1 files changed, 31 insertions, 0 deletions
diff --git a/src/account/aux_lu.c b/src/account/aux_lu.c
index 2907214..9da5256 100644
--- a/src/account/aux_lu.c
+++ b/src/account/aux_lu.c
@@ -1,6 +1,8 @@
 #include "aux_lu.h"
 #include <libuser/entity.h>
 #include <libuser/user.h>
+#include <utmp.h>
+#include <string.h>
 
 /*
  * Get the value of type from the given entity
@@ -20,3 +22,32 @@ long aux_lu_get_long(struct lu_ent* ent, char* type)
   return g_value_get_long(g_value_array_get_nth(lu_ent_get(ent, type), 0));
 }
 
+/*
+ * Get the latest login time for given user name
+ * return value greater than 0 on success
+ * return 0 when not found
+ * return -1 on error and errno properly set
+ */
+time_t aux_utmp_latest(const char* name)
+{
+  time_t last = 0, check = 0;
+  unsigned int found = 0;
+  struct utmp *rec = NULL;
+  if (utmpname(WTMP_FILE))
+    {
+      return -1;
+    }
+  setutent();
+  while ((rec = getutent()) != NULL)
+    {
+      if (rec->ut_type == USER_PROCESS && strcmp(rec->ut_user, name) == 0)
+        {
+          found = 1;
+          check = rec->ut_tv.tv_sec;
+          last = last > check ? last : check;
+        }
+    }
+  endutent();
+  return found ? last : -1;
+}
+