/*
* 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
#if defined(HAVE_ALLOCA_H)
#include <alloca.h>
#endif
#include <string.h>
#include <signal.h>
#if defined(HAVE_SYSLOG)
#include <syslog.h>
#endif
#include <pwd.h>
#include <errno.h>
#include <sys/time.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/wait.h>
#ifdef HAVE_GETHOSTBYNAME
#include <netdb.h>
#endif /* HAVE_GETHOSTBYNAME */
#include "fetchmail.h"
#include "tunable.h"
#include "smtp.h"
#include "getopt.h"
#include "netrc.h"
#define DROPDEAD 6 /* maximum bad socket opens */
/* prototypes for internal functions */
static int load_params(int, char **, int);
static void dump_params (struct query *);
static int query_host(struct query *);
static char *visbuf(const char *);
/* controls the detail level of status/progress messages written to stderr */
int outlevel; /* see the O_.* constants above */
int yydebug; /* enable parse debugging */
/* daemon mode control */
int poll_interval; /* poll interval in seconds */
int nodetach; /* if TRUE, don't detach daemon process */
char *logfile; /* log file for daemon mode */
int use_syslog; /* if --syslog was set */
int quitmode; /* if --quit was set */
int check_only; /* if --probe was set */
char *cmd_logfile; /* if --logfile was set */
/* miscellaneous global controls */
char *rcfile; /* path name of rc file */
char *idfile; /* UID list file */
int versioninfo; /* emit only version info */
char *user; /* the name of the invoking user */
char *program_name; /* the name to prefix error messages with */
static char *lockfile; /* name of lockfile */
static int querystatus; /* status of query */
static int lastsig; /* last signal received */
static void termhook(); /* forward declaration of exit hook */
RETSIGTYPE donothing(sig) int sig; {signal(sig, donothing); lastsig = sig;}
static void unlockit(void)
/* must-do actions for exit (but we can't count on being able to do malloc) */
{
unlink(lockfile);
}
int main (int argc, char **argv)
{
int st, bkgd = FALSE;
int parsestatus, implicitmode;
char *home, *tmpdir, tmpbuf[BUFSIZ];
struct passwd *pw;
struct query *ctl;
FILE *lockfp;
netrc_entry *netrc_list;
char *netrc_file;
pid_t pid;
if ((program_name = strrchr(argv[0], '/')) != NULL)
++program_name;
else
program_name = argv[0];
if ((user = getenv("USER")) == (char *)NULL)
user = getenv("LOGNAME");
if ((user == (char *)NULL) || (home = getenv("HOME")) == (char *)NULL)
{
if ((pw = getpwuid(getuid())) != NULL)
{
user = pw->pw_name;
home = pw->pw_dir;
}
else
{
fprintf(stderr,"fetchmail: can't find your name and home directory!\n");
exit(PS_UNDEFINED);
}
}
/*
* Backward-compatibility hack. If we're called by the name of the
* ancestral popclient, look for .poprc. This will actually work
* for popclient files that don't use the removed keywords.
*/
if (strcmp("popclient", argv[0]) == 0)
tmpdir = ".poprc";
else
tmpdir = ".fetchmailrc";
rcfile = (char *) xmalloc(strlen(home)+strlen(tmpdir)+2);
strcpy(rcfile, home);
strcat(rcfile, "/");
strcat(rcfile, tmpdir);
#define IDFILE_NAME ".fetchids"
idfile = (char *) xmalloc(strlen(home)+strlen(IDFILE_NAME)+2);
strcpy(idfile, home);
strcat(idfile, "/");
strcat(idfile, IDFILE_NAME);
outlevel = O_NORMAL;
if ((parsestatus = parsecmdline(argc,argv,&cmd_opts)) < 0)
exit(PS_SYNTAX);
/* this hint to stdio should halp messages come out in the right order */
setvbuf(stdout, NULL, _IOLBF, POPBUFSIZE);
if (versioninfo)
printf("This is fetchmail release %s pl %s\n", RELEASE_ID, PATCHLEVEL);
/* avoid parsing the config file if all we're doing is killing a daemon */
if (!quitmode)
implicitmode = load_params(argc, argv, optind);
/* set up to do lock protocol */
if (!getuid())
strcpy(tmpbuf, "/var/run/fetchmail.pid");
else {
strcpy(tmpbuf, home);
strcat(tmpbuf, "/.fetchmail");
}
/* perhaps we just want to check options? */
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);
for (ctl = querylist; ctl; ctl = ctl->next) {
if (ctl->active && !(implicitmode && ctl->server.skip))
dump_params(ctl);
}
if (querylist == NULL)
(void) fprintf(stderr,
"No mailservers set up -- perhaps %s is missing?\n", rcfile);
exit(0);
}
else if (!quitmode && querylist == NULL) {
(void) fputs("fetchmail: no mailservers have been specified.\n", stderr);
exit(PS_SYNTAX);
}
/* check for another fetchmail running concurrently */
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;
remove(lockfile);
}
fclose(lockfp);
}
/* perhaps user asked us to kill the other fetchmail */
if (quitmode)
{
if (pid == -1)
{
fprintf(stderr,"fetchmail: no other fetchmail is running\n");
exit(PS_EXCLUDE);
}
else if (kill(pid, SIGTERM) < 0)
{
fprintf(stderr,"fetchmail: error killing %s fetchmail at %d.\n",
bkgd ? "background" : "foreground", pid);
exit(PS_EXCLUDE);
}
else
{
fprintf(stderr,"fetchmail: %s fetchmail at %d killed.\n",
bkgd ? "background" : "foreground", pid);
remove(lockfile);
exit(0);
}
}
/* 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.");
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 (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);
}
}
/* parse the ~/.netrc file, for future password lookups. */
netrc_file = (char *) xmalloc (strlen (home) + 8);
strcpy (netrc_file, home);
strcat (netrc_file, "/.netrc");
netrc_list = parse_netrc (netrc_file);
/* 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->password)
{
if (ctl->server.authenticate == A_KERBEROS)
/* Server won't care what the password is, but there
must be some non-null string here. */
ctl->password = ctl->remotename;
else
{
/* Look up the host and account in the .netrc file. */
netrc_entry *p = search_netrc(netrc_list,ctl->server.names->id);
while (p && strcmp (p->account, ctl->remotename))
p = search_netrc (p->next, ctl->remotename);
if (p)
{
/* We found the entry, so use the password. */
ctl->password = xstrdup(p->password);
}
}
if (!ctl->password)
{
(void) sprintf(tmpbuf, "Enter password for %s@%s: ",
ctl->remotename, ctl->server.names->id);
ctl->password = xstrdup((char *)getpassword(tmpbuf));
}
}
/*
* Maybe time to go to demon mode...
*/
#if defined(HAVE_SYSLOG)
if (use_syslog)
openlog(program_name, LOG_PID, LOG_MAIL);
#endif
if (poll_interval && !nodetach)
daemonize(logfile, termhook);
/* beyond here we don't want more than one fetchmail running per user */
umask(0077);
signal(SIGABRT, termhook);
signal(SIGINT, termhook);
signal(SIGTERM, termhook);
signal(SIGALRM, termhook);
signal(SIGPIPE, termhook);
signal(SIGQUIT, termhook);
/*
* 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.
*/
signal(SIGUSR1, donothing);
/* pacify people who think all system daemons wake up on SIGHUP */
if (poll_interval && !getuid())
signal(SIGHUP, donothing);
/* here's the exclusion lock */
if ( (lockfp = fopen(lockfile,"w")) != NULL ) {
fprintf(lockfp,"%d",getpid());
if (poll_interval)
fprintf(lockfp," %d", poll_interval);
fclose(lockfp);
atexit(unlockit);
}
/*
* Query all hosts. If there's only one, the error return will
* reflect the status of that transaction.
*/
do {
#ifdef HAVE_RES_SEARCH
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))
{
#ifdef linux
/* interface_check does its own error logging */
if (!interface_check(&ctl->server))
continue;
#endif /* linux */
#ifdef HAVE_GETHOSTBYNAME
/*
* This functions partly as an optimization and partly
* as a probe to make sure our nameserver is still up.
* The multidrop case (especially) needs it.
*/
if (ctl->server.authenticate == A_KERBEROS || MULTIDROP(ctl))
{
struct hostent *namerec;
/* compute the canonical name of the host */
errno = 0;
namerec = gethostbyname(ctl->server.names->id);
if (namerec == (struct hostent *)NULL)
{
error(0, errno,
"skipping %s poll, ",
ctl->server.names->id);
if (errno)
{
if (errno == ENETUNREACH)
break; /* go to sleep */
}
#ifdef HAVE_HERROR /* NEXTSTEP doesn't */
else
herror("DNS error");
#endif /* HAVE_HERROR */
continue;
}
else
{
free(ctl->server.canonical_name);
ctl->server.canonical_name = xstrdup((char *)namerec->h_name);
}
}
#endif /* HAVE_GETHOSTBYNAME */
querystatus = query_host(ctl);
if (!check_only)
update_str_lists(ctl);
}
}
#ifdef HAVE_RES_SEARCH
endhostent(); /* release TCP/IP connection to nameserver */
#endif /* HAVE_RES_SEARCH */
/*
* 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.
*/
for (ctl = querylist; ctl; ctl = ctl->next)
if (ctl->smtp_sockfp)
{
SMTP_quit(ctl->smtp_sockfp);
fclose(ctl->smtp_sockfp);
ctl->smtp_sockfp = (FILE *)NULL;
}
/*
* OK, we've polled. Now sleep.
*/
if (poll_interval)
{
if (outlevel == O_VERBOSE)
{
time_t now;
time(&now);
fprintf(stderr, "fetchmail: sleeping at %s", ctime(&now));
}
/*
* 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.
*/
{
struct itimerval ntimeout;
ntimeout.it_interval.tv_sec = ntimeout.it_interval.tv_usec = 0;
ntimeout.it_value.tv_sec = poll_interval;
ntimeout.it_value.tv_usec = 0;
setitimer(ITIMER_REAL,&ntimeout,NULL);
signal(SIGALRM, donothing);
pause();
signal(SIGALRM, SIG_IGN);
if (lastsig == SIGUSR1
|| ((poll_interval && !getuid()) && lastsig == SIGHUP))
{
#ifdef SYS_SIGLIST_DECLARED
error(0, 0, "awakened by %s", sys_siglist[lastsig]);
#else
error(0, 0, "awakened by signal %d", lastsig);
#endif
}
}
if (outlevel == O_VERBOSE)
{
time_t now;
time(&now);
fprintf(stderr, "fetchmail: awakened at %s", ctime(&now));
}
}
} while
(poll_interval);
if (outlevel == O_VERBOSE)
fprintf(stderr,"fetchmail: normal termination, status %d\n",querystatus);
termhook(0);
exit(querystatus);
}
static int load_params(int argc, char **argv, int optind)
{
int implicitmode, st;
struct passwd *pw;
struct query def_opts, *ctl, *mp;
memset(&def_opts, '\0', sizeof(struct query));
def_opts.server.protocol = P_AUTO;
def_opts.server.timeout = CLIENT_TIMEOUT;
def_opts.remotename = user;
def_opts.smtphost = "localhost";
/* this builds the host list */
if (prc_parse_file(rcfile) != 0)
exit(PS_SYNTAX);
if ((implicitmode = (optind >= argc)))
{
for (ctl = querylist; ctl; ctl = ctl->next)
ctl->active = TRUE;
}
else
for (; optind < argc; optind++)
{
/*
* 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 (str_in_list(&ctl->server.names, argv[optind]))
goto foundit;
ctl = hostalloc(&cmd_opts);
save_str(&ctl->server.names, -1, argv[optind]);
foundit:
ctl->active = TRUE;
}
/* if there's a defaults record, merge it and lose it */
if (querylist && strcmp(querylist->server.names->id, "defaults") == 0)
{
for (ctl = querylist->next; ctl; ctl = ctl->next)
optmerge(ctl, querylist);
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.names->id, "defaults") == 0)
exit(PS_SYNTAX);
/* merge in wired defaults, do sanity checks and prepare internal fields */
for (ctl = querylist; ctl; ctl = ctl->next)
{
if (ctl->active && !(implicitmode && ctl->server.skip))
{
/* merge in defaults */
optmerge(ctl, &def_opts);
/* keep lusers from shooting themselves in the foot :-) */
if (poll_interval && ctl->limit)
{
fprintf(stderr,"fetchmail: you'd never see large messages!\n");
exit(PS_SYNTAX);
}
/* make sure delivery will default to a real local user */
if ((pw = getpwnam(user)) == (struct passwd *)NULL)
{
fprintf(stderr,
"fetchmail: can't set up default delivery to %s\n", user);
exit(PS_SYNTAX); /* has to be from bad rc file */
}
else
{
ctl->uid = pw->pw_uid; /* for local delivery via MDA */
if (!ctl->localnames) /* for local delivery via SMTP */
save_str(&ctl->localnames, -1, user);
}
#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)
{
fputs("fetchmail: can't handle multidrop mailboxes without DNS\n",
stderr);
exit(PS_SYNTAX);
}
#endif /* !HAVE_GETHOSTBYNAME || !HAVE_RES_SEARCH */
/*
* Assign SMTP leaders. We want to allow all query blocks
* sharing the same SMTP host to use the same SMTP connection.
* To accomplish this, we initialize each query block's leader
* field to point to the first block in the list with a matching
* SMTP host.
*
* In the typical case, there will be only one SMTP host (the
* client machine) and thus just one SMTP leader (and one listener
* process) through the entire poll cycle.
*/
if (!ctl->mda)
{
ctl->smtp_sockfp = (FILE *)NULL;
for (mp = querylist; mp && mp != ctl; mp = mp->next)
if (strcmp(mp->smtphost, ctl->smtphost) == 0)
{
ctl->lead_smtp = mp->lead_smtp;
goto no_new_leader;
}
ctl->lead_smtp = ctl;
no_new_leader:;
}
/* similarly, compute server leaders for queries */
for (mp = querylist; mp && mp != ctl; mp = mp->next)
if (strcmp(mp->server.names->id, ctl->server.names->id) == 0)
{
ctl->server.lead_server = mp->server.lead_server;
goto no_new_server;
}
ctl->server.lead_server = &(ctl->server);
no_new_server:;
/* plug in the semi-standard way of indicating a mail address */
if (ctl->server.envelope == (char *)NULL)
ctl->server.envelope = "X-Envelope-To:";
#ifdef linux
/* interface_check does its own error logging */
interface_parse(&ctl->server);
#endif /* linux */
/* sanity checks */
if (ctl->server.port < 0)
{
(void) fprintf(stderr,
"%s configuration invalid, port number cannot be negative",
ctl->server.names->id);
exit(PS_SYNTAX);
}
}
}
/* initialize UID handling */
if ((st = prc_filecheck(idfile)) != 0)
exit(st);
else
initialize_saved_lists(querylist, idfile);
/* if cmd_logfile was explicitly set, use it to override logfile */
if (cmd_logfile)
logfile = cmd_logfile;
return(implicitmode);
}
void termhook(int sig)
/* to be executed on normal or signal-induced termination */
{
struct query *ctl;
/*
* 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 disable 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)
error(0, 0, "terminated with signal %d", sig);
else
/* terminate all SMTP connections cleanly */
for (ctl = querylist; ctl; ctl = ctl->next)
if (ctl->lead_smtp == ctl && ctl->smtp_sockfp != (FILE *)NULL)
SMTP_quit(ctl->smtp_sockfp);
if (!check_only)
write_saved_lists(querylist, idfile);
exit(querystatus);
}
static char *showproto(int proto)
/* protocol index to protocol name mapping */
{
switch (proto)
{
case P_AUTO: return("auto"); break;
case P_POP2: return("POP2"); break;
case P_POP3: return("POP3"); break;
case P_IMAP: return("IMAP"); break;
case P_APOP: return("APOP"); break;
default: return("unknown?!?"); break;
}
}
/*
* Sequence of protocols to try when autoprobing, most capable to least.
*/
static const int autoprobe[] = {P_IMAP, P_POP3, P_POP2};
static int query_host(struct query *ctl)
/* perform fetch transaction with single host */
{
int i, st;
if (outlevel == O_VERBOSE)
{
time_t now;
time(&now);
fprintf(stderr, "Querying %s (protocol %s) at %s",
ctl->server.names->id, showproto(ctl->server.protocol), ctime(&now));
}
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)
break;
}
ctl->server.protocol = P_AUTO;
return(st);
break;
case P_POP2:
return(doPOP2(ctl));
break;
case P_POP3:
case P_APOP:
return(doPOP3(ctl));
break;
case P_IMAP:
return(doIMAP(ctl));
break;
default:
error(0, 0, "unsupported protocol selected.");
return(PS_PROTOCOL);
}
}
void dump_params (struct query *ctl)
/* display query parameters in English */
{
printf("Options for retrieving from %s@%s:\n",
ctl->remotename, visbuf(ctl->server.names->id));
#ifdef HAVE_GETHOSTBYNAME
if (ctl->server.canonical_name)
printf(" Canonical DNS name of server is %s.\n", ctl->server.canonical_name);
#endif /* HAVE_GETHOSTBYNAME */
if (ctl->server.names->next)
{
struct idlist *idp;
printf(" Predeclared mailserver aliases:");
for (idp = ctl->server.names->next; idp; idp = idp->next)
printf(" %s", idp->id);
putchar('\n');
}
if (ctl->server.skip || outlevel == O_VERBOSE)
printf(" This host will%s be queried when no host is specified.\n",
ctl->server.skip ? " not" : "");
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
printf(" Password = '%s'.\n", visbuf(ctl->password));
if (ctl->server.protocol == P_POP3
&& ctl->server.port == KPOP_PORT
&& ctl->server.authenticate == A_KERBEROS)
printf(" Protocol is KPOP");
else
printf(" Protocol is %s", showproto(ctl->server.protocol));
if (ctl->server.port)
printf(" (using port %d)", ctl->server.port);
else if (outlevel == O_VERBOSE)
printf(" (using default port)");
putchar('.');
putchar('\n');
if (ctl->server.authenticate == A_KERBEROS)
printf(" Kerberos authentication enabled.\n");
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.localdomains)
{
struct idlist *idp;
printf(" Local domains:");
for (idp = ctl->server.localdomains; idp; idp = idp->next)
printf(" %s", idp->id);
putchar('\n');
}
printf(" %s messages will be retrieved (--all %s).\n",
ctl->fetchall ? "All" : "Only new",
ctl->fetchall ? "on" : "off");
printf(" Fetched messages will%s be kept on the server (--keep %s).\n",
ctl->keep ? "" : " not",
ctl->keep ? "on" : "off");
printf(" Old messages will%s be flushed before message retrieval (--flush %s).\n",
ctl->flush ? "" : " not",
ctl->flush ? "on" : "off");
printf(" Rewrite of server-local addresses is %sabled (--norewrite %s).\n",
ctl->norewrite ? "dis" : "en",
ctl->norewrite ? "on" : "off");
if (ctl->limit)
printf(" Message size limit is %d bytes (--limit %d).\n",
ctl->limit, ctl->limit);
else if (outlevel == O_VERBOSE)
printf(" No message size limit (--limit 0).\n");
if (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 (ctl->batchlimit)
printf(" SMTP message batch limit is %d.\n", ctl->batchlimit);
else if (outlevel == O_VERBOSE)
printf(" No SMTP message batch limit.\n");
if (ctl->mda)
printf(" Messages will be delivered with '%s.'\n", visbuf(ctl->mda));
else
printf(" Messages will be SMTP-forwarded to '%s'.\n", visbuf(ctl->smtphost));
if (ctl->preconnect)
printf(" Server connection will be preinitialized with '%s.'\n", visbuf(ctl->preconnect));
else if (outlevel == O_VERBOSE)
printf(" No preinitialization command.\n");
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;
printf(" %d local name(s) recognized%s.\n",
count,
(count == 1 && !strcmp(ctl->localnames->id, user)) ? " (by default)" : "");
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("*\n", stdout);
}
if (count > 1)
printf(" Envelope header is assumed to be: %s\n", ctl->server.envelope);
}
#ifdef linux
if (ctl->server.interface)
printf("TCP/IP interface requirements for %s.\n", ctl->server.interface);
else if (outlevel == O_VERBOSE)
printf("No TCP/IP interface requirements 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.protocol > P_POP2)
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)
fprintf(stderr, "\t%s\n", idp->id);
}
}
/* helper functions for string interpretation and display */
void escapes(cp, tp)
/* process standard C-style escape sequences in a string */
const char *cp; /* source string with escapes */
char *tp; /* target buffer for digested string */
{
while (*cp)
{
int cval = 0;
if (*cp == '\\' && strchr("0123456789xX", cp[1]))
{
char *dp, *hex = "00112233445566778899aAbBcCdDeEfF";
int dcount = 0;
if (*++cp == 'x' || *cp == 'X')
for (++cp; (dp = strchr(hex, *cp)) && (dcount++ < 2); cp++)
cval = (cval * 16) + (dp - hex) / 2;
else if (*cp == '0')
while (strchr("01234567",*cp) != (char*)NULL && (dcount++ < 3))
cval = (cval * 8) + (*cp++ - '0');
else
while ((strchr("0123456789",*cp)!=(char*)NULL)&&(dcount++ < 3))
cval = (cval * 10) + (*cp++ - '0');
}
else if (*cp == '\\') /* C-style character escapes */
{
switch (*++cp)
{
case '\\': cval = '\\'; break;
case 'n': cval = '\n'; break;
case 't': cval = '\t'; break;
case 'b': cval = '\b'; break;
case 'r': cval = '\r'; break;
default: cval = *cp;
}
cp++;
}
else
cval = *cp++;
*tp++ = cval;
}
*tp = '\0';
}
static char *visbuf(const char *buf)
/* visibilize a given string */
{
static char vbuf[BUFSIZ];
char *tp = vbuf;
while (*buf)
{
if (isprint(*buf) || *buf == ' ')
*tp++ = *buf++;
else if (*buf == '\n')
{
*tp++ = '\\'; *tp++ = 'n';
buf++;
}
else if (*buf == '\r')
{
*tp++ = '\\'; *tp++ = 'r';
buf++;
}
else if (*buf == '\b')
{
*tp++ = '\\'; *tp++ = 'b';
buf++;
}
else if (*buf < ' ')
{
*tp++ = '\\'; *tp++ = '^'; *tp++ = '@' + *buf;
buf++;
}
else
{
(void) sprintf(tp, "\\0x%02x", *buf++);
tp += strlen(tp);
}
}
*tp++ = '\0';
return(vbuf);
}
/* fetchmail.c ends here */