Module: Chef::ReservedNames::Win32::API::Installer
- Extended by:
- Chef::ReservedNames::Win32, Chef::ReservedNames::Win32::API
- Included in:
- Provider::Package::Windows::MSI
- Defined in:
- lib/chef/win32/api/installer.rb
Instance Method Summary collapse
-
#get_installed_version(product_code) ⇒ Object
All installed product_codes should have a VersionString Returns a version if installed, nil if not installed.
-
#get_product_property(package_path, property_name) ⇒ Object
Opens a Microsoft Installer (MSI) file from an absolute path and returns the specified property.
-
#open_package(package_path) ⇒ Object
Opens a Microsoft Installer (MSI) file from an absolute path and returns a pointer to a handle Remember to close the handle with msi_close_handle().
Instance Method Details
#get_installed_version(product_code) ⇒ Object
All installed product_codes should have a VersionString Returns a version if installed, nil if not installed
132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 |
# File 'lib/chef/win32/api/installer.rb', line 132 def get_installed_version(product_code) version = 0.chr version_length = FFI::Buffer.new(:long).write_long(0) status = msi_get_product_info(product_code, "VersionString", version, version_length) return nil if status == 1605 # ERROR_UNKNOWN_PRODUCT (0x645) # We expect error ERROR_MORE_DATA (234) here because we passed a buffer length of 0 if status != 234 msg = "msi_get_product_info: product code '#{product_code}' returned unknown error #{status} when retrieving VersionString: " msg << Chef::ReservedNames::Win32::Error.(status) raise Chef::Exceptions::Package, msg end # We could fetch the product version now that we know the variable length, but we don't need it here. version_length = FFI::Buffer.new(:long).write_long(version_length.read_long + 1) version = 0.chr * version_length.read_long status = msi_get_product_info(product_code, "VersionString", version, version_length) if status != 0 msg = "msi_get_product_info: product code '#{product_code}' returned unknown error #{status} when retrieving VersionString: " msg << Chef::ReservedNames::Win32::Error.(status) raise Chef::Exceptions::Package, msg end version.chomp(0.chr) end |
#get_product_property(package_path, property_name) ⇒ Object
Opens a Microsoft Installer (MSI) file from an absolute path and returns the specified property
81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 |
# File 'lib/chef/win32/api/installer.rb', line 81 def get_product_property(package_path, property_name) pkg_ptr = open_package(package_path) buffer = 0.chr buffer_length = FFI::Buffer.new(:long).write_long(0) # Fetch the length of the property status = msi_get_product_property(pkg_ptr.read_pointer, property_name, buffer, buffer_length) # We expect error ERROR_MORE_DATA (234) here because we passed a buffer length of 0 if status != 234 msg = "msi_get_product_property: returned unknown error #{status} when retrieving #{property_name}: " msg << Chef::ReservedNames::Win32::Error.(status) raise Chef::Exceptions::Package, msg end buffer_length = FFI::Buffer.new(:long).write_long(buffer_length.read_long + 1) buffer = 0.chr * buffer_length.read_long # Fetch the property status = msi_get_product_property(pkg_ptr.read_pointer, property_name, buffer, buffer_length) if status != 0 msg = "msi_get_product_property: returned unknown error #{status} when retrieving #{property_name}: " msg << Chef::ReservedNames::Win32::Error.(status) raise Chef::Exceptions::Package, msg end msi_close_handle(pkg_ptr.read_pointer) buffer.chomp(0.chr) end |
#open_package(package_path) ⇒ Object
Opens a Microsoft Installer (MSI) file from an absolute path and returns a pointer to a handle Remember to close the handle with msi_close_handle()
115 116 117 118 119 120 121 122 123 124 125 126 127 128 |
# File 'lib/chef/win32/api/installer.rb', line 115 def open_package(package_path) # MsiOpenPackage expects a perfect absolute Windows path to the MSI raise ArgumentError, "Provided path '#{package_path}' must be an absolute path" unless Pathname.new(package_path).absolute? pkg_ptr = FFI::MemoryPointer.new(:pointer, 4) status = msi_open_package(package_path, 1, pkg_ptr) case status when 0 # success else raise Chef::Exceptions::Package, "msi_open_package: unexpected status #{status}: #{Chef::ReservedNames::Win32::Error.(status)}" end pkg_ptr end |