static void manage_gensec_request(enum stdio_helper_mode stdio_helper_mode, struct loadparm_context *lp_ctx, char *buf, int length, void **private1, unsigned int mux_id, void **private2) { DATA_BLOB in; DATA_BLOB out = data_blob(NULL, 0); char *out_base64 = NULL; const char *reply_arg = NULL; struct gensec_ntlm_state { struct gensec_security *gensec_state; const char *set_password; }; struct gensec_ntlm_state *state; struct tevent_context *ev; struct imessaging_context *msg; NTSTATUS nt_status; bool first = false; const char *reply_code; struct cli_credentials *creds; static char *want_feature_list = NULL; static DATA_BLOB session_key; TALLOC_CTX *mem_ctx; if (*private1) { state = (struct gensec_ntlm_state *)*private1; } else { state = talloc_zero(NULL, struct gensec_ntlm_state); if (!state) { mux_printf(mux_id, "BH No Memory\n"); exit(1); } *private1 = state; if (opt_password) { state->set_password = opt_password; } } if (strlen(buf) < 2) { DEBUG(1, ("query [%s] invalid", buf)); mux_printf(mux_id, "BH Query invalid\n"); return; } if (strlen(buf) > 3) { if(strncmp(buf, "SF ", 3) == 0) { DEBUG(10, ("Setting flags to negotiate\n")); talloc_free(want_feature_list); want_feature_list = talloc_strndup(state, buf+3, strlen(buf)-3); mux_printf(mux_id, "OK\n"); return; } in = base64_decode_data_blob(buf + 3); } else { in = data_blob(NULL, 0); } if (strncmp(buf, "YR", 2) == 0) { if (state->gensec_state) { talloc_free(state->gensec_state); state->gensec_state = NULL; } } else if ( (strncmp(buf, "OK", 2) == 0)) { /* Just return BH, like ntlm_auth from Samba 3 does. */ mux_printf(mux_id, "BH Command expected\n"); data_blob_free(&in); return; } else if ( (strncmp(buf, "TT ", 3) != 0) && (strncmp(buf, "KK ", 3) != 0) && (strncmp(buf, "AF ", 3) != 0) && (strncmp(buf, "NA ", 3) != 0) && (strncmp(buf, "UG", 2) != 0) && (strncmp(buf, "PW ", 3) != 0) && (strncmp(buf, "GK", 2) != 0) && (strncmp(buf, "GF", 2) != 0)) { DEBUG(1, ("SPNEGO request [%s] invalid\n", buf)); mux_printf(mux_id, "BH SPNEGO request invalid\n"); data_blob_free(&in); return; } ev = s4_event_context_init(state); if (!ev) { exit(1); } mem_ctx = talloc_named(NULL, 0, "manage_gensec_request internal mem_ctx"); /* setup gensec */ if (!(state->gensec_state)) { switch (stdio_helper_mode) { case GSS_SPNEGO_CLIENT: case NTLMSSP_CLIENT_1: /* setup the client side */ nt_status = gensec_client_start(NULL, &state->gensec_state, ev, lpcfg_gensec_settings(NULL, lp_ctx)); if (!NT_STATUS_IS_OK(nt_status)) { talloc_free(mem_ctx); exit(1); } break; case GSS_SPNEGO_SERVER: case SQUID_2_5_NTLMSSP: { const char *winbind_method[] = { "winbind", NULL }; struct auth4_context *auth_context; msg = imessaging_client_init(state, lpcfg_imessaging_path(state, lp_ctx), ev); if (!msg) { talloc_free(mem_ctx); exit(1); } nt_status = auth_context_create_methods(mem_ctx, winbind_method, ev, msg, lp_ctx, NULL, &auth_context); if (!NT_STATUS_IS_OK(nt_status)) { talloc_free(mem_ctx); exit(1); } if (!NT_STATUS_IS_OK(gensec_server_start(state, ev, lpcfg_gensec_settings(state, lp_ctx), auth_context, &state->gensec_state))) { talloc_free(mem_ctx); exit(1); } break; } default: talloc_free(mem_ctx); abort(); } creds = cli_credentials_init(state->gensec_state); cli_credentials_set_conf(creds, lp_ctx); if (opt_username) { cli_credentials_set_username(creds, opt_username, CRED_SPECIFIED); } if (opt_domain) { cli_credentials_set_domain(creds, opt_domain, CRED_SPECIFIED); } if (state->set_password) { cli_credentials_set_password(creds, state->set_password, CRED_SPECIFIED); } else { cli_credentials_set_password_callback(creds, get_password); creds->priv_data = (void*)(uintptr_t)mux_id; } if (opt_workstation) { cli_credentials_set_workstation(creds, opt_workstation, CRED_SPECIFIED); } switch (stdio_helper_mode) { case GSS_SPNEGO_SERVER: case SQUID_2_5_NTLMSSP: cli_credentials_set_machine_account(creds, lp_ctx); break; default: break; } gensec_set_credentials(state->gensec_state, creds); gensec_want_feature_list(state->gensec_state, want_feature_list); switch (stdio_helper_mode) { case GSS_SPNEGO_CLIENT: case GSS_SPNEGO_SERVER: nt_status = gensec_start_mech_by_oid(state->gensec_state, GENSEC_OID_SPNEGO); if (!in.length) { first = true; } break; case NTLMSSP_CLIENT_1: if (!in.length) { first = true; } /* fall through */ case SQUID_2_5_NTLMSSP: nt_status = gensec_start_mech_by_oid(state->gensec_state, GENSEC_OID_NTLMSSP); break; default: talloc_free(mem_ctx); abort(); } if (!NT_STATUS_IS_OK(nt_status)) { DEBUG(1, ("GENSEC mech failed to start: %s\n", nt_errstr(nt_status))); mux_printf(mux_id, "BH GENSEC mech failed to start\n"); talloc_free(mem_ctx); return; } } /* update */ if (strncmp(buf, "PW ", 3) == 0) { state->set_password = talloc_strndup(state, (const char *)in.data, in.length); cli_credentials_set_password(gensec_get_credentials(state->gensec_state), state->set_password, CRED_SPECIFIED); mux_printf(mux_id, "OK\n"); data_blob_free(&in); talloc_free(mem_ctx); return; } if (strncmp(buf, "UG", 2) == 0) { int i; char *grouplist = NULL; struct auth_session_info *session_info; nt_status = gensec_session_info(state->gensec_state, mem_ctx, &session_info); if (!NT_STATUS_IS_OK(nt_status)) { DEBUG(1, ("gensec_session_info failed: %s\n", nt_errstr(nt_status))); mux_printf(mux_id, "BH %s\n", nt_errstr(nt_status)); data_blob_free(&in); talloc_free(mem_ctx); return; } /* get the string onto the context */ grouplist = talloc_strdup(mem_ctx, ""); for (i=0; i<session_info->security_token->num_sids; i++) { struct security_token *token = session_info->security_token; const char *sidstr = dom_sid_string(session_info, &token->sids[i]); grouplist = talloc_asprintf_append_buffer(grouplist, "%s,", sidstr); } mux_printf(mux_id, "GL %s\n", grouplist); talloc_free(session_info); data_blob_free(&in); talloc_free(mem_ctx); return; } if (strncmp(buf, "GK", 2) == 0) { char *base64_key; DEBUG(10, ("Requested session key\n")); nt_status = gensec_session_key(state->gensec_state, mem_ctx, &session_key); if(!NT_STATUS_IS_OK(nt_status)) { DEBUG(1, ("gensec_session_key failed: %s\n", nt_errstr(nt_status))); mux_printf(mux_id, "BH No session key\n"); talloc_free(mem_ctx); return; } else { base64_key = base64_encode_data_blob(state, session_key); mux_printf(mux_id, "GK %s\n", base64_key); talloc_free(base64_key); } talloc_free(mem_ctx); return; } if (strncmp(buf, "GF", 2) == 0) { struct ntlmssp_state *ntlmssp_state; uint32_t neg_flags; ntlmssp_state = talloc_get_type(state->gensec_state->private_data, struct ntlmssp_state); neg_flags = ntlmssp_state->neg_flags; DEBUG(10, ("Requested negotiated feature flags\n")); mux_printf(mux_id, "GF 0x%08x\n", neg_flags); return; } nt_status = gensec_update(state->gensec_state, mem_ctx, in, &out); /* don't leak 'bad password'/'no such user' info to the network client */ nt_status = nt_status_squash(nt_status); if (out.length) { out_base64 = base64_encode_data_blob(mem_ctx, out); } else { out_base64 = NULL; } if (NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) { reply_arg = "*"; if (first) { reply_code = "YR"; } else if (state->gensec_state->gensec_role == GENSEC_CLIENT) { reply_code = "KK"; } else if (state->gensec_state->gensec_role == GENSEC_SERVER) { reply_code = "TT"; } else { abort(); } } else if (NT_STATUS_EQUAL(nt_status, NT_STATUS_ACCESS_DENIED)) { reply_code = "BH NT_STATUS_ACCESS_DENIED"; reply_arg = nt_errstr(nt_status); DEBUG(1, ("GENSEC login failed: %s\n", nt_errstr(nt_status))); } else if (NT_STATUS_EQUAL(nt_status, NT_STATUS_UNSUCCESSFUL)) { reply_code = "BH NT_STATUS_UNSUCCESSFUL"; reply_arg = nt_errstr(nt_status); DEBUG(1, ("GENSEC login failed: %s\n", nt_errstr(nt_status))); } else if (!NT_STATUS_IS_OK(nt_status)) { reply_code = "NA"; reply_arg = nt_errstr(nt_status); DEBUG(1, ("GENSEC login failed: %s\n", nt_errstr(nt_status))); } else if /* OK */ (state->gensec_state->gensec_role == GENSEC_SERVER) { struct auth_session_info *session_info; nt_status = gensec_session_info(state->gensec_state, mem_ctx, &session_info); if (!NT_STATUS_IS_OK(nt_status)) { reply_code = "BH Failed to retrive session info"; reply_arg = nt_errstr(nt_status); DEBUG(1, ("GENSEC failed to retrieve the session info: %s\n", nt_errstr(nt_status))); } else { reply_code = "AF"; reply_arg = talloc_asprintf(state->gensec_state, "%s%s%s", session_info->info->domain_name, lpcfg_winbind_separator(lp_ctx), session_info->info->account_name); talloc_free(session_info); } } else if (state->gensec_state->gensec_role == GENSEC_CLIENT) { reply_code = "AF"; reply_arg = out_base64; } else { abort(); } switch (stdio_helper_mode) { case GSS_SPNEGO_SERVER: mux_printf(mux_id, "%s %s %s\n", reply_code, out_base64 ? out_base64 : "*", reply_arg ? reply_arg : "*"); break; default: if (out_base64) { mux_printf(mux_id, "%s %s\n", reply_code, out_base64); } else if (reply_arg) { mux_printf(mux_id, "%s %s\n", reply_code, reply_arg); } else { mux_printf(mux_id, "%s\n", reply_code); } } talloc_free(mem_ctx); return; }
/* * Hook to allow handling of NTLM authentication for AD operation * without directly linking the s4 auth stack * * This ensures we use the source4 authentication stack, as well as * the authorization stack to create the user's token. This ensures * consistency between NTLM logins and NTLMSSP logins, as NTLMSSP is * handled by the hook above. */ static NTSTATUS make_auth4_context_s4(const struct auth_context *auth_context, TALLOC_CTX *mem_ctx, struct auth4_context **auth4_context) { NTSTATUS status; struct loadparm_context *lp_ctx; struct tevent_context *event_ctx; TALLOC_CTX *frame = talloc_stackframe(); struct imessaging_context *msg_ctx; struct server_id *server_id; lp_ctx = loadparm_init_s3(frame, loadparm_s3_helpers()); if (lp_ctx == NULL) { DEBUG(1, ("loadparm_init_s3 failed\n")); TALLOC_FREE(frame); return NT_STATUS_INVALID_SERVER_STATE; } event_ctx = s4_event_context_init(frame); if (event_ctx == NULL) { DEBUG(1, ("s4_event_context_init failed\n")); TALLOC_FREE(frame); return NT_STATUS_INVALID_SERVER_STATE; } server_id = new_server_id_task(frame); if (server_id == NULL) { DEBUG(1, ("new_server_id_task failed\n")); TALLOC_FREE(frame); return NT_STATUS_INVALID_SERVER_STATE; } msg_ctx = imessaging_init(frame, lp_ctx, *server_id, event_ctx, true); if (msg_ctx == NULL) { DEBUG(1, ("imessaging_init failed\n")); TALLOC_FREE(frame); return NT_STATUS_INVALID_SERVER_STATE; } talloc_reparent(frame, msg_ctx, server_id); /* Allow forcing a specific auth4 module */ if (!auth_context->forced_samba4_methods) { status = auth_context_create(mem_ctx, event_ctx, msg_ctx, lp_ctx, auth4_context); } else { const char * const *forced_auth_methods = (const char * const *)str_list_make(mem_ctx, auth_context->forced_samba4_methods, NULL); status = auth_context_create_methods(mem_ctx, forced_auth_methods, event_ctx, msg_ctx, lp_ctx, NULL, auth4_context); } if (!NT_STATUS_IS_OK(status)) { DEBUG(1, ("Failed to start auth server code: %s\n", nt_errstr(status))); TALLOC_FREE(frame); return status; } talloc_reparent(frame, *auth4_context, msg_ctx); talloc_reparent(frame, *auth4_context, event_ctx); talloc_reparent(frame, *auth4_context, lp_ctx); TALLOC_FREE(frame); return status; }