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    bTrustedHost;
  48          int    bCanAutoAuth;   // Is the connection from a trusted host/port
  49
  50         char    *Username;
  51         char    Salt[9];
  52
  53          int    UID;
  54          int    EffectiveUID;
  55          int    bIsAuthed;
  56 }       tClient;
  57
  58 // === PROTOTYPES ===
  59 void    Server_Start(void);
  60 void    Server_Cleanup(void);
  61 void    Server_HandleClient(int Socket, int bTrustedHost, int bRootPort);
  62 void    Server_ParseClientCommand(tClient *Client, char *CommandString);
  63 // --- Commands ---
  64 void    Server_Cmd_USER(tClient *Client, char *Args);
  65 void    Server_Cmd_PASS(tClient *Client, char *Args);
  66 void    Server_Cmd_AUTOAUTH(tClient *Client, char *Args);
  67 void    Server_Cmd_AUTHIDENT(tClient *Client, char *Args);
  68 void    Server_Cmd_SETEUSER(tClient *Client, char *Args);
  69 void    Server_Cmd_ENUMITEMS(tClient *Client, char *Args);
  70 void    Server_Cmd_ITEMINFO(tClient *Client, char *Args);
  71 void    Server_Cmd_DISPENSE(tClient *Client, char *Args);
  72 void    Server_Cmd_REFUND(tClient *Client, char *Args);
  73 void    Server_Cmd_GIVE(tClient *Client, char *Args);
  74 void    Server_Cmd_DONATE(tClient *Client, char *Args);
  75 void    Server_Cmd_ADD(tClient *Client, char *Args);
  76 void    Server_Cmd_SET(tClient *Client, char *Args);
  77 void    Server_Cmd_ENUMUSERS(tClient *Client, char *Args);
  78 void    Server_Cmd_USERINFO(tClient *Client, char *Args);
  79 void    _SendUserInfo(tClient *Client, int UserID);
  80 void    Server_Cmd_USERADD(tClient *Client, char *Args);
  81 void    Server_Cmd_USERFLAGS(tClient *Client, char *Args);
  82 void    Server_Cmd_UPDATEITEM(tClient *Client, char *Args);
  83 // --- Helpers ---
  84 void    Debug(tClient *Client, const char *Format, ...);
  85  int    sendf(int Socket, const char *Format, ...);
  86  int    Server_int_ParseArgs(int bUseLongArg, char *ArgStr, ...);
  87  int    Server_int_ParseFlags(tClient *Client, const char *Str, int *Mask, int *Value);
  88
  89 // === CONSTANTS ===
  90 // - Commands
  91 const struct sClientCommand {
  92         const char      *Name;
  93         void    (*Function)(tClient *Client, char *Arguments);
  94 }       gaServer_Commands[] = {
  95         {"USER", Server_Cmd_USER},
  96         {"PASS", Server_Cmd_PASS},
  97         {"AUTOAUTH", Server_Cmd_AUTOAUTH},
  98         {"AUTHIDENT", Server_Cmd_AUTHIDENT},
  99         {"SETEUSER", Server_Cmd_SETEUSER},
 100         {"ENUM_ITEMS", Server_Cmd_ENUMITEMS},
 101         {"ITEM_INFO", Server_Cmd_ITEMINFO},
 102         {"DISPENSE", Server_Cmd_DISPENSE},
 103         {"REFUND", Server_Cmd_REFUND},
 104         {"GIVE", Server_Cmd_GIVE},
 105         {"DONATE", Server_Cmd_DONATE},
 106         {"ADD", Server_Cmd_ADD},
 107         {"SET", Server_Cmd_SET},
 108         {"ENUM_USERS", Server_Cmd_ENUMUSERS},
 109         {"USER_INFO", Server_Cmd_USERINFO},
 110         {"USER_ADD", Server_Cmd_USERADD},
 111         {"USER_FLAGS", Server_Cmd_USERFLAGS},
 112         {"UPDATE_ITEM", Server_Cmd_UPDATEITEM}
 113 };
 114 #define NUM_COMMANDS    ((int)(sizeof(gaServer_Commands)/sizeof(gaServer_Commands[0])))
 115
 116 // === GLOBALS ===
 117 // - Configuration
 118  int    giServer_Port = 11020;
 119  int    gbServer_RunInBackground = 0;
 120 char    *gsServer_LogFile = "/var/log/dispsrv.log";
 121 char    *gsServer_ErrorLog = "/var/log/dispsrv.err";
 122  int    giServer_NumTrustedHosts;
 123 struct in_addr  *gaServer_TrustedHosts;
 124 // - State variables
 125  int    giServer_Socket;        // Server socket
 126  int    giServer_NextClientID = 1;      // Debug client ID
 127
 128
 129 // === CODE ===
 130 /**
 131  * \brief Open listenting socket and serve connections
 132  */
 133 void Server_Start(void)
 134 {
 135          int    client_socket;
 136         struct sockaddr_in      server_addr, client_addr;
 137
 138         // Parse trusted hosts list
 139         giServer_NumTrustedHosts = Config_GetValueCount("trusted_host");
 140         gaServer_TrustedHosts = malloc(giServer_NumTrustedHosts * sizeof(*gaServer_TrustedHosts));
 141         for( int i = 0; i < giServer_NumTrustedHosts; i ++ )
 142         {
 143                 const char      *addr = Config_GetValue("trusted_host", i);
 144
 145                 if( inet_aton(addr, &gaServer_TrustedHosts[i]) == 0 ) {
 146                         fprintf(stderr, "Invalid IP address '%s'\n", addr);
 147                         continue ;
 148                 }
 149         }
 150
 151         atexit(Server_Cleanup);
 152         // Ignore SIGPIPE (stops crashes when the client exits early)
 153         signal(SIGPIPE, SIG_IGN);
 154
 155         // Create Server
 156         giServer_Socket = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);
 157         if( giServer_Socket < 0 ) {
 158                 fprintf(stderr, "ERROR: Unable to create server socket\n");
 159                 return ;
 160         }
 161
 162         // Make listen address
 163         memset(&server_addr, 0, sizeof(server_addr));
 164         server_addr.sin_family = AF_INET;       // Internet Socket
 165         server_addr.sin_addr.s_addr = htonl(INADDR_ANY);        // Listen on all interfaces
 166         server_addr.sin_port = htons(giServer_Port);    // Port
 167
 168         // Bind
 169         if( bind(giServer_Socket, (struct sockaddr *) &server_addr, sizeof(server_addr)) < 0 ) {
 170                 fprintf(stderr, "ERROR: Unable to bind to 0.0.0.0:%i\n", giServer_Port);
 171                 perror("Binding");
 172                 return ;
 173         }
 174
 175         // Fork into background
 176         if( gbServer_RunInBackground )
 177         {
 178                 int pid = fork();
 179                 if( pid == -1 ) {
 180                         fprintf(stderr, "ERROR: Unable to fork\n");
 181                         perror("fork background");
 182                         exit(-1);
 183                 }
 184                 if( pid != 0 ) {
 185                         // Parent, quit
 186                         printf("Forked child %i\n", pid);
 187                         exit(0);
 188                 }
 189                 // In child
 190                 // - Sort out stdin/stdout
 191                 #if 0
 192                 dup2( open("/dev/null", O_RDONLY, 0644), STDIN_FILENO );
 193                 dup2( open(gsServer_LogFile, O_CREAT|O_APPEND, 0644), STDOUT_FILENO );
 194                 dup2( open(gsServer_ErrorLog, O_CREAT|O_APPEND, 0644), STDERR_FILENO );
 195                 #else
 196                 freopen("/dev/null", "r", stdin);
 197                 freopen(gsServer_LogFile, "a", stdout);
 198                 freopen(gsServer_ErrorLog, "a", stderr);
 199                 fprintf(stdout, "OpenDispense 2 Server Started at %lld\n", (long long)time(NULL));
 200                 fprintf(stderr, "OpenDispense 2 Server Started at %lld\n", (long long)time(NULL));
 201                 #endif
 202         }
 203
 204         // Start the helper thread
 205         StartPeriodicThread();
 206
 207         // Listen
 208         if( listen(giServer_Socket, MAX_CONNECTION_QUEUE) < 0 ) {
 209                 fprintf(stderr, "ERROR: Unable to listen to socket\n");
 210                 perror("Listen");
 211                 return ;
 212         }
 213
 214         printf("Listening on 0.0.0.0:%i\n", giServer_Port);
 215
 216         // write pidfile
 217         {
 218                 FILE *fp = fopen("/var/run/dispsrv.pid", "w");
 219                 if( fp ) {
 220                         fprintf(fp, "%i", getpid());
 221                         fclose(fp);
 222                 }
 223         }
 224
 225         for(;;)
 226         {
 227                 uint    len = sizeof(client_addr);
 228                  int    bTrusted = 0;
 229                  int    bRootPort = 0;
 230
 231                 // Accept a connection
 232                 client_socket = accept(giServer_Socket, (struct sockaddr *) &client_addr, &len);
 233                 if(client_socket < 0) {
 234                         fprintf(stderr, "ERROR: Unable to accept client connection\n");
 235                         return ;
 236                 }
 237
 238                 // Set a timeout on the user conneciton
 239                 {
 240                         struct timeval tv;
 241                         tv.tv_sec = CLIENT_TIMEOUT;
 242                         tv.tv_usec = 0;
 243                         if( setsockopt(client_socket, SOL_SOCKET, SO_RCVTIMEO, &tv, sizeof(tv)) )
 244                         {
 245                                 perror("setsockopt");
 246                                 return ;
 247                         }
 248                 }
 249
 250                 // Debug: Print the connection string
 251                 if(giDebugLevel >= 2) {
 252                         char    ipstr[INET_ADDRSTRLEN];
 253                         inet_ntop(AF_INET, &client_addr.sin_addr, ipstr, INET_ADDRSTRLEN);
 254                         printf("Client connection from %s:%i\n",
 255                                 ipstr, ntohs(client_addr.sin_port));
 256                 }
 257
 258                 // Doesn't matter what, localhost is trusted
 259                 if( ntohl( client_addr.sin_addr.s_addr ) == 0x7F000001 )
 260                         bTrusted = 1;
 261
 262                 // Check if the host is on the trusted list
 263                 for( int i = 0; i < giServer_NumTrustedHosts; i ++ )
 264                 {
 265                         if( memcmp(&client_addr.sin_addr, &gaServer_TrustedHosts[i], sizeof(struct in_addr)) == 0 )
 266                         {
 267                                 bTrusted = 1;
 268                                 break;
 269                         }
 270                 }
 271
 272                 // Root port (can AUTOAUTH if also a trusted machine
 273                 if( ntohs(client_addr.sin_port) < 1024 )
 274                         bRootPort = 1;
 275
 276                 #if 0
 277                 {
 278                         // TODO: Make this runtime configurable
 279                         switch( ntohl( client_addr.sin_addr.s_addr ) )
 280                         {
 281                         case 0x7F000001:        // 127.0.0.1    localhost
 282                 //      case 0x825F0D00:        // 130.95.13.0
 283                         case 0x825F0D04:        // 130.95.13.4  merlo
 284                 //      case 0x825F0D05:        // 130.95.13.5  heathred (MR)
 285                         case 0x825F0D07:        // 130.95.13.7  motsugo
 286                         case 0x825F0D11:        // 130.95.13.17 mermaid
 287                         case 0x825F0D12:        // 130.95.13.18 mussel
 288                         case 0x825F0D17:        // 130.95.13.23 martello
 289                         case 0x825F0D2A:        // 130.95.13.42 meersau
 290                 //      case 0x825F0D42:        // 130.95.13.66 heathred (Clubroom)
 291                                 bTrusted = 1;
 292                                 break;
 293                         default:
 294                                 break;
 295                         }
 296                 }
 297                 #endif
 298
 299                 // TODO: Multithread this?
 300                 Server_HandleClient(client_socket, bTrusted, bRootPort);
 301
 302                 close(client_socket);
 303         }
 304 }
 305
 306 void Server_Cleanup(void)
 307 {
 308         printf("\nClose(%i)\n", giServer_Socket);
 309         close(giServer_Socket);
 310         unlink("/var/run/dispsrv.pid");
 311 }
 312
 313 /**
 314  * \brief Reads from a client socket and parses the command strings
 315  * \param Socket        Client socket number/handle
 316  * \param bTrusted      Is the client trusted?
 317  */
 318 void Server_HandleClient(int Socket, int bTrusted, int bRootPort)
 319 {
 320         char    inbuf[INPUT_BUFFER_SIZE];
 321         char    *buf = inbuf;
 322          int    remspace = INPUT_BUFFER_SIZE-1;
 323          int    bytes = -1;
 324         tClient clientInfo;
 325
 326         memset(&clientInfo, 0, sizeof(clientInfo));
 327
 328         // Initialise Client info
 329         clientInfo.Socket = Socket;
 330         clientInfo.ID = giServer_NextClientID ++;
 331         clientInfo.bTrustedHost = bTrusted;
 332         clientInfo.bCanAutoAuth = bTrusted && bRootPort;
 333         clientInfo.EffectiveUID = -1;
 334
 335         // Read from client
 336         /*
 337          * Notes:
 338          * - The `buf` and `remspace` variables allow a line to span several
 339          *   calls to recv(), if a line is not completed in one recv() call
 340          *   it is saved to the beginning of `inbuf` and `buf` is updated to
 341          *   the end of it.
 342          */
 343         // TODO: Use select() instead (to give a timeout)
 344         while( (bytes = recv(Socket, buf, remspace, 0)) > 0 )
 345         {
 346                 char    *eol, *start;
 347                 buf[bytes] = '\0';      // Allow us to use stdlib string functions on it
 348
 349                 // Split by lines
 350                 start = inbuf;
 351                 while( (eol = strchr(start, '\n')) )
 352                 {
 353                         *eol = '\0';
 354
 355                         Server_ParseClientCommand(&clientInfo, start);
 356
 357                         start = eol + 1;
 358                 }
 359
 360                 // Check if there was an incomplete line
 361                 if( *start != '\0' ) {
 362                          int    tailBytes = bytes - (start-buf);
 363                         // Roll back in buffer
 364                         memcpy(inbuf, start, tailBytes);
 365                         remspace -= tailBytes;
 366                         if(remspace == 0) {
 367                                 send(Socket, MSG_STR_TOO_LONG, sizeof(MSG_STR_TOO_LONG), 0);
 368                                 buf = inbuf;
 369                                 remspace = INPUT_BUFFER_SIZE - 1;
 370                         }
 371                 }
 372                 else {
 373                         buf = inbuf;
 374                         remspace = INPUT_BUFFER_SIZE - 1;
 375                 }
 376         }
 377
 378         // Check for errors
 379         if( bytes < 0 ) {
 380                 fprintf(stderr, "ERROR: Unable to recieve from client on socket %i\n", Socket);
 381                 return ;
 382         }
 383
 384         if(giDebugLevel >= 2) {
 385                 printf("Client %i: Disconnected\n", clientInfo.ID);
 386         }
 387 }
 388
 389 /**
 390  * \brief Parses a client command and calls the required helper function
 391  * \param Client        Pointer to client state structure
 392  * \param CommandString Command from client (single line of the command)
 393  * \return Heap String to return to the client
 394  */
 395 void Server_ParseClientCommand(tClient *Client, char *CommandString)
 396 {
 397         char    *command, *args;
 398          int    i;
 399
 400         if( giDebugLevel >= 2 )
 401                 Debug(Client, "Server_ParseClientCommand: (CommandString = '%s')", CommandString);
 402
 403         if( Server_int_ParseArgs(1, CommandString, &command, &args, NULL) )
 404         {
 405                 if( command == NULL )   return ;
 406                 // Is this an error? (just ignore for now)
 407         }
 408
 409
 410         // Find command
 411         for( i = 0; i < NUM_COMMANDS; i++ )
 412         {
 413                 if(strcmp(command, gaServer_Commands[i].Name) == 0) {
 414                         if( giDebugLevel >= 2 )
 415                                 Debug(Client, "CMD %s - \"%s\"", command, args);
 416                         gaServer_Commands[i].Function(Client, args);
 417                         return ;
 418                 }
 419         }
 420
 421         sendf(Client->Socket, "400 Unknown Command\n");
 422 }
 423
 424 // ---
 425 // Commands
 426 // ---
 427 /**
 428  * \brief Set client username
 429  *
 430  * Usage: USER <username>
 431  */
 432 void Server_Cmd_USER(tClient *Client, char *Args)
 433 {
 434         char    *username;
 435
 436         if( Server_int_ParseArgs(0, Args, &username, NULL) )
 437         {
 438                 sendf(Client->Socket, "407 USER takes 1 argument\n");
 439                 return ;
 440         }
 441
 442         // Debug!
 443         if( giDebugLevel )
 444                 Debug(Client, "Authenticating as '%s'", username);
 445
 446         // Save username
 447         if(Client->Username)
 448                 free(Client->Username);
 449         Client->Username = strdup(username);
 450
 451         #if USE_SALT
 452         // Create a salt (that changes if the username is changed)
 453         // Yes, I know, I'm a little paranoid, but who isn't?
 454         Client->Salt[0] = 0x21 + (rand()&0x3F);
 455         Client->Salt[1] = 0x21 + (rand()&0x3F);
 456         Client->Salt[2] = 0x21 + (rand()&0x3F);
 457         Client->Salt[3] = 0x21 + (rand()&0x3F);
 458         Client->Salt[4] = 0x21 + (rand()&0x3F);
 459         Client->Salt[5] = 0x21 + (rand()&0x3F);
 460         Client->Salt[6] = 0x21 + (rand()&0x3F);
 461         Client->Salt[7] = 0x21 + (rand()&0x3F);
 462
 463         // TODO: Also send hash type to use, (SHA1 or crypt according to [DAA])
 464         sendf(Client->Socket, "100 SALT %s\n", Client->Salt);
 465         #else
 466         sendf(Client->Socket, "100 User Set\n");
 467         #endif
 468 }
 469
 470 /**
 471  * \brief Authenticate as a user
 472  *
 473  * Usage: PASS <hash>
 474  */
 475 void Server_Cmd_PASS(tClient *Client, char *Args)
 476 {
 477         char    *passhash;
 478          int    flags;
 479
 480         if( Server_int_ParseArgs(0, Args, &passhash, NULL) )
 481         {
 482                 sendf(Client->Socket, "407 PASS takes 1 argument\n");
 483                 return ;
 484         }
 485
 486         // Pass on to cokebank
 487         Client->UID = Bank_GetUserAuth(Client->Salt, Client->Username, passhash);
 488
 489         if( Client->UID == -1 ) {
 490                 sendf(Client->Socket, "401 Auth Failure\n");
 491                 return ;
 492         }
 493
 494         flags = Bank_GetFlags(Client->UID);
 495         if( flags & USER_FLAG_DISABLED ) {
 496                 Client->UID = -1;
 497                 sendf(Client->Socket, "403 Account Disabled\n");
 498                 return ;
 499         }
 500         if( flags & USER_FLAG_INTERNAL ) {
 501                 Client->UID = -1;
 502                 sendf(Client->Socket, "403 Internal account\n");
 503                 return ;
 504         }
 505
 506         Client->bIsAuthed = 1;
 507         sendf(Client->Socket, "200 Auth OK\n");
 508 }
 509
 510 /**
 511  * \brief Authenticate as a user without a password
 512  *
 513  * Usage: AUTOAUTH <user>
 514  */
 515 void Server_Cmd_AUTOAUTH(tClient *Client, char *Args)
 516 {
 517         char    *username;
 518          int    userflags;
 519
 520         if( Server_int_ParseArgs(0, Args, &username, NULL) )
 521         {
 522                 sendf(Client->Socket, "407 AUTOAUTH takes 1 argument\n");
 523                 return ;
 524         }
 525
 526         // Check if trusted
 527         if( !Client->bCanAutoAuth ) {
 528                 if(giDebugLevel)
 529                         Debug(Client, "Untrusted client attempting to AUTOAUTH");
 530                 sendf(Client->Socket, "401 Untrusted\n");
 531                 return ;
 532         }
 533
 534         // Get UID
 535         Client->UID = Bank_GetAcctByName( username, 0 );
 536         if( Client->UID < 0 ) {
 537                 if(giDebugLevel)
 538                         Debug(Client, "Unknown user '%s'", username);
 539                 sendf(Client->Socket, "403 Auth Failure\n");
 540                 return ;
 541         }
 542
 543         userflags = Bank_GetFlags(Client->UID);
 544         // You can't be an internal account
 545         if( userflags & USER_FLAG_INTERNAL ) {
 546                 if(giDebugLevel)
 547                         Debug(Client, "Autoauth as '%s', not allowed", username);
 548                 Client->UID = -1;
 549                 sendf(Client->Socket, "403 Account is internal\n");
 550                 return ;
 551         }
 552
 553         // Disabled accounts
 554         if( userflags & USER_FLAG_DISABLED ) {
 555                 Client->UID = -1;
 556                 sendf(Client->Socket, "403 Account disabled\n");
 557                 return ;
 558         }
 559
 560         // Save username
 561         if(Client->Username)
 562                 free(Client->Username);
 563         Client->Username = strdup(username);
 564
 565         Client->bIsAuthed = 1;
 566
 567         if(giDebugLevel)
 568                 Debug(Client, "Auto authenticated as '%s' (%i)", username, Client->UID);
 569
 570         sendf(Client->Socket, "200 Auth OK\n");
 571 }
 572
 573 /**
 574  * \brief Authenticate as a user using the IDENT protocol
 575  *
 576  * Usage: AUTHIDENT
 577  */
 578 void Server_Cmd_AUTHIDENT(tClient *Client, char *Args)
 579 {
 580         char    *username;
 581          int    userflags;
 582         const int ident_timeout = 5;
 583
 584         if( Args != NULL && strlen(Args) ) {
 585                 sendf(Client->Socket, "407 AUTHIDENT takes no arguments\n");
 586                 return ;
 587         }
 588
 589         // Check if trusted
 590         if( !Client->bTrustedHost ) {
 591                 if(giDebugLevel)
 592                         Debug(Client, "Untrusted client attempting to AUTHIDENT");
 593                 sendf(Client->Socket, "401 Untrusted\n");
 594                 return ;
 595         }
 596
 597         // Get username via IDENT
 598         username = ident_id(Client->Socket, ident_timeout);
 599         if( !username ) {
 600                 perror("AUTHIDENT - IDENT timed out");
 601                 sendf(Client->Socket, "403 Authentication failure: IDENT auth timed out\n");
 602                 return ;
 603         }
 604
 605         // Get UID
 606         Client->UID = Bank_GetAcctByName( username, 0 );
 607         if( Client->UID < 0 ) {
 608                 if(giDebugLevel)
 609                         Debug(Client, "Unknown user '%s'", username);
 610                 sendf(Client->Socket, "403 Authentication failure: unknown account\n");
 611                 free(username);
 612                 return ;
 613         }
 614
 615         userflags = Bank_GetFlags(Client->UID);
 616         // You can't be an internal account
 617         if( userflags & USER_FLAG_INTERNAL ) {
 618                 if(giDebugLevel)
 619                         Debug(Client, "IDENT auth as '%s', not allowed", username);
 620                 Client->UID = -1;
 621                 sendf(Client->Socket, "403 Authentication failure: that account is internal\n");
 622                 free(username);
 623                 return ;
 624         }
 625
 626         // Disabled accounts
 627         if( userflags & USER_FLAG_DISABLED ) {
 628                 Client->UID = -1;
 629                 sendf(Client->Socket, "403 Authentication failure: account disabled\n");
 630                 free(username);
 631                 return ;
 632         }
 633
 634         // Save username
 635         if(Client->Username)
 636                 free(Client->Username);
 637         Client->Username = strdup(username);
 638
 639         Client->bIsAuthed = 1;
 640
 641         if(giDebugLevel)
 642                 Debug(Client, "IDENT authenticated as '%s' (%i)", username, Client->UID);
 643         free(username);
 644
 645         sendf(Client->Socket, "200 Auth OK\n");
 646 }
 647
 648 /**
 649  * \brief Set effective user
 650  */
 651 void Server_Cmd_SETEUSER(tClient *Client, char *Args)
 652 {
 653         char    *username;
 654          int    eUserFlags, userFlags;
 655
 656         if( Server_int_ParseArgs(0, Args, &username, NULL) )
 657         {
 658                 sendf(Client->Socket, "407 SETEUSER takes 1 argument\n");
 659                 return ;
 660         }
 661
 662         if( !strlen(Args) ) {
 663                 sendf(Client->Socket, "407 SETEUSER expects an argument\n");
 664                 return ;
 665         }
 666
 667         // Check authentication
 668         if( !Client->bIsAuthed ) {
 669                 sendf(Client->Socket, "401 Not Authenticated\n");
 670                 return ;
 671         }
 672
 673         // Check user permissions
 674         userFlags = Bank_GetFlags(Client->UID);
 675         if( !(userFlags & (USER_FLAG_COKE|USER_FLAG_ADMIN)) ) {
 676                 sendf(Client->Socket, "403 Not in coke\n");
 677                 return ;
 678         }
 679
 680         // Set id
 681         Client->EffectiveUID = Bank_GetAcctByName(username, 0);
 682         if( Client->EffectiveUID == -1 ) {
 683                 sendf(Client->Socket, "404 User not found\n");
 684                 return ;
 685         }
 686
 687         // You can't be an internal account
 688         if( !(userFlags & USER_FLAG_ADMIN) )
 689         {
 690                 eUserFlags = Bank_GetFlags(Client->EffectiveUID);
 691                 if( eUserFlags & USER_FLAG_INTERNAL ) {
 692                         Client->EffectiveUID = -1;
 693                         sendf(Client->Socket, "404 User not found\n");
 694                         return ;
 695                 }
 696                 // Disabled only avaliable to admins
 697                 if( eUserFlags & USER_FLAG_DISABLED ) {
 698                         Client->EffectiveUID = -1;
 699                         sendf(Client->Socket, "403 Account disabled\n");
 700                         return ;
 701                 }
 702         }
 703
 704         // Disabled accounts
 705         if( userFlags & USER_FLAG_DISABLED ) {
 706                 Client->UID = -1;
 707                 sendf(Client->Socket, "403 Account disabled\n");
 708                 return ;
 709         }
 710
 711         sendf(Client->Socket, "200 User set\n");
 712 }
 713
 714 /**
 715  * \brief Send an item status to the client
 716  * \param Client        Who to?
 717  * \param Item  Item to send
 718  */
 719 void Server_int_SendItem(tClient *Client, tItem *Item)
 720 {
 721         char    *status = "avail";
 722
 723         if( Item->Handler->CanDispense )
 724         {
 725                 switch(Item->Handler->CanDispense(Client->UID, Item->ID))
 726                 {
 727                 case  0:        status = "avail";       break;
 728                 case  1:        status = "sold";        break;
 729                 default:
 730                 case -1:        status = "error";       break;
 731                 }
 732         }
 733
 734         if( Item->Price == 0 )
 735                 status = "error";
 736         // KNOWN HACK: Naming a slot 'dead' disables it
 737         if( strcmp(Item->Name, "dead") == 0 )
 738                 status = "sold";        // Another status?
 739
 740         sendf(Client->Socket,
 741                 "202 Item %s:%i %s %i %s\n",
 742                 Item->Handler->Name, Item->ID, status, Item->Price, Item->Name
 743                 );
 744 }
 745
 746 /**
 747  * \brief Enumerate the items that the server knows about
 748  */
 749 void Server_Cmd_ENUMITEMS(tClient *Client, char *Args)
 750 {
 751          int    i, count;
 752
 753         if( Args != NULL && strlen(Args) ) {
 754                 sendf(Client->Socket, "407 ENUM_ITEMS takes no arguments\n");
 755                 return ;
 756         }
 757
 758         // Count shown items
 759         count = 0;
 760         for( i = 0; i < giNumItems; i ++ ) {
 761                 if( gaItems[i].bHidden )        continue;
 762                 count ++;
 763         }
 764
 765         sendf(Client->Socket, "201 Items %i\n", count);
 766
 767         for( i = 0; i < giNumItems; i ++ ) {
 768                 if( gaItems[i].bHidden )        continue;
 769                 Server_int_SendItem( Client, &gaItems[i] );
 770         }
 771
 772         sendf(Client->Socket, "200 List end\n");
 773 }
 774
 775 tItem *_GetItemFromString(char *String)
 776 {
 777         tHandler        *handler;
 778         char    *type = String;
 779         char    *colon = strchr(String, ':');
 780          int    num, i;
 781
 782         if( !colon ) {
 783                 return NULL;
 784         }
 785
 786         num = atoi(colon+1);
 787         *colon = '\0';
 788
 789         // Find handler
 790         handler = NULL;
 791         for( i = 0; i < giNumHandlers; i ++ )
 792         {
 793                 if( strcmp(gaHandlers[i]->Name, type) == 0) {
 794                         handler = gaHandlers[i];
 795                         break;
 796                 }
 797         }
 798         if( !handler ) {
 799                 return NULL;
 800         }
 801
 802         // Find item
 803         for( i = 0; i < giNumItems; i ++ )
 804         {
 805                 if( gaItems[i].Handler != handler )     continue;
 806                 if( gaItems[i].ID != num )      continue;
 807                 return &gaItems[i];
 808         }
 809         return NULL;
 810 }
 811
 812 /**
 813  * \brief Fetch information on a specific item
 814  */
 815 void Server_Cmd_ITEMINFO(tClient *Client, char *Args)
 816 {
 817         tItem   *item;
 818         char    *itemname;
 819
 820         if( Server_int_ParseArgs(0, Args, &itemname, NULL) ) {
 821                 sendf(Client->Socket, "407 ITEMINFO takes 1 argument\n");
 822                 return ;
 823         }
 824         item = _GetItemFromString(Args);
 825
 826         if( !item ) {
 827                 sendf(Client->Socket, "406 Bad Item ID\n");
 828                 return ;
 829         }
 830
 831         Server_int_SendItem( Client, item );
 832 }
 833
 834 void Server_Cmd_DISPENSE(tClient *Client, char *Args)
 835 {
 836         tItem   *item;
 837          int    ret;
 838          int    uid;
 839         char    *itemname;
 840
 841         if( Server_int_ParseArgs(0, Args, &itemname, NULL) ) {
 842                 sendf(Client->Socket, "407 DISPENSE takes only 1 argument\n");
 843                 return ;
 844         }
 845
 846         if( !Client->bIsAuthed ) {
 847                 sendf(Client->Socket, "401 Not Authenticated\n");
 848                 return ;
 849         }
 850
 851         item = _GetItemFromString(itemname);
 852         if( !item ) {
 853                 sendf(Client->Socket, "406 Bad Item ID\n");
 854                 return ;
 855         }
 856
 857         if( Client->EffectiveUID != -1 ) {
 858                 uid = Client->EffectiveUID;
 859         }
 860         else {
 861                 uid = Client->UID;
 862         }
 863
 864         switch( ret = DispenseItem( Client->UID, uid, item ) )
 865         {
 866         case 0: sendf(Client->Socket, "200 Dispense OK\n");     return ;
 867         case 1: sendf(Client->Socket, "501 Unable to dispense\n");      return ;
 868         case 2: sendf(Client->Socket, "402 Poor You\n");        return ;
 869         default:
 870                 sendf(Client->Socket, "500 Dispense Error (%i)\n", ret);
 871                 return ;
 872         }
 873 }
 874
 875 void Server_Cmd_REFUND(tClient *Client, char *Args)
 876 {
 877         tItem   *item;
 878          int    uid, price_override = 0;
 879         char    *username, *itemname, *price_str;
 880
 881         if( Server_int_ParseArgs(0, Args, &username, &itemname, &price_str, NULL) ) {
 882                 if( !itemname || price_str ) {
 883                         sendf(Client->Socket, "407 REFUND takes 2 or 3 arguments\n");
 884                         return ;
 885                 }
 886         }
 887
 888         if( !Client->bIsAuthed ) {
 889                 sendf(Client->Socket, "401 Not Authenticated\n");
 890                 return ;
 891         }
 892
 893         // Check user permissions
 894         if( !(Bank_GetFlags(Client->UID) & (USER_FLAG_COKE|USER_FLAG_ADMIN))  ) {
 895                 sendf(Client->Socket, "403 Not in coke\n");
 896                 return ;
 897         }
 898
 899         uid = Bank_GetAcctByName(username, 0);
 900         if( uid == -1 ) {
 901                 sendf(Client->Socket, "404 Unknown user\n");
 902                 return ;
 903         }
 904
 905         item = _GetItemFromString(itemname);
 906         if( !item ) {
 907                 sendf(Client->Socket, "406 Bad Item ID\n");
 908                 return ;
 909         }
 910
 911         if( price_str )
 912                 price_override = atoi(price_str);
 913
 914         switch( DispenseRefund( Client->UID, uid, item, price_override ) )
 915         {
 916         case 0: sendf(Client->Socket, "200 Item Refunded\n");   return ;
 917         default:
 918                 sendf(Client->Socket, "500 Dispense Error\n");
 919                 return;
 920         }
 921 }
 922
 923 void Server_Cmd_GIVE(tClient *Client, char *Args)
 924 {
 925         char    *recipient, *ammount, *reason;
 926          int    uid, iAmmount;
 927          int    thisUid;
 928
 929         // Parse arguments
 930         if( Server_int_ParseArgs(1, Args, &recipient, &ammount, &reason, NULL) ) {
 931                 sendf(Client->Socket, "407 GIVE takes only 3 arguments\n");
 932                 return ;
 933         }
 934
 935         // Check for authed
 936         if( !Client->bIsAuthed ) {
 937                 sendf(Client->Socket, "401 Not Authenticated\n");
 938                 return ;
 939         }
 940
 941         // Get recipient
 942         uid = Bank_GetAcctByName(recipient, 0);
 943         if( uid == -1 ) {
 944                 sendf(Client->Socket, "404 Invalid target user\n");
 945                 return ;
 946         }
 947
 948         // You can't alter an internal account
 949 //      if( Bank_GetFlags(uid) & USER_FLAG_INTERNAL ) {
 950 //              sendf(Client->Socket, "404 Invalid target user\n");
 951 //              return ;
 952 //      }
 953
 954         // Parse ammount
 955         iAmmount = atoi(ammount);
 956         if( iAmmount <= 0 ) {
 957                 sendf(Client->Socket, "407 Invalid Argument, ammount must be > zero\n");
 958                 return ;
 959         }
 960
 961         if( Client->EffectiveUID != -1 ) {
 962                 thisUid = Client->EffectiveUID;
 963         }
 964         else {
 965                 thisUid = Client->UID;
 966         }
 967
 968         // Do give
 969         switch( DispenseGive(Client->UID, thisUid, uid, iAmmount, reason) )
 970         {
 971         case 0:
 972                 sendf(Client->Socket, "200 Give OK\n");
 973                 return ;
 974         case 2:
 975                 sendf(Client->Socket, "402 Poor You\n");
 976                 return ;
 977         default:
 978                 sendf(Client->Socket, "500 Unknown error\n");
 979                 return ;
 980         }
 981 }
 982
 983 void Server_Cmd_DONATE(tClient *Client, char *Args)
 984 {
 985         char    *ammount, *reason;
 986          int    iAmmount;
 987          int    thisUid;
 988
 989         // Parse arguments
 990         if( Server_int_ParseArgs(1, Args, &ammount, &reason, NULL) ) {
 991                 sendf(Client->Socket, "407 DONATE takes 2 arguments\n");
 992                 return ;
 993         }
 994
 995         if( !Client->bIsAuthed ) {
 996                 sendf(Client->Socket, "401 Not Authenticated\n");
 997                 return ;
 998         }
 999
1000         // Parse ammount
1001         iAmmount = atoi(ammount);
1002         if( iAmmount <= 0 ) {
1003                 sendf(Client->Socket, "407 Invalid Argument, ammount must be > zero\n");
1004                 return ;
1005         }
1006
1007         // Handle effective users
1008         if( Client->EffectiveUID != -1 ) {
1009                 thisUid = Client->EffectiveUID;
1010         }
1011         else {
1012                 thisUid = Client->UID;
1013         }
1014
1015         // Do give
1016         switch( DispenseDonate(Client->UID, thisUid, iAmmount, reason) )
1017         {
1018         case 0:
1019                 sendf(Client->Socket, "200 Give OK\n");
1020                 return ;
1021         case 2:
1022                 sendf(Client->Socket, "402 Poor You\n");
1023                 return ;
1024         default:
1025                 sendf(Client->Socket, "500 Unknown error\n");
1026                 return ;
1027         }
1028 }
1029
1030 void Server_Cmd_ADD(tClient *Client, char *Args)
1031 {
1032         char    *user, *ammount, *reason;
1033          int    uid, iAmmount;
1034
1035         // Parse arguments
1036         if( Server_int_ParseArgs(1, Args, &user, &ammount, &reason, NULL) ) {
1037                 sendf(Client->Socket, "407 ADD takes 3 arguments\n");
1038                 return ;
1039         }
1040
1041         if( !Client->bIsAuthed ) {
1042                 sendf(Client->Socket, "401 Not Authenticated\n");
1043                 return ;
1044         }
1045
1046         // Check user permissions
1047         if( !(Bank_GetFlags(Client->UID) & (USER_FLAG_COKE|USER_FLAG_ADMIN))  ) {
1048                 sendf(Client->Socket, "403 Not in coke\n");
1049                 return ;
1050         }
1051
1052         #if !ROOT_CAN_ADD
1053         if( strcmp( Client->Username, "root" ) == 0 ) {
1054                 // Allow adding for new users
1055                 if( strcmp(reason, "treasurer: new user") != 0 ) {
1056                         sendf(Client->Socket, "403 Root may not add\n");
1057                         return ;
1058                 }
1059         }
1060         #endif
1061
1062         #if HACK_NO_REFUNDS
1063         if( strstr(reason, "refund") != NULL || strstr(reason, "misdispense") != NULL )
1064         {
1065                 sendf(Client->Socket, "499 Don't use `dispense acct` for refunds, use `dispense refund` (and `dispense -G` to get item IDs)\n");
1066                 return ;
1067         }
1068         #endif
1069
1070         // Get recipient
1071         uid = Bank_GetAcctByName(user, 0);
1072         if( uid == -1 ) {
1073                 sendf(Client->Socket, "404 Invalid user\n");
1074                 return ;
1075         }
1076
1077         // You can't alter an internal account
1078         if( !(Bank_GetFlags(Client->UID) & USER_FLAG_ADMIN) )
1079         {
1080                 if( Bank_GetFlags(uid) & USER_FLAG_INTERNAL ) {
1081                         sendf(Client->Socket, "404 Invalid user\n");
1082                         return ;
1083                 }
1084                 // TODO: Maybe disallow changes to disabled?
1085         }
1086
1087         // Parse ammount
1088         iAmmount = atoi(ammount);
1089         if( iAmmount == 0 && ammount[0] != '0' ) {
1090                 sendf(Client->Socket, "407 Invalid Argument\n");
1091                 return ;
1092         }
1093
1094         // Do give
1095         switch( DispenseAdd(Client->UID, uid, iAmmount, reason) )
1096         {
1097         case 0:
1098                 sendf(Client->Socket, "200 Add OK\n");
1099                 return ;
1100         case 2:
1101                 sendf(Client->Socket, "402 Poor Guy\n");
1102                 return ;
1103         default:
1104                 sendf(Client->Socket, "500 Unknown error\n");
1105                 return ;
1106         }
1107 }
1108
1109 void Server_Cmd_SET(tClient *Client, char *Args)
1110 {
1111         char    *user, *ammount, *reason;
1112          int    uid, iAmmount;
1113
1114         // Parse arguments
1115         if( Server_int_ParseArgs(1, Args, &user, &ammount, &reason, NULL) ) {
1116                 sendf(Client->Socket, "407 SET takes 3 arguments\n");
1117                 return ;
1118         }
1119
1120         if( !Client->bIsAuthed ) {
1121                 sendf(Client->Socket, "401 Not Authenticated\n");
1122                 return ;
1123         }
1124
1125         // Check user permissions
1126         if( !(Bank_GetFlags(Client->UID) & USER_FLAG_ADMIN)  ) {
1127                 sendf(Client->Socket, "403 Not an admin\n");
1128                 return ;
1129         }
1130
1131         // Get recipient
1132         uid = Bank_GetAcctByName(user, 0);
1133         if( uid == -1 ) {
1134                 sendf(Client->Socket, "404 Invalid user\n");
1135                 return ;
1136         }
1137
1138         // Parse ammount
1139         iAmmount = atoi(ammount);
1140         if( iAmmount == 0 && ammount[0] != '0' ) {
1141                 sendf(Client->Socket, "407 Invalid Argument\n");
1142                 return ;
1143         }
1144
1145         // Do give
1146         switch( DispenseSet(Client->UID, uid, iAmmount, reason) )
1147         {
1148         case 0:
1149                 sendf(Client->Socket, "200 Add OK\n");
1150                 return ;
1151         case 2:
1152                 sendf(Client->Socket, "402 Poor Guy\n");
1153                 return ;
1154         default:
1155                 sendf(Client->Socket, "500 Unknown error\n");
1156                 return ;
1157         }
1158 }
1159
1160 void Server_Cmd_ENUMUSERS(tClient *Client, char *Args)
1161 {
1162          int    i, numRet = 0;
1163         tAcctIterator   *it;
1164          int    maxBal = INT_MAX, minBal = INT_MIN;
1165          int    flagMask = 0, flagVal = 0;
1166          int    sort = BANK_ITFLAG_SORT_NAME;
1167         time_t  lastSeenAfter=0, lastSeenBefore=0;
1168
1169          int    flags;  // Iterator flags
1170          int    balValue;       // Balance value for iterator
1171         time_t  timeValue;      // Time value for iterator
1172
1173         // Parse arguments
1174         if( Args && strlen(Args) )
1175         {
1176                 char    *space = Args, *type, *val;
1177                 do
1178                 {
1179                         type = space;
1180                         while(*type == ' ')     type ++;
1181                         // Get next space
1182                         space = strchr(space, ' ');
1183                         if(space)       *space = '\0';
1184
1185                         // Get type
1186                         val = strchr(type, ':');
1187                         if( val ) {
1188                                 *val = '\0';
1189                                 val ++;
1190
1191                                 // Types
1192                                 // - Minium Balance
1193                                 if( strcmp(type, "min_balance") == 0 ) {
1194                                         minBal = atoi(val);
1195                                 }
1196                                 // - Maximum Balance
1197                                 else if( strcmp(type, "max_balance") == 0 ) {
1198                                         maxBal = atoi(val);
1199                                 }
1200                                 // - Flags
1201                                 else if( strcmp(type, "flags") == 0 ) {
1202                                         if( Server_int_ParseFlags(Client, val, &flagMask, &flagVal) )
1203                                                 return ;
1204                                 }
1205                                 // - Last seen before timestamp
1206                                 else if( strcmp(type, "last_seen_before") == 0 ) {
1207                                         lastSeenAfter = atoll(val);
1208                                 }
1209                                 // - Last seen after timestamp
1210                                 else if( strcmp(type, "last_seen_after") == 0 ) {
1211                                         lastSeenAfter = atoll(val);
1212                                 }
1213                                 // - Sorting
1214                                 else if( strcmp(type, "sort") == 0 ) {
1215                                         char    *dash = strchr(val, '-');
1216                                         if( dash ) {
1217                                                 *dash = '\0';
1218                                                 dash ++;
1219                                         }
1220                                         if( strcmp(val, "name") == 0 ) {
1221                                                 sort = BANK_ITFLAG_SORT_NAME;
1222                                         }
1223                                         else if( strcmp(val, "balance") == 0 ) {
1224                                                 sort = BANK_ITFLAG_SORT_BAL;
1225                                         }
1226                                         else if( strcmp(val, "lastseen") == 0 ) {
1227                                                 sort = BANK_ITFLAG_SORT_LASTSEEN;
1228                                         }
1229                                         else {
1230                                                 sendf(Client->Socket, "407 Unknown sort field ('%s')\n", val);
1231                                                 return ;
1232                                         }
1233                                         // Handle sort direction
1234                                         if( dash ) {
1235                                                 if( strcmp(dash, "desc") == 0 ) {
1236                                                         sort |= BANK_ITFLAG_REVSORT;
1237                                                 }
1238                                                 else {
1239                                                         sendf(Client->Socket, "407 Unknown sort direction '%s'\n", dash);
1240                                                         return ;
1241                                                 }
1242                                                 dash[-1] = '-';
1243                                         }
1244                                 }
1245                                 else {
1246                                         sendf(Client->Socket, "407 Unknown argument to ENUM_USERS '%s:%s'\n", type, val);
1247                                         return ;
1248                                 }
1249
1250                                 val[-1] = ':';
1251                         }
1252                         else {
1253                                 sendf(Client->Socket, "407 Unknown argument to ENUM_USERS '%s'\n", type);
1254                                 return ;
1255                         }
1256
1257                         // Eat whitespace
1258                         if( space ) {
1259                                 *space = ' ';   // Repair (to be nice)
1260                                 space ++;
1261                                 while(*space == ' ')    space ++;
1262                         }
1263                 }       while(space);
1264         }
1265
1266         // Create iterator
1267         if( maxBal != INT_MAX ) {
1268                 flags = sort|BANK_ITFLAG_MAXBALANCE;
1269                 balValue = maxBal;
1270         }
1271         else if( minBal != INT_MIN ) {
1272                 flags = sort|BANK_ITFLAG_MINBALANCE;
1273                 balValue = minBal;
1274         }
1275         else {
1276                 flags = sort;
1277                 balValue = 0;
1278         }
1279         if( lastSeenBefore ) {
1280                 timeValue = lastSeenBefore;
1281                 flags |= BANK_ITFLAG_SEENBEFORE;
1282         }
1283         else if( lastSeenAfter ) {
1284                 timeValue = lastSeenAfter;
1285                 flags |= BANK_ITFLAG_SEENAFTER;
1286         }
1287         else {
1288                 timeValue = 0;
1289         }
1290         it = Bank_Iterator(flagMask, flagVal, flags, balValue, timeValue);
1291
1292         // Get return number
1293         while( (i = Bank_IteratorNext(it)) != -1 )
1294         {
1295                 int bal = Bank_GetBalance(i);
1296
1297                 if( bal == INT_MIN )    continue;
1298
1299                 if( bal < minBal )      continue;
1300                 if( bal > maxBal )      continue;
1301
1302                 numRet ++;
1303         }
1304
1305         Bank_DelIterator(it);
1306
1307         // Send count
1308         sendf(Client->Socket, "201 Users %i\n", numRet);
1309
1310
1311         // Create iterator
1312         it = Bank_Iterator(flagMask, flagVal, flags, balValue, timeValue);
1313
1314         while( (i = Bank_IteratorNext(it)) != -1 )
1315         {
1316                 int bal = Bank_GetBalance(i);
1317
1318                 if( bal == INT_MIN )    continue;
1319
1320                 if( bal < minBal )      continue;
1321                 if( bal > maxBal )      continue;
1322
1323                 _SendUserInfo(Client, i);
1324         }
1325
1326         Bank_DelIterator(it);
1327
1328         sendf(Client->Socket, "200 List End\n");
1329 }
1330
1331 void Server_Cmd_USERINFO(tClient *Client, char *Args)
1332 {
1333          int    uid;
1334         char    *user;
1335
1336         // Parse arguments
1337         if( Server_int_ParseArgs(0, Args, &user, NULL) ) {
1338                 sendf(Client->Socket, "407 USER_INFO takes 1 argument\n");
1339                 return ;
1340         }
1341
1342         if( giDebugLevel )      Debug(Client, "User Info '%s'", user);
1343
1344         // Get recipient
1345         uid = Bank_GetAcctByName(user, 0);
1346
1347         if( giDebugLevel >= 2 ) Debug(Client, "uid = %i", uid);
1348         if( uid == -1 ) {
1349                 sendf(Client->Socket, "404 Invalid user\n");
1350                 return ;
1351         }
1352
1353         _SendUserInfo(Client, uid);
1354 }
1355
1356 void _SendUserInfo(tClient *Client, int UserID)
1357 {
1358         char    *type, *disabled="", *door="";
1359          int    flags = Bank_GetFlags(UserID);
1360
1361         if( flags & USER_FLAG_INTERNAL ) {
1362                 type = "internal";
1363         }
1364         else if( flags & USER_FLAG_COKE ) {
1365                 if( flags & USER_FLAG_ADMIN )
1366                         type = "coke,admin";
1367                 else
1368                         type = "coke";
1369         }
1370         else if( flags & USER_FLAG_ADMIN ) {
1371                 type = "admin";
1372         }
1373         else {
1374                 type = "user";
1375         }
1376
1377         if( flags & USER_FLAG_DISABLED )
1378                 disabled = ",disabled";
1379         if( flags & USER_FLAG_DOORGROUP )
1380                 door = ",door";
1381
1382         // TODO: User flags/type
1383         sendf(
1384                 Client->Socket, "202 User %s %i %s%s%s\n",
1385                 Bank_GetAcctName(UserID), Bank_GetBalance(UserID),
1386                 type, disabled, door
1387                 );
1388 }
1389
1390 void Server_Cmd_USERADD(tClient *Client, char *Args)
1391 {
1392         char    *username;
1393
1394         // Parse arguments
1395         if( Server_int_ParseArgs(0, Args, &username, NULL) ) {
1396                 sendf(Client->Socket, "407 USER_ADD takes 1 argument\n");
1397                 return ;
1398         }
1399
1400         // Check authentication
1401         if( !Client->bIsAuthed ) {
1402                 sendf(Client->Socket, "401 Not Authenticated\n");
1403                 return ;
1404         }
1405
1406         // Check permissions
1407         if( !(Bank_GetFlags(Client->UID) & USER_FLAG_ADMIN) ) {
1408                 sendf(Client->Socket, "403 Not a coke admin\n");
1409                 return ;
1410         }
1411
1412         // Try to create user
1413         if( Bank_CreateAcct(username) == -1 ) {
1414                 sendf(Client->Socket, "404 User exists\n");
1415                 return ;
1416         }
1417
1418         {
1419                 char    *thisName = Bank_GetAcctName(Client->UID);
1420                 Log_Info("Account '%s' created by '%s'", username, thisName);
1421                 free(thisName);
1422         }
1423
1424         sendf(Client->Socket, "200 User Added\n");
1425 }
1426
1427 void Server_Cmd_USERFLAGS(tClient *Client, char *Args)
1428 {
1429         char    *username, *flags, *reason=NULL;
1430          int    mask=0, value=0;
1431          int    uid;
1432
1433         // Parse arguments
1434         if( Server_int_ParseArgs(1, Args, &username, &flags, &reason, NULL) ) {
1435                 if( !flags ) {
1436                         sendf(Client->Socket, "407 USER_FLAGS takes at least 2 arguments\n");
1437                         return ;
1438                 }
1439                 reason = "";
1440         }
1441
1442         // Check authentication
1443         if( !Client->bIsAuthed ) {
1444                 sendf(Client->Socket, "401 Not Authenticated\n");
1445                 return ;
1446         }
1447
1448         // Check permissions
1449         if( !(Bank_GetFlags(Client->UID) & USER_FLAG_ADMIN) ) {
1450                 sendf(Client->Socket, "403 Not a coke admin\n");
1451                 return ;
1452         }
1453
1454         // Get UID
1455         uid = Bank_GetAcctByName(username, 0);
1456         if( uid == -1 ) {
1457                 sendf(Client->Socket, "404 User '%s' not found\n", username);
1458                 return ;
1459         }
1460
1461         // Parse flags
1462         if( Server_int_ParseFlags(Client, flags, &mask, &value) )
1463                 return ;
1464
1465         if( giDebugLevel )
1466                 Debug(Client, "Set %i(%s) flags to %x (masked %x)\n",
1467                         uid, username, mask, value);
1468
1469         // Apply flags
1470         Bank_SetFlags(uid, mask, value);
1471
1472         // Log the change
1473         Log_Info("Updated '%s' with flag set '%s' by '%s' - Reason: %s",
1474                 username, flags, Client->Username, reason);
1475
1476         // Return OK
1477         sendf(Client->Socket, "200 User Updated\n");
1478 }
1479
1480 void Server_Cmd_UPDATEITEM(tClient *Client, char *Args)
1481 {
1482         char    *itemname, *price_str, *description;
1483          int    price;
1484         tItem   *item;
1485
1486         if( Server_int_ParseArgs(1, Args, &itemname, &price_str, &description, NULL) ) {
1487                 sendf(Client->Socket, "407 UPDATE_ITEM takes 3 arguments\n");
1488                 return ;
1489         }
1490
1491         if( !Client->bIsAuthed ) {
1492                 sendf(Client->Socket, "401 Not Authenticated\n");
1493                 return ;
1494         }
1495
1496         // Check user permissions
1497         if( !(Bank_GetFlags(Client->UID) & (USER_FLAG_COKE|USER_FLAG_ADMIN))  ) {
1498                 sendf(Client->Socket, "403 Not in coke\n");
1499                 return ;
1500         }
1501
1502         item = _GetItemFromString(itemname);
1503         if( !item ) {
1504                 // TODO: Create item?
1505                 sendf(Client->Socket, "406 Bad Item ID\n");
1506                 return ;
1507         }
1508
1509         price = atoi(price_str);
1510         if( price <= 0 && price_str[0] != '0' ) {
1511                 sendf(Client->Socket, "407 Invalid price set\n");
1512         }
1513
1514         switch( DispenseUpdateItem( Client->UID, item, description, price ) )
1515         {
1516         case 0:
1517                 // Return OK
1518                 sendf(Client->Socket, "200 Item updated\n");
1519                 break;
1520         default:
1521                 break;
1522         }
1523 }
1524
1525 // --- INTERNAL HELPERS ---
1526 void Debug(tClient *Client, const char *Format, ...)
1527 {
1528         va_list args;
1529         //printf("%010i [%i] ", (int)time(NULL), Client->ID);
1530         printf("[%i] ", Client->ID);
1531         va_start(args, Format);
1532         vprintf(Format, args);
1533         va_end(args);
1534         printf("\n");
1535 }
1536
1537 int sendf(int Socket, const char *Format, ...)
1538 {
1539         va_list args;
1540          int    len;
1541
1542         va_start(args, Format);
1543         len = vsnprintf(NULL, 0, Format, args);
1544         va_end(args);
1545
1546         {
1547                 char    buf[len+1];
1548                 va_start(args, Format);
1549                 vsnprintf(buf, len+1, Format, args);
1550                 va_end(args);
1551
1552                 #if DEBUG_TRACE_CLIENT
1553                 printf("sendf: %s", buf);
1554                 #endif
1555
1556                 return send(Socket, buf, len, 0);
1557         }
1558 }
1559
1560 // Takes a series of char *'s in
1561 /**
1562  * \brief Parse space-separated entries into
1563  */
1564 int Server_int_ParseArgs(int bUseLongLast, char *ArgStr, ...)
1565 {
1566         va_list args;
1567         char    savedChar;
1568         char    **dest;
1569         va_start(args, ArgStr);
1570
1571         // Check for null
1572         if( !ArgStr )
1573         {
1574                 while( (dest = va_arg(args, char **)) )
1575                         *dest = NULL;
1576                 va_end(args);
1577                 return 1;
1578         }
1579
1580         savedChar = *ArgStr;
1581
1582         while( (dest = va_arg(args, char **)) )
1583         {
1584                 // Trim leading spaces
1585                 while( *ArgStr == ' ' || *ArgStr == '\t' )
1586                         ArgStr ++;
1587
1588                 // ... oops, not enough arguments
1589                 if( *ArgStr == '\0' )
1590                 {
1591                         // NULL unset arguments
1592                         do {
1593                                 *dest = NULL;
1594                         }       while( (dest = va_arg(args, char **)) );
1595                 va_end(args);
1596                         return -1;
1597                 }
1598
1599                 if( *ArgStr == '"' )
1600                 {
1601                         ArgStr ++;
1602                         *dest = ArgStr;
1603                         // Read until quote
1604                         while( *ArgStr && *ArgStr != '"' )
1605                                 ArgStr ++;
1606                 }
1607                 else
1608                 {
1609                         // Set destination
1610                         *dest = ArgStr;
1611                         // Read until a space
1612                         while( *ArgStr && *ArgStr != ' ' && *ArgStr != '\t' )
1613                                 ArgStr ++;
1614                 }
1615                 savedChar = *ArgStr;    // savedChar is used to un-mangle the last string
1616                 *ArgStr = '\0';
1617                 ArgStr ++;
1618         }
1619         va_end(args);
1620
1621         // Oops, extra arguments, and greedy not set
1622         if( (savedChar == ' ' || savedChar == '\t') && !bUseLongLast ) {
1623                 return -1;
1624         }
1625
1626         // Un-mangle last
1627         if(bUseLongLast) {
1628                 ArgStr --;
1629                 *ArgStr = savedChar;
1630         }
1631
1632         return 0;       // Success!
1633 }
1634
1635 int Server_int_ParseFlags(tClient *Client, const char *Str, int *Mask, int *Value)
1636 {
1637         struct {
1638                 const char      *Name;
1639                  int    Mask;
1640                  int    Value;
1641         }       cFLAGS[] = {
1642                  {"disabled", USER_FLAG_DISABLED, USER_FLAG_DISABLED}
1643                 ,{"door", USER_FLAG_DOORGROUP, USER_FLAG_DOORGROUP}
1644                 ,{"coke", USER_FLAG_COKE, USER_FLAG_COKE}
1645                 ,{"admin", USER_FLAG_ADMIN, USER_FLAG_ADMIN}
1646                 ,{"internal", USER_FLAG_INTERNAL, USER_FLAG_INTERNAL}
1647         };
1648         const int       ciNumFlags = sizeof(cFLAGS)/sizeof(cFLAGS[0]);
1649
1650         char    *space;
1651
1652         *Mask = 0;
1653         *Value = 0;
1654
1655         do {
1656                  int    bRemove = 0;
1657                  int    i;
1658                  int    len;
1659
1660                 while( *Str == ' ' )    Str ++; // Eat whitespace
1661                 space = strchr(Str, ',');       // Find the end of the flag
1662                 if(space)
1663                         len = space - Str;
1664                 else
1665                         len = strlen(Str);
1666
1667                 // Check for inversion/removal
1668                 if( *Str == '!' || *Str == '-' ) {
1669                         bRemove = 1;
1670                         Str ++;
1671                 }
1672                 else if( *Str == '+' ) {
1673                         Str ++;
1674                 }
1675
1676                 // Check flag values
1677                 for( i = 0; i < ciNumFlags; i ++ )
1678                 {
1679                         if( strncmp(Str, cFLAGS[i].Name, len) == 0 ) {
1680                                 *Mask |= cFLAGS[i].Mask;
1681                                 *Value &= ~cFLAGS[i].Mask;
1682                                 if( !bRemove )
1683                                         *Value |= cFLAGS[i].Value;
1684                                 break;
1685                         }
1686                 }
1687
1688                 // Error check
1689                 if( i == ciNumFlags ) {
1690                         char    val[len+1];
1691                         strncpy(val, Str, len+1);
1692                         sendf(Client->Socket, "407 Unknown flag value '%s'\n", val);
1693                         return -1;
1694                 }
1695
1696                 Str = space + 1;
1697         } while(space);
1698
1699         return 0;
1700 }