Mercurial > hg > nginx
annotate src/http/modules/ngx_http_range_filter_module.c @ 4057:3205a6d6c6ec
Ranges processing small optimization.
author | Igor Sysoev <igor@sysoev.ru> |
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date | Tue, 30 Aug 2011 13:06:12 +0000 |
parents | e9213133993a |
children | d32a2000b766 |
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 |
441
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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 { |
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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_not_satisfiable(ngx_http_request_t *r); |
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68 static ngx_int_t ngx_http_range_test_overlapped(ngx_http_request_t *r, |
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69 ngx_http_range_filter_ctx_t *ctx, ngx_chain_t *in); |
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70 static ngx_int_t ngx_http_range_singlepart_body(ngx_http_request_t *r, |
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71 ngx_http_range_filter_ctx_t *ctx, ngx_chain_t *in); |
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72 static ngx_int_t ngx_http_range_multipart_body(ngx_http_request_t *r, |
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73 ngx_http_range_filter_ctx_t *ctx, ngx_chain_t *in); |
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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 */ |
99
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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 */ |
af451db3fe99
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314
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118 NULL, /* merge server configuration */ |
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314
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119 |
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314
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120 NULL, /* create location configuration */ |
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314
diff
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|
121 NULL, /* merge location configuration */ |
af451db3fe99
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122 }; |
af451db3fe99
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314
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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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nginx-0.0.1-2003-10-22-20:38:26 import
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153
diff
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|
141 static ngx_http_output_header_filter_pt ngx_http_next_header_filter; |
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153
diff
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142 static ngx_http_output_body_filter_pt ngx_http_next_body_filter; |
99
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parents:
diff
changeset
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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; |
99
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149 ngx_http_range_filter_ctx_t *ctx; |
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150 |
160
e7e094d34162
nginx-0.0.1-2003-10-27-11:53:49 import
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155
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151 if (r->http_version < NGX_HTTP_VERSION_10 |
99
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152 || r->headers_out.status != NGX_HTTP_OK |
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153 || r != r->main |
153
c71aeb75c071
nginx-0.0.1-2003-10-21-20:49:56 import
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154 || r->headers_out.content_length_n == -1 |
581 | 155 || !r->allow_ranges) |
117
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113
diff
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|
156 { |
155
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157 return ngx_http_next_header_filter(r); |
117
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113
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158 } |
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|
159 |
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|
160 if (r->headers_in.range == NULL |
99
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nginx-0.0.1-2003-06-02-19:24:30 import
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|
161 || r->headers_in.range->value.len < 7 |
1107
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ngx_strcasecmp()/ngx_strncasecmp()
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162 || ngx_strncasecmp(r->headers_in.range->value.data, |
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|
163 (u_char *) "bytes=", 6) |
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|
164 != 0) |
99
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|
165 { |
1630 | 166 goto next_filter; |
167 } | |
168 | |
169 if (r->headers_in.if_range && r->headers_out.last_modified_time != -1) { | |
170 | |
171 if_range = ngx_http_parse_time(r->headers_in.if_range->value.data, | |
172 r->headers_in.if_range->value.len); | |
117
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|
173 |
1630 | 174 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
175 "http ir:%d lm:%d", | |
176 if_range, r->headers_out.last_modified_time); | |
117
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diff
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|
177 |
1630 | 178 if (if_range != r->headers_out.last_modified_time) { |
179 goto next_filter; | |
180 } | |
99
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181 } |
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|
182 |
963
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|
183 ctx = ngx_pcalloc(r->pool, sizeof(ngx_http_range_filter_ctx_t)); |
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184 if (ctx == NULL) { |
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185 return NGX_ERROR; |
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186 } |
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187 |
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|
188 if (ngx_array_init(&ctx->ranges, r->pool, 1, sizeof(ngx_http_range_t)) |
2536
a6d6d762c554
small optimization: " == NGX_ERROR" > " != NGX_OK"
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2269
diff
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|
189 != NGX_OK) |
461 | 190 { |
191 return NGX_ERROR; | |
192 } | |
99
a059e1aa65d4
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193 |
4035
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Now if total size of all ranges is greater than source response size,
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diff
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|
194 switch (ngx_http_range_parse(r, ctx)) { |
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195 |
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Now if total size of all ranges is greater than source response size,
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|
196 case NGX_OK: |
2118
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197 ngx_http_set_ctx(r, ctx, ngx_http_range_body_filter_module); |
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198 |
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199 r->headers_out.status = NGX_HTTP_PARTIAL_CONTENT; |
2592
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a prelimiary proxy cache support
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diff
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|
200 r->headers_out.status_line.len = 0; |
2118
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201 |
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|
202 if (ctx->ranges.nelts == 1) { |
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203 return ngx_http_range_singlepart_header(r, ctx); |
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|
204 } |
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|
205 |
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|
206 return ngx_http_range_multipart_header(r, ctx); |
4035
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Now if total size of all ranges is greater than source response size,
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|
207 |
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Now if total size of all ranges is greater than source response size,
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|
208 case NGX_HTTP_RANGE_NOT_SATISFIABLE: |
c2a91088b0c0
Now if total size of all ranges is greater than source response size,
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|
209 return ngx_http_range_not_satisfiable(r); |
2118
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210 |
4035
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Now if total size of all ranges is greater than source response size,
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|
211 case NGX_ERROR: |
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|
212 return NGX_ERROR; |
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Now if total size of all ranges is greater than source response size,
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|
213 |
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Now if total size of all ranges is greater than source response size,
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changeset
|
214 default: /* NGX_DECLINED */ |
c2a91088b0c0
Now if total size of all ranges is greater than source response size,
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|
215 break; |
2118
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|
216 } |
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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; |
3516
dd1570b6f237
ngx_str_set() and ngx_str_null()
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3331
diff
changeset
|
226 ngx_str_set(&r->headers_out.accept_ranges->key, "Accept-Ranges"); |
dd1570b6f237
ngx_str_set() and ngx_str_null()
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diff
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|
227 ngx_str_set(&r->headers_out.accept_ranges->value, "bytes"); |
2118
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|
228 |
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229 return ngx_http_next_header_filter(r); |
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|
230 } |
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|
231 |
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diff
changeset
|
232 |
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|
233 ngx_int_t |
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|
234 ngx_http_range_parse(ngx_http_request_t *r, ngx_http_range_filter_ctx_t *ctx) |
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|
235 { |
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changeset
|
236 u_char *p; |
4057
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Ranges processing small optimization.
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diff
changeset
|
237 off_t start, end, size, content_length; |
2118
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|
238 ngx_uint_t suffix; |
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|
239 ngx_http_range_t *range; |
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|
240 |
99
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changeset
|
241 p = r->headers_in.range->value.data + 6; |
4035
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Now if total size of all ranges is greater than source response size,
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changeset
|
242 size = 0; |
4057
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diff
changeset
|
243 content_length = r->headers_out.content_length_n; |
99
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
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parents:
diff
changeset
|
244 |
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
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changeset
|
245 for ( ;; ) { |
231
92db0aa1e83f
nginx-0.0.1-2004-01-16-21:29:15 import
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parents:
195
diff
changeset
|
246 start = 0; |
92db0aa1e83f
nginx-0.0.1-2004-01-16-21:29:15 import
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195
diff
changeset
|
247 end = 0; |
92db0aa1e83f
nginx-0.0.1-2004-01-16-21:29:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
248 suffix = 0; |
99
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
249 |
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
250 while (*p == ' ') { p++; } |
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
251 |
231
92db0aa1e83f
nginx-0.0.1-2004-01-16-21:29:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
252 if (*p != '-') { |
92db0aa1e83f
nginx-0.0.1-2004-01-16-21:29:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
253 if (*p < '0' || *p > '9') { |
2118
c1f589732d8c
split ngx_http_range_filter_module
Igor Sysoev <igor@sysoev.ru>
parents:
2049
diff
changeset
|
254 return NGX_HTTP_RANGE_NOT_SATISFIABLE; |
231
92db0aa1e83f
nginx-0.0.1-2004-01-16-21:29:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
255 } |
99
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
256 |
231
92db0aa1e83f
nginx-0.0.1-2004-01-16-21:29:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
257 while (*p >= '0' && *p <= '9') { |
92db0aa1e83f
nginx-0.0.1-2004-01-16-21:29:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
258 start = start * 10 + *p++ - '0'; |
92db0aa1e83f
nginx-0.0.1-2004-01-16-21:29:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
259 } |
92db0aa1e83f
nginx-0.0.1-2004-01-16-21:29:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
260 |
92db0aa1e83f
nginx-0.0.1-2004-01-16-21:29:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
261 while (*p == ' ') { p++; } |
92db0aa1e83f
nginx-0.0.1-2004-01-16-21:29:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
262 |
92db0aa1e83f
nginx-0.0.1-2004-01-16-21:29:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
263 if (*p++ != '-') { |
2118
c1f589732d8c
split ngx_http_range_filter_module
Igor Sysoev <igor@sysoev.ru>
parents:
2049
diff
changeset
|
264 return NGX_HTTP_RANGE_NOT_SATISFIABLE; |
231
92db0aa1e83f
nginx-0.0.1-2004-01-16-21:29:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
265 } |
99
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
266 |
4057
3205a6d6c6ec
Ranges processing small optimization.
Igor Sysoev <igor@sysoev.ru>
parents:
4056
diff
changeset
|
267 if (start >= content_length) { |
4056
e9213133993a
Now unsatisfiable ranges are processed according to RFC 2616.
Igor Sysoev <igor@sysoev.ru>
parents:
4055
diff
changeset
|
268 goto skip; |
231
92db0aa1e83f
nginx-0.0.1-2004-01-16-21:29:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
269 } |
92db0aa1e83f
nginx-0.0.1-2004-01-16-21:29:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
270 |
92db0aa1e83f
nginx-0.0.1-2004-01-16-21:29:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
271 while (*p == ' ') { p++; } |
99
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
272 |
231
92db0aa1e83f
nginx-0.0.1-2004-01-16-21:29:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
273 if (*p == ',' || *p == '\0') { |
4057
3205a6d6c6ec
Ranges processing small optimization.
Igor Sysoev <igor@sysoev.ru>
parents:
4056
diff
changeset
|
274 end = content_length; |
4055
9cce506be97d
Ranges processing small optimization.
Igor Sysoev <igor@sysoev.ru>
parents:
4054
diff
changeset
|
275 goto found; |
99
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
276 } |
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
277 |
231
92db0aa1e83f
nginx-0.0.1-2004-01-16-21:29:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
278 } else { |
92db0aa1e83f
nginx-0.0.1-2004-01-16-21:29:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
279 suffix = 1; |
92db0aa1e83f
nginx-0.0.1-2004-01-16-21:29:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
280 p++; |
99
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
281 } |
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
282 |
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
283 if (*p < '0' || *p > '9') { |
2118
c1f589732d8c
split ngx_http_range_filter_module
Igor Sysoev <igor@sysoev.ru>
parents:
2049
diff
changeset
|
284 return NGX_HTTP_RANGE_NOT_SATISFIABLE; |
99
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
285 } |
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
286 |
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
287 while (*p >= '0' && *p <= '9') { |
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
288 end = end * 10 + *p++ - '0'; |
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
289 } |
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
290 |
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
291 while (*p == ' ') { p++; } |
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
292 |
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
293 if (*p != ',' && *p != '\0') { |
2118
c1f589732d8c
split ngx_http_range_filter_module
Igor Sysoev <igor@sysoev.ru>
parents:
2049
diff
changeset
|
294 return NGX_HTTP_RANGE_NOT_SATISFIABLE; |
99
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
295 } |
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
296 |
231
92db0aa1e83f
nginx-0.0.1-2004-01-16-21:29:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
297 if (suffix) { |
4057
3205a6d6c6ec
Ranges processing small optimization.
Igor Sysoev <igor@sysoev.ru>
parents:
4056
diff
changeset
|
298 start = content_length - end; |
3205a6d6c6ec
Ranges processing small optimization.
Igor Sysoev <igor@sysoev.ru>
parents:
4056
diff
changeset
|
299 end = content_length - 1; |
231
92db0aa1e83f
nginx-0.0.1-2004-01-16-21:29:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
300 } |
92db0aa1e83f
nginx-0.0.1-2004-01-16-21:29:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
301 |
92db0aa1e83f
nginx-0.0.1-2004-01-16-21:29:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
302 if (start > end) { |
4056
e9213133993a
Now unsatisfiable ranges are processed according to RFC 2616.
Igor Sysoev <igor@sysoev.ru>
parents:
4055
diff
changeset
|
303 goto skip; |
99
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
304 } |
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
305 |
4057
3205a6d6c6ec
Ranges processing small optimization.
Igor Sysoev <igor@sysoev.ru>
parents:
4056
diff
changeset
|
306 if (end >= content_length) { |
3205a6d6c6ec
Ranges processing small optimization.
Igor Sysoev <igor@sysoev.ru>
parents:
4056
diff
changeset
|
307 end = content_length; |
4055
9cce506be97d
Ranges processing small optimization.
Igor Sysoev <igor@sysoev.ru>
parents:
4054
diff
changeset
|
308 |
9cce506be97d
Ranges processing small optimization.
Igor Sysoev <igor@sysoev.ru>
parents:
4054
diff
changeset
|
309 } else { |
9cce506be97d
Ranges processing small optimization.
Igor Sysoev <igor@sysoev.ru>
parents:
4054
diff
changeset
|
310 end++; |
9cce506be97d
Ranges processing small optimization.
Igor Sysoev <igor@sysoev.ru>
parents:
4054
diff
changeset
|
311 } |
9cce506be97d
Ranges processing small optimization.
Igor Sysoev <igor@sysoev.ru>
parents:
4054
diff
changeset
|
312 |
9cce506be97d
Ranges processing small optimization.
Igor Sysoev <igor@sysoev.ru>
parents:
4054
diff
changeset
|
313 found: |
9cce506be97d
Ranges processing small optimization.
Igor Sysoev <igor@sysoev.ru>
parents:
4054
diff
changeset
|
314 |
963
78e70dae89f0
move ranges array to ngx_http_range_filter_ctx_t
Igor Sysoev <igor@sysoev.ru>
parents:
962
diff
changeset
|
315 range = ngx_array_push(&ctx->ranges); |
501 | 316 if (range == NULL) { |
461 | 317 return NGX_ERROR; |
318 } | |
319 | |
99
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
320 range->start = start; |
4055
9cce506be97d
Ranges processing small optimization.
Igor Sysoev <igor@sysoev.ru>
parents:
4054
diff
changeset
|
321 range->end = end; |
99
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
322 |
4055
9cce506be97d
Ranges processing small optimization.
Igor Sysoev <igor@sysoev.ru>
parents:
4054
diff
changeset
|
323 size += end - start; |
4035
c2a91088b0c0
Now if total size of all ranges is greater than source response size,
Igor Sysoev <igor@sysoev.ru>
parents:
3516
diff
changeset
|
324 |
4056
e9213133993a
Now unsatisfiable ranges are processed according to RFC 2616.
Igor Sysoev <igor@sysoev.ru>
parents:
4055
diff
changeset
|
325 skip: |
e9213133993a
Now unsatisfiable ranges are processed according to RFC 2616.
Igor Sysoev <igor@sysoev.ru>
parents:
4055
diff
changeset
|
326 |
231
92db0aa1e83f
nginx-0.0.1-2004-01-16-21:29:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
327 if (*p++ != ',') { |
4035
c2a91088b0c0
Now if total size of all ranges is greater than source response size,
Igor Sysoev <igor@sysoev.ru>
parents:
3516
diff
changeset
|
328 break; |
231
92db0aa1e83f
nginx-0.0.1-2004-01-16-21:29:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
329 } |
99
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
330 } |
4035
c2a91088b0c0
Now if total size of all ranges is greater than source response size,
Igor Sysoev <igor@sysoev.ru>
parents:
3516
diff
changeset
|
331 |
4056
e9213133993a
Now unsatisfiable ranges are processed according to RFC 2616.
Igor Sysoev <igor@sysoev.ru>
parents:
4055
diff
changeset
|
332 if (ctx->ranges.nelts == 0) { |
e9213133993a
Now unsatisfiable ranges are processed according to RFC 2616.
Igor Sysoev <igor@sysoev.ru>
parents:
4055
diff
changeset
|
333 return NGX_HTTP_RANGE_NOT_SATISFIABLE; |
e9213133993a
Now unsatisfiable ranges are processed according to RFC 2616.
Igor Sysoev <igor@sysoev.ru>
parents:
4055
diff
changeset
|
334 } |
e9213133993a
Now unsatisfiable ranges are processed according to RFC 2616.
Igor Sysoev <igor@sysoev.ru>
parents:
4055
diff
changeset
|
335 |
4057
3205a6d6c6ec
Ranges processing small optimization.
Igor Sysoev <igor@sysoev.ru>
parents:
4056
diff
changeset
|
336 if (size > content_length) { |
4035
c2a91088b0c0
Now if total size of all ranges is greater than source response size,
Igor Sysoev <igor@sysoev.ru>
parents:
3516
diff
changeset
|
337 return NGX_DECLINED; |
c2a91088b0c0
Now if total size of all ranges is greater than source response size,
Igor Sysoev <igor@sysoev.ru>
parents:
3516
diff
changeset
|
338 } |
c2a91088b0c0
Now if total size of all ranges is greater than source response size,
Igor Sysoev <igor@sysoev.ru>
parents:
3516
diff
changeset
|
339 |
c2a91088b0c0
Now if total size of all ranges is greater than source response size,
Igor Sysoev <igor@sysoev.ru>
parents:
3516
diff
changeset
|
340 return NGX_OK; |
2118
c1f589732d8c
split ngx_http_range_filter_module
Igor Sysoev <igor@sysoev.ru>
parents:
2049
diff
changeset
|
341 } |
c1f589732d8c
split ngx_http_range_filter_module
Igor Sysoev <igor@sysoev.ru>
parents:
2049
diff
changeset
|
342 |
c1f589732d8c
split ngx_http_range_filter_module
Igor Sysoev <igor@sysoev.ru>
parents:
2049
diff
changeset
|
343 |
c1f589732d8c
split ngx_http_range_filter_module
Igor Sysoev <igor@sysoev.ru>
parents:
2049
diff
changeset
|
344 static ngx_int_t |
c1f589732d8c
split ngx_http_range_filter_module
Igor Sysoev <igor@sysoev.ru>
parents:
2049
diff
changeset
|
345 ngx_http_range_singlepart_header(ngx_http_request_t *r, |
c1f589732d8c
split ngx_http_range_filter_module
Igor Sysoev <igor@sysoev.ru>
parents:
2049
diff
changeset
|
346 ngx_http_range_filter_ctx_t *ctx) |
c1f589732d8c
split ngx_http_range_filter_module
Igor Sysoev <igor@sysoev.ru>
parents:
2049
diff
changeset
|
347 { |
c1f589732d8c
split ngx_http_range_filter_module
Igor Sysoev <igor@sysoev.ru>
parents:
2049
diff
changeset
|
348 ngx_table_elt_t *content_range; |
c1f589732d8c
split ngx_http_range_filter_module
Igor Sysoev <igor@sysoev.ru>
parents:
2049
diff
changeset
|
349 ngx_http_range_t *range; |
c1f589732d8c
split ngx_http_range_filter_module
Igor Sysoev <igor@sysoev.ru>
parents:
2049
diff
changeset
|
350 |
c1f589732d8c
split ngx_http_range_filter_module
Igor Sysoev <igor@sysoev.ru>
parents:
2049
diff
changeset
|
351 content_range = ngx_list_push(&r->headers_out.headers); |
c1f589732d8c
split ngx_http_range_filter_module
Igor Sysoev <igor@sysoev.ru>
parents:
2049
diff
changeset
|
352 if (content_range == NULL) { |
c1f589732d8c
split ngx_http_range_filter_module
Igor Sysoev <igor@sysoev.ru>
parents:
2049
diff
changeset
|
353 return NGX_ERROR; |
c1f589732d8c
split ngx_http_range_filter_module
Igor Sysoev <igor@sysoev.ru>
parents:
2049
diff
changeset
|
354 } |
99
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
355 |
2118
c1f589732d8c
split ngx_http_range_filter_module
Igor Sysoev <igor@sysoev.ru>
parents:
2049
diff
changeset
|
356 r->headers_out.content_range = content_range; |
461 | 357 |
2118
c1f589732d8c
split ngx_http_range_filter_module
Igor Sysoev <igor@sysoev.ru>
parents:
2049
diff
changeset
|
358 content_range->hash = 1; |
3516
dd1570b6f237
ngx_str_set() and ngx_str_null()
Igor Sysoev <igor@sysoev.ru>
parents:
3331
diff
changeset
|
359 ngx_str_set(&content_range->key, "Content-Range"); |
99
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
360 |
2118
c1f589732d8c
split ngx_http_range_filter_module
Igor Sysoev <igor@sysoev.ru>
parents:
2049
diff
changeset
|
361 content_range->value.data = ngx_pnalloc(r->pool, |
c1f589732d8c
split ngx_http_range_filter_module
Igor Sysoev <igor@sysoev.ru>
parents:
2049
diff
changeset
|
362 sizeof("bytes -/") - 1 + 3 * NGX_OFF_T_LEN); |
c1f589732d8c
split ngx_http_range_filter_module
Igor Sysoev <igor@sysoev.ru>
parents:
2049
diff
changeset
|
363 if (content_range->value.data == NULL) { |
c1f589732d8c
split ngx_http_range_filter_module
Igor Sysoev <igor@sysoev.ru>
parents:
2049
diff
changeset
|
364 return NGX_ERROR; |
461 | 365 } |
366 | |
2118
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367 /* "Content-Range: bytes SSSS-EEEE/TTTT" header */ |
461 | 368 |
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369 range = ctx->ranges.elts; |
461 | 370 |
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371 content_range->value.len = ngx_sprintf(content_range->value.data, |
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372 "bytes %O-%O/%O", |
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373 range->start, range->end - 1, |
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374 r->headers_out.content_length_n) |
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375 - content_range->value.data; |
461 | 376 |
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377 r->headers_out.content_length_n = range->end - range->start; |
461 | 378 |
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379 if (r->headers_out.content_length) { |
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380 r->headers_out.content_length->hash = 0; |
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381 r->headers_out.content_length = NULL; |
461 | 382 } |
383 | |
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384 return ngx_http_next_header_filter(r); |
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385 } |
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386 |
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387 |
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388 static ngx_int_t |
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389 ngx_http_range_multipart_header(ngx_http_request_t *r, |
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390 ngx_http_range_filter_ctx_t *ctx) |
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391 { |
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392 size_t len; |
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393 ngx_uint_t i; |
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394 ngx_http_range_t *range; |
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395 ngx_atomic_uint_t boundary; |
461 | 396 |
493 | 397 len = sizeof(CRLF "--") - 1 + NGX_ATOMIC_T_LEN |
398 + sizeof(CRLF "Content-Type: ") - 1 | |
509 | 399 + r->headers_out.content_type.len |
461 | 400 + sizeof(CRLF "Content-Range: bytes ") - 1; |
401 | |
402 if (r->headers_out.charset.len) { | |
403 len += sizeof("; charset=") - 1 + r->headers_out.charset.len; | |
404 } | |
405 | |
2049 | 406 ctx->boundary_header.data = ngx_pnalloc(r->pool, len); |
501 | 407 if (ctx->boundary_header.data == NULL) { |
461 | 408 return NGX_ERROR; |
409 } | |
410 | |
493 | 411 boundary = ngx_next_temp_number(0); |
461 | 412 |
413 /* | |
414 * The boundary header of the range: | |
415 * CRLF | |
416 * "--0123456789" CRLF | |
417 * "Content-Type: image/jpeg" CRLF | |
418 * "Content-Range: bytes " | |
419 */ | |
420 | |
421 if (r->headers_out.charset.len) { | |
422 ctx->boundary_header.len = ngx_sprintf(ctx->boundary_header.data, | |
493 | 423 CRLF "--%0muA" CRLF |
461 | 424 "Content-Type: %V; charset=%V" CRLF |
425 "Content-Range: bytes ", | |
426 boundary, | |
509 | 427 &r->headers_out.content_type, |
461 | 428 &r->headers_out.charset) |
429 - ctx->boundary_header.data; | |
430 | |
431 r->headers_out.charset.len = 0; | |
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432 |
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433 } else if (r->headers_out.content_type.len) { |
461 | 434 ctx->boundary_header.len = ngx_sprintf(ctx->boundary_header.data, |
493 | 435 CRLF "--%0muA" CRLF |
461 | 436 "Content-Type: %V" CRLF |
437 "Content-Range: bytes ", | |
438 boundary, | |
509 | 439 &r->headers_out.content_type) |
461 | 440 - ctx->boundary_header.data; |
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441 |
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442 } else { |
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443 ctx->boundary_header.len = ngx_sprintf(ctx->boundary_header.data, |
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444 CRLF "--%0muA" CRLF |
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445 "Content-Range: bytes ", |
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446 boundary) |
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447 - ctx->boundary_header.data; |
461 | 448 } |
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449 |
509 | 450 r->headers_out.content_type.data = |
2049 | 451 ngx_pnalloc(r->pool, |
452 sizeof("Content-Type: multipart/byteranges; boundary=") - 1 | |
453 + NGX_ATOMIC_T_LEN); | |
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454 |
509 | 455 if (r->headers_out.content_type.data == NULL) { |
461 | 456 return NGX_ERROR; |
457 } | |
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458 |
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459 r->headers_out.content_type_lowcase = NULL; |
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460 |
461 | 461 /* "Content-Type: multipart/byteranges; boundary=0123456789" */ |
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462 |
509 | 463 r->headers_out.content_type.len = |
464 ngx_sprintf(r->headers_out.content_type.data, | |
493 | 465 "multipart/byteranges; boundary=%0muA", |
461 | 466 boundary) |
509 | 467 - r->headers_out.content_type.data; |
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468 |
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469 r->headers_out.content_type_len = r->headers_out.content_type.len; |
493 | 470 |
461 | 471 /* the size of the last boundary CRLF "--0123456789--" CRLF */ |
493 | 472 |
473 len = sizeof(CRLF "--") - 1 + NGX_ATOMIC_T_LEN + sizeof("--" CRLF) - 1; | |
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474 |
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475 range = ctx->ranges.elts; |
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476 for (i = 0; i < ctx->ranges.nelts; i++) { |
455 | 477 |
461 | 478 /* the size of the range: "SSSS-EEEE/TTTT" CRLF CRLF */ |
455 | 479 |
461 | 480 range[i].content_range.data = |
2049 | 481 ngx_pnalloc(r->pool, 3 * NGX_OFF_T_LEN + 2 + 4); |
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482 |
461 | 483 if (range[i].content_range.data == NULL) { |
484 return NGX_ERROR; | |
485 } | |
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486 |
461 | 487 range[i].content_range.len = ngx_sprintf(range[i].content_range.data, |
488 "%O-%O/%O" CRLF CRLF, | |
489 range[i].start, range[i].end - 1, | |
490 r->headers_out.content_length_n) | |
491 - range[i].content_range.data; | |
160
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492 |
461 | 493 len += ctx->boundary_header.len + range[i].content_range.len |
494 + (size_t) (range[i].end - range[i].start); | |
495 } | |
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496 |
461 | 497 r->headers_out.content_length_n = len; |
960 | 498 |
499 if (r->headers_out.content_length) { | |
500 r->headers_out.content_length->hash = 0; | |
501 r->headers_out.content_length = NULL; | |
502 } | |
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503 |
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504 return ngx_http_next_header_filter(r); |
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505 } |
1630 | 506 |
507 | |
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508 static ngx_int_t |
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509 ngx_http_range_not_satisfiable(ngx_http_request_t *r) |
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510 { |
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511 ngx_table_elt_t *content_range; |
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512 |
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513 r->headers_out.status = NGX_HTTP_RANGE_NOT_SATISFIABLE; |
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514 |
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515 content_range = ngx_list_push(&r->headers_out.headers); |
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516 if (content_range == NULL) { |
1630 | 517 return NGX_ERROR; |
518 } | |
519 | |
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520 r->headers_out.content_range = content_range; |
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521 |
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522 content_range->hash = 1; |
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523 ngx_str_set(&content_range->key, "Content-Range"); |
1630 | 524 |
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525 content_range->value.data = ngx_pnalloc(r->pool, |
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526 sizeof("bytes */") - 1 + NGX_OFF_T_LEN); |
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527 if (content_range->value.data == NULL) { |
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528 return NGX_ERROR; |
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529 } |
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530 |
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531 content_range->value.len = ngx_sprintf(content_range->value.data, |
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532 "bytes */%O", |
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533 r->headers_out.content_length_n) |
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534 - content_range->value.data; |
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535 |
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536 ngx_http_clear_content_length(r); |
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537 |
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538 return NGX_HTTP_RANGE_NOT_SATISFIABLE; |
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539 } |
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540 |
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541 |
493 | 542 static ngx_int_t |
543 ngx_http_range_body_filter(ngx_http_request_t *r, ngx_chain_t *in) | |
99
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544 { |
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545 ngx_http_range_filter_ctx_t *ctx; |
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546 |
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547 if (in == NULL) { |
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548 return ngx_http_next_body_filter(r, in); |
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549 } |
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550 |
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551 ctx = ngx_http_get_module_ctx(r, ngx_http_range_body_filter_module); |
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552 |
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553 if (ctx == NULL) { |
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554 return ngx_http_next_body_filter(r, in); |
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555 } |
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
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parents:
diff
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|
556 |
2121
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|
557 if (ctx->ranges.nelts == 1) { |
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558 return ngx_http_range_singlepart_body(r, ctx, in); |
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|
559 } |
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|
560 |
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|
561 /* |
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|
562 * multipart ranges are supported only if whole body is in a single buffer |
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|
563 */ |
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|
564 |
962
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|
565 if (ngx_buf_special(in->buf)) { |
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|
566 return ngx_http_next_body_filter(r, in); |
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|
567 } |
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diff
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|
568 |
2118
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diff
changeset
|
569 if (ngx_http_range_test_overlapped(r, ctx, in) != NGX_OK) { |
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|
570 return NGX_ERROR; |
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|
571 } |
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|
572 |
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split ngx_http_range_filter_module
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|
573 return ngx_http_range_multipart_body(r, ctx, in); |
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|
574 } |
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changeset
|
575 |
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changeset
|
576 |
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changeset
|
577 static ngx_int_t |
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|
578 ngx_http_range_test_overlapped(ngx_http_request_t *r, |
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|
579 ngx_http_range_filter_ctx_t *ctx, ngx_chain_t *in) |
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|
580 { |
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|
581 off_t start, last; |
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|
582 ngx_buf_t *buf; |
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diff
changeset
|
583 ngx_uint_t i; |
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changeset
|
584 ngx_http_range_t *range; |
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|
585 |
962
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changeset
|
586 if (ctx->offset) { |
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|
587 goto overlapped; |
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diff
changeset
|
588 } |
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support ranges for single memory buffer
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changeset
|
589 |
2118
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|
590 buf = in->buf; |
960 | 591 |
592 if (!buf->last_buf) { | |
962
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|
593 |
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diff
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|
594 if (buf->in_file) { |
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diff
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|
595 start = buf->file_pos + ctx->offset; |
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|
596 last = buf->file_last + ctx->offset; |
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|
597 |
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|
598 } else { |
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|
599 start = buf->pos - buf->start + ctx->offset; |
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|
600 last = buf->last - buf->start + ctx->offset; |
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|
601 } |
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support ranges for single memory buffer
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diff
changeset
|
602 |
2118
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split ngx_http_range_filter_module
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diff
changeset
|
603 range = ctx->ranges.elts; |
963
78e70dae89f0
move ranges array to ngx_http_range_filter_ctx_t
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parents:
962
diff
changeset
|
604 for (i = 0; i < ctx->ranges.nelts; i++) { |
962
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parents:
961
diff
changeset
|
605 if (start > range[i].start || last < range[i].end) { |
960 | 606 goto overlapped; |
607 } | |
608 } | |
609 } | |
610 | |
962
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support ranges for single memory buffer
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parents:
961
diff
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|
611 ctx->offset = ngx_buf_size(buf); |
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parents:
961
diff
changeset
|
612 |
2118
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changeset
|
613 return NGX_OK; |
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changeset
|
614 |
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changeset
|
615 overlapped: |
960 | 616 |
2118
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|
617 ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0, |
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|
618 "range in overlapped buffers"); |
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|
619 |
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|
620 return NGX_ERROR; |
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|
621 } |
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changeset
|
622 |
962
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changeset
|
623 |
2118
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|
624 static ngx_int_t |
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changeset
|
625 ngx_http_range_singlepart_body(ngx_http_request_t *r, |
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changeset
|
626 ngx_http_range_filter_ctx_t *ctx, ngx_chain_t *in) |
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|
627 { |
2121
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support several buf's for single-part range
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2119
diff
changeset
|
628 off_t start, last; |
2118
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changeset
|
629 ngx_buf_t *buf; |
2121
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support several buf's for single-part range
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diff
changeset
|
630 ngx_chain_t *out, *cl, **ll; |
2118
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diff
changeset
|
631 ngx_http_range_t *range; |
960 | 632 |
2121
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|
633 out = NULL; |
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support several buf's for single-part range
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|
634 ll = &out; |
2118
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|
635 range = ctx->ranges.elts; |
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changeset
|
636 |
2121
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support several buf's for single-part range
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|
637 for (cl = in; cl; cl = cl->next) { |
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diff
changeset
|
638 |
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|
639 buf = cl->buf; |
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support several buf's for single-part range
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diff
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|
640 |
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support several buf's for single-part range
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diff
changeset
|
641 start = ctx->offset; |
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support several buf's for single-part range
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|
642 last = ctx->offset + ngx_buf_size(buf); |
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diff
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|
643 |
b39c0040b3e4
support several buf's for single-part range
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|
644 ctx->offset = last; |
b39c0040b3e4
support several buf's for single-part range
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diff
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|
645 |
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support several buf's for single-part range
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|
646 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
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support several buf's for single-part range
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|
647 "http range body buf: %O-%O", start, last); |
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support several buf's for single-part range
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diff
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|
648 |
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support several buf's for single-part range
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changeset
|
649 if (ngx_buf_special(buf)) { |
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support several buf's for single-part range
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diff
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|
650 *ll = cl; |
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support several buf's for single-part range
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|
651 ll = &cl->next; |
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support several buf's for single-part range
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diff
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|
652 continue; |
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support several buf's for single-part range
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|
653 } |
b39c0040b3e4
support several buf's for single-part range
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diff
changeset
|
654 |
b39c0040b3e4
support several buf's for single-part range
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diff
changeset
|
655 if (range->end <= start || range->start >= last) { |
b39c0040b3e4
support several buf's for single-part range
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diff
changeset
|
656 |
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support several buf's for single-part range
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|
657 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
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diff
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|
658 "http range body skip"); |
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support several buf's for single-part range
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|
659 |
2269 | 660 if (buf->in_file) { |
661 buf->file_pos = buf->file_last; | |
662 } | |
663 | |
2121
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|
664 buf->pos = buf->last; |
2269 | 665 buf->sync = 1; |
666 | |
2121
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|
667 continue; |
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support several buf's for single-part range
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|
668 } |
b39c0040b3e4
support several buf's for single-part range
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|
669 |
b39c0040b3e4
support several buf's for single-part range
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changeset
|
670 if (range->start > start) { |
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support several buf's for single-part range
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diff
changeset
|
671 |
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support several buf's for single-part range
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changeset
|
672 if (buf->in_file) { |
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support several buf's for single-part range
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changeset
|
673 buf->file_pos += range->start - start; |
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support several buf's for single-part range
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diff
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|
674 } |
b39c0040b3e4
support several buf's for single-part range
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diff
changeset
|
675 |
b39c0040b3e4
support several buf's for single-part range
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changeset
|
676 if (ngx_buf_in_memory(buf)) { |
b39c0040b3e4
support several buf's for single-part range
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|
677 buf->pos += (size_t) (range->start - start); |
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support several buf's for single-part range
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changeset
|
678 } |
b39c0040b3e4
support several buf's for single-part range
Igor Sysoev <igor@sysoev.ru>
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2119
diff
changeset
|
679 } |
b39c0040b3e4
support several buf's for single-part range
Igor Sysoev <igor@sysoev.ru>
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2119
diff
changeset
|
680 |
b39c0040b3e4
support several buf's for single-part range
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diff
changeset
|
681 if (range->end <= last) { |
b39c0040b3e4
support several buf's for single-part range
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diff
changeset
|
682 |
b39c0040b3e4
support several buf's for single-part range
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diff
changeset
|
683 if (buf->in_file) { |
b39c0040b3e4
support several buf's for single-part range
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changeset
|
684 buf->file_last -= last - range->end; |
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support several buf's for single-part range
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diff
changeset
|
685 } |
b39c0040b3e4
support several buf's for single-part range
Igor Sysoev <igor@sysoev.ru>
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diff
changeset
|
686 |
b39c0040b3e4
support several buf's for single-part range
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diff
changeset
|
687 if (ngx_buf_in_memory(buf)) { |
b39c0040b3e4
support several buf's for single-part range
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2119
diff
changeset
|
688 buf->last -= (size_t) (last - range->end); |
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689 } |
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690 |
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691 buf->last_buf = 1; |
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692 *ll = cl; |
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693 cl->next = NULL; |
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694 |
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695 break; |
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696 } |
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697 |
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698 *ll = cl; |
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699 ll = &cl->next; |
960 | 700 } |
701 | |
2121
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702 if (out == NULL) { |
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703 return NGX_OK; |
2118
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704 } |
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705 |
2121
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706 return ngx_http_next_body_filter(r, out); |
2118
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707 } |
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708 |
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709 |
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710 static ngx_int_t |
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711 ngx_http_range_multipart_body(ngx_http_request_t *r, |
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712 ngx_http_range_filter_ctx_t *ctx, ngx_chain_t *in) |
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713 { |
2592
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714 off_t body_start; |
2118
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715 ngx_buf_t *b, *buf; |
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716 ngx_uint_t i; |
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717 ngx_chain_t *out, *hcl, *rcl, *dcl, **ll; |
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718 ngx_http_range_t *range; |
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|
719 |
960 | 720 ll = &out; |
2118
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|
721 buf = in->buf; |
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722 range = ctx->ranges.elts; |
160
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723 |
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724 #if (NGX_HTTP_CACHE) |
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725 body_start = r->cached ? r->cache->body_start : 0; |
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726 #else |
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727 body_start = 0; |
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728 #endif |
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729 |
963
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|
730 for (i = 0; i < ctx->ranges.nelts; i++) { |
99
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parents:
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|
731 |
960 | 732 /* |
733 * The boundary header of the range: | |
734 * CRLF | |
735 * "--0123456789" CRLF | |
736 * "Content-Type: image/jpeg" CRLF | |
737 * "Content-Range: bytes " | |
738 */ | |
739 | |
740 b = ngx_calloc_buf(r->pool); | |
741 if (b == NULL) { | |
742 return NGX_ERROR; | |
99
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|
743 } |
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|
744 |
960 | 745 b->memory = 1; |
746 b->pos = ctx->boundary_header.data; | |
747 b->last = ctx->boundary_header.data + ctx->boundary_header.len; | |
160
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748 |
960 | 749 hcl = ngx_alloc_chain_link(r->pool); |
750 if (hcl == NULL) { | |
751 return NGX_ERROR; | |
752 } | |
461 | 753 |
960 | 754 hcl->buf = b; |
99
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755 |
461 | 756 |
960 | 757 /* "SSSS-EEEE/TTTT" CRLF CRLF */ |
160
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758 |
501 | 759 b = ngx_calloc_buf(r->pool); |
760 if (b == NULL) { | |
461 | 761 return NGX_ERROR; |
762 } | |
763 | |
343
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|
764 b->temporary = 1; |
960 | 765 b->pos = range[i].content_range.data; |
766 b->last = range[i].content_range.data + range[i].content_range.len; | |
767 | |
768 rcl = ngx_alloc_chain_link(r->pool); | |
769 if (rcl == NULL) { | |
770 return NGX_ERROR; | |
771 } | |
772 | |
773 rcl->buf = b; | |
774 | |
775 | |
776 /* the range data */ | |
461 | 777 |
960 | 778 b = ngx_calloc_buf(r->pool); |
779 if (b == NULL) { | |
780 return NGX_ERROR; | |
781 } | |
782 | |
962
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783 b->in_file = buf->in_file; |
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784 b->temporary = buf->temporary; |
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785 b->memory = buf->memory; |
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|
786 b->mmap = buf->mmap; |
960 | 787 b->file = buf->file; |
788 | |
962
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|
789 if (buf->in_file) { |
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|
790 b->file_pos = body_start + range[i].start; |
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|
791 b->file_last = body_start + range[i].end; |
962
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diff
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|
792 } |
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diff
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|
793 |
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|
794 if (ngx_buf_in_memory(buf)) { |
1093 | 795 b->pos = buf->start + (size_t) range[i].start; |
796 b->last = buf->start + (size_t) range[i].end; | |
962
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diff
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|
797 } |
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|
798 |
960 | 799 dcl = ngx_alloc_chain_link(r->pool); |
800 if (dcl == NULL) { | |
461 | 801 return NGX_ERROR; |
802 } | |
803 | |
960 | 804 dcl->buf = b; |
461 | 805 |
155
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|
806 *ll = hcl; |
960 | 807 hcl->next = rcl; |
808 rcl->next = dcl; | |
809 ll = &dcl->next; | |
810 } | |
99
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|
811 |
960 | 812 /* the last boundary CRLF "--0123456789--" CRLF */ |
813 | |
814 b = ngx_calloc_buf(r->pool); | |
815 if (b == NULL) { | |
816 return NGX_ERROR; | |
817 } | |
818 | |
819 b->temporary = 1; | |
820 b->last_buf = 1; | |
821 | |
2049 | 822 b->pos = ngx_pnalloc(r->pool, sizeof(CRLF "--") - 1 + NGX_ATOMIC_T_LEN |
823 + sizeof("--" CRLF) - 1); | |
960 | 824 if (b->pos == NULL) { |
825 return NGX_ERROR; | |
99
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|
826 } |
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|
827 |
1195
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1107
diff
changeset
|
828 b->last = ngx_cpymem(b->pos, ctx->boundary_header.data, |
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|
829 sizeof(CRLF "--") - 1 + NGX_ATOMIC_T_LEN); |
960 | 830 *b->last++ = '-'; *b->last++ = '-'; |
831 *b->last++ = CR; *b->last++ = LF; | |
832 | |
833 hcl = ngx_alloc_chain_link(r->pool); | |
834 if (hcl == NULL) { | |
835 return NGX_ERROR; | |
836 } | |
837 | |
838 hcl->buf = b; | |
839 hcl->next = NULL; | |
99
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|
840 |
960 | 841 *ll = hcl; |
842 | |
843 return ngx_http_next_body_filter(r, out); | |
99
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|
844 } |
a059e1aa65d4
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|
845 |
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|
846 |
493 | 847 static ngx_int_t |
681 | 848 ngx_http_range_header_filter_init(ngx_conf_t *cf) |
99
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|
849 { |
155
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|
850 ngx_http_next_header_filter = ngx_http_top_header_filter; |
99
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|
851 ngx_http_top_header_filter = ngx_http_range_header_filter; |
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|
852 |
334
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314
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|
853 return NGX_OK; |
af451db3fe99
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314
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|
854 } |
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|
855 |
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|
856 |
493 | 857 static ngx_int_t |
681 | 858 ngx_http_range_body_filter_init(ngx_conf_t *cf) |
334
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314
diff
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|
859 { |
155
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153
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|
860 ngx_http_next_body_filter = ngx_http_top_body_filter; |
99
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diff
changeset
|
861 ngx_http_top_body_filter = ngx_http_range_body_filter; |
a059e1aa65d4
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diff
changeset
|
862 |
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diff
changeset
|
863 return NGX_OK; |
a059e1aa65d4
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parents:
diff
changeset
|
864 } |