diff options
Diffstat (limited to 'libexec/mknetid')
-rw-r--r-- | libexec/mknetid/Makefile | 8 | ||||
-rw-r--r-- | libexec/mknetid/hash.c | 179 | ||||
-rw-r--r-- | libexec/mknetid/hash.h | 54 | ||||
-rw-r--r-- | libexec/mknetid/mknetid.8 | 141 | ||||
-rw-r--r-- | libexec/mknetid/mknetid.c | 289 | ||||
-rw-r--r-- | libexec/mknetid/parse_group.c | 167 |
6 files changed, 838 insertions, 0 deletions
diff --git a/libexec/mknetid/Makefile b/libexec/mknetid/Makefile new file mode 100644 index 0000000..9a3e82b --- /dev/null +++ b/libexec/mknetid/Makefile @@ -0,0 +1,8 @@ +# $Id: Makefile,v 1.1 1996/06/24 00:05:28 wpaul Exp $ + +PROG= mknetid +SRCS= mknetid.c hash.c parse_group.c + +MAN8= mknetid.8 + +.include <bsd.prog.mk> diff --git a/libexec/mknetid/hash.c b/libexec/mknetid/hash.c new file mode 100644 index 0000000..ec41672 --- /dev/null +++ b/libexec/mknetid/hash.c @@ -0,0 +1,179 @@ +/* + * Copyright (c) 1995 + * Bill Paul <wpaul@ctr.columbia.edu>. 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 Bill Paul. + * 4. Neither the name of the author nor the names of any co-contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY Bill Paul 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 Bill Paul 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. + * + * $Id: hash.c,v 1.3 1996/06/24 22:48:50 wpaul Exp $ + */ + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sys/types.h> +#include "hash.h" + +#ifndef lint +static const char rcsid[] = "$Id: hash.c,v 1.3 1996/06/24 22:48:50 wpaul Exp $"; +#endif + + +/* + * This hash function is stolen directly from the + * Berkeley DB package. It already exists inside libc, but + * it's declared static which prevents us from calling it + * from here. + */ +/* + * OZ's original sdbm hash + */ +u_int32_t +hash(keyarg, len) + const void *keyarg; + register size_t len; +{ + register const u_char *key; + register size_t loop; + register u_int32_t h; + +#define HASHC h = *key++ + 65599 * h + + h = 0; + key = keyarg; + if (len > 0) { + loop = (len + 8 - 1) >> 3; + + switch (len & (8 - 1)) { + case 0: + do { + HASHC; + /* FALLTHROUGH */ + case 7: + HASHC; + /* FALLTHROUGH */ + case 6: + HASHC; + /* FALLTHROUGH */ + case 5: + HASHC; + /* FALLTHROUGH */ + case 4: + HASHC; + /* FALLTHROUGH */ + case 3: + HASHC; + /* FALLTHROUGH */ + case 2: + HASHC; + /* FALLTHROUGH */ + case 1: + HASHC; + } while (--loop); + } + } + return (h); +} + +/* + * Generate a hash value for a given key (character string). + * We mask off all but the lower 8 bits since our table array + * can only hole 256 elements. + */ +u_int32_t hashkey(key) + char *key; +{ + + if (key == NULL) + return (-1); + return(hash((void *)key, strlen(key)) & HASH_MASK); +} + +/* Find an entry in the hash table (may be hanging off a linked list). */ +struct grouplist *lookup(table, key) + struct member_entry *table[]; + char *key; +{ + struct member_entry *cur; + + cur = table[hashkey(key)]; + + while (cur) { + if (!strcmp(cur->key, key)) + return(cur->groups); + cur = cur->next; + } + + return(NULL); +} + +struct grouplist dummy = { 99999, NULL }; + +/* + * Store an group member entry and/or update its grouplist. + */ +void mstore (table, key, gid, dup) + struct member_entry *table[]; + char *key; + int gid; + int dup; +{ + struct member_entry *cur, *new; + struct grouplist *tmp; + u_int32_t i; + + i = hashkey(key); + cur = table[i]; + + if (!dup) { + tmp = (struct grouplist *)malloc(sizeof(struct grouplist)); + tmp->groupid = gid; + tmp->next = NULL; + } + + /* Check if all we have to do is insert a new groupname. */ + while (cur) { + if (!dup && !strcmp(cur->key, key)) { + tmp->next = cur->groups; + cur->groups = tmp; + return; + } + cur = cur->next; + } + + /* Didn't find a match -- add the whole mess to the table. */ + new = (struct member_entry *)malloc(sizeof(struct member_entry)); + new->key = strdup(key); + if (!dup) + new->groups = tmp; + else + new->groups = (struct grouplist *)&dummy; + new->next = table[i]; + table[i] = new; + + return; +} diff --git a/libexec/mknetid/hash.h b/libexec/mknetid/hash.h new file mode 100644 index 0000000..1023e3b --- /dev/null +++ b/libexec/mknetid/hash.h @@ -0,0 +1,54 @@ +/* + * Copyright (c) 1995 + * Bill Paul <wpaul@ctr.columbia.edu>. 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 Bill Paul. + * 4. Neither the name of the author nor the names of any co-contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY Bill Paul 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 Bill Paul 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. + * + * $Id: hash.h,v 1.3 1996/06/24 22:48:32 wpaul Exp $ + */ + +/* Groupit entry hung off a member_entry node. */ +struct grouplist { + gid_t groupid; + struct grouplist *next; +}; + +/* Entry in the cooked member list hash table. */ +struct member_entry { + char *key; /* username */ + struct grouplist *groups; + struct member_entry *next; +}; + +/* Table size (chosen arbitrarily). Not too big, not too small. */ +#define TABLESIZE 256 +#define HASH_MASK 0x000000FF + +extern void mstore __P(( struct member_entry ** , char *, int, int )); +extern struct grouplist *lookup __P(( struct member_entry **, char * )); + diff --git a/libexec/mknetid/mknetid.8 b/libexec/mknetid/mknetid.8 new file mode 100644 index 0000000..f246418 --- /dev/null +++ b/libexec/mknetid/mknetid.8 @@ -0,0 +1,141 @@ +.\" Copyright (c) 1995, 1996 +.\" Bill Paul <wpaul@ctr.columbia.edu>. 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 Bill Paul. +.\" 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 Bill Paul 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 Bill Paul 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. +.\" +.\" $Id: mknetid.8,v 1.2 1996/06/25 02:53:44 wpaul Exp $ +.\" +.Dd June 23, 1996 +.Dt MKNETID 8 +.Os +.Sh NAME +.Nm mknetid +.Nd "generate netid map data" +.Sh SYNOPSIS +.Nm mknetid +.Op Fl q +.Op Fl g Ar group_file +.Op Fl p Ar passwd_file +.Op Fl h Ar hosts_file +.Op Fl n Ar netid_file +.Op Fl d Ar domain +.Sh DESCRIPTION +.Nm Mknetid +processes the contents of the +.Xr group 5 , +.Xr passwd 5 , +.Xr hosts 5 and +.Xr netid 5 +files into the format used to generate the +.Pa netid.byname +NIS map. This map is used to hold credential information for both users +and hosts in a operating system independent format. +.Pp +The +.Nm mknetid +command checks for duplicate occurances of netids and filters +them out. +.Pp +The +.Nm mknetid +command prints its results on the standard output. It is usually called +only by +.Nm /var/yp/Makefile +when rebuilding the NIS maps. +.Pp +.Sh OPTIONS +The +.Nm mknetid +command supports the following options: +.Bl -tag -width flag +.It Fl q +Normally, +.Nm mknetid +prints a warning message when it encounters a duplicate netid. +This flag turns on 'quiet' mode, allowing the warnings to be +surpressed. Other error messages may still be generated. +.It Fl g Ar group-file +The +.Fl g +flag can be used to specify the location of the group information +file. The compiled-in default is +.Pa /etc/group . +.It Fl p Ar passwd-file +The +.Fl p +flag can be used to specify the location of the passwd information +file. The compiled-in default is +.Pa /etc/passwd . +.It Fl h Ar group-file +The +.Fl h +flag can be used to specify the location of the hosts database +file. The compiled-in default is +.Pa /etc/hosts . +.It Fl n Ar netid-file +The +.Fl n +flag can be used to specify the location of the netid information +file. The compiled-in default is +.Pa /etc/netid . +Note that no error is generated if the netid database can't be +found. The netid database is not likely to be present on most systems +until Secure RPC support is added to FreeBSD. +.It Fl d Ar domain +By default, the +.Nm mknetid +command uses the system domainname when generating netid records. If +the system domainnameis not set, the domain must be specified on the +command line with the +.Fl d +flag. If the domainname is set, the +.Fl d +flag may be used to override it. +.El +.Sh FILES +.Bl -tag -width Pa -compact +.It Pa /var/yp/Makefile +The Makefile that calls +.Nm yp_mkdb +and +.Nm mknetid +to build the NIS databases. +.It Pa /etc/group +The default group database file. +.It Pa /etc/passwd +The default passwd database file. +.It Pa /etc/hosts +The default hosts database file. +.It Pa /etc/netid +The default netid database file. +.El +.Sh SEE ALSO +.Xr yp 4 , +.Xr yp_mkdb 8 +.Sh AUTHOR +Bill Paul <wpaul@ctr.columbia.edu> diff --git a/libexec/mknetid/mknetid.c b/libexec/mknetid/mknetid.c new file mode 100644 index 0000000..ee306cd --- /dev/null +++ b/libexec/mknetid/mknetid.c @@ -0,0 +1,289 @@ +/* + * Copyright (c) 1995, 1996 + * Bill Paul <wpaul@ctr.columbia.edu>. 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 Bill Paul. + * 4. Neither the name of the author nor the names of any co-contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY Bill Paul 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 Bill Paul 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. + * + * netid map generator program + * + * Written by Bill Paul <wpaul@ctr.columbia.edu> + * Center for Telecommunications Research + * Columbia University, New York City + * + * $Id: mknetid.c,v 1.5 1996/06/24 22:48:15 wpaul Exp $ + */ + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <grp.h> +#include <pwd.h> +#include <netdb.h> +#include <err.h> +#include <rpc/rpc.h> +#include <rpcsvc/yp_prot.h> +#include <rpcsvc/ypclnt.h> +#include "hash.h" + +#ifndef lint +static const char rcsid[] = "$Id: mknetid.c,v 1.5 1996/06/24 22:48:15 wpaul Exp $"; +#endif + +#define LINSIZ 1024 +#define OPSYS "unix" + +/* Default location of group file. */ +char *groupfile = _PATH_GROUP; +/* Default location of master.passwd file. */ +char *passfile = _PATH_PASSWD; +/* Default location of hosts file. */ +char *hostsfile = _PATH_HOSTS; +/* Default location of netid file */ +char *netidfile = "/etc/netid"; + +/* + * Stored hash table of 'reverse' group member database + * which we will construct. + */ +struct member_entry *mtable[TABLESIZE]; + +/* + * Dupe table: used to keep track of entries so we don't + * print the same thing twice. + */ +struct member_entry *dtable[TABLESIZE]; + +extern struct group *_getgrent __P(( void )); +extern int _setgrent __P(( void )); +extern void _endgrent __P(( void )); +void usage(prog) +char *prog; +{ + fprintf (stderr,"usage: %s [-q] [-g group file] [-p passwd file] \ +[-h hosts file]\n\t\t\t[-d netid file] [-d domain]\n",prog); + exit(1); +} + +extern char *optarg; +extern FILE *_gr_fp; + +main(argc, argv) + int argc; + char *argv[]; +{ + FILE *gfp, *pfp, *hfp, *nfp; + char readbuf[LINSIZ]; + char writebuf[LINSIZ]; + struct group *gr; + struct grouplist *glist; + char *domain; + int ch; + gid_t i; + char *ptr, *pidptr, *gidptr, *hptr; + int quiet = 0; + + while ((ch = getopt(argc, argv, "g:p:h:n:d:q")) != EOF) { + switch(ch) { + case 'g': + groupfile = optarg; + break; + case 'p': + passfile = optarg; + break; + case 'h': + hostsfile = optarg; + break; + case 'n': + netidfile = optarg; + break; + case 'd': + domain = optarg; + break; + case 'q': + quiet++; + break; + default: + usage(argv[0]); + break; + } + } + + if (domain == NULL) { + if (yp_get_default_domain(&domain)) + errx(1, "no domain name specified and default \ +domain not set"); + } + + if ((gfp = fopen(groupfile, "r")) == NULL) { + err(1, "%s", groupfile); + } + + if ((pfp = fopen(passfile, "r")) == NULL) { + err(1, "%s", passfile); + } + + if ((hfp = fopen(hostsfile, "r")) == NULL) { + err(1, "%s", hostsfile); + } + + if ((nfp = fopen(netidfile, "r")) == NULL) { + /* netid is optional -- just continue */ + nfp = NULL; + } + + _gr_fp = gfp; + + /* Load all the group membership info into a hash table. */ + + _setgrent(); + while((gr = _getgrent()) != NULL) { + while(*gr->gr_mem) { + mstore(mtable, *gr->gr_mem, gr->gr_gid, 0); + gr->gr_mem++; + } + } + + fclose(gfp); + _endgrent(); + + /* + * Now parse the passwd database, spewing out the extra + * group information we just stored if necessary. + */ + while(fgets(readbuf, LINSIZ, pfp)) { + if ((ptr = strchr(readbuf, ':')) == NULL) + warnx("bad passwd file entry: %s", readbuf); + *ptr = '\0'; + ptr++; + if ((ptr = strchr(ptr, ':')) == NULL) + warnx("bad passwd file entry: %s", readbuf); + *ptr = '\0'; + ptr++; + pidptr = ptr; + if ((ptr = strchr(ptr, ':')) == NULL) + warnx("bad passwd file entry: %s", readbuf); + *ptr = '\0'; + ptr++; + gidptr = ptr; + if ((ptr = strchr(ptr, ':')) == NULL) + warnx("bad passwd file entry: %s", readbuf); + *ptr = '\0'; + i = atol(gidptr); + + snprintf(writebuf, sizeof(writebuf), "%s.%s@%s", OPSYS, + pidptr, domain); + + if (lookup(dtable, writebuf)) { + if (!quiet) + warnx("duplicate netid '%s.%s@%s' -- skipping", + OPSYS, pidptr, domain); + continue; + } else { + mstore(dtable, writebuf, 0, 1); + } + printf("%s.%s@%s\t\t%s:%s", OPSYS, pidptr, domain, pidptr, gidptr); + if ((glist = lookup(mtable, (char *)&readbuf)) != NULL) { + while(glist) { + if (glist->groupid != i) + printf(",%lu", glist->groupid); + glist = glist->next; + } + } + printf ("\n"); + } + + fclose(pfp); + + /* + * Now parse the hosts database (this part sucks). + */ + + while ((ptr = fgets(readbuf, LINSIZ, hfp))) { + if (*ptr == '#') + continue; + if (!(hptr = strpbrk(ptr, "#\n"))) + continue; + *hptr = '\0'; + if (!(hptr = strpbrk(ptr, " \t"))) + continue; + *hptr++ = '\0'; + ptr = hptr; + while (*ptr == ' ' || *ptr == '\t') + ptr++; + if (!(hptr = strpbrk(ptr, " \t"))) + continue; + *hptr++ = '\0'; + snprintf(writebuf, sizeof(writebuf), "%s.%s@%s", OPSYS, + ptr, domain); + if (lookup(dtable, (char *)&writebuf)) { + if (!quiet) + warnx("duplicate netid '%s' -- skipping", + writebuf); + continue; + } else { + mstore(dtable, (char *)&writebuf, 0, 1); + } + printf ("%s.%s@%s\t\t0:%s\n", OPSYS, ptr, domain, ptr); + } + + fclose(hfp); + + /* + * Lastly, copy out any extra information in the netid + * file. If it's not open, just ignore it: it's optional anyway. + */ + + if (nfp != NULL) { + while(fgets(readbuf, LINSIZ, nfp)) { + if (readbuf[0] == '#') + continue; + if ((ptr = strpbrk((char*)&readbuf, " \t")) == NULL) { + warnx("bad netid entry: '%s'", readbuf); + continue; + } + + writebuf[0] = *ptr; + *ptr = '\0'; + snprintf(writebuf, sizeof(readbuf), "%s.%s@%s", OPSYS, + ptr, domain); + if (lookup(dtable, (char *)&readbuf)) { + if (!quiet) + warnx("duplicate netid '%s' -- skipping", + readbuf); + continue; + } else { + mstore(dtable, (char *)&readbuf, 0, 1); + } + *ptr = writebuf[0]; + printf("%s",readbuf); + } + fclose(nfp); + } + + exit(0); +} diff --git a/libexec/mknetid/parse_group.c b/libexec/mknetid/parse_group.c new file mode 100644 index 0000000..9f6709c --- /dev/null +++ b/libexec/mknetid/parse_group.c @@ -0,0 +1,167 @@ +/* + * 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 const char sccsid[] = "@(#)getgrent.c 8.2 (Berkeley) 3/21/94"; +#endif /* LIBC_SCCS and not lint */ + +#ifndef lint +static const char rcsid[] = "$Id: parse_group.c,v 1.5 1996/06/24 00:12:09 wpaul Exp $"; +#endif + +/* + * This is a slightly modified chunk of getgrent(3). All the YP support + * and unneeded functions have been stripped out. + */ + +#include <sys/types.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <grp.h> + +FILE *_gr_fp; +static struct group _gr_group; +static int _gr_stayopen; +static int grscan(), start_gr(); + +#define MAXGRP 200 +static char *members[MAXGRP]; +#define MAXLINELENGTH 1024 +static char line[MAXLINELENGTH]; + +struct group * +_getgrent() +{ + if (!_gr_fp && !start_gr()) { + return NULL; + } + + + if (!grscan(0, 0, NULL)) + return(NULL); + return(&_gr_group); +} + +static int +start_gr() +{ + return 1; +} + +int +_setgroupent(stayopen) + int stayopen; +{ + if (!start_gr()) + return(0); + _gr_stayopen = stayopen; + return(1); +} + +int +_setgrent() +{ + return(_setgroupent(0)); +} + +void +_endgrent() +{ + 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; + for (;;) { + if (!fgets(line, sizeof(line), _gr_fp)) + return(0); + bp = line; + /* skip lines that are too big */ + if (!index(line, '\n')) { + int ch; + + while ((ch = getc(_gr_fp)) != '\n' && ch != EOF) + ; + continue; + } + if ((_gr_group.gr_name = strsep(&bp, ":\n")) == NULL) + break; + if (_gr_group.gr_name[0] == '+') + continue; + + if (search && name) { + if(strcmp(_gr_group.gr_name, name)) { + continue; + } + } + if ((_gr_group.gr_passwd = strsep(&bp, ":\n")) == NULL) + break;; + if (!(cp = strsep(&bp, ":\n"))) + continue; + _gr_group.gr_gid = atoi(cp); + if (search && name == NULL && _gr_group.gr_gid != gid) + continue; + cp = NULL; + for (m = _gr_group.gr_mem = members;; bp++) { + if (m == &members[MAXGRP - 1]) + break; + 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; + } + *m = NULL; + return(1); + } + /* NOTREACHED */ + return (0); +} |