summaryrefslogtreecommitdiff
path: root/libmailutils/cidr
diff options
context:
space:
mode:
Diffstat (limited to 'libmailutils/cidr')
-rw-r--r--libmailutils/cidr/Makefile.am27
-rw-r--r--libmailutils/cidr/fromsa.c101
-rw-r--r--libmailutils/cidr/fromstr.c128
-rw-r--r--libmailutils/cidr/match.c38
-rw-r--r--libmailutils/cidr/tosa.c78
-rw-r--r--libmailutils/cidr/tostr.c159
6 files changed, 531 insertions, 0 deletions
diff --git a/libmailutils/cidr/Makefile.am b/libmailutils/cidr/Makefile.am
new file mode 100644
index 000000000..408806f79
--- /dev/null
+++ b/libmailutils/cidr/Makefile.am
@@ -0,0 +1,27 @@
+# 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/>.
+
+noinst_LTLIBRARIES = libcidr.la
+
+libcidr_la_SOURCES = \
+ fromsa.c\
+ fromstr.c\
+ match.c\
+ tosa.c\
+ tostr.c
+
+INCLUDES = @MU_LIB_COMMON_INCLUDES@ -I/libmailutils
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;
+}
+
+
diff --git a/libmailutils/cidr/fromstr.c b/libmailutils/cidr/fromstr.c
new file mode 100644
index 000000000..4e7a56f80
--- /dev/null
+++ b/libmailutils/cidr/fromstr.c
@@ -0,0 +1,128 @@
+/* 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 <string.h>
+#include <stdlib.h>
+#include <arpa/inet.h>
+#include <mailutils/cidr.h>
+#include <mailutils/errno.h>
+#include <mailutils/sockaddr.h>
+
+static void
+masklen_to_netmask (unsigned char *buf, size_t len, size_t masklen)
+{
+ int i, cnt;
+
+ cnt = masklen / 8;
+ for (i = 0; i < cnt; i++)
+ buf[i] = 0xff;
+ if (i == MU_INADDR_BYTES)
+ return;
+ cnt = 8 - masklen % 8;
+ buf[i++] = (0xff >> cnt) << cnt;
+ for (; i < MU_INADDR_BYTES; i++)
+ buf[i] = 0;
+}
+
+int
+mu_cidr_from_string (struct mu_cidr *pcidr, const char *str)
+{
+ int rc;
+ char ipbuf[41];
+ struct mu_cidr cidr;
+ char *p;
+ size_t len;
+ union
+ {
+ struct in_addr in;
+#ifdef MAILUTILS_IPV6
+ struct in6_addr in6;
+#endif
+ } inaddr;
+
+ p = strchr (str, '/');
+ if (p)
+ len = p - str;
+ else
+ len = strlen (str);
+
+ if (len > sizeof (ipbuf))
+ return MU_ERR_BUFSPACE;
+
+ memcpy (ipbuf, str, len);
+ ipbuf[len] = 0;
+
+ if (mu_str_is_ipv4 (ipbuf))
+ cidr.family = AF_INET;
+#ifdef MAILUTILS_IPV6
+ else if (mu_str_is_ipv6 (ipbuf))
+ cidr.family = AF_INET6;
+#endif
+ else
+ return MU_ERR_FAMILY;
+
+ rc = inet_pton (cidr.family, ipbuf, &inaddr);
+ if (rc == -1)
+ return MU_ERR_FAMILY;
+ else if (rc == 0)
+ return MU_ERR_NONAME;
+ else if (rc != 1)
+ return MU_ERR_FAILURE;
+
+ cidr.len = _mu_inaddr_to_bytes (cidr.family, &inaddr, cidr.address);
+ if (cidr.len == 0)
+ return MU_ERR_FAMILY;
+
+ if (p)
+ {
+ char *end;
+ unsigned long masklen;
+
+ p++;
+
+ masklen = strtoul (p, &end, 10);
+ if (*end == 0)
+ masklen_to_netmask (cidr.netmask, cidr.len, masklen);
+ else if ((cidr.family == AF_INET && mu_str_is_ipv4 (p))
+#ifdef MAILUTILS_IPV6
+ || (cidr.family == AF_INET6 && mu_str_is_ipv6 (ipbuf))
+#endif
+ )
+ {
+ rc = inet_pton (cidr.family, p, &inaddr);
+ if (rc == -1)
+ return MU_ERR_FAMILY;
+ else if (rc == 0)
+ return MU_ERR_NONAME;
+ else if (rc != 1)
+ return MU_ERR_FAILURE;
+
+ _mu_inaddr_to_bytes (cidr.family, &inaddr, cidr.netmask);
+ }
+ else
+ return MU_ERR_FAMILY;
+ }
+ else
+ masklen_to_netmask (cidr.netmask, cidr.len, cidr.len * 8);
+
+ memcpy (pcidr, &cidr, sizeof (*pcidr));
+ return 0;
+}
+
diff --git a/libmailutils/cidr/match.c b/libmailutils/cidr/match.c
new file mode 100644
index 000000000..dff9194ee
--- /dev/null
+++ b/libmailutils/cidr/match.c
@@ -0,0 +1,38 @@
+/* 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 <mailutils/cidr.h>
+#include <mailutils/errno.h>
+
+int
+mu_cidr_match (struct mu_cidr *a, struct mu_cidr *b)
+{
+ int i;
+
+ if (a->family != b->family)
+ return 1;
+ for (i = 0; i < a->len; i++)
+ {
+ if (a->address[i] != (b->address[i] & a->netmask[i]))
+ return 1;
+ }
+ return 0;
+}
+
diff --git a/libmailutils/cidr/tosa.c b/libmailutils/cidr/tosa.c
new file mode 100644
index 000000000..c14a995da
--- /dev/null
+++ b/libmailutils/cidr/tosa.c
@@ -0,0 +1,78 @@
+/* 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>
+
+int
+mu_cidr_to_sockaddr (struct mu_cidr *cidr, struct sockaddr **psa)
+{
+ union
+ {
+ struct sockaddr sa;
+ struct sockaddr_in s_in;
+#ifdef MAILUTILS_IPV6
+ struct sockaddr_in6 s_in6;
+#endif
+ } addr;
+ struct sockaddr *sa;
+ int socklen;
+ int i;
+
+ memset (&addr, 0, sizeof (addr));
+ addr.sa.sa_family = cidr->family;
+ switch (cidr->family)
+ {
+ case AF_INET:
+ socklen = sizeof (addr.s_in);
+ for (i = 0; i < cidr->len; i++)
+ {
+ addr.s_in.sin_addr.s_addr <<= 8;
+ addr.s_in.sin_addr.s_addr |= cidr->address[i];
+ }
+ break;
+
+#ifdef MAILUTILS_IPV6
+ case AF_INET6:
+ socklen = sizeof (addr.s_in6);
+ memcpy (&addr.s_in6.sin6_addr, cidr->address, 16);
+ break;
+#endif
+
+ default:
+ return MU_ERR_FAMILY;
+ }
+
+ sa = malloc (socklen);
+ if (!sa)
+ return ENOMEM;
+ memcpy (sa, &addr, socklen);
+ *psa = sa;
+ return 0;
+}
+
diff --git a/libmailutils/cidr/tostr.c b/libmailutils/cidr/tostr.c
new file mode 100644
index 000000000..3d1ee5f49
--- /dev/null
+++ b/libmailutils/cidr/tostr.c
@@ -0,0 +1,159 @@
+/* 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 <string.h>
+#include <stdlib.h>
+#include <mailutils/cidr.h>
+#include <mailutils/errno.h>
+
+static int
+to_xdig (unsigned char b)
+{
+ if (b >= 0xa)
+ return 'A' + b - 0xa;
+ else
+ return '0' + b;
+}
+
+static size_t
+format_ipv6_bytes (const unsigned char *bytes, int len,
+ char *buf, size_t size)
+{
+ size_t total = 0;
+ int i;
+
+ for (i = 0; i < len; i += 2)
+ {
+ if (i)
+ {
+ if (total++ < size)
+ *buf++ = ':';
+ }
+ if (total++ < size)
+ *buf++ = to_xdig (*bytes >> 4);
+ if (total++ < size)
+ *buf++ = to_xdig (*bytes & 0xf);
+ bytes++;
+ if (total++ < size)
+ *buf++ = to_xdig (*bytes >> 4);
+ if (total++ < size)
+ *buf++ = to_xdig (*bytes & 0xf);
+ bytes++;
+ }
+ return total;
+}
+
+static size_t
+format_ipv4_bytes (const unsigned char *bytes, int len,
+ char *buf, size_t size)
+{
+ int i;
+ size_t total = 0;
+
+ for (i = 0; i < len; i++)
+ {
+ unsigned char b = *bytes++;
+ char nbuf[3];
+ int j;
+
+ if (i)
+ {
+ if (total++ < size)
+ *buf++ = '.';
+ }
+
+ j = 0;
+ do
+ {
+ nbuf[j++] = b % 10 + '0';
+ b /= 10;
+ }
+ while (b);
+
+ for (; j; j--)
+ {
+ if (total++ < size)
+ *buf++ = nbuf[j - 1];
+ }
+ }
+ return total;
+}
+
+int
+mu_cidr_to_string (struct mu_cidr *cidr, int flags,
+ char *buf, size_t size, size_t *pret)
+{
+ size_t (*fmt) (const unsigned char *bytes, int len, char *buf, size_t size);
+ size_t n, total = 0;
+
+ if (size == 0)
+ return MU_ERR_BUFSPACE;
+ size--;
+ switch (cidr->family)
+ {
+ case AF_INET:
+ fmt = format_ipv4_bytes;
+ break;
+
+#ifdef MAILUTILS_IPV6
+ case AF_INET6:
+ fmt = format_ipv6_bytes;
+ break;
+#endif
+
+ default:
+ return MU_ERR_FAMILY;
+ }
+
+ n = fmt (cidr->address, cidr->len, buf, size);
+ if (buf)
+ buf += n;
+ total += n;
+
+ if (!(flags & MU_CIDR_FMT_ADDRONLY))
+ {
+ if (total++ < size)
+ *buf++ = '/';
+ n = fmt (cidr->netmask, cidr->len, buf, size - total);
+ if (buf)
+ buf += n;
+ total += n;
+ }
+
+ if (buf)
+ *buf++ = 0;
+ if (pret)
+ *pret = total;
+ return 0;
+}
+
+int
+mu_cidr_format (struct mu_cidr *cidr, int flags, char **pbuf)
+{
+ char buf[MU_CIDR_MAXBUFSIZE];
+ int rc = mu_cidr_to_string (cidr, flags, buf, sizeof (buf), NULL);
+ if (rc)
+ return rc;
+ *pbuf = strdup (buf);
+ if (!*buf)
+ return ENOMEM;
+ return 0;
+}
+

Return to:

Send suggestions and report system problems to the System administrator.

Generated by cgit.