diff options
Diffstat (limited to 'test/create-sys-script.py')
-rwxr-xr-x | test/create-sys-script.py | 179 |
1 files changed, 179 insertions, 0 deletions
diff --git a/test/create-sys-script.py b/test/create-sys-script.py new file mode 100755 index 0000000..d03ca2c --- /dev/null +++ b/test/create-sys-script.py @@ -0,0 +1,179 @@ +#!/usr/bin/env python3 +# SPDX-License-Identifier: LGPL-2.1+ + +OUTFILE_HEADER = """#!/usr/bin/env python3 +# SPDX-License-Identifier: LGPL-2.1+ +# +# create-sys-script.py +# +# © 2017 Canonical Ltd. +# Author: Dan Streetman <dan.streetman@canonical.com> +""" + +# Use this only to (re-)create the test/sys-script.py script, +# after adding or modifying anything in the test/sys/ directory + + +import os, sys +import stat +import tempfile +import filecmp +import subprocess + +OUTFILE_MODE = 0o775 + +OUTFILE_FUNCS = r""" +import os, sys +import shutil + +def d(path, mode): + os.mkdir(path, mode) + +def l(path, src): + os.symlink(src, path) + +def f(path, mode, contents): + with open(path, "wb") as f: + f.write(contents) + os.chmod(path, mode) +""" + +OUTFILE_MAIN = """ +if len(sys.argv) < 2: + exit("Usage: {} <target dir>".format(sys.argv[0])) + +if not os.path.isdir(sys.argv[1]): + exit("Target dir {} not found".format(sys.argv[1])) + +os.chdir(sys.argv[1]) + +if os.path.exists('sys'): + shutil.rmtree('sys') +""" + + +def handle_dir(outfile, path): + m = os.lstat(path).st_mode & 0o777 + outfile.write(f"d('{path}', {m:#o})\n") + + +def handle_link(outfile, path): + src = os.readlink(path) + outfile.write(f"l('{path}', '{src}')\n") + + +def escape_single_quotes(b): + # remove the b'' wrapping each line repr + r = repr(b)[2:-1] + # python escapes all ' only if there are ' and " in the string + if '"' not in r: + r = r.replace("'", r"\'") + # return line with all ' escaped + return r + + +def handle_file(outfile, path): + m = os.lstat(path).st_mode & 0o777 + with open(path, "rb") as f: + b = f.read() + if b.count(b"\n") > 1: + r = "\n".join( escape_single_quotes(l) for l in b.split(b"\n") ) + r = f"b'''{r}'''" + else: + r = repr(b) + outfile.write(f"f('{path}', {m:#o}, {r})\n") + + +def process_sysdir(outfile): + for (dirpath, dirnames, filenames) in os.walk('sys'): + handle_dir(outfile, dirpath) + for d in dirnames: + path = os.path.join(dirpath, d) + if stat.S_ISLNK(os.lstat(path).st_mode): + handle_link(outfile, path) + for f in filenames: + path = os.path.join(dirpath, f) + mode = os.lstat(path).st_mode + if stat.S_ISLNK(mode): + handle_link(outfile, path) + elif stat.S_ISREG(mode): + handle_file(outfile, path) + + +def verify_dir(tmpd, path_a): + path_b = os.path.join(tmpd, path_a) + mode_a = os.lstat(path_a).st_mode + mode_b = os.lstat(path_b).st_mode + if not stat.S_ISDIR(mode_b): + raise Exception("Not directory") + if (mode_a & 0o777) != (mode_b & 0o777): + raise Exception("Permissions mismatch") + + +def verify_link(tmpd, path_a): + path_b = os.path.join(tmpd, path_a) + if not stat.S_ISLNK(os.lstat(path_b).st_mode): + raise Exception("Not symlink") + if os.readlink(path_a) != os.readlink(path_b): + raise Exception("Symlink dest mismatch") + + +def verify_file(tmpd, path_a): + path_b = os.path.join(tmpd, path_a) + mode_a = os.lstat(path_a).st_mode + mode_b = os.lstat(path_b).st_mode + if not stat.S_ISREG(mode_b): + raise Exception("Not file") + if (mode_a & 0o777) != (mode_b & 0o777): + raise Exception("Permissions mismatch") + if not filecmp.cmp(path_a, path_b, shallow=False): + raise Exception("File contents mismatch") + + +def verify_script(tmpd): + any = False + for (dirpath, dirnames, filenames) in os.walk("sys"): + any = True + try: + path = dirpath + verify_dir(tmpd, path) + for d in dirnames: + path = os.path.join(dirpath, d) + if stat.S_ISLNK(os.lstat(path).st_mode): + verify_link(tmpd, path) + for f in filenames: + path = os.path.join(dirpath, f) + mode = os.lstat(path).st_mode + if stat.S_ISLNK(mode): + verify_link(tmpd, path) + elif stat.S_ISREG(mode): + verify_file(tmpd, path) + except Exception: + print(f'FAIL on "{path}"', file=sys.stderr) + raise + if not any: + exit('Nothing found!') + +if __name__ == "__main__": + if len(sys.argv) < 2: + exit('Usage: create-sys-script.py /path/to/test/') + + outfile = os.path.abspath(os.path.dirname(sys.argv[0]) + '/sys-script.py') + print(f'Creating {outfile} using contents of {sys.argv[1]}/sys') + + os.chdir(sys.argv[1]) + + with open(outfile, "w") as f: + os.chmod(outfile, OUTFILE_MODE) + f.write(OUTFILE_HEADER.replace(os.path.basename(sys.argv[0]), + os.path.basename(outfile))) + f.write(OUTFILE_FUNCS) + f.write(OUTFILE_MAIN) + process_sysdir(f) + + with tempfile.TemporaryDirectory() as tmpd: + print(f'Recreating sys/ using {outfile} at {tmpd}') + subprocess.check_call([outfile, tmpd]) + verify_script(tmpd) + + print(f'Verification successful, {outfile} is correct') |