diff options
Diffstat (limited to 'libmailutils/cidr/fromsa.c')
-rw-r--r-- | libmailutils/cidr/fromsa.c | 101 |
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; +} + + |