#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
#ifdef HAVE_SYS_WAIT_H
#include <sys/wait.h>
#endif
#ifdef HAVE_GETHOSTBYNAME
#include <netdb.h>
#endif
#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
#endif
static int load_params(int, char **, int);
static void dump_params (struct runctl *runp, struct query *, flag implicit);
static int query_host(struct query *);
int outlevel;
struct runctl run;
flag nodetach;
flag quitmode;
flag check_only;
flag versioninfo;
char *user;
char *home;
char *program_name;
flag configdump;
const char *fetchmailhost;
volatile int lastsig;
#if NET_SECURITY
void *request = NULL;
int requestlen = 0;
#endif
static char *lockfile;
static int querystatus;
static int successes;
static struct runctl cmd_run;
static void termhook(int);
#if 0
#define SLEEP_WITH_ALARM
#endif
#ifdef SLEEP_WITH_ALARM
#if defined(STDC_HEADERS)
static sig_atomic_t alarm_latch = FALSE;
#else
static int alarm_latch = FALSE;
#endif
RETSIGTYPE gotsigalrm(sig)
int sig;
{
signal(sig, gotsigalrm);
lastsig = sig;
alarm_latch = TRUE;
}
#endif
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
{
unlink(lockfile);
}
#ifdef __EMX__
int itimerflag;
void itimerthread(void* dummy) {
if (outlevel >= O_VERBOSE)
fprintf(stderr, _("fetchmail: thread sleeping for %d sec.\n"), poll_interval);
while(1) {
_sleep2(poll_interval*1000);
kill((getpid()), SIGALRM);
}
}
#endif
#ifdef __FreeBSD__
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
#define IDFILE_NAME ".fetchids"
run.idfile = (char *) xmalloc(strlen(home)+strlen(IDFILE_NAME)+2);
strcpy(run.idfile, home);
strcat(run.idfile, "/");
strcat(run.idfile, IDFILE_NAME);
outlevel = O_NORMAL;
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
#ifndef POP3_ENABLE
printf("-POP3");
#endif
#ifndef IMAP_ENABLE
printf("-IMAP");
#endif
#ifdef GSSAPI
printf("+IMAP-GSS");
#endif
#ifdef RPA_ENABLE
printf("+RPA");
#endif
#ifdef NTLM_ENABLE
printf("+NTLM");
#endif
#ifdef SDPS_ENABLE
printf("+SDPS");
#endif
#ifndef ETRN_ENABLE
printf("-ETRN");
#endif
#if OPIE
printf("+OPIE");
#endif
#if INET6
printf("+INET6");
#endif
#if NET_SECURITY
printf("+NETSEC");
#endif
#ifdef HAVE_SOCKS
#if HAVE_SOCKS
printf("+SOCKS");
#endif
#endif
#if ENABLE_NLS
printf("+NLS");
#endif
putchar('\n');
system("uname -a");
}
if (!(quitmode && argc == 2))
implicitmode = load_params(argc, argv, optind);
#define FETCHMAIL_PIDFILE "fetchmail.pid"
if (!getuid()) {
xalloca(tmpbuf, char *,
strlen(PID_DIR) + strlen(FETCHMAIL_PIDFILE) + 2);
sprintf(tmpbuf, "%s/%s", PID_DIR, FETCHMAIL_PIDFILE);
} else {
xalloca(tmpbuf, char *, strlen(home) + strlen(FETCHMAIL_PIDFILE) + 3);
strcpy(tmpbuf, home);
strcat(tmpbuf, "/.");
strcat(tmpbuf, FETCHMAIL_PIDFILE);
}
#undef FETCHMAIL_PIDFILE
#ifdef HAVE_SETRLIMIT
if (outlevel < O_VERBOSE || run.poll_interval > 0)
{
struct rlimit corelimit;
corelimit.rlim_cur = 0;
corelimit.rlim_max = 0;
setrlimit(RLIMIT_CORE, &corelimit);
}
#endif
#define NETRC_FILE ".netrc"
xalloca(netrc_file, char *, strlen (home) + strlen(NETRC_FILE) + 2);
strcpy (netrc_file, home);
strcat (netrc_file, "/");
strcat (netrc_file, NETRC_FILE);
netrc_list = parse_netrc(netrc_file);
#undef NETRC_FILE
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 ||
#ifdef GSSAPI
ctl->server.protocol == P_IMAP_GSS ||
#endif
ctl->server.protocol == P_IMAP_K4)
ctl->password = ctl->remotename;
else
{
netrc_entry *p;
p = search_netrc(netrc_list,
ctl->server.pollname, ctl->remotename);
if (p && p->password)
ctl->password = xstrdup(p->password);
else if (ctl->server.via)
{
p = search_netrc(netrc_list,
ctl->server.via, ctl->remotename);
if (p && p->password)
ctl->password = xstrdup(p->password);
}
}
}
}
if (versioninfo)
{
printf(_("Taking options from command line"));
if (access(rcfile, 0))
printf("\n");
else
printf(_(" and %s\n"), rcfile);
if (outlevel >= O_VERBOSE)
printf(_("Lockfile at %s\n"), tmpbuf);
if (querylist == NULL)
(void) fprintf(stderr,
_("No mailservers set up -- perhaps %s is missing?\n"), rcfile);
else
dump_params(&run, querylist, implicitmode);
exit(0);
}
if (configdump)
{
dump_config(&run, querylist);
exit(0);
}
pid = -1;
if ((lockfile = (char *) malloc(strlen(tmpbuf) + 1)) == NULL)
{
fprintf(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 lockfile\n"));
pid = -1;
bkgd = FALSE;
unlink(lockfile);
}
fclose(lockfp);
}
if (!(quitmode && argc == 2) && pid == -1 && querylist == NULL) {
(void)fputs(_("fetchmail: no mailservers have been specified.\n"),stderr);
exit(PS_SYNTAX);
}
if (quitmode)
{
if (pid == -1)
{
fprintf(stderr,_("fetchmail: no other fetchmail is running\n"));
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;
}
}
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)
{
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
{
fprintf(stderr,
_("fetchmail: elder sibling at %d died mysteriously.\n"),
pid);
return(PS_UNDEFINED);
}
}
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
&& !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));
}
}
#ifdef HAVE_SOCKS
#if HAVE_SOCKS
SOCKSinit("fetchmail");
#endif
#endif
#if defined(HAVE_SYSLOG)
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);
if (run.poll_interval)
{
if (!nodetach)
daemonize(run.logfile, termhook);
report(stdout, _("starting fetchmail %s daemon \n"), VERSION);
signal(SIGUSR1, SIG_IGN);
if (run.poll_interval && !getuid())
signal(SIGHUP, SIG_IGN);
}
#ifdef linux
interface_init();
#endif
umask(0077);
signal(SIGABRT, termhook);
signal(SIGINT, termhook);
signal(SIGTERM, termhook);
signal(SIGALRM, termhook);
signal(SIGPIPE, termhook);
signal(SIGQUIT, termhook);
if ((st = open(lockfile, O_WRONLY | O_CREAT | O_EXCL, 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);
#ifdef HAVE_ATEXIT
atexit(unlockit);
#endif
#ifdef HAVE_ON_EXIT
on_exit(unlockit, (char *)NULL);
#endif
}
do {
#if defined(HAVE_RES_SEARCH) && defined(USE_TCPIP_FOR_DNS)
sethostent(TRUE);
#endif
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;
}
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 %s\n"),
ctl->server.pollname);
continue;
}
}
#if (defined(linux) && !INET6) || defined(__FreeBSD__)
if (!interface_approve(&ctl->server))
continue;
#endif
querystatus = query_host(ctl);
if (querystatus == PS_SUCCESS)
{
successes++;
#ifdef POP3_ENABLE
if (!check_only)
update_str_lists(ctl);
if (!check_only)
{
write_saved_lists(querylist, run.idfile);
if (outlevel >= O_DEBUG)
report(stdout, _("saved UID List\n"));
}
#endif
}
else if (!check_only &&
((querystatus!=PS_NOMAIL) || (outlevel==O_DEBUG)))
report(stdout, _("Query status=%d\n"), querystatus);
#if (defined(linux) && !INET6) || defined (__FreeBSD__)
if (ctl->server.monitor)
{
sleep(3);
interface_note_activity(&ctl->server);
}
#endif
}
}
#if defined(HAVE_RES_SEARCH) && defined(USE_TCPIP_FOR_DNS)
endhostent();
#endif
for (ctl = querylist; ctl; ctl = ctl->next)
if (ctl->smtp_socket != -1)
{
SMTP_quit(ctl->smtp_socket);
close(ctl->smtp_socket);
ctl->smtp_socket = -1;
}
if (run.poll_interval)
{
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"));
exit(PS_AUTHFAIL);
}
if (outlevel >= O_VERBOSE)
report(stdout,
_("fetchmail: sleeping at %s\n"), rfc822timestamp());
signal(SIGUSR1, donothing);
if (!getuid())
signal(SIGHUP, donothing);
{
#ifndef __EMX__
#ifdef SLEEP_WITH_ALARM
struct itimerval ntimeout;
ntimeout.it_interval.tv_sec = 5;
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);
setitimer(ITIMER_REAL,&ntimeout,NULL);
if (!alarm_latch)
pause();
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);
signal(SIGALRM, SIG_IGN);
#else
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
alarm_latch = FALSE;
signal(SIGALRM, gotsigalrm);
_beginthread(itimerthread, NULL, 32768, NULL);
if (!alarm_latch)
pause();
signal(SIGALRM, SIG_IGN);
#endif
if (lastsig == SIGUSR1
|| ((run.poll_interval && !getuid()) && lastsig == SIGHUP))
{
#ifdef SYS_SIGLIST_DECLARED
report(stdout,
_("awakened by %s\n"), sys_siglist[lastsig]);
#else
report(stdout,
_("awakened by signal %d\n"), lastsig);
#endif
for (ctl = querylist; ctl; ctl = ctl->next)
ctl->wedged = FALSE;
}
}
signal(SIGUSR1, SIG_IGN);
if (!getuid())
signal(SIGHUP, SIG_IGN);
if (outlevel >= O_VERBOSE)
report(stdout, _("awakened at %s\n"), rfc822timestamp());
}
} while
(run.poll_interval);
if (outlevel >= O_VERBOSE)
report(stdout, _("normal termination, status %d\n"),
successes ? PS_SUCCESS : querystatus);
termhook(0);
exit(successes ? PS_SUCCESS : querystatus);
}
static void optmerge(struct query *h2, struct query *h1, int force)
{
#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
FLAG_MERGE(server.service);
FLAG_MERGE(server.netsec);
#else
FLAG_MERGE(server.port);
#endif
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
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);
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;
run.bouncemail = TRUE;
memset(&def_opts, '\0', 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);
ANTISPAM(550);
ANTISPAM(501);
ANTISPAM(554);
#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;
if ((st = prc_parse_file(rcfile, !versioninfo)) != 0)
exit(st);
if ((implicitmode = (optind >= argc)))
{
for (ctl = querylist; ctl; ctl = ctl->next)
ctl->active = TRUE;
}
else
for (; optind < argc; optind++)
{
flag predeclared = FALSE;
for (ctl = querylist; ctl; ctl = ctl->next)
if (!strcmp(ctl->server.pollname, argv[optind])
|| str_in_list(&ctl->server.akalist, argv[optind], TRUE))
{
if(predeclared)
fprintf(stderr,_("Warning: multiple mentions of host %s in config file\n"),argv[optind]);
ctl->active = TRUE;
predeclared = TRUE;
}
if (!predeclared)
{
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 (querylist && strcmp(querylist->server.pollname, "defaults") == 0)
{
for (ctl = querylist->next; ctl; ctl = ctl->next)
optmerge(ctl, querylist, FALSE);
querylist = querylist->next;
}
for (ctl = querylist; ctl; ctl = ctl->next)
if (ctl != querylist && strcmp(ctl->server.pollname, "defaults") == 0)
exit(PS_SYNTAX);
fetchmailhost = "localhost";
for (ctl = querylist; ctl; ctl = ctl->next)
{
ctl->wedged = FALSE;
if (configdump || (ctl->active && !(implicitmode && ctl->server.skip)))
{
optmerge(ctl, &def_opts, FALSE);
optmerge(ctl, &cmd_opts, TRUE);
#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, TRUE);
DEFAULT(ctl->server.dns, TRUE);
DEFAULT(ctl->server.uidl, FALSE);
DEFAULT(ctl->server.checkalias, FALSE);
#undef DEFAULT
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();
if (!ctl->smtphunt)
save_str(&ctl->smtphunt, fetchmailhost, FALSE);
if ((pw = getpwnam(user)) == (struct passwd *)NULL)
ctl->uid = 0;
else
ctl->uid = pw->pw_uid;
if (!ctl->localnames)
save_str_pair(&ctl->localnames, user, NULL);
#if !defined(HAVE_GETHOSTBYNAME) || !defined(HAVE_RES_SEARCH)
if (ctl->localnames && ctl->localnames->next && ctl->server.dns)
{
ctl->server.dns = FALSE;
fprintf(stderr, _("fetchmail: warning: no DNS available to check multidrop fetches from %s\n"), ctl->server.pollname);
}
#endif
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 (!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 %s\n"),
ctl->remotename);
}
}
#endif
if (ctl->server.lead_server)
{
char *leadname = ctl->server.lead_server->truename;
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;
errno = 0;
namerec = gethostbyname(ctl->server.queryname);
if (namerec == (struct hostent *)NULL)
{
report(stderr,
_("couldn't find canonical DNS name of %s\n"),
ctl->server.pollname);
exit(PS_DNS);
}
else
ctl->server.truename=xstrdup((char *)namerec->h_name);
}
#endif
else
ctl->server.truename = xstrdup(ctl->server.queryname);
if (!ctl->mailboxes)
save_str(&ctl->mailboxes, (char *)NULL, 0);
if (ctl->server.timeout == -1)
ctl->server.timeout = CLIENT_TIMEOUT;
#if !INET6
if (ctl->server.port < 0)
{
(void) fprintf(stderr,
_("%s configuration invalid, port number cannot be negative\n"),
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 port\n"),
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, '/')) ||
#ifdef INET6
(strcmp(++cp, SMTP_PORT) == 0))
#else
(atoi(++cp) == SMTP_PORT))
#endif
{
(void) fprintf(stderr,
_("%s configuration invalid, LMTP can't use default SMTP port\n"),
ctl->server.pollname);
exit(PS_SYNTAX);
}
}
}
#endif
}
}
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;
if (check_only && run.poll_interval)
run.poll_interval = 0;
#ifdef POP3_ENABLE
if (!versioninfo && (st = prc_filecheck(run.idfile, !versioninfo)) != 0)
exit(st);
else
initialize_saved_lists(querylist, run.idfile);
#endif
if (!run.postmaster)
if (getuid())
run.postmaster = user;
else
run.postmaster = "postmaster";
return(implicitmode);
}
static void termhook(int sig)
{
struct query *ctl;
if (sig != 0)
report(stdout, _("terminated with signal %d\n"), sig);
else
for (ctl = querylist; ctl; ctl = ctl->next)
if (ctl->smtp_socket != -1)
SMTP_quit(ctl->smtp_socket);
#ifdef POP3_ENABLE
if (!check_only)
write_saved_lists(querylist, run.idfile);
#endif
for (ctl = querylist; ctl; ctl = ctl->next)
if (ctl->password)
memset(ctl->password, '\0', strlen(ctl->password));
#if !defined(HAVE_ATEXIT) && !defined(HAVE_ON_EXIT)
unlockit();
#endif
exit(successes ? PS_SUCCESS : querystatus);
}
static const int autoprobe[] =
{
#ifdef IMAP_ENABLE
P_IMAP,
#endif
#ifdef POP3_ENABLE
P_POP3,
#endif
#ifdef POP2_ENABLE
P_POP2
#endif
};
static int query_host(struct query *ctl)
{
int i, st;
if (outlevel >= O_VERBOSE || (run.logfile && outlevel > O_SILENT))
{
report(stdout, _("%s querying %s (protocol %s) at %s\n"),
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
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
break;
case P_IMAP:
case P_IMAP_K4:
case P_IMAP_CRAM_MD5:
case P_IMAP_LOGIN:
#ifdef GSSAPI
case P_IMAP_GSS:
#endif
#ifdef IMAP_ENABLE
return(doIMAP(ctl));
#else
report(stderr, _("IMAP support is not configured.\n"));
return(PS_PROTOCOL);
#endif
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
#endif
default:
report(stderr, _("unsupported protocol selected.\n"));
return(PS_PROTOCOL);
}
}
static void dump_params (struct runctl *runp,
struct query *querylist, flag implicit)
{
struct query *ctl;
if (runp->poll_interval)
printf(_("Poll interval is %d seconds\n"), runp->poll_interval);
if (runp->logfile)
printf(_("Logfile is %s\n"), runp->logfile);
if (strcmp(runp->idfile, IDFILE_NAME))
printf(_("Idfile is %s\n"), runp->idfile);
#if defined(HAVE_SYSLOG)
if (runp->use_syslog)
printf(_("Progress messages will be logged via syslog\n"));
#endif
if (runp->invisible)
printf(_("Fetchmail will masquerade and will not generate Received\n"));
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 %s\n"), 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"));
if ( (ctl->server.protocol != P_ETRN)
#ifdef GSSAPI
&& (ctl->server.protocol != P_IMAP_GSS)
#endif
&& (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
&& !strcmp(ctl->server.service, KPOP_PORT)
#else
&& ctl->server.port == KPOP_PORT
#endif
&& (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
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
if (ctl->server.port)
printf(_(" (using port %d)"), ctl->server.port);
#endif
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"));
if (ctl->server.preauthenticate == A_KERBEROS_V5)
printf(_(" Kerberos V5 preauthentication enabled.\n"));
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 BSMTP\n"), 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 %s\n"),
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 disabled\n"));
}
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 -> %s\n", idp->id, idp->val.id2);
else
printf("\t%s\n", 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 disabled\n"));
else
{
printf(_(" Envelope header is assumed to be: %s\n"),
ctl->server.envelope ? ctl->server.envelope:_("Received"));
if (ctl->server.envskip > 1 || outlevel >= O_VERBOSE)
printf(_(" Number of envelope header to be parsed: %d\n"),
ctl->server.envskip);
if (ctl->server.qvirtual)
printf(_(" Prefix %s will be removed from user id\n"),
ctl->server.qvirtual);
else if (outlevel >= O_VERBOSE)
printf(_(" No prefix stripping\n"));
}
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%s\n", idp->id);
}
if (ctl->properties)
printf(_(" Pass-through properties \"%s\".\n"),
visbuf(ctl->properties));
}
}