newsearch/ns-kill.c

   1 /*
   2  * KILL functionality
   3  */
   4
   5 #include "newsearch.h"
   6
   7 #include <stdio.h>
   8 #include <stdlib.h>
   9
  10 #include "../control/control.h" /* controlreply() */
  11 #include "../localuser/localuser.h" /* killuser() */
  12 #include "../lib/irc_string.h" /* IPtostr() */
  13
  14 /* used for *_free functions that need to warn users of certain things
  15    i.e. hitting too many users in a (kill) or (gline) - declared in newsearch.c */
  16 extern nick *senderNSExtern;
  17
  18 void *kill_exe(struct searchNode *thenode, void *theinput);
  19 void kill_free(struct searchNode *thenode);
  20
  21 struct kill_localdata {
  22   unsigned int marker;
  23   int count;
  24   int type;
  25   char reason[NSMAX_REASON_LEN];
  26 };
  27
  28 struct searchNode *kill_parse(int type, int argc, char **argv) {
  29   struct kill_localdata *localdata;
  30   struct searchNode *thenode;
  31   int len;
  32
  33   if (!(localdata = (struct kill_localdata *) malloc(sizeof(struct kill_localdata)))) {
  34     parseError = "malloc: could not allocate memory for this search.";
  35     return NULL;
  36   }
  37   localdata->count = 0;
  38   localdata->type = type;
  39   if (type == SEARCHTYPE_CHANNEL)
  40     localdata->marker = nextchanmarker();
  41   else
  42     localdata->marker = nextnickmarker();
  43
  44   if (argc==1) {
  45     len = snprintf(localdata->reason, NSMAX_REASON_LEN, ":%s", argv[0]);
  46     /* strip leading and trailing '"'s */
  47     localdata->reason[1] = ' ';
  48     localdata->reason[len-1] = '\0';
  49   }
  50   else
  51     snprintf(localdata->reason, NSMAX_REASON_LEN, ".");
  52
  53   if (!(thenode=(struct searchNode *)malloc(sizeof (struct searchNode)))) {
  54     /* couldn't malloc() memory for thenode, so free localdata to avoid leakage */
  55     parseError = "malloc: could not allocate memory for this search.";
  56     free(localdata);
  57     return NULL;
  58   }
  59
  60   thenode->returntype = RETURNTYPE_BOOL;
  61   thenode->localdata = localdata;
  62   thenode->exe = kill_exe;
  63   thenode->free = kill_free;
  64
  65   return thenode;
  66 }
  67
  68 void *kill_exe(struct searchNode *thenode, void *theinput) {
  69   struct kill_localdata *localdata;
  70   nick *np;
  71   chanindex *cip;
  72
  73   localdata = thenode->localdata;
  74
  75   if (localdata->type == SEARCHTYPE_CHANNEL) {
  76     cip = (chanindex *)theinput;
  77     cip->marker = localdata->marker;
  78     localdata->count += cip->channel->users->totalusers;
  79   }
  80   else {
  81     np = (nick *)theinput;
  82     np->marker = localdata->marker;
  83     localdata->count++;
  84   }
  85
  86   return (void *)1;
  87 }
  88
  89 void kill_free(struct searchNode *thenode) {
  90   struct kill_localdata *localdata;
  91   nick *np, *nnp;
  92   chanindex *cip, *ncip;
  93   int i, j, safe=0;
  94
  95   localdata = thenode->localdata;
  96
  97   if (localdata->count > NSMAX_KILL_LIMIT) {
  98     /* need to warn the user that they have just tried to twat half the network ... */
  99     controlreply(senderNSExtern, "Warning: your pattern matches too many users (%d) - nothing done.", localdata->count);
 100     free(localdata);
 101     free(thenode);
 102     return;
 103   }
 104
 105   if (localdata->type == SEARCHTYPE_CHANNEL) {
 106     for (i=0;i<CHANNELHASHSIZE;i++) {
 107       for (cip=chantable[i];cip;cip=ncip) {
 108         ncip = cip->next;
 109         if (cip != NULL && cip->channel != NULL && cip->marker == localdata->marker) {
 110           for (j=0;j<cip->channel->users->hashsize;j++) {
 111             if (cip->channel->users->content[j]==nouser)
 112               continue;
 113
 114             if ((np=getnickbynumeric(cip->channel->users->content[j]))) {
 115               if (!IsOper(np) && !IsService(np) && !IsXOper(np)) {
 116                 killuser(NULL, np, "You (%s!%s@%s) have been disconnected for violating our terms of service%s", np->nick,
 117                   np->ident, IPtostr(np->p_ipaddr), localdata->reason);
 118               }
 119               else
 120                 safe++;
 121             }
 122           }
 123         }
 124       }
 125     }
 126   }
 127   else {
 128     for (i=0;i<NICKHASHSIZE;i++) {
 129       for (np=nicktable[i];np;np=nnp) {
 130         nnp = np->next;
 131         if (np->marker == localdata->marker) {
 132           if (!IsOper(np) && !IsService(np) && !IsXOper(np)) {
 133             killuser(NULL, np, "You (%s!%s@%s) have been disconnected for violating our terms of service%s", np->nick,
 134               np->ident, IPtostr(np->p_ipaddr), localdata->reason);
 135           }
 136           else
 137               safe++;
 138         }
 139       }
 140     }
 141   }
 142   if (safe)
 143     controlreply(senderNSExtern, "Warning: your pattern matched privileged users (%d in total) - these have not been touched.", safe);
 144   /* notify opers of the action */
 145   controlwall(NO_OPER, NL_KICKKILLS, "%s/%s killed %d %s via %s [%d untouched].", senderNSExtern->nick, senderNSExtern->authname, (localdata->count - safe),
 146     (localdata->count - safe) != 1 ? "users" : "user", (localdata->type == SEARCHTYPE_CHANNEL) ? "chansearch" : "nicksearch", safe);
 147   free(localdata);
 148   free(thenode);
 149 }