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Diffstat (limited to 'libmailutils/cidr/fromsa.c')
-rw-r--r--libmailutils/cidr/fromsa.c101
1 files changed, 101 insertions, 0 deletions
diff --git a/libmailutils/cidr/fromsa.c b/libmailutils/cidr/fromsa.c
new file mode 100644
index 000000000..a2fda6680
--- /dev/null
+++ b/libmailutils/cidr/fromsa.c
@@ -0,0 +1,101 @@
+/* GNU Mailutils -- a suite of utilities for electronic mail
+ Copyright (C) 2011 Free Software Foundation, Inc.
+
+ This library 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 3 of the License, or (at your option) any later version.
+
+ This library 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 this library. If not, see
+ <http://www.gnu.org/licenses/>. */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/stat.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <netdb.h>
+#include <string.h>
+#include <stdlib.h>
+#include <mailutils/cidr.h>
+#include <mailutils/errno.h>
+
+static void
+uint32_to_bytes (unsigned char *bytes, uint32_t u)
+{
+ int i;
+
+ for (i = 0; i < 4; i++)
+ {
+ bytes[i] = u & 0xff;
+ u >>= 8;
+ }
+}
+
+int
+_mu_inaddr_to_bytes (int af, void *buf, unsigned char *bytes)
+{
+ uint32_t u;
+
+ switch (af)
+ {
+ case AF_INET:
+ memcpy (&u, buf, sizeof u);
+ uint32_to_bytes (bytes, u);
+ return 4;
+
+#ifdef MAILUTILS_IPV6
+ case AF_INET6:
+ memcpy (bytes, buf, 16);
+ return 16;
+#endif
+ }
+ return 0;
+}
+
+int
+_mu_sockaddr_to_bytes (unsigned char *bytes, struct sockaddr const *sa)
+{
+ switch (sa->sa_family)
+ {
+ case AF_INET:
+ uint32_to_bytes (bytes, ((struct sockaddr_in*)sa)->sin_addr.s_addr);
+ return 4;
+
+#ifdef MAILUTILS_IPV6
+ case AF_INET6:
+ memcpy (bytes, &((struct sockaddr_in6*)sa)->sin6_addr, 16);
+ return 16;
+#endif
+ }
+ return 0;
+}
+
+int
+mu_cidr_from_sockaddr (struct mu_cidr *cidr, const struct sockaddr *sa)
+{
+ unsigned char address[MU_INADDR_BYTES];
+ int len;
+ int i;
+
+ len = _mu_sockaddr_to_bytes (address, sa);
+ if (len == 0)
+ return MU_ERR_FAMILY;
+ cidr->family = sa->sa_family;
+ cidr->len = len;
+ memcpy (cidr->address, address, sizeof (cidr->address));
+ for (i = 0; i < MU_INADDR_BYTES; i++)
+ cidr->netmask[i] = 0xff;
+ return 0;
+}
+
+

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