Mercurial > hg > nginx
annotate src/http/v3/ngx_http_v3_request.c @ 8230:31f7c697b6d9 quic
Fixed pointer increment while parsing HTTP/3 header.
| author | Roman Arutyunyan <arut@nginx.com> |
|---|---|
| date | Wed, 18 Mar 2020 15:28:20 +0300 |
| parents | 268f4389130d |
| children | 1e45c02f6376 |
| rev | line source |
|---|---|
| 8215 | 1 |
| 2 /* | |
| 3 * Copyright (C) Roman Arutyunyan | |
| 4 * Copyright (C) Nginx, Inc. | |
| 5 */ | |
| 6 | |
| 7 | |
| 8 #include <ngx_config.h> | |
| 9 #include <ngx_core.h> | |
| 10 #include <ngx_http.h> | |
| 11 | |
| 12 | |
| 13 static ngx_int_t ngx_http_v3_process_pseudo_header(ngx_http_request_t *r, | |
| 14 ngx_str_t *name, ngx_str_t *value); | |
| 15 | |
| 16 | |
| 17 struct { | |
| 18 ngx_str_t name; | |
| 19 ngx_uint_t method; | |
| 20 } ngx_http_v3_methods[] = { | |
| 21 | |
| 22 { ngx_string("GET"), NGX_HTTP_GET }, | |
| 23 { ngx_string("POST"), NGX_HTTP_POST }, | |
| 24 { ngx_string("HEAD"), NGX_HTTP_HEAD }, | |
| 25 { ngx_string("OPTIONS"), NGX_HTTP_OPTIONS }, | |
| 26 { ngx_string("PROPFIND"), NGX_HTTP_PROPFIND }, | |
| 27 { ngx_string("PUT"), NGX_HTTP_PUT }, | |
| 28 { ngx_string("MKCOL"), NGX_HTTP_MKCOL }, | |
| 29 { ngx_string("DELETE"), NGX_HTTP_DELETE }, | |
| 30 { ngx_string("COPY"), NGX_HTTP_COPY }, | |
| 31 { ngx_string("MOVE"), NGX_HTTP_MOVE }, | |
| 32 { ngx_string("PROPPATCH"), NGX_HTTP_PROPPATCH }, | |
| 33 { ngx_string("LOCK"), NGX_HTTP_LOCK }, | |
| 34 { ngx_string("UNLOCK"), NGX_HTTP_UNLOCK }, | |
| 35 { ngx_string("PATCH"), NGX_HTTP_PATCH }, | |
| 36 { ngx_string("TRACE"), NGX_HTTP_TRACE } | |
| 37 }; | |
| 38 | |
| 39 | |
| 40 ngx_int_t | |
|
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41 ngx_http_v3_parse_header(ngx_http_request_t *r, ngx_buf_t *b) |
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42 { |
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43 ngx_int_t rc; |
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44 ngx_str_t *name, *value; |
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45 ngx_connection_t *c; |
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46 ngx_http_v3_parse_headers_t *st; |
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47 enum { |
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48 sw_start = 0, |
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49 sw_prev, |
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50 sw_headers, |
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51 sw_last, |
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52 sw_done |
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53 }; |
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54 |
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55 c = r->connection; |
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56 st = r->h3_parse; |
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57 |
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58 if (st == NULL) { |
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59 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 parse header"); |
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60 |
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61 st = ngx_pcalloc(c->pool, sizeof(ngx_http_v3_parse_headers_t)); |
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62 if (st == NULL) { |
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63 goto failed; |
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64 } |
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65 |
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66 r->h3_parse = st; |
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67 } |
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68 |
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69 switch (r->state) { |
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70 |
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71 case sw_prev: |
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72 r->state = sw_headers; |
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73 return NGX_OK; |
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74 |
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75 case sw_done: |
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76 goto done; |
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77 |
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78 case sw_last: |
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79 r->state = sw_done; |
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80 return NGX_OK; |
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81 |
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82 default: |
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83 break; |
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84 } |
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85 |
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86 while (b->pos < b->last) { |
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87 rc = ngx_http_v3_parse_headers(c, st, *b->pos++); |
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88 |
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89 if (rc == NGX_ERROR) { |
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90 goto failed; |
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91 } |
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92 |
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93 if (rc == NGX_AGAIN) { |
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94 continue; |
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95 } |
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96 |
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97 name = &st->header_rep.header.name; |
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98 value = &st->header_rep.header.value; |
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99 |
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100 if (r->state == sw_start |
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101 && ngx_http_v3_process_pseudo_header(r, name, value) != NGX_OK) |
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102 { |
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103 if (rc == NGX_DONE) { |
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104 r->state = sw_last; |
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105 } else { |
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106 r->state = sw_prev; |
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107 } |
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108 |
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109 } else if (rc == NGX_DONE) { |
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110 r->state = sw_done; |
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111 } |
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112 |
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113 if (r->state == sw_start) { |
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114 continue; |
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115 } |
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116 |
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117 r->header_name_start = name->data; |
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118 r->header_name_end = name->data + name->len; |
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119 r->header_start = value->data; |
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120 r->header_end = value->data + value->len; |
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121 r->header_hash = ngx_hash_key(name->data, name->len); |
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122 |
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123 /* XXX r->lowcase_index = i; */ |
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124 |
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125 return NGX_OK; |
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126 } |
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127 |
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128 return NGX_AGAIN; |
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129 |
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130 failed: |
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131 |
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132 return r->state == sw_start ? NGX_HTTP_PARSE_INVALID_REQUEST |
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133 : NGX_HTTP_PARSE_INVALID_HEADER; |
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134 |
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135 done: |
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136 |
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137 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 parse header done"); |
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138 |
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139 return NGX_HTTP_PARSE_HEADER_DONE; |
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140 } |
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141 |
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142 #if 0 |
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143 ngx_int_t |
| 8215 | 144 ngx_http_v3_parse_header(ngx_http_request_t *r, ngx_buf_t *b, ngx_uint_t pseudo) |
| 145 { | |
| 146 u_char *p, ch; | |
| 147 ngx_str_t name, value; | |
| 148 ngx_int_t rc; | |
| 149 ngx_uint_t length, index, insert_count, sign, base, delta_base, | |
| 150 huffman, dynamic, offset; | |
| 151 ngx_connection_t *c; | |
| 152 ngx_http_v3_header_t *h; | |
| 153 enum { | |
| 154 sw_start = 0, | |
| 155 sw_length, | |
| 156 sw_length_1, | |
| 157 sw_length_2, | |
| 158 sw_length_3, | |
| 159 sw_header_block, | |
| 160 sw_req_insert_count, | |
| 161 sw_delta_base, | |
| 162 sw_read_delta_base, | |
| 163 sw_header, | |
| 164 sw_old_header, | |
| 165 sw_header_ri, | |
| 166 sw_header_pbi, | |
| 167 sw_header_lri, | |
| 168 sw_header_lpbi, | |
| 169 sw_header_l_name_len, | |
| 170 sw_header_l_name, | |
| 171 sw_header_value_len, | |
| 172 sw_header_read_value_len, | |
| 173 sw_header_value | |
| 174 } state; | |
| 175 | |
| 176 c = r->connection; | |
| 177 | |
| 178 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0, | |
| 179 "http3 parse header, pseudo:%ui", pseudo); | |
| 180 | |
| 181 if (r->state == sw_old_header) { | |
| 182 r->state = sw_header; | |
| 183 return NGX_OK; | |
| 184 } | |
| 185 | |
| 186 length = r->h3_length; | |
| 187 index = r->h3_index; | |
| 188 insert_count = r->h3_insert_count; | |
| 189 sign = r->h3_sign; | |
| 190 delta_base = r->h3_delta_base; | |
| 191 huffman = r->h3_huffman; | |
| 192 dynamic = r->h3_dynamic; | |
| 193 offset = r->h3_offset; | |
| 194 | |
| 195 name.data = r->header_name_start; | |
| 196 name.len = r->header_name_end - r->header_name_start; | |
| 197 value.data = r->header_start; | |
| 198 value.len = r->header_end - r->header_start; | |
| 199 | |
| 200 if (r->state == sw_start) { | |
| 201 length = 1; | |
| 202 } | |
| 203 | |
| 204 again: | |
| 205 | |
| 206 state = r->state; | |
| 207 | |
| 208 if (state == sw_header && length == 0) { | |
| 209 r->state = sw_start; | |
| 210 return NGX_HTTP_PARSE_HEADER_DONE; | |
| 211 } | |
| 212 | |
| 213 for (p = b->pos; p < b->last; p++) { | |
| 214 | |
| 215 if (state >= sw_header_block && length-- == 0) { | |
| 216 goto failed; | |
| 217 } | |
| 218 | |
| 219 ch = *p; | |
| 220 | |
| 221 switch (state) { | |
| 222 | |
| 223 case sw_start: | |
| 224 | |
| 225 if (ch != NGX_HTTP_V3_FRAME_HEADERS) { | |
| 226 goto failed; | |
| 227 } | |
| 228 | |
| 229 r->request_start = p; | |
| 230 state = sw_length; | |
| 231 break; | |
| 232 | |
| 233 case sw_length: | |
| 234 | |
| 235 length = ch; | |
| 236 if (length & 0xc0) { | |
| 237 state = sw_length_1; | |
| 238 break; | |
| 239 } | |
| 240 | |
| 241 state = sw_header_block; | |
| 242 break; | |
| 243 | |
| 244 case sw_length_1: | |
| 245 | |
| 246 length = (length << 8) + ch; | |
| 247 if ((length & 0xc000) != 0x4000) { | |
| 248 state = sw_length_2; | |
| 249 break; | |
| 250 } | |
| 251 | |
| 252 length &= 0x3fff; | |
| 253 state = sw_header_block; | |
| 254 break; | |
| 255 | |
| 256 case sw_length_2: | |
| 257 | |
| 258 length = (length << 8) + ch; | |
| 259 if ((length & 0xc00000) != 0x800000) { | |
| 260 state = sw_length_3; | |
| 261 break; | |
| 262 } | |
| 263 | |
|
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264 length &= 0x3fffff; |
|
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diff
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|
265 state = sw_header_block; |
|
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|
266 break; |
| 8215 | 267 |
| 268 case sw_length_3: | |
| 269 | |
|
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270 length = (length << 8) + ch; |
|
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271 length &= 0x3fffffff; |
| 8215 | 272 state = sw_header_block; |
| 273 break; | |
| 274 | |
| 275 case sw_header_block: | |
| 276 | |
| 277 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0, | |
| 278 "http3 header block length:%ui", length); | |
| 279 | |
| 280 if (ch != 0xff) { | |
| 281 insert_count = ch; | |
| 282 state = sw_delta_base; | |
| 283 break; | |
| 284 } | |
| 285 | |
| 286 insert_count = 0; | |
| 287 state = sw_req_insert_count; | |
| 288 break; | |
| 289 | |
| 290 case sw_req_insert_count: | |
| 291 | |
| 292 insert_count = (insert_count << 7) + (ch & 0x7f); | |
| 293 if (ch & 0x80) { | |
| 294 break; | |
| 295 } | |
| 296 | |
| 297 insert_count += 0xff; | |
| 298 state = sw_delta_base; | |
| 299 break; | |
| 300 | |
| 301 case sw_delta_base: | |
| 302 | |
| 303 sign = (ch & 0x80) ? 1 : 0; | |
| 304 delta_base = ch & 0x7f; | |
| 305 | |
| 306 if (delta_base != 0x7f) { | |
| 307 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, c->log, 0, | |
| 308 "http3 header block " | |
| 309 "insert_count:%ui, sign:%ui, delta_base:%ui", | |
| 310 insert_count, sign, delta_base); | |
| 311 goto done; | |
| 312 } | |
| 313 | |
| 314 delta_base = 0; | |
| 315 state = sw_read_delta_base; | |
| 316 break; | |
| 317 | |
| 318 case sw_read_delta_base: | |
| 319 | |
| 320 delta_base = (delta_base << 7) + (ch & 0x7f); | |
| 321 if (ch & 0x80) { | |
| 322 break; | |
| 323 } | |
| 324 | |
| 325 delta_base += 0x7f; | |
| 326 | |
| 327 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, c->log, 0, | |
| 328 "http3 header block " | |
| 329 "insert_count:%ui, sign:%ui, delta_base:%ui", | |
| 330 insert_count, sign, delta_base); | |
| 331 goto done; | |
| 332 | |
| 333 case sw_header: | |
| 334 | |
| 335 index = 0; | |
| 336 huffman = 0; | |
| 337 ngx_str_null(&name); | |
| 338 ngx_str_null(&value); | |
| 339 | |
| 340 if (ch & 0x80) { | |
| 341 /* Indexed Header Field */ | |
| 342 | |
| 343 dynamic = (ch & 0x40) ? 0 : 1; | |
| 344 index = ch & 0x3f; | |
| 345 | |
| 346 if (index != 0x3f) { | |
| 347 goto done; | |
| 348 } | |
| 349 | |
| 350 index = 0; | |
| 351 state = sw_header_ri; | |
| 352 break; | |
| 353 } | |
| 354 | |
| 355 if (ch & 0x40) { | |
| 356 /* Literal Header Field With Name Reference */ | |
| 357 | |
| 358 dynamic = (ch & 0x10) ? 0 : 1; | |
| 359 index = ch & 0x0f; | |
| 360 | |
| 361 if (index != 0x0f) { | |
| 362 state = sw_header_value_len; | |
| 363 break; | |
| 364 } | |
| 365 | |
| 366 index = 0; | |
| 367 state = sw_header_lri; | |
| 368 break; | |
| 369 } | |
| 370 | |
| 371 if (ch & 0x20) { | |
| 372 /* Literal Header Field Without Name Reference */ | |
| 373 | |
| 374 huffman = (ch & 0x08) ? 1 : 0; | |
| 375 name.len = ch & 0x07; | |
| 376 | |
| 377 if (name.len == 0) { | |
| 378 goto failed; | |
| 379 } | |
| 380 | |
| 381 if (name.len != 0x07) { | |
| 382 offset = 0; | |
| 383 state = sw_header_l_name; | |
| 384 break; | |
| 385 } | |
| 386 | |
| 387 name.len = 0; | |
| 388 state = sw_header_l_name_len; | |
| 389 break; | |
| 390 } | |
| 391 | |
| 392 if (ch & 10) { | |
| 393 /* Indexed Header Field With Post-Base Index */ | |
| 394 | |
| 395 dynamic = 2; | |
| 396 index = ch & 0x0f; | |
| 397 | |
| 398 if (index != 0x0f) { | |
| 399 goto done; | |
| 400 } | |
| 401 | |
| 402 index = 0; | |
| 403 state = sw_header_pbi; | |
| 404 break; | |
| 405 } | |
| 406 | |
| 407 /* Literal Header Field With Post-Base Name Reference */ | |
| 408 | |
| 409 dynamic = 2; | |
| 410 index = ch & 0x07; | |
| 411 | |
| 412 if (index != 0x07) { | |
| 413 state = sw_header_value_len; | |
| 414 break; | |
| 415 } | |
| 416 | |
| 417 index = 0; | |
| 418 state = sw_header_lpbi; | |
| 419 break; | |
| 420 | |
| 421 case sw_header_ri: | |
| 422 | |
| 423 index = (index << 7) + (ch & 0x7f); | |
| 424 if (ch & 0x80) { | |
| 425 break; | |
| 426 } | |
| 427 | |
| 428 index += 0x3f; | |
| 429 goto done; | |
| 430 | |
| 431 case sw_header_pbi: | |
| 432 | |
| 433 index = (index << 7) + (ch & 0x7f); | |
| 434 if (ch & 0x80) { | |
| 435 break; | |
| 436 } | |
| 437 | |
| 438 index += 0x0f; | |
| 439 goto done; | |
| 440 | |
| 441 case sw_header_lri: | |
| 442 | |
| 443 index = (index << 7) + (ch & 0x7f); | |
| 444 if (ch & 0x80) { | |
| 445 break; | |
| 446 } | |
| 447 | |
| 448 index += 0x0f; | |
| 449 state = sw_header_value_len; | |
| 450 break; | |
| 451 | |
| 452 case sw_header_lpbi: | |
| 453 | |
| 454 index = (index << 7) + (ch & 0x7f); | |
| 455 if (ch & 0x80) { | |
| 456 break; | |
| 457 } | |
| 458 | |
| 459 index += 0x07; | |
| 460 state = sw_header_value_len; | |
| 461 break; | |
| 462 | |
| 463 | |
| 464 case sw_header_l_name_len: | |
| 465 | |
| 466 name.len = (name.len << 7) + (ch & 0x7f); | |
| 467 if (ch & 0x80) { | |
| 468 break; | |
| 469 } | |
| 470 | |
| 471 name.len += 0x07; | |
| 472 offset = 0; | |
| 473 state = sw_header_l_name; | |
| 474 break; | |
| 475 | |
| 476 case sw_header_l_name: | |
| 477 if (offset++ == 0) { | |
| 478 name.data = p; | |
| 479 } | |
| 480 | |
| 481 if (offset != name.len) { | |
| 482 break; | |
| 483 } | |
| 484 | |
| 485 if (huffman) { | |
| 486 if (ngx_http_v3_decode_huffman(c, &name) != NGX_OK) { | |
| 487 goto failed; | |
| 488 } | |
| 489 } | |
| 490 | |
| 491 state = sw_header_value_len; | |
| 492 break; | |
| 493 | |
| 494 case sw_header_value_len: | |
| 495 | |
| 496 huffman = (ch & 0x80) ? 1 : 0; | |
| 497 value.len = ch & 0x7f; | |
| 498 | |
| 499 if (value.len == 0) { | |
| 500 value.data = p; | |
| 501 goto done; | |
| 502 } | |
| 503 | |
| 504 if (value.len != 0x7f) { | |
| 505 offset = 0; | |
| 506 state = sw_header_value; | |
| 507 break; | |
| 508 } | |
| 509 | |
| 510 value.len = 0; | |
| 511 state = sw_header_read_value_len; | |
| 512 break; | |
| 513 | |
| 514 case sw_header_read_value_len: | |
| 515 | |
| 516 value.len = (value.len << 7) + (ch & 0x7f); | |
| 517 if (ch & 0x80) { | |
| 518 break; | |
| 519 } | |
| 520 | |
| 521 value.len += 0x7f; | |
| 522 offset = 0; | |
| 523 state = sw_header_value; | |
| 524 break; | |
| 525 | |
| 526 case sw_header_value: | |
| 527 | |
| 528 if (offset++ == 0) { | |
| 529 value.data = p; | |
| 530 } | |
| 531 | |
| 532 if (offset != value.len) { | |
| 533 break; | |
| 534 } | |
| 535 | |
| 536 if (huffman) { | |
| 537 if (ngx_http_v3_decode_huffman(c, &value) != NGX_OK) { | |
| 538 goto failed; | |
| 539 } | |
| 540 } | |
| 541 | |
| 542 goto done; | |
| 543 | |
| 544 case sw_old_header: | |
| 545 | |
| 546 break; | |
| 547 } | |
| 548 } | |
| 549 | |
| 550 b->pos = p; | |
| 551 r->state = state; | |
| 552 r->h3_length = length; | |
| 553 r->h3_index = index; | |
| 554 r->h3_insert_count = insert_count; | |
| 555 r->h3_sign = sign; | |
| 556 r->h3_delta_base = delta_base; | |
| 557 r->h3_huffman = huffman; | |
| 558 r->h3_dynamic = dynamic; | |
| 559 r->h3_offset = offset; | |
| 560 | |
| 561 /* XXX fix large reallocations */ | |
| 562 r->header_name_start = name.data; | |
| 563 r->header_name_end = name.data + name.len; | |
| 564 r->header_start = value.data; | |
| 565 r->header_end = value.data + value.len; | |
| 566 | |
| 567 /* XXX r->lowcase_index = i; */ | |
| 568 | |
| 569 return NGX_AGAIN; | |
| 570 | |
| 571 done: | |
| 572 | |
| 573 b->pos = p + 1; | |
| 574 r->state = sw_header; | |
| 575 r->h3_length = length; | |
| 576 r->h3_insert_count = insert_count; | |
| 577 r->h3_sign = sign; | |
| 578 r->h3_delta_base = delta_base; | |
| 579 | |
| 580 if (state < sw_header) { | |
| 581 if (ngx_http_v3_check_insert_count(c, insert_count) != NGX_OK) { | |
| 582 return NGX_DONE; | |
| 583 } | |
| 584 | |
| 585 goto again; | |
| 586 } | |
| 587 | |
| 588 if (sign == 0) { | |
| 589 base = insert_count + delta_base; | |
| 590 } else { | |
| 591 base = insert_count - delta_base - 1; | |
| 592 } | |
| 593 | |
| 594 ngx_log_debug5(NGX_LOG_DEBUG_HTTP, c->log, 0, | |
| 595 "http3 header %s[%ui], base:%ui, \"%V\":\"%V\"", | |
| 596 dynamic ? "dynamic" : "static", index, base, &name, &value); | |
| 597 | |
| 598 if (name.data == NULL) { | |
| 599 | |
| 600 if (dynamic == 2) { | |
| 601 index = base - index - 1; | |
| 602 } else if (dynamic == 1) { | |
| 603 index += base; | |
| 604 } | |
| 605 | |
| 606 h = ngx_http_v3_lookup_table(c, dynamic, index); | |
| 607 if (h == NULL) { | |
| 608 goto failed; | |
| 609 } | |
| 610 | |
| 611 name = h->name; | |
| 612 | |
| 613 if (value.data == NULL) { | |
| 614 value = h->value; | |
| 615 } | |
| 616 } | |
| 617 | |
|
8219
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Temporary fix for header null-termination in HTTP/3.
Roman Arutyunyan <arut@nginx.com>
parents:
8215
diff
changeset
|
618 /* XXX ugly reallocation for the trailing '\0' */ |
|
1307308c3cf1
Temporary fix for header null-termination in HTTP/3.
Roman Arutyunyan <arut@nginx.com>
parents:
8215
diff
changeset
|
619 |
|
1307308c3cf1
Temporary fix for header null-termination in HTTP/3.
Roman Arutyunyan <arut@nginx.com>
parents:
8215
diff
changeset
|
620 p = ngx_pnalloc(c->pool, name.len + value.len + 2); |
|
1307308c3cf1
Temporary fix for header null-termination in HTTP/3.
Roman Arutyunyan <arut@nginx.com>
parents:
8215
diff
changeset
|
621 if (p == NULL) { |
|
1307308c3cf1
Temporary fix for header null-termination in HTTP/3.
Roman Arutyunyan <arut@nginx.com>
parents:
8215
diff
changeset
|
622 return NGX_ERROR; |
|
1307308c3cf1
Temporary fix for header null-termination in HTTP/3.
Roman Arutyunyan <arut@nginx.com>
parents:
8215
diff
changeset
|
623 } |
|
1307308c3cf1
Temporary fix for header null-termination in HTTP/3.
Roman Arutyunyan <arut@nginx.com>
parents:
8215
diff
changeset
|
624 |
|
1307308c3cf1
Temporary fix for header null-termination in HTTP/3.
Roman Arutyunyan <arut@nginx.com>
parents:
8215
diff
changeset
|
625 ngx_memcpy(p, name.data, name.len); |
|
1307308c3cf1
Temporary fix for header null-termination in HTTP/3.
Roman Arutyunyan <arut@nginx.com>
parents:
8215
diff
changeset
|
626 name.data = p; |
|
1307308c3cf1
Temporary fix for header null-termination in HTTP/3.
Roman Arutyunyan <arut@nginx.com>
parents:
8215
diff
changeset
|
627 ngx_memcpy(p + name.len + 1, value.data, value.len); |
|
1307308c3cf1
Temporary fix for header null-termination in HTTP/3.
Roman Arutyunyan <arut@nginx.com>
parents:
8215
diff
changeset
|
628 value.data = p + name.len + 1; |
|
1307308c3cf1
Temporary fix for header null-termination in HTTP/3.
Roman Arutyunyan <arut@nginx.com>
parents:
8215
diff
changeset
|
629 |
| 8215 | 630 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, c->log, 0, |
| 631 "http3 header \"%V\":\"%V\"", &name, &value); | |
| 632 | |
| 633 if (pseudo) { | |
| 634 rc = ngx_http_v3_process_pseudo_header(r, &name, &value); | |
| 635 | |
| 636 if (rc == NGX_ERROR) { | |
| 637 goto failed; | |
| 638 } | |
| 639 | |
| 640 if (rc == NGX_OK) { | |
| 641 r->request_end = p + 1; | |
| 642 goto again; | |
| 643 } | |
| 644 | |
| 645 /* rc == NGX_DONE */ | |
| 646 | |
| 647 r->state = sw_old_header; | |
| 648 } | |
| 649 | |
| 650 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0, | |
| 651 "http3 header left:%ui", length); | |
| 652 | |
| 653 r->header_name_start = name.data; | |
| 654 r->header_name_end = name.data + name.len; | |
| 655 r->header_start = value.data; | |
| 656 r->header_end = value.data + value.len; | |
| 657 r->header_hash = ngx_hash_key(name.data, name.len); /* XXX */ | |
| 658 | |
| 659 /* XXX r->lowcase_index = i; */ | |
| 660 | |
| 661 return NGX_OK; | |
| 662 | |
| 663 failed: | |
| 664 | |
| 665 return NGX_HTTP_PARSE_INVALID_REQUEST; | |
| 666 } | |
|
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Refactored HTTP/3 parser.
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parents:
8219
diff
changeset
|
667 #endif |
| 8215 | 668 |
| 669 | |
| 670 static ngx_int_t | |
| 671 ngx_http_v3_process_pseudo_header(ngx_http_request_t *r, ngx_str_t *name, | |
| 672 ngx_str_t *value) | |
| 673 { | |
| 674 ngx_uint_t i; | |
| 675 ngx_connection_t *c; | |
| 676 | |
|
8226
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Refactored HTTP/3 parser.
Roman Arutyunyan <arut@nginx.com>
parents:
8219
diff
changeset
|
677 if (name->len == 0 || name->data[0] != ':') { |
|
268f4389130d
Refactored HTTP/3 parser.
Roman Arutyunyan <arut@nginx.com>
parents:
8219
diff
changeset
|
678 return NGX_DECLINED; |
|
268f4389130d
Refactored HTTP/3 parser.
Roman Arutyunyan <arut@nginx.com>
parents:
8219
diff
changeset
|
679 } |
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Refactored HTTP/3 parser.
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parents:
8219
diff
changeset
|
680 |
| 8215 | 681 c = r->connection; |
| 682 | |
| 683 if (name->len == 7 && ngx_strncmp(name->data, ":method", 7) == 0) { | |
| 684 r->method_start = value->data; | |
| 685 r->method_end = value->data + value->len; | |
| 686 | |
| 687 for (i = 0; i < sizeof(ngx_http_v3_methods) | |
| 688 / sizeof(ngx_http_v3_methods[0]); i++) | |
| 689 { | |
| 690 if (value->len == ngx_http_v3_methods[i].name.len | |
| 691 && ngx_strncmp(value->data, ngx_http_v3_methods[i].name.data, | |
| 692 value->len) == 0) | |
| 693 { | |
| 694 r->method = ngx_http_v3_methods[i].method; | |
| 695 break; | |
| 696 } | |
| 697 } | |
| 698 | |
| 699 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, c->log, 0, | |
| 700 "http3 method \"%V\" %ui", value, r->method); | |
| 701 return NGX_OK; | |
| 702 } | |
| 703 | |
| 704 if (name->len == 5 && ngx_strncmp(name->data, ":path", 5) == 0) { | |
| 705 r->uri_start = value->data; | |
| 706 r->uri_end = value->data + value->len; | |
| 707 | |
| 708 if (ngx_http_parse_uri(r) != NGX_OK) { | |
| 709 ngx_log_error(NGX_LOG_INFO, c->log, 0, | |
| 710 "client sent invalid :path header: \"%V\"", value); | |
| 711 return NGX_ERROR; | |
| 712 } | |
| 713 | |
| 714 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0, | |
| 715 "http3 path \"%V\"", value); | |
| 716 | |
| 717 return NGX_OK; | |
| 718 } | |
| 719 | |
| 720 if (name->len == 7 && ngx_strncmp(name->data, ":scheme", 7) == 0) { | |
| 721 r->schema_start = value->data; | |
| 722 r->schema_end = value->data + value->len; | |
| 723 | |
| 724 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0, | |
| 725 "http3 schema \"%V\"", value); | |
| 726 | |
| 727 return NGX_OK; | |
| 728 } | |
| 729 | |
| 730 if (name->len == 10 && ngx_strncmp(name->data, ":authority", 10) == 0) { | |
| 731 r->host_start = value->data; | |
| 732 r->host_end = value->data + value->len; | |
| 733 | |
| 734 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0, | |
| 735 "http3 authority \"%V\"", value); | |
| 736 | |
| 737 return NGX_OK; | |
| 738 } | |
| 739 | |
|
8226
268f4389130d
Refactored HTTP/3 parser.
Roman Arutyunyan <arut@nginx.com>
parents:
8219
diff
changeset
|
740 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, c->log, 0, |
|
268f4389130d
Refactored HTTP/3 parser.
Roman Arutyunyan <arut@nginx.com>
parents:
8219
diff
changeset
|
741 "http3 unknown pseudo header \"%V\" \"%V\"", name, value); |
| 8215 | 742 |
|
8226
268f4389130d
Refactored HTTP/3 parser.
Roman Arutyunyan <arut@nginx.com>
parents:
8219
diff
changeset
|
743 return NGX_OK; |
| 8215 | 744 } |
| 745 | |
| 746 | |
| 747 ngx_chain_t * | |
| 748 ngx_http_v3_create_header(ngx_http_request_t *r) | |
| 749 { | |
| 750 u_char *p; | |
| 751 size_t len, hlen, n; | |
| 752 ngx_buf_t *b; | |
| 753 ngx_uint_t i, j; | |
| 754 ngx_chain_t *hl, *cl, *bl; | |
| 755 ngx_list_part_t *part; | |
| 756 ngx_table_elt_t *header; | |
| 757 ngx_connection_t *c; | |
| 758 ngx_http_core_loc_conf_t *clcf; | |
| 759 | |
| 760 c = r->connection; | |
| 761 | |
| 762 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 create header"); | |
| 763 | |
| 764 /* XXX support chunked body in the chunked filter */ | |
| 765 if (r->headers_out.content_length_n == -1) { | |
| 766 return NULL; | |
| 767 } | |
| 768 | |
| 769 len = 0; | |
| 770 | |
| 771 if (r->headers_out.status == NGX_HTTP_OK) { | |
| 772 len += ngx_http_v3_encode_prefix_int(NULL, 25, 6); | |
| 773 | |
| 774 } else { | |
| 775 len += 3 + ngx_http_v3_encode_prefix_int(NULL, 25, 4) | |
| 776 + ngx_http_v3_encode_prefix_int(NULL, 3, 7); | |
| 777 } | |
| 778 | |
| 779 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); | |
| 780 | |
| 781 if (r->headers_out.server == NULL) { | |
| 782 if (clcf->server_tokens == NGX_HTTP_SERVER_TOKENS_ON) { | |
| 783 n = sizeof(NGINX_VER) - 1; | |
| 784 | |
| 785 } else if (clcf->server_tokens == NGX_HTTP_SERVER_TOKENS_BUILD) { | |
| 786 n = sizeof(NGINX_VER_BUILD) - 1; | |
| 787 | |
| 788 } else { | |
| 789 n = sizeof("nginx") - 1; | |
| 790 } | |
| 791 | |
| 792 len += ngx_http_v3_encode_prefix_int(NULL, 92, 4) | |
| 793 + ngx_http_v3_encode_prefix_int(NULL, n, 7) + n; | |
| 794 } | |
| 795 | |
| 796 if (r->headers_out.date == NULL) { | |
| 797 len += ngx_http_v3_encode_prefix_int(NULL, 6, 4) | |
| 798 + ngx_http_v3_encode_prefix_int(NULL, ngx_cached_http_time.len, | |
| 799 7) | |
| 800 + ngx_cached_http_time.len; | |
| 801 } | |
| 802 | |
| 803 if (r->headers_out.content_type.len) { | |
| 804 n = r->headers_out.content_type.len; | |
| 805 | |
| 806 if (r->headers_out.content_type_len == r->headers_out.content_type.len | |
| 807 && r->headers_out.charset.len) | |
| 808 { | |
| 809 n += sizeof("; charset=") - 1 + r->headers_out.charset.len; | |
| 810 } | |
| 811 | |
| 812 len += ngx_http_v3_encode_prefix_int(NULL, 53, 4) | |
| 813 + ngx_http_v3_encode_prefix_int(NULL, n, 7) + n; | |
| 814 } | |
| 815 | |
| 816 if (r->headers_out.content_length_n == 0) { | |
| 817 len += ngx_http_v3_encode_prefix_int(NULL, 4, 6); | |
| 818 | |
| 819 } else { | |
| 820 len += ngx_http_v3_encode_prefix_int(NULL, 4, 4) + 1 + NGX_OFF_T_LEN; | |
| 821 } | |
| 822 | |
| 823 if (r->headers_out.last_modified == NULL | |
| 824 && r->headers_out.last_modified_time != -1) | |
| 825 { | |
| 826 len += ngx_http_v3_encode_prefix_int(NULL, 10, 4) + 1 | |
| 827 + sizeof("Last-Modified: Mon, 28 Sep 1970 06:00:00 GMT"); | |
| 828 } | |
| 829 | |
| 830 /* XXX location */ | |
| 831 | |
| 832 #if (NGX_HTTP_GZIP) | |
| 833 if (r->gzip_vary) { | |
| 834 if (clcf->gzip_vary) { | |
| 835 /* Vary: Accept-Encoding */ | |
| 836 len += ngx_http_v3_encode_prefix_int(NULL, 59, 6); | |
| 837 | |
| 838 } else { | |
| 839 r->gzip_vary = 0; | |
| 840 } | |
| 841 } | |
| 842 #endif | |
| 843 | |
| 844 part = &r->headers_out.headers.part; | |
| 845 header = part->elts; | |
| 846 | |
| 847 for (i = 0; /* void */; i++) { | |
| 848 | |
| 849 if (i >= part->nelts) { | |
| 850 if (part->next == NULL) { | |
| 851 break; | |
| 852 } | |
| 853 | |
| 854 part = part->next; | |
| 855 header = part->elts; | |
| 856 i = 0; | |
| 857 } | |
| 858 | |
| 859 if (header[i].hash == 0) { | |
| 860 continue; | |
| 861 } | |
| 862 | |
| 863 len += ngx_http_v3_encode_prefix_int(NULL, header[i].key.len, 3) | |
| 864 + header[i].key.len | |
| 865 + ngx_http_v3_encode_prefix_int(NULL, header[i].value.len, 7 ) | |
| 866 + header[i].value.len; | |
| 867 } | |
| 868 | |
| 869 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 header len:%uz", len); | |
| 870 | |
| 871 b = ngx_create_temp_buf(r->pool, len); | |
| 872 if (b == NULL) { | |
| 873 return NULL; | |
| 874 } | |
| 875 | |
| 876 *b->last++ = 0; | |
| 877 *b->last++ = 0; | |
| 878 | |
| 879 if (r->headers_out.status == NGX_HTTP_OK) { | |
| 880 /* :status: 200 */ | |
| 881 *b->last = 0xc0; | |
| 882 b->last = (u_char *) ngx_http_v3_encode_prefix_int(b->last, 25, 6); | |
| 883 | |
| 884 } else { | |
| 885 /* :status: 200 */ | |
| 886 *b->last = 0x70; | |
| 887 b->last = (u_char *) ngx_http_v3_encode_prefix_int(b->last, 25, 4); | |
| 888 *b->last = 0; | |
| 889 b->last = (u_char *) ngx_http_v3_encode_prefix_int(b->last, 3, 7); | |
|
8226
268f4389130d
Refactored HTTP/3 parser.
Roman Arutyunyan <arut@nginx.com>
parents:
8219
diff
changeset
|
890 b->last = ngx_sprintf(b->last, "%03ui", r->headers_out.status); |
| 8215 | 891 } |
| 892 | |
| 893 if (r->headers_out.server == NULL) { | |
| 894 if (clcf->server_tokens == NGX_HTTP_SERVER_TOKENS_ON) { | |
| 895 p = (u_char *) NGINX_VER; | |
| 896 n = sizeof(NGINX_VER) - 1; | |
| 897 | |
| 898 } else if (clcf->server_tokens == NGX_HTTP_SERVER_TOKENS_BUILD) { | |
| 899 p = (u_char *) NGINX_VER_BUILD; | |
| 900 n = sizeof(NGINX_VER_BUILD) - 1; | |
| 901 | |
| 902 } else { | |
| 903 p = (u_char *) "nginx"; | |
| 904 n = sizeof("nginx") - 1; | |
| 905 } | |
| 906 | |
| 907 /* server */ | |
| 908 *b->last = 0x70; | |
| 909 b->last = (u_char *) ngx_http_v3_encode_prefix_int(b->last, 92, 4); | |
| 910 *b->last = 0; | |
| 911 b->last = (u_char *) ngx_http_v3_encode_prefix_int(b->last, n, 7); | |
| 912 b->last = ngx_cpymem(b->last, p, n); | |
| 913 } | |
| 914 | |
| 915 if (r->headers_out.date == NULL) { | |
| 916 /* date */ | |
| 917 *b->last = 0x70; | |
| 918 b->last = (u_char *) ngx_http_v3_encode_prefix_int(b->last, 6, 4); | |
| 919 *b->last = 0; | |
| 920 b->last = (u_char *) ngx_http_v3_encode_prefix_int(b->last, | |
| 921 ngx_cached_http_time.len, 7); | |
| 922 b->last = ngx_cpymem(b->last, ngx_cached_http_time.data, | |
| 923 ngx_cached_http_time.len); | |
| 924 } | |
| 925 | |
| 926 if (r->headers_out.content_type.len) { | |
| 927 n = r->headers_out.content_type.len; | |
| 928 | |
| 929 if (r->headers_out.content_type_len == r->headers_out.content_type.len | |
| 930 && r->headers_out.charset.len) | |
| 931 { | |
| 932 n += sizeof("; charset=") - 1 + r->headers_out.charset.len; | |
| 933 } | |
| 934 | |
| 935 /* content-type: text/plain */ | |
| 936 *b->last = 0x70; | |
| 937 b->last = (u_char *) ngx_http_v3_encode_prefix_int(b->last, 53, 4); | |
| 938 *b->last = 0; | |
| 939 b->last = (u_char *) ngx_http_v3_encode_prefix_int(b->last, n, 7); | |
| 940 | |
| 941 p = b->last; | |
| 942 b->last = ngx_copy(b->last, r->headers_out.content_type.data, | |
| 943 r->headers_out.content_type.len); | |
| 944 | |
| 945 if (r->headers_out.content_type_len == r->headers_out.content_type.len | |
| 946 && r->headers_out.charset.len) | |
| 947 { | |
| 948 b->last = ngx_cpymem(b->last, "; charset=", | |
| 949 sizeof("; charset=") - 1); | |
| 950 b->last = ngx_copy(b->last, r->headers_out.charset.data, | |
| 951 r->headers_out.charset.len); | |
| 952 | |
| 953 /* update r->headers_out.content_type for possible logging */ | |
| 954 | |
| 955 r->headers_out.content_type.len = b->last - p; | |
| 956 r->headers_out.content_type.data = p; | |
| 957 } | |
| 958 } | |
| 959 | |
| 960 if (r->headers_out.content_length_n == 0) { | |
| 961 /* content-length: 0 */ | |
| 962 *b->last = 0xc0; | |
| 963 b->last = (u_char *) ngx_http_v3_encode_prefix_int(b->last, 4, 6); | |
| 964 | |
| 965 } else if (r->headers_out.content_length_n > 0) { | |
| 966 /* content-length: 0 */ | |
| 967 *b->last = 0x70; | |
| 968 b->last = (u_char *) ngx_http_v3_encode_prefix_int(b->last, 4, 4); | |
| 969 p = b->last++; | |
| 970 b->last = ngx_sprintf(b->last, "%O", r->headers_out.content_length_n); | |
| 971 *p = b->last - p - 1; | |
| 972 } | |
| 973 | |
| 974 if (r->headers_out.last_modified == NULL | |
| 975 && r->headers_out.last_modified_time != -1) | |
| 976 { | |
| 977 /* last-modified */ | |
| 978 *b->last = 0x70; | |
| 979 b->last = (u_char *) ngx_http_v3_encode_prefix_int(b->last, 10, 4); | |
| 980 p = b->last++; | |
| 981 b->last = ngx_http_time(b->last, r->headers_out.last_modified_time); | |
| 982 *p = b->last - p - 1; | |
| 983 } | |
| 984 | |
| 985 #if (NGX_HTTP_GZIP) | |
| 986 if (r->gzip_vary) { | |
| 987 /* vary: accept-encoding */ | |
| 988 *b->last = 0xc0; | |
| 989 b->last = (u_char *) ngx_http_v3_encode_prefix_int(b->last, 59, 6); | |
| 990 } | |
| 991 #endif | |
| 992 | |
| 993 part = &r->headers_out.headers.part; | |
| 994 header = part->elts; | |
| 995 | |
| 996 for (i = 0; /* void */; i++) { | |
| 997 | |
| 998 if (i >= part->nelts) { | |
| 999 if (part->next == NULL) { | |
| 1000 break; | |
| 1001 } | |
| 1002 | |
| 1003 part = part->next; | |
| 1004 header = part->elts; | |
| 1005 i = 0; | |
| 1006 } | |
| 1007 | |
| 1008 if (header[i].hash == 0) { | |
| 1009 continue; | |
| 1010 } | |
| 1011 | |
| 1012 *b->last = 0x30; | |
| 1013 b->last = (u_char *) ngx_http_v3_encode_prefix_int(b->last, | |
| 1014 header[i].key.len, | |
| 1015 3); | |
| 1016 for (j = 0; j < header[i].key.len; j++) { | |
| 1017 *b->last++ = ngx_tolower(header[i].key.data[j]); | |
| 1018 } | |
| 1019 | |
| 1020 *b->last = 0; | |
| 1021 b->last = (u_char *) ngx_http_v3_encode_prefix_int(b->last, | |
| 1022 header[i].value.len, | |
| 1023 7); | |
| 1024 b->last = ngx_copy(b->last, header[i].value.data, header[i].value.len); | |
| 1025 } | |
| 1026 | |
| 1027 cl = ngx_alloc_chain_link(c->pool); | |
| 1028 if (cl == NULL) { | |
| 1029 return NULL; | |
| 1030 } | |
| 1031 | |
| 1032 cl->buf = b; | |
| 1033 cl->next = NULL; | |
| 1034 | |
| 1035 n = b->last - b->pos; | |
| 1036 | |
| 1037 len = 1 + ngx_http_v3_encode_varlen_int(NULL, n); | |
| 1038 | |
| 1039 b = ngx_create_temp_buf(c->pool, len); | |
| 1040 if (b == NULL) { | |
| 1041 return NULL; | |
| 1042 } | |
| 1043 | |
| 1044 *b->last++ = NGX_HTTP_V3_FRAME_HEADERS; | |
| 1045 b->last = (u_char *) ngx_http_v3_encode_varlen_int(b->last, n); | |
| 1046 | |
| 1047 hl = ngx_alloc_chain_link(c->pool); | |
| 1048 if (hl == NULL) { | |
| 1049 return NULL; | |
| 1050 } | |
| 1051 | |
| 1052 hl->buf = b; | |
| 1053 hl->next = cl; | |
| 1054 | |
| 1055 hlen = 1 + ngx_http_v3_encode_varlen_int(NULL, len); | |
| 1056 | |
| 1057 if (r->headers_out.content_length_n >= 0) { | |
| 1058 len = 1 + ngx_http_v3_encode_varlen_int(NULL, | |
| 1059 r->headers_out.content_length_n); | |
| 1060 | |
| 1061 b = ngx_create_temp_buf(c->pool, len); | |
| 1062 if (b == NULL) { | |
| 1063 NULL; | |
| 1064 } | |
| 1065 | |
| 1066 *b->last++ = NGX_HTTP_V3_FRAME_DATA; | |
| 1067 b->last = (u_char *) ngx_http_v3_encode_varlen_int(b->last, | |
| 1068 r->headers_out.content_length_n); | |
| 1069 | |
| 1070 bl = ngx_alloc_chain_link(c->pool); | |
| 1071 if (bl == NULL) { | |
| 1072 return NULL; | |
| 1073 } | |
| 1074 | |
| 1075 bl->buf = b; | |
| 1076 bl->next = NULL; | |
| 1077 cl->next = bl; | |
| 1078 } | |
| 1079 | |
| 1080 return hl; | |
| 1081 } |