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Add hub function for plugins to get list of currently connected users.

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Can be filtered to include only users of a certain credential level, or
users of a certain credential level or greater. Results are returned as
a linked list of plugin_user objects.

Hub function to free the memory used by the list also added.

As plugins may store the list, users may disconnect before the list is
used. Hence a copy of each user is made for the list, so that if a
plugin tries to send a message to a user who has left the hub it will be
ignored, rather than the hub trying to access memory that was free()d
when the user disconnected. The lookup function to turn a plugin_user
into a hub_user for some of the other hub functions is changed
accordingly. (I think this description is possibly more confusing than
just looking at the code, but oh well...)
This commit is contained in:
Blair Bonnett
2012-08-09 15:23:33 +12:00
parent 7a440211dd
commit dc94754488
3 changed files with 129 additions and 7 deletions
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11
src/core/pluginucmd.c
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@@ -305,6 +305,15 @@ int cbfunc_ucmd_add_pm(struct plugin_handle* plugin, struct plugin_ucmd* ucmd, c
int cbfunc_ucmd_send(struct plugin_handle* plugin, struct plugin_user* user, struct plugin_ucmd* ucmd)
{
/* Check the user is still connected. */
struct hub_info* hub = plugin_get_hub(plugin);
struct hub_user* huser = uman_get_user_by_sid(hub, user->sid);
if(huser == NULL)
{
plugin->error_msg = "User is not connected to the hub.";
return 0;
}
/* Make sure we have a command. */
if(!ucmd->length && !(ucmd->separator || ucmd->remove))
{
@@ -359,7 +368,7 @@ int cbfunc_ucmd_send(struct plugin_handle* plugin, struct plugin_user* user, str
}
/* Send it. */
route_to_user(plugin_get_hub(plugin), (struct hub_user*)user, message);
route_to_user(hub, huser, message);
/* Success. */
adc_msg_free(message);