diff options
Diffstat (limited to 'cloudinit/config/cc_ca_certs.py')
| -rw-r--r-- | cloudinit/config/cc_ca_certs.py | 45 |
1 files changed, 30 insertions, 15 deletions
diff --git a/cloudinit/config/cc_ca_certs.py b/cloudinit/config/cc_ca_certs.py index 64bc900e..3c453d91 100644 --- a/cloudinit/config/cc_ca_certs.py +++ b/cloudinit/config/cc_ca_certs.py @@ -16,11 +16,16 @@ can be removed from the system with the configuration option certificates must be specified using valid yaml. in order to specify a multiline certificate, the yaml multiline list syntax must be used +.. note:: + For Alpine Linux the "remove-defaults" functionality works if the + ca-certificates package is installed but not if the + ca-certificates-bundle package is installed. + **Internal name:** ``cc_ca_certs`` **Module frequency:** per instance -**Supported distros:** ubuntu, debian +**Supported distros:** alpine, debian, ubuntu **Config keys**:: @@ -36,6 +41,7 @@ can be removed from the system with the configuration option import os +from cloudinit import subp from cloudinit import util CA_CERT_PATH = "/usr/share/ca-certificates/" @@ -44,14 +50,14 @@ CA_CERT_CONFIG = "/etc/ca-certificates.conf" CA_CERT_SYSTEM_PATH = "/etc/ssl/certs/" CA_CERT_FULL_PATH = os.path.join(CA_CERT_PATH, CA_CERT_FILENAME) -distros = ['ubuntu', 'debian'] +distros = ['alpine', 'debian', 'ubuntu'] def update_ca_certs(): """ Updates the CA certificate cache on the current machine. """ - util.subp(["update-ca-certificates"], capture=False) + subp.subp(["update-ca-certificates"], capture=False) def add_ca_certs(certs): @@ -66,17 +72,23 @@ def add_ca_certs(certs): cert_file_contents = "\n".join([str(c) for c in certs]) util.write_file(CA_CERT_FULL_PATH, cert_file_contents, mode=0o644) - # Append cert filename to CA_CERT_CONFIG file. - # We have to strip the content because blank lines in the file - # causes subsequent entries to be ignored. (LP: #1077020) - orig = util.load_file(CA_CERT_CONFIG) - cur_cont = '\n'.join([line for line in orig.splitlines() - if line != CA_CERT_FILENAME]) - out = "%s\n%s\n" % (cur_cont.rstrip(), CA_CERT_FILENAME) + if os.stat(CA_CERT_CONFIG).st_size == 0: + # If the CA_CERT_CONFIG file is empty (i.e. all existing + # CA certs have been deleted) then simply output a single + # line with the cloud-init cert filename. + out = "%s\n" % CA_CERT_FILENAME + else: + # Append cert filename to CA_CERT_CONFIG file. + # We have to strip the content because blank lines in the file + # causes subsequent entries to be ignored. (LP: #1077020) + orig = util.load_file(CA_CERT_CONFIG) + cur_cont = '\n'.join([line for line in orig.splitlines() + if line != CA_CERT_FILENAME]) + out = "%s\n%s\n" % (cur_cont.rstrip(), CA_CERT_FILENAME) util.write_file(CA_CERT_CONFIG, out, omode="wb") -def remove_default_ca_certs(): +def remove_default_ca_certs(distro_name): """ Removes all default trusted CA certificates from the system. To actually apply the change you must also call L{update_ca_certs}. @@ -84,11 +96,14 @@ def remove_default_ca_certs(): util.delete_dir_contents(CA_CERT_PATH) util.delete_dir_contents(CA_CERT_SYSTEM_PATH) util.write_file(CA_CERT_CONFIG, "", mode=0o644) - debconf_sel = "ca-certificates ca-certificates/trust_new_crts select no" - util.subp(('debconf-set-selections', '-'), debconf_sel) + + if distro_name != 'alpine': + debconf_sel = ( + "ca-certificates ca-certificates/trust_new_crts " + "select no") + subp.subp(('debconf-set-selections', '-'), debconf_sel) -def handle(name, cfg, _cloud, log, _args): +def handle(name, cfg, cloud, log, _args): """ Call to handle ca-cert sections in cloud-config file. @@ -110,7 +125,7 @@ def handle(name, cfg, _cloud, log, _args): # default trusted CA certs first. if ca_cert_cfg.get("remove-defaults", False): log.debug("Removing default certificates") - remove_default_ca_certs() + remove_default_ca_certs(cloud.distro.name) # If we are given any new trusted CA certs to add, add them. if "trusted" in ca_cert_cfg: |