Mercurial > hg > nginx-quic
annotate src/stream/ngx_stream_variables.h @ 8700:b09f055daa4e quic
QUIC: fixed handling of RETIRE_CONNECTION_ID frame.
Previously, the retired socket was not closed if it didn't match
active or backup.
New sockets could not be created (due to count limit), since retired socket
was not closed before calling ngx_quic_create_sockets().
When replacing retired socket, new socket is only requested after closing
old one, to avoid hitting the limit on the number of active connection ids.
Together with added restrictions, this fixes an issue when a current socket
could be closed during migration, recreated and erroneously reused leading
to null pointer dereference.
author | Vladimir Homutov <vl@nginx.com> |
---|---|
date | Thu, 18 Nov 2021 14:19:36 +0300 |
parents | 2a288909abc6 |
children |
rev | line source |
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6607 | 1 |
2 /* | |
3 * Copyright (C) Igor Sysoev | |
4 * Copyright (C) Nginx, Inc. | |
5 */ | |
6 | |
7 | |
8 #ifndef _NGX_STREAM_VARIABLES_H_INCLUDED_ | |
9 #define _NGX_STREAM_VARIABLES_H_INCLUDED_ | |
10 | |
11 | |
12 #include <ngx_config.h> | |
13 #include <ngx_core.h> | |
14 #include <ngx_stream.h> | |
15 | |
16 | |
17 typedef ngx_variable_value_t ngx_stream_variable_value_t; | |
18 | |
19 #define ngx_stream_variable(v) { sizeof(v) - 1, 1, 0, 0, 0, (u_char *) v } | |
20 | |
21 typedef struct ngx_stream_variable_s ngx_stream_variable_t; | |
22 | |
23 typedef void (*ngx_stream_set_variable_pt) (ngx_stream_session_t *s, | |
24 ngx_stream_variable_value_t *v, uintptr_t data); | |
25 typedef ngx_int_t (*ngx_stream_get_variable_pt) (ngx_stream_session_t *s, | |
26 ngx_stream_variable_value_t *v, uintptr_t data); | |
27 | |
28 | |
29 #define NGX_STREAM_VAR_CHANGEABLE 1 | |
30 #define NGX_STREAM_VAR_NOCACHEABLE 2 | |
31 #define NGX_STREAM_VAR_INDEXED 4 | |
32 #define NGX_STREAM_VAR_NOHASH 8 | |
6899
d2b2ff157da5
Variables: generic prefix variables.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6607
diff
changeset
|
33 #define NGX_STREAM_VAR_WEAK 16 |
d2b2ff157da5
Variables: generic prefix variables.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6607
diff
changeset
|
34 #define NGX_STREAM_VAR_PREFIX 32 |
6607 | 35 |
36 | |
37 struct ngx_stream_variable_s { | |
38 ngx_str_t name; /* must be first to build the hash */ | |
39 ngx_stream_set_variable_pt set_handler; | |
40 ngx_stream_get_variable_pt get_handler; | |
41 uintptr_t data; | |
42 ngx_uint_t flags; | |
43 ngx_uint_t index; | |
44 }; | |
45 | |
7077
2a288909abc6
Variables: macros for null variables.
Ruslan Ermilov <ru@nginx.com>
parents:
6899
diff
changeset
|
46 #define ngx_stream_null_variable { ngx_null_string, NULL, NULL, 0, 0, 0 } |
2a288909abc6
Variables: macros for null variables.
Ruslan Ermilov <ru@nginx.com>
parents:
6899
diff
changeset
|
47 |
6607 | 48 |
49 ngx_stream_variable_t *ngx_stream_add_variable(ngx_conf_t *cf, ngx_str_t *name, | |
50 ngx_uint_t flags); | |
51 ngx_int_t ngx_stream_get_variable_index(ngx_conf_t *cf, ngx_str_t *name); | |
52 ngx_stream_variable_value_t *ngx_stream_get_indexed_variable( | |
53 ngx_stream_session_t *s, ngx_uint_t index); | |
54 ngx_stream_variable_value_t *ngx_stream_get_flushed_variable( | |
55 ngx_stream_session_t *s, ngx_uint_t index); | |
56 | |
57 ngx_stream_variable_value_t *ngx_stream_get_variable(ngx_stream_session_t *s, | |
58 ngx_str_t *name, ngx_uint_t key); | |
59 | |
60 | |
61 #if (NGX_PCRE) | |
62 | |
63 typedef struct { | |
64 ngx_uint_t capture; | |
65 ngx_int_t index; | |
66 } ngx_stream_regex_variable_t; | |
67 | |
68 | |
69 typedef struct { | |
70 ngx_regex_t *regex; | |
71 ngx_uint_t ncaptures; | |
72 ngx_stream_regex_variable_t *variables; | |
73 ngx_uint_t nvariables; | |
74 ngx_str_t name; | |
75 } ngx_stream_regex_t; | |
76 | |
77 | |
78 typedef struct { | |
79 ngx_stream_regex_t *regex; | |
80 void *value; | |
81 } ngx_stream_map_regex_t; | |
82 | |
83 | |
84 ngx_stream_regex_t *ngx_stream_regex_compile(ngx_conf_t *cf, | |
85 ngx_regex_compile_t *rc); | |
86 ngx_int_t ngx_stream_regex_exec(ngx_stream_session_t *s, ngx_stream_regex_t *re, | |
87 ngx_str_t *str); | |
88 | |
89 #endif | |
90 | |
91 | |
92 typedef struct { | |
93 ngx_hash_combined_t hash; | |
94 #if (NGX_PCRE) | |
95 ngx_stream_map_regex_t *regex; | |
96 ngx_uint_t nregex; | |
97 #endif | |
98 } ngx_stream_map_t; | |
99 | |
100 | |
101 void *ngx_stream_map_find(ngx_stream_session_t *s, ngx_stream_map_t *map, | |
102 ngx_str_t *match); | |
103 | |
104 | |
105 ngx_int_t ngx_stream_variables_add_core_vars(ngx_conf_t *cf); | |
106 ngx_int_t ngx_stream_variables_init_vars(ngx_conf_t *cf); | |
107 | |
108 | |
109 extern ngx_stream_variable_value_t ngx_stream_variable_null_value; | |
110 extern ngx_stream_variable_value_t ngx_stream_variable_true_value; | |
111 | |
112 | |
113 #endif /* _NGX_STREAM_VARIABLES_H_INCLUDED_ */ |