Imported Upstream version 1.8.1p2

[debian/sudo] / plugins / sudoers / interfaces.c

diff --git a/plugins/sudoers/interfaces.c b/plugins/sudoers/interfaces.c
new file mode 100644 (file)
index 0000000..acf0568
--- /dev/null
+++ b/plugins/sudoers/interfaces.c
@@ -0,0 +1,114 @@
+/*
+ * Copyright (c) 2010 Todd C. Miller <Todd.Miller@courtesan.com>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <config.h>
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/param.h>
+#include <stdio.h>
+#ifdef STDC_HEADERS
+# include <stdlib.h>
+# include <stddef.h>
+#else
+# ifdef HAVE_STDLIB_H
+#  include <stdlib.h>
+# endif
+#endif /* STDC_HEADERS */
+#ifdef HAVE_STRING_H
+# if defined(HAVE_MEMORY_H) && !defined(STDC_HEADERS)
+#  include <memory.h>
+# endif
+# include <string.h>
+#endif /* HAVE_STRING_H */
+#ifdef HAVE_STRINGS_H
+# include <strings.h>
+#endif /* HAVE_STRINGS_H */
+#ifdef HAVE_UNISTD_H
+# include <unistd.h>
+#endif /* HAVE_UNISTD_H */
+#include <netinet/in.h>  
+#include <arpa/inet.h>
+#include <netdb.h>
+#include <errno.h>
+
+#include "sudoers.h"
+#include "interfaces.h"
+
+#ifndef INADDR_NONE
+# define INADDR_NONE ((unsigned int)-1)
+#endif
+
+/*
+ * Parse a space-delimited list of IP address/netmask pairs and
+ * store in a list of interface structures.
+ */
+void
+set_interfaces(const char *ai)
+{
+    char *addrinfo, *addr, *mask;
+    struct interface *ifp;
+
+    addrinfo = estrdup(ai);
+    for (addr = strtok(addrinfo, " \t"); addr != NULL; addr = strtok(NULL, " \t")) {
+       /* Separate addr and mask. */
+       if ((mask = strchr(addr, '/')) == NULL)
+           continue;
+       *mask++ = '\0';
+
+       /* Parse addr and store in list. */
+       ifp = emalloc(sizeof(*ifp));
+       if (strchr(addr, ':')) {
+           /* IPv6 */
+#ifdef HAVE_IN6_ADDR
+           ifp->family = AF_INET6;
+           if (inet_pton(AF_INET6, addr, &ifp->addr.ip6) != 1 ||
+               inet_pton(AF_INET6, mask, &ifp->netmask.ip6) != 1)
+#endif
+           {
+               efree(ifp);
+               continue;
+           }
+       } else {
+           /* IPv4 */
+           ifp->family = AF_INET;
+           ifp->addr.ip4.s_addr = inet_addr(addr);
+           ifp->netmask.ip4.s_addr = inet_addr(mask);
+           if (ifp->addr.ip4.s_addr == INADDR_NONE ||
+               ifp->netmask.ip4.s_addr == INADDR_NONE) {
+               efree(ifp);
+               continue;
+           }
+       }
+       ifp->next = interfaces;
+       interfaces = ifp;
+    }
+    efree(addrinfo);
+}
+
+void
+dump_interfaces(const char *ai)
+{
+    char *cp, *addrinfo;
+
+    addrinfo = estrdup(ai);
+
+    sudo_printf(SUDO_CONV_INFO_MSG, "Local IP address and netmask pairs:\n");
+    for (cp = strtok(addrinfo, " \t"); cp != NULL; cp = strtok(NULL, " \t"))
+       sudo_printf(SUDO_CONV_INFO_MSG, "\t%s\n", cp);
+
+    efree(addrinfo);
+}