26#include "dbus-string.h"
28#include "dbus-internals.h"
29#include "dbus-keyring.h"
31#include "dbus-protocol.h"
32#include "dbus-credentials.h"
120 DBUS_AUTH_COMMAND_AUTH,
121 DBUS_AUTH_COMMAND_CANCEL,
122 DBUS_AUTH_COMMAND_DATA,
123 DBUS_AUTH_COMMAND_BEGIN,
124 DBUS_AUTH_COMMAND_REJECTED,
125 DBUS_AUTH_COMMAND_OK,
126 DBUS_AUTH_COMMAND_ERROR,
127 DBUS_AUTH_COMMAND_UNKNOWN,
128 DBUS_AUTH_COMMAND_NEGOTIATE_UNIX_FD,
129 DBUS_AUTH_COMMAND_AGREE_UNIX_FD
223static void goto_state (
DBusAuth *auth,
231 const char *message);
253 "WaitingForAuth", handle_server_state_waiting_for_auth
256 "WaitingForData", handle_server_state_waiting_for_data
259 "WaitingForBegin", handle_server_state_waiting_for_begin
283 "WaitingForData", handle_client_state_waiting_for_data
289 "WaitingForOK", handle_client_state_waiting_for_ok
292 "WaitingForReject", handle_client_state_waiting_for_reject
295 "WaitingForAgreeUnixFD", handle_client_state_waiting_for_agree_unix_fd
303 "Authenticated",
NULL
307 "NeedDisconnect",
NULL
310static const char auth_side_client[] =
"client";
311static const char auth_side_server[] =
"server";
316#define DBUS_AUTH_IS_SERVER(auth) ((auth)->side == auth_side_server)
321#define DBUS_AUTH_IS_CLIENT(auth) ((auth)->side == auth_side_client)
326#define DBUS_AUTH_CLIENT(auth) ((DBusAuthClient*)(auth))
331#define DBUS_AUTH_SERVER(auth) ((DBusAuthServer*)(auth))
338#define DBUS_AUTH_NAME(auth) ((auth)->side)
341_dbus_auth_new (
int size)
432 _dbus_verbose (
"%s: Shutting down mechanism %s\n",
474 if (_dbus_string_get_length (&cookie) == 0)
484 &to_hash, _dbus_string_get_length (&to_hash)))
491 &to_hash, _dbus_string_get_length (&to_hash)))
498 &to_hash, _dbus_string_get_length (&to_hash)))
519#define N_CHALLENGE_BYTES (128/8)
522sha1_handle_first_client_response (
DBusAuth *auth,
535 if (_dbus_string_get_length (data) > 0)
537 if (_dbus_string_get_length (&auth->
identity) > 0)
540 _dbus_verbose (
"%s: client tried to send auth identity, but we already have one\n",
542 return send_rejected (auth);
554 _dbus_verbose (
"%s: Did not get a valid username from client\n",
556 return send_rejected (auth);
596 _DBUS_ASSERT_ERROR_IS_SET (&error);
597 _dbus_verbose (
"%s: Error loading keyring: %s\n",
599 if (send_rejected (auth))
616 _DBUS_ASSERT_ERROR_IS_SET (&error);
617 _dbus_verbose (
"%s: Could not get a cookie ID to send to client: %s\n",
619 if (send_rejected (auth))
630 &tmp2, _dbus_string_get_length (&tmp2)))
651 _DBUS_ASSERT_ERROR_IS_SET (&error);
652 _dbus_verbose (
"%s: Error generating challenge: %s\n",
654 if (send_rejected (auth))
667 _dbus_string_get_length (&tmp2)))
670 if (!send_data (auth, &tmp2))
673 goto_state (auth, &server_state_waiting_for_data);
686sha1_handle_second_client_response (
DBusAuth *auth,
704 _dbus_verbose (
"%s: no space separator in client response\n",
706 return send_rejected (auth);
722 _dbus_string_get_length (data) - i,
727 if (_dbus_string_get_length (&client_challenge) == 0 ||
728 _dbus_string_get_length (&client_hash) == 0)
730 _dbus_verbose (
"%s: zero-length client challenge or hash\n",
732 if (send_rejected (auth))
740 if (!sha1_compute_hash (auth, auth->
cookie_id,
747 if (_dbus_string_get_length (&correct_hash) == 0)
749 if (send_rejected (auth))
756 if (send_rejected (auth))
768 DBUS_CREDENTIAL_UNIX_PROCESS_ID,
775 _dbus_verbose (
"%s: authenticated client using DBUS_COOKIE_SHA1\n",
793handle_server_data_cookie_sha1_mech (
DBusAuth *auth,
797 return sha1_handle_first_client_response (auth, data);
799 return sha1_handle_second_client_response (auth, data);
803handle_server_shutdown_cookie_sha1_mech (
DBusAuth *auth)
810handle_client_initial_response_cookie_sha1_mech (
DBusAuth *auth,
826 _dbus_string_get_length (response)))
838handle_client_data_cookie_sha1_mech (
DBusAuth *auth,
858 if (send_error (auth,
859 "Server did not send context/ID/challenge properly"))
874 if (send_error (auth,
875 "Server did not send context/ID/challenge properly"))
892 j = _dbus_string_get_length (data);
895 &server_challenge, 0))
900 if (send_error (auth,
"Server sent invalid cookie context"))
907 if (send_error (auth,
"Could not parse cookie ID as an integer"))
912 if (_dbus_string_get_length (&server_challenge) == 0)
914 if (send_error (auth,
"Empty server challenge string"))
935 _DBUS_ASSERT_ERROR_IS_SET (&error);
937 _dbus_verbose (
"%s: Error loading keyring: %s\n",
940 if (send_error (auth,
"Could not load cookie file"))
967 _DBUS_ASSERT_ERROR_IS_SET (&error);
969 _dbus_verbose (
"%s: Failed to generate challenge: %s\n",
972 if (send_error (auth,
"Failed to generate challenge"))
989 if (!sha1_compute_hash (auth, val,
995 if (_dbus_string_get_length (&correct_hash) == 0)
998 if (send_error (auth,
"Don't have the requested cookie ID"))
1006 _dbus_string_get_length (&tmp)))
1013 _dbus_string_get_length (&tmp)))
1016 if (!send_data (auth, &tmp))
1040handle_client_shutdown_cookie_sha1_mech (
DBusAuth *auth)
1051handle_server_data_external_mech (
DBusAuth *auth,
1056 _dbus_verbose (
"%s: no credentials, mechanism EXTERNAL can't authenticate\n",
1058 return send_rejected (auth);
1061 if (_dbus_string_get_length (data) > 0)
1063 if (_dbus_string_get_length (&auth->
identity) > 0)
1066 _dbus_verbose (
"%s: client tried to send auth identity, but we already have one\n",
1068 return send_rejected (auth);
1079 if (_dbus_string_get_length (&auth->
identity) == 0 &&
1082 if (send_data (auth,
NULL))
1084 _dbus_verbose (
"%s: sending empty challenge asking client for auth identity\n",
1087 goto_state (auth, &server_state_waiting_for_data);
1101 if (_dbus_string_get_length (&auth->
identity) == 0)
1114 _dbus_verbose (
"%s: could not get credentials from uid string\n",
1116 return send_rejected (auth);
1122 _dbus_verbose (
"%s: desired user %s is no good\n",
1124 _dbus_string_get_const_data (&auth->
identity));
1125 return send_rejected (auth);
1139 DBUS_CREDENTIAL_UNIX_PROCESS_ID,
1144 DBUS_CREDENTIAL_ADT_AUDIT_DATA_ID,
1149 DBUS_CREDENTIAL_LINUX_SECURITY_LABEL,
1153 if (!send_ok (auth))
1156 _dbus_verbose (
"%s: authenticated client based on socket credentials\n",
1163 _dbus_verbose (
"%s: desired identity not found in socket credentials\n",
1165 return send_rejected (auth);
1170handle_server_shutdown_external_mech (
DBusAuth *auth)
1176handle_client_initial_response_external_mech (
DBusAuth *auth,
1194 _dbus_string_get_length (response)))
1207handle_client_data_external_mech (
DBusAuth *auth,
1215handle_client_shutdown_external_mech (
DBusAuth *auth)
1225handle_server_data_anonymous_mech (
DBusAuth *auth,
1228 if (_dbus_string_get_length (data) > 0)
1237 _dbus_verbose (
"%s: Received invalid UTF-8 trace data from ANONYMOUS client\n",
1239 return send_rejected (auth);
1242 _dbus_verbose (
"%s: ANONYMOUS client sent trace string: '%s'\n",
1244 _dbus_string_get_const_data (data));
1253 DBUS_CREDENTIAL_UNIX_PROCESS_ID,
1258 if (!send_ok (auth))
1261 _dbus_verbose (
"%s: authenticated client as anonymous\n",
1268handle_server_shutdown_anonymous_mech (
DBusAuth *auth)
1274handle_client_initial_response_anonymous_mech (
DBusAuth *auth,
1294 _dbus_string_get_length (response)))
1307handle_client_data_anonymous_mech (
DBusAuth *auth,
1315handle_client_shutdown_anonymous_mech (
DBusAuth *auth)
1334 handle_server_data_external_mech,
1336 handle_server_shutdown_external_mech,
1337 handle_client_initial_response_external_mech,
1338 handle_client_data_external_mech,
1340 handle_client_shutdown_external_mech },
1341 {
"DBUS_COOKIE_SHA1",
1342 handle_server_data_cookie_sha1_mech,
1344 handle_server_shutdown_cookie_sha1_mech,
1345 handle_client_initial_response_cookie_sha1_mech,
1346 handle_client_data_cookie_sha1_mech,
1348 handle_client_shutdown_cookie_sha1_mech },
1350 handle_server_data_anonymous_mech,
1352 handle_server_shutdown_anonymous_mech,
1353 handle_client_initial_response_anonymous_mech,
1354 handle_client_data_anonymous_mech,
1356 handle_client_shutdown_anonymous_mech },
1362 char **allowed_mechs)
1366 if (allowed_mechs !=
NULL &&
1368 _dbus_string_get_const_data (name)))
1372 while (all_mechanisms[i].mechanism !=
NULL)
1375 all_mechanisms[i].mechanism))
1377 return &all_mechanisms[i];
1431 _dbus_string_get_length (&auth->
outgoing)))
1438 shutdown_mech (auth);
1440 goto_state (auth, &client_state_waiting_for_data);
1450 if (data ==
NULL || _dbus_string_get_length (data) == 0)
1454 old_len = _dbus_string_get_length (&auth->
outgoing);
1459 _dbus_string_get_length (&auth->
outgoing)))
1493 all_mechanisms[i].mechanism))
1501 all_mechanisms[i].mechanism))
1509 _dbus_string_get_length (&auth->
outgoing)))
1512 shutdown_mech (auth);
1519 goto_state (auth, &common_state_need_disconnect);
1521 goto_state (auth, &server_state_waiting_for_auth);
1533send_error (
DBusAuth *auth,
const char *message)
1536 "ERROR \"%s\"\r\n", message);
1544 orig_len = _dbus_string_get_length (&auth->
outgoing);
1550 _dbus_string_get_length (&auth->
outgoing)) &&
1553 goto_state (auth, &server_state_waiting_for_begin);
1571 goto_state (auth, &common_state_authenticated);
1594 if (end_of_hex != _dbus_string_get_length (args_from_ok) ||
1597 _dbus_verbose (
"Bad GUID from server, parsed %d bytes and had %d bytes from server\n",
1598 end_of_hex, _dbus_string_get_length (args_from_ok));
1599 goto_state (auth, &common_state_need_disconnect);
1608 _dbus_verbose (
"Got GUID '%s' from the server\n",
1609 _dbus_string_get_const_data (&
DBUS_AUTH_CLIENT (auth)->guid_from_server));
1612 return send_negotiate_unix_fd(auth);
1614 _dbus_verbose(
"Not negotiating unix fd passing, since not possible\n");
1615 return send_begin (auth);
1623 goto_state (auth, &client_state_waiting_for_reject);
1647 if (_dbus_string_get_length (args) != end)
1650 if (!send_error (auth,
"Invalid hex encoding"))
1656#ifdef DBUS_ENABLE_VERBOSE_MODE
1658 _dbus_string_get_length (&decoded)))
1659 _dbus_verbose (
"%s: data: '%s'\n",
1661 _dbus_string_get_const_data (&decoded));
1664 if (!(* data_func) (auth, &decoded))
1675send_negotiate_unix_fd (
DBusAuth *auth)
1678 "NEGOTIATE_UNIX_FD\r\n"))
1681 goto_state (auth, &client_state_waiting_for_agree_unix_fd);
1691 _dbus_verbose(
"Agreed to UNIX FD passing\n");
1694 "AGREE_UNIX_FD\r\n"))
1697 goto_state (auth, &server_state_waiting_for_begin);
1704 if (_dbus_string_get_length (args) == 0)
1707 if (!send_rejected (auth))
1739 _dbus_verbose (
"%s: Trying mechanism %s\n",
1743 if (!process_data (auth, &hex_response,
1750 _dbus_verbose (
"%s: Unsupported mechanism %s\n",
1752 _dbus_string_get_const_data (&mech));
1754 if (!send_rejected (auth))
1772handle_server_state_waiting_for_auth (
DBusAuth *auth,
1778 case DBUS_AUTH_COMMAND_AUTH:
1779 return handle_auth (auth, args);
1781 case DBUS_AUTH_COMMAND_CANCEL:
1782 case DBUS_AUTH_COMMAND_DATA:
1783 return send_error (auth,
"Not currently in an auth conversation");
1785 case DBUS_AUTH_COMMAND_BEGIN:
1786 goto_state (auth, &common_state_need_disconnect);
1789 case DBUS_AUTH_COMMAND_ERROR:
1790 return send_rejected (auth);
1792 case DBUS_AUTH_COMMAND_NEGOTIATE_UNIX_FD:
1793 return send_error (auth,
"Need to authenticate first");
1795 case DBUS_AUTH_COMMAND_REJECTED:
1796 case DBUS_AUTH_COMMAND_OK:
1797 case DBUS_AUTH_COMMAND_UNKNOWN:
1798 case DBUS_AUTH_COMMAND_AGREE_UNIX_FD:
1800 return send_error (auth,
"Unknown command");
1805handle_server_state_waiting_for_data (
DBusAuth *auth,
1811 case DBUS_AUTH_COMMAND_AUTH:
1812 return send_error (auth,
"Sent AUTH while another AUTH in progress");
1814 case DBUS_AUTH_COMMAND_CANCEL:
1815 case DBUS_AUTH_COMMAND_ERROR:
1816 return send_rejected (auth);
1818 case DBUS_AUTH_COMMAND_DATA:
1821 case DBUS_AUTH_COMMAND_BEGIN:
1822 goto_state (auth, &common_state_need_disconnect);
1825 case DBUS_AUTH_COMMAND_NEGOTIATE_UNIX_FD:
1826 return send_error (auth,
"Need to authenticate first");
1828 case DBUS_AUTH_COMMAND_REJECTED:
1829 case DBUS_AUTH_COMMAND_OK:
1830 case DBUS_AUTH_COMMAND_UNKNOWN:
1831 case DBUS_AUTH_COMMAND_AGREE_UNIX_FD:
1833 return send_error (auth,
"Unknown command");
1838handle_server_state_waiting_for_begin (
DBusAuth *auth,
1844 case DBUS_AUTH_COMMAND_AUTH:
1845 return send_error (auth,
"Sent AUTH while expecting BEGIN");
1847 case DBUS_AUTH_COMMAND_DATA:
1848 return send_error (auth,
"Sent DATA while expecting BEGIN");
1850 case DBUS_AUTH_COMMAND_BEGIN:
1851 goto_state (auth, &common_state_authenticated);
1854 case DBUS_AUTH_COMMAND_NEGOTIATE_UNIX_FD:
1856 return send_agree_unix_fd(auth);
1858 return send_error(auth,
"Unix FD passing not supported, not authenticated or otherwise not possible");
1860 case DBUS_AUTH_COMMAND_REJECTED:
1861 case DBUS_AUTH_COMMAND_OK:
1862 case DBUS_AUTH_COMMAND_UNKNOWN:
1863 case DBUS_AUTH_COMMAND_AGREE_UNIX_FD:
1865 return send_error (auth,
"Unknown command");
1867 case DBUS_AUTH_COMMAND_CANCEL:
1868 case DBUS_AUTH_COMMAND_ERROR:
1869 return send_rejected (auth);
1905 len = _dbus_string_get_length (args);
1916 if (!get_word (args, &next, &m))
1935 if (mech != &all_mechanisms[0])
1937 _dbus_verbose (
"%s: Adding mechanism %s to list we will try\n",
1949 _dbus_verbose (
"%s: Already tried mechanism %s; not adding to list we will try\n",
1955 _dbus_verbose (
"%s: Server offered mechanism \"%s\" that we don't know how to use\n",
1957 _dbus_string_get_const_data (&m));
1983 if (!record_mechanisms (auth, args))
1991 if (!send_auth (auth, mech))
1996 _dbus_verbose (
"%s: Trying mechanism %s\n",
2003 _dbus_verbose (
"%s: Disconnecting because we are out of mechanisms to try using\n",
2005 goto_state (auth, &common_state_need_disconnect);
2013handle_client_state_waiting_for_data (
DBusAuth *auth,
2021 case DBUS_AUTH_COMMAND_DATA:
2024 case DBUS_AUTH_COMMAND_REJECTED:
2025 return process_rejected (auth, args);
2027 case DBUS_AUTH_COMMAND_OK:
2028 return process_ok(auth, args);
2030 case DBUS_AUTH_COMMAND_ERROR:
2031 return send_cancel (auth);
2033 case DBUS_AUTH_COMMAND_AUTH:
2034 case DBUS_AUTH_COMMAND_CANCEL:
2035 case DBUS_AUTH_COMMAND_BEGIN:
2036 case DBUS_AUTH_COMMAND_UNKNOWN:
2037 case DBUS_AUTH_COMMAND_NEGOTIATE_UNIX_FD:
2038 case DBUS_AUTH_COMMAND_AGREE_UNIX_FD:
2040 return send_error (auth,
"Unknown command");
2045handle_client_state_waiting_for_ok (
DBusAuth *auth,
2051 case DBUS_AUTH_COMMAND_REJECTED:
2052 return process_rejected (auth, args);
2054 case DBUS_AUTH_COMMAND_OK:
2055 return process_ok(auth, args);
2057 case DBUS_AUTH_COMMAND_DATA:
2058 case DBUS_AUTH_COMMAND_ERROR:
2059 return send_cancel (auth);
2061 case DBUS_AUTH_COMMAND_AUTH:
2062 case DBUS_AUTH_COMMAND_CANCEL:
2063 case DBUS_AUTH_COMMAND_BEGIN:
2064 case DBUS_AUTH_COMMAND_UNKNOWN:
2065 case DBUS_AUTH_COMMAND_NEGOTIATE_UNIX_FD:
2066 case DBUS_AUTH_COMMAND_AGREE_UNIX_FD:
2068 return send_error (auth,
"Unknown command");
2073handle_client_state_waiting_for_reject (
DBusAuth *auth,
2079 case DBUS_AUTH_COMMAND_REJECTED:
2080 return process_rejected (auth, args);
2082 case DBUS_AUTH_COMMAND_AUTH:
2083 case DBUS_AUTH_COMMAND_CANCEL:
2084 case DBUS_AUTH_COMMAND_DATA:
2085 case DBUS_AUTH_COMMAND_BEGIN:
2086 case DBUS_AUTH_COMMAND_OK:
2087 case DBUS_AUTH_COMMAND_ERROR:
2088 case DBUS_AUTH_COMMAND_UNKNOWN:
2089 case DBUS_AUTH_COMMAND_NEGOTIATE_UNIX_FD:
2090 case DBUS_AUTH_COMMAND_AGREE_UNIX_FD:
2092 goto_state (auth, &common_state_need_disconnect);
2098handle_client_state_waiting_for_agree_unix_fd(
DBusAuth *auth,
2104 case DBUS_AUTH_COMMAND_AGREE_UNIX_FD:
2107 _dbus_verbose(
"Successfully negotiated UNIX FD passing\n");
2108 return send_begin (auth);
2110 case DBUS_AUTH_COMMAND_ERROR:
2113 _dbus_verbose(
"Failed to negotiate UNIX FD passing\n");
2114 return send_begin (auth);
2116 case DBUS_AUTH_COMMAND_OK:
2117 case DBUS_AUTH_COMMAND_DATA:
2118 case DBUS_AUTH_COMMAND_REJECTED:
2119 case DBUS_AUTH_COMMAND_AUTH:
2120 case DBUS_AUTH_COMMAND_CANCEL:
2121 case DBUS_AUTH_COMMAND_BEGIN:
2122 case DBUS_AUTH_COMMAND_UNKNOWN:
2123 case DBUS_AUTH_COMMAND_NEGOTIATE_UNIX_FD:
2125 return send_error (auth,
"Unknown command");
2138 {
"AUTH", DBUS_AUTH_COMMAND_AUTH },
2139 {
"CANCEL", DBUS_AUTH_COMMAND_CANCEL },
2140 {
"DATA", DBUS_AUTH_COMMAND_DATA },
2141 {
"BEGIN", DBUS_AUTH_COMMAND_BEGIN },
2142 {
"REJECTED", DBUS_AUTH_COMMAND_REJECTED },
2143 {
"OK", DBUS_AUTH_COMMAND_OK },
2144 {
"ERROR", DBUS_AUTH_COMMAND_ERROR },
2145 {
"NEGOTIATE_UNIX_FD", DBUS_AUTH_COMMAND_NEGOTIATE_UNIX_FD },
2146 {
"AGREE_UNIX_FD", DBUS_AUTH_COMMAND_AGREE_UNIX_FD }
2150lookup_command_from_name (
DBusString *command)
2157 auth_command_names[i].name))
2158 return auth_command_names[i].command;
2161 return DBUS_AUTH_COMMAND_UNKNOWN;
2168 _dbus_verbose (
"%s: going from state %s to state %s\n",
2173 auth->
state = state;
2212 _dbus_string_get_length (&line)))
2214 _dbus_verbose (
"%s: Command contained non-ASCII chars or embedded nul\n",
2216 if (!send_error (auth,
"Command contained non-ASCII"))
2222 _dbus_verbose (
"%s: got command \"%s\"\n",
2224 _dbus_string_get_const_data (&line));
2239 command = lookup_command_from_name (&line);
2306 auth->
side = auth_side_server;
2307 auth->
state = &server_state_waiting_for_auth;
2311 server_auth->
guid = guid_copy;
2347 auth->
side = auth_side_client;
2348 auth->
state = &client_state_need_send_auth;
2352 if (!send_auth (auth, &all_mechanisms[0]))
2391 shutdown_mech (auth);
2434 const char **mechanisms)
2438 if (mechanisms !=
NULL)
2458#define DBUS_AUTH_IN_END_STATE(auth) ((auth)->state->handler == NULL)
2473#define MAX_BUFFER (16 * _DBUS_ONE_KILOBYTE)
2480 if (_dbus_string_get_length (&auth->
incoming) > MAX_BUFFER ||
2481 _dbus_string_get_length (&auth->
outgoing) > MAX_BUFFER)
2483 goto_state (auth, &common_state_need_disconnect);
2484 _dbus_verbose (
"%s: Disconnecting due to excessive data buffered in auth phase\n",
2489 while (process_command (auth));
2492 return DBUS_AUTH_STATE_WAITING_FOR_MEMORY;
2493 else if (_dbus_string_get_length (&auth->
outgoing) > 0)
2494 return DBUS_AUTH_STATE_HAVE_BYTES_TO_SEND;
2495 else if (auth->
state == &common_state_need_disconnect)
2496 return DBUS_AUTH_STATE_NEED_DISCONNECT;
2497 else if (auth->
state == &common_state_authenticated)
2498 return DBUS_AUTH_STATE_AUTHENTICATED;
2499 else return DBUS_AUTH_STATE_WAITING_FOR_INPUT;
2520 if (_dbus_string_get_length (&auth->
outgoing) == 0)
2540 _dbus_verbose (
"%s: Sent %d bytes of: %s\n",
2543 _dbus_string_get_const_data (&auth->
outgoing));
2630 if (auth->
state != &common_state_authenticated)
2661 if (auth->
state != &common_state_authenticated)
2674 _dbus_string_get_length (encoded));
2689 if (auth->
state != &common_state_authenticated)
2724 if (auth->
state != &common_state_authenticated)
2737 _dbus_string_get_length (plaintext));
2770 if (auth->
state == &common_state_authenticated)
2796 if (auth->
state == &common_state_authenticated)
2797 return _dbus_string_get_const_data (&
DBUS_AUTH_CLIENT (auth)->guid_from_server);
2815 &auth->
context, 0, _dbus_string_get_length (context));
2854 return find_mech (name,
NULL) !=
NULL;
dbus_bool_t(* DBusAuthEncodeFunction)(DBusAuth *auth, const DBusString *data, DBusString *encoded)
This function encodes a block of data from the peer.
dbus_bool_t(* DBusAuthDecodeFunction)(DBusAuth *auth, const DBusString *data, DBusString *decoded)
This function decodes a block of data from the peer.
#define DBUS_AUTH_SERVER(auth)
#define DBUS_AUTH_IS_SERVER(auth)
#define DBUS_AUTH_NAME(auth)
The name of the auth ("client" or "server")
#define DBUS_AUTH_CLIENT(auth)
#define DBUS_AUTH_IS_CLIENT(auth)
dbus_bool_t(* DBusAuthStateFunction)(DBusAuth *auth, DBusAuthCommand command, const DBusString *args)
Auth state function, determines the reaction to incoming events for a particular state.
void(* DBusAuthShutdownFunction)(DBusAuth *auth)
This function is called when the mechanism is abandoned.
dbus_bool_t(* DBusInitialResponseFunction)(DBusAuth *auth, DBusString *response)
This function appends an initial client response to the given string.
DBusAuthCommand
Enumeration for the known authentication commands.
dbus_bool_t(* DBusAuthDataFunction)(DBusAuth *auth, const DBusString *data)
This function processes a block of data received from the peer.
#define N_CHALLENGE_BYTES
http://www.ietf.org/rfc/rfc2831.txt suggests at least 64 bits of entropy, we use 128.
DBusAuthState _dbus_auth_do_work(DBusAuth *auth)
Analyzes buffered input and moves the auth conversation forward, returning the new state of the auth ...
dbus_bool_t _dbus_auth_encode_data(DBusAuth *auth, const DBusString *plaintext, DBusString *encoded)
Called post-authentication, encodes a block of bytes for sending to the peer.
dbus_bool_t _dbus_auth_dump_supported_mechanisms(DBusString *buffer)
Return a human-readable string containing all supported auth mechanisms.
dbus_bool_t _dbus_auth_needs_encoding(DBusAuth *auth)
Called post-authentication, indicates whether we need to encode the message stream with _dbus_auth_en...
dbus_bool_t _dbus_auth_set_credentials(DBusAuth *auth, DBusCredentials *credentials)
Sets credentials received via reliable means from the operating system.
dbus_bool_t _dbus_auth_get_unix_fd_negotiated(DBusAuth *auth)
Queries whether unix fd passing was successfully negotiated.
DBusAuth * _dbus_auth_ref(DBusAuth *auth)
Increments the refcount of an auth object.
dbus_bool_t _dbus_auth_is_supported_mechanism(DBusString *name)
Queries whether the given auth mechanism is supported.
DBusCredentials * _dbus_auth_get_identity(DBusAuth *auth)
Gets the identity we authorized the client as.
dbus_bool_t _dbus_auth_get_bytes_to_send(DBusAuth *auth, const DBusString **str)
Gets bytes that need to be sent to the peer we're conversing with.
dbus_bool_t _dbus_auth_decode_data(DBusAuth *auth, const DBusString *encoded, DBusString *plaintext)
Called post-authentication, decodes a block of bytes received from the peer.
void _dbus_auth_unref(DBusAuth *auth)
Decrements the refcount of an auth object.
void _dbus_auth_set_unix_fd_possible(DBusAuth *auth, dbus_bool_t b)
Sets whether unix fd passing is potentially on the transport and hence shall be negotiated.
void _dbus_auth_return_buffer(DBusAuth *auth, DBusString *buffer)
Returns a buffer with new data read into it.
dbus_bool_t _dbus_auth_set_mechanisms(DBusAuth *auth, const char **mechanisms)
Sets an array of authentication mechanism names that we are willing to use.
void _dbus_auth_delete_unused_bytes(DBusAuth *auth)
Gets rid of unused bytes returned by _dbus_auth_get_unused_bytes() after we've gotten them and succes...
const char * _dbus_auth_get_guid_from_server(DBusAuth *auth)
Gets the GUID from the server if we've authenticated; gets NULL otherwise.
void _dbus_auth_get_buffer(DBusAuth *auth, DBusString **buffer)
Get a buffer to be used for reading bytes from the peer we're conversing with.
dbus_bool_t _dbus_auth_needs_decoding(DBusAuth *auth)
Called post-authentication, indicates whether we need to decode the message stream with _dbus_auth_de...
dbus_bool_t _dbus_auth_set_context(DBusAuth *auth, const DBusString *context)
Sets the "authentication context" which scopes cookies with the DBUS_COOKIE_SHA1 auth mechanism for e...
void _dbus_auth_bytes_sent(DBusAuth *auth, int bytes_sent)
Notifies the auth conversation object that the given number of bytes of the outgoing buffer have been...
#define DBUS_AUTH_IN_END_STATE(auth)
DBusAuth * _dbus_auth_client_new(void)
Creates a new auth conversation object for the client side.
DBusAuth * _dbus_auth_server_new(const DBusString *guid)
Creates a new auth conversation object for the server side.
void _dbus_auth_get_unused_bytes(DBusAuth *auth, const DBusString **str)
Returns leftover bytes that were not used as part of the auth conversation.
dbus_bool_t _dbus_credentials_are_superset(DBusCredentials *credentials, DBusCredentials *possible_subset)
Checks whether the first credentials object contains all the credentials found in the second credenti...
void _dbus_credentials_clear(DBusCredentials *credentials)
Clear all credentials in the object.
DBusCredentials * _dbus_credentials_new(void)
Creates a new credentials object.
dbus_bool_t _dbus_credentials_add_credentials(DBusCredentials *credentials, DBusCredentials *other_credentials)
Merge all credentials found in the second object into the first object, overwriting the first object ...
void _dbus_credentials_unref(DBusCredentials *credentials)
Decrement refcount on credentials.
dbus_bool_t _dbus_credentials_are_empty(DBusCredentials *credentials)
Checks whether a credentials object contains anything.
dbus_bool_t _dbus_credentials_add_credential(DBusCredentials *credentials, DBusCredentialType which, DBusCredentials *other_credentials)
Merge the given credential found in the second object into the first object, overwriting the first ob...
dbus_bool_t _dbus_credentials_are_anonymous(DBusCredentials *credentials)
Checks whether a credentials object contains a user identity.
#define DBUS_ERROR_INIT
Expands to a suitable initializer for a DBusError on the stack.
dbus_bool_t dbus_error_has_name(const DBusError *error, const char *name)
Checks whether the error is set and has the given name.
void dbus_error_free(DBusError *error)
Frees an error that's been set (or just initialized), then reinitializes the error as in dbus_error_i...
dbus_bool_t dbus_error_is_set(const DBusError *error)
Checks whether an error occurred (the error is set).
#define _dbus_assert(condition)
Aborts with an error message if the condition is false.
dbus_bool_t _dbus_string_array_contains(const char **array, const char *str)
Checks whether a string array contains the given string.
#define _DBUS_N_ELEMENTS(array)
Computes the number of elements in a fixed-size array using sizeof().
char ** _dbus_dup_string_array(const char **array)
Duplicates a string array.
int _dbus_keyring_get_best_key(DBusKeyring *keyring, DBusError *error)
Gets a recent key to use for authentication.
dbus_bool_t _dbus_keyring_validate_context(const DBusString *context)
Checks whether the context is a valid context.
dbus_bool_t _dbus_keyring_is_for_credentials(DBusKeyring *keyring, DBusCredentials *credentials)
Checks whether the keyring is for the same user as the given credentials.
DBusKeyring * _dbus_keyring_new_for_credentials(DBusCredentials *credentials, const DBusString *context, DBusError *error)
Creates a new keyring that lives in the ~/.dbus-keyrings directory of the user represented by credent...
dbus_bool_t _dbus_keyring_get_hex_key(DBusKeyring *keyring, int key_id, DBusString *hex_key)
Gets the hex-encoded secret key for the given ID.
void _dbus_keyring_unref(DBusKeyring *keyring)
Decrements refcount and finalizes if it reaches zero.
void * _dbus_list_pop_first(DBusList **list)
Removes the first value in the list and returns it.
void _dbus_list_clear(DBusList **list)
Frees all links in the list and sets the list head to NULL.
dbus_bool_t _dbus_list_append(DBusList **list, void *data)
Appends a value to the list.
#define NULL
A null pointer, defined appropriately for C or C++.
#define TRUE
Expands to "1".
#define FALSE
Expands to "0".
void dbus_free(void *memory)
Frees a block of memory previously allocated by dbus_malloc() or dbus_malloc0().
void * dbus_malloc0(size_t bytes)
Allocates the given number of bytes, as with standard malloc(), but all bytes are initialized to zero...
void dbus_free_string_array(char **str_array)
Frees a NULL-terminated array of strings.
#define DBUS_VERSION_STRING
The COMPILE TIME version of libdbus, as a string "X.Y.Z".
#define DBUS_ERROR_NO_MEMORY
There was not enough memory to complete an operation.
dbus_bool_t _dbus_sha_compute(const DBusString *data, DBusString *ascii_output)
Computes the ASCII hex-encoded shasum of the given data and appends it to the output string.
dbus_bool_t _dbus_string_set_length(DBusString *str, int length)
Sets the length of a string.
dbus_bool_t _dbus_string_hex_decode(const DBusString *source, int start, int *end_return, DBusString *dest, int insert_at)
Decodes a string from hex encoding.
dbus_bool_t _dbus_string_append(DBusString *str, const char *buffer)
Appends a nul-terminated C-style string to a DBusString.
dbus_bool_t _dbus_string_init(DBusString *str)
Initializes a string.
dbus_bool_t _dbus_string_copy(const DBusString *source, int start, DBusString *dest, int insert_at)
Like _dbus_string_move(), but does not delete the section of the source string that's copied to the d...
DBUS_PRIVATE_EXPORT dbus_bool_t _dbus_string_append_int(DBusString *str, long value)
Appends an integer to a DBusString.
void _dbus_string_skip_blank(const DBusString *str, int start, int *end)
Skips blanks from start, storing the first non-blank in *end (blank is space or tab).
dbus_bool_t _dbus_string_find(const DBusString *str, int start, const char *substr, int *found)
Finds the given substring in the string, returning TRUE and filling in the byte index where the subst...
dbus_bool_t _dbus_string_validate_utf8(const DBusString *str, int start, int len)
Checks that the given range of the string is valid UTF-8.
dbus_bool_t _dbus_string_find_blank(const DBusString *str, int start, int *found)
Finds a blank (space or tab) in the string.
void _dbus_string_free(DBusString *str)
Frees a string created by _dbus_string_init().
void _dbus_string_delete(DBusString *str, int start, int len)
Deletes a segment of a DBusString with length len starting at start.
dbus_bool_t _dbus_string_equal_c_str(const DBusString *a, const char *c_str)
Checks whether a string is equal to a C string.
void _dbus_string_zero(DBusString *str)
Clears all allocated bytes in the string to zero.
DBUS_PRIVATE_EXPORT dbus_bool_t _dbus_string_parse_int(const DBusString *str, int start, long *value_return, int *end_return)
Parses an integer contained in a DBusString.
dbus_bool_t _dbus_string_validate_ascii(const DBusString *str, int start, int len)
Checks that the given range of the string is valid ASCII with no nul bytes.
dbus_bool_t _dbus_string_hex_encode(const DBusString *source, int start, DBusString *dest, int insert_at)
Encodes a string in hex, the way MD5 and SHA-1 are usually encoded.
dbus_bool_t _dbus_string_append_printf(DBusString *str, const char *format,...)
Appends a printf-style formatted string to the DBusString.
dbus_bool_t _dbus_string_move(DBusString *source, int start, DBusString *dest, int insert_at)
Moves the end of one string into another string.
dbus_bool_t _dbus_string_equal(const DBusString *a, const DBusString *b)
Tests two DBusString for equality.
dbus_bool_t _dbus_string_copy_len(const DBusString *source, int start, int len, DBusString *dest, int insert_at)
Like _dbus_string_copy(), but can copy a segment from the middle of the source string.
dbus_bool_t _dbus_string_replace_len(const DBusString *source, int start, int len, DBusString *dest, int replace_at, int replace_len)
Replaces a segment of dest string with a segment of source string.
dbus_bool_t _dbus_generate_random_bytes(DBusString *str, int n_bytes, DBusError *error)
Generates the given number of securely random bytes, using the best mechanism we can come up with.
dbus_bool_t _dbus_credentials_add_from_user(DBusCredentials *credentials, const DBusString *username)
Adds the credentials corresponding to the given username.
dbus_bool_t _dbus_append_user_from_current_process(DBusString *str)
Append to the string the identity we would like to have when we authenticate, on UNIX this is the cur...
dbus_uint32_t dbus_bool_t
A boolean, valid values are TRUE and FALSE.
"Subclass" of DBusAuth for client side
DBusList * mechs_to_try
Mechanisms we got from the server that we're going to try using.
DBusAuth base
Parent class.
DBusString guid_from_server
GUID received from server.
Mapping from command name to enum.
DBusAuthCommand command
Corresponding enum.
const char * name
Name of the command.
Virtual table representing a particular auth mechanism.
const char * mechanism
Name of the mechanism.
DBusAuthDataFunction server_data_func
Function on server side for DATA.
DBusAuthDataFunction client_data_func
Function on client side for DATA.
DBusInitialResponseFunction client_initial_response_func
Function on client side to handle initial response.
DBusAuthEncodeFunction server_encode_func
Function on server side to encode.
DBusAuthShutdownFunction server_shutdown_func
Function on server side to shut down.
DBusAuthDecodeFunction client_decode_func
Function on client side for decode.
DBusAuthDecodeFunction server_decode_func
Function on server side to decode.
DBusAuthShutdownFunction client_shutdown_func
Function on client side for shutdown.
DBusAuthEncodeFunction client_encode_func
Function on client side for encode.
"Subclass" of DBusAuth for server side.
int max_failures
Number of times we reject before disconnect.
DBusString guid
Our globally unique ID in hex encoding.
DBusAuth base
Parent class.
int failures
Number of times client has been rejected.
Information about a auth state.
DBusAuthStateFunction handler
State function for this state.
const char * name
Name of the state.
Internal members of DBusAuth.
unsigned int already_got_mechanisms
Client already got mech list.
const DBusAuthMechanismHandler * mech
Current auth mechanism.
char ** allowed_mechs
Mechanisms we're allowed to use, or NULL if we can use any.
unsigned int needed_memory
We needed memory to continue since last successful getting something done.
int cookie_id
ID of cookie to use.
const DBusAuthStateData * state
Current protocol state.
DBusString challenge
Challenge sent to client.
DBusCredentials * desired_identity
Identity client has requested.
unsigned int unix_fd_possible
This side could do unix fd passing.
const char * side
Client or server.
DBusString identity
Current identity we're authorizing as.
DBusString incoming
Incoming data buffer.
int refcount
reference count
unsigned int already_asked_for_initial_response
Already sent a blank challenge to get an initial response.
DBusKeyring * keyring
Keyring for cookie mechanism.
DBusString outgoing
Outgoing data buffer.
DBusCredentials * credentials
Credentials read from socket.
DBusString context
Cookie scope.
unsigned int unix_fd_negotiated
Unix fd was successfully negotiated.
unsigned int buffer_outstanding
Buffer is "checked out" for reading data into.
DBusCredentials * authorized_identity
Credentials that are authorized.
Object representing an exception.
const char * message
public error message field
Internals of DBusKeyring.
void * data
Data stored at this element.