182
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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 #define NGX_HTTP_DAV_OFF 2
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13
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14 typedef struct {
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15 ngx_uint_t methods;
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186
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16 ngx_flag_t create_full_put_path;
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218
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17 ngx_uint_t access;
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182
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18 } ngx_http_dav_loc_conf_t;
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19
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20
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21 static ngx_int_t ngx_http_dav_handler(ngx_http_request_t *r);
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276
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22 static ngx_int_t ngx_http_dav_no_init(void *ctx, void *prev);
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272
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23 static ngx_int_t ngx_http_dav_noop(ngx_tree_ctx_t *ctx, ngx_str_t *path);
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24 static ngx_int_t ngx_http_dav_delete_dir(ngx_tree_ctx_t *ctx, ngx_str_t *path);
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25 static ngx_int_t ngx_http_dav_delete_file(ngx_tree_ctx_t *ctx, ngx_str_t *path);
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182
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26 static void ngx_http_dav_put_handler(ngx_http_request_t *r);
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186
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27 static ngx_int_t ngx_http_dav_error(ngx_http_request_t *, ngx_err_t err,
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28 ngx_int_t not_found, char *failed, u_char *path);
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29 static ngx_int_t ngx_http_dav_location(ngx_http_request_t *r, u_char *path);
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218
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30 static char *ngx_http_dav_access(ngx_conf_t *cf, ngx_command_t *cmd,
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31 void *conf);
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182
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32 static void *ngx_http_dav_create_loc_conf(ngx_conf_t *cf);
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33 static char *ngx_http_dav_merge_loc_conf(ngx_conf_t *cf,
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34 void *parent, void *child);
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230
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35 static ngx_int_t ngx_http_dav_init(ngx_conf_t *cf);
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182
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36
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37
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38 static ngx_conf_bitmask_t ngx_http_dav_methods_mask[] = {
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39 { ngx_string("off"), NGX_HTTP_DAV_OFF },
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40 { ngx_string("put"), NGX_HTTP_PUT },
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41 { ngx_string("delete"), NGX_HTTP_DELETE },
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186
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42 { ngx_string("mkcol"), NGX_HTTP_MKCOL },
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182
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43 { ngx_null_string, 0 }
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44 };
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45
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46
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47 static ngx_command_t ngx_http_dav_commands[] = {
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48
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49 { ngx_string("dav_methods"),
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50 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE,
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51 ngx_conf_set_bitmask_slot,
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52 NGX_HTTP_LOC_CONF_OFFSET,
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53 offsetof(ngx_http_dav_loc_conf_t, methods),
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54 &ngx_http_dav_methods_mask },
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55
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186
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56 { ngx_string("create_full_put_path"),
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57 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
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58 ngx_conf_set_flag_slot,
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59 NGX_HTTP_LOC_CONF_OFFSET,
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60 offsetof(ngx_http_dav_loc_conf_t, create_full_put_path),
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61 NULL },
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62
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218
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63 { ngx_string("dav_access"),
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224
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64 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE123,
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218
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65 ngx_http_dav_access,
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66 NGX_HTTP_LOC_CONF_OFFSET,
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67 0,
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68 NULL },
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69
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182
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70 ngx_null_command
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71 };
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72
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73
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216
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74 static ngx_http_module_t ngx_http_dav_module_ctx = {
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182
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75 NULL, /* preconfiguration */
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230
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76 ngx_http_dav_init, /* postconfiguration */
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182
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77
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78 NULL, /* create main configuration */
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79 NULL, /* init main configuration */
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80
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81 NULL, /* create server configuration */
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82 NULL, /* merge server configuration */
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83
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84 ngx_http_dav_create_loc_conf, /* create location configuration */
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85 ngx_http_dav_merge_loc_conf /* merge location configuration */
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86 };
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87
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88
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89 ngx_module_t ngx_http_dav_module = {
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90 NGX_MODULE_V1,
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91 &ngx_http_dav_module_ctx, /* module context */
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92 ngx_http_dav_commands, /* module directives */
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93 NGX_HTTP_MODULE, /* module type */
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94 NULL, /* init master */
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230
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95 NULL, /* init module */
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182
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96 NULL, /* init process */
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97 NULL, /* init thread */
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98 NULL, /* exit thread */
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99 NULL, /* exit process */
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100 NULL, /* exit master */
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101 NGX_MODULE_V1_PADDING
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102 };
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103
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104
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105 static ngx_int_t
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106 ngx_http_dav_handler(ngx_http_request_t *r)
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107 {
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186
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108 char *failed;
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248
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109 size_t root;
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182
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110 ngx_int_t rc;
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111 ngx_str_t path;
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272
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112 ngx_tree_ctx_t tree;
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186
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113 ngx_file_info_t fi;
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268
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114 ngx_table_elt_t *depth;
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182
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115 ngx_http_dav_loc_conf_t *dlcf;
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116
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117 /* TODO: Win32 */
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118 if (r->zero_in_uri) {
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119 return NGX_DECLINED;
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120 }
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121
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122 dlcf = ngx_http_get_module_loc_conf(r, ngx_http_dav_module);
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123
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124 if (!(r->method & dlcf->methods)) {
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125 return NGX_DECLINED;
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126 }
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127
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128 switch (r->method) {
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129
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130 case NGX_HTTP_PUT:
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131
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132 if (r->uri.data[r->uri.len - 1] == '/') {
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276
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133 return NGX_HTTP_BAD_REQUEST;
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182
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134 }
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135
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136 r->request_body_in_file_only = 1;
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137 r->request_body_in_persistent_file = 1;
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138 r->request_body_delete_incomplete_file = 1;
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139 r->request_body_file_group_access = 1;
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186
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140 r->request_body_file_log_level = 0;
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182
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141
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142 rc = ngx_http_read_client_request_body(r, ngx_http_dav_put_handler);
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143
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144 if (rc >= NGX_HTTP_SPECIAL_RESPONSE) {
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145 return rc;
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146 }
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147
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148 return NGX_DONE;
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149
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150 case NGX_HTTP_DELETE:
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151
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186
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152 if (r->headers_in.content_length_n > 0) {
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153 return NGX_HTTP_UNSUPPORTED_MEDIA_TYPE;
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154 }
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155
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156 rc = ngx_http_discard_body(r);
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157
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158 if (rc != NGX_OK && rc != NGX_AGAIN) {
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159 return rc;
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182
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160 }
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161
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248
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162 ngx_http_map_uri_to_path(r, &path, &root, 0);
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182
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163
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164 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
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165 "http delete filename: \"%s\"", path.data);
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166
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186
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167 if (ngx_file_info(path.data, &fi) != -1) {
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168
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169 if (ngx_is_dir(&fi)) {
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170
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268
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171 if (r->uri.data[r->uri.len - 1] != '/') {
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172 return NGX_HTTP_BAD_REQUEST;
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173 }
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174
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175 depth = r->headers_in.depth;
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176
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177 if (depth
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178 && (depth->value.len != sizeof("infinity") - 1
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179 || ngx_strcmp(depth->value.data, "infinity") != 0))
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186
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180 {
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181 return NGX_HTTP_BAD_REQUEST;
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182 }
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183
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272
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184 path.len -= 2;
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185
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186 tree.init_handler = ngx_http_dav_no_init;
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187 tree.file_handler = ngx_http_dav_delete_file;
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188 tree.pre_tree_handler = ngx_http_dav_noop;
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189 tree.post_tree_handler = ngx_http_dav_delete_dir;
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190 tree.spec_handler = ngx_http_dav_delete_file;
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191 tree.data = NULL;
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276
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192 tree.alloc = 0;
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272
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193 tree.log = r->connection->log;
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194
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195 if (ngx_walk_tree(&tree, &path) == NGX_OK) {
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196
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197 if (ngx_delete_dir(path.data) != NGX_FILE_ERROR) {
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198 return NGX_HTTP_NO_CONTENT;
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199 }
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200
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186
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201 }
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202
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203 failed = ngx_delete_dir_n;
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204
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205 } else {
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182
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206
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186
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207 if (r->uri.data[r->uri.len - 1] == '/') {
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208 return NGX_HTTP_BAD_REQUEST;
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209 }
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210
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268
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211 depth = r->headers_in.depth;
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212
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213 if (depth
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214 && depth->value.len == 1
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215 && depth->value.data[0] == '1')
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186
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216 {
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217 return NGX_HTTP_BAD_REQUEST;
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218 }
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219
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220 if (ngx_delete_file(path.data) != NGX_FILE_ERROR) {
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221 return NGX_HTTP_NO_CONTENT;
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222 }
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223
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224 failed = ngx_delete_file_n;
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225 }
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226
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227 } else {
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228 failed = ngx_file_info_n;
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182
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229 }
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230
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186
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231 return ngx_http_dav_error(r, ngx_errno, NGX_HTTP_NOT_FOUND, failed,
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232 path.data);
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233
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234 case NGX_HTTP_MKCOL:
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235
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236 if (r->uri.data[r->uri.len - 1] != '/') {
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237 return NGX_DECLINED;
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238 }
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239
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240 if (r->headers_in.content_length_n > 0) {
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241 return NGX_HTTP_UNSUPPORTED_MEDIA_TYPE;
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242 }
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243
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244 rc = ngx_http_discard_body(r);
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245
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246 if (rc != NGX_OK && rc != NGX_AGAIN) {
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247 return rc;
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248 }
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249
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248
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250 ngx_http_map_uri_to_path(r, &path, &root, 0);
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186
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251
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252 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
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253 "http mkcol path: \"%s\"", path.data);
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254
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218
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255 if (ngx_create_dir(path.data, dlcf->access) != NGX_FILE_ERROR) {
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186
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256 if (ngx_http_dav_location(r, path.data) != NGX_OK) {
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257 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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258 }
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259
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260 return NGX_HTTP_CREATED;
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261 }
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262
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263 return ngx_http_dav_error(r, ngx_errno, NGX_HTTP_CONFLICT,
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264 ngx_create_dir_n, path.data);
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182
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265 }
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266
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267 return NGX_DECLINED;
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268 }
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269
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270
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272
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271 static ngx_int_t
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276
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272 ngx_http_dav_no_init(void *ctx, void *prev)
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272
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273 {
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274 return NGX_OK;
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275 }
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276
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277
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278 static ngx_int_t
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279 ngx_http_dav_noop(ngx_tree_ctx_t *ctx, ngx_str_t *path)
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280 {
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281 return NGX_OK;
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282 }
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283
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284
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285 static ngx_int_t
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286 ngx_http_dav_delete_dir(ngx_tree_ctx_t *ctx, ngx_str_t *path)
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287 {
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288 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, ctx->log, 0,
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289 "http delete dir: \"%s\"", path->data);
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290
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291 ngx_delete_dir(path->data);
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292
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293 return NGX_OK;
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294 }
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295
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296
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297 static ngx_int_t
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298 ngx_http_dav_delete_file(ngx_tree_ctx_t *ctx, ngx_str_t *path)
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299 {
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300 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, ctx->log, 0,
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301 "http delete file: \"%s\"", path->data);
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302
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303 ngx_delete_file(path->data);
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304
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305 return NGX_OK;
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306 }
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307
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308
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182
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309 static void
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310 ngx_http_dav_put_handler(ngx_http_request_t *r)
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311 {
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218
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312 char *failed;
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313 u_char *name;
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248
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314 size_t root;
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230
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315 time_t date;
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186
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316 ngx_err_t err;
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317 ngx_str_t *temp, path;
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318 ngx_uint_t status;
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319 ngx_file_info_t fi;
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320 ngx_http_dav_loc_conf_t *dlcf;
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182
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321
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248
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322 ngx_http_map_uri_to_path(r, &path, &root, 0);
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182
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323
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324 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
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325 "http put filename: \"%s\"", path.data);
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326
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327 temp = &r->request_body->temp_file->file.name;
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328
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329 if (ngx_file_info(path.data, &fi) == -1) {
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330 status = NGX_HTTP_CREATED;
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331
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332 } else {
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333 status = NGX_HTTP_NO_CONTENT;
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212
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334
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335 if (ngx_is_dir(&fi)) {
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336 ngx_log_error(NGX_LOG_ERR, r->connection->log, NGX_EISDIR,
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337 "\"%s\" could not be created", path.data);
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182
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338
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212
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339 if (ngx_delete_file(temp->data) == NGX_FILE_ERROR) {
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340 ngx_log_error(NGX_LOG_CRIT, r->connection->log, ngx_errno,
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341 ngx_delete_file_n " \"%s\" failed",
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342 temp->data);
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343 }
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344
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345 ngx_http_finalize_request(r, NGX_HTTP_CONFLICT);
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346 return;
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210
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347 }
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186
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348 }
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349
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218
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350 dlcf = ngx_http_get_module_loc_conf(r, ngx_http_dav_module);
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351
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352 #if !(NGX_WIN32)
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353
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354 if (ngx_change_file_access(temp->data, dlcf->access & ~0111)
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355 == NGX_FILE_ERROR)
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356 {
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357 err = ngx_errno;
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358 failed = ngx_change_file_access_n;
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359 name = temp->data;
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360
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361 goto failed;
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362 }
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363
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364 #endif
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365
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230
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366 if (r->headers_in.date) {
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367 date = ngx_http_parse_time(r->headers_in.date->value.data,
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368 r->headers_in.date->value.len);
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369
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370 if (date != NGX_ERROR) {
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371 if (ngx_set_file_time(temp->data,
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372 r->request_body->temp_file->file.fd, date)
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373 != NGX_OK)
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374 {
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375 err = ngx_errno;
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376 failed = ngx_set_file_time_n;
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377 name = temp->data;
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378
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379 goto failed;
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380 }
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381 }
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382 }
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383
|
218
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384 failed = ngx_rename_file_n;
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385 name = path.data;
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386
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182
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387 if (ngx_rename_file(temp->data, path.data) != NGX_FILE_ERROR) {
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388 goto ok;
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389 }
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390
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391 err = ngx_errno;
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392
|
186
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393 if (err == NGX_ENOENT) {
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394
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395 if (dlcf->create_full_put_path) {
|
218
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396 err = ngx_create_full_path(path.data, dlcf->access);
|
186
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397
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398 if (err == 0) {
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399 if (ngx_rename_file(temp->data, path.data) != NGX_FILE_ERROR) {
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400 goto ok;
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401 }
|
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402
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403 err = ngx_errno;
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404 }
|
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405 }
|
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406 }
|
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407
|
182
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408 #if (NGX_WIN32)
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409
|
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410 if (err == NGX_EEXIST) {
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411 if (ngx_win32_rename_file(temp, &path, r->pool) != NGX_ERROR) {
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412
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413 if (ngx_rename_file(temp->data, path.data) != NGX_FILE_ERROR) {
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414 goto ok;
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415 }
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416 }
|
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417
|
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418 err = ngx_errno;
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419 }
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420
|
230
|
421 #endif
|
218
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422
|
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423 failed:
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424
|
210
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425 if (ngx_delete_file(temp->data) == NGX_FILE_ERROR) {
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426 ngx_log_error(NGX_LOG_CRIT, r->connection->log, ngx_errno,
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427 ngx_delete_file_n " \"%s\" failed",
|
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428 temp->data);
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|
429 }
|
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430
|
218
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431 ngx_http_finalize_request(r,
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432 ngx_http_dav_error(r, err, NGX_HTTP_CONFLICT, failed, name));
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433
|
182
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434 return;
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435
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436 ok:
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437
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438 if (status == NGX_HTTP_CREATED) {
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186
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439 if (ngx_http_dav_location(r, path.data) != NGX_OK) {
|
182
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440 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
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441 return;
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442 }
|
188
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443
|
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444 r->headers_out.content_length_n = 0;
|
182
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445 }
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446
|
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447 r->headers_out.status = status;
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448 r->header_only = 1;
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449
|
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450 ngx_http_finalize_request(r, ngx_http_send_header(r));
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451 return;
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452 }
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453
|
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454
|
186
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455 static ngx_int_t
|
|
456 ngx_http_dav_error(ngx_http_request_t *r, ngx_err_t err, ngx_int_t not_found,
|
|
457 char *failed, u_char *path)
|
|
458 {
|
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459 ngx_int_t rc;
|
|
460 ngx_uint_t level;
|
|
461
|
|
462 if (err == NGX_ENOENT || err == NGX_ENOTDIR || err == NGX_ENAMETOOLONG) {
|
|
463 level = NGX_LOG_ERR;
|
|
464 rc = not_found;
|
|
465
|
|
466 } else if (err == NGX_EACCES || err == NGX_EPERM) {
|
|
467 level = NGX_LOG_ERR;
|
|
468 rc = NGX_HTTP_FORBIDDEN;
|
|
469
|
|
470 } else if (err == NGX_EEXIST) {
|
|
471 level = NGX_LOG_ERR;
|
|
472 rc = NGX_HTTP_NOT_ALLOWED;
|
|
473
|
|
474 } else if (err == NGX_ENOSPC) {
|
|
475 level = NGX_LOG_CRIT;
|
|
476 rc = NGX_HTTP_INSUFFICIENT_STORAGE;
|
|
477
|
|
478 } else {
|
|
479 level = NGX_LOG_CRIT;
|
|
480 rc = NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
481 }
|
|
482
|
|
483 ngx_log_error(level, r->connection->log, err,
|
|
484 "%s \"%s\" failed", failed, path);
|
|
485
|
|
486 return rc;
|
|
487 }
|
|
488
|
|
489
|
|
490 static ngx_int_t
|
|
491 ngx_http_dav_location(ngx_http_request_t *r, u_char *path)
|
|
492 {
|
|
493 u_char *location;
|
|
494 ngx_http_core_loc_conf_t *clcf;
|
|
495
|
|
496 r->headers_out.location = ngx_palloc(r->pool, sizeof(ngx_table_elt_t));
|
|
497 if (r->headers_out.location == NULL) {
|
|
498 return NGX_ERROR;
|
|
499 }
|
|
500
|
|
501 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
502
|
|
503 if (!clcf->alias && clcf->root_lengths == NULL) {
|
|
504 location = path + clcf->root.len;
|
|
505
|
|
506 } else {
|
|
507 location = ngx_palloc(r->pool, r->uri.len);
|
|
508 if (location == NULL) {
|
|
509 return NGX_ERROR;
|
|
510 }
|
|
511
|
|
512 ngx_memcpy(location, r->uri.data, r->uri.len);
|
|
513 }
|
|
514
|
|
515 /*
|
|
516 * we do not need to set the r->headers_out.location->hash and
|
|
517 * r->headers_out.location->key fields
|
|
518 */
|
|
519
|
|
520 r->headers_out.location->value.len = r->uri.len;
|
|
521 r->headers_out.location->value.data = location;
|
|
522
|
|
523 return NGX_OK;
|
|
524 }
|
|
525
|
|
526
|
218
|
527 static char *
|
|
528 ngx_http_dav_access(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
529 {
|
|
530 ngx_http_dav_loc_conf_t *lcf = conf;
|
|
531
|
|
532 u_char *p;
|
|
533 ngx_str_t *value;
|
|
534 ngx_uint_t i, right, shift;
|
|
535
|
|
536 if (lcf->access != NGX_CONF_UNSET_UINT) {
|
|
537 return "is duplicate";
|
|
538 }
|
|
539
|
|
540 value = cf->args->elts;
|
|
541
|
|
542 lcf->access = 0700;
|
|
543
|
268
|
544 for (i = 1; i < cf->args->nelts; i++) {
|
218
|
545
|
|
546 p = value[i].data;
|
|
547
|
|
548 if (ngx_strncmp(p, "user:", sizeof("user:") - 1) == 0) {
|
|
549 shift = 6;
|
|
550 p += sizeof("user:") - 1;
|
|
551
|
|
552 } else if (ngx_strncmp(p, "group:", sizeof("group:") - 1) == 0) {
|
|
553 shift = 3;
|
|
554 p += sizeof("group:") - 1;
|
|
555
|
|
556 } else if (ngx_strncmp(p, "all:", sizeof("all:") - 1) == 0) {
|
|
557 shift = 0;
|
|
558 p += sizeof("all:") - 1;
|
|
559
|
|
560 } else {
|
|
561 goto invalid;
|
|
562 }
|
|
563
|
|
564 if (ngx_strcmp(p, "rw") == 0) {
|
|
565 right = 7;
|
|
566
|
|
567 } else if (ngx_strcmp(p, "r") == 0) {
|
|
568 right = 5;
|
|
569
|
|
570 } else {
|
|
571 goto invalid;
|
|
572 }
|
|
573
|
|
574 lcf->access += right << shift;
|
|
575 }
|
|
576
|
|
577 return NGX_CONF_OK;
|
|
578
|
|
579 invalid:
|
|
580
|
|
581 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
582 "invalid value \"%V\"", &value[i]);
|
|
583 return NGX_CONF_ERROR;
|
|
584 }
|
|
585
|
|
586
|
182
|
587 static void *
|
|
588 ngx_http_dav_create_loc_conf(ngx_conf_t *cf)
|
|
589 {
|
|
590 ngx_http_dav_loc_conf_t *conf;
|
|
591
|
|
592 conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_dav_loc_conf_t));
|
|
593 if (conf == NULL) {
|
|
594 return NGX_CONF_ERROR;
|
|
595 }
|
|
596
|
|
597 /*
|
|
598 * set by ngx_pcalloc():
|
|
599 *
|
|
600 * conf->methods = 0;
|
|
601 */
|
|
602
|
186
|
603 conf->create_full_put_path = NGX_CONF_UNSET;
|
218
|
604 conf->access = NGX_CONF_UNSET_UINT;
|
186
|
605
|
182
|
606 return conf;
|
|
607 }
|
|
608
|
|
609
|
|
610 static char *
|
|
611 ngx_http_dav_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child)
|
|
612 {
|
|
613 ngx_http_dav_loc_conf_t *prev = parent;
|
|
614 ngx_http_dav_loc_conf_t *conf = child;
|
|
615
|
|
616 ngx_conf_merge_bitmask_value(conf->methods, prev->methods,
|
186
|
617 (NGX_CONF_BITMASK_SET|NGX_HTTP_DAV_OFF));
|
|
618
|
|
619 ngx_conf_merge_value(conf->create_full_put_path, prev->create_full_put_path,
|
|
620 0);
|
182
|
621
|
218
|
622 ngx_conf_merge_uint_value(conf->access, prev->access, 0600);
|
|
623
|
182
|
624 return NGX_CONF_OK;
|
|
625 }
|
|
626
|
|
627
|
|
628 static ngx_int_t
|
230
|
629 ngx_http_dav_init(ngx_conf_t *cf)
|
182
|
630 {
|
|
631 ngx_http_handler_pt *h;
|
|
632 ngx_http_core_main_conf_t *cmcf;
|
|
633
|
230
|
634 cmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_core_module);
|
182
|
635
|
|
636 h = ngx_array_push(&cmcf->phases[NGX_HTTP_CONTENT_PHASE].handlers);
|
|
637 if (h == NULL) {
|
|
638 return NGX_ERROR;
|
|
639 }
|
|
640
|
|
641 *h = ngx_http_dav_handler;
|
|
642
|
|
643 return NGX_OK;
|
|
644 }
|