1 files changed, 110 insertions, 0 deletions
diff --git a/sync_pipe_write.c b/sync_pipe_write.c
new file mode 100644
index 0000000000..47f7b30408
--- /dev/null
+++ b/sync_pipe_write.c
@@ -0,0 +1,110 @@
+/* sync_pipe_write.c
+ *
+ * $Id$
+ *
+ * Ethereal - Network traffic analyzer
+ * By Gerald Combs <gerald@ethereal.com>
+ * Copyright 1998 Gerald Combs
+ *
+ * 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.
+ */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <string.h>
+
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
+#include <glib.h>
+
+#include "sync_pipe.h"
+#include "log.h"
+
+/****************************************************************************************************************/
+/* sync_pipe handling */
+
+
+/* write a single message header to the recipient pipe */
+int
+pipe_write_header(int pipe, char indicator, int length)
+{
+    guchar header[1+3]; /* indicator + 3-byte len */
+
+
+    g_assert(length <= SP_MAX_MSG_LEN);
+
+    /* write header (indicator + 3-byte len) */
+    header[0] = indicator;
+    header[1] = (length >> 16) & 0xFF;
+    header[2] = (length >> 8) & 0xFF;
+    header[3] = (length >> 0) & 0xFF;
+
+    /* write header */
+    return write(pipe, header, sizeof header);
+}
+
+
+/* write a message to the recipient pipe in the standard format 
+   (3 digit message length (excluding length and indicator field), 
+   1 byte message indicator and the rest is the message).
+   If msg is NULL, the message has only a length and indicator. */
+void
+pipe_write_block(int pipe, char indicator, const char *msg)
+{
+    int ret;
+    size_t len;
+
+    /*g_warning("write %d enter", pipe);*/
+
+    if(msg != NULL) {
+        len = strlen(msg) + 1;    /* including the terminating '\0'! */
+    } else {
+        len = 0;
+    }
+
+    /* write header (indicator + 3-byte len) */
+    ret = pipe_write_header(pipe, indicator, len);
+    if(ret == -1) {
+        return;
+    }
+
+    /* write value (if we have one) */
+    if(len) {
+        /*g_warning("write %d indicator: %c value len: %u msg: %s", pipe, indicator, len, msg);*/
+        ret = write(pipe, msg, len);
+        if(ret == -1) {
+            return;
+        }
+    } else {
+        /*g_warning("write %d indicator: %c no value", pipe, indicator);*/
+    }
+
+    /*g_warning("write %d leave", pipe);*/
+}
+
+
+void
+sync_pipe_errmsg_to_parent(const char *error_msg, const char *secondary_error_msg)
+{
+
+    /* first write a "master header" with the length of the two messages plus their "slave headers" */
+    pipe_write_header(1, SP_ERROR_MSG, strlen(error_msg) + 1 + 4 + strlen(secondary_error_msg) + 1 + 4);
+    pipe_write_block(1, SP_ERROR_MSG, error_msg);
+    pipe_write_block(1, SP_ERROR_MSG, secondary_error_msg);
+}