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 #define IDENT_TRUSTED_NETWORK 0x825F0D00
  38 #define IDENT_TRUSTED_NETMASK 0xFFFFFFC0
  39
  40 // === TYPES ===
  41 typedef struct sClient
  42 {
  43          int    Socket; // Client socket ID
  44          int    ID;     // Client ID
  45
  46          int    bIsTrusted;     // Is the connection from a trusted host/port
  47
  48         char    *Username;
  49         char    Salt[9];
  50
  51          int    UID;
  52          int    EffectiveUID;
  53          int    bIsAuthed;
  54 }       tClient;
  55
  56 // === PROTOTYPES ===
  57 void    Server_Start(void);
  58 void    Server_Cleanup(void);
  59 void    Server_HandleClient(int Socket, int bTrusted);
  60 void    Server_ParseClientCommand(tClient *Client, char *CommandString);
  61 // --- Commands ---
  62 void    Server_Cmd_USER(tClient *Client, char *Args);
  63 void    Server_Cmd_PASS(tClient *Client, char *Args);
  64 void    Server_Cmd_AUTOAUTH(tClient *Client, char *Args);
  65 void    Server_Cmd_AUTHIDENT(tClient *Client, char *Args);
  66 void    Server_Cmd_SETEUSER(tClient *Client, char *Args);
  67 void    Server_Cmd_ENUMITEMS(tClient *Client, char *Args);
  68 void    Server_Cmd_ITEMINFO(tClient *Client, char *Args);
  69 void    Server_Cmd_DISPENSE(tClient *Client, char *Args);
  70 void    Server_Cmd_REFUND(tClient *Client, char *Args);
  71 void    Server_Cmd_GIVE(tClient *Client, char *Args);
  72 void    Server_Cmd_DONATE(tClient *Client, char *Args);
  73 void    Server_Cmd_ADD(tClient *Client, char *Args);
  74 void    Server_Cmd_SET(tClient *Client, char *Args);
  75 void    Server_Cmd_ENUMUSERS(tClient *Client, char *Args);
  76 void    Server_Cmd_USERINFO(tClient *Client, char *Args);
  77 void    _SendUserInfo(tClient *Client, int UserID);
  78 void    Server_Cmd_USERADD(tClient *Client, char *Args);
  79 void    Server_Cmd_USERFLAGS(tClient *Client, char *Args);
  80 void    Server_Cmd_UPDATEITEM(tClient *Client, char *Args);
  81 // --- Helpers ---
  82 void    Debug(tClient *Client, const char *Format, ...);
  83  int    sendf(int Socket, const char *Format, ...);
  84  int    Server_int_ParseArgs(int bUseLongArg, char *ArgStr, ...);
  85  int    Server_int_ParseFlags(tClient *Client, const char *Str, int *Mask, int *Value);
  86
  87 // === CONSTANTS ===
  88 // - Commands
  89 const struct sClientCommand {
  90         const char      *Name;
  91         void    (*Function)(tClient *Client, char *Arguments);
  92 }       gaServer_Commands[] = {
  93         {"USER", Server_Cmd_USER},
  94         {"PASS", Server_Cmd_PASS},
  95         {"AUTOAUTH", Server_Cmd_AUTOAUTH},
  96         {"AUTHIDENT", Server_Cmd_AUTHIDENT},
  97         {"SETEUSER", Server_Cmd_SETEUSER},
  98         {"ENUM_ITEMS", Server_Cmd_ENUMITEMS},
  99         {"ITEM_INFO", Server_Cmd_ITEMINFO},
 100         {"DISPENSE", Server_Cmd_DISPENSE},
 101         {"REFUND", Server_Cmd_REFUND},
 102         {"GIVE", Server_Cmd_GIVE},
 103         {"DONATE", Server_Cmd_DONATE},
 104         {"ADD", Server_Cmd_ADD},
 105         {"SET", Server_Cmd_SET},
 106         {"ENUM_USERS", Server_Cmd_ENUMUSERS},
 107         {"USER_INFO", Server_Cmd_USERINFO},
 108         {"USER_ADD", Server_Cmd_USERADD},
 109         {"USER_FLAGS", Server_Cmd_USERFLAGS},
 110         {"UPDATE_ITEM", Server_Cmd_UPDATEITEM}
 111 };
 112 #define NUM_COMMANDS    ((int)(sizeof(gaServer_Commands)/sizeof(gaServer_Commands[0])))
 113
 114 // === GLOBALS ===
 115 // - Configuration
 116  int    giServer_Port = 11020;
 117  int    gbServer_RunInBackground = 0;
 118 char    *gsServer_LogFile = "/var/log/dispsrv.log";
 119 char    *gsServer_ErrorLog = "/var/log/dispsrv.err";
 120 // - State variables
 121  int    giServer_Socket;        // Server socket
 122  int    giServer_NextClientID = 1;      // Debug client ID
 123
 124
 125 // === CODE ===
 126 /**
 127  * \brief Open listenting socket and serve connections
 128  */
 129 void Server_Start(void)
 130 {
 131          int    client_socket;
 132         struct sockaddr_in      server_addr, client_addr;
 133
 134         atexit(Server_Cleanup);
 135         // Ignore SIGPIPE (stops crashes when the client exits early)
 136         signal(SIGPIPE, SIG_IGN);
 137
 138         // Create Server
 139         giServer_Socket = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);
 140         if( giServer_Socket < 0 ) {
 141                 fprintf(stderr, "ERROR: Unable to create server socket\n");
 142                 return ;
 143         }
 144
 145         // Make listen address
 146         memset(&server_addr, 0, sizeof(server_addr));
 147         server_addr.sin_family = AF_INET;       // Internet Socket
 148         server_addr.sin_addr.s_addr = htonl(INADDR_ANY);        // Listen on all interfaces
 149         server_addr.sin_port = htons(giServer_Port);    // Port
 150
 151         // Bind
 152         if( bind(giServer_Socket, (struct sockaddr *) &server_addr, sizeof(server_addr)) < 0 ) {
 153                 fprintf(stderr, "ERROR: Unable to bind to 0.0.0.0:%i\n", giServer_Port);
 154                 perror("Binding");
 155                 return ;
 156         }
 157
 158         // Fork into background
 159         if( gbServer_RunInBackground )
 160         {
 161                 int pid = fork();
 162                 if( pid == -1 ) {
 163                         fprintf(stderr, "ERROR: Unable to fork\n");
 164                         perror("fork background");
 165                         exit(-1);
 166                 }
 167                 if( pid != 0 ) {
 168                         // Parent, quit
 169                         exit(0);
 170                 }
 171                 // In child
 172                 // - Sort out stdin/stdout
 173                 #if 0
 174                 dup2( open("/dev/null", O_RDONLY, 0644), STDIN_FILENO );
 175                 dup2( open(gsServer_LogFile, O_CREAT|O_APPEND, 0644), STDOUT_FILENO );
 176                 dup2( open(gsServer_ErrorLog, O_CREAT|O_APPEND, 0644), STDERR_FILENO );
 177                 #else
 178                 freopen("/dev/null", "r", stdin);
 179                 freopen(gsServer_LogFile, "a", stdout);
 180                 freopen(gsServer_ErrorLog, "a", stderr);
 181                 #endif
 182         }
 183
 184         // Start the helper thread
 185         StartPeriodicThread();
 186
 187         // Listen
 188         if( listen(giServer_Socket, MAX_CONNECTION_QUEUE) < 0 ) {
 189                 fprintf(stderr, "ERROR: Unable to listen to socket\n");
 190                 perror("Listen");
 191                 return ;
 192         }
 193
 194         printf("Listening on 0.0.0.0:%i\n", giServer_Port);
 195
 196         // write pidfile
 197         {
 198                 FILE *fp = fopen("/var/run/dispsrv.pid", "w");
 199                 if( fp ) {
 200                         fprintf(fp, "%i", getpid());
 201                         fclose(fp);
 202                 }
 203         }
 204
 205         for(;;)
 206         {
 207                 uint    len = sizeof(client_addr);
 208                  int    bTrusted = 0;
 209
 210                 // Accept a connection
 211                 client_socket = accept(giServer_Socket, (struct sockaddr *) &client_addr, &len);
 212                 if(client_socket < 0) {
 213                         fprintf(stderr, "ERROR: Unable to accept client connection\n");
 214                         return ;
 215                 }
 216
 217                 // Set a timeout on the user conneciton
 218                 {
 219                         struct timeval tv;
 220                         tv.tv_sec = CLIENT_TIMEOUT;
 221                         tv.tv_usec = 0;
 222                         if( setsockopt(client_socket, SOL_SOCKET, SO_RCVTIMEO, &tv, sizeof(tv)) )
 223                         {
 224                                 perror("setsockopt");
 225                                 return ;
 226                         }
 227                 }
 228
 229                 // Debug: Print the connection string
 230                 if(giDebugLevel >= 2) {
 231                         char    ipstr[INET_ADDRSTRLEN];
 232                         inet_ntop(AF_INET, &client_addr.sin_addr, ipstr, INET_ADDRSTRLEN);
 233                         printf("Client connection from %s:%i\n",
 234                                 ipstr, ntohs(client_addr.sin_port));
 235                 }
 236
 237                 // Doesn't matter what, localhost is trusted
 238                 if( ntohl( client_addr.sin_addr.s_addr ) == 0x7F000001 )
 239                         bTrusted = 1;
 240
 241                 // Trusted Connections
 242                 if( ntohs(client_addr.sin_port) < 1024 )
 243                 {
 244                         // TODO: Make this runtime configurable
 245                         switch( ntohl( client_addr.sin_addr.s_addr ) )
 246                         {
 247                         case 0x7F000001:        // 127.0.0.1    localhost
 248                 //      case 0x825F0D00:        // 130.95.13.0
 249                         case 0x825F0D04:        // 130.95.13.4  merlo
 250                 //      case 0x825F0D05:        // 130.95.13.5  heathred (MR)
 251                         case 0x825F0D07:        // 130.95.13.7  motsugo
 252                         case 0x825F0D11:        // 130.95.13.17 mermaid
 253                         case 0x825F0D12:        // 130.95.13.18 mussel
 254                         case 0x825F0D17:        // 130.95.13.23 martello
 255                         case 0x825F0D2A:        // 130.95.13.42 meersau
 256                 //      case 0x825F0D42:        // 130.95.13.66 heathred (Clubroom)
 257                                 bTrusted = 1;
 258                                 break;
 259                         default:
 260                                 break;
 261                         }
 262                 }
 263
 264                 // TODO: Multithread this?
 265                 Server_HandleClient(client_socket, bTrusted);
 266
 267                 close(client_socket);
 268         }
 269 }
 270
 271 void Server_Cleanup(void)
 272 {
 273         printf("\nClose(%i)\n", giServer_Socket);
 274         close(giServer_Socket);
 275         unlink("/var/run/dispsrv.pid");
 276 }
 277
 278 /**
 279  * \brief Reads from a client socket and parses the command strings
 280  * \param Socket        Client socket number/handle
 281  * \param bTrusted      Is the client trusted?
 282  */
 283 void Server_HandleClient(int Socket, int bTrusted)
 284 {
 285         char    inbuf[INPUT_BUFFER_SIZE];
 286         char    *buf = inbuf;
 287          int    remspace = INPUT_BUFFER_SIZE-1;
 288          int    bytes = -1;
 289         tClient clientInfo;
 290
 291         memset(&clientInfo, 0, sizeof(clientInfo));
 292
 293         // Initialise Client info
 294         clientInfo.Socket = Socket;
 295         clientInfo.ID = giServer_NextClientID ++;
 296         clientInfo.bIsTrusted = bTrusted;
 297         clientInfo.EffectiveUID = -1;
 298
 299         // Read from client
 300         /*
 301          * Notes:
 302          * - The `buf` and `remspace` variables allow a line to span several
 303          *   calls to recv(), if a line is not completed in one recv() call
 304          *   it is saved to the beginning of `inbuf` and `buf` is updated to
 305          *   the end of it.
 306          */
 307         // TODO: Use select() instead (to give a timeout)
 308         while( (bytes = recv(Socket, buf, remspace, 0)) > 0 )
 309         {
 310                 char    *eol, *start;
 311                 buf[bytes] = '\0';      // Allow us to use stdlib string functions on it
 312
 313                 // Split by lines
 314                 start = inbuf;
 315                 while( (eol = strchr(start, '\n')) )
 316                 {
 317                         *eol = '\0';
 318
 319                         Server_ParseClientCommand(&clientInfo, start);
 320
 321                         start = eol + 1;
 322                 }
 323
 324                 // Check if there was an incomplete line
 325                 if( *start != '\0' ) {
 326                          int    tailBytes = bytes - (start-buf);
 327                         // Roll back in buffer
 328                         memcpy(inbuf, start, tailBytes);
 329                         remspace -= tailBytes;
 330                         if(remspace == 0) {
 331                                 send(Socket, MSG_STR_TOO_LONG, sizeof(MSG_STR_TOO_LONG), 0);
 332                                 buf = inbuf;
 333                                 remspace = INPUT_BUFFER_SIZE - 1;
 334                         }
 335                 }
 336                 else {
 337                         buf = inbuf;
 338                         remspace = INPUT_BUFFER_SIZE - 1;
 339                 }
 340         }
 341
 342         // Check for errors
 343         if( bytes < 0 ) {
 344                 fprintf(stderr, "ERROR: Unable to recieve from client on socket %i\n", Socket);
 345                 return ;
 346         }
 347
 348         if(giDebugLevel >= 2) {
 349                 printf("Client %i: Disconnected\n", clientInfo.ID);
 350         }
 351 }
 352
 353 /**
 354  * \brief Parses a client command and calls the required helper function
 355  * \param Client        Pointer to client state structure
 356  * \param CommandString Command from client (single line of the command)
 357  * \return Heap String to return to the client
 358  */
 359 void Server_ParseClientCommand(tClient *Client, char *CommandString)
 360 {
 361         char    *command, *args;
 362          int    i;
 363
 364         if( giDebugLevel >= 2 )
 365                 Debug(Client, "Server_ParseClientCommand: (CommandString = '%s')", CommandString);
 366
 367         if( Server_int_ParseArgs(1, CommandString, &command, &args, NULL) )
 368         {
 369                 if( command == NULL )   return ;
 370                 // Is this an error? (just ignore for now)
 371         }
 372
 373
 374         // Find command
 375         for( i = 0; i < NUM_COMMANDS; i++ )
 376         {
 377                 if(strcmp(command, gaServer_Commands[i].Name) == 0) {
 378                         if( giDebugLevel >= 2 )
 379                                 Debug(Client, "CMD %s - \"%s\"", command, args);
 380                         gaServer_Commands[i].Function(Client, args);
 381                         return ;
 382                 }
 383         }
 384
 385         sendf(Client->Socket, "400 Unknown Command\n");
 386 }
 387
 388 // ---
 389 // Commands
 390 // ---
 391 /**
 392  * \brief Set client username
 393  *
 394  * Usage: USER <username>
 395  */
 396 void Server_Cmd_USER(tClient *Client, char *Args)
 397 {
 398         char    *username;
 399
 400         if( Server_int_ParseArgs(0, Args, &username, NULL) )
 401         {
 402                 sendf(Client->Socket, "407 USER takes 1 argument\n");
 403                 return ;
 404         }
 405
 406         // Debug!
 407         if( giDebugLevel )
 408                 Debug(Client, "Authenticating as '%s'", username);
 409
 410         // Save username
 411         if(Client->Username)
 412                 free(Client->Username);
 413         Client->Username = strdup(username);
 414
 415         #if USE_SALT
 416         // Create a salt (that changes if the username is changed)
 417         // Yes, I know, I'm a little paranoid, but who isn't?
 418         Client->Salt[0] = 0x21 + (rand()&0x3F);
 419         Client->Salt[1] = 0x21 + (rand()&0x3F);
 420         Client->Salt[2] = 0x21 + (rand()&0x3F);
 421         Client->Salt[3] = 0x21 + (rand()&0x3F);
 422         Client->Salt[4] = 0x21 + (rand()&0x3F);
 423         Client->Salt[5] = 0x21 + (rand()&0x3F);
 424         Client->Salt[6] = 0x21 + (rand()&0x3F);
 425         Client->Salt[7] = 0x21 + (rand()&0x3F);
 426
 427         // TODO: Also send hash type to use, (SHA1 or crypt according to [DAA])
 428         sendf(Client->Socket, "100 SALT %s\n", Client->Salt);
 429         #else
 430         sendf(Client->Socket, "100 User Set\n");
 431         #endif
 432 }
 433
 434 /**
 435  * \brief Authenticate as a user
 436  *
 437  * Usage: PASS <hash>
 438  */
 439 void Server_Cmd_PASS(tClient *Client, char *Args)
 440 {
 441         char    *passhash;
 442          int    flags;
 443
 444         if( Server_int_ParseArgs(0, Args, &passhash, NULL) )
 445         {
 446                 sendf(Client->Socket, "407 PASS takes 1 argument\n");
 447                 return ;
 448         }
 449
 450         // Pass on to cokebank
 451         Client->UID = Bank_GetUserAuth(Client->Salt, Client->Username, passhash);
 452
 453         if( Client->UID == -1 ) {
 454                 sendf(Client->Socket, "401 Auth Failure\n");
 455                 return ;
 456         }
 457
 458         flags = Bank_GetFlags(Client->UID);
 459         if( flags & USER_FLAG_DISABLED ) {
 460                 Client->UID = -1;
 461                 sendf(Client->Socket, "403 Account Disabled\n");
 462                 return ;
 463         }
 464         if( flags & USER_FLAG_INTERNAL ) {
 465                 Client->UID = -1;
 466                 sendf(Client->Socket, "403 Internal account\n");
 467                 return ;
 468         }
 469
 470         Client->bIsAuthed = 1;
 471         sendf(Client->Socket, "200 Auth OK\n");
 472 }
 473
 474 /**
 475  * \brief Authenticate as a user without a password
 476  *
 477  * Usage: AUTOAUTH <user>
 478  */
 479 void Server_Cmd_AUTOAUTH(tClient *Client, char *Args)
 480 {
 481         char    *username;
 482          int    userflags;
 483
 484         if( Server_int_ParseArgs(0, Args, &username, NULL) )
 485         {
 486                 sendf(Client->Socket, "407 AUTOAUTH takes 1 argument\n");
 487                 return ;
 488         }
 489
 490         // Check if trusted
 491         if( !Client->bIsTrusted ) {
 492                 if(giDebugLevel)
 493                         Debug(Client, "Untrusted client attempting to AUTOAUTH");
 494                 sendf(Client->Socket, "401 Untrusted\n");
 495                 return ;
 496         }
 497
 498         // Get UID
 499         Client->UID = Bank_GetAcctByName( username, 0 );
 500         if( Client->UID < 0 ) {
 501                 if(giDebugLevel)
 502                         Debug(Client, "Unknown user '%s'", username);
 503                 sendf(Client->Socket, "403 Auth Failure\n");
 504                 return ;
 505         }
 506
 507         userflags = Bank_GetFlags(Client->UID);
 508         // You can't be an internal account
 509         if( userflags & USER_FLAG_INTERNAL ) {
 510                 if(giDebugLevel)
 511                         Debug(Client, "Autoauth as '%s', not allowed", username);
 512                 Client->UID = -1;
 513                 sendf(Client->Socket, "403 Account is internal\n");
 514                 return ;
 515         }
 516
 517         // Disabled accounts
 518         if( userflags & USER_FLAG_DISABLED ) {
 519                 Client->UID = -1;
 520                 sendf(Client->Socket, "403 Account disabled\n");
 521                 return ;
 522         }
 523
 524         // Save username
 525         if(Client->Username)
 526                 free(Client->Username);
 527         Client->Username = strdup(username);
 528
 529         Client->bIsAuthed = 1;
 530
 531         if(giDebugLevel)
 532                 Debug(Client, "Auto authenticated as '%s' (%i)", username, Client->UID);
 533
 534         sendf(Client->Socket, "200 Auth OK\n");
 535 }
 536
 537 /**
 538  * \brief Authenticate as a user using the IDENT protocol
 539  *
 540  * Usage: AUTHIDENT
 541  */
 542 void Server_Cmd_AUTHIDENT(tClient *Client, char *Args)
 543 {
 544         char    *username;
 545          int    userflags;
 546         const int ident_timeout = 5;
 547         socklen_t len;
 548         struct sockaddr_in client_addr;
 549         uint32_t  client_ip;
 550
 551         if( Args != NULL && strlen(Args) ) {
 552                 sendf(Client->Socket, "407 AUTHIDENT takes no arguments\n");
 553                 return ;
 554         }
 555
 556         // Check if trusted (only works with INET sockets at present)
 557         len = sizeof(client_addr);
 558         if ( ! getpeername(Client->Socket, (struct sockaddr*)&client_addr, &len) ) {
 559                 // throw an error
 560         }
 561
 562         client_ip = client_addr.sin_addr.s_addr;
 563         if ( ! (ntohl(client_ip) == 0x7F000001 || ( (ntohl(client_ip) & IDENT_TRUSTED_NETMASK) == IDENT_TRUSTED_NETWORK ) )) {
 564                         if(giDebugLevel)
 565                                 Debug(Client, "Untrusted client attempting to AUTHIDENT");
 566                         sendf(Client->Socket, "401 Untrusted\n");
 567                         return ;
 568         }
 569
 570         // Get username via IDENT
 571         username = ident_id(Client->Socket, ident_timeout);
 572         if (!username) {
 573                 sendf(Client->Socket, "403 Authentication failure: IDENT auth timed out\n");
 574         }
 575
 576         // Get UID
 577         Client->UID = Bank_GetAcctByName( username, 0 );
 578         if( Client->UID < 0 ) {
 579                 if(giDebugLevel)
 580                         Debug(Client, "Unknown user '%s'", username);
 581                 sendf(Client->Socket, "403 Authentication failure: unknown account\n");
 582                 free(username);
 583                 return ;
 584         }
 585
 586         userflags = Bank_GetFlags(Client->UID);
 587         // You can't be an internal account
 588         if( userflags & USER_FLAG_INTERNAL ) {
 589                 if(giDebugLevel)
 590                         Debug(Client, "IDENT auth as '%s', not allowed", username);
 591                 Client->UID = -1;
 592                 sendf(Client->Socket, "403 Authentication failure: that account is internal\n");
 593                 free(username);
 594                 return ;
 595         }
 596
 597         // Disabled accounts
 598         if( userflags & USER_FLAG_DISABLED ) {
 599                 Client->UID = -1;
 600                 sendf(Client->Socket, "403 Authentication failure: account disabled\n");
 601                 free(username);
 602                 return ;
 603         }
 604
 605         // Save username
 606         if(Client->Username)
 607                 free(Client->Username);
 608         Client->Username = strdup(username);
 609
 610         Client->bIsAuthed = 1;
 611
 612         if(giDebugLevel)
 613                 Debug(Client, "IDENT authenticated as '%s' (%i)", username, Client->UID);
 614         free(username);
 615
 616         sendf(Client->Socket, "200 Auth OK\n");
 617 }
 618
 619 /**
 620  * \brief Set effective user
 621  */
 622 void Server_Cmd_SETEUSER(tClient *Client, char *Args)
 623 {
 624         char    *username;
 625          int    eUserFlags, userFlags;
 626
 627         if( Server_int_ParseArgs(0, Args, &username, NULL) )
 628         {
 629                 sendf(Client->Socket, "407 SETEUSER takes 1 argument\n");
 630                 return ;
 631         }
 632
 633         if( !strlen(Args) ) {
 634                 sendf(Client->Socket, "407 SETEUSER expects an argument\n");
 635                 return ;
 636         }
 637
 638         // Check authentication
 639         if( !Client->bIsAuthed ) {
 640                 sendf(Client->Socket, "401 Not Authenticated\n");
 641                 return ;
 642         }
 643
 644         // Check user permissions
 645         userFlags = Bank_GetFlags(Client->UID);
 646         if( !(userFlags & (USER_FLAG_COKE|USER_FLAG_ADMIN)) ) {
 647                 sendf(Client->Socket, "403 Not in coke\n");
 648                 return ;
 649         }
 650
 651         // Set id
 652         Client->EffectiveUID = Bank_GetAcctByName(username, 0);
 653         if( Client->EffectiveUID == -1 ) {
 654                 sendf(Client->Socket, "404 User not found\n");
 655                 return ;
 656         }
 657
 658         // You can't be an internal account
 659         if( !(userFlags & USER_FLAG_ADMIN) )
 660         {
 661                 eUserFlags = Bank_GetFlags(Client->EffectiveUID);
 662                 if( eUserFlags & USER_FLAG_INTERNAL ) {
 663                         Client->EffectiveUID = -1;
 664                         sendf(Client->Socket, "404 User not found\n");
 665                         return ;
 666                 }
 667                 // Disabled only avaliable to admins
 668                 if( eUserFlags & USER_FLAG_DISABLED ) {
 669                         Client->EffectiveUID = -1;
 670                         sendf(Client->Socket, "403 Account disabled\n");
 671                         return ;
 672                 }
 673         }
 674
 675         sendf(Client->Socket, "200 User set\n");
 676 }
 677
 678 /**
 679  * \brief Send an item status to the client
 680  * \param Client        Who to?
 681  * \param Item  Item to send
 682  */
 683 void Server_int_SendItem(tClient *Client, tItem *Item)
 684 {
 685         char    *status = "avail";
 686
 687         if( Item->Handler->CanDispense )
 688         {
 689                 switch(Item->Handler->CanDispense(Client->UID, Item->ID))
 690                 {
 691                 case  0:        status = "avail";       break;
 692                 case  1:        status = "sold";        break;
 693                 default:
 694                 case -1:        status = "error";       break;
 695                 }
 696         }
 697
 698         // KNOWN HACK: Naming a slot 'dead' disables it
 699         if( strcmp(Item->Name, "dead") == 0 )
 700                 status = "sold";        // Another status?
 701
 702         sendf(Client->Socket,
 703                 "202 Item %s:%i %s %i %s\n",
 704                 Item->Handler->Name, Item->ID, status, Item->Price, Item->Name
 705                 );
 706 }
 707
 708 /**
 709  * \brief Enumerate the items that the server knows about
 710  */
 711 void Server_Cmd_ENUMITEMS(tClient *Client, char *Args)
 712 {
 713          int    i, count;
 714
 715         if( Args != NULL && strlen(Args) ) {
 716                 sendf(Client->Socket, "407 ENUM_ITEMS takes no arguments\n");
 717                 return ;
 718         }
 719
 720         // Count shown items
 721         count = 0;
 722         for( i = 0; i < giNumItems; i ++ ) {
 723                 if( gaItems[i].bHidden )        continue;
 724                 count ++;
 725         }
 726
 727         sendf(Client->Socket, "201 Items %i\n", count);
 728
 729         for( i = 0; i < giNumItems; i ++ ) {
 730                 if( gaItems[i].bHidden )        continue;
 731                 Server_int_SendItem( Client, &gaItems[i] );
 732         }
 733
 734         sendf(Client->Socket, "200 List end\n");
 735 }
 736
 737 tItem *_GetItemFromString(char *String)
 738 {
 739         tHandler        *handler;
 740         char    *type = String;
 741         char    *colon = strchr(String, ':');
 742          int    num, i;
 743
 744         if( !colon ) {
 745                 return NULL;
 746         }
 747
 748         num = atoi(colon+1);
 749         *colon = '\0';
 750
 751         // Find handler
 752         handler = NULL;
 753         for( i = 0; i < giNumHandlers; i ++ )
 754         {
 755                 if( strcmp(gaHandlers[i]->Name, type) == 0) {
 756                         handler = gaHandlers[i];
 757                         break;
 758                 }
 759         }
 760         if( !handler ) {
 761                 return NULL;
 762         }
 763
 764         // Find item
 765         for( i = 0; i < giNumItems; i ++ )
 766         {
 767                 if( gaItems[i].Handler != handler )     continue;
 768                 if( gaItems[i].ID != num )      continue;
 769                 return &gaItems[i];
 770         }
 771         return NULL;
 772 }
 773
 774 /**
 775  * \brief Fetch information on a specific item
 776  */
 777 void Server_Cmd_ITEMINFO(tClient *Client, char *Args)
 778 {
 779         tItem   *item;
 780         char    *itemname;
 781
 782         if( Server_int_ParseArgs(0, Args, &itemname, NULL) ) {
 783                 sendf(Client->Socket, "407 ITEMINFO takes 1 argument\n");
 784                 return ;
 785         }
 786         item = _GetItemFromString(Args);
 787
 788         if( !item ) {
 789                 sendf(Client->Socket, "406 Bad Item ID\n");
 790                 return ;
 791         }
 792
 793         Server_int_SendItem( Client, item );
 794 }
 795
 796 void Server_Cmd_DISPENSE(tClient *Client, char *Args)
 797 {
 798         tItem   *item;
 799          int    ret;
 800          int    uid;
 801         char    *itemname;
 802
 803         if( Server_int_ParseArgs(0, Args, &itemname, NULL) ) {
 804                 sendf(Client->Socket, "407 DISPENSE takes only 1 argument\n");
 805                 return ;
 806         }
 807
 808         if( !Client->bIsAuthed ) {
 809                 sendf(Client->Socket, "401 Not Authenticated\n");
 810                 return ;
 811         }
 812
 813         item = _GetItemFromString(itemname);
 814         if( !item ) {
 815                 sendf(Client->Socket, "406 Bad Item ID\n");
 816                 return ;
 817         }
 818
 819         if( Client->EffectiveUID != -1 ) {
 820                 uid = Client->EffectiveUID;
 821         }
 822         else {
 823                 uid = Client->UID;
 824         }
 825
 826         switch( ret = DispenseItem( Client->UID, uid, item ) )
 827         {
 828         case 0: sendf(Client->Socket, "200 Dispense OK\n");     return ;
 829         case 1: sendf(Client->Socket, "501 Unable to dispense\n");      return ;
 830         case 2: sendf(Client->Socket, "402 Poor You\n");        return ;
 831         default:
 832                 sendf(Client->Socket, "500 Dispense Error (%i)\n", ret);
 833                 return ;
 834         }
 835 }
 836
 837 void Server_Cmd_REFUND(tClient *Client, char *Args)
 838 {
 839         tItem   *item;
 840          int    uid, price_override = 0;
 841         char    *username, *itemname, *price_str;
 842
 843         if( Server_int_ParseArgs(0, Args, &username, &itemname, &price_str, NULL) ) {
 844                 if( !itemname || price_str ) {
 845                         sendf(Client->Socket, "407 REFUND takes 2 or 3 arguments\n");
 846                         return ;
 847                 }
 848         }
 849
 850         if( !Client->bIsAuthed ) {
 851                 sendf(Client->Socket, "401 Not Authenticated\n");
 852                 return ;
 853         }
 854
 855         // Check user permissions
 856         if( !(Bank_GetFlags(Client->UID) & (USER_FLAG_COKE|USER_FLAG_ADMIN))  ) {
 857                 sendf(Client->Socket, "403 Not in coke\n");
 858                 return ;
 859         }
 860
 861         uid = Bank_GetAcctByName(username, 0);
 862         if( uid == -1 ) {
 863                 sendf(Client->Socket, "404 Unknown user\n");
 864                 return ;
 865         }
 866
 867         item = _GetItemFromString(itemname);
 868         if( !item ) {
 869                 sendf(Client->Socket, "406 Bad Item ID\n");
 870                 return ;
 871         }
 872
 873         if( price_str )
 874                 price_override = atoi(price_str);
 875
 876         switch( DispenseRefund( Client->UID, uid, item, price_override ) )
 877         {
 878         case 0: sendf(Client->Socket, "200 Item Refunded\n");   return ;
 879         default:
 880                 sendf(Client->Socket, "500 Dispense Error\n");
 881                 return;
 882         }
 883 }
 884
 885 void Server_Cmd_GIVE(tClient *Client, char *Args)
 886 {
 887         char    *recipient, *ammount, *reason;
 888          int    uid, iAmmount;
 889          int    thisUid;
 890
 891         // Parse arguments
 892         if( Server_int_ParseArgs(1, Args, &recipient, &ammount, &reason, NULL) ) {
 893                 sendf(Client->Socket, "407 GIVE takes only 3 arguments\n");
 894                 return ;
 895         }
 896
 897         // Check for authed
 898         if( !Client->bIsAuthed ) {
 899                 sendf(Client->Socket, "401 Not Authenticated\n");
 900                 return ;
 901         }
 902
 903         // Get recipient
 904         uid = Bank_GetAcctByName(recipient, 0);
 905         if( uid == -1 ) {
 906                 sendf(Client->Socket, "404 Invalid target user\n");
 907                 return ;
 908         }
 909
 910         // You can't alter an internal account
 911 //      if( Bank_GetFlags(uid) & USER_FLAG_INTERNAL ) {
 912 //              sendf(Client->Socket, "404 Invalid target user\n");
 913 //              return ;
 914 //      }
 915
 916         // Parse ammount
 917         iAmmount = atoi(ammount);
 918         if( iAmmount <= 0 ) {
 919                 sendf(Client->Socket, "407 Invalid Argument, ammount must be > zero\n");
 920                 return ;
 921         }
 922
 923         if( Client->EffectiveUID != -1 ) {
 924                 thisUid = Client->EffectiveUID;
 925         }
 926         else {
 927                 thisUid = Client->UID;
 928         }
 929
 930         // Do give
 931         switch( DispenseGive(Client->UID, thisUid, uid, iAmmount, reason) )
 932         {
 933         case 0:
 934                 sendf(Client->Socket, "200 Give OK\n");
 935                 return ;
 936         case 2:
 937                 sendf(Client->Socket, "402 Poor You\n");
 938                 return ;
 939         default:
 940                 sendf(Client->Socket, "500 Unknown error\n");
 941                 return ;
 942         }
 943 }
 944
 945 void Server_Cmd_DONATE(tClient *Client, char *Args)
 946 {
 947         char    *ammount, *reason;
 948          int    iAmmount;
 949          int    thisUid;
 950
 951         // Parse arguments
 952         if( Server_int_ParseArgs(1, Args, &ammount, &reason, NULL) ) {
 953                 sendf(Client->Socket, "407 DONATE takes 2 arguments\n");
 954                 return ;
 955         }
 956
 957         if( !Client->bIsAuthed ) {
 958                 sendf(Client->Socket, "401 Not Authenticated\n");
 959                 return ;
 960         }
 961
 962         // Parse ammount
 963         iAmmount = atoi(ammount);
 964         if( iAmmount <= 0 ) {
 965                 sendf(Client->Socket, "407 Invalid Argument, ammount must be > zero\n");
 966                 return ;
 967         }
 968
 969         // Handle effective users
 970         if( Client->EffectiveUID != -1 ) {
 971                 thisUid = Client->EffectiveUID;
 972         }
 973         else {
 974                 thisUid = Client->UID;
 975         }
 976
 977         // Do give
 978         switch( DispenseDonate(Client->UID, thisUid, iAmmount, reason) )
 979         {
 980         case 0:
 981                 sendf(Client->Socket, "200 Give OK\n");
 982                 return ;
 983         case 2:
 984                 sendf(Client->Socket, "402 Poor You\n");
 985                 return ;
 986         default:
 987                 sendf(Client->Socket, "500 Unknown error\n");
 988                 return ;
 989         }
 990 }
 991
 992 void Server_Cmd_ADD(tClient *Client, char *Args)
 993 {
 994         char    *user, *ammount, *reason;
 995          int    uid, iAmmount;
 996
 997         // Parse arguments
 998         if( Server_int_ParseArgs(1, Args, &user, &ammount, &reason, NULL) ) {
 999                 sendf(Client->Socket, "407 ADD takes 3 arguments\n");
1000                 return ;
1001         }
1002
1003         if( !Client->bIsAuthed ) {
1004                 sendf(Client->Socket, "401 Not Authenticated\n");
1005                 return ;
1006         }
1007
1008         // Check user permissions
1009         if( !(Bank_GetFlags(Client->UID) & (USER_FLAG_COKE|USER_FLAG_ADMIN))  ) {
1010                 sendf(Client->Socket, "403 Not in coke\n");
1011                 return ;
1012         }
1013
1014         #if !ROOT_CAN_ADD
1015         if( strcmp( Client->Username, "root" ) == 0 ) {
1016                 // Allow adding for new users
1017                 if( strcmp(reason, "treasurer: new user") != 0 ) {
1018                         sendf(Client->Socket, "403 Root may not add\n");
1019                         return ;
1020                 }
1021         }
1022         #endif
1023
1024         #if HACK_NO_REFUNDS
1025         if( strstr(reason, "refund") != NULL || strstr(reason, "misdispense") != NULL )
1026         {
1027                 sendf(Client->Socket, "499 Don't use `dispense acct` for refunds, use `dispense refund` (and `dispense -G` to get item IDs)\n");
1028                 return ;
1029         }
1030         #endif
1031
1032         // Get recipient
1033         uid = Bank_GetAcctByName(user, 0);
1034         if( uid == -1 ) {
1035                 sendf(Client->Socket, "404 Invalid user\n");
1036                 return ;
1037         }
1038
1039         // You can't alter an internal account
1040         if( !(Bank_GetFlags(Client->UID) & USER_FLAG_ADMIN) )
1041         {
1042                 if( Bank_GetFlags(uid) & USER_FLAG_INTERNAL ) {
1043                         sendf(Client->Socket, "404 Invalid user\n");
1044                         return ;
1045                 }
1046                 // TODO: Maybe disallow changes to disabled?
1047         }
1048
1049         // Parse ammount
1050         iAmmount = atoi(ammount);
1051         if( iAmmount == 0 && ammount[0] != '0' ) {
1052                 sendf(Client->Socket, "407 Invalid Argument\n");
1053                 return ;
1054         }
1055
1056         // Do give
1057         switch( DispenseAdd(Client->UID, uid, iAmmount, reason) )
1058         {
1059         case 0:
1060                 sendf(Client->Socket, "200 Add OK\n");
1061                 return ;
1062         case 2:
1063                 sendf(Client->Socket, "402 Poor Guy\n");
1064                 return ;
1065         default:
1066                 sendf(Client->Socket, "500 Unknown error\n");
1067                 return ;
1068         }
1069 }
1070
1071 void Server_Cmd_SET(tClient *Client, char *Args)
1072 {
1073         char    *user, *ammount, *reason;
1074          int    uid, iAmmount;
1075
1076         // Parse arguments
1077         if( Server_int_ParseArgs(1, Args, &user, &ammount, &reason, NULL) ) {
1078                 sendf(Client->Socket, "407 SET takes 3 arguments\n");
1079                 return ;
1080         }
1081
1082         if( !Client->bIsAuthed ) {
1083                 sendf(Client->Socket, "401 Not Authenticated\n");
1084                 return ;
1085         }
1086
1087         // Check user permissions
1088         if( !(Bank_GetFlags(Client->UID) & USER_FLAG_ADMIN)  ) {
1089                 sendf(Client->Socket, "403 Not an admin\n");
1090                 return ;
1091         }
1092
1093         // Get recipient
1094         uid = Bank_GetAcctByName(user, 0);
1095         if( uid == -1 ) {
1096                 sendf(Client->Socket, "404 Invalid user\n");
1097                 return ;
1098         }
1099
1100         // Parse ammount
1101         iAmmount = atoi(ammount);
1102         if( iAmmount == 0 && ammount[0] != '0' ) {
1103                 sendf(Client->Socket, "407 Invalid Argument\n");
1104                 return ;
1105         }
1106
1107         // Do give
1108         switch( DispenseSet(Client->UID, uid, iAmmount, reason) )
1109         {
1110         case 0:
1111                 sendf(Client->Socket, "200 Add OK\n");
1112                 return ;
1113         case 2:
1114                 sendf(Client->Socket, "402 Poor Guy\n");
1115                 return ;
1116         default:
1117                 sendf(Client->Socket, "500 Unknown error\n");
1118                 return ;
1119         }
1120 }
1121
1122 void Server_Cmd_ENUMUSERS(tClient *Client, char *Args)
1123 {
1124          int    i, numRet = 0;
1125         tAcctIterator   *it;
1126          int    maxBal = INT_MAX, minBal = INT_MIN;
1127          int    flagMask = 0, flagVal = 0;
1128          int    sort = BANK_ITFLAG_SORT_NAME;
1129         time_t  lastSeenAfter=0, lastSeenBefore=0;
1130
1131          int    flags;  // Iterator flags
1132          int    balValue;       // Balance value for iterator
1133         time_t  timeValue;      // Time value for iterator
1134
1135         // Parse arguments
1136         if( Args && strlen(Args) )
1137         {
1138                 char    *space = Args, *type, *val;
1139                 do
1140                 {
1141                         type = space;
1142                         while(*type == ' ')     type ++;
1143                         // Get next space
1144                         space = strchr(space, ' ');
1145                         if(space)       *space = '\0';
1146
1147                         // Get type
1148                         val = strchr(type, ':');
1149                         if( val ) {
1150                                 *val = '\0';
1151                                 val ++;
1152
1153                                 // Types
1154                                 // - Minium Balance
1155                                 if( strcmp(type, "min_balance") == 0 ) {
1156                                         minBal = atoi(val);
1157                                 }
1158                                 // - Maximum Balance
1159                                 else if( strcmp(type, "max_balance") == 0 ) {
1160                                         maxBal = atoi(val);
1161                                 }
1162                                 // - Flags
1163                                 else if( strcmp(type, "flags") == 0 ) {
1164                                         if( Server_int_ParseFlags(Client, val, &flagMask, &flagVal) )
1165                                                 return ;
1166                                 }
1167                                 // - Last seen before timestamp
1168                                 else if( strcmp(type, "last_seen_before") == 0 ) {
1169                                         lastSeenAfter = atoll(val);
1170                                 }
1171                                 // - Last seen after timestamp
1172                                 else if( strcmp(type, "last_seen_after") == 0 ) {
1173                                         lastSeenAfter = atoll(val);
1174                                 }
1175                                 // - Sorting
1176                                 else if( strcmp(type, "sort") == 0 ) {
1177                                         char    *dash = strchr(val, '-');
1178                                         if( dash ) {
1179                                                 *dash = '\0';
1180                                                 dash ++;
1181                                         }
1182                                         if( strcmp(val, "name") == 0 ) {
1183                                                 sort = BANK_ITFLAG_SORT_NAME;
1184                                         }
1185                                         else if( strcmp(val, "balance") == 0 ) {
1186                                                 sort = BANK_ITFLAG_SORT_BAL;
1187                                         }
1188                                         else if( strcmp(val, "lastseen") == 0 ) {
1189                                                 sort = BANK_ITFLAG_SORT_LASTSEEN;
1190                                         }
1191                                         else {
1192                                                 sendf(Client->Socket, "407 Unknown sort field ('%s')\n", val);
1193                                                 return ;
1194                                         }
1195                                         // Handle sort direction
1196                                         if( dash ) {
1197                                                 if( strcmp(dash, "desc") == 0 ) {
1198                                                         sort |= BANK_ITFLAG_REVSORT;
1199                                                 }
1200                                                 else {
1201                                                         sendf(Client->Socket, "407 Unknown sort direction '%s'\n", dash);
1202                                                         return ;
1203                                                 }
1204                                                 dash[-1] = '-';
1205                                         }
1206                                 }
1207                                 else {
1208                                         sendf(Client->Socket, "407 Unknown argument to ENUM_USERS '%s:%s'\n", type, val);
1209                                         return ;
1210                                 }
1211
1212                                 val[-1] = ':';
1213                         }
1214                         else {
1215                                 sendf(Client->Socket, "407 Unknown argument to ENUM_USERS '%s'\n", type);
1216                                 return ;
1217                         }
1218
1219                         // Eat whitespace
1220                         if( space ) {
1221                                 *space = ' ';   // Repair (to be nice)
1222                                 space ++;
1223                                 while(*space == ' ')    space ++;
1224                         }
1225                 }       while(space);
1226         }
1227
1228         // Create iterator
1229         if( maxBal != INT_MAX ) {
1230                 flags = sort|BANK_ITFLAG_MAXBALANCE;
1231                 balValue = maxBal;
1232         }
1233         else if( minBal != INT_MIN ) {
1234                 flags = sort|BANK_ITFLAG_MINBALANCE;
1235                 balValue = minBal;
1236         }
1237         else {
1238                 flags = sort;
1239                 balValue = 0;
1240         }
1241         if( lastSeenBefore ) {
1242                 timeValue = lastSeenBefore;
1243                 flags |= BANK_ITFLAG_SEENBEFORE;
1244         }
1245         else if( lastSeenAfter ) {
1246                 timeValue = lastSeenAfter;
1247                 flags |= BANK_ITFLAG_SEENAFTER;
1248         }
1249         else {
1250                 timeValue = 0;
1251         }
1252         it = Bank_Iterator(flagMask, flagVal, flags, balValue, timeValue);
1253
1254         // Get return number
1255         while( (i = Bank_IteratorNext(it)) != -1 )
1256         {
1257                 int bal = Bank_GetBalance(i);
1258
1259                 if( bal == INT_MIN )    continue;
1260
1261                 if( bal < minBal )      continue;
1262                 if( bal > maxBal )      continue;
1263
1264                 numRet ++;
1265         }
1266
1267         Bank_DelIterator(it);
1268
1269         // Send count
1270         sendf(Client->Socket, "201 Users %i\n", numRet);
1271
1272
1273         // Create iterator
1274         it = Bank_Iterator(flagMask, flagVal, flags, balValue, timeValue);
1275
1276         while( (i = Bank_IteratorNext(it)) != -1 )
1277         {
1278                 int bal = Bank_GetBalance(i);
1279
1280                 if( bal == INT_MIN )    continue;
1281
1282                 if( bal < minBal )      continue;
1283                 if( bal > maxBal )      continue;
1284
1285                 _SendUserInfo(Client, i);
1286         }
1287
1288         Bank_DelIterator(it);
1289
1290         sendf(Client->Socket, "200 List End\n");
1291 }
1292
1293 void Server_Cmd_USERINFO(tClient *Client, char *Args)
1294 {
1295          int    uid;
1296         char    *user;
1297
1298         // Parse arguments
1299         if( Server_int_ParseArgs(0, Args, &user, NULL) ) {
1300                 sendf(Client->Socket, "407 USER_INFO takes 1 argument\n");
1301                 return ;
1302         }
1303
1304         if( giDebugLevel )      Debug(Client, "User Info '%s'", user);
1305
1306         // Get recipient
1307         uid = Bank_GetAcctByName(user, 0);
1308
1309         if( giDebugLevel >= 2 ) Debug(Client, "uid = %i", uid);
1310         if( uid == -1 ) {
1311                 sendf(Client->Socket, "404 Invalid user\n");
1312                 return ;
1313         }
1314
1315         _SendUserInfo(Client, uid);
1316 }
1317
1318 void _SendUserInfo(tClient *Client, int UserID)
1319 {
1320         char    *type, *disabled="", *door="";
1321          int    flags = Bank_GetFlags(UserID);
1322
1323         if( flags & USER_FLAG_INTERNAL ) {
1324                 type = "internal";
1325         }
1326         else if( flags & USER_FLAG_COKE ) {
1327                 if( flags & USER_FLAG_ADMIN )
1328                         type = "coke,admin";
1329                 else
1330                         type = "coke";
1331         }
1332         else if( flags & USER_FLAG_ADMIN ) {
1333                 type = "admin";
1334         }
1335         else {
1336                 type = "user";
1337         }
1338
1339         if( flags & USER_FLAG_DISABLED )
1340                 disabled = ",disabled";
1341         if( flags & USER_FLAG_DOORGROUP )
1342                 door = ",door";
1343
1344         // TODO: User flags/type
1345         sendf(
1346                 Client->Socket, "202 User %s %i %s%s%s\n",
1347                 Bank_GetAcctName(UserID), Bank_GetBalance(UserID),
1348                 type, disabled, door
1349                 );
1350 }
1351
1352 void Server_Cmd_USERADD(tClient *Client, char *Args)
1353 {
1354         char    *username;
1355
1356         // Parse arguments
1357         if( Server_int_ParseArgs(0, Args, &username, NULL) ) {
1358                 sendf(Client->Socket, "407 USER_ADD takes 1 argument\n");
1359                 return ;
1360         }
1361
1362         // Check authentication
1363         if( !Client->bIsAuthed ) {
1364                 sendf(Client->Socket, "401 Not Authenticated\n");
1365                 return ;
1366         }
1367
1368         // Check permissions
1369         if( !(Bank_GetFlags(Client->UID) & USER_FLAG_ADMIN) ) {
1370                 sendf(Client->Socket, "403 Not a coke admin\n");
1371                 return ;
1372         }
1373
1374         // Try to create user
1375         if( Bank_CreateAcct(username) == -1 ) {
1376                 sendf(Client->Socket, "404 User exists\n");
1377                 return ;
1378         }
1379
1380         {
1381                 char    *thisName = Bank_GetAcctName(Client->UID);
1382                 Log_Info("Account '%s' created by '%s'", username, thisName);
1383                 free(thisName);
1384         }
1385
1386         sendf(Client->Socket, "200 User Added\n");
1387 }
1388
1389 void Server_Cmd_USERFLAGS(tClient *Client, char *Args)
1390 {
1391         char    *username, *flags, *reason=NULL;
1392          int    mask=0, value=0;
1393          int    uid;
1394
1395         // Parse arguments
1396         if( Server_int_ParseArgs(1, Args, &username, &flags, &reason, NULL) ) {
1397                 if( !flags ) {
1398                         sendf(Client->Socket, "407 USER_FLAGS takes at least 2 arguments\n");
1399                         return ;
1400                 }
1401                 reason = "";
1402         }
1403
1404         // Check authentication
1405         if( !Client->bIsAuthed ) {
1406                 sendf(Client->Socket, "401 Not Authenticated\n");
1407                 return ;
1408         }
1409
1410         // Check permissions
1411         if( !(Bank_GetFlags(Client->UID) & USER_FLAG_ADMIN) ) {
1412                 sendf(Client->Socket, "403 Not a coke admin\n");
1413                 return ;
1414         }
1415
1416         // Get UID
1417         uid = Bank_GetAcctByName(username, 0);
1418         if( uid == -1 ) {
1419                 sendf(Client->Socket, "404 User '%s' not found\n", username);
1420                 return ;
1421         }
1422
1423         // Parse flags
1424         if( Server_int_ParseFlags(Client, flags, &mask, &value) )
1425                 return ;
1426
1427         if( giDebugLevel )
1428                 Debug(Client, "Set %i(%s) flags to %x (masked %x)\n",
1429                         uid, username, mask, value);
1430
1431         // Apply flags
1432         Bank_SetFlags(uid, mask, value);
1433
1434         // Log the change
1435         Log_Info("Updated '%s' with flag set '%s' by '%s' - Reason: %s",
1436                 username, flags, Client->Username, reason);
1437
1438         // Return OK
1439         sendf(Client->Socket, "200 User Updated\n");
1440 }
1441
1442 void Server_Cmd_UPDATEITEM(tClient *Client, char *Args)
1443 {
1444         char    *itemname, *price_str, *description;
1445          int    price;
1446         tItem   *item;
1447
1448         if( Server_int_ParseArgs(1, Args, &itemname, &price_str, &description, NULL) ) {
1449                 sendf(Client->Socket, "407 UPDATE_ITEM takes 3 arguments\n");
1450                 return ;
1451         }
1452
1453         if( !Client->bIsAuthed ) {
1454                 sendf(Client->Socket, "401 Not Authenticated\n");
1455                 return ;
1456         }
1457
1458         // Check user permissions
1459         if( !(Bank_GetFlags(Client->UID) & (USER_FLAG_COKE|USER_FLAG_ADMIN))  ) {
1460                 sendf(Client->Socket, "403 Not in coke\n");
1461                 return ;
1462         }
1463
1464         item = _GetItemFromString(itemname);
1465         if( !item ) {
1466                 // TODO: Create item?
1467                 sendf(Client->Socket, "406 Bad Item ID\n");
1468                 return ;
1469         }
1470
1471         price = atoi(price_str);
1472         if( price <= 0 && price_str[0] != '0' ) {
1473                 sendf(Client->Socket, "407 Invalid price set\n");
1474         }
1475
1476         switch( DispenseUpdateItem( Client->UID, item, description, price ) )
1477         {
1478         case 0:
1479                 // Return OK
1480                 sendf(Client->Socket, "200 Item updated\n");
1481                 break;
1482         default:
1483                 break;
1484         }
1485 }
1486
1487 // --- INTERNAL HELPERS ---
1488 void Debug(tClient *Client, const char *Format, ...)
1489 {
1490         va_list args;
1491         //printf("%010i [%i] ", (int)time(NULL), Client->ID);
1492         printf("[%i] ", Client->ID);
1493         va_start(args, Format);
1494         vprintf(Format, args);
1495         va_end(args);
1496         printf("\n");
1497 }
1498
1499 int sendf(int Socket, const char *Format, ...)
1500 {
1501         va_list args;
1502          int    len;
1503
1504         va_start(args, Format);
1505         len = vsnprintf(NULL, 0, Format, args);
1506         va_end(args);
1507
1508         {
1509                 char    buf[len+1];
1510                 va_start(args, Format);
1511                 vsnprintf(buf, len+1, Format, args);
1512                 va_end(args);
1513
1514                 #if DEBUG_TRACE_CLIENT
1515                 printf("sendf: %s", buf);
1516                 #endif
1517
1518                 return send(Socket, buf, len, 0);
1519         }
1520 }
1521
1522 // Takes a series of char *'s in
1523 /**
1524  * \brief Parse space-separated entries into
1525  */
1526 int Server_int_ParseArgs(int bUseLongLast, char *ArgStr, ...)
1527 {
1528         va_list args;
1529         char    savedChar;
1530         char    **dest;
1531         va_start(args, ArgStr);
1532
1533         // Check for null
1534         if( !ArgStr )
1535         {
1536                 while( (dest = va_arg(args, char **)) )
1537                         *dest = NULL;
1538                 va_end(args);
1539                 return 1;
1540         }
1541
1542         savedChar = *ArgStr;
1543
1544         while( (dest = va_arg(args, char **)) )
1545         {
1546                 // Trim leading spaces
1547                 while( *ArgStr == ' ' || *ArgStr == '\t' )
1548                         ArgStr ++;
1549
1550                 // ... oops, not enough arguments
1551                 if( *ArgStr == '\0' )
1552                 {
1553                         // NULL unset arguments
1554                         do {
1555                                 *dest = NULL;
1556                         }       while( (dest = va_arg(args, char **)) );
1557                 va_end(args);
1558                         return -1;
1559                 }
1560
1561                 if( *ArgStr == '"' )
1562                 {
1563                         ArgStr ++;
1564                         *dest = ArgStr;
1565                         // Read until quote
1566                         while( *ArgStr && *ArgStr != '"' )
1567                                 ArgStr ++;
1568                 }
1569                 else
1570                 {
1571                         // Set destination
1572                         *dest = ArgStr;
1573                         // Read until a space
1574                         while( *ArgStr && *ArgStr != ' ' && *ArgStr != '\t' )
1575                                 ArgStr ++;
1576                 }
1577                 savedChar = *ArgStr;    // savedChar is used to un-mangle the last string
1578                 *ArgStr = '\0';
1579                 ArgStr ++;
1580         }
1581         va_end(args);
1582
1583         // Oops, extra arguments, and greedy not set
1584         if( (savedChar == ' ' || savedChar == '\t') && !bUseLongLast ) {
1585                 return -1;
1586         }
1587
1588         // Un-mangle last
1589         if(bUseLongLast) {
1590                 ArgStr --;
1591                 *ArgStr = savedChar;
1592         }
1593
1594         return 0;       // Success!
1595 }
1596
1597 int Server_int_ParseFlags(tClient *Client, const char *Str, int *Mask, int *Value)
1598 {
1599         struct {
1600                 const char      *Name;
1601                  int    Mask;
1602                  int    Value;
1603         }       cFLAGS[] = {
1604                  {"disabled", USER_FLAG_DISABLED, USER_FLAG_DISABLED}
1605                 ,{"door", USER_FLAG_DOORGROUP, USER_FLAG_DOORGROUP}
1606                 ,{"coke", USER_FLAG_COKE, USER_FLAG_COKE}
1607                 ,{"admin", USER_FLAG_ADMIN, USER_FLAG_ADMIN}
1608                 ,{"internal", USER_FLAG_INTERNAL, USER_FLAG_INTERNAL}
1609         };
1610         const int       ciNumFlags = sizeof(cFLAGS)/sizeof(cFLAGS[0]);
1611
1612         char    *space;
1613
1614         *Mask = 0;
1615         *Value = 0;
1616
1617         do {
1618                  int    bRemove = 0;
1619                  int    i;
1620                  int    len;
1621
1622                 while( *Str == ' ' )    Str ++; // Eat whitespace
1623                 space = strchr(Str, ',');       // Find the end of the flag
1624                 if(space)
1625                         len = space - Str;
1626                 else
1627                         len = strlen(Str);
1628
1629                 // Check for inversion/removal
1630                 if( *Str == '!' || *Str == '-' ) {
1631                         bRemove = 1;
1632                         Str ++;
1633                 }
1634                 else if( *Str == '+' ) {
1635                         Str ++;
1636                 }
1637
1638                 // Check flag values
1639                 for( i = 0; i < ciNumFlags; i ++ )
1640                 {
1641                         if( strncmp(Str, cFLAGS[i].Name, len) == 0 ) {
1642                                 *Mask |= cFLAGS[i].Mask;
1643                                 *Value &= ~cFLAGS[i].Mask;
1644                                 if( !bRemove )
1645                                         *Value |= cFLAGS[i].Value;
1646                                 break;
1647                         }
1648                 }
1649
1650                 // Error check
1651                 if( i == ciNumFlags ) {
1652                         char    val[len+1];
1653                         strncpy(val, Str, len+1);
1654                         sendf(Client->Socket, "407 Unknown flag value '%s'\n", val);
1655                         return -1;
1656                 }
1657
1658                 Str = space + 1;
1659         } while(space);
1660
1661         return 0;
1662 }