From: "Erich E. Hoover" erich.e.hoover@gmail.com
msidb allows developers to extract "streams" (cabinet files) from a database with the "-x" mode flag followed by the filename for the stream in the database, example: msidb -d package.msi -x cabinet.cab
v2: Use Unicode functions.
Signed-off-by: Erich E. Hoover erich.e.hoover@gmail.com Signed-off-by: Hans Leidekker hans@codeweavers.com --- programs/msidb/main.c | 113 ++++++++++++++++++++++++++++++++++++++++-- 1 file changed, 109 insertions(+), 4 deletions(-)
diff --git a/programs/msidb/main.c b/programs/msidb/main.c index e2e4e77ce1..ee79b5c196 100644 --- a/programs/msidb/main.c +++ b/programs/msidb/main.c @@ -43,10 +43,12 @@ struct msidb_state WCHAR *table_folder; MSIHANDLE database_handle; BOOL add_streams; + BOOL extract_streams; BOOL kill_streams; BOOL create_database; BOOL import_tables; struct list add_stream_list; + struct list extract_stream_list; struct list kill_stream_list; struct list table_list; }; @@ -88,6 +90,7 @@ static void show_usage( void ) " -f folder Folder in which to open/save the tables.\n" " -i Import tables into database.\n" " -k file.cab Kill (remove) stream/cabinet file from _Streams table.\n" + " -x file.cab Extract stream/cabinet file from _Streams table.\n" ); }
@@ -98,20 +101,22 @@ static int valid_state( struct msidb_state *state ) FIXME( "GUI operation is not currently supported.\n" ); return 0; } - if (state->table_folder == NULL && !state->add_streams && !state->kill_streams) + if (state->table_folder == NULL && !state->add_streams && !state->kill_streams + && !state->extract_streams) { ERR( "No table folder specified (-f option).\n" ); show_usage(); return 0; } if (!state->create_database && !state->import_tables && !state->add_streams - && !state->kill_streams) + && !state->kill_streams && !state->extract_streams) { - ERR( "No mode flag specified (-a, -c, -i, -k).\n" ); + ERR( "No mode flag specified (-a, -c, -i, -k, -x).\n" ); show_usage(); return 0; } - if (list_empty( &state->table_list ) && !state->add_streams && !state->kill_streams) + if (list_empty( &state->table_list ) && !state->add_streams && !state->kill_streams + && !state->extract_streams) { ERR( "No tables specified.\n" ); return 0; @@ -153,6 +158,11 @@ static int process_argument( struct msidb_state *state, int i, int argc, WCHAR * state->kill_streams = TRUE; list_append( &state->kill_stream_list, argv[i + 1] ); return 2; + case 'x': + if (i + 1 >= argc) return 0; + state->extract_streams = TRUE; + list_append( &state->extract_stream_list, argv[i + 1] ); + return 2; default: break; } @@ -322,6 +332,97 @@ static int kill_streams( struct msidb_state *state ) return 1; }
+static int extract_stream( struct msidb_state *state, const WCHAR *stream_filename ) +{ + static const WCHAR select_command[] = + {'S','E','L','E','C','T',' ','D','a','t','a',' ','F','R','O','M',' ','_','S','t','r','e','a','m','s',' ', + 'W','H','E','R','E',' ','N','a','m','e',' ','=',' ','?',0}; + HANDLE file = INVALID_HANDLE_VALUE; + MSIHANDLE view = 0, record = 0; + DWORD read_size, write_size; + char buffer[1024]; + UINT ret; + + file = CreateFileW( stream_filename, GENERIC_WRITE, FILE_SHARE_READ | FILE_SHARE_WRITE, + NULL, CREATE_NEW, FILE_ATTRIBUTE_NORMAL, NULL ); + if (file == INVALID_HANDLE_VALUE) + { + ret = ERROR_FILE_NOT_FOUND; + ERR( "Failed to open destination file %s.\n", wine_dbgstr_w(stream_filename) ); + goto cleanup; + } + ret = MsiDatabaseOpenViewW( state->database_handle, select_command, &view ); + if (ret != ERROR_SUCCESS) + { + ERR( "Failed to open _Streams table.\n" ); + goto cleanup; + } + record = MsiCreateRecord( 1 ); + if (record == 0) + { + ERR( "Failed to create MSI record.\n" ); + ret = ERROR_OUTOFMEMORY; + goto cleanup; + } + ret = MsiRecordSetStringW( record, 1, stream_filename ); + if (ret != ERROR_SUCCESS) + { + ERR( "Failed to add stream filename to MSI record.\n" ); + goto cleanup; + } + ret = MsiViewExecute( view, record ); + if (ret != ERROR_SUCCESS) + { + ERR( "Failed to query stream from _Streams table.\n" ); + goto cleanup; + } + MsiCloseHandle( record ); + record = 0; + ret = MsiViewFetch( view, &record ); + if (ret != ERROR_SUCCESS) + { + ERR( "Failed to query row from _Streams table.\n" ); + goto cleanup; + } + read_size = sizeof(buffer); + while (read_size == sizeof(buffer)) + { + ret = MsiRecordReadStream( record, 1, buffer, &read_size ); + if (ret != ERROR_SUCCESS) + { + ERR( "Failed to read stream from _Streams table.\n" ); + goto cleanup; + } + if (!WriteFile( file, buffer, read_size, &write_size, NULL ) || read_size != write_size) + { + ret = ERROR_WRITE_FAULT; + ERR( "Failed to write stream to destination file.\n" ); + goto cleanup; + } + } + +cleanup: + if (record) + MsiCloseHandle( record ); + if (view) + MsiViewClose( view ); + if (file != INVALID_HANDLE_VALUE) + CloseHandle( file ); + return (ret == ERROR_SUCCESS); +} + +static int extract_streams( struct msidb_state *state ) +{ + struct msidb_listentry *data; + + LIST_FOR_EACH_ENTRY( data, &state->extract_stream_list, struct msidb_listentry, entry ) + { + if (!extract_stream( state, data->name )) + return 0; /* failed, do not commit changes */ + } + return 1; +} + static int import_table( struct msidb_state *state, const WCHAR *table_name ) { const WCHAR format[] = { '%','.','8','s','.','i','d','t',0 }; /* truncate to 8 characters */ @@ -358,6 +459,7 @@ int wmain( int argc, WCHAR *argv[] )
memset( &state, 0x0, sizeof(state) ); list_init( &state.add_stream_list ); + list_init( &state.extract_stream_list ); list_init( &state.kill_stream_list ); list_init( &state.table_list ); /* process and validate all the command line flags */ @@ -377,6 +479,8 @@ int wmain( int argc, WCHAR *argv[] ) } if (state.add_streams && !add_streams( &state )) goto cleanup; /* failed, do not commit changes */ + if (state.extract_streams && !extract_streams( &state )) + goto cleanup; /* failed, do not commit changes */ if (state.import_tables && !import_tables( &state )) goto cleanup; /* failed, do not commit changes */ if (state.kill_streams && !kill_streams( &state )) @@ -386,6 +490,7 @@ int wmain( int argc, WCHAR *argv[] ) cleanup: close_database( &state, ret == 0 ); list_free( &state.add_stream_list ); + list_free( &state.extract_stream_list ); list_free( &state.kill_stream_list ); list_free( &state.table_list ); return ret;