src/server/server.c

   1 /*
   2  * OpenDispense 2
   3  * UCC (University [of WA] Computer Club) Electronic Accounting System
   4  *
   5  * server.c - Client Server Code
   6  *
   7  * This file is licenced under the 3-clause BSD Licence. See the file
   8  * COPYING for full details.
   9  */
  10 #include <stdio.h>
  11 #include <stdlib.h>
  12 #include "common.h"
  13 #include <sys/socket.h>
  14 #include <netinet/in.h>
  15 #include <arpa/inet.h>
  16 #include <unistd.h>
  17 #include <fcntl.h>      // O_*
  18 #include <string.h>
  19 #include <limits.h>
  20 #include <stdarg.h>
  21 #include <signal.h>
  22
  23 #define DEBUG_TRACE_CLIENT      0
  24 #define HACK_NO_REFUNDS 1
  25
  26 // Statistics
  27 #define MAX_CONNECTION_QUEUE    5
  28 #define INPUT_BUFFER_SIZE       256
  29 #define CLIENT_TIMEOUT  10      // Seconds
  30
  31 #define HASH_TYPE       SHA1
  32 #define HASH_LENGTH     20
  33
  34 #define MSG_STR_TOO_LONG        "499 Command too long (limit "EXPSTR(INPUT_BUFFER_SIZE)")\n"
  35
  36 // === TYPES ===
  37 typedef struct sClient
  38 {
  39          int    Socket; // Client socket ID
  40          int    ID;     // Client ID
  41
  42          int    bIsTrusted;     // Is the connection from a trusted host/port
  43
  44         char    *Username;
  45         char    Salt[9];
  46
  47          int    UID;
  48          int    EffectiveUID;
  49          int    bIsAuthed;
  50 }       tClient;
  51
  52 // === PROTOTYPES ===
  53 void    Server_Start(void);
  54 void    Server_Cleanup(void);
  55 void    Server_HandleClient(int Socket, int bTrusted);
  56 void    Server_ParseClientCommand(tClient *Client, char *CommandString);
  57 // --- Commands ---
  58 void    Server_Cmd_USER(tClient *Client, char *Args);
  59 void    Server_Cmd_PASS(tClient *Client, char *Args);
  60 void    Server_Cmd_AUTOAUTH(tClient *Client, char *Args);
  61 void    Server_Cmd_SETEUSER(tClient *Client, char *Args);
  62 void    Server_Cmd_ENUMITEMS(tClient *Client, char *Args);
  63 void    Server_Cmd_ITEMINFO(tClient *Client, char *Args);
  64 void    Server_Cmd_DISPENSE(tClient *Client, char *Args);
  65 void    Server_Cmd_REFUND(tClient *Client, char *Args);
  66 void    Server_Cmd_GIVE(tClient *Client, char *Args);
  67 void    Server_Cmd_DONATE(tClient *Client, char *Args);
  68 void    Server_Cmd_ADD(tClient *Client, char *Args);
  69 void    Server_Cmd_SET(tClient *Client, char *Args);
  70 void    Server_Cmd_ENUMUSERS(tClient *Client, char *Args);
  71 void    Server_Cmd_USERINFO(tClient *Client, char *Args);
  72 void    _SendUserInfo(tClient *Client, int UserID);
  73 void    Server_Cmd_USERADD(tClient *Client, char *Args);
  74 void    Server_Cmd_USERFLAGS(tClient *Client, char *Args);
  75 void    Server_Cmd_UPDATEITEM(tClient *Client, char *Args);
  76 // --- Helpers ---
  77 void    Debug(tClient *Client, const char *Format, ...);
  78  int    sendf(int Socket, const char *Format, ...);
  79  int    Server_int_ParseArgs(int bUseLongArg, char *ArgStr, ...);
  80  int    Server_int_ParseFlags(tClient *Client, const char *Str, int *Mask, int *Value);
  81
  82 // === CONSTANTS ===
  83 // - Commands
  84 const struct sClientCommand {
  85         const char      *Name;
  86         void    (*Function)(tClient *Client, char *Arguments);
  87 }       gaServer_Commands[] = {
  88         {"USER", Server_Cmd_USER},
  89         {"PASS", Server_Cmd_PASS},
  90         {"AUTOAUTH", Server_Cmd_AUTOAUTH},
  91         {"SETEUSER", Server_Cmd_SETEUSER},
  92         {"ENUM_ITEMS", Server_Cmd_ENUMITEMS},
  93         {"ITEM_INFO", Server_Cmd_ITEMINFO},
  94         {"DISPENSE", Server_Cmd_DISPENSE},
  95         {"REFUND", Server_Cmd_REFUND},
  96         {"GIVE", Server_Cmd_GIVE},
  97         {"DONATE", Server_Cmd_DONATE},
  98         {"ADD", Server_Cmd_ADD},
  99         {"SET", Server_Cmd_SET},
 100         {"ENUM_USERS", Server_Cmd_ENUMUSERS},
 101         {"USER_INFO", Server_Cmd_USERINFO},
 102         {"USER_ADD", Server_Cmd_USERADD},
 103         {"USER_FLAGS", Server_Cmd_USERFLAGS},
 104         {"UPDATE_ITEM", Server_Cmd_UPDATEITEM}
 105 };
 106 #define NUM_COMMANDS    ((int)(sizeof(gaServer_Commands)/sizeof(gaServer_Commands[0])))
 107
 108 // === GLOBALS ===
 109 // - Configuration
 110  int    giServer_Port = 11020;
 111  int    gbServer_RunInBackground = 0;
 112 char    *gsServer_LogFile = "/var/log/dispsrv.log";
 113 char    *gsServer_ErrorLog = "/var/log/dispsrv.err";
 114 // - State variables
 115  int    giServer_Socket;        // Server socket
 116  int    giServer_NextClientID = 1;      // Debug client ID
 117
 118
 119 // === CODE ===
 120 /**
 121  * \brief Open listenting socket and serve connections
 122  */
 123 void Server_Start(void)
 124 {
 125          int    client_socket;
 126         struct sockaddr_in      server_addr, client_addr;
 127
 128         atexit(Server_Cleanup);
 129         // Ignore SIGPIPE (stops crashes when the client exits early)
 130         signal(SIGPIPE, SIG_IGN);
 131
 132         // Create Server
 133         giServer_Socket = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);
 134         if( giServer_Socket < 0 ) {
 135                 fprintf(stderr, "ERROR: Unable to create server socket\n");
 136                 return ;
 137         }
 138
 139         // Make listen address
 140         memset(&server_addr, 0, sizeof(server_addr));
 141         server_addr.sin_family = AF_INET;       // Internet Socket
 142         server_addr.sin_addr.s_addr = htonl(INADDR_ANY);        // Listen on all interfaces
 143         server_addr.sin_port = htons(giServer_Port);    // Port
 144
 145         // Bind
 146         if( bind(giServer_Socket, (struct sockaddr *) &server_addr, sizeof(server_addr)) < 0 ) {
 147                 fprintf(stderr, "ERROR: Unable to bind to 0.0.0.0:%i\n", giServer_Port);
 148                 perror("Binding");
 149                 return ;
 150         }
 151
 152         // Fork into background
 153         if( gbServer_RunInBackground )
 154         {
 155                 int newin, newout, newerr;
 156                 int pid = fork();
 157                 if( pid == -1 ) {
 158                         fprintf(stderr, "ERROR: Unable to fork\n");
 159                         perror("fork background");
 160                         exit(-1);
 161                 }
 162                 if( pid != 0 ) {
 163                         // Parent, quit
 164                         exit(0);
 165                 }
 166                 // In child
 167                 // - Sort out stdin/stdout
 168                 newin  = open("/dev/null", O_RDONLY);
 169                 newout = open(gsServer_LogFile, O_CREAT|O_APPEND, 0644);
 170                 newerr = open(gsServer_ErrorLog, O_CREAT|O_APPEND, 0644);
 171                 dup2(newin, 0);
 172                 dup2(newout, 1);
 173                 dup2(newerr, 2);
 174         }
 175
 176         // Start the helper thread
 177         StartPeriodicThread();
 178
 179         // Listen
 180         if( listen(giServer_Socket, MAX_CONNECTION_QUEUE) < 0 ) {
 181                 fprintf(stderr, "ERROR: Unable to listen to socket\n");
 182                 perror("Listen");
 183                 return ;
 184         }
 185
 186         printf("Listening on 0.0.0.0:%i\n", giServer_Port);
 187
 188         // write pidfile
 189         {
 190                 FILE *fp = fopen("/var/run/dispsrv.pid", "w");
 191                 if( fp ) {
 192                         fprintf(fp, "%i", getpid());
 193                         fclose(fp);
 194                 }
 195         }
 196
 197         for(;;)
 198         {
 199                 uint    len = sizeof(client_addr);
 200                  int    bTrusted = 0;
 201
 202                 // Accept a connection
 203                 client_socket = accept(giServer_Socket, (struct sockaddr *) &client_addr, &len);
 204                 if(client_socket < 0) {
 205                         fprintf(stderr, "ERROR: Unable to accept client connection\n");
 206                         return ;
 207                 }
 208
 209                 // Set a timeout on the user conneciton
 210                 {
 211                         struct timeval tv;
 212                         tv.tv_sec = CLIENT_TIMEOUT;
 213                         tv.tv_usec = 0;
 214                         if( setsockopt(client_socket, SOL_SOCKET, SO_RCVTIMEO, &tv, sizeof(tv)) )
 215                         {
 216                                 perror("setsockopt");
 217                                 return ;
 218                         }
 219                 }
 220
 221                 // Debug: Print the connection string
 222                 if(giDebugLevel >= 2) {
 223                         char    ipstr[INET_ADDRSTRLEN];
 224                         inet_ntop(AF_INET, &client_addr.sin_addr, ipstr, INET_ADDRSTRLEN);
 225                         printf("Client connection from %s:%i\n",
 226                                 ipstr, ntohs(client_addr.sin_port));
 227                 }
 228
 229                 // Doesn't matter what, localhost is trusted
 230                 if( ntohl( client_addr.sin_addr.s_addr ) == 0x7F000001 )
 231                         bTrusted = 1;
 232
 233                 // Trusted Connections
 234                 if( ntohs(client_addr.sin_port) < 1024 )
 235                 {
 236                         // TODO: Make this runtime configurable
 237                         switch( ntohl( client_addr.sin_addr.s_addr ) )
 238                         {
 239                         case 0x7F000001:        // 127.0.0.1    localhost
 240                 //      case 0x825F0D00:        // 130.95.13.0
 241                         case 0x825F0D04:        // 130.95.13.4  merlo
 242                         case 0x825F0D05:        // 130.95.13.5  heathred (MR)
 243                         case 0x825F0D07:        // 130.95.13.7  motsugo
 244                         case 0x825F0D11:        // 130.95.13.17 mermaid
 245                         case 0x825F0D12:        // 130.95.13.18 mussel
 246                         case 0x825F0D17:        // 130.95.13.23 martello
 247                         case 0x825F0D2A:        // 130.95.13.42 meersau
 248                         case 0x825F0D42:        // 130.95.13.66 heathred (Clubroom)
 249                                 bTrusted = 1;
 250                                 break;
 251                         default:
 252                                 break;
 253                         }
 254                 }
 255
 256                 // TODO: Multithread this?
 257                 Server_HandleClient(client_socket, bTrusted);
 258
 259                 close(client_socket);
 260         }
 261 }
 262
 263 void Server_Cleanup(void)
 264 {
 265         printf("\nClose(%i)\n", giServer_Socket);
 266         close(giServer_Socket);
 267         unlink("/var/run/dispsrv.pid");
 268 }
 269
 270 /**
 271  * \brief Reads from a client socket and parses the command strings
 272  * \param Socket        Client socket number/handle
 273  * \param bTrusted      Is the client trusted?
 274  */
 275 void Server_HandleClient(int Socket, int bTrusted)
 276 {
 277         char    inbuf[INPUT_BUFFER_SIZE];
 278         char    *buf = inbuf;
 279          int    remspace = INPUT_BUFFER_SIZE-1;
 280          int    bytes = -1;
 281         tClient clientInfo;
 282
 283         memset(&clientInfo, 0, sizeof(clientInfo));
 284
 285         // Initialise Client info
 286         clientInfo.Socket = Socket;
 287         clientInfo.ID = giServer_NextClientID ++;
 288         clientInfo.bIsTrusted = bTrusted;
 289         clientInfo.EffectiveUID = -1;
 290
 291         // Read from client
 292         /*
 293          * Notes:
 294          * - The `buf` and `remspace` variables allow a line to span several
 295          *   calls to recv(), if a line is not completed in one recv() call
 296          *   it is saved to the beginning of `inbuf` and `buf` is updated to
 297          *   the end of it.
 298          */
 299         // TODO: Use select() instead (to give a timeout)
 300         while( (bytes = recv(Socket, buf, remspace, 0)) > 0 )
 301         {
 302                 char    *eol, *start;
 303                 buf[bytes] = '\0';      // Allow us to use stdlib string functions on it
 304
 305                 // Split by lines
 306                 start = inbuf;
 307                 while( (eol = strchr(start, '\n')) )
 308                 {
 309                         *eol = '\0';
 310
 311                         Server_ParseClientCommand(&clientInfo, start);
 312
 313                         start = eol + 1;
 314                 }
 315
 316                 // Check if there was an incomplete line
 317                 if( *start != '\0' ) {
 318                          int    tailBytes = bytes - (start-buf);
 319                         // Roll back in buffer
 320                         memcpy(inbuf, start, tailBytes);
 321                         remspace -= tailBytes;
 322                         if(remspace == 0) {
 323                                 send(Socket, MSG_STR_TOO_LONG, sizeof(MSG_STR_TOO_LONG), 0);
 324                                 buf = inbuf;
 325                                 remspace = INPUT_BUFFER_SIZE - 1;
 326                         }
 327                 }
 328                 else {
 329                         buf = inbuf;
 330                         remspace = INPUT_BUFFER_SIZE - 1;
 331                 }
 332         }
 333
 334         // Check for errors
 335         if( bytes < 0 ) {
 336                 fprintf(stderr, "ERROR: Unable to recieve from client on socket %i\n", Socket);
 337                 return ;
 338         }
 339
 340         if(giDebugLevel >= 2) {
 341                 printf("Client %i: Disconnected\n", clientInfo.ID);
 342         }
 343 }
 344
 345 /**
 346  * \brief Parses a client command and calls the required helper function
 347  * \param Client        Pointer to client state structure
 348  * \param CommandString Command from client (single line of the command)
 349  * \return Heap String to return to the client
 350  */
 351 void Server_ParseClientCommand(tClient *Client, char *CommandString)
 352 {
 353         char    *command, *args;
 354          int    i;
 355
 356         if( giDebugLevel >= 2 )
 357                 Debug(Client, "Server_ParseClientCommand: (CommandString = '%s')", CommandString);
 358
 359         if( Server_int_ParseArgs(1, CommandString, &command, &args, NULL) )
 360         {
 361                 if( command == NULL )   return ;
 362                 // Is this an error? (just ignore for now)
 363         }
 364
 365
 366         // Find command
 367         for( i = 0; i < NUM_COMMANDS; i++ )
 368         {
 369                 if(strcmp(command, gaServer_Commands[i].Name) == 0) {
 370                         if( giDebugLevel >= 2 )
 371                                 Debug(Client, "CMD %s - \"%s\"", command, args);
 372                         gaServer_Commands[i].Function(Client, args);
 373                         return ;
 374                 }
 375         }
 376
 377         sendf(Client->Socket, "400 Unknown Command\n");
 378 }
 379
 380 // ---
 381 // Commands
 382 // ---
 383 /**
 384  * \brief Set client username
 385  *
 386  * Usage: USER <username>
 387  */
 388 void Server_Cmd_USER(tClient *Client, char *Args)
 389 {
 390         char    *username;
 391
 392         if( Server_int_ParseArgs(0, Args, &username, NULL) )
 393         {
 394                 sendf(Client->Socket, "407 USER takes 1 argument\n");
 395                 return ;
 396         }
 397
 398         // Debug!
 399         if( giDebugLevel )
 400                 Debug(Client, "Authenticating as '%s'", username);
 401
 402         // Save username
 403         if(Client->Username)
 404                 free(Client->Username);
 405         Client->Username = strdup(username);
 406
 407         #if USE_SALT
 408         // Create a salt (that changes if the username is changed)
 409         // Yes, I know, I'm a little paranoid, but who isn't?
 410         Client->Salt[0] = 0x21 + (rand()&0x3F);
 411         Client->Salt[1] = 0x21 + (rand()&0x3F);
 412         Client->Salt[2] = 0x21 + (rand()&0x3F);
 413         Client->Salt[3] = 0x21 + (rand()&0x3F);
 414         Client->Salt[4] = 0x21 + (rand()&0x3F);
 415         Client->Salt[5] = 0x21 + (rand()&0x3F);
 416         Client->Salt[6] = 0x21 + (rand()&0x3F);
 417         Client->Salt[7] = 0x21 + (rand()&0x3F);
 418
 419         // TODO: Also send hash type to use, (SHA1 or crypt according to [DAA])
 420         sendf(Client->Socket, "100 SALT %s\n", Client->Salt);
 421         #else
 422         sendf(Client->Socket, "100 User Set\n");
 423         #endif
 424 }
 425
 426 /**
 427  * \brief Authenticate as a user
 428  *
 429  * Usage: PASS <hash>
 430  */
 431 void Server_Cmd_PASS(tClient *Client, char *Args)
 432 {
 433         char    *passhash;
 434          int    flags;
 435
 436         if( Server_int_ParseArgs(0, Args, &passhash, NULL) )
 437         {
 438                 sendf(Client->Socket, "407 PASS takes 1 argument\n");
 439                 return ;
 440         }
 441
 442         // Pass on to cokebank
 443         Client->UID = Bank_GetUserAuth(Client->Salt, Client->Username, passhash);
 444
 445         if( Client->UID == -1 ) {
 446                 sendf(Client->Socket, "401 Auth Failure\n");
 447                 return ;
 448         }
 449
 450         flags = Bank_GetFlags(Client->UID);
 451         if( flags & USER_FLAG_DISABLED ) {
 452                 Client->UID = -1;
 453                 sendf(Client->Socket, "403 Account Disabled\n");
 454                 return ;
 455         }
 456         if( flags & USER_FLAG_INTERNAL ) {
 457                 Client->UID = -1;
 458                 sendf(Client->Socket, "403 Internal account\n");
 459                 return ;
 460         }
 461
 462         Client->bIsAuthed = 1;
 463         sendf(Client->Socket, "200 Auth OK\n");
 464 }
 465
 466 /**
 467  * \brief Authenticate as a user without a password
 468  *
 469  * Usage: AUTOAUTH <user>
 470  */
 471 void Server_Cmd_AUTOAUTH(tClient *Client, char *Args)
 472 {
 473         char    *username;
 474          int    userflags;
 475
 476         if( Server_int_ParseArgs(0, Args, &username, NULL) )
 477         {
 478                 sendf(Client->Socket, "407 AUTOAUTH takes 1 argument\n");
 479                 return ;
 480         }
 481
 482         // Check if trusted
 483         if( !Client->bIsTrusted ) {
 484                 if(giDebugLevel)
 485                         Debug(Client, "Untrusted client attempting to AUTOAUTH");
 486                 sendf(Client->Socket, "401 Untrusted\n");
 487                 return ;
 488         }
 489
 490         // Get UID
 491         Client->UID = Bank_GetAcctByName( username, 0 );
 492         if( Client->UID < 0 ) {
 493                 if(giDebugLevel)
 494                         Debug(Client, "Unknown user '%s'", username);
 495                 sendf(Client->Socket, "403 Auth Failure\n");
 496                 return ;
 497         }
 498
 499         userflags = Bank_GetFlags(Client->UID);
 500         // You can't be an internal account
 501         if( userflags & USER_FLAG_INTERNAL ) {
 502                 if(giDebugLevel)
 503                         Debug(Client, "Autoauth as '%s', not allowed", username);
 504                 Client->UID = -1;
 505                 sendf(Client->Socket, "403 Account is internal\n");
 506                 return ;
 507         }
 508
 509         // Disabled accounts
 510         if( userflags & USER_FLAG_DISABLED ) {
 511                 Client->UID = -1;
 512                 sendf(Client->Socket, "403 Account disabled\n");
 513                 return ;
 514         }
 515
 516         Client->bIsAuthed = 1;
 517
 518         if(giDebugLevel)
 519                 Debug(Client, "Auto authenticated as '%s' (%i)", username, Client->UID);
 520
 521         sendf(Client->Socket, "200 Auth OK\n");
 522 }
 523
 524 /**
 525  * \brief Set effective user
 526  */
 527 void Server_Cmd_SETEUSER(tClient *Client, char *Args)
 528 {
 529         char    *username;
 530          int    eUserFlags, userFlags;
 531
 532         if( Server_int_ParseArgs(0, Args, &username, NULL) )
 533         {
 534                 sendf(Client->Socket, "407 SETEUSER takes 1 argument\n");
 535                 return ;
 536         }
 537
 538         if( !strlen(Args) ) {
 539                 sendf(Client->Socket, "407 SETEUSER expects an argument\n");
 540                 return ;
 541         }
 542
 543         // Check authentication
 544         if( !Client->bIsAuthed ) {
 545                 sendf(Client->Socket, "401 Not Authenticated\n");
 546                 return ;
 547         }
 548
 549         // Check user permissions
 550         userFlags = Bank_GetFlags(Client->UID);
 551         if( !(userFlags & (USER_FLAG_COKE|USER_FLAG_ADMIN)) ) {
 552                 sendf(Client->Socket, "403 Not in coke\n");
 553                 return ;
 554         }
 555
 556         // Set id
 557         Client->EffectiveUID = Bank_GetAcctByName(username, 0);
 558         if( Client->EffectiveUID == -1 ) {
 559                 sendf(Client->Socket, "404 User not found\n");
 560                 return ;
 561         }
 562
 563         // You can't be an internal account
 564         if( !(userFlags & USER_FLAG_ADMIN) )
 565         {
 566                 eUserFlags = Bank_GetFlags(Client->EffectiveUID);
 567                 if( eUserFlags & USER_FLAG_INTERNAL ) {
 568                         Client->EffectiveUID = -1;
 569                         sendf(Client->Socket, "404 User not found\n");
 570                         return ;
 571                 }
 572                 // Disabled only avaliable to admins
 573                 if( eUserFlags & USER_FLAG_DISABLED ) {
 574                         Client->EffectiveUID = -1;
 575                         sendf(Client->Socket, "403 Account disabled\n");
 576                         return ;
 577                 }
 578         }
 579
 580         sendf(Client->Socket, "200 User set\n");
 581 }
 582
 583 /**
 584  * \brief Send an item status to the client
 585  * \param Client        Who to?
 586  * \param Item  Item to send
 587  */
 588 void Server_int_SendItem(tClient *Client, tItem *Item)
 589 {
 590         char    *status = "avail";
 591
 592         if( Item->Handler->CanDispense )
 593         {
 594                 switch(Item->Handler->CanDispense(Client->UID, Item->ID))
 595                 {
 596                 case  0:        status = "avail";       break;
 597                 case  1:        status = "sold";        break;
 598                 default:
 599                 case -1:        status = "error";       break;
 600                 }
 601         }
 602
 603         // KNOWN HACK: Naming a slot 'dead' disables it
 604         if( strcmp(Item->Name, "dead") == 0 )
 605                 status = "sold";        // Another status?
 606
 607         sendf(Client->Socket,
 608                 "202 Item %s:%i %s %i %s\n",
 609                 Item->Handler->Name, Item->ID, status, Item->Price, Item->Name
 610                 );
 611 }
 612
 613 /**
 614  * \brief Enumerate the items that the server knows about
 615  */
 616 void Server_Cmd_ENUMITEMS(tClient *Client, char *Args)
 617 {
 618          int    i, count;
 619
 620         if( Args != NULL && strlen(Args) ) {
 621                 sendf(Client->Socket, "407 ENUM_ITEMS takes no arguments\n");
 622                 return ;
 623         }
 624
 625         // Count shown items
 626         count = 0;
 627         for( i = 0; i < giNumItems; i ++ ) {
 628                 if( gaItems[i].bHidden )        continue;
 629                 count ++;
 630         }
 631
 632         sendf(Client->Socket, "201 Items %i\n", count);
 633
 634         for( i = 0; i < giNumItems; i ++ ) {
 635                 if( gaItems[i].bHidden )        continue;
 636                 Server_int_SendItem( Client, &gaItems[i] );
 637         }
 638
 639         sendf(Client->Socket, "200 List end\n");
 640 }
 641
 642 tItem *_GetItemFromString(char *String)
 643 {
 644         tHandler        *handler;
 645         char    *type = String;
 646         char    *colon = strchr(String, ':');
 647          int    num, i;
 648
 649         if( !colon ) {
 650                 return NULL;
 651         }
 652
 653         num = atoi(colon+1);
 654         *colon = '\0';
 655
 656         // Find handler
 657         handler = NULL;
 658         for( i = 0; i < giNumHandlers; i ++ )
 659         {
 660                 if( strcmp(gaHandlers[i]->Name, type) == 0) {
 661                         handler = gaHandlers[i];
 662                         break;
 663                 }
 664         }
 665         if( !handler ) {
 666                 return NULL;
 667         }
 668
 669         // Find item
 670         for( i = 0; i < giNumItems; i ++ )
 671         {
 672                 if( gaItems[i].Handler != handler )     continue;
 673                 if( gaItems[i].ID != num )      continue;
 674                 return &gaItems[i];
 675         }
 676         return NULL;
 677 }
 678
 679 /**
 680  * \brief Fetch information on a specific item
 681  */
 682 void Server_Cmd_ITEMINFO(tClient *Client, char *Args)
 683 {
 684         tItem   *item;
 685         char    *itemname;
 686
 687         if( Server_int_ParseArgs(0, Args, &itemname, NULL) ) {
 688                 sendf(Client->Socket, "407 ITEMINFO takes 1 argument\n");
 689                 return ;
 690         }
 691         item = _GetItemFromString(Args);
 692
 693         if( !item ) {
 694                 sendf(Client->Socket, "406 Bad Item ID\n");
 695                 return ;
 696         }
 697
 698         Server_int_SendItem( Client, item );
 699 }
 700
 701 void Server_Cmd_DISPENSE(tClient *Client, char *Args)
 702 {
 703         tItem   *item;
 704          int    ret;
 705          int    uid;
 706         char    *itemname;
 707
 708         if( Server_int_ParseArgs(0, Args, &itemname, NULL) ) {
 709                 sendf(Client->Socket, "407 DISPENSE takes only 1 argument\n");
 710                 return ;
 711         }
 712
 713         if( !Client->bIsAuthed ) {
 714                 sendf(Client->Socket, "401 Not Authenticated\n");
 715                 return ;
 716         }
 717
 718         item = _GetItemFromString(itemname);
 719         if( !item ) {
 720                 sendf(Client->Socket, "406 Bad Item ID\n");
 721                 return ;
 722         }
 723
 724         if( Client->EffectiveUID != -1 ) {
 725                 uid = Client->EffectiveUID;
 726         }
 727         else {
 728                 uid = Client->UID;
 729         }
 730
 731         switch( ret = DispenseItem( Client->UID, uid, item ) )
 732         {
 733         case 0: sendf(Client->Socket, "200 Dispense OK\n");     return ;
 734         case 1: sendf(Client->Socket, "501 Unable to dispense\n");      return ;
 735         case 2: sendf(Client->Socket, "402 Poor You\n");        return ;
 736         default:
 737                 sendf(Client->Socket, "500 Dispense Error (%i)\n", ret);
 738                 return ;
 739         }
 740 }
 741
 742 void Server_Cmd_REFUND(tClient *Client, char *Args)
 743 {
 744         tItem   *item;
 745          int    uid, price_override = 0;
 746         char    *username, *itemname, *price_str;
 747
 748         if( Server_int_ParseArgs(0, Args, &username, &itemname, &price_str, NULL) ) {
 749                 if( !itemname || price_str ) {
 750                         sendf(Client->Socket, "407 REFUND takes 2 or 3 arguments\n");
 751                         return ;
 752                 }
 753         }
 754
 755         if( !Client->bIsAuthed ) {
 756                 sendf(Client->Socket, "401 Not Authenticated\n");
 757                 return ;
 758         }
 759
 760         // Check user permissions
 761         if( !(Bank_GetFlags(Client->UID) & (USER_FLAG_COKE|USER_FLAG_ADMIN))  ) {
 762                 sendf(Client->Socket, "403 Not in coke\n");
 763                 return ;
 764         }
 765
 766         uid = Bank_GetAcctByName(username, 0);
 767         if( uid == -1 ) {
 768                 sendf(Client->Socket, "404 Unknown user\n");
 769                 return ;
 770         }
 771
 772         item = _GetItemFromString(itemname);
 773         if( !item ) {
 774                 sendf(Client->Socket, "406 Bad Item ID\n");
 775                 return ;
 776         }
 777
 778         if( price_str )
 779                 price_override = atoi(price_str);
 780
 781         switch( DispenseRefund( Client->UID, uid, item, price_override ) )
 782         {
 783         case 0: sendf(Client->Socket, "200 Item Refunded\n");   return ;
 784         default:
 785                 sendf(Client->Socket, "500 Dispense Error\n");
 786                 return;
 787         }
 788 }
 789
 790 void Server_Cmd_GIVE(tClient *Client, char *Args)
 791 {
 792         char    *recipient, *ammount, *reason;
 793          int    uid, iAmmount;
 794          int    thisUid;
 795
 796         // Parse arguments
 797         if( Server_int_ParseArgs(1, Args, &recipient, &ammount, &reason, NULL) ) {
 798                 sendf(Client->Socket, "407 GIVE takes only 3 arguments\n");
 799                 return ;
 800         }
 801
 802         // Check for authed
 803         if( !Client->bIsAuthed ) {
 804                 sendf(Client->Socket, "401 Not Authenticated\n");
 805                 return ;
 806         }
 807
 808         // Get recipient
 809         uid = Bank_GetAcctByName(recipient, 0);
 810         if( uid == -1 ) {
 811                 sendf(Client->Socket, "404 Invalid target user\n");
 812                 return ;
 813         }
 814
 815         // You can't alter an internal account
 816 //      if( Bank_GetFlags(uid) & USER_FLAG_INTERNAL ) {
 817 //              sendf(Client->Socket, "404 Invalid target user\n");
 818 //              return ;
 819 //      }
 820
 821         // Parse ammount
 822         iAmmount = atoi(ammount);
 823         if( iAmmount <= 0 ) {
 824                 sendf(Client->Socket, "407 Invalid Argument, ammount must be > zero\n");
 825                 return ;
 826         }
 827
 828         if( Client->EffectiveUID != -1 ) {
 829                 thisUid = Client->EffectiveUID;
 830         }
 831         else {
 832                 thisUid = Client->UID;
 833         }
 834
 835         // Do give
 836         switch( DispenseGive(Client->UID, thisUid, uid, iAmmount, reason) )
 837         {
 838         case 0:
 839                 sendf(Client->Socket, "200 Give OK\n");
 840                 return ;
 841         case 2:
 842                 sendf(Client->Socket, "402 Poor You\n");
 843                 return ;
 844         default:
 845                 sendf(Client->Socket, "500 Unknown error\n");
 846                 return ;
 847         }
 848 }
 849
 850 void Server_Cmd_DONATE(tClient *Client, char *Args)
 851 {
 852         char    *ammount, *reason;
 853          int    iAmmount;
 854          int    thisUid;
 855
 856         // Parse arguments
 857         if( Server_int_ParseArgs(1, Args, &ammount, &reason, NULL) ) {
 858                 sendf(Client->Socket, "407 DONATE takes 2 arguments\n");
 859                 return ;
 860         }
 861
 862         if( !Client->bIsAuthed ) {
 863                 sendf(Client->Socket, "401 Not Authenticated\n");
 864                 return ;
 865         }
 866
 867         // Parse ammount
 868         iAmmount = atoi(ammount);
 869         if( iAmmount <= 0 ) {
 870                 sendf(Client->Socket, "407 Invalid Argument, ammount must be > zero\n");
 871                 return ;
 872         }
 873
 874         // Handle effective users
 875         if( Client->EffectiveUID != -1 ) {
 876                 thisUid = Client->EffectiveUID;
 877         }
 878         else {
 879                 thisUid = Client->UID;
 880         }
 881
 882         // Do give
 883         switch( DispenseDonate(Client->UID, thisUid, iAmmount, reason) )
 884         {
 885         case 0:
 886                 sendf(Client->Socket, "200 Give OK\n");
 887                 return ;
 888         case 2:
 889                 sendf(Client->Socket, "402 Poor You\n");
 890                 return ;
 891         default:
 892                 sendf(Client->Socket, "500 Unknown error\n");
 893                 return ;
 894         }
 895 }
 896
 897 void Server_Cmd_ADD(tClient *Client, char *Args)
 898 {
 899         char    *user, *ammount, *reason;
 900          int    uid, iAmmount;
 901
 902         // Parse arguments
 903         if( Server_int_ParseArgs(1, Args, &user, &ammount, &reason, NULL) ) {
 904                 sendf(Client->Socket, "407 ADD takes 3 arguments\n");
 905                 return ;
 906         }
 907
 908         if( !Client->bIsAuthed ) {
 909                 sendf(Client->Socket, "401 Not Authenticated\n");
 910                 return ;
 911         }
 912
 913         // Check user permissions
 914         if( !(Bank_GetFlags(Client->UID) & (USER_FLAG_COKE|USER_FLAG_ADMIN))  ) {
 915                 sendf(Client->Socket, "403 Not in coke\n");
 916                 return ;
 917         }
 918
 919         #if HACK_NO_REFUNDS
 920         if( strstr(reason, "refund") != NULL || strstr(reason, "misdispense") != NULL )
 921         {
 922                 sendf(Client->Socket, "499 Don't use `dispense acct` for refunds, use `dispense refund` (and `dispense -G` to get item IDs)\n");
 923                 return ;
 924         }
 925         #endif
 926
 927         // Get recipient
 928         uid = Bank_GetAcctByName(user, 0);
 929         if( uid == -1 ) {
 930                 sendf(Client->Socket, "404 Invalid user\n");
 931                 return ;
 932         }
 933
 934         // You can't alter an internal account
 935         if( !(Bank_GetFlags(Client->UID) & USER_FLAG_ADMIN) )
 936         {
 937                 if( Bank_GetFlags(uid) & USER_FLAG_INTERNAL ) {
 938                         sendf(Client->Socket, "404 Invalid user\n");
 939                         return ;
 940                 }
 941                 // TODO: Maybe disallow changes to disabled?
 942         }
 943
 944         // Parse ammount
 945         iAmmount = atoi(ammount);
 946         if( iAmmount == 0 && ammount[0] != '0' ) {
 947                 sendf(Client->Socket, "407 Invalid Argument\n");
 948                 return ;
 949         }
 950
 951         // Do give
 952         switch( DispenseAdd(Client->UID, uid, iAmmount, reason) )
 953         {
 954         case 0:
 955                 sendf(Client->Socket, "200 Add OK\n");
 956                 return ;
 957         case 2:
 958                 sendf(Client->Socket, "402 Poor Guy\n");
 959                 return ;
 960         default:
 961                 sendf(Client->Socket, "500 Unknown error\n");
 962                 return ;
 963         }
 964 }
 965
 966 void Server_Cmd_SET(tClient *Client, char *Args)
 967 {
 968         char    *user, *ammount, *reason;
 969          int    uid, iAmmount;
 970
 971         // Parse arguments
 972         if( Server_int_ParseArgs(1, Args, &user, &ammount, &reason, NULL) ) {
 973                 sendf(Client->Socket, "407 SET takes 3 arguments\n");
 974                 return ;
 975         }
 976
 977         if( !Client->bIsAuthed ) {
 978                 sendf(Client->Socket, "401 Not Authenticated\n");
 979                 return ;
 980         }
 981
 982         // Check user permissions
 983         if( !(Bank_GetFlags(Client->UID) & USER_FLAG_ADMIN)  ) {
 984                 sendf(Client->Socket, "403 Not an admin\n");
 985                 return ;
 986         }
 987
 988         // Get recipient
 989         uid = Bank_GetAcctByName(user, 0);
 990         if( uid == -1 ) {
 991                 sendf(Client->Socket, "404 Invalid user\n");
 992                 return ;
 993         }
 994
 995         // Parse ammount
 996         iAmmount = atoi(ammount);
 997         if( iAmmount == 0 && ammount[0] != '0' ) {
 998                 sendf(Client->Socket, "407 Invalid Argument\n");
 999                 return ;
1000         }
1001
1002         // Do give
1003         switch( DispenseSet(Client->UID, uid, iAmmount, reason) )
1004         {
1005         case 0:
1006                 sendf(Client->Socket, "200 Add OK\n");
1007                 return ;
1008         case 2:
1009                 sendf(Client->Socket, "402 Poor Guy\n");
1010                 return ;
1011         default:
1012                 sendf(Client->Socket, "500 Unknown error\n");
1013                 return ;
1014         }
1015 }
1016
1017 void Server_Cmd_ENUMUSERS(tClient *Client, char *Args)
1018 {
1019          int    i, numRet = 0;
1020         tAcctIterator   *it;
1021          int    maxBal = INT_MAX, minBal = INT_MIN;
1022          int    flagMask = 0, flagVal = 0;
1023          int    sort = BANK_ITFLAG_SORT_NAME;
1024         time_t  lastSeenAfter=0, lastSeenBefore=0;
1025
1026          int    flags;  // Iterator flags
1027          int    balValue;       // Balance value for iterator
1028         time_t  timeValue;      // Time value for iterator
1029
1030         // Parse arguments
1031         if( Args && strlen(Args) )
1032         {
1033                 char    *space = Args, *type, *val;
1034                 do
1035                 {
1036                         type = space;
1037                         while(*type == ' ')     type ++;
1038                         // Get next space
1039                         space = strchr(space, ' ');
1040                         if(space)       *space = '\0';
1041
1042                         // Get type
1043                         val = strchr(type, ':');
1044                         if( val ) {
1045                                 *val = '\0';
1046                                 val ++;
1047
1048                                 // Types
1049                                 // - Minium Balance
1050                                 if( strcmp(type, "min_balance") == 0 ) {
1051                                         minBal = atoi(val);
1052                                 }
1053                                 // - Maximum Balance
1054                                 else if( strcmp(type, "max_balance") == 0 ) {
1055                                         maxBal = atoi(val);
1056                                 }
1057                                 // - Flags
1058                                 else if( strcmp(type, "flags") == 0 ) {
1059                                         if( Server_int_ParseFlags(Client, val, &flagMask, &flagVal) )
1060                                                 return ;
1061                                 }
1062                                 // - Last seen before timestamp
1063                                 else if( strcmp(type, "last_seen_before") == 0 ) {
1064                                         lastSeenAfter = atoll(val);
1065                                 }
1066                                 // - Last seen after timestamp
1067                                 else if( strcmp(type, "last_seen_after") == 0 ) {
1068                                         lastSeenAfter = atoll(val);
1069                                 }
1070                                 // - Sorting
1071                                 else if( strcmp(type, "sort") == 0 ) {
1072                                         char    *dash = strchr(val, '-');
1073                                         if( dash ) {
1074                                                 *dash = '\0';
1075                                                 dash ++;
1076                                         }
1077                                         if( strcmp(val, "name") == 0 ) {
1078                                                 sort = BANK_ITFLAG_SORT_NAME;
1079                                         }
1080                                         else if( strcmp(val, "balance") == 0 ) {
1081                                                 sort = BANK_ITFLAG_SORT_BAL;
1082                                         }
1083                                         else if( strcmp(val, "lastseen") == 0 ) {
1084                                                 sort = BANK_ITFLAG_SORT_LASTSEEN;
1085                                         }
1086                                         else {
1087                                                 sendf(Client->Socket, "407 Unknown sort field ('%s')\n", val);
1088                                                 return ;
1089                                         }
1090                                         // Handle sort direction
1091                                         if( dash ) {
1092                                                 if( strcmp(dash, "desc") == 0 ) {
1093                                                         sort |= BANK_ITFLAG_REVSORT;
1094                                                 }
1095                                                 else {
1096                                                         sendf(Client->Socket, "407 Unknown sort direction '%s'\n", dash);
1097                                                         return ;
1098                                                 }
1099                                                 dash[-1] = '-';
1100                                         }
1101                                 }
1102                                 else {
1103                                         sendf(Client->Socket, "407 Unknown argument to ENUM_USERS '%s:%s'\n", type, val);
1104                                         return ;
1105                                 }
1106
1107                                 val[-1] = ':';
1108                         }
1109                         else {
1110                                 sendf(Client->Socket, "407 Unknown argument to ENUM_USERS '%s'\n", type);
1111                                 return ;
1112                         }
1113
1114                         // Eat whitespace
1115                         if( space ) {
1116                                 *space = ' ';   // Repair (to be nice)
1117                                 space ++;
1118                                 while(*space == ' ')    space ++;
1119                         }
1120                 }       while(space);
1121         }
1122
1123         // Create iterator
1124         if( maxBal != INT_MAX ) {
1125                 flags = sort|BANK_ITFLAG_MAXBALANCE;
1126                 balValue = maxBal;
1127         }
1128         else if( minBal != INT_MIN ) {
1129                 flags = sort|BANK_ITFLAG_MINBALANCE;
1130                 balValue = minBal;
1131         }
1132         else {
1133                 flags = sort;
1134                 balValue = 0;
1135         }
1136         if( lastSeenBefore ) {
1137                 timeValue = lastSeenBefore;
1138                 flags |= BANK_ITFLAG_SEENBEFORE;
1139         }
1140         else if( lastSeenAfter ) {
1141                 timeValue = lastSeenAfter;
1142                 flags |= BANK_ITFLAG_SEENAFTER;
1143         }
1144         else {
1145                 timeValue = 0;
1146         }
1147         it = Bank_Iterator(flagMask, flagVal, flags, balValue, timeValue);
1148
1149         // Get return number
1150         while( (i = Bank_IteratorNext(it)) != -1 )
1151         {
1152                 int bal = Bank_GetBalance(i);
1153
1154                 if( bal == INT_MIN )    continue;
1155
1156                 if( bal < minBal )      continue;
1157                 if( bal > maxBal )      continue;
1158
1159                 numRet ++;
1160         }
1161
1162         Bank_DelIterator(it);
1163
1164         // Send count
1165         sendf(Client->Socket, "201 Users %i\n", numRet);
1166
1167
1168         // Create iterator
1169         it = Bank_Iterator(flagMask, flagVal, flags, balValue, timeValue);
1170
1171         while( (i = Bank_IteratorNext(it)) != -1 )
1172         {
1173                 int bal = Bank_GetBalance(i);
1174
1175                 if( bal == INT_MIN )    continue;
1176
1177                 if( bal < minBal )      continue;
1178                 if( bal > maxBal )      continue;
1179
1180                 _SendUserInfo(Client, i);
1181         }
1182
1183         Bank_DelIterator(it);
1184
1185         sendf(Client->Socket, "200 List End\n");
1186 }
1187
1188 void Server_Cmd_USERINFO(tClient *Client, char *Args)
1189 {
1190          int    uid;
1191         char    *user;
1192
1193         // Parse arguments
1194         if( Server_int_ParseArgs(0, Args, &user, NULL) ) {
1195                 sendf(Client->Socket, "407 USER_INFO takes 1 argument\n");
1196                 return ;
1197         }
1198
1199         if( giDebugLevel )      Debug(Client, "User Info '%s'", user);
1200
1201         // Get recipient
1202         uid = Bank_GetAcctByName(user, 0);
1203
1204         if( giDebugLevel >= 2 ) Debug(Client, "uid = %i", uid);
1205         if( uid == -1 ) {
1206                 sendf(Client->Socket, "404 Invalid user\n");
1207                 return ;
1208         }
1209
1210         _SendUserInfo(Client, uid);
1211 }
1212
1213 void _SendUserInfo(tClient *Client, int UserID)
1214 {
1215         char    *type, *disabled="", *door="";
1216          int    flags = Bank_GetFlags(UserID);
1217
1218         if( flags & USER_FLAG_INTERNAL ) {
1219                 type = "internal";
1220         }
1221         else if( flags & USER_FLAG_COKE ) {
1222                 if( flags & USER_FLAG_ADMIN )
1223                         type = "coke,admin";
1224                 else
1225                         type = "coke";
1226         }
1227         else if( flags & USER_FLAG_ADMIN ) {
1228                 type = "admin";
1229         }
1230         else {
1231                 type = "user";
1232         }
1233
1234         if( flags & USER_FLAG_DISABLED )
1235                 disabled = ",disabled";
1236         if( flags & USER_FLAG_DOORGROUP )
1237                 door = ",door";
1238
1239         // TODO: User flags/type
1240         sendf(
1241                 Client->Socket, "202 User %s %i %s%s%s\n",
1242                 Bank_GetAcctName(UserID), Bank_GetBalance(UserID),
1243                 type, disabled, door
1244                 );
1245 }
1246
1247 void Server_Cmd_USERADD(tClient *Client, char *Args)
1248 {
1249         char    *username;
1250
1251         // Parse arguments
1252         if( Server_int_ParseArgs(0, Args, &username, NULL) ) {
1253                 sendf(Client->Socket, "407 USER_ADD takes 1 argument\n");
1254                 return ;
1255         }
1256
1257         // Check authentication
1258         if( !Client->bIsAuthed ) {
1259                 sendf(Client->Socket, "401 Not Authenticated\n");
1260                 return ;
1261         }
1262
1263         // Check permissions
1264         if( !(Bank_GetFlags(Client->UID) & USER_FLAG_ADMIN) ) {
1265                 sendf(Client->Socket, "403 Not a coke admin\n");
1266                 return ;
1267         }
1268
1269         // Try to create user
1270         if( Bank_CreateAcct(username) == -1 ) {
1271                 sendf(Client->Socket, "404 User exists\n");
1272                 return ;
1273         }
1274
1275         {
1276                 char    *thisName = Bank_GetAcctName(Client->UID);
1277                 Log_Info("Account '%s' created by '%s'", username, thisName);
1278                 free(thisName);
1279         }
1280
1281         sendf(Client->Socket, "200 User Added\n");
1282 }
1283
1284 void Server_Cmd_USERFLAGS(tClient *Client, char *Args)
1285 {
1286         char    *username, *flags, *reason=NULL;
1287          int    mask=0, value=0;
1288          int    uid;
1289
1290         // Parse arguments
1291         if( Server_int_ParseArgs(1, Args, &username, &flags, &reason, NULL) ) {
1292                 if( !flags ) {
1293                         sendf(Client->Socket, "407 USER_FLAGS takes at least 2 arguments\n");
1294                         return ;
1295                 }
1296                 reason = "";
1297         }
1298
1299         // Check authentication
1300         if( !Client->bIsAuthed ) {
1301                 sendf(Client->Socket, "401 Not Authenticated\n");
1302                 return ;
1303         }
1304
1305         // Check permissions
1306         if( !(Bank_GetFlags(Client->UID) & USER_FLAG_ADMIN) ) {
1307                 sendf(Client->Socket, "403 Not a coke admin\n");
1308                 return ;
1309         }
1310
1311         // Get UID
1312         uid = Bank_GetAcctByName(username, 0);
1313         if( uid == -1 ) {
1314                 sendf(Client->Socket, "404 User '%s' not found\n", username);
1315                 return ;
1316         }
1317
1318         // Parse flags
1319         if( Server_int_ParseFlags(Client, flags, &mask, &value) )
1320                 return ;
1321
1322         if( giDebugLevel )
1323                 Debug(Client, "Set %i(%s) flags to %x (masked %x)\n",
1324                         uid, username, mask, value);
1325
1326         // Apply flags
1327         Bank_SetFlags(uid, mask, value);
1328
1329         // Log the change
1330         Log_Info("Updated '%s' with flag set '%s' - Reason: %s",
1331                 username, flags, reason);
1332
1333         // Return OK
1334         sendf(Client->Socket, "200 User Updated\n");
1335 }
1336
1337 void Server_Cmd_UPDATEITEM(tClient *Client, char *Args)
1338 {
1339         char    *itemname, *price_str, *description;
1340          int    price;
1341         tItem   *item;
1342
1343         if( Server_int_ParseArgs(1, Args, &itemname, &price_str, &description, NULL) ) {
1344                 sendf(Client->Socket, "407 UPDATE_ITEM takes 3 arguments\n");
1345                 return ;
1346         }
1347
1348         if( !Client->bIsAuthed ) {
1349                 sendf(Client->Socket, "401 Not Authenticated\n");
1350                 return ;
1351         }
1352
1353         // Check user permissions
1354         if( !(Bank_GetFlags(Client->UID) & (USER_FLAG_COKE|USER_FLAG_ADMIN))  ) {
1355                 sendf(Client->Socket, "403 Not in coke\n");
1356                 return ;
1357         }
1358
1359         item = _GetItemFromString(itemname);
1360         if( !item ) {
1361                 // TODO: Create item?
1362                 sendf(Client->Socket, "406 Bad Item ID\n");
1363                 return ;
1364         }
1365
1366         price = atoi(price_str);
1367         if( price <= 0 && price_str[0] != '0' ) {
1368                 sendf(Client->Socket, "407 Invalid price set\n");
1369         }
1370
1371         switch( DispenseUpdateItem( Client->UID, item, description, price ) )
1372         {
1373         case 0:
1374                 // Return OK
1375                 sendf(Client->Socket, "200 Item updated\n");
1376                 break;
1377         default:
1378                 break;
1379         }
1380 }
1381
1382 // --- INTERNAL HELPERS ---
1383 void Debug(tClient *Client, const char *Format, ...)
1384 {
1385         va_list args;
1386         //printf("%010i [%i] ", (int)time(NULL), Client->ID);
1387         printf("[%i] ", Client->ID);
1388         va_start(args, Format);
1389         vprintf(Format, args);
1390         va_end(args);
1391         printf("\n");
1392 }
1393
1394 int sendf(int Socket, const char *Format, ...)
1395 {
1396         va_list args;
1397          int    len;
1398
1399         va_start(args, Format);
1400         len = vsnprintf(NULL, 0, Format, args);
1401         va_end(args);
1402
1403         {
1404                 char    buf[len+1];
1405                 va_start(args, Format);
1406                 vsnprintf(buf, len+1, Format, args);
1407                 va_end(args);
1408
1409                 #if DEBUG_TRACE_CLIENT
1410                 printf("sendf: %s", buf);
1411                 #endif
1412
1413                 return send(Socket, buf, len, 0);
1414         }
1415 }
1416
1417 // Takes a series of char *'s in
1418 /**
1419  * \brief Parse space-separated entries into
1420  */
1421 int Server_int_ParseArgs(int bUseLongLast, char *ArgStr, ...)
1422 {
1423         va_list args;
1424         char    savedChar;
1425         char    **dest;
1426         va_start(args, ArgStr);
1427
1428         // Check for null
1429         if( !ArgStr )
1430         {
1431                 while( (dest = va_arg(args, char **)) )
1432                         *dest = NULL;
1433                 va_end(args);
1434                 return 1;
1435         }
1436
1437         savedChar = *ArgStr;
1438
1439         while( (dest = va_arg(args, char **)) )
1440         {
1441                 // Trim leading spaces
1442                 while( *ArgStr == ' ' || *ArgStr == '\t' )
1443                         ArgStr ++;
1444
1445                 // ... oops, not enough arguments
1446                 if( *ArgStr == '\0' )
1447                 {
1448                         // NULL unset arguments
1449                         do {
1450                                 *dest = NULL;
1451                         }       while( (dest = va_arg(args, char **)) );
1452                 va_end(args);
1453                         return -1;
1454                 }
1455
1456                 if( *ArgStr == '"' )
1457                 {
1458                         ArgStr ++;
1459                         *dest = ArgStr;
1460                         // Read until quote
1461                         while( *ArgStr && *ArgStr != '"' )
1462                                 ArgStr ++;
1463                 }
1464                 else
1465                 {
1466                         // Set destination
1467                         *dest = ArgStr;
1468                         // Read until a space
1469                         while( *ArgStr && *ArgStr != ' ' && *ArgStr != '\t' )
1470                                 ArgStr ++;
1471                 }
1472                 savedChar = *ArgStr;    // savedChar is used to un-mangle the last string
1473                 *ArgStr = '\0';
1474                 ArgStr ++;
1475         }
1476         va_end(args);
1477
1478         // Oops, extra arguments, and greedy not set
1479         if( (savedChar == ' ' || savedChar == '\t') && !bUseLongLast ) {
1480                 return -1;
1481         }
1482
1483         // Un-mangle last
1484         if(bUseLongLast) {
1485                 ArgStr --;
1486                 *ArgStr = savedChar;
1487         }
1488
1489         return 0;       // Success!
1490 }
1491
1492 int Server_int_ParseFlags(tClient *Client, const char *Str, int *Mask, int *Value)
1493 {
1494         struct {
1495                 const char      *Name;
1496                  int    Mask;
1497                  int    Value;
1498         }       cFLAGS[] = {
1499                  {"disabled", USER_FLAG_DISABLED, USER_FLAG_DISABLED}
1500                 ,{"door", USER_FLAG_DOORGROUP, USER_FLAG_DOORGROUP}
1501                 ,{"coke", USER_FLAG_COKE, USER_FLAG_COKE}
1502                 ,{"admin", USER_FLAG_ADMIN, USER_FLAG_ADMIN}
1503                 ,{"internal", USER_FLAG_INTERNAL, USER_FLAG_INTERNAL}
1504         };
1505         const int       ciNumFlags = sizeof(cFLAGS)/sizeof(cFLAGS[0]);
1506
1507         char    *space;
1508
1509         *Mask = 0;
1510         *Value = 0;
1511
1512         do {
1513                  int    bRemove = 0;
1514                  int    i;
1515                  int    len;
1516
1517                 while( *Str == ' ' )    Str ++; // Eat whitespace
1518                 space = strchr(Str, ',');       // Find the end of the flag
1519                 if(space)
1520                         len = space - Str;
1521                 else
1522                         len = strlen(Str);
1523
1524                 // Check for inversion/removal
1525                 if( *Str == '!' || *Str == '-' ) {
1526                         bRemove = 1;
1527                         Str ++;
1528                 }
1529                 else if( *Str == '+' ) {
1530                         Str ++;
1531                 }
1532
1533                 // Check flag values
1534                 for( i = 0; i < ciNumFlags; i ++ )
1535                 {
1536                         if( strncmp(Str, cFLAGS[i].Name, len) == 0 ) {
1537                                 *Mask |= cFLAGS[i].Mask;
1538                                 *Value &= ~cFLAGS[i].Mask;
1539                                 if( !bRemove )
1540                                         *Value |= cFLAGS[i].Value;
1541                                 break;
1542                         }
1543                 }
1544
1545                 // Error check
1546                 if( i == ciNumFlags ) {
1547                         char    val[len+1];
1548                         strncpy(val, Str, len+1);
1549                         sendf(Client->Socket, "407 Unknown flag value '%s'\n", val);
1550                         return -1;
1551                 }
1552
1553                 Str = space + 1;
1554         } while(space);
1555
1556         return 0;
1557 }