Mercurial > hg > nginx-quic
annotate src/http/modules/ngx_http_index_module.c @ 4458:2d4ff8bd5649
Limit conn: returned to the old behavior of using the first actual limit on
the way.
It was unintentionally changed in r4272, so that it could only limit the first
location where the processing of the request has reached PREACCESS phase.
| author | Valentin Bartenev <vbart@nginx.com> |
|---|---|
| date | Fri, 10 Feb 2012 10:48:58 +0000 |
| parents | d620f497c50f |
| children | 08713bac87fc 50143b8fb95f |
| rev | line source |
|---|---|
|
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1 |
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2 /* |
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3 * Copyright (C) Igor Sysoev |
| 4412 | 4 * Copyright (C) Nginx, Inc. |
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5 */ |
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8 #include <ngx_config.h> |
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9 #include <ngx_core.h> |
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10 #include <ngx_http.h> |
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11 |
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13 typedef struct { |
| 509 | 14 ngx_str_t name; |
| 15 ngx_array_t *lengths; | |
| 16 ngx_array_t *values; | |
| 17 } ngx_http_index_t; | |
| 18 | |
| 19 | |
| 20 typedef struct { | |
| 21 ngx_array_t *indices; /* array of ngx_http_index_t */ | |
| 469 | 22 size_t max_index_len; |
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23 } ngx_http_index_loc_conf_t; |
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24 |
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25 |
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26 #define NGX_HTTP_DEFAULT_INDEX "index.html" |
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27 |
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28 |
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29 static ngx_int_t ngx_http_index_test_dir(ngx_http_request_t *r, |
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30 ngx_http_core_loc_conf_t *clcf, u_char *path, u_char *last); |
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31 static ngx_int_t ngx_http_index_error(ngx_http_request_t *r, |
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32 ngx_http_core_loc_conf_t *clcf, u_char *file, ngx_err_t err); |
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33 |
| 681 | 34 static ngx_int_t ngx_http_index_init(ngx_conf_t *cf); |
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35 static void *ngx_http_index_create_loc_conf(ngx_conf_t *cf); |
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36 static char *ngx_http_index_merge_loc_conf(ngx_conf_t *cf, |
| 509 | 37 void *parent, void *child); |
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38 static char *ngx_http_index_set_index(ngx_conf_t *cf, ngx_command_t *cmd, |
| 509 | 39 void *conf); |
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40 |
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41 |
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42 static ngx_command_t ngx_http_index_commands[] = { |
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43 |
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44 { ngx_string("index"), |
| 509 | 45 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE, |
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46 ngx_http_index_set_index, |
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47 NGX_HTTP_LOC_CONF_OFFSET, |
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48 0, |
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49 NULL }, |
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50 |
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51 ngx_null_command |
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52 }; |
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53 |
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54 |
| 667 | 55 static ngx_http_module_t ngx_http_index_module_ctx = { |
| 509 | 56 NULL, /* preconfiguration */ |
| 681 | 57 ngx_http_index_init, /* postconfiguration */ |
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58 |
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59 NULL, /* create main configuration */ |
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60 NULL, /* init main configuration */ |
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69
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61 |
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62 NULL, /* create server configuration */ |
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63 NULL, /* merge server configuration */ |
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64 |
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65 ngx_http_index_create_loc_conf, /* create location configration */ |
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66 ngx_http_index_merge_loc_conf /* merge location configration */ |
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67 }; |
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68 |
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69 |
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70 ngx_module_t ngx_http_index_module = { |
| 509 | 71 NGX_MODULE_V1, |
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72 &ngx_http_index_module_ctx, /* module context */ |
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73 ngx_http_index_commands, /* module directives */ |
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74 NGX_HTTP_MODULE, /* module type */ |
| 541 | 75 NULL, /* init master */ |
| 681 | 76 NULL, /* init module */ |
| 541 | 77 NULL, /* init process */ |
| 78 NULL, /* init thread */ | |
| 79 NULL, /* exit thread */ | |
| 80 NULL, /* exit process */ | |
| 81 NULL, /* exit master */ | |
| 82 NGX_MODULE_V1_PADDING | |
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83 }; |
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84 |
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85 |
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86 /* |
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87 * Try to open/test the first index file before the test of directory |
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88 * existence because valid requests should be much more than invalid ones. |
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89 * If the file open()/stat() would fail, then the directory stat() should |
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90 * be more quickly because some data is already cached in the kernel. |
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91 * Besides, Win32 may return ERROR_PATH_NOT_FOUND (NGX_ENOTDIR) at once. |
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92 * Unix has ENOTDIR error, however, it's less helpful than Win32's one: |
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93 * it only indicates that path contains an usual file in place of directory. |
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94 */ |
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95 |
| 509 | 96 static ngx_int_t |
| 97 ngx_http_index_handler(ngx_http_request_t *r) | |
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98 { |
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99 u_char *p, *name; |
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100 size_t len, root, reserve, allocated; |
| 509 | 101 ngx_int_t rc; |
| 1454 | 102 ngx_str_t path, uri; |
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103 ngx_uint_t i, dir_tested; |
| 509 | 104 ngx_http_index_t *index; |
| 1454 | 105 ngx_open_file_info_t of; |
| 509 | 106 ngx_http_script_code_pt code; |
| 107 ngx_http_script_engine_t e; | |
| 108 ngx_http_core_loc_conf_t *clcf; | |
| 109 ngx_http_index_loc_conf_t *ilcf; | |
| 110 ngx_http_script_len_code_pt lcode; | |
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111 |
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112 if (r->uri.data[r->uri.len - 1] != '/') { |
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113 return NGX_DECLINED; |
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114 } |
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115 |
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116 if (!(r->method & (NGX_HTTP_GET|NGX_HTTP_HEAD|NGX_HTTP_POST))) { |
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117 return NGX_DECLINED; |
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118 } |
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119 |
| 1454 | 120 ilcf = ngx_http_get_module_loc_conf(r, ngx_http_index_module); |
| 121 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); | |
| 122 | |
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123 allocated = 0; |
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124 root = 0; |
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125 dir_tested = 0; |
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126 name = NULL; |
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127 /* suppress MSVC warning */ |
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128 path.data = NULL; |
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129 |
| 509 | 130 index = ilcf->indices->elts; |
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131 for (i = 0; i < ilcf->indices->nelts; i++) { |
| 509 | 132 |
| 133 if (index[i].lengths == NULL) { | |
|
287
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134 |
| 509 | 135 if (index[i].name.data[0] == '/') { |
| 136 return ngx_http_internal_redirect(r, &index[i].name, &r->args); | |
| 137 } | |
|
201
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138 |
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139 reserve = ilcf->max_index_len; |
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140 len = index[i].name.len; |
|
144
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141 |
| 509 | 142 } else { |
| 143 ngx_memzero(&e, sizeof(ngx_http_script_engine_t)); | |
|
201
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144 |
| 509 | 145 e.ip = index[i].lengths->elts; |
| 146 e.request = r; | |
| 573 | 147 e.flushed = 1; |
| 509 | 148 |
|
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149 /* 1 is for terminating '\0' as in static names */ |
| 563 | 150 len = 1; |
|
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151 |
| 509 | 152 while (*(uintptr_t *) e.ip) { |
| 153 lcode = *(ngx_http_script_len_code_pt *) e.ip; | |
| 154 len += lcode(&e); | |
| 155 } | |
|
44
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156 |
| 563 | 157 /* 16 bytes are preallocation */ |
| 158 | |
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159 reserve = len + 16; |
| 509 | 160 } |
|
201
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161 |
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162 if (reserve > allocated) { |
| 557 | 163 |
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164 name = ngx_http_map_uri_to_path(r, &path, &root, reserve); |
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165 if (name == NULL) { |
| 557 | 166 return NGX_ERROR; |
|
201
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167 } |
| 557 | 168 |
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169 allocated = path.data + path.len - name; |
|
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170 } |
|
201
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171 |
| 509 | 172 if (index[i].values == NULL) { |
| 557 | 173 |
| 174 /* index[i].name.len includes the terminating '\0' */ | |
| 175 | |
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176 ngx_memcpy(name, index[i].name.data, index[i].name.len); |
|
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177 |
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178 path.len = (name + index[i].name.len - 1) - path.data; |
| 1454 | 179 |
| 509 | 180 } else { |
| 181 e.ip = index[i].values->elts; | |
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182 e.pos = name; |
|
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183 |
| 509 | 184 while (*(uintptr_t *) e.ip) { |
| 185 code = *(ngx_http_script_code_pt *) e.ip; | |
| 186 code((ngx_http_script_engine_t *) &e); | |
|
396
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187 } |
|
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188 |
|
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189 if (*name == '/') { |
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190 uri.len = len - 1; |
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191 uri.data = name; |
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192 return ngx_http_internal_redirect(r, &uri, &r->args); |
|
396
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193 } |
|
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194 |
| 1454 | 195 path.len = e.pos - path.data; |
| 196 | |
| 2564 | 197 *e.pos = '\0'; |
|
293
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198 } |
|
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199 |
| 2405 | 200 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
| 201 "open index \"%V\"", &path); | |
|
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202 |
|
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203 ngx_memzero(&of, sizeof(ngx_open_file_info_t)); |
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204 |
| 3178 | 205 of.read_ahead = clcf->read_ahead; |
| 2129 | 206 of.directio = clcf->directio; |
|
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207 of.valid = clcf->open_file_cache_valid; |
| 1772 | 208 of.min_uses = clcf->open_file_cache_min_uses; |
|
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209 of.test_only = 1; |
| 1454 | 210 of.errors = clcf->open_file_cache_errors; |
| 1457 | 211 of.events = clcf->open_file_cache_events; |
| 563 | 212 |
| 1799 | 213 if (ngx_open_cached_file(clcf->open_file_cache, &path, &of, r->pool) |
| 214 != NGX_OK) | |
| 215 { | |
|
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216 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, of.err, |
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217 "%s \"%s\" failed", of.failed, path.data); |
|
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218 |
| 1454 | 219 if (of.err == 0) { |
| 220 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
| 221 } | |
|
47
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222 |
|
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223 if (of.err == NGX_ENOTDIR |
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224 || of.err == NGX_ENAMETOOLONG |
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225 || of.err == NGX_EACCES) |
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226 { |
|
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227 return ngx_http_index_error(r, clcf, path.data, of.err); |
|
46
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228 } |
|
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229 |
|
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230 if (!dir_tested) { |
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231 rc = ngx_http_index_test_dir(r, clcf, path.data, name - 1); |
|
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232 |
|
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233 if (rc != NGX_OK) { |
|
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234 return rc; |
|
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235 } |
|
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236 |
|
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237 dir_tested = 1; |
|
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|
238 } |
|
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|
239 |
| 1454 | 240 if (of.err == NGX_ENOENT) { |
|
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|
241 continue; |
|
41
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diff
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|
242 } |
|
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243 |
|
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244 ngx_log_error(NGX_LOG_CRIT, r->connection->log, of.err, |
|
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245 "%s \"%s\" failed", of.failed, path.data); |
|
10
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|
246 |
|
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|
247 return NGX_HTTP_INTERNAL_SERVER_ERROR; |
|
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248 } |
|
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249 |
|
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250 uri.len = r->uri.len + len - 1; |
| 557 | 251 |
| 252 if (!clcf->alias) { | |
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253 uri.data = path.data + root; |
| 557 | 254 |
| 255 } else { | |
| 2049 | 256 uri.data = ngx_pnalloc(r->pool, uri.len); |
| 557 | 257 if (uri.data == NULL) { |
| 258 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
| 259 } | |
| 260 | |
|
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261 p = ngx_copy(uri.data, r->uri.data, r->uri.len); |
|
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262 ngx_memcpy(p, name, len - 1); |
|
199
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diff
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|
263 } |
|
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|
264 |
| 557 | 265 return ngx_http_internal_redirect(r, &uri, &r->args); |
|
0
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266 } |
|
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|
267 |
|
10
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|
268 return NGX_DECLINED; |
|
0
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269 } |
|
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|
270 |
|
24
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diff
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|
271 |
| 509 | 272 static ngx_int_t |
| 1454 | 273 ngx_http_index_test_dir(ngx_http_request_t *r, ngx_http_core_loc_conf_t *clcf, |
|
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|
274 u_char *path, u_char *last) |
| 509 | 275 { |
| 1454 | 276 u_char c; |
|
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|
277 ngx_str_t dir; |
| 1454 | 278 ngx_open_file_info_t of; |
| 509 | 279 |
|
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|
280 c = *last; |
| 1627 | 281 if (c != '/' || path == last) { |
|
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282 /* "alias" without trailing slash */ |
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283 c = *(++last); |
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284 } |
|
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|
285 *last = '\0'; |
|
46
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|
286 |
|
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287 dir.len = last - path; |
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288 dir.data = path; |
|
46
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diff
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289 |
| 1454 | 290 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
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291 "http index check dir: \"%V\"", &dir); |
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292 |
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293 ngx_memzero(&of, sizeof(ngx_open_file_info_t)); |
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294 |
| 1454 | 295 of.test_dir = 1; |
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296 of.test_only = 1; |
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297 of.valid = clcf->open_file_cache_valid; |
| 1454 | 298 of.errors = clcf->open_file_cache_errors; |
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299 |
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300 if (ngx_open_cached_file(clcf->open_file_cache, &dir, &of, r->pool) |
| 1454 | 301 != NGX_OK) |
| 302 { | |
| 303 if (of.err) { | |
| 304 | |
| 305 if (of.err == NGX_ENOENT) { | |
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306 *last = c; |
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307 return ngx_http_index_error(r, clcf, dir.data, NGX_ENOENT); |
| 1454 | 308 } |
| 309 | |
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310 if (of.err == NGX_EACCES) { |
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311 |
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312 *last = c; |
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313 |
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314 /* |
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315 * ngx_http_index_test_dir() is called after the first index |
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316 * file testing has returned an error distinct from NGX_EACCES. |
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317 * This means that directory searching is allowed. |
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318 */ |
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319 |
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320 return NGX_OK; |
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321 } |
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322 |
| 1454 | 323 ngx_log_error(NGX_LOG_CRIT, r->connection->log, of.err, |
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324 "%s \"%s\" failed", of.failed, dir.data); |
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325 } |
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326 |
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327 return NGX_HTTP_INTERNAL_SERVER_ERROR; |
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328 } |
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329 |
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330 *last = c; |
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331 |
| 1454 | 332 if (of.is_dir) { |
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333 return NGX_OK; |
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334 } |
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335 |
| 509 | 336 ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0, |
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337 "\"%s\" is not a directory", dir.data); |
| 509 | 338 |
| 339 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
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340 } |
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341 |
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342 |
| 509 | 343 static ngx_int_t |
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344 ngx_http_index_error(ngx_http_request_t *r, ngx_http_core_loc_conf_t *clcf, |
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345 u_char *file, ngx_err_t err) |
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346 { |
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347 if (err == NGX_EACCES) { |
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348 ngx_log_error(NGX_LOG_ERR, r->connection->log, err, |
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349 "\"%s\" is forbidden", file); |
| 577 | 350 |
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351 return NGX_HTTP_FORBIDDEN; |
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352 } |
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353 |
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354 if (clcf->log_not_found) { |
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355 ngx_log_error(NGX_LOG_ERR, r->connection->log, err, |
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356 "\"%s\" is not found", file); |
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357 } |
| 509 | 358 |
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359 return NGX_HTTP_NOT_FOUND; |
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360 } |
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361 |
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362 |
| 509 | 363 static void * |
| 364 ngx_http_index_create_loc_conf(ngx_conf_t *cf) | |
| 365 { | |
| 366 ngx_http_index_loc_conf_t *conf; | |
| 367 | |
| 368 conf = ngx_palloc(cf->pool, sizeof(ngx_http_index_loc_conf_t)); | |
| 369 if (conf == NULL) { | |
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370 return NULL; |
| 509 | 371 } |
| 372 | |
| 373 conf->indices = NULL; | |
| 681 | 374 conf->max_index_len = 0; |
| 509 | 375 |
| 376 return conf; | |
| 377 } | |
| 378 | |
| 379 | |
| 380 static char * | |
| 381 ngx_http_index_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child) | |
| 382 { | |
| 383 ngx_http_index_loc_conf_t *prev = parent; | |
| 384 ngx_http_index_loc_conf_t *conf = child; | |
| 385 | |
| 386 ngx_http_index_t *index; | |
| 387 | |
| 388 if (conf->indices == NULL) { | |
| 389 conf->indices = prev->indices; | |
| 390 conf->max_index_len = prev->max_index_len; | |
| 391 } | |
| 392 | |
| 393 if (conf->indices == NULL) { | |
| 394 conf->indices = ngx_array_create(cf->pool, 1, sizeof(ngx_http_index_t)); | |
| 395 if (conf->indices == NULL) { | |
| 396 return NGX_CONF_ERROR; | |
| 397 } | |
| 398 | |
| 399 index = ngx_array_push(conf->indices); | |
| 400 if (index == NULL) { | |
| 401 return NGX_CONF_ERROR; | |
| 402 } | |
| 403 | |
| 404 index->name.len = sizeof(NGX_HTTP_DEFAULT_INDEX); | |
| 405 index->name.data = (u_char *) NGX_HTTP_DEFAULT_INDEX; | |
| 406 index->lengths = NULL; | |
| 407 index->values = NULL; | |
| 408 | |
| 409 conf->max_index_len = sizeof(NGX_HTTP_DEFAULT_INDEX); | |
| 410 | |
| 411 return NGX_CONF_OK; | |
| 412 } | |
| 413 | |
| 414 return NGX_CONF_OK; | |
| 415 } | |
| 416 | |
| 417 | |
| 681 | 418 static ngx_int_t |
| 419 ngx_http_index_init(ngx_conf_t *cf) | |
| 420 { | |
| 421 ngx_http_handler_pt *h; | |
| 422 ngx_http_core_main_conf_t *cmcf; | |
| 423 | |
| 424 cmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_core_module); | |
| 425 | |
| 426 h = ngx_array_push(&cmcf->phases[NGX_HTTP_CONTENT_PHASE].handlers); | |
| 427 if (h == NULL) { | |
| 428 return NGX_ERROR; | |
| 429 } | |
| 430 | |
| 431 *h = ngx_http_index_handler; | |
| 432 | |
| 433 return NGX_OK; | |
| 434 } | |
| 435 | |
| 436 | |
| 509 | 437 /* TODO: warn about duplicate indices */ |
| 438 | |
| 439 static char * | |
| 440 ngx_http_index_set_index(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
| 441 { | |
| 442 ngx_http_index_loc_conf_t *ilcf = conf; | |
| 443 | |
| 681 | 444 ngx_str_t *value; |
| 509 | 445 ngx_uint_t i, n; |
| 446 ngx_http_index_t *index; | |
| 447 ngx_http_script_compile_t sc; | |
| 448 | |
| 449 if (ilcf->indices == NULL) { | |
| 450 ilcf->indices = ngx_array_create(cf->pool, 2, sizeof(ngx_http_index_t)); | |
| 451 if (ilcf->indices == NULL) { | |
| 452 return NGX_CONF_ERROR; | |
| 453 } | |
| 454 } | |
| 455 | |
| 456 value = cf->args->elts; | |
| 457 | |
| 458 for (i = 1; i < cf->args->nelts; i++) { | |
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459 |
| 509 | 460 if (value[i].data[0] == '/' && i != cf->args->nelts - 1) { |
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461 ngx_conf_log_error(NGX_LOG_WARN, cf, 0, |
| 509 | 462 "only the last index in \"index\" directive " |
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463 "should be absolute"); |
| 509 | 464 } |
| 465 | |
| 466 if (value[i].len == 0) { | |
| 467 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
| 468 "index \"%V\" in \"index\" directive is invalid", | |
| 469 &value[1]); | |
| 470 return NGX_CONF_ERROR; | |
| 471 } | |
| 472 | |
| 473 index = ngx_array_push(ilcf->indices); | |
| 474 if (index == NULL) { | |
| 475 return NGX_CONF_ERROR; | |
| 476 } | |
| 477 | |
| 478 index->name.len = value[i].len; | |
| 479 index->name.data = value[i].data; | |
| 480 index->lengths = NULL; | |
| 481 index->values = NULL; | |
| 482 | |
| 483 n = ngx_http_script_variables_count(&value[i]); | |
| 484 | |
| 485 if (n == 0) { | |
| 681 | 486 if (ilcf->max_index_len < index->name.len) { |
| 509 | 487 ilcf->max_index_len = index->name.len; |
| 488 } | |
| 489 | |
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490 if (index->name.data[0] == '/') { |
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491 continue; |
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492 } |
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493 |
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494 /* include the terminating '\0' to the length to use ngx_memcpy() */ |
| 557 | 495 index->name.len++; |
| 496 | |
| 509 | 497 continue; |
| 498 } | |
| 499 | |
| 500 ngx_memzero(&sc, sizeof(ngx_http_script_compile_t)); | |
| 501 | |
| 502 sc.cf = cf; | |
| 503 sc.source = &value[i]; | |
| 504 sc.lengths = &index->lengths; | |
| 505 sc.values = &index->values; | |
| 506 sc.variables = n; | |
| 507 sc.complete_lengths = 1; | |
| 508 sc.complete_values = 1; | |
| 509 | |
| 510 if (ngx_http_script_compile(&sc) != NGX_OK) { | |
| 511 return NGX_CONF_ERROR; | |
| 512 } | |
| 513 } | |
| 514 | |
| 515 return NGX_CONF_OK; | |
| 516 } |