/* * bbftpd/bbftpd_store.c * Copyright (C) 1999, 2000, 2001, 2002 IN2P3, CNRS * bbftp@in2p3.fr * http://doc.in2p3.fr/bbftp * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ /**************************************************************************** bbftpd_store.c v 2.0.0 2000/12/19 - Routines creation v 2.0.1 2001/04/17 - Realy wait STARTCHILDTO - Correct indentation - Port to IRIX v 2.0.2 2001/05/09 - Add storeclosecastfile function v 2.1.0 2001/05/30 - Correct syslog level - Reorganise routines as in bbftp_ *****************************************************************************/ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef WITH_GZIP #include #endif extern int transferoption ; extern my64_t filesize ; extern int requestedstreamnumber ; extern int buffersizeperstream ; extern int maxstreams ; extern int *myports ; extern int *mysockets ; extern char *readbuffer ; extern char *compbuffer ; extern int *mychildren ; extern int nbpidchild ; extern int unlinkfile ; extern int incontrolsock ; extern int outcontrolsock ; extern int datato ; extern int sendcontrolto ; extern int state ; extern int childendinerror ; extern int flagsighup ; extern struct timeval tstart ; extern int protocolversion ; extern char currentusername[MAXLEN] ; /******************************************************************************* ** bbftpdstoreclosecastfile : * ** * ** Close CASTOR file * ** * ** OUPUT variable : * ** logmessage : to write the error message in case of error * ** * ** GLOBAL VARIABLE USED : * * ** castfd MODIFIED * ** * ** RETURN: * ** -1 Failed * ** 0 OK * ** * *******************************************************************************/ int bbftpd_storeclosecastfile(char *filename,char *logmessage) { if ( (transferoption & TROPT_RFIO) == TROPT_RFIO ) { #if defined(WITH_RFIO) || defined(WITH_RFIO64) return bbftpd_storeclosecastfile_rfio(filename,logmessage) ; #else return 0 ; #endif } return 0 ; } /******************************************************************************* ** bbftpd_storeutime : * ** * ** Routine to chage access time a file * ** * ** OUPUT variable : * ** logmessage : to write the error message in case of error * ** * ** GLOBAL VARIABLE USED : * * ** transferoption NOT MODIFIED * ** * ** RETURN: * ** -1 Failed * ** 0 OK * ** * *******************************************************************************/ int bbftpd_storeutime(char *filename,struct utimbuf *ftime,char *logmessage) { int retcode ; if ( (transferoption & TROPT_RFIO) == TROPT_RFIO ) { return 0 ; } retcode = utime(filename,ftime) ; if ( retcode < 0 ) { sprintf(logmessage,"Error utime on file %s : %s",filename,strerror(errno)) ; return retcode ; } return 0 ; } /******************************************************************************* ** bbftpd_storechmod : * ** * ** Routine to chmod a file * ** * ** OUPUT variable : * ** logmessage : to write the error message in case of error * ** * ** GLOBAL VARIABLE USED : * * ** transferoption NOT MODIFIED * ** * ** RETURN: * ** -1 Failed * ** 0 OK * ** * *******************************************************************************/ int bbftpd_storechmod(char *filename,int mode,char *logmessage) { int retcode ; if ( (transferoption & TROPT_RFIO) == TROPT_RFIO ) { #if defined(WITH_RFIO) || defined(WITH_RFIO64) return bbftpd_storechmod_rfio(filename,mode,logmessage) ; #else return 0 ; #endif } retcode = chmod(filename,mode) ; if ( retcode < 0 ) { sprintf(logmessage,"Error chmod on file %s : %s",filename,strerror(errno)) ; return retcode ; } return 0 ; } /******************************************************************************* ** bbftpd_storerename : * ** * ** Routine to unlink a file * ** * ** OUPUT variable : * ** logmessage : to write the error message in case of error * ** * ** GLOBAL VARIABLE USED : * * ** transferoption NOT MODIFIED * ** * ** RETURN: * ** -1 Failed * ** 0 OK * ** * *******************************************************************************/ int bbftpd_storerename(char *newfilename,char *oldfilename,char *logmessage) { int retcode ; if ( (transferoption & TROPT_RFIO) == TROPT_RFIO ) { #if defined(WITH_RFIO) || defined(WITH_RFIO64) return bbftpd_storerename_rfio(newfilename,oldfilename,logmessage) ; #else return 0 ; #endif } retcode = rename(newfilename,oldfilename) ; if ( retcode < 0 ) { sprintf(logmessage,"Error renaming %s to %s : %s",newfilename,oldfilename,strerror(errno)) ; return retcode ; } return 0 ; } /******************************************************************************* ** bbftpd_storeunlink : * ** * ** Routine to unlink a file * ** * ** OUPUT variable : * ** logmessage : to write the error message in case of error * ** * ** GLOBAL VARIABLE USED : * * ** transferoption NOT MODIFIED * ** * ** RETURN: * ** -1 Failed * ** 0 OK * ** * *******************************************************************************/ int bbftpd_storeunlink(char *filename) { if ( (transferoption & TROPT_RFIO) == TROPT_RFIO ) { #if defined(WITH_RFIO) || defined(WITH_RFIO64) return bbftpd_storeunlink_rfio(filename) ; #else return 0 ; #endif } unlink(filename) ; return 0 ; } /******************************************************************************* ** bbftpd_storecheckoptions : * ** * ** Routine to check the options parameters * ** * ** OUPUT variable : * ** logmessage : to write the error message in case of error * ** * ** GLOBAL VARIABLE USED : * * ** transferoption POSSIBLY MODIFIED * ** requestedstreamnumber POSSIBLY MODIFIED * ** * ** RETURN: * ** -1 Incorrect options * ** 0 OK * ** * *******************************************************************************/ int bbftpd_storecheckoptions(char *logmessage) { int tmpoptions ; #ifndef WITH_GZIP /* ** Check if Compress is available int case of GZIP option */ if ( (transferoption & TROPT_GZIP) == TROPT_GZIP ) { syslog(BBFTPD_WARNING,"Compression is not available for this server: option ignored") ; transferoption = transferoption & ~TROPT_GZIP ; } #endif /* ** Check if it is a rfio creation */ if ( (transferoption & TROPT_RFIO) == TROPT_RFIO ) { #if defined(WITH_RFIO) || defined(WITH_RFIO64) return bbftpd_storecheckoptions_rfio(logmessage) ; #else sprintf(logmessage,"Fail to store : RFIO not supported") ; return -1 ; #endif } /* ** Check all known options */ tmpoptions = TROPT_TMP | TROPT_ACC | TROPT_MODE | TROPT_DIR | TROPT_GZIP ; transferoption = transferoption & tmpoptions ; /* ** Check the maxstreams */ if ( requestedstreamnumber > maxstreams ) requestedstreamnumber = maxstreams ; return 0 ; } /******************************************************************************* ** bbftpd_storemkdir : * ** * ** Routine to create a bunch of directory * ** * ** INPUT variable : * ** dirname : directory to create NOT MODIFIED * ** recursif : 1 recursif NOT MODIFIED * ** 0 non recursif * ** * ** OUPUT variable : * ** logmessage : to write the error message in case of error * ** * ** TO FREE before any return : dirpath * ** * ** RETURN: * ** -1 Creation failed unrecoverable error * ** 0 OK * ** >0 Creation failed recoverable error * ** * *******************************************************************************/ int bbftpd_storemkdir(char *dirname,char *logmessage,int recursif) { char *dirpath; char *basedir ; char *slash ; int savederrno ; #ifdef STANDART_FILE_CALL struct stat statbuf; #else struct stat64 statbuf ; #endif if ( (transferoption & TROPT_RFIO) == TROPT_RFIO ) { #if defined(WITH_RFIO) || defined(WITH_RFIO64) return bbftpd_storemkdir_rfio(dirname,logmessage,recursif) ; #else sprintf(logmessage,"Fail to mkdir : RFIO not supported") ; return -1 ; #endif } /* ** make a copy of dirname for security */ if ( (dirpath = (char *) malloc (strlen(dirname)+1) ) == NULL ) { sprintf(logmessage,"Error allocating memory for dirpath : %s",strerror(errno)) ; return 1 ; } strcpy (dirpath, dirname); /* ** Strip trailing slash */ strip_trailing_slashes(dirpath) ; slash = dirpath ; if ( recursif == 1 ) { /* ** Recursif, we are going to create all directory */ /* ** If this is an absolute path strip the leading slash */ if ( *dirpath == '/' ) { while (*slash == '/') slash++; } while (1) { slash = (char *) strchr (slash, '/'); if ( slash == NULL ) break ; basedir = dirpath ; /* ** The mkdir and stat calls below appear to be reversed. ** They are not. It is important to call mkdir first and then to ** call stat (to distinguish the three cases) only if mkdir fails. ** The alternative to this approach is to `stat' each directory, ** then to call mkdir if it doesn't exist. But if some other process ** were to create the directory between the stat & mkdir, the mkdir ** would fail with EEXIST. ** We create it with mode = 777 because the umask is set by bbftpd */ *slash = '\0'; if ( mkdir (basedir, 0777) ) { savederrno = errno ; #ifdef STANDART_FILE_CALL if ( stat (basedir,&statbuf ) ) { #else if ( stat64 (basedir,&statbuf ) ) { #endif sprintf(logmessage,"Error creation directory %s (%s)",basedir,strerror(savederrno)) ; /* ** We tell the client not to retry in the following case (even in waiting ** WAITRETRYTIME the problem will not be solved) : ** EACCES : Search permission denied ** EDQUOT : No more quota ** ENOSPC : No more space ** ELOOP : To many symbolic links on path ** ENAMETOOLONG: Path argument too long ** ENOTDIR : A component in path is not a directory ** EROFS : The path prefix resides on a read-only file system. ** ENOENT : A component of the path prefix does not exist or is a null pathname. ** EEXIST : The named file already exists. */ if ( savederrno == EACCES || savederrno == EDQUOT || savederrno == ENOSPC || savederrno == ELOOP || savederrno == ENAMETOOLONG || savederrno == ENOTDIR || savederrno == EROFS || savederrno == ENOENT || savederrno == EEXIST ) { FREE(dirpath) ; return -1 ; } else { FREE(dirpath) ; return 1 ; } } else if ( (statbuf.st_mode & S_IFDIR) != S_IFDIR) { sprintf(logmessage,"%s exists but is not a directory",basedir) ; FREE(dirpath) ; return -1 ; } else { /* ** dirpath already exists and is a directory. */ } } *slash++ = '/'; /* ** Avoid unnecessary calls to `stat' when given ** pathnames containing multiple adjacent slashes. */ while (*slash == '/') slash++; } } /* ** We have created all leading directories so let see the last one */ basedir = dirpath ; if ( mkdir (basedir, 0777) ) { savederrno = errno ; #ifdef STANDART_FILE_CALL if ( stat (basedir,&statbuf ) ) { #else if ( stat64 (basedir,&statbuf ) ) { #endif sprintf(logmessage,"Error creation directory %s (%s)",basedir,strerror(savederrno)) ; /* ** We tell the client not to retry in the following case (even in waiting ** WAITRETRYTIME the problem will not be solved) : ** EACCES : Search permission denied ** EDQUOT : No more quota ** ENOSPC : No more space ** ELOOP : To many symbolic links on path ** ENAMETOOLONG: Path argument too long ** ENOTDIR : A component in path is not a directory ** EROFS : The path prefix resides on a read-only file system. ** ENOENT : A component of the path prefix does not exist or is a null pathname. ** EEXIST : The named file already exists. */ if ( savederrno == EACCES || savederrno == EDQUOT || savederrno == ENOSPC || savederrno == ELOOP || savederrno == ENAMETOOLONG || savederrno == ENOTDIR || savederrno == EROFS || savederrno == ENOENT || savederrno == EEXIST ) { FREE(dirpath) ; return -1 ; } else { FREE(dirpath) ; return 1 ; } } else if ( (statbuf.st_mode & S_IFDIR) != S_IFDIR) { sprintf(logmessage,"%s exists but is not a directory",basedir) ; FREE(dirpath) ; return -1 ; } else { /* ** dirpath already exists and is a directory. */ FREE(dirpath) ; return 0 ; } } FREE(dirpath) ; return 0 ; } /******************************************************************************* ** bbftpd_storecreatefile : * ** * ** Routine to create a file * ** * ** OUTPUT variable : * ** logmessage : to write the error message in case of error * ** * ** GLOBAL VARIABLE USED : * * ** transferoption NOT MODIFIED * ** filesize NOT MODIFIED * ** * ** TO FREE before any return : filepath * ** * ** RETURN: * ** -1 Transfer failed calling has to close the connection no retry * ** 0 OK (Does not mean the transfer is successfull * ** 1 Transfer failed calling has to close the connection * ** * *******************************************************************************/ int bbftpd_storecreatefile(char *filename, char *logmessage) { char *filepath ; int fd ; int lastslash ; int savederrno ; int retcode ; #ifdef STANDART_FILE_CALL off_t toseek ; struct stat statbuf ; #else off64_t toseek ; struct stat64 statbuf ; #endif /* ** Check if it is a rfio creation */ if ( (transferoption & TROPT_RFIO) == TROPT_RFIO ) { #if defined(WITH_RFIO) || defined(WITH_RFIO64) return bbftpd_storecreatefile_rfio(filename,logmessage) ; #else sprintf(logmessage,"Fail to create file : RFIO not supported") ; return -1 ; #endif } /* ** make a copy of filename for security */ if ( (filepath = (char *) malloc (strlen(filename)+1) ) == NULL ) { sprintf(logmessage,"Error allocating memory for filepath : %s",strerror(errno)) ; return 1 ; } strcpy (filepath, filename); /* ** Check if the file exist ** We are going to first see if the directory exist ** and then look at the options ** and then look if the file exist */ lastslash = strlen(filepath) - 1 ; while ( lastslash >= 0 && filepath[lastslash] != '/') lastslash-- ; if ( lastslash == -1 ) { /* ** No slash in the path, that means that we have done a chdir ** before so do not care for the directory problem */ } else if ( lastslash == 0 ) { /* ** A slash in first position so we suppose the "/" directory ** exist ... nothing to do */ } else if ( lastslash == strlen(filepath) - 1 ) { /* ** The filename end with a slash ..... error */ sprintf(logmessage,"Filename %s ends with a /",filepath) ; FREE(filepath) ; return -1 ; } else { filepath[lastslash] = '\0'; /* ** Check the existence of the directory */ #ifdef STANDART_FILE_CALL if ( stat(filepath,&statbuf) < 0 ) { #else if ( stat64(filepath,&statbuf) < 0 ) { #endif /* ** It may be normal to get an error if the directory ** does not exist but some error code must lead ** to the interruption of the transfer: ** EACCES : Search permission denied ** ELOOP : To many symbolic links on path ** ENAMETOOLONG: Path argument too long ** ENOTDIR : A component in path is not a directory */ savederrno = errno ; if ( savederrno == EACCES || savederrno == ELOOP || savederrno == ENAMETOOLONG || savederrno == ENOTDIR ) { sprintf(logmessage,"Error stating directory %s : %s ",filepath,strerror(savederrno)) ; FREE(filepath) ; return -1 ; } else if (savederrno == ENOENT) { /* ** The directory does not exist so check for the TROPT_DIR ** option */ if ( (transferoption & TROPT_DIR ) != TROPT_DIR ) { sprintf(logmessage,"Directory (%s) creation needed but TROPT_DIR not set",filepath) ; FREE(filepath) ; return -1 ; } else { if ( (retcode = bbftpd_storemkdir(filepath,logmessage,1)) != 0 ) { FREE(filepath) ; return retcode ; } filepath[lastslash] = '/'; } } else { sprintf(logmessage,"Error stating directory %s : %s ",filepath,strerror(savederrno)) ; FREE(filepath) ; return 1 ; } } else { /* ** The directory exist, check if it is a directory */ if ( (statbuf.st_mode & S_IFDIR) == S_IFDIR) { /* ** OK correct */ filepath[lastslash] = '/'; } else { sprintf(logmessage,"%s is a not a directory",filepath) ; FREE(filepath) ; return -1 ; } } } /* ** At this stage all directory exists so check for the file */ #ifdef STANDART_FILE_CALL if ( stat(filepath,&statbuf) < 0 ) { #else if ( stat64(filepath,&statbuf) < 0 ) { #endif /* ** It may be normal to get an error if the file ** does not exist but some error code must lead ** to the interruption of the transfer: ** EACCES : Search permission denied ** ELOOP : To many symbolic links on path ** ENAMETOOLONG: Path argument too long ** ENOTDIR : A component in path is not a directory */ savederrno = errno ; if ( savederrno == EACCES || savederrno == ELOOP || savederrno == ENAMETOOLONG || savederrno == ENOTDIR ) { sprintf(logmessage,"Error stating file %s : %s ",filepath,strerror(savederrno)) ; FREE(filepath) ; return -1 ; } else if (savederrno == ENOENT) { /* ** That is normal the file does not exist */ } else { sprintf(logmessage,"Error stating file %s : %s ",filepath,strerror(savederrno)) ; FREE(filepath) ; return 1 ; } } else { /* ** The file exists so check if it is a directory */ if ( (statbuf.st_mode & S_IFDIR) == S_IFDIR) { sprintf(logmessage,"File %s is a directory",filepath) ; FREE(filepath) ; return -1 ; } /* ** check if it is writable */ if ( (statbuf.st_mode & S_IWUSR) != S_IWUSR) { sprintf(logmessage,"File %s is not writable",filepath) ; FREE(filepath) ; return -1 ; } /* ** In order to set correctly the user and group id we ** erase the file first */ unlink(filepath) ; } /* ** We create the file */ #ifdef STANDART_FILE_CALL if ((fd = open(filepath,O_WRONLY|O_CREAT|O_TRUNC,0666)) < 0 ) { #else if ((fd = open64(filepath,O_WRONLY|O_CREAT|O_TRUNC,0666)) < 0 ) { #endif /* ** Depending on errno we are going to tell the client to ** retry or not */ savederrno = errno ; sprintf(logmessage,"Error creation file %s : %s ",filepath,strerror(errno)) ; /* ** We tell the client not to retry in the following case (even in waiting ** WAITRETRYTIME the problem will not be solved) : ** EACCES : Search permission denied ** EDQUOT : No more quota ** ENOSPC : No more space ** ELOOP : To many symbolic links on path ** ENAMETOOLONG: Path argument too long ** ENOTDIR : A component in path is not a directory */ if ( savederrno == EACCES || savederrno == EDQUOT || savederrno == ENOSPC || savederrno == ELOOP || savederrno == ENAMETOOLONG || savederrno == ENOTDIR ) { FREE(filepath) ; return -1 ; } else { FREE(filepath) ; return 1 ; } } if ( filesize == 0 ) { char statmessage[1024]; close(fd) ; sprintf(statmessage,"PUT %s %s 0 0 0.0 0.0", currentusername, filepath); syslog(BBFTPD_NOTICE,statmessage); FREE(filepath) ; return 0 ; } /* ** Lseek to set it to the correct size ** We use toseek because filesize is of type my64t and ** call to lseek can be done with off_t which may be ** of length 64 bits or 32 bits */ /* toseek = filesize-1 ; *#ifdef STANDART_FILE_CALL * if ( lseek(fd,toseek,SEEK_SET) < 0 ) { *#else * if ( lseek64(fd,toseek,SEEK_SET) < 0 ) { *#endif * sprintf(logmessage,"Error seeking file %s : %s ",filepath,strerror(errno)) ; * close(fd) ; * unlink(filepath) ; * free(filepath) ; * return 1 ; * } */ /* ** Write one byte */ /* if ( write(fd,"\0",1) != 1) { * savederrno = errno ; * sprintf(logmessage,"Error writing file %s : %s ",filepath,strerror(errno)) ; * close(fd) ; * unlink(filepath) ; */ /* ** We tell the client not to retry in the following case (even in waiting ** WAITRETRYTIME the problem will not be solved) : ** EDQUOT : No more quota ** ENOSPC : No space on device */ /* if ( savederrno == EDQUOT || * savederrno == ENOSPC ) { * free(filepath) ; * return -1 ; * } else { * free(filepath) ; * return 1 ; * } * } */ /* ** And close the file */ if ( close(fd) < 0 ) { savederrno = errno ; unlink(filepath) ; sprintf(logmessage,"Error closing file %s : %s ",filepath,strerror(savederrno)) ; if ( savederrno == ENOSPC ) { FREE(filepath) ; return -1 ; } else { FREE(filepath) ; return 1 ; } } FREE(filepath) ; return 0 ; } /******************************************************************************* ** bbftpd_storetransferfile : * ** * ** Routine to transfer a file * ** * ** INPUT variable : * ** filename : file to create NOT MODIFIED * ** * ** OUTPUT variable : * ** logmessage : to write the error message in case of error * ** * ** GLOBAL VARIABLE USED : * * ** * ** RETURN: * ** -1 transfer failed unrecoverable error * ** 0 Keep the connection open (does not mean that the file has been * ** successfully transfered) * ** >0 Recoverable error but calling has the cleaning to do * ** * *******************************************************************************/ int bbftpd_storetransferfile(char *filename,int simulation,char *logmessage) { #ifdef STANDART_FILE_CALL off_t nbperchild ; off_t nbtoget; off_t startpoint ; off_t nbget ; struct stat statbuf ; #else off64_t nbperchild ; off64_t nbtoget; off64_t startpoint ; off64_t nbget ; struct stat64 statbuf ; #endif #ifdef WITH_GZIP uLong buflen ; uLong bufcomplen ; #endif int lentowrite; int lenwrited; int datatoreceive; int dataonone; int *pidfree ; int *sockfree ; /* for PASV mode only */ int *portnumber ; int i ; int recsock ; int retcode ; int compressionon ; int nfds ; fd_set selectmask ; struct timeval wait_timer; int fd ; my64_t toprint64 ; struct mess_compress *msg_compress ; struct message *msg ; int waitedtime ; /* ** Check if it is a rfio transfer */ if ( (transferoption & TROPT_RFIO) == TROPT_RFIO ) { #if defined(WITH_RFIO) || defined(WITH_RFIO64) return bbftpd_storetransferfile_rfio(filename,simulation,logmessage) ; #else return 0 ; #endif } if ( protocolversion <= 2 ) { /* Active mode */ portnumber = myports ; } else { sockfree = mysockets ; } nbperchild = filesize/requestedstreamnumber ; pidfree = mychildren ; nbpidchild = 0 ; /* ** unlinkfile is set to one in case of death of a children by a kill -9 ** In this case the child is unable to unlink the file so that ** has to be done by the father */ unlinkfile = 1 ; childendinerror = 0 ; /* No child so no error */ for (i = 1 ; i <= requestedstreamnumber ; i++) { if ( i == requestedstreamnumber ) { startpoint = (i-1)*nbperchild; nbtoget = filesize-(nbperchild*(requestedstreamnumber-1)) ; } else { startpoint = (i-1)*nbperchild; nbtoget = nbperchild ; } if (protocolversion <= 2) { /* ACTIVE MODE */ /* ** Now create the socket to receive */ recsock = 0 ; while (recsock == 0 ) { recsock = bbftpd_createreceivesocket(*portnumber,logmessage) ; } if ( recsock < 0 ) { /* ** We set childendinerror to 1 in order to prevent the father ** to send a BAD message which can desynchronize the client and the ** server (We need only one error message) ** Bug discovered by amlutz on 2000/03/11 */ if ( childendinerror == 0 ) { childendinerror = 1 ; reply(MSG_BAD,logmessage) ; } clean_child() ; return 1 ; } portnumber++ ; } else { /* PASSIVE MODE */ recsock = *sockfree ; sockfree++ ; } /* ** Set flagsighup to zero in order to be able in child ** not to wait STARTCHILDTO if signal was sent before ** entering select. (Seen on Linux with one child) */ flagsighup = 0 ; if ( ( retcode = fork() ) == 0 ) { int ns ; /* ** We are in child */ /* ** Pause until father send a SIGHUP in order to prevent ** child to die before father has started all children */ waitedtime = 0 ; while (flagsighup == 0 && waitedtime < STARTCHILDTO) { wait_timer.tv_sec = 1 ; wait_timer.tv_usec = 0 ; nfds = sysconf(_SC_OPEN_MAX) ; select(nfds,0,0,0,&wait_timer) ; waitedtime = waitedtime + 1 ; } syslog(BBFTPD_DEBUG,"Child %d starting",getpid()) ; /* ** Close all unnecessary stuff */ close(incontrolsock) ; close(outcontrolsock) ; /* ** Check if file exist */ #ifdef STANDART_FILE_CALL if ( stat(filename,&statbuf) < 0 ) { #else if ( stat64(filename,&statbuf) < 0 ) { #endif /* ** If the file does not exist that means that another ** child has detroyed it */ i = errno ; syslog(BBFTPD_ERR,"Error stating file %s : %s ",filename,strerror(errno)) ; close(recsock) ; exit(i) ; } /* ** Open and seek to position */ #ifdef STANDART_FILE_CALL if ((fd = open(filename,O_RDWR)) < 0 ) { #else if ((fd = open64(filename,O_RDWR)) < 0 ) { #endif i = errno ; unlink(filename) ; syslog(BBFTPD_ERR,"Error opening file %s : %s ",filename,strerror(errno)) ; /* ** At this point a non recoverable error is ** EDQUOT : No more quota ** ENOSPC : No more space */ if ( i == EDQUOT || i == ENOSPC ) { close(recsock) ; exit(255) ; } else { close(recsock) ; exit(i) ; } } #ifdef STANDART_FILE_CALL if ( lseek(fd,startpoint,SEEK_SET) < 0 ) { #else if ( lseek64(fd,startpoint,SEEK_SET) < 0 ) { #endif i = errno ; close(fd) ; unlink(filename) ; syslog(BBFTPD_ERR,"error seeking file : %s",strerror(errno)) ; close(recsock) ; exit(i) ; } if ( protocolversion >= 3 ) { if ( (ns = accept(recsock,0,0) ) < 0 ) { i = errno ; close(fd) ; unlink(filename) ; syslog(BBFTPD_ERR,"Error accept socket : %s",strerror(errno)) ; close(recsock) ; exit(i) ; } close(recsock) ; } else { ns = recsock ; } /* ** start the reading loop ** Handle the simulation mode */ if (!simulation) { nbget = 0 ; while ( nbget < nbtoget) { if ( (transferoption & TROPT_GZIP ) == TROPT_GZIP ) { /* ** Receive the header first */ if (readmessage(ns,readbuffer,COMPMESSLEN,datato) < 0 ) { syslog(BBFTPD_ERR,"Error reading compression header") ; close(fd) ; unlink(filename) ; i = ETIMEDOUT ; exit(i) ; } msg_compress = ( struct mess_compress *) readbuffer ; #ifndef WORDS_BIGENDIAN msg_compress->datalen = ntohl(msg_compress->datalen) ; #endif if ( msg_compress->code == DATA_COMPRESS) { compressionon = 1 ; } else { compressionon = 0 ; } datatoreceive = msg_compress->datalen ; } else { /* ** No compression just adjust the length to receive */ if (buffersizeperstream*1024 <= nbtoget-nbget ) { datatoreceive = buffersizeperstream*1024 ; } else { datatoreceive = nbtoget-nbget ; } } /* ** Start the data collection */ dataonone = 0 ; while ( dataonone < datatoreceive ) { nfds = sysconf(_SC_OPEN_MAX) ; FD_ZERO(&selectmask) ; FD_SET(ns,&selectmask) ; wait_timer.tv_sec = datato ; wait_timer.tv_usec = 0 ; if ( (retcode = select(nfds,&selectmask,0,0,&wait_timer) ) == -1 ) { /* ** Select error */ i = errno ; syslog(BBFTPD_ERR,"Error select while receiving : %s",strerror(errno)) ; close(fd) ; unlink(filename) ; close(ns) ; exit(i) ; } else if ( retcode == 0 ) { syslog(BBFTPD_ERR,"Time out while receiving") ; close(fd) ; unlink(filename) ; i=ETIMEDOUT ; close(ns) ; exit(i) ; } else { retcode = recv(ns,&readbuffer[dataonone],datatoreceive-dataonone,0) ; if ( retcode < 0 ) { i = errno ; syslog(BBFTPD_ERR,"Error while receiving : %s",strerror(errno)) ; close(fd) ; unlink(filename) ; close(ns) ; exit(i) ; } else if ( retcode == 0 ) { i = ECONNRESET ; syslog(BBFTPD_ERR,"Connexion breaks") ; close(fd) ; unlink(filename) ; close(ns) ; exit(i) ; } else { dataonone = dataonone + retcode ; } } } /* ** We have received all data needed */ #ifdef WITH_GZIP if ( (transferoption & TROPT_GZIP ) == TROPT_GZIP ) { if ( compressionon == 1 ) { bufcomplen = buffersizeperstream*1024 ; buflen = dataonone ; retcode = uncompress((Bytef *) compbuffer, &bufcomplen, (Bytef *) readbuffer, buflen) ; if ( retcode != 0 ) { i = EILSEQ ; syslog(BBFTPD_ERR,"Error while decompressing %d ",retcode) ; close(fd) ; unlink(filename) ; close(ns) ; exit(i) ; } memcpy(readbuffer,compbuffer,buffersizeperstream*1024) ; lentowrite = bufcomplen ; } else { lentowrite = dataonone ; } } else { lentowrite = dataonone ; } #else lentowrite = dataonone ; #endif /* ** Write it to the file */ lenwrited = 0 ; while ( lenwrited < lentowrite ) { if ( (retcode = write(fd,&readbuffer[lenwrited],lentowrite-lenwrited)) < 0 ) { i = errno ; syslog(BBFTPD_ERR,"error writing file : %s",strerror(errno)) ; close(fd) ; unlink(filename) ; if ( i == EDQUOT || i == ENOSPC ) { close(ns) ; exit(255) ; } else { close(ns) ; exit(i) ; } } lenwrited = lenwrited + retcode ; } nbget = nbget+lenwrited ; } /* ** All data have been received so send the ACK message */ msg = (struct message *) readbuffer ; msg->code = MSG_ACK ; msg->msglen = 0 ; if ( writemessage(ns,readbuffer,MINMESSLEN,sendcontrolto) < 0 ) { close(fd) ; unlink(filename) ; syslog(BBFTPD_ERR,"Error sending ACK ") ; close(ns) ; exit(ETIMEDOUT) ; } toprint64 = nbget ; syslog(BBFTPD_DEBUG,"Child received %" LONG_LONG_FORMAT " bytes ; end correct ",toprint64) ; } close(fd) ; close(ns) ; exit(0) ; } else { /* ** We are in father */ if ( retcode == -1 ) { /* ** Fork failed ... */ syslog(BBFTPD_ERR,"fork failed : %s",strerror(errno)) ; unlink(filename) ; sprintf(logmessage,"fork failed : %s ",strerror(errno)) ; if ( childendinerror == 0 ) { childendinerror = 1 ; reply(MSG_BAD,logmessage) ; } clean_child() ; return 1 ; } else { nbpidchild++ ; *pidfree++ = retcode ; close(recsock) ; } } } /* ** Set the state before starting children because if the file was ** small the child has ended before state was setup to correct value */ state = S_RECEIVING ; /* ** Start all children */ pidfree = mychildren ; for (i = 0 ; i