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- Committer: Package Import Robot
- Author(s): Thomas Ward
- Date: 2013-05-24 12:37:12 UTC
- Revision ID: package-import@ubuntu.com-20130524123712-5rykl481p5f4hj0e
Tags: 1.2.1-2.2ubuntu0.1
* Security update (closes LP: #1182586):
* Patch to fix a buffer overflow vulnerability (CVE-2013-2070)
* Patch to fix a buffer overflow vulnerability (CVE-2013-2070)
- files added:
- .pc/cve-2013-2070.patch
- .pc/cve-2013-2070.patch/src
- .pc/cve-2013-2070.patch/src/http
- .pc/cve-2013-2070.patch/src/http/modules
- files modified:
- .pc/applied-patches
added
removed
.pc/cve-2013-2070.patch/src/http/modules/ngx_http_proxy_module.c
1
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/*
3
* Copyright (C) Igor Sysoev
4
* Copyright (C) Nginx, Inc.
5
*/
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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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typedef struct ngx_http_proxy_rewrite_s ngx_http_proxy_rewrite_t;
14
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typedef ngx_int_t (*ngx_http_proxy_rewrite_pt)(ngx_http_request_t *r,
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ngx_table_elt_t *h, size_t prefix, size_t len,
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ngx_http_proxy_rewrite_t *pr);
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struct ngx_http_proxy_rewrite_s {
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ngx_http_proxy_rewrite_pt handler;
21
22
union {
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ngx_http_complex_value_t complex;
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#if (NGX_PCRE)
25
ngx_http_regex_t *regex;
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#endif
27
} pattern;
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ngx_http_complex_value_t replacement;
30
};
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typedef struct {
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ngx_str_t key_start;
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ngx_str_t schema;
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ngx_str_t host_header;
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ngx_str_t port;
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ngx_str_t uri;
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} ngx_http_proxy_vars_t;
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typedef struct {
43
ngx_http_upstream_conf_t upstream;
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ngx_array_t *flushes;
46
ngx_array_t *body_set_len;
47
ngx_array_t *body_set;
48
ngx_array_t *headers_set_len;
49
ngx_array_t *headers_set;
50
ngx_hash_t headers_set_hash;
51
52
ngx_array_t *headers_source;
53
54
ngx_array_t *proxy_lengths;
55
ngx_array_t *proxy_values;
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ngx_array_t *redirects;
58
ngx_array_t *cookie_domains;
59
ngx_array_t *cookie_paths;
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ngx_str_t body_source;
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ngx_str_t method;
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ngx_str_t location;
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ngx_str_t url;
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#if (NGX_HTTP_CACHE)
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ngx_http_complex_value_t cache_key;
69
#endif
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ngx_http_proxy_vars_t vars;
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ngx_flag_t redirect;
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ngx_uint_t http_version;
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ngx_uint_t headers_hash_max_size;
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ngx_uint_t headers_hash_bucket_size;
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} ngx_http_proxy_loc_conf_t;
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typedef struct {
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ngx_http_status_t status;
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ngx_http_proxy_vars_t vars;
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size_t internal_body_length;
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ngx_uint_t state;
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off_t size;
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off_t length;
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ngx_uint_t head; /* unsigned head:1 */
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} ngx_http_proxy_ctx_t;
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static ngx_int_t ngx_http_proxy_eval(ngx_http_request_t *r,
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ngx_http_proxy_ctx_t *ctx, ngx_http_proxy_loc_conf_t *plcf);
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#if (NGX_HTTP_CACHE)
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static ngx_int_t ngx_http_proxy_create_key(ngx_http_request_t *r);
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#endif
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static ngx_int_t ngx_http_proxy_create_request(ngx_http_request_t *r);
101
static ngx_int_t ngx_http_proxy_reinit_request(ngx_http_request_t *r);
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static ngx_int_t ngx_http_proxy_process_status_line(ngx_http_request_t *r);
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static ngx_int_t ngx_http_proxy_process_header(ngx_http_request_t *r);
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static ngx_int_t ngx_http_proxy_input_filter_init(void *data);
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static ngx_int_t ngx_http_proxy_copy_filter(ngx_event_pipe_t *p,
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ngx_buf_t *buf);
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static ngx_int_t ngx_http_proxy_chunked_filter(ngx_event_pipe_t *p,
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ngx_buf_t *buf);
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static ngx_int_t ngx_http_proxy_non_buffered_copy_filter(void *data,
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ssize_t bytes);
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static ngx_int_t ngx_http_proxy_non_buffered_chunked_filter(void *data,
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ssize_t bytes);
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static void ngx_http_proxy_abort_request(ngx_http_request_t *r);
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static void ngx_http_proxy_finalize_request(ngx_http_request_t *r,
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ngx_int_t rc);
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static ngx_int_t ngx_http_proxy_host_variable(ngx_http_request_t *r,
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ngx_http_variable_value_t *v, uintptr_t data);
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static ngx_int_t ngx_http_proxy_port_variable(ngx_http_request_t *r,
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ngx_http_variable_value_t *v, uintptr_t data);
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static ngx_int_t
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ngx_http_proxy_add_x_forwarded_for_variable(ngx_http_request_t *r,
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ngx_http_variable_value_t *v, uintptr_t data);
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static ngx_int_t
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ngx_http_proxy_internal_body_length_variable(ngx_http_request_t *r,
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ngx_http_variable_value_t *v, uintptr_t data);
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static ngx_int_t ngx_http_proxy_rewrite_redirect(ngx_http_request_t *r,
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ngx_table_elt_t *h, size_t prefix);
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static ngx_int_t ngx_http_proxy_rewrite_cookie(ngx_http_request_t *r,
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ngx_table_elt_t *h);
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static ngx_int_t ngx_http_proxy_rewrite_cookie_value(ngx_http_request_t *r,
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ngx_table_elt_t *h, u_char *value, ngx_array_t *rewrites);
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static ngx_int_t ngx_http_proxy_rewrite(ngx_http_request_t *r,
134
ngx_table_elt_t *h, size_t prefix, size_t len, ngx_str_t *replacement);
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static ngx_int_t ngx_http_proxy_add_variables(ngx_conf_t *cf);
137
static void *ngx_http_proxy_create_loc_conf(ngx_conf_t *cf);
138
static char *ngx_http_proxy_merge_loc_conf(ngx_conf_t *cf,
139
void *parent, void *child);
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static ngx_int_t ngx_http_proxy_merge_headers(ngx_conf_t *cf,
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ngx_http_proxy_loc_conf_t *conf, ngx_http_proxy_loc_conf_t *prev);
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static char *ngx_http_proxy_pass(ngx_conf_t *cf, ngx_command_t *cmd,
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void *conf);
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static char *ngx_http_proxy_redirect(ngx_conf_t *cf, ngx_command_t *cmd,
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void *conf);
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static char *ngx_http_proxy_cookie_domain(ngx_conf_t *cf, ngx_command_t *cmd,
148
void *conf);
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static char *ngx_http_proxy_cookie_path(ngx_conf_t *cf, ngx_command_t *cmd,
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void *conf);
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static char *ngx_http_proxy_store(ngx_conf_t *cf, ngx_command_t *cmd,
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void *conf);
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#if (NGX_HTTP_CACHE)
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static char *ngx_http_proxy_cache(ngx_conf_t *cf, ngx_command_t *cmd,
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void *conf);
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static char *ngx_http_proxy_cache_key(ngx_conf_t *cf, ngx_command_t *cmd,
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void *conf);
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#endif
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static char *ngx_http_proxy_lowat_check(ngx_conf_t *cf, void *post, void *data);
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static ngx_int_t ngx_http_proxy_rewrite_regex(ngx_conf_t *cf,
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ngx_http_proxy_rewrite_t *pr, ngx_str_t *regex, ngx_uint_t caseless);
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#if (NGX_HTTP_SSL)
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static ngx_int_t ngx_http_proxy_set_ssl(ngx_conf_t *cf,
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ngx_http_proxy_loc_conf_t *plcf);
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#endif
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static void ngx_http_proxy_set_vars(ngx_url_t *u, ngx_http_proxy_vars_t *v);
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static ngx_conf_post_t ngx_http_proxy_lowat_post =
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{ ngx_http_proxy_lowat_check };
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static ngx_conf_bitmask_t ngx_http_proxy_next_upstream_masks[] = {
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{ ngx_string("error"), NGX_HTTP_UPSTREAM_FT_ERROR },
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{ ngx_string("timeout"), NGX_HTTP_UPSTREAM_FT_TIMEOUT },
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{ ngx_string("invalid_header"), NGX_HTTP_UPSTREAM_FT_INVALID_HEADER },
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{ ngx_string("http_500"), NGX_HTTP_UPSTREAM_FT_HTTP_500 },
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{ ngx_string("http_502"), NGX_HTTP_UPSTREAM_FT_HTTP_502 },
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{ ngx_string("http_503"), NGX_HTTP_UPSTREAM_FT_HTTP_503 },
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{ ngx_string("http_504"), NGX_HTTP_UPSTREAM_FT_HTTP_504 },
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{ ngx_string("http_404"), NGX_HTTP_UPSTREAM_FT_HTTP_404 },
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{ ngx_string("updating"), NGX_HTTP_UPSTREAM_FT_UPDATING },
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{ ngx_string("off"), NGX_HTTP_UPSTREAM_FT_OFF },
187
{ ngx_null_string, 0 }
188
};
189
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static ngx_conf_enum_t ngx_http_proxy_http_version[] = {
192
{ ngx_string("1.0"), NGX_HTTP_VERSION_10 },
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{ ngx_string("1.1"), NGX_HTTP_VERSION_11 },
194
{ ngx_null_string, 0 }
195
};
196
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198
ngx_module_t ngx_http_proxy_module;
199
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static ngx_command_t ngx_http_proxy_commands[] = {
202
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{ ngx_string("proxy_pass"),
204
NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF|NGX_HTTP_LMT_CONF|NGX_CONF_TAKE1,
205
ngx_http_proxy_pass,
206
NGX_HTTP_LOC_CONF_OFFSET,
207
0,
208
NULL },
209
210
{ ngx_string("proxy_redirect"),
211
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE12,
212
ngx_http_proxy_redirect,
213
NGX_HTTP_LOC_CONF_OFFSET,
214
0,
215
NULL },
216
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{ ngx_string("proxy_cookie_domain"),
218
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE12,
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ngx_http_proxy_cookie_domain,
220
NGX_HTTP_LOC_CONF_OFFSET,
221
0,
222
NULL },
223
224
{ ngx_string("proxy_cookie_path"),
225
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE12,
226
ngx_http_proxy_cookie_path,
227
NGX_HTTP_LOC_CONF_OFFSET,
228
0,
229
NULL },
230
231
{ ngx_string("proxy_store"),
232
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
233
ngx_http_proxy_store,
234
NGX_HTTP_LOC_CONF_OFFSET,
235
0,
236
NULL },
237
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{ ngx_string("proxy_store_access"),
239
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE123,
240
ngx_conf_set_access_slot,
241
NGX_HTTP_LOC_CONF_OFFSET,
242
offsetof(ngx_http_proxy_loc_conf_t, upstream.store_access),
243
NULL },
244
245
{ ngx_string("proxy_buffering"),
246
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
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ngx_conf_set_flag_slot,
248
NGX_HTTP_LOC_CONF_OFFSET,
249
offsetof(ngx_http_proxy_loc_conf_t, upstream.buffering),
250
NULL },
251
252
{ ngx_string("proxy_ignore_client_abort"),
253
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
254
ngx_conf_set_flag_slot,
255
NGX_HTTP_LOC_CONF_OFFSET,
256
offsetof(ngx_http_proxy_loc_conf_t, upstream.ignore_client_abort),
257
NULL },
258
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{ ngx_string("proxy_bind"),
260
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
261
ngx_http_upstream_bind_set_slot,
262
NGX_HTTP_LOC_CONF_OFFSET,
263
offsetof(ngx_http_proxy_loc_conf_t, upstream.local),
264
NULL },
265
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{ ngx_string("proxy_connect_timeout"),
267
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
268
ngx_conf_set_msec_slot,
269
NGX_HTTP_LOC_CONF_OFFSET,
270
offsetof(ngx_http_proxy_loc_conf_t, upstream.connect_timeout),
271
NULL },
272
273
{ ngx_string("proxy_send_timeout"),
274
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
275
ngx_conf_set_msec_slot,
276
NGX_HTTP_LOC_CONF_OFFSET,
277
offsetof(ngx_http_proxy_loc_conf_t, upstream.send_timeout),
278
NULL },
279
280
{ ngx_string("proxy_send_lowat"),
281
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
282
ngx_conf_set_size_slot,
283
NGX_HTTP_LOC_CONF_OFFSET,
284
offsetof(ngx_http_proxy_loc_conf_t, upstream.send_lowat),
285
&ngx_http_proxy_lowat_post },
286
287
{ ngx_string("proxy_intercept_errors"),
288
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
289
ngx_conf_set_flag_slot,
290
NGX_HTTP_LOC_CONF_OFFSET,
291
offsetof(ngx_http_proxy_loc_conf_t, upstream.intercept_errors),
292
NULL },
293
294
{ ngx_string("proxy_set_header"),
295
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE2,
296
ngx_conf_set_keyval_slot,
297
NGX_HTTP_LOC_CONF_OFFSET,
298
offsetof(ngx_http_proxy_loc_conf_t, headers_source),
299
NULL },
300
301
{ ngx_string("proxy_headers_hash_max_size"),
302
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
303
ngx_conf_set_num_slot,
304
NGX_HTTP_LOC_CONF_OFFSET,
305
offsetof(ngx_http_proxy_loc_conf_t, headers_hash_max_size),
306
NULL },
307
308
{ ngx_string("proxy_headers_hash_bucket_size"),
309
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
310
ngx_conf_set_num_slot,
311
NGX_HTTP_LOC_CONF_OFFSET,
312
offsetof(ngx_http_proxy_loc_conf_t, headers_hash_bucket_size),
313
NULL },
314
315
{ ngx_string("proxy_set_body"),
316
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
317
ngx_conf_set_str_slot,
318
NGX_HTTP_LOC_CONF_OFFSET,
319
offsetof(ngx_http_proxy_loc_conf_t, body_source),
320
NULL },
321
322
{ ngx_string("proxy_method"),
323
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
324
ngx_conf_set_str_slot,
325
NGX_HTTP_LOC_CONF_OFFSET,
326
offsetof(ngx_http_proxy_loc_conf_t, method),
327
NULL },
328
329
{ ngx_string("proxy_pass_request_headers"),
330
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
331
ngx_conf_set_flag_slot,
332
NGX_HTTP_LOC_CONF_OFFSET,
333
offsetof(ngx_http_proxy_loc_conf_t, upstream.pass_request_headers),
334
NULL },
335
336
{ ngx_string("proxy_pass_request_body"),
337
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
338
ngx_conf_set_flag_slot,
339
NGX_HTTP_LOC_CONF_OFFSET,
340
offsetof(ngx_http_proxy_loc_conf_t, upstream.pass_request_body),
341
NULL },
342
343
{ ngx_string("proxy_buffer_size"),
344
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
345
ngx_conf_set_size_slot,
346
NGX_HTTP_LOC_CONF_OFFSET,
347
offsetof(ngx_http_proxy_loc_conf_t, upstream.buffer_size),
348
NULL },
349
350
{ ngx_string("proxy_read_timeout"),
351
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
352
ngx_conf_set_msec_slot,
353
NGX_HTTP_LOC_CONF_OFFSET,
354
offsetof(ngx_http_proxy_loc_conf_t, upstream.read_timeout),
355
NULL },
356
357
{ ngx_string("proxy_buffers"),
358
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE2,
359
ngx_conf_set_bufs_slot,
360
NGX_HTTP_LOC_CONF_OFFSET,
361
offsetof(ngx_http_proxy_loc_conf_t, upstream.bufs),
362
NULL },
363
364
{ ngx_string("proxy_busy_buffers_size"),
365
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
366
ngx_conf_set_size_slot,
367
NGX_HTTP_LOC_CONF_OFFSET,
368
offsetof(ngx_http_proxy_loc_conf_t, upstream.busy_buffers_size_conf),
369
NULL },
370
371
#if (NGX_HTTP_CACHE)
372
373
{ ngx_string("proxy_cache"),
374
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
375
ngx_http_proxy_cache,
376
NGX_HTTP_LOC_CONF_OFFSET,
377
0,
378
NULL },
379
380
{ ngx_string("proxy_cache_key"),
381
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
382
ngx_http_proxy_cache_key,
383
NGX_HTTP_LOC_CONF_OFFSET,
384
0,
385
NULL },
386
387
{ ngx_string("proxy_cache_path"),
388
NGX_HTTP_MAIN_CONF|NGX_CONF_2MORE,
389
ngx_http_file_cache_set_slot,
390
0,
391
0,
392
&ngx_http_proxy_module },
393
394
{ ngx_string("proxy_cache_bypass"),
395
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE,
396
ngx_http_set_predicate_slot,
397
NGX_HTTP_LOC_CONF_OFFSET,
398
offsetof(ngx_http_proxy_loc_conf_t, upstream.cache_bypass),
399
NULL },
400
401
{ ngx_string("proxy_no_cache"),
402
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE,
403
ngx_http_set_predicate_slot,
404
NGX_HTTP_LOC_CONF_OFFSET,
405
offsetof(ngx_http_proxy_loc_conf_t, upstream.no_cache),
406
NULL },
407
408
{ ngx_string("proxy_cache_valid"),
409
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE,
410
ngx_http_file_cache_valid_set_slot,
411
NGX_HTTP_LOC_CONF_OFFSET,
412
offsetof(ngx_http_proxy_loc_conf_t, upstream.cache_valid),
413
NULL },
414
415
{ ngx_string("proxy_cache_min_uses"),
416
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
417
ngx_conf_set_num_slot,
418
NGX_HTTP_LOC_CONF_OFFSET,
419
offsetof(ngx_http_proxy_loc_conf_t, upstream.cache_min_uses),
420
NULL },
421
422
{ ngx_string("proxy_cache_use_stale"),
423
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE,
424
ngx_conf_set_bitmask_slot,
425
NGX_HTTP_LOC_CONF_OFFSET,
426
offsetof(ngx_http_proxy_loc_conf_t, upstream.cache_use_stale),
427
&ngx_http_proxy_next_upstream_masks },
428
429
{ ngx_string("proxy_cache_methods"),
430
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE,
431
ngx_conf_set_bitmask_slot,
432
NGX_HTTP_LOC_CONF_OFFSET,
433
offsetof(ngx_http_proxy_loc_conf_t, upstream.cache_methods),
434
&ngx_http_upstream_cache_method_mask },
435
436
{ ngx_string("proxy_cache_lock"),
437
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
438
ngx_conf_set_flag_slot,
439
NGX_HTTP_LOC_CONF_OFFSET,
440
offsetof(ngx_http_proxy_loc_conf_t, upstream.cache_lock),
441
NULL },
442
443
{ ngx_string("proxy_cache_lock_timeout"),
444
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
445
ngx_conf_set_msec_slot,
446
NGX_HTTP_LOC_CONF_OFFSET,
447
offsetof(ngx_http_proxy_loc_conf_t, upstream.cache_lock_timeout),
448
NULL },
449
450
#endif
451
452
{ ngx_string("proxy_temp_path"),
453
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1234,
454
ngx_conf_set_path_slot,
455
NGX_HTTP_LOC_CONF_OFFSET,
456
offsetof(ngx_http_proxy_loc_conf_t, upstream.temp_path),
457
NULL },
458
459
{ ngx_string("proxy_max_temp_file_size"),
460
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
461
ngx_conf_set_size_slot,
462
NGX_HTTP_LOC_CONF_OFFSET,
463
offsetof(ngx_http_proxy_loc_conf_t, upstream.max_temp_file_size_conf),
464
NULL },
465
466
{ ngx_string("proxy_temp_file_write_size"),
467
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
468
ngx_conf_set_size_slot,
469
NGX_HTTP_LOC_CONF_OFFSET,
470
offsetof(ngx_http_proxy_loc_conf_t, upstream.temp_file_write_size_conf),
471
NULL },
472
473
{ ngx_string("proxy_next_upstream"),
474
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE,
475
ngx_conf_set_bitmask_slot,
476
NGX_HTTP_LOC_CONF_OFFSET,
477
offsetof(ngx_http_proxy_loc_conf_t, upstream.next_upstream),
478
&ngx_http_proxy_next_upstream_masks },
479
480
{ ngx_string("proxy_pass_header"),
481
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
482
ngx_conf_set_str_array_slot,
483
NGX_HTTP_LOC_CONF_OFFSET,
484
offsetof(ngx_http_proxy_loc_conf_t, upstream.pass_headers),
485
NULL },
486
487
{ ngx_string("proxy_hide_header"),
488
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
489
ngx_conf_set_str_array_slot,
490
NGX_HTTP_LOC_CONF_OFFSET,
491
offsetof(ngx_http_proxy_loc_conf_t, upstream.hide_headers),
492
NULL },
493
494
{ ngx_string("proxy_ignore_headers"),
495
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE,
496
ngx_conf_set_bitmask_slot,
497
NGX_HTTP_LOC_CONF_OFFSET,
498
offsetof(ngx_http_proxy_loc_conf_t, upstream.ignore_headers),
499
&ngx_http_upstream_ignore_headers_masks },
500
501
{ ngx_string("proxy_http_version"),
502
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
503
ngx_conf_set_enum_slot,
504
NGX_HTTP_LOC_CONF_OFFSET,
505
offsetof(ngx_http_proxy_loc_conf_t, http_version),
506
&ngx_http_proxy_http_version },
507
508
#if (NGX_HTTP_SSL)
509
510
{ ngx_string("proxy_ssl_session_reuse"),
511
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
512
ngx_conf_set_flag_slot,
513
NGX_HTTP_LOC_CONF_OFFSET,
514
offsetof(ngx_http_proxy_loc_conf_t, upstream.ssl_session_reuse),
515
NULL },
516
517
#endif
518
519
ngx_null_command
520
};
521
522
523
static ngx_http_module_t ngx_http_proxy_module_ctx = {
524
ngx_http_proxy_add_variables, /* preconfiguration */
525
NULL, /* postconfiguration */
526
527
NULL, /* create main configuration */
528
NULL, /* init main configuration */
529
530
NULL, /* create server configuration */
531
NULL, /* merge server configuration */
532
533
ngx_http_proxy_create_loc_conf, /* create location configuration */
534
ngx_http_proxy_merge_loc_conf /* merge location configuration */
535
};
536
537
538
ngx_module_t ngx_http_proxy_module = {
539
NGX_MODULE_V1,
540
&ngx_http_proxy_module_ctx, /* module context */
541
ngx_http_proxy_commands, /* module directives */
542
NGX_HTTP_MODULE, /* module type */
543
NULL, /* init master */
544
NULL, /* init module */
545
NULL, /* init process */
546
NULL, /* init thread */
547
NULL, /* exit thread */
548
NULL, /* exit process */
549
NULL, /* exit master */
550
NGX_MODULE_V1_PADDING
551
};
552
553
554
static char ngx_http_proxy_version[] = " HTTP/1.0" CRLF;
555
static char ngx_http_proxy_version_11[] = " HTTP/1.1" CRLF;
556
557
558
static ngx_keyval_t ngx_http_proxy_headers[] = {
559
{ ngx_string("Host"), ngx_string("$proxy_host") },
560
{ ngx_string("Connection"), ngx_string("close") },
561
{ ngx_string("Keep-Alive"), ngx_string("") },
562
{ ngx_string("Expect"), ngx_string("") },
563
{ ngx_string("Upgrade"), ngx_string("") },
564
{ ngx_null_string, ngx_null_string }
565
};
566
567
568
static ngx_str_t ngx_http_proxy_hide_headers[] = {
569
ngx_string("Date"),
570
ngx_string("Server"),
571
ngx_string("X-Pad"),
572
ngx_string("X-Accel-Expires"),
573
ngx_string("X-Accel-Redirect"),
574
ngx_string("X-Accel-Limit-Rate"),
575
ngx_string("X-Accel-Buffering"),
576
ngx_string("X-Accel-Charset"),
577
ngx_null_string
578
};
579
580
581
#if (NGX_HTTP_CACHE)
582
583
static ngx_keyval_t ngx_http_proxy_cache_headers[] = {
584
{ ngx_string("Host"), ngx_string("$proxy_host") },
585
{ ngx_string("Connection"), ngx_string("close") },
586
{ ngx_string("Keep-Alive"), ngx_string("") },
587
{ ngx_string("Expect"), ngx_string("") },
588
{ ngx_string("Upgrade"), ngx_string("") },
589
{ ngx_string("If-Modified-Since"), ngx_string("") },
590
{ ngx_string("If-Unmodified-Since"), ngx_string("") },
591
{ ngx_string("If-None-Match"), ngx_string("") },
592
{ ngx_string("If-Match"), ngx_string("") },
593
{ ngx_string("Range"), ngx_string("") },
594
{ ngx_string("If-Range"), ngx_string("") },
595
{ ngx_null_string, ngx_null_string }
596
};
597
598
#endif
599
600
601
static ngx_http_variable_t ngx_http_proxy_vars[] = {
602
603
{ ngx_string("proxy_host"), NULL, ngx_http_proxy_host_variable, 0,
604
NGX_HTTP_VAR_CHANGEABLE|NGX_HTTP_VAR_NOCACHEABLE|NGX_HTTP_VAR_NOHASH, 0 },
605
606
{ ngx_string("proxy_port"), NULL, ngx_http_proxy_port_variable, 0,
607
NGX_HTTP_VAR_CHANGEABLE|NGX_HTTP_VAR_NOCACHEABLE|NGX_HTTP_VAR_NOHASH, 0 },
608
609
{ ngx_string("proxy_add_x_forwarded_for"), NULL,
610
ngx_http_proxy_add_x_forwarded_for_variable, 0, NGX_HTTP_VAR_NOHASH, 0 },
611
612
#if 0
613
{ ngx_string("proxy_add_via"), NULL, NULL, 0, NGX_HTTP_VAR_NOHASH, 0 },
614
#endif
615
616
{ ngx_string("proxy_internal_body_length"), NULL,
617
ngx_http_proxy_internal_body_length_variable, 0, NGX_HTTP_VAR_NOHASH, 0 },
618
619
{ ngx_null_string, NULL, NULL, 0, 0, 0 }
620
};
621
622
623
static ngx_path_init_t ngx_http_proxy_temp_path = {
624
ngx_string(NGX_HTTP_PROXY_TEMP_PATH), { 1, 2, 0 }
625
};
626
627
628
static ngx_int_t
629
ngx_http_proxy_handler(ngx_http_request_t *r)
630
{
631
ngx_int_t rc;
632
ngx_http_upstream_t *u;
633
ngx_http_proxy_ctx_t *ctx;
634
ngx_http_proxy_loc_conf_t *plcf;
635
636
if (ngx_http_upstream_create(r) != NGX_OK) {
637
return NGX_HTTP_INTERNAL_SERVER_ERROR;
638
}
639
640
ctx = ngx_pcalloc(r->pool, sizeof(ngx_http_proxy_ctx_t));
641
if (ctx == NULL) {
642
return NGX_ERROR;
643
}
644
645
ngx_http_set_ctx(r, ctx, ngx_http_proxy_module);
646
647
plcf = ngx_http_get_module_loc_conf(r, ngx_http_proxy_module);
648
649
u = r->upstream;
650
651
if (plcf->proxy_lengths == NULL) {
652
ctx->vars = plcf->vars;
653
u->schema = plcf->vars.schema;
654
#if (NGX_HTTP_SSL)
655
u->ssl = (plcf->upstream.ssl != NULL);
656
#endif
657
658
} else {
659
if (ngx_http_proxy_eval(r, ctx, plcf) != NGX_OK) {
660
return NGX_HTTP_INTERNAL_SERVER_ERROR;
661
}
662
}
663
664
u->output.tag = (ngx_buf_tag_t) &ngx_http_proxy_module;
665
666
u->conf = &plcf->upstream;
667
668
#if (NGX_HTTP_CACHE)
669
u->create_key = ngx_http_proxy_create_key;
670
#endif
671
u->create_request = ngx_http_proxy_create_request;
672
u->reinit_request = ngx_http_proxy_reinit_request;
673
u->process_header = ngx_http_proxy_process_status_line;
674
u->abort_request = ngx_http_proxy_abort_request;
675
u->finalize_request = ngx_http_proxy_finalize_request;
676
r->state = 0;
677
678
if (plcf->redirects) {
679
u->rewrite_redirect = ngx_http_proxy_rewrite_redirect;
680
}
681
682
if (plcf->cookie_domains || plcf->cookie_paths) {
683
u->rewrite_cookie = ngx_http_proxy_rewrite_cookie;
684
}
685
686
u->buffering = plcf->upstream.buffering;
687
688
u->pipe = ngx_pcalloc(r->pool, sizeof(ngx_event_pipe_t));
689
if (u->pipe == NULL) {
690
return NGX_HTTP_INTERNAL_SERVER_ERROR;
691
}
692
693
u->pipe->input_filter = ngx_http_proxy_copy_filter;
694
u->pipe->input_ctx = r;
695
696
u->input_filter_init = ngx_http_proxy_input_filter_init;
697
u->input_filter = ngx_http_proxy_non_buffered_copy_filter;
698
u->input_filter_ctx = r;
699
700
u->accel = 1;
701
702
rc = ngx_http_read_client_request_body(r, ngx_http_upstream_init);
703
704
if (rc >= NGX_HTTP_SPECIAL_RESPONSE) {
705
return rc;
706
}
707
708
return NGX_DONE;
709
}
710
711
712
static ngx_int_t
713
ngx_http_proxy_eval(ngx_http_request_t *r, ngx_http_proxy_ctx_t *ctx,
714
ngx_http_proxy_loc_conf_t *plcf)
715
{
716
u_char *p;
717
size_t add;
718
u_short port;
719
ngx_str_t proxy;
720
ngx_url_t url;
721
ngx_http_upstream_t *u;
722
723
if (ngx_http_script_run(r, &proxy, plcf->proxy_lengths->elts, 0,
724
plcf->proxy_values->elts)
725
== NULL)
726
{
727
return NGX_ERROR;
728
}
729
730
if (proxy.len > 7
731
&& ngx_strncasecmp(proxy.data, (u_char *) "http://", 7) == 0)
732
{
733
add = 7;
734
port = 80;
735
736
#if (NGX_HTTP_SSL)
737
738
} else if (proxy.len > 8
739
&& ngx_strncasecmp(proxy.data, (u_char *) "https://", 8) == 0)
740
{
741
add = 8;
742
port = 443;
743
r->upstream->ssl = 1;
744
745
#endif
746
747
} else {
748
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
749
"invalid URL prefix in \"%V\"", &proxy);
750
return NGX_ERROR;
751
}
752
753
u = r->upstream;
754
755
u->schema.len = add;
756
u->schema.data = proxy.data;
757
758
ngx_memzero(&url, sizeof(ngx_url_t));
759
760
url.url.len = proxy.len - add;
761
url.url.data = proxy.data + add;
762
url.default_port = port;
763
url.uri_part = 1;
764
url.no_resolve = 1;
765
766
if (ngx_parse_url(r->pool, &url) != NGX_OK) {
767
if (url.err) {
768
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
769
"%s in upstream \"%V\"", url.err, &url.url);
770
}
771
772
return NGX_ERROR;
773
}
774
775
if (url.uri.len) {
776
if (url.uri.data[0] == '?') {
777
p = ngx_pnalloc(r->pool, url.uri.len + 1);
778
if (p == NULL) {
779
return NGX_ERROR;
780
}
781
782
*p++ = '/';
783
ngx_memcpy(p, url.uri.data, url.uri.len);
784
785
url.uri.len++;
786
url.uri.data = p - 1;
787
}
788
}
789
790
ctx->vars.key_start = u->schema;
791
792
ngx_http_proxy_set_vars(&url, &ctx->vars);
793
794
u->resolved = ngx_pcalloc(r->pool, sizeof(ngx_http_upstream_resolved_t));
795
if (u->resolved == NULL) {
796
return NGX_ERROR;
797
}
798
799
if (url.addrs && url.addrs[0].sockaddr) {
800
u->resolved->sockaddr = url.addrs[0].sockaddr;
801
u->resolved->socklen = url.addrs[0].socklen;
802
u->resolved->naddrs = 1;
803
u->resolved->host = url.addrs[0].name;
804
805
} else {
806
u->resolved->host = url.host;
807
u->resolved->port = (in_port_t) (url.no_port ? port : url.port);
808
u->resolved->no_port = url.no_port;
809
}
810
811
return NGX_OK;
812
}
813
814
815
#if (NGX_HTTP_CACHE)
816
817
static ngx_int_t
818
ngx_http_proxy_create_key(ngx_http_request_t *r)
819
{
820
size_t len, loc_len;
821
u_char *p;
822
uintptr_t escape;
823
ngx_str_t *key;
824
ngx_http_upstream_t *u;
825
ngx_http_proxy_ctx_t *ctx;
826
ngx_http_proxy_loc_conf_t *plcf;
827
828
u = r->upstream;
829
830
plcf = ngx_http_get_module_loc_conf(r, ngx_http_proxy_module);
831
832
ctx = ngx_http_get_module_ctx(r, ngx_http_proxy_module);
833
834
key = ngx_array_push(&r->cache->keys);
835
if (key == NULL) {
836
return NGX_ERROR;
837
}
838
839
if (plcf->cache_key.value.len) {
840
841
if (ngx_http_complex_value(r, &plcf->cache_key, key) != NGX_OK) {
842
return NGX_ERROR;
843
}
844
845
return NGX_OK;
846
}
847
848
*key = ctx->vars.key_start;
849
850
key = ngx_array_push(&r->cache->keys);
851
if (key == NULL) {
852
return NGX_ERROR;
853
}
854
855
if (plcf->proxy_lengths && ctx->vars.uri.len) {
856
857
*key = ctx->vars.uri;
858
u->uri = ctx->vars.uri;
859
860
return NGX_OK;
861
862
} else if (ctx->vars.uri.len == 0 && r->valid_unparsed_uri && r == r->main)
863
{
864
*key = r->unparsed_uri;
865
u->uri = r->unparsed_uri;
866
867
return NGX_OK;
868
}
869
870
loc_len = (r->valid_location && ctx->vars.uri.len) ? plcf->location.len : 0;
871
872
if (r->quoted_uri || r->internal) {
873
escape = 2 * ngx_escape_uri(NULL, r->uri.data + loc_len,
874
r->uri.len - loc_len, NGX_ESCAPE_URI);
875
} else {
876
escape = 0;
877
}
878
879
len = ctx->vars.uri.len + r->uri.len - loc_len + escape
880
+ sizeof("?") - 1 + r->args.len;
881
882
p = ngx_pnalloc(r->pool, len);
883
if (p == NULL) {
884
return NGX_ERROR;
885
}
886
887
key->data = p;
888
889
if (r->valid_location) {
890
p = ngx_copy(p, ctx->vars.uri.data, ctx->vars.uri.len);
891
}
892
893
if (escape) {
894
ngx_escape_uri(p, r->uri.data + loc_len,
895
r->uri.len - loc_len, NGX_ESCAPE_URI);
896
p += r->uri.len - loc_len + escape;
897
898
} else {
899
p = ngx_copy(p, r->uri.data + loc_len, r->uri.len - loc_len);
900
}
901
902
if (r->args.len > 0) {
903
*p++ = '?';
904
p = ngx_copy(p, r->args.data, r->args.len);
905
}
906
907
key->len = p - key->data;
908
u->uri = *key;
909
910
return NGX_OK;
911
}
912
913
#endif
914
915
916
static ngx_int_t
917
ngx_http_proxy_create_request(ngx_http_request_t *r)
918
{
919
size_t len, uri_len, loc_len, body_len;
920
uintptr_t escape;
921
ngx_buf_t *b;
922
ngx_str_t method;
923
ngx_uint_t i, unparsed_uri;
924
ngx_chain_t *cl, *body;
925
ngx_list_part_t *part;
926
ngx_table_elt_t *header;
927
ngx_http_upstream_t *u;
928
ngx_http_proxy_ctx_t *ctx;
929
ngx_http_script_code_pt code;
930
ngx_http_script_engine_t e, le;
931
ngx_http_proxy_loc_conf_t *plcf;
932
ngx_http_script_len_code_pt lcode;
933
934
u = r->upstream;
935
936
plcf = ngx_http_get_module_loc_conf(r, ngx_http_proxy_module);
937
938
if (u->method.len) {
939
/* HEAD was changed to GET to cache response */
940
method = u->method;
941
method.len++;
942
943
} else if (plcf->method.len) {
944
method = plcf->method;
945
946
} else {
947
method = r->method_name;
948
method.len++;
949
}
950
951
ctx = ngx_http_get_module_ctx(r, ngx_http_proxy_module);
952
953
if (method.len == 5
954
&& ngx_strncasecmp(method.data, (u_char *) "HEAD ", 5) == 0)
955
{
956
ctx->head = 1;
957
}
958
959
len = method.len + sizeof(ngx_http_proxy_version) - 1 + sizeof(CRLF) - 1;
960
961
escape = 0;
962
loc_len = 0;
963
unparsed_uri = 0;
964
965
if (plcf->proxy_lengths && ctx->vars.uri.len) {
966
uri_len = ctx->vars.uri.len;
967
968
} else if (ctx->vars.uri.len == 0 && r->valid_unparsed_uri && r == r->main)
969
{
970
unparsed_uri = 1;
971
uri_len = r->unparsed_uri.len;
972
973
} else {
974
loc_len = (r->valid_location && ctx->vars.uri.len) ?
975
plcf->location.len : 0;
976
977
if (r->quoted_uri || r->space_in_uri || r->internal) {
978
escape = 2 * ngx_escape_uri(NULL, r->uri.data + loc_len,
979
r->uri.len - loc_len, NGX_ESCAPE_URI);
980
}
981
982
uri_len = ctx->vars.uri.len + r->uri.len - loc_len + escape
983
+ sizeof("?") - 1 + r->args.len;
984
}
985
986
if (uri_len == 0) {
987
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
988
"zero length URI to proxy");
989
return NGX_ERROR;
990
}
991
992
len += uri_len;
993
994
ngx_http_script_flush_no_cacheable_variables(r, plcf->flushes);
995
996
if (plcf->body_set_len) {
997
le.ip = plcf->body_set_len->elts;
998
le.request = r;
999
le.flushed = 1;
1000
body_len = 0;
1001
1002
while (*(uintptr_t *) le.ip) {
1003
lcode = *(ngx_http_script_len_code_pt *) le.ip;
1004
body_len += lcode(&le);
1005
}
1006
1007
ctx->internal_body_length = body_len;
1008
len += body_len;
1009
}
1010
1011
le.ip = plcf->headers_set_len->elts;
1012
le.request = r;
1013
le.flushed = 1;
1014
1015
while (*(uintptr_t *) le.ip) {
1016
while (*(uintptr_t *) le.ip) {
1017
lcode = *(ngx_http_script_len_code_pt *) le.ip;
1018
len += lcode(&le);
1019
}
1020
le.ip += sizeof(uintptr_t);
1021
}
1022
1023
1024
if (plcf->upstream.pass_request_headers) {
1025
part = &r->headers_in.headers.part;
1026
header = part->elts;
1027
1028
for (i = 0; /* void */; i++) {
1029
1030
if (i >= part->nelts) {
1031
if (part->next == NULL) {
1032
break;
1033
}
1034
1035
part = part->next;
1036
header = part->elts;
1037
i = 0;
1038
}
1039
1040
if (ngx_hash_find(&plcf->headers_set_hash, header[i].hash,
1041
header[i].lowcase_key, header[i].key.len))
1042
{
1043
continue;
1044
}
1045
1046
len += header[i].key.len + sizeof(": ") - 1
1047
+ header[i].value.len + sizeof(CRLF) - 1;
1048
}
1049
}
1050
1051
1052
b = ngx_create_temp_buf(r->pool, len);
1053
if (b == NULL) {
1054
return NGX_ERROR;
1055
}
1056
1057
cl = ngx_alloc_chain_link(r->pool);
1058
if (cl == NULL) {
1059
return NGX_ERROR;
1060
}
1061
1062
cl->buf = b;
1063
1064
1065
/* the request line */
1066
1067
b->last = ngx_copy(b->last, method.data, method.len);
1068
1069
u->uri.data = b->last;
1070
1071
if (plcf->proxy_lengths && ctx->vars.uri.len) {
1072
b->last = ngx_copy(b->last, ctx->vars.uri.data, ctx->vars.uri.len);
1073
1074
} else if (unparsed_uri) {
1075
b->last = ngx_copy(b->last, r->unparsed_uri.data, r->unparsed_uri.len);
1076
1077
} else {
1078
if (r->valid_location) {
1079
b->last = ngx_copy(b->last, ctx->vars.uri.data, ctx->vars.uri.len);
1080
}
1081
1082
if (escape) {
1083
ngx_escape_uri(b->last, r->uri.data + loc_len,
1084
r->uri.len - loc_len, NGX_ESCAPE_URI);
1085
b->last += r->uri.len - loc_len + escape;
1086
1087
} else {
1088
b->last = ngx_copy(b->last, r->uri.data + loc_len,
1089
r->uri.len - loc_len);
1090
}
1091
1092
if (r->args.len > 0) {
1093
*b->last++ = '?';
1094
b->last = ngx_copy(b->last, r->args.data, r->args.len);
1095
}
1096
}
1097
1098
u->uri.len = b->last - u->uri.data;
1099
1100
if (plcf->http_version == NGX_HTTP_VERSION_11) {
1101
b->last = ngx_cpymem(b->last, ngx_http_proxy_version_11,
1102
sizeof(ngx_http_proxy_version_11) - 1);
1103
1104
} else {
1105
b->last = ngx_cpymem(b->last, ngx_http_proxy_version,
1106
sizeof(ngx_http_proxy_version) - 1);
1107
}
1108
1109
ngx_memzero(&e, sizeof(ngx_http_script_engine_t));
1110
1111
e.ip = plcf->headers_set->elts;
1112
e.pos = b->last;
1113
e.request = r;
1114
e.flushed = 1;
1115
1116
le.ip = plcf->headers_set_len->elts;
1117
1118
while (*(uintptr_t *) le.ip) {
1119
lcode = *(ngx_http_script_len_code_pt *) le.ip;
1120
1121
/* skip the header line name length */
1122
(void) lcode(&le);
1123
1124
if (*(ngx_http_script_len_code_pt *) le.ip) {
1125
1126
for (len = 0; *(uintptr_t *) le.ip; len += lcode(&le)) {
1127
lcode = *(ngx_http_script_len_code_pt *) le.ip;
1128
}
1129
1130
e.skip = (len == sizeof(CRLF) - 1) ? 1 : 0;
1131
1132
} else {
1133
e.skip = 0;
1134
}
1135
1136
le.ip += sizeof(uintptr_t);
1137
1138
while (*(uintptr_t *) e.ip) {
1139
code = *(ngx_http_script_code_pt *) e.ip;
1140
code((ngx_http_script_engine_t *) &e);
1141
}
1142
e.ip += sizeof(uintptr_t);
1143
}
1144
1145
b->last = e.pos;
1146
1147
1148
if (plcf->upstream.pass_request_headers) {
1149
part = &r->headers_in.headers.part;
1150
header = part->elts;
1151
1152
for (i = 0; /* void */; i++) {
1153
1154
if (i >= part->nelts) {
1155
if (part->next == NULL) {
1156
break;
1157
}
1158
1159
part = part->next;
1160
header = part->elts;
1161
i = 0;
1162
}
1163
1164
if (ngx_hash_find(&plcf->headers_set_hash, header[i].hash,
1165
header[i].lowcase_key, header[i].key.len))
1166
{
1167
continue;
1168
}
1169
1170
b->last = ngx_copy(b->last, header[i].key.data, header[i].key.len);
1171
1172
*b->last++ = ':'; *b->last++ = ' ';
1173
1174
b->last = ngx_copy(b->last, header[i].value.data,
1175
header[i].value.len);
1176
1177
*b->last++ = CR; *b->last++ = LF;
1178
1179
ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
1180
"http proxy header: \"%V: %V\"",
1181
&header[i].key, &header[i].value);
1182
}
1183
}
1184
1185
1186
/* add "\r\n" at the header end */
1187
*b->last++ = CR; *b->last++ = LF;
1188
1189
if (plcf->body_set) {
1190
e.ip = plcf->body_set->elts;
1191
e.pos = b->last;
1192
1193
while (*(uintptr_t *) e.ip) {
1194
code = *(ngx_http_script_code_pt *) e.ip;
1195
code((ngx_http_script_engine_t *) &e);
1196
}
1197
1198
b->last = e.pos;
1199
}
1200
1201
ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
1202
"http proxy header:\n\"%*s\"",
1203
(size_t) (b->last - b->pos), b->pos);
1204
1205
if (plcf->body_set == NULL && plcf->upstream.pass_request_body) {
1206
1207
body = u->request_bufs;
1208
u->request_bufs = cl;
1209
1210
while (body) {
1211
b = ngx_alloc_buf(r->pool);
1212
if (b == NULL) {
1213
return NGX_ERROR;
1214
}
1215
1216
ngx_memcpy(b, body->buf, sizeof(ngx_buf_t));
1217
1218
cl->next = ngx_alloc_chain_link(r->pool);
1219
if (cl->next == NULL) {
1220
return NGX_ERROR;
1221
}
1222
1223
cl = cl->next;
1224
cl->buf = b;
1225
1226
body = body->next;
1227
}
1228
1229
} else {
1230
u->request_bufs = cl;
1231
}
1232
1233
b->flush = 1;
1234
cl->next = NULL;
1235
1236
return NGX_OK;
1237
}
1238
1239
1240
static ngx_int_t
1241
ngx_http_proxy_reinit_request(ngx_http_request_t *r)
1242
{
1243
ngx_http_proxy_ctx_t *ctx;
1244
1245
ctx = ngx_http_get_module_ctx(r, ngx_http_proxy_module);
1246
1247
if (ctx == NULL) {
1248
return NGX_OK;
1249
}
1250
1251
ctx->status.code = 0;
1252
ctx->status.count = 0;
1253
ctx->status.start = NULL;
1254
ctx->status.end = NULL;
1255
ctx->state = 0;
1256
1257
r->upstream->process_header = ngx_http_proxy_process_status_line;
1258
r->upstream->pipe->input_filter = ngx_http_proxy_copy_filter;
1259
r->upstream->input_filter = ngx_http_proxy_non_buffered_copy_filter;
1260
r->state = 0;
1261
1262
return NGX_OK;
1263
}
1264
1265
1266
static ngx_int_t
1267
ngx_http_proxy_process_status_line(ngx_http_request_t *r)
1268
{
1269
size_t len;
1270
ngx_int_t rc;
1271
ngx_http_upstream_t *u;
1272
ngx_http_proxy_ctx_t *ctx;
1273
1274
ctx = ngx_http_get_module_ctx(r, ngx_http_proxy_module);
1275
1276
if (ctx == NULL) {
1277
return NGX_ERROR;
1278
}
1279
1280
u = r->upstream;
1281
1282
rc = ngx_http_parse_status_line(r, &u->buffer, &ctx->status);
1283
1284
if (rc == NGX_AGAIN) {
1285
return rc;
1286
}
1287
1288
if (rc == NGX_ERROR) {
1289
1290
#if (NGX_HTTP_CACHE)
1291
1292
if (r->cache) {
1293
r->http_version = NGX_HTTP_VERSION_9;
1294
return NGX_OK;
1295
}
1296
1297
#endif
1298
1299
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
1300
"upstream sent no valid HTTP/1.0 header");
1301
1302
#if 0
1303
if (u->accel) {
1304
return NGX_HTTP_UPSTREAM_INVALID_HEADER;
1305
}
1306
#endif
1307
1308
r->http_version = NGX_HTTP_VERSION_9;
1309
u->state->status = NGX_HTTP_OK;
1310
u->headers_in.connection_close = 1;
1311
1312
return NGX_OK;
1313
}
1314
1315
if (u->state) {
1316
u->state->status = ctx->status.code;
1317
}
1318
1319
u->headers_in.status_n = ctx->status.code;
1320
1321
len = ctx->status.end - ctx->status.start;
1322
u->headers_in.status_line.len = len;
1323
1324
u->headers_in.status_line.data = ngx_pnalloc(r->pool, len);
1325
if (u->headers_in.status_line.data == NULL) {
1326
return NGX_ERROR;
1327
}
1328
1329
ngx_memcpy(u->headers_in.status_line.data, ctx->status.start, len);
1330
1331
ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
1332
"http proxy status %ui \"%V\"",
1333
u->headers_in.status_n, &u->headers_in.status_line);
1334
1335
if (ctx->status.http_version < NGX_HTTP_VERSION_11) {
1336
u->headers_in.connection_close = 1;
1337
}
1338
1339
u->process_header = ngx_http_proxy_process_header;
1340
1341
return ngx_http_proxy_process_header(r);
1342
}
1343
1344
1345
static ngx_int_t
1346
ngx_http_proxy_process_header(ngx_http_request_t *r)
1347
{
1348
ngx_int_t rc;
1349
ngx_table_elt_t *h;
1350
ngx_http_upstream_t *u;
1351
ngx_http_proxy_ctx_t *ctx;
1352
ngx_http_upstream_header_t *hh;
1353
ngx_http_upstream_main_conf_t *umcf;
1354
1355
umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module);
1356
1357
for ( ;; ) {
1358
1359
rc = ngx_http_parse_header_line(r, &r->upstream->buffer, 1);
1360
1361
if (rc == NGX_OK) {
1362
1363
/* a header line has been parsed successfully */
1364
1365
h = ngx_list_push(&r->upstream->headers_in.headers);
1366
if (h == NULL) {
1367
return NGX_ERROR;
1368
}
1369
1370
h->hash = r->header_hash;
1371
1372
h->key.len = r->header_name_end - r->header_name_start;
1373
h->value.len = r->header_end - r->header_start;
1374
1375
h->key.data = ngx_pnalloc(r->pool,
1376
h->key.len + 1 + h->value.len + 1 + h->key.len);
1377
if (h->key.data == NULL) {
1378
return NGX_ERROR;
1379
}
1380
1381
h->value.data = h->key.data + h->key.len + 1;
1382
h->lowcase_key = h->key.data + h->key.len + 1 + h->value.len + 1;
1383
1384
ngx_memcpy(h->key.data, r->header_name_start, h->key.len);
1385
h->key.data[h->key.len] = '\0';
1386
ngx_memcpy(h->value.data, r->header_start, h->value.len);
1387
h->value.data[h->value.len] = '\0';
1388
1389
if (h->key.len == r->lowcase_index) {
1390
ngx_memcpy(h->lowcase_key, r->lowcase_header, h->key.len);
1391
1392
} else {
1393
ngx_strlow(h->lowcase_key, h->key.data, h->key.len);
1394
}
1395
1396
hh = ngx_hash_find(&umcf->headers_in_hash, h->hash,
1397
h->lowcase_key, h->key.len);
1398
1399
if (hh && hh->handler(r, h, hh->offset) != NGX_OK) {
1400
return NGX_ERROR;
1401
}
1402
1403
ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
1404
"http proxy header: \"%V: %V\"",
1405
&h->key, &h->value);
1406
1407
continue;
1408
}
1409
1410
if (rc == NGX_HTTP_PARSE_HEADER_DONE) {
1411
1412
/* a whole header has been parsed successfully */
1413
1414
ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
1415
"http proxy header done");
1416
1417
/*
1418
* if no "Server" and "Date" in header line,
1419
* then add the special empty headers
1420
*/
1421
1422
if (r->upstream->headers_in.server == NULL) {
1423
h = ngx_list_push(&r->upstream->headers_in.headers);
1424
if (h == NULL) {
1425
return NGX_ERROR;
1426
}
1427
1428
h->hash = ngx_hash(ngx_hash(ngx_hash(ngx_hash(
1429
ngx_hash('s', 'e'), 'r'), 'v'), 'e'), 'r');
1430
1431
ngx_str_set(&h->key, "Server");
1432
ngx_str_null(&h->value);
1433
h->lowcase_key = (u_char *) "server";
1434
}
1435
1436
if (r->upstream->headers_in.date == NULL) {
1437
h = ngx_list_push(&r->upstream->headers_in.headers);
1438
if (h == NULL) {
1439
return NGX_ERROR;
1440
}
1441
1442
h->hash = ngx_hash(ngx_hash(ngx_hash('d', 'a'), 't'), 'e');
1443
1444
ngx_str_set(&h->key, "Date");
1445
ngx_str_null(&h->value);
1446
h->lowcase_key = (u_char *) "date";
1447
}
1448
1449
/* clear content length if response is chunked */
1450
1451
u = r->upstream;
1452
1453
if (u->headers_in.chunked) {
1454
u->headers_in.content_length_n = -1;
1455
}
1456
1457
/*
1458
* set u->keepalive if response has no body; this allows to keep
1459
* connections alive in case of r->header_only or X-Accel-Redirect
1460
*/
1461
1462
ctx = ngx_http_get_module_ctx(r, ngx_http_proxy_module);
1463
1464
if (u->headers_in.status_n == NGX_HTTP_NO_CONTENT
1465
|| u->headers_in.status_n == NGX_HTTP_NOT_MODIFIED
1466
|| ctx->head
1467
|| (!u->headers_in.chunked
1468
&& u->headers_in.content_length_n == 0))
1469
{
1470
u->keepalive = !u->headers_in.connection_close;
1471
}
1472
1473
return NGX_OK;
1474
}
1475
1476
if (rc == NGX_AGAIN) {
1477
return NGX_AGAIN;
1478
}
1479
1480
/* there was error while a header line parsing */
1481
1482
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
1483
"upstream sent invalid header");
1484
1485
return NGX_HTTP_UPSTREAM_INVALID_HEADER;
1486
}
1487
}
1488
1489
1490
static ngx_int_t
1491
ngx_http_proxy_input_filter_init(void *data)
1492
{
1493
ngx_http_request_t *r = data;
1494
ngx_http_upstream_t *u;
1495
ngx_http_proxy_ctx_t *ctx;
1496
1497
u = r->upstream;
1498
ctx = ngx_http_get_module_ctx(r, ngx_http_proxy_module);
1499
1500
if (ctx == NULL) {
1501
return NGX_ERROR;
1502
}
1503
1504
ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
1505
"http proxy filter init s:%d h:%d c:%d l:%O",
1506
u->headers_in.status_n, ctx->head, u->headers_in.chunked,
1507
u->headers_in.content_length_n);
1508
1509
/* as per RFC2616, 4.4 Message Length */
1510
1511
if (u->headers_in.status_n == NGX_HTTP_NO_CONTENT
1512
|| u->headers_in.status_n == NGX_HTTP_NOT_MODIFIED
1513
|| ctx->head)
1514
{
1515
/* 1xx, 204, and 304 and replies to HEAD requests */
1516
/* no 1xx since we don't send Expect and Upgrade */
1517
1518
u->pipe->length = 0;
1519
u->length = 0;
1520
u->keepalive = !u->headers_in.connection_close;
1521
1522
} else if (u->headers_in.chunked) {
1523
/* chunked */
1524
1525
u->pipe->input_filter = ngx_http_proxy_chunked_filter;
1526
u->pipe->length = 3; /* "0" LF LF */
1527
1528
u->input_filter = ngx_http_proxy_non_buffered_chunked_filter;
1529
u->length = -1;
1530
1531
} else if (u->headers_in.content_length_n == 0) {
1532
/* empty body: special case as filter won't be called */
1533
1534
u->pipe->length = 0;
1535
u->length = 0;
1536
u->keepalive = !u->headers_in.connection_close;
1537
1538
} else {
1539
/* content length or connection close */
1540
1541
u->pipe->length = u->headers_in.content_length_n;
1542
u->length = u->headers_in.content_length_n;
1543
}
1544
1545
return NGX_OK;
1546
}
1547
1548
1549
static ngx_int_t
1550
ngx_http_proxy_copy_filter(ngx_event_pipe_t *p, ngx_buf_t *buf)
1551
{
1552
ngx_buf_t *b;
1553
ngx_chain_t *cl;
1554
ngx_http_request_t *r;
1555
1556
if (buf->pos == buf->last) {
1557
return NGX_OK;
1558
}
1559
1560
if (p->free) {
1561
cl = p->free;
1562
b = cl->buf;
1563
p->free = cl->next;
1564
ngx_free_chain(p->pool, cl);
1565
1566
} else {
1567
b = ngx_alloc_buf(p->pool);
1568
if (b == NULL) {
1569
return NGX_ERROR;
1570
}
1571
}
1572
1573
ngx_memcpy(b, buf, sizeof(ngx_buf_t));
1574
b->shadow = buf;
1575
b->tag = p->tag;
1576
b->last_shadow = 1;
1577
b->recycled = 1;
1578
buf->shadow = b;
1579
1580
cl = ngx_alloc_chain_link(p->pool);
1581
if (cl == NULL) {
1582
return NGX_ERROR;
1583
}
1584
1585
cl->buf = b;
1586
cl->next = NULL;
1587
1588
ngx_log_debug1(NGX_LOG_DEBUG_EVENT, p->log, 0, "input buf #%d", b->num);
1589
1590
if (p->in) {
1591
*p->last_in = cl;
1592
} else {
1593
p->in = cl;
1594
}
1595
p->last_in = &cl->next;
1596
1597
if (p->length == -1) {
1598
return NGX_OK;
1599
}
1600
1601
p->length -= b->last - b->pos;
1602
1603
if (p->length == 0) {
1604
r = p->input_ctx;
1605
p->upstream_done = 1;
1606
r->upstream->keepalive = !r->upstream->headers_in.connection_close;
1607
1608
} else if (p->length < 0) {
1609
r = p->input_ctx;
1610
p->upstream_done = 1;
1611
1612
ngx_log_error(NGX_LOG_WARN, r->connection->log, 0,
1613
"upstream sent too much data");
1614
}
1615
1616
return NGX_OK;
1617
}
1618
1619
1620
static ngx_inline ngx_int_t
1621
ngx_http_proxy_parse_chunked(ngx_http_request_t *r, ngx_buf_t *buf)
1622
{
1623
u_char *pos, ch, c;
1624
ngx_int_t rc;
1625
ngx_http_proxy_ctx_t *ctx;
1626
enum {
1627
sw_chunk_start = 0,
1628
sw_chunk_size,
1629
sw_chunk_extension,
1630
sw_chunk_extension_almost_done,
1631
sw_chunk_data,
1632
sw_after_data,
1633
sw_after_data_almost_done,
1634
sw_last_chunk_extension,
1635
sw_last_chunk_extension_almost_done,
1636
sw_trailer,
1637
sw_trailer_almost_done,
1638
sw_trailer_header,
1639
sw_trailer_header_almost_done
1640
} state;
1641
1642
ctx = ngx_http_get_module_ctx(r, ngx_http_proxy_module);
1643
1644
if (ctx == NULL) {
1645
return NGX_ERROR;
1646
}
1647
1648
state = ctx->state;
1649
1650
if (state == sw_chunk_data && ctx->size == 0) {
1651
state = sw_after_data;
1652
}
1653
1654
rc = NGX_AGAIN;
1655
1656
for (pos = buf->pos; pos < buf->last; pos++) {
1657
1658
ch = *pos;
1659
1660
ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
1661
"http proxy chunked byte: %02Xd s:%d", ch, state);
1662
1663
switch (state) {
1664
1665
case sw_chunk_start:
1666
if (ch >= '0' && ch <= '9') {
1667
state = sw_chunk_size;
1668
ctx->size = ch - '0';
1669
break;
1670
}
1671
1672
c = (u_char) (ch | 0x20);
1673
1674
if (c >= 'a' && c <= 'f') {
1675
state = sw_chunk_size;
1676
ctx->size = c - 'a' + 10;
1677
break;
1678
}
1679
1680
goto invalid;
1681
1682
case sw_chunk_size:
1683
if (ch >= '0' && ch <= '9') {
1684
ctx->size = ctx->size * 16 + (ch - '0');
1685
break;
1686
}
1687
1688
c = (u_char) (ch | 0x20);
1689
1690
if (c >= 'a' && c <= 'f') {
1691
ctx->size = ctx->size * 16 + (c - 'a' + 10);
1692
break;
1693
}
1694
1695
if (ctx->size == 0) {
1696
1697
switch (ch) {
1698
case CR:
1699
state = sw_last_chunk_extension_almost_done;
1700
break;
1701
case LF:
1702
state = sw_trailer;
1703
break;
1704
case ';':
1705
case ' ':
1706
case '\t':
1707
state = sw_last_chunk_extension;
1708
break;
1709
default:
1710
goto invalid;
1711
}
1712
1713
break;
1714
}
1715
1716
switch (ch) {
1717
case CR:
1718
state = sw_chunk_extension_almost_done;
1719
break;
1720
case LF:
1721
state = sw_chunk_data;
1722
break;
1723
case ';':
1724
case ' ':
1725
case '\t':
1726
state = sw_chunk_extension;
1727
break;
1728
default:
1729
goto invalid;
1730
}
1731
1732
break;
1733
1734
case sw_chunk_extension:
1735
switch (ch) {
1736
case CR:
1737
state = sw_chunk_extension_almost_done;
1738
break;
1739
case LF:
1740
state = sw_chunk_data;
1741
}
1742
break;
1743
1744
case sw_chunk_extension_almost_done:
1745
if (ch == LF) {
1746
state = sw_chunk_data;
1747
break;
1748
}
1749
goto invalid;
1750
1751
case sw_chunk_data:
1752
rc = NGX_OK;
1753
goto data;
1754
1755
case sw_after_data:
1756
switch (ch) {
1757
case CR:
1758
state = sw_after_data_almost_done;
1759
break;
1760
case LF:
1761
state = sw_chunk_start;
1762
}
1763
break;
1764
1765
case sw_after_data_almost_done:
1766
if (ch == LF) {
1767
state = sw_chunk_start;
1768
break;
1769
}
1770
goto invalid;
1771
1772
case sw_last_chunk_extension:
1773
switch (ch) {
1774
case CR:
1775
state = sw_last_chunk_extension_almost_done;
1776
break;
1777
case LF:
1778
state = sw_trailer;
1779
}
1780
break;
1781
1782
case sw_last_chunk_extension_almost_done:
1783
if (ch == LF) {
1784
state = sw_trailer;
1785
break;
1786
}
1787
goto invalid;
1788
1789
case sw_trailer:
1790
switch (ch) {
1791
case CR:
1792
state = sw_trailer_almost_done;
1793
break;
1794
case LF:
1795
goto done;
1796
default:
1797
state = sw_trailer_header;
1798
}
1799
break;
1800
1801
case sw_trailer_almost_done:
1802
if (ch == LF) {
1803
goto done;
1804
}
1805
goto invalid;
1806
1807
case sw_trailer_header:
1808
switch (ch) {
1809
case CR:
1810
state = sw_trailer_header_almost_done;
1811
break;
1812
case LF:
1813
state = sw_trailer;
1814
}
1815
break;
1816
1817
case sw_trailer_header_almost_done:
1818
if (ch == LF) {
1819
state = sw_trailer;
1820
break;
1821
}
1822
goto invalid;
1823
1824
}
1825
}
1826
1827
data:
1828
1829
ctx->state = state;
1830
buf->pos = pos;
1831
1832
switch (state) {
1833
1834
case sw_chunk_start:
1835
ctx->length = 3 /* "0" LF LF */;
1836
break;
1837
case sw_chunk_size:
1838
ctx->length = 2 /* LF LF */
1839
+ (ctx->size ? ctx->size + 4 /* LF "0" LF LF */ : 0);
1840
break;
1841
case sw_chunk_extension:
1842
case sw_chunk_extension_almost_done:
1843
ctx->length = 1 /* LF */ + ctx->size + 4 /* LF "0" LF LF */;
1844
break;
1845
case sw_chunk_data:
1846
ctx->length = ctx->size + 4 /* LF "0" LF LF */;
1847
break;
1848
case sw_after_data:
1849
case sw_after_data_almost_done:
1850
ctx->length = 4 /* LF "0" LF LF */;
1851
break;
1852
case sw_last_chunk_extension:
1853
case sw_last_chunk_extension_almost_done:
1854
ctx->length = 2 /* LF LF */;
1855
break;
1856
case sw_trailer:
1857
case sw_trailer_almost_done:
1858
ctx->length = 1 /* LF */;
1859
break;
1860
case sw_trailer_header:
1861
case sw_trailer_header_almost_done:
1862
ctx->length = 2 /* LF LF */;
1863
break;
1864
1865
}
1866
1867
return rc;
1868
1869
done:
1870
1871
return NGX_DONE;
1872
1873
invalid:
1874
1875
return NGX_ERROR;
1876
}
1877
1878
1879
static ngx_int_t
1880
ngx_http_proxy_chunked_filter(ngx_event_pipe_t *p, ngx_buf_t *buf)
1881
{
1882
ngx_int_t rc;
1883
ngx_buf_t *b, **prev;
1884
ngx_chain_t *cl;
1885
ngx_http_request_t *r;
1886
ngx_http_proxy_ctx_t *ctx;
1887
1888
if (buf->pos == buf->last) {
1889
return NGX_OK;
1890
}
1891
1892
r = p->input_ctx;
1893
ctx = ngx_http_get_module_ctx(r, ngx_http_proxy_module);
1894
1895
if (ctx == NULL) {
1896
return NGX_ERROR;
1897
}
1898
1899
b = NULL;
1900
prev = &buf->shadow;
1901
1902
for ( ;; ) {
1903
1904
rc = ngx_http_proxy_parse_chunked(r, buf);
1905
1906
if (rc == NGX_OK) {
1907
1908
/* a chunk has been parsed successfully */
1909
1910
if (p->free) {
1911
cl = p->free;
1912
b = cl->buf;
1913
p->free = cl->next;
1914
ngx_free_chain(p->pool, cl);
1915
1916
} else {
1917
b = ngx_alloc_buf(p->pool);
1918
if (b == NULL) {
1919
return NGX_ERROR;
1920
}
1921
}
1922
1923
ngx_memzero(b, sizeof(ngx_buf_t));
1924
1925
b->pos = buf->pos;
1926
b->start = buf->start;
1927
b->end = buf->end;
1928
b->tag = p->tag;
1929
b->temporary = 1;
1930
b->recycled = 1;
1931
1932
*prev = b;
1933
prev = &b->shadow;
1934
1935
cl = ngx_alloc_chain_link(p->pool);
1936
if (cl == NULL) {
1937
return NGX_ERROR;
1938
}
1939
1940
cl->buf = b;
1941
cl->next = NULL;
1942
1943
if (p->in) {
1944
*p->last_in = cl;
1945
} else {
1946
p->in = cl;
1947
}
1948
p->last_in = &cl->next;
1949
1950
/* STUB */ b->num = buf->num;
1951
1952
ngx_log_debug2(NGX_LOG_DEBUG_EVENT, p->log, 0,
1953
"input buf #%d %p", b->num, b->pos);
1954
1955
if (buf->last - buf->pos >= ctx->size) {
1956
1957
buf->pos += ctx->size;
1958
b->last = buf->pos;
1959
ctx->size = 0;
1960
1961
continue;
1962
}
1963
1964
ctx->size -= buf->last - buf->pos;
1965
buf->pos = buf->last;
1966
b->last = buf->last;
1967
1968
continue;
1969
}
1970
1971
if (rc == NGX_DONE) {
1972
1973
/* a whole response has been parsed successfully */
1974
1975
p->upstream_done = 1;
1976
r->upstream->keepalive = !r->upstream->headers_in.connection_close;
1977
1978
break;
1979
}
1980
1981
if (rc == NGX_AGAIN) {
1982
1983
/* set p->length, minimal amount of data we want to see */
1984
1985
p->length = ctx->length;
1986
1987
break;
1988
}
1989
1990
/* invalid response */
1991
1992
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
1993
"upstream sent invalid chunked response");
1994
1995
return NGX_ERROR;
1996
}
1997
1998
ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
1999
"http proxy chunked state %d, length %d",
2000
ctx->state, p->length);
2001
2002
if (b) {
2003
b->shadow = buf;
2004
b->last_shadow = 1;
2005
2006
ngx_log_debug2(NGX_LOG_DEBUG_EVENT, p->log, 0,
2007
"input buf %p %z", b->pos, b->last - b->pos);
2008
2009
return NGX_OK;
2010
}
2011
2012
/* there is no data record in the buf, add it to free chain */
2013
2014
if (ngx_event_pipe_add_free_buf(p, buf) != NGX_OK) {
2015
return NGX_ERROR;
2016
}
2017
2018
return NGX_OK;
2019
}
2020
2021
2022
static ngx_int_t
2023
ngx_http_proxy_non_buffered_copy_filter(void *data, ssize_t bytes)
2024
{
2025
ngx_http_request_t *r = data;
2026
2027
ngx_buf_t *b;
2028
ngx_chain_t *cl, **ll;
2029
ngx_http_upstream_t *u;
2030
2031
u = r->upstream;
2032
2033
for (cl = u->out_bufs, ll = &u->out_bufs; cl; cl = cl->next) {
2034
ll = &cl->next;
2035
}
2036
2037
cl = ngx_chain_get_free_buf(r->pool, &u->free_bufs);
2038
if (cl == NULL) {
2039
return NGX_ERROR;
2040
}
2041
2042
*ll = cl;
2043
2044
cl->buf->flush = 1;
2045
cl->buf->memory = 1;
2046
2047
b = &u->buffer;
2048
2049
cl->buf->pos = b->last;
2050
b->last += bytes;
2051
cl->buf->last = b->last;
2052
cl->buf->tag = u->output.tag;
2053
2054
if (u->length == -1) {
2055
return NGX_OK;
2056
}
2057
2058
u->length -= bytes;
2059
2060
if (u->length == 0) {
2061
u->keepalive = !u->headers_in.connection_close;
2062
}
2063
2064
return NGX_OK;
2065
}
2066
2067
2068
static ngx_int_t
2069
ngx_http_proxy_non_buffered_chunked_filter(void *data, ssize_t bytes)
2070
{
2071
ngx_http_request_t *r = data;
2072
2073
ngx_int_t rc;
2074
ngx_buf_t *b, *buf;
2075
ngx_chain_t *cl, **ll;
2076
ngx_http_upstream_t *u;
2077
ngx_http_proxy_ctx_t *ctx;
2078
2079
ctx = ngx_http_get_module_ctx(r, ngx_http_proxy_module);
2080
2081
if (ctx == NULL) {
2082
return NGX_ERROR;
2083
}
2084
2085
u = r->upstream;
2086
buf = &u->buffer;
2087
2088
buf->pos = buf->last;
2089
buf->last += bytes;
2090
2091
for (cl = u->out_bufs, ll = &u->out_bufs; cl; cl = cl->next) {
2092
ll = &cl->next;
2093
}
2094
2095
for ( ;; ) {
2096
2097
rc = ngx_http_proxy_parse_chunked(r, buf);
2098
2099
if (rc == NGX_OK) {
2100
2101
/* a chunk has been parsed successfully */
2102
2103
cl = ngx_chain_get_free_buf(r->pool, &u->free_bufs);
2104
if (cl == NULL) {
2105
return NGX_ERROR;
2106
}
2107
2108
*ll = cl;
2109
ll = &cl->next;
2110
2111
b = cl->buf;
2112
2113
b->flush = 1;
2114
b->memory = 1;
2115
2116
b->pos = buf->pos;
2117
b->tag = u->output.tag;
2118
2119
if (buf->last - buf->pos >= ctx->size) {
2120
buf->pos += ctx->size;
2121
b->last = buf->pos;
2122
ctx->size = 0;
2123
2124
} else {
2125
ctx->size -= buf->last - buf->pos;
2126
buf->pos = buf->last;
2127
b->last = buf->last;
2128
}
2129
2130
ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
2131
"http proxy out buf %p %z",
2132
b->pos, b->last - b->pos);
2133
2134
continue;
2135
}
2136
2137
if (rc == NGX_DONE) {
2138
2139
/* a whole response has been parsed successfully */
2140
2141
u->keepalive = !u->headers_in.connection_close;
2142
u->length = 0;
2143
2144
break;
2145
}
2146
2147
if (rc == NGX_AGAIN) {
2148
break;
2149
}
2150
2151
/* invalid response */
2152
2153
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
2154
"upstream sent invalid chunked response");
2155
2156
return NGX_ERROR;
2157
}
2158
2159
/* provide continuous buffer for subrequests in memory */
2160
2161
if (r->subrequest_in_memory) {
2162
2163
cl = u->out_bufs;
2164
2165
if (cl) {
2166
buf->pos = cl->buf->pos;
2167
}
2168
2169
buf->last = buf->pos;
2170
2171
for (cl = u->out_bufs; cl; cl = cl->next) {
2172
ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
2173
"http proxy in memory %p-%p %uz",
2174
cl->buf->pos, cl->buf->last, ngx_buf_size(cl->buf));
2175
2176
if (buf->last == cl->buf->pos) {
2177
buf->last = cl->buf->last;
2178
continue;
2179
}
2180
2181
buf->last = ngx_movemem(buf->last, cl->buf->pos,
2182
cl->buf->last - cl->buf->pos);
2183
2184
cl->buf->pos = buf->last - (cl->buf->last - cl->buf->pos);
2185
cl->buf->last = buf->last;
2186
}
2187
}
2188
2189
return NGX_OK;
2190
}
2191
2192
2193
static void
2194
ngx_http_proxy_abort_request(ngx_http_request_t *r)
2195
{
2196
ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
2197
"abort http proxy request");
2198
2199
return;
2200
}
2201
2202
2203
static void
2204
ngx_http_proxy_finalize_request(ngx_http_request_t *r, ngx_int_t rc)
2205
{
2206
ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
2207
"finalize http proxy request");
2208
2209
return;
2210
}
2211
2212
2213
static ngx_int_t
2214
ngx_http_proxy_host_variable(ngx_http_request_t *r,
2215
ngx_http_variable_value_t *v, uintptr_t data)
2216
{
2217
ngx_http_proxy_ctx_t *ctx;
2218
2219
ctx = ngx_http_get_module_ctx(r, ngx_http_proxy_module);
2220
2221
if (ctx == NULL) {
2222
v->not_found = 1;
2223
return NGX_OK;
2224
}
2225
2226
v->len = ctx->vars.host_header.len;
2227
v->valid = 1;
2228
v->no_cacheable = 0;
2229
v->not_found = 0;
2230
v->data = ctx->vars.host_header.data;
2231
2232
return NGX_OK;
2233
}
2234
2235
2236
static ngx_int_t
2237
ngx_http_proxy_port_variable(ngx_http_request_t *r,
2238
ngx_http_variable_value_t *v, uintptr_t data)
2239
{
2240
ngx_http_proxy_ctx_t *ctx;
2241
2242
ctx = ngx_http_get_module_ctx(r, ngx_http_proxy_module);
2243
2244
if (ctx == NULL) {
2245
v->not_found = 1;
2246
return NGX_OK;
2247
}
2248
2249
v->len = ctx->vars.port.len;
2250
v->valid = 1;
2251
v->no_cacheable = 0;
2252
v->not_found = 0;
2253
v->data = ctx->vars.port.data;
2254
2255
return NGX_OK;
2256
}
2257
2258
2259
static ngx_int_t
2260
ngx_http_proxy_add_x_forwarded_for_variable(ngx_http_request_t *r,
2261
ngx_http_variable_value_t *v, uintptr_t data)
2262
{
2263
u_char *p;
2264
2265
v->valid = 1;
2266
v->no_cacheable = 0;
2267
v->not_found = 0;
2268
2269
if (r->headers_in.x_forwarded_for == NULL) {
2270
v->len = r->connection->addr_text.len;
2271
v->data = r->connection->addr_text.data;
2272
return NGX_OK;
2273
}
2274
2275
v->len = r->headers_in.x_forwarded_for->value.len
2276
+ sizeof(", ") - 1 + r->connection->addr_text.len;
2277
2278
p = ngx_pnalloc(r->pool, v->len);
2279
if (p == NULL) {
2280
return NGX_ERROR;
2281
}
2282
2283
v->data = p;
2284
2285
p = ngx_copy(p, r->headers_in.x_forwarded_for->value.data,
2286
r->headers_in.x_forwarded_for->value.len);
2287
2288
*p++ = ','; *p++ = ' ';
2289
2290
ngx_memcpy(p, r->connection->addr_text.data, r->connection->addr_text.len);
2291
2292
return NGX_OK;
2293
}
2294
2295
2296
static ngx_int_t
2297
ngx_http_proxy_internal_body_length_variable(ngx_http_request_t *r,
2298
ngx_http_variable_value_t *v, uintptr_t data)
2299
{
2300
ngx_http_proxy_ctx_t *ctx;
2301
2302
ctx = ngx_http_get_module_ctx(r, ngx_http_proxy_module);
2303
2304
if (ctx == NULL) {
2305
v->not_found = 1;
2306
return NGX_OK;
2307
}
2308
2309
v->valid = 1;
2310
v->no_cacheable = 0;
2311
v->not_found = 0;
2312
2313
v->data = ngx_pnalloc(r->connection->pool, NGX_SIZE_T_LEN);
2314
2315
if (v->data == NULL) {
2316
return NGX_ERROR;
2317
}
2318
2319
v->len = ngx_sprintf(v->data, "%uz", ctx->internal_body_length) - v->data;
2320
2321
return NGX_OK;
2322
}
2323
2324
2325
static ngx_int_t
2326
ngx_http_proxy_rewrite_redirect(ngx_http_request_t *r, ngx_table_elt_t *h,
2327
size_t prefix)
2328
{
2329
size_t len;
2330
ngx_int_t rc;
2331
ngx_uint_t i;
2332
ngx_http_proxy_rewrite_t *pr;
2333
ngx_http_proxy_loc_conf_t *plcf;
2334
2335
plcf = ngx_http_get_module_loc_conf(r, ngx_http_proxy_module);
2336
2337
pr = plcf->redirects->elts;
2338
2339
if (pr == NULL) {
2340
return NGX_DECLINED;
2341
}
2342
2343
len = h->value.len - prefix;
2344
2345
for (i = 0; i < plcf->redirects->nelts; i++) {
2346
rc = pr[i].handler(r, h, prefix, len, &pr[i]);
2347
2348
if (rc != NGX_DECLINED) {
2349
return rc;
2350
}
2351
}
2352
2353
return NGX_DECLINED;
2354
}
2355
2356
2357
static ngx_int_t
2358
ngx_http_proxy_rewrite_cookie(ngx_http_request_t *r, ngx_table_elt_t *h)
2359
{
2360
size_t prefix;
2361
u_char *p;
2362
ngx_int_t rc, rv;
2363
ngx_http_proxy_loc_conf_t *plcf;
2364
2365
p = (u_char *) ngx_strchr(h->value.data, ';');
2366
if (p == NULL) {
2367
return NGX_DECLINED;
2368
}
2369
2370
prefix = p + 1 - h->value.data;
2371
2372
rv = NGX_DECLINED;
2373
2374
plcf = ngx_http_get_module_loc_conf(r, ngx_http_proxy_module);
2375
2376
if (plcf->cookie_domains) {
2377
p = ngx_strcasestrn(h->value.data + prefix, "domain=", 7 - 1);
2378
2379
if (p) {
2380
rc = ngx_http_proxy_rewrite_cookie_value(r, h, p + 7,
2381
plcf->cookie_domains);
2382
if (rc == NGX_ERROR) {
2383
return NGX_ERROR;
2384
}
2385
2386
if (rc != NGX_DECLINED) {
2387
rv = rc;
2388
}
2389
}
2390
}
2391
2392
if (plcf->cookie_paths) {
2393
p = ngx_strcasestrn(h->value.data + prefix, "path=", 5 - 1);
2394
2395
if (p) {
2396
rc = ngx_http_proxy_rewrite_cookie_value(r, h, p + 5,
2397
plcf->cookie_paths);
2398
if (rc == NGX_ERROR) {
2399
return NGX_ERROR;
2400
}
2401
2402
if (rc != NGX_DECLINED) {
2403
rv = rc;
2404
}
2405
}
2406
}
2407
2408
return rv;
2409
}
2410
2411
2412
static ngx_int_t
2413
ngx_http_proxy_rewrite_cookie_value(ngx_http_request_t *r, ngx_table_elt_t *h,
2414
u_char *value, ngx_array_t *rewrites)
2415
{
2416
size_t len, prefix;
2417
u_char *p;
2418
ngx_int_t rc;
2419
ngx_uint_t i;
2420
ngx_http_proxy_rewrite_t *pr;
2421
2422
prefix = value - h->value.data;
2423
2424
p = (u_char *) ngx_strchr(value, ';');
2425
2426
len = p ? (size_t) (p - value) : (h->value.len - prefix);
2427
2428
pr = rewrites->elts;
2429
2430
for (i = 0; i < rewrites->nelts; i++) {
2431
rc = pr[i].handler(r, h, prefix, len, &pr[i]);
2432
2433
if (rc != NGX_DECLINED) {
2434
return rc;
2435
}
2436
}
2437
2438
return NGX_DECLINED;
2439
}
2440
2441
2442
static ngx_int_t
2443
ngx_http_proxy_rewrite_complex_handler(ngx_http_request_t *r,
2444
ngx_table_elt_t *h, size_t prefix, size_t len, ngx_http_proxy_rewrite_t *pr)
2445
{
2446
ngx_str_t pattern, replacement;
2447
2448
if (ngx_http_complex_value(r, &pr->pattern.complex, &pattern) != NGX_OK) {
2449
return NGX_ERROR;
2450
}
2451
2452
if (pattern.len > len
2453
|| ngx_rstrncmp(h->value.data + prefix, pattern.data,
2454
pattern.len) != 0)
2455
{
2456
return NGX_DECLINED;
2457
}
2458
2459
if (ngx_http_complex_value(r, &pr->replacement, &replacement) != NGX_OK) {
2460
return NGX_ERROR;
2461
}
2462
2463
return ngx_http_proxy_rewrite(r, h, prefix, pattern.len, &replacement);
2464
}
2465
2466
2467
#if (NGX_PCRE)
2468
2469
static ngx_int_t
2470
ngx_http_proxy_rewrite_regex_handler(ngx_http_request_t *r, ngx_table_elt_t *h,
2471
size_t prefix, size_t len, ngx_http_proxy_rewrite_t *pr)
2472
{
2473
ngx_str_t pattern, replacement;
2474
2475
pattern.len = len;
2476
pattern.data = h->value.data + prefix;
2477
2478
if (ngx_http_regex_exec(r, pr->pattern.regex, &pattern) != NGX_OK) {
2479
return NGX_DECLINED;
2480
}
2481
2482
if (ngx_http_complex_value(r, &pr->replacement, &replacement) != NGX_OK) {
2483
return NGX_ERROR;
2484
}
2485
2486
if (prefix == 0 && h->value.len == len) {
2487
h->value = replacement;
2488
return NGX_OK;
2489
}
2490
2491
return ngx_http_proxy_rewrite(r, h, prefix, len, &replacement);
2492
}
2493
2494
#endif
2495
2496
2497
static ngx_int_t
2498
ngx_http_proxy_rewrite_domain_handler(ngx_http_request_t *r,
2499
ngx_table_elt_t *h, size_t prefix, size_t len, ngx_http_proxy_rewrite_t *pr)
2500
{
2501
u_char *p;
2502
ngx_str_t pattern, replacement;
2503
2504
if (ngx_http_complex_value(r, &pr->pattern.complex, &pattern) != NGX_OK) {
2505
return NGX_ERROR;
2506
}
2507
2508
p = h->value.data + prefix;
2509
2510
if (p[0] == '.') {
2511
p++;
2512
prefix++;
2513
len--;
2514
}
2515
2516
if (pattern.len != len || ngx_rstrncasecmp(pattern.data, p, len) != 0) {
2517
return NGX_DECLINED;
2518
}
2519
2520
if (ngx_http_complex_value(r, &pr->replacement, &replacement) != NGX_OK) {
2521
return NGX_ERROR;
2522
}
2523
2524
return ngx_http_proxy_rewrite(r, h, prefix, len, &replacement);
2525
}
2526
2527
2528
static ngx_int_t
2529
ngx_http_proxy_rewrite(ngx_http_request_t *r, ngx_table_elt_t *h, size_t prefix,
2530
size_t len, ngx_str_t *replacement)
2531
{
2532
u_char *p, *data;
2533
size_t new_len;
2534
2535
new_len = replacement->len + h->value.len - len;
2536
2537
if (replacement->len > len) {
2538
2539
data = ngx_pnalloc(r->pool, new_len);
2540
if (data == NULL) {
2541
return NGX_ERROR;
2542
}
2543
2544
p = ngx_copy(data, h->value.data, prefix);
2545
p = ngx_copy(p, replacement->data, replacement->len);
2546
2547
ngx_memcpy(p, h->value.data + prefix + len,
2548
h->value.len - len - prefix);
2549
2550
h->value.data = data;
2551
2552
} else {
2553
p = ngx_copy(h->value.data + prefix, replacement->data,
2554
replacement->len);
2555
2556
ngx_memmove(p, h->value.data + prefix + len,
2557
h->value.len - len - prefix);
2558
}
2559
2560
h->value.len = new_len;
2561
2562
return NGX_OK;
2563
}
2564
2565
2566
static ngx_int_t
2567
ngx_http_proxy_add_variables(ngx_conf_t *cf)
2568
{
2569
ngx_http_variable_t *var, *v;
2570
2571
for (v = ngx_http_proxy_vars; v->name.len; v++) {
2572
var = ngx_http_add_variable(cf, &v->name, v->flags);
2573
if (var == NULL) {
2574
return NGX_ERROR;
2575
}
2576
2577
var->get_handler = v->get_handler;
2578
var->data = v->data;
2579
}
2580
2581
return NGX_OK;
2582
}
2583
2584
2585
static void *
2586
ngx_http_proxy_create_loc_conf(ngx_conf_t *cf)
2587
{
2588
ngx_http_proxy_loc_conf_t *conf;
2589
2590
conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_proxy_loc_conf_t));
2591
if (conf == NULL) {
2592
return NULL;
2593
}
2594
2595
/*
2596
* set by ngx_pcalloc():
2597
*
2598
* conf->upstream.bufs.num = 0;
2599
* conf->upstream.ignore_headers = 0;
2600
* conf->upstream.next_upstream = 0;
2601
* conf->upstream.cache_use_stale = 0;
2602
* conf->upstream.cache_methods = 0;
2603
* conf->upstream.temp_path = NULL;
2604
* conf->upstream.hide_headers_hash = { NULL, 0 };
2605
* conf->upstream.uri = { 0, NULL };
2606
* conf->upstream.location = NULL;
2607
* conf->upstream.store_lengths = NULL;
2608
* conf->upstream.store_values = NULL;
2609
*
2610
* conf->method = NULL;
2611
* conf->headers_source = NULL;
2612
* conf->headers_set_len = NULL;
2613
* conf->headers_set = NULL;
2614
* conf->headers_set_hash = NULL;
2615
* conf->body_set_len = NULL;
2616
* conf->body_set = NULL;
2617
* conf->body_source = { 0, NULL };
2618
* conf->redirects = NULL;
2619
*/
2620
2621
conf->upstream.store = NGX_CONF_UNSET;
2622
conf->upstream.store_access = NGX_CONF_UNSET_UINT;
2623
conf->upstream.buffering = NGX_CONF_UNSET;
2624
conf->upstream.ignore_client_abort = NGX_CONF_UNSET;
2625
2626
conf->upstream.connect_timeout = NGX_CONF_UNSET_MSEC;
2627
conf->upstream.send_timeout = NGX_CONF_UNSET_MSEC;
2628
conf->upstream.read_timeout = NGX_CONF_UNSET_MSEC;
2629
2630
conf->upstream.send_lowat = NGX_CONF_UNSET_SIZE;
2631
conf->upstream.buffer_size = NGX_CONF_UNSET_SIZE;
2632
2633
conf->upstream.busy_buffers_size_conf = NGX_CONF_UNSET_SIZE;
2634
conf->upstream.max_temp_file_size_conf = NGX_CONF_UNSET_SIZE;
2635
conf->upstream.temp_file_write_size_conf = NGX_CONF_UNSET_SIZE;
2636
2637
conf->upstream.pass_request_headers = NGX_CONF_UNSET;
2638
conf->upstream.pass_request_body = NGX_CONF_UNSET;
2639
2640
#if (NGX_HTTP_CACHE)
2641
conf->upstream.cache = NGX_CONF_UNSET_PTR;
2642
conf->upstream.cache_min_uses = NGX_CONF_UNSET_UINT;
2643
conf->upstream.cache_bypass = NGX_CONF_UNSET_PTR;
2644
conf->upstream.no_cache = NGX_CONF_UNSET_PTR;
2645
conf->upstream.cache_valid = NGX_CONF_UNSET_PTR;
2646
conf->upstream.cache_lock = NGX_CONF_UNSET;
2647
conf->upstream.cache_lock_timeout = NGX_CONF_UNSET_MSEC;
2648
#endif
2649
2650
conf->upstream.hide_headers = NGX_CONF_UNSET_PTR;
2651
conf->upstream.pass_headers = NGX_CONF_UNSET_PTR;
2652
2653
conf->upstream.intercept_errors = NGX_CONF_UNSET;
2654
#if (NGX_HTTP_SSL)
2655
conf->upstream.ssl_session_reuse = NGX_CONF_UNSET;
2656
#endif
2657
2658
/* "proxy_cyclic_temp_file" is disabled */
2659
conf->upstream.cyclic_temp_file = 0;
2660
2661
conf->redirect = NGX_CONF_UNSET;
2662
conf->upstream.change_buffering = 1;
2663
2664
conf->cookie_domains = NGX_CONF_UNSET_PTR;
2665
conf->cookie_paths = NGX_CONF_UNSET_PTR;
2666
2667
conf->http_version = NGX_CONF_UNSET_UINT;
2668
2669
conf->headers_hash_max_size = NGX_CONF_UNSET_UINT;
2670
conf->headers_hash_bucket_size = NGX_CONF_UNSET_UINT;
2671
2672
ngx_str_set(&conf->upstream.module, "proxy");
2673
2674
return conf;
2675
}
2676
2677
2678
static char *
2679
ngx_http_proxy_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child)
2680
{
2681
ngx_http_proxy_loc_conf_t *prev = parent;
2682
ngx_http_proxy_loc_conf_t *conf = child;
2683
2684
u_char *p;
2685
size_t size;
2686
ngx_hash_init_t hash;
2687
ngx_http_core_loc_conf_t *clcf;
2688
ngx_http_proxy_rewrite_t *pr;
2689
ngx_http_script_compile_t sc;
2690
2691
if (conf->upstream.store != 0) {
2692
ngx_conf_merge_value(conf->upstream.store,
2693
prev->upstream.store, 0);
2694
2695
if (conf->upstream.store_lengths == NULL) {
2696
conf->upstream.store_lengths = prev->upstream.store_lengths;
2697
conf->upstream.store_values = prev->upstream.store_values;
2698
}
2699
}
2700
2701
ngx_conf_merge_uint_value(conf->upstream.store_access,
2702
prev->upstream.store_access, 0600);
2703
2704
ngx_conf_merge_value(conf->upstream.buffering,
2705
prev->upstream.buffering, 1);
2706
2707
ngx_conf_merge_value(conf->upstream.ignore_client_abort,
2708
prev->upstream.ignore_client_abort, 0);
2709
2710
ngx_conf_merge_msec_value(conf->upstream.connect_timeout,
2711
prev->upstream.connect_timeout, 60000);
2712
2713
ngx_conf_merge_msec_value(conf->upstream.send_timeout,
2714
prev->upstream.send_timeout, 60000);
2715
2716
ngx_conf_merge_msec_value(conf->upstream.read_timeout,
2717
prev->upstream.read_timeout, 60000);
2718
2719
ngx_conf_merge_size_value(conf->upstream.send_lowat,
2720
prev->upstream.send_lowat, 0);
2721
2722
ngx_conf_merge_size_value(conf->upstream.buffer_size,
2723
prev->upstream.buffer_size,
2724
(size_t) ngx_pagesize);
2725
2726
ngx_conf_merge_bufs_value(conf->upstream.bufs, prev->upstream.bufs,
2727
8, ngx_pagesize);
2728
2729
if (conf->upstream.bufs.num < 2) {
2730
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
2731
"there must be at least 2 \"proxy_buffers\"");
2732
return NGX_CONF_ERROR;
2733
}
2734
2735
2736
size = conf->upstream.buffer_size;
2737
if (size < conf->upstream.bufs.size) {
2738
size = conf->upstream.bufs.size;
2739
}
2740
2741
2742
ngx_conf_merge_size_value(conf->upstream.busy_buffers_size_conf,
2743
prev->upstream.busy_buffers_size_conf,
2744
NGX_CONF_UNSET_SIZE);
2745
2746
if (conf->upstream.busy_buffers_size_conf == NGX_CONF_UNSET_SIZE) {
2747
conf->upstream.busy_buffers_size = 2 * size;
2748
} else {
2749
conf->upstream.busy_buffers_size =
2750
conf->upstream.busy_buffers_size_conf;
2751
}
2752
2753
if (conf->upstream.busy_buffers_size < size) {
2754
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
2755
"\"proxy_busy_buffers_size\" must be equal to or greater than "
2756
"the maximum of the value of \"proxy_buffer_size\" and "
2757
"one of the \"proxy_buffers\"");
2758
2759
return NGX_CONF_ERROR;
2760
}
2761
2762
if (conf->upstream.busy_buffers_size
2763
> (conf->upstream.bufs.num - 1) * conf->upstream.bufs.size)
2764
{
2765
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
2766
"\"proxy_busy_buffers_size\" must be less than "
2767
"the size of all \"proxy_buffers\" minus one buffer");
2768
2769
return NGX_CONF_ERROR;
2770
}
2771
2772
2773
ngx_conf_merge_size_value(conf->upstream.temp_file_write_size_conf,
2774
prev->upstream.temp_file_write_size_conf,
2775
NGX_CONF_UNSET_SIZE);
2776
2777
if (conf->upstream.temp_file_write_size_conf == NGX_CONF_UNSET_SIZE) {
2778
conf->upstream.temp_file_write_size = 2 * size;
2779
} else {
2780
conf->upstream.temp_file_write_size =
2781
conf->upstream.temp_file_write_size_conf;
2782
}
2783
2784
if (conf->upstream.temp_file_write_size < size) {
2785
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
2786
"\"proxy_temp_file_write_size\" must be equal to or greater "
2787
"than the maximum of the value of \"proxy_buffer_size\" and "
2788
"one of the \"proxy_buffers\"");
2789
2790
return NGX_CONF_ERROR;
2791
}
2792
2793
ngx_conf_merge_size_value(conf->upstream.max_temp_file_size_conf,
2794
prev->upstream.max_temp_file_size_conf,
2795
NGX_CONF_UNSET_SIZE);
2796
2797
if (conf->upstream.max_temp_file_size_conf == NGX_CONF_UNSET_SIZE) {
2798
conf->upstream.max_temp_file_size = 1024 * 1024 * 1024;
2799
} else {
2800
conf->upstream.max_temp_file_size =
2801
conf->upstream.max_temp_file_size_conf;
2802
}
2803
2804
if (conf->upstream.max_temp_file_size != 0
2805
&& conf->upstream.max_temp_file_size < size)
2806
{
2807
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
2808
"\"proxy_max_temp_file_size\" must be equal to zero to disable "
2809
"temporary files usage or must be equal to or greater than "
2810
"the maximum of the value of \"proxy_buffer_size\" and "
2811
"one of the \"proxy_buffers\"");
2812
2813
return NGX_CONF_ERROR;
2814
}
2815
2816
2817
ngx_conf_merge_bitmask_value(conf->upstream.ignore_headers,
2818
prev->upstream.ignore_headers,
2819
NGX_CONF_BITMASK_SET);
2820
2821
2822
ngx_conf_merge_bitmask_value(conf->upstream.next_upstream,
2823
prev->upstream.next_upstream,
2824
(NGX_CONF_BITMASK_SET
2825
|NGX_HTTP_UPSTREAM_FT_ERROR
2826
|NGX_HTTP_UPSTREAM_FT_TIMEOUT));
2827
2828
if (conf->upstream.next_upstream & NGX_HTTP_UPSTREAM_FT_OFF) {
2829
conf->upstream.next_upstream = NGX_CONF_BITMASK_SET
2830
|NGX_HTTP_UPSTREAM_FT_OFF;
2831
}
2832
2833
if (ngx_conf_merge_path_value(cf, &conf->upstream.temp_path,
2834
prev->upstream.temp_path,
2835
&ngx_http_proxy_temp_path)
2836
!= NGX_OK)
2837
{
2838
return NGX_CONF_ERROR;
2839
}
2840
2841
2842
#if (NGX_HTTP_CACHE)
2843
2844
ngx_conf_merge_ptr_value(conf->upstream.cache,
2845
prev->upstream.cache, NULL);
2846
2847
if (conf->upstream.cache && conf->upstream.cache->data == NULL) {
2848
ngx_shm_zone_t *shm_zone;
2849
2850
shm_zone = conf->upstream.cache;
2851
2852
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
2853
"\"proxy_cache\" zone \"%V\" is unknown",
2854
&shm_zone->shm.name);
2855
2856
return NGX_CONF_ERROR;
2857
}
2858
2859
ngx_conf_merge_uint_value(conf->upstream.cache_min_uses,
2860
prev->upstream.cache_min_uses, 1);
2861
2862
ngx_conf_merge_bitmask_value(conf->upstream.cache_use_stale,
2863
prev->upstream.cache_use_stale,
2864
(NGX_CONF_BITMASK_SET
2865
|NGX_HTTP_UPSTREAM_FT_OFF));
2866
2867
if (conf->upstream.cache_use_stale & NGX_HTTP_UPSTREAM_FT_OFF) {
2868
conf->upstream.cache_use_stale = NGX_CONF_BITMASK_SET
2869
|NGX_HTTP_UPSTREAM_FT_OFF;
2870
}
2871
2872
if (conf->upstream.cache_use_stale & NGX_HTTP_UPSTREAM_FT_ERROR) {
2873
conf->upstream.cache_use_stale |= NGX_HTTP_UPSTREAM_FT_NOLIVE;
2874
}
2875
2876
if (conf->upstream.cache_methods == 0) {
2877
conf->upstream.cache_methods = prev->upstream.cache_methods;
2878
}
2879
2880
conf->upstream.cache_methods |= NGX_HTTP_GET|NGX_HTTP_HEAD;
2881
2882
ngx_conf_merge_ptr_value(conf->upstream.cache_bypass,
2883
prev->upstream.cache_bypass, NULL);
2884
2885
ngx_conf_merge_ptr_value(conf->upstream.no_cache,
2886
prev->upstream.no_cache, NULL);
2887
2888
if (conf->upstream.no_cache && conf->upstream.cache_bypass == NULL) {
2889
ngx_log_error(NGX_LOG_WARN, cf->log, 0,
2890
"\"proxy_no_cache\" functionality has been changed in 0.8.46, "
2891
"now it should be used together with \"proxy_cache_bypass\"");
2892
}
2893
2894
ngx_conf_merge_ptr_value(conf->upstream.cache_valid,
2895
prev->upstream.cache_valid, NULL);
2896
2897
if (conf->cache_key.value.data == NULL) {
2898
conf->cache_key = prev->cache_key;
2899
}
2900
2901
ngx_conf_merge_value(conf->upstream.cache_lock,
2902
prev->upstream.cache_lock, 0);
2903
2904
ngx_conf_merge_msec_value(conf->upstream.cache_lock_timeout,
2905
prev->upstream.cache_lock_timeout, 5000);
2906
2907
#endif
2908
2909
if (conf->method.len == 0) {
2910
conf->method = prev->method;
2911
2912
} else {
2913
conf->method.data[conf->method.len] = ' ';
2914
conf->method.len++;
2915
}
2916
2917
ngx_conf_merge_value(conf->upstream.pass_request_headers,
2918
prev->upstream.pass_request_headers, 1);
2919
ngx_conf_merge_value(conf->upstream.pass_request_body,
2920
prev->upstream.pass_request_body, 1);
2921
2922
ngx_conf_merge_value(conf->upstream.intercept_errors,
2923
prev->upstream.intercept_errors, 0);
2924
2925
#if (NGX_HTTP_SSL)
2926
ngx_conf_merge_value(conf->upstream.ssl_session_reuse,
2927
prev->upstream.ssl_session_reuse, 1);
2928
#endif
2929
2930
ngx_conf_merge_value(conf->redirect, prev->redirect, 1);
2931
2932
if (conf->redirect) {
2933
2934
if (conf->redirects == NULL) {
2935
conf->redirects = prev->redirects;
2936
}
2937
2938
if (conf->redirects == NULL && conf->url.data) {
2939
2940
conf->redirects = ngx_array_create(cf->pool, 1,
2941
sizeof(ngx_http_proxy_rewrite_t));
2942
if (conf->redirects == NULL) {
2943
return NGX_CONF_ERROR;
2944
}
2945
2946
pr = ngx_array_push(conf->redirects);
2947
if (pr == NULL) {
2948
return NGX_CONF_ERROR;
2949
}
2950
2951
ngx_memzero(&pr->pattern.complex,
2952
sizeof(ngx_http_complex_value_t));
2953
2954
ngx_memzero(&pr->replacement, sizeof(ngx_http_complex_value_t));
2955
2956
pr->handler = ngx_http_proxy_rewrite_complex_handler;
2957
2958
if (conf->vars.uri.len) {
2959
pr->pattern.complex.value = conf->url;
2960
pr->replacement.value = conf->location;
2961
2962
} else {
2963
pr->pattern.complex.value.len = conf->url.len
2964
+ sizeof("/") - 1;
2965
2966
p = ngx_pnalloc(cf->pool, pr->pattern.complex.value.len);
2967
if (p == NULL) {
2968
return NGX_CONF_ERROR;
2969
}
2970
2971
pr->pattern.complex.value.data = p;
2972
2973
p = ngx_cpymem(p, conf->url.data, conf->url.len);
2974
*p = '/';
2975
2976
ngx_str_set(&pr->replacement.value, "/");
2977
}
2978
}
2979
}
2980
2981
ngx_conf_merge_ptr_value(conf->cookie_domains, prev->cookie_domains, NULL);
2982
2983
ngx_conf_merge_ptr_value(conf->cookie_paths, prev->cookie_paths, NULL);
2984
2985
#if (NGX_HTTP_SSL)
2986
if (conf->upstream.ssl == NULL) {
2987
conf->upstream.ssl = prev->upstream.ssl;
2988
}
2989
#endif
2990
2991
ngx_conf_merge_uint_value(conf->http_version, prev->http_version,
2992
NGX_HTTP_VERSION_10);
2993
2994
ngx_conf_merge_uint_value(conf->headers_hash_max_size,
2995
prev->headers_hash_max_size, 512);
2996
2997
ngx_conf_merge_uint_value(conf->headers_hash_bucket_size,
2998
prev->headers_hash_bucket_size, 64);
2999
3000
conf->headers_hash_bucket_size = ngx_align(conf->headers_hash_bucket_size,
3001
ngx_cacheline_size);
3002
3003
hash.max_size = conf->headers_hash_max_size;
3004
hash.bucket_size = conf->headers_hash_bucket_size;
3005
hash.name = "proxy_headers_hash";
3006
3007
if (ngx_http_upstream_hide_headers_hash(cf, &conf->upstream,
3008
&prev->upstream, ngx_http_proxy_hide_headers, &hash)
3009
!= NGX_OK)
3010
{
3011
return NGX_CONF_ERROR;
3012
}
3013
3014
if (conf->upstream.upstream == NULL) {
3015
conf->upstream.upstream = prev->upstream.upstream;
3016
conf->vars = prev->vars;
3017
}
3018
3019
if (conf->proxy_lengths == NULL) {
3020
conf->proxy_lengths = prev->proxy_lengths;
3021
conf->proxy_values = prev->proxy_values;
3022
}
3023
3024
if (conf->upstream.upstream || conf->proxy_lengths) {
3025
clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module);
3026
if (clcf->handler == NULL && clcf->lmt_excpt) {
3027
clcf->handler = ngx_http_proxy_handler;
3028
conf->location = prev->location;
3029
}
3030
}
3031
3032
if (conf->body_source.data == NULL) {
3033
conf->body_source = prev->body_source;
3034
conf->body_set_len = prev->body_set_len;
3035
conf->body_set = prev->body_set;
3036
}
3037
3038
if (conf->body_source.data && conf->body_set_len == NULL) {
3039
3040
ngx_memzero(&sc, sizeof(ngx_http_script_compile_t));
3041
3042
sc.cf = cf;
3043
sc.source = &conf->body_source;
3044
sc.flushes = &conf->flushes;
3045
sc.lengths = &conf->body_set_len;
3046
sc.values = &conf->body_set;
3047
sc.complete_lengths = 1;
3048
sc.complete_values = 1;
3049
3050
if (ngx_http_script_compile(&sc) != NGX_OK) {
3051
return NGX_CONF_ERROR;
3052
}
3053
}
3054
3055
if (ngx_http_proxy_merge_headers(cf, conf, prev) != NGX_OK) {
3056
return NGX_CONF_ERROR;
3057
}
3058
3059
return NGX_CONF_OK;
3060
}
3061
3062
3063
static ngx_int_t
3064
ngx_http_proxy_merge_headers(ngx_conf_t *cf, ngx_http_proxy_loc_conf_t *conf,
3065
ngx_http_proxy_loc_conf_t *prev)
3066
{
3067
u_char *p;
3068
size_t size;
3069
uintptr_t *code;
3070
ngx_uint_t i;
3071
ngx_array_t headers_names, headers_merged;
3072
ngx_keyval_t *src, *s, *h;
3073
ngx_hash_key_t *hk;
3074
ngx_hash_init_t hash;
3075
ngx_http_script_compile_t sc;
3076
ngx_http_script_copy_code_t *copy;
3077
3078
if (conf->headers_source == NULL) {
3079
conf->flushes = prev->flushes;
3080
conf->headers_set_len = prev->headers_set_len;
3081
conf->headers_set = prev->headers_set;
3082
conf->headers_set_hash = prev->headers_set_hash;
3083
conf->headers_source = prev->headers_source;
3084
}
3085
3086
if (conf->headers_set_hash.buckets
3087
&& ((conf->body_source.data == NULL)
3088
== (prev->body_source.data == NULL))
3089
#if (NGX_HTTP_CACHE)
3090
&& ((conf->upstream.cache == NULL) == (prev->upstream.cache == NULL))
3091
#endif
3092
)
3093
{
3094
return NGX_OK;
3095
}
3096
3097
3098
if (ngx_array_init(&headers_names, cf->temp_pool, 4, sizeof(ngx_hash_key_t))
3099
!= NGX_OK)
3100
{
3101
return NGX_ERROR;
3102
}
3103
3104
if (ngx_array_init(&headers_merged, cf->temp_pool, 4, sizeof(ngx_keyval_t))
3105
!= NGX_OK)
3106
{
3107
return NGX_ERROR;
3108
}
3109
3110
if (conf->headers_source == NULL) {
3111
conf->headers_source = ngx_array_create(cf->pool, 4,
3112
sizeof(ngx_keyval_t));
3113
if (conf->headers_source == NULL) {
3114
return NGX_ERROR;
3115
}
3116
}
3117
3118
conf->headers_set_len = ngx_array_create(cf->pool, 64, 1);
3119
if (conf->headers_set_len == NULL) {
3120
return NGX_ERROR;
3121
}
3122
3123
conf->headers_set = ngx_array_create(cf->pool, 512, 1);
3124
if (conf->headers_set == NULL) {
3125
return NGX_ERROR;
3126
}
3127
3128
3129
#if (NGX_HTTP_CACHE)
3130
3131
h = conf->upstream.cache ? ngx_http_proxy_cache_headers:
3132
ngx_http_proxy_headers;
3133
#else
3134
3135
h = ngx_http_proxy_headers;
3136
3137
#endif
3138
3139
src = conf->headers_source->elts;
3140
for (i = 0; i < conf->headers_source->nelts; i++) {
3141
3142
s = ngx_array_push(&headers_merged);
3143
if (s == NULL) {
3144
return NGX_ERROR;
3145
}
3146
3147
*s = src[i];
3148
}
3149
3150
while (h->key.len) {
3151
3152
src = headers_merged.elts;
3153
for (i = 0; i < headers_merged.nelts; i++) {
3154
if (ngx_strcasecmp(h->key.data, src[i].key.data) == 0) {
3155
goto next;
3156
}
3157
}
3158
3159
s = ngx_array_push(&headers_merged);
3160
if (s == NULL) {
3161
return NGX_ERROR;
3162
}
3163
3164
*s = *h;
3165
3166
next:
3167
3168
h++;
3169
}
3170
3171
if (conf->body_source.data) {
3172
s = ngx_array_push(&headers_merged);
3173
if (s == NULL) {
3174
return NGX_ERROR;
3175
}
3176
3177
ngx_str_set(&s->key, "Content-Length");
3178
ngx_str_set(&s->value, "$proxy_internal_body_length");
3179
}
3180
3181
3182
src = headers_merged.elts;
3183
for (i = 0; i < headers_merged.nelts; i++) {
3184
3185
hk = ngx_array_push(&headers_names);
3186
if (hk == NULL) {
3187
return NGX_ERROR;
3188
}
3189
3190
hk->key = src[i].key;
3191
hk->key_hash = ngx_hash_key_lc(src[i].key.data, src[i].key.len);
3192
hk->value = (void *) 1;
3193
3194
if (src[i].value.len == 0) {
3195
continue;
3196
}
3197
3198
if (ngx_http_script_variables_count(&src[i].value) == 0) {
3199
copy = ngx_array_push_n(conf->headers_set_len,
3200
sizeof(ngx_http_script_copy_code_t));
3201
if (copy == NULL) {
3202
return NGX_ERROR;
3203
}
3204
3205
copy->code = (ngx_http_script_code_pt)
3206
ngx_http_script_copy_len_code;
3207
copy->len = src[i].key.len + sizeof(": ") - 1
3208
+ src[i].value.len + sizeof(CRLF) - 1;
3209
3210
3211
size = (sizeof(ngx_http_script_copy_code_t)
3212
+ src[i].key.len + sizeof(": ") - 1
3213
+ src[i].value.len + sizeof(CRLF) - 1
3214
+ sizeof(uintptr_t) - 1)
3215
& ~(sizeof(uintptr_t) - 1);
3216
3217
copy = ngx_array_push_n(conf->headers_set, size);
3218
if (copy == NULL) {
3219
return NGX_ERROR;
3220
}
3221
3222
copy->code = ngx_http_script_copy_code;
3223
copy->len = src[i].key.len + sizeof(": ") - 1
3224
+ src[i].value.len + sizeof(CRLF) - 1;
3225
3226
p = (u_char *) copy + sizeof(ngx_http_script_copy_code_t);
3227
3228
p = ngx_cpymem(p, src[i].key.data, src[i].key.len);
3229
*p++ = ':'; *p++ = ' ';
3230
p = ngx_cpymem(p, src[i].value.data, src[i].value.len);
3231
*p++ = CR; *p = LF;
3232
3233
} else {
3234
copy = ngx_array_push_n(conf->headers_set_len,
3235
sizeof(ngx_http_script_copy_code_t));
3236
if (copy == NULL) {
3237
return NGX_ERROR;
3238
}
3239
3240
copy->code = (ngx_http_script_code_pt)
3241
ngx_http_script_copy_len_code;
3242
copy->len = src[i].key.len + sizeof(": ") - 1;
3243
3244
3245
size = (sizeof(ngx_http_script_copy_code_t)
3246
+ src[i].key.len + sizeof(": ") - 1 + sizeof(uintptr_t) - 1)
3247
& ~(sizeof(uintptr_t) - 1);
3248
3249
copy = ngx_array_push_n(conf->headers_set, size);
3250
if (copy == NULL) {
3251
return NGX_ERROR;
3252
}
3253
3254
copy->code = ngx_http_script_copy_code;
3255
copy->len = src[i].key.len + sizeof(": ") - 1;
3256
3257
p = (u_char *) copy + sizeof(ngx_http_script_copy_code_t);
3258
p = ngx_cpymem(p, src[i].key.data, src[i].key.len);
3259
*p++ = ':'; *p = ' ';
3260
3261
3262
ngx_memzero(&sc, sizeof(ngx_http_script_compile_t));
3263
3264
sc.cf = cf;
3265
sc.source = &src[i].value;
3266
sc.flushes = &conf->flushes;
3267
sc.lengths = &conf->headers_set_len;
3268
sc.values = &conf->headers_set;
3269
3270
if (ngx_http_script_compile(&sc) != NGX_OK) {
3271
return NGX_ERROR;
3272
}
3273
3274
3275
copy = ngx_array_push_n(conf->headers_set_len,
3276
sizeof(ngx_http_script_copy_code_t));
3277
if (copy == NULL) {
3278
return NGX_ERROR;
3279
}
3280
3281
copy->code = (ngx_http_script_code_pt)
3282
ngx_http_script_copy_len_code;
3283
copy->len = sizeof(CRLF) - 1;
3284
3285
3286
size = (sizeof(ngx_http_script_copy_code_t)
3287
+ sizeof(CRLF) - 1 + sizeof(uintptr_t) - 1)
3288
& ~(sizeof(uintptr_t) - 1);
3289
3290
copy = ngx_array_push_n(conf->headers_set, size);
3291
if (copy == NULL) {
3292
return NGX_ERROR;
3293
}
3294
3295
copy->code = ngx_http_script_copy_code;
3296
copy->len = sizeof(CRLF) - 1;
3297
3298
p = (u_char *) copy + sizeof(ngx_http_script_copy_code_t);
3299
*p++ = CR; *p = LF;
3300
}
3301
3302
code = ngx_array_push_n(conf->headers_set_len, sizeof(uintptr_t));
3303
if (code == NULL) {
3304
return NGX_ERROR;
3305
}
3306
3307
*code = (uintptr_t) NULL;
3308
3309
code = ngx_array_push_n(conf->headers_set, sizeof(uintptr_t));
3310
if (code == NULL) {
3311
return NGX_ERROR;
3312
}
3313
3314
*code = (uintptr_t) NULL;
3315
}
3316
3317
code = ngx_array_push_n(conf->headers_set_len, sizeof(uintptr_t));
3318
if (code == NULL) {
3319
return NGX_ERROR;
3320
}
3321
3322
*code = (uintptr_t) NULL;
3323
3324
3325
hash.hash = &conf->headers_set_hash;
3326
hash.key = ngx_hash_key_lc;
3327
hash.max_size = conf->headers_hash_max_size;
3328
hash.bucket_size = conf->headers_hash_bucket_size;
3329
hash.name = "proxy_headers_hash";
3330
hash.pool = cf->pool;
3331
hash.temp_pool = NULL;
3332
3333
return ngx_hash_init(&hash, headers_names.elts, headers_names.nelts);
3334
}
3335
3336
3337
static char *
3338
ngx_http_proxy_pass(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
3339
{
3340
ngx_http_proxy_loc_conf_t *plcf = conf;
3341
3342
size_t add;
3343
u_short port;
3344
ngx_str_t *value, *url;
3345
ngx_url_t u;
3346
ngx_uint_t n;
3347
ngx_http_core_loc_conf_t *clcf;
3348
ngx_http_script_compile_t sc;
3349
3350
if (plcf->upstream.upstream || plcf->proxy_lengths) {
3351
return "is duplicate";
3352
}
3353
3354
clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module);
3355
3356
clcf->handler = ngx_http_proxy_handler;
3357
3358
if (clcf->name.data[clcf->name.len - 1] == '/') {
3359
clcf->auto_redirect = 1;
3360
}
3361
3362
value = cf->args->elts;
3363
3364
url = &value[1];
3365
3366
n = ngx_http_script_variables_count(url);
3367
3368
if (n) {
3369
3370
ngx_memzero(&sc, sizeof(ngx_http_script_compile_t));
3371
3372
sc.cf = cf;
3373
sc.source = url;
3374
sc.lengths = &plcf->proxy_lengths;
3375
sc.values = &plcf->proxy_values;
3376
sc.variables = n;
3377
sc.complete_lengths = 1;
3378
sc.complete_values = 1;
3379
3380
if (ngx_http_script_compile(&sc) != NGX_OK) {
3381
return NGX_CONF_ERROR;
3382
}
3383
3384
#if (NGX_HTTP_SSL)
3385
if (ngx_http_proxy_set_ssl(cf, plcf) != NGX_OK) {
3386
return NGX_CONF_ERROR;
3387
}
3388
#endif
3389
3390
return NGX_CONF_OK;
3391
}
3392
3393
if (ngx_strncasecmp(url->data, (u_char *) "http://", 7) == 0) {
3394
add = 7;
3395
port = 80;
3396
3397
} else if (ngx_strncasecmp(url->data, (u_char *) "https://", 8) == 0) {
3398
3399
#if (NGX_HTTP_SSL)
3400
if (ngx_http_proxy_set_ssl(cf, plcf) != NGX_OK) {
3401
return NGX_CONF_ERROR;
3402
}
3403
3404
add = 8;
3405
port = 443;
3406
#else
3407
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
3408
"https protocol requires SSL support");
3409
return NGX_CONF_ERROR;
3410
#endif
3411
3412
} else {
3413
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "invalid URL prefix");
3414
return NGX_CONF_ERROR;
3415
}
3416
3417
ngx_memzero(&u, sizeof(ngx_url_t));
3418
3419
u.url.len = url->len - add;
3420
u.url.data = url->data + add;
3421
u.default_port = port;
3422
u.uri_part = 1;
3423
u.no_resolve = 1;
3424
3425
plcf->upstream.upstream = ngx_http_upstream_add(cf, &u, 0);
3426
if (plcf->upstream.upstream == NULL) {
3427
return NGX_CONF_ERROR;
3428
}
3429
3430
plcf->vars.schema.len = add;
3431
plcf->vars.schema.data = url->data;
3432
plcf->vars.key_start = plcf->vars.schema;
3433
3434
ngx_http_proxy_set_vars(&u, &plcf->vars);
3435
3436
plcf->location = clcf->name;
3437
3438
if (clcf->named
3439
#if (NGX_PCRE)
3440
|| clcf->regex
3441
#endif
3442
|| clcf->noname)
3443
{
3444
if (plcf->vars.uri.len) {
3445
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
3446
"\"proxy_pass\" cannot have URI part in "
3447
"location given by regular expression, "
3448
"or inside named location, "
3449
"or inside \"if\" statement, "
3450
"or inside \"limit_except\" block");
3451
return NGX_CONF_ERROR;
3452
}
3453
3454
plcf->location.len = 0;
3455
}
3456
3457
plcf->url = *url;
3458
3459
return NGX_CONF_OK;
3460
}
3461
3462
3463
static char *
3464
ngx_http_proxy_redirect(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
3465
{
3466
ngx_http_proxy_loc_conf_t *plcf = conf;
3467
3468
u_char *p;
3469
ngx_str_t *value;
3470
ngx_http_proxy_rewrite_t *pr;
3471
ngx_http_compile_complex_value_t ccv;
3472
3473
if (plcf->redirect == 0) {
3474
return NGX_CONF_OK;
3475
}
3476
3477
plcf->redirect = 1;
3478
3479
value = cf->args->elts;
3480
3481
if (cf->args->nelts == 2) {
3482
if (ngx_strcmp(value[1].data, "off") == 0) {
3483
plcf->redirect = 0;
3484
plcf->redirects = NULL;
3485
return NGX_CONF_OK;
3486
}
3487
3488
if (ngx_strcmp(value[1].data, "false") == 0) {
3489
ngx_conf_log_error(NGX_LOG_ERR, cf, 0,
3490
"invalid parameter \"false\", use \"off\" instead");
3491
plcf->redirect = 0;
3492
plcf->redirects = NULL;
3493
return NGX_CONF_OK;
3494
}
3495
3496
if (ngx_strcmp(value[1].data, "default") != 0) {
3497
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
3498
"invalid parameter \"%V\"", &value[1]);
3499
return NGX_CONF_ERROR;
3500
}
3501
}
3502
3503
if (plcf->redirects == NULL) {
3504
plcf->redirects = ngx_array_create(cf->pool, 1,
3505
sizeof(ngx_http_proxy_rewrite_t));
3506
if (plcf->redirects == NULL) {
3507
return NGX_CONF_ERROR;
3508
}
3509
}
3510
3511
pr = ngx_array_push(plcf->redirects);
3512
if (pr == NULL) {
3513
return NGX_CONF_ERROR;
3514
}
3515
3516
if (ngx_strcmp(value[1].data, "default") == 0) {
3517
if (plcf->proxy_lengths) {
3518
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
3519
"\"proxy_redirect default\" cannot be used "
3520
"with \"proxy_pass\" directive with variables");
3521
return NGX_CONF_ERROR;
3522
}
3523
3524
if (plcf->url.data == NULL) {
3525
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
3526
"\"proxy_redirect default\" should be placed "
3527
"after the \"proxy_pass\" directive");
3528
return NGX_CONF_ERROR;
3529
}
3530
3531
pr->handler = ngx_http_proxy_rewrite_complex_handler;
3532
3533
ngx_memzero(&pr->pattern.complex, sizeof(ngx_http_complex_value_t));
3534
3535
ngx_memzero(&pr->replacement, sizeof(ngx_http_complex_value_t));
3536
3537
if (plcf->vars.uri.len) {
3538
pr->pattern.complex.value = plcf->url;
3539
pr->replacement.value = plcf->location;
3540
3541
} else {
3542
pr->pattern.complex.value.len = plcf->url.len + sizeof("/") - 1;
3543
3544
p = ngx_pnalloc(cf->pool, pr->pattern.complex.value.len);
3545
if (p == NULL) {
3546
return NGX_CONF_ERROR;
3547
}
3548
3549
pr->pattern.complex.value.data = p;
3550
3551
p = ngx_cpymem(p, plcf->url.data, plcf->url.len);
3552
*p = '/';
3553
3554
ngx_str_set(&pr->replacement.value, "/");
3555
}
3556
3557
return NGX_CONF_OK;
3558
}
3559
3560
3561
if (value[1].data[0] == '~') {
3562
value[1].len--;
3563
value[1].data++;
3564
3565
if (value[1].data[0] == '*') {
3566
value[1].len--;
3567
value[1].data++;
3568
3569
if (ngx_http_proxy_rewrite_regex(cf, pr, &value[1], 1) != NGX_OK) {
3570
return NGX_CONF_ERROR;
3571
}
3572
3573
} else {
3574
if (ngx_http_proxy_rewrite_regex(cf, pr, &value[1], 0) != NGX_OK) {
3575
return NGX_CONF_ERROR;
3576
}
3577
}
3578
3579
} else {
3580
3581
ngx_memzero(&ccv, sizeof(ngx_http_compile_complex_value_t));
3582
3583
ccv.cf = cf;
3584
ccv.value = &value[1];
3585
ccv.complex_value = &pr->pattern.complex;
3586
3587
if (ngx_http_compile_complex_value(&ccv) != NGX_OK) {
3588
return NGX_CONF_ERROR;
3589
}
3590
3591
pr->handler = ngx_http_proxy_rewrite_complex_handler;
3592
}
3593
3594
3595
ngx_memzero(&ccv, sizeof(ngx_http_compile_complex_value_t));
3596
3597
ccv.cf = cf;
3598
ccv.value = &value[2];
3599
ccv.complex_value = &pr->replacement;
3600
3601
if (ngx_http_compile_complex_value(&ccv) != NGX_OK) {
3602
return NGX_CONF_ERROR;
3603
}
3604
3605
return NGX_CONF_OK;
3606
}
3607
3608
3609
static char *
3610
ngx_http_proxy_cookie_domain(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
3611
{
3612
ngx_http_proxy_loc_conf_t *plcf = conf;
3613
3614
ngx_str_t *value;
3615
ngx_http_proxy_rewrite_t *pr;
3616
ngx_http_compile_complex_value_t ccv;
3617
3618
if (plcf->cookie_domains == NULL) {
3619
return NGX_CONF_OK;
3620
}
3621
3622
value = cf->args->elts;
3623
3624
if (cf->args->nelts == 2) {
3625
3626
if (ngx_strcmp(value[1].data, "off") == 0) {
3627
plcf->cookie_domains = NULL;
3628
return NGX_CONF_OK;
3629
}
3630
3631
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
3632
"invalid parameter \"%V\"", &value[1]);
3633
return NGX_CONF_ERROR;
3634
}
3635
3636
if (plcf->cookie_domains == NGX_CONF_UNSET_PTR) {
3637
plcf->cookie_domains = ngx_array_create(cf->pool, 1,
3638
sizeof(ngx_http_proxy_rewrite_t));
3639
if (plcf->cookie_domains == NULL) {
3640
return NGX_CONF_ERROR;
3641
}
3642
}
3643
3644
pr = ngx_array_push(plcf->cookie_domains);
3645
if (pr == NULL) {
3646
return NGX_CONF_ERROR;
3647
}
3648
3649
if (value[1].data[0] == '~') {
3650
value[1].len--;
3651
value[1].data++;
3652
3653
if (ngx_http_proxy_rewrite_regex(cf, pr, &value[1], 1) != NGX_OK) {
3654
return NGX_CONF_ERROR;
3655
}
3656
3657
} else {
3658
3659
if (value[1].data[0] == '.') {
3660
value[1].len--;
3661
value[1].data++;
3662
}
3663
3664
ngx_memzero(&ccv, sizeof(ngx_http_compile_complex_value_t));
3665
3666
ccv.cf = cf;
3667
ccv.value = &value[1];
3668
ccv.complex_value = &pr->pattern.complex;
3669
3670
if (ngx_http_compile_complex_value(&ccv) != NGX_OK) {
3671
return NGX_CONF_ERROR;
3672
}
3673
3674
pr->handler = ngx_http_proxy_rewrite_domain_handler;
3675
3676
if (value[2].data[0] == '.') {
3677
value[2].len--;
3678
value[2].data++;
3679
}
3680
}
3681
3682
ngx_memzero(&ccv, sizeof(ngx_http_compile_complex_value_t));
3683
3684
ccv.cf = cf;
3685
ccv.value = &value[2];
3686
ccv.complex_value = &pr->replacement;
3687
3688
if (ngx_http_compile_complex_value(&ccv) != NGX_OK) {
3689
return NGX_CONF_ERROR;
3690
}
3691
3692
return NGX_CONF_OK;
3693
}
3694
3695
3696
static char *
3697
ngx_http_proxy_cookie_path(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
3698
{
3699
ngx_http_proxy_loc_conf_t *plcf = conf;
3700
3701
ngx_str_t *value;
3702
ngx_http_proxy_rewrite_t *pr;
3703
ngx_http_compile_complex_value_t ccv;
3704
3705
if (plcf->cookie_paths == NULL) {
3706
return NGX_CONF_OK;
3707
}
3708
3709
value = cf->args->elts;
3710
3711
if (cf->args->nelts == 2) {
3712
3713
if (ngx_strcmp(value[1].data, "off") == 0) {
3714
plcf->cookie_paths = NULL;
3715
return NGX_CONF_OK;
3716
}
3717
3718
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
3719
"invalid parameter \"%V\"", &value[1]);
3720
return NGX_CONF_ERROR;
3721
}
3722
3723
if (plcf->cookie_paths == NGX_CONF_UNSET_PTR) {
3724
plcf->cookie_paths = ngx_array_create(cf->pool, 1,
3725
sizeof(ngx_http_proxy_rewrite_t));
3726
if (plcf->cookie_paths == NULL) {
3727
return NGX_CONF_ERROR;
3728
}
3729
}
3730
3731
pr = ngx_array_push(plcf->cookie_paths);
3732
if (pr == NULL) {
3733
return NGX_CONF_ERROR;
3734
}
3735
3736
if (value[1].data[0] == '~') {
3737
value[1].len--;
3738
value[1].data++;
3739
3740
if (value[1].data[0] == '*') {
3741
value[1].len--;
3742
value[1].data++;
3743
3744
if (ngx_http_proxy_rewrite_regex(cf, pr, &value[1], 1) != NGX_OK) {
3745
return NGX_CONF_ERROR;
3746
}
3747
3748
} else {
3749
if (ngx_http_proxy_rewrite_regex(cf, pr, &value[1], 0) != NGX_OK) {
3750
return NGX_CONF_ERROR;
3751
}
3752
}
3753
3754
} else {
3755
3756
ngx_memzero(&ccv, sizeof(ngx_http_compile_complex_value_t));
3757
3758
ccv.cf = cf;
3759
ccv.value = &value[1];
3760
ccv.complex_value = &pr->pattern.complex;
3761
3762
if (ngx_http_compile_complex_value(&ccv) != NGX_OK) {
3763
return NGX_CONF_ERROR;
3764
}
3765
3766
pr->handler = ngx_http_proxy_rewrite_complex_handler;
3767
}
3768
3769
ngx_memzero(&ccv, sizeof(ngx_http_compile_complex_value_t));
3770
3771
ccv.cf = cf;
3772
ccv.value = &value[2];
3773
ccv.complex_value = &pr->replacement;
3774
3775
if (ngx_http_compile_complex_value(&ccv) != NGX_OK) {
3776
return NGX_CONF_ERROR;
3777
}
3778
3779
return NGX_CONF_OK;
3780
}
3781
3782
3783
static ngx_int_t
3784
ngx_http_proxy_rewrite_regex(ngx_conf_t *cf, ngx_http_proxy_rewrite_t *pr,
3785
ngx_str_t *regex, ngx_uint_t caseless)
3786
{
3787
#if (NGX_PCRE)
3788
u_char errstr[NGX_MAX_CONF_ERRSTR];
3789
ngx_regex_compile_t rc;
3790
3791
ngx_memzero(&rc, sizeof(ngx_regex_compile_t));
3792
3793
rc.pattern = *regex;
3794
rc.err.len = NGX_MAX_CONF_ERRSTR;
3795
rc.err.data = errstr;
3796
3797
if (caseless) {
3798
rc.options = NGX_REGEX_CASELESS;
3799
}
3800
3801
pr->pattern.regex = ngx_http_regex_compile(cf, &rc);
3802
if (pr->pattern.regex == NULL) {
3803
return NGX_ERROR;
3804
}
3805
3806
pr->handler = ngx_http_proxy_rewrite_regex_handler;
3807
3808
return NGX_OK;
3809
3810
#else
3811
3812
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
3813
"using regex \"%V\" requires PCRE library", regex);
3814
return NGX_ERROR;
3815
3816
#endif
3817
}
3818
3819
3820
static char *
3821
ngx_http_proxy_store(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
3822
{
3823
ngx_http_proxy_loc_conf_t *plcf = conf;
3824
3825
ngx_str_t *value;
3826
ngx_http_script_compile_t sc;
3827
3828
if (plcf->upstream.store != NGX_CONF_UNSET
3829
|| plcf->upstream.store_lengths)
3830
{
3831
return "is duplicate";
3832
}
3833
3834
value = cf->args->elts;
3835
3836
if (ngx_strcmp(value[1].data, "off") == 0) {
3837
plcf->upstream.store = 0;
3838
return NGX_CONF_OK;
3839
}
3840
3841
#if (NGX_HTTP_CACHE)
3842
3843
if (plcf->upstream.cache != NGX_CONF_UNSET_PTR
3844
&& plcf->upstream.cache != NULL)
3845
{
3846
return "is incompatible with \"proxy_cache\"";
3847
}
3848
3849
#endif
3850
3851
if (ngx_strcmp(value[1].data, "on") == 0) {
3852
plcf->upstream.store = 1;
3853
return NGX_CONF_OK;
3854
}
3855
3856
/* include the terminating '\0' into script */
3857
value[1].len++;
3858
3859
ngx_memzero(&sc, sizeof(ngx_http_script_compile_t));
3860
3861
sc.cf = cf;
3862
sc.source = &value[1];
3863
sc.lengths = &plcf->upstream.store_lengths;
3864
sc.values = &plcf->upstream.store_values;
3865
sc.variables = ngx_http_script_variables_count(&value[1]);
3866
sc.complete_lengths = 1;
3867
sc.complete_values = 1;
3868
3869
if (ngx_http_script_compile(&sc) != NGX_OK) {
3870
return NGX_CONF_ERROR;
3871
}
3872
3873
return NGX_CONF_OK;
3874
}
3875
3876
3877
#if (NGX_HTTP_CACHE)
3878
3879
static char *
3880
ngx_http_proxy_cache(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
3881
{
3882
ngx_http_proxy_loc_conf_t *plcf = conf;
3883
3884
ngx_str_t *value;
3885
3886
value = cf->args->elts;
3887
3888
if (plcf->upstream.cache != NGX_CONF_UNSET_PTR) {
3889
return "is duplicate";
3890
}
3891
3892
if (ngx_strcmp(value[1].data, "off") == 0) {
3893
plcf->upstream.cache = NULL;
3894
return NGX_CONF_OK;
3895
}
3896
3897
if (plcf->upstream.store > 0 || plcf->upstream.store_lengths) {
3898
return "is incompatible with \"proxy_store\"";
3899
}
3900
3901
plcf->upstream.cache = ngx_shared_memory_add(cf, &value[1], 0,
3902
&ngx_http_proxy_module);
3903
if (plcf->upstream.cache == NULL) {
3904
return NGX_CONF_ERROR;
3905
}
3906
3907
return NGX_CONF_OK;
3908
}
3909
3910
3911
static char *
3912
ngx_http_proxy_cache_key(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
3913
{
3914
ngx_http_proxy_loc_conf_t *plcf = conf;
3915
3916
ngx_str_t *value;
3917
ngx_http_compile_complex_value_t ccv;
3918
3919
value = cf->args->elts;
3920
3921
if (plcf->cache_key.value.len) {
3922
return "is duplicate";
3923
}
3924
3925
ngx_memzero(&ccv, sizeof(ngx_http_compile_complex_value_t));
3926
3927
ccv.cf = cf;
3928
ccv.value = &value[1];
3929
ccv.complex_value = &plcf->cache_key;
3930
3931
if (ngx_http_compile_complex_value(&ccv) != NGX_OK) {
3932
return NGX_CONF_ERROR;
3933
}
3934
3935
return NGX_CONF_OK;
3936
}
3937
3938
#endif
3939
3940
3941
static char *
3942
ngx_http_proxy_lowat_check(ngx_conf_t *cf, void *post, void *data)
3943
{
3944
#if (NGX_FREEBSD)
3945
ssize_t *np = data;
3946
3947
if ((u_long) *np >= ngx_freebsd_net_inet_tcp_sendspace) {
3948
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
3949
"\"proxy_send_lowat\" must be less than %d "
3950
"(sysctl net.inet.tcp.sendspace)",
3951
ngx_freebsd_net_inet_tcp_sendspace);
3952
3953
return NGX_CONF_ERROR;
3954
}
3955
3956
#elif !(NGX_HAVE_SO_SNDLOWAT)
3957
ssize_t *np = data;
3958
3959
ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
3960
"\"proxy_send_lowat\" is not supported, ignored");
3961
3962
*np = 0;
3963
3964
#endif
3965
3966
return NGX_CONF_OK;
3967
}
3968
3969
3970
#if (NGX_HTTP_SSL)
3971
3972
static ngx_int_t
3973
ngx_http_proxy_set_ssl(ngx_conf_t *cf, ngx_http_proxy_loc_conf_t *plcf)
3974
{
3975
ngx_pool_cleanup_t *cln;
3976
3977
plcf->upstream.ssl = ngx_pcalloc(cf->pool, sizeof(ngx_ssl_t));
3978
if (plcf->upstream.ssl == NULL) {
3979
return NGX_ERROR;
3980
}
3981
3982
plcf->upstream.ssl->log = cf->log;
3983
3984
if (ngx_ssl_create(plcf->upstream.ssl,
3985
NGX_SSL_SSLv2|NGX_SSL_SSLv3|NGX_SSL_TLSv1
3986
|NGX_SSL_TLSv1_1|NGX_SSL_TLSv1_2,
3987
NULL)
3988
!= NGX_OK)
3989
{
3990
return NGX_ERROR;
3991
}
3992
3993
cln = ngx_pool_cleanup_add(cf->pool, 0);
3994
if (cln == NULL) {
3995
return NGX_ERROR;
3996
}
3997
3998
cln->handler = ngx_ssl_cleanup_ctx;
3999
cln->data = plcf->upstream.ssl;
4000
4001
return NGX_OK;
4002
}
4003
4004
#endif
4005
4006
4007
static void
4008
ngx_http_proxy_set_vars(ngx_url_t *u, ngx_http_proxy_vars_t *v)
4009
{
4010
if (u->family != AF_UNIX) {
4011
4012
if (u->no_port || u->port == u->default_port) {
4013
4014
v->host_header = u->host;
4015
4016
if (u->default_port == 80) {
4017
ngx_str_set(&v->port, "80");
4018
4019
} else {
4020
ngx_str_set(&v->port, "443");
4021
}
4022
4023
} else {
4024
v->host_header.len = u->host.len + 1 + u->port_text.len;
4025
v->host_header.data = u->host.data;
4026
v->port = u->port_text;
4027
}
4028
4029
v->key_start.len += v->host_header.len;
4030
4031
} else {
4032
ngx_str_set(&v->host_header, "localhost");
4033
ngx_str_null(&v->port);
4034
v->key_start.len += sizeof("unix:") - 1 + u->host.len + 1;
4035
}
4036
4037
v->uri = u->uri;
4038
}
Loggerhead is a web-based interface for Breezy
Version: 2.0.1