Move CCAPI sources to krb5 repository

ticket: new
status: open

git-svn-id: svn://anonsvn.mit.edu/krb5/trunk@19564 dc483132-0cff-0310-8789-dd5450dbe970

1 files changed, 333 insertions, 0 deletions

diff --git a/src/ccapi/server/ccs_server.c b/src/ccapi/server/ccs_server.c
new file mode 100644
index 000000000..b7d3be4b1
--- /dev/null
+++ b/src/ccapi/server/ccs_server.c
@@ -0,0 +1,333 @@
+/*
+ * $Header$
+ *
+ * Copyright 2006 Massachusetts Institute of Technology.
+ * All Rights Reserved.
+ *
+ * Export of this software from the United States of America may
+ * require a specific license from the United States Government.
+ * It is the responsibility of any person or organization contemplating
+ * export to obtain such a license before exporting.
+ *
+ * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
+ * distribute this software and its documentation for any purpose and
+ * without fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright notice and
+ * this permission notice appear in supporting documentation, and that
+ * the name of M.I.T. not be used in advertising or publicity pertaining
+ * to distribution of the software without specific, written prior
+ * permission.  Furthermore if you modify this software you must label
+ * your software as modified software and not distribute it in such a
+ * fashion that it might be confused with the original M.I.T. software.
+ * M.I.T. makes no representations about the suitability of
+ * this software for any purpose.  It is provided "as is" without express
+ * or implied warranty.
+ */
+
+#include "ccs_common.h"
+#include "ccs_os_server.h"
+
+/* Server Globals: */
+
+cci_uuid_string_t g_server_id = NULL;
+ccs_cache_collection_t g_cache_collection = NULL;
+ccs_pipe_array_t g_client_pipe_array = NULL;
+
+/* ------------------------------------------------------------------------ */
+
+ cc_int32 ccs_server_initialize (void)
+{
+    cc_int32 err = ccNoError;
+
+    if (!err) {
+        err = cci_identifier_new_uuid (&g_server_id);
+    }
+    
+    if (!err) {
+        err = ccs_cache_collection_new (&g_cache_collection);
+    }
+    
+    if (!err) {
+        err = ccs_pipe_array_new (&g_client_pipe_array);
+    }
+    
+    return cci_check_error (err);    
+}
+
+/* ------------------------------------------------------------------------ */
+
+ cc_int32 ccs_server_cleanup (void)
+{
+    cc_int32 err = ccNoError;
+    
+    if (!err) {
+        free (g_server_id);
+        cci_check_error (ccs_cache_collection_release (g_cache_collection));
+        cci_check_error (ccs_pipe_array_release (g_client_pipe_array));
+    }
+    
+    return cci_check_error (err);    
+}
+
+#pragma mark -
+
+/* ------------------------------------------------------------------------ */
+
+cc_int32 ccs_server_new_identifier (cci_identifier_t *out_identifier)
+{
+    return cci_check_error (cci_identifier_new (out_identifier,
+                                                g_server_id));
+}
+
+#pragma mark -
+
+/* ------------------------------------------------------------------------ */
+
+cc_int32 ccs_server_add_client (ccs_os_pipe_t in_connection_os_pipe)
+{
+    cc_int32 err = ccNoError;
+    ccs_pipe_t connection_pipe = NULL;
+    
+    if (!err) {
+        err = ccs_pipe_new (&connection_pipe, in_connection_os_pipe);
+    }
+    
+    if (!err) {
+        cci_debug_printf ("%s: Adding client %p.", __FUNCTION__, connection_pipe);
+        err = ccs_pipe_array_insert (g_client_pipe_array, 
+                                     connection_pipe,
+                                     ccs_pipe_array_count (g_client_pipe_array));
+    }
+
+    return cci_check_error (err);    
+}
+
+/* ------------------------------------------------------------------------ */
+
+cc_int32 ccs_server_remove_client (ccs_os_pipe_t in_connection_os_pipe)
+{
+    cc_int32 err = ccNoError;
+
+    if (!err) {
+        cc_uint64 i;
+        cc_uint64 count = ccs_pipe_array_count (g_client_pipe_array);
+        cc_uint32 found = 0;
+        
+        for (i = 0; !err && i < count; i++) {
+            ccs_pipe_t client = ccs_pipe_array_object_at_index (g_client_pipe_array, i);
+            
+            err = ccs_pipe_compare_to_os_pipe (client, in_connection_os_pipe, &found);
+            
+            if (!err && found) {
+                cci_debug_printf ("%s: Removing client %p.", __FUNCTION__, client);
+                err = ccs_pipe_array_remove (g_client_pipe_array, i);
+                break;
+            }
+        }
+        
+        if (!err && !found) {
+            cci_debug_printf ("WARNING %s() didn't find client in client list.", 
+                              __FUNCTION__);
+        }        
+    }
+    
+    return cci_check_error (err);    
+}
+
+#pragma mark -
+
+/* ------------------------------------------------------------------------ */
+
+static cc_int32 ccs_server_request_demux (ccs_pipe_t              in_client_pipe,
+                                          ccs_pipe_t              in_reply_pipe,
+                                          ccs_cache_collection_t  in_cache_collection,
+                                          enum cci_msg_id_t       in_request_name,
+                                          cci_identifier_t        in_request_identifier,
+                                          cci_stream_t            in_request_data,
+                                          cc_uint32              *out_reply_immediately,
+                                          cci_stream_t           *out_reply_data)
+{
+    cc_int32 err = ccNoError;
+
+    if (!ccs_pipe_valid (in_reply_pipe)) { err = cci_check_error (ccErrBadParam); }
+    if (!in_request_data               ) { err = cci_check_error (ccErrBadParam); }
+    if (!out_reply_immediately         ) { err = cci_check_error (ccErrBadParam); }
+    if (!out_reply_data                ) { err = cci_check_error (ccErrBadParam); }
+
+    if (!err) {
+        if (in_request_name > cci_context_first_msg_id &&
+            in_request_name < cci_context_last_msg_id) {
+            /* Note: context identifier doesn't need to match.  
+             * Client just uses the identifier to detect server relaunch. */
+            
+            if (!err) {
+                err = ccs_cache_collection_handle_message (in_client_pipe,
+                                                           in_reply_pipe,
+                                                           in_cache_collection,
+                                                           in_request_name,
+                                                           in_request_data,
+                                                           out_reply_immediately,
+                                                           out_reply_data);
+            }
+                
+        } else if (in_request_name > cci_ccache_first_msg_id &&
+                   in_request_name < cci_ccache_last_msg_id) {
+            ccs_ccache_t ccache = NULL;
+            
+            err = ccs_cache_collection_find_ccache (in_cache_collection,
+                                                    in_request_identifier,
+                                                    &ccache);            
+            
+            if (!err) {
+                err = ccs_ccache_handle_message (in_client_pipe,
+                                                 in_reply_pipe,
+                                                 ccache,
+                                                 in_cache_collection,
+                                                 in_request_name,
+                                                 in_request_data,
+                                                 out_reply_immediately,
+                                                 out_reply_data);
+            }                
+                        
+        } else if (in_request_name > cci_ccache_iterator_first_msg_id &&
+                   in_request_name < cci_ccache_iterator_last_msg_id) {
+            ccs_ccache_iterator_t ccache_iterator = NULL;
+            
+            err = ccs_cache_collection_find_ccache_iterator (in_cache_collection,
+                                                             in_request_identifier,
+                                                             &ccache_iterator);            
+            
+            if (!err) {
+                err = ccs_ccache_iterator_handle_message (ccache_iterator,
+                                                          in_cache_collection,
+                                                          in_request_name,
+                                                          in_request_data,
+                                                          out_reply_data);
+            }
+            
+            if (!err) {
+                *out_reply_immediately = 1; /* can't block */
+            }
+            
+        } else if (in_request_name > cci_credentials_iterator_first_msg_id &&
+                   in_request_name < cci_credentials_iterator_last_msg_id) {
+            ccs_credentials_iterator_t credentials_iterator = NULL;
+            ccs_ccache_t ccache = NULL;
+            
+            err = ccs_cache_collection_find_credentials_iterator (in_cache_collection,
+                                                                  in_request_identifier,
+                                                                  &ccache,
+                                                                  &credentials_iterator);            
+            
+            if (!err) {
+                err = ccs_credentials_iterator_handle_message (credentials_iterator,
+                                                               ccache,
+                                                               in_request_name,
+                                                               in_request_data,
+                                                               out_reply_data);
+            }
+            
+            if (!err) {
+                *out_reply_immediately = 1; /* can't block */
+            }
+ 
+        } else {
+            err = ccErrBadInternalMessage;
+        }
+    }
+    
+    return cci_check_error (err);
+}
+
+#pragma mark -
+
+/* ------------------------------------------------------------------------ */
+
+cc_int32 ccs_server_handle_request (ccs_pipe_t     in_client_pipe,
+                                    ccs_pipe_t     in_reply_pipe,
+                                    cci_stream_t   in_request)
+{
+    cc_int32 err = ccNoError;
+    enum cci_msg_id_t request_name = 0;
+    cci_identifier_t request_identifier = NULL;
+    cc_uint32 reply_immediately = 1;
+    cci_stream_t reply_data = NULL;
+    
+    if (!ccs_pipe_valid (in_client_pipe)) { err = cci_check_error (ccErrBadParam); }
+    if (!ccs_pipe_valid (in_reply_pipe) ) { err = cci_check_error (ccErrBadParam); }
+    if (!in_request                     ) { err = cci_check_error (ccErrBadParam); }
+    
+    if (!err) {
+        err = cci_message_read_request_header (in_request,
+                                               &request_name,
+                                               &request_identifier);
+    }
+    
+    if (!err) {
+        cc_uint32 server_err = 0;
+        cc_uint32 valid = 0;
+        ccs_cache_collection_t cache_collection = g_cache_collection;
+        
+        server_err = cci_identifier_is_for_server (request_identifier, 
+                                                   g_server_id, 
+                                                   &valid);
+        
+        if (!server_err && !valid) {
+            server_err = cci_message_invalid_object_err (request_name);
+        }
+        
+        if (!server_err) {
+            
+            /* Monolithic server implementation would need to select 
+             * cache collection here.  Currently we only support per-user
+             * servers so we always use the same cache collection. */
+            
+            server_err = ccs_server_request_demux (in_client_pipe,
+                                                   in_reply_pipe,
+                                                   cache_collection,
+                                                   request_name,
+                                                   request_identifier,
+                                                   in_request, 
+                                                   &reply_immediately,
+                                                   &reply_data);
+        }
+        
+        if (server_err || reply_immediately) {
+            err = ccs_server_send_reply (in_reply_pipe, server_err, reply_data);
+        }
+    }
+
+    cci_identifier_release (request_identifier);
+    
+    return cci_check_error (err);    
+}
+
+/* ------------------------------------------------------------------------ */
+
+cc_int32 ccs_server_send_reply (ccs_pipe_t     in_reply_pipe,
+                                cc_int32       in_reply_err,
+                                cci_stream_t   in_reply_data)
+{
+    cc_int32 err = ccNoError;
+    cci_stream_t reply = NULL;
+    
+    if (!ccs_pipe_valid (in_reply_pipe) ) { err = cci_check_error (ccErrBadParam); }
+    
+    if (!err) {
+        err = cci_message_new_reply_header (&reply, in_reply_err);
+    }
+    
+    if (!err && in_reply_data && cci_stream_size (in_reply_data) > 0) {
+        err = cci_stream_write (in_reply_data, 
+                                cci_stream_data (in_reply_data), 
+                                cci_stream_size (in_reply_data));
+    }
+    
+    if (!err) {
+        err = ccs_os_server_send_reply (in_reply_pipe, reply);
+    }
+    
+    cci_stream_release (reply);
+    
+    return cci_check_error (err);    
+}