src/server/config/objconf.c

Tue, 12 Sep 2023 18:08:11 +0200

author
Olaf Wintermann <olaf.wintermann@gmail.com>
date
Tue, 12 Sep 2023 18:08:11 +0200
changeset 511
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parent 490
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permissions
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update uwproj

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1 /*
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2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
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3 *
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4 * Copyright 2013 Olaf Wintermann. All rights reserved.
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5 *
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6 * Redistribution and use in source and binary forms, with or without
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7 * modification, are permitted provided that the following conditions are met:
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8 *
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9 * 1. Redistributions of source code must retain the above copyright
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10 * notice, this list of conditions and the following disclaimer.
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11 *
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12 * 2. Redistributions in binary form must reproduce the above copyright
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13 * notice, this list of conditions and the following disclaimer in the
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14 * documentation and/or other materials provided with the distribution.
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15 *
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16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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26 * POSSIBILITY OF SUCH DAMAGE.
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27 */
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28
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29 #include "objconf.h"
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30 #include "logging.h"
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31
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32 #include <string.h>
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33
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34 #include <cx/utils.h>
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35
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36 /* dev notes:
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37 *
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38 * to free ObjectConfig, free:
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39 * line dlist
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40 * mempool
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41 * object
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42 */
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43
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44 ObjectConfig *load_object_config(char *file) {
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45 FILE *in = fopen(file, "r");
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46 if(in == NULL) {
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47 return NULL;
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48 }
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49
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50 ObjectConfig *conf = malloc(sizeof(ObjectConfig));
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51 conf->parser.parse = objconf_parse;
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52 conf->file = file;
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53 //conf->conditions = NULL;
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54 conf->levels = NULL;
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55 conf->objects = cxLinkedListCreate(cxDefaultAllocator, NULL, CX_STORE_POINTERS);
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56 //conf->lines = NULL;
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57
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58 int r = cfg_parse_basic_file((ConfigParser*)conf, in);
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59 if(r != 0) {
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60 // TODO: free
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61 return NULL;
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62 }
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63
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64 fclose(in);
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65
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66 return conf;
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67 }
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68
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69 ObjectConfig2* objectconf_load(const char *file) {
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70 CxMempool *mp = cxBasicMempoolCreate(512);
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71 if(!mp) {
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72 return NULL;
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73 }
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74
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75 // setup parser
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76 ConfigParser2 parser;
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77 memset(&parser, 0, sizeof(ConfigParser2));
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78 parser.mp = mp;
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79 parser.filename = file;
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80 parser.delim = "()/*%";
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81 parser.validateDirective = objectconf_validate_directive;
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82 parser.validateObjBegin = objectconf_validate_objbegin;
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83 parser.validateObjEnd = objectconf_validate_objend;
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84 parser.allow_hierarchy = 1;
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85
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86 ConfigNode *obj_config = serverconfig_load_file(&parser, file);
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87 if(!obj_config) {
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88 cxMempoolDestroy(mp);
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89 return NULL;
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90 }
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91
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92 ObjectConfig2 *conf = cxMalloc(mp->allocator, sizeof(ObjectConfig2));
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93 if(!conf) {
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94 cxMempoolDestroy(mp);
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95 return NULL;
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96 }
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97
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98 conf->mp = mp;
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99 conf->root = obj_config;
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100
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101 return conf;
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102 }
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103
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104 void objectconf_free(ObjectConfig2 *objconf) {
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105 cxMempoolDestroy(objconf->mp);
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106 }
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107
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108 int objectconf_validate_directive(ConfigParser2 *parser, ConfigNode *node) {
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109 // It is possible that this function is called for Objects
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110 // if { is on the next line
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111 // It may be possible to fix the parser to not do that, but it is fine
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112 // to just deal with that here
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113
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114 // ignore if node->name is an Object name like
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115 // Object, Client, If, Else IfElse
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116 const char *objnames[] = { "Object", "Client", "If", "ElseIf", "Else" };
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117 size_t typeindex;
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118 if(!serverconfig_validate_directive_name(node, objnames, 5, &typeindex)) {
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119 return 0;
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120 }
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121
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122 // now check directive type
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123 const char *dirtypes[] = { "AuthTrans", "NameTrans", "PathCheck", "ObjectType", "Service", "AddLog", "Error" };
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124 if(serverconfig_validate_directive_name(node, dirtypes, 7, &typeindex)) {
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125 return 1;
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126 }
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127
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128 // directives must have parameter names
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129 ConfigParam *param_err;
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130 if(serverconfig_check_param_names(node, &param_err)) {
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131 return 1;
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132 }
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133
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134 // check if the fn parameter exists
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135 cxstring fn = serverconfig_directive_get_arg(node, cx_str("fn"));
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136 if(fn.length == 0) {
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137 return 1;
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138 }
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139
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140 return 0;
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141 }
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142
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143 static int validate_else_node(ConfigNode *node) {
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144 // previous node must be "If" or "ElseIf"
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145 ConfigNode *prev = serverconfig_previous_dir_or_obj(node);
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146 const char *allowed_prev_types[] = { "If", "ElseIf" };
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147 size_t typeindex;
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148 if(serverconfig_validate_directive_name(prev, allowed_prev_types, 2, &typeindex)) {
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149 return 1; // prevous node (not counting space, comments) is not "If" or "Else"
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150 }
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151
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152 // "Else" must have no args
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153 return node->args ? 1 : 0;
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154 }
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155
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156 static int validate_elseif_node(ConfigNode *node) {
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157 // the previous node must be "If" or "IfElse"
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158 // in case if "IfElse", we also have to check all previous nodes, until
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159 // we find the starting "If" node
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160 const char *allowed_prev_types[] = { "If", "ElseIf" };
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161 size_t typeindex;
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162 ConfigNode *prev = serverconfig_previous_dir_or_obj(node);
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163 while(prev) {
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164 if(serverconfig_validate_directive_name(prev, allowed_prev_types, 2, &typeindex)) {
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165 return 1; // previous node was not "If" or "ElseIf"
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166 }
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167 // we found a valid "If" node, the whole construct is valid
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168 if(typeindex == 0) {
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169 return 0;
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170 }
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171
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172 prev = serverconfig_previous_dir_or_obj(node);
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173 }
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174 // at this point we found only "IfElse" nodes, but no "If" node
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175 return 1;
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176 }
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177
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178 int objectconf_validate_objbegin(ConfigParser2 *parser, ConfigNode *node) {
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179 // get object type
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180 const char *objnames[] = { "Object", "Client", "If", "ElseIf", "Else" };
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181 size_t typeindex;
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182 if(serverconfig_validate_directive_name(node, objnames, 5, &typeindex)) {
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183 return 1; // unknown object type
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184 }
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185
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186 // some special requirements for "Else" node
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187 if(typeindex == 4) {
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188 // type is "Else"
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189 return validate_else_node(node);
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190 }
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191
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192 // check "ElseIf" was used after "If" or "IfElse"
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193 if(typeindex == 3 && validate_elseif_node(node)) {
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194 return 1;
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195 }
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196
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197 // only Object must have a name/value arg, other types can have more
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198 // complex parameters
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199 if(typeindex == 0) {
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200 // type is "Object"
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201 ConfigParam *err;
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202 if(serverconfig_check_param_names(node, &err)) {
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203 return 1;
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204 }
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205 return 0;
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206 }
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207
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208 // all remaining object types must have arguments, but don't check more
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209 return node->args ? 0 : 1;
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210 }
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211
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212 int objectconf_validate_objend(ConfigParser2 *parser, ConfigNode *node) {
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213 return 0;
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214 }
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215
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216
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217 void free_object_config(ObjectConfig *conf) {
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218 // free other lists
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219 if(conf->levels) {
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220 //ucx_list_free(conf->levels);
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221 }
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222
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223 // free mempool
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224 //ucx_mempool_destroy(conf->parser.mp->pool);
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225 free(conf);
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226 }
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227
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228
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229
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230 int objconf_parse(void *p, ConfigLine *begin, ConfigLine *end, cxmutstr line) {
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231 ObjectConfig *conf = p;
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232
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233 begin->type = cfg_get_line_type(line);
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234 switch(begin->type) {
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235 case LINE_BEGIN_TAG: {
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236 ConfigTag *tag = cfg_parse_begin_tag(line, conf->parser.mp);
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237 if(tag == NULL) {
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238 ws_cfg_log(LOG_FAILURE, "Parse error in %s", conf->file);
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239 exit(-1); // TODO: better error handling
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240 }
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241 tag->begin = begin;
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242 tag->end = end;
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243 tag->type_num = cfg_get_tag_type(cx_strcast(tag->name));
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244 //printf("line {%s}\n", cx_strdub(ll).ptr);
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245 if(objconf_on_begin_tag(conf, tag) != 0) {
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246 fprintf(stderr, "1error\n");
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247 exit(-1);
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248 }
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249 break;
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250 }
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251 case LINE_END_TAG: {
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252 cxmutstr tag = cfg_get_end_tag_name(line);
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253 if(objconf_on_end_tag(conf, tag) != 0) {
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254 fprintf(stderr, "2error\n");
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255 exit(-1);
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256 }
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257
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258 break;
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259 }
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260 case LINE_DIRECTIVE: {
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261 ConfigDirective *dir = cfg_parse_directive(
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262 line,
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263 conf->parser.mp);
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264 dir->begin = begin;
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265 dir->end = end;
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266 if(objconf_on_directive(conf, dir) != 0) {
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267 fprintf(stderr, "3error\n");
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268 exit(-1);
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269 }
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270 }
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271 }
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272 return 0;
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273 }
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274
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275 int objconf_on_begin_tag(ObjectConfig *conf, ConfigTag *tag) {
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276 CxAllocator *mp = conf->parser.mp;
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277 if(tag->type_num != TAG_OBJECT) {
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278 ConfigParserLevel *l = conf->levels;
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279 if(l->tag->type_num != TAG_OBJECT) {
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280 tag->parent = l->tag;
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281 }
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282 }
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283
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284
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285 switch(tag->type_num) {
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286 case TAG_OBJECT: {
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287 ConfigObject *obj = OBJ_NEW_N(mp, ConfigObject);
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288 obj->begin = tag->begin;
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289 obj->end = tag->end;
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290
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291 obj->name = cfg_param_get(tag->param, cx_str("name"));
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292 obj->ppath = cfg_param_get(tag->param, cx_str("ppath"));
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293
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294 conf->obj = obj;
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295 //conf->objects = ucx_list_append_a(mp, conf->objects, obj);
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296 cxListAdd(conf->objects, obj);
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297
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298 // create tree level object
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299 ConfigParserLevel *lvl = OBJ_NEW(mp, ConfigParserLevel);
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300 lvl->iftag = NULL;
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301 lvl->levelnum = 1;
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302 lvl->tag = tag;
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303 lvl->next = NULL;
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304 //conf->levels = ucx_list_prepend_a(mp, conf->levels, lvl);
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305 CFG_LEVEL_PREPEND(&conf->levels, lvl);
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306
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307 break;
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308 }
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309 case TAG_IF: {
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310 // create tree level object
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311 ConfigParserLevel *last_lvl = conf->levels;
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312
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313 ConfigParserLevel *lvl = OBJ_NEW(mp, ConfigParserLevel);
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314
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315 lvl->iftag = NULL;
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316 lvl->levelnum = last_lvl->levelnum + 1;
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317 lvl->tag = tag;
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318 //conf->levels = ucx_list_prepend_a(mp, conf->levels, lvl);
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319 CFG_LEVEL_PREPEND(&conf->levels, lvl);
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320 last_lvl->iftag = tag;
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321
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322 break;
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323 }
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324 case TAG_ELSEIF: {
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325 }
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326 case TAG_ELSE: {
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327 // create tree level object
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328 ConfigParserLevel *last_lvl = conf->levels;
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329 tag->iftag = last_lvl->iftag;
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330
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331 ConfigParserLevel *lvl = OBJ_NEW(
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332 conf->parser.mp,
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333 ConfigParserLevel);
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334
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335 lvl->iftag = last_lvl->tag;
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336 lvl->levelnum = last_lvl->levelnum + 1;
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337 lvl->tag = tag;
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338 //conf->levels = ucx_list_prepend(conf->levels, lvl);
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339 CFG_LEVEL_PREPEND(&conf->levels, lvl);
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340
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341 break;
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342 }
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343 case TAG_CLIENT: {
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344 // create tree level object
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345
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346 // TODO
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347
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348 break;
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349 }
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350 default: {
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351 ws_cfg_log(LOG_FAILURE, "objconf: unknown tag");
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352 return 1;
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353 }
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354 }
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355
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356 return 0;
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357 }
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358
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359 int objconf_on_end_tag(ObjectConfig *conf, cxmutstr tagname) {
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360 int type = cfg_get_tag_type(cx_strcast(tagname));
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361 if(type == -1) {
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362 ws_cfg_log(LOG_FAILURE, "objconf: unknown tag");
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363 return 1;
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364 } else {
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365 if(type == TAG_OBJECT) {
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366 conf->obj = NULL;
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367 }
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368
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369 // remove level
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370 /*
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371 conf->levels = ucx_list_remove_a(
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372 conf->parser.mp,
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373 conf->levels,
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374 conf->levels);
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375 */
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376 conf->levels = conf->levels->next;
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377 }
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378
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379 return 0;
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380 }
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381
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382 int objconf_on_directive(ObjectConfig *conf, ConfigDirective *dir) {
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383 ConfigParserLevel *lvl = conf->levels;
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384
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385 // check if we have a condition for the directive
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386 // if the level tag is not an object tag, use it as condition
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387 if(lvl->tag->type_num != TAG_OBJECT) {
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388 dir->condition = lvl->tag;
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389 }
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390
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391 // add directive to current object
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392 /*
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393 conf->obj->directives[dir->type_num] = ucx_list_append_a(
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diff changeset
394 conf->parser.mp,
16
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395 conf->obj->directives[dir->type_num],
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396 dir);
415
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397 */
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398
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399 ConfigDirectiveList *dir_entry = cxMalloc(conf->parser.mp, sizeof(ConfigDirectiveList));
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400 dir_entry->directive = dir;
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401 dir_entry->next = NULL;
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402 CFG_DIRECTIVES_ADD(&conf->obj->directives[dir->type_num], dir_entry);
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parents:
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403
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404 return 0;
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parents:
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405 }
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parents:
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406

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