Adding upstream version 3.1.8.upstream/3.1.8upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 624 insertions, 0 deletions

diff --git a/exec/totemip.c b/exec/totemip.c
new file mode 100644
index 0000000..2bf7b08
--- /dev/null
+++ b/exec/totemip.c
@@ -0,0 +1,624 @@
+/*
+ * Copyright (c) 2005-2020 Red Hat, Inc.
+ *
+ * All rights reserved.
+ *
+ * Author: Patrick Caulfield (pcaulfie@redhat.com)
+ *
+ * This software licensed under BSD license, the text of which follows:
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * - Redistributions of source code must retain the above copyright notice,
+ *   this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright notice,
+ *   this list of conditions and the following disclaimer in the documentation
+ *   and/or other materials provided with the distribution.
+ * - Neither the name of the MontaVista Software, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived from this
+ *   software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+ * THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/* IPv4/6 abstraction */
+
+#include <config.h>
+
+#include <sys/ioctl.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <netdb.h>
+#include <net/if.h>
+#include <string.h>
+#include <stdio.h>
+#include <errno.h>
+#include <assert.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <ifaddrs.h>
+
+#include <corosync/totem/totemip.h>
+#include <corosync/logsys.h>
+#include <corosync/swab.h>
+
+#define LOCALHOST_IPV4 "127.0.0.1"
+#define LOCALHOST_IPV6 "::1"
+
+#define NETLINK_BUFSIZE 16384
+
+#ifdef SO_NOSIGPIPE
+void totemip_nosigpipe(int s)
+{
+	int on = 1;
+	setsockopt(s, SOL_SOCKET, SO_NOSIGPIPE, (void *)&on, sizeof(on));
+}
+#endif
+
+/* Compare two addresses */
+int totemip_equal(const struct totem_ip_address *addr1,
+		  const struct totem_ip_address *addr2)
+{
+	int addrlen = 0;
+
+	if (addr1->family != addr2->family)
+		return 0;
+
+	if (addr1->family == AF_INET) {
+		addrlen = sizeof(struct in_addr);
+	}
+	if (addr1->family == AF_INET6) {
+		addrlen = sizeof(struct in6_addr);
+	}
+	assert(addrlen);
+
+	if (memcmp(addr1->addr, addr2->addr, addrlen) == 0)
+		return 1;
+	else
+		return 0;
+
+}
+
+int totemip_sa_equal(const struct totem_ip_address *totem_ip,
+	const struct sockaddr *sa)
+{
+	int res;
+
+	res = 0;
+
+	if (totem_ip->family != sa->sa_family) {
+		return (res);
+	}
+
+	switch (totem_ip->family) {
+	case AF_INET:
+		res = (memcmp(totem_ip->addr,
+		    &((const struct sockaddr_in *)sa)->sin_addr, sizeof(struct in_addr)) == 0);
+		break;
+	case AF_INET6:
+		res =  (memcmp(totem_ip->addr,
+		    &((const struct sockaddr_in6 *)sa)->sin6_addr, sizeof(struct in6_addr)) == 0);
+		break;
+	default:
+		assert(0);
+	}
+
+	return (res);
+}
+
+/* Copy a totem_ip_address */
+void totemip_copy(struct totem_ip_address *addr1,
+		  const struct totem_ip_address *addr2)
+{
+	memcpy(addr1, addr2, sizeof(struct totem_ip_address));
+}
+
+/*
+ * Multicast address range is 224.0.0.0 to 239.255.255.255 this
+ * translates to the first 4 bits == 1110 (0xE).
+ * http://en.wikipedia.org/wiki/Multicast_address
+ */
+int32_t totemip_is_mcast(struct totem_ip_address *ip_addr)
+{
+	uint32_t addr = 0;
+
+	memcpy (&addr, ip_addr->addr, sizeof (uint32_t));
+
+	if (ip_addr->family == AF_INET) {
+		addr = ntohl(addr);
+		if ((addr >> 28) != 0xE) {
+			return -1;
+		}
+	}
+	return 0;
+}
+
+/* For sorting etc. params are void * for qsort's benefit */
+int totemip_compare(const void *a, const void *b)
+{
+	int i;
+	const struct totem_ip_address *totemip_a = (const struct totem_ip_address *)a;
+	const struct totem_ip_address *totemip_b = (const struct totem_ip_address *)b;
+	struct in_addr ipv4_a1;
+	struct in_addr ipv4_a2;
+	struct in6_addr ipv6_a1;
+	struct in6_addr ipv6_a2;
+	unsigned short family;
+
+	/*
+	 * Use memcpy to align since totem_ip_address is unaligned on various archs
+	 */
+	memcpy (&family, &totemip_a->family, sizeof (unsigned short));
+
+	if (family == AF_INET) {
+		memcpy (&ipv4_a1, totemip_a->addr, sizeof (struct in_addr));
+		memcpy (&ipv4_a2, totemip_b->addr, sizeof (struct in_addr));
+		if (ipv4_a1.s_addr == ipv4_a2.s_addr) {
+			return (0);
+		}
+		if (htonl(ipv4_a1.s_addr) < htonl(ipv4_a2.s_addr)) {
+			return -1;
+		} else {
+			return +1;
+		}
+	} else
+	if (family == AF_INET6) {
+		/*
+		 * We can only compare 8 bits at time for portability reasons
+		 */
+		memcpy (&ipv6_a1, totemip_a->addr, sizeof (struct in6_addr));
+		memcpy (&ipv6_a2, totemip_b->addr, sizeof (struct in6_addr));
+		for (i = 0; i < 16; i++) {
+			int res = ipv6_a1.s6_addr[i] -
+				ipv6_a2.s6_addr[i];
+			if (res) {
+				return res;
+			}
+		}
+		return 0;
+	} else {
+		/*
+		 * Family not set, should be!
+	 	 */
+		assert (0);
+	}
+	return 0;
+}
+
+/* Build a localhost totem_ip_address */
+int totemip_localhost(int family, struct totem_ip_address *localhost)
+{
+	const char *addr_text;
+
+	memset (localhost, 0, sizeof (struct totem_ip_address));
+
+	if (family == AF_INET) {
+		addr_text = LOCALHOST_IPV4;
+		if (inet_pton(family, addr_text, (char *)&localhost->nodeid) <= 0) {
+			return -1;
+		}
+	} else {
+		addr_text = LOCALHOST_IPV6;
+	}
+
+	if (inet_pton(family, addr_text, (char *)localhost->addr) <= 0)
+		return -1;
+
+	localhost->family = family;
+
+	return 0;
+}
+
+int totemip_localhost_check(const struct totem_ip_address *addr)
+{
+	struct totem_ip_address localhost;
+
+	if (totemip_localhost(addr->family, &localhost))
+		return 0;
+	return totemip_equal(addr, &localhost);
+}
+
+const char *totemip_sa_print(const struct sockaddr *sa)
+{
+	static char buf[INET6_ADDRSTRLEN];
+
+	buf[0] = 0;
+
+	switch (sa->sa_family) {
+	case AF_INET:
+		inet_ntop(sa->sa_family, &((struct sockaddr_in *)(sa))->sin_addr, buf,
+		    INET6_ADDRSTRLEN);
+		break;
+	case AF_INET6:
+		inet_ntop(sa->sa_family, &((struct sockaddr_in6 *)(sa))->sin6_addr, buf,
+		    INET6_ADDRSTRLEN);
+		break;
+	default:
+		return (NULL);
+	}
+
+	return (buf);
+}
+
+const char *totemip_print(const struct totem_ip_address *addr)
+{
+	static char buf[INET6_ADDRSTRLEN];
+
+	return (inet_ntop(addr->family, addr->addr, buf, sizeof(buf)));
+}
+
+/* Make a totem_ip_address into a usable sockaddr_storage */
+int totemip_totemip_to_sockaddr_convert(struct totem_ip_address *ip_addr,
+					uint16_t port, struct sockaddr_storage *saddr, int *addrlen)
+{
+	int ret = -1;
+
+	if (ip_addr->family == AF_INET) {
+		struct sockaddr_in *sin = (struct sockaddr_in *)saddr;
+
+		memset(sin, 0, sizeof(struct sockaddr_in));
+#ifdef HAVE_SOCK_SIN_LEN
+		sin->sin_len = sizeof(struct sockaddr_in);
+#endif
+		sin->sin_family = ip_addr->family;
+		sin->sin_port = ntohs(port);
+		memcpy(&sin->sin_addr, ip_addr->addr, sizeof(struct in_addr));
+		*addrlen = sizeof(struct sockaddr_in);
+		ret = 0;
+	}
+
+	if (ip_addr->family == AF_INET6) {
+		struct sockaddr_in6 *sin = (struct sockaddr_in6 *)saddr;
+
+		memset(sin, 0, sizeof(struct sockaddr_in6));
+#ifdef HAVE_SOCK_SIN6_LEN
+		sin->sin6_len = sizeof(struct sockaddr_in6);
+#endif
+		sin->sin6_family = ip_addr->family;
+		sin->sin6_port = ntohs(port);
+		sin->sin6_scope_id = 2;
+		memcpy(&sin->sin6_addr, ip_addr->addr, sizeof(struct in6_addr));
+
+		*addrlen = sizeof(struct sockaddr_in6);
+		ret = 0;
+	}
+
+	return ret;
+}
+
+/*
+ * Converts an address string string into a totem_ip_address. ip_version enum
+ * defines order.
+ */
+int totemip_parse(struct totem_ip_address *totemip, const char *addr,
+    enum totem_ip_version_enum ip_version)
+{
+	struct addrinfo *ainfo;
+	struct addrinfo *ainfo_iter;
+	struct addrinfo *ainfo_ipv4;
+	struct addrinfo *ainfo_ipv6;
+	struct addrinfo *ainfo_final;
+	struct addrinfo ahints;
+	struct sockaddr_in *sa;
+	struct sockaddr_in6 *sa6;
+	int ret;
+	int debug_ip_family;
+	int ai_family;
+
+	memset(&ahints, 0, sizeof(ahints));
+	ahints.ai_socktype = SOCK_DGRAM;
+	ahints.ai_protocol = IPPROTO_UDP;
+
+	ai_family = AF_UNSPEC;
+	debug_ip_family = 0;
+
+	switch (ip_version) {
+	case TOTEM_IP_VERSION_4:
+		ai_family = AF_INET;
+		debug_ip_family = 4;
+		break;
+	case TOTEM_IP_VERSION_6:
+		ai_family = AF_INET6;
+		debug_ip_family = 6;
+		break;
+	case TOTEM_IP_VERSION_6_4:
+	case TOTEM_IP_VERSION_4_6:
+		/*
+		 * ai_family and debug_ip_family are already set correctly
+		 */
+		break;
+	}
+
+	ahints.ai_family = ai_family;
+
+	ret = getaddrinfo(addr, NULL, &ahints, &ainfo);
+
+	if (ret == 0 && ai_family == AF_UNSPEC) {
+		ainfo_ipv4 = ainfo_ipv6 = NULL;
+
+		/*
+		 * Walk thru results and store first AF_INET and AF_INET6
+		 */
+		for (ainfo_iter = ainfo; ainfo_iter != NULL; ainfo_iter = ainfo_iter->ai_next) {
+			if (ainfo_iter->ai_family == AF_INET && ainfo_ipv4 == NULL) {
+				ainfo_ipv4 = ainfo_iter;
+			}
+
+			if (ainfo_iter->ai_family == AF_INET6 && ainfo_ipv6 == NULL) {
+				ainfo_ipv6 = ainfo_iter;
+			}
+		}
+
+		if (ip_version == TOTEM_IP_VERSION_6_4) {
+			if (ainfo_ipv6 != NULL) {
+				ainfo_final = ainfo_ipv6;
+			} else {
+				ainfo_final = ainfo_ipv4;
+			}
+		} else {
+			if (ainfo_ipv4 != NULL) {
+				ainfo_final = ainfo_ipv4;
+			} else {
+				ainfo_final = ainfo_ipv6;
+			}
+		}
+	} else if (ret == 0) {
+		ainfo_final = ainfo;
+	} else {
+		ainfo_final = NULL;
+	}
+
+	if (ainfo_final == NULL) {
+		if (ret == 0) {
+			freeaddrinfo(ainfo);
+		}
+
+		if (debug_ip_family == 0) {
+			log_printf(LOGSYS_LEVEL_DEBUG, "totemip_parse: IP address of %s not resolvable",
+			    addr);
+		} else {
+			log_printf(LOGSYS_LEVEL_DEBUG, "totemip_parse: IPv%u address of %s not resolvable",
+			    debug_ip_family, addr);
+		}
+
+		return (-1);
+	}
+
+	totemip->family = ainfo_final->ai_family;
+	if (ainfo_final->ai_family == AF_INET) {
+		sa = (struct sockaddr_in *)ainfo_final->ai_addr;
+		memcpy(totemip->addr, &sa->sin_addr, sizeof(struct in_addr));
+		debug_ip_family = 4;
+	} else {
+		sa6 = (struct sockaddr_in6 *)ainfo_final->ai_addr;
+		memcpy(totemip->addr, &sa6->sin6_addr, sizeof(struct in6_addr));
+		debug_ip_family = 6;
+	}
+
+	log_printf(LOGSYS_LEVEL_DEBUG, "totemip_parse: IPv%u address of %s resolved as %s",
+		    debug_ip_family, addr, totemip_print(totemip));
+
+	freeaddrinfo(ainfo);
+
+	return (0);
+}
+
+/* Make a sockaddr_* into a totem_ip_address */
+int totemip_sockaddr_to_totemip_convert(const struct sockaddr_storage *saddr,
+					struct totem_ip_address *ip_addr)
+{
+	int ret = -1;
+
+	ip_addr->family = saddr->ss_family;
+	ip_addr->nodeid = 0;
+
+	if (saddr->ss_family == AF_INET) {
+		const struct sockaddr_in *sin = (const struct sockaddr_in *)saddr;
+
+		memcpy(ip_addr->addr, &sin->sin_addr, sizeof(struct in_addr));
+		ret = 0;
+	}
+
+	if (saddr->ss_family == AF_INET6) {
+		const struct sockaddr_in6 *sin
+		  = (const struct sockaddr_in6 *)saddr;
+
+		memcpy(ip_addr->addr, &sin->sin6_addr, sizeof(struct in6_addr));
+
+		ret = 0;
+	}
+	return ret;
+}
+
+int totemip_getifaddrs(struct qb_list_head *addrs)
+{
+	struct ifaddrs *ifap, *ifa;
+	struct totem_ip_if_address *if_addr;
+
+	if (getifaddrs(&ifap) != 0)
+		return (-1);
+
+	qb_list_init(addrs);
+
+	for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
+		if (ifa->ifa_addr == NULL || ifa->ifa_netmask == NULL)
+			continue ;
+
+		if ((ifa->ifa_addr->sa_family != AF_INET && ifa->ifa_addr->sa_family != AF_INET6) ||
+		    (ifa->ifa_netmask->sa_family != AF_INET && ifa->ifa_netmask->sa_family != AF_INET6 &&
+		     ifa->ifa_netmask->sa_family != 0))
+			continue ;
+
+		if (ifa->ifa_netmask->sa_family == 0) {
+			ifa->ifa_netmask->sa_family = ifa->ifa_addr->sa_family;
+		}
+
+		if_addr = malloc(sizeof(struct totem_ip_if_address));
+		if (if_addr == NULL) {
+			goto error_free_ifaddrs;
+		}
+
+		qb_list_init(&if_addr->list);
+
+		memset(if_addr, 0, sizeof(struct totem_ip_if_address));
+
+		if_addr->interface_up = ifa->ifa_flags & IFF_UP;
+		if_addr->interface_num = if_nametoindex(ifa->ifa_name);
+		if_addr->name = strdup(ifa->ifa_name);
+		if (if_addr->name == NULL) {
+			goto error_free_addr;
+		}
+
+		if (totemip_sockaddr_to_totemip_convert((const struct sockaddr_storage *)ifa->ifa_addr,
+		    &if_addr->ip_addr) == -1) {
+			goto error_free_addr_name;
+		}
+
+		if (totemip_sockaddr_to_totemip_convert((const struct sockaddr_storage *)ifa->ifa_netmask,
+		    &if_addr->mask_addr) == -1) {
+			goto error_free_addr_name;
+		}
+
+		qb_list_add_tail(&if_addr->list, addrs);
+	}
+
+	freeifaddrs(ifap);
+
+	return (0);
+
+error_free_addr_name:
+	free(if_addr->name);
+
+error_free_addr:
+	free(if_addr);
+
+error_free_ifaddrs:
+	totemip_freeifaddrs(addrs);
+	freeifaddrs(ifap);
+	return (-1);
+}
+
+void totemip_freeifaddrs(struct qb_list_head *addrs)
+{
+	struct totem_ip_if_address *if_addr;
+	struct qb_list_head *list, *tmp_iter;
+
+	qb_list_for_each_safe(list, tmp_iter, addrs) {
+		if_addr = qb_list_entry(list, struct totem_ip_if_address, list);
+
+		free(if_addr->name);
+		qb_list_del(&if_addr->list);
+	        free(if_addr);
+	}
+	qb_list_init(addrs);
+}
+
+int totemip_iface_check(struct totem_ip_address *bindnet,
+			struct totem_ip_address *boundto,
+			int *interface_up,
+			int *interface_num,
+			int mask_high_bit)
+{
+	struct qb_list_head addrs;
+	struct qb_list_head *list;
+	struct totem_ip_if_address *if_addr;
+	struct totem_ip_address bn_netaddr, if_netaddr;
+	socklen_t addr_len;
+	socklen_t si;
+	int res = -1;
+	int exact_match_found = 0;
+	int net_match_found = 0;
+
+	*interface_up = 0;
+	*interface_num = 0;
+
+	if (totemip_getifaddrs(&addrs) == -1) {
+		return (-1);
+	}
+
+	qb_list_for_each(list, &addrs) {
+		if_addr = qb_list_entry(list, struct totem_ip_if_address, list);
+
+		if (bindnet->family != if_addr->ip_addr.family)
+			continue ;
+
+		addr_len = 0;
+
+		switch (bindnet->family) {
+		case AF_INET:
+			addr_len = sizeof(struct in_addr);
+			break;
+		case AF_INET6:
+			addr_len = sizeof(struct in6_addr);
+			break;
+		}
+
+		if (addr_len == 0)
+			continue ;
+
+		totemip_copy(&bn_netaddr, bindnet);
+		totemip_copy(&if_netaddr, &if_addr->ip_addr);
+
+		if (totemip_equal(&bn_netaddr, &if_netaddr)) {
+			exact_match_found = 1;
+		}
+
+		for (si = 0; si < addr_len; si++) {
+			bn_netaddr.addr[si] = bn_netaddr.addr[si] & if_addr->mask_addr.addr[si];
+			if_netaddr.addr[si] = if_netaddr.addr[si] & if_addr->mask_addr.addr[si];
+		}
+
+		if (exact_match_found || (!net_match_found && totemip_equal(&bn_netaddr, &if_netaddr))) {
+			totemip_copy(boundto, &if_addr->ip_addr);
+			boundto->nodeid = bindnet->nodeid;
+			*interface_up = if_addr->interface_up;
+			*interface_num = if_addr->interface_num;
+
+			net_match_found = 1;
+			res = 0;
+
+			if (exact_match_found) {
+				goto finished;
+			}
+		}
+	}
+
+finished:
+	totemip_freeifaddrs(&addrs);
+	return (res);
+}
+
+#define TOTEMIP_UDP_HEADER_SIZE		8
+#define TOTEMIP_IPV4_HEADER_SIZE	20
+#define TOTEMIP_IPV6_HEADER_SIZE	40
+
+size_t totemip_udpip_header_size(int family)
+{
+	size_t header_size;
+
+	header_size = 0;
+
+	switch (family) {
+	case AF_INET:
+		header_size = TOTEMIP_UDP_HEADER_SIZE + TOTEMIP_IPV4_HEADER_SIZE;
+		break;
+	case AF_INET6:
+		header_size = TOTEMIP_UDP_HEADER_SIZE + TOTEMIP_IPV6_HEADER_SIZE;
+		break;
+	}
+
+	return (header_size);
+}