ngx_int_t
ngx_http_parse_unsafe_uri(ngx_http_request_t *r, ngx_str_t *uri,
ngx_str_t *args, ngx_uint_t *flags)
{
u_char ch, *p;
size_t len;
len = uri->len;
p = uri->data;
if (len == 0 || p[0] == '?') {
goto unsafe;
}
if (p[0] == '.' && len == 3 && p[1] == '.' && (ngx_path_separator(p[2]))) {
goto unsafe;
}
for ( /* void */ ; len; len--) {
ch = *p++;
if (usual[ch >> 5] & (1 << (ch & 0x1f))) {
continue;
}
if (ch == '?') {
args->len = len - 1;
args->data = p;
uri->len -= len;
return NGX_OK;
}
if (ch == '\0') {
goto unsafe;
}
if (ngx_path_separator(ch) && len > 2) {
/* detect "/../" */
if (p[0] == '.' && p[1] == '.' && ngx_path_separator(p[2])) {
goto unsafe;
}
}
}
return NGX_OK;
unsafe:
if (*flags & NGX_HTTP_LOG_UNSAFE) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"unsafe URI \"%V\" was detected", uri);
}
return NGX_ERROR;
}
static ngx_int_t
ngx_rtmp_record_publish(ngx_rtmp_session_t *s, ngx_rtmp_publish_t *v)
{
ngx_rtmp_record_app_conf_t *racf;
ngx_rtmp_record_ctx_t *ctx;
u_char *p;
ngx_uint_t n;
ngx_rtmp_record_node_ctx_t *rctx;
if (s->auto_pushed) {
goto next;
}
racf = ngx_rtmp_get_module_app_conf(s, ngx_rtmp_record_module);
if (racf == NULL || racf->nodes.nelts == 0) {
goto next;
}
if (ngx_rtmp_record_init(s) != NGX_OK) {
return NGX_ERROR;
}
ngx_log_debug1(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
"record: publish %ui nodes",
racf->nodes.nelts);
ctx = ngx_rtmp_get_module_ctx(s, ngx_rtmp_record_module);
ngx_memcpy(ctx->name, v->name, sizeof(ctx->name));
ngx_memcpy(ctx->args, v->args, sizeof(ctx->args));
/* terminate name on /../ */
for (p = ctx->name; *p; ++p) {
if (ngx_path_separator(p[0]) &&
p[1] == '.' && p[2] == '.' &&
ngx_path_separator(p[3]))
{
*p = 0;
break;
}
}
rctx = ctx->nodes.elts;
for (n = 0; n < ctx->nodes.nelts; ++n, ++rctx) {
if (rctx->conf->flags & (NGX_RTMP_RECORD_OFF|NGX_RTMP_RECORD_MANUAL)) {
continue;
}
ngx_rtmp_record_node_open(s, rctx);
}
next:
return next_publish(s, v);
}
static ngx_int_t
ngx_process_options(ngx_cycle_t *cycle)
{
u_char *p;
size_t len;
if (ngx_prefix) {
len = ngx_strlen(ngx_prefix);
p = ngx_prefix;
if (!ngx_path_separator(*p)) {
p = ngx_pnalloc(cycle->pool, len + 1);
if (p == NULL) {
return NGX_ERROR;
}
ngx_memcpy(p, ngx_prefix, len);
p[len++] = '/';
}
cycle->conf_prefix.len = len;
cycle->conf_prefix.data = p;
cycle->prefix.len = len;
cycle->prefix.data = p;
} else {
#ifndef NGX_PREFIX
p = ngx_pnalloc(cycle->pool, NGX_MAX_PATH);
if (p == NULL) {
return NGX_ERROR;
}
if (ngx_getcwd(p, NGX_MAX_PATH) == 0) {
ngx_log_stderr(ngx_errno, "[emerg]: " ngx_getcwd_n " failed");
return NGX_ERROR;
}
len = ngx_strlen(p);
p[len++] = '/';
cycle->conf_prefix.len = len;
cycle->conf_prefix.data = p;
cycle->prefix.len = len;
cycle->prefix.data = p;
#else
#ifdef NGX_CONF_PREFIX
ngx_str_set(&cycle->conf_prefix, NGX_CONF_PREFIX);
#else
ngx_str_set(&cycle->conf_prefix, NGX_PREFIX);
#endif
ngx_str_set(&cycle->prefix, NGX_PREFIX);
#endif
}
if (ngx_conf_file) {
cycle->conf_file.len = ngx_strlen(ngx_conf_file);
cycle->conf_file.data = ngx_conf_file;
} else {
ngx_str_set(&cycle->conf_file, NGX_CONF_PATH);
}
if (ngx_conf_full_name(cycle, &cycle->conf_file, 0) != NGX_OK) {
return NGX_ERROR;
}
for (p = cycle->conf_file.data + cycle->conf_file.len - 1;
p > cycle->conf_file.data;
p--)
{
if (ngx_path_separator(*p)) { // 将config_file路径按照分隔符“/”分割
cycle->conf_prefix.len = p - ngx_cycle->conf_file.data + 1;
cycle->conf_prefix.data = ngx_cycle->conf_file.data;
break;
}
}
if (ngx_conf_params) {
cycle->conf_param.len = ngx_strlen(ngx_conf_params);
cycle->conf_param.data = ngx_conf_params;
}
if (ngx_test_config) {
cycle->log->log_level = NGX_LOG_INFO;
}
return NGX_OK;
}
static ngx_int_t
ngx_http_headers_more_validate_host(ngx_str_t *host, ngx_pool_t *pool,
ngx_uint_t alloc)
{
u_char *h, ch;
size_t i, dot_pos, host_len;
enum {
sw_usual = 0,
sw_literal,
sw_rest
} state;
dot_pos = host->len;
host_len = host->len;
h = host->data;
state = sw_usual;
for (i = 0; i < host->len; i++) {
ch = h[i];
switch (ch) {
case '.':
if (dot_pos == i - 1) {
return NGX_DECLINED;
}
dot_pos = i;
break;
case ':':
if (state == sw_usual) {
host_len = i;
state = sw_rest;
}
break;
case '[':
if (i == 0) {
state = sw_literal;
}
break;
case ']':
if (state == sw_literal) {
host_len = i + 1;
state = sw_rest;
}
break;
case '\0':
return NGX_DECLINED;
default:
if (ngx_path_separator(ch)) {
return NGX_DECLINED;
}
if (ch >= 'A' && ch <= 'Z') {
alloc = 1;
}
break;
}
}
if (dot_pos == host_len - 1) {
host_len--;
}
if (host_len == 0) {
return NGX_DECLINED;
}
if (alloc) {
host->data = ngx_pnalloc(pool, host_len);
if (host->data == NULL) {
return NGX_ERROR;
}
ngx_strlow(host->data, h, host_len);
}
host->len = host_len;
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;
}
static ngx_int_t
ngx_rtmp_play_play(ngx_rtmp_session_t *s, ngx_rtmp_play_t *v)
{
ngx_rtmp_play_main_conf_t *pmcf;
ngx_rtmp_play_app_conf_t *pacf;
ngx_rtmp_play_ctx_t *ctx;
u_char *p;
ngx_event_t *e;
ngx_rtmp_play_fmt_t *fmt, **pfmt;
ngx_str_t *pfx, *sfx;
ngx_str_t name;
ngx_uint_t n;
static ngx_str_t nosfx;
static u_char path[NGX_MAX_PATH];
pmcf = ngx_rtmp_get_module_main_conf(s, ngx_rtmp_play_module);
pacf = ngx_rtmp_get_module_app_conf(s, ngx_rtmp_play_module);
if (pacf == NULL || pacf->root.len == 0) {
goto next;
}
ngx_log_debug2(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
"play: play name='%s' timestamp=%i",
v->name, (ngx_int_t) v->start);
ctx = ngx_rtmp_get_module_ctx(s, ngx_rtmp_play_module);
if (ctx && ctx->file.fd != NGX_INVALID_FILE) {
ngx_log_error(NGX_LOG_ERR, s->connection->log, 0,
"play: already playing");
goto next;
}
/* check for double-dot in v->name;
* we should not move out of play directory */
for (p = v->name; *p; ++p) {
if (ngx_path_separator(p[0]) &&
p[1] == '.' && p[2] == '.' &&
ngx_path_separator(p[3]))
{
ngx_log_error(NGX_LOG_ERR, s->connection->log, 0,
"play: bad name '%s'", v->name);
return NGX_ERROR;
}
}
if (ctx == NULL) {
ctx = ngx_palloc(s->connection->pool, sizeof(ngx_rtmp_play_ctx_t));
ngx_rtmp_set_ctx(s, ctx, ngx_rtmp_play_module);
}
ngx_memzero(ctx, sizeof(*ctx));
ctx->file.log = s->connection->log;
name.len = ngx_strlen(v->name);
name.data = v->name;
pfmt = pmcf->fmts.elts;
for (n = 0; n < pmcf->fmts.nelts; ++n, ++pfmt) {
fmt = *pfmt;
pfx = &fmt->pfx;
sfx = &fmt->sfx;
if (pfx->len == 0 && ctx->fmt == NULL) {
ctx->fmt = fmt;
}
if (pfx->len && name.len >= pfx->len &&
ngx_strncasecmp(pfx->data, name.data, pfx->len) == 0)
{
name.data += pfx->len;
name.len -= pfx->len;
ctx->fmt = fmt;
break;
}
if (name.len >= sfx->len &&
ngx_strncasecmp(sfx->data, name.data + name.len - sfx->len,
sfx->len) == 0)
{
ctx->fmt = fmt;
}
}
if (ctx->fmt == NULL) {
ngx_log_error(NGX_LOG_ERR, s->connection->log, 0,
"play: fmt not found");
goto next;
}
ngx_log_debug1(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
"play: fmt found: '%V'", &ctx->fmt->name);
sfx = &ctx->fmt->sfx;
if (name.len >= sfx->len &&
ngx_strncasecmp(sfx->data, name.data + name.len - sfx->len,
sfx->len)
== 0)
{
sfx = &nosfx;
}
p = ngx_snprintf(path, sizeof(path), "%V/%V%V", &pacf->root, &name, sfx);
*p = 0;
ctx->file.fd = ngx_open_file(path, NGX_FILE_RDONLY, NGX_FILE_OPEN,
NGX_FILE_DEFAULT_ACCESS);
if (ctx->file.fd == NGX_INVALID_FILE) {
ngx_log_error(NGX_LOG_ERR, s->connection->log, 0,
"play: error opening file '%s'", path);
return NGX_ERROR;
}
ngx_log_debug1(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
"play: opened file '%s'", path);
e = &ctx->send_evt;
e->data = s;
e->handler = ngx_rtmp_play_send;
e->log = s->connection->log;
ngx_rtmp_send_user_recorded(s, 1);
if (ngx_rtmp_play_init(s) != NGX_OK) {
return NGX_ERROR;
}
if (ngx_rtmp_play_start(s, v->start) != NGX_OK) {
return NGX_ERROR;
}
next:
return next_play(s, v);
}
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) {
/* #3099: Be silent about the read only filesystem.
* The error log is routed to /tmp (tmpfs) in nginx.conf.
*/
#if 0
ngx_log_stderr(ngx_errno,
"[alert] could not open error log file: "
ngx_open_file_n " \"%s\" failed", name);
#endif
#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)
{
static ngx_str_t error_log = ngx_string(NGX_ERROR_LOG_PATH);
if (cycle->new_log.file == NULL) {
cycle->new_log.file = ngx_conf_open_file(cycle, &error_log);
if (cycle->new_log.file == NULL) {
return NGX_ERROR;
}
cycle->new_log.log_level = NGX_LOG_ERR;
}
return NGX_OK;
}
ngx_int_t
ngx_log_redirect_stderr(ngx_cycle_t *cycle)
{
ngx_fd_t fd;
if (cycle->log_use_stderr) {
return NGX_OK;
}
fd = cycle->log->file->fd;
if (fd != ngx_stderr) {
if (ngx_set_stderr(fd) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
ngx_set_stderr_n " failed");
return NGX_ERROR;
}
}
return NGX_OK;
}
static ngx_int_t
ngx_rtmp_play_play(ngx_rtmp_session_t *s, ngx_rtmp_play_t *v)
{
ngx_rtmp_play_main_conf_t *pmcf;
ngx_rtmp_play_app_conf_t *pacf;
ngx_rtmp_play_ctx_t *ctx;
u_char *p;
ngx_rtmp_play_fmt_t *fmt, **pfmt;
ngx_str_t *pfx, *sfx;
ngx_str_t name;
ngx_uint_t n;
pmcf = ngx_rtmp_get_module_main_conf(s, ngx_rtmp_play_module);
pacf = ngx_rtmp_get_module_app_conf(s, ngx_rtmp_play_module);
if (pacf == NULL || pacf->entries.nelts == 0) {
goto next;
}
ngx_log_error(NGX_LOG_INFO, s->connection->log, 0,
"play: play name='%s' timestamp=%i",
v->name, (ngx_int_t) v->start);
ctx = ngx_rtmp_get_module_ctx(s, ngx_rtmp_play_module);
if (ctx && ctx->file.fd != NGX_INVALID_FILE) {
ngx_log_error(NGX_LOG_ERR, s->connection->log, 0,
"play: already playing");
goto next;
}
/* check for double-dot in v->name;
* we should not move out of play directory */
for (p = v->name; *p; ++p) {
if (ngx_path_separator(p[0]) &&
p[1] == '.' && p[2] == '.' &&
ngx_path_separator(p[3]))
{
ngx_log_error(NGX_LOG_ERR, s->connection->log, 0,
"play: bad name '%s'", v->name);
return NGX_ERROR;
}
}
if (ctx == NULL) {
ctx = ngx_palloc(s->connection->pool, sizeof(ngx_rtmp_play_ctx_t));
ngx_rtmp_set_ctx(s, ctx, ngx_rtmp_play_module);
}
ngx_memzero(ctx, sizeof(*ctx));
ctx->session = s;
ctx->aindex = ngx_rtmp_play_parse_index('a', v->args);
ctx->vindex = ngx_rtmp_play_parse_index('v', v->args);
ctx->file.log = s->connection->log;
ngx_memcpy(ctx->name, v->name, NGX_RTMP_MAX_NAME);
name.len = ngx_strlen(v->name);
name.data = v->name;
pfmt = pmcf->fmts.elts;
for (n = 0; n < pmcf->fmts.nelts; ++n, ++pfmt) {
fmt = *pfmt;
pfx = &fmt->pfx;
sfx = &fmt->sfx;
if (pfx->len == 0 && ctx->fmt == NULL) {
ctx->fmt = fmt;
}
if (pfx->len && name.len >= pfx->len &&
ngx_strncasecmp(pfx->data, name.data, pfx->len) == 0)
{
ctx->pfx_size = pfx->len;
ctx->fmt = fmt;
break;
}
if (name.len >= sfx->len &&
ngx_strncasecmp(sfx->data, name.data + name.len - sfx->len,
sfx->len) == 0)
{
ctx->fmt = fmt;
}
}
if (ctx->fmt == NULL) {
ngx_log_error(NGX_LOG_ERR, s->connection->log, 0,
"play: fmt not found");
goto next;
}
ctx->file.fd = NGX_INVALID_FILE;
ctx->nentry = NGX_CONF_UNSET_UINT;
ctx->post_seek = NGX_CONF_UNSET_UINT;
sfx = &ctx->fmt->sfx;
if (name.len < sfx->len ||
ngx_strncasecmp(sfx->data, name.data + name.len - sfx->len,
sfx->len))
{
ctx->sfx = *sfx;
}
ngx_log_debug1(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
"play: fmt=%V", &ctx->fmt->name);
return ngx_rtmp_play_next_entry(s, v);
next:
return next_play(s, v);
}
//打开NGX_ERROR_LOG_PATH文件
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); //"NGX_PREFIX/NGX_ERROR_LOG_PATH"
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);//打开logs/error.log文件
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;
}
/*
如果配置文件中没有error_log配置项，在配置文件解析完后调用errlog模块的ngx_log_open_default函数将日志等级默认置为NGX_LOG_ERR，
日志文件设置为NGX_ERROR_LOG_PATH（该宏是在configure时指定的）。
*/
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);
/* 配置文件中不存在生效的error_log配置项时new_log.file就为空 */
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;
}
//处理命令行选项
static ngx_int_t
ngx_process_options(ngx_cycle_t *cycle)
{
u_char *p;
size_t len;
if (ngx_prefix) { //有路径前缀
len = ngx_strlen(ngx_prefix); //计算长度
p = ngx_prefix;
if (len && !ngx_path_separator(p[len - 1])) { //长度大于0且最后一个字符不是/
p = ngx_pnalloc(cycle->pool, len + 1); //构造新的长度
if (p == NULL) {
return NGX_ERROR;
}
ngx_memcpy(p, ngx_prefix, len);
p[len++] = '/'; //最后一个置为/
}
cycle->conf_prefix.len = len; //配置路径前缀
cycle->conf_prefix.data = p; //指向
cycle->prefix.len = len;
cycle->prefix.data = p;
} else {
#ifndef NGX_PREFIX
p = ngx_pnalloc(cycle->pool, NGX_MAX_PATH);
if (p == NULL) {
return NGX_ERROR;
}
//从当前目录
if (ngx_getcwd(p, NGX_MAX_PATH) == 0) {
ngx_log_stderr(ngx_errno, "[emerg]: " ngx_getcwd_n " failed");
return NGX_ERROR;
}
len = ngx_strlen(p);
p[len++] = '/';
cycle->conf_prefix.len = len;
cycle->conf_prefix.data = p;
cycle->prefix.len = len;
cycle->prefix.data = p;
#else
#ifdef NGX_CONF_PREFIX
ngx_str_set(&cycle->conf_prefix, NGX_CONF_PREFIX);
#else
ngx_str_set(&cycle->conf_prefix, NGX_PREFIX);
#endif
ngx_str_set(&cycle->prefix, NGX_PREFIX);
#endif
}
//加上conf设置
if (ngx_conf_file) {
cycle->conf_file.len = ngx_strlen(ngx_conf_file);
cycle->conf_file.data = ngx_conf_file;
} else {
ngx_str_set(&cycle->conf_file, NGX_CONF_PATH);
}
if (ngx_conf_full_name(cycle, &cycle->conf_file, 0) != NGX_OK) {
return NGX_ERROR;
}
for (p = cycle->conf_file.data + cycle->conf_file.len - 1;
p > cycle->conf_file.data;
p--)
{
if (ngx_path_separator(*p)) {
cycle->conf_prefix.len = p - ngx_cycle->conf_file.data + 1;
cycle->conf_prefix.data = ngx_cycle->conf_file.data;
break;
}
}
//命令行选项找到
if (ngx_conf_params) {
cycle->conf_param.len = ngx_strlen(ngx_conf_params);
cycle->conf_param.data = ngx_conf_params;
}
if (ngx_test_config) {
cycle->log->log_level = NGX_LOG_INFO;
}
return NGX_OK;
}
/*将nginx服务器启动时的参数保存到init_cycle结构的相应成员中*/
static ngx_int_t
ngx_process_options(ngx_cycle_t *cycle)
{
u_char *p;
size_t len;
//ngx_prefix 表示nginx安装路径
if (ngx_prefix) { //不走这里
len = ngx_strlen(ngx_prefix);//活取nginx_prefix的长度
p = ngx_prefix;
if (!ngx_path_separator(*p)) {
p = ngx_pnalloc(cycle->pool, len + 1);
if (p == NULL) {
return NGX_ERROR;
}
ngx_memcpy(p, ngx_prefix, len);
p[len++] = '/';
}
cycle->conf_prefix.len = len;
cycle->conf_prefix.data = p;
cycle->prefix.len = len;
cycle->prefix.data = p;
} else {
#ifndef NGX_PREFIX
p = ngx_pnalloc(cycle->pool, NGX_MAX_PATH);
if (p == NULL) {
return NGX_ERROR;
}
if (ngx_getcwd(p, NGX_MAX_PATH) == 0) {
ngx_log_stderr(ngx_errno, "[emerg]: " ngx_getcwd_n " failed");
return NGX_ERROR;
}
len = ngx_strlen(p);
p[len++] = '/';
cycle->conf_prefix.len = len;
cycle->conf_prefix.data = p;
cycle->prefix.len = len;
cycle->prefix.data = p;
#else
#ifdef NGX_CONF_PREFIX
ngx_str_set(&cycle->conf_prefix, NGX_CONF_PREFIX);//直接执行到这里 NGX_CONF_PREFIX=conf/ p *&cycle->conf_prefix->data
#else
ngx_str_set(&cycle->conf_prefix, NGX_PREFIX);
#endif
ngx_str_set(&cycle->prefix, NGX_PREFIX);///usr/local/nginx
#endif
}
if (ngx_conf_file) {///home/colamachine/git/nginx-1.0.14_comment/conf/nginx.conf
cycle->conf_file.len = ngx_strlen(ngx_conf_file);///home/colamachine/git/nginx-1.0.14_comment/conf/nginx.conf
cycle->conf_file.data = ngx_conf_file;
} else {
ngx_str_set(&cycle->conf_file, NGX_CONF_PATH);
}
//测试文件路径是不是/开头
if (ngx_conf_full_name(cycle, &cycle->conf_file, 0) != NGX_OK) {
return NGX_ERROR;
}
for (p = cycle->conf_file.data + cycle->conf_file.len - 1;
p > cycle->conf_file.data;
p--)//从后往前逐个遍历
{
if (ngx_path_separator(*p)) { // 将config_file路径按照分隔符“/”分割
cycle->conf_prefix.len = p - ngx_cycle->conf_file.data + 1;
//nginx.conf 字符串和前面的/home/cola.../nginx-1.0.1comment/conf/分开 conf_preix保存后者
cycle->conf_prefix.data = ngx_cycle->conf_file.data;
break;
}
}
if (ngx_conf_params) {//略过
cycle->conf_param.len = ngx_strlen(ngx_conf_params);
cycle->conf_param.data = ngx_conf_params;
}
if (ngx_test_config) {
cycle->log->log_level = NGX_LOG_INFO;
}
return NGX_OK;
}
static ngx_int_t
ngx_process_options(ngx_cycle_t *cycle)
{
u_char *p;
size_t len;
// 若ngx_prefix 值存在，则在函数ngx_get_options中被设置
if (ngx_prefix) {
len = ngx_strlen(ngx_prefix);
p = ngx_prefix;
// 判断ngx_prefix是否以 / 开头(ngx_prefix的第一个字符是否为/)
// ngx_path_separator 位于 os/unix/ngx_files.h 文件中的宏定义
if (!ngx_path_separator(*p)) {
p = ngx_pnalloc(cycle->pool, len + 1);
if (p == NULL) {
return NGX_ERROR;
}
ngx_memcpy(p, ngx_prefix, len);
p[len++] = '/';
}
//设置nginx的安装路径和配置文件的路径为相同值
cycle->conf_prefix.len = len;
cycle->conf_prefix.data = p;
cycle->prefix.len = len;
cycle->prefix.data = p;
} else {
#ifndef NGX_PREFIX
p = ngx_pnalloc(cycle->pool, NGX_MAX_PATH);
if (p == NULL) {
return NGX_ERROR;
}
if (ngx_getcwd(p, NGX_MAX_PATH) == 0) {
ngx_log_stderr(ngx_errno, "[emerg]: " ngx_getcwd_n " failed");
return NGX_ERROR;
}
len = ngx_strlen(p);
p[len++] = '/';
cycle->conf_prefix.len = len;
cycle->conf_prefix.data = p;
cycle->prefix.len = len;
cycle->prefix.data = p;
#else
#ifdef NGX_CONF_PREFIX
ngx_str_set(&cycle->conf_prefix, NGX_CONF_PREFIX);
#else
ngx_str_set(&cycle->conf_prefix, NGX_PREFIX);
#endif
ngx_str_set(&cycle->prefix, NGX_PREFIX);
#endif
} //else end
// nginx -c nginx.conf
if (ngx_conf_file) {
cycle->conf_file.len = ngx_strlen(ngx_conf_file);
cycle->conf_file.data = ngx_conf_file;
} else {
// ngx_str_set 位于ngx_string.h 文件中，将NGX_CONF_PATH所对应的字符窜复制给conf_file
// NGX_CONF_PATH 在config是指定
ngx_str_set(&cycle->conf_file, NGX_CONF_PATH);
}
// 对 &cycle->conf_file 进行赋值
// ngx_conf_full_name根据nginx的安装路径perfix活conf_prefix对conf_file 设置完整的配置文件路径
if (ngx_conf_full_name(cycle, &cycle->conf_file, 0) != NGX_OK) {
return NGX_ERROR;
}
// p 设置为conf_file.data地址的末端。减去1的原因是在ngx_conf_full_name中对末尾设置了\0
for (p = cycle->conf_file.data + cycle->conf_file.len - 1;
p > cycle->conf_file.data;
p--)
{
if (ngx_path_separator(*p)) { // 将config_file路径按照分最后一个“/”分出conf_prefix
cycle->conf_prefix.len = p - ngx_cycle->conf_file.data + 1;
cycle->conf_prefix.data = ngx_cycle->conf_file.data;
break;
}
}
// nginx -g "daemon off"
if (ngx_conf_params) {
cycle->conf_param.len = ngx_strlen(ngx_conf_params);
cycle->conf_param.data = ngx_conf_params;
}
// nginx -t
if (ngx_test_config) {
cycle->log->log_level = NGX_LOG_INFO;
}
return NGX_OK;
}
/*
* 处理命令行的可选参数，将结果填入cycle的相应字段
*/
static ngx_int_t
ngx_process_options(ngx_cycle_t *cycle)
{
u_char *p;
size_t len;
if (ngx_prefix) {
len = ngx_strlen(ngx_prefix);
p = ngx_prefix;
/* 判断ngx_prefix是否以'/'结尾，没有则加上 */
if (len && !ngx_path_separator(p[len - 1])) {
p = ngx_pnalloc(cycle->pool, len + 1);
if (p == NULL) {
return NGX_ERROR;
}
ngx_memcpy(p, ngx_prefix, len);
p[len++] = '/';
}
cycle->conf_prefix.len = len;
cycle->conf_prefix.data = p;
cycle->prefix.len = len;
cycle->prefix.data = p;
} else {
/* build 时在configure过程是生成的宏，值为 --prefix= 指定的路径
* 未指定，则使用默认值 "/usr/local/nginx/"
*/
#ifndef NGX_PREFIX
p = ngx_pnalloc(cycle->pool, NGX_MAX_PATH);
if (p == NULL) {
return NGX_ERROR;
}
/* 获取进程工作路径 */
if (ngx_getcwd(p, NGX_MAX_PATH) == 0) {
ngx_log_stderr(ngx_errno, "[emerg]: " ngx_getcwd_n " failed");
return NGX_ERROR;
}
len = ngx_strlen(p);
p[len++] = '/';
cycle->conf_prefix.len = len;
cycle->conf_prefix.data = p;
cycle->prefix.len = len;
cycle->prefix.data = p;
#else
/* build 时在configure过程是生成的宏，值为 --conf-path= 指定的文件所在目录
* 未指定，则使用默认值 "conf/"
*/
#ifdef NGX_CONF_PREFIX
ngx_str_set(&cycle->conf_prefix, NGX_CONF_PREFIX);
#else
ngx_str_set(&cycle->conf_prefix, NGX_PREFIX);
#endif
ngx_str_set(&cycle->prefix, NGX_PREFIX);
#endif
}
if (ngx_conf_file) {
cycle->conf_file.len = ngx_strlen(ngx_conf_file);
cycle->conf_file.data = ngx_conf_file;
} else {
/* build 时在configure过程是生成的宏，值为 --conf-path=
* 未指定，则使用默认值 "conf/nginx.conf"
*/
ngx_str_set(&cycle->conf_file, NGX_CONF_PATH);
}
if (ngx_conf_full_name(cycle, &cycle->conf_file, 0) != NGX_OK) {
return NGX_ERROR;
}
/*
* 从配置文件全路径中截取得到conf_prefix
*/
for (p = cycle->conf_file.data + cycle->conf_file.len - 1;
p > cycle->conf_file.data;
p--)
{
if (ngx_path_separator(*p)) {
cycle->conf_prefix.len = p - ngx_cycle->conf_file.data + 1;
cycle->conf_prefix.data = ngx_cycle->conf_file.data;
break;
}
}
if (ngx_conf_params) {
cycle->conf_param.len = ngx_strlen(ngx_conf_params);
cycle->conf_param.data = ngx_conf_params;
}
if (ngx_test_config) {
cycle->log->log_level = NGX_LOG_INFO;
}
return NGX_OK;
}
static ngx_int_t
ngx_process_options(ngx_cycle_t *cycle)
{
u_char *p;
size_t len;
// 下面这段代码其实就是获取nginx conf 路径
if (ngx_prefix) {
len = ngx_strlen(ngx_prefix);
p = ngx_prefix;
if (len && !ngx_path_separator(p[len - 1])) {
p = ngx_pnalloc(cycle->pool, len + 1);
if (p == NULL) {
return NGX_ERROR;
}
ngx_memcpy(p, ngx_prefix, len);
p[len++] = '/';
}
cycle->conf_prefix.len = len;
cycle->conf_prefix.data = p;
cycle->prefix.len = len;
cycle->prefix.data = p;
} else {
#ifndef NGX_PREFIX
p = ngx_pnalloc(cycle->pool, NGX_MAX_PATH);
if (p == NULL) {
return NGX_ERROR;
}
if (ngx_getcwd(p, NGX_MAX_PATH) == 0) {
ngx_log_stderr(ngx_errno, "[emerg]: " ngx_getcwd_n " failed");
return NGX_ERROR;
}
len = ngx_strlen(p);
p[len++] = '/';
cycle->conf_prefix.len = len;
cycle->conf_prefix.data = p;
cycle->prefix.len = len;
cycle->prefix.data = p;
#else
#ifdef NGX_CONF_PREFIX
ngx_str_set(&cycle->conf_prefix, NGX_CONF_PREFIX);
#else
ngx_str_set(&cycle->conf_prefix, NGX_PREFIX);
#endif
ngx_str_set(&cycle->prefix, NGX_PREFIX);
#endif
}
if (ngx_conf_file) {
cycle->conf_file.len = ngx_strlen(ngx_conf_file);
cycle->conf_file.data = ngx_conf_file;
} else {
ngx_str_set(&cycle->conf_file, NGX_CONF_PATH);
}
// full path
if (ngx_conf_full_name(cycle, &cycle->conf_file, 0) != NGX_OK) {
return NGX_ERROR;
}
// back --> front
for (p = cycle->conf_file.data + cycle->conf_file.len - 1;
p > cycle->conf_file.data;
p--)
{
if (ngx_path_separator(*p)) {
// 获取conf 前缀eg： cycle->conf_file = /home/test/nginx/conf/nginx.conf
// 则 cycle->conf_prefix = /home/test/nginx/conf/
cycle->conf_prefix.len = p - ngx_cycle->conf_file.data + 1;
cycle->conf_prefix.data = ngx_cycle->conf_file.data;
break;
}
}
if (ngx_conf_params) {
cycle->conf_param.len = ngx_strlen(ngx_conf_params);
cycle->conf_param.data = ngx_conf_params;
}
if (ngx_test_config) {
cycle->log->log_level = NGX_LOG_INFO;
}
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; // 设置nginx_errlog的path，这个宏在ngx_auto_config.h中有定义“logs/error.log”
/*
* 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; //如果没有设置日志输出文件，就默认采用标准错误输出流, 这里几乎只是做一个预防性的代码
return &ngx_log;
}
p = NULL;
#if (NGX_WIN32)
if (name[1] != ':') {
#else
if (name[0] != '/') {
#endif
// 检查编译的时候是否有prefix，如果有prefix就将log路径串起来
if (prefix) {
plen = ngx_strlen(prefix);
} else {
#ifdef NGX_PREFIX
prefix = (u_char *) NGX_PREFIX;
plen = ngx_strlen(prefix);
#else
plen = 0;
#endif
}
// 检查是否有路径前缀，如有就加到前面，使用绝对路径上的日志文件，如果没有，使用当前目录下的日志文件
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;
}
}
// 只写追加方式打开，如果不存在则创建， 这里也是windows 和unix 分开走
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;
}
