modules/m_oper.c

   1 /*
   2  *  ircd-ratbox: A slightly useful ircd.
   3  *  m_oper.c: Makes a user an IRC Operator.
   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"
  27 #include "common.h"
  28 #include "match.h"
  29 #include "ircd.h"
  30 #include "numeric.h"
  31 #include "s_conf.h"
  32 #include "s_newconf.h"
  33 #include "logger.h"
  34 #include "s_user.h"
  35 #include "send.h"
  36 #include "msg.h"
  37 #include "parse.h"
  38 #include "modules.h"
  39 #include "packet.h"
  40 #include "cache.h"
  41
  42 static const char oper_desc[] = "Provides the OPER command to become an IRC operator";
  43
  44 static void m_oper(struct MsgBuf *, struct Client *, struct Client *, int, const char **);
  45
  46 static bool match_oper_password(const char *password, struct oper_conf *oper_p);
  47
  48 struct Message oper_msgtab = {
  49         "OPER", 0, 0, 0, 0,
  50         {mg_unreg, {m_oper, 3}, mg_ignore, mg_ignore, mg_ignore, {m_oper, 3}}
  51 };
  52
  53 mapi_clist_av1 oper_clist[] = { &oper_msgtab, NULL };
  54
  55 DECLARE_MODULE_AV2(oper, NULL, NULL, oper_clist, NULL, NULL, NULL, NULL, oper_desc);
  56
  57 /*
  58  * m_oper
  59  *      parv[1] = oper name
  60  *      parv[2] = oper password
  61  */
  62 static void
  63 m_oper(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
  64 {
  65         struct oper_conf *oper_p;
  66         const char *name;
  67         const char *password;
  68
  69         name = parv[1];
  70         password = parv[2];
  71
  72         if(IsOper(source_p))
  73         {
  74                 sendto_one(source_p, form_str(RPL_YOUREOPER), me.name, source_p->name);
  75                 send_oper_motd(source_p);
  76                 return;
  77         }
  78
  79         /* end the grace period */
  80         if(!IsFloodDone(source_p))
  81                 flood_endgrace(source_p);
  82
  83         oper_p = find_oper_conf(source_p->username, source_p->orighost,
  84                                 source_p->sockhost, name);
  85
  86         if(oper_p == NULL)
  87         {
  88                 sendto_one_numeric(source_p, ERR_NOOPERHOST, form_str(ERR_NOOPERHOST));
  89                 ilog(L_FOPER, "FAILED OPER (%s) by (%s!%s@%s) (%s)",
  90                      name, source_p->name,
  91                      source_p->username, source_p->host, source_p->sockhost);
  92
  93                 if(ConfigFileEntry.failed_oper_notice)
  94                 {
  95                         sendto_realops_snomask(SNO_GENERAL, L_NETWIDE,
  96                                              "Failed OPER attempt - host mismatch by %s (%s@%s)",
  97                                              source_p->name, source_p->username, source_p->host);
  98                 }
  99
 100                 return;
 101         }
 102
 103         if(IsOperConfNeedSSL(oper_p) && !IsSSLClient(source_p))
 104         {
 105                 sendto_one_numeric(source_p, ERR_NOOPERHOST, form_str(ERR_NOOPERHOST));
 106                 ilog(L_FOPER, "FAILED OPER (%s) by (%s!%s@%s) (%s) -- requires SSL/TLS",
 107                      name, source_p->name,
 108                      source_p->username, source_p->host, source_p->sockhost);
 109
 110                 if(ConfigFileEntry.failed_oper_notice)
 111                 {
 112                         sendto_realops_snomask(SNO_GENERAL, L_ALL,
 113                                              "Failed OPER attempt - missing SSL/TLS by %s (%s@%s)",
 114                                              source_p->name, source_p->username, source_p->host);
 115                 }
 116                 return;
 117         }
 118
 119         if (oper_p->certfp != NULL)
 120         {
 121                 if (source_p->certfp == NULL || strcasecmp(source_p->certfp, oper_p->certfp))
 122                 {
 123                         sendto_one_numeric(source_p, ERR_NOOPERHOST, form_str(ERR_NOOPERHOST));
 124                         ilog(L_FOPER, "FAILED OPER (%s) by (%s!%s@%s) (%s) -- client certificate fingerprint mismatch",
 125                              name, source_p->name,
 126                              source_p->username, source_p->host, source_p->sockhost);
 127
 128                         if(ConfigFileEntry.failed_oper_notice)
 129                         {
 130                                 sendto_realops_snomask(SNO_GENERAL, L_ALL,
 131                                                      "Failed OPER attempt - client certificate fingerprint mismatch by %s (%s@%s)",
 132                                                      source_p->name, source_p->username, source_p->host);
 133                         }
 134                         return;
 135                 }
 136         }
 137
 138         if(match_oper_password(password, oper_p))
 139         {
 140                 oper_up(source_p, oper_p);
 141
 142                 ilog(L_OPERED, "OPER %s by %s!%s@%s (%s)",
 143                      name, source_p->name, source_p->username, source_p->host,
 144                      source_p->sockhost);
 145                 return;
 146         }
 147         else
 148         {
 149                 sendto_one(source_p, form_str(ERR_PASSWDMISMATCH),
 150                            me.name, source_p->name);
 151
 152                 ilog(L_FOPER, "FAILED OPER (%s) by (%s!%s@%s) (%s)",
 153                      name, source_p->name, source_p->username, source_p->host,
 154                      source_p->sockhost);
 155
 156                 if(ConfigFileEntry.failed_oper_notice)
 157                 {
 158                         sendto_realops_snomask(SNO_GENERAL, L_NETWIDE,
 159                                              "Failed OPER attempt by %s (%s@%s)",
 160                                              source_p->name, source_p->username, source_p->host);
 161                 }
 162         }
 163 }
 164
 165 /*
 166  * match_oper_password
 167  *
 168  * inputs       - pointer to given password
 169  *              - pointer to Conf
 170  * output       - true if match, false otherwise
 171  * side effects - none
 172  */
 173 static bool
 174 match_oper_password(const char *password, struct oper_conf *oper_p)
 175 {
 176         const char *encr;
 177
 178         /* passwd may be NULL pointer. Head it off at the pass... */
 179         if(EmptyString(oper_p->passwd))
 180                 return false;
 181
 182         if(IsOperConfEncrypted(oper_p))
 183         {
 184                 /* use first two chars of the password they send in as salt */
 185                 /* If the password in the conf is MD5, and ircd is linked
 186                  * to scrypt on FreeBSD, or the standard crypt library on
 187                  * glibc Linux, then this code will work fine on generating
 188                  * the proper encrypted hash for comparison.
 189                  */
 190                 if(!EmptyString(password))
 191                         encr = rb_crypt(password, oper_p->passwd);
 192                 else
 193                         encr = "";
 194         }
 195         else
 196                 encr = password;
 197
 198         if(encr != NULL && strcmp(encr, oper_p->passwd) == 0)
 199                 return true;
 200         else
 201                 return false;
 202 }