Fixed erroneous string lengths.

[utils.git] / pam_krb5auto.c

diff --git a/pam_krb5auto.c b/pam_krb5auto.c
index 3f7bf00..6f9bc73 100644 (file)
--- a/pam_krb5auto.c
+++ b/pam_krb5auto.c
@@ -183,8 +183,8 @@ static int savecreds(pam_handle_t *pamh, struct options *opts, struct data *data
     if(opts->debug)
        log(LOG_DEBUG, "got creds successfully");
     snprintf(buf, sizeof(buf), "KRB5CCNAME=FILE:/tmp/krb5cc_%i_XXXXXX", data->uid);
-    ccname = buf + sizeof("KRB5CCNAME=");
-    filename = ccname + sizeof("FILE:");
+    ccname = buf + sizeof("KRB5CCNAME=") - 1;
+    filename = ccname + sizeof("FILE:") - 1;
     if((fd = mkstemp(filename)) < 0) {
        log(LOG_ERR, "could not create tempfile for credentials cache: %s", strerror(errno));
        ret = PAM_SERVICE_ERR;