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In the event that the configuration was corrupt the first time the
SSSD is started, it would write in the special data for attributes
and indexes, but it would fail before writing the version.
Subsequent reloads (even with correct configuration files) would
fail, since they would try again to write the attributes and
indexes and fail since they were already present.
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Make shadow-utils base path configurable
Use default values for params, allow configuring them
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This fixes a bug with legacy backends where the cached password would be cleared
on a user update.
Using a different attribute we make sure a userPassword coming from the remote
backend does not interfere with a cachedPassword (and vice versa).
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If the data provider is not yet available when NSS and PAM start,
they will generate a segmentation fault when trying to configure
their automatic reconnection to the Data Provider. I've now added
code in sss_dp_init() to detect whether the dp_ctx is NULL and
return EIO.
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ldap backend
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When a user from a domain served by the proxy backend changes his
password with passwd the passwd command asks for the old password,
but it is not validated by the pam_chauthtok call in the proxy
backend, because it is running as root.
If the request is coming the unpriviledged socket we now call
pam_authenticate explicitly before pam_chauthtok.
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The domain name is no longer send as an element on its own, but
if set as a member of the response array. If the user was not found
pd->domain is NULL and strlen will seg-fault.
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- added range check for supplied UIDs and GIDs
- initialize pc_gid to 0 to trigger gid generation
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see https://fedorahosted.org/sssd/ticket/25
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Force a user lookup against the users domain provider.
If a user domain is not specified search though all non fully qualifying
domains.
Perform authentication against the corrent domain auth backend, based on the
user's domain found in the lookup if one was not
specified.
Also move the NSS-DP functions in COMMON-DP as they are reused by the PAM
responder too now.
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Add code to check if the file has changed since the last update was performed.
Avoid dumping and reloading the config ldb if the modification time of the
configuration file has not changed at all.
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We need to stop parsing domains as soon as a caaandidate is found and let the
callback search additional domains if the id is not found.
Should fix ticket #21
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Also convert all places where we were using custom code to parse
config arguments.
And fix a copy&paste error in nss_get_config
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Previously, every DP client was allowed to set its own "retries"
option. This option was ambiguous, and useless. All DP clients
will now use a global option set in the services config called
"reconnection_retries"
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Also remove the [services/infopipe] section, since we're not
shipping InfoPipe yet, and that would be confusing.
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Also setting dctx->domain to NULL is a recipe for segfaults :-)
Assign dctx->domain only when dom actually holds a domain pointer.
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Implement credentials caching in pam responder.
Currently works only for the proxy backend.
Also cleanup pam responder code and mode common code in data provider.
(the data provider should never include responder private headers)
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Change sysdb to always passwd sss_domain_info, not just the domain name.
This way domain specific options can always be honored at the db level.
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The SSSD now links with the ini_config and collection libraries
in the common directory.
The monitor will track changes to the /etc/sssd/sssd.conf file
using inotify on platforms that support it, or polled every 5
seconds on platforms that do not.
At startup or modification of the conf file, the monitor will
purge the existing confdb and reread it completely from the conf
file, to ensure that there are no lingering entries. It does this
in a transaction, so there should be no race condition with the
client services.
A new option has been added to the startup options for the SSSD.
It is now possible to specify an alternate config file with the
-c <file> at the command line.
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Fixes requested during code review
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Previously it was runtime-selectable in the confdb, but this is
not a sensible approach, as if it were to change during runtime,
it would cause problems communicating with the child services.
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This way we do not waste resources starting searching for users/groups in
multiple backends when the first one has the answer.
Also prevents possible race conditions where a user named the same way is found
in multiple backends and the wrong one is returned.
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Since we switched to allowing domains to be configured but
inactive, we need to include the default set (just LOCAL) into
the first-start config.
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This was missed when we moved away from using the message_handler
for sending replies (in order to support async processing).
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To be able to correctly filter out duplicate names when multiple non-fully
qualified domains are in use we need to be able to specify the domains order.
This is now accomplished by the configuration paramets 'domains' in the
config/domains entry. 'domains' is a comma separated list of domain names.
This paramter allows also to have disbaled domains in the configuration without
requiring to completely delete them.
The domains list is now kept in a linked list of sss_domain_info objects.
The first domain is also the "default" domain.
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Use common sss_parse_name function in all responders
Simplify responder headers by combining common,cmd,dp in one header and
add name parse structure as part of the common responder context.
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This way LOCAL domains backed by files works as expected too.
Tested with nss_files + pam_unix
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The same module may implement both types, but initializatrion will be
nonetheless performed separately, once for the identity module and once for the
authenticator module.
Also change the proxy module to retireve the pam target name from the domain
configuration so that it is possibile to create per-domain pam stacks.
With this modification it is actually possibile to use normal nss and pam
modules to perform a successful authentication (tested only with sudo so far)
Update exmples.
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This became obsolete when we moved all functions to sysdb.
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The ldap_ prefix should be considered reserved namespace for ldap librraies
Renaming all ldap_* internal stuff to sdap_, in some cases also move from
ldap_be_ to sdap_ as the reason for _be_ was just clearly a name space
conflict (ldap_be_init, etc..)
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Makes LOCAL a normal backend removing some special handling.
Fix/Add id range filtering and name filtering
Filters uid=0 and gid=0 in the proxy backend as 0 is invalid within
sysdb and was causing getxxent calls to fail completely.
Fix nss_ncache_check_xxx calls to avoid dirtying the 'ret' variable and
causing some unwanted failures.
Change sysdb to always return the uid number when searching member entries so
that id range filtering can be perfomed also in group searhes (does not work
with legacy backends)
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A new nss_parse_name function uses pcre to parse names, this makes
it possible, in future, to make the filter user configurable.
Add a new filter mechanism to filter out users that uses the negative cache by
setting a permanet negative entry.
Rework the entry points where the negative cache is checked for.
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