// When a thread exits, we also want to free its hashtable. We don't want to free the hashtable if we are just
// reinitializing the thread, since we want to keep the health status that causes those reinitializations
static void session_destroy(void *s) {
pthread_mutex_lock(&saint_state_mutex);
try_release_request_outstanding();
pthread_mutex_unlock(&saint_state_mutex);
session_cleanup(s);
g_hash_table_destroy(node_status.node_hash_table);
}
static void cli_dropbear_exit(int exitcode, const char* format, va_list param) {
char fmtbuf[300];
char exitmsg[500];
if (!sessinitdone) {
snprintf(fmtbuf, sizeof(fmtbuf), "Exited: %s",
format);
} else {
snprintf(fmtbuf, sizeof(fmtbuf),
"Connection to %s@%s:%s exited: %s",
cli_opts.username, cli_opts.remotehost,
cli_opts.remoteport, format);
}
/* Arguments to the exit printout may be unsafe to use after session_cleanup() */
vsnprintf(exitmsg, sizeof(exitmsg), fmtbuf, param);
/* Do the cleanup first, since then the terminal will be reset */
session_cleanup();
/* Avoid printing onwards from terminal cruft */
fprintf(stderr, "\n");
dropbear_log(LOG_INFO, "%s", exitmsg);;
exit(exitcode);
}
static void cli_dropbear_exit(int exitcode, const char* format, va_list param) {
char exitmsg[150];
char fullmsg[300];
/* Note that exit message must be rendered before session cleanup */
/* Render the formatted exit message */
vsnprintf(exitmsg, sizeof(exitmsg), format, param);
/* Add the prefix depending on session/auth state */
if (!sessinitdone) {
snprintf(fullmsg, sizeof(fullmsg), "Exited: %s", exitmsg);
} else {
snprintf(fullmsg, sizeof(fullmsg),
"Connection to %s@%s:%s exited: %s",
cli_opts.username, cli_opts.remotehost,
cli_opts.remoteport, exitmsg);
}
/* Do the cleanup first, since then the terminal will be reset */
session_cleanup();
/* Avoid printing onwards from terminal cruft */
fprintf(stderr, "\n");
dropbear_log(LOG_INFO, "%s", fullmsg);
exit(exitcode);
}
/* failure exit - format must be <= 100 chars */
static void _dropbear_exit(int exitcode, const char* format, va_list param) {
char fmtbuf[200];
if (!sessinitdone) {
/* before session init */
snprintf(fmtbuf, sizeof(fmtbuf),
"premature exit: %s", format);
} else if (ses.authstate.authdone) {
/* user has authenticated */
snprintf(fmtbuf, sizeof(fmtbuf),
"exit after auth (%s): %s",
ses.authstate.printableuser, format);
} else if (ses.authstate.printableuser) {
/* we have a potential user */
snprintf(fmtbuf, sizeof(fmtbuf),
"exit before auth (user '%s', %d fails): %s",
ses.authstate.printableuser, ses.authstate.failcount, format);
} else {
/* before userauth */
snprintf(fmtbuf, sizeof(fmtbuf),
"exit before auth: %s", format);
}
_dropbear_log(LOG_INFO, fmtbuf, param);
/* must be after using username etc */
session_cleanup();
exit(exitcode);
}
/* failure exit - format must be <= 100 chars */
static void _dropbear_exit(int exitcode, const char* format, va_list param) {
char fmtbuf[200];
if (!sessinitdone) {
/* before session init */
snprintf(fmtbuf, sizeof(fmtbuf), "exited: %s", format);
} else if (ses.authstate.authdone) {
/* user has authenticated */
snprintf(fmtbuf, sizeof(fmtbuf),
"exited after userauth (%s) from %s: %s",
ses.authstate.printableuser, ses.addrstring, format);
} else {
/* before userauth */
snprintf(fmtbuf, sizeof(fmtbuf), "exited before userauth: %s",
format);
}
// brcm commented next line
//_dropbear_log(LOG_INFO, fmtbuf, param);
/* must be after using username etc */
session_cleanup();
exit(exitcode);
}
static void delete_session(CURL *session, bool tmp_session) {
log_print(LOG_INFO, SECTION_SESSION_DEFAULT, "delete_session: destroying old handle and creating a new one");
if (tmp_session) {
delete_tmp_session(session);
}
else {
session_cleanup(session);
}
}
/* failure exit - format must be <= 100 chars */
void svr_dropbear_exit(int exitcode, const char* format, va_list param) {
char fmtbuf[300];
int i;
if (!sessinitdone) {
/* before session init */
snprintf(fmtbuf, sizeof(fmtbuf),
"Early exit: %s", format);
} else if (ses.authstate.authdone) {
/* user has authenticated */
snprintf(fmtbuf, sizeof(fmtbuf),
"Exit (%s): %s",
ses.authstate.pw_name, format);
} else if (ses.authstate.pw_name) {
/* we have a potential user */
snprintf(fmtbuf, sizeof(fmtbuf),
"Exit before auth (user '%s', %d fails): %s",
ses.authstate.pw_name, ses.authstate.failcount, format);
} else {
/* before userauth */
snprintf(fmtbuf, sizeof(fmtbuf),
"Exit before auth: %s", format);
}
_dropbear_log(LOG_INFO, fmtbuf, param);
#ifdef USE_VFORK
/* For uclinux only the main server process should cleanup - we don't want
* forked children doing that */
if (svr_ses.server_pid == getpid())
#endif
{
/* must be after we've done with username etc */
session_cleanup();
}
if (svr_opts.hostkey) {
sign_key_free(svr_opts.hostkey);
svr_opts.hostkey = NULL;
}
for (i = 0; i < DROPBEAR_MAX_PORTS; i++) {
m_free(svr_opts.addresses[i]);
m_free(svr_opts.ports[i]);
}
exit(exitcode);
}
static CURL *update_session(bool tmp_session) {
static const char *funcname = "update_session";
CURL *session = NULL;
// We only need a new addr_table if we need a new session, and if we call update_session,
// we need a new session
GHashTable *addr_table;
addr_table = create_new_addr_table();
// On getaddrinfo failure, NULL gets returned; pass it through
if (addr_table == NULL) return NULL;
// create the hash table of node addresses for which we will keep health status
// We do this when the thread is initialized. We want the hashtable to survive reinitialization of the handle,
// since the hashtable keeps track of the health status of connections causing the reinitialization
log_print(LOG_INFO, SECTION_SESSION_DEFAULT, "Opening cURL session");
// if tmp_session, we need to get a new session for this request; otherwise see if we already have a session
if (!tmp_session) {
session = pthread_getspecific(session_tsd_key);
if (session) {
log_print(LOG_CRIT, SECTION_SESSION_DEFAULT, "%s: Got unexpected already-existing session; deleting: %p", funcname, session);
session_cleanup(session);
}
}
session = curl_easy_init();
if (!session) {
log_print(LOG_CRIT, SECTION_SESSION_DEFAULT, "%s: curl_easy_init returns NULL", funcname);
return NULL;
}
// We don't want a tmp session to muck with start time and resetting the main session
if (!tmp_session) {
// Keep track of start time so we can track how long sessions stay open
session_start_time = time(NULL);
pthread_setspecific(session_tsd_key, session);
log_print(LOG_INFO, SECTION_SESSION_DEFAULT, "%s: new session: %p", funcname, session);
update_session_count(true);
}
log_print(LOG_DEBUG, SECTION_SESSION_DEFAULT, "%s: construct_resolve_slist: addr_table (%p)", funcname, addr_table);
construct_resolve_slist(addr_table);
g_hash_table_destroy(addr_table);
return session;
}
void cleanup(void)
{
msg_log(MSG_MESSAGE, "Cleanup...\n");
session_cleanup();
dish_file_state_cleanup();
midi_stop();
driver_stop();
patch_shutdown();
mixer_shutdown();
settings_write();
settings_free();
free_instance_name();
mod_src_destroy();
msg_log(MSG_MESSAGE, "Goodbye!\n");
exit(0);
}
static bool needs_new_session(bool tmp_session) {
CURL *session;
const char *funcname = "needs_new_session";
bool new_session = false;
// Short circuit on tmp_session; we always need a new session
if (tmp_session) {
log_print(LOG_INFO, SECTION_SESSION_DEFAULT, "%s: tmp_session is true", funcname);
return true;
}
// session is null
pthread_once(&session_once, session_tsd_key_init);
session = pthread_getspecific(session_tsd_key);
log_print(LOG_DEBUG, SECTION_SESSION_DEFAULT, "%s?: session (%p)", funcname, session);
if (!session) {
log_print(LOG_NOTICE, SECTION_SESSION_DEFAULT, "%s: !session", funcname);
new_session = true;
}
// no slist
else if (!valid_slist()) {
log_print(LOG_NOTICE, SECTION_SESSION_DEFAULT, "%s: !valid_slist", funcname);
new_session = true;
}
// timeout
else if (slist_timed_out()) {
log_print(LOG_INFO, SECTION_SESSION_DEFAULT, "%s: slist_timed_out", funcname);
new_session = true;
}
// We're going to create a new session, so get rid of the old
if (new_session) {
session_cleanup(session);
}
return new_session;
}
static void cli_dropbear_exit(int exitcode, const char* format, va_list param) {
char fmtbuf[300];
if (!sessinitdone) {
snprintf(fmtbuf, sizeof(fmtbuf), "Exited: %s",
format);
} else {
snprintf(fmtbuf, sizeof(fmtbuf),
"Connection to %s@%s:%s exited: %s",
cli_opts.username, cli_opts.remotehost,
cli_opts.remoteport, format);
}
/* Do the cleanup first, since then the terminal will be reset */
session_cleanup();
_dropbear_log(LOG_INFO, fmtbuf, param);
exit(exitcode);
}
