6
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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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10
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11
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12 #if 0
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13
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14 typedef struct {
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15 ngx_buf_t *buf;
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16 size_t size;
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17 ngx_pool_t *pool;
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18 size_t alloc_size;
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19 ngx_chain_t **last_out;
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20 } ngx_http_autoindex_ctx_t;
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21
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22 #endif
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23
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24
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25 typedef struct {
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26 ngx_str_t name;
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10
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27 ngx_uint_t escape;
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28 ngx_uint_t dir;
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29 time_t mtime;
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30 off_t size;
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31 } ngx_http_autoindex_entry_t;
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32
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33
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34 typedef struct {
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35 ngx_flag_t enable;
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36 } ngx_http_autoindex_loc_conf_t;
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37
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38
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39 #define NGX_HTTP_AUTOINDEX_NAME_LEN 50
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40
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41
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42 static int ngx_http_autoindex_cmp_entries(const void *one, const void *two);
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43 static ngx_int_t ngx_http_autoindex_error(ngx_http_request_t *r, ngx_dir_t *dir,
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44 u_char *name);
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45 static ngx_int_t ngx_http_autoindex_init(ngx_cycle_t *cycle);
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46 static void *ngx_http_autoindex_create_loc_conf(ngx_conf_t *cf);
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47 static char *ngx_http_autoindex_merge_loc_conf(ngx_conf_t *cf,
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48 void *parent, void *child);
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49
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50
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51 static ngx_command_t ngx_http_autoindex_commands[] = {
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52
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53 { ngx_string("autoindex"),
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54 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
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55 ngx_conf_set_flag_slot,
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56 NGX_HTTP_LOC_CONF_OFFSET,
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57 offsetof(ngx_http_autoindex_loc_conf_t, enable),
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58 NULL },
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59
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60 ngx_null_command
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61 };
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62
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63
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64 ngx_http_module_t ngx_http_autoindex_module_ctx = {
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65 NULL, /* pre conf */
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66
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67 NULL, /* create main configuration */
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68 NULL, /* init main configuration */
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69
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70 NULL, /* create server configuration */
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71 NULL, /* merge server configuration */
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72
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73 ngx_http_autoindex_create_loc_conf, /* create location configration */
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74 ngx_http_autoindex_merge_loc_conf /* merge location configration */
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75 };
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76
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77
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78 ngx_module_t ngx_http_autoindex_module = {
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79 NGX_MODULE,
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80 &ngx_http_autoindex_module_ctx, /* module context */
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81 ngx_http_autoindex_commands, /* module directives */
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82 NGX_HTTP_MODULE, /* module type */
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83 ngx_http_autoindex_init, /* init module */
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84 NULL /* init child */
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85 };
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86
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87
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88 static u_char title[] =
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89 "<html>" CRLF
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90 "<head><title>Index of "
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91 ;
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92
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93
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94 static u_char header[] =
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95 "</title></head>" CRLF
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96 "<body bgcolor=\"white\">" CRLF
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97 "<h1>Index of "
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98 ;
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99
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100 static u_char tail[] =
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101 "</body>" CRLF
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102 "</html>" CRLF
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103 ;
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104
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105
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106 static ngx_int_t ngx_http_autoindex_handler(ngx_http_request_t *r)
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107 {
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22
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108 u_char *last;
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6
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109 size_t len;
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110 ngx_tm_t tm;
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22
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111 ngx_int_t rc;
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112 ngx_uint_t i, level;
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113 ngx_err_t err;
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114 ngx_buf_t *b;
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115 ngx_chain_t out;
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116 ngx_str_t dname, fname;
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117 ngx_dir_t dir;
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118 ngx_pool_t *pool;
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119 ngx_array_t entries;
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120 ngx_http_core_loc_conf_t *clcf;
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121 ngx_http_autoindex_entry_t *entry;
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122 ngx_http_autoindex_loc_conf_t *alcf;
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123
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124 static char *months[] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun",
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125 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" };
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126
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127 if (r->uri.data[r->uri.len - 1] != '/') {
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128 return NGX_DECLINED;
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129 }
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130
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38
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131 /* TODO: Win32 */
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132 if (r->zero_in_uri) {
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133 return NGX_DECLINED;
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134 }
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135
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6
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136 alcf = ngx_http_get_module_loc_conf(r, ngx_http_autoindex_module);
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137
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138 if (!alcf->enable) {
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139 return NGX_DECLINED;
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140 }
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141
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142 /* TODO: pool should be temporary pool */
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143 pool = r->pool;
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144
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145 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
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146
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147 if (clcf->alias) {
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148 dname.data = ngx_palloc(pool, clcf->root.len + r->uri.len
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149 + NGX_DIR_MASK_LEN
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150 - clcf->name.len);
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151 if (dname.data == NULL) {
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152 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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153 }
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154
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155 last = ngx_cpymem(dname.data, clcf->root.data, clcf->root.len);
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156 last = ngx_cpystrn(last, r->uri.data + clcf->name.len,
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157 r->uri.len - clcf->name.len);
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158
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159 } else {
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160 dname.data = ngx_palloc(pool, clcf->root.len + r->uri.len
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161 + NGX_DIR_MASK_LEN);
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162 if (dname.data == NULL) {
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163 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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164 }
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165
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166 last = ngx_cpymem(dname.data, clcf->root.data, clcf->root.len);
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167 last = ngx_cpystrn(last, r->uri.data, r->uri.len);
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168
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169 }
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170
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171 dname.len = last - dname.data;
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172
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173 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
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174 "http autoindex: \"%s\"", dname.data);
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175
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176
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177 if (ngx_open_dir(&dname, &dir) == NGX_ERROR) {
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178 err = ngx_errno;
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179
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180 if (err == NGX_ENOENT || err == NGX_ENOTDIR) {
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181 level = NGX_LOG_ERR;
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182 rc = NGX_HTTP_NOT_FOUND;
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183
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184 } else if (err == NGX_EACCES) {
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185 level = NGX_LOG_ERR;
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186 rc = NGX_HTTP_FORBIDDEN;
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187
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188 } else {
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189 level = NGX_LOG_CRIT;
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190 rc = NGX_HTTP_INTERNAL_SERVER_ERROR;
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191 }
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192
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193 ngx_log_error(level, r->connection->log, err,
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194 ngx_open_dir_n " \"%s\" failed", dname.data);
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195
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196 return rc;
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197 }
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198
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199 #if (NGX_SUPPRESS_WARN)
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200 /* MSVC thinks 'entries' may be used without having been initialized */
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201 ngx_memzero(&entries, sizeof(ngx_array_t));
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202 #endif
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203
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204 if (ngx_array_init(&entries, pool, 50, sizeof(ngx_http_autoindex_entry_t))
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205 == NGX_ERROR)
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206 {
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207 return ngx_http_autoindex_error(r, &dir, dname.data);
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208 }
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209
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210 fname.len = 0;
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211 #if (NGX_SUPPRESS_WARN)
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212 fname.data = NULL;
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213 #endif
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214
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215 for ( ;; ) {
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216 ngx_set_errno(0);
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217
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218 if (ngx_read_dir(&dir) == NGX_ERROR) {
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219 err = ngx_errno;
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220
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221 if (err == NGX_ENOMOREFILES) {
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222 rc = NGX_OK;
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223
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224 } else {
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225 ngx_log_error(NGX_LOG_CRIT, r->connection->log, err,
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226 ngx_read_dir_n " \"%s\" failed", dname.data);
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227 return ngx_http_autoindex_error(r, &dir, dname.data);
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228 }
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229
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230 break;
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231 }
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232
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233 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
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234 "http autoindex file: \"%s\"", ngx_de_name(&dir));
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235
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236 len = ngx_de_namelen(&dir);
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237
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8
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238 if (len == 1 && ngx_de_name(&dir)[0] == '.') {
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239 continue;
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240 }
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241
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242 if (len == 2
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243 && ngx_de_name(&dir)[0] == '.'
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244 && ngx_de_name(&dir)[0] == '.')
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245 {
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246 continue;
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247 }
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248
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6
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249 if (!dir.valid_info) {
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250
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251 if (dname.len + 1 + len > fname.len) {
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252 fname.len = dname.len + 1 + len + 32;
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253
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254 if (!(fname.data = ngx_palloc(pool, fname.len))) {
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255 return ngx_http_autoindex_error(r, &dir, dname.data);
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256 }
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257
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258 last = ngx_cpystrn(fname.data, dname.data,
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259 dname.len + 1);
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260 *last++ = '/';
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261 }
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262
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263 ngx_cpystrn(last, ngx_de_name(&dir), len + 1);
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264
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265 if (ngx_de_info(fname.data, &dir) == NGX_FILE_ERROR) {
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266 ngx_log_error(NGX_LOG_CRIT, r->connection->log, ngx_errno,
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267 ngx_de_info_n " \"%s\" failed", fname.data);
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268 return ngx_http_autoindex_error(r, &dir, dname.data);
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269 }
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270 }
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271
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272 if (!(entry = ngx_array_push(&entries))) {
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273 return ngx_http_autoindex_error(r, &dir, dname.data);
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274 }
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275
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276 entry->name.len = len;
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277 entry->escape = 2 * ngx_escape_uri(NULL, ngx_de_name(&dir), len,
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278 NGX_ESCAPE_HTML);
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279
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10
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280 if (!(entry->name.data = ngx_palloc(pool, len + entry->escape + 1))) {
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281 return ngx_http_autoindex_error(r, &dir, dname.data);
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282 }
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10
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283
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6
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284 ngx_cpystrn(entry->name.data, ngx_de_name(&dir), len + 1);
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285
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286 entry->dir = ngx_de_is_dir(&dir);
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287 entry->mtime = ngx_de_mtime(&dir);
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288 entry->size = ngx_de_size(&dir);
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289 }
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290
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291 if (ngx_close_dir(&dir) == NGX_ERROR) {
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292 ngx_log_error(NGX_LOG_ALERT, r->connection->log, ngx_errno,
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293 ngx_close_dir_n " \"%s\" failed", dname.data);
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294 }
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295
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296 len = sizeof(title) - 1
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297 + r->uri.len
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298 + sizeof(header) - 1
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299 + r->uri.len
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300 + sizeof("</h1>") - 1
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301 + sizeof("<hr><pre><a href=\"../\">../</a>" CRLF) - 1
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302 + sizeof("</pre><hr>") - 1
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303 + sizeof(tail) - 1;
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304
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305 entry = entries.elts;
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306 for (i = 0; i < entries.nelts; i++) {
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307 len += sizeof("<a href=\"") - 1
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308 + 1 /* 1 is for "/" */
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10
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309 + entry[i].name.len + entry[i].escape
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310 + sizeof("\">") - 1
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311 + NGX_HTTP_AUTOINDEX_NAME_LEN + sizeof(">") - 2
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312 + sizeof("</a>") - 1
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16
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313 + sizeof(" 28-Sep-1970 12:00 ") - 1
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22
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314 + 19
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6
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315 + 2;
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316 }
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317
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318 if (!(b = ngx_create_temp_buf(r->pool, len))) {
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319 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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320 }
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321
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322 if (entries.nelts > 1) {
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323 ngx_qsort(entry, (size_t) entries.nelts,
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324 sizeof(ngx_http_autoindex_entry_t),
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325 ngx_http_autoindex_cmp_entries);
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326 }
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327
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328 b->last = ngx_cpymem(b->last, title, sizeof(title) - 1);
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329 b->last = ngx_cpymem(b->last, r->uri.data, r->uri.len);
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330 b->last = ngx_cpymem(b->last, header, sizeof(header) - 1);
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331 b->last = ngx_cpymem(b->last, r->uri.data, r->uri.len);
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332 b->last = ngx_cpymem(b->last, "</h1>", sizeof("</h1>") - 1);
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333
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334 b->last = ngx_cpymem(b->last, "<hr><pre><a href=\"../\">../</a>" CRLF,
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335 sizeof("<hr><pre><a href=\"../\">../</a>" CRLF) - 1);
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336
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337 for (i = 0; i < entries.nelts; i++) {
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338 b->last = ngx_cpymem(b->last, "<a href=\"", sizeof("<a href=\"") - 1);
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10
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339
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340 if (entry[i].escape) {
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341 ngx_escape_uri(b->last, entry[i].name.data, entry[i].name.len,
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342 NGX_ESCAPE_HTML);
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343
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344 b->last += entry[i].name.len + entry[i].escape;
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345
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346 } else {
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347 b->last = ngx_cpymem(b->last, entry[i].name.data,
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348 entry[i].name.len);
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349 }
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6
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350
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351 if (entry[i].dir) {
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352 *b->last++ = '/';
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353 }
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354
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355 *b->last++ = '"';
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356 *b->last++ = '>';
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357
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358 b->last = ngx_cpystrn(b->last, entry[i].name.data,
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359 NGX_HTTP_AUTOINDEX_NAME_LEN + 1);
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360
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361 len = entry[i].name.len;
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362
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363 if (len > NGX_HTTP_AUTOINDEX_NAME_LEN) {
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364 b->last = ngx_cpymem(b->last - 3, "..></a>",
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365 sizeof("..></a>") - 1);
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366
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367 } else {
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368 if (entry[i].dir && NGX_HTTP_AUTOINDEX_NAME_LEN - len > 0) {
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369 *b->last++ = '/';
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370 len++;
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371 }
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372
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373 b->last = ngx_cpymem(b->last, "</a>", sizeof("</a>") - 1);
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374 ngx_memset(b->last, ' ', NGX_HTTP_AUTOINDEX_NAME_LEN - len);
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375 b->last += NGX_HTTP_AUTOINDEX_NAME_LEN - len;
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376 }
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377
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378 *b->last++ = ' ';
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379
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380 ngx_gmtime(entry[i].mtime, &tm);
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381
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382 b->last = ngx_sprintf(b->last, "%02d-%s-%d %02d:%02d ",
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383 tm.ngx_tm_mday,
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384 months[tm.ngx_tm_mon - 1],
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385 tm.ngx_tm_year,
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386 tm.ngx_tm_hour,
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387 tm.ngx_tm_min);
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388
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389 if (entry[i].dir) {
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22
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390 b->last = ngx_cpymem(b->last, " -",
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391 sizeof(" -") - 1);
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6
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392
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393 } else {
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22
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394 b->last = ngx_sprintf(b->last, "%19O", entry[i].size);
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6
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395 }
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396
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397 *b->last++ = CR;
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398 *b->last++ = LF;
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399 }
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400
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8
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401 /* TODO: free temporary pool */
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402
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6
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403 b->last = ngx_cpymem(b->last, "</pre><hr>", sizeof("</pre><hr>") - 1);
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404
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405 b->last = ngx_cpymem(b->last, tail, sizeof(tail) - 1);
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406
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407 r->headers_out.status = NGX_HTTP_OK;
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408 r->headers_out.content_length_n = b->last - b->pos;
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409
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410 r->headers_out.content_type = ngx_list_push(&r->headers_out.headers);
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411 if (r->headers_out.content_type == NULL) {
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412 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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413 }
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414
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415 r->headers_out.content_type->key.len = 0;
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416 r->headers_out.content_type->key.data = NULL;
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417 r->headers_out.content_type->value.len = sizeof("text/html") - 1;
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418 r->headers_out.content_type->value.data = (u_char *) "text/html";
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419
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420 rc = ngx_http_send_header(r);
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421
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422 if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) {
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423 return rc;
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424 }
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425
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426 if (!r->main) {
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427 b->last_buf = 1;
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428 }
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429
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430 out.buf = b;
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431 out.next = NULL;
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432
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433 return ngx_http_output_filter(r, &out);
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434 }
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435
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436
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437 static int ngx_http_autoindex_cmp_entries(const void *one, const void *two)
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438 {
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439 ngx_http_autoindex_entry_t *first = (ngx_http_autoindex_entry_t *) one;
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440 ngx_http_autoindex_entry_t *second = (ngx_http_autoindex_entry_t *) two;
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441
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442 if (first->dir && !second->dir) {
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443 /* move the directories to the start */
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444 return -1;
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445 }
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446
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447 if (!first->dir && second->dir) {
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448 /* move the directories to the start */
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449 return 1;
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450 }
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451
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452 return (int) ngx_strcmp(first->name.data, second->name.data);
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453 }
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454
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455
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456 #if 0
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457
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458 static ngx_buf_t *ngx_http_autoindex_alloc(ngx_http_autoindex_ctx_t *ctx,
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459 size_t size)
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460 {
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461 ngx_chain_t *cl;
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462
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463 if (ctx->buf) {
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464
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465 if ((size_t) (ctx->buf->end - ctx->buf->last) >= size) {
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466 return ctx->buf;
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467 }
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468
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469 ctx->size += ctx->buf->last - ctx->buf->pos;
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470 }
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471
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472 if (!(ctx->buf = ngx_create_temp_buf(ctx->pool, ctx->alloc_size))) {
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473 return NULL;
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474 }
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475
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476 if (!(cl = ngx_alloc_chain_link(ctx->pool))) {
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477 return NULL;
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478 }
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479
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480 cl->buf = ctx->buf;
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481 cl->next = NULL;
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482
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483 *ctx->last_out = cl;
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484 ctx->last_out = &cl->next;
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485
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486 return ctx->buf;
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487 }
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488
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489 #endif
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490
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491
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492 static ngx_int_t ngx_http_autoindex_error(ngx_http_request_t *r, ngx_dir_t *dir,
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493 u_char *name)
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494 {
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495 if (ngx_close_dir(dir) == NGX_ERROR) {
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496 ngx_log_error(NGX_LOG_ALERT, r->connection->log, ngx_errno,
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497 ngx_close_dir_n " \"%s\" failed", name);
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498 }
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499
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500 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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501 }
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502
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503
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504 static ngx_int_t ngx_http_autoindex_init(ngx_cycle_t *cycle)
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505 {
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506 ngx_http_handler_pt *h;
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507 ngx_http_core_main_conf_t *cmcf;
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508
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509 cmcf = ngx_http_cycle_get_module_main_conf(cycle, ngx_http_core_module);
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510
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511 h = ngx_array_push(&cmcf->phases[NGX_HTTP_CONTENT_PHASE].handlers);
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512 if (h == NULL) {
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513 return NGX_ERROR;
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514 }
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515
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516 *h = ngx_http_autoindex_handler;
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517
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518 return NGX_OK;
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519 }
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520
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521
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522 static void *ngx_http_autoindex_create_loc_conf(ngx_conf_t *cf)
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523 {
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524 ngx_http_autoindex_loc_conf_t *conf;
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525
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526 conf = ngx_palloc(cf->pool, sizeof(ngx_http_autoindex_loc_conf_t));
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527 if (conf == NULL) {
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528 return NGX_CONF_ERROR;
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529 }
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530
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531 conf->enable = NGX_CONF_UNSET;
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532
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533 return conf;
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534 }
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535
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536
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537 static char *ngx_http_autoindex_merge_loc_conf(ngx_conf_t *cf,
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538 void *parent, void *child)
|
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539 {
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540 ngx_http_autoindex_loc_conf_t *prev = parent;
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541 ngx_http_autoindex_loc_conf_t *conf = child;
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542
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543 ngx_conf_merge_value(conf->enable, prev->enable, 0);
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544
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545 return NGX_CONF_OK;
|
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546 }
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