void
sshbuf_tests(void)
{
struct sshbuf *p1;
const u_char *cdp;
u_char *dp;
size_t sz;
int r;
TEST_START("allocate sshbuf");
p1 = sshbuf_new();
ASSERT_PTR_NE(p1, NULL);
TEST_DONE();
TEST_START("max size on fresh buffer");
ASSERT_SIZE_T_GT(sshbuf_max_size(p1), 0);
TEST_DONE();
TEST_START("available on fresh buffer");
ASSERT_SIZE_T_GT(sshbuf_avail(p1), 0);
TEST_DONE();
TEST_START("len = 0 on empty buffer");
ASSERT_SIZE_T_EQ(sshbuf_len(p1), 0);
TEST_DONE();
TEST_START("set valid max size");
ASSERT_INT_EQ(sshbuf_set_max_size(p1, 65536), 0);
ASSERT_SIZE_T_EQ(sshbuf_max_size(p1), 65536);
TEST_DONE();
TEST_START("available on limited buffer");
ASSERT_SIZE_T_EQ(sshbuf_avail(p1), 65536);
TEST_DONE();
TEST_START("free");
sshbuf_free(p1);
TEST_DONE();
TEST_START("consume on empty buffer");
p1 = sshbuf_new();
ASSERT_PTR_NE(p1, NULL);
ASSERT_INT_EQ(sshbuf_consume(p1, 0), 0);
ASSERT_INT_EQ(sshbuf_consume(p1, 1), SSH_ERR_MESSAGE_INCOMPLETE);
sshbuf_free(p1);
TEST_DONE();
TEST_START("consume_end on empty buffer");
p1 = sshbuf_new();
ASSERT_PTR_NE(p1, NULL);
ASSERT_INT_EQ(sshbuf_consume_end(p1, 0), 0);
ASSERT_INT_EQ(sshbuf_consume_end(p1, 1), SSH_ERR_MESSAGE_INCOMPLETE);
sshbuf_free(p1);
TEST_DONE();
TEST_START("reserve space");
p1 = sshbuf_new();
ASSERT_PTR_NE(p1, NULL);
r = sshbuf_reserve(p1, 1, &dp);
ASSERT_INT_EQ(r, 0);
ASSERT_PTR_NE(dp, NULL);
*dp = 0x11;
r = sshbuf_reserve(p1, 3, &dp);
ASSERT_INT_EQ(r, 0);
ASSERT_PTR_NE(dp, NULL);
*dp++ = 0x22;
*dp++ = 0x33;
*dp++ = 0x44;
TEST_DONE();
TEST_START("sshbuf_len on filled buffer");
ASSERT_SIZE_T_EQ(sshbuf_len(p1), 4);
TEST_DONE();
TEST_START("sshbuf_ptr on filled buffer");
cdp = sshbuf_ptr(p1);
ASSERT_PTR_NE(cdp, NULL);
ASSERT_U8_EQ(cdp[0], 0x11);
ASSERT_U8_EQ(cdp[1], 0x22);
ASSERT_U8_EQ(cdp[2], 0x33);
ASSERT_U8_EQ(cdp[3], 0x44);
TEST_DONE();
TEST_START("consume on filled buffer");
ASSERT_SIZE_T_EQ(sshbuf_len(p1), 4);
ASSERT_INT_EQ(sshbuf_consume(p1, 0), 0);
ASSERT_SIZE_T_EQ(sshbuf_len(p1), 4);
r = sshbuf_consume(p1, 64);
ASSERT_INT_EQ(r, SSH_ERR_MESSAGE_INCOMPLETE);
ASSERT_SIZE_T_EQ(sshbuf_len(p1), 4);
ASSERT_INT_EQ(sshbuf_consume(p1, 1), 0);
ASSERT_SIZE_T_EQ(sshbuf_len(p1), 3);
cdp = sshbuf_ptr(p1);
ASSERT_PTR_NE(p1, NULL);
ASSERT_U8_EQ(cdp[0], 0x22);
ASSERT_INT_EQ(sshbuf_consume(p1, 2), 0);
ASSERT_SIZE_T_EQ(sshbuf_len(p1), 1);
cdp = sshbuf_ptr(p1);
ASSERT_PTR_NE(p1, NULL);
ASSERT_U8_EQ(cdp[0], 0x44);
r = sshbuf_consume(p1, 2);
ASSERT_INT_EQ(r, SSH_ERR_MESSAGE_INCOMPLETE);
ASSERT_SIZE_T_EQ(sshbuf_len(p1), 1);
ASSERT_INT_EQ(sshbuf_consume(p1, 1), 0);
ASSERT_SIZE_T_EQ(sshbuf_len(p1), 0);
r = sshbuf_consume(p1, 1);
ASSERT_INT_EQ(r, SSH_ERR_MESSAGE_INCOMPLETE);
sshbuf_free(p1);
TEST_DONE();
TEST_START("consume_end on filled buffer");
p1 = sshbuf_new();
ASSERT_PTR_NE(p1, NULL);
r = sshbuf_reserve(p1, 4, &dp);
ASSERT_INT_EQ(r, 0);
ASSERT_PTR_NE(dp, NULL);
*dp++ = 0x11;
*dp++ = 0x22;
*dp++ = 0x33;
*dp++ = 0x44;
ASSERT_SIZE_T_EQ(sshbuf_len(p1), 4);
r = sshbuf_consume_end(p1, 5);
ASSERT_INT_EQ(r, SSH_ERR_MESSAGE_INCOMPLETE);
ASSERT_SIZE_T_EQ(sshbuf_len(p1), 4);
ASSERT_INT_EQ(sshbuf_consume_end(p1, 3), 0);
ASSERT_SIZE_T_EQ(sshbuf_len(p1), 1);
cdp = sshbuf_ptr(p1);
ASSERT_PTR_NE(cdp, NULL);
ASSERT_U8_EQ(*cdp, 0x11);
r = sshbuf_consume_end(p1, 2);
ASSERT_INT_EQ(r, SSH_ERR_MESSAGE_INCOMPLETE);
ASSERT_INT_EQ(sshbuf_consume_end(p1, 1), 0);
ASSERT_SIZE_T_EQ(sshbuf_len(p1), 0);
sshbuf_free(p1);
TEST_DONE();
TEST_START("fill limited buffer");
p1 = sshbuf_new();
ASSERT_PTR_NE(p1, NULL);
ASSERT_INT_EQ(sshbuf_set_max_size(p1, 1223), 0);
ASSERT_SIZE_T_EQ(sshbuf_max_size(p1), 1223);
ASSERT_SIZE_T_EQ(sshbuf_avail(p1), 1223);
r = sshbuf_reserve(p1, 1223, &dp);
ASSERT_INT_EQ(r, 0);
ASSERT_PTR_NE(dp, NULL);
memset(dp, 0xd7, 1223);
ASSERT_SIZE_T_EQ(sshbuf_len(p1), 1223);
ASSERT_SIZE_T_EQ(sshbuf_avail(p1), 0);
r = sshbuf_reserve(p1, 1, &dp);
ASSERT_INT_EQ(r, SSH_ERR_NO_BUFFER_SPACE);
ASSERT_PTR_EQ(dp, NULL);
TEST_DONE();
TEST_START("consume and force compaction");
ASSERT_INT_EQ(sshbuf_consume(p1, 223), 0);
ASSERT_SIZE_T_EQ(sshbuf_len(p1), 1000);
ASSERT_SIZE_T_EQ(sshbuf_avail(p1), 223);
r = sshbuf_reserve(p1, 224, &dp);
ASSERT_INT_EQ(r, SSH_ERR_NO_BUFFER_SPACE);
ASSERT_PTR_EQ(dp, NULL);
ASSERT_SIZE_T_EQ(sshbuf_len(p1), 1000);
ASSERT_SIZE_T_EQ(sshbuf_avail(p1), 223);
r = sshbuf_reserve(p1, 223, &dp);
ASSERT_INT_EQ(r, 0);
ASSERT_PTR_NE(dp, NULL);
memset(dp, 0x7d, 223);
cdp = sshbuf_ptr(p1);
ASSERT_PTR_NE(cdp, NULL);
ASSERT_MEM_FILLED_EQ(cdp, 0xd7, 1000);
ASSERT_MEM_FILLED_EQ(cdp + 1000, 0x7d, 223);
TEST_DONE();
TEST_START("resize full buffer");
r = sshbuf_set_max_size(p1, 1000);
ASSERT_INT_EQ(r, SSH_ERR_NO_BUFFER_SPACE);
sz = roundup(1223 + SSHBUF_SIZE_INC * 3, SSHBUF_SIZE_INC);
ASSERT_INT_EQ(sshbuf_set_max_size(p1, sz), 0);
ASSERT_SIZE_T_EQ(sshbuf_max_size(p1), sz);
ASSERT_SIZE_T_EQ(sshbuf_avail(p1), sz - 1223);
ASSERT_INT_EQ(sshbuf_len(p1), 1223);
TEST_DONE();
/* NB. uses sshbuf internals */
TEST_START("alloc chunking");
r = sshbuf_reserve(p1, 1, &dp);
ASSERT_INT_EQ(r, 0);
ASSERT_PTR_NE(dp, NULL);
*dp = 0xff;
cdp = sshbuf_ptr(p1);
ASSERT_PTR_NE(cdp, NULL);
ASSERT_MEM_FILLED_EQ(cdp, 0xd7, 1000);
ASSERT_MEM_FILLED_EQ(cdp + 1000, 0x7d, 223);
ASSERT_MEM_FILLED_EQ(cdp + 1223, 0xff, 1);
ASSERT_SIZE_T_EQ(sshbuf_alloc(p1) % SSHBUF_SIZE_INC, 0);
sshbuf_free(p1);
TEST_DONE();
TEST_START("reset buffer");
p1 = sshbuf_new();
ASSERT_PTR_NE(p1, NULL);
ASSERT_INT_EQ(sshbuf_set_max_size(p1, 1223), 0);
ASSERT_SIZE_T_EQ(sshbuf_max_size(p1), 1223);
r = sshbuf_reserve(p1, 1223, &dp);
ASSERT_INT_EQ(r, 0);
ASSERT_PTR_NE(dp, NULL);
memset(dp, 0xd7, 1223);
ASSERT_SIZE_T_EQ(sshbuf_len(p1), 1223);
sshbuf_reset(p1);
ASSERT_SIZE_T_EQ(sshbuf_max_size(p1), 1223);
ASSERT_SIZE_T_EQ(sshbuf_len(p1), 0);
ASSERT_SIZE_T_EQ(sshbuf_avail(p1), 1223);
sshbuf_free(p1);
TEST_DONE();
}
void
sshbuf_getput_crypto_tests(void)
{
struct sshbuf *p1;
const u_char *d;
size_t s;
BIGNUM *bn, *bn2, *bn_x, *bn_y;
/* This one has num_bits != num_bytes * 8 to test bignum1 encoding */
const char *hexbn1 = "0102030405060708090a0b0c0d0e0f10";
/* This one has MSB set to test bignum2 encoding negative-avoidance */
const char *hexbn2 = "f0e0d0c0b0a0908070605040302010007fff11";
u_char expbn1[] = {
0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10,
};
u_char expbn2[] = {
0xf0, 0xe0, 0xd0, 0xc0, 0xb0, 0xa0, 0x90, 0x80,
0x70, 0x60, 0x50, 0x40, 0x30, 0x20, 0x10, 0x00,
0x7f, 0xff, 0x11
};
int ec256_nid = NID_X9_62_prime256v1;
char *ec256_x = "0C828004839D0106AA59575216191357"
"34B451459DADB586677EF9DF55784999";
char *ec256_y = "4D196B50F0B4E94B3C73E3A9D4CD9DF2"
"C8F9A35E42BDD047550F69D80EC23CD4";
u_char expec256[] = {
0x04,
0x0c, 0x82, 0x80, 0x04, 0x83, 0x9d, 0x01, 0x06,
0xaa, 0x59, 0x57, 0x52, 0x16, 0x19, 0x13, 0x57,
0x34, 0xb4, 0x51, 0x45, 0x9d, 0xad, 0xb5, 0x86,
0x67, 0x7e, 0xf9, 0xdf, 0x55, 0x78, 0x49, 0x99,
0x4d, 0x19, 0x6b, 0x50, 0xf0, 0xb4, 0xe9, 0x4b,
0x3c, 0x73, 0xe3, 0xa9, 0xd4, 0xcd, 0x9d, 0xf2,
0xc8, 0xf9, 0xa3, 0x5e, 0x42, 0xbd, 0xd0, 0x47,
0x55, 0x0f, 0x69, 0xd8, 0x0e, 0xc2, 0x3c, 0xd4
};
EC_KEY *eck;
EC_POINT *ecp;
int r;
#define MKBN(b, bnn) \
do { \
bnn = NULL; \
ASSERT_INT_GT(BN_hex2bn(&bnn, b), 0); \
} while (0)
TEST_START("sshbuf_put_bignum1");
MKBN(hexbn1, bn);
p1 = sshbuf_new();
ASSERT_PTR_NE(p1, NULL);
ASSERT_INT_EQ(sshbuf_put_bignum1(p1, bn), 0);
ASSERT_SIZE_T_EQ(sshbuf_len(p1), sizeof(expbn1) + 2);
ASSERT_U16_EQ(PEEK_U16(sshbuf_ptr(p1)), (u_int16_t)BN_num_bits(bn));
ASSERT_MEM_EQ(sshbuf_ptr(p1) + 2, expbn1, sizeof(expbn1));
BN_free(bn);
sshbuf_free(p1);
TEST_DONE();
TEST_START("sshbuf_put_bignum1 limited");
MKBN(hexbn1, bn);
p1 = sshbuf_new();
ASSERT_PTR_NE(p1, NULL);
ASSERT_INT_EQ(sshbuf_set_max_size(p1, sizeof(expbn1) + 1), 0);
r = sshbuf_put_bignum1(p1, bn);
ASSERT_INT_EQ(r, SSH_ERR_NO_BUFFER_SPACE);
ASSERT_SIZE_T_EQ(sshbuf_len(p1), 0);
BN_free(bn);
sshbuf_free(p1);
TEST_DONE();
TEST_START("sshbuf_put_bignum1 bn2");
MKBN(hexbn2, bn);
p1 = sshbuf_new();
ASSERT_PTR_NE(p1, NULL);
ASSERT_INT_EQ(sshbuf_put_bignum1(p1, bn), 0);
ASSERT_SIZE_T_EQ(sshbuf_len(p1), sizeof(expbn2) + 2);
ASSERT_U16_EQ(PEEK_U16(sshbuf_ptr(p1)), (u_int16_t)BN_num_bits(bn));
ASSERT_MEM_EQ(sshbuf_ptr(p1) + 2, expbn2, sizeof(expbn2));
BN_free(bn);
sshbuf_free(p1);
TEST_DONE();
TEST_START("sshbuf_put_bignum1 bn2 limited");
MKBN(hexbn2, bn);
p1 = sshbuf_new();
ASSERT_PTR_NE(p1, NULL);
ASSERT_INT_EQ(sshbuf_set_max_size(p1, sizeof(expbn1) + 1), 0);
r = sshbuf_put_bignum1(p1, bn);
ASSERT_INT_EQ(r, SSH_ERR_NO_BUFFER_SPACE);
ASSERT_SIZE_T_EQ(sshbuf_len(p1), 0);
BN_free(bn);
sshbuf_free(p1);
TEST_DONE();
TEST_START("sshbuf_put_bignum2");
MKBN(hexbn1, bn);
p1 = sshbuf_new();
ASSERT_PTR_NE(p1, NULL);
ASSERT_INT_EQ(sshbuf_put_bignum2(p1, bn), 0);
ASSERT_SIZE_T_EQ(sshbuf_len(p1), sizeof(expbn1) + 4);
ASSERT_U32_EQ(PEEK_U32(sshbuf_ptr(p1)), (u_int32_t)BN_num_bytes(bn));
ASSERT_MEM_EQ(sshbuf_ptr(p1) + 4, expbn1, sizeof(expbn1));
BN_free(bn);
sshbuf_free(p1);
TEST_DONE();
TEST_START("sshbuf_put_bignum2 limited");
MKBN(hexbn1, bn);
p1 = sshbuf_new();
ASSERT_PTR_NE(p1, NULL);
ASSERT_INT_EQ(sshbuf_set_max_size(p1, sizeof(expbn1) + 3), 0);
r = sshbuf_put_bignum2(p1, bn);
ASSERT_INT_EQ(r, SSH_ERR_NO_BUFFER_SPACE);
ASSERT_SIZE_T_EQ(sshbuf_len(p1), 0);
BN_free(bn);
sshbuf_free(p1);
TEST_DONE();
TEST_START("sshbuf_put_bignum2 bn2");
MKBN(hexbn2, bn);
p1 = sshbuf_new();
ASSERT_PTR_NE(p1, NULL);
ASSERT_INT_EQ(sshbuf_put_bignum2(p1, bn), 0);
ASSERT_SIZE_T_EQ(sshbuf_len(p1), sizeof(expbn2) + 4 + 1); /* MSB */
ASSERT_U32_EQ(PEEK_U32(sshbuf_ptr(p1)), (u_int32_t)BN_num_bytes(bn) + 1);
ASSERT_U8_EQ(*(sshbuf_ptr(p1) + 4), 0x00);
ASSERT_MEM_EQ(sshbuf_ptr(p1) + 5, expbn2, sizeof(expbn2));
BN_free(bn);
sshbuf_free(p1);
TEST_DONE();
TEST_START("sshbuf_put_bignum2 bn2 limited");
MKBN(hexbn2, bn);
p1 = sshbuf_new();
ASSERT_PTR_NE(p1, NULL);
ASSERT_INT_EQ(sshbuf_set_max_size(p1, sizeof(expbn2) + 3), 0);
r = sshbuf_put_bignum2(p1, bn);
ASSERT_INT_EQ(r, SSH_ERR_NO_BUFFER_SPACE);
ASSERT_SIZE_T_EQ(sshbuf_len(p1), 0);
BN_free(bn);
sshbuf_free(p1);
TEST_DONE();
TEST_START("sshbuf_get_bignum1");
MKBN(hexbn1, bn);
p1 = sshbuf_new();
ASSERT_PTR_NE(p1, NULL);
ASSERT_INT_EQ(sshbuf_put_u16(p1, BN_num_bits(bn)), 0);
ASSERT_INT_EQ(sshbuf_put(p1, expbn1, sizeof(expbn1)), 0);
ASSERT_SIZE_T_EQ(sshbuf_len(p1), 2 + sizeof(expbn1));
ASSERT_INT_EQ(sshbuf_put_u16(p1, 0xd00f), 0);
bn2 = BN_new();
ASSERT_INT_EQ(sshbuf_get_bignum1(p1, bn2), 0);
ASSERT_BIGNUM_EQ(bn, bn2);
ASSERT_SIZE_T_EQ(sshbuf_len(p1), 2);
BN_free(bn);
BN_free(bn2);
sshbuf_free(p1);
TEST_DONE();
TEST_START("sshbuf_get_bignum1 truncated");
MKBN(hexbn1, bn);
p1 = sshbuf_new();
ASSERT_PTR_NE(p1, NULL);
ASSERT_INT_EQ(sshbuf_put_u16(p1, BN_num_bits(bn)), 0);
ASSERT_INT_EQ(sshbuf_put(p1, expbn1, sizeof(expbn1) - 1), 0);
ASSERT_SIZE_T_EQ(sshbuf_len(p1), 2 + sizeof(expbn1) - 1);
bn2 = BN_new();
r = sshbuf_get_bignum1(p1, bn2);
ASSERT_INT_EQ(r, SSH_ERR_MESSAGE_INCOMPLETE);
ASSERT_SIZE_T_EQ(sshbuf_len(p1), 2 + sizeof(expbn1) - 1);
BN_free(bn);
BN_free(bn2);
sshbuf_free(p1);
TEST_DONE();
TEST_START("sshbuf_get_bignum1 giant");
MKBN(hexbn1, bn);
p1 = sshbuf_new();
ASSERT_PTR_NE(p1, NULL);
ASSERT_INT_EQ(sshbuf_put_u16(p1, 0xffff), 0);
ASSERT_INT_EQ(sshbuf_reserve(p1, (0xffff + 7) / 8, NULL), 0);
ASSERT_SIZE_T_EQ(sshbuf_len(p1), 2 + ((0xffff + 7) / 8));
bn2 = BN_new();
r = sshbuf_get_bignum1(p1, bn2);
ASSERT_INT_EQ(r, SSH_ERR_BIGNUM_TOO_LARGE);
ASSERT_SIZE_T_EQ(sshbuf_len(p1), 2 + ((0xffff + 7) / 8));
BN_free(bn);
BN_free(bn2);
sshbuf_free(p1);
TEST_DONE();
TEST_START("sshbuf_get_bignum1 bn2");
MKBN(hexbn2, bn);
p1 = sshbuf_new();
ASSERT_PTR_NE(p1, NULL);
ASSERT_INT_EQ(sshbuf_put_u16(p1, BN_num_bits(bn)), 0);
ASSERT_INT_EQ(sshbuf_put(p1, expbn2, sizeof(expbn2)), 0);
ASSERT_SIZE_T_EQ(sshbuf_len(p1), 2 + sizeof(expbn2));
ASSERT_INT_EQ(sshbuf_put_u16(p1, 0xd00f), 0);
bn2 = BN_new();
ASSERT_INT_EQ(sshbuf_get_bignum1(p1, bn2), 0);
ASSERT_BIGNUM_EQ(bn, bn2);
ASSERT_SIZE_T_EQ(sshbuf_len(p1), 2);
BN_free(bn);
BN_free(bn2);
sshbuf_free(p1);
TEST_DONE();
TEST_START("sshbuf_get_bignum1 bn2 truncated");
MKBN(hexbn2, bn);
p1 = sshbuf_new();
ASSERT_PTR_NE(p1, NULL);
ASSERT_INT_EQ(sshbuf_put_u16(p1, BN_num_bits(bn)), 0);
ASSERT_INT_EQ(sshbuf_put(p1, expbn2, sizeof(expbn2) - 1), 0);
ASSERT_SIZE_T_EQ(sshbuf_len(p1), 2 + sizeof(expbn2) - 1);
bn2 = BN_new();
r = sshbuf_get_bignum1(p1, bn2);
ASSERT_INT_EQ(r, SSH_ERR_MESSAGE_INCOMPLETE);
ASSERT_SIZE_T_EQ(sshbuf_len(p1), 2 + sizeof(expbn2) - 1);
BN_free(bn);
BN_free(bn2);
sshbuf_free(p1);
TEST_DONE();
TEST_START("sshbuf_get_bignum2");
MKBN(hexbn1, bn);
p1 = sshbuf_new();
ASSERT_PTR_NE(p1, NULL);
ASSERT_INT_EQ(sshbuf_put_u32(p1, BN_num_bytes(bn)), 0);
ASSERT_INT_EQ(sshbuf_put(p1, expbn1, sizeof(expbn1)), 0);
ASSERT_SIZE_T_EQ(sshbuf_len(p1), 4 + sizeof(expbn1));
ASSERT_INT_EQ(sshbuf_put_u16(p1, 0xd00f), 0);
bn2 = BN_new();
ASSERT_INT_EQ(sshbuf_get_bignum2(p1, bn2), 0);
ASSERT_BIGNUM_EQ(bn, bn2);
ASSERT_SIZE_T_EQ(sshbuf_len(p1), 2);
BN_free(bn);
BN_free(bn2);
sshbuf_free(p1);
TEST_DONE();
TEST_START("sshbuf_get_bignum2 truncated");
MKBN(hexbn1, bn);
p1 = sshbuf_new();
ASSERT_PTR_NE(p1, NULL);
ASSERT_INT_EQ(sshbuf_put_u32(p1, BN_num_bytes(bn)), 0);
ASSERT_INT_EQ(sshbuf_put(p1, expbn1, sizeof(expbn1) - 1), 0);
bn2 = BN_new();
r = sshbuf_get_bignum2(p1, bn2);
ASSERT_INT_EQ(r, SSH_ERR_MESSAGE_INCOMPLETE);
ASSERT_SIZE_T_EQ(sshbuf_len(p1), sizeof(expbn1) + 3);
BN_free(bn);
BN_free(bn2);
sshbuf_free(p1);
TEST_DONE();
TEST_START("sshbuf_get_bignum2 giant");
MKBN(hexbn1, bn);
p1 = sshbuf_new();
ASSERT_PTR_NE(p1, NULL);
ASSERT_INT_EQ(sshbuf_put_u32(p1, 65536), 0);
ASSERT_INT_EQ(sshbuf_reserve(p1, 65536, NULL), 0);
bn2 = BN_new();
r = sshbuf_get_bignum2(p1, bn2);
ASSERT_INT_EQ(r, SSH_ERR_BIGNUM_TOO_LARGE);
ASSERT_SIZE_T_EQ(sshbuf_len(p1), 65536 + 4);
BN_free(bn);
BN_free(bn2);
sshbuf_free(p1);
TEST_DONE();
TEST_START("sshbuf_get_bignum2 bn2");
MKBN(hexbn2, bn);
p1 = sshbuf_new();
ASSERT_PTR_NE(p1, NULL);
ASSERT_INT_EQ(sshbuf_put_u32(p1, BN_num_bytes(bn) + 1), 0); /* MSB */
ASSERT_INT_EQ(sshbuf_put_u8(p1, 0x00), 0);
ASSERT_INT_EQ(sshbuf_put(p1, expbn2, sizeof(expbn2)), 0);
ASSERT_SIZE_T_EQ(sshbuf_len(p1), 4 + 1 + sizeof(expbn2));
ASSERT_INT_EQ(sshbuf_put_u16(p1, 0xd00f), 0);
bn2 = BN_new();
ASSERT_INT_EQ(sshbuf_get_bignum2(p1, bn2), 0);
ASSERT_BIGNUM_EQ(bn, bn2);
ASSERT_SIZE_T_EQ(sshbuf_len(p1), 2);
BN_free(bn);
BN_free(bn2);
sshbuf_free(p1);
TEST_DONE();
TEST_START("sshbuf_get_bignum2 bn2 truncated");
MKBN(hexbn2, bn);
p1 = sshbuf_new();
ASSERT_PTR_NE(p1, NULL);
ASSERT_INT_EQ(sshbuf_put_u32(p1, BN_num_bytes(bn) + 1), 0);
ASSERT_INT_EQ(sshbuf_put_u8(p1, 0x00), 0);
ASSERT_INT_EQ(sshbuf_put(p1, expbn2, sizeof(expbn2) - 1), 0);
bn2 = BN_new();
r = sshbuf_get_bignum2(p1, bn2);
ASSERT_INT_EQ(r, SSH_ERR_MESSAGE_INCOMPLETE);
ASSERT_SIZE_T_EQ(sshbuf_len(p1), sizeof(expbn2) + 1 + 4 - 1);
BN_free(bn);
BN_free(bn2);
sshbuf_free(p1);
TEST_DONE();
TEST_START("sshbuf_get_bignum2 bn2 negative");
MKBN(hexbn2, bn);
p1 = sshbuf_new();
ASSERT_PTR_NE(p1, NULL);
ASSERT_INT_EQ(sshbuf_put_u32(p1, BN_num_bytes(bn)), 0);
ASSERT_INT_EQ(sshbuf_put(p1, expbn2, sizeof(expbn2)), 0);
bn2 = BN_new();
r = sshbuf_get_bignum2(p1, bn2);
ASSERT_INT_EQ(r, SSH_ERR_BIGNUM_IS_NEGATIVE);
ASSERT_SIZE_T_EQ(sshbuf_len(p1), sizeof(expbn2) + 4);
BN_free(bn);
BN_free(bn2);
sshbuf_free(p1);
TEST_DONE();
TEST_START("sshbuf_put_ec");
eck = EC_KEY_new_by_curve_name(ec256_nid);
ASSERT_PTR_NE(eck, NULL);
ecp = EC_POINT_new(EC_KEY_get0_group(eck));
ASSERT_PTR_NE(ecp, NULL);
MKBN(ec256_x, bn_x);
MKBN(ec256_y, bn_y);
ASSERT_INT_EQ(EC_POINT_set_affine_coordinates_GFp(
EC_KEY_get0_group(eck), ecp, bn_x, bn_y, NULL), 1);
ASSERT_INT_EQ(EC_KEY_set_public_key(eck, ecp), 1);
EC_POINT_free(ecp);
p1 = sshbuf_new();
ASSERT_PTR_NE(p1, NULL);
ASSERT_INT_EQ(sshbuf_put_eckey(p1, eck), 0);
ASSERT_INT_EQ(sshbuf_get_string_direct(p1, &d, &s), 0);
ASSERT_SIZE_T_EQ(s, sizeof(expec256));
ASSERT_MEM_EQ(d, expec256, sizeof(expec256));
sshbuf_free(p1);
EC_KEY_free(eck);
TEST_DONE();
TEST_START("sshbuf_get_ec");
eck = EC_KEY_new_by_curve_name(ec256_nid);
ASSERT_PTR_NE(eck, NULL);
p1 = sshbuf_new();
ASSERT_PTR_NE(p1, NULL);
ASSERT_INT_EQ(sshbuf_put_string(p1, expec256, sizeof(expec256)), 0);
ASSERT_SIZE_T_EQ(sshbuf_len(p1), sizeof(expec256) + 4);
ASSERT_INT_EQ(sshbuf_put_u8(p1, 0x00), 0);
ASSERT_INT_EQ(sshbuf_get_eckey(p1, eck), 0);
bn_x = BN_new();
bn_y = BN_new();
ASSERT_PTR_NE(bn_x, NULL);
ASSERT_PTR_NE(bn_y, NULL);
ASSERT_INT_EQ(EC_POINT_get_affine_coordinates_GFp(
EC_KEY_get0_group(eck), EC_KEY_get0_public_key(eck),
bn_x, bn_y, NULL), 1);
MKBN(ec256_x, bn);
MKBN(ec256_y, bn2);
ASSERT_INT_EQ(BN_cmp(bn_x, bn), 0);
ASSERT_INT_EQ(BN_cmp(bn_y, bn2), 0);
ASSERT_SIZE_T_EQ(sshbuf_len(p1), 1);
sshbuf_free(p1);
EC_KEY_free(eck);
BN_free(bn_x);
BN_free(bn_y);
BN_free(bn);
BN_free(bn2);
TEST_DONE();
}
void
sshbuf_misc_tests(void)
{
struct sshbuf *p1;
char tmp[512], *p;
FILE *out;
size_t sz;
TEST_START("sshbuf_dump");
out = tmpfile();
ASSERT_PTR_NE(out, NULL);
p1 = sshbuf_new();
ASSERT_PTR_NE(p1, NULL);
ASSERT_INT_EQ(sshbuf_put_u32(p1, 0x12345678), 0);
sshbuf_dump(p1, out);
fflush(out);
rewind(out);
sz = fread(tmp, 1, sizeof(tmp), out);
ASSERT_INT_EQ(ferror(out), 0);
ASSERT_INT_NE(feof(out), 0);
ASSERT_SIZE_T_GT(sz, 0);
tmp[sz] = '\0';
ASSERT_PTR_NE(strstr(tmp, "12 34 56 78"), NULL);
fclose(out);
sshbuf_free(p1);
TEST_DONE();
TEST_START("sshbuf_dtob16");
p1 = sshbuf_new();
ASSERT_PTR_NE(p1, NULL);
ASSERT_INT_EQ(sshbuf_put_u32(p1, 0x12345678), 0);
p = sshbuf_dtob16(p1);
ASSERT_PTR_NE(p, NULL);
ASSERT_STRING_EQ(p, "12345678");
free(p);
sshbuf_free(p1);
TEST_DONE();
TEST_START("sshbuf_dtob64 len 1");
p1 = sshbuf_new();
ASSERT_PTR_NE(p1, NULL);
ASSERT_INT_EQ(sshbuf_put_u8(p1, 0x11), 0);
p = sshbuf_dtob64(p1);
ASSERT_PTR_NE(p, NULL);
ASSERT_STRING_EQ(p, "EQ==");
free(p);
sshbuf_free(p1);
TEST_DONE();
TEST_START("sshbuf_dtob64 len 2");
p1 = sshbuf_new();
ASSERT_PTR_NE(p1, NULL);
ASSERT_INT_EQ(sshbuf_put_u8(p1, 0x11), 0);
ASSERT_INT_EQ(sshbuf_put_u8(p1, 0x22), 0);
p = sshbuf_dtob64(p1);
ASSERT_PTR_NE(p, NULL);
ASSERT_STRING_EQ(p, "ESI=");
free(p);
sshbuf_free(p1);
TEST_DONE();
TEST_START("sshbuf_dtob64 len 3");
p1 = sshbuf_new();
ASSERT_PTR_NE(p1, NULL);
ASSERT_INT_EQ(sshbuf_put_u8(p1, 0x11), 0);
ASSERT_INT_EQ(sshbuf_put_u8(p1, 0x22), 0);
ASSERT_INT_EQ(sshbuf_put_u8(p1, 0x33), 0);
p = sshbuf_dtob64(p1);
ASSERT_PTR_NE(p, NULL);
ASSERT_STRING_EQ(p, "ESIz");
free(p);
sshbuf_free(p1);
TEST_DONE();
TEST_START("sshbuf_dtob64 len 8191");
p1 = sshbuf_new();
ASSERT_PTR_NE(p1, NULL);
ASSERT_INT_EQ(sshbuf_reserve(p1, 8192, NULL), 0);
bzero(sshbuf_mutable_ptr(p1), 8192);
p = sshbuf_dtob64(p1);
ASSERT_PTR_NE(p, NULL);
ASSERT_SIZE_T_EQ(strlen(p), ((8191 + 2) / 3) * 4);
free(p);
sshbuf_free(p1);
TEST_DONE();
TEST_START("sshbuf_b64tod len 1");
p1 = sshbuf_new();
ASSERT_PTR_NE(p1, NULL);
ASSERT_INT_EQ(sshbuf_b64tod(p1, "0A=="), 0);
ASSERT_SIZE_T_EQ(sshbuf_len(p1), 1);
ASSERT_U8_EQ(*sshbuf_ptr(p1), 0xd0);
sshbuf_free(p1);
TEST_DONE();
TEST_START("sshbuf_b64tod len 2");
p1 = sshbuf_new();
ASSERT_PTR_NE(p1, NULL);
ASSERT_INT_EQ(sshbuf_b64tod(p1, "0A8="), 0);
ASSERT_SIZE_T_EQ(sshbuf_len(p1), 2);
ASSERT_U16_EQ(PEEK_U16(sshbuf_ptr(p1)), 0xd00f);
sshbuf_free(p1);
TEST_DONE();
TEST_START("sshbuf_b64tod len 4");
p1 = sshbuf_new();
ASSERT_PTR_NE(p1, NULL);
ASSERT_INT_EQ(sshbuf_b64tod(p1, "0A/QDw=="), 0);
ASSERT_SIZE_T_EQ(sshbuf_len(p1), 4);
ASSERT_U32_EQ(PEEK_U32(sshbuf_ptr(p1)), 0xd00fd00f);
sshbuf_free(p1);
TEST_DONE();
}
void
sshbuf_fuzz_tests(void)
{
struct sshbuf *p1;
u_char *dp;
size_t sz, sz2, i;
u_int32_t r;
int ret;
/* NB. uses sshbuf internals */
TEST_START("fuzz alloc/dealloc");
p1 = sshbuf_new();
ASSERT_INT_EQ(sshbuf_set_max_size(p1, 16 * 1024), 0);
ASSERT_PTR_NE(p1, NULL);
ASSERT_PTR_NE(sshbuf_ptr(p1), NULL);
ASSERT_MEM_ZERO_NE(sshbuf_ptr(p1), sshbuf_len(p1));
for (i = 0; i < NUM_FUZZ_TESTS; i++) {
r = arc4random_uniform(10);
if (r == 0) {
/* 10% chance: small reserve */
r = arc4random_uniform(10);
fuzz_reserve:
sz = sshbuf_avail(p1);
sz2 = sshbuf_len(p1);
ret = sshbuf_reserve(p1, r, &dp);
if (ret < 0) {
ASSERT_PTR_EQ(dp, NULL);
ASSERT_SIZE_T_LT(sz, r);
ASSERT_SIZE_T_EQ(sshbuf_avail(p1), sz);
ASSERT_SIZE_T_EQ(sshbuf_len(p1), sz2);
} else {
ASSERT_PTR_NE(dp, NULL);
ASSERT_SIZE_T_GE(sz, r);
ASSERT_SIZE_T_EQ(sshbuf_avail(p1), sz - r);
ASSERT_SIZE_T_EQ(sshbuf_len(p1), sz2 + r);
memset(dp, arc4random_uniform(255) + 1, r);
}
} else if (r < 3) {
/* 20% chance: big reserve */
r = arc4random_uniform(8 * 1024);
goto fuzz_reserve;
} else if (r == 3) {
/* 10% chance: small consume */
r = arc4random_uniform(10);
fuzz_consume:
sz = sshbuf_avail(p1);
sz2 = sshbuf_len(p1);
/* 50% change consume from end, otherwise start */
ret = ((arc4random() & 1) ?
sshbuf_consume : sshbuf_consume_end)(p1, r);
if (ret < 0) {
ASSERT_SIZE_T_LT(sz2, r);
ASSERT_SIZE_T_EQ(sshbuf_avail(p1), sz);
ASSERT_SIZE_T_EQ(sshbuf_len(p1), sz2);
} else {
ASSERT_SIZE_T_GE(sz2, r);
ASSERT_SIZE_T_EQ(sshbuf_avail(p1), sz + r);
ASSERT_SIZE_T_EQ(sshbuf_len(p1), sz2 - r);
}
} else if (r < 8) {
/* 40% chance: big consume */
r = arc4random_uniform(2 * 1024);
goto fuzz_consume;
} else if (r == 8) {
/* 10% chance: reset max size */
r = arc4random_uniform(16 * 1024);
sz = sshbuf_max_size(p1);
if (sshbuf_set_max_size(p1, r) < 0)
ASSERT_SIZE_T_EQ(sshbuf_max_size(p1), sz);
else
ASSERT_SIZE_T_EQ(sshbuf_max_size(p1), r);
} else {
if (arc4random_uniform(8192) == 0) {
/* tiny chance: new buffer */
ASSERT_PTR_NE(sshbuf_ptr(p1), NULL);
ASSERT_MEM_ZERO_NE(sshbuf_ptr(p1), sshbuf_len(p1));
sshbuf_free(p1);
p1 = sshbuf_new();
ASSERT_PTR_NE(p1, NULL);
ASSERT_INT_EQ(sshbuf_set_max_size(p1,
16 * 1024), 0);
} else {
/* Almost 10%: giant reserve */
/* use arc4random_buf for r > 2^32 on 64 bit */
arc4random_buf(&r, sizeof(r));
while (r < SSHBUF_SIZE_MAX / 2) {
r <<= 1;
r |= arc4random() & 1;
}
goto fuzz_reserve;
}
}
ASSERT_PTR_NE(sshbuf_ptr(p1), NULL);
ASSERT_SIZE_T_LE(sshbuf_max_size(p1), 16 * 1024);
}
ASSERT_PTR_NE(sshbuf_ptr(p1), NULL);
ASSERT_MEM_ZERO_NE(sshbuf_ptr(p1), sshbuf_len(p1));
sshbuf_free(p1);
TEST_DONE();
}