/* Capability state 2. Check capabilities and choose login type. */
int
imap_state_capability2(struct account *a, struct fetch_ctx *fctx)
{
struct fetch_imap_data *data = a->data;
char *line;
if (imap_getln(a, fctx, IMAP_TAGGED, &line) != 0)
return (FETCH_ERROR);
if (line == NULL)
return (FETCH_BLOCK);
if (!imap_okay(line))
return (imap_bad(a, line));
if (data->starttls) {
if (!(data->capa & IMAP_CAPA_STARTTLS)) {
log_warnx("%s: server doesn't support STARTTLS",
a->name);
return (FETCH_ERROR);
}
if (imap_putln(a, "%u STARTTLS", ++data->tag) != 0)
return (FETCH_ERROR);
fctx->state = imap_state_starttls;
return (FETCH_BLOCK);
}
return (imap_pick_auth(a, fctx));
}
/* User state. */
int
imap_state_user(struct account *a, struct fetch_ctx *fctx)
{
struct fetch_imap_data *data = a->data;
char *line;
int tag;
if (data->capa & IMAP_CAPA_NOSPACE) {
if (imap_getln(a, fctx, IMAP_CONTINUE, &line) != 0)
return (FETCH_ERROR);
if (line == NULL)
return (FETCH_BLOCK);
} else {
for (;;) {
if (imap_getln(a, fctx, IMAP_RAW, &line) != 0)
return (FETCH_ERROR);
if (line == NULL)
return (FETCH_BLOCK);
tag = imap_tag(line);
if (tag == IMAP_TAG_NONE)
continue;
if (tag == IMAP_TAG_CONTINUE || tag == data->tag)
break;
return (FETCH_ERROR);
}
if (tag != IMAP_TAG_CONTINUE) {
log_debug("%s: didn't accept user (%s); "
"trying without space", a->name, line);
data->capa |= IMAP_CAPA_NOSPACE;
return (imap_pick_auth(a, fctx));
}
}
if (imap_putln(a, "%s", data->pass) != 0)
return (FETCH_ERROR);
fctx->state = imap_state_pass;
return (FETCH_BLOCK);
}
/* STARTTLS state. */
int
imap_state_starttls(struct account *a, struct fetch_ctx *fctx)
{
struct fetch_imap_data *data = a->data;
char *line, *cause;
if (imap_getln(a, fctx, IMAP_TAGGED, &line) != 0)
return (FETCH_ERROR);
if (line == NULL)
return (FETCH_BLOCK);
if (!imap_okay(line))
return (imap_bad(a, line));
data->io->ssl = makessl(&data->server, data->io->fd,
conf.verify_certs && data->server.verify, conf.timeout, &cause);
if (data->io->ssl == NULL) {
log_warnx("%s: STARTTLS failed: %s", a->name, cause);
xfree(cause);
return (FETCH_ERROR);
}
return (imap_pick_auth(a, fctx));
}
