#include <errno.h>
#include <string.h>
#include <signal.h>
-#ifdef HAVE_MEMORY_H
-#include <memory.h>
-#endif /* HAVE_MEMORY_H */
-#if defined(STDC_HEADERS)
#include <stdlib.h>
-#endif
-#if defined(HAVE_UNISTD_H)
#include <unistd.h>
-#endif
-#if defined(HAVE_STDARG_H)
#include <stdarg.h>
-#else
-#include <varargs.h>
-#endif
#include <ctype.h>
#include <langinfo.h>
+#include "fetchmail.h"
+
/* for W* macros after pclose() */
#define _USE_BSD
#include <sys/types.h>
#include <sys/resource.h>
#include <sys/wait.h>
-
-#include "fetchmail.h"
#include "socket.h"
#include "smtp.h"
-#include "i18n.h"
+#include "gettext.h"
/* BSD portability hack...I know, this is an ugly place to put it */
#if !defined(SIGCHLD) && defined(SIGCLD)
if (ctl->smtp_socket != -1)
{
if (sayquit)
- SMTP_quit(ctl->smtp_socket);
+ SMTP_quit(ctl->smtp_socket, ctl->smtphostmode);
SockClose(ctl->smtp_socket);
ctl->smtp_socket = -1;
}
batchcount = 0;
}
-int smtp_open(struct query *ctl)
-/* try to open a socket to the appropriate SMTP server for this query */
+static void smtp_rset(struct query *ctl)
+/* reset the mail transaction */
{
- char *parsed_host = NULL;
+ if (SMTP_rset(ctl->smtp_socket, ctl->smtphostmode) == SM_UNRECOVERABLE)
+ {
+ /* close the bad connection. fetchmail will reconnect for the
+ * next mail */
+ smtp_close(ctl, 0);
+ }
+}
+int smtp_setup(struct query *ctl)
+/* try to open a socket to the appropriate SMTP server for this query */
+{
/* maybe it's time to close the socket in order to force delivery */
if (last_smtp_ok > 0 && time((time_t *)NULL) - last_smtp_ok > mytimeout)
{
*/
struct idlist *idp;
const char *id_me = run.invisible ? ctl->server.truename : fetchmailhost;
- int oldphase = phase;
+ int oldphase;
+ char *parsed_host = NULL;
errno = 0;
for (idp = ctl->smtphunt; idp; idp = idp->next)
{
char *cp;
-#ifdef INET6_ENABLE
- char *portnum = SMTP_PORT;
-#else
- int portnum = SMTP_PORT;
-#endif /* INET6_ENABLE */
+ const char *portnum = SMTP_PORT;
ctl->smtphost = idp->id; /* remember last host tried. */
- if(ctl->smtphost[0]=='/')
- ctl->listener = LMTP_MODE;
-
- xalloca(parsed_host, char *, strlen(idp->id) + 1);
- strcpy(parsed_host, idp->id);
-
- if ((cp = strrchr(parsed_host, '/')))
+ if (ctl->smtphost[0]=='/')
{
- *cp++ = 0;
-#ifdef INET6_ENABLE
- portnum = cp;
-#else
- portnum = atoi(cp);
-#endif /* INET6_ENABLE */
- }
-
- if (ctl->smtphost[0]=='/'){
+ ctl->smtphostmode = LMTP_MODE;
+ xfree(parsed_host);
if ((ctl->smtp_socket = UnixOpen(ctl->smtphost))==-1)
continue;
- } else
- if ((ctl->smtp_socket = SockOpen(parsed_host,portnum,NULL,
- ctl->server.plugout)) == -1)
+ }
+ else
+ {
+ ctl->smtphostmode = ctl->listener;
+ parsed_host = xstrdup(idp->id);
+ if ((cp = strrchr(parsed_host, '/')))
+ {
+ *cp++ = 0;
+ if (cp[0])
+ portnum = cp;
+ }
+ if ((ctl->smtp_socket = SockOpen(parsed_host,portnum,
+ ctl->server.plugout, &ai1)) == -1)
+ {
+ xfree(parsed_host);
continue;
+ }
+ }
/* return immediately for ODMR */
if (ctl->server.protocol == P_ODMR)
{
- set_timeout(0);
- phase = oldphase;
- return(ctl->smtp_socket); /* success */
+ set_timeout(0);
+ phase = oldphase;
+ xfree(parsed_host);
+ return(ctl->smtp_socket); /* success */
}
- /* are we doing SMTP or LMTP? */
- SMTP_setmode(ctl->listener);
-
/* first, probe for ESMTP */
- if (SMTP_ok(ctl->smtp_socket) == SM_OK &&
- SMTP_ehlo(ctl->smtp_socket, id_me,
- ctl->server.esmtp_name, ctl->server.esmtp_password,
- &ctl->server.esmtp_options) == SM_OK)
- break; /* success */
+ if (SMTP_ok(ctl->smtp_socket, ctl->smtphostmode, TIMEOUT_STARTSMTP) == SM_OK &&
+ SMTP_ehlo(ctl->smtp_socket, ctl->smtphostmode, id_me,
+ ctl->server.esmtp_name, ctl->server.esmtp_password,
+ &ctl->server.esmtp_options) == SM_OK)
+ break; /* success */
/*
* RFC 1869 warns that some listeners hang up on a failed EHLO,
smtp_close(ctl, 0);
/* if opening for ESMTP failed, try SMTP */
- if ((ctl->smtp_socket = SockOpen(parsed_host,portnum,NULL,
- ctl->server.plugout)) == -1)
- continue;
+ if (ctl->smtphost[0]=='/')
+ {
+ if ((ctl->smtp_socket = UnixOpen(ctl->smtphost))==-1)
+ continue;
+ }
+ else
+ {
+ if ((ctl->smtp_socket = SockOpen(parsed_host,portnum,
+ ctl->server.plugout, &ai1)) == -1)
+ {
+ xfree(parsed_host);
+ continue;
+ }
+ }
- if (SMTP_ok(ctl->smtp_socket) == SM_OK &&
- SMTP_helo(ctl->smtp_socket, id_me) == SM_OK)
+ if (SMTP_ok(ctl->smtp_socket, ctl->smtphostmode, TIMEOUT_STARTSMTP) == SM_OK &&
+ SMTP_helo(ctl->smtp_socket, ctl->smtphostmode, id_me) == SM_OK)
break; /* success */
smtp_close(ctl, 0);
}
set_timeout(0);
phase = oldphase;
- }
- /*
- * RFC 1123 requires that the domain name part of the
- * RCPT TO address be "canonicalized", that is a FQDN
- * or MX but not a CNAME. Some listeners (like exim)
- * enforce this. Now that we have the actual hostname,
- * compute what we should canonicalize with.
- *
- * make sure we do not forget to drop the /port if
- * using LMTP (hmh)
- */
- if (ctl->listener == LMTP_MODE && !ctl->smtpaddress)
- {
- if (parsed_host && parsed_host[0] != 0)
- ctl->destaddr = xstrdup(parsed_host);
- else
- ctl->destaddr = (ctl->smtphost && ctl->smtphost[0] != '/') ? ctl->smtphost : "localhost";
- }
- else
- {
- /*
- * Here we try to find a correct domain name part for the RCPT
- * TO address. If smtpaddress is set, no need to guestimate
- * it. Otherwise, using ctl->smtphost as a base is a good
- * base, although we may have to strip any port appended to
- * communicate with SMTP servers that do not listen on the
- * SMTP port. (benj) */
+ /*
+ * RFC 1123 requires that the domain name part of the
+ * RCPT TO address be "canonicalized", that is a FQDN
+ * or MX but not a CNAME. Some listeners (like exim)
+ * enforce this. Now that we have the actual hostname,
+ * compute what we should canonicalize with.
+ */
+ xfree(ctl->destaddr);
if (ctl->smtpaddress)
- ctl->destaddr = ctl->smtpaddress;
- else if (ctl->smtphost && ctl->smtphost[0] != '/')
- {
- char * cp;
- if ((cp = strchr (ctl->smtphost, '/')))
- {
- /* As an alternate port for smtphost is specified, we
- need to strip it from domain name. */
- char *smtpname = xmalloc(cp - ctl->smtphost + 1);
- strncpy(smtpname, ctl->smtphost, cp - ctl->smtphost +1);
- cp = strchr(smtpname, '/');
- *cp = 0;
- ctl->destaddr = smtpname;
- }
- else
- /* No need to strip port, domain name is smtphost. */
- ctl->destaddr = ctl->smtphost;
- }
+ ctl->destaddr = xstrdup(ctl->smtpaddress);
+ /* parsed_host is smtphost without the /port */
+ else if (parsed_host && parsed_host[0] != 0)
+ ctl->destaddr = xstrdup(parsed_host);
/* No smtphost is specified or it is a UNIX socket, then use
localhost as a domain part. */
else
- ctl->destaddr = "localhost";
- }
+ ctl->destaddr = xstrdup("localhost");
+ xfree(parsed_host);
+ }
+ /* end if (ctl->smtp_socket == -1) */
if (outlevel >= O_DEBUG && ctl->smtp_socket != -1)
report(stdout, GT_("forwarding to %s\n"), ctl->smtphost);
}
static int send_bouncemail(struct query *ctl, struct msgblk *msg,
- int userclass, char *message,
+ int userclass, const char *message /* should have \r\n at the end */,
int nerrors, char *errors[])
/* bounce back an error report a la RFC 1892 */
{
char daemon_name[15 + HOSTLEN] = "MAILER-DAEMON@";
- char boundary[BUFSIZ], *bounce_to;
+ char boundary[BUFSIZ];
+ const char *bounce_to;
int sock;
static char *fqdn_of_host = NULL;
const char *md1 = "MAILER-DAEMON", *md2 = "MAILER-DAEMON@";
/* don't bounce in reply to undeliverable bounces */
- if (!msg->return_path[0] ||
+ if (!msg || !msg->return_path[0] ||
strcmp(msg->return_path, "<>") == 0 ||
strcasecmp(msg->return_path, md1) == 0 ||
strncasecmp(msg->return_path, md2, strlen(md2)) == 0)
bounce_to = (run.bouncemail ? msg->return_path : run.postmaster);
- SMTP_setmode(SMTP_MODE);
-
/* can't just use fetchmailhost here, it might be localhost */
if (fqdn_of_host == NULL)
- fqdn_of_host = host_fqdn();
+ fqdn_of_host = host_fqdn(0); /* can't afford to bail out and
+ lose the NDN here */
strlcat(daemon_name, fqdn_of_host, sizeof(daemon_name));
/* we need only SMTP for this purpose */
- if ((sock = SockOpen("localhost", SMTP_PORT, NULL, NULL)) == -1)
+ /* XXX FIXME: hardcoding localhost is nonsense if smtphost can be
+ * configured */
+ if ((sock = SockOpen("localhost", SMTP_PORT, NULL, &ai1)) == -1)
return(FALSE);
- if (SMTP_ok(sock) != SM_OK)
+ if (SMTP_ok(sock, SMTP_MODE, TIMEOUT_STARTSMTP) != SM_OK)
{
SockClose(sock);
return FALSE;
}
- if (SMTP_helo(sock, fetchmailhost) != SM_OK
- || SMTP_from(sock, "<>", (char *)NULL) != SM_OK
- || SMTP_rcpt(sock, bounce_to) != SM_OK
- || SMTP_data(sock) != SM_OK)
+ if (SMTP_helo(sock, SMTP_MODE, fetchmailhost) != SM_OK
+ || SMTP_from(sock, SMTP_MODE, "<>", (char *)NULL) != SM_OK
+ || SMTP_rcpt(sock, SMTP_MODE, bounce_to) != SM_OK
+ || SMTP_data(sock, SMTP_MODE) != SM_OK)
{
- SMTP_quit(sock);
+ SMTP_quit(sock, SMTP_MODE);
SockClose(sock);
return(FALSE);
}
/* our first duty is to keep the sacred foo counters turning... */
snprintf(boundary, sizeof(boundary), "foo-mani-padme-hum-%ld-%ld-%ld",
- (long)getpid(), (long)getppid(), time(NULL));
+ (long)getpid(), (long)getppid(), (long)time(NULL));
if (outlevel >= O_VERBOSE)
report(stdout, GT_("SMTP: (bounce-message body)\n"));
SockPrintf(sock, "--%s\r\n", boundary);
SockPrintf(sock,"Content-Type: text/plain\r\n");
SockPrintf(sock, "\r\n");
- SockPrintf(sock, "This message was created automatically by mail delivery software.\r\n\r\n");
+ SockPrintf(sock, "This message was created automatically by mail delivery software.\r\n");
+ SockPrintf(sock, "\r\n");
SockPrintf(sock, "A message that you sent could not be delivered to one or more of its\r\n");
- SockPrintf(sock, "recipients. This is a permanent error. The following address(es) failed:\r\n");
+ SockPrintf(sock, "recipients. This is a permanent error.\r\n");
+ SockPrintf(sock, "\r\n");
+ SockPrintf(sock, "Reason: %s", message);
SockPrintf(sock, "\r\n");
+ SockPrintf(sock, "The following address(es) failed:\r\n");
if (nerrors)
{
}
SockPrintf(sock, "--%s--\r\n", boundary);
- if (SMTP_eom(sock) != SM_OK || SMTP_quit(sock))
+ if (SMTP_eom(sock, SMTP_MODE) != SM_OK
+ || SMTP_quit(sock, SMTP_MODE) != SM_OK)
{
SockClose(sock);
return(FALSE);
{
int smtperr = atoi(smtp_response);
char *responses[1];
- struct idlist *walk;
- int found = 0;
- xalloca(responses[0], char *, strlen(smtp_response)+1);
- strcpy(responses[0], smtp_response);
-
-#ifdef __UNUSED__
- /*
- * Don't do this! It can really mess you up if, for example, you're
- * reporting an error with a single RCPT TO address among several;
- * RSET discards the message body and it doesn't get sent to the
- * valid recipients.
- */
- SMTP_rset(ctl->smtp_socket); /* stay on the safe side */
- if (outlevel >= O_DEBUG)
- report(stdout, GT_("Saved error is still %d\n"), smtperr);
-#endif /* __UNUSED */
+ responses[0] = xstrdup(smtp_response);
/*
* Note: send_bouncemail message strings are not made subject
* messages, which are probably in English (none of the
* MTAs I know about are internationalized).
*/
- for( walk = ctl->antispam; walk; walk = walk->next )
- if ( walk->val.status.num == smtperr )
- {
- found=1;
- break;
- }
-
- /* if (str_find(&ctl->antispam, smtperr)) */
- if ( found )
+ if (str_find(&ctl->antispam, smtperr))
{
/*
* SMTP listener explicitly refuses to deliver mail
*
*/
if (run.spambounce)
- {
- char rejmsg[160];
- snprintf(rejmsg, sizeof(rejmsg),
- "spam filter or virus scanner rejected message because:\r\n"
- "%s\r\n", responses[0]);
-
- send_bouncemail(ctl, msg, XMIT_ACCEPT,
- rejmsg, 1, responses);
- }
+ {
+ char rejmsg[160];
+ snprintf(rejmsg, sizeof(rejmsg),
+ "spam filter or virus scanner rejected message because:\r\n"
+ "%s\r\n", responses[0]);
+
+ send_bouncemail(ctl, msg, XMIT_ACCEPT,
+ rejmsg, 1, responses);
+ }
+ free(responses[0]);
return(PS_REFUSED);
}
*/
if (smtperr >= 400)
report(stderr, GT_("%cMTP error: %s\n"),
- ctl->listener,
+ ctl->smtphostmode,
responses[0]);
switch (smtperr)
send_bouncemail(ctl, msg, XMIT_ACCEPT,
"This message was too large (SMTP error 552).\r\n",
1, responses);
+ free(responses[0]);
return(PS_REFUSED);
case 553: /* invalid sending domain */
* (b) we wouldn't want spammers to get confirmation that
* this address is live, anyway.
*/
-#ifdef __DONT_FEED_THE_SPAMMERS__
- if (run.bouncemail)
- send_bouncemail(ctl, msg, XMIT_ACCEPT,
- "Invalid address in MAIL FROM (SMTP error 553).\r\n",
- 1, responses);
-#endif /* __DONT_FEED_THE_SPAMMERS__ */
+ free(responses[0]);
return(PS_REFUSED);
+ case 530: /* must issue STARTTLS error */
+ /*
+ * Some SMTP servers insist on encrypted communication
+ * Let's set PS_TRANSIENT, otherwise all messages to be sent
+ * over such server would be blackholed - see RFC 3207.
+ */
+ if (outlevel > O_SILENT)
+ report_complete(stdout,
+ GT_("SMTP server requires STARTTLS, keeping message.\n"));
+ free(responses[0]);
+ return(PS_TRANSIENT);
+
default:
/* bounce non-transient errors back to the sender */
if (smtperr >= 500 && smtperr <= 599)
{
- send_bouncemail(ctl, msg, XMIT_ACCEPT,
+ if (run.bouncemail)
+ send_bouncemail(ctl, msg, XMIT_ACCEPT,
"General SMTP/ESMTP error.\r\n",
1, responses);
+ free(responses[0]);
return(PS_REFUSED);
}
/*
* these are not actual failures, we're very likely to be
* able to recover on the next cycle.
*/
+ free(responses[0]);
return(PS_TRANSIENT);
}
}
{
int smtperr = atoi(smtp_response);
+ (void)msg;
+
if (str_find(&ctl->antispam, smtperr))
{
if (run.spambounce)
if (smtperr >= 400)
report(stderr, GT_("%cMTP error: %s\n"),
- ctl->listener,
+ ctl->smtphostmode,
smtp_response);
switch (smtperr)
return(PS_REFUSED);
case 553: /* invalid sending domain */
-#ifdef __DONT_FEED_THE_SPAMMERS__
- if (run.bouncemail)
- return(PS_SUCCESS);
-#endif /* __DONT_FEED_THE_SPAMMERS__ */
+ /* do not send bounce mail - it would feed spammers */
return(PS_REFUSED);
default:
int n, oldphase;
char *last;
+ if (!buf)
+ return -1;
+
/* The line may contain NUL characters. Find the last char to use
* -- the real line termination is the sequence "\n\0".
*/
if (ctl->server.base_protocol->delimited) /* server has already byte-stuffed */
{
if (ctl->mda) {
+ /* writing to MDA, undo byte-stuffing */
++buf;
} else {
/* writing to SMTP, leave the byte-stuffing in place */;
}
else /* if (!protocol->delimited) -- not byte-stuffed already */
{
- if (!ctl->mda) /* byte-stuff it */
- {
- if (!ctl->bsmtp)
- SockWrite(ctl->smtp_socket, buf, 1);
- else
- {
- fwrite(buf, 1, 1, sinkfp);
+ /* byte-stuff it */
+ if (!ctl->mda) {
+ if (!ctl->bsmtp) {
+ n = SockWrite(ctl->smtp_socket, buf, 1);
+ } else {
+ n = fwrite(buf, 1, 1, sinkfp);
+ if (ferror(sinkfp)) n = -1;
}
+ if (n < 0)
+ return n;
}
}
}
}
n = 0;
- if (ctl->mda || ctl->bsmtp)
- n = fwrite(buf, last - buf, 1, sinkfp);
- else if (ctl->smtp_socket != -1)
+ if (ctl->mda || ctl->bsmtp) {
+ n = fwrite(buf, 1, last - buf, sinkfp);
+ if (ferror(sinkfp)) n = -1;
+ } else if (ctl->smtp_socket != -1)
n = SockWrite(ctl->smtp_socket, buf, last - buf);
phase = oldphase;
/* open a BSMTP stream */
{
struct idlist *idp;
+ int need_anglebrs;
if (strcmp(ctl->bsmtp, "-") == 0)
sinkfp = stdout;
else
sinkfp = fopen(ctl->bsmtp, "a");
+ if (!sinkfp || ferror(sinkfp)) {
+ report(stderr, GT_("BSMTP file open failed: %s\n"),
+ strerror(errno));
+ return(PS_BSMTP);
+ }
+
/* see the ap computation under the SMTP branch */
- fprintf(sinkfp,
- "MAIL FROM:%s", (msg->return_path[0]) ? msg->return_path : user);
+ need_anglebrs = (msg->return_path[0] != '<');
+ fprintf(sinkfp,
+ "MAIL FROM:%s%s%s",
+ need_anglebrs ? "<" : "",
+ (msg->return_path[0]) ? msg->return_path : user,
+ need_anglebrs ? ">" : "");
if (ctl->pass8bits || (ctl->mimemsg & MSG_IS_8BIT))
fputs(" BODY=8BITMIME", sinkfp);
* enforce this. Now that we have the actual hostname,
* compute what we should canonicalize with.
*/
- ctl->destaddr = ctl->smtpaddress ? ctl->smtpaddress : "localhost";
+ xfree(ctl->destaddr);
+ ctl->destaddr = xstrdup(ctl->smtpaddress ? ctl->smtpaddress : "localhost");
*bad_addresses = 0;
for (idp = msg->recipients; idp; idp = idp->next)
if (idp->val.status.mark == XMIT_ACCEPT)
{
- fprintf(sinkfp, "RCPT TO: %s\r\n",
+ fprintf(sinkfp, "RCPT TO:<%s>\r\n",
rcpt_address (ctl, idp->id, 1));
(*good_addresses)++;
}
fputs("DATA\r\n", sinkfp);
- if (ferror(sinkfp))
+ if (fflush(sinkfp) || ferror(sinkfp))
{
- report(stderr, GT_("BSMTP file open or preamble write failed\n"));
+ report(stderr, GT_("BSMTP preamble write failed: %s.\n"), strerror(errno));
return(PS_BSMTP);
}
}
static int open_smtp_sink(struct query *ctl, struct msgblk *msg,
- int *good_addresses, int *bad_addresses)
+ int *good_addresses, int *bad_addresses /* this must be signed, to prevent endless loop in from_addresses */)
/* open an SMTP stream */
{
const char *ap;
ap = addr;
}
- if ((smtp_err = SMTP_from(ctl->smtp_socket, ap, options)) == SM_UNRECOVERABLE)
+ if ((smtp_err = SMTP_from(ctl->smtp_socket, ctl->smtphostmode,
+ ap, options)) == SM_UNRECOVERABLE)
{
smtp_close(ctl, 0);
return(PS_TRANSIENT);
{
int err = handle_smtp_report(ctl, msg); /* map to PS_TRANSIENT or PS_REFUSED */
- SMTP_rset(ctl->smtp_socket); /* stay on the safe side */
+ smtp_rset(ctl); /* stay on the safe side */
return(err);
}
for (idp = msg->recipients; idp; idp = idp->next)
total_addresses++;
#ifdef EXPLICIT_BOUNCE_ON_BAD_ADDRESS
- xalloca(from_responses, char **, sizeof(char *) * total_addresses);
+ from_responses = (char **)xmalloc(sizeof(char *) * total_addresses);
#endif /* EXPLICIT_BOUNCE_ON_BAD_ADDRESS */
for (idp = msg->recipients; idp; idp = idp->next)
if (idp->val.status.mark == XMIT_ACCEPT)
{
const char *address;
address = rcpt_address (ctl, idp->id, 1);
- if ((smtp_err = SMTP_rcpt(ctl->smtp_socket, address)) == SM_UNRECOVERABLE)
+ if ((smtp_err = SMTP_rcpt(ctl->smtp_socket, ctl->smtphostmode,
+ address)) == SM_UNRECOVERABLE)
{
smtp_close(ctl, 0);
+transient:
+#ifdef EXPLICIT_BOUNCE_ON_BAD_ADDRESS
+ while (*bad_addresses)
+ free(from_responses[--*bad_addresses]);
+ free(from_responses);
+#endif /* EXPLICIT_BOUNCE_ON_BAD_ADDRESS */
return(PS_TRANSIENT);
}
if (smtp_err == SM_OK)
case PS_SUCCESS:
#ifdef EXPLICIT_BOUNCE_ON_BAD_ADDRESS
- xalloca(from_responses[*bad_addresses],
- char *,
- strlen(smtp_response)+1);
- strcpy(from_responses[*bad_addresses], smtp_response);
+ from_responses[*bad_addresses] = xstrdup(smtp_response);
#endif /* EXPLICIT_BOUNCE_ON_BAD_ADDRESS */
(*bad_addresses)++;
if (outlevel >= O_VERBOSE)
report(stderr,
GT_("%cMTP listener doesn't like recipient address `%s'\n"),
- ctl->listener, address);
+ ctl->smtphostmode, address);
break;
case PS_REFUSED:
if (outlevel >= O_VERBOSE)
report(stderr,
GT_("%cMTP listener doesn't really like recipient address `%s'\n"),
- ctl->listener, address);
+ ctl->smtphostmode, address);
break;
}
}
* crap. If one of the recipients returned PS_TRANSIENT,
* we return exactly that.
*/
- SMTP_rset(ctl->smtp_socket); /* required by RFC1870 */
- return(PS_TRANSIENT);
+ smtp_rset(ctl); /* required by RFC1870 */
+ goto transient;
}
#ifdef EXPLICIT_BOUNCE_ON_BAD_ADDRESS
/*
* This should not be necessary, because the SMTP listener itself
- * should genrate a bounce for the bad address.
+ * should generate a bounce for the bad address.
+ *
+ * XXX FIXME 2006-01-19: is this comment true? I don't think
+ * it is, because the SMTP listener isn't required to accept bogus
+ * messages. There appears to be general SMTP<->MDA and
+ * responsibility confusion.
*/
if (*bad_addresses)
send_bouncemail(ctl, msg, XMIT_RCPTBAD,
"Some addresses were rejected by the MDA fetchmail forwards to.\r\n",
*bad_addresses, from_responses);
+ while (*bad_addresses)
+ free(from_responses[--*bad_addresses]);
+ free(from_responses);
#endif /* EXPLICIT_BOUNCE_ON_BAD_ADDRESS */
/*
{
if (outlevel >= O_VERBOSE)
report(stderr, GT_("no address matches; no postmaster set.\n"));
- SMTP_rset(ctl->smtp_socket); /* required by RFC1870 */
+ smtp_rset(ctl); /* required by RFC1870 */
return(PS_REFUSED);
}
- if ((smtp_err = SMTP_rcpt(ctl->smtp_socket,
+ if ((smtp_err = SMTP_rcpt(ctl->smtp_socket, ctl->smtphostmode,
rcpt_address (ctl, run.postmaster, 0))) == SM_UNRECOVERABLE)
{
smtp_close(ctl, 0);
if (smtp_err != SM_OK)
{
report(stderr, GT_("can't even send to %s!\n"), run.postmaster);
- SMTP_rset(ctl->smtp_socket); /* required by RFC1870 */
+ smtp_rset(ctl); /* required by RFC1870 */
return(PS_REFUSED);
}
* Tell the listener we're ready to send data.
* Some listeners (like zmailer) may return antispam errors here.
*/
- if ((smtp_err = SMTP_data(ctl->smtp_socket)) == SM_UNRECOVERABLE)
+ if ((smtp_err = SMTP_data(ctl->smtp_socket, ctl->smtphostmode))
+ == SM_UNRECOVERABLE)
{
smtp_close(ctl, 0);
return(PS_TRANSIENT);
if (smtp_err != SM_OK)
{
int err = handle_smtp_report(ctl, msg);
- SMTP_rset(ctl->smtp_socket); /* stay on the safe side */
+ smtp_rset(ctl); /* stay on the safe side */
return(err);
}
int *good_addresses, int *bad_addresses)
/* open a stream to a local MDA */
{
-#ifdef HAVE_SETEUID
uid_t orig_uid;
-#endif /* HAVE_SETEUID */
struct idlist *idp;
int length = 0, fromlen = 0, nameslen = 0;
char *names = NULL, *before, *after, *from = NULL;
- ctl->destaddr = "localhost";
+ (void)bad_addresses;
+ xfree(ctl->destaddr);
+ ctl->destaddr = xstrdup("localhost");
for (idp = msg->recipients; idp; idp = idp->next)
if (idp->val.status.mark == XMIT_ACCEPT)
*/
nameslen = 0;
for (idp = msg->recipients; idp; idp = idp->next)
- if ((idp->val.status.mark == XMIT_ACCEPT))
+ if (idp->val.status.mark == XMIT_ACCEPT)
nameslen += (strlen(idp->id) + 1); /* string + ' ' */
- if ((*good_addresses == 0))
+ if (*good_addresses == 0)
nameslen = strlen(run.postmaster);
names = (char *)xmalloc(nameslen + 1); /* account for '\0' */
sp += 2;
}
- after = xmalloc(length + 1);
+ after = (char *)xmalloc(length + 1);
/* copy mda source string to after, while expanding %[sTF] */
for (dp = after, sp = before; (*dp = *sp); dp++, sp++) {
if (sp[0] != '%') continue;
+ if (sp > before && sp[-1] == '\'') {
+ report(stderr, GT_("MDA option contains single-quoted %%%c expansion.\n"), sp[1]);
+ report(stderr, GT_("Refusing to deliver. Check the manual and fix your mda option.\n"));
+ free(before);
+ free(after);
+ if (from) free(from);
+ if (names) free(names);
+ return PS_SYNTAX;
+ }
+
/* need to expand? BTW, no here overflow, because in
** the worst case (end of string) sp[1] == '\0' */
if (sp[1] == 's' || sp[1] == 'T') {
if (outlevel >= O_DEBUG)
report(stdout, GT_("about to deliver with: %s\n"), before);
-#ifdef HAVE_SETEUID
/*
* Arrange to run with user's permissions if we're root.
* This will initialize the ownership of any files the
* under all BSDs and Linux)
*/
orig_uid = getuid();
- seteuid(ctl->uid);
-#endif /* HAVE_SETEUID */
+ if (seteuid(ctl->uid)) {
+ report(stderr, GT_("Cannot switch effective user id to %ld: %s\n"), (long)ctl->uid, strerror(errno));
+ return PS_IOERR;
+ }
sinkfp = popen(before, "w");
free(before);
before = NULL;
-#ifdef HAVE_SETEUID
/* this will fail quietly if we didn't start as root */
- seteuid(orig_uid);
-#endif /* HAVE_SETEUID */
+ if (seteuid(orig_uid)) {
+ report(stderr, GT_("Cannot switch effective user id back to original %ld: %s\n"), (long)orig_uid, strerror(errno));
+ return PS_IOERR;
+ }
if (!sinkfp)
{
{
*bad_addresses = *good_addresses = 0;
+ if (want_progress() && outlevel >= O_VERBOSE && !ctl->mda && !ctl->bsmtp) puts("");
+
if (ctl->bsmtp) /* dump to a BSMTP batch file */
return(open_bsmtp_sink(ctl, msg, good_addresses, bad_addresses));
/*
* open a socket fails, fall through to attempt delivery via
* local MDA.
*/
- else if (!ctl->mda && smtp_open(ctl) != -1)
+ else if (!ctl->mda && smtp_setup(ctl) != -1)
return(open_smtp_sink(ctl, msg, good_addresses, bad_addresses));
/*
else if (!ctl->mda)
{
report(stderr, GT_("%cMTP connect to %s failed\n"),
- ctl->listener,
+ ctl->smtphostmode,
ctl->smtphost ? ctl->smtphost : "localhost");
#ifndef FALLBACK_MDA
/* perform end-of-message actions on the current output sink */
{
int smtp_err;
- if (ctl->mda)
- {
- int rc;
+
+ if (want_progress() && outlevel >= O_VERBOSE && !ctl->mda && !ctl->bsmtp) puts("");
+
+ if (ctl->bsmtp && sinkfp) {
+ int error, oerrno;
+
+ /* implicit disk-full check here... */
+ fputs(".\r\n", sinkfp);
+ error = ferror(sinkfp);
+ oerrno = errno;
+ if (strcmp(ctl->bsmtp, "-"))
+ {
+ if (fclose(sinkfp) == EOF) {
+ error = 1;
+ oerrno = errno;
+ }
+ sinkfp = (FILE *)NULL;
+ }
+ if (error)
+ {
+ report(stderr,
+ GT_("Message termination or close of BSMTP file failed: %s\n"), strerror(oerrno));
+ return(FALSE);
+ }
+ } else if (ctl->mda) {
+ int rc = 0, e = 0, e2 = 0, err = 0;
/* close the delivery pipe, we'll reopen before next message */
if (sinkfp)
{
+ if (ferror(sinkfp))
+ err = 1, e2 = errno;
+ if ((fflush(sinkfp)))
+ err = 1, e2 = errno;
+
+ errno = 0;
rc = pclose(sinkfp);
+ e = errno;
sinkfp = (FILE *)NULL;
}
- else
- rc = 0;
deal_with_sigchld(); /* Restore SIGCHLD handling to reap zombies */
- if (rc)
+ if (rc || err)
{
- if (WIFSIGNALED(rc)) {
+ if (err) {
+ report(stderr, GT_("Error writing to MDA: %s\n"), strerror(e2));
+ } else if (WIFSIGNALED(rc)) {
report(stderr,
GT_("MDA died of signal %d\n"), WTERMSIG(rc));
} else if (WIFEXITED(rc)) {
GT_("MDA returned nonzero status %d\n"), WEXITSTATUS(rc));
} else {
report(stderr,
- GT_("Strange: MDA pclose returned %d, cannot handle at %s:%d\n"), rc, __FILE__, __LINE__);
+ GT_("Strange: MDA pclose returned %d and errno %d/%s, cannot handle at %s:%d\n"),
+ rc, e, strerror(e), __FILE__, __LINE__);
}
return(FALSE);
}
}
- else if (ctl->bsmtp && sinkfp)
- {
- int error;
-
- /* implicit disk-full check here... */
- fputs(".\r\n", sinkfp);
- error = ferror(sinkfp);
- if (strcmp(ctl->bsmtp, "-"))
- {
- if (fclose(sinkfp) == EOF) error = 1;
- sinkfp = (FILE *)NULL;
- }
- if (error)
- {
- report(stderr,
- GT_("Message termination or close of BSMTP file failed\n"));
- return(FALSE);
- }
- }
else if (forward)
{
/* write message terminator */
- if ((smtp_err = SMTP_eom(ctl->smtp_socket)) == SM_UNRECOVERABLE)
+ if ((smtp_err = SMTP_eom(ctl->smtp_socket, ctl->smtphostmode))
+ == SM_UNRECOVERABLE)
{
smtp_close(ctl, 0);
return(FALSE);
{
if (handle_smtp_report(ctl, msg) != PS_REFUSED)
{
- SMTP_rset(ctl->smtp_socket); /* stay on the safe side */
+ smtp_rset(ctl); /* stay on the safe side */
return(FALSE);
}
else
{
report(stderr, GT_("SMTP listener refused delivery\n"));
- SMTP_rset(ctl->smtp_socket); /* stay on the safe side */
+ smtp_rset(ctl); /* stay on the safe side */
return(TRUE);
}
}
* otherwise the message will get left in the queue and resent
* to people who got it the first time.
*/
- if (ctl->listener == LMTP_MODE)
+ if (ctl->smtphostmode == LMTP_MODE)
{
if (lmtp_responses == 0)
{
- SMTP_ok(ctl->smtp_socket);
+ SMTP_ok(ctl->smtp_socket, ctl->smtphostmode, TIMEOUT_EOM);
/*
* According to RFC2033, 503 is the only legal response
}
else
{
- int i, errors;
+ int i, errors, rc = FALSE;
char **responses;
/* eat the RFC2033-required responses, saving errors */
- xalloca(responses, char **, sizeof(char *) * lmtp_responses);
+ responses = (char **)xmalloc(sizeof(char *) * lmtp_responses);
for (errors = i = 0; i < lmtp_responses; i++)
{
- if ((smtp_err = SMTP_ok(ctl->smtp_socket)) == SM_UNRECOVERABLE)
+ if ((smtp_err = SMTP_ok(ctl->smtp_socket, ctl->smtphostmode, TIMEOUT_EOM))
+ == SM_UNRECOVERABLE)
{
smtp_close(ctl, 0);
- return(FALSE);
+ goto unrecov;
}
- if (smtp_err == SM_OK)
- responses[i] = (char *)NULL;
- else
+ if (smtp_err != SM_OK)
{
- xalloca(responses[errors],
- char *,
- strlen(smtp_response)+1);
- strcpy(responses[errors], smtp_response);
+ responses[errors] = xstrdup(smtp_response);
errors++;
}
}
if (errors == 0)
- return(TRUE); /* all deliveries succeeded */
+ rc = TRUE; /* all deliveries succeeded */
else
/*
* One or more deliveries failed.
* message from the server so it won't be
* re-forwarded on subsequent poll cycles.
*/
- return(send_bouncemail(ctl, msg, XMIT_ACCEPT,
- "LMTP partial delivery failure.\r\n",
- errors, responses));
+ rc = send_bouncemail(ctl, msg, XMIT_ACCEPT,
+ "LMTP partial delivery failure.\r\n",
+ errors, responses);
+
+unrecov:
+ for (i = 0; i < errors; i++)
+ free(responses[i]);
+ free(responses);
+ return rc;
}
}
}
return(TRUE);
}
-int open_warning_by_mail(struct query *ctl, struct msgblk *msg)
+int open_warning_by_mail(struct query *ctl)
/* set up output sink for a mailed warning to calling user */
{
int good, bad;
/* if rfc2047charset is non-NULL, encode the line (that is assumed to be
* a header line) as per RFC-2047 using rfc2047charset as the character
* set field */
-#if defined(HAVE_STDARG_H)
void stuff_warning(const char *rfc2047charset, struct query *ctl, const char *fmt, ... )
-#else
-void stuff_warning(rfc2047charset, ctl, fmt, va_alist)
-const char *charset;
-struct query *ctl;
-const char *fmt; /* printf-style format */
-va_dcl
-#endif
{
/* make huge -- i18n can bulk up error messages a lot */
char buf[2*MSGBUFSIZE+4];
* case it was a string constant. We make a virtue of that necessity
* here by supporting stdargs/varargs.
*/
-#if defined(HAVE_STDARG_H)
va_start(ap, fmt) ;
-#else
- va_start(ap);
-#endif
vsnprintf(buf, sizeof(buf) - 2, fmt, ap);
va_end(ap);
close_sink(ctl, msg, TRUE);
}
+void abort_message_sink(struct query *ctl)
+/*
+ * Forcibly close the SMTP connection and re-open.
+ *
+ * Used to abort message delivery once the DATA command has been issued.
+ * Required because all text after the DATA command is considered to be
+ * part of the message body (it is impossible to issue an SMTP command
+ * to abort message delivery once the DATA command has been issued).
+ */
+{
+ smtp_close(ctl, 0);
+ smtp_setup(ctl);
+}
+
/* sink.c ends here */
projects / ~andy / fetchmail / blobdiff