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annotate ui/downloader.cpp @ 30:381558ff6f26

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author Andre Heinecke <aheinecke@intevation.de>
date Thu, 13 Mar 2014 17:26:33 +0000
parents 62cd56cea09b
children d8e93fa1fc93
rev   line source
10
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1 #include "downloader.h"
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2
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3 #ifndef DOWNLOAD_SERVER
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4 #define DOWNLOAD_SERVER "https://www.intevation.de"
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5 #endif
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6
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7 #include <QFile>
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8 #include <QDir>
10
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9 #include <QDebug>
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10 #include <QStandardPaths>
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11 #include <QUuid>
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12 #include <QApplication>
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13
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14 #include <polarssl/net.h>
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15 #include <polarssl/ssl.h>
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16 #include <polarssl/entropy.h>
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17 #include <polarssl/ctr_drbg.h>
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18 #include <polarssl/error.h>
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19 #include <polarssl/certs.h>
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20
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21 #define MAX_SW_SIZE 10485760
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22 #define MAX_LIST_SIZE 1048576
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23
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24 QString getErrorMsg(int ret)
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25 {
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26 char errbuf[255];
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27 polarssl_strerror(ret, errbuf, 255);
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28 errbuf[254] = '\0'; /* Just to be sure */
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29 return QString::fromLatin1(errbuf);
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30 }
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31
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32 Downloader::Downloader(QObject* parent, const QString& url,
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33 const QByteArray& certificate,
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34 const QDateTime& newestSW,
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35 const QDateTime& newestList):
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36 QThread(parent),
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37 mUrl(url),
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38 mPinnedCert(certificate),
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39 mLastModSW(newestSW),
27
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40 mLastModList(newestList),
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41 mErrorState(NoError),
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42 mInitialized(false),
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43 mServerFD(-1)
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44 {
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45 int ret = -1;
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46
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47 memset(&mSSL, 0, sizeof(ssl_context));
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48
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49 if (certificate.isEmpty()) {
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50 QFile certResource(":certs/kolab.org");
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51 certResource.open(QFile::ReadOnly);
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52 mPinnedCert = certResource.readAll();
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53 certResource.close();
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54 }
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55
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56 ret = init();
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57 if (ret == 0) {
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58 mInitialized = true;
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59 } else {
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60 qDebug() << "Initialization error: " + getErrorMsg(ret);
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61 }
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62 }
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63
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64 int Downloader::init()
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65 {
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66 int ret = -1;
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67 QUuid uuid = QUuid::createUuid();
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68 QString personalString = QApplication::applicationName() + uuid.toString();
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69 QByteArray personalBa = personalString.toLocal8Bit();
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70
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71 x509_crt_init(&mX509PinnedCert);
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72 entropy_init(&mEntropy);
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73
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74 ret = ssl_init(&mSSL);
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75 if (ret != 0) {
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76 /* The only documented error is malloc failed */
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77 mErrorState = ErrUnknown;
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78 return ret;
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79 }
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80
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81 /*
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82 * Initialize random generator.
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83 * Personalisation string, does not need to be random but
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84 * should be unique according to documentation.
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85 *
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86 * the ctr_drbg structure does not need to be freed explicitly.
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87 */
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88 ret = ctr_drbg_init(&mCtr_drbg, entropy_func, &mEntropy,
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89 (const unsigned char*) personalBa.constData(),
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90 personalBa.size());
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91 if (ret != 0) {
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92 ssl_free(&mSSL);
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93 mErrorState = ErrUnknown;
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94 return ret;
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95 }
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96
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97 ret = x509_crt_parse(&mX509PinnedCert,
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98 (const unsigned char*) mPinnedCert.constData(),
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99 mPinnedCert.size());
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100 if (ret != 0){
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101 ssl_free(&mSSL);
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102 mErrorState = InvalidPinnedCertificate;
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103 return ret;
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104 }
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105
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106 ssl_set_endpoint(&mSSL, SSL_IS_CLIENT);
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107 ssl_set_authmode(&mSSL, SSL_VERIFY_OPTIONAL);
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108 ssl_set_ca_chain(&mSSL, &mX509PinnedCert, NULL, NULL);
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109 ssl_set_renegotiation(&mSSL, SSL_RENEGOTIATION_DISABLED);
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110 ssl_set_rng(&mSSL, ctr_drbg_random, &mCtr_drbg);
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111
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112 return 0;
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113 }
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114
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115 Downloader::~Downloader() {
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116 x509_crt_free(&mX509PinnedCert);
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117 entropy_free(&mEntropy);
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118 if (mInitialized) {
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119 ssl_free(&mSSL);
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120 }
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121 }
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122
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123 QString Downloader::getDataDirectory()
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124 {
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125 QString candidate =
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126 QStandardPaths::writableLocation(QStandardPaths::DataLocation);
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127
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128 if (candidate.isEmpty()) {
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129 qDebug() << "Could not find writeable locaction for me";
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130 return QString();
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131 }
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132
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133 QDir cDir(candidate);
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134
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135 if (!cDir.exists()) {
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136 if (!cDir.mkpath(candidate)) {
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137 qDebug() << "Could not create path to: " << candidate;
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138 return QString();
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139 }
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140 }
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141 return cDir.absolutePath();
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142 }
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143
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
144 int Downloader::establishSSLConnection() {
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
145 int ret = -1;
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
146 const x509_crt *peerCert;
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
147
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
148 mErrorState = ErrUnknown;
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
149
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
150 if (mServerFD == -1) {
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
151 return -1;
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
152 }
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
153
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
154 ssl_set_bio(&mSSL, net_recv, &mServerFD,
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
155 net_send, &mServerFD);
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
156
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
157 while ((ret = ssl_handshake(&mSSL)) != 0) {
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
158 if (ret != POLARSSL_ERR_NET_WANT_READ &&
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
159 ret != POLARSSL_ERR_NET_WANT_WRITE) {
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
160 qDebug() << "SSL Handshake failed: "
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
161 << getErrorMsg(ret);
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
162 return ret;
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
163 }
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
164 }
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
165
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
166 ret = ssl_get_verify_result(&mSSL);
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
167
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
168 if (ret != 0 ) {
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
169
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
170 if( ( ret & BADCERT_EXPIRED ) != 0 )
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
171 qDebug() << "server certificate has expired";
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
172
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
173 if( ( ret & BADCERT_REVOKED ) != 0 )
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
174 qDebug() << "server certificate has been revoked";
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
175
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
176 if( ( ret & BADCERT_CN_MISMATCH ) != 0 )
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
177 qDebug() << "CN mismatch";
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
178
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
179 if( ( ret & BADCERT_NOT_TRUSTED ) != 0 )
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
180 qDebug() << "self-signed or not signed by a trusted CA";
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
181
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
182 #ifdef RELEASE_BUILD
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
183 return -1;
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
184 #endif
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
185 }
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
186
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
187 peerCert = ssl_get_peer_cert(&mSSL);
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
188
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
189 if (!peerCert) {
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
190 mErrorState = InvalidCertificate;
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
191 qDebug() << "Failed to get peer cert";
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
192 return -1;
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
193 }
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
194
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
195 if (peerCert->raw.len == 0 ||
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
196 peerCert->raw.len != mX509PinnedCert.raw.len) {
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
197 mErrorState = InvalidCertificate;
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
198 qDebug() << "Certificate length mismatch";
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
199 return -1;
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
200 }
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
201
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
202 /* You can never be sure what those c++ operators do..
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
203 if (mPinnedCert != QByteArray::fromRawData(
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
204 (const char*) peerCert->raw.p,
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
205 peerCert->raw.len)) {
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
206 qDebug() << "Certificate content mismatch";
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
207 }
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
208 */
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
209
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
210 for (unsigned int i = 0; i < peerCert->raw.len; i++) {
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
211 if (peerCert->raw.p[i] != mX509PinnedCert.raw.p[i]) {
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
212 qDebug() << "Certificate content mismatch";
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
213 mErrorState = InvalidCertificate;
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
214 return -1;
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
215 }
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
216 }
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
217 mErrorState = NoError;
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
218 return 0;
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
219 }
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
220
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
221
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
222 void Downloader::run() {
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
223 int ret;
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
224
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
225 if (!mInitialized) {
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
226 emit error(tr("Failed to initialize SSL Module."), ErrUnknown);
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
227 return;
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
228 }
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
229
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
230 ret = net_connect(&mServerFD, mUrl.host().toLatin1().constData(),
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
231 mUrl.port(443));
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
232 if (ret != 0) {
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
233 mErrorState = NoConnection;
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
234 emit error(tr("Failed to connect to %1.").arg(mUrl.host()),
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
235 mErrorState);
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
236 return;
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
237 }
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
238
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
239 emit progress(tr("Connected"), 1, -1);
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
240
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
241 ret = establishSSLConnection();
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
242 if (ret != 0) {
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
243 qDebug() << "SSL conncetion failed: " << getErrorMsg(ret);
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
244 emit error(tr("Failed to connect to %1.").arg(mUrl.host()),
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
245 mErrorState);
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
246 return;
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
247 }
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
248
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
249 qDebug() << "Connected to: " << mUrl.host();
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
250 // TODO
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
251
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
252 emit progress(tr("Closing"), 1, -1);
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
253 ssl_close_notify (&mSSL);
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
254
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
255 if (mServerFD != -1) {
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
256 net_close(mServerFD);
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
257 mServerFD = -1;
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
258 }
62cd56cea09b Start on polarssl Downloader.
Andre Heinecke <andre.heinecke@intevation.de>
parents: 18
diff changeset
259 }
http://wald.intevation.org/projects/trustbridge/