FOURNET Olivier
Fonctions communes aux programmes Nucleo Web ENC28J60...
Dependents: Nucleo_Web_ENC28J60 Nucleo_Web_ENC28J60_ADC
Diff: Fct_Web.h
- Revision:
- 0:36baf2ffa8eb
- Child:
- 1:b52ad028c502
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/Fct_Web.h Wed Aug 19 09:49:11 2015 +0000
@@ -0,0 +1,187 @@
+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 += __image_301_Moved_Permanently__;
+ httpContent += "</h1>\r\n";
+ */
+ httpContent += str_moved_perm;
+
+ 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>\r\n";
+ httpContent += "<center><h2>WEB Server Nucleo F411RE - ENC28J60 - Password Page</h2></center>\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>\r\n";
+ }
+ else
+ {
+ httpContent += "<hr><pre>\r\n <font color=#FF0000>OFF</font>";
+ httpContent += " <a href=\"./?sw=1\">[switch on]</a>\r\n";
+ }
+
+ httpContent += " <a href=\".\">[refresh status]</a>\r\n";
+ httpContent += "</pre>\r\n<hr>\r\n";
+
+ httpContent += "</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 += __image_401_Unauthorized__;
+ // httpContent += "</h1>\r\n";
+
+ httpContent = str_Unauthorized;
+ 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-----------
+}
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