Fonctions communes aux programmes Nucleo Web ENC28J60...
Dependents: Nucleo_Web_ENC28J60 Nucleo_Web_ENC28J60_ADC
Fct_Web.h
- Committer:
- Fo170
- Date:
- 2015-09-28
- Revision:
- 2:ba0105da75cd
- Parent:
- 1:b52ad028c502
File content as of revision 2:ba0105da75cd:
const uint16_t MY_PORT = 80; // for HTTP connection EthernetServer myServer = EthernetServer(MY_PORT); string httpHeader; // HTTP header string httpContent; // HTTP content string& page(uint8_t status); // Declaration de la fonction page // analyse the url given // return values: -1 invalid password // -2 no command given but password valid // -3 just refresh page // 0 switch off // 1 switch on // // The string passed to this function will look like this: // GET /password HTTP/1..... // GET /password/ HTTP/1..... // GET /password/?sw=1 HTTP/1..... // GET /password/?sw=0 HTTP/1..... int8_t analyse_get_url(string& str) { if(str.substr(5, PASSWORD.size()) != PASSWORD) return(-1); uint8_t pos = 5 + PASSWORD.size(); if(str.substr(pos, 1) == " ") return(-2); if(str.substr(pos, 1) != "/") return(-1); pos++; string cmd(str.substr(pos, 5)); if(cmd == "?sw=0") return(OFF); if(cmd == "?sw=1") return(ON); return(-3); } string& moved_perm(uint8_t flag) { if(flag == 1) httpContent = "/" + PASSWORD + "/"; else httpContent = ""; httpContent += "<h1>301 Moved Permanently "; httpContent += str_moved_perm; httpContent += "</h1>\r\n"; return (httpContent); } string& page_toggle_switch(uint8_t status) { //------------- httpContent = str_DOCTYPE; httpContent += "<HTML><HEAD>\r\n"; httpContent += "<title>WEB Server Nucleo F411RE - ENC28J60 - Password Page</title>\r\n"; httpContent += "</HEAD><BODY><center>\r\n"; httpContent += "<h2>WEB Server Nucleo F411RE - ENC28J60 - Password Page</h2>\r\n<p>"; httpContent += str_image_Password_Folder; httpContent += "<p>\r\n"; if(status == 1) { httpContent += "<hr><pre>\r\n <font color=#00FF00>ON</font>"; httpContent += " <a href=\"./?sw=0\">[switch off]</a>"; httpContent += str_ampoule_OFF; httpContent += "\r\n"; } else { httpContent += "<hr><pre>\r\n <font color=#FF0000>OFF</font>"; httpContent += " <a href=\"./?sw=1\">[switch on]</a>"; httpContent += str_ampoule_ON; httpContent += "\r\n"; } httpContent += " <a href=\".\">[refresh status]</a>\r\n"; httpContent += "</pre>\r\n<hr>\r\n"; httpContent += "</center></BODY></HTML>"; //----------- //wait(1); return httpContent; } void http_send(EthernetClient& client, string& header, string& content) { char content_length[5] = {}; header += "\r\nContent-Type: text/html\r\n"; header += "Content-Length: "; sprintf(content_length, "%d", content.length()); header += string(content_length) + "\r\n"; header += "Pragma: no-cache\r\n"; header += "Connection: About to close\r\n"; header += "\r\n"; string webpage = header + content; client.write((uint8_t*)webpage.c_str(),webpage.length()); } void HTTP_LOOP(void) { //----------------- UIPEthernet.begin(MY_MAC,MY_IP); myServer.begin(); //----BEGIN WHILE----------- while(1) { EthernetClient client = myServer.available(); if(client) { size_t size = client.available(); if(size > 0) { uint8_t* buf = (uint8_t*)malloc(size); size = client.read(buf, size); string received((char*)buf); free(buf); if(received.substr(0, 3) != "GET") { // head, post or other method // for possible status codes see: // http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html httpHeader = HTTP_OK; httpContent = "<h1>200 OK</h1>"; http_send(client, httpHeader, httpContent); continue; } if(received.substr(0, 6) == "GET / ") { httpHeader = HTTP_OK; // httpContent = "<p>Usage: http://host_or_ip/password</p>\r\n"; // http_send(client, httpHeader, httpContent); http_send(client, httpHeader, page(sw)); continue; } int cmd = analyse_get_url(received); if(cmd == -2) { // redirect to the right base url httpHeader = MOVED_PERM; http_send(client, httpHeader, moved_perm(1)); continue; } if(cmd == -1) { httpHeader = UNAUTHORIZED; httpContent = "<h1>401 Unauthorized "; httpContent = str_Unauthorized; httpContent += "</h1>\r\n"; http_send(client, httpHeader, httpContent); continue; } if(cmd == 1) { sw = 1; // switch on } if(cmd == 0) { sw = 0; // switch off } httpHeader = HTTP_OK; http_send(client, httpHeader, page_toggle_switch(sw)); } } } //----END WHILE----------- }