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Program Listing for:  myftpmain.cpp
Project:  ftpdll
Namespace:  c++
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// myftpmain.cpp // various projects // scott laing // // main file for ftp project, basically these are dll // functions that use inet.lib stuff to send a file to a web // site. the default protocol is ftp, this could be changed. // for help on windows inet.lib look up help on functions like // InternetOpen() #include <windows.h> #include <wininet.h> #include <stdio.h> #include <stdlib.h> #include <time.h> // function prototypes - in this file for convenience since small project extern "C" __declspec(dllexport) int SendFileFtp(char *sRemote, char *sLocal, char *writeName); extern "C" __declspec(dllexport) int SendFileFtpPass(char *sRemote, char *sLocal, char *writeName, char *logName, char *logPass); // actual function bodies // note return value of 1 means success, negative return values correspond // to the error type. should add on more error friendly tracking at some // point but this is quick and dirty. extern "C" __declspec(dllexport) int SendFileFtp(char *sRemote, char *sLocal, char *writeName) { bool error = 0; int bret = 1; //CFile uploadFile; FILE *fpSendFile; HINTERNET hIS, hIC, hIF; DWORD dwBytes; long fsize; //CString writefile, write2; fpSendFile = fopen( sLocal, "rb"); if (! fpSendFile ) { //MessageBox("Couldn't open local file!"); return -1; } if (fseek( fpSendFile, 0, SEEK_END)) { return -20; } if ( (fsize = ftell( fpSendFile)) == -1L ) { return -21; } if (fseek( fpSendFile, 0, SEEK_SET )) { return -20; } //if (! bUsingProxy) // new logic, test for direct, if not try proxy, then if problem quit // MFUPLOAD is just process name, could be anything, see function // help for more info. hIS = InternetOpen("MFUPLOAD", INTERNET_OPEN_TYPE_DIRECT, NULL, NULL, 0); // direct failure, try proxy if (! hIS ) { hIS = InternetOpen("MFUPLOAD", INTERNET_OPEN_TYPE_PROXY, NULL, NULL, 0); } // proxy and direct connect failed, close file and abort if (! hIS) { //MessageBox("Trouble opening Internet connection... Make sure you are on the net!"); fclose(fpSendFile); return -2; } hIC = InternetConnect(hIS, sRemote, INTERNET_DEFAULT_FTP_PORT, NULL, NULL, INTERNET_SERVICE_FTP, 0, 0); if (! hIC) { //MessageBox("Trouble creating Internet connection"); InternetCloseHandle(hIS); fclose(fpSendFile); return -3; } hIF = FtpOpenFile(hIC, writeName, GENERIC_WRITE, FTP_TRANSFER_TYPE_BINARY, 0); if (! hIF) { //MessageBox("Trouble creating server write file"); InternetCloseHandle(hIC); InternetCloseHandle(hIS); fclose(fpSendFile); return -4; } char *pbuf; pbuf = new char[201]; // put below in block to save memory... // nick says you can use blocks by themselves, so i gotta do it // for fun at least once, nick is chess god friend in l.a., c guru { int n; long curpos; long readnum; long nBytesRead; // setup progress bar stuff int iquit = 0; // loop through local file reading 200 bytes at a time // and writing it to server file, with error checking for (n=0;1;n++) { curpos = n*200; readnum = 200; // 200 more would exceed file len, set readnum // to a lesser amt if (curpos + 200 > fsize ) { readnum = fsize - curpos; // we're already done if this true if (readnum == 0) { break; } // this is last chunk of file to read, set ending flag iquit = 1; } // shd never happen, i'm paranoid if (readnum > 200) { //MessageBox("Logic error, file not written, notify programmer"); bret = -16; break; } // read in from local file readnum bytes // this sizeof(char) shit is for unicode, I assume this is // good old one for our example. those modifying for japanese // should look at size_t stuff see fread definition nBytesRead = fread( pbuf, sizeof( char ), readnum, fpSendFile ); if (nBytesRead != readnum ) { //MessageBox("Trouble reading local data file, bytes missing!"); bret = -17; break; } // write those bytes to target on server if (! InternetWriteFile(hIF, pbuf, readnum, &dwBytes) ) { //MessageBox("Trouble writing data file, write file fx"); bret = -18; break; } if (readnum != dwBytes ) { //MessageBox("Trouble writing data file, bytes not written fully!"); bret = -19; break; } // one way out of loop, we've finished file if (iquit) { break; } } } // close files InternetCloseHandle(hIF); fclose(fpSendFile); // ah, the wonders of c++ delete [] pbuf; InternetCloseHandle(hIC); InternetCloseHandle(hIS); // success, if bret == 1 return bret; } extern "C" __declspec(dllexport) int SendFileFtpPass(char *sRemote, char *sLocal, char *writeName, char *logName, char *logPass) //int CMassfileDlg::SendFile(CString sLocal, CString sRemote) { bool error = 0; int bret = 1; //CFile uploadFile; FILE *fpSendFile; HINTERNET hIS, hIC, hIF; DWORD dwBytes; long fsize; //CString writefile, write2; fpSendFile = fopen( sLocal, "rb"); if (! fpSendFile ) { //MessageBox("Couldn't open local file!"); return -1; } if (fseek( fpSendFile, 0, SEEK_END)) { return -20; } if ( (fsize = ftell( fpSendFile)) == -1L ) { return -21; } if (fseek( fpSendFile, 0, SEEK_SET )) { return -20; } //if (! bUsingProxy) // new logic, test for direct, if not try proxy, then if problem quit // MFUPLOAD is just process name, could be anything, see function // help for more info. hIS = InternetOpen("MFUPLOAD", INTERNET_OPEN_TYPE_DIRECT, NULL, NULL, 0); // direct failure, try proxy if (! hIS ) { hIS = InternetOpen("MFUPLOAD", INTERNET_OPEN_TYPE_PROXY, NULL, NULL, 0); } // proxy and direct connect failed, close file and abort if (! hIS) { //MessageBox("Trouble opening Internet connection... Make sure you are on the net!"); fclose(fpSendFile); return -2; } hIC = InternetConnect(hIS, sRemote, INTERNET_DEFAULT_FTP_PORT, logName, logPass, INTERNET_SERVICE_FTP, 0, 0); if (! hIC) { //MessageBox("Trouble creating Internet connection"); InternetCloseHandle(hIS); fclose(fpSendFile); return -3; } hIF = FtpOpenFile(hIC, writeName, GENERIC_WRITE, FTP_TRANSFER_TYPE_BINARY, 0); if (! hIF) { //MessageBox("Trouble creating server write file"); InternetCloseHandle(hIC); InternetCloseHandle(hIS); fclose(fpSendFile); return -4; } char *pbuf; pbuf = new char[201]; // put below in block to save memory... // nick says you can use blocks by themselves, so i gotta do it // for fun at least once, nick is chess god friend in l.a., c guru { int n; long curpos; long readnum; long nBytesRead; // setup progress bar stuff int iquit = 0; // loop through local file reading 200 bytes at a time // and writing it to server file, with error checking for (n=0;1;n++) { curpos = n*200; readnum = 200; // 200 more would exceed file len, set readnum // to a lesser amt if (curpos + 200 > fsize ) { readnum = fsize - curpos; // we're already done if this true if (readnum == 0) { break; } // this is last chunk of file to read, set ending flag iquit = 1; } // shd never happen, i'm paranoid if (readnum > 200) { //MessageBox("Logic error, file not written, notify programmer"); bret = -16; break; } // read in from local file readnum bytes // this sizeof(char) shit is for unicode, I assume this is // good old one for our example. those modifying for japanese // should look at size_t stuff see fread definition nBytesRead = fread( pbuf, sizeof( char ), readnum, fpSendFile ); if (nBytesRead != readnum ) { //MessageBox("Trouble reading local data file, bytes missing!"); bret = -17; break; } // write those bytes to target on server if (! InternetWriteFile(hIF, pbuf, readnum, &dwBytes) ) { //MessageBox("Trouble writing data file, write file fx"); bret = -18; break; } if (readnum != dwBytes ) { //MessageBox("Trouble writing data file, bytes not written fully!"); bret = -19; break; } // one way out of loop, we've finished file if (iquit) { break; } } } // close files InternetCloseHandle(hIF); fclose(fpSendFile); // ah, the wonders of c++ delete [] pbuf; InternetCloseHandle(hIC); InternetCloseHandle(hIS); // success, if bret == 1 return bret; }


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