mirror of
https://github.com/xcat2/confluent.git
synced 2024-11-23 01:53:28 +00:00
107 lines
3.5 KiB
C
107 lines
3.5 KiB
C
#include <dirent.h>
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#include <fcntl.h>
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#include <sys/socket.h>
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#include <ifaddrs.h>
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#include <net/if_arp.h>
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#include <linux/if_packet.h>
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#include <arpa/inet.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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int add_uuid(char* destination, int maxsize) {
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int uuidf;
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int uuidsize;
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uuidf = open("/sys/devices/virtual/dmi/id/product_uuid", O_RDONLY);
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if (uuidf < 1) { return 0; }
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strncpy(destination, "/uuid=", maxsize);
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uuidsize = read(uuidf, destination + 6, maxsize - 6);
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close(uuidf);
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if (destination[uuidsize + 5] == '\n') {
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destination[uuidsize + 5 ] = 0;
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}
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return uuidsize + 6;
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}
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int add_macs(char* destination, int maxsize) {
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struct ifaddrs *ifc, *ifa;
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struct sockaddr_ll *lla;
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int offset;
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char macaddr[32];
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offset = 0;
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getifaddrs(&ifa);
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for (ifc = ifa; ifc != NULL; ifc = ifc->ifa_next) {
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if (ifc->ifa_addr->sa_family != PF_PACKET)
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continue;
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lla = (struct sockaddr_ll *)ifc->ifa_addr;
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if (lla->sll_hatype == ARPHRD_INFINIBAND) {
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snprintf(macaddr, 32, "/mac=%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x",
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lla->sll_addr[12], lla->sll_addr[13], lla->sll_addr[14],
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lla->sll_addr[15], lla->sll_addr[16], lla->sll_addr[17],
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lla->sll_addr[18], lla->sll_addr[19]
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);
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} else if (lla->sll_hatype == ARPHRD_ETHER) {
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snprintf(macaddr, 32, "/mac=%02x:%02x:%02x:%02x:%02x:%02x",
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lla->sll_addr[0], lla->sll_addr[1], lla->sll_addr[2],
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lla->sll_addr[3], lla->sll_addr[4], lla->sll_addr[5],
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lla->sll_addr[6]
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);
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} else {
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continue;
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}
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strncpy(destination + offset, macaddr, maxsize - offset);
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offset += strnlen(macaddr, 32);
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}
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freeifaddrs(ifa);
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}
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int main(int argc, char* argv[]) {
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struct ifaddrs *ifc, *ifa;
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struct sockaddr_in6 *in6;
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int ns;
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struct sockaddr_in6 addr, dst;
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char msg[1024];
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int ifidx, offset;
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socklen_t dstsize;
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dstsize = sizeof(dst);
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memset(msg, 0, 1024);
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memset(&addr, 0, sizeof(addr));
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memset(&dst, 0, sizeof(dst));
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addr.sin6_family = PF_INET6;
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addr.sin6_addr = in6addr_any;
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addr.sin6_port = htons(190);
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dst.sin6_family = PF_INET6;
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dst.sin6_port = htons(1900);
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inet_pton(PF_INET6, "ff02::c", &dst.sin6_addr);
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strncpy(msg, "M-SEARCH * HTTP/1.1\r\nST: urn:xcat.org:service:confluent:", 1024);
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offset = strnlen(msg, 1024);
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if (argc > 1) {
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snprintf(msg + offset, 1024 - offset, "/node=%s", argv[1]);
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offset = strnlen(msg, 1024);
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}
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add_uuid(msg + offset, 1024 - offset);
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offset = strnlen(msg, 1024);
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add_macs(msg + offset, 1024 - offset);
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offset = strnlen(msg, 1024);
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ns = socket(PF_INET6, SOCK_DGRAM, 0);
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bind(ns, (const struct sockaddr *)&addr, sizeof(addr));
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getifaddrs(&ifa);
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for (ifc = ifa; ifc != NULL; ifc = ifc->ifa_next) {
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if (ifc->ifa_addr->sa_family != PF_INET6) {
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continue;
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}
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in6 = (struct sockaddr_in6 *)ifc->ifa_addr;
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if (in6->sin6_scope_id == 0)
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continue;
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ifidx = in6->sin6_scope_id;
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setsockopt(ns, IPPROTO_IPV6, IPV6_MULTICAST_IF, &ifidx, sizeof(ifidx));
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sendto(ns, msg, strlen(msg), 0, (const struct sockaddr *)&dst, sizeof(dst));
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}
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recvfrom(ns, msg, 1024, 0, (struct sockaddr *)&dst, &dstsize);
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inet_ntop(dst.sin6_family, &dst.sin6_addr, msg, dstsize);
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printf(msg);
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}
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