ngx_int_t
ngx_http_vod_send_response(ngx_http_request_t *r, ngx_str_t *response, ngx_str_t* content_type)
{
ngx_chain_t out;
ngx_int_t rc;
ngx_buf_t* b;
if (!r->header_sent)
{
// set the content type
r->headers_out.content_type = *content_type;
r->headers_out.content_type_len = content_type->len;
// set the status line
r->headers_out.status = NGX_HTTP_OK;
r->headers_out.content_length_n = response->len;
rc = ngx_http_set_etag(r);
if (rc != NGX_OK)
{
ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"ngx_http_vod_send_response: ngx_http_set_etag failed");
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
// send the headers
rc = ngx_http_send_header(r);
if (rc == NGX_ERROR || rc > NGX_OK)
{
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"ngx_http_vod_send_response: ngx_http_send_header failed %i", rc);
return rc;
}
}
if (r->header_only || r->method == NGX_HTTP_HEAD)
{
return NGX_OK;
}
// wrap the response with ngx_buf_t
b = ngx_calloc_buf(r->pool);
if (b == NULL)
{
ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"ngx_http_vod_send_response: ngx_pcalloc failed");
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
b->pos = response->data;
b->last = response->data + response->len;
if (response->len > 0)
{
b->temporary = 1;
}
b->last_buf = 1; // this is the last buffer in the buffer chain
// attach the buffer to the chain
out.buf = b;
out.next = NULL;
// send the buffer chain
rc = ngx_http_output_filter(r, &out);
if (rc != NGX_OK && rc != NGX_AGAIN)
{
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"ngx_http_vod_send_response: ngx_http_output_filter failed %i", rc);
return rc;
}
return NGX_OK;
}
static ngx_int_t
ngx_http_gzip_static_handler(ngx_http_request_t *r)
{
u_char *p;
size_t root;
ngx_str_t path;
ngx_int_t rc;
ngx_uint_t level;
ngx_log_t *log;
ngx_buf_t *b;
ngx_chain_t out;
ngx_table_elt_t *h;
ngx_open_file_info_t of;
ngx_http_core_loc_conf_t *clcf;
ngx_http_gzip_static_conf_t *gzcf;
if (!(r->method & (NGX_HTTP_GET|NGX_HTTP_HEAD))) {
return NGX_DECLINED;
}
if (r->uri.data[r->uri.len - 1] == '/') {
return NGX_DECLINED;
}
gzcf = ngx_http_get_module_loc_conf(r, ngx_http_gzip_static_module);
if (gzcf->enable == NGX_HTTP_GZIP_STATIC_OFF) {
return NGX_DECLINED;
}
if (gzcf->enable == NGX_HTTP_GZIP_STATIC_ON) {
rc = ngx_http_gzip_ok(r);
} else {
/* always */
rc = NGX_OK;
}
clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
if (!clcf->gzip_vary && rc != NGX_OK) {
return NGX_DECLINED;
}
log = r->connection->log;
p = ngx_http_map_uri_to_path(r, &path, &root, sizeof(".gz") - 1);
if (p == NULL) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
*p++ = '.';
*p++ = 'g';
*p++ = 'z';
*p = '\0';
path.len = p - path.data;
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, log, 0,
"http filename: \"%s\"", path.data);
ngx_memzero(&of, sizeof(ngx_open_file_info_t));
of.read_ahead = clcf->read_ahead;
of.directio = clcf->directio;
of.valid = clcf->open_file_cache_valid;
of.min_uses = clcf->open_file_cache_min_uses;
of.errors = clcf->open_file_cache_errors;
of.events = clcf->open_file_cache_events;
if (ngx_http_set_disable_symlinks(r, clcf, &path, &of) != NGX_OK) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
if (ngx_open_cached_file(clcf->open_file_cache, &path, &of, r->pool)
!= NGX_OK)
{
switch (of.err) {
case 0:
return NGX_HTTP_INTERNAL_SERVER_ERROR;
case NGX_ENOENT:
case NGX_ENOTDIR:
case NGX_ENAMETOOLONG:
return NGX_DECLINED;
case NGX_EACCES:
#if (NGX_HAVE_OPENAT)
case NGX_EMLINK:
case NGX_ELOOP:
#endif
level = NGX_LOG_ERR;
break;
default:
level = NGX_LOG_CRIT;
break;
}
ngx_log_error(level, log, of.err,
"%s \"%s\" failed", of.failed, path.data);
return NGX_DECLINED;
}
if (gzcf->enable == NGX_HTTP_GZIP_STATIC_ON) {
r->gzip_vary = 1;
if (rc != NGX_OK) {
return NGX_DECLINED;
}
}
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, log, 0, "http static fd: %d", of.fd);
if (of.is_dir) {
ngx_log_debug0(NGX_LOG_DEBUG_HTTP, log, 0, "http dir");
return NGX_DECLINED;
}
#if !(NGX_WIN32) /* the not regular files are probably Unix specific */
if (!of.is_file) {
ngx_log_error(NGX_LOG_CRIT, log, 0,
"\"%s\" is not a regular file", path.data);
return NGX_HTTP_NOT_FOUND;
}
#endif
r->root_tested = !r->error_page;
rc = ngx_http_discard_request_body(r);
if (rc != NGX_OK) {
return rc;
}
log->action = "sending response to client";
r->headers_out.status = NGX_HTTP_OK;
r->headers_out.content_length_n = of.size;
r->headers_out.last_modified_time = of.mtime;
if (ngx_http_set_etag(r) != NGX_OK) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
if (ngx_http_set_content_type(r) != NGX_OK) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
h = ngx_list_push(&r->headers_out.headers);
if (h == NULL) {
return NGX_ERROR;
}
h->hash = 1;
ngx_str_set(&h->key, "Content-Encoding");
ngx_str_set(&h->value, "gzip");
r->headers_out.content_encoding = h;
/* we need to allocate all before the header would be sent */
b = ngx_pcalloc(r->pool, sizeof(ngx_buf_t));
if (b == NULL) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
b->file = ngx_pcalloc(r->pool, sizeof(ngx_file_t));
if (b->file == NULL) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
rc = ngx_http_send_header(r);
if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) {
return rc;
}
b->file_pos = 0;
b->file_last = of.size;
b->in_file = b->file_last ? 1 : 0;
b->last_buf = (r == r->main) ? 1 : 0;
b->last_in_chain = 1;
b->file->fd = of.fd;
b->file->name = path;
b->file->log = log;
b->file->directio = of.is_directio;
out.buf = b;
out.next = NULL;
return ngx_http_output_filter(r, &out);
}
/* 静态页面处理函数 */
static ngx_int_t
ngx_http_static_handler(ngx_http_request_t *r)
{
u_char *last, *location;
size_t root, len;
ngx_str_t path;
ngx_int_t rc;
ngx_uint_t level;
ngx_log_t *log;
ngx_buf_t *b;
ngx_chain_t out;
ngx_open_file_info_t of;
ngx_http_core_loc_conf_t *clcf;
if (!(r->method & (NGX_HTTP_GET|NGX_HTTP_HEAD|NGX_HTTP_POST))) {
return NGX_HTTP_NOT_ALLOWED;
}
if (r->uri.data[r->uri.len - 1] == '/') {
return NGX_DECLINED;
}
log = r->connection->log;
/*
* ngx_http_map_uri_to_path() allocates memory for terminating '\0'
* so we do not need to reserve memory for '/' for possible redirect
*/
last = ngx_http_map_uri_to_path(r, &path, &root, 0);
if (last == NULL) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
path.len = last - path.data;
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, log, 0,
"http filename: \"%s\"", path.data);
clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
ngx_memzero(&of, sizeof(ngx_open_file_info_t));
of.read_ahead = clcf->read_ahead;
of.directio = clcf->directio;
of.valid = clcf->open_file_cache_valid;
of.min_uses = clcf->open_file_cache_min_uses;
of.errors = clcf->open_file_cache_errors;
of.events = clcf->open_file_cache_events;
if (ngx_http_set_disable_symlinks(r, clcf, &path, &of) != NGX_OK) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
if (ngx_open_cached_file(clcf->open_file_cache, &path, &of, r->pool)
!= NGX_OK)
{
switch (of.err) {
case 0:
return NGX_HTTP_INTERNAL_SERVER_ERROR;
case NGX_ENOENT:
case NGX_ENOTDIR:
case NGX_ENAMETOOLONG:
level = NGX_LOG_ERR;
rc = NGX_HTTP_NOT_FOUND;
break;
case NGX_EACCES:
#if (NGX_HAVE_OPENAT)
case NGX_EMLINK:
case NGX_ELOOP:
#endif
level = NGX_LOG_ERR;
rc = NGX_HTTP_FORBIDDEN;
break;
default:
level = NGX_LOG_CRIT;
rc = NGX_HTTP_INTERNAL_SERVER_ERROR;
break;
}
if (rc != NGX_HTTP_NOT_FOUND || clcf->log_not_found) {
ngx_log_error(level, log, of.err,
"%s \"%s\" failed", of.failed, path.data);
}
return rc;
}
r->root_tested = !r->error_page;
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, log, 0, "http static fd: %d", of.fd);
if (of.is_dir) {
ngx_log_debug0(NGX_LOG_DEBUG_HTTP, log, 0, "http dir");
ngx_http_clear_location(r);
r->headers_out.location = ngx_palloc(r->pool, sizeof(ngx_table_elt_t));
if (r->headers_out.location == NULL) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
len = r->uri.len + 1;
if (!clcf->alias && clcf->root_lengths == NULL && r->args.len == 0) {
location = path.data + clcf->root.len;
*last = '/';
} else {
if (r->args.len) {
len += r->args.len + 1;
}
location = ngx_pnalloc(r->pool, len);
if (location == NULL) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
last = ngx_copy(location, r->uri.data, r->uri.len);
*last = '/';
if (r->args.len) {
*++last = '?';
ngx_memcpy(++last, r->args.data, r->args.len);
}
}
/*
* we do not need to set the r->headers_out.location->hash and
* r->headers_out.location->key fields
*/
r->headers_out.location->value.len = len;
r->headers_out.location->value.data = location;
return NGX_HTTP_MOVED_PERMANENTLY;
}
#if !(NGX_WIN32) /* the not regular files are probably Unix specific */
if (!of.is_file) {
ngx_log_error(NGX_LOG_CRIT, log, 0,
"\"%s\" is not a regular file", path.data);
return NGX_HTTP_NOT_FOUND;
}
#endif
if (r->method == NGX_HTTP_POST) {
return NGX_HTTP_NOT_ALLOWED;
}
rc = ngx_http_discard_request_body(r);
if (rc != NGX_OK) {
return rc;
}
log->action = "sending response to client";
r->headers_out.status = NGX_HTTP_OK;
r->headers_out.content_length_n = of.size;
r->headers_out.last_modified_time = of.mtime;
if (ngx_http_set_etag(r) != NGX_OK) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
if (ngx_http_set_content_type(r) != NGX_OK) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
if (r != r->main && of.size == 0) {
return ngx_http_send_header(r);
}
r->allow_ranges = 1;
/* we need to allocate all before the header would be sent */
b = ngx_pcalloc(r->pool, sizeof(ngx_buf_t));
if (b == NULL) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
b->file = ngx_pcalloc(r->pool, sizeof(ngx_file_t));
if (b->file == NULL) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
/* 发送响应头 */
rc = ngx_http_send_header(r);
if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) {
return rc;
}
b->file_pos = 0;
b->file_last = of.size;
b->in_file = b->file_last ? 1: 0;
b->last_buf = (r == r->main) ? 1: 0;
b->last_in_chain = 1;
b->file->fd = of.fd;
b->file->name = path;
b->file->log = log;
b->file->directio = of.is_directio;
out.buf = b;
out.next = NULL;
return ngx_http_output_filter(r, &out);
}
static ngx_int_t
ngx_http_concat_handler(ngx_http_request_t *r)
{
off_t length;
size_t root, last_len;
time_t last_modified;
u_char *p, *v, *e, *last, *last_type;
ngx_int_t rc;
ngx_str_t *uri, *filename, path;
ngx_buf_t *b;
ngx_uint_t i, j, level;
ngx_flag_t timestamp;
ngx_array_t uris;
ngx_chain_t out, **last_out, *cl;
ngx_open_file_info_t of;
ngx_http_core_loc_conf_t *ccf;
ngx_http_concat_loc_conf_t *clcf;
if (r->uri.data[r->uri.len - 1] != '/') {
return NGX_DECLINED;
}
if (!(r->method & (NGX_HTTP_GET|NGX_HTTP_HEAD))) {
return NGX_DECLINED;
}
clcf = ngx_http_get_module_loc_conf(r, ngx_http_concat_module);
if (!clcf->enable) {
return NGX_DECLINED;
}
/* the length of args must be greater than or equal to 2 */
if (r->args.len < 2 || r->args.data[0] != '?') {
return NGX_DECLINED;
}
rc = ngx_http_discard_request_body(r);
if (rc != NGX_OK) {
return rc;
}
last = ngx_http_map_uri_to_path(r, &path, &root, 0);
if (last == NULL) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
path.len = last - path.data;
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"http concat root: \"%V\"", &path);
ccf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
#if (NGX_SUPPRESS_WARN)
ngx_memzero(&uris, sizeof(ngx_array_t));
#endif
if (ngx_array_init(&uris, r->pool, 8, sizeof(ngx_str_t)) != NGX_OK) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
e = r->args.data + r->args.len;
for (p = r->args.data + 1, v = p, timestamp = 0; p != e; p++) {
if (*p == ',') {
if (p == v || timestamp == 1) {
v = p + 1;
timestamp = 0;
continue;
}
rc = ngx_http_concat_add_path(r, &uris, clcf->max_files, &path,
p, v);
if (rc != NGX_OK) {
return rc;
}
v = p + 1;
} else if (*p == '?') {
if (timestamp == 1) {
v = p;
continue;
}
rc = ngx_http_concat_add_path(r, &uris, clcf->max_files, &path,
p, v);
if (rc != NGX_OK) {
return rc;
}
v = p;
timestamp = 1;
}
}
if (p - v > 0 && timestamp == 0) {
rc = ngx_http_concat_add_path(r, &uris, clcf->max_files, &path, p, v);
if (rc != NGX_OK) {
return rc;
}
}
last_modified = 0;
last_len = 0;
last_out = NULL;
b = NULL;
last_type = NULL;
length = 0;
uri = uris.elts;
for (i = 0; i < uris.nelts; i++) {
filename = uri + i;
for (j = filename->len - 1; j > 1; j--) {
if (filename->data[j] == '.' && filename->data[j - 1] != '/') {
r->exten.len = filename->len - j - 1;
r->exten.data = &filename->data[j + 1];
break;
} else if (filename->data[j] == '/') {
break;
}
}
r->headers_out.content_type.len = 0;
if (ngx_http_set_content_type(r) != NGX_OK) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
r->headers_out.content_type_lowcase = NULL;
if (ngx_http_test_content_type(r, &clcf->types) == NULL) {
return NGX_HTTP_BAD_REQUEST;
}
if (clcf->unique) { /* test if all the content types are the same */
if ((i > 0)
&& (last_len != r->headers_out.content_type_len
|| (last_type != NULL
&& r->headers_out.content_type_lowcase != NULL
&& ngx_memcmp(last_type,
r->headers_out.content_type_lowcase,
last_len) != 0)))
{
return NGX_HTTP_BAD_REQUEST;
}
last_len = r->headers_out.content_type_len;
last_type = r->headers_out.content_type_lowcase;
}
ngx_memzero(&of, sizeof(ngx_open_file_info_t));
of.read_ahead = ccf->read_ahead;
of.directio = ccf->directio;
of.valid = ccf->open_file_cache_valid;
of.min_uses = ccf->open_file_cache_min_uses;
of.errors = ccf->open_file_cache_errors;
of.events = ccf->open_file_cache_events;
if (ngx_open_cached_file(ccf->open_file_cache, filename, &of, r->pool)
!= NGX_OK)
{
switch (of.err) {
case 0:
return NGX_HTTP_INTERNAL_SERVER_ERROR;
case NGX_ENOENT:
case NGX_ENOTDIR:
case NGX_ENAMETOOLONG:
level = NGX_LOG_ERR;
rc = NGX_HTTP_NOT_FOUND;
break;
case NGX_EACCES:
level = NGX_LOG_ERR;
rc = NGX_HTTP_FORBIDDEN;
break;
default:
level = NGX_LOG_CRIT;
rc = NGX_HTTP_INTERNAL_SERVER_ERROR;
break;
}
if (rc != NGX_HTTP_NOT_FOUND || ccf->log_not_found) {
ngx_log_error(level, r->connection->log, of.err,
"%s \"%V\" failed", of.failed, filename);
}
if (clcf->ignore_file_error
&& (rc == NGX_HTTP_NOT_FOUND || rc == NGX_HTTP_FORBIDDEN))
{
continue;
}
return rc;
}
if (!of.is_file) {
ngx_log_error(NGX_LOG_CRIT, r->connection->log, ngx_errno,
"\"%V\" is not a regular file", filename);
if (clcf->ignore_file_error) {
continue;
}
return NGX_HTTP_NOT_FOUND;
}
if (of.size == 0) {
continue;
}
length += of.size;
if (last_out == NULL) {
last_modified = of.mtime;
} else {
if (of.mtime > last_modified) {
last_modified = of.mtime;
}
}
b = ngx_pcalloc(r->pool, sizeof(ngx_buf_t));
if (b == NULL) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
b->file = ngx_pcalloc(r->pool, sizeof(ngx_file_t));
if (b->file == NULL) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
b->file_pos = 0;
b->file_last = of.size;
b->in_file = b->file_last ? 1 : 0;
b->file->fd = of.fd;
b->file->name = *filename;
b->file->log = r->connection->log;
b->file->directio = of.is_directio;
if (last_out == NULL) {
out.buf = b;
last_out = &out.next;
out.next = NULL;
} else {
cl = ngx_alloc_chain_link(r->pool);
if (cl == NULL) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
cl->buf = b;
*last_out = cl;
last_out = &cl->next;
cl->next = NULL;
}
if (i + 1 == uris.nelts || clcf->delimiter.len == 0) {
continue;
}
b = ngx_pcalloc(r->pool, sizeof(ngx_buf_t));
if (b == NULL) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
b->pos = clcf->delimiter.data;
b->last = b->pos + clcf->delimiter.len;
b->memory = 1;
length += clcf->delimiter.len;
cl = ngx_alloc_chain_link(r->pool);
if (cl == NULL) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
cl->buf = b;
*last_out = cl;
last_out = &cl->next;
cl->next = NULL;
}
r->headers_out.status = NGX_HTTP_OK;
r->headers_out.content_length_n = length;
r->headers_out.last_modified_time = last_modified;
if (ngx_http_set_etag(r) != NGX_OK) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
ngx_http_weak_etag(r);
if (b == NULL) {
r->header_only = 1;
}
rc = ngx_http_send_header(r);
if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) {
return rc;
}
if (b != NULL) {
b->last_in_chain = 1;
b->last_buf = 1;
}
return ngx_http_output_filter(r, &out);
}
static ngx_int_t
ngx_http_ts_split_handler(ngx_http_request_t *r)
{
u_char *last;
size_t root;
ngx_str_t path, index_path, media_path;
ngx_str_t first, second, media_name;
ngx_int_t rc, media_seq;
ngx_uint_t media_begin, media_len;
ngx_uint_t level;
ngx_buf_t *b;
ngx_chain_t out;
ngx_open_file_info_t of;
ngx_log_t *log;
ngx_http_core_loc_conf_t *clcf;
if (!(r->method & (NGX_HTTP_GET|NGX_HTTP_HEAD|NGX_HTTP_POST))) {
return NGX_HTTP_NOT_ALLOWED;
}
if (r->uri.data[r->uri.len - 1] == '/') {
return NGX_DECLINED;
}
ngx_str_null(&media_name);
ngx_str_null(&second);
log = r->connection->log;
/*
* ngx_http_map_uri_to_path() allocates memory for terminating '\0'
* so we do not need to reserve memory for '/' for possible redirect
*/
last = ngx_http_map_uri_to_path(r, &path, &root, 0);
if (last == NULL) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
path.len = last - path.data;
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, log, 0,
"http filename: \"%s\"", path.data);
ngx_http_ts_split_rpartition(&path, &first, &second, '/');
index_path.len = first.len + sizeof("index.m3u8") + 1;
index_path.data = ngx_palloc(r->pool, index_path.len);
ngx_snprintf(index_path.data, index_path.len, "%V/index.m3u8", &first);
index_path.data[index_path.len-1] = '\0';
media_name = ngx_http_ts_split_get_media_name(&second);
media_path.len = first.len + 5 + media_name.len;
media_path.data = ngx_palloc(r->pool, media_path.len);
ngx_snprintf(media_path.data, media_path.len, "%V/%V.ts", &first,
&media_name);
media_path.data[media_path.len-1] = '\0';
media_seq = ngx_http_ts_split_get_media_seq(&second);
media_begin = 0;
media_len = 0;
if (ngx_http_ts_split_index_info(r, &index_path, media_seq, &media_begin,
&media_len) != NGX_OK) {
return NGX_ERROR;
}
clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
ngx_memzero(&of, sizeof(ngx_open_file_info_t));
of.read_ahead = clcf->read_ahead;
of.directio = clcf->directio;
of.valid = clcf->open_file_cache_valid;
of.min_uses = clcf->open_file_cache_min_uses;
of.errors = clcf->open_file_cache_errors;
of.events = clcf->open_file_cache_events;
if (ngx_http_set_disable_symlinks(r, clcf, &media_path, &of) != NGX_OK) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
if (ngx_open_cached_file(clcf->open_file_cache, &media_path, &of, r->pool)
!= NGX_OK)
{
switch (of.err) {
case 0:
return NGX_HTTP_INTERNAL_SERVER_ERROR;
case NGX_ENOENT:
case NGX_ENOTDIR:
case NGX_ENAMETOOLONG:
level = NGX_LOG_ERR;
rc = NGX_HTTP_NOT_FOUND;
break;
case NGX_EACCES:
#if (NGX_HAVE_OPENAT)
case NGX_EMLINK:
case NGX_ELOOP:
#endif
level = NGX_LOG_ERR;
rc = NGX_HTTP_FORBIDDEN;
break;
default:
level = NGX_LOG_CRIT;
rc = NGX_HTTP_INTERNAL_SERVER_ERROR;
break;
}
if (rc != NGX_HTTP_NOT_FOUND || clcf->log_not_found) {
ngx_log_error(level, log, of.err,
"%s \"%s\" failed", of.failed, media_path.data);
}
return rc;
}
r->root_tested = !r->error_page;
#if !(NGX_WIN32) /* the not regular files are probably Unix specific */
if (!of.is_file) {
ngx_log_error(NGX_LOG_CRIT, log, 0,
"\"%s\" is not a regular file", path.data);
return NGX_HTTP_NOT_FOUND;
}
#endif
if (r->method & NGX_HTTP_POST) {
return NGX_HTTP_NOT_ALLOWED;
}
rc = ngx_http_discard_request_body(r);
if (rc != NGX_OK) {
return rc;
}
log->action = "sending response to client";
r->headers_out.status = NGX_HTTP_OK;
r->headers_out.content_length_n = media_len;
if (ngx_http_set_etag(r) != NGX_OK) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
if (ngx_http_set_content_type(r) != NGX_OK) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
if (r != r->main && of.size == 0) {
return ngx_http_send_header(r);
}
/* we need to allocate all before the header would be sent */
b = ngx_pcalloc(r->pool, sizeof(ngx_buf_t));
if (b == NULL) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
b->file = ngx_pcalloc(r->pool, sizeof(ngx_file_t));
if (b->file == NULL) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
rc = ngx_http_send_header(r);
if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) {
return rc;
}
b->file_pos = media_begin;
b->file_last = media_begin + media_len;
b->in_file = b->file_last ? 1: 0;
b->last_buf = (r == r->main) ? 1: 0;
b->last_in_chain = 1;
b->file->fd = of.fd;
b->file->name = media_path;
b->file->log = log;
b->file->directio = of.is_directio;
out.buf = b;
out.next = NULL;
return ngx_http_output_filter(r, &out);
}
static int
command_sendfile(ClientData clientData, Tcl_Interp *interp, int objc,
Tcl_Obj *const objv[])
{
ngx_buf_t *b;
ngx_chain_t out;
ngx_http_request_t *r = getrequest(clientData);
ngx_file_info_t *fi;
ngx_fd_t fd;
const char *filename;
int filename_len;
int rc;
if (objc != 2) {
Tcl_WrongNumArgs(interp, 1, objv, "file");
return TCL_ERROR;
}
filename = Tcl_GetStringFromObj(objv[1], &filename_len);
fd = ngx_open_file(filename, NGX_FILE_RDONLY, NGX_FILE_OPEN, 0);
if (fd == NGX_INVALID_FILE) {
Tcl_SetResult(interp, (char *) Tcl_PosixError(interp),
TCL_VOLATILE);
return TCL_ERROR;
}
b = ngx_calloc_buf(r->pool);
if (b == NULL) {
return TCL_ERROR;
}
b->file = ngx_pcalloc(r->pool, sizeof(ngx_file_t));
if (b->file == NULL) {
return TCL_ERROR;
}
fi = &b->file->info;
ngx_fd_info(fd, fi);
if (!r->header_sent) {
r->headers_out.content_length_n = ngx_file_size(fi);
r->headers_out.last_modified_time = ngx_file_mtime(fi);
if (ngx_http_set_etag(r) != NGX_OK) {
return TCL_ERROR;
}
ngx_http_send_header(r);
/* TODO: CHECK RETURN */
}
r->allow_ranges = 1;
b->file_pos = 0;
b->file_last = ngx_file_size(fi);
b->in_file = 1;
b->last_buf = 1;
b->last_in_chain = 1;
b->file->fd = fd;
b->file->name.data = (u_char*)filename;
b->file->name.len = filename_len;
b->file->log = r->connection->log;
out.buf = b;
out.next = NULL;
rc = ngx_http_output_filter(r, &out);
if (rc != NGX_OK) {
ngx_tcl_set_error_code(interp, rc);
return TCL_ERROR;
}
printf("ngx_http_output_filter returns %i\n", rc); fflush(stdout);
return TCL_OK;
}
//ngx_http_static_module模块主要是在nginx系统中查找uri指定文件是否存在，存在则直接返回给客户端
static ngx_int_t
ngx_http_static_handler(ngx_http_request_t *r)
{//注意:ngx_http_static_handler如果uri不是以/结尾返回，ngx_http_index_handler不以/结尾返回
//ngx_http_static_handler ngx_http_index_handler每次都要获取缓存信息stat信息，因此每次获取很可能是上一次stat执行的时候获取的信息，除非缓存过期
u_char *last, *location;
size_t root, len;
ngx_str_t path;
ngx_int_t rc;
ngx_uint_t level;
ngx_log_t *log;
ngx_buf_t *b;
ngx_chain_t out;
ngx_open_file_info_t of;
ngx_http_core_loc_conf_t *clcf;
if (!(r->method & (NGX_HTTP_GET|NGX_HTTP_HEAD|NGX_HTTP_POST))) {
return NGX_HTTP_NOT_ALLOWED;
}
if (r->uri.data[r->uri.len - 1] == '/') {
//注意:ngx_http_static_handler如果uri不是以/结尾返回，ngx_http_index_handler不以/结尾返回
return NGX_DECLINED;
}
log = r->connection->log;
/*
* ngx_http_map_uri_to_path() allocates memory for terminating '\0'
* so we do not need to reserve memory for '/' for possible redirect
*/
last = ngx_http_map_uri_to_path(r, &path, &root, 0); //通过r->uri获取整个路径或者文件绝对路径
if (last == NULL) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
path.len = last - path.data;
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, log, 0,
"http filename: \"%s\"", path.data);
clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
ngx_memzero(&of, sizeof(ngx_open_file_info_t));
of.read_ahead = clcf->read_ahead;
of.directio = clcf->directio;
of.valid = clcf->open_file_cache_valid;
of.min_uses = clcf->open_file_cache_min_uses;
of.errors = clcf->open_file_cache_errors;
of.events = clcf->open_file_cache_events;
if (ngx_http_set_disable_symlinks(r, clcf, &path, &of) != NGX_OK) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
if (ngx_open_cached_file(clcf->open_file_cache, &path, &of, r->pool)
!= NGX_OK)
{
switch (of.err) {
case 0:
return NGX_HTTP_INTERNAL_SERVER_ERROR;
case NGX_ENOENT:
case NGX_ENOTDIR:
case NGX_ENAMETOOLONG:
level = NGX_LOG_ERR;
rc = NGX_HTTP_NOT_FOUND;
break;
case NGX_EACCES:
#if (NGX_HAVE_OPENAT)
case NGX_EMLINK:
case NGX_ELOOP:
#endif
level = NGX_LOG_ERR;
rc = NGX_HTTP_FORBIDDEN;
break;
default:
level = NGX_LOG_CRIT;
rc = NGX_HTTP_INTERNAL_SERVER_ERROR;
break;
}
/*
如果文件不存在，则返回出去后会结束请求
2016/02/16 10:27:36[ ngx_http_static_handler, 139] [error] 19131#19131: *1 open() "/var/yyz/www/ttt/xx.html" failed (2: No such file or directory), client: 10.2.13.167, server: localhost, request: "GET / HTTP/1.1", host: "10.2.13.167"
2016/02/16 10:27:36[ ngx_http_finalize_request, 2598] [debug] 19131#19131: *1 http finalize request rc: 404, "/ttt/xx.html?" a:1, c:2
*/
if (rc != NGX_HTTP_NOT_FOUND || clcf->log_not_found) {
ngx_log_error(level, log, of.err,
"%s \"%s\" failed", of.failed, path.data);
}
return rc;
}
r->root_tested = !r->error_page;
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, log, 0, "http static fd: %d", of.fd);
if (of.is_dir) {
ngx_log_debug0(NGX_LOG_DEBUG_HTTP, log, 0, "http dir");
ngx_http_clear_location(r);
r->headers_out.location = ngx_palloc(r->pool, sizeof(ngx_table_elt_t));
if (r->headers_out.location == NULL) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
len = r->uri.len + 1;
if (!clcf->alias && clcf->root_lengths == NULL && r->args.len == 0) {
location = path.data + clcf->root.len;
*last = '/';
} else {
if (r->args.len) {
len += r->args.len + 1;
}
location = ngx_pnalloc(r->pool, len);
if (location == NULL) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
last = ngx_copy(location, r->uri.data, r->uri.len);
*last = '/';
if (r->args.len) {
*++last = '?';
ngx_memcpy(++last, r->args.data, r->args.len);
}
}
/*
* we do not need to set the r->headers_out.location->hash and
* r->headers_out.location->key fields
*/
r->headers_out.location->value.len = len;
r->headers_out.location->value.data = location;
return NGX_HTTP_MOVED_PERMANENTLY;
}
#if !(NGX_WIN32) /* the not regular files are probably Unix specific */
if (!of.is_file) {
ngx_log_error(NGX_LOG_CRIT, log, 0,
"\"%s\" is not a regular file", path.data);
return NGX_HTTP_NOT_FOUND;
}
#endif
if (r->method & NGX_HTTP_POST) {
return NGX_HTTP_NOT_ALLOWED;
}
rc = ngx_http_discard_request_body(r);
if (rc != NGX_OK) {
return rc;
}
log->action = "sending response to client";
r->headers_out.status = NGX_HTTP_OK;
r->headers_out.content_length_n = of.size;
r->headers_out.last_modified_time = of.mtime; //文件最后被修改的时间
if (ngx_http_set_etag(r) != NGX_OK) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
if (ngx_http_set_content_type(r) != NGX_OK) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
if (r != r->main && of.size == 0) {
return ngx_http_send_header(r);
}
r->allow_ranges = 1;
/* we need to allocate all before the header would be sent */
b = ngx_pcalloc(r->pool, sizeof(ngx_buf_t));
if (b == NULL) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
b->file = ngx_pcalloc(r->pool, sizeof(ngx_file_t));
if (b->file == NULL) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
rc = ngx_http_send_header(r);
if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) {
return rc;
}
b->file_pos = 0;
b->file_last = of.size;
b->in_file = b->file_last ? 1: 0;
b->last_buf = (r == r->main) ? 1: 0;
b->last_in_chain = 1;
b->file->fd = of.fd;
b->file->name = path;
b->file->log = log;
b->file->directio = of.is_directio; //注意这里如果文件大小大于direction设置，则置1，后面会使能direct I/O方式,见ngx_directio_on
out.buf = b;
out.next = NULL;
return ngx_http_output_filter(r, &out);
}
