/*
* OpenVPN -- An application to securely tunnel IP networks
* over a single TCP/UDP port, with support for SSL/TLS-based
* session authentication and key exchange,
* packet encryption, packet authentication, and
* packet compression.
*
* Copyright (C) 2002-2010 OpenVPN Technologies, Inc. <sales@openvpn.net>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program (see the file COPYING included with this
* distribution); if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "syshead.h"
#ifdef ENABLE_MANAGEMENT
#include "error.h"
#include "fdmisc.h"
#include "options.h"
#include "sig.h"
#include "event.h"
#include "otime.h"
#include "integer.h"
#include "misc.h"
#include "ssl.h"
#include "common.h"
#include "manage.h"
#include "memdbg.h"
#ifdef ENABLE_PKCS11
#include "pkcs11.h"
#endif
#define MANAGEMENT_ECHO_PULL_INFO 0
#if MANAGEMENT_ECHO_PULL_INFO
#define MANAGEMENT_ECHO_FLAGS LOG_PRINT_INTVAL
#else
#define MANAGEMENT_ECHO_FLAGS 0
#endif
/* tag for blank username/password */
static const char blank_up[] = "[[BLANK]]";
struct management *management; /* GLOBAL */
/* static forward declarations */
static void man_output_standalone (struct management *man, volatile int *signal_received);
static void man_reset_client_socket (struct management *man, const bool exiting);
static void
man_help ()
{
msg (M_CLIENT, "Management Interface for %s", title_string);
msg (M_CLIENT, "Commands:");
msg (M_CLIENT, "auth-retry t : Auth failure retry mode (none,interact,nointeract).");
msg (M_CLIENT, "bytecount n : Show bytes in/out, update every n secs (0=off).");
msg (M_CLIENT, "echo [on|off] [N|all] : Like log, but only show messages in echo buffer.");
msg (M_CLIENT, "exit|quit : Close management session.");
msg (M_CLIENT, "forget-passwords : Forget passwords entered so far.");
msg (M_CLIENT, "help : Print this message.");
msg (M_CLIENT, "hold [on|off|release] : Set/show hold flag to on/off state, or");
msg (M_CLIENT, " release current hold and start tunnel.");
msg (M_CLIENT, "kill cn : Kill the client instance(s) having common name cn.");
msg (M_CLIENT, "kill IP:port : Kill the client instance connecting from IP:port.");
msg (M_CLIENT, "load-stats : Show global server load stats.");
msg (M_CLIENT, "log [on|off] [N|all] : Turn on/off realtime log display");
msg (M_CLIENT, " + show last N lines or 'all' for entire history.");
msg (M_CLIENT, "mute [n] : Set log mute level to n, or show level if n is absent.");
msg (M_CLIENT, "needok type action : Enter confirmation for NEED-OK request of 'type',");
msg (M_CLIENT, " where action = 'ok' or 'cancel'.");
msg (M_CLIENT, "needstr type action : Enter confirmation for NEED-STR request of 'type',");
msg (M_CLIENT, " where action is reply string.");
msg (M_CLIENT, "net : (Windows only) Show network info and routing table.");
msg (M_CLIENT, "password type p : Enter password p for a queried OpenVPN password.");
msg (M_CLIENT, "pid : Show process ID of the current OpenVPN process.");
#ifdef ENABLE_PKCS11
msg (M_CLIENT, "pkcs11-id-count : Get number of available PKCS#11 identities.");
msg (M_CLIENT, "pkcs11-id-get index : Get PKCS#11 identity at index.");
#endif
#ifdef MANAGEMENT_DEF_AUTH
msg (M_CLIENT, "client-auth CID KID : Authenticate client-id/key-id CID/KID (MULTILINE)");
msg (M_CLIENT, "client-auth-nt CID KID : Authenticate client-id/key-id CID/KID");
msg (M_CLIENT, "client-deny CID KID R [CR] : Deny auth client-id/key-id CID/KID with log reason");
msg (M_CLIENT, " text R and optional client reason text CR");
msg (M_CLIENT, "client-kill CID : Kill client instance CID");
msg (M_CLIENT, "env-filter [level] : Set env-var filter level");
#ifdef MANAGEMENT_PF
msg (M_CLIENT, "client-pf CID : Define packet filter for client CID (MULTILINE)");
#endif
#endif
msg (M_CLIENT, "signal s : Send signal s to daemon,");
msg (M_CLIENT, " s = SIGHUP|SIGTERM|SIGUSR1|SIGUSR2.");
msg (M_CLIENT, "state [on|off] [N|all] : Like log, but show state history.");
msg (M_CLIENT, "status [n] : Show current daemon status info using format #n.");
msg (M_CLIENT, "test n : Produce n lines of output for testing/debugging.");
msg (M_CLIENT, "username type u : Enter username u for a queried OpenVPN username.");
msg (M_CLIENT, "verb [n] : Set log verbosity level to n, or show if n is absent.");
msg (M_CLIENT, "version : Show current version number.");
#if HTTP_PROXY_FALLBACK
msg (M_CLIENT, "http-proxy-fallback <server> <port> [flags] : Enter dynamic HTTP proxy fallback info.");
msg (M_CLIENT, "http-proxy-fallback-disable : Disable HTTP proxy fallback.");
#endif
msg (M_CLIENT, "END");
}
static const char *
man_state_name (const int state)
{
switch (state)
{
case OPENVPN_STATE_INITIAL:
return "INITIAL";
case OPENVPN_STATE_CONNECTING:
return "CONNECTING";
case OPENVPN_STATE_WAIT:
return "WAIT";
case OPENVPN_STATE_AUTH:
return "AUTH";
case OPENVPN_STATE_GET_CONFIG:
return "GET_CONFIG";
case OPENVPN_STATE_ASSIGN_IP:
return "ASSIGN_IP";
case OPENVPN_STATE_ADD_ROUTES:
return "ADD_ROUTES";
case OPENVPN_STATE_CONNECTED:
return "CONNECTED";
case OPENVPN_STATE_RECONNECTING:
return "RECONNECTING";
case OPENVPN_STATE_EXITING:
return "EXITING";
case OPENVPN_STATE_RESOLVE:
return "RESOLVE";
case OPENVPN_STATE_TCP_CONNECT:
return "TCP_CONNECT";
default:
return "?";
}
}
static void
man_welcome (struct management *man)
{
msg (M_CLIENT, ">INFO:OpenVPN Management Interface Version %d -- type 'help' for more info",
MANAGEMENT_VERSION);
if (man->persist.special_state_msg)
msg (M_CLIENT, "%s", man->persist.special_state_msg);
}
static inline bool
man_password_needed (struct management *man)
{
return man->settings.up.defined && !man->connection.password_verified;
}
static void
man_check_password (struct management *man, const char *line)
{
if (man_password_needed (man))
{
if (streq (line, man->settings.up.password))
{
man->connection.password_verified = true;
msg (M_CLIENT, "SUCCESS: password is correct");
man_welcome (man);
}
else
{
man->connection.password_verified = false;
msg (M_CLIENT, "ERROR: bad password");
if (++man->connection.password_tries >= MANAGEMENT_N_PASSWORD_RETRIES)
{
msg (M_WARN, "MAN: client connection rejected after %d failed password attempts",
MANAGEMENT_N_PASSWORD_RETRIES);
man->connection.halt = true;
}
}
}
}
static void
man_update_io_state (struct management *man)
{
if (socket_defined (man->connection.sd_cli))
{
if (buffer_list_defined (man->connection.out))
{
man->connection.state = MS_CC_WAIT_WRITE;
}
else
{
man->connection.state = MS_CC_WAIT_READ;
}
}
}
static void
man_output_list_push_finalize (struct management *man)
{
if (management_connected (man))
{
man_update_io_state (man);
if (!man->persist.standalone_disabled)
{
volatile int signal_received = 0;
man_output_standalone (man, &signal_received);
}
}
}
static void
man_output_list_push_str (struct management *man, const char *str)
{
if (management_connected (man) && str)
{
buffer_list_push (man->connection.out, (const unsigned char *) str);
}
}
static void
man_output_list_push (struct management *man, const char *str)
{
man_output_list_push_str (man, str);
man_output_list_push_finalize (man);
}
static void
man_prompt (struct management *man)
{
if (man_password_needed (man))
man_output_list_push (man, "ENTER PASSWORD:");
#if 0 /* should we use prompt? */
else
man_output_list_push (man, ">");
#endif
}
static void
man_delete_unix_socket (struct management *man)
{
#if UNIX_SOCK_SUPPORT
if ((man->settings.flags & (MF_UNIX_SOCK|MF_CONNECT_AS_CLIENT)) == MF_UNIX_SOCK)
socket_delete_unix (&man->settings.local_unix);
#endif
}
static void
man_close_socket (struct management *man, const socket_descriptor_t sd)
{
#ifndef WIN32
/*
* Windows doesn't need this because the ne32 event is permanently
* enabled at struct management scope.
*/
if (man->persist.callback.delete_event)
(*man->persist.callback.delete_event) (man->persist.callback.arg, sd);
#endif
openvpn_close_socket (sd);
}
static void
virtual_output_callback_func (void *arg, const unsigned int flags, const char *str)
{
struct management *man = (struct management *) arg;
static int recursive_level = 0; /* GLOBAL */
bool did_push = false;
if (!recursive_level) /* don't allow recursion */
{
struct gc_arena gc = gc_new ();
struct log_entry e;
const char *out = NULL;
++recursive_level;
CLEAR (e);
update_time ();
e.timestamp = now;
e.u.msg_flags = flags;
e.string = str;
if (flags & M_FATAL)
man->persist.standalone_disabled = false;
if (flags != M_CLIENT)
log_history_add (man->persist.log, &e);
if (!man_password_needed (man))
{
if (flags == M_CLIENT)
out = log_entry_print (&e, LOG_PRINT_CRLF, &gc);
else if (man->connection.log_realtime)
out = log_entry_print (&e, LOG_PRINT_INT_DATE
| LOG_PRINT_MSG_FLAGS
| LOG_PRINT_LOG_PREFIX
| LOG_PRINT_CRLF, &gc);
if (out)
{
man_output_list_push_str (man, out);
did_push = true;
}
if (flags & M_FATAL)
{
out = log_entry_print (&e, LOG_FATAL_NOTIFY|LOG_PRINT_CRLF, &gc);
if (out)
{
man_output_list_push_str (man, out);
did_push = true;
man_reset_client_socket (man, true);
}
}
}
--recursive_level;
gc_free (&gc);
}
if (did_push)
man_output_list_push_finalize (man);
}
/*
* Given a signal, return the signal with possible remapping applied,
* or -1 if the signal should be ignored.
*/
static int
man_mod_signal (const struct management *man, const int signum)
{
const unsigned int flags = man->settings.mansig;
int s = signum;
if (s == SIGUSR1)
{
if (flags & MANSIG_MAP_USR1_TO_HUP)
s = SIGHUP;
if (flags & MANSIG_MAP_USR1_TO_TERM)
s = SIGTERM;
}
if (flags & MANSIG_IGNORE_USR1_HUP)
{
if (s == SIGHUP || s == SIGUSR1)
s = -1;
}
return s;
}
static void
man_signal (struct management *man, const char *name)
{
const int sig = parse_signal (name);
if (sig >= 0)
{
const int sig_mod = man_mod_signal (man, sig);
if (sig_mod >= 0)
{
throw_signal (sig_mod);
msg (M_CLIENT, "SUCCESS: signal %s thrown", signal_name (sig_mod, true));
}
else
{
if (man->persist.special_state_msg)
msg (M_CLIENT, "%s", man->persist.special_state_msg);
else
msg (M_CLIENT, "ERROR: signal '%s' is currently ignored", name);
}
}
else
{
msg (M_CLIENT, "ERROR: signal '%s' is not a known signal type", name);
}
}
static void
man_status (struct management *man, const int version, struct status_output *so)
{
if (man->persist.callback.status)
{
(*man->persist.callback.status) (man->persist.callback.arg, version, so);
}
else
{
msg (M_CLIENT, "ERROR: The 'status' command is not supported by the current daemon mode");
}
}
static void
man_bytecount (struct management *man, const int update_seconds)
{
if (update_seconds >= 0)
man->connection.bytecount_update_seconds = update_seconds;
else
man->connection.bytecount_update_seconds = 0;
msg (M_CLIENT, "SUCCESS: bytecount interval changed");
}
void
man_bytecount_output_client (struct management *man)
{
char in[32];
char out[32];
/* do in a roundabout way to work around possible mingw or mingw-glibc bug */
openvpn_snprintf (in, sizeof (in), counter_format, man->persist.bytes_in);
openvpn_snprintf (out, sizeof (out), counter_format, man->persist.bytes_out);
msg (M_CLIENT, ">BYTECOUNT:%s,%s", in, out);
man->connection.bytecount_last_update = now;
}
#ifdef MANAGEMENT_DEF_AUTH
void
man_bytecount_output_server (struct management *man,
const counter_type *bytes_in_total,
const counter_type *bytes_out_total,
struct man_def_auth_context *mdac)
{
char in[32];
char out[32];
/* do in a roundabout way to work around possible mingw or mingw-glibc bug */
openvpn_snprintf (in, sizeof (in), counter_format, *bytes_in_total);
openvpn_snprintf (out, sizeof (out), counter_format, *bytes_out_total);
msg (M_CLIENT, ">BYTECOUNT_CLI:%lu,%s,%s", mdac->cid, in, out);
mdac->bytecount_last_update = now;
}
#endif
static void
man_kill (struct management *man, const char *victim)
{
struct gc_arena gc = gc_new ();
if (man->persist.callback.kill_by_cn && man->persist.callback.kill_by_addr)
{
struct buffer buf;
char p1[128];
char p2[128];
int n_killed;
buf_set_read (&buf, (uint8_t*) victim, strlen (victim) + 1);
buf_parse (&buf, ':', p1, sizeof (p1));
buf_parse (&buf, ':', p2, sizeof (p2));
if (strlen (p1) && strlen (p2))
{
/* IP:port specified */
bool status;
const in_addr_t addr = getaddr (GETADDR_HOST_ORDER|GETADDR_MSG_VIRT_OUT, p1, 0, &status, NULL);
if (status)
{
const int port = atoi (p2);
if (port > 0 && port < 65536)
{
n_killed = (*man->persist.callback.kill_by_addr) (man->persist.callback.arg, addr, port);
if (n_killed > 0)
{
msg (M_CLIENT, "SUCCESS: %d client(s) at address %s:%d killed",
n_killed,
print_in_addr_t (addr, 0, &gc),
port);
}
else
{
msg (M_CLIENT, "ERROR: client at address %s:%d not found",
print_in_addr_t (addr, 0, &gc),
port);
}
}
else
{
msg (M_CLIENT, "ERROR: port number is out of range: %s", p2);
}
}
else
{
msg (M_CLIENT, "ERROR: error parsing IP address: %s", p1);
}
}
else if (strlen (p1))
{
/* common name specified */
n_killed = (*man->persist.callback.kill_by_cn) (man->persist.callback.arg, p1);
if (n_killed > 0)
{
msg (M_CLIENT, "SUCCESS: common name '%s' found, %d client(s) killed", p1, n_killed);
}
else
{
msg (M_CLIENT, "ERROR: common name '%s' not found", p1);
}
}
else
{
msg (M_CLIENT, "ERROR: kill parse");
}
}
else
{
msg (M_CLIENT, "ERROR: The 'kill' command is not supported by the current daemon mode");
}
gc_free (&gc);
}
/*
* General-purpose history command handler
* for the log and echo commands.
*/
static void
man_history (struct management *man,
const char *parm,
const char *type,
struct log_history *log,
bool *realtime,
const unsigned int lep_flags)
{
struct gc_arena gc = gc_new ();
int n = 0;
if (streq (parm, "on"))
{
*realtime = true;
msg (M_CLIENT, "SUCCESS: real-time %s notification set to ON", type);
}
else if (streq (parm, "off"))
{
*realtime = false;
msg (M_CLIENT, "SUCCESS: real-time %s notification set to OFF", type);
}
else if (streq (parm, "all") || (n = atoi (parm)) > 0)
{
const int size = log_history_size (log);
const int start = (n ? n : size) - 1;
int i;
for (i = start; i >= 0; --i)
{
const struct log_entry *e = log_history_ref (log, i);
if (e)
{
const char *out = log_entry_print (e, lep_flags, &gc);
virtual_output_callback_func (man, M_CLIENT, out);
}
}
msg (M_CLIENT, "END");
}
else
{
msg (M_CLIENT, "ERROR: %s parameter must be 'on' or 'off' or some number n or 'all'", type);
}
gc_free (&gc);
}
static void
man_log (struct management *man, const char *parm)
{
man_history (man,
parm,
"log",
man->persist.log,
&man->connection.log_realtime,
LOG_PRINT_INT_DATE|LOG_PRINT_MSG_FLAGS);
}
static void
man_echo (struct management *man, const char *parm)
{
man_history (man,
parm,
"echo",
man->persist.echo,
&man->connection.echo_realtime,
LOG_PRINT_INT_DATE|MANAGEMENT_ECHO_FLAGS);
}
static void
man_state (struct management *man, const char *parm)
{
man_history (man,
parm,
"state",
man->persist.state,
&man->connection.state_realtime,
LOG_PRINT_INT_DATE|LOG_PRINT_STATE|
LOG_PRINT_LOCAL_IP|LOG_PRINT_REMOTE_IP);
}
static void
man_up_finalize (struct management *man)
{
switch (man->connection.up_query_mode)
{
case UP_QUERY_DISABLED:
man->connection.up_query.defined = false;
break;
case UP_QUERY_USER_PASS:
if (strlen (man->connection.up_query.username) && strlen (man->connection.up_query.password))
man->connection.up_query.defined = true;
break;
case UP_QUERY_PASS:
if (strlen (man->connection.up_query.password))
man->connection.up_query.defined = true;
break;
case UP_QUERY_NEED_OK:
if (strlen (man->connection.up_query.password))
man->connection.up_query.defined = true;
break;
case UP_QUERY_NEED_STR:
if (strlen (man->connection.up_query.password))
man->connection.up_query.defined = true;
break;
default:
ASSERT (0);
}
}
static void
man_query_user_pass (struct management *man,
const char *type,
const char *string,
const bool needed,
const char *prompt,
char *dest,
int len)
{
if (needed)
{
ASSERT (man->connection.up_query_type);
if (streq (man->connection.up_query_type, type))
{
strncpynt (dest, string, len);
man_up_finalize (man);
msg (M_CLIENT, "SUCCESS: '%s' %s entered, but not yet verified",
type,
prompt);
}
else
msg (M_CLIENT, "ERROR: %s of type '%s' entered, but we need one of type '%s'",
prompt,
type,
man->connection.up_query_type);
}
else
{
msg (M_CLIENT, "ERROR: no %s is currently needed at this time", prompt);
}
}
static void
man_query_username (struct management *man, const char *type, const char *string)
{
const bool needed = (man->connection.up_query_mode == UP_QUERY_USER_PASS && man->connection.up_query_type);
man_query_user_pass (man, type, string, needed, "username", man->connection.up_query.username, USER_PASS_LEN);
}
static void
man_query_password (struct management *man, const char *type, const char *string)
{
const bool needed = ((man->connection.up_query_mode == UP_QUERY_USER_PASS
|| man->connection.up_query_mode == UP_QUERY_PASS)
&& man->connection.up_query_type);
if (!string[0]) /* allow blank passwords to be passed through using the blank_up tag */
string = blank_up;
man_query_user_pass (man, type, string, needed, "password", man->connection.up_query.password, USER_PASS_LEN);
}
static void
man_query_need_ok (struct management *man, const char *type, const char *action)
{
const bool needed = ((man->connection.up_query_mode == UP_QUERY_NEED_OK) && man->connection.up_query_type);
man_query_user_pass (man, type, action, needed, "needok-confirmation", man->connection.up_query.password, USER_PASS_LEN);
}
static void
man_query_need_str (struct management *man, const char *type, const char *action)
{
const bool needed = ((man->connection.up_query_mode == UP_QUERY_NEED_STR) && man->connection.up_query_type);
man_query_user_pass (man, type, action, needed, "needstr-string", man->connection.up_query.password, USER_PASS_LEN);
}
static void
man_forget_passwords (struct management *man)
{
#if defined(USE_CRYPTO) && defined(USE_SSL)
ssl_purge_auth ();
msg (M_CLIENT, "SUCCESS: Passwords were forgotten");
#endif
}
static void
man_net (struct management *man)
{
if (man->persist.callback.show_net)
{
(*man->persist.callback.show_net) (man->persist.callback.arg, M_CLIENT);
}
else
{
msg (M_CLIENT, "ERROR: The 'net' command is not supported by the current daemon mode");
}
}
#ifdef ENABLE_PKCS11
static void
man_pkcs11_id_count (struct management *man)
{
msg (M_CLIENT, ">PKCS11ID-COUNT:%d", pkcs11_management_id_count ());
}
static void
man_pkcs11_id_get (struct management *man, const int index)
{
char *id = NULL;
char *base64 = NULL;
if (pkcs11_management_id_get (index, &id, &base64))
msg (M_CLIENT, ">PKCS11ID-ENTRY:'%d', ID:'%s', BLOB:'%s'", index, id, base64);
else
msg (M_CLIENT, ">PKCS11ID-ENTRY:'%d'", index);
if (id != NULL)
free (id);
if (base64 != NULL)
free (base64);
}
#endif
static void
man_hold (struct management *man, const char *cmd)
{
if (cmd)
{
if (streq (cmd, "on"))
{
man->settings.flags |= MF_HOLD;
msg (M_CLIENT, "SUCCESS: hold flag set to ON");
}
else if (streq (cmd, "off"))
{
man->settings.flags &= ~MF_HOLD;
msg (M_CLIENT, "SUCCESS: hold flag set to OFF");
}
else if (streq (cmd, "release"))
{
man->persist.hold_release = true;
msg (M_CLIENT, "SUCCESS: hold release succeeded");
}
else
{
msg (M_CLIENT, "ERROR: bad hold command parameter");
}
}
else
msg (M_CLIENT, "SUCCESS: hold=%d", BOOL_CAST(man->settings.flags & MF_HOLD));
}
#ifdef MANAGEMENT_DEF_AUTH
static bool
parse_cid (const char *str, unsigned long *cid)
{
if (sscanf (str, "%lu", cid) == 1)
return true;
else
{
msg (M_CLIENT, "ERROR: cannot parse CID");
return false;
}
}
static bool
parse_kid (const char *str, unsigned int *kid)
{
if (sscanf (str, "%u", kid) == 1)
return true;
else
{
msg (M_CLIENT, "ERROR: cannot parse KID");
return false;
}
}
static void
in_extra_reset (struct man_connection *mc, const bool new)
{
if (mc)
{
if (!new)
{
mc->in_extra_cmd = IEC_UNDEF;
mc->in_extra_cid = 0;
mc->in_extra_kid = 0;
}
if (mc->in_extra)
{
buffer_list_free (mc->in_extra);
mc->in_extra = NULL;
}
if (new)
mc->in_extra = buffer_list_new (0);
}
}
static void
in_extra_dispatch (struct management *man)
{
switch (man->connection.in_extra_cmd)
{
case IEC_CLIENT_AUTH:
if (man->persist.callback.client_auth)
{
const bool status = (*man->persist.callback.client_auth)
(man->persist.callback.arg,
man->connection.in_extra_cid,
man->connection.in_extra_kid,
true,
NULL,
NULL,
man->connection.in_extra);
man->connection.in_extra = NULL;
if (status)
{
msg (M_CLIENT, "SUCCESS: client-auth command succeeded");
}
else
{
msg (M_CLIENT, "ERROR: client-auth command failed");
}
}
else
{
msg (M_CLIENT, "ERROR: The client-auth command is not supported by the current daemon mode");
}
break;
#ifdef MANAGEMENT_PF
case IEC_CLIENT_PF:
if (man->persist.callback.client_pf)
{
const bool status = (*man->persist.callback.client_pf)
(man->persist.callback.arg,
man->connection.in_extra_cid,
man->connection.in_extra);
man->connection.in_extra = NULL;
if (status)
{
msg (M_CLIENT, "SUCCESS: client-pf command succeeded");
}
else
{
msg (M_CLIENT, "ERROR: client-pf command failed");
}
}
else
{
msg (M_CLIENT, "ERROR: The client-pf command is not supported by the current daemon mode");
}
break;
#endif
}
in_extra_reset (&man->connection, false);
}
static void
man_client_auth (struct management *man, const char *cid_str, const char *kid_str, const bool extra)
{
struct man_connection *mc = &man->connection;
mc->in_extra_cid = 0;
mc->in_extra_kid = 0;
if (parse_cid (cid_str, &mc->in_extra_cid)
&& parse_kid (kid_str, &mc->in_extra_kid))
{
mc->in_extra_cmd = IEC_CLIENT_AUTH;
in_extra_reset (mc, true);
if (!extra)
in_extra_dispatch (man);
}
}
static void
man_client_deny (struct management *man, const char *cid_str, const char *kid_str, const char *reason, const char *client_reason)
{
unsigned long cid = 0;
unsigned int kid = 0;
if (parse_cid (cid_str, &cid) && parse_kid (kid_str, &kid))
{
if (man->persist.callback.client_auth)
{
const bool status = (*man->persist.callback.client_auth)
(man->persist.callback.arg,
cid,
kid,
false,
reason,
client_reason,
NULL);
if (status)
{
msg (M_CLIENT, "SUCCESS: client-deny command succeeded");
}
else
{
msg (M_CLIENT, "ERROR: client-deny command failed");
}
}
else
{
msg (M_CLIENT, "ERROR: The client-deny command is not supported by the current daemon mode");
}
}
}
static void
man_client_kill (struct management *man, const char *cid_str)
{
unsigned long cid = 0;
if (parse_cid (cid_str, &cid))
{
if (man->persist.callback.kill_by_cid)
{
const bool status = (*man->persist.callback.kill_by_cid) (man->persist.callback.arg, cid);
if (status)
{
msg (M_CLIENT, "SUCCESS: client-kill command succeeded");
}
else
{
msg (M_CLIENT, "ERROR: client-kill command failed");
}
}
else
{
msg (M_CLIENT, "ERROR: The client-kill command is not supported by the current daemon mode");
}
}
}
static void
man_client_n_clients (struct management *man)
{
if (man->persist.callback.n_clients)
{
const int nclients = (*man->persist.callback.n_clients) (man->persist.callback.arg);
msg (M_CLIENT, "SUCCESS: nclients=%d", nclients);
}
else
{
msg (M_CLIENT, "ERROR: The nclients command is not supported by the current daemon mode");
}
}
static void
man_env_filter (struct management *man, const int level)
{
man->connection.env_filter_level = level;
msg (M_CLIENT, "SUCCESS: env_filter_level=%d", level);
}
#ifdef MANAGEMENT_PF
static void
man_client_pf (struct management *man, const char *cid_str)
{
struct man_connection *mc = &man->connection;
mc->in_extra_cid = 0;
mc->in_extra_kid = 0;
if (parse_cid (cid_str, &mc->in_extra_cid))
{
mc->in_extra_cmd = IEC_CLIENT_PF;
in_extra_reset (mc, true);
}
}
#endif
#endif
static void
man_load_stats (struct management *man)
{
extern counter_type link_read_bytes_global;
extern counter_type link_write_bytes_global;
int nclients = 0;
if (man->persist.callback.n_clients)
nclients = (*man->persist.callback.n_clients) (man->persist.callback.arg);
msg (M_CLIENT, "SUCCESS: nclients=%d,bytesin=" counter_format ",bytesout=" counter_format,
nclients,
link_read_bytes_global,
link_write_bytes_global);
}
#define MN_AT_LEAST (1<<0)
static bool
man_need (struct management *man, const char **p, const int n, unsigned int flags)
{
int i;
ASSERT (p[0]);
for (i = 1; i <= n; ++i)
{
if (!p[i])
{
msg (M_CLIENT, "ERROR: the '%s' command requires %s%d parameter%s",
p[0],
(flags & MN_AT_LEAST) ? "at least " : "",
n,
n > 1 ? "s" : "");
return false;
}
}
return true;
}
#if HTTP_PROXY_FALLBACK
static void
man_http_proxy_fallback (struct management *man, const char *server, const char *port, const char *flags)
{
if (man->persist.callback.http_proxy_fallback_cmd)
{
const bool status = (*man->persist.callback.http_proxy_fallback_cmd)(man->persist.callback.arg, server, port, flags);
if (status)
{
msg (M_CLIENT, "SUCCESS: proxy-fallback command succeeded");
}
else
{
msg (M_CLIENT, "ERROR: proxy-fallback command failed");
}
}
else
{
msg (M_CLIENT, "ERROR: The proxy-fallback command is not supported by the current daemon mode");
}
}
#endif
static void
man_dispatch_command (struct management *man, struct status_output *so, const char **p, const int nparms)
{
struct gc_arena gc = gc_new ();
ASSERT (p[0]);
if (streq (p[0], "exit") || streq (p[0], "quit"))
{
man->connection.halt = true;
goto done;
}
else if (streq (p[0], "help"))
{
man_help ();
}
else if (streq (p[0], "version"))
{
msg (M_CLIENT, "OpenVPN Version: %s", title_string);
msg (M_CLIENT, "Management Version: %d", MANAGEMENT_VERSION);
msg (M_CLIENT, "END");
}
else if (streq (p[0], "pid"))
{
msg (M_CLIENT, "SUCCESS: pid=%d", openvpn_getpid ());
}
#ifdef MANAGEMENT_DEF_AUTH
else if (streq (p[0], "nclients"))
{
man_client_n_clients (man);
}
else if (streq (p[0], "env-filter"))
{
int level = 0;
if (p[1])
level = atoi (p[1]);
man_env_filter (man, level);
}
#endif
else if (streq (p[0], "signal"))
{
if (man_need (man, p, 1, 0))
man_signal (man, p[1]);
}
else if (streq (p[0], "load-stats"))
{
man_load_stats (man);
}
else if (streq (p[0], "status"))
{
int version = 0;
if (p[1])
version = atoi (p[1]);
man_status (man, version, so);
}
else if (streq (p[0], "kill"))
{
if (man_need (man, p, 1, 0))
man_kill (man, p[1]);
}
else if (streq (p[0], "verb"))
{
if (p[1])
{
const int level = atoi(p[1]);
if (set_debug_level (level, 0))
msg (M_CLIENT, "SUCCESS: verb level changed");
else
msg (M_CLIENT, "ERROR: verb level is out of range");
}
else
msg (M_CLIENT, "SUCCESS: verb=%d", get_debug_level ());
}
else if (streq (p[0], "mute"))
{
if (p[1])
{
const int level = atoi(p[1]);
if (set_mute_cutoff (level))
msg (M_CLIENT, "SUCCESS: mute level changed");
else
msg (M_CLIENT, "ERROR: mute level is out of range");
}
else
msg (M_CLIENT, "SUCCESS: mute=%d", get_mute_cutoff ());
}
else if (streq (p[0], "auth-retry"))
{
#if P2MP
if (p[1])
{
if (auth_retry_set (M_CLIENT, p[1]))
msg (M_CLIENT, "SUCCESS: auth-retry parameter changed");
else
msg (M_CLIENT, "ERROR: bad auth-retry parameter");
}
else
msg (M_CLIENT, "SUCCESS: auth-retry=%s", auth_retry_print ());
#else
msg (M_CLIENT, "ERROR: auth-retry feature is unavailable");
#endif
}
else if (streq (p[0], "state"))
{
if (!p[1])
{
man_state (man, "1");
}
else
{
if (p[1])
man_state (man, p[1]);
if (p[2])
man_state (man, p[2]);
}
}
else if (streq (p[0], "log"))
{
if (man_need (man, p, 1, MN_AT_LEAST))
{
if (p[1])
man_log (man, p[1]);
if (p[2])
man_log (man, p[2]);
}
}
else if (streq (p[0], "echo"))
{
if (man_need (man, p, 1, MN_AT_LEAST))
{
if (p[1])
man_echo (man, p[1]);
if (p[2])
man_echo (man, p[2]);
}
}
else if (streq (p[0], "username"))
{
if (man_need (man, p, 2, 0))
man_query_username (man, p[1], p[2]);
}
else if (streq (p[0], "password"))
{
if (man_need (man, p, 2, 0))
man_query_password (man, p[1], p[2]);
}
else if (streq (p[0], "forget-passwords"))
{
man_forget_passwords (man);
}
else if (streq (p[0], "needok"))
{
if (man_need (man, p, 2, 0))
man_query_need_ok (man, p[1], p[2]);
}
else if (streq (p[0], "needstr"))
{
if (man_need (man, p, 2, 0))
man_query_need_str (man, p[1], p[2]);
}
else if (streq (p[0], "net"))
{
man_net (man);
}
else if (streq (p[0], "hold"))
{
man_hold (man, p[1]);
}
else if (streq (p[0], "bytecount"))
{
if (man_need (man, p, 1, 0))
man_bytecount (man, atoi(p[1]));
}
#ifdef MANAGEMENT_DEF_AUTH
else if (streq (p[0], "client-kill"))
{
if (man_need (man, p, 1, 0))
man_client_kill (man, p[1]);
}
else if (streq (p[0], "client-deny"))
{
if (man_need (man, p, 3, MN_AT_LEAST))
man_client_deny (man, p[1], p[2], p[3], p[4]);
}
else if (streq (p[0], "client-auth-nt"))
{
if (man_need (man, p, 2, 0))
man_client_auth (man, p[1], p[2], false);
}
else if (streq (p[0], "client-auth"))
{
if (man_need (man, p, 2, 0))
man_client_auth (man, p[1], p[2], true);
}
#ifdef MANAGEMENT_PF
else if (streq (p[0], "client-pf"))
{
if (man_need (man, p, 1, 0))
man_client_pf (man, p[1]);
}
#endif
#endif
#ifdef ENABLE_PKCS11
else if (streq (p[0], "pkcs11-id-count"))
{
man_pkcs11_id_count (man);
}
else if (streq (p[0], "pkcs11-id-get"))
{
if (man_need (man, p, 1, 0))
man_pkcs11_id_get (man, atoi(p[1]));
}
#endif
#if HTTP_PROXY_FALLBACK
else if (streq (p[0], "http-proxy-fallback"))
{
if (man_need (man, p, 2, MN_AT_LEAST))
man_http_proxy_fallback (man, p[1], p[2], p[3]);
}
else if (streq (p[0], "http-proxy-fallback-disable"))
{
man_http_proxy_fallback (man, NULL, NULL, NULL);
}
#endif
#if 1
else if (streq (p[0], "test"))
{
if (man_need (man, p, 1, 0))
{
int i;
const int n = atoi (p[1]);
for (i = 0; i < n; ++i)
{
msg (M_CLIENT, "[%d] The purpose of this command is to generate large amounts of output.", i);
}
}
}
#endif
else
{
msg (M_CLIENT, "ERROR: unknown command, enter 'help' for more options");
}
done:
gc_free (&gc);
}
#ifdef WIN32
static void
man_start_ne32 (struct management *man)
{
switch (man->connection.state)
{
case MS_LISTEN:
net_event_win32_start (&man->connection.ne32, FD_ACCEPT, man->connection.sd_top);
break;
case MS_CC_WAIT_READ:
case MS_CC_WAIT_WRITE:
net_event_win32_start (&man->connection.ne32, FD_READ|FD_WRITE|FD_CLOSE, man->connection.sd_cli);
break;
default:
ASSERT (0);
}
}
static void
man_stop_ne32 (struct management *man)
{
net_event_win32_stop (&man->connection.ne32);
}
#endif
static void
man_record_peer_info (struct management *man)
{
struct gc_arena gc = gc_new ();
if (man->settings.write_peer_info_file)
{
bool success = false;
#ifdef HAVE_GETSOCKNAME
if (socket_defined (man->connection.sd_cli))
{
struct sockaddr_in addr;
socklen_t addrlen = sizeof (addr);
int status;
CLEAR (addr);
status = getsockname (man->connection.sd_cli, (struct sockaddr *)&addr, &addrlen);
if (!status && addrlen == sizeof (addr))
{
const in_addr_t a = ntohl (addr.sin_addr.s_addr);
const int p = ntohs (addr.sin_port);
FILE *fp = fopen (man->settings.write_peer_info_file, "w");
if (fp)
{
fprintf (fp, "%s\n%d\n", print_in_addr_t (a, 0, &gc), p);
if (!fclose (fp))
success = true;
}
}
}
#endif
if (!success)
{
msg (D_MANAGEMENT, "MANAGEMENT: failed to write peer info to file %s",
man->settings.write_peer_info_file);
throw_signal_soft (SIGTERM, "management-connect-failed");
}
}
gc_free (&gc);
}
static void
man_connection_settings_reset (struct management *man)
{
man->connection.state_realtime = false;
man->connection.log_realtime = false;
man->connection.echo_realtime = false;
man->connection.bytecount_update_seconds = 0;
man->connection.password_verified = false;
man->connection.password_tries = 0;
man->connection.halt = false;
man->connection.state = MS_CC_WAIT_WRITE;
}
static void
man_new_connection_post (struct management *man, const char *description)
{
struct gc_arena gc = gc_new ();
set_nonblock (man->connection.sd_cli);
set_cloexec (man->connection.sd_cli);
man_connection_settings_reset (man);
#ifdef WIN32
man_start_ne32 (man);
#endif
#if UNIX_SOCK_SUPPORT
if (man->settings.flags & MF_UNIX_SOCK)
{
msg (D_MANAGEMENT, "MANAGEMENT: %s %s",
description,
sockaddr_unix_name (&man->settings.local_unix, "NULL"));
}
else
#endif
msg (D_MANAGEMENT, "MANAGEMENT: %s %s",
description,
print_sockaddr (&man->settings.local, &gc));
buffer_list_reset (man->connection.out);
if (!man_password_needed (man))
man_welcome (man);
man_prompt (man);
man_update_io_state (man);
gc_free (&gc);
}
#if UNIX_SOCK_SUPPORT
static bool
man_verify_unix_peer_uid_gid (struct management *man, const socket_descriptor_t sd)
{
if (socket_defined (sd) && (man->settings.client_uid != -1 || man->settings.client_gid != -1))
{
static const char err_prefix[] = "MANAGEMENT: unix domain socket client connection rejected --";
int uid, gid;
if (unix_socket_get_peer_uid_gid (man->connection.sd_cli, &uid, &gid))
{
if (man->settings.client_uid != -1 && man->settings.client_uid != uid)
{
msg (D_MANAGEMENT, "%s UID of socket peer (%d) doesn't match required value (%d) as given by --management-client-user",
err_prefix, uid, man->settings.client_uid);
return false;
}
if (man->settings.client_gid != -1 && man->settings.client_gid != gid)
{
msg (D_MANAGEMENT, "%s GID of socket peer (%d) doesn't match required value (%d) as given by --management-client-group",
err_prefix, gid, man->settings.client_gid);
return false;
}
}
else
{
msg (D_MANAGEMENT, "%s cannot get UID/GID of socket peer", err_prefix);
return false;
}
}
return true;
}
#endif
static void
man_accept (struct management *man)
{
struct link_socket_actual act;
CLEAR (act);
/*
* Accept the TCP or Unix domain socket client.
*/
#if UNIX_SOCK_SUPPORT
if (man->settings.flags & MF_UNIX_SOCK)
{
struct sockaddr_un remote;
man->connection.sd_cli = socket_accept_unix (man->connection.sd_top, &remote);
if (!man_verify_unix_peer_uid_gid (man, man->connection.sd_cli))
sd_close (&man->connection.sd_cli);
}
else
#endif
man->connection.sd_cli = socket_do_accept (man->connection.sd_top, &act, false);
if (socket_defined (man->connection.sd_cli))
{
man->connection.remote = act.dest;
if (socket_defined (man->connection.sd_top))
{
#ifdef WIN32
man_stop_ne32 (man);
#endif
}
man_new_connection_post (man, "Client connected from");
}
}
static void
man_listen (struct management *man)
{
struct gc_arena gc = gc_new ();
/*
* Initialize state
*/
man->connection.state = MS_LISTEN;
man->connection.sd_cli = SOCKET_UNDEFINED;
/*
* Initialize listening socket
*/
if (man->connection.sd_top == SOCKET_UNDEFINED)
{
#if UNIX_SOCK_SUPPORT
if (man->settings.flags & MF_UNIX_SOCK)
{
man_delete_unix_socket (man);
man->connection.sd_top = create_socket_unix ();
socket_bind_unix (man->connection.sd_top, &man->settings.local_unix, "MANAGEMENT");
}
else
#endif
{
man->connection.sd_top = create_socket_tcp ();
socket_bind (man->connection.sd_top, &man->settings.local, "MANAGEMENT");
}
/*
* Listen for connection
*/
if (listen (man->connection.sd_top, 1))
msg (M_SOCKERR, "MANAGEMENT: listen() failed");
/*
* Set misc socket properties
*/
set_nonblock (man->connection.sd_top);
set_cloexec (man->connection.sd_top);
#if UNIX_SOCK_SUPPORT
if (man->settings.flags & MF_UNIX_SOCK)
{
msg (D_MANAGEMENT, "MANAGEMENT: unix domain socket listening on %s",
sockaddr_unix_name (&man->settings.local_unix, "NULL"));
}
else
#endif
msg (D_MANAGEMENT, "MANAGEMENT: TCP Socket listening on %s",
print_sockaddr (&man->settings.local, &gc));
}
#ifdef WIN32
man_start_ne32 (man);
#endif
gc_free (&gc);
}
static void
man_connect (struct management *man)
{
struct gc_arena gc = gc_new ();
int status;
int signal_received = 0;
/*
* Initialize state
*/
man->connection.state = MS_INITIAL;
man->connection.sd_top = SOCKET_UNDEFINED;
#if UNIX_SOCK_SUPPORT
if (man->settings.flags & MF_UNIX_SOCK)
{
man->connection.sd_cli = create_socket_unix ();
status = socket_connect_unix (man->connection.sd_cli, &man->settings.local_unix);
if (!status && !man_verify_unix_peer_uid_gid (man, man->connection.sd_cli))
{
#ifdef EPERM
status = EPERM;
#else
status = 1;
#endif
sd_close (&man->connection.sd_cli);
}
}
else
#endif
{
man->connection.sd_cli = create_socket_tcp ();
status = openvpn_connect (man->connection.sd_cli,
&man->settings.local,
5,
&signal_received);
}
if (signal_received)
{
throw_signal (signal_received);
goto done;
}
if (status)
{
#if UNIX_SOCK_SUPPORT
if (man->settings.flags & MF_UNIX_SOCK)
{
msg (D_LINK_ERRORS,
"MANAGEMENT: connect to unix socket %s failed: %s",
sockaddr_unix_name (&man->settings.local_unix, "NULL"),
strerror_ts (status, &gc));
}
else
#endif
msg (D_LINK_ERRORS,
"MANAGEMENT: connect to %s failed: %s",
print_sockaddr (&man->settings.local, &gc),
strerror_ts (status, &gc));
throw_signal_soft (SIGTERM, "management-connect-failed");
goto done;
}
man_record_peer_info (man);
man_new_connection_post (man, "Connected to management server at");
done:
gc_free (&gc);
}
static void
man_reset_client_socket (struct management *man, const bool exiting)
{
if (socket_defined (man->connection.sd_cli))
{
#ifdef WIN32
man_stop_ne32 (man);
#endif
man_close_socket (man, man->connection.sd_cli);
man->connection.sd_cli = SOCKET_UNDEFINED;
man->connection.state = MS_INITIAL;
command_line_reset (man->connection.in);
buffer_list_reset (man->connection.out);
#ifdef MANAGEMENT_DEF_AUTH
in_extra_reset (&man->connection, false);
#endif
msg (D_MANAGEMENT, "MANAGEMENT: Client disconnected");
}
if (!exiting)
{
#if defined(USE_CRYPTO) && defined(USE_SSL)
if (man->settings.flags & MF_FORGET_DISCONNECT)
ssl_purge_auth ();
#endif
if (man->settings.flags & MF_SIGNAL) {
int mysig = man_mod_signal (man, SIGUSR1);
if (mysig >= 0)
{
msg (D_MANAGEMENT, "MANAGEMENT: Triggering management signal");
throw_signal_soft (mysig, "management-disconnect");
}
}
if (man->settings.flags & MF_CONNECT_AS_CLIENT)
{
msg (D_MANAGEMENT, "MANAGEMENT: Triggering management exit");
throw_signal_soft (SIGTERM, "management-exit");
}
else
man_listen (man);
}
}
static void
man_process_command (struct management *man, const char *line)
{
struct gc_arena gc = gc_new ();
struct status_output *so;
int nparms;
char *parms[MAX_PARMS+1];
CLEAR (parms);
so = status_open (NULL, 0, -1, &man->persist.vout, 0);
#ifdef MANAGEMENT_DEF_AUTH
in_extra_reset (&man->connection, false);
#endif
if (man_password_needed (man))
{
man_check_password (man, line);
}
else
{
nparms = parse_line (line, parms, MAX_PARMS, "TCP", 0, M_CLIENT, &gc);
if (parms[0] && streq (parms[0], "password"))
msg (D_MANAGEMENT_DEBUG, "MANAGEMENT: CMD 'password [...]'");
else if (!streq (line, "load-stats"))
msg (D_MANAGEMENT_DEBUG, "MANAGEMENT: CMD '%s'", line);
#if 0
/* DEBUGGING -- print args */
{
int i;
for (i = 0; i < nparms; ++i)
msg (M_INFO, "[%d] '%s'", i, parms[i]);
}
#endif
if (nparms > 0)
man_dispatch_command (man, so, (const char **)parms, nparms);
}
CLEAR (parms);
status_close (so);
gc_free (&gc);
}
static bool
man_io_error (struct management *man, const char *prefix)
{
const int err = openvpn_errno_socket ();
if (!ignore_sys_error (err))
{
struct gc_arena gc = gc_new ();
msg (D_MANAGEMENT, "MANAGEMENT: TCP %s error: %s",
prefix,
strerror_ts (err, &gc));
gc_free (&gc);
return true;
}
else
return false;
}
static int
man_read (struct management *man)
{
/*
* read command line from socket
*/
unsigned char buf[256];
int len = 0;
len = recv (man->connection.sd_cli, buf, sizeof (buf), MSG_NOSIGNAL);
if (len == 0)
{
man_reset_client_socket (man, false);
}
else if (len > 0)
{
bool processed_command = false;
ASSERT (len <= (int) sizeof (buf));
command_line_add (man->connection.in, buf, len);
/*
* Reset output object
*/
buffer_list_reset (man->connection.out);
/*
* process command line if complete
*/
{
const unsigned char *line;
while ((line = command_line_get (man->connection.in)))
{
#ifdef MANAGEMENT_DEF_AUTH
if (man->connection.in_extra)
{
if (!strcmp ((char *)line, "END"))
{
in_extra_dispatch (man);
in_extra_reset (&man->connection, false);
}
else
{
buffer_list_push (man->connection.in_extra, line);
}
}
else
#endif
man_process_command (man, (char *) line);
if (man->connection.halt)
break;
command_line_next (man->connection.in);
processed_command = true;
}
}
/*
* Reset output state to MS_CC_WAIT_(READ|WRITE)
*/
if (man->connection.halt)
{
man_reset_client_socket (man, false);
len = 0;
}
else
{
if (processed_command)
man_prompt (man);
man_update_io_state (man);
}
}
else /* len < 0 */
{
if (man_io_error (man, "recv"))
man_reset_client_socket (man, false);
}
return len;
}
static int
man_write (struct management *man)
{
const int size_hint = 1024;
int sent = 0;
const struct buffer *buf;
buffer_list_aggregate(man->connection.out, size_hint);
buf = buffer_list_peek (man->connection.out);
if (buf && BLEN (buf))
{
const int len = min_int (size_hint, BLEN (buf));
sent = send (man->connection.sd_cli, BPTR (buf), len, MSG_NOSIGNAL);
if (sent >= 0)
{
buffer_list_advance (man->connection.out, sent);
}
else if (sent < 0)
{
if (man_io_error (man, "send"))
man_reset_client_socket (man, false);
}
}
/*
* Reset output state to MS_CC_WAIT_(READ|WRITE)
*/
man_update_io_state (man);
return sent;
}
static void
man_connection_clear (struct man_connection *mc)
{
CLEAR (*mc);
/* set initial state */
mc->state = MS_INITIAL;
/* clear socket descriptors */
mc->sd_top = SOCKET_UNDEFINED;
mc->sd_cli = SOCKET_UNDEFINED;
}
static void
man_persist_init (struct management *man,
const int log_history_cache,
const int echo_buffer_size,
const int state_buffer_size)
{
struct man_persist *mp = &man->persist;
if (!mp->defined)
{
CLEAR (*mp);
/* initialize log history store */
mp->log = log_history_init (log_history_cache);
/*
* Initialize virtual output object, so that functions
* which write to a virtual_output object can be redirected
* here to the management object.
*/
mp->vout.func = virtual_output_callback_func;
mp->vout.arg = man;
mp->vout.flags_default = M_CLIENT;
msg_set_virtual_output (&mp->vout);
/*
* Initialize --echo list
*/
man->persist.echo = log_history_init (echo_buffer_size);
/*
* Initialize --state list
*/
man->persist.state = log_history_init (state_buffer_size);
mp->defined = true;
}
}
static void
man_persist_close (struct man_persist *mp)
{
if (mp->log)
{
msg_set_virtual_output (NULL);
log_history_close (mp->log);
}
if (mp->echo)
log_history_close (mp->echo);
if (mp->state)
log_history_close (mp->state);
CLEAR (*mp);
}
static void
man_settings_init (struct man_settings *ms,
const char *addr,
const int port,
const char *pass_file,
const char *client_user,
const char *client_group,
const int log_history_cache,
const int echo_buffer_size,
const int state_buffer_size,
const char *write_peer_info_file,
const int remap_sigusr1,
const unsigned int flags)
{
if (!ms->defined)
{
CLEAR (*ms);
ms->flags = flags;
ms->client_uid = -1;
ms->client_gid = -1;
/*
* Get username/password
*/
if (pass_file)
get_user_pass (&ms->up, pass_file, "Management", GET_USER_PASS_PASSWORD_ONLY);
/*
* lookup client UID/GID if specified
*/
if (client_user)
{
struct user_state s;
get_user (client_user, &s);
ms->client_uid = user_state_uid (&s);
msg (D_MANAGEMENT, "MANAGEMENT: client_uid=%d", ms->client_uid);
ASSERT (ms->client_uid >= 0);
}
if (client_group)
{
struct group_state s;
get_group (client_group, &s);
ms->client_gid = group_state_gid (&s);
msg (D_MANAGEMENT, "MANAGEMENT: client_gid=%d", ms->client_gid);
ASSERT (ms->client_gid >= 0);
}
ms->write_peer_info_file = string_alloc (write_peer_info_file, NULL);
#if UNIX_SOCK_SUPPORT
if (ms->flags & MF_UNIX_SOCK)
sockaddr_unix_init (&ms->local_unix, addr);
else
#endif
{
/*
* Initialize socket address
*/
ms->local.sa.sin_family = AF_INET;
ms->local.sa.sin_addr.s_addr = 0;
ms->local.sa.sin_port = htons (port);
/*
* Run management over tunnel, or
* separate channel?
*/
if (streq (addr, "tunnel") && !(flags & MF_CONNECT_AS_CLIENT))
{
ms->management_over_tunnel = true;
}
else
{
ms->local.sa.sin_addr.s_addr = getaddr
(GETADDR_RESOLVE|GETADDR_WARN_ON_SIGNAL|GETADDR_FATAL, addr, 0, NULL, NULL);
}
}
/*
* Log history and echo buffer may need to be resized
*/
ms->log_history_cache = log_history_cache;
ms->echo_buffer_size = echo_buffer_size;
ms->state_buffer_size = state_buffer_size;
/*
* Set remap sigusr1 flags
*/
if (remap_sigusr1 == SIGHUP)
ms->mansig |= MANSIG_MAP_USR1_TO_HUP;
else if (remap_sigusr1 == SIGTERM)
ms->mansig |= MANSIG_MAP_USR1_TO_TERM;
ms->defined = true;
}
}
static void
man_settings_close (struct man_settings *ms)
{
free (ms->write_peer_info_file);
CLEAR (*ms);
}
static void
man_connection_init (struct management *man)
{
if (man->connection.state == MS_INITIAL)
{
#ifdef WIN32
/*
* This object is a sort of TCP/IP helper
* for Windows.
*/
net_event_win32_init (&man->connection.ne32);
#endif
/*
* Allocate helper objects for command line input and
* command output from/to the socket.
*/
man->connection.in = command_line_new (1024);
man->connection.out = buffer_list_new (0);
/*
* Initialize event set for standalone usage, when we are
* running outside of the primary event loop.
*/
{
int maxevents = 1;
man->connection.es = event_set_init (&maxevents, EVENT_METHOD_FAST);
}
/*
* Listen/connect socket
*/
if (man->settings.flags & MF_CONNECT_AS_CLIENT)
man_connect (man);
else
man_listen (man);
}
}
static void
man_connection_close (struct management *man)
{
struct man_connection *mc = &man->connection;
if (mc->es)
event_free (mc->es);
#ifdef WIN32
net_event_win32_close (&mc->ne32);
#endif
if (socket_defined (mc->sd_top))
{
man_close_socket (man, mc->sd_top);
man_delete_unix_socket (man);
}
if (socket_defined (mc->sd_cli))
man_close_socket (man, mc->sd_cli);
if (mc->in)
command_line_free (mc->in);
if (mc->out)
buffer_list_free (mc->out);
#ifdef MANAGEMENT_DEF_AUTH
in_extra_reset (&man->connection, false);
#endif
man_connection_clear (mc);
}
struct management *
management_init (void)
{
struct management *man;
ALLOC_OBJ_CLEAR (man, struct management);
man_persist_init (man,
MANAGEMENT_LOG_HISTORY_INITIAL_SIZE,
MANAGEMENT_ECHO_BUFFER_SIZE,
MANAGEMENT_STATE_BUFFER_SIZE);
man_connection_clear (&man->connection);
return man;
}
bool
management_open (struct management *man,
const char *addr,
const int port,
const char *pass_file,
const char *client_user,
const char *client_group,
const int log_history_cache,
const int echo_buffer_size,
const int state_buffer_size,
const char *write_peer_info_file,
const int remap_sigusr1,
const unsigned int flags)
{
bool ret = false;
/*
* Save the settings only if they have not
* been saved before.
*/
man_settings_init (&man->settings,
addr,
port,
pass_file,
client_user,
client_group,
log_history_cache,
echo_buffer_size,
state_buffer_size,
write_peer_info_file,
remap_sigusr1,
flags);
/*
* The log is initially sized to MANAGEMENT_LOG_HISTORY_INITIAL_SIZE,
* but may be changed here. Ditto for echo and state buffers.
*/
log_history_resize (man->persist.log, man->settings.log_history_cache);
log_history_resize (man->persist.echo, man->settings.echo_buffer_size);
log_history_resize (man->persist.state, man->settings.state_buffer_size);
/*
* If connection object is uninitialized and we are not doing
* over-the-tunnel management, then open (listening) connection.
*/
if (man->connection.state == MS_INITIAL)
{
if (!man->settings.management_over_tunnel)
{
man_connection_init (man);
ret = true;
}
}
return ret;
}
void
management_close (struct management *man)
{
man_connection_close (man);
man_settings_close (&man->settings);
man_persist_close (&man->persist);
free (man);
}
void
management_set_callback (struct management *man,
const struct management_callback *cb)
{
man->persist.standalone_disabled = true;
man->persist.callback = *cb;
}
void
management_clear_callback (struct management *man)
{
man->persist.standalone_disabled = false;
man->persist.hold_release = false;
CLEAR (man->persist.callback);
man_output_list_push_finalize (man); /* flush output queue */
}
void
management_set_state (struct management *man,
const int state,
const char *detail,
const in_addr_t tun_local_ip,
const in_addr_t tun_remote_ip)
{
if (man->persist.state && (!(man->settings.flags & MF_SERVER) || state < OPENVPN_STATE_CLIENT_BASE))
{
struct gc_arena gc = gc_new ();
struct log_entry e;
const char *out = NULL;
update_time ();
CLEAR (e);
e.timestamp = now;
e.u.state = state;
e.string = detail;
e.local_ip = tun_local_ip;
e.remote_ip = tun_remote_ip;
log_history_add (man->persist.state, &e);
if (man->connection.state_realtime)
out = log_entry_print (&e, LOG_PRINT_STATE_PREFIX
| LOG_PRINT_INT_DATE
| LOG_PRINT_STATE
| LOG_PRINT_LOCAL_IP
| LOG_PRINT_REMOTE_IP
| LOG_PRINT_CRLF
| LOG_ECHO_TO_LOG, &gc);
if (out)
man_output_list_push (man, out);
gc_free (&gc);
}
}
#ifdef MANAGEMENT_DEF_AUTH
static bool
env_filter_match (const char *env_str, const int env_filter_level)
{
static const char *env_names[] = {
"username=",
"password=",
"X509_0_CN=",
"tls_serial_0=",
"untrusted_ip=",
"ifconfig_local=",
"ifconfig_netmask=",
"daemon_start_time=",
"daemon_pid=",
"dev=",
"ifconfig_pool_remote_ip=",
"ifconfig_pool_netmask=",
"time_duration=",
"bytes_sent=",
"bytes_received="
};
if (env_filter_level >= 1)
{
size_t i;
for (i = 0; i < SIZE(env_names); ++i)
{
const char *en = env_names[i];
const size_t len = strlen(en);
if (strncmp(env_str, en, len) == 0)
return true;
}
return false;
}
else
return true;
}
static void
man_output_env (const struct env_set *es, const bool tail, const int env_filter_level)
{
if (es)
{
struct env_item *e;
for (e = es->list; e != NULL; e = e->next)
{
if (e->string && (!env_filter_level || env_filter_match(e->string, env_filter_level)))
msg (M_CLIENT, ">CLIENT:ENV,%s", e->string);
}
}
if (tail)
msg (M_CLIENT, ">CLIENT:ENV,END");
}
static void
man_output_extra_env (struct management *man)
{
struct gc_arena gc = gc_new ();
struct env_set *es = env_set_create (&gc);
if (man->persist.callback.n_clients)
{
const int nclients = (*man->persist.callback.n_clients) (man->persist.callback.arg);
setenv_int (es, "n_clients", nclients);
}
man_output_env (es, false, man->connection.env_filter_level);
gc_free (&gc);
}
static bool
validate_peer_info_line(const char *line)
{
uint8_t c;
int state = 0;
while ((c=*line++))
{
switch (state)
{
case 0:
case 1:
if (c == '=' && state == 1)
state = 2;
else if (isalnum(c) || c == '_')
state = 1;
else
return false;
case 2:
if (isprint(c))
;
else
return false;
}
}
return (state == 2);
}
static void
man_output_peer_info_env (struct management *man, struct man_def_auth_context *mdac)
{
char line[256];
if (man->persist.callback.get_peer_info)
{
const char *peer_info = (*man->persist.callback.get_peer_info) (man->persist.callback.arg, mdac->cid);
if (peer_info)
{
struct buffer buf;
buf_set_read (&buf, (const uint8_t *) peer_info, strlen(peer_info));
while (buf_parse (&buf, '\n', line, sizeof (line)))
{
chomp (line);
if (validate_peer_info_line(line))
{
msg (M_CLIENT, ">CLIENT:ENV,%s", line);
}
else
msg (D_MANAGEMENT, "validation failed on peer_info line received from client");
}
}
}
}
void
management_notify_client_needing_auth (struct management *management,
const unsigned int mda_key_id,
struct man_def_auth_context *mdac,
const struct env_set *es)
{
if (!(mdac->flags & DAF_CONNECTION_CLOSED))
{
const char *mode = "CONNECT";
if (mdac->flags & DAF_CONNECTION_ESTABLISHED)
mode = "REAUTH";
msg (M_CLIENT, ">CLIENT:%s,%lu,%u", mode, mdac->cid, mda_key_id);
man_output_extra_env (management);
man_output_peer_info_env(management, mdac);
man_output_env (es, true, management->connection.env_filter_level);
mdac->flags |= DAF_INITIAL_AUTH;
}
}
void
management_connection_established (struct management *management,
struct man_def_auth_context *mdac,
const struct env_set *es)
{
mdac->flags |= DAF_CONNECTION_ESTABLISHED;
msg (M_CLIENT, ">CLIENT:ESTABLISHED,%lu", mdac->cid);
man_output_extra_env (management);
man_output_env (es, true, management->connection.env_filter_level);
}
void
management_notify_client_close (struct management *management,
struct man_def_auth_context *mdac,
const struct env_set *es)
{
if ((mdac->flags & DAF_INITIAL_AUTH) && !(mdac->flags & DAF_CONNECTION_CLOSED))
{
msg (M_CLIENT, ">CLIENT:DISCONNECT,%lu", mdac->cid);
man_output_env (es, true, management->connection.env_filter_level);
mdac->flags |= DAF_CONNECTION_CLOSED;
}
}
void
management_learn_addr (struct management *management,
struct man_def_auth_context *mdac,
const struct mroute_addr *addr,
const bool primary)
{
struct gc_arena gc = gc_new ();
if ((mdac->flags & DAF_INITIAL_AUTH) && !(mdac->flags & DAF_CONNECTION_CLOSED))
{
msg (M_CLIENT, ">CLIENT:ADDRESS,%lu,%s,%d",
mdac->cid,
mroute_addr_print_ex (addr, MAPF_SUBNET, &gc),
BOOL_CAST (primary));
}
gc_free (&gc);
}
#endif
void
management_echo (struct management *man, const char *string, const bool pull)
{
if (man->persist.echo)
{
struct gc_arena gc = gc_new ();
struct log_entry e;
const char *out = NULL;
update_time ();
CLEAR (e);
e.timestamp = now;
e.string = string;
e.u.intval = BOOL_CAST (pull);
log_history_add (man->persist.echo, &e);
if (man->connection.echo_realtime)
out = log_entry_print (&e, LOG_PRINT_INT_DATE|LOG_PRINT_ECHO_PREFIX|LOG_PRINT_CRLF|MANAGEMENT_ECHO_FLAGS, &gc);
if (out)
man_output_list_push (man, out);
gc_free (&gc);
}
}
void
management_post_tunnel_open (struct management *man, const in_addr_t tun_local_ip)
{
/*
* If we are running management over the tunnel,
* this is the place to initialize the connection.
*/
if (man->settings.management_over_tunnel
&& man->connection.state == MS_INITIAL)
{
/* listen on our local TUN/TAP IP address */
man->settings.local.sa.sin_addr.s_addr = htonl (tun_local_ip);
man_connection_init (man);
}
}
void
management_pre_tunnel_close (struct management *man)
{
if (man->settings.management_over_tunnel)
man_connection_close (man);
}
void
management_auth_failure (struct management *man, const char *type, const char *reason)
{
if (reason)
msg (M_CLIENT, ">PASSWORD:Verification Failed: '%s' ['%s']", type, reason);
else
msg (M_CLIENT, ">PASSWORD:Verification Failed: '%s'", type);
}
static inline bool
man_persist_state (unsigned int *persistent, const int n)
{
if (persistent)
{
if (*persistent == (unsigned int)n)
return false;
*persistent = n;
}
return true;
}
#ifdef WIN32
void
management_socket_set (struct management *man,
struct event_set *es,
void *arg,
unsigned int *persistent)
{
if (man->connection.state != MS_INITIAL)
{
event_t ev = net_event_win32_get_event (&man->connection.ne32);
net_event_win32_reset_write (&man->connection.ne32);
switch (man->connection.state)
{
case MS_LISTEN:
if (man_persist_state (persistent, 1))
event_ctl (es, ev, EVENT_READ, arg);
break;
case MS_CC_WAIT_READ:
if (man_persist_state (persistent, 2))
event_ctl (es, ev, EVENT_READ, arg);
break;
case MS_CC_WAIT_WRITE:
if (man_persist_state (persistent, 3))
event_ctl (es, ev, EVENT_READ|EVENT_WRITE, arg);
break;
default:
ASSERT (0);
}
}
}
void
management_io (struct management *man)
{
if (man->connection.state != MS_INITIAL)
{
long net_events;
net_event_win32_reset (&man->connection.ne32);
net_events = net_event_win32_get_event_mask (&man->connection.ne32);
if (net_events & FD_CLOSE)
{
man_reset_client_socket (man, false);
}
else
{
if (man->connection.state == MS_LISTEN)
{
if (net_events & FD_ACCEPT)
{
man_accept (man);
net_event_win32_clear_selected_events (&man->connection.ne32, FD_ACCEPT);
}
}
else if (man->connection.state == MS_CC_WAIT_READ || man->connection.state == MS_CC_WAIT_WRITE)
{
if (net_events & FD_READ)
{
while (man_read (man) > 0)
;
net_event_win32_clear_selected_events (&man->connection.ne32, FD_READ);
}
if (net_events & FD_WRITE)
{
int status;
status = man_write (man);
if (status < 0 && WSAGetLastError() == WSAEWOULDBLOCK)
{
net_event_win32_clear_selected_events (&man->connection.ne32, FD_WRITE);
}
}
}
}
}
}
#else
void
management_socket_set (struct management *man,
struct event_set *es,
void *arg,
unsigned int *persistent)
{
switch (man->connection.state)
{
case MS_LISTEN:
if (man_persist_state (persistent, 1))
event_ctl (es, man->connection.sd_top, EVENT_READ, arg);
break;
case MS_CC_WAIT_READ:
if (man_persist_state (persistent, 2))
event_ctl (es, man->connection.sd_cli, EVENT_READ, arg);
break;
case MS_CC_WAIT_WRITE:
if (man_persist_state (persistent, 3))
event_ctl (es, man->connection.sd_cli, EVENT_WRITE, arg);
break;
case MS_INITIAL:
break;
default:
ASSERT (0);
}
}
void
management_io (struct management *man)
{
switch (man->connection.state)
{
case MS_LISTEN:
man_accept (man);
break;
case MS_CC_WAIT_READ:
man_read (man);
break;
case MS_CC_WAIT_WRITE:
man_write (man);
break;
case MS_INITIAL:
break;
default:
ASSERT (0);
}
}
#endif
static inline bool
man_standalone_ok (const struct management *man)
{
return !man->settings.management_over_tunnel && man->connection.state != MS_INITIAL;
}
static bool
man_check_for_signals (volatile int *signal_received)
{
if (signal_received)
{
get_signal (signal_received);
if (*signal_received)
return true;
}
return false;
}
/*
* Wait for socket I/O when outside primary event loop
*/
static int
man_block (struct management *man, volatile int *signal_received, const time_t expire)
{
struct timeval tv;
struct event_set_return esr;
int status = -1;
if (man_standalone_ok (man))
{
while (true)
{
event_reset (man->connection.es);
management_socket_set (man, man->connection.es, NULL, NULL);
tv.tv_usec = 0;
tv.tv_sec = 1;
if (man_check_for_signals (signal_received))
{
status = -1;
break;
}
status = event_wait (man->connection.es, &tv, &esr, 1);
update_time ();
if (man_check_for_signals (signal_received))
{
status = -1;
break;
}
if (status > 0)
break;
else if (expire && now >= expire)
{
/* set SIGINT signal if expiration time exceeded */
status = 0;
if (signal_received)
*signal_received = SIGINT;
break;
}
}
}
return status;
}
/*
* Perform management socket output outside primary event loop
*/
static void
man_output_standalone (struct management *man, volatile int *signal_received)
{
if (man_standalone_ok (man))
{
while (man->connection.state == MS_CC_WAIT_WRITE)
{
management_io (man);
if (man->connection.state == MS_CC_WAIT_WRITE)
man_block (man, signal_received, 0);
if (signal_received && *signal_received)
break;
}
}
}
/*
* Process management event loop outside primary event loop
*/
static int
man_standalone_event_loop (struct management *man, volatile int *signal_received, const time_t expire)
{
int status = -1;
if (man_standalone_ok (man))
{
status = man_block (man, signal_received, expire);
if (status > 0)
management_io (man);
}
return status;
}
#define MWCC_PASSWORD_WAIT (1<<0)
#define MWCC_HOLD_WAIT (1<<1)
/*
* Block until client connects
*/
static void
man_wait_for_client_connection (struct management *man,
volatile int *signal_received,
const time_t expire,
unsigned int flags)
{
ASSERT (man_standalone_ok (man));
if (man->connection.state == MS_LISTEN)
{
if (flags & MWCC_PASSWORD_WAIT)
msg (D_MANAGEMENT, "Need password(s) from management interface, waiting...");
if (flags & MWCC_HOLD_WAIT)
msg (D_MANAGEMENT, "Need hold release from management interface, waiting...");
do {
man_standalone_event_loop (man, signal_received, expire);
if (signal_received && *signal_received)
break;
} while (man->connection.state == MS_LISTEN || man_password_needed (man));
}
}
/*
* Process the management event loop for sec seconds
*/
void
management_event_loop_n_seconds (struct management *man, int sec)
{
if (man_standalone_ok (man))
{
volatile int signal_received = 0;
const bool standalone_disabled_save = man->persist.standalone_disabled;
time_t expire = 0;
man->persist.standalone_disabled = false; /* This is so M_CLIENT messages will be correctly passed through msg() */
/* set expire time */
update_time ();
if (sec)
expire = now + sec;
/* if no client connection, wait for one */
man_wait_for_client_connection (man, &signal_received, expire, 0);
if (signal_received)
return;
/* run command processing event loop */
do
{
man_standalone_event_loop (man, &signal_received, expire);
if (!signal_received)
man_check_for_signals (&signal_received);
if (signal_received)
return;
} while (expire);
/* revert state */
man->persist.standalone_disabled = standalone_disabled_save;
}
else
{
sleep (sec);
}
}
/*
* Get a username/password from management channel in standalone mode.
*/
bool
management_query_user_pass (struct management *man,
struct user_pass *up,
const char *type,
const unsigned int flags)
{
struct gc_arena gc = gc_new ();
bool ret = false;
if (man_standalone_ok (man))
{
volatile int signal_received = 0;
const bool standalone_disabled_save = man->persist.standalone_disabled;
struct buffer alert_msg = alloc_buf_gc (128, &gc);
const char *alert_type = NULL;
const char *prefix = NULL;
unsigned int up_query_mode = 0;
ret = true;
man->persist.standalone_disabled = false; /* This is so M_CLIENT messages will be correctly passed through msg() */
man->persist.special_state_msg = NULL;
CLEAR (man->connection.up_query);
if (flags & GET_USER_PASS_NEED_OK)
{
up_query_mode = UP_QUERY_NEED_OK;
prefix= "NEED-OK";
alert_type = "confirmation";
}
else if (flags & GET_USER_PASS_NEED_STR)
{
up_query_mode = UP_QUERY_NEED_STR;
prefix= "NEED-STR";
alert_type = "string";
}
else if (flags & GET_USER_PASS_PASSWORD_ONLY)
{
up_query_mode = UP_QUERY_PASS;
prefix = "PASSWORD";
alert_type = "password";
}
else
{
up_query_mode = UP_QUERY_USER_PASS;
prefix = "PASSWORD";
alert_type = "username/password";
}
buf_printf (&alert_msg, ">%s:Need '%s' %s",
prefix,
type,
alert_type);
if (flags & (GET_USER_PASS_NEED_OK | GET_USER_PASS_NEED_STR))
buf_printf (&alert_msg, " MSG:%s", up->username);
man_wait_for_client_connection (man, &signal_received, 0, MWCC_PASSWORD_WAIT);
if (signal_received)
ret = false;
if (ret)
{
man->persist.special_state_msg = BSTR (&alert_msg);
msg (M_CLIENT, "%s", man->persist.special_state_msg);
/* tell command line parser which info we need */
man->connection.up_query_mode = up_query_mode;
man->connection.up_query_type = type;
/* run command processing event loop until we get our username/password */
do
{
man_standalone_event_loop (man, &signal_received, 0);
if (!signal_received)
man_check_for_signals (&signal_received);
if (signal_received)
{
ret = false;
break;
}
} while (!man->connection.up_query.defined);
}
/* revert state */
man->connection.up_query_mode = UP_QUERY_DISABLED;
man->connection.up_query_type = NULL;
man->persist.standalone_disabled = standalone_disabled_save;
man->persist.special_state_msg = NULL;
/* pass through blank passwords */
if (!strcmp (man->connection.up_query.password, blank_up))
CLEAR (man->connection.up_query.password);
/*
* Transfer u/p to return object, zero any record
* we hold in the management object.
*/
if (ret)
{
man->connection.up_query.nocache = up->nocache; /* preserve caller's nocache setting */
*up = man->connection.up_query;
}
CLEAR (man->connection.up_query);
}
gc_free (&gc);
return ret;
}
/*
* Return true if management_hold() would block
*/
bool
management_would_hold (struct management *man)
{
return (man->settings.flags & MF_HOLD) && !man->persist.hold_release && man_standalone_ok (man);
}
/*
* Return true if (from the management interface's perspective) OpenVPN should
* daemonize.
*/
bool
management_should_daemonize (struct management *man)
{
return management_would_hold (man) || (man->settings.flags & MF_QUERY_PASSWORDS);
}
/*
* If the hold flag is enabled, hibernate until a management client releases the hold.
* Return true if the caller should not sleep for an additional time interval.
*/
bool
management_hold (struct management *man)
{
if (management_would_hold (man))
{
volatile int signal_received = 0;
const bool standalone_disabled_save = man->persist.standalone_disabled;
man->persist.standalone_disabled = false; /* This is so M_CLIENT messages will be correctly passed through msg() */
man->persist.special_state_msg = NULL;
man->settings.mansig |= MANSIG_IGNORE_USR1_HUP;
man_wait_for_client_connection (man, &signal_received, 0, MWCC_HOLD_WAIT);
if (!signal_received)
{
man->persist.special_state_msg = ">HOLD:Waiting for hold release";
msg (M_CLIENT, "%s", man->persist.special_state_msg);
/* run command processing event loop until we get our username/password */
do
{
man_standalone_event_loop (man, &signal_received, 0);
if (!signal_received)
man_check_for_signals (&signal_received);
if (signal_received)
break;
} while (!man->persist.hold_release);
}
/* revert state */
man->persist.standalone_disabled = standalone_disabled_save;
man->persist.special_state_msg = NULL;
man->settings.mansig &= ~MANSIG_IGNORE_USR1_HUP;
return true;
}
return false;
}
/*
* struct command_line
*/
struct command_line *
command_line_new (const int buf_len)
{
struct command_line *cl;
ALLOC_OBJ_CLEAR (cl, struct command_line);
cl->buf = alloc_buf (buf_len);
cl->residual = alloc_buf (buf_len);
return cl;
}
void
command_line_reset (struct command_line *cl)
{
buf_clear (&cl->buf);
buf_clear (&cl->residual);
}
void
command_line_free (struct command_line *cl)
{
command_line_reset (cl);
free_buf (&cl->buf);
free_buf (&cl->residual);
free (cl);
}
void
command_line_add (struct command_line *cl, const unsigned char *buf, const int len)
{
int i;
for (i = 0; i < len; ++i)
{
if (buf[i] && (isprint(buf[i]) || buf[i] == '\n'))
{
if (!buf_write_u8 (&cl->buf, buf[i]))
buf_clear (&cl->buf);
}
}
}
const unsigned char *
command_line_get (struct command_line *cl)
{
int i;
const unsigned char *ret = NULL;
i = buf_substring_len (&cl->buf, '\n');
if (i >= 0)
{
buf_copy_excess (&cl->residual, &cl->buf, i);
buf_chomp (&cl->buf);
ret = (const unsigned char *) BSTR (&cl->buf);
}
return ret;
}
void
command_line_next (struct command_line *cl)
{
buf_clear (&cl->buf);
buf_copy (&cl->buf, &cl->residual);
buf_clear (&cl->residual);
}
/*
* struct log_entry
*/
const char *
log_entry_print (const struct log_entry *e, unsigned int flags, struct gc_arena *gc)
{
struct buffer out = alloc_buf_gc (ERR_BUF_SIZE, gc);
if (flags & LOG_FATAL_NOTIFY)
buf_printf (&out, ">FATAL:");
if (flags & LOG_PRINT_LOG_PREFIX)
buf_printf (&out, ">LOG:");
if (flags & LOG_PRINT_ECHO_PREFIX)
buf_printf (&out, ">ECHO:");
if (flags & LOG_PRINT_STATE_PREFIX)
buf_printf (&out, ">STATE:");
if (flags & LOG_PRINT_INT_DATE)
buf_printf (&out, "%u,", (unsigned int)e->timestamp);
if (flags & LOG_PRINT_MSG_FLAGS)
buf_printf (&out, "%s,", msg_flags_string (e->u.msg_flags, gc));
if (flags & LOG_PRINT_STATE)
buf_printf (&out, "%s,", man_state_name (e->u.state));
if (flags & LOG_PRINT_INTVAL)
buf_printf (&out, "%d,", e->u.intval);
if (e->string)
buf_printf (&out, "%s", e->string);
if (flags & LOG_PRINT_LOCAL_IP)
buf_printf (&out, ",%s", print_in_addr_t (e->local_ip, IA_EMPTY_IF_UNDEF, gc));
if (flags & LOG_PRINT_REMOTE_IP)
buf_printf (&out, ",%s", print_in_addr_t (e->remote_ip, IA_EMPTY_IF_UNDEF, gc));
if (flags & LOG_ECHO_TO_LOG)
msg (D_MANAGEMENT, "MANAGEMENT: %s", BSTR (&out));
if (flags & LOG_PRINT_CRLF)
buf_printf (&out, "\r\n");
return BSTR (&out);
}
static void
log_entry_free_contents (struct log_entry *e)
{
if (e->string)
free ((char *)e->string);
CLEAR (*e);
}
/*
* struct log_history
*/
static inline int
log_index (const struct log_history *h, int i)
{
return modulo_add (h->base, i, h->capacity);
}
static void
log_history_obj_init (struct log_history *h, int capacity)
{
CLEAR (*h);
h->capacity = capacity;
ALLOC_ARRAY_CLEAR (h->array, struct log_entry, capacity);
}
struct log_history *
log_history_init (const int capacity)
{
struct log_history *h;
ASSERT (capacity > 0);
ALLOC_OBJ (h, struct log_history);
log_history_obj_init (h, capacity);
return h;
}
static void
log_history_free_contents (struct log_history *h)
{
int i;
for (i = 0; i < h->size; ++i)
log_entry_free_contents (&h->array[log_index(h, i)]);
free (h->array);
}
void
log_history_close (struct log_history *h)
{
log_history_free_contents (h);
free (h);
}
void
log_history_add (struct log_history *h, const struct log_entry *le)
{
struct log_entry *e;
ASSERT (h->size >= 0 && h->size <= h->capacity);
if (h->size == h->capacity)
{
e = &h->array[h->base];
log_entry_free_contents (e);
h->base = log_index (h, 1);
}
else
{
e = &h->array[log_index(h, h->size)];
++h->size;
}
*e = *le;
e->string = string_alloc (le->string, NULL);
}
void
log_history_resize (struct log_history *h, const int capacity)
{
if (capacity != h->capacity)
{
struct log_history newlog;
int i;
ASSERT (capacity > 0);
log_history_obj_init (&newlog, capacity);
for (i = 0; i < h->size; ++i)
log_history_add (&newlog, &h->array[log_index(h, i)]);
log_history_free_contents (h);
*h = newlog;
}
}
const struct log_entry *
log_history_ref (const struct log_history *h, const int index)
{
if (index >= 0 && index < h->size)
return &h->array[log_index(h, (h->size - 1) - index)];
else
return NULL;
}
#if HTTP_PROXY_FALLBACK
void
management_http_proxy_fallback_notify (struct management *man, const char *type, const char *remote_ip_hint)
{
if (remote_ip_hint)
msg (M_CLIENT, ">PROXY:%s,%s", type, remote_ip_hint);
else
msg (M_CLIENT, ">PROXY:%s", type);
}
#endif /* HTTP_PROXY_FALLBACK */
#else
static void dummy(void) {}
#endif /* ENABLE_MANAGEMENT */