net/freerdp: fix build on FreeBSD 11.x

Apparently this hadn't been caught in my test matrix -- it seems that later
versions of FreeBSD have a getmntent() definition that masked this error.

mntent_compat.c has been adopted from devel/fam, though a better solution
should be sought out going into the future.

Approved by:	koobs (mentor, implicit, just-fix-it)
MFH:		2020Q2 (blanket: build fix)

net/freerdp/Makefile

@@ -171,5 +171,6 @@ post-patch:
 
 pre-configure:
 	${CP} ${FILESDIR}/mntent.h ${WRKSRC}/rdtk/include
+	${CP} ${FILESDIR}/mntent_compat.c ${WRKSRC}/channels/rdpdr/client
 
 .include <bsd.port.mk>

net/freerdp/files/mntent_compat.c

@@ -0,0 +1,174 @@
+/*
+ * Copyright (c) 1980, 1989, 1993, 1994
+ *      The Regents of the University of California.  All rights reserved.
+ * Copyright (c) 2001
+ *      David Rufino <daverufino@btinternet.com>
+ * Copyright (c) 2006
+ *      Stanislav Sedov <ssedov@mbsd.msk.ru>
+ *
+ * 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.
+ */
+
+/* most of this was ripped from the mount(3) source */
+
+#include "config.h"
+#include "mntent.h"
+#include <stdlib.h>
+#include <string.h>
+#include <sys/param.h>
+#include <sys/ucred.h>
+#include <sys/mount.h>
+
+static int pos = -1;
+static int mntsize = -1;
+static struct mntent _mntent;
+
+struct {
+	int		m_flag;
+	const char	*m_option;
+} mntoptions[] = {
+	{ MNT_ASYNC,		"async" },
+	{ MNT_NOATIME,		"noatime"},
+	{ MNT_NOEXEC,		"noexec"},
+	{ MNT_NOSUID,		"nosuid"},
+	{ MNT_NOSYMFOLLOW,	"nosymfollow"},
+	{ MNT_SYNCHRONOUS,	"sync"},
+	{ MNT_UNION,		"union"},
+	{ MNT_NOCLUSTERR,	"noclusterr"},
+	{ MNT_NOCLUSTERW,	"noclusterw"},
+	{ MNT_SUIDDIR,		"suiddir"},
+#ifdef MNT_SNAPSHOT
+	{ MNT_SNAPSHOT,		"snapshot"},
+#endif
+#ifdef MNT_MULTILABEL
+	{ MNT_MULTILABEL,	"multilabel"},
+#endif
+#ifdef MNT_ACLS
+	{ MNT_ACLS,		"acls"},
+#endif
+#ifdef MNT_NODEV
+	{ MNT_NODEV,		"nodev"},
+#endif
+};
+
+#define N_OPTS (sizeof(mntoptions) / sizeof(*mntoptions))
+
+char *
+hasmntopt (const struct mntent *mnt, const char *option)
+{
+	int found;
+	char *opt, *optbuf;
+
+	optbuf = strdup(mnt->mnt_opts);
+	found = 0;
+	for (opt = optbuf; (opt = strtok(opt, " ")) != NULL; opt = NULL) {
+		if (!strcasecmp(opt, option)) {
+			opt = opt - optbuf + mnt->mnt_opts;
+			free (optbuf);
+			return (opt);
+		}
+	}
+	free (optbuf);
+	return (NULL);
+}
+
+static char *
+catopt (char *s0, const char *s1)
+{
+	size_t newlen;
+	char *cp;
+
+	if (s1 == NULL || *s1 == '\0')
+		return s0;
+
+	if (s0 != NULL) {
+		newlen = strlen(s0) + strlen(s1) + 1 + 1;
+		if ((cp = (char *)realloc(s0, newlen)) == NULL)
+			return (NULL);
+
+		(void)strcat(cp, " ");
+		(void)strcat(cp, s1);
+	} else
+		cp = strdup(s1);
+
+	return (cp);
+}
+
+
+static char *
+flags2opts (int flags)
+{
+	char *res = NULL;
+	int i;
+
+	res = catopt(res, (flags & MNT_RDONLY) ? "ro" : "rw");
+
+	for (i = 0; i < N_OPTS; i++)
+		if (flags & mntoptions[i].m_flag)
+			res = catopt(res, mntoptions[i].m_option);
+	return res;
+}
+
+static struct mntent *
+statfs_to_mntent (struct statfs *mntbuf)
+{
+	static char opts_buf[40], *tmp;
+	
+	_mntent.mnt_fsname = mntbuf->f_mntfromname;
+	_mntent.mnt_dir = mntbuf->f_mntonname;
+	_mntent.mnt_type = mntbuf->f_fstypename;
+	tmp = flags2opts (mntbuf->f_flags);
+	if (tmp) {
+		opts_buf[sizeof(opts_buf) - 1] = '\0';
+		strncpy (opts_buf, tmp, sizeof(opts_buf)-1);
+		free (tmp);
+	} else {
+		*opts_buf = '\0';
+	}
+	_mntent.mnt_opts = opts_buf;	
+	_mntent.mnt_freq = _mntent.mnt_passno = 0;
+	return (&_mntent);
+}
+
+struct mntent *
+getmntent (FILE *fp)
+{
+	struct statfs *mntbuf;
+
+	if (pos == -1 || mntsize == -1)
+		mntsize = getmntinfo (&mntbuf, MNT_NOWAIT);
+
+	++pos;
+	if (pos == mntsize) {
+		pos = mntsize = -1;
+		return (NULL);
+	}
+
+	return (statfs_to_mntent (&mntbuf[pos]));
+}

net/freerdp/files/patch-channels_rdpdr_client_CMakeLists.txt

@@ -0,0 +1,10 @@
+--- channels/rdpdr/client/CMakeLists.txt.orig	2020-06-09 02:02:41 UTC
++++ channels/rdpdr/client/CMakeLists.txt
+@@ -24,6 +24,7 @@ set(${MODULE_PREFIX}_SRCS
+ 	irp.h
+ 	devman.c
+ 	devman.h
++	mntent_compat.c
+ 	rdpdr_main.c
+ 	rdpdr_main.h
+ 	rdpdr_capabilities.c