Adding upstream version 1:2.3.21+dfsg1.upstream/1%2.3.21+dfsg1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 216 insertions, 0 deletions

diff --git a/src/lib-imap/test-imap-utf7.c b/src/lib-imap/test-imap-utf7.c
new file mode 100644
index 0000000..216eebf
--- /dev/null
+++ b/src/lib-imap/test-imap-utf7.c
@@ -0,0 +1,216 @@
+/* Copyright (c) 2008-2018 Dovecot authors, see the included COPYING file */
+
+#include "lib.h"
+#include "str.h"
+#include "unichar.h"
+#include "imap-utf7.h"
+#include "test-common.h"
+
+static void test_imap_utf7_by_example(void)
+{
+	static const struct test {
+		const char *utf8;
+		const char *mutf7;
+	} tests[] = {
+		{ "&&x&&", "&-&-x&-&-" },
+		{ "~peter/mail/\xe5\x8f\xb0\xe5\x8c\x97/\xe6\x97\xa5\xe6\x9c\xac\xe8\xaa\x9e",
+		  "~peter/mail/&U,BTFw-/&ZeVnLIqe-" },
+		{ "tiet\xc3\xa4&j\xc3\xa4&", "tiet&AOQ-&-j&AOQ-&-" }, /* & is always encoded as &- */
+		{ "p\xe4\xe4", NULL },
+		{ NULL, "&" },
+		{ NULL, "&Jjo" },
+		{ NULL, "&Jjo!" },
+		{ NULL, "&U,BTFw-&ZeVnLIqe-" } /* unnecessary shift */
+	};
+	string_t *dest, *dest2;
+	unsigned int i;
+
+	dest = t_str_new(256);
+	dest2 = t_str_new(256);
+
+	test_begin("imap mutf7 examples");
+	for (i = 0; i < N_ELEMENTS(tests); i++) {
+		str_truncate(dest, 0);
+		if (tests[i].utf8 != NULL) {
+			if (imap_utf8_to_utf7(tests[i].utf8, dest) < 0)
+				test_assert_idx(tests[i].mutf7 == NULL, i);
+			else
+				test_assert_idx(null_strcmp(tests[i].mutf7, str_c(dest)) == 0, i);
+		} else {
+			/* invalid mUTF-7 - test that escaping works */
+			str_truncate(dest2, 0);
+			imap_utf7_to_utf8_escaped(tests[i].mutf7, "%", dest);
+			imap_escaped_utf8_to_utf7(str_c(dest), '%', dest2);
+			test_assert_idx(strcmp(tests[i].mutf7, str_c(dest2)) == 0, i);
+		}
+		if (tests[i].mutf7 != NULL) {
+			str_truncate(dest, 0);
+			if (imap_utf7_to_utf8(tests[i].mutf7, dest) < 0)
+				test_assert_idx(tests[i].utf8 == NULL, i);
+			else
+				test_assert_idx(null_strcmp(tests[i].utf8, str_c(dest)) == 0, i);
+			test_assert_idx(imap_utf7_is_valid(tests[i].mutf7) != (tests[i].utf8 == NULL), i);
+		}
+	}
+
+	str_truncate(dest, 0);
+	imap_utf7_to_utf8_escaped(".foo%", "%.", dest);
+	test_assert_strcmp(str_c(dest), "%2efoo%25");
+
+	str_truncate(dest, 0);
+	test_assert(imap_escaped_utf8_to_utf7("%foo%2ebar", '%', dest) == 0);
+	test_assert_strcmp(str_c(dest), "%foo.bar");
+
+	test_end();
+}
+
+static void test_imap_utf7_ucs4_cases(void)
+{
+	string_t *src, *dest;
+	const char *orig_src;
+	unsigned int i, j;
+	unichar_t chr;
+
+	src = t_str_new(256);
+	dest = t_str_new(256);
+
+	test_begin("imap mutf7 ucs4 cases");
+	for (chr = 0xffff; chr <= 0x10010; chr++) T_BEGIN {
+		for (i = 1; i <= 10; i++) {
+			str_truncate(src, 0);
+			str_truncate(dest, 0);
+			for (j = 0; j < i; j++) {
+				if (j % 3 == 0)
+					str_append_c(src, 'x');
+				if (j % 5 == 0)
+					str_append_c(src, '&');
+				uni_ucs4_to_utf8_c(chr, src);
+			}
+
+			orig_src = t_strdup(str_c(src));
+			str_truncate(src, 0);
+
+			test_assert_idx(imap_utf8_to_utf7(orig_src, dest) == 0, chr*100+i);
+			test_assert_idx(imap_utf7_to_utf8(str_c(dest), src) == 0, chr*100+i);
+			test_assert_idx(strcmp(str_c(src), orig_src) == 0, chr+100+i);
+		}
+	} T_END;
+	test_end();
+}
+
+static const char mb64[64]="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+,";
+static void test_imap_utf7_non_utf16(void)
+{
+	string_t *dest, *dest2;
+	unsigned int i;
+
+	test_begin("imap mutf7 non-utf16");
+	dest = t_str_new(32);
+	dest2 = t_str_new(32);
+	for (i = 0; i <= 255; ++i) {
+		/* Invalid, code a single 8-bit octet */
+		const char csrc[] = {
+			'&',
+			mb64[i >> 2],
+			mb64[(i & 3) << 4],
+			'-',
+			'\0'
+		};
+		test_assert_idx(!imap_utf7_is_valid(csrc), i);
+
+		/* escaping can reverse the original string */
+		str_truncate(dest, 0);
+		str_truncate(dest2, 0);
+		imap_utf7_to_utf8_escaped(csrc, "%", dest);
+		imap_escaped_utf8_to_utf7(str_c(dest), '%', dest2);
+		test_assert_idx(strcmp(csrc, str_c(dest2)) == 0, i);
+	}
+	for (i = 0; i <= 255; ++i) {
+		/* Invalid, U+00E4 followed by a single octet */
+		const char csrc[] = {
+			'&',
+			mb64[                       (0x00 >> 2)],
+			mb64[((0x00 & 0x03) << 4) | (0xe4 >> 4)],
+			mb64[((0xe4 & 0x0f) << 2) | (   i >> 6)],
+			mb64[     i & 0x3f                     ],
+			'-',
+			'\0'
+		};
+		test_assert_idx(!imap_utf7_is_valid(csrc), i);
+
+		/* escaping can reverse the original string */
+		str_truncate(dest, 0);
+		str_truncate(dest2, 0);
+		imap_utf7_to_utf8_escaped(csrc, "%", dest);
+		imap_escaped_utf8_to_utf7(str_c(dest), '%', dest2);
+		test_assert_idx(strcmp(csrc, str_c(dest2)) == 0, i);
+	}
+	test_end();
+}
+
+static void test_imap_utf7_bad_ascii(void)
+{
+	string_t *dest;
+	char csrc[1+1];
+	unsigned int i;
+
+	dest = t_str_new(256);
+
+	test_begin("imap mutf7 bad ascii");
+	for (i = 1; i <= 0x7f; ++i) {
+		if (i == ' ')
+			i = 0x7f;
+		csrc[0] = i;
+		csrc[1] = '\0';
+		test_assert_idx(!imap_utf7_is_valid(csrc), i);
+		str_truncate(dest, 0);
+		test_assert_idx(imap_utf7_to_utf8(csrc, dest) < 0, i);
+	}
+	test_end();
+}
+
+static void test_imap_utf7_unnecessary(void)
+{
+	string_t *dest;
+	char csrc[1+3+1+1];
+	unsigned int i;
+
+	dest = t_str_new(256);
+
+	test_begin("imap mutf7 unnecessary");
+	for (i = 0x20; i < 0x7f; ++i) {
+		/* Create an invalid escaped encoding of a simple char or '&' */
+		csrc[0] = '&';
+		csrc[1] = mb64[                       (0x00 >> 2)];
+		csrc[2] = mb64[((0x00 & 0x03) << 4) | (   i >> 4)];
+		csrc[3] = mb64[((   i & 0x0f) << 2) |     0      ];
+		csrc[4] = '-';
+		csrc[5] = '\0';
+		test_assert_idx(!imap_utf7_is_valid(csrc), i);
+		str_truncate(dest, 0);
+		test_assert_idx(imap_utf7_to_utf8(csrc, dest) < 0, i);
+
+		/* All self-coding characters must self-code */
+		if (i == '&')
+			continue;
+		csrc[0] = i;
+		csrc[1] = '\0';
+		str_truncate(dest, 0);
+		test_assert_idx(imap_utf8_to_utf7(csrc, dest) >= 0, i);
+		test_assert_idx(strcmp(csrc, str_c(dest)) == 0, i);
+	}
+	test_end();
+}
+
+int main(void)
+{
+	static void (*const test_functions[])(void) = {
+		test_imap_utf7_by_example,
+		test_imap_utf7_ucs4_cases,
+		test_imap_utf7_non_utf16,
+		test_imap_utf7_bad_ascii,
+		test_imap_utf7_unnecessary,
+		NULL
+	};
+	return test_run(test_functions);
+}