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Code Issues Releases Wiki Activity

Add ICMP extensions to ICMP PDU

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This commit is contained in:
Matias Fontanini
2015-12-14 21:18:42 -08:00
parent 6e026fcb66
commit fb43cb738b
3 changed files with 86 additions and 9 deletions
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33
include/tins/icmp.h
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@@ -46,6 +46,7 @@
#include "pdu.h"
#include "endianness.h"
#include "ip_address.h"
#include "icmp_extension.h"
namespace Tins {
@@ -297,12 +298,19 @@ namespace Tins {
return address_type(Endian::be_to_host(_icmp.un.gateway));
}
/**
* \brief Getter for the pointer field.
*
* \return Returns the pointer field value.
*/
uint8_t pointer() const { return this->_icmp.un.pointer; }
/**
* \brief Getter for the pointer field.
*
* \return Returns the pointer field value.
*/
uint8_t pointer() const { return this->_icmp.un.rfc4884.pointer; }
/**
* \brief Getter for the length field.
*
* \return Returns the length field value.
*/
uint8_t length() const { return this->_icmp.un.rfc4884.length; }
/**
* \brief Getter for the mtu field.
@@ -358,6 +366,8 @@ namespace Tins {
*/
bool matches_response(const uint8_t *ptr, uint32_t total_sz) const;
const ICMPExtensionsStructure& extensions() { return extensions_; }
/**
* \brief Getter for the PDU's type.
*
@@ -372,6 +382,8 @@ namespace Tins {
return new ICMP(*this);
}
private:
static const uint32_t EXTENSION_PAYLOAD_LIMIT;
TINS_BEGIN_PACK
struct icmphdr {
uint8_t type;
@@ -387,7 +399,11 @@ namespace Tins {
uint16_t unused;
uint16_t mtu;
} frag;
uint8_t pointer;
struct {
uint8_t pointer;
uint8_t length;
uint16_t unused;
} rfc4884;
} un;
} TINS_END_PACK;
@@ -400,8 +416,11 @@ namespace Tins {
*/
void write_serialization(uint8_t *buffer, uint32_t total_sz, const PDU *parent);
void try_parse_extensions(const uint8_t* buffer, uint32_t& total_sz);
icmphdr _icmp;
uint32_t _orig_timestamp_or_address_mask, _recv_timestamp, _trans_timestamp;
ICMPExtensionsStructure extensions_;
};
}