From dc2c580bdfab2b6850241afae66d7dee5db94c0e Mon Sep 17 00:00:00 2001
From: Vincent Povirk <vincent@codeweavers.com>
Date: Thu, 4 Apr 2019 10:05:31 -0500
Subject: [PATCH] mscoree: Search shared addon locations for mono runtime.

Signed-off-by: Vincent Povirk <vincent@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
---
 dlls/mscoree/Makefile.in       |  2 +
 dlls/mscoree/metahost.c        | 67 +++++++++++++++++++++++++++++++++-
 dlls/mscoree/mscoree_main.c    |  2 +-
 dlls/mscoree/mscoree_private.h |  2 +
 4 files changed, 71 insertions(+), 2 deletions(-)

diff --git a/dlls/mscoree/Makefile.in b/dlls/mscoree/Makefile.in
index 634869e9ae7..9ae43df101c 100644
--- a/dlls/mscoree/Makefile.in
+++ b/dlls/mscoree/Makefile.in
@@ -11,3 +11,5 @@ C_SRCS = \
 	mscoree_main.c
 
 IDL_SRCS = mscoree_classes.idl
+
+metahost_EXTRADEFS = -DINSTALL_DATADIR="\"${datadir}\""
diff --git a/dlls/mscoree/metahost.c b/dlls/mscoree/metahost.c
index d6af7b64b38..3c4f803717b 100644
--- a/dlls/mscoree/metahost.c
+++ b/dlls/mscoree/metahost.c
@@ -712,10 +712,75 @@ static BOOL get_mono_path_registry(LPWSTR path)
     return ret;
 }
 
+static BOOL get_mono_path_unix(const char *unix_dir, LPWSTR path)
+{
+    static WCHAR * (CDECL *p_wine_get_dos_file_name)(const char*);
+    LPWSTR dos_dir;
+    WCHAR mono_dll_path[MAX_PATH];
+    BOOL ret;
+
+    if (!p_wine_get_dos_file_name)
+    {
+        p_wine_get_dos_file_name = (void*)GetProcAddress(GetModuleHandleA("kernel32"), "wine_get_dos_file_name");
+        if (!p_wine_get_dos_file_name)
+            return FALSE;
+    }
+
+    dos_dir = p_wine_get_dos_file_name(unix_dir);
+    if (!dos_dir)
+        return FALSE;
+
+    ret = find_mono_dll(dos_dir, mono_dll_path);
+    if (ret)
+        strcpyW(path, dos_dir);
+
+    heap_free(dos_dir);
+
+    return ret;
+}
+
+static BOOL get_mono_path_datadir(LPWSTR path)
+{
+    const char *data_dir;
+    char *package_dir;
+    int len;
+    BOOL ret;
+
+    if((data_dir = wine_get_data_dir()))
+    {
+        len = strlen(data_dir);
+        package_dir = heap_alloc(len + sizeof("/mono/wine-mono-" WINE_MONO_VERSION));
+        memcpy(package_dir, data_dir, len);
+        strcpy(package_dir+len, "/mono/wine-mono-" WINE_MONO_VERSION);
+    }
+    else if((data_dir = wine_get_build_dir()))
+    {
+        len = strlen(data_dir);
+        package_dir = heap_alloc(len + sizeof("/../wine-mono-" WINE_MONO_VERSION));
+        memcpy(package_dir, data_dir, len);
+        strcpy(package_dir+len, "/../wine-mono-" WINE_MONO_VERSION);
+    }
+    else
+    {
+        return FALSE;
+    }
+
+    ret = get_mono_path_unix(package_dir, path);
+
+    heap_free(package_dir);
+
+    return ret;
+}
+
 static BOOL get_mono_path(LPWSTR path)
 {
     return get_mono_path_local(path) ||
-        get_mono_path_registry(path);
+        get_mono_path_registry(path) ||
+        get_mono_path_datadir(path) ||
+        get_mono_path_unix(INSTALL_DATADIR "/wine/mono/wine-mono-" WINE_MONO_VERSION, path) ||
+        (strcmp(INSTALL_DATADIR, "/usr/share") &&
+         get_mono_path_unix("/usr/share/wine/mono/wine-mono-" WINE_MONO_VERSION, path)) ||
+        get_mono_path_unix("/opt/wine/mono/wine-mono-" WINE_MONO_VERSION, path);
 }
 
 struct InstalledRuntimeEnum
diff --git a/dlls/mscoree/mscoree_main.c b/dlls/mscoree/mscoree_main.c
index 198e2792918..7bb63592882 100644
--- a/dlls/mscoree/mscoree_main.c
+++ b/dlls/mscoree/mscoree_main.c
@@ -682,7 +682,7 @@ static BOOL install_wine_mono(void)
     LONG len;
     BOOL ret;
 
-    static const char* mono_version = "4.8.1";
+    static const char* mono_version = WINE_MONO_VERSION;
     static const char* mono_upgrade_code = "{DE624609-C6B5-486A-9274-EF0B854F6BC5}";
 
     static const WCHAR controlW[] = {'\\','c','o','n','t','r','o','l','.','e','x','e',0};
diff --git a/dlls/mscoree/mscoree_private.h b/dlls/mscoree/mscoree_private.h
index 4e7ee013934..77610994359 100644
--- a/dlls/mscoree/mscoree_private.h
+++ b/dlls/mscoree/mscoree_private.h
@@ -45,6 +45,8 @@ extern HRESULT assembly_get_runtime_version(ASSEMBLY *assembly, LPSTR *version)
 extern HRESULT assembly_get_vtable_fixups(ASSEMBLY *assembly, VTableFixup **fixups, DWORD *count) DECLSPEC_HIDDEN;
 extern HRESULT assembly_get_native_entrypoint(ASSEMBLY *assembly, NativeEntryPointFunc *func) DECLSPEC_HIDDEN;
 
+#define WINE_MONO_VERSION "4.8.1"
+
 /* Mono embedding */
 typedef struct _MonoDomain MonoDomain;
 typedef struct _MonoAssembly MonoAssembly;