1 files changed, 124 insertions, 0 deletions
diff --git a/src/mds-server/client.c b/src/mds-server/client.c
new file mode 100644
index 0000000..13b291c
--- /dev/null
+++ b/src/mds-server/client.c
@@ -0,0 +1,124 @@
+/**
+ * mds — A micro-display server
+ * Copyright © 2014  Mattias Andrée (maandree@member.fsf.org)
+ * 
+ * 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 3 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, see <http://www.gnu.org/licenses/>.
+ */
+#include "client.h"
+
+#include <libmdsserver/macros.h>
+
+#include <stdlib.h>
+#include <string.h>
+
+
+
+/**
+ * Calculate the buffer size need to marshal client information
+ * 
+ * @param   this  The client information
+ * @return        The number of bytes to allocate to the output buffer
+ */
+size_t client_marshal_size(const client_t* restrict this)
+{
+  size_t n = sizeof(ssize_t) + 2 * sizeof(int) + sizeof(uint64_t) + 3 * sizeof(size_t);
+  size_t i;
+  
+  n += mds_message_marshal_size(&(this->message), 1);
+  for (i = 0; i < this->interception_conditions_count; i++)
+    n += interception_condition_marshal_size(this->interception_conditions + i);
+  n += this->send_pending_size * sizeof(char);
+  
+  return n;
+}
+
+
+/**
+ * Marshals an client information
+ * 
+ * @param   this  The client information
+ * @param   data  Output buffer for the marshalled data
+ * @return        The number of bytes that have been written (everything will be written)
+ */
+size_t client_marshal(const client_t* restrict this, char* restrict data)
+{
+  size_t i, n;
+  buf_set_next(data, ssize_t, this->list_entry);
+  buf_set_next(data, int, this->socket_fd);
+  buf_set_next(data, int, this->open);
+  buf_set_next(data, uint64_t, this->id);
+  n = mds_message_marshal_size(&(this->message), 1);;
+  buf_set_next(data, size_t, n);
+  mds_message_marshal(&(this->message), data, 1);
+  data += n / sizeof(char);
+  buf_set_next(data, size_t, this->interception_conditions_count);
+  for (i = 0; i < this->interception_conditions_count; i++)
+    data += interception_condition_marshal(this->interception_conditions + i, data) / sizeof(char);
+  buf_set_next(data, size_t, this->send_pending_size);
+  if (this->send_pending_size > 0)
+    memcpy(data, this->send_pending, this->send_pending_size * sizeof(char));
+  return client_marshal_size(this);
+}
+
+
+/**
+ * Unmarshals an client information
+ * 
+ * @param   this  Memory slot in which to store the new client information
+ * @param   data  In buffer with the marshalled data
+ * @return        Zero on error, errno will be set accordingly, otherwise the number of read bytes
+ */
+size_t client_unmarshal(client_t* restrict this, char* restrict data)
+{
+  size_t i, n, rc = sizeof(ssize_t) + 2 * sizeof(int) + sizeof(uint64_t) + 3 * sizeof(size_t);
+  this->interception_conditions = NULL;
+  this->send_pending = NULL;
+  buf_get_next(data, ssize_t, this->list_entry);
+  buf_get_next(data, int, this->socket_fd);
+  buf_get_next(data, int, this->open);
+  buf_get_next(data, uint64_t, this->id);
+  buf_get_next(data, size_t, n);
+  if (mds_message_unmarshal(&(this->message), data))
+    return 0;
+  data += n / sizeof(char);
+  rc += n;
+  buf_get_next(data, size_t, this->interception_conditions_count);
+  for (i = 0; i < this->interception_conditions_count; i++)
+    {
+      n = interception_condition_unmarshal(this->interception_conditions + i, data);
+      if (n == 0)
+	{
+	  this->interception_conditions_count = i - 1;
+	  goto fail;
+	}
+      data += n / sizeof(char);
+      rc += n;
+    }
+  buf_get_next(data, size_t, this->send_pending_size);
+  if (this->send_pending_size > 0)
+    {
+      if (xmalloc(this->send_pending, this->send_pending_size, char))
+	goto fail;
+      memcpy(this->send_pending, data, this->send_pending_size * sizeof(char));
+    }
+  return rc;
+  
+ fail:
+  for (i = 0; i < this->interception_conditions_count; i++)
+    free(this->interception_conditions[i].condition);
+  free(this->interception_conditions);
+  free(this->send_pending);
+  return 0;
+}
+