s3-net: Add net trust utility

Signed-off-by: Günther Deschner <gd@samba.org>

5 files changed, 561 insertions, 0 deletions

diff --git a/source3/Makefile.in b/source3/Makefile.in
index f70eb63a70..0854114d43 100644
--- a/source3/Makefile.in
+++ b/source3/Makefile.in
@@ -1160,6 +1160,7 @@ NET_OBJ1 = utils/net.o utils/net_ads.o utils/net_help.o \
 	   utils/net_serverid.o \
 	   utils/net_eventlog.o \
 	   utils/net_printing.o \
+	   utils/net_rpc_trust.o \
 	   $(LIBNDR_NTPRINTING_OBJ) \
 	   $(LIBNDR_PREG_OBJ) \
 	   $(LIBCLI_SPOOLSS_OBJ) \
diff --git a/source3/utils/net_proto.h b/source3/utils/net_proto.h
index 7567b8c618..ba3860a88d 100644
--- a/source3/utils/net_proto.h
+++ b/source3/utils/net_proto.h
@@ -464,4 +464,7 @@ char *get_pass( const char *prompt, bool stdin_get);
 /* The following definitions come from utils/net_g_lock.c  */
 int net_g_lock(struct net_context *c, int argc, const char **argv);
 
+/* The following definitions come from utils/net_rpc_trust.c  */
+int net_rpc_trust(struct net_context *c, int argc, const char **argv);
+
 #endif /*  _NET_PROTO_H_  */
diff --git a/source3/utils/net_rpc.c b/source3/utils/net_rpc.c
index 2df33c618a..4003b88d51 100644
--- a/source3/utils/net_rpc.c
+++ b/source3/utils/net_rpc.c
@@ -7997,6 +7997,14 @@ int net_rpc(struct net_context *c, int argc, const char **argv)
 			N_("net rpc shell\n"
 			   "    Open interactive shell on remote server")
 		},
+		{
+			"trust",
+			net_rpc_trust,
+			NET_TRANSPORT_RPC,
+			N_("Manage trusts"),
+			N_("net rpc trust\n"
+			   "    Manage trusts")
+		},
 		{NULL, NULL, 0, NULL, NULL}
 	};
 
diff --git a/source3/utils/net_rpc_trust.c b/source3/utils/net_rpc_trust.c
new file mode 100644
index 0000000000..71aa6a39fc
--- /dev/null
+++ b/source3/utils/net_rpc_trust.c
@@ -0,0 +1,548 @@
+/*
+   Samba Unix/Linux SMB client library
+   Distributed SMB/CIFS Server Management Utility
+   Copyright (C) 2011 Sumit Bose (sbose@redhat.com)
+
+   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 <http://www.gnu.org/licenses/>.  */
+
+
+#include "includes.h"
+#include "utils/net.h"
+#include "rpc_client/cli_pipe.h"
+#include "rpc_client/cli_lsarpc.h"
+#include "librpc/gen_ndr/ndr_drsblobs.h"
+#include "../librpc/gen_ndr/ndr_lsa_c.h"
+#include "../lib/crypto/crypto.h"
+#include "../libcli/security/dom_sid.h"
+
+
+#define ARG_OTHERSERVER "otherserver="
+#define ARG_OTHERUSER "otheruser="
+#define ARG_OTHERDOMAINSID "otherdomainsid="
+#define ARG_OTHERDOMAIN "otherdomain="
+#define ARG_OTHERNETBIOSDOMAIN "other_netbios_domain="
+#define ARG_TRUSTPW "trustpw="
+
+struct other_dom_data {
+	char *host;
+	char *user_name;
+	char *domain_sid_str;
+	char *dns_domain_name;
+	char *domain_name;
+};
+
+struct dom_data {
+	struct dom_sid *domsid;
+	char *dns_domain_name;
+	char *domain_name;
+};
+
+static NTSTATUS close_handle(TALLOC_CTX *mem_ctx,
+			     struct dcerpc_binding_handle *bind_hnd,
+			     struct policy_handle *pol_hnd)
+{
+	NTSTATUS status;
+	NTSTATUS result;
+
+	status = dcerpc_lsa_Close(bind_hnd, mem_ctx, pol_hnd, &result);
+	if (!NT_STATUS_IS_OK(status)) {
+		DEBUG(0, ("dcerpc_lsa_Close failed with error [%s].\n",
+			  nt_errstr(status)));
+		return status;
+	}
+	if (!NT_STATUS_IS_OK(result)) {
+		DEBUG(0, ("lsa close failed with error [%s].\n",
+			  nt_errstr(result)));
+		return result;
+	}
+
+	return NT_STATUS_OK;
+}
+
+static NTSTATUS create_trust(TALLOC_CTX *mem_ctx,
+			     struct dcerpc_binding_handle *bind_hnd,
+			     struct policy_handle *pol_hnd,
+			     const char *trust_name,
+			     const char *trust_name_dns,
+			     struct dom_sid *domsid,
+			     struct lsa_TrustDomainInfoAuthInfoInternal *authinfo)
+{
+	NTSTATUS status;
+	struct lsa_CreateTrustedDomainEx2 r;
+	struct lsa_TrustDomainInfoInfoEx trustinfo;
+	struct policy_handle trustdom_handle;
+
+	trustinfo.sid = domsid;
+	trustinfo.netbios_name.string = trust_name;
+	trustinfo.domain_name.string = trust_name_dns;
+
+	trustinfo.trust_direction = LSA_TRUST_DIRECTION_INBOUND |
+				    LSA_TRUST_DIRECTION_OUTBOUND;
+
+	trustinfo.trust_type = LSA_TRUST_TYPE_UPLEVEL;
+
+	trustinfo.trust_attributes = LSA_TRUST_ATTRIBUTE_FOREST_TRANSITIVE;
+
+	r.in.policy_handle = pol_hnd;
+	r.in.info = &trustinfo;
+	r.in.auth_info = authinfo;
+	r.in.access_mask = LSA_TRUSTED_SET_POSIX | LSA_TRUSTED_SET_AUTH |
+			   LSA_TRUSTED_QUERY_DOMAIN_NAME;
+	r.out.trustdom_handle = &trustdom_handle;
+
+	status = dcerpc_lsa_CreateTrustedDomainEx2_r(bind_hnd, mem_ctx, &r);
+	if (!NT_STATUS_IS_OK(status)) {
+		DEBUG(0, ("dcerpc_lsa_CreateTrustedDomainEx2_r failed "
+			  "with error [%s].\n", nt_errstr(status)));
+		return status;
+	}
+	if (!NT_STATUS_IS_OK(r.out.result)) {
+		DEBUG(0, ("CreateTrustedDomainEx2_r returned [%s].\n",
+			  nt_errstr(r.out.result)));
+		return r.out.result;
+	}
+
+	return NT_STATUS_OK;
+}
+
+static NTSTATUS get_domain_info(TALLOC_CTX *mem_ctx,
+				struct dcerpc_binding_handle *bind_hdn,
+				struct policy_handle *pol_hnd,
+				struct dom_data *dom_data)
+{
+	NTSTATUS status;
+	struct lsa_QueryInfoPolicy2 qr;
+
+	qr.in.handle = pol_hnd;
+	qr.in.level = LSA_POLICY_INFO_DNS;
+
+	status = dcerpc_lsa_QueryInfoPolicy2_r(bind_hdn, mem_ctx, &qr);
+	if (!NT_STATUS_IS_OK(status)) {
+		DEBUG(0, ("dcerpc_lsa_QueryInfoPolicy2_r failed "
+			  "with error [%s].\n", nt_errstr(status)));
+		return status;
+	}
+
+	if (!NT_STATUS_IS_OK(qr.out.result)) {
+		DEBUG(0, ("QueryInfoPolicy2 returned [%s].\n",
+			  nt_errstr(qr.out.result)));
+		return qr.out.result;
+	}
+
+	dom_data->domain_name = talloc_strdup(mem_ctx,
+					      (*qr.out.info)->dns.name.string);
+	dom_data->dns_domain_name = talloc_strdup(mem_ctx,
+					 (*qr.out.info)->dns.dns_domain.string);
+	dom_data->domsid = dom_sid_dup(mem_ctx, (*qr.out.info)->dns.sid);
+	if (dom_data->domain_name == NULL ||
+	    dom_data->dns_domain_name == NULL ||
+	    dom_data->domsid == NULL) {
+		DEBUG(0, ("Copying domain data failed.\n"));
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	DEBUG(0, ("Got the following domain info [%s][%s][%s].\n",
+		  dom_data->domain_name, dom_data->dns_domain_name,
+		  sid_string_talloc(mem_ctx, dom_data->domsid)));
+
+	return NT_STATUS_OK;
+}
+
+static NTSTATUS connect_and_get_info(TALLOC_CTX *mem_ctx,
+				     struct net_context *net_ctx,
+				     struct cli_state **cli,
+				     struct rpc_pipe_client **pipe_hnd,
+				     struct policy_handle *pol_hnd,
+				     struct dom_data *dom_data)
+{
+	NTSTATUS status;
+	NTSTATUS result;
+
+	status = net_make_ipc_connection_ex(net_ctx, NULL, NULL, NULL,
+					    NET_FLAGS_PDC, cli);
+	if (!NT_STATUS_IS_OK(status)) {
+		DEBUG(0, ("Failed to connect to [%s] with error [%s]\n",
+			  net_ctx->opt_host, nt_errstr(status)));
+		return status;
+	}
+
+	status = cli_rpc_pipe_open_noauth(*cli, &ndr_table_lsarpc.syntax_id, pipe_hnd);
+	if (!NT_STATUS_IS_OK(status)) {
+		DEBUG(0, ("Failed to initialise lsa pipe with error [%s]\n",
+			  nt_errstr(status)));
+		return status;
+	}
+
+	status = dcerpc_lsa_open_policy2((*pipe_hnd)->binding_handle,
+					 mem_ctx,
+					 (*pipe_hnd)->srv_name_slash,
+					 false,
+					 (LSA_POLICY_VIEW_LOCAL_INFORMATION |
+					  LSA_POLICY_TRUST_ADMIN |
+					  LSA_POLICY_CREATE_SECRET),
+					 pol_hnd,
+					 &result);
+	if (!NT_STATUS_IS_OK(status)) {
+		DEBUG(0, ("Failed to open policy handle with error [%s]\n",
+			  nt_errstr(status)));
+		return status;
+	}
+	if (!NT_STATUS_IS_OK(result)) {
+		DEBUG(0, ("lsa_open_policy2 with error [%s]\n",
+			  nt_errstr(result)));
+		return result;
+	}
+
+	status = get_domain_info(mem_ctx, (*pipe_hnd)->binding_handle,
+				 pol_hnd, dom_data);
+	if (!NT_STATUS_IS_OK(status)) {
+		DEBUG(0, ("get_domain_info failed with error [%s].\n",
+			  nt_errstr(status)));
+		return status;
+	}
+
+	return NT_STATUS_OK;
+}
+
+static bool get_trust_domain_passwords_auth_blob(TALLOC_CTX *mem_ctx,
+						 const char *password,
+						 DATA_BLOB *auth_blob)
+{
+	struct trustDomainPasswords auth_struct;
+	struct AuthenticationInformation *auth_info_array;
+	enum ndr_err_code ndr_err;
+	size_t converted_size;
+
+	generate_random_buffer(auth_struct.confounder,
+			       sizeof(auth_struct.confounder));
+
+	auth_info_array = talloc_array(mem_ctx,
+				       struct AuthenticationInformation, 1);
+	if (auth_info_array == NULL) {
+		return false;
+	}
+
+	auth_info_array[0].AuthType = TRUST_AUTH_TYPE_CLEAR;
+	if (!convert_string_talloc(mem_ctx, CH_UNIX, CH_UTF16, password,
+				  strlen(password),
+				  &auth_info_array[0].AuthInfo.clear.password,
+				  &converted_size)) {
+		return false;
+	}
+
+	auth_info_array[0].AuthInfo.clear.size = converted_size;
+
+	auth_struct.outgoing.count = 1;
+	auth_struct.outgoing.current.count = 1;
+	auth_struct.outgoing.current.array = auth_info_array;
+	auth_struct.outgoing.previous.count = 0;
+	auth_struct.outgoing.previous.array = NULL;
+
+	auth_struct.incoming.count = 1;
+	auth_struct.incoming.current.count = 1;
+	auth_struct.incoming.current.array = auth_info_array;
+	auth_struct.incoming.previous.count = 0;
+	auth_struct.incoming.previous.array = NULL;
+
+	ndr_err = ndr_push_struct_blob(auth_blob, mem_ctx, &auth_struct,
+				       (ndr_push_flags_fn_t)ndr_push_trustDomainPasswords);
+	if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
+		return false;
+	}
+
+	return true;
+}
+
+static int parse_trust_args(TALLOC_CTX *mem_ctx, int argc, const char **argv, struct other_dom_data **_o, char **_trustpw)
+{
+	size_t c;
+	struct other_dom_data *o = NULL;
+	char *trustpw = NULL;
+	int ret = EFAULT;
+
+	if (argc == 0) {
+		return EINVAL;
+	}
+
+	o = talloc_zero(mem_ctx, struct other_dom_data);
+	if (o == NULL) {
+		DEBUG(0, ("talloc_zero failed.\n"));
+		return ENOMEM;
+	}
+
+	for (c = 0; c < argc; c++) {
+		if (strnequal(argv[c], ARG_OTHERSERVER, sizeof(ARG_OTHERSERVER)-1)) {
+			o->host = talloc_strdup(o, argv[c] + sizeof(ARG_OTHERSERVER)-1);
+			if (o->host == NULL) {
+				ret = ENOMEM;
+				goto failed;
+			}
+		} else if (strnequal(argv[c], ARG_OTHERUSER, sizeof(ARG_OTHERUSER)-1)) {
+			o->user_name = talloc_strdup(o, argv[c] + sizeof(ARG_OTHERUSER)-1);
+			if (o->user_name == NULL) {
+				ret = ENOMEM;
+				goto failed;
+			}
+		} else if (strnequal(argv[c], ARG_OTHERDOMAINSID, sizeof(ARG_OTHERDOMAINSID)-1)) {
+			o->domain_sid_str = talloc_strdup(o, argv[c] + sizeof(ARG_OTHERDOMAINSID)-1);
+			if (o->domain_sid_str == NULL) {
+				ret = ENOMEM;
+				goto failed;
+			}
+		} else if (strnequal(argv[c], ARG_OTHERDOMAIN, sizeof(ARG_OTHERDOMAIN)-1)) {
+			o->dns_domain_name = talloc_strdup(o, argv[c] + sizeof(ARG_OTHERDOMAIN)-1);
+			if (o->dns_domain_name == NULL) {
+				ret = ENOMEM;
+				goto failed;
+			}
+		} else if (strnequal(argv[c], ARG_OTHERNETBIOSDOMAIN, sizeof(ARG_OTHERNETBIOSDOMAIN)-1)) {
+			o->domain_name = talloc_strdup(o, argv[c] + sizeof(ARG_OTHERNETBIOSDOMAIN)-1);
+			if (o->domain_name == NULL) {
+				ret = ENOMEM;
+				goto failed;
+			}
+		} else if (strnequal(argv[c], ARG_TRUSTPW, sizeof(ARG_TRUSTPW)-1)) {
+			trustpw = talloc_strdup(mem_ctx, argv[c] + sizeof(ARG_TRUSTPW)-1);
+			if (trustpw == NULL) {
+				ret = ENOMEM;
+				goto failed;
+			}
+		} else {
+			DEBUG(0, ("Unsupported option [%s].\n", argv[c]));
+			ret = EINVAL;
+			goto failed;
+		}
+	}
+
+	*_o = o;
+	*_trustpw = trustpw;
+
+	return 0;
+
+failed:
+	talloc_free(o);
+	talloc_free(trustpw);
+	return ret;
+}
+
+static void print_trust_usage(void)
+{
+	d_printf(  "%s\n"
+		   "net rpc trust create [options]\n"
+		   "\nOptions:\n"
+		   "\totherserver=DC in other domain\n"
+		   "\totheruser=Admin user in other domain\n"
+		   "\totherdomainsid=SID of other domain\n"
+		   "\tother_netbios_domain=NetBIOS/short name of other domain\n"
+		   "\totherdomain=Full/DNS name of other domain\n"
+		   "\ttrustpw=Trust password\n"
+		   "\nExamples:\n"
+		   "\tnet rpc trust create otherserver=oname otheruser=ouser -S lname -U luser\n"
+		   "\tnet rpc trust create otherdomainsid=S-... other_netbios_domain=odom otherdomain=odom.org trustpw=secret -S lname -U luser\n"
+		   "  %s\n",
+		 _("Usage:"),
+		 _("Create trust between two domains"));
+}
+
+static int rpc_trust_create(struct net_context *net_ctx, int argc,
+			    const char **argv)
+{
+	TALLOC_CTX *mem_ctx;
+	NTSTATUS status;
+	int ret;
+	int success = -1;
+	struct cli_state *cli[2] = {NULL, NULL};
+	struct rpc_pipe_client *pipe_hnd[2] = {NULL, NULL};
+	struct policy_handle pol_hnd[2];
+	struct lsa_TrustDomainInfoAuthInfoInternal authinfo;
+	DATA_BLOB auth_blob;
+	char *trust_pw = NULL;
+	struct other_dom_data *other_dom_data;
+	struct net_context *other_net_ctx = NULL;
+	struct dom_data dom_data[2];
+
+	if (net_ctx->display_usage) {
+		print_trust_usage();
+		return 0;
+	}
+
+	mem_ctx = talloc_init("trust create");
+	if (mem_ctx == NULL) {
+		DEBUG(0, ("talloc_init failed.\n"));
+		return -1;
+	}
+
+	ret = parse_trust_args(mem_ctx, argc, argv, &other_dom_data, &trust_pw);
+	if (ret != 0) {
+		if (ret == EINVAL) {
+			print_trust_usage();
+		} else {
+			DEBUG(0, ("Failed to parse arguments.\n"));
+		}
+		goto done;
+	}
+
+	if (other_dom_data->host != 0) {
+		other_net_ctx = talloc_zero(other_dom_data, struct net_context);
+		if (other_net_ctx == NULL) {
+			DEBUG(0, ("talloc_zero failed.\n"));
+			goto done;
+		}
+
+		other_net_ctx->opt_host = other_dom_data->host;
+		other_net_ctx->opt_user_name = other_dom_data->user_name;
+	} else {
+		dom_data[1].domsid = dom_sid_parse_talloc(mem_ctx,
+						other_dom_data->domain_sid_str);
+		dom_data[1].domain_name = other_dom_data->domain_name;
+		dom_data[1].dns_domain_name = other_dom_data->dns_domain_name;
+
+		if (dom_data[1].domsid == NULL ||
+		    dom_data[1].domain_name == NULL ||
+		    dom_data[1].dns_domain_name == NULL) {
+			DEBUG(0, ("Missing required argument.\n"));
+			print_trust_usage();
+			goto done;
+		}
+	}
+
+	status = connect_and_get_info(mem_ctx, net_ctx, &cli[0], &pipe_hnd[0],
+				      &pol_hnd[0], &dom_data[0]);
+	if (!NT_STATUS_IS_OK(status)) {
+		DEBUG(0, ("connect_and_get_info failed with error [%s]\n",
+			  nt_errstr(status)));
+		goto done;
+	}
+
+	if (other_net_ctx != NULL) {
+		status = connect_and_get_info(mem_ctx, other_net_ctx,
+					      &cli[1], &pipe_hnd[1],
+					      &pol_hnd[1], &dom_data[1]);
+		if (!NT_STATUS_IS_OK(status)) {
+			DEBUG(0, ("connect_and_get_info failed with error [%s]\n",
+				  nt_errstr(status)));
+			goto done;
+		}
+	}
+
+	if (trust_pw == NULL) {
+		if (other_net_ctx == NULL) {
+			DEBUG(0, ("Missing either trustpw or otherhost.\n"));
+			goto done;
+		}
+
+		DEBUG(0, ("Using random trust password.\n"));
+/* FIXME: why only 8 characters work? Would it be possible to use a random
+ * binary password? */
+		trust_pw = generate_random_str(mem_ctx, 8);
+		if (trust_pw == NULL) {
+			DEBUG(0, ("generate_random_str failed.\n"));
+			goto done;
+		}
+	} else {
+		DEBUG(0, ("Using user provided password.\n"));
+	}
+
+	if (!get_trust_domain_passwords_auth_blob(mem_ctx, trust_pw,
+						  &auth_blob)) {
+		DEBUG(0, ("get_trust_domain_passwords_auth_blob failed\n"));
+		goto done;
+	}
+
+	authinfo.auth_blob.data = talloc_memdup(mem_ctx, auth_blob.data,
+						auth_blob.length);
+	if (authinfo.auth_blob.data == NULL) {
+		goto done;
+	}
+	authinfo.auth_blob.size = auth_blob.length;
+
+	arcfour_crypt_blob(authinfo.auth_blob.data, authinfo.auth_blob.size,
+			   &cli[0]->user_session_key);
+
+	status = create_trust(mem_ctx, pipe_hnd[0]->binding_handle, &pol_hnd[0],
+			      dom_data[1].domain_name,
+			      dom_data[1].dns_domain_name, dom_data[1].domsid,
+			      &authinfo);
+	if (!NT_STATUS_IS_OK(status)) {
+		DEBUG(0, ("create_trust failed with error [%s].\n",
+		nt_errstr(status)));
+		goto done;
+	}
+
+	if (other_net_ctx != NULL) {
+		talloc_free(authinfo.auth_blob.data);
+		authinfo.auth_blob.data = talloc_memdup(mem_ctx, auth_blob.data,
+							auth_blob.length);
+		if (authinfo.auth_blob.data == NULL) {
+			goto done;
+		}
+		authinfo.auth_blob.size = auth_blob.length;
+
+		arcfour_crypt_blob(authinfo.auth_blob.data, authinfo.auth_blob.size,
+				   &cli[1]->user_session_key);
+
+		status = create_trust(mem_ctx, pipe_hnd[1]->binding_handle,
+				      &pol_hnd[1], dom_data[0].domain_name,
+				      dom_data[0].dns_domain_name,
+				      dom_data[0].domsid, &authinfo);
+		if (!NT_STATUS_IS_OK(status)) {
+			DEBUG(0, ("create_trust failed with error [%s].\n",
+			nt_errstr(status)));
+			goto done;
+		}
+	}
+
+	status = close_handle(mem_ctx, pipe_hnd[0]->binding_handle,
+			      &pol_hnd[0]);
+	if (!NT_STATUS_IS_OK(status)) {
+		DEBUG(0, ("close_handle failed with error [%s].\n",
+			  nt_errstr(status)));
+		goto done;
+	}
+
+	if (other_net_ctx != NULL) {
+		status = close_handle(mem_ctx, pipe_hnd[1]->binding_handle,
+				      &pol_hnd[1]);
+		if (!NT_STATUS_IS_OK(status)) {
+			DEBUG(0, ("close_handle failed with error [%s].\n",
+				  nt_errstr(status)));
+			goto done;
+		}
+	}
+
+	success = 0;
+
+done:
+	cli_shutdown(cli[0]);
+	cli_shutdown(cli[1]);
+	talloc_destroy(mem_ctx);
+	return success;
+}
+
+int net_rpc_trust(struct net_context *c, int argc, const char **argv)
+{
+	struct functable func[] = {
+		{
+			"create",
+			rpc_trust_create,
+			NET_TRANSPORT_RPC,
+			N_("Create trusts"),
+			N_("net rpc trust create\n"
+			   "    Create trusts")
+		},
+		{NULL, NULL, 0, NULL, NULL}
+	};
+
+	return net_run_function(c, argc, argv, "net rpc trust", func);
+}
diff --git a/source3/wscript_build b/source3/wscript_build
index b709b5f80b..cb28da4a13 100755
--- a/source3/wscript_build
+++ b/source3/wscript_build
@@ -544,6 +544,7 @@ NET_SRC1 = '''utils/net.c utils/net_ads.c utils/net_help.c
               utils/net_serverid.c
               utils/net_eventlog.c
               utils/net_printing.c
+              utils/net_rpc_trust.c
               registry/reg_parse.c registry/reg_format.c
               registry/reg_parse_internal.c registry/reg_import.c
               lib/cbuf.c lib/srprs.c'''