projects / people / pmueller / ipfire-2.x.git / blame
| Commit | Line | Data |
|---|---|---|
| cd1a2927 MT |
1 | /* Derivated from SmoothWall helper programs\r |
| 2 | *\r | |
| 3 | * This program is distributed under the terms of the GNU General Public\r | |
| 4 | * Licence. See the file COPYING for details.\r | |
| 5 | *\r | |
| 6 | * (c) Daniel Goscomb, 2001\r | |
| 7 | *\r | |
| 8 | * Modifications and improvements by Lawrence Manning.\r | |
| 9 | *\r | |
| 10 | * 19/04/03 Robert Kerr Fixed root exploit\r | |
| 11 | *\r | |
| 12 | * 20/08/05 Achim Weber 20 Modified to have a binary for the new firewall options page in IPCop 1.4.8\r | |
| 13 | *\r | |
| 14 | * 02/10/05 Gilles Espinasse treat only ping actually\r | |
| 15 | *\r | |
| 16 | * $Id: setfilters.c,v 1.1.2.2 2006/02/07 20:54:16 gespinasse Exp $\r | |
| 17 | *\r | |
| 18 | */\r | |
| 19 | \r | |
| 20 | #include <stdio.h>\r | |
| 21 | #include <stdlib.h>\r | |
| 22 | #include <string.h>\r | |
| 23 | #include "libsmooth.h"\r | |
| 24 | #include "setuid.h"\r | |
| 25 | \r | |
| 26 | struct keyvalue *kv = NULL;\r | |
| 27 | FILE *ifacefile = NULL;\r | |
| 28 | \r | |
| 29 | void exithandler(void)\r | |
| 30 | {\r | |
| 31 | if(kv)\r | |
| 32 | freekeyvalues(kv);\r | |
| 33 | }\r | |
| 34 | \r | |
| 35 | int main(void)\r | |
| 36 | {\r | |
| 37 | char iface[STRING_SIZE] = "";\r | |
| 38 | char command[STRING_SIZE];\r | |
| 39 | char disableping[STRING_SIZE];\r | |
| 40 | int redAvailable = 1;\r | |
| 41 | \r | |
| 42 | if (!(initsetuid()))\r | |
| 43 | exit(1);\r | |
| 44 | \r | |
| 45 | atexit(exithandler);\r | |
| 46 | \r | |
| 47 | /* Read in and verify config */\r | |
| 48 | kv=initkeyvalues();\r | |
| 49 | \r | |
| 50 | if (!readkeyvalues(kv, CONFIG_ROOT "/optionsfw/settings")) {\r | |
| 51 | fprintf(stderr, "Cannot read firewall option settings\n");\r | |
| 52 | exit(1);\r | |
| 53 | }\r | |
| 54 | \r | |
| 55 | if (!findkey(kv, "DISABLEPING", disableping)) {\r | |
| 56 | fprintf(stderr, "Cannot read DISABLEPING\n");\r | |
| 57 | exit(1);\r | |
| 58 | }\r | |
| 59 | \r | |
| 60 | if (strcmp(disableping, "NO") != 0 && strcmp(disableping, "ONLYRED") != 0 && strcmp(disableping, "ALL") != 0) {\r | |
| 61 | fprintf(stderr, "Bad DISABLEPING: %s\n", disableping);\r | |
| 62 | exit(1);\r | |
| 63 | }\r | |
| 64 | \r | |
| 65 | if (!(ifacefile = fopen(CONFIG_ROOT "/red/iface", "r"))) {\r | |
| 66 | redAvailable = 0;\r | |
| 67 | } else {\r | |
| 68 | if (fgets(iface, STRING_SIZE, ifacefile)) {\r | |
| 69 | if (iface[strlen(iface) - 1] == '\n')\r | |
| 70 | iface[strlen(iface) - 1] = '\0';\r | |
| 71 | }\r | |
| 72 | fclose (ifacefile);\r | |
| 73 | if (!VALID_DEVICE(iface)) {\r | |
| 74 | fprintf(stderr, "Bad iface: %s\n", iface);\r | |
| 75 | exit(1);\r | |
| 76 | }\r | |
| 77 | redAvailable = 1;\r | |
| 78 | }\r | |
| 79 | \r | |
| 80 | safe_system("/sbin/iptables -F GUIINPUT");\r | |
| 81 | \r | |
| 82 | /* don't need to do anything if ping is disabled, so treat only other cases */\r | |
| 83 | if (strcmp(disableping, "NO") == 0\r | |
| 84 | || (strcmp(disableping, "ONLYRED") == 0 && redAvailable == 0)) {\r | |
| 85 | // We allow ping (icmp type 8) on every interfaces\r | |
| 86 | // or RED is not available, so we can enable it on all (available) Interfaces\r | |
| 87 | memset(command, 0, STRING_SIZE);\r | |
| 88 | snprintf(command, STRING_SIZE - 1, "/sbin/iptables -A GUIINPUT -p icmp --icmp-type 8 -j ACCEPT");\r | |
| 89 | safe_system(command);\r | |
| 90 | } else {\r | |
| 91 | // Allow ping only on internal interfaces\r | |
| 92 | if(strcmp(disableping, "ONLYRED") == 0) {\r | |
| 93 | memset(command, 0, STRING_SIZE);\r | |
| 94 | snprintf(command, STRING_SIZE - 1,\r | |
| 95 | "/sbin/iptables -A GUIINPUT -i ! %s -p icmp --icmp-type 8 -j ACCEPT", iface);\r | |
| 96 | safe_system(command);\r | |
| 97 | }\r | |
| 98 | }\r | |
| 99 | return 0;\r | |
| 100 | }\r |