src/server/server.c

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