/* Used to read packets in random-access fashion */
static gboolean
cosine_seek_read(wtap *wth, gint64 seek_off, struct wtap_pkthdr *phdr,
Buffer *buf, int *err, gchar **err_info)
{
int pkt_len;
char line[COSINE_LINE_LENGTH];
if (file_seek(wth->random_fh, seek_off, SEEK_SET, err) == -1)
return FALSE;
if (file_gets(line, COSINE_LINE_LENGTH, wth->random_fh) == NULL) {
*err = file_error(wth->random_fh, err_info);
if (*err == 0) {
*err = WTAP_ERR_SHORT_READ;
}
return FALSE;
}
/* Parse the header */
pkt_len = parse_cosine_rec_hdr(phdr, line, err, err_info);
if (pkt_len == -1)
return FALSE;
/* Convert the ASCII hex dump to binary data */
return parse_cosine_hex_dump(wth->random_fh, phdr, pkt_len, buf, err,
err_info);
}
/* Find the next packet and parse it; called from wtap_read(). */
static gboolean cosine_read(wtap *wth, int *err, gchar **err_info,
gint64 *data_offset)
{
gint64 offset;
guint8 *buf;
int pkt_len, caplen;
char line[COSINE_LINE_LENGTH];
/* Find the next packet */
offset = cosine_seek_next_packet(wth, err, err_info, line);
if (offset < 0)
return FALSE;
/* Parse the header */
pkt_len = parse_cosine_rec_hdr(wth, line, &wth->pseudo_header, err,
err_info);
if (pkt_len == -1)
return FALSE;
/* Make sure we have enough room for the packet */
buffer_assure_space(wth->frame_buffer, COSINE_MAX_PACKET_LEN);
buf = buffer_start_ptr(wth->frame_buffer);
/* Convert the ASCII hex dump to binary data */
if ((caplen = parse_cosine_hex_dump(wth->fh, pkt_len, buf, err,
err_info)) == -1)
return FALSE;
wth->data_offset = offset;
wth->phdr.caplen = caplen;
*data_offset = offset;
return TRUE;
}
/* Find the next packet and parse it; called from wtap_read(). */
static gboolean cosine_read(wtap *wth, int *err, gchar **err_info,
gint64 *data_offset)
{
gint64 offset;
int pkt_len;
char line[COSINE_LINE_LENGTH];
/* Find the next packet */
offset = cosine_seek_next_packet(wth, err, err_info, line);
if (offset < 0)
return FALSE;
*data_offset = offset;
/* Parse the header */
pkt_len = parse_cosine_rec_hdr(&wth->phdr, line, err, err_info);
if (pkt_len == -1)
return FALSE;
/* Convert the ASCII hex dump to binary data */
return parse_cosine_hex_dump(wth->fh, &wth->phdr, pkt_len,
wth->frame_buffer, err, err_info);
}
/* Used to read packets in random-access fashion */
static gboolean
cosine_seek_read (wtap *wth, gint64 seek_off,
union wtap_pseudo_header *pseudo_header, guint8 *pd, int len,
int *err, gchar **err_info)
{
char line[COSINE_LINE_LENGTH];
if (file_seek(wth->random_fh, seek_off, SEEK_SET, err) == -1)
return FALSE;
if (file_gets(line, COSINE_LINE_LENGTH, wth->random_fh) == NULL) {
*err = file_error(wth->random_fh, err_info);
if (*err == 0) {
*err = WTAP_ERR_SHORT_READ;
}
return FALSE;
}
if (parse_cosine_rec_hdr(NULL, line, pseudo_header, err, err_info) == -1)
return FALSE;
return parse_cosine_hex_dump(wth->random_fh, len, pd, err, err_info);
}