openssl: Support version 1.1.0.

Further simplifications by Martin Storsjö, to minimize the
diff.
Signed-off-by: Martin Storsjö <martin@martin.st>

configure

@@ -4689,7 +4689,8 @@ enabled omx               && { check_header OMX_Core.h ||
                                     add_cflags -isystem/opt/vc/include/IL ; }
                                 check_header OMX_Core.h ; } ||
                                die "ERROR: OpenMAX IL headers not found"; }
-enabled openssl           && { check_pkg_config openssl openssl/ssl.h SSL_library_init && {
+enabled openssl           && { { check_pkg_config openssl openssl/ssl.h OPENSSL_init_ssl ||
+                                 check_pkg_config openssl openssl/ssl.h SSL_library_init; } && {
                                add_cflags $openssl_cflags && add_extralibs $openssl_libs; }||
                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||

libavformat/tls_openssl.c

@@ -43,6 +43,9 @@ typedef struct TLSContext {
     TLSShared tls_shared;
     SSL_CTX *ctx;
     SSL *ssl;
+#if OPENSSL_VERSION_NUMBER >= 0x1010000fL
+    BIO_METHOD* url_bio_method;
+#endif
 } TLSContext;
 
 #if HAVE_THREADS
@@ -121,15 +124,25 @@ static int tls_close(URLContext *h)
         SSL_CTX_free(c->ctx);
     if (c->tls_shared.tcp)
         ffurl_close(c->tls_shared.tcp);
+#if OPENSSL_VERSION_NUMBER >= 0x1010000fL
+    if (c->url_bio_method)
+        BIO_meth_free(c->url_bio_method);
+#endif
     ff_openssl_deinit();
     return 0;
 }
 
 static int url_bio_create(BIO *b)
 {
+#if OPENSSL_VERSION_NUMBER >= 0x1010000fL
+    BIO_set_init(b, 1);
+    BIO_set_data(b, NULL);
+    BIO_set_flags(b, 0);
+#else
     b->init = 1;
     b->ptr = NULL;
     b->flags = 0;
+#endif
     return 1;
 }
 
@@ -138,9 +151,15 @@ static int url_bio_destroy(BIO *b)
     return 1;
 }
 
+#if OPENSSL_VERSION_NUMBER >= 0x1010000fL
+#define GET_BIO_DATA(x) BIO_get_data(x);
+#else
+#define GET_BIO_DATA(x) (x)->ptr;
+#endif
+
 static int url_bio_bread(BIO *b, char *buf, int len)
 {
-    URLContext *h = b->ptr;
+    URLContext *h = GET_BIO_DATA(b);
     int ret = ffurl_read(h, buf, len);
     if (ret >= 0)
         return ret;
@@ -152,7 +171,7 @@ static int url_bio_bread(BIO *b, char *buf, int len)
 
 static int url_bio_bwrite(BIO *b, const char *buf, int len)
 {
-    URLContext *h = b->ptr;
+    URLContext *h = GET_BIO_DATA(b);
     int ret = ffurl_write(h, buf, len);
     if (ret >= 0)
         return ret;
@@ -176,6 +195,7 @@ static int url_bio_bputs(BIO *b, const char *str)
     return url_bio_bwrite(b, str, strlen(str));
 }
 
+#if OPENSSL_VERSION_NUMBER < 0x1010000fL
 static BIO_METHOD url_bio_method = {
     .type = BIO_TYPE_SOURCE_SINK,
     .name = "urlprotocol bio",
@@ -187,6 +207,7 @@ static BIO_METHOD url_bio_method = {
     .create = url_bio_create,
     .destroy = url_bio_destroy,
 };
+#endif
 
 static int tls_open(URLContext *h, const char *uri, int flags, AVDictionary **options)
 {
@@ -230,8 +251,20 @@ static int tls_open(URLContext *h, const char *uri, int flags, AVDictionary **op
         ret = AVERROR(EIO);
         goto fail;
     }
+#if OPENSSL_VERSION_NUMBER >= 0x1010000fL
+    p->url_bio_method = BIO_meth_new(BIO_TYPE_SOURCE_SINK, "urlprotocol bio");
+    BIO_meth_set_write(p->url_bio_method, url_bio_bwrite);
+    BIO_meth_set_read(p->url_bio_method, url_bio_bread);
+    BIO_meth_set_puts(p->url_bio_method, url_bio_bputs);
+    BIO_meth_set_ctrl(p->url_bio_method, url_bio_ctrl);
+    BIO_meth_set_create(p->url_bio_method, url_bio_create);
+    BIO_meth_set_destroy(p->url_bio_method, url_bio_destroy);
+    bio = BIO_new(p->url_bio_method);
+    BIO_set_data(bio, c->tcp);
+#else
     bio = BIO_new(&url_bio_method);
     bio->ptr = c->tcp;
+#endif
     SSL_set_bio(p->ssl, bio, bio);
     if (!c->listen && !c->numerichost)
         SSL_set_tlsext_host_name(p->ssl, c->host);