1 files changed, 127 insertions, 0 deletions
diff --git a/plugin/auth_gssapi/gssapi_client.cc b/plugin/auth_gssapi/gssapi_client.cc
new file mode 100644
index 00000000..a05ea158
--- /dev/null
+++ b/plugin/auth_gssapi/gssapi_client.cc
@@ -0,0 +1,127 @@
+/* Copyright (c) 2015, Shuang Qiu, Robbie Harwood,
+Vladislav Vaintroub & MariaDB Corporation
+
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+1. Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+
+2. Redistributions in binary form must reproduce the above copyright notice,
+this list of conditions and the following disclaimer in the documentation
+and/or other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#include <gssapi/gssapi.h>
+#include <string.h>
+#include <stdio.h>
+#include <mysql/plugin_auth.h>
+#include <mysqld_error.h>
+#include <mysql.h>
+#include "gssapi_errmsg.h"
+
+extern void log_client_error(MYSQL *mysql,const char *fmt,...);
+
+
+/* This sends the error to the client */
+static void log_error(MYSQL *mysql, OM_uint32 major, OM_uint32 minor, const char *msg)
+{
+  if (GSS_ERROR(major))
+  {
+    char sysmsg[1024];
+    gssapi_errmsg(major, minor, sysmsg, sizeof(sysmsg));
+    log_client_error(mysql,
+      "Client GSSAPI error (major %u, minor %u) : %s - %s",
+       major, minor, msg, sysmsg);
+  }
+  else
+  {
+    log_client_error(mysql, "Client GSSAPI error : %s", msg);
+  }
+}
+
+int auth_client(char *principal_name, char *mech, MYSQL *mysql, MYSQL_PLUGIN_VIO *vio)
+{
+
+  int ret= CR_ERROR;
+  OM_uint32 major= 0, minor= 0;
+  gss_ctx_id_t ctxt= GSS_C_NO_CONTEXT;
+  gss_name_t service_name= GSS_C_NO_NAME;
+
+  if (principal_name && principal_name[0])
+  {
+    /* import principal from plain text */
+    gss_buffer_desc principal_name_buf;
+    principal_name_buf.length= strlen(principal_name);
+    principal_name_buf.value= (void *) principal_name;
+    major= gss_import_name(&minor, &principal_name_buf, GSS_C_NT_USER_NAME, &service_name);
+    if (GSS_ERROR(major))
+    {
+      log_error(mysql, major, minor, "gss_import_name");
+      return CR_ERROR;
+    }
+  }
+
+  gss_buffer_desc input= {0,0};
+  do
+  {
+    gss_buffer_desc output= {0,0};
+    major= gss_init_sec_context(&minor, GSS_C_NO_CREDENTIAL, &ctxt, service_name,
+                                GSS_C_NO_OID, 0, 0, GSS_C_NO_CHANNEL_BINDINGS,
+                                &input, NULL, &output, NULL, NULL);
+    if (output.length)
+    {
+      /* send credential */
+      if(vio->write_packet(vio, (unsigned char *)output.value, output.length))
+      {
+        /* Server error packet contains detailed message. */
+        ret= CR_OK_HANDSHAKE_COMPLETE;
+        gss_release_buffer (&minor, &output);
+        goto cleanup;
+      }
+    }
+    gss_release_buffer (&minor, &output);
+
+    if (GSS_ERROR(major))
+    {
+       log_error(mysql, major, minor,"gss_init_sec_context");
+       goto cleanup;
+    }
+
+    if (major & GSS_S_CONTINUE_NEEDED)
+    {
+      int len= vio->read_packet(vio, (unsigned char **) &input.value);
+      if (len <= 0)
+      {
+        /* Server error packet contains detailed message. */
+        ret= CR_OK_HANDSHAKE_COMPLETE;
+        goto cleanup;
+      }
+      input.length= len;
+    }
+  } while (major & GSS_S_CONTINUE_NEEDED);
+
+  ret= CR_OK;
+
+cleanup:
+  if (service_name != GSS_C_NO_NAME)
+    gss_release_name(&minor, &service_name);
+  if (ctxt != GSS_C_NO_CONTEXT)
+    gss_delete_sec_context(&minor, &ctxt, GSS_C_NO_BUFFER);
+
+  return ret;
+}