Function pv_get_hdr

pvar.c:2954–3111

}

static int pv_get_hdr(struct sip_msg *msg,  pv_param_t *param, pv_value_t *res)
{
	int idx;
	int idxf;
	pv_value_t tv;
	struct hdr_field *hf;
	struct hdr_field *hf0;
	char *p;
	int n;
	int ret;

	if ( (ret=pv_get_hdr_prolog(msg,  param, res, &tv)) <= 0 )
	    	return ret;

	if (tv.flags==0) {
		/* it is a known header -> use type to find it */
		for (hf=msg->headers; hf; hf=hf->next) {
			if (tv.ri==hf->type)
				break;
		}
	} else {
		/* it is an un-known header -> use name to find it */
		for (hf=msg->headers; hf; hf=hf->next) {
			if (hf->type==HDR_OTHER_T && hf->name.len==tv.rs.len
			&& strncasecmp(hf->name.s, tv.rs.s, hf->name.len)==0)
				break;
		}
	}

	if(hf==NULL)
		return pv_get_null(msg, param, res);
	/* get the index */
	if(pv_get_spec_index(msg, param, &idx, &idxf)!=0)
	{
		LM_ERR("invalid index\n");
		return -1;
	}

	/* get the value */
	res->flags = PV_VAL_STR;
	if(idxf!=PV_IDX_ALL && idx==0)
	{
		res->rs  = hf->body;
		return 0;
	}
	if(idxf==PV_IDX_ALL)
	{
		p = pv_local_buf;
		do {
			if(p!=pv_local_buf)
			{
				if(p-pv_local_buf+PV_FIELD_DELIM_LEN+1>PV_LOCAL_BUF_SIZE)
				{
					LM_ERR("local buffer length exceeded\n");
					return pv_get_null(msg, param, res);
				}
				memcpy(p, PV_FIELD_DELIM, PV_FIELD_DELIM_LEN);
				p += PV_FIELD_DELIM_LEN;