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                 sendf(Client->Socket, "403 Authentication failure: IDENT auth timed out\n");
 601                 return ;
 602         }
 603
 604         // Get UID
 605         Client->UID = Bank_GetAcctByName( username, 0 );
 606         if( Client->UID < 0 ) {
 607                 if(giDebugLevel)
 608                         Debug(Client, "Unknown user '%s'", username);
 609                 sendf(Client->Socket, "403 Authentication failure: unknown account\n");
 610                 free(username);
 611                 return ;
 612         }
 613
 614         userflags = Bank_GetFlags(Client->UID);
 615         // You can't be an internal account
 616         if( userflags & USER_FLAG_INTERNAL ) {
 617                 if(giDebugLevel)
 618                         Debug(Client, "IDENT auth as '%s', not allowed", username);
 619                 Client->UID = -1;
 620                 sendf(Client->Socket, "403 Authentication failure: that account is internal\n");
 621                 free(username);
 622                 return ;
 623         }
 624
 625         // Disabled accounts
 626         if( userflags & USER_FLAG_DISABLED ) {
 627                 Client->UID = -1;
 628                 sendf(Client->Socket, "403 Authentication failure: account disabled\n");
 629                 free(username);
 630                 return ;
 631         }
 632
 633         // Save username
 634         if(Client->Username)
 635                 free(Client->Username);
 636         Client->Username = strdup(username);
 637
 638         Client->bIsAuthed = 1;
 639
 640         if(giDebugLevel)
 641                 Debug(Client, "IDENT authenticated as '%s' (%i)", username, Client->UID);
 642         free(username);
 643
 644         sendf(Client->Socket, "200 Auth OK\n");
 645 }
 646
 647 /**
 648  * \brief Set effective user
 649  */
 650 void Server_Cmd_SETEUSER(tClient *Client, char *Args)
 651 {
 652         char    *username;
 653          int    eUserFlags, userFlags;
 654
 655         if( Server_int_ParseArgs(0, Args, &username, NULL) )
 656         {
 657                 sendf(Client->Socket, "407 SETEUSER takes 1 argument\n");
 658                 return ;
 659         }
 660
 661         if( !strlen(Args) ) {
 662                 sendf(Client->Socket, "407 SETEUSER expects an argument\n");
 663                 return ;
 664         }
 665
 666         // Check authentication
 667         if( !Client->bIsAuthed ) {
 668                 sendf(Client->Socket, "401 Not Authenticated\n");
 669                 return ;
 670         }
 671
 672         // Check user permissions
 673         userFlags = Bank_GetFlags(Client->UID);
 674         if( !(userFlags & (USER_FLAG_COKE|USER_FLAG_ADMIN)) ) {
 675                 sendf(Client->Socket, "403 Not in coke\n");
 676                 return ;
 677         }
 678
 679         // Set id
 680         Client->EffectiveUID = Bank_GetAcctByName(username, 0);
 681         if( Client->EffectiveUID == -1 ) {
 682                 sendf(Client->Socket, "404 User not found\n");
 683                 return ;
 684         }
 685
 686         // You can't be an internal account
 687         if( !(userFlags & USER_FLAG_ADMIN) )
 688         {
 689                 eUserFlags = Bank_GetFlags(Client->EffectiveUID);
 690                 if( eUserFlags & USER_FLAG_INTERNAL ) {
 691                         Client->EffectiveUID = -1;
 692                         sendf(Client->Socket, "404 User not found\n");
 693                         return ;
 694                 }
 695                 // Disabled only avaliable to admins
 696                 if( eUserFlags & USER_FLAG_DISABLED ) {
 697                         Client->EffectiveUID = -1;
 698                         sendf(Client->Socket, "403 Account disabled\n");
 699                         return ;
 700                 }
 701         }
 702
 703         // Disabled accounts
 704         if( userFlags & USER_FLAG_DISABLED ) {
 705                 Client->UID = -1;
 706                 sendf(Client->Socket, "403 Account disabled\n");
 707                 return ;
 708         }
 709
 710         sendf(Client->Socket, "200 User set\n");
 711 }
 712
 713 /**
 714  * \brief Send an item status to the client
 715  * \param Client        Who to?
 716  * \param Item  Item to send
 717  */
 718 void Server_int_SendItem(tClient *Client, tItem *Item)
 719 {
 720         char    *status = "avail";
 721
 722         if( Item->Handler->CanDispense )
 723         {
 724                 switch(Item->Handler->CanDispense(Client->UID, Item->ID))
 725                 {
 726                 case  0:        status = "avail";       break;
 727                 case  1:        status = "sold";        break;
 728                 default:
 729                 case -1:        status = "error";       break;
 730                 }
 731         }
 732
 733         if( Item->Price == 0 )
 734                 status = "error";
 735         // KNOWN HACK: Naming a slot 'dead' disables it
 736         if( strcmp(Item->Name, "dead") == 0 )
 737                 status = "sold";        // Another status?
 738
 739         sendf(Client->Socket,
 740                 "202 Item %s:%i %s %i %s\n",
 741                 Item->Handler->Name, Item->ID, status, Item->Price, Item->Name
 742                 );
 743 }
 744
 745 /**
 746  * \brief Enumerate the items that the server knows about
 747  */
 748 void Server_Cmd_ENUMITEMS(tClient *Client, char *Args)
 749 {
 750          int    i, count;
 751
 752         if( Args != NULL && strlen(Args) ) {
 753                 sendf(Client->Socket, "407 ENUM_ITEMS takes no arguments\n");
 754                 return ;
 755         }
 756
 757         // Count shown items
 758         count = 0;
 759         for( i = 0; i < giNumItems; i ++ ) {
 760                 if( gaItems[i].bHidden )        continue;
 761                 count ++;
 762         }
 763
 764         sendf(Client->Socket, "201 Items %i\n", count);
 765
 766         for( i = 0; i < giNumItems; i ++ ) {
 767                 if( gaItems[i].bHidden )        continue;
 768                 Server_int_SendItem( Client, &gaItems[i] );
 769         }
 770
 771         sendf(Client->Socket, "200 List end\n");
 772 }
 773
 774 tItem *_GetItemFromString(char *String)
 775 {
 776         tHandler        *handler;
 777         char    *type = String;
 778         char    *colon = strchr(String, ':');
 779          int    num, i;
 780
 781         if( !colon ) {
 782                 return NULL;
 783         }
 784
 785         num = atoi(colon+1);
 786         *colon = '\0';
 787
 788         // Find handler
 789         handler = NULL;
 790         for( i = 0; i < giNumHandlers; i ++ )
 791         {
 792                 if( strcmp(gaHandlers[i]->Name, type) == 0) {
 793                         handler = gaHandlers[i];
 794                         break;
 795                 }
 796         }
 797         if( !handler ) {
 798                 return NULL;
 799         }
 800
 801         // Find item
 802         for( i = 0; i < giNumItems; i ++ )
 803         {
 804                 if( gaItems[i].Handler != handler )     continue;
 805                 if( gaItems[i].ID != num )      continue;
 806                 return &gaItems[i];
 807         }
 808         return NULL;
 809 }
 810
 811 /**
 812  * \brief Fetch information on a specific item
 813  */
 814 void Server_Cmd_ITEMINFO(tClient *Client, char *Args)
 815 {
 816         tItem   *item;
 817         char    *itemname;
 818
 819         if( Server_int_ParseArgs(0, Args, &itemname, NULL) ) {
 820                 sendf(Client->Socket, "407 ITEMINFO takes 1 argument\n");
 821                 return ;
 822         }
 823         item = _GetItemFromString(Args);
 824
 825         if( !item ) {
 826                 sendf(Client->Socket, "406 Bad Item ID\n");
 827                 return ;
 828         }
 829
 830         Server_int_SendItem( Client, item );
 831 }
 832
 833 void Server_Cmd_DISPENSE(tClient *Client, char *Args)
 834 {
 835         tItem   *item;
 836          int    ret;
 837          int    uid;
 838         char    *itemname;
 839
 840         if( Server_int_ParseArgs(0, Args, &itemname, NULL) ) {
 841                 sendf(Client->Socket, "407 DISPENSE takes only 1 argument\n");
 842                 return ;
 843         }
 844
 845         if( !Client->bIsAuthed ) {
 846                 sendf(Client->Socket, "401 Not Authenticated\n");
 847                 return ;
 848         }
 849
 850         item = _GetItemFromString(itemname);
 851         if( !item ) {
 852                 sendf(Client->Socket, "406 Bad Item ID\n");
 853                 return ;
 854         }
 855
 856         if( Client->EffectiveUID != -1 ) {
 857                 uid = Client->EffectiveUID;
 858         }
 859         else {
 860                 uid = Client->UID;
 861         }
 862
 863         switch( ret = DispenseItem( Client->UID, uid, item ) )
 864         {
 865         case 0: sendf(Client->Socket, "200 Dispense OK\n");     return ;
 866         case 1: sendf(Client->Socket, "501 Unable to dispense\n");      return ;
 867         case 2: sendf(Client->Socket, "402 Poor You\n");        return ;
 868         default:
 869                 sendf(Client->Socket, "500 Dispense Error (%i)\n", ret);
 870                 return ;
 871         }
 872 }
 873
 874 void Server_Cmd_REFUND(tClient *Client, char *Args)
 875 {
 876         tItem   *item;
 877          int    uid, price_override = 0;
 878         char    *username, *itemname, *price_str;
 879
 880         if( Server_int_ParseArgs(0, Args, &username, &itemname, &price_str, NULL) ) {
 881                 if( !itemname || price_str ) {
 882                         sendf(Client->Socket, "407 REFUND takes 2 or 3 arguments\n");
 883                         return ;
 884                 }
 885         }
 886
 887         if( !Client->bIsAuthed ) {
 888                 sendf(Client->Socket, "401 Not Authenticated\n");
 889                 return ;
 890         }
 891
 892         // Check user permissions
 893         if( !(Bank_GetFlags(Client->UID) & (USER_FLAG_COKE|USER_FLAG_ADMIN))  ) {
 894                 sendf(Client->Socket, "403 Not in coke\n");
 895                 return ;
 896         }
 897
 898         uid = Bank_GetAcctByName(username, 0);
 899         if( uid == -1 ) {
 900                 sendf(Client->Socket, "404 Unknown user\n");
 901                 return ;
 902         }
 903
 904         item = _GetItemFromString(itemname);
 905         if( !item ) {
 906                 sendf(Client->Socket, "406 Bad Item ID\n");
 907                 return ;
 908         }
 909
 910         if( price_str )
 911                 price_override = atoi(price_str);
 912
 913         switch( DispenseRefund( Client->UID, uid, item, price_override ) )
 914         {
 915         case 0: sendf(Client->Socket, "200 Item Refunded\n");   return ;
 916         default:
 917                 sendf(Client->Socket, "500 Dispense Error\n");
 918                 return;
 919         }
 920 }
 921
 922 void Server_Cmd_GIVE(tClient *Client, char *Args)
 923 {
 924         char    *recipient, *ammount, *reason;
 925          int    uid, iAmmount;
 926          int    thisUid;
 927
 928         // Parse arguments
 929         if( Server_int_ParseArgs(1, Args, &recipient, &ammount, &reason, NULL) ) {
 930                 sendf(Client->Socket, "407 GIVE takes only 3 arguments\n");
 931                 return ;
 932         }
 933
 934         // Check for authed
 935         if( !Client->bIsAuthed ) {
 936                 sendf(Client->Socket, "401 Not Authenticated\n");
 937                 return ;
 938         }
 939
 940         // Get recipient
 941         uid = Bank_GetAcctByName(recipient, 0);
 942         if( uid == -1 ) {
 943                 sendf(Client->Socket, "404 Invalid target user\n");
 944                 return ;
 945         }
 946
 947         // You can't alter an internal account
 948 //      if( Bank_GetFlags(uid) & USER_FLAG_INTERNAL ) {
 949 //              sendf(Client->Socket, "404 Invalid target user\n");
 950 //              return ;
 951 //      }
 952
 953         // Parse ammount
 954         iAmmount = atoi(ammount);
 955         if( iAmmount <= 0 ) {
 956                 sendf(Client->Socket, "407 Invalid Argument, ammount must be > zero\n");
 957                 return ;
 958         }
 959
 960         if( Client->EffectiveUID != -1 ) {
 961                 thisUid = Client->EffectiveUID;
 962         }
 963         else {
 964                 thisUid = Client->UID;
 965         }
 966
 967         // Do give
 968         switch( DispenseGive(Client->UID, thisUid, uid, iAmmount, reason) )
 969         {
 970         case 0:
 971                 sendf(Client->Socket, "200 Give OK\n");
 972                 return ;
 973         case 2:
 974                 sendf(Client->Socket, "402 Poor You\n");
 975                 return ;
 976         default:
 977                 sendf(Client->Socket, "500 Unknown error\n");
 978                 return ;
 979         }
 980 }
 981
 982 void Server_Cmd_DONATE(tClient *Client, char *Args)
 983 {
 984         char    *ammount, *reason;
 985          int    iAmmount;
 986          int    thisUid;
 987
 988         // Parse arguments
 989         if( Server_int_ParseArgs(1, Args, &ammount, &reason, NULL) ) {
 990                 sendf(Client->Socket, "407 DONATE takes 2 arguments\n");
 991                 return ;
 992         }
 993
 994         if( !Client->bIsAuthed ) {
 995                 sendf(Client->Socket, "401 Not Authenticated\n");
 996                 return ;
 997         }
 998
 999         // Parse ammount
1000         iAmmount = atoi(ammount);
1001         if( iAmmount <= 0 ) {
1002                 sendf(Client->Socket, "407 Invalid Argument, ammount must be > zero\n");
1003                 return ;
1004         }
1005
1006         // Handle effective users
1007         if( Client->EffectiveUID != -1 ) {
1008                 thisUid = Client->EffectiveUID;
1009         }
1010         else {
1011                 thisUid = Client->UID;
1012         }
1013
1014         // Do give
1015         switch( DispenseDonate(Client->UID, thisUid, iAmmount, reason) )
1016         {
1017         case 0:
1018                 sendf(Client->Socket, "200 Give OK\n");
1019                 return ;
1020         case 2:
1021                 sendf(Client->Socket, "402 Poor You\n");
1022                 return ;
1023         default:
1024                 sendf(Client->Socket, "500 Unknown error\n");
1025                 return ;
1026         }
1027 }
1028
1029 void Server_Cmd_ADD(tClient *Client, char *Args)
1030 {
1031         char    *user, *ammount, *reason;
1032          int    uid, iAmmount;
1033
1034         // Parse arguments
1035         if( Server_int_ParseArgs(1, Args, &user, &ammount, &reason, NULL) ) {
1036                 sendf(Client->Socket, "407 ADD takes 3 arguments\n");
1037                 return ;
1038         }
1039
1040         if( !Client->bIsAuthed ) {
1041                 sendf(Client->Socket, "401 Not Authenticated\n");
1042                 return ;
1043         }
1044
1045         // Check user permissions
1046         if( !(Bank_GetFlags(Client->UID) & (USER_FLAG_COKE|USER_FLAG_ADMIN))  ) {
1047                 sendf(Client->Socket, "403 Not in coke\n");
1048                 return ;
1049         }
1050
1051         #if !ROOT_CAN_ADD
1052         if( strcmp( Client->Username, "root" ) == 0 ) {
1053                 // Allow adding for new users
1054                 if( strcmp(reason, "treasurer: new user") != 0 ) {
1055                         sendf(Client->Socket, "403 Root may not add\n");
1056                         return ;
1057                 }
1058         }
1059         #endif
1060
1061         #if HACK_NO_REFUNDS
1062         if( strstr(reason, "refund") != NULL || strstr(reason, "misdispense") != NULL )
1063         {
1064                 sendf(Client->Socket, "499 Don't use `dispense acct` for refunds, use `dispense refund` (and `dispense -G` to get item IDs)\n");
1065                 return ;
1066         }
1067         #endif
1068
1069         // Get recipient
1070         uid = Bank_GetAcctByName(user, 0);
1071         if( uid == -1 ) {
1072                 sendf(Client->Socket, "404 Invalid user\n");
1073                 return ;
1074         }
1075
1076         // You can't alter an internal account
1077         if( !(Bank_GetFlags(Client->UID) & USER_FLAG_ADMIN) )
1078         {
1079                 if( Bank_GetFlags(uid) & USER_FLAG_INTERNAL ) {
1080                         sendf(Client->Socket, "404 Invalid user\n");
1081                         return ;
1082                 }
1083                 // TODO: Maybe disallow changes to disabled?
1084         }
1085
1086         // Parse ammount
1087         iAmmount = atoi(ammount);
1088         if( iAmmount == 0 && ammount[0] != '0' ) {
1089                 sendf(Client->Socket, "407 Invalid Argument\n");
1090                 return ;
1091         }
1092
1093         // Do give
1094         switch( DispenseAdd(Client->UID, uid, iAmmount, reason) )
1095         {
1096         case 0:
1097                 sendf(Client->Socket, "200 Add OK\n");
1098                 return ;
1099         case 2:
1100                 sendf(Client->Socket, "402 Poor Guy\n");
1101                 return ;
1102         default:
1103                 sendf(Client->Socket, "500 Unknown error\n");
1104                 return ;
1105         }
1106 }
1107
1108 void Server_Cmd_SET(tClient *Client, char *Args)
1109 {
1110         char    *user, *ammount, *reason;
1111          int    uid, iAmmount;
1112
1113         // Parse arguments
1114         if( Server_int_ParseArgs(1, Args, &user, &ammount, &reason, NULL) ) {
1115                 sendf(Client->Socket, "407 SET takes 3 arguments\n");
1116                 return ;
1117         }
1118
1119         if( !Client->bIsAuthed ) {
1120                 sendf(Client->Socket, "401 Not Authenticated\n");
1121                 return ;
1122         }
1123
1124         // Check user permissions
1125         if( !(Bank_GetFlags(Client->UID) & USER_FLAG_ADMIN)  ) {
1126                 sendf(Client->Socket, "403 Not an admin\n");
1127                 return ;
1128         }
1129
1130         // Get recipient
1131         uid = Bank_GetAcctByName(user, 0);
1132         if( uid == -1 ) {
1133                 sendf(Client->Socket, "404 Invalid user\n");
1134                 return ;
1135         }
1136
1137         // Parse ammount
1138         iAmmount = atoi(ammount);
1139         if( iAmmount == 0 && ammount[0] != '0' ) {
1140                 sendf(Client->Socket, "407 Invalid Argument\n");
1141                 return ;
1142         }
1143
1144         // Do give
1145         switch( DispenseSet(Client->UID, uid, iAmmount, reason) )
1146         {
1147         case 0:
1148                 sendf(Client->Socket, "200 Add OK\n");
1149                 return ;
1150         case 2:
1151                 sendf(Client->Socket, "402 Poor Guy\n");
1152                 return ;
1153         default:
1154                 sendf(Client->Socket, "500 Unknown error\n");
1155                 return ;
1156         }
1157 }
1158
1159 void Server_Cmd_ENUMUSERS(tClient *Client, char *Args)
1160 {
1161          int    i, numRet = 0;
1162         tAcctIterator   *it;
1163          int    maxBal = INT_MAX, minBal = INT_MIN;
1164          int    flagMask = 0, flagVal = 0;
1165          int    sort = BANK_ITFLAG_SORT_NAME;
1166         time_t  lastSeenAfter=0, lastSeenBefore=0;
1167
1168          int    flags;  // Iterator flags
1169          int    balValue;       // Balance value for iterator
1170         time_t  timeValue;      // Time value for iterator
1171
1172         // Parse arguments
1173         if( Args && strlen(Args) )
1174         {
1175                 char    *space = Args, *type, *val;
1176                 do
1177                 {
1178                         type = space;
1179                         while(*type == ' ')     type ++;
1180                         // Get next space
1181                         space = strchr(space, ' ');
1182                         if(space)       *space = '\0';
1183
1184                         // Get type
1185                         val = strchr(type, ':');
1186                         if( val ) {
1187                                 *val = '\0';
1188                                 val ++;
1189
1190                                 // Types
1191                                 // - Minium Balance
1192                                 if( strcmp(type, "min_balance") == 0 ) {
1193                                         minBal = atoi(val);
1194                                 }
1195                                 // - Maximum Balance
1196                                 else if( strcmp(type, "max_balance") == 0 ) {
1197                                         maxBal = atoi(val);
1198                                 }
1199                                 // - Flags
1200                                 else if( strcmp(type, "flags") == 0 ) {
1201                                         if( Server_int_ParseFlags(Client, val, &flagMask, &flagVal) )
1202                                                 return ;
1203                                 }
1204                                 // - Last seen before timestamp
1205                                 else if( strcmp(type, "last_seen_before") == 0 ) {
1206                                         lastSeenAfter = atoll(val);
1207                                 }
1208                                 // - Last seen after timestamp
1209                                 else if( strcmp(type, "last_seen_after") == 0 ) {
1210                                         lastSeenAfter = atoll(val);
1211                                 }
1212                                 // - Sorting
1213                                 else if( strcmp(type, "sort") == 0 ) {
1214                                         char    *dash = strchr(val, '-');
1215                                         if( dash ) {
1216                                                 *dash = '\0';
1217                                                 dash ++;
1218                                         }
1219                                         if( strcmp(val, "name") == 0 ) {
1220                                                 sort = BANK_ITFLAG_SORT_NAME;
1221                                         }
1222                                         else if( strcmp(val, "balance") == 0 ) {
1223                                                 sort = BANK_ITFLAG_SORT_BAL;
1224                                         }
1225                                         else if( strcmp(val, "lastseen") == 0 ) {
1226                                                 sort = BANK_ITFLAG_SORT_LASTSEEN;
1227                                         }
1228                                         else {
1229                                                 sendf(Client->Socket, "407 Unknown sort field ('%s')\n", val);
1230                                                 return ;
1231                                         }
1232                                         // Handle sort direction
1233                                         if( dash ) {
1234                                                 if( strcmp(dash, "desc") == 0 ) {
1235                                                         sort |= BANK_ITFLAG_REVSORT;
1236                                                 }
1237                                                 else {
1238                                                         sendf(Client->Socket, "407 Unknown sort direction '%s'\n", dash);
1239                                                         return ;
1240                                                 }
1241                                                 dash[-1] = '-';
1242                                         }
1243                                 }
1244                                 else {
1245                                         sendf(Client->Socket, "407 Unknown argument to ENUM_USERS '%s:%s'\n", type, val);
1246                                         return ;
1247                                 }
1248
1249                                 val[-1] = ':';
1250                         }
1251                         else {
1252                                 sendf(Client->Socket, "407 Unknown argument to ENUM_USERS '%s'\n", type);
1253                                 return ;
1254                         }
1255
1256                         // Eat whitespace
1257                         if( space ) {
1258                                 *space = ' ';   // Repair (to be nice)
1259                                 space ++;
1260                                 while(*space == ' ')    space ++;
1261                         }
1262                 }       while(space);
1263         }
1264
1265         // Create iterator
1266         if( maxBal != INT_MAX ) {
1267                 flags = sort|BANK_ITFLAG_MAXBALANCE;
1268                 balValue = maxBal;
1269         }
1270         else if( minBal != INT_MIN ) {
1271                 flags = sort|BANK_ITFLAG_MINBALANCE;
1272                 balValue = minBal;
1273         }
1274         else {
1275                 flags = sort;
1276                 balValue = 0;
1277         }
1278         if( lastSeenBefore ) {
1279                 timeValue = lastSeenBefore;
1280                 flags |= BANK_ITFLAG_SEENBEFORE;
1281         }
1282         else if( lastSeenAfter ) {
1283                 timeValue = lastSeenAfter;
1284                 flags |= BANK_ITFLAG_SEENAFTER;
1285         }
1286         else {
1287                 timeValue = 0;
1288         }
1289         it = Bank_Iterator(flagMask, flagVal, flags, balValue, timeValue);
1290
1291         // Get return number
1292         while( (i = Bank_IteratorNext(it)) != -1 )
1293         {
1294                 int bal = Bank_GetBalance(i);
1295
1296                 if( bal == INT_MIN )    continue;
1297
1298                 if( bal < minBal )      continue;
1299                 if( bal > maxBal )      continue;
1300
1301                 numRet ++;
1302         }
1303
1304         Bank_DelIterator(it);
1305
1306         // Send count
1307         sendf(Client->Socket, "201 Users %i\n", numRet);
1308
1309
1310         // Create iterator
1311         it = Bank_Iterator(flagMask, flagVal, flags, balValue, timeValue);
1312
1313         while( (i = Bank_IteratorNext(it)) != -1 )
1314         {
1315                 int bal = Bank_GetBalance(i);
1316
1317                 if( bal == INT_MIN )    continue;
1318
1319                 if( bal < minBal )      continue;
1320                 if( bal > maxBal )      continue;
1321
1322                 _SendUserInfo(Client, i);
1323         }
1324
1325         Bank_DelIterator(it);
1326
1327         sendf(Client->Socket, "200 List End\n");
1328 }
1329
1330 void Server_Cmd_USERINFO(tClient *Client, char *Args)
1331 {
1332          int    uid;
1333         char    *user;
1334
1335         // Parse arguments
1336         if( Server_int_ParseArgs(0, Args, &user, NULL) ) {
1337                 sendf(Client->Socket, "407 USER_INFO takes 1 argument\n");
1338                 return ;
1339         }
1340
1341         if( giDebugLevel )      Debug(Client, "User Info '%s'", user);
1342
1343         // Get recipient
1344         uid = Bank_GetAcctByName(user, 0);
1345
1346         if( giDebugLevel >= 2 ) Debug(Client, "uid = %i", uid);
1347         if( uid == -1 ) {
1348                 sendf(Client->Socket, "404 Invalid user\n");
1349                 return ;
1350         }
1351
1352         _SendUserInfo(Client, uid);
1353 }
1354
1355 void _SendUserInfo(tClient *Client, int UserID)
1356 {
1357         char    *type, *disabled="", *door="";
1358          int    flags = Bank_GetFlags(UserID);
1359
1360         if( flags & USER_FLAG_INTERNAL ) {
1361                 type = "internal";
1362         }
1363         else if( flags & USER_FLAG_COKE ) {
1364                 if( flags & USER_FLAG_ADMIN )
1365                         type = "coke,admin";
1366                 else
1367                         type = "coke";
1368         }
1369         else if( flags & USER_FLAG_ADMIN ) {
1370                 type = "admin";
1371         }
1372         else {
1373                 type = "user";
1374         }
1375
1376         if( flags & USER_FLAG_DISABLED )
1377                 disabled = ",disabled";
1378         if( flags & USER_FLAG_DOORGROUP )
1379                 door = ",door";
1380
1381         // TODO: User flags/type
1382         sendf(
1383                 Client->Socket, "202 User %s %i %s%s%s\n",
1384                 Bank_GetAcctName(UserID), Bank_GetBalance(UserID),
1385                 type, disabled, door
1386                 );
1387 }
1388
1389 void Server_Cmd_USERADD(tClient *Client, char *Args)
1390 {
1391         char    *username;
1392
1393         // Parse arguments
1394         if( Server_int_ParseArgs(0, Args, &username, NULL) ) {
1395                 sendf(Client->Socket, "407 USER_ADD takes 1 argument\n");
1396                 return ;
1397         }
1398
1399         // Check authentication
1400         if( !Client->bIsAuthed ) {
1401                 sendf(Client->Socket, "401 Not Authenticated\n");
1402                 return ;
1403         }
1404
1405         // Check permissions
1406         if( !(Bank_GetFlags(Client->UID) & USER_FLAG_ADMIN) ) {
1407                 sendf(Client->Socket, "403 Not a coke admin\n");
1408                 return ;
1409         }
1410
1411         // Try to create user
1412         if( Bank_CreateAcct(username) == -1 ) {
1413                 sendf(Client->Socket, "404 User exists\n");
1414                 return ;
1415         }
1416
1417         {
1418                 char    *thisName = Bank_GetAcctName(Client->UID);
1419                 Log_Info("Account '%s' created by '%s'", username, thisName);
1420                 free(thisName);
1421         }
1422
1423         sendf(Client->Socket, "200 User Added\n");
1424 }
1425
1426 void Server_Cmd_USERFLAGS(tClient *Client, char *Args)
1427 {
1428         char    *username, *flags, *reason=NULL;
1429          int    mask=0, value=0;
1430          int    uid;
1431
1432         // Parse arguments
1433         if( Server_int_ParseArgs(1, Args, &username, &flags, &reason, NULL) ) {
1434                 if( !flags ) {
1435                         sendf(Client->Socket, "407 USER_FLAGS takes at least 2 arguments\n");
1436                         return ;
1437                 }
1438                 reason = "";
1439         }
1440
1441         // Check authentication
1442         if( !Client->bIsAuthed ) {
1443                 sendf(Client->Socket, "401 Not Authenticated\n");
1444                 return ;
1445         }
1446
1447         // Check permissions
1448         if( !(Bank_GetFlags(Client->UID) & USER_FLAG_ADMIN) ) {
1449                 sendf(Client->Socket, "403 Not a coke admin\n");
1450                 return ;
1451         }
1452
1453         // Get UID
1454         uid = Bank_GetAcctByName(username, 0);
1455         if( uid == -1 ) {
1456                 sendf(Client->Socket, "404 User '%s' not found\n", username);
1457                 return ;
1458         }
1459
1460         // Parse flags
1461         if( Server_int_ParseFlags(Client, flags, &mask, &value) )
1462                 return ;
1463
1464         if( giDebugLevel )
1465                 Debug(Client, "Set %i(%s) flags to %x (masked %x)\n",
1466                         uid, username, mask, value);
1467
1468         // Apply flags
1469         Bank_SetFlags(uid, mask, value);
1470
1471         // Log the change
1472         Log_Info("Updated '%s' with flag set '%s' by '%s' - Reason: %s",
1473                 username, flags, Client->Username, reason);
1474
1475         // Return OK
1476         sendf(Client->Socket, "200 User Updated\n");
1477 }
1478
1479 void Server_Cmd_UPDATEITEM(tClient *Client, char *Args)
1480 {
1481         char    *itemname, *price_str, *description;
1482          int    price;
1483         tItem   *item;
1484
1485         if( Server_int_ParseArgs(1, Args, &itemname, &price_str, &description, NULL) ) {
1486                 sendf(Client->Socket, "407 UPDATE_ITEM takes 3 arguments\n");
1487                 return ;
1488         }
1489
1490         if( !Client->bIsAuthed ) {
1491                 sendf(Client->Socket, "401 Not Authenticated\n");
1492                 return ;
1493         }
1494
1495         // Check user permissions
1496         if( !(Bank_GetFlags(Client->UID) & (USER_FLAG_COKE|USER_FLAG_ADMIN))  ) {
1497                 sendf(Client->Socket, "403 Not in coke\n");
1498                 return ;
1499         }
1500
1501         item = _GetItemFromString(itemname);
1502         if( !item ) {
1503                 // TODO: Create item?
1504                 sendf(Client->Socket, "406 Bad Item ID\n");
1505                 return ;
1506         }
1507
1508         price = atoi(price_str);
1509         if( price <= 0 && price_str[0] != '0' ) {
1510                 sendf(Client->Socket, "407 Invalid price set\n");
1511         }
1512
1513         switch( DispenseUpdateItem( Client->UID, item, description, price ) )
1514         {
1515         case 0:
1516                 // Return OK
1517                 sendf(Client->Socket, "200 Item updated\n");
1518                 break;
1519         default:
1520                 break;
1521         }
1522 }
1523
1524 // --- INTERNAL HELPERS ---
1525 void Debug(tClient *Client, const char *Format, ...)
1526 {
1527         va_list args;
1528         //printf("%010i [%i] ", (int)time(NULL), Client->ID);
1529         printf("[%i] ", Client->ID);
1530         va_start(args, Format);
1531         vprintf(Format, args);
1532         va_end(args);
1533         printf("\n");
1534 }
1535
1536 int sendf(int Socket, const char *Format, ...)
1537 {
1538         va_list args;
1539          int    len;
1540
1541         va_start(args, Format);
1542         len = vsnprintf(NULL, 0, Format, args);
1543         va_end(args);
1544
1545         {
1546                 char    buf[len+1];
1547                 va_start(args, Format);
1548                 vsnprintf(buf, len+1, Format, args);
1549                 va_end(args);
1550
1551                 #if DEBUG_TRACE_CLIENT
1552                 printf("sendf: %s", buf);
1553                 #endif
1554
1555                 return send(Socket, buf, len, 0);
1556         }
1557 }
1558
1559 // Takes a series of char *'s in
1560 /**
1561  * \brief Parse space-separated entries into
1562  */
1563 int Server_int_ParseArgs(int bUseLongLast, char *ArgStr, ...)
1564 {
1565         va_list args;
1566         char    savedChar;
1567         char    **dest;
1568         va_start(args, ArgStr);
1569
1570         // Check for null
1571         if( !ArgStr )
1572         {
1573                 while( (dest = va_arg(args, char **)) )
1574                         *dest = NULL;
1575                 va_end(args);
1576                 return 1;
1577         }
1578
1579         savedChar = *ArgStr;
1580
1581         while( (dest = va_arg(args, char **)) )
1582         {
1583                 // Trim leading spaces
1584                 while( *ArgStr == ' ' || *ArgStr == '\t' )
1585                         ArgStr ++;
1586
1587                 // ... oops, not enough arguments
1588                 if( *ArgStr == '\0' )
1589                 {
1590                         // NULL unset arguments
1591                         do {
1592                                 *dest = NULL;
1593                         }       while( (dest = va_arg(args, char **)) );
1594                 va_end(args);
1595                         return -1;
1596                 }
1597
1598                 if( *ArgStr == '"' )
1599                 {
1600                         ArgStr ++;
1601                         *dest = ArgStr;
1602                         // Read until quote
1603                         while( *ArgStr && *ArgStr != '"' )
1604                                 ArgStr ++;
1605                 }
1606                 else
1607                 {
1608                         // Set destination
1609                         *dest = ArgStr;
1610                         // Read until a space
1611                         while( *ArgStr && *ArgStr != ' ' && *ArgStr != '\t' )
1612                                 ArgStr ++;
1613                 }
1614                 savedChar = *ArgStr;    // savedChar is used to un-mangle the last string
1615                 *ArgStr = '\0';
1616                 ArgStr ++;
1617         }
1618         va_end(args);
1619
1620         // Oops, extra arguments, and greedy not set
1621         if( (savedChar == ' ' || savedChar == '\t') && !bUseLongLast ) {
1622                 return -1;
1623         }
1624
1625         // Un-mangle last
1626         if(bUseLongLast) {
1627                 ArgStr --;
1628                 *ArgStr = savedChar;
1629         }
1630
1631         return 0;       // Success!
1632 }
1633
1634 int Server_int_ParseFlags(tClient *Client, const char *Str, int *Mask, int *Value)
1635 {
1636         struct {
1637                 const char      *Name;
1638                  int    Mask;
1639                  int    Value;
1640         }       cFLAGS[] = {
1641                  {"disabled", USER_FLAG_DISABLED, USER_FLAG_DISABLED}
1642                 ,{"door", USER_FLAG_DOORGROUP, USER_FLAG_DOORGROUP}
1643                 ,{"coke", USER_FLAG_COKE, USER_FLAG_COKE}
1644                 ,{"admin", USER_FLAG_ADMIN, USER_FLAG_ADMIN}
1645                 ,{"internal", USER_FLAG_INTERNAL, USER_FLAG_INTERNAL}
1646         };
1647         const int       ciNumFlags = sizeof(cFLAGS)/sizeof(cFLAGS[0]);
1648
1649         char    *space;
1650
1651         *Mask = 0;
1652         *Value = 0;
1653
1654         do {
1655                  int    bRemove = 0;
1656                  int    i;
1657                  int    len;
1658
1659                 while( *Str == ' ' )    Str ++; // Eat whitespace
1660                 space = strchr(Str, ',');       // Find the end of the flag
1661                 if(space)
1662                         len = space - Str;
1663                 else
1664                         len = strlen(Str);
1665
1666                 // Check for inversion/removal
1667                 if( *Str == '!' || *Str == '-' ) {
1668                         bRemove = 1;
1669                         Str ++;
1670                 }
1671                 else if( *Str == '+' ) {
1672                         Str ++;
1673                 }
1674
1675                 // Check flag values
1676                 for( i = 0; i < ciNumFlags; i ++ )
1677                 {
1678                         if( strncmp(Str, cFLAGS[i].Name, len) == 0 ) {
1679                                 *Mask |= cFLAGS[i].Mask;
1680                                 *Value &= ~cFLAGS[i].Mask;
1681                                 if( !bRemove )
1682                                         *Value |= cFLAGS[i].Value;
1683                                 break;
1684                         }
1685                 }
1686
1687                 // Error check
1688                 if( i == ciNumFlags ) {
1689                         char    val[len+1];
1690                         strncpy(val, Str, len+1);
1691                         sendf(Client->Socket, "407 Unknown flag value '%s'\n", val);
1692                         return -1;
1693                 }
1694
1695                 Str = space + 1;
1696         } while(space);
1697
1698         return 0;
1699 }