Merge branch 'printf-hook'

Adds a custom printf hook implementation as a fallback if neither the glibc
style hooks nor vstr is available. This can avoid the Vstr dependency on some
systems at the cost of slower and less complete printf functions.

1 files changed, 185 insertions, 0 deletions

diff --git a/src/libstrongswan/tests/test_printf.c b/src/libstrongswan/tests/test_printf.c
new file mode 100644
index 000000000..6c15fbea1
--- /dev/null
+++ b/src/libstrongswan/tests/test_printf.c
@@ -0,0 +1,185 @@
+/*
+ * Copyright (C) 2013 Martin Willi
+ * Copyright (C) 2013 revosec AG
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ */
+
+#include "test_suite.h"
+
+#include <errno.h>
+#include <math.h>
+
+static void verify(char *expected, char *format, ...)
+{
+	FILE *mem;
+	char buf[128];
+	va_list args;
+
+	va_start(args, format);
+	vsnprintf(buf, sizeof(buf), format, args);
+	ck_assert_str_eq(expected, buf);
+	va_end(args);
+
+	mem = fmemopen(buf, sizeof(buf), "w");
+	va_start(args, format);
+	vfprintf(mem, format, args);
+	va_end(args);
+	fclose(mem);
+	ck_assert_str_eq(expected, buf);
+}
+
+START_TEST(test_printf_strings)
+{
+	verify("a bc def", "%s %s %s", "a", "bc", "def");
+	verify("asd", "%.3s", "asdfg");
+	verify("asdf", "%.*s", (int)4, "asdfg");
+	verify("  asdf", "%6s", "asdf");
+	verify("  asdf", "%+6s", "asdf");
+	verify("asdf  ", "%-6s", "asdf");
+}
+END_TEST
+
+START_TEST(test_printf_err)
+{
+	errno = EINVAL;
+	verify((char*)strerror(errno), "%m");
+}
+END_TEST
+
+START_TEST(test_printf_unsigned)
+{
+	verify("1 23 456", "%u %lu %llu", 1, (u_long)23, (u_int64_t)456);
+	verify("65535 255", "%hu %hhu", 0x1ffff, 0x1ff);
+	verify("123456789", "%zu", (size_t)123456789);
+	verify("   12", "%5u", 12);
+	verify("12   ", "%-5u", 12);
+	verify("0012", "%04u", 12);
+	verify("0012", "%.4u", 12);
+}
+END_TEST
+
+START_TEST(test_printf_signed)
+{
+	verify("-1 -23 -456", "%d %ld %lld", -1, (long)-23, (int64_t)-456);
+	verify("-1 -1", "%hd %hhd", 0x1ffff, 0x1ff);
+	verify("123456789", "%zd", (ssize_t)123456789);
+	verify("  -12", "%5d", -12);
+	verify("-12  ", "%-5d", -12);
+	verify("-012", "%04d", -12);
+	verify("-0012", "%.4d", -12);
+}
+END_TEST
+
+START_TEST(test_printf_hex)
+{
+	verify("1 23 456", "%x %lx %llx", 1, (u_long)0x23, (u_int64_t)0x456);
+	verify("12abcdef 12ABCDEF", "%x %X", 0x12ABCDEF, 0x12ABCDEF);
+	verify("ffff ff", "%hx %hhx", 0x1ffff, 0x1ff);
+	verify("23456789", "%zx", (size_t)0x23456789);
+	verify("   ab", "%5x", 0xab);
+	verify("ab   ", "%-5x", 0xab);
+	verify("00ab", "%04x", 0xab);
+	verify("00ab", "%.4x", 0xab);
+}
+END_TEST
+
+START_TEST(test_printf_float)
+{
+	verify("0.000000", "%f", 0.0);
+	verify("1.000000", "%f", 1.0);
+	verify("12345.1", "%.1f", 12345.123);
+	verify("1", "%.0f", 1.0);
+	verify("1.3", "%.1f", 1.346789);
+	verify("1.23", "%.2f", 1.23456789);
+	verify("1.123", "%.3f", 1.123456789);
+	verify("1.0123", "%.4f", 1.0123456789);
+
+	verify("-1.000000", "%f", -1.0);
+	verify("-12345.1", "%.1f", -12345.123);
+	verify("-1", "%.0f", -1.0);
+	verify("-1.3", "%.1f", -1.3456789);
+	verify("-1.23", "%.2f", -1.23456789);
+	verify("-1.123", "%.3f", -1.123456789);
+	verify("-1.0123", "%.4f", -1.0123456789);
+
+	verify("  1.2", "%5.1f", 1.234);
+	verify("001.2", "%05.1f", 1.234);
+	verify("1.2  ", "%-5.1f", 1.234);
+
+	verify("12346", "%.0f", 12345.6789);
+	verify("2", "%.0f", 1.5);
+	verify("1", "%.0f", 1.49);
+	verify("1.2", "%.1f", 1.151);
+	verify("1.1", "%.1f", 1.149);
+	verify("1.13", "%.2f", 1.1251);
+	verify("1.12", "%.2f", 1.1249);
+	verify("1.124", "%.3f", 1.12351);
+	verify("1.123", "%.3f", 1.12349);
+
+	verify("-12346", "%.0f", -12345.6789);
+	verify("-2", "%.0f", -1.51);
+	verify("-1", "%.0f", -1.49);
+	verify("-1.2", "%.1f", -1.151);
+	verify("-1.1", "%.1f", -1.149);
+	verify("-1.13", "%.2f", -1.1251);
+	verify("-1.12", "%.2f", -1.1249);
+	verify("-1.124", "%.3f", -1.12351);
+	verify("-1.123", "%.3f", -1.12349);
+
+#ifdef NAN
+	verify("nan", "%.3f", NAN);
+	verify("  nan", "%5.3f", NAN);
+	verify("NAN", "%.3F", NAN);
+	verify("NAN  ", "%-5.3F", NAN);
+#endif
+#ifdef INFINITY
+	verify("inf", "%.3f", INFINITY);
+	verify("-inf", "%.4f", -INFINITY);
+	verify("INF", "%.3F", INFINITY);
+	verify("-INF", "%.4F", -INFINITY);
+#endif
+}
+END_TEST
+
+Suite *printf_suite_create()
+{
+	Suite *s;
+	TCase *tc;
+
+	s = suite_create("printf");
+
+	tc = tcase_create("strings");
+	tcase_add_test(tc, test_printf_strings);
+	suite_add_tcase(s, tc);
+
+	tc = tcase_create("err");
+	tcase_add_test(tc, test_printf_err);
+	suite_add_tcase(s, tc);
+
+	tc = tcase_create("unsiged");
+	tcase_add_test(tc, test_printf_unsigned);
+	suite_add_tcase(s, tc);
+
+	tc = tcase_create("siged");
+	tcase_add_test(tc, test_printf_signed);
+	suite_add_tcase(s, tc);
+
+	tc = tcase_create("hex");
+	tcase_add_test(tc, test_printf_hex);
+	suite_add_tcase(s, tc);
+
+	tc = tcase_create("float");
+	tcase_add_test(tc, test_printf_float);
+	suite_add_tcase(s, tc);
+
+	return s;
+}