Author: bapt
Date: Fri Sep 30 23:36:28 2016
New Revision: 306540
URL: https://svnweb.freebsd.org/changeset/base/306540
Log:
tag import of dma 20160929
Added:
vendor/dma/20160929/
- copied from r306538, vendor/dma/dist/
Replaced:
vendor/dma/20160929/dma-mbox-create.c
- copied unchanged from r306539, vendor/dma/dist/dma-mbox-create.c
Copied: vendor/dma/20160929/dma-mbox-create.c (from r306539,
vendor/dma/dist/dma-mbox-create.c)
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ vendor/dma/20160929/dma-mbox-create.c Fri Sep 30 23:36:28 2016
(r306540, copy of r306539, vendor/dma/dist/dma-mbox-create.c)
@@ -0,0 +1,154 @@
+/*
+ * Copyright (c) 2010-2014, Simon Schubert <[email protected]>.
+ * Copyright (c) 2008 The DragonFly Project. All rights reserved.
+ *
+ * This code is derived from software contributed to The DragonFly Project
+ * by Simon Schubert <[email protected]>.
+ *
+ * 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. Neither the name of The DragonFly Project 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 COPYRIGHT HOLDERS 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
+ * COPYRIGHT HOLDERS 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.
+ */
+
+/*
+ * This binary is setuid root. Use extreme caution when touching
+ * user-supplied information. Keep the root window as small as possible.
+ */
+
+#include <sys/param.h>
+#include <sys/stat.h>
+
+#include <errno.h>
+#include <fcntl.h>
+#include <grp.h>
+#include <paths.h>
+#include <pwd.h>
+#include <stdio.h>
+#include <syslog.h>
+#include <unistd.h>
+
+#include "dma.h"
+
+
+static void
+logfail(int exitcode, const char *fmt, ...)
+{
+ int oerrno = errno;
+ va_list ap;
+ char outs[1024];
+
+ outs[0] = 0;
+ if (fmt != NULL) {
+ va_start(ap, fmt);
+ vsnprintf(outs, sizeof(outs), fmt, ap);
+ va_end(ap);
+ }
+
+ errno = oerrno;
+ if (*outs != 0)
+ syslog(LOG_ERR, errno ? "%s: %m" : "%s", outs);
+ else
+ syslog(LOG_ERR, errno ? "%m" : "unknown error");
+
+ exit(exitcode);
+}
+
+/*
+ * Create a mbox in /var/mail for a given user, or make sure
+ * the permissions are correct for dma.
+ */
+
+int
+main(int argc, char **argv)
+{
+ const char *user;
+ struct passwd *pw;
+ struct group *gr;
+ uid_t user_uid;
+ gid_t mail_gid;
+ int f, maildirfd;
+
+ openlog("dma-mbox-create", 0, LOG_MAIL);
+
+ errno = 0;
+ gr = getgrnam(DMA_GROUP);
+ if (!gr)
+ logfail(EX_CONFIG, "cannot find dma group `%s'", DMA_GROUP);
+
+ mail_gid = gr->gr_gid;
+
+ if (setgid(mail_gid) != 0)
+ logfail(EX_NOPERM, "cannot set gid to %d (%s)", mail_gid,
DMA_GROUP);
+ if (getegid() != mail_gid)
+ logfail(EX_NOPERM, "cannot set gid to %d (%s), still at %d",
mail_gid, DMA_GROUP, getegid());
+
+ /*
+ * We take exactly one argument: the username.
+ */
+ if (argc != 2) {
+ errno = 0;
+ logfail(EX_USAGE, "no arguments");
+ }
+ user = argv[1];
+
+ syslog(LOG_NOTICE, "creating mbox for `%s'", user);
+
+ /* the username may not contain a pathname separator */
+ if (strchr(user, '/')) {
+ errno = 0;
+ logfail(EX_DATAERR, "path separator in username `%s'", user);
+ exit(1);
+ }
+
+ /* verify the user exists */
+ errno = 0;
+ pw = getpwnam(user);
+ if (!pw)
+ logfail(EX_NOUSER, "cannot find user `%s'", user);
+
+ maildirfd = open(_PATH_MAILDIR, O_RDONLY);
+ if (maildirfd < 0)
+ logfail(EX_NOINPUT, "cannot open maildir %s", _PATH_MAILDIR);
+
+ user_uid = pw->pw_uid;
+
+ f = openat(maildirfd, user, O_RDONLY|O_CREAT|O_NOFOLLOW, 0600);
+ if (f < 0)
+ logfail(EX_NOINPUT, "cannot open mbox `%s'", user);
+
+ if (fchown(f, user_uid, mail_gid))
+ logfail(EX_OSERR, "cannot change owner of mbox `%s'", user);
+
+ if (fchmod(f, 0620))
+ logfail(EX_OSERR, "cannot change permissions of mbox `%s'",
+ user);
+
+ /* file should be present with the right owner and permissions */
+
+ syslog(LOG_NOTICE, "successfully created mbox for `%s'", user);
+
+ return (0);
+}
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