Timer Library Complete

Assignment/rt.c

@@ -0,0 +1,117 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <memory.h>
+#include "rt.h"
+
+void
+rt_init_rt_table(rt_table_t* rt_table) {
+
+    rt_table->head = NULL;
+}
+
+bool
+rt_add_new_rt_entry(rt_table_t* rt_table,
+    char* dest,
+    char mask,
+    char* gw_ip,
+    char* oif,
+    void (*timer_cb)(Timer_t* , void* )) {
+
+    rt_entry_t* head = NULL;
+    rt_entry_t* rt_entry = NULL;
+
+    rt_entry = calloc(1, sizeof(rt_entry_t));
+
+    if (!rt_entry)
+        return false;
+
+    strncpy(rt_entry->rt_entry_keys.dest, dest, sizeof(rt_entry->rt_entry_keys.dest));
+    rt_entry->rt_entry_keys.mask = mask;
+
+    if (gw_ip)
+        strncpy(rt_entry->gw_ip, gw_ip, sizeof(rt_entry->gw_ip));
+    if (oif)
+        strncpy(rt_entry->oif, oif, sizeof(rt_entry->oif));
+
+    rt_entry->time_to_expire = RT_TABLE_EXP_TIME;
+
+    rt_entry->timer = setup_timer((*timer_cb), RT_TABLE_EXP_TIME*1000, 0, 0, (void*)rt_entry, false);
+
+    head = rt_table->head;
+    rt_table->head = rt_entry;
+    rt_entry->prev = 0;
+    rt_entry->next = head;
+    if (head)
+        head->prev = rt_entry;
+    
+    start_timer(rt_entry->timer);
+    return true;
+}
+
+bool
+rt_delete_rt_entry(rt_table_t* rt_table,
+    char* dest, char mask) {
+
+    rt_entry_t* rt_entry = NULL;
+
+    ITERTAE_RT_TABLE_BEGIN(rt_table, rt_entry) {
+
+        if (strncmp(rt_entry->rt_entry_keys.dest,
+            dest, sizeof(rt_entry->rt_entry_keys.dest)) == 0 &&
+            rt_entry->rt_entry_keys.mask == mask) {
+
+            rt_entry_remove(rt_table, rt_entry);
+
+            printf("deleting rt entry %p [%s:%d]\n",
+                rt_entry, rt_entry->rt_entry_keys.dest,
+                rt_entry->rt_entry_keys.mask);
+
+            free(rt_entry);
+            return true;
+        }
+    } ITERTAE_RT_TABLE_END(rt_table, curr);
+
+    return false;
+}
+
+bool
+rt_update_rt_entry(rt_table_t* rt_table,
+    char* dest,
+    char mask,
+    char* new_gw_ip,
+    char* new_oif) {
+
+    return true;
+}
+
+void
+rt_clear_rt_table(rt_table_t* rt_table) {
+
+
+}
+
+void
+rt_free_rt_table(rt_table_t* rt_table) {
+
+
+}
+
+void
+rt_dump_rt_table(rt_table_t* rt_table) {
+
+    rt_entry_t* rt_entry = NULL;
+
+    ITERTAE_RT_TABLE_BEGIN(rt_table, rt_entry) {
+
+        unsigned long time_in_milli_sec = timer_get_time_remaining_in_milli_sec(rt_entry->timer);
+
+        printf("%-20s %-4d %-20s %-12s %usec (%lu)\n",
+            rt_entry->rt_entry_keys.dest,
+            rt_entry->rt_entry_keys.mask,
+            rt_entry->gw_ip,
+            rt_entry->oif,
+            rt_entry->time_to_expire,
+            time_in_milli_sec);
+    } ITERTAE_RT_TABLE_END(rt_tabl, rt_entry);
+}