Function print_dset

dset.c:491–580

! \brief * Create a Contact header field from the dset * array */

 * array
 */
char* print_dset(struct sip_msg* msg, int* len)
{
	int cnt, i, idx;
	unsigned int qlen;
	char* p, *qbuf;
	static char *dset = NULL;
	static unsigned int dset_len = 0;
	struct msg_branch *br;

	if (msg->new_uri.s) {
		cnt = 1;
		*len = msg->new_uri.len+2 /*for <>*/;
		if (get_ruri_q(msg) != Q_UNSPECIFIED) {
			*len += Q_PARAM_LEN + len_q(get_ruri_q(msg));
		}
	} else {
		cnt = 0;
		*len = 0;
	}

	for( idx=0 ; (br=get_msg_branch(idx))!=NULL ; idx++ ) {
		cnt++;
		*len += br->uri.len+2 /*for <>*/ ;
		if (br->q != Q_UNSPECIFIED) {
			*len += Q_PARAM_LEN + len_q(br->q);
		}
	}

	if (cnt == 0) return 0;

	*len += CONTACT_LEN + CRLF_LEN + (cnt - 1) * CONTACT_DELIM_LEN;

	/* does the current buffer fit the new dset ? */
	if (*len + 1 > dset_len) {
		/* need to resize */
		dset = pkg_realloc(dset, *len + 1);
		if (!dset) {
			dset_len = 0;
			LM_ERR("failed to allocate redirect buffer for %d bytes\n", *len + 1);
			return NULL;
		}
		dset_len = *len + 1;
	}

	memcpy(dset, CONTACT, CONTACT_LEN);
	p = dset + CONTACT_LEN;
	if (msg->new_uri.s) {
		*p++ = '<';
		memcpy(p, msg->new_uri.s, msg->new_uri.len);
		p += msg->new_uri.len;
		*p++ = '>';

		if (get_ruri_q(msg) != Q_UNSPECIFIED) {
			memcpy(p, Q_PARAM, Q_PARAM_LEN);
			p += Q_PARAM_LEN;

			qbuf = q2str(get_ruri_q(msg), &qlen);
			memcpy(p, qbuf, qlen);