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0
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1
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 */
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5
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6
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7 #include <ngx_config.h>
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8 #include <ngx_core.h>
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9 #include <ngx_http.h>
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464
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10 #include <ngx_md5.h>
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0
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11
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12
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464
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13 static ngx_int_t ngx_http_file_cache_exists(ngx_http_request_t *r,
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14 ngx_http_file_cache_t *cache);
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15 static ngx_http_file_cache_node_t *
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16 ngx_http_file_cache_lookup(ngx_http_file_cache_t *cache, u_char *key);
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17 static void ngx_http_file_cache_rbtree_insert_value(ngx_rbtree_node_t *temp,
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18 ngx_rbtree_node_t *node, ngx_rbtree_node_t *sentinel);
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19 static void ngx_http_file_cache_cleanup(void *data);
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20 static time_t ngx_http_file_cache_expire(ngx_http_file_cache_t *cache,
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21 ngx_uint_t force);
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22 static ngx_int_t ngx_http_file_cache_clean_noop(ngx_tree_ctx_t *ctx,
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23 ngx_str_t *path);
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24 static ngx_int_t ngx_http_file_cache_clean_file(ngx_tree_ctx_t *ctx,
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25 ngx_str_t *path);
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0
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26
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27
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464
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28 static u_char ngx_http_file_cache_key[] = { LF, 'K', 'E', 'Y', ':', ' ' };
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0
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29
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30
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464
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31 static ngx_int_t
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32 ngx_http_file_cache_init(ngx_shm_zone_t *shm_zone, void *data)
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0
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33 {
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464
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34 ngx_http_file_cache_t *ocache = data;
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0
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35
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464
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36 ngx_rbtree_node_t *sentinel;
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37 ngx_http_file_cache_t *cache;
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0
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38
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464
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39 cache = shm_zone->data;
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0
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40
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464
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41 if (ocache) {
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42 if (ngx_strcmp(cache->path->name.data, ocache->path->name.data) != 0) {
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43 ngx_log_error(NGX_LOG_EMERG, shm_zone->shm.log, 0,
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44 "cache \"%V\" uses the \"%V\" cache path "
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45 "while previously it used the \"%V\" cache path",
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46 &shm_zone->name, &cache->path->name,
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47 &ocache->path->name);
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0
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48
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49 return NGX_ERROR;
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50 }
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51
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464
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52 cache->rbtree = ocache->rbtree;
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53 cache->queue = ocache->queue;
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54 cache->shpool = ocache->shpool;
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55 cache->created = ocache->created;
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56
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57 return NGX_OK;
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58 }
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59
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60 cache->shpool = (ngx_slab_pool_t *) shm_zone->shm.addr;
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61
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62 cache->rbtree = ngx_slab_alloc(cache->shpool, sizeof(ngx_rbtree_t));
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63 if (cache->rbtree == NULL) {
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64 return NGX_ERROR;
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65 }
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66
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67 sentinel = ngx_slab_alloc(cache->shpool, sizeof(ngx_rbtree_node_t));
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68 if (sentinel == NULL) {
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69 return NGX_ERROR;
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70 }
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71
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72 ngx_rbtree_init(cache->rbtree, sentinel,
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73 ngx_http_file_cache_rbtree_insert_value);
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74
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75 cache->queue = ngx_slab_alloc(cache->shpool, sizeof(ngx_queue_t));
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76 if (cache->queue == NULL) {
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77 return NGX_ERROR;
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78 }
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79
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80 ngx_queue_init(cache->queue);
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81
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82 cache->created = ngx_time();
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83
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84 return NGX_OK;
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85 }
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86
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87
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88 void
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89 ngx_http_file_cache_create_key(ngx_http_request_t *r)
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90 {
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91 size_t len;
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92 ngx_str_t *key;
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93 ngx_uint_t i;
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94 ngx_md5_t md5;
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95 ngx_http_cache_t *c;
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96
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97 c = r->cache;
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98
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99 len = 0;
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100
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101 ngx_crc32_init(c->crc32);
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102 ngx_md5_init(&md5);
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103
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104 key = c->keys.elts;
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105 for (i = 0; i < c->keys.nelts; i++) {
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106 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
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107 "http cache key: \"%V\"", &key[i]);
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108
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109 len += key[i].len;
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110
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111 ngx_crc32_update(&c->crc32, key[i].data, key[i].len);
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112 ngx_md5_update(&md5, key[i].data, key[i].len);
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113 }
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114
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115 c->header_start = sizeof(ngx_http_file_cache_header_t)
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116 + sizeof(ngx_http_file_cache_key) + len + 1;
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117
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118 ngx_crc32_final(c->crc32);
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119 ngx_md5_final(c->key, &md5);
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120 }
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121
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122
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123 ngx_int_t
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124 ngx_http_file_cache_open(ngx_http_request_t *r)
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125 {
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126 u_char *p;
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127 time_t now;
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128 ssize_t n;
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129 ngx_int_t rc, rv;
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130 ngx_uint_t cold, test;
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131 ngx_path_t *path;
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132 ngx_http_cache_t *c;
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133 ngx_pool_cleanup_t *cln;
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134 ngx_open_file_info_t of;
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135 ngx_http_file_cache_t *cache;
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136 ngx_http_core_loc_conf_t *clcf;
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137 ngx_http_file_cache_header_t *h;
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138
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139 c = r->cache;
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140 cache = c->file_cache;
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141
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142 cln = ngx_pool_cleanup_add(r->pool, 0);
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143 if (cln == NULL) {
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144 return NGX_ERROR;
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145 }
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146
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147 rc = ngx_http_file_cache_exists(r, cache);
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148
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149 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
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150 "http file cache exists: %i u:%ui e:%d",
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151 rc, c->uses, c->exists);
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152
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153 if (rc == NGX_ERROR) {
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154 return rc;
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155 }
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156
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157 cln->handler = ngx_http_file_cache_cleanup;
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158 cln->data = c;
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159
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160 if (rc == NGX_AGAIN) {
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161 return rc;
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162 }
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163
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164 now = ngx_time();
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165
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166 cold = (now - cache->created < cache->inactive) ? 1 : 0;
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167
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168 if (rc == NGX_OK) {
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169
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170 if (c->error) {
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171 return c->error;
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172 }
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173
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174 c->temp_file = 1;
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175 test = c->exists ? 1 : 0;
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176 rv = NGX_DECLINED;
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177
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178 } else { /* rc == NGX_DECLINED */
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179
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180 if (c->min_uses > 1) {
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181
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182 if (!cold) {
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183 return NGX_AGAIN;
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0
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184 }
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185
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464
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186 test = 1;
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187 rv = NGX_AGAIN;
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188
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189 } else {
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190 c->temp_file = 1;
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191 test = cold ? 1 : 0;
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192 rv = NGX_DECLINED;
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0
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193 }
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194 }
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195
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464
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196 path = cache->path;
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197
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198 c->file.name.len = path->name.len + 1 + path->len
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199 + 2 * NGX_HTTP_CACHE_KEY_LEN;
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200
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201 c->file.name.data = ngx_pnalloc(r->pool, c->file.name.len + 1);
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202 if (c->file.name.data == NULL) {
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203 return NGX_ERROR;
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204 }
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205
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206 ngx_memcpy(c->file.name.data, path->name.data, path->name.len);
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207
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208 p = c->file.name.data + path->name.len + 1 + path->len;
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209 p = ngx_hex_dump(p, c->key, NGX_HTTP_CACHE_KEY_LEN);
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210 *p = '\0';
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211
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212 ngx_create_hashed_filename(path, c->file.name.data, c->file.name.len);
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213
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214 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, ngx_cycle->log, 0,
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215 "cache file: \"%s\"", c->file.name.data);
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216
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217 if (!test) {
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218 return NGX_DECLINED;
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219 }
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220
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221 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
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222
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223 ngx_memzero(&of, sizeof(ngx_open_file_info_t));
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0
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224
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464
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225 of.uniq = c->uniq;
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226 of.valid = clcf->open_file_cache_valid;
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227 of.min_uses = clcf->open_file_cache_min_uses;
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228 of.events = clcf->open_file_cache_events;
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229 of.directio = NGX_OPEN_FILE_DIRECTIO_OFF;
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230
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231 if (ngx_open_cached_file(clcf->open_file_cache, &c->file.name, &of, r->pool)
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232 != NGX_OK)
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233 {
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234 switch (of.err) {
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235
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236 case 0:
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237 return NGX_ERROR;
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238
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239 case NGX_ENOENT:
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240 case NGX_ENOTDIR:
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241 return rv;
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242
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243 default:
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244 ngx_log_error(NGX_LOG_CRIT, r->connection->log, of.err,
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245 ngx_open_file_n " \"%s\" failed", c->file.name.data);
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246 return NGX_ERROR;
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247 }
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248 }
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249
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250 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
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251 "http file cache fd: %d", of.fd);
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252
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253 c->file.fd = of.fd;
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254
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255 c->buf = ngx_create_temp_buf(r->pool, c->body_start);
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256 if (c->buf == NULL) {
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257 return NGX_ERROR;
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258 }
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259
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260 n = ngx_read_file(&c->file, c->buf->pos, c->body_start, 0);
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261
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262 if (n == NGX_ERROR) {
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0
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263 return n;
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264 }
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265
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464
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266 if ((size_t) n <= c->header_start) {
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267 ngx_log_error(NGX_LOG_CRIT, r->connection->log, 0,
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26
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268 "cache file \"%s\" is too small", c->file.name.data);
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0
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269 return NGX_ERROR;
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270 }
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271
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464
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272 h = (ngx_http_file_cache_header_t *) c->buf->pos;
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0
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273
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464
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274 if (h->crc32 != c->crc32 || (size_t) h->header_start != c->header_start) {
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275 ngx_log_error(NGX_LOG_CRIT, r->connection->log, 0,
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276 "cache file \"%s\" has md5 collision", c->file.name.data);
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0
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277 return NGX_DECLINED;
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278 }
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279
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464
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280 c->buf->last += n;
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26
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281
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464
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282 c->valid_sec = h->valid_sec;
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283 c->last_modified = h->last_modified;
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284 c->date = h->date;
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285 c->valid_msec = h->valid_msec;
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286 c->length = of.size;
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287 c->body_start = h->body_start;
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26
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288
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464
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289 r->cached = 1;
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290
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291 if (cold) {
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292
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293 ngx_shmtx_lock(&cache->shpool->mutex);
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26
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294
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464
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295 c->node->uses = c->min_uses;
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296 c->node->body_start = c->body_start;
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297 c->node->exists = 1;
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298
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299 ngx_shmtx_unlock(&cache->shpool->mutex);
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0
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300 }
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301
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464
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302 if (c->valid_sec < now) {
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0
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303
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464
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304 c->uses = c->min_uses;
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0
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305
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464
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306 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
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307 "http file cache expired: %T %T", c->valid_sec, now);
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308
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0
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309 return NGX_HTTP_CACHE_STALE;
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310 }
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311
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312 /* TODO: NGX_HTTP_CACHE_AGED */
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313
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464
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314 return NGX_OK;
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315 }
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316
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317
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318 static ngx_int_t
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319 ngx_http_file_cache_exists(ngx_http_request_t *r, ngx_http_file_cache_t *cache)
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320 {
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321 ngx_int_t rc;
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322 ngx_http_file_cache_node_t *fcn;
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323
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324 ngx_shmtx_lock(&cache->shpool->mutex);
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325
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326 fcn = ngx_http_file_cache_lookup(cache, r->cache->key);
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327
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328 if (fcn) {
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329 ngx_queue_remove(&fcn->queue);
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330
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331 if (fcn->error) {
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332
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333 if (fcn->valid_sec < ngx_time()) {
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334 goto renew;
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335 }
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336
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337 rc = NGX_OK;
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338
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339 goto done;
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340 }
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341
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342 fcn->uses++;
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343 fcn->count++;
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344
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|
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345 if (fcn->exists) {
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346
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|
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347 r->cache->exists = fcn->exists;
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348 r->cache->body_start = fcn->body_start;
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349
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350 rc = NGX_OK;
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351
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352 goto done;
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353 }
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354
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355 if (fcn->uses >= r->cache->min_uses) {
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356
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357 r->cache->exists = fcn->exists;
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358
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359 if (fcn->body_start) {
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360 r->cache->body_start = fcn->body_start;
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361 }
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362
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363 rc = NGX_OK;
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364
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365 } else {
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366 rc = NGX_AGAIN;
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367 }
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368
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369 goto done;
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370 }
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371
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372 fcn = ngx_slab_alloc_locked(cache->shpool,
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373 sizeof(ngx_http_file_cache_node_t));
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374 if (fcn == NULL) {
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375 ngx_shmtx_unlock(&cache->shpool->mutex);
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376
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377 (void) ngx_http_file_cache_expire(cache, 1);
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378
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379 ngx_shmtx_lock(&cache->shpool->mutex);
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380
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381 fcn = ngx_slab_alloc_locked(cache->shpool,
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382 sizeof(ngx_http_file_cache_node_t));
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383 if (fcn == NULL) {
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384 rc = NGX_ERROR;
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385 goto failed;
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386 }
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387 }
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388
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389 ngx_memcpy((u_char *) &fcn->node.key, r->cache->key,
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390 sizeof(ngx_rbtree_key_t));
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391
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392 ngx_memcpy(fcn->key, &r->cache->key[sizeof(ngx_rbtree_key_t)],
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393 NGX_HTTP_CACHE_KEY_LEN - sizeof(ngx_rbtree_key_t));
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394
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395 ngx_rbtree_insert(cache->rbtree, &fcn->node);
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396
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397 renew:
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398
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399 rc = NGX_DECLINED;
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400
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|
|
401 fcn->uses = 1;
|
|
|
402 fcn->count = 1;
|
|
|
403 fcn->valid_msec = 0;
|
|
|
404 fcn->error = 0;
|
|
|
405 fcn->exists = 0;
|
|
|
406 fcn->valid_sec = 0;
|
|
|
407 fcn->uniq = 0;
|
|
|
408 fcn->body_start = 0;
|
|
|
409
|
|
|
410 done:
|
|
|
411
|
|
|
412 fcn->expire = ngx_time() + cache->inactive;
|
|
|
413
|
|
|
414 ngx_queue_insert_head(cache->queue, &fcn->queue);
|
|
|
415
|
|
|
416 r->cache->uniq = fcn->uniq;
|
|
|
417 r->cache->uses = fcn->uses;
|
|
|
418 r->cache->error = fcn->error;
|
|
|
419 r->cache->node = fcn;
|
|
|
420
|
|
|
421 failed:
|
|
|
422
|
|
|
423 ngx_shmtx_unlock(&cache->shpool->mutex);
|
|
|
424
|
|
|
425 return rc;
|
|
|
426 }
|
|
|
427
|
|
|
428
|
|
|
429 static ngx_http_file_cache_node_t *
|
|
|
430 ngx_http_file_cache_lookup(ngx_http_file_cache_t *cache, u_char *key)
|
|
|
431 {
|
|
|
432 ngx_int_t rc;
|
|
|
433 ngx_rbtree_key_t node_key;
|
|
|
434 ngx_rbtree_node_t *node, *sentinel;
|
|
|
435 ngx_http_file_cache_node_t *fcn;
|
|
|
436
|
|
|
437 ngx_memcpy((u_char *) &node_key, key, sizeof(ngx_rbtree_key_t));
|
|
|
438
|
|
|
439 node = cache->rbtree->root;
|
|
|
440 sentinel = cache->rbtree->sentinel;
|
|
|
441
|
|
|
442 while (node != sentinel) {
|
|
|
443
|
|
|
444 if (node_key < node->key) {
|
|
|
445 node = node->left;
|
|
|
446 continue;
|
|
|
447 }
|
|
|
448
|
|
|
449 if (node_key > node->key) {
|
|
|
450 node = node->right;
|
|
|
451 continue;
|
|
|
452 }
|
|
|
453
|
|
|
454 /* node_key == node->key */
|
|
|
455
|
|
|
456 do {
|
|
|
457 fcn = (ngx_http_file_cache_node_t *) node;
|
|
|
458
|
|
|
459 rc = ngx_memcmp(&key[sizeof(ngx_rbtree_key_t)], fcn->key,
|
|
|
460 NGX_HTTP_CACHE_KEY_LEN - sizeof(ngx_rbtree_key_t));
|
|
|
461
|
|
|
462 if (rc == 0) {
|
|
|
463 return fcn;
|
|
|
464 }
|
|
|
465
|
|
|
466 node = (rc < 0) ? node->left : node->right;
|
|
|
467
|
|
|
468 } while (node != sentinel && node_key == node->key);
|
|
|
469
|
|
|
470 break;
|
|
|
471 }
|
|
|
472
|
|
|
473 /* not found */
|
|
|
474
|
|
|
475 return NULL;
|
|
|
476 }
|
|
|
477
|
|
|
478
|
|
|
479 static void
|
|
|
480 ngx_http_file_cache_rbtree_insert_value(ngx_rbtree_node_t *temp,
|
|
|
481 ngx_rbtree_node_t *node, ngx_rbtree_node_t *sentinel)
|
|
|
482 {
|
|
|
483 ngx_rbtree_node_t **p;
|
|
|
484 ngx_http_file_cache_node_t *cn, *cnt;
|
|
|
485
|
|
|
486 for ( ;; ) {
|
|
|
487
|
|
|
488 if (node->key < temp->key) {
|
|
|
489
|
|
|
490 p = &temp->left;
|
|
|
491
|
|
|
492 } else if (node->key > temp->key) {
|
|
|
493
|
|
|
494 p = &temp->right;
|
|
|
495
|
|
|
496 } else { /* node->key == temp->key */
|
|
|
497
|
|
|
498 cn = (ngx_http_file_cache_node_t *) node;
|
|
|
499 cnt = (ngx_http_file_cache_node_t *) temp;
|
|
|
500
|
|
|
501 p = (ngx_memcmp(cn->key, cnt->key,
|
|
|
502 NGX_HTTP_CACHE_KEY_LEN - sizeof(ngx_rbtree_key_t))
|
|
|
503 < 0)
|
|
|
504 ? &temp->left : &temp->right;
|
|
|
505 }
|
|
|
506
|
|
|
507 if (*p == sentinel) {
|
|
|
508 break;
|
|
|
509 }
|
|
|
510
|
|
|
511 temp = *p;
|
|
|
512 }
|
|
|
513
|
|
|
514 *p = node;
|
|
|
515 node->parent = temp;
|
|
|
516 node->left = sentinel;
|
|
|
517 node->right = sentinel;
|
|
|
518 ngx_rbt_red(node);
|
|
|
519 }
|
|
|
520
|
|
|
521
|
|
|
522 void
|
|
|
523 ngx_http_file_cache_set_header(ngx_http_request_t *r, u_char *buf)
|
|
|
524 {
|
|
|
525 ngx_http_file_cache_header_t *h = (ngx_http_file_cache_header_t *) buf;
|
|
|
526
|
|
|
527 u_char *p;
|
|
|
528 ngx_str_t *key;
|
|
|
529 ngx_uint_t i;
|
|
|
530 ngx_http_cache_t *c;
|
|
|
531
|
|
|
532 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
533 "http file cache set header");
|
|
|
534
|
|
|
535 c = r->cache;
|
|
|
536
|
|
|
537 h->valid_sec = c->valid_sec;
|
|
|
538 h->last_modified = c->last_modified;
|
|
|
539 h->date = c->date;
|
|
|
540 h->crc32 = c->crc32;
|
|
|
541 h->valid_msec = (u_short) c->valid_msec;
|
|
|
542 h->header_start = (u_short) c->header_start;
|
|
|
543 h->body_start = (u_short) c->body_start;
|
|
|
544
|
|
|
545 p = buf + sizeof(ngx_http_file_cache_header_t);
|
|
|
546
|
|
|
547 p = ngx_cpymem(p, ngx_http_file_cache_key, sizeof(ngx_http_file_cache_key));
|
|
|
548
|
|
|
549 key = c->keys.elts;
|
|
|
550 for (i = 0; i < c->keys.nelts; i++) {
|
|
|
551 p = ngx_copy(p, key[i].data, key[i].len);
|
|
|
552 }
|
|
|
553
|
|
|
554 *p = LF;
|
|
|
555 }
|
|
|
556
|
|
|
557
|
|
|
558 void
|
|
|
559 ngx_http_file_cache_update(ngx_http_request_t *r, ngx_temp_file_t *tf)
|
|
|
560 {
|
|
|
561 ngx_int_t rc;
|
|
|
562 ngx_file_uniq_t uniq;
|
|
|
563 ngx_file_info_t fi;
|
|
|
564 ngx_http_cache_t *c;
|
|
|
565 ngx_ext_rename_file_t ext;
|
|
|
566 ngx_http_file_cache_t *cache;
|
|
|
567
|
|
|
568 c = r->cache;
|
|
|
569
|
|
|
570 if (c->updated) {
|
|
|
571 return;
|
|
|
572 }
|
|
|
573
|
|
|
574 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
575 "http file cache update");
|
|
|
576
|
|
|
577 c->updated = 1;
|
|
|
578
|
|
|
579 cache = c->file_cache;
|
|
|
580
|
|
|
581 uniq = 0;
|
|
|
582
|
|
|
583 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
584 "http file cache rename: \"%s\" to \"%s\"",
|
|
|
585 tf->file.name.data, c->file.name.data);
|
|
|
586
|
|
|
587 ext.access = NGX_FILE_OWNER_ACCESS;
|
|
|
588 ext.path_access = NGX_FILE_OWNER_ACCESS;
|
|
|
589 ext.time = -1;
|
|
|
590 ext.create_path = 1;
|
|
|
591 ext.delete_file = 1;
|
|
|
592 ext.log_rename_error = 1;
|
|
|
593 ext.log = r->connection->log;
|
|
|
594
|
|
|
595 rc = ngx_ext_rename_file(&tf->file.name, &c->file.name, &ext);
|
|
|
596
|
|
|
597 if (rc == NGX_OK) {
|
|
|
598
|
|
|
599 if (ngx_fd_info(tf->file.fd, &fi) == NGX_FILE_ERROR) {
|
|
|
600 ngx_log_error(NGX_LOG_CRIT, r->connection->log, ngx_errno,
|
|
|
601 ngx_fd_info_n " \"%s\" failed", tf->file.name.data);
|
|
|
602
|
|
|
603 rc = NGX_ERROR;
|
|
|
604
|
|
|
605 } else {
|
|
|
606 uniq = ngx_file_uniq(&fi);
|
|
|
607 }
|
|
|
608 }
|
|
|
609
|
|
|
610 ngx_shmtx_lock(&cache->shpool->mutex);
|
|
|
611
|
|
|
612 c->node->count--;
|
|
|
613 c->node->uniq = uniq;
|
|
|
614 c->node->body_start = c->body_start;
|
|
|
615
|
|
|
616 if (rc == NGX_OK) {
|
|
|
617 c->node->exists = 1;
|
|
|
618 }
|
|
|
619
|
|
|
620 ngx_shmtx_unlock(&cache->shpool->mutex);
|
|
|
621 }
|
|
|
622
|
|
|
623
|
|
|
624 ngx_int_t
|
|
|
625 ngx_http_cache_send(ngx_http_request_t *r)
|
|
|
626 {
|
|
|
627 ngx_int_t rc;
|
|
|
628 ngx_buf_t *b;
|
|
|
629 ngx_chain_t out;
|
|
|
630 ngx_http_cache_t *c;
|
|
|
631
|
|
|
632 c = r->cache;
|
|
|
633
|
|
|
634 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
635 "http file cache send: %s", c->file.name.data);
|
|
|
636
|
|
|
637 /* we need to allocate all before the header would be sent */
|
|
|
638
|
|
|
639 b = ngx_pcalloc(r->pool, sizeof(ngx_buf_t));
|
|
|
640 if (b == NULL) {
|
|
|
641 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
642 }
|
|
|
643
|
|
|
644 b->file = ngx_pcalloc(r->pool, sizeof(ngx_file_t));
|
|
|
645 if (b->file == NULL) {
|
|
|
646 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
647 }
|
|
|
648
|
|
|
649 rc = ngx_http_send_header(r);
|
|
|
650
|
|
|
651 if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) {
|
|
|
652 return rc;
|
|
|
653 }
|
|
|
654
|
|
|
655 b->file_pos = c->body_start;
|
|
|
656 b->file_last = c->length;
|
|
|
657
|
|
|
658 b->in_file = (c->length - c->body_start) ? 1: 0;
|
|
|
659 b->last_buf = (r == r->main) ? 1: 0;
|
|
|
660 b->last_in_chain = 1;
|
|
|
661
|
|
|
662 b->file->fd = c->file.fd;
|
|
|
663 b->file->name = c->file.name;
|
|
|
664 b->file->log = r->connection->log;
|
|
|
665
|
|
|
666 out.buf = b;
|
|
|
667 out.next = NULL;
|
|
|
668
|
|
|
669 return ngx_http_output_filter(r, &out);
|
|
|
670 }
|
|
|
671
|
|
|
672
|
|
|
673 void
|
|
|
674 ngx_http_file_cache_free(ngx_http_request_t *r, ngx_temp_file_t *tf)
|
|
|
675 {
|
|
|
676 ngx_http_cache_t *c;
|
|
|
677 ngx_http_file_cache_t *cache;
|
|
|
678
|
|
|
679 c = r->cache;
|
|
|
680
|
|
|
681 if (c->updated) {
|
|
|
682 return;
|
|
|
683 }
|
|
|
684
|
|
|
685 c->updated = 1;
|
|
|
686
|
|
|
687 cache = c->file_cache;
|
|
|
688
|
|
|
689 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
690 "http file cache free");
|
|
|
691
|
|
|
692 ngx_shmtx_lock(&cache->shpool->mutex);
|
|
|
693
|
|
|
694 c->node->count--;
|
|
|
695
|
|
|
696 if (c->error) {
|
|
|
697 c->node->valid_sec = c->valid_sec;
|
|
|
698 c->node->valid_msec = c->valid_msec;
|
|
|
699 c->node->error = c->error;
|
|
|
700 }
|
|
|
701
|
|
|
702 ngx_shmtx_unlock(&cache->shpool->mutex);
|
|
|
703
|
|
|
704 if (c->temp_file) {
|
|
|
705 if (tf && tf->file.fd != NGX_INVALID_FILE) {
|
|
|
706 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
707 "http file cache incomplete: \"%s\"",
|
|
|
708 tf->file.name.data);
|
|
|
709
|
|
|
710 if (ngx_delete_file(tf->file.name.data) == NGX_FILE_ERROR) {
|
|
|
711 ngx_log_error(NGX_LOG_CRIT, r->connection->log, ngx_errno,
|
|
|
712 ngx_delete_file_n " \"%s\" failed",
|
|
|
713 tf->file.name.data);
|
|
|
714 }
|
|
|
715 }
|
|
|
716 }
|
|
|
717 }
|
|
|
718
|
|
|
719
|
|
|
720 static void
|
|
|
721 ngx_http_file_cache_cleanup(void *data)
|
|
|
722 {
|
|
|
723 ngx_http_cache_t *c = data;
|
|
|
724
|
|
|
725 ngx_http_file_cache_t *cache;
|
|
|
726
|
|
|
727 if (c->updated) {
|
|
|
728 return;
|
|
|
729 }
|
|
|
730
|
|
|
731 c->updated = 1;
|
|
|
732
|
|
|
733 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->file.log, 0,
|
|
|
734 "http file cache cleanup");
|
|
|
735
|
|
|
736 if (c->error) {
|
|
|
737 return;
|
|
|
738 }
|
|
|
739
|
|
|
740 cache = c->file_cache;
|
|
|
741
|
|
|
742 ngx_shmtx_lock(&cache->shpool->mutex);
|
|
|
743
|
|
|
744 c->node->count--;
|
|
|
745
|
|
|
746 ngx_shmtx_unlock(&cache->shpool->mutex);
|
|
|
747 }
|
|
|
748
|
|
|
749
|
|
|
750 static time_t
|
|
|
751 ngx_http_file_cache_expire(ngx_http_file_cache_t *cache, ngx_uint_t forced)
|
|
|
752 {
|
|
|
753 u_char *name, *p;
|
|
|
754 size_t len;
|
|
|
755 time_t now, wait;
|
|
|
756 ngx_uint_t tries;
|
|
|
757 ngx_path_t *path;
|
|
|
758 ngx_queue_t *q;
|
|
|
759 ngx_http_file_cache_node_t *fcn;
|
|
|
760 u_char key[2 * NGX_HTTP_CACHE_KEY_LEN];
|
|
|
761
|
|
|
762 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, ngx_cycle->log, 0,
|
|
|
763 "http file cache expire");
|
|
|
764
|
|
|
765 path = cache->path;
|
|
|
766 len = path->name.len + 1 + path->len + 2 * NGX_HTTP_CACHE_KEY_LEN;
|
|
|
767
|
|
|
768 now = ngx_time();
|
|
|
769
|
|
|
770 ngx_shmtx_lock(&cache->shpool->mutex);
|
|
|
771
|
|
|
772 tries = 0;
|
|
|
773
|
|
|
774 for ( ;; ) {
|
|
|
775
|
|
|
776 if (ngx_queue_empty(cache->queue)) {
|
|
|
777 wait = cache->inactive;
|
|
|
778 break;
|
|
|
779 }
|
|
|
780
|
|
|
781 q = ngx_queue_last(cache->queue);
|
|
|
782
|
|
|
783 fcn = ngx_queue_data(q, ngx_http_file_cache_node_t, queue);
|
|
|
784
|
|
|
785 if (!forced) {
|
|
|
786 wait = fcn->expire - now;
|
|
|
787
|
|
|
788 if (wait > 0) {
|
|
|
789 break;
|
|
|
790 }
|
|
|
791 }
|
|
|
792
|
|
|
793 ngx_log_debug6(NGX_LOG_DEBUG_HTTP, ngx_cycle->log, 0,
|
|
|
794 "http file cache expire: #%d %d %02xd%02xd%02xd%02xd",
|
|
|
795 fcn->count, fcn->exists,
|
|
|
796 fcn->key[0], fcn->key[1], fcn->key[2], fcn->key[3]);
|
|
|
797
|
|
|
798 if (fcn->count) {
|
|
|
799
|
|
|
800 if (!forced) {
|
|
|
801
|
|
|
802 p = ngx_hex_dump(key, (u_char *) &fcn->node.key,
|
|
|
803 sizeof(ngx_rbtree_key_t));
|
|
|
804 (void) ngx_hex_dump(p, fcn->key,
|
|
|
805 NGX_HTTP_CACHE_KEY_LEN - sizeof(ngx_rbtree_key_t));
|
|
|
806
|
|
|
807 /*
|
|
|
808 * abnormally exited workers may leave locked cache entries,
|
|
|
809 * and although it may be safe to remove them completely,
|
|
|
810 * we prefer to remove them from inactive queue and rbtree
|
|
|
811 * only, and to allow other leaks
|
|
|
812 */
|
|
|
813
|
|
|
814 ngx_queue_remove(q);
|
|
|
815
|
|
|
816 ngx_rbtree_delete(cache->rbtree, &fcn->node);
|
|
|
817
|
|
|
818 ngx_log_error(NGX_LOG_ALERT, ngx_cycle->log, 0,
|
|
|
819 "ignore long locked inactive cache entry %*s",
|
|
|
820 NGX_HTTP_CACHE_KEY_LEN, key);
|
|
|
821 }
|
|
|
822
|
|
|
823 if (tries++ < 10) {
|
|
|
824 continue;
|
|
|
825 }
|
|
|
826
|
|
|
827 wait = 1;
|
|
|
828 break;
|
|
|
829 }
|
|
|
830
|
|
|
831 forced = 0;
|
|
|
832
|
|
|
833 if (!fcn->exists) {
|
|
|
834
|
|
|
835 ngx_queue_remove(q);
|
|
|
836
|
|
|
837 ngx_rbtree_delete(cache->rbtree, &fcn->node);
|
|
|
838
|
|
|
839 ngx_slab_free_locked(cache->shpool, fcn);
|
|
|
840
|
|
|
841 continue;
|
|
|
842 }
|
|
|
843
|
|
|
844 name = ngx_alloc(len + 1, ngx_cycle->log);
|
|
|
845 if (name == NULL) {
|
|
|
846 wait = 60;
|
|
|
847 break;
|
|
|
848 }
|
|
|
849
|
|
|
850 ngx_memcpy(name, path->name.data, path->name.len);
|
|
|
851
|
|
|
852 p = name + path->name.len + 1 + path->len;
|
|
|
853 p = ngx_hex_dump(p, (u_char *) &fcn->node.key,
|
|
|
854 sizeof(ngx_rbtree_key_t));
|
|
|
855 p = ngx_hex_dump(p, fcn->key,
|
|
|
856 NGX_HTTP_CACHE_KEY_LEN - sizeof(ngx_rbtree_key_t));
|
|
|
857 *p = '\0';
|
|
|
858
|
|
|
859 ngx_queue_remove(q);
|
|
|
860
|
|
|
861 ngx_rbtree_delete(cache->rbtree, &fcn->node);
|
|
|
862
|
|
|
863 ngx_slab_free_locked(cache->shpool, fcn);
|
|
|
864
|
|
|
865 ngx_shmtx_unlock(&cache->shpool->mutex);
|
|
|
866
|
|
|
867 ngx_create_hashed_filename(path, name, len);
|
|
|
868
|
|
|
869 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, ngx_cycle->log, 0,
|
|
|
870 "http file cache expire: \"%s\"", name);
|
|
|
871
|
|
|
872 if (ngx_delete_file(name) == NGX_FILE_ERROR) {
|
|
|
873 ngx_log_error(NGX_LOG_CRIT, ngx_cycle->log, ngx_errno,
|
|
|
874 ngx_delete_file_n " \"%s\" failed", name);
|
|
|
875 }
|
|
|
876
|
|
|
877 ngx_free(name);
|
|
|
878
|
|
|
879 ngx_shmtx_lock(&cache->shpool->mutex);
|
|
|
880 }
|
|
|
881
|
|
|
882 ngx_shmtx_unlock(&cache->shpool->mutex);
|
|
|
883
|
|
|
884 return wait;
|
|
|
885 }
|
|
|
886
|
|
|
887
|
|
|
888 time_t
|
|
|
889 ngx_http_file_cache_cleaner(void *data)
|
|
|
890 {
|
|
|
891 ngx_http_file_cache_t *cache = data;
|
|
|
892
|
|
|
893 time_t now, next;
|
|
|
894 ngx_tree_ctx_t tree;
|
|
|
895
|
|
|
896 now = ngx_time();
|
|
|
897
|
|
|
898 if (now >= cache->next_clean_time) {
|
|
|
899
|
|
|
900 ngx_log_error(NGX_LOG_NOTICE, ngx_cycle->log, 0,
|
|
|
901 "clean unused cache files");
|
|
|
902
|
|
|
903 tree.init_handler = NULL;
|
|
|
904 tree.file_handler = ngx_http_file_cache_clean_file;
|
|
|
905 tree.pre_tree_handler = ngx_http_file_cache_clean_noop;
|
|
|
906 tree.post_tree_handler = ngx_http_file_cache_clean_noop;
|
|
|
907 tree.spec_handler = ngx_http_file_cache_clean_file;
|
|
|
908 tree.data = cache;
|
|
|
909 tree.alloc = 0;
|
|
|
910 tree.log = ngx_cycle->log;
|
|
|
911
|
|
|
912 (void) ngx_walk_tree(&tree, &cache->path->name);
|
|
|
913
|
|
|
914 ngx_time_update(0, 0);
|
|
|
915
|
|
|
916 next = ngx_next_time(cache->clean_time);
|
|
|
917
|
|
|
918 if (next == -1) {
|
|
|
919 ngx_log_error(NGX_LOG_ALERT, ngx_cycle->log, ngx_errno,
|
|
|
920 ngx_next_time_n " failed");
|
|
|
921 return 60;
|
|
|
922 }
|
|
|
923
|
|
|
924 cache->next_clean_time = next;
|
|
|
925 }
|
|
|
926
|
|
|
927 next = ngx_http_file_cache_expire(cache, 0);
|
|
|
928
|
|
|
929 now = ngx_time();
|
|
|
930
|
|
|
931 return (now + next < cache->next_clean_time) ? next:
|
|
|
932 cache->next_clean_time - now;
|
|
|
933 }
|
|
|
934
|
|
|
935
|
|
|
936 static ngx_int_t
|
|
|
937 ngx_http_file_cache_clean_noop(ngx_tree_ctx_t *ctx, ngx_str_t *path)
|
|
|
938 {
|
|
|
939 return NGX_OK;
|
|
|
940 }
|
|
|
941
|
|
|
942
|
|
|
943 static ngx_int_t
|
|
|
944 ngx_http_file_cache_clean_file(ngx_tree_ctx_t *ctx, ngx_str_t *path)
|
|
|
945 {
|
|
|
946 u_char *p, key[2 * NGX_HTTP_CACHE_KEY_LEN];
|
|
|
947 ngx_int_t n;
|
|
|
948 ngx_uint_t i;
|
|
|
949 ngx_http_file_cache_t *cache;
|
|
|
950 ngx_http_file_cache_node_t *node;
|
|
|
951
|
|
|
952 if (path->len < 2 * NGX_HTTP_CACHE_KEY_LEN) {
|
|
|
953 goto clean;
|
|
|
954 }
|
|
|
955
|
|
|
956 p = &path->data[path->len - 2 * NGX_HTTP_CACHE_KEY_LEN];
|
|
|
957
|
|
|
958 for (i = 0; i < NGX_HTTP_CACHE_KEY_LEN; i++) {
|
|
|
959 n = ngx_hextoi(p, 2);
|
|
|
960
|
|
|
961 if (n == NGX_ERROR) {
|
|
|
962 goto clean;
|
|
|
963 }
|
|
|
964
|
|
|
965 p += 2;
|
|
|
966
|
|
|
967 key[i] = (u_char) n;
|
|
|
968 }
|
|
|
969
|
|
|
970 cache = ctx->data;
|
|
|
971
|
|
|
972 ngx_shmtx_lock(&cache->shpool->mutex);
|
|
|
973
|
|
|
974 node = ngx_http_file_cache_lookup(cache, key);
|
|
|
975
|
|
|
976 ngx_shmtx_unlock(&cache->shpool->mutex);
|
|
|
977
|
|
|
978 if (node) {
|
|
|
979 return NGX_OK;
|
|
|
980 }
|
|
|
981
|
|
|
982 clean:
|
|
|
983
|
|
|
984 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, ctx->log, 0,
|
|
|
985 "http file cache clean: \"%s\"", path->data);
|
|
|
986
|
|
|
987 if (ngx_delete_file(path->data) == NGX_FILE_ERROR) {
|
|
|
988 ngx_log_error(NGX_LOG_CRIT, ctx->log, ngx_errno,
|
|
|
989 ngx_delete_file_n " \"%s\" failed", path->data);
|
|
|
990 return NGX_ERROR;
|
|
|
991 }
|
|
26
|
992
|
|
0
|
993 return NGX_OK;
|
|
|
994 }
|
|
|
995
|
|
|
996
|
|
464
|
997 time_t
|
|
|
998 ngx_http_file_cache_valid(ngx_array_t *cache_valid, ngx_uint_t status)
|
|
0
|
999 {
|
|
464
|
1000 ngx_uint_t i;
|
|
|
1001 ngx_http_cache_valid_t *valid;
|
|
0
|
1002
|
|
464
|
1003 valid = cache_valid->elts;
|
|
|
1004 for (i = 0; i < cache_valid->nelts; i++) {
|
|
0
|
1005
|
|
464
|
1006 if (valid[i].status == 0) {
|
|
|
1007 return valid[i].valid;
|
|
0
|
1008 }
|
|
|
1009
|
|
464
|
1010 if (valid[i].status == status) {
|
|
|
1011 return valid[i].valid;
|
|
0
|
1012 }
|
|
464
|
1013 }
|
|
0
|
1014
|
|
464
|
1015 return 0;
|
|
0
|
1016 }
|
|
|
1017
|
|
|
1018
|
|
464
|
1019 char *
|
|
|
1020 ngx_http_file_cache_set_slot(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
1021 {
|
|
|
1022 u_char *last, *p;
|
|
|
1023 time_t inactive, clean_time, next;
|
|
|
1024 ssize_t size;
|
|
|
1025 ngx_str_t s, name, *value;
|
|
|
1026 ngx_uint_t i, n;
|
|
|
1027 ngx_http_file_cache_t *cache;
|
|
|
1028
|
|
|
1029 cache = ngx_pcalloc(cf->pool, sizeof(ngx_http_file_cache_t));
|
|
|
1030 if (cache == NULL) {
|
|
|
1031 return NGX_CONF_ERROR;
|
|
|
1032 }
|
|
|
1033
|
|
|
1034 cache->path = ngx_pcalloc(cf->pool, sizeof(ngx_path_t));
|
|
|
1035 if (cache->path == NULL) {
|
|
|
1036 return NGX_CONF_ERROR;
|
|
|
1037 }
|
|
|
1038
|
|
|
1039 inactive = 600;
|
|
|
1040 clean_time = 5 * 60 * 60;
|
|
|
1041
|
|
|
1042 name.len = 0;
|
|
|
1043 size = 0;
|
|
|
1044
|
|
|
1045 value = cf->args->elts;
|
|
|
1046
|
|
|
1047 cache->path->name = value[1];
|
|
|
1048
|
|
|
1049 if (cache->path->name.data[cache->path->name.len - 1] == '/') {
|
|
|
1050 cache->path->name.len--;
|
|
|
1051 }
|
|
|
1052
|
|
|
1053 if (ngx_conf_full_name(cf->cycle, &cache->path->name, 0) != NGX_OK) {
|
|
|
1054 return NGX_CONF_ERROR;
|
|
|
1055 }
|
|
|
1056
|
|
|
1057 for (i = 2; i < cf->args->nelts; i++) {
|
|
|
1058
|
|
|
1059 if (ngx_strncmp(value[i].data, "levels=", 7) == 0) {
|
|
|
1060
|
|
|
1061 n = 0;
|
|
|
1062 p = value[i].data + 7;
|
|
|
1063 last = value[i].data + value[i].len;
|
|
|
1064
|
|
|
1065 while (p < last) {
|
|
|
1066
|
|
|
1067 if (*p > '0' && *p < '6') {
|
|
|
1068
|
|
|
1069 cache->path->level[n] = *p++ - '0';
|
|
|
1070 cache->path->len += cache->path->level[n] + 1;
|
|
|
1071
|
|
|
1072 if (p == last) {
|
|
|
1073 break;
|
|
|
1074 }
|
|
|
1075
|
|
|
1076 if (*p++ == ':') {
|
|
|
1077
|
|
|
1078 if (n > 2) {
|
|
|
1079 goto invalid_levels;
|
|
|
1080 }
|
|
|
1081
|
|
|
1082 if (cache->path->level[n] == 0) {
|
|
|
1083 goto invalid_levels;
|
|
|
1084 }
|
|
|
1085
|
|
|
1086 n++;
|
|
|
1087
|
|
|
1088 continue;
|
|
|
1089 }
|
|
|
1090 }
|
|
|
1091
|
|
|
1092 goto invalid_levels;
|
|
|
1093 }
|
|
|
1094
|
|
|
1095 if (cache->path->len < 10 + 3) {
|
|
|
1096 continue;
|
|
|
1097 }
|
|
|
1098
|
|
|
1099 invalid_levels:
|
|
|
1100
|
|
|
1101 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
1102 "invalid \"levels\" \"%V\"", &value[i]);
|
|
|
1103 return NGX_CONF_ERROR;
|
|
|
1104 }
|
|
|
1105
|
|
|
1106 if (ngx_strncmp(value[i].data, "keys_zone=", 10) == 0) {
|
|
|
1107
|
|
|
1108 name.data = value[i].data + 10;
|
|
|
1109
|
|
|
1110 p = (u_char *) ngx_strchr(name.data, ':');
|
|
|
1111
|
|
|
1112 if (p) {
|
|
|
1113 name.len = p - name.data;
|
|
|
1114
|
|
|
1115 p++;
|
|
|
1116
|
|
|
1117 s.len = value[i].data + value[i].len - p;
|
|
|
1118 s.data = p;
|
|
|
1119
|
|
|
1120 size = ngx_parse_size(&s);
|
|
|
1121 if (size > 8191) {
|
|
|
1122 continue;
|
|
|
1123 }
|
|
|
1124 }
|
|
|
1125
|
|
|
1126 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
1127 "invalid keys zone size \"%V\"", &value[i]);
|
|
|
1128 return NGX_CONF_ERROR;
|
|
|
1129 }
|
|
|
1130
|
|
|
1131 if (ngx_strncmp(value[i].data, "inactive=", 9) == 0) {
|
|
|
1132
|
|
|
1133 s.len = value[i].len - 9;
|
|
|
1134 s.data = value[i].data + 9;
|
|
|
1135
|
|
|
1136 inactive = ngx_parse_time(&s, 1);
|
|
|
1137 if (inactive < 0) {
|
|
|
1138 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
1139 "invalid inactive value \"%V\"", &value[i]);
|
|
|
1140 return NGX_CONF_ERROR;
|
|
|
1141 }
|
|
|
1142
|
|
|
1143 continue;
|
|
|
1144 }
|
|
|
1145
|
|
|
1146 if (ngx_strncmp(value[i].data, "clean_time=", 11) == 0) {
|
|
|
1147
|
|
|
1148 s.len = value[i].len - 11;
|
|
|
1149 s.data = value[i].data + 11;
|
|
|
1150
|
|
|
1151 clean_time = ngx_parse_time(&s, 1);
|
|
|
1152 if (clean_time < 0 || clean_time > 24 * 60 * 60) {
|
|
|
1153 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
1154 "invalid clean_time value \"%V\"", &value[i]);
|
|
|
1155 return NGX_CONF_ERROR;
|
|
|
1156 }
|
|
|
1157
|
|
|
1158 continue;
|
|
|
1159 }
|
|
|
1160
|
|
|
1161 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
1162 "invalid parameter \"%V\"", &value[i]);
|
|
|
1163 return NGX_CONF_ERROR;
|
|
|
1164 }
|
|
|
1165
|
|
|
1166 if (name.len == 0 || size == 0) {
|
|
|
1167 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
1168 "\"%V\" must have \"keys_zone\" parameter",
|
|
|
1169 &cmd->name);
|
|
|
1170 return NGX_CONF_ERROR;
|
|
|
1171 }
|
|
|
1172
|
|
|
1173 cache->path->cleaner = ngx_http_file_cache_cleaner;
|
|
|
1174 cache->path->data = cache;
|
|
|
1175
|
|
|
1176 if (ngx_add_path(cf, &cache->path) != NGX_OK) {
|
|
|
1177 return NGX_CONF_ERROR;
|
|
|
1178 }
|
|
|
1179
|
|
|
1180 cache->shm_zone = ngx_shared_memory_add(cf, &name, size, cmd->post);
|
|
|
1181 if (cache->shm_zone == NULL) {
|
|
|
1182 return NGX_CONF_ERROR;
|
|
|
1183 }
|
|
|
1184
|
|
|
1185 if (cache->shm_zone->data) {
|
|
|
1186 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
1187 "duplicate zone \"%V\"", &name);
|
|
|
1188 return NGX_CONF_ERROR;
|
|
|
1189 }
|
|
|
1190
|
|
|
1191 next = ngx_next_time(clean_time);
|
|
|
1192
|
|
|
1193 if (next == -1) {
|
|
|
1194 ngx_conf_log_error(NGX_LOG_EMERG, cf, ngx_errno,
|
|
|
1195 ngx_next_time_n " failed");
|
|
|
1196 return NGX_CONF_ERROR;
|
|
|
1197 }
|
|
|
1198
|
|
|
1199 cache->shm_zone->init = ngx_http_file_cache_init;
|
|
|
1200 cache->shm_zone->data = cache;
|
|
|
1201
|
|
|
1202 cache->inactive = inactive;
|
|
|
1203 cache->clean_time = clean_time;
|
|
|
1204 cache->next_clean_time = next;
|
|
|
1205
|
|
|
1206 return NGX_CONF_OK;
|
|
|
1207 }
|
|
26
|
1208
|
|
|
1209
|
|
464
|
1210 char *
|
|
|
1211 ngx_http_file_cache_valid_set_slot(ngx_conf_t *cf, ngx_command_t *cmd,
|
|
|
1212 void *conf)
|
|
0
|
1213 {
|
|
464
|
1214 char *p = conf;
|
|
0
|
1215
|
|
464
|
1216 time_t valid;
|
|
|
1217 ngx_str_t *value;
|
|
|
1218 ngx_uint_t i, n, status;
|
|
|
1219 ngx_array_t **a;
|
|
|
1220 ngx_http_cache_valid_t *v;
|
|
|
1221 static ngx_uint_t statuses[] = { 200, 301, 302 };
|
|
26
|
1222
|
|
464
|
1223 a = (ngx_array_t **) (p + cmd->offset);
|
|
0
|
1224
|
|
464
|
1225 if (*a == NGX_CONF_UNSET_PTR) {
|
|
|
1226 *a = ngx_array_create(cf->pool, 1, sizeof(ngx_http_cache_valid_t));
|
|
|
1227 if (*a == NULL) {
|
|
|
1228 return NGX_CONF_ERROR;
|
|
|
1229 }
|
|
|
1230 }
|
|
0
|
1231
|
|
464
|
1232 value = cf->args->elts;
|
|
|
1233 n = cf->args->nelts - 1;
|
|
0
|
1234
|
|
464
|
1235 valid = ngx_parse_time(&value[n], 1);
|
|
|
1236 if (valid < 0) {
|
|
|
1237 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
1238 "invalid time value \"%V\"", &value[n]);
|
|
|
1239 return NGX_CONF_ERROR;
|
|
0
|
1240 }
|
|
|
1241
|
|
464
|
1242 if (n == 1) {
|
|
|
1243
|
|
|
1244 for (i = 0; i < 3; i++) {
|
|
|
1245 v = ngx_array_push(*a);
|
|
|
1246 if (v == NULL) {
|
|
|
1247 return NGX_CONF_ERROR;
|
|
|
1248 }
|
|
|
1249
|
|
|
1250 v->status = statuses[i];
|
|
|
1251 v->valid = valid;
|
|
|
1252 }
|
|
|
1253
|
|
|
1254 return NGX_CONF_OK;
|
|
0
|
1255 }
|
|
|
1256
|
|
464
|
1257 for (i = 1; i < n; i++) {
|
|
|
1258
|
|
|
1259 if (ngx_strcmp(value[i].data, "any") == 0) {
|
|
|
1260
|
|
|
1261 status = 0;
|
|
|
1262
|
|
|
1263 } else {
|
|
0
|
1264
|
|
464
|
1265 status = ngx_atoi(value[i].data, value[i].len);
|
|
|
1266 if (status < 100) {
|
|
|
1267 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
1268 "invalid status \"%V\"", &value[i]);
|
|
|
1269 return NGX_CONF_ERROR;
|
|
|
1270 }
|
|
|
1271 }
|
|
|
1272
|
|
|
1273 v = ngx_array_push(*a);
|
|
|
1274 if (v == NULL) {
|
|
|
1275 return NGX_CONF_ERROR;
|
|
|
1276 }
|
|
|
1277
|
|
|
1278 v->status = status;
|
|
|
1279 v->valid = valid;
|
|
|
1280 }
|
|
|
1281
|
|
|
1282 return NGX_CONF_OK;
|
|
0
|
1283 }
|
