502 lines
12 KiB
C
502 lines
12 KiB
C
// SPDX-FileCopyrightText: 2000-2002 Michael R. Elkins <me@mutt.org>
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// SPDX-FileCopyrightText: 2002-2022 Oswald Buddenhagen <ossi@users.sf.net>
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// SPDX-License-Identifier: GPL-2.0-or-later WITH LicenseRef-isync-GPL-exception
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/*
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* mbsync - mailbox synchronizer
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*/
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#include "main_p.h"
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#include <fcntl.h>
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#include <signal.h>
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#include <sys/wait.h>
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#ifdef __linux__
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# include <sys/prctl.h>
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#endif
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static void ATTR_NORETURN
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version( void )
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{
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puts( PACKAGE " " VERSION );
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exit( 0 );
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}
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static void ATTR_NORETURN
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usage( int code )
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{
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fputs(
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PACKAGE " " VERSION " - mailbox synchronizer\n"
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"Copyright (C) 2000-2002 Michael R. Elkins <me@mutt.org>\n"
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"Copyright (C) 2002-2022 Oswald Buddenhagen <ossi@users.sf.net>\n"
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"Copyright (C) 2004 Theodore Ts'o <tytso@mit.edu>\n"
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"usage:\n"
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" " EXE " [flags] {{channel[:box,...]|group} ...|-a}\n"
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" -a, --all operate on all defined channels\n"
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" -l, --list list mailboxes instead of syncing them\n"
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" -ls, --list-stores raw listing of stores' mailboxes\n"
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" -n, --new propagate new messages\n"
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" -d, --delete propagate message deletions\n"
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" -f, --flags propagate message flag changes\n"
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" -N, --renew propagate previously not propagated new messages\n"
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" -L, --pull propagate from far to near side\n"
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" -H, --push propagate from near to far side\n"
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" -C, --create propagate creations of mailboxes\n"
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" -R, --remove propagate deletions of mailboxes\n"
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" -X, --expunge expunge deleted messages\n"
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" -c, --config CONFIG read an alternate config file (default: ~/." EXE "rc)\n"
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" -D, --debug debugging modes (see manual)\n"
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" -V, --verbose display what is happening\n"
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" -q, --quiet don't display progress counters\n"
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" -v, --version display version\n"
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" -h, --help display this help message\n"
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"\nIf neither --pull nor --push are specified, both are active.\n"
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"If neither --new, --delete, --flags nor --renew are specified, all are active.\n"
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"Direction and operation can be concatenated like --pull-new, etc.\n"
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"--create, --remove, and --expunge can be suffixed with -far/-near.\n"
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"See the man page for details.\n"
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"\nSupported mailbox formats are: IMAP4rev1, Maildir\n"
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"\nCompile time options:\n"
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#ifdef HAVE_LIBSSL
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" +HAVE_LIBSSL"
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#else
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" -HAVE_LIBSSL"
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#endif
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#ifdef HAVE_LIBSASL
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" +HAVE_LIBSASL"
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#else
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" -HAVE_LIBSASL"
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#endif
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#ifdef HAVE_LIBZ
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" +HAVE_LIBZ"
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#else
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" -HAVE_LIBZ"
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#endif
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#ifdef USE_DB
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" +USE_DB"
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#else
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" -USE_DB"
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#endif
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#ifdef HAVE_IPV6
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" +HAVE_IPV6\n"
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#else
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" -HAVE_IPV6\n"
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#endif
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, code ? stderr : stdout );
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exit( code );
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}
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#ifdef __linux__
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static void ATTR_NORETURN
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crashHandler( int n )
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{
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int dpid;
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char pbuf[10], pabuf[20];
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close( 0 );
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open( "/dev/tty", O_RDWR );
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dup2( 0, 1 );
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dup2( 0, 2 );
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error( "*** " EXE " caught signal %d. Starting debugger ...\n", n );
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#ifdef PR_SET_PTRACER
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int pip[2];
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if (pipe( pip ) < 0) {
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perror( "pipe()" );
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exit( 3 );
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}
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#endif
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switch ((dpid = fork())) {
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case -1:
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perror( "fork()" );
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break;
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case 0:
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#ifdef PR_SET_PTRACER
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close( pip[1] );
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read( pip[0], pbuf, 1 );
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close( pip[0] );
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#endif
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sprintf( pbuf, "%d", Pid );
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sprintf( pabuf, "/proc/%d/exe", Pid );
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execlp( "gdb", "gdb", pabuf, pbuf, (char *)0 );
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perror( "execlp()" );
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_exit( 1 );
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default:
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#ifdef PR_SET_PTRACER
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prctl( PR_SET_PTRACER, (ulong)dpid );
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close( pip[1] );
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close( pip[0] );
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#endif
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waitpid( dpid, NULL, 0 );
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break;
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}
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exit( 3 );
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}
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#endif
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void
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countStep( void )
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{
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if (!--JLimit)
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exit( 100 );
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}
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int
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main( int argc, char **argv )
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{
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core_vars_t mvars[1];
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char *config = NULL, *opt, *ochar;
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int oind, cops = 0, op, ms_warn = 0;
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tzset();
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gethostname( Hostname, sizeof(Hostname) );
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if ((ochar = strchr( Hostname, '.' )))
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*ochar = 0;
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Pid = getpid();
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if (!(Home = getenv("HOME"))) {
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fputs( "Fatal: $HOME not set\n", stderr );
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return 1;
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}
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arc4_init();
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memset( mvars, 0, sizeof(*mvars) );
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for (oind = 1, ochar = NULL; ; ) {
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if (!ochar || !*ochar) {
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if (oind >= argc)
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break;
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if (argv[oind][0] != '-')
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break;
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if (argv[oind][1] == '-') {
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opt = argv[oind++] + 2;
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if (!*opt)
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break;
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if (!strcmp( opt, "config" )) {
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if (oind >= argc) {
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error( "--config requires an argument.\n" );
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return 1;
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}
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config = argv[oind++];
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} else if (starts_with( opt, -1, "config=", 7 )) {
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config = opt + 7;
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} else if (!strcmp( opt, "all" )) {
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mvars->all = 1;
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} else if (!strcmp( opt, "list" )) {
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mvars->list = 1;
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} else if (!strcmp( opt, "list-stores" )) {
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mvars->list_stores = 1;
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} else if (!strcmp( opt, "help" )) {
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usage( 0 );
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} else if (!strcmp( opt, "version" )) {
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version();
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} else if (!strcmp( opt, "quiet" )) {
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if (Verbosity > VERYQUIET)
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Verbosity--;
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} else if (!strcmp( opt, "verbose" )) {
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Verbosity = VERBOSE;
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} else if (starts_with( opt, -1, "debug", 5 )) {
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opt += 5;
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if (!*opt)
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op = DEBUG_ALL;
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else if (!strcmp( opt, "-crash" ))
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op = DEBUG_CRASH;
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else if (!strcmp( opt, "-driver" ))
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op = DEBUG_DRV;
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else if (!strcmp( opt, "-driver-all" ))
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op = DEBUG_DRV | DEBUG_DRV_ALL;
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else if (!strcmp( opt, "-maildir" ))
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op = DEBUG_MAILDIR;
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else if (!strcmp( opt, "-main" ))
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op = DEBUG_MAIN;
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else if (!strcmp( opt, "-net" ))
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op = DEBUG_NET;
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else if (!strcmp( opt, "-net-all" ))
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op = DEBUG_NET | DEBUG_NET_ALL;
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else if (!strcmp( opt, "-sync" ))
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op = DEBUG_SYNC;
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else
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goto badopt;
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DFlags |= op;
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} else if (!strcmp( opt, "pull" )) {
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cops |= XOP_PULL, mvars->ops[F] |= XOP_HAVE_TYPE;
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} else if (!strcmp( opt, "push" )) {
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cops |= XOP_PUSH, mvars->ops[F] |= XOP_HAVE_TYPE;
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} else if (starts_with( opt, -1, "create", 6 )) {
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opt += 6;
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op = OP_CREATE|XOP_HAVE_CREATE;
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lcop:
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if (!*opt)
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cops |= op;
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else if (!strcmp( opt, "-far" ))
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mvars->ops[F] |= op;
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else if (!strcmp( opt, "-master" )) // Pre-1.4 legacy
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mvars->ops[F] |= op, ms_warn = 1;
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else if (!strcmp( opt, "-near" ))
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mvars->ops[N] |= op;
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else if (!strcmp( opt, "-slave" )) // Pre-1.4 legacy
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mvars->ops[N] |= op, ms_warn = 1;
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else
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goto badopt;
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mvars->ops[F] |= op & (XOP_HAVE_CREATE | XOP_HAVE_REMOVE | XOP_HAVE_EXPUNGE);
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} else if (starts_with( opt, -1, "remove", 6 )) {
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opt += 6;
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op = OP_REMOVE|XOP_HAVE_REMOVE;
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goto lcop;
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} else if (starts_with( opt, -1, "expunge", 7 )) {
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opt += 7;
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op = OP_EXPUNGE|XOP_HAVE_EXPUNGE;
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goto lcop;
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} else if (!strcmp( opt, "no-expunge" )) {
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mvars->ops[F] |= XOP_EXPUNGE_NOOP | XOP_HAVE_EXPUNGE;
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} else if (!strcmp( opt, "no-create" )) {
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mvars->ops[F] |= XOP_CREATE_NOOP | XOP_HAVE_CREATE;
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} else if (!strcmp( opt, "no-remove" )) {
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mvars->ops[F] |= XOP_REMOVE_NOOP | XOP_HAVE_REMOVE;
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} else if (!strcmp( opt, "full" )) {
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mvars->ops[F] |= XOP_HAVE_TYPE | XOP_PULL | XOP_PUSH;
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} else if (!strcmp( opt, "noop" )) {
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mvars->ops[F] |= XOP_TYPE_NOOP | XOP_HAVE_TYPE;
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} else if (starts_with( opt, -1, "pull", 4 )) {
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op = XOP_PULL;
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lcac:
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opt += 4;
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if (!*opt) {
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cops |= op;
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} else if (*opt == '-') {
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opt++;
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goto rlcac;
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} else {
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goto badopt;
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}
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} else if (starts_with( opt, -1, "push", 4 )) {
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op = XOP_PUSH;
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goto lcac;
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} else {
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op = 0;
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rlcac:
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if (!strcmp( opt, "new" )) {
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op |= OP_NEW;
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} else if (!strcmp( opt, "renew" )) {
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op |= OP_RENEW;
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} else if (!strcmp( opt, "delete" )) {
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op |= OP_DELETE;
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} else if (!strcmp( opt, "flags" )) {
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op |= OP_FLAGS;
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} else {
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badopt:
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error( "Unknown option '%s'\n", argv[oind - 1] );
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return 1;
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}
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switch (op & XOP_MASK_DIR) {
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case XOP_PULL: mvars->ops[N] |= op & OP_MASK_TYPE; break;
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case XOP_PUSH: mvars->ops[F] |= op & OP_MASK_TYPE; break;
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default: cops |= op; break;
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}
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mvars->ops[F] |= XOP_HAVE_TYPE;
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}
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continue;
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}
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ochar = argv[oind++] + 1;
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if (!*ochar) {
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error( "Invalid option '-'\n" );
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return 1;
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}
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}
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switch (*ochar++) {
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case 'a':
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mvars->all = 1;
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break;
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case 'l':
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if (*ochar == 's')
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mvars->list_stores = 1, ochar++;
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else
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mvars->list = 1;
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break;
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case 'c':
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if (oind >= argc) {
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error( "-c requires an argument.\n" );
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return 1;
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}
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config = argv[oind++];
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break;
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case 'C':
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op = OP_CREATE|XOP_HAVE_CREATE;
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cop:
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if (*ochar == 'f')
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mvars->ops[F] |= op, ochar++;
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else if (*ochar == 'm') // Pre-1.4 legacy
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mvars->ops[F] |= op, ms_warn = 1, ochar++;
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else if (*ochar == 'n')
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mvars->ops[N] |= op, ochar++;
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else if (*ochar == 's') // Pre-1.4 legacy
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mvars->ops[N] |= op, ms_warn = 1, ochar++;
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else if (*ochar == '-')
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ochar++;
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else
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cops |= op;
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mvars->ops[F] |= op & (XOP_HAVE_CREATE | XOP_HAVE_REMOVE | XOP_HAVE_EXPUNGE);
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break;
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case 'R':
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op = OP_REMOVE|XOP_HAVE_REMOVE;
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goto cop;
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case 'X':
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op = OP_EXPUNGE|XOP_HAVE_EXPUNGE;
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goto cop;
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case 'F':
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cops |= XOP_PULL|XOP_PUSH;
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mvars->ops[F] |= XOP_HAVE_TYPE;
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break;
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case '0':
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mvars->ops[F] |= XOP_TYPE_NOOP | XOP_HAVE_TYPE;
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break;
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case 'n':
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case 'd':
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case 'f':
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case 'N':
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--ochar;
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op = 0;
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cac:
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for (;; ochar++) {
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if (*ochar == 'n')
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op |= OP_NEW;
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else if (*ochar == 'd')
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op |= OP_DELETE;
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else if (*ochar == 'f')
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op |= OP_FLAGS;
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else if (*ochar == 'N')
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op |= OP_RENEW;
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else
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break;
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}
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if (op & OP_MASK_TYPE) {
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switch (op & XOP_MASK_DIR) {
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case XOP_PULL: mvars->ops[N] |= op & OP_MASK_TYPE; break;
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case XOP_PUSH: mvars->ops[F] |= op & OP_MASK_TYPE; break;
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default: cops |= op; break;
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}
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} else {
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cops |= op;
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}
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mvars->ops[F] |= XOP_HAVE_TYPE;
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break;
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case 'L':
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op = XOP_PULL;
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goto cac;
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case 'H':
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op = XOP_PUSH;
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goto cac;
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case 'q':
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if (Verbosity > VERYQUIET)
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Verbosity--;
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break;
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case 'V':
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Verbosity = VERBOSE;
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break;
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case 'D':
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for (op = 0; *ochar; ochar++) {
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switch (*ochar) {
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case 'C':
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op |= DEBUG_CRASH;
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break;
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case 'd':
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op |= DEBUG_DRV;
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break;
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case 'D':
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op |= DEBUG_DRV | DEBUG_DRV_ALL;
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break;
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case 'm':
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op |= DEBUG_MAILDIR;
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break;
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case 'M':
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op |= DEBUG_MAIN;
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break;
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case 'n':
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op |= DEBUG_NET;
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break;
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case 'N':
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op |= DEBUG_NET | DEBUG_NET_ALL;
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break;
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case 's':
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op |= DEBUG_SYNC;
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break;
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default:
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error( "Unknown -D flag '%c'\n", *ochar );
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return 1;
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}
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}
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if (!op)
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op = DEBUG_ALL;
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DFlags |= op;
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break;
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case 'T':
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for (; *ochar; ) {
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switch (*ochar++) {
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case 'a':
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DFlags |= FORCEASYNC(F);
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break;
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case 'A':
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DFlags |= FORCEASYNC(F) | FORCEASYNC(N);
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break;
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case 'j':
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DFlags |= KEEPJOURNAL;
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break;
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case 'J':
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DFlags |= FORCEJOURNAL;
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break;
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case 's':
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JLimit = strtol( ochar, &ochar, 10 );
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break;
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case 'x':
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DFlags |= FAKEEXPUNGE;
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break;
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case 'z':
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DFlags |= ZERODELAY;
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break;
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default:
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error( "Unknown -T flag '%c'\n", *(ochar - 1) );
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return 1;
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}
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}
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break;
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case 'v':
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version();
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case 'h':
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usage( 0 );
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default:
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error( "Unknown option '-%c'\n", *(ochar - 1) );
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return 1;
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}
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}
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if (ms_warn)
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warn( "Notice: -master/-slave/m/s suffixes are deprecated; use -far/-near/f/n instead.\n" );
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if (DFlags & DEBUG_ANY) {
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Verbosity = VERBOSE;
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fputs( PACKAGE " " VERSION " called with:", stdout );
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for (op = 1; op < argc; op++)
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printf( " '%s'", argv[op] );
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puts( "" );
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} else if (Verbosity >= TERSE && isatty( 1 )) {
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DFlags |= PROGRESS;
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}
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#ifdef __linux__
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if (DFlags & DEBUG_CRASH) {
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signal( SIGSEGV, crashHandler );
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signal( SIGBUS, crashHandler );
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signal( SIGILL, crashHandler );
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}
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#endif
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if (merge_ops( cops, mvars->ops, NULL ))
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return 1;
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if (load_config( config ))
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return 1;
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if (mvars->list_stores)
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list_stores( mvars, argv + oind );
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else
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sync_chans( mvars, argv + oind );
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return mvars->ret;
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}
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