Mercurial > hg > nginx-mail
comparison src/http/modules/ngx_http_realip_module.c @ 665:0b460e61bdcd default tip
Merge with nginx 1.0.0.
author | Maxim Dounin <mdounin@mdounin.ru> |
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date | Mon, 25 Apr 2011 04:22:17 +0400 |
parents | 40c366b3535c |
children |
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572:06419a2298a9 | 665:0b460e61bdcd |
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23 typedef struct { | 23 typedef struct { |
24 ngx_array_t *from; /* array of ngx_http_realip_from_t */ | 24 ngx_array_t *from; /* array of ngx_http_realip_from_t */ |
25 ngx_uint_t type; | 25 ngx_uint_t type; |
26 ngx_uint_t hash; | 26 ngx_uint_t hash; |
27 ngx_str_t header; | 27 ngx_str_t header; |
28 #if (NGX_HAVE_UNIX_DOMAIN) | |
29 ngx_uint_t unixsock; /* unsigned unixsock:2; */ | |
30 #endif | |
28 } ngx_http_realip_loc_conf_t; | 31 } ngx_http_realip_loc_conf_t; |
29 | 32 |
30 | 33 |
31 typedef struct { | 34 typedef struct { |
32 ngx_connection_t *connection; | 35 ngx_connection_t *connection; |
33 in_addr_t addr; | 36 struct sockaddr *sockaddr; |
37 socklen_t socklen; | |
34 ngx_str_t addr_text; | 38 ngx_str_t addr_text; |
35 } ngx_http_realip_ctx_t; | 39 } ngx_http_realip_ctx_t; |
36 | 40 |
37 | 41 |
38 static ngx_int_t ngx_http_realip_handler(ngx_http_request_t *r); | 42 static ngx_int_t ngx_http_realip_handler(ngx_http_request_t *r); |
43 static ngx_int_t ngx_http_realip_set_addr(ngx_http_request_t *r, u_char *ip, | |
44 size_t len); | |
39 static void ngx_http_realip_cleanup(void *data); | 45 static void ngx_http_realip_cleanup(void *data); |
40 static char *ngx_http_realip_from(ngx_conf_t *cf, ngx_command_t *cmd, | 46 static char *ngx_http_realip_from(ngx_conf_t *cf, ngx_command_t *cmd, |
41 void *conf); | 47 void *conf); |
42 static char *ngx_http_realip(ngx_conf_t *cf, ngx_command_t *cmd, void *conf); | 48 static char *ngx_http_realip(ngx_conf_t *cf, ngx_command_t *cmd, void *conf); |
43 static void *ngx_http_realip_create_loc_conf(ngx_conf_t *cf); | 49 static void *ngx_http_realip_create_loc_conf(ngx_conf_t *cf); |
101 static ngx_int_t | 107 static ngx_int_t |
102 ngx_http_realip_handler(ngx_http_request_t *r) | 108 ngx_http_realip_handler(ngx_http_request_t *r) |
103 { | 109 { |
104 u_char *ip, *p; | 110 u_char *ip, *p; |
105 size_t len; | 111 size_t len; |
106 in_addr_t addr; | |
107 ngx_uint_t i, hash; | 112 ngx_uint_t i, hash; |
108 ngx_list_part_t *part; | 113 ngx_list_part_t *part; |
109 ngx_table_elt_t *header; | 114 ngx_table_elt_t *header; |
110 struct sockaddr_in *sin; | 115 struct sockaddr_in *sin; |
111 ngx_connection_t *c; | 116 ngx_connection_t *c; |
112 ngx_pool_cleanup_t *cln; | |
113 ngx_http_realip_ctx_t *ctx; | 117 ngx_http_realip_ctx_t *ctx; |
114 ngx_http_realip_from_t *from; | 118 ngx_http_realip_from_t *from; |
115 ngx_http_realip_loc_conf_t *rlcf; | 119 ngx_http_realip_loc_conf_t *rlcf; |
116 | 120 |
117 ctx = ngx_http_get_module_ctx(r, ngx_http_realip_module); | 121 ctx = ngx_http_get_module_ctx(r, ngx_http_realip_module); |
118 | 122 |
119 if (ctx) { | 123 if (ctx) { |
120 return NGX_DECLINED; | 124 return NGX_DECLINED; |
121 } | 125 } |
122 | 126 |
123 cln = ngx_pool_cleanup_add(r->pool, sizeof(ngx_http_realip_ctx_t)); | |
124 if (cln == NULL) { | |
125 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
126 } | |
127 | |
128 rlcf = ngx_http_get_module_loc_conf(r, ngx_http_realip_module); | 127 rlcf = ngx_http_get_module_loc_conf(r, ngx_http_realip_module); |
129 | 128 |
130 if (rlcf->from == NULL) { | 129 if (rlcf->from == NULL |
130 #if (NGX_HAVE_UNIX_DOMAIN) | |
131 && !rlcf->unixsock | |
132 #endif | |
133 ) | |
134 { | |
131 return NGX_DECLINED; | 135 return NGX_DECLINED; |
132 } | 136 } |
133 | 137 |
134 switch (rlcf->type) { | 138 switch (rlcf->type) { |
135 | 139 |
205 | 209 |
206 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0, "realip: \"%s\"", ip); | 210 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0, "realip: \"%s\"", ip); |
207 | 211 |
208 /* AF_INET only */ | 212 /* AF_INET only */ |
209 | 213 |
210 if (r->connection->sockaddr->sa_family != AF_INET) { | 214 if (c->sockaddr->sa_family == AF_INET) { |
215 sin = (struct sockaddr_in *) c->sockaddr; | |
216 | |
217 from = rlcf->from->elts; | |
218 for (i = 0; i < rlcf->from->nelts; i++) { | |
219 | |
220 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, c->log, 0, | |
221 "realip: %08XD %08XD %08XD", | |
222 sin->sin_addr.s_addr, from[i].mask, from[i].addr); | |
223 | |
224 if ((sin->sin_addr.s_addr & from[i].mask) == from[i].addr) { | |
225 return ngx_http_realip_set_addr(r, ip, len); | |
226 } | |
227 } | |
228 } | |
229 | |
230 #if (NGX_HAVE_UNIX_DOMAIN) | |
231 | |
232 if (c->sockaddr->sa_family == AF_UNIX && rlcf->unixsock) { | |
233 return ngx_http_realip_set_addr(r, ip, len); | |
234 } | |
235 | |
236 #endif | |
237 | |
238 return NGX_DECLINED; | |
239 } | |
240 | |
241 | |
242 static ngx_int_t | |
243 ngx_http_realip_set_addr(ngx_http_request_t *r, u_char *ip, size_t len) | |
244 { | |
245 u_char *p; | |
246 ngx_int_t rc; | |
247 ngx_addr_t addr; | |
248 ngx_connection_t *c; | |
249 ngx_pool_cleanup_t *cln; | |
250 ngx_http_realip_ctx_t *ctx; | |
251 | |
252 cln = ngx_pool_cleanup_add(r->pool, sizeof(ngx_http_realip_ctx_t)); | |
253 if (cln == NULL) { | |
254 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
255 } | |
256 | |
257 ctx = cln->data; | |
258 ngx_http_set_ctx(r, ctx, ngx_http_realip_module); | |
259 | |
260 c = r->connection; | |
261 | |
262 rc = ngx_parse_addr(c->pool, &addr, ip, len); | |
263 | |
264 switch (rc) { | |
265 case NGX_DECLINED: | |
211 return NGX_DECLINED; | 266 return NGX_DECLINED; |
212 } | 267 case NGX_ERROR: |
213 | 268 return NGX_HTTP_INTERNAL_SERVER_ERROR; |
214 sin = (struct sockaddr_in *) c->sockaddr; | 269 default: /* NGX_OK */ |
215 | 270 break; |
216 from = rlcf->from->elts; | 271 } |
217 for (i = 0; i < rlcf->from->nelts; i++) { | 272 |
218 | 273 p = ngx_pnalloc(c->pool, len); |
219 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, c->log, 0, | 274 if (p == NULL) { |
220 "realip: %08XD %08XD %08XD", | 275 return NGX_HTTP_INTERNAL_SERVER_ERROR; |
221 sin->sin_addr.s_addr, from[i].mask, from[i].addr); | 276 } |
222 | 277 |
223 if ((sin->sin_addr.s_addr & from[i].mask) == from[i].addr) { | 278 ngx_memcpy(p, ip, len); |
224 | 279 |
225 ctx = cln->data; | 280 cln->handler = ngx_http_realip_cleanup; |
226 | 281 |
227 ngx_http_set_ctx(r, ctx, ngx_http_realip_module); | 282 ctx->connection = c; |
228 | 283 ctx->sockaddr = c->sockaddr; |
229 addr = inet_addr((char *) ip); | 284 ctx->socklen = c->socklen; |
230 | 285 ctx->addr_text = c->addr_text; |
231 if (addr == INADDR_NONE) { | 286 |
232 return NGX_DECLINED; | 287 c->sockaddr = addr.sockaddr; |
233 } | 288 c->socklen = addr.socklen; |
234 | 289 c->addr_text.len = len; |
235 p = ngx_pnalloc(c->pool, len); | 290 c->addr_text.data = p; |
236 if (p == NULL) { | |
237 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
238 } | |
239 | |
240 ngx_memcpy(p, ip, len); | |
241 | |
242 cln->handler = ngx_http_realip_cleanup; | |
243 | |
244 ctx->connection = c; | |
245 ctx->addr = sin->sin_addr.s_addr; | |
246 ctx->addr_text = c->addr_text; | |
247 | |
248 sin->sin_addr.s_addr = addr; | |
249 | |
250 c->addr_text.len = len; | |
251 c->addr_text.data = p; | |
252 | |
253 return NGX_DECLINED; | |
254 } | |
255 } | |
256 | 291 |
257 return NGX_DECLINED; | 292 return NGX_DECLINED; |
258 } | 293 } |
259 | 294 |
260 | 295 |
261 static void | 296 static void |
262 ngx_http_realip_cleanup(void *data) | 297 ngx_http_realip_cleanup(void *data) |
263 { | 298 { |
264 ngx_http_realip_ctx_t *ctx = data; | 299 ngx_http_realip_ctx_t *ctx = data; |
265 | 300 |
266 ngx_connection_t *c; | 301 ngx_connection_t *c; |
267 struct sockaddr_in *sin; | |
268 | 302 |
269 c = ctx->connection; | 303 c = ctx->connection; |
270 | 304 |
271 sin = (struct sockaddr_in *) c->sockaddr; | 305 c->sockaddr = ctx->sockaddr; |
272 sin->sin_addr.s_addr = ctx->addr; | 306 c->socklen = ctx->socklen; |
273 | |
274 c->addr_text = ctx->addr_text; | 307 c->addr_text = ctx->addr_text; |
275 } | 308 } |
276 | 309 |
277 | 310 |
278 static char * | 311 static char * |
282 | 315 |
283 ngx_int_t rc; | 316 ngx_int_t rc; |
284 ngx_str_t *value; | 317 ngx_str_t *value; |
285 ngx_cidr_t cidr; | 318 ngx_cidr_t cidr; |
286 ngx_http_realip_from_t *from; | 319 ngx_http_realip_from_t *from; |
320 | |
321 value = cf->args->elts; | |
322 | |
323 #if (NGX_HAVE_UNIX_DOMAIN) | |
324 | |
325 if (ngx_strcmp(value[1].data, "unix:") == 0) { | |
326 rlcf->unixsock = 1; | |
327 return NGX_CONF_OK; | |
328 } | |
329 | |
330 #endif | |
287 | 331 |
288 if (rlcf->from == NULL) { | 332 if (rlcf->from == NULL) { |
289 rlcf->from = ngx_array_create(cf->pool, 2, | 333 rlcf->from = ngx_array_create(cf->pool, 2, |
290 sizeof(ngx_http_realip_from_t)); | 334 sizeof(ngx_http_realip_from_t)); |
291 if (rlcf->from == NULL) { | 335 if (rlcf->from == NULL) { |
296 from = ngx_array_push(rlcf->from); | 340 from = ngx_array_push(rlcf->from); |
297 if (from == NULL) { | 341 if (from == NULL) { |
298 return NGX_CONF_ERROR; | 342 return NGX_CONF_ERROR; |
299 } | 343 } |
300 | 344 |
301 value = cf->args->elts; | |
302 | |
303 rc = ngx_ptocidr(&value[1], &cidr); | 345 rc = ngx_ptocidr(&value[1], &cidr); |
304 | 346 |
305 if (rc == NGX_ERROR) { | 347 if (rc == NGX_ERROR) { |
306 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "invalid parameter \"%V\"", | 348 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "invalid parameter \"%V\"", |
307 &value[1]); | 349 &value[1]); |
308 return NGX_CONF_ERROR; | 350 return NGX_CONF_ERROR; |
309 } | 351 } |
310 | 352 |
311 if (cidr.family != AF_INET) { | 353 if (cidr.family != AF_INET) { |
312 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | 354 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
313 "\"realip_from\" supports IPv4 only"); | 355 "\"set_real_ip_from\" supports IPv4 only"); |
314 return NGX_CONF_ERROR; | 356 return NGX_CONF_ERROR; |
315 } | 357 } |
316 | 358 |
317 if (rc == NGX_DONE) { | 359 if (rc == NGX_DONE) { |
318 ngx_conf_log_error(NGX_LOG_WARN, cf, 0, | 360 ngx_conf_log_error(NGX_LOG_WARN, cf, 0, |
370 * conf->hash = 0; | 412 * conf->hash = 0; |
371 * conf->header = { 0, NULL }; | 413 * conf->header = { 0, NULL }; |
372 */ | 414 */ |
373 | 415 |
374 conf->type = NGX_CONF_UNSET_UINT; | 416 conf->type = NGX_CONF_UNSET_UINT; |
417 #if (NGX_HAVE_UNIX_DOMAIN) | |
418 conf->unixsock = 2; | |
419 #endif | |
375 | 420 |
376 return conf; | 421 return conf; |
377 } | 422 } |
378 | 423 |
379 | 424 |
384 ngx_http_realip_loc_conf_t *conf = child; | 429 ngx_http_realip_loc_conf_t *conf = child; |
385 | 430 |
386 if (conf->from == NULL) { | 431 if (conf->from == NULL) { |
387 conf->from = prev->from; | 432 conf->from = prev->from; |
388 } | 433 } |
434 | |
435 #if (NGX_HAVE_UNIX_DOMAIN) | |
436 if (conf->unixsock == 2) { | |
437 conf->unixsock = (prev->unixsock == 2) ? 0 : prev->unixsock; | |
438 } | |
439 #endif | |
389 | 440 |
390 ngx_conf_merge_uint_value(conf->type, prev->type, NGX_HTTP_REALIP_XREALIP); | 441 ngx_conf_merge_uint_value(conf->type, prev->type, NGX_HTTP_REALIP_XREALIP); |
391 | 442 |
392 if (conf->header.len == 0) { | 443 if (conf->header.len == 0) { |
393 conf->hash = prev->hash; | 444 conf->hash = prev->hash; |