Initial revision

1 files changed, 144 insertions, 0 deletions

diff --git a/lasso/lasso.c b/lasso/lasso.c
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+/* $Id$
+ *
+ * Lasso - A free implementation of the Liberty Alliance specifications.
+ *
+ * Copyright (C) 2004 Entr'ouvert
+ * http://lasso.entrouvert.org
+ * 
+ * Author: Valery Febvre <vfebvre@easter-eggs.com>
+ *
+ * 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.
+ * 
+ * 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.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include "lasso.h"
+
+/**
+ * lasso_init:
+ *
+ * Initializes Lasso library
+ *
+ * Returns 0 on success or a negative value otherwise.
+ */
+int lasso_init()
+{
+  g_type_init();
+
+  /* Init libxml and libxslt libraries */
+  xmlInitParser();
+  LIBXML_TEST_VERSION
+    xmlLoadExtDtdDefaultValue = XML_DETECT_IDS | XML_COMPLETE_ATTRS;
+  xmlSubstituteEntitiesDefault(1);
+	
+  /* Init xmlsec library */
+  if(xmlSecInit() < 0) {
+    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);
+  }
+
+  /* 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(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);	
+  }
+#endif /* XMLSEC_CRYPTO_DYNAMIC_LOADING */
+
+  /* Init crypto library */
+  if(xmlSecCryptoAppInit(NULL) < 0) {
+    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);
+  }
+  return 0;
+}
+
+void lasso_shutdown()
+{
+  /* Shutdown xmlsec-crypto library */
+  xmlSecCryptoShutdown();
+  
+  /* Shutdown crypto library */
+  xmlSecCryptoAppShutdown();
+  
+  /* Shutdown xmlsec library */
+  xmlSecShutdown();
+  
+  /* Shutdown libxslt/libxml */
+#ifndef XMLSEC_NO_XSLT
+  xsltCleanupGlobals();            
+#endif /* XMLSEC_NO_XSLT */
+  xmlCleanupParser();
+}
+
+/** 
+ * lasso_check_version_ext:
+ * @major:	the major version number.
+ * @minor:	the minor version number.
+ * @subminor:	the subminor version number.
+ * @mode:	the version check mode.
+ *
+ * Checks if the loaded version of Lasso library could be used.
+ *
+ * Returns 1 if the loaded lasso library version is OK to use
+ * 0 if it is not or a negative value if an error occurs.
+ */
+int 
+lasso_check_version_ext(int major, int minor, int subminor, lassoCheckVersionMode mode) {
+  /* we always want to have a match for major version number */
+  if(major != LASSO_VERSION_MAJOR) {
+    g_message("expected major version=%d;real major version=%d",
+	      LASSO_VERSION_MAJOR, major);
+    return(0);
+  }
+  
+  switch(mode) {
+  case lassoCheckVersionExact:
+    if((minor != LASSO_VERSION_MINOR) || (subminor != LASSO_VERSION_SUBMINOR)) {
+      g_message("mode=exact;expected minor version=%d;real minor version=%d;expected subminor version=%d;real subminor version=%d",
+		LASSO_VERSION_MINOR, minor,
+		LASSO_VERSION_SUBMINOR, subminor);
+      return(0);
+    }
+    break;
+  case lassoCheckVersionABICompatible:
+    if((minor < LASSO_VERSION_MINOR) ||
+       ((minor == LASSO_VERSION_MINOR) && (subminor < LASSO_VERSION_SUBMINOR))) {
+      g_message("mode=abi compatible;expected minor version=%d;real minor version=%d;expected subminor version=%d;real subminor version=%d",
+		LASSO_VERSION_MINOR, minor,
+		LASSO_VERSION_SUBMINOR, subminor);
+      return(0);
+    }
+    break;
+  }
+  
+  return(1);
+}