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src/http/modules/ngx_http_flv_module.c - nginx-1.7.10
Global variables defined
Functions defined
Source code
- #include <ngx_config.h>
- #include <ngx_core.h>
- #include <ngx_http.h>
- static char *ngx_http_flv(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
- static ngx_command_t ngx_http_flv_commands[] = {
- { ngx_string("flv"),
- NGX_HTTP_LOC_CONF|NGX_CONF_NOARGS,
- ngx_http_flv,
- 0,
- 0,
- NULL },
- ngx_null_command
- };
- static u_char ngx_flv_header[] = "FLV\x1\x5\0\0\0\x9\0\0\0\0";
- static ngx_http_module_t ngx_http_flv_module_ctx = {
- NULL,
- NULL,
- NULL,
- NULL,
- NULL,
- NULL,
- NULL,
- NULL
- };
- ngx_module_t ngx_http_flv_module = {
- NGX_MODULE_V1,
- &ngx_http_flv_module_ctx,
- ngx_http_flv_commands,
- NGX_HTTP_MODULE,
- NULL,
- NULL,
- NULL,
- NULL,
- NULL,
- NULL,
- NULL,
- NGX_MODULE_V1_PADDING
- };
- static ngx_int_t
- ngx_http_flv_handler(ngx_http_request_t *r)
- {
- u_char *last;
- off_t start, len;
- size_t root;
- ngx_int_t rc;
- ngx_uint_t level, i;
- ngx_str_t path, value;
- ngx_log_t *log;
- ngx_buf_t *b;
- ngx_chain_t out[2];
- ngx_open_file_info_t of;
- ngx_http_core_loc_conf_t *clcf;
- if (!(r->method & (NGX_HTTP_GET|NGX_HTTP_HEAD))) {
- return NGX_HTTP_NOT_ALLOWED;
- }
- if (r->uri.data[r->uri.len - 1] == '/') {
- 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;
- }
- log = r->connection->log;
- path.len = last - path.data;
- ngx_log_debug1(NGX_LOG_DEBUG_HTTP, log, 0,
- "http flv filename: \"%V\"", &path);
- 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;
- }
- if (!of.is_file) {
- if (ngx_close_file(of.fd) == NGX_FILE_ERROR) {
- ngx_log_error(NGX_LOG_ALERT, log, ngx_errno,
- ngx_close_file_n " \"%s\" failed", path.data);
- }
- return NGX_DECLINED;
- }
- r->root_tested = !r->error_page;
- start = 0;
- len = of.size;
- i = 1;
- if (r->args.len) {
- if (ngx_http_arg(r, (u_char *) "start", 5, &value) == NGX_OK) {
- start = ngx_atoof(value.data, value.len);
- if (start == NGX_ERROR || start >= len) {
- start = 0;
- }
- if (start) {
- len = sizeof(ngx_flv_header) - 1 + len - start;
- i = 0;
- }
- }
- }
- log->action = "sending flv to client";
- r->headers_out.status = NGX_HTTP_OK;
- r->headers_out.content_length_n = len;
- 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 (i == 0) {
- b = ngx_pcalloc(r->pool, sizeof(ngx_buf_t));
- if (b == NULL) {
- return NGX_HTTP_INTERNAL_SERVER_ERROR;
- }
- b->pos = ngx_flv_header;
- b->last = ngx_flv_header + sizeof(ngx_flv_header) - 1;
- b->memory = 1;
- out[0].buf = b;
- out[0].next = &out[1];
- }
- 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;
- }
- r->allow_ranges = 1;
- rc = ngx_http_send_header(r);
- if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) {
- return rc;
- }
- b->file_pos = start;
- 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[1].buf = b;
- out[1].next = NULL;
- return ngx_http_output_filter(r, &out[i]);
- }
- static char *
- ngx_http_flv(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
- {
- ngx_http_core_loc_conf_t *clcf;
- clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module);
- clcf->handler = ngx_http_flv_handler;
- return NGX_CONF_OK;
- }
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