EMILE/libemile/emile_second_get_configuration.c
2007-08-24 09:27:29 +00:00

50 lines
920 B
C

/*
*
* (c) 2005-2007 Laurent Vivier <Laurent@lvivier.info>
*
*/
#include <sys/types.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include "libemile.h"
#include "emile.h"
char* emile_second_get_configuration(int fd)
{
char *conf = NULL;
emile_l2_header_t header;
int ret;
int size;
off_t offset;
memset(&header, 0, sizeof(header));
ret = read(fd, &header, sizeof(header));
if (!EMILE_COMPAT(EMILE_06_SIGNATURE, read_long(&header.signature)))
{
offset = lseek(fd, FIRST_LEVEL_SIZE, SEEK_SET);
ret = read(fd, &header, sizeof(header));
if (!EMILE_COMPAT(EMILE_06_SIGNATURE, read_long(&header.signature)))
goto exit;
}
if (ret != sizeof(header))
goto exit;
size = read_short(&header.conf_size);
conf = (char*)malloc(size);
if (conf == NULL)
goto exit;
ret = read(fd, conf, size);
if (ret != size)
return NULL;
exit:
lseek(fd, offset, SEEK_SET);
return conf;
}