--- /dev/null
+/*
+ * Copyright (C) 2013 Marin Hannache <ipxe@mareo.fr>.
+ *
+ * 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 the Free Software Foundation; either version 2 of the
+ * License, or any later version.
+ *
+ * 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; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ */
+
+#include <stdint.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <assert.h>
+#include <errno.h>
+#include <byteswap.h>
+#include <ipxe/socket.h>
+#include <ipxe/tcpip.h>
+#include <ipxe/in.h>
+#include <ipxe/iobuf.h>
+#include <ipxe/dhcp.h>
+#include <ipxe/xfer.h>
+#include <ipxe/open.h>
+#include <ipxe/uri.h>
+#include <ipxe/features.h>
+#include <ipxe/oncrpc.h>
+#include <ipxe/oncrpc_iob.h>
+#include <ipxe/init.h>
+#include <ipxe/settings.h>
+#include <ipxe/version.h>
+
+/** @file
+ *
+ * SUN ONC RPC protocol
+ *
+ */
+
+/** Set most significant bit to 1. */
+#define SET_LAST_FRAME( x ) ( (x) | 1 << 31 )
+#define GET_FRAME_SIZE( x ) ( (x) & ~( 1 << 31 ) )
+
+#define ONCRPC_CALL 0
+#define ONCRPC_REPLY 1
+
+/** AUTH NONE authentication flavor */
+struct oncrpc_cred oncrpc_auth_none = {
+ .flavor = ONCRPC_AUTH_NONE,
+ .length = 0
+};
+
+const struct setting uid_setting __setting ( SETTING_AUTH, uid ) = {
+ .name = "uid",
+ .description = "User ID",
+ .tag = DHCP_EB_UID,
+ .type = &setting_type_uint32
+};
+
+const struct setting gid_setting __setting ( SETTING_AUTH, gid ) = {
+ .name = "gid",
+ .description = "Group ID",
+ .tag = DHCP_EB_GID,
+ .type = &setting_type_uint32
+};
+
+/**
+ * Initialize an ONC RPC AUTH SYS credential structure
+ *
+ * @v auth_sys The structure to initialize
+ *
+ * The hostname field is filled with the value of the hostname setting, if the
+ * hostname setting is empty, PRODUCT_SHORT_NAME (usually "iPXE") is used
+ * instead.
+ */
+int oncrpc_init_cred_sys ( struct oncrpc_cred_sys *auth_sys ) {
+ if ( ! auth_sys )
+ return -EINVAL;
+
+ fetch_string_setting_copy ( NULL, &hostname_setting,
+ &auth_sys->hostname );
+ if ( ! auth_sys->hostname )
+ if ( ! ( auth_sys->hostname = strdup ( product_short_name ) ) )
+ return -ENOMEM;
+
+ auth_sys->uid = fetch_uintz_setting ( NULL, &uid_setting );
+ auth_sys->gid = fetch_uintz_setting ( NULL, &uid_setting );
+ auth_sys->aux_gid_len = 0;
+ auth_sys->stamp = 0;
+
+ auth_sys->credential.flavor = ONCRPC_AUTH_SYS;
+ auth_sys->credential.length = 16 +
+ oncrpc_strlen ( auth_sys->hostname );
+
+ return 0;
+}
+
+/**
+ * Prepare an ONC RPC session structure to be used by the ONC RPC layer
+ *
+ * @v session ONC RPC session
+ * @v credential Credential structure pointer
+ * @v verifier Verifier structure pointer
+ * @v prog_name ONC RPC program number
+ * @v prog_vers ONC RPC program version number
+ */
+void oncrpc_init_session ( struct oncrpc_session *session,
+ struct oncrpc_cred *credential,
+ struct oncrpc_cred *verifier, uint32_t prog_name,
+ uint32_t prog_vers ) {
+ if ( ! session )
+ return;
+
+ session->rpc_id = rand();
+ session->credential = credential;
+ session->verifier = verifier;
+ session->prog_name = prog_name;
+ session->prog_vers = prog_vers;
+}
+
+int oncrpc_call ( struct interface *intf, struct oncrpc_session *session,
+ uint32_t proc_name, const struct oncrpc_field fields[] ) {
+ int rc;
+ size_t frame_size;
+ struct io_buffer *io_buf;
+
+ if ( ! session )
+ return -EINVAL;
+
+ struct oncrpc_field header[] = {
+ ONCRPC_FIELD ( int32, 0 ),
+ ONCRPC_FIELD ( int32, ++session->rpc_id ),
+ ONCRPC_FIELD ( int32, ONCRPC_CALL ),
+ ONCRPC_FIELD ( int32, ONCRPC_VERS ),
+ ONCRPC_FIELD ( int32, session->prog_name ),
+ ONCRPC_FIELD ( int32, session->prog_vers ),
+ ONCRPC_FIELD ( int32, proc_name ),
+ ONCRPC_FIELD ( cred, session->credential ),
+ ONCRPC_FIELD ( cred, session->verifier ),
+ ONCRPC_FIELD_END,
+ };
+
+ frame_size = oncrpc_compute_size ( header );
+ frame_size += oncrpc_compute_size ( fields );
+
+ io_buf = alloc_iob ( frame_size );
+ if ( ! io_buf )
+ return -ENOBUFS;
+
+ header[0].value.int32 = SET_LAST_FRAME ( frame_size -
+ sizeof ( uint32_t ) );
+
+ oncrpc_iob_add_fields ( io_buf, header );
+ oncrpc_iob_add_fields ( io_buf, fields );
+
+ rc = xfer_deliver_iob ( intf, io_buf );
+ if ( rc != 0 )
+ free_iob ( io_buf );
+
+ return rc;
+}
+
+size_t oncrpc_compute_size ( const struct oncrpc_field fields[] ) {
+
+ size_t i;
+ size_t size = 0;
+
+ for ( i = 0; fields[i].type != oncrpc_none; i++ ) {
+ switch ( fields[i].type ) {
+ case oncrpc_int32:
+ size += sizeof ( uint32_t );
+ break;
+
+ case oncrpc_int64:
+ size += sizeof ( uint64_t );
+ break;
+
+ case oncrpc_str:
+ size += oncrpc_strlen ( fields[i].value.str );
+ break;
+
+ case oncrpc_array:
+ size += oncrpc_align ( fields[i].value.array.length );
+ size += sizeof ( uint32_t );
+ break;
+
+ case oncrpc_intarray:
+ size += sizeof ( uint32_t ) *
+ fields[i].value.intarray.length;
+ size += sizeof ( uint32_t );
+ break;
+
+ case oncrpc_cred:
+ size += fields[i].value.cred->length;
+ size += 2 * sizeof ( uint32_t );
+ break;
+
+ default:
+ return size;
+ }
+ }
+
+ return size;
+}
+
+/**
+ * Parse an I/O buffer to extract a ONC RPC REPLY
+ * @v session ONC RPC session
+ * @v reply Reply structure where data will be saved
+ * @v io_buf I/O buffer
+ */
+int oncrpc_get_reply ( struct oncrpc_session *session __unused,
+ struct oncrpc_reply *reply, struct io_buffer *io_buf ) {
+ if ( ! reply || ! io_buf )
+ return -EINVAL;
+
+ reply->frame_size = GET_FRAME_SIZE ( oncrpc_iob_get_int ( io_buf ) );
+ reply->rpc_id = oncrpc_iob_get_int ( io_buf );
+
+ /* iPXE has no support for handling ONC RPC call */
+ if ( oncrpc_iob_get_int ( io_buf ) != ONCRPC_REPLY )
+ return -ENOSYS;
+
+ reply->reply_state = oncrpc_iob_get_int ( io_buf );
+
+ if ( reply->reply_state == 0 )
+ {
+ /* verifier.flavor */
+ oncrpc_iob_get_int ( io_buf );
+ /* verifier.length */
+ iob_pull ( io_buf, oncrpc_iob_get_int ( io_buf ));
+
+ /* We don't use the verifier in iPXE, let it be an empty
+ verifier. */
+ reply->verifier = &oncrpc_auth_none;
+ }
+
+ reply->accept_state = oncrpc_iob_get_int ( io_buf );
+ reply->data = io_buf;
+
+ return 0;
+}
Code Review / kvmfornfv.git / blobdiff