Mercurial > hg > nginx-quic
annotate src/core/ngx_buf.c @ 4367:9c4acdf9b276 stable-1.0
Merge of r4315:
Allowed add_header for proxied 206 replies.
It was working for nginx's own 206 replies as they are seen as 200 in the
headers filter module (range filter goes later in the headers filter chain),
but not for proxied replies.
author | Maxim Dounin <mdounin@mdounin.ru> |
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date | Wed, 14 Dec 2011 18:06:21 +0000 |
parents | cc13ff6d5c07 |
children | 5db098f97e0e 4919fb357a5d |
rev | line source |
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441
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1 |
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2 /* |
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3 * Copyright (C) Igor Sysoev |
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4 */ |
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7 #include <ngx_config.h> |
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8 #include <ngx_core.h> |
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10 |
499 | 11 ngx_buf_t * |
12 ngx_create_temp_buf(ngx_pool_t *pool, size_t size) | |
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13 { |
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14 ngx_buf_t *b; |
16
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15 |
501 | 16 b = ngx_calloc_buf(pool); |
17 if (b == NULL) { | |
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18 return NULL; |
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19 } |
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20 |
501 | 21 b->start = ngx_palloc(pool, size); |
22 if (b->start == NULL) { | |
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23 return NULL; |
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24 } |
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25 |
499 | 26 /* |
27 * set by ngx_calloc_buf(): | |
28 * | |
29 * b->file_pos = 0; | |
30 * b->file_last = 0; | |
31 * b->file = NULL; | |
32 * b->shadow = NULL; | |
33 * b->tag = 0; | |
509 | 34 * and flags |
499 | 35 */ |
36 | |
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37 b->pos = b->start; |
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38 b->last = b->start; |
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39 b->end = b->last + size; |
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40 b->temporary = 1; |
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41 |
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42 return b; |
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43 } |
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44 |
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45 |
499 | 46 ngx_chain_t * |
507 | 47 ngx_alloc_chain_link(ngx_pool_t *pool) |
48 { | |
49 ngx_chain_t *cl; | |
50 | |
51 cl = pool->chain; | |
52 | |
53 if (cl) { | |
54 pool->chain = cl->next; | |
55 return cl; | |
56 } | |
57 | |
58 cl = ngx_palloc(pool, sizeof(ngx_chain_t)); | |
59 if (cl == NULL) { | |
60 return NULL; | |
61 } | |
62 | |
63 return cl; | |
64 } | |
65 | |
66 | |
67 ngx_chain_t * | |
499 | 68 ngx_create_chain_of_bufs(ngx_pool_t *pool, ngx_bufs_t *bufs) |
160
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69 { |
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70 u_char *p; |
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71 ngx_int_t i; |
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72 ngx_buf_t *b; |
160
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73 ngx_chain_t *chain, *cl, **ll; |
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74 |
501 | 75 p = ngx_palloc(pool, bufs->num * bufs->size); |
76 if (p == NULL) { | |
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77 return NULL; |
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78 } |
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79 |
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80 ll = &chain; |
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81 |
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82 for (i = 0; i < bufs->num; i++) { |
501 | 83 |
84 b = ngx_calloc_buf(pool); | |
85 if (b == NULL) { | |
343
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86 return NULL; |
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87 } |
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88 |
499 | 89 /* |
90 * set by ngx_calloc_buf(): | |
91 * | |
92 * b->file_pos = 0; | |
93 * b->file_last = 0; | |
94 * b->file = NULL; | |
95 * b->shadow = NULL; | |
96 * b->tag = 0; | |
509 | 97 * and flags |
499 | 98 * |
99 */ | |
100 | |
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101 b->pos = p; |
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102 b->last = p; |
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103 b->temporary = 1; |
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104 |
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105 b->start = p; |
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106 p += bufs->size; |
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107 b->end = p; |
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108 |
501 | 109 cl = ngx_alloc_chain_link(pool); |
110 if (cl == NULL) { | |
343
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111 return NULL; |
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112 } |
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113 |
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114 cl->buf = b; |
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115 *ll = cl; |
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116 ll = &cl->next; |
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117 } |
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118 |
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119 *ll = NULL; |
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120 |
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121 return chain; |
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122 } |
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123 |
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124 |
499 | 125 ngx_int_t |
126 ngx_chain_add_copy(ngx_pool_t *pool, ngx_chain_t **chain, ngx_chain_t *in) | |
134
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127 { |
155
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128 ngx_chain_t *cl, **ll; |
134
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129 |
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130 ll = chain; |
134
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131 |
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132 for (cl = *chain; cl; cl = cl->next) { |
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133 ll = &cl->next; |
134
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134 } |
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135 |
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136 while (in) { |
501 | 137 cl = ngx_alloc_chain_link(pool); |
138 if (cl == NULL) { | |
139 return NGX_ERROR; | |
140 } | |
134
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141 |
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142 cl->buf = in->buf; |
155
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143 *ll = cl; |
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144 ll = &cl->next; |
134
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145 in = in->next; |
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146 } |
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147 |
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148 *ll = NULL; |
136
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149 |
134
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150 return NGX_OK; |
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151 } |
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152 |
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153 |
581 | 154 ngx_chain_t * |
155 ngx_chain_get_free_buf(ngx_pool_t *p, ngx_chain_t **free) | |
156 { | |
157 ngx_chain_t *cl; | |
158 | |
159 if (*free) { | |
160 cl = *free; | |
161 *free = cl->next; | |
162 cl->next = NULL; | |
163 return cl; | |
164 } | |
165 | |
166 cl = ngx_alloc_chain_link(p); | |
167 if (cl == NULL) { | |
168 return NULL; | |
169 } | |
170 | |
171 cl->buf = ngx_calloc_buf(p); | |
172 if (cl->buf == NULL) { | |
173 return NULL; | |
174 } | |
175 | |
176 cl->next = NULL; | |
177 | |
178 return cl; | |
179 } | |
180 | |
181 | |
499 | 182 void |
183 ngx_chain_update_chains(ngx_chain_t **free, ngx_chain_t **busy, | |
184 ngx_chain_t **out, ngx_buf_tag_t tag) | |
132
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185 { |
499 | 186 ngx_chain_t *cl; |
132
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187 |
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188 if (*busy == NULL) { |
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189 *busy = *out; |
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190 |
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191 } else { |
499 | 192 for (cl = *busy; cl->next; cl = cl->next) { /* void */ } |
455 | 193 |
499 | 194 cl->next = *out; |
132
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195 } |
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196 |
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197 *out = NULL; |
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198 |
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199 while (*busy) { |
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200 if (ngx_buf_size((*busy)->buf) != 0) { |
132
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201 break; |
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202 } |
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203 |
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204 if ((*busy)->buf->tag != tag) { |
135
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205 *busy = (*busy)->next; |
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206 continue; |
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207 } |
132
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208 |
452 | 209 (*busy)->buf->pos = (*busy)->buf->start; |
210 (*busy)->buf->last = (*busy)->buf->start; | |
132
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211 |
499 | 212 cl = *busy; |
213 *busy = cl->next; | |
214 cl->next = *free; | |
215 *free = cl; | |
132
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216 } |
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217 } |