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annotate packages/net/snmp/lib/current/src/snmp.c @ 103:95f3e12a6327 ecos-sw-2000-06-23

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Merge from eCos master repository on 2000-06-23-16:41:10-BST
author jlarmour
date Fri, 23 Jun 2000 17:06:31 +0000
parents
children e0c0827131d1
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1 //==========================================================================
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2 //
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3 // ./lib/current/src/snmp.c
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4 //
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5 //
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6 //==========================================================================
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7 //####COPYRIGHTBEGIN####
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8 //
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9 // -------------------------------------------
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10 // The contents of this file are subject to the Red Hat eCos Public License
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11 // Version 1.1 (the "License"); you may not use this file except in
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12 // compliance with the License. You may obtain a copy of the License at
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13 // http://www.redhat.com/
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14 //
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15 // Software distributed under the License is distributed on an "AS IS"
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16 // basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
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17 // License for the specific language governing rights and limitations under
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18 // the License.
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19 //
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20 // The Original Code is eCos - Embedded Configurable Operating System,
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21 // released September 30, 1998.
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22 //
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23 // The Initial Developer of the Original Code is Red Hat.
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24 // Portions created by Red Hat are
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25 // Copyright (C) 1998, 1999, 2000 Red Hat, Inc.
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26 // All Rights Reserved.
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27 // -------------------------------------------
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28 //
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29 //####COPYRIGHTEND####
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30 //####UCDSNMPCOPYRIGHTBEGIN####
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31 //
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32 // -------------------------------------------
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33 //
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34 // Portions of this software may have been derived from the UCD-SNMP
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35 // project, <http://ucd-snmp.ucdavis.edu/> from the University of
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36 // California at Davis, which was originally based on the Carnegie Mellon
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37 // University SNMP implementation. Portions of this software are therefore
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38 // covered by the appropriate copyright disclaimers included herein.
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39 //
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40 // The release used was version 4.1.2 of May 2000. "ucd-snmp-4.1.2"
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41 // -------------------------------------------
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42 //
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43 //####UCDSNMPCOPYRIGHTEND####
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44 //==========================================================================
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45 //#####DESCRIPTIONBEGIN####
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46 //
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47 // Author(s): hmt
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48 // Contributors: hmt
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49 // Date: 2000-05-30
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50 // Purpose: Port of UCD-SNMP distribution to eCos.
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51 // Description:
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52 //
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53 //
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54 //####DESCRIPTIONEND####
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55 //
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56 //==========================================================================
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57 /********************************************************************
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58 Copyright 1989, 1991, 1992 by Carnegie Mellon University
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59
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60 Derivative Work -
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61 Copyright 1996, 1998, 1999, 2000 The Regents of the University of California
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62
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63 All Rights Reserved
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64
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65 Permission to use, copy, modify and distribute this software and its
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66 documentation for any purpose and without fee is hereby granted,
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67 provided that the above copyright notice appears in all copies and
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68 that both that copyright notice and this permission notice appear in
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69 supporting documentation, and that the name of CMU and The Regents of
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70 the University of California not be used in advertising or publicity
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71 pertaining to distribution of the software without specific written
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72 permission.
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73
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74 CMU AND THE REGENTS OF THE UNIVERSITY OF CALIFORNIA DISCLAIM ALL
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75 WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED
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76 WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL CMU OR
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77 THE REGENTS OF THE UNIVERSITY OF CALIFORNIA BE LIABLE FOR ANY SPECIAL,
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78 INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
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79 FROM THE LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
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80 CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
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81 CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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82 *********************************************************************/
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83 /*
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84 * Simple Network Management Protocol (RFC 1067).
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85 *
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86 */
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87 /**********************************************************************
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88 Copyright 1988, 1989, 1991, 1992 by Carnegie Mellon University
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89
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90 All Rights Reserved
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91
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92 Permission to use, copy, modify, and distribute this software and its
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93 documentation for any purpose and without fee is hereby granted,
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94 provided that the above copyright notice appear in all copies and that
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95 both that copyright notice and this permission notice appear in
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96 supporting documentation, and that the name of CMU not be
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97 used in advertising or publicity pertaining to distribution of the
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98 software without specific, written prior permission.
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99
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100 CMU DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
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101 ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
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102 CMU BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
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103 ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
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104 WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
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105 ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
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106 SOFTWARE.
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107 ******************************************************************/
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108
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109 #include <config.h>
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110 #include <ctype.h>
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111
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112 #ifdef KINETICS
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113 #include "gw.h"
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114 #include "ab.h"
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115 #include "inet.h"
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116 #include "fp4/cmdmacro.h"
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117 #include "fp4/pbuf.h"
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118 #include "glob.h"
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119 #endif
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120
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121 #include <stdio.h>
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122 #include <stdlib.h>
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123
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124 #include <sys/types.h>
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125 #ifdef HAVE_STRING_H
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126 #include <string.h>
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127 #else
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128 #include <strings.h>
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129 #endif
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130 #if HAVE_NETINET_IN_H
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131 #include <netinet/in.h>
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132 #endif
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133 #ifdef HAVE_SYS_SELECT_H
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134 #include <sys/select.h>
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135 #endif
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136 #if HAVE_WINSOCK_H
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137 #include <winsock.h>
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138 #endif
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139 #ifndef NULL
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140 #define NULL 0
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141 #endif
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142
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143 #if HAVE_DMALLOC_H
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144 #include <dmalloc.h>
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145 #endif
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146
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147 #ifdef vms
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148 #include <in.h>
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149 #endif
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150
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151 #include "asn1.h"
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152 #include "snmp.h"
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153 #include "snmp_api.h"
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154 #include "snmp_impl.h"
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155 #include "snmp_logging.h"
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156 #include "mib.h"
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157
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158 void
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159 xdump(const u_char *cp,
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160 size_t length,
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161 const char *prefix)
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162 {
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163 int col, count;
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164 char *buffer;
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165
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166 buffer=(char *)malloc(strlen(prefix)+80);
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167 if (!buffer) {
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168 snmp_log(LOG_NOTICE, "xdump: malloc failed. packet-dump skipped\n");
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169 return;
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170 }
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171
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172 count = 0;
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173 while(count < (int)length){
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174 strcpy(buffer, prefix);
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175 sprintf (buffer+strlen(buffer), "%.4d: ", count);
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176
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177 for(col = 0; ((count + col) < (int)length) && col < 16; col++){
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178 sprintf(buffer+strlen(buffer), "%02X ", cp[count + col]);
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179 if (col % 4 == 3) strcat(buffer, " ");
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180 }
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181 for(;col < 16;col++){ /* pad end of buffer with zeros */
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182 strcat(buffer, " ");
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183 if (col % 4 == 3) strcat(buffer, " ");
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184 }
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185 strcat(buffer, " ");
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186 for(col = 0; ((count + col) < (int)length) && col < 16; col++){
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187 buffer[col+60]=isprint(cp[count+col])?cp[count+col]:'.';
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188 }
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189 buffer[col+60]='\n';
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190 buffer[col+60+1]=0;
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191 snmp_log(LOG_DEBUG, "%s", buffer);
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192 count += col;
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193 }
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194 snmp_log(LOG_DEBUG, "\n");
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195 free(buffer);
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196
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197 } /* end xdump() */
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198
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199 /*
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200 u_char * snmp_parse_var_op(
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201 u_char *data IN - pointer to the start of object
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202 oid *var_name OUT - object id of variable
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203 int *var_name_len IN/OUT - length of variable name
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204 u_char *var_val_type OUT - type of variable (int or octet string) (one byte)
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205 int *var_val_len OUT - length of variable
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206 u_char **var_val OUT - pointer to ASN1 encoded value of variable
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207 int *listlength IN/OUT - number of valid bytes left in var_op_list
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208 */
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209
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210 u_char *
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211 snmp_parse_var_op(u_char *data,
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212 oid *var_name,
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213 size_t *var_name_len,
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214 u_char *var_val_type,
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215 size_t *var_val_len,
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216 u_char **var_val,
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217 size_t *listlength)
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218 {
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219 u_char var_op_type;
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220 size_t var_op_len = *listlength;
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221 u_char *var_op_start = data;
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222
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223 data = asn_parse_sequence(data, &var_op_len, &var_op_type,
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224 (ASN_SEQUENCE | ASN_CONSTRUCTOR), "var_op");
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225 if (data == NULL){
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226 /* msg detail is set */
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227 return NULL;
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228 }
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229 data = asn_parse_objid(data, &var_op_len, &var_op_type, var_name, var_name_len);
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230 if (data == NULL){
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231 ERROR_MSG("No OID for variable");
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232 return NULL;
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233 }
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234 if (var_op_type != (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_OBJECT_ID))
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235 return NULL;
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236 *var_val = data; /* save pointer to this object */
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237 /* find out what type of object this is */
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238 data = asn_parse_header(data, &var_op_len, var_val_type);
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239 if (data == NULL){
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240 ERROR_MSG("No header for value");
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241 return NULL;
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242 }
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243 /* XXX no check for type! */
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244 *var_val_len = var_op_len;
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245 data += var_op_len;
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246 *listlength -= (int)(data - var_op_start);
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247 return data;
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248 }
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249
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250 /*
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251 u_char * snmp_build_var_op(
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252 u_char *data IN - pointer to the beginning of the output buffer
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253 oid *var_name IN - object id of variable
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254 int *var_name_len IN - length of object id
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255 u_char var_val_type IN - type of variable
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256 int var_val_len IN - length of variable
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257 u_char *var_val IN - value of variable
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258 int *listlength IN/OUT - number of valid bytes left in
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259 output buffer
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260 */
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261
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262 u_char *
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263 snmp_build_var_op(u_char *data,
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264 oid *var_name,
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265 size_t *var_name_len,
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266 u_char var_val_type,
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267 size_t var_val_len,
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268 u_char *var_val,
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269 size_t *listlength)
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270 {
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271 size_t dummyLen, headerLen;
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272 u_char *dataPtr;
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273
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274 dummyLen = *listlength;
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275 dataPtr = data;
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276 #if 0
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277 data = asn_build_sequence(data, &dummyLen,
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278 (u_char)(ASN_SEQUENCE | ASN_CONSTRUCTOR), 0);
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279 if (data == NULL){
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280 return NULL;
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281 }
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282 #endif
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283 if (dummyLen < 4)
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284 return NULL;
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jlarmour
parents:
diff changeset
285 data += 4;
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parents:
diff changeset
286 dummyLen -=4;
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parents:
diff changeset
287
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parents:
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288 headerLen = data - dataPtr;
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parents:
diff changeset
289 *listlength -= headerLen;
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parents:
diff changeset
290 data = asn_build_objid(data, listlength,
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parents:
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291 (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_OBJECT_ID),
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parents:
diff changeset
292 var_name, *var_name_len);
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parents:
diff changeset
293 if (data == NULL){
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diff changeset
294 ERROR_MSG("Can't build OID for variable");
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parents:
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295 return NULL;
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parents:
diff changeset
296 }
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parents:
diff changeset
297 switch(var_val_type){
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parents:
diff changeset
298 case ASN_INTEGER:
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299 data = asn_build_int(data, listlength, var_val_type,
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parents:
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300 (long *)var_val, var_val_len);
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parents:
diff changeset
301 break;
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jlarmour
parents:
diff changeset
302 case ASN_GAUGE:
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parents:
diff changeset
303 case ASN_COUNTER:
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parents:
diff changeset
304 case ASN_TIMETICKS:
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parents:
diff changeset
305 case ASN_UINTEGER:
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parents:
diff changeset
306 data = asn_build_unsigned_int(data, listlength, var_val_type,
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jlarmour
parents:
diff changeset
307 (u_long *)var_val, var_val_len);
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jlarmour
parents:
diff changeset
308 break;
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jlarmour
parents:
diff changeset
309 #ifdef OPAQUE_SPECIAL_TYPES
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parents:
diff changeset
310 case ASN_OPAQUE_COUNTER64:
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jlarmour
parents:
diff changeset
311 case ASN_OPAQUE_U64:
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parents:
diff changeset
312 #endif
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parents:
diff changeset
313 case ASN_COUNTER64:
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parents:
diff changeset
314 data = asn_build_unsigned_int64(data, listlength, var_val_type,
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jlarmour
parents:
diff changeset
315 (struct counter64 *)var_val,
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jlarmour
parents:
diff changeset
316 var_val_len);
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jlarmour
parents:
diff changeset
317 break;
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jlarmour
parents:
diff changeset
318 case ASN_OCTET_STR:
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jlarmour
parents:
diff changeset
319 case ASN_IPADDRESS:
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jlarmour
parents:
diff changeset
320 case ASN_OPAQUE:
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jlarmour
parents:
diff changeset
321 case ASN_NSAP:
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parents:
diff changeset
322 data = asn_build_string(data, listlength, var_val_type,
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jlarmour
parents:
diff changeset
323 var_val, var_val_len);
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jlarmour
parents:
diff changeset
324 break;
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jlarmour
parents:
diff changeset
325 case ASN_OBJECT_ID:
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parents:
diff changeset
326 data = asn_build_objid(data, listlength, var_val_type,
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jlarmour
parents:
diff changeset
327 (oid *)var_val, var_val_len / sizeof(oid));
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jlarmour
parents:
diff changeset
328 break;
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jlarmour
parents:
diff changeset
329 case ASN_NULL:
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parents:
diff changeset
330 data = asn_build_null(data, listlength, var_val_type);
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jlarmour
parents:
diff changeset
331 break;
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jlarmour
parents:
diff changeset
332 case ASN_BIT_STR:
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jlarmour
parents:
diff changeset
333 data = asn_build_bitstring(data, listlength, var_val_type,
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jlarmour
parents:
diff changeset
334 var_val, var_val_len);
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jlarmour
parents:
diff changeset
335 break;
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jlarmour
parents:
diff changeset
336 case SNMP_NOSUCHOBJECT:
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jlarmour
parents:
diff changeset
337 case SNMP_NOSUCHINSTANCE:
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jlarmour
parents:
diff changeset
338 case SNMP_ENDOFMIBVIEW:
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jlarmour
parents:
diff changeset
339 data = asn_build_null(data, listlength, var_val_type);
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jlarmour
parents:
diff changeset
340 break;
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jlarmour
parents:
diff changeset
341 #ifdef OPAQUE_SPECIAL_TYPES
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jlarmour
parents:
diff changeset
342 case ASN_OPAQUE_FLOAT:
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parents:
diff changeset
343 data = asn_build_float(data, listlength, var_val_type,
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parents:
diff changeset
344 (float *) var_val, var_val_len);
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jlarmour
parents:
diff changeset
345 break;
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jlarmour
parents:
diff changeset
346 case ASN_OPAQUE_DOUBLE:
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jlarmour
parents:
diff changeset
347 data = asn_build_double(data, listlength, var_val_type,
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jlarmour
parents:
diff changeset
348 (double *) var_val, var_val_len);
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jlarmour
parents:
diff changeset
349 break;
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jlarmour
parents:
diff changeset
350 case ASN_OPAQUE_I64:
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jlarmour
parents:
diff changeset
351 data = asn_build_signed_int64(data, listlength, var_val_type,
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jlarmour
parents:
diff changeset
352 (struct counter64 *) var_val,
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jlarmour
parents:
diff changeset
353 var_val_len);
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jlarmour
parents:
diff changeset
354 break;
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jlarmour
parents:
diff changeset
355 #endif /* OPAQUE_SPECIAL_TYPES */
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jlarmour
parents:
diff changeset
356 default:
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jlarmour
parents:
diff changeset
357 ERROR_MSG("wrong type");
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jlarmour
parents:
diff changeset
358 return NULL;
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jlarmour
parents:
diff changeset
359 }
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jlarmour
parents:
diff changeset
360 if (data == NULL){
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jlarmour
parents:
diff changeset
361 ERROR_MSG("Can't build value");
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jlarmour
parents:
diff changeset
362 return NULL;
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jlarmour
parents:
diff changeset
363 }
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jlarmour
parents:
diff changeset
364 dummyLen = (data - dataPtr) - headerLen;
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jlarmour
parents:
diff changeset
365
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jlarmour
parents:
diff changeset
366 asn_build_sequence(dataPtr, &dummyLen,
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jlarmour
parents:
diff changeset
367 (u_char)(ASN_SEQUENCE | ASN_CONSTRUCTOR), dummyLen);
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jlarmour
parents:
diff changeset
368 return data;
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jlarmour
parents:
diff changeset
369 }