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annotate extensions/app_radgw/rgwx_echodrop.y @ 511:17435072de36

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Search extensions conf files in the main configuration folder also
author Sebastien Decugis <sdecugis@nict.go.jp>
date Fri, 20 Aug 2010 15:18:58 +0900
parents 26aafbbc1640
children 4a9f08d6b6ba
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1 /*********************************************************************************************************
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2 * Software License Agreement (BSD License) *
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3 * Author: Sebastien Decugis <sdecugis@nict.go.jp> *
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4 * *
270
47fff7a7af06 Updated copyright information
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5 * Copyright (c) 2010, WIDE Project and NICT *
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6 * All rights reserved. *
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7 * *
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8 * Redistribution and use of this software in source and binary forms, with or without modification, are *
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9 * permitted provided that the following conditions are met: *
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10 * *
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11 * * Redistributions of source code must retain the above *
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12 * copyright notice, this list of conditions and the *
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13 * following disclaimer. *
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14 * *
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15 * * Redistributions in binary form must reproduce the above *
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16 * copyright notice, this list of conditions and the *
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17 * following disclaimer in the documentation and/or other *
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18 * materials provided with the distribution. *
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19 * *
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20 * * Neither the name of the WIDE Project or NICT nor the *
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21 * names of its contributors may be used to endorse or *
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22 * promote products derived from this software without *
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23 * specific prior written permission of WIDE Project and *
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24 * NICT. *
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25 * *
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26 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED *
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27 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A *
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28 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR *
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29 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT *
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30 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS *
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31 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR *
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32 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF *
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33 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. *
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34 *********************************************************************************************************/
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35
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36 /* Yacc parser for echo/drop plugin.
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37 See doc/echodrop.rgwx.conf.sample for description of the parsed format. */
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38
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39
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40 /* For development only : */
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41 %debug
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42 %error-verbose
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43
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44 /* The parser receives the configuration file filename and the conf structure as parameter */
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45 %parse-param {char * conffile}
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46 %parse-param {struct rgwp_config *cs}
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47
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48 /* Keep track of location */
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49 %locations
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50 %pure-parser
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51
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52 %{
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53 #include "rgwx_echodrop.h"
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54 #include "rgwx_echodrop.tab.h" /* bison is not smart enough to define the YYLTYPE before including this code, so... */
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55
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56
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57 /* Forward declaration */
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58 int yyparse(char * conffile, struct rgwp_config *cs);
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59
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60 /* The Lex parser prototype */
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61 int rgwx_echodroplex(YYSTYPE *lvalp, YYLTYPE *llocp);
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62
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63
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64 /* Parse the configuration file */
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65 int ed_conffile_parse(char * conffile, struct rgwp_config *cs)
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66 {
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67 extern FILE * rgwx_echodropin;
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68 int ret;
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69
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70 rgwx_echodropin = fopen(conffile, "r");
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71 if ((rgwx_echodropin == NULL) && (*conffile != '/')) { /* We received a relative path, try adding DEFAULT_CONF_PATH prefix */
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72 char * fullpath;
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73 CHECK_MALLOC( fullpath = malloc( strlen(conffile) + strlen(DEFAULT_CONF_PATH) + 2 ) );
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74 sprintf( fullpath, DEFAULT_CONF_PATH "/%s", conffile );
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75 rgwx_echodropin = fopen(fullpath, "r");
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76 free(fullpath);
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77 }
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78 if (rgwx_echodropin == NULL) {
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79 ret = errno;
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80 fd_log_debug("[echodrop.rgwx] Unable to open plugin configuration file %s for reading: %s\n", conffile, strerror(ret));
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81 return ret;
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82 }
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83
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84 ret = rgwx_echodropparse(conffile, cs);
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85
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86 fclose(rgwx_echodropin);
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87
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88 if (ret != 0) {
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89 return EINVAL;
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90 }
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91
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92 return 0;
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93 }
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94
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95 /* Function to report the errors */
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96 void yyerror (YYLTYPE *ploc, char * conffile, struct rgwp_config *cs, char const *s)
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97 {
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98 if (ploc->first_line != ploc->last_line)
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99 fd_log_debug("%s:%d.%d-%d.%d : %s\n", conffile, ploc->first_line, ploc->first_column, ploc->last_line, ploc->last_column, s);
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100 else if (ploc->first_column != ploc->last_column)
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101 fd_log_debug("%s:%d.%d-%d : %s\n", conffile, ploc->first_line, ploc->first_column, ploc->last_column, s);
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102 else
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103 fd_log_debug("%s:%d.%d : %s\n", conffile, ploc->first_line, ploc->first_column, s);
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104 }
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105
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106 static struct {
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107 struct {
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108 unsigned vendor :1;
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109 unsigned tlv :1;
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110 unsigned ext :1;
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111 };
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112 uint8_t type;
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113 uint16_t extype;
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114 uint32_t vendor_id;
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115 } attrinfo;
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116
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117
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118 %}
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119
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120 /* Values returned by lex for tokens */
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121 %union {
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122 unsigned integer; /* Value */
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123 }
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124
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125 /* typed data */
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126 %token <integer> INTEGER
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127 %type <integer> action
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128
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129 /* simple tokens */
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130 %token TOK_ECHO
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131 %token TOK_DROP
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132 %token TOK_CODE
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133 %token TOK_VENDOR
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134 %token TOK_TLV
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135 %token TOK_EXT
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136
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137 /* In case of error in the lexical analysis */
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138 %token LEX_ERROR
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139
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140
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141 /* -------------------------------------- */
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142 %%
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143
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144 /* The grammar definition */
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145 conffile: /* empty grammar is OK */
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146 | conffile attrdef
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147 ;
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148
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149 /* An attribute line */
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150 attrdef: {
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151 memset(&attrinfo, 0, sizeof(attrinfo));
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152 }
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153 action TOK_CODE INTEGER vendordef ';'
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154 {
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155 struct ed_conf_attribute * new;
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156 struct fd_list * li;
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157
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158 if ($4 >= 256) {
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159 yyerror (&yylloc, conffile, cs, "Too big value for attribute CODE");
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160 YYERROR;
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161 }
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162
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163 /* Create a new list item */
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164 CHECK_MALLOC_DO( new = malloc(sizeof(struct ed_conf_attribute)),
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165 {
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166 yyerror (&yylloc, conffile, cs, "Memory allocation error");
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167 YYERROR;
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168 } );
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169 memset(new, 0, sizeof(struct ed_conf_attribute));
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170
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171 fd_list_init(&new->chain, NULL);
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172
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173 new->action = $2;
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174 new->vsa = attrinfo.vendor;
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175 new->tlv = attrinfo.tlv;
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176 new->ext = attrinfo.ext;
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177
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178 if (new->vsa)
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179 new->vendor_id = attrinfo.vendor_id;
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180 if (new->tlv)
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181 new->type = attrinfo.type;
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182 if (new->ext)
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183 new->extype = attrinfo.extype;
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184
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185 new->code = $4;
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186
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187 /* Now place this attribute in the list */
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188 for (li = cs->attributes.next; li != &cs->attributes; li = li->next) {
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189 struct ed_conf_attribute *eca = (struct ed_conf_attribute *)li;
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190 /* Order first by attribute code */
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191 if (eca->code > new->code)
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192 break;
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193 if (eca->code < new->code)
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194 continue;
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195
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196 /* Then by VSA flag */
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197 if (! new->vsa)
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198 break;
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diff changeset
199 if (! eca->vsa)
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diff changeset
200 continue;
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201
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diff changeset
202 /* Then by vendor value */
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diff changeset
203 if (eca->vendor_id >= new->vendor_id)
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204 break;
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diff changeset
205 }
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diff changeset
206
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diff changeset
207 fd_list_insert_before(li, &new->chain);
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208 }
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209 ;
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210
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diff changeset
211 /* What to do with the specified attribute */
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diff changeset
212 action: TOK_ECHO
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diff changeset
213 {
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diff changeset
214 $$ = ACT_ECHO;
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215 }
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216 |
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217 TOK_DROP
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diff changeset
218 {
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diff changeset
219 $$ = ACT_DROP;
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220 }
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diff changeset
221 ;
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diff changeset
222
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diff changeset
223 /* Vendor specifics, if any */
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diff changeset
224 vendordef: /* empty OK */
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225 | TOK_VENDOR INTEGER specif
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diff changeset
226 {
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diff changeset
227 attrinfo.vendor_id = $2;
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228 attrinfo.vendor = 1;
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diff changeset
229 }
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diff changeset
230 ;
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diff changeset
231
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diff changeset
232 /* Any additional specification ? */
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233 specif: /* empty OK */
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234 | TOK_TLV INTEGER
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diff changeset
235 {
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diff changeset
236 if ($2 >= (1 << 8)) {
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diff changeset
237 yyerror (&yylloc, conffile, cs, "Too big value for TLV type");
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diff changeset
238 YYERROR;
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diff changeset
239 }
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diff changeset
240 attrinfo.type = $2;
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diff changeset
241 attrinfo.tlv = 1;
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diff changeset
242 }
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diff changeset
243 | TOK_EXT INTEGER
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
diff changeset
244 {
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245 if ($2 >= (1 << 16)) {
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parents:
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246 yyerror (&yylloc, conffile, cs, "Too big value for Ext-Type");
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247 YYERROR;
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248 }
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249 attrinfo.extype = $2;
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parents:
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250 attrinfo.ext = 1;
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parents:
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251 yyerror (&yylloc, conffile, cs, "The EXT option is not supported in this version.");
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Sebastien Decugis <sdecugis@nict.go.jp>
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252 YYERROR;
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
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253 }
c78f623c702d Ported the Echo/Drop plugin from waaad (missing files)
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
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254 ;
c78f623c702d Ported the Echo/Drop plugin from waaad (missing files)
Sebastien Decugis <sdecugis@nict.go.jp>
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255
"Welcome to our mercurial repository"