refactoring sources

Change-Id: Id6d52eee86b706958972e9b345ec0d4d1e488146
Signed-off-by: José Bollo <jose.bollo@iot.bzh>

1 files changed, 0 insertions, 358 deletions

diff --git a/wgtpkg-digsig.c b/wgtpkg-digsig.c
deleted file mode 100644
index 284acd1..0000000
--- a/wgtpkg-digsig.c
+++ /dev/null
@@ -1,358 +0,0 @@
-/*
- Copyright 2015 IoT.bzh
-
- Licensed under the Apache License, Version 2.0 (the "License");
- you may not use this file except in compliance with the License.
- You may obtain a copy of the License at
-
-     http://www.apache.org/licenses/LICENSE-2.0
-
- Unless required by applicable law or agreed to in writing, software
- distributed under the License is distributed on an "AS IS" BASIS,
- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- See the License for the specific language governing permissions and
- limitations under the License.
-*/
-
-
-#include <string.h>
-#include <syslog.h>
-#include <assert.h>
-
-#include <libxml/parser.h>
-#include <libxml/tree.h>
-#include <libxml/uri.h>
-
-
-#include "wgtpkg.h"
-
-
-
-static const char uri_role_author[] = "http://www.w3.org/ns/widgets-digsig#role-author";
-static const char uri_role_distributor[] = "http://www.w3.org/ns/widgets-digsig#role-distributor";
-static const char uri_profile[] = "http://www.w3.org/ns/widgets-digsig#profile";
-
-
-/* global data */
-static xmlDocPtr document;  /* the document */
-
-/* facility to get the first element node (skip text nodes) starting with 'node' */
-static xmlNodePtr next_element(xmlNodePtr node)
-{
-	while (node && node->type != XML_ELEMENT_NODE)
-		node = node->next;
-	return node;
-}
-
-/* is the 'node' an element node of 'name'? */
-static int is_element(xmlNodePtr node, const char *name)
-{
-	return node->type == XML_ELEMENT_NODE
-		&& !strcmp(name, node->name);
-}
-
-/* is the 'node' an element node of 'name'? */
-static int is_node(xmlNodePtr node, const char *name)
-{
-	return node != NULL && is_element(node, name);
-}
-
-#if 0
-/* facility to get the first element node (skip text nodes) starting with 'node' */
-static xmlNodePtr next_element_type(xmlNodePtr node, const char *name)
-{
-	while (node && node->type != XML_ELEMENT_NODE && strcmp(name, node->name))
-		node = node->next;
-	return node;
-}
-
-/* search the element node of id. NOTE : not optimized at all */
-static xmlNodePtr search_for(const char *attrname, const char *value)
-{
-	char *val;
-	xmlNodePtr iter, next;
-	xmlNodePtr result;
-
-	result = NULL;
-	iter = xmlDocGetRootElement(document);
-	while (iter != NULL) {
-		val = xmlGetProp(iter, attrname);
-		if (val != NULL && !strcmp(val, value)) {
-			if (result != NULL) {
-				syslog(LOG_ERR, "duplicated %s %s", attrname, value);
-				free(val);
-				return NULL;
-			}
-			result = iter;
-		}
-		free(val);
-		next = next_element(iter->children);
-		if (next == NULL) {
-			/* no child, try sibling */
-			next = next_element(iter->next);
-			if (next == NULL) {
-				iter = iter->parent;
-				while (iter != NULL && next == NULL) {
-					next = next_element(iter->next);
-					iter = iter->parent;
-				}
-			}
-		}
-		iter = next;
-	}
-	if (result == NULL)
-		syslog(LOG_ERR, "node of %s '%s' not found", attrname, value);
-	return result;
-}
-
-/* search the element node of id. NOTE : not optimized at all */
-static xmlNodePtr search_id(const char *id)
-{
-	return search_for("Id", id);
-}
-#endif
-
-/* check the digest of one element */
-static int check_one_reference(xmlNodePtr ref)
-{
-	int rc;
-	char *uri;
-	xmlURIPtr u;
-	struct filedesc *fdesc;
-
-	/* start */
-	rc = -1;
-
-	/* get the uri */
-	uri = xmlGetProp(ref, "URI");
-	if (uri == NULL) {
-		syslog(LOG_ERR, "attribute URI of element <Reference> not found");
-		goto error;
-	}
-
-	/* parse the uri */
-	u = xmlParseURI(uri);
-	if (!u) {
-		syslog(LOG_ERR, "error while parsing URI %s", uri);
-		goto error2;
-	}
-
-	/* check that unexpected parts are not there */
-	if (u->scheme || u->opaque || u->authority || u->server || u->user || u->query) {
-		syslog(LOG_ERR, "unexpected uri component in %s", uri);
-		goto error3;
-	}
-
-	/* check path and fragment */
-	if (!u->path && !u->fragment) {
-		syslog(LOG_ERR, "invalid uri %s", uri);
-		goto error3;
-	}
-	if (u->path && u->fragment) {
-		syslog(LOG_ERR, "not allowed to sign foreign fragment in %s", uri);
-		goto error3;
-	}
-
-	if (u->path) {
-		/* check that the path is valid */
-		fdesc = file_of_name(u->path);
-		if (fdesc == NULL) {
-			syslog(LOG_ERR, "reference to unknown file %s", u->path);
-			goto error3;
-		}
-		if (fdesc->type != type_file) {
-			syslog(LOG_ERR, "reference to directory %s", u->path);
-			goto error3;
-		}
-		if ((fdesc->flags & flag_distributor_signature) != 0) {
-			syslog(LOG_ERR, "reference to signature %s", u->path);
-			goto error3;
-		}
-		fdesc->flags |= flag_referenced;
-		rc = 0;
-	} else {
-		rc = 0;
-	}
-
-error3:
-	xmlFreeURI(u);
-error2:
-	xmlFree(uri);
-error:
-	return rc;
-}
-
-static int check_references(xmlNodePtr sinfo)
-{
-	xmlNodePtr elem;
-
-	elem = sinfo->children;
-	while (elem != NULL) {
-		if (is_element(elem, "Reference"))
-			if (check_one_reference(elem))
-				return -1;
-		elem = elem->next;
-	}
-	return 0;
-}
-
-static int get_certificates(xmlNodePtr kinfo)
-{
-	xmlNodePtr n1, n2;
-	char *b;
-	int rc;
-
-	n1 = kinfo->children;
-	while (n1) {
-		if (is_element(n1, "X509Data")) {
-			n2 = n1->children;
-			while (n2) {
-				if (is_element(n2, "X509Certificate")) {
-					b = xmlNodeGetContent(n2);
-					if (b == NULL) {
-						syslog(LOG_ERR, "xmlNodeGetContent of X509Certificate failed");
-						return -1;
-					}
-					rc = add_certificate_b64(b);
-					xmlFree(b);
-					if (rc)
-						return rc;
-				}
-				n2 = n2->next;
-			}
-		}
-		n1 = n1->next;
-	}
-	return 0;
-}
-
-/* checks the current document */
-static int checkdocument()
-{
-	int rc;
-	xmlNodePtr sinfo, svalue, kinfo, objs, rootsig;
-
-	rc = -1;
-
-	rootsig = xmlDocGetRootElement(document);
-	if (!is_node(rootsig, "Signature")) {
-		syslog(LOG_ERR, "root element <Signature> not found");
-		goto error;
-	}
-
-	sinfo = next_element(rootsig->children);
-	if (!is_node(sinfo, "SignedInfo")) {
-		syslog(LOG_ERR, "element <SignedInfo> not found");
-		goto error;
-	}
-
-	svalue = next_element(sinfo->next);
-	if (!is_node(svalue, "SignatureValue")) {
-		syslog(LOG_ERR, "element <SignatureValue> not found");
-		goto error;
-	}
-
-	kinfo = next_element(svalue->next);
-	if (is_node(kinfo, "KeyInfo")) {
-		objs = kinfo->next;
-	} else {
-		objs = kinfo;
-		kinfo = NULL;
-	}
-
-	rc = check_references(sinfo);
-	if (rc)
-		goto error;
-
-	rc = xmlsec_verify(rootsig);
-	if (rc)
-		goto error;
-
-	rc = get_certificates(kinfo);
-
-error:
-	return rc;
-}
-
-/* verify the digital signature of the file described by 'fdesc' */
-int verify_digsig(struct filedesc *fdesc)
-{
-	int res;
-
-	assert ((fdesc->flags & flag_signature) != 0);
-	debug("-- checking file %s",fdesc->name);
-
-	/* reset the flags */
-	file_clear_flags();
-	clear_certificates();
-
-	/* reads and xml parses the signature file */
-	document = xmlReadFile(fdesc->name, NULL, 0);
-	if (document == NULL) {
-		syslog(LOG_ERR, "xml parse of file %s failed", fdesc->name);
-		return -1;
-	}
-
-	res = checkdocument();
-	if (res)
-		syslog(LOG_ERR, "previous error was during check of file %s", fdesc->name);
-
-	xmlFreeDoc(document);
-	return res;
-}
-
-/* check all the signature files */
-int check_all_signatures()
-{
-	int rc, irc;
-	unsigned int i, n;
-	struct filedesc *fdesc;
-
-	n = signature_count();
-	rc = 0;
-	for (i = n ; i-- > 0 ; ) {
-		fdesc = signature_of_index(i);
-		irc = verify_digsig(fdesc);
-		if (!irc)
-			rc = irc;
-	}
-
-	return rc;
-}
-
-/* create a signature of 'index' (0 for author, other values for distributors)
-using the private 'key' (filename) and the certificates 'certs' (filenames)
-as trusted chain */
-int create_digsig(int index, const char *key, const char **certs)
-{
-	struct filedesc *fdesc;
-	xmlDocPtr doc;
-	int rc, len;
-
-	rc = -1;
-
-	/* create the doc */
-	doc = xmlsec_create(index, key, certs);
-	if (doc == NULL)
-		goto error;
-
-	/* instanciate the filename */
-	fdesc = create_signature(index);
-	if (fdesc == NULL)
-		goto error2;
-
-	/* save the doc as file */
-	len = xmlSaveFormatFileEnc(fdesc->name, doc, NULL, 0);
-	if (len < 0) {
-		syslog(LOG_ERR, "xmlSaveFormatFileEnc to %s failed", fdesc->name);
-		goto error2;
-	}
-
-	rc = 0;
-error2:
-	xmlFreeDoc(doc);
-error:
-	return rc;
-}
-
-