141 lines
3.8 KiB
C
141 lines
3.8 KiB
C
#include "utils.h"
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#include <pico_ipv4.h>
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#include <pico_ipv6.h>
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#include <pico_socket.h>
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extern void app_udpclient(char *arg);
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/*** START Multicast SEND ***/
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/*
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* multicast send expects the following format: mcastsend:link_addr:mcast_addr:sendto_port:listen_port
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* link_addr: mcastsend picoapp IP address
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* mcast_addr: multicast IP address to send to
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* sendto_port: port number to send multicast traffic to
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* listen_port: port number on which the mcastsend can receive data
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*
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* f.e.: ./build/test/picoapp.elf --vde pic0:/tmp/pic0.ctl:10.40.0.2:255.255.255.0: -a mcastsend:10.40.0.2:224.7.7.7:6667:6667
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*/
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extern struct udpclient_pas *udpclient_pas;
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#ifdef PICO_SUPPORT_MCAST
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void app_mcastsend_ipv6(char *arg)
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{
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int retval = 0;
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char *maddr = NULL, *laddr = NULL, *lport = NULL, *sport = NULL;
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uint16_t sendto_port = 0;
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struct pico_ip6 inaddr_link = {
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0
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}, inaddr_mcast = {
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0
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};
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char *new_arg = NULL, *p = NULL, *nxt = arg;
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struct pico_ip_mreq mreq = ZERO_MREQ_IP6;
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/* start of parameter parsing */
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if (nxt) {
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nxt = cpy_arg(&laddr, nxt);
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if (laddr) {
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pico_string_to_ipv6(laddr, &inaddr_link.addr[0]);
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} else {
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goto out;
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}
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} else {
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/* no arguments */
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goto out;
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}
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if (nxt) {
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nxt = cpy_arg(&maddr, nxt);
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if (maddr) {
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pico_string_to_ipv6(maddr, &inaddr_mcast.addr[0]);
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} else {
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goto out;
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}
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} else {
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/* missing multicast address */
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goto out;
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}
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if (nxt) {
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nxt = cpy_arg(&sport, nxt);
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if (sport && atoi(sport)) {
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sendto_port = short_be(atoi(sport));
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} else {
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/* incorrect send_port */
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goto out;
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}
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} else {
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/* missing send_port */
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goto out;
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}
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if (nxt) {
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nxt = cpy_arg(&lport, nxt);
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if (lport && atoi(lport)) {
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/* unused at this moment */
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/* listen_port = short_be(atoi(lport)); */
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} else {
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/* incorrect listen_port */
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goto out;
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}
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} else {
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/* missing listen_port */
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goto out;
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}
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picoapp_dbg("\n%s: mcastsend started. Sending packets to %s:%u\n\n", __FUNCTION__, maddr, short_be(sendto_port));
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/* udpclient:dest_addr:sendto_port[:listen_port:datasize:loops:subloops] */
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new_arg = calloc(1, strlen(maddr) + 1 + strlen(sport) + 1 + strlen(lport) + strlen(",64,10,5,") + 1);
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p = strcat(new_arg, maddr);
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p = strcat(p + strlen(maddr), ",");
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p = strcat(p + 1, sport);
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p = strcat(p + strlen(sport), ",");
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p = strcat(p + 1, lport);
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p = strcat(p + strlen(lport), ",64,10,5,");
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/* DAD needs to verify the link address before we can continue */
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while(!pico_ipv6_link_get(&inaddr_link)) {
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pico_stack_tick();
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usleep(2000);
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}
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app_udpclient(new_arg);
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memcpy(&mreq.mcast_group_addr, &inaddr_mcast, sizeof(struct pico_ip6));
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memcpy(&mreq.mcast_link_addr, &inaddr_link, sizeof(struct pico_ip6));
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if(pico_socket_setoption(udpclient_pas->s, PICO_IP_ADD_MEMBERSHIP, &mreq) < 0) {
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picoapp_dbg("%s: socket_setoption PICO_IP_ADD_MEMBERSHIP failed: %s\n", __FUNCTION__, strerror(pico_err));
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retval = 1;
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}
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if (new_arg)
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free(new_arg);
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if (lport)
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free(lport);
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if (maddr)
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free(maddr);
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if (sport)
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free(sport);
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if (laddr)
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free(laddr);
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if (retval)
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exit(retval);
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return;
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out:
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picoapp_dbg("mcastsend expects the following format: mcastsend:link_addr:mcast_addr:sendto_port:listen_port\n");
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exit(255);
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}
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#else
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void app_mcastsend_ipv6(char *arg)
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{
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picoapp_dbg("ERROR: PICO_SUPPORT_MCAST disabled\n");
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return;
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}
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#endif
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/*** END Multicast SEND ***/
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