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reprapfirmware-dc42/Webserver.cpp
Adrian Bowyer dfeed15d53 Version 0.65c. The way that the Webserver class responds to a poll request
has been altered to send the X, Y, Z, and E coordinates first, followed by temperatures.
It was the other way round.  This led to compatibility problems between versions as
the experimental multiple tool versions (duet branch V0.70+) report many temperatures
and this was confusing the X Y Z stuff if the temps came first.  We can only realistically have one
live version of reprap.js (served from RepRapPro's Github to all running machines), so reprap.js
now expects coordinates first, and both this master version and all future master and experimental
versions will do that.
2014-05-08 21:17:14 +01:00

983 lines
24 KiB
C++

/****************************************************************************************************
RepRapFirmware - Webserver
This class serves a single-page web applications to the attached network. This page forms the user's
interface with the RepRap machine. This software interprests returned values from the page and uses it
to Generate G Codes, which it sends to the RepRap. It also collects values from the RepRap like
temperature and uses those to construct the web page.
The page itself - reprap.htm - uses Knockout.js and Jquery.js. See:
http://knockoutjs.com/
http://jquery.com/
-----------------------------------------------------------------------------------------------------
Version 0.2
10 May 2013
Adrian Bowyer
RepRap Professional Ltd
http://reprappro.com
Licence: GPL
****************************************************************************************************/
#include "RepRapFirmware.h"
//***************************************************************************************************
bool Webserver::MatchBoundary(char c)
{
if(!postBoundary[0])
return false;
if(c == postBoundary[boundaryCount])
{
boundaryCount++;
if(!postBoundary[boundaryCount])
{
boundaryCount = 0;
return true;
}
} else
{
for(int i = 0; i < boundaryCount; i++)
postFile->Write(postBoundary[i]);
postFile->Write(c);
boundaryCount = 0;
}
return false;
}
//****************************************************************************************************
// Feeding G Codes to the GCodes class
bool Webserver::GCodeAvailable()
{
return gcodeReadIndex != gcodeWriteIndex;
}
byte Webserver::ReadGCode()
{
byte c;
if (gcodeReadIndex == gcodeWriteIndex)
{
c = 0;
}
else
{
c = gcodeBuffer[gcodeReadIndex];
gcodeReadIndex = (gcodeReadIndex + 1u) % gcodeBufLength;
}
return c;
}
// Process a received string of gcodes
void Webserver::LoadGcodeBuffer(const char* gc, bool convertWeb)
{
char gcodeTempBuf[GCODE_LENGTH];
uint16_t gtp = 0;
bool inComment = false;
for (;;)
{
char c = *gc++;
if(c == 0)
{
gcodeTempBuf[gtp] = 0;
ProcessGcode(gcodeTempBuf);
return;
}
if(c == '+' && convertWeb)
{
c = ' ';
}
else if(c == '%' && convertWeb)
{
c = *gc++;
if(c != 0)
{
unsigned char uc;
if(isalpha(c))
{
uc = 16*(c - 'A' + 10);
}
else
{
uc = 16*(c - '0');
}
c = *gc++;
if(c != 0)
{
if(isalpha(c))
{
uc += c - 'A' + 10;
}
else
{
uc += c - '0';
}
c = uc;
}
}
}
if (c == '\n')
{
gcodeTempBuf[gtp] = 0;
ProcessGcode(gcodeTempBuf);
gtp = 0;
inComment = false;
}
else
{
if (c == ';')
{
inComment = true;
}
if(gtp == ARRAY_SIZE(gcodeTempBuf) - 1)
{
// gcode is too long, we haven't room for another character and a null
if (c != ' ' && !inComment)
{
platform->Message(HOST_MESSAGE, "Webserver: GCode local buffer overflow.\n");
HandleReply("Webserver: GCode local buffer overflow", true);
return;
}
// else we're either in a comment or the current character is a space.
// If we're in a comment, we'll silently truncate it.
// If the current character is a space, we'll wait until we see a non-comment character before reporting an error,
// in case the next character is end-of-line or the start of a comment.
}
else
{
gcodeTempBuf[gtp++] = c;
}
}
}
}
// Process a null-terminated gcode
// We intercept four G/M Codes so we can deal with file manipulation and emergencies. That
// way things don't get out of sync, and - as a file name can contain
// a valid G code (!) - confusion is avoided.
void Webserver::ProcessGcode(const char* gc)
{
int8_t specialAction = 0;
if(StringStartsWith(gc, "M30 "))
{
specialAction = 1;
}
else if(StringStartsWith(gc, "M23 "))
{
specialAction = 2;
}
else if(StringStartsWith(gc, "M112") && !isdigit(gc[4]))
{
specialAction = 3;
}
else if(StringStartsWith(gc, "M503") && !isdigit(gc[4]))
{
specialAction = 4;
}
if(specialAction != 0) // Delete or print a file?
{
switch (specialAction)
{
case 1: // Delete
reprap.GetGCodes()->DeleteFile(&gc[4]);
break;
case 2: // print
reprap.GetGCodes()->QueueFileToPrint(&gc[4]);
break;
case 3:
reprap.EmergencyStop();
break;
case 4:
{
FileStore *configFile = platform->GetFileStore(platform->GetSysDir(), platform->GetConfigFile(), false);
if(configFile == NULL)
{
HandleReply("Configuration file not found", true);
}
else
{
char c;
size_t i = 0;
while(i < STRING_LENGTH && configFile->Read(c))
{
gcodeReply[i++] = c;
}
configFile->Close();
gcodeReply[i] = 0;
++seq;
}
}
break;
}
}
else
{
// Copy the gcode to the buffer
size_t len = strlen(gc) + 1; // number of characters to copy
if (len > GetGcodeBufferSpace())
{
platform->Message(HOST_MESSAGE, "Webserver: GCode buffer overflow.\n");
HandleReply("Webserver: GCode buffer overflow", true);
}
else
{
size_t remaining = gcodeBufLength - gcodeWriteIndex;
if (len <= remaining)
{
memcpy(&gcodeBuffer[gcodeWriteIndex], gc, len);
}
else
{
memcpy(&gcodeBuffer[gcodeWriteIndex], gc, remaining);
memcpy(gcodeBuffer, gc + remaining, len - remaining);
}
gcodeWriteIndex = (gcodeWriteIndex + len) % gcodeBufLength;
}
}
}
//********************************************************************************************
// Communications with the client
//--------------------------------------------------------------------------------------------
// Output to the client
void Webserver::CloseClient()
{
writing = false;
//inPHPFile = false;
//InitialisePHP();
clientCloseTime = platform->Time();
needToCloseClient = true;
}
void Webserver::SendFile(const char* nameOfFileToSend)
{
char sLen[SHORT_STRING_LENGTH];
bool zip = false;
if(StringStartsWith(nameOfFileToSend, KO_START))
GetJsonResponse(&nameOfFileToSend[KO_FIRST]);
if(jsonPointer < 0)
{
fileBeingSent = platform->GetFileStore(platform->GetWebDir(), nameOfFileToSend, false);
if(fileBeingSent == NULL)
{
nameOfFileToSend = FOUR04_FILE;
fileBeingSent = platform->GetFileStore(platform->GetWebDir(), nameOfFileToSend, false);
}
writing = (fileBeingSent != NULL);
}
Network *net = platform->GetNetwork();
net->Write("HTTP/1.1 200 OK\n");
net->Write("Content-Type: ");
if(StringEndsWith(nameOfFileToSend, ".png"))
net->Write("image/png\n");
else if(StringEndsWith(nameOfFileToSend, ".ico"))
net->Write("image/x-icon\n");
else if (jsonPointer >= 0)
net->Write("application/json\n");
else if(StringEndsWith(nameOfFileToSend, ".js"))
net->Write("application/javascript\n");
else if(StringEndsWith(nameOfFileToSend, ".css"))
net->Write("text/css\n");
else if(StringEndsWith(nameOfFileToSend, ".htm") || StringEndsWith(nameOfFileToSend, ".html"))
net->Write("text/html\n");
else if(StringEndsWith(nameOfFileToSend, ".zip"))
{
net->Write("application/zip\n");
zip = true;
} else
net->Write("application/octet-stream\n");
if (jsonPointer >=0)
{
net->Write("Content-Length: ");
snprintf(sLen, SHORT_STRING_LENGTH, "%d", strlen(jsonResponse));
net->Write(sLen);
net->Write("\n");
}
if(zip)
{
net->Write("Content-Encoding: gzip\n");
net->Write("Content-Length: ");
snprintf(sLen, SHORT_STRING_LENGTH, "%llu", fileBeingSent->Length());
net->Write(sLen);
net->Write("\n");
}
net->Write("Connection: close\n");
net->Write('\n');
}
// Write a number of bytes if we can, returning true if we wrote anything
bool Webserver::WriteBytes()
{
Network *net = platform->GetNetwork();
uint8_t i;
for (i = 0; i < 50 && writing && net->CanWrite(); )
{
++i;
if(jsonPointer >= 0)
{
if(jsonResponse[jsonPointer])
{
net->Write(jsonResponse[jsonPointer++]);
}
else
{
jsonPointer = -1;
jsonResponse[0] = 0;
CloseClient();
break;
}
} else
{
char b;
if(fileBeingSent->Read(b))
{
net->Write(b);
}
else
{
fileBeingSent->Close();
CloseClient();
break;
}
}
}
return i != 0;
}
//----------------------------------------------------------------------------------------------------
// Input from the client
void Webserver::CheckPassword()
{
gotPassword = StringEndsWith(clientQualifier, password);
}
void Webserver::JsonReport(bool ok, const char* request)
{
if(ok)
{
if(reprap.Debug())
{
platform->Message(HOST_MESSAGE, "JSON response: ");
platform->Message(HOST_MESSAGE, jsonResponse);
platform->Message(HOST_MESSAGE, " queued\n");
}
} else
{
platform->Message(HOST_MESSAGE, "KnockOut request: ");
platform->Message(HOST_MESSAGE, request);
platform->Message(HOST_MESSAGE, " not recognised\n");
clientRequest[0] = 0;
}
}
void Webserver::GetJsonResponse(const char* request)
{
jsonPointer = 0;
writing = true;
if(StringStartsWith(request, "poll"))
{
strncpy(jsonResponse, "{\"poll\":[", STRING_LENGTH);
if(reprap.GetGCodes()->PrintingAFile())
strncat(jsonResponse, "\"P\",", STRING_LENGTH); // Printing
else
strncat(jsonResponse, "\"I\",", STRING_LENGTH); // Idle
float liveCoordinates[DRIVES+1];
reprap.GetMove()->LiveCoordinates(liveCoordinates);
for(int8_t drive = 0; drive < AXES; drive++)
{
strncat(jsonResponse, "\"", STRING_LENGTH);
strncat(jsonResponse, ftoa(0, liveCoordinates[drive], 2), STRING_LENGTH);
strncat(jsonResponse, "\",", STRING_LENGTH);
}
// FIXME: should loop through all Es
strncat(jsonResponse, "\"", STRING_LENGTH);
strncat(jsonResponse, ftoa(0, liveCoordinates[AXES], 4), STRING_LENGTH);
strncat(jsonResponse, "\",", STRING_LENGTH);
for(int8_t heater = 0; heater < HEATERS; heater++)
{
strncat(jsonResponse, "\"", STRING_LENGTH);
strncat(jsonResponse, ftoa(0, reprap.GetHeat()->GetTemperature(heater), 1), STRING_LENGTH);
if(heater < HEATERS - 1)
strncat(jsonResponse, "\",", STRING_LENGTH);
else
strncat(jsonResponse, "\"", STRING_LENGTH);
}
strncat(jsonResponse, "]", STRING_LENGTH);
// Send the Z probe value
char scratch[SHORT_STRING_LENGTH+1];
scratch[SHORT_STRING_LENGTH] = 0;
if (platform->GetZProbeType() == 2)
{
snprintf(scratch, SHORT_STRING_LENGTH, ",\"probe\":\"%d (%d)\"", (int)platform->ZProbe(), platform->ZProbeOnVal());
}
else
{
snprintf(scratch, SHORT_STRING_LENGTH, ",\"probe\":\"%d\"", (int)platform->ZProbe());
}
strncat(jsonResponse, scratch, STRING_LENGTH);
// Send the amount of buffer space available for gcodes
snprintf(scratch, SHORT_STRING_LENGTH, ",\"buff\":%u", GetReportedGcodeBufferSpace());
strncat(jsonResponse, scratch, STRING_LENGTH);
// Send the home state. To keep the messages short, we send 1 for homed and 0 for not homed, instead of true and false.
strncat(jsonResponse, ",\"hx\":", STRING_LENGTH);
strncat(jsonResponse, (reprap.GetGCodes()->GetAxisIsHomed(0)) ? "1" : "0", STRING_LENGTH);
strncat(jsonResponse, ",\"hy\":", STRING_LENGTH);
strncat(jsonResponse, (reprap.GetGCodes()->GetAxisIsHomed(1)) ? "1" : "0", STRING_LENGTH);
strncat(jsonResponse, ",\"hz\":", STRING_LENGTH);
strncat(jsonResponse, (reprap.GetGCodes()->GetAxisIsHomed(2)) ? "1" : "0", STRING_LENGTH);
// Send the response sequence number
strncat(jsonResponse, ",\"seq\":", STRING_LENGTH);
snprintf(scratch, SHORT_STRING_LENGTH, "%u", (unsigned int)seq);
strncat(jsonResponse, scratch, STRING_LENGTH);
// Send the response to the last command. Do this last because it is long and may need to be truncated.
strncat(jsonResponse, ",\"resp\":\"", STRING_LENGTH);
size_t jp = strnlen(jsonResponse, STRING_LENGTH);
const char *p = gcodeReply;
while (*p != 0 && jp < STRING_LENGTH - 2) // leave room for the final '"}'
{
char c = *p++;
char esc;
switch(c)
{
case '\r':
esc = 'r'; break;
case '\n':
esc = 'n'; break;
case '\t':
esc = 't'; break;
case '"':
esc = '"'; break;
case '\\':
esc = '\\'; break;
default:
esc = 0; break;
}
if (esc)
{
if (jp == STRING_LENGTH - 3)
break;
jsonResponse[jp++] = '\\';
jsonResponse[jp++] = esc;
}
else
{
jsonResponse[jp++] = c;
}
}
strncat(jsonResponse, "\"}", STRING_LENGTH);
jsonResponse[STRING_LENGTH] = 0;
JsonReport(true, request);
return;
}
if(StringStartsWith(request, "gcode"))
{
LoadGcodeBuffer(&clientQualifier[6], true);
char scratch[SHORT_STRING_LENGTH+1];
scratch[SHORT_STRING_LENGTH] = 0;
snprintf(scratch, SHORT_STRING_LENGTH, "{\"buff\":%u}", GetReportedGcodeBufferSpace());
strncat(jsonResponse, scratch, STRING_LENGTH);
JsonReport(true, request);
return;
}
if(StringStartsWith(request, "files"))
{
char* fileList = platform->GetMassStorage()->FileList(platform->GetGCodeDir(), false);
strncpy(jsonResponse, "{\"files\":[", STRING_LENGTH);
strncat(jsonResponse, fileList, STRING_LENGTH);
strncat(jsonResponse, "]}", STRING_LENGTH);
JsonReport(true, request);
return;
}
if(StringStartsWith(request, "name"))
{
strncpy(jsonResponse, "{\"myName\":\"", STRING_LENGTH);
strncat(jsonResponse, myName, STRING_LENGTH);
strncat(jsonResponse, "\"}", STRING_LENGTH);
JsonReport(true, request);
return;
}
if(StringStartsWith(request, "password"))
{
CheckPassword();
strncpy(jsonResponse, "{\"password\":\"", STRING_LENGTH);
if(gotPassword)
strncat(jsonResponse, "right", STRING_LENGTH);
else
strncat(jsonResponse, "wrong", STRING_LENGTH);
strncat(jsonResponse, "\"}", STRING_LENGTH);
JsonReport(true, request);
return;
}
if(StringStartsWith(request, "axes"))
{
strncpy(jsonResponse, "{\"axes\":[", STRING_LENGTH);
for(int8_t drive = 0; drive < AXES; drive++)
{
strncat(jsonResponse, "\"", STRING_LENGTH);
strncat(jsonResponse, ftoa(0, platform->AxisLength(drive), 1), STRING_LENGTH);
if(drive < AXES-1)
strncat(jsonResponse, "\",", STRING_LENGTH);
else
strncat(jsonResponse, "\"", STRING_LENGTH);
}
strncat(jsonResponse, "]}", STRING_LENGTH);
JsonReport(true, request);
return;
}
JsonReport(false, request);
}
/*
Parse a string in clientLine[] from the user's web browser
Simple requests have the form:
GET /page2.htm HTTP/1.1
^ Start clientRequest[] at clientLine[5]; stop at the blank or...
...fancier ones with arguments after a '?' go:
GET /gather.asp?pwd=my_pwd HTTP/1.1
^ Start clientRequest[]
^ Start clientQualifier[]
*/
void Webserver::ParseGetPost()
{
if(reprap.Debug())
{
platform->Message(HOST_MESSAGE, "HTTP request: ");
platform->Message(HOST_MESSAGE, clientLine);
platform->Message(HOST_MESSAGE, "\n");
}
int i = 5;
int j = 0;
clientRequest[j] = 0;
clientQualifier[0] = 0;
while(clientLine[i] != ' ' && clientLine[i] != '?')
{
clientRequest[j] = clientLine[i];
j++;
i++;
}
clientRequest[j] = 0;
if(clientLine[i] == '?')
{
i++;
j = 0;
while(clientLine[i] != ' ')
{
clientQualifier[j] = clientLine[i];
j++;
i++;
}
clientQualifier[j] = 0;
}
}
void Webserver::InitialisePost()
{
postSeen = false;
receivingPost = false;
boundaryCount = 0;
postBoundary[0] = 0;
postFileName[0] = 0;
postFile = NULL;
}
void Webserver::ParseClientLine()
{
if(StringStartsWith(clientLine, "GET"))
{
ParseGetPost();
postSeen = false;
getSeen = true;
if(!clientRequest[0])
strncpy(clientRequest, INDEX_PAGE, STRING_LENGTH);
return;
}
if(StringStartsWith(clientLine, "POST"))
{
ParseGetPost();
InitialisePost();
postSeen = true;
getSeen = false;
if(!clientRequest[0])
strncpy(clientRequest, INDEX_PAGE, STRING_LENGTH);
return;
}
int bnd;
if(postSeen && ( (bnd = StringContains(clientLine, "boundary=")) >= 0) )
{
if(strlen(&clientLine[bnd]) >= POST_LENGTH - 4)
{
platform->Message(HOST_MESSAGE, "Post boundary buffer overflow.\n");
return;
}
postBoundary[0] = '-';
postBoundary[1] = '-';
strncpy(&postBoundary[2], &clientLine[bnd], POST_LENGTH - 3);
strncat(postBoundary, "--", POST_LENGTH);
//Serial.print("Got boundary: ");
//Serial.println(postBoundary);
return;
}
if(receivingPost && StringStartsWith(clientLine, "Content-Disposition:"))
{
bnd = StringContains(clientLine, "filename=\"");
if(bnd < 0)
{
platform->Message(HOST_MESSAGE, "Post disposition gives no filename.\n");
return;
}
int i = 0;
while(clientLine[bnd] && clientLine[bnd] != '"')
{
postFileName[i++] = clientLine[bnd++];
if(i >= POST_LENGTH)
{
i = 0;
platform->Message(HOST_MESSAGE, "Post filename buffer overflow.\n");
}
}
postFileName[i] = 0;
//Serial.print("Got file name: ");
//Serial.println(postFileName);
return;
}
}
// if you've gotten to the end of the line (received a newline
// character) and the line is blank, the http request has ended,
// so you can send a reply
void Webserver::BlankLineFromClient()
{
clientLine[clientLinePointer] = 0;
clientLinePointer = 0;
//ParseQualifier();
//Serial.println("End of header.");
// Soak up any rubbish on the end.
char c;
while(platform->GetNetwork()->Read(c));
if(getSeen)
{
SendFile(clientRequest);
clientRequest[0] = 0;
return;
}
if(postSeen)
{
receivingPost = true;
postSeen = false;
return;
}
if(receivingPost)
{
postFile = platform->GetFileStore(platform->GetGCodeDir(), postFileName, true);
if(postFile == NULL || !postBoundary[0])
{
platform->Message(HOST_MESSAGE, "Can't open file for write or no post boundary: ");
platform->Message(HOST_MESSAGE, postFileName);
platform->Message(HOST_MESSAGE, "\n");
InitialisePost();
if(postFile != NULL)
postFile->Close();
}
}
}
// Process a character from the client, returning true if we did more than just store it
bool Webserver::CharFromClient(char c)
{
if(c == '\n' && clientLineIsBlank)
{
BlankLineFromClient();
return true;
}
if(c == '\n')
{
clientLine[clientLinePointer] = 0;
ParseClientLine();
// you're starting a new line
clientLineIsBlank = true;
clientLinePointer = 0;
return true;
} else if(c != '\r')
{
// you've gotten a character on the current line
clientLineIsBlank = false;
clientLine[clientLinePointer] = c;
clientLinePointer++;
if(clientLinePointer >= STRING_LENGTH)
{
platform->Message(HOST_MESSAGE, "Client read buffer overflow. Data:\n");
clientLine[STRING_LENGTH] = '\n'; // note that clientLine is now STRING_LENGTH+2 characters long to make room for these
clientLine[STRING_LENGTH+1] = 0;
platform->Message(HOST_MESSAGE, clientLine);
clientLinePointer = 0;
clientLine[clientLinePointer] = 0;
clientLineIsBlank = true;
return true;
}
}
return false;
}
// Deal with input/output from/to the client (if any) one byte at a time.
void Webserver::Spin()
{
//char sw[2];
if(!active)
return;
if(writing)
{
// if(inPHPFile)
// WritePHPByte();
// else
if (WriteBytes()) // if we wrote something
{
platform->ClassReport("Webserver", longWait);
return;
}
}
if(platform->GetNetwork()->Active())
{
for(uint8_t i = 0;
i < 16 && (platform->GetNetwork()->Status() & (clientConnected | byteAvailable)) == (clientConnected | byteAvailable);
++i)
{
char c;
platform->GetNetwork()->Read(c);
//SerialUSB.print(c);
if(receivingPost && postFile != NULL)
{
if(MatchBoundary(c))
{
//Serial.println("Got to end of file.");
postFile->Close();
SendFile(clientRequest);
clientRequest[0] = 0;
InitialisePost();
}
platform->ClassReport("Webserver", longWait);
return;
}
if (CharFromClient(c))
break; // break if we did more than just store the character
}
}
if (platform->GetNetwork()->Status() & clientLive)
{
if(needToCloseClient)
{
if(platform->Time() - clientCloseTime < CLIENT_CLOSE_DELAY)
{
platform->ClassReport("Webserver", longWait);
return;
}
needToCloseClient = false;
platform->GetNetwork()->Close();
}
}
platform->ClassReport("Webserver", longWait);
}
//******************************************************************************************
// Constructor and initialisation
Webserver::Webserver(Platform* p)
{
platform = p;
active = false;
gotPassword = false;
}
void Webserver::Init()
{
writing = false;
receivingPost = false;
postSeen = false;
getSeen = false;
jsonPointer = -1;
clientLineIsBlank = true;
needToCloseClient = false;
clientLinePointer = 0;
clientLine[0] = 0;
clientRequest[0] = 0;
SetPassword(DEFAULT_PASSWORD);
SetName(DEFAULT_NAME);
//gotPassword = false;
gcodeReadIndex = gcodeWriteIndex = 0;
InitialisePost();
lastTime = platform->Time();
longWait = lastTime;
active = true;
gcodeReply[0] = 0;
seq = 0;
// Reinitialise the message file
//platform->GetMassStorage()->Delete(platform->GetWebDir(), MESSAGE_FILE);
}
// This is called when the connection has been lost.
// In particular, we must cancel any pending writes.
void Webserver::ConnectionError()
{
writing = false;
receivingPost = false;
postSeen = false;
getSeen = false;
jsonPointer = -1;
clientLineIsBlank = true;
needToCloseClient = false;
clientLinePointer = 0;
clientLine[0] = 0;
clientRequest[0] = 0;
gotPassword = false;
gcodeReadIndex = gcodeWriteIndex = 0;
InitialisePost();
lastTime = platform->Time();
longWait = lastTime;
active = true;
}
void Webserver::Exit()
{
platform->Message(HOST_MESSAGE, "Webserver class exited.\n");
active = false;
}
void Webserver::Diagnostics()
{
platform->Message(HOST_MESSAGE, "Webserver Diagnostics:\n");
}
void Webserver::SetPassword(const char* pw)
{
strncpy(password, pw, SHORT_STRING_LENGTH);
password[SHORT_STRING_LENGTH] = 0; // NB array is dimensioned to SHORT_STRING_LENGTH+1
}
void Webserver::SetName(const char* nm)
{
strncpy(myName, nm, SHORT_STRING_LENGTH);
myName[SHORT_STRING_LENGTH] = 0; // NB array is dimensioned to SHORT_STRING_LENGTH+1
}
void Webserver::HandleReply(const char *s, bool error)
{
if (strlen(s) == 0 && !error)
{
strcpy(gcodeReply, "ok");
}
else
{
if (error)
{
strcpy(gcodeReply, "Error: ");
strncat(gcodeReply, s, STRING_LENGTH);
}
else
{
strncpy(gcodeReply, s, STRING_LENGTH);
}
gcodeReply[STRING_LENGTH] = 0; // array is dimensioned to STRING_LENGTH+1
}
++seq;
}
void Webserver::AppendReply(const char *s)
{
strncat(gcodeReply, s, STRING_LENGTH);
}
// Get the actual amount of gcode buffer space we have
unsigned int Webserver::GetGcodeBufferSpace() const
{
return (gcodeReadIndex - gcodeWriteIndex - 1u) % gcodeBufLength;
}
// Get the amount of gcode buffer space we are going to report
unsigned int Webserver::GetReportedGcodeBufferSpace() const
{
unsigned int temp = GetGcodeBufferSpace();
return (temp > maxReportedFreeBuf) ? maxReportedFreeBuf
: (temp < minReportedFreeBuf) ? 0
: temp;
}