Jonas Nimb
Webserver controller with url trimming for value controls
Dependencies: LCD_DISCO_F746NG BSP_DISCO_F746NG
Diff: main.cpp
- Revision:
- 9:161bed13b17e
- Parent:
- 8:47b0cb4b5b7d
- Child:
- 10:f941e0750773
--- a/main.cpp Tue Oct 30 16:41:15 2018 +0000
+++ b/main.cpp Mon Jul 01 17:23:49 2019 +0000
@@ -1,317 +1,327 @@
#include "mbed.h"
#include "EthernetInterface.h"
-#include "TCPServer.h"
#include "TCPSocket.h"
#include <stdio.h>
#include <string>
-
-using namespace std;
-
-#define IP "192.168.1.181"
-#define GATEWAY "192.168.1.1"
-#define NETMASK "255.255.255.0"
-
-
-#define PORT 80
-
+
+using namespace std;
+
+#define IP "192.168.1.181"
+#define GATEWAY "192.168.1.1"
+#define NETMASK "255.255.255.0"
+#define PORT 80
+
+Serial pc(USBTX, USBRX);
EthernetInterface* net;
-
-TCPServer server;
-TCPSocket clientSocket;
+TCPSocket server;
+TCPSocket* clientSocket;
SocketAddress clientAddress;
-char receiveBuf[1024] = { };
-
+char receiveBuf[1024];
const int OFF = 0;
const int ON = 1;
-
-DigitalOut sw(LED1);
-float roomTemp = 21.8; // A temperature sensor output
-
-const string PASSWORD = "secret"; // change as you like
-const string HTTP_OK = "HTTP/1.0 200 OK";
-const string MOVED_PERM = "HTTP/1.0 301 Moved Permanently\r\nLocation: ";
+DigitalOut sw(LED1); // A digital output to be switched on/off
+float roomTemp = 21.8; // A temperature sensor output
+const string PASSWORD = "secret"; // Change as you like
+const string HTTP_OK = "HTTP/1.0 200 OK";
+const string MOVED_PERM = "HTTP/1.0 301 Moved Permanently\r\nLocation: ";
const string UNAUTHORIZED = "HTTP/1.0 401 Unauthorized";
-string httpHeader; // HTTP header
-string httpContent; // HTTP content
-
-/**
- * @brief Defines a custom MAC address
- * @note Uncomment the code below to define a unique MAC address.
- * Modify the mac array items as needed.
- * @param
- * @retval
- */
-//extern "C" void mbed_mac_address(char* mac) {
-// mac[0] = 0x00;
-// mac[1] = 0x01;
-// mac[2] = 0x02;
-// mac[3] = 0x03;
-// mac[4] = 0x04;
-// mac[5] = 0x05;
-//};
-
+string httpHeader; // HTTP header
+string httpContent; // HTTP content
+
/**
* @brief Analyses the received URL
* @note The string passed to this function will look like this:
+ * GET /HTTP/1.....
* GET /password HTTP/1.....
* GET /password/ HTTP/1.....
* GET /password/?sw=1 HTTP/1.....
* GET /password/?sw=0 HTTP/1.....
* @param url URL string
- * @retval -1 invalid password
+ * @retval -3 just refresh page
* -2 no command given but password valid
- * -3 just refresh page
+ * -1 invalid password
* 0 switch off
* 1 switch on
*/
-int8_t analyseURL(string& url) {
- if(url.substr(5, PASSWORD.size()) != PASSWORD)
+int8_t analyseURL(string& url)
+{
+ if (url.length() < 5 + PASSWORD.size() + 1)
+ return(-1);
+
+ if (url.substr(5, PASSWORD.size()) != PASSWORD)
return(-1);
-
+
uint8_t pos = 5 + PASSWORD.size();
-
- if(url.substr(pos, 1) == " ")
+
+ if (url.substr(pos, 1) != "/")
+ return(-1);
+
+ if (url.substr(pos++, 1) == " ")
return(-2);
-
- if(url.substr(pos++, 1) != "/")
- return(-1);
-
+
string cmd(url.substr(pos, 5));
-
- if(cmd == "?sw=0")
+
+ if (cmd == "?sw=0")
return(0);
-
- if(cmd == "?sw=1")
+
+ if (cmd == "?sw=1")
return(1);
-
+
return(-3);
}
-
+
/**
* @brief
* @note
* @param
* @retval
*/
-string& movedPermanently(uint8_t flag) {
- if(flag == 1)
+string& movedPermanently(uint8_t flag)
+{
+ if (flag == 1)
httpContent = "/" + PASSWORD + "/";
else
httpContent = "";
-
+
httpContent += "<h1>301 Moved Permanently</h1>\r\n";
-
+
return(httpContent);
}
-
+
/**
* @brief
* @note
* @param
* @retval
*/
-string& showWebPage(uint8_t status) {
- char roomTempStr[5];
-
+string& showWebPage(int status)
+{
+ char roomTempStr[5];
+
//roomTemp = ds1820.read();
sprintf(roomTempStr, "%3.1f", roomTemp);
-
- // CSS toggle switch
- httpContent = "<head>";
- httpContent += "<style>";
-
- httpContent += ".switch {";
- httpContent += "position: relative;";
- httpContent += "display: inline-block;";
- httpContent += "width: 60px;";
- httpContent += "height: 34px;";
- httpContent += "}";
-
- httpContent += ".switch input {display:none;}";
-
- httpContent += ".slider {";
- httpContent += "position: absolute;";
- httpContent += "cursor: pointer;";
- httpContent += "top: 0;";
- httpContent += "left: 0;";
- httpContent += "right: 0;";
- httpContent += "bottom: 0;";
- httpContent += "border-radius: 34px;";
- httpContent += "background-color: #ccc;";
- httpContent += "-webkit-transition: .4s;";
- httpContent += "transition: .4s;";
- httpContent += "}";
-
- httpContent += ".slider:before {";
- httpContent += "position: absolute;";
- httpContent += "content: \"\";";
- httpContent += "height: 26px;";
- httpContent += "width: 26px;";
- httpContent += "left: 4px;";
- httpContent += "bottom: 4px;";
- httpContent += "border-radius: 50%;";
- httpContent += "background-color: white;";
- httpContent += "-webkit-transition: .4s;";
- httpContent += "transition: .4s;";
- httpContent += "}";
-
- httpContent += "input:checked + .slider {";
- httpContent += "background-color: #8ce196;";
- httpContent += "}";
-
- httpContent += "input:focus + .slider {";
- httpContent += "box-shadow: 0 0 1px #8ce196;";
- httpContent += "}";
-
- httpContent += "input:checked + .slider:before {";
- httpContent += "-webkit-transform: translateX(26px);";
- httpContent += "-ms-transform: translateX(26px);";
- httpContent += "transform: translateX(26px);";
- httpContent += "}";
-
- httpContent += "</style>";
- httpContent += "</head>";
-
- httpContent += "<body>";
- httpContent += "<h2><a href=\".\" title=\"Click to refresh the page\">Smart Home</a></h2>";
- httpContent += "<pre>Temperature:\t" + string(roomTempStr) + "°C</pre>";
- httpContent += "<pre>Heating:\t";
-
+
+ /*$off*/
+ httpContent =
+ "<head>"
+ "<meta charset=\"utf-8\">"
+ "<meta name=\"viewport\" content=\" initial-scale=1.0; maximum-scale=1.0; minimum-scale=1.0; user-scalable=0;\"/>"
+ "<title>Smart Home</title>"
+ "<link href='http://fonts.googleapis.com/css?family=Droid+Sans&v1' rel='stylesheet' type='text/css'>"
+ "<style>"
+ ".switch {"
+ "position: relative;"
+ "display: inline-block;"
+ "width: 60px;"
+ "height: 34px;"
+ "}"
+ ".switch input {display:none;}"
+ ".slider {"
+ "position: absolute;"
+ "cursor: pointer;"
+ "top: 0;"
+ "left: 0;"
+ "right: 0;"
+ "bottom: 0;"
+ "border-radius: 34px;"
+ "background-color: #ccc;"
+ "-webkit-transition: .4s;"
+ "transition: .4s;"
+ "}"
+ ".slider:before {"
+ "position: absolute;"
+ "content: \"\";"
+ "height: 26px;"
+ "width: 26px;"
+ "left: 4px;"
+ "bottom: 4px;"
+ "border-radius: 50%;"
+ "background-color: white;"
+ "-webkit-transition: .4s;"
+ "transition: .4s;"
+ "}"
+ "input:checked + .slider {"
+ "background-color: #8ce196;"
+ "}"
+ "input:focus + .slider {"
+ "box-shadow: 0 0 1px #8ce196;"
+ "}"
+ "input:checked + .slider:before {"
+ "-webkit-transform: translateX(26px);"
+ "-ms-transform: translateX(26px);"
+ "transform: translateX(26px);"
+ "}"
+ "</style>"
+ "</head>"
+
+ "<body>"
+ "<h2><a href=\".\" title=\"Click to refresh the page\">Smart Home</a></h2>"
+ "<pre>Temperature:\t" + string(roomTempStr) + "°C</pre>"
+ "<pre>Heating:\t";
+
if(status == ON) {
- httpContent += "<a href=\"./?sw=0\" class=\"switch\"> ";
- httpContent += "<input type=\"checkbox\" checked>";
+ httpContent +=
+ "<a href=\"./?sw=0\" class=\"switch\"> "
+ "<input type=\"checkbox\" checked>";
}
else {
- httpContent += "<a href=\"./?sw=1\" class=\"switch\"> ";
- httpContent += "<input type=\"checkbox\">";
- }
-
- httpContent += "<div class=\"slider\"></div>";
- httpContent += "</a></pre>";
- httpContent += "<hr>";
- httpContent += "<pre>2017 armMBED</pre>";
- httpContent += "</body>";
-
+ httpContent +=
+ "<a href=\"./?sw=1\" class=\"switch\"> "
+ "<input type=\"checkbox\">";
+ }
+
+ httpContent +=
+ "<div class=\"slider\"></div>"
+ "</a>"
+ "</pre>"
+ "<hr>"
+ "<pre>2017 ARMmbed</pre>"
+ "</body>";
+
return httpContent;
+ /*$on*/
}
-
+
/**
* @brief
* @note
* @param
* @retval
*/
-void sendHTTP(TCPSocket& client, string& header, string& content) {
+void sendHTTP(TCPSocket& client, string& header, string& content)
+{
+ /*$off*/
char content_length[5] = { };
-
- header += "\r\nContent-Type: text/html\r\n";
- header += "Content-Length: ";
+
+ header +=
+ "\r\nContent-Type: text/html\r\n"
+ "Content-Length: ";
sprintf(content_length, "%d", content.length());
- header += string(content_length) + "\r\n";
- header += "Pragma: no-cache\r\n";
- header += "Connection: About to close\r\n";
- header += "\r\n";
-
+ header +=
+ string(content_length) + "\r\n"
+ "Pragma: no-cache\r\n"
+ "Connection: About to close\r\n\r\n";
+
string webpage = header + content;
client.send((char*)webpage.c_str(), webpage.length());
- printf("HTTP sent.\n\r");
+ pc.printf("HTTP message sent to client.\n\r");
+ /*$on*/
}
-
+
/**
* @brief
* @note
* @param
* @retval
*/
-int main(void) {
- printf("Starting\r\n");
-
- //net = NetworkInterface::get_default_instance();
-
+int main(void)
+{
+ pc.printf("Starting.. \r\n\r\n");
+
net = new EthernetInterface();
if (!net) {
- printf("Error! No network inteface found.\n");
+ pc.printf("Error! No network inteface found.\n");
return 0;
}
//net->set_network (IP, NETMASK, GATEWAY); // include this for using static IP address
-
- nsapi_size_or_error_t r = net->connect();
+ nsapi_size_or_error_t r = net->connect();
+
if (r != 0) {
- printf("Error! net->connect() returned: %d\n", r);
+ pc.printf("Error! net->connect() returned: %d\n", r);
return r;
}
- // Show the network address
- const char *ip = net->get_ip_address();
- const char *netmask = net->get_netmask();
- const char *gateway = net->get_gateway();
- printf("IP address: %s\n", ip ? ip : "None");
- printf("Netmask: %s\n", netmask ? netmask : "None");
- printf("Gateway: %s\n", gateway ? gateway : "None");
- printf("Usage: Type %s/%s/ into your web browser and hit ENTER\r\n", ip, PASSWORD.c_str());
-
+ // Show the network address
+ const char* ip = net->get_ip_address();
+ const char* netmask = net->get_netmask();
+ const char* gateway = net->get_gateway();
+
+ pc.printf("IP address: %s\r\n", ip ? ip : "None");
+ pc.printf("Netmask: %s\r\n", netmask ? netmask : "None");
+ pc.printf("Gateway: %s\r\n\r\n", gateway ? gateway : "None");
+ pc.printf("Usage: Type %s/%s/ into your web browser and hit ENTER\r\n\r\n", ip, PASSWORD.c_str());
+
/* Open the server on ethernet stack */
server.open(net);
-
+
/* Bind the HTTP port (TCP 80) to the server */
- server.bind(ip, 80);
-
+ server.bind(ip, PORT);
+
/* Can handle 5 simultaneous connections */
server.listen(5);
-
+
//listening for http GET request
- while(true) {
- printf("=========================================\r\n");
- printf("Ready to serve clients.\r\n");
- server.accept(&clientSocket, &clientAddress);
- printf("Connection succeeded!\n\rIP: %s\n\r", clientAddress.get_ip_address());
- clientSocket.recv(receiveBuf, 1023);
- printf("Recieved Data: %d\n\r\n\r%.*s\n\r", strlen(receiveBuf), strlen(receiveBuf), receiveBuf);
-
+ while (true) {
+ pc.printf("=========================================\r\n");
+
+ nsapi_error_t error;
+
+ clientSocket = server.accept(&error);
+ if (error != 0) {
+ pc.printf("Connection failed!\r\n");
+ clientSocket->close();
+ continue;
+ }
+
+ clientSocket->getpeername(&clientAddress);
+ pc.printf("Client with IP address %s connected.\r\n\r\n", clientAddress.get_ip_address());
+ clientSocket->recv(receiveBuf, 1023);
+ pc.printf("Data received:\r\n%s\n\r", receiveBuf);
+
string received(receiveBuf);
-
- if(received.substr(0, 3) != "GET") {
+
+ if (received.substr(0, 3) != "GET") {
httpHeader = HTTP_OK;
httpContent = "<h1>200 OK</h1>";
- sendHTTP(clientSocket, httpHeader, httpContent);
+ sendHTTP(*clientSocket, httpHeader, httpContent);
+ clientSocket->close();
continue;
}
-
- if(received.substr(0, 6) == "GET / ") {
+
+ if (received.substr(0, 6) == "GET / ") {
httpHeader = HTTP_OK;
httpContent = "<p>Usage: Type http://ip_address/password/ into your web browser and hit ENTER</p>\r\n";
- sendHTTP(clientSocket, httpHeader, httpContent);
- continue;
- }
-
- int cmd = analyseURL(received);
-
- if(cmd == -2) {
-
- // redirect to the right base url
- httpHeader = MOVED_PERM;
- sendHTTP(clientSocket, httpHeader, movedPermanently(1));
+ sendHTTP(*clientSocket, httpHeader, httpContent);
+ clientSocket->close();
continue;
}
-
- if(cmd == -1) {
- httpHeader = UNAUTHORIZED;
- httpContent = "<h1>401 Unauthorized</h1>";
- sendHTTP(clientSocket, httpHeader, httpContent);
- continue;
+
+ int cmd = analyseURL(received);
+
+ switch (cmd) {
+ case -3:
+ // update webpage
+ httpHeader = HTTP_OK;
+ sendHTTP(*clientSocket, httpHeader, showWebPage(sw));
+ break;
+
+ case -2:
+ // redirect to the right base url
+ httpHeader = MOVED_PERM;
+ sendHTTP(*clientSocket, httpHeader, movedPermanently(1));
+ break;
+
+ case -1:
+ httpHeader = UNAUTHORIZED;
+ httpContent = "<h1>401 Unauthorized</h1>";
+ sendHTTP(*clientSocket, httpHeader, httpContent);
+ break;
+
+ case 0:
+ sw = OFF; // turn the switch off
+ httpHeader = HTTP_OK;
+ sendHTTP(*clientSocket, httpHeader, showWebPage(sw));
+ break;
+
+ case 1:
+ sw = ON; // turn the switch on
+ httpHeader = HTTP_OK;
+ sendHTTP(*clientSocket, httpHeader, showWebPage(sw));
+ break;
}
-
- if(cmd == ON) {
- sw = ON; // turn the switch on
- }
-
- if(cmd == OFF) {
- sw = OFF; // turn the switch off
- }
-
- httpHeader = HTTP_OK;
- sendHTTP(clientSocket, httpHeader, showWebPage(sw));
+
+ clientSocket->close();
}
-}
\ No newline at end of file
+}