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acertmgr: implement deployment error handling

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Remove the long-standing todo from cert_put and implement useful
error handling and defaults for certificate deployment. Also do
a separate try/expect for each deployed file on every single
certificate.
This commit is contained in:
Kishi85 2019-04-05 09:59:29 +02:00
parent 7c9e7f7d0c
commit 89be66dc87
2 changed files with 41 additions and 52 deletions
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8
README.md
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@ -99,11 +99,11 @@ By default the directory (work_dir) containing the working data (csr,certificate
| nsupdate_keyalgorithm | **d**,g | [dns.nsupdate] TSIG key algorithm to use for updates | HMAC-MD5.SIG-ALG.REG.INT |
| defaults: | **g** | Default deployment action settings used by all domains | |
| path | **d** | (deployment) deploy certificate data to the given file | |
| user | **d**,g(defaults) | (deployment) change the user of the file deployed at path to this value | |
| group | **d**,g(defaults) | (deployment) change the group of the file deployed at path to this value | |
| perm | **d**,g(defaults) | (deployment) change the permissions of the file deployed at path to this value | |
| format | **d**,g(defaults) | (deployment) deploy one or more of the following data to the file at path: key,crt,ca | |
| action | **d**,g(defaults) | (deployment) run the following action after deployment is finished. This command will be run in a shell and therefore supports shell syntax. | |
| user | **d**,g(defaults) | (deployment) change the user of the file deployed at path to this value (optional, defaults to acertmgr current effective user) | |
| group | **d**,g(defaults) | (deployment) change the group of the file deployed at path to this value (optional,defaults to acertmgr current effective group) | |
| perm | **d**,g(defaults) | (deployment) change the permissions of the file deployed at path to this value (optional, CAUTION: uses system defaults for new files) | |
| action | **d**,g(defaults) | (deployment) run the following action after deployment is finished. This command will be run in a shell and supports it's syntax. (optional) | |
Security
--------

85
acertmgr/__init__.py
View File

@ -70,52 +70,41 @@ def cert_get(settings):
# @param settings the domain's configuration options
# @return the action to be executed after the certificate update
def cert_put(settings):
# TODO error handling
ca_file = settings['ca_file']
crt_user = settings['user']
crt_group = settings['group']
crt_perm = settings['perm']
crt_path = settings['path']
crt_format = settings['format'].split(",")
crt_format = [str.strip(x) for x in crt_format]
crt_action = settings['action']
if 'path' not in settings:
raise ValueError('Deployment settings are missing required element: path')
if 'format' not in settings:
raise ValueError('Deployment settings are missing required element: format')
key_file = settings['key_file']
crt_final = settings['cert_file']
with io.open(crt_path, "w+") as crt_fd:
for fmt in crt_format:
with io.open(settings['path'], "w+") as crt_fd:
for fmt in [str.strip(x) for x in settings['format'].split(",")]:
if fmt == "crt":
src_fd = io.open(crt_final, "r")
crt_fd.write(src_fd.read())
src_fd.close()
if fmt == "key":
src_fd = io.open(key_file, "r")
crt_fd.write(src_fd.read())
src_fd.close()
if fmt == "ca":
if not os.path.isfile(ca_file):
raise FileNotFoundError("The CA certificate file (%s) is missing!" % ca_file)
src_fd = io.open(ca_file, "r")
crt_fd.write(src_fd.read())
src_fd.close()
with io.open(settings['cert_file'], "r") as src_fd:
crt_fd.write(src_fd.read())
elif fmt == "key":
with io.open(settings['key_file'], "r") as src_fd:
crt_fd.write(src_fd.read())
elif fmt == "ca":
with io.open(settings['ca_file'], "r") as src_fd:
crt_fd.write(src_fd.read())
else:
# TODO error handling
pass
log("Ignored unknown deployment format key: {}".format(fmt), warning=True)
# set owner and permissions
uid = pwd.getpwnam(crt_user).pw_uid
gid = grp.getgrnam(crt_group).gr_gid
try:
os.chown(crt_path, uid, gid)
except OSError:
log('Could not set certificate file ownership!', warning=True)
try:
os.chmod(crt_path, int(crt_perm, 8))
except OSError:
log('Could not set certificate file permissions!', warning=True)
# set owner and group
if 'user' in settings or 'group' in settings:
try:
uid = pwd.getpwnam(settings['user']).pw_uid if 'user' in settings else os.geteuid()
gid = grp.getgrnam(settings['group']).gr_gid if 'group' in settings else os.getegid()
os.chown(settings['path'], uid, gid)
except OSError as e:
log('Could not set certificate file ownership', e, warning=True)
# set permissions
if 'perm' in settings:
try:
os.chmod(settings['path'], int(settings['perm'], 8))
except OSError as e:
log('Could not set certificate file permissions', e, warning=True)
return crt_action
return settings['action']
def cert_revoke(cert, configs, fallback_authority, reason=None):
@ -169,15 +158,15 @@ def main():
# deploy new certificates after all are renewed
deployment_success = True
for config in domainconfigs:
try:
for cfg in config['actions']:
for cfg in config['actions']:
try:
if not tools.target_is_current(cfg['path'], config['cert_file']):
log("Updating '{}' due to newer version".format(cfg['path']))
actions.add(cert_put(cfg))
except Exception as e:
log("Certificate deployment failed", e, error=True)
exceptions.append(e)
deployment_success = False
log("Updated '{}' due to newer version".format(cfg['path']))
except Exception as e:
log("Certificate deployment to {} failed".format(cfg['path']), e, error=True)
exceptions.append(e)
deployment_success = False
# run post-update actions
for action in actions: