1668 lines
36 KiB
C
1668 lines
36 KiB
C
/*
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* Copyright (c) 1998-2000 Sendmail, Inc. and its suppliers.
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* All rights reserved.
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* Copyright (c) 1990, 1993, 1994
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* The Regents of the University of California. All rights reserved.
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*
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* By using this file, you agree to the terms and conditions set
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* forth in the LICENSE file which can be found at the top level of
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* the sendmail distribution.
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*
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*/
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#ifndef lint
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static char copyright[] =
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"@(#) Copyright (c) 1998-2000 Sendmail, Inc. and its suppliers.\n\
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All rights reserved.\n\
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Copyright (c) 1990, 1993, 1994\n\
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The Regents of the University of California. All rights reserved.\n";
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#endif /* ! lint */
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#ifndef lint
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static char id[] = "@(#)$Id: mail.local.c,v 1.1.1.2 2000/05/03 09:27:20 itojun Exp $";
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#endif /* ! lint */
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/*
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** This is not intended to work on System V derived systems
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** such as Solaris or HP-UX, since they use a totally different
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** approach to mailboxes (essentially, they have a setgid program
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** rather than setuid, and they rely on the ability to "give away"
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** files to do their work). IT IS NOT A BUG that this doesn't
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** work on such architectures.
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*/
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#include <sys/types.h>
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#include <sys/param.h>
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#include <sys/stat.h>
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#include <sys/socket.h>
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#include <sys/file.h>
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#include <netinet/in.h>
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#include <arpa/nameser.h>
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#include <fcntl.h>
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#include <netdb.h>
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#include <pwd.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <syslog.h>
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#include <time.h>
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#include <unistd.h>
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#ifdef EX_OK
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# undef EX_OK /* unistd.h may have another use for this */
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#endif /* EX_OK */
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#include <sysexits.h>
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#include <ctype.h>
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#ifndef __P
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# include "sendmail/cdefs.h"
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#endif /* ! __P */
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#include "sendmail/useful.h"
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extern size_t strlcpy __P((char *, const char *, size_t));
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extern size_t strlcat __P((char *, const char *, size_t));
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#if defined(BSD4_4) || defined(__osf__) || defined(__GNU_LIBRARY__) || defined(IRIX64) || defined(IRIX5) || defined(IRIX6)
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# ifndef HASSTRERROR
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# define HASSTRERROR 1
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# endif /* ! HASSTRERROR */
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#endif /* defined(BSD4_4) || defined(__osf__) || defined(__GNU_LIBRARY__) ||
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defined(IRIX64) || defined(IRIX5) || defined(IRIX6) */
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#include "sendmail/errstring.h"
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#ifndef LOCKTO_RM
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# define LOCKTO_RM 300 /* timeout for stale lockfile removal */
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#endif /* LOCKTO_RM */
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#ifndef LOCKTO_GLOB
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# define LOCKTO_GLOB 400 /* global timeout for lockfile creation */
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#endif /* LOCKTO_GLOB */
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#ifdef __STDC__
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# include <stdarg.h>
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# define REALLOC(ptr, size) realloc(ptr, size)
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#else /* __STDC__ */
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# include <varargs.h>
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/* define a realloc() which works for NULL pointers */
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# define REALLOC(ptr, size) (((ptr) == NULL) ? malloc(size) : realloc(ptr, size))
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#endif /* __STDC__ */
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#if (defined(sun) && defined(__svr4__)) || defined(__SVR4)
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# define USE_LOCKF 1
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# define USE_SETEUID 1
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# define _PATH_MAILDIR "/var/mail"
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#endif /* (defined(sun) && defined(__svr4__)) || defined(__SVR4) */
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#ifdef NCR_MP_RAS3
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# define USE_LOCKF 1
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# define HASSNPRINTF 1
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# define _PATH_MAILDIR "/var/mail"
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#endif /* NCR_MP_RAS3 */
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#if defined(_AIX)
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# define USE_LOCKF 1
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# define USE_SETEUID 1
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# define USE_VSYSLOG 0
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#endif /* defined(_AIX) */
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#if defined(__hpux)
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# define USE_LOCKF 1
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# define USE_SETRESUID 1
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# define USE_VSYSLOG 0
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#endif /* defined(__hpux) */
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#if defined(_CRAY)
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# if !defined(MAXPATHLEN)
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# define MAXPATHLEN PATHSIZE
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# endif /* !defined(MAXPATHLEN) */
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# define USE_VSYSLOG 0
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# define _PATH_MAILDIR "/usr/spool/mail"
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#endif /* defined(_CRAY) */
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#if defined(ultrix)
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# define USE_VSYSLOG 0
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#endif /* defined(ultrix) */
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#if defined(__osf__)
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# define USE_VSYSLOG 0
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#endif /* defined(__osf__) */
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#if defined(NeXT) && !defined(__APPLE__)
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# include <libc.h>
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# define _PATH_MAILDIR "/usr/spool/mail"
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# define S_IRUSR S_IREAD
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# define S_IWUSR S_IWRITE
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#endif /* defined(NeXT) && !defined(__APPLE__) */
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#if defined(IRIX64) || defined(IRIX5) || defined(IRIX6)
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# include <paths.h>
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#endif /* defined(IRIX64) || defined(IRIX5) || defined(IRIX6) */
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/*
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* If you don't have flock, you could try using lockf instead.
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*/
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#ifdef USE_LOCKF
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# define flock(a, b) lockf(a, b, 0)
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# ifdef LOCK_EX
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# undef LOCK_EX
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# endif /* LOCK_EX */
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# define LOCK_EX F_LOCK
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#endif /* USE_LOCKF */
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#ifndef USE_VSYSLOG
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# define USE_VSYSLOG 1
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#endif /* ! USE_VSYSLOG */
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#ifndef LOCK_EX
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# include <sys/file.h>
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#endif /* ! LOCK_EX */
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#if defined(BSD4_4) || defined(__GLIBC__)
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# include <paths.h>
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# define _PATH_LOCTMP "/tmp/local.XXXXXX"
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#endif /* defined(BSD4_4) || defined(__GLIBC__) */
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#ifdef BSD4_4
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# define HAS_ST_GEN 1
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#else /* BSD4_4 */
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# ifndef _BSD_VA_LIST_
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# define _BSD_VA_LIST_ va_list
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# endif /* ! _BSD_VA_LIST_ */
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#endif /* BSD4_4 */
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#if defined(BSD4_4) || defined(linux)
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# define HASSNPRINTF 1
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#else /* defined(BSD4_4) || defined(linux) */
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# ifndef ultrix
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extern FILE *fdopen __P((int, const char *));
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# endif /* ! ultrix */
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#endif /* defined(BSD4_4) || defined(linux) */
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#if SOLARIS >= 20300 || (SOLARIS < 10000 && SOLARIS >= 203)
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# define CONTENTLENGTH 1 /* Needs the Content-Length header */
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#endif /* SOLARIS >= 20300 || (SOLARIS < 10000 && SOLARIS >= 203) */
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#if SOLARIS >= 20600 || (SOLARIS < 10000 && SOLARIS >= 206)
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# define HASSNPRINTF 1 /* has snprintf starting in 2.6 */
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#endif /* SOLARIS >= 20600 || (SOLARIS < 10000 && SOLARIS >= 206) */
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#ifdef HPUX11
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# define HASSNPRINTF 1 /* has snprintf starting in 2.6 */
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#endif /* HPUX11 */
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#if _AIX4 >= 40300
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# define HASSNPRINTF 1 /* has snprintf starting in 4.3 */
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#endif /* _AIX4 >= 40300 */
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#if !HASSNPRINTF
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extern int snprintf __P((char *, size_t, const char *, ...));
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# ifndef _CRAY
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extern int vsnprintf __P((char *, size_t, const char *, ...));
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# endif /* ! _CRAY */
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#endif /* !HASSNPRINTF */
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/*
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** If you don't have setreuid, and you have saved uids, and you have
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** a seteuid() call that doesn't try to emulate using setuid(), then
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** you can try defining USE_SETEUID.
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*/
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#ifdef USE_SETEUID
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# define setreuid(r, e) seteuid(e)
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#endif /* USE_SETEUID */
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/*
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** And of course on hpux you have setresuid()
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*/
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#ifdef USE_SETRESUID
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# define setreuid(r, e) setresuid(-1, e, -1)
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#endif /* USE_SETRESUID */
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#ifndef _PATH_LOCTMP
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# define _PATH_LOCTMP "/tmp/local.XXXXXX"
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#endif /* ! _PATH_LOCTMP */
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# ifndef _PATH_MAILDIR
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# define _PATH_MAILDIR "/var/spool/mail"
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# endif /* ! _PATH_MAILDIR */
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#ifndef S_ISREG
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# define S_ISREG(mode) (((mode) & _S_IFMT) == S_IFREG)
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#endif /* ! S_ISREG */
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#ifndef INADDRSZ
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# define INADDRSZ 4 /* size of an IPv4 address in bytes */
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#endif /* ! INADDRSZ */
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#ifndef MAILER_DAEMON
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# define MAILER_DAEMON "MAILER-DAEMON"
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#endif /* ! MAILER_DAEMON */
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#ifdef MAILLOCK
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# include <maillock.h>
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#endif /* MAILLOCK */
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#ifdef CONTENTLENGTH
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char ContentHdr[40] = "Content-Length: ";
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off_t HeaderLength;
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off_t BodyLength;
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#endif /* CONTENTLENGTH */
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bool EightBitMime = TRUE; /* advertise 8BITMIME in LMTP */
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int ExitVal = EX_OK; /* sysexits.h error value. */
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bool LMTPMode = FALSE;
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bool bouncequota = FALSE; /* permanent error when over quota */
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void deliver __P((int, char *, bool));
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int e_to_sys __P((int));
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void notifybiff __P((char *));
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int store __P((char *, int));
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void usage __P((void));
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void vwarn __P((const char *, _BSD_VA_LIST_));
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int lockmbox __P((char *));
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void unlockmbox __P((void));
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void mailerr __P((const char *, const char *, ...));
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int
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main(argc, argv)
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int argc;
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char *argv[];
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{
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struct passwd *pw;
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int ch, fd;
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uid_t uid;
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char *from;
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extern char *optarg;
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extern int optind;
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extern void dolmtp __P((bool));
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/* make sure we have some open file descriptors */
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for (fd = 10; fd < 30; fd++)
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(void) close(fd);
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/* use a reasonable umask */
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(void) umask(0077);
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#ifdef LOG_MAIL
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openlog("mail.local", 0, LOG_MAIL);
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#else /* LOG_MAIL */
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openlog("mail.local", 0);
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#endif /* LOG_MAIL */
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from = NULL;
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while ((ch = getopt(argc, argv, "7bdf:r:l")) != EOF)
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{
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switch(ch)
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{
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case '7': /* Do not advertise 8BITMIME */
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EightBitMime = FALSE;
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break;
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case 'b': /* bounce mail when over quota. */
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bouncequota = TRUE;
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break;
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case 'd': /* Backward compatible. */
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break;
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case 'f':
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case 'r': /* Backward compatible. */
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if (from != NULL)
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{
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mailerr(NULL, "multiple -f options");
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usage();
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}
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from = optarg;
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break;
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case 'l':
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LMTPMode = TRUE;
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break;
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case '?':
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default:
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usage();
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}
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}
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argc -= optind;
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argv += optind;
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/* initialize biff structures */
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notifybiff(NULL);
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if (LMTPMode)
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dolmtp(bouncequota);
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if (*argv == '\0')
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usage();
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/*
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** If from not specified, use the name from getlogin() if the
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** uid matches, otherwise, use the name from the password file
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** corresponding to the uid.
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*/
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uid = getuid();
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if (from == NULL && ((from = getlogin()) == NULL ||
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(pw = getpwnam(from)) == NULL ||
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pw->pw_uid != uid))
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from = (pw = getpwuid(uid)) != NULL ? pw->pw_name : "???";
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/*
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** There is no way to distinguish the error status of one delivery
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** from the rest of the deliveries. So, if we failed hard on one
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** or more deliveries, but had no failures on any of the others, we
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** return a hard failure. If we failed temporarily on one or more
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** deliveries, we return a temporary failure regardless of the other
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** failures. This results in the delivery being reattempted later
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** at the expense of repeated failures and multiple deliveries.
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*/
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for (fd = store(from, 0); *argv; ++argv)
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deliver(fd, *argv, bouncequota);
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exit(ExitVal);
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/* NOTREACHED */
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return ExitVal;
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}
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char *
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parseaddr(s, rcpt)
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char *s;
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bool rcpt;
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{
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char *p;
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int l;
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if (*s++ != '<')
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return NULL;
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p = s;
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/* at-domain-list */
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while (*p == '@')
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{
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p++;
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while (*p != ',' && *p != ':' && *p != '\0')
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p++;
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if (*p == '\0')
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return NULL;
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/* Skip over , or : */
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p++;
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}
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s = p;
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/* local-part */
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while (*p != '\0' && *p != '@' && *p != '>')
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{
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if (*p == '\\')
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{
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if (*++p == '\0')
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return NULL;
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}
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else if (*p == '\"')
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{
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p++;
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while (*p != '\0' && *p != '\"')
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{
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if (*p == '\\')
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{
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if (*++p == '\0')
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return NULL;
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}
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p++;
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}
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if (*p == '\0' || *(p + 1) == '\0')
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return NULL;
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}
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/* +detail ? */
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if (*p == '+' && rcpt)
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*p = '\0';
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p++;
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}
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|
|
/* @domain */
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if (*p == '@')
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{
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if (rcpt)
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*p++ = '\0';
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while (*p != '\0' && *p != '>')
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p++;
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}
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|
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if (*p != '>')
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return NULL;
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else
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*p = '\0';
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p++;
|
|
|
|
if (*p != '\0' && *p != ' ')
|
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return NULL;
|
|
|
|
if (*s == '\0')
|
|
s = MAILER_DAEMON;
|
|
|
|
l = strlen(s) + 1;
|
|
p = malloc(l);
|
|
if (p == NULL)
|
|
{
|
|
printf("421 4.3.0 memory exhausted\r\n");
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|
exit(EX_TEMPFAIL);
|
|
}
|
|
|
|
(void) strlcpy(p, s, l);
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return p;
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}
|
|
|
|
char *
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process_recipient(addr)
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|
char *addr;
|
|
{
|
|
if (getpwnam(addr) == NULL)
|
|
return "550 5.1.1 user unknown";
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|
return NULL;
|
|
}
|
|
|
|
#define RCPT_GROW 30
|
|
|
|
void
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|
dolmtp(bouncequota)
|
|
bool bouncequota;
|
|
{
|
|
char *return_path = NULL;
|
|
char **rcpt_addr = NULL;
|
|
int rcpt_num = 0;
|
|
int rcpt_alloc = 0;
|
|
bool gotlhlo = FALSE;
|
|
char *err;
|
|
int msgfd;
|
|
char *p;
|
|
int i;
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char myhostname[1024];
|
|
char buf[4096];
|
|
|
|
(void) gethostname(myhostname, sizeof myhostname - 1);
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|
|
|
printf("220 %s LMTP ready\r\n", myhostname);
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|
for (;;)
|
|
{
|
|
(void) fflush(stdout);
|
|
if (fgets(buf, sizeof(buf) - 1, stdin) == NULL)
|
|
exit(EX_OK);
|
|
p = buf + strlen(buf) - 1;
|
|
if (p >= buf && *p == '\n')
|
|
*p-- = '\0';
|
|
if (p >= buf && *p == '\r')
|
|
*p-- = '\0';
|
|
|
|
switch (buf[0])
|
|
{
|
|
case 'd':
|
|
case 'D':
|
|
if (strcasecmp(buf, "data") == 0)
|
|
{
|
|
if (rcpt_num == 0)
|
|
{
|
|
printf("503 5.5.1 No recipients\r\n");
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continue;
|
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}
|
|
msgfd = store(return_path, rcpt_num);
|
|
if (msgfd == -1)
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continue;
|
|
|
|
for (i = 0; i < rcpt_num; i++)
|
|
{
|
|
p = strchr(rcpt_addr[i], '+');
|
|
if (p != NULL)
|
|
*p++ = '\0';
|
|
deliver(msgfd, rcpt_addr[i], bouncequota);
|
|
}
|
|
(void) close(msgfd);
|
|
goto rset;
|
|
}
|
|
goto syntaxerr;
|
|
/* NOTREACHED */
|
|
break;
|
|
|
|
case 'l':
|
|
case 'L':
|
|
if (strncasecmp(buf, "lhlo ", 5) == 0)
|
|
{
|
|
/* check for duplicate per RFC 1651 4.2 */
|
|
if (gotlhlo)
|
|
{
|
|
printf("503 %s Duplicate LHLO\r\n",
|
|
myhostname);
|
|
continue;
|
|
}
|
|
gotlhlo = TRUE;
|
|
printf("250-%s\r\n", myhostname);
|
|
if (EightBitMime)
|
|
printf("250-8BITMIME\r\n");
|
|
printf("250-ENHANCEDSTATUSCODES\r\n");
|
|
printf("250 PIPELINING\r\n");
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|
continue;
|
|
}
|
|
goto syntaxerr;
|
|
/* NOTREACHED */
|
|
break;
|
|
|
|
case 'm':
|
|
case 'M':
|
|
if (strncasecmp(buf, "mail ", 5) == 0)
|
|
{
|
|
if (return_path != NULL)
|
|
{
|
|
printf("503 5.5.1 Nested MAIL command\r\n");
|
|
continue;
|
|
}
|
|
if (strncasecmp(buf+5, "from:", 5) != 0 ||
|
|
((return_path = parseaddr(buf + 10,
|
|
FALSE)) == NULL))
|
|
{
|
|
printf("501 5.5.4 Syntax error in parameters\r\n");
|
|
continue;
|
|
}
|
|
printf("250 2.5.0 ok\r\n");
|
|
continue;
|
|
}
|
|
goto syntaxerr;
|
|
/* NOTREACHED */
|
|
break;
|
|
|
|
case 'n':
|
|
case 'N':
|
|
if (strcasecmp(buf, "noop") == 0)
|
|
{
|
|
printf("250 2.0.0 ok\r\n");
|
|
continue;
|
|
}
|
|
goto syntaxerr;
|
|
/* NOTREACHED */
|
|
break;
|
|
|
|
case 'q':
|
|
case 'Q':
|
|
if (strcasecmp(buf, "quit") == 0)
|
|
{
|
|
printf("221 2.0.0 bye\r\n");
|
|
exit(EX_OK);
|
|
}
|
|
goto syntaxerr;
|
|
/* NOTREACHED */
|
|
break;
|
|
|
|
case 'r':
|
|
case 'R':
|
|
if (strncasecmp(buf, "rcpt ", 5) == 0)
|
|
{
|
|
if (return_path == NULL)
|
|
{
|
|
printf("503 5.5.1 Need MAIL command\r\n");
|
|
continue;
|
|
}
|
|
if (rcpt_num >= rcpt_alloc)
|
|
{
|
|
rcpt_alloc += RCPT_GROW;
|
|
rcpt_addr = (char **)
|
|
REALLOC((char *)rcpt_addr,
|
|
rcpt_alloc *
|
|
sizeof(char **));
|
|
if (rcpt_addr == NULL)
|
|
{
|
|
printf("421 4.3.0 memory exhausted\r\n");
|
|
exit(EX_TEMPFAIL);
|
|
}
|
|
}
|
|
if (strncasecmp(buf + 5, "to:", 3) != 0 ||
|
|
((rcpt_addr[rcpt_num] = parseaddr(buf + 8,
|
|
TRUE)) == NULL))
|
|
{
|
|
printf("501 5.5.4 Syntax error in parameters\r\n");
|
|
continue;
|
|
}
|
|
if ((err = process_recipient(rcpt_addr[rcpt_num])) != NULL)
|
|
{
|
|
printf("%s\r\n", err);
|
|
continue;
|
|
}
|
|
rcpt_num++;
|
|
printf("250 2.1.5 ok\r\n");
|
|
continue;
|
|
}
|
|
else if (strcasecmp(buf, "rset") == 0)
|
|
{
|
|
printf("250 2.0.0 ok\r\n");
|
|
|
|
rset:
|
|
while (rcpt_num)
|
|
free(rcpt_addr[--rcpt_num]);
|
|
if (return_path != NULL)
|
|
free(return_path);
|
|
return_path = NULL;
|
|
continue;
|
|
}
|
|
goto syntaxerr;
|
|
/* NOTREACHED */
|
|
break;
|
|
|
|
case 'v':
|
|
case 'V':
|
|
if (strncasecmp(buf, "vrfy ", 5) == 0)
|
|
{
|
|
printf("252 2.3.3 try RCPT to attempt delivery\r\n");
|
|
continue;
|
|
}
|
|
goto syntaxerr;
|
|
/* NOTREACHED */
|
|
break;
|
|
|
|
default:
|
|
syntaxerr:
|
|
printf("500 5.5.2 Syntax error\r\n");
|
|
continue;
|
|
/* NOTREACHED */
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
int
|
|
store(from, lmtprcpts)
|
|
char *from;
|
|
int lmtprcpts;
|
|
{
|
|
FILE *fp = NULL;
|
|
time_t tval;
|
|
bool eline;
|
|
bool fullline = TRUE;
|
|
char line[2048];
|
|
int fd;
|
|
char tmpbuf[sizeof _PATH_LOCTMP + 1];
|
|
|
|
(void) umask(0077);
|
|
(void) strlcpy(tmpbuf, _PATH_LOCTMP, sizeof tmpbuf);
|
|
if ((fd = mkstemp(tmpbuf)) == -1 || (fp = fdopen(fd, "w+")) == NULL)
|
|
{
|
|
if (lmtprcpts)
|
|
{
|
|
printf("451 4.3.0 unable to open temporary file\r\n");
|
|
return -1;
|
|
}
|
|
else
|
|
{
|
|
mailerr("451 4.3.0", "unable to open temporary file");
|
|
exit(ExitVal);
|
|
}
|
|
}
|
|
(void) unlink(tmpbuf);
|
|
|
|
if (LMTPMode)
|
|
{
|
|
printf("354 go ahead\r\n");
|
|
(void) fflush(stdout);
|
|
}
|
|
|
|
(void) time(&tval);
|
|
(void) fprintf(fp, "From %s %s", from, ctime(&tval));
|
|
|
|
#ifdef CONTENTLENGTH
|
|
HeaderLength = 0;
|
|
BodyLength = -1;
|
|
#endif /* CONTENTLENGTH */
|
|
|
|
line[0] = '\0';
|
|
for (eline = TRUE; fgets(line, sizeof(line), stdin); )
|
|
{
|
|
size_t line_len = 0;
|
|
int peek;
|
|
while (line[line_len] != '\n' && line_len < sizeof(line) - 2)
|
|
line_len++;
|
|
line_len++;
|
|
|
|
/* Check for dot-stuffing */
|
|
if (fullline && lmtprcpts && line[0] == '.')
|
|
{
|
|
if (line[1] == '\n' ||
|
|
(line[1] == '\r' && line[2] == '\n'))
|
|
goto lmtpdot;
|
|
memcpy(line, line + 1, line_len);
|
|
line_len--;
|
|
}
|
|
|
|
/* Check to see if we have the full line from the fgets() */
|
|
fullline = FALSE;
|
|
if (line_len > 0)
|
|
{
|
|
if (line[line_len - 1] == '\n')
|
|
{
|
|
if (line_len >= 2 &&
|
|
line[line_len - 2] == '\r')
|
|
{
|
|
(void) strlcpy(line + line_len - 2,
|
|
"\n", sizeof line -
|
|
line_len + 2);
|
|
line_len--;
|
|
}
|
|
fullline = TRUE;
|
|
}
|
|
else if (line[line_len - 1] == '\r')
|
|
{
|
|
/* Did we just miss the CRLF? */
|
|
peek = fgetc(stdin);
|
|
if (peek == '\n')
|
|
{
|
|
line[line_len - 1] = '\n';
|
|
fullline = TRUE;
|
|
}
|
|
else
|
|
(void) ungetc(peek, stdin);
|
|
}
|
|
}
|
|
else
|
|
fullline = TRUE;
|
|
|
|
#ifdef CONTENTLENGTH
|
|
if (line[0] == '\n' && HeaderLength == 0)
|
|
{
|
|
eline = FALSE;
|
|
HeaderLength = ftell(fp);
|
|
if (HeaderLength <= 0)
|
|
{
|
|
/*
|
|
** shouldn't happen, unless ftell() is
|
|
** badly broken
|
|
*/
|
|
|
|
HeaderLength = -1;
|
|
}
|
|
}
|
|
#else /* CONTENTLENGTH */
|
|
if (line[0] == '\n')
|
|
eline = TRUE;
|
|
#endif /* CONTENTLENGTH */
|
|
else
|
|
{
|
|
if (eline && line[0] == 'F' &&
|
|
!memcmp(line, "From ", 5))
|
|
(void)putc('>', fp);
|
|
eline = FALSE;
|
|
#ifdef CONTENTLENGTH
|
|
/* discard existing "Content-Length:" headers */
|
|
if (HeaderLength == 0 &&
|
|
(line[0] == 'C' || line[0] == 'c') &&
|
|
strncasecmp(line, ContentHdr, 15) == 0)
|
|
continue;
|
|
#endif /* CONTENTLENGTH */
|
|
|
|
}
|
|
(void) fwrite(line, sizeof(char), line_len, fp);
|
|
if (ferror(fp))
|
|
{
|
|
if (lmtprcpts)
|
|
{
|
|
while (lmtprcpts--)
|
|
printf("451 4.3.0 temporary file write error\r\n");
|
|
(void) fclose(fp);
|
|
return -1;
|
|
}
|
|
else
|
|
{
|
|
mailerr("451 4.3.0",
|
|
"temporary file write error");
|
|
(void) fclose(fp);
|
|
exit(ExitVal);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (lmtprcpts)
|
|
{
|
|
/* Got a premature EOF -- toss message and exit */
|
|
exit(EX_OK);
|
|
}
|
|
|
|
/* If message not newline terminated, need an extra. */
|
|
if (strchr(line, '\n') == NULL)
|
|
(void) putc('\n', fp);
|
|
|
|
lmtpdot:
|
|
|
|
#ifdef CONTENTLENGTH
|
|
BodyLength = ftell(fp);
|
|
if (HeaderLength == 0 && BodyLength > 0) /* empty body */
|
|
{
|
|
HeaderLength = BodyLength;
|
|
BodyLength = 0;
|
|
}
|
|
else
|
|
BodyLength = BodyLength - HeaderLength - 1 ;
|
|
|
|
if (HeaderLength > 0 && BodyLength >= 0)
|
|
{
|
|
extern char *quad_to_string();
|
|
|
|
if (sizeof BodyLength > sizeof(long))
|
|
snprintf(line, sizeof line, "%s\n",
|
|
quad_to_string(BodyLength));
|
|
else
|
|
snprintf(line, sizeof line, "%ld\n", (long) BodyLength);
|
|
strlcpy(&ContentHdr[16], line, sizeof(ContentHdr) - 16);
|
|
}
|
|
else
|
|
BodyLength = -1; /* Something is wrong here */
|
|
#endif /* CONTENTLENGTH */
|
|
|
|
/* Output a newline; note, empty messages are allowed. */
|
|
(void) putc('\n', fp);
|
|
|
|
if (fflush(fp) == EOF || ferror(fp) != 0)
|
|
{
|
|
if (lmtprcpts)
|
|
{
|
|
while (lmtprcpts--)
|
|
printf("451 4.3.0 temporary file write error\r\n");
|
|
(void) fclose(fp);
|
|
return -1;
|
|
}
|
|
else
|
|
{
|
|
mailerr("451 4.3.0", "temporary file write error");
|
|
(void) fclose(fp);
|
|
exit(ExitVal);
|
|
}
|
|
}
|
|
return fd;
|
|
}
|
|
|
|
void
|
|
deliver(fd, name, bouncequota)
|
|
int fd;
|
|
char *name;
|
|
bool bouncequota;
|
|
{
|
|
struct stat fsb, sb;
|
|
struct passwd *pw;
|
|
char path[MAXPATHLEN];
|
|
int mbfd, nr = 0, nw, off;
|
|
char *p;
|
|
off_t curoff;
|
|
#ifdef CONTENTLENGTH
|
|
off_t headerbytes;
|
|
int readamount;
|
|
#endif /* CONTENTLENGTH */
|
|
char biffmsg[100], buf[8*1024];
|
|
extern char *quad_to_string();
|
|
|
|
|
|
/*
|
|
** Disallow delivery to unknown names -- special mailboxes can be
|
|
** handled in the sendmail aliases file.
|
|
*/
|
|
if ((pw = getpwnam(name)) == NULL)
|
|
{
|
|
if (ExitVal != EX_TEMPFAIL)
|
|
ExitVal = EX_UNAVAILABLE;
|
|
if (LMTPMode)
|
|
{
|
|
if (ExitVal == EX_TEMPFAIL)
|
|
printf("451 4.3.0 cannot lookup name: %s\r\n", name);
|
|
else
|
|
printf("550 5.1.1 unknown name: %s\r\n", name);
|
|
}
|
|
else
|
|
{
|
|
char *errcode = NULL;
|
|
|
|
if (ExitVal == EX_TEMPFAIL)
|
|
errcode = "451 4.3.0";
|
|
else
|
|
errcode = "550 5.1.1";
|
|
mailerr(errcode, "unknown name: %s", name);
|
|
}
|
|
return;
|
|
}
|
|
endpwent();
|
|
|
|
/*
|
|
** Keep name reasonably short to avoid buffer overruns.
|
|
** This isn't necessary on BSD because of the proper
|
|
** definition of snprintf(), but it can cause problems
|
|
** on other systems.
|
|
** Also, clear out any bogus characters.
|
|
*/
|
|
|
|
if (strlen(name) > 40)
|
|
name[40] = '\0';
|
|
for (p = name; *p != '\0'; p++)
|
|
{
|
|
if (!isascii(*p))
|
|
*p &= 0x7f;
|
|
else if (!isprint(*p))
|
|
*p = '.';
|
|
}
|
|
|
|
(void) snprintf(path, sizeof(path), "%s/%s", _PATH_MAILDIR, name);
|
|
|
|
/*
|
|
** If the mailbox is linked or a symlink, fail. There's an obvious
|
|
** race here, that the file was replaced with a symbolic link after
|
|
** the lstat returned, but before the open. We attempt to detect
|
|
** this by comparing the original stat information and information
|
|
** returned by an fstat of the file descriptor returned by the open.
|
|
**
|
|
** NB: this is a symptom of a larger problem, that the mail spooling
|
|
** directory is writeable by the wrong users. If that directory is
|
|
** writeable, system security is compromised for other reasons, and
|
|
** it cannot be fixed here.
|
|
**
|
|
** If we created the mailbox, set the owner/group. If that fails,
|
|
** just return. Another process may have already opened it, so we
|
|
** can't unlink it. Historically, binmail set the owner/group at
|
|
** each mail delivery. We no longer do this, assuming that if the
|
|
** ownership or permissions were changed there was a reason.
|
|
**
|
|
** XXX
|
|
** open(2) should support flock'ing the file.
|
|
*/
|
|
|
|
tryagain:
|
|
#ifdef MAILLOCK
|
|
p = name;
|
|
#else /* MAILLOCK */
|
|
p = path;
|
|
#endif /* MAILLOCK */
|
|
if ((off = lockmbox(p)) != 0)
|
|
{
|
|
if (off == EX_TEMPFAIL || e_to_sys(off) == EX_TEMPFAIL)
|
|
{
|
|
ExitVal = EX_TEMPFAIL;
|
|
mailerr("451 4.3.0",
|
|
"lockmailbox %s failed; error code %d %s",
|
|
p, off, errno > 0 ? errstring(errno) : "");
|
|
}
|
|
else
|
|
{
|
|
mailerr("551 5.3.0",
|
|
"lockmailbox %s failed; error code %d %s",
|
|
p, off, errno > 0 ? errstring(errno) : "");
|
|
}
|
|
return;
|
|
}
|
|
|
|
if (lstat(path, &sb) < 0)
|
|
{
|
|
int save_errno;
|
|
int mode = S_IRUSR|S_IWUSR;
|
|
gid_t gid = pw->pw_gid;
|
|
|
|
#ifdef MAILGID
|
|
(void) umask(0007);
|
|
gid = MAILGID;
|
|
mode |= S_IRGRP|S_IWGRP;
|
|
#endif /* MAILGID */
|
|
|
|
mbfd = open(path, O_APPEND|O_CREAT|O_EXCL|O_WRONLY, mode);
|
|
|
|
save_errno = errno;
|
|
|
|
if (lstat(path, &sb) < 0)
|
|
{
|
|
ExitVal = EX_CANTCREAT;
|
|
mailerr("550 5.2.0",
|
|
"%s: lstat: file changed after open", path);
|
|
goto err1;
|
|
}
|
|
else
|
|
sb.st_uid = pw->pw_uid;
|
|
if (mbfd == -1)
|
|
{
|
|
if (save_errno == EEXIST)
|
|
goto tryagain;
|
|
}
|
|
else if (fchown(mbfd, pw->pw_uid, gid) < 0)
|
|
{
|
|
mailerr("451 4.3.0", "chown %u.%u: %s",
|
|
pw->pw_uid, gid, name);
|
|
goto err1;
|
|
}
|
|
}
|
|
else if (sb.st_nlink != 1 || !S_ISREG(sb.st_mode))
|
|
{
|
|
mailerr("550 5.2.0", "%s: irregular file", path);
|
|
goto err0;
|
|
}
|
|
else if (sb.st_uid != pw->pw_uid)
|
|
{
|
|
ExitVal = EX_CANTCREAT;
|
|
mailerr("550 5.2.0", "%s: wrong ownership (%d)",
|
|
path, sb.st_uid);
|
|
goto err0;
|
|
}
|
|
else
|
|
mbfd = open(path, O_APPEND|O_WRONLY, 0);
|
|
|
|
if (mbfd == -1)
|
|
{
|
|
mailerr("450 4.2.0", "%s: %s", path, errstring(errno));
|
|
goto err0;
|
|
}
|
|
else if (fstat(mbfd, &fsb) < 0 ||
|
|
fsb.st_nlink != 1 ||
|
|
sb.st_nlink != 1 ||
|
|
!S_ISREG(fsb.st_mode) ||
|
|
sb.st_dev != fsb.st_dev ||
|
|
sb.st_ino != fsb.st_ino ||
|
|
#if HAS_ST_GEN && 0 /* AFS returns random values for st_gen */
|
|
sb.st_gen != fsb.st_gen ||
|
|
#endif /* HAS_ST_GEN && 0 */
|
|
sb.st_uid != fsb.st_uid)
|
|
{
|
|
ExitVal = EX_TEMPFAIL;
|
|
mailerr("550 5.2.0", "%s: fstat: file changed after open",
|
|
path);
|
|
goto err1;
|
|
}
|
|
|
|
|
|
/* Wait until we can get a lock on the file. */
|
|
if (flock(mbfd, LOCK_EX) < 0)
|
|
{
|
|
mailerr("450 4.2.0", "%s: %s", path, errstring(errno));
|
|
goto err1;
|
|
}
|
|
|
|
/* Get the starting offset of the new message for biff. */
|
|
curoff = lseek(mbfd, (off_t)0, SEEK_END);
|
|
if (sizeof curoff > sizeof(long))
|
|
(void)snprintf(biffmsg, sizeof(biffmsg), "%s@%s\n",
|
|
name, quad_to_string(curoff));
|
|
else
|
|
(void)snprintf(biffmsg, sizeof(biffmsg), "%s@%ld\n",
|
|
name, (long) curoff);
|
|
|
|
/* Copy the message into the file. */
|
|
if (lseek(fd, (off_t)0, SEEK_SET) == (off_t)-1)
|
|
{
|
|
mailerr("450 4.2.0", "temporary file: %s",
|
|
errstring(errno));
|
|
goto err1;
|
|
}
|
|
if (setreuid(0, pw->pw_uid) < 0)
|
|
{
|
|
mailerr("450 4.2.0", "setreuid(0, %d): %s (r=%d, e=%d)",
|
|
pw->pw_uid, errstring(errno), getuid(), geteuid());
|
|
goto err1;
|
|
}
|
|
#ifdef DEBUG
|
|
fprintf(stderr, "new euid = %d\n", geteuid());
|
|
#endif /* DEBUG */
|
|
#ifdef CONTENTLENGTH
|
|
headerbytes = (BodyLength >= 0) ? HeaderLength : -1 ;
|
|
for (;;)
|
|
{
|
|
if (headerbytes == 0)
|
|
{
|
|
snprintf(buf, sizeof buf, "%s", ContentHdr);
|
|
nr = strlen(buf);
|
|
headerbytes = -1;
|
|
readamount = 0;
|
|
}
|
|
else if (headerbytes > sizeof(buf) || headerbytes < 0)
|
|
readamount = sizeof(buf);
|
|
else
|
|
readamount = headerbytes;
|
|
if (readamount != 0)
|
|
nr = read(fd, buf, readamount);
|
|
if (nr <= 0)
|
|
break;
|
|
if (headerbytes > 0)
|
|
headerbytes -= nr ;
|
|
|
|
#else /* CONTENTLENGTH */
|
|
while ((nr = read(fd, buf, sizeof(buf))) > 0)
|
|
{
|
|
#endif /* CONTENTLENGTH */
|
|
for (off = 0; off < nr; off += nw)
|
|
{
|
|
if ((nw = write(mbfd, buf + off, nr - off)) < 0)
|
|
{
|
|
#ifdef EDQUOT
|
|
if (errno == EDQUOT && bouncequota)
|
|
mailerr("552 5.2.2", "%s: %s",
|
|
path, errstring(errno));
|
|
else
|
|
#endif /* EDQUOT */
|
|
mailerr("450 4.2.0", "%s: %s",
|
|
path, errstring(errno));
|
|
goto err3;
|
|
}
|
|
}
|
|
}
|
|
if (nr < 0)
|
|
{
|
|
mailerr("450 4.2.0", "temporary file: %s",
|
|
errstring(errno));
|
|
goto err3;
|
|
}
|
|
|
|
/* Flush to disk, don't wait for update. */
|
|
if (fsync(mbfd) < 0)
|
|
{
|
|
mailerr("450 4.2.0", "%s: %s", path, errstring(errno));
|
|
err3:
|
|
if (setreuid(0, 0) < 0)
|
|
{
|
|
#if 0
|
|
/* already printed an error above for this recipient */
|
|
(void) e_to_sys(errno);
|
|
mailerr("450 4.2.0", "setreuid(0, 0): %s",
|
|
errstring(errno));
|
|
#endif /* 0 */
|
|
}
|
|
#ifdef DEBUG
|
|
fprintf(stderr, "reset euid = %d\n", geteuid());
|
|
#endif /* DEBUG */
|
|
(void) ftruncate(mbfd, curoff);
|
|
err1: (void) close(mbfd);
|
|
err0: unlockmbox();
|
|
return;
|
|
}
|
|
|
|
/* Close and check -- NFS doesn't write until the close. */
|
|
if (close(mbfd))
|
|
{
|
|
#ifdef EDQUOT
|
|
if (errno == EDQUOT && bouncequota)
|
|
mailerr("552 5.2.2", "%s: %s", path, errstring(errno));
|
|
else
|
|
#endif /* EDQUOT */
|
|
mailerr("450 4.2.0", "%s: %s", path, errstring(errno));
|
|
(void) truncate(path, curoff);
|
|
}
|
|
else
|
|
notifybiff(biffmsg);
|
|
|
|
if (setreuid(0, 0) < 0)
|
|
{
|
|
mailerr("450 4.2.0", "setreuid(0, 0): %s",
|
|
errstring(errno));
|
|
goto err0;
|
|
}
|
|
#ifdef DEBUG
|
|
fprintf(stderr, "reset euid = %d\n", geteuid());
|
|
#endif /* DEBUG */
|
|
unlockmbox();
|
|
if (LMTPMode)
|
|
printf("250 2.1.5 %s OK\r\n", name);
|
|
}
|
|
|
|
/*
|
|
** user.lock files are necessary for compatibility with other
|
|
** systems, e.g., when the mail spool file is NFS exported.
|
|
** Alas, mailbox locking is more than just a local matter.
|
|
** EPA 11/94.
|
|
*/
|
|
|
|
bool Locked = FALSE;
|
|
|
|
#ifdef MAILLOCK
|
|
int
|
|
lockmbox(name)
|
|
char *name;
|
|
{
|
|
int r;
|
|
|
|
if (Locked)
|
|
return 0;
|
|
if ((r = maillock(name, 15)) == L_SUCCESS)
|
|
{
|
|
Locked = TRUE;
|
|
return 0;
|
|
}
|
|
switch (r)
|
|
{
|
|
case L_TMPLOCK: /* Can't create tmp file */
|
|
case L_TMPWRITE: /* Can't write pid into lockfile */
|
|
case L_MAXTRYS: /* Failed after retrycnt attempts */
|
|
errno = 0;
|
|
r = EX_TEMPFAIL;
|
|
break;
|
|
case L_ERROR: /* Check errno for reason */
|
|
r = errno;
|
|
break;
|
|
default: /* other permanent errors */
|
|
errno = 0;
|
|
r = EX_UNAVAILABLE;
|
|
break;
|
|
}
|
|
return r;
|
|
}
|
|
|
|
void
|
|
unlockmbox()
|
|
{
|
|
if (Locked)
|
|
mailunlock();
|
|
Locked = FALSE;
|
|
}
|
|
#else /* MAILLOCK */
|
|
|
|
char LockName[MAXPATHLEN];
|
|
|
|
int
|
|
lockmbox(path)
|
|
char *path;
|
|
{
|
|
int statfailed = 0;
|
|
time_t start;
|
|
|
|
if (Locked)
|
|
return 0;
|
|
if (strlen(path) + 6 > sizeof LockName)
|
|
return EX_SOFTWARE;
|
|
(void) snprintf(LockName, sizeof LockName, "%s.lock", path);
|
|
(void) time(&start);
|
|
for (; ; sleep(5))
|
|
{
|
|
int fd;
|
|
struct stat st;
|
|
time_t now;
|
|
|
|
/* global timeout */
|
|
(void) time(&now);
|
|
if (now > start + LOCKTO_GLOB)
|
|
{
|
|
errno = 0;
|
|
return EX_TEMPFAIL;
|
|
}
|
|
fd = open(LockName, O_WRONLY|O_EXCL|O_CREAT, 0);
|
|
if (fd >= 0)
|
|
{
|
|
/* defeat lock checking programs which test pid */
|
|
(void) write(fd, "0", 2);
|
|
Locked = TRUE;
|
|
(void) close(fd);
|
|
return 0;
|
|
}
|
|
if (stat(LockName, &st) < 0)
|
|
{
|
|
if (statfailed++ > 5)
|
|
{
|
|
errno = 0;
|
|
return EX_TEMPFAIL;
|
|
}
|
|
continue;
|
|
}
|
|
statfailed = 0;
|
|
(void) time(&now);
|
|
if (now < st.st_ctime + LOCKTO_RM)
|
|
continue;
|
|
|
|
/* try to remove stale lockfile */
|
|
if (unlink(LockName) < 0)
|
|
return errno;
|
|
}
|
|
}
|
|
|
|
void
|
|
unlockmbox()
|
|
{
|
|
if (!Locked)
|
|
return;
|
|
(void) unlink(LockName);
|
|
Locked = FALSE;
|
|
}
|
|
#endif /* MAILLOCK */
|
|
|
|
void
|
|
notifybiff(msg)
|
|
char *msg;
|
|
{
|
|
static bool initialized = FALSE;
|
|
static int f = -1;
|
|
struct hostent *hp;
|
|
struct servent *sp;
|
|
int len;
|
|
static struct sockaddr_in addr;
|
|
|
|
if (!initialized)
|
|
{
|
|
initialized = TRUE;
|
|
|
|
/* Be silent if biff service not available. */
|
|
if ((sp = getservbyname("biff", "udp")) == NULL ||
|
|
(hp = gethostbyname("localhost")) == NULL ||
|
|
hp->h_length != INADDRSZ)
|
|
return;
|
|
|
|
addr.sin_family = hp->h_addrtype;
|
|
memcpy(&addr.sin_addr, hp->h_addr, INADDRSZ);
|
|
addr.sin_port = sp->s_port;
|
|
}
|
|
|
|
/* No message, just return */
|
|
if (msg == NULL)
|
|
return;
|
|
|
|
/* Couldn't initialize addr struct */
|
|
if (addr.sin_family == AF_UNSPEC)
|
|
return;
|
|
|
|
if (f < 0 && (f = socket(AF_INET, SOCK_DGRAM, 0)) == -1)
|
|
return;
|
|
len = strlen(msg) + 1;
|
|
(void) sendto(f, msg, len, 0, (struct sockaddr *) &addr, sizeof(addr));
|
|
}
|
|
|
|
void
|
|
usage()
|
|
{
|
|
ExitVal = EX_USAGE;
|
|
mailerr(NULL, "usage: mail.local [-l] [-f from] user ...");
|
|
exit(ExitVal);
|
|
}
|
|
|
|
void
|
|
#ifdef __STDC__
|
|
mailerr(const char *hdr, const char *fmt, ...)
|
|
#else /* __STDC__ */
|
|
mailerr(hdr, fmt, va_alist)
|
|
const char *hdr;
|
|
const char *fmt;
|
|
va_dcl
|
|
#endif /* __STDC__ */
|
|
{
|
|
va_list ap;
|
|
|
|
#ifdef __STDC__
|
|
va_start(ap, fmt);
|
|
#else /* __STDC__ */
|
|
va_start(ap);
|
|
#endif /* __STDC__ */
|
|
if (LMTPMode)
|
|
{
|
|
if (hdr != NULL)
|
|
printf("%s ", hdr);
|
|
(void) vprintf(fmt, ap);
|
|
(void) printf("\r\n");
|
|
}
|
|
else
|
|
{
|
|
(void) e_to_sys(errno);
|
|
vwarn(fmt, ap);
|
|
}
|
|
}
|
|
|
|
void
|
|
vwarn(fmt, ap)
|
|
const char *fmt;
|
|
_BSD_VA_LIST_ ap;
|
|
{
|
|
/*
|
|
** Log the message to stderr.
|
|
**
|
|
** Don't use LOG_PERROR as an openlog() flag to do this,
|
|
** it's not portable enough.
|
|
*/
|
|
|
|
if (ExitVal != EX_USAGE)
|
|
(void) fprintf(stderr, "mail.local: ");
|
|
(void) vfprintf(stderr, fmt, ap);
|
|
(void) fprintf(stderr, "\n");
|
|
|
|
#if USE_VSYSLOG
|
|
/* Log the message to syslog. */
|
|
vsyslog(LOG_ERR, fmt, ap);
|
|
#else /* USE_VSYSLOG */
|
|
{
|
|
char fmtbuf[10240];
|
|
|
|
(void) vsnprintf(fmtbuf, sizeof fmtbuf, fmt, ap);
|
|
syslog(LOG_ERR, "%s", fmtbuf);
|
|
}
|
|
#endif /* USE_VSYSLOG */
|
|
}
|
|
|
|
/*
|
|
* e_to_sys --
|
|
* Guess which errno's are temporary. Gag me.
|
|
*/
|
|
int
|
|
e_to_sys(num)
|
|
int num;
|
|
{
|
|
/* Temporary failures override hard errors. */
|
|
if (ExitVal == EX_TEMPFAIL)
|
|
return ExitVal;
|
|
|
|
switch (num) /* Hopefully temporary errors. */
|
|
{
|
|
#ifdef EDQUOT
|
|
case EDQUOT: /* Disc quota exceeded */
|
|
if (bouncequota)
|
|
{
|
|
ExitVal = EX_UNAVAILABLE;
|
|
break;
|
|
}
|
|
/* FALLTHROUGH */
|
|
#endif /* EDQUOT */
|
|
#ifdef EAGAIN
|
|
case EAGAIN: /* Resource temporarily unavailable */
|
|
#endif /* EAGAIN */
|
|
#ifdef EBUSY
|
|
case EBUSY: /* Device busy */
|
|
#endif /* EBUSY */
|
|
#ifdef EPROCLIM
|
|
case EPROCLIM: /* Too many processes */
|
|
#endif /* EPROCLIM */
|
|
#ifdef EUSERS
|
|
case EUSERS: /* Too many users */
|
|
#endif /* EUSERS */
|
|
#ifdef ECONNABORTED
|
|
case ECONNABORTED: /* Software caused connection abort */
|
|
#endif /* ECONNABORTED */
|
|
#ifdef ECONNREFUSED
|
|
case ECONNREFUSED: /* Connection refused */
|
|
#endif /* ECONNREFUSED */
|
|
#ifdef ECONNRESET
|
|
case ECONNRESET: /* Connection reset by peer */
|
|
#endif /* ECONNRESET */
|
|
#ifdef EDEADLK
|
|
case EDEADLK: /* Resource deadlock avoided */
|
|
#endif /* EDEADLK */
|
|
#ifdef EFBIG
|
|
case EFBIG: /* File too large */
|
|
#endif /* EFBIG */
|
|
#ifdef EHOSTDOWN
|
|
case EHOSTDOWN: /* Host is down */
|
|
#endif /* EHOSTDOWN */
|
|
#ifdef EHOSTUNREACH
|
|
case EHOSTUNREACH: /* No route to host */
|
|
#endif /* EHOSTUNREACH */
|
|
#ifdef EMFILE
|
|
case EMFILE: /* Too many open files */
|
|
#endif /* EMFILE */
|
|
#ifdef ENETDOWN
|
|
case ENETDOWN: /* Network is down */
|
|
#endif /* ENETDOWN */
|
|
#ifdef ENETRESET
|
|
case ENETRESET: /* Network dropped connection on reset */
|
|
#endif /* ENETRESET */
|
|
#ifdef ENETUNREACH
|
|
case ENETUNREACH: /* Network is unreachable */
|
|
#endif /* ENETUNREACH */
|
|
#ifdef ENFILE
|
|
case ENFILE: /* Too many open files in system */
|
|
#endif /* ENFILE */
|
|
#ifdef ENOBUFS
|
|
case ENOBUFS: /* No buffer space available */
|
|
#endif /* ENOBUFS */
|
|
#ifdef ENOMEM
|
|
case ENOMEM: /* Cannot allocate memory */
|
|
#endif /* ENOMEM */
|
|
#ifdef ENOSPC
|
|
case ENOSPC: /* No space left on device */
|
|
#endif /* ENOSPC */
|
|
#ifdef EROFS
|
|
case EROFS: /* Read-only file system */
|
|
#endif /* EROFS */
|
|
#ifdef ESTALE
|
|
case ESTALE: /* Stale NFS file handle */
|
|
#endif /* ESTALE */
|
|
#ifdef ETIMEDOUT
|
|
case ETIMEDOUT: /* Connection timed out */
|
|
#endif /* ETIMEDOUT */
|
|
#if defined(EWOULDBLOCK) && EWOULDBLOCK != EAGAIN && EWOULDBLOCK != EDEADLK
|
|
case EWOULDBLOCK: /* Operation would block. */
|
|
#endif /* defined(EWOULDBLOCK) && EWOULDBLOCK != EAGAIN && EWOULDBLOCK != EDEADLK */
|
|
ExitVal = EX_TEMPFAIL;
|
|
break;
|
|
|
|
default:
|
|
ExitVal = EX_UNAVAILABLE;
|
|
break;
|
|
}
|
|
return ExitVal;
|
|
}
|
|
|
|
#if defined(ultrix) || defined(_CRAY)
|
|
/*
|
|
* Copyright (c) 1987, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the University of
|
|
* California, Berkeley and its contributors.
|
|
* 4. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
# if defined(LIBC_SCCS) && !defined(lint)
|
|
static char sccsid[] = "@(#)mktemp.c 8.1 (Berkeley) 6/4/93";
|
|
# endif /* defined(LIBC_SCCS) && !defined(lint) */
|
|
|
|
# include <sys/types.h>
|
|
# include <sys/stat.h>
|
|
# include <fcntl.h>
|
|
# include <errno.h>
|
|
# include <stdio.h>
|
|
# include <ctype.h>
|
|
|
|
static int _gettemp();
|
|
|
|
mkstemp(path)
|
|
char *path;
|
|
{
|
|
int fd;
|
|
|
|
return (_gettemp(path, &fd) ? fd : -1);
|
|
}
|
|
|
|
# if 0
|
|
char *
|
|
mktemp(path)
|
|
char *path;
|
|
{
|
|
return(_gettemp(path, (int *)NULL) ? path : (char *)NULL);
|
|
}
|
|
# endif /* 0 */
|
|
|
|
static
|
|
_gettemp(path, doopen)
|
|
char *path;
|
|
register int *doopen;
|
|
{
|
|
extern int errno;
|
|
register char *start, *trv;
|
|
struct stat sbuf;
|
|
u_int pid;
|
|
|
|
pid = getpid();
|
|
for (trv = path; *trv; ++trv); /* extra X's get set to 0's */
|
|
while (*--trv == 'X')
|
|
{
|
|
*trv = (pid % 10) + '0';
|
|
pid /= 10;
|
|
}
|
|
|
|
/*
|
|
* check the target directory; if you have six X's and it
|
|
* doesn't exist this runs for a *very* long time.
|
|
*/
|
|
for (start = trv + 1;; --trv)
|
|
{
|
|
if (trv <= path)
|
|
break;
|
|
if (*trv == '/')
|
|
{
|
|
*trv = '\0';
|
|
if (stat(path, &sbuf) < 0)
|
|
return(0);
|
|
if (!S_ISDIR(sbuf.st_mode))
|
|
{
|
|
errno = ENOTDIR;
|
|
return(0);
|
|
}
|
|
*trv = '/';
|
|
break;
|
|
}
|
|
}
|
|
|
|
for (;;)
|
|
{
|
|
if (doopen)
|
|
{
|
|
if ((*doopen =
|
|
open(path, O_CREAT|O_EXCL|O_RDWR, 0600)) >= 0)
|
|
return(1);
|
|
if (errno != EEXIST)
|
|
return(0);
|
|
}
|
|
else if (stat(path, &sbuf) < 0)
|
|
return(errno == ENOENT ? 1 : 0);
|
|
|
|
/* tricky little algorithm for backward compatibility */
|
|
for (trv = start;;)
|
|
{
|
|
if (!*trv)
|
|
return(0);
|
|
if (*trv == 'z')
|
|
*trv++ = 'a';
|
|
else
|
|
{
|
|
if (isascii(*trv) && isdigit(*trv))
|
|
*trv = 'a';
|
|
else
|
|
++*trv;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
/* NOTREACHED */
|
|
}
|
|
#endif /* defined(ultrix) || defined(_CRAY) */
|