Add a few more checks and warnings in the crypto functions.

[tinc] / src / openssl / ecdsagen.c

diff --git a/src/openssl/ecdsagen.c b/src/openssl/ecdsagen.c
index 35795f3..31e5847 100644 (file)
--- a/src/openssl/ecdsagen.c
+++ b/src/openssl/ecdsagen.c
@@ -51,16 +51,20 @@ ecdsa_t *ecdsa_generate(void) {
 
 bool ecdsa_write_pem_public_key(ecdsa_t *ecdsa, FILE *fp) {
        BIO *out = BIO_new(BIO_s_file());
+       if(!out)
+               return false;
        BIO_set_fp(out, fp, BIO_NOCLOSE);
-       PEM_write_bio_EC_PUBKEY(out, ecdsa);
+       bool result = PEM_write_bio_EC_PUBKEY(out, ecdsa);
        BIO_free(out);
-       return true;
+       return result;
 }
 
 bool ecdsa_write_pem_private_key(ecdsa_t *ecdsa, FILE *fp) {
        BIO *out = BIO_new(BIO_s_file());
+       if(!out)
+               return false;
        BIO_set_fp(out, fp, BIO_NOCLOSE);
-       PEM_write_bio_ECPrivateKey(out, ecdsa, NULL, NULL, 0, NULL, NULL);
+       bool result = PEM_write_bio_ECPrivateKey(out, ecdsa, NULL, NULL, 0, NULL, NULL);
        BIO_free(out);
-       return true;
+       return result;
 }