static gboolean session_write_msg_cb(SockInfo *source, GIOCondition condition,
gpointer data)
{
Session *session = SESSION(data);
gint ret;
g_return_val_if_fail(condition == G_IO_OUT, FALSE);
g_return_val_if_fail(session->write_buf != NULL, FALSE);
g_return_val_if_fail(session->write_buf_p != NULL, FALSE);
g_return_val_if_fail(session->write_buf_len > 0, FALSE);
ret = session_write_buf(session);
if (ret < 0) {
session->state = SESSION_ERROR;
return FALSE;
} else if (ret > 0)
return TRUE;
if (session->io_tag > 0) {
g_source_remove(session->io_tag);
session->io_tag = 0;
}
session_recv_msg(session);
return FALSE;
}
static void sieve_read_chunk(SieveSession *session, gchar *data, guint len)
{
log_print(LOG_PROTOCOL, "Sieve< [%u bytes]\n", len);
switch (session->state) {
case SIEVE_GETSCRIPT_DATA:
command_cb(session->current_cmd, (gchar *)data);
break;
case SIEVE_SETACTIVE:
/* Dovecot shows a script's warnings when making it active */
/* TODO: append message in case it is very long*/
strretchomp(data);
sieve_error(session, data);
break;
case SIEVE_PUTSCRIPT: {
SieveResult result = {.description = (gchar *)data};
sieve_session_putscript_cb(session, &result);
break;
}
default:
log_warning(LOG_PROTOCOL,
_("error occurred on SIEVE session\n"));
}
}
static gint sieve_read_chunk_done(SieveSession *session)
{
gint ret = SE_OK;
switch (session->state) {
case SIEVE_GETSCRIPT_DATA:
/* wait for ending "OK" response */
break;
case SIEVE_SETACTIVE:
case SIEVE_PUTSCRIPT:
session->state = SIEVE_READY;
break;
default:
log_warning(LOG_PROTOCOL,
_("error occurred on SIEVE session\n"));
}
if (ret == SE_OK && session->state == SIEVE_READY)
ret = sieve_pop_send_queue(session);
if (ret == SE_OK)
return session_recv_msg(SESSION(session));
return 0;
}
static gint smtp_session_recv_msg(Session *session, const gchar *msg)
{
SMTPSession *smtp_session = SMTP_SESSION(session);
gboolean cont = FALSE;
if (strlen(msg) < 4) {
log_warning(_("bad SMTP response\n"));
return -1;
}
switch (smtp_session->state) {
case SMTP_EHLO:
case SMTP_STARTTLS:
case SMTP_AUTH:
case SMTP_AUTH_PLAIN:
case SMTP_AUTH_LOGIN_USER:
case SMTP_AUTH_LOGIN_PASS:
case SMTP_AUTH_CRAM_MD5:
log_print("ESMTP< %s\n", msg);
break;
default:
log_print("SMTP< %s\n", msg);
break;
}
if (msg[0] == '5' && msg[1] == '0' &&
(msg[2] == '4' || msg[2] == '3' || msg[2] == '1')) {
log_warning(_("error occurred on SMTP session\n"));
smtp_session->state = SMTP_ERROR;
smtp_session->error_val = SM_ERROR;
g_free(smtp_session->error_msg);
smtp_session->error_msg = g_strdup(msg);
return -1;
}
if (!strncmp(msg, "535", 3)) {
log_warning(_("error occurred on authentication\n"));
smtp_session->state = SMTP_ERROR;
smtp_session->error_val = SM_AUTHFAIL;
g_free(smtp_session->error_msg);
smtp_session->error_msg = g_strdup(msg);
return -1;
}
if (msg[0] != '1' && msg[0] != '2' && msg[0] != '3') {
log_warning(_("error occurred on SMTP session\n"));
smtp_session->state = SMTP_ERROR;
smtp_session->error_val = SM_ERROR;
g_free(smtp_session->error_msg);
smtp_session->error_msg = g_strdup(msg);
return -1;
}
if (msg[3] == '-')
cont = TRUE;
else if (msg[3] != ' ' && msg[3] != '\0') {
log_warning(_("bad SMTP response\n"));
smtp_session->state = SMTP_ERROR;
smtp_session->error_val = SM_UNRECOVERABLE;
return -1;
}
/* ignore all multiline responses except for EHLO */
if (cont && smtp_session->state != SMTP_EHLO)
return session_recv_msg(session);
switch (smtp_session->state) {
case SMTP_READY:
if (strstr(msg, "ESMTP"))
smtp_session->is_esmtp = TRUE;
case SMTP_CONNECTED:
#if USE_OPENSSL
if (smtp_session->user || session->ssl_type != SSL_NONE ||
smtp_session->is_esmtp)
#else
if (smtp_session->user || smtp_session->is_esmtp)
#endif
smtp_ehlo(smtp_session);
else
smtp_helo(smtp_session);
break;
case SMTP_HELO:
smtp_from(smtp_session);
break;
case SMTP_EHLO:
smtp_ehlo_recv(smtp_session, msg);
if (cont == TRUE)
break;
if (smtp_session->max_message_size > 0
&& smtp_session->max_message_size < smtp_session->send_data_len) {
log_warning(_("Message is too big "
"(Maximum size is %s)\n"),
to_human_readable(
(off_t)(smtp_session->max_message_size)));
smtp_session->state = SMTP_ERROR;
smtp_session->error_val = SM_ERROR;
return -1;
}
#if USE_OPENSSL
if (session->ssl_type == SSL_STARTTLS &&
smtp_session->tls_init_done == FALSE) {
smtp_starttls(smtp_session);
break;
}
#endif
if (smtp_session->user) {
if (smtp_auth(smtp_session) != SM_OK)
smtp_from(smtp_session);
} else
smtp_from(smtp_session);
break;
case SMTP_STARTTLS:
#if USE_OPENSSL
if (session_start_tls(session) < 0) {
log_warning(_("can't start TLS session\n"));
smtp_session->state = SMTP_ERROR;
smtp_session->error_val = SM_ERROR;
return -1;
}
smtp_session->tls_init_done = TRUE;
smtp_ehlo(smtp_session);
#endif
break;
case SMTP_AUTH:
smtp_auth_recv(smtp_session, msg);
break;
case SMTP_AUTH_LOGIN_USER:
smtp_auth_login_user_recv(smtp_session, msg);
break;
case SMTP_AUTH_PLAIN:
case SMTP_AUTH_LOGIN_PASS:
case SMTP_AUTH_CRAM_MD5:
smtp_from(smtp_session);
break;
case SMTP_FROM:
if (smtp_session->cur_to)
smtp_rcpt(smtp_session);
break;
case SMTP_RCPT:
if (smtp_session->cur_to)
smtp_rcpt(smtp_session);
else
smtp_data(smtp_session);
break;
case SMTP_DATA:
smtp_send_data(smtp_session);
break;
case SMTP_EOM:
smtp_quit(smtp_session);
break;
case SMTP_QUIT:
session_disconnect(session);
break;
case SMTP_ERROR:
default:
log_warning(_("error occurred on SMTP session\n"));
smtp_session->error_val = SM_ERROR;
return -1;
}
if (cont)
return session_recv_msg(session);
return 0;
}
static gint sieve_session_recv_msg(Session *session, const gchar *msg)
{
SieveSession *sieve_session = SIEVE_SESSION(session);
SieveResult result;
gint ret = SE_OK;
log_print(LOG_PROTOCOL, "Sieve< %s\n", msg);
if (response_is_bye(msg)) {
gchar *status;
parse_response((gchar *)msg, &result);
if (!result.description)
status = g_strdup(_("Disconnected"));
else if (g_str_has_prefix(result.description, "Disconnected"))
status = g_strdup(result.description);
else
status = g_strdup_printf(_("Disconnected: %s"), result.description);
sieve_session->error = SE_ERROR;
sieve_error(sieve_session, status);
sieve_session->state = SIEVE_DISCONNECTED;
g_free(status);
return -1;
}
switch (sieve_session->state) {
case SIEVE_CAPABILITIES:
if (response_is_ok(msg)) {
/* capabilities list done */
#ifdef USE_GNUTLS
if (sieve_session->tls_init_done == FALSE &&
sieve_session->config->tls_type != SIEVE_TLS_NO) {
if (sieve_session->capability.starttls) {
log_print(LOG_PROTOCOL, "Sieve> STARTTLS\n");
session_send_msg(session, SESSION_SEND, "STARTTLS");
sieve_session->state = SIEVE_STARTTLS;
} else if (sieve_session->config->tls_type == SIEVE_TLS_YES) {
log_warning(LOG_PROTOCOL, "Sieve: does not support STARTTLS\n");
sieve_session->state = SIEVE_ERROR;
} else {
log_warning(LOG_PROTOCOL, "Sieve: continuing without TLS\n");
sieve_session->state = SIEVE_READY;
}
break;
}
#endif
/* authenticate after getting capabilities */
if (!sieve_session->authenticated) {
ret = sieve_auth(sieve_session);
} else {
sieve_session->state = SIEVE_READY;
sieve_connected(sieve_session, TRUE);
}
} else {
/* got a capability */
gchar *cap_name, *cap_value;
parse_split((gchar *)msg, &cap_name, &cap_value);
sieve_got_capability(sieve_session, cap_name, cap_value);
}
break;
case SIEVE_READY:
if (!msg[0])
break;
log_warning(LOG_PROTOCOL,
_("unhandled message on Sieve session: %s\n"), msg);
break;
case SIEVE_STARTTLS:
#ifdef USE_GNUTLS
if (session_start_tls(session) < 0) {
sieve_session->state = SIEVE_ERROR;
sieve_session->error = SE_ERROR;
sieve_error(sieve_session, _("TLS failed"));
return -1;
}
sieve_session->tls_init_done = TRUE;
sieve_session->state = SIEVE_CAPABILITIES;
#endif
break;
case SIEVE_AUTH:
ret = sieve_auth_recv(sieve_session, msg);
break;
case SIEVE_AUTH_LOGIN_USER:
ret = sieve_auth_login_user_recv(sieve_session, msg);
break;
case SIEVE_AUTH_PLAIN:
case SIEVE_AUTH_LOGIN_PASS:
case SIEVE_AUTH_CRAM_MD5:
if (response_is_no(msg)) {
log_print(LOG_PROTOCOL, "Sieve auth failed\n");
session->state = SIEVE_RETRY_AUTH;
ret = SE_AUTHFAIL;
} else if (response_is_ok(msg)) {
log_print(LOG_PROTOCOL, "Sieve auth completed\n");
sieve_error(sieve_session, "");
sieve_session->authenticated = TRUE;
sieve_session->state = SIEVE_READY;
sieve_connected(sieve_session, TRUE);
}
break;
case SIEVE_NOOP:
if (!response_is_ok(msg)) {
sieve_session->state = SIEVE_ERROR;
}
sieve_session->state = SIEVE_READY;
break;
case SIEVE_LISTSCRIPTS:
if (response_is_no(msg)) {
/* got an error. probably not authenticated. */
command_cb(sieve_session->current_cmd, NULL);
sieve_session->state = SIEVE_READY;
} else if (response_is_ok(msg)) {
/* end of list */
sieve_session->state = SIEVE_READY;
sieve_session->error = SE_OK;
command_cb(sieve_session->current_cmd,
(gpointer)&(SieveScript){0});
} else {
/* got a script name */
SieveScript script;
gchar *script_status;
parse_split((gchar *)msg, &script.name, &script_status);
script.active = (script_status &&
strcasecmp(script_status, "active") == 0);
command_cb(sieve_session->current_cmd,
(gpointer)&script);
}
break;
case SIEVE_RENAMESCRIPT:
if (response_is_no(msg)) {
/* error */
command_cb(sieve_session->current_cmd, NULL);
} else if (response_is_ok(msg)) {
command_cb(sieve_session->current_cmd, (void*)TRUE);
} else {
log_warning(LOG_PROTOCOL, _("error occurred on SIEVE session\n"));
}
sieve_session->state = SIEVE_READY;
break;
case SIEVE_SETACTIVE:
parse_response((gchar *)msg, &result);
if (result.success) {
/* clear status possibly set when setting another
* script active. TODO: give textual feedback */
sieve_error(sieve_session, "");
command_cb(sieve_session->current_cmd, NULL);
} else if (result.description) {
command_cb(sieve_session->current_cmd,
result.description);
} else {
log_warning(LOG_PROTOCOL, _("error occurred on SIEVE session\n"));
}
if (result.has_octets) {
return sieve_session_recv_chunk(sieve_session,
result.octets);
} else {
sieve_session->state = SIEVE_READY;
}
break;
case SIEVE_GETSCRIPT:
if (response_is_no(msg)) {
command_cb(sieve_session->current_cmd, (void *)-1);
sieve_session->state = SIEVE_READY;
} else {
parse_response((gchar *)msg, &result);
sieve_session->state = SIEVE_GETSCRIPT_DATA;
return sieve_session_recv_chunk(sieve_session,
result.octets);
}
break;
case SIEVE_GETSCRIPT_DATA:
if (!msg[0])
break;
sieve_session->state = SIEVE_READY;
if (response_is_ok(msg)) {
command_cb(sieve_session->current_cmd, NULL);
} else if (msg[0]) {
log_warning(LOG_PROTOCOL, _("error occurred on SIEVE session\n"));
}
break;
case SIEVE_PUTSCRIPT:
if (!msg[0])
break;
parse_response((gchar *)msg, &result);
sieve_session_putscript_cb(sieve_session, &result);
if (result.has_octets) {
return sieve_session_recv_chunk(sieve_session,
result.octets);
} else {
sieve_session->state = SIEVE_READY;
}
break;
case SIEVE_DELETESCRIPT:
parse_response((gchar *)msg, &result);
if (!result.success) {
command_cb(sieve_session->current_cmd,
result.description);
} else {
command_cb(sieve_session->current_cmd, NULL);
}
sieve_session->state = SIEVE_READY;
break;
case SIEVE_ERROR:
log_warning(LOG_PROTOCOL, _("error occurred on Sieve session. data: %s\n"), msg);
sieve_session->error = SE_ERROR;
break;
case SIEVE_RETRY_AUTH:
log_warning(LOG_PROTOCOL, _("unhandled message on Sieve session: %s\n"),
msg);
ret = sieve_auth(sieve_session);
break;
default:
log_warning(LOG_PROTOCOL, _("unhandled message on Sieve session: %d\n"),
sieve_session->state);
sieve_session->error = SE_ERROR;
return -1;
}
if (ret == SE_OK && sieve_session->state == SIEVE_READY)
ret = sieve_pop_send_queue(sieve_session);
if (ret == SE_OK) {
return session_recv_msg(session);
} else if (ret == SE_AUTHFAIL) {
sieve_error(sieve_session, _("Auth failed"));
sieve_session->state = SIEVE_ERROR;
sieve_session->error = SE_ERROR;
}
return 0;
}
