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
  79   if(th->marker != marker)
  80     return;
  81
  82   cidrstr = trusts_cidr2str(th->ip, th->mask);
  83   calculatespaces(depth + 1, 20 + 1, cidrstr, &prespacebuf, &postspacebuf);
  84
  85   if(th->group == originalgroup) {
  86     prespacebuf[0] = '>';
  87
  88     parentbuf[0] = '\0';
  89   } else {
  90     /* show the ids of other groups */
  91
  92     snprintf(parentbuf, sizeof(parentbuf), "%-10d %s", th->group->id, th->group->name->content);
  93   }
  94
  95   controlreply(np, "%s%s%s %-10d %-10d %-21s%s", prespacebuf, cidrstr, postspacebuf, th->count, th->maxusage, (th->count>0)?"(now)":((th->lastseen>0)?trusts_timetostr(th->lastseen):"(never)"), parentbuf);
  96
  97   for(th=th->children;th;th=th->nextbychild)
  98     outputtree(np, marker, originalgroup, th, depth + 1);
  99 }
 100
 101 static void displaygroup(nick *sender, trustgroup *tg) {
 102   trusthost *th, **p2;
 103   unsigned int marker;
 104   array parents;
 105   int i;
 106   time_t t = time(NULL);
 107
 108   /* abusing the ternary operator a bit :( */
 109   controlreply(sender, "Name:            : %s", tg->name->content);
 110   controlreply(sender, "Trusted for      : %d", tg->trustedfor);
 111   controlreply(sender, "Currently using  : %d", tg->count);
 112   controlreply(sender, "Clients per user : %d (%senforcing ident)", tg->maxperident, tg->mode?"":"not ");
 113   controlreply(sender, "Contact:         : %s", tg->contact->content);
 114   controlreply(sender, "Expires in       : %s", (tg->expires>t)?longtoduration(tg->expires - t, 2):"(the past -- BUG)");
 115   controlreply(sender, "Last changed by  : %s", tg->createdby->content);
 116   controlreply(sender, "Comment:         : %s", tg->comment->content);
 117   controlreply(sender, "ID:              : %u", tg->id);
 118   controlreply(sender, "Last used        : %s", (tg->count>0)?"(now)":((tg->lastseen>0)?trusts_timetostr(tg->lastseen):"(never)"));
 119   controlreply(sender, "Max usage        : %d", tg->maxusage);
 120   controlreply(sender, "Last max reset   : %s", tg->lastmaxusereset?trusts_timetostr(tg->lastmaxusereset):"(never)");
 121
 122   controlreply(sender, "Host                 Current    Max        Last seen            Group ID   Group name");
 123
 124   marker = nextthmarker();
 125   array_init(&parents, sizeof(trusthost *));
 126
 127   for(th=tg->hosts;th;th=th->next)
 128     marktree(&parents, marker, th);
 129
 130   p2 = (trusthost **)(parents.content);
 131   for(i=0;i<parents.cursi;i++)
 132     outputtree(sender, marker, tg, p2[i], 0);
 133
 134   array_free(&parents);
 135
 136   controlreply(sender, "End of list.");
 137 }
 138
 139 static int trusts_cmdtrustlist(void *source, int cargc, char **cargv) {
 140   nick *sender = source;
 141   trustgroup *tg = NULL;
 142   int found = 0, remaining = 50;
 143   char *name;
 144   trusthost *th;
 145   uint32_t ip;
 146   short mask;
 147
 148   if(cargc < 1)
 149     return CMD_USAGE;
 150
 151   name = cargv[0];
 152
 153   tg = tg_strtotg(name);
 154
 155   if(tg) {
 156     displaygroup(sender, tg);
 157     return CMD_OK;
 158   }
 159
 160   if(trusts_parsecidr(name, &ip, &mask)) {
 161     th = th_getbyhost(ip);
 162
 163     if(!th) {
 164       controlreply(sender, "Specified IP address is not trusted.");
 165       return CMD_OK;
 166     }
 167
 168     displaygroup(sender, th->group);
 169     return CMD_OK;
 170   }
 171
 172   for(tg=tglist;tg;tg=tg->next) {
 173     if(match(name, tg->name->content))
 174       continue;
 175
 176     displaygroup(sender, tg);
 177     if(--remaining == 0) {
 178       controlreply(sender, "Maximum number of matches reached.");
 179       return CMD_OK;
 180     }
 181     found = 1;
 182   }
 183
 184   if(!found)
 185     controlreply(sender, "No matches found.");
 186
 187   return CMD_OK;
 188 }
 189
 190 static int comparetgs(const void *_a, const void *_b) {
 191   const trustgroup *a = _a;
 192   const trustgroup *b = _b;
 193
 194   if(a->id > b->id)
 195     return 1;
 196   if(a->id < b-> id)
 197     return -1;
 198   return 0;
 199 }
 200
 201 static int trusts_cmdtrustdump(void *source, int argc, char **argv) {
 202   trusthost *th;
 203   trustgroup *tg, **atg;
 204   unsigned int wanted, max, maxid, totalcount, i, groupcount, linecount;
 205   nick *np = source;
 206
 207   if((argc < 2) || (argv[0][0] != '#'))
 208     return CMD_USAGE;
 209
 210   wanted = atoi(&argv[0][1]);
 211   max = atoi(argv[1]);
 212
 213   for(maxid=totalcount=0,tg=tglist;tg;tg=tg->next) {
 214     if(totalcount == 0 || tg->id > maxid)
 215       maxid = tg->id;
 216
 217     totalcount++;
 218   }
 219
 220   if(maxid > totalcount) {
 221     controlreply(np, "Start ID cannot exceed current maximum group ID (#%u)", maxid);
 222     return CMD_OK;
 223   }
 224
 225   atg = nsmalloc(POOL_TRUSTS, sizeof(trusthost *) * totalcount);
 226   if(!atg) {
 227     controlreply(np, "Memory error.");
 228     return CMD_ERROR;
 229   }
 230
 231   for(i=0,tg=tglist;i<totalcount&&tg;tg=tg->next,i++)
 232     atg[i] = tg;
 233
 234   qsort(atg, totalcount, sizeof(trustgroup *), comparetgs);
 235
 236   for(i=0;i<totalcount;i++)
 237     if(atg[i]->id >= wanted)
 238       break;
 239
 240   for(groupcount=linecount=0;i<totalcount;i++) {
 241     linecount++;
 242     groupcount++;
 243
 244     controlreply(np, "G,%s", dumptg(atg[i], 1));
 245
 246     for(th=atg[i]->hosts;th;th=th->next) {
 247       linecount++;
 248       controlreply(np, "H,%s", dumpth(th, 1));
 249     }
 250
 251     if(--max == 0)
 252       break;
 253   }
 254   nsfree(POOL_TRUSTS, atg);
 255
 256   controlreply(np, "End of list, %u groups and %u lines returned.", groupcount, linecount);
 257   return CMD_OK;
 258 }
 259
 260 static int commandsregistered;
 261
 262 static void registercommands(int hooknum, void *arg) {
 263   if(commandsregistered)
 264     return;
 265   commandsregistered = 1;
 266
 267   registercontrolhelpcmd("trustlist", NO_OPER, 1, trusts_cmdtrustlist, "Usage: trustlist <#id|name|id>\nShows trust data for the specified trust group.");
 268   registercontrolhelpcmd("trustdump", NO_OPER, 2, trusts_cmdtrustdump, "Usage: trustdump <#id> <number>");
 269 }
 270
 271 static void deregistercommands(int hooknum, void *arg) {
 272   if(!commandsregistered)
 273     return;
 274   commandsregistered = 0;
 275
 276   deregistercontrolcmd("trustlist", trusts_cmdtrustlist);
 277   deregistercontrolcmd("trustdump", trusts_cmdtrustdump);
 278 }
 279
 280 void _init(void) {
 281   registerhook(HOOK_TRUSTS_DB_LOADED, registercommands);
 282   registerhook(HOOK_TRUSTS_DB_CLOSED, deregistercommands);
 283
 284   if(trustsdbloaded)
 285     registercommands(0, NULL);
 286 }
 287
 288 void _fini(void) {
 289   deregisterhook(HOOK_TRUSTS_DB_LOADED, registercommands);
 290   deregisterhook(HOOK_TRUSTS_DB_CLOSED, deregistercommands);
 291
 292   deregistercommands(0, NULL);
 293 }