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

Handler/FsHandler.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 5:dc88012caef1 1 /* FsHandler.cpp */
leihen 5:dc88012caef1 2 #include "mbed.h"
leihen 5:dc88012caef1 3 #include "FsHandler.h"
leihen 13:aa5338a5e452 4 #define DEBUG
leihen 16:cc3f5c53d0d5 5 #include "hl_debug.h"
leihen 5:dc88012caef1 6
hudakz 17:8bcc62289a07 7 DigitalOut led1(LED1);
leihen 5:dc88012caef1 8
leihen 12:ba81cc117fb6 9 static int matchstrings(const char* one, const char* two)
leihen 12:ba81cc117fb6 10 {
leihen 12:ba81cc117fb6 11 int m = 0;
leihen 12:ba81cc117fb6 12
leihen 12:ba81cc117fb6 13 for (m = 0; m < min(strlen(one), strlen(two)) ; m++) {
leihen 12:ba81cc117fb6 14 if (one[m] != two[m])
leihen 12:ba81cc117fb6 15 return m;
leihen 12:ba81cc117fb6 16 }
leihen 12:ba81cc117fb6 17 return m;
leihen 12:ba81cc117fb6 18 }
leihen 5:dc88012caef1 19
leihen 5:dc88012caef1 20 std::map<const char*, const char*> HTTPFsRequestHandler::m_fsMap;
leihen 5:dc88012caef1 21
hudakz 17:8bcc62289a07 22 HTTPFsRequestHandler::HTTPFsRequestHandler(const char* rootPath, const char* localPath, HTTPConnection::HTTPMessage& Msg, TCPSocket* Tcp)
leihen 5:dc88012caef1 23 : HTTPRequestHandler(Msg, Tcp)
leihen 5:dc88012caef1 24 {
hudakz 17:8bcc62289a07 25 INFO("Request handler called.");
leihen 5:dc88012caef1 26 m_rootPath = rootPath;
leihen 5:dc88012caef1 27 m_localPath = localPath;
leihen 5:dc88012caef1 28
leihen 12:ba81cc117fb6 29 string myPath = m_rootPath + m_localPath;
leihen 12:ba81cc117fb6 30
leihen 5:dc88012caef1 31 // Now replace the virtual root path with a mounted device path
leihen 5:dc88012caef1 32 std::map<const char*, const char*>::iterator it;
leihen 12:ba81cc117fb6 33 const char *bestMatch = NULL;
leihen 12:ba81cc117fb6 34 const char *bestMatchExchange = NULL;
leihen 12:ba81cc117fb6 35 int match_ind = -1;
leihen 5:dc88012caef1 36 for (it = m_fsMap.begin() ; it != m_fsMap.end() ; it++) {
leihen 5:dc88012caef1 37 // find best match (if the given logical path is containted in the root
leihen 12:ba81cc117fb6 38 int s = matchstrings(myPath.c_str(), it->second);
leihen 12:ba81cc117fb6 39 INFO("Matching Root %s with handler %s results in %d identical characters\n", myPath.c_str(), it->second, s);
leihen 12:ba81cc117fb6 40 if ((s == strlen(it->second)) && (s > match_ind)) {
leihen 12:ba81cc117fb6 41 match_ind = s;
leihen 12:ba81cc117fb6 42 bestMatch = it->first;
leihen 12:ba81cc117fb6 43 bestMatchExchange = it->second;
leihen 5:dc88012caef1 44 }
leihen 5:dc88012caef1 45 }
leihen 12:ba81cc117fb6 46
leihen 12:ba81cc117fb6 47 if (bestMatch != NULL) {
leihen 12:ba81cc117fb6 48 m_rootPath = bestMatch;
leihen 12:ba81cc117fb6 49 m_localPath = string(myPath).substr(strlen(bestMatchExchange));
leihen 12:ba81cc117fb6 50 }
leihen 12:ba81cc117fb6 51
leihen 5:dc88012caef1 52 handleRequest();
leihen 5:dc88012caef1 53 }
leihen 5:dc88012caef1 54
leihen 5:dc88012caef1 55 HTTPFsRequestHandler::~HTTPFsRequestHandler()
leihen 5:dc88012caef1 56 {
leihen 5:dc88012caef1 57 }
leihen 5:dc88012caef1 58
leihen 5:dc88012caef1 59 int HTTPFsRequestHandler::handleGetRequest()
leihen 5:dc88012caef1 60 {
leihen 12:ba81cc117fb6 61 HTTPHeaders headers;
hudakz 17:8bcc62289a07 62 int retval = 0; //success
leihen 12:ba81cc117fb6 63
leihen 12:ba81cc117fb6 64 if (m_localPath.length() > 4)
leihen 12:ba81cc117fb6 65 getStandardHeaders(headers, m_localPath.substr(m_localPath.length()-4).c_str());
leihen 12:ba81cc117fb6 66 else
leihen 12:ba81cc117fb6 67 getStandardHeaders(headers);
leihen 12:ba81cc117fb6 68
leihen 12:ba81cc117fb6 69 INFO("Handling Get Request (root = %s, local = %s).", m_rootPath.c_str(), m_localPath.c_str());
hudakz 17:8bcc62289a07 70
leihen 5:dc88012caef1 71 std::string reqPath;
leihen 5:dc88012caef1 72
leihen 5:dc88012caef1 73 // Check if we received a directory with the local bath
leihen 5:dc88012caef1 74 if ((m_localPath.length() == 0) || (m_localPath.substr( m_localPath.length()-1, 1) == "/")) {
leihen 5:dc88012caef1 75 // yes, we shall append the default page name
leihen 5:dc88012caef1 76 m_localPath += "index.html";
leihen 5:dc88012caef1 77 }
leihen 5:dc88012caef1 78
leihen 5:dc88012caef1 79 reqPath = m_rootPath + m_localPath;
leihen 5:dc88012caef1 80
leihen 5:dc88012caef1 81 INFO("Mapping \"%s\" to \"%s\"", msg.uri.c_str(), reqPath.c_str());
leihen 5:dc88012caef1 82
leihen 5:dc88012caef1 83 FILE *fp = fopen(reqPath.c_str(), "r");
hudakz 17:8bcc62289a07 84 INFO("fopen(reqPath.c_str()");
leihen 5:dc88012caef1 85 if (fp != NULL) {
hudakz 17:8bcc62289a07 86 INFO("fp != NULL");
leihen 12:ba81cc117fb6 87 char * pBuffer = NULL;
leihen 12:ba81cc117fb6 88 int sz = 8192;
leihen 12:ba81cc117fb6 89 while( pBuffer == NULL) {
leihen 12:ba81cc117fb6 90 sz /= 2;
leihen 12:ba81cc117fb6 91 pBuffer = (char*)malloc(sz);
leihen 12:ba81cc117fb6 92 if (sz < 128)
leihen 12:ba81cc117fb6 93 error ("OutOfMemory");
leihen 12:ba81cc117fb6 94 }
leihen 12:ba81cc117fb6 95
leihen 5:dc88012caef1 96 // File was found and can be returned
hudakz 17:8bcc62289a07 97 INFO("File was found and can be returned");
leihen 5:dc88012caef1 98
leihen 5:dc88012caef1 99 // first determine the size
leihen 5:dc88012caef1 100 fseek(fp, 0, SEEK_END);
leihen 5:dc88012caef1 101 long size = ftell(fp);
leihen 5:dc88012caef1 102 fseek(fp, 0, SEEK_SET);
leihen 5:dc88012caef1 103
leihen 5:dc88012caef1 104 startResponse(200, size);
leihen 5:dc88012caef1 105 while(!feof(fp) && !ferror(fp)) {
leihen 12:ba81cc117fb6 106 int cnt = fread(pBuffer, 1, sz , fp);
leihen 7:cb7fec1265b5 107 if (cnt < 0)
leihen 7:cb7fec1265b5 108 cnt = 0;
leihen 12:ba81cc117fb6 109 processResponse(cnt, pBuffer);
leihen 5:dc88012caef1 110 }
leihen 12:ba81cc117fb6 111 delete pBuffer;
leihen 5:dc88012caef1 112 endResponse();
leihen 5:dc88012caef1 113 fclose(fp);
leihen 5:dc88012caef1 114 }
leihen 5:dc88012caef1 115 else {
leihen 5:dc88012caef1 116 retval = 404;
leihen 5:dc88012caef1 117 ERR("Requested file was not found !");
leihen 5:dc88012caef1 118 }
leihen 5:dc88012caef1 119
leihen 5:dc88012caef1 120 return retval;
leihen 5:dc88012caef1 121 }
leihen 5:dc88012caef1 122
leihen 5:dc88012caef1 123 int HTTPFsRequestHandler::handlePostRequest()
hudakz 17:8bcc62289a07 124 {
hudakz 17:8bcc62289a07 125 INFO("Handling Post Request (msg.uri = %s).", msg.uri.c_str());
hudakz 17:8bcc62289a07 126
hudakz 17:8bcc62289a07 127 if( std::string::npos != msg.uri.find("/toggle") )
hudakz 17:8bcc62289a07 128 {
hudakz 17:8bcc62289a07 129 led1 = !led1;
hudakz 17:8bcc62289a07 130 return 0;
hudakz 17:8bcc62289a07 131 }
hudakz 17:8bcc62289a07 132 else
hudakz 17:8bcc62289a07 133 {
hudakz 17:8bcc62289a07 134 return 404;
hudakz 17:8bcc62289a07 135 }
leihen 5:dc88012caef1 136 }
leihen 5:dc88012caef1 137
leihen 5:dc88012caef1 138 int HTTPFsRequestHandler::handlePutRequest()
leihen 5:dc88012caef1 139 {
leihen 5:dc88012caef1 140 return 404;
hudakz 17:8bcc62289a07 141 }
hudakz 17:8bcc62289a07 142
hudakz 17:8bcc62289a07 143 uint32_t HTTPFsRequestHandler::get_http_param_value(char* param_name)
hudakz 17:8bcc62289a07 144 {
hudakz 17:8bcc62289a07 145 uint8_t * name = 0;
hudakz 17:8bcc62289a07 146 uint8_t * pos2;
hudakz 17:8bcc62289a07 147 uint16_t len = 0;
hudakz 17:8bcc62289a07 148 char value[10];
hudakz 17:8bcc62289a07 149 uint32_t ret = 0;
hudakz 17:8bcc62289a07 150
hudakz 17:8bcc62289a07 151 //msg.attri
hudakz 17:8bcc62289a07 152 if((name = (uint8_t *)strstr(msg.attri, param_name)))
hudakz 17:8bcc62289a07 153 {
hudakz 17:8bcc62289a07 154 name += strlen(param_name) + 1;
hudakz 17:8bcc62289a07 155 pos2 = (uint8_t*)strstr((char*)name, "&");
hudakz 17:8bcc62289a07 156 if(!pos2)
hudakz 17:8bcc62289a07 157 {
hudakz 17:8bcc62289a07 158 pos2 = name + strlen((char*)name);
hudakz 17:8bcc62289a07 159 }
hudakz 17:8bcc62289a07 160 len = pos2 - name;
hudakz 17:8bcc62289a07 161
hudakz 17:8bcc62289a07 162 if(len)
hudakz 17:8bcc62289a07 163 {
hudakz 17:8bcc62289a07 164 strncpy(value, (char*)name, len);
hudakz 17:8bcc62289a07 165 ret = atoi(value);
hudakz 17:8bcc62289a07 166 }
hudakz 17:8bcc62289a07 167 }
hudakz 17:8bcc62289a07 168 return ret;
hudakz 17:8bcc62289a07 169 }
hudakz 17:8bcc62289a07 170