Qt/QML edition

dependencies/libarchive-3.4.2/libarchive/test/test_write_disk_secure744.c

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+/*-
+ * Copyright (c) 2003-2007,2016 Tim Kientzle
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``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 AUTHOR(S) 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 "test.h"
+__FBSDID("$FreeBSD$");
+
+#define UMASK 022
+
+/*
+ * Github Issue #744 describes a bug in the sandboxing code that
+ * causes very long pathnames to not get checked for symlinks.
+ */
+
+DEFINE_TEST(test_write_disk_secure744)
+{
+#if defined(_WIN32) && !defined(__CYGWIN__)
+	skipping("archive_write_disk security checks not supported on Windows");
+#else
+	struct archive *a;
+	struct archive_entry *ae;
+	size_t buff_size = 8192;
+	char *buff = malloc(buff_size);
+	char *p = buff;
+	int n = 0;
+	int t;
+
+	assert(buff != NULL);
+
+	/* Start with a known umask. */
+	assertUmask(UMASK);
+
+	/* Create an archive_write_disk object. */
+	assert((a = archive_write_disk_new()) != NULL);
+	archive_write_disk_set_options(a, ARCHIVE_EXTRACT_SECURE_SYMLINKS);
+
+	while (p + 500 < buff + buff_size) {
+		memset(p, 'x', 100);
+		p += 100;
+		p[0] = '\0';
+
+		buff[0] = ((n / 1000) % 10) + '0';
+		buff[1] = ((n / 100) % 10)+ '0';
+		buff[2] = ((n / 10) % 10)+ '0';
+		buff[3] = ((n / 1) % 10)+ '0';
+		buff[4] = '_';
+		++n;
+
+		/* Create a symlink pointing to the testworkdir */
+		assert((ae = archive_entry_new()) != NULL);
+		archive_entry_copy_pathname(ae, buff);
+		archive_entry_set_mode(ae, S_IFREG | 0777);
+		archive_entry_copy_symlink(ae, testworkdir);
+		assertEqualIntA(a, ARCHIVE_OK, archive_write_header(a, ae));
+		archive_entry_free(ae);
+
+		*p++ = '/';
+		sprintf(p, "target%d", n);
+
+		/* Try to create a file through the symlink, should fail. */
+		assert((ae = archive_entry_new()) != NULL);
+		archive_entry_copy_pathname(ae, buff);
+		archive_entry_set_mode(ae, S_IFDIR | 0777);
+
+		t = archive_write_header(a, ae);
+		archive_entry_free(ae);
+		failure("Attempt to create target%d via %d-character symlink should have failed", n, (int)strlen(buff));
+		if(!assertEqualInt(ARCHIVE_FAILED, t)) {
+			break;
+		}
+	}
+	archive_free(a);
+	free(buff);
+#endif
+}