vauth: Moved Curl_sasl_build_spn() to create the initial vauth source files

2 files changed, 144 insertions, 0 deletions

diff --git a/lib/vauth/vauth.c b/lib/vauth/vauth.c
new file mode 100644
index 000000000..38a9c793a
--- /dev/null
+++ b/lib/vauth/vauth.c
@@ -0,0 +1,106 @@
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ \| |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
+ *                             \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) 2014 - 2015, Steve Holme, <steve_holme@hotmail.com>.
+ *
+ * This software is licensed as described in the file COPYING, which
+ * you should have received as part of this distribution. The terms
+ * are also available at http://curl.haxx.se/docs/copyright.html.
+ *
+ * You may opt to use, copy, modify, merge, publish, distribute and/or sell
+ * copies of the Software, and permit persons to whom the Software is
+ * furnished to do so, under the terms of the COPYING file.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ***************************************************************************/
+
+#include "curl_setup.h"
+
+#include <curl/curl.h>
+
+#include "vauth.h"
+#include "curl_multibyte.h"
+#include "curl_printf.h"
+
+/* The last #include files should be: */
+#include "curl_memory.h"
+#include "memdebug.h"
+
+/*
+ * Curl_sasl_build_spn()
+ *
+ * This is used to build a SPN string in the format service/instance.
+ *
+ * Parameters:
+ *
+ * service  [in] - The service type such as www, smtp, pop or imap.
+ * instance [in] - The host name or realm.
+ *
+ * Returns a pointer to the newly allocated SPN.
+ */
+#if !defined(USE_WINDOWS_SSPI)
+char *Curl_sasl_build_spn(const char *service, const char *instance)
+{
+  /* Generate and return our SPN */
+  return aprintf("%s/%s", service, instance);
+}
+#else
+TCHAR *Curl_sasl_build_spn(const char *service, const char *instance)
+{
+  char *utf8_spn = NULL;
+  TCHAR *tchar_spn = NULL;
+
+  /* Note: We could use DsMakeSPN() or DsClientMakeSpnForTargetServer() rather
+     than doing this ourselves but the first is only available in Windows XP
+     and Windows Server 2003 and the latter is only available in Windows 2000
+     but not Windows95/98/ME or Windows NT4.0 unless the Active Directory
+     Client Extensions are installed. As such it is far simpler for us to
+     formulate the SPN instead. */
+
+  /* Allocate our UTF8 based SPN */
+  utf8_spn = aprintf("%s/%s", service, instance);
+  if(!utf8_spn) {
+    return NULL;
+  }
+
+  /* Allocate our TCHAR based SPN */
+  tchar_spn = Curl_convert_UTF8_to_tchar(utf8_spn);
+  if(!tchar_spn) {
+    free(utf8_spn);
+
+    return NULL;
+  }
+
+  /* Release the UTF8 variant when operating with Unicode */
+  Curl_unicodefree(utf8_spn);
+
+  /* Return our newly allocated SPN */
+  return tchar_spn;
+}
+#endif /* USE_WINDOWS_SSPI */
+
+#if defined(HAVE_GSSAPI)
+/*
+ * Curl_sasl_build_gssapi_spn()
+ *
+ * This is used to build a SPN string in the format service@instance.
+ *
+ * Parameters:
+ *
+ * service  [in] - The service type such as www, smtp, pop or imap.
+ * instance [in] - The host name or realm.
+ *
+ * Returns a pointer to the newly allocated SPN.
+ */
+char *Curl_sasl_build_gssapi_spn(const char *service, const char *instance)
+{
+  /* Generate and return our SPN */
+  return aprintf("%s@%s", service, instance);
+}
+#endif /* HAVE_GSSAPI */
diff --git a/lib/vauth/vauth.h b/lib/vauth/vauth.h
new file mode 100644
index 000000000..d0961e5a7
--- /dev/null
+++ b/lib/vauth/vauth.h
@@ -0,0 +1,38 @@
+#ifndef HEADER_CURL_VAUTH_H
+#define HEADER_CURL_VAUTH_H
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ \| |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
+ *                             \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) 2014 - 2015, Steve Holme, <steve_holme@hotmail.com>.
+ *
+ * This software is licensed as described in the file COPYING, which
+ * you should have received as part of this distribution. The terms
+ * are also available at http://curl.haxx.se/docs/copyright.html.
+ *
+ * You may opt to use, copy, modify, merge, publish, distribute and/or sell
+ * copies of the Software, and permit persons to whom the Software is
+ * furnished to do so, under the terms of the COPYING file.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ***************************************************************************/
+
+#include <curl/curl.h>
+
+/* This is used to build a SPN string */
+#if !defined(USE_WINDOWS_SSPI)
+char *Curl_sasl_build_spn(const char *service, const char *instance);
+#else
+TCHAR *Curl_sasl_build_spn(const char *service, const char *instance);
+#endif
+
+#if defined(HAVE_GSSAPI)
+char *Curl_sasl_build_gssapi_spn(const char *service, const char *instance);
+#endif
+
+#endif /* HEADER_CURL_VAUTH_H */