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         //
 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 //              printf("command=%s, args=%s\n", command, args);
 357                 // Is this an error? (just ignore for now)
 358                 //args = "";
 359         }
 360
 361
 362         // Find command
 363         for( i = 0; i < NUM_COMMANDS; i++ )
 364         {
 365                 if(strcmp(command, gaServer_Commands[i].Name) == 0) {
 366                         if( giDebugLevel >= 2 )
 367                                 Debug(Client, "CMD %s - \"%s\"", command, args);
 368                         gaServer_Commands[i].Function(Client, args);
 369                         return ;
 370                 }
 371         }
 372
 373         sendf(Client->Socket, "400 Unknown Command\n");
 374 }
 375
 376 // ---
 377 // Commands
 378 // ---
 379 /**
 380  * \brief Set client username
 381  *
 382  * Usage: USER <username>
 383  */
 384 void Server_Cmd_USER(tClient *Client, char *Args)
 385 {
 386         char    *username;
 387
 388         if( Server_int_ParseArgs(0, Args, &username, NULL) )
 389         {
 390                 sendf(Client->Socket, "407 USER takes 1 argument\n");
 391                 return ;
 392         }
 393
 394         // Debug!
 395         if( giDebugLevel )
 396                 Debug(Client, "Authenticating as '%s'", username);
 397
 398         // Save username
 399         if(Client->Username)
 400                 free(Client->Username);
 401         Client->Username = strdup(username);
 402
 403         #if USE_SALT
 404         // Create a salt (that changes if the username is changed)
 405         // Yes, I know, I'm a little paranoid, but who isn't?
 406         Client->Salt[0] = 0x21 + (rand()&0x3F);
 407         Client->Salt[1] = 0x21 + (rand()&0x3F);
 408         Client->Salt[2] = 0x21 + (rand()&0x3F);
 409         Client->Salt[3] = 0x21 + (rand()&0x3F);
 410         Client->Salt[4] = 0x21 + (rand()&0x3F);
 411         Client->Salt[5] = 0x21 + (rand()&0x3F);
 412         Client->Salt[6] = 0x21 + (rand()&0x3F);
 413         Client->Salt[7] = 0x21 + (rand()&0x3F);
 414
 415         // TODO: Also send hash type to use, (SHA1 or crypt according to [DAA])
 416         sendf(Client->Socket, "100 SALT %s\n", Client->Salt);
 417         #else
 418         sendf(Client->Socket, "100 User Set\n");
 419         #endif
 420 }
 421
 422 /**
 423  * \brief Authenticate as a user
 424  *
 425  * Usage: PASS <hash>
 426  */
 427 void Server_Cmd_PASS(tClient *Client, char *Args)
 428 {
 429         char    *passhash;
 430          int    flags;
 431
 432         if( Server_int_ParseArgs(0, Args, &passhash, NULL) )
 433         {
 434                 sendf(Client->Socket, "407 PASS takes 1 argument\n");
 435                 return ;
 436         }
 437
 438         // Pass on to cokebank
 439         Client->UID = Bank_GetUserAuth(Client->Salt, Client->Username, passhash);
 440
 441         if( Client->UID == -1 ) {
 442                 sendf(Client->Socket, "401 Auth Failure\n");
 443                 return ;
 444         }
 445
 446         flags = Bank_GetFlags(Client->UID);
 447         if( flags & USER_FLAG_DISABLED ) {
 448                 Client->UID = -1;
 449                 sendf(Client->Socket, "403 Account Disabled\n");
 450                 return ;
 451         }
 452         if( flags & USER_FLAG_INTERNAL ) {
 453                 Client->UID = -1;
 454                 sendf(Client->Socket, "403 Internal account\n");
 455                 return ;
 456         }
 457
 458         Client->bIsAuthed = 1;
 459         sendf(Client->Socket, "200 Auth OK\n");
 460 }
 461
 462 /**
 463  * \brief Authenticate as a user without a password
 464  *
 465  * Usage: AUTOAUTH <user>
 466  */
 467 void Server_Cmd_AUTOAUTH(tClient *Client, char *Args)
 468 {
 469         char    *username;
 470          int    userflags;
 471
 472         if( Server_int_ParseArgs(0, Args, &username, NULL) )
 473         {
 474                 sendf(Client->Socket, "407 AUTOAUTH takes 1 argument\n");
 475                 return ;
 476         }
 477
 478         // Check if trusted
 479         if( !Client->bIsTrusted ) {
 480                 if(giDebugLevel)
 481                         Debug(Client, "Untrusted client attempting to AUTOAUTH");
 482                 sendf(Client->Socket, "401 Untrusted\n");
 483                 return ;
 484         }
 485
 486         // Get UID
 487         Client->UID = Bank_GetAcctByName( username, 0 );
 488         if( Client->UID < 0 ) {
 489                 if(giDebugLevel)
 490                         Debug(Client, "Unknown user '%s'", username);
 491                 sendf(Client->Socket, "403 Auth Failure\n");
 492                 return ;
 493         }
 494
 495         userflags = Bank_GetFlags(Client->UID);
 496         // You can't be an internal account
 497         if( userflags & USER_FLAG_INTERNAL ) {
 498                 if(giDebugLevel)
 499                         Debug(Client, "Autoauth as '%s', not allowed", username);
 500                 Client->UID = -1;
 501                 sendf(Client->Socket, "403 Account is internal\n");
 502                 return ;
 503         }
 504
 505         // Disabled accounts
 506         if( userflags & USER_FLAG_DISABLED ) {
 507                 Client->UID = -1;
 508                 sendf(Client->Socket, "403 Account disabled\n");
 509                 return ;
 510         }
 511
 512         Client->bIsAuthed = 1;
 513
 514         if(giDebugLevel)
 515                 Debug(Client, "Auto authenticated as '%s' (%i)", username, Client->UID);
 516
 517         sendf(Client->Socket, "200 Auth OK\n");
 518 }
 519
 520 /**
 521  * \brief Set effective user
 522  */
 523 void Server_Cmd_SETEUSER(tClient *Client, char *Args)
 524 {
 525         char    *username;
 526          int    eUserFlags, userFlags;
 527
 528         if( Server_int_ParseArgs(0, Args, &username, NULL) )
 529         {
 530                 sendf(Client->Socket, "407 SETEUSER takes 1 argument\n");
 531                 return ;
 532         }
 533
 534         if( !strlen(Args) ) {
 535                 sendf(Client->Socket, "407 SETEUSER expects an argument\n");
 536                 return ;
 537         }
 538
 539         // Check user permissions
 540         userFlags = Bank_GetFlags(Client->UID);
 541         if( !(userFlags & (USER_FLAG_COKE|USER_FLAG_ADMIN)) ) {
 542                 sendf(Client->Socket, "403 Not in coke\n");
 543                 return ;
 544         }
 545
 546         // Set id
 547         Client->EffectiveUID = Bank_GetAcctByName(username, 0);
 548         if( Client->EffectiveUID == -1 ) {
 549                 sendf(Client->Socket, "404 User not found\n");
 550                 return ;
 551         }
 552
 553         // You can't be an internal account
 554         if( !(userFlags & USER_FLAG_ADMIN) )
 555         {
 556                 eUserFlags = Bank_GetFlags(Client->EffectiveUID);
 557                 if( eUserFlags & USER_FLAG_INTERNAL ) {
 558                         Client->EffectiveUID = -1;
 559                         sendf(Client->Socket, "404 User not found\n");
 560                         return ;
 561                 }
 562                 // Disabled only avaliable to admins
 563                 if( eUserFlags & USER_FLAG_DISABLED ) {
 564                         Client->EffectiveUID = -1;
 565                         sendf(Client->Socket, "403 Account disabled\n");
 566                         return ;
 567                 }
 568         }
 569
 570         sendf(Client->Socket, "200 User set\n");
 571 }
 572
 573 /**
 574  * \brief Send an item status to the client
 575  * \param Client        Who to?
 576  * \param Item  Item to send
 577  */
 578 void Server_int_SendItem(tClient *Client, tItem *Item)
 579 {
 580         char    *status = "avail";
 581
 582         if( Item->Handler->CanDispense )
 583         {
 584                 switch(Item->Handler->CanDispense(Client->UID, Item->ID))
 585                 {
 586                 case  0:        status = "avail";       break;
 587                 case  1:        status = "sold";        break;
 588                 default:
 589                 case -1:        status = "error";       break;
 590                 }
 591         }
 592
 593         // KNOWN HACK: Naming a slot 'dead' disables it
 594         if( strcmp(Item->Name, "dead") == 0 )
 595                 status = "sold";        // Another status?
 596
 597         sendf(Client->Socket,
 598                 "202 Item %s:%i %s %i %s\n",
 599                 Item->Handler->Name, Item->ID, status, Item->Price, Item->Name
 600                 );
 601 }
 602
 603 /**
 604  * \brief Enumerate the items that the server knows about
 605  */
 606 void Server_Cmd_ENUMITEMS(tClient *Client, char *Args)
 607 {
 608          int    i, count;
 609
 610         if( Args != NULL && strlen(Args) ) {
 611                 sendf(Client->Socket, "407 ENUM_ITEMS takes no arguments\n");
 612                 return ;
 613         }
 614
 615         // Count shown items
 616         count = 0;
 617         for( i = 0; i < giNumItems; i ++ ) {
 618                 if( gaItems[i].bHidden )        continue;
 619                 count ++;
 620         }
 621
 622         sendf(Client->Socket, "201 Items %i\n", count);
 623
 624         for( i = 0; i < giNumItems; i ++ ) {
 625                 if( gaItems[i].bHidden )        continue;
 626                 Server_int_SendItem( Client, &gaItems[i] );
 627         }
 628
 629         sendf(Client->Socket, "200 List end\n");
 630 }
 631
 632 tItem *_GetItemFromString(char *String)
 633 {
 634         tHandler        *handler;
 635         char    *type = String;
 636         char    *colon = strchr(String, ':');
 637          int    num, i;
 638
 639         if( !colon ) {
 640                 return NULL;
 641         }
 642
 643         num = atoi(colon+1);
 644         *colon = '\0';
 645
 646         // Find handler
 647         handler = NULL;
 648         for( i = 0; i < giNumHandlers; i ++ )
 649         {
 650                 if( strcmp(gaHandlers[i]->Name, type) == 0) {
 651                         handler = gaHandlers[i];
 652                         break;
 653                 }
 654         }
 655         if( !handler ) {
 656                 return NULL;
 657         }
 658
 659         // Find item
 660         for( i = 0; i < giNumItems; i ++ )
 661         {
 662                 if( gaItems[i].Handler != handler )     continue;
 663                 if( gaItems[i].ID != num )      continue;
 664                 return &gaItems[i];
 665         }
 666         return NULL;
 667 }
 668
 669 /**
 670  * \brief Fetch information on a specific item
 671  */
 672 void Server_Cmd_ITEMINFO(tClient *Client, char *Args)
 673 {
 674         tItem   *item;
 675         char    *itemname;
 676
 677         if( Server_int_ParseArgs(0, Args, &itemname, NULL) ) {
 678                 sendf(Client->Socket, "407 ITEMINFO takes 1 argument\n");
 679                 return ;
 680         }
 681         item = _GetItemFromString(Args);
 682
 683         if( !item ) {
 684                 sendf(Client->Socket, "406 Bad Item ID\n");
 685                 return ;
 686         }
 687
 688         Server_int_SendItem( Client, item );
 689 }
 690
 691 void Server_Cmd_DISPENSE(tClient *Client, char *Args)
 692 {
 693         tItem   *item;
 694          int    ret;
 695          int    uid;
 696         char    *itemname;
 697
 698         if( Server_int_ParseArgs(0, Args, &itemname, NULL) ) {
 699                 sendf(Client->Socket, "407 DISPENSE takes only 1 argument\n");
 700                 return ;
 701         }
 702
 703         if( !Client->bIsAuthed ) {
 704                 sendf(Client->Socket, "401 Not Authenticated\n");
 705                 return ;
 706         }
 707
 708         item = _GetItemFromString(itemname);
 709         if( !item ) {
 710                 sendf(Client->Socket, "406 Bad Item ID\n");
 711                 return ;
 712         }
 713
 714         if( Client->EffectiveUID != -1 ) {
 715                 uid = Client->EffectiveUID;
 716         }
 717         else {
 718                 uid = Client->UID;
 719         }
 720
 721         switch( ret = DispenseItem( Client->UID, uid, item ) )
 722         {
 723         case 0: sendf(Client->Socket, "200 Dispense OK\n");     return ;
 724         case 1: sendf(Client->Socket, "501 Unable to dispense\n");      return ;
 725         case 2: sendf(Client->Socket, "402 Poor You\n");        return ;
 726         default:
 727                 sendf(Client->Socket, "500 Dispense Error\n");
 728                 return ;
 729         }
 730 }
 731
 732 void Server_Cmd_REFUND(tClient *Client, char *Args)
 733 {
 734         tItem   *item;
 735          int    uid, price_override = 0;
 736         char    *username, *itemname, *price_str;
 737
 738         if( Server_int_ParseArgs(0, Args, &username, &itemname, &price_str, NULL) ) {
 739                 if( !itemname || price_str ) {
 740                         sendf(Client->Socket, "407 REFUND takes 2 or 3 arguments\n");
 741                         return ;
 742                 }
 743         }
 744
 745         if( !Client->bIsAuthed ) {
 746                 sendf(Client->Socket, "401 Not Authenticated\n");
 747                 return ;
 748         }
 749
 750         // Check user permissions
 751         if( !(Bank_GetFlags(Client->UID) & (USER_FLAG_COKE|USER_FLAG_ADMIN))  ) {
 752                 sendf(Client->Socket, "403 Not in coke\n");
 753                 return ;
 754         }
 755
 756         uid = Bank_GetAcctByName(username, 0);
 757         if( uid == -1 ) {
 758                 sendf(Client->Socket, "404 Unknown user\n");
 759                 return ;
 760         }
 761
 762         item = _GetItemFromString(itemname);
 763         if( !item ) {
 764                 sendf(Client->Socket, "406 Bad Item ID\n");
 765                 return ;
 766         }
 767
 768         if( price_str )
 769                 price_override = atoi(price_str);
 770
 771         switch( DispenseRefund( Client->UID, uid, item, price_override ) )
 772         {
 773         case 0: sendf(Client->Socket, "200 Item Refunded\n");   return ;
 774         default:
 775                 sendf(Client->Socket, "500 Dispense Error\n");
 776                 return;
 777         }
 778 }
 779
 780 void Server_Cmd_GIVE(tClient *Client, char *Args)
 781 {
 782         char    *recipient, *ammount, *reason;
 783          int    uid, iAmmount;
 784          int    thisUid;
 785
 786         // Parse arguments
 787         if( Server_int_ParseArgs(1, Args, &recipient, &ammount, &reason, NULL) ) {
 788                 sendf(Client->Socket, "407 GIVE takes only 3 arguments\n");
 789                 return ;
 790         }
 791         // Check for authed
 792         if( !Client->bIsAuthed ) {
 793                 sendf(Client->Socket, "401 Not Authenticated\n");
 794                 return ;
 795         }
 796
 797         // Get recipient
 798         uid = Bank_GetAcctByName(recipient, 0);
 799         if( uid == -1 ) {
 800                 sendf(Client->Socket, "404 Invalid target user\n");
 801                 return ;
 802         }
 803
 804         // You can't alter an internal account
 805 //      if( Bank_GetFlags(uid) & USER_FLAG_INTERNAL ) {
 806 //              sendf(Client->Socket, "404 Invalid target user\n");
 807 //              return ;
 808 //      }
 809
 810         // Parse ammount
 811         iAmmount = atoi(ammount);
 812         if( iAmmount <= 0 ) {
 813                 sendf(Client->Socket, "407 Invalid Argument, ammount must be > zero\n");
 814                 return ;
 815         }
 816
 817         if( Client->EffectiveUID != -1 ) {
 818                 thisUid = Client->EffectiveUID;
 819         }
 820         else {
 821                 thisUid = Client->UID;
 822         }
 823
 824         // Do give
 825         switch( DispenseGive(Client->UID, thisUid, uid, iAmmount, reason) )
 826         {
 827         case 0:
 828                 sendf(Client->Socket, "200 Give OK\n");
 829                 return ;
 830         case 2:
 831                 sendf(Client->Socket, "402 Poor You\n");
 832                 return ;
 833         default:
 834                 sendf(Client->Socket, "500 Unknown error\n");
 835                 return ;
 836         }
 837 }
 838
 839 void Server_Cmd_DONATE(tClient *Client, char *Args)
 840 {
 841         char    *ammount, *reason;
 842          int    iAmmount;
 843          int    thisUid;
 844
 845         // Parse arguments
 846         if( Server_int_ParseArgs(1, Args, &ammount, &reason, NULL) ) {
 847                 sendf(Client->Socket, "407 DONATE takes 2 arguments\n");
 848                 return ;
 849         }
 850
 851         if( !Client->bIsAuthed ) {
 852                 sendf(Client->Socket, "401 Not Authenticated\n");
 853                 return ;
 854         }
 855
 856         // Parse ammount
 857         iAmmount = atoi(ammount);
 858         if( iAmmount <= 0 ) {
 859                 sendf(Client->Socket, "407 Invalid Argument, ammount must be > zero\n");
 860                 return ;
 861         }
 862
 863         // Handle effective users
 864         if( Client->EffectiveUID != -1 ) {
 865                 thisUid = Client->EffectiveUID;
 866         }
 867         else {
 868                 thisUid = Client->UID;
 869         }
 870
 871         // Do give
 872         switch( DispenseDonate(Client->UID, thisUid, iAmmount, reason) )
 873         {
 874         case 0:
 875                 sendf(Client->Socket, "200 Give OK\n");
 876                 return ;
 877         case 2:
 878                 sendf(Client->Socket, "402 Poor You\n");
 879                 return ;
 880         default:
 881                 sendf(Client->Socket, "500 Unknown error\n");
 882                 return ;
 883         }
 884 }
 885
 886 void Server_Cmd_ADD(tClient *Client, char *Args)
 887 {
 888         char    *user, *ammount, *reason;
 889          int    uid, iAmmount;
 890
 891         // Parse arguments
 892         if( Server_int_ParseArgs(1, Args, &user, &ammount, &reason, NULL) ) {
 893                 sendf(Client->Socket, "407 ADD takes 3 arguments\n");
 894                 return ;
 895         }
 896
 897         if( !Client->bIsAuthed ) {
 898                 sendf(Client->Socket, "401 Not Authenticated\n");
 899                 return ;
 900         }
 901
 902         // Check user permissions
 903         if( !(Bank_GetFlags(Client->UID) & (USER_FLAG_COKE|USER_FLAG_ADMIN))  ) {
 904                 sendf(Client->Socket, "403 Not in coke\n");
 905                 return ;
 906         }
 907
 908         // Get recipient
 909         uid = Bank_GetAcctByName(user, 0);
 910         if( uid == -1 ) {
 911                 sendf(Client->Socket, "404 Invalid user\n");
 912                 return ;
 913         }
 914
 915         // You can't alter an internal account
 916         if( !(Bank_GetFlags(Client->UID) & USER_FLAG_ADMIN) )
 917         {
 918                 if( Bank_GetFlags(uid) & USER_FLAG_INTERNAL ) {
 919                         sendf(Client->Socket, "404 Invalid user\n");
 920                         return ;
 921                 }
 922                 // TODO: Maybe disallow changes to disabled?
 923         }
 924
 925         // Parse ammount
 926         iAmmount = atoi(ammount);
 927         if( iAmmount == 0 && ammount[0] != '0' ) {
 928                 sendf(Client->Socket, "407 Invalid Argument\n");
 929                 return ;
 930         }
 931
 932         // Do give
 933         switch( DispenseAdd(Client->UID, uid, iAmmount, reason) )
 934         {
 935         case 0:
 936                 sendf(Client->Socket, "200 Add OK\n");
 937                 return ;
 938         case 2:
 939                 sendf(Client->Socket, "402 Poor Guy\n");
 940                 return ;
 941         default:
 942                 sendf(Client->Socket, "500 Unknown error\n");
 943                 return ;
 944         }
 945 }
 946
 947 void Server_Cmd_SET(tClient *Client, char *Args)
 948 {
 949         char    *user, *ammount, *reason;
 950          int    uid, iAmmount;
 951
 952         // Parse arguments
 953         if( Server_int_ParseArgs(1, Args, &user, &ammount, &reason, NULL) ) {
 954                 sendf(Client->Socket, "407 SET takes 3 arguments\n");
 955                 return ;
 956         }
 957
 958         if( !Client->bIsAuthed ) {
 959                 sendf(Client->Socket, "401 Not Authenticated\n");
 960                 return ;
 961         }
 962
 963         // Check user permissions
 964         if( !(Bank_GetFlags(Client->UID) & USER_FLAG_ADMIN)  ) {
 965                 sendf(Client->Socket, "403 Not an admin\n");
 966                 return ;
 967         }
 968
 969         // Get recipient
 970         uid = Bank_GetAcctByName(user, 0);
 971         if( uid == -1 ) {
 972                 sendf(Client->Socket, "404 Invalid user\n");
 973                 return ;
 974         }
 975
 976         // Parse ammount
 977         iAmmount = atoi(ammount);
 978         if( iAmmount == 0 && ammount[0] != '0' ) {
 979                 sendf(Client->Socket, "407 Invalid Argument\n");
 980                 return ;
 981         }
 982
 983         // Do give
 984         switch( DispenseSet(Client->UID, uid, iAmmount, reason) )
 985         {
 986         case 0:
 987                 sendf(Client->Socket, "200 Add OK\n");
 988                 return ;
 989         case 2:
 990                 sendf(Client->Socket, "402 Poor Guy\n");
 991                 return ;
 992         default:
 993                 sendf(Client->Socket, "500 Unknown error\n");
 994                 return ;
 995         }
 996 }
 997
 998 void Server_Cmd_ENUMUSERS(tClient *Client, char *Args)
 999 {
1000          int    i, numRet = 0;
1001         tAcctIterator   *it;
1002          int    maxBal = INT_MAX, minBal = INT_MIN;
1003          int    flagMask = 0, flagVal = 0;
1004          int    sort = BANK_ITFLAG_SORT_NAME;
1005         time_t  lastSeenAfter=0, lastSeenBefore=0;
1006
1007          int    flags;  // Iterator flags
1008          int    balValue;       // Balance value for iterator
1009         time_t  timeValue;      // Time value for iterator
1010
1011         // Parse arguments
1012         if( Args && strlen(Args) )
1013         {
1014                 char    *space = Args, *type, *val;
1015                 do
1016                 {
1017                         type = space;
1018                         while(*type == ' ')     type ++;
1019                         // Get next space
1020                         space = strchr(space, ' ');
1021                         if(space)       *space = '\0';
1022
1023                         // Get type
1024                         val = strchr(type, ':');
1025                         if( val ) {
1026                                 *val = '\0';
1027                                 val ++;
1028
1029                                 // Types
1030                                 // - Minium Balance
1031                                 if( strcmp(type, "min_balance") == 0 ) {
1032                                         minBal = atoi(val);
1033                                 }
1034                                 // - Maximum Balance
1035                                 else if( strcmp(type, "max_balance") == 0 ) {
1036                                         maxBal = atoi(val);
1037                                 }
1038                                 // - Flags
1039                                 else if( strcmp(type, "flags") == 0 ) {
1040                                         if( Server_int_ParseFlags(Client, val, &flagMask, &flagVal) )
1041                                                 return ;
1042                                 }
1043                                 // - Last seen before timestamp
1044                                 else if( strcmp(type, "last_seen_before") == 0 ) {
1045                                         lastSeenAfter = atoll(val);
1046                                 }
1047                                 // - Last seen after timestamp
1048                                 else if( strcmp(type, "last_seen_after") == 0 ) {
1049                                         lastSeenAfter = atoll(val);
1050                                 }
1051                                 // - Sorting
1052                                 else if( strcmp(type, "sort") == 0 ) {
1053                                         char    *dash = strchr(val, '-');
1054                                         if( dash ) {
1055                                                 *dash = '\0';
1056                                                 dash ++;
1057                                         }
1058                                         if( strcmp(val, "name") == 0 ) {
1059                                                 sort = BANK_ITFLAG_SORT_NAME;
1060                                         }
1061                                         else if( strcmp(val, "balance") == 0 ) {
1062                                                 sort = BANK_ITFLAG_SORT_BAL;
1063                                         }
1064                                         else if( strcmp(val, "lastseen") == 0 ) {
1065                                                 sort = BANK_ITFLAG_SORT_LASTSEEN;
1066                                         }
1067                                         else {
1068                                                 sendf(Client->Socket, "407 Unknown sort field ('%s')\n", val);
1069                                                 return ;
1070                                         }
1071                                         // Handle sort direction
1072                                         if( dash ) {
1073                                                 if( strcmp(dash, "desc") == 0 ) {
1074                                                         sort |= BANK_ITFLAG_REVSORT;
1075                                                 }
1076                                                 else {
1077                                                         sendf(Client->Socket, "407 Unknown sort direction '%s'\n", dash);
1078                                                         return ;
1079                                                 }
1080                                                 dash[-1] = '-';
1081                                         }
1082                                 }
1083                                 else {
1084                                         sendf(Client->Socket, "407 Unknown argument to ENUM_USERS '%s:%s'\n", type, val);
1085                                         return ;
1086                                 }
1087
1088                                 val[-1] = ':';
1089                         }
1090                         else {
1091                                 sendf(Client->Socket, "407 Unknown argument to ENUM_USERS '%s'\n", type);
1092                                 return ;
1093                         }
1094
1095                         // Eat whitespace
1096                         if( space ) {
1097                                 *space = ' ';   // Repair (to be nice)
1098                                 space ++;
1099                                 while(*space == ' ')    space ++;
1100                         }
1101                 }       while(space);
1102         }
1103
1104         // Create iterator
1105         if( maxBal != INT_MAX ) {
1106                 flags = sort|BANK_ITFLAG_MAXBALANCE;
1107                 balValue = maxBal;
1108         }
1109         else if( minBal != INT_MIN ) {
1110                 flags = sort|BANK_ITFLAG_MINBALANCE;
1111                 balValue = minBal;
1112         }
1113         else {
1114                 flags = sort;
1115                 balValue = 0;
1116         }
1117         if( lastSeenBefore ) {
1118                 timeValue = lastSeenBefore;
1119                 flags |= BANK_ITFLAG_SEENBEFORE;
1120         }
1121         else if( lastSeenAfter ) {
1122                 timeValue = lastSeenAfter;
1123                 flags |= BANK_ITFLAG_SEENAFTER;
1124         }
1125         else {
1126                 timeValue = 0;
1127         }
1128         it = Bank_Iterator(flagMask, flagVal, flags, balValue, timeValue);
1129
1130         // Get return number
1131         while( (i = Bank_IteratorNext(it)) != -1 )
1132         {
1133                 int bal = Bank_GetBalance(i);
1134
1135                 if( bal == INT_MIN )    continue;
1136
1137                 if( bal < minBal )      continue;
1138                 if( bal > maxBal )      continue;
1139
1140                 numRet ++;
1141         }
1142
1143         Bank_DelIterator(it);
1144
1145         // Send count
1146         sendf(Client->Socket, "201 Users %i\n", numRet);
1147
1148
1149         // Create iterator
1150         it = Bank_Iterator(flagMask, flagVal, flags, balValue, timeValue);
1151
1152         while( (i = Bank_IteratorNext(it)) != -1 )
1153         {
1154                 int bal = Bank_GetBalance(i);
1155
1156                 if( bal == INT_MIN )    continue;
1157
1158                 if( bal < minBal )      continue;
1159                 if( bal > maxBal )      continue;
1160
1161                 _SendUserInfo(Client, i);
1162         }
1163
1164         Bank_DelIterator(it);
1165
1166         sendf(Client->Socket, "200 List End\n");
1167 }
1168
1169 void Server_Cmd_USERINFO(tClient *Client, char *Args)
1170 {
1171          int    uid;
1172         char    *user;
1173
1174         // Parse arguments
1175         if( Server_int_ParseArgs(0, Args, &user, NULL) ) {
1176                 sendf(Client->Socket, "407 USER_INFO takes 1 argument\n");
1177                 return ;
1178         }
1179
1180         if( giDebugLevel )      Debug(Client, "User Info '%s'", user);
1181
1182         // Get recipient
1183         uid = Bank_GetAcctByName(user, 0);
1184
1185         if( giDebugLevel >= 2 ) Debug(Client, "uid = %i", uid);
1186         if( uid == -1 ) {
1187                 sendf(Client->Socket, "404 Invalid user\n");
1188                 return ;
1189         }
1190
1191         _SendUserInfo(Client, uid);
1192 }
1193
1194 void _SendUserInfo(tClient *Client, int UserID)
1195 {
1196         char    *type, *disabled="", *door="";
1197          int    flags = Bank_GetFlags(UserID);
1198
1199         if( flags & USER_FLAG_INTERNAL ) {
1200                 type = "internal";
1201         }
1202         else if( flags & USER_FLAG_COKE ) {
1203                 if( flags & USER_FLAG_ADMIN )
1204                         type = "coke,admin";
1205                 else
1206                         type = "coke";
1207         }
1208         else if( flags & USER_FLAG_ADMIN ) {
1209                 type = "admin";
1210         }
1211         else {
1212                 type = "user";
1213         }
1214
1215         if( flags & USER_FLAG_DISABLED )
1216                 disabled = ",disabled";
1217         if( flags & USER_FLAG_DOORGROUP )
1218                 door = ",door";
1219
1220         // TODO: User flags/type
1221         sendf(
1222                 Client->Socket, "202 User %s %i %s%s%s\n",
1223                 Bank_GetAcctName(UserID), Bank_GetBalance(UserID),
1224                 type, disabled, door
1225                 );
1226 }
1227
1228 void Server_Cmd_USERADD(tClient *Client, char *Args)
1229 {
1230         char    *username;
1231
1232         // Parse arguments
1233         if( Server_int_ParseArgs(0, Args, &username, NULL) ) {
1234                 sendf(Client->Socket, "407 USER_ADD takes 1 argument\n");
1235                 return ;
1236         }
1237
1238         // Check permissions
1239         if( !(Bank_GetFlags(Client->UID) & USER_FLAG_ADMIN) ) {
1240                 sendf(Client->Socket, "403 Not a coke admin\n");
1241                 return ;
1242         }
1243
1244         // Try to create user
1245         if( Bank_CreateAcct(username) == -1 ) {
1246                 sendf(Client->Socket, "404 User exists\n");
1247                 return ;
1248         }
1249
1250         {
1251                 char    *thisName = Bank_GetAcctName(Client->UID);
1252                 Log_Info("Account '%s' created by '%s'", username, thisName);
1253                 free(thisName);
1254         }
1255
1256         sendf(Client->Socket, "200 User Added\n");
1257 }
1258
1259 void Server_Cmd_USERFLAGS(tClient *Client, char *Args)
1260 {
1261         char    *username, *flags;
1262          int    mask=0, value=0;
1263          int    uid;
1264
1265         // Parse arguments
1266         if( Server_int_ParseArgs(0, Args, &username, &flags, NULL) ) {
1267                 sendf(Client->Socket, "407 USER_FLAGS takes 2 arguments\n");
1268                 return ;
1269         }
1270
1271         // Check permissions
1272         if( !(Bank_GetFlags(Client->UID) & USER_FLAG_ADMIN) ) {
1273                 sendf(Client->Socket, "403 Not a coke admin\n");
1274                 return ;
1275         }
1276
1277         // Get UID
1278         uid = Bank_GetAcctByName(username, 0);
1279         if( uid == -1 ) {
1280                 sendf(Client->Socket, "404 User '%s' not found\n", username);
1281                 return ;
1282         }
1283
1284         // Parse flags
1285         if( Server_int_ParseFlags(Client, flags, &mask, &value) )
1286                 return ;
1287
1288         if( giDebugLevel )
1289                 Debug(Client, "Set %i(%s) flags to %x (masked %x)\n",
1290                         uid, username, mask, value);
1291
1292         // Apply flags
1293         Bank_SetFlags(uid, mask, value);
1294
1295         // Return OK
1296         sendf(Client->Socket, "200 User Updated\n");
1297 }
1298
1299 void Server_Cmd_UPDATEITEM(tClient *Client, char *Args)
1300 {
1301         char    *itemname, *price_str, *description;
1302          int    price;
1303         tItem   *item;
1304
1305         if( Server_int_ParseArgs(1, Args, &itemname, &price_str, &description, NULL) ) {
1306                 sendf(Client->Socket, "407 UPDATE_ITEM takes 3 arguments\n");
1307                 return ;
1308         }
1309
1310         if( !Client->bIsAuthed ) {
1311                 sendf(Client->Socket, "401 Not Authenticated\n");
1312                 return ;
1313         }
1314
1315         // Check user permissions
1316         if( !(Bank_GetFlags(Client->UID) & (USER_FLAG_COKE|USER_FLAG_ADMIN))  ) {
1317                 sendf(Client->Socket, "403 Not in coke\n");
1318                 return ;
1319         }
1320
1321         item = _GetItemFromString(itemname);
1322         if( !item ) {
1323                 // TODO: Create item?
1324                 sendf(Client->Socket, "406 Bad Item ID\n");
1325                 return ;
1326         }
1327
1328         price = atoi(price_str);
1329         if( price <= 0 && price_str[0] != '0' ) {
1330                 sendf(Client->Socket, "407 Invalid price set\n");
1331         }
1332
1333         switch( DispenseUpdateItem( Client->UID, item, description, price ) )
1334         {
1335         case 0:
1336                 // Return OK
1337                 sendf(Client->Socket, "200 Item updated\n");
1338                 break;
1339         default:
1340                 break;
1341         }
1342 }
1343
1344 // --- INTERNAL HELPERS ---
1345 void Debug(tClient *Client, const char *Format, ...)
1346 {
1347         va_list args;
1348         //printf("%010i [%i] ", (int)time(NULL), Client->ID);
1349         printf("[%i] ", Client->ID);
1350         va_start(args, Format);
1351         vprintf(Format, args);
1352         va_end(args);
1353         printf("\n");
1354 }
1355
1356 int sendf(int Socket, const char *Format, ...)
1357 {
1358         va_list args;
1359          int    len;
1360
1361         va_start(args, Format);
1362         len = vsnprintf(NULL, 0, Format, args);
1363         va_end(args);
1364
1365         {
1366                 char    buf[len+1];
1367                 va_start(args, Format);
1368                 vsnprintf(buf, len+1, Format, args);
1369                 va_end(args);
1370
1371                 #if DEBUG_TRACE_CLIENT
1372                 printf("sendf: %s", buf);
1373                 #endif
1374
1375                 return send(Socket, buf, len, 0);
1376         }
1377 }
1378
1379 // Takes a series of char *'s in
1380 /**
1381  * \brief Parse space-separated entries into
1382  */
1383 int Server_int_ParseArgs(int bUseLongLast, char *ArgStr, ...)
1384 {
1385         va_list args;
1386         char    savedChar;
1387         char    **dest;
1388         va_start(args, ArgStr);
1389
1390         // Check for null
1391         if( !ArgStr )
1392         {
1393                 while( (dest = va_arg(args, char **)) )
1394                         *dest = NULL;
1395                 va_end(args);
1396                 return 1;
1397         }
1398
1399         savedChar = *ArgStr;
1400
1401         while( (dest = va_arg(args, char **)) )
1402         {
1403                 // Trim leading spaces
1404                 while( *ArgStr == ' ' || *ArgStr == '\t' )
1405                         ArgStr ++;
1406
1407                 // ... oops, not enough arguments
1408                 if( *ArgStr == '\0' )
1409                 {
1410                         // NULL unset arguments
1411                         do {
1412                                 *dest = NULL;
1413                         }       while( (dest = va_arg(args, char **)) );
1414                 va_end(args);
1415                         return -1;
1416                 }
1417
1418                 if( *ArgStr == '"' )
1419                 {
1420                         ArgStr ++;
1421                         *dest = ArgStr;
1422                         // Read until quote
1423                         while( *ArgStr && *ArgStr != '"' )
1424                                 ArgStr ++;
1425                 }
1426                 else
1427                 {
1428                         // Set destination
1429                         *dest = ArgStr;
1430                         // Read until a space
1431                         while( *ArgStr && *ArgStr != ' ' && *ArgStr != '\t' )
1432                                 ArgStr ++;
1433                 }
1434                 savedChar = *ArgStr;    // savedChar is used to un-mangle the last string
1435                 *ArgStr = '\0';
1436                 ArgStr ++;
1437         }
1438         va_end(args);
1439
1440         // Oops, extra arguments, and greedy not set
1441         if( (savedChar == ' ' || savedChar == '\t') && !bUseLongLast ) {
1442                 return -1;
1443         }
1444
1445         // Un-mangle last
1446         if(bUseLongLast) {
1447                 ArgStr --;
1448                 *ArgStr = savedChar;
1449         }
1450
1451         return 0;       // Success!
1452 }
1453
1454 int Server_int_ParseFlags(tClient *Client, const char *Str, int *Mask, int *Value)
1455 {
1456         struct {
1457                 const char      *Name;
1458                  int    Mask;
1459                  int    Value;
1460         }       cFLAGS[] = {
1461                  {"disabled", USER_FLAG_DISABLED, USER_FLAG_DISABLED}
1462                 ,{"door", USER_FLAG_DOORGROUP, USER_FLAG_DOORGROUP}
1463                 ,{"coke", USER_FLAG_COKE, USER_FLAG_COKE}
1464                 ,{"admin", USER_FLAG_ADMIN, USER_FLAG_ADMIN}
1465                 ,{"internal", USER_FLAG_INTERNAL, USER_FLAG_INTERNAL}
1466         };
1467         const int       ciNumFlags = sizeof(cFLAGS)/sizeof(cFLAGS[0]);
1468
1469         char    *space;
1470
1471         *Mask = 0;
1472         *Value = 0;
1473
1474         do {
1475                  int    bRemove = 0;
1476                  int    i;
1477                  int    len;
1478
1479                 while( *Str == ' ' )    Str ++; // Eat whitespace
1480                 space = strchr(Str, ',');       // Find the end of the flag
1481                 if(space)
1482                         len = space - Str;
1483                 else
1484                         len = strlen(Str);
1485
1486                 // Check for inversion/removal
1487                 if( *Str == '!' || *Str == '-' ) {
1488                         bRemove = 1;
1489                         Str ++;
1490                 }
1491                 else if( *Str == '+' ) {
1492                         Str ++;
1493                 }
1494
1495                 // Check flag values
1496                 for( i = 0; i < ciNumFlags; i ++ )
1497                 {
1498                         if( strncmp(Str, cFLAGS[i].Name, len) == 0 ) {
1499                                 *Mask |= cFLAGS[i].Mask;
1500                                 *Value &= ~cFLAGS[i].Mask;
1501                                 if( !bRemove )
1502                                         *Value |= cFLAGS[i].Value;
1503                                 break;
1504                         }
1505                 }
1506
1507                 // Error check
1508                 if( i == ciNumFlags ) {
1509                         char    val[len+1];
1510                         strncpy(val, Str, len+1);
1511                         sendf(Client->Socket, "407 Unknown flag value '%s'\n", val);
1512                         return -1;
1513                 }
1514
1515                 Str = space + 1;
1516         } while(space);
1517
1518         return 0;
1519 }