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Handler/FsHandler.cpp@4:2903435e3811, 2016-02-12 (annotated)

Committer:
hjjeon
Date:
Fri Feb 12 07:39:47 2016 +0000
Revision:
4:2903435e3811
Parent:
2:dd293a10a772
Child:
5:3c24e937da61
Add code about FsHandler of get method for students example

Who changed what in which revision?

UserRevisionLine numberNew contents of line
hjjeon 0:e59cc54df17c 1 /* FsHandler.cpp */
hjjeon 0:e59cc54df17c 2 #include "mbed.h"
hjjeon 0:e59cc54df17c 3 #include "FsHandler.h"
hjjeon 0:e59cc54df17c 4 //#define DEBUG
hjjeon 0:e59cc54df17c 5 #include "hl_debug.h"
hjjeon 0:e59cc54df17c 6
hjjeon 0:e59cc54df17c 7 DigitalOut led_red(LED1);
hjjeon 0:e59cc54df17c 8 DigitalOut led_green(LED2);
hjjeon 0:e59cc54df17c 9 DigitalOut led_blue(LED3);
hjjeon 0:e59cc54df17c 10
hjjeon 0:e59cc54df17c 11 DigitalIn din(PC_14);
justinkim 2:dd293a10a772 12 AnalogIn ain0(A0);
justinkim 2:dd293a10a772 13 AnalogIn ain1(A1);
hjjeon 0:e59cc54df17c 14
hjjeon 0:e59cc54df17c 15 static int matchstrings(const char* one, const char* two)
hjjeon 0:e59cc54df17c 16 {
hjjeon 0:e59cc54df17c 17 int m = 0;
hjjeon 0:e59cc54df17c 18
hjjeon 0:e59cc54df17c 19 for (m = 0; m < min(strlen(one), strlen(two)) ; m++) {
hjjeon 0:e59cc54df17c 20 if (one[m] != two[m])
hjjeon 0:e59cc54df17c 21 return m;
hjjeon 0:e59cc54df17c 22 }
hjjeon 0:e59cc54df17c 23 return m;
hjjeon 0:e59cc54df17c 24 }
hjjeon 0:e59cc54df17c 25
hjjeon 0:e59cc54df17c 26 std::map<const char*, const char*> HTTPFsRequestHandler::m_fsMap;
hjjeon 0:e59cc54df17c 27
hjjeon 0:e59cc54df17c 28 HTTPFsRequestHandler::HTTPFsRequestHandler(const char* rootPath, const char* localPath, HTTPConnection::HTTPMessage& Msg, TCPSocketConnection& Tcp)
hjjeon 0:e59cc54df17c 29 : HTTPRequestHandler(Msg, Tcp)
hjjeon 0:e59cc54df17c 30 {
hjjeon 0:e59cc54df17c 31 m_rootPath = rootPath;
hjjeon 0:e59cc54df17c 32 m_localPath = localPath;
hjjeon 0:e59cc54df17c 33
hjjeon 0:e59cc54df17c 34 string myPath = m_rootPath + m_localPath;
hjjeon 0:e59cc54df17c 35
hjjeon 0:e59cc54df17c 36 // Now replace the virtual root path with a mounted device path
hjjeon 0:e59cc54df17c 37 std::map<const char*, const char*>::iterator it;
hjjeon 0:e59cc54df17c 38 const char *bestMatch = NULL;
hjjeon 0:e59cc54df17c 39 const char *bestMatchExchange = NULL;
hjjeon 0:e59cc54df17c 40 int match_ind = -1;
hjjeon 0:e59cc54df17c 41 for (it = m_fsMap.begin() ; it != m_fsMap.end() ; it++) {
hjjeon 0:e59cc54df17c 42 // find best match (if the given logical path is containted in the root
hjjeon 0:e59cc54df17c 43 int s = matchstrings(myPath.c_str(), it->second);
hjjeon 0:e59cc54df17c 44 INFO("Matching Root %s with handler %s results in %d identical characters\n", myPath.c_str(), it->second, s);
hjjeon 0:e59cc54df17c 45 if ((s == strlen(it->second)) && (s > match_ind)) {
hjjeon 0:e59cc54df17c 46 match_ind = s;
hjjeon 0:e59cc54df17c 47 bestMatch = it->first;
hjjeon 0:e59cc54df17c 48 bestMatchExchange = it->second;
hjjeon 0:e59cc54df17c 49 }
hjjeon 0:e59cc54df17c 50 }
hjjeon 0:e59cc54df17c 51
hjjeon 0:e59cc54df17c 52 if (bestMatch != NULL) {
hjjeon 0:e59cc54df17c 53 m_rootPath = bestMatch;
hjjeon 0:e59cc54df17c 54 m_localPath = string(myPath).substr(strlen(bestMatchExchange));
hjjeon 0:e59cc54df17c 55 }
hjjeon 0:e59cc54df17c 56
hjjeon 0:e59cc54df17c 57 handleRequest();
hjjeon 0:e59cc54df17c 58 }
hjjeon 0:e59cc54df17c 59
hjjeon 0:e59cc54df17c 60 HTTPFsRequestHandler::~HTTPFsRequestHandler()
hjjeon 0:e59cc54df17c 61 {
hjjeon 0:e59cc54df17c 62 }
hjjeon 0:e59cc54df17c 63
justinkim 2:dd293a10a772 64 std::map<int, EthernetInterface*> HTTPFsRequestHandler::m_eth_list;
justinkim 2:dd293a10a772 65
hjjeon 0:e59cc54df17c 66 int HTTPFsRequestHandler::handleGetRequest()
hjjeon 0:e59cc54df17c 67 {
hjjeon 0:e59cc54df17c 68 HTTPHeaders headers;
justinkim 2:dd293a10a772 69 EthernetInterface test_eth;
hjjeon 0:e59cc54df17c 70 int retval = 0; //success
hjjeon 0:e59cc54df17c 71
justinkim 2:dd293a10a772 72 if( std::string::npos != msg.uri.find("get_netinfo.cgi") )
hjjeon 0:e59cc54df17c 73 {
justinkim 2:dd293a10a772 74 char buf[256];
hjjeon 4:2903435e3811 75
hjjeon 4:2903435e3811 76 sprintf(buf, "NetinfoCallback({\"mac\":\"%s\",\"ip\":\"%s\",\"sn\":\"%s\",\"gw\":\"%s\",\"temp\":\"%s\"});"
justinkim 2:dd293a10a772 77 ,m_eth_list[0]->getMACAddress(),m_eth_list[0]->getIPAddress(),m_eth_list[0]->getNetworkMask(),m_eth_list[0]->getGateway());
justinkim 2:dd293a10a772 78
justinkim 2:dd293a10a772 79 tcp.send(buf, strlen(buf));
justinkim 2:dd293a10a772 80 }
justinkim 2:dd293a10a772 81
justinkim 2:dd293a10a772 82 else if( std::string::npos != msg.uri.find("get_ain.cgi") )
justinkim 2:dd293a10a772 83 {
justinkim 2:dd293a10a772 84 char buf[256];
hjjeon 0:e59cc54df17c 85
justinkim 2:dd293a10a772 86 sprintf(buf, "AinCallback({\"ain_v0\":\"%.3f\",\"ain_v1\":\"%.3f\"});",ain0.read()*100, ain1.read()*100);
justinkim 2:dd293a10a772 87
justinkim 2:dd293a10a772 88 tcp.send(buf, strlen(buf));
hjjeon 0:e59cc54df17c 89 }
justinkim 2:dd293a10a772 90
hjjeon 0:e59cc54df17c 91 else //read html pages
hjjeon 0:e59cc54df17c 92 {
hjjeon 0:e59cc54df17c 93 if (m_localPath.length() > 4)
hjjeon 0:e59cc54df17c 94 getStandardHeaders(headers, m_localPath.substr(m_localPath.length()-4).c_str());
hjjeon 0:e59cc54df17c 95 else
hjjeon 0:e59cc54df17c 96 getStandardHeaders(headers);
hjjeon 0:e59cc54df17c 97
hjjeon 0:e59cc54df17c 98 INFO("Handling Get Request (root = %s, local = %s).", m_rootPath.c_str(), m_localPath.c_str());
hjjeon 0:e59cc54df17c 99
hjjeon 0:e59cc54df17c 100 std::string reqPath;
hjjeon 0:e59cc54df17c 101
hjjeon 0:e59cc54df17c 102 // Check if we received a directory with the local bath
hjjeon 0:e59cc54df17c 103 if ((m_localPath.length() == 0) || (m_localPath.substr( m_localPath.length()-1, 1) == "/")) {
hjjeon 0:e59cc54df17c 104 // yes, we shall append the default page name
hjjeon 0:e59cc54df17c 105 m_localPath += "index.html";
hjjeon 0:e59cc54df17c 106 }
hjjeon 0:e59cc54df17c 107
hjjeon 0:e59cc54df17c 108 reqPath = m_rootPath + m_localPath;
hjjeon 0:e59cc54df17c 109
hjjeon 0:e59cc54df17c 110 INFO("Mapping \"%s\" to \"%s\"", msg.uri.c_str(), reqPath.c_str());
hjjeon 0:e59cc54df17c 111
hjjeon 0:e59cc54df17c 112 FILE *fp = fopen(reqPath.c_str(), "r");
hjjeon 0:e59cc54df17c 113 if (fp != NULL) {
hjjeon 0:e59cc54df17c 114 char * pBuffer = NULL;
hjjeon 0:e59cc54df17c 115 int sz = 8192;
hjjeon 0:e59cc54df17c 116 while( pBuffer == NULL) {
hjjeon 0:e59cc54df17c 117 sz /= 2;
hjjeon 0:e59cc54df17c 118 pBuffer = (char*)malloc(sz);
hjjeon 0:e59cc54df17c 119 if (sz < 128)
hjjeon 0:e59cc54df17c 120 error ("OutOfMemory");
hjjeon 0:e59cc54df17c 121 }
hjjeon 0:e59cc54df17c 122
hjjeon 0:e59cc54df17c 123 // File was found and can be returned
hjjeon 0:e59cc54df17c 124
hjjeon 0:e59cc54df17c 125 // first determine the size
hjjeon 0:e59cc54df17c 126 fseek(fp, 0, SEEK_END);
hjjeon 0:e59cc54df17c 127 long size = ftell(fp);
hjjeon 0:e59cc54df17c 128 fseek(fp, 0, SEEK_SET);
hjjeon 0:e59cc54df17c 129
hjjeon 0:e59cc54df17c 130 startResponse(200, size);
hjjeon 0:e59cc54df17c 131 while(!feof(fp) && !ferror(fp)) {
hjjeon 0:e59cc54df17c 132 int cnt = fread(pBuffer, 1, sz , fp);
hjjeon 0:e59cc54df17c 133 if (cnt < 0)
hjjeon 0:e59cc54df17c 134 cnt = 0;
hjjeon 0:e59cc54df17c 135 processResponse(cnt, pBuffer);
hjjeon 0:e59cc54df17c 136 }
hjjeon 0:e59cc54df17c 137 delete pBuffer;
hjjeon 0:e59cc54df17c 138 endResponse();
hjjeon 0:e59cc54df17c 139 fclose(fp);
hjjeon 0:e59cc54df17c 140 }
hjjeon 0:e59cc54df17c 141 else {
hjjeon 0:e59cc54df17c 142 retval = 404;
hjjeon 0:e59cc54df17c 143 ERR("Requested file was not found !");
hjjeon 0:e59cc54df17c 144 }
hjjeon 0:e59cc54df17c 145 }
hjjeon 0:e59cc54df17c 146
hjjeon 0:e59cc54df17c 147 return retval;
hjjeon 0:e59cc54df17c 148 }
hjjeon 0:e59cc54df17c 149
hjjeon 0:e59cc54df17c 150 int HTTPFsRequestHandler::handlePostRequest()
hjjeon 0:e59cc54df17c 151 {
hjjeon 0:e59cc54df17c 152
hjjeon 0:e59cc54df17c 153 int pin = 0;
hjjeon 0:e59cc54df17c 154
hjjeon 0:e59cc54df17c 155 if( std::string::npos != msg.uri.find("set_dio.cgi") )
hjjeon 0:e59cc54df17c 156 {
hjjeon 0:e59cc54df17c 157 pin = get_http_param_value("pin");
hjjeon 0:e59cc54df17c 158 if(pin == 8)
hjjeon 0:e59cc54df17c 159 {
hjjeon 0:e59cc54df17c 160 led_red = get_http_param_value("val");
hjjeon 0:e59cc54df17c 161 }
hjjeon 0:e59cc54df17c 162 else if(pin == 9)
hjjeon 0:e59cc54df17c 163 {
hjjeon 0:e59cc54df17c 164 led_green = get_http_param_value("val");
hjjeon 0:e59cc54df17c 165 }
hjjeon 0:e59cc54df17c 166 else if(pin == 5)
hjjeon 0:e59cc54df17c 167 {
hjjeon 0:e59cc54df17c 168 led_blue = get_http_param_value("val");
hjjeon 0:e59cc54df17c 169 }
hjjeon 0:e59cc54df17c 170 else
hjjeon 0:e59cc54df17c 171 {
hjjeon 0:e59cc54df17c 172 WARN("Wrong pin number");
hjjeon 0:e59cc54df17c 173 }
hjjeon 0:e59cc54df17c 174
hjjeon 0:e59cc54df17c 175 return 0;
hjjeon 0:e59cc54df17c 176 }
hjjeon 0:e59cc54df17c 177 else
hjjeon 0:e59cc54df17c 178 {
hjjeon 0:e59cc54df17c 179 return 404;
hjjeon 0:e59cc54df17c 180 }
hjjeon 0:e59cc54df17c 181 }
hjjeon 0:e59cc54df17c 182
hjjeon 0:e59cc54df17c 183 int HTTPFsRequestHandler::handlePutRequest()
hjjeon 0:e59cc54df17c 184 {
hjjeon 0:e59cc54df17c 185 return 404;
hjjeon 0:e59cc54df17c 186 }
hjjeon 0:e59cc54df17c 187
hjjeon 0:e59cc54df17c 188 uint32_t HTTPFsRequestHandler::get_http_param_value(char* param_name)
hjjeon 0:e59cc54df17c 189 {
hjjeon 0:e59cc54df17c 190 uint8_t * name = 0;
hjjeon 0:e59cc54df17c 191 uint8_t * pos2;
hjjeon 0:e59cc54df17c 192 uint16_t len = 0;
hjjeon 0:e59cc54df17c 193 char value[10];
hjjeon 0:e59cc54df17c 194 uint32_t ret = 0;
hjjeon 0:e59cc54df17c 195
hjjeon 0:e59cc54df17c 196 //msg.attri
hjjeon 0:e59cc54df17c 197 if((name = (uint8_t *)strstr(msg.attri, param_name)))
hjjeon 0:e59cc54df17c 198 {
hjjeon 0:e59cc54df17c 199 name += strlen(param_name) + 1;
hjjeon 0:e59cc54df17c 200 pos2 = (uint8_t*)strstr((char*)name, "&");
hjjeon 0:e59cc54df17c 201 if(!pos2)
hjjeon 0:e59cc54df17c 202 {
hjjeon 0:e59cc54df17c 203 pos2 = name + strlen((char*)name);
hjjeon 0:e59cc54df17c 204 }
hjjeon 0:e59cc54df17c 205 len = pos2 - name;
hjjeon 0:e59cc54df17c 206
hjjeon 0:e59cc54df17c 207 if(len)
hjjeon 0:e59cc54df17c 208 {
hjjeon 0:e59cc54df17c 209 strncpy(value, (char*)name, len);
hjjeon 0:e59cc54df17c 210 ret = atoi(value);
hjjeon 0:e59cc54df17c 211 }
hjjeon 0:e59cc54df17c 212 }
hjjeon 0:e59cc54df17c 213 return ret;
hjjeon 0:e59cc54df17c 214 }
hjjeon 0:e59cc54df17c 215
justinkim 2:dd293a10a772 216