* Split out a fair bit of avahi-core into avahi-common for use by the client library

git-svn-id: file:///home/lennart/svn/public/avahi/trunk@98 941a03a8-eaeb-0310-b9a0-b1bbd8fe43fe

1 files changed, 166 insertions, 0 deletions

diff --git a/avahi-common/address.c b/avahi-common/address.c
new file mode 100644
index 0000000..3484707
--- /dev/null
+++ b/avahi-common/address.c
@@ -0,0 +1,166 @@
+/* $Id$ */
+
+/***
+  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 <sys/types.h>
+#include <sys/socket.h>
+#include <arpa/inet.h>
+#include <string.h>
+
+#include "address.h"
+
+guint avahi_address_get_size(const AvahiAddress *a) {
+    g_assert(a);
+
+    if (a->family == AF_INET)
+        return 4;
+    else if (a->family == AF_INET6)
+        return 16;
+
+    return 0;
+}
+
+gint avahi_address_cmp(const AvahiAddress *a, const AvahiAddress *b) {
+    g_assert(a);
+    g_assert(b);
+    
+    if (a->family != b->family)
+        return -1;
+
+    return memcmp(a->data.data, b->data.data, avahi_address_get_size(a));
+}
+
+gchar *avahi_address_snprint(char *s, guint length, const AvahiAddress *a) {
+    g_assert(s);
+    g_assert(length);
+    g_assert(a);
+    return (gchar*) inet_ntop(a->family, a->data.data, s, length);
+}
+
+gchar* avahi_reverse_lookup_name_ipv4(const AvahiIPv4Address *a) {
+    guint32 n = ntohl(a->address);
+    g_assert(a);
+
+    return g_strdup_printf("%u.%u.%u.%u.in-addr.arpa", n & 0xFF, (n >> 8) & 0xFF, (n >> 16) & 0xFF, n >> 24);
+}
+
+static gchar *reverse_lookup_name_ipv6(const AvahiIPv6Address *a, const gchar *suffix) {
+    
+    return g_strdup_printf("%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%s",
+                           a->address[15] & 0xF,
+                           a->address[15] >> 4,
+                           a->address[14] & 0xF,
+                           a->address[14] >> 4,
+                           a->address[13] & 0xF,
+                           a->address[13] >> 4,
+                           a->address[12] & 0xF,
+                           a->address[12] >> 4,
+                           a->address[11] & 0xF,
+                           a->address[11] >> 4,
+                           a->address[10] & 0xF,
+                           a->address[10] >> 4,
+                           a->address[9] & 0xF,
+                           a->address[9] >> 4,
+                           a->address[8] & 0xF,
+                           a->address[8] >> 4,
+                           a->address[7] & 0xF,
+                           a->address[7] >> 4,
+                           a->address[6] & 0xF,
+                           a->address[6] >> 4,
+                           a->address[5] & 0xF,
+                           a->address[5] >> 4,
+                           a->address[4] & 0xF,
+                           a->address[4] >> 4,
+                           a->address[3] & 0xF,
+                           a->address[3] >> 4,
+                           a->address[2] & 0xF,
+                           a->address[2] >> 4,
+                           a->address[1] & 0xF,
+                           a->address[1] >> 4,
+                           a->address[0] & 0xF,
+                           a->address[0] >> 4,
+                           suffix);
+}
+
+gchar *avahi_reverse_lookup_name_ipv6_arpa(const AvahiIPv6Address *a) {
+    return reverse_lookup_name_ipv6(a, "ip6.arpa");
+}
+
+gchar *avahi_reverse_lookup_name_ipv6_int(const AvahiIPv6Address *a) {
+    return reverse_lookup_name_ipv6(a, "ip6.int");
+}
+
+AvahiAddress *avahi_address_parse(const char *s, guchar family, AvahiAddress *ret_addr) {
+    g_assert(ret_addr);
+    g_assert(s);
+
+    if (inet_pton(family, s, ret_addr->data.data) < 0)
+        return NULL;
+
+    ret_addr->family = family;
+    
+    return ret_addr;
+}
+
+AvahiAddress *avahi_address_from_sockaddr(const struct sockaddr* sa, AvahiAddress *ret_addr) {
+    g_assert(sa);
+    g_assert(ret_addr);
+
+    g_assert(sa->sa_family == AF_INET || sa->sa_family == AF_INET6);
+
+    ret_addr->family = sa->sa_family;
+
+    if (sa->sa_family == AF_INET)
+        memcpy(&ret_addr->data.ipv4, &((struct sockaddr_in*) sa)->sin_addr, sizeof(ret_addr->data.ipv4));
+    else
+        memcpy(&ret_addr->data.ipv6, &((struct sockaddr_in6*) sa)->sin6_addr, sizeof(ret_addr->data.ipv6));
+
+    return ret_addr;
+}
+
+guint16 avahi_port_from_sockaddr(const struct sockaddr* sa) {
+    g_assert(sa);
+
+    g_assert(sa->sa_family == AF_INET || sa->sa_family == AF_INET6);
+
+    if (sa->sa_family == AF_INET)
+        return ntohs(((struct sockaddr_in*) sa)->sin_port);
+    else
+        return ntohs(((struct sockaddr_in6*) sa)->sin6_port);
+}
+
+gboolean avahi_address_is_ipv4_in_ipv6(const AvahiAddress *a) {
+    static const guint8 ipv4_in_ipv6[] = {
+        0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00,
+        0xFF, 0xFF, 0xFF, 0xFF };
+    
+    g_assert(a);
+
+    if (a->family != AF_INET6)
+        return FALSE;
+
+    return memcmp(a->data.ipv6.address, ipv4_in_ipv6, sizeof(ipv4_in_ipv6)) == 0;
+}
+