/**
* Opens a TCP socket transport.
*
* @param entry the address entry to try opening as a tcp transport.
* @param transport_p return location for the opened transport
* @param error error to be set
* @returns result of the attempt
*/
DBusTransportOpenResult
_dbus_transport_open_socket(DBusAddressEntry *entry,
DBusTransport **transport_p,
DBusError *error)
{
const char *method;
dbus_bool_t isTcp;
dbus_bool_t isNonceTcp;
method = dbus_address_entry_get_method (entry);
_dbus_assert (method != NULL);
isTcp = strcmp (method, "tcp") == 0;
isNonceTcp = strcmp (method, "nonce-tcp") == 0;
if (isTcp || isNonceTcp)
{
const char *host = dbus_address_entry_get_value (entry, "host");
const char *port = dbus_address_entry_get_value (entry, "port");
const char *family = dbus_address_entry_get_value (entry, "family");
const char *noncefile = dbus_address_entry_get_value (entry, "noncefile");
if ((isNonceTcp == TRUE) != (noncefile != NULL)) {
_dbus_set_bad_address (error, method, "noncefile", NULL);
return DBUS_TRANSPORT_OPEN_BAD_ADDRESS;
}
if (port == NULL)
{
_dbus_set_bad_address (error, method, "port", NULL);
return DBUS_TRANSPORT_OPEN_BAD_ADDRESS;
}
*transport_p = _dbus_transport_new_for_tcp_socket (host, port, family, noncefile, error);
if (*transport_p == NULL)
{
_DBUS_ASSERT_ERROR_IS_SET (error);
return DBUS_TRANSPORT_OPEN_DID_NOT_CONNECT;
}
else
{
_DBUS_ASSERT_ERROR_IS_CLEAR (error);
return DBUS_TRANSPORT_OPEN_OK;
}
}
else
{
_DBUS_ASSERT_ERROR_IS_CLEAR (error);
return DBUS_TRANSPORT_OPEN_NOT_HANDLED;
}
}
/**
* Tries to interpret the address entry as a debug pipe entry.
*
* Sets error if the result is not OK.
*
* @param entry an address entry
* @param server_p location to store a new DBusServer, or #NULL on failure.
* @param error location to store rationale for failure on bad address
* @returns the outcome
*
*/
DBusServerListenResult
_dbus_server_listen_debug_pipe (DBusAddressEntry *entry,
DBusServer **server_p,
DBusError *error)
{
const char *method;
*server_p = NULL;
method = dbus_address_entry_get_method (entry);
if (strcmp (method, "debug-pipe") == 0)
{
const char *name = dbus_address_entry_get_value (entry, "name");
if (name == NULL)
{
_dbus_set_bad_address(error, "debug-pipe", "name",
NULL);
return DBUS_SERVER_LISTEN_BAD_ADDRESS;
}
*server_p = _dbus_server_debug_pipe_new (name, error);
if (*server_p)
{
_DBUS_ASSERT_ERROR_IS_CLEAR(error);
return DBUS_SERVER_LISTEN_OK;
}
else
{
_DBUS_ASSERT_ERROR_IS_SET(error);
return DBUS_SERVER_LISTEN_DID_NOT_CONNECT;
}
}
else
{
_DBUS_ASSERT_ERROR_IS_CLEAR(error);
return DBUS_SERVER_LISTEN_NOT_HANDLED;
}
}
/**
* Opens a debug pipe transport, used in the test suite.
*
* @param entry the address entry to try opening as debug-pipe
* @param transport_p return location for the opened transport
* @param error error to be set
* @returns result of the attempt
*/
DBusTransportOpenResult
_dbus_transport_open_debug_pipe (DBusAddressEntry *entry,
DBusTransport **transport_p,
DBusError *error)
{
const char *method;
method = dbus_address_entry_get_method (entry);
_dbus_assert (method != NULL);
if (strcmp (method, "debug-pipe") == 0)
{
const char *name = dbus_address_entry_get_value (entry, "name");
if (name == NULL)
{
_dbus_set_bad_address (error, "debug-pipe", "name",
NULL);
return DBUS_TRANSPORT_OPEN_BAD_ADDRESS;
}
*transport_p = _dbus_transport_debug_pipe_new (name, error);
if (*transport_p == NULL)
{
_DBUS_ASSERT_ERROR_IS_SET (error);
return DBUS_TRANSPORT_OPEN_DID_NOT_CONNECT;
}
else
{
_DBUS_ASSERT_ERROR_IS_CLEAR (error);
return DBUS_TRANSPORT_OPEN_OK;
}
}
else
{
_DBUS_ASSERT_ERROR_IS_CLEAR (error);
return DBUS_TRANSPORT_OPEN_NOT_HANDLED;
}
}
/**
* Opens a VMCI stream socket transport.
*
* @param entry the address entry to try opening as a tcp transport.
* @param transport_p return location for the opened transport
* @param error error to be set
* @returns result of the attempt
*/
DBusTransportOpenResult
_dbus_transport_open_vmci(DBusAddressEntry *entry,
DBusTransport **transport_p,
DBusError *error)
{
const char *method;
const char *cid;
const char *port;
method = dbus_address_entry_get_method (entry);
_dbus_assert (method != NULL);
if (strcmp (method, "vmci") != 0) {
_DBUS_ASSERT_ERROR_IS_CLEAR (error);
return DBUS_TRANSPORT_OPEN_NOT_HANDLED;
}
cid = dbus_address_entry_get_value (entry, "cid");
port = dbus_address_entry_get_value (entry, "port");
if (0 || port == NULL)
{
_dbus_set_bad_address (error, method, "port", NULL);
return DBUS_TRANSPORT_OPEN_BAD_ADDRESS;
}
*transport_p = _dbus_transport_new_for_vmci (cid, port, error);
if (*transport_p == NULL)
{
_DBUS_ASSERT_ERROR_IS_SET (error);
return DBUS_TRANSPORT_OPEN_DID_NOT_CONNECT;
}
else
{
_DBUS_ASSERT_ERROR_IS_CLEAR (error);
return DBUS_TRANSPORT_OPEN_OK;
}
}
/**
* Tries to interpret the address entry in a platform-specific
* way, creating a platform-specific server type if appropriate.
* Sets error if the result is not OK.
*
* @param entry an address entry
* @param server_p location to store a new DBusServer, or #NULL on failure.
* @param error location to store rationale for failure on bad address
* @returns the outcome
*
*/
DBusServerListenResult
_dbus_server_listen_platform_specific (DBusAddressEntry *entry,
DBusServer **server_p,
DBusError *error)
{
const char *method;
*server_p = NULL;
method = dbus_address_entry_get_method (entry);
if (strcmp (method, "unix") == 0)
{
const char *path = dbus_address_entry_get_value (entry, "path");
const char *tmpdir = dbus_address_entry_get_value (entry, "tmpdir");
const char *abstract = dbus_address_entry_get_value (entry, "abstract");
if (path == NULL && tmpdir == NULL && abstract == NULL)
{
_dbus_set_bad_address(error, "unix",
"path or tmpdir or abstract",
NULL);
return DBUS_SERVER_LISTEN_BAD_ADDRESS;
}
if ((path && tmpdir) ||
(path && abstract) ||
(tmpdir && abstract))
{
_dbus_set_bad_address(error, NULL, NULL,
"cannot specify two of \"path\" and \"tmpdir\" and \"abstract\" at the same time");
return DBUS_SERVER_LISTEN_BAD_ADDRESS;
}
if (tmpdir != NULL)
{
DBusString full_path;
DBusString filename;
if (!_dbus_string_init (&full_path))
{
dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
return DBUS_SERVER_LISTEN_DID_NOT_CONNECT;
}
if (!_dbus_string_init (&filename))
{
_dbus_string_free (&full_path);
dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
return DBUS_SERVER_LISTEN_DID_NOT_CONNECT;
}
if (!_dbus_string_append (&filename,
"dbus-") ||
!_dbus_generate_random_ascii (&filename, 10) ||
!_dbus_string_append (&full_path, tmpdir) ||
!_dbus_concat_dir_and_file (&full_path, &filename))
{
_dbus_string_free (&full_path);
_dbus_string_free (&filename);
dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
return DBUS_SERVER_LISTEN_DID_NOT_CONNECT;
}
/* Always use abstract namespace if possible with tmpdir */
*server_p =
_dbus_server_new_for_domain_socket (_dbus_string_get_const_data (&full_path),
#ifdef HAVE_ABSTRACT_SOCKETS
TRUE,
#else
FALSE,
#endif
error);
_dbus_string_free (&full_path);
_dbus_string_free (&filename);
}
else
{
if (path)
*server_p = _dbus_server_new_for_domain_socket (path, FALSE, error);
else
*server_p = _dbus_server_new_for_domain_socket (abstract, TRUE, error);
}
if (*server_p != NULL)
{
_DBUS_ASSERT_ERROR_IS_CLEAR(error);
return DBUS_SERVER_LISTEN_OK;
}
else
{
_DBUS_ASSERT_ERROR_IS_SET(error);
return DBUS_SERVER_LISTEN_DID_NOT_CONNECT;
}
}
else if (strcmp (method, "systemd") == 0)
{
int i, n, *fds;
DBusString address;
n = _dbus_listen_systemd_sockets (&fds, error);
if (n < 0)
{
_DBUS_ASSERT_ERROR_IS_SET (error);
return DBUS_SERVER_LISTEN_DID_NOT_CONNECT;
}
if(!_dbus_string_init(&address))
goto oom;
for (i = 0; i < n; i++)
{
if ( i > 0)
{
if(!_dbus_string_append (&address, ";"))
goto oom;
}
if(!_dbus_append_address_from_socket (fds[i], &address))
goto oom;
}
*server_p = _dbus_server_new_for_socket (fds, n, &address, NULL);
if (*server_p == NULL)
goto oom;
dbus_free (fds);
return DBUS_SERVER_LISTEN_OK;
oom:
dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
for (i = 0; i < n; i++)
{
_dbus_close_socket (fds[i], NULL);
}
dbus_free (fds);
_dbus_string_free (&address);
dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
return DBUS_SERVER_LISTEN_DID_NOT_CONNECT;
}
#ifdef DBUS_ENABLE_LAUNCHD
else if (strcmp (method, "launchd") == 0)
{
const char *launchd_env_var = dbus_address_entry_get_value (entry, "env");
if (launchd_env_var == NULL)
{
_dbus_set_bad_address (error, "launchd", "env", NULL);
return DBUS_SERVER_LISTEN_DID_NOT_CONNECT;
}
*server_p = _dbus_server_new_for_launchd (launchd_env_var, error);
if (*server_p != NULL)
{
_DBUS_ASSERT_ERROR_IS_CLEAR(error);
return DBUS_SERVER_LISTEN_OK;
}
else
{
_DBUS_ASSERT_ERROR_IS_SET(error);
return DBUS_SERVER_LISTEN_DID_NOT_CONNECT;
}
}
#endif
else
{
/* If we don't handle the method, we return NULL with the
* error unset
*/
_DBUS_ASSERT_ERROR_IS_CLEAR(error);
return DBUS_SERVER_LISTEN_NOT_HANDLED;
}
}
/**
* Opens platform specific transport types.
*
* @param entry the address entry to try opening
* @param transport_p return location for the opened transport
* @param error error to be set
* @returns result of the attempt
*/
DBusTransportOpenResult
_dbus_transport_open_platform_specific (DBusAddressEntry *entry,
DBusTransport **transport_p,
DBusError *error)
{
const char *method;
method = dbus_address_entry_get_method (entry);
_dbus_assert (method != NULL);
if (strcmp (method, "unix") == 0)
{
const char *path = dbus_address_entry_get_value (entry, "path");
const char *tmpdir = dbus_address_entry_get_value (entry, "tmpdir");
const char *abstract = dbus_address_entry_get_value (entry, "abstract");
if (tmpdir != NULL)
{
_dbus_set_bad_address (error, NULL, NULL,
"cannot use the \"tmpdir\" option for an address to connect to, only in an address to listen on");
return DBUS_TRANSPORT_OPEN_BAD_ADDRESS;
}
if (path == NULL && abstract == NULL)
{
_dbus_set_bad_address (error, "unix",
"path or abstract",
NULL);
return DBUS_TRANSPORT_OPEN_BAD_ADDRESS;
}
if (path != NULL && abstract != NULL)
{
_dbus_set_bad_address (error, NULL, NULL,
"can't specify both \"path\" and \"abstract\" options in an address");
return DBUS_TRANSPORT_OPEN_BAD_ADDRESS;
}
if (path)
*transport_p = _dbus_transport_new_for_domain_socket (path, FALSE,
error);
else
*transport_p = _dbus_transport_new_for_domain_socket (abstract, TRUE,
error);
if (*transport_p == NULL)
{
_DBUS_ASSERT_ERROR_IS_SET (error);
return DBUS_TRANSPORT_OPEN_DID_NOT_CONNECT;
}
else
{
_DBUS_ASSERT_ERROR_IS_CLEAR (error);
return DBUS_TRANSPORT_OPEN_OK;
}
}
else
{
_DBUS_ASSERT_ERROR_IS_CLEAR (error);
return DBUS_TRANSPORT_OPEN_NOT_HANDLED;
}
}
/**
* Try to open a new transport for the given address entry. (This
* opens a client-side-of-the-connection transport.)
*
* @param entry the address entry
* @param error location to store reason for failure.
* @returns new transport of #NULL on failure.
*/
DBusTransport*
_dbus_transport_open (DBusAddressEntry *entry,
DBusError *error)
{
DBusTransport *transport;
const char *expected_guid_orig;
char *expected_guid;
int i;
DBusError tmp_error = DBUS_ERROR_INIT;
_DBUS_ASSERT_ERROR_IS_CLEAR (error);
transport = NULL;
expected_guid_orig = dbus_address_entry_get_value (entry, "guid");
expected_guid = _dbus_strdup (expected_guid_orig);
if (expected_guid_orig != NULL && expected_guid == NULL)
{
_DBUS_SET_OOM (error);
return NULL;
}
for (i = 0; i < (int) _DBUS_N_ELEMENTS (open_funcs); ++i)
{
DBusTransportOpenResult result;
_DBUS_ASSERT_ERROR_IS_CLEAR (&tmp_error);
result = (* open_funcs[i].func) (entry, &transport, &tmp_error);
switch (result)
{
case DBUS_TRANSPORT_OPEN_OK:
_DBUS_ASSERT_ERROR_IS_CLEAR (&tmp_error);
goto out;
break;
case DBUS_TRANSPORT_OPEN_NOT_HANDLED:
_DBUS_ASSERT_ERROR_IS_CLEAR (&tmp_error);
/* keep going through the loop of open funcs */
break;
case DBUS_TRANSPORT_OPEN_BAD_ADDRESS:
_DBUS_ASSERT_ERROR_IS_SET (&tmp_error);
goto out;
break;
case DBUS_TRANSPORT_OPEN_DID_NOT_CONNECT:
_DBUS_ASSERT_ERROR_IS_SET (&tmp_error);
goto out;
break;
}
}
out:
if (transport == NULL)
{
if (!dbus_error_is_set (&tmp_error))
_dbus_set_bad_address (&tmp_error,
NULL, NULL,
"Unknown address type (examples of valid types are \"tcp\" and on UNIX \"unix\")");
_DBUS_ASSERT_ERROR_IS_SET (&tmp_error);
dbus_move_error(&tmp_error, error);
dbus_free (expected_guid);
}
else
{
_DBUS_ASSERT_ERROR_IS_CLEAR (&tmp_error);
/* In the case of autostart the initial guid is NULL
* and the autostart transport recursively calls
* _dbus_open_transport wich returns a transport
* with a guid. That guid is the definitive one.
*
* FIXME: if more transports are added they may have
* an effect on the expected_guid semantics (i.e.
* expected_guid and transport->expected_guid may
* both have values). This is very unlikely though
* we should either throw asserts here for those
* corner cases or refactor the code so it is
* clearer on what is expected and what is not
*/
if(expected_guid)
transport->expected_guid = expected_guid;
}
return transport;
}
