| |
| /* |
| * Copyright (C) Igor Sysoev |
| * Copyright (C) Nginx, Inc. |
| */ |
| |
| #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, /* preconfiguration */ |
| NULL, /* postconfiguration */ |
| |
| NULL, /* create main configuration */ |
| NULL, /* init main configuration */ |
| |
| NULL, /* create server configuration */ |
| NULL, /* merge server configuration */ |
| |
| NULL, /* create location configuration */ |
| NULL /* merge location configuration */ |
| }; |
| |
| |
| ngx_module_t ngx_http_flv_module = { |
| NGX_MODULE_V1, |
| &ngx_http_flv_module_ctx, /* module context */ |
| ngx_http_flv_commands, /* module directives */ |
| NGX_HTTP_MODULE, /* module type */ |
| NULL, /* init master */ |
| NULL, /* init module */ |
| NULL, /* init process */ |
| NULL, /* init thread */ |
| NULL, /* exit thread */ |
| NULL, /* exit process */ |
| NULL, /* exit master */ |
| 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_calloc_buf(r->pool); |
| 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_calloc_buf(r->pool); |
| 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; |
| } |