diff --git a/tools/pingd2.c b/tools/pingd2.c index 8fa56840ff..5c2eddffc6 100644 --- a/tools/pingd2.c +++ b/tools/pingd2.c @@ -1,537 +1,533 @@ /* * Copyright (C) 2004 Andrew Beekhof * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This software is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * You should have received a copy of the GNU General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include #include #include #include #include #include #include #include #include #include #include #ifdef HAVE_SYS_SOCKET_H # include #endif #include #include #include #include #include #include #include #include #include #include #ifdef HAVE_GETOPT_H # include #endif #include #include int ident; /* our pid */ typedef struct ping_node_s { int fd; /* ping socket */ int iseq; /* sequence number */ gboolean type; union { struct sockaddr raw; struct sockaddr_in v4; /* ipv4 ping addr */ struct sockaddr_in6 v6; /* ipv6 ping addr */ } addr; char dest[256]; char *host; } ping_node; /* * in_cksum -- * Checksum routine for Internet Protocol family headers (C Version) * This function taken from Mike Muuss' ping program. */ static int in_cksum (u_short *addr, size_t len) { size_t nleft = len; u_short * w = addr; int sum = 0; u_short answer = 0; /* * The IP checksum algorithm is simple: using a 32 bit accumulator (sum) * add sequential 16 bit words to it, and at the end, folding back all * the carry bits from the top 16 bits into the lower 16 bits. */ while (nleft > 1) { sum += *w++; nleft -= 2; } /* Mop up an odd byte, if necessary */ if (nleft == 1) { sum += *(u_char*)w; } /* Add back carry bits from top 16 bits to low 16 bits */ sum = (sum >> 16) + (sum & 0xffff); /* add hi 16 to low 16 */ sum += (sum >> 16); /* add carry */ answer = ~sum; /* truncate to 16 bits */ return answer; } -static ping_node *ping_new(const char *host, gboolean ipv6) +static ping_node *ping_new(const char *host) { ping_node *node; crm_malloc0(node, sizeof(ping_node)); - if(ipv6) { + if(strstr(host, ":")) { node->type = AF_INET6; } else { node->type = AF_INET; } node->host = crm_strdup(host); return node; } static gboolean ping_open(ping_node *node) { int ret_ga; char *hostname; struct addrinfo *res; struct addrinfo hints; /* getaddrinfo */ bzero(&hints, sizeof(struct addrinfo)); hints.ai_flags = AI_CANONNAME; hints.ai_family = node->type; hints.ai_socktype = SOCK_RAW; if(node->type == AF_INET6) { hints.ai_protocol = IPPROTO_ICMPV6; } else { hints.ai_protocol = IPPROTO_ICMP; } ret_ga = getaddrinfo(node->host, NULL, &hints, &res); if (ret_ga) { crm_err("getaddrinfo: %s", gai_strerror(ret_ga)); return -1; } if (res->ai_canonname) hostname = res->ai_canonname; else hostname = node->host; crm_debug("Got address %s for %s", hostname, node->host); if (!res->ai_addr) { fprintf(stderr, "getaddrinfo failed"); exit(1); } memcpy(&(node->addr.raw), res->ai_addr, res->ai_addrlen); node->fd = socket(hints.ai_family, hints.ai_socktype, hints.ai_protocol); /* node->fd = socket(res->ai_family, res->ai_socktype, res->ai_protocol); */ if(node->fd < 0) { cl_perror("Can't open socket to %s", hostname); return FALSE; } if(node->type == AF_INET6) { int sockopt; inet_ntop(node->type, &node->addr.v6.sin6_addr, node->dest, sizeof(node->dest)); /* set recv buf for broadcast pings */ sockopt = 48 * 1024; setsockopt(node->fd, SOL_SOCKET, SO_RCVBUF, (char *) &sockopt, sizeof(sockopt)); } else { inet_ntop(node->type, &node->addr.v4.sin_addr, node->dest, sizeof(node->dest)); } crm_debug("Opened connection to %s", node->dest); return TRUE; } static gboolean ping_close(ping_node *node) { int tmp_fd = node->fd; node->fd = -1; if (tmp_fd >= 0) { if(close(tmp_fd) < 0) { cl_perror("Could not close ping socket"); } else { tmp_fd = -1; crm_debug("Closed connection to %s", node->dest); } } return (tmp_fd == -1); } #define MAXPACKETLEN 131072 #define ICMP6ECHOLEN 8 /* icmp echo header len excluding time */ #define ICMP6ECHOTMLEN 20 #define DEFDATALEN ICMP6ECHOTMLEN #define EXTRA 256 /* for AH and various other headers. weird. */ #define IP6LEN 40 static gboolean dump_v6_echo(ping_node *node, u_char *buf, int bytes, struct msghdr *hdr) { int fromlen; char dest[1024]; struct icmp6_hdr *icp; struct sockaddr *from; if (!hdr || !hdr->msg_name || hdr->msg_namelen != sizeof(struct sockaddr_in6) || ((struct sockaddr *)hdr->msg_name)->sa_family != AF_INET6) { crm_warn("Invalid echo peer"); return FALSE; } fromlen = hdr->msg_namelen; from = (struct sockaddr *)hdr->msg_name; getnameinfo(from, fromlen, dest, sizeof(dest), NULL, 0, NI_NUMERICHOST | NI_NUMERICSERV); if (bytes < (int)sizeof(struct icmp6_hdr)) { crm_warn("Invalid echo packet (too short: %d bytes) from %s", bytes, dest); return FALSE; } icp = (struct icmp6_hdr *)buf; if (icp->icmp6_type == ICMP6_ECHO_REPLY && ntohs(icp->icmp6_id) == ident) { u_int16_t seq = ntohs(icp->icmp6_seq); crm_debug("%d bytes from %s, icmp_seq=%u: %s", bytes, dest, seq, (char*)(buf + ICMP6ECHOLEN)); return TRUE; } crm_warn("Bad echo (%d): %d, code=%d, seq=%d, id=%d, check=%d", ICMP6_ECHO_REPLY, icp->icmp6_type, icp->icmp6_code, ntohs(icp->icmp6_seq), icp->icmp6_id, icp->icmp6_cksum); return FALSE; } static gboolean dump_v4_echo(ping_node *node, u_char *buf, int bytes, struct msghdr *hdr) { int iplen, fromlen; char dest[1024]; struct ip *ip; struct icmp *icp; struct sockaddr *from; if (hdr == NULL || !hdr->msg_name || hdr->msg_namelen != sizeof(struct sockaddr_in) || ((struct sockaddr *)hdr->msg_name)->sa_family != AF_INET) { crm_warn("Invalid echo peer"); return FALSE; } fromlen = hdr->msg_namelen; from = (struct sockaddr *)hdr->msg_name; getnameinfo(from, fromlen, dest, sizeof(dest), NULL, 0, NI_NUMERICHOST | NI_NUMERICSERV); ip = (struct ip*)buf; iplen = ip->ip_hl * 4; if (bytes < (iplen + sizeof(struct icmp))) { crm_warn("Invalid echo packet (too short: %d bytes) from %s", bytes, dest); return FALSE; } /* Check the IP header */ icp = (struct icmp*)(buf + iplen); if (icp->icmp_type == ICMP_ECHOREPLY && ntohs(icp->icmp_id) == ident) { crm_debug("%d bytes from %s, icmp_seq=%u: %s", bytes, dest, ntohs(icp->icmp_seq), icp->icmp_data); return TRUE; } crm_warn("Bad echo (%d): %d, code=%d, seq=%d, id=%d, check=%d", ICMP_ECHOREPLY, icp->icmp_type, icp->icmp_code, ntohs(icp->icmp_seq), icp->icmp_id, icp->icmp_cksum); return FALSE; } static int ping_read(ping_node *node, int *lenp) { int bytes; int fromlen; struct msghdr m; struct cmsghdr *cm; u_char buf[1024]; struct iovec iov[2]; int packlen; u_char *packet; packlen = DEFDATALEN + IP6LEN + ICMP6ECHOLEN + EXTRA; crm_malloc0(packet, packlen); if(node->type == AF_INET6) { fromlen = sizeof(struct sockaddr_in6); } else { fromlen = sizeof(struct sockaddr_in); } m.msg_name = (caddr_t)&node->addr; m.msg_namelen = fromlen; memset(&iov, 0, sizeof(iov)); iov[0].iov_base = (caddr_t)packet; iov[0].iov_len = packlen; m.msg_iov = iov; m.msg_iovlen = 1; cm = (struct cmsghdr *)buf; m.msg_control = (caddr_t)buf; m.msg_controllen = sizeof(buf); crm_debug_2("reading..."); bytes = recvmsg(node->fd, &m, 0); crm_debug_2("Got %d bytes", bytes); if (bytes > 0) { if(node->type == AF_INET6) { return dump_v6_echo(node, packet, bytes, &m); } else { return dump_v4_echo(node, packet, bytes, &m); } } else if(bytes < 0) { cl_perror("recvmsg failed"); } else { crm_err("Unexpected reply"); } return FALSE; } static int ping_write(ping_node *node, const char *data, size_t size) { struct iovec iov[2]; int rc, bytes, namelen; static int ntransmitted = 5; struct msghdr smsghdr; u_char outpack[MAXPACKETLEN]; node->iseq = ntransmitted++; if(node->type == AF_INET6) { struct icmp6_hdr *icp; namelen = sizeof(struct sockaddr_in6); bytes = ICMP6ECHOLEN + DEFDATALEN; icp = (struct icmp6_hdr *)outpack; memset(icp, 0, sizeof(*icp)); icp->icmp6_code = 0; icp->icmp6_cksum = 0; icp->icmp6_type = ICMP6_ECHO_REQUEST; icp->icmp6_id = htons(ident); icp->icmp6_seq = ntohs(node->iseq); memcpy(&outpack[ICMP6ECHOLEN], "beekhof-v6", 10); } else { struct icmp *icp; namelen = sizeof(struct sockaddr_in); bytes = sizeof(struct icmp) + 11; icp = (struct icmp *)outpack; memset(icp, 0, sizeof(*icp)); icp->icmp_code = 0; icp->icmp_cksum = 0; icp->icmp_type = ICMP_ECHO; icp->icmp_id = htons(ident); icp->icmp_seq = ntohs(node->iseq); memcpy(icp->icmp_data, "beekhof-v4", 10); icp->icmp_cksum = in_cksum((u_short *)icp, bytes); } memset(&smsghdr, 0, sizeof(smsghdr)); smsghdr.msg_name = (caddr_t)&(node->addr); smsghdr.msg_namelen = namelen; memset(&iov, 0, sizeof(iov)); iov[0].iov_base = (caddr_t)outpack; iov[0].iov_len = bytes; smsghdr.msg_iov = iov; smsghdr.msg_iovlen = 1; rc = sendmsg(node->fd, &smsghdr, 0); if (rc < 0 || rc != bytes) { cl_perror("Wrote %d of %d chars", rc, bytes); } else { crm_debug("Sent %d bytes to %s", rc, node->dest); } return(0); } static void usage(const char* cmd, int exit_status) { FILE* stream; stream = exit_status ? stderr : stdout; fprintf(stream, "usage: %s -n [-vdsS]\n", cmd); fprintf(stream, "\t-n \tthe attribute that changed\n"); fprintf(stream, "\t-v \tthe attribute's value\n"); fprintf(stream, "\t\tIf no value is supplied, the attribute value for this node will be deleted\n"); fprintf(stream, "\t-d \tthe time to wait (dampening) further changes occur\n"); fprintf(stream, "\t-s \tthe attribute set in which to place the value\n"); fprintf(stream, "\t\tMost people have no need to specify this\n"); fprintf(stream, "\t-S \tthe section in which to place the value\n"); fprintf(stream, "\t\tMost people have no need to specify this\n"); fflush(stream); exit(exit_status); } #define OPTARGS "V?6h:" int main(int argc, char ** argv) { ping_node *p = NULL; int argerr = 0; int flag; int len = 0; char *host = NULL; GListPtr ping_list = NULL; #ifdef HAVE_GETOPT_H int option_index = 0; static struct option long_options[] = { /* Top-level Options */ {"verbose", 0, 0, 'V'}, {"help", 0, 0, '?'}, {"host", 1, 0, 'h'}, {"use-ipv6", 0, 0, '6'}, {0, 0, 0, 0} }; #endif crm_log_init("pingd2", LOG_INFO, TRUE, TRUE, argc, argv); while (1) { #ifdef HAVE_GETOPT_H flag = getopt_long(argc, argv, OPTARGS, long_options, &option_index); #else flag = getopt(argc, argv, OPTARGS); #endif if (flag == -1) break; switch(flag) { case 'V': alter_debug(DEBUG_INC); break; case 'h': host = crm_strdup(optarg); - if(strstr(host, ":")) { - p = ping_new(host, TRUE); - } else { - p = ping_new(host, FALSE); - } + p = ping_new(host); ping_list = g_list_append(ping_list, p); break; case '?': /* Help message */ usage(crm_system_name, LSB_EXIT_OK); break; default: crm_debug("%c", flag); ++argerr; break; } } crm_debug_3("Option processing complete"); if (optind > argc) { ++argerr; } if (argc < 2) { ++argerr; } if (argerr) { usage(crm_system_name, LSB_EXIT_GENERIC); } ident = getpid() & 0xFFFF; while(1) { slist_iter( ping, ping_node, ping_list, num, int lpc = 0; int alive = 0; ping_open(ping); for(;lpc < 5; lpc++) { ping_write(ping, "test", 4); if(ping_read(ping, &len)) { alive++; } sleep(1); } if(alive) { crm_info("Node %s is alive (%d)", ping->host, alive); } ping_close(ping); ); sleep(5); } return 0; }