trusts/trusts_commands.c

   1 #include <stdio.h>
   2 #include <string.h>
   3 #include "../control/control.h"
   4 #include "../lib/irc_string.h"
   5 #include "../lib/strlfunc.h"
   6 #include "../core/nsmalloc.h"
   7 #include "trusts.h"
   8
   9 static void registercommands(int, void *);
  10 static void deregistercommands(int, void *);
  11
  12 void calculatespaces(int spaces, int width, char *str, char **_prebuf, char **_postbuf) {
  13   static char prebuf[512], postbuf[512];
  14   int spacelen;
  15
  16   if(spaces + 5 >= sizeof(prebuf)) {
  17     prebuf[0] = prebuf[1] = '\0';
  18   } else {
  19     memset(prebuf, ' ', spaces);
  20     prebuf[spaces] = '\0';
  21   }
  22
  23   spacelen = width - (strlen(str) + spaces);
  24   if(spacelen <= 0 || spacelen + 5 >= sizeof(postbuf)) {
  25     postbuf[0] = postbuf[1] = '\0';
  26   } else {
  27     memset(postbuf, ' ', spacelen);
  28     postbuf[spacelen] = '\0';
  29   }
  30
  31   *_prebuf = prebuf;
  32   *_postbuf = postbuf;
  33 }
  34
  35 static void traverseandmark(unsigned int marker, trusthost *th) {
  36   th->marker = marker;
  37
  38   for(th=th->children;th;th=th->nextbychild) {
  39     th->marker = marker;
  40     traverseandmark(marker, th);
  41   }
  42 }
  43
  44 static void insertth(array *parents, trusthost *th) {
  45   int i;
  46   trusthost **p2 = (trusthost **)(parents->content);
  47
  48   /* this eliminates common subtrees */
  49   for(i=0;i<parents->cursi;i++)
  50     if(p2[i] == th)
  51       break;
  52
  53   if(i == parents->cursi) {
  54     int pos = array_getfreeslot(parents);
  55     ((trusthost **)(parents->content))[pos] = th;
  56   }
  57 }
  58
  59 static void marktree(array *parents, unsigned int marker, trusthost *th) {
  60   trusthost *pth;
  61   int parentcount = 0;
  62
  63   for(pth=th->parent;pth;pth=pth->next) {
  64     insertth(parents, pth);
  65
  66     pth->marker = marker;
  67   }
  68
  69   if(parentcount == 0)
  70     insertth(parents, th);
  71
  72   /* sadly we need to recurse down */
  73   traverseandmark(marker, th);
  74 }
  75
  76 static void outputtree(nick *np, unsigned int marker, trustgroup *originalgroup, trusthost *th, int depth) {
  77   char *cidrstr, *prespacebuf, *postspacebuf, parentbuf[512];
  78   int mask;
  79
  80   if(th->marker != marker)
  81     return;
  82
  83   cidrstr = trusts_cidr2str(th->ip, th->mask);
  84   calculatespaces(depth + 1, 20 + 1, cidrstr, &prespacebuf, &postspacebuf);
  85
  86   if(th->group == originalgroup) {
  87     prespacebuf[0] = '>';
  88
  89     parentbuf[0] = '\0';
  90   } else {
  91     /* show the ids of other groups */
  92
  93     snprintf(parentbuf, sizeof(parentbuf), "%-10d %s", th->group->id, th->group->name->content);
  94   }
  95
  96   /*if (!ipv6) */
  97     mask = th->nodebits - 96;
  98
  99   controlreply(np, "%s%s%s %-10d %-10d %-21s %-15d /%-14d%s", prespacebuf, cidrstr, postspacebuf, th->count, th->maxusage, (th->count>0)?"(now)":((th->lastseen>0)?trusts_timetostr(th->lastseen):"(never)"), th->maxpernode, mask, parentbuf);
 100
 101   for(th=th->children;th;th=th->nextbychild)
 102     outputtree(np, marker, originalgroup, th, depth + 1);
 103 }
 104
 105 static void displaygroup(nick *sender, trustgroup *tg) {
 106   trusthost *th, **p2;
 107   unsigned int marker;
 108   array parents;
 109   int i;
 110   time_t t = time(NULL);
 111
 112   /* abusing the ternary operator a bit :( */
 113   controlreply(sender, "Name:            : %s", tg->name->content);
 114   controlreply(sender, "Trusted for      : %d", tg->trustedfor);
 115   controlreply(sender, "Currently using  : %d", tg->count);
 116   controlreply(sender, "Clients per user : %d (%senforcing ident)", tg->maxperident, tg->mode?"":"not ");
 117   controlreply(sender, "Contact:         : %s", tg->contact->content);
 118   controlreply(sender, "Expires in       : %s", (tg->expires)?((tg->expires>t)?longtoduration(tg->expires - t, 2):"(the past -- BUG)"):"never");
 119   controlreply(sender, "Last changed by  : %s", tg->createdby->content);
 120   controlreply(sender, "Comment:         : %s", tg->comment->content);
 121   controlreply(sender, "ID:              : %u", tg->id);
 122   controlreply(sender, "Last used        : %s", (tg->count>0)?"(now)":((tg->lastseen>0)?trusts_timetostr(tg->lastseen):"(never)"));
 123   controlreply(sender, "Max usage        : %d", tg->maxusage);
 124   controlreply(sender, "Last max reset   : %s", tg->lastmaxusereset?trusts_timetostr(tg->lastmaxusereset):"(never)");
 125
 126   controlreply(sender, "Host                 Current    Max        Last seen             Max per Node    Node Mask      Group ID   Group name");
 127
 128   marker = nextthmarker();
 129   array_init(&parents, sizeof(trusthost *));
 130
 131   for(th=tg->hosts;th;th=th->next)
 132     marktree(&parents, marker, th);
 133
 134   p2 = (trusthost **)(parents.content);
 135   for(i=0;i<parents.cursi;i++)
 136     outputtree(sender, marker, tg, p2[i], 0);
 137
 138   array_free(&parents);
 139
 140   controlreply(sender, "End of list.");
 141 }
 142
 143 static int trusts_cmdtrustlist(void *source, int cargc, char **cargv) {
 144   nick *sender = source;
 145   trustgroup *tg = NULL;
 146   int found = 0, remaining = 50;
 147   char *name;
 148   trusthost *th;
 149   uint32_t ip;
 150   short mask;
 151
 152   if(cargc < 1)
 153     return CMD_USAGE;
 154
 155   name = cargv[0];
 156
 157   tg = tg_strtotg(name);
 158
 159   if(tg) {
 160     displaygroup(sender, tg);
 161     return CMD_OK;
 162   }
 163
 164   if(trusts_parsecidr(name, &ip, &mask)) {
 165     th = th_getbyhost(ip);
 166
 167     if(!th) {
 168       controlreply(sender, "Specified IP address is not trusted.");
 169       return CMD_OK;
 170     }
 171
 172     displaygroup(sender, th->group);
 173     return CMD_OK;
 174   }
 175
 176   for(tg=tglist;tg;tg=tg->next) {
 177     if(match(name, tg->name->content))
 178       continue;
 179
 180     displaygroup(sender, tg);
 181     if(--remaining == 0) {
 182       controlreply(sender, "Maximum number of matches reached.");
 183       return CMD_OK;
 184     }
 185     found = 1;
 186   }
 187
 188   if(!found)
 189     controlreply(sender, "No matches found.");
 190
 191   return CMD_OK;
 192 }
 193
 194 static int comparetgs(const void *_a, const void *_b) {
 195   const trustgroup *a = _a;
 196   const trustgroup *b = _b;
 197
 198   if(a->id > b->id)
 199     return 1;
 200   if(a->id < b-> id)
 201     return -1;
 202   return 0;
 203 }
 204
 205 static int trusts_cmdtrustdump(void *source, int argc, char **argv) {
 206   trusthost *th;
 207   trustgroup *tg, **atg;
 208   unsigned int wanted, max, maxid, totalcount, i, groupcount, linecount;
 209   nick *np = source;
 210
 211   if((argc < 2) || (argv[0][0] != '#'))
 212     return CMD_USAGE;
 213
 214   wanted = atoi(&argv[0][1]);
 215   max = atoi(argv[1]);
 216
 217   for(maxid=totalcount=0,tg=tglist;tg;tg=tg->next) {
 218     if(totalcount == 0 || tg->id > maxid)
 219       maxid = tg->id;
 220
 221     totalcount++;
 222   }
 223
 224   if(maxid > totalcount) {
 225     controlreply(np, "Start ID cannot exceed current maximum group ID (#%u)", maxid);
 226     return CMD_OK;
 227   }
 228
 229   atg = nsmalloc(POOL_TRUSTS, sizeof(trusthost *) * totalcount);
 230   if(!atg) {
 231     controlreply(np, "Memory error.");
 232     return CMD_ERROR;
 233   }
 234
 235   for(i=0,tg=tglist;i<totalcount&&tg;tg=tg->next,i++)
 236     atg[i] = tg;
 237
 238   qsort(atg, totalcount, sizeof(trustgroup *), comparetgs);
 239
 240   for(i=0;i<totalcount;i++)
 241     if(atg[i]->id >= wanted)
 242       break;
 243
 244   for(groupcount=linecount=0;i<totalcount;i++) {
 245     linecount++;
 246     groupcount++;
 247
 248     controlreply(np, "G,%s", dumptg(atg[i], 1));
 249
 250     for(th=atg[i]->hosts;th;th=th->next) {
 251       linecount++;
 252       controlreply(np, "H,%s", dumpth(th, 1));
 253     }
 254
 255     if(--max == 0)
 256       break;
 257   }
 258   nsfree(POOL_TRUSTS, atg);
 259
 260   controlreply(np, "End of list, %u groups and %u lines returned.", groupcount, linecount);
 261   return CMD_OK;
 262 }
 263
 264 static int trusts_cmdtrustgline(void *source, int cargc, char **cargv) {
 265   trustgroup *tg;
 266   nick *sender = source;
 267   char *user, *reason;
 268   int duration, count;
 269
 270   if(cargc < 4)
 271     return CMD_USAGE;
 272
 273   tg = tg_strtotg(cargv[0]);
 274   if(!tg) {
 275     controlreply(sender, "Couldn't look up trustgroup.");
 276     return CMD_ERROR;
 277   }
 278
 279   user = cargv[1];
 280
 281   duration = durationtolong(cargv[2]);
 282   if((duration <= 0) || (duration > MAXDURATION)) {
 283     controlreply(sender, "Invalid duration supplied.");
 284     return CMD_ERROR;
 285   }
 286
 287   reason = cargv[3];
 288
 289   count = trustgline(tg, user, duration, reason);
 290
 291   controlwall(NO_OPER, NL_GLINES|NL_TRUSTS, "%s TRUSTGLINE'd user '%s' on group '%s', %d gline(s) set.", controlid(sender), user, tg->name->content, count);
 292   controlreply(sender, "Done. %d gline(s) set.", count);
 293
 294   return CMD_OK;
 295 }
 296
 297 static int trusts_cmdtrustungline(void *source, int cargc, char **cargv) {
 298   trustgroup *tg;
 299   nick *sender = source;
 300   char *user;
 301   int count;
 302
 303   if(cargc < 2)
 304     return CMD_USAGE;
 305
 306   tg = tg_strtotg(cargv[0]);
 307   if(!tg) {
 308     controlreply(sender, "Couldn't look up trustgroup.");
 309     return CMD_ERROR;
 310   }
 311
 312   user = cargv[1];
 313
 314   count = trustungline(tg, user, 0, "Deactivated.");
 315
 316   controlwall(NO_OPER, NL_GLINES|NL_TRUSTS, "%s TRUSTUNGLINE'd user '%s' on group '%s', %d gline(s) removed.", controlid(sender), user, tg->name->content, count);
 317   controlreply(sender, "Done. %d gline(s) removed.", count);
 318
 319   return CMD_OK;
 320 }
 321
 322 static int commandsregistered;
 323
 324 static void registercommands(int hooknum, void *arg) {
 325   if(commandsregistered)
 326     return;
 327   commandsregistered = 1;
 328
 329   registercontrolhelpcmd("trustlist", NO_OPER, 1, trusts_cmdtrustlist, "Usage: trustlist <#id|name|IP>\nShows trust data for the specified trust group.");
 330   registercontrolhelpcmd("trustdump", NO_OPER, 2, trusts_cmdtrustdump, "Usage: trustdump <#id> <number>");
 331   registercontrolhelpcmd("trustgline", NO_OPER, 4, trusts_cmdtrustgline, "Usage: trustgline <#id|name> <user> <duration> <reason>\nGlines a user on all hosts of a trust group.");
 332   registercontrolhelpcmd("trustungline", NO_OPER, 4, trusts_cmdtrustungline, "Usage: trustungline <#id|name> <user>\nUnglines a user on all hosts of a trust group.");
 333 }
 334
 335 static void deregistercommands(int hooknum, void *arg) {
 336   if(!commandsregistered)
 337     return;
 338   commandsregistered = 0;
 339
 340   deregistercontrolcmd("trustlist", trusts_cmdtrustlist);
 341   deregistercontrolcmd("trustdump", trusts_cmdtrustdump);
 342   deregistercontrolcmd("trustgline", trusts_cmdtrustgline);
 343   deregistercontrolcmd("trustungline", trusts_cmdtrustungline);
 344 }
 345
 346 void _init(void) {
 347   registerhook(HOOK_TRUSTS_DB_LOADED, registercommands);
 348   registerhook(HOOK_TRUSTS_DB_CLOSED, deregistercommands);
 349
 350   if(trustsdbloaded)
 351     registercommands(0, NULL);
 352 }
 353
 354 void _fini(void) {
 355   deregisterhook(HOOK_TRUSTS_DB_LOADED, registercommands);
 356   deregisterhook(HOOK_TRUSTS_DB_CLOSED, deregistercommands);
 357
 358   deregistercommands(0, NULL);
 359 }