/* * Unix SMB/CIFS implementation. * Helper routines for net * Copyright (C) Volker Lendecke 2006 * * 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 3 of the License, or * (at your option) 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, see . */ #include "includes.h" #include "utils/net.h" NTSTATUS net_rpc_lookup_name(struct net_context *c, TALLOC_CTX *mem_ctx, struct cli_state *cli, const char *name, const char **ret_domain, const char **ret_name, DOM_SID *ret_sid, enum lsa_SidType *ret_type) { struct rpc_pipe_client *lsa_pipe; POLICY_HND pol; NTSTATUS result = NT_STATUS_OK; const char **dom_names; DOM_SID *sids; enum lsa_SidType *types; ZERO_STRUCT(pol); lsa_pipe = cli_rpc_pipe_open_noauth(cli, PI_LSARPC, &result); if (lsa_pipe == NULL) { d_fprintf(stderr, "Could not initialise lsa pipe\n"); return result; } result = rpccli_lsa_open_policy(lsa_pipe, mem_ctx, false, SEC_RIGHTS_MAXIMUM_ALLOWED, &pol); if (!NT_STATUS_IS_OK(result)) { d_fprintf(stderr, "open_policy failed: %s\n", nt_errstr(result)); return result; } result = rpccli_lsa_lookup_names(lsa_pipe, mem_ctx, &pol, 1, &name, &dom_names, 1, &sids, &types); if (!NT_STATUS_IS_OK(result)) { /* This can happen easily, don't log an error */ goto done; } if (ret_domain != NULL) { *ret_domain = dom_names[0]; } if (ret_name != NULL) { *ret_name = talloc_strdup(mem_ctx, name); } if (ret_sid != NULL) { sid_copy(ret_sid, &sids[0]); } if (ret_type != NULL) { *ret_type = types[0]; } done: if (is_valid_policy_hnd(&pol)) { rpccli_lsa_Close(lsa_pipe, mem_ctx, &pol); } TALLOC_FREE(lsa_pipe); return result; } /**************************************************************************** Connect to \\server\service. ****************************************************************************/ NTSTATUS connect_to_service(struct net_context *c, struct cli_state **cli_ctx, struct sockaddr_storage *server_ss, const char *server_name, const char *service_name, const char *service_type) { NTSTATUS nt_status; c->opt_password = net_prompt_pass(c, c->opt_user_name); if (!c->opt_password) { return NT_STATUS_NO_MEMORY; } nt_status = cli_full_connection(cli_ctx, NULL, server_name, server_ss, c->opt_port, service_name, service_type, c->opt_user_name, c->opt_workgroup, c->opt_password, 0, Undefined, NULL); if (!NT_STATUS_IS_OK(nt_status)) { d_fprintf(stderr, "Could not connect to server %s\n", server_name); /* Display a nicer message depending on the result */ if (NT_STATUS_V(nt_status) == NT_STATUS_V(NT_STATUS_LOGON_FAILURE)) d_fprintf(stderr, "The username or password was not correct.\n"); if (NT_STATUS_V(nt_status) == NT_STATUS_V(NT_STATUS_ACCOUNT_LOCKED_OUT)) d_fprintf(stderr, "The account was locked out.\n"); if (NT_STATUS_V(nt_status) == NT_STATUS_V(NT_STATUS_ACCOUNT_DISABLED)) d_fprintf(stderr, "The account was disabled.\n"); return nt_status; } if (c->smb_encrypt) { nt_status = cli_force_encryption(*cli_ctx, c->opt_user_name, c->opt_password, c->opt_workgroup); if (NT_STATUS_EQUAL(nt_status,NT_STATUS_NOT_SUPPORTED)) { d_printf("Encryption required and " "server that doesn't support " "UNIX extensions - failing connect\n"); } else if (NT_STATUS_EQUAL(nt_status,NT_STATUS_UNKNOWN_REVISION)) { d_printf("Encryption required and " "can't get UNIX CIFS extensions " "version from server.\n"); } else if (NT_STATUS_EQUAL(nt_status,NT_STATUS_UNSUPPORTED_COMPRESSION)) { d_printf("Encryption required and " "share %s doesn't support " "encryption.\n", service_name); } else if (!NT_STATUS_IS_OK(nt_status)) { d_printf("Encryption required and " "setup failed with error %s.\n", nt_errstr(nt_status)); } if (!NT_STATUS_IS_OK(nt_status)) { cli_shutdown(*cli_ctx); *cli_ctx = NULL; } } return nt_status; } /**************************************************************************** Connect to \\server\ipc$. ****************************************************************************/ NTSTATUS connect_to_ipc(struct net_context *c, struct cli_state **cli_ctx, struct sockaddr_storage *server_ss, const char *server_name) { return connect_to_service(c, cli_ctx, server_ss, server_name, "IPC$", "IPC"); } /**************************************************************************** Connect to \\server\ipc$ anonymously. ****************************************************************************/ NTSTATUS connect_to_ipc_anonymous(struct net_context *c, struct cli_state **cli_ctx, struct sockaddr_storage *server_ss, const char *server_name) { NTSTATUS nt_status; nt_status = cli_full_connection(cli_ctx, c->opt_requester_name, server_name, server_ss, c->opt_port, "IPC$", "IPC", "", "", "", 0, Undefined, NULL); if (NT_STATUS_IS_OK(nt_status)) { return nt_status; } else { DEBUG(1,("Cannot connect to server (anonymously). Error was %s\n", nt_errstr(nt_status))); return nt_status; } } /**************************************************************************** Return malloced user@realm for krb5 login. ****************************************************************************/ static char *get_user_and_realm(const char *username) { char *user_and_realm = NULL; if (!username) { return NULL; } if (strchr_m(username, '@')) { user_and_realm = SMB_STRDUP(username); } else { if (asprintf(&user_and_realm, "%s@%s", username, lp_realm()) == -1) { user_and_realm = NULL; } } return user_and_realm; } /**************************************************************************** Connect to \\server\ipc$ using KRB5. ****************************************************************************/ NTSTATUS connect_to_ipc_krb5(struct net_context *c, struct cli_state **cli_ctx, struct sockaddr_storage *server_ss, const char *server_name) { NTSTATUS nt_status; char *user_and_realm = NULL; /* FIXME: Should get existing kerberos ticket if possible. */ c->opt_password = net_prompt_pass(c, c->opt_user_name); if (!c->opt_password) { return NT_STATUS_NO_MEMORY; } user_and_realm = get_user_and_realm(c->opt_user_name); if (!user_and_realm) { return NT_STATUS_NO_MEMORY; } nt_status = cli_full_connection(cli_ctx, NULL, server_name, server_ss, c->opt_port, "IPC$", "IPC", user_and_realm, c->opt_workgroup, c->opt_password, CLI_FULL_CONNECTION_USE_KERBEROS, Undefined, NULL); SAFE_FREE(user_and_realm); if (!NT_STATUS_IS_OK(nt_status)) { DEBUG(1,("Cannot connect to server using kerberos. Error was %s\n", nt_errstr(nt_status))); return nt_status; } if (c->smb_encrypt) { nt_status = cli_cm_force_encryption(*cli_ctx, user_and_realm, c->opt_password, c->opt_workgroup, "IPC$"); if (!NT_STATUS_IS_OK(nt_status)) { cli_shutdown(*cli_ctx); *cli_ctx = NULL; } } return nt_status; } /** * Connect a server and open a given pipe * * @param cli_dst A cli_state * @param pipe The pipe to open * @param got_pipe boolean that stores if we got a pipe * * @return Normal NTSTATUS return. **/ NTSTATUS connect_dst_pipe(struct net_context *c, struct cli_state **cli_dst, struct rpc_pipe_client **pp_pipe_hnd, int pipe_num) { NTSTATUS nt_status; char *server_name = SMB_STRDUP("127.0.0.1"); struct cli_state *cli_tmp = NULL; struct rpc_pipe_client *pipe_hnd = NULL; if (server_name == NULL) { return NT_STATUS_NO_MEMORY; } if (c->opt_destination) { SAFE_FREE(server_name); if ((server_name = SMB_STRDUP(c->opt_destination)) == NULL) { return NT_STATUS_NO_MEMORY; } } /* make a connection to a named pipe */ nt_status = connect_to_ipc(c, &cli_tmp, NULL, server_name); if (!NT_STATUS_IS_OK(nt_status)) { SAFE_FREE(server_name); return nt_status; } pipe_hnd = cli_rpc_pipe_open_noauth(cli_tmp, pipe_num, &nt_status); if (!pipe_hnd) { DEBUG(0, ("couldn't not initialize pipe\n")); cli_shutdown(cli_tmp); SAFE_FREE(server_name); return nt_status; } *cli_dst = cli_tmp; *pp_pipe_hnd = pipe_hnd; SAFE_FREE(server_name); return nt_status; } /**************************************************************************** Use the local machine account (krb) and password for this session. ****************************************************************************/ int net_use_krb_machine_account(struct net_context *c) { char *user_name = NULL; if (!secrets_init()) { d_fprintf(stderr, "ERROR: Unable to open secrets database\n"); exit(1); } c->opt_password = secrets_fetch_machine_password( c->opt_target_workgroup, NULL, NULL); if (asprintf(&user_name, "%s$@%s", global_myname(), lp_realm()) == -1) { return -1; } c->opt_user_name = user_name; return 0; } /**************************************************************************** Use the machine account name and password for this session. ****************************************************************************/ int net_use_machine_account(struct net_context *c) { char *user_name = NULL; if (!secrets_init()) { d_fprintf(stderr, "ERROR: Unable to open secrets database\n"); exit(1); } c->opt_password = secrets_fetch_machine_password( c->opt_target_workgroup, NULL, NULL); if (asprintf(&user_name, "%s$", global_myname()) == -1) { return -1; } c->opt_user_name = user_name; return 0; } bool net_find_server(struct net_context *c, const char *domain, unsigned flags, struct sockaddr_storage *server_ss, char **server_name) { const char *d = domain ? domain : c->opt_target_workgroup; if (c->opt_host) { *server_name = SMB_STRDUP(c->opt_host); } if (c->opt_have_ip) { *server_ss = c->opt_dest_ip; if (!*server_name) { char addr[INET6_ADDRSTRLEN]; print_sockaddr(addr, sizeof(addr), &c->opt_dest_ip); *server_name = SMB_STRDUP(addr); } } else if (*server_name) { /* resolve the IP address */ if (!resolve_name(*server_name, server_ss, 0x20)) { DEBUG(1,("Unable to resolve server name\n")); return false; } } else if (flags & NET_FLAGS_PDC) { fstring dc_name; struct sockaddr_storage pdc_ss; if (!get_pdc_ip(d, &pdc_ss)) { DEBUG(1,("Unable to resolve PDC server address\n")); return false; } if (is_zero_addr(&pdc_ss)) { return false; } if (!name_status_find(d, 0x1b, 0x20, &pdc_ss, dc_name)) { return false; } *server_name = SMB_STRDUP(dc_name); *server_ss = pdc_ss; } else if (flags & NET_FLAGS_DMB) { struct sockaddr_storage msbrow_ss; char addr[INET6_ADDRSTRLEN]; /* if (!resolve_name(MSBROWSE, &msbrow_ip, 1)) */ if (!resolve_name(d, &msbrow_ss, 0x1B)) { DEBUG(1,("Unable to resolve domain browser via name lookup\n")); return false; } *server_ss = msbrow_ss; print_sockaddr(addr, sizeof(addr), server_ss); *server_name = SMB_STRDUP(addr); } else if (flags & NET_FLAGS_MASTER) { struct sockaddr_storage brow_ss; char addr[INET6_ADDRSTRLEN]; if (!resolve_name(d, &brow_ss, 0x1D)) { /* go looking for workgroups */ DEBUG(1,("Unable to resolve master browser via name lookup\n")); return false; } *server_ss = brow_ss; print_sockaddr(addr, sizeof(addr), server_ss); *server_name = SMB_STRDUP(addr); } else if (!(flags & NET_FLAGS_LOCALHOST_DEFAULT_INSANE)) { if (!interpret_string_addr(server_ss, "127.0.0.1", AI_NUMERICHOST)) { DEBUG(1,("Unable to resolve 127.0.0.1\n")); return false; } *server_name = SMB_STRDUP("127.0.0.1"); } if (!*server_name) { DEBUG(1,("no server to connect to\n")); return false; } return true; } bool net_find_pdc(struct sockaddr_storage *server_ss, fstring server_name, const char *domain_name) { if (!get_pdc_ip(domain_name, server_ss)) { return false; } if (is_zero_addr(server_ss)) { return false; } if (!name_status_find(domain_name, 0x1b, 0x20, server_ss, server_name)) { return false; } return true; } NTSTATUS net_make_ipc_connection(struct net_context *c, unsigned flags, struct cli_state **pcli) { return net_make_ipc_connection_ex(c, NULL, NULL, NULL, flags, pcli); } NTSTATUS net_make_ipc_connection_ex(struct net_context *c ,const char *domain, const char *server, struct sockaddr_storage *pss, unsigned flags, struct cli_state **pcli) { char *server_name = NULL; struct sockaddr_storage server_ss; struct cli_state *cli = NULL; NTSTATUS nt_status; if ( !server || !pss ) { if (!net_find_server(c, domain, flags, &server_ss, &server_name)) { d_fprintf(stderr, "Unable to find a suitable server\n"); nt_status = NT_STATUS_UNSUCCESSFUL; goto done; } } else { server_name = SMB_STRDUP( server ); server_ss = *pss; } if (flags & NET_FLAGS_ANONYMOUS) { nt_status = connect_to_ipc_anonymous(c, &cli, &server_ss, server_name); } else { nt_status = connect_to_ipc(c, &cli, &server_ss, server_name); } /* store the server in the affinity cache if it was a PDC */ if ( (flags & NET_FLAGS_PDC) && NT_STATUS_IS_OK(nt_status) ) saf_store( cli->server_domain, cli->desthost ); SAFE_FREE(server_name); if (!NT_STATUS_IS_OK(nt_status)) { d_fprintf(stderr, "Connection failed: %s\n", nt_errstr(nt_status)); cli = NULL; } done: if (pcli != NULL) { *pcli = cli; } return nt_status; } /**************************************************************************** ****************************************************************************/ const char *net_prompt_pass(struct net_context *c, const char *user) { char *prompt = NULL; const char *pass = NULL; if (c->opt_password) { return c->opt_password; } if (c->opt_machine_pass) { return NULL; } asprintf(&prompt, "Enter %s's password:", user); if (!prompt) { return NULL; } pass = getpass(prompt); SAFE_FREE(prompt); return pass; }