se adiciona experimental/facho-wasm para crear wasm de firmado para facturacion electronica

FossilOrigin-Name: f5823c4b16ec6f81eaf92676dfe4a2bee3edc150ce3485ffcd8732c2c4284e5b

experimental/facho-wasm/xmlsec-wasm/examples/README.md

@@ -0,0 +1,6 @@
+# ejemplo
+
+~~~
+$ bash build.sh
+$ wasirun ./a.out sign1-tmpl.xml example.key
+~~~

experimental/facho-wasm/xmlsec-wasm/examples/build.sh

@@ -0,0 +1,12 @@
+cp ../vendor/openssl/lib/*.a .
+cp ../xmlsec1-1.2.33/src/.libs/*.a .
+cp ../xmlsec1-1.2.33/src/openssl/.libs/*.a .
+cp ../libxml2/.libs/libxml2.a .
+
+mkdir -p include
+
+cp -r ../libxml2/include/libxml include/
+cp -r ../xmlsec1-1.2.33/include/xmlsec include/
+cp -r ../vendor/openssl/include/* include/
+
+wasicc -Iinclude libxml2.a libcrypto.a libssl.a libxmlsec1.a libxmlsec1-openssl.a sign.c 

experimental/facho-wasm/xmlsec-wasm/examples/sign.c

@@ -0,0 +1,216 @@
+/** 
+ * XML Security Library example: Signing a template file.
+ * 
+ * Signs a template file using a key from PEM file
+ * 
+ * Usage: 
+ *      ./sign1 <xml-tmpl> <pem-key> 
+ *
+ * Example:
+ *      ./sign1 sign1-tmpl.xml rsakey.pem > sign1-res.xml
+ *
+ * The result signature could be validated using verify1 example:
+ *      ./verify1 sign1-res.xml rsapub.pem
+ *
+ * This is free software; see Copyright file in the source
+ * distribution for preciese wording.
+ * 
+ * Copyright (C) 2002-2016 Aleksey Sanin <aleksey@aleksey.com>. All Rights Reserved.
+ */
+#include <stdlib.h>
+#include <string.h>
+#include <assert.h>
+
+#include <libxml/tree.h>
+#include <libxml/xmlmemory.h>
+#include <libxml/parser.h>
+
+#define XMLSEC_NO_XSLT
+#define XMLSEC_CRYPTO_OPENSSL
+
+#ifndef XMLSEC_NO_XSLT
+#include <libxslt/xslt.h>
+#include <libxslt/security.h>
+#endif /* XMLSEC_NO_XSLT */
+
+#include <xmlsec/xmlsec.h>
+#include <xmlsec/xmltree.h>
+#include <xmlsec/xmldsig.h>
+#include <xmlsec/crypto.h>
+
+int sign_file(const char* tmpl_file, const char* key_file);
+
+int 
+main(int argc, char **argv) {
+#ifndef XMLSEC_NO_XSLT
+    xsltSecurityPrefsPtr xsltSecPrefs = NULL;
+#endif /* XMLSEC_NO_XSLT */
+	setenv("RANDFILE", "/dev/random", 1);
+    assert(argv);
+
+    if(argc != 3) {
+        fprintf(stderr, "Error: wrong number of arguments.\n");
+        fprintf(stderr, "Usage: %s <tmpl-file> <key-file>\n", argv[0]);
+        return(1);
+    }
+
+    printf("template %s key %s\n", argv[1], argv[2]);
+    /* Init libxml and libxslt libraries */
+    xmlInitParser();
+    LIBXML_TEST_VERSION
+    xmlLoadExtDtdDefaultValue = XML_DETECT_IDS | XML_COMPLETE_ATTRS;
+    xmlSubstituteEntitiesDefault(1);
+#ifndef XMLSEC_NO_XSLT
+    xmlIndentTreeOutput = 1; 
+#endif /* XMLSEC_NO_XSLT */
+
+    /* Init libxslt */
+#ifndef XMLSEC_NO_XSLT
+    /* disable everything */
+    xsltSecPrefs = xsltNewSecurityPrefs(); 
+    xsltSetSecurityPrefs(xsltSecPrefs,  XSLT_SECPREF_READ_FILE,        xsltSecurityForbid);
+    xsltSetSecurityPrefs(xsltSecPrefs,  XSLT_SECPREF_WRITE_FILE,       xsltSecurityForbid);
+    xsltSetSecurityPrefs(xsltSecPrefs,  XSLT_SECPREF_CREATE_DIRECTORY, xsltSecurityForbid);
+    xsltSetSecurityPrefs(xsltSecPrefs,  XSLT_SECPREF_READ_NETWORK,     xsltSecurityForbid);
+    xsltSetSecurityPrefs(xsltSecPrefs,  XSLT_SECPREF_WRITE_NETWORK,    xsltSecurityForbid);
+    xsltSetDefaultSecurityPrefs(xsltSecPrefs); 
+#endif /* XMLSEC_NO_XSLT */                
+
+    /* Init xmlsec library */
+    if(xmlSecInit() < 0) {
+        fprintf(stderr, "Error: xmlsec initialization failed.\n");
+        return(-1);
+    }
+	puts("done xmlSecInit");
+
+    /* Check loaded library version */
+    if(xmlSecCheckVersion() != 1) {
+        fprintf(stderr, "Error: loaded xmlsec library version is not compatible.\n");
+        return(-1);
+    }
+	puts("done xmlSecCheckVersion");
+    /* Load default crypto engine if we are supporting dynamic
+     * loading for xmlsec-crypto libraries. Use the crypto library
+     * name ("openssl", "nss", etc.) to load corresponding 
+     * xmlsec-crypto library.
+     */
+#ifdef XMLSEC_CRYPTO_DYNAMIC_LOADING
+    if(xmlSecCryptoDLLoadLibrary(NULL) < 0) {
+        fprintf(stderr, "Error: unable to load default xmlsec-crypto library. Make sure\n"
+                        "that you have it installed and check shared libraries path\n"
+                        "(LD_LIBRARY_PATH and/or LTDL_LIBRARY_PATH) environment variables.\n");
+        return(-1);     
+    }
+#endif /* XMLSEC_CRYPTO_DYNAMIC_LOADING */
+
+    /* Init crypto library */
+    if(xmlSecCryptoAppInit(NULL) < 0) {
+        fprintf(stderr, "Error: crypto initialization failed.\n");
+        return(-1);
+    }
+puts("done xmlSecCryptoAppInit");
+    /* Init xmlsec-crypto library */
+    if(xmlSecCryptoInit() < 0) {
+        fprintf(stderr, "Error: xmlsec-crypto initialization failed.\n");
+        return(-1);
+    }
+puts("done xmlSecCryptoInit");
+    if(sign_file(argv[1], argv[2]) < 0) {
+        return(-1);
+    }    
+    
+    /* Shutdown xmlsec-crypto library */
+    xmlSecCryptoShutdown();
+    
+    /* Shutdown crypto library */
+    xmlSecCryptoAppShutdown();
+    
+    /* Shutdown xmlsec library */
+    xmlSecShutdown();
+
+    /* Shutdown libxslt/libxml */
+#ifndef XMLSEC_NO_XSLT
+    xsltFreeSecurityPrefs(xsltSecPrefs);
+    xsltCleanupGlobals();
+#endif /* XMLSEC_NO_XSLT */
+    xmlCleanupParser();
+    
+    return(0);
+}
+
+/** 
+ * sign_file:
+ * @tmpl_file:          the signature template file name.
+ * @key_file:           the PEM private key file name.
+ *
+ * Signs the #tmpl_file using private key from #key_file.
+ *
+ * Returns 0 on success or a negative value if an error occurs.
+ */
+int 
+sign_file(const char* tmpl_file, const char* key_file) {
+    xmlDocPtr doc = NULL;
+    xmlNodePtr node = NULL;
+    xmlSecDSigCtxPtr dsigCtx = NULL;
+    int res = -1;
+    
+    assert(tmpl_file);
+    assert(key_file);
+
+    /* load template */
+    doc = xmlParseFile(tmpl_file);
+    if ((doc == NULL) || (xmlDocGetRootElement(doc) == NULL)){
+        fprintf(stderr, "Error: unable to parse file \"%s\"\n", tmpl_file);
+        goto done;      
+    }
+    
+    /* find start node */
+    node = xmlSecFindNode(xmlDocGetRootElement(doc), xmlSecNodeSignature, xmlSecDSigNs);
+    if(node == NULL) {
+        fprintf(stderr, "Error: start node not found in \"%s\"\n", tmpl_file);
+        goto done;      
+    }
+
+    /* create signature context, we don't need keys manager in this example */
+    dsigCtx = xmlSecDSigCtxCreate(NULL);
+    if(dsigCtx == NULL) {
+        fprintf(stderr,"Error: failed to create signature context\n");
+        goto done;
+    }
+
+    /* load private key, assuming that there is not password */
+    dsigCtx->signKey = xmlSecCryptoAppKeyLoad(key_file, xmlSecKeyDataFormatPem, NULL, NULL, NULL);
+    if(dsigCtx->signKey == NULL) {
+        fprintf(stderr,"Error: failed to load private pem key from \"%s\"\n", key_file);
+        goto done;
+    }
+
+    /* set key name to the file name, this is just an example! */
+    if(xmlSecKeySetName(dsigCtx->signKey, key_file) < 0) {
+        fprintf(stderr,"Error: failed to set key name for key from \"%s\"\n", key_file);
+        goto done;
+    }
+
+    /* sign the template */
+    if(xmlSecDSigCtxSign(dsigCtx, node) < 0) {
+        fprintf(stderr,"Error: signature failed\n");
+        goto done;
+    }
+        
+    /* print signed document to stdout */
+    xmlDocDump(stdout, doc);
+    
+    /* success */
+    res = 0;
+
+done:    
+    /* cleanup */
+    if(dsigCtx != NULL) {
+        xmlSecDSigCtxDestroy(dsigCtx);
+    }
+    
+    if(doc != NULL) {
+        xmlFreeDoc(doc); 
+    }
+    return(res);
+}

experimental/facho-wasm/xmlsec-wasm/examples/sign1-tmpl.xml

@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!-- 
+XML Security Library example: Simple signature template file for sign1 example. 
+-->
+<Envelope xmlns="urn:envelope">
+  <Data>
+	Hello, World!
+  </Data>
+  <Signature xmlns="http://www.w3.org/2000/09/xmldsig#">
+    <SignedInfo>
+      <CanonicalizationMethod Algorithm="http://www.w3.org/TR/2001/REC-xml-c14n-20010315" />
+      <SignatureMethod Algorithm="http://www.w3.org/2000/09/xmldsig#rsa-sha1" />
+      <Reference URI="">
+        <Transforms>
+          <Transform Algorithm="http://www.w3.org/2000/09/xmldsig#enveloped-signature" />
+        </Transforms>
+        <DigestMethod Algorithm="http://www.w3.org/2000/09/xmldsig#sha1" />
+        <DigestValue></DigestValue>
+      </Reference>
+    </SignedInfo>
+    <SignatureValue/>
+    <KeyInfo>
+	<KeyName/>
+    </KeyInfo>
+  </Signature>
+</Envelope>
+