Mercurial > trustbridge

annotate ui/certificate.cpp @ 1118:fd85a02d771d

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(issue54) Implement a privilege drop to execute the program after installation. This commit is extremly ugly as I accidentally worked in a working tree that was partially merged with default. To review the real change please check the commit that will merge this branch into default.
author Andre Heinecke <andre.heinecke@intevation.de>
date Tue, 16 Sep 2014 19:45:19 +0200
parents 9bb9932bb819
children 2a1206932f53
rev   line source
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1 /* Copyright (C) 2014 by Bundesamt für Sicherheit in der Informationstechnik
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2 * Software engineering by Intevation GmbH
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3 *
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4 * This file is Free Software under the GNU GPL (v>=2)
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5 * and comes with ABSOLUTELY NO WARRANTY!
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6 * See LICENSE.txt for details.
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7 */
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8 #include "certificate.h"
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9 #include <QDebug>
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10 #include <QFile>
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11 #include <QStringList>
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12 #include <QObject>
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13
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14 #include <polarssl/sha1.h>
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15
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16 #include "certhelp.h"
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17 #include "listutil.h"
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18
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19 /* Qt wrapper around certhelp functions. */
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20 QString getX509Value(x509_name *namebuf, unsigned char *oid) {
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21 QString retval;
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22 char * buf = get_oid_valstr(namebuf, oid);
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23 if (buf == NULL) {
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24 return retval;
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25 }
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26 retval = QString::fromUtf8(buf, -1);
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27 free(buf);
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28 return retval;
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29 }
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30
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31 void Certificate::parseDetails(const QByteArray& cert) {
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32 x509_crt chain;
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33
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34 x509_crt_init(&chain);
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35 if (x509_crt_parse_der(&chain, (const unsigned char *)cert.data(),
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36 cert.size()) != 0) {
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37 qDebug() << "Failed to parse cert..";
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38 return;
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39 }
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40
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41 mValidFrom = QDateTime(QDate(chain.valid_from.year,
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42 chain.valid_from.mon,
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43 chain.valid_from.day),
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44 QTime(chain.valid_from.hour,
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45 chain.valid_from.min,
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46 chain.valid_from.sec));
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47
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48 mValidTo = QDateTime(QDate(chain.valid_to.year,
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49 chain.valid_to.mon,
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50 chain.valid_to.day),
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51 QTime(chain.valid_to.hour,
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52 chain.valid_to.min,
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53 chain.valid_to.sec));
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54
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55 mSubjectCN = getX509Value(&(chain.subject), CERT_OID_CN);
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56 mSubjectOU = getX509Value(&(chain.subject), CERT_OID_OU);
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57 mSubjectO = getX509Value(&(chain.subject), CERT_OID_O);
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58 mSubjectSN = getX509Value(&(chain.subject), CERT_OID_SN);
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59
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60 /* Calculate sha1 fingerprint */
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61 unsigned char sha1sum[20];
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62 sha1(chain.raw.p, chain.raw.len, sha1sum);
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63 for (int i=0; i < 20; i++) {
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64 mFingerprint += QString("%1").arg(sha1sum[i], 0, 16).rightJustified(2, '0');
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65 if (i != 19) {
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66 mFingerprint += ":";
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67 }
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68 mFingerprint = mFingerprint.toUpper();
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69 }
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70
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71 x509_crt_free(&chain);
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72
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73 mDetails = QObject::tr("Certificate:\n"
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74 " <bold>%1</bold>\n"
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75 " %2, %3\n\n"
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76 "Serial number:\n"
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77 "%4\n"
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78 "Valid from: <bold>%5</bold> to <bold>%6</bold>\n\n"
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79 "Issued by: ..")
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80 .arg(mSubjectCN)
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81 .arg(mSubjectO)
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82 .arg(mSubjectOU)
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83 .arg(mSubjectSN)
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84 .arg(QLocale::system().toString(mValidFrom))
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85 .arg(QLocale::system().toString(mValidTo));
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86
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87 }
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88
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89 Certificate::Certificate(const QByteArray& derData) :
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90 mValid(false),
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91 mEditable(false)
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92 {
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93 if (derData.isEmpty()) {
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94 return;
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95 }
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96
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97 parseDetails(derData);
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98
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99 mValid = !mSubjectCN.isEmpty();
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100
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101 /* Default is installation for new certificates */
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102 mBaseLine = QString::fromLatin1("I:") + derData.toBase64();
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103 }
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104
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105 Certificate::Certificate(const QString& b64Line) :
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106 mValid(false),
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107 mEditable(false)
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108 {
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109 if (b64Line.isEmpty()) {
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110 return;
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111 }
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112
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113 /* Cut of the first two chars (e.g. I: and decode) */
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114 QByteArray derData = QByteArray::fromBase64(
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115 b64Line.right(b64Line.size() - 2).toLatin1());
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116
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117 parseDetails(derData);
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118
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119 /* If the subject CN is set then at least one x509parse
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120 * in polarssl was successfull. And a root certificate
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121 * always needs to have a subject CN */
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122 mValid = !mSubjectCN.isEmpty();
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123
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124 mBaseLine = b64Line;
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125 }
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126
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127 QString Certificate::shortDescription() const {
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128 if (!isValid()) {
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129 return QObject::tr("Failed to parse certificate");
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130 }
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131
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132 QString ret = mSubjectCN; /* Necessary by definition */
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133 /*
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134 if (!mSubjectO.isEmpty()) {
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135 ret += " - " + mSubjectO;
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136 }
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137 */
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138 return ret;
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139 }
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140
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141 QList<Certificate> Certificate::fromFileName(const QString& file_name) {
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142 /* We read the file using Qt to avoid filename encoding problems
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143 * on Windows */
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144
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145 /* TODO change qDebug errors into messageboxes */
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146 QFile certificateFile(file_name);
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147 QByteArray fileContent;
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148 QList<Certificate> retval;
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149 x509_crt chain;
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150 int ret = 0;
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151 if (!certificateFile.open(QIODevice::ReadOnly)) {
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152 qDebug() << "Failed to read file.";
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153 return retval;
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154 }
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155
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156 if (certificateFile.size() > MAX_LINE_LENGTH * MAX_LINES) {
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157 qDebug() << "File too large";
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158 return retval;
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159 }
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160
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161 fileContent = certificateFile.readAll();
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162
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163 x509_crt_init(&chain);
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164
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165 ret = x509_crt_parse(&chain,
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166 reinterpret_cast<const unsigned char*>(fileContent.constData()),
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167 fileContent.size());
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168
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169 if (ret < 0) {
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170 qDebug() << "Failed to parse certificates.";
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171 return retval;
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172 }
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173
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174 if (ret > 0) {
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175 qDebug() << "Some certificates could not be parsed.";
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176 /* Maybe return here? */
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177 }
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178
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179 x509_crt *iter = &chain;
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180
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181 while (iter) {
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182 QByteArray derData(reinterpret_cast<const char*>(iter->raw.p),
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183 static_cast<int>(iter->raw.len));
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184 retval << Certificate(derData);
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185 iter = iter->next;
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186 }
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187 x509_crt_free(&chain);
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188
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189 return retval;
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190 }
355
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191
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192 void Certificate::setInstallCert(bool install)
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193 {
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194 if (install && mBaseLine.startsWith("R:")) {
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195 mBaseLine.replace(0, 1, "I");
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196 }
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197 else if (!install && mBaseLine.startsWith("I:")) {
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198 mBaseLine.replace(0, 1, "R");
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199 }
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200 }
http://wald.intevation.org/projects/trustbridge/