mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-23 11:18:54 +00:00
912e378232
assignment of `l' in `gr_update' to the return value of snprintf. It claimed to have fixed the case where snprintf returned -1--in fact, it broke the entire routine. Not setting `l' here causes fileupdate() to invariably fail with EINVAL because it does its own check to assert that the parameter isn't -1.
172 lines
4.0 KiB
C
172 lines
4.0 KiB
C
/*-
|
|
* Copyright (C) 1996
|
|
* David L. Nugent. 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.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY DAVID L. NUGENT 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 DAVID L. NUGENT 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.
|
|
*/
|
|
|
|
#ifndef lint
|
|
static const char rcsid[] =
|
|
"$FreeBSD$";
|
|
#endif /* not lint */
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
#include <stdarg.h>
|
|
#include <sys/types.h>
|
|
#include <sys/stat.h>
|
|
#include <sys/param.h>
|
|
|
|
#include "pwupd.h"
|
|
|
|
static char * grpath = _PATH_PWD;
|
|
|
|
int
|
|
setgrdir(const char * dir)
|
|
{
|
|
if (dir == NULL)
|
|
return -1;
|
|
else {
|
|
char * d = malloc(strlen(dir)+1);
|
|
if (d == NULL)
|
|
return -1;
|
|
grpath = strcpy(d, dir);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
char *
|
|
getgrpath(const char * file)
|
|
{
|
|
static char pathbuf[MAXPATHLEN];
|
|
|
|
snprintf(pathbuf, sizeof pathbuf, "%s/%s", grpath, file);
|
|
return pathbuf;
|
|
}
|
|
|
|
int
|
|
grdb(char *arg,...)
|
|
{
|
|
/*
|
|
* This is a stub for now, but maybe eventually be functional
|
|
* if ever an indexed version of /etc/groups is implemented.
|
|
*/
|
|
arg=arg;
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
fmtgrentry(char **buf, int * buflen, struct group * grp, int type)
|
|
{
|
|
int i, l;
|
|
|
|
/*
|
|
* Since a group line is of arbitrary length,
|
|
* we need to calculate up-front just how long
|
|
* it will need to be...
|
|
*/
|
|
/* groupname : password : gid : */
|
|
l = strlen(grp->gr_name) + 1 + strlen(grp->gr_passwd) + 1 + 5 + 1;
|
|
/* group members + comma separator */
|
|
for (i = 0; grp->gr_mem[i] != NULL; i++) {
|
|
l += strlen(grp->gr_mem[i]) + 1;
|
|
}
|
|
l += 2; /* For newline & NUL */
|
|
if (extendline(buf, buflen, l) == -1)
|
|
l = -1;
|
|
else{
|
|
/*
|
|
* Now we can safely format
|
|
*/
|
|
if (type == PWF_STANDARD)
|
|
l = sprintf(*buf, "%s:*:%ld:", grp->gr_name, (long) grp->gr_gid);
|
|
else
|
|
l = sprintf(*buf, "%s:%s:%ld:", grp->gr_name, grp->gr_passwd, (long) grp->gr_gid);
|
|
|
|
/*
|
|
* List members
|
|
*/
|
|
for (i = 0; grp->gr_mem[i] != NULL; i++) {
|
|
l += sprintf(*buf + l, "%s%s", i ? "," : "", grp->gr_mem[i]);
|
|
}
|
|
|
|
(*buf)[l++] = '\n';
|
|
(*buf)[l] = '\0';
|
|
}
|
|
return l;
|
|
}
|
|
|
|
|
|
int
|
|
fmtgrent(char **buf, int * buflen, struct group * grp)
|
|
{
|
|
return fmtgrentry(buf, buflen, grp, PWF_STANDARD);
|
|
}
|
|
|
|
|
|
static int
|
|
gr_update(struct group * grp, char const * group, int mode)
|
|
{
|
|
int l;
|
|
char pfx[64];
|
|
int grbuflen = 0;
|
|
char *grbuf = NULL;
|
|
|
|
ENDGRENT();
|
|
l = snprintf(pfx, sizeof pfx, "%s:", group);
|
|
|
|
/*
|
|
* Update the group file
|
|
*/
|
|
if (grp != NULL && fmtgrentry(&grbuf, &grbuflen, grp, PWF_PASSWD) == -1)
|
|
l = -1;
|
|
else {
|
|
l = fileupdate(getgrpath(_GROUP), 0644, grbuf, pfx, l, mode);
|
|
if (l == 0)
|
|
l = grdb(NULL);
|
|
}
|
|
if (grbuf != NULL)
|
|
free(grbuf);
|
|
return l;
|
|
}
|
|
|
|
|
|
int
|
|
addgrent(struct group * grp)
|
|
{
|
|
return gr_update(grp, grp->gr_name, UPD_CREATE);
|
|
}
|
|
|
|
int
|
|
chggrent(char const * login, struct group * grp)
|
|
{
|
|
return gr_update(grp, login, UPD_REPLACE);
|
|
}
|
|
|
|
int
|
|
delgrent(struct group * grp)
|
|
{
|
|
return gr_update(NULL, grp->gr_name, UPD_DELETE);
|
|
}
|