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ip-packet: Define our own structs to handle TCP/UDP headers

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This commit is contained in:
Tobias Brunner 2014-07-24 14:12:50 +02:00
parent 25fcbab678
commit f8613abc8a
1 changed files with 27 additions and 2 deletions
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29
src/libipsec/ip_packet.c
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@ -22,12 +22,37 @@
#include <sys/types.h>
#include <netinet/in.h>
#include <netinet/ip.h>
#include <netinet/udp.h>
#include <netinet/tcp.h>
#ifdef HAVE_NETINET_IP6_H
#include <netinet/ip6.h>
#endif
/**
* TCP header, defined here because platforms disagree regarding member names
* and unfortunately Android does not define a variant with BSD names.
*/
struct tcphdr {
u_int16_t source;
u_int16_t dest;
u_int32_t seq;
u_int32_t ack_seq;
u_int16_t flags;
u_int16_t window;
u_int16_t check;
u_int16_t urg_ptr;
} __attribute__((packed));
/**
* UDP header, similar to the TCP header the system headers disagree on member
* names. Linux uses a union and on Android we could define __FAVOR_BSD to get
* the BSD member names, but this is simpler and more consistent with the above.
*/
struct udphdr {
u_int16_t source;
u_int16_t dest;
u_int16_t len;
u_int16_t check;
} __attribute__((packed));
typedef struct private_ip_packet_t private_ip_packet_t;
/**