1 files changed, 246 insertions, 0 deletions
diff --git a/lib/libc/locale/rune.c b/lib/libc/locale/rune.c
new file mode 100644
index 000000000000..59537c440a39
--- /dev/null
+++ b/lib/libc/locale/rune.c
@@ -0,0 +1,246 @@
+/*-
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
+ * Copyright 2014 Garrett D'Amore <garrett@damore.org>
+ * Copyright 2010 Nexenta Systems, Inc.  All rights reserved.
+ * Copyright (c) 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Paul Borman at Krystal Technologies.
+ *
+ * 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 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.
+ */
+
+#include "namespace.h"
+#include <arpa/inet.h>
+#include <errno.h>
+#include <runetype.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/mman.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include "un-namespace.h"
+
+#include "runefile.h"
+
+_RuneLocale *
+_Read_RuneMagi(const char *fname)
+{
+	char *fdata, *data;
+	void *lastp;
+	_FileRuneLocale *frl;
+	_RuneLocale *rl;
+	_FileRuneEntry *frr;
+	_RuneEntry *rr;
+	struct stat sb;
+	int x, saverr;
+	void *variable;
+	_FileRuneEntry *runetype_ext_ranges;
+	_FileRuneEntry *maplower_ext_ranges;
+	_FileRuneEntry *mapupper_ext_ranges;
+	int runetype_ext_len = 0;
+	int fd;
+
+	if ((fd = _open(fname, O_RDONLY | O_CLOEXEC)) < 0) {
+		errno = EINVAL;
+		return (NULL);
+	}
+
+	if (_fstat(fd, &sb) < 0) {
+		(void) _close(fd);
+		errno = EINVAL;
+		return (NULL);
+	}
+
+	if ((size_t)sb.st_size < sizeof (_FileRuneLocale)) {
+		(void) _close(fd);
+		errno = EINVAL;
+		return (NULL);
+	}
+
+
+	fdata = mmap(NULL, sb.st_size, PROT_READ, MAP_PRIVATE, fd, 0);
+	(void) _close(fd);
+	if (fdata == MAP_FAILED) {
+		errno = EINVAL;
+		return (NULL);
+	}
+
+	frl = (_FileRuneLocale *)(void *)fdata;
+	lastp = fdata + sb.st_size;
+
+	variable = frl + 1;
+
+	if (memcmp(frl->magic, _FILE_RUNE_MAGIC_1, sizeof (frl->magic))) {
+		goto invalid;
+	}
+
+	runetype_ext_ranges = (_FileRuneEntry *)variable;
+	variable = runetype_ext_ranges + frl->runetype_ext_nranges;
+	if (variable > lastp) {
+		goto invalid;
+	}
+
+	maplower_ext_ranges = (_FileRuneEntry *)variable;
+	variable = maplower_ext_ranges + frl->maplower_ext_nranges;
+	if (variable > lastp) {
+		goto invalid;
+	}
+
+	mapupper_ext_ranges = (_FileRuneEntry *)variable;
+	variable = mapupper_ext_ranges + frl->mapupper_ext_nranges;
+	if (variable > lastp) {
+		goto invalid;
+	}
+
+	frr = runetype_ext_ranges;
+	for (x = 0; x < frl->runetype_ext_nranges; ++x) {
+		uint32_t *types;
+
+		if (frr[x].map == 0) {
+			int len = frr[x].max - frr[x].min + 1;
+			types = variable;
+			variable = types + len;
+			runetype_ext_len += len;
+			if (variable > lastp) {
+				goto invalid;
+			}
+		}
+	}
+
+	if ((char *)variable + frl->variable_len > (char *)lastp) {
+		goto invalid;
+	}
+
+	/*
+	 * Convert from disk format to host format.
+	 */
+	data = malloc(sizeof(_RuneLocale) +
+	    (frl->runetype_ext_nranges + frl->maplower_ext_nranges +
+	    frl->mapupper_ext_nranges) * sizeof(_RuneEntry) +
+	    runetype_ext_len * sizeof(*rr->__types) + frl->variable_len);
+	if (data == NULL) {
+		saverr = errno;
+		munmap(fdata, sb.st_size);
+		errno = saverr;
+		return (NULL);
+	}
+
+	rl = (_RuneLocale *)data;
+	rl->__variable = rl + 1;
+
+	memcpy(rl->__magic, _RUNE_MAGIC_1, sizeof(rl->__magic));
+	memcpy(rl->__encoding, frl->encoding, sizeof(rl->__encoding));
+
+	rl->__variable_len = frl->variable_len;
+	rl->__runetype_ext.__nranges = frl->runetype_ext_nranges;
+	rl->__maplower_ext.__nranges = frl->maplower_ext_nranges;
+	rl->__mapupper_ext.__nranges = frl->mapupper_ext_nranges;
+
+	for (x = 0; x < _CACHED_RUNES; ++x) {
+		rl->__runetype[x] = frl->runetype[x];
+		rl->__maplower[x] = frl->maplower[x];
+		rl->__mapupper[x] = frl->mapupper[x];
+	}
+
+	rl->__runetype_ext.__ranges = (_RuneEntry *)rl->__variable;
+	rl->__variable = rl->__runetype_ext.__ranges +
+	    rl->__runetype_ext.__nranges;
+
+	rl->__maplower_ext.__ranges = (_RuneEntry *)rl->__variable;
+	rl->__variable = rl->__maplower_ext.__ranges +
+	    rl->__maplower_ext.__nranges;
+
+	rl->__mapupper_ext.__ranges = (_RuneEntry *)rl->__variable;
+	rl->__variable = rl->__mapupper_ext.__ranges +
+	    rl->__mapupper_ext.__nranges;
+
+	variable = mapupper_ext_ranges + frl->mapupper_ext_nranges;
+	frr = runetype_ext_ranges;
+	rr = rl->__runetype_ext.__ranges;
+	for (x = 0; x < rl->__runetype_ext.__nranges; ++x) {
+		uint32_t *types;
+
+		rr[x].__min = frr[x].min;
+		rr[x].__max = frr[x].max;
+		rr[x].__map = frr[x].map;
+		if (rr[x].__map == 0) {
+			int len = rr[x].__max - rr[x].__min + 1;
+			types = variable;
+			variable = types + len;
+			rr[x].__types = rl->__variable;
+			rl->__variable = rr[x].__types + len;
+			while (len-- > 0)
+				rr[x].__types[len] = types[len];
+		} else
+			rr[x].__types = NULL;
+	}
+
+	frr = maplower_ext_ranges;
+	rr = rl->__maplower_ext.__ranges;
+	for (x = 0; x < rl->__maplower_ext.__nranges; ++x) {
+		rr[x].__min = frr[x].min;
+		rr[x].__max = frr[x].max;
+		rr[x].__map = frr[x].map;
+	}
+
+	frr = mapupper_ext_ranges;
+	rr = rl->__mapupper_ext.__ranges;
+	for (x = 0; x < rl->__mapupper_ext.__nranges; ++x) {
+		rr[x].__min = frr[x].min;
+		rr[x].__max = frr[x].max;
+		rr[x].__map = frr[x].map;
+	}
+
+	memcpy(rl->__variable, variable, rl->__variable_len);
+	munmap(fdata, sb.st_size);
+
+	/*
+	 * Go out and zero pointers that should be zero.
+	 */
+	if (!rl->__variable_len)
+		rl->__variable = NULL;
+
+	if (!rl->__runetype_ext.__nranges)
+		rl->__runetype_ext.__ranges = NULL;
+
+	if (!rl->__maplower_ext.__nranges)
+		rl->__maplower_ext.__ranges = NULL;
+
+	if (!rl->__mapupper_ext.__nranges)
+		rl->__mapupper_ext.__ranges = NULL;
+
+	return (rl);
+
+invalid:
+	munmap(fdata, sb.st_size);
+	errno = EINVAL;
+	return (NULL);
+}