Jack Hansdampf
/
WebSwitch_ENC28J60_GSOE
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Dependencies: UIPEthernet_GSOE
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main.cpp
00001 //nach Zoltan Houdek 00002 #include "mbed.h" 00003 #include <string> 00004 #include "UipEthernet.h" 00005 #include "TcpServer.h" 00006 #include "TcpClient.h" 00007 00008 //#define DEBUG 00009 // Static IP address must be unique and compatible with your network. 00010 #define IP "192.168.1.35" 00011 #define GATEWAY "192.168.1.1" 00012 #define NETMASK "255.255.255.0" 00013 #define PORT 80 00014 const uint8_t MAC[6] = { 0x00, 0x01, 0x02, 0x03, 0x04, 0x06 }; 00015 UipEthernet net(MAC, PB_15, PB_14, PB_13, PB_12); // mosi, miso, sck, cs 00016 TcpServer server; // Ethernet server 00017 TcpClient* client; 00018 char httpBuf[1500]; 00019 char httpHeader[256]; 00020 const int OFF = 0; 00021 const int ON = 1; 00022 DigitalOut output(PA_5); // A digital output to be switched on/off 00023 float roomTemp = 21.8f; // A temperature sensor output 00024 const char PASSWORD[] = "secret"; // Change as you like 00025 00026 /** 00027 * @brief Analyses the received URL 00028 * @note The string passed to this function will look like this: 00029 * GET /HTTP/1..... 00030 * GET /password HTTP/1..... 00031 * GET /password/ HTTP/1..... 00032 * GET /password/?sw=1 HTTP/1..... 00033 * GET /password/?sw=0 HTTP/1..... 00034 * @param url URL string 00035 * @retval -3 just refresh page 00036 * -2 no command given but password valid 00037 * -1 invalid password 00038 * 0 switch off 00039 * 1 switch on 00040 */ 00041 int8_t analyseURL(char* url) 00042 { 00043 return 1; 00044 uint8_t pos = 5; 00045 /* 00046 if (strlen(url) < (5 + strlen(PASSWORD) + 1)) 00047 return(-1); 00048 00049 //if (url.substr(5, PASSWORD.size()) != PASSWORD) 00050 if (strncmp(url + 5, PASSWORD, strlen(PASSWORD)) != 0) 00051 return(-1); 00052 00053 uint8_t pos = 5 + strlen(PASSWORD); 00054 00055 //if (url.substr(pos, 1) != "/") 00056 00057 if (*(url + pos) != '/') 00058 return(-1); 00059 00060 //if (url.substr(pos++, 1) == " ") 00061 if (*(url + pos++) == ' ') 00062 return(-2); 00063 */ 00064 //string cmd(url.substr(pos, 5)); 00065 *(url + pos + 5) = '\0'; // terminate the cmd string 00066 char* cmd = ((url + pos)); 00067 if (strcmp(cmd, "?sw=0") == 0) 00068 return(0); 00069 if (strcmp(cmd, "?sw=1") == 0) 00070 return(1); 00071 return(-3); 00072 } 00073 00074 /** 00075 * @brief 00076 * @note 00077 * @param 00078 * @retval 00079 */ 00080 char* movedPermanently(uint8_t flag) 00081 { 00082 memset(httpBuf, 0, sizeof(httpBuf)); 00083 if (flag == 1) { 00084 strcpy(httpBuf, "/"); 00085 strcat(httpBuf, PASSWORD); 00086 strcat(httpBuf, "/"); 00087 } 00088 00089 strcat(httpBuf, "<h1>301 Moved Permanently</h1>\r\n"); 00090 return(httpBuf); 00091 } 00092 00093 /** 00094 * @brief 00095 * @note 00096 * @param 00097 * @retval 00098 */ 00099 char* showWebPage(int status) 00100 { 00101 char roomTempStr[10] = { }; 00102 00103 //roomTemp = ds1820.read(); 00104 00105 sprintf(roomTempStr, "%3.1f", roomTemp); 00106 memset(httpBuf, 0, sizeof(httpBuf)); 00107 /*$off*/ 00108 strcat 00109 ( 00110 httpBuf, 00111 "<head>" 00112 "<meta charset=\"utf-8\">" 00113 "<meta name=\"viewport\" content=\" initial-scale=1.0; maximum-scale=1.0; minimum-scale=1.0; user-scalable=0;\"/>" 00114 "<title>Smart Home</title>" 00115 "<link href='http://fonts.googleapis.com/css?family=Droid+Sans&v1' rel='stylesheet' type='text/css'>" 00116 "<style>" 00117 ".switch {" 00118 "position: relative;" 00119 "display: inline-block;" 00120 "width: 60px;" 00121 "height: 34px;" 00122 "}" 00123 ".switch input {display:none;}" 00124 ".slider {" 00125 "position: absolute;" 00126 "cursor: pointer;" 00127 "top: 0;" 00128 "left: 0;" 00129 "right: 0;" 00130 "bottom: 0;" 00131 "border-radius: 34px;" 00132 "background-color: #ccc;" 00133 "-webkit-transition: .4s;" 00134 "transition: .4s;" 00135 "}" 00136 ".slider:before {" 00137 "position: absolute;" 00138 "content: \"\";" 00139 "height: 26px;" 00140 "width: 26px;" 00141 "left: 4px;" 00142 "bottom: 4px;" 00143 "border-radius: 50%;" 00144 "background-color: white;" 00145 "-webkit-transition: .4s;" 00146 "transition: .4s;" 00147 "}" 00148 "input:checked + .slider {" 00149 "background-color: #8ce196;" 00150 "}" 00151 "input:focus + .slider {" 00152 "box-shadow: 0 0 1px #8ce196;" 00153 "}" 00154 "input:checked + .slider:before {" 00155 "-webkit-transform: translateX(26px);" 00156 "-ms-transform: translateX(26px);" 00157 "transform: translateX(26px);" 00158 "}" 00159 "</style>" 00160 "</head>" 00161 00162 "<body>" 00163 "<h2><a href=\".\" title=\"Click to refresh the page\">Smart Home</a></h2>" 00164 "<pre>Temperature:\t" 00165 ); 00166 strcat(httpBuf, roomTempStr); 00167 strcat(httpBuf, "°C</pre>"); 00168 strcat 00169 ( 00170 httpBuf, 00171 "<pre>Heating:\t" 00172 ); 00173 if(status == ON) { 00174 strcat 00175 ( 00176 httpBuf, 00177 "<a href=\"./?sw=0\" class=\"switch\"> " 00178 "<input type=\"checkbox\" checked>" 00179 ); 00180 } 00181 else { 00182 strcat 00183 ( 00184 httpBuf, 00185 "<a href=\"./?sw=1\" class=\"switch\"> " 00186 "<input type=\"checkbox\">" 00187 ); 00188 } 00189 strcat 00190 ( 00191 httpBuf, 00192 "<div class=\"slider\"></div>" 00193 "</a>" 00194 "</pre>" 00195 "<hr>" 00196 "<pre>2017 ARMmbed</pre>" 00197 "</body>" 00198 ); 00199 /*$on*/ 00200 return httpBuf; 00201 } 00202 00203 /** 00204 * @brief 00205 * @note 00206 * @param 00207 * @retval 00208 */ 00209 void sendHTTP(TcpClient* client, char* header, char* content) 00210 { 00211 char content_length[10] = { }; 00212 00213 sprintf(content_length, "%u\r\n", strlen(content)); 00214 00215 strcat(header, "\r\nContent-Type: text/html\r\n"); 00216 strcat(header, "Content-Length: "); 00217 strcat(header, content_length); 00218 strcat(header, "Pragma: no-cache\r\n"); 00219 strcat(header, "Connection: About to close\r\n\r\n"); 00220 00221 char c = content[0]; 00222 memmove(httpBuf + strlen(header), httpBuf, strlen(content)); // make room for the header 00223 strcpy(httpBuf, header); // copy the header on front of the content 00224 httpBuf[strlen(header)] = c; 00225 client->send((uint8_t*)httpBuf, strlen(httpBuf)); 00226 } 00227 00228 /** 00229 * @brief 00230 * @note 00231 * @param 00232 * @retval 00233 */ 00234 int main(void) 00235 { 00236 printf("Starting ...\r\n"); 00237 00238 net.set_network(IP, NETMASK, GATEWAY); // include this for using static IP address 00239 if (net.connect(60) != 0) { 00240 00241 // 'connect' timeout in seconds (defaults to 60 sec) 00242 printf("Unable to connet.\r\n"); 00243 return -1; 00244 } 00245 printf("connected"); 00246 // Show the network address 00247 SocketAddress addr; 00248 net.get_ip_address(&addr); 00249 printf("IP address: %s\n", addr.get_ip_address() ? addr.get_ip_address() : "None"); 00250 net.get_netmask(&addr); 00251 printf("Netmask: %s\n", addr.get_ip_address() ? addr.get_ip_address() : "None"); 00252 net.get_gateway(&addr); 00253 printf("Gateway: %s\n", addr.get_ip_address() ? addr.get_ip_address() : "None"); 00254 00255 /* Open the server on ethernet stack */ 00256 server.open(&net); 00257 00258 /* Bind the HTTP port (TCP 80) to the server */ 00259 server.bind(PORT); 00260 00261 /* Can handle 4 simultaneous connections */ 00262 server.listen(4); 00263 00264 while (true) { 00265 client = server.accept(); 00266 if (client) { 00267 switch (client->recv((uint8_t*)httpBuf, client->available())) { 00268 case 0: 00269 printf("recieved buffer is empty.\n\r"); 00270 break; 00271 00272 case -1: 00273 printf("failed to read data from client.\n\r"); 00274 break; 00275 00276 default: 00277 #ifdef DEBUG 00278 printf("Client with IP address %s connected.\r\n\r\n", client->getpeername()); 00279 printf("Data received:\r\n%s\n\r", receiveBuf); 00280 #endif 00281 if (strncmp(httpBuf, "GET", 3) != 0) { 00282 strcpy(httpHeader, "HTTP/1.0 200 OK"); 00283 strcpy(httpBuf, "<h1>200 OK</h1>"); 00284 sendHTTP(client, httpHeader, httpBuf); 00285 } 00286 else 00287 if ((strncmp(httpBuf, "GET", 3) == 0) && (strncmp(httpBuf + 3, " / ", 3 == 0))) { 00288 strcpy(httpHeader, "HTTP/1.0 200 OK"); 00289 strcpy(httpBuf, "<p>Usage: http://host_or_ip/password</p>\r\n"); 00290 sendHTTP(client, httpHeader, httpBuf); 00291 } 00292 else { 00293 int cmd = analyseURL(httpBuf); 00294 switch (cmd) { 00295 case -3: 00296 // update webpage 00297 strcpy(httpHeader, "HTTP/1.0 200 OK"); 00298 sendHTTP(client, httpHeader, showWebPage(output)); 00299 break; 00300 00301 case -2: 00302 // redirect to the right base url 00303 strcpy(httpHeader, "HTTP/1.0 301 Moved Permanently\r\nLocation: "); 00304 sendHTTP(client, httpHeader, movedPermanently(1)); 00305 break; 00306 00307 case -1: 00308 strcpy(httpHeader, "HTTP/1.0 401 Unauthorized"); 00309 strcpy(httpBuf, "<h1>401 Unauthorized</h1>"); 00310 sendHTTP(client, httpHeader, httpBuf); 00311 break; 00312 00313 case 0: 00314 output = OFF; // output off 00315 strcpy(httpHeader, "HTTP/1.0 200 OK"); 00316 sendHTTP(client, httpHeader, showWebPage(output)); 00317 break; 00318 00319 case 1: 00320 output = ON; // output on 00321 strcpy(httpHeader, "HTTP/1.0 200 OK"); 00322 sendHTTP(client, httpHeader, showWebPage(output)); 00323 break; 00324 } 00325 } 00326 } 00327 00328 client->close(); 00329 } 00330 } 00331 }
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