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-rw-r--r--src/feature/rend/rendservice.c23
1 files changed, 23 insertions, 0 deletions
diff --git a/src/feature/rend/rendservice.c b/src/feature/rend/rendservice.c
index 1a99bd56ed..1af9117aaf 100644
--- a/src/feature/rend/rendservice.c
+++ b/src/feature/rend/rendservice.c
@@ -1341,6 +1341,29 @@ rend_service_poison_new_single_onion_dir(const rend_service_t *s,
return 0;
}
+/* Return true iff the given service identity key is present on disk. This is
+ * used to try to learn the service version during configuration time. */
+int
+rend_service_key_on_disk(const char *directory_path)
+{
+ int ret = 0;
+ char *fname;
+ crypto_pk_t *pk = NULL;
+
+ tor_assert(directory_path);
+
+ /* Load key */
+ fname = hs_path_from_filename(directory_path, private_key_fname);
+ pk = init_key_from_file(fname, 0, LOG_DEBUG, 0);
+ if (pk) {
+ ret = 1;
+ }
+
+ crypto_pk_free(pk);
+ tor_free(fname);
+ return ret;
+}
+
/** Load and/or generate private keys for all hidden services, possibly
* including keys for client authorization.
* If a <b>service_list</b> is provided, treat it as the list of hidden