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+//
+// Copyright 2019, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+// * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+// * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+// * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+//
+// Alternatively, this software may be distributed under the terms of the
+// GNU General Public License ("GPL") version 2 as published by the Free
+// Software Foundation.
+//
+
+use super::cros_sysinfo;
+use super::tester::{self, OutputFormat, TestCase, TestEnv, TestResult};
+use super::utils::{self, LayoutNames};
+use flashrom::{FlashChip, Flashrom, FlashromCmd};
+use std::collections::{HashMap, HashSet};
+use std::fs::File;
+use std::io::{BufRead, Write};
+
+const LAYOUT_FILE: &'static str = "/tmp/layout.file";
+
+/// Iterate over tests, yielding only those tests with names matching filter_names.
+///
+/// If filter_names is None, all tests will be run. None is distinct from Some(∅);
+// Some(∅) runs no tests.
+///
+/// Name comparisons are performed in lower-case: values in filter_names must be
+/// converted to lowercase specifically.
+///
+/// When an entry in filter_names matches a test, it is removed from that set.
+/// This allows the caller to determine if any entries in the original set failed
+/// to match any test, which may be user error.
+fn filter_tests<'n, 't: 'n, T: TestCase>(
+ tests: &'t [T],
+ filter_names: &'n mut Option<HashSet<String>>,
+) -> impl 'n + Iterator<Item = &'t T> {
+ tests.iter().filter(move |test| match filter_names {
+ // Accept all tests if no names are given
+ None => true,
+ Some(ref mut filter_names) => {
+ // Pop a match to the test name from the filter set, retaining the test
+ // if there was a match.
+ filter_names.remove(&test.get_name().to_lowercase())
+ }
+ })
+}
+
+/// Run tests.
+///
+/// Only returns an Error if there was an internal error; test failures are Ok.
+///
+/// test_names is the case-insensitive names of tests to run; if None, then all
+/// tests are run. Provided names that don't match any known test will be logged
+/// as a warning.
+pub fn generic<'a, TN: Iterator<Item = &'a str>>(
+ path: &str,
+ fc: FlashChip,
+ print_layout: bool,
+ output_format: OutputFormat,
+ test_names: Option<TN>,
+) -> Result<(), Box<dyn std::error::Error>> {
+ let p = path.to_string();
+ let cmd = FlashromCmd { path: p, fc };
+
+ utils::ac_power_warning();
+
+ info!("Calculate ROM partition sizes & Create the layout file.");
+ let rom_sz: i64 = cmd.get_size()?;
+ let layout_sizes = utils::get_layout_sizes(rom_sz)?;
+ {
+ let mut f = File::create(LAYOUT_FILE)?;
+ let mut buf: Vec<u8> = vec![];
+ utils::construct_layout_file(&mut buf, &layout_sizes)?;
+
+ f.write_all(&buf)?;
+ if print_layout {
+ info!(
+ "Dumping layout file as requested:\n{}",
+ String::from_utf8_lossy(&buf)
+ );
+ }
+ }
+
+ info!(
+ "Record crossystem information.\n{}",
+ utils::collect_crosssystem()?
+ );
+
+ // Register tests to run:
+ let tests: &[&dyn TestCase] = &[
+ &("Get_device_name", get_device_name_test),
+ &("Coreboot_ELOG_sanity", elog_sanity_test),
+ &("Host_is_ChromeOS", host_is_chrome_test),
+ &("Toggle_WP", wp_toggle_test),
+ &("Erase_and_Write", erase_write_test),
+ &("Fail_to_verify", verify_fail_test),
+ &("Lock", lock_test),
+ &("Lock_top_quad", partial_lock_test(LayoutNames::TopQuad)),
+ &(
+ "Lock_bottom_quad",
+ partial_lock_test(LayoutNames::BottomQuad),
+ ),
+ &(
+ "Lock_bottom_half",
+ partial_lock_test(LayoutNames::BottomHalf),
+ ),
+ &("Lock_top_half", partial_lock_test(LayoutNames::TopHalf)),
+ ];
+
+ // Limit the tests to only those requested, unless none are requested
+ // in which case all tests are included.
+ let mut filter_names: Option<HashSet<String>> = if let Some(names) = test_names {
+ Some(names.map(|s| s.to_lowercase()).collect())
+ } else {
+ None
+ };
+ let tests = filter_tests(tests, &mut filter_names);
+
+ // ------------------------.
+ // Run all the tests and collate the findings:
+ let results = tester::run_all_tests(fc, &cmd, tests);
+
+ // Any leftover filtered names were specified to be run but don't exist
+ for leftover in filter_names.iter().flatten() {
+ warn!("No test matches filter name \"{}\"", leftover);
+ }
+
+ let chip_name = flashrom::name(&cmd)
+ .map(|x| format!("vendor=\"{}\" name=\"{}\"", x.0, x.1))
+ .unwrap_or("<Unknown chip>".into());
+ let os_rel = sys_info::os_release().unwrap_or("<Unknown OS>".to_string());
+ let system_info = cros_sysinfo::system_info().unwrap_or("<Unknown System>".to_string());
+ let bios_info = cros_sysinfo::bios_info().unwrap_or("<Unknown BIOS>".to_string());
+
+ let meta_data = tester::ReportMetaData {
+ chip_name: chip_name,
+ os_release: os_rel,
+ system_info: system_info,
+ bios_info: bios_info,
+ };
+ tester::collate_all_test_runs(&results, meta_data, output_format);
+ Ok(())
+}
+
+fn get_device_name_test(env: &mut TestEnv) -> TestResult {
+ // Success means we got something back, which is good enough.
+ flashrom::name(env.cmd)?;
+ Ok(())
+}
+
+fn wp_toggle_test(env: &mut TestEnv) -> TestResult {
+ // NOTE: This is not strictly a 'test' as it is allowed to fail on some platforms.
+ // However, we will warn when it does fail.
+ // List the write-protected regions of flash.
+ match flashrom::wp_list(env.cmd) {
+ Ok(list_str) => info!("\n{}", list_str),
+ Err(e) => warn!("{}", e),
+ };
+ // Fails if unable to set either one
+ env.wp.set_hw(false)?;
+ env.wp.set_sw(false)?;
+ Ok(())
+}
+
+fn erase_write_test(env: &mut TestEnv) -> TestResult {
+ if !env.is_golden() {
+ info!("Memory has been modified; reflashing to ensure erasure can be detected");
+ env.ensure_golden()?;
+ }
+
+ // With write protect enabled erase should fail.
+ env.wp.set_sw(true)?.set_hw(true)?;
+ if env.erase().is_ok() {
+ info!("Flashrom returned Ok but this may be incorrect; verifying");
+ if !env.is_golden() {
+ return Err("Hardware write protect asserted however can still erase!".into());
+ }
+ info!("Erase claimed to succeed but verify is Ok; assume erase failed");
+ }
+
+ // With write protect disabled erase should succeed.
+ env.wp.set_hw(false)?.set_sw(false)?;
+ env.erase()?;
+ if env.is_golden() {
+ return Err("Successful erase didn't modify memory".into());
+ }
+
+ Ok(())
+}
+
+fn lock_test(env: &mut TestEnv) -> TestResult {
+ if !env.wp.can_control_hw_wp() {
+ return Err("Lock test requires ability to control hardware write protect".into());
+ }
+
+ env.wp.set_hw(false)?.set_sw(true)?;
+ // Toggling software WP off should work when hardware is off.
+ // Then enable again for another go.
+ env.wp.push().set_sw(false)?;
+
+ env.wp.set_hw(true)?;
+ // Clearing should fail when hardware is enabled
+ if env.wp.set_sw(false).is_ok() {
+ return Err("Software WP was reset despite hardware WP being enabled".into());
+ }
+ Ok(())
+}
+
+fn elog_sanity_test(env: &mut TestEnv) -> TestResult {
+ // Check that the elog contains *something*, as an indication that Coreboot
+ // is actually able to write to the Flash. Because this invokes mosys on the
+ // host, it doesn't make sense to run for other chips.
+ if env.chip_type() != FlashChip::HOST {
+ info!("Skipping ELOG sanity check for non-host chip");
+ return Ok(());
+ }
+ // mosys reads the flash, it should be back in the golden state
+ env.ensure_golden()?;
+ // Output is one event per line, drop empty lines in the interest of being defensive.
+ let event_count = cros_sysinfo::eventlog_list()?
+ .lines()
+ .filter(|l| !l.is_empty())
+ .count();
+
+ if event_count == 0 {
+ Err("ELOG contained no events".into())
+ } else {
+ Ok(())
+ }
+}
+
+fn host_is_chrome_test(_env: &mut TestEnv) -> TestResult {
+ let release_info = if let Ok(f) = File::open("/etc/os-release") {
+ let buf = std::io::BufReader::new(f);
+ parse_os_release(buf.lines().flatten())
+ } else {
+ info!("Unable to read /etc/os-release to probe system information");
+ HashMap::new()
+ };
+
+ match release_info.get("ID") {
+ Some(id) if id == "chromeos" || id == "chromiumos" => Ok(()),
+ oid => {
+ let id = match oid {
+ Some(s) => s,
+ None => "UNKNOWN",
+ };
+ Err(format!(
+ "Test host os-release \"{}\" should be but is not chromeos",
+ id
+ )
+ .into())
+ }
+ }
+}
+
+fn partial_lock_test(section: LayoutNames) -> impl Fn(&mut TestEnv) -> TestResult {
+ move |env: &mut TestEnv| {
+ // Need a clean image for verification
+ env.ensure_golden()?;
+
+ let (name, start, len) = utils::layout_section(env.layout(), section);
+ // Disable software WP so we can do range protection, but hardware WP
+ // must remain enabled for (most) range protection to do anything.
+ env.wp.set_hw(false)?.set_sw(false)?;
+ flashrom::wp_range(env.cmd, (start, len), true)?;
+ env.wp.set_hw(true)?;
+
+ let rws = flashrom::ROMWriteSpecifics {
+ layout_file: Some(LAYOUT_FILE),
+ write_file: Some(env.random_data_file()),
+ name_file: Some(name),
+ };
+ if flashrom::write_file_with_layout(env.cmd, &rws).is_ok() {
+ return Err(
+ "Section should be locked, should not have been overwritable with random data"
+ .into(),
+ );
+ }
+ if !env.is_golden() {
+ return Err("Section didn't lock, has been overwritten with random data!".into());
+ }
+ Ok(())
+ }
+}
+
+fn verify_fail_test(env: &mut TestEnv) -> TestResult {
+ // Comparing the flash contents to random data says they're not the same.
+ match env.verify(env.random_data_file()) {
+ Ok(_) => Err("Verification says flash is full of random data".into()),
+ Err(_) => Ok(()),
+ }
+}
+
+/// Ad-hoc parsing of os-release(5); mostly according to the spec,
+/// but ignores quotes and escaping.
+fn parse_os_release<I: IntoIterator<Item = String>>(lines: I) -> HashMap<String, String> {
+ fn parse_line(line: String) -> Option<(String, String)> {
+ if line.is_empty() || line.starts_with('#') {
+ return None;
+ }
+
+ let delimiter = match line.find('=') {
+ Some(idx) => idx,
+ None => {
+ warn!("os-release entry seems malformed: {:?}", line);
+ return None;
+ }
+ };
+ Some((
+ line[..delimiter].to_owned(),
+ line[delimiter + 1..].to_owned(),
+ ))
+ }
+
+ lines.into_iter().filter_map(parse_line).collect()
+}
+
+#[test]
+fn test_parse_os_release() {
+ let lines = [
+ "BUILD_ID=12516.0.0",
+ "# this line is a comment followed by an empty line",
+ "",
+ "ID_LIKE=chromiumos",
+ "ID=chromeos",
+ "VERSION=79",
+ "EMPTY_VALUE=",
+ ];
+ let map = parse_os_release(lines.iter().map(|&s| s.to_owned()));
+
+ fn get<'a, 'b>(m: &'a HashMap<String, String>, k: &'b str) -> Option<&'a str> {
+ m.get(k).map(|s| s.as_ref())
+ }
+
+ assert_eq!(get(&map, "ID"), Some("chromeos"));
+ assert_eq!(get(&map, "BUILD_ID"), Some("12516.0.0"));
+ assert_eq!(get(&map, "EMPTY_VALUE"), Some(""));
+ assert_eq!(get(&map, ""), None);
+}
+
+#[test]
+fn test_name_filter() {
+ let test_one = ("Test One", |_: &mut TestEnv| Ok(()));
+ let test_two = ("Test Two", |_: &mut TestEnv| Ok(()));
+ let tests: &[&dyn TestCase] = &[&test_one, &test_two];
+
+ let mut names = None;
+ // All tests pass through
+ assert_eq!(filter_tests(tests, &mut names).count(), 2);
+
+ names = Some(["test two"].iter().map(|s| s.to_string()).collect());
+ // Filtered out test one
+ assert_eq!(filter_tests(tests, &mut names).count(), 1);
+
+ names = Some(["test three"].iter().map(|s| s.to_string()).collect());
+ // No tests emitted
+ assert_eq!(filter_tests(tests, &mut names).count(), 0);
+ // Name got left behind because no test matched it
+ assert_eq!(names.unwrap().len(), 1);
+}