udev: test udev_rule_parse_value()

1 files changed, 202 insertions, 0 deletions

diff --git a/src/test/test-udev-util.c b/src/test/test-udev-util.c
new file mode 100644
index 0000000000..c3efdab41a
--- /dev/null
+++ b/src/test/test-udev-util.c
@@ -0,0 +1,202 @@
+/* SPDX-License-Identifier: LGPL-2.1+ */
+
+#include <stdlib.h>
+#include <string.h>
+
+#include "macro.h"
+#include "string-util.h"
+#include "udev-util.h"
+
+static void test_udev_rule_parse_value_one(const char *in, const char *expected_value, int expected_retval) {
+        _cleanup_free_ char *str = NULL;
+        char *value = UINT_TO_PTR(0x12345678U);
+        char *endpos = UINT_TO_PTR(0x87654321U);
+
+        assert_se(str = strdup(in));
+        assert_se(udev_rule_parse_value(str, &value, &endpos) == expected_retval);
+        if (expected_retval < 0) {
+                /* not modified on failure */
+                assert_se(value == UINT_TO_PTR(0x12345678U));
+                assert_se(endpos == UINT_TO_PTR(0x87654321U));
+        } else {
+                assert_se(streq_ptr(value, expected_value));
+                assert_se(endpos == str + strlen(in));
+        }
+}
+
+static void test_parse_value(void) {
+        /* input: "valid operand"
+         * parsed: valid operand
+         * use the following command to help generate textual C strings:
+         * python3 -c 'import json; print(json.dumps(input()))' */
+        test_udev_rule_parse_value_one(
+                "\"valid operand\"",
+                "valid operand",
+                0
+        );
+}
+
+static void test_parse_value_with_backslashes(void) {
+        /* input: "va'l\'id\"op\"erand"
+         * parsed: va'l\'id"op"erand */
+        test_udev_rule_parse_value_one(
+                "\"va'l\\'id\\\"op\\\"erand\"",
+                "va'l\\'id\"op\"erand",
+                0
+        );
+}
+
+static void test_parse_value_no_quotes(void) {
+        test_udev_rule_parse_value_one(
+                "no quotes",
+                0,
+                -EINVAL
+        );
+}
+
+static void test_parse_value_noescape(void) {
+        test_udev_rule_parse_value_one(
+                "\"\\\\a\\b\\x\\y\"",
+                "\\\\a\\b\\x\\y",
+                0
+        );
+}
+
+static void test_parse_value_nul(void) {
+        test_udev_rule_parse_value_one(
+                "\"reject\0nul\"",
+                0,
+                -EINVAL
+        );
+}
+
+static void test_parse_value_escape_nothing(void) {
+        /* input: e"" */
+        test_udev_rule_parse_value_one(
+                "e\"\"",
+                "",
+                0
+        );
+}
+
+static void test_parse_value_escape_nothing2(void) {
+        /* input: e"1234" */
+        test_udev_rule_parse_value_one(
+                "e\"1234\"",
+                "1234",
+                0
+        );
+}
+
+static void test_parse_value_escape_double_quote(void) {
+        /* input: e"\"" */
+        test_udev_rule_parse_value_one(
+                "e\"\\\"\"",
+                "\"",
+                0
+        );
+}
+
+static void test_parse_value_escape_backslash(void) {
+        /* input: e"\ */
+        test_udev_rule_parse_value_one(
+                "e\"\\",
+                0,
+                -EINVAL
+        );
+        /* input: e"\" */
+        test_udev_rule_parse_value_one(
+                "e\"\\\"",
+                0,
+                -EINVAL
+        );
+        /* input: e"\\" */
+        test_udev_rule_parse_value_one(
+                "e\"\\\\\"",
+                "\\",
+                0
+        );
+        /* input: e"\\\" */
+        test_udev_rule_parse_value_one(
+                "e\"\\\\\\\"",
+                0,
+                -EINVAL
+        );
+        /* input: e"\\\"" */
+        test_udev_rule_parse_value_one(
+                "e\"\\\\\\\"\"",
+                "\\\"",
+                0
+        );
+        /* input: e"\\\\" */
+        test_udev_rule_parse_value_one(
+                "e\"\\\\\\\\\"",
+                "\\\\",
+                0
+        );
+}
+
+static void test_parse_value_newline(void) {
+        /* input: e"operand with newline\n" */
+        test_udev_rule_parse_value_one(
+                "e\"operand with newline\\n\"",
+                "operand with newline\n",
+                0
+        );
+}
+
+static void test_parse_value_escaped(void) {
+        /* input: e"single\rcharacter\t\aescape\bsequence" */
+        test_udev_rule_parse_value_one(
+                "e\"single\\rcharacter\\t\\aescape\\bsequence\"",
+                "single\rcharacter\t\aescape\bsequence",
+                0
+        );
+}
+
+static void test_parse_value_invalid_escape(void) {
+        /* input: e"reject\invalid escape sequence" */
+        test_udev_rule_parse_value_one(
+                "e\"reject\\invalid escape sequence",
+                0,
+                -EINVAL
+        );
+}
+
+static void test_parse_value_invalid_termination(void) {
+        /* input: e"\ */
+        test_udev_rule_parse_value_one(
+                "e\"\\",
+                0,
+                -EINVAL
+        );
+}
+
+static void test_parse_value_unicode(void) {
+        /* input: "s\u1d1c\u1d04\u029c \u1d1c\u0274\u026a\u1d04\u1d0f\u1d05\u1d07 \U0001d568\U0001d560\U0001d568" */
+        test_udev_rule_parse_value_one(
+                "e\"s\\u1d1c\\u1d04\\u029c \\u1d1c\\u0274\\u026a\\u1d04\\u1d0f\\u1d05\\u1d07 \\U0001d568\\U0001d560\\U0001d568\"",
+                "s\xe1\xb4\x9c\xe1\xb4\x84\xca\x9c \xe1\xb4\x9c\xc9\xb4\xc9\xaa\xe1\xb4\x84\xe1\xb4\x8f\xe1\xb4\x85\xe1\xb4\x87 \xf0\x9d\x95\xa8\xf0\x9d\x95\xa0\xf0\x9d\x95\xa8",
+                0
+        );
+}
+
+int main(int argc, char **argv) {
+        test_parse_value();
+        test_parse_value_with_backslashes();
+        test_parse_value_no_quotes();
+        test_parse_value_nul();
+        test_parse_value_noescape();
+
+        test_parse_value_escape_nothing();
+        test_parse_value_escape_nothing2();
+        test_parse_value_escape_double_quote();
+        test_parse_value_escape_backslash();
+        test_parse_value_newline();
+        test_parse_value_escaped();
+        test_parse_value_invalid_escape();
+        test_parse_value_invalid_termination();
+        test_parse_value_unicode();
+
+        return EXIT_SUCCESS;
+}