]> jfr.im git - solanum.git/blobdiff - modules/m_whois.c
extensions/umode_hide_idle_time: mask times for hidden sources (#373)
[solanum.git] / modules / m_whois.c
index 331630c7b3093ccec6eaa4892e97c7c73dc3a115..7ed5764343db1b2e7778ec6a5ed8caac6a60d64d 100644 (file)
  *  along with this program; if not, write to the Free Software
  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
  *  USA
- *
- *  $Id: m_whois.c 3536 2007-07-14 21:50:21Z jilles $
  */
 
 #include "stdinc.h"
-#include "common.h"
 #include "client.h"
 #include "hash.h"
 #include "channel.h"
 #include "ircd.h"
 #include "numeric.h"
 #include "s_conf.h"
+#include "s_user.h"
 #include "s_serv.h"
 #include "send.h"
-#include "irc_string.h"
-#include "sprintf_irc.h"
-#include "s_conf.h"
-#include "s_log.h"
+#include "match.h"
+#include "logger.h"
 #include "msg.h"
 #include "parse.h"
 #include "modules.h"
 #include "hook.h"
 #include "s_newconf.h"
+#include "ratelimit.h"
+#include "s_assert.h"
+
+static const char whois_desc[] =
+       "Provides the WHOIS command to display information about a user";
 
 static void do_whois(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]);
 static void single_whois(struct Client *source_p, struct Client *target_p, int operspy);
 
-static int m_whois(struct Client *, struct Client *, int, const char **);
-static int ms_whois(struct Client *, struct Client *, int, const char **);
+static void m_whois(struct MsgBuf *, struct Client *, struct Client *, int, const char **);
+static void ms_whois(struct MsgBuf *, struct Client *, struct Client *, int, const char **);
 
 struct Message whois_msgtab = {
-       "WHOIS", 0, 0, 0, MFLG_SLOW,
+       "WHOIS", 0, 0, 0, 0,
        {mg_unreg, {m_whois, 2}, {ms_whois, 2}, mg_ignore, mg_ignore, {m_whois, 2}}
 };
 
 int doing_whois_hook;
 int doing_whois_global_hook;
+int doing_whois_channel_visibility_hook;
+int doing_whois_show_idle_hook;
 
 mapi_clist_av1 whois_clist[] = { &whois_msgtab, NULL };
 mapi_hlist_av1 whois_hlist[] = {
-       { "doing_whois",        &doing_whois_hook },
-       { "doing_whois_global", &doing_whois_global_hook },
+       { "doing_whois",                        &doing_whois_hook },
+       { "doing_whois_global",                 &doing_whois_global_hook },
+       { "doing_whois_channel_visibility",     &doing_whois_channel_visibility_hook },
+       { "doing_whois_show_idle",              &doing_whois_show_idle_hook },
        { NULL, NULL }
 };
 
-DECLARE_MODULE_AV1(whois, NULL, NULL, whois_clist, whois_hlist, NULL, "$Revision: 3536 $");
+DECLARE_MODULE_AV2(whois, NULL, NULL, whois_clist, whois_hlist, NULL, NULL, NULL, whois_desc);
 
 /*
  * m_whois
- *      parv[0] = sender prefix
  *      parv[1] = nickname masklist
  */
-static int
-m_whois(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
+static void
+m_whois(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
 {
        static time_t last_used = 0;
 
@@ -84,44 +88,41 @@ m_whois(struct Client *client_p, struct Client *source_p, int parc, const char *
                {
                        sendto_one(source_p, form_str(ERR_NONICKNAMEGIVEN),
                                        me.name, source_p->name);
-                       return 0;
+                       return;
                }
 
-               if(!IsOper(source_p))
+               if(!IsOperGeneral(source_p))
                {
                        /* seeing as this is going across servers, we should limit it */
-                       if((last_used + ConfigFileEntry.pace_wait_simple) > CurrentTime)
+                       if((last_used + ConfigFileEntry.pace_wait_simple) > rb_current_time() || !ratelimit_client(source_p, 2))
                        {
                                sendto_one(source_p, form_str(RPL_LOAD2HI),
                                           me.name, source_p->name, "WHOIS");
-                               sendto_one_numeric(source_p, RPL_ENDOFWHOIS, 
+                               sendto_one_numeric(source_p, RPL_ENDOFWHOIS,
                                                   form_str(RPL_ENDOFWHOIS), parv[2]);
-                               return 0;
+                               return;
                        }
                        else
-                               last_used = CurrentTime;
+                               last_used = rb_current_time();
                }
 
                if(hunt_server(client_p, source_p, ":%s WHOIS %s :%s", 1, parc, parv) !=
                   HUNTED_ISME)
-                       return 0;
+                       return;
 
                parv[1] = parv[2];
 
        }
        do_whois(client_p, source_p, parc, parv);
-
-       return 0;
 }
 
 /*
  * ms_whois
- *      parv[0] = sender prefix
  *      parv[1] = server to reply
  *      parv[2] = nickname to whois
  */
-static int
-ms_whois(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
+static void
+ms_whois(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
 {
        struct Client *target_p;
 
@@ -133,27 +134,27 @@ ms_whois(struct Client *client_p, struct Client *source_p, int parc, const char
        {
                sendto_one(source_p, form_str(ERR_NONICKNAMEGIVEN),
                                me.name, source_p->name);
-               return 0;
+               return;
        }
 
        /* check if parv[1] exists */
        if((target_p = find_client(parv[1])) == NULL)
        {
                sendto_one_numeric(source_p, ERR_NOSUCHSERVER,
-                                  form_str(ERR_NOSUCHSERVER), 
+                                  form_str(ERR_NOSUCHSERVER),
                                   IsDigit(parv[1][0]) ? "*" : parv[1]);
-               return 0;
+               return;
        }
 
        /* if parv[1] isnt my client, or me, someone else is supposed
-        * to be handling the request.. so send it to them 
+        * to be handling the request.. so send it to them
         */
        if(!MyClient(target_p) && !IsMe(target_p))
        {
-               sendto_one(target_p, ":%s WHOIS %s :%s", 
-                          get_id(source_p, target_p), 
+               sendto_one(target_p, ":%s WHOIS %s :%s",
+                          get_id(source_p, target_p),
                           get_id(target_p, target_p), parv[2]);
-               return 0;
+               return;
        }
 
        /* ok, the target is either us, or a client on our server, so perform the whois
@@ -162,14 +163,12 @@ ms_whois(struct Client *client_p, struct Client *source_p, int parc, const char
         */
        parv[1] = parv[2];
        do_whois(client_p, source_p, parc, parv);
-
-       return 0;
 }
 
 /* do_whois
  *
- * inputs      - pointer to 
- * output      - 
+ * inputs      - pointer to
+ * output      -
  * side effects -
  */
 static void
@@ -191,7 +190,6 @@ do_whois(struct Client *client_p, struct Client *source_p, int parc, const char
        }
 
        target_p = find_named_person(nick);
-
        if(target_p != NULL)
        {
                if(operspy)
@@ -208,12 +206,11 @@ do_whois(struct Client *client_p, struct Client *source_p, int parc, const char
        }
        else
                sendto_one_numeric(source_p, ERR_NOSUCHNICK,
-                                  form_str(ERR_NOSUCHNICK), 
+                                  form_str(ERR_NOSUCHNICK),
                                   nick);
 
-       sendto_one_numeric(source_p, RPL_ENDOFWHOIS, 
+       sendto_one_numeric(source_p, RPL_ENDOFWHOIS,
                           form_str(RPL_ENDOFWHOIS), parv[1]);
-       return;
 }
 
 /*
@@ -229,23 +226,8 @@ static void
 single_whois(struct Client *source_p, struct Client *target_p, int operspy)
 {
        char buf[BUFSIZE];
-       rb_dlink_node *ptr;
-       struct membership *msptr;
-       struct Channel *chptr;
-       int cur_len = 0;
-       int mlen;
-       char *t;
-       int tlen;
        hook_data_client hdata;
-       char *name;
-       char quest[] = "?";
-       int visible;
-       int extra_space = 0;
-
-       if(target_p->name[0] == '\0')
-               name = quest;
-       else
-               name = target_p->name;
+       struct sockaddr_in ip4;
 
        if(target_p->user == NULL)
        {
@@ -254,58 +236,56 @@ single_whois(struct Client *source_p, struct Client *target_p, int operspy)
        }
 
        sendto_one_numeric(source_p, RPL_WHOISUSER, form_str(RPL_WHOISUSER),
-                          target_p->name, target_p->username, 
+                          target_p->name, target_p->username,
                           target_p->host, target_p->info);
 
-       cur_len = mlen = rb_sprintf(buf, form_str(RPL_WHOISCHANNELS), 
-                                   get_id(&me, source_p), get_id(source_p, source_p), 
+       send_multiline_init(source_p, " ", form_str(RPL_WHOISCHANNELS),
+                                   get_id(&me, source_p), get_id(source_p, source_p),
                                    target_p->name);
 
        /* Make sure it won't overflow when sending it to the client
         * in full names; note that serverhiding may require more space
         * for a different server name (not done here) -- jilles
         */
-       if (!MyConnect(source_p))
-       {
-               extra_space = strlen(source_p->name) - 9;
-               if (extra_space < 0)
-                       extra_space = 0;
-               extra_space += strlen(me.name) - 2; /* make sure >= 0 */
-               cur_len += extra_space;
-       }
+       send_multiline_remote_pad(source_p, &me);
+       send_multiline_remote_pad(source_p, source_p);
 
-       t = buf + mlen;
+       hdata.client = source_p;
+       hdata.target = target_p;
 
        if (!IsService(target_p))
        {
-               RB_DLINK_FOREACH(ptr, target_p->user->channel.head)
+               hook_data_channel_visibility hdata_vis;
+               rb_dlink_node *ps, *pt;
+               struct Channel *chptr;
+               struct membership *ms, *mt;
+
+               hdata_vis.client = source_p;
+               hdata_vis.target = target_p;
+
+               ITER_COMM_CHANNELS(ps, pt, source_p->user->channel.head, target_p->user->channel.head, ms, mt, chptr)
                {
-                       msptr = ptr->data;
-                       chptr = msptr->chptr;
+                       if (mt == NULL)
+                               continue;
+
+                       hdata_vis.chptr = chptr;
+                       hdata_vis.clientms = ms;
+                       hdata_vis.targetms = mt;
+                       hdata_vis.approved = ms != NULL || PubChannel(chptr);
 
-                       visible = ShowChannel(source_p, chptr);
+                       call_hook(doing_whois_channel_visibility_hook, &hdata_vis);
 
-                       if(visible || operspy)
+                       if(hdata_vis.approved || operspy)
                        {
-                               if((cur_len + strlen(chptr->chname) + 3) > (BUFSIZE - 5))
-                               {
-                                       sendto_one(source_p, "%s", buf);
-                                       cur_len = mlen + extra_space;
-                                       t = buf + mlen;
-                               }
-
-                               tlen = rb_sprintf(t, "%s%s%s ",
-                                               visible ? "" : "!",
-                                               find_channel_status(msptr, 1),
+                               send_multiline_item(source_p, "%s%s%s",
+                                               hdata_vis.approved ? "" : "!",
+                                               find_channel_status(mt, 1),
                                                chptr->chname);
-                               t += tlen;
-                               cur_len += tlen;
                        }
                }
        }
 
-       if(cur_len > mlen + extra_space)
-               sendto_one(source_p, "%s", buf);
+       send_multiline_fini(source_p, NULL);
 
        sendto_one_numeric(source_p, RPL_WHOISSERVER, form_str(RPL_WHOISSERVER),
                           target_p->name, target_p->servptr->name,
@@ -315,18 +295,58 @@ single_whois(struct Client *source_p, struct Client *target_p, int operspy)
                sendto_one_numeric(source_p, RPL_AWAY, form_str(RPL_AWAY),
                                   target_p->name, target_p->user->away);
 
-       if(IsOper(target_p))
+       char *s = NULL;
+       if (IsService(target_p))
+       {
+               s = ConfigFileEntry.servicestring;
+       }
+       if (!EmptyString(target_p->user->opername) && IsOper(target_p))
+       {
+               if (target_p == source_p || HasPrivilege(source_p, "oper:privs"))
+               {
+                       const char *privset = "(missing)";
+                       if (target_p->user->privset != NULL)
+                               privset = target_p->user->privset->name;
+                       snprintf(buf, sizeof buf, "is opered as %s, privset %s", target_p->user->opername, privset);
+                       s = buf;
+               }
+               else if (IsOper(source_p) && SeesOper(target_p, source_p))
+               {
+                       snprintf(buf, sizeof buf, "is opered as %s", target_p->user->opername);
+                       s = buf;
+               }
+               else if (!ConfigFileEntry.hide_opers_in_whois && SeesOper(target_p, source_p))
+               {
+                       s = IsAdmin(target_p) ? GlobalSetOptions.adminstring :
+                           GlobalSetOptions.operstring;
+               }
+       }
+       if (s != NULL)
        {
                sendto_one_numeric(source_p, RPL_WHOISOPERATOR, form_str(RPL_WHOISOPERATOR),
-                                  target_p->name,
-                                  IsService(target_p) ? ConfigFileEntry.servicestring :
-                                  (IsAdmin(target_p) ? GlobalSetOptions.adminstring :
-                                   GlobalSetOptions.operstring));
+                               target_p->name, s);
+       }
+
+       if(IsSecureClient(target_p))
+       {
+               char cbuf[256] = "is using a secure connection";
+
+               if (MyClient(target_p) && target_p->localClient->cipher_string != NULL &&
+                               (!ConfigFileEntry.tls_ciphers_oper_only || source_p == target_p || IsOper(source_p)))
+                       rb_snprintf_append(cbuf, sizeof(cbuf), " [%s]", target_p->localClient->cipher_string);
+
+               sendto_one_numeric(source_p, RPL_WHOISSECURE, form_str(RPL_WHOISSECURE),
+                                  target_p->name, cbuf);
+               if((source_p == target_p || IsOperGeneral(source_p)) &&
+                               target_p->certfp != NULL)
+                       sendto_one_numeric(source_p, RPL_WHOISCERTFP,
+                                       form_str(RPL_WHOISCERTFP),
+                                       target_p->name, target_p->certfp);
        }
 
        if(MyClient(target_p))
        {
-               if (IsDynSpoof(target_p) && (IsOper(source_p) || source_p == target_p))
+               if (IsDynSpoof(target_p) && (HasPrivilege(source_p, "auspex:hostname") || source_p == target_p))
                {
                        /* trick here: show a nonoper their own IP if
                         * dynamic spoofed but not if auth{} spoofed
@@ -343,14 +363,42 @@ single_whois(struct Client *source_p, struct Client *target_p, int operspy)
                                           form_str(RPL_WHOISACTUALLY),
                                           target_p->name, target_p->sockhost);
 
+               if (GET_SS_FAMILY(&target_p->localClient->ip) == AF_INET6 &&
+                               (show_ip(source_p, target_p) ||
+                                (source_p == target_p && !IsIPSpoof(target_p))) &&
+                               rb_ipv4_from_ipv6((struct sockaddr_in6 *)&target_p->localClient->ip, &ip4))
+               {
+                       rb_inet_ntop_sock((struct sockaddr *)&ip4,
+                                       buf, sizeof buf);
+                       sendto_one_numeric(source_p, RPL_WHOISTEXT,
+                                       "%s :Underlying IPv4 is %s",
+                                       target_p->name, buf);
+               }
+
+               /* fire the doing_whois_show_idle hook to allow modules to tell us whether to show the idle time */
+               hook_data_client_approval hdata_showidle;
+
+               hdata_showidle.client = source_p;
+               hdata_showidle.target = target_p;
+               hdata_showidle.approved = WHOIS_IDLE_SHOW;
+
+               call_hook(doing_whois_show_idle_hook, &hdata_showidle);
+
                sendto_one_numeric(source_p, RPL_WHOISIDLE, form_str(RPL_WHOISIDLE),
-                                  target_p->name, 
-                                  CurrentTime - target_p->localClient->last, 
-                                  target_p->localClient->firsttime);
+                          target_p->name,
+                          hdata_showidle.approved ? (long)(rb_current_time() - target_p->localClient->last) : 0,
+                          (unsigned long)target_p->localClient->firsttime);
+
+               if (hdata_showidle.approved == WHOIS_IDLE_HIDE && (source_p->umodes & user_modes['I']))
+                       /* if the source has hidden their idle time, notify the source that they can't view others' idle times either */
+                       sendto_one_numeric(source_p, RPL_WHOISTEXT, form_str(RPL_WHOISTEXT), target_p->name, "has a hidden idle time because your own idle time is hidden");
+               else if (hdata_showidle.approved != WHOIS_IDLE_SHOW)
+                       /* if the target has hidden their idle time, notify the source */
+                       sendto_one_numeric(source_p, RPL_WHOISTEXT, form_str(RPL_WHOISTEXT), target_p->name, "is hiding their idle time");
        }
        else
        {
-               if (IsDynSpoof(target_p) && (IsOper(source_p) || source_p == target_p))
+               if (IsDynSpoof(target_p) && (HasPrivilege(source_p, "auspex:hostname") || source_p == target_p))
                {
                        ClearDynSpoof(target_p);
                        sendto_one_numeric(source_p, RPL_WHOISHOST,
@@ -365,14 +413,10 @@ single_whois(struct Client *source_p, struct Client *target_p, int operspy)
                        sendto_one_numeric(source_p, RPL_WHOISACTUALLY,
                                           form_str(RPL_WHOISACTUALLY),
                                           target_p->name, target_p->sockhost);
-                       
+
                }
-       
        }
 
-       hdata.client = source_p;
-       hdata.target = target_p;
-
        /* doing_whois_hook must only be called for local clients,
         * doing_whois_global_hook must only be called for local targets
         */
@@ -383,7 +427,4 @@ single_whois(struct Client *source_p, struct Client *target_p, int operspy)
                call_hook(doing_whois_hook, &hdata);
        else
                call_hook(doing_whois_global_hook, &hdata);
-
-       return;
 }
-