modules/m_privs.c

   1 /*
   2  * m_privs.c: Shows effective operator privileges
   3  *
   4  * Copyright (C) 2008 Jilles Tjoelker
   5  * Copyright (C) 2008 charybdis development team
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions are
   9  * met:
  10  *
  11  * 1.Redistributions of source code must retain the above copyright notice,
  12  *   this list of conditions and the following disclaimer.
  13  * 2.Redistributions in binary form must reproduce the above copyright
  14  *   notice, this list of conditions and the following disclaimer in the
  15  *   documentation and/or other materials provided with the distribution.
  16  * 3.The name of the author may not be used to endorse or promote products
  17  *   derived from this software without specific prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  20  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  21  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  22  * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
  23  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  24  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  25  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  27  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
  28  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29  * POSSIBILITY OF SUCH DAMAGE.
  30  */
  31
  32 #include "stdinc.h"
  33 #include "client.h"
  34 #include "common.h"
  35 #include "numeric.h"
  36 #include "send.h"
  37 #include "msg.h"
  38 #include "parse.h"
  39 #include "modules.h"
  40 #include "s_conf.h"
  41 #include "s_newconf.h"
  42
  43 static int m_privs(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[]);
  44 static int me_privs(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[]);
  45 static int mo_privs(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[]);
  46 static const char privs_desc[] = "Provides the PRIVS command to inspect an operator's privileges";
  47
  48 struct Message privs_msgtab = {
  49         "PRIVS", 0, 0, 0, 0,
  50         {mg_unreg, {m_privs, 0}, mg_ignore, mg_ignore, {me_privs, 0}, {mo_privs, 0}}
  51 };
  52
  53 mapi_clist_av1 privs_clist[] = {
  54         &privs_msgtab,
  55         NULL
  56 };
  57
  58 /* XXX this is a copy, not so nice */
  59 struct mode_table
  60 {
  61         const char *name;
  62         unsigned int mode;
  63 };
  64
  65 /* there is no such table like this anywhere else */
  66 static struct mode_table auth_client_table[] = {
  67         {"resv_exempt",         FLAGS2_EXEMPTRESV       },
  68         {"kline_exempt",        FLAGS2_EXEMPTKLINE      },
  69         {"flood_exempt",        FLAGS2_EXEMPTFLOOD      },
  70         {"spambot_exempt",      FLAGS2_EXEMPTSPAMBOT    },
  71         {"shide_exempt",        FLAGS2_EXEMPTSHIDE      },
  72         {"jupe_exempt",         FLAGS2_EXEMPTJUPE       },
  73         {"extend_chans",        FLAGS2_EXTENDCHANS      },
  74         {NULL, 0}
  75 };
  76
  77 DECLARE_MODULE_AV2(privs, NULL, NULL, privs_clist, NULL, NULL, NULL, NULL, privs_desc);
  78
  79 static void show_privs(struct Client *source_p, struct Client *target_p)
  80 {
  81         char buf[512];
  82         struct mode_table *p;
  83
  84         buf[0] = '\0';
  85         if (target_p->localClient->privset)
  86                 rb_strlcat(buf, target_p->localClient->privset->privs, sizeof buf);
  87         if (IsOper(target_p))
  88         {
  89                 if (buf[0] != '\0')
  90                         rb_strlcat(buf, " ", sizeof buf);
  91                 rb_strlcat(buf, "operator:", sizeof buf);
  92                 rb_strlcat(buf, target_p->localClient->opername, sizeof buf);
  93
  94                 if (target_p->localClient->privset)
  95                 {
  96                         if (buf[0] != '\0')
  97                                 rb_strlcat(buf, " ", sizeof buf);
  98                         rb_strlcat(buf, "privset:", sizeof buf);
  99                         rb_strlcat(buf, target_p->localClient->privset->name, sizeof buf);
 100                 }
 101         }
 102         p = &auth_client_table[0];
 103         while (p->name != NULL)
 104         {
 105                 if (target_p->flags2 & p->mode)
 106                 {
 107                         if (buf[0] != '\0')
 108                                 rb_strlcat(buf, " ", sizeof buf);
 109                         rb_strlcat(buf, p->name, sizeof buf);
 110                 }
 111                 p++;
 112         }
 113         sendto_one_numeric(source_p, RPL_PRIVS, form_str(RPL_PRIVS),
 114                         target_p->name, buf);
 115 }
 116
 117 static int me_privs(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
 118 {
 119         struct Client *target_p;
 120
 121         if (!IsOper(source_p) || parc < 2 || EmptyString(parv[1]))
 122                 return 0;
 123
 124         /* we cannot show privs for remote clients */
 125         if((target_p = find_person(parv[1])) && MyClient(target_p))
 126                 show_privs(source_p, target_p);
 127
 128         return 0;
 129 }
 130
 131 static int mo_privs(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
 132 {
 133         struct Client *target_p;
 134
 135         if (parc < 2 || EmptyString(parv[1]))
 136                 target_p = source_p;
 137         else
 138         {
 139                 target_p = find_named_person(parv[1]);
 140                 if (target_p == NULL)
 141                 {
 142                         sendto_one_numeric(source_p, ERR_NOSUCHNICK,
 143                                            form_str(ERR_NOSUCHNICK), parv[1]);
 144                         return 0;
 145                 }
 146         }
 147
 148         if (MyClient(target_p))
 149                 show_privs(source_p, target_p);
 150         else
 151                 sendto_one(target_p, ":%s ENCAP %s PRIVS %s",
 152                                 get_id(source_p, target_p),
 153                                 target_p->servptr->name,
 154                                 use_id(target_p));
 155         return 0;
 156 }
 157
 158 static int m_privs(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
 159 {
 160         if (parc >= 2 && !EmptyString(parv[1]) &&
 161                         irccmp(parv[1], source_p->name)) {
 162                 sendto_one_numeric(source_p, ERR_NOPRIVILEGES,
 163                                    form_str(ERR_NOPRIVILEGES));
 164                 return 0;
 165         }
 166
 167         show_privs(source_p, source_p);
 168         return 0;
 169 }