/****************************************************************************
Function:
void DDNSTask(void)
Summary:
Dynamic DNS client task/state machine.
Description:
This function performs the background tasks of the Dynamic DNS Client.
Once the DDNSPointers structure is configured, this task attempt to
update the Dynamic DNS hostname on a periodic schedule.
The task first accesses the CheckIP server to determine the device's
current external IP address. If the IP address has changed, it
issues an update command to the dynamic DNS service to propagate the
change. This sequence executes whenever dwUpdateAt elapses, which by
default is every 10 minutes, or when an update is forced.
Precondition:
DDNSInit() has been called.
Parameters:
None
Returns:
None
Remarks:
This function acts as a task (similar to one in an RTOS). It
performs its task in a co-operative manner, and the main application
must call this function periodically to ensure that its tasks get
executed in a timely fashion.
***************************************************************************/
void DDNSTask(void)
{
uint8_t i;
static SYS_TICK DDnsTimer;
static TCP_SOCKET MySocket = INVALID_SOCKET;
static char const * ROMStrPtr;
static char * RAMStrPtr;
static uint8_t vBuffer[16];
uint16_t wPos;
static IP_ADDR ipParsed;
static enum
{
SM_IDLE = 0u,
SM_BEGIN_CHECKIP, //0x1
SM_CHECKIP_SKT_OBTAINED, //0x2
SM_CHECKIP_FIND_DELIMITER, //0x3
SM_CHECKIP_FIND_ADDRESS, //0x4
SM_CHECKIP_DISCONNECT, //0x5
SM_IP_UPDATE_HOME, //0x6
SM_IP_UPDATE_SKT_OBTAINED, //0x7
/*
HTTP request msg is divided into 6 parts
SM_IP_UPDATE_REQ_A,B,C,D,E,F as the tcp ip tx
buffer is only able to carry 200 bytes at a time.
*/
SM_IP_UPDATE_REQ_A, //0x8
SM_IP_UPDATE_REQ_B, //0x9
SM_IP_UPDATE_REQ_C, //0xa
SM_IP_UPDATE_REQ_D, //0xb
SM_IP_UPDATE_REQ_E, //0xc
SM_IP_UPDATE_REQ_F, //0xd
SM_IPUPDATE_FIND_RESPONSE, //0xe
SM_IPUPDATE_PARSE_RESPONSE, //0xf
SM_IPUDATE_DISCONNECT, //0x10
SM_DONE, // Done, try again in 10 minutes
SM_SOFT_ERROR, // Soft error, try again in 30 seconds
SM_SYSTEM_ERROR // System error, try again in 30 minutes
} smDDNS = SM_IDLE;
switch(smDDNS)
{
case SM_IDLE:
// Wait for timeout to begin IP check
if(SYS_TICK_Get() > dwUpdateAt)
break;
// Otherwise, continue to next state
smDDNS = SM_BEGIN_CHECKIP;
case SM_BEGIN_CHECKIP:
// If a fatal error has occurred, abort to the SM_DONE state and keep
// the error message.
if(lastStatus >= DDNS_STATUS_ABUSE && lastStatus <= DDNS_STATUS_911)
{
smDDNS = SM_DONE;
break;
}
// If DDNSClient is not properly configured, abort
if(
// Verify that each pointer is not null, and is not empty
(DDNSClient.ROMPointers.Host && (!DDNSClient.Host.szROM || *DDNSClient.Host.szROM == '\0') ) ||
(!DDNSClient.ROMPointers.Host && (!DDNSClient.Host.szRAM || *DDNSClient.Host.szRAM == '\0') ) ||
(DDNSClient.ROMPointers.Username && (!DDNSClient.Username.szROM || *DDNSClient.Username.szROM == '\0') ) ||
(!DDNSClient.ROMPointers.Username && (!DDNSClient.Username.szRAM || *DDNSClient.Username.szRAM == '\0') ) ||
(DDNSClient.ROMPointers.Password && (!DDNSClient.Password.szROM || *DDNSClient.Password.szROM == '\0') ) ||
(!DDNSClient.ROMPointers.Password && (!DDNSClient.Password.szRAM || *DDNSClient.Password.szRAM == '\0') ) ||
(DDNSClient.ROMPointers.CheckIPServer && (!DDNSClient.CheckIPServer.szROM || *DDNSClient.CheckIPServer.szROM == '\0') ) ||
(!DDNSClient.ROMPointers.CheckIPServer && (!DDNSClient.CheckIPServer.szRAM || *DDNSClient.CheckIPServer.szRAM == '\0') ) ||
(DDNSClient.ROMPointers.UpdateServer && (!DDNSClient.UpdateServer.szROM || *DDNSClient.UpdateServer.szROM == '\0') ) ||
(!DDNSClient.ROMPointers.UpdateServer && (!DDNSClient.UpdateServer.szRAM || *DDNSClient.UpdateServer.szRAM == '\0') )
)
{
smDDNS = SM_SOFT_ERROR;
lastStatus = DDNS_STATUS_INVALID;
break;
}
// Start with an invalidated IP String
vBuffer[0] = '\0';
// Connect a socket to the remote server
if(DDNSClient.ROMPointers.CheckIPServer)
{
MySocket = TCPOpen((uint32_t)(PTR_BASE)DDNSClient.CheckIPServer.szROM, TCP_OPEN_ROM_HOST,
DDNSClient.CheckIPPort, TCP_PURPOSE_DEFAULT);
}
else
{
MySocket = TCPOpen((uint32_t)(PTR_BASE)DDNSClient.CheckIPServer.szRAM, TCP_OPEN_RAM_HOST,
DDNSClient.CheckIPPort, TCP_PURPOSE_DEFAULT);
}
// If no socket available, try again on next loop
if(MySocket == INVALID_SOCKET)
break;
smDDNS++;
DDnsTimer = SYS_TICK_Get();
break;
case SM_CHECKIP_SKT_OBTAINED:
// Wait for the remote server to accept our connection request
if(!TCPIsConnected(MySocket))
{
// Time out if too much time is spent in this state
if(SYS_TICK_Get()-DDnsTimer > 6*SYS_TICK_TicksPerSecondGet())
{
// Close the socket so it can be used by other modules
// We will retry soon
TCPDisconnect(MySocket);
MySocket = INVALID_SOCKET;
lastStatus = DDNS_STATUS_CHECKIP_ERROR;
smDDNS = SM_SOFT_ERROR;
}
break;
}
DDnsTimer = SYS_TICK_Get();
// Make certain the socket can be written to
if(TCPIsPutReady(MySocket) < 125u)//125 = size of TCP Tx buffer
break;
// Transmit the request to the server
TCPPutString(MySocket, (const uint8_t*)"GET / HTTP/1.0\r\nHost: ");
if(DDNSClient.ROMPointers.CheckIPServer)
{
TCPPutString(MySocket, DDNSClient.CheckIPServer.szROM);
}
else
{
TCPPutString(MySocket, DDNSClient.CheckIPServer.szRAM);
}
TCPPutString(MySocket, (const uint8_t*)"\r\nConnection: close\r\n\r\n");
// Send the packet
TCPFlush(MySocket);
smDDNS++;
break;
case SM_CHECKIP_FIND_DELIMITER:
// Check if remote node is still connected. If not, force to the disconnect state,
// but don't break because data may still be waiting.
if(!TCPIsConnected(MySocket) || SYS_TICK_Get() - DDnsTimer > 6*SYS_TICK_TicksPerSecondGet())
smDDNS = SM_CHECKIP_DISCONNECT;
// Search out the "Address: " delimiter in the response
wPos = TCPFindArray(MySocket, (const uint8_t*)"Address: ", 9, 0, 0, false);
// If not yet found, clear as much as possible and break
if(wPos == 0xffff)
{
wPos = TCPIsGetReady(MySocket);
if(wPos > 9u)
TCPGetArray(MySocket, NULL, wPos - 9);
break;
}
// Clear up to and past that string
TCPGetArray(MySocket, NULL, wPos + 9);
// Continue on to read the IP
DDnsTimer = SYS_TICK_Get();
smDDNS++;
case SM_CHECKIP_FIND_ADDRESS:
// Check if remote node is still connected. If not, force to the disconnect state,
// but don't break because data may still be waiting.
if(!TCPIsConnected(MySocket) || SYS_TICK_Get() - DDnsTimer > 6*SYS_TICK_TicksPerSecondGet())
smDDNS = SM_CHECKIP_DISCONNECT;
// Search out the "</body>" delimiter in the response
wPos = TCPFindArray(MySocket, (const uint8_t*)"</body>", 7, 0, 0, false);
// If not yet found, break
if(wPos == 0xffff)
break;
// Read and terminate that string as the IP address (preventing buffer overflows)
if(wPos > 15u)
wPos = 15;
TCPGetArray(MySocket, vBuffer, wPos);
vBuffer[wPos] = '\0';
// Parse the IP address that was read, invalidating on failure
if(!TCPIP_HELPER_StringToIPAddress((char*)vBuffer, &ipParsed))
vBuffer[0] = '\0';
// Continue on to close the socket
case SM_CHECKIP_DISCONNECT:
// Close the socket
TCPDisconnect(MySocket);
MySocket = INVALID_SOCKET;
// Determine if an update is necessary
if(vBuffer[0] == '\0')
{// CheckIP Failed
lastStatus = DDNS_STATUS_CHECKIP_ERROR;
smDDNS = SM_SOFT_ERROR;
break;
}
if( (ipParsed.Val ==lastKnownIP.Val) && (!bForceUpdate))
{
// IP address has not changed and no update is forced
lastStatus = DDNS_STATUS_UNCHANGED;
smDDNS = SM_DONE;
break;
}
// Need to perform an update
lastKnownIP = ipParsed;
bForceUpdate = false;
smDDNS++;
break;
case SM_IP_UPDATE_HOME:
// Connect a socket to the remote server
if(DDNSClient.ROMPointers.UpdateServer)
{
MySocket = TCPOpen((uint32_t)(PTR_BASE)DDNSClient.UpdateServer.szROM, TCP_OPEN_ROM_HOST,
DDNSClient.UpdatePort, TCP_PURPOSE_DEFAULT);
}
else
{
MySocket = TCPOpen((uint32_t)(PTR_BASE)DDNSClient.UpdateServer.szRAM, TCP_OPEN_RAM_HOST,
DDNSClient.UpdatePort, TCP_PURPOSE_DEFAULT);
}
// If no socket is available, try again on the next loop
if(MySocket == INVALID_SOCKET)
break;
// Move on to the next state
smDDNS++;
DDnsTimer = SYS_TICK_Get();
break;
case SM_IP_UPDATE_SKT_OBTAINED:
// Wait for the remote server to accept our connection request
if(!TCPIsConnected(MySocket))
{
// Time out if too much time is spent in this state
if(SYS_TICK_Get() - DDnsTimer > 6*SYS_TICK_TicksPerSecondGet())
{
// Close the socket so it can be used by other modules
// We will try again immediately
TCPDisconnect(MySocket);
MySocket = INVALID_SOCKET;
lastStatus = DDNS_STATUS_UPDATE_ERROR;
smDDNS--;
}
break;
}
// Reset timer and begin sending the request
DDnsTimer = SYS_TICK_Get();
smDDNS++;
// No break needed...try to send first bit immediately.
case SM_IP_UPDATE_REQ_A:
// Check for lost connections or timeouts
if(!TCPIsConnected(MySocket) || (SYS_TICK_Get() - DDnsTimer > 10*SYS_TICK_TicksPerSecondGet()))
{
lastStatus = DDNS_STATUS_UPDATE_ERROR;
smDDNS = SM_IPUDATE_DISCONNECT;
break;
}
if(TCPIsPutReady(MySocket) < 25u) // 25 =~ 16+9
break;
TCPPutString(MySocket, (const uint8_t*)"GET /nic/update?hostname=");
smDDNS++;
// No break needed...try to send next bit immediately.
case SM_IP_UPDATE_REQ_B:
// Check for lost connections or timeouts
if(!TCPIsConnected(MySocket) || (SYS_TICK_Get() - DDnsTimer > 10*SYS_TICK_TicksPerSecondGet()))
{
lastStatus = DDNS_STATUS_UPDATE_ERROR;
smDDNS = SM_IPUDATE_DISCONNECT;
break;
}
// Try to write, verifying that space is available first
if(DDNSClient.ROMPointers.Host)
{
if(TCPIsPutReady(MySocket) < strlen((const char*)DDNSClient.Host.szROM))
break;
TCPPutString(MySocket,DDNSClient.Host.szROM);
}
else
{
if(TCPIsPutReady(MySocket) < strlen((char*)DDNSClient.Host.szRAM))
break;
TCPPutString(MySocket,DDNSClient.Host.szRAM);
}
smDDNS++;
// No break needed...try to send next bit immediately.
case SM_IP_UPDATE_REQ_C:
// Check for lost connections or timeouts
if(!TCPIsConnected(MySocket) || SYS_TICK_Get() - DDnsTimer > 10*SYS_TICK_TicksPerSecondGet())
{
lastStatus = DDNS_STATUS_UPDATE_ERROR;
smDDNS = SM_IPUDATE_DISCONNECT;
break;
}
if(TCPIsPutReady(MySocket) < 70u)
break;
TCPPutString(MySocket, (const uint8_t*)"&myip=");
TCPPutString(MySocket, vBuffer);
TCPPutString(MySocket, (const uint8_t*)"&wildcard=NOCHG&mx=NOCHG&backmx=NOCHG HTTP/1.0");
TCPFlush(MySocket);
smDDNS++;
// No break needed...try to send next bit immediately.
case SM_IP_UPDATE_REQ_D:
// Check for lost connections or timeouts
if(!TCPIsConnected(MySocket) || SYS_TICK_Get() - DDnsTimer > 10*SYS_TICK_TicksPerSecondGet())
{
lastStatus = DDNS_STATUS_UPDATE_ERROR;
smDDNS = SM_IPUDATE_DISCONNECT;
break;
}
if(TCPIsPutReady(MySocket) < 131u) // 131 =~ 8+23 + dynamic dns server hostname
break;
TCPPutString(MySocket, (const uint8_t*)"\r\nHost: ");//8
if(DDNSClient.ROMPointers.UpdateServer)
TCPPutString(MySocket,DDNSClient.UpdateServer.szROM);
else
TCPPutString(MySocket,DDNSClient.UpdateServer.szRAM);
TCPPutString(MySocket, (const uint8_t*)"\r\nAuthorization: Basic ");//23
TCPFlush(MySocket);
smDDNS++;
// No break needed...try to send the next bit immediately.
case SM_IP_UPDATE_REQ_E:
// Check for lost connections or timeouts
if(!TCPIsConnected(MySocket) || SYS_TICK_Get() - DDnsTimer > 6*SYS_TICK_TicksPerSecondGet())
{
lastStatus = DDNS_STATUS_UPDATE_ERROR;
smDDNS = SM_IPUDATE_DISCONNECT;
break;
}
// User name and passwords for DynDNS.org can each be up to 24 characters
// Base64 encoded data is always at least 25% bigger than the original
if(TCPIsPutReady(MySocket) < 100u)
break;
if(DDNSClient.ROMPointers.Username)
{
ROMStrPtr = (const char*)DDNSClient.Username.szROM;
wPos = strlen(ROMStrPtr);
}
else
{
RAMStrPtr = (char*)DDNSClient.Username.szRAM;
wPos = strlen((char*)RAMStrPtr);
}
i = 0;
while(wPos)
{
while(i < wPos && i < 3u)
{
if(DDNSClient.ROMPointers.Username)
vBuffer[i] = *ROMStrPtr++;
else
vBuffer[i] = *RAMStrPtr++;
i++;
}
wPos -= i;
if(i == 3u)
{
Base64Encode(vBuffer, i, vBuffer, 4);
TCPPutArray(MySocket, vBuffer, 4);
i = 0;
}
}
if(DDNSClient.ROMPointers.Password)
{
ROMStrPtr = (const char*)DDNSClient.Password.szROM;
wPos = strlen(ROMStrPtr);
}
else
{
RAMStrPtr = (char*)DDNSClient.Password.szRAM;
wPos = strlen((char*)RAMStrPtr);
}
// Increment for the ':' separator and i for bytes left in username
wPos += i + 1;
vBuffer[i++] = ':';
while(wPos)
{
while(i < wPos && i < 3u)
{
if(DDNSClient.ROMPointers.Password)
vBuffer[i] = *ROMStrPtr++;
else
vBuffer[i] = *RAMStrPtr++;
i++;
}
wPos -= i;
Base64Encode(vBuffer, i, vBuffer, 4);
TCPPutArray(MySocket, vBuffer, 4);
i = 0;
}
TCPFlush(MySocket);
smDDNS++;
break;
case SM_IP_UPDATE_REQ_F:
// Check for lost connections or timeouts
if(!TCPIsConnected(MySocket) || SYS_TICK_Get() - DDnsTimer > 10*SYS_TICK_TicksPerSecondGet())
{
lastStatus = DDNS_STATUS_UPDATE_ERROR;
smDDNS = SM_IPUDATE_DISCONNECT;
break;
}
if(TCPIsPutReady(MySocket) < 50u)
break;
TCPPutString(MySocket, (const uint8_t*)"\r\nUser-Agent: Microchip - TCPIPSTACK - "TCPIP_STACK_VERSION"\r\n\r\n");
TCPFlush(MySocket);
smDDNS++;
// Reset the timer to wait for a response
DDnsTimer = SYS_TICK_Get();
break;
case SM_IPUPDATE_FIND_RESPONSE:
// Locate the response string
// Wait up to 10 seconds for a response
if(SYS_TICK_Get() - DDnsTimer > 10*SYS_TICK_TicksPerSecondGet())
{
lastStatus = DDNS_STATUS_UPDATE_ERROR;
smDDNS = SM_IPUDATE_DISCONNECT;
break;
}
// According to HTTP, the response will start after the two CRLFs
wPos = TCPFindArray(MySocket, (const uint8_t*)"\r\n\r\n", 4, 0, 0, false);
// If not yet found, eliminate everything up to
if(wPos == 0xffff)
{
wPos = TCPIsGetReady(MySocket);
if(wPos > 4u)
TCPGetArray(MySocket, NULL, wPos - 4);
break;
}
TCPGetArray(MySocket, NULL, wPos+4);
smDDNS++;
// No break...continue to next state immediately
case SM_IPUPDATE_PARSE_RESPONSE:
// Try to parse the response text
// Wait up to 10 seconds for the remote server to disconnect
// so we know all data has been received
if(TCPIsConnected(MySocket) && SYS_TICK_Get() - DDnsTimer < 10*SYS_TICK_TicksPerSecondGet())
break;
// Read the response code
wPos = TCPIsGetReady(MySocket);
if(wPos > sizeof(vBuffer) - 1)
wPos = sizeof(vBuffer) - 1;
wPos = TCPGetArray(MySocket, vBuffer, wPos);
vBuffer[wPos] = '\0';
for(i = 0; i < sizeof(vBuffer); i++)
if(vBuffer[i] == ' ')
vBuffer[i] = '\0';
for(lastStatus = 0; lastStatus < DDNS_STATUS_UPDATE_ERROR; lastStatus++)
if(!strcmp((char*)vBuffer, (const char*)_updateIpSrvrResponse[lastStatus]))
break;
smDDNS++;
// No break...continue to finalization
case SM_IPUDATE_DISCONNECT:
// Close the socket so it can be used by other modules.
if(MySocket != INVALID_SOCKET)
{
TCPDisconnect(MySocket);
MySocket = INVALID_SOCKET;
}
// Determine what to do based on status
if(lastStatus <= DDNS_STATUS_NUMHOST || lastStatus == DDNS_STATUS_UNCHANGED)
smDDNS = SM_DONE;
else if(lastStatus == DDNS_STATUS_911 || lastStatus == DDNS_STATUS_DNSERR)
smDDNS = SM_SYSTEM_ERROR;
else
smDDNS = SM_SOFT_ERROR;
smDDNS++;
break;
case SM_DONE:
dwUpdateAt = SYS_TICK_Get() + 10*60*SYS_TICK_TicksPerSecondGet(); // 10 minutes
smDDNS = SM_IDLE;
break;
case SM_SOFT_ERROR:
dwUpdateAt = SYS_TICK_Get() + 30*SYS_TICK_TicksPerSecondGet(); // 30 seconds
smDDNS = SM_IDLE;
break;
case SM_SYSTEM_ERROR:
dwUpdateAt = SYS_TICK_Get() + 30*60*SYS_TICK_TicksPerSecondGet(); // 30 minutes
smDDNS = SM_IDLE;
break;
}
}
void TelnetTask(void)
{
BYTE vTelnetSession;
WORD w, w2;
TCP_SOCKET MySocket;
char outstr[60];
// Perform one time initialization on power up
if(!bInitialized)
{
for(vTelnetSession = 0; vTelnetSession < MAX_TELNET_CONNECTIONS; vTelnetSession++)
{
hTelnetSockets[vTelnetSession] = INVALID_SOCKET;
vTelnetStates[vTelnetSession] = SM_HOME;
}
bInitialized = TRUE;
}
// Loop through each telnet session and process state changes and TX/RX data
for(vTelnetSession = 0; vTelnetSession < MAX_TELNET_CONNECTIONS; vTelnetSession++)
{
// Load up static state information for this session
MySocket = hTelnetSockets[vTelnetSession];
TelnetState = vTelnetStates[vTelnetSession];
// Reset our state if the remote client disconnected from us
if(MySocket != INVALID_SOCKET)
{
if(TCPWasReset(MySocket))
TelnetState = SM_PRINT_LOGIN;
}
// Handle session state
switch(TelnetState)
{
case SM_HOME:
// Connect a socket to the remote TCP server
MySocket = TCPOpen(0, TCP_OPEN_SERVER, TELNET_PORT, TCP_PURPOSE_TELNET);
// Abort operation if no TCP socket of type TCP_PURPOSE_TELNET is available
// If this ever happens, you need to go add one to TCPIPConfig.h
if(MySocket == INVALID_SOCKET)
break;
// Open an SSL listener if SSL server support is enabled
#if defined(STACK_USE_SSL_SERVER)
TCPAddSSLListener(MySocket, TELNETS_PORT);
#endif
TelnetState++;
break;
case SM_PRINT_LOGIN:
#if defined(STACK_USE_SSL_SERVER)
// Reject unsecured connections if TELNET_REJECT_UNSECURED is defined
#if defined(TELNET_REJECT_UNSECURED)
if(!TCPIsSSL(MySocket))
{
if(TCPIsConnected(MySocket))
{
TCPDisconnect(MySocket);
TCPDisconnect(MySocket);
break;
}
}
#endif
// Don't attempt to transmit anything if we are still handshaking.
if(TCPSSLIsHandshaking(MySocket))
break;
#endif
sprintf(outstr,"%s%d%s",(char *)strTitle,AppConfig.SerialNumber,(char *)strTitle1);
// Make certain the socket can be written to
if(TCPIsPutReady(MySocket) < strlen(outstr))
break;
// Place the application protocol data into the transmit buffer.
TCPPutString(MySocket, (BYTE *)outstr);
// Send the packet
TCPFlush(MySocket);
TelnetState++;
case SM_GET_LOGIN:
// Make sure we can put the password prompt
if(TCPIsPutReady(MySocket) < strlenpgm((ROM char*)strPassword))
break;
// See if the user pressed return
w = TCPFind(MySocket, '\n', 0, FALSE);
if(w == 0xFFFFu)
{
if(TCPGetRxFIFOFree(MySocket) == 0u)
{
TCPPutROMString(MySocket, (ROM BYTE*)"\r\nToo much data.\r\n");
TCPDisconnect(MySocket);
}
break;
}
// Search for the username -- case insensitive
w2 = TCPFindArray(MySocket, TELNET_USERNAME, strlen((char*)TELNET_USERNAME), 0, TRUE);
if((w2 < 0) || !((w2 == ((w - strlen((char *)TELNET_USERNAME)) - 1)) || (w2 == (w - strlen((char *)TELNET_USERNAME)))))
{
// Did not find the username, but let's pretend we did so we don't leak the user name validity
TelnetState = SM_GET_PASSWORD_BAD_LOGIN;
}
else
{
TelnetState = SM_GET_PASSWORD;
}
// Username verified, throw this line of data away
TCPGetArray(MySocket, NULL, w + 1);
// Print the password prompt
TCPPutROMString(MySocket, strPassword);
TCPFlush(MySocket);
break;
case SM_GET_PASSWORD:
case SM_GET_PASSWORD_BAD_LOGIN:
// Make sure we can put the authenticated prompt
if(TCPIsPutReady(MySocket) < strlenpgm((ROM char*)strAuthenticated))
break;
// See if the user pressed return
w = TCPFind(MySocket, '\n', 0, FALSE);
if(w == 0xFFFFu)
{
if(TCPGetRxFIFOFree(MySocket) == 0u)
{
TCPPutROMString(MySocket, (ROM BYTE*)"Too much data.\r\n");
TCPDisconnect(MySocket);
}
break;
}
// Search for the password -- case sensitive
w2 = TCPFindArray(MySocket, TELNET_PASSWORD, strlen((char *)TELNET_PASSWORD), 0, FALSE);
if((w2 != 3u) || !(((strlen((char *)TELNET_PASSWORD) == w-4)) || ((strlen((char *)TELNET_PASSWORD) == w-3)))
|| (TelnetState == SM_GET_PASSWORD_BAD_LOGIN))
{
// Did not find the password
TelnetState = SM_PRINT_LOGIN;
TCPPutROMString(MySocket, strAccessDenied);
TCPDisconnect(MySocket);
break;
}
// Password verified, throw this line of data away
TCPGetArray(MySocket, NULL, w + 1);
// Print the authenticated prompt
TCPPutROMString(MySocket, strAuthenticated);
TCPFlush(MySocket);
TelnetState = SM_AUTHENTICATED;
// No break
case SM_AUTHENTICATED:
break;
}
// Save session state back into the static array
hTelnetSockets[vTelnetSession] = MySocket;
vTelnetStates[vTelnetSession] = TelnetState;
}
}
