-/* -*- mode: C; c-file-style: "gnu" -*- */
+/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
/* dbus-auth.c Authentication
*
* Copyright (C) 2002, 2003, 2004 Red Hat Inc.
+ * Copyright (C) 2013 Samsung Electronics
*
- * Licensed under the Academic Free License version 2.0
+ * Licensed under the Academic Free License version 2.1
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
+
+#include <config.h>
#include "dbus-auth.h"
#include "dbus-string.h"
#include "dbus-list.h"
#include "dbus-internals.h"
#include "dbus-keyring.h"
#include "dbus-sha.h"
-#include "dbus-userdb.h"
#include "dbus-protocol.h"
+#include "dbus-credentials.h"
/**
* @defgroup DBusAuth Authentication
* challenge/response, but we don't currently allow that in our
* protocol.
*
- * @todo DBusAuth really needs to be rewritten as an explicit state
- * machine. Right now it's too hard to prove to yourself by inspection
- * that it works.
- *
* @todo right now sometimes both ends will block waiting for input
* from the other end, e.g. if there's an error during
* DBUS_COOKIE_SHA1.
DBUS_AUTH_COMMAND_REJECTED,
DBUS_AUTH_COMMAND_OK,
DBUS_AUTH_COMMAND_ERROR,
- DBUS_AUTH_COMMAND_UNKNOWN
+ DBUS_AUTH_COMMAND_UNKNOWN,
+ DBUS_AUTH_COMMAND_NEGOTIATE_UNIX_FD,
+ DBUS_AUTH_COMMAND_AGREE_UNIX_FD
} DBusAuthCommand;
/**
* as.
*/
- DBusCredentials credentials; /**< Credentials read from socket,
- * fields may be -1
- */
+ DBusCredentials *credentials; /**< Credentials read from socket
+ */
- DBusCredentials authorized_identity; /**< Credentials that are authorized */
+ DBusCredentials *authorized_identity; /**< Credentials that are authorized */
- DBusCredentials desired_identity; /**< Identity client has requested */
+ DBusCredentials *desired_identity; /**< Identity client has requested */
DBusString context; /**< Cookie scope */
DBusKeyring *keyring; /**< Keyring for cookie mechanism. */
unsigned int already_got_mechanisms : 1; /**< Client already got mech list */
unsigned int already_asked_for_initial_response : 1; /**< Already sent a blank challenge to get an initial response */
unsigned int buffer_outstanding : 1; /**< Buffer is "checked out" for reading data into */
+
+ unsigned int unix_fd_possible : 1; /**< This side could do unix fd passing */
+ unsigned int unix_fd_negotiated : 1; /**< Unix fd was successfully negotiated */
};
/**
DBusAuth base; /**< Parent class */
DBusList *mechs_to_try; /**< Mechanisms we got from the server that we're going to try using */
+
+ DBusString guid_from_server; /**< GUID received from server */
} DBusAuthClient;
int failures; /**< Number of times client has been rejected */
int max_failures; /**< Number of times we reject before disconnect */
+
+ DBusString guid; /**< Our globally unique ID in hex encoding */
} DBusAuthServer;
static dbus_bool_t send_ok (DBusAuth *auth);
static dbus_bool_t send_begin (DBusAuth *auth);
static dbus_bool_t send_cancel (DBusAuth *auth);
+static dbus_bool_t send_negotiate_unix_fd (DBusAuth *auth);
+static dbus_bool_t send_agree_unix_fd (DBusAuth *auth);
/**
* Client states
static dbus_bool_t handle_client_state_waiting_for_reject (DBusAuth *auth,
DBusAuthCommand command,
const DBusString *args);
+static dbus_bool_t handle_client_state_waiting_for_agree_unix_fd (DBusAuth *auth,
+ DBusAuthCommand command,
+ const DBusString *args);
static const DBusAuthStateData client_state_need_send_auth = {
"NeedSendAuth", NULL
static const DBusAuthStateData client_state_waiting_for_reject = {
"WaitingForReject", handle_client_state_waiting_for_reject
};
-
+static const DBusAuthStateData client_state_waiting_for_agree_unix_fd = {
+ "WaitingForAgreeUnixFD", handle_client_state_waiting_for_agree_unix_fd
+};
+
/**
* Common terminal states. Terminal states have handler == NULL.
*/
return NULL;
auth->refcount = 1;
-
- _dbus_credentials_clear (&auth->credentials);
- _dbus_credentials_clear (&auth->authorized_identity);
- _dbus_credentials_clear (&auth->desired_identity);
auth->keyring = NULL;
auth->cookie_id = -1;
/* default context if none is specified */
if (!_dbus_string_append (&auth->context, "org_freedesktop_general"))
goto enomem_5;
+
+ auth->credentials = _dbus_credentials_new ();
+ if (auth->credentials == NULL)
+ goto enomem_6;
+
+ auth->authorized_identity = _dbus_credentials_new ();
+ if (auth->authorized_identity == NULL)
+ goto enomem_7;
+
+ auth->desired_identity = _dbus_credentials_new ();
+ if (auth->desired_identity == NULL)
+ goto enomem_8;
return auth;
+#if 0
+ enomem_9:
+ _dbus_credentials_unref (auth->desired_identity);
+#endif
+ enomem_8:
+ _dbus_credentials_unref (auth->authorized_identity);
+ enomem_7:
+ _dbus_credentials_unref (auth->credentials);
+ enomem_6:
+ /* last alloc was an append to context, which is freed already below */ ;
enomem_5:
_dbus_string_free (&auth->challenge);
enomem_4:
auth->already_asked_for_initial_response = FALSE;
_dbus_string_set_length (&auth->identity, 0);
- _dbus_credentials_clear (&auth->authorized_identity);
- _dbus_credentials_clear (&auth->desired_identity);
+ _dbus_credentials_clear (auth->authorized_identity);
+ _dbus_credentials_clear (auth->desired_identity);
if (auth->mech != NULL)
{
}
}
+/*
+ * DBUS_COOKIE_SHA1 mechanism
+ */
+
/* Returns TRUE but with an empty string hash if the
* cookie_id isn't known. As with all this code
* TRUE just means we had enough memory.
}
}
- if (!_dbus_credentials_from_username (data, &auth->desired_identity))
+ if (!_dbus_credentials_add_from_user (auth->desired_identity, data))
{
_dbus_verbose ("%s: Did not get a valid username from client\n",
DBUS_AUTH_NAME (auth));
* a different DBusAuth for every connection.
*/
if (auth->keyring &&
- !_dbus_keyring_is_for_user (auth->keyring,
- data))
+ !_dbus_keyring_is_for_credentials (auth->keyring,
+ auth->desired_identity))
{
_dbus_keyring_unref (auth->keyring);
auth->keyring = NULL;
if (auth->keyring == NULL)
{
- DBusError error;
-
dbus_error_init (&error);
- auth->keyring = _dbus_keyring_new_homedir (data,
- &auth->context,
- &error);
+ auth->keyring = _dbus_keyring_new_for_credentials (auth->desired_identity,
+ &auth->context,
+ &error);
if (auth->keyring == NULL)
{
retval = TRUE;
goto out_3;
}
-
+
+ if (!_dbus_credentials_add_credentials (auth->authorized_identity,
+ auth->desired_identity))
+ goto out_3;
+
+ /* Copy process ID from the socket credentials if it's there
+ */
+ if (!_dbus_credentials_add_credential (auth->authorized_identity,
+ DBUS_CREDENTIAL_UNIX_PROCESS_ID,
+ auth->credentials))
+ goto out_3;
+
if (!send_ok (auth))
goto out_3;
- _dbus_verbose ("%s: authenticated client with UID "DBUS_UID_FORMAT" using DBUS_COOKIE_SHA1\n",
- DBUS_AUTH_NAME (auth), auth->desired_identity.uid);
+ _dbus_verbose ("%s: authenticated client using DBUS_COOKIE_SHA1\n",
+ DBUS_AUTH_NAME (auth));
- auth->authorized_identity = auth->desired_identity;
retval = TRUE;
out_3:
handle_client_initial_response_cookie_sha1_mech (DBusAuth *auth,
DBusString *response)
{
- const DBusString *username;
+ DBusString username;
dbus_bool_t retval;
retval = FALSE;
- if (!_dbus_username_from_current_process (&username))
+ if (!_dbus_string_init (&username))
+ return FALSE;
+
+ if (!_dbus_append_user_from_current_process (&username))
goto out_0;
- if (!_dbus_string_hex_encode (username, 0,
+ if (!_dbus_string_hex_encode (&username, 0,
response,
_dbus_string_get_length (response)))
goto out_0;
retval = TRUE;
out_0:
+ _dbus_string_free (&username);
+
return retval;
}
DBusError error;
dbus_error_init (&error);
- auth->keyring = _dbus_keyring_new_homedir (NULL,
- &context,
- &error);
+ auth->keyring = _dbus_keyring_new_for_credentials (NULL,
+ &context,
+ &error);
if (auth->keyring == NULL)
{
_dbus_string_set_length (&auth->challenge, 0);
}
+/*
+ * EXTERNAL mechanism
+ */
+
static dbus_bool_t
handle_server_data_external_mech (DBusAuth *auth,
const DBusString *data)
{
- if (auth->credentials.uid == DBUS_UID_UNSET)
+ if (_dbus_credentials_are_anonymous (auth->credentials))
{
_dbus_verbose ("%s: no credentials, mechanism EXTERNAL can't authenticate\n",
DBUS_AUTH_NAME (auth));
_dbus_verbose ("%s: sending empty challenge asking client for auth identity\n",
DBUS_AUTH_NAME (auth));
auth->already_asked_for_initial_response = TRUE;
+ goto_state (auth, &server_state_waiting_for_data);
return TRUE;
}
else
return FALSE;
}
- _dbus_credentials_clear (&auth->desired_identity);
+ _dbus_credentials_clear (auth->desired_identity);
/* If auth->identity is still empty here, then client
* responded with an empty string after we poked it for
*/
if (_dbus_string_get_length (&auth->identity) == 0)
{
- auth->desired_identity.uid = auth->credentials.uid;
+ if (!_dbus_credentials_add_credentials (auth->desired_identity,
+ auth->credentials))
+ {
+ return FALSE; /* OOM */
+ }
}
else
{
- if (!_dbus_uid_from_string (&auth->identity,
- &auth->desired_identity.uid))
+ if (!_dbus_credentials_add_from_user (auth->desired_identity,
+ &auth->identity))
{
_dbus_verbose ("%s: could not get credentials from uid string\n",
DBUS_AUTH_NAME (auth));
}
}
- if (auth->desired_identity.uid == DBUS_UID_UNSET)
+ if (_dbus_credentials_are_anonymous (auth->desired_identity))
{
_dbus_verbose ("%s: desired user %s is no good\n",
DBUS_AUTH_NAME (auth),
return send_rejected (auth);
}
- if (_dbus_credentials_match (&auth->desired_identity,
- &auth->credentials))
+ if (_dbus_credentials_are_superset (auth->credentials,
+ auth->desired_identity))
{
- /* client has authenticated */
- if (!send_ok (auth))
+ /* client has authenticated */
+ if (!_dbus_credentials_add_credentials (auth->authorized_identity,
+ auth->desired_identity))
return FALSE;
- _dbus_verbose ("%s: authenticated client with UID "DBUS_UID_FORMAT
- " matching socket credentials UID "DBUS_UID_FORMAT"\n",
- DBUS_AUTH_NAME (auth),
- auth->desired_identity.uid,
- auth->credentials.uid);
-
- auth->authorized_identity.uid = auth->desired_identity.uid;
+ /* also copy process ID from the socket credentials
+ */
+ if (!_dbus_credentials_add_credential (auth->authorized_identity,
+ DBUS_CREDENTIAL_UNIX_PROCESS_ID,
+ auth->credentials))
+ return FALSE;
+
+ /* also copy audit data from the socket credentials
+ */
+ if (!_dbus_credentials_add_credential (auth->authorized_identity,
+ DBUS_CREDENTIAL_ADT_AUDIT_DATA_ID,
+ auth->credentials))
+ return FALSE;
+ if (!send_ok (auth))
+ return FALSE;
+
+ _dbus_verbose ("%s: authenticated client based on socket credentials\n",
+ DBUS_AUTH_NAME (auth));
+
return TRUE;
}
else
{
- _dbus_verbose ("%s: credentials uid="DBUS_UID_FORMAT
- " gid="DBUS_GID_FORMAT
- " do not allow uid="DBUS_UID_FORMAT
- " gid="DBUS_GID_FORMAT"\n",
- DBUS_AUTH_NAME (auth),
- auth->credentials.uid, auth->credentials.gid,
- auth->desired_identity.uid, auth->desired_identity.gid);
+ _dbus_verbose ("%s: desired identity not found in socket credentials\n",
+ DBUS_AUTH_NAME (auth));
return send_rejected (auth);
}
}
if (!_dbus_string_init (&plaintext))
return FALSE;
-
- if (!_dbus_string_append_uint (&plaintext,
- _dbus_getuid ()))
+
+ if (!_dbus_append_user_from_current_process (&plaintext))
goto failed;
if (!_dbus_string_hex_encode (&plaintext, 0,
}
+/*
+ * ANONYMOUS mechanism
+ */
+
+static dbus_bool_t
+handle_server_data_anonymous_mech (DBusAuth *auth,
+ const DBusString *data)
+{
+ if (_dbus_string_get_length (data) > 0)
+ {
+ /* Client is allowed to send "trace" data, the only defined
+ * meaning is that if it contains '@' it is an email address,
+ * and otherwise it is anything else, and it's supposed to be
+ * UTF-8
+ */
+ if (!_dbus_string_validate_utf8 (data, 0, _dbus_string_get_length (data)))
+ {
+ _dbus_verbose ("%s: Received invalid UTF-8 trace data from ANONYMOUS client\n",
+ DBUS_AUTH_NAME (auth));
+ return send_rejected (auth);
+ }
+
+ _dbus_verbose ("%s: ANONYMOUS client sent trace string: '%s'\n",
+ DBUS_AUTH_NAME (auth),
+ _dbus_string_get_const_data (data));
+ }
+
+ /* We want to be anonymous (clear in case some other protocol got midway through I guess) */
+ _dbus_credentials_clear (auth->desired_identity);
+
+ /* Copy process ID from the socket credentials
+ */
+ if (!_dbus_credentials_add_credential (auth->authorized_identity,
+ DBUS_CREDENTIAL_UNIX_PROCESS_ID,
+ auth->credentials))
+ return FALSE;
+
+ /* Anonymous is always allowed */
+ if (!send_ok (auth))
+ return FALSE;
+
+ _dbus_verbose ("%s: authenticated client as anonymous\n",
+ DBUS_AUTH_NAME (auth));
+
+ return TRUE;
+}
+
+static void
+handle_server_shutdown_anonymous_mech (DBusAuth *auth)
+{
+
+}
+
+static dbus_bool_t
+handle_client_initial_response_anonymous_mech (DBusAuth *auth,
+ DBusString *response)
+{
+ /* Our initial response is a "trace" string which must be valid UTF-8
+ * and must be an email address if it contains '@'.
+ * We just send the dbus implementation info, like a user-agent or
+ * something, because... why not. There's nothing guaranteed here
+ * though, we could change it later.
+ */
+ DBusString plaintext;
+
+ if (!_dbus_string_init (&plaintext))
+ return FALSE;
+
+ if (!_dbus_string_append (&plaintext,
+ "libdbus " DBUS_VERSION_STRING))
+ goto failed;
+
+ if (!_dbus_string_hex_encode (&plaintext, 0,
+ response,
+ _dbus_string_get_length (response)))
+ goto failed;
+
+ _dbus_string_free (&plaintext);
+
+ return TRUE;
+
+ failed:
+ _dbus_string_free (&plaintext);
+ return FALSE;
+}
+
+static dbus_bool_t
+handle_client_data_anonymous_mech (DBusAuth *auth,
+ const DBusString *data)
+{
+
+ return TRUE;
+}
+
+static void
+handle_client_shutdown_anonymous_mech (DBusAuth *auth)
+{
+
+}
+
/* Put mechanisms here in order of preference.
- * What I eventually want to have is:
+ * Right now we have:
+ *
+ * - EXTERNAL checks socket credentials (or in the future, other info from the OS)
+ * - DBUS_COOKIE_SHA1 uses a cookie in the home directory, like xauth or ICE
+ * - ANONYMOUS checks nothing but doesn't auth the person as a user
*
- * - a mechanism that checks UNIX domain socket credentials
- * - a simple magic cookie mechanism like X11 or ICE
- * - mechanisms that chain to Cyrus SASL, so we can use anything it
- * offers such as Kerberos, X509, whatever.
+ * We might ideally add a mechanism to chain to Cyrus SASL so we can
+ * use its mechanisms as well.
*
*/
static const DBusAuthMechanismHandler
handle_client_data_cookie_sha1_mech,
NULL, NULL,
handle_client_shutdown_cookie_sha1_mech },
+ { "ANONYMOUS",
+ handle_server_data_anonymous_mech,
+ NULL, NULL,
+ handle_server_shutdown_anonymous_mech,
+ handle_client_initial_response_anonymous_mech,
+ handle_client_data_anonymous_mech,
+ NULL, NULL,
+ handle_client_shutdown_anonymous_mech },
{ NULL, NULL }
};
static dbus_bool_t
send_ok (DBusAuth *auth)
{
- if (_dbus_string_append (&auth->outgoing, "OK\r\n"))
+ int orig_len;
+
+ orig_len = _dbus_string_get_length (&auth->outgoing);
+
+ if (_dbus_string_append (&auth->outgoing, "OK ") &&
+ _dbus_string_copy (& DBUS_AUTH_SERVER (auth)->guid,
+ 0,
+ &auth->outgoing,
+ _dbus_string_get_length (&auth->outgoing)) &&
+ _dbus_string_append (&auth->outgoing, "\r\n"))
{
goto_state (auth, &server_state_waiting_for_begin);
return TRUE;
}
else
- return FALSE;
+ {
+ _dbus_string_set_length (&auth->outgoing, orig_len);
+ return FALSE;
+ }
}
static dbus_bool_t
-send_begin (DBusAuth *auth)
+send_begin (DBusAuth *auth)
{
- if (_dbus_string_append (&auth->outgoing, "BEGIN\r\n"))
+
+ if (!_dbus_string_append (&auth->outgoing,
+ "BEGIN\r\n"))
+ return FALSE;
+
+ goto_state (auth, &common_state_authenticated);
+ return TRUE;
+}
+
+static dbus_bool_t
+process_ok(DBusAuth *auth,
+ const DBusString *args_from_ok) {
+
+ int end_of_hex;
+
+ /* "args_from_ok" should be the GUID, whitespace already pulled off the front */
+ _dbus_assert (_dbus_string_get_length (& DBUS_AUTH_CLIENT (auth)->guid_from_server) == 0);
+
+ /* We decode the hex string to binary, using guid_from_server as scratch... */
+
+ end_of_hex = 0;
+ if (!_dbus_string_hex_decode (args_from_ok, 0, &end_of_hex,
+ & DBUS_AUTH_CLIENT (auth)->guid_from_server, 0))
+ return FALSE;
+
+ /* now clear out the scratch */
+ _dbus_string_set_length (& DBUS_AUTH_CLIENT (auth)->guid_from_server, 0);
+
+ if (end_of_hex != _dbus_string_get_length (args_from_ok) ||
+ end_of_hex == 0)
{
- goto_state (auth, &common_state_authenticated);
+ _dbus_verbose ("Bad GUID from server, parsed %d bytes and had %d bytes from server\n",
+ end_of_hex, _dbus_string_get_length (args_from_ok));
+ goto_state (auth, &common_state_need_disconnect);
return TRUE;
}
- else
- return FALSE;
+
+ if (!_dbus_string_copy (args_from_ok, 0, &DBUS_AUTH_CLIENT (auth)->guid_from_server, 0)) {
+ _dbus_string_set_length (& DBUS_AUTH_CLIENT (auth)->guid_from_server, 0);
+ return FALSE;
+ }
+
+ _dbus_verbose ("Got GUID '%s' from the server\n",
+ _dbus_string_get_const_data (& DBUS_AUTH_CLIENT (auth)->guid_from_server));
+
+ if (auth->unix_fd_possible)
+ return send_negotiate_unix_fd(auth);
+
+ _dbus_verbose("Not negotiating unix fd passing, since not possible\n");
+ return send_begin (auth);
}
static dbus_bool_t
static dbus_bool_t
process_data (DBusAuth *auth,
- const DBusString *args,
- DBusAuthDataFunction data_func)
+ const DBusString *args,
+ DBusAuthDataFunction data_func)
{
int end;
DBusString decoded;
}
static dbus_bool_t
+send_negotiate_unix_fd (DBusAuth *auth)
+{
+ if (!_dbus_string_append (&auth->outgoing,
+ "NEGOTIATE_UNIX_FD\r\n"))
+ return FALSE;
+
+ goto_state (auth, &client_state_waiting_for_agree_unix_fd);
+ return TRUE;
+}
+
+static dbus_bool_t
+send_agree_unix_fd (DBusAuth *auth)
+{
+ _dbus_assert(auth->unix_fd_possible);
+
+ auth->unix_fd_negotiated = TRUE;
+ _dbus_verbose("Agreed to UNIX FD passing\n");
+
+ if (!_dbus_string_append (&auth->outgoing,
+ "AGREE_UNIX_FD\r\n"))
+ return FALSE;
+
+ goto_state (auth, &server_state_waiting_for_begin);
+ return TRUE;
+}
+
+static dbus_bool_t
handle_auth (DBusAuth *auth, const DBusString *args)
{
if (_dbus_string_get_length (args) == 0)
case DBUS_AUTH_COMMAND_ERROR:
return send_rejected (auth);
+ case DBUS_AUTH_COMMAND_NEGOTIATE_UNIX_FD:
+ return send_error (auth, "Need to authenticate first");
+
case DBUS_AUTH_COMMAND_REJECTED:
case DBUS_AUTH_COMMAND_OK:
case DBUS_AUTH_COMMAND_UNKNOWN:
+ case DBUS_AUTH_COMMAND_AGREE_UNIX_FD:
default:
return send_error (auth, "Unknown command");
}
goto_state (auth, &common_state_need_disconnect);
return TRUE;
+ case DBUS_AUTH_COMMAND_NEGOTIATE_UNIX_FD:
+ return send_error (auth, "Need to authenticate first");
+
case DBUS_AUTH_COMMAND_REJECTED:
case DBUS_AUTH_COMMAND_OK:
case DBUS_AUTH_COMMAND_UNKNOWN:
+ case DBUS_AUTH_COMMAND_AGREE_UNIX_FD:
default:
return send_error (auth, "Unknown command");
}
goto_state (auth, &common_state_authenticated);
return TRUE;
+ case DBUS_AUTH_COMMAND_NEGOTIATE_UNIX_FD:
+ if (auth->unix_fd_possible)
+ return send_agree_unix_fd(auth);
+ else
+ return send_error(auth, "Unix FD passing not supported, not authenticated or otherwise not possible");
+
case DBUS_AUTH_COMMAND_REJECTED:
case DBUS_AUTH_COMMAND_OK:
case DBUS_AUTH_COMMAND_UNKNOWN:
+ case DBUS_AUTH_COMMAND_AGREE_UNIX_FD:
default:
return send_error (auth, "Unknown command");
* it lists things in that order anyhow.
*/
- _dbus_verbose ("%s: Adding mechanism %s to list we will try\n",
- DBUS_AUTH_NAME (auth), mech->mechanism);
+ if (mech != &all_mechanisms[0])
+ {
+ _dbus_verbose ("%s: Adding mechanism %s to list we will try\n",
+ DBUS_AUTH_NAME (auth), mech->mechanism);
- if (!_dbus_list_append (& DBUS_AUTH_CLIENT (auth)->mechs_to_try,
- (void*) mech))
+ if (!_dbus_list_append (& DBUS_AUTH_CLIENT (auth)->mechs_to_try,
+ (void*) mech))
+ {
+ _dbus_string_free (&m);
+ goto nomem;
+ }
+ }
+ else
{
- _dbus_string_free (&m);
- goto nomem;
+ _dbus_verbose ("%s: Already tried mechanism %s; not adding to list we will try\n",
+ DBUS_AUTH_NAME (auth), mech->mechanism);
}
}
else
return process_rejected (auth, args);
case DBUS_AUTH_COMMAND_OK:
- return send_begin (auth);
+ return process_ok(auth, args);
case DBUS_AUTH_COMMAND_ERROR:
return send_cancel (auth);
case DBUS_AUTH_COMMAND_CANCEL:
case DBUS_AUTH_COMMAND_BEGIN:
case DBUS_AUTH_COMMAND_UNKNOWN:
+ case DBUS_AUTH_COMMAND_NEGOTIATE_UNIX_FD:
+ case DBUS_AUTH_COMMAND_AGREE_UNIX_FD:
default:
return send_error (auth, "Unknown command");
}
return process_rejected (auth, args);
case DBUS_AUTH_COMMAND_OK:
- return send_begin (auth);
+ return process_ok(auth, args);
case DBUS_AUTH_COMMAND_DATA:
case DBUS_AUTH_COMMAND_ERROR:
case DBUS_AUTH_COMMAND_CANCEL:
case DBUS_AUTH_COMMAND_BEGIN:
case DBUS_AUTH_COMMAND_UNKNOWN:
+ case DBUS_AUTH_COMMAND_NEGOTIATE_UNIX_FD:
+ case DBUS_AUTH_COMMAND_AGREE_UNIX_FD:
default:
return send_error (auth, "Unknown command");
}
case DBUS_AUTH_COMMAND_OK:
case DBUS_AUTH_COMMAND_ERROR:
case DBUS_AUTH_COMMAND_UNKNOWN:
+ case DBUS_AUTH_COMMAND_NEGOTIATE_UNIX_FD:
+ case DBUS_AUTH_COMMAND_AGREE_UNIX_FD:
default:
goto_state (auth, &common_state_need_disconnect);
return TRUE;
}
}
+static dbus_bool_t
+handle_client_state_waiting_for_agree_unix_fd(DBusAuth *auth,
+ DBusAuthCommand command,
+ const DBusString *args)
+{
+ switch (command)
+ {
+ case DBUS_AUTH_COMMAND_AGREE_UNIX_FD:
+ _dbus_assert(auth->unix_fd_possible);
+ auth->unix_fd_negotiated = TRUE;
+ _dbus_verbose("Successfully negotiated UNIX FD passing\n");
+ return send_begin (auth);
+
+ case DBUS_AUTH_COMMAND_ERROR:
+ _dbus_assert(auth->unix_fd_possible);
+ auth->unix_fd_negotiated = FALSE;
+ _dbus_verbose("Failed to negotiate UNIX FD passing\n");
+ return send_begin (auth);
+
+ case DBUS_AUTH_COMMAND_OK:
+ case DBUS_AUTH_COMMAND_DATA:
+ case DBUS_AUTH_COMMAND_REJECTED:
+ case DBUS_AUTH_COMMAND_AUTH:
+ case DBUS_AUTH_COMMAND_CANCEL:
+ case DBUS_AUTH_COMMAND_BEGIN:
+ case DBUS_AUTH_COMMAND_UNKNOWN:
+ case DBUS_AUTH_COMMAND_NEGOTIATE_UNIX_FD:
+ default:
+ return send_error (auth, "Unknown command");
+ }
+}
+
/**
* Mapping from command name to enum
*/
DBusAuthCommand command; /**< Corresponding enum */
} DBusAuthCommandName;
-static DBusAuthCommandName auth_command_names[] = {
- { "AUTH", DBUS_AUTH_COMMAND_AUTH },
- { "CANCEL", DBUS_AUTH_COMMAND_CANCEL },
- { "DATA", DBUS_AUTH_COMMAND_DATA },
- { "BEGIN", DBUS_AUTH_COMMAND_BEGIN },
- { "REJECTED", DBUS_AUTH_COMMAND_REJECTED },
- { "OK", DBUS_AUTH_COMMAND_OK },
- { "ERROR", DBUS_AUTH_COMMAND_ERROR }
+static const DBusAuthCommandName auth_command_names[] = {
+ { "AUTH", DBUS_AUTH_COMMAND_AUTH },
+ { "CANCEL", DBUS_AUTH_COMMAND_CANCEL },
+ { "DATA", DBUS_AUTH_COMMAND_DATA },
+ { "BEGIN", DBUS_AUTH_COMMAND_BEGIN },
+ { "REJECTED", DBUS_AUTH_COMMAND_REJECTED },
+ { "OK", DBUS_AUTH_COMMAND_OK },
+ { "ERROR", DBUS_AUTH_COMMAND_ERROR },
+ { "NEGOTIATE_UNIX_FD", DBUS_AUTH_COMMAND_NEGOTIATE_UNIX_FD },
+ { "AGREE_UNIX_FD", DBUS_AUTH_COMMAND_AGREE_UNIX_FD }
};
static DBusAuthCommand
}
static void
-goto_state (DBusAuth *auth, const DBusAuthStateData *state)
+goto_state (DBusAuth *auth,
+ const DBusAuthStateData *state)
{
_dbus_verbose ("%s: going from state %s to state %s\n",
DBUS_AUTH_NAME (auth),
if (!_dbus_string_move (&line, i, &args, 0))
goto out;
+
+ /* FIXME 1.0 we should probably validate that only the allowed
+ * chars are in the command name
+ */
command = lookup_command_from_name (&line);
if (!(* auth->state->handler) (auth, command, &args))
/**
* Creates a new auth conversation object for the server side.
- * See doc/dbus-sasl-profile.txt for full details on what
- * this object does.
+ * See http://dbus.freedesktop.org/doc/dbus-specification.html#auth-protocol
+ * for full details on what this object does.
*
* @returns the new object or #NULL if no memory
*/
DBusAuth*
-_dbus_auth_server_new (void)
+_dbus_auth_server_new (const DBusString *guid)
{
DBusAuth *auth;
DBusAuthServer *server_auth;
+ DBusString guid_copy;
- auth = _dbus_auth_new (sizeof (DBusAuthServer));
- if (auth == NULL)
+ if (!_dbus_string_init (&guid_copy))
return NULL;
+ if (!_dbus_string_copy (guid, 0, &guid_copy, 0))
+ {
+ _dbus_string_free (&guid_copy);
+ return NULL;
+ }
+
+ auth = _dbus_auth_new (sizeof (DBusAuthServer));
+ if (auth == NULL)
+ {
+ _dbus_string_free (&guid_copy);
+ return NULL;
+ }
+
auth->side = auth_side_server;
auth->state = &server_state_waiting_for_auth;
server_auth = DBUS_AUTH_SERVER (auth);
+ server_auth->guid = guid_copy;
+
/* perhaps this should be per-mechanism with a lower
* max
*/
/**
* Creates a new auth conversation object for the client side.
- * See doc/dbus-sasl-profile.txt for full details on what
- * this object does.
+ * See http://dbus.freedesktop.org/doc/dbus-specification.html#auth-protocol
+ * for full details on what this object does.
*
* @returns the new object or #NULL if no memory
*/
_dbus_auth_client_new (void)
{
DBusAuth *auth;
+ DBusString guid_str;
+
+ if (!_dbus_string_init (&guid_str))
+ return NULL;
auth = _dbus_auth_new (sizeof (DBusAuthClient));
if (auth == NULL)
- return NULL;
+ {
+ _dbus_string_free (&guid_str);
+ return NULL;
+ }
+
+ DBUS_AUTH_CLIENT (auth)->guid_from_server = guid_str;
auth->side = auth_side_client;
auth->state = &client_state_need_send_auth;
return auth;
}
+#ifdef ENABLE_KDBUS_TRANSPORT
+/**
+ * Creates a new auth conversation object for the client side of kdbus.
+ * In fact it only initialize structures and sets authenticated state
+ * because of different authentication-like mechanism in kdbus - policies
+ * TODO Probably to be checked and modified when kdbus will be documented
+ *
+ * @returns the new object or #NULL if no memory
+ */
+DBusAuth*
+_dbus_auth_client_new_kdbus (void)
+{
+ DBusAuth *auth;
+ DBusString guid_str;
+
+ if (!_dbus_string_init (&guid_str))
+ return NULL;
+
+ auth = _dbus_auth_new (sizeof (DBusAuthClient));
+ if (auth == NULL)
+ {
+ _dbus_string_free (&guid_str);
+ return NULL;
+ }
+
+ DBUS_AUTH_CLIENT (auth)->guid_from_server = guid_str;
+
+ auth->side = auth_side_client;
+ auth->state = &common_state_authenticated;
+ auth->unix_fd_negotiated = TRUE;
+
+ /* Start the auth conversation by sending AUTH for our default
+ * mechanism */
+/* if (!send_auth (auth, &all_mechanisms[0]))
+ {
+ _dbus_auth_unref (auth);
+ return NULL;
+ }*/
+
+ return auth;
+}
+#endif
+
/**
* Increments the refcount of an auth object.
*
if (DBUS_AUTH_IS_CLIENT (auth))
{
+ _dbus_string_free (& DBUS_AUTH_CLIENT (auth)->guid_from_server);
_dbus_list_clear (& DBUS_AUTH_CLIENT (auth)->mechs_to_try);
}
+ else
+ {
+ _dbus_assert (DBUS_AUTH_IS_SERVER (auth));
+
+ _dbus_string_free (& DBUS_AUTH_SERVER (auth)->guid);
+ }
if (auth->keyring)
_dbus_keyring_unref (auth->keyring);
_dbus_string_free (&auth->outgoing);
dbus_free_string_array (auth->allowed_mechs);
+
+ _dbus_credentials_unref (auth->credentials);
+ _dbus_credentials_unref (auth->authorized_identity);
+ _dbus_credentials_unref (auth->desired_identity);
dbus_free (auth);
}
* the peer. If no encoding was negotiated, just copies the bytes (you
* can avoid this by checking _dbus_auth_needs_decoding()).
*
- * @todo We need to be able to distinguish "out of memory" error
+ * @todo 1.0? We need to be able to distinguish "out of memory" error
* from "the data is hosed" error.
*
* @param auth the auth conversation
*
* @param auth the auth conversation
* @param credentials the credentials received
+ * @returns #FALSE on OOM
*/
-void
+dbus_bool_t
_dbus_auth_set_credentials (DBusAuth *auth,
- const DBusCredentials *credentials)
+ DBusCredentials *credentials)
{
- auth->credentials = *credentials;
+ _dbus_credentials_clear (auth->credentials);
+ return _dbus_credentials_add_credentials (auth->credentials,
+ credentials);
}
/**
* Gets the identity we authorized the client as. Apps may have
* different policies as to what identities they allow.
*
+ * Returned credentials are not a copy and should not be modified
+ *
* @param auth the auth conversation
- * @param credentials the credentials we've authorized
+ * @returns the credentials we've authorized BY REFERENCE do not modify
*/
-void
-_dbus_auth_get_identity (DBusAuth *auth,
- DBusCredentials *credentials)
+DBusCredentials*
+_dbus_auth_get_identity (DBusAuth *auth)
{
if (auth->state == &common_state_authenticated)
- *credentials = auth->authorized_identity;
+ {
+ return auth->authorized_identity;
+ }
else
- _dbus_credentials_clear (credentials);
+ {
+ /* FIXME instead of this, keep an empty credential around that
+ * doesn't require allocation or something
+ */
+ /* return empty credentials */
+ _dbus_assert (_dbus_credentials_are_empty (auth->authorized_identity));
+ return auth->authorized_identity;
+ }
+}
+
+/**
+ * Gets the GUID from the server if we've authenticated; gets
+ * #NULL otherwise.
+ * @param auth the auth object
+ * @returns the GUID in ASCII hex format
+ */
+const char*
+_dbus_auth_get_guid_from_server (DBusAuth *auth)
+{
+ _dbus_assert (DBUS_AUTH_IS_CLIENT (auth));
+
+ if (auth->state == &common_state_authenticated)
+ return _dbus_string_get_const_data (& DBUS_AUTH_CLIENT (auth)->guid_from_server);
+ else
+ return NULL;
}
/**
&auth->context, 0, _dbus_string_get_length (context));
}
-/** @} */
-
-#ifdef DBUS_BUILD_TESTS
-#include "dbus-test.h"
-#include "dbus-auth-script.h"
-#include <stdio.h>
-
-static dbus_bool_t
-process_test_subdir (const DBusString *test_base_dir,
- const char *subdir)
-{
- DBusString test_directory;
- DBusString filename;
- DBusDirIter *dir;
- dbus_bool_t retval;
- DBusError error;
-
- retval = FALSE;
- dir = NULL;
-
- if (!_dbus_string_init (&test_directory))
- _dbus_assert_not_reached ("didn't allocate test_directory\n");
-
- _dbus_string_init_const (&filename, subdir);
-
- if (!_dbus_string_copy (test_base_dir, 0,
- &test_directory, 0))
- _dbus_assert_not_reached ("couldn't copy test_base_dir to test_directory");
-
- if (!_dbus_concat_dir_and_file (&test_directory, &filename))
- _dbus_assert_not_reached ("couldn't allocate full path");
-
- _dbus_string_free (&filename);
- if (!_dbus_string_init (&filename))
- _dbus_assert_not_reached ("didn't allocate filename string\n");
-
- dbus_error_init (&error);
- dir = _dbus_directory_open (&test_directory, &error);
- if (dir == NULL)
- {
- _dbus_warn ("Could not open %s: %s\n",
- _dbus_string_get_const_data (&test_directory),
- error.message);
- dbus_error_free (&error);
- goto failed;
- }
-
- printf ("Testing %s:\n", subdir);
-
- next:
- while (_dbus_directory_get_next_file (dir, &filename, &error))
- {
- DBusString full_path;
-
- if (!_dbus_string_init (&full_path))
- _dbus_assert_not_reached ("couldn't init string");
-
- if (!_dbus_string_copy (&test_directory, 0, &full_path, 0))
- _dbus_assert_not_reached ("couldn't copy dir to full_path");
-
- if (!_dbus_concat_dir_and_file (&full_path, &filename))
- _dbus_assert_not_reached ("couldn't concat file to dir");
-
- if (!_dbus_string_ends_with_c_str (&filename, ".auth-script"))
- {
- _dbus_verbose ("Skipping non-.auth-script file %s\n",
- _dbus_string_get_const_data (&filename));
- _dbus_string_free (&full_path);
- goto next;
- }
-
- printf (" %s\n", _dbus_string_get_const_data (&filename));
-
- if (!_dbus_auth_script_run (&full_path))
- {
- _dbus_string_free (&full_path);
- goto failed;
- }
- else
- _dbus_string_free (&full_path);
- }
-
- if (dbus_error_is_set (&error))
- {
- _dbus_warn ("Could not get next file in %s: %s\n",
- _dbus_string_get_const_data (&test_directory), error.message);
- dbus_error_free (&error);
- goto failed;
- }
-
- retval = TRUE;
-
- failed:
-
- if (dir)
- _dbus_directory_close (dir);
- _dbus_string_free (&test_directory);
- _dbus_string_free (&filename);
-
- return retval;
-}
-
-static dbus_bool_t
-process_test_dirs (const char *test_data_dir)
+/**
+ * Sets whether unix fd passing is potentially on the transport and
+ * hence shall be negotiated.
+ *
+ * @param auth the auth conversation
+ * @param b TRUE when unix fd passing shall be negotiated, otherwise FALSE
+ */
+void
+_dbus_auth_set_unix_fd_possible(DBusAuth *auth, dbus_bool_t b)
{
- DBusString test_directory;
- dbus_bool_t retval;
-
- retval = FALSE;
-
- _dbus_string_init_const (&test_directory, test_data_dir);
-
- if (!process_test_subdir (&test_directory, "auth"))
- goto failed;
-
- retval = TRUE;
-
- failed:
-
- _dbus_string_free (&test_directory);
-
- return retval;
+ auth->unix_fd_possible = b;
}
+/**
+ * Queries whether unix fd passing was successfully negotiated.
+ *
+ * @param auth the auth conversion
+ * @returns #TRUE when unix fd passing was negotiated.
+ */
dbus_bool_t
-_dbus_auth_test (const char *test_data_dir)
+_dbus_auth_get_unix_fd_negotiated(DBusAuth *auth)
{
-
- if (test_data_dir == NULL)
- return TRUE;
-
- if (!process_test_dirs (test_data_dir))
- return FALSE;
-
- return TRUE;
+ return auth->unix_fd_negotiated;
}
-#endif /* DBUS_BUILD_TESTS */
+/** @} */
+
+/* tests in dbus-auth-util.c */
projects / platform / upstream / dbus.git / blobdiff