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/**
* Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
* SPDX-License-Identifier: Apache-2.0.
*/
#include <aws/common/encoding.h>
#include <aws/mqtt/mqtt.h>
#include <aws/testing/aws_test_harness.h>
struct utf8_example {
const char *name;
struct aws_byte_cursor text;
};
static struct utf8_example s_valid_mqtt_utf8_examples[] = {
{
.name = "1 letter",
.text = AWS_BYTE_CUR_INIT_FROM_STRING_LITERAL("a"),
},
{
.name = "Several ascii letters",
.text = AWS_BYTE_CUR_INIT_FROM_STRING_LITERAL("ascii word"),
},
{
.name = "empty string",
.text = AWS_BYTE_CUR_INIT_FROM_STRING_LITERAL(""),
},
{
.name = "2 byte codepoint",
.text = AWS_BYTE_CUR_INIT_FROM_STRING_LITERAL("\xC2\xA3"),
},
{
.name = "3 byte codepoint",
.text = AWS_BYTE_CUR_INIT_FROM_STRING_LITERAL("\xE2\x82\xAC"),
},
{
.name = "4 byte codepoint",
.text = AWS_BYTE_CUR_INIT_FROM_STRING_LITERAL("\xF0\x90\x8D\x88"),
},
{
.name = "A variety of different length codepoints",
.text = AWS_BYTE_CUR_INIT_FROM_STRING_LITERAL(
"\xF0\x90\x8D\x88\xE2\x82\xAC\xC2\xA3\x24\xC2\xA3\xE2\x82\xAC\xF0\x90\x8D\x88"),
},
{
.name = "UTF8 BOM",
.text = AWS_BYTE_CUR_INIT_FROM_STRING_LITERAL("\xEF\xBB\xBF"),
},
{
.name = "UTF8 BOM plus extra",
.text = AWS_BYTE_CUR_INIT_FROM_STRING_LITERAL("\xEF\xBB\xBF\x24\xC2\xA3"),
},
{
.name = "First possible 3 byte codepoint",
.text = AWS_BYTE_CUR_INIT_FROM_STRING_LITERAL("\xE0\xA0\x80"),
},
{
.name = "First possible 4 byte codepoint",
.text = AWS_BYTE_CUR_INIT_FROM_STRING_LITERAL("\xF0\x90\x80\x80"),
},
{
.name = "Last possible 2 byte codepoint",
.text = AWS_BYTE_CUR_INIT_FROM_STRING_LITERAL("\xDF\xBF"),
},
{
.name = "Last valid codepoint before prohibited range U+D800 - U+DFFF",
.text = AWS_BYTE_CUR_INIT_FROM_STRING_LITERAL("\xED\x9F\xBF"),
},
{
.name = "Next valid codepoint after prohibited range U+D800 - U+DFFF",
.text = AWS_BYTE_CUR_INIT_FROM_STRING_LITERAL("\xEE\x80\x80"),
},
{
.name = "Boundary condition",
.text = AWS_BYTE_CUR_INIT_FROM_STRING_LITERAL("\xEF\xBF\xBD"),
},
{
.name = "Boundary condition",
.text = AWS_BYTE_CUR_INIT_FROM_STRING_LITERAL("\xF4\x90\x80\x80"),
},
};
static struct utf8_example s_illegal_mqtt_utf8_examples[] = {
{
.name = "non character U+0000",
.text = AWS_BYTE_CUR_INIT_FROM_STRING_LITERAL("\x00"),
},
{
.name = "Codepoint in prohibited range U+0001 - U+001F (in the middle)",
.text = AWS_BYTE_CUR_INIT_FROM_STRING_LITERAL("\x04"),
},
{
.name = "Codepoint in prohibited range U+0001 - U+001F (boundary)",
.text = AWS_BYTE_CUR_INIT_FROM_STRING_LITERAL("\x1F"),
},
{
.name = "Codepoint in prohibited range U+007F - U+009F (min: U+7F)",
.text = AWS_BYTE_CUR_INIT_FROM_STRING_LITERAL("\x7F"),
},
{
.name = "Codepoint in prohibited range U+007F - U+009F (in the middle u+8F)",
.text = AWS_BYTE_CUR_INIT_FROM_STRING_LITERAL("\xC2\x8F"),
},
{
.name = "Codepoint in prohibited range U+007F - U+009F (boundary U+9F)",
.text = AWS_BYTE_CUR_INIT_FROM_STRING_LITERAL("\xC2\x9F"),
},
{
.name = "non character end with U+FFFF",
.text = AWS_BYTE_CUR_INIT_FROM_STRING_LITERAL("\xEF\xBF\xBF"),
},
{
.name = "non character end with U+FFFE",
.text = AWS_BYTE_CUR_INIT_FROM_STRING_LITERAL("\xF7\xBF\xBF\xBE"),
},
{
.name = "non character in U+FDD0 - U+FDEF (lower bound)",
.text = AWS_BYTE_CUR_INIT_FROM_STRING_LITERAL("\xEF\xB7\x90"),
},
{
.name = "non character in U+FDD0 - U+FDEF (in middle)",
.text = AWS_BYTE_CUR_INIT_FROM_STRING_LITERAL("\xEF\xB7\xA1"),
},
{
.name = "non character in U+FDD0 - U+FDEF (upper bound)",
.text = AWS_BYTE_CUR_INIT_FROM_STRING_LITERAL("\xEF\xB7\xAF"),
}};
static int s_mqtt_utf8_encoded_string_test(struct aws_allocator *allocator, void *ctx) {
(void)ctx;
/* Check the valid test cases */
for (size_t i = 0; i < AWS_ARRAY_SIZE(s_valid_mqtt_utf8_examples); ++i) {
struct utf8_example example = s_valid_mqtt_utf8_examples[i];
printf("valid example [%zu]: %s\n", i, example.name);
ASSERT_SUCCESS(aws_mqtt_validate_utf8_text(example.text));
}
/* Glue all the valid test cases together, they ought to pass */
struct aws_byte_buf all_good_text;
aws_byte_buf_init(&all_good_text, allocator, 1024);
for (size_t i = 0; i < AWS_ARRAY_SIZE(s_valid_mqtt_utf8_examples); ++i) {
aws_byte_buf_append_dynamic(&all_good_text, &s_valid_mqtt_utf8_examples[i].text);
}
ASSERT_SUCCESS(aws_mqtt_validate_utf8_text(aws_byte_cursor_from_buf(&all_good_text)));
aws_byte_buf_clean_up(&all_good_text);
/* Check the illegal test cases */
for (size_t i = 0; i < AWS_ARRAY_SIZE(s_illegal_mqtt_utf8_examples); ++i) {
struct utf8_example example = s_illegal_mqtt_utf8_examples[i];
printf("illegal example [%zu]: %s\n", i, example.name);
ASSERT_FAILS(aws_mqtt_validate_utf8_text(example.text));
}
return AWS_OP_SUCCESS;
}
AWS_TEST_CASE(mqtt_utf8_encoded_string_test, s_mqtt_utf8_encoded_string_test)
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