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[/] [plasma/] [trunk/] [kernel/] [netutil.c] - Blame information for rev 225

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/*--------------------------------------------------------------------
 * TITLE: Plasma TCP/IP Network Utilities
 * AUTHOR: Steve Rhoads (rhoadss@yahoo.com)
 * DATE CREATED: 4/20/07
 * FILENAME: netutil.c
 * PROJECT: Plasma CPU core
 * COPYRIGHT: Software placed into the public domain by the author.
 *    Software 'as is' without warranty.  Author liable for nothing.
 * DESCRIPTION:
 *    Plasma FTP server and FTP client and TFTP server and client
 *    and Telnet server.
 *--------------------------------------------------------------------*/
#ifdef WIN32
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#define _LIBC
#define INCLUDE_FILESYS
#else
#define INCLUDE_FILESYS
#endif
#include "rtos.h"
#include "tcpip.h"
#ifdef WIN32
#define UartPrintf printf
#define OS_MQueueCreate(A,B,C) 0
#define OS_MQueueGet(A,B,C) 0
#define OS_ThreadCreate(A,B,C,D,E) 0
#endif
 
 
//******************* FTP Server ************************
typedef struct {
   IPSocket *socket;
   int ip, port, bytes, done, canReceive;
   FILE *file;
} FtpdInfo;
 
static void FtpdSender(IPSocket *socket)
{
   unsigned char buf[600];
   int i, bytes, bytes2;
   FtpdInfo *info = (FtpdInfo*)socket->userPtr;
 
   if(info == NULL || info->done)
      return;
   fseek(info->file, info->bytes, 0);
   for(i = 0; i < 5; ++i)
   {
      bytes = fread(buf, 1, 512, info->file);
      bytes2 = IPWrite(socket, buf, bytes);
      info->bytes += bytes2;
      if(bytes != bytes2)
         return;
      if(bytes < 512)
      {
         fclose(info->file);
         IPClose(socket);
         info->done = 1;
         IPPrintf(info->socket, "226 Done\r\n");
         return;
      }
   }
}
 
 
static void FtpdReceiver(IPSocket *socket)
{
   unsigned char buf[600];
   int bytes, state = socket->state;
   FtpdInfo *info = (FtpdInfo*)socket->userPtr;
 
   if(info == NULL || info->done)
      return;
   do
   {
      bytes = IPRead(socket, buf, sizeof(buf));
      fwrite(buf, 1, bytes, info->file);
   } while(bytes);
   if(state > IP_TCP)
   {
      fclose(info->file);
      IPClose(socket);
      info->done = 1;
      IPPrintf(info->socket, "226 Done\r\n");
      return;
   }
}
 
 
static void FtpdServer(IPSocket *socket)
{
   uint8 buf[600];
   int bytes;
   int ip0, ip1, ip2, ip3, port0, port1;
   IPSocket *socketOut;
   FtpdInfo *info = (FtpdInfo*)socket->userPtr;
 
   if(socket == NULL)
      return;
   bytes = IPRead(socket, buf, sizeof(buf)-1);
   buf[bytes] = 0;
   //printf("(%s)\n", buf);
   if(socket->userPtr == NULL)
   {
      info = (FtpdInfo*)malloc(sizeof(FtpdInfo));
      if(info == NULL)
         return;
      memset(info, 0, sizeof(FtpdInfo));
      socket->userPtr = info;
      info->socket = socket;
      socket->timeout = 0;
      IPPrintf(socket, "220 Connected to Plasma\r\n");
   }
   else if(strstr((char*)buf, "USER"))
   {
      if(strstr((char*)buf, "PlasmaSend"))
         info->canReceive = 1;
      socket->timeout = 0;
      IPPrintf(socket, "331 Password?\r\n");
   }
   else if(strstr((char*)buf, "PASS"))
   {
      IPPrintf(socket, "230 Logged in\r\n");
   }
   else if(strstr((char*)buf, "PORT"))
   {
      if(info == NULL)
         return;
      socket->timeout = 0;
      sscanf((char*)buf + 5, "%d,%d,%d,%d,%d,%d", &ip0, &ip1, &ip2, &ip3, &port0, &port1);
      info->ip = (ip0 << 24) | (ip1 << 16) | (ip2 << 8) | ip3;
      info->port = (port0 << 8) | port1;
      //printf("ip=0x%x port=%d\n", info->ip, info->port);
      IPPrintf(socket, "200 OK\r\n");
   }
   else if(strstr((char*)buf, "RETR") || strstr((char*)buf, "STOR"))
   {
      char *ptr = strstr((char*)buf, "\r");
      if(ptr)
         *ptr = 0;
      if(info == NULL)
         return;
      info->file = NULL;
      info->bytes = 0;
      info->done = 0;
      if(strstr((char*)buf, "RETR"))
         info->file = fopen((char*)buf + 5, "rb");
      else if(info->canReceive)
         info->file = fopen((char*)buf + 5, "wb");
      if(info->file)
      {
         IPPrintf(socket, "150 File ready\r\n");
         if(strstr((char*)buf, "RETR"))
            socketOut = IPOpen(IP_MODE_TCP, info->ip, info->port, FtpdSender);
         else
            socketOut = IPOpen(IP_MODE_TCP, info->ip, info->port, FtpdReceiver);
         if(socketOut)
            socketOut->userPtr = info;
      }
      else
      {
         IPPrintf(socket, "500 Error\r\n");
      }
   }
   else if(strstr((char*)buf, "QUIT"))
   {
      if(socket->userPtr)
         free(socket->userPtr);
      IPPrintf(socket, "221 Bye\r\n");
      IPClose(socket);
   }
   else if(bytes)
   {
      IPPrintf(socket, "500 Error\r\n");
   }
}
 
 
void FtpdInit(int UseFiles)
{
   (void)UseFiles;
   IPOpen(IP_MODE_TCP, 0, 21, FtpdServer);
}
 
 
//******************* FTP Client ************************
 
typedef struct {
   uint32 ip, port;
   char user[80], passwd[80], filename[80];
   uint8 *buf;
   int size, bytes, send, state;
} FtpInfo;
 
 
static void FtpCallbackTransfer(IPSocket *socket)
{
   int bytes, state = socket->state;
   FtpInfo *info = (FtpInfo*)socket->userPtr;
 
   //printf("FtpCallbackTransfer\n");
   if(info == NULL)
      return;
   bytes = info->size - info->bytes;
   if(info->send == 0)
      bytes = IPRead(socket, info->buf + info->bytes, bytes);
   else
      bytes = IPWrite(socket, info->buf + info->bytes, bytes);
   info->bytes += bytes;
   if(info->bytes == info->size || (bytes == 0 && state > IP_TCP))
   {
      socket->userFunc(info->buf, info->bytes);
      free(info);
      socket->userPtr = NULL;
      IPClose(socket);
   }
}
 
 
static void FtpCallback(IPSocket *socket)
{
   char buf[600];
   FtpInfo *info = (FtpInfo*)socket->userPtr;
   int bytes, value;
 
   bytes = IPRead(socket, (uint8*)buf, sizeof(buf)-1);
   if(bytes == 0)
      return;
   buf[bytes] = 0;
   sscanf(buf, "%d", &value);
   if(bytes > 2)
      buf[bytes-2] = 0;
   //printf("FtpCallback(%d:%s)\n", socket->userData, buf);
   if(value / 100 != 2 && value / 100 != 3)
      return;
   buf[0] = 0;
   switch(socket->userData) {
   case 0:
      sprintf(buf, "USER %s\r\n", info->user);
      socket->userData = 1;
      break;
   case 1:
      sprintf(buf, "PASS %s\r\n", info->passwd);
      socket->userData = 2;
      if(value == 331)
         break;  //possible fall-through
   case 2:
      sprintf(buf, "PORT %d,%d,%d,%d,%d,%d\r\n",
         info->ip >> 24, (uint8)(info->ip >> 16),
         (uint8)(info->ip >> 8), (uint8)info->ip,
         (uint8)(info->port >> 8), (uint8)info->port);
      socket->userData = 3;
      break;
   case 3:
      if(info->send == 0)
         sprintf(buf, "RETR %s\r\n", info->filename);
      else
         sprintf(buf, "STOR %s\r\n", info->filename);
      socket->userData = 4;
      break;
   case 4:
      sprintf(buf, "QUIT\r\n");
      socket->userData = 9;
      break;
   }
   IPWrite(socket, (uint8*)buf, strlen(buf));
   IPWriteFlush(socket);
   if(socket->userData == 9)
      IPClose(socket);
}
 
 
IPSocket *FtpTransfer(uint32 ip, char *user, char *passwd,
                      char *filename, uint8 *buf, int size,
                      int send, void (*callback)(uint8 *data, int size))
{
   IPSocket *socket, *socketTransfer;
   FtpInfo *info;
   uint8 *ptr;
   info = (FtpInfo*)malloc(sizeof(FtpInfo));
   if(info == NULL)
      return NULL;
   strncpy(info->user, user, 80);
   strncpy(info->passwd, passwd, 80);
   strncpy(info->filename, filename, 80);
   info->buf = buf;
   info->size = size;
   info->send = send;
   info->bytes = 0;
   info->state = 0;
   info->port = 2000;
   socketTransfer = IPOpen(IP_MODE_TCP, 0, info->port, FtpCallbackTransfer);
   socketTransfer->userPtr = info;
   socketTransfer->userFunc = callback;
   socket = IPOpen(IP_MODE_TCP, ip, 21, FtpCallback);
   socket->userPtr = info;
   socket->userFunc = callback;
   ptr = socket->headerSend;
   info->ip = IPAddressSelf();
   return socket;
}
 
 
//******************* TFTP Server ************************
 
 
static void TftpdCallback(IPSocket *socket)
{
   unsigned char buf[512+4];
   int bytes, blockNum;
   FILE *file = (FILE*)socket->userPtr;
   bytes = IPRead(socket, buf, sizeof(buf));
   //printf("TfptdCallback bytes=%d\n", bytes);
   if(bytes < 4 || buf[0])
      return;
   if(buf[1] == 1)  //RRQ = Read Request
   {
      if(file)
         fclose(file);
      file = fopen((char*)buf+2, "rb");
      socket->userPtr = file;
      if(file == NULL)
      {
         buf[0] = 0;
         buf[1] = 5;   //ERROR
         buf[2] = 0;
         buf[3] = 0;
         buf[4] = 'X'; //Error string
         buf[5] = 0;
         IPWrite(socket, buf, 6);
         return;
      }
   }
   if(buf[1] == 1 || buf[1] == 4) //ACK
   {
      if(file == NULL)
         return;
      if(buf[1] == 1)
         blockNum = 0;
      else
         blockNum = (buf[2] << 8) | buf[3];
      ++blockNum;
      buf[0] = 0;
      buf[1] = 3;  //DATA
      buf[2] = (uint8)(blockNum >> 8);
      buf[3] = (uint8)blockNum;
      fseek(file, (blockNum-1)*512, 0);
      bytes = fread(buf+4, 1, 512, file);
      IPWrite(socket, buf, bytes+4);
   }
}
 
 
void TftpdInit(void)
{
   IPSocket *socket;
   socket = IPOpen(IP_MODE_UDP, 0, 69, TftpdCallback);
}
 
 
//******************* TFTP Client ************************
 
 
static void TftpCallback(IPSocket *socket)
{
   unsigned char buf[512+4];
   int bytes, blockNum, length;
 
   bytes = IPRead(socket, buf, sizeof(buf));
   if(bytes < 4 || buf[0])
      return;
   blockNum = (buf[2] << 8) | buf[3];
   length = blockNum * 512 - 512 + bytes - 4;
   //printf("TftpCallback(%d,%d)\n", buf[1], blockNum);
   if(length > (int)socket->userData)
   {
      bytes -= length - (int)socket->userData;
      length = (int)socket->userData;
   }
   if(buf[1] == 3) //DATA
   {
      memcpy((uint8*)socket->userPtr + blockNum * 512 - 512, buf+4, bytes-4);
      buf[1] = 4; //ACK
      IPWrite(socket, buf, 4);
      if(bytes-4 < 512)
      {
         socket->userFunc(socket->userPtr, length);
         IPClose(socket);
      }
   }
}
 
 
IPSocket *TftpTransfer(uint32 ip, char *filename, uint8 *buffer, int size,
                       void (*callback)(uint8 *data, int bytes))
{
   IPSocket *socket;
   uint8 buf[512+4];
   int bytes;
   socket = IPOpen(IP_MODE_UDP, ip, 69, TftpCallback);
   socket->userPtr = buffer;
   socket->userData = size;
   socket->userFunc = callback;
   buf[0] = 0;
   buf[1] = 1; //read
   strcpy((char*)buf+2, filename);
   bytes = strlen(filename);
   strcpy((char*)buf+bytes+3, "octet");
   IPWrite(socket, buf, bytes+9);
   return socket;
}
 
 
//******************* Telnet Server ************************
 
#define COMMAND_BUFFER_SIZE 80
#define COMMAND_BUFFER_COUNT 10
static char CommandHistory[400];
static char *CommandPtr[COMMAND_BUFFER_COUNT];
static int CommandIndex;
static TelnetFunc_t *TelnetFuncList;
 
 
static void TelnetServer(IPSocket *socket)
{
   uint8 buf[COMMAND_BUFFER_SIZE+4];
   char bufOut[COMMAND_BUFFER_SIZE+32];
   int bytes, i, j, length;
   char *ptr, *command = socket->userPtr;
   bytes = IPRead(socket, buf, sizeof(buf)-1);
   if(bytes == 0)
   {
      if(socket->userData)
         return;
      socket->userData = 1;
      socket->userPtr = command = (char*)malloc(COMMAND_BUFFER_SIZE);
      if(command == NULL)
      {
         IPClose(socket);
         return;
      }
      socket->timeout = 0;
      buf[0] = 255; //IAC
      buf[1] = 251; //WILL
      buf[2] = 3;   //suppress go ahead
      buf[3] = 255; //IAC
      buf[4] = 251; //WILL
      buf[5] = 1;   //echo
      strcpy((char*)buf+6, " Welcome to Plasma.\r\n-> ");
      IPWrite(socket, buf, 6+23);
      IPWriteFlush(socket);
      command[0] = 0;
      return;
   }
   if(command == NULL)
      return;
   buf[bytes] = 0;
   length = (int)strlen(command);
   for(j = 0; j < bytes; ++j)
   {
      if(buf[j] == 255)
         return;
      if(buf[j] == 8 || (buf[j] == 27 && buf[j+2] == 'D'))
      {
         if(buf[j] == 27)
            j += 2;
         if(length)
         {
            // Backspace
            command[--length] = 0;
            bufOut[0] = 8;
            bufOut[1] = ' ';
            bufOut[2] = 8;
            IPWrite(socket, (uint8*)bufOut, 3);
         }
      }
      else if(buf[j] == 27)
      {
         // Command History
         if(buf[j+2] == 'A')
         {
            if(++CommandIndex > COMMAND_BUFFER_COUNT)
               CommandIndex = COMMAND_BUFFER_COUNT;
         }
         else if(buf[j+2] == 'B')
         {
            if(--CommandIndex < 0)
               CommandIndex = 0;
         }
         else
            return;
         bufOut[0] = 8;
         bufOut[1] = ' ';
         bufOut[2] = 8;
         for(i = 0; i < length; ++i)
            IPWrite(socket, (uint8*)bufOut, 3);
         if(CommandIndex && CommandPtr[CommandIndex-1])
            strcpy(command, CommandPtr[CommandIndex-1]);
         else
            command[0] = 0;
         length = (int)strlen(command);
         IPWrite(socket, (uint8*)command, length);
         j += 2;
      }
      else
      {
         if(length < COMMAND_BUFFER_SIZE-2)
         {
            IPWrite(socket, buf+j, 1);
            command[length] = buf[j];
            command[++length] = 0;
         }
      }
      ptr = strstr(command, "\r\n");
      if(ptr)
      {
         ptr[0] = 0;
         bufOut[0] = 0;
         if(command[0])
         {
            // Save command in CommandHistory
            memcpy(CommandHistory + length + 1, CommandHistory,
               sizeof(CommandHistory) - length - 1);
            for(i = COMMAND_BUFFER_COUNT-2; i >= 0; --i)
            {
               if(CommandPtr[i+1] && CommandPtr[i+1] + length + 1 >=
                  CommandHistory + sizeof(CommandHistory))
                  CommandPtr[i+1] = NULL;
               else if(CommandPtr[i])
                  CommandPtr[i+1] = CommandPtr[i] + length + 1;
            }
            CommandPtr[CommandIndex] = CommandHistory;
            strcpy(CommandHistory, command);
         }
         if(strncmp(command, "help", 4) == 0)
         {
            sprintf((char*)bufOut, "Commands: help, exit");
            for(i = 0; TelnetFuncList[i].name; ++i)
            {
               strcat((char*)bufOut, ", ");
               strcat((char*)bufOut, TelnetFuncList[i].name);
            }
            strcat((char*)bufOut, "\r\n");
         }
         else if(strncmp(command, "exit", 4) == 0)
         {
            free(command);
            socket->userPtr = NULL;
            IPClose(socket);
            return;
         }
         else if(command[0])
         {
            strcpy(bufOut, command);
            ptr = strstr(bufOut, " ");
            if(ptr)
               ptr[0] = 0;
            for(i = 0; TelnetFuncList[i].name; ++i)
            {
               if(strcmp(bufOut, TelnetFuncList[i].name) == 0)
               {
                  TelnetFuncList[i].func(socket, command);
                  break;
               }
            }
            bufOut[0] = 0;
            if(TelnetFuncList[i].name == NULL)
               sprintf((char*)bufOut, "Unknown command (%s)\r\n", command);
         }
         strcat((char*)bufOut, "-> ");
         IPPrintf(socket, (char*)bufOut);
         command[0] = 0;
         length = 0;
         CommandIndex = 0;
      }
   }
   IPWriteFlush(socket);
}
 
 
void TelnetInit(TelnetFunc_t *funcList)
{
   IPSocket *socket;
   TelnetFuncList = funcList;
   socket = IPOpen(IP_MODE_TCP, 0, 23, TelnetServer);
}
 
 
//******************* Console ************************
 
static uint8 myBuffer[1024*3];
static IPSocket *socketTelnet;
 
 
void TransferDone(uint8 *data, int bytes)
{
   printf("TransferDone(0x%x, %d)\n", data, bytes);
   data[bytes] = 0;
   if(bytes > 500)
      data[500] = 0;
   printf("%s\n", data);
}
 
 
static void ConsoleInfo(IPSocket *socket, char *command)
{
   (void)command;
   IPPrintf(socket, "Steve was here!\r\n");
}
 
 
static void ConsoleMath(IPSocket *socket, char *command)
{
   int v1, v2;
   char buf[20], buf2[20];
   (void)socket;
   if(strlen(command) < 6)
   {
      IPPrintf(socket, "Usage: math <number> <operator> <value>\r\n");
      return;
   }
   sscanf(command, "%s%d%s%d", buf, &v1, buf2, &v2);
   if(buf2[0] == '+')
      v1 += v2;
   else if(buf2[0] == '-')
      v1 -= v2;
   else if(buf2[0] == '*')
      v1 *= v2;
   else if(buf2[0] == '/')
   {
      if(v2 != 0)
         v1 /= v2;
   }
   sprintf((char*)myBuffer, "%d\r\n", v1);
   IPPrintf(socket, (char*)myBuffer);
}
 
 
void PingCallback(IPSocket *socket)
{
   IPSocket *socket2 = socket->userPtr;
   //printf("Ping Reply\n");
   IPClose(socket);
   if(socket2)
      IPPrintf(socket2, "Ping Reply\r\n");
   else
      printf("Ping Reply\n");
}
 
 
static void DnsResultCallback(IPSocket *socket, uint32 ip, void *arg)
{
   char buf[COMMAND_BUFFER_SIZE];
   IPSocket *socketTelnet = arg;
   IPSocket *socketPing;
   (void)socket;
   sprintf(buf,  "ip=%d.%d.%d.%d\r\n",
      (uint8)(ip >> 24), (uint8)(ip >> 16), (uint8)(ip >> 8), (uint8)ip);
   IPPrintf(socketTelnet, buf);
   socketPing = IPOpen(IP_MODE_PING, ip, 0, PingCallback);
   socketPing->userPtr = socketTelnet;
   myBuffer[0] = 'A';
   IPWrite(socketPing, myBuffer, 1);
}
 
 
static void ConsolePing(IPSocket *socket, char *command)
{
   int ip0, ip1, ip2, ip3;
   char buf[20];
   IPSocket *socketPing;
   if('0' <= command[5] && command[5] <= '9')
   {
      sscanf(command, "%s %d.%d.%d.%d", buf, &ip0, &ip1, &ip2, &ip3);
      ip0 = (ip0 << 24) | (ip1 << 16) | (ip2 << 8) | ip3;
      socketPing = IPOpen(IP_MODE_PING, ip0, 0, PingCallback);
      socketPing->userPtr = socket;
      myBuffer[0] = 'A';
      IPWrite(socketPing, myBuffer, 1);
      IPPrintf(socket, "Sent ping\r\n");
   }
   else
   {
      IPResolve(command+5, DnsResultCallback, socket);
      IPPrintf(socket, "Sent DNS request\r\n");
   }
}
 
 
void ConsoleTransferDone(uint8 *data, int length)
{
   data[length] = 0;
   IPPrintf(socketTelnet, "Transfer Done\r\n");
}
 
 
static void ConsoleFtp(IPSocket *socket, char *command)
{
   char buf[40], user[40], passwd[40], name[COMMAND_BUFFER_SIZE];
   int ip0, ip1, ip2, ip3;
   if(strlen(command) < 10)
   {
      IPPrintf(socket, "ftp #.#.#.# User Password File\r\n");
      return;
   }
   sscanf(command, "%s %d.%d.%d.%d %s %s %s",
      buf, &ip0, &ip1, &ip2, &ip3, user, passwd, name);
   ip0 = (ip0 << 24) | (ip1 << 16) | (ip2 << 8) | ip3;
   socketTelnet = socket;
   FtpTransfer(ip0, user, passwd, name, myBuffer, sizeof(myBuffer)-1,
      0, ConsoleTransferDone);
}
 
 
static void ConsoleTftp(IPSocket *socket, char *command)
{
   char buf[COMMAND_BUFFER_SIZE], name[80];
   int ip0, ip1, ip2, ip3;
   if(strlen(command) < 10)
   {
      IPPrintf(socket, "tftp #.#.#.# File\r\n");
      return;
   }
   sscanf(command, "%s %d.%d.%d.%d %s",
      buf, &ip0, &ip1, &ip2, &ip3, name);
   ip0 = (ip0 << 24) | (ip1 << 16) | (ip2 << 8) | ip3;
   socketTelnet = socket;
   TftpTransfer(ip0, name, myBuffer, sizeof(myBuffer)-1, ConsoleTransferDone);
}
 
 
static void ConsoleShow(IPSocket *socket, char *command)
{
   (void)command;
   IPPrintf(socket, (char*)myBuffer);
   IPPrintf(socket, "\r\n");
}
 
 
static void ConsoleClear(IPSocket *socket, char *command)
{
   (void)socket;
   (void)command;
   memset(myBuffer, 0, sizeof(myBuffer));
}
 
 
static void ConsoleCat(IPSocket *socket, char *command)
{
   char buf[COMMAND_BUFFER_SIZE], name[80];
   int bytes, bytes2;
   FILE *file;
   sscanf(command, "%s %s\n", buf, name);
   file = fopen(name, "r");
   if(file)
   {
      for(;;)
      {
         bytes = fread(buf, 1, sizeof(buf), file);
         if(bytes == 0)
            break;
         bytes2 = IPWrite(socket, (uint8*)buf, bytes);
         if(bytes != bytes2)
            printf("(%d %d) ", bytes, bytes2);
      }
      fclose(file);
   }
   IPPrintf(socket, "\r\n");
}
 
 
static void ConsoleMkfile(IPSocket *socket, char *command)
{
   OS_FILE *file;
   (void)command;
   file = fopen("myfile.txt", "w");
   fwrite("Hello World!", 1, 12, file);
   fclose(file);
   IPPrintf(socket, "Created myfile.txt\r\n");
}
 
 
static TelnetFunc_t MyFuncs[] = {
   {"info", 0, ConsoleInfo},
   {"math", 0, ConsoleMath},
   {"ping", 0, ConsolePing},
   {"ftp", 0, ConsoleFtp},
   {"tftp", 0, ConsoleTftp},
   {"show", 0, ConsoleShow},
   {"clear", 0, ConsoleClear},
   {"cat", 0, ConsoleCat},
   {"mkfile", 0, ConsoleMkfile},
   {NULL, 0, NULL}
};
 
 
void ConsoleInit(void)
{
   FtpdInit(1);
   TftpdInit();
   TelnetInit(MyFuncs);
}

Line No.	Rev	Author	Line
1	210	rhoads	`/*--------------------------------------------------------------------`
2			`* TITLE: Plasma TCP/IP Network Utilities`
3			`* AUTHOR: Steve Rhoads (rhoadss@yahoo.com)`
4			`* DATE CREATED: 4/20/07`
5			`* FILENAME: netutil.c`
6			`* PROJECT: Plasma CPU core`
7			`* COPYRIGHT: Software placed into the public domain by the author.`
8			`* Software 'as is' without warranty. Author liable for nothing.`
9			`* DESCRIPTION:`
10			`* Plasma FTP server and FTP client and TFTP server and client`
11			`* and Telnet server.`
12			`--------------------------------------------------------------------/`
13			`#ifdef WIN32`
14			`#include <stdio.h>`
15			`#include <stdlib.h>`
16			`#include <string.h>`
17			`#include <ctype.h>`
18			`#define _LIBC`
19	215	rhoads	`#define INCLUDE_FILESYS`
20			`#else`
21			`#define INCLUDE_FILESYS`
22	210	rhoads	`#endif`
23			`#include "rtos.h"`
24			`#include "tcpip.h"`
25			`#ifdef WIN32`
26			`#define UartPrintf printf`
27			`#define OS_MQueueCreate(A,B,C) 0`
28			`#define OS_MQueueGet(A,B,C) 0`
29			`#define OS_ThreadCreate(A,B,C,D,E) 0`
30			`#endif`
31
32	215	rhoads
33			`//***************** FTP Server **********************`
34	210	rhoads	`typedef struct {`
35			`IPSocket *socket;`
36			`int ip, port, bytes, done, canReceive;`
37			`FILE *file;`
38			`} FtpdInfo;`
39
40			`static void FtpdSender(IPSocket *socket)`
41			`{`
42			`unsigned char buf[600];`
43			`int i, bytes, bytes2;`
44			`FtpdInfo info = (FtpdInfo)socket->userPtr;`
45
46			`if(info == NULL \|\| info->done)`
47			`return;`
48			`fseek(info->file, info->bytes, 0);`
49			`for(i = 0; i < 5; ++i)`
50			`{`
51			`bytes = fread(buf, 1, 512, info->file);`
52			`bytes2 = IPWrite(socket, buf, bytes);`
53			`info->bytes += bytes2;`
54			`if(bytes != bytes2)`
55			`return;`
56			`if(bytes < 512)`
57			`{`
58			`fclose(info->file);`
59			`IPClose(socket);`
60			`info->done = 1;`
61			`IPPrintf(info->socket, "226 Done\r\n");`
62			`return;`
63			`}`
64			`}`
65			`}`
66
67
68			`static void FtpdReceiver(IPSocket *socket)`
69			`{`
70			`unsigned char buf[600];`
71	225	rhoads	`int bytes, state = socket->state;`
72	210	rhoads	`FtpdInfo info = (FtpdInfo)socket->userPtr;`
73
74			`if(info == NULL \|\| info->done)`
75			`return;`
76	225	rhoads	`do`
77	210	rhoads	`{`
78	225	rhoads	`bytes = IPRead(socket, buf, sizeof(buf));`
79			`fwrite(buf, 1, bytes, info->file);`
80			`} while(bytes);`
81			`if(state > IP_TCP)`
82			`{`
83	210	rhoads	`fclose(info->file);`
84			`IPClose(socket);`
85			`info->done = 1;`
86			`IPPrintf(info->socket, "226 Done\r\n");`
87			`return;`
88			`}`
89			`}`
90
91
92	215	rhoads	`static void FtpdServer(IPSocket *socket)`
93	210	rhoads	`{`
94			`uint8 buf[600];`
95			`int bytes;`
96			`int ip0, ip1, ip2, ip3, port0, port1;`
97			`IPSocket *socketOut;`
98			`FtpdInfo info = (FtpdInfo)socket->userPtr;`
99
100			`if(socket == NULL)`
101			`return;`
102			`bytes = IPRead(socket, buf, sizeof(buf)-1);`
103			`buf[bytes] = 0;`
104			`//printf("(%s)\n", buf);`
105			`if(socket->userPtr == NULL)`
106			`{`
107			`info = (FtpdInfo*)malloc(sizeof(FtpdInfo));`
108			`if(info == NULL)`
109			`return;`
110			`memset(info, 0, sizeof(FtpdInfo));`
111			`socket->userPtr = info;`
112			`info->socket = socket;`
113			`socket->timeout = 0;`
114			`IPPrintf(socket, "220 Connected to Plasma\r\n");`
115			`}`
116			`else if(strstr((char*)buf, "USER"))`
117			`{`
118			`if(strstr((char*)buf, "PlasmaSend"))`
119			`info->canReceive = 1;`
120			`socket->timeout = 0;`
121			`IPPrintf(socket, "331 Password?\r\n");`
122			`}`
123			`else if(strstr((char*)buf, "PASS"))`
124			`{`
125			`IPPrintf(socket, "230 Logged in\r\n");`
126			`}`
127			`else if(strstr((char*)buf, "PORT"))`
128			`{`
129			`if(info == NULL)`
130			`return;`
131			`socket->timeout = 0;`
132			`sscanf((char*)buf + 5, "%d,%d,%d,%d,%d,%d", &ip0, &ip1, &ip2, &ip3, &port0, &port1);`
133			`info->ip = (ip0 << 24) \| (ip1 << 16) \| (ip2 << 8) \| ip3;`
134			`info->port = (port0 << 8) \| port1;`
135			`//printf("ip=0x%x port=%d\n", info->ip, info->port);`
136			`IPPrintf(socket, "200 OK\r\n");`
137			`}`
138			`else if(strstr((char)buf, "RETR") \|\| strstr((char)buf, "STOR"))`
139			`{`
140			`char ptr = strstr((char)buf, "\r");`
141			`if(ptr)`
142			`*ptr = 0;`
143			`if(info == NULL)`
144			`return;`
145			`info->file = NULL;`
146			`info->bytes = 0;`
147			`info->done = 0;`
148			`if(strstr((char*)buf, "RETR"))`
149			`info->file = fopen((char*)buf + 5, "rb");`
150			`else if(info->canReceive)`
151			`info->file = fopen((char*)buf + 5, "wb");`
152			`if(info->file)`
153			`{`
154			`IPPrintf(socket, "150 File ready\r\n");`
155			`if(strstr((char*)buf, "RETR"))`
156			`socketOut = IPOpen(IP_MODE_TCP, info->ip, info->port, FtpdSender);`
157			`else`
158			`socketOut = IPOpen(IP_MODE_TCP, info->ip, info->port, FtpdReceiver);`
159			`if(socketOut)`
160			`socketOut->userPtr = info;`
161			`}`
162			`else`
163			`{`
164			`IPPrintf(socket, "500 Error\r\n");`
165			`}`
166			`}`
167			`else if(strstr((char*)buf, "QUIT"))`
168			`{`
169			`if(socket->userPtr)`
170			`free(socket->userPtr);`
171			`IPPrintf(socket, "221 Bye\r\n");`
172			`IPClose(socket);`
173			`}`
174			`else if(bytes)`
175			`{`
176			`IPPrintf(socket, "500 Error\r\n");`
177			`}`
178			`}`
179
180
181			`void FtpdInit(int UseFiles)`
182			`{`
183			`(void)UseFiles;`
184			`IPOpen(IP_MODE_TCP, 0, 21, FtpdServer);`
185			`}`
186
187
188			`//***************** FTP Client **********************`
189
190			`typedef struct {`
191			`uint32 ip, port;`
192			`char user[80], passwd[80], filename[80];`
193			`uint8 *buf;`
194			`int size, bytes, send, state;`
195			`} FtpInfo;`
196
197
198			`static void FtpCallbackTransfer(IPSocket *socket)`
199			`{`
200	225	rhoads	`int bytes, state = socket->state;`
201	210	rhoads	`FtpInfo info = (FtpInfo)socket->userPtr;`
202
203			`//printf("FtpCallbackTransfer\n");`
204			`if(info == NULL)`
205			`return;`
206			`bytes = info->size - info->bytes;`
207			`if(info->send == 0)`
208			`bytes = IPRead(socket, info->buf + info->bytes, bytes);`
209			`else`
210			`bytes = IPWrite(socket, info->buf + info->bytes, bytes);`
211			`info->bytes += bytes;`
212	225	rhoads	`if(info->bytes == info->size \|\| (bytes == 0 && state > IP_TCP))`
213	210	rhoads	`{`
214			`socket->userFunc(info->buf, info->bytes);`
215			`free(info);`
216			`socket->userPtr = NULL;`
217			`IPClose(socket);`
218			`}`
219			`}`
220
221
222			`static void FtpCallback(IPSocket *socket)`
223			`{`
224			`char buf[600];`
225			`FtpInfo info = (FtpInfo)socket->userPtr;`
226			`int bytes, value;`
227
228			`bytes = IPRead(socket, (uint8*)buf, sizeof(buf)-1);`
229			`if(bytes == 0)`
230			`return;`
231			`buf[bytes] = 0;`
232			`sscanf(buf, "%d", &value);`
233			`if(bytes > 2)`
234			`buf[bytes-2] = 0;`
235			`//printf("FtpCallback(%d:%s)\n", socket->userData, buf);`
236			`if(value / 100 != 2 && value / 100 != 3)`
237			`return;`
238			`buf[0] = 0;`
239			`switch(socket->userData) {`
240			`case 0:`
241			`sprintf(buf, "USER %s\r\n", info->user);`
242			`socket->userData = 1;`
243			`break;`
244			`case 1:`
245			`sprintf(buf, "PASS %s\r\n", info->passwd);`
246			`socket->userData = 2;`
247			`if(value == 331)`
248			`break; //possible fall-through`
249			`case 2:`
250			`sprintf(buf, "PORT %d,%d,%d,%d,%d,%d\r\n",`
251			`info->ip >> 24, (uint8)(info->ip >> 16),`
252			`(uint8)(info->ip >> 8), (uint8)info->ip,`
253			`(uint8)(info->port >> 8), (uint8)info->port);`
254			`socket->userData = 3;`
255			`break;`
256			`case 3:`
257			`if(info->send == 0)`
258			`sprintf(buf, "RETR %s\r\n", info->filename);`
259			`else`
260			`sprintf(buf, "STOR %s\r\n", info->filename);`
261			`socket->userData = 4;`
262			`break;`
263			`case 4:`
264			`sprintf(buf, "QUIT\r\n");`
265			`socket->userData = 9;`
266			`break;`
267			`}`
268			`IPWrite(socket, (uint8*)buf, strlen(buf));`
269			`IPWriteFlush(socket);`
270			`if(socket->userData == 9)`
271			`IPClose(socket);`
272			`}`
273
274
275			`IPSocket FtpTransfer(uint32 ip, char user, char *passwd,`
276			`char filename, uint8 buf, int size,`
277			`int send, void (callback)(uint8 data, int size))`
278			`{`
279			`IPSocket socket, socketTransfer;`
280			`FtpInfo *info;`
281			`uint8 *ptr;`
282			`info = (FtpInfo*)malloc(sizeof(FtpInfo));`
283			`if(info == NULL)`
284			`return NULL;`
285			`strncpy(info->user, user, 80);`
286			`strncpy(info->passwd, passwd, 80);`
287			`strncpy(info->filename, filename, 80);`
288			`info->buf = buf;`
289			`info->size = size;`
290			`info->send = send;`
291			`info->bytes = 0;`
292			`info->state = 0;`
293			`info->port = 2000;`
294			`socketTransfer = IPOpen(IP_MODE_TCP, 0, info->port, FtpCallbackTransfer);`
295			`socketTransfer->userPtr = info;`
296			`socketTransfer->userFunc = callback;`
297			`socket = IPOpen(IP_MODE_TCP, ip, 21, FtpCallback);`
298			`socket->userPtr = info;`
299			`socket->userFunc = callback;`
300			`ptr = socket->headerSend;`
301			`info->ip = IPAddressSelf();`
302			`return socket;`
303			`}`
304
305
306			`//***************** TFTP Server **********************`
307
308
309			`static void TftpdCallback(IPSocket *socket)`
310			`{`
311			`unsigned char buf[512+4];`
312			`int bytes, blockNum;`
313			`FILE file = (FILE)socket->userPtr;`
314			`bytes = IPRead(socket, buf, sizeof(buf));`
315			`//printf("TfptdCallback bytes=%d\n", bytes);`
316			`if(bytes < 4 \|\| buf[0])`
317			`return;`
318			`if(buf[1] == 1) //RRQ = Read Request`
319			`{`
320			`if(file)`
321			`fclose(file);`
322			`file = fopen((char*)buf+2, "rb");`
323			`socket->userPtr = file;`
324			`if(file == NULL)`
325			`{`
326			`buf[0] = 0;`
327			`buf[1] = 5; //ERROR`
328			`buf[2] = 0;`
329			`buf[3] = 0;`
330			`buf[4] = 'X'; //Error string`
331			`buf[5] = 0;`
332			`IPWrite(socket, buf, 6);`
333			`return;`
334			`}`
335			`}`
336			`if(buf[1] == 1 \|\| buf[1] == 4) //ACK`
337			`{`
338			`if(file == NULL)`
339			`return;`
340			`if(buf[1] == 1)`
341			`blockNum = 0;`
342			`else`
343			`blockNum = (buf[2] << 8) \| buf[3];`
344			`++blockNum;`
345			`buf[0] = 0;`
346			`buf[1] = 3; //DATA`
347			`buf[2] = (uint8)(blockNum >> 8);`
348			`buf[3] = (uint8)blockNum;`
349			`fseek(file, (blockNum-1)*512, 0);`
350			`bytes = fread(buf+4, 1, 512, file);`
351			`IPWrite(socket, buf, bytes+4);`
352			`}`
353			`}`
354
355
356			`void TftpdInit(void)`
357			`{`
358			`IPSocket *socket;`
359			`socket = IPOpen(IP_MODE_UDP, 0, 69, TftpdCallback);`
360			`}`
361
362
363			`//***************** TFTP Client **********************`
364
365
366			`static void TftpCallback(IPSocket *socket)`
367			`{`
368			`unsigned char buf[512+4];`
369			`int bytes, blockNum, length;`
370
371			`bytes = IPRead(socket, buf, sizeof(buf));`
372			`if(bytes < 4 \|\| buf[0])`
373			`return;`
374			`blockNum = (buf[2] << 8) \| buf[3];`
375			`length = blockNum * 512 - 512 + bytes - 4;`
376			`//printf("TftpCallback(%d,%d)\n", buf[1], blockNum);`
377			`if(length > (int)socket->userData)`
378			`{`
379			`bytes -= length - (int)socket->userData;`
380			`length = (int)socket->userData;`
381			`}`
382			`if(buf[1] == 3) //DATA`
383			`{`
384			`memcpy((uint8)socket->userPtr + blockNum 512 - 512, buf+4, bytes-4);`
385			`buf[1] = 4; //ACK`
386			`IPWrite(socket, buf, 4);`
387			`if(bytes-4 < 512)`
388			`{`
389			`socket->userFunc(socket->userPtr, length);`
390			`IPClose(socket);`
391			`}`
392			`}`
393			`}`
394
395
396			`IPSocket TftpTransfer(uint32 ip, char filename, uint8 *buffer, int size,`
397			`void (callback)(uint8 data, int bytes))`
398			`{`
399			`IPSocket *socket;`
400			`uint8 buf[512+4];`
401			`int bytes;`
402			`socket = IPOpen(IP_MODE_UDP, ip, 69, TftpCallback);`
403			`socket->userPtr = buffer;`
404			`socket->userData = size;`
405			`socket->userFunc = callback;`
406			`buf[0] = 0;`
407			`buf[1] = 1; //read`
408			`strcpy((char*)buf+2, filename);`
409			`bytes = strlen(filename);`
410			`strcpy((char*)buf+bytes+3, "octet");`
411			`IPWrite(socket, buf, bytes+9);`
412			`return socket;`
413			`}`
414
415
416			`//***************** Telnet Server **********************`
417
418	215	rhoads	`#define COMMAND_BUFFER_SIZE 80`
419			`#define COMMAND_BUFFER_COUNT 10`
420			`static char CommandHistory[400];`
421			`static char *CommandPtr[COMMAND_BUFFER_COUNT];`
422			`static int CommandIndex;`
423	210	rhoads	`static TelnetFunc_t *TelnetFuncList;`
424
425
426			`static void TelnetServer(IPSocket *socket)`
427			`{`
428	215	rhoads	`uint8 buf[COMMAND_BUFFER_SIZE+4];`
429			`char bufOut[COMMAND_BUFFER_SIZE+32];`
430			`int bytes, i, j, length;`
431			`char ptr, command = socket->userPtr;`
432	210	rhoads	`bytes = IPRead(socket, buf, sizeof(buf)-1);`
433			`if(bytes == 0)`
434			`{`
435			`if(socket->userData)`
436			`return;`
437			`socket->userData = 1;`
438	215	rhoads	`socket->userPtr = command = (char*)malloc(COMMAND_BUFFER_SIZE);`
439			`if(command == NULL)`
440			`{`
441			`IPClose(socket);`
442			`return;`
443			`}`
444	210	rhoads	`socket->timeout = 0;`
445			`buf[0] = 255; //IAC`
446			`buf[1] = 251; //WILL`
447			`buf[2] = 3; //suppress go ahead`
448			`buf[3] = 255; //IAC`
449			`buf[4] = 251; //WILL`
450			`buf[5] = 1; //echo`
451	215	rhoads	`strcpy((char*)buf+6, " Welcome to Plasma.\r\n-> ");`
452	210	rhoads	`IPWrite(socket, buf, 6+23);`
453			`IPWriteFlush(socket);`
454			`command[0] = 0;`
455			`return;`
456			`}`
457	215	rhoads	`if(command == NULL)`
458			`return;`
459	210	rhoads	`buf[bytes] = 0;`
460	215	rhoads	`length = (int)strlen(command);`
461			`for(j = 0; j < bytes; ++j)`
462	210	rhoads	`{`
463	215	rhoads	`if(buf[j] == 255)`
464			`return;`
465			`if(buf[j] == 8 \|\| (buf[j] == 27 && buf[j+2] == 'D'))`
466	210	rhoads	`{`
467	215	rhoads	`if(buf[j] == 27)`
468			`j += 2;`
469			`if(length)`
470			`{`
471			`// Backspace`
472			`command[--length] = 0;`
473			`bufOut[0] = 8;`
474			`bufOut[1] = ' ';`
475			`bufOut[2] = 8;`
476			`IPWrite(socket, (uint8*)bufOut, 3);`
477			`}`
478	210	rhoads	`}`
479	215	rhoads	`else if(buf[j] == 27)`
480	210	rhoads	`{`
481	215	rhoads	`// Command History`
482			`if(buf[j+2] == 'A')`
483	210	rhoads	`{`
484	215	rhoads	`if(++CommandIndex > COMMAND_BUFFER_COUNT)`
485			`CommandIndex = COMMAND_BUFFER_COUNT;`
486	210	rhoads	`}`
487	215	rhoads	`else if(buf[j+2] == 'B')`
488			`{`
489			`if(--CommandIndex < 0)`
490			`CommandIndex = 0;`
491			`}`
492			`else`
493			`return;`
494			`bufOut[0] = 8;`
495			`bufOut[1] = ' ';`
496			`bufOut[2] = 8;`
497			`for(i = 0; i < length; ++i)`
498			`IPWrite(socket, (uint8*)bufOut, 3);`
499			`if(CommandIndex && CommandPtr[CommandIndex-1])`
500			`strcpy(command, CommandPtr[CommandIndex-1]);`

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