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authorMark Purcell <msp@debian.org>2013-07-09 15:55:55 +0100
committerMark Purcell <msp@debian.org>2013-07-09 15:55:55 +0100
commit669109e369a1be69ff7c4108eb545eff4c5c26d9 (patch)
tree73c117a2e7dd22a7a6ee315101f6357ab43386ec /src/libzrtpcpp/ZrtpPacketBase.h
libzrtpcpp (2.3.4-1) unstable; urgency=medium
* New upstream release - Fixes "CVE-2013-2221 CVE-2013-2222 CVE-2013-2223" (Closes: #714650) # imported from the archive
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diff --git a/src/libzrtpcpp/ZrtpPacketBase.h b/src/libzrtpcpp/ZrtpPacketBase.h
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+/*
+ Copyright (C) 2006-2010 Werner Dittmann
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+/*
+ * Authors: Werner Dittmann <Werner.Dittmann@t-online.de>
+ */
+
+#ifndef _ZRTPPACKETBASE_H_
+#define _ZRTPPACKETBASE_H_
+
+/**
+ * @file ZrtpPacketBase.h
+ * @brief The ZRTP message header class
+ *
+ * This class defines the ZRTP message header and provides access and
+ * check methods.
+ *
+ * @ingroup GNU_ZRTP
+ * @{
+ */
+
+#include <stdio.h>
+#include <stdint.h>
+#include <string.h>
+#include <stdlib.h>
+
+#if defined(_MSC_VER) || defined(WIN32) || defined(_WIN32)
+#include <winsock2.h>
+#else
+#include <netinet/in.h>
+#endif
+
+#include <libzrtpcpp/zrtpPacket.h>
+#include <libzrtpcpp/ZrtpTextData.h>
+#include <libzrtpcpp/ZrtpConfigure.h>
+#include <libzrtpcpp/ZrtpCrc32.h>
+
+// #define DEBUGOUT(deb) deb
+#define DEBUGOUT(deb)
+
+/*
+ * This is the unique ZRTP ID in network order (PZ)
+ */
+const uint16_t zrtpId = 0x505a;
+
+/**
+ * This is the base class for all ZRTP packets
+ *
+ * All other ZRTP packet classes inherit from this class. It does not have
+ * an implementation of its own.
+ *
+ * The standard constructors of the subclasses usually initialize the @c allocate
+ * field with their fixed data array which is large enough to hold all message
+ * data. If an implementation needs to change this to use dynamic memory
+ * allocation only that line in the subclasses must be changed and the destructors
+ * should take care of memory management.
+ *
+ * @author Werner Dittmann <Werner.Dittmann@t-online.de>
+ */
+
+class __EXPORT ZrtpPacketBase {
+
+ private:
+
+ protected:
+ void* allocated; ///< Pointer to ZRTP message data
+ zrtpPacketHeader_t* zrtpHeader; ///< points to the fixed ZRTP header structure
+
+ public:
+ /**
+ * Destructor is empty
+ */
+ virtual ~ZrtpPacketBase() {};
+
+ /**
+ * Get pointer to ZRTP header
+ *
+ * @return
+ * Pointer to ZRTP header structure.
+ */
+ const uint8_t* getHeaderBase() { return (const uint8_t*)zrtpHeader; };
+
+ /**
+ * Check is this is a ZRTP message
+ *
+ * @return
+ * @c true if check was ok
+ */
+ bool isZrtpPacket() { return (ntohs(zrtpHeader->zrtpId) == zrtpId); };
+
+ /**
+ * Get the length in words of the ZRTP message
+ *
+ * @return
+ * The length in words
+ */
+ uint16_t getLength() { return ntohs(zrtpHeader->length); };
+
+ /**
+ * Return pointer to fixed length message type ASCII data
+ *
+ * @return
+ * Pointer to ASCII character array
+ */
+ uint8_t* getMessageType() { return zrtpHeader->messageType; };
+
+ /**
+ * Set the lenght field in the ZRTP header
+ *
+ * @param len
+ * The length of the ZRTP message in words, host order
+ */
+ void setLength(uint16_t len) { zrtpHeader->length = htons(len); };
+
+ /**
+ * Copy the message type ASCII data to ZRTP message type field
+ *
+ * @param msg
+ * Pointer to message type ASCII character array
+ */
+ void setMessageType(uint8_t *msg)
+ { memcpy(zrtpHeader->messageType, msg, sizeof(zrtpHeader->messageType)); };
+
+ /**
+ * Initializes the ZRTP Id field
+ */
+ void setZrtpId() { zrtpHeader->zrtpId = htons(zrtpId); }
+};
+
+/**
+ * @}
+ */
+#endif // ZRTPPACKETBASE