diff options
Diffstat (limited to 'gnu/libexec/uucp/libunix/recep.c')
| -rw-r--r-- | gnu/libexec/uucp/libunix/recep.c | 201 |
1 files changed, 0 insertions, 201 deletions
diff --git a/gnu/libexec/uucp/libunix/recep.c b/gnu/libexec/uucp/libunix/recep.c deleted file mode 100644 index a1f893d..0000000 --- a/gnu/libexec/uucp/libunix/recep.c +++ /dev/null @@ -1,201 +0,0 @@ -/* recep.c - See whether a file has already been received. - - Copyright (C) 1992, 1993, 1995 Ian Lance Taylor - - This file is part of the Taylor UUCP package. - - 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 (at your option) 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. - - The author of the program may be contacted at ian@airs.com or - c/o Cygnus Support, 48 Grove Street, Somerville, MA 02144. - */ - -#include "uucp.h" - -#include "uudefs.h" -#include "uuconf.h" -#include "sysdep.h" -#include "system.h" - -#include <errno.h> - -#if HAVE_TIME_H -#include <time.h> -#endif - -#if HAVE_FCNTL_H -#include <fcntl.h> -#else -#if HAVE_SYS_FILE_H -#include <sys/file.h> -#endif -#endif - -static char *zsreceived_name P((const struct uuconf_system *qsys, - const char *ztemp)); - -/* These routines are used to see whether we have already received a - file in a previous UUCP connection. It is possible for the - acknowledgement of a received file to be lost. The sending system - will then not know that the file was correctly received, and will - send it again. This can be a problem particularly with protocols - which support channels, since they may send several small files in - a single window, all of which may be received correctly although - the sending system never sees the acknowledgement. If these files - involve an execution, the execution will happen twice, which will - be bad. - - We use a simple system. For each file we want to remember, we - create an empty file names .Received/SYS/TEMP, where SYS is the - name of the system and TEMP is the name of the temporary file used - by the sender. If no temporary file is used by the sender, we - don't remember that we received the file. This is not perfect, but - execution files will always have a temporary file, so the most - important case is handled. Also, any file received from Taylor - UUCP 1.04 or greater will always have a temporary file. */ - -/* Return the name we are going use for the marker, or NULL if we have - no name. */ - -static char * -zsreceived_name (qsys, ztemp) - const struct uuconf_system *qsys; - const char *ztemp; -{ - if (ztemp != NULL - && *ztemp == 'D' - && strcmp (ztemp, "D.0") != 0) - return zsappend3 (".Received", qsys->uuconf_zname, ztemp); - else - return NULL; -} - -/* Remember that we have already received a file. */ - -/*ARGSUSED*/ -boolean -fsysdep_remember_reception (qsys, zto, ztemp) - const struct uuconf_system *qsys; - const char *zto; - const char *ztemp; -{ - char *zfile; - int o; - - zfile = zsreceived_name (qsys, ztemp); - if (zfile == NULL) - return TRUE; - o = creat (zfile, IPUBLIC_FILE_MODE); - if (o < 0) - { - if (errno == ENOENT) - { - if (fsysdep_make_dirs (zfile, FALSE)) - { - ubuffree (zfile); - return FALSE; - } - o = creat (zfile, IPUBLIC_FILE_MODE); - } - if (o < 0) - { - ulog (LOG_ERROR, "creat (%s): %s", zfile, strerror (errno)); - ubuffree (zfile); - return FALSE; - } - } - - ubuffree (zfile); - - /* We don't have to actually put anything in the file; we just use - the name. This is more convenient than keeping a file with a - list of names. */ - if (close (o) < 0) - { - ulog (LOG_ERROR, "fsysdep_remember_reception: close: %s", - strerror (errno)); - return FALSE; - } - - return TRUE; -} - -/* The number of seconds in one week. We must cast to long for this - to be calculated correctly on a machine with 16 bit ints. */ -#define SECS_PER_WEEK ((long) 7 * (long) 24 * (long) 60 * (long) 60) - -/* See if we have already received a file. Note that don't delete the - marker file here, because we need to know that the sending system - has received our denial first. This function returns TRUE if the - file has already been received, FALSE if it has not. */ - -/*ARGSUSED*/ -boolean -fsysdep_already_received (qsys, zto, ztemp) - const struct uuconf_system *qsys; - const char *zto; - const char *ztemp; -{ - char *zfile; - struct stat s; - boolean fret; - - zfile = zsreceived_name (qsys, ztemp); - if (zfile == NULL) - return FALSE; - if (stat (zfile, &s) < 0) - { - if (errno != ENOENT) - ulog (LOG_ERROR, "stat (%s): %s", zfile, strerror (errno)); - ubuffree (zfile); - return FALSE; - } - - /* Ignore the file (return FALSE) if it is over one week old. */ - fret = s.st_mtime + SECS_PER_WEEK >= time ((time_t *) NULL); - - if (fret) - DEBUG_MESSAGE1 (DEBUG_SPOOLDIR, "fsysdep_already_received: Found %s", - zfile); - - ubuffree (zfile); - - return fret; -} - -/* Forget that we have received a file. */ - -/*ARGSUSED*/ -boolean -fsysdep_forget_reception (qsys, zto, ztemp) - const struct uuconf_system *qsys; - const char *zto; - const char *ztemp; -{ - char *zfile; - - zfile = zsreceived_name (qsys, ztemp); - if (zfile == NULL) - return TRUE; - if (remove (zfile) < 0 - && errno != ENOENT) - { - ulog (LOG_ERROR, "remove (%s): %s", zfile, strerror (errno)); - ubuffree (zfile); - return FALSE; - } - return TRUE; -} |
