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https://git.hardenedbsd.org/hardenedbsd/HardenedBSD.git
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175 lines
3.0 KiB
C
175 lines
3.0 KiB
C
/* Library for ftpd clients.(libftp)
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Copyright by Oleg Orel
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All rights reserved.
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This library is desined for free, non-commercial software creation.
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It is changeable and can be improved. The author would greatly appreciate
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any advises, new components and patches of the exist
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ing programs.
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Commercial usage is also possible with participation of it's author.
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*/
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#include "FtpLibrary.h"
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#include <unistd.h>
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int FtpRead(FTP *con)
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{
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int c;
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if ( con -> mode == 'I' )
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return FtpGetc(con,FTPDATA(con));
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if ( con->ch != EOF )
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{
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c=con->ch;
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con->ch=EOF;
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return c;
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}
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c=FtpGetc(con,FTPDATA(con));
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if ( c == Ctrl('M') )
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{
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c = FtpGetc(con,FTPDATA(con));
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if ( c == Ctrl('J') )
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return '\n';
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con->ch = c;
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return Ctrl('M');
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}
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return c;
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}
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int FtpWrite(FTP *ftp,char c)
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{
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if ( ftp -> mode == 'I' || c != '\n' )
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return FtpPutc(ftp,FTPDATA(ftp),c);
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FtpPutc(ftp,FTPDATA(ftp),Ctrl('M'));
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return FtpPutc(ftp,FTPDATA(ftp),Ctrl('J'));
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}
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int FtpGetc(FTP *ftp,FILE *fp)
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{
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fd_set fds;
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char c;
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FD_ZERO(&fds);
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FD_SET(fileno(fp),&fds);
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if (select(getdtablesize(), &fds, 0, 0, &(ftp->timeout))<1)
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return EXIT(ftp,QUIT);
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if (read(fileno(fp),&c,1)<1)
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return EOF;
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if (ftp->hash!=NULL) (*ftp->hash)(ftp,1);
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return (int)c;
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}
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STATUS FtpPutc(FTP *ftp,FILE *fp,char c)
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{
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fd_set fds;
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FD_ZERO(&fds);
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FD_SET(fileno(fp),&fds);
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if (select(getdtablesize(), 0, &fds, 0, &(ftp->timeout))<1)
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return EXIT(ftp,QUIT);
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if (write(fileno(fp),&c,1)!=1)
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return EXIT(ftp,QUIT);
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if (ftp->hash!=NULL) (*ftp->hash)(ftp,1);
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return 0;
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}
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STATUS FtpReadBlock(FTP *ftp, char *buffer, int size)
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{
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fd_set fds;
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register int rsize;
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FD_ZERO(&fds);
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FD_SET(fileno(FTPDATA(ftp)),&fds);
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if (select(getdtablesize(), &fds,0, 0, &(ftp->timeout))<1)
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return EXIT(ftp,QUIT);
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if ((rsize=read(fileno(FTPDATA(ftp)),buffer,size))<0)
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return EXIT(ftp,QUIT);
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if (ftp->hash!=NULL && rsize!=0) (*ftp->hash)(ftp,rsize);
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if (ftp->mode == 'A')
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{
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char buffer2[size];
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register int i,ii;
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for (i=0,ii=0;i<rsize;i++,ii++)
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if (buffer[i]==Ctrl('M')&&buffer[i+1]==Ctrl('J'))
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buffer2[ii]='\n',i++;
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else
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buffer2[ii]=buffer[i];
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rsize=ii;
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bcopy(buffer2,buffer,rsize);
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}
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return rsize;
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}
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STATUS FtpWriteBlock(FTP *ftp, char *buffer, int size)
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{
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fd_set fds;
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register int wsize;
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char buffer2[size*2];
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FD_ZERO(&fds);
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FD_SET(fileno(FTPDATA(ftp)),&fds);
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if (select(getdtablesize(), 0, &fds, 0, &(ftp->timeout))<1)
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return EXIT(ftp,QUIT);
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if (ftp->mode=='A')
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{
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register int i,ii;
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for(i=0,ii=0;i<size;i++,ii++)
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if (buffer[i]=='\n')
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buffer2[ii++]=Ctrl('M'),buffer2[ii]=Ctrl('J');
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else
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buffer2[ii]=buffer[i];
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buffer=buffer2;
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size=ii;
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}
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if ((wsize=write(fileno(FTPDATA(ftp)),buffer,size))!=size)
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return EXIT(ftp,QUIT);
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if ( ftp->hash!=NULL && wsize!=0 ) (*ftp->hash)(ftp,wsize);
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return wsize;
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}
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