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358
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1
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2 /*
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3 * Copyright (C) Igor Sysoev
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660
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4 * Copyright (C) Nginx, Inc.
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358
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5 */
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6
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7
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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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12
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13 typedef struct {
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14 ngx_flag_t enable;
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15 } ngx_http_gzip_static_conf_t;
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16
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17
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18 static ngx_int_t ngx_http_gzip_static_handler(ngx_http_request_t *r);
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19 static void *ngx_http_gzip_static_create_conf(ngx_conf_t *cf);
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20 static char *ngx_http_gzip_static_merge_conf(ngx_conf_t *cf, void *parent,
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21 void *child);
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22 static ngx_int_t ngx_http_gzip_static_init(ngx_conf_t *cf);
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23
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24
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25 static ngx_command_t ngx_http_gzip_static_commands[] = {
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26
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27 { ngx_string("gzip_static"),
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28 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
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29 ngx_conf_set_flag_slot,
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30 NGX_HTTP_LOC_CONF_OFFSET,
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31 offsetof(ngx_http_gzip_static_conf_t, enable),
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32 NULL },
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33
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34 ngx_null_command
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35 };
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36
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37
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38 ngx_http_module_t ngx_http_gzip_static_module_ctx = {
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39 NULL, /* preconfiguration */
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40 ngx_http_gzip_static_init, /* postconfiguration */
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41
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42 NULL, /* create main configuration */
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43 NULL, /* init main configuration */
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44
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45 NULL, /* create server configuration */
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46 NULL, /* merge server configuration */
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47
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48 ngx_http_gzip_static_create_conf, /* create location configuration */
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49 ngx_http_gzip_static_merge_conf /* merge location configuration */
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50 };
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51
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52
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53 ngx_module_t ngx_http_gzip_static_module = {
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54 NGX_MODULE_V1,
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55 &ngx_http_gzip_static_module_ctx, /* module context */
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56 ngx_http_gzip_static_commands, /* module directives */
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57 NGX_HTTP_MODULE, /* module type */
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58 NULL, /* init master */
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59 NULL, /* init module */
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60 NULL, /* init process */
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61 NULL, /* init thread */
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62 NULL, /* exit thread */
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63 NULL, /* exit process */
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64 NULL, /* exit master */
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65 NGX_MODULE_V1_PADDING
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66 };
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67
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68
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69 static ngx_int_t
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70 ngx_http_gzip_static_handler(ngx_http_request_t *r)
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71 {
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72 u_char *p;
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73 size_t root;
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74 ngx_str_t path;
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75 ngx_int_t rc;
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76 ngx_uint_t level;
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77 ngx_log_t *log;
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78 ngx_buf_t *b;
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79 ngx_chain_t out;
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80 ngx_table_elt_t *h;
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81 ngx_open_file_info_t of;
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82 ngx_http_core_loc_conf_t *clcf;
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83 ngx_http_gzip_static_conf_t *gzcf;
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84
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85 if (!(r->method & (NGX_HTTP_GET|NGX_HTTP_HEAD))) {
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362
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86 return NGX_DECLINED;
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358
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87 }
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88
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89 if (r->uri.data[r->uri.len - 1] == '/') {
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90 return NGX_DECLINED;
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91 }
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92
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93 gzcf = ngx_http_get_module_loc_conf(r, ngx_http_gzip_static_module);
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94
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528
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95 if (!gzcf->enable) {
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96 return NGX_DECLINED;
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97 }
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98
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546
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99 rc = ngx_http_gzip_ok(r);
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100
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528
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101 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
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102
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546
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103 if (!clcf->gzip_vary && rc != NGX_OK) {
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358
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104 return NGX_DECLINED;
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105 }
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106
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107 log = r->connection->log;
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108
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109 p = ngx_http_map_uri_to_path(r, &path, &root, sizeof(".gz") - 1);
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110 if (p == NULL) {
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111 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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112 }
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113
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114 *p++ = '.';
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115 *p++ = 'g';
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116 *p++ = 'z';
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117 *p = '\0';
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118
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119 path.len = p - path.data;
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120
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121 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, log, 0,
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122 "http filename: \"%s\"", path.data);
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123
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384
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124 ngx_memzero(&of, sizeof(ngx_open_file_info_t));
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125
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532
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126 of.read_ahead = clcf->read_ahead;
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390
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127 of.directio = clcf->directio;
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358
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128 of.valid = clcf->open_file_cache_valid;
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129 of.min_uses = clcf->open_file_cache_min_uses;
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130 of.errors = clcf->open_file_cache_errors;
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131 of.events = clcf->open_file_cache_events;
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664
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132
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133 if (ngx_http_set_disable_symlinks(r, clcf, &path, &of) != NGX_OK) {
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134 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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135 }
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358
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136
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362
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137 if (ngx_open_cached_file(clcf->open_file_cache, &path, &of, r->pool)
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138 != NGX_OK)
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139 {
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358
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140 switch (of.err) {
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141
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142 case 0:
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143 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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144
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145 case NGX_ENOENT:
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146 case NGX_ENOTDIR:
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147 case NGX_ENAMETOOLONG:
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148
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149 return NGX_DECLINED;
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150
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151 case NGX_EACCES:
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662
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152 #if (NGX_HAVE_OPENAT)
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153 case NGX_EMLINK:
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154 case NGX_ELOOP:
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155 #endif
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358
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156
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157 level = NGX_LOG_ERR;
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158 break;
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159
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160 default:
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161
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162 level = NGX_LOG_CRIT;
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163 break;
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164 }
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165
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166 ngx_log_error(level, log, of.err,
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482
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167 "%s \"%s\" failed", of.failed, path.data);
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358
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168
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362
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169 return NGX_DECLINED;
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358
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170 }
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171
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546
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172 r->gzip_vary = 1;
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173
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174 if (rc != NGX_OK) {
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175 return NGX_DECLINED;
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176 }
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177
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358
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178 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, log, 0, "http static fd: %d", of.fd);
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179
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180 if (of.is_dir) {
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181 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, log, 0, "http dir");
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182 return NGX_DECLINED;
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183 }
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184
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185 #if !(NGX_WIN32) /* the not regular files are probably Unix specific */
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186
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187 if (!of.is_file) {
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568
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188 ngx_log_error(NGX_LOG_CRIT, log, 0,
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358
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189 "\"%s\" is not a regular file", path.data);
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190
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191 return NGX_HTTP_NOT_FOUND;
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192 }
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193
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194 #endif
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195
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438
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196 r->root_tested = !r->error_page;
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388
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197
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358
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198 rc = ngx_http_discard_request_body(r);
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199
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200 if (rc != NGX_OK) {
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201 return rc;
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202 }
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203
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204 log->action = "sending response to client";
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205
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206 r->headers_out.status = NGX_HTTP_OK;
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207 r->headers_out.content_length_n = of.size;
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208 r->headers_out.last_modified_time = of.mtime;
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209
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210 if (ngx_http_set_content_type(r) != NGX_OK) {
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211 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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212 }
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213
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214 h = ngx_list_push(&r->headers_out.headers);
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215 if (h == NULL) {
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216 return NGX_ERROR;
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217 }
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218
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219 h->hash = 1;
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570
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220 ngx_str_set(&h->key, "Content-Encoding");
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221 ngx_str_set(&h->value, "gzip");
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222 r->headers_out.content_encoding = h;
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358
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223
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494
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224 r->ignore_content_encoding = 1;
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358
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225
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226 /* we need to allocate all before the header would be sent */
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227
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228 b = ngx_pcalloc(r->pool, sizeof(ngx_buf_t));
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229 if (b == NULL) {
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230 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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231 }
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232
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233 b->file = ngx_pcalloc(r->pool, sizeof(ngx_file_t));
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234 if (b->file == NULL) {
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235 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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236 }
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237
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238 rc = ngx_http_send_header(r);
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239
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240 if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) {
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241 return rc;
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242 }
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243
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244 b->file_pos = 0;
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245 b->file_last = of.size;
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246
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247 b->in_file = b->file_last ? 1 : 0;
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248 b->last_buf = 1;
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249 b->last_in_chain = 1;
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250
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251 b->file->fd = of.fd;
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252 b->file->name = path;
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253 b->file->log = log;
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406
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254 b->file->directio = of.is_directio;
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358
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255
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256 out.buf = b;
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257 out.next = NULL;
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258
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259 return ngx_http_output_filter(r, &out);
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260 }
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261
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262
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263 static void *
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264 ngx_http_gzip_static_create_conf(ngx_conf_t *cf)
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265 {
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266 ngx_http_gzip_static_conf_t *conf;
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267
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268 conf = ngx_palloc(cf->pool, sizeof(ngx_http_gzip_static_conf_t));
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269 if (conf == NULL) {
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496
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270 return NULL;
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358
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271 }
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272
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273 conf->enable = NGX_CONF_UNSET;
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274
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275 return conf;
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276 }
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277
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278
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279 static char *
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280 ngx_http_gzip_static_merge_conf(ngx_conf_t *cf, void *parent, void *child)
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281 {
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282 ngx_http_gzip_static_conf_t *prev = parent;
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283 ngx_http_gzip_static_conf_t *conf = child;
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284
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285 ngx_conf_merge_value(conf->enable, prev->enable, 0);
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286
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287 return NGX_CONF_OK;
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288 }
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289
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290
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291 static ngx_int_t
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292 ngx_http_gzip_static_init(ngx_conf_t *cf)
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293 {
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294 ngx_http_handler_pt *h;
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295 ngx_http_core_main_conf_t *cmcf;
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296
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297 cmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_core_module);
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298
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299 h = ngx_array_push(&cmcf->phases[NGX_HTTP_CONTENT_PHASE].handlers);
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300 if (h == NULL) {
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301 return NGX_ERROR;
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302 }
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303
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304 *h = ngx_http_gzip_static_handler;
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305
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306 return NGX_OK;
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307 }
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