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bugfixes + doc update

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ton 2020-02-08 23:24:24 +04:00
parent 77842f9b63
commit 1de39f5d7c
44 changed files with 652 additions and 272 deletions
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64
tdutils/td/utils/base64.cpp
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@ -14,7 +14,7 @@
You should have received a copy of the GNU Lesser General Public License
along with TON Blockchain Library. If not, see <http://www.gnu.org/licenses/>.
Copyright 2017-2019 Telegram Systems LLP
Copyright 2017-2020 Telegram Systems LLP
*/
#include "td/utils/base64.h"
@ -30,6 +30,68 @@
namespace td {
//TODO: fix copypaste
static const char *const symbols32_lc = "abcdefghijklmnopqrstuvwxyz234567";
static const char *const symbols32_uc = "ABCDEFGHIJKLMNOPQRSTUVWXYZ234567";
string base32_encode(Slice input, bool upper_case) {
auto *symbols32 = (upper_case ? symbols32_uc : symbols32_lc);
string base32;
base32.reserve((input.size() * 8 + 4) / 5);
uint32 c = 0;
uint32 length = 0;
for (size_t i = 0; i < input.size(); i++) {
c = (c << 8) | input.ubegin()[i];
length += 8;
while (length >= 5) {
length -= 5;
base32.push_back(symbols32[(c >> length) & 31]);
}
}
if (length != 0) {
base32.push_back(symbols32[(c << (5 - length)) & 31]);
}
//TODO: optional padding
return base32;
}
static unsigned char b32_char_to_value[256];
static void init_base32_table() {
static bool is_inited = [] {
std::fill(std::begin(b32_char_to_value), std::end(b32_char_to_value), static_cast<unsigned char>(32));
for (unsigned char i = 0; i < 32; i++) {
b32_char_to_value[static_cast<size_t>(symbols32_lc[i])] = i;
b32_char_to_value[static_cast<size_t>(symbols32_uc[i])] = i;
}
return true;
}();
CHECK(is_inited);
}
Result<string> base32_decode(Slice base32) {
init_base32_table();
string res;
res.reserve(base32.size() * 5 / 8);
uint32 c = 0;
uint32 length = 0;
for (size_t i = 0; i < base32.size(); i++) {
auto value = b32_char_to_value[base32.ubegin()[i]];
if (value == 32) {
return Status::Error("Wrong character in the string");
}
c = (c << 5) | value;
length += 5;
while (length >= 8) {
length -= 8;
res.push_back(td::uint8((c >> length) & 255));
}
}
if ((c & ((1 << length) - 1)) != 0) {
return Status::Error("Nonzero padding");
}
//TODO: check padding
return res;
}
static const char *const symbols64 = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
string base64_encode(Slice input) {