108 lines
2.6 KiB
C
108 lines
2.6 KiB
C
/*
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* Copyright (c) 1996,1999 by Internet Software Consortium.
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
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* ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
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* CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
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* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
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* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
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* ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
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* SOFTWARE.
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*/
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#if defined(LIBC_SCCS) && !defined(lint)
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static const char rcsid[] = "$Id: util.c,v 1.11 2000/02/04 08:28:33 vixie Exp $";
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#endif
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#include "port_before.h"
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <arpa/nameser.h>
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#include <resolv.h>
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#include <ctype.h>
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#include <errno.h>
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <irs.h>
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#include "port_after.h"
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#include "irs_p.h"
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#ifdef SPRINTF_CHAR
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# define SPRINTF(x) strlen(sprintf/**/x)
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#else
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# define SPRINTF(x) sprintf x
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#endif
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void
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map_v4v6_address(const char *src, char *dst) {
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u_char *p = (u_char *)dst;
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char tmp[NS_INADDRSZ];
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int i;
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/* Stash a temporary copy so our caller can update in place. */
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memcpy(tmp, src, NS_INADDRSZ);
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/* Mark this ipv6 addr as a mapped ipv4. */
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for (i = 0; i < 10; i++)
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*p++ = 0x00;
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*p++ = 0xff;
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*p++ = 0xff;
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/* Retrieve the saved copy and we're done. */
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memcpy((void*)p, tmp, NS_INADDRSZ);
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}
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int
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make_group_list(struct irs_gr *this, const char *name,
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gid_t basegid, gid_t *groups, int *ngroups)
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{
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struct group *grp;
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int i, ng;
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int ret, maxgroups;
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ret = -1;
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ng = 0;
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maxgroups = *ngroups;
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/*
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* When installing primary group, duplicate it;
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* the first element of groups is the effective gid
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* and will be overwritten when a setgid file is executed.
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*/
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if (ng >= maxgroups)
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goto done;
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groups[ng++] = basegid;
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if (ng >= maxgroups)
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goto done;
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groups[ng++] = basegid;
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/*
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* Scan the group file to find additional groups.
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*/
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(*this->rewind)(this);
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while ((grp = (*this->next)(this)) != NULL) {
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if (grp->gr_gid == basegid)
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continue;
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for (i = 0; grp->gr_mem[i]; i++) {
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if (!strcmp(grp->gr_mem[i], name)) {
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if (ng >= maxgroups)
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goto done;
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groups[ng++] = grp->gr_gid;
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break;
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}
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}
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}
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ret = 0;
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done:
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*ngroups = ng;
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return (ret);
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}
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