Renesas / HttpServer_snapshot_mbed-os

HttpServer Library for "mbed-os" which added a snapshot handler.

Dependents:   GR-PEACH-webcam GR-Boards_WebCamera GR-Boards_WebCamera GR-Boards_WebCamera

Fork of HttpServer_snapshot by Renesas

Handler/FSHandler.cpp@18:673d663a1ed7, 2019-09-13 (annotated)

Committer:
dkato
Date:
Fri Sep 13 02:08:33 2019 +0000
Revision:
18:673d663a1ed7
Parent:
11:0700755d64ae 
Add macro HTTP_SERVER_THREAD_MAX (default 1)

Who changed what in which revision?

UserRevisionLine numberNew contents of line
yueee_yt 0:fdf9c2c5200f 1 /*
yueee_yt 0:fdf9c2c5200f 2 Permission is hereby granted, free of charge, to any person obtaining a copy
yueee_yt 0:fdf9c2c5200f 3 of this software and associated documentation files (the "Software"), to deal
yueee_yt 0:fdf9c2c5200f 4 in the Software without restriction, including without limitation the rights
yueee_yt 0:fdf9c2c5200f 5 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
yueee_yt 0:fdf9c2c5200f 6 copies of the Software, and to permit persons to whom the Software is
yueee_yt 0:fdf9c2c5200f 7 furnished to do so, subject to the following conditions:
yueee_yt 4:1b6b021ee21d 8
yueee_yt 0:fdf9c2c5200f 9 The above copyright notice and this permission notice shall be included in
yueee_yt 0:fdf9c2c5200f 10 all copies or substantial portions of the Software.
yueee_yt 4:1b6b021ee21d 11
yueee_yt 0:fdf9c2c5200f 12 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
yueee_yt 0:fdf9c2c5200f 13 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
yueee_yt 0:fdf9c2c5200f 14 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
yueee_yt 0:fdf9c2c5200f 15 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
yueee_yt 0:fdf9c2c5200f 16 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
yueee_yt 0:fdf9c2c5200f 17 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
yueee_yt 0:fdf9c2c5200f 18 THE SOFTWARE.
yueee_yt 0:fdf9c2c5200f 19 */
yueee_yt 5:b8f6a11c70db 20 //#define _DEBUG_FS_HANDLER
yueee_yt 0:fdf9c2c5200f 21
yueee_yt 0:fdf9c2c5200f 22 #include "FSHandler.h"
yueee_yt 0:fdf9c2c5200f 23
yueee_yt 0:fdf9c2c5200f 24 #define CHUNK_SIZE 128
yueee_yt 0:fdf9c2c5200f 25
yueee_yt 0:fdf9c2c5200f 26 #define DEFAULT_PAGE "/index.htm"
yueee_yt 0:fdf9c2c5200f 27
1050186 8:a9fb8fe9b8a3 28 Semaphore FSHandler::req_sem(1);
1050186 8:a9fb8fe9b8a3 29
1050186 8:a9fb8fe9b8a3 30
dkato 11:0700755d64ae 31 FSHandler::FSHandler(const char* rootPath, const char* path, TCPSocket* pTCPSocket) : HTTPRequestHandler(rootPath, path, pTCPSocket), m_err404(false)
yueee_yt 0:fdf9c2c5200f 32 {}
yueee_yt 0:fdf9c2c5200f 33
yueee_yt 0:fdf9c2c5200f 34 FSHandler::~FSHandler()
yueee_yt 0:fdf9c2c5200f 35 {
yueee_yt 5:b8f6a11c70db 36 #ifdef _DEBUG_FS_HANDLER
yueee_yt 5:b8f6a11c70db 37 printf("\r\n+++FSHandler destroy\r\n");
yueee_yt 5:b8f6a11c70db 38 #endif
yueee_yt 5:b8f6a11c70db 39 if(m_fp){
yueee_yt 5:b8f6a11c70db 40 #ifdef _DEBUG_FS_HANDLER
yueee_yt 5:b8f6a11c70db 41 printf("\r\n+++FSHandler fclose start\r\n");
yueee_yt 5:b8f6a11c70db 42 #endif
yueee_yt 4:1b6b021ee21d 43 fclose(m_fp);
yueee_yt 4:1b6b021ee21d 44 #ifdef _DEBUG_FS_HANDLER
yueee_yt 5:b8f6a11c70db 45 printf("\r\n+++FSHandler fclose end\r\n");
yueee_yt 5:b8f6a11c70db 46 #endif
yueee_yt 5:b8f6a11c70db 47
yueee_yt 5:b8f6a11c70db 48 }
yueee_yt 5:b8f6a11c70db 49 #ifdef _DEBUG_FS_HANDLER
yueee_yt 4:1b6b021ee21d 50 printf("\r\nHandler destroyed\r\n");
yueee_yt 4:1b6b021ee21d 51 #endif
yueee_yt 0:fdf9c2c5200f 52 }
yueee_yt 0:fdf9c2c5200f 53
yueee_yt 0:fdf9c2c5200f 54 //static init
yueee_yt 0:fdf9c2c5200f 55 map<string,string> FSHandler::m_lFsPath = map<string,string>();
yueee_yt 0:fdf9c2c5200f 56
yueee_yt 0:fdf9c2c5200f 57 void FSHandler::mount(const string& fsPath, const string& rootPath)
yueee_yt 0:fdf9c2c5200f 58 {
yueee_yt 4:1b6b021ee21d 59 m_lFsPath[rootPath]=fsPath;
yueee_yt 0:fdf9c2c5200f 60 }
yueee_yt 0:fdf9c2c5200f 61
yueee_yt 0:fdf9c2c5200f 62 void FSHandler::doGet()
yueee_yt 0:fdf9c2c5200f 63 {
1050186 8:a9fb8fe9b8a3 64 req_sem.wait();
yueee_yt 4:1b6b021ee21d 65 #ifdef _DEBUG_FS_HANDLER
yueee_yt 4:1b6b021ee21d 66 printf("\r\nIn FSHandler::doGet() - rootPath=%s, path=%s\r\n", rootPath().c_str(), path().c_str());
yueee_yt 4:1b6b021ee21d 67 #endif
yueee_yt 4:1b6b021ee21d 68 //FIXME: Translate path to local/path
yueee_yt 4:1b6b021ee21d 69 string checkedRootPath = rootPath();
yueee_yt 4:1b6b021ee21d 70 if(checkedRootPath.empty())
yueee_yt 4:1b6b021ee21d 71 checkedRootPath="/";
yueee_yt 4:1b6b021ee21d 72 string filePath = m_lFsPath[checkedRootPath];
yueee_yt 4:1b6b021ee21d 73 if (path().size() > 1) {
yueee_yt 4:1b6b021ee21d 74 filePath += path();
yueee_yt 4:1b6b021ee21d 75 } else {
yueee_yt 4:1b6b021ee21d 76 filePath += DEFAULT_PAGE;
yueee_yt 4:1b6b021ee21d 77 }
yueee_yt 4:1b6b021ee21d 78 #ifdef _DEBUG_FS_HANDLER
yueee_yt 4:1b6b021ee21d 79 printf("Trying to open %s\n", filePath.c_str());
yueee_yt 4:1b6b021ee21d 80 #endif
yueee_yt 4:1b6b021ee21d 81 m_fp = fopen(filePath.c_str(), "r"); //FIXME: if null, error 404
yueee_yt 0:fdf9c2c5200f 82
yueee_yt 4:1b6b021ee21d 83 if(!m_fp) {
yueee_yt 4:1b6b021ee21d 84 m_err404 = true;
yueee_yt 4:1b6b021ee21d 85 setErrCode(404);
yueee_yt 4:1b6b021ee21d 86 const char* msg = "File not found.";
yueee_yt 4:1b6b021ee21d 87 setContentLen(strlen(msg));
yueee_yt 4:1b6b021ee21d 88 respHeaders()["Content-Type"] = "text/html";
yueee_yt 4:1b6b021ee21d 89 respHeaders()["Connection"] = "close";
yueee_yt 4:1b6b021ee21d 90 writeData(msg,strlen(msg)); //Only send header
yueee_yt 4:1b6b021ee21d 91 printf("\r\nExit FSHandler::doGet() w Error 404\r\n");
1050186 8:a9fb8fe9b8a3 92 req_sem.release();
yueee_yt 4:1b6b021ee21d 93 return;
yueee_yt 4:1b6b021ee21d 94 }
yueee_yt 4:1b6b021ee21d 95
yueee_yt 4:1b6b021ee21d 96 //Seek EOF to get length
yueee_yt 4:1b6b021ee21d 97 fseek(m_fp, 0, SEEK_END);
yueee_yt 4:1b6b021ee21d 98 setContentLen( ftell(m_fp) );
yueee_yt 4:1b6b021ee21d 99 fseek(m_fp, 0, SEEK_SET); //Goto SOF
yueee_yt 4:1b6b021ee21d 100
yueee_yt 0:fdf9c2c5200f 101 respHeaders()["Connection"] = "close";
yueee_yt 4:1b6b021ee21d 102 onWriteable();
yueee_yt 4:1b6b021ee21d 103 #ifdef _DEBUG_FS_HANDLER
yueee_yt 4:1b6b021ee21d 104 printf("\r\nExit SimpleHandler::doGet()\r\n");
yueee_yt 4:1b6b021ee21d 105 #endif
1050186 8:a9fb8fe9b8a3 106 req_sem.release();
yueee_yt 0:fdf9c2c5200f 107 }
yueee_yt 0:fdf9c2c5200f 108
yueee_yt 0:fdf9c2c5200f 109 void FSHandler::doPost()
yueee_yt 0:fdf9c2c5200f 110 {
yueee_yt 0:fdf9c2c5200f 111
yueee_yt 0:fdf9c2c5200f 112 }
yueee_yt 0:fdf9c2c5200f 113
yueee_yt 0:fdf9c2c5200f 114 void FSHandler::doHead()
yueee_yt 0:fdf9c2c5200f 115 {
yueee_yt 0:fdf9c2c5200f 116
yueee_yt 0:fdf9c2c5200f 117 }
yueee_yt 0:fdf9c2c5200f 118
yueee_yt 0:fdf9c2c5200f 119 void FSHandler::onReadable() //Data has been read
yueee_yt 0:fdf9c2c5200f 120 {
yueee_yt 0:fdf9c2c5200f 121
yueee_yt 0:fdf9c2c5200f 122 }
yueee_yt 0:fdf9c2c5200f 123
yueee_yt 0:fdf9c2c5200f 124 void FSHandler::onWriteable() //Data has been written & buf is free
yueee_yt 0:fdf9c2c5200f 125 {
yueee_yt 4:1b6b021ee21d 126 #ifdef _DEBUG_FS_HANDLER
yueee_yt 4:1b6b021ee21d 127 printf("\r\nFSHandler::onWriteable() event\r\n");
yueee_yt 4:1b6b021ee21d 128 #endif
yueee_yt 4:1b6b021ee21d 129 if(m_err404) {
yueee_yt 4:1b6b021ee21d 130 //Error has been served, now exit
yueee_yt 4:1b6b021ee21d 131 close();
yueee_yt 4:1b6b021ee21d 132 return;
yueee_yt 4:1b6b021ee21d 133 }
yueee_yt 4:1b6b021ee21d 134
yueee_yt 4:1b6b021ee21d 135 static char rBuf[CHUNK_SIZE];
yueee_yt 4:1b6b021ee21d 136 while(true) {
yueee_yt 4:1b6b021ee21d 137 int len = fread(rBuf, 1, CHUNK_SIZE, m_fp);
yueee_yt 4:1b6b021ee21d 138 if(len>0) {
yueee_yt 4:1b6b021ee21d 139 int writtenLen = writeData(rBuf, len);
yueee_yt 4:1b6b021ee21d 140 if(writtenLen < 0) { //Socket error
yueee_yt 4:1b6b021ee21d 141 #ifdef _DEBUG_FS_HANDLER
yueee_yt 4:1b6b021ee21d 142 printf("FSHandler: Socket error %d\n", writtenLen);
yueee_yt 4:1b6b021ee21d 143 #endif
yueee_yt 5:b8f6a11c70db 144 /** Not Work
yueee_yt 5:b8f6a11c70db 145 if(writtenLen == TCPSOCKET_MEM) {
yueee_yt 5:b8f6a11c70db 146 fseek(m_fp, -len, SEEK_CUR);
yueee_yt 5:b8f6a11c70db 147 return; //Wait for the queued TCP segments to be transmitted
yueee_yt 5:b8f6a11c70db 148 } else {
yueee_yt 5:b8f6a11c70db 149 //This is a critical error
yueee_yt 5:b8f6a11c70db 150 **/
yueee_yt 5:b8f6a11c70db 151 close();
yueee_yt 5:b8f6a11c70db 152 return;
yueee_yt 5:b8f6a11c70db 153 /**
yueee_yt 5:b8f6a11c70db 154 }
yueee_yt 5:b8f6a11c70db 155 **/
yueee_yt 4:1b6b021ee21d 156 } else if(writtenLen < len) { //Short write, socket's buffer is full
yueee_yt 4:1b6b021ee21d 157 fseek(m_fp, writtenLen - len, SEEK_CUR);
yueee_yt 4:1b6b021ee21d 158 return;
yueee_yt 4:1b6b021ee21d 159 }
yueee_yt 4:1b6b021ee21d 160 } else {
yueee_yt 4:1b6b021ee21d 161 close(); //Data written, we can close the connection
yueee_yt 4:1b6b021ee21d 162 return;
yueee_yt 0:fdf9c2c5200f 163 }
yueee_yt 0:fdf9c2c5200f 164 }
yueee_yt 0:fdf9c2c5200f 165 }
yueee_yt 0:fdf9c2c5200f 166
yueee_yt 0:fdf9c2c5200f 167 void FSHandler::onClose() //Connection is closing
yueee_yt 0:fdf9c2c5200f 168 {
yueee_yt 5:b8f6a11c70db 169 /**
yueee_yt 5:b8f6a11c70db 170 #ifdef _DEBUG_FS_HANDLER
yueee_yt 5:b8f6a11c70db 171 printf("FSHandler: onClose start \r\n");
yueee_yt 5:b8f6a11c70db 172 #endif
yueee_yt 5:b8f6a11c70db 173 if(m_fp){
yueee_yt 5:b8f6a11c70db 174 #ifdef _DEBUG_FS_HANDLER
yueee_yt 5:b8f6a11c70db 175 printf("FSHandler: fclose start \r\n");
yueee_yt 5:b8f6a11c70db 176 #endif
yueee_yt 5:b8f6a11c70db 177 fclose(m_fp);
yueee_yt 5:b8f6a11c70db 178 #ifdef _DEBUG_FS_HANDLER
yueee_yt 5:b8f6a11c70db 179 printf("FSHandler: fclose end \r\n");
yueee_yt 5:b8f6a11c70db 180 #endif
yueee_yt 0:fdf9c2c5200f 181 }
yueee_yt 5:b8f6a11c70db 182 #ifdef _DEBUG_FS_HANDLER
yueee_yt 5:b8f6a11c70db 183 printf("FSHandler: onClose end \r\n");
yueee_yt 5:b8f6a11c70db 184 #endif
yueee_yt 5:b8f6a11c70db 185 **/
yueee_yt 5:b8f6a11c70db 186 }
dkato 11:0700755d64ae 187