tools: Add script to create UAC manifests for Windows

This is copied from the GTK source tree to put into our builds so that
we can generate a manifest file to pacify UAC on Windows for 32-bit
builds, as UAC will kill any 32-bit processes that it believes will
be an installer or will alter the system in any ways.

This will be used to fix running the custom-dispatch test program on
32-bit Windows builds.

tools/generate-uac-manifest.py

@@ -0,0 +1,137 @@
+#!/usr/bin/env python3
+#
+# Copyright © 2021 Chun-wei Fan.
+#
+# SPDX-License-Identifier: LGPL-2.1-or-later
+#
+# Original author: Chun-wei Fan <fanc999@yahoo.com.tw>
+
+"""
+This script generates a Windows manifest file and optionally a resource file to
+determine whether a specified program requires UAC elevation
+"""
+
+import os
+import argparse
+
+DOMAIN_NAME = "gnome"
+
+
+def main():
+    parser = argparse.ArgumentParser(description=__doc__)
+    parser.add_argument(
+        "-p", "--package", required=True, help="package name of the executable"
+    )
+    parser.add_argument("-n", "--name", required=True, help="name of executable")
+    parser.add_argument(
+        "--pkg-version", required=True, dest="version", help="version of package"
+    )
+    parser.add_argument(
+        "--require-admin",
+        action="store_true",
+        dest="admin",
+        default=False,
+        help="require admin access to application",
+    )
+    parser.add_argument(
+        "--input-resource-file",
+        dest="resource",
+        default=None,
+        help="existing .rc file to embed UAC manifest (do not generate a new .rc file), must have included windows.h in it",
+    )
+    parser.add_argument(
+        "--output-dir",
+        dest="outdir",
+        default=None,
+        help="directory to output resulting files",
+    )
+    args = parser.parse_args()
+
+    if args.resource is not None:
+        if not os.path.isfile(args.resource):
+            raise FileNotFoundError(
+                "Specified resource file '%s' does not exist" % args.resource
+            )
+
+    generate_manifest(args.package, args.name, args.version, args.admin, args.outdir)
+    write_rc_file(args.name, args.resource, args.outdir)
+
+
+def generate_manifest(package, name, version, admin, outdir):
+    if version.count(".") == 0:
+        manifest_package_version = version + ".0.0.0"
+    elif version.count(".") == 1:
+        manifest_package_version = version + ".0.0"
+    elif version.count(".") == 2:
+        manifest_package_version = version + ".0"
+    elif version.count(".") == 3:
+        manifest_package_version = version
+    else:
+        parts = version.split(".")
+        manifest_package_version = ""
+        for x in (0, 1, 2, 3):
+            if x == 0:
+                manifest_package_version += parts[x]
+            else:
+                manifest_package_version += "." + parts[x]
+
+    if outdir is not None:
+        output_file_base_name = os.path.join(outdir, name)
+    else:
+        output_file_base_name = name
+
+    outfile = open(output_file_base_name + ".exe.manifest", "w+")
+    outfile.write("<?xml version='1.0' encoding='UTF-8' standalone='yes'?>\n")
+    outfile.write(
+        "<assembly xmlns='urn:schemas-microsoft-com:asm.v1' manifestVersion='1.0'>\n"
+    )
+    outfile.write("  <assemblyIdentity version='%s'\n" % manifest_package_version)
+    outfile.write("    processorArchitecture='*'\n")
+    outfile.write("    name='%s.%s.%s.exe'\n" % (DOMAIN_NAME, package, name))
+    outfile.write("    type='win32' />\n")
+    outfile.write("  <trustInfo xmlns='urn:schemas-microsoft-com:asm.v3'>\n")
+    outfile.write("    <security>\n")
+    outfile.write("      <requestedPrivileges>\n")
+    outfile.write("        <requestedExecutionLevel\n")
+
+    if admin:
+        outfile.write("          level='requireAdministrator'\n")
+    else:
+        outfile.write("          level='asInvoker'\n")
+
+    outfile.write("          uiAccess='false' />\n")
+    outfile.write("      </requestedPrivileges>\n")
+    outfile.write("    </security>\n")
+    outfile.write("  </trustInfo>\n")
+    outfile.write("</assembly>\n")
+    outfile.close()
+
+
+def write_rc_file(name, resource, outdir):
+    if outdir is not None:
+        output_file_base_name = os.path.join(outdir, name)
+    else:
+        output_file_base_name = name
+
+    if resource is None:
+        outfile = open(output_file_base_name + ".rc", "w+")
+        outfile.write("#define WIN32_LEAN_AND_MEAN\n")
+        outfile.write("#include <windows.h>\n")
+    else:
+        if resource != output_file_base_name + ".rc":
+            outfile = open(output_file_base_name + ".rc", "w+")
+        else:
+            outfile = open(output_file_base_name + ".final.rc", "w+")
+        srcfile = open(resource, "r")
+        outfile.write(srcfile.read())
+        srcfile.close()
+
+    outfile.write("\n")
+    outfile.write(
+        'CREATEPROCESS_MANIFEST_RESOURCE_ID RT_MANIFEST "%s.exe.manifest"' % name
+    )
+    outfile.close()
+
+
+if __name__ == "__main__":
+    main()

tools/meson.build

@@ -24,3 +24,11 @@ if host_system != 'windows'
 endif
 
 gen_visibility_macros = find_program('gen-visibility-macros.py')
+
+# This is only needed for 32-bit (x86) Windows builds
+if host_system == 'windows' and host_machine.cpu_family() == 'x86'
+  embed_uac_manifest = true
+  gen_uac_manifest = find_program('generate-uac-manifest.py')
+else
+  embed_uac_manifest = false
+endif