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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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686
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13 #define NGX_HTTP_GZIP_STATIC_OFF 0
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14 #define NGX_HTTP_GZIP_STATIC_ON 1
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15 #define NGX_HTTP_GZIP_STATIC_ALWAYS 2
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16
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17
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358
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18 typedef struct {
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686
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19 ngx_uint_t enable;
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358
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20 } ngx_http_gzip_static_conf_t;
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21
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22
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23 static ngx_int_t ngx_http_gzip_static_handler(ngx_http_request_t *r);
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24 static void *ngx_http_gzip_static_create_conf(ngx_conf_t *cf);
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25 static char *ngx_http_gzip_static_merge_conf(ngx_conf_t *cf, void *parent,
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26 void *child);
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27 static ngx_int_t ngx_http_gzip_static_init(ngx_conf_t *cf);
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28
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29
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686
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30 static ngx_conf_enum_t ngx_http_gzip_static[] = {
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31 { ngx_string("off"), NGX_HTTP_GZIP_STATIC_OFF },
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32 { ngx_string("on"), NGX_HTTP_GZIP_STATIC_ON },
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33 { ngx_string("always"), NGX_HTTP_GZIP_STATIC_ALWAYS },
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34 { ngx_null_string, 0 }
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35 };
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36
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37
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358
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38 static ngx_command_t ngx_http_gzip_static_commands[] = {
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39
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40 { ngx_string("gzip_static"),
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41 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
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42 ngx_conf_set_enum_slot,
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358
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43 NGX_HTTP_LOC_CONF_OFFSET,
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44 offsetof(ngx_http_gzip_static_conf_t, enable),
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686
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45 &ngx_http_gzip_static },
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358
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46
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47 ngx_null_command
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48 };
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49
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50
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51 ngx_http_module_t ngx_http_gzip_static_module_ctx = {
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52 NULL, /* preconfiguration */
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53 ngx_http_gzip_static_init, /* postconfiguration */
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54
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55 NULL, /* create main configuration */
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56 NULL, /* init main configuration */
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57
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58 NULL, /* create server configuration */
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59 NULL, /* merge server configuration */
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60
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61 ngx_http_gzip_static_create_conf, /* create location configuration */
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62 ngx_http_gzip_static_merge_conf /* merge location configuration */
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63 };
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64
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65
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66 ngx_module_t ngx_http_gzip_static_module = {
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67 NGX_MODULE_V1,
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68 &ngx_http_gzip_static_module_ctx, /* module context */
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69 ngx_http_gzip_static_commands, /* module directives */
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70 NGX_HTTP_MODULE, /* module type */
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71 NULL, /* init master */
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72 NULL, /* init module */
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73 NULL, /* init process */
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74 NULL, /* init thread */
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75 NULL, /* exit thread */
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76 NULL, /* exit process */
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77 NULL, /* exit master */
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78 NGX_MODULE_V1_PADDING
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79 };
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80
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81
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82 static ngx_int_t
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83 ngx_http_gzip_static_handler(ngx_http_request_t *r)
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84 {
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85 u_char *p;
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86 size_t root;
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87 ngx_str_t path;
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88 ngx_int_t rc;
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89 ngx_uint_t level;
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90 ngx_log_t *log;
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91 ngx_buf_t *b;
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92 ngx_chain_t out;
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93 ngx_table_elt_t *h;
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94 ngx_open_file_info_t of;
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95 ngx_http_core_loc_conf_t *clcf;
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96 ngx_http_gzip_static_conf_t *gzcf;
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97
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98 if (!(r->method & (NGX_HTTP_GET|NGX_HTTP_HEAD))) {
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362
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99 return NGX_DECLINED;
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358
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100 }
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101
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102 if (r->uri.data[r->uri.len - 1] == '/') {
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103 return NGX_DECLINED;
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104 }
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105
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106 gzcf = ngx_http_get_module_loc_conf(r, ngx_http_gzip_static_module);
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107
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686
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108 if (gzcf->enable == NGX_HTTP_GZIP_STATIC_OFF) {
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528
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109 return NGX_DECLINED;
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110 }
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111
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112 if (gzcf->enable == NGX_HTTP_GZIP_STATIC_ON) {
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113 rc = ngx_http_gzip_ok(r);
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114
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115 } else {
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116 /* always */
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117 rc = NGX_OK;
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118 }
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546
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119
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528
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120 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
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121
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546
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122 if (!clcf->gzip_vary && rc != NGX_OK) {
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123 return NGX_DECLINED;
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124 }
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125
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126 log = r->connection->log;
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127
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128 p = ngx_http_map_uri_to_path(r, &path, &root, sizeof(".gz") - 1);
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129 if (p == NULL) {
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130 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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131 }
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132
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133 *p++ = '.';
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134 *p++ = 'g';
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135 *p++ = 'z';
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136 *p = '\0';
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137
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138 path.len = p - path.data;
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139
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140 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, log, 0,
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141 "http filename: \"%s\"", path.data);
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142
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384
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143 ngx_memzero(&of, sizeof(ngx_open_file_info_t));
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144
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145 of.read_ahead = clcf->read_ahead;
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146 of.directio = clcf->directio;
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147 of.valid = clcf->open_file_cache_valid;
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148 of.min_uses = clcf->open_file_cache_min_uses;
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149 of.errors = clcf->open_file_cache_errors;
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150 of.events = clcf->open_file_cache_events;
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664
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151
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152 if (ngx_http_set_disable_symlinks(r, clcf, &path, &of) != NGX_OK) {
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153 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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154 }
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358
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155
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362
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156 if (ngx_open_cached_file(clcf->open_file_cache, &path, &of, r->pool)
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157 != NGX_OK)
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158 {
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358
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159 switch (of.err) {
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160
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161 case 0:
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162 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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163
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164 case NGX_ENOENT:
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165 case NGX_ENOTDIR:
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166 case NGX_ENAMETOOLONG:
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167
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168 return NGX_DECLINED;
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169
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170 case NGX_EACCES:
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662
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171 #if (NGX_HAVE_OPENAT)
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172 case NGX_EMLINK:
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173 case NGX_ELOOP:
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174 #endif
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358
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175
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176 level = NGX_LOG_ERR;
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177 break;
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178
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179 default:
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180
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181 level = NGX_LOG_CRIT;
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182 break;
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183 }
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184
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185 ngx_log_error(level, log, of.err,
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482
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186 "%s \"%s\" failed", of.failed, path.data);
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187
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188 return NGX_DECLINED;
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358
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189 }
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190
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686
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191 if (gzcf->enable == NGX_HTTP_GZIP_STATIC_ON) {
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192 r->gzip_vary = 1;
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546
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193
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194 if (rc != NGX_OK) {
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195 return NGX_DECLINED;
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196 }
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546
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197 }
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198
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199 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, log, 0, "http static fd: %d", of.fd);
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200
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201 if (of.is_dir) {
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202 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, log, 0, "http dir");
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203 return NGX_DECLINED;
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204 }
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205
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206 #if !(NGX_WIN32) /* the not regular files are probably Unix specific */
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207
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208 if (!of.is_file) {
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209 ngx_log_error(NGX_LOG_CRIT, log, 0,
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210 "\"%s\" is not a regular file", path.data);
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211
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212 return NGX_HTTP_NOT_FOUND;
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213 }
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214
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215 #endif
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216
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438
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217 r->root_tested = !r->error_page;
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218
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219 rc = ngx_http_discard_request_body(r);
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220
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221 if (rc != NGX_OK) {
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222 return rc;
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223 }
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224
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225 log->action = "sending response to client";
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226
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227 r->headers_out.status = NGX_HTTP_OK;
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228 r->headers_out.content_length_n = of.size;
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229 r->headers_out.last_modified_time = of.mtime;
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230
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680
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231 if (ngx_http_set_etag(r) != NGX_OK) {
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232 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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233 }
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234
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235 if (ngx_http_set_content_type(r) != NGX_OK) {
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236 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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237 }
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238
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239 h = ngx_list_push(&r->headers_out.headers);
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240 if (h == NULL) {
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241 return NGX_ERROR;
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242 }
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243
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244 h->hash = 1;
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245 ngx_str_set(&h->key, "Content-Encoding");
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246 ngx_str_set(&h->value, "gzip");
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247 r->headers_out.content_encoding = h;
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358
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248
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494
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249 r->ignore_content_encoding = 1;
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358
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250
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251 /* we need to allocate all before the header would be sent */
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252
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253 b = ngx_pcalloc(r->pool, sizeof(ngx_buf_t));
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254 if (b == NULL) {
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255 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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256 }
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257
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258 b->file = ngx_pcalloc(r->pool, sizeof(ngx_file_t));
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259 if (b->file == NULL) {
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260 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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261 }
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262
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263 rc = ngx_http_send_header(r);
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264
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265 if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) {
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266 return rc;
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267 }
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268
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269 b->file_pos = 0;
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270 b->file_last = of.size;
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271
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272 b->in_file = b->file_last ? 1 : 0;
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273 b->last_buf = (r == r->main) ? 1 : 0;
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274 b->last_in_chain = 1;
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275
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276 b->file->fd = of.fd;
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277 b->file->name = path;
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278 b->file->log = log;
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406
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279 b->file->directio = of.is_directio;
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280
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281 out.buf = b;
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282 out.next = NULL;
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283
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284 return ngx_http_output_filter(r, &out);
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285 }
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286
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287
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288 static void *
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289 ngx_http_gzip_static_create_conf(ngx_conf_t *cf)
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290 {
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291 ngx_http_gzip_static_conf_t *conf;
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292
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293 conf = ngx_palloc(cf->pool, sizeof(ngx_http_gzip_static_conf_t));
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294 if (conf == NULL) {
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496
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295 return NULL;
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358
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296 }
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297
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686
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298 conf->enable = NGX_CONF_UNSET_UINT;
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358
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299
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300 return conf;
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301 }
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302
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303
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304 static char *
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305 ngx_http_gzip_static_merge_conf(ngx_conf_t *cf, void *parent, void *child)
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306 {
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307 ngx_http_gzip_static_conf_t *prev = parent;
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308 ngx_http_gzip_static_conf_t *conf = child;
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309
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686
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310 ngx_conf_merge_uint_value(conf->enable, prev->enable,
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311 NGX_HTTP_GZIP_STATIC_OFF);
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358
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312
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313 return NGX_CONF_OK;
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314 }
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315
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316
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317 static ngx_int_t
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318 ngx_http_gzip_static_init(ngx_conf_t *cf)
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319 {
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320 ngx_http_handler_pt *h;
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321 ngx_http_core_main_conf_t *cmcf;
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322
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323 cmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_core_module);
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324
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325 h = ngx_array_push(&cmcf->phases[NGX_HTTP_CONTENT_PHASE].handlers);
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326 if (h == NULL) {
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327 return NGX_ERROR;
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328 }
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329
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330 *h = ngx_http_gzip_static_handler;
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331
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332 return NGX_OK;
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333 }
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