Fix warnings about missing return value checks.

[tinc] / src / invitation.c

diff --git a/src/invitation.c b/src/invitation.c
index 415c237..3102e41 100644 (file)
--- a/src/invitation.c
+++ b/src/invitation.c
@@ -335,7 +335,11 @@ int cmd_invite(int argc, char *argv[]) {
                        return 1;
                }
                chmod(filename, 0600);
-               ecdsa_write_pem_private_key(key, f);
+               if(!ecdsa_write_pem_private_key(key, f)) {
+                       fprintf(stderr, "Could not write ECDSA private key\n");
+                       fclose(f);
+                       return 1;
+               }
                fclose(f);
 
                if(connect_tincd(false))
@@ -704,6 +708,8 @@ make_names:
 
        snprintf(filename, sizeof filename, "%s" SLASH "ed25519_key.priv", confbase);
        f = fopenmask(filename, "w", 0600);
+       if(!f)
+               return false;
 
        if(!ecdsa_write_pem_private_key(key, f)) {
                fprintf(stderr, "Error writing private key!\n");
@@ -725,10 +731,14 @@ make_names:
        snprintf(filename, sizeof filename, "%s" SLASH "rsa_key.priv", confbase);
        f = fopenmask(filename, "w", 0600);
 
-       rsa_write_pem_private_key(rsa, f);
+       if(!f || !rsa_write_pem_private_key(rsa, f)) {
+               fprintf(stderr, "Could not write private RSA key\n");
+       } else if(!rsa_write_pem_public_key(rsa, fh)) {
+               fprintf(stderr, "Could not write public RSA key\n");
+       }
+
        fclose(f);
 
-       rsa_write_pem_public_key(rsa, fh);
        fclose(fh);
 
        rsa_free(rsa);