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 const char privs_desc[] = "Provides the PRIVS command to inspect an operator's privileges";
  44
  45 static void m_privs(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[]);
  46 static void me_privs(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[]);
  47 static void mo_privs(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[]);
  48
  49 struct Message privs_msgtab = {
  50         "PRIVS", 0, 0, 0, 0,
  51         {mg_unreg, {m_privs, 0}, mg_ignore, mg_ignore, {me_privs, 0}, {mo_privs, 0}}
  52 };
  53
  54 mapi_clist_av1 privs_clist[] = {
  55         &privs_msgtab,
  56         NULL
  57 };
  58
  59 /* XXX this is a copy, not so nice */
  60 struct mode_table
  61 {
  62         const char *name;
  63         unsigned int mode;
  64 };
  65
  66 /* there is no such table like this anywhere else */
  67 static struct mode_table auth_client_table[] = {
  68         {"resv_exempt",         FLAGS2_EXEMPTRESV       },
  69         {"kline_exempt",        FLAGS2_EXEMPTKLINE      },
  70         {"flood_exempt",        FLAGS2_EXEMPTFLOOD      },
  71         {"spambot_exempt",      FLAGS2_EXEMPTSPAMBOT    },
  72         {"shide_exempt",        FLAGS2_EXEMPTSHIDE      },
  73         {"jupe_exempt",         FLAGS2_EXEMPTJUPE       },
  74         {"extend_chans",        FLAGS2_EXTENDCHANS      },
  75         {NULL, 0}
  76 };
  77
  78 DECLARE_MODULE_AV2(privs, NULL, NULL, privs_clist, NULL, NULL, NULL, NULL, privs_desc);
  79
  80 static void show_privs(struct Client *source_p, struct Client *target_p)
  81 {
  82         char buf[512];
  83         struct mode_table *p;
  84
  85         buf[0] = '\0';
  86         if (target_p->localClient->privset)
  87                 rb_strlcat(buf, target_p->localClient->privset->privs, sizeof buf);
  88         if (IsOper(target_p))
  89         {
  90                 if (buf[0] != '\0')
  91                         rb_strlcat(buf, " ", sizeof buf);
  92                 rb_strlcat(buf, "operator:", sizeof buf);
  93                 rb_strlcat(buf, target_p->localClient->opername, sizeof buf);
  94
  95                 if (target_p->localClient->privset)
  96                 {
  97                         if (buf[0] != '\0')
  98                                 rb_strlcat(buf, " ", sizeof buf);
  99                         rb_strlcat(buf, "privset:", sizeof buf);
 100                         rb_strlcat(buf, target_p->localClient->privset->name, sizeof buf);
 101                 }
 102         }
 103         p = &auth_client_table[0];
 104         while (p->name != NULL)
 105         {
 106                 if (target_p->flags2 & p->mode)
 107                 {
 108                         if (buf[0] != '\0')
 109                                 rb_strlcat(buf, " ", sizeof buf);
 110                         rb_strlcat(buf, p->name, sizeof buf);
 111                 }
 112                 p++;
 113         }
 114         sendto_one_numeric(source_p, RPL_PRIVS, form_str(RPL_PRIVS),
 115                         target_p->name, buf);
 116 }
 117
 118 static void
 119 me_privs(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
 120 {
 121         struct Client *target_p;
 122
 123         if (!IsOper(source_p) || parc < 2 || EmptyString(parv[1]))
 124                 return;
 125
 126         /* we cannot show privs for remote clients */
 127         if((target_p = find_person(parv[1])) && MyClient(target_p))
 128                 show_privs(source_p, target_p);
 129 }
 130
 131 static void
 132 mo_privs(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
 133 {
 134         struct Client *target_p;
 135
 136         if (parc < 2 || EmptyString(parv[1]))
 137                 target_p = source_p;
 138         else
 139         {
 140                 target_p = find_named_person(parv[1]);
 141                 if (target_p == NULL)
 142                 {
 143                         sendto_one_numeric(source_p, ERR_NOSUCHNICK,
 144                                            form_str(ERR_NOSUCHNICK), parv[1]);
 145                         return;
 146                 }
 147         }
 148
 149         if (MyClient(target_p))
 150                 show_privs(source_p, target_p);
 151         else
 152                 sendto_one(target_p, ":%s ENCAP %s PRIVS %s",
 153                                 get_id(source_p, target_p),
 154                                 target_p->servptr->name,
 155                                 use_id(target_p));
 156 }
 157
 158 static void
 159 m_privs(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
 160 {
 161         if (parc >= 2 && !EmptyString(parv[1]) &&
 162                         irccmp(parv[1], source_p->name)) {
 163                 sendto_one_numeric(source_p, ERR_NOPRIVILEGES,
 164                                    form_str(ERR_NOPRIVILEGES));
 165                 return;
 166         }
 167
 168         show_privs(source_p, source_p);
 169 }