| |
| /* |
| * Copyright (C) Igor Sysoev |
| * Copyright (C) Nginx, Inc. |
| */ |
| |
| |
| #include <ngx_config.h> |
| #include <ngx_core.h> |
| #include <ngx_http.h> |
| |
| |
| static ngx_int_t ngx_http_static_handler(ngx_http_request_t *r); |
| static ngx_int_t ngx_http_static_init(ngx_conf_t *cf); |
| |
| |
| static ngx_http_module_t ngx_http_static_module_ctx = { |
| NULL, /* preconfiguration */ |
| ngx_http_static_init, /* 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_static_module = { |
| NGX_MODULE_V1, |
| &ngx_http_static_module_ctx, /* module context */ |
| NULL, /* 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_static_handler(ngx_http_request_t *r) |
| { |
| u_char *last, *location; |
| size_t root, len; |
| uintptr_t escape; |
| 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_list_push(&r->headers_out.headers); |
| if (r->headers_out.location == NULL) { |
| return NGX_HTTP_INTERNAL_SERVER_ERROR; |
| } |
| |
| escape = 2 * ngx_escape_uri(NULL, r->uri.data, r->uri.len, |
| NGX_ESCAPE_URI); |
| |
| if (!clcf->alias && r->args.len == 0 && escape == 0) { |
| len = r->uri.len + 1; |
| location = path.data + root; |
| |
| *last = '/'; |
| |
| } else { |
| len = r->uri.len + escape + 1; |
| |
| if (r->args.len) { |
| len += r->args.len + 1; |
| } |
| |
| location = ngx_pnalloc(r->pool, len); |
| if (location == NULL) { |
| ngx_http_clear_location(r); |
| return NGX_HTTP_INTERNAL_SERVER_ERROR; |
| } |
| |
| if (escape) { |
| last = (u_char *) ngx_escape_uri(location, r->uri.data, |
| r->uri.len, NGX_ESCAPE_URI); |
| |
| } else { |
| 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); |
| } |
| } |
| |
| r->headers_out.location->hash = 1; |
| ngx_str_set(&r->headers_out.location->key, "Location"); |
| 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_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; |
| } |
| |
| 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_static_init(ngx_conf_t *cf) |
| { |
| ngx_http_handler_pt *h; |
| ngx_http_core_main_conf_t *cmcf; |
| |
| cmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_core_module); |
| |
| h = ngx_array_push(&cmcf->phases[NGX_HTTP_CONTENT_PHASE].handlers); |
| if (h == NULL) { |
| return NGX_ERROR; |
| } |
| |
| *h = ngx_http_static_handler; |
| |
| return NGX_OK; |
| } |