static void
dns_dispatch_host(struct asr_result *ar, void *arg)
{
struct dns_session *s;
struct dns_lookup *lookup = arg;
struct addrinfo *ai;
s = lookup->session;
for (ai = ar->ar_addrinfo; ai; ai = ai->ai_next) {
s->mxfound++;
m_create(s->p, IMSG_MTA_DNS_HOST, 0, 0, -1);
m_add_id(s->p, s->reqid);
m_add_sockaddr(s->p, ai->ai_addr);
m_add_int(s->p, lookup->preference);
m_close(s->p);
}
free(lookup);
if (ar->ar_addrinfo)
asr_freeaddrinfo(ar->ar_addrinfo);
if (ar->ar_gai_errno)
s->error = ar->ar_gai_errno;
if (--s->refcount)
return;
m_create(s->p, IMSG_MTA_DNS_HOST_END, 0, 0, -1);
m_add_id(s->p, s->reqid);
m_add_int(s->p, s->mxfound ? DNS_OK : DNS_ENOTFOUND);
m_close(s->p);
free(s);
}
static void
filter_send_response(struct filter_session *s)
{
log_trace(TRACE_FILTERS, "filter-api:%s %016"PRIx64" %s filter_send_response() -> %d, %d, %s",
filter_name, s->id, query_to_str(s->qtype),
s->response.status,
s->response.code,
s->response.line);
tree_xpop(&queries, s->qid);
m_create(&fi.p, IMSG_FILTER_RESPONSE, 0, 0, -1);
m_add_id(&fi.p, s->qid);
m_add_int(&fi.p, s->qtype);
if (s->qtype == QUERY_EOM)
m_add_u32(&fi.p, s->datalen);
m_add_int(&fi.p, s->response.status);
m_add_int(&fi.p, s->response.code);
if (s->response.line) {
m_add_string(&fi.p, s->response.line);
free(s->response.line);
s->response.line = NULL;
}
m_close(&fi.p);
s->qid = 0;
s->response.ready = 0;
}
static void
dns_dispatch_mx_preference(struct asr_result *ar, void *arg)
{
struct dns_session *s = arg;
struct unpack pack;
struct dns_header h;
struct dns_query q;
struct dns_rr rr;
char buf[512];
int error;
if (ar->ar_h_errno) {
if (ar->ar_rcode == NXDOMAIN)
error = DNS_ENONAME;
else if (ar->ar_h_errno == NO_RECOVERY
|| ar->ar_h_errno == NO_DATA)
error = DNS_EINVAL;
else
error = DNS_RETRY;
}
else {
error = DNS_ENOTFOUND;
unpack_init(&pack, ar->ar_data, ar->ar_datalen);
if (unpack_header(&pack, &h) != -1 &&
unpack_query(&pack, &q) != -1) {
for (; h.ancount; h.ancount--) {
if (unpack_rr(&pack, &rr) == -1)
break;
if (rr.rr_type != T_MX)
continue;
print_dname(rr.rr.mx.exchange, buf, sizeof(buf));
buf[strlen(buf) - 1] = '\0';
if (!strcasecmp(s->name, buf)) {
error = DNS_OK;
break;
}
}
}
}
free(ar->ar_data);
m_create(s->p, IMSG_MTA_DNS_MX_PREFERENCE, 0, 0, -1);
m_add_id(s->p, s->reqid);
m_add_int(s->p, error);
if (error == DNS_OK)
m_add_int(s->p, rr.rr.mx.preference);
m_close(s->p);
free(s);
}
static void
dns_dispatch_mx(struct asr_result *ar, void *arg)
{
struct dns_session *s = arg;
struct unpack pack;
struct dns_header h;
struct dns_query q;
struct dns_rr rr;
char buf[512];
size_t found;
if (ar->ar_h_errno && ar->ar_h_errno != NO_DATA) {
m_create(s->p, IMSG_MTA_DNS_HOST_END, 0, 0, -1);
m_add_id(s->p, s->reqid);
if (ar->ar_rcode == NXDOMAIN)
m_add_int(s->p, DNS_ENONAME);
else if (ar->ar_h_errno == NO_RECOVERY)
m_add_int(s->p, DNS_EINVAL);
else
m_add_int(s->p, DNS_RETRY);
m_close(s->p);
free(s);
free(ar->ar_data);
return;
}
found = 0;
unpack_init(&pack, ar->ar_data, ar->ar_datalen);
if (unpack_header(&pack, &h) == -1 || unpack_query(&pack, &q) == -1)
return;
for (; h.ancount; h.ancount--) {
if (unpack_rr(&pack, &rr) == -1)
break;
if (rr.rr_type != T_MX)
continue;
print_dname(rr.rr.mx.exchange, buf, sizeof(buf));
buf[strlen(buf) - 1] = '\0';
dns_lookup_host(s, buf, rr.rr.mx.preference);
found++;
}
free(ar->ar_data);
/* fallback to host if no MX is found. */
if (found == 0)
dns_lookup_host(s, s->name, 0);
}
static void
filter_response(uint64_t qid, int status, int code, const char *line, int notify)
{
struct filter_query *q;
q = tree_xpop(&queries, qid);
free(q);
m_create(&fi.p, IMSG_FILTER_RESPONSE, 0, 0, -1);
m_add_id(&fi.p, qid);
m_add_int(&fi.p, status);
m_add_int(&fi.p, code);
m_add_int(&fi.p, notify);
if (line)
m_add_string(&fi.p, line);
m_close(&fi.p);
}
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);
}
static void
control_broadcast_verbose(int msg, int v)
{
m_create(p_lka, msg, 0, 0, -1);
m_add_int(p_lka, v);
m_close(p_lka);
m_create(p_pony, msg, 0, 0, -1);
m_add_int(p_pony, v);
m_close(p_pony);
m_create(p_queue, msg, 0, 0, -1);
m_add_int(p_queue, v);
m_close(p_queue);
m_create(p_ca, msg, 0, 0, -1);
m_add_int(p_ca, v);
m_close(p_ca);
m_create(p_scheduler, msg, 0, 0, -1);
m_add_int(p_scheduler, v);
m_close(p_scheduler);
m_create(p_parent, msg, 0, 0, -1);
m_add_int(p_parent, v);
m_close(p_parent);
}
static void
dns_dispatch_ptr(struct asr_result *ar, void *arg)
{
struct dns_session *s = arg;
/* The error code could be more precise, but we don't currently care */
m_create(s->p, s->type, 0, 0, -1);
m_add_id(s->p, s->reqid);
m_add_int(s->p, ar->ar_gai_errno ? DNS_ENOTFOUND : DNS_OK);
if (ar->ar_gai_errno == 0)
m_add_string(s->p, s->name);
m_close(s->p);
free(s);
}
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
filter_dispatch(struct mproc *p, struct imsg *imsg)
{
struct filter_connect q_connect;
struct mailaddr maddr;
struct msg m;
const char *line;
uint32_t v;
uint64_t id, qid;
int status, event, hook;
log_debug("debug: %s: imsg %i", filter_name, imsg->hdr.type);
switch (imsg->hdr.type) {
case IMSG_FILTER_REGISTER:
m_msg(&m, imsg);
m_get_u32(&m, &v);
m_end(&m);
if (v != FILTER_API_VERSION)
errx(1, "API version mismatch");
m_create(p, IMSG_FILTER_REGISTER, 0, 0, -1);
m_add_int(p, fi.hooks);
m_add_int(p, fi.flags);
m_close(p);
break;
case IMSG_FILTER_EVENT:
m_msg(&m, imsg);
m_get_id(&m, &id);
m_get_int(&m, &event);
m_end(&m);
filter_dispatch_event(id, event);
break;
case IMSG_FILTER_QUERY:
m_msg(&m, imsg);
m_get_id(&m, &id);
m_get_id(&m, &qid);
m_get_int(&m, &hook);
tree_xset(&queries, qid, NULL);
switch(hook) {
case HOOK_CONNECT:
m_get_sockaddr(&m, (struct sockaddr*)&q_connect.local);
m_get_sockaddr(&m, (struct sockaddr*)&q_connect.remote);
m_get_string(&m, &q_connect.hostname);
m_end(&m);
filter_dispatch_connect(id, qid, &q_connect);
break;
case HOOK_HELO:
m_get_string(&m, &line);
m_end(&m);
filter_dispatch_helo(id, qid, line);
break;
case HOOK_MAIL:
m_get_mailaddr(&m, &maddr);
m_end(&m);
filter_dispatch_mail(id, qid, &maddr);
break;
case HOOK_RCPT:
m_get_mailaddr(&m, &maddr);
m_end(&m);
filter_dispatch_rcpt(id, qid, &maddr);
break;
case HOOK_DATA:
m_end(&m);
filter_dispatch_data(id, qid);
break;
case HOOK_EOM:
m_end(&m);
filter_dispatch_eom(id, qid);
break;
default:
errx(1, "bad query hook: %d", hook);
}
break;
case IMSG_FILTER_NOTIFY:
m_msg(&m, imsg);
m_get_id(&m, &qid);
m_get_int(&m, &status);
m_end(&m);
filter_dispatch_notify(qid, status);
break;
case IMSG_FILTER_DATA:
m_msg(&m, imsg);
m_get_id(&m, &id);
m_get_string(&m, &line);
m_end(&m);
filter_dispatch_dataline(id, line);
break;
}
}
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_resume(struct lka_session *lks)
{
struct envelope *ep;
struct expandnode *xn;
if (lks->error)
goto error;
/* pop next node and expand it */
while ((xn = TAILQ_FIRST(&lks->nodes))) {
TAILQ_REMOVE(&lks->nodes, xn, tq_entry);
lka_expand(lks, xn->rule, xn);
if (lks->flags & F_WAITING)
return;
if (lks->error)
goto error;
}
/* delivery list is empty, reject */
if (TAILQ_FIRST(&lks->deliverylist) == NULL) {
log_trace(TRACE_EXPAND, "expand: lka_done: expanded to empty "
"delivery list");
lks->error = LKA_PERMFAIL;
}
error:
if (lks->error) {
m_create(p_smtp, IMSG_LKA_EXPAND_RCPT, 0, 0, -1);
m_add_id(p_smtp, lks->id);
m_add_int(p_smtp, lks->error);
if (lks->errormsg)
m_add_string(p_smtp, lks->errormsg);
else {
if (lks->error == LKA_PERMFAIL)
m_add_string(p_smtp, "550 Invalid recipient");
else if (lks->error == LKA_TEMPFAIL)
m_add_string(p_smtp, "451 Temporary failure");
}
m_close(p_smtp);
while ((ep = TAILQ_FIRST(&lks->deliverylist)) != NULL) {
TAILQ_REMOVE(&lks->deliverylist, ep, entry);
free(ep);
}
}
else {
/* Process the delivery list and submit envelopes to queue */
while ((ep = TAILQ_FIRST(&lks->deliverylist)) != NULL) {
TAILQ_REMOVE(&lks->deliverylist, ep, entry);
m_create(p_queue, IMSG_QUEUE_SUBMIT_ENVELOPE, 0, 0, -1);
m_add_id(p_queue, lks->id);
m_add_envelope(p_queue, ep);
m_close(p_queue);
free(ep);
}
m_create(p_queue, IMSG_QUEUE_COMMIT_ENVELOPES, 0, 0, -1);
m_add_id(p_queue, lks->id);
m_close(p_queue);
}
expand_clear(&lks->expand);
tree_xpop(&sessions, lks->id);
free(lks);
}
/* 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;
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:
case IMSG_CTL_MTA_SHOW_BLOCK:
if (c->euid)
goto badcred;
imsg->hdr.peerid = c->id;
m_forward(p_mta, imsg);
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_mta, imsg->hdr.type, c->id, 0, -1);
m_add_sockaddr(p_mta, (struct sockaddr *)&ss);
m_add_string(p_mta, (char *)imsg->data + sizeof(ss));
m_close(p_mta);
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);
}
void
dns_imsg(struct mproc *p, struct imsg *imsg)
{
struct sockaddr_storage ss;
struct dns_session *s;
struct sockaddr *sa;
struct asr_query *as;
struct msg m;
const char *domain, *mx, *host;
socklen_t sl;
s = xcalloc(1, sizeof *s, "dns_imsg");
s->type = imsg->hdr.type;
s->p = p;
m_msg(&m, imsg);
m_get_id(&m, &s->reqid);
switch (s->type) {
case IMSG_MTA_DNS_HOST:
m_get_string(&m, &host);
m_end(&m);
dns_lookup_host(s, host, -1);
return;
case IMSG_MTA_DNS_PTR:
case IMSG_SMTP_DNS_PTR:
sa = (struct sockaddr *)&ss;
m_get_sockaddr(&m, sa);
m_end(&m);
as = getnameinfo_async(sa, SA_LEN(sa), s->name, sizeof(s->name),
NULL, 0, 0, NULL);
event_asr_run(as, dns_dispatch_ptr, s);
return;
case IMSG_MTA_DNS_MX:
m_get_string(&m, &domain);
m_end(&m);
(void)strlcpy(s->name, domain, sizeof(s->name));
sa = (struct sockaddr *)&ss;
sl = sizeof(ss);
if (domainname_is_addr(domain, sa, &sl)) {
m_create(s->p, IMSG_MTA_DNS_HOST, 0, 0, -1);
m_add_id(s->p, s->reqid);
m_add_sockaddr(s->p, sa);
m_add_int(s->p, -1);
m_close(s->p);
m_create(s->p, IMSG_MTA_DNS_HOST_END, 0, 0, -1);
m_add_id(s->p, s->reqid);
m_add_int(s->p, DNS_OK);
m_close(s->p);
free(s);
return;
}
as = res_query_async(s->name, C_IN, T_MX, NULL);
if (as == NULL) {
log_warn("warn: req_query_async: %s", s->name);
m_create(s->p, IMSG_MTA_DNS_HOST_END, 0, 0, -1);
m_add_id(s->p, s->reqid);
m_add_int(s->p, DNS_EINVAL);
m_close(s->p);
free(s);
return;
}
event_asr_run(as, dns_dispatch_mx, s);
return;
case IMSG_MTA_DNS_MX_PREFERENCE:
m_get_string(&m, &domain);
m_get_string(&m, &mx);
m_end(&m);
(void)strlcpy(s->name, mx, sizeof(s->name));
as = res_query_async(domain, C_IN, T_MX, NULL);
if (as == NULL) {
m_create(s->p, IMSG_MTA_DNS_MX_PREFERENCE, 0, 0, -1);
m_add_id(s->p, s->reqid);
m_add_int(s->p, DNS_ENOTFOUND);
m_close(s->p);
free(s);
return;
}
event_asr_run(as, dns_dispatch_mx_preference, s);
return;
default:
log_warnx("warn: bad dns request %d", s->type);
fatal(NULL);
}
}
static void
filter_dispatch(struct mproc *p, struct imsg *imsg)
{
struct filter_session *s;
struct filter_connect q_connect;
struct mailaddr maddr;
struct msg m;
const char *line, *name;
uint32_t v, datalen;
uint64_t id, qid;
int status, type;
int fds[2], fdin, fdout;
log_trace(TRACE_FILTERS, "filter-api:%s imsg %s", filter_name,
filterimsg_to_str(imsg->hdr.type));
switch (imsg->hdr.type) {
case IMSG_FILTER_REGISTER:
m_msg(&m, imsg);
m_get_u32(&m, &v);
m_get_string(&m, &name);
filter_name = strdup(name);
m_end(&m);
if (v != FILTER_API_VERSION) {
log_warnx("warn: filter-api:%s API mismatch", filter_name);
fatalx("filter-api: exiting");
}
m_create(p, IMSG_FILTER_REGISTER, 0, 0, -1);
m_add_int(p, fi.hooks);
m_add_int(p, fi.flags);
m_close(p);
break;
case IMSG_FILTER_EVENT:
m_msg(&m, imsg);
m_get_id(&m, &id);
m_get_int(&m, &type);
m_end(&m);
switch (type) {
case EVENT_CONNECT:
s = xcalloc(1, sizeof(*s), "filter_dispatch");
s->id = id;
s->pipe.iev.sock = -1;
s->pipe.oev.sock = -1;
tree_xset(&sessions, id, s);
break;
case EVENT_DISCONNECT:
filter_dispatch_disconnect(id);
s = tree_xpop(&sessions, id);
free(s);
break;
case EVENT_RESET:
filter_dispatch_reset(id);
break;
case EVENT_COMMIT:
filter_dispatch_commit(id);
break;
case EVENT_ROLLBACK:
filter_dispatch_rollback(id);
break;
default:
log_warnx("warn: filter-api:%s bad event %d", filter_name, type);
fatalx("filter-api: exiting");
}
break;
case IMSG_FILTER_QUERY:
m_msg(&m, imsg);
m_get_id(&m, &id);
m_get_id(&m, &qid);
m_get_int(&m, &type);
switch(type) {
case QUERY_CONNECT:
m_get_sockaddr(&m, (struct sockaddr*)&q_connect.local);
m_get_sockaddr(&m, (struct sockaddr*)&q_connect.remote);
m_get_string(&m, &q_connect.hostname);
m_end(&m);
filter_register_query(id, qid, type);
filter_dispatch_connect(id, &q_connect);
break;
case QUERY_HELO:
m_get_string(&m, &line);
m_end(&m);
filter_register_query(id, qid, type);
filter_dispatch_helo(id, line);
break;
case QUERY_MAIL:
m_get_mailaddr(&m, &maddr);
m_end(&m);
filter_register_query(id, qid, type);
filter_dispatch_mail(id, &maddr);
break;
case QUERY_RCPT:
m_get_mailaddr(&m, &maddr);
m_end(&m);
filter_register_query(id, qid, type);
filter_dispatch_rcpt(id, &maddr);
break;
case QUERY_DATA:
m_end(&m);
filter_register_query(id, qid, type);
filter_dispatch_data(id);
break;
case QUERY_EOM:
m_get_u32(&m, &datalen);
m_end(&m);
filter_register_query(id, qid, type);
filter_dispatch_eom(id, datalen);
break;
default:
log_warnx("warn: filter-api:%s bad query %d", filter_name, type);
fatalx("filter-api: exiting");
}
break;
case IMSG_FILTER_PIPE:
m_msg(&m, imsg);
m_get_id(&m, &id);
m_end(&m);
fdout = imsg->fd;
fdin = -1;
if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, fds) == -1) {
log_warn("warn: filter-api:%s socketpair", filter_name);
close(fdout);
}
else {
s = tree_xget(&sessions, id);
s->pipe.eom_called = 0;
s->pipe.error = 0;
s->pipe.idatalen = 0;
s->pipe.odatalen = 0;
iobuf_init(&s->pipe.obuf, 0, 0);
io_init(&s->pipe.oev, fdout, s, filter_io_out, &s->pipe.obuf);
io_set_write(&s->pipe.oev);
iobuf_init(&s->pipe.ibuf, 0, 0);
io_init(&s->pipe.iev, fds[0], s, filter_io_in, &s->pipe.ibuf);
io_set_read(&s->pipe.iev);
fdin = fds[1];
}
log_trace(TRACE_FILTERS, "filter-api:%s %016"PRIx64" tx pipe %d -> %d",
filter_name, id, fdin, fdout);
m_create(&fi.p, IMSG_FILTER_PIPE, 0, 0, fdin);
m_add_id(&fi.p, id);
m_close(&fi.p);
break;
}
}
void
ca_imsg(struct mproc *p, struct imsg *imsg)
{
RSA *rsa;
const void *from = NULL;
unsigned char *to = NULL;
struct msg m;
const char *pkiname;
size_t flen, tlen, padding;
struct pki *pki;
int ret = 0;
uint64_t id;
int v;
if (p->proc == PROC_PARENT) {
switch (imsg->hdr.type) {
case IMSG_CONF_START:
return;
case IMSG_CONF_END:
ca_init();
/* Start fulfilling requests */
mproc_enable(p_pony);
return;
}
}
if (p->proc == PROC_CONTROL) {
switch (imsg->hdr.type) {
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;
}
}
if (p->proc == PROC_PONY) {
switch (imsg->hdr.type) {
case IMSG_CA_PRIVENC:
case IMSG_CA_PRIVDEC:
m_msg(&m, imsg);
m_get_id(&m, &id);
m_get_string(&m, &pkiname);
m_get_data(&m, &from, &flen);
m_get_size(&m, &tlen);
m_get_size(&m, &padding);
m_end(&m);
pki = dict_get(env->sc_pki_dict, pkiname);
if (pki == NULL || pki->pki_pkey == NULL ||
(rsa = EVP_PKEY_get1_RSA(pki->pki_pkey)) == NULL)
fatalx("ca_imsg: invalid pki");
if ((to = calloc(1, tlen)) == NULL)
fatalx("ca_imsg: calloc");
switch (imsg->hdr.type) {
case IMSG_CA_PRIVENC:
ret = RSA_private_encrypt(flen, from, to, rsa,
padding);
break;
case IMSG_CA_PRIVDEC:
ret = RSA_private_decrypt(flen, from, to, rsa,
padding);
break;
}
m_create(p, imsg->hdr.type, 0, 0, -1);
m_add_id(p, id);
m_add_int(p, ret);
if (ret > 0)
m_add_data(p, to, (size_t)ret);
m_close(p);
free(to);
RSA_free(rsa);
return;
}
}
errx(1, "ca_imsg: unexpected %s imsg", imsg_to_str(imsg->hdr.type));
}