/*
* Queue some data into the input buffer
*/
static ssize_t
mta_queue_data(struct mta_session *s)
{
char *ln;
size_t len, q;
q = iobuf_queued(&s->iobuf);
while (iobuf_queued(&s->iobuf) < MTA_HIWAT) {
if ((ln = fgetln(s->datafp, &len)) == NULL)
break;
if (ln[len - 1] == '\n')
ln[len - 1] = '\0';
iobuf_xfqueue(&s->iobuf, "mta_queue_data", "%s%s\r\n",
*ln == '.' ? "." : "", ln);
}
if (ferror(s->datafp)) {
mta_status(s, 1, "460 Error reading content file");
return (-1);
}
if (feof(s->datafp)) {
fclose(s->datafp);
s->datafp = NULL;
}
if (s->is_reading) {
s->is_reading = 0;
io_set_write(&s->io);
}
return (iobuf_queued(&s->iobuf) - q);
}
static void
mta_send(struct mta_session *s, char *fmt, ...)
{
va_list ap;
char *p;
int len;
va_start(ap, fmt);
if ((len = vasprintf(&p, fmt, ap)) == -1)
fatal("mta: vasprintf");
va_end(ap);
log_trace(TRACE_MTA, "mta: %p: >>> %s", s, p);
iobuf_xfqueue(&s->iobuf, "mta_send", "%s\r\n", p);
free(p);
if (s->is_reading) {
s->is_reading = 0;
io_set_write(&s->io);
}
}
static void
mta_io(struct io *io, int evt)
{
struct mta_session *s = io->arg;
char *line, *msg, *p;
size_t len;
const char *error;
int cont;
X509 *x;
log_trace(TRACE_IO, "mta: %p: %s %s", s, io_strevent(evt),
io_strio(io));
switch (evt) {
case IO_CONNECTED:
log_info("smtp-out: Connected on session %016"PRIx64, s->id);
if (s->use_smtps) {
io_set_write(io);
mta_start_tls(s);
}
else {
mta_enter_state(s, MTA_BANNER);
io_set_read(io);
}
break;
case IO_TLSREADY:
log_info("smtp-out: Started TLS on session %016"PRIx64": %s",
s->id, ssl_to_text(s->io.ssl));
s->flags |= MTA_TLS;
if (mta_verify_certificate(s)) {
io_pause(&s->io, IO_PAUSE_IN);
break;
}
case IO_TLSVERIFIED:
x = SSL_get_peer_certificate(s->io.ssl);
if (x) {
log_info("smtp-out: Server certificate verification %s "
"on session %016"PRIx64,
(s->flags & MTA_VERIFIED) ? "succeeded" : "failed",
s->id);
X509_free(x);
}
if (s->use_smtps) {
mta_enter_state(s, MTA_BANNER);
io_set_read(io);
}
else
mta_enter_state(s, MTA_EHLO);
break;
case IO_DATAIN:
nextline:
line = iobuf_getline(&s->iobuf, &len);
if (line == NULL) {
if (iobuf_len(&s->iobuf) >= SMTPD_MAXLINESIZE) {
mta_error(s, "Input too long");
mta_free(s);
return;
}
iobuf_normalize(&s->iobuf);
break;
}
log_trace(TRACE_MTA, "mta: %p: <<< %s", s, line);
if ((error = parse_smtp_response(line, len, &msg, &cont))) {
mta_error(s, "Bad response: %s", error);
mta_free(s);
return;
}
/* read extensions */
if (s->state == MTA_EHLO) {
if (strcmp(msg, "STARTTLS") == 0)
s->ext |= MTA_EXT_STARTTLS;
else if (strncmp(msg, "AUTH ", 5) == 0) {
s->ext |= MTA_EXT_AUTH;
if ((p = strstr(msg, " PLAIN")) &&
(*(p+6) == '\0' || *(p+6) == ' '))
s->ext |= MTA_EXT_AUTH_PLAIN;
if ((p = strstr(msg, " LOGIN")) &&
(*(p+6) == '\0' || *(p+6) == ' '))
s->ext |= MTA_EXT_AUTH_LOGIN;
}
else if (strcmp(msg, "PIPELINING") == 0)
s->ext |= MTA_EXT_PIPELINING;
else if (strcmp(msg, "DSN") == 0)
s->ext |= MTA_EXT_DSN;
}
if (cont)
goto nextline;
if (s->state == MTA_QUIT) {
log_info("smtp-out: Closing session %016"PRIx64
": %zu message%s sent.", s->id, s->msgcount,
(s->msgcount > 1) ? "s" : "");
mta_free(s);
return;
}
io_set_write(io);
mta_response(s, line);
if (s->flags & MTA_FREE) {
mta_free(s);
return;
}
iobuf_normalize(&s->iobuf);
if (iobuf_len(&s->iobuf)) {
log_debug("debug: mta: remaining data in input buffer");
mta_error(s, "Remote host sent too much data");
if (s->flags & MTA_WAIT)
s->flags |= MTA_FREE;
else
mta_free(s);
}
break;
case IO_LOWAT:
if (s->state == MTA_BODY) {
mta_enter_state(s, MTA_BODY);
if (s->flags & MTA_FREE) {
mta_free(s);
return;
}
}
if (iobuf_queued(&s->iobuf) == 0)
io_set_read(io);
break;
case IO_TIMEOUT:
log_debug("debug: mta: %p: connection timeout", s);
mta_error(s, "Connection timeout");
if (!s->ready)
mta_connect(s);
else
mta_free(s);
break;
case IO_ERROR:
log_debug("debug: mta: %p: IO error: %s", s, io->error);
mta_error(s, "IO Error: %s", io->error);
if (!s->ready)
mta_connect(s);
else
mta_free(s);
break;
case IO_DISCONNECTED:
log_debug("debug: mta: %p: disconnected in state %s",
s, mta_strstate(s->state));
mta_error(s, "Connection closed unexpectedly");
if (!s->ready)
mta_connect(s);
else
mta_free(s);
break;
default:
fatalx("mta_io() bad event");
}
}
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
session_io(struct io *io, int evt)
{
struct session *s = io->arg;
void *ssl;
char *line;
size_t len;
log_trace(TRACE_IO, "smtp: %p: %s %s", s, io_strevent(evt), io_strio(io));
switch(evt) {
case IO_TLSREADY:
s->s_flags |= F_SECURE;
if (s->s_l->flags & F_SMTPS)
stat_increment("smtp.smtps", 1);
if (s->s_l->flags & F_STARTTLS)
stat_increment("smtp.tls", 1);
if (s->s_state == S_INIT) {
io_set_write(&s->s_io);
session_respond(s, SMTPD_BANNER, env->sc_hostname);
}
session_enter_state(s, S_GREETED);
break;
case IO_DATAIN:
nextline:
line = iobuf_getline(&s->s_iobuf, &len);
if ((line == NULL && iobuf_len(&s->s_iobuf) >= SMTP_LINE_MAX) ||
(line && len >= SMTP_LINE_MAX)) {
session_respond(s, "500 5.0.0 Line too long");
session_enter_state(s, S_QUIT);
io_set_write(io);
return;
}
if (line == NULL) {
iobuf_normalize(&s->s_iobuf);
return;
}
if (s->s_state == S_DATACONTENT && strcmp(line, ".")) {
/* more data to come */
session_line(s, line, len);
goto nextline;
}
/* pipelining not supported */
if (iobuf_len(&s->s_iobuf)) {
session_respond(s, "500 5.0.0 Pipelining not supported");
session_enter_state(s, S_QUIT);
io_set_write(io);
return;
}
session_line(s, line, len);
iobuf_normalize(&s->s_iobuf);
io_set_write(io);
break;
case IO_LOWAT:
if (s->s_state == S_QUIT) {
session_destroy(s, "done");
break;
}
io_set_read(io);
/* wait for the client to start tls */
if (s->s_state == S_TLS) {
ssl = ssl_smtp_init(s->s_l->ssl_ctx);
io_start_tls(io, ssl);
}
break;
case IO_TIMEOUT:
session_destroy(s, "timeout");
break;
case IO_DISCONNECTED:
session_destroy(s, "disconnected");
break;
case IO_ERROR:
session_destroy(s, "error");
break;
default:
fatal("session_io()");
}
}
static void
mta_io(struct io *io, int evt)
{
struct mta_session *s = io->arg;
char *line, *msg, *p;
size_t len;
const char *error;
int cont;
X509 *x;
log_trace(TRACE_IO, "mta: %p: %s %s", s, io_strevent(evt),
io_strio(io));
switch (evt) {
case IO_CONNECTED:
log_info("smtp-out: Connected on session %016"PRIx64, s->id);
if (s->use_smtps) {
io_set_write(io);
mta_start_tls(s);
}
else {
mta_enter_state(s, MTA_BANNER);
io_set_read(io);
}
break;
case IO_TLSREADY:
log_info("smtp-out: Started TLS on session %016"PRIx64": %s",
s->id, ssl_to_text(s->io.ssl));
s->flags |= MTA_TLS;
if (mta_verify_certificate(s)) {
io_pause(&s->io, IO_PAUSE_IN);
break;
}
case IO_TLSVERIFIED:
x = SSL_get_peer_certificate(s->io.ssl);
if (x) {
log_info("smtp-out: Server certificate verification %s "
"on session %016"PRIx64,
(s->flags & MTA_VERIFIED) ? "succeeded" : "failed",
s->id);
X509_free(x);
}
if (s->use_smtps) {
mta_enter_state(s, MTA_BANNER);
io_set_read(io);
}
else
mta_enter_state(s, MTA_EHLO);
break;
case IO_DATAIN:
nextline:
line = iobuf_getline(&s->iobuf, &len);
if (line == NULL) {
if (iobuf_len(&s->iobuf) >= LINE_MAX) {
mta_error(s, "Input too long");
mta_free(s);
return;
}
iobuf_normalize(&s->iobuf);
break;
}
log_trace(TRACE_MTA, "mta: %p: <<< %s", s, line);
if ((error = parse_smtp_response(line, len, &msg, &cont))) {
mta_error(s, "Bad response: %s", error);
mta_free(s);
return;
}
/* read extensions */
if (s->state == MTA_EHLO) {
if (strcmp(msg, "STARTTLS") == 0)
s->ext |= MTA_EXT_STARTTLS;
else if (strncmp(msg, "AUTH ", 5) == 0) {
s->ext |= MTA_EXT_AUTH;
if ((p = strstr(msg, " PLAIN")) &&
(*(p+6) == '\0' || *(p+6) == ' '))
s->ext |= MTA_EXT_AUTH_PLAIN;
if ((p = strstr(msg, " LOGIN")) &&
(*(p+6) == '\0' || *(p+6) == ' '))
s->ext |= MTA_EXT_AUTH_LOGIN;
}
else if (strcmp(msg, "PIPELINING") == 0)
s->ext |= MTA_EXT_PIPELINING;
else if (strcmp(msg, "DSN") == 0)
s->ext |= MTA_EXT_DSN;
}
/* continuation reply, we parse out the repeating statuses and ESC */
if (cont) {
if (s->replybuf[0] == '\0')
(void)strlcat(s->replybuf, line, sizeof s->replybuf);
else {
line = line + 4;
if (isdigit((int)*line) && *(line + 1) == '.' &&
isdigit((int)*line+2) && *(line + 3) == '.' &&
isdigit((int)*line+4) && isspace((int)*(line + 5)))
(void)strlcat(s->replybuf, line+5, sizeof s->replybuf);
else
(void)strlcat(s->replybuf, line, sizeof s->replybuf);
}
goto nextline;
}
/* last line of a reply, check if we're on a continuation to parse out status and ESC.
* if we overflow reply buffer or are not on continuation, log entire last line.
*/
if (s->replybuf[0] != '\0') {
p = line + 4;
if (isdigit((int)*p) && *(p + 1) == '.' &&
isdigit((int)*p+2) && *(p + 3) == '.' &&
isdigit((int)*p+4) && isspace((int)*(p + 5)))
p += 5;
if (strlcat(s->replybuf, p, sizeof s->replybuf) >= sizeof s->replybuf)
(void)strlcpy(s->replybuf, line, sizeof s->replybuf);
}
else
(void)strlcpy(s->replybuf, line, sizeof s->replybuf);
if (s->state == MTA_QUIT) {
log_info("smtp-out: Closing session %016"PRIx64
": %zu message%s sent.", s->id, s->msgcount,
(s->msgcount > 1) ? "s" : "");
mta_free(s);
return;
}
io_set_write(io);
mta_response(s, s->replybuf);
if (s->flags & MTA_FREE) {
mta_free(s);
return;
}
if (s->flags & MTA_RECONN) {
s->flags &= ~MTA_RECONN;
mta_connect(s);
return;
}
iobuf_normalize(&s->iobuf);
if (iobuf_len(&s->iobuf)) {
log_debug("debug: mta: remaining data in input buffer");
mta_error(s, "Remote host sent too much data");
if (s->flags & MTA_WAIT)
s->flags |= MTA_FREE;
else
mta_free(s);
}
break;
case IO_LOWAT:
if (s->state == MTA_BODY) {
mta_enter_state(s, MTA_BODY);
if (s->flags & MTA_FREE) {
mta_free(s);
return;
}
}
if (iobuf_queued(&s->iobuf) == 0)
io_set_read(io);
break;
case IO_TIMEOUT:
log_debug("debug: mta: %p: connection timeout", s);
mta_error(s, "Connection timeout");
if (!s->ready)
mta_connect(s);
else
mta_free(s);
break;
case IO_ERROR:
log_debug("debug: mta: %p: IO error: %s", s, io->error);
if (!s->ready) {
mta_error(s, "IO Error: %s", io->error);
mta_connect(s);
break;
}
else if (!(s->flags & (MTA_FORCE_TLS|MTA_FORCE_ANYSSL))) {
/* error in non-strict SSL negotiation, downgrade to plain */
if (s->flags & MTA_TLS) {
log_info("smtp-out: Error on session %016"PRIx64
": opportunistic TLS failed, "
"downgrading to plain", s->id);
s->flags &= ~MTA_TLS;
s->flags |= MTA_DOWNGRADE_PLAIN;
mta_connect(s);
break;
}
}
mta_error(s, "IO Error: %s", io->error);
mta_free(s);
break;
case IO_TLSERROR:
log_debug("debug: mta: %p: TLS IO error: %s", s, io->error);
if (!(s->flags & (MTA_FORCE_TLS|MTA_FORCE_ANYSSL))) {
/* error in non-strict SSL negotiation, downgrade to plain */
log_info("smtp-out: TLS Error on session %016"PRIx64
": TLS failed, "
"downgrading to plain", s->id);
s->flags &= ~MTA_TLS;
s->flags |= MTA_DOWNGRADE_PLAIN;
mta_connect(s);
break;
}
mta_error(s, "IO Error: %s", io->error);
mta_free(s);
break;
case IO_DISCONNECTED:
log_debug("debug: mta: %p: disconnected in state %s",
s, mta_strstate(s->state));
mta_error(s, "Connection closed unexpectedly");
if (!s->ready)
mta_connect(s);
else
mta_free(s);
break;
default:
fatalx("mta_io() bad event");
}
}
static void
mta_io(struct io *io, int evt)
{
struct mta_session *s = io->arg;
char *line, *msg;
size_t len;
struct mta_host *host;
const char *error;
int cont;
log_trace(TRACE_IO, "mta: %p: %s %s", s, io_strevent(evt), io_strio(io));
switch (evt) {
case IO_CONNECTED:
s->is_reading = 0;
io_set_timeout(io, 300000);
io_set_write(io);
host = TAILQ_FIRST(&s->hosts);
dns_query_ptr(&host->sa, s->id);
break;
case IO_TLSREADY:
s->flags |= MTA_TLS;
if (s->state == MTA_CONNECT) /* smtps */
mta_enter_state(s, MTA_SMTP_BANNER);
else
mta_enter_state(s, MTA_SMTP_EHLO);
break;
case IO_DATAIN:
nextline:
line = iobuf_getline(&s->iobuf, &len);
if (line == NULL) {
if (iobuf_len(&s->iobuf) >= SMTP_LINE_MAX) {
mta_status(s, 1, "150 Input too long");
mta_enter_state(s, MTA_DONE);
return;
}
iobuf_normalize(&s->iobuf);
break;
}
log_trace(TRACE_MTA, "mta: %p: <<< %s", s, line);
if ((error = parse_smtp_response(line, len, &msg, &cont))) {
mta_status(s, 1, "150 Bad response: %s", error);
mta_enter_state(s, MTA_DONE);
return;
}
/* read extensions */
if (s->state == MTA_SMTP_EHLO) {
if (strcmp(msg, "STARTTLS") == 0)
s->ext |= MTA_EXT_STARTTLS;
else if (strncmp(msg, "AUTH", 4) == 0)
s->ext |= MTA_EXT_AUTH;
else if (strcmp(msg, "PIPELINING") == 0)
s->ext |= MTA_EXT_PIPELINING;
}
if (cont)
goto nextline;
if (s->state == MTA_SMTP_QUIT) {
mta_enter_state(s, MTA_DONE);
return;
}
mta_response(s, line);
iobuf_normalize(&s->iobuf);
break;
case IO_LOWAT:
if (s->state == MTA_SMTP_BODY)
mta_enter_state(s, MTA_SMTP_BODY);
if (iobuf_queued(&s->iobuf) == 0) {
s->is_reading = 1;
io_set_read(io);
}
break;
case IO_TIMEOUT:
log_debug("mta: %p: connection timeout", s);
if (!s->ready) {
mta_enter_state(s, MTA_CONNECT);
break;
}
mta_status(s, 1, "150 connection timeout");
mta_enter_state(s, MTA_DONE);
break;
case IO_ERROR:
log_debug("mta: %p: IO error: %s", s, strerror(errno));
if (!s->ready) {
mta_enter_state(s, MTA_CONNECT);
break;
}
mta_status(s, 1, "150 IO error");
mta_enter_state(s, MTA_DONE);
break;
case IO_DISCONNECTED:
log_debug("mta: %p: disconnected in state %s", s, mta_strstate(s->state));
if (!s->ready) {
mta_enter_state(s, MTA_CONNECT);
break;
}
mta_status(s, 1, "150 connection closed unexpectedly");
mta_enter_state(s, MTA_DONE);
break;
default:
fatalx("mta_io() bad event");
}
}
/*
* Handle a response to an SMTP command
*/
static void
mta_response(struct mta_session *s, char *line)
{
void *ssl;
struct envelope *evp;
switch (s->state) {
case MTA_SMTP_BANNER:
mta_enter_state(s, MTA_SMTP_EHLO);
break;
case MTA_SMTP_EHLO:
if (line[0] != '2') {
if ((s->flags & MTA_USE_AUTH) ||
!(s->flags & MTA_ALLOW_PLAIN)) {
mta_route_error(s->route, line);
mta_enter_state(s, MTA_DONE);
return;
}
mta_enter_state(s, MTA_SMTP_HELO);
return;
}
mta_enter_state(s, MTA_SMTP_STARTTLS);
break;
case MTA_SMTP_HELO:
if (line[0] != '2') {
mta_route_error(s->route, line);
mta_enter_state(s, MTA_DONE);
return;
}
mta_enter_state(s, MTA_SMTP_READY);
break;
case MTA_SMTP_STARTTLS:
if (line[0] != '2') {
if (s->flags & MTA_ALLOW_PLAIN) {
mta_enter_state(s, MTA_SMTP_AUTH);
return;
}
/* stop here if ssl can't be used */
mta_route_error(s->route, line);
mta_enter_state(s, MTA_DONE);
return;
}
ssl = ssl_mta_init(s->ssl);
if (ssl == NULL)
fatal("mta: ssl_mta_init");
s->is_reading = 0;
io_set_write(&s->io);
io_start_tls(&s->io, ssl);
break;
case MTA_SMTP_AUTH:
if (line[0] != '2') {
mta_route_error(s->route, line);
mta_enter_state(s, MTA_DONE);
return;
}
mta_enter_state(s, MTA_SMTP_READY);
break;
case MTA_SMTP_MAIL:
if (line[0] != '2') {
mta_status(s, 0, line);
mta_enter_state(s, MTA_SMTP_RSET);
return;
}
mta_enter_state(s, MTA_SMTP_RCPT);
break;
case MTA_SMTP_RCPT:
evp = s->currevp;
s->currevp = TAILQ_NEXT(s->currevp, entry);
if (line[0] != '2') {
mta_envelope_done(s->task, evp, line);
if (TAILQ_EMPTY(&s->task->envelopes)) {
free(s->task);
s->task = NULL;
stat_decrement("mta.task.running", 1);
mta_enter_state(s, MTA_SMTP_RSET);
break;
}
}
if (s->currevp == NULL)
mta_enter_state(s, MTA_SMTP_DATA);
else
mta_enter_state(s, MTA_SMTP_RCPT);
break;
case MTA_SMTP_DATA:
if (line[0] != '2' && line[0] != '3') {
mta_status(s, 0, line);
mta_enter_state(s, MTA_SMTP_RSET);
return;
}
mta_enter_state(s, MTA_SMTP_BODY);
break;
case MTA_SMTP_DONE:
mta_status(s, 0, line);
if (line[0] == '2')
s->msgcount++;
mta_enter_state(s, MTA_SMTP_READY);
break;
case MTA_SMTP_RSET:
mta_enter_state(s, MTA_SMTP_READY);
break;
default:
fatalx("mta_response() bad state");
}
}
