1 /* 2 * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC") 3 * Copyright (c) 1996,1999 by Internet Software Consortium. 4 * 5 * Permission to use, copy, modify, and distribute this software for any 6 * purpose with or without fee is hereby granted, provided that the above 7 * copyright notice and this permission notice appear in all copies. 8 * 9 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES 10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR 12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT 15 * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 16 */ 17 18 #if defined(LIBC_SCCS) && !defined(lint) 19 static const char rcsid[] = "$Id: util.c,v 1.3 2005/04/27 04:56:34 sra Exp $"; 20 #endif 21 22 #include "port_before.h" 23 24 #include <sys/types.h> 25 #include <sys/socket.h> 26 #include <netinet/in.h> 27 #include <arpa/nameser.h> 28 #include <resolv.h> 29 30 #include <ctype.h> 31 #include <errno.h> 32 #include <stdio.h> 33 #include <string.h> 34 #include <stdlib.h> 35 36 #include <irs.h> 37 38 #include "port_after.h" 39 40 #include "irs_p.h" 41 42 #ifdef SPRINTF_CHAR 43 # define SPRINTF(x) strlen(sprintf/**/x) 44 #else 45 # define SPRINTF(x) sprintf x 46 #endif 47 48 void 49 map_v4v6_address(const char *src, char *dst) { 50 u_char *p = (u_char *)dst; 51 char tmp[NS_INADDRSZ]; 52 int i; 53 54 /* Stash a temporary copy so our caller can update in place. */ 55 memcpy(tmp, src, NS_INADDRSZ); 56 /* Mark this ipv6 addr as a mapped ipv4. */ 57 for (i = 0; i < 10; i++) 58 *p++ = 0x00; 59 *p++ = 0xff; 60 *p++ = 0xff; 61 /* Retrieve the saved copy and we're done. */ 62 memcpy((void*)p, tmp, NS_INADDRSZ); 63 } 64 65 int 66 make_group_list(struct irs_gr *this, const char *name, 67 gid_t basegid, gid_t *groups, int *ngroups) 68 { 69 struct group *grp; 70 int i, ng; 71 int ret, maxgroups; 72 73 ret = -1; 74 ng = 0; 75 maxgroups = *ngroups; 76 /* 77 * When installing primary group, duplicate it; 78 * the first element of groups is the effective gid 79 * and will be overwritten when a setgid file is executed. 80 */ 81 if (ng >= maxgroups) 82 goto done; 83 groups[ng++] = basegid; 84 if (ng >= maxgroups) 85 goto done; 86 groups[ng++] = basegid; 87 /* 88 * Scan the group file to find additional groups. 89 */ 90 (*this->rewind)(this); 91 while ((grp = (*this->next)(this)) != NULL) { 92 if ((gid_t)grp->gr_gid == basegid) 93 continue; 94 for (i = 0; grp->gr_mem[i]; i++) { 95 if (!strcmp(grp->gr_mem[i], name)) { 96 if (ng >= maxgroups) 97 goto done; 98 groups[ng++] = grp->gr_gid; 99 break; 100 } 101 } 102 } 103 ret = 0; 104 done: 105 *ngroups = ng; 106 return (ret); 107 } 108 109 /*! \file */ 110