src/server/server.c

   1 /*
   2  * OpenDispense 2
   3  * UCC (University [of WA] Computer Club) Electronic Accounting System
   4  *
   5  * server.c - Client Server Code
   6  *
   7  * This file is licenced under the 3-clause BSD Licence. See the file
   8  * COPYING for full details.
   9  */
  10 #include <stdio.h>
  11 #include <stdlib.h>
  12 #include "common.h"
  13 #include <sys/socket.h>
  14 #include <netinet/in.h>
  15 #include <arpa/inet.h>
  16 #include <unistd.h>
  17 #include <fcntl.h>      // O_*
  18 #include <string.h>
  19 #include <limits.h>
  20 #include <stdarg.h>
  21 #include <signal.h>
  22 #include <ident.h>
  23
  24 #define DEBUG_TRACE_CLIENT      0
  25 #define HACK_NO_REFUNDS 1
  26
  27 // Statistics
  28 #define MAX_CONNECTION_QUEUE    5
  29 #define INPUT_BUFFER_SIZE       256
  30 #define CLIENT_TIMEOUT  10      // Seconds
  31
  32 #define HASH_TYPE       SHA1
  33 #define HASH_LENGTH     20
  34
  35 #define MSG_STR_TOO_LONG        "499 Command too long (limit "EXPSTR(INPUT_BUFFER_SIZE)")\n"
  36
  37 // === TYPES ===
  38 typedef struct sClient
  39 {
  40          int    Socket; // Client socket ID
  41          int    ID;     // Client ID
  42
  43          int    bIsTrusted;     // Is the connection from a trusted host/port
  44
  45         char    *Username;
  46         char    Salt[9];
  47
  48          int    UID;
  49          int    EffectiveUID;
  50          int    bIsAuthed;
  51 }       tClient;
  52
  53 // === PROTOTYPES ===
  54 void    Server_Start(void);
  55 void    Server_Cleanup(void);
  56 void    Server_HandleClient(int Socket, int bTrusted);
  57 void    Server_ParseClientCommand(tClient *Client, char *CommandString);
  58 // --- Commands ---
  59 void    Server_Cmd_USER(tClient *Client, char *Args);
  60 void    Server_Cmd_PASS(tClient *Client, char *Args);
  61 void    Server_Cmd_AUTOAUTH(tClient *Client, char *Args);
  62 void    Server_Cmd_AUTHIDENT(tClient *Client, char *Args);
  63 void    Server_Cmd_SETEUSER(tClient *Client, char *Args);
  64 void    Server_Cmd_ENUMITEMS(tClient *Client, char *Args);
  65 void    Server_Cmd_ITEMINFO(tClient *Client, char *Args);
  66 void    Server_Cmd_DISPENSE(tClient *Client, char *Args);
  67 void    Server_Cmd_REFUND(tClient *Client, char *Args);
  68 void    Server_Cmd_GIVE(tClient *Client, char *Args);
  69 void    Server_Cmd_DONATE(tClient *Client, char *Args);
  70 void    Server_Cmd_ADD(tClient *Client, char *Args);
  71 void    Server_Cmd_SET(tClient *Client, char *Args);
  72 void    Server_Cmd_ENUMUSERS(tClient *Client, char *Args);
  73 void    Server_Cmd_USERINFO(tClient *Client, char *Args);
  74 void    _SendUserInfo(tClient *Client, int UserID);
  75 void    Server_Cmd_USERADD(tClient *Client, char *Args);
  76 void    Server_Cmd_USERFLAGS(tClient *Client, char *Args);
  77 void    Server_Cmd_UPDATEITEM(tClient *Client, char *Args);
  78 // --- Helpers ---
  79 void    Debug(tClient *Client, const char *Format, ...);
  80  int    sendf(int Socket, const char *Format, ...);
  81  int    Server_int_ParseArgs(int bUseLongArg, char *ArgStr, ...);
  82  int    Server_int_ParseFlags(tClient *Client, const char *Str, int *Mask, int *Value);
  83
  84 // === CONSTANTS ===
  85 // - Commands
  86 const struct sClientCommand {
  87         const char      *Name;
  88         void    (*Function)(tClient *Client, char *Arguments);
  89 }       gaServer_Commands[] = {
  90         {"USER", Server_Cmd_USER},
  91         {"PASS", Server_Cmd_PASS},
  92         {"AUTOAUTH", Server_Cmd_AUTOAUTH},
  93         {"AUTHIDENT", Server_Cmd_AUTHIDENT},
  94         {"SETEUSER", Server_Cmd_SETEUSER},
  95         {"ENUM_ITEMS", Server_Cmd_ENUMITEMS},
  96         {"ITEM_INFO", Server_Cmd_ITEMINFO},
  97         {"DISPENSE", Server_Cmd_DISPENSE},
  98         {"REFUND", Server_Cmd_REFUND},
  99         {"GIVE", Server_Cmd_GIVE},
 100         {"DONATE", Server_Cmd_DONATE},
 101         {"ADD", Server_Cmd_ADD},
 102         {"SET", Server_Cmd_SET},
 103         {"ENUM_USERS", Server_Cmd_ENUMUSERS},
 104         {"USER_INFO", Server_Cmd_USERINFO},
 105         {"USER_ADD", Server_Cmd_USERADD},
 106         {"USER_FLAGS", Server_Cmd_USERFLAGS},
 107         {"UPDATE_ITEM", Server_Cmd_UPDATEITEM}
 108 };
 109 #define NUM_COMMANDS    ((int)(sizeof(gaServer_Commands)/sizeof(gaServer_Commands[0])))
 110
 111 // === GLOBALS ===
 112 // - Configuration
 113  int    giServer_Port = 11020;
 114  int    gbServer_RunInBackground = 0;
 115 char    *gsServer_LogFile = "/var/log/dispsrv.log";
 116 char    *gsServer_ErrorLog = "/var/log/dispsrv.err";
 117 // - State variables
 118  int    giServer_Socket;        // Server socket
 119  int    giServer_NextClientID = 1;      // Debug client ID
 120
 121
 122 // === CODE ===
 123 /**
 124  * \brief Open listenting socket and serve connections
 125  */
 126 void Server_Start(void)
 127 {
 128          int    client_socket;
 129         struct sockaddr_in      server_addr, client_addr;
 130
 131         atexit(Server_Cleanup);
 132         // Ignore SIGPIPE (stops crashes when the client exits early)
 133         signal(SIGPIPE, SIG_IGN);
 134
 135         // Create Server
 136         giServer_Socket = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);
 137         if( giServer_Socket < 0 ) {
 138                 fprintf(stderr, "ERROR: Unable to create server socket\n");
 139                 return ;
 140         }
 141
 142         // Make listen address
 143         memset(&server_addr, 0, sizeof(server_addr));
 144         server_addr.sin_family = AF_INET;       // Internet Socket
 145         server_addr.sin_addr.s_addr = htonl(INADDR_ANY);        // Listen on all interfaces
 146         server_addr.sin_port = htons(giServer_Port);    // Port
 147
 148         // Bind
 149         if( bind(giServer_Socket, (struct sockaddr *) &server_addr, sizeof(server_addr)) < 0 ) {
 150                 fprintf(stderr, "ERROR: Unable to bind to 0.0.0.0:%i\n", giServer_Port);
 151                 perror("Binding");
 152                 return ;
 153         }
 154
 155         // Fork into background
 156         if( gbServer_RunInBackground )
 157         {
 158                 int pid = fork();
 159                 if( pid == -1 ) {
 160                         fprintf(stderr, "ERROR: Unable to fork\n");
 161                         perror("fork background");
 162                         exit(-1);
 163                 }
 164                 if( pid != 0 ) {
 165                         // Parent, quit
 166                         exit(0);
 167                 }
 168                 // In child
 169                 // - Sort out stdin/stdout
 170                 #if 0
 171                 dup2( open("/dev/null", O_RDONLY, 0644), STDIN_FILENO );
 172                 dup2( open(gsServer_LogFile, O_CREAT|O_APPEND, 0644), STDOUT_FILENO );
 173                 dup2( open(gsServer_ErrorLog, O_CREAT|O_APPEND, 0644), STDERR_FILENO );
 174                 #else
 175                 freopen("/dev/null", "r", stdin);
 176                 freopen(gsServer_LogFile, "a", stdout);
 177                 freopen(gsServer_ErrorLog, "a", stderr);
 178                 #endif
 179         }
 180
 181         // Start the helper thread
 182         StartPeriodicThread();
 183
 184         // Listen
 185         if( listen(giServer_Socket, MAX_CONNECTION_QUEUE) < 0 ) {
 186                 fprintf(stderr, "ERROR: Unable to listen to socket\n");
 187                 perror("Listen");
 188                 return ;
 189         }
 190
 191         printf("Listening on 0.0.0.0:%i\n", giServer_Port);
 192
 193         // write pidfile
 194         {
 195                 FILE *fp = fopen("/var/run/dispsrv.pid", "w");
 196                 if( fp ) {
 197                         fprintf(fp, "%i", getpid());
 198                         fclose(fp);
 199                 }
 200         }
 201
 202         for(;;)
 203         {
 204                 uint    len = sizeof(client_addr);
 205                  int    bTrusted = 0;
 206
 207                 // Accept a connection
 208                 client_socket = accept(giServer_Socket, (struct sockaddr *) &client_addr, &len);
 209                 if(client_socket < 0) {
 210                         fprintf(stderr, "ERROR: Unable to accept client connection\n");
 211                         return ;
 212                 }
 213
 214                 // Set a timeout on the user conneciton
 215                 {
 216                         struct timeval tv;
 217                         tv.tv_sec = CLIENT_TIMEOUT;
 218                         tv.tv_usec = 0;
 219                         if( setsockopt(client_socket, SOL_SOCKET, SO_RCVTIMEO, &tv, sizeof(tv)) )
 220                         {
 221                                 perror("setsockopt");
 222                                 return ;
 223                         }
 224                 }
 225
 226                 // Debug: Print the connection string
 227                 if(giDebugLevel >= 2) {
 228                         char    ipstr[INET_ADDRSTRLEN];
 229                         inet_ntop(AF_INET, &client_addr.sin_addr, ipstr, INET_ADDRSTRLEN);
 230                         printf("Client connection from %s:%i\n",
 231                                 ipstr, ntohs(client_addr.sin_port));
 232                 }
 233
 234                 // Doesn't matter what, localhost is trusted
 235                 if( ntohl( client_addr.sin_addr.s_addr ) == 0x7F000001 )
 236                         bTrusted = 1;
 237
 238                 // Trusted Connections
 239                 if( ntohs(client_addr.sin_port) < 1024 )
 240                 {
 241                         // TODO: Make this runtime configurable
 242                         switch( ntohl( client_addr.sin_addr.s_addr ) )
 243                         {
 244                         case 0x7F000001:        // 127.0.0.1    localhost
 245                 //      case 0x825F0D00:        // 130.95.13.0
 246                         case 0x825F0D04:        // 130.95.13.4  merlo
 247                 //      case 0x825F0D05:        // 130.95.13.5  heathred (MR)
 248                         case 0x825F0D07:        // 130.95.13.7  motsugo
 249                         case 0x825F0D11:        // 130.95.13.17 mermaid
 250                         case 0x825F0D12:        // 130.95.13.18 mussel
 251                         case 0x825F0D17:        // 130.95.13.23 martello
 252                         case 0x825F0D2A:        // 130.95.13.42 meersau
 253                 //      case 0x825F0D42:        // 130.95.13.66 heathred (Clubroom)
 254                                 bTrusted = 1;
 255                                 break;
 256                         default:
 257                                 break;
 258                         }
 259                 }
 260
 261                 // TODO: Multithread this?
 262                 Server_HandleClient(client_socket, bTrusted);
 263
 264                 close(client_socket);
 265         }
 266 }
 267
 268 void Server_Cleanup(void)
 269 {
 270         printf("\nClose(%i)\n", giServer_Socket);
 271         close(giServer_Socket);
 272         unlink("/var/run/dispsrv.pid");
 273 }
 274
 275 /**
 276  * \brief Reads from a client socket and parses the command strings
 277  * \param Socket        Client socket number/handle
 278  * \param bTrusted      Is the client trusted?
 279  */
 280 void Server_HandleClient(int Socket, int bTrusted)
 281 {
 282         char    inbuf[INPUT_BUFFER_SIZE];
 283         char    *buf = inbuf;
 284          int    remspace = INPUT_BUFFER_SIZE-1;
 285          int    bytes = -1;
 286         tClient clientInfo;
 287
 288         memset(&clientInfo, 0, sizeof(clientInfo));
 289
 290         // Initialise Client info
 291         clientInfo.Socket = Socket;
 292         clientInfo.ID = giServer_NextClientID ++;
 293         clientInfo.bIsTrusted = bTrusted;
 294         clientInfo.EffectiveUID = -1;
 295
 296         // Read from client
 297         /*
 298          * Notes:
 299          * - The `buf` and `remspace` variables allow a line to span several
 300          *   calls to recv(), if a line is not completed in one recv() call
 301          *   it is saved to the beginning of `inbuf` and `buf` is updated to
 302          *   the end of it.
 303          */
 304         // TODO: Use select() instead (to give a timeout)
 305         while( (bytes = recv(Socket, buf, remspace, 0)) > 0 )
 306         {
 307                 char    *eol, *start;
 308                 buf[bytes] = '\0';      // Allow us to use stdlib string functions on it
 309
 310                 // Split by lines
 311                 start = inbuf;
 312                 while( (eol = strchr(start, '\n')) )
 313                 {
 314                         *eol = '\0';
 315
 316                         Server_ParseClientCommand(&clientInfo, start);
 317
 318                         start = eol + 1;
 319                 }
 320
 321                 // Check if there was an incomplete line
 322                 if( *start != '\0' ) {
 323                          int    tailBytes = bytes - (start-buf);
 324                         // Roll back in buffer
 325                         memcpy(inbuf, start, tailBytes);
 326                         remspace -= tailBytes;
 327                         if(remspace == 0) {
 328                                 send(Socket, MSG_STR_TOO_LONG, sizeof(MSG_STR_TOO_LONG), 0);
 329                                 buf = inbuf;
 330                                 remspace = INPUT_BUFFER_SIZE - 1;
 331                         }
 332                 }
 333                 else {
 334                         buf = inbuf;
 335                         remspace = INPUT_BUFFER_SIZE - 1;
 336                 }
 337         }
 338
 339         // Check for errors
 340         if( bytes < 0 ) {
 341                 fprintf(stderr, "ERROR: Unable to recieve from client on socket %i\n", Socket);
 342                 return ;
 343         }
 344
 345         if(giDebugLevel >= 2) {
 346                 printf("Client %i: Disconnected\n", clientInfo.ID);
 347         }
 348 }
 349
 350 /**
 351  * \brief Parses a client command and calls the required helper function
 352  * \param Client        Pointer to client state structure
 353  * \param CommandString Command from client (single line of the command)
 354  * \return Heap String to return to the client
 355  */
 356 void Server_ParseClientCommand(tClient *Client, char *CommandString)
 357 {
 358         char    *command, *args;
 359          int    i;
 360
 361         if( giDebugLevel >= 2 )
 362                 Debug(Client, "Server_ParseClientCommand: (CommandString = '%s')", CommandString);
 363
 364         if( Server_int_ParseArgs(1, CommandString, &command, &args, NULL) )
 365         {
 366                 if( command == NULL )   return ;
 367                 // Is this an error? (just ignore for now)
 368         }
 369
 370
 371         // Find command
 372         for( i = 0; i < NUM_COMMANDS; i++ )
 373         {
 374                 if(strcmp(command, gaServer_Commands[i].Name) == 0) {
 375                         if( giDebugLevel >= 2 )
 376                                 Debug(Client, "CMD %s - \"%s\"", command, args);
 377                         gaServer_Commands[i].Function(Client, args);
 378                         return ;
 379                 }
 380         }
 381
 382         sendf(Client->Socket, "400 Unknown Command\n");
 383 }
 384
 385 // ---
 386 // Commands
 387 // ---
 388 /**
 389  * \brief Set client username
 390  *
 391  * Usage: USER <username>
 392  */
 393 void Server_Cmd_USER(tClient *Client, char *Args)
 394 {
 395         char    *username;
 396
 397         if( Server_int_ParseArgs(0, Args, &username, NULL) )
 398         {
 399                 sendf(Client->Socket, "407 USER takes 1 argument\n");
 400                 return ;
 401         }
 402
 403         // Debug!
 404         if( giDebugLevel )
 405                 Debug(Client, "Authenticating as '%s'", username);
 406
 407         // Save username
 408         if(Client->Username)
 409                 free(Client->Username);
 410         Client->Username = strdup(username);
 411
 412         #if USE_SALT
 413         // Create a salt (that changes if the username is changed)
 414         // Yes, I know, I'm a little paranoid, but who isn't?
 415         Client->Salt[0] = 0x21 + (rand()&0x3F);
 416         Client->Salt[1] = 0x21 + (rand()&0x3F);
 417         Client->Salt[2] = 0x21 + (rand()&0x3F);
 418         Client->Salt[3] = 0x21 + (rand()&0x3F);
 419         Client->Salt[4] = 0x21 + (rand()&0x3F);
 420         Client->Salt[5] = 0x21 + (rand()&0x3F);
 421         Client->Salt[6] = 0x21 + (rand()&0x3F);
 422         Client->Salt[7] = 0x21 + (rand()&0x3F);
 423
 424         // TODO: Also send hash type to use, (SHA1 or crypt according to [DAA])
 425         sendf(Client->Socket, "100 SALT %s\n", Client->Salt);
 426         #else
 427         sendf(Client->Socket, "100 User Set\n");
 428         #endif
 429 }
 430
 431 /**
 432  * \brief Authenticate as a user
 433  *
 434  * Usage: PASS <hash>
 435  */
 436 void Server_Cmd_PASS(tClient *Client, char *Args)
 437 {
 438         char    *passhash;
 439          int    flags;
 440
 441         if( Server_int_ParseArgs(0, Args, &passhash, NULL) )
 442         {
 443                 sendf(Client->Socket, "407 PASS takes 1 argument\n");
 444                 return ;
 445         }
 446
 447         // Pass on to cokebank
 448         Client->UID = Bank_GetUserAuth(Client->Salt, Client->Username, passhash);
 449
 450         if( Client->UID == -1 ) {
 451                 sendf(Client->Socket, "401 Auth Failure\n");
 452                 return ;
 453         }
 454
 455         flags = Bank_GetFlags(Client->UID);
 456         if( flags & USER_FLAG_DISABLED ) {
 457                 Client->UID = -1;
 458                 sendf(Client->Socket, "403 Account Disabled\n");
 459                 return ;
 460         }
 461         if( flags & USER_FLAG_INTERNAL ) {
 462                 Client->UID = -1;
 463                 sendf(Client->Socket, "403 Internal account\n");
 464                 return ;
 465         }
 466
 467         Client->bIsAuthed = 1;
 468         sendf(Client->Socket, "200 Auth OK\n");
 469 }
 470
 471 /**
 472  * \brief Authenticate as a user without a password
 473  *
 474  * Usage: AUTOAUTH <user>
 475  */
 476 void Server_Cmd_AUTOAUTH(tClient *Client, char *Args)
 477 {
 478         char    *username;
 479          int    userflags;
 480
 481         if( Server_int_ParseArgs(0, Args, &username, NULL) )
 482         {
 483                 sendf(Client->Socket, "407 AUTOAUTH takes 1 argument\n");
 484                 return ;
 485         }
 486
 487         // Check if trusted
 488         if( !Client->bIsTrusted ) {
 489                 if(giDebugLevel)
 490                         Debug(Client, "Untrusted client attempting to AUTOAUTH");
 491                 sendf(Client->Socket, "401 Untrusted\n");
 492                 return ;
 493         }
 494
 495         // Get UID
 496         Client->UID = Bank_GetAcctByName( username, 0 );
 497         if( Client->UID < 0 ) {
 498                 if(giDebugLevel)
 499                         Debug(Client, "Unknown user '%s'", username);
 500                 sendf(Client->Socket, "403 Auth Failure\n");
 501                 return ;
 502         }
 503
 504         userflags = Bank_GetFlags(Client->UID);
 505         // You can't be an internal account
 506         if( userflags & USER_FLAG_INTERNAL ) {
 507                 if(giDebugLevel)
 508                         Debug(Client, "Autoauth as '%s', not allowed", username);
 509                 Client->UID = -1;
 510                 sendf(Client->Socket, "403 Account is internal\n");
 511                 return ;
 512         }
 513
 514         // Disabled accounts
 515         if( userflags & USER_FLAG_DISABLED ) {
 516                 Client->UID = -1;
 517                 sendf(Client->Socket, "403 Account disabled\n");
 518                 return ;
 519         }
 520
 521         // Save username
 522         if(Client->Username)
 523                 free(Client->Username);
 524         Client->Username = strdup(username);
 525
 526         Client->bIsAuthed = 1;
 527
 528         if(giDebugLevel)
 529                 Debug(Client, "Auto authenticated as '%s' (%i)", username, Client->UID);
 530
 531         sendf(Client->Socket, "200 Auth OK\n");
 532 }
 533
 534 /**
 535  * \brief Authenticate as a user using the IDENT protocol
 536  *
 537  * Usage: AUTHIDENT
 538  */
 539 void Server_Cmd_AUTHIDENT(tClient *Client, char *Args)
 540 {
 541         char    *username;
 542          int    userflags;
 543         const int ident_timeout = 5;
 544
 545         if( Args != NULL && strlen(Args) ) {
 546                 sendf(Client->Socket, "407 AUTHIDENT takes no arguments\n");
 547                 return ;
 548         }
 549
 550         // Check if trusted
 551         if( !Client->bIsTrusted ) {
 552                 if(giDebugLevel)
 553                         Debug(Client, "Untrusted client attempting to AUTHIDENT");
 554                 sendf(Client->Socket, "401 Untrusted\n");
 555                 return ;
 556         }
 557
 558         // Get username via IDENT
 559         username = ident_id(Client->Socket, ident_timeout);
 560         if (!username) {
 561                 sendf(Client->Socket, "403 Authentication failure: IDENT auth timed out\n");
 562         }
 563
 564         // Get UID
 565         Client->UID = Bank_GetAcctByName( username, 0 );
 566         if( Client->UID < 0 ) {
 567                 if(giDebugLevel)
 568                         Debug(Client, "Unknown user '%s'", username);
 569                 sendf(Client->Socket, "403 Authentication failure: unknown account\n");
 570                 free(username);
 571                 return ;
 572         }
 573
 574         userflags = Bank_GetFlags(Client->UID);
 575         // You can't be an internal account
 576         if( userflags & USER_FLAG_INTERNAL ) {
 577                 if(giDebugLevel)
 578                         Debug(Client, "IDENT auth as '%s', not allowed", username);
 579                 Client->UID = -1;
 580                 sendf(Client->Socket, "403 Authentication failure: that account is internal\n");
 581                 free(username);
 582                 return ;
 583         }
 584
 585         // Disabled accounts
 586         if( userflags & USER_FLAG_DISABLED ) {
 587                 Client->UID = -1;
 588                 sendf(Client->Socket, "403 Authentication failure: account disabled\n");
 589                 free(username);
 590                 return ;
 591         }
 592
 593         // Save username
 594         if(Client->Username)
 595                 free(Client->Username);
 596         Client->Username = strdup(username);
 597
 598         Client->bIsAuthed = 1;
 599
 600         if(giDebugLevel)
 601                 Debug(Client, "IDENT authenticated as '%s' (%i)", username, Client->UID);
 602         free(username);
 603
 604         sendf(Client->Socket, "200 Auth OK\n");
 605 }
 606
 607 /**
 608  * \brief Set effective user
 609  */
 610 void Server_Cmd_SETEUSER(tClient *Client, char *Args)
 611 {
 612         char    *username;
 613          int    eUserFlags, userFlags;
 614
 615         if( Server_int_ParseArgs(0, Args, &username, NULL) )
 616         {
 617                 sendf(Client->Socket, "407 SETEUSER takes 1 argument\n");
 618                 return ;
 619         }
 620
 621         if( !strlen(Args) ) {
 622                 sendf(Client->Socket, "407 SETEUSER expects an argument\n");
 623                 return ;
 624         }
 625
 626         // Check authentication
 627         if( !Client->bIsAuthed ) {
 628                 sendf(Client->Socket, "401 Not Authenticated\n");
 629                 return ;
 630         }
 631
 632         // Check user permissions
 633         userFlags = Bank_GetFlags(Client->UID);
 634         if( !(userFlags & (USER_FLAG_COKE|USER_FLAG_ADMIN)) ) {
 635                 sendf(Client->Socket, "403 Not in coke\n");
 636                 return ;
 637         }
 638
 639         // Set id
 640         Client->EffectiveUID = Bank_GetAcctByName(username, 0);
 641         if( Client->EffectiveUID == -1 ) {
 642                 sendf(Client->Socket, "404 User not found\n");
 643                 return ;
 644         }
 645
 646         // You can't be an internal account
 647         if( !(userFlags & USER_FLAG_ADMIN) )
 648         {
 649                 eUserFlags = Bank_GetFlags(Client->EffectiveUID);
 650                 if( eUserFlags & USER_FLAG_INTERNAL ) {
 651                         Client->EffectiveUID = -1;
 652                         sendf(Client->Socket, "404 User not found\n");
 653                         return ;
 654                 }
 655                 // Disabled only avaliable to admins
 656                 if( eUserFlags & USER_FLAG_DISABLED ) {
 657                         Client->EffectiveUID = -1;
 658                         sendf(Client->Socket, "403 Account disabled\n");
 659                         return ;
 660                 }
 661         }
 662
 663         sendf(Client->Socket, "200 User set\n");
 664 }
 665
 666 /**
 667  * \brief Send an item status to the client
 668  * \param Client        Who to?
 669  * \param Item  Item to send
 670  */
 671 void Server_int_SendItem(tClient *Client, tItem *Item)
 672 {
 673         char    *status = "avail";
 674
 675         if( Item->Handler->CanDispense )
 676         {
 677                 switch(Item->Handler->CanDispense(Client->UID, Item->ID))
 678                 {
 679                 case  0:        status = "avail";       break;
 680                 case  1:        status = "sold";        break;
 681                 default:
 682                 case -1:        status = "error";       break;
 683                 }
 684         }
 685
 686         // KNOWN HACK: Naming a slot 'dead' disables it
 687         if( strcmp(Item->Name, "dead") == 0 )
 688                 status = "sold";        // Another status?
 689
 690         sendf(Client->Socket,
 691                 "202 Item %s:%i %s %i %s\n",
 692                 Item->Handler->Name, Item->ID, status, Item->Price, Item->Name
 693                 );
 694 }
 695
 696 /**
 697  * \brief Enumerate the items that the server knows about
 698  */
 699 void Server_Cmd_ENUMITEMS(tClient *Client, char *Args)
 700 {
 701          int    i, count;
 702
 703         if( Args != NULL && strlen(Args) ) {
 704                 sendf(Client->Socket, "407 ENUM_ITEMS takes no arguments\n");
 705                 return ;
 706         }
 707
 708         // Count shown items
 709         count = 0;
 710         for( i = 0; i < giNumItems; i ++ ) {
 711                 if( gaItems[i].bHidden )        continue;
 712                 count ++;
 713         }
 714
 715         sendf(Client->Socket, "201 Items %i\n", count);
 716
 717         for( i = 0; i < giNumItems; i ++ ) {
 718                 if( gaItems[i].bHidden )        continue;
 719                 Server_int_SendItem( Client, &gaItems[i] );
 720         }
 721
 722         sendf(Client->Socket, "200 List end\n");
 723 }
 724
 725 tItem *_GetItemFromString(char *String)
 726 {
 727         tHandler        *handler;
 728         char    *type = String;
 729         char    *colon = strchr(String, ':');
 730          int    num, i;
 731
 732         if( !colon ) {
 733                 return NULL;
 734         }
 735
 736         num = atoi(colon+1);
 737         *colon = '\0';
 738
 739         // Find handler
 740         handler = NULL;
 741         for( i = 0; i < giNumHandlers; i ++ )
 742         {
 743                 if( strcmp(gaHandlers[i]->Name, type) == 0) {
 744                         handler = gaHandlers[i];
 745                         break;
 746                 }
 747         }
 748         if( !handler ) {
 749                 return NULL;
 750         }
 751
 752         // Find item
 753         for( i = 0; i < giNumItems; i ++ )
 754         {
 755                 if( gaItems[i].Handler != handler )     continue;
 756                 if( gaItems[i].ID != num )      continue;
 757                 return &gaItems[i];
 758         }
 759         return NULL;
 760 }
 761
 762 /**
 763  * \brief Fetch information on a specific item
 764  */
 765 void Server_Cmd_ITEMINFO(tClient *Client, char *Args)
 766 {
 767         tItem   *item;
 768         char    *itemname;
 769
 770         if( Server_int_ParseArgs(0, Args, &itemname, NULL) ) {
 771                 sendf(Client->Socket, "407 ITEMINFO takes 1 argument\n");
 772                 return ;
 773         }
 774         item = _GetItemFromString(Args);
 775
 776         if( !item ) {
 777                 sendf(Client->Socket, "406 Bad Item ID\n");
 778                 return ;
 779         }
 780
 781         Server_int_SendItem( Client, item );
 782 }
 783
 784 void Server_Cmd_DISPENSE(tClient *Client, char *Args)
 785 {
 786         tItem   *item;
 787          int    ret;
 788          int    uid;
 789         char    *itemname;
 790
 791         if( Server_int_ParseArgs(0, Args, &itemname, NULL) ) {
 792                 sendf(Client->Socket, "407 DISPENSE takes only 1 argument\n");
 793                 return ;
 794         }
 795
 796         if( !Client->bIsAuthed ) {
 797                 sendf(Client->Socket, "401 Not Authenticated\n");
 798                 return ;
 799         }
 800
 801         item = _GetItemFromString(itemname);
 802         if( !item ) {
 803                 sendf(Client->Socket, "406 Bad Item ID\n");
 804                 return ;
 805         }
 806
 807         if( Client->EffectiveUID != -1 ) {
 808                 uid = Client->EffectiveUID;
 809         }
 810         else {
 811                 uid = Client->UID;
 812         }
 813
 814         switch( ret = DispenseItem( Client->UID, uid, item ) )
 815         {
 816         case 0: sendf(Client->Socket, "200 Dispense OK\n");     return ;
 817         case 1: sendf(Client->Socket, "501 Unable to dispense\n");      return ;
 818         case 2: sendf(Client->Socket, "402 Poor You\n");        return ;
 819         default:
 820                 sendf(Client->Socket, "500 Dispense Error (%i)\n", ret);
 821                 return ;
 822         }
 823 }
 824
 825 void Server_Cmd_REFUND(tClient *Client, char *Args)
 826 {
 827         tItem   *item;
 828          int    uid, price_override = 0;
 829         char    *username, *itemname, *price_str;
 830
 831         if( Server_int_ParseArgs(0, Args, &username, &itemname, &price_str, NULL) ) {
 832                 if( !itemname || price_str ) {
 833                         sendf(Client->Socket, "407 REFUND takes 2 or 3 arguments\n");
 834                         return ;
 835                 }
 836         }
 837
 838         if( !Client->bIsAuthed ) {
 839                 sendf(Client->Socket, "401 Not Authenticated\n");
 840                 return ;
 841         }
 842
 843         // Check user permissions
 844         if( !(Bank_GetFlags(Client->UID) & (USER_FLAG_COKE|USER_FLAG_ADMIN))  ) {
 845                 sendf(Client->Socket, "403 Not in coke\n");
 846                 return ;
 847         }
 848
 849         uid = Bank_GetAcctByName(username, 0);
 850         if( uid == -1 ) {
 851                 sendf(Client->Socket, "404 Unknown user\n");
 852                 return ;
 853         }
 854
 855         item = _GetItemFromString(itemname);
 856         if( !item ) {
 857                 sendf(Client->Socket, "406 Bad Item ID\n");
 858                 return ;
 859         }
 860
 861         if( price_str )
 862                 price_override = atoi(price_str);
 863
 864         switch( DispenseRefund( Client->UID, uid, item, price_override ) )
 865         {
 866         case 0: sendf(Client->Socket, "200 Item Refunded\n");   return ;
 867         default:
 868                 sendf(Client->Socket, "500 Dispense Error\n");
 869                 return;
 870         }
 871 }
 872
 873 void Server_Cmd_GIVE(tClient *Client, char *Args)
 874 {
 875         char    *recipient, *ammount, *reason;
 876          int    uid, iAmmount;
 877          int    thisUid;
 878
 879         // Parse arguments
 880         if( Server_int_ParseArgs(1, Args, &recipient, &ammount, &reason, NULL) ) {
 881                 sendf(Client->Socket, "407 GIVE takes only 3 arguments\n");
 882                 return ;
 883         }
 884
 885         // Check for authed
 886         if( !Client->bIsAuthed ) {
 887                 sendf(Client->Socket, "401 Not Authenticated\n");
 888                 return ;
 889         }
 890
 891         // Get recipient
 892         uid = Bank_GetAcctByName(recipient, 0);
 893         if( uid == -1 ) {
 894                 sendf(Client->Socket, "404 Invalid target user\n");
 895                 return ;
 896         }
 897
 898         // You can't alter an internal account
 899 //      if( Bank_GetFlags(uid) & USER_FLAG_INTERNAL ) {
 900 //              sendf(Client->Socket, "404 Invalid target user\n");
 901 //              return ;
 902 //      }
 903
 904         // Parse ammount
 905         iAmmount = atoi(ammount);
 906         if( iAmmount <= 0 ) {
 907                 sendf(Client->Socket, "407 Invalid Argument, ammount must be > zero\n");
 908                 return ;
 909         }
 910
 911         if( Client->EffectiveUID != -1 ) {
 912                 thisUid = Client->EffectiveUID;
 913         }
 914         else {
 915                 thisUid = Client->UID;
 916         }
 917
 918         // Do give
 919         switch( DispenseGive(Client->UID, thisUid, uid, iAmmount, reason) )
 920         {
 921         case 0:
 922                 sendf(Client->Socket, "200 Give OK\n");
 923                 return ;
 924         case 2:
 925                 sendf(Client->Socket, "402 Poor You\n");
 926                 return ;
 927         default:
 928                 sendf(Client->Socket, "500 Unknown error\n");
 929                 return ;
 930         }
 931 }
 932
 933 void Server_Cmd_DONATE(tClient *Client, char *Args)
 934 {
 935         char    *ammount, *reason;
 936          int    iAmmount;
 937          int    thisUid;
 938
 939         // Parse arguments
 940         if( Server_int_ParseArgs(1, Args, &ammount, &reason, NULL) ) {
 941                 sendf(Client->Socket, "407 DONATE takes 2 arguments\n");
 942                 return ;
 943         }
 944
 945         if( !Client->bIsAuthed ) {
 946                 sendf(Client->Socket, "401 Not Authenticated\n");
 947                 return ;
 948         }
 949
 950         // Parse ammount
 951         iAmmount = atoi(ammount);
 952         if( iAmmount <= 0 ) {
 953                 sendf(Client->Socket, "407 Invalid Argument, ammount must be > zero\n");
 954                 return ;
 955         }
 956
 957         // Handle effective users
 958         if( Client->EffectiveUID != -1 ) {
 959                 thisUid = Client->EffectiveUID;
 960         }
 961         else {
 962                 thisUid = Client->UID;
 963         }
 964
 965         // Do give
 966         switch( DispenseDonate(Client->UID, thisUid, iAmmount, reason) )
 967         {
 968         case 0:
 969                 sendf(Client->Socket, "200 Give OK\n");
 970                 return ;
 971         case 2:
 972                 sendf(Client->Socket, "402 Poor You\n");
 973                 return ;
 974         default:
 975                 sendf(Client->Socket, "500 Unknown error\n");
 976                 return ;
 977         }
 978 }
 979
 980 void Server_Cmd_ADD(tClient *Client, char *Args)
 981 {
 982         char    *user, *ammount, *reason;
 983          int    uid, iAmmount;
 984
 985         // Parse arguments
 986         if( Server_int_ParseArgs(1, Args, &user, &ammount, &reason, NULL) ) {
 987                 sendf(Client->Socket, "407 ADD takes 3 arguments\n");
 988                 return ;
 989         }
 990
 991         if( !Client->bIsAuthed ) {
 992                 sendf(Client->Socket, "401 Not Authenticated\n");
 993                 return ;
 994         }
 995
 996         // Check user permissions
 997         if( !(Bank_GetFlags(Client->UID) & (USER_FLAG_COKE|USER_FLAG_ADMIN))  ) {
 998                 sendf(Client->Socket, "403 Not in coke\n");
 999                 return ;
1000         }
1001
1002         #if !ROOT_CAN_ADD
1003         if( strcmp( Client->Username, "root" ) == 0 ) {
1004                 // Allow adding for new users
1005                 if( strcmp(reason, "treasurer: new user") != 0 ) {
1006                         sendf(Client->Socket, "403 Root may not add\n");
1007                         return ;
1008                 }
1009         }
1010         #endif
1011
1012         #if HACK_NO_REFUNDS
1013         if( strstr(reason, "refund") != NULL || strstr(reason, "misdispense") != NULL )
1014         {
1015                 sendf(Client->Socket, "499 Don't use `dispense acct` for refunds, use `dispense refund` (and `dispense -G` to get item IDs)\n");
1016                 return ;
1017         }
1018         #endif
1019
1020         // Get recipient
1021         uid = Bank_GetAcctByName(user, 0);
1022         if( uid == -1 ) {
1023                 sendf(Client->Socket, "404 Invalid user\n");
1024                 return ;
1025         }
1026
1027         // You can't alter an internal account
1028         if( !(Bank_GetFlags(Client->UID) & USER_FLAG_ADMIN) )
1029         {
1030                 if( Bank_GetFlags(uid) & USER_FLAG_INTERNAL ) {
1031                         sendf(Client->Socket, "404 Invalid user\n");
1032                         return ;
1033                 }
1034                 // TODO: Maybe disallow changes to disabled?
1035         }
1036
1037         // Parse ammount
1038         iAmmount = atoi(ammount);
1039         if( iAmmount == 0 && ammount[0] != '0' ) {
1040                 sendf(Client->Socket, "407 Invalid Argument\n");
1041                 return ;
1042         }
1043
1044         // Do give
1045         switch( DispenseAdd(Client->UID, uid, iAmmount, reason) )
1046         {
1047         case 0:
1048                 sendf(Client->Socket, "200 Add OK\n");
1049                 return ;
1050         case 2:
1051                 sendf(Client->Socket, "402 Poor Guy\n");
1052                 return ;
1053         default:
1054                 sendf(Client->Socket, "500 Unknown error\n");
1055                 return ;
1056         }
1057 }
1058
1059 void Server_Cmd_SET(tClient *Client, char *Args)
1060 {
1061         char    *user, *ammount, *reason;
1062          int    uid, iAmmount;
1063
1064         // Parse arguments
1065         if( Server_int_ParseArgs(1, Args, &user, &ammount, &reason, NULL) ) {
1066                 sendf(Client->Socket, "407 SET takes 3 arguments\n");
1067                 return ;
1068         }
1069
1070         if( !Client->bIsAuthed ) {
1071                 sendf(Client->Socket, "401 Not Authenticated\n");
1072                 return ;
1073         }
1074
1075         // Check user permissions
1076         if( !(Bank_GetFlags(Client->UID) & USER_FLAG_ADMIN)  ) {
1077                 sendf(Client->Socket, "403 Not an admin\n");
1078                 return ;
1079         }
1080
1081         // Get recipient
1082         uid = Bank_GetAcctByName(user, 0);
1083         if( uid == -1 ) {
1084                 sendf(Client->Socket, "404 Invalid user\n");
1085                 return ;
1086         }
1087
1088         // Parse ammount
1089         iAmmount = atoi(ammount);
1090         if( iAmmount == 0 && ammount[0] != '0' ) {
1091                 sendf(Client->Socket, "407 Invalid Argument\n");
1092                 return ;
1093         }
1094
1095         // Do give
1096         switch( DispenseSet(Client->UID, uid, iAmmount, reason) )
1097         {
1098         case 0:
1099                 sendf(Client->Socket, "200 Add OK\n");
1100                 return ;
1101         case 2:
1102                 sendf(Client->Socket, "402 Poor Guy\n");
1103                 return ;
1104         default:
1105                 sendf(Client->Socket, "500 Unknown error\n");
1106                 return ;
1107         }
1108 }
1109
1110 void Server_Cmd_ENUMUSERS(tClient *Client, char *Args)
1111 {
1112          int    i, numRet = 0;
1113         tAcctIterator   *it;
1114          int    maxBal = INT_MAX, minBal = INT_MIN;
1115          int    flagMask = 0, flagVal = 0;
1116          int    sort = BANK_ITFLAG_SORT_NAME;
1117         time_t  lastSeenAfter=0, lastSeenBefore=0;
1118
1119          int    flags;  // Iterator flags
1120          int    balValue;       // Balance value for iterator
1121         time_t  timeValue;      // Time value for iterator
1122
1123         // Parse arguments
1124         if( Args && strlen(Args) )
1125         {
1126                 char    *space = Args, *type, *val;
1127                 do
1128                 {
1129                         type = space;
1130                         while(*type == ' ')     type ++;
1131                         // Get next space
1132                         space = strchr(space, ' ');
1133                         if(space)       *space = '\0';
1134
1135                         // Get type
1136                         val = strchr(type, ':');
1137                         if( val ) {
1138                                 *val = '\0';
1139                                 val ++;
1140
1141                                 // Types
1142                                 // - Minium Balance
1143                                 if( strcmp(type, "min_balance") == 0 ) {
1144                                         minBal = atoi(val);
1145                                 }
1146                                 // - Maximum Balance
1147                                 else if( strcmp(type, "max_balance") == 0 ) {
1148                                         maxBal = atoi(val);
1149                                 }
1150                                 // - Flags
1151                                 else if( strcmp(type, "flags") == 0 ) {
1152                                         if( Server_int_ParseFlags(Client, val, &flagMask, &flagVal) )
1153                                                 return ;
1154                                 }
1155                                 // - Last seen before timestamp
1156                                 else if( strcmp(type, "last_seen_before") == 0 ) {
1157                                         lastSeenAfter = atoll(val);
1158                                 }
1159                                 // - Last seen after timestamp
1160                                 else if( strcmp(type, "last_seen_after") == 0 ) {
1161                                         lastSeenAfter = atoll(val);
1162                                 }
1163                                 // - Sorting
1164                                 else if( strcmp(type, "sort") == 0 ) {
1165                                         char    *dash = strchr(val, '-');
1166                                         if( dash ) {
1167                                                 *dash = '\0';
1168                                                 dash ++;
1169                                         }
1170                                         if( strcmp(val, "name") == 0 ) {
1171                                                 sort = BANK_ITFLAG_SORT_NAME;
1172                                         }
1173                                         else if( strcmp(val, "balance") == 0 ) {
1174                                                 sort = BANK_ITFLAG_SORT_BAL;
1175                                         }
1176                                         else if( strcmp(val, "lastseen") == 0 ) {
1177                                                 sort = BANK_ITFLAG_SORT_LASTSEEN;
1178                                         }
1179                                         else {
1180                                                 sendf(Client->Socket, "407 Unknown sort field ('%s')\n", val);
1181                                                 return ;
1182                                         }
1183                                         // Handle sort direction
1184                                         if( dash ) {
1185                                                 if( strcmp(dash, "desc") == 0 ) {
1186                                                         sort |= BANK_ITFLAG_REVSORT;
1187                                                 }
1188                                                 else {
1189                                                         sendf(Client->Socket, "407 Unknown sort direction '%s'\n", dash);
1190                                                         return ;
1191                                                 }
1192                                                 dash[-1] = '-';
1193                                         }
1194                                 }
1195                                 else {
1196                                         sendf(Client->Socket, "407 Unknown argument to ENUM_USERS '%s:%s'\n", type, val);
1197                                         return ;
1198                                 }
1199
1200                                 val[-1] = ':';
1201                         }
1202                         else {
1203                                 sendf(Client->Socket, "407 Unknown argument to ENUM_USERS '%s'\n", type);
1204                                 return ;
1205                         }
1206
1207                         // Eat whitespace
1208                         if( space ) {
1209                                 *space = ' ';   // Repair (to be nice)
1210                                 space ++;
1211                                 while(*space == ' ')    space ++;
1212                         }
1213                 }       while(space);
1214         }
1215
1216         // Create iterator
1217         if( maxBal != INT_MAX ) {
1218                 flags = sort|BANK_ITFLAG_MAXBALANCE;
1219                 balValue = maxBal;
1220         }
1221         else if( minBal != INT_MIN ) {
1222                 flags = sort|BANK_ITFLAG_MINBALANCE;
1223                 balValue = minBal;
1224         }
1225         else {
1226                 flags = sort;
1227                 balValue = 0;
1228         }
1229         if( lastSeenBefore ) {
1230                 timeValue = lastSeenBefore;
1231                 flags |= BANK_ITFLAG_SEENBEFORE;
1232         }
1233         else if( lastSeenAfter ) {
1234                 timeValue = lastSeenAfter;
1235                 flags |= BANK_ITFLAG_SEENAFTER;
1236         }
1237         else {
1238                 timeValue = 0;
1239         }
1240         it = Bank_Iterator(flagMask, flagVal, flags, balValue, timeValue);
1241
1242         // Get return number
1243         while( (i = Bank_IteratorNext(it)) != -1 )
1244         {
1245                 int bal = Bank_GetBalance(i);
1246
1247                 if( bal == INT_MIN )    continue;
1248
1249                 if( bal < minBal )      continue;
1250                 if( bal > maxBal )      continue;
1251
1252                 numRet ++;
1253         }
1254
1255         Bank_DelIterator(it);
1256
1257         // Send count
1258         sendf(Client->Socket, "201 Users %i\n", numRet);
1259
1260
1261         // Create iterator
1262         it = Bank_Iterator(flagMask, flagVal, flags, balValue, timeValue);
1263
1264         while( (i = Bank_IteratorNext(it)) != -1 )
1265         {
1266                 int bal = Bank_GetBalance(i);
1267
1268                 if( bal == INT_MIN )    continue;
1269
1270                 if( bal < minBal )      continue;
1271                 if( bal > maxBal )      continue;
1272
1273                 _SendUserInfo(Client, i);
1274         }
1275
1276         Bank_DelIterator(it);
1277
1278         sendf(Client->Socket, "200 List End\n");
1279 }
1280
1281 void Server_Cmd_USERINFO(tClient *Client, char *Args)
1282 {
1283          int    uid;
1284         char    *user;
1285
1286         // Parse arguments
1287         if( Server_int_ParseArgs(0, Args, &user, NULL) ) {
1288                 sendf(Client->Socket, "407 USER_INFO takes 1 argument\n");
1289                 return ;
1290         }
1291
1292         if( giDebugLevel )      Debug(Client, "User Info '%s'", user);
1293
1294         // Get recipient
1295         uid = Bank_GetAcctByName(user, 0);
1296
1297         if( giDebugLevel >= 2 ) Debug(Client, "uid = %i", uid);
1298         if( uid == -1 ) {
1299                 sendf(Client->Socket, "404 Invalid user\n");
1300                 return ;
1301         }
1302
1303         _SendUserInfo(Client, uid);
1304 }
1305
1306 void _SendUserInfo(tClient *Client, int UserID)
1307 {
1308         char    *type, *disabled="", *door="";
1309          int    flags = Bank_GetFlags(UserID);
1310
1311         if( flags & USER_FLAG_INTERNAL ) {
1312                 type = "internal";
1313         }
1314         else if( flags & USER_FLAG_COKE ) {
1315                 if( flags & USER_FLAG_ADMIN )
1316                         type = "coke,admin";
1317                 else
1318                         type = "coke";
1319         }
1320         else if( flags & USER_FLAG_ADMIN ) {
1321                 type = "admin";
1322         }
1323         else {
1324                 type = "user";
1325         }
1326
1327         if( flags & USER_FLAG_DISABLED )
1328                 disabled = ",disabled";
1329         if( flags & USER_FLAG_DOORGROUP )
1330                 door = ",door";
1331
1332         // TODO: User flags/type
1333         sendf(
1334                 Client->Socket, "202 User %s %i %s%s%s\n",
1335                 Bank_GetAcctName(UserID), Bank_GetBalance(UserID),
1336                 type, disabled, door
1337                 );
1338 }
1339
1340 void Server_Cmd_USERADD(tClient *Client, char *Args)
1341 {
1342         char    *username;
1343
1344         // Parse arguments
1345         if( Server_int_ParseArgs(0, Args, &username, NULL) ) {
1346                 sendf(Client->Socket, "407 USER_ADD takes 1 argument\n");
1347                 return ;
1348         }
1349
1350         // Check authentication
1351         if( !Client->bIsAuthed ) {
1352                 sendf(Client->Socket, "401 Not Authenticated\n");
1353                 return ;
1354         }
1355
1356         // Check permissions
1357         if( !(Bank_GetFlags(Client->UID) & USER_FLAG_ADMIN) ) {
1358                 sendf(Client->Socket, "403 Not a coke admin\n");
1359                 return ;
1360         }
1361
1362         // Try to create user
1363         if( Bank_CreateAcct(username) == -1 ) {
1364                 sendf(Client->Socket, "404 User exists\n");
1365                 return ;
1366         }
1367
1368         {
1369                 char    *thisName = Bank_GetAcctName(Client->UID);
1370                 Log_Info("Account '%s' created by '%s'", username, thisName);
1371                 free(thisName);
1372         }
1373
1374         sendf(Client->Socket, "200 User Added\n");
1375 }
1376
1377 void Server_Cmd_USERFLAGS(tClient *Client, char *Args)
1378 {
1379         char    *username, *flags, *reason=NULL;
1380          int    mask=0, value=0;
1381          int    uid;
1382
1383         // Parse arguments
1384         if( Server_int_ParseArgs(1, Args, &username, &flags, &reason, NULL) ) {
1385                 if( !flags ) {
1386                         sendf(Client->Socket, "407 USER_FLAGS takes at least 2 arguments\n");
1387                         return ;
1388                 }
1389                 reason = "";
1390         }
1391
1392         // Check authentication
1393         if( !Client->bIsAuthed ) {
1394                 sendf(Client->Socket, "401 Not Authenticated\n");
1395                 return ;
1396         }
1397
1398         // Check permissions
1399         if( !(Bank_GetFlags(Client->UID) & USER_FLAG_ADMIN) ) {
1400                 sendf(Client->Socket, "403 Not a coke admin\n");
1401                 return ;
1402         }
1403
1404         // Get UID
1405         uid = Bank_GetAcctByName(username, 0);
1406         if( uid == -1 ) {
1407                 sendf(Client->Socket, "404 User '%s' not found\n", username);
1408                 return ;
1409         }
1410
1411         // Parse flags
1412         if( Server_int_ParseFlags(Client, flags, &mask, &value) )
1413                 return ;
1414
1415         if( giDebugLevel )
1416                 Debug(Client, "Set %i(%s) flags to %x (masked %x)\n",
1417                         uid, username, mask, value);
1418
1419         // Apply flags
1420         Bank_SetFlags(uid, mask, value);
1421
1422         // Log the change
1423         Log_Info("Updated '%s' with flag set '%s' by '%s' - Reason: %s",
1424                 username, flags, Client->Username, reason);
1425
1426         // Return OK
1427         sendf(Client->Socket, "200 User Updated\n");
1428 }
1429
1430 void Server_Cmd_UPDATEITEM(tClient *Client, char *Args)
1431 {
1432         char    *itemname, *price_str, *description;
1433          int    price;
1434         tItem   *item;
1435
1436         if( Server_int_ParseArgs(1, Args, &itemname, &price_str, &description, NULL) ) {
1437                 sendf(Client->Socket, "407 UPDATE_ITEM takes 3 arguments\n");
1438                 return ;
1439         }
1440
1441         if( !Client->bIsAuthed ) {
1442                 sendf(Client->Socket, "401 Not Authenticated\n");
1443                 return ;
1444         }
1445
1446         // Check user permissions
1447         if( !(Bank_GetFlags(Client->UID) & (USER_FLAG_COKE|USER_FLAG_ADMIN))  ) {
1448                 sendf(Client->Socket, "403 Not in coke\n");
1449                 return ;
1450         }
1451
1452         item = _GetItemFromString(itemname);
1453         if( !item ) {
1454                 // TODO: Create item?
1455                 sendf(Client->Socket, "406 Bad Item ID\n");
1456                 return ;
1457         }
1458
1459         price = atoi(price_str);
1460         if( price <= 0 && price_str[0] != '0' ) {
1461                 sendf(Client->Socket, "407 Invalid price set\n");
1462         }
1463
1464         switch( DispenseUpdateItem( Client->UID, item, description, price ) )
1465         {
1466         case 0:
1467                 // Return OK
1468                 sendf(Client->Socket, "200 Item updated\n");
1469                 break;
1470         default:
1471                 break;
1472         }
1473 }
1474
1475 // --- INTERNAL HELPERS ---
1476 void Debug(tClient *Client, const char *Format, ...)
1477 {
1478         va_list args;
1479         //printf("%010i [%i] ", (int)time(NULL), Client->ID);
1480         printf("[%i] ", Client->ID);
1481         va_start(args, Format);
1482         vprintf(Format, args);
1483         va_end(args);
1484         printf("\n");
1485 }
1486
1487 int sendf(int Socket, const char *Format, ...)
1488 {
1489         va_list args;
1490          int    len;
1491
1492         va_start(args, Format);
1493         len = vsnprintf(NULL, 0, Format, args);
1494         va_end(args);
1495
1496         {
1497                 char    buf[len+1];
1498                 va_start(args, Format);
1499                 vsnprintf(buf, len+1, Format, args);
1500                 va_end(args);
1501
1502                 #if DEBUG_TRACE_CLIENT
1503                 printf("sendf: %s", buf);
1504                 #endif
1505
1506                 return send(Socket, buf, len, 0);
1507         }
1508 }
1509
1510 // Takes a series of char *'s in
1511 /**
1512  * \brief Parse space-separated entries into
1513  */
1514 int Server_int_ParseArgs(int bUseLongLast, char *ArgStr, ...)
1515 {
1516         va_list args;
1517         char    savedChar;
1518         char    **dest;
1519         va_start(args, ArgStr);
1520
1521         // Check for null
1522         if( !ArgStr )
1523         {
1524                 while( (dest = va_arg(args, char **)) )
1525                         *dest = NULL;
1526                 va_end(args);
1527                 return 1;
1528         }
1529
1530         savedChar = *ArgStr;
1531
1532         while( (dest = va_arg(args, char **)) )
1533         {
1534                 // Trim leading spaces
1535                 while( *ArgStr == ' ' || *ArgStr == '\t' )
1536                         ArgStr ++;
1537
1538                 // ... oops, not enough arguments
1539                 if( *ArgStr == '\0' )
1540                 {
1541                         // NULL unset arguments
1542                         do {
1543                                 *dest = NULL;
1544                         }       while( (dest = va_arg(args, char **)) );
1545                 va_end(args);
1546                         return -1;
1547                 }
1548
1549                 if( *ArgStr == '"' )
1550                 {
1551                         ArgStr ++;
1552                         *dest = ArgStr;
1553                         // Read until quote
1554                         while( *ArgStr && *ArgStr != '"' )
1555                                 ArgStr ++;
1556                 }
1557                 else
1558                 {
1559                         // Set destination
1560                         *dest = ArgStr;
1561                         // Read until a space
1562                         while( *ArgStr && *ArgStr != ' ' && *ArgStr != '\t' )
1563                                 ArgStr ++;
1564                 }
1565                 savedChar = *ArgStr;    // savedChar is used to un-mangle the last string
1566                 *ArgStr = '\0';
1567                 ArgStr ++;
1568         }
1569         va_end(args);
1570
1571         // Oops, extra arguments, and greedy not set
1572         if( (savedChar == ' ' || savedChar == '\t') && !bUseLongLast ) {
1573                 return -1;
1574         }
1575
1576         // Un-mangle last
1577         if(bUseLongLast) {
1578                 ArgStr --;
1579                 *ArgStr = savedChar;
1580         }
1581
1582         return 0;       // Success!
1583 }
1584
1585 int Server_int_ParseFlags(tClient *Client, const char *Str, int *Mask, int *Value)
1586 {
1587         struct {
1588                 const char      *Name;
1589                  int    Mask;
1590                  int    Value;
1591         }       cFLAGS[] = {
1592                  {"disabled", USER_FLAG_DISABLED, USER_FLAG_DISABLED}
1593                 ,{"door", USER_FLAG_DOORGROUP, USER_FLAG_DOORGROUP}
1594                 ,{"coke", USER_FLAG_COKE, USER_FLAG_COKE}
1595                 ,{"admin", USER_FLAG_ADMIN, USER_FLAG_ADMIN}
1596                 ,{"internal", USER_FLAG_INTERNAL, USER_FLAG_INTERNAL}
1597         };
1598         const int       ciNumFlags = sizeof(cFLAGS)/sizeof(cFLAGS[0]);
1599
1600         char    *space;
1601
1602         *Mask = 0;
1603         *Value = 0;
1604
1605         do {
1606                  int    bRemove = 0;
1607                  int    i;
1608                  int    len;
1609
1610                 while( *Str == ' ' )    Str ++; // Eat whitespace
1611                 space = strchr(Str, ',');       // Find the end of the flag
1612                 if(space)
1613                         len = space - Str;
1614                 else
1615                         len = strlen(Str);
1616
1617                 // Check for inversion/removal
1618                 if( *Str == '!' || *Str == '-' ) {
1619                         bRemove = 1;
1620                         Str ++;
1621                 }
1622                 else if( *Str == '+' ) {
1623                         Str ++;
1624                 }
1625
1626                 // Check flag values
1627                 for( i = 0; i < ciNumFlags; i ++ )
1628                 {
1629                         if( strncmp(Str, cFLAGS[i].Name, len) == 0 ) {
1630                                 *Mask |= cFLAGS[i].Mask;
1631                                 *Value &= ~cFLAGS[i].Mask;
1632                                 if( !bRemove )
1633                                         *Value |= cFLAGS[i].Value;
1634                                 break;
1635                         }
1636                 }
1637
1638                 // Error check
1639                 if( i == ciNumFlags ) {
1640                         char    val[len+1];
1641                         strncpy(val, Str, len+1);
1642                         sendf(Client->Socket, "407 Unknown flag value '%s'\n", val);
1643                         return -1;
1644                 }
1645
1646                 Str = space + 1;
1647         } while(space);
1648
1649         return 0;
1650 }