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 #include "port_before.h" 19 20 #include <sys/types.h> 21 #include <sys/socket.h> 22 #include <netinet/in.h> 23 #include <arpa/nameser.h> 24 #include <resolv.h> 25 26 #include <ctype.h> 27 #include <errno.h> 28 #include <stdio.h> 29 #include <string.h> 30 #include <stdlib.h> 31 32 #include <irs.h> 33 34 #include "port_after.h" 35 36 #include "irs_p.h" 37 38 #ifdef SPRINTF_CHAR 39 # define SPRINTF(x) strlen(sprintf/**/x) 40 #else 41 # define SPRINTF(x) sprintf x 42 #endif 43 44 void 45 map_v4v6_address(const char *src, char *dst) { 46 u_char *p = (u_char *)dst; 47 char tmp[NS_INADDRSZ]; 48 int i; 49 50 /* Stash a temporary copy so our caller can update in place. */ 51 memcpy(tmp, src, NS_INADDRSZ); 52 /* Mark this ipv6 addr as a mapped ipv4. */ 53 for (i = 0; i < 10; i++) 54 *p++ = 0x00; 55 *p++ = 0xff; 56 *p++ = 0xff; 57 /* Retrieve the saved copy and we're done. */ 58 memcpy((void*)p, tmp, NS_INADDRSZ); 59 } 60 61 int 62 make_group_list(struct irs_gr *this, const char *name, 63 gid_t basegid, gid_t *groups, int *ngroups) 64 { 65 struct group *grp; 66 int i, ng; 67 int ret, maxgroups; 68 69 ret = -1; 70 ng = 0; 71 maxgroups = *ngroups; 72 /* 73 * When installing primary group, duplicate it; 74 * the first element of groups is the effective gid 75 * and will be overwritten when a setgid file is executed. 76 */ 77 if (ng >= maxgroups) 78 goto done; 79 groups[ng++] = basegid; 80 if (ng >= maxgroups) 81 goto done; 82 groups[ng++] = basegid; 83 /* 84 * Scan the group file to find additional groups. 85 */ 86 (*this->rewind)(this); 87 while ((grp = (*this->next)(this)) != NULL) { 88 if ((gid_t)grp->gr_gid == basegid) 89 continue; 90 for (i = 0; grp->gr_mem[i]; i++) { 91 if (!strcmp(grp->gr_mem[i], name)) { 92 if (ng >= maxgroups) 93 goto done; 94 groups[ng++] = grp->gr_gid; 95 break; 96 } 97 } 98 } 99 ret = 0; 100 done: 101 *ngroups = ng; 102 return (ret); 103 } 104 105 /*! \file */ 106