miscreply/miscreply.c

   1 /* miscreply.c */
   2
   3 #include "miscreply.h"
   4 #include "../core/error.h"
   5 #include "../core/config.h"
   6 #include "../irc/irc.h"
   7 #include "../lib/irc_string.h"
   8 #include "../lib/version.h"
   9 #include "../nick/nick.h"
  10
  11 #include <stdarg.h>
  12 #include <stdio.h>
  13 #include <string.h>
  14
  15 /* module version */
  16 MODULE_VERSION(MISCREPLY_VERSION);
  17
  18
  19
  20 /*
  21  * This module handles the following remote IRC commands
  22  *
  23  *  ADMIN
  24  *  PRIVS
  25  *  RPING
  26  *  RPONG
  27  *  STATS
  28  *  TRACE
  29  *  TIME
  30  *  VERSION
  31  *  WHOIS
  32  *
  33  */
  34
  35
  36
  37 /* admin info */
  38 sstring *admin1;
  39 sstring *admin2;
  40 sstring *admin3;
  41
  42
  43
  44 /* init */
  45 void _init() {
  46
  47   /* get the admin info from the config
  48    *   mix in some references to Quake and Doom in the defaults
  49    */
  50   admin1 = getcopyconfigitem("miscreply", "admin1", "Located at the Union Aerospace Corp. facility, Stroggos", BUFSIZE);
  51   admin2 = getcopyconfigitem("miscreply", "admin2", "Network IRC Service", BUFSIZE);
  52   admin3 = getcopyconfigitem("miscreply", "admin3", "No administrative info available", BUFSIZE);
  53
  54   /* add server handlers */
  55   registerserverhandler("AD", &handleadminmsg, 1);   /* ADMIN   */
  56   registerserverhandler("PR", &handleprivsmsg, 1);   /* PRIVS   */
  57   registerserverhandler("RI", &handlerpingmsg, 3);   /* RPING   */
  58   registerserverhandler("RO", &handlerpongmsg, 4);   /* RPONG   */
  59   registerserverhandler("R",  &handlestatsmsg, 2);   /* STATS   */
  60   registerserverhandler("TI", &handletimemsg, 1);    /* TIME    */
  61   registerserverhandler("TR", &handletracemsg, 2);   /* TRACE   */
  62   registerserverhandler("V",  &handleversionmsg, 1); /* VERSION */
  63   registerserverhandler("W",  &handlewhoismsg, 2);   /* WHOIS   */
  64
  65 }
  66
  67
  68
  69 /* fini */
  70 void _fini() {
  71
  72   /* remove server handlers */
  73   deregisterserverhandler("AD", &handleadminmsg);   /* ADMIN   */
  74   deregisterserverhandler("PR", &handleprivsmsg);   /* PRIVS   */
  75   deregisterserverhandler("RI", &handlerpingmsg);   /* RPING   */
  76   deregisterserverhandler("RO", &handlerpongmsg);   /* RPONG   */
  77   deregisterserverhandler("R",  &handlestatsmsg);   /* STATS   */
  78   deregisterserverhandler("TI", &handletimemsg);    /* TIME    */
  79   deregisterserverhandler("TR", &handletracemsg);   /* TRACE   */
  80   deregisterserverhandler("V",  &handleversionmsg); /* VERSION */
  81   deregisterserverhandler("W",  &handlewhoismsg);   /* WHOIS   */
  82
  83 }
  84
  85
  86
  87 /* from_server
  88  *   if valid server numeric return 1
  89  *   else return 0 and log error
  90  */
  91 static int from_server(char *sourcenum, char *command) {
  92
  93    /* valid server numeric */
  94   if (strlen(sourcenum) == 2)
  95     return 1;
  96
  97   Error("miscreply", ERR_WARNING, "Received %s request from non-server numeric %s", command, sourcenum);
  98   return 0;
  99 }
 100
 101
 102
 103 /* from_user
 104  *   if valid user numeric return 1
 105  *   else return 0 and log error
 106  */
 107 static int from_user(char *sourcenum, char *command) {
 108
 109   /* valid user numeric */
 110   if (strlen(sourcenum) == 5)
 111     return 1;
 112
 113   Error("miscreply", ERR_WARNING, "Received %s request from non-user numeric %s", command, sourcenum);
 114   return 0;
 115 }
 116
 117
 118
 119 /* needmoreparams
 120  *   reply error to source user
 121  *   log error
 122  */
 123 void miscreply_needmoreparams(char *sourcenum, char *command) {
 124   /*
 125    * 461 ERR_NEEDMOREPARAMS "source 461 target command :Not enough parameters"
 126    *                        "irc.netsplit.net 461 foobar JOIN :Not enough parameters"
 127    */
 128   irc_send("%s 461 %s %s :Not enough parameters", getmynumeric(), sourcenum, command);
 129   Error("miscreply", ERR_WARNING, "Received %s request without enough parameters from %s", command, sourcenum);
 130 }
 131
 132
 133
 134 /* findserver
 135  *   if found return server longnumeric
 136  *   else return -1 and log error
 137  */
 138 long miscreply_findserver(char *sourcenum, char *command) {
 139   long i = numerictolong(sourcenum, 2);
 140
 141   /* check source is a valid server numeric */
 142   if (!from_server(sourcenum, command))
 143     return -1;
 144
 145   if (serverlist[i].linkstate != LS_INVALID)
 146     return i;
 147
 148   Error("miscreply", ERR_WARNING, "Received %s request from unknown server numeric %s", command, sourcenum);
 149   return -1;
 150 }
 151
 152
 153
 154 /* findservermatch
 155  *   if found return server longnumeric
 156  *   else return -1 and reply error to source user
 157  */
 158 long miscreply_findservermatch(char *sourcenum, char *servermask) {
 159   long i;
 160
 161   /* go over all servers */
 162   for (i = 0; i < MAXSERVERS; i++) {
 163     if (serverlist[i].linkstate == LS_INVALID)   /* not linked */
 164       continue;
 165     if (!match2strings(servermask, serverlist[i].name->content))   /* no match */
 166       continue;
 167     return i;
 168   }
 169
 170   /*
 171    * 402 RPL_NOSUCHSERVER "source 402 target server :No such server"
 172    *                      "irc.netsplit.net 402 foobar hub* :No such server"
 173    */
 174   irc_send("%s 402 %s %s :No such server", getmynumeric(), sourcenum, servermask);
 175
 176   return -1;
 177 }
 178
 179
 180
 181 /* finduser
 182  *   if found return nick for source numeric
 183  *   else return NULL and log error
 184  */
 185 nick *miscreply_finduser(char *sourcenum, char *command) {
 186   nick *nick;
 187
 188   /* check source is a valid user numeric */
 189   if (!from_user(sourcenum, command))
 190     return NULL;
 191
 192   if ((nick = getnickbynumericstr(sourcenum)))
 193     return nick;
 194
 195   Error("miscreply", ERR_WARNING, "Received %s request from unknown user numeric %s", command, sourcenum);
 196   return NULL;
 197 }