50
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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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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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52
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42 static int ngx_libc_cdecl ngx_http_autoindex_cmp_entries(const void *one,
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43 const void *two);
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50
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44 static ngx_int_t ngx_http_autoindex_error(ngx_http_request_t *r,
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45 ngx_dir_t *dir, u_char *name);
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46 static ngx_int_t ngx_http_autoindex_init(ngx_cycle_t *cycle);
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47 static void *ngx_http_autoindex_create_loc_conf(ngx_conf_t *cf);
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48 static char *ngx_http_autoindex_merge_loc_conf(ngx_conf_t *cf,
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49 void *parent, void *child);
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50
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51
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52 static ngx_command_t ngx_http_autoindex_commands[] = {
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53
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54 { ngx_string("autoindex"),
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55 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
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56 ngx_conf_set_flag_slot,
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57 NGX_HTTP_LOC_CONF_OFFSET,
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58 offsetof(ngx_http_autoindex_loc_conf_t, enable),
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59 NULL },
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60
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61 ngx_null_command
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62 };
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63
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64
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65 ngx_http_module_t ngx_http_autoindex_module_ctx = {
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58
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66 NULL, /* preconfiguration */
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67 NULL, /* postconfiguration */
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68
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69 NULL, /* create main configuration */
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70 NULL, /* init main configuration */
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71
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72 NULL, /* create server configuration */
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73 NULL, /* merge server configuration */
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74
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75 ngx_http_autoindex_create_loc_conf, /* create location configration */
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76 ngx_http_autoindex_merge_loc_conf /* merge location configration */
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77 };
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78
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79
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80 ngx_module_t ngx_http_autoindex_module = {
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58
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81 NGX_MODULE_V1,
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82 &ngx_http_autoindex_module_ctx, /* module context */
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83 ngx_http_autoindex_commands, /* module directives */
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84 NGX_HTTP_MODULE, /* module type */
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85 ngx_http_autoindex_init, /* init module */
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86 NULL /* init process */
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87 };
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88
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89
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90 static u_char title[] =
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91 "<html>" CRLF
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92 "<head><title>Index of "
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93 ;
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94
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95
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96 static u_char header[] =
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97 "</title></head>" CRLF
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98 "<body bgcolor=\"white\">" CRLF
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99 "<h1>Index of "
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100 ;
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101
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102 static u_char tail[] =
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103 "</body>" CRLF
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104 "</html>" CRLF
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105 ;
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106
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107
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108 static ngx_int_t
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109 ngx_http_autoindex_handler(ngx_http_request_t *r)
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110 {
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111 u_char *last;
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112 size_t len;
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113 ngx_tm_t tm;
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114 ngx_int_t rc;
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115 ngx_uint_t i, level;
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116 ngx_err_t err;
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117 ngx_buf_t *b;
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118 ngx_chain_t out;
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119 ngx_str_t dname, fname;
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120 ngx_dir_t dir;
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121 ngx_pool_t *pool;
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122 ngx_array_t entries;
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123 ngx_http_core_loc_conf_t *clcf;
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124 ngx_http_autoindex_entry_t *entry;
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125 ngx_http_autoindex_loc_conf_t *alcf;
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126
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127 static char *months[] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun",
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128 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" };
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129
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130 if (r->uri.data[r->uri.len - 1] != '/') {
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131 return NGX_DECLINED;
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132 }
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133
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134 /* TODO: Win32 */
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135 if (r->zero_in_uri) {
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136 return NGX_DECLINED;
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137 }
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138
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139 alcf = ngx_http_get_module_loc_conf(r, ngx_http_autoindex_module);
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140
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141 if (!alcf->enable) {
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142 return NGX_DECLINED;
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143 }
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144
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145 /* TODO: pool should be temporary pool */
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146 pool = r->pool;
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147
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148 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
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149
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150 if (clcf->alias) {
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151 dname.data = ngx_palloc(pool, clcf->root.len + r->uri.len
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152 + NGX_DIR_MASK_LEN + 1
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153 - clcf->name.len);
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154 if (dname.data == NULL) {
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155 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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156 }
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157
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158 last = ngx_cpymem(dname.data, clcf->root.data, clcf->root.len);
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159 last = ngx_cpystrn(last, r->uri.data + clcf->name.len,
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160 r->uri.len - clcf->name.len + 1);
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161
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162 } else {
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163 dname.data = ngx_palloc(pool, clcf->root.len + r->uri.len
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164 + NGX_DIR_MASK_LEN);
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165 if (dname.data == NULL) {
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166 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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167 }
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168
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169 last = ngx_cpymem(dname.data, clcf->root.data, clcf->root.len);
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170 last = ngx_cpystrn(last, r->uri.data, r->uri.len);
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171 }
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172
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173 dname.len = last - dname.data;
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174
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175 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
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176 "http autoindex: \"%s\"", dname.data);
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177
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178
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179 if (ngx_open_dir(&dname, &dir) == NGX_ERROR) {
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180 err = ngx_errno;
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181
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182 if (err == NGX_ENOENT || err == NGX_ENOTDIR) {
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183 level = NGX_LOG_ERR;
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184 rc = NGX_HTTP_NOT_FOUND;
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185
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186 } else if (err == NGX_EACCES) {
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187 level = NGX_LOG_ERR;
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188 rc = NGX_HTTP_FORBIDDEN;
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189
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190 } else {
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191 level = NGX_LOG_CRIT;
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192 rc = NGX_HTTP_INTERNAL_SERVER_ERROR;
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193 }
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194
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195 ngx_log_error(level, r->connection->log, err,
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196 ngx_open_dir_n " \"%s\" failed", dname.data);
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197
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198 return rc;
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199 }
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200
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201 #if (NGX_SUPPRESS_WARN)
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202 /* MSVC thinks 'entries' may be used without having been initialized */
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203 ngx_memzero(&entries, sizeof(ngx_array_t));
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204 #endif
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205
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206 if (ngx_array_init(&entries, pool, 50, sizeof(ngx_http_autoindex_entry_t))
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207 == NGX_ERROR)
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208 {
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209 return ngx_http_autoindex_error(r, &dir, dname.data);
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210 }
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211
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212 fname.len = 0;
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213 #if (NGX_SUPPRESS_WARN)
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214 fname.data = NULL;
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215 #endif
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216
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217 for ( ;; ) {
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218 ngx_set_errno(0);
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219
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220 if (ngx_read_dir(&dir) == NGX_ERROR) {
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221 err = ngx_errno;
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222
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223 if (err != NGX_ENOMOREFILES) {
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224 ngx_log_error(NGX_LOG_CRIT, r->connection->log, err,
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225 ngx_read_dir_n " \"%s\" failed", dname.data);
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226 return ngx_http_autoindex_error(r, &dir, dname.data);
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227 }
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228
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229 break;
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230 }
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231
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232 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
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233 "http autoindex file: \"%s\"", ngx_de_name(&dir));
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234
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235 len = ngx_de_namelen(&dir);
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236
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237 if (len == 1 && ngx_de_name(&dir)[0] == '.') {
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238 continue;
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239 }
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240
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241 if (len == 2
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242 && ngx_de_name(&dir)[0] == '.'
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243 && ngx_de_name(&dir)[1] == '.')
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244 {
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245 continue;
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246 }
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247
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248 if (!dir.valid_info) {
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249
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250 if (dname.len + 1 + len > fname.len) {
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251 fname.len = dname.len + 1 + len + 32;
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252
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253 fname.data = ngx_palloc(pool, fname.len);
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254 if (fname.data == NULL) {
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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 err = ngx_errno;
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267
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268 if (err != NGX_ENOENT) {
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269 ngx_log_error(NGX_LOG_CRIT, r->connection->log, err,
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270 ngx_de_info_n " \"%s\" failed", fname.data);
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271 return ngx_http_autoindex_error(r, &dir, dname.data);
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272 }
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273
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274 if (ngx_de_link_info(fname.data, &dir) == NGX_FILE_ERROR) {
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275 ngx_log_error(NGX_LOG_CRIT, r->connection->log, ngx_errno,
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276 ngx_de_link_info_n " \"%s\" failed",
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277 fname.data);
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278 return ngx_http_autoindex_error(r, &dir, dname.data);
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279 }
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280 }
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281 }
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282
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283 entry = ngx_array_push(&entries);
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284 if (entry == NULL) {
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285 return ngx_http_autoindex_error(r, &dir, dname.data);
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286 }
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287
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288 entry->name.len = len;
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289 entry->escape = 2 * ngx_escape_uri(NULL, ngx_de_name(&dir), len,
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290 NGX_ESCAPE_HTML);
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291
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292 entry->name.data = ngx_palloc(pool, len + entry->escape + 1);
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293 if (entry->name.data == NULL) {
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294 return ngx_http_autoindex_error(r, &dir, dname.data);
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295 }
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296
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297 ngx_cpystrn(entry->name.data, ngx_de_name(&dir), len + 1);
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298
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299 entry->dir = ngx_de_is_dir(&dir);
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300 entry->mtime = ngx_de_mtime(&dir);
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301 entry->size = ngx_de_size(&dir);
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302 }
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303
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304 if (ngx_close_dir(&dir) == NGX_ERROR) {
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305 ngx_log_error(NGX_LOG_ALERT, r->connection->log, ngx_errno,
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306 ngx_close_dir_n " \"%s\" failed", dname.data);
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307 }
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308
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309 len = sizeof(title) - 1
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310 + r->uri.len
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311 + sizeof(header) - 1
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312 + r->uri.len
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313 + sizeof("</h1>") - 1
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314 + sizeof("<hr><pre><a href=\"../\">../</a>" CRLF) - 1
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315 + sizeof("</pre><hr>") - 1
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316 + sizeof(tail) - 1;
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317
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318 entry = entries.elts;
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319 for (i = 0; i < entries.nelts; i++) {
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320 len += sizeof("<a href=\"") - 1
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321 + 1 /* 1 is for "/" */
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322 + entry[i].name.len + entry[i].escape
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323 + sizeof("\">") - 1
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324 + NGX_HTTP_AUTOINDEX_NAME_LEN + sizeof(">") - 2
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325 + sizeof("</a>") - 1
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326 + sizeof(" 28-Sep-1970 12:00 ") - 1
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327 + 19
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328 + 2;
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329 }
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330
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331 b = ngx_create_temp_buf(r->pool, len);
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332 if (b == NULL) {
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333 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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334 }
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335
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336 if (entries.nelts > 1) {
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337 ngx_qsort(entry, (size_t) entries.nelts,
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338 sizeof(ngx_http_autoindex_entry_t),
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339 ngx_http_autoindex_cmp_entries);
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340 }
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341
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342 b->last = ngx_cpymem(b->last, title, sizeof(title) - 1);
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343 b->last = ngx_cpymem(b->last, r->uri.data, r->uri.len);
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344 b->last = ngx_cpymem(b->last, header, sizeof(header) - 1);
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345 b->last = ngx_cpymem(b->last, r->uri.data, r->uri.len);
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346 b->last = ngx_cpymem(b->last, "</h1>", sizeof("</h1>") - 1);
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347
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348 b->last = ngx_cpymem(b->last, "<hr><pre><a href=\"../\">../</a>" CRLF,
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349 sizeof("<hr><pre><a href=\"../\">../</a>" CRLF) - 1);
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350
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351 for (i = 0; i < entries.nelts; i++) {
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352 b->last = ngx_cpymem(b->last, "<a href=\"", sizeof("<a href=\"") - 1);
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353
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354 if (entry[i].escape) {
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355 ngx_escape_uri(b->last, entry[i].name.data, entry[i].name.len,
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356 NGX_ESCAPE_HTML);
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357
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358 b->last += entry[i].name.len + entry[i].escape;
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359
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360 } else {
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361 b->last = ngx_cpymem(b->last, entry[i].name.data,
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362 entry[i].name.len);
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363 }
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364
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365 if (entry[i].dir) {
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366 *b->last++ = '/';
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367 }
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368
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369 *b->last++ = '"';
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370 *b->last++ = '>';
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371
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372 b->last = ngx_cpystrn(b->last, entry[i].name.data,
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373 NGX_HTTP_AUTOINDEX_NAME_LEN + 1);
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374
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375 len = entry[i].name.len;
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376
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377 if (len > NGX_HTTP_AUTOINDEX_NAME_LEN) {
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378 b->last = ngx_cpymem(b->last - 3, "..></a>",
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379 sizeof("..></a>") - 1);
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380
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381 } else {
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382 if (entry[i].dir && NGX_HTTP_AUTOINDEX_NAME_LEN - len > 0) {
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383 *b->last++ = '/';
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384 len++;
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385 }
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386
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387 b->last = ngx_cpymem(b->last, "</a>", sizeof("</a>") - 1);
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388 ngx_memset(b->last, ' ', NGX_HTTP_AUTOINDEX_NAME_LEN - len);
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389 b->last += NGX_HTTP_AUTOINDEX_NAME_LEN - len;
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390 }
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391
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392 *b->last++ = ' ';
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393
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394 ngx_gmtime(entry[i].mtime, &tm);
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395
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396 b->last = ngx_sprintf(b->last, "%02d-%s-%d %02d:%02d ",
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397 tm.ngx_tm_mday,
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398 months[tm.ngx_tm_mon - 1],
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399 tm.ngx_tm_year,
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400 tm.ngx_tm_hour,
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401 tm.ngx_tm_min);
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402
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403 if (entry[i].dir) {
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404 b->last = ngx_cpymem(b->last, " -",
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405 sizeof(" -") - 1);
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406
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407 } else {
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408 b->last = ngx_sprintf(b->last, "%19O", entry[i].size);
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409 }
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410
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411 *b->last++ = CR;
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412 *b->last++ = LF;
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413 }
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414
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415 /* TODO: free temporary pool */
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416
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417 b->last = ngx_cpymem(b->last, "</pre><hr>", sizeof("</pre><hr>") - 1);
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418
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419 b->last = ngx_cpymem(b->last, tail, sizeof(tail) - 1);
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420
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421 r->headers_out.status = NGX_HTTP_OK;
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422 r->headers_out.content_length_n = b->last - b->pos;
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423 r->headers_out.content_type.len = sizeof("text/html") - 1;
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424 r->headers_out.content_type.data = (u_char *) "text/html";
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425
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426 rc = ngx_http_send_header(r);
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427
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428 if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) {
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429 return rc;
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430 }
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431
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58
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432 if (r->main == NULL) {
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433 b->last_buf = 1;
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434 }
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435
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58
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436 b->last_in_chain = 1;
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437
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50
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438 out.buf = b;
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439 out.next = NULL;
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440
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441 return ngx_http_output_filter(r, &out);
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442 }
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443
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444
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52
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445 static int ngx_libc_cdecl
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50
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446 ngx_http_autoindex_cmp_entries(const void *one, const void *two)
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447 {
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448 ngx_http_autoindex_entry_t *first = (ngx_http_autoindex_entry_t *) one;
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449 ngx_http_autoindex_entry_t *second = (ngx_http_autoindex_entry_t *) two;
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450
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451 if (first->dir && !second->dir) {
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452 /* move the directories to the start */
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453 return -1;
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454 }
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455
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456 if (!first->dir && second->dir) {
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457 /* move the directories to the start */
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458 return 1;
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459 }
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460
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461 return (int) ngx_strcmp(first->name.data, second->name.data);
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462 }
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463
|
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464
|
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465 #if 0
|
|
466
|
|
467 static ngx_buf_t *
|
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468 ngx_http_autoindex_alloc(ngx_http_autoindex_ctx_t *ctx, size_t size)
|
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469 {
|
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470 ngx_chain_t *cl;
|
|
471
|
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472 if (ctx->buf) {
|
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473
|
|
474 if ((size_t) (ctx->buf->end - ctx->buf->last) >= size) {
|
|
475 return ctx->buf;
|
|
476 }
|
|
477
|
|
478 ctx->size += ctx->buf->last - ctx->buf->pos;
|
|
479 }
|
|
480
|
|
481 ctx->buf = ngx_create_temp_buf(ctx->pool, ctx->alloc_size);
|
|
482 if (ctx->buf == NULL) {
|
|
483 return NULL;
|
|
484 }
|
|
485
|
|
486 cl = ngx_alloc_chain_link(ctx->pool);
|
|
487 if (cl == NULL) {
|
|
488 return NULL;
|
|
489 }
|
|
490
|
|
491 cl->buf = ctx->buf;
|
|
492 cl->next = NULL;
|
|
493
|
|
494 *ctx->last_out = cl;
|
|
495 ctx->last_out = &cl->next;
|
|
496
|
|
497 return ctx->buf;
|
|
498 }
|
|
499
|
|
500 #endif
|
|
501
|
|
502
|
|
503 static ngx_int_t
|
|
504 ngx_http_autoindex_error(ngx_http_request_t *r, ngx_dir_t *dir, u_char *name)
|
|
505 {
|
|
506 if (ngx_close_dir(dir) == NGX_ERROR) {
|
|
507 ngx_log_error(NGX_LOG_ALERT, r->connection->log, ngx_errno,
|
|
508 ngx_close_dir_n " \"%s\" failed", name);
|
|
509 }
|
|
510
|
|
511 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
512 }
|
|
513
|
|
514
|
|
515 static ngx_int_t
|
|
516 ngx_http_autoindex_init(ngx_cycle_t *cycle)
|
|
517 {
|
|
518 ngx_http_handler_pt *h;
|
|
519 ngx_http_core_main_conf_t *cmcf;
|
|
520
|
|
521 cmcf = ngx_http_cycle_get_module_main_conf(cycle, ngx_http_core_module);
|
|
522
|
|
523 h = ngx_array_push(&cmcf->phases[NGX_HTTP_CONTENT_PHASE].handlers);
|
|
524 if (h == NULL) {
|
|
525 return NGX_ERROR;
|
|
526 }
|
|
527
|
|
528 *h = ngx_http_autoindex_handler;
|
|
529
|
|
530 return NGX_OK;
|
|
531 }
|
|
532
|
|
533
|
|
534 static void *
|
|
535 ngx_http_autoindex_create_loc_conf(ngx_conf_t *cf)
|
|
536 {
|
|
537 ngx_http_autoindex_loc_conf_t *conf;
|
|
538
|
|
539 conf = ngx_palloc(cf->pool, sizeof(ngx_http_autoindex_loc_conf_t));
|
|
540 if (conf == NULL) {
|
|
541 return NGX_CONF_ERROR;
|
|
542 }
|
|
543
|
|
544 conf->enable = NGX_CONF_UNSET;
|
|
545
|
|
546 return conf;
|
|
547 }
|
|
548
|
|
549
|
|
550 static char *
|
|
551 ngx_http_autoindex_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child)
|
|
552 {
|
|
553 ngx_http_autoindex_loc_conf_t *prev = parent;
|
|
554 ngx_http_autoindex_loc_conf_t *conf = child;
|
|
555
|
|
556 ngx_conf_merge_value(conf->enable, prev->enable, 0);
|
|
557
|
|
558 return NGX_CONF_OK;
|
|
559 }
|