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