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>     // Signal handling
  22 #include <ident.h>      // AUTHIDENT
  23 #include <time.h>       // time(2)
  24
  25 #define DEBUG_TRACE_CLIENT      0
  26 #define HACK_NO_REFUNDS 1
  27
  28 // Statistics
  29 #define MAX_CONNECTION_QUEUE    5
  30 #define INPUT_BUFFER_SIZE       256
  31 #define CLIENT_TIMEOUT  10      // Seconds
  32
  33 #define HASH_TYPE       SHA1
  34 #define HASH_LENGTH     20
  35
  36 #define MSG_STR_TOO_LONG        "499 Command too long (limit "EXPSTR(INPUT_BUFFER_SIZE)")\n"
  37
  38 #define IDENT_TRUSTED_NETWORK 0x825F0D00
  39 #define IDENT_TRUSTED_NETMASK 0xFFFFFFC0
  40
  41 // === TYPES ===
  42 typedef struct sClient
  43 {
  44          int    Socket; // Client socket ID
  45          int    ID;     // Client ID
  46
  47          int    bIsTrusted;     // Is the connection from a trusted host/port
  48
  49         char    *Username;
  50         char    Salt[9];
  51
  52          int    UID;
  53          int    EffectiveUID;
  54          int    bIsAuthed;
  55 }       tClient;
  56
  57 // === PROTOTYPES ===
  58 void    Server_Start(void);
  59 void    Server_Cleanup(void);
  60 void    Server_HandleClient(int Socket, int bTrusted);
  61 void    Server_ParseClientCommand(tClient *Client, char *CommandString);
  62 // --- Commands ---
  63 void    Server_Cmd_USER(tClient *Client, char *Args);
  64 void    Server_Cmd_PASS(tClient *Client, char *Args);
  65 void    Server_Cmd_AUTOAUTH(tClient *Client, char *Args);
  66 void    Server_Cmd_AUTHIDENT(tClient *Client, char *Args);
  67 void    Server_Cmd_SETEUSER(tClient *Client, char *Args);
  68 void    Server_Cmd_ENUMITEMS(tClient *Client, char *Args);
  69 void    Server_Cmd_ITEMINFO(tClient *Client, char *Args);
  70 void    Server_Cmd_DISPENSE(tClient *Client, char *Args);
  71 void    Server_Cmd_REFUND(tClient *Client, char *Args);
  72 void    Server_Cmd_GIVE(tClient *Client, char *Args);
  73 void    Server_Cmd_DONATE(tClient *Client, char *Args);
  74 void    Server_Cmd_ADD(tClient *Client, char *Args);
  75 void    Server_Cmd_SET(tClient *Client, char *Args);
  76 void    Server_Cmd_ENUMUSERS(tClient *Client, char *Args);
  77 void    Server_Cmd_USERINFO(tClient *Client, char *Args);
  78 void    _SendUserInfo(tClient *Client, int UserID);
  79 void    Server_Cmd_USERADD(tClient *Client, char *Args);
  80 void    Server_Cmd_USERFLAGS(tClient *Client, char *Args);
  81 void    Server_Cmd_UPDATEITEM(tClient *Client, char *Args);
  82 // --- Helpers ---
  83 void    Debug(tClient *Client, const char *Format, ...);
  84  int    sendf(int Socket, const char *Format, ...);
  85  int    Server_int_ParseArgs(int bUseLongArg, char *ArgStr, ...);
  86  int    Server_int_ParseFlags(tClient *Client, const char *Str, int *Mask, int *Value);
  87
  88 // === CONSTANTS ===
  89 // - Commands
  90 const struct sClientCommand {
  91         const char      *Name;
  92         void    (*Function)(tClient *Client, char *Arguments);
  93 }       gaServer_Commands[] = {
  94         {"USER", Server_Cmd_USER},
  95         {"PASS", Server_Cmd_PASS},
  96         {"AUTOAUTH", Server_Cmd_AUTOAUTH},
  97         {"AUTHIDENT", Server_Cmd_AUTHIDENT},
  98         {"SETEUSER", Server_Cmd_SETEUSER},
  99         {"ENUM_ITEMS", Server_Cmd_ENUMITEMS},
 100         {"ITEM_INFO", Server_Cmd_ITEMINFO},
 101         {"DISPENSE", Server_Cmd_DISPENSE},
 102         {"REFUND", Server_Cmd_REFUND},
 103         {"GIVE", Server_Cmd_GIVE},
 104         {"DONATE", Server_Cmd_DONATE},
 105         {"ADD", Server_Cmd_ADD},
 106         {"SET", Server_Cmd_SET},
 107         {"ENUM_USERS", Server_Cmd_ENUMUSERS},
 108         {"USER_INFO", Server_Cmd_USERINFO},
 109         {"USER_ADD", Server_Cmd_USERADD},
 110         {"USER_FLAGS", Server_Cmd_USERFLAGS},
 111         {"UPDATE_ITEM", Server_Cmd_UPDATEITEM}
 112 };
 113 #define NUM_COMMANDS    ((int)(sizeof(gaServer_Commands)/sizeof(gaServer_Commands[0])))
 114
 115 // === GLOBALS ===
 116 // - Configuration
 117  int    giServer_Port = 11020;
 118  int    gbServer_RunInBackground = 0;
 119 char    *gsServer_LogFile = "/var/log/dispsrv.log";
 120 char    *gsServer_ErrorLog = "/var/log/dispsrv.err";
 121 // - State variables
 122  int    giServer_Socket;        // Server socket
 123  int    giServer_NextClientID = 1;      // Debug client ID
 124
 125
 126 // === CODE ===
 127 /**
 128  * \brief Open listenting socket and serve connections
 129  */
 130 void Server_Start(void)
 131 {
 132          int    client_socket;
 133         struct sockaddr_in      server_addr, client_addr;
 134
 135         atexit(Server_Cleanup);
 136         // Ignore SIGPIPE (stops crashes when the client exits early)
 137         signal(SIGPIPE, SIG_IGN);
 138
 139         // Create Server
 140         giServer_Socket = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);
 141         if( giServer_Socket < 0 ) {
 142                 fprintf(stderr, "ERROR: Unable to create server socket\n");
 143                 return ;
 144         }
 145
 146         // Make listen address
 147         memset(&server_addr, 0, sizeof(server_addr));
 148         server_addr.sin_family = AF_INET;       // Internet Socket
 149         server_addr.sin_addr.s_addr = htonl(INADDR_ANY);        // Listen on all interfaces
 150         server_addr.sin_port = htons(giServer_Port);    // Port
 151
 152         // Bind
 153         if( bind(giServer_Socket, (struct sockaddr *) &server_addr, sizeof(server_addr)) < 0 ) {
 154                 fprintf(stderr, "ERROR: Unable to bind to 0.0.0.0:%i\n", giServer_Port);
 155                 perror("Binding");
 156                 return ;
 157         }
 158
 159         // Fork into background
 160         if( gbServer_RunInBackground )
 161         {
 162                 int pid = fork();
 163                 if( pid == -1 ) {
 164                         fprintf(stderr, "ERROR: Unable to fork\n");
 165                         perror("fork background");
 166                         exit(-1);
 167                 }
 168                 if( pid != 0 ) {
 169                         // Parent, quit
 170                         printf("Forked child %i\n", pid);
 171                         exit(0);
 172                 }
 173                 // In child
 174                 // - Sort out stdin/stdout
 175                 #if 0
 176                 dup2( open("/dev/null", O_RDONLY, 0644), STDIN_FILENO );
 177                 dup2( open(gsServer_LogFile, O_CREAT|O_APPEND, 0644), STDOUT_FILENO );
 178                 dup2( open(gsServer_ErrorLog, O_CREAT|O_APPEND, 0644), STDERR_FILENO );
 179                 #else
 180                 freopen("/dev/null", "r", stdin);
 181                 freopen(gsServer_LogFile, "a", stdout);
 182                 freopen(gsServer_ErrorLog, "a", stderr);
 183                 fprintf(stdout, "OpenDispense 2 Server Started at %lld\n", (long long)time(NULL));
 184                 fprintf(stderr, "OpenDispense 2 Server Started at %lld\n", (long long)time(NULL));
 185                 #endif
 186         }
 187
 188         // Start the helper thread
 189         StartPeriodicThread();
 190
 191         // Listen
 192         if( listen(giServer_Socket, MAX_CONNECTION_QUEUE) < 0 ) {
 193                 fprintf(stderr, "ERROR: Unable to listen to socket\n");
 194                 perror("Listen");
 195                 return ;
 196         }
 197
 198         printf("Listening on 0.0.0.0:%i\n", giServer_Port);
 199
 200         // write pidfile
 201         {
 202                 FILE *fp = fopen("/var/run/dispsrv.pid", "w");
 203                 if( fp ) {
 204                         fprintf(fp, "%i", getpid());
 205                         fclose(fp);
 206                 }
 207         }
 208
 209         for(;;)
 210         {
 211                 uint    len = sizeof(client_addr);
 212                  int    bTrusted = 0;
 213
 214                 // Accept a connection
 215                 client_socket = accept(giServer_Socket, (struct sockaddr *) &client_addr, &len);
 216                 if(client_socket < 0) {
 217                         fprintf(stderr, "ERROR: Unable to accept client connection\n");
 218                         return ;
 219                 }
 220
 221                 // Set a timeout on the user conneciton
 222                 {
 223                         struct timeval tv;
 224                         tv.tv_sec = CLIENT_TIMEOUT;
 225                         tv.tv_usec = 0;
 226                         if( setsockopt(client_socket, SOL_SOCKET, SO_RCVTIMEO, &tv, sizeof(tv)) )
 227                         {
 228                                 perror("setsockopt");
 229                                 return ;
 230                         }
 231                 }
 232
 233                 // Debug: Print the connection string
 234                 if(giDebugLevel >= 2) {
 235                         char    ipstr[INET_ADDRSTRLEN];
 236                         inet_ntop(AF_INET, &client_addr.sin_addr, ipstr, INET_ADDRSTRLEN);
 237                         printf("Client connection from %s:%i\n",
 238                                 ipstr, ntohs(client_addr.sin_port));
 239                 }
 240
 241                 // Doesn't matter what, localhost is trusted
 242                 if( ntohl( client_addr.sin_addr.s_addr ) == 0x7F000001 )
 243                         bTrusted = 1;
 244
 245                 // Trusted Connections
 246                 if( ntohs(client_addr.sin_port) < 1024 )
 247                 {
 248                         // TODO: Make this runtime configurable
 249                         switch( ntohl( client_addr.sin_addr.s_addr ) )
 250                         {
 251                         case 0x7F000001:        // 127.0.0.1    localhost
 252                 //      case 0x825F0D00:        // 130.95.13.0
 253                         case 0x825F0D04:        // 130.95.13.4  merlo
 254                 //      case 0x825F0D05:        // 130.95.13.5  heathred (MR)
 255                         case 0x825F0D07:        // 130.95.13.7  motsugo
 256                         case 0x825F0D11:        // 130.95.13.17 mermaid
 257                         case 0x825F0D12:        // 130.95.13.18 mussel
 258                         case 0x825F0D17:        // 130.95.13.23 martello
 259                         case 0x825F0D2A:        // 130.95.13.42 meersau
 260                 //      case 0x825F0D42:        // 130.95.13.66 heathred (Clubroom)
 261                                 bTrusted = 1;
 262                                 break;
 263                         default:
 264                                 break;
 265                         }
 266                 }
 267
 268                 // TODO: Multithread this?
 269                 Server_HandleClient(client_socket, bTrusted);
 270
 271                 close(client_socket);
 272         }
 273 }
 274
 275 void Server_Cleanup(void)
 276 {
 277         printf("\nClose(%i)\n", giServer_Socket);
 278         close(giServer_Socket);
 279         unlink("/var/run/dispsrv.pid");
 280 }
 281
 282 /**
 283  * \brief Reads from a client socket and parses the command strings
 284  * \param Socket        Client socket number/handle
 285  * \param bTrusted      Is the client trusted?
 286  */
 287 void Server_HandleClient(int Socket, int bTrusted)
 288 {
 289         char    inbuf[INPUT_BUFFER_SIZE];
 290         char    *buf = inbuf;
 291          int    remspace = INPUT_BUFFER_SIZE-1;
 292          int    bytes = -1;
 293         tClient clientInfo;
 294
 295         memset(&clientInfo, 0, sizeof(clientInfo));
 296
 297         // Initialise Client info
 298         clientInfo.Socket = Socket;
 299         clientInfo.ID = giServer_NextClientID ++;
 300         clientInfo.bIsTrusted = bTrusted;
 301         clientInfo.EffectiveUID = -1;
 302
 303         // Read from client
 304         /*
 305          * Notes:
 306          * - The `buf` and `remspace` variables allow a line to span several
 307          *   calls to recv(), if a line is not completed in one recv() call
 308          *   it is saved to the beginning of `inbuf` and `buf` is updated to
 309          *   the end of it.
 310          */
 311         // TODO: Use select() instead (to give a timeout)
 312         while( (bytes = recv(Socket, buf, remspace, 0)) > 0 )
 313         {
 314                 char    *eol, *start;
 315                 buf[bytes] = '\0';      // Allow us to use stdlib string functions on it
 316
 317                 // Split by lines
 318                 start = inbuf;
 319                 while( (eol = strchr(start, '\n')) )
 320                 {
 321                         *eol = '\0';
 322
 323                         Server_ParseClientCommand(&clientInfo, start);
 324
 325                         start = eol + 1;
 326                 }
 327
 328                 // Check if there was an incomplete line
 329                 if( *start != '\0' ) {
 330                          int    tailBytes = bytes - (start-buf);
 331                         // Roll back in buffer
 332                         memcpy(inbuf, start, tailBytes);
 333                         remspace -= tailBytes;
 334                         if(remspace == 0) {
 335                                 send(Socket, MSG_STR_TOO_LONG, sizeof(MSG_STR_TOO_LONG), 0);
 336                                 buf = inbuf;
 337                                 remspace = INPUT_BUFFER_SIZE - 1;
 338                         }
 339                 }
 340                 else {
 341                         buf = inbuf;
 342                         remspace = INPUT_BUFFER_SIZE - 1;
 343                 }
 344         }
 345
 346         // Check for errors
 347         if( bytes < 0 ) {
 348                 fprintf(stderr, "ERROR: Unable to recieve from client on socket %i\n", Socket);
 349                 return ;
 350         }
 351
 352         if(giDebugLevel >= 2) {
 353                 printf("Client %i: Disconnected\n", clientInfo.ID);
 354         }
 355 }
 356
 357 /**
 358  * \brief Parses a client command and calls the required helper function
 359  * \param Client        Pointer to client state structure
 360  * \param CommandString Command from client (single line of the command)
 361  * \return Heap String to return to the client
 362  */
 363 void Server_ParseClientCommand(tClient *Client, char *CommandString)
 364 {
 365         char    *command, *args;
 366          int    i;
 367
 368         if( giDebugLevel >= 2 )
 369                 Debug(Client, "Server_ParseClientCommand: (CommandString = '%s')", CommandString);
 370
 371         if( Server_int_ParseArgs(1, CommandString, &command, &args, NULL) )
 372         {
 373                 if( command == NULL )   return ;
 374                 // Is this an error? (just ignore for now)
 375         }
 376
 377
 378         // Find command
 379         for( i = 0; i < NUM_COMMANDS; i++ )
 380         {
 381                 if(strcmp(command, gaServer_Commands[i].Name) == 0) {
 382                         if( giDebugLevel >= 2 )
 383                                 Debug(Client, "CMD %s - \"%s\"", command, args);
 384                         gaServer_Commands[i].Function(Client, args);
 385                         return ;
 386                 }
 387         }
 388
 389         sendf(Client->Socket, "400 Unknown Command\n");
 390 }
 391
 392 // ---
 393 // Commands
 394 // ---
 395 /**
 396  * \brief Set client username
 397  *
 398  * Usage: USER <username>
 399  */
 400 void Server_Cmd_USER(tClient *Client, char *Args)
 401 {
 402         char    *username;
 403
 404         if( Server_int_ParseArgs(0, Args, &username, NULL) )
 405         {
 406                 sendf(Client->Socket, "407 USER takes 1 argument\n");
 407                 return ;
 408         }
 409
 410         // Debug!
 411         if( giDebugLevel )
 412                 Debug(Client, "Authenticating as '%s'", username);
 413
 414         // Save username
 415         if(Client->Username)
 416                 free(Client->Username);
 417         Client->Username = strdup(username);
 418
 419         #if USE_SALT
 420         // Create a salt (that changes if the username is changed)
 421         // Yes, I know, I'm a little paranoid, but who isn't?
 422         Client->Salt[0] = 0x21 + (rand()&0x3F);
 423         Client->Salt[1] = 0x21 + (rand()&0x3F);
 424         Client->Salt[2] = 0x21 + (rand()&0x3F);
 425         Client->Salt[3] = 0x21 + (rand()&0x3F);
 426         Client->Salt[4] = 0x21 + (rand()&0x3F);
 427         Client->Salt[5] = 0x21 + (rand()&0x3F);
 428         Client->Salt[6] = 0x21 + (rand()&0x3F);
 429         Client->Salt[7] = 0x21 + (rand()&0x3F);
 430
 431         // TODO: Also send hash type to use, (SHA1 or crypt according to [DAA])
 432         sendf(Client->Socket, "100 SALT %s\n", Client->Salt);
 433         #else
 434         sendf(Client->Socket, "100 User Set\n");
 435         #endif
 436 }
 437
 438 /**
 439  * \brief Authenticate as a user
 440  *
 441  * Usage: PASS <hash>
 442  */
 443 void Server_Cmd_PASS(tClient *Client, char *Args)
 444 {
 445         char    *passhash;
 446          int    flags;
 447
 448         if( Server_int_ParseArgs(0, Args, &passhash, NULL) )
 449         {
 450                 sendf(Client->Socket, "407 PASS takes 1 argument\n");
 451                 return ;
 452         }
 453
 454         // Pass on to cokebank
 455         Client->UID = Bank_GetUserAuth(Client->Salt, Client->Username, passhash);
 456
 457         if( Client->UID == -1 ) {
 458                 sendf(Client->Socket, "401 Auth Failure\n");
 459                 return ;
 460         }
 461
 462         flags = Bank_GetFlags(Client->UID);
 463         if( flags & USER_FLAG_DISABLED ) {
 464                 Client->UID = -1;
 465                 sendf(Client->Socket, "403 Account Disabled\n");
 466                 return ;
 467         }
 468         if( flags & USER_FLAG_INTERNAL ) {
 469                 Client->UID = -1;
 470                 sendf(Client->Socket, "403 Internal account\n");
 471                 return ;
 472         }
 473
 474         Client->bIsAuthed = 1;
 475         sendf(Client->Socket, "200 Auth OK\n");
 476 }
 477
 478 /**
 479  * \brief Authenticate as a user without a password
 480  *
 481  * Usage: AUTOAUTH <user>
 482  */
 483 void Server_Cmd_AUTOAUTH(tClient *Client, char *Args)
 484 {
 485         char    *username;
 486          int    userflags;
 487
 488         if( Server_int_ParseArgs(0, Args, &username, NULL) )
 489         {
 490                 sendf(Client->Socket, "407 AUTOAUTH takes 1 argument\n");
 491                 return ;
 492         }
 493
 494         // Check if trusted
 495         if( !Client->bIsTrusted ) {
 496                 if(giDebugLevel)
 497                         Debug(Client, "Untrusted client attempting to AUTOAUTH");
 498                 sendf(Client->Socket, "401 Untrusted\n");
 499                 return ;
 500         }
 501
 502         // Get UID
 503         Client->UID = Bank_GetAcctByName( username, 0 );
 504         if( Client->UID < 0 ) {
 505                 if(giDebugLevel)
 506                         Debug(Client, "Unknown user '%s'", username);
 507                 sendf(Client->Socket, "403 Auth Failure\n");
 508                 return ;
 509         }
 510
 511         userflags = Bank_GetFlags(Client->UID);
 512         // You can't be an internal account
 513         if( userflags & USER_FLAG_INTERNAL ) {
 514                 if(giDebugLevel)
 515                         Debug(Client, "Autoauth as '%s', not allowed", username);
 516                 Client->UID = -1;
 517                 sendf(Client->Socket, "403 Account is internal\n");
 518                 return ;
 519         }
 520
 521         // Disabled accounts
 522         if( userflags & USER_FLAG_DISABLED ) {
 523                 Client->UID = -1;
 524                 sendf(Client->Socket, "403 Account disabled\n");
 525                 return ;
 526         }
 527
 528         // Save username
 529         if(Client->Username)
 530                 free(Client->Username);
 531         Client->Username = strdup(username);
 532
 533         Client->bIsAuthed = 1;
 534
 535         if(giDebugLevel)
 536                 Debug(Client, "Auto authenticated as '%s' (%i)", username, Client->UID);
 537
 538         sendf(Client->Socket, "200 Auth OK\n");
 539 }
 540
 541 /**
 542  * \brief Authenticate as a user using the IDENT protocol
 543  *
 544  * Usage: AUTHIDENT
 545  */
 546 void Server_Cmd_AUTHIDENT(tClient *Client, char *Args)
 547 {
 548         char    *username;
 549          int    userflags;
 550         const int ident_timeout = 5;
 551         socklen_t len;
 552         struct sockaddr_in client_addr;
 553         uint32_t  client_ip;
 554
 555         if( Args != NULL && strlen(Args) ) {
 556                 sendf(Client->Socket, "407 AUTHIDENT takes no arguments\n");
 557                 return ;
 558         }
 559
 560         // Check if trusted (only works with INET sockets at present)
 561         len = sizeof(client_addr);
 562         if( getpeername(Client->Socket, (struct sockaddr*)&client_addr, &len) == -1 ) {
 563                 Debug(Client, "500 getpeername() failed\n");
 564                 perror("Getting AUTHIDENT peer name");
 565                 sendf(Client->Socket, "500 getpeername() failed\n");
 566                 return ;
 567         }
 568
 569         client_ip = client_addr.sin_addr.s_addr;
 570         if(giDebugLevel >= 2) {
 571                 Debug(Client, "client_ip = %x, ntohl(client_ip) = %x", client_ip, ntohl(client_ip));
 572         }
 573         if( ntohl(client_ip) != 0x7F000001 && (ntohl(client_ip) & IDENT_TRUSTED_NETMASK) != IDENT_TRUSTED_NETWORK ) {
 574                         if(giDebugLevel)
 575                                 Debug(Client, "Untrusted client attempting to AUTHIDENT");
 576                         sendf(Client->Socket, "401 Untrusted\n");
 577                         return ;
 578         }
 579
 580         // Get username via IDENT
 581         username = ident_id(Client->Socket, ident_timeout);
 582         if( !username ) {
 583                 sendf(Client->Socket, "403 Authentication failure: IDENT auth timed out\n");
 584                 return ;
 585         }
 586
 587         // Get UID
 588         Client->UID = Bank_GetAcctByName( username, 0 );
 589         if( Client->UID < 0 ) {
 590                 if(giDebugLevel)
 591                         Debug(Client, "Unknown user '%s'", username);
 592                 sendf(Client->Socket, "403 Authentication failure: unknown account\n");
 593                 free(username);
 594                 return ;
 595         }
 596
 597         userflags = Bank_GetFlags(Client->UID);
 598         // You can't be an internal account
 599         if( userflags & USER_FLAG_INTERNAL ) {
 600                 if(giDebugLevel)
 601                         Debug(Client, "IDENT auth as '%s', not allowed", username);
 602                 Client->UID = -1;
 603                 sendf(Client->Socket, "403 Authentication failure: that account is internal\n");
 604                 free(username);
 605                 return ;
 606         }
 607
 608         // Disabled accounts
 609         if( userflags & USER_FLAG_DISABLED ) {
 610                 Client->UID = -1;
 611                 sendf(Client->Socket, "403 Authentication failure: account disabled\n");
 612                 free(username);
 613                 return ;
 614         }
 615
 616         // Save username
 617         if(Client->Username)
 618                 free(Client->Username);
 619         Client->Username = strdup(username);
 620
 621         Client->bIsAuthed = 1;
 622
 623         if(giDebugLevel)
 624                 Debug(Client, "IDENT authenticated as '%s' (%i)", username, Client->UID);
 625         free(username);
 626
 627         sendf(Client->Socket, "200 Auth OK\n");
 628 }
 629
 630 /**
 631  * \brief Set effective user
 632  */
 633 void Server_Cmd_SETEUSER(tClient *Client, char *Args)
 634 {
 635         char    *username;
 636          int    eUserFlags, userFlags;
 637
 638         if( Server_int_ParseArgs(0, Args, &username, NULL) )
 639         {
 640                 sendf(Client->Socket, "407 SETEUSER takes 1 argument\n");
 641                 return ;
 642         }
 643
 644         if( !strlen(Args) ) {
 645                 sendf(Client->Socket, "407 SETEUSER expects an argument\n");
 646                 return ;
 647         }
 648
 649         // Check authentication
 650         if( !Client->bIsAuthed ) {
 651                 sendf(Client->Socket, "401 Not Authenticated\n");
 652                 return ;
 653         }
 654
 655         // Check user permissions
 656         userFlags = Bank_GetFlags(Client->UID);
 657         if( !(userFlags & (USER_FLAG_COKE|USER_FLAG_ADMIN)) ) {
 658                 sendf(Client->Socket, "403 Not in coke\n");
 659                 return ;
 660         }
 661
 662         // Set id
 663         Client->EffectiveUID = Bank_GetAcctByName(username, 0);
 664         if( Client->EffectiveUID == -1 ) {
 665                 sendf(Client->Socket, "404 User not found\n");
 666                 return ;
 667         }
 668
 669         // You can't be an internal account
 670         if( !(userFlags & USER_FLAG_ADMIN) )
 671         {
 672                 eUserFlags = Bank_GetFlags(Client->EffectiveUID);
 673                 if( eUserFlags & USER_FLAG_INTERNAL ) {
 674                         Client->EffectiveUID = -1;
 675                         sendf(Client->Socket, "404 User not found\n");
 676                         return ;
 677                 }
 678                 // Disabled only avaliable to admins
 679                 if( eUserFlags & USER_FLAG_DISABLED ) {
 680                         Client->EffectiveUID = -1;
 681                         sendf(Client->Socket, "403 Account disabled\n");
 682                         return ;
 683                 }
 684         }
 685
 686         // Disabled accounts
 687         if( userFlags & USER_FLAG_DISABLED ) {
 688                 Client->UID = -1;
 689                 sendf(Client->Socket, "403 Account disabled\n");
 690                 return ;
 691         }
 692
 693         sendf(Client->Socket, "200 User set\n");
 694 }
 695
 696 /**
 697  * \brief Send an item status to the client
 698  * \param Client        Who to?
 699  * \param Item  Item to send
 700  */
 701 void Server_int_SendItem(tClient *Client, tItem *Item)
 702 {
 703         char    *status = "avail";
 704
 705         if( Item->Handler->CanDispense )
 706         {
 707                 switch(Item->Handler->CanDispense(Client->UID, Item->ID))
 708                 {
 709                 case  0:        status = "avail";       break;
 710                 case  1:        status = "sold";        break;
 711                 default:
 712                 case -1:        status = "error";       break;
 713                 }
 714         }
 715
 716         // KNOWN HACK: Naming a slot 'dead' disables it
 717         if( strcmp(Item->Name, "dead") == 0 )
 718                 status = "sold";        // Another status?
 719
 720         sendf(Client->Socket,
 721                 "202 Item %s:%i %s %i %s\n",
 722                 Item->Handler->Name, Item->ID, status, Item->Price, Item->Name
 723                 );
 724 }
 725
 726 /**
 727  * \brief Enumerate the items that the server knows about
 728  */
 729 void Server_Cmd_ENUMITEMS(tClient *Client, char *Args)
 730 {
 731          int    i, count;
 732
 733         if( Args != NULL && strlen(Args) ) {
 734                 sendf(Client->Socket, "407 ENUM_ITEMS takes no arguments\n");
 735                 return ;
 736         }
 737
 738         // Count shown items
 739         count = 0;
 740         for( i = 0; i < giNumItems; i ++ ) {
 741                 if( gaItems[i].bHidden )        continue;
 742                 count ++;
 743         }
 744
 745         sendf(Client->Socket, "201 Items %i\n", count);
 746
 747         for( i = 0; i < giNumItems; i ++ ) {
 748                 if( gaItems[i].bHidden )        continue;
 749                 Server_int_SendItem( Client, &gaItems[i] );
 750         }
 751
 752         sendf(Client->Socket, "200 List end\n");
 753 }
 754
 755 tItem *_GetItemFromString(char *String)
 756 {
 757         tHandler        *handler;
 758         char    *type = String;
 759         char    *colon = strchr(String, ':');
 760          int    num, i;
 761
 762         if( !colon ) {
 763                 return NULL;
 764         }
 765
 766         num = atoi(colon+1);
 767         *colon = '\0';
 768
 769         // Find handler
 770         handler = NULL;
 771         for( i = 0; i < giNumHandlers; i ++ )
 772         {
 773                 if( strcmp(gaHandlers[i]->Name, type) == 0) {
 774                         handler = gaHandlers[i];
 775                         break;
 776                 }
 777         }
 778         if( !handler ) {
 779                 return NULL;
 780         }
 781
 782         // Find item
 783         for( i = 0; i < giNumItems; i ++ )
 784         {
 785                 if( gaItems[i].Handler != handler )     continue;
 786                 if( gaItems[i].ID != num )      continue;
 787                 return &gaItems[i];
 788         }
 789         return NULL;
 790 }
 791
 792 /**
 793  * \brief Fetch information on a specific item
 794  */
 795 void Server_Cmd_ITEMINFO(tClient *Client, char *Args)
 796 {
 797         tItem   *item;
 798         char    *itemname;
 799
 800         if( Server_int_ParseArgs(0, Args, &itemname, NULL) ) {
 801                 sendf(Client->Socket, "407 ITEMINFO takes 1 argument\n");
 802                 return ;
 803         }
 804         item = _GetItemFromString(Args);
 805
 806         if( !item ) {
 807                 sendf(Client->Socket, "406 Bad Item ID\n");
 808                 return ;
 809         }
 810
 811         Server_int_SendItem( Client, item );
 812 }
 813
 814 void Server_Cmd_DISPENSE(tClient *Client, char *Args)
 815 {
 816         tItem   *item;
 817          int    ret;
 818          int    uid;
 819         char    *itemname;
 820
 821         if( Server_int_ParseArgs(0, Args, &itemname, NULL) ) {
 822                 sendf(Client->Socket, "407 DISPENSE takes only 1 argument\n");
 823                 return ;
 824         }
 825
 826         if( !Client->bIsAuthed ) {
 827                 sendf(Client->Socket, "401 Not Authenticated\n");
 828                 return ;
 829         }
 830
 831         item = _GetItemFromString(itemname);
 832         if( !item ) {
 833                 sendf(Client->Socket, "406 Bad Item ID\n");
 834                 return ;
 835         }
 836
 837         if( Client->EffectiveUID != -1 ) {
 838                 uid = Client->EffectiveUID;
 839         }
 840         else {
 841                 uid = Client->UID;
 842         }
 843
 844         switch( ret = DispenseItem( Client->UID, uid, item ) )
 845         {
 846         case 0: sendf(Client->Socket, "200 Dispense OK\n");     return ;
 847         case 1: sendf(Client->Socket, "501 Unable to dispense\n");      return ;
 848         case 2: sendf(Client->Socket, "402 Poor You\n");        return ;
 849         default:
 850                 sendf(Client->Socket, "500 Dispense Error (%i)\n", ret);
 851                 return ;
 852         }
 853 }
 854
 855 void Server_Cmd_REFUND(tClient *Client, char *Args)
 856 {
 857         tItem   *item;
 858          int    uid, price_override = 0;
 859         char    *username, *itemname, *price_str;
 860
 861         if( Server_int_ParseArgs(0, Args, &username, &itemname, &price_str, NULL) ) {
 862                 if( !itemname || price_str ) {
 863                         sendf(Client->Socket, "407 REFUND takes 2 or 3 arguments\n");
 864                         return ;
 865                 }
 866         }
 867
 868         if( !Client->bIsAuthed ) {
 869                 sendf(Client->Socket, "401 Not Authenticated\n");
 870                 return ;
 871         }
 872
 873         // Check user permissions
 874         if( !(Bank_GetFlags(Client->UID) & (USER_FLAG_COKE|USER_FLAG_ADMIN))  ) {
 875                 sendf(Client->Socket, "403 Not in coke\n");
 876                 return ;
 877         }
 878
 879         uid = Bank_GetAcctByName(username, 0);
 880         if( uid == -1 ) {
 881                 sendf(Client->Socket, "404 Unknown user\n");
 882                 return ;
 883         }
 884
 885         item = _GetItemFromString(itemname);
 886         if( !item ) {
 887                 sendf(Client->Socket, "406 Bad Item ID\n");
 888                 return ;
 889         }
 890
 891         if( price_str )
 892                 price_override = atoi(price_str);
 893
 894         switch( DispenseRefund( Client->UID, uid, item, price_override ) )
 895         {
 896         case 0: sendf(Client->Socket, "200 Item Refunded\n");   return ;
 897         default:
 898                 sendf(Client->Socket, "500 Dispense Error\n");
 899                 return;
 900         }
 901 }
 902
 903 void Server_Cmd_GIVE(tClient *Client, char *Args)
 904 {
 905         char    *recipient, *ammount, *reason;
 906          int    uid, iAmmount;
 907          int    thisUid;
 908
 909         // Parse arguments
 910         if( Server_int_ParseArgs(1, Args, &recipient, &ammount, &reason, NULL) ) {
 911                 sendf(Client->Socket, "407 GIVE takes only 3 arguments\n");
 912                 return ;
 913         }
 914
 915         // Check for authed
 916         if( !Client->bIsAuthed ) {
 917                 sendf(Client->Socket, "401 Not Authenticated\n");
 918                 return ;
 919         }
 920
 921         // Get recipient
 922         uid = Bank_GetAcctByName(recipient, 0);
 923         if( uid == -1 ) {
 924                 sendf(Client->Socket, "404 Invalid target user\n");
 925                 return ;
 926         }
 927
 928         // You can't alter an internal account
 929 //      if( Bank_GetFlags(uid) & USER_FLAG_INTERNAL ) {
 930 //              sendf(Client->Socket, "404 Invalid target user\n");
 931 //              return ;
 932 //      }
 933
 934         // Parse ammount
 935         iAmmount = atoi(ammount);
 936         if( iAmmount <= 0 ) {
 937                 sendf(Client->Socket, "407 Invalid Argument, ammount must be > zero\n");
 938                 return ;
 939         }
 940
 941         if( Client->EffectiveUID != -1 ) {
 942                 thisUid = Client->EffectiveUID;
 943         }
 944         else {
 945                 thisUid = Client->UID;
 946         }
 947
 948         // Do give
 949         switch( DispenseGive(Client->UID, thisUid, uid, iAmmount, reason) )
 950         {
 951         case 0:
 952                 sendf(Client->Socket, "200 Give OK\n");
 953                 return ;
 954         case 2:
 955                 sendf(Client->Socket, "402 Poor You\n");
 956                 return ;
 957         default:
 958                 sendf(Client->Socket, "500 Unknown error\n");
 959                 return ;
 960         }
 961 }
 962
 963 void Server_Cmd_DONATE(tClient *Client, char *Args)
 964 {
 965         char    *ammount, *reason;
 966          int    iAmmount;
 967          int    thisUid;
 968
 969         // Parse arguments
 970         if( Server_int_ParseArgs(1, Args, &ammount, &reason, NULL) ) {
 971                 sendf(Client->Socket, "407 DONATE takes 2 arguments\n");
 972                 return ;
 973         }
 974
 975         if( !Client->bIsAuthed ) {
 976                 sendf(Client->Socket, "401 Not Authenticated\n");
 977                 return ;
 978         }
 979
 980         // Parse ammount
 981         iAmmount = atoi(ammount);
 982         if( iAmmount <= 0 ) {
 983                 sendf(Client->Socket, "407 Invalid Argument, ammount must be > zero\n");
 984                 return ;
 985         }
 986
 987         // Handle effective users
 988         if( Client->EffectiveUID != -1 ) {
 989                 thisUid = Client->EffectiveUID;
 990         }
 991         else {
 992                 thisUid = Client->UID;
 993         }
 994
 995         // Do give
 996         switch( DispenseDonate(Client->UID, thisUid, iAmmount, reason) )
 997         {
 998         case 0:
 999                 sendf(Client->Socket, "200 Give OK\n");
1000                 return ;
1001         case 2:
1002                 sendf(Client->Socket, "402 Poor You\n");
1003                 return ;
1004         default:
1005                 sendf(Client->Socket, "500 Unknown error\n");
1006                 return ;
1007         }
1008 }
1009
1010 void Server_Cmd_ADD(tClient *Client, char *Args)
1011 {
1012         char    *user, *ammount, *reason;
1013          int    uid, iAmmount;
1014
1015         // Parse arguments
1016         if( Server_int_ParseArgs(1, Args, &user, &ammount, &reason, NULL) ) {
1017                 sendf(Client->Socket, "407 ADD takes 3 arguments\n");
1018                 return ;
1019         }
1020
1021         if( !Client->bIsAuthed ) {
1022                 sendf(Client->Socket, "401 Not Authenticated\n");
1023                 return ;
1024         }
1025
1026         // Check user permissions
1027         if( !(Bank_GetFlags(Client->UID) & (USER_FLAG_COKE|USER_FLAG_ADMIN))  ) {
1028                 sendf(Client->Socket, "403 Not in coke\n");
1029                 return ;
1030         }
1031
1032         #if !ROOT_CAN_ADD
1033         if( strcmp( Client->Username, "root" ) == 0 ) {
1034                 // Allow adding for new users
1035                 if( strcmp(reason, "treasurer: new user") != 0 ) {
1036                         sendf(Client->Socket, "403 Root may not add\n");
1037                         return ;
1038                 }
1039         }
1040         #endif
1041
1042         #if HACK_NO_REFUNDS
1043         if( strstr(reason, "refund") != NULL || strstr(reason, "misdispense") != NULL )
1044         {
1045                 sendf(Client->Socket, "499 Don't use `dispense acct` for refunds, use `dispense refund` (and `dispense -G` to get item IDs)\n");
1046                 return ;
1047         }
1048         #endif
1049
1050         // Get recipient
1051         uid = Bank_GetAcctByName(user, 0);
1052         if( uid == -1 ) {
1053                 sendf(Client->Socket, "404 Invalid user\n");
1054                 return ;
1055         }
1056
1057         // You can't alter an internal account
1058         if( !(Bank_GetFlags(Client->UID) & USER_FLAG_ADMIN) )
1059         {
1060                 if( Bank_GetFlags(uid) & USER_FLAG_INTERNAL ) {
1061                         sendf(Client->Socket, "404 Invalid user\n");
1062                         return ;
1063                 }
1064                 // TODO: Maybe disallow changes to disabled?
1065         }
1066
1067         // Parse ammount
1068         iAmmount = atoi(ammount);
1069         if( iAmmount == 0 && ammount[0] != '0' ) {
1070                 sendf(Client->Socket, "407 Invalid Argument\n");
1071                 return ;
1072         }
1073
1074         // Do give
1075         switch( DispenseAdd(Client->UID, uid, iAmmount, reason) )
1076         {
1077         case 0:
1078                 sendf(Client->Socket, "200 Add OK\n");
1079                 return ;
1080         case 2:
1081                 sendf(Client->Socket, "402 Poor Guy\n");
1082                 return ;
1083         default:
1084                 sendf(Client->Socket, "500 Unknown error\n");
1085                 return ;
1086         }
1087 }
1088
1089 void Server_Cmd_SET(tClient *Client, char *Args)
1090 {
1091         char    *user, *ammount, *reason;
1092          int    uid, iAmmount;
1093
1094         // Parse arguments
1095         if( Server_int_ParseArgs(1, Args, &user, &ammount, &reason, NULL) ) {
1096                 sendf(Client->Socket, "407 SET takes 3 arguments\n");
1097                 return ;
1098         }
1099
1100         if( !Client->bIsAuthed ) {
1101                 sendf(Client->Socket, "401 Not Authenticated\n");
1102                 return ;
1103         }
1104
1105         // Check user permissions
1106         if( !(Bank_GetFlags(Client->UID) & USER_FLAG_ADMIN)  ) {
1107                 sendf(Client->Socket, "403 Not an admin\n");
1108                 return ;
1109         }
1110
1111         // Get recipient
1112         uid = Bank_GetAcctByName(user, 0);
1113         if( uid == -1 ) {
1114                 sendf(Client->Socket, "404 Invalid user\n");
1115                 return ;
1116         }
1117
1118         // Parse ammount
1119         iAmmount = atoi(ammount);
1120         if( iAmmount == 0 && ammount[0] != '0' ) {
1121                 sendf(Client->Socket, "407 Invalid Argument\n");
1122                 return ;
1123         }
1124
1125         // Do give
1126         switch( DispenseSet(Client->UID, uid, iAmmount, reason) )
1127         {
1128         case 0:
1129                 sendf(Client->Socket, "200 Add OK\n");
1130                 return ;
1131         case 2:
1132                 sendf(Client->Socket, "402 Poor Guy\n");
1133                 return ;
1134         default:
1135                 sendf(Client->Socket, "500 Unknown error\n");
1136                 return ;
1137         }
1138 }
1139
1140 void Server_Cmd_ENUMUSERS(tClient *Client, char *Args)
1141 {
1142          int    i, numRet = 0;
1143         tAcctIterator   *it;
1144          int    maxBal = INT_MAX, minBal = INT_MIN;
1145          int    flagMask = 0, flagVal = 0;
1146          int    sort = BANK_ITFLAG_SORT_NAME;
1147         time_t  lastSeenAfter=0, lastSeenBefore=0;
1148
1149          int    flags;  // Iterator flags
1150          int    balValue;       // Balance value for iterator
1151         time_t  timeValue;      // Time value for iterator
1152
1153         // Parse arguments
1154         if( Args && strlen(Args) )
1155         {
1156                 char    *space = Args, *type, *val;
1157                 do
1158                 {
1159                         type = space;
1160                         while(*type == ' ')     type ++;
1161                         // Get next space
1162                         space = strchr(space, ' ');
1163                         if(space)       *space = '\0';
1164
1165                         // Get type
1166                         val = strchr(type, ':');
1167                         if( val ) {
1168                                 *val = '\0';
1169                                 val ++;
1170
1171                                 // Types
1172                                 // - Minium Balance
1173                                 if( strcmp(type, "min_balance") == 0 ) {
1174                                         minBal = atoi(val);
1175                                 }
1176                                 // - Maximum Balance
1177                                 else if( strcmp(type, "max_balance") == 0 ) {
1178                                         maxBal = atoi(val);
1179                                 }
1180                                 // - Flags
1181                                 else if( strcmp(type, "flags") == 0 ) {
1182                                         if( Server_int_ParseFlags(Client, val, &flagMask, &flagVal) )
1183                                                 return ;
1184                                 }
1185                                 // - Last seen before timestamp
1186                                 else if( strcmp(type, "last_seen_before") == 0 ) {
1187                                         lastSeenAfter = atoll(val);
1188                                 }
1189                                 // - Last seen after timestamp
1190                                 else if( strcmp(type, "last_seen_after") == 0 ) {
1191                                         lastSeenAfter = atoll(val);
1192                                 }
1193                                 // - Sorting
1194                                 else if( strcmp(type, "sort") == 0 ) {
1195                                         char    *dash = strchr(val, '-');
1196                                         if( dash ) {
1197                                                 *dash = '\0';
1198                                                 dash ++;
1199                                         }
1200                                         if( strcmp(val, "name") == 0 ) {
1201                                                 sort = BANK_ITFLAG_SORT_NAME;
1202                                         }
1203                                         else if( strcmp(val, "balance") == 0 ) {
1204                                                 sort = BANK_ITFLAG_SORT_BAL;
1205                                         }
1206                                         else if( strcmp(val, "lastseen") == 0 ) {
1207                                                 sort = BANK_ITFLAG_SORT_LASTSEEN;
1208                                         }
1209                                         else {
1210                                                 sendf(Client->Socket, "407 Unknown sort field ('%s')\n", val);
1211                                                 return ;
1212                                         }
1213                                         // Handle sort direction
1214                                         if( dash ) {
1215                                                 if( strcmp(dash, "desc") == 0 ) {
1216                                                         sort |= BANK_ITFLAG_REVSORT;
1217                                                 }
1218                                                 else {
1219                                                         sendf(Client->Socket, "407 Unknown sort direction '%s'\n", dash);
1220                                                         return ;
1221                                                 }
1222                                                 dash[-1] = '-';
1223                                         }
1224                                 }
1225                                 else {
1226                                         sendf(Client->Socket, "407 Unknown argument to ENUM_USERS '%s:%s'\n", type, val);
1227                                         return ;
1228                                 }
1229
1230                                 val[-1] = ':';
1231                         }
1232                         else {
1233                                 sendf(Client->Socket, "407 Unknown argument to ENUM_USERS '%s'\n", type);
1234                                 return ;
1235                         }
1236
1237                         // Eat whitespace
1238                         if( space ) {
1239                                 *space = ' ';   // Repair (to be nice)
1240                                 space ++;
1241                                 while(*space == ' ')    space ++;
1242                         }
1243                 }       while(space);
1244         }
1245
1246         // Create iterator
1247         if( maxBal != INT_MAX ) {
1248                 flags = sort|BANK_ITFLAG_MAXBALANCE;
1249                 balValue = maxBal;
1250         }
1251         else if( minBal != INT_MIN ) {
1252                 flags = sort|BANK_ITFLAG_MINBALANCE;
1253                 balValue = minBal;
1254         }
1255         else {
1256                 flags = sort;
1257                 balValue = 0;
1258         }
1259         if( lastSeenBefore ) {
1260                 timeValue = lastSeenBefore;
1261                 flags |= BANK_ITFLAG_SEENBEFORE;
1262         }
1263         else if( lastSeenAfter ) {
1264                 timeValue = lastSeenAfter;
1265                 flags |= BANK_ITFLAG_SEENAFTER;
1266         }
1267         else {
1268                 timeValue = 0;
1269         }
1270         it = Bank_Iterator(flagMask, flagVal, flags, balValue, timeValue);
1271
1272         // Get return number
1273         while( (i = Bank_IteratorNext(it)) != -1 )
1274         {
1275                 int bal = Bank_GetBalance(i);
1276
1277                 if( bal == INT_MIN )    continue;
1278
1279                 if( bal < minBal )      continue;
1280                 if( bal > maxBal )      continue;
1281
1282                 numRet ++;
1283         }
1284
1285         Bank_DelIterator(it);
1286
1287         // Send count
1288         sendf(Client->Socket, "201 Users %i\n", numRet);
1289
1290
1291         // Create iterator
1292         it = Bank_Iterator(flagMask, flagVal, flags, balValue, timeValue);
1293
1294         while( (i = Bank_IteratorNext(it)) != -1 )
1295         {
1296                 int bal = Bank_GetBalance(i);
1297
1298                 if( bal == INT_MIN )    continue;
1299
1300                 if( bal < minBal )      continue;
1301                 if( bal > maxBal )      continue;
1302
1303                 _SendUserInfo(Client, i);
1304         }
1305
1306         Bank_DelIterator(it);
1307
1308         sendf(Client->Socket, "200 List End\n");
1309 }
1310
1311 void Server_Cmd_USERINFO(tClient *Client, char *Args)
1312 {
1313          int    uid;
1314         char    *user;
1315
1316         // Parse arguments
1317         if( Server_int_ParseArgs(0, Args, &user, NULL) ) {
1318                 sendf(Client->Socket, "407 USER_INFO takes 1 argument\n");
1319                 return ;
1320         }
1321
1322         if( giDebugLevel )      Debug(Client, "User Info '%s'", user);
1323
1324         // Get recipient
1325         uid = Bank_GetAcctByName(user, 0);
1326
1327         if( giDebugLevel >= 2 ) Debug(Client, "uid = %i", uid);
1328         if( uid == -1 ) {
1329                 sendf(Client->Socket, "404 Invalid user\n");
1330                 return ;
1331         }
1332
1333         _SendUserInfo(Client, uid);
1334 }
1335
1336 void _SendUserInfo(tClient *Client, int UserID)
1337 {
1338         char    *type, *disabled="", *door="";
1339          int    flags = Bank_GetFlags(UserID);
1340
1341         if( flags & USER_FLAG_INTERNAL ) {
1342                 type = "internal";
1343         }
1344         else if( flags & USER_FLAG_COKE ) {
1345                 if( flags & USER_FLAG_ADMIN )
1346                         type = "coke,admin";
1347                 else
1348                         type = "coke";
1349         }
1350         else if( flags & USER_FLAG_ADMIN ) {
1351                 type = "admin";
1352         }
1353         else {
1354                 type = "user";
1355         }
1356
1357         if( flags & USER_FLAG_DISABLED )
1358                 disabled = ",disabled";
1359         if( flags & USER_FLAG_DOORGROUP )
1360                 door = ",door";
1361
1362         // TODO: User flags/type
1363         sendf(
1364                 Client->Socket, "202 User %s %i %s%s%s\n",
1365                 Bank_GetAcctName(UserID), Bank_GetBalance(UserID),
1366                 type, disabled, door
1367                 );
1368 }
1369
1370 void Server_Cmd_USERADD(tClient *Client, char *Args)
1371 {
1372         char    *username;
1373
1374         // Parse arguments
1375         if( Server_int_ParseArgs(0, Args, &username, NULL) ) {
1376                 sendf(Client->Socket, "407 USER_ADD takes 1 argument\n");
1377                 return ;
1378         }
1379
1380         // Check authentication
1381         if( !Client->bIsAuthed ) {
1382                 sendf(Client->Socket, "401 Not Authenticated\n");
1383                 return ;
1384         }
1385
1386         // Check permissions
1387         if( !(Bank_GetFlags(Client->UID) & USER_FLAG_ADMIN) ) {
1388                 sendf(Client->Socket, "403 Not a coke admin\n");
1389                 return ;
1390         }
1391
1392         // Try to create user
1393         if( Bank_CreateAcct(username) == -1 ) {
1394                 sendf(Client->Socket, "404 User exists\n");
1395                 return ;
1396         }
1397
1398         {
1399                 char    *thisName = Bank_GetAcctName(Client->UID);
1400                 Log_Info("Account '%s' created by '%s'", username, thisName);
1401                 free(thisName);
1402         }
1403
1404         sendf(Client->Socket, "200 User Added\n");
1405 }
1406
1407 void Server_Cmd_USERFLAGS(tClient *Client, char *Args)
1408 {
1409         char    *username, *flags, *reason=NULL;
1410          int    mask=0, value=0;
1411          int    uid;
1412
1413         // Parse arguments
1414         if( Server_int_ParseArgs(1, Args, &username, &flags, &reason, NULL) ) {
1415                 if( !flags ) {
1416                         sendf(Client->Socket, "407 USER_FLAGS takes at least 2 arguments\n");
1417                         return ;
1418                 }
1419                 reason = "";
1420         }
1421
1422         // Check authentication
1423         if( !Client->bIsAuthed ) {
1424                 sendf(Client->Socket, "401 Not Authenticated\n");
1425                 return ;
1426         }
1427
1428         // Check permissions
1429         if( !(Bank_GetFlags(Client->UID) & USER_FLAG_ADMIN) ) {
1430                 sendf(Client->Socket, "403 Not a coke admin\n");
1431                 return ;
1432         }
1433
1434         // Get UID
1435         uid = Bank_GetAcctByName(username, 0);
1436         if( uid == -1 ) {
1437                 sendf(Client->Socket, "404 User '%s' not found\n", username);
1438                 return ;
1439         }
1440
1441         // Parse flags
1442         if( Server_int_ParseFlags(Client, flags, &mask, &value) )
1443                 return ;
1444
1445         if( giDebugLevel )
1446                 Debug(Client, "Set %i(%s) flags to %x (masked %x)\n",
1447                         uid, username, mask, value);
1448
1449         // Apply flags
1450         Bank_SetFlags(uid, mask, value);
1451
1452         // Log the change
1453         Log_Info("Updated '%s' with flag set '%s' by '%s' - Reason: %s",
1454                 username, flags, Client->Username, reason);
1455
1456         // Return OK
1457         sendf(Client->Socket, "200 User Updated\n");
1458 }
1459
1460 void Server_Cmd_UPDATEITEM(tClient *Client, char *Args)
1461 {
1462         char    *itemname, *price_str, *description;
1463          int    price;
1464         tItem   *item;
1465
1466         if( Server_int_ParseArgs(1, Args, &itemname, &price_str, &description, NULL) ) {
1467                 sendf(Client->Socket, "407 UPDATE_ITEM takes 3 arguments\n");
1468                 return ;
1469         }
1470
1471         if( !Client->bIsAuthed ) {
1472                 sendf(Client->Socket, "401 Not Authenticated\n");
1473                 return ;
1474         }
1475
1476         // Check user permissions
1477         if( !(Bank_GetFlags(Client->UID) & (USER_FLAG_COKE|USER_FLAG_ADMIN))  ) {
1478                 sendf(Client->Socket, "403 Not in coke\n");
1479                 return ;
1480         }
1481
1482         item = _GetItemFromString(itemname);
1483         if( !item ) {
1484                 // TODO: Create item?
1485                 sendf(Client->Socket, "406 Bad Item ID\n");
1486                 return ;
1487         }
1488
1489         price = atoi(price_str);
1490         if( price <= 0 && price_str[0] != '0' ) {
1491                 sendf(Client->Socket, "407 Invalid price set\n");
1492         }
1493
1494         switch( DispenseUpdateItem( Client->UID, item, description, price ) )
1495         {
1496         case 0:
1497                 // Return OK
1498                 sendf(Client->Socket, "200 Item updated\n");
1499                 break;
1500         default:
1501                 break;
1502         }
1503 }
1504
1505 // --- INTERNAL HELPERS ---
1506 void Debug(tClient *Client, const char *Format, ...)
1507 {
1508         va_list args;
1509         //printf("%010i [%i] ", (int)time(NULL), Client->ID);
1510         printf("[%i] ", Client->ID);
1511         va_start(args, Format);
1512         vprintf(Format, args);
1513         va_end(args);
1514         printf("\n");
1515 }
1516
1517 int sendf(int Socket, const char *Format, ...)
1518 {
1519         va_list args;
1520          int    len;
1521
1522         va_start(args, Format);
1523         len = vsnprintf(NULL, 0, Format, args);
1524         va_end(args);
1525
1526         {
1527                 char    buf[len+1];
1528                 va_start(args, Format);
1529                 vsnprintf(buf, len+1, Format, args);
1530                 va_end(args);
1531
1532                 #if DEBUG_TRACE_CLIENT
1533                 printf("sendf: %s", buf);
1534                 #endif
1535
1536                 return send(Socket, buf, len, 0);
1537         }
1538 }
1539
1540 // Takes a series of char *'s in
1541 /**
1542  * \brief Parse space-separated entries into
1543  */
1544 int Server_int_ParseArgs(int bUseLongLast, char *ArgStr, ...)
1545 {
1546         va_list args;
1547         char    savedChar;
1548         char    **dest;
1549         va_start(args, ArgStr);
1550
1551         // Check for null
1552         if( !ArgStr )
1553         {
1554                 while( (dest = va_arg(args, char **)) )
1555                         *dest = NULL;
1556                 va_end(args);
1557                 return 1;
1558         }
1559
1560         savedChar = *ArgStr;
1561
1562         while( (dest = va_arg(args, char **)) )
1563         {
1564                 // Trim leading spaces
1565                 while( *ArgStr == ' ' || *ArgStr == '\t' )
1566                         ArgStr ++;
1567
1568                 // ... oops, not enough arguments
1569                 if( *ArgStr == '\0' )
1570                 {
1571                         // NULL unset arguments
1572                         do {
1573                                 *dest = NULL;
1574                         }       while( (dest = va_arg(args, char **)) );
1575                 va_end(args);
1576                         return -1;
1577                 }
1578
1579                 if( *ArgStr == '"' )
1580                 {
1581                         ArgStr ++;
1582                         *dest = ArgStr;
1583                         // Read until quote
1584                         while( *ArgStr && *ArgStr != '"' )
1585                                 ArgStr ++;
1586                 }
1587                 else
1588                 {
1589                         // Set destination
1590                         *dest = ArgStr;
1591                         // Read until a space
1592                         while( *ArgStr && *ArgStr != ' ' && *ArgStr != '\t' )
1593                                 ArgStr ++;
1594                 }
1595                 savedChar = *ArgStr;    // savedChar is used to un-mangle the last string
1596                 *ArgStr = '\0';
1597                 ArgStr ++;
1598         }
1599         va_end(args);
1600
1601         // Oops, extra arguments, and greedy not set
1602         if( (savedChar == ' ' || savedChar == '\t') && !bUseLongLast ) {
1603                 return -1;
1604         }
1605
1606         // Un-mangle last
1607         if(bUseLongLast) {
1608                 ArgStr --;
1609                 *ArgStr = savedChar;
1610         }
1611
1612         return 0;       // Success!
1613 }
1614
1615 int Server_int_ParseFlags(tClient *Client, const char *Str, int *Mask, int *Value)
1616 {
1617         struct {
1618                 const char      *Name;
1619                  int    Mask;
1620                  int    Value;
1621         }       cFLAGS[] = {
1622                  {"disabled", USER_FLAG_DISABLED, USER_FLAG_DISABLED}
1623                 ,{"door", USER_FLAG_DOORGROUP, USER_FLAG_DOORGROUP}
1624                 ,{"coke", USER_FLAG_COKE, USER_FLAG_COKE}
1625                 ,{"admin", USER_FLAG_ADMIN, USER_FLAG_ADMIN}
1626                 ,{"internal", USER_FLAG_INTERNAL, USER_FLAG_INTERNAL}
1627         };
1628         const int       ciNumFlags = sizeof(cFLAGS)/sizeof(cFLAGS[0]);
1629
1630         char    *space;
1631
1632         *Mask = 0;
1633         *Value = 0;
1634
1635         do {
1636                  int    bRemove = 0;
1637                  int    i;
1638                  int    len;
1639
1640                 while( *Str == ' ' )    Str ++; // Eat whitespace
1641                 space = strchr(Str, ',');       // Find the end of the flag
1642                 if(space)
1643                         len = space - Str;
1644                 else
1645                         len = strlen(Str);
1646
1647                 // Check for inversion/removal
1648                 if( *Str == '!' || *Str == '-' ) {
1649                         bRemove = 1;
1650                         Str ++;
1651                 }
1652                 else if( *Str == '+' ) {
1653                         Str ++;
1654                 }
1655
1656                 // Check flag values
1657                 for( i = 0; i < ciNumFlags; i ++ )
1658                 {
1659                         if( strncmp(Str, cFLAGS[i].Name, len) == 0 ) {
1660                                 *Mask |= cFLAGS[i].Mask;
1661                                 *Value &= ~cFLAGS[i].Mask;
1662                                 if( !bRemove )
1663                                         *Value |= cFLAGS[i].Value;
1664                                 break;
1665                         }
1666                 }
1667
1668                 // Error check
1669                 if( i == ciNumFlags ) {
1670                         char    val[len+1];
1671                         strncpy(val, Str, len+1);
1672                         sendf(Client->Socket, "407 Unknown flag value '%s'\n", val);
1673                         return -1;
1674                 }
1675
1676                 Str = space + 1;
1677         } while(space);
1678
1679         return 0;
1680 }