void CHTTPSock::ReadLine(const CString& sData) {
if (m_bGotHeader) {
return;
}
CString sLine = sData;
sLine.TrimRight("\r\n");
CString sName = sLine.Token(0);
if (sName.Equals("GET")) {
m_bPost = false;
m_sURI = sLine.Token(1);
m_bHTTP10Client = sLine.Token(2).Equals("HTTP/1.0");
ParseURI();
} else if (sName.Equals("POST")) {
m_bPost = true;
m_sURI = sLine.Token(1);
ParseURI();
} else if (sName.Equals("Cookie:")) {
VCString vsNV;
sLine.Token(1, true).Split(";", vsNV, false, "", "", true, true);
for (const CString& s : vsNV) {
m_msRequestCookies[s.Token(0, false, "=").Escape_n(CString::EURL, CString::EASCII)] =
s.Token(1, true, "=").Escape_n(CString::EURL, CString::EASCII);
}
} else if (sName.Equals("Authorization:")) {
CString sUnhashed;
sLine.Token(2).Base64Decode(sUnhashed);
m_sUser = sUnhashed.Token(0, false, ":");
m_sPass = sUnhashed.Token(1, true, ":");
m_bBasicAuth = true;
// Postpone authorization attempt until end of headers, because cookies should be read before that, otherwise session id will be overwritten in GetSession()
} else if (sName.Equals("Content-Length:")) {
m_uPostLen = sLine.Token(1).ToULong();
if (m_uPostLen > MAX_POST_SIZE)
PrintErrorPage(413, "Request Entity Too Large", "The request you sent was too large.");
} else if (sName.Equals("X-Forwarded-For:")) {
// X-Forwarded-For: client, proxy1, proxy2
if (m_sForwardedIP.empty()) {
const VCString& vsTrustedProxies = CZNC::Get().GetTrustedProxies();
CString sIP = GetRemoteIP();
VCString vsIPs;
sLine.Token(1, true).Split(",", vsIPs, false, "", "", false, true);
while (!vsIPs.empty()) {
// sIP told us that it got connection from vsIPs.back()
// check if sIP is trusted proxy
bool bTrusted = false;
for (const CString& sTrustedProxy : vsTrustedProxies) {
if (sIP.WildCmp(sTrustedProxy)) {
bTrusted = true;
break;
}
}
if (bTrusted) {
// sIP is trusted proxy, so use vsIPs.back() as new sIP
sIP = vsIPs.back();
vsIPs.pop_back();
} else {
break;
}
}
// either sIP is not trusted proxy, or it's in the beginning of the X-Forwarded-For list
// in both cases use it as the endpoind
m_sForwardedIP = sIP;
}
} else if (sName.Equals("If-None-Match:")) {
// this is for proper client cache support (HTTP 304) on static files:
m_sIfNoneMatch = sLine.Token(1, true);
} else if (sName.Equals("Accept-Encoding:") && !m_bHTTP10Client) {
SCString ssEncodings;
// trimming whitespace from the tokens is important:
sLine.Token(1, true).Split(",", ssEncodings, false, "", "", false, true);
m_bAcceptGzip = (ssEncodings.find("gzip") != ssEncodings.end());
} else if (sLine.empty()) {
if (m_bBasicAuth && !m_bLoggedIn) {
m_bLoggedIn = OnLogin(m_sUser, m_sPass, true);
// After successful login ReadLine("") will be called again to trigger "else" block
// Failed login sends error and closes socket, so no infinite loop here
} else {
m_bGotHeader = true;
if (m_bPost) {
m_sPostData = GetInternalReadBuffer();
CheckPost();
} else {
GetPage();
}
DisableReadLine();
}
}
}
