fetchmail.c
上传用户:xxcykj
上传日期:2007-01-04
资源大小:727k
文件大小:54k
- /*
- * fetchmail.c -- main driver module for fetchmail
- *
- * For license terms, see the file COPYING in this directory.
- */
- #include "config.h"
- #include <stdio.h>
- #include <ctype.h>
- #if defined(STDC_HEADERS)
- #include <stdlib.h>
- #endif
- #if defined(HAVE_UNISTD_H)
- #include <unistd.h>
- #endif
- #include <fcntl.h>
- #include <string.h>
- #include <signal.h>
- #include <getopt.h>
- #if defined(HAVE_SYSLOG)
- #include <syslog.h>
- #endif
- #include <pwd.h>
- #ifdef __FreeBSD__
- #include <grp.h>
- #endif
- #include <errno.h>
- #include <sys/time.h>
- #include <sys/types.h>
- #include <sys/stat.h>
- #ifdef HAVE_SETRLIMIT
- #include <sys/resource.h>
- #endif /* HAVE_SETRLIMIT */
- #ifdef HAVE_SYS_WAIT_H
- #include <sys/wait.h>
- #endif /* HAVE_SYS_WAIT_H */
- #include <sys/utsname.h>
- #ifdef HAVE_GETHOSTBYNAME
- #include <netdb.h>
- #endif /* HAVE_GETHOSTBYNAME */
- #ifdef HESIOD
- #include <hesiod.h>
- #endif
- #include "fetchmail.h"
- #include "tunable.h"
- #include "smtp.h"
- #include "netrc.h"
- #include "i18n.h"
- #ifndef ENETUNREACH
- #define ENETUNREACH 128 /* Interactive doesn't know this */
- #endif /* ENETUNREACH */
- /* prototypes for internal functions */
- static int load_params(int, char **, int);
- static void dump_params (struct runctl *runp, struct query *, flag implicit);
- static int query_host(struct query *);
- /* controls the detail level of status/progress messages written to stderr */
- int outlevel; /* see the O_.* constants above */
- /* miscellaneous global controls */
- struct runctl run; /* global controls for this run */
- flag nodetach; /* if TRUE, don't detach daemon process */
- flag quitmode; /* if --quit was set */
- flag check_only; /* if --probe was set */
- flag versioninfo; /* emit only version info */
- char *user; /* the name of the invoking user */
- char *home; /* invoking user's home directory */
- char *program_name; /* the name to prefix error messages with */
- flag configdump; /* dump control blocks for configurator */
- const char *fetchmailhost; /* either `localhost' or the host's FQDN */
- volatile int lastsig; /* last signal received */
- #if NET_SECURITY
- void *request = NULL;
- int requestlen = 0;
- #endif /* NET_SECURITY */
- static char *lockfile; /* name of lockfile */
- static int lock_acquired; /* have we acquired a lock */
- static int querystatus; /* status of query */
- static int successes; /* count number of successful polls */
- static struct runctl cmd_run; /* global options set from command line */
- static time_t parsetime; /* time of last parse */
- static void terminate_run(int);
- static void terminate_poll(int);
- #ifdef SLEEP_WITH_ALARM
- /*
- * The function of this variable is to remove the window during which a
- * SIGALRM can hose the code (ALARM is triggered *before* pause() is called).
- * This is a bit of a kluge; the real right thing would use sigprocmask(),
- * sigsuspend(). This workaround lets the interval timer trigger the first
- * alarm after the required interval and will then generate alarms all 5
- * seconds, until it is certain, that the critical section (ie., the window)
- * is left.
- */
- #if defined(STDC_HEADERS)
- static sig_atomic_t alarm_latch = FALSE;
- #else
- /* assume int can be written in one atomic operation on non ANSI-C systems */
- static int alarm_latch = FALSE;
- #endif
- RETSIGTYPE gotsigalrm(sig)
- int sig;
- {
- signal(sig, gotsigalrm);
- lastsig = sig;
- alarm_latch = TRUE;
- }
- #endif /* SLEEP_WITH_ALARM */
- RETSIGTYPE donothing(int sig) {signal(sig, donothing); lastsig = sig;}
- #ifdef HAVE_ON_EXIT
- static void unlockit(int n, void *p)
- #else
- static void unlockit(void)
- #endif
- /* must-do actions for exit (but we can't count on being able to do malloc) */
- {
- if (lockfile && lock_acquired)
- unlink(lockfile);
- }
- #ifdef __EMX__
- /* Various EMX-specific definitions */
- int itimerflag;
- void itimerthread(void* dummy) {
- if (outlevel >= O_VERBOSE)
- report(stderr, _("fetchmail: thread sleeping for %d sec.n"), poll_interval);
- while(1) {
- _sleep2(poll_interval*1000);
- kill((getpid()), SIGALRM);
- }
- }
- #endif
- #ifdef __FreeBSD__
- /* drop SGID kmem privileage until we need it */
- static void dropprivs(void)
- {
- struct group *gr;
- gid_t egid;
- gid_t rgid;
-
- egid = getegid();
- rgid = getgid();
- gr = getgrgid(egid);
-
- if (gr && !strcmp(gr->gr_name, "kmem"))
- {
- extern void interface_set_gids(gid_t egid, gid_t rgid);
- interface_set_gids(egid, rgid);
- setegid(rgid);
- }
- }
- #endif
- int main(int argc, char **argv)
- {
- int st, bkgd = FALSE;
- int parsestatus, implicitmode = FALSE;
- FILE *lockfp;
- struct query *ctl;
- netrc_entry *netrc_list;
- char *netrc_file, *tmpbuf;
- pid_t pid;
- #ifdef __FreeBSD__
- dropprivs();
- #endif
- envquery(argc, argv);
- #ifdef ENABLE_NLS
- bindtextdomain(PACKAGE, LOCALEDIR);
- textdomain(PACKAGE);
- #endif
- /*
- * Note: because we can't initialize reporting before we know whether
- * syslog is supposed to be on, this message will go to stdout and
- * be lost when running in background.
- */
- if (outlevel >= O_VERBOSE)
- {
- int i;
- report(stdout, "fetchmail: invoked with");
- for (i = 0; i < argc; i++)
- report(stdout, " %s", argv[i]);
- report(stdout, "n");
- }
- #define IDFILE_NAME ".fetchids"
- run.idfile = (char *) xmalloc(strlen(home)+sizeof(IDFILE_NAME)+1);
- strcpy(run.idfile, home);
- strcat(run.idfile, "/");
- strcat(run.idfile, IDFILE_NAME);
-
- outlevel = O_NORMAL;
- /*
- * We used to arrange for the lockfile to be removed on exit close
- * to where the lock was asserted. Now we need to do it here, because
- * we might have re-executed in background with an existing lockfile
- * as the result of a changed rcfile (see the code near the execvp(3)
- * call near the beginning of the polling loop for details). We want
- * to be sure the lockfile gets nuked on any error exit, basically.
- */
- #ifdef HAVE_ATEXIT
- atexit(unlockit);
- #endif
- #ifdef HAVE_ON_EXIT
- on_exit(unlockit, (char *)NULL);
- #endif
- if ((parsestatus = parsecmdline(argc,argv, &cmd_run, &cmd_opts)) < 0)
- exit(PS_SYNTAX);
- if (versioninfo)
- {
- printf(_("This is fetchmail release %s"), VERSION);
- #ifdef POP2_ENABLE
- printf("+POP2");
- #endif /* POP2_ENABLE */
- #ifndef POP3_ENABLE
- printf("-POP3");
- #endif /* POP3_ENABLE */
- #ifndef IMAP_ENABLE
- printf("-IMAP");
- #endif /* IMAP_ENABLE */
- #ifdef GSSAPI
- printf("+IMAP-GSS");
- #endif /* GSSAPI */
- #ifdef RPA_ENABLE
- printf("+RPA");
- #endif /* RPA_ENABLE */
- #ifdef NTLM_ENABLE
- printf("+NTLM");
- #endif /* NTLM_ENABLE */
- #ifdef SDPS_ENABLE
- printf("+SDPS");
- #endif /* SDPS_ENABLE */
- #ifndef ETRN_ENABLE
- printf("-ETRN");
- #endif /* ETRN_ENABLE */
- #ifdef SSL_ENABLE
- printf("+SSL");
- #endif
- #if OPIE_ENABLE
- printf("+OPIE");
- #endif /* OPIE_ENABLE */
- #if INET6_ENABLE
- printf("+INET6");
- #endif /* INET6_ENABLE */
- #if NET_SECURITY
- printf("+NETSEC");
- #endif /* NET_SECURITY */
- #ifdef HAVE_SOCKS
- printf("+SOCKS");
- #endif /* HAVE_SOCKS */
- #if ENABLE_NLS
- printf("+NLS");
- #endif /* ENABLE_NLS */
- putchar('n');
- fflush(stdout);
- /* this is an attempt to help remote debugging */
- system("uname -a");
- }
- /* avoid parsing the config file if all we're doing is killing a daemon */
- if (!(quitmode && argc == 2))
- implicitmode = load_params(argc, argv, optind);
- #if defined(HAVE_SYSLOG)
- /* logging should be set up early in case we were restarted from exec */
- if (run.use_syslog)
- {
- openlog(program_name, LOG_PID, LOG_MAIL);
- report_init(-1);
- }
- else
- #endif
- report_init((run.poll_interval == 0 || nodetach) && !run.logfile);
- /* set up to do lock protocol */
- #define FETCHMAIL_PIDFILE "fetchmail.pid"
- if (!getuid()) {
- xalloca(tmpbuf, char *,
- sizeof(PID_DIR) + sizeof(FETCHMAIL_PIDFILE));
- sprintf(tmpbuf, "%s/%s", PID_DIR, FETCHMAIL_PIDFILE);
- } else {
- xalloca(tmpbuf, char *, strlen(home) + sizeof(FETCHMAIL_PIDFILE) + 2);
- strcpy(tmpbuf, home);
- strcat(tmpbuf, "/.");
- strcat(tmpbuf, FETCHMAIL_PIDFILE);
- }
- #undef FETCHMAIL_PIDFILE
- #ifdef HAVE_SETRLIMIT
- /*
- * Before getting passwords, disable core dumps unless -v -d0 mode is on.
- * Core dumps could otherwise contain passwords to be scavenged by a
- * cracker.
- */
- if (outlevel < O_VERBOSE || run.poll_interval > 0)
- {
- struct rlimit corelimit;
- corelimit.rlim_cur = 0;
- corelimit.rlim_max = 0;
- setrlimit(RLIMIT_CORE, &corelimit);
- }
- #endif /* HAVE_SETRLIMIT */
- #define NETRC_FILE ".netrc"
- /* parse the ~/.netrc file (if present) for future password lookups. */
- xalloca(netrc_file, char *, strlen (home) + sizeof(NETRC_FILE) + 1);
- strcpy (netrc_file, home);
- strcat (netrc_file, "/");
- strcat (netrc_file, NETRC_FILE);
- netrc_list = parse_netrc(netrc_file);
- #undef NETRC_FILE
- /* pick up passwords where we can */
- for (ctl = querylist; ctl; ctl = ctl->next)
- {
- if (ctl->active && !(implicitmode && ctl->server.skip)&&!ctl->password)
- {
- if (ctl->server.preauthenticate == A_KERBEROS_V4 ||
- ctl->server.preauthenticate == A_KERBEROS_V5 ||
- ctl->server.preauthenticate == A_SSH ||
- #ifdef GSSAPI
- ctl->server.protocol == P_IMAP_GSS ||
- #endif /* GSSAPI */
- ctl->server.protocol == P_IMAP_K4)
- /* Server won't care what the password is, but there
- must be some non-null string here. */
- ctl->password = ctl->remotename;
- else
- {
- netrc_entry *p;
- /* look up the pollname and account in the .netrc file. */
- p = search_netrc(netrc_list,
- ctl->server.pollname, ctl->remotename);
- /* if we find a matching entry with a password, use it */
- if (p && p->password)
- ctl->password = xstrdup(p->password);
- /* otherwise try with "via" name if there is one */
- else if (ctl->server.via)
- {
- p = search_netrc(netrc_list,
- ctl->server.via, ctl->remotename);
- if (p && p->password)
- ctl->password = xstrdup(p->password);
- }
- }
- }
- }
- /* perhaps we just want to check options? */
- if (versioninfo)
- {
- int havercfile = access(rcfile, 0);
- printf(_("Taking options from command line%s%sn"),
- havercfile ? "" : _(" and "),
- havercfile ? "" : rcfile);
- if (outlevel >= O_VERBOSE)
- printf(_("Lockfile at %sn"), tmpbuf);
- if (querylist == NULL)
- fprintf(stderr,
- _("No mailservers set up -- perhaps %s is missing?n"),
- rcfile);
- else
- dump_params(&run, querylist, implicitmode);
- exit(0);
- }
- /* dump options as a Python dictionary, for configurator use */
- if (configdump)
- {
- dump_config(&run, querylist);
- exit(0);
- }
- /* check for another fetchmail running concurrently */
- pid = -1;
- if ((lockfile = (char *) malloc(strlen(tmpbuf) + 1)) == NULL)
- {
- report(stderr,_("fetchmail: cannot allocate memory for lock name.n"));
- exit(PS_EXCLUDE);
- }
- else
- (void) strcpy(lockfile, tmpbuf);
- if ((lockfp = fopen(lockfile, "r")) != NULL )
- {
- bkgd = (fscanf(lockfp,"%d %d", &pid, &st) == 2);
- if (kill(pid, 0) == -1) {
- fprintf(stderr,_("fetchmail: removing stale lockfilen"));
- pid = -1;
- bkgd = FALSE;
- unlink(lockfile);
- }
- fclose(lockfp); /* not checking should be safe, file mode was "r" */
- }
- /* if no mail servers listed and nothing in background, we're done */
- if (!(quitmode && argc == 2) && pid == -1 && querylist == NULL) {
- (void)fputs(_("fetchmail: no mailservers have been specified.n"),stderr);
- exit(PS_SYNTAX);
- }
- /* perhaps user asked us to kill the other fetchmail */
- if (quitmode)
- {
- if (pid == -1)
- {
- fprintf(stderr,_("fetchmail: no other fetchmail is runningn"));
- if (argc == 2)
- exit(PS_EXCLUDE);
- }
- else if (kill(pid, SIGTERM) < 0)
- {
- fprintf(stderr,_("fetchmail: error killing %s fetchmail at %d; bailing out.n"),
- bkgd ? _("background") : _("foreground"), pid);
- exit(PS_EXCLUDE);
- }
- else
- {
- fprintf(stderr,_("fetchmail: %s fetchmail at %d killed.n"),
- bkgd ? _("background") : _("foreground"), pid);
- unlink(lockfile);
- if (argc == 2)
- exit(0);
- else
- pid = -1;
- }
- }
- /* another fetchmail is running -- wake it up or die */
- if (pid != -1)
- {
- if (check_only)
- {
- fprintf(stderr,
- _("fetchmail: can't check mail while another fetchmail to same host is running.n"));
- return(PS_EXCLUDE);
- }
- else if (!implicitmode)
- {
- fprintf(stderr,
- _("fetchmail: can't poll specified hosts with another fetchmail running at %d.n"),
- pid);
- return(PS_EXCLUDE);
- }
- else if (!bkgd)
- {
- fprintf(stderr,
- _("fetchmail: another foreground fetchmail is running at %d.n"),
- pid);
- return(PS_EXCLUDE);
- }
- else if (argc > 1)
- {
- /* this test enables re-execing on a changed rcfile */
- if (getpid() == pid)
- lock_acquired = TRUE;
- else
- {
- fprintf(stderr,
- _("fetchmail: can't accept options while a background fetchmail is running.n"));
- return(PS_EXCLUDE);
- }
- }
- else if (kill(pid, SIGUSR1) == 0)
- {
- fprintf(stderr,
- _("fetchmail: background fetchmail at %d awakened.n"),
- pid);
- return(0);
- }
- else
- {
- /*
- * Should never happen -- possible only if a background fetchmail
- * croaks after the first kill probe above but before the
- * SIGUSR1/SIGHUP transmission.
- */
- fprintf(stderr,
- _("fetchmail: elder sibling at %d died mysteriously.n"),
- pid);
- return(PS_UNDEFINED);
- }
- }
- /* pick up interactively any passwords we need but don't have */
- for (ctl = querylist; ctl; ctl = ctl->next)
- {
- if (ctl->active && !(implicitmode && ctl->server.skip)
- && ctl->server.protocol != P_ETRN
- && ctl->server.protocol != P_IMAP_K4
- #ifdef GSSAPI
- && ctl->server.protocol != P_IMAP_GSS
- #endif /* GSSAPI */
- && !ctl->password)
- {
- char* password_prompt = _("Enter password for %s@%s: ");
- xalloca(tmpbuf, char *, strlen(password_prompt) +
- strlen(ctl->remotename) +
- strlen(ctl->server.pollname) + 1);
- (void) sprintf(tmpbuf, password_prompt,
- ctl->remotename, ctl->server.pollname);
- ctl->password = xstrdup((char *)getpassword(tmpbuf));
- }
- }
- /*
- * Time to initiate the SOCKS library (this is not mandatory: it just
- * registers the correct application name for logging purpose. If you
- * have some problem, comment out these lines).
- */
- #ifdef HAVE_SOCKS
- SOCKSinit("fetchmail");
- #endif /* HAVE_SOCKS */
- /*
- * Maybe time to go to demon mode...
- */
- if (run.poll_interval)
- {
- if (!nodetach)
- daemonize(run.logfile, terminate_run);
- report(stdout, _("starting fetchmail %s daemon n"), VERSION);
- /*
- * We'll set up a handler for these when we're sleeping,
- * but ignore them otherwise so as not to interrupt a poll.
- */
- signal(SIGUSR1, SIG_IGN);
- if (run.poll_interval && !getuid())
- signal(SIGHUP, SIG_IGN);
- }
- else if (run.logfile && access(run.logfile, F_OK) == 0)
- {
- freopen(run.logfile, "a", stdout);
- freopen(run.logfile, "a", stderr);
- }
- #ifdef linux
- interface_init();
- #endif /* linux */
- /* beyond here we don't want more than one fetchmail running per user */
- umask(0077);
- signal(SIGABRT, terminate_run);
- signal(SIGINT, terminate_run);
- signal(SIGTERM, terminate_run);
- signal(SIGALRM, terminate_run);
- signal(SIGPIPE, terminate_run);
- signal(SIGQUIT, terminate_run);
- /* here's the exclusion lock */
- if ((st = open(lockfile, O_WRONLY|O_CREAT|O_EXCL|O_SYNC, 0666)) != -1)
- {
- sprintf(tmpbuf,"%d", getpid());
- write(st, tmpbuf, strlen(tmpbuf));
- if (run.poll_interval)
- {
- sprintf(tmpbuf," %d", run.poll_interval);
- write(st, tmpbuf, strlen(tmpbuf));
- }
- close(st); /* should be safe, fd was opened with O_SYNC */
- lock_acquired = TRUE;
- }
- /*
- * Query all hosts. If there's only one, the error return will
- * reflect the status of that transaction.
- */
- do {
- /*
- * Check to see if the rcfile has been touched. If so,
- * re-exec so the file will be reread. Doing it this way
- * avoids all the complications of trying to deallocate the
- * in-core control structures -- and the potential memory
- * leaks...
- */
- struct stat rcstat;
- if (stat(rcfile, &rcstat) == -1)
- {
- if (errno != ENOENT)
- report(stderr,
- _("couldn't time-check %s (error %d)n"),
- rcfile, errno);
- }
- else if (rcstat.st_mtime > parsetime)
- {
- report(stdout, _("restarting fetchmail (%s changed)n"), rcfile);
- execvp("fetchmail", argv);
- report(stderr, _("attempt to re-exec fetchmail failedn"));
- }
- #if defined(HAVE_RES_SEARCH) && defined(USE_TCPIP_FOR_DNS)
- /*
- * This was an efficiency hack that backfired. The theory
- * was that using TCP/IP for DNS queries would get us better
- * reliability and shave off some per-UDP-packet costs.
- * Unfortunately it interacted badly with diald, which effectively
- * filters out DNS queries over TCP/IP for reasons having to do
- * with some obscure kernel problem involving bootstrapping of
- * dynamically-addressed links. I don't understand this mess
- * and don't want to, so it's "See ya!" to this hack.
- */
- sethostent(TRUE); /* use TCP/IP for mailserver queries */
- #endif /* HAVE_RES_SEARCH */
- batchcount = 0;
- for (ctl = querylist; ctl; ctl = ctl->next)
- {
- if (ctl->active && !(implicitmode && ctl->server.skip))
- {
- if (ctl->wedged)
- {
- report(stderr,
- _("poll of %s skipped (failed authentication or too many timeouts)n"),
- ctl->server.pollname);
- continue;
- }
- /* check skip interval first so that it counts all polls */
- if (run.poll_interval && ctl->server.interval)
- {
- if (ctl->server.poll_count++ % ctl->server.interval)
- {
- if (outlevel >= O_VERBOSE)
- report(stdout,
- _("interval not reached, not querying %sn"),
- ctl->server.pollname);
- continue;
- }
- }
- #if (defined(linux) && !INET6_ENABLE) || defined(__FreeBSD__)
- /* interface_approve() does its own error logging */
- if (!interface_approve(&ctl->server))
- continue;
- #endif /* (defined(linux) && !INET6_ENABLE) || defined(__FreeBSD__) */
- querystatus = query_host(ctl);
- #ifdef POP3_ENABLE
- if (!check_only)
- uid_end_query(ctl);
- #endif /* POP3_ENABLE */
- if (querystatus == PS_SUCCESS)
- successes++;
- else if (!check_only &&
- ((querystatus!=PS_NOMAIL) || (outlevel==O_DEBUG)))
- report(stdout, _("Query status=%dn"), querystatus);
- #if (defined(linux) && !INET6_ENABLE) || defined (__FreeBSD__)
- if (ctl->server.monitor)
- {
- /*
- * Allow some time for the link to quiesce. One
- * second is usually sufficient, three is safe.
- * Note: this delay is important - don't remove!
- */
- sleep(3);
- interface_note_activity(&ctl->server);
- }
- #endif /* (defined(linux) && !INET6_ENABLE) || defined(__FreeBSD__) */
- }
- }
- #if defined(HAVE_RES_SEARCH) && defined(USE_TCPIP_FOR_DNS)
- endhostent(); /* release TCP/IP connection to nameserver */
- #endif /* HAVE_RES_SEARCH */
- /* close connections cleanly */
- terminate_poll(0);
- /*
- * OK, we've polled. Now sleep.
- */
- if (run.poll_interval)
- {
- /*
- * Because passwords can expire, it may happen that *all*
- * hosts are now out of the loop due to authfail
- * conditions. If this happens daemon-mode fetchmail
- * should softly and silently vanish away, rather than
- * spinning uselessly.
- */
- int unwedged = 0;
- for (ctl = querylist; ctl; ctl = ctl->next)
- if (ctl->active && !(implicitmode && ctl->server.skip))
- if (!ctl->wedged)
- unwedged++;
- if (!unwedged)
- {
- report(stderr, _("All connections are wedged. Exiting.n"));
- /* FIXME: someday, send notification mail */
- exit(PS_AUTHFAIL);
- }
- if (outlevel >= O_VERBOSE)
- report(stdout,
- _("fetchmail: sleeping at %sn"), rfc822timestamp());
- /*
- * With this simple hack, we make it possible for a foreground
- * fetchmail to wake up one in daemon mode. What we want is the
- * side effect of interrupting any sleep that may be going on,
- * forcing fetchmail to re-poll its hosts. The second line is
- * for people who think all system daemons wake up on SIGHUP.
- */
- signal(SIGUSR1, donothing);
- if (!getuid())
- signal(SIGHUP, donothing);
- /* time for a pause in the action... */
- {
- #ifndef __EMX__
- #ifdef SLEEP_WITH_ALARM /* not normally on */
- /*
- * We can't use sleep(3) here because we need an alarm(3)
- * equivalent in order to implement server nonresponse timeout.
- * We'll just assume setitimer(2) is available since fetchmail
- * has to have a BSDoid socket layer to work at all.
- */
- /*
- * This code stopped working under glibc-2, apparently due
- * to the change in signal(2) semantics. (The siginterrupt
- * line, added later, should fix this problem.) John Stracke
- * <francis@netscape.com> wrote:
- *
- * The problem seems to be that, after hitting the interval
- * timer while talking to the server, the process no longer
- * responds to SIGALRM. I put in printf()s to see when it
- * reached the pause() for the poll interval, and I checked
- * the return from setitimer(), and everything seemed to be
- * working fine, except that the pause() just ignored SIGALRM.
- * I thought maybe the itimer wasn't being fired, so I hit
- * it with a SIGALRM from the command line, and it ignored
- * that, too. SIGUSR1 woke it up just fine, and it proceeded
- * to repoll--but, when the dummy server didn't respond, it
- * never timed out, and SIGALRM wouldn't make it.
- *
- * (continued below...)
- */
- struct itimerval ntimeout;
- ntimeout.it_interval.tv_sec = 5; /* repeat alarm every 5 secs */
- ntimeout.it_interval.tv_usec = 0;
- ntimeout.it_value.tv_sec = run.poll_interval;
- ntimeout.it_value.tv_usec = 0;
- siginterrupt(SIGALRM, 1);
- alarm_latch = FALSE;
- signal(SIGALRM, gotsigalrm); /* first trap signals */
- setitimer(ITIMER_REAL,&ntimeout,NULL); /* then start timer */
- /* there is a very small window between the next two lines */
- /* which could result in a deadlock. But this will now be */
- /* caught by periodical alarms (see it_interval) */
- if (!alarm_latch)
- pause();
- /* stop timer */
- ntimeout.it_interval.tv_sec = ntimeout.it_interval.tv_usec = 0;
- ntimeout.it_value.tv_sec = ntimeout.it_value.tv_usec = 0;
- setitimer(ITIMER_REAL,&ntimeout,NULL); /* now stop timer */
- signal(SIGALRM, SIG_IGN);
- #else
- /*
- * So the workaround I used is to make it sleep by using
- * select() instead of setitimer()/pause(). select() is
- * perfectly happy being called with a timeout and
- * no file descriptors; it just sleeps until it hits the
- * timeout. The only concern I had was that it might
- * implement its timeout with SIGALRM--there are some
- * Unices where this is done, because select() is a library
- * function--but apparently not.
- */
- struct timeval timeout;
- timeout.tv_sec = run.poll_interval;
- timeout.tv_usec = 0;
- do {
- lastsig = 0;
- select(0,0,0,0, &timeout);
- } while (lastsig == SIGCHLD);
- #endif
- #else /* EMX */
- alarm_latch = FALSE;
- signal(SIGALRM, gotsigalrm);
- _beginthread(itimerthread, NULL, 32768, NULL);
- /* see similar code above */
- if (!alarm_latch)
- pause();
- signal(SIGALRM, SIG_IGN);
- #endif /* ! EMX */
- if (lastsig == SIGUSR1
- || ((run.poll_interval && !getuid()) && lastsig == SIGHUP))
- {
- #ifdef SYS_SIGLIST_DECLARED
- report(stdout,
- _("awakened by %sn"), sys_siglist[lastsig]);
- #else
- report(stdout,
- _("awakened by signal %dn"), lastsig);
- #endif
- /* received a wakeup - unwedge all servers in case */
- /* the problem has been manually repaired */
- for (ctl = querylist; ctl; ctl = ctl->next)
- ctl->wedged = FALSE;
- }
- }
- /* now lock out interrupts again */
- signal(SIGUSR1, SIG_IGN);
- if (!getuid())
- signal(SIGHUP, SIG_IGN);
- if (outlevel >= O_VERBOSE)
- report(stdout, _("awakened at %sn"), rfc822timestamp());
- }
- } while
- (run.poll_interval);
- if (outlevel >= O_VERBOSE)
- report(stdout, _("normal termination, status %dn"),
- successes ? PS_SUCCESS : querystatus);
- terminate_run(0);
- exit(successes ? PS_SUCCESS : querystatus);
- }
- static void optmerge(struct query *h2, struct query *h1, int force)
- /* merge two options records */
- {
- /*
- * If force is off, modify h2 fields only when they're empty (treat h1
- * as defaults). If force is on, modify each h2 field whenever h1
- * is nonempty (treat h1 as an override).
- */
- #define LIST_MERGE(dstl, srcl) if (force ? !!srcl : !dstl)
- free_str_list(&dstl),
- append_str_list(&dstl, &srcl)
- LIST_MERGE(h2->server.localdomains, h1->server.localdomains);
- LIST_MERGE(h2->localnames, h1->localnames);
- LIST_MERGE(h2->mailboxes, h1->mailboxes);
- LIST_MERGE(h2->smtphunt, h1->smtphunt);
- LIST_MERGE(h2->antispam, h1->antispam);
- #undef LIST_MERGE
- #define FLAG_MERGE(fld) if (force ? !!h1->fld : !h2->fld) h2->fld = h1->fld
- FLAG_MERGE(server.via);
- FLAG_MERGE(server.protocol);
- #if INET6_ENABLE
- FLAG_MERGE(server.service);
- FLAG_MERGE(server.netsec);
- #else /* INET6_ENABLE */
- FLAG_MERGE(server.port);
- #endif /* INET6_ENABLE */
- FLAG_MERGE(server.interval);
- FLAG_MERGE(server.preauthenticate);
- FLAG_MERGE(server.timeout);
- FLAG_MERGE(server.envelope);
- FLAG_MERGE(server.envskip);
- FLAG_MERGE(server.qvirtual);
- FLAG_MERGE(server.skip);
- FLAG_MERGE(server.dns);
- FLAG_MERGE(server.checkalias);
- FLAG_MERGE(server.uidl);
- #if defined(linux) || defined(__FreeBSD__)
- FLAG_MERGE(server.interface);
- FLAG_MERGE(server.monitor);
- FLAG_MERGE(server.interface_pair);
- #endif /* linux || defined(__FreeBSD__) */
- FLAG_MERGE(server.plugin);
- FLAG_MERGE(server.plugout);
- FLAG_MERGE(wildcard);
- FLAG_MERGE(remotename);
- FLAG_MERGE(password);
- FLAG_MERGE(mda);
- FLAG_MERGE(bsmtp);
- FLAG_MERGE(listener);
- FLAG_MERGE(smtpaddress);
- FLAG_MERGE(preconnect);
- FLAG_MERGE(postconnect);
- FLAG_MERGE(keep);
- FLAG_MERGE(flush);
- FLAG_MERGE(fetchall);
- FLAG_MERGE(rewrite);
- FLAG_MERGE(forcecr);
- FLAG_MERGE(stripcr);
- FLAG_MERGE(pass8bits);
- FLAG_MERGE(dropstatus);
- FLAG_MERGE(mimedecode);
- FLAG_MERGE(limit);
- FLAG_MERGE(warnings);
- FLAG_MERGE(fetchlimit);
- FLAG_MERGE(batchlimit);
- #ifdef SSL_ENABLE
- FLAG_MERGE(use_ssl);
- FLAG_MERGE(sslkey);
- FLAG_MERGE(sslcert);
- #endif
- FLAG_MERGE(expunge);
- FLAG_MERGE(properties);
- #undef FLAG_MERGE
- }
- static int load_params(int argc, char **argv, int optind)
- {
- int implicitmode, st;
- struct passwd *pw;
- struct query def_opts, *ctl;
- struct stat rcstat;
- run.bouncemail = TRUE;
- memset(&def_opts, ' ', sizeof(struct query));
- def_opts.smtp_socket = -1;
- def_opts.smtpaddress = (char *)0;
- #define ANTISPAM(n) save_str(&def_opts.antispam, STRING_DUMMY, 0)->val.status.num = (n)
- ANTISPAM(571); /* sendmail */
- ANTISPAM(550); /* old exim */
- ANTISPAM(501); /* new exim */
- ANTISPAM(554); /* Postfix */
- #undef ANTISPAM
- def_opts.server.protocol = P_AUTO;
- def_opts.server.timeout = CLIENT_TIMEOUT;
- def_opts.warnings = WARNING_INTERVAL;
- def_opts.remotename = user;
- def_opts.listener = SMTP_MODE;
- /* note the parse time, so we can pick up on modifications */
- parsetime = 0; /* foil compiler warnings */
- if (stat(rcfile, &rcstat) != -1)
- parsetime = rcstat.st_mtime;
- else if (errno != ENOENT)
- report(stderr, _("couldn't time-check the run-control filen"));
- /* this builds the host list */
- if ((st = prc_parse_file(rcfile, !versioninfo)) != 0)
- /*
- * FIXME: someday, send notification mail here if backgrounded.
- * Right now, that can happen if the user changes the rcfile
- * while the fetchmail is running in background. Do similarly
- * for the other exit() calls in this function.
- */
- exit(st);
- if ((implicitmode = (optind >= argc)))
- {
- for (ctl = querylist; ctl; ctl = ctl->next)
- ctl->active = TRUE;
- }
- else
- for (; optind < argc; optind++)
- {
- flag predeclared = FALSE;
- /*
- * If hostname corresponds to a host known from the rc file,
- * simply declare it active. Otherwise synthesize a host
- * record from command line and defaults
- */
- for (ctl = querylist; ctl; ctl = ctl->next)
- if (!strcmp(ctl->server.pollname, argv[optind])
- || str_in_list(&ctl->server.akalist, argv[optind], TRUE))
- {
- /* Is this correct? */
- if(predeclared)
- fprintf(stderr,_("Warning: multiple mentions of host %s in config filen"),argv[optind]);
- ctl->active = TRUE;
- predeclared = TRUE;
- }
- if (!predeclared)
- {
- /*
- * Allocate and link record without copying in
- * command-line args; we'll do that with the optmerge
- * call later on.
- */
- ctl = hostalloc((struct query *)NULL);
- ctl->server.via =
- ctl->server.pollname = xstrdup(argv[optind]);
- ctl->active = TRUE;
- ctl->server.lead_server = (struct hostdata *)NULL;
- }
- }
- /*
- * If there's a defaults record, merge it and lose it.
- */
- if (querylist && strcmp(querylist->server.pollname, "defaults") == 0)
- {
- for (ctl = querylist->next; ctl; ctl = ctl->next)
- optmerge(ctl, querylist, FALSE);
- querylist = querylist->next;
- }
- /* don't allow a defaults record after the first */
- for (ctl = querylist; ctl; ctl = ctl->next)
- if (ctl != querylist && strcmp(ctl->server.pollname, "defaults") == 0)
- exit(PS_SYNTAX);
- /* use localhost if we never fetch the FQDN of this host */
- fetchmailhost = "localhost";
- /* merge in wired defaults, do sanity checks and prepare internal fields */
- for (ctl = querylist; ctl; ctl = ctl->next)
- {
- ctl->wedged = FALSE;
- if (configdump || (ctl->active && !(implicitmode && ctl->server.skip)))
- {
- /* merge in defaults */
- optmerge(ctl, &def_opts, FALSE);
- /* force command-line options */
- optmerge(ctl, &cmd_opts, TRUE);
- /* this code enables flags to be turned off */
- #define DEFAULT(flag, dflt) if (flag == FLAG_TRUE)
- flag = TRUE;
- else if (flag == FLAG_FALSE)
- flag = FALSE;
- else
- flag = (dflt)
- DEFAULT(ctl->keep, FALSE);
- DEFAULT(ctl->fetchall, FALSE);
- DEFAULT(ctl->flush, FALSE);
- DEFAULT(ctl->rewrite, TRUE);
- DEFAULT(ctl->stripcr, (ctl->mda != (char *)NULL));
- DEFAULT(ctl->forcecr, FALSE);
- DEFAULT(ctl->pass8bits, FALSE);
- DEFAULT(ctl->dropstatus, FALSE);
- DEFAULT(ctl->mimedecode, FALSE);
- DEFAULT(ctl->server.dns, TRUE);
- DEFAULT(ctl->server.uidl, FALSE);
- #ifdef SSL_ENABLE
- DEFAULT(ctl->use_ssl, FALSE);
- #endif
- DEFAULT(ctl->server.checkalias, FALSE);
- #undef DEFAULT
- /*
- * DNS support is required for some protocols. We used to
- * do this unconditionally, but it made fetchmail excessively
- * vulnerable to misconfigured DNS setups.
- *
- * If we're using ETRN, the smtp hunt list is the list of
- * systems we're polling on behalf of; these have to be
- * fully-qualified domain names. The default for this list
- * should be the FQDN of localhost.
- *
- * If we're using Kerberos for authentication, we need
- * the FQDN in order to generate capability keys.
- */
- if (ctl->server.protocol == P_ETRN
- || ctl->server.preauthenticate == A_KERBEROS_V4
- || ctl->server.preauthenticate == A_KERBEROS_V5)
- if (strcmp(fetchmailhost, "localhost") == 0)
- fetchmailhost = host_fqdn();
- /*
- * Make sure we have a nonempty host list to forward to.
- */
- if (!ctl->smtphunt)
- save_str(&ctl->smtphunt, fetchmailhost, FALSE);
- /* if `user' doesn't name a real local user, try to run as root */
- if ((pw = getpwnam(user)) == (struct passwd *)NULL)
- ctl->uid = 0;
- else
- ctl->uid = pw->pw_uid; /* for local delivery via MDA */
- if (!ctl->localnames) /* for local delivery via SMTP */
- save_str_pair(&ctl->localnames, user, NULL);
- #if !defined(HAVE_GETHOSTBYNAME) || !defined(HAVE_RES_SEARCH)
- /* can't handle multidrop mailboxes unless we can do DNS lookups */
- if (ctl->localnames && ctl->localnames->next && ctl->server.dns)
- {
- ctl->server.dns = FALSE;
- report(stderr, _("fetchmail: warning: no DNS available to check multidrop fetches from %sn"), ctl->server.pollname);
- }
- #endif /* !HAVE_GETHOSTBYNAME || !HAVE_RES_SEARCH */
- /*
- *
- * Compute the true name of the mailserver host.
- * There are two clashing cases here:
- *
- * (1) The poll name is a label, possibly on one of several
- * poll configurations for the same host. In this case
- * the `via' option will be present and give the true name.
- *
- * (2) The poll name is the true one, the via name is
- * localhost. This is going to be typical for ssh-using
- * configurations.
- *
- * We're going to assume the via name is true unless it's
- * localhost.
- */
- if (ctl->server.via && strcmp(ctl->server.via, "localhost"))
- ctl->server.queryname = xstrdup(ctl->server.via);
- else
- ctl->server.queryname = xstrdup(ctl->server.pollname);
- #ifdef HESIOD
- /* If either the pollname or vianame are "hesiod" we want to
- lookup the user's hesiod pobox host */
- if (!strcasecmp(ctl->server.queryname, "hesiod")) {
- struct hes_postoffice *hes_p;
- hes_p = hes_getmailhost(ctl->remotename);
- if (hes_p != NULL && strcmp(hes_p->po_type, "POP") == 0) {
- free(ctl->server.queryname);
- ctl->server.queryname = xstrdup(hes_p->po_host);
- if (ctl->server.via)
- free(ctl->server.via);
- ctl->server.via = xstrdup(hes_p->po_host);
- } else {
- report(stderr,
- _("couldn't find HESIOD pobox for %sn"),
- ctl->remotename);
- }
- }
- #endif /* HESIOD */
- /*
- * We may have to canonicalize the server truename for later use.
- * Do this just once for each lead server, if necessary, in order
- * to minimize DNS round trips.
- */
- if (ctl->server.lead_server)
- {
- char *leadname = ctl->server.lead_server->truename;
- /* prevent core dump from ill-formed or duplicate entry */
- if (!leadname)
- {
- report(stderr,
- _("Lead server has no name.n"));
- exit(PS_SYNTAX);
- }
- ctl->server.truename = xstrdup(leadname);
- }
- #ifdef HAVE_GETHOSTBYNAME
- else if (ctl->server.preauthenticate==A_KERBEROS_V4 ||
- ctl->server.preauthenticate==A_KERBEROS_V5 ||
- (ctl->server.dns && MULTIDROP(ctl)))
- {
- struct hostent *namerec;
- /* compute the canonical name of the host */
- errno = 0;
- namerec = gethostbyname(ctl->server.queryname);
- if (namerec == (struct hostent *)NULL)
- {
- report(stderr,
- _("couldn't find canonical DNS name of %sn"),
- ctl->server.pollname);
- exit(PS_DNS);
- }
- else
- ctl->server.truename=xstrdup((char *)namerec->h_name);
- }
- #endif /* HAVE_GETHOSTBYNAME */
- else
- ctl->server.truename = xstrdup(ctl->server.queryname);
- /* if no folders were specified, set up the null one as default */
- if (!ctl->mailboxes)
- save_str(&ctl->mailboxes, (char *)NULL, 0);
- /* maybe user overrode timeout on command line? */
- if (ctl->server.timeout == -1)
- ctl->server.timeout = CLIENT_TIMEOUT;
- #if !INET6_ENABLE
- /* sanity checks */
- if (ctl->server.port < 0)
- {
- (void) fprintf(stderr,
- _("%s configuration invalid, port number cannot be negativen"),
- ctl->server.pollname);
- exit(PS_SYNTAX);
- }
- if (ctl->server.protocol == P_RPOP && ctl->server.port >= 1024)
- {
- (void) fprintf(stderr,
- _("%s configuration invalid, RPOP requires a privileged portn"),
- ctl->server.pollname);
- exit(PS_SYNTAX);
- }
- if (ctl->listener == LMTP_MODE)
- {
- struct idlist *idp;
- for (idp = ctl->smtphunt; idp; idp = idp->next)
- {
- char *cp;
- if (!(cp = strrchr(idp->id, '/')) ||
- (atoi(++cp) == SMTP_PORT))
- {
- (void) fprintf(stderr,
- _("%s configuration invalid, LMTP can't use default SMTP portn"),
- ctl->server.pollname);
- exit(PS_SYNTAX);
- }
- }
- }
- #endif /* !INET6_ENABLE */
- /*
- * "I beg to you, have mercy on the week minds like myself."
- * wrote Pehr Anderson. Your petition is granted.
- */
- if (ctl->fetchall && ctl->keep && run.poll_interval && !nodetach)
- {
- (void) fprintf(stderr,
- _("Both fetchall and keep on in daemon mode is a mistake!n"));
- exit(PS_SYNTAX);
- }
- }
- }
- /* here's where we override globals */
- if (cmd_run.logfile)
- run.logfile = cmd_run.logfile;
- if (cmd_run.idfile)
- run.idfile = cmd_run.idfile;
- if (cmd_run.poll_interval >= 0)
- run.poll_interval = cmd_run.poll_interval;
- if (cmd_run.invisible)
- run.invisible = cmd_run.invisible;
- if (cmd_run.use_syslog)
- run.use_syslog = (cmd_run.use_syslog == FLAG_TRUE);
- if (cmd_run.postmaster)
- run.postmaster = cmd_run.postmaster;
- if (cmd_run.bouncemail)
- run.bouncemail = cmd_run.bouncemail;
- /* check and daemon options are not compatible */
- if (check_only && run.poll_interval)
- run.poll_interval = 0;
- #ifdef POP3_ENABLE
- /* initialize UID handling */
- if (!versioninfo && (st = prc_filecheck(run.idfile, !versioninfo)) != 0)
- exit(st);
- else
- initialize_saved_lists(querylist, run.idfile);
- #endif /* POP3_ENABLE */
- /*
- * If the user didn't set a last-resort user to get misaddressed
- * multidrop mail, set an appropriate default here.
- */
- if (!run.postmaster)
- {
- if (getuid()) /* ordinary user */
- run.postmaster = user;
- else /* root */
- run.postmaster = "postmaster";
- }
- return(implicitmode);
- }
- static void terminate_poll(int sig)
- /* to be executed at the nd of a poll cycle */
- {
- /*
- * Close all SMTP delivery sockets. For optimum performance
- * we'd like to hold them open til end of run, but (1) this
- * loses if our poll interval is longer than the MTA's inactivity
- * timeout, and (2) some MTAs (like smail) don't deliver after
- * each message, but rather queue up mail and wait to actually
- * deliver it until the input socket is closed.
- *
- * Sending SMTP QUIT on signal is theoretically nice, but led to a
- * subtle bug. If fetchmail was terminated by signal while it was
- * shipping message text, it would hang forever waiting for a
- * command acknowledge. In theory we could enable the QUIT
- * only outside of the message send. In practice, we don't
- * care. All mailservers hang up on a dropped TCP/IP connection
- * anyway.
- */
- if (sig != 0)
- report(stdout, _("terminated with signal %dn"), sig);
- else
- {
- struct query *ctl;
- /* terminate all SMTP connections cleanly */
- for (ctl = querylist; ctl; ctl = ctl->next)
- if (ctl->smtp_socket != -1)
- {
- SMTP_quit(ctl->smtp_socket);
- SockClose(ctl->smtp_socket);
- ctl->smtp_socket = -1;
- }
- }
- #ifdef POP3_ENABLE
- /*
- * Update UID information at end of each poll, rather than at end
- * of run, because that way we don't lose all UIDL information since
- * the beginning of time if fetchmail crashes.
- */
- if (!check_only)
- write_saved_lists(querylist, run.idfile);
- #endif /* POP3_ENABLE */
- }
- static void terminate_run(int sig)
- /* to be executed on normal or signal-induced termination */
- {
- struct query *ctl;
- terminate_poll(sig);
- /*
- * Craig Metz, the RFC1938 one-time-password guy, points out:
- * "Remember that most kernels don't zero pages before handing them to the
- * next process and many kernels share pages between user and kernel space.
- * You'd be very surprised what you can find from a short program to do a
- * malloc() and then dump the contents of the pages you got. By zeroing
- * the secrets at end of run (earlier if you can), you make sure the next
- * guy can't get the password/pass phrase."
- *
- * Right you are, Craig!
- */
- for (ctl = querylist; ctl; ctl = ctl->next)
- if (ctl->password)
- memset(ctl->password, ' ', strlen(ctl->password));
- #if !defined(HAVE_ATEXIT) && !defined(HAVE_ON_EXIT)
- unlockit();
- #endif
- exit(successes ? PS_SUCCESS : querystatus);
- }
- /*
- * Sequence of protocols to try when autoprobing, most capable to least.
- */
- static const int autoprobe[] =
- {
- #ifdef IMAP_ENABLE
- P_IMAP,
- #endif /* IMAP_ENABLE */
- #ifdef POP3_ENABLE
- P_POP3,
- #endif /* POP3_ENABLE */
- #ifdef POP2_ENABLE
- P_POP2
- #endif /* POP2_ENABLE */
- };
- static int query_host(struct query *ctl)
- /* perform fetch transaction with single host */
- {
- int i, st;
- /*
- * If we're syslogging the progress messages are automatically timestamped.
- * Force timestamping if we're going to a logfile.
- */
- if (outlevel >= O_VERBOSE || (run.logfile && outlevel > O_SILENT))
- {
- report(stdout, _("%s querying %s (protocol %s) at %sn"),
- VERSION,
- ctl->server.pollname,
- showproto(ctl->server.protocol),
- rfc822timestamp());
- }
- switch (ctl->server.protocol) {
- case P_AUTO:
- for (i = 0; i < sizeof(autoprobe)/sizeof(autoprobe[0]); i++)
- {
- ctl->server.protocol = autoprobe[i];
- if ((st = query_host(ctl)) == PS_SUCCESS || st == PS_NOMAIL || st == PS_AUTHFAIL || st == PS_LOCKBUSY || st == PS_SMTP)
- break;
- }
- ctl->server.protocol = P_AUTO;
- return(st);
- case P_POP2:
- #ifdef POP2_ENABLE
- return(doPOP2(ctl));
- #else
- report(stderr, _("POP2 support is not configured.n"));
- return(PS_PROTOCOL);
- #endif /* POP2_ENABLE */
- break;
- case P_POP3:
- case P_APOP:
- case P_RPOP:
- #ifdef POP3_ENABLE
- return(doPOP3(ctl));
- #else
- report(stderr, _("POP3 support is not configured.n"));
- return(PS_PROTOCOL);
- #endif /* POP3_ENABLE */
- break;
- case P_IMAP:
- case P_IMAP_K4:
- case P_IMAP_CRAM_MD5:
- case P_IMAP_LOGIN:
- #ifdef GSSAPI
- case P_IMAP_GSS:
- #endif /* GSSAPI */
- #ifdef IMAP_ENABLE
- return(doIMAP(ctl));
- #else
- report(stderr, _("IMAP support is not configured.n"));
- return(PS_PROTOCOL);
- #endif /* IMAP_ENABLE */
- case P_ETRN:
- #ifndef ETRN_ENABLE
- report(stderr, _("ETRN support is not configured.n"));
- return(PS_PROTOCOL);
- #else
- #ifdef HAVE_GETHOSTBYNAME
- return(doETRN(ctl));
- #else
- report(stderr, _("Cannot support ETRN without gethostbyname(2).n"));
- return(PS_PROTOCOL);
- #endif /* HAVE_GETHOSTBYNAME */
- #endif /* ETRN_ENABLE */
- default:
- report(stderr, _("unsupported protocol selected.n"));
- return(PS_PROTOCOL);
- }
- }
- static void dump_params (struct runctl *runp,
- struct query *querylist, flag implicit)
- /* display query parameters in English */
- {
- struct query *ctl;
- if (runp->poll_interval)
- printf(_("Poll interval is %d secondsn"), runp->poll_interval);
- if (runp->logfile)
- printf(_("Logfile is %sn"), runp->logfile);
- if (strcmp(runp->idfile, IDFILE_NAME))
- printf(_("Idfile is %sn"), runp->idfile);
- #if defined(HAVE_SYSLOG)
- if (runp->use_syslog)
- printf(_("Progress messages will be logged via syslogn"));
- #endif
- if (runp->invisible)
- printf(_("Fetchmail will masquerade and will not generate Receivedn"));
- if (runp->postmaster)
- printf(_("Fetchmail will forward misaddressed multidrop messages to %s.n"),
- runp->postmaster);
- if (!runp->bouncemail)
- printf(_("Fetchmail will direct error mail to the postmaster.n"));
- else if (outlevel >= O_VERBOSE)
- printf(_("Fetchmail will direct error mail to the sender.n"));
- for (ctl = querylist; ctl; ctl = ctl->next)
- {
- if (!ctl->active || (implicit && ctl->server.skip))
- continue;
- printf(_("Options for retrieving from %s@%s:n"),
- ctl->remotename, visbuf(ctl->server.pollname));
- if (ctl->server.via && (ctl->server.protocol != P_ETRN))
- printf(_(" Mail will be retrieved via %sn"), ctl->server.via);
- if (ctl->server.interval)
- printf(_(" Poll of this server will occur every %d intervals.n"),
- ctl->server.interval);
- if (ctl->server.truename)
- printf(_(" True name of server is %s.n"), ctl->server.truename);
- if (ctl->server.skip || outlevel >= O_VERBOSE)
- printf(_(" This host %s be queried when no host is specified.n"),
- ctl->server.skip ? _("will not") : _("will"));
- /*
- * Don't poll for password when there is one or when using the ETRN
- * or IMAP-GSS protocol
- */
- /* ETRN, IMAP_GSS, and IMAP_K4 do not need a password, so skip this */
- if ( (ctl->server.protocol != P_ETRN)
- #ifdef GSSAPI
- && (ctl->server.protocol != P_IMAP_GSS)
- #endif /* GSSAPI */
- && (ctl->server.protocol != P_IMAP_K4) ) {
- if (!ctl->password)
- printf(_(" Password will be prompted for.n"));
- else if (outlevel >= O_VERBOSE)
- {
- if (ctl->server.protocol == P_APOP)
- printf(_(" APOP secret = "%s".n"),
- visbuf(ctl->password));
- else if (ctl->server.protocol == P_RPOP)
- printf(_(" RPOP id = "%s".n"),
- visbuf(ctl->password));
- else
- printf(_(" Password = "%s".n"),
- visbuf(ctl->password));
- }
- }
- if (ctl->server.protocol == P_POP3
- #if INET6_ENABLE
- && !strcmp(ctl->server.service, KPOP_PORT)
- #else /* INET6_ENABLE */
- && ctl->server.port == KPOP_PORT
- #endif /* INET6_ENABLE */
- && (ctl->server.preauthenticate == A_KERBEROS_V4 ||
- ctl->server.preauthenticate == A_KERBEROS_V5))
- printf(_(" Protocol is KPOP with Kerberos %s authentication"),
- ctl->server.preauthenticate == A_KERBEROS_V5 ? "V" : "IV");
- else
- printf(_(" Protocol is %s"), showproto(ctl->server.protocol));
- #if INET6_ENABLE
- if (ctl->server.service)
- printf(_(" (using service %s)"), ctl->server.service);
- if (ctl->server.netsec)
- printf(_(" (using network security options %s)"), ctl->server.netsec);
- #else /* INET6_ENABLE */
- if (ctl->server.port)
- printf(_(" (using port %d)"), ctl->server.port);
- #endif /* INET6_ENABLE */
- else if (outlevel >= O_VERBOSE)
- printf(_(" (using default port)"));
- if (ctl->server.uidl && (ctl->server.protocol != P_ETRN))
- printf(_(" (forcing UIDL use)"));
- putchar('.');
- putchar('n');
- if (ctl->server.preauthenticate == A_KERBEROS_V4)
- printf(_(" Kerberos V4 preauthentication enabled.n"));
- else if (ctl->server.preauthenticate == A_KERBEROS_V5)
- printf(_(" Kerberos V5 preauthentication enabled.n"));
- else if (ctl->server.preauthenticate == A_SSH)
- printf(_(" End-to-end encryption assumed.n"));
- #ifdef SSL_ENABLE
- if (ctl->use_ssl)
- printf(" SSL encrypted sessions enabled.n");
- #endif
- if (ctl->server.timeout > 0)
- printf(_(" Server nonresponse timeout is %d seconds"), ctl->server.timeout);
- if (ctl->server.timeout == CLIENT_TIMEOUT)
- printf(_(" (default).n"));
- else
- printf(".n");
- if (ctl->server.protocol != P_ETRN) {
- if (!ctl->mailboxes->id)
- printf(_(" Default mailbox selected.n"));
- else
- {
- struct idlist *idp;
- printf(_(" Selected mailboxes are:"));
- for (idp = ctl->mailboxes; idp; idp = idp->next)
- printf(" %s", idp->id);
- printf("n");
- }
- printf(_(" %s messages will be retrieved (--all %s).n"),
- ctl->fetchall ? _("All") : _("Only new"),
- ctl->fetchall ? "on" : "off");
- printf(_(" Fetched messages %s be kept on the server (--keep %s).n"),
- ctl->keep ? _("will") : _("will not"),
- ctl->keep ? "on" : "off");
- printf(_(" Old messages %s be flushed before message retrieval (--flush %s).n"),
- ctl->flush ? _("will") : _("will not"),
- ctl->flush ? "on" : "off");
- printf(_(" Rewrite of server-local addresses is %s (--norewrite %s).n"),
- ctl->rewrite ? _("enabled") : _("disabled"),
- ctl->rewrite ? "off" : "on");
- printf(_(" Carriage-return stripping is %s (stripcr %s).n"),
- ctl->stripcr ? _("enabled") : _("disabled"),
- ctl->stripcr ? "on" : "off");
- printf(_(" Carriage-return forcing is %s (forcecr %s).n"),
- ctl->forcecr ? _("enabled") : _("disabled"),
- ctl->forcecr ? "on" : "off");
- printf(_(" Interpretation of Content-Transfer-Encoding is %s (pass8bits %s).n"),
- ctl->pass8bits ? _("disabled") : _("enabled"),
- ctl->pass8bits ? "on" : "off");
- printf(_(" MIME decoding is %s (mimedecode %s).n"),
- ctl->mimedecode ? _("enabled") : _("disabled"),
- ctl->mimedecode ? "on" : "off");
- printf(_(" Nonempty Status lines will be %s (dropstatus %s)n"),
- ctl->dropstatus ? _("discarded") : _("kept"),
- ctl->dropstatus ? "on" : "off");
- if (NUM_NONZERO(ctl->limit))
- {
- if (NUM_NONZERO(ctl->limit))
- printf(_(" Message size limit is %d octets (--limit %d).n"),
- ctl->limit, ctl->limit);
- else if (outlevel >= O_VERBOSE)
- printf(_(" No message size limit (--limit 0).n"));
- if (run.poll_interval > 0)
- printf(_(" Message size warning interval is %d seconds (--warnings %d).n"),
- ctl->warnings, ctl->warnings);
- else if (outlevel >= O_VERBOSE)
- printf(_(" Size warnings on every poll (--warnings 0).n"));
- }
- if (NUM_NONZERO(ctl->fetchlimit))
- printf(_(" Received-message limit is %d (--fetchlimit %d).n"),
- ctl->fetchlimit, ctl->fetchlimit);
- else if (outlevel >= O_VERBOSE)
- printf(_(" No received-message limit (--fetchlimit 0).n"));
- if (NUM_NONZERO(ctl->batchlimit))
- printf(_(" SMTP message batch limit is %d.n"), ctl->batchlimit);
- else if (outlevel >= O_VERBOSE)
- printf(_(" No SMTP message batch limit (--batchlimit 0).n"));
- if (ctl->server.protocol == P_IMAP)
- {
- if (NUM_NONZERO(ctl->expunge))
- printf(_(" Deletion interval between expunges forced to %d (--expunge %d).n"), ctl->expunge, ctl->expunge);
- else if (outlevel >= O_VERBOSE)
- printf(_(" No forced expunges (--expunge 0).n"));
- }
- }
- if (ctl->bsmtp)
- printf(_(" Messages will be appended to %s as BSMTPn"), visbuf(ctl->bsmtp));
- else if (ctl->mda && (ctl->server.protocol != P_ETRN))
- printf(_(" Messages will be delivered with "%s".n"), visbuf(ctl->mda));
- else
- {
- struct idlist *idp;
- printf(_(" Messages will be %cMTP-forwarded to:"), ctl->listener);
- for (idp = ctl->smtphunt; idp; idp = idp->next)
- {
- printf(" %s", idp->id);
- if (!idp->val.status.mark)
- printf(_(" (default)"));
- }
- printf("n");
- if (ctl->smtpaddress)
- printf(_(" Host part of MAIL FROM line will be %sn"),
- ctl->smtpaddress);
- }
- if (ctl->server.protocol != P_ETRN)
- {
- if (ctl->antispam != (struct idlist *)NULL)
- {
- struct idlist *idp;
- printf(_(" Recognized listener spam block responses are:"));
- for (idp = ctl->antispam; idp; idp = idp->next)
- printf(" %d", idp->val.status.num);
- printf("n");
- }
- else if (outlevel >= O_VERBOSE)
- printf(_(" Spam-blocking disabledn"));
- }
- if (ctl->preconnect)
- printf(_(" Server connection will be brought up with "%s".n"),
- visbuf(ctl->preconnect));
- else if (outlevel >= O_VERBOSE)
- printf(_(" No pre-connection command.n"));
- if (ctl->postconnect)
- printf(_(" Server connection will be taken down with "%s".n"),
- visbuf(ctl->postconnect));
- else if (outlevel >= O_VERBOSE)
- printf(_(" No post-connection command.n"));
- if (ctl->server.protocol != P_ETRN) {
- if (!ctl->localnames)
- printf(_(" No localnames declared for this host.n"));
- else
- {
- struct idlist *idp;
- int count = 0;
- for (idp = ctl->localnames; idp; idp = idp->next)
- ++count;
- if (count > 1 || ctl->wildcard)
- printf(_(" Multi-drop mode: "));
- else
- printf(_(" Single-drop mode: "));
- printf(_("%d local name(s) recognized.n"), count);
- if (outlevel >= O_VERBOSE)
- {
- for (idp = ctl->localnames; idp; idp = idp->next)
- if (idp->val.id2)
- printf("t%s -> %sn", idp->id, idp->val.id2);
- else
- printf("t%sn", idp->id);
- if (ctl->wildcard)
- fputs("t*n", stdout);
- }
- if (count > 1 || ctl->wildcard)
- {
- printf(_(" DNS lookup for multidrop addresses is %s.n"),
- ctl->server.dns ? _("enabled") : _("disabled"));
- if (ctl->server.dns)
- {
- printf(_(" Server aliases will be compared with multidrop addresses by "));
- if (ctl->server.checkalias)
- printf(_("IP address.n"));
- else
- printf(_("name.n"));
- }
- if (ctl->server.envelope == STRING_DISABLED)
- printf(_(" Envelope-address routing is disabledn"));
- else
- {
- printf(_(" Envelope header is assumed to be: %sn"),
- ctl->server.envelope ? ctl->server.envelope:_("Received"));
- if (ctl->server.envskip > 1 || outlevel >= O_VERBOSE)
- printf(_(" Number of envelope header to be parsed: %dn"),
- ctl->server.envskip);
- if (ctl->server.qvirtual)
- printf(_(" Prefix %s will be removed from user idn"),
- ctl->server.qvirtual);
- else if (outlevel >= O_VERBOSE)
- printf(_(" No prefix strippingn"));
- }
- if (ctl->server.akalist)
- {
- struct idlist *idp;
- printf(_(" Predeclared mailserver aliases:"));
- for (idp = ctl->server.akalist; idp; idp = idp->next)
- printf(" %s", idp->id);
- putchar('n');
- }
- if (ctl->server.localdomains)
- {
- struct idlist *idp;
- printf(_(" Local domains:"));
- for (idp = ctl->server.localdomains; idp; idp = idp->next)
- printf(" %s", idp->id);
- putchar('n');
- }
- }
- }
- }
- #if defined(linux) || defined(__FreeBSD__)
- if (ctl->server.interface)
- printf(_(" Connection must be through interface %s.n"), ctl->server.interface);
- else if (outlevel >= O_VERBOSE)
- printf(_(" No interface requirement specified.n"));
- if (ctl->server.monitor)
- printf(_(" Polling loop will monitor %s.n"), ctl->server.monitor);
- else if (outlevel >= O_VERBOSE)
- printf(_(" No monitor interface specified.n"));
- #endif
- if (ctl->server.plugin)
- printf(_(" Server connections will be mode via plugin %s (--plugin %s).n"), ctl->server.plugin, ctl->server.plugin);
- else if (outlevel >= O_VERBOSE)
- printf(_(" No plugin command specified.n"));
- if (ctl->server.plugout)
- printf(_(" Listener connections will be mode via plugout %s (--plugout %s).n"), ctl->server.plugout, ctl->server.plugout);
- else if (outlevel >= O_VERBOSE)
- printf(_(" No plugout command specified.n"));
- if (ctl->server.protocol > P_POP2 && (ctl->server.protocol != P_ETRN))
- {
- if (!ctl->oldsaved)
- printf(_(" No UIDs saved from this host.n"));
- else
- {
- struct idlist *idp;
- int count = 0;
- for (idp = ctl->oldsaved; idp; idp = idp->next)
- ++count;
- printf(_(" %d UIDs saved.n"), count);
- if (outlevel >= O_VERBOSE)
- for (idp = ctl->oldsaved; idp; idp = idp->next)
- printf("t%sn", idp->id);
- }
- }
- if (ctl->properties)
- printf(_(" Pass-through properties "%s".n"),
- visbuf(ctl->properties));
- }
- }
- /* fetchmail.c ends here */