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/*
* upb - a minimalist implementation of protocol buffers.
*
* Copyright (c) 2011 Google Inc. See LICENSE for details.
*/
#include <stdio.h>
#include "upb/pb/varint.h"
#include "upb_test.h"
static void test_varint_decoder(upb_decoderet (*decoder)(const char*)) {
#define TEST(bytes, expected_val) {\
const char buf[] = bytes "\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff" ; \
upb_decoderet r = decoder(buf); \
ASSERT(r.val == expected_val); \
ASSERT(r.p == buf + sizeof(buf) - 16); /* - 1 for NULL */ \
}
TEST("\x00", 0ULL);
TEST("\x01", 1ULL);
TEST("\x81\x14", 0xa01ULL);
TEST("\x81\x03", 0x181ULL);
TEST("\x81\x83\x07", 0x1c181ULL);
TEST("\x81\x83\x87\x0f", 0x1e1c181ULL);
TEST("\x81\x83\x87\x8f\x1f", 0x1f1e1c181ULL);
TEST("\x81\x83\x87\x8f\x9f\x3f", 0x1f9f1e1c181ULL);
TEST("\x81\x83\x87\x8f\x9f\xbf\x7f", 0x1fdf9f1e1c181ULL);
TEST("\x81\x83\x87\x8f\x9f\xbf\xff\x01", 0x3fdf9f1e1c181ULL);
TEST("\x81\x83\x87\x8f\x9f\xbf\xff\x81\x03", 0x303fdf9f1e1c181ULL);
TEST("\x81\x83\x87\x8f\x9f\xbf\xff\x81\x83\x07", 0x8303fdf9f1e1c181ULL);
#undef TEST
char twelvebyte[16] = {0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x01, 0x01};
const char *twelvebyte_buf = twelvebyte;
// A varint that terminates before hitting the end of the provided buffer,
// but in too many bytes (11 instead of 10).
upb_decoderet r = decoder(twelvebyte_buf);
ASSERT(r.p == NULL);
}
#define TEST_VARINT_DECODER(decoder) \
/* Create non-inline versions for convenient inspection of assembly language \
* output. */ \
upb_decoderet _upb_vdecode_ ## decoder(const char *p) { \
return upb_vdecode_ ## decoder(p); \
} \
void test_ ## decoder() { \
printf("Testing varint decoder: " #decoder "..."); \
fflush(stdout); \
test_varint_decoder(&_upb_vdecode_ ## decoder); \
printf("ok.\n"); \
} \
TEST_VARINT_DECODER(branch32);
TEST_VARINT_DECODER(branch64);
TEST_VARINT_DECODER(check2_wright);
TEST_VARINT_DECODER(check2_massimino);
int main() {
test_branch32();
test_branch64();
test_check2_wright();
test_check2_massimino();
}
#if 0
static void test_get_v_uint32_t()
{
#define TEST(name, bytes, val) {\
upb_status status = UPB_STATUS_INIT; \
const uint8_t name[] = bytes; \
const uint8_t *name ## _buf = name; \
uint32_t name ## _val = 0; \
name ## _buf = upb_get_v_uint32_t(name, name + sizeof(name), &name ## _val, &status); \
ASSERT(upb_ok(&status)); \
ASSERT(name ## _val == val); \
ASSERT(name ## _buf == name + sizeof(name) - 1); /* - 1 for NULL */ \
/* Test NEED_MORE_DATA. */ \
if(sizeof(name) > 2) { \
name ## _buf = upb_get_v_uint32_t(name, name + sizeof(name) - 2, &name ## _val, &status); \
ASSERT(status.code == UPB_STATUS_NEED_MORE_DATA); \
} \
}
TEST(zero, "\x00", 0UL);
TEST(one, "\x01", 1UL);
TEST(twob, "\x81\x03", 0x181UL);
TEST(threeb, "\x81\x83\x07", 0x1c181UL);
TEST(fourb, "\x81\x83\x87\x0f", 0x1e1c181UL);
/* get_v_uint32_t truncates, so all the rest return the same thing. */
TEST(fiveb, "\x81\x83\x87\x8f\x1f", 0xf1e1c181UL);
TEST(sixb, "\x81\x83\x87\x8f\x9f\x3f", 0xf1e1c181UL);
TEST(sevenb, "\x81\x83\x87\x8f\x9f\xbf\x7f", 0xf1e1c181UL);
TEST(eightb, "\x81\x83\x87\x8f\x9f\xbf\xff\x01", 0xf1e1c181UL);
TEST(nineb, "\x81\x83\x87\x8f\x9f\xbf\xff\x81\x03", 0xf1e1c181UL);
TEST(tenb, "\x81\x83\x87\x8f\x9f\xbf\xff\x81\x83\x07", 0xf1e1c181UL);
#undef TEST
uint8_t twelvebyte[] = {0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x01, 0x01};
uint32_t twelvebyte_val = 0;
upb_status status = UPB_STATUS_INIT;
/* A varint that terminates before hitting the end of the provided buffer,
* but in too many bytes (11 instead of 10). */
upb_get_v_uint32_t(twelvebyte, twelvebyte + 12, &twelvebyte_val, &status);
ASSERT(status.code == UPB_ERROR_UNTERMINATED_VARINT);
/* A varint that terminates simultaneously with the end of the provided
* buffer, but in too many bytes (11 instead of 10). */
upb_reset(&status);
upb_get_v_uint32_t(twelvebyte, twelvebyte + 11, &twelvebyte_val, &status);
ASSERT(status.code == UPB_ERROR_UNTERMINATED_VARINT);
/* A varint whose buffer ends on exactly the byte where the varint must
* terminate, but the final byte does not terminate. The absolutely most
* correct return code here is UPB_ERROR_UNTERMINATED_VARINT, because we know
* by this point that the varint does not properly terminate. But we also
* allow a return value of UPB_STATUS_NEED_MORE_DATA here, because it does not
* compromise overall correctness -- clients who supply more data later will
* then receive a UPB_ERROR_UNTERMINATED_VARINT error; clients who have no
* more data to supply will (rightly) conclude that their protobuf is corrupt.
*/
upb_reset(&status);
upb_get_v_uint32_t(twelvebyte, twelvebyte + 10, &twelvebyte_val, &status);
ASSERT(status.code == UPB_ERROR_UNTERMINATED_VARINT ||
status.code == UPB_STATUS_NEED_MORE_DATA);
upb_reset(&status);
upb_get_v_uint32_t(twelvebyte, twelvebyte + 9, &twelvebyte_val, &status);
ASSERT(status.code == UPB_STATUS_NEED_MORE_DATA);
}
static void test_skip_v_uint64_t()
{
#define TEST(name, bytes) {\
upb_status status = UPB_STATUS_INIT; \
const uint8_t name[] = bytes; \
const uint8_t *name ## _buf = name; \
name ## _buf = upb_skip_v_uint64_t(name ## _buf, name + sizeof(name), &status); \
ASSERT(upb_ok(&status)); \
ASSERT(name ## _buf == name + sizeof(name) - 1); /* - 1 for NULL */ \
/* Test NEED_MORE_DATA. */ \
if(sizeof(name) > 2) { \
name ## _buf = upb_skip_v_uint64_t(name, name + sizeof(name) - 2, &status); \
ASSERT(status.code == UPB_STATUS_NEED_MORE_DATA); \
} \
}
TEST(zero, "\x00");
TEST(one, "\x01");
TEST(twob, "\x81\x03");
TEST(threeb, "\x81\x83\x07");
TEST(fourb, "\x81\x83\x87\x0f");
TEST(fiveb, "\x81\x83\x87\x8f\x1f");
TEST(sixb, "\x81\x83\x87\x8f\x9f\x3f");
TEST(sevenb, "\x81\x83\x87\x8f\x9f\xbf\x7f");
TEST(eightb, "\x81\x83\x87\x8f\x9f\xbf\xff\x01");
TEST(nineb, "\x81\x83\x87\x8f\x9f\xbf\xff\x81\x03");
TEST(tenb, "\x81\x83\x87\x8f\x9f\xbf\xff\x81\x83\x07");
#undef TEST
uint8_t twelvebyte[] = {0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x01, 0x01};
upb_status status = UPB_STATUS_INIT;
/* A varint that terminates before hitting the end of the provided buffer,
* but in too many bytes (11 instead of 10). */
upb_skip_v_uint64_t(twelvebyte, twelvebyte + 12, &status);
ASSERT(status.code == UPB_ERROR_UNTERMINATED_VARINT);
/* A varint that terminates simultaneously with the end of the provided
* buffer, but in too many bytes (11 instead of 10). */
upb_reset(&status);
upb_skip_v_uint64_t(twelvebyte, twelvebyte + 11, &status);
ASSERT(status.code == UPB_ERROR_UNTERMINATED_VARINT);
/* A varint whose buffer ends on exactly the byte where the varint must
* terminate, but the final byte does not terminate. The absolutely most
* correct return code here is UPB_ERROR_UNTERMINATED_VARINT, because we know
* by this point that the varint does not properly terminate. But we also
* allow a return value of UPB_STATUS_NEED_MORE_DATA here, because it does not
* compromise overall correctness -- clients who supply more data later will
* then receive a UPB_ERROR_UNTERMINATED_VARINT error; clients who have no
* more data to supply will (rightly) conclude that their protobuf is corrupt.
*/
upb_reset(&status);
upb_skip_v_uint64_t(twelvebyte, twelvebyte + 10, &status);
ASSERT(status.code == UPB_ERROR_UNTERMINATED_VARINT ||
status.code == UPB_STATUS_NEED_MORE_DATA);
upb_reset(&status);
upb_skip_v_uint64_t(twelvebyte, twelvebyte + 9, &status);
ASSERT(status.code == UPB_STATUS_NEED_MORE_DATA);
}
static void test_get_f_uint32_t()
{
#define TEST(name, bytes, val) {\
upb_status status = UPB_STATUS_INIT; \
const uint8_t name[] = bytes; \
const uint8_t *name ## _buf = name; \
uint32_t name ## _val = 0; \
name ## _buf = upb_get_f_uint32_t(name ## _buf, name + sizeof(name), &name ## _val, &status); \
ASSERT(upb_ok(&status)); \
ASSERT(name ## _val == val); \
ASSERT(name ## _buf == name + sizeof(name) - 1); /* - 1 for NULL */ \
}
TEST(zero, "\x00\x00\x00\x00", 0x0UL);
TEST(one, "\x01\x00\x00\x00", 0x1UL);
uint8_t threeb[] = {0x00, 0x00, 0x00};
uint32_t threeb_val;
upb_status status = UPB_STATUS_INIT;
upb_get_f_uint32_t(threeb, threeb + sizeof(threeb), &threeb_val, &status);
ASSERT(status.code == UPB_STATUS_NEED_MORE_DATA);
#undef TEST
}
#endif
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