Mercurial > hg > nginx-quic
annotate src/core/ngx_list.c @ 4664:356c91151658 stable-1.2
Merge of r4618: rewrite escaping fix (ticket #162).
The following code resulted in incorrect escaping of uri and possible
segfault:
location / {
rewrite ^(.*) $1?c=$1;
return 200 "$uri";
}
If there were arguments in a rewrite's replacement string, and length was
actually calculated (due to duplicate captures as in the example above,
or variables present), the is_args flag was set and incorrectly copied
after length calculation. This resulted in escaping applied to the uri part
of the replacement, resulting in incorrect escaping. Additionally, buffer
was allocated without escaping expected, thus this also resulted in buffer
overrun and possible segfault.
author | Maxim Dounin <mdounin@mdounin.ru> |
---|---|
date | Mon, 04 Jun 2012 11:07:19 +0000 |
parents | d620f497c50f |
children | a82f305487c2 |
rev | line source |
---|---|
441
da8c5707af39
nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
Igor Sysoev <igor@sysoev.ru>
parents:
416
diff
changeset
|
1 |
da8c5707af39
nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
Igor Sysoev <igor@sysoev.ru>
parents:
416
diff
changeset
|
2 /* |
444
42d11f017717
nginx-0.1.0-2004-09-29-20:00:49 import; remove years from copyright
Igor Sysoev <igor@sysoev.ru>
parents:
441
diff
changeset
|
3 * Copyright (C) Igor Sysoev |
4412 | 4 * Copyright (C) Nginx, Inc. |
441
da8c5707af39
nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
Igor Sysoev <igor@sysoev.ru>
parents:
416
diff
changeset
|
5 */ |
da8c5707af39
nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
Igor Sysoev <igor@sysoev.ru>
parents:
416
diff
changeset
|
6 |
414
388a842cbbe1
nginx-0.0.10-2004-09-03-19:50:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
7 |
388a842cbbe1
nginx-0.0.10-2004-09-03-19:50:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
8 #include <ngx_config.h> |
388a842cbbe1
nginx-0.0.10-2004-09-03-19:50:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
9 #include <ngx_core.h> |
388a842cbbe1
nginx-0.0.10-2004-09-03-19:50:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
10 |
388a842cbbe1
nginx-0.0.10-2004-09-03-19:50:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
11 |
766 | 12 ngx_list_t * |
13 ngx_list_create(ngx_pool_t *pool, ngx_uint_t n, size_t size) | |
14 { | |
15 ngx_list_t *list; | |
16 | |
17 list = ngx_palloc(pool, sizeof(ngx_list_t)); | |
18 if (list == NULL) { | |
19 return NULL; | |
20 } | |
21 | |
22 list->part.elts = ngx_palloc(pool, n * size); | |
23 if (list->part.elts == NULL) { | |
24 return NULL; | |
25 } | |
26 | |
27 list->part.nelts = 0; | |
28 list->part.next = NULL; | |
29 list->last = &list->part; | |
30 list->size = size; | |
31 list->nalloc = n; | |
32 list->pool = pool; | |
33 | |
34 return list; | |
35 } | |
36 | |
37 | |
38 void * | |
39 ngx_list_push(ngx_list_t *l) | |
414
388a842cbbe1
nginx-0.0.10-2004-09-03-19:50:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
40 { |
388a842cbbe1
nginx-0.0.10-2004-09-03-19:50:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
41 void *elt; |
388a842cbbe1
nginx-0.0.10-2004-09-03-19:50:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
42 ngx_list_part_t *last; |
388a842cbbe1
nginx-0.0.10-2004-09-03-19:50:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
43 |
388a842cbbe1
nginx-0.0.10-2004-09-03-19:50:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
44 last = l->last; |
388a842cbbe1
nginx-0.0.10-2004-09-03-19:50:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
45 |
388a842cbbe1
nginx-0.0.10-2004-09-03-19:50:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
46 if (last->nelts == l->nalloc) { |
388a842cbbe1
nginx-0.0.10-2004-09-03-19:50:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
47 |
388a842cbbe1
nginx-0.0.10-2004-09-03-19:50:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
48 /* the last part is full, allocate a new list part */ |
388a842cbbe1
nginx-0.0.10-2004-09-03-19:50:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
49 |
501 | 50 last = ngx_palloc(l->pool, sizeof(ngx_list_part_t)); |
51 if (last == NULL) { | |
414
388a842cbbe1
nginx-0.0.10-2004-09-03-19:50:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
52 return NULL; |
388a842cbbe1
nginx-0.0.10-2004-09-03-19:50:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
53 } |
388a842cbbe1
nginx-0.0.10-2004-09-03-19:50:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
54 |
501 | 55 last->elts = ngx_palloc(l->pool, l->nalloc * l->size); |
56 if (last->elts == NULL) { | |
414
388a842cbbe1
nginx-0.0.10-2004-09-03-19:50:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
57 return NULL; |
388a842cbbe1
nginx-0.0.10-2004-09-03-19:50:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
58 } |
388a842cbbe1
nginx-0.0.10-2004-09-03-19:50:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
59 |
388a842cbbe1
nginx-0.0.10-2004-09-03-19:50:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
60 last->nelts = 0; |
388a842cbbe1
nginx-0.0.10-2004-09-03-19:50:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
61 last->next = NULL; |
388a842cbbe1
nginx-0.0.10-2004-09-03-19:50:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
62 |
388a842cbbe1
nginx-0.0.10-2004-09-03-19:50:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
63 l->last->next = last; |
388a842cbbe1
nginx-0.0.10-2004-09-03-19:50:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
64 l->last = last; |
388a842cbbe1
nginx-0.0.10-2004-09-03-19:50:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
65 } |
388a842cbbe1
nginx-0.0.10-2004-09-03-19:50:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
66 |
388a842cbbe1
nginx-0.0.10-2004-09-03-19:50:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
67 elt = (char *) last->elts + l->size * last->nelts; |
388a842cbbe1
nginx-0.0.10-2004-09-03-19:50:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
68 last->nelts++; |
388a842cbbe1
nginx-0.0.10-2004-09-03-19:50:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
69 |
388a842cbbe1
nginx-0.0.10-2004-09-03-19:50:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
70 return elt; |
388a842cbbe1
nginx-0.0.10-2004-09-03-19:50:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
71 } |