users.cpp

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/*       +------------------------------------+
 *       | Inspire Internet Relay Chat Daemon |
 *       +------------------------------------+
 *
 *  Inspire is copyright (C) 2002-2004 ChatSpike-Dev.
 *                       E-mail:
 *                <brain@chatspike.net>
 *                <Craig@chatspike.net>
 *     
 * Written by Craig Edwards, Craig McLure, and others.
 * This program is free but copyrighted software; see
 *            the file COPYING for details.
 *
 * ---------------------------------------------------
 */

using namespace std;

#include "inspircd_config.h" 
#include "channels.h"
#include "connection.h"
#include "users.h"
#include "inspircd.h"
#include <stdio.h>
#ifdef THREADED_DNS
#include <pthread.h>
#include <signal.h>
#endif
#include "inspstring.h"
#include "commands.h"
#include "helperfuncs.h"

extern ServerConfig* Config;
extern time_t TIME;

userrec::userrec()
{
        // the PROPER way to do it, AVOID bzero at *ALL* costs
        strcpy(nick,"");
        strcpy(ip,"127.0.0.1");
        timeout = 0;
        strcpy(ident,"");
        strcpy(host,"");
        strcpy(dhost,"");
        strcpy(fullname,"");
        strcpy(modes,"");
        server = (char*)FindServerNamePtr(Config->ServerName);
        strcpy(awaymsg,"");
        strcpy(oper,"");
        reset_due = TIME;
        lines_in = 0;
        fd = lastping = signon = idle_lastmsg = nping = registered = 0;
        flood = port = bytes_in = bytes_out = cmds_in = cmds_out = 0;
        haspassed = false;
        dns_done = false;
        recvq = "";
        sendq = "";
        chans.clear();
        invites.clear();
}

userrec::~userrec()
{
}

void userrec::CloseSocket()
{
        shutdown(this->fd,2);
        close(this->fd);
}
 
char* userrec::GetFullHost()
{
        static char result[MAXBUF];
        snprintf(result,MAXBUF,"%s!%s@%s",nick,ident,dhost);
        return result;
}

int userrec::ReadData(void* buffer, size_t size)
{
        if (this->fd > -1)
        {
                return read(this->fd, buffer, size);
        }
        else return 0;
}


char* userrec::GetFullRealHost()
{
        static char fresult[MAXBUF];
        snprintf(fresult,MAXBUF,"%s!%s@%s",nick,ident,host);
        return fresult;
}

bool userrec::IsInvited(char* channel)
{
        for (InvitedList::iterator i = invites.begin(); i != invites.end(); i++)
        {
                if (i->channel) {
                        if (!strcasecmp(i->channel,channel))
                        {
                                return true;
                        }
                }
        }
        return false;
}

InvitedList* userrec::GetInviteList()
{
        return &invites;
}

void userrec::InviteTo(char* channel)
{
        Invited i;
        strlcpy(i.channel,channel,CHANMAX);
        invites.push_back(i);
}

void userrec::RemoveInvite(char* channel)
{
        log(DEBUG,"Removing invites");
        if (channel)
        {
                if (invites.size())
                {
                        for (InvitedList::iterator i = invites.begin(); i != invites.end(); i++)
                        {
                                if (i->channel)
                                {
                                        if (!strcasecmp(i->channel,channel))
                                        {
                                                invites.erase(i);
                                                return;
                                        }
                                }
                        }
                }
        }
}

bool userrec::HasPermission(char* command)
{
        char TypeName[MAXBUF],Classes[MAXBUF],ClassName[MAXBUF],CommandList[MAXBUF];
        char* mycmd;
        char* savept;
        char* savept2;
        
        // users on u-lined servers can completely bypass
        // all permissions based checks.
        //
        // of course, if this is sent to a remote server and this
        // server is not ulined there, then that other server
        // silently drops the command.
        if (is_uline(this->server))
                return true;
        
        // are they even an oper at all?
        if (strchr(this->modes,'o'))
        {
                for (int j =0; j < Config->ConfValueEnum("type",&Config->config_f); j++)
                {
                        Config->ConfValue("type","name",j,TypeName,&Config->config_f);
                        if (!strcmp(TypeName,this->oper))
                        {
                                Config->ConfValue("type","classes",j,Classes,&Config->config_f);
                                char* myclass = strtok_r(Classes," ",&savept);
                                while (myclass)
                                {
                                        for (int k =0; k < Config->ConfValueEnum("class",&Config->config_f); k++)
                                        {
                                                Config->ConfValue("class","name",k,ClassName,&Config->config_f);
                                                if (!strcmp(ClassName,myclass))
                                                {
                                                        Config->ConfValue("class","commands",k,CommandList,&Config->config_f);
                                                        mycmd = strtok_r(CommandList," ",&savept2);
                                                        while (mycmd)
                                                        {
                                                                if ((!strcasecmp(mycmd,command)) || (*mycmd == '*'))
                                                                {
                                                                        return true;
                                                                }
                                                                mycmd = strtok_r(NULL," ",&savept2);
                                                        }
                                                }
                                        }
                                        myclass = strtok_r(NULL," ",&savept);
                                }
                        }
                }
        }
        return false;
}


bool userrec::AddBuffer(std::string a)
{
        std::string b = "";
        for (unsigned int i = 0; i < a.length(); i++)
                if ((a[i] != '\r') && (a[i] != '\0') && (a[i] != 7))
                        b = b + a[i];
        std::stringstream stream(recvq);
        stream << b;
        recvq = stream.str();
        unsigned int i = 0;
        // count the size of the first line in the buffer.
        while (i < recvq.length())
        {
                if (recvq[i++] == '\n')
                        break;
        }
        if (recvq.length() > (unsigned)this->recvqmax)
        {
                this->SetWriteError("RecvQ exceeded");
                WriteOpers("*** User %s RecvQ of %d exceeds connect class maximum of %d",this->nick,recvq.length(),this->recvqmax);
        }
        // return false if we've had more than 600 characters WITHOUT
        // a carriage return (this is BAD, drop the socket)
        return (i < 600);
}

bool userrec::BufferIsReady()
{
        for (unsigned int i = 0; i < recvq.length(); i++)
                if (recvq[i] == '\n')
                        return true;
        return false;
}

void userrec::ClearBuffer()
{
        recvq = "";
}

std::string userrec::GetBuffer()
{
        if (recvq == "")
                return "";
        char* line = (char*)recvq.c_str();
        std::string ret = "";
        while ((*line != '\n') && (strlen(line)))
        {
                ret = ret + *line;
                line++;
        }
        if ((*line == '\n') || (*line == '\r'))
                line++;
        recvq = line;
        return ret;
}

void userrec::AddWriteBuf(std::string data)
{
        if (this->GetWriteError() != "")
                return;
        if (sendq.length() + data.length() > (unsigned)this->sendqmax)
        {
                WriteOpers("*** User %s SendQ of %d exceeds connect class maximum of %d",this->nick,sendq.length() + data.length(),this->sendqmax);
                this->SetWriteError("SendQ exceeded");
                return;
        }
        std::stringstream stream;
        stream << sendq << data;
        sendq = stream.str();
}

// send AS MUCH OF THE USERS SENDQ as we are able to (might not be all of it)
void userrec::FlushWriteBuf()
{
        if (sendq.length())
        {
                char* tb = (char*)this->sendq.c_str();
                int n_sent = write(this->fd,tb,this->sendq.length());
                if (n_sent == -1)
                {
                        this->SetWriteError(strerror(errno));
                }
                else
                {
                        // advance the queue
                        tb += n_sent;
                        this->sendq = tb;
                        // update the user's stats counters
                        this->bytes_out += n_sent;
                        this->cmds_out++;
                }
        }
}

void userrec::SetWriteError(std::string error)
{
        log(DEBUG,"Setting error string for %s to '%s'",this->nick,error.c_str());
        // don't try to set the error twice, its already set take the first string.
        if (this->WriteError == "")
                this->WriteError = error;
}

std::string userrec::GetWriteError()
{
        return this->WriteError;
}

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