1/*++ 2/* NAME 3/* namadr_list 3 4/* SUMMARY 5/* name/address list membership 6/* SYNOPSIS 7/* #include <namadr_list.h> 8/* 9/* NAMADR_LIST *namadr_list_init(flags, pattern_list) 10/* int flags; 11/* const char *pattern_list; 12/* 13/* int namadr_list_match(list, name, addr) 14/* NAMADR_LIST *list; 15/* const char *name; 16/* const char *addr; 17/* 18/* void namadr_list_free(list) 19/* NAMADR_LIST *list; 20/* DESCRIPTION 21/* This is a convenience wrapper around the match_list module. 22/* 23/* This module implements tests for list membership of a 24/* hostname or network address. 25/* 26/* A list pattern specifies a host name, a domain name, 27/* an internet address, or a network/mask pattern, where the 28/* mask specifies the number of bits in the network part. 29/* When a pattern specifies a file name, its contents are 30/* substituted for the file name; when a pattern is a 31/* type:name table specification, table lookup is used 32/* instead. 33/* Patterns are separated by whitespace and/or commas. In 34/* order to reverse the result, precede a pattern with an 35/* exclamation point (!). 36/* 37/* A host matches a list when its name or address matches 38/* a pattern, or when any of its parent domains matches a 39/* pattern. The matching process is case insensitive. 40/* 41/* namadr_list_init() performs initializations. The first 42/* argument is the bit-wise OR of zero or more of the 43/* following: 44/* .IP MATCH_FLAG_PARENT 45/* The hostname pattern foo.com matches itself and any name below 46/* the domain foo.com. If this flag is cleared, foo.com matches itself 47/* only, and .foo.com matches any name below the domain foo.com. 48/* .IP MATCH_FLAG_RETURN 49/* Request that namadr_list_match() logs a warning and returns 50/* zero with list->error set to a non-zero dictionary error 51/* code, instead of raising a fatal error. 52/* .PP 53/* Specify MATCH_FLAG_NONE to request none of the above. 54/* The second argument is a list of patterns, or the absolute 55/* pathname of a file with patterns. 56/* 57/* namadr_list_match() matches the specified host name and 58/* address against the specified list of patterns. 59/* 60/* namadr_list_free() releases storage allocated by namadr_list_init(). 61/* DIAGNOSTICS 62/* Fatal errors: unable to open or read a pattern file; invalid 63/* pattern. Panic: interface violations. 64/* SEE ALSO 65/* match_list(3) generic list matching 66/* match_ops(3) match host by name or by address 67/* LICENSE 68/* .ad 69/* .fi 70/* The Secure Mailer license must be distributed with this software. 71/* AUTHOR(S) 72/* Wietse Venema 73/* IBM T.J. Watson Research 74/* P.O. Box 704 75/* Yorktown Heights, NY 10598, USA 76/*--*/ 77 78/* System library. */ 79 80#include <sys_defs.h> 81 82/* Utility library. */ 83 84#include <match_list.h> 85 86/* Global library. */ 87 88#include "namadr_list.h" 89 90#ifdef TEST 91 92#include <msg.h> 93#include <stdlib.h> 94#include <unistd.h> 95#include <vstream.h> 96#include <msg_vstream.h> 97#include <dict.h> 98 99static void usage(char *progname) 100{ 101 msg_fatal("usage: %s [-v] pattern_list hostname address", progname); 102} 103 104int main(int argc, char **argv) 105{ 106 NAMADR_LIST *list; 107 char *host; 108 char *addr; 109 int ch; 110 111 msg_vstream_init(argv[0], VSTREAM_ERR); 112 113 while ((ch = GETOPT(argc, argv, "v")) > 0) { 114 switch (ch) { 115 case 'v': 116 msg_verbose++; 117 break; 118 default: 119 usage(argv[0]); 120 } 121 } 122 if (argc != optind + 3) 123 usage(argv[0]); 124 dict_allow_surrogate = 1; 125 list = namadr_list_init(MATCH_FLAG_PARENT | MATCH_FLAG_RETURN, argv[optind]); 126 host = argv[optind + 1]; 127 addr = argv[optind + 2]; 128 vstream_printf("%s/%s: %s\n", host, addr, 129 namadr_list_match(list, host, addr) ? 130 "YES" : list->error == 0 ? "NO" : "ERROR"); 131 vstream_fflush(VSTREAM_OUT); 132 namadr_list_free(list); 133 return (0); 134} 135 136#endif 137