/* 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));
}
/* Search state 3. */
int
imap_state_search3(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));
/* Save the total. */
data->total = ARRAY_LENGTH(&data->wanted);
/* Update grand total. */
data->folders_total += data->total;
/* If no mails, or polling, stop here. */
if (data->total == 0 || fctx->flags & FETCH_POLL) {
if (imap_putln(a, "%u CLOSE", ++data->tag) != 0)
return (FETCH_ERROR);
fctx->state = imap_state_close;
return (FETCH_BLOCK);
}
fctx->state = imap_state_next;
return (FETCH_AGAIN);
}
/* Search state 2. */
int
imap_state_search2(struct account *a, struct fetch_ctx *fctx)
{
struct fetch_imap_data *data = a->data;
char *line, *ptr;
u_int uid;
if (imap_getln(a, fctx, IMAP_UNTAGGED, &line) != 0)
return (FETCH_ERROR);
if (line == NULL)
return (FETCH_BLOCK);
/* Skip the header. */
if (strncasecmp(line, "* SEARCH", 8) != 0)
return (imap_bad(a, line));
line += 8;
/* Read each UID and save it. */
do {
while (isspace((u_char) *line))
line++;
ptr = strchr(line, ' ');
if (ptr == NULL)
ptr = strchr(line, '\0');
if (ptr == line)
break;
if (sscanf(line, "%u", &uid) != 1)
return (imap_bad(a, line));
ARRAY_ADD(&data->wanted, uid);
log_debug3("%s: fetching UID: %u", a->name, uid);
line = ptr;
} while (*line == ' ');
fctx->state = imap_state_search3;
return (FETCH_AGAIN);
}
/* Expunge state. */
int
imap_state_expunge(struct account *a, struct fetch_ctx *fctx)
{
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));
fctx->state = imap_state_next;
return (FETCH_AGAIN);
}
/* Quit state. */
int
imap_state_quit(struct account *a, struct fetch_ctx *fctx)
{
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));
imap_abort(a);
return (FETCH_EXIT);
}
/* Wait for okay. */
int
deliver_imap_waitokay(struct account *a, struct fetch_ctx *fctx, struct io *io,
char **line)
{
do {
if (deliver_imap_poll(a, io) != 0)
return (1);
if (imap_getln(a, fctx, IMAP_TAGGED, line) != 0)
return (1);
} while (*line == NULL);
if (!imap_okay(*line)) {
imap_bad(a, *line);
return (1);
}
return (0);
}
/* Commit state. */
int
imap_state_commit(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));
data->committed++;
fctx->state = imap_state_next;
return (FETCH_AGAIN);
}
/* Mail state. */
int
imap_state_mail(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->capa & IMAP_CAPA_GMEXT) {
fctx->state = imap_state_gmext_start;
return (FETCH_AGAIN);
}
fctx->state = imap_state_next;
return (FETCH_MAIL);
}
/* 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));
}
/*
* Parse line based on type. Returns -1 on error, 0 on success, 1 to ignore
* this line.
*/
int
imap_parse(struct account *a, int type, char *line)
{
struct fetch_imap_data *data = a->data;
int tag;
if (type == IMAP_RAW)
return (0);
tag = imap_tag(line);
switch (type) {
case IMAP_TAGGED:
if (tag == IMAP_TAG_NONE)
return (1);
if (tag == IMAP_TAG_CONTINUE)
goto invalid;
if (tag != data->tag)
goto invalid;
break;
case IMAP_UNTAGGED:
if (tag != IMAP_TAG_NONE)
goto invalid;
break;
case IMAP_CONTINUE:
if (tag == IMAP_TAG_NONE)
return (1);
if (tag != IMAP_TAG_CONTINUE)
goto invalid;
break;
}
return (0);
invalid:
imap_bad(a, line);
return (-1);
}
/* Close state. */
int
imap_state_close(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));
data->folder++;
if (data->folder != ARRAY_LENGTH(data->folders)) {
fctx->state = imap_state_select1;
return (FETCH_AGAIN);
}
if (imap_putln(a, "%u LOGOUT", ++data->tag) != 0)
return (FETCH_ERROR);
fctx->state = imap_state_quit;
return (FETCH_BLOCK);
}
/* Select state 4. Hold until select completes. */
int
imap_state_select4(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 no mails, stop early. */
if (data->total == 0) {
if (imap_putln(a, "%u CLOSE", ++data->tag) != 0)
return (FETCH_ERROR);
fctx->state = imap_state_close;
return (FETCH_BLOCK);
}
fctx->state = imap_state_search1;
return (FETCH_AGAIN);
}