| // SPDX-License-Identifier: GPL-2.0-or-later |
| /* |
| * Copyright (C) 2016 Namjae Jeon <linkinjeon@kernel.org> |
| * Copyright (C) 2018 Samsung Electronics Co., Ltd. |
| */ |
| |
| #include <linux/slab.h> |
| #include "glob.h" |
| #include "smb2pdu.h" |
| |
| #include "auth.h" |
| #include "connection.h" |
| #include "smb_common.h" |
| #include "server.h" |
| |
| static struct smb_version_values smb21_server_values = { |
| .version_string = SMB21_VERSION_STRING, |
| .protocol_id = SMB21_PROT_ID, |
| .capabilities = SMB2_GLOBAL_CAP_LARGE_MTU, |
| .max_read_size = SMB21_DEFAULT_IOSIZE, |
| .max_write_size = SMB21_DEFAULT_IOSIZE, |
| .max_trans_size = SMB21_DEFAULT_IOSIZE, |
| .large_lock_type = 0, |
| .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE, |
| .shared_lock_type = SMB2_LOCKFLAG_SHARED, |
| .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK, |
| .header_size = sizeof(struct smb2_hdr), |
| .max_header_size = MAX_SMB2_HDR_SIZE, |
| .read_rsp_size = sizeof(struct smb2_read_rsp) - 1, |
| .lock_cmd = SMB2_LOCK, |
| .cap_unix = 0, |
| .cap_nt_find = SMB2_NT_FIND, |
| .cap_large_files = SMB2_LARGE_FILES, |
| .create_lease_size = sizeof(struct create_lease), |
| .create_durable_size = sizeof(struct create_durable_rsp), |
| .create_mxac_size = sizeof(struct create_mxac_rsp), |
| .create_disk_id_size = sizeof(struct create_disk_id_rsp), |
| .create_posix_size = sizeof(struct create_posix_rsp), |
| }; |
| |
| static struct smb_version_values smb30_server_values = { |
| .version_string = SMB30_VERSION_STRING, |
| .protocol_id = SMB30_PROT_ID, |
| .capabilities = SMB2_GLOBAL_CAP_LARGE_MTU, |
| .max_read_size = SMB3_DEFAULT_IOSIZE, |
| .max_write_size = SMB3_DEFAULT_IOSIZE, |
| .max_trans_size = SMB3_DEFAULT_TRANS_SIZE, |
| .large_lock_type = 0, |
| .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE, |
| .shared_lock_type = SMB2_LOCKFLAG_SHARED, |
| .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK, |
| .header_size = sizeof(struct smb2_hdr), |
| .max_header_size = MAX_SMB2_HDR_SIZE, |
| .read_rsp_size = sizeof(struct smb2_read_rsp) - 1, |
| .lock_cmd = SMB2_LOCK, |
| .cap_unix = 0, |
| .cap_nt_find = SMB2_NT_FIND, |
| .cap_large_files = SMB2_LARGE_FILES, |
| .create_lease_size = sizeof(struct create_lease_v2), |
| .create_durable_size = sizeof(struct create_durable_rsp), |
| .create_durable_v2_size = sizeof(struct create_durable_v2_rsp), |
| .create_mxac_size = sizeof(struct create_mxac_rsp), |
| .create_disk_id_size = sizeof(struct create_disk_id_rsp), |
| .create_posix_size = sizeof(struct create_posix_rsp), |
| }; |
| |
| static struct smb_version_values smb302_server_values = { |
| .version_string = SMB302_VERSION_STRING, |
| .protocol_id = SMB302_PROT_ID, |
| .capabilities = SMB2_GLOBAL_CAP_LARGE_MTU, |
| .max_read_size = SMB3_DEFAULT_IOSIZE, |
| .max_write_size = SMB3_DEFAULT_IOSIZE, |
| .max_trans_size = SMB3_DEFAULT_TRANS_SIZE, |
| .large_lock_type = 0, |
| .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE, |
| .shared_lock_type = SMB2_LOCKFLAG_SHARED, |
| .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK, |
| .header_size = sizeof(struct smb2_hdr), |
| .max_header_size = MAX_SMB2_HDR_SIZE, |
| .read_rsp_size = sizeof(struct smb2_read_rsp) - 1, |
| .lock_cmd = SMB2_LOCK, |
| .cap_unix = 0, |
| .cap_nt_find = SMB2_NT_FIND, |
| .cap_large_files = SMB2_LARGE_FILES, |
| .create_lease_size = sizeof(struct create_lease_v2), |
| .create_durable_size = sizeof(struct create_durable_rsp), |
| .create_durable_v2_size = sizeof(struct create_durable_v2_rsp), |
| .create_mxac_size = sizeof(struct create_mxac_rsp), |
| .create_disk_id_size = sizeof(struct create_disk_id_rsp), |
| .create_posix_size = sizeof(struct create_posix_rsp), |
| }; |
| |
| static struct smb_version_values smb311_server_values = { |
| .version_string = SMB311_VERSION_STRING, |
| .protocol_id = SMB311_PROT_ID, |
| .capabilities = SMB2_GLOBAL_CAP_LARGE_MTU, |
| .max_read_size = SMB3_DEFAULT_IOSIZE, |
| .max_write_size = SMB3_DEFAULT_IOSIZE, |
| .max_trans_size = SMB3_DEFAULT_TRANS_SIZE, |
| .large_lock_type = 0, |
| .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE, |
| .shared_lock_type = SMB2_LOCKFLAG_SHARED, |
| .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK, |
| .header_size = sizeof(struct smb2_hdr), |
| .max_header_size = MAX_SMB2_HDR_SIZE, |
| .read_rsp_size = sizeof(struct smb2_read_rsp) - 1, |
| .lock_cmd = SMB2_LOCK, |
| .cap_unix = 0, |
| .cap_nt_find = SMB2_NT_FIND, |
| .cap_large_files = SMB2_LARGE_FILES, |
| .create_lease_size = sizeof(struct create_lease_v2), |
| .create_durable_size = sizeof(struct create_durable_rsp), |
| .create_durable_v2_size = sizeof(struct create_durable_v2_rsp), |
| .create_mxac_size = sizeof(struct create_mxac_rsp), |
| .create_disk_id_size = sizeof(struct create_disk_id_rsp), |
| .create_posix_size = sizeof(struct create_posix_rsp), |
| }; |
| |
| static struct smb_version_ops smb2_0_server_ops = { |
| .get_cmd_val = get_smb2_cmd_val, |
| .init_rsp_hdr = init_smb2_rsp_hdr, |
| .set_rsp_status = set_smb2_rsp_status, |
| .allocate_rsp_buf = smb2_allocate_rsp_buf, |
| .set_rsp_credits = smb2_set_rsp_credits, |
| .check_user_session = smb2_check_user_session, |
| .get_ksmbd_tcon = smb2_get_ksmbd_tcon, |
| .is_sign_req = smb2_is_sign_req, |
| .check_sign_req = smb2_check_sign_req, |
| .set_sign_rsp = smb2_set_sign_rsp |
| }; |
| |
| static struct smb_version_ops smb3_0_server_ops = { |
| .get_cmd_val = get_smb2_cmd_val, |
| .init_rsp_hdr = init_smb2_rsp_hdr, |
| .set_rsp_status = set_smb2_rsp_status, |
| .allocate_rsp_buf = smb2_allocate_rsp_buf, |
| .set_rsp_credits = smb2_set_rsp_credits, |
| .check_user_session = smb2_check_user_session, |
| .get_ksmbd_tcon = smb2_get_ksmbd_tcon, |
| .is_sign_req = smb2_is_sign_req, |
| .check_sign_req = smb3_check_sign_req, |
| .set_sign_rsp = smb3_set_sign_rsp, |
| .generate_signingkey = ksmbd_gen_smb30_signingkey, |
| .generate_encryptionkey = ksmbd_gen_smb30_encryptionkey, |
| .is_transform_hdr = smb3_is_transform_hdr, |
| .decrypt_req = smb3_decrypt_req, |
| .encrypt_resp = smb3_encrypt_resp |
| }; |
| |
| static struct smb_version_ops smb3_11_server_ops = { |
| .get_cmd_val = get_smb2_cmd_val, |
| .init_rsp_hdr = init_smb2_rsp_hdr, |
| .set_rsp_status = set_smb2_rsp_status, |
| .allocate_rsp_buf = smb2_allocate_rsp_buf, |
| .set_rsp_credits = smb2_set_rsp_credits, |
| .check_user_session = smb2_check_user_session, |
| .get_ksmbd_tcon = smb2_get_ksmbd_tcon, |
| .is_sign_req = smb2_is_sign_req, |
| .check_sign_req = smb3_check_sign_req, |
| .set_sign_rsp = smb3_set_sign_rsp, |
| .generate_signingkey = ksmbd_gen_smb311_signingkey, |
| .generate_encryptionkey = ksmbd_gen_smb311_encryptionkey, |
| .is_transform_hdr = smb3_is_transform_hdr, |
| .decrypt_req = smb3_decrypt_req, |
| .encrypt_resp = smb3_encrypt_resp |
| }; |
| |
| static struct smb_version_cmds smb2_0_server_cmds[NUMBER_OF_SMB2_COMMANDS] = { |
| [SMB2_NEGOTIATE_HE] = { .proc = smb2_negotiate_request, }, |
| [SMB2_SESSION_SETUP_HE] = { .proc = smb2_sess_setup, }, |
| [SMB2_TREE_CONNECT_HE] = { .proc = smb2_tree_connect,}, |
| [SMB2_TREE_DISCONNECT_HE] = { .proc = smb2_tree_disconnect,}, |
| [SMB2_LOGOFF_HE] = { .proc = smb2_session_logoff,}, |
| [SMB2_CREATE_HE] = { .proc = smb2_open}, |
| [SMB2_QUERY_INFO_HE] = { .proc = smb2_query_info}, |
| [SMB2_QUERY_DIRECTORY_HE] = { .proc = smb2_query_dir}, |
| [SMB2_CLOSE_HE] = { .proc = smb2_close}, |
| [SMB2_ECHO_HE] = { .proc = smb2_echo}, |
| [SMB2_SET_INFO_HE] = { .proc = smb2_set_info}, |
| [SMB2_READ_HE] = { .proc = smb2_read}, |
| [SMB2_WRITE_HE] = { .proc = smb2_write}, |
| [SMB2_FLUSH_HE] = { .proc = smb2_flush}, |
| [SMB2_CANCEL_HE] = { .proc = smb2_cancel}, |
| [SMB2_LOCK_HE] = { .proc = smb2_lock}, |
| [SMB2_IOCTL_HE] = { .proc = smb2_ioctl}, |
| [SMB2_OPLOCK_BREAK_HE] = { .proc = smb2_oplock_break}, |
| [SMB2_CHANGE_NOTIFY_HE] = { .proc = smb2_notify}, |
| }; |
| |
| /** |
| * init_smb2_1_server() - initialize a smb server connection with smb2.1 |
| * command dispatcher |
| * @conn: connection instance |
| */ |
| void init_smb2_1_server(struct ksmbd_conn *conn) |
| { |
| conn->vals = &smb21_server_values; |
| conn->ops = &smb2_0_server_ops; |
| conn->cmds = smb2_0_server_cmds; |
| conn->max_cmds = ARRAY_SIZE(smb2_0_server_cmds); |
| conn->max_credits = SMB2_MAX_CREDITS; |
| conn->signing_algorithm = SIGNING_ALG_HMAC_SHA256; |
| |
| if (server_conf.flags & KSMBD_GLOBAL_FLAG_SMB2_LEASES) |
| conn->vals->capabilities |= SMB2_GLOBAL_CAP_LEASING; |
| } |
| |
| /** |
| * init_smb3_0_server() - initialize a smb server connection with smb3.0 |
| * command dispatcher |
| * @conn: connection instance |
| */ |
| void init_smb3_0_server(struct ksmbd_conn *conn) |
| { |
| conn->vals = &smb30_server_values; |
| conn->ops = &smb3_0_server_ops; |
| conn->cmds = smb2_0_server_cmds; |
| conn->max_cmds = ARRAY_SIZE(smb2_0_server_cmds); |
| conn->max_credits = SMB2_MAX_CREDITS; |
| conn->signing_algorithm = SIGNING_ALG_AES_CMAC; |
| |
| if (server_conf.flags & KSMBD_GLOBAL_FLAG_SMB2_LEASES) |
| conn->vals->capabilities |= SMB2_GLOBAL_CAP_LEASING; |
| |
| if (server_conf.flags & KSMBD_GLOBAL_FLAG_SMB2_ENCRYPTION && |
| conn->cli_cap & SMB2_GLOBAL_CAP_ENCRYPTION) |
| conn->vals->capabilities |= SMB2_GLOBAL_CAP_ENCRYPTION; |
| |
| if (server_conf.flags & KSMBD_GLOBAL_FLAG_SMB3_MULTICHANNEL) |
| conn->vals->capabilities |= SMB2_GLOBAL_CAP_MULTI_CHANNEL; |
| } |
| |
| /** |
| * init_smb3_02_server() - initialize a smb server connection with smb3.02 |
| * command dispatcher |
| * @conn: connection instance |
| */ |
| void init_smb3_02_server(struct ksmbd_conn *conn) |
| { |
| conn->vals = &smb302_server_values; |
| conn->ops = &smb3_0_server_ops; |
| conn->cmds = smb2_0_server_cmds; |
| conn->max_cmds = ARRAY_SIZE(smb2_0_server_cmds); |
| conn->max_credits = SMB2_MAX_CREDITS; |
| conn->signing_algorithm = SIGNING_ALG_AES_CMAC; |
| |
| if (server_conf.flags & KSMBD_GLOBAL_FLAG_SMB2_LEASES) |
| conn->vals->capabilities |= SMB2_GLOBAL_CAP_LEASING; |
| |
| if (server_conf.flags & KSMBD_GLOBAL_FLAG_SMB2_ENCRYPTION && |
| conn->cli_cap & SMB2_GLOBAL_CAP_ENCRYPTION) |
| conn->vals->capabilities |= SMB2_GLOBAL_CAP_ENCRYPTION; |
| |
| if (server_conf.flags & KSMBD_GLOBAL_FLAG_SMB3_MULTICHANNEL) |
| conn->vals->capabilities |= SMB2_GLOBAL_CAP_MULTI_CHANNEL; |
| } |
| |
| /** |
| * init_smb3_11_server() - initialize a smb server connection with smb3.11 |
| * command dispatcher |
| * @conn: connection instance |
| */ |
| int init_smb3_11_server(struct ksmbd_conn *conn) |
| { |
| conn->vals = &smb311_server_values; |
| conn->ops = &smb3_11_server_ops; |
| conn->cmds = smb2_0_server_cmds; |
| conn->max_cmds = ARRAY_SIZE(smb2_0_server_cmds); |
| conn->max_credits = SMB2_MAX_CREDITS; |
| conn->signing_algorithm = SIGNING_ALG_AES_CMAC; |
| |
| if (server_conf.flags & KSMBD_GLOBAL_FLAG_SMB2_LEASES) |
| conn->vals->capabilities |= SMB2_GLOBAL_CAP_LEASING; |
| |
| if (conn->cipher_type) |
| conn->vals->capabilities |= SMB2_GLOBAL_CAP_ENCRYPTION; |
| |
| if (server_conf.flags & KSMBD_GLOBAL_FLAG_SMB3_MULTICHANNEL) |
| conn->vals->capabilities |= SMB2_GLOBAL_CAP_MULTI_CHANNEL; |
| |
| INIT_LIST_HEAD(&conn->preauth_sess_table); |
| return 0; |
| } |
| |
| void init_smb2_max_read_size(unsigned int sz) |
| { |
| smb21_server_values.max_read_size = sz; |
| smb30_server_values.max_read_size = sz; |
| smb302_server_values.max_read_size = sz; |
| smb311_server_values.max_read_size = sz; |
| } |
| |
| void init_smb2_max_write_size(unsigned int sz) |
| { |
| smb21_server_values.max_write_size = sz; |
| smb30_server_values.max_write_size = sz; |
| smb302_server_values.max_write_size = sz; |
| smb311_server_values.max_write_size = sz; |
| } |
| |
| void init_smb2_max_trans_size(unsigned int sz) |
| { |
| smb21_server_values.max_trans_size = sz; |
| smb30_server_values.max_trans_size = sz; |
| smb302_server_values.max_trans_size = sz; |
| smb311_server_values.max_trans_size = sz; |
| } |
