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DiscoveryPhase: Fix the unlikely case the server resturns utf-8 in permissions

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UTF-8 size might be bigger than the size of the QString
In that case we would end up with a non-nill terminated permissions.
This commit is contained in:
Olivier Goffart 2015-06-08 15:40:06 +02:00
parent 5dcb276376
commit 6df7551bdd
1 changed files with 4 additions and 3 deletions
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7
src/libsync/discoveryphase.cpp
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@ -217,17 +217,18 @@ static csync_vio_file_stat_t* propertyMapToFileStat(QMap<QString,QString> map)
file_stat->directDownloadCookies = strdup(value.toUtf8());
file_stat->fields |= CSYNC_VIO_FILE_STAT_FIELDS_DIRECTDOWNLOADCOOKIES;
} else if (property == "permissions") {
auto v = value.toUtf8();
if (value.isEmpty()) {
// special meaning for our code: server returned permissions but are empty
// meaning only reading is allowed for this resource
file_stat->remotePerm[0] = ' ';
// see _csync_detect_update()
file_stat->fields |= CSYNC_VIO_FILE_STAT_FIELDS_PERM;
} else if (value.length() < int(sizeof(file_stat->remotePerm))) {
strncpy(file_stat->remotePerm, value.toUtf8(), sizeof(file_stat->remotePerm));
} else if (v.length() < int(sizeof(file_stat->remotePerm))) {
strncpy(file_stat->remotePerm, v.constData(), sizeof(file_stat->remotePerm));
file_stat->fields |= CSYNC_VIO_FILE_STAT_FIELDS_PERM;
} else {
// old server, keep file_stat->remotePerm empty
qWarning() << "permissions too large" << v;
}
}
}