static void
test_base16_decode(void)
{
const char expstr[] = "Test \x01\x09\x0a\x0f Hello";
const char *instrs[] = {
"546573742001090a0f2048656c6c6f",
"546573742001090A0F2048656C6C6F"
};
char outstr[sizeof(expstr)];
struct sol_str_slice slice;
ssize_t r, i;
enum sol_decode_case decode_case;
for (i = 0; i < 4; i++) {
slice = sol_str_slice_from_str(instrs[i % 2]);
if (i == 0)
decode_case = SOL_DECODE_LOWERCASE;
else if (i == 1)
decode_case = SOL_DECODE_UPERCASE;
else
decode_case = SOL_DECODE_BOTH;
memset(outstr, 0xff, sizeof(outstr));
r = sol_util_base16_decode(outstr, sizeof(outstr), slice, decode_case);
ASSERT_INT_EQ(r, strlen(expstr));
ASSERT_INT_EQ(outstr[r], (char)0xff);
outstr[r] = '\0';
ASSERT_STR_EQ(outstr, expstr);
}
/* negative test (case swap) */
for (i = 0; i < 2; i++) {
slice = sol_str_slice_from_str(instrs[i]);
memset(outstr, 0xff, sizeof(outstr));
r = sol_util_base16_decode(outstr, sizeof(outstr), slice, !i ?
SOL_DECODE_UPERCASE : SOL_DECODE_LOWERCASE);
}
/* short sequence (not multiple of 2) */
slice = sol_str_slice_from_str("1");
memset(outstr, 0xff, sizeof(outstr));
r = sol_util_base16_decode(outstr, sizeof(outstr), slice,
SOL_DECODE_UPERCASE);
ASSERT_INT_EQ(r, -EINVAL);
}
SOL_API int
sol_buffer_insert_from_base16(struct sol_buffer *buf, size_t pos, const struct sol_str_slice slice, enum sol_decode_case decode_case)
{
char *p;
size_t new_size;
ssize_t decoded_size, r;
const size_t nul_size = nul_byte_size(buf);
int err;
SOL_NULL_CHECK(buf, -EINVAL);
SOL_INT_CHECK(pos, > buf->used, -EINVAL);
if (slice.len == 0)
return 0;
if (pos == buf->used)
return sol_buffer_append_from_base16(buf, slice, decode_case);
decoded_size = sol_util_base16_calculate_decoded_len(slice);
if (decoded_size < 0)
return decoded_size;
err = sol_util_size_add(buf->used, decoded_size, &new_size);
if (err < 0)
return err;
if (nul_size) {
err = sol_util_size_add(new_size, nul_size, &new_size);
if (err < 0)
return err;
}
err = sol_buffer_ensure(buf, new_size);
if (err < 0)
return err;
p = sol_buffer_at(buf, pos);
memmove(p + decoded_size, p, buf->used - pos);
r = sol_util_base16_decode(p, decoded_size, slice, decode_case);
if (r != decoded_size) {
memmove(p, p + decoded_size, buf->used - pos);
if (nul_size)
sol_buffer_ensure_nul_byte(buf);
if (r < 0)
return r;
else
return -EINVAL;
}
buf->used += decoded_size;
if (nul_size)
return sol_buffer_ensure_nul_byte(buf);
return 0;
}