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tests: Check ssh_make_padded_bignum_string.

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Signed-off-by: Simon Josefsson <simon@josefsson.org>
Signed-off-by: Jakub Jelen <jjelen@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
Reviewed-by: Sahana Prasad <sahana@redhat.com>
This commit is contained in:
Simon Josefsson
2023-08-20 20:51:57 +02:00
committed by Jakub Jelen
parent 799557384d
commit 16fd55b4b2
1 changed files with 48 additions and 5 deletions
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53
tests/unittests/torture_bignum.c
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@ -6,27 +6,48 @@
#include "libssh/bignum.h"
#include "libssh/string.h"
static void check_str (int n, ssh_string str)
static void check_str(int n, ssh_string str)
{
if (n > 0 && n <= 127) {
assert_int_equal(1, ntohl (str->size));
assert_int_equal(1, ntohl(str->size));
assert_int_equal(n, str->data[0]);
} else if (n > 127 && n <= 255) {
assert_int_equal(2, ntohl (str->size));
assert_int_equal(2, ntohl(str->size));
assert_int_equal(0, str->data[0]);
assert_int_equal(n, str->data[1]);
} else if (n > 255 && n <= 32767) {
assert_int_equal(2, ntohl (str->size));
assert_int_equal(2, ntohl(str->size));
assert_int_equal(n >> 8, str->data[0]);
assert_int_equal(n & 0xFF, str->data[1]);
} else {
assert_int_equal(3, ntohl (str->size));
assert_int_equal(3, ntohl(str->size));
assert_int_equal(n >> 16, str->data[0]);
assert_int_equal((n >> 8) & 0xFF, str->data[1]);
assert_int_equal(n & 0xFF, str->data[2]);
}
}
static void check_padded_str(int n, ssh_string str)
{
assert_int_equal(4, ntohl(str->size));
if (n > 0 && n <= 255) {
assert_int_equal(0, str->data[0]);
assert_int_equal(0, str->data[1]);
assert_int_equal(0, str->data[2]);
assert_int_equal(n, str->data[3]);
} else if (n > 255 && n <= 65535) {
assert_int_equal(0, str->data[0]);
assert_int_equal(0, str->data[1]);
assert_int_equal(n >> 8, str->data[2]);
assert_int_equal(n & 0xFF, str->data[3]);
} else {
assert_int_equal(0, str->data[0]);
assert_int_equal(n >> 16, str->data[1]);
assert_int_equal((n >> 8) & 0xFF, str->data[2]);
assert_int_equal(n & 0xFF, str->data[3]);
}
}
static void check_bignum(int n, const char *nstr)
{
bignum num = NULL, num2 = NULL;
@ -72,6 +93,28 @@ static void check_bignum(int n, const char *nstr)
assert_non_null(num3);
assert_int_equal(0, bignum_cmp(num, num3));
bignum_safe_free(num2);
/* ssh_make_padded_bignum_string */
str = ssh_make_padded_bignum_string(num, 4);
assert_non_null(str);
check_padded_str(n, str);
num2 = ssh_make_string_bn(str);
ssh_string_free(str);
assert_non_null(num2);
ssh_print_bignum("num2", num2);
assert_true(bignum_cmp(num, num2) == 0);
dec = bignum_bn2dec(num2);
assert_non_null(dec);
assert_string_equal(nstr, dec);
ssh_crypto_free(dec);
bignum_safe_free(num);
bignum_safe_free(num2);
bignum_safe_free(num3);