extcap: Add list of extcaps to about dialog

Adds the list of available extcaps to the plugin list in the
About dialog of Wireshark (Qt only). To do this, and additional
sentence is provided in the extcap arguments list, which allows
for additional information to be passed (as of right now, just
version and display is used)

Additionally, cleans up the code when using g_free.

Bug: 11683
Change-Id: I04a958e2b73c9a707ab1cb4f2fc8345833a854a9
Reviewed-on: https://code.wireshark.org/review/13224
Petri-Dish: Roland Knall <rknall@gmail.com>
Tested-by: Petri Dish Buildbot <buildbot-no-reply@wireshark.org>
Reviewed-by: Stig Bjørlykke <stig@bjorlykke.org>
Reviewed-by: Roland Knall <rknall@gmail.com>

1 files changed, 10 insertions, 0 deletions

diff --git a/extcap.h b/extcap.h
index fa334c59c6..74fc0b3b6d 100644
--- a/extcap.h
+++ b/extcap.h
@@ -49,6 +49,12 @@
 #define EXTCAP_ARGUMENT_CAPTURE_FILTER          "--extcap-capture-filter"
 #define EXTCAP_ARGUMENT_RUN_PIPE                "--fifo"
 
+typedef struct _extcap_info {
+    gchar * basename;
+    gchar * full_path;
+    gchar * version;
+} extcap_info;
+
 #ifdef __cplusplus
 extern "C" {
 #endif /* __cplusplus */
@@ -61,6 +67,10 @@ extcap_get_if_dlts(const gchar * ifname, char ** err_str);
 GList *
 extcap_interface_list(char **err_str);
 
+/* get a list of all available extcap tools */
+GHashTable *
+extcap_tools_list(void);
+
 /* returns the configuration for the given interface name, or an
  * empty list, if no configuration has been found */
 GList *