Removing explicit mentions to users in the cokebank
[tpg/opendispense2.git] / src / server / server.c
index b072652..c997c43 100644 (file)
 #include <limits.h>
 #include <stdarg.h>
 
-// HACKS
-#define HACK_TPG_NOAUTH        1
-#define HACK_ROOT_NOAUTH       1
-
 #define        DEBUG_TRACE_CLIENT      0
 
 // Statistics
@@ -45,6 +41,7 @@ typedef struct sClient
        char    Salt[9];
        
         int    UID;
+        int    EffectiveUID;
         int    bIsAuthed;
 }      tClient;
 
@@ -57,6 +54,7 @@ void  Server_ParseClientCommand(tClient *Client, char *CommandString);
 void   Server_Cmd_USER(tClient *Client, char *Args);
 void   Server_Cmd_PASS(tClient *Client, char *Args);
 void   Server_Cmd_AUTOAUTH(tClient *Client, char *Args);
+void   Server_Cmd_SETEUSER(tClient *Client, char *Args);
 void   Server_Cmd_ENUMITEMS(tClient *Client, char *Args);
 void   Server_Cmd_ITEMINFO(tClient *Client, char *Args);
 void   Server_Cmd_DISPENSE(tClient *Client, char *Args);
@@ -65,31 +63,36 @@ void        Server_Cmd_ADD(tClient *Client, char *Args);
 void   Server_Cmd_ENUMUSERS(tClient *Client, char *Args);
 void   Server_Cmd_USERINFO(tClient *Client, char *Args);
 void   _SendUserInfo(tClient *Client, int UserID);
+void   Server_Cmd_USERADD(tClient *Client, char *Args);
+void   Server_Cmd_USERFLAGS(tClient *Client, char *Args);
 // --- Helpers ---
  int   sendf(int Socket, const char *Format, ...);
- int   GetUserAuth(const char *Salt, const char *Username, const uint8_t *Hash);
-void   HexBin(uint8_t *Dest, char *Src, int BufSize);
 
-// === GLOBALS ===
- int   giServer_Port = 1020;
- int   giServer_NextClientID = 1;
+// === CONSTANTS ===
 // - Commands
-struct sClientCommand {
-       char    *Name;
+const struct sClientCommand {
+       const char      *Name;
        void    (*Function)(tClient *Client, char *Arguments);
 }      gaServer_Commands[] = {
        {"USER", Server_Cmd_USER},
        {"PASS", Server_Cmd_PASS},
        {"AUTOAUTH", Server_Cmd_AUTOAUTH},
+       {"SETEUSER", Server_Cmd_SETEUSER},
        {"ENUM_ITEMS", Server_Cmd_ENUMITEMS},
        {"ITEM_INFO", Server_Cmd_ITEMINFO},
        {"DISPENSE", Server_Cmd_DISPENSE},
        {"GIVE", Server_Cmd_GIVE},
        {"ADD", Server_Cmd_ADD},
        {"ENUM_USERS", Server_Cmd_ENUMUSERS},
-       {"USER_INFO", Server_Cmd_USERINFO}
+       {"USER_INFO", Server_Cmd_USERINFO},
+       {"USER_ADD", Server_Cmd_USERADD},
+       {"USER_FLAGS", Server_Cmd_USERFLAGS}
 };
-#define NUM_COMMANDS   (sizeof(gaServer_Commands)/sizeof(gaServer_Commands[0]))
+#define NUM_COMMANDS   ((int)(sizeof(gaServer_Commands)/sizeof(gaServer_Commands[0])))
+
+// === GLOBALS ===
+ int   giServer_Port = 1020;
+ int   giServer_NextClientID = 1;
  int   giServer_Socket;
 
 // === CODE ===
@@ -191,7 +194,9 @@ void Server_HandleClient(int Socket, int bTrusted)
        char    *buf = inbuf;
         int    remspace = INPUT_BUFFER_SIZE-1;
         int    bytes = -1;
-       tClient clientInfo = {0};
+       tClient clientInfo;
+       
+       memset(&clientInfo, 0, sizeof(clientInfo));
        
        // Initialise Client info
        clientInfo.Socket = Socket;
@@ -261,6 +266,10 @@ void Server_ParseClientCommand(tClient *Client, char *CommandString)
 {
        char    *space, *args;
         int    i;
+       #if 0
+       char    **argList;
+        int    numArgs = 0;
+       #endif
        
        // Split at first space
        space = strchr(CommandString, ' ');
@@ -270,8 +279,28 @@ void Server_ParseClientCommand(tClient *Client, char *CommandString)
        else {
                *space = '\0';
                args = space + 1;
+               while( *space == ' ' )  space ++;
+               
+               #if 0
+               // Count arguments
+               numArgs = 1;
+               for( i = 0; args[i]; )
+               {
+                       while( CommandString[i] != ' ' ) {
+                               if( CommandString[i] == '"' ) {
+                                       while( !(CommandString[i] != '\\' CommandString[i+1] == '"' ) )
+                                               i ++;
+                                       i ++;
+                               }
+                               i ++;
+                       }
+                       numArgs ++;
+                       while( CommandString[i] == ' ' )        i ++;
+               }
+               #endif
        }
        
+       
        // Find command
        for( i = 0; i < NUM_COMMANDS; i++ )
        {
@@ -293,7 +322,10 @@ void Server_ParseClientCommand(tClient *Client, char *CommandString)
  * Usage: USER <username>
  */
 void Server_Cmd_USER(tClient *Client, char *Args)
-{      
+{
+       char    *space = strchr(Args, ' ');
+       if(space)       *space = '\0';  // Remove characters after the ' '
+       
        // Debug!
        if( giDebugLevel )
                printf("Client %i authenticating as '%s'\n", Client->ID, Args);
@@ -329,28 +361,17 @@ void Server_Cmd_USER(tClient *Client, char *Args)
  */
 void Server_Cmd_PASS(tClient *Client, char *Args)
 {
-       uint8_t clienthash[HASH_LENGTH] = {0};
-       
-       // Read user's hash
-       HexBin(clienthash, Args, HASH_LENGTH);
-       
-       // TODO: Decrypt password passed
+       char    *space = strchr(Args, ' ');
+       if(space)       *space = '\0';  // Remove characters after the ' '
        
-       Client->UID = GetUserAuth(Client->Salt, Client->Username, clienthash);
+       // Pass on to cokebank
+       Client->UID = Bank_GetUserAuth(Client->Salt, Client->Username, Args);
 
        if( Client->UID != -1 ) {
                Client->bIsAuthed = 1;
                sendf(Client->Socket, "200 Auth OK\n");
                return ;
        }
-
-       if( giDebugLevel ) {
-                int    i;
-               printf("Client %i: Password hash ", Client->ID);
-               for(i=0;i<HASH_LENGTH;i++)
-                       printf("%02x", clienthash[i]&0xFF);
-               printf("\n");
-       }
        
        sendf(Client->Socket, "401 Auth Failure\n");
 }
@@ -362,8 +383,8 @@ void Server_Cmd_PASS(tClient *Client, char *Args)
  */
 void Server_Cmd_AUTOAUTH(tClient *Client, char *Args)
 {
-       char    *spos = strchr(Args, ' ');
-       if(spos)        *spos = '\0';   // Remove characters after the ' '
+       char    *space = strchr(Args, ' ');
+       if(space)       *space = '\0';  // Remove characters after the ' '
        
        // Check if trusted
        if( !Client->bIsTrusted ) {
@@ -374,7 +395,7 @@ void Server_Cmd_AUTOAUTH(tClient *Client, char *Args)
        }
        
        // Get UID
-       Client->UID = GetUserID( Args );
+       Client->UID = Bank_GetAcctByName( Args );       
        if( Client->UID < 0 ) {
                if(giDebugLevel)
                        printf("Client %i: Unknown user '%s'\n", Client->ID, Args);
@@ -382,12 +403,58 @@ void Server_Cmd_AUTOAUTH(tClient *Client, char *Args)
                return ;
        }
        
+       // You can't be an internal account
+       if( Bank_GetFlags(Client->UID) & USER_FLAG_INTERNAL ) {
+               Client->UID = -1;
+               sendf(Client->Socket, "401 Auth Failure\n");
+               return ;
+       }
+       
        if(giDebugLevel)
                printf("Client %i: Authenticated as '%s' (%i)\n", Client->ID, Args, Client->UID);
        
        sendf(Client->Socket, "200 Auth OK\n");
 }
 
+/**
+ * \brief Set effective user
+ */
+void Server_Cmd_SETEUSER(tClient *Client, char *Args)
+{
+       char    *space;
+       
+       space = strchr(Args, ' ');
+       
+       if(space)       *space = '\0';
+       
+       if( !strlen(Args) ) {
+               sendf(Client->Socket, "407 SETEUSER expects an argument\n");
+               return ;
+       }
+
+       // Check user permissions
+       if( !(Bank_GetFlags(Client->UID) & USER_FLAG_COKE) ) {
+               sendf(Client->Socket, "403 Not in coke\n");
+               return ;
+       }
+       
+       // Set id
+       Client->EffectiveUID = Bank_GetAcctByName(Args);
+       if( Client->EffectiveUID == -1 ) {
+               sendf(Client->Socket, "404 User not found\n");
+               return ;
+       }
+       
+       // You can't be an internal account
+       if( Bank_GetFlags(Client->EffectiveUID) & USER_FLAG_INTERNAL ) {
+               Client->EffectiveUID = -1;
+               sendf(Client->Socket, "404 User not found\n");
+               return ;
+       }
+       
+       sendf(Client->Socket, "200 User set\n");
+}
+
 /**
  * \brief Enumerate the items that the server knows about
  */
@@ -395,13 +462,21 @@ void Server_Cmd_ENUMITEMS(tClient *Client, char *Args)
 {
         int    i;
 
-       sendf(Client->Socket, "201 Items %i", giNumItems);
+       if( Args != NULL && strlen(Args) ) {
+               sendf(Client->Socket, "407 ENUM_ITEMS takes no arguments\n");
+               return ;
+       }
+
+       sendf(Client->Socket, "201 Items %i\n", giNumItems);
 
        for( i = 0; i < giNumItems; i ++ ) {
-               sendf(Client->Socket, " %s:%i", gaItems[i].Handler->Name, gaItems[i].ID);
+               sendf(Client->Socket,
+                       "202 Item %s:%i %i %s\n",
+                        gaItems[i].Handler->Name, gaItems[i].ID, gaItems[i].Price, gaItems[i].Name
+                        );
        }
 
-       sendf(Client->Socket, "\n");
+       sendf(Client->Socket, "200 List end\n");
 }
 
 tItem *_GetItemFromString(char *String)
@@ -463,6 +538,8 @@ void Server_Cmd_DISPENSE(tClient *Client, char *Args)
 {
        tItem   *item;
         int    ret;
+        int    uid;
+        
        if( !Client->bIsAuthed ) {
                sendf(Client->Socket, "401 Not Authenticated\n");
                return ;
@@ -473,8 +550,15 @@ void Server_Cmd_DISPENSE(tClient *Client, char *Args)
                sendf(Client->Socket, "406 Bad Item ID\n");
                return ;
        }
+       
+       if( Client->EffectiveUID != -1 ) {
+               uid = Client->EffectiveUID;
+       }
+       else {
+               uid = Client->UID;
+       }
 
-       switch( ret = DispenseItem( Client->UID, item ) )
+       switch( ret = DispenseItem( Client->UID, uid, item ) )
        {
        case 0: sendf(Client->Socket, "200 Dispense OK\n");     return ;
        case 1: sendf(Client->Socket, "501 Unable to dispense\n");      return ;
@@ -489,6 +573,7 @@ void Server_Cmd_GIVE(tClient *Client, char *Args)
 {
        char    *recipient, *ammount, *reason;
         int    uid, iAmmount;
+        int    thisUid;
        
        if( !Client->bIsAuthed ) {
                sendf(Client->Socket, "401 Not Authenticated\n");
@@ -514,9 +599,15 @@ void Server_Cmd_GIVE(tClient *Client, char *Args)
        reason ++;
 
        // Get recipient
-       uid = GetUserID(recipient);
+       uid = Bank_GetAcctByName(recipient);
        if( uid == -1 ) {
-               sendf(Client->Socket, "404 Invalid target user");
+               sendf(Client->Socket, "404 Invalid target user\n");
+               return ;
+       }
+       
+       // You can't alter an internal account
+       if( Bank_GetFlags(uid) & USER_FLAG_INTERNAL ) {
+               sendf(Client->Socket, "404 Invalid target user\n");
                return ;
        }
 
@@ -526,9 +617,16 @@ void Server_Cmd_GIVE(tClient *Client, char *Args)
                sendf(Client->Socket, "407 Invalid Argument, ammount must be > zero\n");
                return ;
        }
+       
+       if( Client->EffectiveUID != -1 ) {
+               thisUid = Client->EffectiveUID;
+       }
+       else {
+               thisUid = Client->UID;
+       }
 
        // Do give
-       switch( DispenseGive(Client->UID, uid, iAmmount, reason) )
+       switch( DispenseGive(Client->UID, thisUid, uid, iAmmount, reason) )
        {
        case 0:
                sendf(Client->Socket, "200 Give OK\n");
@@ -570,12 +668,22 @@ void Server_Cmd_ADD(tClient *Client, char *Args)
        *reason = '\0';
        reason ++;
 
-       // TODO: Check if the current user is in coke/higher
+       // Check user permissions
+       if( !(Bank_GetFlags(Client->UID) & USER_FLAG_COKE)  ) {
+               sendf(Client->Socket, "403 Not in coke\n");
+               return ;
+       }
 
        // Get recipient
-       uid = GetUserID(user);
+       uid = Bank_GetAcctByName(user);
        if( uid == -1 ) {
-               sendf(Client->Socket, "404 Invalid user");
+               sendf(Client->Socket, "404 Invalid user\n");
+               return ;
+       }
+       
+       // You can't alter an internal account
+       if( Bank_GetFlags(uid) & USER_FLAG_INTERNAL ) {
+               sendf(Client->Socket, "404 Invalid user\n");
                return ;
        }
 
@@ -605,15 +713,40 @@ void Server_Cmd_ENUMUSERS(tClient *Client, char *Args)
 {
         int    i, numRet = 0;
         int    maxBal = INT_MAX, minBal = INT_MIN;
-        int    numUsr = GetMaxID();
+       tAcctIterator   *it;
+        int    sort = BANK_ITFLAG_SORT_NAME;
        
        // Parse arguments
-       //minBal = atoi(Args);
+       if( Args && strlen(Args) )
+       {
+               char    *min = Args, *max;
+               
+               max = strchr(Args, ' ');
+               if( max ) {
+                       *max = '\0';
+                       max ++;
+               }
+               
+               // If <minBal> != "-"
+               if( strcmp(min, "-") != 0 )
+                       minBal = atoi(min);
+               // If <maxBal> != "-"
+               if( max && strcmp(max, "-") != 0 )
+                       maxBal = atoi(max);
+       }
+       
+       // Create iterator
+       if( maxBal != INT_MAX )
+               it = Bank_Iterator(0, 0, sort|BANK_ITFLAG_MAXBALANCE, maxBal, 0);
+       else if( minBal != INT_MIN )
+               it = Bank_Iterator(0, 0, sort|BANK_ITFLAG_MINBALANCE, minBal, 0);
+       else
+               it = Bank_Iterator(0, 0, sort, 0, 0);
        
        // Get return number
-       for( i = 0; i < numUsr; i ++ )
+       while( (i = Bank_IteratorNext(it)) != -1 )
        {
-               int bal = GetBalance(i);
+               int bal = Bank_GetBalance(i);
                
                if( bal == INT_MIN )    continue;
                
@@ -623,22 +756,34 @@ void Server_Cmd_ENUMUSERS(tClient *Client, char *Args)
                numRet ++;
        }
        
+       Bank_DelIterator(it);
+       
        // Send count
        sendf(Client->Socket, "201 Users %i\n", numRet);
        
-       for( i = 0; i < numUsr; i ++ )
+       
+       // Create iterator
+       if( maxBal != INT_MAX )
+               it = Bank_Iterator(0, 0, sort|BANK_ITFLAG_MAXBALANCE, maxBal, 0);
+       else if( minBal != INT_MIN )
+               it = Bank_Iterator(0, 0, sort|BANK_ITFLAG_MINBALANCE, minBal, 0);
+       else
+               it = Bank_Iterator(0, 0, sort, 0, 0);
+       
+       while( (i = Bank_IteratorNext(it)) != -1 )
        {
-               int bal = GetBalance(i);
+               int bal = Bank_GetBalance(i);
                
                if( bal == INT_MIN )    continue;
                
                if( bal < minBal )      continue;
                if( bal > maxBal )      continue;
                
-               // TODO: User flags
                _SendUserInfo(Client, i);
        }
        
+       Bank_DelIterator(it);
+       
        sendf(Client->Socket, "200 List End\n");
 }
 
@@ -652,7 +797,7 @@ void Server_Cmd_USERINFO(tClient *Client, char *Args)
        if(space)       *space = '\0';
        
        // Get recipient
-       uid = GetUserID(user);
+       uid = Bank_GetAcctByName(user);
        if( uid == -1 ) {
                sendf(Client->Socket, "404 Invalid user");
                return ;
@@ -663,68 +808,155 @@ void Server_Cmd_USERINFO(tClient *Client, char *Args)
 
 void _SendUserInfo(tClient *Client, int UserID)
 {
-       char    *type, *disabled="";
-        int    flags = GetFlags(UserID);
+       char    *type, *disabled="", *door="";
+        int    flags = Bank_GetFlags(UserID);
        
-       switch( flags & USER_FLAG_TYPEMASK )
-       {
-       default:
-       case USER_TYPE_NORMAL:  type = "user";  break;
-       case USER_TYPE_COKE:    type = "coke";  break;
-       case USER_TYPE_WHEEL:   type = "wheel"; break;
-       case USER_TYPE_GOD:     type = "meta";  break;
+       if( flags & USER_FLAG_INTERNAL ) {
+               type = "internal";
+       }
+       else if( flags & USER_FLAG_COKE ) {
+               if( flags & USER_FLAG_WHEEL )
+                       type = "coke,wheel";
+               else
+                       type = "coke";
+       }
+       else if( flags & USER_FLAG_WHEEL ) {
+               type = "wheel";
+       }
+       else {
+               type = "user";
        }
        
        if( flags & USER_FLAG_DISABLED )
                disabled = ",disabled";
+       if( flags & USER_FLAG_DOORGROUP )
+               door = ",door";
        
        // TODO: User flags/type
        sendf(
                Client->Socket, "202 User %s %i %s%s\n",
-               GetUserName(UserID), GetBalance(UserID),
+               Bank_GetAcctName(UserID), Bank_GetBalance(UserID),
                type, disabled
                );
 }
 
-/**
- * \brief Authenticate a user
- * \return User ID, or -1 if authentication failed
- */
-int GetUserAuth(const char *Salt, const char *Username, const uint8_t *ProvidedHash)
+void Server_Cmd_USERADD(tClient *Client, char *Args)
 {
-       #if 0
-       uint8_t h[20];
-        int    ofs = strlen(Username) + strlen(Salt);
-       char    input[ ofs + 40 + 1];
-       char    tmp[4 + strlen(Username) + 1];  // uid=%s
-       #endif
+       char    *username, *space;
        
-       #if HACK_TPG_NOAUTH
-       if( strcmp(Username, "tpg") == 0 )
-               return GetUserID("tpg");
-       #endif
-       #if HACK_ROOT_NOAUTH
-       if( strcmp(Username, "root") == 0 )
-               return GetUserID("root");
-       #endif
+       // Check permissions
+       if( !(Bank_GetFlags(Client->UID) & USER_FLAG_WHEEL) ) {
+               sendf(Client->Socket, "403 Not Wheel\n");
+               return ;
+       }
        
-       #if 0
-       //
-       strcpy(input, Username);
-       strcpy(input, Salt);
-       // TODO: Get user's SHA-1 hash
-       sprintf(tmp, "uid=%s", Username);
-       ldap_search_s(ld, "", LDAP_SCOPE_BASE, tmp, "userPassword", 0, res);
-       
-       sprintf(input+ofs, "%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x",
-               h[ 0], h[ 1], h[ 2], h[ 3], h[ 4], h[ 5], h[ 6], h[ 7], h[ 8], h[ 9],
-               h[10], h[11], h[12], h[13], h[14], h[15], h[16], h[17], h[18], h[19]
-               );
-       // Then create the hash from the provided salt
-       // Compare that with the provided hash
-       #endif
+       // Read arguments
+       username = Args;
+       while( *username == ' ' )       username ++;
+       space = strchr(username, ' ');
+       if(space)       *space = '\0';
+       
+       // Try to create user
+       if( Bank_CreateAcct(username) == -1 ) {
+               sendf(Client->Socket, "404 User exists\n");
+               return ;
+       }
+       
+       sendf(Client->Socket, "200 User Added\n");
+}
+
+void Server_Cmd_USERFLAGS(tClient *Client, char *Args)
+{
+       char    *username, *flags;
+       char    *space;
+        int    mask=0, value=0;
+        int    uid;
+       
+       // Check permissions
+       if( !(Bank_GetFlags(Client->UID) & USER_FLAG_WHEEL) ) {
+               sendf(Client->Socket, "403 Not Wheel\n");
+               return ;
+       }
+       
+       // Read arguments
+       // - Username
+       username = Args;
+       while( *username == ' ' )       username ++;
+       space = strchr(username, ' ');
+       if(!space) {
+               sendf(Client->Socket, "407 USER_FLAGS requires 2 arguments, 1 given\n");
+               return ;
+       }
+       *space = '\0';
+       // - Flags
+       flags = space + 1;
+       while( *flags == ' ' )  flags ++;
+       space = strchr(flags, ' ');
+       if(space)       *space = '\0';
+       
+       // Get UID
+       uid = Bank_GetAcctByName(username);
+       if( uid == -1 ) {
+               sendf(Client->Socket, "404 User '%s' not found\n", username);
+               return ;
+       }
+       
+       // Parse flags
+       do {
+                int    bRemove = 0;
+                int    i;
+               struct {
+                       const char      *Name;
+                        int    Mask;
+                        int    Value;
+               }       cFLAGS[] = {
+                        {"disabled", USER_FLAG_DISABLED, USER_FLAG_DISABLED}
+                       ,{"door", USER_FLAG_DOORGROUP, USER_FLAG_DOORGROUP}
+                       ,{"coke", USER_FLAG_COKE, USER_FLAG_COKE}
+                       ,{"wheel", USER_FLAG_WHEEL, USER_FLAG_WHEEL}
+               //      ,{"internal", USER_FLAG_INTERNAL, USER_FLAG_INTERNAL}
+               };
+               const int       ciNumFlags = sizeof(cFLAGS)/sizeof(cFLAGS[0]);
+               
+               while( *flags == ' ' )  flags ++;       // Eat whitespace
+               space = strchr(flags, ',');     // Find the end of the flag
+               if(space)       *space = '\0';
+               
+               // Check for inversion/removal
+               if( *flags == '!' || *flags == '-' ) {
+                       bRemove = 1;
+                       flags ++;
+               }
+               else if( *flags == '+' ) {
+                       flags ++;
+               }
+               
+               // Check flag values
+               for( i = 0; i < ciNumFlags; i ++ )
+               {
+                       if( strcmp(flags, cFLAGS[i].Name) == 0 ) {
+                               mask |= cFLAGS[i].Mask;
+                               value &= ~cFLAGS[i].Mask;
+                               if( !bRemove )
+                                       value |= cFLAGS[i].Value;
+                               break;
+                       }
+               }
+               
+               // Error check
+               if( i == ciNumFlags ) {
+                       sendf(Client->Socket, "407 Unknown flag value '%s'\n", flags);
+                       return ;
+               }
+               
+               flags = space + 1;
+       } while(space);
+       
+       // Apply flags
+       Bank_SetFlags(uid, mask, value);
        
-       return -1;
+       // Return OK
+       sendf(Client->Socket, "200 User Updated\n");
 }
 
 // --- INTERNAL HELPERS ---
@@ -750,80 +982,3 @@ int sendf(int Socket, const char *Format, ...)
                return send(Socket, buf, len, 0);
        }
 }
-
-// TODO: Move to another file
-void HexBin(uint8_t *Dest, char *Src, int BufSize)
-{
-        int    i;
-       for( i = 0; i < BufSize; i ++ )
-       {
-               uint8_t val = 0;
-               
-               if('0' <= *Src && *Src <= '9')
-                       val |= (*Src-'0') << 4;
-               else if('A' <= *Src && *Src <= 'F')
-                       val |= (*Src-'A'+10) << 4;
-               else if('a' <= *Src && *Src <= 'f')
-                       val |= (*Src-'a'+10) << 4;
-               else
-                       break;
-               Src ++;
-               
-               if('0' <= *Src && *Src <= '9')
-                       val |= (*Src-'0');
-               else if('A' <= *Src && *Src <= 'F')
-                       val |= (*Src-'A'+10);
-               else if('a' <= *Src && *Src <= 'f')
-                       val |= (*Src-'a'+10);
-               else
-                       break;
-               Src ++;
-               
-               Dest[i] = val;
-       }
-       for( ; i < BufSize; i++ )
-               Dest[i] = 0;
-}
-
-/**
- * \brief Decode a Base64 value
- */
-int UnBase64(uint8_t *Dest, char *Src, int BufSize)
-{
-       uint32_t        val;
-        int    i, j;
-       char    *start_src = Src;
-       
-       for( i = 0; i+2 < BufSize; i += 3 )
-       {
-               val = 0;
-               for( j = 0; j < 4; j++, Src ++ ) {
-                       if('A' <= *Src && *Src <= 'Z')
-                               val |= (*Src - 'A') << ((3-j)*6);
-                       else if('a' <= *Src && *Src <= 'z')
-                               val |= (*Src - 'a' + 26) << ((3-j)*6);
-                       else if('0' <= *Src && *Src <= '9')
-                               val |= (*Src - '0' + 52) << ((3-j)*6);
-                       else if(*Src == '+')
-                               val |= 62 << ((3-j)*6);
-                       else if(*Src == '/')
-                               val |= 63 << ((3-j)*6);
-                       else if(!*Src)
-                               break;
-                       else if(*Src != '=')
-                               j --;   // Ignore invalid characters
-               }
-               Dest[i  ] = (val >> 16) & 0xFF;
-               Dest[i+1] = (val >> 8) & 0xFF;
-               Dest[i+2] = val & 0xFF;
-               if(j != 4)      break;
-       }
-       
-       // Finish things off
-       if(i   < BufSize)
-               Dest[i] = (val >> 16) & 0xFF;
-       if(i+1 < BufSize)
-               Dest[i+1] = (val >> 8) & 0xFF;
-       
-       return Src - start_src;
-}

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