FOURNET Olivier
Fonctions communes aux programmes Nucleo Web ENC28J60...
Dependents: Nucleo_Web_ENC28J60 Nucleo_Web_ENC28J60_ADC
Embed:
(wiki syntax)
Show/hide line numbers
Fct_Web.h
00001 const uint16_t MY_PORT = 80; // for HTTP connection 00002 EthernetServer myServer = EthernetServer(MY_PORT); 00003 00004 string httpHeader; // HTTP header 00005 string httpContent; // HTTP content 00006 00007 string& page(uint8_t status); // Declaration de la fonction page 00008 00009 // analyse the url given 00010 // return values: -1 invalid password 00011 // -2 no command given but password valid 00012 // -3 just refresh page 00013 // 0 switch off 00014 // 1 switch on 00015 // 00016 // The string passed to this function will look like this: 00017 // GET /password HTTP/1..... 00018 // GET /password/ HTTP/1..... 00019 // GET /password/?sw=1 HTTP/1..... 00020 // GET /password/?sw=0 HTTP/1..... 00021 00022 int8_t analyse_get_url(string& str) 00023 { 00024 if(str.substr(5, PASSWORD.size()) != PASSWORD) 00025 return(-1); 00026 00027 uint8_t pos = 5 + PASSWORD.size(); 00028 00029 if(str.substr(pos, 1) == " ") return(-2); 00030 00031 if(str.substr(pos, 1) != "/") return(-1); 00032 00033 pos++; 00034 00035 string cmd(str.substr(pos, 5)); 00036 00037 if(cmd == "?sw=0") return(OFF); 00038 00039 if(cmd == "?sw=1") return(ON); 00040 00041 return(-3); 00042 } 00043 00044 00045 00046 string& moved_perm(uint8_t flag) 00047 { 00048 if(flag == 1) 00049 httpContent = "/" + PASSWORD + "/"; 00050 else 00051 httpContent = ""; 00052 00053 httpContent += "<h1>301 Moved Permanently "; 00054 httpContent += str_moved_perm; 00055 httpContent += "</h1>\r\n"; 00056 00057 return (httpContent); 00058 } 00059 00060 string& page_toggle_switch(uint8_t status) 00061 { 00062 //------------- 00063 httpContent = str_DOCTYPE; 00064 httpContent += "<HTML><HEAD>\r\n"; 00065 httpContent += "<title>WEB Server Nucleo F411RE - ENC28J60 - Password Page</title>\r\n"; 00066 httpContent += "</HEAD><BODY><center>\r\n"; 00067 httpContent += "<h2>WEB Server Nucleo F411RE - ENC28J60 - Password Page</h2>\r\n<p>"; 00068 httpContent += str_image_Password_Folder; 00069 httpContent += "<p>\r\n"; 00070 00071 if(status == 1) 00072 { 00073 httpContent += "<hr><pre>\r\n <font color=#00FF00>ON</font>"; 00074 httpContent += " <a href=\"./?sw=0\">[switch off]</a>"; 00075 httpContent += str_ampoule_OFF; 00076 httpContent += "\r\n"; 00077 } 00078 else 00079 { 00080 httpContent += "<hr><pre>\r\n <font color=#FF0000>OFF</font>"; 00081 httpContent += " <a href=\"./?sw=1\">[switch on]</a>"; 00082 httpContent += str_ampoule_ON; 00083 httpContent += "\r\n"; 00084 } 00085 00086 httpContent += " <a href=\".\">[refresh status]</a>\r\n"; 00087 httpContent += "</pre>\r\n<hr>\r\n"; 00088 00089 httpContent += "</center></BODY></HTML>"; 00090 //----------- 00091 //wait(1); 00092 return httpContent; 00093 } 00094 00095 void http_send(EthernetClient& client, string& header, string& content) 00096 { 00097 char content_length[5] = {}; 00098 00099 header += "\r\nContent-Type: text/html\r\n"; 00100 header += "Content-Length: "; 00101 sprintf(content_length, "%d", content.length()); 00102 header += string(content_length) + "\r\n"; 00103 header += "Pragma: no-cache\r\n"; 00104 header += "Connection: About to close\r\n"; 00105 header += "\r\n"; 00106 string webpage = header + content; 00107 client.write((uint8_t*)webpage.c_str(),webpage.length()); 00108 } 00109 00110 void HTTP_LOOP(void) 00111 { 00112 //----------------- 00113 UIPEthernet.begin(MY_MAC,MY_IP); 00114 myServer.begin(); 00115 //----BEGIN WHILE----------- 00116 while(1) 00117 { 00118 00119 EthernetClient client = myServer.available(); 00120 if(client) 00121 { 00122 size_t size = client.available(); 00123 if(size > 0) 00124 { 00125 uint8_t* buf = (uint8_t*)malloc(size); 00126 size = client.read(buf, size); 00127 string received((char*)buf); 00128 free(buf); 00129 if(received.substr(0, 3) != "GET") 00130 { 00131 // head, post or other method 00132 // for possible status codes see: 00133 // http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html 00134 httpHeader = HTTP_OK; 00135 httpContent = "<h1>200 OK</h1>"; 00136 http_send(client, httpHeader, httpContent); 00137 continue; 00138 } 00139 00140 if(received.substr(0, 6) == "GET / ") 00141 { 00142 httpHeader = HTTP_OK; 00143 // httpContent = "<p>Usage: http://host_or_ip/password</p>\r\n"; 00144 // http_send(client, httpHeader, httpContent); 00145 00146 http_send(client, httpHeader, page(sw)); 00147 continue; 00148 } 00149 00150 int cmd = analyse_get_url(received); 00151 00152 if(cmd == -2) 00153 { 00154 // redirect to the right base url 00155 httpHeader = MOVED_PERM; 00156 http_send(client, httpHeader, moved_perm(1)); 00157 continue; 00158 } 00159 00160 if(cmd == -1) 00161 { 00162 httpHeader = UNAUTHORIZED; 00163 httpContent = "<h1>401 Unauthorized "; 00164 httpContent = str_Unauthorized; 00165 httpContent += "</h1>\r\n"; 00166 00167 http_send(client, httpHeader, httpContent); 00168 continue; 00169 } 00170 00171 if(cmd == 1) 00172 { 00173 sw = 1; // switch on 00174 } 00175 00176 if(cmd == 0) 00177 { 00178 sw = 0; // switch off 00179 } 00180 00181 httpHeader = HTTP_OK; 00182 http_send(client, httpHeader, page_toggle_switch(sw)); 00183 } 00184 } 00185 00186 } 00187 //----END WHILE----------- 00188 }
Generated on Wed Jul 27 2022 02:21:18 by
1.7.2