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annotate extensions/app_radgw/rgw_conf.l @ 254:a857024cb48b

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Ported the RADIUS/Diameter translation code from waaad project. Not tested yet. Gateway plugins to come later.
author Sebastien Decugis <sdecugis@nict.go.jp>
date Wed, 14 Apr 2010 18:30:22 +0900
parents
children 5df55136361b
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254
a857024cb48b Ported the RADIUS/Diameter translation code from waaad project. Not tested yet. Gateway plugins to come later.
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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 * *
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5 * Copyright (c) 2009, 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 /* Lex configuration parser for radius_gw extension.
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36 *
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37 */
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38
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39 %{
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40 #include "rgw.h"
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41 #include "rgw_conf.tab.h"
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42
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43 /* Update the column information */
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44 #define YY_USER_ACTION { \
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45 yylloc->first_column = yylloc->last_column + 1; \
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46 yylloc->last_column = yylloc->first_column + yyleng - 1; \
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47 }
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48
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49 /* %option noinput ? */
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50 #define YY_NO_INPUT
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51 %}
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52
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53 %option bison-bridge bison-locations
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54 %option noyywrap
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55 %option nounput
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56
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57 /* Use the following start condition to parse an URI */
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58 %x IN_PLG
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59 %x IN_CLI1
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60 %x IN_CLI2
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61 %x EXPECT_IP4
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62 %x EXPECT_IP6
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63 %x EXPECT_DECINT
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64
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65 /* Quoted string. Multilines do not match. */
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66 qstring \"[^\"\n]*\"
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67
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68 /* Used to match IP, IP6, and port */
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69 IP4 [0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}
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70 IP6 [[:xdigit:]]*:[[:xdigit:]]*:[[:xdigit:].:]*
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71 BR_PORT [[][0-9]+[]]
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72
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73
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74 %%
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75
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76 /* All sections */
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77 <*>\n {
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78 /* Update the line count */
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79 yylloc->first_line++;
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80 yylloc->last_line++;
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81 yylloc->last_column=0;
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82 }
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83
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84 <*>([[:space:]]{-}[\n])+ ; /* Eat all spaces, not new lines */
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85 <*>#.*$ ; /* Eat all comments */
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86
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87 <*>{qstring} {
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88 /* First copy the string without the quotes for use in the yacc parser */
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89 yylval->string = strdup(yytext+1);
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90 if (yylval->string == NULL) {
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91 fd_log_debug("Unable to allocate memory: %s\n", strerror(errno));
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92 return LEX_ERROR; /* trig an error in yacc parser */
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93 }
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94
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95 yylval->string[yyleng-2] = '\0';
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96
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97 /* the yacc parser will check the string is valid */
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98 return QSTRING;
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99 }
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100
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102 /* Extension section */
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103 (?i:"RGWX") { BEGIN(IN_PLG); return PLG_PREFIX; }
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104
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105 <IN_PLG>(?i:"auth") { return AUTH; }
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106 <IN_PLG>(?i:"acct") { return ACCT; }
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107
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108 <IN_PLG,IN_CLI2>[[:xdigit:]]+ {
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109 /* Convert this to an integer value */
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110 int ret = sscanf(yytext, "%x", &yylval->integer);
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diff changeset
111 if (ret != 1) {
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112 /* No matching: an error occurred */
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113 fd_log_debug("Unable to convert the value '%s' to a valid number: %s\n", yytext, strerror(errno));
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114 return LEX_ERROR; /* trig an error in yacc parser */
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115 /* Maybe we could REJECT instead of failing here? */
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116 }
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117 return INTEGER;
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118 }
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119
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120 <IN_PLG>[:] { return yytext[0]; }
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121
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122
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123 /* Client section */
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124 (?i:"cli") { BEGIN(IN_CLI1); return CLI_PREFIX; }
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125
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126 /* Match an IP (4 or 6) and optional port */
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127 <IN_CLI1>({IP4}|{IP6}){BR_PORT}? {
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128 char * work;
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129 char * port;
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130 unsigned short p = 0;
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131
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132 work = strdup(yytext);
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133 if ( work == NULL ) {
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134 fd_log_debug("Unable to allocate memory: %s\n", strerror(errno));
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135 return LEX_ERROR; /* trig an error in yacc parser */
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136 }
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137
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138 if (port = strchr(work, '[')) {
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139 *port = '\0';
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140 port++;
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141 if (sscanf(port, "%hu]", &p) != 1) {
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142 fd_log_debug("'%s' is not a valid port: %s\n", port, strerror(errno));
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143 free(work);
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144 return LEX_ERROR; /* trig an error in yacc parser */
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145 }
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146 }
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147
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148 /* Do we have an IP or IPv6? Let's check if we have ':' char somewhere in the beginning */
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149 if (memchr(work, ':', 5) != NULL) {
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150 struct sockaddr_in6 * sin6 = NULL;
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151
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152 sin6 = malloc(sizeof(struct sockaddr_in6));
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153 if (sin6 == NULL) {
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154 fd_log_debug("Unable to allocate memory: %s\n", strerror(errno));
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155 free(work);
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156 return LEX_ERROR; /* trig an error in yacc parser */
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157 }
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158
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159 memset(sin6, 0, sizeof(struct sockaddr_in6));
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160 sin6->sin6_family = AF_INET6;
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161 if (inet_pton(AF_INET6, work, &sin6->sin6_addr) != 1) {
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162 fd_log_debug("'%s' is not a valid IPv6 address: %s\n", work, strerror(errno));
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163 free(work);
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164 free(sin6);
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165 return LEX_ERROR; /* trig an error in yacc parser */
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166 }
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167 sin6->sin6_port = htons(p);
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168 yylval->ss = (struct sockaddr *)sin6;
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diff changeset
169 } else {
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170 struct sockaddr_in * sin = NULL;
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171
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172 sin = malloc(sizeof(struct sockaddr_in));
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173 if (sin == NULL) {
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174 fd_log_debug("Unable to allocate memory: %s\n", strerror(errno));
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175 free(work);
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176 return LEX_ERROR; /* trig an error in yacc parser */
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177 }
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178
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179 memset(sin, 0, sizeof(struct sockaddr_in));
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180 sin->sin_family = AF_INET;
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181 if (inet_pton(AF_INET, work, &sin->sin_addr) != 1) {
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182 fd_log_debug("'%s' is not a valid IP address: %s\n", work, strerror(errno));
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diff changeset
183 free(work);
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184 free(sin);
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185 return LEX_ERROR; /* trig an error in yacc parser */
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186 }
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187
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188 sin->sin_port = htons(p);
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189 yylval->ss = (struct sockaddr *)sin;
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190 }
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191 free(work);
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192 return IP;
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193 }
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194
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195
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196 <IN_CLI1>"/" { BEGIN(IN_CLI2); return '/'; }
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197
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198
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199 /* Servers section */
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200 (?i:"auth_server_enable") { return AUTH_ENABLE; }
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201 (?i:"auth_server_port") { BEGIN(EXPECT_DECINT); return AUTH_PORT; }
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202 (?i:"auth_server_ip4") { BEGIN(EXPECT_IP4); return AUTH_IP4; }
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203 (?i:"auth_server_ip6") { BEGIN(EXPECT_IP6); return AUTH_IP6; }
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204 (?i:"acct_server_enable") { return ACCT_ENABLE; }
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205 (?i:"acct_server_port") { BEGIN(EXPECT_DECINT); return ACCT_PORT; }
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206 (?i:"acct_server_ip4") { BEGIN(EXPECT_IP4); return ACCT_IP4; }
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207 (?i:"acct_server_ip6") { BEGIN(EXPECT_IP6); return ACCT_IP6; }
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208
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209 <EXPECT_DECINT>[[:digit:]]+ {
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210 /* Match an integer (not hexa) */
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211 int ret = sscanf(yytext, "%d", &yylval->integer);
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212 if (ret != 1) {
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213 /* No matching: an error occurred */
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214 fd_log_debug("Unable to convert the value '%s' to a valid number: %s\n", yytext, strerror(errno));
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215 return LEX_ERROR; /* trig an error in yacc parser */
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216 /* Maybe we could REJECT instead of failing here? */
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217 }
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218 return INTEGER;
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219 }
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220
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221 <EXPECT_IP4,EXPECT_IP6>(?i:"disable") { return DISABLED; }
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222
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223 <EXPECT_IP4>{IP4} {
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224 struct sockaddr_in * sin = NULL;
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225
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226 sin = malloc(sizeof(struct sockaddr_in));
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227 if (sin == NULL) {
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228 fd_log_debug("Unable to allocate memory: %s\n", strerror(errno));
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229 return LEX_ERROR; /* trig an error in yacc parser */
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230 }
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231
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232 memset(sin, 0, sizeof(struct sockaddr_in));
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233 sin->sin_family = AF_INET;
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234 if (inet_pton(AF_INET, yytext, &sin->sin_addr) != 1) {
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235 fd_log_debug("'%s' is not a valid IP address: %s\n", yytext, strerror(errno));
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236 free(sin);
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237 return LEX_ERROR; /* trig an error in yacc parser */
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238 }
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239 yylval->ss = (struct sockaddr *)sin;
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240 return IP;
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241 }
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242
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243 <EXPECT_IP6>{IP6} {
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244 struct sockaddr_in6 * sin6 = NULL;
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245
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246 sin6 = malloc(sizeof(struct sockaddr_in6));
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247 if (sin6 == NULL) {
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248 fd_log_debug("Unable to allocate memory: %s\n", strerror(errno));
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249 return LEX_ERROR; /* trig an error in yacc parser */
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250 }
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251
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252 memset(sin6, 0, sizeof(struct sockaddr_in6));
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253 sin6->sin6_family = AF_INET6;
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254 if (inet_pton(AF_INET6, yytext, &sin6->sin6_addr) != 1) {
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255 fd_log_debug("'%s' is not a valid IPv6 address: %s\n", yytext, strerror(errno));
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256 free(sin6);
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257 return LEX_ERROR; /* trig an error in yacc parser */
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258 }
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259 yylval->ss = (struct sockaddr *)sin6;
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260 return IP;
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261 }
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262
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263
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264 /* Valid single characters for yyparse in all contexts */
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265 <*>[=] { return yytext[0]; }
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266 <*>[;] { BEGIN(INITIAL); return yytext[0]; }
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267
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268 /* Unrecognized token */
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269 <*>[[:alnum:]]+ | /* This rule is only useful to print a complete token in error messages */
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270 /* Unrecognized character */
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diff changeset
271 <*>. {
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272 fd_log_debug("Unrecognized text on line %d col %d: '%s'.\n", yylloc->first_line, yylloc->first_column, yytext);
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diff changeset
273 return LEX_ERROR;
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274 }
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275
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276 %%
"Welcome to our mercurial repository"