static void
mta_start_tls(struct mta_session *s)
{
struct ca_cert_req_msg req_ca_cert;
const char *certname;
if (s->relay->pki_name)
certname = s->relay->pki_name;
else
certname = s->helo;
req_ca_cert.reqid = s->id;
strlcpy(req_ca_cert.name, certname, sizeof req_ca_cert.name);
m_compose(p_lka, IMSG_LKA_SSL_INIT, 0, 0, -1,
&req_ca_cert, sizeof(req_ca_cert));
tree_xset(&wait_ssl_init, s->id, s);
s->flags |= MTA_WAIT;
return;
}
static void
queue_msgid_walk(int fd, short event, void *arg)
{
struct envelope evp;
struct timeval tv;
struct msg_walkinfo *wi = arg;
int r;
r = queue_message_walk(&evp, wi->msgid, &wi->done, &wi->data);
if (r == -1) {
if (wi->n_evp) {
m_create(p_scheduler, IMSG_QUEUE_DISCOVER_MSGID,
0, 0, -1);
m_add_msgid(p_scheduler, wi->msgid);
m_close(p_scheduler);
}
m_compose(p_control, IMSG_CTL_DISCOVER_MSGID, wi->peerid, 0, -1,
&wi->n_evp, sizeof wi->n_evp);
evtimer_del(&wi->ev);
free(wi);
return;
}
if (r) {
m_create(p_scheduler, IMSG_QUEUE_DISCOVER_EVPID, 0, 0, -1);
m_add_envelope(p_scheduler, &evp);
m_close(p_scheduler);
wi->n_evp += 1;
}
tv.tv_sec = 0;
tv.tv_usec = 10;
evtimer_set(&wi->ev, queue_msgid_walk, wi);
evtimer_add(&wi->ev, &tv);
}
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));
}
static void
control_imsg(struct mproc *p, struct imsg *imsg)
{
struct ctl_conn *c;
struct stat_value val;
struct msg m;
const char *key;
const void *data;
size_t sz;
if (p->proc == PROC_PONY) {
switch (imsg->hdr.type) {
case IMSG_CTL_SMTP_SESSION:
c = tree_get(&ctl_conns, imsg->hdr.peerid);
if (c == NULL)
return;
m_compose(&c->mproc, IMSG_CTL_OK, 0, 0, imsg->fd,
NULL, 0);
return;
}
}
if (p->proc == PROC_SCHEDULER) {
switch (imsg->hdr.type) {
case IMSG_CTL_OK:
case IMSG_CTL_FAIL:
case IMSG_CTL_LIST_MESSAGES:
c = tree_get(&ctl_conns, imsg->hdr.peerid);
if (c == NULL)
return;
imsg->hdr.peerid = 0;
m_forward(&c->mproc, imsg);
return;
}
}
if (p->proc == PROC_QUEUE) {
switch (imsg->hdr.type) {
case IMSG_CTL_LIST_ENVELOPES:
case IMSG_CTL_DISCOVER_EVPID:
case IMSG_CTL_DISCOVER_MSGID:
case IMSG_CTL_UNCORRUPT_MSGID:
c = tree_get(&ctl_conns, imsg->hdr.peerid);
if (c == NULL)
return;
m_forward(&c->mproc, imsg);
return;
}
}
if (p->proc == PROC_PONY) {
switch (imsg->hdr.type) {
case IMSG_CTL_OK:
case IMSG_CTL_FAIL:
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:
c = tree_get(&ctl_conns, imsg->hdr.peerid);
if (c == NULL)
return;
imsg->hdr.peerid = 0;
m_forward(&c->mproc, imsg);
return;
}
}
switch (imsg->hdr.type) {
case IMSG_STAT_INCREMENT:
m_msg(&m, imsg);
m_get_string(&m, &key);
m_get_data(&m, &data, &sz);
m_end(&m);
memmove(&val, data, sz);
if (stat_backend)
stat_backend->increment(key, val.u.counter);
control_digest_update(key, val.u.counter, 1);
return;
case IMSG_STAT_DECREMENT:
m_msg(&m, imsg);
m_get_string(&m, &key);
m_get_data(&m, &data, &sz);
m_end(&m);
memmove(&val, data, sz);
if (stat_backend)
stat_backend->decrement(key, val.u.counter);
control_digest_update(key, val.u.counter, 0);
return;
case IMSG_STAT_SET:
m_msg(&m, imsg);
m_get_string(&m, &key);
m_get_data(&m, &data, &sz);
m_end(&m);
memmove(&val, data, sz);
if (stat_backend)
stat_backend->set(key, &val);
return;
}
errx(1, "control_imsg: unexpected %s imsg",
imsg_to_str(imsg->hdr.type));
}
/* 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);
}
static int
mta_verify_certificate(struct mta_session *s)
{
struct ca_vrfy_req_msg req_ca_vrfy;
struct iovec iov[2];
X509 *x;
STACK_OF(X509) *xchain;
int i;
const char *pkiname;
x = SSL_get_peer_certificate(s->io.ssl);
if (x == NULL)
return 0;
xchain = SSL_get_peer_cert_chain(s->io.ssl);
/*
* Client provided a certificate and possibly a certificate chain.
* SMTP can't verify because it does not have the information that
* it needs, instead it will pass the certificate and chain to the
* lookup process and wait for a reply.
*
*/
tree_xset(&wait_ssl_verify, s->id, s);
s->flags |= MTA_WAIT;
/* Send the client certificate */
memset(&req_ca_vrfy, 0, sizeof req_ca_vrfy);
if (s->relay->pki_name)
pkiname = s->relay->pki_name;
else
pkiname = s->helo;
if (strlcpy(req_ca_vrfy.pkiname, pkiname, sizeof req_ca_vrfy.pkiname)
>= sizeof req_ca_vrfy.pkiname)
return 0;
req_ca_vrfy.reqid = s->id;
req_ca_vrfy.cert_len = i2d_X509(x, &req_ca_vrfy.cert);
if (xchain)
req_ca_vrfy.n_chain = sk_X509_num(xchain);
iov[0].iov_base = &req_ca_vrfy;
iov[0].iov_len = sizeof(req_ca_vrfy);
iov[1].iov_base = req_ca_vrfy.cert;
iov[1].iov_len = req_ca_vrfy.cert_len;
m_composev(p_lka, IMSG_LKA_SSL_VERIFY_CERT, 0, 0, -1,
iov, nitems(iov));
free(req_ca_vrfy.cert);
X509_free(x);
if (xchain) {
/* Send the chain, one cert at a time */
for (i = 0; i < sk_X509_num(xchain); ++i) {
memset(&req_ca_vrfy, 0, sizeof req_ca_vrfy);
req_ca_vrfy.reqid = s->id;
x = sk_X509_value(xchain, i);
req_ca_vrfy.cert_len = i2d_X509(x, &req_ca_vrfy.cert);
iov[0].iov_base = &req_ca_vrfy;
iov[0].iov_len = sizeof(req_ca_vrfy);
iov[1].iov_base = req_ca_vrfy.cert;
iov[1].iov_len = req_ca_vrfy.cert_len;
m_composev(p_lka, IMSG_LKA_SSL_VERIFY_CHAIN, 0, 0, -1,
iov, nitems(iov));
free(req_ca_vrfy.cert);
}
}
/* Tell lookup process that it can start verifying, we're done */
memset(&req_ca_vrfy, 0, sizeof req_ca_vrfy);
req_ca_vrfy.reqid = s->id;
m_compose(p_lka, IMSG_LKA_SSL_VERIFY, 0, 0, -1,
&req_ca_vrfy, sizeof req_ca_vrfy);
return 1;
}
static void
lka_imsg(struct mproc *p, struct imsg *imsg)
{
struct rule *rule;
struct table *table;
void *tmp;
int ret;
const char *key, *val;
struct ssl *ssl;
struct iovec iov[3];
static struct dict *ssl_dict;
static struct dict *tables_dict;
static struct table *table_last;
static struct ca_vrfy_req_msg *req_ca_vrfy_smtp = NULL;
static struct ca_vrfy_req_msg *req_ca_vrfy_mta = NULL;
struct ca_vrfy_req_msg *req_ca_vrfy_chain;
struct ca_vrfy_resp_msg resp_ca_vrfy;
struct ca_cert_req_msg *req_ca_cert;
struct ca_cert_resp_msg resp_ca_cert;
struct sockaddr_storage ss;
struct userinfo userinfo;
struct addrname addrname;
struct envelope evp;
struct msg m;
union lookup lk;
char buf[SMTPD_MAXLINESIZE];
const char *tablename, *username, *password, *label;
uint64_t reqid;
size_t i;
int v;
if (imsg->hdr.type == IMSG_DNS_HOST ||
imsg->hdr.type == IMSG_DNS_PTR ||
imsg->hdr.type == IMSG_DNS_MX ||
imsg->hdr.type == IMSG_DNS_MX_PREFERENCE) {
dns_imsg(p, imsg);
return;
}
if (p->proc == PROC_SMTP) {
switch (imsg->hdr.type) {
case IMSG_LKA_EXPAND_RCPT:
m_msg(&m, imsg);
m_get_id(&m, &reqid);
m_get_envelope(&m, &evp);
m_end(&m);
lka_session(reqid, &evp);
return;
case IMSG_LKA_SSL_INIT:
req_ca_cert = imsg->data;
resp_ca_cert.reqid = req_ca_cert->reqid;
ssl = dict_get(env->sc_ssl_dict, req_ca_cert->name);
if (ssl == NULL) {
resp_ca_cert.status = CA_FAIL;
m_compose(p, IMSG_LKA_SSL_INIT, 0, 0, -1, &resp_ca_cert,
sizeof(resp_ca_cert));
return;
}
resp_ca_cert.status = CA_OK;
resp_ca_cert.cert_len = ssl->ssl_cert_len;
resp_ca_cert.key_len = ssl->ssl_key_len;
iov[0].iov_base = &resp_ca_cert;
iov[0].iov_len = sizeof(resp_ca_cert);
iov[1].iov_base = ssl->ssl_cert;
iov[1].iov_len = ssl->ssl_cert_len;
iov[2].iov_base = ssl->ssl_key;
iov[2].iov_len = ssl->ssl_key_len;
m_composev(p, IMSG_LKA_SSL_INIT, 0, 0, -1, iov, nitems(iov));
return;
case IMSG_LKA_SSL_VERIFY_CERT:
req_ca_vrfy_smtp = xmemdup(imsg->data, sizeof *req_ca_vrfy_smtp, "lka:ca_vrfy");
if (req_ca_vrfy_smtp == NULL)
fatal(NULL);
req_ca_vrfy_smtp->cert = xmemdup((char *)imsg->data +
sizeof *req_ca_vrfy_smtp, req_ca_vrfy_smtp->cert_len, "lka:ca_vrfy");
req_ca_vrfy_smtp->chain_cert = xcalloc(req_ca_vrfy_smtp->n_chain,
sizeof (unsigned char *), "lka:ca_vrfy");
req_ca_vrfy_smtp->chain_cert_len = xcalloc(req_ca_vrfy_smtp->n_chain,
sizeof (off_t), "lka:ca_vrfy");
return;
case IMSG_LKA_SSL_VERIFY_CHAIN:
if (req_ca_vrfy_smtp == NULL)
fatalx("lka:ca_vrfy: chain without a certificate");
req_ca_vrfy_chain = imsg->data;
req_ca_vrfy_smtp->chain_cert[req_ca_vrfy_smtp->chain_offset] = xmemdup((char *)imsg->data +
sizeof *req_ca_vrfy_chain, req_ca_vrfy_chain->cert_len, "lka:ca_vrfy");
req_ca_vrfy_smtp->chain_cert_len[req_ca_vrfy_smtp->chain_offset] = req_ca_vrfy_chain->cert_len;
req_ca_vrfy_smtp->chain_offset++;
return;
case IMSG_LKA_SSL_VERIFY:
if (req_ca_vrfy_smtp == NULL)
fatalx("lka:ca_vrfy: verify without a certificate");
resp_ca_vrfy.reqid = req_ca_vrfy_smtp->reqid;
if (! lka_X509_verify(req_ca_vrfy_smtp, CA_FILE, NULL))
resp_ca_vrfy.status = CA_FAIL;
else
resp_ca_vrfy.status = CA_OK;
m_compose(p, IMSG_LKA_SSL_VERIFY, 0, 0, -1, &resp_ca_vrfy,
sizeof resp_ca_vrfy);
for (i = 0; i < req_ca_vrfy_smtp->n_chain; ++i)
free(req_ca_vrfy_smtp->chain_cert[i]);
free(req_ca_vrfy_smtp->chain_cert);
free(req_ca_vrfy_smtp->chain_cert_len);
free(req_ca_vrfy_smtp->cert);
free(req_ca_vrfy_smtp);
return;
case IMSG_LKA_AUTHENTICATE:
m_msg(&m, imsg);
m_get_id(&m, &reqid);
m_get_string(&m, &tablename);
m_get_string(&m, &username);
m_get_string(&m, &password);
m_end(&m);
if (!tablename[0]) {
m_create(p_parent, IMSG_LKA_AUTHENTICATE,
0, 0, -1);
m_add_id(p_parent, reqid);
m_add_string(p_parent, username);
m_add_string(p_parent, password);
m_close(p_parent);
return;
}
ret = lka_authenticate(tablename, username, password);
m_create(p, IMSG_LKA_AUTHENTICATE, 0, 0, -1);
m_add_id(p, reqid);
m_add_int(p, ret);
m_close(p);
return;
}
}
if (p->proc == PROC_MDA) {
switch (imsg->hdr.type) {
case IMSG_LKA_USERINFO:
m_msg(&m, imsg);
m_get_string(&m, &tablename);
m_get_string(&m, &username);
m_end(&m);
ret = lka_userinfo(tablename, username, &userinfo);
m_create(p, IMSG_LKA_USERINFO, 0, 0, -1);
m_add_string(p, tablename);
m_add_string(p, username);
m_add_int(p, ret);
if (ret == LKA_OK)
m_add_data(p, &userinfo, sizeof(userinfo));
m_close(p);
return;
}
}
if (p->proc == PROC_MTA) {
switch (imsg->hdr.type) {
case IMSG_LKA_SSL_INIT:
req_ca_cert = imsg->data;
resp_ca_cert.reqid = req_ca_cert->reqid;
ssl = dict_get(env->sc_ssl_dict, req_ca_cert->name);
if (ssl == NULL) {
resp_ca_cert.status = CA_FAIL;
m_compose(p, IMSG_LKA_SSL_INIT, 0, 0, -1, &resp_ca_cert,
sizeof(resp_ca_cert));
return;
}
resp_ca_cert.status = CA_OK;
resp_ca_cert.cert_len = ssl->ssl_cert_len;
resp_ca_cert.key_len = ssl->ssl_key_len;
iov[0].iov_base = &resp_ca_cert;
iov[0].iov_len = sizeof(resp_ca_cert);
iov[1].iov_base = ssl->ssl_cert;
iov[1].iov_len = ssl->ssl_cert_len;
iov[2].iov_base = ssl->ssl_key;
iov[2].iov_len = ssl->ssl_key_len;
m_composev(p, IMSG_LKA_SSL_INIT, 0, 0, -1, iov, nitems(iov));
return;
case IMSG_LKA_SSL_VERIFY_CERT:
req_ca_vrfy_mta = xmemdup(imsg->data, sizeof *req_ca_vrfy_mta, "lka:ca_vrfy");
if (req_ca_vrfy_mta == NULL)
fatal(NULL);
req_ca_vrfy_mta->cert = xmemdup((char *)imsg->data +
sizeof *req_ca_vrfy_mta, req_ca_vrfy_mta->cert_len, "lka:ca_vrfy");
req_ca_vrfy_mta->chain_cert = xcalloc(req_ca_vrfy_mta->n_chain,
sizeof (unsigned char *), "lka:ca_vrfy");
req_ca_vrfy_mta->chain_cert_len = xcalloc(req_ca_vrfy_mta->n_chain,
sizeof (off_t), "lka:ca_vrfy");
return;
case IMSG_LKA_SSL_VERIFY_CHAIN:
if (req_ca_vrfy_mta == NULL)
fatalx("lka:ca_vrfy: verify without a certificate");
req_ca_vrfy_chain = imsg->data;
req_ca_vrfy_mta->chain_cert[req_ca_vrfy_mta->chain_offset] = xmemdup((char *)imsg->data +
sizeof *req_ca_vrfy_chain, req_ca_vrfy_chain->cert_len, "lka:ca_vrfy");
req_ca_vrfy_mta->chain_cert_len[req_ca_vrfy_mta->chain_offset] = req_ca_vrfy_chain->cert_len;
req_ca_vrfy_mta->chain_offset++;
return;
case IMSG_LKA_SSL_VERIFY:
if (req_ca_vrfy_mta == NULL)
fatalx("lka:ca_vrfy: verify without a certificate");
resp_ca_vrfy.reqid = req_ca_vrfy_mta->reqid;
if (! lka_X509_verify(req_ca_vrfy_mta, CA_FILE, NULL))
resp_ca_vrfy.status = CA_FAIL;
else
resp_ca_vrfy.status = CA_OK;
m_compose(p, IMSG_LKA_SSL_VERIFY, 0, 0, -1, &resp_ca_vrfy,
sizeof resp_ca_vrfy);
for (i = 0; i < req_ca_vrfy_mta->n_chain; ++i)
free(req_ca_vrfy_mta->chain_cert[i]);
free(req_ca_vrfy_mta->chain_cert);
free(req_ca_vrfy_mta->chain_cert_len);
free(req_ca_vrfy_mta->cert);
free(req_ca_vrfy_mta);
return;
case IMSG_LKA_SECRET:
m_msg(&m, imsg);
m_get_id(&m, &reqid);
m_get_string(&m, &tablename);
m_get_string(&m, &label);
m_end(&m);
lka_credentials(tablename, label, buf, sizeof(buf));
m_create(p, IMSG_LKA_SECRET, 0, 0, -1);
m_add_id(p, reqid);
m_add_string(p, buf);
m_close(p);
return;
case IMSG_LKA_SOURCE:
m_msg(&m, imsg);
m_get_id(&m, &reqid);
m_get_string(&m, &tablename);
table = table_find(tablename, NULL);
m_create(p, IMSG_LKA_SOURCE, 0, 0, -1);
m_add_id(p, reqid);
if (table == NULL) {
log_warn("warn: source address table %s missing",
tablename);
m_add_int(p, LKA_TEMPFAIL);
}
else {
ret = table_fetch(table, K_SOURCE, &lk);
if (ret == -1)
m_add_int(p, LKA_TEMPFAIL);
else if (ret == 0)
m_add_int(p, LKA_PERMFAIL);
else {
m_add_int(p, LKA_OK);
m_add_sockaddr(p,
(struct sockaddr *)&lk.source.addr);
}
}
m_close(p);
return;
case IMSG_LKA_HELO:
m_msg(&m, imsg);
m_get_id(&m, &reqid);
m_get_string(&m, &tablename);
m_get_sockaddr(&m, (struct sockaddr *)&ss);
m_end(&m);
ret = lka_addrname(tablename, (struct sockaddr*)&ss,
&addrname);
m_create(p, IMSG_LKA_HELO, 0, 0, -1);
m_add_id(p, reqid);
m_add_int(p, ret);
if (ret == LKA_OK)
m_add_string(p, addrname.name);
m_close(p);
return;
}
}
if (p->proc == PROC_PARENT) {
switch (imsg->hdr.type) {
case IMSG_CONF_START:
env->sc_rules_reload = xcalloc(1,
sizeof *env->sc_rules, "lka:sc_rules_reload");
tables_dict = xcalloc(1,
sizeof *tables_dict, "lka:tables_dict");
ssl_dict = calloc(1, sizeof *ssl_dict);
if (ssl_dict == NULL)
fatal(NULL);
dict_init(ssl_dict);
dict_init(tables_dict);
TAILQ_INIT(env->sc_rules_reload);
return;
case IMSG_CONF_SSL:
ssl = calloc(1, sizeof *ssl);
if (ssl == NULL)
fatal(NULL);
*ssl = *(struct ssl *)imsg->data;
ssl->ssl_cert = xstrdup((char *)imsg->data +
sizeof *ssl, "smtp:ssl_cert");
ssl->ssl_key = xstrdup((char *)imsg->data +
sizeof *ssl + ssl->ssl_cert_len, "smtp:ssl_key");
if (ssl->ssl_dhparams_len) {
ssl->ssl_dhparams = xstrdup((char *)imsg->data
+ sizeof *ssl + ssl->ssl_cert_len +
ssl->ssl_key_len, "smtp:ssl_dhparams");
}
if (ssl->ssl_ca_len) {
ssl->ssl_ca = xstrdup((char *)imsg->data
+ sizeof *ssl + ssl->ssl_cert_len +
ssl->ssl_key_len + ssl->ssl_dhparams_len,
"smtp:ssl_ca");
}
dict_set(ssl_dict, ssl->ssl_name, ssl);
return;
case IMSG_CONF_RULE:
rule = xmemdup(imsg->data, sizeof *rule, "lka:rule");
TAILQ_INSERT_TAIL(env->sc_rules_reload, rule, r_entry);
return;
case IMSG_CONF_TABLE:
table_last = table = xmemdup(imsg->data, sizeof *table,
"lka:table");
dict_init(&table->t_dict);
dict_set(tables_dict, table->t_name, table);
return;
case IMSG_CONF_RULE_SOURCE:
rule = TAILQ_LAST(env->sc_rules_reload, rulelist);
tmp = env->sc_tables_dict;
env->sc_tables_dict = tables_dict;
rule->r_sources = table_find(imsg->data, NULL);
if (rule->r_sources == NULL)
fatalx("lka: tables inconsistency");
env->sc_tables_dict = tmp;
return;
case IMSG_CONF_RULE_SENDER:
rule = TAILQ_LAST(env->sc_rules_reload, rulelist);
tmp = env->sc_tables_dict;
env->sc_tables_dict = tables_dict;
rule->r_senders = table_find(imsg->data, NULL);
if (rule->r_senders == NULL)
fatalx("lka: tables inconsistency");
env->sc_tables_dict = tmp;
return;
case IMSG_CONF_RULE_DESTINATION:
rule = TAILQ_LAST(env->sc_rules_reload, rulelist);
tmp = env->sc_tables_dict;
env->sc_tables_dict = tables_dict;
rule->r_destination = table_find(imsg->data, NULL);
if (rule->r_destination == NULL)
fatalx("lka: tables inconsistency");
env->sc_tables_dict = tmp;
return;
case IMSG_CONF_RULE_MAPPING:
rule = TAILQ_LAST(env->sc_rules_reload, rulelist);
tmp = env->sc_tables_dict;
env->sc_tables_dict = tables_dict;
rule->r_mapping = table_find(imsg->data, NULL);
if (rule->r_mapping == NULL)
fatalx("lka: tables inconsistency");
env->sc_tables_dict = tmp;
return;
case IMSG_CONF_RULE_USERS:
rule = TAILQ_LAST(env->sc_rules_reload, rulelist);
tmp = env->sc_tables_dict;
env->sc_tables_dict = tables_dict;
rule->r_userbase = table_find(imsg->data, NULL);
if (rule->r_userbase == NULL)
fatalx("lka: tables inconsistency");
env->sc_tables_dict = tmp;
return;
case IMSG_CONF_TABLE_CONTENT:
table = table_last;
if (table == NULL)
fatalx("lka: tables inconsistency");
key = imsg->data;
if (table->t_type == T_HASH)
val = key + strlen(key) + 1;
else
val = NULL;
dict_set(&table->t_dict, key,
val ? xstrdup(val, "lka:dict_set") : NULL);
return;
case IMSG_CONF_END:
if (env->sc_rules)
purge_config(PURGE_RULES);
if (env->sc_tables_dict) {
table_close_all();
purge_config(PURGE_TABLES);
}
env->sc_rules = env->sc_rules_reload;
env->sc_ssl_dict = ssl_dict;
env->sc_tables_dict = tables_dict;
if (verbose & TRACE_TABLES)
table_dump_all();
table_open_all();
ssl_dict = NULL;
table_last = NULL;
tables_dict = NULL;
/* Start fulfilling requests */
mproc_enable(p_mda);
mproc_enable(p_mta);
mproc_enable(p_smtp);
return;
case IMSG_CTL_VERBOSE:
m_msg(&m, imsg);
m_get_int(&m, &v);
m_end(&m);
log_verbose(v);
return;
case IMSG_CTL_PROFILE:
m_msg(&m, imsg);
m_get_int(&m, &v);
m_end(&m);
profiling = v;
return;
case IMSG_PARENT_FORWARD_OPEN:
lka_session_forward_reply(imsg->data, imsg->fd);
return;
case IMSG_LKA_AUTHENTICATE:
m_forward(p_smtp, imsg);
return;
}
}
if (p->proc == PROC_CONTROL) {
switch (imsg->hdr.type) {
case IMSG_LKA_UPDATE_TABLE:
table = table_find(imsg->data, NULL);
if (table == NULL) {
log_warnx("warn: Lookup table not found: "
"\"%s\"", (char *)imsg->data);
return;
}
table_update(table);
return;
}
}
errx(1, "lka_imsg: unexpected %s imsg", imsg_to_str(imsg->hdr.type));
}
static void
lka_expand(struct lka_session *lks, struct rule *rule, struct expandnode *xn)
{
struct forward_req fwreq;
struct envelope ep;
struct expandnode node;
struct mailaddr maddr;
int r;
union lookup lk;
if (xn->depth >= EXPAND_DEPTH) {
log_trace(TRACE_EXPAND, "expand: lka_expand: node too deep.");
lks->error = LKA_PERMFAIL;
return;
}
switch (xn->type) {
case EXPAND_INVALID:
case EXPAND_INCLUDE:
fatalx("lka_expand: unexpected type");
break;
case EXPAND_ADDRESS:
log_trace(TRACE_EXPAND, "expand: lka_expand: address: %s@%s "
"[depth=%d]",
xn->u.mailaddr.user, xn->u.mailaddr.domain, xn->depth);
/* Pass the node through the ruleset */
ep = lks->envelope;
ep.dest = xn->u.mailaddr;
if (xn->parent) /* nodes with parent are forward addresses */
ep.flags |= EF_INTERNAL;
rule = ruleset_match(&ep);
if (rule == NULL || rule->r_decision == R_REJECT) {
lks->error = (errno == EAGAIN) ?
LKA_TEMPFAIL : LKA_PERMFAIL;
break;
}
xn->mapping = rule->r_mapping;
xn->userbase = rule->r_userbase;
if (rule->r_action == A_RELAY || rule->r_action == A_RELAYVIA) {
lka_submit(lks, rule, xn);
}
else if (rule->r_desttype == DEST_VDOM) {
/* expand */
lks->expand.rule = rule;
lks->expand.parent = xn;
lks->expand.alias = 1;
/* temporary replace the mailaddr with a copy where
* we eventually strip the '+'-part before lookup.
*/
maddr = xn->u.mailaddr;
mailaddr_to_username(&xn->u.mailaddr, maddr.user,
sizeof maddr.user);
r = aliases_virtual_get(&lks->expand, &maddr);
if (r == -1) {
lks->error = LKA_TEMPFAIL;
log_trace(TRACE_EXPAND, "expand: lka_expand: "
"error in virtual alias lookup");
}
else if (r == 0) {
lks->error = LKA_PERMFAIL;
log_trace(TRACE_EXPAND, "expand: lka_expand: "
"no aliases for virtual");
}
}
else {
lks->expand.rule = rule;
lks->expand.parent = xn;
lks->expand.alias = 1;
bzero(&node, sizeof node);
node.type = EXPAND_USERNAME;
mailaddr_to_username(&xn->u.mailaddr, node.u.user,
sizeof node.u.user);
node.mapping = rule->r_mapping;
node.userbase = rule->r_userbase;
expand_insert(&lks->expand, &node);
}
break;
case EXPAND_USERNAME:
log_trace(TRACE_EXPAND, "expand: lka_expand: username: %s "
"[depth=%d]", xn->u.user, xn->depth);
if (xn->sameuser) {
log_trace(TRACE_EXPAND, "expand: lka_expand: same "
"user, submitting");
lka_submit(lks, rule, xn);
break;
}
/* expand aliases with the given rule */
lks->expand.rule = rule;
lks->expand.parent = xn;
lks->expand.alias = 1;
xn->mapping = rule->r_mapping;
xn->userbase = rule->r_userbase;
if (rule->r_mapping) {
r = aliases_get(&lks->expand, xn->u.user);
if (r == -1) {
log_trace(TRACE_EXPAND, "expand: lka_expand: "
"error in alias lookup");
lks->error = LKA_TEMPFAIL;
}
if (r)
break;
}
/* A username should not exceed the size of a system user */
if (strlen(xn->u.user) >= sizeof fwreq.user) {
log_trace(TRACE_EXPAND, "expand: lka_expand: "
"user-part too long to be a system user");
lks->error = LKA_PERMFAIL;
break;
}
r = table_lookup(rule->r_userbase, xn->u.user, K_USERINFO, &lk);
if (r == -1) {
log_trace(TRACE_EXPAND, "expand: lka_expand: "
"backend error while searching user");
lks->error = LKA_TEMPFAIL;
break;
}
if (r == 0) {
log_trace(TRACE_EXPAND, "expand: lka_expand: "
"user-part does not match system user");
lks->error = LKA_PERMFAIL;
break;
}
/* no aliases found, query forward file */
lks->rule = rule;
lks->node = xn;
fwreq.id = lks->id;
(void)strlcpy(fwreq.user, lk.userinfo.username, sizeof(fwreq.user));
(void)strlcpy(fwreq.directory, lk.userinfo.directory, sizeof(fwreq.directory));
fwreq.uid = lk.userinfo.uid;
fwreq.gid = lk.userinfo.gid;
m_compose(p_parent, IMSG_PARENT_FORWARD_OPEN, 0, 0, -1,
&fwreq, sizeof(fwreq));
lks->flags |= F_WAITING;
break;
case EXPAND_FILENAME:
log_trace(TRACE_EXPAND, "expand: lka_expand: filename: %s "
"[depth=%d]", xn->u.buffer, xn->depth);
lka_submit(lks, rule, xn);
break;
case EXPAND_ERROR:
log_trace(TRACE_EXPAND, "expand: lka_expand: error: %s "
"[depth=%d]", xn->u.buffer, xn->depth);
if (xn->u.buffer[0] == '4')
lks->error = LKA_TEMPFAIL;
else if (xn->u.buffer[0] == '5')
lks->error = LKA_PERMFAIL;
lks->errormsg = xn->u.buffer;
break;
case EXPAND_FILTER:
log_trace(TRACE_EXPAND, "expand: lka_expand: filter: %s "
"[depth=%d]", xn->u.buffer, xn->depth);
lka_submit(lks, rule, xn);
break;
}
}
/* ARGSUSED */
static void
control_dispatch_ext(struct mproc *p, struct imsg *imsg)
{
struct ctl_conn *c;
int v;
struct stat_kv *kvp;
char *key;
struct stat_value val;
size_t len;
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_SMTP_ENQUEUE_FD:
if (env->sc_flags & (SMTPD_SMTP_PAUSED | SMTPD_EXITING)) {
m_compose(p, IMSG_CTL_FAIL, 0, 0, -1, NULL, 0);
return;
}
m_compose(p_smtp, IMSG_SMTP_ENQUEUE_FD, c->id, 0, -1,
&c->euid, sizeof(c->euid));
return;
case IMSG_STATS:
if (c->euid)
goto badcred;
m_compose(p, IMSG_STATS, 0, 0, -1, NULL, 0);
return;
case IMSG_DIGEST:
if (c->euid)
goto badcred;
digest.timestamp = time(NULL);
m_compose(p, IMSG_DIGEST, 0, 0, -1, &digest, sizeof digest);
return;
case IMSG_STATS_GET:
if (c->euid)
goto badcred;
kvp = imsg->data;
if (! stat_backend->iter(&kvp->iter, &key, &val))
kvp->iter = NULL;
else {
strlcpy(kvp->key, key, sizeof kvp->key);
kvp->val = val;
}
m_compose(p, IMSG_STATS_GET, 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);
m_create(p_parent, IMSG_CTL_VERBOSE, 0, 0, -1);
m_add_int(p_parent, verbose);
m_close(p_parent);
m_compose(p, IMSG_CTL_OK, 0, 0, -1, NULL, 0);
return;
case IMSG_CTL_TRACE:
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);
m_create(p_parent, IMSG_CTL_TRACE, 0, 0, -1);
m_add_int(p_parent, v);
m_close(p_parent);
m_compose(p, IMSG_CTL_OK, 0, 0, -1, NULL, 0);
return;
case IMSG_CTL_UNTRACE:
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);
m_create(p_parent, IMSG_CTL_UNTRACE, 0, 0, -1);
m_add_int(p_parent, v);
m_close(p_parent);
m_compose(p, IMSG_CTL_OK, 0, 0, -1, NULL, 0);
return;
case IMSG_CTL_PROFILE:
if (c->euid)
goto badcred;
if (imsg->hdr.len - IMSG_HEADER_SIZE != sizeof(verbose))
goto badcred;
memcpy(&v, imsg->data, sizeof(v));
profiling |= v;
m_create(p_parent, IMSG_CTL_PROFILE, 0, 0, -1);
m_add_int(p_parent, v);
m_close(p_parent);
m_compose(p, IMSG_CTL_OK, 0, 0, -1, NULL, 0);
return;
case IMSG_CTL_UNPROFILE:
if (c->euid)
goto badcred;
if (imsg->hdr.len - IMSG_HEADER_SIZE != sizeof(verbose))
goto badcred;
memcpy(&v, imsg->data, sizeof(v));
profiling &= ~v;
m_create(p_parent, IMSG_CTL_UNPROFILE, 0, 0, -1);
m_add_int(p_parent, v);
m_close(p_parent);
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_smtp, 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_smtp, 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_mta, 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:
if (c->euid)
goto badcred;
imsg->hdr.peerid = c->id;
m_forward(p_mta, imsg);
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_LKA_UPDATE_TABLE:
if (c->euid)
goto badcred;
/* table name too long */
len = strlen(imsg->data);
if (len >= SMTPD_MAXLINESIZE)
goto invalid;
m_forward(p_lka, imsg);
m_compose(p, IMSG_CTL_OK, 0, 0, -1, NULL, 0);
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);
}
static int
mta_verify_certificate(struct mta_session *s)
{
#define MAX_CERTS 16
#define MAX_CERT_LEN (MAX_IMSGSIZE - (IMSG_HEADER_SIZE + sizeof(req_ca_vrfy)))
struct ca_vrfy_req_msg req_ca_vrfy;
struct iovec iov[2];
X509 *x;
STACK_OF(X509) *xchain;
const char *name;
unsigned char *cert_der[MAX_CERTS];
int cert_len[MAX_CERTS];
int i, cert_count, res;
res = 0;
memset(cert_der, 0, sizeof(cert_der));
memset(&req_ca_vrfy, 0, sizeof req_ca_vrfy);
/* Send the client certificate */
if (s->relay->ca_name) {
name = s->relay->ca_name;
req_ca_vrfy.fallback = 0;
}
else {
name = s->helo;
req_ca_vrfy.fallback = 1;
}
if (strlcpy(req_ca_vrfy.name, name, sizeof req_ca_vrfy.name)
>= sizeof req_ca_vrfy.name)
return 0;
x = SSL_get_peer_certificate(s->io.ssl);
if (x == NULL)
return 0;
xchain = SSL_get_peer_cert_chain(s->io.ssl);
/*
* Client provided a certificate and possibly a certificate chain.
* SMTP can't verify because it does not have the information that
* it needs, instead it will pass the certificate and chain to the
* lookup process and wait for a reply.
*
*/
cert_len[0] = i2d_X509(x, &cert_der[0]);
X509_free(x);
if (cert_len[0] < 0) {
log_warnx("warn: failed to encode certificate");
goto end;
}
log_debug("debug: certificate 0: len=%d", cert_len[0]);
if (cert_len[0] > (int)MAX_CERT_LEN) {
log_warnx("warn: certificate too long");
goto end;
}
if (xchain) {
cert_count = sk_X509_num(xchain);
log_debug("debug: certificate chain len: %d", cert_count);
if (cert_count >= MAX_CERTS) {
log_warnx("warn: certificate chain too long");
goto end;
}
}
else
cert_count = 0;
for (i = 0; i < cert_count; ++i) {
x = sk_X509_value(xchain, i);
cert_len[i+1] = i2d_X509(x, &cert_der[i+1]);
if (cert_len[i+1] < 0) {
log_warnx("warn: failed to encode certificate");
goto end;
}
log_debug("debug: certificate %i: len=%d", i+1, cert_len[i+1]);
if (cert_len[i+1] > (int)MAX_CERT_LEN) {
log_warnx("warn: certificate too long");
goto end;
}
}
tree_xset(&wait_ssl_verify, s->id, s);
s->flags |= MTA_WAIT;
/* Send the client certificate */
req_ca_vrfy.reqid = s->id;
req_ca_vrfy.cert_len = cert_len[0];
req_ca_vrfy.n_chain = cert_count;
iov[0].iov_base = &req_ca_vrfy;
iov[0].iov_len = sizeof(req_ca_vrfy);
iov[1].iov_base = cert_der[0];
iov[1].iov_len = cert_len[0];
m_composev(p_lka, IMSG_MTA_TLS_VERIFY_CERT, 0, 0, -1,
iov, nitems(iov));
memset(&req_ca_vrfy, 0, sizeof req_ca_vrfy);
req_ca_vrfy.reqid = s->id;
/* Send the chain, one cert at a time */
for (i = 0; i < cert_count; ++i) {
req_ca_vrfy.cert_len = cert_len[i+1];
iov[1].iov_base = cert_der[i+1];
iov[1].iov_len = cert_len[i+1];
m_composev(p_lka, IMSG_MTA_TLS_VERIFY_CHAIN, 0, 0, -1,
iov, nitems(iov));
}
/* Tell lookup process that it can start verifying, we're done */
memset(&req_ca_vrfy, 0, sizeof req_ca_vrfy);
req_ca_vrfy.reqid = s->id;
m_compose(p_lka, IMSG_MTA_TLS_VERIFY, 0, 0, -1,
&req_ca_vrfy, sizeof req_ca_vrfy);
res = 1;
end:
for (i = 0; i < MAX_CERTS; ++i)
free(cert_der[i]);
return res;
}