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hmmst, gotta handle another block type we encountered

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XANTRONIX 2019-01-07 01:00:44 -06:00
parent bc62f8b3c9
commit 58b1ea1b60
2 changed files with 56 additions and 5 deletions
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37
include/hexagram/pcapng.h
View file

@ -34,9 +34,10 @@ typedef struct _hexagram_pcapng_option {
* pcapng block types and structure
*/
typedef enum {
HEXAGRAM_PCAPNG_BLOCK_SECTION = 0x0a0d0d0a,
HEXAGRAM_PCAPNG_BLOCK_INTERFACE = 0x1,
HEXAGRAM_PCAPNG_BLOCK_PACKET = 0x6
HEXAGRAM_PCAPNG_BLOCK_SECTION = 0x0a0d0d0a,
HEXAGRAM_PCAPNG_BLOCK_IF = 0x1,
HEXAGRAM_PCAPNG_BLOCK_IF_STATS = 0x5,
HEXAGRAM_PCAPNG_BLOCK_PACKET = 0x6
} hexagram_pcapng_block_type;
typedef struct _hexagram_pcapng_block_header {
@ -80,11 +81,28 @@ typedef struct _hexagram_pcapng_section {
#define HEXAGRAM_PCAPNG_OPTION_IF_FCSLEN 13
#define HEXAGRAM_PCAPNG_OPTION_IF_TSOFFSET 14
typedef struct _hexagram_pcapng_interface {
typedef struct _hexagram_pcapng_if {
uint16_t linktype,
reserved;
uint32_t snaplen;
} hexagram_pcapng_interface;
} hexagram_pcapng_if;
/*
* pcapng interface statistics block structure
*/
#define HEXAGRAM_PCAPNG_OPTION_ISB_STARTTIME 2
#define HEXAGRAM_PCAPNG_OPTION_ISB_ENDTIME 3
#define HEXAGRAM_PCAPNG_OPTION_ISB_IFRECV 4
#define HEXAGRAM_PCAPNG_OPTION_ISB_IFDROP 5
#define HEXAGRAM_PCAPNG_OPTION_ISB_FILTERACCEPT 6
#define HEXAGRAM_PCAPNG_OPTION_ISB_OSDROP 7
#define HEXAGRAM_PCAPNG_OPTION_ISB_USRDELIV 8
typedef struct _hexagram_pcapng_if_stats {
uint32_t if_id,
timestamp_high,
timestamp_low;
} hexagram_pcapng_if_stats;
/*
* pcapng packet block structure
@ -100,12 +118,21 @@ typedef struct _hexagram_pcapng_packet {
origlen;
} hexagram_pcapng_packet;
/*
* pcapng stream reading facilities
*/
typedef struct _hexagram_pcapng_stream hexagram_pcapng_stream;
typedef int (hexagram_pcapng_block_handler)(int fd,
uint32_t type,
size_t length);
ssize_t hexagram_pcapng_stream_read(int fd,
hexagram_pcapng_block_handler *handler,
int *error);
#endif /* _HEXAGRAM_PCAPNG_H */

24
src/pcapng.c
View file

@ -1,3 +1,4 @@
#include <stdlib.h>
#include <stdint.h>
#include <fcntl.h>
#include <unistd.h>
@ -6,6 +7,29 @@
#include <hexagram/pcapng.h>
struct _hexagram_pcapng_stream {
int fd;
uint32_t if_count;
hexagram_pcapng_section *section;
hexagram_pcapng_if *ifs;
hexagram_pcapng_if_stats *stats;
};
hexagram_pcapng_stream *hexagram_pcapng_stream_open_fd(int fd) {
hexagram_pcapng_stream *stream;
if ((stream = malloc(sizeof(*stream))) == NULL) {
goto error_malloc_stream;
}
stream->if_count = 0;
return stream;
error_malloc_stream:
return NULL;
}
ssize_t hexagram_pcapng_stream_read(fd, handler, error)
int fd;
hexagram_pcapng_block_handler *handler;