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annotate src/http/modules/ngx_http_not_modified_filter_module.c @ 7653:8409f9df6219

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SSL: client certificate validation with OCSP (ticket #1534). OCSP validation for client certificates is enabled by the "ssl_ocsp" directive. OCSP responder can be optionally specified by "ssl_ocsp_responder". When session is reused, peer chain is not available for validation. If the verified chain contains certificates from the peer chain not available at the server, validation will fail.
author Roman Arutyunyan <arut@nginx.com>
date Fri, 22 May 2020 17:30:12 +0300
parents 8b6fa4842133
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
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da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 * Copyright (C) Nginx, Inc.
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5 */
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6
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e29909bd9b8a nginx-0.0.1-2003-09-28-23:29:06 import
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8 #include <ngx_config.h>
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9 #include <ngx_core.h>
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10 #include <ngx_http.h>
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e29909bd9b8a nginx-0.0.1-2003-09-28-23:29:06 import
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12
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13 static ngx_uint_t ngx_http_test_if_unmodified(ngx_http_request_t *r);
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14 static ngx_uint_t ngx_http_test_if_modified(ngx_http_request_t *r);
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15 static ngx_uint_t ngx_http_test_if_match(ngx_http_request_t *r,
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16 ngx_table_elt_t *header, ngx_uint_t weak);
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17 static ngx_int_t ngx_http_not_modified_filter_init(ngx_conf_t *cf);
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e29909bd9b8a nginx-0.0.1-2003-09-28-23:29:06 import
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e29909bd9b8a nginx-0.0.1-2003-09-28-23:29:06 import
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20 static ngx_http_module_t ngx_http_not_modified_filter_module_ctx = {
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21 NULL, /* preconfiguration */
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22 ngx_http_not_modified_filter_init, /* postconfiguration */
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23
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24 NULL, /* create main configuration */
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25 NULL, /* init main configuration */
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26
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27 NULL, /* create server configuration */
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28 NULL, /* merge server configuration */
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29
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30 NULL, /* create location configuration */
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31 NULL /* merge location configuration */
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32 };
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33
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34
e29909bd9b8a nginx-0.0.1-2003-09-28-23:29:06 import
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35 ngx_module_t ngx_http_not_modified_filter_module = {
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36 NGX_MODULE_V1,
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37 &ngx_http_not_modified_filter_module_ctx, /* module context */
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38 NULL, /* module directives */
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39 NGX_HTTP_MODULE, /* module type */
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40 NULL, /* init master */
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41 NULL, /* init module */
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42 NULL, /* init process */
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43 NULL, /* init thread */
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44 NULL, /* exit thread */
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45 NULL, /* exit process */
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46 NULL, /* exit master */
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47 NGX_MODULE_V1_PADDING
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48 };
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49
e29909bd9b8a nginx-0.0.1-2003-09-28-23:29:06 import
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50
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51 static ngx_http_output_header_filter_pt ngx_http_next_header_filter;
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52
e29909bd9b8a nginx-0.0.1-2003-09-28-23:29:06 import
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53
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54 static ngx_int_t
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55 ngx_http_not_modified_header_filter(ngx_http_request_t *r)
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56 {
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57 if (r->headers_out.status != NGX_HTTP_OK
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58 || r != r->main
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59 || r->disable_not_modified)
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60 {
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61 return ngx_http_next_header_filter(r);
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62 }
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63
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64 if (r->headers_in.if_unmodified_since
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65 && !ngx_http_test_if_unmodified(r))
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66 {
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67 return ngx_http_filter_finalize_request(r, NULL,
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68 NGX_HTTP_PRECONDITION_FAILED);
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69 }
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70
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71 if (r->headers_in.if_match
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72 && !ngx_http_test_if_match(r, r->headers_in.if_match, 0))
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73 {
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74 return ngx_http_filter_finalize_request(r, NULL,
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75 NGX_HTTP_PRECONDITION_FAILED);
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76 }
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77
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78 if (r->headers_in.if_modified_since || r->headers_in.if_none_match) {
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79
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80 if (r->headers_in.if_modified_since
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81 && ngx_http_test_if_modified(r))
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82 {
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83 return ngx_http_next_header_filter(r);
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84 }
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85
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86 if (r->headers_in.if_none_match
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87 && !ngx_http_test_if_match(r, r->headers_in.if_none_match, 1))
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88 {
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89 return ngx_http_next_header_filter(r);
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90 }
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91
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92 /* not modified */
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93
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94 r->headers_out.status = NGX_HTTP_NOT_MODIFIED;
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95 r->headers_out.status_line.len = 0;
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96 r->headers_out.content_type.len = 0;
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97 ngx_http_clear_content_length(r);
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98 ngx_http_clear_accept_ranges(r);
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99
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100 if (r->headers_out.content_encoding) {
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101 r->headers_out.content_encoding->hash = 0;
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102 r->headers_out.content_encoding = NULL;
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103 }
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104
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105 return ngx_http_next_header_filter(r);
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106 }
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107
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108 return ngx_http_next_header_filter(r);
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109 }
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110
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111
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112 static ngx_uint_t
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113 ngx_http_test_if_unmodified(ngx_http_request_t *r)
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114 {
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115 time_t iums;
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116
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117 if (r->headers_out.last_modified_time == (time_t) -1) {
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118 return 0;
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119 }
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120
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121 iums = ngx_parse_http_time(r->headers_in.if_unmodified_since->value.data,
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122 r->headers_in.if_unmodified_since->value.len);
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123
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124 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
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parents: 4744
diff changeset
125 "http iums:%T lm:%T", iums, r->headers_out.last_modified_time);
3814
e6e453203bae "If-Unmodified-Since" support
Igor Sysoev <igor@sysoev.ru>
parents: 3308
diff changeset
126
e6e453203bae "If-Unmodified-Since" support
Igor Sysoev <igor@sysoev.ru>
parents: 3308
diff changeset
127 if (iums >= r->headers_out.last_modified_time) {
4743
84cc73e01aa8 Not modified filter: tests separated from actions.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4412
diff changeset
128 return 1;
3814
e6e453203bae "If-Unmodified-Since" support
Igor Sysoev <igor@sysoev.ru>
parents: 3308
diff changeset
129 }
e6e453203bae "If-Unmodified-Since" support
Igor Sysoev <igor@sysoev.ru>
parents: 3308
diff changeset
130
4743
84cc73e01aa8 Not modified filter: tests separated from actions.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4412
diff changeset
131 return 0;
3814
e6e453203bae "If-Unmodified-Since" support
Igor Sysoev <igor@sysoev.ru>
parents: 3308
diff changeset
132 }
e6e453203bae "If-Unmodified-Since" support
Igor Sysoev <igor@sysoev.ru>
parents: 3308
diff changeset
133
e6e453203bae "If-Unmodified-Since" support
Igor Sysoev <igor@sysoev.ru>
parents: 3308
diff changeset
134
4743
84cc73e01aa8 Not modified filter: tests separated from actions.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4412
diff changeset
135 static ngx_uint_t
84cc73e01aa8 Not modified filter: tests separated from actions.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4412
diff changeset
136 ngx_http_test_if_modified(ngx_http_request_t *r)
3814
e6e453203bae "If-Unmodified-Since" support
Igor Sysoev <igor@sysoev.ru>
parents: 3308
diff changeset
137 {
e6e453203bae "If-Unmodified-Since" support
Igor Sysoev <igor@sysoev.ru>
parents: 3308
diff changeset
138 time_t ims;
e6e453203bae "If-Unmodified-Since" support
Igor Sysoev <igor@sysoev.ru>
parents: 3308
diff changeset
139 ngx_http_core_loc_conf_t *clcf;
135
e29909bd9b8a nginx-0.0.1-2003-09-28-23:29:06 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
140
5735
5fb1e57c758a Entity tags: explicit flag to skip not modified filter.
Maxim Dounin <mdounin@mdounin.ru>
parents: 5734
diff changeset
141 if (r->headers_out.last_modified_time == (time_t) -1) {
5fb1e57c758a Entity tags: explicit flag to skip not modified filter.
Maxim Dounin <mdounin@mdounin.ru>
parents: 5734
diff changeset
142 return 1;
5fb1e57c758a Entity tags: explicit flag to skip not modified filter.
Maxim Dounin <mdounin@mdounin.ru>
parents: 5734
diff changeset
143 }
5fb1e57c758a Entity tags: explicit flag to skip not modified filter.
Maxim Dounin <mdounin@mdounin.ru>
parents: 5734
diff changeset
144
2496
9081bbdccda1 if_modified_since off
Igor Sysoev <igor@sysoev.ru>
parents: 2361
diff changeset
145 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
9081bbdccda1 if_modified_since off
Igor Sysoev <igor@sysoev.ru>
parents: 2361
diff changeset
146
9081bbdccda1 if_modified_since off
Igor Sysoev <igor@sysoev.ru>
parents: 2361
diff changeset
147 if (clcf->if_modified_since == NGX_HTTP_IMS_OFF) {
4743
84cc73e01aa8 Not modified filter: tests separated from actions.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4412
diff changeset
148 return 1;
2496
9081bbdccda1 if_modified_since off
Igor Sysoev <igor@sysoev.ru>
parents: 2361
diff changeset
149 }
9081bbdccda1 if_modified_since off
Igor Sysoev <igor@sysoev.ru>
parents: 2361
diff changeset
150
6180
8b6fa4842133 Moved ngx_http_parse_time() to core, renamed accordingly.
Maxim Dounin <mdounin@mdounin.ru>
parents: 5735
diff changeset
151 ims = ngx_parse_http_time(r->headers_in.if_modified_since->value.data,
135
e29909bd9b8a nginx-0.0.1-2003-09-28-23:29:06 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
152 r->headers_in.if_modified_since->value.len);
577
4d9ea73a627a nginx-0.3.10-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 553
diff changeset
153
257
70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
diff changeset
154 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
5729
bb3d74fc4aea Not modified filter: debug log format fixed.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4744
diff changeset
155 "http ims:%T lm:%T", ims, r->headers_out.last_modified_time);
135
e29909bd9b8a nginx-0.0.1-2003-09-28-23:29:06 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
156
4743
84cc73e01aa8 Not modified filter: tests separated from actions.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4412
diff changeset
157 if (ims == r->headers_out.last_modified_time) {
84cc73e01aa8 Not modified filter: tests separated from actions.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4412
diff changeset
158 return 0;
135
e29909bd9b8a nginx-0.0.1-2003-09-28-23:29:06 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
159 }
e29909bd9b8a nginx-0.0.1-2003-09-28-23:29:06 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
160
4743
84cc73e01aa8 Not modified filter: tests separated from actions.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4412
diff changeset
161 if (clcf->if_modified_since == NGX_HTTP_IMS_EXACT
84cc73e01aa8 Not modified filter: tests separated from actions.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4412
diff changeset
162 || ims < r->headers_out.last_modified_time)
84cc73e01aa8 Not modified filter: tests separated from actions.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4412
diff changeset
163 {
84cc73e01aa8 Not modified filter: tests separated from actions.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4412
diff changeset
164 return 1;
3308
793ae4dd91e9 remove "Content-Encoding: gzip" in 304 response
Igor Sysoev <igor@sysoev.ru>
parents: 2702
diff changeset
165 }
793ae4dd91e9 remove "Content-Encoding: gzip" in 304 response
Igor Sysoev <igor@sysoev.ru>
parents: 2702
diff changeset
166
4743
84cc73e01aa8 Not modified filter: tests separated from actions.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4412
diff changeset
167 return 0;
135
e29909bd9b8a nginx-0.0.1-2003-09-28-23:29:06 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
168 }
e29909bd9b8a nginx-0.0.1-2003-09-28-23:29:06 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
169
e29909bd9b8a nginx-0.0.1-2003-09-28-23:29:06 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
170
4744
5b93a9ac60ed Entity tags: basic support in not modified filter.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4743
diff changeset
171 static ngx_uint_t
5734
af229f8cf987 Entity tags: weak comparison for If-None-Match.
Maxim Dounin <mdounin@mdounin.ru>
parents: 5729
diff changeset
172 ngx_http_test_if_match(ngx_http_request_t *r, ngx_table_elt_t *header,
af229f8cf987 Entity tags: weak comparison for If-None-Match.
Maxim Dounin <mdounin@mdounin.ru>
parents: 5729
diff changeset
173 ngx_uint_t weak)
4744
5b93a9ac60ed Entity tags: basic support in not modified filter.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4743
diff changeset
174 {
5b93a9ac60ed Entity tags: basic support in not modified filter.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4743
diff changeset
175 u_char *start, *end, ch;
5734
af229f8cf987 Entity tags: weak comparison for If-None-Match.
Maxim Dounin <mdounin@mdounin.ru>
parents: 5729
diff changeset
176 ngx_str_t etag, *list;
4744
5b93a9ac60ed Entity tags: basic support in not modified filter.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4743
diff changeset
177
5b93a9ac60ed Entity tags: basic support in not modified filter.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4743
diff changeset
178 list = &header->value;
5b93a9ac60ed Entity tags: basic support in not modified filter.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4743
diff changeset
179
5b93a9ac60ed Entity tags: basic support in not modified filter.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4743
diff changeset
180 if (list->len == 1 && list->data[0] == '*') {
5b93a9ac60ed Entity tags: basic support in not modified filter.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4743
diff changeset
181 return 1;
5b93a9ac60ed Entity tags: basic support in not modified filter.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4743
diff changeset
182 }
5b93a9ac60ed Entity tags: basic support in not modified filter.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4743
diff changeset
183
5b93a9ac60ed Entity tags: basic support in not modified filter.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4743
diff changeset
184 if (r->headers_out.etag == NULL) {
5b93a9ac60ed Entity tags: basic support in not modified filter.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4743
diff changeset
185 return 0;
5b93a9ac60ed Entity tags: basic support in not modified filter.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4743
diff changeset
186 }
5b93a9ac60ed Entity tags: basic support in not modified filter.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4743
diff changeset
187
5734
af229f8cf987 Entity tags: weak comparison for If-None-Match.
Maxim Dounin <mdounin@mdounin.ru>
parents: 5729
diff changeset
188 etag = r->headers_out.etag->value;
4744
5b93a9ac60ed Entity tags: basic support in not modified filter.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4743
diff changeset
189
5b93a9ac60ed Entity tags: basic support in not modified filter.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4743
diff changeset
190 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
5734
af229f8cf987 Entity tags: weak comparison for If-None-Match.
Maxim Dounin <mdounin@mdounin.ru>
parents: 5729
diff changeset
191 "http im:\"%V\" etag:%V", list, &etag);
af229f8cf987 Entity tags: weak comparison for If-None-Match.
Maxim Dounin <mdounin@mdounin.ru>
parents: 5729
diff changeset
192
af229f8cf987 Entity tags: weak comparison for If-None-Match.
Maxim Dounin <mdounin@mdounin.ru>
parents: 5729
diff changeset
193 if (weak
af229f8cf987 Entity tags: weak comparison for If-None-Match.
Maxim Dounin <mdounin@mdounin.ru>
parents: 5729
diff changeset
194 && etag.len > 2
af229f8cf987 Entity tags: weak comparison for If-None-Match.
Maxim Dounin <mdounin@mdounin.ru>
parents: 5729
diff changeset
195 && etag.data[0] == 'W'
af229f8cf987 Entity tags: weak comparison for If-None-Match.
Maxim Dounin <mdounin@mdounin.ru>
parents: 5729
diff changeset
196 && etag.data[1] == '/')
af229f8cf987 Entity tags: weak comparison for If-None-Match.
Maxim Dounin <mdounin@mdounin.ru>
parents: 5729
diff changeset
197 {
af229f8cf987 Entity tags: weak comparison for If-None-Match.
Maxim Dounin <mdounin@mdounin.ru>
parents: 5729
diff changeset
198 etag.len -= 2;
af229f8cf987 Entity tags: weak comparison for If-None-Match.
Maxim Dounin <mdounin@mdounin.ru>
parents: 5729
diff changeset
199 etag.data += 2;
af229f8cf987 Entity tags: weak comparison for If-None-Match.
Maxim Dounin <mdounin@mdounin.ru>
parents: 5729
diff changeset
200 }
4744
5b93a9ac60ed Entity tags: basic support in not modified filter.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4743
diff changeset
201
5b93a9ac60ed Entity tags: basic support in not modified filter.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4743
diff changeset
202 start = list->data;
5b93a9ac60ed Entity tags: basic support in not modified filter.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4743
diff changeset
203 end = list->data + list->len;
5b93a9ac60ed Entity tags: basic support in not modified filter.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4743
diff changeset
204
5b93a9ac60ed Entity tags: basic support in not modified filter.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4743
diff changeset
205 while (start < end) {
5b93a9ac60ed Entity tags: basic support in not modified filter.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4743
diff changeset
206
5734
af229f8cf987 Entity tags: weak comparison for If-None-Match.
Maxim Dounin <mdounin@mdounin.ru>
parents: 5729
diff changeset
207 if (weak
af229f8cf987 Entity tags: weak comparison for If-None-Match.
Maxim Dounin <mdounin@mdounin.ru>
parents: 5729
diff changeset
208 && end - start > 2
af229f8cf987 Entity tags: weak comparison for If-None-Match.
Maxim Dounin <mdounin@mdounin.ru>
parents: 5729
diff changeset
209 && start[0] == 'W'
af229f8cf987 Entity tags: weak comparison for If-None-Match.
Maxim Dounin <mdounin@mdounin.ru>
parents: 5729
diff changeset
210 && start[1] == '/')
af229f8cf987 Entity tags: weak comparison for If-None-Match.
Maxim Dounin <mdounin@mdounin.ru>
parents: 5729
diff changeset
211 {
af229f8cf987 Entity tags: weak comparison for If-None-Match.
Maxim Dounin <mdounin@mdounin.ru>
parents: 5729
diff changeset
212 start += 2;
af229f8cf987 Entity tags: weak comparison for If-None-Match.
Maxim Dounin <mdounin@mdounin.ru>
parents: 5729
diff changeset
213 }
af229f8cf987 Entity tags: weak comparison for If-None-Match.
Maxim Dounin <mdounin@mdounin.ru>
parents: 5729
diff changeset
214
af229f8cf987 Entity tags: weak comparison for If-None-Match.
Maxim Dounin <mdounin@mdounin.ru>
parents: 5729
diff changeset
215 if (etag.len > (size_t) (end - start)) {
4744
5b93a9ac60ed Entity tags: basic support in not modified filter.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4743
diff changeset
216 return 0;
5b93a9ac60ed Entity tags: basic support in not modified filter.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4743
diff changeset
217 }
5b93a9ac60ed Entity tags: basic support in not modified filter.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4743
diff changeset
218
5734
af229f8cf987 Entity tags: weak comparison for If-None-Match.
Maxim Dounin <mdounin@mdounin.ru>
parents: 5729
diff changeset
219 if (ngx_strncmp(start, etag.data, etag.len) != 0) {
4744
5b93a9ac60ed Entity tags: basic support in not modified filter.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4743
diff changeset
220 goto skip;
5b93a9ac60ed Entity tags: basic support in not modified filter.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4743
diff changeset
221 }
5b93a9ac60ed Entity tags: basic support in not modified filter.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4743
diff changeset
222
5734
af229f8cf987 Entity tags: weak comparison for If-None-Match.
Maxim Dounin <mdounin@mdounin.ru>
parents: 5729
diff changeset
223 start += etag.len;
4744
5b93a9ac60ed Entity tags: basic support in not modified filter.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4743
diff changeset
224
5b93a9ac60ed Entity tags: basic support in not modified filter.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4743
diff changeset
225 while (start < end) {
5b93a9ac60ed Entity tags: basic support in not modified filter.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4743
diff changeset
226 ch = *start;
5b93a9ac60ed Entity tags: basic support in not modified filter.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4743
diff changeset
227
5b93a9ac60ed Entity tags: basic support in not modified filter.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4743
diff changeset
228 if (ch == ' ' || ch == '\t') {
5b93a9ac60ed Entity tags: basic support in not modified filter.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4743
diff changeset
229 start++;
5b93a9ac60ed Entity tags: basic support in not modified filter.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4743
diff changeset
230 continue;
5b93a9ac60ed Entity tags: basic support in not modified filter.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4743
diff changeset
231 }
5b93a9ac60ed Entity tags: basic support in not modified filter.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4743
diff changeset
232
5b93a9ac60ed Entity tags: basic support in not modified filter.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4743
diff changeset
233 break;
5b93a9ac60ed Entity tags: basic support in not modified filter.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4743
diff changeset
234 }
5b93a9ac60ed Entity tags: basic support in not modified filter.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4743
diff changeset
235
5b93a9ac60ed Entity tags: basic support in not modified filter.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4743
diff changeset
236 if (start == end || *start == ',') {
5b93a9ac60ed Entity tags: basic support in not modified filter.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4743
diff changeset
237 return 1;
5b93a9ac60ed Entity tags: basic support in not modified filter.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4743
diff changeset
238 }
5b93a9ac60ed Entity tags: basic support in not modified filter.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4743
diff changeset
239
5b93a9ac60ed Entity tags: basic support in not modified filter.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4743
diff changeset
240 skip:
5b93a9ac60ed Entity tags: basic support in not modified filter.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4743
diff changeset
241
5b93a9ac60ed Entity tags: basic support in not modified filter.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4743
diff changeset
242 while (start < end && *start != ',') { start++; }
5b93a9ac60ed Entity tags: basic support in not modified filter.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4743
diff changeset
243 while (start < end) {
5b93a9ac60ed Entity tags: basic support in not modified filter.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4743
diff changeset
244 ch = *start;
5b93a9ac60ed Entity tags: basic support in not modified filter.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4743
diff changeset
245
5b93a9ac60ed Entity tags: basic support in not modified filter.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4743
diff changeset
246 if (ch == ' ' || ch == '\t' || ch == ',') {
5b93a9ac60ed Entity tags: basic support in not modified filter.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4743
diff changeset
247 start++;
5b93a9ac60ed Entity tags: basic support in not modified filter.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4743
diff changeset
248 continue;
5b93a9ac60ed Entity tags: basic support in not modified filter.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4743
diff changeset
249 }
5b93a9ac60ed Entity tags: basic support in not modified filter.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4743
diff changeset
250
5b93a9ac60ed Entity tags: basic support in not modified filter.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4743
diff changeset
251 break;
5b93a9ac60ed Entity tags: basic support in not modified filter.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4743
diff changeset
252 }
5b93a9ac60ed Entity tags: basic support in not modified filter.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4743
diff changeset
253 }
5b93a9ac60ed Entity tags: basic support in not modified filter.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4743
diff changeset
254
5b93a9ac60ed Entity tags: basic support in not modified filter.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4743
diff changeset
255 return 0;
5b93a9ac60ed Entity tags: basic support in not modified filter.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4743
diff changeset
256 }
5b93a9ac60ed Entity tags: basic support in not modified filter.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4743
diff changeset
257
5b93a9ac60ed Entity tags: basic support in not modified filter.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4743
diff changeset
258
2702
eace65d6092b style fix
Igor Sysoev <igor@sysoev.ru>
parents: 2592
diff changeset
259 static ngx_int_t
eace65d6092b style fix
Igor Sysoev <igor@sysoev.ru>
parents: 2592
diff changeset
260 ngx_http_not_modified_filter_init(ngx_conf_t *cf)
135
e29909bd9b8a nginx-0.0.1-2003-09-28-23:29:06 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
261 {
155
46eb23d9471d nginx-0.0.1-2003-10-22-20:38:26 import
Igor Sysoev <igor@sysoev.ru>
parents: 153
diff changeset
262 ngx_http_next_header_filter = ngx_http_top_header_filter;
135
e29909bd9b8a nginx-0.0.1-2003-09-28-23:29:06 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
263 ngx_http_top_header_filter = ngx_http_not_modified_header_filter;
e29909bd9b8a nginx-0.0.1-2003-09-28-23:29:06 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
264
e29909bd9b8a nginx-0.0.1-2003-09-28-23:29:06 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
265 return NGX_OK;
e29909bd9b8a nginx-0.0.1-2003-09-28-23:29:06 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
266 }