/**************************************************************************************************** RepRapFirmware - Webserver This class serves web pages to the attached network. These pages form the user's interface with the RepRap machine. It interprests returned values from those pages and uses them 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 pages. ----------------------------------------------------------------------------------------------------- Version 0.1 13 February 2013 Adrian Bowyer RepRap Professional Ltd http://reprappro.com Licence: GPL ****************************************************************************************************/ #include "RepRapFirmware.h" Webserver::Webserver(Platform* p) { Serial.println("Webserver constructor"); platform = p; lastTime = platform->time(); writing = false; clientLineIsBlank = true; needToCloseClient = false; clientLinePointer = 0; clientLine[0] = 0; clientRequest[0] = 0; password = DEFAULT_PASSWORD; myName = DEFAULT_NAME; gotPassword = false; gcodeAvailable = false; gcodePointer = 0; } boolean Webserver::Available() { return gcodeAvailable; } byte Webserver::Read() { byte c = gcodeBuffer[gcodePointer]; if(!c) { gcodeAvailable = false; gcodePointer = 0; gcodeBuffer[gcodePointer] = 0; } else gcodePointer++; return c; } boolean Webserver::LoadGcodeBuffer(char* gc, boolean convertWeb) { if(gcodeAvailable) return false; if(strlen(gc) > GCODE_LENGTH-1) { platform->Message(HOST_MESSAGE, "Webserver: GCode buffer overflow.\n"); return false; } int gcp = 0; gcodePointer = 0; gcodeBuffer[gcodePointer] = 0; char c; while(c = gc[gcp++]) { if(c == '+' && convertWeb) c = ' '; if(c == '%'&& convertWeb) // FIXME - just convert the next two hex bytes to a char { if(StringStartsWith(&gc[gcp], "2B")) c = '+'; else if(StringStartsWith(&gc[gcp], "20")) c = ' '; else { platform->Message(HOST_MESSAGE, "Webserver: Dud web-form byte: "); platform->Message(HOST_MESSAGE, gc); platform->Message(HOST_MESSAGE, "\n"); } gcp += 2; } gcodeBuffer[gcodePointer++] = c; } gcodeBuffer[gcodePointer] = 0; gcodePointer = 0; gcodeAvailable = true; return true; } boolean Webserver::StringEndsWith(char* string, char* ending) { int j = strlen(string); int k = strlen(ending); if(k > j) return false; return(!strcmp(&string[j - k], ending)); } boolean Webserver::StringStartsWith(char* string, char* starting) { int j = strlen(string); int k = strlen(starting); if(k > j) return false; for(int i = 0; i < k; i++) if(string[i] != starting[i]) return false; return true; } void Webserver::InternalHead(boolean sendTab, int noLink) { platform->SendToClient("\n

RepRap: "); platform->SendToClient(myName); if(gotPassword) platform->SendToClient(" $\"RepRapPro$ "); platform->SendToClient("

"); if(sendTab) { platform->SendToClient(""); // border=\"1\" if(noLink == 0) platform->SendToClient(""); else platform->SendToClient(""); if(noLink == 1) platform->SendToClient(""); else platform->SendToClient(""); platform->SendToClient(""); if(noLink == 3) platform->SendToClient(""); else platform->SendToClient(""); platform->SendToClient(""); platform->SendToClient("

Control

Help

Settings

Logout

"); } platform->SendToClient("

"); } void Webserver::CloseClient() { writing = false; clientCloseTime = platform->time(); needToCloseClient = true; } void Webserver::InternalTail() { platform->SendToClient("

\n"); CloseClient(); } void Webserver::SendControlPage() { InternalHead(true, 0); platform->SendToClient(""); platform->SendToClient("

\n"); platform->SendToClient(""); InternalTail(); } void Webserver::SendPrintPage() { InternalHead(true, 1); platform->SendToClient("Print Page\n"); InternalTail(); } void Webserver::SendHelpPage() { InternalHead(true, 2); platform->SendToClient("Help Page"); InternalTail(); } void Webserver::SendSettingsPage() { InternalHead(true, 3); platform->SendToClient("Settings Page"); InternalTail(); } void Webserver::SendLogoutPage() { gotPassword = false; SendPasswordPage(); } void Webserver::SendPasswordPage() { InternalHead(false, -1); platform->SendToClient("

Password: "); InternalTail(); } void Webserver::Send404Page() { InternalHead(false, -1); platform->SendToClient("

404 Error: page not found.

"); InternalTail(); } boolean Webserver::InternalFile(char* nameOfFileToSend) { if(StringStartsWith(nameOfFileToSend, "index.htm") || StringStartsWith(nameOfFileToSend, "control.htm")) { SendControlPage(); return true; } if(StringStartsWith(nameOfFileToSend, "print.htm")) { SendPrintPage(); return true; } if(StringStartsWith(nameOfFileToSend, "help.htm")) { SendHelpPage(); return true; } if(StringStartsWith(nameOfFileToSend, "settings.htm")) { SendSettingsPage(); return true; } if(StringStartsWith(nameOfFileToSend, "logout.htm")) { SendLogoutPage(); return true; } if(StringStartsWith(nameOfFileToSend, "passwd.htm")) { SendPasswordPage(); return true; } if(StringStartsWith(nameOfFileToSend, "html404.htm")) { Send404Page(); return true; } return false; } void Webserver::SendFile(char* nameOfFileToSend) { if(!gotPassword) nameOfFileToSend = PASSWORD_PAGE; platform->SendToClient("HTTP/1.1 200 OK\n"); if(StringEndsWith(nameOfFileToSend, ".png")) platform->SendToClient("Content-Type: image/png\n"); else platform->SendToClient("Content-Type: text/html\n"); platform->SendToClient("Connnection: close\n"); // if(loadingImage) // { // platform->SendToHost("Cache-Control: max-age=3600\n"); // Serial.println("Image requested"); // } platform->SendToClient('\n'); if(InternalFile(nameOfFileToSend)) return; //Serial.print("File requested: "); //Serial.println(nameOfFileToSend); fileBeingSent = platform->OpenFile(nameOfFileToSend, false); if(fileBeingSent < 0) { InternalFile("html404.htm"); return; } writing = true; } void Webserver::WriteByte() { unsigned char b; if(platform->Read(fileBeingSent, b)) platform->SendToClient(b); else { platform->Close(fileBeingSent); CloseClient(); } } /* 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::ParseClientLine() { if(!StringStartsWith(clientLine, "GET")) return; 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; } if(!clientRequest[0]) strcpy(clientRequest, "index.htm"); } void Webserver::CheckPassword() { if(!StringEndsWith(clientQualifier, password)) return; gotPassword = true; strcpy(clientRequest, "index.htm"); } void Webserver::ParseQualifier() { if(!clientQualifier[0]) return; if(StringStartsWith(clientQualifier, "pwd=")) CheckPassword(); if(StringStartsWith(clientQualifier, "gcode=")) { if(!LoadGcodeBuffer(&clientQualifier[6], true)) platform->Message(HOST_MESSAGE, "Webserver: buffer not free!"); strcpy(clientRequest, "index.htm"); // FIXME } } void Webserver::spin() { if(writing) { WriteByte(); return; } if(platform->ClientStatus() & CONNECTED) { if (platform->ClientStatus() & AVAILABLE) { char c = platform->ClientRead(); Serial.write(c); // 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 if (c == '\n' && clientLineIsBlank) { clientLine[clientLinePointer] = 0; clientLinePointer = 0; ParseQualifier(); SendFile(clientRequest); clientRequest[0] = 0; return; } if (c == '\n') { clientLine[clientLinePointer] = 0; ParseClientLine(); // you're starting a new line clientLineIsBlank = true; clientLinePointer = 0; } else if (c != '\r') { // you've gotten a character on the current line clientLineIsBlank = false; clientLine[clientLinePointer] = c; clientLinePointer++; } } //return; } if (platform->ClientStatus() & CLIENT) { if(needToCloseClient) { if(platform->time() - clientCloseTime < CLIENT_CLOSE_DELAY) return; needToCloseClient = false; platform->DisconnectClient(); } } }

RepRap: "); platform->SendToClient(myName); if(gotPassword) platform->SendToClient(" "); platform->SendToClient("

404 Error: page not found.

RepRap: "); platform->SendToClient(myName); if(gotPassword) platform->SendToClient(" $\"RepRapPro$ "); platform->SendToClient("