1 files changed, 50 insertions, 3 deletions

diff --git a/src/providers/dp_dyndns.c b/src/providers/dp_dyndns.c
index 81228d5cf..337817fc7 100644
--- a/src/providers/dp_dyndns.c
+++ b/src/providers/dp_dyndns.c
@@ -879,6 +879,45 @@ be_nsupdate_recv(struct tevent_req *req, int *child_status)
     return EOK;
 }
 
+static void be_nsupdate_timer(struct tevent_context *ev,
+                              struct tevent_timer *te,
+                              struct timeval current_time,
+                              void *pvt)
+{
+    struct be_nsupdate_ctx *ctx = talloc_get_type(pvt, struct be_nsupdate_ctx);
+
+    talloc_zfree(ctx->refresh_timer);
+    ctx->timer_callback(ctx->timer_pvt);
+
+    /* timer_callback is responsible for calling be_nsupdate_timer_schedule
+     * again */
+}
+
+void be_nsupdate_timer_schedule(struct tevent_context *ev,
+                                struct be_nsupdate_ctx *ctx)
+{
+    int refresh;
+    struct timeval tv;
+
+    if (ctx->refresh_timer) {
+        DEBUG(SSSDBG_FUNC_DATA, ("Timer already scheduled\n"));
+        return;
+    }
+
+    refresh = dp_opt_get_int(ctx->opts, DP_OPT_DYNDNS_REFRESH_INTERVAL);
+    if (refresh == 0) return;
+    DEBUG(SSSDBG_FUNC_DATA, ("Scheduling timer in %d seconds\n", refresh));
+
+    tv = tevent_timeval_current_ofs(refresh, 0);
+    ctx->refresh_timer = tevent_add_timer(ev, ctx, tv,
+                                          be_nsupdate_timer, ctx);
+
+    if (!ctx->refresh_timer) {
+        DEBUG(SSSDBG_MINOR_FAILURE,
+                ("Failed to add dyndns refresh timer event\n"));
+    }
+}
+
 errno_t
 be_nsupdate_check(void)
 {
@@ -906,6 +945,7 @@ be_nsupdate_check(void)
 
 static struct dp_option default_dyndns_opts[] = {
     { "dyndns_update", DP_OPT_BOOL, BOOL_FALSE, BOOL_FALSE },
+    { "dyndns_refresh_interval", DP_OPT_NUMBER, NULL_NUMBER, NULL_NUMBER },
     { "dyndns_iface", DP_OPT_STRING, NULL_STRING, NULL_STRING },
     { "dyndns_ttl", DP_OPT_NUMBER, { .number = 1200 }, NULL_NUMBER },
 
@@ -914,13 +954,16 @@ static struct dp_option default_dyndns_opts[] = {
 
 errno_t
 be_nsupdate_init(TALLOC_CTX *mem_ctx, struct be_ctx *be_ctx,
-                 struct dp_option *defopts, struct be_nsupdate_ctx **_ctx)
+                 struct dp_option *defopts,
+                 nsupdate_timer_fn_t timer_callback,
+                 void *timer_pvt,
+                 struct be_nsupdate_ctx **_ctx)
 {
     errno_t ret;
     struct dp_option *src_opts;
     struct be_nsupdate_ctx *ctx;
 
-    ctx = talloc(mem_ctx, struct be_nsupdate_ctx);
+    ctx = talloc_zero(mem_ctx, struct be_nsupdate_ctx);
     if (ctx == NULL) return ENOMEM;
 
     src_opts = defopts ? defopts : default_dyndns_opts;
@@ -932,6 +975,10 @@ be_nsupdate_init(TALLOC_CTX *mem_ctx, struct be_ctx *be_ctx,
         return ret;
     }
 
+    ctx->timer_callback = timer_callback;
+    ctx->timer_pvt = timer_pvt;
+    be_nsupdate_timer_schedule(be_ctx->ev, ctx);
+
     *_ctx = ctx;
-    return EOK;
+    return ERR_OK;
 }