* Updated Thu Oct 12 09:56:55 1995 by faith@cs.unc.edu with security
* patches from Zefram <A.Main@dcs.warwick.ac.uk>
*
+ * Updated Thu Nov 9 21:58:53 1995 by Martin Schulze
+ * <joey@finlandia.infodrom.north.de>. Support for vigr.
+ *
+ * Martin Schulze's patches adapted to Util-Linux by Nicolai Langfeldt.
*/
#ifndef lint
#ifndef lint
/*static char sccsid[] = "from: @(#)vipw.c 5.16 (Berkeley) 3/3/91";*/
-static char rcsid[] = "$Id: vipw.c,v 1.4 1995/10/12 14:46:36 faith Exp $";
+static char rcsid[] = "$Id: vipw.c,v 1.6 1997/07/06 00:12:23 aebr Exp $";
#endif /* not lint */
+static char version_string[] = "vipw 1.4";
+
#include <sys/types.h>
#include <sys/stat.h>
#include <pwd.h>
#include <paths.h>
#include <unistd.h>
-#include "pathnames.h"
+#include "setpwnam.h"
+#define FILENAMELEN 67
-char *progname = "vipw";
-void pw_error __P((char *, int, int));
+char *progname;
+enum { VIPW, VIGR };
+int program;
+char orig_file[FILENAMELEN]; /* original file /etc/passwd or /etc/group */
+char tmp_file[FILENAMELEN]; /* tmp file */
+char tmptmp_file[FILENAMELEN]; /* very tmp file */
+void pw_error __P((char *, int, int));
+void
copyfile(from, to)
register int from, to;
{
while ((nr = read(from, buf, sizeof(buf))) > 0)
for (off = 0; off < nr; nr -= nw, off += nw)
if ((nw = write(to, buf + off, nr)) < 0)
- pw_error(_PATH_PTMP, 1, 1);
+ pw_error(tmp_file, 1, 1);
+
if (nr < 0)
- pw_error(_PATH_PASSWD, 1, 1);
+ pw_error(orig_file, 1, 1);
}
pw_lock()
{
int lockfd, fd, ret;
- char *p;
/*
* If the password file doesn't exist, the system is hosed.
* that users can't get at the encrypted passwords while editing.
* Open should allow flock'ing the file; see 4.4BSD. XXX
*/
- lockfd = open(_PATH_PASSWD, O_RDONLY, 0);
+ lockfd = open(orig_file, O_RDONLY, 0);
+
if (lockfd < 0) {
(void)fprintf(stderr, "%s: %s: %s\n",
- progname, _PATH_PASSWD, strerror(errno));
+ progname, orig_file, strerror(errno));
exit(1);
}
#if 0 /* flock()ing is superfluous here, with the ptmp/ptmptmp system. */
if (flock(lockfd, LOCK_EX|LOCK_NB)) {
(void)fprintf(stderr,
- "%s: the password file is busy.\n", progname);
+ "%s: the %s file is busy.\n", progname,
+ program == VIPW ? "password" : "group" );
exit(1);
}
#endif
- if ((fd = open(_PATH_PTMPTMP, O_WRONLY|O_CREAT, 0644)) == -1) {
- (void)fprintf(stderr,
- "%s: %s: %s\n", progname, _PATH_PTMPTMP, strerror(errno));
- exit(1);
+ if ((fd = open(tmptmp_file, O_WRONLY|O_CREAT, 0644)) == -1) {
+ (void)fprintf(stderr,
+ "%s: %s: %s\n", progname, tmptmp_file, strerror(errno));
+ exit(1);
}
- ret = link(_PATH_PTMPTMP, _PATH_PTMP);
- (void)unlink(_PATH_PTMPTMP);
+ ret = link(tmptmp_file, tmp_file);
+ (void)unlink(tmptmp_file);
if (ret == -1) {
if (errno == EEXIST)
(void)fprintf(stderr,
- "%s: the password file is busy\n", progname);
+ "%s: the %s file is busy\n", progname,
+ program == VIPW ? "password" : "group" );
else
(void)fprintf(stderr, "%s: can't link %s: %s\n", progname,
- _PATH_PTMP, strerror(errno));
+ tmp_file, strerror(errno));
exit(1);
}
copyfile(lockfd, fd);
void
pw_unlock()
{
- unlink(_PATH_PASSWD ".OLD");
- link(_PATH_PASSWD, _PATH_PASSWD ".OLD" );
- if (rename(_PATH_PTMP, _PATH_PASSWD) == -1) {
- (void)fprintf(stderr,
- "%s: can't unlock %s: %s (your changes are still in %s)\n",
- progname, _PATH_PASSWD, strerror(errno), _PATH_PTMP);
- exit(1);
- }
- (void)unlink(_PATH_PTMP);
+ char tmp[FILENAMELEN];
+
+ sprintf(tmp, "%s%s", orig_file, ".OLD");
+ unlink(tmp);
+ link(orig_file, tmp);
+ if (rename(tmp_file, orig_file) == -1) {
+ (void)fprintf(stderr,
+ "%s: can't unlock %s: %s (your changes are still in %s)\n",
+ progname, orig_file, strerror(errno), tmp_file);
+ exit(1);
+ }
+ (void)unlink(tmp_file);
}
(void)setgid(getgid());
(void)setuid(getuid());
}
- execlp(editor, p, _PATH_PTMP, NULL);
+ execlp(editor, p, tmp_file, NULL);
_exit(1);
}
for (;;) {
(void)fprintf(stderr, "%s\n", strerror(sverrno));
}
(void)fprintf(stderr,
- "%s: %s unchanged\n", progname, _PATH_PASSWD);
- (void)unlink(_PATH_PTMP);
+ "%s: %s unchanged\n", progname, orig_file);
+ (void)unlink(tmp_file);
exit(eval);
}
-main()
+int main(int argc, char *argv[])
{
- register int pfd, tfd;
- struct stat begin, end;
-
- pw_init();
- pw_lock();
-
- if (stat(_PATH_PTMP, &begin))
- pw_error(_PATH_PTMP, 1, 1);
- pw_edit(0);
- if (stat(_PATH_PTMP, &end))
- pw_error(_PATH_PTMP, 1, 1);
- if (begin.st_mtime == end.st_mtime) {
- (void)fprintf(stderr, "vipw: no changes made\n");
- pw_error((char *)NULL, 0, 0);
- }
- pw_unlock();
- exit(0);
+ struct stat begin, end;
+
+ bzero(tmp_file, FILENAMELEN);
+ progname = (rindex(argv[0], '/')) ? rindex(argv[0], '/') + 1 : argv[0];
+ if (!strcmp(progname, "vigr")) {
+ program = VIGR;
+ strncpy(orig_file, GROUP_FILE, FILENAMELEN-1);
+ strncpy(tmp_file, GTMP_FILE, FILENAMELEN-1);
+ strncpy(tmptmp_file, GTMPTMP_FILE, FILENAMELEN-1);
+ }
+ else {
+ program = VIPW;
+ strncpy(orig_file, PASSWD_FILE, FILENAMELEN-1);
+ strncpy(tmp_file, PTMP_FILE, FILENAMELEN-1);
+ strncpy(tmptmp_file, PTMPTMP_FILE, FILENAMELEN-1);
+ }
+
+ if ((argc > 1) &&
+ (!strcmp(argv[1], "-V") || !strcmp(argv[1], "--version"))) {
+ printf("%s\n", version_string);
+ exit(0);
+ }
+
+ pw_init();
+ pw_lock();
+
+ if (stat(tmp_file, &begin))
+ pw_error(tmp_file, 1, 1);
+ pw_edit(0);
+ if (stat(tmp_file, &end))
+ pw_error(tmp_file, 1, 1);
+ if (begin.st_mtime == end.st_mtime) {
+ (void)fprintf(stderr, "%s: no changes made\n", progname);
+ pw_error((char *)NULL, 0, 0);
+ }
+ pw_unlock();
+ exit(0);
}
projects / thirdparty / util-linux.git / blobdiff