trusts/trusts_commands.c

   1 #include <stdio.h>
   2 #include <string.h>
   3 #include "../lib/version.h"
   4 #include "../control/control.h"
   5 #include "../lib/irc_string.h"
   6 #include "../lib/strlfunc.h"
   7 #include "../core/nsmalloc.h"
   8 #include "../irc/irc.h"
   9 #include "../newsearch/newsearch.h"
  10 #include "../glines/glines.h"
  11 #include "trusts.h"
  12 #include "newsearch/trusts_newsearch.h"
  13
  14 MODULE_VERSION("");
  15
  16 static void registercommands(int, void *);
  17 static void deregistercommands(int, void *);
  18
  19 extern void printnick_channels(searchCtx *, nick *, nick *);
  20
  21 void calculatespaces(int spaces, int width, const char *str, char **_prebuf, char **_postbuf) {
  22   static char prebuf[512], postbuf[512];
  23   int spacelen;
  24
  25   if(spaces + 5 >= sizeof(prebuf)) {
  26     prebuf[0] = prebuf[1] = '\0';
  27   } else {
  28     memset(prebuf, ' ', spaces);
  29     prebuf[spaces] = '\0';
  30   }
  31
  32   spacelen = width - (strlen(str) + spaces);
  33   if(spacelen <= 0 || spacelen + 5 >= sizeof(postbuf)) {
  34     postbuf[0] = postbuf[1] = '\0';
  35   } else {
  36     memset(postbuf, ' ', spacelen);
  37     postbuf[spacelen] = '\0';
  38   }
  39
  40   *_prebuf = prebuf;
  41   *_postbuf = postbuf;
  42 }
  43
  44 static void traverseandmark(unsigned int marker, trusthost *th, int markchildren) {
  45   th->marker = marker;
  46
  47   if(markchildren) {
  48     for(th=th->children;th;th=th->nextbychild) {
  49       th->marker = marker;
  50       traverseandmark(marker, th, markchildren);
  51     }
  52   }
  53 }
  54
  55 static void insertth(array *parents, trusthost *th) {
  56   int i;
  57   trusthost **p2 = (trusthost **)(parents->content);
  58
  59   /* this eliminates common subtrees */
  60   for(i=0;i<parents->cursi;i++)
  61     if(p2[i] == th)
  62       break;
  63
  64   if(i == parents->cursi) {
  65     int pos = array_getfreeslot(parents);
  66     ((trusthost **)(parents->content))[pos] = th;
  67   }
  68 }
  69
  70 static void marktree(array *parents, unsigned int marker, trusthost *th, int showchildren) {
  71   trusthost *pth;
  72   int parentcount = 0;
  73
  74   for(pth=th->parent;pth;pth=pth->parent) {
  75     insertth(parents, pth);
  76
  77     pth->marker = marker;
  78   }
  79
  80   if(parentcount == 0)
  81     insertth(parents, th);
  82
  83   /* sadly we need to recurse down */
  84   traverseandmark(marker, th, showchildren);
  85 }
  86
  87 static void outputtree(nick *np, unsigned int marker, trustgroup *originalgroup, trusthost *th, int depth, int showchildren) {
  88   const char *cidrstr;
  89   char *prespacebuf, *postspacebuf, parentbuf[512];
  90
  91   if(th->marker != marker)
  92     return;
  93
  94   cidrstr = CIDRtostr(th->ip, th->bits);
  95   calculatespaces(depth + 2, 30 + 1, cidrstr, &prespacebuf, &postspacebuf);
  96
  97   if(th->group == originalgroup) {
  98     if(!showchildren && th->group == originalgroup && th->children)
  99       prespacebuf[0] = '*';
 100     else
 101       prespacebuf[0] = ' ';
 102
 103     prespacebuf[1] = '>';
 104
 105     parentbuf[0] = '\0';
 106   } else {
 107     /* show the ids of other groups */
 108
 109     snprintf(parentbuf, sizeof(parentbuf), "%-10d %s", th->group->id, th->group->name->content);
 110   }
 111
 112   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, (irc_in_addr_is_ipv4(&th->ip))?(th->nodebits - 96):th->nodebits, parentbuf);
 113
 114   /* Make sure we're not seeing this subtree again. */
 115   th->marker = -1;
 116
 117   for(th=th->children;th;th=th->nextbychild)
 118     outputtree(np, marker, originalgroup, th, depth + 1, showchildren);
 119 }
 120
 121 static char *formatflags(int flags) {
 122   static char buf[512];
 123
 124   buf[0] = '\0';
 125
 126   if(flags & TRUST_ENFORCE_IDENT)
 127     strncat(buf, "enforcing ident", 512);
 128
 129   if(flags & TRUST_NO_CLEANUP) {
 130     if(buf[0])
 131       strncat(buf, ", ", 512);
 132
 133     strncat(buf, "exempt from cleanup", 512);
 134   }
 135
 136   if(flags & TRUST_PROTECTED) {
 137     if(buf[0])
 138       strncat(buf, ", ", 512);
 139
 140     strncat(buf, "protected", 512);
 141   }
 142
 143   if(flags & TRUST_RELIABLE_USERNAME) {
 144     if(buf[0])
 145       strncat(buf, ", ", 512);
 146
 147     strncat(buf, "reliable username", 512);
 148   }
 149
 150   buf[512-1] = '\0';
 151
 152   return buf;
 153 }
 154
 155 static char *formatlimit(unsigned int limit) {
 156   static char buf[64];
 157
 158   if(limit)
 159     snprintf(buf, sizeof(buf), "%u", limit);
 160   else
 161     strncpy(buf, "unlimited", sizeof(buf));
 162
 163   return buf;
 164 }
 165
 166 static void displaygroup(nick *sender, trustgroup *tg, int showchildren) {
 167   trusthost *th, **p2;
 168   unsigned int marker;
 169   array parents;
 170   int i;
 171   time_t t = getnettime();
 172
 173   /* abusing the ternary operator a bit :( */
 174   controlreply(sender, "Name:            : %s", tg->name->content);
 175   controlreply(sender, "Trusted for      : %s", formatlimit(tg->trustedfor));
 176   controlreply(sender, "Currently using  : %d", tg->count);
 177   controlreply(sender, "Clients per user : %s", formatlimit(tg->maxperident));
 178   controlreply(sender, "Flags            : %s", formatflags(tg->flags));
 179   controlreply(sender, "Contact:         : %s", tg->contact->content);
 180   controlreply(sender, "Expires in       : %s", (tg->expires)?((tg->expires>t)?longtoduration(tg->expires - t, 2):"the past (will be removed during next cleanup)"):"never");
 181   controlreply(sender, "Created by       : %s", tg->createdby->content);
 182   controlreply(sender, "Comment:         : %s", tg->comment->content);
 183   controlreply(sender, "ID:              : %u", tg->id);
 184   controlreply(sender, "Last used        : %s", (tg->count>0)?"(now)":((tg->lastseen>0)?trusts_timetostr(tg->lastseen):"(never)"));
 185   controlreply(sender, "Max usage        : %d", tg->maxusage);
 186   controlreply(sender, "Last max reset   : %s", tg->lastmaxusereset?trusts_timetostr(tg->lastmaxusereset):"(never)");
 187
 188   controlreply(sender, "---");
 189   controlreply(sender, "Attributes: * (has hidden children, show with -v), > (belongs to this trust group)");
 190   controlreply(sender, "Host                            Current    Max        Last seen             Max per Node    Node Mask      Group ID   Group name");
 191
 192   marker = nextthmarker();
 193   array_init(&parents, sizeof(trusthost *));
 194
 195   for(th=tg->hosts;th;th=th->next)
 196     marktree(&parents, marker, th, showchildren);
 197
 198   p2 = (trusthost **)(parents.content);
 199   for(i=0;i<parents.cursi;i++)
 200     outputtree(sender, marker, tg, p2[i], 0, showchildren);
 201
 202   array_free(&parents);
 203
 204   controlreply(sender, "End of list.");
 205 }
 206
 207 static int trusts_cmdtrustlist(void *source, int cargc, char **cargv) {
 208   nick *sender = source;
 209   trustgroup *tg = NULL;
 210   int found = 0, remaining = 50;
 211   char *name;
 212   trusthost *th;
 213   struct irc_in_addr ip;
 214   unsigned char bits;
 215   int showchildren;
 216
 217   if(cargc < 1)
 218     return CMD_USAGE;
 219
 220   if(strcmp(cargv[0], "-v") == 0) {
 221     if(cargc < 2)
 222       return CMD_USAGE;
 223
 224     showchildren = 1;
 225     name = cargv[1];
 226   } else {
 227     showchildren = 0;
 228     name = cargv[0];
 229   }
 230
 231   tg = tg_strtotg(name);
 232
 233   if(tg) {
 234     displaygroup(sender, tg, showchildren);
 235     return CMD_OK;
 236   }
 237
 238   if(ipmask_parse(name, &ip, &bits)) {
 239     th = th_getbyhost(&ip);
 240
 241     if(!th) {
 242       controlreply(sender, "Specified IP address is not trusted.");
 243       return CMD_OK;
 244     }
 245
 246     displaygroup(sender, th->group, showchildren);
 247     return CMD_OK;
 248   }
 249
 250   for(tg=tglist;tg;tg=tg->next) {
 251     if(match(name, tg->name->content))
 252       continue;
 253
 254     displaygroup(sender, tg, showchildren);
 255     if(--remaining == 0) {
 256       controlreply(sender, "Maximum number of matches reached.");
 257       return CMD_OK;
 258     }
 259     found = 1;
 260   }
 261
 262   if(!found)
 263     controlreply(sender, "No matches found.");
 264
 265   return CMD_OK;
 266 }
 267
 268 static int trusts_cmdtrustglinesuggest(void *source, int cargc, char **cargv) {
 269   nick *sender = source;
 270   char mask[512];
 271   char *p, *user, *host;
 272   struct irc_in_addr ip;
 273   unsigned char bits;
 274   int count;
 275   glinebuf gbuf;
 276   char creator[32];
 277
 278   if(cargc < 1)
 279     return CMD_USAGE;
 280
 281   strncpy(mask, cargv[0], sizeof(mask));
 282
 283   p = strchr(mask, '@');
 284
 285   if(!p)
 286     return CMD_USAGE;
 287
 288   user = mask;
 289   host = p + 1;
 290   *p = '\0';
 291
 292   if(!ipmask_parse(host, &ip, &bits)) {
 293     controlreply(sender, "Invalid CIDR.");
 294     return CMD_ERROR;
 295   }
 296
 297   snprintf(creator, sizeof(creator), "#%s", sender->authname);
 298
 299   glinebufinit(&gbuf, 0);
 300   glinebufaddbyip(&gbuf, user, &ip, 128, 0, creator, "Simulate", getnettime(), getnettime(), getnettime());
 301   glinebufcounthits(&gbuf, &count, NULL);
 302   glinebufspew(&gbuf, sender);
 303   glinebufabort(&gbuf);
 304
 305   controlreply(sender, "Total hits: %d", count);
 306
 307   return CMD_OK;
 308 }
 309
 310 static int trusts_cmdtrustspew(void *source, int cargc, char **cargv) {
 311   nick *sender = source;
 312   searchASTExpr tree;
 313
 314   if(cargc < 1)
 315     return CMD_USAGE;
 316
 317   tree = NSASTNode(tgroup_parse, NSASTLiteral(cargv[0]));
 318   return ast_nicksearch(&tree, controlreply, sender, NULL, printnick_channels, NULL, NULL, 2000);
 319 }
 320
 321 static int commandsregistered;
 322
 323 static void registercommands(int hooknum, void *arg) {
 324   if(commandsregistered)
 325     return;
 326   commandsregistered = 1;
 327
 328   registercontrolhelpcmd("trustlist", NO_OPER, 2, trusts_cmdtrustlist, "Usage: trustlist [-v] <#id|name|IP>\nShows trust data for the specified trust group.");
 329   registercontrolhelpcmd("trustglinesuggest", NO_OPER, 1, trusts_cmdtrustglinesuggest, "Usage: trustglinesuggest <user@host>\nSuggests glines for the specified hostmask.");
 330   registercontrolhelpcmd("trustspew", NO_OPER, 1, trusts_cmdtrustspew, "Usage: trustspew <#id|name>\nShows currently connected users for the specified trust group.");
 331 }
 332
 333 static void deregistercommands(int hooknum, void *arg) {
 334   if(!commandsregistered)
 335     return;
 336   commandsregistered = 0;
 337
 338   deregistercontrolcmd("trustlist", trusts_cmdtrustlist);
 339   deregistercontrolcmd("trustglinesuggest", trusts_cmdtrustglinesuggest);
 340   deregistercontrolcmd("trustspew", trusts_cmdtrustspew);
 341 }
 342
 343 void _init(void) {
 344   registerhook(HOOK_TRUSTS_DB_LOADED, registercommands);
 345   registerhook(HOOK_TRUSTS_DB_CLOSED, deregistercommands);
 346
 347   if(trustsdbloaded)
 348     registercommands(0, NULL);
 349 }
 350
 351 void _fini(void) {
 352   deregisterhook(HOOK_TRUSTS_DB_LOADED, registercommands);
 353   deregisterhook(HOOK_TRUSTS_DB_CLOSED, deregistercommands);
 354
 355   deregistercommands(0, NULL);
 356 }