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1.1 misho 1:
2: /*
3: * Copyright (C) Igor Sysoev
4: * Copyright (C) Nginx, Inc.
5: */
6:
7:
8: #include <ngx_config.h>
9: #include <ngx_core.h>
10: #include <ngx_http.h>
11:
12:
13: static ngx_int_t ngx_http_static_handler(ngx_http_request_t *r);
14: static ngx_int_t ngx_http_static_init(ngx_conf_t *cf);
15:
16:
17: ngx_http_module_t ngx_http_static_module_ctx = {
18: NULL, /* preconfiguration */
19: ngx_http_static_init, /* postconfiguration */
20:
21: NULL, /* create main configuration */
22: NULL, /* init main configuration */
23:
24: NULL, /* create server configuration */
25: NULL, /* merge server configuration */
26:
27: NULL, /* create location configuration */
28: NULL /* merge location configuration */
29: };
30:
31:
32: ngx_module_t ngx_http_static_module = {
33: NGX_MODULE_V1,
34: &ngx_http_static_module_ctx, /* module context */
35: NULL, /* module directives */
36: NGX_HTTP_MODULE, /* module type */
37: NULL, /* init master */
38: NULL, /* init module */
39: NULL, /* init process */
40: NULL, /* init thread */
41: NULL, /* exit thread */
42: NULL, /* exit process */
43: NULL, /* exit master */
44: NGX_MODULE_V1_PADDING
45: };
46:
47:
48: static ngx_int_t
49: ngx_http_static_handler(ngx_http_request_t *r)
50: {
51: u_char *last, *location;
52: size_t root, len;
53: ngx_str_t path;
54: ngx_int_t rc;
55: ngx_uint_t level;
56: ngx_log_t *log;
57: ngx_buf_t *b;
58: ngx_chain_t out;
59: ngx_open_file_info_t of;
60: ngx_http_core_loc_conf_t *clcf;
61:
62: if (!(r->method & (NGX_HTTP_GET|NGX_HTTP_HEAD|NGX_HTTP_POST))) {
63: return NGX_HTTP_NOT_ALLOWED;
64: }
65:
66: if (r->uri.data[r->uri.len - 1] == '/') {
67: return NGX_DECLINED;
68: }
69:
70: log = r->connection->log;
71:
72: /*
73: * ngx_http_map_uri_to_path() allocates memory for terminating '\0'
74: * so we do not need to reserve memory for '/' for possible redirect
75: */
76:
77: last = ngx_http_map_uri_to_path(r, &path, &root, 0);
78: if (last == NULL) {
79: return NGX_HTTP_INTERNAL_SERVER_ERROR;
80: }
81:
82: path.len = last - path.data;
83:
84: ngx_log_debug1(NGX_LOG_DEBUG_HTTP, log, 0,
85: "http filename: \"%s\"", path.data);
86:
87: clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
88:
89: ngx_memzero(&of, sizeof(ngx_open_file_info_t));
90:
91: of.read_ahead = clcf->read_ahead;
92: of.directio = clcf->directio;
93: of.valid = clcf->open_file_cache_valid;
94: of.min_uses = clcf->open_file_cache_min_uses;
95: of.errors = clcf->open_file_cache_errors;
96: of.events = clcf->open_file_cache_events;
97:
98: if (ngx_http_set_disable_symlinks(r, clcf, &path, &of) != NGX_OK) {
99: return NGX_HTTP_INTERNAL_SERVER_ERROR;
100: }
101:
102: if (ngx_open_cached_file(clcf->open_file_cache, &path, &of, r->pool)
103: != NGX_OK)
104: {
105: switch (of.err) {
106:
107: case 0:
108: return NGX_HTTP_INTERNAL_SERVER_ERROR;
109:
110: case NGX_ENOENT:
111: case NGX_ENOTDIR:
112: case NGX_ENAMETOOLONG:
113:
114: level = NGX_LOG_ERR;
115: rc = NGX_HTTP_NOT_FOUND;
116: break;
117:
118: case NGX_EACCES:
119: #if (NGX_HAVE_OPENAT)
120: case NGX_EMLINK:
121: case NGX_ELOOP:
122: #endif
123:
124: level = NGX_LOG_ERR;
125: rc = NGX_HTTP_FORBIDDEN;
126: break;
127:
128: default:
129:
130: level = NGX_LOG_CRIT;
131: rc = NGX_HTTP_INTERNAL_SERVER_ERROR;
132: break;
133: }
134:
135: if (rc != NGX_HTTP_NOT_FOUND || clcf->log_not_found) {
136: ngx_log_error(level, log, of.err,
137: "%s \"%s\" failed", of.failed, path.data);
138: }
139:
140: return rc;
141: }
142:
143: r->root_tested = !r->error_page;
144:
145: ngx_log_debug1(NGX_LOG_DEBUG_HTTP, log, 0, "http static fd: %d", of.fd);
146:
147: if (of.is_dir) {
148:
149: ngx_log_debug0(NGX_LOG_DEBUG_HTTP, log, 0, "http dir");
150:
151: ngx_http_clear_location(r);
152:
153: r->headers_out.location = ngx_palloc(r->pool, sizeof(ngx_table_elt_t));
154: if (r->headers_out.location == NULL) {
155: return NGX_HTTP_INTERNAL_SERVER_ERROR;
156: }
157:
158: len = r->uri.len + 1;
159:
160: if (!clcf->alias && clcf->root_lengths == NULL && r->args.len == 0) {
161: location = path.data + clcf->root.len;
162:
163: *last = '/';
164:
165: } else {
166: if (r->args.len) {
167: len += r->args.len + 1;
168: }
169:
170: location = ngx_pnalloc(r->pool, len);
171: if (location == NULL) {
172: return NGX_HTTP_INTERNAL_SERVER_ERROR;
173: }
174:
175: last = ngx_copy(location, r->uri.data, r->uri.len);
176:
177: *last = '/';
178:
179: if (r->args.len) {
180: *++last = '?';
181: ngx_memcpy(++last, r->args.data, r->args.len);
182: }
183: }
184:
185: /*
186: * we do not need to set the r->headers_out.location->hash and
187: * r->headers_out.location->key fields
188: */
189:
190: r->headers_out.location->value.len = len;
191: r->headers_out.location->value.data = location;
192:
193: return NGX_HTTP_MOVED_PERMANENTLY;
194: }
195:
196: #if !(NGX_WIN32) /* the not regular files are probably Unix specific */
197:
198: if (!of.is_file) {
199: ngx_log_error(NGX_LOG_CRIT, log, 0,
200: "\"%s\" is not a regular file", path.data);
201:
202: return NGX_HTTP_NOT_FOUND;
203: }
204:
205: #endif
206:
207: if (r->method & NGX_HTTP_POST) {
208: return NGX_HTTP_NOT_ALLOWED;
209: }
210:
211: rc = ngx_http_discard_request_body(r);
212:
213: if (rc != NGX_OK) {
214: return rc;
215: }
216:
217: log->action = "sending response to client";
218:
219: r->headers_out.status = NGX_HTTP_OK;
220: r->headers_out.content_length_n = of.size;
221: r->headers_out.last_modified_time = of.mtime;
222:
223: if (ngx_http_set_etag(r) != NGX_OK) {
224: return NGX_HTTP_INTERNAL_SERVER_ERROR;
225: }
226:
227: if (ngx_http_set_content_type(r) != NGX_OK) {
228: return NGX_HTTP_INTERNAL_SERVER_ERROR;
229: }
230:
231: if (r != r->main && of.size == 0) {
232: return ngx_http_send_header(r);
233: }
234:
235: r->allow_ranges = 1;
236:
237: /* we need to allocate all before the header would be sent */
238:
239: b = ngx_pcalloc(r->pool, sizeof(ngx_buf_t));
240: if (b == NULL) {
241: return NGX_HTTP_INTERNAL_SERVER_ERROR;
242: }
243:
244: b->file = ngx_pcalloc(r->pool, sizeof(ngx_file_t));
245: if (b->file == NULL) {
246: return NGX_HTTP_INTERNAL_SERVER_ERROR;
247: }
248:
249: rc = ngx_http_send_header(r);
250:
251: if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) {
252: return rc;
253: }
254:
255: b->file_pos = 0;
256: b->file_last = of.size;
257:
258: b->in_file = b->file_last ? 1: 0;
259: b->last_buf = (r == r->main) ? 1: 0;
260: b->last_in_chain = 1;
261:
262: b->file->fd = of.fd;
263: b->file->name = path;
264: b->file->log = log;
265: b->file->directio = of.is_directio;
266:
267: out.buf = b;
268: out.next = NULL;
269:
270: return ngx_http_output_filter(r, &out);
271: }
272:
273:
274: static ngx_int_t
275: ngx_http_static_init(ngx_conf_t *cf)
276: {
277: ngx_http_handler_pt *h;
278: ngx_http_core_main_conf_t *cmcf;
279:
280: cmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_core_module);
281:
282: h = ngx_array_push(&cmcf->phases[NGX_HTTP_CONTENT_PHASE].handlers);
283: if (h == NULL) {
284: return NGX_ERROR;
285: }
286:
287: *h = ngx_http_static_handler;
288:
289: return NGX_OK;
290: }