Add more logs and fetch libc in hash function

pwnlib/commandline/libcdb.py

@@ -223,13 +223,14 @@ def main(args):
             libs_id = None
             hash_type = args.hash_type if args.hash_type != "buildid" else "build_id"
 
-            # search and download libc
+            # Search and download libc
             exe_path = libcdb.search_by_hash(hash_value, hash_type, args.unstrip, args.offline)
 
             if exe_path:
                 libs_id = read(exe_path + ".id").decode()
 
             if not libs_id:
+                log.warn("%s(libc) == %s is not found", hash_type, hash_value)
                 continue
 
             # Dump common symbols
@@ -244,6 +245,7 @@ def main(args):
 
             libc = libcdb._pack_libs_info(exe_path, libs_id, "", symbols)
             print_libc(libc)
+            fetch_libc(args, libc)
 
     elif args.libc_command == 'file':
         from hashlib import md5, sha1, sha256