modules/m_pass.c

   1 /*
   2  *  ircd-ratbox: A slightly useful ircd.
   3  *  m_pass.c: Used to send a password for a server or client{} block.
   4  *
   5  *  Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center
   6  *  Copyright (C) 1996-2002 Hybrid Development Team
   7  *  Copyright (C) 2002-2005 ircd-ratbox development team
   8  *
   9  *  This program is free software; you can redistribute it and/or modify
  10  *  it under the terms of the GNU General Public License as published by
  11  *  the Free Software Foundation; either version 2 of the License, or
  12  *  (at your option) any later version.
  13  *
  14  *  This program is distributed in the hope that it will be useful,
  15  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  *  GNU General Public License for more details.
  18  *
  19  *  You should have received a copy of the GNU General Public License
  20  *  along with this program; if not, write to the Free Software
  21  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
  22  *  USA
  23  */
  24
  25 #include "stdinc.h"
  26 #include "client.h"             /* client struct */
  27 #include "match.h"
  28 #include "send.h"               /* sendto_one */
  29 #include "numeric.h"            /* ERR_xxx */
  30 #include "ircd.h"               /* me */
  31 #include "msg.h"
  32 #include "parse.h"
  33 #include "modules.h"
  34 #include "s_serv.h"
  35 #include "hash.h"
  36 #include "s_conf.h"
  37
  38 static const char pass_desc[] = "Provides the PASS command to authenticate clients and servers";
  39
  40 static void mr_pass(struct MsgBuf *, struct Client *, struct Client *, int, const char **);
  41
  42 struct Message pass_msgtab = {
  43         "PASS", 0, 0, 0, 0,
  44         {{mr_pass, 2}, mg_reg, mg_ignore, mg_ignore, mg_ignore, mg_reg}
  45 };
  46
  47 mapi_clist_av1 pass_clist[] = { &pass_msgtab, NULL };
  48
  49 DECLARE_MODULE_AV2(pass, NULL, NULL, pass_clist, NULL, NULL, NULL, NULL, pass_desc);
  50
  51 /*
  52  * m_pass() - Added Sat, 4 March 1989
  53  *
  54  *
  55  * mr_pass - PASS message handler
  56  *      parv[1] = password
  57  *      parv[2] = "TS" if this server supports TS.
  58  *      parv[3] = optional TS version field -- needed for TS6
  59  */
  60 static void
  61 mr_pass(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
  62 {
  63         char *auth_user, *pass, *buf;
  64         buf = LOCAL_COPY(parv[1]);
  65
  66         if(client_p->localClient->passwd || client_p->localClient->auth_user)
  67                 return;
  68
  69         if ((pass = strchr(buf, ':')) != NULL)
  70         {
  71                 *pass++ = '\0';
  72                 auth_user = buf;
  73         }
  74         else
  75         {
  76                 pass = buf;
  77                 auth_user = NULL;
  78         }
  79
  80         client_p->localClient->passwd = *pass ? rb_strndup(pass, PASSWDLEN) : NULL;
  81
  82         if(auth_user && *auth_user)
  83                 client_p->localClient->auth_user = rb_strndup(auth_user, PASSWDLEN);
  84
  85         /* These are for servers only */
  86         if(parc > 2 && client_p->user == NULL && client_p->preClient != NULL)
  87         {
  88                 /*
  89                  * It looks to me as if orabidoo wanted to have more
  90                  * than one set of option strings possible here...
  91                  * i.e. ":AABBTS" as long as TS was the last two chars
  92                  * however, as we are now using CAPAB, I think we can
  93                  * safely assume if there is a ":TS" then its a TS server
  94                  * -Dianora
  95                  */
  96                 if(irccmp(parv[2], "TS") == 0 && client_p->tsinfo == 0)
  97                         client_p->tsinfo = TS_DOESTS;
  98
  99                 if(parc == 5 && atoi(parv[3]) >= 6)
 100                 {
 101                         /* only mark as TS6 if the SID is valid.. */
 102                         if(IsDigit(parv[4][0]) && IsIdChar(parv[4][1]) &&
 103                            IsIdChar(parv[4][2]) && parv[4][3] == '\0' &&
 104                            EmptyString(client_p->preClient->id))
 105                         {
 106                                 client_p->localClient->caps |= CAP_TS6;
 107                                 rb_strlcpy(client_p->preClient->id, parv[4], sizeof(client_p->preClient->id));
 108                         }
 109                 }
 110         }
 111 }