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udp: udp_send and udp_send_chksum: Check for PCB NULL pointer and PCB must not be the new IP_ANY_TYPE, but a real IPv4 and IPv6 address

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This commit is contained in:
Dirk Ziegelmeier 2016-02-26 09:20:18 +01:00
parent bf8bcfafe2
commit a5214abd04
1 changed files with 9 additions and 0 deletions
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9
src/core/udp.c
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@ -492,6 +492,7 @@ chkerr:
* - ERR_OK. Successful. No error occurred. * - ERR_OK. Successful. No error occurred.
* - ERR_MEM. Out of memory. * - ERR_MEM. Out of memory.
* - ERR_RTE. Could not find route to destination address. * - ERR_RTE. Could not find route to destination address.
* - ERR_VAL. No PCB or PCB is dual-stack
* - More errors could be returned by lower protocol layers. * - More errors could be returned by lower protocol layers.
* *
* @see udp_disconnect() udp_sendto() * @see udp_disconnect() udp_sendto()
@ -499,6 +500,10 @@ chkerr:
err_t err_t
udp_send(struct udp_pcb *pcb, struct pbuf *p) udp_send(struct udp_pcb *pcb, struct pbuf *p)
{ {
if ((pcb == NULL) || IP_IS_ANY_TYPE_VAL(pcb->remote_ip)) {
return ERR_VAL;
}
/* send to the packet using remote ip and port stored in the pcb */ /* send to the packet using remote ip and port stored in the pcb */
return udp_sendto(pcb, p, &pcb->remote_ip, pcb->remote_port); return udp_sendto(pcb, p, &pcb->remote_ip, pcb->remote_port);
} }
@ -510,6 +515,10 @@ err_t
udp_send_chksum(struct udp_pcb *pcb, struct pbuf *p, udp_send_chksum(struct udp_pcb *pcb, struct pbuf *p,
u8_t have_chksum, u16_t chksum) u8_t have_chksum, u16_t chksum)
{ {
if ((pcb == NULL) || IP_IS_ANY_TYPE_VAL(pcb->remote_ip)) {
return ERR_VAL;
}
/* send to the packet using remote ip and port stored in the pcb */ /* send to the packet using remote ip and port stored in the pcb */
return udp_sendto_chksum(pcb, p, &pcb->remote_ip, pcb->remote_port, return udp_sendto_chksum(pcb, p, &pcb->remote_ip, pcb->remote_port,
have_chksum, chksum); have_chksum, chksum);