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-rw-r--r--libavahi-core/socket.c511
1 files changed, 0 insertions, 511 deletions
diff --git a/libavahi-core/socket.c b/libavahi-core/socket.c
deleted file mode 100644
index e59c78a..0000000
--- a/libavahi-core/socket.c
+++ /dev/null
@@ -1,511 +0,0 @@
-/* $Id$ */
-
-/***
- This file is part of avahi.
-
- avahi is free software; you can redistribute it and/or modify it
- under the terms of the GNU Lesser General Public License as
- published by the Free Software Foundation; either version 2.1 of the
- License, or (at your option) any later version.
-
- avahi 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 Lesser General
- Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public
- License along with avahi; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
- USA.
-***/
-
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-
-#include <inttypes.h>
-#include <errno.h>
-#include <string.h>
-#include <stdio.h>
-#include <sys/socket.h>
-#include <netinet/in.h>
-#include <arpa/inet.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <sys/time.h>
-#include <net/if.h>
-#include <sys/ioctl.h>
-
-#include "dns.h"
-#include "util.h"
-#include "socket.h"
-
-static void mdns_mcast_group_ipv4(struct sockaddr_in *ret_sa) {
- g_assert(ret_sa);
-
- memset(ret_sa, 0, sizeof(struct sockaddr_in));
-
- ret_sa->sin_family = AF_INET;
- ret_sa->sin_port = htons(AVAHI_MDNS_PORT);
- inet_pton(AF_INET, "224.0.0.251", &ret_sa->sin_addr);
-}
-
-static void mdns_mcast_group_ipv6(struct sockaddr_in6 *ret_sa) {
-
- g_assert(ret_sa);
-
- memset(ret_sa, 0, sizeof(struct sockaddr_in6));
-
- ret_sa->sin6_family = AF_INET6;
- ret_sa->sin6_port = htons(AVAHI_MDNS_PORT);
- inet_pton(AF_INET6, "ff02::fb", &ret_sa->sin6_addr);
-}
-
-int avahi_mdns_mcast_join_ipv4 (int index, int fd)
-{
- struct ip_mreqn mreq;
- struct sockaddr_in sa;
-
- mdns_mcast_group_ipv4 (&sa);
-
- memset(&mreq, 0, sizeof(mreq));
- mreq.imr_multiaddr = sa.sin_addr;
- mreq.imr_ifindex = index;
-
- if (setsockopt(fd, SOL_IP, IP_ADD_MEMBERSHIP, &mreq, sizeof(mreq)) < 0) {
- g_warning("IP_ADD_MEMBERSHIP failed: %s\n", strerror(errno));
- return -1;
- }
-
- return 0;
-}
-
-int avahi_mdns_mcast_join_ipv6 (int index, int fd)
-{
- struct ipv6_mreq mreq6;
- struct sockaddr_in6 sa6;
-
- mdns_mcast_group_ipv6 (&sa6);
-
- memset(&mreq6, 0, sizeof(mreq6));
- mreq6.ipv6mr_multiaddr = sa6.sin6_addr;
- mreq6.ipv6mr_interface = index;
-
- if (setsockopt(fd, SOL_IPV6, IPV6_ADD_MEMBERSHIP, &mreq6, sizeof(mreq6)) < 0) {
- g_warning("IPV6_ADD_MEMBERSHIP failed: %s\n", strerror(errno));
- return -1;
- }
-
- return 0;
-}
-
-int avahi_mdns_mcast_leave_ipv4 (int index, int fd)
-{
- struct ip_mreqn mreq;
- struct sockaddr_in sa;
-
- mdns_mcast_group_ipv4 (&sa);
-
- memset(&mreq, 0, sizeof(mreq));
- mreq.imr_multiaddr = sa.sin_addr;
- mreq.imr_ifindex = index;
-
- if (setsockopt(fd, SOL_IP, IP_DROP_MEMBERSHIP, &mreq, sizeof(mreq)) < 0) {
- g_warning("IP_DROP_MEMBERSHIP failed: %s\n", strerror(errno));
- return -1;
- }
-
- return 0;
-}
-
-int avahi_mdns_mcast_leave_ipv6 (int index, int fd)
-{
- struct ipv6_mreq mreq6;
- struct sockaddr_in6 sa6;
-
- mdns_mcast_group_ipv6 (&sa6);
-
- memset(&mreq6, 0, sizeof(mreq6));
- mreq6.ipv6mr_multiaddr = sa6.sin6_addr;
- mreq6.ipv6mr_interface = index;
-
- if (setsockopt(fd, SOL_IPV6, IPV6_DROP_MEMBERSHIP, &mreq6, sizeof(mreq6)) < 0) {
- g_warning("IPV6_DROP_MEMBERSHIP failed: %s\n", strerror(errno));
- return -1;
- }
-
- return 0;
-}
-
-gint avahi_open_socket_ipv4(void) {
- struct sockaddr_in local;
- int fd = -1, ttl, yes;
-
- if ((fd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
- g_warning("socket() failed: %s\n", strerror(errno));
- goto fail;
- }
-
- ttl = 255;
- if (setsockopt(fd, SOL_IP, IP_MULTICAST_TTL, &ttl, sizeof(ttl)) < 0) {
- g_warning("IP_MULTICAST_TTL failed: %s\n", strerror(errno));
- goto fail;
- }
-
- ttl = 255;
- if (setsockopt(fd, SOL_IP, IP_TTL, &ttl, sizeof(ttl)) < 0) {
- g_warning("IP_TTL failed: %s\n", strerror(errno));
- goto fail;
- }
-
- yes = 1;
- if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &yes, sizeof(yes)) < 0) {
- g_warning("SO_REUSEADDR failed: %s\n", strerror(errno));
- goto fail;
- }
-
- yes = 1;
- if (setsockopt(fd, SOL_IP, IP_MULTICAST_LOOP, &yes, sizeof(yes)) < 0) {
- g_warning("IP_MULTICAST_LOOP failed: %s\n", strerror(errno));
- goto fail;
- }
-
-
- memset(&local, 0, sizeof(local));
- local.sin_family = AF_INET;
- local.sin_port = htons(AVAHI_MDNS_PORT);
-
- if (bind(fd, (struct sockaddr*) &local, sizeof(local)) < 0) {
- g_warning("bind() failed: %s\n", strerror(errno));
- goto fail;
- }
-
- yes = 1;
- if (setsockopt(fd, SOL_IP, IP_RECVTTL, &yes, sizeof(yes)) < 0) {
- g_warning("IP_RECVTTL failed: %s\n", strerror(errno));
- goto fail;
- }
-
- yes = 1;
- if (setsockopt(fd, SOL_IP, IP_PKTINFO, &yes, sizeof(yes)) < 0) {
- g_warning("IP_PKTINFO failed: %s\n", strerror(errno));
- goto fail;
- }
-
- if (avahi_set_cloexec(fd) < 0) {
- g_warning("FD_CLOEXEC failed: %s\n", strerror(errno));
- goto fail;
- }
-
- if (avahi_set_nonblock(fd) < 0) {
- g_warning("O_NONBLOCK failed: %s\n", strerror(errno));
- goto fail;
- }
-
- return fd;
-
-fail:
- if (fd >= 0)
- close(fd);
-
- return -1;
-}
-
-gint avahi_open_socket_ipv6(void) {
- struct sockaddr_in6 sa, local;
- int fd = -1, ttl, yes;
-
- mdns_mcast_group_ipv6(&sa);
-
- if ((fd = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
- g_warning("socket() failed: %s\n", strerror(errno));
- goto fail;
- }
-
- ttl = 255;
- if (setsockopt(fd, SOL_IPV6, IPV6_MULTICAST_HOPS, &ttl, sizeof(ttl)) < 0) {
- g_warning("IPV6_MULTICAST_HOPS failed: %s\n", strerror(errno));
- goto fail;
- }
-
- ttl = 255;
- if (setsockopt(fd, SOL_IPV6, IPV6_UNICAST_HOPS, &ttl, sizeof(ttl)) < 0) {
- g_warning("IPV6_UNICAST_HOPS failed: %s\n", strerror(errno));
- goto fail;
- }
-
- yes = 1;
- if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &yes, sizeof(yes)) < 0) {
- g_warning("SO_REUSEADDR failed: %s\n", strerror(errno));
- goto fail;
- }
-
- yes = 1;
- if (setsockopt(fd, SOL_IPV6, IPV6_V6ONLY, &yes, sizeof(yes)) < 0) {
- g_warning("IPV6_V6ONLY failed: %s\n", strerror(errno));
- goto fail;
- }
-
- yes = 1;
- if (setsockopt(fd, SOL_IPV6, IPV6_MULTICAST_LOOP, &yes, sizeof(yes)) < 0) {
- g_warning("IPV6_MULTICAST_LOOP failed: %s\n", strerror(errno));
- goto fail;
- }
-
- memset(&local, 0, sizeof(local));
- local.sin6_family = AF_INET6;
- local.sin6_port = htons(AVAHI_MDNS_PORT);
-
- if (bind(fd, (struct sockaddr*) &local, sizeof(local)) < 0) {
- g_warning("bind() failed: %s\n", strerror(errno));
- goto fail;
- }
-
- yes = 1;
- if (setsockopt(fd, SOL_IPV6, IPV6_HOPLIMIT, &yes, sizeof(yes)) < 0) {
- g_warning("IPV6_HOPLIMIT failed: %s\n", strerror(errno));
- goto fail;
- }
-
- yes = 1;
- if (setsockopt(fd, SOL_IPV6, IPV6_PKTINFO, &yes, sizeof(yes)) < 0) {
- g_warning("IPV6_PKTINFO failed: %s\n", strerror(errno));
- goto fail;
- }
-
- if (avahi_set_cloexec(fd) < 0) {
- g_warning("FD_CLOEXEC failed: %s\n", strerror(errno));
- goto fail;
- }
-
- if (avahi_set_nonblock(fd) < 0) {
- g_warning("O_NONBLOCK failed: %s\n", strerror(errno));
- goto fail;
- }
-
- return fd;
-
-fail:
- if (fd >= 0)
- close(fd);
-
- return -1;
-}
-
-static gint sendmsg_loop(gint fd, struct msghdr *msg, gint flags) {
- g_assert(fd >= 0);
- g_assert(msg);
-
- for (;;) {
-
- if (sendmsg(fd, msg, flags) >= 0)
- break;
-
- if (errno != EAGAIN) {
- g_message("sendmsg() failed: %s\n", strerror(errno));
- return -1;
- }
-
- if (avahi_wait_for_write(fd) < 0)
- return -1;
- }
-
- return 0;
-}
-
-gint avahi_send_dns_packet_ipv4(gint fd, gint interface, AvahiDnsPacket *p) {
- struct sockaddr_in sa;
- struct msghdr msg;
- struct iovec io;
- struct cmsghdr *cmsg;
- struct in_pktinfo *pkti;
- uint8_t cmsg_data[sizeof(struct cmsghdr) + sizeof(struct in_pktinfo)];
-
- g_assert(fd >= 0);
- g_assert(p);
- g_assert(avahi_dns_packet_check_valid(p) >= 0);
-
- mdns_mcast_group_ipv4(&sa);
-
- memset(&io, 0, sizeof(io));
- io.iov_base = AVAHI_DNS_PACKET_DATA(p);
- io.iov_len = p->size;
-
- memset(cmsg_data, 0, sizeof(cmsg_data));
- cmsg = (struct cmsghdr*) cmsg_data;
- cmsg->cmsg_len = sizeof(cmsg_data);
- cmsg->cmsg_level = IPPROTO_IP;
- cmsg->cmsg_type = IP_PKTINFO;
-
- pkti = (struct in_pktinfo*) (cmsg_data + sizeof(struct cmsghdr));
- pkti->ipi_ifindex = interface;
-
- memset(&msg, 0, sizeof(msg));
- msg.msg_name = &sa;
- msg.msg_namelen = sizeof(sa);
- msg.msg_iov = &io;
- msg.msg_iovlen = 1;
- msg.msg_control = cmsg_data;
- msg.msg_controllen = sizeof(cmsg_data);
- msg.msg_flags = 0;
-
- return sendmsg_loop(fd, &msg, MSG_DONTROUTE);
-}
-
-gint avahi_send_dns_packet_ipv6(gint fd, gint interface, AvahiDnsPacket *p) {
- struct sockaddr_in6 sa;
- struct msghdr msg;
- struct iovec io;
- struct cmsghdr *cmsg;
- struct in6_pktinfo *pkti;
- uint8_t cmsg_data[sizeof(struct cmsghdr) + sizeof(struct in6_pktinfo)];
-
- g_assert(fd >= 0);
- g_assert(p);
- g_assert(avahi_dns_packet_check_valid(p) >= 0);
-
- mdns_mcast_group_ipv6(&sa);
-
- memset(&io, 0, sizeof(io));
- io.iov_base = AVAHI_DNS_PACKET_DATA(p);
- io.iov_len = p->size;
-
- memset(cmsg_data, 0, sizeof(cmsg_data));
- cmsg = (struct cmsghdr*) cmsg_data;
- cmsg->cmsg_len = sizeof(cmsg_data);
- cmsg->cmsg_level = IPPROTO_IPV6;
- cmsg->cmsg_type = IPV6_PKTINFO;
-
- pkti = (struct in6_pktinfo*) (cmsg_data + sizeof(struct cmsghdr));
- pkti->ipi6_ifindex = interface;
-
- memset(&msg, 0, sizeof(msg));
- msg.msg_name = &sa;
- msg.msg_namelen = sizeof(sa);
- msg.msg_iov = &io;
- msg.msg_iovlen = 1;
- msg.msg_control = cmsg_data;
- msg.msg_controllen = sizeof(cmsg_data);
- msg.msg_flags = 0;
-
- return sendmsg_loop(fd, &msg, MSG_DONTROUTE);
-}
-
-AvahiDnsPacket* avahi_recv_dns_packet_ipv4(gint fd, struct sockaddr_in *ret_sa, gint *ret_iface, guint8* ret_ttl) {
- AvahiDnsPacket *p= NULL;
- struct msghdr msg;
- struct iovec io;
- uint8_t aux[64];
- ssize_t l;
- struct cmsghdr *cmsg;
- gboolean found_ttl = FALSE, found_iface = FALSE;
-
- g_assert(fd >= 0);
- g_assert(ret_sa);
- g_assert(ret_iface);
- g_assert(ret_ttl);
-
- p = avahi_dns_packet_new(0);
-
- io.iov_base = AVAHI_DNS_PACKET_DATA(p);
- io.iov_len = p->max_size;
-
- memset(&msg, 0, sizeof(msg));
- msg.msg_name = ret_sa;
- msg.msg_namelen = sizeof(struct sockaddr_in);
- msg.msg_iov = &io;
- msg.msg_iovlen = 1;
- msg.msg_control = aux;
- msg.msg_controllen = sizeof(aux);
- msg.msg_flags = 0;
-
- if ((l = recvmsg(fd, &msg, 0)) < 0)
- goto fail;
-
- p->size = (size_t) l;
-
- *ret_ttl = 0;
-
- for (cmsg = CMSG_FIRSTHDR(&msg); cmsg != NULL; cmsg = CMSG_NXTHDR(&msg,cmsg)) {
- if (cmsg->cmsg_level == SOL_IP && cmsg->cmsg_type == IP_TTL) {
- *ret_ttl = *(uint8_t *) CMSG_DATA(cmsg);
- found_ttl = TRUE;
- }
-
- if (cmsg->cmsg_level == SOL_IP && cmsg->cmsg_type == IP_PKTINFO) {
- *ret_iface = ((struct in_pktinfo*) CMSG_DATA(cmsg))->ipi_ifindex;
- found_iface = TRUE;
- }
- }
-
- g_assert(found_iface);
- g_assert(found_ttl);
-
- return p;
-
-fail:
- if (p)
- avahi_dns_packet_free(p);
-
- return NULL;
-}
-
-AvahiDnsPacket* avahi_recv_dns_packet_ipv6(gint fd, struct sockaddr_in6 *ret_sa, gint *ret_iface, guint8* ret_ttl) {
- AvahiDnsPacket *p = NULL;
- struct msghdr msg;
- struct iovec io;
- uint8_t aux[64];
- ssize_t l;
- struct cmsghdr *cmsg;
- gboolean found_ttl = FALSE, found_iface = FALSE;
-
- g_assert(fd >= 0);
- g_assert(ret_sa);
- g_assert(ret_iface);
- g_assert(ret_ttl);
-
- p = avahi_dns_packet_new(0);
-
- io.iov_base = AVAHI_DNS_PACKET_DATA(p);
- io.iov_len = p->max_size;
-
- memset(&msg, 0, sizeof(msg));
- msg.msg_name = ret_sa;
- msg.msg_namelen = sizeof(struct sockaddr_in6);
- msg.msg_iov = &io;
- msg.msg_iovlen = 1;
- msg.msg_control = aux;
- msg.msg_controllen = sizeof(aux);
- msg.msg_flags = 0;
-
- if ((l = recvmsg(fd, &msg, 0)) < 0)
- goto fail;
-
- p->size = (size_t) l;
-
- *ret_ttl = 0;
-
- for (cmsg = CMSG_FIRSTHDR(&msg); cmsg != NULL; cmsg = CMSG_NXTHDR(&msg, cmsg)) {
- if (cmsg->cmsg_level == SOL_IPV6 && cmsg->cmsg_type == IPV6_HOPLIMIT) {
- *ret_ttl = *(uint8_t *) CMSG_DATA(cmsg);
- found_ttl = TRUE;
- }
-
- if (cmsg->cmsg_level == SOL_IPV6 && cmsg->cmsg_type == IPV6_PKTINFO) {
- *ret_iface = ((struct in6_pktinfo*) CMSG_DATA(cmsg))->ipi6_ifindex;
- found_iface = TRUE;
- }
- }
-
- g_assert(found_iface);
- g_assert(found_ttl);
-
- return p;
-
-fail:
- if (p)
- avahi_dns_packet_free(p);
-
- return NULL;
-}
-
generated by cgit (git 2.34.1) at 2025-06-17 16:23:33 +0000