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 #define HACK_NO_REFUNDS 1
  25
  26 // Statistics
  27 #define MAX_CONNECTION_QUEUE    5
  28 #define INPUT_BUFFER_SIZE       256
  29 #define CLIENT_TIMEOUT  10      // Seconds
  30
  31 #define HASH_TYPE       SHA1
  32 #define HASH_LENGTH     20
  33
  34 #define MSG_STR_TOO_LONG        "499 Command too long (limit "EXPSTR(INPUT_BUFFER_SIZE)")\n"
  35
  36 // === TYPES ===
  37 typedef struct sClient
  38 {
  39          int    Socket; // Client socket ID
  40          int    ID;     // Client ID
  41
  42          int    bIsTrusted;     // Is the connection from a trusted host/port
  43
  44         char    *Username;
  45         char    Salt[9];
  46
  47          int    UID;
  48          int    EffectiveUID;
  49          int    bIsAuthed;
  50 }       tClient;
  51
  52 // === PROTOTYPES ===
  53 void    Server_Start(void);
  54 void    Server_Cleanup(void);
  55 void    Server_HandleClient(int Socket, int bTrusted);
  56 void    Server_ParseClientCommand(tClient *Client, char *CommandString);
  57 // --- Commands ---
  58 void    Server_Cmd_USER(tClient *Client, char *Args);
  59 void    Server_Cmd_PASS(tClient *Client, char *Args);
  60 void    Server_Cmd_AUTOAUTH(tClient *Client, char *Args);
  61 void    Server_Cmd_SETEUSER(tClient *Client, char *Args);
  62 void    Server_Cmd_ENUMITEMS(tClient *Client, char *Args);
  63 void    Server_Cmd_ITEMINFO(tClient *Client, char *Args);
  64 void    Server_Cmd_DISPENSE(tClient *Client, char *Args);
  65 void    Server_Cmd_REFUND(tClient *Client, char *Args);
  66 void    Server_Cmd_GIVE(tClient *Client, char *Args);
  67 void    Server_Cmd_DONATE(tClient *Client, char *Args);
  68 void    Server_Cmd_ADD(tClient *Client, char *Args);
  69 void    Server_Cmd_SET(tClient *Client, char *Args);
  70 void    Server_Cmd_ENUMUSERS(tClient *Client, char *Args);
  71 void    Server_Cmd_USERINFO(tClient *Client, char *Args);
  72 void    _SendUserInfo(tClient *Client, int UserID);
  73 void    Server_Cmd_USERADD(tClient *Client, char *Args);
  74 void    Server_Cmd_USERFLAGS(tClient *Client, char *Args);
  75 void    Server_Cmd_UPDATEITEM(tClient *Client, char *Args);
  76 // --- Helpers ---
  77 void    Debug(tClient *Client, const char *Format, ...);
  78  int    sendf(int Socket, const char *Format, ...);
  79  int    Server_int_ParseArgs(int bUseLongArg, char *ArgStr, ...);
  80  int    Server_int_ParseFlags(tClient *Client, const char *Str, int *Mask, int *Value);
  81
  82 // === CONSTANTS ===
  83 // - Commands
  84 const struct sClientCommand {
  85         const char      *Name;
  86         void    (*Function)(tClient *Client, char *Arguments);
  87 }       gaServer_Commands[] = {
  88         {"USER", Server_Cmd_USER},
  89         {"PASS", Server_Cmd_PASS},
  90         {"AUTOAUTH", Server_Cmd_AUTOAUTH},
  91         {"SETEUSER", Server_Cmd_SETEUSER},
  92         {"ENUM_ITEMS", Server_Cmd_ENUMITEMS},
  93         {"ITEM_INFO", Server_Cmd_ITEMINFO},
  94         {"DISPENSE", Server_Cmd_DISPENSE},
  95         {"REFUND", Server_Cmd_REFUND},
  96         {"GIVE", Server_Cmd_GIVE},
  97         {"DONATE", Server_Cmd_DONATE},
  98         {"ADD", Server_Cmd_ADD},
  99         {"SET", Server_Cmd_SET},
 100         {"ENUM_USERS", Server_Cmd_ENUMUSERS},
 101         {"USER_INFO", Server_Cmd_USERINFO},
 102         {"USER_ADD", Server_Cmd_USERADD},
 103         {"USER_FLAGS", Server_Cmd_USERFLAGS},
 104         {"UPDATE_ITEM", Server_Cmd_UPDATEITEM}
 105 };
 106 #define NUM_COMMANDS    ((int)(sizeof(gaServer_Commands)/sizeof(gaServer_Commands[0])))
 107
 108 // === GLOBALS ===
 109 // - Configuration
 110  int    giServer_Port = 11020;
 111  int    gbServer_RunInBackground = 0;
 112 char    *gsServer_LogFile = "/var/log/dispsrv.log";
 113 char    *gsServer_ErrorLog = "/var/log/dispsrv.err";
 114 // - State variables
 115  int    giServer_Socket;        // Server socket
 116  int    giServer_NextClientID = 1;      // Debug client ID
 117
 118
 119 // === CODE ===
 120 /**
 121  * \brief Open listenting socket and serve connections
 122  */
 123 void Server_Start(void)
 124 {
 125          int    client_socket;
 126         struct sockaddr_in      server_addr, client_addr;
 127
 128         atexit(Server_Cleanup);
 129         // Ignore SIGPIPE (stops crashes when the client exits early)
 130         signal(SIGPIPE, SIG_IGN);
 131
 132         // Create Server
 133         giServer_Socket = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);
 134         if( giServer_Socket < 0 ) {
 135                 fprintf(stderr, "ERROR: Unable to create server socket\n");
 136                 return ;
 137         }
 138
 139         // Make listen address
 140         memset(&server_addr, 0, sizeof(server_addr));
 141         server_addr.sin_family = AF_INET;       // Internet Socket
 142         server_addr.sin_addr.s_addr = htonl(INADDR_ANY);        // Listen on all interfaces
 143         server_addr.sin_port = htons(giServer_Port);    // Port
 144
 145         // Bind
 146         if( bind(giServer_Socket, (struct sockaddr *) &server_addr, sizeof(server_addr)) < 0 ) {
 147                 fprintf(stderr, "ERROR: Unable to bind to 0.0.0.0:%i\n", giServer_Port);
 148                 perror("Binding");
 149                 return ;
 150         }
 151
 152         // Fork into background
 153         if( gbServer_RunInBackground )
 154         {
 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                 dup2( open("/dev/null", O_RDONLY, 0644), STDIN_FILENO );
 168                 dup2( open(gsServer_LogFile, O_CREAT|O_APPEND, 0644), STDOUT_FILENO );
 169                 dup2( open(gsServer_ErrorLog, O_CREAT|O_APPEND, 0644), STDERR_FILENO );
 170         }
 171
 172         // Start the helper thread
 173         StartPeriodicThread();
 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 0x825F0D04:        // 130.95.13.4  merlo
 238                         case 0x825F0D05:        // 130.95.13.5  heathred (MR)
 239                         case 0x825F0D07:        // 130.95.13.7  motsugo
 240                         case 0x825F0D11:        // 130.95.13.17 mermaid
 241                         case 0x825F0D12:        // 130.95.13.18 mussel
 242                         case 0x825F0D17:        // 130.95.13.23 martello
 243                         case 0x825F0D2A:        // 130.95.13.42 meersau
 244                         case 0x825F0D42:        // 130.95.13.66 heathred (Clubroom)
 245                                 bTrusted = 1;
 246                                 break;
 247                         default:
 248                                 break;
 249                         }
 250                 }
 251
 252                 // TODO: Multithread this?
 253                 Server_HandleClient(client_socket, bTrusted);
 254
 255                 close(client_socket);
 256         }
 257 }
 258
 259 void Server_Cleanup(void)
 260 {
 261         printf("\nClose(%i)\n", giServer_Socket);
 262         close(giServer_Socket);
 263         unlink("/var/run/dispsrv.pid");
 264 }
 265
 266 /**
 267  * \brief Reads from a client socket and parses the command strings
 268  * \param Socket        Client socket number/handle
 269  * \param bTrusted      Is the client trusted?
 270  */
 271 void Server_HandleClient(int Socket, int bTrusted)
 272 {
 273         char    inbuf[INPUT_BUFFER_SIZE];
 274         char    *buf = inbuf;
 275          int    remspace = INPUT_BUFFER_SIZE-1;
 276          int    bytes = -1;
 277         tClient clientInfo;
 278
 279         memset(&clientInfo, 0, sizeof(clientInfo));
 280
 281         // Initialise Client info
 282         clientInfo.Socket = Socket;
 283         clientInfo.ID = giServer_NextClientID ++;
 284         clientInfo.bIsTrusted = bTrusted;
 285         clientInfo.EffectiveUID = -1;
 286
 287         // Read from client
 288         /*
 289          * Notes:
 290          * - The `buf` and `remspace` variables allow a line to span several
 291          *   calls to recv(), if a line is not completed in one recv() call
 292          *   it is saved to the beginning of `inbuf` and `buf` is updated to
 293          *   the end of it.
 294          */
 295         // TODO: Use select() instead (to give a timeout)
 296         while( (bytes = recv(Socket, buf, remspace, 0)) > 0 )
 297         {
 298                 char    *eol, *start;
 299                 buf[bytes] = '\0';      // Allow us to use stdlib string functions on it
 300
 301                 // Split by lines
 302                 start = inbuf;
 303                 while( (eol = strchr(start, '\n')) )
 304                 {
 305                         *eol = '\0';
 306
 307                         Server_ParseClientCommand(&clientInfo, start);
 308
 309                         start = eol + 1;
 310                 }
 311
 312                 // Check if there was an incomplete line
 313                 if( *start != '\0' ) {
 314                          int    tailBytes = bytes - (start-buf);
 315                         // Roll back in buffer
 316                         memcpy(inbuf, start, tailBytes);
 317                         remspace -= tailBytes;
 318                         if(remspace == 0) {
 319                                 send(Socket, MSG_STR_TOO_LONG, sizeof(MSG_STR_TOO_LONG), 0);
 320                                 buf = inbuf;
 321                                 remspace = INPUT_BUFFER_SIZE - 1;
 322                         }
 323                 }
 324                 else {
 325                         buf = inbuf;
 326                         remspace = INPUT_BUFFER_SIZE - 1;
 327                 }
 328         }
 329
 330         // Check for errors
 331         if( bytes < 0 ) {
 332                 fprintf(stderr, "ERROR: Unable to recieve from client on socket %i\n", Socket);
 333                 return ;
 334         }
 335
 336         if(giDebugLevel >= 2) {
 337                 printf("Client %i: Disconnected\n", clientInfo.ID);
 338         }
 339 }
 340
 341 /**
 342  * \brief Parses a client command and calls the required helper function
 343  * \param Client        Pointer to client state structure
 344  * \param CommandString Command from client (single line of the command)
 345  * \return Heap String to return to the client
 346  */
 347 void Server_ParseClientCommand(tClient *Client, char *CommandString)
 348 {
 349         char    *command, *args;
 350          int    i;
 351
 352         if( giDebugLevel >= 2 )
 353                 Debug(Client, "Server_ParseClientCommand: (CommandString = '%s')", CommandString);
 354
 355         if( Server_int_ParseArgs(1, CommandString, &command, &args, NULL) )
 356         {
 357                 if( command == NULL )   return ;
 358                 // Is this an error? (just ignore for now)
 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 authentication
 540         if( !Client->bIsAuthed ) {
 541                 sendf(Client->Socket, "401 Not Authenticated\n");
 542                 return ;
 543         }
 544
 545         // Check user permissions
 546         userFlags = Bank_GetFlags(Client->UID);
 547         if( !(userFlags & (USER_FLAG_COKE|USER_FLAG_ADMIN)) ) {
 548                 sendf(Client->Socket, "403 Not in coke\n");
 549                 return ;
 550         }
 551
 552         // Set id
 553         Client->EffectiveUID = Bank_GetAcctByName(username, 0);
 554         if( Client->EffectiveUID == -1 ) {
 555                 sendf(Client->Socket, "404 User not found\n");
 556                 return ;
 557         }
 558
 559         // You can't be an internal account
 560         if( !(userFlags & USER_FLAG_ADMIN) )
 561         {
 562                 eUserFlags = Bank_GetFlags(Client->EffectiveUID);
 563                 if( eUserFlags & USER_FLAG_INTERNAL ) {
 564                         Client->EffectiveUID = -1;
 565                         sendf(Client->Socket, "404 User not found\n");
 566                         return ;
 567                 }
 568                 // Disabled only avaliable to admins
 569                 if( eUserFlags & USER_FLAG_DISABLED ) {
 570                         Client->EffectiveUID = -1;
 571                         sendf(Client->Socket, "403 Account disabled\n");
 572                         return ;
 573                 }
 574         }
 575
 576         sendf(Client->Socket, "200 User set\n");
 577 }
 578
 579 /**
 580  * \brief Send an item status to the client
 581  * \param Client        Who to?
 582  * \param Item  Item to send
 583  */
 584 void Server_int_SendItem(tClient *Client, tItem *Item)
 585 {
 586         char    *status = "avail";
 587
 588         if( Item->Handler->CanDispense )
 589         {
 590                 switch(Item->Handler->CanDispense(Client->UID, Item->ID))
 591                 {
 592                 case  0:        status = "avail";       break;
 593                 case  1:        status = "sold";        break;
 594                 default:
 595                 case -1:        status = "error";       break;
 596                 }
 597         }
 598
 599         // KNOWN HACK: Naming a slot 'dead' disables it
 600         if( strcmp(Item->Name, "dead") == 0 )
 601                 status = "sold";        // Another status?
 602
 603         sendf(Client->Socket,
 604                 "202 Item %s:%i %s %i %s\n",
 605                 Item->Handler->Name, Item->ID, status, Item->Price, Item->Name
 606                 );
 607 }
 608
 609 /**
 610  * \brief Enumerate the items that the server knows about
 611  */
 612 void Server_Cmd_ENUMITEMS(tClient *Client, char *Args)
 613 {
 614          int    i, count;
 615
 616         if( Args != NULL && strlen(Args) ) {
 617                 sendf(Client->Socket, "407 ENUM_ITEMS takes no arguments\n");
 618                 return ;
 619         }
 620
 621         // Count shown items
 622         count = 0;
 623         for( i = 0; i < giNumItems; i ++ ) {
 624                 if( gaItems[i].bHidden )        continue;
 625                 count ++;
 626         }
 627
 628         sendf(Client->Socket, "201 Items %i\n", count);
 629
 630         for( i = 0; i < giNumItems; i ++ ) {
 631                 if( gaItems[i].bHidden )        continue;
 632                 Server_int_SendItem( Client, &gaItems[i] );
 633         }
 634
 635         sendf(Client->Socket, "200 List end\n");
 636 }
 637
 638 tItem *_GetItemFromString(char *String)
 639 {
 640         tHandler        *handler;
 641         char    *type = String;
 642         char    *colon = strchr(String, ':');
 643          int    num, i;
 644
 645         if( !colon ) {
 646                 return NULL;
 647         }
 648
 649         num = atoi(colon+1);
 650         *colon = '\0';
 651
 652         // Find handler
 653         handler = NULL;
 654         for( i = 0; i < giNumHandlers; i ++ )
 655         {
 656                 if( strcmp(gaHandlers[i]->Name, type) == 0) {
 657                         handler = gaHandlers[i];
 658                         break;
 659                 }
 660         }
 661         if( !handler ) {
 662                 return NULL;
 663         }
 664
 665         // Find item
 666         for( i = 0; i < giNumItems; i ++ )
 667         {
 668                 if( gaItems[i].Handler != handler )     continue;
 669                 if( gaItems[i].ID != num )      continue;
 670                 return &gaItems[i];
 671         }
 672         return NULL;
 673 }
 674
 675 /**
 676  * \brief Fetch information on a specific item
 677  */
 678 void Server_Cmd_ITEMINFO(tClient *Client, char *Args)
 679 {
 680         tItem   *item;
 681         char    *itemname;
 682
 683         if( Server_int_ParseArgs(0, Args, &itemname, NULL) ) {
 684                 sendf(Client->Socket, "407 ITEMINFO takes 1 argument\n");
 685                 return ;
 686         }
 687         item = _GetItemFromString(Args);
 688
 689         if( !item ) {
 690                 sendf(Client->Socket, "406 Bad Item ID\n");
 691                 return ;
 692         }
 693
 694         Server_int_SendItem( Client, item );
 695 }
 696
 697 void Server_Cmd_DISPENSE(tClient *Client, char *Args)
 698 {
 699         tItem   *item;
 700          int    ret;
 701          int    uid;
 702         char    *itemname;
 703
 704         if( Server_int_ParseArgs(0, Args, &itemname, NULL) ) {
 705                 sendf(Client->Socket, "407 DISPENSE takes only 1 argument\n");
 706                 return ;
 707         }
 708
 709         if( !Client->bIsAuthed ) {
 710                 sendf(Client->Socket, "401 Not Authenticated\n");
 711                 return ;
 712         }
 713
 714         item = _GetItemFromString(itemname);
 715         if( !item ) {
 716                 sendf(Client->Socket, "406 Bad Item ID\n");
 717                 return ;
 718         }
 719
 720         if( Client->EffectiveUID != -1 ) {
 721                 uid = Client->EffectiveUID;
 722         }
 723         else {
 724                 uid = Client->UID;
 725         }
 726
 727         switch( ret = DispenseItem( Client->UID, uid, item ) )
 728         {
 729         case 0: sendf(Client->Socket, "200 Dispense OK\n");     return ;
 730         case 1: sendf(Client->Socket, "501 Unable to dispense\n");      return ;
 731         case 2: sendf(Client->Socket, "402 Poor You\n");        return ;
 732         default:
 733                 sendf(Client->Socket, "500 Dispense Error (%i)\n", ret);
 734                 return ;
 735         }
 736 }
 737
 738 void Server_Cmd_REFUND(tClient *Client, char *Args)
 739 {
 740         tItem   *item;
 741          int    uid, price_override = 0;
 742         char    *username, *itemname, *price_str;
 743
 744         if( Server_int_ParseArgs(0, Args, &username, &itemname, &price_str, NULL) ) {
 745                 if( !itemname || price_str ) {
 746                         sendf(Client->Socket, "407 REFUND takes 2 or 3 arguments\n");
 747                         return ;
 748                 }
 749         }
 750
 751         if( !Client->bIsAuthed ) {
 752                 sendf(Client->Socket, "401 Not Authenticated\n");
 753                 return ;
 754         }
 755
 756         // Check user permissions
 757         if( !(Bank_GetFlags(Client->UID) & (USER_FLAG_COKE|USER_FLAG_ADMIN))  ) {
 758                 sendf(Client->Socket, "403 Not in coke\n");
 759                 return ;
 760         }
 761
 762         uid = Bank_GetAcctByName(username, 0);
 763         if( uid == -1 ) {
 764                 sendf(Client->Socket, "404 Unknown user\n");
 765                 return ;
 766         }
 767
 768         item = _GetItemFromString(itemname);
 769         if( !item ) {
 770                 sendf(Client->Socket, "406 Bad Item ID\n");
 771                 return ;
 772         }
 773
 774         if( price_str )
 775                 price_override = atoi(price_str);
 776
 777         switch( DispenseRefund( Client->UID, uid, item, price_override ) )
 778         {
 779         case 0: sendf(Client->Socket, "200 Item Refunded\n");   return ;
 780         default:
 781                 sendf(Client->Socket, "500 Dispense Error\n");
 782                 return;
 783         }
 784 }
 785
 786 void Server_Cmd_GIVE(tClient *Client, char *Args)
 787 {
 788         char    *recipient, *ammount, *reason;
 789          int    uid, iAmmount;
 790          int    thisUid;
 791
 792         // Parse arguments
 793         if( Server_int_ParseArgs(1, Args, &recipient, &ammount, &reason, NULL) ) {
 794                 sendf(Client->Socket, "407 GIVE takes only 3 arguments\n");
 795                 return ;
 796         }
 797
 798         // Check for authed
 799         if( !Client->bIsAuthed ) {
 800                 sendf(Client->Socket, "401 Not Authenticated\n");
 801                 return ;
 802         }
 803
 804         // Get recipient
 805         uid = Bank_GetAcctByName(recipient, 0);
 806         if( uid == -1 ) {
 807                 sendf(Client->Socket, "404 Invalid target user\n");
 808                 return ;
 809         }
 810
 811         // You can't alter an internal account
 812 //      if( Bank_GetFlags(uid) & USER_FLAG_INTERNAL ) {
 813 //              sendf(Client->Socket, "404 Invalid target user\n");
 814 //              return ;
 815 //      }
 816
 817         // Parse ammount
 818         iAmmount = atoi(ammount);
 819         if( iAmmount <= 0 ) {
 820                 sendf(Client->Socket, "407 Invalid Argument, ammount must be > zero\n");
 821                 return ;
 822         }
 823
 824         if( Client->EffectiveUID != -1 ) {
 825                 thisUid = Client->EffectiveUID;
 826         }
 827         else {
 828                 thisUid = Client->UID;
 829         }
 830
 831         // Do give
 832         switch( DispenseGive(Client->UID, thisUid, uid, iAmmount, reason) )
 833         {
 834         case 0:
 835                 sendf(Client->Socket, "200 Give OK\n");
 836                 return ;
 837         case 2:
 838                 sendf(Client->Socket, "402 Poor You\n");
 839                 return ;
 840         default:
 841                 sendf(Client->Socket, "500 Unknown error\n");
 842                 return ;
 843         }
 844 }
 845
 846 void Server_Cmd_DONATE(tClient *Client, char *Args)
 847 {
 848         char    *ammount, *reason;
 849          int    iAmmount;
 850          int    thisUid;
 851
 852         // Parse arguments
 853         if( Server_int_ParseArgs(1, Args, &ammount, &reason, NULL) ) {
 854                 sendf(Client->Socket, "407 DONATE takes 2 arguments\n");
 855                 return ;
 856         }
 857
 858         if( !Client->bIsAuthed ) {
 859                 sendf(Client->Socket, "401 Not Authenticated\n");
 860                 return ;
 861         }
 862
 863         // Parse ammount
 864         iAmmount = atoi(ammount);
 865         if( iAmmount <= 0 ) {
 866                 sendf(Client->Socket, "407 Invalid Argument, ammount must be > zero\n");
 867                 return ;
 868         }
 869
 870         // Handle effective users
 871         if( Client->EffectiveUID != -1 ) {
 872                 thisUid = Client->EffectiveUID;
 873         }
 874         else {
 875                 thisUid = Client->UID;
 876         }
 877
 878         // Do give
 879         switch( DispenseDonate(Client->UID, thisUid, iAmmount, reason) )
 880         {
 881         case 0:
 882                 sendf(Client->Socket, "200 Give OK\n");
 883                 return ;
 884         case 2:
 885                 sendf(Client->Socket, "402 Poor You\n");
 886                 return ;
 887         default:
 888                 sendf(Client->Socket, "500 Unknown error\n");
 889                 return ;
 890         }
 891 }
 892
 893 void Server_Cmd_ADD(tClient *Client, char *Args)
 894 {
 895         char    *user, *ammount, *reason;
 896          int    uid, iAmmount;
 897
 898         // Parse arguments
 899         if( Server_int_ParseArgs(1, Args, &user, &ammount, &reason, NULL) ) {
 900                 sendf(Client->Socket, "407 ADD takes 3 arguments\n");
 901                 return ;
 902         }
 903
 904         if( !Client->bIsAuthed ) {
 905                 sendf(Client->Socket, "401 Not Authenticated\n");
 906                 return ;
 907         }
 908
 909         // Check user permissions
 910         if( !(Bank_GetFlags(Client->UID) & (USER_FLAG_COKE|USER_FLAG_ADMIN))  ) {
 911                 sendf(Client->Socket, "403 Not in coke\n");
 912                 return ;
 913         }
 914
 915         #if HACK_NO_REFUNDS
 916         if( strstr(reason, "refund") != NULL || strstr(reason, "misdispense") != NULL )
 917         {
 918                 sendf(Client->Socket, "499 Don't use `dispense acct` for refunds, use `dispense refund` (and `dispense -G` to get item IDs)\n");
 919                 return ;
 920         }
 921         #endif
 922
 923         // Get recipient
 924         uid = Bank_GetAcctByName(user, 0);
 925         if( uid == -1 ) {
 926                 sendf(Client->Socket, "404 Invalid user\n");
 927                 return ;
 928         }
 929
 930         // You can't alter an internal account
 931         if( !(Bank_GetFlags(Client->UID) & USER_FLAG_ADMIN) )
 932         {
 933                 if( Bank_GetFlags(uid) & USER_FLAG_INTERNAL ) {
 934                         sendf(Client->Socket, "404 Invalid user\n");
 935                         return ;
 936                 }
 937                 // TODO: Maybe disallow changes to disabled?
 938         }
 939
 940         // Parse ammount
 941         iAmmount = atoi(ammount);
 942         if( iAmmount == 0 && ammount[0] != '0' ) {
 943                 sendf(Client->Socket, "407 Invalid Argument\n");
 944                 return ;
 945         }
 946
 947         // Do give
 948         switch( DispenseAdd(Client->UID, uid, iAmmount, reason) )
 949         {
 950         case 0:
 951                 sendf(Client->Socket, "200 Add OK\n");
 952                 return ;
 953         case 2:
 954                 sendf(Client->Socket, "402 Poor Guy\n");
 955                 return ;
 956         default:
 957                 sendf(Client->Socket, "500 Unknown error\n");
 958                 return ;
 959         }
 960 }
 961
 962 void Server_Cmd_SET(tClient *Client, char *Args)
 963 {
 964         char    *user, *ammount, *reason;
 965          int    uid, iAmmount;
 966
 967         // Parse arguments
 968         if( Server_int_ParseArgs(1, Args, &user, &ammount, &reason, NULL) ) {
 969                 sendf(Client->Socket, "407 SET takes 3 arguments\n");
 970                 return ;
 971         }
 972
 973         if( !Client->bIsAuthed ) {
 974                 sendf(Client->Socket, "401 Not Authenticated\n");
 975                 return ;
 976         }
 977
 978         // Check user permissions
 979         if( !(Bank_GetFlags(Client->UID) & USER_FLAG_ADMIN)  ) {
 980                 sendf(Client->Socket, "403 Not an admin\n");
 981                 return ;
 982         }
 983
 984         // Get recipient
 985         uid = Bank_GetAcctByName(user, 0);
 986         if( uid == -1 ) {
 987                 sendf(Client->Socket, "404 Invalid user\n");
 988                 return ;
 989         }
 990
 991         // Parse ammount
 992         iAmmount = atoi(ammount);
 993         if( iAmmount == 0 && ammount[0] != '0' ) {
 994                 sendf(Client->Socket, "407 Invalid Argument\n");
 995                 return ;
 996         }
 997
 998         // Do give
 999         switch( DispenseSet(Client->UID, uid, iAmmount, reason) )
1000         {
1001         case 0:
1002                 sendf(Client->Socket, "200 Add OK\n");
1003                 return ;
1004         case 2:
1005                 sendf(Client->Socket, "402 Poor Guy\n");
1006                 return ;
1007         default:
1008                 sendf(Client->Socket, "500 Unknown error\n");
1009                 return ;
1010         }
1011 }
1012
1013 void Server_Cmd_ENUMUSERS(tClient *Client, char *Args)
1014 {
1015          int    i, numRet = 0;
1016         tAcctIterator   *it;
1017          int    maxBal = INT_MAX, minBal = INT_MIN;
1018          int    flagMask = 0, flagVal = 0;
1019          int    sort = BANK_ITFLAG_SORT_NAME;
1020         time_t  lastSeenAfter=0, lastSeenBefore=0;
1021
1022          int    flags;  // Iterator flags
1023          int    balValue;       // Balance value for iterator
1024         time_t  timeValue;      // Time value for iterator
1025
1026         // Parse arguments
1027         if( Args && strlen(Args) )
1028         {
1029                 char    *space = Args, *type, *val;
1030                 do
1031                 {
1032                         type = space;
1033                         while(*type == ' ')     type ++;
1034                         // Get next space
1035                         space = strchr(space, ' ');
1036                         if(space)       *space = '\0';
1037
1038                         // Get type
1039                         val = strchr(type, ':');
1040                         if( val ) {
1041                                 *val = '\0';
1042                                 val ++;
1043
1044                                 // Types
1045                                 // - Minium Balance
1046                                 if( strcmp(type, "min_balance") == 0 ) {
1047                                         minBal = atoi(val);
1048                                 }
1049                                 // - Maximum Balance
1050                                 else if( strcmp(type, "max_balance") == 0 ) {
1051                                         maxBal = atoi(val);
1052                                 }
1053                                 // - Flags
1054                                 else if( strcmp(type, "flags") == 0 ) {
1055                                         if( Server_int_ParseFlags(Client, val, &flagMask, &flagVal) )
1056                                                 return ;
1057                                 }
1058                                 // - Last seen before timestamp
1059                                 else if( strcmp(type, "last_seen_before") == 0 ) {
1060                                         lastSeenAfter = atoll(val);
1061                                 }
1062                                 // - Last seen after timestamp
1063                                 else if( strcmp(type, "last_seen_after") == 0 ) {
1064                                         lastSeenAfter = atoll(val);
1065                                 }
1066                                 // - Sorting
1067                                 else if( strcmp(type, "sort") == 0 ) {
1068                                         char    *dash = strchr(val, '-');
1069                                         if( dash ) {
1070                                                 *dash = '\0';
1071                                                 dash ++;
1072                                         }
1073                                         if( strcmp(val, "name") == 0 ) {
1074                                                 sort = BANK_ITFLAG_SORT_NAME;
1075                                         }
1076                                         else if( strcmp(val, "balance") == 0 ) {
1077                                                 sort = BANK_ITFLAG_SORT_BAL;
1078                                         }
1079                                         else if( strcmp(val, "lastseen") == 0 ) {
1080                                                 sort = BANK_ITFLAG_SORT_LASTSEEN;
1081                                         }
1082                                         else {
1083                                                 sendf(Client->Socket, "407 Unknown sort field ('%s')\n", val);
1084                                                 return ;
1085                                         }
1086                                         // Handle sort direction
1087                                         if( dash ) {
1088                                                 if( strcmp(dash, "desc") == 0 ) {
1089                                                         sort |= BANK_ITFLAG_REVSORT;
1090                                                 }
1091                                                 else {
1092                                                         sendf(Client->Socket, "407 Unknown sort direction '%s'\n", dash);
1093                                                         return ;
1094                                                 }
1095                                                 dash[-1] = '-';
1096                                         }
1097                                 }
1098                                 else {
1099                                         sendf(Client->Socket, "407 Unknown argument to ENUM_USERS '%s:%s'\n", type, val);
1100                                         return ;
1101                                 }
1102
1103                                 val[-1] = ':';
1104                         }
1105                         else {
1106                                 sendf(Client->Socket, "407 Unknown argument to ENUM_USERS '%s'\n", type);
1107                                 return ;
1108                         }
1109
1110                         // Eat whitespace
1111                         if( space ) {
1112                                 *space = ' ';   // Repair (to be nice)
1113                                 space ++;
1114                                 while(*space == ' ')    space ++;
1115                         }
1116                 }       while(space);
1117         }
1118
1119         // Create iterator
1120         if( maxBal != INT_MAX ) {
1121                 flags = sort|BANK_ITFLAG_MAXBALANCE;
1122                 balValue = maxBal;
1123         }
1124         else if( minBal != INT_MIN ) {
1125                 flags = sort|BANK_ITFLAG_MINBALANCE;
1126                 balValue = minBal;
1127         }
1128         else {
1129                 flags = sort;
1130                 balValue = 0;
1131         }
1132         if( lastSeenBefore ) {
1133                 timeValue = lastSeenBefore;
1134                 flags |= BANK_ITFLAG_SEENBEFORE;
1135         }
1136         else if( lastSeenAfter ) {
1137                 timeValue = lastSeenAfter;
1138                 flags |= BANK_ITFLAG_SEENAFTER;
1139         }
1140         else {
1141                 timeValue = 0;
1142         }
1143         it = Bank_Iterator(flagMask, flagVal, flags, balValue, timeValue);
1144
1145         // Get return number
1146         while( (i = Bank_IteratorNext(it)) != -1 )
1147         {
1148                 int bal = Bank_GetBalance(i);
1149
1150                 if( bal == INT_MIN )    continue;
1151
1152                 if( bal < minBal )      continue;
1153                 if( bal > maxBal )      continue;
1154
1155                 numRet ++;
1156         }
1157
1158         Bank_DelIterator(it);
1159
1160         // Send count
1161         sendf(Client->Socket, "201 Users %i\n", numRet);
1162
1163
1164         // Create iterator
1165         it = Bank_Iterator(flagMask, flagVal, flags, balValue, timeValue);
1166
1167         while( (i = Bank_IteratorNext(it)) != -1 )
1168         {
1169                 int bal = Bank_GetBalance(i);
1170
1171                 if( bal == INT_MIN )    continue;
1172
1173                 if( bal < minBal )      continue;
1174                 if( bal > maxBal )      continue;
1175
1176                 _SendUserInfo(Client, i);
1177         }
1178
1179         Bank_DelIterator(it);
1180
1181         sendf(Client->Socket, "200 List End\n");
1182 }
1183
1184 void Server_Cmd_USERINFO(tClient *Client, char *Args)
1185 {
1186          int    uid;
1187         char    *user;
1188
1189         // Parse arguments
1190         if( Server_int_ParseArgs(0, Args, &user, NULL) ) {
1191                 sendf(Client->Socket, "407 USER_INFO takes 1 argument\n");
1192                 return ;
1193         }
1194
1195         if( giDebugLevel )      Debug(Client, "User Info '%s'", user);
1196
1197         // Get recipient
1198         uid = Bank_GetAcctByName(user, 0);
1199
1200         if( giDebugLevel >= 2 ) Debug(Client, "uid = %i", uid);
1201         if( uid == -1 ) {
1202                 sendf(Client->Socket, "404 Invalid user\n");
1203                 return ;
1204         }
1205
1206         _SendUserInfo(Client, uid);
1207 }
1208
1209 void _SendUserInfo(tClient *Client, int UserID)
1210 {
1211         char    *type, *disabled="", *door="";
1212          int    flags = Bank_GetFlags(UserID);
1213
1214         if( flags & USER_FLAG_INTERNAL ) {
1215                 type = "internal";
1216         }
1217         else if( flags & USER_FLAG_COKE ) {
1218                 if( flags & USER_FLAG_ADMIN )
1219                         type = "coke,admin";
1220                 else
1221                         type = "coke";
1222         }
1223         else if( flags & USER_FLAG_ADMIN ) {
1224                 type = "admin";
1225         }
1226         else {
1227                 type = "user";
1228         }
1229
1230         if( flags & USER_FLAG_DISABLED )
1231                 disabled = ",disabled";
1232         if( flags & USER_FLAG_DOORGROUP )
1233                 door = ",door";
1234
1235         // TODO: User flags/type
1236         sendf(
1237                 Client->Socket, "202 User %s %i %s%s%s\n",
1238                 Bank_GetAcctName(UserID), Bank_GetBalance(UserID),
1239                 type, disabled, door
1240                 );
1241 }
1242
1243 void Server_Cmd_USERADD(tClient *Client, char *Args)
1244 {
1245         char    *username;
1246
1247         // Parse arguments
1248         if( Server_int_ParseArgs(0, Args, &username, NULL) ) {
1249                 sendf(Client->Socket, "407 USER_ADD takes 1 argument\n");
1250                 return ;
1251         }
1252
1253         // Check authentication
1254         if( !Client->bIsAuthed ) {
1255                 sendf(Client->Socket, "401 Not Authenticated\n");
1256                 return ;
1257         }
1258
1259         // Check permissions
1260         if( !(Bank_GetFlags(Client->UID) & USER_FLAG_ADMIN) ) {
1261                 sendf(Client->Socket, "403 Not a coke admin\n");
1262                 return ;
1263         }
1264
1265         // Try to create user
1266         if( Bank_CreateAcct(username) == -1 ) {
1267                 sendf(Client->Socket, "404 User exists\n");
1268                 return ;
1269         }
1270
1271         {
1272                 char    *thisName = Bank_GetAcctName(Client->UID);
1273                 Log_Info("Account '%s' created by '%s'", username, thisName);
1274                 free(thisName);
1275         }
1276
1277         sendf(Client->Socket, "200 User Added\n");
1278 }
1279
1280 void Server_Cmd_USERFLAGS(tClient *Client, char *Args)
1281 {
1282         char    *username, *flags, *reason=NULL;
1283          int    mask=0, value=0;
1284          int    uid;
1285
1286         // Parse arguments
1287         if( Server_int_ParseArgs(1, Args, &username, &flags, &reason, NULL) ) {
1288                 if( !flags ) {
1289                         sendf(Client->Socket, "407 USER_FLAGS takes at least 2 arguments\n");
1290                         return ;
1291                 }
1292                 reason = "";
1293         }
1294
1295         // Check authentication
1296         if( !Client->bIsAuthed ) {
1297                 sendf(Client->Socket, "401 Not Authenticated\n");
1298                 return ;
1299         }
1300
1301         // Check permissions
1302         if( !(Bank_GetFlags(Client->UID) & USER_FLAG_ADMIN) ) {
1303                 sendf(Client->Socket, "403 Not a coke admin\n");
1304                 return ;
1305         }
1306
1307         // Get UID
1308         uid = Bank_GetAcctByName(username, 0);
1309         if( uid == -1 ) {
1310                 sendf(Client->Socket, "404 User '%s' not found\n", username);
1311                 return ;
1312         }
1313
1314         // Parse flags
1315         if( Server_int_ParseFlags(Client, flags, &mask, &value) )
1316                 return ;
1317
1318         if( giDebugLevel )
1319                 Debug(Client, "Set %i(%s) flags to %x (masked %x)\n",
1320                         uid, username, mask, value);
1321
1322         // Apply flags
1323         Bank_SetFlags(uid, mask, value);
1324
1325         // Log the change
1326         Log_Info("Updated '%s' with flag set '%s' - Reason: %s",
1327                 username, flags, reason);
1328
1329         // Return OK
1330         sendf(Client->Socket, "200 User Updated\n");
1331 }
1332
1333 void Server_Cmd_UPDATEITEM(tClient *Client, char *Args)
1334 {
1335         char    *itemname, *price_str, *description;
1336          int    price;
1337         tItem   *item;
1338
1339         if( Server_int_ParseArgs(1, Args, &itemname, &price_str, &description, NULL) ) {
1340                 sendf(Client->Socket, "407 UPDATE_ITEM takes 3 arguments\n");
1341                 return ;
1342         }
1343
1344         if( !Client->bIsAuthed ) {
1345                 sendf(Client->Socket, "401 Not Authenticated\n");
1346                 return ;
1347         }
1348
1349         // Check user permissions
1350         if( !(Bank_GetFlags(Client->UID) & (USER_FLAG_COKE|USER_FLAG_ADMIN))  ) {
1351                 sendf(Client->Socket, "403 Not in coke\n");
1352                 return ;
1353         }
1354
1355         item = _GetItemFromString(itemname);
1356         if( !item ) {
1357                 // TODO: Create item?
1358                 sendf(Client->Socket, "406 Bad Item ID\n");
1359                 return ;
1360         }
1361
1362         price = atoi(price_str);
1363         if( price <= 0 && price_str[0] != '0' ) {
1364                 sendf(Client->Socket, "407 Invalid price set\n");
1365         }
1366
1367         switch( DispenseUpdateItem( Client->UID, item, description, price ) )
1368         {
1369         case 0:
1370                 // Return OK
1371                 sendf(Client->Socket, "200 Item updated\n");
1372                 break;
1373         default:
1374                 break;
1375         }
1376 }
1377
1378 // --- INTERNAL HELPERS ---
1379 void Debug(tClient *Client, const char *Format, ...)
1380 {
1381         va_list args;
1382         //printf("%010i [%i] ", (int)time(NULL), Client->ID);
1383         printf("[%i] ", Client->ID);
1384         va_start(args, Format);
1385         vprintf(Format, args);
1386         va_end(args);
1387         printf("\n");
1388 }
1389
1390 int sendf(int Socket, const char *Format, ...)
1391 {
1392         va_list args;
1393          int    len;
1394
1395         va_start(args, Format);
1396         len = vsnprintf(NULL, 0, Format, args);
1397         va_end(args);
1398
1399         {
1400                 char    buf[len+1];
1401                 va_start(args, Format);
1402                 vsnprintf(buf, len+1, Format, args);
1403                 va_end(args);
1404
1405                 #if DEBUG_TRACE_CLIENT
1406                 printf("sendf: %s", buf);
1407                 #endif
1408
1409                 return send(Socket, buf, len, 0);
1410         }
1411 }
1412
1413 // Takes a series of char *'s in
1414 /**
1415  * \brief Parse space-separated entries into
1416  */
1417 int Server_int_ParseArgs(int bUseLongLast, char *ArgStr, ...)
1418 {
1419         va_list args;
1420         char    savedChar;
1421         char    **dest;
1422         va_start(args, ArgStr);
1423
1424         // Check for null
1425         if( !ArgStr )
1426         {
1427                 while( (dest = va_arg(args, char **)) )
1428                         *dest = NULL;
1429                 va_end(args);
1430                 return 1;
1431         }
1432
1433         savedChar = *ArgStr;
1434
1435         while( (dest = va_arg(args, char **)) )
1436         {
1437                 // Trim leading spaces
1438                 while( *ArgStr == ' ' || *ArgStr == '\t' )
1439                         ArgStr ++;
1440
1441                 // ... oops, not enough arguments
1442                 if( *ArgStr == '\0' )
1443                 {
1444                         // NULL unset arguments
1445                         do {
1446                                 *dest = NULL;
1447                         }       while( (dest = va_arg(args, char **)) );
1448                 va_end(args);
1449                         return -1;
1450                 }
1451
1452                 if( *ArgStr == '"' )
1453                 {
1454                         ArgStr ++;
1455                         *dest = ArgStr;
1456                         // Read until quote
1457                         while( *ArgStr && *ArgStr != '"' )
1458                                 ArgStr ++;
1459                 }
1460                 else
1461                 {
1462                         // Set destination
1463                         *dest = ArgStr;
1464                         // Read until a space
1465                         while( *ArgStr && *ArgStr != ' ' && *ArgStr != '\t' )
1466                                 ArgStr ++;
1467                 }
1468                 savedChar = *ArgStr;    // savedChar is used to un-mangle the last string
1469                 *ArgStr = '\0';
1470                 ArgStr ++;
1471         }
1472         va_end(args);
1473
1474         // Oops, extra arguments, and greedy not set
1475         if( (savedChar == ' ' || savedChar == '\t') && !bUseLongLast ) {
1476                 return -1;
1477         }
1478
1479         // Un-mangle last
1480         if(bUseLongLast) {
1481                 ArgStr --;
1482                 *ArgStr = savedChar;
1483         }
1484
1485         return 0;       // Success!
1486 }
1487
1488 int Server_int_ParseFlags(tClient *Client, const char *Str, int *Mask, int *Value)
1489 {
1490         struct {
1491                 const char      *Name;
1492                  int    Mask;
1493                  int    Value;
1494         }       cFLAGS[] = {
1495                  {"disabled", USER_FLAG_DISABLED, USER_FLAG_DISABLED}
1496                 ,{"door", USER_FLAG_DOORGROUP, USER_FLAG_DOORGROUP}
1497                 ,{"coke", USER_FLAG_COKE, USER_FLAG_COKE}
1498                 ,{"admin", USER_FLAG_ADMIN, USER_FLAG_ADMIN}
1499                 ,{"internal", USER_FLAG_INTERNAL, USER_FLAG_INTERNAL}
1500         };
1501         const int       ciNumFlags = sizeof(cFLAGS)/sizeof(cFLAGS[0]);
1502
1503         char    *space;
1504
1505         *Mask = 0;
1506         *Value = 0;
1507
1508         do {
1509                  int    bRemove = 0;
1510                  int    i;
1511                  int    len;
1512
1513                 while( *Str == ' ' )    Str ++; // Eat whitespace
1514                 space = strchr(Str, ',');       // Find the end of the flag
1515                 if(space)
1516                         len = space - Str;
1517                 else
1518                         len = strlen(Str);
1519
1520                 // Check for inversion/removal
1521                 if( *Str == '!' || *Str == '-' ) {
1522                         bRemove = 1;
1523                         Str ++;
1524                 }
1525                 else if( *Str == '+' ) {
1526                         Str ++;
1527                 }
1528
1529                 // Check flag values
1530                 for( i = 0; i < ciNumFlags; i ++ )
1531                 {
1532                         if( strncmp(Str, cFLAGS[i].Name, len) == 0 ) {
1533                                 *Mask |= cFLAGS[i].Mask;
1534                                 *Value &= ~cFLAGS[i].Mask;
1535                                 if( !bRemove )
1536                                         *Value |= cFLAGS[i].Value;
1537                                 break;
1538                         }
1539                 }
1540
1541                 // Error check
1542                 if( i == ciNumFlags ) {
1543                         char    val[len+1];
1544                         strncpy(val, Str, len+1);
1545                         sendf(Client->Socket, "407 Unknown flag value '%s'\n", val);
1546                         return -1;
1547                 }
1548
1549                 Str = space + 1;
1550         } while(space);
1551
1552         return 0;
1553 }