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-rw-r--r--src/libstrongswan/plugins/dnskey/Makefile.am12
-rw-r--r--src/libstrongswan/plugins/dnskey/Makefile.in571
-rw-r--r--src/libstrongswan/plugins/dnskey/dnskey_builder.c142
-rw-r--r--src/libstrongswan/plugins/dnskey/dnskey_builder.h51
-rw-r--r--src/libstrongswan/plugins/dnskey/dnskey_plugin.c60
-rw-r--r--src/libstrongswan/plugins/dnskey/dnskey_plugin.h47
6 files changed, 883 insertions, 0 deletions
diff --git a/src/libstrongswan/plugins/dnskey/Makefile.am b/src/libstrongswan/plugins/dnskey/Makefile.am
new file mode 100644
index 000000000..fd020f505
--- /dev/null
+++ b/src/libstrongswan/plugins/dnskey/Makefile.am
@@ -0,0 +1,12 @@
+
+INCLUDES = -I$(top_srcdir)/src/libstrongswan
+
+AM_CFLAGS = -rdynamic
+
+plugin_LTLIBRARIES = libstrongswan-dnskey.la
+
+libstrongswan_dnskey_la_SOURCES = dnskey_plugin.h dnskey_plugin.c \
+ dnskey_builder.h dnskey_builder.c
+
+libstrongswan_dnskey_la_LDFLAGS = -module -avoid-version
+
diff --git a/src/libstrongswan/plugins/dnskey/Makefile.in b/src/libstrongswan/plugins/dnskey/Makefile.in
new file mode 100644
index 000000000..d7d5ff29b
--- /dev/null
+++ b/src/libstrongswan/plugins/dnskey/Makefile.in
@@ -0,0 +1,571 @@
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+# @configure_input@
+
+# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
+# 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation,
+# Inc.
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
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+ -test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+ -test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+
+maintainer-clean-generic:
+ @echo "This command is intended for maintainers to use"
+ @echo "it deletes files that may require special tools to rebuild."
+clean: clean-am
+
+clean-am: clean-generic clean-libtool clean-pluginLTLIBRARIES \
+ mostlyclean-am
+
+distclean: distclean-am
+ -rm -rf ./$(DEPDIR)
+ -rm -f Makefile
+distclean-am: clean-am distclean-compile distclean-generic \
+ distclean-tags
+
+dvi: dvi-am
+
+dvi-am:
+
+html: html-am
+
+html-am:
+
+info: info-am
+
+info-am:
+
+install-data-am: install-pluginLTLIBRARIES
+
+install-dvi: install-dvi-am
+
+install-dvi-am:
+
+install-exec-am:
+
+install-html: install-html-am
+
+install-html-am:
+
+install-info: install-info-am
+
+install-info-am:
+
+install-man:
+
+install-pdf: install-pdf-am
+
+install-pdf-am:
+
+install-ps: install-ps-am
+
+install-ps-am:
+
+installcheck-am:
+
+maintainer-clean: maintainer-clean-am
+ -rm -rf ./$(DEPDIR)
+ -rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-generic
+
+mostlyclean: mostlyclean-am
+
+mostlyclean-am: mostlyclean-compile mostlyclean-generic \
+ mostlyclean-libtool
+
+pdf: pdf-am
+
+pdf-am:
+
+ps: ps-am
+
+ps-am:
+
+uninstall-am: uninstall-pluginLTLIBRARIES
+
+.MAKE: install-am install-strip
+
+.PHONY: CTAGS GTAGS all all-am check check-am clean clean-generic \
+ clean-libtool clean-pluginLTLIBRARIES ctags distclean \
+ distclean-compile distclean-generic distclean-libtool \
+ distclean-tags distdir dvi dvi-am html html-am info info-am \
+ install install-am install-data install-data-am install-dvi \
+ install-dvi-am install-exec install-exec-am install-html \
+ install-html-am install-info install-info-am install-man \
+ install-pdf install-pdf-am install-pluginLTLIBRARIES \
+ install-ps install-ps-am install-strip installcheck \
+ installcheck-am installdirs maintainer-clean \
+ maintainer-clean-generic mostlyclean mostlyclean-compile \
+ mostlyclean-generic mostlyclean-libtool pdf pdf-am ps ps-am \
+ tags uninstall uninstall-am uninstall-pluginLTLIBRARIES
+
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/src/libstrongswan/plugins/dnskey/dnskey_builder.c b/src/libstrongswan/plugins/dnskey/dnskey_builder.c
new file mode 100644
index 000000000..ba20e7158
--- /dev/null
+++ b/src/libstrongswan/plugins/dnskey/dnskey_builder.c
@@ -0,0 +1,142 @@
+/*
+ * Copyright (C) 2009 Martin Willi
+ * 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 "dnskey_builder.h"
+
+#include <debug.h>
+#include <credentials/keys/private_key.h>
+
+
+typedef struct dnskey_rr_t dnskey_rr_t;
+typedef enum dnskey_algorithm_t dnskey_algorithm_t;
+
+/**
+ * Header of a DNSKEY resource record
+ */
+struct dnskey_rr_t {
+ u_int16_t flags;
+ u_int8_t protocol;
+ u_int8_t algorithm;
+ u_int8_t data[];
+} __attribute__((__packed__));
+
+/**
+ * DNSSEC algorithms, RFC4034 Appendix A.1.
+ */
+enum dnskey_algorithm_t {
+ DNSKEY_ALG_RSA_MD5 = 1,
+ DNSKEY_ALG_DH = 2,
+ DNSKEY_ALG_DSA = 3,
+ DNSKEY_ALG_ECC = 4,
+ DNSKEY_ALG_RSA_SHA1 = 5,
+};
+
+/**
+ * Load a generic public key from a DNSKEY RR blob
+ */
+static dnskey_public_key_t *parse_public_key(chunk_t blob)
+{
+ dnskey_rr_t *rr = (dnskey_rr_t*)blob.ptr;
+
+ if (blob.len < sizeof(dnskey_rr_t))
+ {
+ DBG1("DNSKEY too short");
+ return NULL;
+ }
+ blob = chunk_skip(blob, sizeof(dnskey_rr_t));
+
+ switch (rr->algorithm)
+ {
+ case DNSKEY_ALG_RSA_SHA1:
+ return lib->creds->create(lib->creds, CRED_PUBLIC_KEY, KEY_RSA,
+ BUILD_BLOB_DNSKEY, blob, BUILD_END);
+ default:
+ DBG1("DNSKEY public key algorithm %d not supported", rr->algorithm);
+ return NULL;
+ }
+}
+
+/**
+ * Load a RSA public key from DNSKEY RR data
+ */
+static dnskey_public_key_t *parse_rsa_public_key(chunk_t blob)
+{
+ chunk_t n, e;
+
+ if (blob.len < 3)
+ {
+ DBG1("RFC 3110 public key blob too short for exponent length");
+ return NULL;
+ }
+
+ if (blob.ptr[0])
+ {
+ e.len = blob.ptr[0];
+ blob = chunk_skip(blob, 1);
+ }
+ else
+ {
+ e.len = blob.ptr[1] * 256 + blob.ptr[2];
+ blob = chunk_skip(blob, 3);
+ }
+ e.ptr = blob.ptr;
+ if (e.len >= blob.len)
+ {
+ DBG1("RFC 3110 public key blob too short for exponent");
+ return NULL;
+ }
+ n = chunk_skip(blob, e.len);
+
+ return lib->creds->create(lib->creds, CRED_PUBLIC_KEY, KEY_RSA,
+ BUILD_RSA_MODULUS, n, BUILD_RSA_PUB_EXP, e,
+ BUILD_END);
+}
+
+/**
+ * See header.
+ */
+dnskey_public_key_t *dnskey_public_key_load(key_type_t type, va_list args)
+{
+ chunk_t blob = chunk_empty;
+
+ while (TRUE)
+ {
+ switch (va_arg(args, builder_part_t))
+ {
+ case BUILD_BLOB_DNSKEY:
+ blob = va_arg(args, chunk_t);
+ continue;
+ case BUILD_END:
+ break;
+ default:
+ return NULL;
+ }
+ break;
+ }
+ if (!blob.ptr)
+ {
+ return NULL;
+ }
+ switch (type)
+ {
+ case KEY_ANY:
+ return parse_public_key(blob);
+ case KEY_RSA:
+ return parse_rsa_public_key(blob);
+ default:
+ return NULL;
+ }
+}
+
diff --git a/src/libstrongswan/plugins/dnskey/dnskey_builder.h b/src/libstrongswan/plugins/dnskey/dnskey_builder.h
new file mode 100644
index 000000000..16eff3269
--- /dev/null
+++ b/src/libstrongswan/plugins/dnskey/dnskey_builder.h
@@ -0,0 +1,51 @@
+/*
+ * Copyright (C) 2009 Martin Willi
+ * 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.
+ */
+
+/**
+ * @defgroup dnskey_public_key dnskey_public_key
+ * @{ @ingroup dnskey_p
+ */
+
+#ifndef DNSKEY_BUILDER_H_
+#define DNSKEY_BUILDER_H_
+
+#include <credentials/builder.h>
+#include <credentials/keys/public_key.h>
+
+typedef struct dnskey_public_key_t dnskey_public_key_t;
+
+/**
+ * Public key implementation supporting RFC4034 decoding.
+ */
+struct dnskey_public_key_t {
+
+ /**
+ * Implements public_key_t interface.
+ */
+ public_key_t interface;
+};
+
+/**
+ * Load a public key in RFC4034 format.
+ *
+ * Takes a BUILD_BLOB_DNSKEY to parse the public key.
+ *
+ * @param type type of the key, must be KEY_RSA or KEY_ANY
+ * @param args builder_part_t argument list
+ * @return built key, NULL on failure
+ */
+dnskey_public_key_t *dnskey_public_key_load(key_type_t type, va_list args);
+
+#endif /** DNSKEY_BUILDER_H_ @}*/
diff --git a/src/libstrongswan/plugins/dnskey/dnskey_plugin.c b/src/libstrongswan/plugins/dnskey/dnskey_plugin.c
new file mode 100644
index 000000000..83dbe31a1
--- /dev/null
+++ b/src/libstrongswan/plugins/dnskey/dnskey_plugin.c
@@ -0,0 +1,60 @@
+/*
+ * Copyright (C) 2009 Martin Willi
+ * 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 "dnskey_plugin.h"
+
+#include <library.h>
+#include "dnskey_builder.h"
+
+typedef struct private_dnskey_plugin_t private_dnskey_plugin_t;
+
+/**
+ * private data of dnskey_plugin
+ */
+struct private_dnskey_plugin_t {
+
+ /**
+ * public functions
+ */
+ dnskey_plugin_t public;
+};
+
+/**
+ * Implementation of dnskey_plugin_t.dnskeytroy
+ */
+static void destroy(private_dnskey_plugin_t *this)
+{
+ lib->creds->remove_builder(lib->creds,
+ (builder_function_t)dnskey_public_key_load);
+ free(this);
+}
+
+/*
+ * see header file
+ */
+plugin_t *plugin_create()
+{
+ private_dnskey_plugin_t *this = malloc_thing(private_dnskey_plugin_t);
+
+ this->public.plugin.destroy = (void(*)(plugin_t*))destroy;
+
+ lib->creds->add_builder(lib->creds, CRED_PUBLIC_KEY, KEY_ANY,
+ (builder_function_t)dnskey_public_key_load);
+ lib->creds->add_builder(lib->creds, CRED_PUBLIC_KEY, KEY_RSA,
+ (builder_function_t)dnskey_public_key_load);
+
+ return &this->public.plugin;
+}
+
diff --git a/src/libstrongswan/plugins/dnskey/dnskey_plugin.h b/src/libstrongswan/plugins/dnskey/dnskey_plugin.h
new file mode 100644
index 000000000..17790e1c6
--- /dev/null
+++ b/src/libstrongswan/plugins/dnskey/dnskey_plugin.h
@@ -0,0 +1,47 @@
+/*
+ * Copyright (C) 2009 Martin Willi
+ * 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.
+ */
+
+/**
+ * @defgroup dnskey_p dnskey
+ * @ingroup plugins
+ *
+ * @defgroup dnskey_plugin dnskey_plugin
+ * @{ @ingroup dnskey_p
+ */
+
+#ifndef DNSKEY_PLUGIN_H_
+#define DNSKEY_PLUGIN_H_
+
+#include <plugins/plugin.h>
+
+typedef struct dnskey_plugin_t dnskey_plugin_t;
+
+/**
+ * Plugin providing RFC4034 public key decoding functions.
+ */
+struct dnskey_plugin_t {
+
+ /**
+ * implements plugin interface
+ */
+ plugin_t plugin;
+};
+
+/**
+ * Create a dnskey_plugin instance.
+ */
+plugin_t *plugin_create();
+
+#endif /** DNSKEY_PLUGIN_H_ @}*/