Zoltan Hudak / HTTPServer

HTTP Server library for Mbed OS-5. A fork of Henry Leinen's [[https://os.mbed.com/users/leihen/code/HTTPServer/]] library.

Dependents:   STM32F407VET6_HTTPServer

HTTPRequestHandler.cpp@17:8bcc62289a07, 2019-10-06 (annotated)

Committer:
hudakz
Date:
Sun Oct 06 18:10:41 2019 +0000
Revision:
17:8bcc62289a07
Parent:
16:cc3f5c53d0d5 
HTTP Server library for Mbed OS-5. A fork of Henry Leine's [[https://os.mbed.com/users/leihen/code/HTTPServer | HTTPServer]] library.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
leihen 1:6b7472d5e9ee 1 /* HTTPRequestHandler.cpp */
leihen 1:6b7472d5e9ee 2 #include "mbed.h"
leihen 1:6b7472d5e9ee 3 #include "HTTPRequestHandler.h"
leihen 13:aa5338a5e452 4 #define DEBUG
leihen 16:cc3f5c53d0d5 5 #include "hl_debug.h"
leihen 12:ba81cc117fb6 6 #include <ctype.h>
leihen 1:6b7472d5e9ee 7
leihen 1:6b7472d5e9ee 8
leihen 3:d6224049b3bf 9 static char buffer[128];
leihen 3:d6224049b3bf 10
leihen 11:3943841e1798 11
leihen 13:aa5338a5e452 12 const char hdrStandard[] = "DNT: 1\r\n"
hudakz 17:8bcc62289a07 13 "MaxAge: 0\r\n"
hudakz 17:8bcc62289a07 14 "Connection: Keep-Alive\r\n"
hudakz 17:8bcc62289a07 15 "Content-Type: text/html\r\n"
hudakz 17:8bcc62289a07 16 "Server: mbed embedded\r\n"
hudakz 17:8bcc62289a07 17 "Accessible: 1\r\n"
hudakz 17:8bcc62289a07 18 "\r\n";
leihen 11:3943841e1798 19
leihen 12:ba81cc117fb6 20
leihen 12:ba81cc117fb6 21 static int _stricmp(const char* a, const char* b)
leihen 12:ba81cc117fb6 22 {
leihen 12:ba81cc117fb6 23 int la = strlen(a);
leihen 12:ba81cc117fb6 24 int lb = strlen(b);
leihen 12:ba81cc117fb6 25 for (int i = 0 ; i < min(la, lb) ; i++) {
leihen 12:ba81cc117fb6 26 if (tolower((int)a[i]) != tolower((int)b[i]))
leihen 12:ba81cc117fb6 27 return i;
leihen 12:ba81cc117fb6 28 }
leihen 12:ba81cc117fb6 29 return 0;
leihen 12:ba81cc117fb6 30 }
leihen 12:ba81cc117fb6 31
leihen 12:ba81cc117fb6 32
leihen 12:ba81cc117fb6 33 static const struct mapping_t {
leihen 12:ba81cc117fb6 34 const char* key;
leihen 12:ba81cc117fb6 35 const char* value;
leihen 12:ba81cc117fb6 36 } fileTypeMapping[] = {
hudakz 17:8bcc62289a07 37 {".gif", "Content-Type: image/gif\r\n" },
leihen 12:ba81cc117fb6 38 {".jpg", "Content-Type: image/jpeg\r\n" },
leihen 12:ba81cc117fb6 39 {".jpeg","Content-Type: image/jpeg\r\n" },
leihen 12:ba81cc117fb6 40 {".ico", "Content-Type: image/x-icon\r\n"},
leihen 12:ba81cc117fb6 41 {".png", "Content-Type: image/png\r\n" },
leihen 12:ba81cc117fb6 42 {".zip", "Content-Type: image/zip\r\n" },
leihen 12:ba81cc117fb6 43 {".gz", "Content-Type: image/gz\r\n" },
leihen 12:ba81cc117fb6 44 {".tar", "Content-Type: image/tar\r\n" },
leihen 12:ba81cc117fb6 45 {".txt", "Content-Type: plain/text\r\n" },
leihen 12:ba81cc117fb6 46 {".pdf", "Content-Type: application/pdf\r\n" },
leihen 12:ba81cc117fb6 47 {".htm", "Content-Type: text/html\r\n" },
leihen 13:aa5338a5e452 48 {".html","Content-Type: text/html\r\n" },
leihen 13:aa5338a5e452 49 {".css", "Content-Type: text/css\r\n" },
leihen 13:aa5338a5e452 50 {".js", "Content-Type: text/javascript\r\n"}};
leihen 12:ba81cc117fb6 51
hudakz 17:8bcc62289a07 52 HTTPRequestHandler::HTTPRequestHandler(HTTPConnection::HTTPMessage& Msg, TCPSocket* Tcp)
leihen 3:d6224049b3bf 53 : msg(Msg), tcp(Tcp)
leihen 1:6b7472d5e9ee 54 {
leihen 3:d6224049b3bf 55 msg = Msg;
leihen 3:d6224049b3bf 56 tcp = Tcp;
leihen 1:6b7472d5e9ee 57 }
leihen 1:6b7472d5e9ee 58
leihen 1:6b7472d5e9ee 59 HTTPRequestHandler::~HTTPRequestHandler()
leihen 1:6b7472d5e9ee 60 {
leihen 3:d6224049b3bf 61 }
leihen 3:d6224049b3bf 62
leihen 12:ba81cc117fb6 63 void HTTPRequestHandler::getStandardHeaders(HTTPHeaders& header, const char* fext)
leihen 12:ba81cc117fb6 64 {
leihen 12:ba81cc117fb6 65 header.clear();
leihen 12:ba81cc117fb6 66 header["DNT"] = "1";
leihen 12:ba81cc117fb6 67 header["MaxAge"] = "0";
leihen 12:ba81cc117fb6 68 header["Connection"] = "Keep-Alive";
leihen 12:ba81cc117fb6 69 header["Server"] = "mbed Embedded";
leihen 12:ba81cc117fb6 70 if (fext == NULL)
leihen 12:ba81cc117fb6 71 header["Content-Type"] = "text/html";
leihen 12:ba81cc117fb6 72 else {
leihen 12:ba81cc117fb6 73 for (int i = 0 ; i < sizeof(fileTypeMapping)/sizeof(struct mapping_t) ;i++) {
leihen 12:ba81cc117fb6 74 if (_stricmp(fileTypeMapping[i].key, fext) == 0) {
leihen 12:ba81cc117fb6 75 header["Content-Type"] = fileTypeMapping[i].value;
leihen 12:ba81cc117fb6 76 break;
leihen 12:ba81cc117fb6 77 }
leihen 12:ba81cc117fb6 78 }
leihen 12:ba81cc117fb6 79 }
leihen 12:ba81cc117fb6 80 }
leihen 12:ba81cc117fb6 81
leihen 3:d6224049b3bf 82 void HTTPRequestHandler::handleRequest()
leihen 3:d6224049b3bf 83 {
leihen 3:d6224049b3bf 84 int err = 0;
leihen 3:d6224049b3bf 85
leihen 3:d6224049b3bf 86 switch (msg.request) {
leihen 3:d6224049b3bf 87 case HTTP_RT_GET:
leihen 3:d6224049b3bf 88 INFO("Dispatching GET Request.");
leihen 3:d6224049b3bf 89 err = handleGetRequest();
leihen 3:d6224049b3bf 90 break;
leihen 3:d6224049b3bf 91
leihen 4:d065642c32cc 92 case HTTP_RT_POST:
leihen 4:d065642c32cc 93 INFO("Dispatching POST request.");
leihen 4:d065642c32cc 94 err = handlePostRequest();
leihen 4:d065642c32cc 95 break;
leihen 3:d6224049b3bf 96
leihen 4:d065642c32cc 97 case HTTP_RT_PUT:
leihen 4:d065642c32cc 98 INFO("Dispatching PUT request.");
leihen 4:d065642c32cc 99 err = handlePutRequest();
leihen 4:d065642c32cc 100 break;
leihen 3:d6224049b3bf 101
leihen 3:d6224049b3bf 102 default:
leihen 3:d6224049b3bf 103 INFO("Error in handleRequest, unhandled request type.");
leihen 9:c2a1462b9b71 104 err = HTTP_NotImplemented;
leihen 3:d6224049b3bf 105 break;
leihen 3:d6224049b3bf 106 }
leihen 3:d6224049b3bf 107
leihen 3:d6224049b3bf 108 // if any of these functions returns a negative number, call the error handler
leihen 3:d6224049b3bf 109 if (err > 0) {
leihen 3:d6224049b3bf 110 handleError(err);
leihen 3:d6224049b3bf 111 }
leihen 3:d6224049b3bf 112 }
leihen 3:d6224049b3bf 113
leihen 13:aa5338a5e452 114 static const char* szErrorPage = "<HTML><HEAD><META content=\"text/html\" http-equiv=Content-Type></HEAD><BODY><h1>Error</h1><P>HTTPServer Error<P></BODY></HTML>\r\n\r\n";
leihen 3:d6224049b3bf 115
leihen 3:d6224049b3bf 116 void HTTPRequestHandler::handleError(int errorCode, HTTPHeaders* header)
leihen 3:d6224049b3bf 117 {
leihen 3:d6224049b3bf 118 INFO("Handling error !");
hudakz 17:8bcc62289a07 119 tcp->set_blocking(false);
leihen 11:3943841e1798 120 sprintf(buffer,"HTTP/1.1 %d Error\r\n", errorCode);
hudakz 17:8bcc62289a07 121 tcp->send(buffer, strlen(buffer));
leihen 3:d6224049b3bf 122 sprintf(buffer, "Content-Length: %d\r\n", strlen(szErrorPage));
hudakz 17:8bcc62289a07 123 tcp->send(buffer, strlen(buffer));
leihen 3:d6224049b3bf 124 if (header == NULL) {
leihen 3:d6224049b3bf 125 sprintf(buffer, "Content-Type: text/html\r\nServer: mbed embedded\r\n\n\r");
hudakz 17:8bcc62289a07 126 tcp->send(buffer, strlen(buffer));
leihen 3:d6224049b3bf 127 }
leihen 3:d6224049b3bf 128 else {
leihen 3:d6224049b3bf 129 for ( map<const char*, const char*>::iterator cIter = header->begin() ; cIter != header->end() ; cIter ++) {
hudakz 17:8bcc62289a07 130 tcp->send((char*)cIter->first, strlen(cIter->first));
hudakz 17:8bcc62289a07 131 tcp->send(": ", 2);
hudakz 17:8bcc62289a07 132 tcp->send((char*)cIter->second, strlen(cIter->second));
hudakz 17:8bcc62289a07 133 tcp->send("\r\n",2);
leihen 3:d6224049b3bf 134 }
hudakz 17:8bcc62289a07 135 tcp->send("\r\n",2);
leihen 3:d6224049b3bf 136 }
hudakz 17:8bcc62289a07 137 tcp->send((char*)szErrorPage, strlen(szErrorPage));
leihen 3:d6224049b3bf 138 }
leihen 3:d6224049b3bf 139
leihen 3:d6224049b3bf 140
leihen 7:cb7fec1265b5 141 void HTTPRequestHandler::startResponse(int returnCode, long nLen, HTTPHeaders* header)
leihen 3:d6224049b3bf 142 {
leihen 7:cb7fec1265b5 143 INFO("Starting response (%ld bytes in total)!", nLen);
hudakz 17:8bcc62289a07 144 tcp->set_blocking(false);
leihen 11:3943841e1798 145 sprintf(buffer, "HTTP/1.1 %d OK\r\n", returnCode);
hudakz 17:8bcc62289a07 146 tcp->send(buffer, strlen(buffer));
leihen 7:cb7fec1265b5 147 sprintf(buffer, "Content-Length: %ld\r\n", nLen); // Add 2 chars for the terminating CR+LF
hudakz 17:8bcc62289a07 148 tcp->send(buffer, strlen(buffer));
leihen 13:aa5338a5e452 149 INFO("Sending standard headers !");
leihen 3:d6224049b3bf 150 if (header == NULL) {
hudakz 17:8bcc62289a07 151 tcp->send((char*)hdrStandard, strlen(hdrStandard));
leihen 3:d6224049b3bf 152 }
leihen 3:d6224049b3bf 153 else {
leihen 3:d6224049b3bf 154 for ( map<const char*, const char*>::iterator cIter = header->begin() ; cIter != header->end() ; cIter ++) {
hudakz 17:8bcc62289a07 155 tcp->send((char*)cIter->first, strlen(cIter->first));
hudakz 17:8bcc62289a07 156 tcp->send(": ", 2);
hudakz 17:8bcc62289a07 157 tcp->send((char*)cIter->second, strlen(cIter->second));
hudakz 17:8bcc62289a07 158 tcp->send("\r\n\r\n",2);
leihen 3:d6224049b3bf 159 }
hudakz 17:8bcc62289a07 160 tcp->send("\r\n", 2);
leihen 3:d6224049b3bf 161 }
leihen 13:aa5338a5e452 162 INFO("Proceeding !");
leihen 3:d6224049b3bf 163 // other content must be sent using the 'processResponse' function
leihen 3:d6224049b3bf 164 }
leihen 3:d6224049b3bf 165
leihen 3:d6224049b3bf 166 void HTTPRequestHandler::processResponse(int nLen, char* body)
leihen 3:d6224049b3bf 167 {
leihen 7:cb7fec1265b5 168 INFO("Processing Response (%d bytes)!\n",nLen);
hudakz 17:8bcc62289a07 169 tcp->send(body, nLen);
leihen 3:d6224049b3bf 170 }
leihen 3:d6224049b3bf 171
leihen 3:d6224049b3bf 172 void HTTPRequestHandler::endResponse()
leihen 3:d6224049b3bf 173 {
leihen 3:d6224049b3bf 174 INFO("Ending Response !");
leihen 3:d6224049b3bf 175 }