src/server/config/conf.c

Sun, 26 Feb 2012 19:51:14 +0100

author
Olaf Wintermann <olaf.wintermann@gmail.com>
date
Sun, 26 Feb 2012 19:51:14 +0100
changeset 26
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parent 25
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child 36
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permissions
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Minimal webdav support

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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 2011 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 "conf.h"
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30
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31 #include <string.h>
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32
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33 int cfg_parse_basic_file(ConfigParser *parser, FILE *in) {
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34 parser->lines = NULL;
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35 parser->mp = ucx_mempool_new(512);
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36
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37 // one logical line over many lines
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38 sstr_t mline;
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39 mline.ptr = NULL;
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40 mline.length = 0;
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41 ConfigLine *start_line;
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42 ConfigLine *end_line;
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43
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44 // read file
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45 sstr_t l;
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46 while((l = cfg_readln(in)).ptr != NULL) {
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47 void *org_ptr = l.ptr;
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48
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49 // put the line to the list
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50 ConfigLine *line = OBJ_NEW(parser->mp, ConfigLine);
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51 line->line = sstrdup_mp(parser->mp, l); // TODO: check for 0-len str
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52 line->object = NULL;
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53 line->type = LINE_OTHER;
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54 parser->lines = ucx_dlist_append(parser->lines, line);
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55
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56 // check if the line contains something
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57 l = cfg_trim_comment(l);
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58 line->type = cfg_get_basic_type(l);
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59
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60 if(line->type == LINE_OTHER) {
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61 // check for multi line
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62 if(mline.ptr != NULL) {
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63 // concate lines
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64 char *ptr = ucx_mempool_malloc(
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65 parser->mp,
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66 mline.length + l.length + 1);
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67
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68 memcpy(ptr, mline.ptr, mline.length);
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69 memcpy(ptr + mline.length - 1, l.ptr, l.length);
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70 mline.length += l.length;
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71 free(mline.ptr);
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72 mline.ptr = ptr;
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73 mline.ptr[mline.length] = 0;
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74
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75 end_line = line;
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76
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77 line->type = LINE_MULTI;
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78 }
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79 if(l.ptr[l.length - 1] == '\\') {
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80 if(mline.ptr == NULL) {
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81 mline = sstrdup_mp(parser->mp, l);
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82 start_line = line;
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83 }
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84 } else {
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85 // this line is complete so we can parse it
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86 sstr_t ll; // we parse this line
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87
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88 if(mline.ptr == NULL) {
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89 // single line
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90 ll = l;
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91 start_line = line;
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92 end_line = line;
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93 } else {
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94 ll = mline;
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95 }
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96
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97 // parse
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98 int r = parser->parse(parser, start_line, end_line, ll);
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99
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100 // clean up
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101 if(mline.ptr != NULL) {
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102 free(mline.ptr);
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103 mline.ptr = NULL;
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104 mline.length = 0;
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105 start_line = NULL;
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106 end_line = NULL;
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107 }
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108
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109 if(r != 0) {
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110 return -1;
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111 }
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112 }
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113 }
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114
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115 free(org_ptr);
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116 }
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117
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118 return 0;
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119 }
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120
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121 sstr_t cfg_readln(FILE *file) {
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122 sstr_t ns;
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123 ns.ptr = NULL;
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124 ns.length = 0;
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125
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126 if(!feof(file)) {
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127 char buf[512];
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128 buf[0] = 0;
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129 int len = 512;
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130
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131 if(fgets(buf, len, file) == NULL) {
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132 return ns;
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133 }
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134
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135 if(*buf == 0) {
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136 printf("???\n");
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137 return ns;
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138 }
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139
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140 char *ptr;
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141 if((ptr = strrchr(buf, '\n'))) {
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142 ptr[0] = 0;
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143 }
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144
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145 sstr_t line = sstr(buf);
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146 return sstrdub(line);
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147 }
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148
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149 sstr_t s;
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150 s.ptr = NULL;
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151 s.length = 0;
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152 return s;
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153 }
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154
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155
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156 /*
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157 * removes a comment from the line
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158 */
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159 sstr_t cfg_trim_comment(sstr_t line) {
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160 sstr_t nl = line;
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161 for(int i=0;i<line.length;i++) {
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162 if(line.ptr[i] == '#') {
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163 if(i > 0) {
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164 nl.ptr = line.ptr + i - 1;
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165 nl.length = i;
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166 break;
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167 } else {
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168 nl.ptr = line.ptr;
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169 nl.length = 0;
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170 break;
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171 }
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172 }
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173 }
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174 return sstrtrim(nl);
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175 }
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176
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177 /*
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178 * gets the first parameter in the params string and returns a new string
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179 * containing the other parameters or an empty string, if there are no more
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180 * parameters
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181 */
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182 sstr_t cfg_param(sstr_t params, sstr_t *name, sstr_t *value) {
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183 name->ptr = NULL;
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184 name->length = 0;
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185 value->ptr = NULL;
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186 value->length = 0;
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187
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188 // get name
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189 int i;
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190 for(i=0;i<params.length;i++) {
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191 char c = params.ptr[i];
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192 if(c == '=') {
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193 break;
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194 } else if(c < 33) {
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195 // no '=' means there is only a name, no value
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196 name->ptr = params.ptr;
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197 name->length = i;
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198
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199 params.ptr = params.ptr + i;
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200 params.length -= i;
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201 return sstrtrim(params);
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202 }
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203 }
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204
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205 name->ptr = params.ptr;
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206 name->length = i;
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207 i++;
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208
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209 // get value
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210 if(i>=params.length) {
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211 sstr_t ns;
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212 ns.ptr = NULL;
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213 ns.length = 0;
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214 return ns;
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215 }
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216
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217 int quote = 0;
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218 value->ptr = params.ptr + i;
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219 for(;i<params.length;i++) {
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220 char c = params.ptr[i];
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221 if(c == '"') {
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222 if(quote) {
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223 break; // end of quoted value
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224 } else {
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225 quote = 1;
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226 value->ptr++;
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227 }
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228 } else if(!quote && c < 33) {
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229 break; // end of value
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230 }
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231 }
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232 value->length = i - name->length - 2;
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233 i++;
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234
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235 if(value->length <= 0) {
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236 value->length = 0;
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237 value->ptr = NULL;
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238 }
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239
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240 // create new params string
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241 params.ptr += i;
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242 params.length -= i;
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243 return sstrtrim(params);
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244 }
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245
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246 /*
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247 * gets from a parameter list a value
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248 */
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249 sstr_t cfg_param_get(UcxList *list, sstr_t name) {
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250 while(list != NULL) {
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251 ConfigParam *param = list->data;
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252 if(!sstrcmp(param->name, name)) {
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253 return param->value;
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254 }
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255 list = list->next;
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256 }
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257 sstr_t ns;
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258 ns.ptr = NULL;
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259 ns.length = 0;
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260 return ns;
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261 }
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262
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263 /*
17
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264 * parses a line containing a directive and returns a ConfigDirective object
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265 * or NULL if an error occurs
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266 */
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267 ConfigDirective* cfg_parse_directive(sstr_t line, UcxMempool *mp) {
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268 if(line.length < 6) {
21
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269 printf("line too short\n");
17
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270 return NULL; // line too short
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271 }
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272
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273 sstr_t name;
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274
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diff changeset
275 int i;
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276 for(i=0;i<line.length;i++) {
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277 if(line.ptr[i] < 33) {
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278 break;
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279 }
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280 }
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281 name.ptr = line.ptr;
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282 name.length = i;
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283
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284 // create directive object
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285 ConfigDirective *directive = OBJ_NEW(mp, ConfigDirective);
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286 directive->directive_type = sstrdup_mp(mp, name);
17
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287 directive->type_num = cfg_get_directive_type_num(name);
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288 directive->condition = NULL; // set later by main parsing function
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289 directive->param = NULL;
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290
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291 sstr_t param_str;
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292 param_str.ptr = name.ptr + i;
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293 param_str.length = line.length - i;
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294 param_str = sstrtrim(param_str);
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295 sstr_t pname;
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296 sstr_t pvalue;
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297 for(;;) {
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298 param_str = cfg_param(param_str, &pname, &pvalue);
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299 if(pname.length <= 0) {
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300 break;
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301 }
20
7b235fa88008 Some fixes for mod_jk
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diff changeset
302
17
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303
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304 // create param object
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305 ConfigParam *param = OBJ_NEW(mp, ConfigParam);
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diff changeset
306 param->name = sstrdup_mp(mp, pname);
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diff changeset
307
17
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diff changeset
308 if(pvalue.length > 0) {
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diff changeset
309 param->value = sstrdup_mp(mp, pvalue);
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310 } else {
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311 param->value.ptr = NULL;
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312 param->value.length = 0;
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313 }
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314
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315 // add param to list
20
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316
17
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diff changeset
317 directive->param = ucx_list_append(directive->param, param);
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318 }
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319
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320 return directive;
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321 }
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322
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323 /*
16
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324 * gets the directive type number from a type string
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325 * valid types are:
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326 * AuthTrans 0
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327 * NameTrans 1
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328 * PathCheck 2
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329 * ObjectType 3
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330 * Service 4
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331 * AddLog 5
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332 * Init 6
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333 */
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334 int cfg_get_directive_type_num(sstr_t type) {
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335 /* get nsapi function type */
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336 int dt = -1;
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337 if(sstrcmp(type, sstr("AuthTrans")) == 0) {
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338 dt = 0;
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339 } else if(sstrcmp(type, sstr("NameTrans")) == 0) {
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340 dt = 1;
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341 } else if(sstrcmp(type, sstr("PathCheck")) == 0) {
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342 dt = 2;
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343 } else if(sstrcmp(type, sstr("ObjectType")) == 0) {
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344 dt = 3;
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345 } else if(sstrcmp(type, sstr("Service")) == 0) {
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346 dt = 4;
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347 } else if(sstrcmp(type, sstr("AddLog")) == 0) {
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348 dt = 5;
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349 } else if(sstrcmp(type, sstr("Init")) == 0) {
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350 dt = 6;
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351 }
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352 return dt;
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353 }
17
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354
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355 /*
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356 * checks if the line contains only a comment or space
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357 */
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358 int cfg_get_basic_type(sstr_t line) {
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359 if(line.length == 0) {
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360 return LINE_NOCONTENT;
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361 } else if(line.ptr[0] == '#') {
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362 return LINE_NOCONTENT;
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363 }
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364 return LINE_OTHER;
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365 }
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366
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367 /*
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368 * checks if the line contains a begin/end tag or a directive
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369 */
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370 int cfg_get_line_type(sstr_t line) {
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371 if(line.length < 3) {
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372 // this line is to short to be correct
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373 return LINE_ERROR;
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374 }
25
5dee29c7c530 Fixed config parser bug
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375
17
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376 if(line.ptr[0] == '<') {
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377 // start or end tag
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378 // TODO: check for space between '<' and '/'
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379 if(line.ptr[1] == '/') {
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380 return LINE_END_TAG;
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381 } else {
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382 return LINE_BEGIN_TAG;
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383 }
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384 } else {
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385 return LINE_DIRECTIVE;
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386 }
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diff changeset
387 }
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388
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389 int cfg_get_tag_type(sstr_t tag) {
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390 if(!sstrcmp(tag, sstr("Object"))) {
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391 return TAG_OBJECT;
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392 } else if(!sstrcmp(tag, sstr("If"))) {
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393 return TAG_IF;
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394 } else if(!sstrcmp(tag, sstr("ElseIf"))) {
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395 return TAG_ELSEIF;
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396 } else if(!sstrcmp(tag, sstr("Else"))) {
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397 return TAG_ELSE;
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398 } else if(!sstrcmp(tag, sstr("Client"))) {
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399 return TAG_CLIENT;
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diff changeset
400 }
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diff changeset
401 return -1;
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diff changeset
402 }
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diff changeset
403
d2a97bbeb57d Added init.conf parser
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diff changeset
404 /*
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parents: 16
diff changeset
405 * returns the name of the ending tag
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parents: 16
diff changeset
406 * on error, this functions returns a zero length string
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diff changeset
407 */
d2a97bbeb57d Added init.conf parser
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diff changeset
408 sstr_t cfg_get_end_tag_name(sstr_t line) {
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parents: 16
diff changeset
409 sstr_t ns;
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diff changeset
410 ns.ptr = NULL;
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diff changeset
411 ns.length = 0;
d2a97bbeb57d Added init.conf parser
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parents: 16
diff changeset
412
d2a97bbeb57d Added init.conf parser
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diff changeset
413 if(line.length < 4) {
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parents: 16
diff changeset
414 // minimum of 4 chars: </a>
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parents: 16
diff changeset
415 return ns;
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diff changeset
416 }
d2a97bbeb57d Added init.conf parser
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parents: 16
diff changeset
417
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diff changeset
418 sstr_t name;
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diff changeset
419 name.ptr = line.ptr + 2;
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diff changeset
420 name.length = line.length - 3;
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diff changeset
421
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parents: 16
diff changeset
422 // check for </ > frame
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diff changeset
423 if(line.ptr[0] != '<'
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parents: 16
diff changeset
424 || line.ptr[1] != '/'
d2a97bbeb57d Added init.conf parser
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parents: 16
diff changeset
425 || line.ptr[line.length - 1] != '>')
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parents: 16
diff changeset
426 {
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parents: 16
diff changeset
427 return ns;
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parents: 16
diff changeset
428 }
d2a97bbeb57d Added init.conf parser
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parents: 16
diff changeset
429
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parents: 16
diff changeset
430 return sstrtrim(name);
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parents: 16
diff changeset
431 }
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parents: 16
diff changeset
432
d2a97bbeb57d Added init.conf parser
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parents: 16
diff changeset
433 ConfigTag* cfg_parse_begin_tag(sstr_t line, UcxMempool *mp) {
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diff changeset
434 if(line.length < 4) {
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parents: 16
diff changeset
435 return NULL; // this line can't contain a valid tag
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parents: 16
diff changeset
436 }
d2a97bbeb57d Added init.conf parser
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parents: 16
diff changeset
437
d2a97bbeb57d Added init.conf parser
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 16
diff changeset
438 if(line.ptr[0] != '<' || line.ptr[line.length - 1] != '>') {
d2a97bbeb57d Added init.conf parser
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parents: 16
diff changeset
439 return NULL; // syntax error
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parents: 16
diff changeset
440 }
d2a97bbeb57d Added init.conf parser
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parents: 16
diff changeset
441
d2a97bbeb57d Added init.conf parser
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parents: 16
diff changeset
442 sstr_t name;
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parents: 16
diff changeset
443 name.ptr = line.ptr + 1;
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parents: 16
diff changeset
444 int i;
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parents: 16
diff changeset
445 for(i=1;i<line.length - 1;i++) {
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parents: 16
diff changeset
446 if(line.ptr[i] < 33) { // char is space
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diff changeset
447 break;
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parents: 16
diff changeset
448 }
d2a97bbeb57d Added init.conf parser
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parents: 16
diff changeset
449 }
18
73aacbf6e492 Added server.conf parser
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parents: 17
diff changeset
450 name.length = i - 1;
17
d2a97bbeb57d Added init.conf parser
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parents: 16
diff changeset
451 if(name.length < 1) {
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parents: 16
diff changeset
452 return NULL; // syntax error
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parents: 16
diff changeset
453 }
d2a97bbeb57d Added init.conf parser
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parents: 16
diff changeset
454
d2a97bbeb57d Added init.conf parser
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parents: 16
diff changeset
455 // create tag object
d2a97bbeb57d Added init.conf parser
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 16
diff changeset
456 ConfigTag *tag = OBJ_NEW(mp, ConfigTag);
25
5dee29c7c530 Fixed config parser bug
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parents: 23
diff changeset
457 tag->name = sstrdup_mp(mp, name);
17
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parents: 16
diff changeset
458 tag->param = NULL;
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parents: 16
diff changeset
459
d2a97bbeb57d Added init.conf parser
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parents: 16
diff changeset
460 // parse parameters
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diff changeset
461 sstr_t param_str;
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parents: 16
diff changeset
462 param_str.ptr = line.ptr + i;
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parents: 16
diff changeset
463 param_str.length = line.length - name.length - 2;
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diff changeset
464 param_str = sstrtrim(param_str);
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parents: 16
diff changeset
465 if(param_str.length <= 0) {
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parents: 16
diff changeset
466 return tag; // no parameters
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parents: 16
diff changeset
467 }
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parents: 16
diff changeset
468
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469 sstr_t pname;
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470 sstr_t pvalue;
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471 for(;;) {
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472 param_str = cfg_param(param_str, &pname, &pvalue);
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473 if(pname.length <= 0) {
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474 break;
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475 }
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476
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477 // create param object
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478 ConfigParam *param = OBJ_NEW(mp, ConfigParam);
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479 param->name = sstrdup_mp(mp, pname);
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480 if(pvalue.length > 0) {
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481 param->value = sstrdup_mp(mp, pvalue);
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482 } else {
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483 param->value.ptr = NULL;
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484 param->value.length = 0;
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485 }
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486
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487 // add param to list
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488 tag->param = ucx_list_append(tag->param, param);
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489 }
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490
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491 return tag;
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492 }
21
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493
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494
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495 /* directive functions */
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496
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497 /*
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498 * gets a ConfigDirective with a specific name from a List of directives
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499 * returns a directive or NULL, if the directive cannot be found
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500 */
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501 ConfigDirective* cfg_directivelist_get(UcxDlist *dirs, sstr_t name) {
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502 while(dirs != NULL) {
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503 ConfigDirective *d = dirs->data;
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504 if(d != NULL) {
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505 if(!sstrcmp(d->directive_type, name)) {
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506 return d;
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507 }
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508 }
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509 dirs = dirs->next;
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510 }
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diff changeset
511 return NULL;
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512 }
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513
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diff changeset
514 sstr_t cfg_directivelist_get_str(UcxDlist *dirs, sstr_t name) {
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515 ConfigDirective *d = cfg_directivelist_get(dirs, name);
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516 if(d == NULL) {
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517 sstr_t n;
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518 n.ptr = NULL;
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519 n.length = 0;
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520 return n;
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521 }
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522 return cfg_directive_pstr1(d);
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523 }
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diff changeset
524
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525 /*
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526 * returns the name of the first parameter of the directive
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527 * useful for 'name value' directives
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528 */
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529 sstr_t cfg_directive_pstr1(ConfigDirective *dir) {
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530 if(dir->param == NULL) {
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diff changeset
531 fprintf(stderr, "%s", "Error: cfg_directive_pstr1: param is NULL\n");
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diff changeset
532 sstr_t n;
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533 n.ptr = NULL;
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534 n.length = 0;
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535 return n;
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536 }
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diff changeset
537
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538 ConfigParam *p = dir->param->data;
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539 return p->name;
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540 }
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diff changeset
541
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parents: 20
diff changeset
542

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