bandb/bantool.c

   1 /**
   2  *  ircd-ratbox: A slightly useful ircd.
   3  *  bantool.c: The ircd-ratbox database managment tool.
   4  *
   5  *  Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center
   6  *  Copyright (C) 1996-2002 Hybrid Development Team
   7  *  Copyright (C) 2002-2008 ircd-ratbox development team
   8  *  Copyright (C) 2008 Daniel J Reidy <dubkat@gmail.com>
   9  *
  10  *  This program is free software; you can redistribute it and/or modify
  11  *  it under the terms of the GNU General Public License as published by
  12  *  the Free Software Foundation; either version 2 of the License, or
  13  *  (at your option) any later version.
  14  *
  15  *  This program is distributed in the hope that it will be useful,
  16  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  *  GNU General Public License for more details.
  19  *
  20  *  You should have received a copy of the GNU General Public License
  21  *  along with this program; if not, write to the Free Software
  22  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
  23  *  USA
  24  *
  25  * The following server admins have either contributed various configs to test against,
  26  * or helped with debugging and feature requests. Many thanks to them.
  27  * stevoo / efnet.port80.se
  28  * AndroSyn / irc2.choopa.net, irc.igs.ca
  29  * Salvation / irc.blessed.net
  30  * JamesOff / efnet.demon.co.uk
  31  *
  32  * Thanks to AndroSyn for challenging me to learn C on the fly :)
  33  * BUGS Direct Question, Bug Reports, and Feature Requests to #ratbox on EFnet.
  34  * BUGS Complaints >/dev/null
  35  *
  36  */
  37
  38 #include <stdio.h>
  39 #include <stdlib.h>
  40 #include <time.h>
  41
  42 #include "stdinc.h"
  43 #include "rsdb.h"
  44
  45 #define EmptyString(x) ((x == NULL) || (*(x) == '\0'))
  46
  47 #define BT_VERSION "0.4.1"
  48
  49 typedef enum
  50 {
  51         BANDB_KLINE,
  52         BANDB_KLINE_PERM,
  53         BANDB_DLINE,
  54         BANDB_DLINE_PERM,
  55         BANDB_XLINE,
  56         BANDB_XLINE_PERM,
  57         BANDB_RESV,
  58         BANDB_RESV_PERM,
  59         LAST_BANDB_TYPE
  60 } bandb_type;
  61
  62
  63 static char bandb_letter[LAST_BANDB_TYPE] = {
  64         'K', 'K', 'D', 'D', 'X', 'X', 'R', 'R'
  65 };
  66
  67 static const char *bandb_table[LAST_BANDB_TYPE] = {
  68         "kline", "kline", "dline", "dline", "xline", "xline", "resv", "resv"
  69 };
  70
  71 static const char *bandb_suffix[LAST_BANDB_TYPE] = {
  72         "", ".perm",
  73         "", ".perm",
  74         "", ".perm",
  75         "", ".perm"
  76 };
  77
  78 static char me[PATH_MAX];
  79
  80 /* *INDENT-OFF* */
  81 /* report counters */
  82 struct counter
  83 {
  84         unsigned int klines;
  85         unsigned int dlines;
  86         unsigned int xlines;
  87         unsigned int resvs;
  88         unsigned int error;
  89 } count = {0, 0, 0, 0, 0};
  90
  91 /* flags set by command line options */
  92 struct flags
  93 {
  94         bool none;
  95         bool export;
  96         bool import;
  97         bool verify;
  98         bool vacuum;
  99         bool pretend;
 100         bool verbose;
 101         bool wipe;
 102         bool dupes_ok;
 103 } flag = {true, false, false, false, false, false, false, false, false};
 104 /* *INDENT-ON* */
 105
 106 static int table_has_rows(const char *table);
 107 static int table_exists(const char *table);
 108
 109 static const char *clean_gecos_field(const char *gecos);
 110 static char *bt_smalldate(const char *string);
 111 static char *getfield(char *newline);
 112 static char *strip_quotes(const char *string);
 113 static char *mangle_reason(const char *string);
 114 static char *escape_quotes(const char *string);
 115
 116 static void db_error_cb(const char *errstr);
 117 static void db_reclaim_slack(void);
 118 static void export_config(const char *conf, int id);
 119 static void import_config(const char *conf, int id);
 120 static void check_schema(void);
 121 static void print_help(int i_exit) __attribute__((noreturn));
 122 static void wipe_schema(void);
 123 static void drop_dupes(const char *user, const char *host, const char *t);
 124
 125 /**
 126  *  swing your pants
 127  */
 128 int
 129 main(int argc, char *argv[])
 130 {
 131         char etc[PATH_MAX];
 132         char conf[PATH_MAX];
 133         int opt;
 134         int i;
 135
 136         rb_strlcpy(me, argv[0], sizeof(me));
 137
 138         while((opt = getopt(argc, argv, "hieuspvwd")) != -1)
 139         {
 140                 switch (opt)
 141                 {
 142                 case 'h':
 143                         print_help(EXIT_SUCCESS);
 144                         break;
 145                 case 'i':
 146                         flag.none = false;
 147                         flag.import = true;
 148                         break;
 149                 case 'e':
 150                         flag.none = false;
 151                         flag.export = true;
 152                         break;
 153                 case 'u':
 154                         flag.none = false;
 155                         flag.verify = true;
 156                         break;
 157                 case 's':
 158                         flag.none = false;
 159                         flag.vacuum = true;
 160                         break;
 161                 case 'p':
 162                         flag.pretend = true;
 163                         break;
 164                 case 'v':
 165                         flag.verbose = true;
 166                         break;
 167                 case 'w':
 168                         flag.wipe = true;
 169                         break;
 170                 case 'd':
 171                         flag.dupes_ok = true;
 172                         break;
 173                 default:        /* '?' */
 174                         print_help(EXIT_FAILURE);
 175                 }
 176         }
 177
 178         /* they should really read the help. */
 179         if(flag.none)
 180                 print_help(EXIT_FAILURE);
 181
 182         if((flag.import && flag.export) || (flag.export && flag.wipe)
 183            || (flag.verify && flag.pretend) || (flag.export && flag.pretend))
 184         {
 185                 fprintf(stderr, "* Error: Conflicting flags.\n");
 186                 if(flag.export && flag.pretend)
 187                         fprintf(stderr, "* There is nothing to 'pretend' when exporting.\n");
 188
 189                 fprintf(stderr, "* For an explination of commands, run: %s -h\n", me);
 190                 exit(EXIT_FAILURE);
 191         }
 192
 193         if(argv[optind] != NULL)
 194                 rb_strlcpy(etc, argv[optind], sizeof(etc));
 195         else
 196                 rb_strlcpy(etc, ETCPATH, sizeof(ETCPATH));
 197
 198         fprintf(stdout,
 199                 "* solanum bantool v.%s\n", BT_VERSION);
 200
 201         if(flag.pretend == false)
 202         {
 203                 if(rsdb_init(db_error_cb) == -1)
 204                 {
 205                         fprintf(stderr, "* Error: Unable to open database\n");
 206                         exit(EXIT_FAILURE);
 207                 }
 208                 check_schema();
 209
 210                 if(flag.vacuum)
 211                         db_reclaim_slack();
 212
 213                 if(flag.import && flag.wipe)
 214                 {
 215                         flag.dupes_ok = true;   /* dont check for dupes if we are wiping the db clean */
 216                         for(i = 0; i < 3; i++)
 217                                 fprintf(stdout,
 218                                         "* WARNING: YOU ARE ABOUT TO WIPE YOUR DATABASE!\n");
 219
 220                         fprintf(stdout, "* Press ^C to abort! ");
 221                         fflush(stdout);
 222                         rb_sleep(10, 0);
 223                         fprintf(stdout, "Carrying on...\n");
 224                         wipe_schema();
 225                 }
 226         }
 227         if(flag.verbose && flag.dupes_ok == true)
 228                 fprintf(stdout, "* Allowing duplicate bans...\n");
 229
 230         /* checking for our files to import or export */
 231         for(i = 0; i < LAST_BANDB_TYPE; i++)
 232         {
 233                 if (snprintf(conf, sizeof(conf), "%s/%s.conf%s",
 234                             etc, bandb_table[i], bandb_suffix[i]) >= sizeof(conf)) {
 235                         fprintf(stderr, "* Error: Config filename too long\n");
 236                         exit(EXIT_FAILURE);
 237                 }
 238
 239                 if(flag.import && flag.pretend == false)
 240                         rsdb_transaction(RSDB_TRANS_START);
 241
 242                 if(flag.import)
 243                         import_config(conf, i);
 244
 245                 if(flag.export)
 246                         export_config(conf, i);
 247
 248                 if(flag.import && flag.pretend == false)
 249                         rsdb_transaction(RSDB_TRANS_END);
 250         }
 251
 252         if(flag.import)
 253         {
 254                 if(count.error && flag.verbose)
 255                         fprintf(stderr, "* I was unable to locate %u config files to import.\n",
 256                                 count.error);
 257
 258                 fprintf(stdout, "* Import Stats: Klines: %u, Dlines: %u, Xlines: %u, Resvs: %u \n",
 259                         count.klines, count.dlines, count.xlines, count.resvs);
 260
 261                 fprintf(stdout,
 262                         "*\n* If your IRC server is currently running, newly imported bans \n* will not take effect until you issue the command: /quote rehash bans\n");
 263
 264                 if(flag.pretend)
 265                         fprintf(stdout,
 266                                 "* Pretend mode engaged. Nothing was actually entered into the database.\n");
 267         }
 268
 269         return 0;
 270 }
 271
 272
 273 /**
 274  * export the database to old-style flat files
 275  */
 276 static void
 277 export_config(const char *conf, int id)
 278 {
 279         struct rsdb_table table;
 280         static char sql[BUFSIZE * 2];
 281         static char buf[512];
 282         FILE *fd = NULL;
 283         int j;
 284
 285         /* for sanity sake */
 286         const int mask1 = 0;
 287         const int mask2 = 1;
 288         const int reason = 2;
 289         const int oper = 3;
 290         const int ts = 4;
 291         /* const int perm = 5; */
 292
 293         if(!table_has_rows(bandb_table[id]))
 294                 return;
 295
 296         if(strstr(conf, ".perm") != 0)
 297                 snprintf(sql, sizeof(sql),
 298                             "SELECT DISTINCT mask1,mask2,reason,oper,time FROM %s WHERE perm = 1 ORDER BY time",
 299                             bandb_table[id]);
 300         else
 301                 snprintf(sql, sizeof(sql),
 302                             "SELECT DISTINCT mask1,mask2,reason,oper,time FROM %s WHERE perm = 0 ORDER BY time",
 303                             bandb_table[id]);
 304
 305         rsdb_exec_fetch(&table, sql);
 306         if(table.row_count <= 0)
 307         {
 308                 rsdb_exec_fetch_end(&table);
 309                 return;
 310         }
 311
 312         if(flag.verbose)
 313                 fprintf(stdout, "* checking for %s: ", conf);   /* debug  */
 314
 315         /* open config for reading, or skip to the next */
 316         if(!(fd = fopen(conf, "w")))
 317         {
 318                 if(flag.verbose)
 319                         fprintf(stdout, "\tmissing.\n");
 320                 count.error++;
 321                 return;
 322         }
 323
 324         for(j = 0; j < table.row_count; j++)
 325         {
 326                 switch (id)
 327                 {
 328                 case BANDB_DLINE:
 329                 case BANDB_DLINE_PERM:
 330                         snprintf(buf, sizeof(buf),
 331                                     "\"%s\",\"%s\",\"\",\"%s\",\"%s\",%s\n",
 332                                     table.row[j][mask1],
 333                                     mangle_reason(table.row[j][reason]),
 334                                     bt_smalldate(table.row[j][ts]),
 335                                     table.row[j][oper], table.row[j][ts]);
 336                         break;
 337
 338                 case BANDB_XLINE:
 339                 case BANDB_XLINE_PERM:
 340                         snprintf(buf, sizeof(buf),
 341                                     "\"%s\",\"0\",\"%s\",\"%s\",%s\n",
 342                                     escape_quotes(table.row[j][mask1]),
 343                                     mangle_reason(table.row[j][reason]),
 344                                     table.row[j][oper], table.row[j][ts]);
 345                         break;
 346
 347                 case BANDB_RESV:
 348                 case BANDB_RESV_PERM:
 349                         snprintf(buf, sizeof(buf),
 350                                     "\"%s\",\"%s\",\"%s\",%s\n",
 351                                     table.row[j][mask1],
 352                                     mangle_reason(table.row[j][reason]),
 353                                     table.row[j][oper], table.row[j][ts]);
 354                         break;
 355
 356
 357                 default:        /* Klines */
 358                         snprintf(buf, sizeof(buf),
 359                                     "\"%s\",\"%s\",\"%s\",\"\",\"%s\",\"%s\",%s\n",
 360                                     table.row[j][mask1], table.row[j][mask2],
 361                                     mangle_reason(table.row[j][reason]),
 362                                     bt_smalldate(table.row[j][ts]), table.row[j][oper],
 363                                     table.row[j][ts]);
 364                         break;
 365                 }
 366
 367                 fprintf(fd, "%s", buf);
 368         }
 369
 370         rsdb_exec_fetch_end(&table);
 371         if(flag.verbose)
 372                 fprintf(stdout, "\twritten.\n");
 373         fclose(fd);
 374 }
 375
 376 /**
 377  * attempt to condense the individual conf functions into one
 378  */
 379 static void
 380 import_config(const char *conf, int id)
 381 {
 382         FILE *fd;
 383
 384         char line[BUFSIZE];
 385         char *p;
 386         int i = 0;
 387
 388         char f_perm = 0;
 389         const char *f_mask1 = NULL;
 390         const char *f_mask2 = NULL;
 391         const char *f_oper = NULL;
 392         const char *f_time = NULL;
 393         const char *f_reason = NULL;
 394         const char *f_oreason = NULL;
 395         char newreason[REASONLEN];
 396
 397         if(flag.verbose)
 398                 fprintf(stdout, "* checking for %s: ", conf);   /* debug  */
 399
 400         /* open config for reading, or skip to the next */
 401         if(!(fd = fopen(conf, "r")))
 402         {
 403                 if(flag.verbose)
 404                         fprintf(stdout, "%*s", strlen(bandb_suffix[id]) > 0 ? 10 : 15,
 405                                 "missing.\n");
 406                 count.error++;
 407                 return;
 408         }
 409
 410         if(strstr(conf, ".perm") != 0)
 411                 f_perm = 1;
 412
 413
 414         /* xline
 415          * "SYSTEM","0","banned","stevoo!stevoo@efnet.port80.se{stevoo}",1111080437
 416          * resv
 417          * "OseK","banned nickname","stevoo!stevoo@efnet.port80.se{stevoo}",1111031619
 418          * dline
 419          * "194.158.192.0/19","laptop scammers","","2005/3/17 05.33","stevoo!stevoo@efnet.port80.se{stevoo}",1111033988
 420          */
 421         while(fgets(line, sizeof(line), fd))
 422         {
 423                 if((p = strpbrk(line, "\r\n")) != NULL)
 424                         *p = '\0';
 425
 426                 if((*line == '\0') || (*line == '#'))
 427                         continue;
 428
 429                 /* mask1 */
 430                 f_mask1 = getfield(line);
 431
 432                 if(EmptyString(f_mask1))
 433                         continue;
 434
 435                 /* mask2 */
 436                 switch (id)
 437                 {
 438                 case BANDB_XLINE:
 439                 case BANDB_XLINE_PERM:
 440                         f_mask1 = escape_quotes(clean_gecos_field(f_mask1));
 441                         getfield(NULL); /* empty field */
 442                         break;
 443
 444                 case BANDB_RESV:
 445                 case BANDB_RESV_PERM:
 446                 case BANDB_DLINE:
 447                 case BANDB_DLINE_PERM:
 448                         break;
 449
 450                 default:
 451                         f_mask2 = getfield(NULL);
 452                         if(EmptyString(f_mask2))
 453                                 continue;
 454                         break;
 455                 }
 456
 457                 /* reason */
 458                 f_reason = getfield(NULL);
 459                 if(EmptyString(f_reason))
 460                         continue;
 461
 462                 /* oper comment */
 463                 switch (id)
 464                 {
 465                 case BANDB_KLINE:
 466                 case BANDB_KLINE_PERM:
 467                 case BANDB_DLINE:
 468                 case BANDB_DLINE_PERM:
 469                         f_oreason = getfield(NULL);
 470                         getfield(NULL);
 471                         break;
 472
 473                 default:
 474                         break;
 475                 }
 476
 477                 f_oper = getfield(NULL);
 478                 f_time = strip_quotes(f_oper + strlen(f_oper) + 2);
 479                 if(EmptyString(f_oper))
 480                         f_oper = "unknown";
 481
 482                 /* meh */
 483                 if(id == BANDB_KLINE || id == BANDB_KLINE_PERM)
 484                 {
 485                         if(strstr(f_mask1, "!") != NULL)
 486                         {
 487                                 fprintf(stderr,
 488                                         "* SKIPPING INVALID KLINE %s@%s set by %s\n",
 489                                         f_mask1, f_mask2, f_oper);
 490                                 fprintf(stderr, "  You may wish to re-apply it correctly.\n");
 491                                 continue;
 492                         }
 493                 }
 494
 495                 /* append operreason_field to reason_field */
 496                 if(!EmptyString(f_oreason))
 497                         snprintf(newreason, sizeof(newreason), "%s | %s", f_reason, f_oreason);
 498                 else
 499                         snprintf(newreason, sizeof(newreason), "%s", f_reason);
 500
 501                 if(flag.pretend == false)
 502                 {
 503                         if(flag.dupes_ok == false)
 504                                 drop_dupes(f_mask1, f_mask2, bandb_table[id]);
 505
 506                         rsdb_exec(NULL,
 507                                   "INSERT INTO %s (mask1, mask2, oper, time, perm, reason) VALUES('%Q','%Q','%Q','%Q','%d','%Q')",
 508                                   bandb_table[id], f_mask1, f_mask2, f_oper, f_time, f_perm,
 509                                   newreason);
 510                 }
 511
 512                 if(flag.pretend && flag.verbose)
 513                         fprintf(stdout,
 514                                 "%s: perm(%d) mask1(%s) mask2(%s) oper(%s) reason(%s) time(%s)\n",
 515                                 bandb_table[id], f_perm, f_mask1, f_mask2, f_oper, newreason,
 516                                 f_time);
 517
 518                 i++;
 519         }
 520
 521         switch (bandb_letter[id])
 522         {
 523         case 'K':
 524                 count.klines += i;
 525                 break;
 526         case 'D':
 527                 count.dlines += i;
 528                 break;
 529         case 'X':
 530                 count.xlines += i;
 531                 break;
 532         case 'R':
 533                 count.resvs += i;
 534                 break;
 535         default:
 536                 break;
 537         }
 538
 539         if(flag.verbose)
 540                 fprintf(stdout, "%*s\n", strlen(bandb_suffix[id]) > 0 ? 10 : 15, "imported.");
 541
 542         fclose(fd);
 543
 544         return;
 545 }
 546
 547 /**
 548  * getfield
 549  *
 550  * inputs       - input buffer
 551  * output       - next field
 552  * side effects - field breakup for ircd.conf file.
 553  */
 554 char *
 555 getfield(char *newline)
 556 {
 557         static char *line = NULL;
 558         char *end, *field;
 559
 560         if(newline != NULL)
 561                 line = newline;
 562
 563         if(line == NULL)
 564                 return (NULL);
 565
 566         field = line;
 567
 568         /* XXX make this skip to first " if present */
 569         if(*field == '"')
 570                 field++;
 571         else
 572                 return (NULL);  /* mal-formed field */
 573
 574         end = strchr(line, ',');
 575
 576         while(1)
 577         {
 578                 /* no trailing , - last field */
 579                 if(end == NULL)
 580                 {
 581                         end = line + strlen(line);
 582                         line = NULL;
 583
 584                         if(*end == '"')
 585                         {
 586                                 *end = '\0';
 587                                 return field;
 588                         }
 589                         else
 590                                 return NULL;
 591                 }
 592                 else
 593                 {
 594                         /* look for a ", to mark the end of a field.. */
 595                         if(*(end - 1) == '"')
 596                         {
 597                                 line = end + 1;
 598                                 end--;
 599                                 *end = '\0';
 600                                 return field;
 601                         }
 602
 603                         /* search for the next ',' */
 604                         end++;
 605                         end = strchr(end, ',');
 606                 }
 607         }
 608
 609         return NULL;
 610 }
 611
 612 /**
 613  * strip away "quotes" from around strings
 614  */
 615 static char *
 616 strip_quotes(const char *string)
 617 {
 618         static char buf[14];    /* int(11) + 2 + \0 */
 619         char *str = buf;
 620
 621         if(string == NULL)
 622                 return NULL;
 623
 624         while(*string)
 625         {
 626                 if(*string != '"')
 627                 {
 628                         *str++ = *string;
 629                 }
 630                 string++;
 631         }
 632         *str = '\0';
 633         return buf;
 634 }
 635
 636 /**
 637  * escape quotes in a string
 638  */
 639 static char *
 640 escape_quotes(const char *string)
 641 {
 642         static char buf[BUFSIZE * 2];
 643         char *str = buf;
 644
 645         if(string == NULL)
 646                 return NULL;
 647
 648         while(*string)
 649         {
 650                 if(*string == '"')
 651                 {
 652                         *str++ = '\\';
 653                         *str++ = '"';
 654                 }
 655                 else
 656                 {
 657                         *str++ = *string;
 658                 }
 659                 string++;
 660         }
 661         *str = '\0';
 662         return buf;
 663 }
 664
 665
 666 static char *
 667 mangle_reason(const char *string)
 668 {
 669         static char buf[BUFSIZE * 2];
 670         char *str = buf;
 671
 672         if(string == NULL)
 673                 return NULL;
 674
 675         while(*string)
 676         {
 677                 switch (*string)
 678                 {
 679                 case '"':
 680                         *str = '\'';
 681                         break;
 682                 case ':':
 683                         *str = ' ';
 684                         break;
 685                 default:
 686                         *str = *string;
 687                 }
 688                 string++;
 689                 str++;
 690
 691         }
 692         *str = '\0';
 693         return buf;
 694 }
 695
 696
 697 /**
 698  * change spaces to \s in gecos field
 699  */
 700 static const char *
 701 clean_gecos_field(const char *gecos)
 702 {
 703         static char buf[BUFSIZE * 2];
 704         char *str = buf;
 705
 706         if(gecos == NULL)
 707                 return NULL;
 708
 709         while(*gecos)
 710         {
 711                 if(*gecos == ' ')
 712                 {
 713                         *str++ = '\\';
 714                         *str++ = 's';
 715                 }
 716                 else
 717                         *str++ = *gecos;
 718                 gecos++;
 719         }
 720         *str = '\0';
 721         return buf;
 722 }
 723
 724 /**
 725  * verify the database integrity, and if necessary create apropriate tables
 726  */
 727 static void
 728 check_schema(void)
 729 {
 730         int i, j;
 731         char type[8];           /* longest string is 'INTEGER\0' */
 732
 733         if(flag.verify || flag.verbose)
 734                 fprintf(stdout, "* Verifying database.\n");
 735
 736         const char *columns[] = {
 737                 "perm",
 738                 "mask1",
 739                 "mask2",
 740                 "oper",
 741                 "time",
 742                 "reason",
 743                 NULL
 744         };
 745
 746         for(i = 0; i < LAST_BANDB_TYPE; i += 2 /* skip over _PERM */)
 747         {
 748                 if(!table_exists(bandb_table[i]))
 749                 {
 750                         rsdb_exec(NULL,
 751                                   "CREATE TABLE %s (mask1 TEXT, mask2 TEXT, oper TEXT, time INTEGER, perm INTEGER, reason TEXT)",
 752                                   bandb_table[i]);
 753                 }
 754
 755                 /*
 756                  * i can't think of any better way to do this, other then attempt to
 757                  * force the creation of column that may, or may not already exist. --dubkat
 758                  */
 759                 else
 760                 {
 761                         for(j = 0; columns[j] != NULL; j++)
 762                         {
 763                                 if(!strcmp(columns[j], "time") && !strcmp(columns[j], "perm"))
 764                                         rb_strlcpy(type, "INTEGER", sizeof(type));
 765                                 else
 766                                         rb_strlcpy(type, "TEXT", sizeof(type));
 767
 768                                 /* attempt to add a column with extreme prejudice, errors are ignored */
 769                                 rsdb_exec(NULL, "ALTER TABLE %s ADD COLUMN %s %s", bandb_table[i],
 770                                           columns[j], type);
 771                         }
 772                 }
 773         }
 774 }
 775
 776 static void
 777 db_reclaim_slack(void)
 778 {
 779         fprintf(stdout, "* Reclaiming free space.\n");
 780         rsdb_exec(NULL, "VACUUM");
 781 }
 782
 783
 784 /**
 785  * check that appropriate tables exist.
 786  */
 787 static int
 788 table_exists(const char *dbtab)
 789 {
 790         struct rsdb_table table;
 791         rsdb_exec_fetch(&table, "SELECT name FROM sqlite_master WHERE type='table' AND name='%s'",
 792                         dbtab);
 793         rsdb_exec_fetch_end(&table);
 794         return table.row_count;
 795 }
 796
 797 /**
 798  * check that there are actual entries in a table
 799  */
 800 static int
 801 table_has_rows(const char *dbtab)
 802 {
 803         struct rsdb_table table;
 804         rsdb_exec_fetch(&table, "SELECT * FROM %s", dbtab);
 805         rsdb_exec_fetch_end(&table);
 806         return table.row_count;
 807 }
 808
 809 /**
 810  * completely wipes out an existing ban.db of all entries.
 811  */
 812 static void
 813 wipe_schema(void)
 814 {
 815         int i;
 816         rsdb_transaction(RSDB_TRANS_START);
 817         for(i = 0; i < LAST_BANDB_TYPE; i += 2 /* double increment to skip over _PERM */)
 818         {
 819                 rsdb_exec(NULL, "DROP TABLE %s", bandb_table[i]);
 820         }
 821         rsdb_transaction(RSDB_TRANS_END);
 822
 823         check_schema();
 824 }
 825
 826 /**
 827  * remove pre-existing duplicate bans from the database.
 828  * we favor the new, imported ban over the one in the database
 829  */
 830 void
 831 drop_dupes(const char *user, const char *host, const char *t)
 832 {
 833         rsdb_exec(NULL, "DELETE FROM %s WHERE mask1='%Q' AND mask2='%Q'", t, user, host);
 834 }
 835
 836 static void
 837 db_error_cb(const char *errstr)
 838 {
 839         return;
 840 }
 841
 842
 843 /**
 844  * convert unix timestamp to human readable (small) date
 845  */
 846 static char *
 847 bt_smalldate(const char *string)
 848 {
 849         static char buf[MAX_DATE_STRING];
 850         struct tm *lt;
 851         time_t t;
 852         t = strtol(string, NULL, 10);
 853         lt = gmtime(&t);
 854         if(lt == NULL)
 855                 return NULL;
 856         snprintf(buf, sizeof(buf), "%d/%d/%d %02d.%02d",
 857                     lt->tm_year + 1900, lt->tm_mon + 1, lt->tm_mday, lt->tm_hour, lt->tm_min);
 858         return buf;
 859 }
 860
 861 /**
 862  * you are here ->.
 863  */
 864 void
 865 print_help(int i_exit)
 866 {
 867         fprintf(stderr, "bantool v.%s - the solanum database tool.\n", BT_VERSION);
 868         fprintf(stderr, "Copyright (C) 2008 Daniel J Reidy <dubkat@gmail.com>\n");
 869         fprintf(stderr, "This program is distributed in the hope that it will be useful,\n"
 870                 "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
 871                 "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n"
 872                 "GNU General Public License for more details.\n\n");
 873
 874         fprintf(stderr, "Usage: %s <-i|-e> [-p] [-v] [-h] [-d] [-w] [path]\n", me);
 875         fprintf(stderr, "       -h : Display some slightly useful help.\n");
 876         fprintf(stderr, "       -i : Actually import configs into your database.\n");
 877         fprintf(stderr, "       -e : Export your database to old-style flat files.\n");
 878         fprintf(stderr,
 879                 "            This is suitable for redistrubuting your banlists, or creating backups.\n");
 880         fprintf(stderr, "       -s : Reclaim empty slack space the database may be taking up.\n");
 881         fprintf(stderr, "       -u : Update the database tables to support any new features.\n");
 882         fprintf(stderr,
 883                 "            This is automatically done if you are importing or exporting\n");
 884         fprintf(stderr, "            but should be run whenever you upgrade the ircd.\n");
 885         fprintf(stderr,
 886                 "       -p : pretend, checks for the configs, and parses them, then tells you some data...\n");
 887         fprintf(stderr, "            but does not touch your database.\n");
 888         fprintf(stderr,
 889                 "       -v : Be verbose... and it *is* very verbose! (intended for debugging)\n");
 890         fprintf(stderr, "       -d : Enable checking for redundant entries.\n");
 891         fprintf(stderr, "       -w : Completely wipe your database clean. May be used with -i \n");
 892         fprintf(stderr,
 893                 "     path : An optional directory containing old ratbox configs for import, or export.\n");
 894         fprintf(stderr, "            If not specified, it looks in PREFIX/etc.\n");
 895         exit(i_exit);
 896 }