Example #1
0
void
queue_loop(uint64_t evpid)
{
	m_create(p_queue, IMSG_DELIVERY_LOOP, 0, 0, -1);
	m_add_evpid(p_queue, evpid);
	m_close(p_queue);
}
Example #2
0
void
queue_ok(uint64_t evpid)
{
	m_create(p_queue, IMSG_DELIVERY_OK, 0, 0, -1);
	m_add_evpid(p_queue, evpid);
	m_close(p_queue);
}
Example #3
0
void
queue_permfail(uint64_t evpid, const char *reason, enum enhanced_status_code code)
{
	m_create(p_queue, IMSG_DELIVERY_PERMFAIL, 0, 0, -1);
	m_add_evpid(p_queue, evpid);
	m_add_string(p_queue, reason);
	m_add_int(p_queue, (int)code);
	m_close(p_queue);
}
Example #4
0
void
m_add_envelope(struct mproc *m, const struct envelope *evp)
{
	char	buf[sizeof(*evp)];

	envelope_dump_buffer(evp, buf, sizeof(buf));
	m_add_evpid(m, evp->id);
	m_add_string(m, buf);
}
Example #5
0
static void
queue_imsg(struct mproc *p, struct imsg *imsg)
{
	struct delivery_bounce	 bounce;
	struct bounce_req_msg	*req_bounce;
	struct envelope		 evp;
	struct msg		 m;
	const char		*reason;
	uint64_t		 reqid, evpid, holdq;
	uint32_t		 msgid;
	time_t			 nexttry;
	int			 fd, mta_ext, ret, v, flags, code;

	memset(&bounce, 0, sizeof(struct delivery_bounce));
	if (p->proc == PROC_PONY) {

		switch (imsg->hdr.type) {
		case IMSG_SMTP_MESSAGE_CREATE:
			m_msg(&m, imsg);
			m_get_id(&m, &reqid);
			m_end(&m);

			ret = queue_message_create(&msgid);

			m_create(p, IMSG_SMTP_MESSAGE_CREATE, 0, 0, -1);
			m_add_id(p, reqid);
			if (ret == 0)
				m_add_int(p, 0);
			else {
				m_add_int(p, 1);
				m_add_msgid(p, msgid);
			}
			m_close(p);
			return;

		case IMSG_SMTP_MESSAGE_ROLLBACK:
			m_msg(&m, imsg);
			m_get_msgid(&m, &msgid);
			m_end(&m);

			queue_message_delete(msgid);

			m_create(p_scheduler, IMSG_QUEUE_MESSAGE_ROLLBACK,
			    0, 0, -1);
			m_add_msgid(p_scheduler, msgid);
			m_close(p_scheduler);
			return;

		case IMSG_SMTP_MESSAGE_COMMIT:
			m_msg(&m, imsg);
			m_get_id(&m, &reqid);
			m_get_msgid(&m, &msgid);
			m_end(&m);

			ret = queue_message_commit(msgid);

			m_create(p, IMSG_SMTP_MESSAGE_COMMIT, 0, 0, -1);
			m_add_id(p, reqid);
			m_add_int(p, (ret == 0) ? 0 : 1);
			m_close(p);

			if (ret) {
				m_create(p_scheduler, IMSG_QUEUE_MESSAGE_COMMIT,
				    0, 0, -1);
				m_add_msgid(p_scheduler, msgid);
				m_close(p_scheduler);
			}
			return;

		case IMSG_SMTP_MESSAGE_OPEN:
			m_msg(&m, imsg);
			m_get_id(&m, &reqid);
			m_get_msgid(&m, &msgid);
			m_end(&m);

			fd = queue_message_fd_rw(msgid);

			m_create(p, IMSG_SMTP_MESSAGE_OPEN, 0, 0, fd);
			m_add_id(p, reqid);
			m_add_int(p, (fd == -1) ? 0 : 1);
			m_close(p);
			return;

		case IMSG_QUEUE_SMTP_SESSION:
			bounce_fd(imsg->fd);
			return;
		}
	}

	if (p->proc == PROC_LKA) {
		switch (imsg->hdr.type) {
		case IMSG_LKA_ENVELOPE_SUBMIT:
			m_msg(&m, imsg);
			m_get_id(&m, &reqid);
			m_get_envelope(&m, &evp);
			m_end(&m);
		    
			if (evp.id == 0)
				log_warnx("warn: imsg_queue_submit_envelope: evpid=0");
			if (evpid_to_msgid(evp.id) == 0)
				log_warnx("warn: imsg_queue_submit_envelope: msgid=0, "
				    "evpid=%016"PRIx64, evp.id);
			ret = queue_envelope_create(&evp);
			m_create(p_pony, IMSG_QUEUE_ENVELOPE_SUBMIT, 0, 0, -1);
			m_add_id(p_pony, reqid);
			if (ret == 0)
				m_add_int(p_pony, 0);
			else {
				m_add_int(p_pony, 1);
				m_add_evpid(p_pony, evp.id);
			}
			m_close(p_pony);
			if (ret) {
				m_create(p_scheduler,
				    IMSG_QUEUE_ENVELOPE_SUBMIT, 0, 0, -1);
				m_add_envelope(p_scheduler, &evp);
				m_close(p_scheduler);

			}
			return;

		case IMSG_LKA_ENVELOPE_COMMIT:
			m_msg(&m, imsg);
			m_get_id(&m, &reqid);
			m_end(&m);
			m_create(p_pony, IMSG_QUEUE_ENVELOPE_COMMIT, 0, 0, -1);
			m_add_id(p_pony, reqid);
			m_add_int(p_pony, 1);
			m_close(p_pony);
			return;
		}
	}

	if (p->proc == PROC_SCHEDULER) {
		switch (imsg->hdr.type) {
		case IMSG_SCHED_ENVELOPE_REMOVE:
			m_msg(&m, imsg);
			m_get_evpid(&m, &evpid);
			m_end(&m);

			/* already removed by scheduler */
			if (queue_envelope_load(evpid, &evp) == 0)
				return;
			queue_log(&evp, "Remove", "Removed by administrator");
			queue_envelope_delete(evpid);
			return;

		case IMSG_SCHED_ENVELOPE_EXPIRE:
			m_msg(&m, imsg);
			m_get_evpid(&m, &evpid);
			m_end(&m);

			/* already removed by scheduler*/
			if (queue_envelope_load(evpid, &evp) == 0)
				return;

			bounce.type = B_ERROR;
			envelope_set_errormsg(&evp, "Envelope expired");
			envelope_set_esc_class(&evp, ESC_STATUS_TEMPFAIL);
			envelope_set_esc_code(&evp, ESC_DELIVERY_TIME_EXPIRED);
			queue_bounce(&evp, &bounce);
			queue_log(&evp, "Expire", "Envelope expired");
			queue_envelope_delete(evpid);
			return;

		case IMSG_SCHED_ENVELOPE_BOUNCE:
			req_bounce = imsg->data;
			evpid = req_bounce->evpid;

			if (queue_envelope_load(evpid, &evp) == 0) {
				log_warnx("queue: bounce: failed to load envelope");
				m_create(p_scheduler, IMSG_QUEUE_ENVELOPE_REMOVE, 0, 0, -1);
				m_add_evpid(p_scheduler, evpid);
				m_add_u32(p_scheduler, 0); /* not in-flight */
				m_close(p_scheduler);
				return;
			}
			queue_bounce(&evp, &req_bounce->bounce);
			evp.lastbounce = req_bounce->timestamp;
			if (!queue_envelope_update(&evp))
				log_warnx("warn: could not update envelope %016"PRIx64, evpid);
			return;

		case IMSG_SCHED_ENVELOPE_DELIVER:
			m_msg(&m, imsg);
			m_get_evpid(&m, &evpid);
			m_end(&m);
			if (queue_envelope_load(evpid, &evp) == 0) {
				log_warnx("queue: deliver: failed to load envelope");
				m_create(p_scheduler, IMSG_QUEUE_ENVELOPE_REMOVE, 0, 0, -1);
				m_add_evpid(p_scheduler, evpid);
				m_add_u32(p_scheduler, 1); /* in-flight */
				m_close(p_scheduler);
				return;
			}
			evp.lasttry = time(NULL);
			m_create(p_pony, IMSG_QUEUE_DELIVER, 0, 0, -1);
			m_add_envelope(p_pony, &evp);
			m_close(p_pony);
			return;

		case IMSG_SCHED_ENVELOPE_INJECT:
			m_msg(&m, imsg);
			m_get_evpid(&m, &evpid);
			m_end(&m);
			bounce_add(evpid);
			return;

		case IMSG_SCHED_ENVELOPE_TRANSFER:
			m_msg(&m, imsg);
			m_get_evpid(&m, &evpid);
			m_end(&m);
			if (queue_envelope_load(evpid, &evp) == 0) {
				log_warnx("queue: failed to load envelope");
				m_create(p_scheduler, IMSG_QUEUE_ENVELOPE_REMOVE, 0, 0, -1);
				m_add_evpid(p_scheduler, evpid);
				m_add_u32(p_scheduler, 1); /* in-flight */
				m_close(p_scheduler);
				return;
			}
			evp.lasttry = time(NULL);
			m_create(p_pony, IMSG_QUEUE_TRANSFER, 0, 0, -1);
			m_add_envelope(p_pony, &evp);
			m_close(p_pony);
			return;

		case IMSG_CTL_LIST_ENVELOPES:
			if (imsg->hdr.len == sizeof imsg->hdr) {
				m_forward(p_control, imsg);
				return;
			}

			m_msg(&m, imsg);
			m_get_evpid(&m, &evpid);
			m_get_int(&m, &flags);
			m_get_time(&m, &nexttry);
			m_end(&m);

			if (queue_envelope_load(evpid, &evp) == 0)
				return; /* Envelope is gone, drop it */

			/*
			 * XXX consistency: The envelope might already be on
			 * its way back to the scheduler.  We need to detect
			 * this properly and report that state.
			 */
			evp.flags |= flags;
			/* In the past if running or runnable */
			evp.nexttry = nexttry;
			if (flags & EF_INFLIGHT) {
				/*
				 * Not exactly correct but pretty close: The
				 * value is not recorded on the envelope unless
				 * a tempfail occurs.
				 */
				evp.lasttry = nexttry;
			}
			m_compose(p_control, IMSG_CTL_LIST_ENVELOPES,
			    imsg->hdr.peerid, 0, -1, &evp, sizeof evp);
			return;
		}
	}

	if (p->proc == PROC_PONY) {
		switch (imsg->hdr.type) {
		case IMSG_MDA_OPEN_MESSAGE:
		case IMSG_MTA_OPEN_MESSAGE:
			m_msg(&m, imsg);
			m_get_id(&m, &reqid);
			m_get_msgid(&m, &msgid);
			m_end(&m);
			fd = queue_message_fd_r(msgid);
			m_create(p, imsg->hdr.type, 0, 0, fd);
			m_add_id(p, reqid);
			m_close(p);
			return;

		case IMSG_MDA_DELIVERY_OK:
		case IMSG_MTA_DELIVERY_OK:
			m_msg(&m, imsg);
			m_get_evpid(&m, &evpid);
			if (imsg->hdr.type == IMSG_MTA_DELIVERY_OK)
				m_get_int(&m, &mta_ext);
			m_end(&m);
			if (queue_envelope_load(evpid, &evp) == 0) {
				log_warn("queue: dsn: failed to load envelope");
				return;
			}
			if (evp.dsn_notify & DSN_SUCCESS) {
				bounce.type = B_DSN;
				bounce.dsn_ret = evp.dsn_ret;

				if (imsg->hdr.type == IMSG_MDA_DELIVERY_OK)
					queue_bounce(&evp, &bounce);
				else if (imsg->hdr.type == IMSG_MTA_DELIVERY_OK &&
				    (mta_ext & MTA_EXT_DSN) == 0) {
					bounce.mta_without_dsn = 1;
					queue_bounce(&evp, &bounce);
				}
			}
			queue_envelope_delete(evpid);
			m_create(p_scheduler, IMSG_QUEUE_DELIVERY_OK, 0, 0, -1);
			m_add_evpid(p_scheduler, evpid);
			m_close(p_scheduler);
			return;

		case IMSG_MDA_DELIVERY_TEMPFAIL:
		case IMSG_MTA_DELIVERY_TEMPFAIL:
			m_msg(&m, imsg);
			m_get_evpid(&m, &evpid);
			m_get_string(&m, &reason);
			m_get_int(&m, &code);
			m_end(&m);
			if (queue_envelope_load(evpid, &evp) == 0) {
				log_warnx("queue: tempfail: failed to load envelope");
				m_create(p_scheduler, IMSG_QUEUE_ENVELOPE_REMOVE, 0, 0, -1);
				m_add_evpid(p_scheduler, evpid);
				m_add_u32(p_scheduler, 1); /* in-flight */
				m_close(p_scheduler);
				return;
			}
			envelope_set_errormsg(&evp, "%s", reason);
			envelope_set_esc_class(&evp, ESC_STATUS_TEMPFAIL);
			envelope_set_esc_code(&evp, code);
			evp.retry++;
			if (!queue_envelope_update(&evp))
				log_warnx("warn: could not update envelope %016"PRIx64, evpid);
			m_create(p_scheduler, IMSG_QUEUE_DELIVERY_TEMPFAIL, 0, 0, -1);
			m_add_envelope(p_scheduler, &evp);
			m_close(p_scheduler);
			return;

		case IMSG_MDA_DELIVERY_PERMFAIL:
		case IMSG_MTA_DELIVERY_PERMFAIL:
			m_msg(&m, imsg);
			m_get_evpid(&m, &evpid);
			m_get_string(&m, &reason);
			m_get_int(&m, &code);
			m_end(&m);
			if (queue_envelope_load(evpid, &evp) == 0) {
				log_warnx("queue: permfail: failed to load envelope");
				m_create(p_scheduler, IMSG_QUEUE_ENVELOPE_REMOVE, 0, 0, -1);
				m_add_evpid(p_scheduler, evpid);
				m_add_u32(p_scheduler, 1); /* in-flight */
				m_close(p_scheduler);
				return;
			}
			bounce.type = B_ERROR;
			envelope_set_errormsg(&evp, "%s", reason);
			envelope_set_esc_class(&evp, ESC_STATUS_PERMFAIL);
			envelope_set_esc_code(&evp, code);
			queue_bounce(&evp, &bounce);
			queue_envelope_delete(evpid);
			m_create(p_scheduler, IMSG_QUEUE_DELIVERY_PERMFAIL, 0, 0, -1);
			m_add_evpid(p_scheduler, evpid);
			m_close(p_scheduler);
			return;

		case IMSG_MDA_DELIVERY_LOOP:
		case IMSG_MTA_DELIVERY_LOOP:
			m_msg(&m, imsg);
			m_get_evpid(&m, &evpid);
			m_end(&m);
			if (queue_envelope_load(evpid, &evp) == 0) {
				log_warnx("queue: loop: failed to load envelope");
				m_create(p_scheduler, IMSG_QUEUE_ENVELOPE_REMOVE, 0, 0, -1);
				m_add_evpid(p_scheduler, evpid);
				m_add_u32(p_scheduler, 1); /* in-flight */
				m_close(p_scheduler);
				return;
			}
			envelope_set_errormsg(&evp, "%s", "Loop detected");
			envelope_set_esc_class(&evp, ESC_STATUS_TEMPFAIL);
			envelope_set_esc_code(&evp, ESC_ROUTING_LOOP_DETECTED);
			bounce.type = B_ERROR;
			queue_bounce(&evp, &bounce);
			queue_envelope_delete(evp.id);
			m_create(p_scheduler, IMSG_QUEUE_DELIVERY_LOOP, 0, 0, -1);
			m_add_evpid(p_scheduler, evp.id);
			m_close(p_scheduler);
			return;

		case IMSG_MTA_DELIVERY_HOLD:
		case IMSG_MDA_DELIVERY_HOLD:
			imsg->hdr.type = IMSG_QUEUE_HOLDQ_HOLD;
			m_forward(p_scheduler, imsg);
			return;

		case IMSG_MTA_SCHEDULE:
			imsg->hdr.type = IMSG_QUEUE_ENVELOPE_SCHEDULE;
			m_forward(p_scheduler, imsg);
			return;

		case IMSG_MTA_HOLDQ_RELEASE:
		case IMSG_MDA_HOLDQ_RELEASE:
			m_msg(&m, imsg);
			m_get_id(&m, &holdq);
			m_get_int(&m, &v);
			m_end(&m);
			m_create(p_scheduler, IMSG_QUEUE_HOLDQ_RELEASE, 0, 0, -1);
			if (imsg->hdr.type == IMSG_MTA_HOLDQ_RELEASE)
				m_add_int(p_scheduler, D_MTA);
			else
				m_add_int(p_scheduler, D_MDA);
			m_add_id(p_scheduler, holdq);
			m_add_int(p_scheduler, v);
			m_close(p_scheduler);
			return;
		}
	}

	if (p->proc == PROC_CONTROL) {
		switch (imsg->hdr.type) {
		case IMSG_CTL_PAUSE_MDA:
		case IMSG_CTL_PAUSE_MTA:
		case IMSG_CTL_RESUME_MDA:
		case IMSG_CTL_RESUME_MTA:
			m_forward(p_scheduler, imsg);
			return;
		}
	}

	if (p->proc == PROC_PARENT) {
		switch (imsg->hdr.type) {
		case IMSG_CTL_VERBOSE:
			m_msg(&m, imsg);
			m_get_int(&m, &v);
			m_end(&m);
			log_verbose(v);
			m_forward(p_scheduler, imsg);
			return;

		case IMSG_CTL_PROFILE:
			m_msg(&m, imsg);
			m_get_int(&m, &v);
			m_end(&m);
			profiling = v;
			return;
		}
	}

	errx(1, "queue_imsg: unexpected %s imsg", imsg_to_str(imsg->hdr.type));
}
Example #6
0
/* ARGSUSED */
static void
control_dispatch_ext(struct mproc *p, struct imsg *imsg)
{
	struct sockaddr_storage	 ss;
	struct ctl_conn		*c;
	int			 v;
	struct stat_kv		*kvp;
	char			*key;
	struct stat_value	 val;
	size_t			 len;
	uint64_t		 evpid;
	uint32_t		 msgid;

	c = p->data;

	if (imsg == NULL) {
		control_close(c);
		return;
	}

	if (imsg->hdr.peerid != IMSG_VERSION) {
		m_compose(p, IMSG_CTL_FAIL, IMSG_VERSION, 0, -1, NULL, 0);
		return;
	}

	switch (imsg->hdr.type) {
	case IMSG_CTL_SMTP_SESSION:
		if (env->sc_flags & (SMTPD_SMTP_PAUSED | SMTPD_EXITING)) {
			m_compose(p, IMSG_CTL_FAIL, 0, 0, -1, NULL, 0);
			return;
		}
		m_compose(p_pony, IMSG_CTL_SMTP_SESSION, c->id, 0, -1,
		    &c->euid, sizeof(c->euid));
		return;

	case IMSG_CTL_GET_DIGEST:
		if (c->euid)
			goto badcred;
		digest.timestamp = time(NULL);
		m_compose(p, IMSG_CTL_GET_DIGEST, 0, 0, -1, &digest, sizeof digest);
		return;

	case IMSG_CTL_GET_STATS:
		if (c->euid)
			goto badcred;
		kvp = imsg->data;
		if (! stat_backend->iter(&kvp->iter, &key, &val))
			kvp->iter = NULL;
		else {
			(void)strlcpy(kvp->key, key, sizeof kvp->key);
			kvp->val = val;
		}
		m_compose(p, IMSG_CTL_GET_STATS, 0, 0, -1, kvp, sizeof *kvp);
		return;

	case IMSG_CTL_SHUTDOWN:
		/* NEEDS_FIX */
		log_debug("debug: received shutdown request");

		if (c->euid)
			goto badcred;

		if (env->sc_flags & SMTPD_EXITING) {
			m_compose(p, IMSG_CTL_FAIL, 0, 0, -1, NULL, 0);
			return;
		}
		env->sc_flags |= SMTPD_EXITING;
		m_compose(p, IMSG_CTL_OK, 0, 0, -1, NULL, 0);
		m_compose(p_parent, IMSG_CTL_SHUTDOWN, 0, 0, -1, NULL, 0);
		return;

	case IMSG_CTL_VERBOSE:
		if (c->euid)
			goto badcred;

		if (imsg->hdr.len - IMSG_HEADER_SIZE != sizeof(verbose))
			goto badcred;

		memcpy(&v, imsg->data, sizeof(v));
		verbose = v;
		log_verbose(verbose);

		control_broadcast_verbose(IMSG_CTL_VERBOSE, verbose);

		m_compose(p, IMSG_CTL_OK, 0, 0, -1, NULL, 0);
		return;

	case IMSG_CTL_TRACE_ENABLE:
		if (c->euid)
			goto badcred;

		if (imsg->hdr.len - IMSG_HEADER_SIZE != sizeof(verbose))
			goto badcred;

		memcpy(&v, imsg->data, sizeof(v));
		verbose |= v;
		log_verbose(verbose);

		control_broadcast_verbose(IMSG_CTL_VERBOSE, verbose);

		m_compose(p, IMSG_CTL_OK, 0, 0, -1, NULL, 0);
		return;

	case IMSG_CTL_TRACE_DISABLE:
		if (c->euid)
			goto badcred;

		if (imsg->hdr.len - IMSG_HEADER_SIZE != sizeof(verbose))
			goto badcred;

		memcpy(&v, imsg->data, sizeof(v));
		verbose &= ~v;
		log_verbose(verbose);

		control_broadcast_verbose(IMSG_CTL_VERBOSE, verbose);

		m_compose(p, IMSG_CTL_OK, 0, 0, -1, NULL, 0);
		return;

	case IMSG_CTL_PROFILE_ENABLE:
		if (c->euid)
			goto badcred;

		if (imsg->hdr.len - IMSG_HEADER_SIZE != sizeof(verbose))
			goto badcred;

		memcpy(&v, imsg->data, sizeof(v));
		profiling |= v;

		control_broadcast_verbose(IMSG_CTL_PROFILE, profiling);

		m_compose(p, IMSG_CTL_OK, 0, 0, -1, NULL, 0);
		return;

	case IMSG_CTL_PROFILE_DISABLE:
		if (c->euid)
			goto badcred;

		if (imsg->hdr.len - IMSG_HEADER_SIZE != sizeof(verbose))
			goto badcred;

		memcpy(&v, imsg->data, sizeof(v));
		profiling &= ~v;

		control_broadcast_verbose(IMSG_CTL_PROFILE, profiling);

		m_compose(p, IMSG_CTL_OK, 0, 0, -1, NULL, 0);
		return;

	case IMSG_CTL_PAUSE_EVP:
		if (c->euid)
			goto badcred;

		imsg->hdr.peerid = c->id;
		m_forward(p_scheduler, imsg);
		return;

	case IMSG_CTL_PAUSE_MDA:
		if (c->euid)
			goto badcred;

		if (env->sc_flags & SMTPD_MDA_PAUSED) {
			m_compose(p, IMSG_CTL_FAIL, 0, 0, -1, NULL, 0);
			return;
		}
		log_info("info: mda paused");
		env->sc_flags |= SMTPD_MDA_PAUSED;
		m_compose(p_queue, IMSG_CTL_PAUSE_MDA, 0, 0, -1, NULL, 0);
		m_compose(p, IMSG_CTL_OK, 0, 0, -1, NULL, 0);
		return;

	case IMSG_CTL_PAUSE_MTA:
		if (c->euid)
			goto badcred;

		if (env->sc_flags & SMTPD_MTA_PAUSED) {
			m_compose(p, IMSG_CTL_FAIL, 0, 0, -1, NULL, 0);
			return;
		}
		log_info("info: mta paused");
		env->sc_flags |= SMTPD_MTA_PAUSED;
		m_compose(p_queue, IMSG_CTL_PAUSE_MTA, 0, 0, -1, NULL, 0);
		m_compose(p, IMSG_CTL_OK, 0, 0, -1, NULL, 0);
		return;

	case IMSG_CTL_PAUSE_SMTP:
		if (c->euid)
			goto badcred;

		if (env->sc_flags & SMTPD_SMTP_PAUSED) {
			m_compose(p, IMSG_CTL_FAIL, 0, 0, -1, NULL, 0);
			return;
		}
		log_info("info: smtp paused");
		env->sc_flags |= SMTPD_SMTP_PAUSED;
		m_compose(p_pony, IMSG_CTL_PAUSE_SMTP, 0, 0, -1, NULL, 0);
		m_compose(p, IMSG_CTL_OK, 0, 0, -1, NULL, 0);
		return;

	case IMSG_CTL_RESUME_EVP:
		if (c->euid)
			goto badcred;

		imsg->hdr.peerid = c->id;
		m_forward(p_scheduler, imsg);
		return;

	case IMSG_CTL_RESUME_MDA:
		if (c->euid)
			goto badcred;

		if (! (env->sc_flags & SMTPD_MDA_PAUSED)) {
			m_compose(p, IMSG_CTL_FAIL, 0, 0, -1, NULL, 0);
			return;
		}
		log_info("info: mda resumed");
		env->sc_flags &= ~SMTPD_MDA_PAUSED;
		m_compose(p_queue, IMSG_CTL_RESUME_MDA, 0, 0, -1, NULL, 0);
		m_compose(p, IMSG_CTL_OK, 0, 0, -1, NULL, 0);
		return;

	case IMSG_CTL_RESUME_MTA:
		if (c->euid)
			goto badcred;

		if (!(env->sc_flags & SMTPD_MTA_PAUSED)) {
			m_compose(p, IMSG_CTL_FAIL, 0, 0, -1, NULL, 0);
			return;
		}
		log_info("info: mta resumed");
		env->sc_flags &= ~SMTPD_MTA_PAUSED;
		m_compose(p_queue, IMSG_CTL_RESUME_MTA, 0, 0, -1, NULL, 0);
		m_compose(p, IMSG_CTL_OK, 0, 0, -1, NULL, 0);
		return;

	case IMSG_CTL_RESUME_SMTP:
		if (c->euid)
			goto badcred;

		if (!(env->sc_flags & SMTPD_SMTP_PAUSED)) {
			m_compose(p, IMSG_CTL_FAIL, 0, 0, -1, NULL, 0);
			return;
		}
		log_info("info: smtp resumed");
		env->sc_flags &= ~SMTPD_SMTP_PAUSED;
		m_forward(p_pony, imsg);
		m_compose(p, IMSG_CTL_OK, 0, 0, -1, NULL, 0);
		return;

	case IMSG_CTL_RESUME_ROUTE:
		if (c->euid)
			goto badcred;

		m_forward(p_pony, imsg);
		m_compose(p, IMSG_CTL_OK, 0, 0, -1, NULL, 0);
		return;

	case IMSG_CTL_LIST_MESSAGES:
		if (c->euid)
			goto badcred;
		m_compose(p_scheduler, IMSG_CTL_LIST_MESSAGES, c->id, 0, -1,
		    imsg->data, imsg->hdr.len - sizeof(imsg->hdr));
		return;

	case IMSG_CTL_LIST_ENVELOPES:
		if (c->euid)
			goto badcred;
		m_compose(p_scheduler, IMSG_CTL_LIST_ENVELOPES, c->id, 0, -1,
		    imsg->data, imsg->hdr.len - sizeof(imsg->hdr));
		return;

	case IMSG_CTL_MTA_SHOW_HOSTS:
	case IMSG_CTL_MTA_SHOW_RELAYS:
	case IMSG_CTL_MTA_SHOW_ROUTES:
	case IMSG_CTL_MTA_SHOW_HOSTSTATS:
	case IMSG_CTL_MTA_SHOW_BLOCK:
		if (c->euid)
			goto badcred;

		imsg->hdr.peerid = c->id;
		m_forward(p_pony, imsg);
		return;

	case IMSG_CTL_SHOW_STATUS:
		if (c->euid)
			goto badcred;

		m_compose(p, IMSG_CTL_SHOW_STATUS, 0, 0, -1, &env->sc_flags,
		    sizeof(env->sc_flags));
		return;

	case IMSG_CTL_MTA_BLOCK:
	case IMSG_CTL_MTA_UNBLOCK:
		if (c->euid)
			goto badcred;

		if (imsg->hdr.len - IMSG_HEADER_SIZE <= sizeof(ss))
			goto invalid;
		memmove(&ss, imsg->data, sizeof(ss));
		m_create(p_pony, imsg->hdr.type, c->id, 0, -1);
		m_add_sockaddr(p_pony, (struct sockaddr *)&ss);
		m_add_string(p_pony, (char *)imsg->data + sizeof(ss));
		m_close(p_pony);
		return;

	case IMSG_CTL_SCHEDULE:
		if (c->euid)
			goto badcred;

		imsg->hdr.peerid = c->id;
		m_forward(p_scheduler, imsg);
		return;

	case IMSG_CTL_REMOVE:
		if (c->euid)
			goto badcred;

		imsg->hdr.peerid = c->id;
		m_forward(p_scheduler, imsg);
		return;

	case IMSG_CTL_UPDATE_TABLE:
		if (c->euid)
			goto badcred;

		/* table name too long */
		len = strlen(imsg->data);
		if (len >= LINE_MAX)
			goto invalid;

		m_forward(p_lka, imsg);
		m_compose(p, IMSG_CTL_OK, 0, 0, -1, NULL, 0);
		return;

	case IMSG_CTL_DISCOVER_EVPID:
		if (c->euid)
			goto badcred;

		if (imsg->hdr.len - IMSG_HEADER_SIZE != sizeof evpid)
			goto invalid;

		memmove(&evpid, imsg->data, sizeof evpid);
		m_create(p_queue, imsg->hdr.type, c->id, 0, -1);
		m_add_evpid(p_queue, evpid);
		m_close(p_queue);
		return;

	case IMSG_CTL_DISCOVER_MSGID:
	case IMSG_CTL_UNCORRUPT_MSGID:
		if (c->euid)
			goto badcred;

		if (imsg->hdr.len - IMSG_HEADER_SIZE != sizeof msgid)
			goto invalid;

		memmove(&msgid, imsg->data, sizeof msgid);
		m_create(p_queue, imsg->hdr.type, c->id, 0, -1);
		m_add_msgid(p_queue, msgid);
		m_close(p_queue);
		return;

	default:
		log_debug("debug: control_dispatch_ext: "
		    "error handling %s imsg",
		    imsg_to_str(imsg->hdr.type));
		return;
	}
badcred:
invalid:
	m_compose(p, IMSG_CTL_FAIL, 0, 0, -1, NULL, 0);
}