#include <stdio.h>
#include <errno.h>
#include <../src/syswait.h>
+#include <getopt.h>
#ifdef MAIL_USE_POP
#include "pop.h"
#endif
#endif
#ifdef WINDOWSNT
+#include "ntlib.h"
#undef access
#undef unlink
#define fork() 0
-#define sys_wait(var) (*(var) = 0)
+#define wait(var) (*(var) = 0)
/* Unfortunately, Samba doesn't seem to properly lock Unix files even
though the locking call succeeds (and indeed blocks local access from
other NT programs). If you have direct file access using an NFS
client or something other than Samba, the locking call might work
- properly - make sure it does before you enable this! */
-#define DISABLE_DIRECT_ACCESS
+ properly - make sure it does before you enable this!
+
+ [18-Feb-97 andrewi] I now believe my comment above to be incorrect,
+ since it was based on a misunderstanding of how locking calls are
+ implemented and used on Unix. */
+//#define DISABLE_DIRECT_ACCESS
+
+/* Ensure all file i/o is in binary mode. */
+#include <fcntl.h>
+int _fmode = _O_BINARY;
#endif /* WINDOWSNT */
+/* Cancel substitutions made by config.h for Emacs. */
+#undef open
+#undef read
+#undef write
+#undef close
+
#ifdef USG
#include <fcntl.h>
#include <unistd.h>
#include <unistd.h>
#endif
+#ifdef STDC_HEADERS
+#include <stdlib.h>
+#endif
+
#if defined (XENIX) || defined (WINDOWSNT)
#include <sys/locking.h>
#endif
extern int lk_open (), lk_close ();
#endif
-/* Cancel substitutions made by config.h for Emacs. */
-#undef open
-#undef read
-#undef write
-#undef close
+#if !defined (MAIL_USE_SYSTEM_LOCK) && !defined (MAIL_USE_MMDF) && \
+ defined (HAVE_LIBMAIL) && defined (HAVE_MAILLOCK_H)
+#include <maillock.h>
+/* We can't use maillock unless we know what directory system mail
+ files appear in. */
+#ifdef MAILDIR
+#define MAIL_USE_MAILLOCK
+static char *mail_spool_name ();
+#endif
+#endif
#ifndef errno
extern int errno;
#endif
char *strerror ();
+extern char *rindex ();
void fatal ();
void error ();
int indesc, outdesc;
int nread;
WAITTYPE status;
+ int c, preserve_mail = 0;
#ifndef MAIL_USE_SYSTEM_LOCK
struct stat st;
int desc;
#endif /* not MAIL_USE_SYSTEM_LOCK */
+#ifdef MAIL_USE_MAILLOCK
+ char *spool_name;
+#endif
+
+#ifdef MAIL_USE_POP
+ int pop_reverse_order = 0;
+# define ARGSTR "pr"
+#else /* ! MAIL_USE_POP */
+# define ARGSTR "p"
+#endif /* MAIL_USE_POP */
+
delete_lockname = 0;
- if (argc < 3)
+ while ((c = getopt (argc, argv, ARGSTR)) != EOF)
{
- fprintf (stderr, "Usage: movemail inbox destfile [POP-password]\n");
- exit(1);
+ switch (c) {
+#ifdef MAIL_USE_POP
+ case 'r':
+ pop_reverse_order = 1;
+ break;
+#endif
+ case 'p':
+ preserve_mail++;
+ break;
+ default:
+ exit(1);
+ }
}
- inname = argv[1];
- outname = argv[2];
+ if (
+#ifdef MAIL_USE_POP
+ (argc - optind < 2) || (argc - optind > 3)
+#else
+ (argc - optind != 2)
+#endif
+ )
+ {
+ fprintf (stderr, "Usage: movemail [-p] inbox destfile%s\n",
+#ifdef MAIL_USE_POP
+ " [POP-password]"
+#else
+ ""
+#endif
+ );
+ exit (1);
+ }
+
+ inname = argv[optind];
+ outname = argv[optind+1];
#ifdef MAIL_USE_MMDF
mmdf_init (argv[0]);
{
int status;
- status = popmail (inname + 3, outname, argc > 3 ? argv[3] : NULL);
+ status = popmail (inname + 3, outname, preserve_mail,
+ (argc - optind == 3) ? argv[optind+2] : NULL,
+ pop_reverse_order);
exit (status);
}
#ifndef MAIL_USE_MMDF
#ifndef MAIL_USE_SYSTEM_LOCK
- /* Use a lock file named after our first argument with .lock appended:
- If it exists, the mail file is locked. */
- /* Note: this locking mechanism is *required* by the mailer
- (on systems which use it) to prevent loss of mail.
-
- On systems that use a lock file, extracting the mail without locking
- WILL occasionally cause loss of mail due to timing errors!
-
- So, if creation of the lock file fails
- due to access permission on the mail spool directory,
- you simply MUST change the permission
- and/or make movemail a setgid program
- so it can create lock files properly.
-
- You might also wish to verify that your system is one
- which uses lock files for this purpose. Some systems use other methods.
-
- If your system uses the `flock' system call for mail locking,
- define MAIL_USE_SYSTEM_LOCK in config.h or the s-*.h file
- and recompile movemail. If the s- file for your system
- should define MAIL_USE_SYSTEM_LOCK but does not, send a bug report
- to bug-gnu-emacs@prep.ai.mit.edu so we can fix it. */
-
- lockname = concat (inname, ".lock", "");
- tempname = (char *) xmalloc (strlen (inname) + strlen ("EXXXXXX") + 1);
- strcpy (tempname, inname);
- p = tempname + strlen (tempname);
- while (p != tempname && !IS_DIRECTORY_SEP (p[-1]))
- p--;
- *p = 0;
- strcpy (p, "EXXXXXX");
- mktemp (tempname);
- unlink (tempname);
-
- while (1)
+#ifdef MAIL_USE_MAILLOCK
+ spool_name = mail_spool_name (inname);
+ if (! spool_name)
+#endif
{
- /* Create the lock file, but not under the lock file name. */
- /* Give up if cannot do that. */
- desc = open (tempname, O_WRONLY | O_CREAT | O_EXCL, 0666);
- if (desc < 0)
- {
- char *message = (char *) xmalloc (strlen (tempname) + 50);
- sprintf (message, "%s--see source file lib-src/movemail.c",
- tempname);
- pfatal_with_name (message);
- }
- close (desc);
-
- tem = link (tempname, lockname);
+ /* Use a lock file named after our first argument with .lock appended:
+ If it exists, the mail file is locked. */
+ /* Note: this locking mechanism is *required* by the mailer
+ (on systems which use it) to prevent loss of mail.
+
+ On systems that use a lock file, extracting the mail without locking
+ WILL occasionally cause loss of mail due to timing errors!
+
+ So, if creation of the lock file fails
+ due to access permission on the mail spool directory,
+ you simply MUST change the permission
+ and/or make movemail a setgid program
+ so it can create lock files properly.
+
+ You might also wish to verify that your system is one
+ which uses lock files for this purpose. Some systems use other methods.
+
+ If your system uses the `flock' system call for mail locking,
+ define MAIL_USE_SYSTEM_LOCK in config.h or the s-*.h file
+ and recompile movemail. If the s- file for your system
+ should define MAIL_USE_SYSTEM_LOCK but does not, send a bug report
+ to bug-gnu-emacs@prep.ai.mit.edu so we can fix it. */
+
+ lockname = concat (inname, ".lock", "");
+ tempname = (char *) xmalloc (strlen (inname) + strlen ("EXXXXXX") + 1);
+ strcpy (tempname, inname);
+ p = tempname + strlen (tempname);
+ while (p != tempname && !IS_DIRECTORY_SEP (p[-1]))
+ p--;
+ *p = 0;
+ strcpy (p, "EXXXXXX");
+ mktemp (tempname);
unlink (tempname);
- if (tem >= 0)
- break;
- sleep (1);
- /* If lock file is five minutes old, unlock it.
- Five minutes should be good enough to cope with crashes
- and wedgitude, and long enough to avoid being fooled
- by time differences between machines. */
- if (stat (lockname, &st) >= 0)
+ while (1)
{
- now = time (0);
- if (st.st_ctime < now - 300)
- unlink (lockname);
+ /* Create the lock file, but not under the lock file name. */
+ /* Give up if cannot do that. */
+ desc = open (tempname, O_WRONLY | O_CREAT | O_EXCL, 0666);
+ if (desc < 0)
+ {
+ char *message = (char *) xmalloc (strlen (tempname) + 50);
+ sprintf (message, "%s--see source file lib-src/movemail.c",
+ tempname);
+ pfatal_with_name (message);
+ }
+ close (desc);
+
+ tem = link (tempname, lockname);
+ unlink (tempname);
+ if (tem >= 0)
+ break;
+ sleep (1);
+
+ /* If lock file is five minutes old, unlock it.
+ Five minutes should be good enough to cope with crashes
+ and wedgitude, and long enough to avoid being fooled
+ by time differences between machines. */
+ if (stat (lockname, &st) >= 0)
+ {
+ now = time (0);
+ if (st.st_ctime < now - 300)
+ unlink (lockname);
+ }
}
- }
- delete_lockname = lockname;
+ delete_lockname = lockname;
+ }
#endif /* not MAIL_USE_SYSTEM_LOCK */
#endif /* not MAIL_USE_MMDF */
if (fork () == 0)
{
+ int lockcount = 0;
+ int status = 0;
+#if defined (MAIL_USE_MAILLOCK) && defined (HAVE_TOUCHLOCK)
+ long touched_lock, now;
+#endif
+
setuid (getuid ());
#ifndef MAIL_USE_MMDF
if (indesc < 0)
pfatal_with_name (inname);
-#if defined (BSD) || defined (XENIX)
+#if defined (BSD_SYSTEM) || defined (XENIX)
/* In case movemail is setuid to root, make sure the user can
read the output file. */
/* This is desirable for all systems
but I don't want to assume all have the umask system call */
umask (umask (0) & 0333);
-#endif /* BSD or Xenix */
+#endif /* BSD_SYSTEM || XENIX */
outdesc = open (outname, O_WRONLY | O_CREAT | O_EXCL, 0666);
if (outdesc < 0)
pfatal_with_name (outname);
+
+ /* This label exists so we can retry locking
+ after a delay, if it got EAGAIN or EBUSY. */
+ retry_lock:
+
+ /* Try to lock it. */
+#ifdef MAIL_USE_MAILLOCK
+ if (spool_name)
+ {
+ /* The "0 - " is to make it a negative number if maillock returns
+ non-zero. */
+ status = 0 - maillock (spool_name, 1);
+#ifdef HAVE_TOUCHLOCK
+ touched_lock = time (0);
+#endif
+ lockcount = 5;
+ }
+ else
+#endif /* MAIL_USE_MAILLOCK */
+ {
#ifdef MAIL_USE_SYSTEM_LOCK
#ifdef MAIL_USE_LOCKF
- if (lockf (indesc, F_LOCK, 0) < 0) pfatal_with_name (inname);
+ status = lockf (indesc, F_LOCK, 0);
#else /* not MAIL_USE_LOCKF */
#ifdef XENIX
- if (locking (indesc, LK_RLCK, 0L) < 0) pfatal_with_name (inname);
+ status = locking (indesc, LK_RLCK, 0L);
#else
#ifdef WINDOWSNT
- if (locking (indesc, LK_RLCK, -1L) < 0) pfatal_with_name (inname);
+ status = locking (indesc, LK_RLCK, -1L);
#else
- if (flock (indesc, LOCK_EX) < 0) pfatal_with_name (inname);
+ status = flock (indesc, LOCK_EX);
#endif
#endif
#endif /* not MAIL_USE_LOCKF */
#endif /* MAIL_USE_SYSTEM_LOCK */
+ }
+ /* If it fails, retry up to 5 times
+ for certain failure codes. */
+ if (status < 0)
+ {
+ if (++lockcount <= 5)
+ {
+#ifdef EAGAIN
+ if (errno == EAGAIN)
+ {
+ sleep (1);
+ goto retry_lock;
+ }
+#endif
+#ifdef EBUSY
+ if (errno == EBUSY)
+ {
+ sleep (1);
+ goto retry_lock;
+ }
+#endif
+ }
+
+ pfatal_with_name (inname);
+ }
+
{
char buf[1024];
}
if (nread < sizeof buf)
break;
+#if defined (MAIL_USE_MAILLOCK) && defined (HAVE_TOUCHLOCK)
+ if (spool_name)
+ {
+ now = time (0);
+ if (now - touched_lock > 60)
+ {
+ touchlock ();
+ touched_lock = now;
+ }
+ }
+#endif /* MAIL_USE_MAILLOCK */
}
}
-#ifdef BSD
+#ifdef BSD_SYSTEM
if (fsync (outdesc) < 0)
pfatal_and_delete (outname);
#endif
pfatal_and_delete (outname);
#ifdef MAIL_USE_SYSTEM_LOCK
+ if (! preserve_mail)
+ {
#if defined (STRIDE) || defined (XENIX) || defined (WINDOWSNT)
- /* Stride, xenix have file locking, but no ftruncate. This mess will do. */
- close (open (inname, O_CREAT | O_TRUNC | O_RDWR, 0666));
+ /* Stride, xenix have file locking, but no ftruncate.
+ This mess will do. */
+ close (open (inname, O_CREAT | O_TRUNC | O_RDWR, 0666));
#else
- ftruncate (indesc, 0L);
+ ftruncate (indesc, 0L);
#endif /* STRIDE or XENIX */
+ }
#endif /* MAIL_USE_SYSTEM_LOCK */
#ifdef MAIL_USE_MMDF
#endif
#ifndef MAIL_USE_SYSTEM_LOCK
- /* Delete the input file; if we can't, at least get rid of its
- contents. */
+ if (! preserve_mail)
+ {
+ /* Delete the input file; if we can't, at least get rid of its
+ contents. */
#ifdef MAIL_UNLINK_SPOOL
- /* This is generally bad to do, because it destroys the permissions
- that were set on the file. Better to just empty the file. */
- if (unlink (inname) < 0 && errno != ENOENT)
+ /* This is generally bad to do, because it destroys the permissions
+ that were set on the file. Better to just empty the file. */
+ if (unlink (inname) < 0 && errno != ENOENT)
#endif /* MAIL_UNLINK_SPOOL */
- creat (inname, 0600);
+ creat (inname, 0600);
+ }
#endif /* not MAIL_USE_SYSTEM_LOCK */
+#ifdef MAIL_USE_MAILLOCK
+ /* This has to occur in the child, i.e., in the process that
+ acquired the lock! */
+ if (spool_name)
+ mailunlock ();
+#endif
exit (0);
}
exit (WRETCODE (status));
#if !defined (MAIL_USE_MMDF) && !defined (MAIL_USE_SYSTEM_LOCK)
- unlink (lockname);
+#ifdef MAIL_USE_MAILLOCK
+ if (! spool_name)
+#endif /* MAIL_USE_MAILLOCK */
+ unlink (lockname);
#endif /* not MAIL_USE_MMDF and not MAIL_USE_SYSTEM_LOCK */
#endif /* ! DISABLE_DIRECT_ACCESS */
return 0;
}
+
+#ifdef MAIL_USE_MAILLOCK
+/* This function uses stat to confirm that the mail directory is
+ identical to the directory of the input file, rather than just
+ string-comparing the two paths, because one or both of them might
+ be symbolic links pointing to some other directory. */
+static char *
+mail_spool_name (inname)
+ char *inname;
+{
+ struct stat stat1, stat2;
+ char *indir, *fname;
+ int status;
+
+ if (! (fname = rindex (inname, '/')))
+ return NULL;
+
+ fname++;
+
+ if (stat (MAILDIR, &stat1) < 0)
+ return NULL;
+
+ indir = (char *) xmalloc (fname - inname + 1);
+ strncpy (indir, inname, fname - inname);
+ indir[fname-inname] = '\0';
+
+
+ status = stat (indir, &stat2);
+
+ free (indir);
+
+ if (status < 0)
+ return NULL;
+
+ if (stat1.st_dev == stat2.st_dev
+ && stat1.st_ino == stat2.st_ino)
+ return fname;
+
+ return NULL;
+}
+#endif /* MAIL_USE_MAILLOCK */
\f
/* Print error message and exit. */
#undef _WINSOCKAPI_
#include <winsock.h>
#endif
-#include <stdio.h>
#include <pwd.h>
-#ifdef USG
-#include <fcntl.h>
-/* Cancel substitutions made by config.h for Emacs. */
-#undef open
-#undef read
-#undef write
-#undef close
-#endif /* USG */
-
#define NOTOK (-1)
#define OK 0
#define DONE 1
char obuffer[BUFSIZ];
char Errmsg[80];
-popmail (user, outfile, password)
+popmail (user, outfile, preserve, password, reverse_order)
char *user;
char *outfile;
+ int preserve;
char *password;
+ int reverse_order;
{
int nmsgs, nbytes;
register int i;
int mbfi;
FILE *mbf;
char *getenv ();
- int mbx_write ();
popserver server;
- extern char *strerror ();
+ int start, end, increment;
server = pop_open (0, user, password, POP_NO_GETPASS);
if (! server)
return (1);
}
- for (i = 1; i <= nmsgs; i++)
+ if (reverse_order)
+ {
+ start = nmsgs;
+ end = 1;
+ increment = -1;
+ }
+ else
+ {
+ start = 1;
+ end = nmsgs;
+ increment = 1;
+ }
+
+ for (i = start; i * increment <= end * increment; i += increment)
{
mbx_delimit_begin (mbf);
- if (pop_retr (server, i, mbx_write, mbf) != OK)
+ if (pop_retr (server, i, mbf) != OK)
{
error (Errmsg);
close (mbfi);
* directories have lost mail when over quota because these checks were
* not made in previous versions of movemail. */
-#ifdef BSD
+#ifdef BSD_SYSTEM
if (fsync (mbfi) < 0)
{
error ("Error in fsync: %s", strerror (errno));
return (1);
}
- for (i = 1; i <= nmsgs; i++)
- {
- if (pop_delete (server, i))
- {
- error (pop_error);
- pop_close (server);
- return (1);
- }
- }
+ if (! preserve)
+ for (i = 1; i <= nmsgs; i++)
+ {
+ if (pop_delete (server, i))
+ {
+ error (pop_error);
+ pop_close (server);
+ return (1);
+ }
+ }
if (pop_quit (server))
{
return (0);
}
-pop_retr (server, msgno, action, arg)
+int
+pop_retr (server, msgno, arg)
popserver server;
- int (*action)();
+ FILE *arg;
{
extern char *strerror ();
char *line;
return (NOTOK);
}
- while (! (ret = pop_retrieve_next (server, &line)))
+ while ((ret = pop_retrieve_next (server, &line)) >= 0)
{
if (! line)
break;
- if ((*action)(line, arg) != OK)
+ if (mbx_write (line, ret, arg) != OK)
{
strcpy (Errmsg, strerror (errno));
pop_close (server);
&& (a[4] == ' '))
int
-mbx_write (line, mbf)
+mbx_write (line, len, mbf)
char *line;
+ int len;
FILE *mbf;
{
+#ifdef MOVEMAIL_QUOTE_POP_FROM_LINES
if (IS_FROM_LINE (line))
{
if (fputc ('>', mbf) == EOF)
return (NOTOK);
}
- if (fputs (line, mbf) == EOF)
+#endif
+ if (line[0] == '\037')
+ {
+ if (fputs ("^_", mbf) == EOF)
+ return (NOTOK);
+ line++;
+ len--;
+ }
+ if (fwrite (line, 1, len, mbf) != len)
return (NOTOK);
if (fputc (0x0a, mbf) == EOF)
return (NOTOK);