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-rw-r--r--libc/gen/pw_scan.c122
-rw-r--r--libc/gen/pw_scan.h36
-rw-r--r--libutil/pw_util.c204
3 files changed, 362 insertions, 0 deletions
diff --git a/libc/gen/pw_scan.c b/libc/gen/pw_scan.c
new file mode 100644
index 0000000..3093ac2
--- /dev/null
+++ b/libc/gen/pw_scan.c
@@ -0,0 +1,122 @@
+/*-
+ * Copyright (c) 1990, 1993, 1994
+ * 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.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)pw_scan.c 8.3 (Berkeley) 4/2/94";
+#endif /* not lint */
+
+/*
+ * This module is used to "verify" password entries by chpass(1) and
+ * pwd_mkdb(8).
+ */
+
+#include <sys/param.h>
+
+#include <err.h>
+#include <fcntl.h>
+#include <pwd.h>
+#include <errno.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include "pw_scan.h"
+
+int
+pw_scan(bp, pw)
+ char *bp;
+ struct passwd *pw;
+{
+ long id;
+ int root;
+ char *p, *sh;
+
+ if (!(pw->pw_name = strsep(&bp, ":"))) /* login */
+ goto fmt;
+ root = !strcmp(pw->pw_name, "root");
+
+ if (!(pw->pw_passwd = strsep(&bp, ":"))) /* passwd */
+ goto fmt;
+
+ if (!(p = strsep(&bp, ":"))) /* uid */
+ goto fmt;
+ id = atol(p);
+ if (root && id) {
+ warnx("root uid should be 0");
+ return (0);
+ }
+ if (id > USHRT_MAX) {
+ warnx("%s > max uid value (%d)", p, USHRT_MAX);
+ return (0);
+ }
+ pw->pw_uid = id;
+
+ if (!(p = strsep(&bp, ":"))) /* gid */
+ goto fmt;
+ id = atol(p);
+ if (id > USHRT_MAX) {
+ warnx("%s > max gid value (%d)", p, USHRT_MAX);
+ return (0);
+ }
+ pw->pw_gid = id;
+
+ pw->pw_class = strsep(&bp, ":"); /* class */
+ if (!(p = strsep(&bp, ":"))) /* change */
+ goto fmt;
+ pw->pw_change = atol(p);
+ if (!(p = strsep(&bp, ":"))) /* expire */
+ goto fmt;
+ pw->pw_expire = atol(p);
+ pw->pw_gecos = strsep(&bp, ":"); /* gecos */
+ pw->pw_dir = strsep(&bp, ":"); /* directory */
+ if (!(pw->pw_shell = strsep(&bp, ":"))) /* shell */
+ goto fmt;
+
+ p = pw->pw_shell;
+ if (root && *p) /* empty == /bin/sh */
+ for (setusershell();;) {
+ if (!(sh = getusershell())) {
+ warnx("warning, unknown root shell");
+ break;
+ }
+ if (!strcmp(p, sh))
+ break;
+ }
+
+ if (p = strsep(&bp, ":")) { /* too many */
+fmt: warnx("corrupted entry");
+ return (0);
+ }
+ return (1);
+}
diff --git a/libc/gen/pw_scan.h b/libc/gen/pw_scan.h
new file mode 100644
index 0000000..d1d4bc1
--- /dev/null
+++ b/libc/gen/pw_scan.h
@@ -0,0 +1,36 @@
+/*-
+ * Copyright (c) 1994
+ * 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.
+ *
+ * @(#)pw_scan.h 8.1 (Berkeley) 4/1/94
+ */
+
+extern int pw_scan __P((char *, struct passwd *));
diff --git a/libutil/pw_util.c b/libutil/pw_util.c
new file mode 100644
index 0000000..9873f74
--- /dev/null
+++ b/libutil/pw_util.c
@@ -0,0 +1,204 @@
+/*-
+ * Copyright (c) 1990, 1993, 1994
+ * 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.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)pw_util.c 8.3 (Berkeley) 4/2/94";
+#endif /* not lint */
+
+/*
+ * This file is used by all the "password" programs; vipw(8), chpass(1),
+ * and passwd(1).
+ */
+
+#include <sys/param.h>
+#include <sys/time.h>
+#include <sys/resource.h>
+#include <sys/stat.h>
+#include <sys/wait.h>
+
+#include <err.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <paths.h>
+#include <pwd.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "pw_util.h"
+
+extern char *tempname;
+
+void
+pw_init()
+{
+ struct rlimit rlim;
+
+ /* Unlimited resource limits. */
+ rlim.rlim_cur = rlim.rlim_max = RLIM_INFINITY;
+ (void)setrlimit(RLIMIT_CPU, &rlim);
+ (void)setrlimit(RLIMIT_FSIZE, &rlim);
+ (void)setrlimit(RLIMIT_STACK, &rlim);
+ (void)setrlimit(RLIMIT_DATA, &rlim);
+ (void)setrlimit(RLIMIT_RSS, &rlim);
+
+ /* Don't drop core (not really necessary, but GP's). */
+ rlim.rlim_cur = rlim.rlim_max = 0;
+ (void)setrlimit(RLIMIT_CORE, &rlim);
+
+ /* Turn off signals. */
+ (void)signal(SIGALRM, SIG_IGN);
+ (void)signal(SIGHUP, SIG_IGN);
+ (void)signal(SIGINT, SIG_IGN);
+ (void)signal(SIGPIPE, SIG_IGN);
+ (void)signal(SIGQUIT, SIG_IGN);
+ (void)signal(SIGTERM, SIG_IGN);
+ (void)signal(SIGTSTP, SIG_IGN);
+ (void)signal(SIGTTOU, SIG_IGN);
+
+ /* Create with exact permissions. */
+ (void)umask(0);
+}
+
+static int lockfd;
+
+int
+pw_lock()
+{
+ /*
+ * If the master password file doesn't exist, the system is hosed.
+ * Might as well try to build one. Set the close-on-exec bit so
+ * 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_MASTERPASSWD, O_RDONLY, 0);
+ if (lockfd < 0 || fcntl(lockfd, F_SETFD, 1) == -1)
+ err(1, "%s", _PATH_MASTERPASSWD);
+ if (flock(lockfd, LOCK_EX|LOCK_NB))
+ errx(1, "the password db file is busy");
+ return (lockfd);
+}
+
+int
+pw_tmp()
+{
+ static char path[MAXPATHLEN] = _PATH_MASTERPASSWD;
+ int fd;
+ char *p;
+
+ if (p = strrchr(path, '/'))
+ ++p;
+ else
+ p = path;
+ strcpy(p, "pw.XXXXXX");
+ if ((fd = mkstemp(path)) == -1)
+ err(1, "%s", path);
+ tempname = path;
+ return (fd);
+}
+
+int
+pw_mkdb()
+{
+ int pstat;
+ pid_t pid;
+
+ warnx("rebuilding the database...");
+ (void)fflush(stderr);
+ if (!(pid = vfork())) {
+ execl(_PATH_PWD_MKDB, "pwd_mkdb", "-p", tempname, NULL);
+ pw_error(_PATH_PWD_MKDB, 1, 1);
+ }
+ pid = waitpid(pid, &pstat, 0);
+ if (pid == -1 || !WIFEXITED(pstat) || WEXITSTATUS(pstat) != 0)
+ return (0);
+ warnx("done");
+ return (1);
+}
+
+void
+pw_edit(notsetuid)
+ int notsetuid;
+{
+ int pstat;
+ pid_t pid;
+ char *p, *editor;
+
+ if (!(editor = getenv("EDITOR")))
+ editor = _PATH_VI;
+ if (p = strrchr(editor, '/'))
+ ++p;
+ else
+ p = editor;
+
+ if (!(pid = vfork())) {
+ if (notsetuid) {
+ (void)setgid(getgid());
+ (void)setuid(getuid());
+ }
+ execlp(editor, p, tempname, NULL);
+ _exit(1);
+ }
+ pid = waitpid(pid, (int *)&pstat, 0);
+ if (pid == -1 || !WIFEXITED(pstat) || WEXITSTATUS(pstat) != 0)
+ pw_error(editor, 1, 1);
+}
+
+void
+pw_prompt()
+{
+ int c;
+
+ (void)printf("re-edit the password file? [y]: ");
+ (void)fflush(stdout);
+ c = getchar();
+ if (c != EOF && c != '\n')
+ while (getchar() != '\n');
+ if (c == 'n')
+ pw_error(NULL, 0, 0);
+}
+
+void
+pw_error(name, err, eval)
+ char *name;
+ int err, eval;
+{
+ if (err)
+ warn(name);
+
+ warnx("%s: unchanged", _PATH_MASTERPASSWD);
+ (void)unlink(tempname);
+ exit(eval);
+}
generated by cgit v1.2.3-56-ge451 (git 2.39.0) at 2024-05-15 21:01:57 +0000