[source] tools: mkimage: fix build with OpenSSL 1.1.x (FS#182)

[LEDE Commits]

jow pushed a commit to source.git, branch master:
https://git.lede-project.org/70b104f98c0657323b28fce140b73a94bf3eb756

commit 70b104f98c0657323b28fce140b73a94bf3eb756
Author: Jo-Philipp Wich <jo at mein.io>
AuthorDate: Wed Nov 30 18:09:05 2016 +0100

    tools: mkimage: fix build with OpenSSL 1.1.x (FS#182)
    
    The OpenSSL 1.1.x version series undergone some major API changes which made
    the RSA structure opaque and deprecated a number of methods, so add some
    conditional compat code to make the u-boot source build again.
    
    Signed-off-by: Jo-Philipp Wich <jo at mein.io>
---
 .../mkimage/patches/210-openssl-1.1.x-compat.patch | 97 ++++++++++++++++++++++
 1 file changed, 97 insertions(+)

diff --git a/tools/mkimage/patches/210-openssl-1.1.x-compat.patch b/tools/mkimage/patches/210-openssl-1.1.x-compat.patch
new file mode 100644
index 0000000..fa7c99f
--- /dev/null
+++ b/tools/mkimage/patches/210-openssl-1.1.x-compat.patch
@@ -0,0 +1,97 @@
+--- a/lib/rsa/rsa-sign.c
++++ b/lib/rsa/rsa-sign.c
+@@ -15,10 +15,25 @@
+ #include <openssl/ssl.h>
+ #include <openssl/evp.h>
+ 
+-#if OPENSSL_VERSION_NUMBER >= 0x10000000L
++#if OPENSSL_VERSION_NUMBER < 0x10000000L
++#define HAVE_ERR_REMOVE_STATE
++#elif OPENSSL_VERSION_NUMBER < 0x10100000L
+ #define HAVE_ERR_REMOVE_THREAD_STATE
+ #endif
+ 
++#if OPENSSL_VERSION_NUMBER < 0x10100005L
++static void RSA_get0_key(const RSA *r,
++                         const BIGNUM **n, const BIGNUM **e, const BIGNUM **d)
++{
++   if (n != NULL)
++       *n = r->n;
++   if (e != NULL)
++       *e = r->e;
++   if (d != NULL)
++       *d = r->d;
++}
++#endif
++
+ static int rsa_err(const char *msg)
+ {
+ 	unsigned long sslErr = ERR_get_error();
+@@ -154,7 +169,8 @@ static void rsa_remove(void)
+ 	ERR_free_strings();
+ #ifdef HAVE_ERR_REMOVE_THREAD_STATE
+ 	ERR_remove_thread_state(NULL);
+-#else
++#endif
++#ifdef HAVE_ERR_REMOVE_STATE
+ 	ERR_remove_state(0);
+ #endif
+ 	EVP_cleanup();
+@@ -210,7 +226,6 @@ static int rsa_sign_with_key(RSA *rsa, s
+ 		ret = rsa_err("Could not obtain signature");
+ 		goto err_sign;
+ 	}
+-	EVP_MD_CTX_cleanup(context);
+ 	EVP_MD_CTX_destroy(context);
+ 	EVP_PKEY_free(key);
+ 
+@@ -270,23 +285,26 @@ static int rsa_get_exponent(RSA *key, ui
+ 	BIGNUM *bn_te;
+ 	uint64_t te;
+ 
++	const BIGNUM *bn_e;
++	RSA_get0_key(key, NULL, &bn_e, NULL);
++
+ 	ret = -EINVAL;
+ 	bn_te = NULL;
+ 
+ 	if (!e)
+ 		goto cleanup;
+ 
+-	if (BN_num_bits(key->e) > 64)
++	if (BN_num_bits(bn_e) > 64)
+ 		goto cleanup;
+ 
+-	*e = BN_get_word(key->e);
++	*e = BN_get_word(bn_e);
+ 
+-	if (BN_num_bits(key->e) < 33) {
++	if (BN_num_bits(bn_e) < 33) {
+ 		ret = 0;
+ 		goto cleanup;
+ 	}
+ 
+-	bn_te = BN_dup(key->e);
++	bn_te = BN_dup(bn_e);
+ 	if (!bn_te)
+ 		goto cleanup;
+ 
+@@ -319,6 +337,9 @@ int rsa_get_params(RSA *key, uint64_t *e
+ 	BN_CTX *bn_ctx = BN_CTX_new();
+ 	int ret = 0;
+ 
++	const BIGNUM *bn_n;
++	RSA_get0_key(key, &bn_n, NULL, NULL);
++
+ 	/* Initialize BIGNUMs */
+ 	big1 = BN_new();
+ 	big2 = BN_new();
+@@ -337,7 +358,7 @@ int rsa_get_params(RSA *key, uint64_t *e
+ 	if (0 != rsa_get_exponent(key, exponent))
+ 		ret = -1;
+ 
+-	if (!BN_copy(n, key->n) || !BN_set_word(big1, 1L) ||
++	if (!BN_copy(n, bn_n) || !BN_set_word(big1, 1L) ||
+ 	    !BN_set_word(big2, 2L) || !BN_set_word(big32, 32L))
+ 		ret = -1;
+