Fix endless loop on srp app when listing users

With the -list option the srp app loops on the main while() endlessly,
whether users were given on the command line or not. The loop should
be stopped when in list mode and there are no more users.

Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Andy Polyakov <appro@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3489)

diff --git a/apps/srp.c b/apps/srp.c
index be4a4b43d352b2c016bcb1728d8f9f22927ebefe..b14530fce34574b31bc827cda3295740f04e2ffc 100644 (file)
--- a/apps/srp.c
+++ b/apps/srp.c
@@ -37,13 +37,14 @@ static int get_index(CA_DB *db, char *id, char type)
     int i;
     if (id == NULL)
         return -1;
-    if (type == DB_SRP_INDEX)
+    if (type == DB_SRP_INDEX) {
         for (i = 0; i < sk_OPENSSL_PSTRING_num(db->db->data); i++) {
             pp = sk_OPENSSL_PSTRING_value(db->db->data, i);
             if (pp[DB_srptype][0] == DB_SRP_INDEX
                 && strcmp(id, pp[DB_srpid]) == 0)
                 return i;
-    } else
+        }
+    } else {
         for (i = 0; i < sk_OPENSSL_PSTRING_num(db->db->data); i++) {
             pp = sk_OPENSSL_PSTRING_value(db->db->data, i);
 
@@ -51,6 +52,7 @@ static int get_index(CA_DB *db, char *id, char type)
                 && strcmp(id, pp[DB_srpid]) == 0)
                 return i;
         }
+    }
 
     return -1;
 }
@@ -549,10 +551,11 @@ int srp_main(int argc, char **argv)
                 doupdatedb = 1;
             }
         }
-        if (--argc > 0)
+        if (--argc > 0) {
             user = *(argv++);
-        else {
-            user = NULL;
+        } else {
+            /* no more processing in any mode if no users left */
+            break;
         }
     }