#include "__SMTP_EHLO.h"
#include "SMTPServer.h"

namespace mail {

   int __SMTP_EHLO::processCommand(coreutils::ZString &request, SMTPSession &session, SMTPServer &server) {

      // RFC 5321 4.1.1.1 requires a domain/address-literal argument -
      // request[1] on a bare "EHLO" with none would have been an
      // out-of-bounds read on the split list (ZString::operator[] does
      // no bounds checking), not a graceful rejection.
      if (request.getList().size() < 2) {
         session.out << "501 Syntax error: EHLO requires a domain/address-literal argument" << CRLF;
         return 1;
      }

      session.clientDomainName = request[1];
      session.out << "250-" << server.hostName << CRLF;
      // Both already true of this implementation, not just advertised
      // hopefully: multiple pipelined command lines arriving in one TCP
      // segment are already handled correctly (TCPSocket::onDataReceived
      // loops over every complete line it has buffered before returning,
      // not just the first), and message bodies are stored byte-for-byte
      // with no 7-bit stripping anywhere in this codebase.
      session.out << "250-PIPELINING" << CRLF;
      session.out << "250-8BITMIME" << CRLF;
      // Enforced by __SMTP_DATA.cpp while accumulating the body.
      session.out << "250-SIZE " << (long)SMTPServer::maxMessageSize << CRLF;
      session.out << "250-AUTH LOGIN" << CRLF;
      session.out << "250 HELP" << CRLF;
      session.state = READY;
      return 1;
   }

}