1 files changed, 120 insertions, 0 deletions
diff --git a/plugins/transum/extractors.c b/plugins/transum/extractors.c
new file mode 100644
index 0000000000..f2c72371cc
--- /dev/null
+++ b/plugins/transum/extractors.c
@@ -0,0 +1,120 @@
+/* extractors.c
+* Routines for the TRANSUM response time analyzer post-dissector
+* By Paul Offord <paul.offord@advance7.com>
+* Copyright 2016 Advance Seven Limited
+*
+* Wireshark - Network traffic analyzer
+* By Gerald Combs <gerald@wireshark.org>
+* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*/
+#include "config.h"
+#include <epan/prefs.h>
+#include <epan/packet.h>
+#include "extractors.h"
+
+/*
+    This function extracts a field value (e.g. tcp.len) from a tree.  Because a packet may contain
+    multiple values for the the field the extracted values are returned in a result_array.  The
+    number of array entries is returned in element_count.
+
+    Return is 0 if all went well.  If this function return -1 it is probably because the tree did not
+    include the field defined by the field_id.
+ */
+int extract_uint(proto_tree *tree, int field_id, guint32 *result_array, size_t *element_count)
+{
+    GPtrArray *finfo_array = proto_find_finfo(tree, field_id);
+
+    if (finfo_array == NULL) {
+        return -1;
+    }
+
+    *element_count = g_ptr_array_len(finfo_array);
+
+    for (int i = 0; i < *element_count && i < MAX_RETURNED_ELEMENTS; i++)
+    {
+        result_array[i] = fvalue_get_uinteger(&((field_info*)finfo_array->pdata[i])->value);
+    }
+
+    g_ptr_array_free(finfo_array, TRUE);
+
+    return 0;
+}
+
+int extract_ui64(proto_tree *tree, int field_id, guint64 *result_array, size_t *element_count)
+{
+    GPtrArray *finfo_array = proto_find_finfo(tree, field_id);
+
+    if (finfo_array == NULL) {
+        return -1;
+    }
+
+    *element_count = g_ptr_array_len(finfo_array);
+
+    for (int i = 0; i < *element_count && i < MAX_RETURNED_ELEMENTS; i++)
+    {
+        result_array[i] = fvalue_get_uinteger64(&((field_info*)finfo_array->pdata[i])->value);
+    }
+
+    g_ptr_array_free(finfo_array, TRUE);
+
+    return 0;
+}
+
+int extract_si64(proto_tree *tree, int field_id, guint64 *result_array, size_t *element_count)
+{
+    GPtrArray *finfo_array = proto_find_finfo(tree, field_id);
+
+    if (finfo_array == NULL) {
+        return -1;
+    }
+
+    *element_count = g_ptr_array_len(finfo_array);
+
+    for (int i = 0; i < *element_count && i < MAX_RETURNED_ELEMENTS; i++)
+    {
+        result_array[i] = fvalue_get_sinteger64(&((field_info*)finfo_array->pdata[i])->value);
+    }
+
+    g_ptr_array_free(finfo_array, TRUE);
+
+    return 0;
+}
+
+int extract_bool(proto_tree *tree, int field_id, gboolean *result_array, size_t *element_count)
+{
+    GPtrArray *finfo_array = proto_find_finfo(tree, field_id);
+
+    if (finfo_array == NULL) {
+        return -1;
+    }
+
+    *element_count = g_ptr_array_len(finfo_array);
+
+    for (int i = 0; i < *element_count && i < MAX_RETURNED_ELEMENTS; i++)
+    {
+        fvalue_t *fv = &(((field_info*)finfo_array->pdata[i])->value);
+
+        if (fv->value.uinteger)
+            result_array[i] = TRUE;
+        else
+            result_array[i] = FALSE;
+    }
+
+    g_ptr_array_free(finfo_array, TRUE);
+
+    return 0;
+}