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-rw-r--r--lib/libc/gen/getgrent.c553
1 files changed, 0 insertions, 553 deletions
diff --git a/lib/libc/gen/getgrent.c b/lib/libc/gen/getgrent.c
deleted file mode 100644
index 26069c6..0000000
--- a/lib/libc/gen/getgrent.c
+++ /dev/null
@@ -1,553 +0,0 @@
-/*
- * Copyright (c) 1989, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#if defined(LIBC_SCCS) && !defined(lint)
-static char sccsid[] = "@(#)getgrent.c 8.2 (Berkeley) 3/21/94";
-#endif /* LIBC_SCCS and not lint */
-
-#include <sys/types.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <grp.h>
-
-static FILE *_gr_fp;
-static struct group _gr_group;
-static int _gr_stayopen;
-static int grscan(), start_gr();
-#ifdef YP
-#include <rpc/rpc.h>
-#include <rpcsvc/yp_prot.h>
-#include <rpcsvc/ypclnt.h>
-static int _gr_stepping_yp;
-static int _gr_yp_enabled;
-static int _getypgroup(struct group *, const char *, char *);
-static int _nextypgroup(struct group *);
-#endif
-
-/* initial size for malloc and increase steps for realloc */
-#define MAXGRP 64
-#define MAXLINELENGTH 256
-
-static char **members; /* list of group members */
-static int maxgrp; /* current length of **mebers */
-static char *line; /* temp buffer for group line */
-static int maxlinelength; /* current length of *line */
-
-/*
- * Lines longer than MAXLINELENGTHLIMIT will be count as an error.
- * <= 0 disable check for maximum line length
- * 256K is enough for 64,000 uids
- */
-#define MAXLINELENGTHLIMIT (256 * 1024)
-#define GROUP_IGNORE_COMMENTS 1 /* allow comments in /etc/group */
-
-struct group *
-getgrent()
-{
- if (!_gr_fp && !start_gr()) {
- return NULL;
- }
-
-#ifdef YP
- if (_gr_stepping_yp) {
- if (_nextypgroup(&_gr_group))
- return(&_gr_group);
- }
-tryagain:
-#endif
-
- if (!grscan(0, 0, NULL))
- return(NULL);
-#ifdef YP
- if(_gr_group.gr_name[0] == '+' && _gr_group.gr_name[1]) {
- _getypgroup(&_gr_group, &_gr_group.gr_name[1],
- "group.byname");
- } else if(_gr_group.gr_name[0] == '+') {
- if (!_nextypgroup(&_gr_group))
- goto tryagain;
- else
- return(&_gr_group);
- }
-#endif
- return(&_gr_group);
-}
-
-struct group *
-getgrnam(name)
- const char *name;
-{
- int rval;
-
- if (!start_gr())
- return(NULL);
-#ifdef YP
- tryagain:
-#endif
- rval = grscan(1, 0, name);
-#ifdef YP
- if(rval == -1 && (_gr_yp_enabled < 0 || (_gr_yp_enabled &&
- _gr_group.gr_name[0] == '+'))) {
- if (!(rval = _getypgroup(&_gr_group, name, "group.byname")))
- goto tryagain;
- }
-#endif
- if (!_gr_stayopen)
- endgrent();
- return(rval ? &_gr_group : NULL);
-}
-
-struct group *
-#ifdef __STDC__
-getgrgid(gid_t gid)
-#else
-getgrgid(gid)
- gid_t gid;
-#endif
-{
- int rval;
-
- if (!start_gr())
- return(NULL);
-#ifdef YP
- tryagain:
-#endif
- rval = grscan(1, gid, NULL);
-#ifdef YP
- if(rval == -1 && _gr_yp_enabled) {
- char buf[16];
- snprintf(buf, sizeof buf, "%d", (unsigned)gid);
- if (!(rval = _getypgroup(&_gr_group, buf, "group.bygid")))
- goto tryagain;
- }
-#endif
- if (!_gr_stayopen)
- endgrent();
- return(rval ? &_gr_group : NULL);
-}
-
-static int
-start_gr()
-{
- if (_gr_fp) {
- rewind(_gr_fp);
- return(1);
- }
- _gr_fp = fopen(_PATH_GROUP, "r");
- if(!_gr_fp) return 0;
-#ifdef YP
- /*
- * This is a disgusting hack, used to determine when YP is enabled.
- * This would be easier if we had a group database to go along with
- * the password database.
- */
- {
- char *line;
- size_t linelen;
- _gr_yp_enabled = 0;
- while((line = fgetln(_gr_fp, &linelen)) != NULL) {
- if(line[0] == '+') {
- if(line[1] && line[1] != ':' && !_gr_yp_enabled) {
- _gr_yp_enabled = 1;
- } else {
- _gr_yp_enabled = -1;
- break;
- }
- }
- }
- rewind(_gr_fp);
- }
-#endif
-
- if (maxlinelength == 0) {
- if ((line = (char *)malloc(sizeof(char) *
- MAXLINELENGTH)) == NULL)
- return(0);
- maxlinelength += MAXLINELENGTH;
- }
-
- if (maxgrp == 0) {
- if ((members = (char **)malloc(sizeof(char **) *
- MAXGRP)) == NULL)
- return(0);
- maxgrp += MAXGRP;
- }
-
- return 1;
-}
-
-int
-setgrent()
-{
- return(setgroupent(0));
-}
-
-int
-setgroupent(stayopen)
- int stayopen;
-{
- if (!start_gr())
- return(0);
- _gr_stayopen = stayopen;
-#ifdef YP
- _gr_stepping_yp = 0;
-#endif
- return(1);
-}
-
-void
-endgrent()
-{
-#ifdef YP
- _gr_stepping_yp = 0;
-#endif
- if (_gr_fp) {
- (void)fclose(_gr_fp);
- _gr_fp = NULL;
- }
-}
-
-static int
-grscan(search, gid, name)
- register int search, gid;
- register char *name;
-{
- register char *cp, **m;
- char *bp;
-
-
-#ifdef YP
- int _ypfound;
-#endif
- for (;;) {
-#ifdef YP
- _ypfound = 0;
-#endif
- if (fgets(line, maxlinelength, _gr_fp) == NULL)
- return(0);
-
- if (!index(line, '\n')) {
- do {
- if (feof(_gr_fp))
- return(0);
-
- /* don't allocate infinite memory */
- if (MAXLINELENGTHLIMIT > 0 &&
- maxlinelength >= MAXLINELENGTHLIMIT)
- return(0);
-
- if ((line = (char *)realloc(line,
- sizeof(char) *
- (maxlinelength + MAXLINELENGTH))) == NULL)
- return(0);
-
- if (fgets(line + maxlinelength - 1,
- MAXLINELENGTH + 1, _gr_fp) == NULL)
- return(0);
-
- maxlinelength += MAXLINELENGTH;
- } while (!index(line + maxlinelength -
- MAXLINELENGTH - 1, '\n'));
- }
-
-#ifdef GROUP_IGNORE_COMMENTS
- /*
- * Ignore comments: ^[ \t]*#
- */
- for (cp = line; *cp != '\0'; cp++)
- if (*cp != ' ' && *cp != '\t')
- break;
- if (*cp == '#' || *cp == '\0')
- continue;
-#endif
-
- bp = line;
-
- if ((_gr_group.gr_name = strsep(&bp, ":\n")) == NULL)
- break;
-#ifdef YP
- /*
- * XXX We need to be careful to avoid proceeding
- * past this point under certain circumstances or
- * we risk dereferencing null pointers down below.
- */
- if (_gr_group.gr_name[0] == '+') {
- if (strlen(_gr_group.gr_name) == 1) {
- switch(search) {
- case 0:
- return(1);
- case 1:
- return(-1);
- default:
- return(0);
- }
- } else {
- cp = &_gr_group.gr_name[1];
- if (search && name != NULL)
- if (strcmp(cp, name))
- continue;
- if (!_getypgroup(&_gr_group, cp,
- "group.byname"))
- continue;
- if (search && name == NULL)
- if (gid != _gr_group.gr_gid)
- continue;
- /* We're going to override -- tell the world. */
- _ypfound++;
- }
- }
-#else
- if (_gr_group.gr_name[0] == '+')
- continue;
-#endif /* YP */
- if (search && name) {
- if(strcmp(_gr_group.gr_name, name)) {
- continue;
- }
- }
-#ifdef YP
- if ((cp = strsep(&bp, ":\n")) == NULL)
- if (_ypfound)
- return(1);
- else
- break;
- if (strlen(cp) || !_ypfound)
- _gr_group.gr_passwd = cp;
-#else
- if ((_gr_group.gr_passwd = strsep(&bp, ":\n")) == NULL)
- break;
-#endif
- if (!(cp = strsep(&bp, ":\n")))
-#ifdef YP
- if (_ypfound)
- return(1);
- else
-#endif
- continue;
-#ifdef YP
- /*
- * Hurm. Should we be doing this? We allow UIDs to
- * be overridden -- what about GIDs?
- */
- if (!_ypfound)
-#endif
- _gr_group.gr_gid = atoi(cp);
- if (search && name == NULL && _gr_group.gr_gid != gid)
- continue;
- cp = NULL;
- if (bp == NULL) /* !!! Must check for this! */
- break;
-#ifdef YP
- if ((cp = strsep(&bp, ":\n")) == NULL)
- break;
-
- if (!strlen(cp) && _ypfound)
- return(1);
- else
- members[0] = NULL;
- bp = cp;
- cp = NULL;
-#endif
- for (m = members; ; bp++) {
- if (m == (members + maxgrp - 1)) {
- if ((members = (char **)
- realloc(members,
- sizeof(char **) *
- (maxgrp + MAXGRP))) == NULL)
- return(0);
- m = members + maxgrp - 1;
- maxgrp += MAXGRP;
- }
- if (*bp == ',') {
- if (cp) {
- *bp = '\0';
- *m++ = cp;
- cp = NULL;
- }
- } else if (*bp == '\0' || *bp == '\n' || *bp == ' ') {
- if (cp) {
- *bp = '\0';
- *m++ = cp;
- }
- break;
- } else if (cp == NULL)
- cp = bp;
-
- }
- _gr_group.gr_mem = members;
- *m = NULL;
- return(1);
- }
- /* NOTREACHED */
- return (0);
-}
-
-#ifdef YP
-
-static int
-_gr_breakout_yp(struct group *gr, char *result)
-{
- char *s, *cp;
- char **m;
-
- /*
- * XXX If 's' ends up being a NULL pointer, punt on this group.
- * It means the NIS group entry is badly formatted and should
- * be skipped.
- */
- if ((s = strsep(&result, ":")) == NULL) return 0; /* name */
- gr->gr_name = s;
-
- if ((s = strsep(&result, ":")) == NULL) return 0; /* password */
- gr->gr_passwd = s;
-
- if ((s = strsep(&result, ":")) == NULL) return 0; /* gid */
- gr->gr_gid = atoi(s);
-
- if ((s = result) == NULL) return 0;
- cp = 0;
-
- for (m = members; ; s++) {
- if (m == members + maxgrp - 1) {
- if ((members = (char **)realloc(members,
- sizeof(char **) * (maxgrp + MAXGRP))) == NULL)
- return(0);
- m = members + maxgrp - 1;
- maxgrp += MAXGRP;
- }
- if (*s == ',') {
- if (cp) {
- *s = '\0';
- *m++ = cp;
- cp = NULL;
- }
- } else if (*s == '\0' || *s == '\n' || *s == ' ') {
- if (cp) {
- *s = '\0';
- *m++ = cp;
- }
- break;
- } else if (cp == NULL) {
- cp = s;
- }
- }
- _gr_group.gr_mem = members;
- *m = NULL;
-
- return 1;
-}
-
-static char *_gr_yp_domain;
-
-static int
-_getypgroup(struct group *gr, const char *name, char *map)
-{
- char *result, *s;
- static char resultbuf[YPMAXRECORD + 2];
- int resultlen;
-
- if(!_gr_yp_domain) {
- if(yp_get_default_domain(&_gr_yp_domain))
- return 0;
- }
-
- if(yp_match(_gr_yp_domain, map, name, strlen(name),
- &result, &resultlen))
- return 0;
-
- s = strchr(result, '\n');
- if(s) *s = '\0';
-
- if(resultlen >= sizeof resultbuf) return 0;
- strncpy(resultbuf, result, resultlen);
- resultbuf[resultlen] = '\0';
- free(result);
- return(_gr_breakout_yp(gr, resultbuf));
-
-}
-
-
-static int
-_nextypgroup(struct group *gr)
-{
- static char *key;
- static int keylen;
- char *lastkey, *result;
- static char resultbuf[YPMAXRECORD + 2];
- int resultlen;
- int rv;
-
- if(!_gr_yp_domain) {
- if(yp_get_default_domain(&_gr_yp_domain))
- return 0;
- }
-
- if(!_gr_stepping_yp) {
- if(key) free(key);
- rv = yp_first(_gr_yp_domain, "group.byname",
- &key, &keylen, &result, &resultlen);
- if(rv) {
- return 0;
- }
- _gr_stepping_yp = 1;
- goto unpack;
- } else {
-tryagain:
- lastkey = key;
- rv = yp_next(_gr_yp_domain, "group.byname", key, keylen,
- &key, &keylen, &result, &resultlen);
- free(lastkey);
-unpack:
- if(rv) {
- _gr_stepping_yp = 0;
- return 0;
- }
-
- if(resultlen > sizeof(resultbuf)) {
- free(result);
- goto tryagain;
- }
-
- strncpy(resultbuf, result, resultlen);
- resultbuf[resultlen] = '\0';
- free(result);
- if((result = strchr(resultbuf, '\n')) != NULL)
- *result = '\0';
- if (_gr_breakout_yp(gr, resultbuf))
- return(1);
- else
- goto tryagain;
- }
-}
-
-#endif /* YP */
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