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Use case-insensitive scheme comparison in check_url.

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GitOrigin-RevId: d5c9cb66c49194d5264b63871aaabcc6768aaac4
This commit is contained in:
levlam 2020-05-07 03:21:05 +03:00
parent 3b3b67b834
commit 0d85bc39cf
1 changed files with 16 additions and 4 deletions
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20
td/telegram/misc.cpp
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@ -305,13 +305,25 @@ string get_emoji_fingerprint(uint64 num) {
return emojis[static_cast<size_t>((num & 0x7FFFFFFFFFFFFFFF) % emojis.size())].str();
}
static bool tolower_begins_with(Slice str, Slice prefix) {
if (prefix.size() > str.size()) {
return false;
}
for (size_t i = 0; i < prefix.size(); i++) {
if (to_lower(str[i]) != prefix[i]) {
return false;
}
}
return true;
}
Result<string> check_url(Slice url) {
bool is_tg = false;
bool is_ton = false;
if (begins_with(url, "tg:")) {
if (tolower_begins_with(url, "tg:")) {
url.remove_prefix(3);
is_tg = true;
} else if (begins_with(url, "ton:")) {
} else if (tolower_begins_with(url, "ton:")) {
url.remove_prefix(4);
is_ton = true;
}
@ -320,8 +332,8 @@ Result<string> check_url(Slice url) {
}
TRY_RESULT(http_url, parse_url(url));
if (is_tg || is_ton) {
if (begins_with(url, "http://") || http_url.protocol_ == HttpUrl::Protocol::HTTPS || !http_url.userinfo_.empty() ||
http_url.specified_port_ != 0 || http_url.is_ipv6_) {
if (tolower_begins_with(url, "http://") || http_url.protocol_ == HttpUrl::Protocol::HTTPS ||
!http_url.userinfo_.empty() || http_url.specified_port_ != 0 || http_url.is_ipv6_) {
return Status::Error(is_tg ? Slice("Wrong tg URL") : Slice("Wrong ton URL"));
}