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/*
* Copyright (c) 2011 Alexandria Wolcott
* Released under the same terms as Atheme itself.
*
* Netsplit monitor
*
*/
#include "atheme.h"
DECLARE_MODULE_V1("statserv/netsplit", false, _modinit, _moddeinit,
PACKAGE_STRING, "Alexandria Wolcott <alyx@sporksmoo.net>");
static void ss_cmd_netsplit(sourceinfo_t * si, int parc, char *parv[]);
static void ss_cmd_netsplit_list(sourceinfo_t * si, int parc, char *parv[]);
static void ss_cmd_netsplit_remove(sourceinfo_t * si, int parc, char *parv[]);
command_t ss_netsplit =
{ "NETSPLIT", N_("Monitor network splits."), PRIV_SERVER_AUSPEX, 2, ss_cmd_netsplit, {.path = "statserv/netsplit"} };
command_t ss_netsplit_list =
{ "LIST", N_("List currently split servers."), PRIV_SERVER_AUSPEX, 1, ss_cmd_netsplit_list, {.path = ""} };
command_t ss_netsplit_remove =
{ "REMOVE", N_("Remove a server from the netsplit list."), PRIV_JUPE, 2, ss_cmd_netsplit_remove, {.path = ""} };
mowgli_patricia_t *ss_netsplit_cmds;
mowgli_patricia_t *splitlist;
mowgli_heap_t *split_heap;
typedef struct {
char *name;
time_t disconnected_since;
unsigned int flags;
} split_t;
static void netsplit_delete_serv(split_t *s)
{
mowgli_patricia_delete(splitlist, s->name);
free(s->name);
mowgli_heap_free(split_heap, s);
}
static void netsplit_server_add(server_t *s)
{
split_t *serv = mowgli_patricia_retrieve(splitlist, s->name);
if (serv != NULL)
{
netsplit_delete_serv(serv);
}
}
static void netsplit_server_delete(hook_server_delete_t *serv)
{
split_t *s;
s = mowgli_heap_alloc(split_heap);
s->name = sstrdup(serv->s->name);
s->disconnected_since = CURRTIME;
s->flags = serv->s->flags;
mowgli_patricia_add(splitlist, s->name, s);
}
static void ss_cmd_netsplit(sourceinfo_t * si, int parc, char *parv[])
{
command_t *c;
char *cmd = parv[0];
if (!cmd)
{
command_fail(si, fault_needmoreparams, STR_INSUFFICIENT_PARAMS, "NETSPLIT");
command_fail(si, fault_needmoreparams,
_("Syntax: NETSPLIT [LIST|REMOVE] [parameters]"));
return;
}
c = command_find(ss_netsplit_cmds, cmd);
if (c == NULL)
{
command_fail(si, fault_badparams,
_("Invalid command. Use \2/%s%s help\2 for a command listing."),
(ircd->uses_rcommand == false) ? "msg " : "", si->service->disp);
return;
}
command_exec(si->service, si, c, parc - 1, parv + 1);
}
static void ss_cmd_netsplit_list(sourceinfo_t * si, int parc, char *parv[])
{
split_t *s;
mowgli_patricia_iteration_state_t state;
int i = 0;
MOWGLI_PATRICIA_FOREACH(s, &state, splitlist)
{
i++;
command_success_nodata(si, _("%d: %s [Split %s ago]"), i, s->name, time_ago(s->disconnected_since));
}
command_success_nodata(si, _("End of netsplit list."));
}
static void ss_cmd_netsplit_remove(sourceinfo_t * si, int parc, char *parv[])
{
char *name = parv[0];
split_t *s;
if (!name)
{
command_fail(si, fault_needmoreparams, STR_INSUFFICIENT_PARAMS, "NETSPLIT REMOVE");
command_fail(si, fault_needmoreparams,
_("Syntax: NETSPLIT REMOVE <server>"));
return;
}
s = mowgli_patricia_retrieve(splitlist, name);
if (s != NULL)
{
netsplit_delete_serv(s);
command_success_nodata(si, _("%s removed from the netsplit list."), name);
}
else
command_fail(si, fault_nosuch_target, _("The server \2%s\2 does is not a split server."), name);
}
void _modinit(module_t * m)
{
service_named_bind_command("statserv", &ss_netsplit);
ss_netsplit_cmds = mowgli_patricia_create(strcasecanon);
command_add(&ss_netsplit_list, ss_netsplit_cmds);
command_add(&ss_netsplit_remove, ss_netsplit_cmds);
hook_add_event("server_add");
hook_add_event("server_delete");
hook_add_server_add(netsplit_server_add);
hook_add_server_delete(netsplit_server_delete);
split_heap = mowgli_heap_create(sizeof(split_t), 30, BH_NOW);
if (split_heap == NULL)
{
slog(LG_INFO, "statserv/netsplit _modinit(): block allocator failure.");
exit(EXIT_FAILURE);
}
splitlist = mowgli_patricia_create(irccasecanon);
}
void _moddeinit(module_unload_intent_t intent)
{
mowgli_patricia_iteration_state_t state;
split_t *s;
MOWGLI_PATRICIA_FOREACH(s, &state, splitlist)
netsplit_delete_serv(s);
mowgli_heap_destroy(split_heap);
service_named_unbind_command("statserv", &ss_netsplit);
command_delete(&ss_netsplit_list, ss_netsplit_cmds);
command_delete(&ss_netsplit_remove, ss_netsplit_cmds);
hook_del_event("server_add");
hook_del_event("server_delete");
hook_del_server_add(netsplit_server_add);
hook_del_server_delete(netsplit_server_delete);
mowgli_patricia_destroy(ss_netsplit_cmds, NULL, NULL);
mowgli_patricia_destroy(splitlist, NULL, NULL);
}
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