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[Net] Implement String::parse_url for parsing URLs.

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Splits the URL into (scheme, host, port, path).
Supports both literal IPv4 and IPv6.
Strip credentials when present (e.g. http://user:pass@example.com/).

Use that function in both HTTPRequest and WebSocketClient.

(cherry picked from commit 3bb40669d5)
This commit is contained in:
Fabio Alessandrelli
2021-04-26 09:33:28 +02:00
committed by Rémi Verschelde
parent 3b60911857
commit 77e3514315
4 changed files with 84 additions and 51 deletions
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65
core/ustring.cpp
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@@ -151,6 +151,71 @@ void CharString::copy_from(const char *p_cstr) {
strcpy(ptrw(), p_cstr);
}
Error String::parse_url(String &r_scheme, String &r_host, int &r_port, String &r_path) const {
// Splits the URL into scheme, host, port, path. Strip credentials when present.
String base = *this;
r_scheme = "";
r_host = "";
r_port = 0;
r_path = "";
int pos = base.find("://");
// Scheme
if (pos != -1) {
r_scheme = base.substr(0, pos + 3).to_lower();
base = base.substr(pos + 3, base.length() - pos - 3);
}
pos = base.find("/");
// Path
if (pos != -1) {
r_path = base.substr(pos, base.length() - pos);
base = base.substr(0, pos);
}
// Host
pos = base.find("@");
if (pos != -1) {
// Strip credentials
base = base.substr(pos + 1, base.length() - pos - 1);
}
if (base.begins_with("[")) {
// Literal IPv6
pos = base.rfind("]");
if (pos == -1) {
return ERR_INVALID_PARAMETER;
}
r_host = base.substr(1, pos - 1);
base = base.substr(pos + 1, base.length() - pos - 1);
} else {
// Anything else
if (base.get_slice_count(":") > 1) {
return ERR_INVALID_PARAMETER;
}
pos = base.rfind(":");
if (pos == -1) {
r_host = base;
base = "";
} else {
r_host = base.substr(0, pos);
base = base.substr(pos, base.length() - pos);
}
}
if (r_host.empty()) {
return ERR_INVALID_PARAMETER;
}
r_host = r_host.to_lower();
// Port
if (base.begins_with(":")) {
base = base.substr(1, base.length() - 1);
if (!base.is_valid_integer()) {
return ERR_INVALID_PARAMETER;
}
r_port = base.to_int();
if (r_port < 1 || r_port > 65535) {
return ERR_INVALID_PARAMETER;
}
}
return OK;
}
void String::copy_from(const char *p_cstr) {
if (!p_cstr) {