[libbluray-devel] [PATCH 2/2] Load libjli on macOS

[Marvin Scholz]

This works around an issue where even though a new
Java version is installed, you will still get prompted
to install the old Java 6. To workaround this issue, we
need to dynamically load the libjli.

(See https://bugs.openjdk.java.net/browse/JDK-7131356)
---
 src/libbluray/bdj/bdj.c | 43 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 43 insertions(+)

diff --git a/src/libbluray/bdj/bdj.c b/src/libbluray/bdj/bdj.c
index 9d0f475..18afb76 100644
--- a/src/libbluray/bdj/bdj.c
+++ b/src/libbluray/bdj/bdj.c
@@ -54,6 +54,9 @@
 #endif
 
 struct bdjava_s {
+#if defined(__APPLE__) && !defined(HAVE_BDJ_J2ME)
+    void   *h_libjli;
+#endif
     void   *h_libjvm;
     JavaVM *jvm;
 };
@@ -242,6 +245,27 @@ static void *_jvm_dlopen(const char *java_home, const char *jvm_dir, const char
     }
 }
 
+#if defined(__APPLE__) && !defined(HAVE_BDJ_J2ME)
+static void *_load_jli_macos()
+{
+    const char *java_home = NULL;
+    static const char jli_dir[] = "jre/lib/jli";
+    static const char jli_lib[] = "libjli";
+
+    /* JAVA_HOME set, use it */
+    java_home = getenv("JAVA_HOME");
+    if (java_home) {
+        return _jvm_dlopen(java_home, jli_dir, jli_lib);
+    }
+
+    java_home = _java_home_macos();
+    if (java_home) {
+        return _jvm_dlopen(java_home, jli_dir, jli_lib);
+    }
+    return NULL;
+}
+#endif
+
 static void *_load_jvm(const char **p_java_home)
 {
 #ifdef HAVE_BDJ_J2ME
@@ -696,6 +720,16 @@ BDJAVA* bdj_open(const char *path, struct bluray *bd,
         return NULL;
     }
 
+#if defined(__APPLE__) && !defined(HAVE_BDJ_J2ME)
+    /* On macOS we need to load libjli to workaround a bug where the wrong
+     * version would be used: https://bugs.openjdk.java.net/browse/JDK-7131356
+     */
+    void* jli_lib = _load_jli_macos();
+    if (jli_lib) {
+        BD_DEBUG(DBG_BDJ, "Wasn't able to load JLI\n");
+    }
+#endif
+
     // first load the jvm using dlopen
     const char *java_home = NULL;
     void* jvm_lib = _load_jvm(&java_home);
@@ -721,6 +755,9 @@ BDJAVA* bdj_open(const char *path, struct bluray *bd,
         return NULL;
     }
 
+#if defined(__APPLE__) && !defined(HAVE_BDJ_J2ME)
+    bdjava->h_libjli = jli_lib;
+#endif
     bdjava->h_libjvm = jvm_lib;
     bdjava->jvm = jvm;
 
@@ -783,6 +820,12 @@ void bdj_close(BDJAVA *bdjava)
         dl_dlclose(bdjava->h_libjvm);
     }
 
+#if defined(__APPLE__) && !defined(HAVE_BDJ_J2ME)
+    if (bdjava->h_libjli) {
+        dl_dlclose(bdjava->h_libjli);
+    }
+#endif
+
     X_FREE(bdjava);
 }
 
-- 
2.9.3 (Apple Git-75)