267 lines
6.7 KiB
C
267 lines
6.7 KiB
C
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/*
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* Copyright (C) Igor Sysoev
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*/
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#include <ngx_config.h>
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#include <ngx_core.h>
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#include <ngx_http.h>
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static char *ngx_http_flv(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
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static ngx_command_t ngx_http_flv_commands[] = {
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{ ngx_string("flv"),
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NGX_HTTP_LOC_CONF|NGX_CONF_NOARGS,
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ngx_http_flv,
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0,
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0,
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NULL },
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ngx_null_command
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};
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static u_char ngx_flv_header[] = "FLV\x1\x1\0\0\0\x9\0\0\0\x9";
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static ngx_http_module_t ngx_http_flv_module_ctx = {
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NULL, /* preconfiguration */
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NULL, /* postconfiguration */
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NULL, /* create main configuration */
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NULL, /* init main configuration */
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NULL, /* create server configuration */
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NULL, /* merge server configuration */
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NULL, /* create location configuration */
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NULL /* merge location configuration */
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};
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ngx_module_t ngx_http_flv_module = {
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NGX_MODULE_V1,
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&ngx_http_flv_module_ctx, /* module context */
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ngx_http_flv_commands, /* module directives */
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NGX_HTTP_MODULE, /* module type */
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NULL, /* init master */
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NULL, /* init module */
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NULL, /* init process */
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NULL, /* init thread */
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NULL, /* exit thread */
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NULL, /* exit process */
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NULL, /* exit master */
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NGX_MODULE_V1_PADDING
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};
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static ngx_int_t
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ngx_http_flv_handler(ngx_http_request_t *r)
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{
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u_char *p;
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off_t start, len;
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size_t root;
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ngx_fd_t fd;
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ngx_int_t rc;
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ngx_uint_t level, i;
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ngx_str_t path;
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ngx_err_t err;
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ngx_log_t *log;
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ngx_buf_t *b;
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ngx_chain_t out[2];
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ngx_file_info_t fi;
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ngx_pool_cleanup_t *cln;
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ngx_pool_cleanup_file_t *clnf;
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ngx_http_core_loc_conf_t *clcf;
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if (!(r->method & (NGX_HTTP_GET|NGX_HTTP_HEAD))) {
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return NGX_HTTP_NOT_ALLOWED;
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}
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if (r->uri.data[r->uri.len - 1] == '/') {
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return NGX_DECLINED;
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}
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/* TODO: Win32 */
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if (r->zero_in_uri) {
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return NGX_DECLINED;
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}
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rc = ngx_http_discard_body(r);
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if (rc != NGX_OK && rc != NGX_AGAIN) {
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return rc;
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}
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if (ngx_http_map_uri_to_path(r, &path, &root, 0) == NULL) {
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return NGX_HTTP_INTERNAL_SERVER_ERROR;
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}
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log = r->connection->log;
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ngx_log_debug1(NGX_LOG_DEBUG_HTTP, log, 0,
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"http flv filename: \"%s\"", path.data);
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cln = ngx_pool_cleanup_add(r->pool, sizeof(ngx_pool_cleanup_file_t));
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if (cln == NULL) {
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return NGX_HTTP_INTERNAL_SERVER_ERROR;
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}
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fd = ngx_open_file(path.data, NGX_FILE_RDONLY, NGX_FILE_OPEN, 0);
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if (fd == NGX_INVALID_FILE) {
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err = ngx_errno;
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if (err == NGX_ENOENT
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|| err == NGX_ENOTDIR
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|| err == NGX_ENAMETOOLONG)
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{
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level = NGX_LOG_ERR;
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rc = NGX_HTTP_NOT_FOUND;
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} else if (err == NGX_EACCES) {
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level = NGX_LOG_ERR;
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rc = NGX_HTTP_FORBIDDEN;
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} else {
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level = NGX_LOG_CRIT;
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rc = NGX_HTTP_INTERNAL_SERVER_ERROR;
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}
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clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
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if (rc != NGX_HTTP_NOT_FOUND || clcf->log_not_found) {
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ngx_log_error(level, log, err,
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ngx_open_file_n " \"%s\" failed", path.data);
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}
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return rc;
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}
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if (ngx_fd_info(fd, &fi) == NGX_FILE_ERROR) {
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ngx_log_error(NGX_LOG_CRIT, log, ngx_errno,
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ngx_fd_info_n " \"%s\" failed", path.data);
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if (ngx_close_file(fd) == NGX_FILE_ERROR) {
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ngx_log_error(NGX_LOG_ALERT, log, ngx_errno,
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ngx_close_file_n " \"%s\" failed", path.data);
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}
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return NGX_HTTP_INTERNAL_SERVER_ERROR;
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}
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if (!ngx_is_file(&fi)) {
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if (ngx_close_file(fd) == NGX_FILE_ERROR) {
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ngx_log_error(NGX_LOG_ALERT, log, ngx_errno,
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ngx_close_file_n " \"%s\" failed", path.data);
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}
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return NGX_DECLINED;
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}
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start = 0;
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len = ngx_file_size(&fi);
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i = 1;
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if (r->args.len) {
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p = (u_char *) ngx_strnstr(r->args.data, "start=", r->args.len);
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if (p) {
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p += 6;
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start = ngx_atoof(p, r->args.len - (p - r->args.data));
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if (start == NGX_ERROR || start >= len) {
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start = 0;
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}
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if (start) {
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len = sizeof(ngx_flv_header) - 1 + len - start;
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i = 0;
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}
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}
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}
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log->action = "sending flv to client";
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cln->handler = ngx_pool_cleanup_file;
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clnf = cln->data;
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clnf->fd = fd;
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clnf->name = path.data;
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clnf->log = r->pool->log;
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r->headers_out.status = NGX_HTTP_OK;
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r->headers_out.content_length_n = len;
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r->headers_out.last_modified_time = ngx_file_mtime(&fi);
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if (ngx_http_set_content_type(r) != NGX_OK) {
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return NGX_HTTP_INTERNAL_SERVER_ERROR;
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}
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if (i == 0) {
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b = ngx_pcalloc(r->pool, sizeof(ngx_buf_t));
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if (b == NULL) {
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return NGX_HTTP_INTERNAL_SERVER_ERROR;
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}
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b->pos = ngx_flv_header;
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b->last = ngx_flv_header + sizeof(ngx_flv_header) - 1;
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b->memory = 1;
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out[0].buf = b;
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out[0].next = &out[1];
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} else {
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r->allow_ranges = 1;
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}
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b = ngx_pcalloc(r->pool, sizeof(ngx_buf_t));
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if (b == NULL) {
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return NGX_HTTP_INTERNAL_SERVER_ERROR;
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}
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b->file = ngx_pcalloc(r->pool, sizeof(ngx_file_t));
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if (b->file == NULL) {
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return NGX_HTTP_INTERNAL_SERVER_ERROR;
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}
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rc = ngx_http_send_header(r);
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if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) {
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return rc;
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}
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b->file_pos = start;
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b->file_last = ngx_file_size(&fi);
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b->in_file = b->file_last ? 1: 0;
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b->last_buf = 1;
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b->last_in_chain = 1;
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b->file->fd = fd;
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b->file->name = path;
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b->file->log = log;
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out[1].buf = b;
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out[1].next = NULL;
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return ngx_http_output_filter(r, &out[i]);
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}
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static char *
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ngx_http_flv(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
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{
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ngx_http_core_loc_conf_t *clcf;
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clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module);
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clcf->handler = ngx_http_flv_handler;
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return NGX_CONF_OK;
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}
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