src/server/server.c

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