g_malloc(), etc, never return NULL, by API contract. Likewise, by
extension, no other glib function ever returns NULL due to lack of
memory. So remove lots of unnecessary checks (the vast majority of
which would have immediately crashed had they ever run anyway, since
g_set_error(), g_warning(), and nm_log_*() all need to allocate
memory).
https://bugzilla.gnome.org/show_bug.cgi?id=693678
Neither gnutls nor NSS fully support PKCS#8 so we don't have complete
support here, but at least recognize the keys and make an attempt to
check the private key if we can.
Because we can't ever know if we're the last user of NSS or gnutls
when nm_utils_deinit() is called, just don't bother deiniting
the crypto providers. And atexit handlers are generally frowned
upon for the exact same reason. You never know what library linked
into your process might be also using NSS or gnutls, so basically
if these libraries suck enough to use global data and not reference
count it, just let the data leak. If we do clean stuff up that
can lead to crashes when other libraries might try to use NSS or
gnutls after the atexit handler or nm_utils_deinit() has been run.
See also: https://bugzilla.mozilla.org/show_bug.cgi?id=54189#c1
To be backwards compatible clients need to handle both paths to private
keys and the decrypted private key data, which is what used to get passed
in the private-key and phase2-private-key attributes of the 802.1x setting.
When moving a connection around between system-settings and user-settings,
if the private key is decrypted data, the settings service needs to store
that decrypted data somewhere so that the key can be sent to NM during
the connection process.
But we don't want to store the decrypted private key data, so we have to
re-encrypt it (possibly generating a private key password if one wasn't
sent with the decrypted data) and save it to disk, then send NM a path
to that private key during connection.
To help clients do this, and so that they don't have to carry around
multiple crypto implementations depending on whether they want to use
NSS or gnutls/gcrypt, add a helper to libnm-util.
Furthermore, I misunderstood a bunch of stuff with crypto padding when
writing the encrypt/decrypt functions long ago, so fix that up. Don't
return padding as part of the decrypted data, and make sure to verify
the padding's expected lengths and values when decrypting. Many thanks
to Nalin Dahyabhai for pointing me in the right direction.
Add support for PKCS#12 private keys (bgo #558982)
* libnm-util/crypto.c
libnm-util/crypto.h
- (parse_old_openssl_key_file): rename from parse_key_file(); adapt to
take a GByteArray instead of a filename
- (file_to_g_byte_array): handle private key files too
- (decrypt_key): take a GByteArray rather than data + len
- (crypto_get_private_key_data): refactor crypto_get_private_key() into
one function that takes a filename, and one that takes raw data;
detect pkcs#12 files as well
- (crypto_load_and_verify_certificate): detect file type
- (crypto_is_pkcs12_data, crypto_is_pkcs12_file): add pkcs#12 detection
functions
* libnm-util/crypto_gnutls.c
- (crypto_decrypt): take GByteArray rather than data + len; fix a bug
whereby tail padding was incorrectly handled, leading to erroneous
successes when trying to decrypt the data
- (crypto_verify_cert): rework somewhat
- (crypto_verify_pkcs12): validate pkcs#12 keys
* libnm-util/crypto_nss.c
- (crypto_init): enable various pkcs#12 ciphers
- (crypto_decrypt): take a GByteArray rather than data + len
- (crypto_verify_cert): clean up
- (crypto_verify_pkcs12): validate pkcs#12 keys
* libnm-util/test-crypto.c
- Handle pkcs#12 keys
* libnm-util/nm-setting-8021x.c
libnm-util/nm-setting-8021x.h
libnm-util/libnm-util.ver
- Add two new properties, 'private-key-password' and
'phase2-private-key-password', to be used in conjunction with
pkcs#12 keys
- (nm_setting_802_1x_set_ca_cert_from_file,
nm_setting_802_1x_set_client_cert_from_file,
nm_setting_802_1x_set_phase2_ca_cert_from_file,
nm_setting_802_1x_set_phase2_client_from_file): return certificate
type
- (nm_setting_802_1x_get_private_key_password,
nm_setting_802_1x_get_phase2_private_key_password): return private
key passwords
- (nm_setting_802_1x_set_private_key_from_file,
nm_setting_802_1x_set_phase2_private_key_from_file): set the private
key from a file, and update the private key password at the same time
- (nm_setting_802_1x_get_private_key_type,
nm_setting_802_1x_get_phase2_private_key_type): return the private
key type
* src/supplicant-manager/nm-supplicant-settings-verify.c
- Whitelist private key passwords
* src/supplicant-manager/nm-supplicant-config.c
- (nm_supplicant_config_add_setting_8021x): for pkcs#12 private keys,
add the private key password to the supplicant config, but do not
add the client certificate (as required by wpa_supplicant)
git-svn-id: http://svn-archive.gnome.org/svn/NetworkManager/trunk@4280 4912f4e0-d625-0410-9fb7-b9a5a253dbdc
Patch from Alexander Sack <asac@ubuntu.com>
* libnm-util/crypto_gnutls.c
libnm-util/crypto_nss.c
- (crypto_init, crypto_deinit): just use a boolean instead of a refcount
* libnm-util/nm-utils.c
libnm-util/nm-utils.h
libnm-util/libnm-util.ver
- (nm_utils_init): initialize libnm-util
- (nm_utils_deinit): de-initialize libnm-util and clean up resources
* libnm-util/nm-setting-8021x.c
- (nm_setting_802_1x_class_init): init libnm-util when needed
git-svn-id: http://svn-archive.gnome.org/svn/NetworkManager/trunk@4047 4912f4e0-d625-0410-9fb7-b9a5a253dbdc
Move crypto functions from nm-applet to libnm-util.
* libnm-util/nm-setting-8021x.c (nm_setting_802_1x_set_ca_cert)
(nm_setting_802_1x_set_client_cert)
(nm_setting_802_1x_set_phase2_ca_cert)
(nm_setting_802_1x_set_phase2_client_cert)
(nm_setting_802_1x_set_private_key)
(nm_setting_802_1x_set_phase2_private_key): Implement. Given a certificate
file (or private key and it's password), read the certificate data.
* libnm-util/crypto_nss.c:
* libnm-util/crypto_gnutls.c:
* libnm-util/crypto.[ch]: Move here from nm-applet.
* configure.in: Check for NSS and gnutls here (moved here from nm-applet).
* system-settings/plugins/ifcfg-suse/parser.c (read_wpa_eap_settings):
Imlement WPA-EAP configuration reading from sysconfig.
git-svn-id: http://svn-archive.gnome.org/svn/NetworkManager/trunk@3673 4912f4e0-d625-0410-9fb7-b9a5a253dbdc
