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 "match.h"
  28 #include "ircd.h"
  29 #include "numeric.h"
  30 #include "s_conf.h"
  31 #include "s_newconf.h"
  32 #include "logger.h"
  33 #include "s_user.h"
  34 #include "s_serv.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 static void mc_oper(struct MsgBuf *, struct Client *, struct Client *, int, const char **);
  46 static void me_oper(struct MsgBuf *, struct Client *, struct Client *, int, const char **);
  47
  48 static bool match_oper_password(const char *password, struct oper_conf *oper_p);
  49
  50 struct Message oper_msgtab = {
  51         "OPER", 0, 0, 0, 0,
  52         {mg_unreg, {m_oper, 3}, {mc_oper, 2}, mg_ignore, {me_oper, 2}, {m_oper, 3}}
  53 };
  54
  55 mapi_clist_av1 oper_clist[] = { &oper_msgtab, NULL };
  56
  57 DECLARE_MODULE_AV2(oper, NULL, NULL, oper_clist, NULL, NULL, NULL, NULL, oper_desc);
  58
  59 /*
  60  * m_oper
  61  *      parv[1] = oper name
  62  *      parv[2] = oper password
  63  */
  64 static void
  65 m_oper(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
  66 {
  67         struct oper_conf *oper_p;
  68         const char *name;
  69         const char *password;
  70
  71         name = parv[1];
  72         password = parv[2];
  73
  74         if (ConfigFileEntry.oper_secure_only && !IsSecureClient(source_p))
  75         {
  76                 sendto_one_notice(source_p, ":You must be using a secure connection to /OPER on this server");
  77                 if (ConfigFileEntry.failed_oper_notice)
  78                 {
  79                         sendto_realops_snomask(SNO_GENERAL, L_NETWIDE,
  80                                         "Failed OPER attempt - missing secure connection by %s (%s@%s)",
  81                                         source_p->name, source_p->username, source_p->host);
  82                 }
  83                 return;
  84         }
  85
  86         if(IsOper(source_p))
  87         {
  88                 sendto_one(source_p, form_str(RPL_YOUREOPER), me.name, source_p->name);
  89                 send_oper_motd(source_p);
  90                 return;
  91         }
  92
  93         /* end the grace period */
  94         if(!IsFloodDone(source_p))
  95                 flood_endgrace(source_p);
  96
  97         oper_p = find_oper_conf(source_p->username, source_p->orighost,
  98                                 source_p->sockhost, name);
  99
 100         if(oper_p == NULL)
 101         {
 102                 sendto_one_numeric(source_p, ERR_NOOPERHOST, form_str(ERR_NOOPERHOST));
 103                 ilog(L_FOPER, "FAILED OPER (%s) by (%s!%s@%s) (%s)",
 104                      name, source_p->name,
 105                      source_p->username, source_p->host, source_p->sockhost);
 106
 107                 if(ConfigFileEntry.failed_oper_notice)
 108                 {
 109                         sendto_realops_snomask(SNO_GENERAL, L_NETWIDE,
 110                                              "Failed OPER attempt - host mismatch by %s (%s@%s)",
 111                                              source_p->name, source_p->username, source_p->host);
 112                 }
 113
 114                 return;
 115         }
 116
 117         if(IsOperConfNeedSSL(oper_p) && !IsSecureClient(source_p))
 118         {
 119                 sendto_one_numeric(source_p, ERR_NOOPERHOST, form_str(ERR_NOOPERHOST));
 120                 ilog(L_FOPER, "FAILED OPER (%s) by (%s!%s@%s) (%s) -- requires SSL/TLS",
 121                      name, source_p->name,
 122                      source_p->username, source_p->host, source_p->sockhost);
 123
 124                 if(ConfigFileEntry.failed_oper_notice)
 125                 {
 126                         sendto_realops_snomask(SNO_GENERAL, L_ALL,
 127                                              "Failed OPER attempt - missing SSL/TLS by %s (%s@%s)",
 128                                              source_p->name, source_p->username, source_p->host);
 129                 }
 130                 return;
 131         }
 132
 133         if (oper_p->certfp != NULL)
 134         {
 135                 if (source_p->certfp == NULL || rb_strcasecmp(source_p->certfp, oper_p->certfp))
 136                 {
 137                         sendto_one_numeric(source_p, ERR_NOOPERHOST, form_str(ERR_NOOPERHOST));
 138                         ilog(L_FOPER, "FAILED OPER (%s) by (%s!%s@%s) (%s) -- client certificate fingerprint mismatch",
 139                              name, source_p->name,
 140                              source_p->username, source_p->host, source_p->sockhost);
 141
 142                         if(ConfigFileEntry.failed_oper_notice)
 143                         {
 144                                 sendto_realops_snomask(SNO_GENERAL, L_ALL,
 145                                                      "Failed OPER attempt - client certificate fingerprint mismatch by %s (%s@%s)",
 146                                                      source_p->name, source_p->username, source_p->host);
 147                         }
 148                         return;
 149                 }
 150         }
 151
 152         if(match_oper_password(password, oper_p))
 153         {
 154                 oper_up(source_p, oper_p);
 155
 156                 ilog(L_OPERED, "OPER %s by %s!%s@%s (%s)",
 157                      name, source_p->name, source_p->username, source_p->host,
 158                      source_p->sockhost);
 159                 return;
 160         }
 161         else
 162         {
 163                 sendto_one(source_p, form_str(ERR_PASSWDMISMATCH),
 164                            me.name, source_p->name);
 165
 166                 ilog(L_FOPER, "FAILED OPER (%s) by (%s!%s@%s) (%s)",
 167                      name, source_p->name, source_p->username, source_p->host,
 168                      source_p->sockhost);
 169
 170                 if(ConfigFileEntry.failed_oper_notice)
 171                 {
 172                         sendto_realops_snomask(SNO_GENERAL, L_NETWIDE,
 173                                              "Failed OPER attempt by %s (%s@%s)",
 174                                              source_p->name, source_p->username, source_p->host);
 175                 }
 176         }
 177 }
 178
 179 /*
 180  * mc_oper - server-to-server OPER propagation
 181  *     parv[1] = opername
 182  *     parv[2] = privset
 183  */
 184 static void
 185 mc_oper(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
 186 {
 187         struct PrivilegeSet *privset;
 188
 189         if (parc >= 3)
 190         {
 191                 sendto_server(client_p, NULL, CAP_TS6, NOCAPS, ":%s OPER %s %s", use_id(source_p), parv[1], parv[2]);
 192
 193                 privset = privilegeset_get(parv[2]);
 194                 if(privset == NULL)
 195                 {
 196                         /* if we don't have a matching privset, we'll create an empty one and
 197                          * mark it illegal, so it gets picked up on a rehash later */
 198                         sendto_realops_snomask(SNO_GENERAL, L_NETWIDE, "Received OPER for %s with unknown privset %s", source_p->name, parv[2]);
 199                         privset = privilegeset_set_new(parv[2], "", 0);
 200                         privset->status |= CONF_ILLEGAL;
 201                 }
 202
 203                 privset = privilegeset_ref(privset);
 204                 if (source_p->user->privset != NULL)
 205                         privilegeset_unref(source_p->user->privset);
 206
 207                 source_p->user->privset = privset;
 208         }
 209         else
 210         {
 211                 sendto_server(client_p, NULL, CAP_TS6, NOCAPS, ":%s OPER %s", use_id(source_p), parv[1]);
 212         }
 213
 214         rb_free(source_p->user->opername);
 215         source_p->user->opername = rb_strdup(parv[1]);
 216 }
 217
 218 /*
 219  * me_oper - ircd-seven-style OPER propagation
 220  *     parv[1] = opername
 221  */
 222 static void
 223 me_oper(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
 224 {
 225         rb_free(source_p->user->opername);
 226         source_p->user->opername = rb_strdup(parv[1]);
 227 }
 228
 229 /*
 230  * match_oper_password
 231  *
 232  * inputs       - pointer to given password
 233  *              - pointer to Conf
 234  * output       - true if match, false otherwise
 235  * side effects - none
 236  */
 237 static bool
 238 match_oper_password(const char *password, struct oper_conf *oper_p)
 239 {
 240         const char *encr;
 241
 242         /* passwd may be NULL pointer. Head it off at the pass... */
 243         if(EmptyString(oper_p->passwd))
 244                 return false;
 245
 246         if(IsOperConfEncrypted(oper_p))
 247         {
 248                 /* use first two chars of the password they send in as salt */
 249                 /* If the password in the conf is MD5, and ircd is linked
 250                  * to scrypt on FreeBSD, or the standard crypt library on
 251                  * glibc Linux, then this code will work fine on generating
 252                  * the proper encrypted hash for comparison.
 253                  */
 254                 if(!EmptyString(password))
 255                         encr = rb_crypt(password, oper_p->passwd);
 256                 else
 257                         encr = "";
 258         }
 259         else
 260                 encr = password;
 261
 262         if(encr != NULL && strcmp(encr, oper_p->passwd) == 0)
 263                 return true;
 264         else
 265                 return false;
 266 }