Mercurial > hg > nginx-quic
annotate src/core/ngx_buf.c @ 8750:3443c02ca1d1
SSL: $ssl_curve (ticket #2135).
The variable contains a negotiated curve used for the handshake key
exchange process. Known curves are listed by their names, unknown
ones are shown in hex.
Note that for resumed sessions in TLSv1.2 and older protocols,
$ssl_curve contains the curve used during the initial handshake,
while in TLSv1.3 it contains the curve used during the session
resumption (see the SSL_get_negotiated_group manual page for
details).
The variable is only meaningful when using OpenSSL 3.0 and above.
With older versions the variable is empty.
author | Sergey Kandaurov <pluknet@nginx.com> |
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date | Mon, 01 Nov 2021 18:09:34 +0300 |
parents | c7a8bdf5af55 |
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rev | line source |
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1 |
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2 /* |
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3 * Copyright (C) Igor Sysoev |
4412 | 4 * Copyright (C) Nginx, Inc. |
441
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5 */ |
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8 #include <ngx_config.h> |
100
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9 #include <ngx_core.h> |
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10 |
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11 |
499 | 12 ngx_buf_t * |
13 ngx_create_temp_buf(ngx_pool_t *pool, size_t size) | |
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14 { |
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15 ngx_buf_t *b; |
16
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16 |
501 | 17 b = ngx_calloc_buf(pool); |
18 if (b == NULL) { | |
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19 return NULL; |
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20 } |
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21 |
501 | 22 b->start = ngx_palloc(pool, size); |
23 if (b->start == NULL) { | |
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24 return NULL; |
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25 } |
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26 |
499 | 27 /* |
28 * set by ngx_calloc_buf(): | |
29 * | |
30 * b->file_pos = 0; | |
31 * b->file_last = 0; | |
32 * b->file = NULL; | |
33 * b->shadow = NULL; | |
34 * b->tag = 0; | |
509 | 35 * and flags |
499 | 36 */ |
37 | |
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38 b->pos = b->start; |
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39 b->last = b->start; |
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40 b->end = b->last + size; |
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41 b->temporary = 1; |
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42 |
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43 return b; |
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44 } |
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45 |
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46 |
499 | 47 ngx_chain_t * |
507 | 48 ngx_alloc_chain_link(ngx_pool_t *pool) |
49 { | |
50 ngx_chain_t *cl; | |
51 | |
52 cl = pool->chain; | |
53 | |
54 if (cl) { | |
55 pool->chain = cl->next; | |
56 return cl; | |
57 } | |
58 | |
59 cl = ngx_palloc(pool, sizeof(ngx_chain_t)); | |
60 if (cl == NULL) { | |
61 return NULL; | |
62 } | |
63 | |
64 return cl; | |
65 } | |
66 | |
67 | |
68 ngx_chain_t * | |
499 | 69 ngx_create_chain_of_bufs(ngx_pool_t *pool, ngx_bufs_t *bufs) |
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70 { |
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71 u_char *p; |
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72 ngx_int_t i; |
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73 ngx_buf_t *b; |
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74 ngx_chain_t *chain, *cl, **ll; |
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75 |
501 | 76 p = ngx_palloc(pool, bufs->num * bufs->size); |
77 if (p == NULL) { | |
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78 return NULL; |
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79 } |
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80 |
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81 ll = &chain; |
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82 |
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83 for (i = 0; i < bufs->num; i++) { |
501 | 84 |
85 b = ngx_calloc_buf(pool); | |
86 if (b == NULL) { | |
343
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87 return NULL; |
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88 } |
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89 |
499 | 90 /* |
91 * set by ngx_calloc_buf(): | |
92 * | |
93 * b->file_pos = 0; | |
94 * b->file_last = 0; | |
95 * b->file = NULL; | |
96 * b->shadow = NULL; | |
97 * b->tag = 0; | |
509 | 98 * and flags |
499 | 99 * |
100 */ | |
101 | |
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102 b->pos = p; |
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103 b->last = p; |
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104 b->temporary = 1; |
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105 |
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106 b->start = p; |
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107 p += bufs->size; |
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108 b->end = p; |
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109 |
501 | 110 cl = ngx_alloc_chain_link(pool); |
111 if (cl == NULL) { | |
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112 return NULL; |
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113 } |
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114 |
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115 cl->buf = b; |
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116 *ll = cl; |
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117 ll = &cl->next; |
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118 } |
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119 |
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120 *ll = NULL; |
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121 |
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122 return chain; |
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123 } |
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124 |
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125 |
499 | 126 ngx_int_t |
127 ngx_chain_add_copy(ngx_pool_t *pool, ngx_chain_t **chain, ngx_chain_t *in) | |
134
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128 { |
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129 ngx_chain_t *cl, **ll; |
134
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130 |
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131 ll = chain; |
134
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132 |
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133 for (cl = *chain; cl; cl = cl->next) { |
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134 ll = &cl->next; |
134
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135 } |
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136 |
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137 while (in) { |
501 | 138 cl = ngx_alloc_chain_link(pool); |
139 if (cl == NULL) { | |
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140 *ll = NULL; |
501 | 141 return NGX_ERROR; |
142 } | |
134
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143 |
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144 cl->buf = in->buf; |
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145 *ll = cl; |
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146 ll = &cl->next; |
134
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147 in = in->next; |
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148 } |
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149 |
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150 *ll = NULL; |
136
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151 |
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152 return NGX_OK; |
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153 } |
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154 |
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155 |
581 | 156 ngx_chain_t * |
157 ngx_chain_get_free_buf(ngx_pool_t *p, ngx_chain_t **free) | |
158 { | |
159 ngx_chain_t *cl; | |
160 | |
161 if (*free) { | |
162 cl = *free; | |
163 *free = cl->next; | |
164 cl->next = NULL; | |
165 return cl; | |
166 } | |
167 | |
168 cl = ngx_alloc_chain_link(p); | |
169 if (cl == NULL) { | |
170 return NULL; | |
171 } | |
172 | |
173 cl->buf = ngx_calloc_buf(p); | |
174 if (cl->buf == NULL) { | |
175 return NULL; | |
176 } | |
177 | |
178 cl->next = NULL; | |
179 | |
180 return cl; | |
181 } | |
182 | |
183 | |
499 | 184 void |
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185 ngx_chain_update_chains(ngx_pool_t *p, ngx_chain_t **free, ngx_chain_t **busy, |
499 | 186 ngx_chain_t **out, ngx_buf_tag_t tag) |
132
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187 { |
499 | 188 ngx_chain_t *cl; |
132
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189 |
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190 if (*out) { |
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191 if (*busy == NULL) { |
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192 *busy = *out; |
132
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193 |
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194 } else { |
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195 for (cl = *busy; cl->next; cl = cl->next) { /* void */ } |
455 | 196 |
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197 cl->next = *out; |
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198 } |
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199 |
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200 *out = NULL; |
132
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201 } |
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202 |
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203 while (*busy) { |
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204 cl = *busy; |
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205 |
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206 if (cl->buf->tag != tag) { |
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207 *busy = cl->next; |
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208 ngx_free_chain(p, cl); |
135
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209 continue; |
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210 } |
132
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211 |
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212 if (ngx_buf_size(cl->buf) != 0) { |
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213 break; |
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214 } |
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215 |
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216 cl->buf->pos = cl->buf->start; |
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217 cl->buf->last = cl->buf->start; |
132
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|
218 |
499 | 219 *busy = cl->next; |
220 cl->next = *free; | |
221 *free = cl; | |
132
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222 } |
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223 } |
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224 |
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225 |
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226 off_t |
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227 ngx_chain_coalesce_file(ngx_chain_t **in, off_t limit) |
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228 { |
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229 off_t total, size, aligned, fprev; |
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230 ngx_fd_t fd; |
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231 ngx_chain_t *cl; |
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232 |
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233 total = 0; |
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234 |
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235 cl = *in; |
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236 fd = cl->buf->file->fd; |
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237 |
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238 do { |
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239 size = cl->buf->file_last - cl->buf->file_pos; |
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240 |
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241 if (size > limit - total) { |
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242 size = limit - total; |
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243 |
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244 aligned = (cl->buf->file_pos + size + ngx_pagesize - 1) |
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245 & ~((off_t) ngx_pagesize - 1); |
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246 |
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247 if (aligned <= cl->buf->file_last) { |
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248 size = aligned - cl->buf->file_pos; |
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249 } |
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250 |
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251 total += size; |
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252 break; |
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253 } |
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254 |
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255 total += size; |
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256 fprev = cl->buf->file_pos + size; |
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257 cl = cl->next; |
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258 |
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259 } while (cl |
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260 && cl->buf->in_file |
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261 && total < limit |
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262 && fd == cl->buf->file->fd |
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263 && fprev == cl->buf->file_pos); |
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264 |
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265 *in = cl; |
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266 |
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267 return total; |
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268 } |
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269 |
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270 |
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271 ngx_chain_t * |
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272 ngx_chain_update_sent(ngx_chain_t *in, off_t sent) |
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273 { |
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274 off_t size; |
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275 |
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276 for ( /* void */ ; in; in = in->next) { |
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277 |
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278 if (ngx_buf_special(in->buf)) { |
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279 continue; |
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280 } |
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281 |
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282 if (sent == 0) { |
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283 break; |
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284 } |
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285 |
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286 size = ngx_buf_size(in->buf); |
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287 |
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288 if (sent >= size) { |
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289 sent -= size; |
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290 |
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291 if (ngx_buf_in_memory(in->buf)) { |
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292 in->buf->pos = in->buf->last; |
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293 } |
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294 |
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295 if (in->buf->in_file) { |
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296 in->buf->file_pos = in->buf->file_last; |
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297 } |
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298 |
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299 continue; |
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300 } |
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301 |
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302 if (ngx_buf_in_memory(in->buf)) { |
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303 in->buf->pos += (size_t) sent; |
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304 } |
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305 |
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306 if (in->buf->in_file) { |
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307 in->buf->file_pos += sent; |
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308 } |
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309 |
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310 break; |
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311 } |
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312 |
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313 return in; |
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314 } |