# Path: elbepack/shellhelper.py
# def system(cmd, allow_fail=False, env_add=None):
#     """system() - Execute cmd in a shell.
# 
#     Throws a CommandError if cmd returns none-zero and allow_fail=False
# 
#     --
# 
#     >>> system("true")
# 
#     >>> system("false", allow_fail=True)
# 
#     >>> system("$FALSE", env_add={"FALSE":"false"}) # doctest: +ELLIPSIS
#     Traceback (most recent call last):
#     ...
#     elbepack.shellhelper.CommandError: ...
# 
#     """
#     new_env = os.environ.copy()
#     if env_add:
#         new_env.update(env_add)
# 
#     ret = call(cmd, shell=True, env=new_env)
# 
#     if ret != 0:
#         if not allow_fail:
#             raise CommandError(cmd, ret)
# 
# class CommandError(Exception):
# 
#     def __init__(self, cmd, returncode):
#         super(CommandError, self).__init__(cmd, returncode)
#         self.returncode = returncode
#         self.cmd = cmd
# 
#     def __str__(self):
#         return "Error: %d returned from Command %s" % (
#             self.returncode, self.cmd)


import hashlib
from elbepack.shellhelper import system, CommandError
        buf = f.read(65536)
        while buf:
            m.update(buf)
            buf = f.read(65536)
    if m.hexdigest() != expected_hash:
        raise HashValidationFailed(
                'file "%s" failed to verify ! got: "%s" expected: "%s"' %
                (fname, m.hexdigest(), expected_hash))

class HashValidator:
    def __init__(self, base_url):
        self.hashes = {}
        self.base_url = base_url

    def insert_fname_hash(self, algo, fname, hash_val):
        if algo not in self.hashes:
            self.hashes[algo] = {}

        self.hashes[algo][fname] = hash_val

    def validate_file(self, upstream_fname, local_fname):
        if upstream_fname not in self.hashes['SHA256']:
            raise HashValidationFailed('Value to expect for "%s" is not known')

        validate_sha256(local_fname, self.hashes['SHA256'][upstream_fname])

    def download_and_validate_file(self, upstream_fname, local_fname):
        url = self.base_url + upstream_fname
        try:
            system('wget -O "%s" "%s"' % (local_fname, url))

# Path: elbepack/shellhelper.py
# def system(cmd, allow_fail=False, env_add=None):
#     """system() - Execute cmd in a shell.
# 
#     Throws a CommandError if cmd returns none-zero and allow_fail=False
# 
#     --
# 
#     >>> system("true")
# 
#     >>> system("false", allow_fail=True)
# 
#     >>> system("$FALSE", env_add={"FALSE":"false"}) # doctest: +ELLIPSIS
#     Traceback (most recent call last):
#     ...
#     elbepack.shellhelper.CommandError: ...
# 
#     """
#     new_env = os.environ.copy()
#     if env_add:
#         new_env.update(env_add)
# 
#     ret = call(cmd, shell=True, env=new_env)
# 
#     if ret != 0:
#         if not allow_fail:
#             raise CommandError(cmd, ret)
# 
# class CommandError(Exception):
# 
#     def __init__(self, cmd, returncode):
#         super(CommandError, self).__init__(cmd, returncode)
#         self.returncode = returncode
#         self.cmd = cmd
# 
#     def __str__(self):
#         return "Error: %d returned from Command %s" % (
#             self.returncode, self.cmd)


# Path: elbepack/hashes.py
import hashlib
from elbepack.shellhelper import system, CommandError

        buf = f.read(65536)
        while buf:
            m.update(buf)
            buf = f.read(65536)
    if m.hexdigest() != expected_hash:
        raise HashValidationFailed(
                'file "%s" failed to verify ! got: "%s" expected: "%s"' %
                (fname, m.hexdigest(), expected_hash))

class HashValidator:
    def __init__(self, base_url):
        self.hashes = {}
        self.base_url = base_url

    def insert_fname_hash(self, algo, fname, hash_val):
        if algo not in self.hashes:
            self.hashes[algo] = {}

        self.hashes[algo][fname] = hash_val

    def validate_file(self, upstream_fname, local_fname):
        if upstream_fname not in self.hashes['SHA256']:
            raise HashValidationFailed('Value to expect for "%s" is not known')

        validate_sha256(local_fname, self.hashes['SHA256'][upstream_fname])

    def download_and_validate_file(self, upstream_fname, local_fname):
        url = self.base_url + upstream_fname
        try:
            system('wget -O "%s" "%s"' % (local_fname, url))

        except CommandError: