vici: Certification Authority support added.

CDP and OCSP URIs for a one or multiple certification authorities
can be added via the VICI interface. swanctl allows to read
definitions from a new authorities section.

src/swanctl/Makefile.am

@@ -7,10 +7,12 @@ swanctl_SOURCES = \
 	commands/install.c \
 	commands/list_sas.c \
 	commands/list_pols.c \
+	commands/list_authorities.c \
 	commands/list_conns.c \
 	commands/list_certs.c \
 	commands/list_pools.c \
 	commands/load_all.c \
+	commands/load_authorities.h  commands/load_authorities.c \
 	commands/load_conns.c commands/load_conns.h \
 	commands/load_creds.c commands/load_creds.h \
 	commands/load_pools.c commands/load_pools.h \

src/swanctl/command.c

@@ -211,7 +211,7 @@ int command_usage(char *error, ...)
 	{
 		for (i = 0; i < MAX_COMMANDS && cmds[i].cmd; i++)
 		{
-			fprintf(out, "  swanctl --%-15s (-%c)  %s\n",
+			fprintf(out, "  swanctl --%-16s (-%c)  %s\n",
 					cmds[i].cmd, cmds[i].op, cmds[i].description);
 		}
 	}

src/swanctl/command.h

@@ -27,7 +27,7 @@
 /**
  * Maximum number of commands (+1).
  */
-#define MAX_COMMANDS 19
+#define MAX_COMMANDS 21
 
 /**
  * Maximum number of options in a command (+3)

src/swanctl/commands/list_authorities.c

@@ -0,0 +1,169 @@
+/*
+ * Copyright (C) 2015 Andreas Steffen
+ * HSR Hochschule fuer Technik Rapperswil
+ *
+ * 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 (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ *
+ * 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.
+ */
+
+#define _GNU_SOURCE
+#include <stdio.h>
+#include <errno.h>
+
+#include "command.h"
+
+#define LABELED_CRL_URI		(1 << 0)
+#define LABELED_OCSP_URI	(1 << 1)
+
+CALLBACK(authority_kv, int,
+	void *null, vici_res_t *res, char *name, void *value, int len)
+{
+	chunk_t chunk;
+
+	chunk = chunk_create(value, len);
+	if (chunk_printable(chunk, NULL, ' '))
+	{
+		printf("  %s: %.*s\n", name, len, value);
+	}
+
+	return 0;
+}
+
+
+CALLBACK(authority_list, int,
+	int *labeled, vici_res_t *res, char *name, void *value, int len)
+{
+	chunk_t chunk;
+
+	chunk = chunk_create(value, len);
+	if (chunk_printable(chunk, NULL, ' '))
+	{
+		if (streq(name, "crl_uris"))
+		{
+			printf("  %s %.*s\n",
+				  (*labeled & LABELED_CRL_URI)  ? "          " : "crl_uris: ", 
+				  len, value);
+			*labeled |= LABELED_CRL_URI;
+		}
+		if (streq(name, "ocsp_uris"))
+		{
+			printf("  %s %.*s\n",
+				  (*labeled & LABELED_OCSP_URI) ? "          " : "ocsp_uris:",
+				  len, value);
+			*labeled %= LABELED_OCSP_URI;
+		}
+	}
+	return 0;
+}
+
+CALLBACK(authorities, int,
+	void *null, vici_res_t *res, char *name)
+{
+	int labeled = 0;
+
+	printf("%s:\n", name);
+
+	return vici_parse_cb(res, NULL, authority_kv, authority_list, &labeled);
+}
+
+CALLBACK(list_cb, void,
+	command_format_options_t *format, char *name, vici_res_t *res)
+{
+	if (*format & COMMAND_FORMAT_RAW)
+	{
+		vici_dump(res, "list-authorities event", *format & COMMAND_FORMAT_PRETTY,
+				  stdout);
+	}
+	else
+	{
+		if (vici_parse_cb(res, authorities, NULL, NULL, NULL) != 0)
+		{
+			fprintf(stderr, "parsing authority event failed: %s\n",
+					strerror(errno));
+		}
+	}
+}
+
+static int list_authorities(vici_conn_t *conn)
+{
+	vici_req_t *req;
+	vici_res_t *res;
+	command_format_options_t format = COMMAND_FORMAT_NONE;
+	char *arg, *ca_name = NULL;;
+	int ret = 0;
+
+	while (TRUE)
+	{
+		switch (command_getopt(&arg))
+		{
+			case 'h':
+				return command_usage(NULL);
+			case 'n':
+				ca_name = arg;
+				continue;
+			case 'P':
+				format |= COMMAND_FORMAT_PRETTY;
+				/* fall through to raw */
+			case 'r':
+				format |= COMMAND_FORMAT_RAW;
+				continue;
+			case EOF:
+				break;
+			default:
+				return command_usage("invalid --list-authorities option");
+		}
+		break;
+	}
+	if (vici_register(conn, "list-authority", list_cb, &format) != 0)
+	{
+		ret = errno;
+		fprintf(stderr, "registering for authorities failed: %s\n",
+				strerror(errno));
+		return ret;
+	}
+
+	req = vici_begin("list-authorities");
+	if (ca_name)
+	{
+		vici_add_key_valuef(req, "name", "%s", ca_name);
+	}
+	res = vici_submit(req, conn);
+	if (!res)
+	{
+		ret = errno;
+		fprintf(stderr, "list-authorities request failed: %s\n", strerror(errno));
+		return ret;
+	}
+	if (format & COMMAND_FORMAT_RAW)
+	{
+		vici_dump(res, "list-authorities reply", format & COMMAND_FORMAT_PRETTY,
+				  stdout);
+	}
+	vici_free_res(res);
+	return 0;
+}
+
+/**
+ * Register the command.
+ */
+static void __attribute__ ((constructor))reg()
+{
+	command_register((command_t) {
+		list_authorities, 'B', "list-authorities",
+		"list loaded authority configurations",
+		{"[--raw|--pretty]"},
+		{
+			{"help",		'h', 0, "show usage information"},
+			{"name",		'n', 1, "filter by authority name"},
+			{"raw",			'r', 0, "dump raw response message"},
+			{"pretty",		'P', 0, "dump raw response message in pretty print"},
+		}
+	});
+}

src/swanctl/commands/load_all.c

@@ -22,6 +22,7 @@
 #include "command.h"
 #include "swanctl.h"
 #include "load_creds.h"
+#include "load_authorities.h"
 #include "load_pools.h"
 #include "load_conns.h"
 
@@ -71,6 +72,10 @@ static int load_all(vici_conn_t *conn)
 		ret = load_creds_cfg(conn, format, cfg, clear, noprompt);
 	}
 	if (ret == 0)
+	{
+		ret = load_authorities_cfg(conn, format, cfg);
+	}
+	if (ret == 0)
 	{
 		ret = load_pools_cfg(conn, format, cfg);
 	}
@@ -90,7 +95,8 @@ static int load_all(vici_conn_t *conn)
 static void __attribute__ ((constructor))reg()
 {
 	command_register((command_t) {
-		load_all, 'q', "load-all", "load credentials, pools and connections",
+		load_all, 'q', "load-all",
+		"load credentials, authorities, pools and connections",
 		{"[--raw|--pretty] [--clear] [--noprompt]"},
 		{
 			{"help",		'h', 0, "show usage information"},

src/swanctl/commands/load_authorities.c

@@ -0,0 +1,365 @@
+/*
+ * Copyright (C) 2015 Andreas Steffen
+ * HSR Hochschule fuer Technik Rapperswil
+ *
+ * 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 (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ *
+ * 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.
+ */
+
+#define _GNU_SOURCE
+#include <stdio.h>
+#include <errno.h>
+#include <limits.h>
+
+#include "command.h"
+#include "swanctl.h"
+#include "load_authorities.h"
+
+/**
+ * Add a vici list from a comma separated string value
+ */
+static void add_list_key(vici_req_t *req, char *key, char *value)
+{
+	enumerator_t *enumerator;
+	char *token;
+
+	vici_begin_list(req, key);
+	enumerator = enumerator_create_token(value, ",", " ");
+	while (enumerator->enumerate(enumerator, &token))
+	{
+		vici_add_list_itemf(req, "%s", token);
+	}
+	enumerator->destroy(enumerator);
+	vici_end_list(req);
+}
+
+/**
+ * Add a vici certificate blob value given by its file patch
+ */
+static bool add_file_key_value(vici_req_t *req, char *key, char *value)
+{
+	chunk_t *map;
+	char *path, buf[PATH_MAX];
+
+	if (path_absolute(value))
+	{
+		path = value;
+	}
+	else
+	{
+		path = buf;
+		snprintf(path, PATH_MAX, "%s%s%s",
+				 SWANCTL_X509CADIR, DIRECTORY_SEPARATOR, value);
+	}
+	map = chunk_map(path, FALSE);
+
+	if (map)
+	{
+		vici_add_key_value(req, key, map->ptr, map->len);
+		chunk_unmap(map);
+		return TRUE;
+	}
+	else
+	{
+		fprintf(stderr, "loading ca certificate '%s' failed: %s\n",
+				path, strerror(errno));
+		return FALSE;
+	}
+}
+
+/**
+ * Translate sletting key/values from a section into vici key-values/lists
+ */
+static bool add_key_values(vici_req_t *req, settings_t *cfg, char *section)
+{
+	enumerator_t *enumerator;
+	char *key, *value;
+	bool ret = TRUE;
+
+	enumerator = cfg->create_key_value_enumerator(cfg, section);
+	while (enumerator->enumerate(enumerator, &key, &value))
+	{
+		/* pool subnet is encoded as key/value, all other attributes as list */
+		if (streq(key, "cacert"))
+		{
+			ret = add_file_key_value(req, key, value);
+		}
+		else if (streq(key, "cert_uri_base"))
+		{
+			vici_add_key_valuef(req, key, "%s", value);
+		}
+		else
+		{
+			add_list_key(req, key, value);
+		}
+		if (!ret)
+		{
+			break;
+		}
+	}
+	enumerator->destroy(enumerator);
+
+	return ret;
+}
+
+/**
+ * Load an authority configuration
+ */
+static bool load_authority(vici_conn_t *conn, settings_t *cfg,
+						   char *section, command_format_options_t format)
+{
+	vici_req_t *req;
+	vici_res_t *res;
+	bool ret = TRUE;
+	char buf[128];
+
+	snprintf(buf, sizeof(buf), "%s.%s", "authorities", section);
+
+	req = vici_begin("load-authority");
+
+	vici_begin_section(req, section);
+	if (!add_key_values(req, cfg, buf))
+	{
+		vici_free_req(req);
+		return FALSE;
+	}
+	vici_end_section(req);
+
+	res = vici_submit(req, conn);
+	if (!res)
+	{
+		fprintf(stderr, "load-authority request failed: %s\n", strerror(errno));
+		return FALSE;
+	}
+	if (format & COMMAND_FORMAT_RAW)
+	{
+		vici_dump(res, "load-authority reply", format & COMMAND_FORMAT_PRETTY,
+				  stdout);
+	}
+	else if (!streq(vici_find_str(res, "no", "success"), "yes"))
+	{
+		fprintf(stderr, "loading authority '%s' failed: %s\n",
+				section, vici_find_str(res, "", "errmsg"));
+		ret = FALSE;
+	}
+	else
+	{
+		printf("loaded authority '%s'\n", section);
+	}
+	vici_free_res(res);
+	return ret;
+}
+
+CALLBACK(list_authority, int,
+	linked_list_t *list, vici_res_t *res, char *name, void *value, int len)
+{
+	if (streq(name, "authorities"))
+	{
+		char *str;
+
+		if (asprintf(&str, "%.*s", len, value) != -1)
+		{
+			list->insert_last(list, str);
+		}
+	}
+	return 0;
+}
+
+/**
+ * Create a list of currently loaded authorities
+ */
+static linked_list_t* list_authorities(vici_conn_t *conn,
+									   command_format_options_t format)
+{
+	linked_list_t *list;
+	vici_res_t *res;
+
+	list = linked_list_create();
+
+	res = vici_submit(vici_begin("get-authorities"), conn);
+	if (res)
+	{
+		if (format & COMMAND_FORMAT_RAW)
+		{
+			vici_dump(res, "get-authorities reply", format & COMMAND_FORMAT_PRETTY,
+					  stdout);
+		}
+		vici_parse_cb(res, NULL, NULL, list_authority, list);
+		vici_free_res(res);
+	}
+	return list;
+}
+
+/**
+ * Remove and free a string from a list
+ */
+static void remove_from_list(linked_list_t *list, char *str)
+{
+	enumerator_t *enumerator;
+	char *current;
+
+	enumerator = list->create_enumerator(list);
+	while (enumerator->enumerate(enumerator, &current))
+	{
+		if (streq(current, str))
+		{
+			list->remove_at(list, enumerator);
+			free(current);
+		}
+	}
+	enumerator->destroy(enumerator);
+}
+
+/**
+ * Unload a authority by name
+ */
+static bool unload_authority(vici_conn_t *conn, char *name,
+							 command_format_options_t format)
+{
+	vici_req_t *req;
+	vici_res_t *res;
+	bool ret = TRUE;
+
+	req = vici_begin("unload-authority");
+	vici_add_key_valuef(req, "name", "%s", name);
+	res = vici_submit(req, conn);
+	if (!res)
+	{
+		fprintf(stderr, "unload-authority request failed: %s\n", strerror(errno));
+		return FALSE;
+	}
+	if (format & COMMAND_FORMAT_RAW)
+	{
+		vici_dump(res, "unload-authority reply", format & COMMAND_FORMAT_PRETTY,
+				  stdout);
+	}
+	else if (!streq(vici_find_str(res, "no", "success"), "yes"))
+	{
+		fprintf(stderr, "unloading authority '%s' failed: %s\n",
+				name, vici_find_str(res, "", "errmsg"));
+		ret = FALSE;
+	}
+	vici_free_res(res);
+	return ret;
+}
+
+/**
+ * See header.
+ */
+int load_authorities_cfg(vici_conn_t *conn, command_format_options_t format,
+						 settings_t *cfg)
+{
+	u_int found = 0, loaded = 0, unloaded = 0;
+	char *section;
+	enumerator_t *enumerator;
+	linked_list_t *authorities;
+
+	authorities = list_authorities(conn, format);
+
+	enumerator = cfg->create_section_enumerator(cfg, "authorities");
+	while (enumerator->enumerate(enumerator, &section))
+	{
+		remove_from_list(authorities, section);
+		found++;
+		if (load_authority(conn, cfg, section, format))
+		{
+			loaded++;
+		}
+	}
+	enumerator->destroy(enumerator);
+
+	/* unload all authorities in daemon, but not in file */
+	while (authorities->remove_first(authorities, (void**)&section) == SUCCESS)
+	{
+		if (unload_authority(conn, section, format))
+		{
+			unloaded++;
+		}
+		free(section);
+	}
+	authorities->destroy(authorities);
+
+	if (format & COMMAND_FORMAT_RAW)
+	{
+		return 0;
+	}
+	if (found == 0)
+	{
+		printf("no authorities found, %u unloaded\n", unloaded);
+		return 0;
+	}
+	if (loaded == found)
+	{
+		printf("successfully loaded %u authorities, %u unloaded\n",
+			   loaded, unloaded);
+		return 0;
+	}
+	fprintf(stderr, "loaded %u of %u authorities, %u failed to load, "
+			"%u unloaded\n", loaded, found, found - loaded, unloaded);
+	return EINVAL;
+}
+
+static int load_authorities(vici_conn_t *conn)
+{
+	command_format_options_t format = COMMAND_FORMAT_NONE;
+	settings_t *cfg;
+	char *arg;
+	int ret;
+
+	while (TRUE)
+	{
+		switch (command_getopt(&arg))
+		{
+			case 'h':
+				return command_usage(NULL);
+			case 'P':
+				format |= COMMAND_FORMAT_PRETTY;
+				/* fall through to raw */
+			case 'r':
+				format |= COMMAND_FORMAT_RAW;
+				continue;
+			case EOF:
+				break;
+			default:
+				return command_usage("invalid --load-authorities option");
+		}
+		break;
+	}
+
+	cfg = settings_create(SWANCTL_CONF);
+	if (!cfg)
+	{
+		fprintf(stderr, "parsing '%s' failed\n", SWANCTL_CONF);
+		return EINVAL;
+	}
+
+	ret = load_authorities_cfg(conn, format, cfg);
+
+	cfg->destroy(cfg);
+
+	return ret;
+}
+
+/**
+ * Register the command.
+ */
+static void __attribute__ ((constructor))reg()
+{
+	command_register((command_t) {
+		load_authorities, 'b',
+		"load-authorities", "(re-)load authority configuration",
+		{"[--raw|--pretty]"},
+		{
+			{"help",		'h', 0, "show usage information"},
+			{"raw",			'r', 0, "dump raw response message"},
+			{"pretty",		'P', 0, "dump raw response message in pretty print"},
+		}
+	});
+}

src/swanctl/commands/load_authorities.h

@@ -0,0 +1,26 @@
+/*
+ * Copyright (C) 2015 Andreas Stefffen
+ * HSR Hochschule fuer Technik Rapperswil
+ *
+ * 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 (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ *
+ * 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.
+ */
+
+#include "command.h"
+
+/**
+ * Load all certification authority definitions from configuration file
+ *
+ * @param conn		vici connection to load to
+ * @param format	output format
+ * @param cfg		configuration to load from
+ */
+int load_authorities_cfg(vici_conn_t *conn, command_format_options_t format,
+						 settings_t *cfg);

src/swanctl/swanctl.8.in

@@ -53,9 +53,15 @@ list currently active IKE_SAs
 .B "\-P, \-\-list\-pols"
 list currently installed policies
 .TP
+.B "\-b, \-\-load\-authorities"
+(re\-)load certification authorities information
+.TP
 .B "\-L, \-\-list\-conns"
 list loaded configurations
 .TP
+.B "\-B, \-\-list\-authorities"
+list loaded certification authorities information
+.TP
 .B "\-x, \-\-list\-certs"
 list stored certificates
 .TP
@@ -63,7 +69,7 @@ list stored certificates
 list loaded pool configurations
 .TP
 .B "\-q, \-\-load\-all"
-(re\-)load credentials, pools and connections
+(re\-)load credentials, pools, authorities and connections
 .TP
 .B "\-c, \-\-load\-conns"
 (re\-)load connection configuration

src/swanctl/swanctl.opt

@@ -810,3 +810,35 @@ pools.<name>.<attr> =
 	subnets for the corresponding attribute types. Alternatively, **<attr>** can
 	be a numerical identifier, for which string attribute values are accepted
 	as well.
+
+authorities { # }
+	Section defining attributes of certification authorities.
+
+authorities.<name> { # }
+	Section defining a certification authority with a unique name.
+
+authorities.<name>.cacert =
+	CA certificate belonging to the certification authority.
+
+	The certificates may use a relative path from the **swanctl** _x509ca_
+	directory, or an absolute path.
+
+authorities.<name>.crl_uris =
+	Comma-separated list of CRL distribution points
+
+	Comma-separated list of CRL distribution points (ldap, http, or file URI)
+
+authorities.<name>.ocsp_uris =
+	Comma-separated list of OCSP URIs
+
+	Comma-separated list of OCSP URIs
+
+authorities.<name>.cert_uri_base =
+	Defines the base URI for the Hash and URL feature supported by IKEv2.
+
+	Defines the base URI for the Hash and URL feature supported by IKEv2.
+	Instead of exchanging complete certificates, IKEv2 allows one to send an
+	URI that resolves to the DER encoded certificate. The certificate URIs are
+	built by appending the SHA1 hash of the DER encoded certificates to this
+	base URI.
+