Mercurial > hg > nginx
annotate src/http/modules/ngx_http_range_filter_module.c @ 2118:c1f589732d8c
split ngx_http_range_filter_module
author | Igor Sysoev <igor@sysoev.ru> |
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date | Wed, 23 Jul 2008 16:18:37 +0000 |
parents | 2a92804f4109 |
children | 0799703985ef |
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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5 |
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6 |
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7 #include <ngx_config.h> |
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8 #include <ngx_core.h> |
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9 #include <ngx_http.h> |
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10 |
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11 |
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12 /* |
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13 * the single part format: |
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14 * |
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15 * "HTTP/1.0 206 Partial Content" CRLF |
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16 * ... header ... |
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17 * "Content-Type: image/jpeg" CRLF |
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18 * "Content-Length: SIZE" CRLF |
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19 * "Content-Range: bytes START-END/SIZE" CRLF |
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20 * CRLF |
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21 * ... data ... |
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22 * |
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23 * |
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24 * the mutlipart format: |
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25 * |
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26 * "HTTP/1.0 206 Partial Content" CRLF |
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27 * ... header ... |
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28 * "Content-Type: multipart/byteranges; boundary=0123456789" CRLF |
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29 * CRLF |
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30 * CRLF |
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31 * "--0123456789" CRLF |
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32 * "Content-Type: image/jpeg" CRLF |
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33 * "Content-Range: bytes START0-END0/SIZE" CRLF |
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34 * CRLF |
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35 * ... data ... |
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36 * CRLF |
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37 * "--0123456789" CRLF |
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38 * "Content-Type: image/jpeg" CRLF |
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39 * "Content-Range: bytes START1-END1/SIZE" CRLF |
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40 * CRLF |
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41 * ... data ... |
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42 * CRLF |
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43 * "--0123456789--" CRLF |
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44 */ |
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45 |
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46 |
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47 typedef struct { |
963
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48 off_t start; |
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49 off_t end; |
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50 ngx_str_t content_range; |
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51 } ngx_http_range_t; |
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52 |
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53 |
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54 typedef struct { |
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55 off_t offset; |
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56 ngx_str_t boundary_header; |
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57 ngx_array_t ranges; |
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58 } ngx_http_range_filter_ctx_t; |
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59 |
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60 |
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61 ngx_int_t ngx_http_range_parse(ngx_http_request_t *r, |
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62 ngx_http_range_filter_ctx_t *ctx); |
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63 static ngx_int_t ngx_http_range_singlepart_header(ngx_http_request_t *r, |
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64 ngx_http_range_filter_ctx_t *ctx); |
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65 static ngx_int_t ngx_http_range_multipart_header(ngx_http_request_t *r, |
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66 ngx_http_range_filter_ctx_t *ctx); |
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67 static ngx_int_t ngx_http_range_test_overlapped(ngx_http_request_t *r, |
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68 ngx_http_range_filter_ctx_t *ctx, ngx_chain_t *in); |
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69 static ngx_int_t ngx_http_range_singlepart_body(ngx_http_request_t *r, |
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70 ngx_http_range_filter_ctx_t *ctx, ngx_chain_t *in); |
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71 static ngx_int_t ngx_http_range_multipart_body(ngx_http_request_t *r, |
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72 ngx_http_range_filter_ctx_t *ctx, ngx_chain_t *in); |
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73 static ngx_int_t ngx_http_range_not_satisfiable(ngx_http_request_t *r); |
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74 |
681 | 75 static ngx_int_t ngx_http_range_header_filter_init(ngx_conf_t *cf); |
76 static ngx_int_t ngx_http_range_body_filter_init(ngx_conf_t *cf); | |
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77 |
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78 |
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79 static ngx_http_module_t ngx_http_range_header_filter_module_ctx = { |
509 | 80 NULL, /* preconfiguration */ |
681 | 81 ngx_http_range_header_filter_init, /* postconfiguration */ |
177
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82 |
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83 NULL, /* create main configuration */ |
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84 NULL, /* init main configuration */ |
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85 |
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86 NULL, /* create server configuration */ |
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87 NULL, /* merge server configuration */ |
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88 |
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89 NULL, /* create location configuration */ |
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90 NULL, /* merge location configuration */ |
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91 }; |
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92 |
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93 |
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94 ngx_module_t ngx_http_range_header_filter_module = { |
509 | 95 NGX_MODULE_V1, |
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96 &ngx_http_range_header_filter_module_ctx, /* module context */ |
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97 NULL, /* module directives */ |
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98 NGX_HTTP_MODULE, /* module type */ |
541 | 99 NULL, /* init master */ |
681 | 100 NULL, /* init module */ |
541 | 101 NULL, /* init process */ |
102 NULL, /* init thread */ | |
103 NULL, /* exit thread */ | |
104 NULL, /* exit process */ | |
105 NULL, /* exit master */ | |
106 NGX_MODULE_V1_PADDING | |
334
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107 }; |
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108 |
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109 |
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110 static ngx_http_module_t ngx_http_range_body_filter_module_ctx = { |
509 | 111 NULL, /* preconfiguration */ |
681 | 112 ngx_http_range_body_filter_init, /* postconfiguration */ |
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113 |
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114 NULL, /* create main configuration */ |
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115 NULL, /* init main configuration */ |
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116 |
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117 NULL, /* create server configuration */ |
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118 NULL, /* merge server configuration */ |
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119 |
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120 NULL, /* create location configuration */ |
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121 NULL, /* merge location configuration */ |
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122 }; |
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123 |
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124 |
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125 ngx_module_t ngx_http_range_body_filter_module = { |
509 | 126 NGX_MODULE_V1, |
334
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127 &ngx_http_range_body_filter_module_ctx, /* module context */ |
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128 NULL, /* module directives */ |
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129 NGX_HTTP_MODULE, /* module type */ |
541 | 130 NULL, /* init master */ |
681 | 131 NULL, /* init module */ |
541 | 132 NULL, /* init process */ |
133 NULL, /* init thread */ | |
134 NULL, /* exit thread */ | |
135 NULL, /* exit process */ | |
136 NULL, /* exit master */ | |
137 NGX_MODULE_V1_PADDING | |
99
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138 }; |
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139 |
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140 |
155
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153
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141 static ngx_http_output_header_filter_pt ngx_http_next_header_filter; |
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142 static ngx_http_output_body_filter_pt ngx_http_next_body_filter; |
99
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143 |
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144 |
493 | 145 static ngx_int_t |
146 ngx_http_range_header_filter(ngx_http_request_t *r) | |
99
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147 { |
1630 | 148 time_t if_range; |
461 | 149 ngx_int_t rc; |
99
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150 ngx_http_range_filter_ctx_t *ctx; |
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151 |
160
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155
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152 if (r->http_version < NGX_HTTP_VERSION_10 |
99
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153 || r->headers_out.status != NGX_HTTP_OK |
597 | 154 || r != r->main |
153
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155 || r->headers_out.content_length_n == -1 |
581 | 156 || !r->allow_ranges) |
117
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113
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157 { |
155
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158 return ngx_http_next_header_filter(r); |
117
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159 } |
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160 |
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161 if (r->headers_in.range == NULL |
99
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162 || r->headers_in.range->value.len < 7 |
1107
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163 || ngx_strncasecmp(r->headers_in.range->value.data, |
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164 (u_char *) "bytes=", 6) |
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165 != 0) |
99
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|
166 { |
1630 | 167 goto next_filter; |
168 } | |
169 | |
170 if (r->headers_in.if_range && r->headers_out.last_modified_time != -1) { | |
171 | |
172 if_range = ngx_http_parse_time(r->headers_in.if_range->value.data, | |
173 r->headers_in.if_range->value.len); | |
117
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|
174 |
1630 | 175 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
176 "http ir:%d lm:%d", | |
177 if_range, r->headers_out.last_modified_time); | |
117
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178 |
1630 | 179 if (if_range != r->headers_out.last_modified_time) { |
180 goto next_filter; | |
181 } | |
99
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182 } |
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183 |
963
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184 ctx = ngx_pcalloc(r->pool, sizeof(ngx_http_range_filter_ctx_t)); |
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185 if (ctx == NULL) { |
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186 return NGX_ERROR; |
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187 } |
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188 |
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189 if (ngx_array_init(&ctx->ranges, r->pool, 1, sizeof(ngx_http_range_t)) |
959 | 190 == NGX_ERROR) |
461 | 191 { |
192 return NGX_ERROR; | |
193 } | |
99
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194 |
2118
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195 rc = ngx_http_range_parse(r, ctx); |
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196 |
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197 if (rc == NGX_OK) { |
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198 |
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199 ngx_http_set_ctx(r, ctx, ngx_http_range_body_filter_module); |
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200 |
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201 r->headers_out.status = NGX_HTTP_PARTIAL_CONTENT; |
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202 |
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203 if (ctx->ranges.nelts == 1) { |
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204 return ngx_http_range_singlepart_header(r, ctx); |
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205 } |
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|
206 |
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207 return ngx_http_range_multipart_header(r, ctx); |
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208 } |
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209 |
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210 if (rc == NGX_HTTP_RANGE_NOT_SATISFIABLE) { |
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211 return ngx_http_range_not_satisfiable(r); |
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212 } |
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213 |
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214 /* rc == NGX_ERROR */ |
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215 |
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216 return rc; |
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217 |
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218 next_filter: |
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219 |
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220 r->headers_out.accept_ranges = ngx_list_push(&r->headers_out.headers); |
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221 if (r->headers_out.accept_ranges == NULL) { |
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222 return NGX_ERROR; |
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223 } |
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|
224 |
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225 r->headers_out.accept_ranges->hash = 1; |
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226 r->headers_out.accept_ranges->key.len = sizeof("Accept-Ranges") - 1; |
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227 r->headers_out.accept_ranges->key.data = (u_char *) "Accept-Ranges"; |
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228 r->headers_out.accept_ranges->value.len = sizeof("bytes") - 1; |
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229 r->headers_out.accept_ranges->value.data = (u_char *) "bytes"; |
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230 |
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231 return ngx_http_next_header_filter(r); |
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232 } |
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233 |
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234 |
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235 ngx_int_t |
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236 ngx_http_range_parse(ngx_http_request_t *r, ngx_http_range_filter_ctx_t *ctx) |
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237 { |
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238 u_char *p; |
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239 off_t start, end; |
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240 ngx_uint_t suffix; |
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241 ngx_http_range_t *range; |
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242 |
99
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|
243 p = r->headers_in.range->value.data + 6; |
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|
244 |
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|
245 for ( ;; ) { |
231
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195
diff
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|
246 start = 0; |
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195
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247 end = 0; |
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|
248 suffix = 0; |
99
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|
249 |
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|
250 while (*p == ' ') { p++; } |
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|
251 |
231
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252 if (*p != '-') { |
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253 if (*p < '0' || *p > '9') { |
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254 return NGX_HTTP_RANGE_NOT_SATISFIABLE; |
231
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parents:
195
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255 } |
99
a059e1aa65d4
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parents:
diff
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|
256 |
231
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195
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257 while (*p >= '0' && *p <= '9') { |
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258 start = start * 10 + *p++ - '0'; |
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259 } |
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260 |
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261 while (*p == ' ') { p++; } |
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262 |
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263 if (*p++ != '-') { |
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264 return NGX_HTTP_RANGE_NOT_SATISFIABLE; |
231
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265 } |
99
a059e1aa65d4
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parents:
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266 |
231
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267 if (start >= r->headers_out.content_length_n) { |
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268 return NGX_HTTP_RANGE_NOT_SATISFIABLE; |
231
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269 } |
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270 |
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271 while (*p == ' ') { p++; } |
99
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272 |
231
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273 if (*p == ',' || *p == '\0') { |
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274 range = ngx_array_push(&ctx->ranges); |
501 | 275 if (range == NULL) { |
461 | 276 return NGX_ERROR; |
277 } | |
278 | |
231
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279 range->start = start; |
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280 range->end = r->headers_out.content_length_n; |
99
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281 |
231
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282 if (*p++ != ',') { |
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283 return NGX_OK; |
231
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284 } |
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285 |
99
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286 continue; |
a059e1aa65d4
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287 } |
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288 |
231
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289 } else { |
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290 suffix = 1; |
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291 p++; |
99
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292 } |
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293 |
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294 if (*p < '0' || *p > '9') { |
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295 return NGX_HTTP_RANGE_NOT_SATISFIABLE; |
99
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|
296 } |
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parents:
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|
297 |
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298 while (*p >= '0' && *p <= '9') { |
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299 end = end * 10 + *p++ - '0'; |
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300 } |
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parents:
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|
301 |
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parents:
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302 while (*p == ' ') { p++; } |
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parents:
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|
303 |
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304 if (*p != ',' && *p != '\0') { |
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305 return NGX_HTTP_RANGE_NOT_SATISFIABLE; |
99
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parents:
diff
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|
306 } |
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parents:
diff
changeset
|
307 |
231
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195
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308 if (suffix) { |
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309 start = r->headers_out.content_length_n - end; |
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310 end = r->headers_out.content_length_n - 1; |
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195
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|
311 } |
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195
diff
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|
312 |
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313 if (start > end) { |
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314 return NGX_HTTP_RANGE_NOT_SATISFIABLE; |
99
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Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
315 } |
a059e1aa65d4
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parents:
diff
changeset
|
316 |
963
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diff
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|
317 range = ngx_array_push(&ctx->ranges); |
501 | 318 if (range == NULL) { |
461 | 319 return NGX_ERROR; |
320 } | |
321 | |
99
a059e1aa65d4
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parents:
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|
322 range->start = start; |
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parents:
diff
changeset
|
323 |
231
92db0aa1e83f
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parents:
195
diff
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|
324 if (end >= r->headers_out.content_length_n) { |
92db0aa1e83f
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195
diff
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|
325 /* |
92db0aa1e83f
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diff
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|
326 * Download Accelerator sends the last byte position |
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327 * that equals to the file length |
92db0aa1e83f
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195
diff
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|
328 */ |
92db0aa1e83f
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195
diff
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|
329 range->end = r->headers_out.content_length_n; |
92db0aa1e83f
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parents:
195
diff
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|
330 |
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195
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|
331 } else { |
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parents:
195
diff
changeset
|
332 range->end = end + 1; |
99
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
333 } |
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
334 |
231
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nginx-0.0.1-2004-01-16-21:29:15 import
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parents:
195
diff
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|
335 if (*p++ != ',') { |
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|
336 return NGX_OK; |
231
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nginx-0.0.1-2004-01-16-21:29:15 import
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parents:
195
diff
changeset
|
337 } |
99
a059e1aa65d4
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parents:
diff
changeset
|
338 } |
2118
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|
339 } |
c1f589732d8c
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parents:
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diff
changeset
|
340 |
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diff
changeset
|
341 |
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changeset
|
342 static ngx_int_t |
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343 ngx_http_range_singlepart_header(ngx_http_request_t *r, |
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|
344 ngx_http_range_filter_ctx_t *ctx) |
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|
345 { |
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|
346 ngx_table_elt_t *content_range; |
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|
347 ngx_http_range_t *range; |
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|
348 |
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|
349 content_range = ngx_list_push(&r->headers_out.headers); |
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|
350 if (content_range == NULL) { |
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|
351 return NGX_ERROR; |
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|
352 } |
99
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parents:
diff
changeset
|
353 |
2118
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|
354 r->headers_out.content_range = content_range; |
461 | 355 |
2118
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|
356 content_range->hash = 1; |
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changeset
|
357 content_range->key.len = sizeof("Content-Range") - 1; |
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|
358 content_range->key.data = (u_char *) "Content-Range"; |
99
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parents:
diff
changeset
|
359 |
2118
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changeset
|
360 content_range->value.data = ngx_pnalloc(r->pool, |
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diff
changeset
|
361 sizeof("bytes -/") - 1 + 3 * NGX_OFF_T_LEN); |
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parents:
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diff
changeset
|
362 if (content_range->value.data == NULL) { |
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split ngx_http_range_filter_module
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parents:
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diff
changeset
|
363 return NGX_ERROR; |
461 | 364 } |
365 | |
2118
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|
366 /* "Content-Range: bytes SSSS-EEEE/TTTT" header */ |
461 | 367 |
2118
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changeset
|
368 range = ctx->ranges.elts; |
461 | 369 |
2118
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changeset
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370 content_range->value.len = ngx_sprintf(content_range->value.data, |
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371 "bytes %O-%O/%O", |
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372 range->start, range->end - 1, |
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373 r->headers_out.content_length_n) |
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374 - content_range->value.data; |
461 | 375 |
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376 r->headers_out.content_length_n = range->end - range->start; |
461 | 377 |
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378 if (r->headers_out.content_length) { |
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379 r->headers_out.content_length->hash = 0; |
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380 r->headers_out.content_length = NULL; |
461 | 381 } |
382 | |
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383 return ngx_http_next_header_filter(r); |
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384 } |
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385 |
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386 |
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387 static ngx_int_t |
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388 ngx_http_range_multipart_header(ngx_http_request_t *r, |
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389 ngx_http_range_filter_ctx_t *ctx) |
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390 { |
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391 size_t len; |
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392 ngx_uint_t i; |
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393 ngx_http_range_t *range; |
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394 ngx_atomic_uint_t boundary; |
461 | 395 |
396 /* TODO: what if no content_type ?? */ | |
397 | |
493 | 398 len = sizeof(CRLF "--") - 1 + NGX_ATOMIC_T_LEN |
399 + sizeof(CRLF "Content-Type: ") - 1 | |
509 | 400 + r->headers_out.content_type.len |
461 | 401 + sizeof(CRLF "Content-Range: bytes ") - 1; |
402 | |
403 if (r->headers_out.charset.len) { | |
404 len += sizeof("; charset=") - 1 + r->headers_out.charset.len; | |
405 } | |
406 | |
2049 | 407 ctx->boundary_header.data = ngx_pnalloc(r->pool, len); |
501 | 408 if (ctx->boundary_header.data == NULL) { |
461 | 409 return NGX_ERROR; |
410 } | |
411 | |
493 | 412 boundary = ngx_next_temp_number(0); |
461 | 413 |
414 /* | |
415 * The boundary header of the range: | |
416 * CRLF | |
417 * "--0123456789" CRLF | |
418 * "Content-Type: image/jpeg" CRLF | |
419 * "Content-Range: bytes " | |
420 */ | |
421 | |
422 if (r->headers_out.charset.len) { | |
423 ctx->boundary_header.len = ngx_sprintf(ctx->boundary_header.data, | |
493 | 424 CRLF "--%0muA" CRLF |
461 | 425 "Content-Type: %V; charset=%V" CRLF |
426 "Content-Range: bytes ", | |
427 boundary, | |
509 | 428 &r->headers_out.content_type, |
461 | 429 &r->headers_out.charset) |
430 - ctx->boundary_header.data; | |
431 | |
432 r->headers_out.charset.len = 0; | |
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433 |
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434 } else { |
461 | 435 ctx->boundary_header.len = ngx_sprintf(ctx->boundary_header.data, |
493 | 436 CRLF "--%0muA" CRLF |
461 | 437 "Content-Type: %V" CRLF |
438 "Content-Range: bytes ", | |
439 boundary, | |
509 | 440 &r->headers_out.content_type) |
461 | 441 - ctx->boundary_header.data; |
442 } | |
99
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443 |
509 | 444 r->headers_out.content_type.data = |
2049 | 445 ngx_pnalloc(r->pool, |
446 sizeof("Content-Type: multipart/byteranges; boundary=") - 1 | |
447 + NGX_ATOMIC_T_LEN); | |
165
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448 |
509 | 449 if (r->headers_out.content_type.data == NULL) { |
461 | 450 return NGX_ERROR; |
451 } | |
99
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452 |
461 | 453 /* "Content-Type: multipart/byteranges; boundary=0123456789" */ |
99
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454 |
509 | 455 r->headers_out.content_type.len = |
456 ngx_sprintf(r->headers_out.content_type.data, | |
493 | 457 "multipart/byteranges; boundary=%0muA", |
461 | 458 boundary) |
509 | 459 - r->headers_out.content_type.data; |
160
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460 |
493 | 461 |
461 | 462 /* the size of the last boundary CRLF "--0123456789--" CRLF */ |
493 | 463 |
464 len = sizeof(CRLF "--") - 1 + NGX_ATOMIC_T_LEN + sizeof("--" CRLF) - 1; | |
99
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465 |
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466 range = ctx->ranges.elts; |
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467 for (i = 0; i < ctx->ranges.nelts; i++) { |
455 | 468 |
461 | 469 /* the size of the range: "SSSS-EEEE/TTTT" CRLF CRLF */ |
455 | 470 |
461 | 471 range[i].content_range.data = |
2049 | 472 ngx_pnalloc(r->pool, 3 * NGX_OFF_T_LEN + 2 + 4); |
99
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473 |
461 | 474 if (range[i].content_range.data == NULL) { |
475 return NGX_ERROR; | |
476 } | |
99
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477 |
461 | 478 range[i].content_range.len = ngx_sprintf(range[i].content_range.data, |
479 "%O-%O/%O" CRLF CRLF, | |
480 range[i].start, range[i].end - 1, | |
481 r->headers_out.content_length_n) | |
482 - range[i].content_range.data; | |
160
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483 |
461 | 484 len += ctx->boundary_header.len + range[i].content_range.len |
485 + (size_t) (range[i].end - range[i].start); | |
486 } | |
99
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487 |
461 | 488 r->headers_out.content_length_n = len; |
960 | 489 |
490 if (r->headers_out.content_length) { | |
491 r->headers_out.content_length->hash = 0; | |
492 r->headers_out.content_length = NULL; | |
493 } | |
99
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494 |
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495 return ngx_http_next_header_filter(r); |
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496 } |
1630 | 497 |
498 | |
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499 static ngx_int_t |
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500 ngx_http_range_not_satisfiable(ngx_http_request_t *r) |
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501 { |
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502 ngx_table_elt_t *content_range; |
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503 |
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504 r->headers_out.status = NGX_HTTP_RANGE_NOT_SATISFIABLE; |
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505 |
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506 content_range = ngx_list_push(&r->headers_out.headers); |
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507 if (content_range == NULL) { |
1630 | 508 return NGX_ERROR; |
509 } | |
510 | |
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511 r->headers_out.content_range = content_range; |
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512 |
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513 content_range->hash = 1; |
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514 content_range->key.len = sizeof("Content-Range") - 1; |
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515 content_range->key.data = (u_char *) "Content-Range"; |
1630 | 516 |
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517 content_range->value.data = ngx_pnalloc(r->pool, |
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518 sizeof("bytes */") - 1 + NGX_OFF_T_LEN); |
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519 if (content_range->value.data == NULL) { |
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520 return NGX_ERROR; |
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521 } |
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522 |
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523 content_range->value.len = ngx_sprintf(content_range->value.data, |
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524 "bytes */%O", |
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525 r->headers_out.content_length_n) |
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526 - content_range->value.data; |
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527 |
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528 ngx_http_clear_content_length(r); |
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529 |
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530 return NGX_HTTP_RANGE_NOT_SATISFIABLE; |
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531 } |
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532 |
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533 |
493 | 534 static ngx_int_t |
535 ngx_http_range_body_filter(ngx_http_request_t *r, ngx_chain_t *in) | |
99
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536 { |
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537 ngx_http_range_filter_ctx_t *ctx; |
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538 |
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539 if (in == NULL) { |
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540 return ngx_http_next_body_filter(r, in); |
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541 } |
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542 |
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543 ctx = ngx_http_get_module_ctx(r, ngx_http_range_body_filter_module); |
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544 |
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545 if (ctx == NULL) { |
155
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546 return ngx_http_next_body_filter(r, in); |
99
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547 } |
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548 |
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549 if (ngx_buf_special(in->buf)) { |
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550 return ngx_http_next_body_filter(r, in); |
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551 } |
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552 |
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553 if (ngx_http_range_test_overlapped(r, ctx, in) != NGX_OK) { |
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554 return NGX_ERROR; |
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555 } |
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556 |
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557 if (ctx->ranges.nelts == 1) { |
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558 |
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559 /* |
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560 * the optimized version for the responses |
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561 * that are passed in the single buffer |
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562 */ |
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563 |
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564 return ngx_http_range_singlepart_body(r, ctx, in); |
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565 } |
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566 |
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567 return ngx_http_range_multipart_body(r, ctx, in); |
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568 } |
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569 |
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570 |
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571 static ngx_int_t |
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572 ngx_http_range_test_overlapped(ngx_http_request_t *r, |
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573 ngx_http_range_filter_ctx_t *ctx, ngx_chain_t *in) |
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574 { |
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575 off_t start, last; |
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576 ngx_buf_t *buf; |
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577 ngx_uint_t i; |
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578 ngx_http_range_t *range; |
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579 |
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580 if (ctx->offset) { |
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581 goto overlapped; |
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582 } |
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583 |
2118
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584 buf = in->buf; |
960 | 585 |
586 if (!buf->last_buf) { | |
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587 |
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588 if (buf->in_file) { |
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589 start = buf->file_pos + ctx->offset; |
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590 last = buf->file_last + ctx->offset; |
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591 |
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592 } else { |
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593 start = buf->pos - buf->start + ctx->offset; |
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594 last = buf->last - buf->start + ctx->offset; |
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595 } |
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596 |
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597 range = ctx->ranges.elts; |
963
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598 for (i = 0; i < ctx->ranges.nelts; i++) { |
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599 if (start > range[i].start || last < range[i].end) { |
960 | 600 goto overlapped; |
601 } | |
602 } | |
603 } | |
604 | |
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605 ctx->offset = ngx_buf_size(buf); |
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606 |
2118
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607 return NGX_OK; |
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608 |
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609 overlapped: |
960 | 610 |
2118
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611 ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0, |
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612 "range in overlapped buffers"); |
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613 |
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614 return NGX_ERROR; |
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615 } |
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616 |
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617 |
2118
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618 static ngx_int_t |
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619 ngx_http_range_singlepart_body(ngx_http_request_t *r, |
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620 ngx_http_range_filter_ctx_t *ctx, ngx_chain_t *in) |
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621 { |
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622 ngx_buf_t *buf; |
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623 ngx_http_range_t *range; |
960 | 624 |
2118
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625 buf = in->buf; |
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626 range = ctx->ranges.elts; |
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627 |
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628 if (buf->in_file) { |
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629 buf->file_pos = range->start; |
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630 buf->file_last = range->end; |
960 | 631 } |
632 | |
2118
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633 if (ngx_buf_in_memory(buf)) { |
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634 buf->pos = buf->start + (size_t) range->start; |
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635 buf->last = buf->start + (size_t) range->end; |
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636 } |
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637 |
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638 return ngx_http_next_body_filter(r, in); |
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639 } |
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640 |
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641 |
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642 static ngx_int_t |
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643 ngx_http_range_multipart_body(ngx_http_request_t *r, |
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644 ngx_http_range_filter_ctx_t *ctx, ngx_chain_t *in) |
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645 { |
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646 ngx_buf_t *b, *buf; |
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647 ngx_uint_t i; |
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648 ngx_chain_t *out, *hcl, *rcl, *dcl, **ll; |
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649 ngx_http_range_t *range; |
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650 |
960 | 651 ll = &out; |
2118
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652 buf = in->buf; |
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653 range = ctx->ranges.elts; |
160
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654 |
963
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655 for (i = 0; i < ctx->ranges.nelts; i++) { |
99
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656 |
960 | 657 /* |
658 * The boundary header of the range: | |
659 * CRLF | |
660 * "--0123456789" CRLF | |
661 * "Content-Type: image/jpeg" CRLF | |
662 * "Content-Range: bytes " | |
663 */ | |
664 | |
665 b = ngx_calloc_buf(r->pool); | |
666 if (b == NULL) { | |
667 return NGX_ERROR; | |
99
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668 } |
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669 |
960 | 670 b->memory = 1; |
671 b->pos = ctx->boundary_header.data; | |
672 b->last = ctx->boundary_header.data + ctx->boundary_header.len; | |
160
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673 |
960 | 674 hcl = ngx_alloc_chain_link(r->pool); |
675 if (hcl == NULL) { | |
676 return NGX_ERROR; | |
677 } | |
461 | 678 |
960 | 679 hcl->buf = b; |
99
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680 |
461 | 681 |
960 | 682 /* "SSSS-EEEE/TTTT" CRLF CRLF */ |
160
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683 |
501 | 684 b = ngx_calloc_buf(r->pool); |
685 if (b == NULL) { | |
461 | 686 return NGX_ERROR; |
687 } | |
688 | |
343
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689 b->temporary = 1; |
960 | 690 b->pos = range[i].content_range.data; |
691 b->last = range[i].content_range.data + range[i].content_range.len; | |
692 | |
693 rcl = ngx_alloc_chain_link(r->pool); | |
694 if (rcl == NULL) { | |
695 return NGX_ERROR; | |
696 } | |
697 | |
698 rcl->buf = b; | |
699 | |
700 | |
701 /* the range data */ | |
461 | 702 |
960 | 703 b = ngx_calloc_buf(r->pool); |
704 if (b == NULL) { | |
705 return NGX_ERROR; | |
706 } | |
707 | |
962
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708 b->in_file = buf->in_file; |
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709 b->temporary = buf->temporary; |
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710 b->memory = buf->memory; |
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711 b->mmap = buf->mmap; |
960 | 712 b->file = buf->file; |
713 | |
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714 if (buf->in_file) { |
1093 | 715 b->file_pos = range[i].start; |
716 b->file_last = range[i].end; | |
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717 } |
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718 |
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719 if (ngx_buf_in_memory(buf)) { |
1093 | 720 b->pos = buf->start + (size_t) range[i].start; |
721 b->last = buf->start + (size_t) range[i].end; | |
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722 } |
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723 |
960 | 724 dcl = ngx_alloc_chain_link(r->pool); |
725 if (dcl == NULL) { | |
461 | 726 return NGX_ERROR; |
727 } | |
728 | |
960 | 729 dcl->buf = b; |
461 | 730 |
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731 *ll = hcl; |
960 | 732 hcl->next = rcl; |
733 rcl->next = dcl; | |
734 ll = &dcl->next; | |
735 } | |
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736 |
960 | 737 /* the last boundary CRLF "--0123456789--" CRLF */ |
738 | |
739 b = ngx_calloc_buf(r->pool); | |
740 if (b == NULL) { | |
741 return NGX_ERROR; | |
742 } | |
743 | |
744 b->temporary = 1; | |
745 b->last_buf = 1; | |
746 | |
2049 | 747 b->pos = ngx_pnalloc(r->pool, sizeof(CRLF "--") - 1 + NGX_ATOMIC_T_LEN |
748 + sizeof("--" CRLF) - 1); | |
960 | 749 if (b->pos == NULL) { |
750 return NGX_ERROR; | |
99
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
751 } |
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
752 |
1195
4ba6df5d5b53
fix multipart ranges trailing
Igor Sysoev <igor@sysoev.ru>
parents:
1107
diff
changeset
|
753 b->last = ngx_cpymem(b->pos, ctx->boundary_header.data, |
4ba6df5d5b53
fix multipart ranges trailing
Igor Sysoev <igor@sysoev.ru>
parents:
1107
diff
changeset
|
754 sizeof(CRLF "--") - 1 + NGX_ATOMIC_T_LEN); |
960 | 755 *b->last++ = '-'; *b->last++ = '-'; |
756 *b->last++ = CR; *b->last++ = LF; | |
757 | |
758 hcl = ngx_alloc_chain_link(r->pool); | |
759 if (hcl == NULL) { | |
760 return NGX_ERROR; | |
761 } | |
762 | |
763 hcl->buf = b; | |
764 hcl->next = NULL; | |
99
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
765 |
960 | 766 *ll = hcl; |
767 | |
768 return ngx_http_next_body_filter(r, out); | |
99
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
769 } |
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
770 |
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
771 |
493 | 772 static ngx_int_t |
681 | 773 ngx_http_range_header_filter_init(ngx_conf_t *cf) |
99
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
774 { |
155
46eb23d9471d
nginx-0.0.1-2003-10-22-20:38:26 import
Igor Sysoev <igor@sysoev.ru>
parents:
153
diff
changeset
|
775 ngx_http_next_header_filter = ngx_http_top_header_filter; |
99
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
776 ngx_http_top_header_filter = ngx_http_range_header_filter; |
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
777 |
334
af451db3fe99
nginx-0.0.3-2004-05-12-09:37:55 import
Igor Sysoev <igor@sysoev.ru>
parents:
314
diff
changeset
|
778 return NGX_OK; |
af451db3fe99
nginx-0.0.3-2004-05-12-09:37:55 import
Igor Sysoev <igor@sysoev.ru>
parents:
314
diff
changeset
|
779 } |
af451db3fe99
nginx-0.0.3-2004-05-12-09:37:55 import
Igor Sysoev <igor@sysoev.ru>
parents:
314
diff
changeset
|
780 |
af451db3fe99
nginx-0.0.3-2004-05-12-09:37:55 import
Igor Sysoev <igor@sysoev.ru>
parents:
314
diff
changeset
|
781 |
493 | 782 static ngx_int_t |
681 | 783 ngx_http_range_body_filter_init(ngx_conf_t *cf) |
334
af451db3fe99
nginx-0.0.3-2004-05-12-09:37:55 import
Igor Sysoev <igor@sysoev.ru>
parents:
314
diff
changeset
|
784 { |
155
46eb23d9471d
nginx-0.0.1-2003-10-22-20:38:26 import
Igor Sysoev <igor@sysoev.ru>
parents:
153
diff
changeset
|
785 ngx_http_next_body_filter = ngx_http_top_body_filter; |
99
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
786 ngx_http_top_body_filter = ngx_http_range_body_filter; |
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
787 |
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
788 return NGX_OK; |
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
789 } |