failed",
file[i].name.data);
goto failed;
}
#if !(NGX_WIN32)
if (fcntl(file[i].fd, F_SETFD, FD_CLOEXEC) == -1) {
ngx_log_error(NGX_LOG_EMERG, log, ngx_errno,
"fcntl(FD_CLOEXEC) \"%s\" failed",
file[i].name.data);
goto failed;
}
#endif
}
cycle->log = &cycle->new_log;
pool->log = &cycle->new_log;
/* create shared memory */
part = &cycle->shared_memory.part;
shm_zone = part->elts;
for (i = 0; /* void */ ; i++) {
if (i >= part->nelts) {
if (part->next == NULL) {
break;
}
part = part->next;
shm_zone = part->elts;
i = 0;
}
if (shm_zone[i].shm.size == 0) {
ngx_log_error(NGX_LOG_EMERG, log, 0,
"zero size shared memory zone \"%V\"",
&shm_zone[i].shm.name);
goto failed;
}
shm_zone[i].shm.log = cycle->log;
opart = &old_cycle->shared_memory.part;
oshm_zone = opart->elts;
for (n = 0; /* void */ ; n++) {
if (n >= opart->nelts) {
if (opart->next == NULL) {
break;
}
opart = opart->next;
oshm_zone = opart->elts;
n = 0;
}
if (shm_zone[i].shm.name.len != oshm_zone[n].shm.name.len) {
continue;
}
if (ngx_strncmp(shm_zone[i].shm.name.data,
oshm_zone[n].shm.name.data,
shm_zone[i].shm.name.len)
!= 0)
{
continue;
}
if (shm_zone[i].tag == oshm_zone[n].tag
&& shm_zone[i].shm.size == oshm_zone[n].shm.size
&& !shm_zone[i].noreuse)
{
shm_zone[i].shm.addr = oshm_zone[n].shm.addr;
#if (NGX_WIN32)
shm_zone[i].shm.handle = oshm_zone[n].shm.handle;
#endif
if (shm_zone[i].init(&shm_zone[i], oshm_zone[n].data)
!= NGX_OK)
{
goto failed;
}
goto shm_zone_found;
}
ngx_shm_free(&oshm_zone[n].shm);
break;
}
if (ngx_shm_alloc(&shm_zone[i].shm) != NGX_OK) {
goto failed;
}
if (ngx_init_zone_pool(cycle, &shm_zone[i]) != NGX_OK) {
goto failed;
}
if (shm_zone[i].init(&shm_zone[i], NULL) != NGX_OK) {
goto failed;
}
shm_zone_found:
continue;
}
/* handle the listening sockets */
//2.8打开新文件，在第2步的时候提到cycle->open_files这个链表是空的。仅仅是给它预先分配了空间，并没有数据。这里之所以可能会有文件被打开，预计是前面读配置文件的时候，调用各个钩子的过程中，填充了这个链表，把ngx_open_file_t结构变量填充进来（结构体中包括要打开文件的路径信息），接着改动一下cycle的成员：cycle->log = &cycle->new_log;pool->log = &cycle->new_log;
//2.9创建共享内存，和open_files类似，在第2步的时候cycle－>share_memory也初始化为一个空的链表。也是预分配了空间，假设此时链表中已经被填充了ngx_shm_zone_t结构变量（当中包括须要共享内存的尺寸和标识等信息）。那么这里就会分配共享内存，而且调用合适的初始化钩子初始化分配的共享内存，每块共享内存都会有name标识。这里也会做一些排重，已经分配的就不会再去分配。从对open_files和share_memory的处理过程能够看出，nginx在资源管理上是集中分配的，请求资源的时候分配说明性的结构变量，然后在恰当的时机才去真正分配资源。
//2.10处理listening sockets，cycle->listening是ngx_listening_t结构的数组。把cycle->listening于old_cycle->listening进行比較。设置cycle->listening的一些状态信息。接着调用ngx_open_listening_sockets(cycle)启动cycle->listening中的全部监听socket，循环调用socket,bind,listen完毕服务端监听socket的启动。接着调用ngx_configure_listening_sockets(cycle)配置监听socket。会依据ngx_listening_t中的状态信息设置socket的读写缓存和TCP_DEFER_ACCEPT。
if (old_cycle->listening.nelts) {
ls = old_cycle->listening.elts;
for (i = 0; i < old_cycle->listening.nelts; i++) {
ls[i].remain = 0;
}
nls = cycle->listening.elts;
for (n = 0; n < cycle->listening.nelts; n++) {
for (i = 0; i < old_cycle->listening.nelts; i++) {
if (ls[i].ignore) {//标识位为1表示跳过设置ngx_lisenting_t中的套接字。
continue; //为0表示正常初始化套接字
}
if (ngx_cmp_sockaddr(nls[n].sockaddr, nls[n].socklen,
ls[i].sockaddr, ls[i].socklen, 1)
== NGX_OK)
{
nls[n].fd = ls[i].fd;
nls[n].previous = &ls[i];
ls[i].remain = 1;//不关闭已经打开的套接字
if (ls[i].backlog != nls[n].backlog) {
nls[n].listen = 1;//套接字已监听
}
#if (NGX_HAVE_DEFERRED_ACCEPT && defined SO_ACCEPTFILTER)
/*
* FreeBSD, except the most recent versions,
* could not remove accept filter
*/
nls[n].deferred_accept = ls[i].deferred_accept;
if (ls[i].accept_filter && nls[n].accept_filter) {
if (ngx_strcmp(ls[i].accept_filter,
nls[n].accept_filter)
!= 0)
{
nls[n].delete_deferred = 1;
nls[n].add_deferred = 1;
}
} else if (ls[i].accept_filter) {
nls[n].delete_deferred = 1;
} else if (nls[n].accept_filter) {
nls[n].add_deferred = 1;
}
#endif
#if (NGX_HAVE_DEFERRED_ACCEPT && defined TCP_DEFER_ACCEPT)
if (ls[i].deferred_accept && !nls[n].deferred_accept) {
nls[n].delete_deferred = 1;
} else if (ls[i].deferred_accept != nls[n].deferred_accept)
{
nls[n].add_deferred = 1;
}
#endif
break;
}
}
if (nls[n].fd == (ngx_socket_t) -1) {
nls[n].open = 1;
#if (NGX_HAVE_DEFERRED_ACCEPT && defined SO_ACCEPTFILTER)
if (nls[n].accept_filter) {
nls[n].add_deferred = 1;
}
#endif
#if (NGX_HAVE_DEFERRED_ACCEPT && defined TCP_DEFER_ACCEPT)
if (nls[n].deferred_accept) {
nls[n].add_deferred = 1;
}
#endif
}
}
} else {
ls = cycle->listening.elts;
for (i = 0; i < cycle->listening.nelts; i++) {
ls[i].open = 1;
#if (NGX_HAVE_DEFERRED_ACCEPT && defined SO_ACCEPTFILTER)
if (ls[i].accept_filter) {
ls[i].add_deferred = 1;
}
#endif
#if (NGX_HAVE_DEFERRED_ACCEPT && defined TCP_DEFER_ACCEPT)
if (ls[i].deferred_accept) {
ls[i].add_deferred = 1;
}
#endif
}
}
//在ngx_open_listening_sockets函数的代码中可以看到bind、
//listen等套接字函数的调用。最终创建完的监听套接字就在
//cycle结构体的listening域里 主程序中完成socket的基础设置，完成监听操作。
if (ngx_open_listening_sockets(cycle) != NGX_OK) {
goto failed;
}
if (!ngx_test_config) {
ngx_configure_listening_sockets(cycle);
}
/* commit the new cycle configuration */
if (!ngx_use_stderr) {
(void) ngx_log_redirect_stderr(cycle);
}
pool->log = cycle->log;
for (i = 0; ngx_modules[i]; i++) {// 调用全部模块的init_module
if (ngx_modules[i]->init_module) {
if (ngx_modules[i]->init_module(cycle) != NGX_OK) {
/* fatal */
exit(1);
}
}
}
/* close and delete stuff that lefts from an old cycle */
/* free the unnecessary shared memory */
opart = &old_cycle->shared_memory.part;
oshm_zone = opart->elts;
for (i = 0; /* void */ ; i++) {
if (i >= opart->nelts) {
if (opart->next == NULL) {
goto old_shm_zone_done;
}
opart = opart->next;
oshm_zone = opart->elts;
i = 0;
}
part = &cycle->shared_memory.part;
shm_zone = part->elts;
for (n = 0; /* void */ ; n++) {
if (n >= part->nelts) {
if (part->next == NULL) {
break;
}
part = part->next;
shm_zone = part->elts;
n = 0;
}
if (oshm_zone[i].shm.name.len == shm_zone[n].shm.name.len
&& ngx_strncmp(oshm_zone[i].shm.name.data,
shm_zone[n].shm.name.data,
oshm_zone[i].shm.name.len)
== 0)
{
goto live_shm_zone;
}
}
ngx_shm_free(&oshm_zone[i].shm);
live_shm_zone:
continue;
}
old_shm_zone_done:
/* close the unnecessary listening sockets */
ls = old_cycle->listening.elts;
for (i = 0; i < old_cycle->listening.nelts; i++) {
if (ls[i].remain || ls[i].fd == (ngx_socket_t) -1) {
continue;
}
if (ngx_close_socket(ls[i].fd) == -1) {
ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
ngx_close_socket_n " listening socket on %V failed",
&ls[i].addr_text);
}
#if (NGX_HAVE_UNIX_DOMAIN)
if (ls[i].sockaddr->sa_family == AF_UNIX) {
u_char *name;
name = ls[i].addr_text.data + sizeof("unix:") - 1;
ngx_log_error(NGX_LOG_WARN, cycle->log, 0,
"deleting socket %s", name);
if (ngx_delete_file(name) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_socket_errno,
ngx_delete_file_n " %s failed", name);
}
}
#endif
}
/* close the unnecessary open files */
part = &old_cycle->open_files.part;
file = part->elts;
for (i = 0; /* void */ ; i++) {
if (i >= part->nelts) {
if (part->next == NULL) {
break;
}
part = part->next;
file = part->elts;
i = 0;
}
if (file[i].fd == NGX_INVALID_FILE || file[i].fd == ngx_stderr) {
continue;
}
if (ngx_close_file(file[i].fd) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_EMERG, log, ngx_errno,
ngx_close_file_n " \"%s\" failed",
file[i].name.data);
}
}
ngx_destroy_pool(conf.temp_pool);
if (ngx_process == NGX_PROCESS_MASTER || ngx_is_init_cycle(old_cycle)) {
/*
* perl_destruct() frees environ, if it is not the same as it was at
* perl_construct() time, therefore we save the previous cycle
* environment before ngx_conf_parse() where it will be changed.
*/
env = environ;
environ = senv;
ngx_destroy_pool(old_cycle->pool);
cycle->old_cycle = NULL;
environ = env;
return cycle;
}
if (ngx_temp_pool == NULL) {
ngx_temp_pool = ngx_create_pool(128, cycle->log);
if (ngx_temp_pool == NULL) {
ngx_log_error(NGX_LOG_EMERG, cycle->log, 0,
"could not create ngx_temp_pool");
exit(1);
}
n = 10;
ngx_old_cycles.elts = ngx_pcalloc(ngx_temp_pool,
n * sizeof(ngx_cycle_t *));
if (ngx_old_cycles.elts == NULL) {
exit(1);
}
ngx_old_cycles.nelts = 0;
ngx_old_cycles.size = sizeof(ngx_cycle_t *);
ngx_old_cycles.nalloc = n;
ngx_old_cycles.pool = ngx_temp_pool;
ngx_cleaner_event.handler = ngx_clean_old_cycles;
ngx_cleaner_event.log = cycle->log;
ngx_cleaner_event.data = &dumb;
dumb.fd = (ngx_socket_t) -1;
}
ngx_temp_pool->log = cycle->log;
old = ngx_array_push(&ngx_old_cycles);
if (old == NULL) {
exit(1);
}
*old = old_cycle;
if (!ngx_cleaner_event.timer_set) {
ngx_add_timer(&ngx_cleaner_event, 30000);
ngx_cleaner_event.timer_set = 1;
}
return cycle;
failed:
if (!ngx_is_init_cycle(old_cycle)) {
old_ccf = (ngx_core_conf_t *) ngx_get_conf(old_cycle->conf_ctx,
ngx_core_module);
if (old_ccf->environment) {
environ = old_ccf->environment;
}
}
/* rollback the new cycle configuration */
part = &cycle->open_files.part;
file = part->elts;
for (i = 0; /* void */ ; i++) {
if (i >= part->nelts) {
if (part->next == NULL) {
break;
}
part = part->next;
file = part->elts;
i = 0;
}
if (file[i].fd == NGX_INVALID_FILE || file[i].fd == ngx_stderr) {
continue;
}
if (ngx_close_file(file[i].fd) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_EMERG, log, ngx_errno,
ngx_close_file_n " \"%s\" failed",
file[i].name.data);
}
}
if (ngx_test_config) {
ngx_destroy_cycle_pools(&conf);
return NULL;
}
ls = cycle->listening.elts;
for (i = 0; i < cycle->listening.nelts; i++) {
if (ls[i].fd == (ngx_socket_t) -1 || !ls[i].open) {
continue;
}
if (ngx_close_socket(ls[i].fd) == -1) {
ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
ngx_close_socket_n " %V failed",
&ls[i].addr_text);
}
}
ngx_destroy_cycle_pools(&conf);
return NULL;
}
ngx_int_t
ngx_http_srcache_process_header(ngx_http_request_t *r, ngx_buf_t *b)
{
ngx_int_t rc;
ngx_table_elt_t header;
ngx_http_srcache_ctx_t *ctx;
off_t len, rest;
unsigned truncate;
u_char *p;
ngx_http_srcache_header_t *hh;
ngx_http_srcache_main_conf_t *smcf;
smcf = ngx_http_get_module_main_conf(r, ngx_http_srcache_filter_module);
ctx = ngx_http_get_module_ctx(r, ngx_http_srcache_filter_module);
for ( ;; ) {
len = b->last - b->pos;
rest = ctx->header_buf->end - ctx->header_buf->last;
dd("len: %d, rest: %d", (int) len, (int) rest);
if (len > rest) {
len = rest;
truncate = 1;
} else {
truncate = 0;
}
ctx->header_buf->last = ngx_copy(ctx->header_buf->last, b->pos,
(size_t) len);
p = ctx->header_buf->pos;
rc = ngx_http_parse_header_line(r, ctx->header_buf, 1);
b->pos += ctx->header_buf->pos - p;
if (rc == NGX_OK) {
/* a header line has been parsed successfully */
ngx_memzero(&header, sizeof(ngx_table_elt_t));
header.hash = r->header_hash;
header.key.len = r->header_name_end - r->header_name_start;
header.value.len = r->header_end - r->header_start;
header.key.data = ngx_pnalloc(r->pool,
header.key.len + 1
+ header.value.len + 1
+ header.key.len);
if (header.key.data == NULL) {
return NGX_ERROR;
}
header.value.data = header.key.data + header.key.len + 1;
header.lowcase_key = header.key.data + header.key.len + 1
+ header.value.len + 1;
ngx_cpystrn(header.key.data, r->header_name_start,
header.key.len + 1);
ngx_cpystrn(header.value.data, r->header_start,
header.value.len + 1);
if (header.key.len == r->lowcase_index) {
ngx_memcpy(header.lowcase_key, r->lowcase_header,
header.key.len);
} else {
ngx_strlow(header.lowcase_key, header.key.data, header.key.len);
}
hh = ngx_hash_find(&smcf->headers_in_hash, header.hash,
header.lowcase_key, header.key.len);
if (hh) {
if (hh->handler(r->parent, &header, hh->offset) != NGX_OK) {
return NGX_ERROR;
}
} else {
if (ngx_http_srcache_process_header_line(r->parent, &header, 0)
!= NGX_OK)
{
return NGX_ERROR;
}
}
ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"srcache_fetch header: \"%V: %V\"",
&header.key, &header.value);
ctx->header_buf->pos = ctx->header_buf->start;
ctx->header_buf->last = ctx->header_buf->start;
continue;
}
if (rc == NGX_HTTP_PARSE_HEADER_DONE) {
/* a whole header has been parsed successfully */
ctx->header_buf->pos = ctx->header_buf->start;
ctx->header_buf->last = ctx->header_buf->start;
ngx_pfree(r->pool, ctx->header_buf->start);
ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"srcache_fetch header done");
return NGX_OK;
}
if (rc == NGX_AGAIN) {
if (truncate) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"srcache_fetch: header buffer overflown "
"(maybe you should consider increasing "
"srcache_header_buffer_size?)");
ctx->header_buf->pos = ctx->header_buf->start;
ctx->header_buf->last = ctx->header_buf->start;
ngx_pfree(r->pool, ctx->header_buf->start);
return NGX_ERROR;
}
return NGX_AGAIN;
}
/* there was error while a header line parsing */
ctx->header_buf->pos = ctx->header_buf->start;
ctx->header_buf->last = ctx->header_buf->start;
ngx_pfree(r->pool, ctx->header_buf->start);
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"srcache_fetch: cache sent invalid header");
return NGX_ERROR;
}
}
static ngx_int_t
ngx_stream_proxy_ssl_name(ngx_stream_session_t *s)
{
u_char *p, *last;
ngx_str_t name;
ngx_stream_upstream_t *u;
ngx_stream_proxy_srv_conf_t *pscf;
pscf = ngx_stream_get_module_srv_conf(s, ngx_stream_proxy_module);
u = s->upstream;
name = pscf->ssl_name;
if (name.len == 0) {
name = pscf->upstream->host;
}
if (name.len == 0) {
goto done;
}
/*
* ssl name here may contain port, strip it for compatibility
* with the http module
*/
p = name.data;
last = name.data + name.len;
if (*p == '[') {
p = ngx_strlchr(p, last, ']');
if (p == NULL) {
p = name.data;
}
}
p = ngx_strlchr(p, last, ':');
if (p != NULL) {
name.len = p - name.data;
}
if (!pscf->ssl_server_name) {
goto done;
}
#ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME
/* as per RFC 6066, literal IPv4 and IPv6 addresses are not permitted */
if (name.len == 0 || *name.data == '[') {
goto done;
}
if (ngx_inet_addr(name.data, name.len) != INADDR_NONE) {
goto done;
}
/*
* SSL_set_tlsext_host_name() needs a null-terminated string,
* hence we explicitly null-terminate name here
*/
p = ngx_pnalloc(s->connection->pool, name.len + 1);
if (p == NULL) {
return NGX_ERROR;
}
(void) ngx_cpystrn(p, name.data, name.len + 1);
name.data = p;
ngx_log_debug1(NGX_LOG_DEBUG_STREAM, s->connection->log, 0,
"upstream SSL server name: \"%s\"", name.data);
if (SSL_set_tlsext_host_name(u->peer.connection->ssl->connection, name.data)
== 0)
{
ngx_ssl_error(NGX_LOG_ERR, s->connection->log, 0,
"SSL_set_tlsext_host_name(\"%s\") failed", name.data);
return NGX_ERROR;
}
#endif
done:
u->ssl_name = name;
return NGX_OK;
}
static u_char *ngx_http_info_build_response_json_end(u_char *rbuf)
{
rbuf = ngx_cpystrn(rbuf, (u_char *)"}\n", (sizeof("}\n") - 1) + 1);
return rbuf;
}
//get the index
static ngx_http_dclass_kvdata_str *ngx_http_dclass_index(ngx_http_request_t *r)
{
ngx_uint_t i;
u_char *hfield=NULL;
ngx_uint_t key;
ngx_str_t str;
ngx_http_variable_value_t *val;
const dclass_keyvalue *kvd;
ngx_list_part_t *part;
ngx_table_elt_t *header;
ngx_http_dclass_conf_t *cf;
ngx_http_dclass_kvdata_str *kvs;
cf = ngx_http_get_module_loc_conf(r,ngx_http_dclass_module);
if(!cf->enable || !cf->head[0])
return NULL;
ngx_str_set(&str,"dclass_ptr");
key=ngx_hash_key(str.data,str.len);
val=ngx_http_get_variable(r, &str, key);
if(val && val->valid && val->data && !ngx_rstrncmp((u_char*)"ptr",val->data,3))
{
kvs=(ngx_http_dclass_kvdata_str*)val->data;
ngx_log_error(NGX_HTTP_DCLASS_LOGLEVEL,r->connection->log,0,"dClass: classify cache: '%s'",kvs->kvd[0]->id);
return kvs;
}
if(!*cf->hfield.data)
{
if(r->headers_in.user_agent)
hfield = r->headers_in.user_agent->value.data;
}
else
{
part=&r->headers_in.headers.part;
header=part->elts;
for (i=0;;i++)
{
if(i>=part->nelts)
{
if(part->next==NULL)
break;
part=part->next;
header=part->elts;
i=0;
}
if(!ngx_strcasecmp(cf->hfield.data,header[i].key.data))
{
hfield=header[i].value.data;
break;
}
}
}
if(hfield==NULL)
return NULL;
kvs=(ngx_http_dclass_kvdata_str*)ngx_pcalloc(r->pool,sizeof(ngx_http_dclass_kvdata_str));
if(kvs==NULL)
return NULL;
for(i=0;i<NGX_HTTP_DCLASS_INDEXES && cf->head[i];i++)
{
kvd=dclass_classify(cf->head[i],(char*)hfield);
kvs->kvd[i]=kvd;
ngx_cpystrn(kvs->data,(u_char*)"ptr",4);
ngx_log_error(NGX_HTTP_DCLASS_LOGLEVEL,r->connection->log,0,"dClass: classify %d: '%s' => '%s'",i,hfield,kvd->id);
}
return kvs;
}
static ngx_int_t
ngx_http_filter_cache_header_filter(ngx_http_request_t *r)
{
ngx_http_filter_cache_ctx_t *ctx = NULL;
ngx_http_filter_cache_conf_t *conf = NULL;
time_t now, valid;
ngx_temp_file_t *tf;
ngx_chain_t out;
ssize_t offset;
ngx_list_part_t *part;
ngx_table_elt_t *h;
ngx_uint_t i;
u_char *p;
size_t len;
ngx_pool_cleanup_t *cln = NULL;
ngx_http_filter_cache_meta_t meta;
if(r != r->main) {
/*just skip as we got headers in main*/
return ngx_http_next_header_filter(r);
}
conf = ngx_http_get_module_loc_conf(r, ngx_http_filter_cache_module);
switch (ngx_http_test_predicates(r, conf->upstream.no_cache)) {
case NGX_ERROR:
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, __FILE__" ngx_http_test_predicates returned an error for no_cache");
return NGX_ERROR;
case NGX_DECLINED:
goto nocache;
default: /* NGX_OK */
break;
}
ctx = r->filter_cache;
if(!ctx || (FILTER_DONOTCACHE == ctx->cacheable)) {
goto nocache;
}
/* ngx_http_filter_cache_create(r); */
if (ctx->cache && ctx->cache->file.fd != NGX_INVALID_FILE) {
ngx_pool_run_cleanup_file(r->pool, ctx->cache->file.fd);
ctx->cache->file.fd = NGX_INVALID_FILE;
}
ctx->cache->valid_sec = 0;
now = ngx_time();
valid = 0;
valid = ngx_http_filter_cache_valid(conf->upstream.cache_valid,
r->headers_out.status);
if (valid) {
ctx->cache->valid_sec = now + valid;
} else {
goto nocache;
}
tf = ngx_pcalloc(r->pool, sizeof(ngx_temp_file_t));
if (tf == NULL) {
return NGX_ERROR;
}
tf->file.fd = NGX_INVALID_FILE;
tf->file.log = r->connection->log;
tf->path = conf->upstream.temp_path;
tf->pool = r->pool;
tf->persistent = 1;
if (ngx_create_temp_file(&tf->file, tf->path, tf->pool,
tf->persistent, tf->clean, tf->access)
!= NGX_OK) {
return NGX_ERROR;
}
ctx->tf = tf;
cln = ngx_pool_cleanup_add(r->pool, 0);
if (cln == NULL) {
return NGX_ERROR;
}
cln->handler = filter_cache_cleanup;
cln->data = ctx;
ctx->buffer.pos = ctx->buffer.start = ngx_palloc(r->pool, conf->upstream.buffer_size);
ctx->buffer.end = ctx->buffer.start + conf->upstream.buffer_size;
ctx->buffer.temporary = 1;
ctx->buffer.memory = 1;
ctx->buffer.last_buf = 1;
ctx->buffer.pos += ctx->cache->header_start;
ctx->cache->last_modified = r->headers_out.last_modified_time;
ctx->cache->date = now;
/* Headers */
/* fill in the metadata*/
meta.status = r->headers_out.status;
#if (NGX_HTTP_GZIP)
meta.gzip_vary = r->gzip_vary; /* Note: there is still some wierdness to how gzip_vary works...*/
#endif
meta.last_modified_time = r->headers_out.last_modified_time;
ngx_memcpy((void *)(ctx->buffer.pos), (void *)(&meta), sizeof(ngx_http_filter_cache_meta_t) );
ctx->buffer.pos += sizeof(ngx_http_filter_cache_meta_t);
/* Headers taht aren't in teh table for some reason */
/*Do we need to try to set it if it's not set???*/
/* Content Type */
if ( r->headers_out.content_type.data ) {
p = memchr((void *)r->headers_out.content_type.data, ';', r->headers_out.content_type.len );
if ( p ) {
len = p - r->headers_out.content_type.data;
ngx_cpystrn( ctx->buffer.pos, r->headers_out.content_type.data, len + 1);
ctx->buffer.pos += len + 1;
}
else {
ngx_cpystrn( ctx->buffer.pos, r->headers_out.content_type.data, r->headers_out.content_type.len + 1 );
ctx->buffer.pos += r->headers_out.content_type.len + 1;
}
}
else {
*ctx->buffer.pos = (u_char)'\0';
ctx->buffer.pos++;
}
/* Charset */
if ( r->headers_out.charset.data ) {
ngx_cpystrn( ctx->buffer.pos, r->headers_out.charset.data, r->headers_out.charset.len + 1 );
ctx->buffer.pos += r->headers_out.charset.len + 1;
}
else {
*ctx->buffer.pos = (u_char)'\0';
ctx->buffer.pos++;
}
/* Content Encoding */
if ( r->headers_out.content_encoding && r->headers_out.content_encoding->value.len) {
ngx_cpystrn( ctx->buffer.pos, r->headers_out.content_encoding->value.data, r->headers_out.content_encoding->value.len + 1 );
ctx->buffer.pos += r->headers_out.content_encoding->value.len + 1;
}
else {
*ctx->buffer.pos = (u_char)'\0';
ctx->buffer.pos++;
}
/* Last-Modified */
if(r->headers_out.last_modified_time && r->headers_out.last_modified && r->headers_out.last_modified->value.len) {
ngx_cpystrn( ctx->buffer.pos, r->headers_out.last_modified->value.data, r->headers_out.last_modified->value.len + 1 );
ctx->buffer.pos += r->headers_out.last_modified->value.len + 1;
} else {
*ctx->buffer.pos = (u_char)'\0';
ctx->buffer.pos++;
}
/* XXX: is last-modified special???*/
/* Everything From the Table */
part = &r->headers_out.headers.part;
h = part->elts;
for (i=0; /* void */; i++) {
if ( i >= part->nelts || !part->nelts ) {
if ( part->next == NULL ) {
ctx->cacheable = FILTER_CACHEABLE;
break;
}
part = part->next;
h = part->elts;
i = 0;
}
/*need to be really sure this header is "valid"*/
/* if(h[i].key.len && h[i].value.len && h[i].hash && h[i].lowcase_key) {*/
/* if(!h[i].lowcase_key) { */
/* if((h[i].lowcase_key = ngx_pnalloc(r->pool, h->key.len +1)) == NULL) { */
/* continue; */
/* } */
/* ngx_strlow(h[i].lowcase_key, h[i].key.data, h[i].key.len); */
/* } */
/* if(!h[i].hash) { */
/* h[i].hash = ngx_hash_key_lc(h[i].key.data, h[i].key.len); */
/* } */
/* if (ngx_hash_find(&conf->upstream.hide_headers_hash, h[i].hash, */
/* h[i].lowcase_key, h[i].key.len)) */
/* { */
/* continue; */
/* } */
if(h[i].key.len && h[i].value.len) {
if(find_string_in_array(&(h[i].key), conf->upstream.hide_headers)){
continue;
}
if ( (ngx_uint_t)(h[i].key.len + h[i].value.len + 4) > (ngx_uint_t)(ctx->buffer.last - ctx->buffer.pos) ) {
ctx->cacheable = FILTER_DONOTCACHE;
break;
}
ngx_cpystrn( ctx->buffer.pos, h[i].key.data, h[i].key.len + 1 );
ctx->buffer.pos += h[i].key.len + 1;
ngx_cpystrn( ctx->buffer.pos, h[i].value.data, h[i].value.len + 1 );
ctx->buffer.pos += h[i].value.len + 1;
}
}
if(FILTER_CACHEABLE != ctx->cacheable) {
goto nocache;
}
ctx->buffer.last = ctx->buffer.pos;
ctx->cache->body_start = (u_short) (ctx->buffer.pos - ctx->buffer.start);
ngx_http_filter_cache_set_header(r, ctx->buffer.start);
ctx->cache->date = now;
/*write to temp file*/
ctx->buffer.pos = ctx->buffer.start;
out.buf = &ctx->buffer;
out.next = NULL;
offset = ngx_write_chain_to_temp_file(tf, &out);
tf->offset += offset;
r->main_filter_need_in_memory = 1;
return ngx_http_next_header_filter(r);
nocache:
if(ctx) {
ctx->cacheable = FILTER_DONOTCACHE;
/* if(ctx->cache) { */
/* ngx_http_filter_cache_free(ctx->cache, ctx->tf); */
/* } */
}
return ngx_http_next_header_filter(r);
}
static ngx_int_t
ngx_dso_full_name(ngx_conf_t *cf, ngx_dso_conf_ctx_t *ctx,
ngx_str_t *name)
{
size_t len, size;
u_char *p, *n, *prefix;
ngx_cycle_t *cycle;
cycle = cf->cycle;
if (name->data[0] == '/') {
return NGX_OK;
}
if (ctx->path.data == NULL) {
if (ngx_default_module_prefix.data[0] != '/') {
prefix = cycle->prefix.data;
len = cycle->prefix.len;
size = len + ngx_default_module_prefix.len + name->len + 1;
} else {
prefix = ngx_default_module_prefix.data;
len = ngx_default_module_prefix.len;
size = len + name->len + 1;
}
} else {
if (ctx->path.data[0] != '/') {
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"the path (\"%V\") of dso module "
"should be an absolute path", &ctx->path);
return NGX_ERROR;
}
len = ctx->path.len;
prefix = ctx->path.data;
size = len + name->len + 1;
}
n = ngx_pnalloc(cycle->pool, size + 1);
if (n == NULL) {
return NGX_ERROR;
}
p = ngx_cpymem(n, prefix, len);
if (ctx->path.data == NULL
&& ngx_default_module_prefix.data[0] != '/')
{
p = ngx_cpymem(p, ngx_default_module_prefix.data,
ngx_default_module_prefix.len);
}
p = ngx_cpymem(p, "/", 1);
ngx_cpystrn(p, name->data, name->len + 1);
name->len = size;
name->data = n;
return NGX_OK;
}
static char *
ngx_http_scgi_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child)
{
ngx_http_scgi_loc_conf_t *prev = parent;
ngx_http_scgi_loc_conf_t *conf = child;
u_char *p;
size_t size;
uintptr_t *code;
ngx_uint_t i;
ngx_array_t headers_names;
ngx_keyval_t *src;
ngx_hash_key_t *hk;
ngx_hash_init_t hash;
ngx_http_core_loc_conf_t *clcf;
ngx_http_script_compile_t sc;
ngx_http_script_copy_code_t *copy;
if (conf->upstream.store != 0) {
ngx_conf_merge_value(conf->upstream.store, prev->upstream.store, 0);
if (conf->upstream.store_lengths == NULL) {
conf->upstream.store_lengths = prev->upstream.store_lengths;
conf->upstream.store_values = prev->upstream.store_values;
}
}
ngx_conf_merge_uint_value(conf->upstream.store_access,
prev->upstream.store_access, 0600);
ngx_conf_merge_value(conf->upstream.buffering,
prev->upstream.buffering, 1);
ngx_conf_merge_value(conf->upstream.ignore_client_abort,
prev->upstream.ignore_client_abort, 0);
ngx_conf_merge_msec_value(conf->upstream.connect_timeout,
prev->upstream.connect_timeout, 60000);
ngx_conf_merge_msec_value(conf->upstream.send_timeout,
prev->upstream.send_timeout, 60000);
ngx_conf_merge_msec_value(conf->upstream.read_timeout,
prev->upstream.read_timeout, 60000);
ngx_conf_merge_size_value(conf->upstream.send_lowat,
prev->upstream.send_lowat, 0);
ngx_conf_merge_size_value(conf->upstream.buffer_size,
prev->upstream.buffer_size,
(size_t) ngx_pagesize);
ngx_conf_merge_bufs_value(conf->upstream.bufs, prev->upstream.bufs,
8, ngx_pagesize);
if (conf->upstream.bufs.num < 2) {
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"there must be at least 2 \"scgi_buffers\"");
return NGX_CONF_ERROR;
}
size = conf->upstream.buffer_size;
if (size < conf->upstream.bufs.size) {
size = conf->upstream.bufs.size;
}
ngx_conf_merge_size_value(conf->upstream.busy_buffers_size_conf,
prev->upstream.busy_buffers_size_conf,
NGX_CONF_UNSET_SIZE);
if (conf->upstream.busy_buffers_size_conf == NGX_CONF_UNSET_SIZE) {
conf->upstream.busy_buffers_size = 2 * size;
} else {
conf->upstream.busy_buffers_size =
conf->upstream.busy_buffers_size_conf;
}
if (conf->upstream.busy_buffers_size < size) {
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"\"scgi_busy_buffers_size\" must be equal or bigger "
"than maximum of the value of \"scgi_buffer_size\" and "
"one of the \"scgi_buffers\"");
return NGX_CONF_ERROR;
}
if (conf->upstream.busy_buffers_size
> (conf->upstream.bufs.num - 1) * conf->upstream.bufs.size)
{
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"\"scgi_busy_buffers_size\" must be less than "
"the size of all \"scgi_buffers\" minus one buffer");
return NGX_CONF_ERROR;
}
ngx_conf_merge_size_value(conf->upstream.temp_file_write_size_conf,
prev->upstream.temp_file_write_size_conf,
NGX_CONF_UNSET_SIZE);
if (conf->upstream.temp_file_write_size_conf == NGX_CONF_UNSET_SIZE) {
conf->upstream.temp_file_write_size = 2 * size;
} else {
conf->upstream.temp_file_write_size =
conf->upstream.temp_file_write_size_conf;
}
if (conf->upstream.temp_file_write_size < size) {
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"\"scgi_temp_file_write_size\" must be equal or bigger than "
"maximum of the value of \"scgi_buffer_size\" and "
"one of the \"scgi_buffers\"");
return NGX_CONF_ERROR;
}
ngx_conf_merge_size_value(conf->upstream.max_temp_file_size_conf,
prev->upstream.max_temp_file_size_conf,
NGX_CONF_UNSET_SIZE);
if (conf->upstream.max_temp_file_size_conf == NGX_CONF_UNSET_SIZE) {
conf->upstream.max_temp_file_size = 1024 * 1024 * 1024;
} else {
conf->upstream.max_temp_file_size =
conf->upstream.max_temp_file_size_conf;
}
if (conf->upstream.max_temp_file_size != 0
&& conf->upstream.max_temp_file_size < size) {
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"\"scgi_max_temp_file_size\" must be equal to zero to disable "
"the temporary files usage or must be equal or bigger than "
"maximum of the value of \"scgi_buffer_size\" and "
"one of the \"scgi_buffers\"");
return NGX_CONF_ERROR;
}
ngx_conf_merge_bitmask_value(conf->upstream.ignore_headers,
prev->upstream.ignore_headers,
NGX_CONF_BITMASK_SET);
ngx_conf_merge_bitmask_value(conf->upstream.next_upstream,
prev->upstream.next_upstream,
(NGX_CONF_BITMASK_SET
|NGX_HTTP_UPSTREAM_FT_ERROR
|NGX_HTTP_UPSTREAM_FT_TIMEOUT));
if (conf->upstream.next_upstream & NGX_HTTP_UPSTREAM_FT_OFF) {
conf->upstream.next_upstream = NGX_CONF_BITMASK_SET
|NGX_HTTP_UPSTREAM_FT_OFF;
}
if (ngx_conf_merge_path_value(cf, &conf->upstream.temp_path,
prev->upstream.temp_path,
&ngx_http_scgi_temp_path)
!= NGX_OK)
{
return NGX_CONF_ERROR;
}
#if (NGX_HTTP_CACHE)
ngx_conf_merge_ptr_value(conf->upstream.cache,
prev->upstream.cache, NULL);
if (conf->upstream.cache && conf->upstream.cache->data == NULL) {
ngx_shm_zone_t *shm_zone;
shm_zone = conf->upstream.cache;
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"\"scgi_cache\" zone \"%V\" is unknown",
&shm_zone->shm.name);
return NGX_CONF_ERROR;
}
ngx_conf_merge_uint_value(conf->upstream.cache_min_uses,
prev->upstream.cache_min_uses, 1);
ngx_conf_merge_bitmask_value(conf->upstream.cache_use_stale,
prev->upstream.cache_use_stale,
(NGX_CONF_BITMASK_SET
|NGX_HTTP_UPSTREAM_FT_OFF));
if (conf->upstream.cache_use_stale & NGX_HTTP_UPSTREAM_FT_OFF) {
conf->upstream.cache_use_stale = NGX_CONF_BITMASK_SET
|NGX_HTTP_UPSTREAM_FT_OFF;
}
if (conf->upstream.cache_methods == 0) {
conf->upstream.cache_methods = prev->upstream.cache_methods;
}
conf->upstream.cache_methods |= NGX_HTTP_GET|NGX_HTTP_HEAD;
ngx_conf_merge_ptr_value(conf->upstream.cache_bypass,
prev->upstream.cache_bypass, NULL);
ngx_conf_merge_ptr_value(conf->upstream.no_cache,
prev->upstream.no_cache, NULL);
ngx_conf_merge_ptr_value(conf->upstream.cache_valid,
prev->upstream.cache_valid, NULL);
if (conf->cache_key.value.data == NULL) {
conf->cache_key = prev->cache_key;
}
#endif
ngx_conf_merge_value(conf->upstream.pass_request_headers,
prev->upstream.pass_request_headers, 1);
ngx_conf_merge_value(conf->upstream.pass_request_body,
prev->upstream.pass_request_body, 1);
ngx_conf_merge_value(conf->upstream.intercept_errors,
prev->upstream.intercept_errors, 0);
hash.max_size = 512;
hash.bucket_size = ngx_align(64, ngx_cacheline_size);
hash.name = "scgi_hide_headers_hash";
if (ngx_http_upstream_hide_headers_hash(cf, &conf->upstream,
&prev->upstream, ngx_http_scgi_hide_headers, &hash)
!= NGX_OK)
{
return NGX_CONF_ERROR;
}
if (conf->upstream.upstream == NULL) {
conf->upstream.upstream = prev->upstream.upstream;
}
if (conf->scgi_lengths == NULL) {
conf->scgi_lengths = prev->scgi_lengths;
conf->scgi_values = prev->scgi_values;
}
if (conf->upstream.upstream || conf->scgi_lengths) {
clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module);
if (clcf->handler == NULL && clcf->lmt_excpt) {
clcf->handler = ngx_http_scgi_handler;
}
}
if (conf->params_source == NULL) {
conf->flushes = prev->flushes;
conf->params_len = prev->params_len;
conf->params = prev->params;
conf->params_source = prev->params_source;
conf->headers_hash = prev->headers_hash;
#if (NGX_HTTP_CACHE)
if (conf->params_source == NULL) {
if ((conf->upstream.cache == NULL)
== (prev->upstream.cache == NULL))
{
return NGX_CONF_OK;
}
/* 6 is a number of ngx_http_scgi_cache_headers entries */
conf->params_source = ngx_array_create(cf->pool, 6,
sizeof(ngx_keyval_t));
if (conf->params_source == NULL) {
return NGX_CONF_ERROR;
}
}
#else
if (conf->params_source == NULL) {
return NGX_CONF_OK;
}
#endif
}
conf->params_len = ngx_array_create(cf->pool, 64, 1);
if (conf->params_len == NULL) {
return NGX_CONF_ERROR;
}
conf->params = ngx_array_create(cf->pool, 512, 1);
if (conf->params == NULL) {
return NGX_CONF_ERROR;
}
if (ngx_array_init(&headers_names, cf->temp_pool, 4, sizeof(ngx_hash_key_t))
!= NGX_OK)
{
return NGX_CONF_ERROR;
}
src = conf->params_source->elts;
#if (NGX_HTTP_CACHE)
if (conf->upstream.cache) {
ngx_keyval_t *h, *s;
for (h = ngx_http_scgi_cache_headers; h->key.len; h++) {
for (i = 0; i < conf->params_source->nelts; i++) {
if (ngx_strcasecmp(h->key.data, src[i].key.data) == 0) {
goto next;
}
}
s = ngx_array_push(conf->params_source);
if (s == NULL) {
return NGX_CONF_ERROR;
}
*s = *h;
src = conf->params_source->elts;
next:
h++;
}
}
#endif
for (i = 0; i < conf->params_source->nelts; i++) {
if (src[i].key.len > sizeof("HTTP_") - 1
&& ngx_strncmp(src[i].key.data, "HTTP_", sizeof("HTTP_") - 1) == 0)
{
hk = ngx_array_push(&headers_names);
if (hk == NULL) {
return NGX_CONF_ERROR;
}
hk->key.len = src[i].key.len - 5;
hk->key.data = src[i].key.data + 5;
hk->key_hash = ngx_hash_key_lc(hk->key.data, hk->key.len);
hk->value = (void *) 1;
if (src[i].value.len == 0) {
continue;
}
}
copy = ngx_array_push_n(conf->params_len,
sizeof(ngx_http_script_copy_code_t));
if (copy == NULL) {
return NGX_CONF_ERROR;
}
copy->code = (ngx_http_script_code_pt) ngx_http_script_copy_len_code;
copy->len = src[i].key.len + 1;
size = (sizeof(ngx_http_script_copy_code_t)
+ src[i].key.len + 1 + sizeof(uintptr_t) - 1)
& ~(sizeof(uintptr_t) - 1);
copy = ngx_array_push_n(conf->params, size);
if (copy == NULL) {
return NGX_CONF_ERROR;
}
copy->code = ngx_http_script_copy_code;
copy->len = src[i].key.len + 1;
p = (u_char *) copy + sizeof(ngx_http_script_copy_code_t);
(void) ngx_cpystrn(p, src[i].key.data, src[i].key.len + 1);
ngx_memzero(&sc, sizeof(ngx_http_script_compile_t));
sc.cf = cf;
sc.source = &src[i].value;
sc.flushes = &conf->flushes;
sc.lengths = &conf->params_len;
sc.values = &conf->params;
if (ngx_http_script_compile(&sc) != NGX_OK) {
return NGX_CONF_ERROR;
}
code = ngx_array_push_n(conf->params_len, sizeof(uintptr_t));
if (code == NULL) {
return NGX_CONF_ERROR;
}
*code = (uintptr_t) NULL;
code = ngx_array_push_n(conf->params, sizeof(uintptr_t));
if (code == NULL) {
return NGX_CONF_ERROR;
}
*code = (uintptr_t) NULL;
}
code = ngx_array_push_n(conf->params_len, sizeof(uintptr_t));
if (code == NULL) {
return NGX_CONF_ERROR;
}
*code = (uintptr_t) NULL;
code = ngx_array_push_n(conf->params, sizeof(uintptr_t));
if (code == NULL) {
return NGX_CONF_ERROR;
}
*code = (uintptr_t) NULL;
conf->header_params = headers_names.nelts;
hash.hash = &conf->headers_hash;
hash.key = ngx_hash_key_lc;
hash.max_size = 512;
hash.bucket_size = 64;
hash.name = "scgi_params_hash";
hash.pool = cf->pool;
hash.temp_pool = NULL;
if (ngx_hash_init(&hash, headers_names.elts, headers_names.nelts) != NGX_OK)
{
return NGX_CONF_ERROR;
}
return NGX_CONF_OK;
}
void
ngx_configure_listening_sockets(ngx_cycle_t *cycle)
{
int value;
ngx_uint_t i;
ngx_listening_t *ls;
#if (NGX_HAVE_DEFERRED_ACCEPT && defined SO_ACCEPTFILTER)
struct accept_filter_arg af;
#endif
ls = cycle->listening.elts;
for (i = 0; i < cycle->listening.nelts; i++) {
ls[i].log = *ls[i].logp;
if (ls[i].rcvbuf != -1) {
if (setsockopt(ls[i].fd, SOL_SOCKET, SO_RCVBUF,
(const void *) &ls[i].rcvbuf, sizeof(int))
== -1)
{
ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
"setsockopt(SO_RCVBUF, %d) %V failed, ignored",
ls[i].rcvbuf, &ls[i].addr_text);
}
}
if (ls[i].sndbuf != -1) {
if (setsockopt(ls[i].fd, SOL_SOCKET, SO_SNDBUF,
(const void *) &ls[i].sndbuf, sizeof(int))
== -1)
{
ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
"setsockopt(SO_SNDBUF, %d) %V failed, ignored",
ls[i].sndbuf, &ls[i].addr_text);
}
}
if (ls[i].keepalive) {
value = (ls[i].keepalive == 1) ? 1 : 0;
if (setsockopt(ls[i].fd, SOL_SOCKET, SO_KEEPALIVE,
(const void *) &value, sizeof(int))
== -1)
{
ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
"setsockopt(SO_KEEPALIVE, %d) %V failed, ignored",
value, &ls[i].addr_text);
}
}
#if (NGX_HAVE_KEEPALIVE_TUNABLE)
if (ls[i].keepidle) {
value = ls[i].keepidle;
#if (NGX_KEEPALIVE_FACTOR)
value *= NGX_KEEPALIVE_FACTOR;
#endif
if (setsockopt(ls[i].fd, IPPROTO_TCP, TCP_KEEPIDLE,
(const void *) &value, sizeof(int))
== -1)
{
ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
"setsockopt(TCP_KEEPIDLE, %d) %V failed, ignored",
value, &ls[i].addr_text);
}
}
if (ls[i].keepintvl) {
value = ls[i].keepintvl;
#if (NGX_KEEPALIVE_FACTOR)
value *= NGX_KEEPALIVE_FACTOR;
#endif
if (setsockopt(ls[i].fd, IPPROTO_TCP, TCP_KEEPINTVL,
(const void *) &value, sizeof(int))
== -1)
{
ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
"setsockopt(TCP_KEEPINTVL, %d) %V failed, ignored",
value, &ls[i].addr_text);
}
}
if (ls[i].keepcnt) {
if (setsockopt(ls[i].fd, IPPROTO_TCP, TCP_KEEPCNT,
(const void *) &ls[i].keepcnt, sizeof(int))
== -1)
{
ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
"setsockopt(TCP_KEEPCNT, %d) %V failed, ignored",
ls[i].keepcnt, &ls[i].addr_text);
}
}
#endif
#if (NGX_HAVE_SETFIB)
if (ls[i].setfib != -1) {
if (setsockopt(ls[i].fd, SOL_SOCKET, SO_SETFIB,
(const void *) &ls[i].setfib, sizeof(int))
== -1)
{
ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
"setsockopt(SO_SETFIB, %d) %V failed, ignored",
ls[i].setfib, &ls[i].addr_text);
}
}
#endif
#if (NGX_HAVE_TCP_FASTOPEN)
if (ls[i].fastopen != -1) {
if (setsockopt(ls[i].fd, IPPROTO_TCP, TCP_FASTOPEN,
(const void *) &ls[i].fastopen, sizeof(int))
== -1)
{
ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
"setsockopt(TCP_FASTOPEN, %d) %V failed, ignored",
ls[i].fastopen, &ls[i].addr_text);
}
}
#endif
#if 0
if (1) {
int tcp_nodelay = 1;
if (setsockopt(ls[i].fd, IPPROTO_TCP, TCP_NODELAY,
(const void *) &tcp_nodelay, sizeof(int))
== -1)
{
ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
"setsockopt(TCP_NODELAY) %V failed, ignored",
&ls[i].addr_text);
}
}
#endif
if (ls[i].listen) {
/* change backlog via listen() */
if (listen(ls[i].fd, ls[i].backlog) == -1) {
ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
"listen() to %V, backlog %d failed, ignored",
&ls[i].addr_text, ls[i].backlog);
}
}
/*
* setting deferred mode should be last operation on socket,
* because code may prematurely continue cycle on failure
*/
#if (NGX_HAVE_DEFERRED_ACCEPT)
#ifdef SO_ACCEPTFILTER
if (ls[i].delete_deferred) {
if (setsockopt(ls[i].fd, SOL_SOCKET, SO_ACCEPTFILTER, NULL, 0)
== -1)
{
ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
"setsockopt(SO_ACCEPTFILTER, NULL) "
"for %V failed, ignored",
&ls[i].addr_text);
if (ls[i].accept_filter) {
ngx_log_error(NGX_LOG_ALERT, cycle->log, 0,
"could not change the accept filter "
"to \"%s\" for %V, ignored",
ls[i].accept_filter, &ls[i].addr_text);
}
continue;
}
ls[i].deferred_accept = 0;
}
if (ls[i].add_deferred) {
ngx_memzero(&af, sizeof(struct accept_filter_arg));
(void) ngx_cpystrn((u_char *) af.af_name,
(u_char *) ls[i].accept_filter, 16);
if (setsockopt(ls[i].fd, SOL_SOCKET, SO_ACCEPTFILTER,
&af, sizeof(struct accept_filter_arg))
== -1)
{
ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
"setsockopt(SO_ACCEPTFILTER, \"%s\") "
"for %V failed, ignored",
ls[i].accept_filter, &ls[i].addr_text);
continue;
}
ls[i].deferred_accept = 1;
}
#endif
#ifdef TCP_DEFER_ACCEPT
if (ls[i].add_deferred || ls[i].delete_deferred) {
if (ls[i].add_deferred) {
/*
* There is no way to find out how long a connection was
* in queue (and a connection may bypass deferred queue at all
* if syncookies were used), hence we use 1 second timeout
* here.
*/
value = 1;
} else {
value = 0;
}
if (setsockopt(ls[i].fd, IPPROTO_TCP, TCP_DEFER_ACCEPT,
&value, sizeof(int))
== -1)
{
ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
"setsockopt(TCP_DEFER_ACCEPT, %d) for %V failed, "
"ignored",
value, &ls[i].addr_text);
continue;
}
}
if (ls[i].add_deferred) {
ls[i].deferred_accept = 1;
}
#endif
#endif /* NGX_HAVE_DEFERRED_ACCEPT */
}
return;
}
static ngx_int_t
ngx_http_scgi_process_header(ngx_http_request_t *r)
{
ngx_str_t *status_line;
ngx_int_t rc, status;
ngx_table_elt_t *h;
ngx_http_upstream_t *u;
ngx_http_upstream_header_t *hh;
ngx_http_upstream_main_conf_t *umcf;
umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module);
for ( ;; ) {
rc = ngx_http_parse_header_line(r, &r->upstream->buffer, 1);
if (rc == NGX_OK) {
/* a header line has been parsed successfully */
h = ngx_list_push(&r->upstream->headers_in.headers);
if (h == NULL) {
return NGX_ERROR;
}
h->hash = r->header_hash;
h->key.len = r->header_name_end - r->header_name_start;
h->value.len = r->header_end - r->header_start;
h->key.data = ngx_pnalloc(r->pool,
h->key.len + 1 + h->value.len + 1
+ h->key.len);
if (h->key.data == NULL) {
return NGX_ERROR;
}
h->value.data = h->key.data + h->key.len + 1;
h->lowcase_key = h->key.data + h->key.len + 1 + h->value.len + 1;
ngx_cpystrn(h->key.data, r->header_name_start, h->key.len + 1);
ngx_cpystrn(h->value.data, r->header_start, h->value.len + 1);
if (h->key.len == r->lowcase_index) {
ngx_memcpy(h->lowcase_key, r->lowcase_header, h->key.len);
} else {
ngx_strlow(h->lowcase_key, h->key.data, h->key.len);
}
hh = ngx_hash_find(&umcf->headers_in_hash, h->hash,
h->lowcase_key, h->key.len);
if (hh && hh->handler(r, h, hh->offset) != NGX_OK) {
return NGX_ERROR;
}
ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"http scgi header: \"%V: %V\"", &h->key, &h->value);
continue;
}
if (rc == NGX_HTTP_PARSE_HEADER_DONE) {
/* a whole header has been parsed successfully */
ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"http scgi header done");
if (r->http_version > NGX_HTTP_VERSION_9) {
return NGX_OK;
}
u = r->upstream;
if (u->headers_in.status) {
status_line = &u->headers_in.status->value;
status = ngx_atoi(status_line->data, 3);
if (status == NGX_ERROR) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"upstream sent invalid status \"%V\"",
status_line);
return NGX_HTTP_UPSTREAM_INVALID_HEADER;
}
r->http_version = NGX_HTTP_VERSION_10;
u->headers_in.status_n = status;
u->headers_in.status_line = *status_line;
} else if (u->headers_in.location) {
r->http_version = NGX_HTTP_VERSION_10;
u->headers_in.status_n = 302;
ngx_str_set(&u->headers_in.status_line,
"302 Moved Temporarily");
} else {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"upstream sent neither valid HTTP/1.0 header "
"nor \"Status\" header line");
u->headers_in.status_n = 200;
ngx_str_set(&u->headers_in.status_line, "200 OK");
}
if (u->state) {
u->state->status = u->headers_in.status_n;
}
return NGX_OK;
}
if (rc == NGX_AGAIN) {
return NGX_AGAIN;
}
/* there was error while a header line parsing */
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"upstream sent invalid header");
return NGX_HTTP_UPSTREAM_INVALID_HEADER;
}
}
void
ngx_configure_listening_sockets(ngx_cycle_t *cycle)
{
int keepalive;
ngx_uint_t i;
ngx_listening_t *ls;
#if (NGX_HAVE_DEFERRED_ACCEPT && defined SO_ACCEPTFILTER)
struct accept_filter_arg af;
#endif
#if (NGX_HAVE_DEFERRED_ACCEPT && defined TCP_DEFER_ACCEPT)
int timeout;
#endif
ls = cycle->listening.elts;
for (i = 0; i < cycle->listening.nelts; i++) {
ls[i].log = *ls[i].logp;
if (ls[i].rcvbuf != -1) {
if (setsockopt(ls[i].fd, SOL_SOCKET, SO_RCVBUF,
(const void *) &ls[i].rcvbuf, sizeof(int))
== -1)
{
ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
"setsockopt(SO_RCVBUF, %d) %V failed, ignored",
ls[i].rcvbuf, &ls[i].addr_text);
}
}
if (ls[i].sndbuf != -1) {
if (setsockopt(ls[i].fd, SOL_SOCKET, SO_SNDBUF,
(const void *) &ls[i].sndbuf, sizeof(int))
== -1)
{
ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
"setsockopt(SO_SNDBUF, %d) %V failed, ignored",
ls[i].sndbuf, &ls[i].addr_text);
}
}
if (ls[i].keepalive) {
keepalive = (ls[i].keepalive == 1) ? 1 : 0;
if (setsockopt(ls[i].fd, SOL_SOCKET, SO_KEEPALIVE,
(const void *) &keepalive, sizeof(int))
== -1)
{
ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
"setsockopt(SO_KEEPALIVE, %d) %V failed, ignored",
keepalive, &ls[i].addr_text);
}
}
#if (NGX_HAVE_KEEPALIVE_TUNABLE)
if (ls[i].keepidle) {
if (setsockopt(ls[i].fd, IPPROTO_TCP, TCP_KEEPIDLE,
(const void *) &ls[i].keepidle, sizeof(int))
== -1)
{
ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
"setsockopt(TCP_KEEPIDLE, %d) %V failed, ignored",
ls[i].keepidle, &ls[i].addr_text);
}
}
if (ls[i].keepintvl) {
if (setsockopt(ls[i].fd, IPPROTO_TCP, TCP_KEEPINTVL,
(const void *) &ls[i].keepintvl, sizeof(int))
== -1)
{
ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
"setsockopt(TCP_KEEPINTVL, %d) %V failed, ignored",
ls[i].keepintvl, &ls[i].addr_text);
}
}
if (ls[i].keepcnt) {
if (setsockopt(ls[i].fd, IPPROTO_TCP, TCP_KEEPCNT,
(const void *) &ls[i].keepcnt, sizeof(int))
== -1)
{
ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
"setsockopt(TCP_KEEPCNT, %d) %V failed, ignored",
ls[i].keepcnt, &ls[i].addr_text);
}
}
#endif
#if (NGX_HAVE_SETFIB)
if (ls[i].setfib != -1) {
if (setsockopt(ls[i].fd, SOL_SOCKET, SO_SETFIB,
(const void *) &ls[i].setfib, sizeof(int))
== -1)
{
ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
"setsockopt(SO_SETFIB, %d) %V failed, ignored",
ls[i].setfib, &ls[i].addr_text);
}
}
#endif
#if 0
if (1) {
int tcp_nodelay = 1;
if (setsockopt(ls[i].fd, IPPROTO_TCP, TCP_NODELAY,
(const void *) &tcp_nodelay, sizeof(int))
== -1)
{
ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
"setsockopt(TCP_NODELAY) %V failed, ignored",
&ls[i].addr_text);
}
}
#endif
if (ls[i].listen) {
/* change backlog via listen() */
if (listen(ls[i].fd, ls[i].backlog) == -1) {
ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
"listen() to %V, backlog %d failed, ignored",
&ls[i].addr_text, ls[i].backlog);
}
}
/*
* setting deferred mode should be last operation on socket,
* because code may prematurely continue cycle on failure
*/
#if (NGX_HAVE_DEFERRED_ACCEPT)
#ifdef SO_ACCEPTFILTER
if (ls[i].delete_deferred) {
if (setsockopt(ls[i].fd, SOL_SOCKET, SO_ACCEPTFILTER, NULL, 0)
== -1)
{
ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
"setsockopt(SO_ACCEPTFILTER, NULL) "
"for %V failed, ignored",
&ls[i].addr_text);
if (ls[i].accept_filter) {
ngx_log_error(NGX_LOG_ALERT, cycle->log, 0,
"could not change the accept filter "
"to \"%s\" for %V, ignored",
ls[i].accept_filter, &ls[i].addr_text);
}
continue;
}
ls[i].deferred_accept = 0;
}
if (ls[i].add_deferred) {
ngx_memzero(&af, sizeof(struct accept_filter_arg));
(void) ngx_cpystrn((u_char *) af.af_name,
(u_char *) ls[i].accept_filter, 16);
if (setsockopt(ls[i].fd, SOL_SOCKET, SO_ACCEPTFILTER,
&af, sizeof(struct accept_filter_arg))
== -1)
{
ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
"setsockopt(SO_ACCEPTFILTER, \"%s\") "
"for %V failed, ignored",
ls[i].accept_filter, &ls[i].addr_text);
continue;
}
ls[i].deferred_accept = 1;
}
#endif
#ifdef TCP_DEFER_ACCEPT
if (ls[i].add_deferred || ls[i].delete_deferred) {
if (ls[i].add_deferred) {
timeout = (int) (ls[i].post_accept_timeout / 1000);
} else {
timeout = 0;
}
if (setsockopt(ls[i].fd, IPPROTO_TCP, TCP_DEFER_ACCEPT,
&timeout, sizeof(int))
== -1)
{
ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
"setsockopt(TCP_DEFER_ACCEPT, %d) for %V failed, "
"ignored",
timeout, &ls[i].addr_text);
continue;
}
}
if (ls[i].add_deferred) {
ls[i].deferred_accept = 1;
}
#endif
#endif /* NGX_HAVE_DEFERRED_ACCEPT */
}
return;
}
static ngx_int_t
process_header(ngx_http_request_t *r)
{
ngx_int_t rc;
ngx_uint_t i;
ngx_table_elt_t *h;
ngx_http_upstream_header_t *hh;
ngx_http_upstream_main_conf_t *umcf;
umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module);
for ( ;; ) {
#if NGINX_VERSION_NUM >= 7000
rc = ngx_http_parse_header_line(r, &r->upstream->buffer, 1);
#else
rc = ngx_http_parse_header_line(r, &r->upstream->buffer);
#endif
if (rc == NGX_OK) {
/* a header line has been parsed successfully */
h = ngx_list_push(&r->upstream->headers_in.headers);
if (h == NULL) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
h->hash = r->header_hash;
h->key.len = r->header_name_end - r->header_name_start;
h->value.len = r->header_end - r->header_start;
h->key.data = ngx_palloc(r->pool,
h->key.len + 1 + h->value.len + 1 + h->key.len);
if (h->key.data == NULL) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
h->value.data = h->key.data + h->key.len + 1;
h->lowcase_key = h->key.data + h->key.len + 1 + h->value.len + 1;
ngx_cpystrn(h->key.data, r->header_name_start, h->key.len + 1);
ngx_cpystrn(h->value.data, r->header_start, h->value.len + 1);
if (h->key.len == r->lowcase_index) {
ngx_memcpy(h->lowcase_key, r->lowcase_header, h->key.len);
} else {
for (i = 0; i < h->key.len; i++) {
h->lowcase_key[i] = ngx_tolower(h->key.data[i]);
}
}
hh = ngx_hash_find(&umcf->headers_in_hash, h->hash,
h->lowcase_key, h->key.len);
if (hh && hh->handler(r, h, hh->offset) != NGX_OK) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"http scgi header: \"%V: %V\"",
&h->key, &h->value);
continue;
}
if (rc == NGX_HTTP_PARSE_HEADER_DONE) {
/* a whole header has been parsed successfully */
ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"http scgi header done");
/*
* if no "Server" and "Date" in header line,
* then add the default headers
*/
if (r->upstream->headers_in.server == NULL) {
h = ngx_list_push(&r->upstream->headers_in.headers);
if (h == NULL) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
h->hash = ngx_hash(ngx_hash(ngx_hash(ngx_hash(
ngx_hash('s', 'e'), 'r'), 'v'), 'e'), 'r');
h->key.len = sizeof("Server") - 1;
h->key.data = (u_char *) "Server";
h->value.data = (u_char *) (NGINX_VER " + Phusion Passenger " PASSENGER_VERSION " (mod_rails/mod_rack)");
h->value.len = ngx_strlen(h->value.data);
h->lowcase_key = (u_char *) "server";
}
if (r->upstream->headers_in.date == NULL) {
h = ngx_list_push(&r->upstream->headers_in.headers);
if (h == NULL) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
h->hash = ngx_hash(ngx_hash(ngx_hash('d', 'a'), 't'), 'e');
h->key.len = sizeof("Date") - 1;
h->key.data = (u_char *) "Date";
h->value.len = 0;
h->value.data = NULL;
h->lowcase_key = (u_char *) "date";
}
return NGX_OK;
}
if (rc == NGX_AGAIN) {
return NGX_AGAIN;
}
/* there was error while a header line parsing */
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"upstream sent invalid header");
return NGX_HTTP_UPSTREAM_INVALID_HEADER;
}
}
ngx_cycle_t *
ngx_init_cycle(ngx_cycle_t *old_cycle)
{
void *rv;
char **senv, **env;
ngx_uint_t i, n;
ngx_log_t *log;
ngx_time_t *tp;
ngx_conf_t conf;
ngx_pool_t *pool;
ngx_cycle_t *cycle, **old;
ngx_shm_zone_t *shm_zone, *oshm_zone;
ngx_list_part_t *part, *opart;
ngx_open_file_t *file;
ngx_listening_t *ls, *nls;
ngx_core_conf_t *ccf, *old_ccf;
ngx_core_module_t *module;
char hostname[NGX_MAXHOSTNAMELEN];
ngx_timezone_update();
/* force localtime update with a new timezone */
tp = ngx_timeofday();
tp->sec = 0; // 这会导致秒级时间流逝而强制更新所有时间数据
ngx_time_update();
log = old_cycle->log;
// 创建内存池，然后在内存池中创建cycle，再将该内存池挂到cycle上
pool = ngx_create_pool(NGX_CYCLE_POOL_SIZE, log);
if (pool == NULL) {
return NULL;
}
pool->log = log;
cycle = ngx_pcalloc(pool, sizeof(ngx_cycle_t));
if (cycle == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
cycle->pool = pool;
cycle->log = log;
cycle->new_log.log_level = NGX_LOG_ERR;
cycle->old_cycle = old_cycle;
// 配置前缀
cycle->conf_prefix.len = old_cycle->conf_prefix.len;
cycle->conf_prefix.data = ngx_pstrdup(pool, &old_cycle->conf_prefix);
if (cycle->conf_prefix.data == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
// 通用前缀
cycle->prefix.len = old_cycle->prefix.len;
cycle->prefix.data = ngx_pstrdup(pool, &old_cycle->prefix);
if (cycle->prefix.data == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
// 配置文件
cycle->conf_file.len = old_cycle->conf_file.len;
cycle->conf_file.data = ngx_pnalloc(pool, old_cycle->conf_file.len + 1);
if (cycle->conf_file.data == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
ngx_cpystrn(cycle->conf_file.data, old_cycle->conf_file.data,
old_cycle->conf_file.len + 1);
// 配置参数
cycle->conf_param.len = old_cycle->conf_param.len;
cycle->conf_param.data = ngx_pstrdup(pool, &old_cycle->conf_param);
if (cycle->conf_param.data == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
// 路径数组，每个元素是一个数组指针
n = old_cycle->pathes.nelts ? old_cycle->pathes.nelts : 10;
cycle->pathes.elts = ngx_pcalloc(pool, n * sizeof(ngx_path_t *));
if (cycle->pathes.elts == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
cycle->pathes.nelts = 0;
cycle->pathes.size = sizeof(ngx_path_t *);
cycle->pathes.nalloc = n;
cycle->pathes.pool = pool;
// 获取打开的文件数目
if (old_cycle->open_files.part.nelts) {
// 统计链表所有元素个数
n = old_cycle->open_files.part.nelts;
for (part = old_cycle->open_files.part.next; part; part = part->next) {
n += part->nelts;
}
} else {
n = 20;
}
// 初始化新打开的文件列表，ngx_open_file_t的结构很简单，只有
// fd, name，文件头尾指针及位置指针
if (ngx_list_init(&cycle->open_files, pool, n, sizeof(ngx_open_file_t))
!= NGX_OK)
{
ngx_destroy_pool(pool);
return NULL;
}
// 共享内存的初始化类似于上面打开文件的初始化
if (old_cycle->shared_memory.part.nelts) {
n = old_cycle->shared_memory.part.nelts;
for (part = old_cycle->shared_memory.part.next; part; part = part->next)
{
n += part->nelts;
}
} else {
n = 1;
}
if (ngx_list_init(&cycle->shared_memory, pool, n, sizeof(ngx_shm_zone_t))
!= NGX_OK)
{
ngx_destroy_pool(pool);
return NULL;
}
// 监听数组
n = old_cycle->listening.nelts ? old_cycle->listening.nelts : 10;
cycle->listening.elts = ngx_pcalloc(pool, n * sizeof(ngx_listening_t));
if (cycle->listening.elts == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
cycle->listening.nelts = 0;
cycle->listening.size = sizeof(ngx_listening_t);
cycle->listening.nalloc = n;
cycle->listening.pool = pool;
// 可重用连接队列
ngx_queue_init(&cycle->reusable_connections_queue);
// 创建模块配置数组列表，每个元素是一个指针，
// 指向保存了模块的配置对象的create_conf回调创建的配置
cycle->conf_ctx = ngx_pcalloc(pool, ngx_max_module * sizeof(void *));
if (cycle->conf_ctx == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
// 初始化主机名
if (gethostname(hostname, NGX_MAXHOSTNAMELEN) == -1) {
ngx_log_error(NGX_LOG_EMERG, log, ngx_errno, "gethostname() failed");
ngx_destroy_pool(pool);
return NULL;
}
/* on Linux gethostname() silently truncates name that does not fit */
hostname[NGX_MAXHOSTNAMELEN - 1] = '\0';
cycle->hostname.len = ngx_strlen(hostname);
cycle->hostname.data = ngx_pnalloc(pool, cycle->hostname.len);
if (cycle->hostname.data == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
ngx_strlow(cycle->hostname.data, (u_char *) hostname, cycle->hostname.len);
// 创建核心模块配置，通过调用模块的create_conf函数
for (i = 0; ngx_modules[i]; i++) {
if (ngx_modules[i]->type != NGX_CORE_MODULE) {
continue;
}
// 这个ctx是与模块类型相关的
// 比如NGX_CORE_MODULE类型的模块就是ngx_core_module_t类型
module = ngx_modules[i]->ctx;
// ngx_core_module_t的create_conf函数
// 它会创建一个ngx_core_conf_t类型的对象
if (module->create_conf) { // ngx_core_module_t的create_conf函数
rv = module->create_conf(cycle);
if (rv == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
// conf_ctx现在指向模块配置数组
// 对于核心模块来说，元素指针指向ngx_core_module_t.create_conf函
// 数创建的ngx_core_conf_t类型的对象，给之
// 后的ngx_core_module_t.init_conf函数初始化
cycle->conf_ctx[ngx_modules[i]->index] = rv;
}
}
senv = environ;
// 初始化conf
ngx_memzero(&conf, sizeof(ngx_conf_t));
/* STUB: init array ? */
// 配置命令字符串数组
conf.args = ngx_array_create(pool, 10, sizeof(ngx_str_t));
if (conf.args == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
conf.temp_pool = ngx_create_pool(NGX_CYCLE_POOL_SIZE, log);
if (conf.temp_pool == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
conf.ctx = cycle->conf_ctx; // 接管模块配置数组
conf.cycle = cycle;
conf.pool = pool; // 挂上cycle的内存池
conf.log = log;
conf.module_type = NGX_CORE_MODULE;
conf.cmd_type = NGX_MAIN_CONF; // 命令类型
#if 0
log->log_level = NGX_LOG_DEBUG_ALL;
#endif
// ngx_conf_param函数让ngx_conf_t类型的对象conf挂一个
// 临时的ngx_conf_file_t，再去调用ngx_conf_parse函数解
// 析用户指定的配置参数（cycle->conf_param），ngx_conf_parse函数
// 会以parse_param（还有parse_file和parse_block两种方式）方式执行解析循环
if (ngx_conf_param(&conf) != NGX_CONF_OK) {
environ = senv;
ngx_destroy_cycle_pools(&conf);
return NULL;
}
// 解析配置文件
if (ngx_conf_parse(&conf, &cycle->conf_file) != NGX_CONF_OK) {
environ = senv;
ngx_destroy_cycle_pools(&conf);
return NULL;
}
if (ngx_test_config && !ngx_quiet_mode) {
ngx_log_stderr(0, "the configuration file %s syntax is ok",
cycle->conf_file.data);
}
// 调用ngx_core_module_t的init_conf函数初始化
for (i = 0; ngx_modules[i]; i++) {
if (ngx_modules[i]->type != NGX_CORE_MODULE) {
continue;
}
module = ngx_modules[i]->ctx; // ngx_core_module_t
if (module->init_conf) {
if (module->init_conf(cycle, cycle->conf_ctx[ngx_modules[i]->index])
== NGX_CONF_ERROR)
{
environ = senv;
ngx_destroy_cycle_pools(&conf);
return NULL;
}
}
}
if (ngx_process == NGX_PROCESS_SIGNALLER) {
// 进程角色是信号发送者，比如nginx -s可以停止已有的nginx进程
return cycle;
}
// 就是cycle->conf_ctx[ngx_modules[i]->index]，ngx_core_conf_t类型
ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_core_module);
if (ngx_test_config) {
if (ngx_create_pidfile(&ccf->pid, log) != NGX_OK) {
goto failed;
}
} else if (!ngx_is_init_cycle(old_cycle)) {
/*
* we do not create the pid file in the first ngx_init_cycle() call
* because we need to write the demonized process pid
*/
old_ccf = (ngx_core_conf_t *) ngx_get_conf(old_cycle->conf_ctx,
ngx_core_module);
if (ccf->pid.len != old_ccf->pid.len
|| ngx_strcmp(ccf->pid.data, old_ccf->pid.data) != 0)
{
/* new pid file name */
if (ngx_create_pidfile(&ccf->pid, log) != NGX_OK) {
goto failed;
}
ngx_delete_pidfile(old_cycle);
}
}
// 测试锁文件
if (ngx_test_lockfile(cycle->lock_file.data, log) != NGX_OK) {
goto failed;
}
// 创建目录
if (ngx_create_pathes(cycle, ccf->user) != NGX_OK) {
goto failed;
}
// 创建新的日志文件
if (cycle->new_log.file == NULL) {
cycle->new_log.file = ngx_conf_open_file(cycle, &error_log);
if (cycle->new_log.file == NULL) {
goto failed;
}
}
/* open the new files */
part = &cycle->open_files.part;
file = part->elts;
for (i = 0; /* void */ ; i++) {
if (i >= part->nelts) {
if (part->next == NULL) {
break;
}
part = part->next;
file = part->elts;
i = 0;
}
if (file[i].name.len == 0) {
continue;
}
file[i].fd = ngx_open_file(file[i].name.data,
NGX_FILE_APPEND,
NGX_FILE_CREATE_OR_OPEN,
NGX_FILE_DEFAULT_ACCESS);
ngx_log_debug3(NGX_LOG_DEBUG_CORE, log, 0,
"log: %p %d \"%s\"",
&file[i], file[i].fd, file[i].name.data);
if (file[i].fd == NGX_INVALID_FILE) {
ngx_log_error(NGX_LOG_EMERG, log, ngx_errno,
ngx_open_file_n " \"%s\" failed",
file[i].name.data);
goto failed;
}
#if !(NGX_WIN32)
if (fcntl(file[i].fd, F_SETFD, FD_CLOEXEC) == -1) {
ngx_log_error(NGX_LOG_EMERG, log, ngx_errno,
"fcntl(FD_CLOEXEC) \"%s\" failed",
file[i].name.data);
goto failed;
}
#endif
}
cycle->log = &cycle->new_log;
pool->log = &cycle->new_log;
/* create shared memory */
part = &cycle->shared_memory.part;
shm_zone = part->elts;
for (i = 0; /* void */ ; i++) {
if (i >= part->nelts) {
if (part->next == NULL) {
break;
}
part = part->next;
shm_zone = part->elts;
i = 0;
}
if (shm_zone[i].shm.size == 0) {
ngx_log_error(NGX_LOG_EMERG, log, 0,
"zero size shared memory zone \"%V\"",
&shm_zone[i].shm.name);
goto failed;
}
shm_zone[i].shm.log = cycle->log;
opart = &old_cycle->shared_memory.part;
oshm_zone = opart->elts;
for (n = 0; /* void */ ; n++) {
if (n >= opart->nelts) {
if (opart->next == NULL) {
break;
}
opart = opart->next;
oshm_zone = opart->elts;
n = 0;
}
if (shm_zone[i].shm.name.len != oshm_zone[n].shm.name.len) {
continue;
}
if (ngx_strncmp(shm_zone[i].shm.name.data,
oshm_zone[n].shm.name.data,
shm_zone[i].shm.name.len)
!= 0)
{
continue;
}
if (shm_zone[i].shm.size == oshm_zone[n].shm.size) {
shm_zone[i].shm.addr = oshm_zone[n].shm.addr;
if (shm_zone[i].init(&shm_zone[i], oshm_zone[n].data)
!= NGX_OK)
{
goto failed;
}
goto shm_zone_found;
}
ngx_shm_free(&oshm_zone[n].shm);
break;
}
if (ngx_shm_alloc(&shm_zone[i].shm) != NGX_OK) {
goto failed;
}
if (ngx_init_zone_pool(cycle, &shm_zone[i]) != NGX_OK) {
goto failed;
}
if (shm_zone[i].init(&shm_zone[i], NULL) != NGX_OK) {
goto failed;
}
shm_zone_found:
continue;
}
/* handle the listening sockets */
if (old_cycle->listening.nelts) {
ls = old_cycle->listening.elts;
for (i = 0; i < old_cycle->listening.nelts; i++) {
ls[i].remain = 0;
}
nls = cycle->listening.elts;
for (n = 0; n < cycle->listening.nelts; n++) {
for (i = 0; i < old_cycle->listening.nelts; i++) {
if (ls[i].ignore) {
continue;
}
if (ngx_cmp_sockaddr(nls[n].sockaddr, ls[i].sockaddr) == NGX_OK)
{
nls[n].fd = ls[i].fd;
nls[n].previous = &ls[i];
ls[i].remain = 1;
if (ls[n].backlog != nls[i].backlog) {
nls[n].listen = 1;
}
#if (NGX_HAVE_DEFERRED_ACCEPT && defined SO_ACCEPTFILTER)
/*
* FreeBSD, except the most recent versions,
* could not remove accept filter
*/
nls[n].deferred_accept = ls[i].deferred_accept;
if (ls[i].accept_filter && nls[n].accept_filter) {
if (ngx_strcmp(ls[i].accept_filter,
nls[n].accept_filter)
!= 0)
{
nls[n].delete_deferred = 1;
nls[n].add_deferred = 1;
}
} else if (ls[i].accept_filter) {
nls[n].delete_deferred = 1;
} else if (nls[n].accept_filter) {
nls[n].add_deferred = 1;
}
#endif
#if (NGX_HAVE_DEFERRED_ACCEPT && defined TCP_DEFER_ACCEPT)
if (ls[n].deferred_accept && !nls[n].deferred_accept) {
nls[n].delete_deferred = 1;
} else if (ls[i].deferred_accept != nls[n].deferred_accept)
{
nls[n].add_deferred = 1;
}
#endif
break;
}
}
if (nls[n].fd == -1) {
nls[n].open = 1;
}
}
} else {
ls = cycle->listening.elts;
for (i = 0; i < cycle->listening.nelts; i++) {
ls[i].open = 1;
#if (NGX_HAVE_DEFERRED_ACCEPT && defined SO_ACCEPTFILTER)
if (ls[i].accept_filter) {
ls[i].add_deferred = 1;
}
#endif
#if (NGX_HAVE_DEFERRED_ACCEPT && defined TCP_DEFER_ACCEPT)
if (ls[i].deferred_accept) {
ls[i].add_deferred = 1;
}
#endif
}
}
if (ngx_open_listening_sockets(cycle) != NGX_OK) {
goto failed;
}
if (!ngx_test_config) {
ngx_configure_listening_sockets(cycle);
}
/* commit the new cycle configuration */
if (!ngx_use_stderr && cycle->log->file->fd != ngx_stderr) {
if (ngx_set_stderr(cycle->log->file->fd) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
ngx_set_stderr_n " failed");
}
}
pool->log = cycle->log;
for (i = 0; ngx_modules[i]; i++) {
if (ngx_modules[i]->init_module) {
if (ngx_modules[i]->init_module(cycle) != NGX_OK) {
/* fatal */
exit(1);
}
}
}
/* close and delete stuff that lefts from an old cycle */
/* free the unnecessary shared memory */
opart = &old_cycle->shared_memory.part;
oshm_zone = opart->elts;
for (i = 0; /* void */ ; i++) {
if (i >= opart->nelts) {
if (opart->next == NULL) {
goto old_shm_zone_done;
}
opart = opart->next;
oshm_zone = opart->elts;
i = 0;
}
part = &cycle->shared_memory.part;
shm_zone = part->elts;
for (n = 0; /* void */ ; n++) {
if (n >= part->nelts) {
if (part->next == NULL) {
break;
}
part = part->next;
shm_zone = part->elts;
n = 0;
}
if (oshm_zone[i].shm.name.len == shm_zone[n].shm.name.len
&& ngx_strncmp(oshm_zone[i].shm.name.data,
shm_zone[n].shm.name.data,
oshm_zone[i].shm.name.len)
== 0)
{
goto live_shm_zone;
}
}
ngx_shm_free(&oshm_zone[i].shm);
live_shm_zone:
continue;
}
old_shm_zone_done:
/* close the unnecessary listening sockets */
ls = old_cycle->listening.elts;
for (i = 0; i < old_cycle->listening.nelts; i++) {
if (ls[i].remain || ls[i].fd == -1) {
continue;
}
if (ngx_close_socket(ls[i].fd) == -1) {
ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
ngx_close_socket_n " listening socket on %V failed",
&ls[i].addr_text);
}
#if (NGX_HAVE_UNIX_DOMAIN)
if (ls[i].sockaddr->sa_family == AF_UNIX) {
u_char *name;
name = ls[i].addr_text.data + sizeof("unix:") - 1;
ngx_log_error(NGX_LOG_WARN, cycle->log, 0,
"deleting socket %s", name);
if (ngx_delete_file(name) == -1) {
ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_socket_errno,
ngx_delete_file_n " %s failed", name);
}
}
#endif
}
/* close the unnecessary open files */
part = &old_cycle->open_files.part;
file = part->elts;
for (i = 0; /* void */ ; i++) {
if (i >= part->nelts) {
if (part->next == NULL) {
break;
}
part = part->next;
file = part->elts;
i = 0;
}
if (file[i].fd == NGX_INVALID_FILE || file[i].fd == ngx_stderr) {
continue;
}
if (ngx_close_file(file[i].fd) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_EMERG, log, ngx_errno,
ngx_close_file_n " \"%s\" failed",
file[i].name.data);
}
}
ngx_destroy_pool(conf.temp_pool);
if (ngx_process == NGX_PROCESS_MASTER || ngx_is_init_cycle(old_cycle)) {
/*
* perl_destruct() frees environ, if it is not the same as it was at
* perl_construct() time, therefore we save the previous cycle
* environment before ngx_conf_parse() where it will be changed.
*/
env = environ;
environ = senv;
ngx_destroy_pool(old_cycle->pool);
cycle->old_cycle = NULL;
environ = env;
return cycle;
}
if (ngx_temp_pool == NULL) {
ngx_temp_pool = ngx_create_pool(128, cycle->log);
if (ngx_temp_pool == NULL) {
ngx_log_error(NGX_LOG_EMERG, cycle->log, 0,
"could not create ngx_temp_pool");
exit(1);
}
n = 10;
ngx_old_cycles.elts = ngx_pcalloc(ngx_temp_pool,
n * sizeof(ngx_cycle_t *));
if (ngx_old_cycles.elts == NULL) {
exit(1);
}
ngx_old_cycles.nelts = 0;
ngx_old_cycles.size = sizeof(ngx_cycle_t *);
ngx_old_cycles.nalloc = n;
ngx_old_cycles.pool = ngx_temp_pool;
ngx_cleaner_event.handler = ngx_clean_old_cycles;
ngx_cleaner_event.log = cycle->log;
ngx_cleaner_event.data = &dumb;
dumb.fd = (ngx_socket_t) -1;
}
ngx_temp_pool->log = cycle->log;
old = ngx_array_push(&ngx_old_cycles);
if (old == NULL) {
exit(1);
}
*old = old_cycle;
if (!ngx_cleaner_event.timer_set) {
ngx_add_timer(&ngx_cleaner_event, 30000);
ngx_cleaner_event.timer_set = 1;
}
return cycle;
failed:
if (!ngx_is_init_cycle(old_cycle)) {
old_ccf = (ngx_core_conf_t *) ngx_get_conf(old_cycle->conf_ctx,
ngx_core_module);
if (old_ccf->environment) {
environ = old_ccf->environment;
}
}
/* rollback the new cycle configuration */
part = &cycle->open_files.part;
file = part->elts;
for (i = 0; /* void */ ; i++) {
if (i >= part->nelts) {
if (part->next == NULL) {
break;
}
part = part->next;
file = part->elts;
i = 0;
}
if (file[i].fd == NGX_INVALID_FILE || file[i].fd == ngx_stderr) {
continue;
}
if (ngx_close_file(file[i].fd) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_EMERG, log, ngx_errno,
ngx_close_file_n " \"%s\" failed",
file[i].name.data);
}
}
if (ngx_test_config) {
ngx_destroy_cycle_pools(&conf);
return NULL;
}
ls = cycle->listening.elts;
for (i = 0; i < cycle->listening.nelts; i++) {
if (ls[i].fd == -1 || !ls[i].open) {
continue;
}
if (ngx_close_socket(ls[i].fd) == -1) {
ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
ngx_close_socket_n " %V failed",
&ls[i].addr_text);
}
}
ngx_destroy_cycle_pools(&conf);
return NULL;
}
static ngx_int_t
ngx_http_dav_copy_dir_time(ngx_tree_ctx_t *ctx, ngx_str_t *path)
{
u_char *p, *dir;
size_t len;
ngx_http_dav_copy_ctx_t *copy;
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, ctx->log, 0,
"http copy dir time: \"%s\"", path->data);
copy = ctx->data;
len = copy->path.len + path->len;
dir = ngx_alloc(len + 1, ctx->log);
if (dir == NULL) {
return NGX_ABORT;
}
p = ngx_cpymem(dir, copy->path.data, copy->path.len);
(void) ngx_cpystrn(p, path->data + copy->len, path->len - copy->len + 1);
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, ctx->log, 0,
"http copy dir time to: \"%s\"", dir);
#if (NGX_WIN32)
{
ngx_fd_t fd;
fd = ngx_open_file(dir, NGX_FILE_RDWR, NGX_FILE_OPEN, 0);
if (fd == NGX_INVALID_FILE) {
(void) ngx_http_dav_error(ctx->log, ngx_errno, 0, ngx_open_file_n, dir);
goto failed;
}
if (ngx_set_file_time(NULL, fd, ctx->mtime) != NGX_OK) {
ngx_log_error(NGX_LOG_ALERT, ctx->log, ngx_errno,
ngx_set_file_time_n " \"%s\" failed", dir);
}
if (ngx_close_file(fd) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_ALERT, ctx->log, ngx_errno,
ngx_close_file_n " \"%s\" failed", dir);
}
}
failed:
#else
if (ngx_set_file_time(dir, 0, ctx->mtime) != NGX_OK) {
ngx_log_error(NGX_LOG_ALERT, ctx->log, ngx_errno,
ngx_set_file_time_n " \"%s\" failed", dir);
}
#endif
ngx_free(dir);
return NGX_OK;
}
ngx_log_t *
ngx_log_init(u_char *prefix)
{
u_char *p, *name;
size_t nlen, plen;
ngx_log.file = &ngx_log_file;
ngx_log.log_level = NGX_LOG_NOTICE;
name = (u_char *) NGX_ERROR_LOG_PATH;
/*
* we use ngx_strlen() here since BCC warns about
* condition is always false and unreachable code
*/
nlen = ngx_strlen(name);
if (nlen == 0) {
ngx_log_file.fd = ngx_stderr;
return &ngx_log;
}
p = NULL;
#if (NGX_WIN32)
if (name[1] != ':') {
#else
if (name[0] != '/') {
#endif
if (prefix) {
plen = ngx_strlen(prefix);
} else {
#ifdef NGX_PREFIX
prefix = (u_char *) NGX_PREFIX;
plen = ngx_strlen(prefix);
#else
plen = 0;
#endif
}
if (plen) {
name = malloc(plen + nlen + 2);
if (name == NULL) {
return NULL;
}
p = ngx_cpymem(name, prefix, plen);
if (!ngx_path_separator(*(p - 1))) {
*p++ = '/';
}
ngx_cpystrn(p, (u_char *) NGX_ERROR_LOG_PATH, nlen + 1);
p = name;
}
}
ngx_log_file.fd = ngx_open_file(name, NGX_FILE_APPEND,
NGX_FILE_CREATE_OR_OPEN,
NGX_FILE_DEFAULT_ACCESS);
if (ngx_log_file.fd == NGX_INVALID_FILE) {
ngx_log_stderr(ngx_errno,
"[alert]: could not open error log file: "
ngx_open_file_n " \"%s\" failed", name);
#if (NGX_WIN32)
ngx_event_log(ngx_errno,
"could not open error log file: "
ngx_open_file_n " \"%s\" failed", name);
#endif
ngx_log_file.fd = ngx_stderr;
}
if (p) {
ngx_free(p);
}
return &ngx_log;
}
ngx_log_t *
ngx_log_create(ngx_cycle_t *cycle, ngx_str_t *name)
{
ngx_log_t *log;
log = ngx_pcalloc(cycle->pool, sizeof(ngx_log_t));
if (log == NULL) {
return NULL;
}
log->file = ngx_conf_open_file(cycle, name);
if (log->file == NULL) {
return NULL;
}
return log;
}
ngx_int_t
ngx_hash_add_key(ngx_hash_keys_arrays_t *ha, ngx_str_t *key, void *value,
ngx_uint_t flags)
{
size_t len;
u_char *p;
ngx_str_t *name;
ngx_uint_t i, k, n, skip, last;
ngx_array_t *keys, *hwc;
ngx_hash_key_t *hk;
last = key->len;
if (flags & NGX_HASH_WILDCARD_KEY) {
/*
* supported wildcards:
* "*.example.com", ".example.com", and "www.example.*"
*/
n = 0;
for (i = 0; i < key->len; i++) {
if (key->data[i] == '*') {
if (++n > 1) {
return NGX_DECLINED;
}
}
if (key->data[i] == '.' && key->data[i + 1] == '.') {
return NGX_DECLINED;
}
if (key->data[i] == '\0') {
return NGX_DECLINED;
}
}
if (key->len > 1 && key->data[0] == '.') {
skip = 1;
goto wildcard;
}
if (key->len > 2) {
if (key->data[0] == '*' && key->data[1] == '.') {
skip = 2;
goto wildcard;
}
if (key->data[i - 2] == '.' && key->data[i - 1] == '*') {
skip = 0;
last -= 2;
goto wildcard;
}
}
if (n) {
return NGX_DECLINED;
}
}
/* exact hash */
k = 0;
for (i = 0; i < last; i++) {
if (!(flags & NGX_HASH_READONLY_KEY)) {
key->data[i] = ngx_tolower(key->data[i]);
}
k = ngx_hash(k, key->data[i]);
}
k %= ha->hsize;
/* check conflicts in exact hash */
name = ha->keys_hash[k].elts;
if (name) {
for (i = 0; i < ha->keys_hash[k].nelts; i++) {
if (last != name[i].len) {
continue;
}
if (ngx_strncmp(key->data, name[i].data, last) == 0) {
return NGX_BUSY;
}
}
} else {
if (ngx_array_init(&ha->keys_hash[k], ha->temp_pool, 4,
sizeof(ngx_str_t))
!= NGX_OK)
{
return NGX_ERROR;
}
}
name = ngx_array_push(&ha->keys_hash[k]);
if (name == NULL) {
return NGX_ERROR;
}
*name = *key;
hk = ngx_array_push(&ha->keys);
if (hk == NULL) {
return NGX_ERROR;
}
hk->key = *key;
hk->key_hash = ngx_hash_key(key->data, last);
hk->value = value;
return NGX_OK;
wildcard:
/* wildcard hash */
k = ngx_hash_strlow(&key->data[skip], &key->data[skip], last - skip);
k %= ha->hsize;
if (skip == 1) {
/* check conflicts in exact hash for ".example.com" */
name = ha->keys_hash[k].elts;
if (name) {
len = last - skip;
for (i = 0; i < ha->keys_hash[k].nelts; i++) {
if (len != name[i].len) {
continue;
}
if (ngx_strncmp(&key->data[1], name[i].data, len) == 0) {
return NGX_BUSY;
}
}
} else {
if (ngx_array_init(&ha->keys_hash[k], ha->temp_pool, 4,
sizeof(ngx_str_t))
!= NGX_OK)
{
return NGX_ERROR;
}
}
name = ngx_array_push(&ha->keys_hash[k]);
if (name == NULL) {
return NGX_ERROR;
}
name->len = last - 1;
name->data = ngx_pnalloc(ha->temp_pool, name->len);
if (name->data == NULL) {
return NGX_ERROR;
}
ngx_memcpy(name->data, &key->data[1], name->len);
}
if (skip) {
/*
* convert "*.example.com" to "com.example.\0"
* and ".example.com" to "com.example\0"
*/
p = ngx_pnalloc(ha->temp_pool, last);
if (p == NULL) {
return NGX_ERROR;
}
len = 0;
n = 0;
for (i = last - 1; i; i--) {
if (key->data[i] == '.') {
ngx_memcpy(&p[n], &key->data[i + 1], len);
n += len;
p[n++] = '.';
len = 0;
continue;
}
len++;
}
if (len) {
ngx_memcpy(&p[n], &key->data[1], len);
n += len;
}
p[n] = '\0';
hwc = &ha->dns_wc_head;
keys = &ha->dns_wc_head_hash[k];
} else {
/* convert "www.example.*" to "www.example\0" */
last++;
p = ngx_pnalloc(ha->temp_pool, last);
if (p == NULL) {
return NGX_ERROR;
}
ngx_cpystrn(p, key->data, last);
hwc = &ha->dns_wc_tail;
keys = &ha->dns_wc_tail_hash[k];
}
/* check conflicts in wildcard hash */
name = keys->elts;
if (name) {
len = last - skip;
for (i = 0; i < keys->nelts; i++) {
if (len != name[i].len) {
continue;
}
if (ngx_strncmp(key->data + skip, name[i].data, len) == 0) {
return NGX_BUSY;
}
}
} else {
if (ngx_array_init(keys, ha->temp_pool, 4, sizeof(ngx_str_t)) != NGX_OK)
{
return NGX_ERROR;
}
}
name = ngx_array_push(keys);
if (name == NULL) {
return NGX_ERROR;
}
name->len = last - skip;
name->data = ngx_pnalloc(ha->temp_pool, name->len);
if (name->data == NULL) {
return NGX_ERROR;
}
ngx_memcpy(name->data, key->data + skip, name->len);
/* add to wildcard hash */
hk = ngx_array_push(hwc);
if (hk == NULL) {
return NGX_ERROR;
}
hk->key.len = last - 1;
hk->key.data = p;
hk->key_hash = 0;
hk->value = value;
return NGX_OK;
}
static ngx_int_t
ngx_http_autoindex_handler(ngx_http_request_t *r)
{
u_char *last, *filename, scale;
off_t length;
size_t len, utf_len, allocated, root;
ngx_tm_t tm;
ngx_err_t err;
ngx_buf_t *b;
ngx_int_t rc, size;
ngx_str_t path;
ngx_dir_t dir;
ngx_uint_t i, level, utf8;
ngx_pool_t *pool;
ngx_time_t *tp;
ngx_chain_t out;
ngx_array_t entries;
ngx_http_autoindex_entry_t *entry;
ngx_http_autoindex_loc_conf_t *alcf;
static char *months[] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun",
"Jul", "Aug", "Sep", "Oct", "Nov", "Dec" };
if (r->uri.data[r->uri.len - 1] != '/') {
return NGX_DECLINED;
}
if (!(r->method & (NGX_HTTP_GET|NGX_HTTP_HEAD))) {
return NGX_DECLINED;
}
alcf = ngx_http_get_module_loc_conf(r, ngx_http_autoindex_module);
if (!alcf->enable) {
return NGX_DECLINED;
}
/* NGX_DIR_MASK_LEN is lesser than NGX_HTTP_AUTOINDEX_PREALLOCATE */
last = ngx_http_map_uri_to_path(r, &path, &root,
NGX_HTTP_AUTOINDEX_PREALLOCATE);
if (last == NULL) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
allocated = path.len;
path.len = last - path.data;
if (path.len > 1) {
path.len--;
}
path.data[path.len] = '\0';
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"http autoindex: \"%s\"", path.data);
if (ngx_open_dir(&path, &dir) == NGX_ERROR) {
err = ngx_errno;
if (err == NGX_ENOENT
|| err == NGX_ENOTDIR
|| err == NGX_ENAMETOOLONG)
{
level = NGX_LOG_ERR;
rc = NGX_HTTP_NOT_FOUND;
} else if (err == NGX_EACCES) {
level = NGX_LOG_ERR;
rc = NGX_HTTP_FORBIDDEN;
} else {
level = NGX_LOG_CRIT;
rc = NGX_HTTP_INTERNAL_SERVER_ERROR;
}
ngx_log_error(level, r->connection->log, err,
ngx_open_dir_n " \"%s\" failed", path.data);
return rc;
}
#if (NGX_SUPPRESS_WARN)
/* MSVC thinks 'entries' may be used without having been initialized */
ngx_memzero(&entries, sizeof(ngx_array_t));
#endif
/* TODO: pool should be temporary pool */
pool = r->pool;
if (ngx_array_init(&entries, pool, 40, sizeof(ngx_http_autoindex_entry_t))
!= NGX_OK)
{
return ngx_http_autoindex_error(r, &dir, &path);
}
r->headers_out.status = NGX_HTTP_OK;
r->headers_out.content_type_len = sizeof("text/html") - 1;
ngx_str_set(&r->headers_out.content_type, "text/html");
rc = ngx_http_send_header(r);
if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) {
if (ngx_close_dir(&dir) == NGX_ERROR) {
ngx_log_error(NGX_LOG_ALERT, r->connection->log, ngx_errno,
ngx_close_dir_n " \"%V\" failed", &path);
}
return rc;
}
filename = path.data;
filename[path.len] = '/';
if (r->headers_out.charset.len == 5
&& ngx_strncasecmp(r->headers_out.charset.data, (u_char *) "utf-8", 5)
== 0)
{
utf8 = 1;
} else {
utf8 = 0;
}
for ( ;; ) {
ngx_set_errno(0);
if (ngx_read_dir(&dir) == NGX_ERROR) {
err = ngx_errno;
if (err != NGX_ENOMOREFILES) {
ngx_log_error(NGX_LOG_CRIT, r->connection->log, err,
ngx_read_dir_n " \"%V\" failed", &path);
return ngx_http_autoindex_error(r, &dir, &path);
}
break;
}
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"http autoindex file: \"%s\"", ngx_de_name(&dir));
len = ngx_de_namelen(&dir);
if (ngx_de_name(&dir)[0] == '.') {
continue;
}
if (!dir.valid_info) {
/* 1 byte for '/' and 1 byte for terminating '\0' */
if (path.len + 1 + len + 1 > allocated) {
allocated = path.len + 1 + len + 1
+ NGX_HTTP_AUTOINDEX_PREALLOCATE;
filename = ngx_pnalloc(pool, allocated);
if (filename == NULL) {
return ngx_http_autoindex_error(r, &dir, &path);
}
last = ngx_cpystrn(filename, path.data, path.len + 1);
*last++ = '/';
}
ngx_cpystrn(last, ngx_de_name(&dir), len + 1);
if (ngx_de_info(filename, &dir) == NGX_FILE_ERROR) {
err = ngx_errno;
if (err != NGX_ENOENT) {
ngx_log_error(NGX_LOG_CRIT, r->connection->log, err,
ngx_de_info_n " \"%s\" failed", filename);
if (err == NGX_EACCES) {
continue;
}
return ngx_http_autoindex_error(r, &dir, &path);
}
if (ngx_de_link_info(filename, &dir) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_CRIT, r->connection->log, ngx_errno,
ngx_de_link_info_n " \"%s\" failed",
filename);
return ngx_http_autoindex_error(r, &dir, &path);
}
}
}
entry = ngx_array_push(&entries);
if (entry == NULL) {
return ngx_http_autoindex_error(r, &dir, &path);
}
entry->name.len = len;
entry->name.data = ngx_pnalloc(pool, len + 1);
if (entry->name.data == NULL) {
return ngx_http_autoindex_error(r, &dir, &path);
}
ngx_cpystrn(entry->name.data, ngx_de_name(&dir), len + 1);
entry->escape = 2 * ngx_escape_uri(NULL, ngx_de_name(&dir), len,
NGX_ESCAPE_HTML);
if (utf8) {
entry->utf_len = ngx_utf8_length(entry->name.data, entry->name.len);
} else {
entry->utf_len = len;
}
entry->colon = (ngx_strchr(entry->name.data, ':') != NULL);
entry->dir = ngx_de_is_dir(&dir);
entry->mtime = ngx_de_mtime(&dir);
entry->size = ngx_de_size(&dir);
}
if (ngx_close_dir(&dir) == NGX_ERROR) {
ngx_log_error(NGX_LOG_ALERT, r->connection->log, ngx_errno,
ngx_close_dir_n " \"%s\" failed", &path);
}
len = sizeof(title) - 1
+ r->uri.len
+ sizeof(header) - 1
+ r->uri.len
+ sizeof("</h1>") - 1
+ sizeof("<hr><pre><a href=\"../\">../</a>" CRLF) - 1
+ sizeof("</pre><hr>") - 1
+ sizeof(tail) - 1;
entry = entries.elts;
for (i = 0; i < entries.nelts; i++) {
len += sizeof("<a href=\"") - 1
+ entry[i].name.len + entry[i].escape
+ 1 /* 1 is for "/" */
+ sizeof("\">") - 1
+ entry[i].name.len - entry[i].utf_len + entry[i].colon * 2
+ NGX_HTTP_AUTOINDEX_NAME_LEN + sizeof(">") - 2
+ sizeof("</a>") - 1
+ sizeof(" 28-Sep-1970 12:00 ") - 1
+ 20 /* the file size */
+ 2;
}
b = ngx_create_temp_buf(r->pool, len);
if (b == NULL) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
if (entries.nelts > 1) {
ngx_qsort(entry, (size_t) entries.nelts,
sizeof(ngx_http_autoindex_entry_t),
ngx_http_autoindex_cmp_entries);
}
b->last = ngx_cpymem(b->last, title, sizeof(title) - 1);
b->last = ngx_cpymem(b->last, r->uri.data, r->uri.len);
b->last = ngx_cpymem(b->last, header, sizeof(header) - 1);
b->last = ngx_cpymem(b->last, r->uri.data, r->uri.len);
b->last = ngx_cpymem(b->last, "</h1>", sizeof("</h1>") - 1);
b->last = ngx_cpymem(b->last, "<hr><pre><a href=\"../\">../</a>" CRLF,
sizeof("<hr><pre><a href=\"../\">../</a>" CRLF) - 1);
tp = ngx_timeofday();
for (i = 0; i < entries.nelts; i++) {
b->last = ngx_cpymem(b->last, "<a href=\"", sizeof("<a href=\"") - 1);
if (entry[i].colon) {
*b->last++ = '.';
*b->last++ = '/';
}
if (entry[i].escape) {
ngx_escape_uri(b->last, entry[i].name.data, entry[i].name.len,
NGX_ESCAPE_HTML);
b->last += entry[i].name.len + entry[i].escape;
} else {
b->last = ngx_cpymem(b->last, entry[i].name.data,
entry[i].name.len);
}
if (entry[i].dir) {
*b->last++ = '/';
}
*b->last++ = '"';
*b->last++ = '>';
len = entry[i].utf_len;
if (entry[i].name.len != len) {
if (len > NGX_HTTP_AUTOINDEX_NAME_LEN) {
utf_len = NGX_HTTP_AUTOINDEX_NAME_LEN - 3 + 1;
} else {
utf_len = NGX_HTTP_AUTOINDEX_NAME_LEN + 1;
}
b->last = ngx_utf8_cpystrn(b->last, entry[i].name.data,
utf_len, entry[i].name.len + 1);
last = b->last;
} else {
b->last = ngx_cpystrn(b->last, entry[i].name.data,
NGX_HTTP_AUTOINDEX_NAME_LEN + 1);
last = b->last - 3;
}
if (len > NGX_HTTP_AUTOINDEX_NAME_LEN) {
b->last = ngx_cpymem(last, "..></a>", sizeof("..></a>") - 1);
} else {
if (entry[i].dir && NGX_HTTP_AUTOINDEX_NAME_LEN - len > 0) {
*b->last++ = '/';
len++;
}
b->last = ngx_cpymem(b->last, "</a>", sizeof("</a>") - 1);
ngx_memset(b->last, ' ', NGX_HTTP_AUTOINDEX_NAME_LEN - len);
b->last += NGX_HTTP_AUTOINDEX_NAME_LEN - len;
}
*b->last++ = ' ';
ngx_gmtime(entry[i].mtime + tp->gmtoff * 60 * alcf->localtime, &tm);
b->last = ngx_sprintf(b->last, "%02d-%s-%d %02d:%02d ",
tm.ngx_tm_mday,
months[tm.ngx_tm_mon - 1],
tm.ngx_tm_year,
tm.ngx_tm_hour,
tm.ngx_tm_min);
if (alcf->exact_size) {
if (entry[i].dir) {
b->last = ngx_cpymem(b->last, " -",
sizeof(" -") - 1);
} else {
b->last = ngx_sprintf(b->last, "%19O", entry[i].size);
}
} else {
if (entry[i].dir) {
b->last = ngx_cpymem(b->last, " -",
sizeof(" -") - 1);
} else {
length = entry[i].size;
if (length > 1024 * 1024 * 1024 - 1) {
size = (ngx_int_t) (length / (1024 * 1024 * 1024));
if ((length % (1024 * 1024 * 1024))
> (1024 * 1024 * 1024 / 2 - 1))
{
size++;
}
scale = 'G';
} else if (length > 1024 * 1024 - 1) {
size = (ngx_int_t) (length / (1024 * 1024));
if ((length % (1024 * 1024)) > (1024 * 1024 / 2 - 1)) {
size++;
}
scale = 'M';
} else if (length > 9999) {
size = (ngx_int_t) (length / 1024);
if (length % 1024 > 511) {
size++;
}
scale = 'K';
} else {
size = (ngx_int_t) length;
scale = '\0';
}
if (scale) {
b->last = ngx_sprintf(b->last, "%6i%c", size, scale);
} else {
b->last = ngx_sprintf(b->last, " %6i", size);
}
}
}
*b->last++ = CR;
*b->last++ = LF;
}
/* TODO: free temporary pool */
b->last = ngx_cpymem(b->last, "</pre><hr>", sizeof("</pre><hr>") - 1);
b->last = ngx_cpymem(b->last, tail, sizeof(tail) - 1);
if (r == r->main) {
b->last_buf = 1;
}
b->last_in_chain = 1;
out.buf = b;
out.next = NULL;
return ngx_http_output_filter(r, &out);
}
void
ngx_master_process_cycle(ngx_cycle_t *cycle)
{
char *title;
u_char *p;
size_t size;
ngx_int_t i;
ngx_uint_t n, sigio;
sigset_t set;
struct itimerval itv;
ngx_uint_t live;
ngx_msec_t delay;
ngx_listening_t *ls;
ngx_core_conf_t *ccf;
sigemptyset(&set);
sigaddset(&set, SIGCHLD);
sigaddset(&set, SIGALRM);
sigaddset(&set, SIGIO);
sigaddset(&set, SIGINT);
sigaddset(&set, ngx_signal_value(NGX_RECONFIGURE_SIGNAL));
sigaddset(&set, ngx_signal_value(NGX_REOPEN_SIGNAL));
sigaddset(&set, ngx_signal_value(NGX_NOACCEPT_SIGNAL));
sigaddset(&set, ngx_signal_value(NGX_TERMINATE_SIGNAL));
sigaddset(&set, ngx_signal_value(NGX_SHUTDOWN_SIGNAL));
sigaddset(&set, ngx_signal_value(NGX_CHANGEBIN_SIGNAL));
if (sigprocmask(SIG_BLOCK, &set, NULL) == -1) {
ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
"sigprocmask() failed");
}
sigemptyset(&set);
size = sizeof(master_process);
for (i = 0; i < ngx_argc; i++) {
size += ngx_strlen(ngx_argv[i]) + 1;
}
title = ngx_pnalloc(cycle->pool, size);
p = ngx_cpymem(title, master_process, sizeof(master_process) - 1);
for (i = 0; i < ngx_argc; i++) {
*p++ = ' ';
p = ngx_cpystrn(p, (u_char *) ngx_argv[i], size);
}
ngx_setproctitle(title);
ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_core_module);
ngx_start_worker_processes(cycle, ccf->worker_processes,
NGX_PROCESS_RESPAWN);
ngx_start_cache_manager_processes(cycle, 0);
ngx_start_session_manager_processes(cycle, 0);
ngx_start_ip_blacklist_manager_processes(cycle, 0);
ngx_new_binary = 0;
delay = 0;
sigio = 0;
live = 1;
for ( ;; ) {
if (delay) {
if (ngx_sigalrm) {
sigio = 0;
delay *= 2;
ngx_sigalrm = 0;
}
ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
"termination cycle: %d", delay);
itv.it_interval.tv_sec = 0;
itv.it_interval.tv_usec = 0;
itv.it_value.tv_sec = delay / 1000;
itv.it_value.tv_usec = (delay % 1000 ) * 1000;
if (setitimer(ITIMER_REAL, &itv, NULL) == -1) {
ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
"setitimer() failed");
}
}
ngx_log_debug0(NGX_LOG_DEBUG_EVENT, cycle->log, 0, "sigsuspend");
sigsuspend(&set);
ngx_time_update();
ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
"wake up, sigio %i", sigio);
if (ngx_reap) {
ngx_reap = 0;
ngx_log_debug0(NGX_LOG_DEBUG_EVENT, cycle->log, 0, "reap children");
live = ngx_reap_children(cycle);
}
if (!live && (ngx_terminate || ngx_quit)) {
ngx_master_process_exit(cycle);
}
if (ngx_terminate) {
if (delay == 0) {
delay = 50;
}
if (sigio) {
sigio--;
continue;
}
sigio = ccf->worker_processes + 2 /* cache processes */;
if (delay > 1000) {
ngx_signal_worker_processes(cycle, SIGKILL);
} else {
ngx_signal_worker_processes(cycle,
ngx_signal_value(NGX_TERMINATE_SIGNAL));
}
continue;
}
if (ngx_quit) {
ngx_signal_worker_processes(cycle,
ngx_signal_value(NGX_SHUTDOWN_SIGNAL));
ls = cycle->listening.elts;
for (n = 0; n < cycle->listening.nelts; n++) {
if (ngx_close_socket(ls[n].fd) == -1) {
ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_socket_errno,
ngx_close_socket_n " %V failed",
&ls[n].addr_text);
}
}
cycle->listening.nelts = 0;
continue;
}
if (ngx_reconfigure) {
ngx_reconfigure = 0;
if (ngx_new_binary) {
ngx_start_worker_processes(cycle, ccf->worker_processes,
NGX_PROCESS_RESPAWN);
ngx_start_cache_manager_processes(cycle, 0);
ngx_start_session_manager_processes(cycle, 0);
ngx_start_ip_blacklist_manager_processes(cycle, 0);
ngx_noaccepting = 0;
continue;
}
ngx_log_error(NGX_LOG_NOTICE, cycle->log, 0, "reconfiguring");
cycle = ngx_init_cycle(cycle);
if (cycle == NULL) {
cycle = (ngx_cycle_t *) ngx_cycle;
continue;
}
ngx_cycle = cycle;
ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx,
ngx_core_module);
ngx_start_worker_processes(cycle, ccf->worker_processes,
NGX_PROCESS_JUST_RESPAWN);
ngx_start_cache_manager_processes(cycle, 1);
ngx_start_session_manager_processes(cycle, 1);
ngx_start_ip_blacklist_manager_processes(cycle, 1);
/* allow new processes to start */
ngx_msleep(100);
live = 1;
ngx_signal_worker_processes(cycle,
ngx_signal_value(NGX_SHUTDOWN_SIGNAL));
}
if (ngx_restart) {
ngx_restart = 0;
ngx_start_worker_processes(cycle, ccf->worker_processes,
NGX_PROCESS_RESPAWN);
ngx_start_cache_manager_processes(cycle, 0);
ngx_start_session_manager_processes(cycle, 0);
ngx_start_ip_blacklist_manager_processes(cycle, 0);
live = 1;
}
if (ngx_reopen) {
ngx_reopen = 0;
ngx_log_error(NGX_LOG_NOTICE, cycle->log, 0, "reopening logs");
ngx_reopen_files(cycle, ccf->user);
ngx_signal_worker_processes(cycle,
ngx_signal_value(NGX_REOPEN_SIGNAL));
}
if (ngx_change_binary) {
ngx_change_binary = 0;
ngx_log_error(NGX_LOG_NOTICE, cycle->log, 0, "changing binary");
ngx_new_binary = ngx_exec_new_binary(cycle, ngx_argv);
}
if (ngx_noaccept) {
ngx_noaccept = 0;
ngx_noaccepting = 1;
ngx_signal_worker_processes(cycle,
ngx_signal_value(NGX_SHUTDOWN_SIGNAL));
}
}
}
ngx_cycle_t *
ngx_init_cycle(ngx_cycle_t *old_cycle)
{
void *rv;
char **senv, **env;
u_char *temppath;
ngx_err_t err;
ngx_uint_t i, n;
ngx_log_t *log;
ngx_time_t *tp;
ngx_conf_t conf;
ngx_pool_t *pool;
ngx_cycle_t *cycle, **old;
ngx_shm_zone_t *shm_zone, *oshm_zone;
ngx_list_part_t *part, *opart;
ngx_open_file_t *file;
ngx_listening_t *ls, *nls;
ngx_core_conf_t *ccf, *old_ccf;
ngx_core_module_t *module;
char hostname[NGX_MAXHOSTNAMELEN];
ngx_timezone_update();
/* force localtime update with a new timezone */
tp = ngx_timeofday();
tp->sec = 0;
ngx_time_update();
ngx_increase_pipe_generation();
log = old_cycle->log;
pool = ngx_create_pool(NGX_CYCLE_POOL_SIZE, log);
if (pool == NULL) {
return NULL;
}
pool->log = log;
cycle = ngx_pcalloc(pool, sizeof(ngx_cycle_t));
if (cycle == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
cycle->pool = pool;
cycle->log = log;
cycle->new_log.log_level = NGX_LOG_ERR;
cycle->old_cycle = old_cycle;
cycle->conf_prefix.len = old_cycle->conf_prefix.len;
cycle->conf_prefix.data = ngx_pstrdup(pool, &old_cycle->conf_prefix);
if (cycle->conf_prefix.data == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
cycle->prefix.len = old_cycle->prefix.len;
cycle->prefix.data = ngx_pstrdup(pool, &old_cycle->prefix);
if (cycle->prefix.data == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
cycle->conf_file.len = old_cycle->conf_file.len;
cycle->conf_file.data = ngx_pnalloc(pool, old_cycle->conf_file.len + 1);
if (cycle->conf_file.data == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
ngx_cpystrn(cycle->conf_file.data, old_cycle->conf_file.data,
old_cycle->conf_file.len + 1);
cycle->conf_param.len = old_cycle->conf_param.len;
cycle->conf_param.data = ngx_pstrdup(pool, &old_cycle->conf_param);
if (cycle->conf_param.data == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
n = old_cycle->pathes.nelts ? old_cycle->pathes.nelts : 10;
cycle->pathes.elts = ngx_pcalloc(pool, n * sizeof(ngx_path_t *));
if (cycle->pathes.elts == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
cycle->pathes.nelts = 0;
cycle->pathes.size = sizeof(ngx_path_t *);
cycle->pathes.nalloc = n;
cycle->pathes.pool = pool;
if (old_cycle->open_files.part.nelts) {
n = old_cycle->open_files.part.nelts;
for (part = old_cycle->open_files.part.next; part; part = part->next) {
n += part->nelts;
}
} else {
n = 20;
}
if (ngx_list_init(&cycle->open_files, pool, n, sizeof(ngx_open_file_t))
!= NGX_OK)
{
ngx_destroy_pool(pool);
return NULL;
}
if (old_cycle->shared_memory.part.nelts) {
n = old_cycle->shared_memory.part.nelts;
for (part = old_cycle->shared_memory.part.next; part; part = part->next)
{
n += part->nelts;
}
} else {
n = 1;
}
if (ngx_list_init(&cycle->shared_memory, pool, n, sizeof(ngx_shm_zone_t))
!= NGX_OK)
{
ngx_destroy_pool(pool);
return NULL;
}
n = old_cycle->listening.nelts ? old_cycle->listening.nelts : 10;
cycle->listening.elts = ngx_pcalloc(pool, n * sizeof(ngx_listening_t));
if (cycle->listening.elts == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
cycle->listening.nelts = 0;
cycle->listening.size = sizeof(ngx_listening_t);
cycle->listening.nalloc = n;
cycle->listening.pool = pool;
ngx_queue_init(&cycle->reusable_connections_queue);
cycle->conf_ctx = ngx_pcalloc(pool, ngx_max_module * sizeof(void *));
if (cycle->conf_ctx == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
if (gethostname(hostname, NGX_MAXHOSTNAMELEN) == -1) {
ngx_log_error(NGX_LOG_EMERG, log, ngx_errno, "gethostname() failed");
ngx_destroy_pool(pool);
return NULL;
}
/* on Linux gethostname() silently truncates name that does not fit */
hostname[NGX_MAXHOSTNAMELEN - 1] = '\0';
cycle->hostname.len = ngx_strlen(hostname);
cycle->hostname.data = ngx_pnalloc(pool, cycle->hostname.len);
if (cycle->hostname.data == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
ngx_strlow(cycle->hostname.data, (u_char *) hostname, cycle->hostname.len);
for (i = 0; ngx_modules[i]; i++) {
if (ngx_modules[i]->type != NGX_CORE_MODULE) {
continue;
}
module = ngx_modules[i]->ctx;
if (module->create_conf) {
rv = module->create_conf(cycle);
if (rv == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
cycle->conf_ctx[ngx_modules[i]->index] = rv;
}
}
senv = environ;
ngx_memzero(&conf, sizeof(ngx_conf_t));
/* STUB: init array ? */
conf.args = ngx_array_create(pool, 10, sizeof(ngx_str_t));
if (conf.args == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
conf.temp_pool = ngx_create_pool(NGX_CYCLE_POOL_SIZE, log);
if (conf.temp_pool == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
conf.ctx = cycle->conf_ctx;
conf.cycle = cycle;
conf.pool = pool;
conf.log = log;
conf.module_type = NGX_CORE_MODULE;
conf.cmd_type = NGX_MAIN_CONF;
#if 0
log->log_level = NGX_LOG_DEBUG_ALL;
#endif
if (ngx_conf_param(&conf) != NGX_CONF_OK) {
environ = senv;
ngx_destroy_cycle_pools(&conf);
return NULL;
}
if (ngx_conf_parse(&conf, &cycle->conf_file) != NGX_CONF_OK) {
environ = senv;
ngx_destroy_cycle_pools(&conf);
return NULL;
}
if (ngx_test_config && !ngx_quiet_mode) {
ngx_log_stderr(0, "the configuration file %s syntax is ok",
cycle->conf_file.data);
}
for (i = 0; ngx_modules[i]; i++) {
if (ngx_modules[i]->type != NGX_CORE_MODULE) {
continue;
}
module = ngx_modules[i]->ctx;
if (module->init_conf) {
if (module->init_conf(cycle, cycle->conf_ctx[ngx_modules[i]->index])
== NGX_CONF_ERROR)
{
environ = senv;
ngx_destroy_cycle_pools(&conf);
return NULL;
}
}
}
if (ngx_process == NGX_PROCESS_SIGNALLER) {
return cycle;
}
ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_core_module);
if (ngx_test_config) {
if (ngx_create_pidfile(&ccf->pid, log) != NGX_OK) {
goto failed;
}
} else if (!ngx_is_init_cycle(old_cycle)) {
/*
* we do not create the pid file in the first ngx_init_cycle() call
* because we need to write the demonized process pid
*/
old_ccf = (ngx_core_conf_t *) ngx_get_conf(old_cycle->conf_ctx,
ngx_core_module);
if (ccf->pid.len != old_ccf->pid.len
|| ngx_strcmp(ccf->pid.data, old_ccf->pid.data) != 0)
{
/* new pid file name */
if (ngx_create_pidfile(&ccf->pid, log) != NGX_OK) {
goto failed;
}
ngx_delete_pidfile(old_cycle);
}
}
if (ngx_test_lockfile(cycle->lock_file.data, log) != NGX_OK) {
goto failed;
}
if (ngx_create_pathes(cycle, ccf->user) != NGX_OK) {
goto failed;
}
if (cycle->new_log.file == NULL) {
cycle->new_log.file = ngx_conf_open_file(cycle, &error_log);
if (cycle->new_log.file == NULL) {
goto failed;
}
}
/* open pipes */
if (!ngx_is_init_cycle(old_cycle)) {
if (ngx_open_pipes(cycle) == NGX_ERROR) {
ngx_log_error(NGX_LOG_EMERG, cycle->log, 0, "can not open pipes");
goto failed;
}
}
/* open the new files */
part = &cycle->open_files.part;
file = part->elts;
temppath = ngx_palloc(conf.temp_pool, NGX_MAX_PATH);
for (i = 0; /* void */ ; i++) {
if (i >= part->nelts) {
if (part->next == NULL) {
break;
}
part = part->next;
file = part->elts;
i = 0;
}
if (file[i].name.len == 0) {
continue;
}
if (file[i].name.len >= NGX_MAX_PATH) {
ngx_log_error(NGX_LOG_EMERG, log, 0,
"path \"%s\" is too long",
file[i].name.data);
goto failed;
}
ngx_cpystrn(temppath, file[i].name.data, file[i].name.len + 1);
err = ngx_create_full_path(temppath, 0755);
if (err != 0) {
ngx_log_error(NGX_LOG_EMERG, log, ngx_errno,
ngx_create_dir_n " \"%s\" failed",
file[i].name.data);
goto failed;
}
file[i].fd = ngx_open_file(file[i].name.data,
NGX_FILE_APPEND,
NGX_FILE_CREATE_OR_OPEN,
NGX_FILE_DEFAULT_ACCESS);
ngx_log_debug3(NGX_LOG_DEBUG_CORE, log, 0,
"log: %p %d \"%s\"",
&file[i], file[i].fd, file[i].name.data);
if (file[i].fd == NGX_INVALID_FILE) {
ngx_log_error(NGX_LOG_EMERG, log, ngx_errno,
ngx_open_file_n " \"%s\" failed",
file[i].name.data);
goto failed;
}
#if !(NGX_WIN32)
if (fcntl(file[i].fd, F_SETFD, FD_CLOEXEC) == -1) {
ngx_log_error(NGX_LOG_EMERG, log, ngx_errno,
"fcntl(FD_CLOEXEC) \"%s\" failed",
file[i].name.data);
goto failed;
}
#endif
}
#if (NGX_SYSLOG)
if (cycle->log->syslog != NULL
&& cycle->log->syslog->fd != NGX_INVALID_FILE)
{
ngx_close_socket(cycle->log->syslog->fd);
}
#endif
cycle->log = &cycle->new_log;
pool->log = &cycle->new_log;
/* create shared memory */
part = &cycle->shared_memory.part;
shm_zone = part->elts;
for (i = 0; /* void */ ; i++) {
if (i >= part->nelts) {
if (part->next == NULL) {
break;
}
part = part->next;
shm_zone = part->elts;
i = 0;
}
if (shm_zone[i].shm.size == 0) {
ngx_log_error(NGX_LOG_EMERG, log, 0,
"zero size shared memory zone \"%V\"",
&shm_zone[i].shm.name);
goto failed;
}
shm_zone[i].shm.log = cycle->log;
opart = &old_cycle->shared_memory.part;
oshm_zone = opart->elts;
for (n = 0; /* void */ ; n++) {
if (n >= opart->nelts) {
if (opart->next == NULL) {
break;
}
opart = opart->next;
oshm_zone = opart->elts;
n = 0;
}
if (shm_zone[i].shm.name.len != oshm_zone[n].shm.name.len) {
continue;
}
if (ngx_strncmp(shm_zone[i].shm.name.data,
oshm_zone[n].shm.name.data,
shm_zone[i].shm.name.len)
!= 0)
{
continue;
}
if (shm_zone[i].shm.size == oshm_zone[n].shm.size) {
shm_zone[i].shm.addr = oshm_zone[n].shm.addr;
if (shm_zone[i].init(&shm_zone[i], oshm_zone[n].data)
!= NGX_OK)
{
goto failed;
}
goto shm_zone_found;
}
ngx_shm_free(&oshm_zone[n].shm);
break;
}
if (ngx_shm_alloc(&shm_zone[i].shm) != NGX_OK) {
goto failed;
}
if (ngx_init_zone_pool(cycle, &shm_zone[i]) != NGX_OK) {
goto failed;
}
if (shm_zone[i].init(&shm_zone[i], NULL) != NGX_OK) {
goto failed;
}
shm_zone_found:
continue;
}
/* handle the listening sockets */
if (old_cycle->listening.nelts) {
ls = old_cycle->listening.elts;
for (i = 0; i < old_cycle->listening.nelts; i++) {
ls[i].remain = 0;
}
nls = cycle->listening.elts;
for (n = 0; n < cycle->listening.nelts; n++) {
for (i = 0; i < old_cycle->listening.nelts; i++) {
if (ls[i].ignore) {
continue;
}
if (ngx_cmp_sockaddr(nls[n].sockaddr, ls[i].sockaddr) == NGX_OK)
{
nls[n].fd = ls[i].fd;
nls[n].previous = &ls[i];
ls[i].remain = 1;
if (ls[n].backlog != nls[i].backlog) {
nls[n].listen = 1;
}
#if (NGX_HAVE_DEFERRED_ACCEPT && defined SO_ACCEPTFILTER)
/*
* FreeBSD, except the most recent versions,
* could not remove accept filter
*/
nls[n].deferred_accept = ls[i].deferred_accept;
if (ls[i].accept_filter && nls[n].accept_filter) {
if (ngx_strcmp(ls[i].accept_filter,
nls[n].accept_filter)
!= 0)
{
nls[n].delete_deferred = 1;
nls[n].add_deferred = 1;
}
} else if (ls[i].accept_filter) {
nls[n].delete_deferred = 1;
} else if (nls[n].accept_filter) {
nls[n].add_deferred = 1;
}
#endif
#if (NGX_HAVE_DEFERRED_ACCEPT && defined TCP_DEFER_ACCEPT)
if (ls[n].deferred_accept && !nls[n].deferred_accept) {
nls[n].delete_deferred = 1;
} else if (ls[i].deferred_accept != nls[n].deferred_accept)
{
nls[n].add_deferred = 1;
}
#endif
break;
}
}
if (nls[n].fd == -1) {
nls[n].open = 1;
}
}
} else {
ls = cycle->listening.elts;
for (i = 0; i < cycle->listening.nelts; i++) {
ls[i].open = 1;
#if (NGX_HAVE_DEFERRED_ACCEPT && defined SO_ACCEPTFILTER)
if (ls[i].accept_filter) {
ls[i].add_deferred = 1;
}
#endif
#if (NGX_HAVE_DEFERRED_ACCEPT && defined TCP_DEFER_ACCEPT)
if (ls[i].deferred_accept) {
ls[i].add_deferred = 1;
}
#endif
}
}
if (ngx_open_listening_sockets(cycle) != NGX_OK) {
goto failed;
}
if (!ngx_test_config) {
ngx_configure_listening_sockets(cycle);
}
/* commit the new cycle configuration */
if (!ngx_use_stderr && cycle->log->file->fd != ngx_stderr) {
if (ngx_set_stderr(cycle->log->file->fd) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
ngx_set_stderr_n " failed");
}
}
pool->log = cycle->log;
for (i = 0; ngx_modules[i]; i++) {
if (ngx_modules[i]->init_module) {
if (ngx_modules[i]->init_module(cycle) != NGX_OK) {
/* fatal */
exit(1);
}
}
}
/* close and delete stuff that lefts from an old cycle */
/* free the unnecessary shared memory */
opart = &old_cycle->shared_memory.part;
oshm_zone = opart->elts;
for (i = 0; /* void */ ; i++) {
if (i >= opart->nelts) {
if (opart->next == NULL) {
goto old_shm_zone_done;
}
opart = opart->next;
oshm_zone = opart->elts;
i = 0;
}
part = &cycle->shared_memory.part;
shm_zone = part->elts;
for (n = 0; /* void */ ; n++) {
if (n >= part->nelts) {
if (part->next == NULL) {
break;
}
part = part->next;
shm_zone = part->elts;
n = 0;
}
if (oshm_zone[i].shm.name.len == shm_zone[n].shm.name.len
&& ngx_strncmp(oshm_zone[i].shm.name.data,
shm_zone[n].shm.name.data,
oshm_zone[i].shm.name.len)
== 0)
{
goto live_shm_zone;
}
}
ngx_shm_free(&oshm_zone[i].shm);
live_shm_zone:
continue;
}
old_shm_zone_done:
/* close the unnecessary listening sockets */
ls = old_cycle->listening.elts;
for (i = 0; i < old_cycle->listening.nelts; i++) {
if (ls[i].remain || ls[i].fd == -1) {
continue;
}
if (ngx_close_socket(ls[i].fd) == -1) {
ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
ngx_close_socket_n " listening socket on %V failed",
&ls[i].addr_text);
}
#if (NGX_HAVE_UNIX_DOMAIN)
if (ls[i].sockaddr->sa_family == AF_UNIX) {
u_char *name;
name = ls[i].addr_text.data + sizeof("unix:") - 1;
ngx_log_error(NGX_LOG_WARN, cycle->log, 0,
"deleting socket %s", name);
if (ngx_delete_file(name) == -1) {
ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_socket_errno,
ngx_delete_file_n " %s failed", name);
}
}
#endif
}
/* close the unnecessary open files */
part = &old_cycle->open_files.part;
file = part->elts;
for (i = 0; /* void */ ; i++) {
if (i >= part->nelts) {
if (part->next == NULL) {
break;
}
part = part->next;
file = part->elts;
i = 0;
}
if (file[i].fd == NGX_INVALID_FILE || file[i].fd == ngx_stderr) {
continue;
}
if (ngx_close_file(file[i].fd) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_EMERG, log, ngx_errno,
ngx_close_file_n " \"%s\" failed",
file[i].name.data);
}
}
ngx_destroy_pool(conf.temp_pool);
if (ngx_process == NGX_PROCESS_MASTER || ngx_is_init_cycle(old_cycle)) {
/*
* perl_destruct() frees environ, if it is not the same as it was at
* perl_construct() time, therefore we save the previous cycle
* environment before ngx_conf_parse() where it will be changed.
*/
env = environ;
environ = senv;
ngx_destroy_pool(old_cycle->pool);
cycle->old_cycle = NULL;
environ = env;
return cycle;
}
if (ngx_temp_pool == NULL) {
ngx_temp_pool = ngx_create_pool(128, cycle->log);
if (ngx_temp_pool == NULL) {
ngx_log_error(NGX_LOG_EMERG, cycle->log, 0,
"could not create ngx_temp_pool");
exit(1);
}
n = 10;
ngx_old_cycles.elts = ngx_pcalloc(ngx_temp_pool,
n * sizeof(ngx_cycle_t *));
if (ngx_old_cycles.elts == NULL) {
exit(1);
}
ngx_old_cycles.nelts = 0;
ngx_old_cycles.size = sizeof(ngx_cycle_t *);
ngx_old_cycles.nalloc = n;
ngx_old_cycles.pool = ngx_temp_pool;
ngx_cleaner_event.handler = ngx_clean_old_cycles;
ngx_cleaner_event.log = cycle->log;
ngx_cleaner_event.data = &dumb;
dumb.fd = (ngx_socket_t) -1;
}
ngx_temp_pool->log = cycle->log;
old = ngx_array_push(&ngx_old_cycles);
if (old == NULL) {
exit(1);
}
*old = old_cycle;
if (!ngx_cleaner_event.timer_set) {
ngx_add_timer(&ngx_cleaner_event, 30000);
ngx_cleaner_event.timer_set = 1;
}
return cycle;
failed:
if (!ngx_is_init_cycle(old_cycle)) {
old_ccf = (ngx_core_conf_t *) ngx_get_conf(old_cycle->conf_ctx,
ngx_core_module);
if (old_ccf->environment) {
environ = old_ccf->environment;
}
}
/* rollback the new cycle configuration */
part = &cycle->open_files.part;
file = part->elts;
for (i = 0; /* void */ ; i++) {
if (i >= part->nelts) {
if (part->next == NULL) {
break;
}
part = part->next;
file = part->elts;
i = 0;
}
if (file[i].fd == NGX_INVALID_FILE || file[i].fd == ngx_stderr) {
continue;
}
if (ngx_close_file(file[i].fd) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_EMERG, log, ngx_errno,
ngx_close_file_n " \"%s\" failed",
file[i].name.data);
}
}
ngx_close_pipes();
if (ngx_test_config) {
ngx_destroy_cycle_pools(&conf);
return NULL;
}
ls = cycle->listening.elts;
for (i = 0; i < cycle->listening.nelts; i++) {
if (ls[i].fd == -1 || !ls[i].open) {
continue;
}
if (ngx_close_socket(ls[i].fd) == -1) {
ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
ngx_close_socket_n " %V failed",
&ls[i].addr_text);
}
}
ngx_destroy_cycle_pools(&conf);
return NULL;
}
// http://www.xuebuyuan.com/557917.html
// http://blog.csdn.net/lu_ming/article/details/5144427
// http://blog.csdn.net/lengzijian/article/details/7587740
void
ngx_master_process_cycle(ngx_cycle_t *cycle)
{
char *title;
u_char *p;
size_t size;
ngx_int_t i;
ngx_uint_t n, sigio;
sigset_t set;
struct itimerval itv;
ngx_uint_t live;
ngx_msec_t delay;
ngx_listening_t *ls;
ngx_core_conf_t *ccf;
// block these signals
sigemptyset(&set);
sigaddset(&set, SIGCHLD);
sigaddset(&set, SIGALRM);
sigaddset(&set, SIGIO);
sigaddset(&set, SIGINT);
sigaddset(&set, ngx_signal_value(NGX_RECONFIGURE_SIGNAL));
sigaddset(&set, ngx_signal_value(NGX_REOPEN_SIGNAL));
sigaddset(&set, ngx_signal_value(NGX_NOACCEPT_SIGNAL));
sigaddset(&set, ngx_signal_value(NGX_TERMINATE_SIGNAL));
sigaddset(&set, ngx_signal_value(NGX_SHUTDOWN_SIGNAL));
sigaddset(&set, ngx_signal_value(NGX_CHANGEBIN_SIGNAL));
if (sigprocmask(SIG_BLOCK, &set, NULL) == -1) {
ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
"sigprocmask() failed");
}
sigemptyset(&set);
// set title = "master process" + argv[0] + argv[1] + ...
size = sizeof(master_process);
for (i = 0; i < ngx_argc; i++) {
size += ngx_strlen(ngx_argv[i]) + 1;
}
title = ngx_pnalloc(cycle->pool, size);
p = ngx_cpymem(title, master_process, sizeof(master_process) - 1);
for (i = 0; i < ngx_argc; i++) {
*p++ = ' ';
p = ngx_cpystrn(p, (u_char *) ngx_argv[i], size);
}
ngx_setproctitle(title);
// Start workers and cache_manager
ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_core_module);
ngx_start_worker_processes(cycle, ccf->worker_processes,
NGX_PROCESS_RESPAWN);
ngx_start_cache_manager_processes(cycle, 0);
ngx_new_binary = 0;
delay = 0;
sigio = 0;
live = 1;
for ( ;; ) {
if (delay) {
if (ngx_sigalrm) {
sigio = 0;
delay *= 2;
ngx_sigalrm = 0;
}
ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
"termination cycle: %d", delay);
itv.it_interval.tv_sec = 0;
itv.it_interval.tv_usec = 0;
itv.it_value.tv_sec = delay / 1000;
itv.it_value.tv_usec = (delay % 1000 ) * 1000;
if (setitimer(ITIMER_REAL, &itv, NULL) == -1) {
ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
"setitimer() failed");
}
}
ngx_log_debug0(NGX_LOG_DEBUG_EVENT, cycle->log, 0, "sigsuspend");
// sigsuspend() temporarily replaces the signal mask of the calling
// process with the mask given by mask and then suspends the process
// until delivery of a signal whose action is to invoke a
// signal handler or to terminate a process.
sigsuspend(&set);
ngx_time_update();
ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
"wake up, sigio %i", sigio);
if (ngx_reap) {
ngx_reap = 0;
ngx_log_debug0(NGX_LOG_DEBUG_EVENT, cycle->log, 0, "reap children");
live = ngx_reap_children(cycle);
}
if (!live && (ngx_terminate || ngx_quit)) {
ngx_master_process_exit(cycle);
}
// on SIGINT set ngx_terminate = 1
if (ngx_terminate) {
if (delay == 0) {
delay = 50;
}
if (sigio) {
sigio--;
continue;
}
sigio = ccf->worker_processes + 2 /* cache processes */;
if (delay > 1000) {
ngx_signal_worker_processes(cycle, SIGKILL);
} else {
ngx_signal_worker_processes(cycle,
ngx_signal_value(NGX_TERMINATE_SIGNAL));
}
continue;
}
if (ngx_quit) {
ngx_signal_worker_processes(cycle,
ngx_signal_value(NGX_SHUTDOWN_SIGNAL));
ls = cycle->listening.elts;
for (n = 0; n < cycle->listening.nelts; n++) {
if (ngx_close_socket(ls[n].fd) == -1) {
ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_socket_errno,
ngx_close_socket_n " %V failed",
&ls[n].addr_text);
}
}
cycle->listening.nelts = 0;
continue;
}
if (ngx_reconfigure) {
ngx_reconfigure = 0;
if (ngx_new_binary) {
ngx_start_worker_processes(cycle, ccf->worker_processes,
NGX_PROCESS_RESPAWN);
ngx_start_cache_manager_processes(cycle, 0);
ngx_noaccepting = 0;
continue;
}
ngx_log_error(NGX_LOG_NOTICE, cycle->log, 0, "reconfiguring");
cycle = ngx_init_cycle(cycle);
if (cycle == NULL) {
cycle = (ngx_cycle_t *) ngx_cycle;
continue;
}
ngx_cycle = cycle;
ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx,
ngx_core_module);
ngx_start_worker_processes(cycle, ccf->worker_processes,
NGX_PROCESS_JUST_RESPAWN);
ngx_start_cache_manager_processes(cycle, 1);
// Nginx won't guarantee the new workers will be ready to accept
// new connections before sending shutdown signals to old workers.
// If the new works takes more than 100ms to startup, then there is
// a risk that the old workers are shutdown but new workers are still
// not ready, as a result, new connections will be pending until a new
// worker is ready to handle.
/* allow new processes to start */
ngx_msleep(100);
live = 1;
ngx_signal_worker_processes(cycle,
ngx_signal_value(NGX_SHUTDOWN_SIGNAL));
}
if (ngx_restart) {
ngx_restart = 0;
ngx_start_worker_processes(cycle, ccf->worker_processes,
NGX_PROCESS_RESPAWN);
ngx_start_cache_manager_processes(cycle, 0);
live = 1;
}
if (ngx_reopen) {
ngx_reopen = 0;
ngx_log_error(NGX_LOG_NOTICE, cycle->log, 0, "reopening logs");
ngx_reopen_files(cycle, ccf->user);
ngx_signal_worker_processes(cycle,
ngx_signal_value(NGX_REOPEN_SIGNAL));
}
if (ngx_change_binary) {
ngx_change_binary = 0;
ngx_log_error(NGX_LOG_NOTICE, cycle->log, 0, "changing binary");
ngx_new_binary = ngx_exec_new_binary(cycle, ngx_argv);
}
if (ngx_noaccept) {
ngx_noaccept = 0;
ngx_noaccepting = 1;
ngx_signal_worker_processes(cycle,
ngx_signal_value(NGX_SHUTDOWN_SIGNAL));
}
}
}