Check return of PEM_write_* functions and report possible errors

Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/1025)

diff --git a/apps/pkcs12.c b/apps/pkcs12.c
index 406b10328a5ba6add921e1b1ee6a9370f44617d5..af5f670ba30fb5fb089be525c91bc7217f298eca 100644 (file)
--- a/apps/pkcs12.c
+++ b/apps/pkcs12.c
@@ -674,6 +674,7 @@ int dump_certs_pkeys_bag(BIO *out, PKCS12_SAFEBAG *bag, char *pass,
     PKCS8_PRIV_KEY_INFO *p8;
     X509 *x509;
     STACK_OF(X509_ATTRIBUTE) *attrs;
+    int ret = 0;
 
     attrs = PKCS12_SAFEBAG_get0_attrs(bag);
 
@@ -688,7 +689,7 @@ int dump_certs_pkeys_bag(BIO *out, PKCS12_SAFEBAG *bag, char *pass,
         if ((pkey = EVP_PKCS82PKEY(p8)) == NULL)
             return 0;
         print_attribs(out, PKCS8_pkey_get0_attrs(p8), "Key Attributes");
-        PEM_write_bio_PrivateKey(out, pkey, enc, NULL, 0, NULL, pempass);
+        ret = PEM_write_bio_PrivateKey(out, pkey, enc, NULL, 0, NULL, pempass);
         EVP_PKEY_free(pkey);
         break;
 
@@ -713,7 +714,7 @@ int dump_certs_pkeys_bag(BIO *out, PKCS12_SAFEBAG *bag, char *pass,
         }
         print_attribs(out, PKCS8_pkey_get0_attrs(p8), "Key Attributes");
         PKCS8_PRIV_KEY_INFO_free(p8);
-        PEM_write_bio_PrivateKey(out, pkey, enc, NULL, 0, NULL, pempass);
+        ret = PEM_write_bio_PrivateKey(out, pkey, enc, NULL, 0, NULL, pempass);
         EVP_PKEY_free(pkey);
         break;
 
@@ -733,7 +734,7 @@ int dump_certs_pkeys_bag(BIO *out, PKCS12_SAFEBAG *bag, char *pass,
         if ((x509 = PKCS12_SAFEBAG_get1_cert(bag)) == NULL)
             return 0;
         dump_cert_text(out, x509);
-        PEM_write_bio_X509(out, x509);
+        ret = PEM_write_bio_X509(out, x509);
         X509_free(x509);
         break;
 
@@ -750,7 +751,7 @@ int dump_certs_pkeys_bag(BIO *out, PKCS12_SAFEBAG *bag, char *pass,
         BIO_printf(bio_err, "\n");
         return 1;
     }
-    return 1;
+    return ret;
 }
 
 /* Given a single certificate return a verified chain or NULL if error */