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-rw-r--r--examples/decrypt2.c164
1 files changed, 91 insertions, 73 deletions
diff --git a/examples/decrypt2.c b/examples/decrypt2.c
index 051cbf97..49513e12 100644
--- a/examples/decrypt2.c
+++ b/examples/decrypt2.c
@@ -5,11 +5,11 @@
* DES key from a binary file
*
* Usage:
- * ./decrypt2 <xml-enc> <des-key-file1> [<des-key-file2> [...]]
+ * ./decrypt2 <xml-enc> <des-key-file1> [<des-key-file2> [...]]
*
* Example:
- * ./decrypt2 encrypt1-res.xml deskey.bin
- * ./decrypt2 encrypt2-res.xml deskey.bin
+ * ./decrypt2 encrypt1-res.xml deskey.bin
+ * ./decrypt2 encrypt2-res.xml deskey.bin
*
* This is free software; see Copyright file in the source
* distribution for preciese wording.
@@ -26,6 +26,7 @@
#ifndef XMLSEC_NO_XSLT
#include <libxslt/xslt.h>
+#include <libxslt/security.h>
#endif /* XMLSEC_NO_XSLT */
#include <xmlsec/xmlsec.h>
@@ -39,13 +40,16 @@ int decrypt_file(xmlSecKeysMngrPtr mngr, const char* enc_file);
int
main(int argc, char **argv) {
xmlSecKeysMngrPtr mngr;
+#ifndef XMLSEC_NO_XSLT
+ xsltSecurityPrefsPtr xsltSecPrefs = NULL;
+#endif /* XMLSEC_NO_XSLT */
assert(argv);
if(argc != 3) {
- fprintf(stderr, "Error: wrong number of arguments.\n");
- fprintf(stderr, "Usage: %s <enc-file> <key-file1> [<key-file2> [...]]\n", argv[0]);
- return(1);
+ fprintf(stderr, "Error: wrong number of arguments.\n");
+ fprintf(stderr, "Usage: %s <enc-file> <key-file1> [<key-file2> [...]]\n", argv[0]);
+ return(1);
}
/* Init libxml and libxslt libraries */
@@ -56,17 +60,30 @@ main(int argc, char **argv) {
#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);
+ fprintf(stderr, "Error: xmlsec initialization failed.\n");
+ return(-1);
}
/* Check loaded library version */
if(xmlSecCheckVersion() != 1) {
- fprintf(stderr, "Error: loaded xmlsec library version is not compatible.\n");
- return(-1);
+ fprintf(stderr, "Error: loaded xmlsec library version is not compatible.\n");
+ return(-1);
}
/* Load default crypto engine if we are supporting dynamic
@@ -76,34 +93,34 @@ main(int argc, char **argv) {
*/
#ifdef XMLSEC_CRYPTO_DYNAMIC_LOADING
if(xmlSecCryptoDLLoadLibrary(BAD_CAST XMLSEC_CRYPTO) < 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) envornment variable.\n");
- return(-1);
+ 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) envornment variable.\n");
+ return(-1);
}
#endif /* XMLSEC_CRYPTO_DYNAMIC_LOADING */
/* Init crypto library */
if(xmlSecCryptoAppInit(NULL) < 0) {
- fprintf(stderr, "Error: crypto initialization failed.\n");
- return(-1);
+ fprintf(stderr, "Error: crypto initialization failed.\n");
+ return(-1);
}
/* Init xmlsec-crypto library */
if(xmlSecCryptoInit() < 0) {
- fprintf(stderr, "Error: xmlsec-crypto initialization failed.\n");
- return(-1);
+ fprintf(stderr, "Error: xmlsec-crypto initialization failed.\n");
+ return(-1);
}
/* create keys manager and load keys */
mngr = load_des_keys(&(argv[2]), argc - 2);
if(mngr == NULL) {
- return(-1);
+ return(-1);
}
if(decrypt_file(mngr, argv[1]) < 0) {
- xmlSecKeysMngrDestroy(mngr);
- return(-1);
+ xmlSecKeysMngrDestroy(mngr);
+ return(-1);
}
/* destroy keys manager */
@@ -120,6 +137,7 @@ main(int argc, char **argv) {
/* Shutdown libxslt/libxml */
#ifndef XMLSEC_NO_XSLT
+ xsltFreeSecurityPrefs(xsltSecPrefs);
xsltCleanupGlobals();
#endif /* XMLSEC_NO_XSLT */
xmlCleanupParser();
@@ -129,8 +147,8 @@ main(int argc, char **argv) {
/**
* load_des_keys:
- * @files: the list of filenames.
- * @files_size: the number of filenames in #files.
+ * @files: the list of filenames.
+ * @files_size: the number of filenames in #files.
*
* Creates simple keys manager and load DES keys from #files in it.
* The caller is responsible for destroing returned keys manager using
@@ -154,43 +172,43 @@ load_des_keys(char** files, int files_size) {
*/
mngr = xmlSecKeysMngrCreate();
if(mngr == NULL) {
- fprintf(stderr, "Error: failed to create keys manager.\n");
- return(NULL);
+ fprintf(stderr, "Error: failed to create keys manager.\n");
+ return(NULL);
}
if(xmlSecCryptoAppDefaultKeysMngrInit(mngr) < 0) {
- fprintf(stderr, "Error: failed to initialize keys manager.\n");
- xmlSecKeysMngrDestroy(mngr);
- return(NULL);
+ fprintf(stderr, "Error: failed to initialize keys manager.\n");
+ xmlSecKeysMngrDestroy(mngr);
+ return(NULL);
}
for(i = 0; i < files_size; ++i) {
- assert(files[i]);
+ assert(files[i]);
- /* load DES key */
- key = xmlSecKeyReadBinaryFile(xmlSecKeyDataDesId, files[i]);
- if(key == NULL) {
- fprintf(stderr,"Error: failed to load des key from binary file \"%s\"\n", files[i]);
- xmlSecKeysMngrDestroy(mngr);
- return(NULL);
- }
+ /* load DES key */
+ key = xmlSecKeyReadBinaryFile(xmlSecKeyDataDesId, files[i]);
+ if(key == NULL) {
+ fprintf(stderr,"Error: failed to load des key from binary file \"%s\"\n", files[i]);
+ xmlSecKeysMngrDestroy(mngr);
+ return(NULL);
+ }
- /* set key name to the file name, this is just an example! */
- if(xmlSecKeySetName(key, BAD_CAST files[i]) < 0) {
- fprintf(stderr,"Error: failed to set key name for key from \"%s\"\n", files[i]);
- xmlSecKeyDestroy(key);
- xmlSecKeysMngrDestroy(mngr);
- return(NULL);
- }
-
- /* add key to keys manager, from now on keys manager is responsible
- * for destroying key
- */
- if(xmlSecCryptoAppDefaultKeysMngrAdoptKey(mngr, key) < 0) {
- fprintf(stderr,"Error: failed to add key from \"%s\" to keys manager\n", files[i]);
- xmlSecKeyDestroy(key);
- xmlSecKeysMngrDestroy(mngr);
- return(NULL);
- }
+ /* set key name to the file name, this is just an example! */
+ if(xmlSecKeySetName(key, BAD_CAST files[i]) < 0) {
+ fprintf(stderr,"Error: failed to set key name for key from \"%s\"\n", files[i]);
+ xmlSecKeyDestroy(key);
+ xmlSecKeysMngrDestroy(mngr);
+ return(NULL);
+ }
+
+ /* add key to keys manager, from now on keys manager is responsible
+ * for destroying key
+ */
+ if(xmlSecCryptoAppDefaultKeysMngrAdoptKey(mngr, key) < 0) {
+ fprintf(stderr,"Error: failed to add key from \"%s\" to keys manager\n", files[i]);
+ xmlSecKeyDestroy(key);
+ xmlSecKeysMngrDestroy(mngr);
+ return(NULL);
+ }
}
return(mngr);
@@ -198,8 +216,8 @@ load_des_keys(char** files, int files_size) {
/**
* decrypt_file:
- * @mngr: the pointer to keys manager.
- * @enc_file: the encrypted XML file name.
+ * @mngr: the pointer to keys manager.
+ * @enc_file: the encrypted XML file name.
*
* Decrypts the XML file #enc_file using DES key from #key_file and
* prints results to stdout.
@@ -219,42 +237,42 @@ decrypt_file(xmlSecKeysMngrPtr mngr, const char* enc_file) {
/* load template */
doc = xmlParseFile(enc_file);
if ((doc == NULL) || (xmlDocGetRootElement(doc) == NULL)){
- fprintf(stderr, "Error: unable to parse file \"%s\"\n", enc_file);
- goto done;
+ fprintf(stderr, "Error: unable to parse file \"%s\"\n", enc_file);
+ goto done;
}
/* find start node */
node = xmlSecFindNode(xmlDocGetRootElement(doc), xmlSecNodeEncryptedData, xmlSecEncNs);
if(node == NULL) {
- fprintf(stderr, "Error: start node not found in \"%s\"\n", enc_file);
- goto done;
+ fprintf(stderr, "Error: start node not found in \"%s\"\n", enc_file);
+ goto done;
}
/* create encryption context */
encCtx = xmlSecEncCtxCreate(mngr);
if(encCtx == NULL) {
fprintf(stderr,"Error: failed to create encryption context\n");
- goto done;
+ goto done;
}
/* decrypt the data */
if((xmlSecEncCtxDecrypt(encCtx, node) < 0) || (encCtx->result == NULL)) {
fprintf(stderr,"Error: decryption failed\n");
- goto done;
+ goto done;
}
/* print decrypted data to stdout */
if(encCtx->resultReplaced != 0) {
- fprintf(stdout, "Decrypted XML data:\n");
- xmlDocDump(stdout, doc);
+ fprintf(stdout, "Decrypted XML data:\n");
+ xmlDocDump(stdout, doc);
} else {
- fprintf(stdout, "Decrypted binary data (%d bytes):\n", xmlSecBufferGetSize(encCtx->result));
- if(xmlSecBufferGetData(encCtx->result) != NULL) {
- fwrite(xmlSecBufferGetData(encCtx->result),
- 1,
- xmlSecBufferGetSize(encCtx->result),
- stdout);
- }
+ fprintf(stdout, "Decrypted binary data (%d bytes):\n", xmlSecBufferGetSize(encCtx->result));
+ if(xmlSecBufferGetData(encCtx->result) != NULL) {
+ fwrite(xmlSecBufferGetData(encCtx->result),
+ 1,
+ xmlSecBufferGetSize(encCtx->result),
+ stdout);
+ }
}
fprintf(stdout, "\n");
@@ -264,11 +282,11 @@ decrypt_file(xmlSecKeysMngrPtr mngr, const char* enc_file) {
done:
/* cleanup */
if(encCtx != NULL) {
- xmlSecEncCtxDestroy(encCtx);
+ xmlSecEncCtxDestroy(encCtx);
}
if(doc != NULL) {
- xmlFreeDoc(doc);
+ xmlFreeDoc(doc);
}
return(res);
}
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