path: root/blabouncer.c

/*
 * This file is part of blabouncer (https://www.blatech.co.uk/l_bratch/blabouncer).
 * Copyright (C) 2019 Luke Bratch <luke@bratch.co.uk>.
 *
 * Blabouncer is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, version 3.
 *
 * Blabouncer is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with blabouncer. If not, see <http://www.gnu.org/licenses/>.
*/

// TODO:
// - Perhaps rename clients.ssl and server_ssl since they may not even be OpenSSL sockets

// "server" means the real IRC server
// "client" means bouncer clients

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <string.h>
#include <netdb.h>
#include <sys/types.h>
#include <netinet/in.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <sys/select.h>
#include <time.h>
#include <sys/stat.h>
#include <limits.h>
#include <signal.h>
#include <openssl/ssl.h>
#include <openssl/err.h>
#include <openssl/bio.h>

#include "functions.h"
#include "sockets.h"
#include "config.h"
#include "replay.h"
#include "logging.h"
#include "structures.h"

#define SOURCE_SERVER 0
#define SOURCE_CLIENT 1
#define EXCEPT_NONE 0
#define LOG_PRIVMSG 0
#define LOG_JOINPART 1
#define LOG_TOPIC 2
#define DEBUG_CRIT 0
#define DEBUG_SOME 1
#define DEBUG_FULL 2
#define ECONFINT 1 // errno value if getconfint() failed

#define STDIN 0 // stdin is fd 0
#define SIGINT 2 // SIGINT is signal 2
#define SIGTERM 15 // SIGTERM is signal 15

// Various important limits - note that several related ones are defined in functions.h and structures.h

// It seems to be that *message length* is max 512 bytes, but a socket read from at least UnrealIRCd seems to be up to at least 2416 (+1 for null) bytes.
// 1208 bytes with OpenSSL, 2416 bytes with plain text.
#define MAXRCVSIZE 2417
#define MAXTOKENS 100 // maximum number of (CRLF or space) separated tokens per server response we expect (TODO - check this is reasonable) (CRLF and spaces just grouped here due to laziness)
#define SERVERTIMEOUT 300 // How many seconds to wait without hearing from the server before assuming a timeout

// Global debug control
int debug = 0; // Debug verbosity ("0" for critical only, "1" for some extra info, "2" for full debug mode)
char debugpath[PATH_MAX]; // Path to debug file

// Set if certain signal (just SIGINT and SIGKILL at time of writing) is received
int signum = 0;

// Signal handler
// We don't actually do anything in here, the main pselect() notice signals
void sighandler(int sig) {
  signum = sig;
}

int connecttoircserver(SSL_CTX **serverctx, SSL **server_ssl, int *serversockfd, struct ircdstrings *ircdstrings, struct settings *settings, struct client *clients) {
  char outgoingmsg[MAXDATASIZE]; // String to send to server

  if (settings->servertls) {
    debugprint(DEBUG_FULL, "server openssl start.\n");
    *serverctx = create_openssl_context(SOURCE_SERVER);
    configure_openssl_context(*serverctx, NULL, NULL);
    *server_ssl = SSL_new(*serverctx);
    SSL_set_fd(*server_ssl, *serversockfd);
    if (SSL_connect(*server_ssl) == -1) {
      ERR_print_errors_fp(stderr);
    } else {
      debugprint(DEBUG_FULL, "SSL_connect() success.\n");
    }
    debugprint(DEBUG_FULL, "server openssl complete.\n");
  } else {
    // If not using TLS then just slap the serversockfd into server_ssl by casting it
    *server_ssl = (SSL*)(long int)*serversockfd;
  }

  // <=============================================
  // Initialise IRC connecting/registration state

  // Set ircdstrings to zero-length strings for now
  ircdstrings->greeting001[0] = '\0';
  ircdstrings->greeting002[0] = '\0';
  ircdstrings->greeting003[0] = '\0';
  ircdstrings->greeting004[0] = '\0';
  ircdstrings->greeting005a[0] = '\0';
  ircdstrings->greeting005b[0] = '\0';
  ircdstrings->greeting005c[0] = '\0';
  ircdstrings->ircdname[0] = '\0';
  ircdstrings->nickuserhost[0] = '\0';
  ircdstrings->ircnick[0] = '\0';
  ircdstrings->ircusername[0] = '\0';
  ircdstrings->currentmsg[0] = '\0';
  ircdstrings->mode[0] = '\0';
  // ircdstrings->oldnick is not set here as we want to track reconnections separately
  // And set non-string things to zero (TODO - Rename this from ircdstrings since it's not all strings any more)
  ircdstrings->capmultiprefix = 0;
  ircdstrings->autonicknum = 0;
  ircdstrings->lastmessagetime = time(NULL);
  // ircdstrings.reconnecting is not set here as we want to track reconnections separately

  // Populate nick and username from our configuration file for now, real IRCd may change them later (TODO - Is this true of username?)
  strcpy(ircdstrings->ircnick, settings->ircnick);
  strcpy(ircdstrings->ircusername, settings->ircusername);

  // Send the server password if one was configured
  if (settings->ircserverpassword[0]) {
    snprintf(outgoingmsg, MAXDATASIZE, "PASS %s", settings->ircserverpassword);
    // sourcefd = 0 as this is a trusted message
    sendtoserver(*server_ssl, outgoingmsg, strlen(outgoingmsg), 0, clients, settings);
  }

  // Send our NICK
  snprintf(outgoingmsg, MAXDATASIZE, "NICK %s", ircdstrings->ircnick); // TODO - Check for success (with return code)
  // sourcefd = 0 as this is a trusted message
  sendtoserver(*server_ssl, outgoingmsg, strlen(outgoingmsg), 0, clients, settings);

  // Send our USER
  snprintf(outgoingmsg, MAXDATASIZE, "USER %s 8 * : %s", ircdstrings->ircusername, settings->ircrealname); // TODO - Check for success (with return code)
                                                                                // TODO - Send a more intelligent/correct USER string
  // sourcefd = 0 as this is a trusted message
  sendtoserver(*server_ssl, outgoingmsg, strlen(outgoingmsg), 0, clients, settings);

  // =============================================>

  return 1; // TODO - Return 0 if this fails and make callers do something with that
}

// Exit the program cleanly - tell clients, tell the server, then exit(0)
// Optional quit message string "quitmsg"
// "sourcefd" of 0 means the request didn't come from a client
void cleanexit(SSL *server_ssl, struct client *clients, int sourcefd, struct ircdstrings *ircdstrings, struct settings *settings, char *quitmsg) {
  char outgoingmsg[MAXDATASIZE];

  // Tell clients and debug log
  if (sourcefd) {
    snprintf(outgoingmsg, MAXDATASIZE, "NOTICE %s :Exiting on request from client with fd '%d', message '%s'.", ircdstrings->ircnick, sourcefd, quitmsg);
    debugprint(DEBUG_CRIT, "Exiting on request from client with fd '%d', message '%s'.\n", sourcefd, quitmsg);
  } else {
    snprintf(outgoingmsg, MAXDATASIZE, "NOTICE %s :Exiting on request (not from a client), message '%s'.", ircdstrings->ircnick, quitmsg);
    debugprint(DEBUG_CRIT, "Exiting on request (not from a client), message '%s'.\n", quitmsg);
  }
  sendtoallclients(clients, outgoingmsg, EXCEPT_NONE, settings);

  // Tell the server
  // Combine "QUIT :" with any (optional) quit message
  snprintf(outgoingmsg, MAXDATASIZE, "QUIT :%s", quitmsg);
  sendtoserver(server_ssl, outgoingmsg, strlen(outgoingmsg), sourcefd, clients, settings);

  exit(0);
}

// Figure out what to do with each CRLF-split IRC message (if anything)
// by splitting out the different components by space character (ASCII 0x20).
//
// serversockfd, clientsockfd, fdmax, arr_clients, arr_authed, all passed to here so we can
// send/relay a response to server or (other) client(s) directly from this function if
// we want to.
//
// str is the raw string
//
// source is either 0 (SOURCE_SERVER) (server - from the real IRC server) or 1 (SOURCE_CLIENT) (client - from a real IRC client)
//
// Return 1 if we processed something and expect the caller to not need to do anything more
// Return 0 if we didn't process it and the caller might want to do something
//int processircmessage(int *serversockfd, int *clientsockfd, char *str, int source) {
int processircmessage(SSL *server_ssl, char *str, int source, struct client *clients, int sourcefd, struct ircdstrings *ircdstrings, struct channel *channels, struct settings *settings) {
  // Track which space-separated token within this response we're on
  int counter = 0;

  // Build array of each space-separated token (TODO - Use counter to stop splitting once we reach some reasonable value - i.e. once we're definitely past commands and into just free text)
  char tokens[MAXTOKENS][MAXDATASIZE];

  debugprint(DEBUG_FULL, "  >> processircmessage(): Processing source %d message \"%s\"...\n", source, str);

  // Copy to a temporary string so we still have the original in case it's not processed
  char *strcopy = strdup(str);
  // Keep track of initial pointer for free()ing later
  char *strcopyPtr = strcopy;

  char *token;

  while ((token = strsep(&strcopy, " ")) != NULL) {
    if (*token  == '\0') continue; // Skip consecutive matches
    if (counter >= MAXTOKENS) break; // Too many tokens
    debugprint(DEBUG_FULL, "  >> Message Token: \"%s\", length %zd.\n", token, strlen(token));
    // Copy into the token array (strlen + 1 to get the NULL terminator)
    strncpy(tokens[counter], token, strlen(token) + 1);
    counter++;
  }

  // <=============================================
  // IRC command processing (commands from server or client)

  switch(source) {
    case SOURCE_SERVER: // If message(s) were from the real IRC server
      // Record that we received something from the server for timeout checking purposes
      ircdstrings->lastmessagetime = time(NULL); // snprintf(NULL, 0, "%ld", timenow);

      // Server PING received?  If so, send a PONG back with the next element as the argument.
      if (strncmp(tokens[0], "PING", strlen(tokens[0])) == 0) {
        debugprint(DEBUG_FULL, "Server PING found and it is: %s with length %zd!  Sending response...\n", tokens[0], strlen(tokens[0]));

        char outgoingmsg[MAXDATASIZE]; // String to send to server
        if (!snprintf(outgoingmsg, MAXDATASIZE, "PONG %s", tokens[1])) { // TODO - Make sure tokens[1] actually has a token
          fprintf(stderr, "Error while preparing PONG response!\n");
          debugprint(DEBUG_CRIT, "Error while preparing PONG response!\n");
          outgoingmsg[0] = '\0';
        }
        // sourcefd = 0 as this is a trusted response
        sendtoserver(server_ssl, outgoingmsg, strlen(outgoingmsg), 0, clients, settings);

        // We processed something so return true
        free(strcopyPtr);
        return 1;
      }

      // Prefix received?  TODO - Care about what the prefix is - what if it's a different server/network/whatever?
      if (tokens[0][0] == ':') {
        debugprint(DEBUG_FULL, "Prefix found: '%s'!  Next token is '%s', length %zd.\n", tokens[0], tokens[1], strlen(tokens[1]));
        // Greetings 001 through to 005, store in ircdstrings array for resending when clients connect
        // Also store our nick!user@host from greeting 001
        // Also store the real IRCd's name from greeting 004
        if (strncmp(tokens[1], "001", strlen(tokens[1])) == 0) {
          debugprint(DEBUG_FULL, "Found greeting 001 (%s) (length %zd), storing in ircdstrings struct.\n", str, strlen(str));
          strncpy(ircdstrings->greeting001, str, strlen(str));
          // Null the end of the string
          ircdstrings->greeting001[strlen(str)] = '\0';
          debugprint(DEBUG_FULL, "Storing our nick!user@host (:%s) from greeting 001 in ircdstrings struct.\n", tokens[counter - 1]);
          // Prepend a colon (:) first since everything (so far) needs one
          if (!snprintf(ircdstrings->nickuserhost, MAXDATASIZE, ":%s", tokens[counter - 1])) {
            fprintf(stderr, "Error while preparing nickuserhost for storage!\n");
            debugprint(DEBUG_CRIT, "Error while preparing nickuserhost for storage!\n");
            exit(1);
          }
          // Null the end of the new string
          ircdstrings->nickuserhost[strlen(tokens[counter - 1]) + 1] = '\0'; // +1 for the inserted colon
          debugprint(DEBUG_FULL, "nickuserhost '%s' stored.\n", ircdstrings->nickuserhost);
          free(strcopyPtr);
          return 1;
        } else if (strncmp(tokens[1], "002", strlen(tokens[1])) == 0) {
          debugprint(DEBUG_FULL, "Found greeting 002 (%s), storing in ircdstrings struct.\n", str);
          strncpy(ircdstrings->greeting002, str, strlen(str));
          // Null the end of the string
          ircdstrings->greeting002[strlen(str)] = '\0';
          free(strcopyPtr);
          return 1;
        } else if (strncmp(tokens[1], "003", strlen(tokens[1])) == 0) {
          debugprint(DEBUG_FULL, "Found greeting 003 (%s), storing in ircdstrings struct.\n", str);
          strncpy(ircdstrings->greeting003, str, strlen(str));
          // Null the end of the string
          ircdstrings->greeting003[strlen(str)] = '\0';
          free(strcopyPtr);
          return 1;
        } else if (strncmp(tokens[1], "004", strlen(tokens[1])) == 0) {
          debugprint(DEBUG_FULL, "Found greeting 004 (%s), storing in ircdstrings struct.\n", str);
          strncpy(ircdstrings->greeting004, str, strlen(str));
          // Null the end of the string
          ircdstrings->greeting004[strlen(str)] = '\0';
          debugprint(DEBUG_FULL, "Storing the real IRCd's name (%s) from greeting 004 in ircdstrings struct.\n", tokens[3]);
          strncpy(ircdstrings->ircdname, tokens[3], strlen(tokens[3]));
          // Null the end of the string
          ircdstrings->ircdname[strlen(tokens[3])] = '\0';
          // Receiving greeting 004 means we're now registered
          // Request IRCv3 multi-prefix extension so we can more accurately inform new clients about current user prefixes
          sendtoserver(server_ssl, "CAP REQ multi-prefix", strlen("CAP REQ multi-prefix"), 0, clients, settings);
          // Send the connect command, if set
          if (settings->connectcommand[0]) {
            sendtoserver(server_ssl, settings->connectcommand, strlen(settings->connectcommand), 0, clients, settings);
          }
          // If this is a reconnection, JOIN existing channels and catch clients up again
          if (ircdstrings->reconnecting) {
            // First tell clients if our nick changed
            if (!strcmp(ircdstrings->ircnick, ircdstrings->oldnick) == 0) {
              debugprint(DEBUG_SOME, "Telling clients about nick change.\n");
              char nickmsg[MAXDATASIZE];
              snprintf(nickmsg, MAXDATASIZE, ":%s NICK :%s", ircdstrings->oldnick, ircdstrings->ircnick);
              sendtoallclients(clients, nickmsg, sourcefd, settings);
            }

            // Next re-join channels
            // Storing separately so we can skip over blank channels.
            int channelcount = getchannelcount(channels);
            // Join all the channels and make a note of the channel count
            for (int i = 0; i < channelcount; i++) {
              // Skip this one and increment channelcount if it's a blank channel
              if (!channels[i].name[0]) {
                  debugprint(DEBUG_FULL, "Reconnection: Skipping channel[%d], incrementing channelcount.\n", i);
                  channelcount++;
                  continue;
              }

              debugprint(DEBUG_SOME, "Reconnection: Re-joining '%s'.\n", channels[i].name);

              char joinmsg[MAXDATASIZE];
              snprintf(joinmsg, MAXDATASIZE, "JOIN %s", channels[i].name);
              sendtoserver(server_ssl, joinmsg, strlen(joinmsg), 0, clients, settings);
            }

            // Finally do a replay for all clients and tell them we're reconnected
            for (int i = 0; i < MAXCLIENTS; i++) {
              if (clients[i].fd) {
                char alertmsg[MAXDATASIZE];
                if (!doreplay(clients[i].fd, settings->replayseconds, clients, settings, ircdstrings, channels)) {
                  snprintf(alertmsg, MAXDATASIZE, "NOTICE %s :Unable to read replay log file!", ircdstrings->ircnick);
                  sendtoclient(sourcefd, alertmsg, clients, settings, 0);
                }
                snprintf(alertmsg, MAXDATASIZE, "NOTICE %s :Reconnection complete.", ircdstrings->ircnick);
                sendtoclient(clients[i].fd, alertmsg, clients, settings, 0);
              }
            }

            // Reconnection complete
            ircdstrings->oldnick[0] = '\0';
            ircdstrings->reconnecting = 0;
          // If it's not, deal with auto channels
          } else {
            // Join any auto channels set in the configuration file
            joinautochannels(server_ssl, clients, settings);
          }
          free(strcopyPtr);
          return 1;
        } else if (strncmp(tokens[1], "005", strlen(tokens[1])) == 0) {
          debugprint(DEBUG_FULL, "Found greeting 005 (%s), storing in ircdstrings struct.\n", str);
          // Find an empty greeting005 string in ircdstrings and store in there...
          if (!ircdstrings->greeting005a[0]) {
            strncpy(ircdstrings->greeting005a, str, strlen(str));
            ircdstrings->greeting005a[strlen(str)] = '\0';
          } else if (!ircdstrings->greeting005b[0]) {
            strncpy(ircdstrings->greeting005b, str, strlen(str));
            ircdstrings->greeting005b[strlen(str)] = '\0';
          } else if (!ircdstrings->greeting005c[0]) {
            strncpy(ircdstrings->greeting005c, str, strlen(str));
            ircdstrings->greeting005c[strlen(str)] = '\0';
          } else {
            // ...or if they are all fill, discard - TODO - Support more than three greeting005 strings!
            debugprint(DEBUG_CRIT, "Already stored three greeting 005 strings, discarding this one.\n");
          }
          free(strcopyPtr);
          return 1;
        }

        // Server JOIN received?  Add to our local channel array if it's us, or record the user in the channel if it's not us.
        if (strncmp(tokens[1], "JOIN", strlen(tokens[1])) == 0) {
          debugprint(DEBUG_FULL, "Server JOIN found and it is: %s with length %zd!  Next token is '%s'.  Adding to local channel list if it's us.\n", tokens[0], strlen(tokens[0]), tokens[2]);
          // Next token should be the channel name but it probably needs the leading ':' stripping
          debugprint(DEBUG_FULL, "processircmessage(): Channel name was '%s'\n", tokens[2]);
          stripprefix(tokens[2]);
          debugprint(DEBUG_FULL, "processircmessage(): Channel name now '%s'\n", tokens[2]);

          // If the user JOINing is us, then we must have joined a channel, so add to our local channel array.
          // Copy to a temporary string so we still have the original in case we need it
          char *prefixcopy = strdup(tokens[0]);
          // Just get the nick for comparison
          extractnickfromprefix(prefixcopy);
          if (strncmp(prefixcopy, ircdstrings->ircnick, strlen(tokens[0])) == 0) {
            debugprint(DEBUG_FULL, "Server JOIN: nick is ours ('%s' vs '%s').\n", prefixcopy, ircdstrings->ircnick);
            // TODO - Saner way to initialise this since we don't have the variables yet?
            // TODO - Defaulting to type '=' which is "public" since I don't know what else to guess.
            createchannel(channels, tokens[2], "TOPIC", "TOPICWHO", "0");
          } else {
            debugprint(DEBUG_FULL, "Server JOIN: nick is NOT ours ('%s' vs '%s').\n", prefixcopy, ircdstrings->ircnick);
          }

          // And then send to all clients
          sendtoallclients(clients, str, sourcefd, settings);

          // Write to replay log if replay logging enabled
          if (settings->replaylogging) {
            writereplayline(str, settings->basedir);
          }

          // Write to normal log if logging enabled
          if (settings->logging) {
            logline(str, settings->ircnick, settings->basedir, LOG_JOINPART);
          }

          free(prefixcopy);
          free(strcopyPtr);
          return 1;
        }

        // Server PART received?  Remove from our local channel list if it's us.
        if (strncmp(tokens[1], "PART", strlen(tokens[1])) == 0) {
          debugprint(DEBUG_FULL, "Server PART found and it is: %s with length %zd!  Next token is '%s'.  Removing from local channel list if it's us.\n", tokens[0], strlen(tokens[0]), tokens[2]);

          // If the user PARTing is us, then we must have left a channel, so remove it from our local channel array.
          // (If it's not us, then it's another user PARTing a channel, so just pass straight through to letting all our clients know.)
          // Copy to a temporary string so we still have the original in case we need it
          char *prefixcopy = strdup(tokens[0]);
          // Just get the nick for comparison
          extractnickfromprefix(prefixcopy);
          if (strncmp(prefixcopy, ircdstrings->ircnick, strlen(tokens[0])) == 0) {
            debugprint(DEBUG_FULL, "Server PART: nick is ours ('%s' vs '%s').\n", prefixcopy, ircdstrings->ircnick);
            removechannel(channels, tokens[2]);
          } else {
            debugprint(DEBUG_FULL, "Server PART: nick is NOT ours ('%s' vs '%s').\n", prefixcopy, ircdstrings->ircnick);
          }

          // And then send to all clients
          sendtoallclients(clients, str, sourcefd, settings);

          // Write to replay log if replay logging enabled
          if (settings->replaylogging) {
            writereplayline(str, settings->basedir);
          }

          // Write to normal log if logging enabled
          if (settings->logging) {
            logline(str, settings->ircnick, settings->basedir, LOG_JOINPART);
          }

          free(prefixcopy);
          free(strcopyPtr);
          return 1;
        }

        // Channel topics/names/nicks/etc.
        // Server 331 (RPL_NOTOPIC) the topic is blank which we track by having a set timestamp of 0
        if (strncmp(tokens[1], "331", strlen(tokens[1])) == 0) {
          // Might as well blank our current topic value
          setchanneltopic(channels, tokens[3], "");
          // Set the topic timestamp to 0 which we use to determine an "unset" topic when new clients connect
          setchanneltopicwhotime(channels, tokens[3], "", "0");
        // Server 332 (RPL_TOPIC) set the channel topic
        } else if (strncmp(tokens[1], "332", strlen(tokens[1])) == 0) {
          debugprint(DEBUG_FULL, "Server 332 (RPL_TOPIC) found, extracting topic and storing in channel struct.\n");
          // Need to extract the final parameter as topics can have spaces
          // Copy to a temporary string so we still have the original in case we need it
          char *topiccopy = strdup(str);
          extractfinalparameter(topiccopy);
          setchanneltopic(channels, tokens[3], topiccopy);
          free(topiccopy);
        // Server 333 (RPL_TOPICWHOTIME) set the channel topic setter and the time it was set
        } else if (strncmp(tokens[1], "333", strlen(tokens[1])) == 0) {
          debugprint(DEBUG_FULL, "Server 333 (RPL_TOPICWHOTIME) found, extracting who and when, and storing in channel struct.\n");
          setchanneltopicwhotime(channels, tokens[3], tokens[4], tokens[5]);
        // Server 353 (RPL_NAMREPLY), relay to all clients if we've just JOINed the channel, or relay to any clients
        // who were pending RPL_NAMREPLYs if it's an existing channel.
        } else if (strncmp(tokens[1], "353", strlen(tokens[1])) == 0) {
          // It must be a new channel and we don't have the NAMES
          if (!channelgotnames(channels, tokens[4])) {
            debugprint(DEBUG_FULL, "Server 353 received for a new channel, sending to all clients.\n");
            // Relay to all clients
            sendtoallclients(clients, str, sourcefd, settings);
          } else {
            // We were already in the channel and have the NAMES
            debugprint(DEBUG_FULL, "Server 353 received for an existing channel, sending to all clients who were pending RPL_NAMREPLYs.\n");
            // If any clients were pending RPL_NAMREPLYs, send this on to them
            // TODO - Make sure clients only get the ones they were waiting on in case there are multiple conflicting requests going on at once
            for (int i = 0; i < MAXCLIENTS; i++) {
              if (clients[i].pendingnames > 0) {
                debugprint(DEBUG_FULL, "Sending 353 RPL_NAMREPLY for channel '%s' to client with fd '%d' who was pending %d RPL_NAMREPLYs.\n", tokens[4], clients[i].fd, clients[i].pendingnames);
                sendtoclient(clients[i].fd, str, clients, settings, 0);
              }
            }
          }
          free(strcopyPtr);
          return 1;
        // Server 366 (RPL_ENDOFNAMES), relay to all clients if we've just JOINed the channel, or relay to
        // and decrement from any clients who were waiting on RPL_NAMREPLY if it's an existing channel.
        } else if (strncmp(tokens[1], "366", strlen(tokens[1])) == 0) {
          int channelelement;
          // It must be a new channel and we don't have the NAMES
          if (!(channelelement = channelgotnames(channels, tokens[3]))) {
            debugprint(DEBUG_FULL, "Server 366 received for a new channel, sending to all clients and set as got names.\n");
            // We have the names now!
            channels[channelindex(channels, tokens[3])].gotnames = 1;
            // Relay to all clients
            sendtoallclients(clients, str, sourcefd, settings);
          } else {
            // We were already in the channel and have the NAMES
            // TODO - Make sure clients only get the ones they were waiting on in case there are multiple conflicting requests going on at once
            debugprint(DEBUG_FULL, "Server 366 received for an existing channel, sending to all clients who were pending RPL_NAMREPLYs and decrementing their pendingnames count.\n");
            for (int i = 0; i < MAXCLIENTS; i++) {
              if (clients[i].pendingnames > 0) {
                sendtoclient(clients[i].fd, str, clients, settings, 0);
                // And decrement their pendingnames count
                debugprint(DEBUG_FULL, "Decrementing pendingnames due 366 RPL_ENDOFNAMES to for channel '%s' to client with fd '%d' who was pending %d RPL_NAMREPLYs.\n",
                           tokens[3], clients[i].fd, clients[i].pendingnames);
                clients[i].pendingnames--;
                debugprint(DEBUG_FULL, "Client with fd '%d' has '%d' pendingnames left.\n", clients[i].fd, clients[i].pendingnames);
              }
            }
          }
          free(strcopyPtr);
          return 1;
        }

        // Server TOPIC received?  Update our local channel topic info then relay to clients.
        if (strncmp(tokens[1], "TOPIC", strlen(tokens[1])) == 0) {
          debugprint(DEBUG_FULL, "Server TOPIC found and it is: %s with length %zd!  Next token is '%s'.  Updating our local channel topic info.\n",
                     tokens[0], strlen(tokens[0]), tokens[2]);

          // Set the topic itself

          // Need to extract the final parameter as topics can have spaces
          // Copy to a temporary string so we still have the original in case we need it
          char *topiccopy = strdup(str);
          extractfinalparameter(topiccopy);
          setchanneltopic(channels, tokens[2], topiccopy);

          // Extract the author and get the current timestamp

          // Extract the topic setter from the prefix (Prefix of ":foo!bar@baz" means "foo" set the topic.)
          // Copy to a temporary string so we still have the original in case we need it
          char *prefixcopy = strdup(tokens[0]);
          extractnickfromprefix(prefixcopy);

          // Get the current time and manipulate it into a C string
          time_t timenow = time(NULL);
          int timenowlen = snprintf(NULL, 0, "%ld", timenow);
          char timenowstr[timenowlen + 1]; // TODO - Make this Year 2038 proof.
          snprintf(timenowstr, timenowlen + 1, "%ld", timenow);

          // Actually set the author and timestamp
          setchanneltopicwhotime(channels, tokens[2], prefixcopy, timenowstr);

          // And then finally relay to all clients
          sendtoallclients(clients, str, sourcefd, settings);

          // Write to replay log if replay logging enabled
          if (settings->replaylogging) {
            writereplayline(str, settings->basedir);
          }

          // Write to normal log if logging enabled
          if (settings->logging) {
            logline(str, settings->ircnick, settings->basedir, LOG_TOPIC);
          }

          free(topiccopy);
          free(prefixcopy);
          free(strcopyPtr);
          return 1;
        }

        // Server PRIVMSG received?  Relay to all clients and write to replay log.
        if (strncmp(tokens[1], "PRIVMSG", strlen(tokens[1])) == 0) {
          debugprint(DEBUG_FULL, "Server PRIVMSG found and it is: %s with length %zd!  Next token is '%s'.  Relaying to all clients.\n",
                     tokens[0], strlen(tokens[0]), tokens[2]);

          sendtoallclients(clients, str, sourcefd, settings);

          // Write to replay log if replay logging enabled
          if (settings->replaylogging) {
            writereplayline(str, settings->basedir);
          }

          // Write to normal log if logging enabled
          if (settings->logging) {
            logline(str, settings->ircnick, settings->basedir, LOG_PRIVMSG);
          }

          free(strcopyPtr);
          return 1;
        }

        // Server NICK received?
        // 1. Find out if it was us and change ircnick and nickuserhost if so
        // 2. Either way, relay to all clients
        if (strncmp(tokens[1], "NICK", strlen(tokens[1])) == 0) {
          debugprint(DEBUG_FULL, "Server NICK found and it is: %s with length %zd!  Next token is '%s'.  Updating records and relaying to all clients.\n",
                     tokens[0], strlen(tokens[0]), tokens[2]);

          // Was it us?
          // Copy to a temporary string so we still have the original in case we need it
          char *svrprefixcopy = strdup(tokens[0]);
          // Just get the nick for comparison
          extractnickfromprefix(svrprefixcopy);
          if (strncmp(ircdstrings->ircnick, svrprefixcopy, strlen(ircdstrings->ircnick)) == 0) {
            debugprint(DEBUG_FULL, "Server NICK: nick is ours ('%s' vs '%s').\n", svrprefixcopy, ircdstrings->ircnick);
            // Make a copy of the old nickuserhost for updategreetings() below
            char *nickuserhostcpy = strdup(ircdstrings->nickuserhost);
            // Update nickuserhost with the new :nick!user@host
            updatenickuserhost(ircdstrings->nickuserhost, tokens[2]);
            debugprint(DEBUG_FULL, "Updated nickuserhost to '%s'.\n", ircdstrings->nickuserhost);
            // Prepare to update ircnick and greetings strings
            // Temporary copy of new nickuserhost
            char *prefixcopy = strdup(ircdstrings->nickuserhost);
            // Get nick from it
            extractnickfromprefix(prefixcopy);
            // Update greeting strings for relaying to new clients
            updategreetings(ircdstrings->greeting001, ircdstrings->greeting002, ircdstrings->greeting003, ircdstrings->greeting004,
                            ircdstrings->greeting005a, ircdstrings->greeting005b, ircdstrings->greeting005c, ircdstrings->nickuserhost,
                            nickuserhostcpy, tokens[2], ircdstrings->ircnick);
            // Update our nick
            strcpy(ircdstrings->ircnick, prefixcopy);
            debugprint(DEBUG_FULL, "Updated ircnick to '%s'.\n", ircdstrings->ircnick);
            free(nickuserhostcpy);
            free(prefixcopy);
          }

          // Relay to all clients
          sendtoallclients(clients, str, sourcefd, settings);

          free(svrprefixcopy);
          free(strcopyPtr);
          return 1;
        }

        // Server MODE received?  See what sort it is and act accordingly.
        if (strncmp(tokens[1], "MODE", strlen(tokens[1])) == 0) {
          debugprint(DEBUG_FULL, "Server MODE found and it is: %s with length %zd!  Next token is '%s'.  Analysing...\n",
                     tokens[1], strlen(tokens[1]), tokens[2]);

          // 4 tokens could be either our initial mode or a channel mode (or something else - TODO - what else?)
          if (counter == 4) {
            // Might be our initial mode (e.g. ":nick MODE nick :+iwz")
            char comparison[MAXDATASIZE];
            snprintf(comparison, MAXDATASIZE, ":%s MODE %s :", ircdstrings->ircnick, ircdstrings->ircnick);
            if (strncmp(str, comparison, strlen(comparison)) == 0) {
              // Looks like it!
              debugprint(DEBUG_FULL, "Our initial MODE found (%s), storing for later.\n", tokens[3]);
              // Store in ircdstrings for when clients connect and relay to current clients.
              strcpy(ircdstrings->mode, tokens[3]);

              // Relay to all current clients anyway - TODO - Necessary?
              sendtoallclients(clients, str, sourcefd, settings);

              free(strcopyPtr);
              return 1;
            }

            // Might be a channel mode (e.g. ":nick!user@host MODE #channel +s")
            if (tokens[2][0] == '#') {
              // Looks like it!  Tell all clients.
              debugprint(DEBUG_FULL, "Channel MODE found (%s %s), telling all clients.\n", tokens[2], tokens[3]);
              sendtoallclients(clients, str, sourcefd, settings);

              free(strcopyPtr);
              return 1;
            }
          }

          // Relay to all current clients if not processed by the above
          sendtoallclients(clients, str, sourcefd, settings);

          free(strcopyPtr);
          return 1;
        }

        // Server 324 (RPL_CHANNELMODEIS) received?  Send to any clients who requested a channel MODE.
        if (strncmp(tokens[1], "324", strlen(tokens[1])) == 0) {
          debugprint(DEBUG_FULL, "Server 324 (RPL_CHANNELMODEIS) found and it is: %s with length %zd!  Sending to clients who are pending this.\n",
                     tokens[1], strlen(tokens[1]));

          // Relay to all pending clients
          for (int i = 0; i < MAXCLIENTS; i++) {
            if (clients[i].pendingchannelmode == 1) {
              sendtoclient(clients[i].fd, str, clients, settings, 0);
              // And clear the pending flag
              clients[i].pendingchannelmode = 0;
            }
          }

          free(strcopyPtr);
          return 1;
        }

        // Server 368 (RPL_ENDOFBANLIST) received?  Send to any clients who requested a ban MODE query. - TODO - Identify and handle start/middle of ban responses.
        if (strncmp(tokens[1], "368", strlen(tokens[1])) == 0) {
          debugprint(DEBUG_FULL, "Server 368 (RPL_ENDOFBANLIST) found and it is: %s with length %zd!  Sending to clients who are pending this.\n",
                     tokens[1], strlen(tokens[1]));

          // Relay to all pending clients
          for (int i = 0; i < MAXCLIENTS; i++) {
            if (clients[i].pendingban == 1) {
              sendtoclient(clients[i].fd, str, clients, settings, 0);
              // And clear the pending flag
              clients[i].pendingban = 0;
            }
          }

          free(strcopyPtr);
          return 1;
        }

        // Server 329 (RPL_CREATIONTIME), 352 (RPL_WHOREPLY), or 315 (RPL_ENDOFWHO) received?  Send to any clients who requested a WHO.
        if (strncmp(tokens[1], "329", strlen(tokens[1])) == 0 || strncmp(tokens[1], "352", strlen(tokens[1])) == 0 || strncmp(tokens[1], "315", strlen(tokens[1])) == 0) {
          debugprint(DEBUG_FULL, "Server 329 (RPL_CREATIONTIME), 352 (RPL_WHOREPLY), or 315 (RPL_ENDOFWHO) found and it is: %s with length %zd!  Sending to clients who are pending one of these.\n",
                     tokens[1], strlen(tokens[1]));

          // Relay to all pending clients
          for (int i = 0; i < MAXCLIENTS; i++) {
            if (clients[i].pendingwho == 1 && clients[i].fd) {
              sendtoclient(clients[i].fd, str, clients, settings, 0);
              // And clear the pending flag if it's 315 (RPL_ENDOFWHO)
              if (strncmp(tokens[1], "315", strlen(tokens[1])) == 0) {
                clients[i].pendingwho = 0;
              }
            }
          }

          free(strcopyPtr);
          return 1;
        }

        // Server 321 (RPL_LISTSTART), 322 (RPL_LIST), or 323 (RPL_LISTEND) received?  Send to any clients who requested a WHO.
        if (strncmp(tokens[1], "321", strlen(tokens[1])) == 0 || strncmp(tokens[1], "322", strlen(tokens[1])) == 0 || strncmp(tokens[1], "323", strlen(tokens[1])) == 0) {
          debugprint(DEBUG_FULL, "Server 321 (RPL_LISTSTART), 322 (RPL_LIST), or 323 (RPL_LISTEND) found and it is: %s with length %zd!  Sending to clients who are pending one of these.\n",
                     tokens[1], strlen(tokens[1]));

          // Relay to all pending clients
          for (int i = 0; i < MAXCLIENTS; i++) {
            if (clients[i].pendinglist == 1 && clients[i].fd) {
              sendtoclient(clients[i].fd, str, clients, settings, 0);
              // And clear the pending flag if it's 323 (RPL_LISTEND)
              if (strncmp(tokens[1], "323", strlen(tokens[1])) == 0) {
                clients[i].pendinglist = 0;
              }
            }
          }

          free(strcopyPtr);
          return 1;
        }

        // Server 307 (RPL_SUSERHOST), 311 (RPL_WHOISUSER), 312 (RPL_WHOISSERVER), 313 (RPL_WHOISOPERATOR), 317 (RPL_WHOISIDLE),
        // 319 (RPL_WHOISCHANNELS), 320 (RPL_WHOISSPECIAL), 671 (RPL_WHOISSECURE), or 318 (RPL_ENDOFWHOIS) received?
        // Send to any clients who requested a WHOIS.
        if (strncmp(tokens[1], "307", strlen(tokens[1])) == 0 || strncmp(tokens[1], "311", strlen(tokens[1])) == 0 ||
            strncmp(tokens[1], "312", strlen(tokens[1])) == 0 || strncmp(tokens[1], "313", strlen(tokens[1])) == 0 ||
            strncmp(tokens[1], "317", strlen(tokens[1])) == 0 || strncmp(tokens[1], "319", strlen(tokens[1])) == 0 ||
            strncmp(tokens[1], "320", strlen(tokens[1])) == 0 || strncmp(tokens[1], "671", strlen(tokens[1])) == 0 ||
            strncmp(tokens[1], "318", strlen(tokens[1])) == 0) {
          debugprint(DEBUG_FULL, "Server 307 RPL_SUSERHOST, 311 RPL_WHOISUSER, 312 RPL_WHOISSERVER, 313 (RPL_WHOISOPERATOR), 317 RPL_WHOISIDLE, "
                 "319 RPL_WHOISCHANNELS, 320 (RPL_WHOISSPECIAL), 671 (RPL_WHOISSECURE), or 318 RPL_ENDOFWHOIS found and it is: "
                 "%s with length %zd!  Sending to clients who are pending one of these.\n", tokens[1], strlen(tokens[1]));

          // Relay to all pending clients
          for (int i = 0; i < MAXCLIENTS; i++) {
            if (clients[i].pendingwhois == 1 && clients[i].fd) {
              sendtoclient(clients[i].fd, str, clients, settings, 0);
              // And clear the pending flag if it's 318 RPL_ENDOFWHOIS
              if (strncmp(tokens[1], "318", strlen(tokens[1])) == 0) {
                clients[i].pendingwhois = 0;
              }
            }
          }

          free(strcopyPtr);
          return 1;
        }

        // Server 314 (RPL_WHOWASUSER), 406 (ERR_WASNOSUCHNICK), or 369 (RPL_ENDOFWHOWAS) received?
        // Send to any clients who requested a WHOWAS.
        if (strncmp(tokens[1], "314", strlen(tokens[1])) == 0 || strncmp(tokens[1], "406", strlen(tokens[1])) == 0 || strncmp(tokens[1], "369", strlen(tokens[1])) == 0) {
          debugprint(DEBUG_FULL, "314 (RPL_WHOWASUSER), 406 (ERR_WASNOSUCHNICK), or 369 (RPL_ENDOFWHOWAS) "
                     "found and it is: %s with length %zd!  Sending to clients who are pending one of these.\n", tokens[1], strlen(tokens[1]));

          // Relay to all pending clients
          for (int i = 0; i < MAXCLIENTS; i++) {
            if (clients[i].pendingwhowas == 1 && clients[i].fd) {
              sendtoclient(clients[i].fd, str, clients, settings, 0);
              // And clear the pending flag if it's 369 RPL_ENDOFWHOWAS
              if (strncmp(tokens[1], "369", strlen(tokens[1])) == 0) {
                clients[i].pendingwhowas = 0;
              }
            }
          }

          free(strcopyPtr);
          return 1;
        }

        // Server 312 (RPL_WHOISSERVER) received?  Check to see if anyone was pending a WHOIS or a WHOWAS and send to them, if not send to everyone.
        if (strncmp(tokens[1], "312", strlen(tokens[1])) == 0) {
          debugprint(DEBUG_FULL, "Server 312 (RPL_WHOISSERVER) found and it is: %s with length %zd!  Sending to clients who are pending this or to everyone if nobody is.\n",
                     tokens[1], strlen(tokens[1]));

          int waspending = 0;

          // Relay to all pending clients
          for (int i = 0; i < MAXCLIENTS; i++) {
            if (clients[i].pendingwhois == 1 || clients[i].pendingwhowas == 1) {
              sendtoclient(clients[i].fd, str, clients, settings, 0);
              // Note that we were pending this
              waspending = 1;
            }
          }

          // If no client was pending this, send to everyone
          if (!waspending) {
            sendtoallclients(clients, str, 0, settings);
          }

          free(strcopyPtr);
          return 1;
        }


        // Server 401 (ERR_NOSUCHNICK) received?  Check to see if anyone was pending a WHOIS and send to them,
        // if not send to everyone (401 was probably in reply to something else like a PRIVMSG).
        if (strncmp(tokens[1], "401", strlen(tokens[1])) == 0) {
          debugprint(DEBUG_FULL, "Server 401 (ERR_NOSUCHNICK) found and it is: %s with length %zd!  Sending to clients who are pending this or to everyone if nobody is.\n",
                     tokens[1], strlen(tokens[1]));

          int waspending = 0;

          // Relay to all pending clients
          for (int i = 0; i < MAXCLIENTS; i++) {
            if (clients[i].pendingwhois == 1) {
              sendtoclient(clients[i].fd, str, clients, settings, 0);
              // Note that we were pending this
              waspending = 1;
            }
          }

          // If no client was pending this, send to everyone
          if (!waspending) {
            sendtoallclients(clients, str, 0, settings);
          }

          free(strcopyPtr);
          return 1;
        }

        // Server 432 (ERR_ERRONEUSNICKNAME) or 433 (ERR_NICKNAMEINUSE) received?  See which nick we're on and try another.
        // (But only if we're not already registered with the real IRC server.)
        if ((strncmp(tokens[1], "432", strlen(tokens[1])) == 0 || strncmp(tokens[1], "433", strlen(tokens[1])) == 0) && !strlen(ircdstrings->greeting004)) {
          debugprint(DEBUG_SOME, "Server 432 (ERR_ERRONEUSNICKNAME) or 433 (ERR_NICKNAMEINUSE) found and it is: %s with length %zd!  Trying another nick...\n",
                     tokens[1], strlen(tokens[1]));

          // Try to get nick2 and nick3 from the configuration file
          char nick2[MAXNICKLENGTH];
          char nick3[MAXNICKLENGTH];
          if (!getconfstr("nick2", settings->conffile, nick2)) {
            nick2[0] = '\0';
          }
          if (!getconfstr("nick3", settings->conffile, nick3)) {
            nick3[0] = '\0';
          }

          // Do we have both a nick2 and a nick3?  (And not tried autonick yet.)
          if (nick2[0] && nick3[0] && !ircdstrings->autonicknum) {
            // Has nick3 already been tried?
            if (strncmp(ircdstrings->ircnick, nick3, strlen(settings->ircnick)) == 0) {
              // Then try autonick
              tryautonick(ircdstrings);
            // Has nick2 already been tried?
            } else if (strncmp(ircdstrings->ircnick, nick2, strlen(settings->ircnick)) == 0) {
              // Then try nick3
              debugprint(DEBUG_SOME, "Trying nick3, nick2 was already tried.\n");
              strcpy(ircdstrings->ircnick, nick3);
            // Have neither been tried?
            } else {
              // Then try nick2
              debugprint(DEBUG_SOME, "Trying nick2, nick3 is also configured.\n");
              strcpy(ircdstrings->ircnick, nick2);
            }
          // Do we only have a nick2?  (And not tried autonick yet.)
          } else if (nick2[0] && !ircdstrings->autonicknum) {
            // Has it already been tried?
            if (strncmp(ircdstrings->ircnick, nick2, strlen(settings->ircnick)) == 0) {
              // Then try autonick
              tryautonick(ircdstrings);
            } else {
              // Then try it
              debugprint(DEBUG_SOME, "Trying nick2, nick3 is not configured.\n");
              strcpy(ircdstrings->ircnick, nick2);
            }
          // Do we have neither?  (Or have already started autonick.)
          } else {
            // Then try autonick
              tryautonick(ircdstrings);
          }

          // Set whichever one we settled on in the settings in case we reference settings later
          strcpy(settings->ircnick, ircdstrings->ircnick);

          // Try it with the server
          char outgoingmsg[MAXDATASIZE];
          snprintf(outgoingmsg, MAXDATASIZE, "NICK %s", ircdstrings->ircnick);
          // sourcefd = 0 as this is a trusted message
          sendtoserver(server_ssl, outgoingmsg, strlen(outgoingmsg), 0, clients, settings);

          free(strcopyPtr);
          return 1;
        }

        // Server CAP received?
        if (strncmp(tokens[1], "CAP", strlen(tokens[1])) == 0) {
          debugprint(DEBUG_FULL, "Server CAP found and it is: %s with length %zd!  Analysing...\n", tokens[1], strlen(tokens[1]));
          // If the server said "CAP <ournick> ACK :multi-prefix" then it must have approved our CAP multi-prefix request
          if (counter == 5) {
            if (strncmp(tokens[2], ircdstrings->ircnick, strlen(tokens[2])) == 0 &&
                strncmp(tokens[3], "ACK", strlen(tokens[3])) == 0 &&
                strncmp(tokens[4], ":multi-prefix", strlen(tokens[4])) == 0) {
              ircdstrings->capmultiprefix = 1;
            }
          }
          // We didn't handle it
          debugprint(DEBUG_FULL, "Unhandled server CAP response.\n");
        }

        // Server NOTICE received?  Handle and log if it's from a user, otherwise let pass through to default handler.
        if (strncmp(tokens[1], "NOTICE", strlen(tokens[1])) == 0) {
          debugprint(DEBUG_FULL, "Server NOTICE found and it is: %s with length %zd!  Analysing...\n", tokens[1], strlen(tokens[1]));
          // If the first token is a nick!user@host then it's probably from a user
          if (strstr(tokens[0], "!") != NULL && strstr(tokens[0], "@") != NULL) {
            debugprint(DEBUG_FULL, "Server NOTICE appears to be from a user, sending to all clients and logging.\n");

            sendtoallclients(clients, str, 0, settings);

            // Write to replay log if replay logging enabled
            if (settings->replaylogging) {
              writereplayline(str, settings->basedir);
            }

            // Write to normal log if logging enabled
            if (settings->logging) {
              logline(str, settings->ircnick, settings->basedir, LOG_PRIVMSG);
            }

            free(strcopyPtr);
            return 1;
          } else {
            debugprint(DEBUG_FULL, "Server NOTICE does not appear to be from a user, passing through.\n");
          }
        }
      }

      // Don't return if we got here because this means we didn't process something above

      break;
    case SOURCE_CLIENT: // If message(s) were from a real IRC client
      // PASS received?  User is trying to log in, check their password.
      if (strncasecmp(tokens[0], "PASS", strlen(tokens[0])) == 0) {
        if (checkpassword(tokens[1], settings->conffile)) {
          debugprint(DEBUG_FULL, "Password accepted!  Setting fd %d to authenticated.\n", sourcefd);
          // Find the client in the clients array and set them as authenticated
          for (int i = 0; i < MAXCLIENTS; i++) {
            if (clients[i].fd == sourcefd) {
              // Found client in array, set to authenticated
              clients[i].authed = 1;
              debugprint(DEBUG_FULL, "Found and authenticated fd in arr_authed.\n");
              // Alert other clients about the successful authentication
              char alertmsg[MAXDATASIZE];
              if (!snprintf(alertmsg, MAXDATASIZE, "NOTICE %s :blabouncer: new client with fd %d has successfully authenticated.", ircdstrings->ircnick, sourcefd)) {
                fprintf(stderr, "Error while preparing authentication success NOTICE!\n");
                debugprint(DEBUG_CRIT, "Error while preparing authentication success NOTICE!\n");
                alertmsg[0] = '\0';
              }
              // "except" the current fd - we can use this as "except/sourcefd" since we set them as authed just above
              sendtoallclients(clients, alertmsg, sourcefd, settings);
            }
          }
        } else {
          debugprint(DEBUG_SOME, "Password rejected, disconnecting fd %d.\n", sourcefd);
          disconnectclient(sourcefd, clients, ircdstrings, settings);
          // Alert other clients about the failed authentication
          char alertmsg[MAXDATASIZE];
          if (!snprintf(alertmsg, MAXDATASIZE, "NOTICE %s :blabouncer: new client with fd %d has failed to authenticate.", ircdstrings->ircnick, sourcefd)) {
            fprintf(stderr, "Error while preparing authentication failure NOTICE!\n");
            debugprint(DEBUG_CRIT, "Error while preparing authentication failure NOTICE!\n");
            alertmsg[0] = '\0';
          }
          // "except" 0 since we trust this message
          sendtoallclients(clients, alertmsg, 0, settings);
        }

        free(strcopyPtr);
        return 1;
      }

      // CAP received?  Clients can send CAP before PASS so we have to deal with this even if they are not authenticated yet.
      if (strncasecmp(tokens[0], "CAP", strlen(tokens[0])) == 0) {
        // But only do something if the real server told us it had a CAP (only multi-prefix for now)
        if (ircdstrings->capmultiprefix == 1) {
          debugprint(DEBUG_FULL, "Client CAP received and the server supports CAPs, continuing.\n");
        } else {
          debugprint(DEBUG_FULL, "Client CAP received but the server doesn't support CAPs, returning.\n");
          free(strcopyPtr);
          return 1;
        }
        // Get the real IRC server name from greeting001
        // They are now pending CAP negotiation
        clients[arrindex(clients, sourcefd)].pendingcap = 1;
        char outgoingmsg[MAXDATASIZE];
        // If client is requesting CAP list, send it...
        if (strncasecmp(tokens[1], "LS", strlen(tokens[1])) == 0) {
          if (!snprintf(outgoingmsg, MAXDATASIZE, ":%s CAP * LS :multi-prefix", ircdstrings->ircdname)) {
            fprintf(stderr, "Error while preparing CAP LS response!\n");
            debugprint(DEBUG_CRIT, "Error while preparing CAP LS response!\n");
            outgoingmsg[0] = '\0';
          }
          // ...even if unauthenticated
          sendtoclient(sourcefd, outgoingmsg, clients, settings, 1);
          free(strcopyPtr);
          return 1;
        // If client is requesting a CAP...
        } else if (strncasecmp(tokens[1], "REQ", strlen(tokens[1])) == 0) {
          // ...and it is "multi-prefix", send it
          if (strncasecmp(tokens[2], ":multi-prefix", strlen(tokens[2])) == 0) {
            if (!snprintf(outgoingmsg, MAXDATASIZE, ":%s CAP %s ACK :multi-prefix ", ircdstrings->ircdname, ircdstrings->ircnick)) {
              fprintf(stderr, "Error while preparing CAP ACK response!\n");
              debugprint(DEBUG_CRIT, "Error while preparing CAP ACK response!\n");
              outgoingmsg[0] = '\0';
            }
            // ...even if unauthenticated
            sendtoclient(sourcefd, outgoingmsg, clients, settings, 1);
            free(strcopyPtr);
            return 1;
          }
        // If client is finishing CAP negotiation then mark them as so
        } else if (strncasecmp(tokens[1], "END", strlen(tokens[1])) == 0) {
          clients[arrindex(clients, sourcefd)].pendingcap = -1;
        }
      }

      // We're past PASS in the list of possible commands, so ignore
      // anything else the client says if they are not authenticated yet.
      if (!clients[arrindex(clients, sourcefd)].authed) {
        debugprint(DEBUG_CRIT, "Ignoring client command '%s' from sourcefd '%d' as not authenticated yet.\n", tokens[0], sourcefd);
        free(strcopyPtr);
        return 1;
      }

      // USER received and not pending CAP negotiation during registration?
      // Or client has just finished negotiating CAP (pendingcap = -1)?
      // If so, assume this is a new client connecting and catch them on up on the state
      if ((strncasecmp(tokens[0], "USER", strlen(tokens[0])) == 0 && clients[arrindex(clients, sourcefd)].pendingcap == 0) || clients[arrindex(clients, sourcefd)].pendingcap == -1) {
        // Somewhere to store the several strings we will need to build and send
        char outgoingmsg[MAXDATASIZE]; // String to send to client

        // If registering then they must no longer be pending CAP negotiation
        clients[arrindex(clients, sourcefd)].pendingcap = 0;

        // Tell the client to go away if we aren't registered with the real server yet as defined by the last greeting not being set yet
        if (!strlen(ircdstrings->greeting004)) {
          sendtoclient(sourcefd, "Sorry, we aren't registered with a real IRC server yet.", clients, settings, 0);
          disconnectclient(sourcefd, clients, ircdstrings, settings);
          free(strcopyPtr);
          return 1;
        }

        // Send IRC greeting strings (001/RPL_WELCOME, 002/RPL_YOURHOST, 003/RPL_CREATED, 004/RPL_MYINFO, 005/RPL_ISUPPORT) to client
        snprintf(outgoingmsg, MAXDATASIZE, "%s", ircdstrings->greeting001);
        sendtoclient(sourcefd, outgoingmsg, clients, settings, 0);
        snprintf(outgoingmsg, MAXDATASIZE, "%s", ircdstrings->greeting002);
        sendtoclient(sourcefd, outgoingmsg, clients, settings, 0);
        snprintf(outgoingmsg, MAXDATASIZE, "%s", ircdstrings->greeting003);
        sendtoclient(sourcefd, outgoingmsg, clients, settings, 0);
        snprintf(outgoingmsg, MAXDATASIZE, "%s", ircdstrings->greeting004);
        sendtoclient(sourcefd, outgoingmsg, clients, settings, 0);
        if (ircdstrings->greeting005a[0]) {
          snprintf(outgoingmsg, MAXDATASIZE, "%s", ircdstrings->greeting005a);
          sendtoclient(sourcefd, outgoingmsg, clients, settings, 0);
        }
        if (ircdstrings->greeting005b[0]) {
          snprintf(outgoingmsg, MAXDATASIZE, "%s", ircdstrings->greeting005b);
          sendtoclient(sourcefd, outgoingmsg, clients, settings, 0);
        }
        if (ircdstrings->greeting005c[0]) {
          snprintf(outgoingmsg, MAXDATASIZE, "%s", ircdstrings->greeting005c);
          sendtoclient(sourcefd, outgoingmsg, clients, settings, 0);
        }

        // Send our own greeting message
        snprintf(outgoingmsg, MAXDATASIZE, "NOTICE %s :Welcome to blabouncer!", ircdstrings->ircnick);
        sendtoclient(sourcefd, outgoingmsg, clients, settings, 0);
        snprintf(outgoingmsg, MAXDATASIZE, "NOTICE %s :Blabouncer commands are all prefixed with BLABOUNCER which you can usually send using \"/QUOTE BLABOUNCER\"", ircdstrings->ircnick);
        sendtoclient(sourcefd, outgoingmsg, clients, settings, 0);
        snprintf(outgoingmsg, MAXDATASIZE, "NOTICE %s :Valid blabouncer commands are:", ircdstrings->ircnick);
        sendtoclient(sourcefd, outgoingmsg, clients, settings, 0);
        snprintf(outgoingmsg, MAXDATASIZE, "NOTICE %s :\"BLABOUNCER REPLAY [[[[days:]hours:]minutes:]seconds]\" (To replay a given length of time of replay log.)", ircdstrings->ircnick);
        sendtoclient(sourcefd, outgoingmsg, clients, settings, 0);
        snprintf(outgoingmsg, MAXDATASIZE, "NOTICE %s :\"BLABOUNCER QUIT [quit message]\" (To quit blabouncer, optionally sending [quit message] to the server.)", ircdstrings->ircnick);
        sendtoclient(sourcefd, outgoingmsg, clients, settings, 0);

        // Get the channel count so we can enumerate over all channels.
        // Storing separately so we can skip over blank channels.
        int channelcount = getchannelcount(channels);
        // Set the client as pending RPL_NAMREPLYs for 'channelcount' channels
        debugprint(DEBUG_FULL, "Setting pendingnames to '%d' for client with fd '%d'.\n", channelcount, sourcefd);
        clients[arrindex(clients, sourcefd)].pendingnames = channelcount;

        // Get client to join channels, and tell client about those channels
        for (int i = 0; i < channelcount; i++) {
          debugprint(DEBUG_FULL, "JOINing channel[%d] out of %d.\n", i, channelcount);
          // Skip this one and increment channelcount if it's a blank channel
          if (!channels[i].name[0]) {
              debugprint(DEBUG_FULL, "Skipping channel[%d], incrementing channelcount.\n", i);
              channelcount++;
              continue;
          }

          // Get client to join channels
          if (!snprintf(outgoingmsg, MAXDATASIZE, "%s JOIN :%s", ircdstrings->nickuserhost, channels[i].name)) {
            fprintf(stderr, "Error while preparing USER just connected, channel JOIN responses!\n");
            debugprint(DEBUG_CRIT, "Error while preparing USER just connected, channel JOIN responses!\n");
            free(strcopyPtr);
            return 0;
          }
          sendtoclient(sourcefd, outgoingmsg, clients, settings, 0);

          // Send topic (or lack thereof) to client
          // If there isn't one set (we guess this if topic timestamp is 0), send 331 RPL_NOTOPIC
          if (strncmp(channels[i].topicwhen, "0", 1) == 0) {
            // Prepare the no topic message...
            if (!snprintf(outgoingmsg, MAXDATASIZE, ":%s 331 %s %s :No topic is set.", ircdstrings->ircdname, ircdstrings->ircnick, channels[i].name)) {
              fprintf(stderr, "Error while preparing USER just connected, channel JOIN responses, 331 RPL_NOTOPIC!\n");
              debugprint(DEBUG_CRIT, "Error while preparing USER just connected, channel JOIN responses, 331 RPL_NOTOPIC!\n");
              free(strcopyPtr);
              return 0;
            }
            // ..and send it to the client
            sendtoclient(sourcefd, outgoingmsg, clients, settings, 0);
          // If there is one set, send 332 RPL_TOPIC and 333 RPL_TOPICWHOTIME
          } else {
            // Prepare the topic message...
            if (!snprintf(outgoingmsg, MAXDATASIZE, ":%s 332 %s %s :%s", ircdstrings->ircdname, ircdstrings->ircnick, channels[i].name, channels[i].topic)) {
              fprintf(stderr, "Error while preparing USER just connected, channel JOIN responses, 332 RPL_TOPIC!\n");
              debugprint(DEBUG_CRIT, "Error while preparing USER just connected, channel JOIN responses, 332 RPL_TOPIC!\n");
              free(strcopyPtr);
              return 0;
            }
            // ..and send it to the client
            sendtoclient(sourcefd, outgoingmsg, clients, settings, 0);

            // Next prepare the topic who/when message...
            if (!snprintf(outgoingmsg, MAXDATASIZE, ":%s 333 %s %s %s %s", ircdstrings->ircdname, ircdstrings->ircnick, channels[i].name, channels[i].topicwho, channels[i].topicwhen)) {
              fprintf(stderr, "Error while preparing USER just connected, channel JOIN responses, 333 RPL_TOPICWHOTIME!\n");
              debugprint(DEBUG_CRIT, "Error while preparing USER just connected, channel JOIN responses, 333 RPL_TOPICWHOTIME!\n");
              free(strcopyPtr);
              return 0;
            }
            // ..and send it to the client
            sendtoclient(sourcefd, outgoingmsg, clients, settings, 0);
          }

          // Get the latest RPL_NAMREPLY for this channel to relay to the client when it arrives
          char namesreq[MAXDATASIZE];
          snprintf(namesreq, MAXDATASIZE, "NAMES %s", channels[i].name);
          sendtoserver(server_ssl, namesreq, strlen(namesreq), 0, clients, settings);
        }

        // Send our mode to the client (if we have one)
        if (strlen(ircdstrings->mode) > 0) {
          if (!snprintf(outgoingmsg, MAXDATASIZE, ":%s MODE %s %s", ircdstrings->ircnick, ircdstrings->ircnick, ircdstrings->mode)) {
            fprintf(stderr, "Error while preparing USER just connected, MODE response!\n");
            debugprint(DEBUG_CRIT, "Error while preparing USER just connected, MODE response!\n");
            free(strcopyPtr);
            return 0;
          }
          sendtoclient(sourcefd, outgoingmsg, clients, settings, 0);
        }

        // Set the client as registered
        clients[arrindex(clients, sourcefd)].registered = 1;

        // Catch the client up with the default number of seconds of replay
        if (!doreplay(sourcefd, settings->replayseconds, clients, settings, ircdstrings, channels)) {
          snprintf(outgoingmsg, MAXDATASIZE, "NOTICE %s :Unable to read replay log file!", ircdstrings->ircnick);
          sendtoclient(sourcefd, outgoingmsg, clients, settings, 0);
        }

        free(strcopyPtr);
        return 1;
      }

      // Pretty much ignore anything else the client says if it's not registered yet,
      // as the first thing we want to hear is either PASS or USER
      if (!clients[arrindex(clients, sourcefd)].registered) {
        debugprint(DEBUG_SOME, "Ignoring client command '%s' from sourcefd '%d' as not registered yet.\n", tokens[0], sourcefd);
        free(strcopyPtr);
        return 1;
      }

      // Client PING received?  If so, send a PONG back with the next element as the argument.
      if (strncasecmp(tokens[0], "PING", strlen(tokens[0])) == 0) {
        debugprint(DEBUG_FULL, "Client PING found and it is: %s with length %zd!  Sending response...\n", tokens[0], strlen(tokens[0]));

        char outgoingmsg[MAXDATASIZE]; // String to send to client
        if (!snprintf(outgoingmsg, MAXDATASIZE, "PONG %s", tokens[1])) { // TODO - Make sure tokens[1] actually has a token
          fprintf(stderr, "Error while preparing PONG response!\n");
          debugprint(DEBUG_CRIT, "Error while preparing PONG response!\n");
          outgoingmsg[0] = '\0';
        }
        sendtoclient(sourcefd, outgoingmsg, clients, settings, 0);

        // We processed something so return true
        free(strcopyPtr);
        return 1;
      }

      // TODO - Ignoring CAP for now so as not to confuse other clients, but we should probably query the server then relay the response to the client
      if (strncasecmp(tokens[0], "CAP", strlen(tokens[0])) == 0) {
        debugprint(DEBUG_FULL, "Client CAP found and it is: %s with length %zd!  Ignoring completely for now - TODO - do something useful!\n", tokens[0], strlen(tokens[0]));
        free(strcopyPtr);
        return 1;
      }

      // Just send NICK to server and let it change all clients' nicks if needed
      if (strncasecmp(tokens[0], "NICK", strlen(tokens[0])) == 0) {
        debugprint(DEBUG_FULL, "Client NICK found and it is: %s with length %zd!  Sending to server...\n", tokens[0], strlen(tokens[0]));
        sendtoserver(server_ssl, str, strlen(str), sourcefd, clients, settings);
        free(strcopyPtr);
        return 1;
      }

      // If PRIVMSG received, send to server, but also reformat and send to all other clients and log to replay file.
      if (strncasecmp(tokens[0], "PRIVMSG", strlen(tokens[0])) == 0) {
        debugprint(DEBUG_FULL, "Client PRIVMSG found and it is: %s with length %zd!  Sending to server then back to other clients...\n", tokens[0], strlen(tokens[0]));
        // Send original request straight to server
        sendtoserver(server_ssl, str, strlen(str), sourcefd, clients, settings);

        // If it seems to be a CTCP VERSION request, just send to the server (CTCP requests are delimited with \1)
        if (counter == 3 && strncmp(tokens[2], ":\1VERSION\1", strlen(tokens[2])) == 0) {
          debugprint(DEBUG_FULL, "Client PRIVMSG looked like a CTCP VERSION request, so not sending to other clients.\n");
          free(strcopyPtr);
          return 1;
        }

        // Rebuild to full PRIVMSG string and relay to all other clients
        char outgoingmsg[MAXDATASIZE]; // String to send to client

        if (!snprintf(outgoingmsg, MAXDATASIZE, "%s %s", ircdstrings->nickuserhost, str)) {
          fprintf(stderr, "Error while preparing PRIVMSG relay from another bouncer client.\n");
          debugprint(DEBUG_CRIT, "Error while preparing PRIVMSG relay from another bouncer client.\n");
          free(strcopyPtr);
          return 0;
        }
        // Send to all except source client
        sendtoallclients(clients, outgoingmsg, sourcefd, settings);

        // Write to replay log if replay logging enabled
        if (settings->replaylogging) {
          writereplayline(outgoingmsg, settings->basedir);
        }

        // Write to normal log if logging enabled
        if (settings->logging) {
          logline(outgoingmsg, settings->ircnick, settings->basedir, LOG_PRIVMSG);
        }

        free(strcopyPtr);
        return 1;
      }

      // Just send JOIN to server and let it talk back to clients as required
      if (strncasecmp(tokens[0], "JOIN", strlen(tokens[0])) == 0) {
        debugprint(DEBUG_FULL, "Client JOIN found and it is: %s with length %zd!  Sending to server...\n", tokens[0], strlen(tokens[0]));
        sendtoserver(server_ssl, str, strlen(str), sourcefd, clients, settings);
        free(strcopyPtr);
        return 1;
      }

      // Don't do anything with QUIT, just let the client go - TODO: Let another clients know with a NOTICE or something
      // A client has QUIT, so disconnect (close) them and don't do anything else for now - TODO: Let another clients know with a NOTICE or something
      if (strncasecmp(tokens[0], "QUIT", strlen(tokens[0])) == 0) {
        debugprint(DEBUG_FULL, "Client QUIT found from fd %d and it is: %s with length %zd!  Disconnecting that fd.\n", sourcefd, tokens[0], strlen(tokens[0]));
        disconnectclient(sourcefd, clients, ircdstrings, settings);
        free(strcopyPtr);
        return 1;
      }

      // Just send PART to server and let it talk back to clients as required
      if (strncasecmp(tokens[0], "PART", strlen(tokens[0])) == 0) {
        debugprint(DEBUG_FULL, "Client PART found and it is: %s with length %zd!  Sending to server...\n", tokens[0], strlen(tokens[0]));
        sendtoserver(server_ssl, str, strlen(str), sourcefd, clients, settings);
        free(strcopyPtr);
        return 1;
      }

      // Just send TOPIC to server and let it talk back to clients as required
      if (strncasecmp(tokens[0], "TOPIC", strlen(tokens[0])) == 0) {
        debugprint(DEBUG_FULL, "Client TOPIC found and it is: %s with length %zd!  Sending to server...\n", tokens[0], strlen(tokens[0]));
        sendtoserver(server_ssl, str, strlen(str), sourcefd, clients, settings);
        free(strcopyPtr);
        return 1;
      }

      // Take note of what sort of MODE was requested, mark the client as waiting for the reply (so not all clients get it)
      // Send it to the server either way and let it talk back to the requesting client as required
      if (strncasecmp(tokens[0], "MODE", strlen(tokens[0])) == 0) {
        debugprint(DEBUG_FULL, "Client MODE found and it is: %s with length %zd!  Analysing...\n", tokens[0], strlen(tokens[0]));
        // Is it a ban MODE request (MODE #channel b)?
        if (counter >= 3 && strncmp(tokens[2], "b", strlen("b")) == 0) {
          debugprint(DEBUG_FULL, "Ban MODE request received, marking as pending.\n");
          clients[arrindex(clients, sourcefd)].pendingban = 1;
        } else if (counter == 2) {
          // Assume a normal channel mode request (MODE #channel) - TODO - What if it isn't!?
          debugprint(DEBUG_FULL, "Assuming channel MODE request received, marking as pending.\n");
          clients[arrindex(clients, sourcefd)].pendingchannelmode = 1;
        }

        // Either way, send it on the server
        sendtoserver(server_ssl, str, strlen(str), sourcefd, clients, settings);
        free(strcopyPtr);
        return 1;
      }

      // WHO requested, mark the client as waiting for the reply (so not all clients get it) and send it on the server
      if (strncasecmp(tokens[0], "WHO", strlen(tokens[0])) == 0) {
        debugprint(DEBUG_FULL, "Client WHO found and it is: %s with length %zd!  Marking as pending.\n", tokens[0], strlen(tokens[0]));
        clients[arrindex(clients, sourcefd)].pendingwho = 1;

        // Either way, send it on the server
        sendtoserver(server_ssl, str, strlen(str), sourcefd, clients, settings);
        free(strcopyPtr);
        return 1;
      }

      // LIST requested, mark the client as waiting for the reply (so not all clients get it) and send it on the server
      if (strncasecmp(tokens[0], "LIST", strlen(tokens[0])) == 0) {
        debugprint(DEBUG_FULL, "Client LIST found and it is: %s with length %zd!  Marking as pending.\n", tokens[0], strlen(tokens[0]));
        clients[arrindex(clients, sourcefd)].pendinglist = 1;

        // Either way, send it on the server
        sendtoserver(server_ssl, str, strlen(str), sourcefd, clients, settings);
        free(strcopyPtr);
        return 1;
      }

      // Client WHOIS received, send straight on to server and mark the client as pending the response
      if (strncasecmp(tokens[0], "WHOIS", strlen(tokens[0])) == 0) {
        debugprint(DEBUG_FULL, "Client WHOIS found and it is: %s with length %zd!  Sending to server and setting client as pending.\n", tokens[0], strlen(tokens[0]));
        clients[arrindex(clients, sourcefd)].pendingwhois = 1;
        sendtoserver(server_ssl, str, strlen(str), sourcefd, clients, settings);
        free(strcopyPtr);
        return 1;
      }

      // Client WHOWAS received, send straight on to server and mark the client as pending the response
      if (strncasecmp(tokens[0], "WHOWAS", strlen(tokens[0])) == 0) {
        debugprint(DEBUG_FULL, "Client WHOWAS found and it is: %s with length %zd!  Sending to server and setting client as pending.\n", tokens[0], strlen(tokens[0]));
        clients[arrindex(clients, sourcefd)].pendingwhowas = 1;
        sendtoserver(server_ssl, str, strlen(str), sourcefd, clients, settings);
        free(strcopyPtr);
        return 1;
      }

      // Client NOTICE received
      if (strncasecmp(tokens[0], "NOTICE", strlen(tokens[0])) == 0) {

        // Rebuild to full NOTICE string including our nick!user@host for logging
        char fullmsg[MAXDATASIZE];

        if (!snprintf(fullmsg, MAXDATASIZE, "%s %s", ircdstrings->nickuserhost, str)) {
          fprintf(stderr, "Error while preparing NOTICE string for logging.\n");
          debugprint(DEBUG_CRIT, "Error while preparing NOTICE string for logging.\n");
          free(strcopyPtr);
          return 0;
        }

        // Write to replay log if replay logging enabled
        if (settings->replaylogging) {
          writereplayline(fullmsg, settings->basedir);
        }

        // Write to normal log if logging enabled
        if (settings->logging) {
          logline(fullmsg, settings->ircnick, settings->basedir, LOG_PRIVMSG);
        }

        // If it's a CTCP VERSION response then only send to the server (CTCP requests are delimited with \1)
        if (counter >= 3 && strncmp(tokens[2], ":\1VERSION", strlen(tokens[2])) == 0) {
          debugprint(DEBUG_FULL, "Client NOTICE looked like a CTCP VERSION response, so just sending to the server.\n");
          sendtoserver(server_ssl, str, strlen(str), sourcefd, clients, settings);
          free(strcopyPtr);
          return 1;
        }

        // If it wasn't a CTCP VERSION response, then let this fall through to the default unhandled action by not returning here
      }

      // Custom BLABOUNCER command received
      // Case insensitive comparisons here since clients won't be recognising and uppercasing these commands
      if (strncasecmp(tokens[0], "BLABOUNCER", strlen(tokens[0])) == 0) {
        char outgoingmsg[MAXDATASIZE];
        debugprint(DEBUG_FULL, "Client BLABOUNCER found and it is: %s with length %zd!\n", tokens[1], strlen(tokens[1]));
        // REPLAY received, send the requested length of replay time to the client
        if (strncasecmp(tokens[1], "REPLAY", strlen("REPLAY")) == 0) {
          debugprint(DEBUG_FULL, "Client BLABOUNCER REPLAY (custom blabouncer command) found and it is: %s with length %zd!\n", tokens[1], strlen(tokens[1]));

          // Split the request into days:hours:minutes:seconds

          // Track which colon-separated token within this request we're on
          int timecounter = 0;

          // Build array of colon-separated tokens
          char timetokens[MAXTOKENS][MAXDATASIZE];
          // Copy to a temporary string so we still have the original in case it's not processed
          char *timestrcopy = strdup(tokens[2]);
          // Keep track of initial pointer for free()ing later
          char *timestrcopyPtr = timestrcopy;

          char *timetoken;
          while ((timetoken = strsep(&timestrcopy, ":")) != NULL) {
            if (*timetoken == '\0') continue; // Skip consecutive matches
            if (timecounter >= MAXTOKENS) break; // Too many tokens
            debugprint(DEBUG_FULL, "Time token: \"%s\", length %zd.\n", timetoken, strlen(timetoken));
            // Copy into the token array (strlen + 1 to get the NULL terminator)
            strncpy(timetokens[timecounter], timetoken, strlen(timetoken) + 1);
            timecounter++;
          }

          // Make sure we don't have more than four (d:h:m:s) components
          if (timecounter > 4) {
            debugprint(DEBUG_SOME, "Too many time components requested by REPLAY command.  Telling client.\n");
            snprintf(outgoingmsg, MAXDATASIZE, "NOTICE %s :Too many time components requestd by REPLAY command.  Expected up to four (days:hours:minutes:seconds).", ircdstrings->ircnick);
            sendtoclient(sourcefd, outgoingmsg, clients, settings, 0);
            free(timestrcopyPtr);
            free(strcopyPtr);
            return 1;
          }

          // Make sure all the components are numbers
          for (int i = 0; i < timecounter; i++) {
            // Temporary number and pointer for checking errors
            long check;
            char *str_end;
            errno = 0;
            check = strtol(timetokens[i], &str_end, 10);
            if (str_end == timetokens[i] || ((check == LONG_MAX || check == LONG_MIN) && errno == ERANGE)) {
              debugprint(DEBUG_SOME, "Invalid number '%s' requested by REPLAY command.  Telling client.\n", timetokens[i]);
              if (!snprintf(outgoingmsg, MAXDATASIZE, "NOTICE %s :Invalid number '%s' requested by REPLAY command.", ircdstrings->ircnick, timetokens[i])) {
                fprintf(stderr, "Error while preparing REPLAY invalid number response!\n");
                debugprint(DEBUG_CRIT, "Error while preparing REPLAY invalid number response!\n");
                outgoingmsg[0] = '\0';
              }
              sendtoclient(sourcefd, outgoingmsg, clients, settings, 0);
              free(timestrcopyPtr);
              free(strcopyPtr);
              return 1;
            }
          }

          // How many seconds we're going to replay
          int replayseconds = 0;

          // If d:h:m:s provided
          if (timecounter == 4) {
            replayseconds += 86400 * strtol(timetokens[0], NULL, 10);
            replayseconds += 3600 * strtol(timetokens[1], NULL, 10);
            replayseconds += 60 * strtol(timetokens[2], NULL, 10);
            replayseconds += strtol(timetokens[3], NULL, 10);
          }
          // If h:m:s provided
          if (timecounter == 3) {
            replayseconds += 3600 * strtol(timetokens[0], NULL, 10);
            replayseconds += 60 * strtol(timetokens[1], NULL, 10);
            replayseconds += strtol(timetokens[2], NULL, 10);
          }
          // If m:s provided
          if (timecounter == 2) {
            replayseconds += 60 * strtol(timetokens[0], NULL, 10);
            replayseconds += strtol(timetokens[1], NULL, 10);
          }
          // If s provided
          if (timecounter == 1) {
            replayseconds += strtol(timetokens[0], NULL, 10);
          }

          debugprint(DEBUG_FULL, "Replaying '%s' which is '%d' seconds.\n", tokens[2], replayseconds);

          if (!doreplay(sourcefd, replayseconds, clients, settings, ircdstrings, channels)) {
            snprintf(outgoingmsg, MAXDATASIZE, "NOTICE %s :Unable to read replay log file!", ircdstrings->ircnick);
            sendtoclient(sourcefd, outgoingmsg, clients, settings, 0);
          }
          free(timestrcopyPtr);
          free(strcopyPtr);
          return 1;
        // QUIT received, send QUIT message to server and exit cleanly
        } else if (strncasecmp(tokens[1], "QUIT", strlen("QUIT")) == 0) {
          debugprint(DEBUG_SOME, "Client BLABOUNCER QUIT found and it is: %s with length %zd!\n", tokens[1], strlen(tokens[1]));
          // Combine "QUIT :" with any optional quit message the user provided
          if (counter > 2) {
            // Any optional quit message comes 16 characters after the start of the string ("BLABOUNCER QUIT " is 16 characters)
            cleanexit(server_ssl, clients, sourcefd, ircdstrings, settings, str + 16);
          } else {
            cleanexit(server_ssl, clients, sourcefd, ircdstrings, settings, "");
          }

        // Unrecognised BLABOUNCER command received, send some help instructions
        } else {
          debugprint(DEBUG_SOME, "Client BLABOUNCER unrecognised command found and it is: %s with length %zd!  Sending a help message.\n", tokens[1], strlen(tokens[1]));
          snprintf(outgoingmsg, MAXDATASIZE, "NOTICE %s :Unrecognised BLABOUNCER command received.  Valid commands are:", ircdstrings->ircnick);
          sendtoclient(sourcefd, outgoingmsg, clients, settings, 0);
          snprintf(outgoingmsg, MAXDATASIZE, "NOTICE %s :\"BLABOUNCER REPLAY [[[[days:]hours:]minutes:]seconds]\" (To replay a given length of time of replay log.)", ircdstrings->ircnick);
          sendtoclient(sourcefd, outgoingmsg, clients, settings, 0);
          snprintf(outgoingmsg, MAXDATASIZE, "NOTICE %s :\"BLABOUNCER QUIT [quit message]\" (To quit blabouncer, optionally sending [quit message] to the server.)", ircdstrings->ircnick);
          sendtoclient(sourcefd, outgoingmsg, clients, settings, 0);
          free(strcopyPtr);
          return 1;
        }
      }

      break;
    default:
      fprintf(stderr, "Unexpected raw IRC string source!\n");
      debugprint(DEBUG_CRIT, "Unexpected raw IRC string source!\n");
      free(strcopyPtr);
      return 0;
  }
  // =============================================>


  debugprint(DEBUG_FULL, "Done with processircmessage()\n");

  // If we got here then we didn't process anything
  free(strcopyPtr);
  return 0;
}

// Figure out what the client or server sent and decide what to do with it (if anything)
// First by splitting out the different messages by CRLF, process if we know how to,
// or send on to all other clients (if from the server) or to the server (if from a client)
// if we don't know how to.
//
// serversockfd, clientsockfd, fdmax, arr_clients, arr_authed all passed to here so we can
// send/relay a response to server or (other) client(s) for things we don't know how to process here,
// or for any other reasons we need to send stuff for
//
// str is the raw string
//
// source is either 0 (SOURCE_SERVER) (server - from the real IRC server) or 1 (SOURCE_CLIENT) (client - from a real IRC client)
//
// Return 0 if something went wrong
// Return 1 if everything OK
int processrawstring(SSL *server_ssl, char *str, int source, struct client *clients, int sourcefd, struct ircdstrings *ircdstrings, struct channel *channels, struct settings *settings) {
  // Copy to a temporary string so we still have the original in case it's not processed
  char *strcopy = strdup(str);
  // Keep track of initial pointer for free()ing later
  char *strcopyPtr = strcopy;

  debugprint(DEBUG_FULL, "processrawstring(): Source type %d sent: \"%s\".  Processing it...\n", source, strcopy);

  // Track which CLRF-separated message within this string we're on
  int messagecount = 0;

  // Build array of each space-separated token
  char messages[MAXTOKENS][MAXDATASIZE];

  // Split the string by CRLF and add each CRLF-separated IRC message to an array
  char *token;

  while ((token = strsep(&strcopy, "\r\n")) != NULL) {
    if (*token == '\0') continue; // Skip consecutive matches
    if (messagecount >= MAXTOKENS) break; // Too many tokens
    debugprint(DEBUG_FULL, "String Token: \"%s\", length %zd.\n", token, strlen(token));
    // Copy into the token array (strlen + 1 to get the NULL terminator)
    strncpy(messages[messagecount], token, strlen(token) + 1);
    messagecount++;
  }

  free(strcopyPtr);

  // If there is a previous possibly truncated message still in the holding area, the prepend that to the first message of this new lot
  // (Only if source was the server since we always strip \r\n from client messages when recving - TODO - Should we be doing that?
  if (ircdstrings->currentmsg[0] && source == SOURCE_SERVER) {
    // Make a copy since we can't have source and destination the same with snprintf
    char *strtmp = strdup(messages[0]);
    debugprint(DEBUG_FULL, "processrawstring(): Previous truncated message detected, combining old '%s' with new '%s'...\n", ircdstrings->currentmsg, strtmp);
    snprintf(messages[0], strlen(ircdstrings->currentmsg) + strlen(strtmp) + 1, "%s%s", ircdstrings->currentmsg, strtmp);
    messages[0][strlen(ircdstrings->currentmsg) + strlen(strtmp)] = '\0'; // Make sure it's null terminated
    debugprint(DEBUG_FULL, "...into new string '%s' and clearing currentmsg holding area.\n", messages[0]);
    ircdstrings->currentmsg[0] = '\0';
    free(strtmp);
  }

  // If the final characters of the raw string weren't \r\n then assume the final token is a truncated message
  // Copy to a holding area for continuation next time
  // (Only if source was the server since we always strip \r\n from client messages when recving - TODO - Should we be doing that?
  if ((str[strlen(str)-2] != 13 || str[strlen(str)-1] != 10) && source == SOURCE_SERVER) {
    debugprint(DEBUG_FULL, "processrawstring(): Truncated message detected, storing final token '%s' for later.\n", messages[messagecount - 1]);
    strncpy(ircdstrings->currentmsg, messages[messagecount - 1], strlen(messages[messagecount - 1]));
    ircdstrings->currentmsg[strlen(messages[messagecount - 1])] = '\0';
    // Remove it from the message count so it's not processed time time
    messagecount--;
  } else {
    // Otherwise, clear the holding area
    ircdstrings->currentmsg[0] = '\0';
  }

  // Go through each message, figure out what it is and if we're doing anything with it
  for (int i = 0; i < messagecount; i++) {
    // Copy to a temporary string so we still have the original in case it's not processed
    char *messagecopy = strdup(messages[i]);
    if (processircmessage(server_ssl, messagecopy, source, clients, sourcefd, ircdstrings, channels, settings)) {
      debugprint(DEBUG_FULL, "Message processed: \"%s\", NULLing...\n", messages[i]);
      messages[i][0] = '\0';
    }
    free(messagecopy);
  }

  // Deal with any unprocessed messages (send on to server/client(s) since we haven't dealt with them)
  for (int i = 0; i < messagecount; i++) {
    if (messages[i][0] != '\0') {
      debugprint(DEBUG_FULL, "Message %d (\"%s\") remains unprocessed...\n", i, messages[i]);
      switch(source) {
        case SOURCE_SERVER: // If message(s) were from the real IRC server
          // Relay/send to all clients ("except" = 0 because this should send to all clients)
          // TODO - Is this really going to send the original string if we have messed it with it in processrawstring() and friends!?
          debugprint(DEBUG_FULL, "bouncer-server: sending unprocessed server message '%s' to all clients, length %zd.\n", messages[i], strlen(messages[i]));
          sendtoallclients(clients, messages[i], EXCEPT_NONE, settings);
          break;
        case SOURCE_CLIENT: // If message(s) were from a real IRC client
          // Send to server
          debugprint(DEBUG_FULL, "bouncer-client: sending unprocessed client message '%s' to the server, length %zd.\n", messages[i], strlen(messages[i]));
          sendtoserver(server_ssl, messages[i], strlen(messages[i]), sourcefd, clients, settings);

          debugprint(DEBUG_FULL, "bouncer-client: sending unprocessed client message '%s' to all other clients, length %zd.\n", messages[i], strlen(messages[i]));
          // send the same thing to all *other* clients (all except for source fd)
          sendtoallclients(clients, messages[i], sourcefd, settings);
          break;
        default:
          fprintf(stderr, "Unexpected raw IRC string source for unprocessed message \"%s\", length %zd.!\n", messages[i], strlen(messages[i]));
          debugprint(DEBUG_CRIT, "Unexpected raw IRC string source for unprocessed message \"%s\", length %zd.!\n", messages[i], strlen(messages[i]));
          return 0;
      }
    }
  }

  debugprint(DEBUG_FULL, "Done with processrawstring()\n");

  return 1;
}

// Where the big bouncing loop is
void dochat(int *serversockfd, int *clientsockfd, struct settings *settings) {
  char serverbuf[MAXRCVSIZE]; // buffer for receiving data on server socket
  char clientbuf[MAXRCVSIZE]; // buffer for receiving data on client socket(s)
  int servernumbytes; // Number of bytes received from remote server

  int fdmax; // highest numbered socket fd

  socklen_t addrlen; // client remote address size
  char remoteIP[INET6_ADDRSTRLEN]; // remote IP (assume up to IPv6 size)
  int newfd;  // newly accept()ed socket descriptor
  struct sockaddr_storage remoteaddr; // client address
  int clientnumbytes;

  fdmax = *clientsockfd; // keep track of highest fd number, currently client socket as created last (after server socket)

  fd_set rfds; // set of read fds to monitor with pselect() - 0: stdin, 1: stdout, 2: stderr, 3 and higher: sockets (at time of writing, 3: real IRC server, 4: client listener, 5 and higher: clients)

  // Set up clients structure
  struct client clients[MAXCLIENTS];

  // Set all the clients to be "not connected", "not authenticated", "not registered", "not pending replies"
  for (int i = 0; i < MAXCLIENTS; i++) {
    clients[i].fd = 0;
    clients[i].authed = 0;
    clients[i].registered = 0;
    clients[i].pendingchannelmode = 0;
    clients[i].pendingban = 0;
    clients[i].pendingwho = 0;
    clients[i].pendinglist = 0;
    clients[i].pendingwhois = 0;
    clients[i].pendingwhowas = 0;
    clients[i].pendingnames = 0;
    clients[i].pendingcap = 0;
  }

  // Struct of various strings from and for the real IRCd (such as the greeting strings, the real IRCd's name,
  // our nick!user@host string, our nick, username, real name, etc.)
  struct ircdstrings ircdstrings;

  // Struct of channels we're in
  struct channel *channels;
  channels = malloc(sizeof(struct channel) * MAXCHANNELS);
  // Set initial channel names to empty strings
  for (int i = 0; i < MAXCHANNELS; i++) {
    channels[i].name[0] = '\0';
  }

  // Initialise OpenSSL (used for both client and server)
  init_openssl();

  // OpenSSL for server side if configured
  SSL_CTX *serverctx = NULL;
  SSL *server_ssl = NULL; // Need to create this either way as referenced later

  // Set reconnection things to null/zero for now (not used unless reconnecting to server)
  ircdstrings.oldnick[0] = '\0';
  ircdstrings.reconnecting = 0;
  connecttoircserver(&serverctx, &server_ssl, serversockfd, &ircdstrings, settings, clients);

  // OpenSSL context for client side (that clients connect to) (need to create this whether or not using TLS as it is referenced later)
  SSL_CTX *ctx;

  // If using client TLS
  if (settings->clienttls) {
    // Set up and configure client OpenSSL context
    ctx = create_openssl_context(SOURCE_CLIENT);
    configure_openssl_context(ctx, settings->certfile, settings->keyfile);
  }

  // Let's set up signal handling stuff here since we're about to enter The Big Loop (TM)
  // We'll handle SIGINT (Ctrl-C) and SIGTERM (default signal of `kill`)
  signal(SIGINT, sighandler); // SIGINT (2)
  signal(SIGTERM, sighandler); // SIGTERM (15)

  // Block those two signals
  sigset_t sigset, oldset;
  sigemptyset(&sigset);
  sigaddset(&sigset, SIGINT);
  sigaddset(&sigset, SIGTERM);
  sigprocmask(SIG_BLOCK, &sigset, &oldset);

  while (1) {
    debugprint(DEBUG_FULL, "top of loop, fdmax %d.\n", fdmax);
    FD_ZERO(&rfds); // clear entries from fd set

     // Add STDIN (fd 0) to read fds to monitor if we're not in background/daemon mode
    if (!settings->background) {
      FD_SET(STDIN, &rfds);
    }
    FD_SET(*serversockfd, &rfds); // add our server network socket to monitor
    FD_SET(*clientsockfd, &rfds); // add our client network socket to monitor

    // Add all connected clients to monitor (only add ones that are connected (clients[i] > 0))
    // TODO - make sure *serversockfd stays at the same value (probably 3?) in all cases - what if the server disconnects/reconnects/etc.
    // TODO - now that only connected clients are monitored, perhaps tracking using both fdmax and num_client loops is unnecessary?
    for (int i = 0; i < MAXCLIENTS; i++) {
      if (clients[i].fd > 0) {
        debugprint(DEBUG_FULL, "monitoring fd %d.\n", clients[i].fd);
        FD_SET(clients[i].fd, &rfds);
      }
    }

    // Before we wait for a message, let's make sure the server is still responding
    // TODO - Code duplication, make a function and share with socket error code below
    if (ircdstrings.lastmessagetime < time(NULL) - SERVERTIMEOUT) {
      printf("Server has timed out (%ld seconds), reconnecting!\n", time(NULL) - ircdstrings.lastmessagetime);
      // Tell all clients if we timed out
      char alertmsg[MAXDATASIZE];
      snprintf(alertmsg, MAXDATASIZE, "NOTICE %s :Server has timed out (%ld seconds), reconnecting!", ircdstrings.ircnick, time(NULL) - ircdstrings.lastmessagetime);
      sendtoallclients(clients, alertmsg, 0, settings);
      if (settings->servertls) {
        // Finish up with OpenSSL if using server TLS
        SSL_free(server_ssl);
      }
      // Close the socket
      close(*serversockfd);
      // Make a new one
      *serversockfd = createserversocket(settings->ircserver, settings->ircserverport);

      // Set reconnection marker for other functions to know we're reconnecting
      ircdstrings.reconnecting = 1;
      // Set oldnick in case we change nick when reconnecting so we can inform existing clients
      strcpy(ircdstrings.oldnick, ircdstrings.ircnick);
      connecttoircserver(&serverctx, &server_ssl, serversockfd, &ircdstrings, settings, clients);

      // Back to top of loop
      continue;
    }

    debugprint(DEBUG_FULL, "pselect()ing...\n");
    // Check to see if any fd in the fd_set is waiting or a signal happened - blocks here until one one of those things happens
    // (pselect() to do signal handling in additiona to fd monitoring)
    if (pselect(fdmax + 1, &rfds, NULL, NULL, NULL, &oldset) < 0) { // network socket + 1, rfds, no writes, no exceptions/errors, no timeout, original sigmask
      if (errno == EINTR) {
        // Signal caught, do signal handling
        debugprint(DEBUG_CRIT, "signal '%d' happened, exiting!\n", signum);
        if (signum == SIGINT) {
          cleanexit(server_ssl, clients, 0, &ircdstrings, settings, "SIGINT received");
        } else if (signum == SIGTERM) {
          cleanexit(server_ssl, clients, 0, &ircdstrings, settings, "SIGTERM received");
        } else {
          cleanexit(server_ssl, clients, 0, &ircdstrings, settings, "Unexpected signal received");
        }
      } else {
        // Some other error
        perror("pselect");
        debugprint(DEBUG_CRIT, "pselect() error, errno '%d'.\n", errno);
        continue;
      }
    }

    // TODO - switch around the serversockfd and STDIN FD_ISSET if-statements?  They feel the wrong way round.  Are they like this on purpose?  I can't remember.
    // (although actually stdin may go once its not wanted for possible direct interaction for debugging)

    // See if there's anything to read from the server side (the real IRCd)
    if (FD_ISSET(*serversockfd, &rfds)) {
      debugprint(DEBUG_FULL, "reading server socket!\n");

      if ((servernumbytes = sockread(server_ssl, serverbuf, MAXRCVSIZE - 1, settings->servertls)) == -1) {
        perror("recv");
        printf("receive error (-1), skipping loop iteration...\n");
        debugprint(DEBUG_CRIT, "serversockfd receive error (-1), skipping loop iteration, errno '%d'.\n");
      } else if (servernumbytes == 0) {
        perror("recv");
        printf("socket closed (or no data received) (0), skipping loop iteration...\n");
        debugprint(DEBUG_CRIT, "serversockfd socket closed (or no data received) (0), skipping loop iteration, errno '%d'.\n");
      }

      // If there was a socket error (receive error or socket closed)
      // TODO - Code duplication, make a function and share with timeout code above
      if (servernumbytes < 1) {
        printf("Server socket had an error (sockread return code %d), reconnecting!\n", servernumbytes);
        // Tell all clients if we timed out
        char alertmsg[MAXDATASIZE];
        snprintf(alertmsg, MAXDATASIZE, "NOTICE %s :Server socket had an error (sockread return code %d), reconnecting!", ircdstrings.ircnick, servernumbytes);
        sendtoallclients(clients, alertmsg, 0, settings);
        if (settings->servertls) {
          // Finish up with OpenSSL if using server TLS
          SSL_free(server_ssl);
        }
        // Close the socket
        close(*serversockfd);
        // Make a new one
        *serversockfd = createserversocket(settings->ircserver, settings->ircserverport);

        // Set reconnection marker for other functions to know we're reconnecting
        ircdstrings.reconnecting = 1;
        // Set oldnick in case we change nick when reconnecting so we can inform existing clients
        strcpy(ircdstrings.oldnick, ircdstrings.ircnick);
        connecttoircserver(&serverctx, &server_ssl, serversockfd, &ircdstrings, settings, clients);

        // Back to top of loop
        continue;
      }

      serverbuf[servernumbytes] = '\0';

      debugprint(DEBUG_SOME, "BOUNCER-SERVER RECEIVED: '%s', length '%d'.\n", serverbuf, servernumbytes);

      // Try to process received string (which should contain one or more server responses/commands)
      // TODO - What if there were two server respones/commands and only one didn't need relaying?
      if (!processrawstring(server_ssl, serverbuf, SOURCE_SERVER, clients, EXCEPT_NONE, &ircdstrings, channels, settings)) {
        fprintf(stderr, "Error: bouncer-server failed to process raw string.\n");
        debugprint(DEBUG_CRIT, "Error: bouncer-server failed to process raw string.\n");
      }
    }

    // see if there's anything from stdin (unless we're in background/daemon mode)
    if (!settings->background && FD_ISSET(STDIN, &rfds)) {
      debugprint(DEBUG_FULL, "reading stdin!\n");

      char outgoingmsg[MAXDATASIZE]; // String to send to server
      int outgoingmsgrc; // Return code from getstdin() for outgoing message

      outgoingmsgrc = getstdin(NULL, outgoingmsg, sizeof(outgoingmsg));

      if (outgoingmsgrc == NO_INPUT) {
        printf("\nError!  No input.\n");
      } else if (outgoingmsgrc == TOO_LONG) {
        printf ("Error!  Too long.  Would have allowed up to: [%s]\n", outgoingmsg);
      }

      // STDIN based commands for debugging
      if (strncmp(outgoingmsg, "listchannels", strlen("listchannels")) == 0) {
        printf("STDIN command starting: listchannels\n");

        int channelcount = getchannelcount(channels);

        for (int i = 0; i < channelcount; i++) {
          printf("Checking channel[%d] out of %d.\n", i, channelcount);
          // Skip this one and increment channelcount if it's a blank channel
          if (!channels[i].name[0]) {
              debugprint(DEBUG_FULL, "Skipping channel[%d], incrementing channelcount.\n", i);
              channelcount++;
              continue;
          }

          printf("Found channel '%s'.\n", channels[i].name);
        }

        printf("STDIN command complete: listchannels\n");
        continue;
      }

      // sourcefd = 0 as this is a trusted message
      sendtoserver(server_ssl, outgoingmsg, strlen(outgoingmsg), 0, clients, settings);
    }

    // go through all the remaining sockets to see if there's anything from the client sockets (either new connections or existing clients sending messages)
    // (clear newfd before doing this so we can tell if we're querying a new client or not)
    newfd = 0;
    for (int i = *clientsockfd; i <= fdmax; i++) {
      // skip if newfd is the current iteration of this loop, since we know we have just accept()ed it
      if (i == newfd) {
        continue;
      }
      debugprint(DEBUG_FULL, "checking client socket %d out of %d.\n", i, fdmax);
      if (FD_ISSET(i, &rfds)) {
        debugprint(DEBUG_FULL, "fd %d is FD_ISSET and it is a...\n", i);
        // if value of clientsockfd then must be a new connection, if greater must be an existing connection
        if (i == *clientsockfd) {
          debugprint(DEBUG_SOME, "...new connection!\n");
          // handle new connections
          if (numclients(clients) >= MAXCLIENTS) {
            fprintf(stderr, "too many clients, disconnecting and skipping loop iteration!\n");
            debugprint(DEBUG_CRIT, "too many clients, disconnecting and skipping loop iteration!\n");
            disconnectclient(i, clients, &ircdstrings, settings);
            continue;
          }
          addrlen = sizeof remoteaddr;
          newfd = accept(*clientsockfd, (struct sockaddr *)&remoteaddr, &addrlen);
          if (newfd == -1) {
            // something went wrong when accept()ing
            perror("accept");
          } else {
            FD_SET(newfd, &rfds); // add to master set // TODO - needed?  going to be re-done at the top anyway...
            if (newfd > fdmax) {    // keep track of the max
              fdmax = newfd;
            }
            // Find a free element in the clients array and set to new fd value
            for (int j = 0; j < MAXCLIENTS; j++) {
                if (clients[j].fd == 0) {
                  clients[j].fd = newfd;
                  // Ensure its authentication status is set to 0
                  clients[j].authed = 0;
                  // If using TLS then...
                  if (settings->clienttls) {
                    // ...set as OpenSSL FD and SSL_accept it
                    clients[j].ssl = SSL_new(ctx);
                    SSL_set_fd(clients[j].ssl, newfd);
                    if (SSL_accept(clients[j].ssl) <= 0) {
                      debugprint(DEBUG_CRIT, "SSL_accept failed for fd %d.\n", clients[j].fd);
                      ERR_print_errors_fp(stderr);
                    } else {
                      debugprint(DEBUG_FULL, "SSL_accept succeeded for fd %d.\n", clients[j].fd);
                    }
                  } else {
                    // If not using TLS then cast newfd to SSL* even though it will just be the original newfd int really
                    clients[j].ssl = (SSL*)(long int)newfd;
                  }
                  break;
                }
            }
            // TODO - Handle the "find a free element" loop not finding a free element
            debugprint(DEBUG_FULL, "bouncer-client: new connection from %s on socket %d\n",
                       inet_ntop(remoteaddr.ss_family, get_in_addr((struct sockaddr*)&remoteaddr),
                       remoteIP, INET6_ADDRSTRLEN), newfd);
            // Alert other clients about the new connection
            char alertmsg[MAXDATASIZE];
            if (!snprintf(alertmsg, MAXDATASIZE, "NOTICE %s :blabouncer: new client connected from %s with fd %d.", ircdstrings.ircnick,
                          inet_ntop(remoteaddr.ss_family, get_in_addr((struct sockaddr*)&remoteaddr), remoteIP, INET6_ADDRSTRLEN), newfd)) {
              fprintf(stderr, "Error while preparing new client connection NOTICE!\n");
              debugprint(DEBUG_CRIT, "Error while preparing new client connection NOTICE!\n");
              alertmsg[0] = '\0';
            }
            // "except" 0 since we trust this message
            sendtoallclients(clients, alertmsg, 0, settings);
            debugprint(DEBUG_FULL, "bouncer-client: total client connections: %d\n", numclients(clients));
          }
        } else {
          debugprint(DEBUG_FULL, "...previous connection!\n");
          // handle data from a client
          if ((clientnumbytes = sockread(clients[arrindex(clients, i)].ssl, clientbuf, sizeof clientbuf, settings->clienttls)) <= 0) {
            // got error or connection closed by client
            if (clientnumbytes == 0) {
              // connection closed
              debugprint(DEBUG_SOME, "bouncer-client: socket %d hung up\n", i);
            } else {
              perror("recv");
              debugprint(DEBUG_CRIT, "bouncer-client: socket error, clientnum bytes '%d', errno '%d'.\n", clientnumbytes, errno);
            }
            // Disconnect the client
            disconnectclient(i, clients, &ircdstrings, settings);
            FD_CLR(i, &rfds); // remove from master set - TODO is this needed at the moment since we just add everything from *clientsockfd to fdmax to rfds
            // TODO - Handle the "remove the client" loop not finding the old fd
            debugprint(DEBUG_FULL, "bouncer-client: total client connections: %d\n", numclients(clients));
          } else {
            // we got some data from a client
            // null terminate that baby
            clientbuf[clientnumbytes] = '\0'; // TODO make sure this can't overrun if some super long line (max bytes?) was received
            // clear up any newlines - TODO - Should we be doing this?  If not, we can stop only doing truncation checks for the server in processrawstring().
            while (clientbuf[strlen(clientbuf) - 1] == '\n' || clientbuf[strlen(clientbuf) - 1] == '\r') {
              clientbuf[strlen(clientbuf) - 1] = '\0';
            }
            debugprint(DEBUG_SOME, "BOUNCER-CLIENT RECEIVED: '%s'\n", clientbuf);

            // Try to process received string (which should contain one or more client responses/commands)
            // TODO - What if there were two server respones/commands and only one didn't need relaying?
            if (!processrawstring(server_ssl, clientbuf, SOURCE_CLIENT, clients, i, &ircdstrings, channels, settings)) {
              fprintf(stderr, "Error: bouncer-client failed to process raw string.\n");
              debugprint(DEBUG_CRIT, "Error: bouncer-client failed to process raw string.\n");
            }
          }
        }
      }
    }
  }

  free(channels);
}

int main(int argc, char *argv[]) {
  // Structure of our various settings which are to either be read from the configuration file or set at runtime
  struct settings settings;

  // Terminate our global debug file string in case it's referenced before being read from file
  debugpath[0] = '\0';

  // Assume background/daemon mode unless specified otherwise on the command line
  settings.background = 1;
  // Set configuration file to string to blank for now
  settings.conffile[0] = '\0';

  // Check to see what was specified on the command line
  // TODO - Do better command line argument handling (no required order)
  char helptext[] = "usage: %s [-f] [-c /path/to/blabouncer.conf] (-f for foreground mode)\n";
  if (argc == 2) {
    if (strcmp(argv[1], "-f")) {
      fprintf(stderr, helptext, argv[0]);
      exit(1);
    } else {
      settings.background = 0;
    }
  } else if (argc == 3) {
    if (strcmp(argv[1], "-c")) {
      fprintf(stderr, helptext, argv[0]);
      exit(1);
    } else {
      strcpy(settings.conffile, argv[2]);
    }
  } else if (argc == 4) {
    if (strcmp(argv[1], "-f") || strcmp(argv[2], "-c")) {
      fprintf(stderr, helptext, argv[0]);
      exit(1);
    } else {
      settings.background = 0;
      strcpy(settings.conffile, argv[3]);
    }
  } else if (argc > 4) {
    fprintf(stderr, helptext, argv[0]);
    exit(1);
  }

  // If a configuration file wasn't set on the command line, set it now
  if (!settings.conffile[0]) {
    snprintf(settings.conffile, PATH_MAX, "%s/.blabouncer/blabouncer.conf", getenv("HOME"));
    // Since this is the default, it might not exist yet, so let's check...
    struct stat st = {0};
    if (stat(settings.conffile, &st) == -1) {
      // ...it doesn't exist, so let's create it
      printf("Creating default configuration file '%s'.\n", settings.conffile);
      createconfigfile(settings.conffile);
    }
  }

  // Populate settings from configuration file

  // How many seconds of replay log should automatically be replayed - TODO - Can we do error checking on this?
  settings.replayseconds = getconfint("replayseconds", settings.conffile);
  if (errno == ECONFINT) {
    printf("main(): error getting 'replayseconds' from configuration file.\n");
    exit(1);
  }

  // What port should the bouncer listen on
  if (!getconfstr("clientport", settings.conffile, settings.clientport)) {
    printf("main(): error getting 'clientport' from configuration file.\n");
    exit(1);
  }

  // What is the configured nick?
  if (!getconfstr("nick", settings.conffile, settings.ircnick)) {
    printf("main(): error getting 'nick' from configuration file.\n");
    exit(1);
  }

  // What is the configured username?
  if (!getconfstr("username", settings.conffile, settings.ircusername)) {
    printf("main(): error getting 'username' from configuration file.\n");
    exit(1);
  }

  // What is the configured real name?
  if (!getconfstr("realname", settings.conffile, settings.ircrealname)) {
    printf("main(): error getting 'realname' from configuration file.\n");
    exit(1);
  }

  // What, if anything, are the configured auto channels?
  if (!getconfstr("channels", settings.conffile, settings.autochannels)) {
    settings.autochannels[0] = '\0';
  } else {
    // If something was set, make sure it's not too long
    if (strlen(settings.autochannels) >= MAXAUTOCHANLEN) {
      printf("main(): 'channels' option in configuration file is too long.\n");
      exit(1);
    }
  }

  // What is the real IRC server address?
  if (!getconfstr("ircserver", settings.conffile, settings.ircserver)) {
    printf("main(): error getting 'ircserver' from configuration file.\n");
    exit(1);
  }

  // What is the real IRC server port?
  if (!getconfstr("ircserverport", settings.conffile, settings.ircserverport)) {
    printf("main(): error getting 'ircserverport' from configuration file.\n");
    exit(1);
  }

  // What is the real IRC server password, if any?
  if (!getconfstr("ircserverpassword", settings.conffile, settings.ircserverpassword)) {
    settings.ircserverpassword[0] = '\0';
  }

  // What is the connect command, if any?
  if (!getconfstr("connectcommand", settings.conffile, settings.connectcommand)) {
    settings.connectcommand[0] = '\0';
  }

  // Is the base directory set?  If not, use the default.
  if (!getconfstr("basedir", settings.conffile, settings.basedir)) {
    snprintf(settings.basedir, PATH_MAX, "%s/.blabouncer/", getenv("HOME"));
  }

  // Should the bouncer use TLS for the IRC server?
  settings.servertls = getconfint("servertls", settings.conffile);
  if (errno == ECONFINT) {
    printf("main(): error getting 'servertls' from configuration file.\n");
    exit(1);
  }

  // Should the bouncer use TLS for clients?
  settings.clienttls = getconfint("clienttls", settings.conffile);
  if (errno == ECONFINT) {
    printf("main(): error getting 'clienttls' from configuration file.\n");
    exit(1);
  }

  // If so, load the certificates
  if (settings.clienttls) {
    // What is the certificate file path?
    if (!getconfstr("certfile", settings.conffile, settings.certfile)) {
      // If none provided, set to default
      if (!snprintf(settings.certfile, PATH_MAX, "%s/cert.pem", settings.basedir)) {
        fprintf(stderr, "Error while preparing default certfile location!\n");
        exit(1);
      }
    }

    // What is the certificate key file path?
    if (!getconfstr("keyfile", settings.conffile, settings.keyfile)) {
      // If none provided, set to default
      if (!snprintf(settings.keyfile, PATH_MAX, "%s/key.pem", settings.basedir)) {
        fprintf(stderr, "Error while preparing default certfile location!\n");
        exit(1);
      }
    }
  }

  // Make sure the base directory exists
  struct stat st = {0};
  if (stat(settings.basedir, &st) == -1) {
    if (mkdir(settings.basedir, 0700)) {
      printf("Error creating base directory '%s'.\n", settings.basedir);
      exit(1);
    } else {
      printf("Created base directory '%s'.\n", settings.basedir);
    }
  }

  // Is logging enabled?
  settings.logging = getconfint("logging", settings.conffile);
  if (errno == ECONFINT) {
    printf("main(): error getting 'logging' from configuration file.\n");
    exit(1);
  }

  // Is replay logging enabled?
  settings.replaylogging = getconfint("replaylogging", settings.conffile);
  if (errno == ECONFINT) {
    printf("main(): error getting 'replaylogging' from configuration file.\n");
    exit(1);
  }

  // How many debug logs should we keep?
  settings.debugkeep = getconfint("debugkeep", settings.conffile);
  if (errno == ECONFINT) {
    printf("main(): error getting 'debugkeep' from configuration file.\n");
    exit(1);
  }

  // Is debugging enabled?
  debug = getconfint("debug", settings.conffile);
  if (errno == ECONFINT) {
    printf("main(): error getting 'debug' from configuration file.\n");
    exit(1);
  }
  if (!snprintf(debugpath, PATH_MAX, "%s/debug/debug.txt", settings.basedir)) {
    fprintf(stderr, "Error while preparing debug path location!\n");
    exit(1);
  }
  // debugfile goes in its own directory
  char debugdir[PATH_MAX];
  if (!snprintf(debugdir, PATH_MAX, "%s/debug/", settings.basedir)) {
    fprintf(stderr, "Error while preparing debug path location!\n");
    exit(1);
  }

  // Make sure the debug directory exists
  if (stat(debugdir, &st) == -1) {
    if (mkdir(debugdir, 0700)) {
      printf("Error creating debug directory '%s'.\n", debugdir);
      exit(1);
    } else {
      printf("Created debug directory '%s'.\n", debugdir);
    }
  }
  // Prepare the debug file
  // (Keep settings.debugkeep number of debug files around for past debugging)
  if (settings.debugkeep > 0) {
    // Check each possible debug file and rename it to one higher
    char tmppath[PATH_MAX];
    char tmppathnew[PATH_MAX];
    // Delete or rename numbered debug files first
    for (int i = settings.debugkeep; i > 0; i--) {
      if (!snprintf(tmppath, PATH_MAX - 1, "%s.%d", debugpath, i)) {
        fprintf(stderr, "Error while preparing to check old debug files!\n");
        exit(1);
      }
      if (!access(tmppath, F_OK)) {
        if (i == settings.debugkeep) {
          if (remove(tmppath)) {
            printf("error deleting old debug file '%s'.\n", tmppath);
            exit(1);
          }
        } else {
          if (!snprintf(tmppathnew, PATH_MAX - 1, "%s.%d", debugpath, i + 1)) {
            fprintf(stderr, "Error while preparing to rename old debug file!\n");
            exit(1);
          }
          if (rename(tmppath, tmppathnew)) {
            printf("error renaming old debug file '%s' to '%s'.\n", tmppath, tmppathnew);
            exit(1);
          }
        }
      }
    }
    // Rename the previous debug file next
    if (!access(debugpath, F_OK)) {
      if (rename(debugpath, tmppath)) {
        printf("error renaming old debug file '%s' to '%s'.\n", debugpath, tmppath);
        exit(1);
      }
    }
  }

  // Write a friendly debug message to file (even if debug to file is disabled)
  // Prepare a friendly time string
  time_t rawtime;
  struct tm * timeinfo;
  time(&rawtime);
  timeinfo = localtime(&rawtime);
  // Strip the trailing newline
  char timestr[MAXCHAR];
  snprintf(timestr, MAXCHAR, "%s", asctime(timeinfo));
  timestr[strlen(timestr) - 1] = '\0';
  // Note the old debug setting
  int debugold = debug;
  // Temporarily enable debugging to file
  debug = 1;
  // Print it
  debugprint(DEBUG_CRIT, "blabouncer started at %s, debugging is set to %d.\n", timestr, debugold);
  // Set debugging back to whatever it was
  debug = debugold;

  debugprint(DEBUG_SOME, "Using configuration file '%s'.\n", settings.conffile);

  // Unless specified otherwise on the command line, fork to background
  if (settings.background) {
    pid_t pid, sid;
    // Fork from parent
    if ((pid = fork()) < 0) {
      printf("Couldn't fork, exiting.\n");
      debugprint(DEBUG_CRIT, "Couldn't fork, exiting.\n");
      exit(1);
    }
    // Exit parent (pid will be > 0 for the child)
    if (pid > 0) {
      exit(0);
    }
    umask(0);
    // Let child become process group leader
    if ((sid = setsid()) < 0) {
      printf("Couldn't setsid() child, exiting.\n");
      debugprint(DEBUG_CRIT, "Couldn't setsid() child, exiting.\n");
      exit(1);
    }
    // In case our cwd changes
    chdir("/");
    // TODO - close() STDIN_FILENO, STDOUT_FILENO, STDERR_FILENO here, might need to change fd number
    // logic/assumptions elsewhere (such as fd 3 being server, fd 4 being clients, etc.)
  }

  // TODO: see if any of this can be shared (i.e. 1. avoid code duplication, and 2. see if variables can be shared between client/server sockets)

  // I will try to keep to the notation of "server" meaning the real IRCd, "bouncer" meaning the bouncer, and "client" meaning the real IRC client

  // Create server socket
  int serversockfd = createserversocket(settings.ircserver, settings.ircserverport);

  // Create client socket (after server so we can use its fd number later as fdmax)
  int clientsockfd = createclientsocket(settings.clientport);

  dochat(&serversockfd, &clientsockfd, &settings);

  printf("dochat() complete, closing socket...\n");

  close(serversockfd);

  return 0;
}