Jonas Nimb / Mbed OS WebserverMotorControl

Webserver controller with url trimming for value controls

Dependencies:   LCD_DISCO_F746NG BSP_DISCO_F746NG

main.cpp@6:e2d251d535f0, 2017-05-09 (annotated)

Committer:
hudakz
Date:
Tue May 09 06:12:22 2017 +0000
Revision:
6:e2d251d535f0
Parent:
5:e1218721aefd
Child:
7:02a0635aeeac
Button rounded.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
hudakz 0:e455fdb56bc8 1 #include "mbed.h"
hudakz 0:e455fdb56bc8 2 #include "EthernetInterface.h"
hudakz 0:e455fdb56bc8 3 #include "TCPServer.h"
hudakz 0:e455fdb56bc8 4 #include "TCPSocket.h"
hudakz 0:e455fdb56bc8 5 #include <stdio.h>
hudakz 0:e455fdb56bc8 6 #include <string>
hudakz 0:e455fdb56bc8 7
hudakz 0:e455fdb56bc8 8 using namespace std;
hudakz 0:e455fdb56bc8 9
hudakz 0:e455fdb56bc8 10 #define PORT 80
hudakz 0:e455fdb56bc8 11
hudakz 0:e455fdb56bc8 12 EthernetInterface ethernet;
hudakz 0:e455fdb56bc8 13 TCPServer server;
hudakz 0:e455fdb56bc8 14 TCPSocket clientSocket;
hudakz 0:e455fdb56bc8 15 SocketAddress clientAddress;
hudakz 0:e455fdb56bc8 16 char receiveBuf[1024] = { };
hudakz 0:e455fdb56bc8 17
hudakz 0:e455fdb56bc8 18 const int OFF = 0;
hudakz 0:e455fdb56bc8 19 const int ON = 1;
hudakz 0:e455fdb56bc8 20
hudakz 0:e455fdb56bc8 21 DigitalOut sw(LED1);
hudakz 2:33e8bb5615a6 22 float roomTemp = 21.8; // A temperature sensor output
hudakz 0:e455fdb56bc8 23
hudakz 0:e455fdb56bc8 24 const string PASSWORD = "secret"; // change as you like
hudakz 0:e455fdb56bc8 25 const string HTTP_OK = "HTTP/1.0 200 OK";
hudakz 0:e455fdb56bc8 26 const string MOVED_PERM = "HTTP/1.0 301 Moved Permanently\r\nLocation: ";
hudakz 0:e455fdb56bc8 27 const string UNAUTHORIZED = "HTTP/1.0 401 Unauthorized";
hudakz 0:e455fdb56bc8 28 string httpHeader; // HTTP header
hudakz 0:e455fdb56bc8 29 string httpContent; // HTTP content
hudakz 2:33e8bb5615a6 30
hudakz 2:33e8bb5615a6 31 /**
hudakz 2:33e8bb5615a6 32 * @brief Defines a custom MAC address
hudakz 2:33e8bb5615a6 33 * @note Uncomment the code below to define a unique MAC address.
hudakz 2:33e8bb5615a6 34 * Modify the mac array items as needed.
hudakz 2:33e8bb5615a6 35 * @param
hudakz 2:33e8bb5615a6 36 * @retval
hudakz 2:33e8bb5615a6 37 */
hudakz 2:33e8bb5615a6 38 //extern "C" void mbed_mac_address(char* mac) {
hudakz 2:33e8bb5615a6 39 // mac[0] = 0x00;
hudakz 2:33e8bb5615a6 40 // mac[1] = 0x01;
hudakz 2:33e8bb5615a6 41 // mac[2] = 0x02;
hudakz 2:33e8bb5615a6 42 // mac[3] = 0x03;
hudakz 2:33e8bb5615a6 43 // mac[4] = 0x04;
hudakz 2:33e8bb5615a6 44 // mac[5] = 0x05;
hudakz 2:33e8bb5615a6 45 //};
hudakz 0:e455fdb56bc8 46
hudakz 2:33e8bb5615a6 47 /**
hudakz 2:33e8bb5615a6 48 * @brief Analyses the received URL
hudakz 2:33e8bb5615a6 49 * @note The string passed to this function will look like this:
hudakz 2:33e8bb5615a6 50 * GET /password HTTP/1.....
hudakz 2:33e8bb5615a6 51 * GET /password/ HTTP/1.....
hudakz 2:33e8bb5615a6 52 * GET /password/?sw=1 HTTP/1.....
hudakz 2:33e8bb5615a6 53 * GET /password/?sw=0 HTTP/1.....
hudakz 2:33e8bb5615a6 54 * @param url URL string
hudakz 2:33e8bb5615a6 55 * @retval -1 invalid password
hudakz 2:33e8bb5615a6 56 * -2 no command given but password valid
hudakz 2:33e8bb5615a6 57 * -3 just refresh page
hudakz 2:33e8bb5615a6 58 * 0 switch off
hudakz 2:33e8bb5615a6 59 * 1 switch on
hudakz 2:33e8bb5615a6 60 */
hudakz 2:33e8bb5615a6 61 int8_t analyseURL(string& url) {
hudakz 2:33e8bb5615a6 62 if(url.substr(5, PASSWORD.size()) != PASSWORD)
hudakz 0:e455fdb56bc8 63 return(-1);
hudakz 0:e455fdb56bc8 64
hudakz 0:e455fdb56bc8 65 uint8_t pos = 5 + PASSWORD.size();
hudakz 0:e455fdb56bc8 66
hudakz 2:33e8bb5615a6 67 if(url.substr(pos, 1) == " ")
hudakz 0:e455fdb56bc8 68 return(-2);
hudakz 0:e455fdb56bc8 69
hudakz 2:33e8bb5615a6 70 if(url.substr(pos++, 1) != "/")
hudakz 0:e455fdb56bc8 71 return(-1);
hudakz 0:e455fdb56bc8 72
hudakz 2:33e8bb5615a6 73 string cmd(url.substr(pos, 5));
hudakz 0:e455fdb56bc8 74
hudakz 0:e455fdb56bc8 75 if(cmd == "?sw=0")
hudakz 2:33e8bb5615a6 76 return(0);
hudakz 0:e455fdb56bc8 77
hudakz 0:e455fdb56bc8 78 if(cmd == "?sw=1")
hudakz 2:33e8bb5615a6 79 return(1);
hudakz 0:e455fdb56bc8 80
hudakz 0:e455fdb56bc8 81 return(-3);
hudakz 0:e455fdb56bc8 82 }
hudakz 0:e455fdb56bc8 83
hudakz 0:e455fdb56bc8 84 /**
hudakz 0:e455fdb56bc8 85 * @brief
hudakz 0:e455fdb56bc8 86 * @note
hudakz 0:e455fdb56bc8 87 * @param
hudakz 0:e455fdb56bc8 88 * @retval
hudakz 0:e455fdb56bc8 89 */
hudakz 0:e455fdb56bc8 90 string& movedPermanently(uint8_t flag) {
hudakz 0:e455fdb56bc8 91 if(flag == 1)
hudakz 0:e455fdb56bc8 92 httpContent = "/" + PASSWORD + "/";
hudakz 0:e455fdb56bc8 93 else
hudakz 0:e455fdb56bc8 94 httpContent = "";
hudakz 0:e455fdb56bc8 95
hudakz 0:e455fdb56bc8 96 httpContent += "<h1>301 Moved Permanently</h1>\r\n";
hudakz 0:e455fdb56bc8 97
hudakz 0:e455fdb56bc8 98 return(httpContent);
hudakz 0:e455fdb56bc8 99 }
hudakz 0:e455fdb56bc8 100
hudakz 0:e455fdb56bc8 101 /**
hudakz 0:e455fdb56bc8 102 * @brief
hudakz 0:e455fdb56bc8 103 * @note
hudakz 0:e455fdb56bc8 104 * @param
hudakz 0:e455fdb56bc8 105 * @retval
hudakz 0:e455fdb56bc8 106 */
hudakz 0:e455fdb56bc8 107 string& showWebPage(uint8_t status) {
hudakz 2:33e8bb5615a6 108 char roomTempStr[5];
hudakz 5:e1218721aefd 109
hudakz 2:33e8bb5615a6 110 //roomTemp = ds1820.read();
hudakz 2:33e8bb5615a6 111 sprintf(roomTempStr, "%3.1f", roomTemp);
hudakz 2:33e8bb5615a6 112
hudakz 5:e1218721aefd 113 // CSS toggle switch
hudakz 5:e1218721aefd 114 httpContent = "<head>";
hudakz 5:e1218721aefd 115 httpContent += "<style>";
hudakz 5:e1218721aefd 116
hudakz 5:e1218721aefd 117 httpContent += ".switch {";
hudakz 5:e1218721aefd 118 httpContent += "position: relative;";
hudakz 5:e1218721aefd 119 httpContent += "display: inline-block;";
hudakz 5:e1218721aefd 120 httpContent += "width: 60px;";
hudakz 5:e1218721aefd 121 httpContent += "height: 34px;";
hudakz 5:e1218721aefd 122 httpContent += "}";
hudakz 5:e1218721aefd 123
hudakz 5:e1218721aefd 124 httpContent += ".switch input {display:none;}";
hudakz 5:e1218721aefd 125
hudakz 5:e1218721aefd 126 httpContent += ".slider {";
hudakz 5:e1218721aefd 127 httpContent += "position: absolute;";
hudakz 5:e1218721aefd 128 httpContent += "cursor: pointer;";
hudakz 5:e1218721aefd 129 httpContent += "top: 0;";
hudakz 5:e1218721aefd 130 httpContent += "left: 0;";
hudakz 5:e1218721aefd 131 httpContent += "right: 0;";
hudakz 5:e1218721aefd 132 httpContent += "bottom: 0;";
hudakz 6:e2d251d535f0 133 httpContent += "border-radius: 34px;";
hudakz 5:e1218721aefd 134 httpContent += "background-color: #ccc;";
hudakz 5:e1218721aefd 135 httpContent += "-webkit-transition: .4s;";
hudakz 5:e1218721aefd 136 httpContent += "transition: .4s;";
hudakz 5:e1218721aefd 137 httpContent += "}";
hudakz 5:e1218721aefd 138
hudakz 5:e1218721aefd 139 httpContent += ".slider:before {";
hudakz 5:e1218721aefd 140 httpContent += "position: absolute;";
hudakz 5:e1218721aefd 141 httpContent += "content: \"\";";
hudakz 5:e1218721aefd 142 httpContent += "height: 26px;";
hudakz 5:e1218721aefd 143 httpContent += "width: 26px;";
hudakz 5:e1218721aefd 144 httpContent += "left: 4px;";
hudakz 5:e1218721aefd 145 httpContent += "bottom: 4px;";
hudakz 6:e2d251d535f0 146 httpContent += "border-radius: 50%;";
hudakz 5:e1218721aefd 147 httpContent += "background-color: white;";
hudakz 5:e1218721aefd 148 httpContent += "-webkit-transition: .4s;";
hudakz 5:e1218721aefd 149 httpContent += "transition: .4s;";
hudakz 5:e1218721aefd 150 httpContent += "}";
hudakz 5:e1218721aefd 151
hudakz 5:e1218721aefd 152 httpContent += "input:checked + .slider {";
hudakz 5:e1218721aefd 153 httpContent += "background-color: #8ce196;";
hudakz 5:e1218721aefd 154 httpContent += "}";
hudakz 5:e1218721aefd 155
hudakz 5:e1218721aefd 156 httpContent += "input:focus + .slider {";
hudakz 5:e1218721aefd 157 httpContent += "box-shadow: 0 0 1px #8ce196;";
hudakz 5:e1218721aefd 158 httpContent += "}";
hudakz 5:e1218721aefd 159
hudakz 5:e1218721aefd 160 httpContent += "input:checked + .slider:before {";
hudakz 5:e1218721aefd 161 httpContent += "-webkit-transform: translateX(26px);";
hudakz 5:e1218721aefd 162 httpContent += "-ms-transform: translateX(26px);";
hudakz 5:e1218721aefd 163 httpContent += "transform: translateX(26px);";
hudakz 5:e1218721aefd 164 httpContent += "}";
hudakz 5:e1218721aefd 165
hudakz 5:e1218721aefd 166 httpContent += "</style>";
hudakz 5:e1218721aefd 167 httpContent += "</head>";
hudakz 5:e1218721aefd 168
hudakz 5:e1218721aefd 169 httpContent += "<body>";
hudakz 5:e1218721aefd 170 httpContent += "<h2><a href=\".\" title=\"Click to refresh the page\">Smart Home</a></h2>";
hudakz 5:e1218721aefd 171 httpContent += "<pre>Temperature:\t" + string(roomTempStr) + "&deg;C</pre>";
hudakz 6:e2d251d535f0 172 httpContent += "<pre>Heating:\t";
hudakz 0:e455fdb56bc8 173
hudakz 0:e455fdb56bc8 174 if(status == ON) {
hudakz 6:e2d251d535f0 175 httpContent += "<a href=\"./?sw=0\" class=\"switch\"> ";
hudakz 5:e1218721aefd 176 httpContent += "<input type=\"checkbox\" checked>";
hudakz 0:e455fdb56bc8 177 }
hudakz 0:e455fdb56bc8 178 else {
hudakz 6:e2d251d535f0 179 httpContent += "<a href=\"./?sw=1\" class=\"switch\"> ";
hudakz 5:e1218721aefd 180 httpContent += "<input type=\"checkbox\">";
hudakz 5:e1218721aefd 181 }
hudakz 5:e1218721aefd 182
hudakz 5:e1218721aefd 183 httpContent += "<div class=\"slider\"></div>";
hudakz 6:e2d251d535f0 184 httpContent += "</a></pre>";
hudakz 5:e1218721aefd 185 httpContent += "<hr>";
hudakz 5:e1218721aefd 186 httpContent += "<pre>2017 ARMmbed</pre>";
hudakz 5:e1218721aefd 187 httpContent += "</body>";
hudakz 0:e455fdb56bc8 188
hudakz 0:e455fdb56bc8 189 return httpContent;
hudakz 0:e455fdb56bc8 190 }
hudakz 0:e455fdb56bc8 191
hudakz 0:e455fdb56bc8 192 /**
hudakz 0:e455fdb56bc8 193 * @brief
hudakz 0:e455fdb56bc8 194 * @note
hudakz 0:e455fdb56bc8 195 * @param
hudakz 0:e455fdb56bc8 196 * @retval
hudakz 0:e455fdb56bc8 197 */
hudakz 0:e455fdb56bc8 198 void sendHTTP(TCPSocket& client, string& header, string& content) {
hudakz 0:e455fdb56bc8 199 char content_length[5] = { };
hudakz 0:e455fdb56bc8 200
hudakz 0:e455fdb56bc8 201 header += "\r\nContent-Type: text/html\r\n";
hudakz 0:e455fdb56bc8 202 header += "Content-Length: ";
hudakz 0:e455fdb56bc8 203 sprintf(content_length, "%d", content.length());
hudakz 0:e455fdb56bc8 204 header += string(content_length) + "\r\n";
hudakz 0:e455fdb56bc8 205 header += "Pragma: no-cache\r\n";
hudakz 0:e455fdb56bc8 206 header += "Connection: About to close\r\n";
hudakz 0:e455fdb56bc8 207 header += "\r\n";
hudakz 0:e455fdb56bc8 208
hudakz 0:e455fdb56bc8 209 string webpage = header + content;
hudakz 0:e455fdb56bc8 210 client.send((char*)webpage.c_str(), webpage.length());
hudakz 0:e455fdb56bc8 211 printf("HTTP sent.\n\r");
hudakz 0:e455fdb56bc8 212 }
hudakz 0:e455fdb56bc8 213
hudakz 0:e455fdb56bc8 214 /**
hudakz 0:e455fdb56bc8 215 * @brief
hudakz 0:e455fdb56bc8 216 * @note
hudakz 0:e455fdb56bc8 217 * @param
hudakz 0:e455fdb56bc8 218 * @retval
hudakz 0:e455fdb56bc8 219 */
hudakz 0:e455fdb56bc8 220 int main(void) {
hudakz 5:e1218721aefd 221 //ethernet.set_network("192.168.1.181","255.255.255.0","192.168.1.1"); // use static IP address, netmask, gateway
hudakz 0:e455fdb56bc8 222 ethernet.connect();
hudakz 4:d7c37f516f5f 223 printf("Usage: Type %s/%s/ into your web browser and hit ENTER\r\n", ethernet.get_ip_address(), PASSWORD.c_str());
hudakz 0:e455fdb56bc8 224
hudakz 0:e455fdb56bc8 225 /* Open the server on ethernet stack */
hudakz 0:e455fdb56bc8 226 server.open(&ethernet);
hudakz 0:e455fdb56bc8 227
hudakz 0:e455fdb56bc8 228 /* Bind the HTTP port (TCP 80) to the server */
hudakz 0:e455fdb56bc8 229 server.bind(ethernet.get_ip_address(), 80);
hudakz 0:e455fdb56bc8 230
hudakz 0:e455fdb56bc8 231 /* Can handle 5 simultaneous connections */
hudakz 0:e455fdb56bc8 232 server.listen(5);
hudakz 0:e455fdb56bc8 233
hudakz 0:e455fdb56bc8 234 //listening for http GET request
hudakz 0:e455fdb56bc8 235 while(true) {
hudakz 2:33e8bb5615a6 236 printf("\r\n=========================================\r\n");
hudakz 2:33e8bb5615a6 237 printf("Ready to serve clients.\r\n");
hudakz 0:e455fdb56bc8 238 server.accept(&clientSocket, &clientAddress);
hudakz 0:e455fdb56bc8 239 printf("Connection succeeded!\n\rIP: %s\n\r", clientAddress.get_ip_address());
hudakz 0:e455fdb56bc8 240 clientSocket.recv(receiveBuf, 1023);
hudakz 0:e455fdb56bc8 241 printf("Recieved Data: %d\n\r\n\r%.*s\n\r", strlen(receiveBuf), strlen(receiveBuf), receiveBuf);
hudakz 0:e455fdb56bc8 242
hudakz 0:e455fdb56bc8 243 string received(receiveBuf);
hudakz 2:33e8bb5615a6 244
hudakz 0:e455fdb56bc8 245 if(received.substr(0, 3) != "GET") {
hudakz 0:e455fdb56bc8 246 httpHeader = HTTP_OK;
hudakz 0:e455fdb56bc8 247 httpContent = "<h1>200 OK</h1>";
hudakz 0:e455fdb56bc8 248 sendHTTP(clientSocket, httpHeader, httpContent);
hudakz 0:e455fdb56bc8 249 continue;
hudakz 0:e455fdb56bc8 250 }
hudakz 0:e455fdb56bc8 251
hudakz 0:e455fdb56bc8 252 if(received.substr(0, 6) == "GET / ") {
hudakz 0:e455fdb56bc8 253 httpHeader = HTTP_OK;
hudakz 0:e455fdb56bc8 254 httpContent = "<p>Usage: Type http://ip_address/password/ into your web browser and hit ENTER</p>\r\n";
hudakz 0:e455fdb56bc8 255 sendHTTP(clientSocket, httpHeader, httpContent);
hudakz 0:e455fdb56bc8 256 continue;
hudakz 0:e455fdb56bc8 257 }
hudakz 0:e455fdb56bc8 258
hudakz 0:e455fdb56bc8 259 int cmd = analyseURL(received);
hudakz 0:e455fdb56bc8 260
hudakz 0:e455fdb56bc8 261 if(cmd == -2) {
hudakz 0:e455fdb56bc8 262
hudakz 0:e455fdb56bc8 263 // redirect to the right base url
hudakz 0:e455fdb56bc8 264 httpHeader = MOVED_PERM;
hudakz 0:e455fdb56bc8 265 sendHTTP(clientSocket, httpHeader, movedPermanently(1));
hudakz 0:e455fdb56bc8 266 continue;
hudakz 0:e455fdb56bc8 267 }
hudakz 0:e455fdb56bc8 268
hudakz 0:e455fdb56bc8 269 if(cmd == -1) {
hudakz 0:e455fdb56bc8 270 httpHeader = UNAUTHORIZED;
hudakz 0:e455fdb56bc8 271 httpContent = "<h1>401 Unauthorized</h1>";
hudakz 0:e455fdb56bc8 272 sendHTTP(clientSocket, httpHeader, httpContent);
hudakz 0:e455fdb56bc8 273 continue;
hudakz 0:e455fdb56bc8 274 }
hudakz 0:e455fdb56bc8 275
hudakz 0:e455fdb56bc8 276 if(cmd == ON) {
hudakz 0:e455fdb56bc8 277 sw = ON; // turn the switch on
hudakz 0:e455fdb56bc8 278 }
hudakz 0:e455fdb56bc8 279
hudakz 0:e455fdb56bc8 280 if(cmd == OFF) {
hudakz 0:e455fdb56bc8 281 sw = OFF; // turn the switch off
hudakz 0:e455fdb56bc8 282 }
hudakz 0:e455fdb56bc8 283
hudakz 0:e455fdb56bc8 284 httpHeader = HTTP_OK;
hudakz 0:e455fdb56bc8 285 sendHTTP(clientSocket, httpHeader, showWebPage(sw));
hudakz 0:e455fdb56bc8 286 }
hudakz 0:e455fdb56bc8 287 }