static void ext_prog_failed(struct ticket_config *tk,
int start_election)
{
if (!is_manual(tk)) {
/* Give it to somebody else.
* Just send a VOTE_FOR message, so the
* others can start elections. */
if (leader_and_valid(tk)) {
save_committed_tkt(tk);
reset_ticket(tk);
ticket_write(tk);
if (start_election) {
ticket_broadcast(tk, OP_VOTE_FOR, OP_REQ_VOTE, RLT_SUCCESS, OR_LOCAL_FAIL);
}
}
} else {
/* There is not much we can do now because
* the manual ticket cannot be relocated.
* Just warn the user. */
if (tk->leader == local) {
save_committed_tkt(tk);
reset_ticket(tk);
ticket_write(tk);
log_error("external test failed on the specified machine, cannot acquire a manual ticket");
}
}
}
static int process_REVOKE (
struct ticket_config *tk,
struct booth_site *sender,
struct booth_site *leader,
struct boothc_ticket_msg *msg
)
{
int rv;
if (tk->state == ST_INIT && tk->leader == no_leader) {
/* assume that our ack got lost */
rv = send_msg(OP_ACK, tk, sender, msg);
} else if (tk->leader != sender) {
tk_log_error("%s wants to revoke ticket, "
"but it is not granted there (ignoring)",
site_string(sender));
return 1;
} else if (tk->state != ST_FOLLOWER) {
tk_log_error("unexpected ticket revoke from %s "
"(in state %s) (ignoring)",
site_string(sender),
state_to_string(tk->state));
return 1;
} else {
tk_log_info("%s revokes ticket",
site_string(tk->leader));
save_committed_tkt(tk);
reset_ticket(tk);
set_leader(tk, no_leader);
ticket_write(tk);
rv = send_msg(OP_ACK, tk, sender, msg);
}
return rv;
}
static int process_UPDATE (
struct ticket_config *tk,
struct booth_site *sender,
struct booth_site *leader,
struct boothc_ticket_msg *msg
)
{
if (is_owned(tk) && sender != tk->leader) {
tk_log_warn("different leader %s wants to update "
"our ticket, sending reject",
site_string(leader));
return send_reject(sender, tk, RLT_TERM_OUTDATED, msg);
}
tk_log_debug("leader %s wants to update our ticket",
site_string(leader));
become_follower(tk, msg);
set_leader(tk, leader);
ticket_write(tk);
/* run ticket_cron if the ticket expires */
set_ticket_wakeup(tk);
return send_msg(OP_ACK, tk, sender, msg);
}
static void start_revoke_ticket(struct ticket_config *tk)
{
tk_log_info("revoking ticket");
save_committed_tkt(tk);
reset_ticket_and_set_no_leader(tk);
ticket_write(tk);
ticket_broadcast(tk, OP_REVOKE, OP_ACK, RLT_SUCCESS, OR_ADMIN);
}
int chirp_acl_ticket_modify(const char *subject, const char *ticket_subject, const char *path, int flags)
{
char ticket_filename[CHIRP_PATH_MAX];
const char *digest;
char *esubject;
struct chirp_ticket ct;
int status = 0;
if(!chirp_ticket_isticketsubject(ticket_subject, &digest)) {
errno = EINVAL;
return -1;
}
/* Note about tickets making tickets:
* We check whether the ticket has the rights associated with the mask in
* the next line. So, a ticket can only make a ticket with rights it
* already has.
*/
if(!chirp_acl_check_dir(path, subject, flags))
return -1; /* you don't have the rights for the mask */
if(!chirp_acl_whoami(subject, &esubject))
return -1;
chirp_ticket_filename(ticket_filename, ticket_subject, NULL);
if(!ticket_read(ticket_filename, &ct)) {
free(esubject);
return -1;
}
if(strcmp(esubject, ct.subject) == 0 || strcmp(chirp_super_user, subject) == 0) {
size_t n;
int replaced = 0;
for(n = 0; n < ct.nrights; n++) {
if(strcmp(ct.rights[n].directory, path) == 0) {
free(ct.rights[n].acl);
ct.rights[n].acl = xxstrdup(chirp_acl_flags_to_text(flags)); /* replace old acl mask */
replaced = 1;
}
}
if(!replaced) {
char directory[CHIRP_PATH_MAX];
assert(strlen(path));
ct.rights = xxrealloc(ct.rights, sizeof(*ct.rights) * (++ct.nrights) + 1);
path_collapse(path, directory, 1);
ct.rights[ct.nrights - 1].directory = xxstrdup(directory);
ct.rights[ct.nrights - 1].acl = xxstrdup(chirp_acl_flags_to_text(flags));
}
status = ticket_write(ticket_filename, &ct);
} else {
errno = EACCES;
status = -1;
}
chirp_ticket_free(&ct);
free(esubject);
return status;
}
void update_ticket_state(struct ticket_config *tk, struct booth_site *sender)
{
if (tk->state == ST_CANDIDATE) {
tk_log_info("learned from %s about "
"newer ticket, stopping elections",
site_string(sender));
/* there could be rejects coming from others; don't log
* warnings unnecessarily */
tk->expect_more_rejects = 1;
}
if (tk->leader == local || tk->is_granted) {
/* message from a live leader with valid ticket? */
if (sender == tk->leader && term_time_left(tk)) {
if (tk->is_granted) {
tk_log_warn("ticket was granted here, "
"but it's live at %s (revoking here)",
site_string(sender));
} else {
tk_log_info("ticket live at %s",
site_string(sender));
}
disown_ticket(tk);
ticket_write(tk);
set_state(tk, ST_FOLLOWER);
set_next_state(tk, ST_FOLLOWER);
} else {
if (tk->state == ST_CANDIDATE) {
set_state(tk, ST_FOLLOWER);
}
set_next_state(tk, ST_LEADER);
}
} else {
if (!tk->leader || tk->leader == no_leader) {
if (sender)
tk_log_info("ticket is not granted");
else
tk_log_info("ticket is not granted (from CIB)");
set_state(tk, ST_INIT);
} else {
if (sender)
tk_log_info("ticket granted to %s (says %s)",
site_string(tk->leader),
tk->leader == sender ? "they" : site_string(sender));
else
tk_log_info("ticket granted to %s (from CIB)",
site_string(tk->leader));
set_state(tk, ST_FOLLOWER);
/* just make sure that we check the ticket soon */
set_next_state(tk, ST_FOLLOWER);
}
}
}
static int process_VOTE_FOR(
struct ticket_config *tk,
struct booth_site *sender,
struct booth_site *leader,
struct boothc_ticket_msg *msg
)
{
if (leader == no_leader) {
/* leader wants to step down? */
if (sender == tk->leader &&
(tk->state == ST_FOLLOWER || tk->state == ST_CANDIDATE)) {
tk_log_info("%s wants to give the ticket away (ticket release)",
site_string(tk->leader));
save_committed_tkt(tk);
reset_ticket(tk);
set_state(tk, ST_FOLLOWER);
if (local->type == SITE) {
ticket_write(tk);
schedule_election(tk, OR_STEPDOWN);
}
} else {
tk_log_info("%s votes for none, ignoring (duplicate ticket release?)",
site_string(sender));
}
return 0;
}
if (tk->state != ST_CANDIDATE) {
/* lost candidate status, somebody rejected our proposal */
tk_log_info("candidate status lost, ignoring VtFr from %s",
site_string(sender));
return 0;
}
if (term_too_low(tk, sender, leader, msg))
return 0;
if (newer_term(tk, sender, leader, msg, 0)) {
clear_election(tk);
}
record_vote(tk, sender, leader);
/* only if all voted can we take the ticket now, otherwise
* wait for timeout in ticket_cron */
if (!tk->acks_expected) {
/* §5.2 */
elections_end(tk);
}
return 0;
}
static void become_follower(struct ticket_config *tk,
struct boothc_ticket_msg *msg)
{
copy_ticket_from_msg(tk, msg);
set_state(tk, ST_FOLLOWER);
time_reset(&tk->delay_commit);
tk->in_election = 0;
/* if we're following and the ticket was granted here
* then commit to CIB right away (we're probably restarting)
*/
if (tk->is_granted) {
disown_ticket(tk);
ticket_write(tk);
}
}
static void ext_prog_failed(struct ticket_config *tk,
int start_election)
{
/* Give it to somebody else.
* Just send a VOTE_FOR message, so the
* others can start elections. */
if (leader_and_valid(tk)) {
save_committed_tkt(tk);
reset_ticket(tk);
ticket_write(tk);
if (start_election) {
ticket_broadcast(tk, OP_VOTE_FOR, OP_REQ_VOTE, RLT_SUCCESS, OR_LOCAL_FAIL);
}
}
}
