Mercurial > trustbridge

annotate ui/certificate.cpp @ 856:797aa8d9c785

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(issue48) Fallback to HKEY_USERS on hive load failure If the hive can not be loaded it might mean that the user is currently logged on. In that case we can access his registry via HKEY_USERS.
author Andre Heinecke <andre.heinecke@intevation.de>
date Thu, 31 Jul 2014 12:56:26 +0200
parents 320a64d58e62
children 2b3526ef2d69
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 }
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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/