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