LDAP module group functions. More...

#include <freeradius-devel/util/debug.h>
#include "rlm_ldap.h"

Include dependency graph for groups.c:

Data Structures
struct	ldap_group_groupobj_ctx_t
	Context to use when looking up group membership using group objects. More...

struct	ldap_group_userobj_ctx_t
	Context to use when resolving group membership from the user object. More...

struct	ldap_group_userobj_dyn_ctx_t
	Context to use when evaluating group membership from the user object in an xlat. More...

Macros
#define	LOG_PREFIX "rlm_ldap groups"

Functions
static unlang_action_t	ldap_cacheable_groupobj_resume (rlm_rcode_t p_result, UNUSED int priority, request_t request, void uctx)
	Process the results of a group object lookup.

static unlang_action_t	ldap_cacheable_groupobj_start (rlm_rcode_t p_result, UNUSED int priority, request_t request, void uctx)
	Initiate an LDAP search for group membership looking at the group objects.

static unlang_action_t	ldap_cacheable_userobj_resolve (rlm_rcode_t p_result, UNUSED int priority, request_t request, void uctx)
	Initiate DN to name and name to DN group lookups.

static unlang_action_t	ldap_cacheable_userobj_store (rlm_rcode_t p_result, request_t request, ldap_group_userobj_ctx_t *group_ctx)
	Move user object group attributes to the control list.

static unlang_action_t	ldap_check_groupobj_resume (rlm_rcode_t p_result, UNUSED int priority, request_t request, void uctx)
	Process the results of a group object lookup.

static unlang_action_t	ldap_check_userobj_resume (rlm_rcode_t p_result, UNUSED int priority, request_t request, void uctx)
	Process the results of evaluating a user object when checking group membership.

static unlang_action_t	ldap_check_userobj_start (UNUSED rlm_rcode_t p_result, UNUSED int priority, request_t request, void uctx)
	Initiate a user lookup to check membership.

static void	ldap_dn2name_cancel (UNUSED request_t request, UNUSED fr_signal_t action, void uctx)
	Cancel an in-progress DN to name lookup.

static unlang_action_t	ldap_dn2name_start (rlm_rcode_t p_result, UNUSED int priority, request_t request, void uctx)
	Initiate resolving a group DN to its name.

static unlang_action_t	ldap_group_dn2name_resume (rlm_rcode_t p_result, UNUSED int priority, request_t request, void uctx)
	Process the results of a group DN -> name lookup.

static unlang_action_t	ldap_group_dn2name_start (rlm_rcode_t p_result, UNUSED int priority, request_t request, void uctx)
	Initiate an LDAP search to turn a group DN into it's name.

static void	ldap_group_groupobj_cancel (UNUSED request_t request, UNUSED fr_signal_t action, void uctx)
	Cancel a pending group object lookup.

static unlang_action_t	ldap_group_name2dn_resume (rlm_rcode_t p_result, UNUSED int priority, request_t request, void uctx)
	Process the results of looking up group DNs from names.

static unlang_action_t	ldap_group_name2dn_start (rlm_rcode_t p_result, UNUSED int priority, request_t request, void uctx)
	Convert multiple group names into a DNs.

static void	ldap_group_userobj_cancel (UNUSED request_t request, UNUSED fr_signal_t action, void uctx)
	Cancel a pending group lookup query.

unlang_action_t	rlm_ldap_cacheable_groupobj (rlm_rcode_t p_result, request_t request, ldap_autz_ctx_t *autz_ctx)
	Convert group membership information into attributes.

unlang_action_t	rlm_ldap_cacheable_userobj (rlm_rcode_t p_result, request_t request, ldap_autz_ctx_t autz_ctx, char const attr)
	Convert group membership information into attributes.

unlang_action_t	rlm_ldap_check_cached (rlm_rcode_t p_result, rlm_ldap_t const inst, request_t request, fr_value_box_t const check)
	Check group membership attributes to see if a user is a member.

unlang_action_t	rlm_ldap_check_groupobj_dynamic (rlm_rcode_t p_result, request_t request, ldap_group_xlat_ctx_t *xlat_ctx)
	Initiate an LDAP search to determine group membership, querying group objects.

unlang_action_t	rlm_ldap_check_userobj_dynamic (rlm_rcode_t p_result, request_t request, ldap_group_xlat_ctx_t *xlat_ctx)
	Query the LDAP directory to check if a user object is a member of a group.

static int	userobj_dyn_free (ldap_group_userobj_dyn_ctx_t *group_ctx)
	Ensure retrieved LDAP values are cleared up.

Variables
static char const *	null_attrs [] = { NULL }

Detailed Description

LDAP module group functions.

Id: 05a012c776d331f34cc859bffe11405b0992c861

Author: Arran Cudbard-Bell (a.cud.nosp@m.bard.nosp@m.b@fre.nosp@m.erad.nosp@m.ius.o.nosp@m.rg)

Copyright: 2013 Network RADIUS SAS (legal.nosp@m.@net.nosp@m.workr.nosp@m.adiu.nosp@m.s.com); 2013-2015 The FreeRADIUS Server Project.

Id: 283b6cafdbf6e61203215505e1844866d3d9286b

Author: Arran Cudbard-Bell (a.cud.nosp@m.bard.nosp@m.b@fre.nosp@m.erad.nosp@m.ius.o.nosp@m.rg)

Copyright: 2013 Network RADIUS SAS (legal.nosp@m.@net.nosp@m.workr.nosp@m.adiu.nosp@m.s.com); 2013-2015 The FreeRADIUS Server Project.

Definition in file groups.c.

Data Structure Documentation

◆ ldap_group_groupobj_ctx_t

struct ldap_group_groupobj_ctx_t

Context to use when looking up group membership using group objects.

Definition at line 59 of file groups.c.

Collaboration diagram for ldap_group_groupobj_ctx_t:

Data Fields
char const *	attrs[2]	For retrieving the group name.
fr_value_box_t *	base_dn	The base DN to search for groups in.
fr_value_box_list_t	expanded_filter	Values produced by expanding filter xlat.
tmpl_t *	filter_tmpl	Tmpl to expand into LDAP filter.
rlm_ldap_t const *	inst	Module instance.
fr_ldap_query_t *	query	Current query performing group lookup.
fr_ldap_thread_trunk_t *	ttrunk	Trunk on which to perform additional queries.
void *	uctx	Optional context for use in results parsing.

◆ ldap_group_userobj_ctx_t

struct ldap_group_userobj_ctx_t

Context to use when resolving group membership from the user object.

Definition at line 42 of file groups.c.

Collaboration diagram for ldap_group_userobj_ctx_t:

Data Fields
char const *	attrs[2]	For resolving name from DN.
fr_value_box_t *	base_dn	The base DN to search for groups in.
char **	dn	Current DN being resolved.
char *	group_dn[LDAP_MAX_CACHEABLE+1]	List of group DNs which need resolving.
char *	group_name[LDAP_MAX_CACHEABLE+1]	List of group names which need resolving.
fr_pair_list_t	groups	Temporary list to hold pairs.
rlm_ldap_t const *	inst	Module instance.
TALLOC_CTX *	list_ctx	In which to allocate pairs.
unsigned int	name_cnt	How many names need resolving.
fr_ldap_query_t *	query	Current query performing group resolution.
fr_ldap_thread_trunk_t *	ttrunk	Trunk on which to perform additional queries.

◆ ldap_group_userobj_dyn_ctx_t

struct ldap_group_userobj_dyn_ctx_t

Context to use when evaluating group membership from the user object in an xlat.

Definition at line 73 of file groups.c.

Collaboration diagram for ldap_group_userobj_dyn_ctx_t:

Data Fields
char const *	attrs[2]	For retrieving the group name.
int	count	How many entries there are in values.
char *	group_name	Result of resolving the provided group DN as to a name.
char const *	lookup_dn	The DN currently being looked up, when resolving DN to name.
fr_ldap_query_t *	query	Current query doing a DN to name resolution.
bool	resolving_value	Is the current query resolving a DN from values.
int	value_no	The current entry in values being processed.
struct berval **	values	Values of the membership attribute to check.
ldap_group_xlat_ctx_t *	xlat_ctx	Xlat context being evaluated.

Macro Definition Documentation

◆ LOG_PREFIX

#define LOG_PREFIX "rlm_ldap groups"

Definition at line 33 of file groups.c.

Function Documentation

◆ ldap_cacheable_groupobj_resume()

static unlang_action_t ldap_cacheable_groupobj_resume	(	rlm_rcode_t *	p_result,
		UNUSED int *	priority,
		request_t *	request,
		void *	uctx
	)

static

Process the results of a group object lookup.

Parameters

[out]	p_result	Result of processing group lookup.
[out]	priority	Unused.
[in]	request	Current request.
[in]	uctx	Group lookup context.

Returns: One of the RLM_MODULE_* values.

Definition at line 614 of file groups.c.

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◆ ldap_cacheable_groupobj_start()

static unlang_action_t ldap_cacheable_groupobj_start	(	rlm_rcode_t *	p_result,
		UNUSED int *	priority,
		request_t *	request,
		void *	uctx
	)

static

Initiate an LDAP search for group membership looking at the group objects.

Parameters

[out]	p_result	Result of submitting LDAP search
[out]	priority	Unused.
[in]	request	Current request.
[in]	uctx	Group lookup context.

Returns: One of the RLM_MODULE_* values.

Definition at line 574 of file groups.c.

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◆ ldap_cacheable_userobj_resolve()

static unlang_action_t ldap_cacheable_userobj_resolve	(	rlm_rcode_t *	p_result,
		UNUSED int *	priority,
		request_t *	request,
		void *	uctx
	)

static

Initiate DN to name and name to DN group lookups.

Called repeatedly until there are no more lookups to perform or an unresolved lookup causes the module to fail.

Parameters

p_result	The result of the previous expansion.
priority	unused.
request	Current request.
uctx	The group context being processed.

Returns: One of the RLM_MODULE_* values.

Definition at line 383 of file groups.c.

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◆ ldap_cacheable_userobj_store()

static unlang_action_t ldap_cacheable_userobj_store	(	rlm_rcode_t *	p_result,
		request_t *	request,
		ldap_group_userobj_ctx_t *	group_ctx
	)

static

Move user object group attributes to the control list.

Parameters

p_result	The result of adding user object group attributes
request	Current request.
group_ctx	Context used to evaluate group attributes

Returns: RLM_MODULE_OK

Definition at line 346 of file groups.c.

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◆ ldap_check_groupobj_resume()

static unlang_action_t ldap_check_groupobj_resume	(	rlm_rcode_t *	p_result,
		UNUSED int *	priority,
		request_t *	request,
		void *	uctx
	)

static

Process the results of a group object lookup.

Parameters

[out]	p_result	Result of processing group lookup.
[out]	priority	Unused.
[in]	request	Current request.
[in]	uctx	Group lookup context.

Returns: One of the RLM_MODULE_* values.

Definition at line 741 of file groups.c.

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◆ ldap_check_userobj_resume()

static unlang_action_t ldap_check_userobj_resume	(	rlm_rcode_t *	p_result,
		UNUSED int *	priority,
		request_t *	request,
		void *	uctx
	)

static

Process the results of evaluating a user object when checking group membership.

Definition at line 909 of file groups.c.

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◆ ldap_check_userobj_start()

static unlang_action_t ldap_check_userobj_start	(	UNUSED rlm_rcode_t *	p_result,
		UNUSED int *	priority,
		request_t *	request,
		void *	uctx
	)

static

Initiate a user lookup to check membership.

Used when the user's DN is already known but cached group membership has not been stored

Definition at line 896 of file groups.c.

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◆ ldap_dn2name_cancel()

static void ldap_dn2name_cancel	(	UNUSED request_t *	request,
		UNUSED fr_signal_t	action,
		void *	uctx
	)

static

Cancel an in-progress DN to name lookup.

Definition at line 882 of file groups.c.

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◆ ldap_dn2name_start()

static unlang_action_t ldap_dn2name_start	(	rlm_rcode_t *	p_result,
		UNUSED int *	priority,
		request_t *	request,
		void *	uctx
	)

static

Initiate resolving a group DN to its name.

Definition at line 861 of file groups.c.

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◆ ldap_group_dn2name_resume()

static unlang_action_t ldap_group_dn2name_resume	(	rlm_rcode_t *	p_result,
		UNUSED int *	priority,
		request_t *	request,
		void *	uctx
	)

static

Process the results of a group DN -> name lookup.

The retrieved value is added as a value pair to the temporary list in the group resolution context.

Parameters

[out]	p_result	The result of trying to resolve a dn to a group name.
[in]	priority	unused.
[in]	request	Current request.
[in]	uctx	The group resolution context.

Returns: One of the RLM_MODULE_* values.

Definition at line 279 of file groups.c.

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◆ ldap_group_dn2name_start()

static unlang_action_t ldap_group_dn2name_start	(	rlm_rcode_t *	p_result,
		UNUSED int *	priority,
		request_t *	request,
		void *	uctx
	)

static

Initiate an LDAP search to turn a group DN into it's name.

Unlike the inverse conversion of a name to a DN, most LDAP directories don't allow filtering by DN, so we need to search for each DN individually.

Parameters

[out]	p_result	The result of trying to resolve a dn to a group name.
[in]	priority	unused.
[in]	request	Current request.
[in]	uctx	The group resolution context.

Returns: One of the RLM_MODULE_* values.

Definition at line 251 of file groups.c.

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◆ ldap_group_groupobj_cancel()

static void ldap_group_groupobj_cancel	(	UNUSED request_t *	request,
		UNUSED fr_signal_t	action,
		void *	uctx
	)

static

Cancel a pending group object lookup.

Definition at line 594 of file groups.c.

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◆ ldap_group_name2dn_resume()

static unlang_action_t ldap_group_name2dn_resume	(	rlm_rcode_t *	p_result,
		UNUSED int *	priority,
		request_t *	request,
		void *	uctx
	)

static

Process the results of looking up group DNs from names.

Parameters

[out]	p_result	The result of trying to resolve a group name to a dn.
[out]	priority	Unused
[in]	request	Current request.
[in]	uctx	Group lookup context.

Returns: One of the RLM_MODULE_* values.

Definition at line 162 of file groups.c.

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◆ ldap_group_name2dn_start()

static unlang_action_t ldap_group_name2dn_start	(	rlm_rcode_t *	p_result,
		UNUSED int *	priority,
		request_t *	request,
		void *	uctx
	)

static

Convert multiple group names into a DNs.

Given an array of group names, builds a filter matching all names, then retrieves all group objects and stores the DN associated with each group object.

Parameters

[out]	p_result	The result of trying to resolve a group name to a dn.
[out]	priority	Unused
[in]	request	Current request.
[in]	uctx	Group lookup context.

Returns: One of the RLM_MODULE_* values.

Definition at line 111 of file groups.c.

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◆ ldap_group_userobj_cancel()

static void ldap_group_userobj_cancel	(	UNUSED request_t *	request,
		UNUSED fr_signal_t	action,
		void *	uctx
	)

static

Cancel a pending group lookup query.

Definition at line 88 of file groups.c.

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◆ rlm_ldap_cacheable_groupobj()

unlang_action_t rlm_ldap_cacheable_groupobj	(	rlm_rcode_t *	p_result,
		request_t *	request,
		ldap_autz_ctx_t *	autz_ctx
	)

Convert group membership information into attributes.

Parameters

[out]	p_result	The result of trying to resolve a dn to a group name.
[in]	request	Current request.
[in]	autz_ctx	Authentication context being processed.

Returns: One of the RLM_MODULE_* values.

Definition at line 700 of file groups.c.

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◆ rlm_ldap_cacheable_userobj()

unlang_action_t rlm_ldap_cacheable_userobj	(	rlm_rcode_t *	p_result,
		request_t *	request,
		ldap_autz_ctx_t *	autz_ctx,
		char const *	attr
	)

Convert group membership information into attributes.

This may just be able to parse attribute values in the user object or it may need to yield to other LDAP searches depending on what was returned and what is set to be cached.

Parameters

[out]	p_result	The result of trying to resolve a dn to a group name.
[in]	request	Current request.
[in]	autz_ctx	LDAP authorization context being processed.
[in]	attr	membership attribute to look for in the entry.

Returns: One of the RLM_MODULE_* values.

Definition at line 443 of file groups.c.

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◆ rlm_ldap_check_cached()

unlang_action_t rlm_ldap_check_cached	(	rlm_rcode_t *	p_result,
		rlm_ldap_t const *	inst,
		request_t *	request,
		fr_value_box_t const *	check
	)

Check group membership attributes to see if a user is a member.

Parameters

[out]	p_result	Result of calling the module.
[in]	inst	rlm_ldap configuration.
[in]	request	Current request.
[in]	check	vb containing the group value (name or dn).

Definition at line 1158 of file groups.c.

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◆ rlm_ldap_check_groupobj_dynamic()

unlang_action_t rlm_ldap_check_groupobj_dynamic	(	rlm_rcode_t *	p_result,
		request_t *	request,
		ldap_group_xlat_ctx_t *	xlat_ctx
	)

Initiate an LDAP search to determine group membership, querying group objects.

Used by LDAP group membership xlat

Parameters

p_result	Current module result code.
request	Current request.
xlat_ctx	xlat context being processed.

Definition at line 786 of file groups.c.

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◆ rlm_ldap_check_userobj_dynamic()

unlang_action_t rlm_ldap_check_userobj_dynamic	(	rlm_rcode_t *	p_result,
		request_t *	request,
		ldap_group_xlat_ctx_t *	xlat_ctx
	)

Query the LDAP directory to check if a user object is a member of a group.

Parameters

[out]	p_result	Result of calling the module.
[in]	request	Current request.
[in]	xlat_ctx	Context of the xlat being evaluated.

Definition at line 1120 of file groups.c.

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◆ userobj_dyn_free()

static int userobj_dyn_free ( ldap_group_userobj_dyn_ctx_t * group_ctx )

static

Ensure retrieved LDAP values are cleared up.

Definition at line 1108 of file groups.c.

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Variable Documentation

◆ null_attrs

char const* null_attrs[] = { NULL }

static

Definition at line 37 of file groups.c.

Data Structures

Macros

Functions

Variables

Detailed Description

Data Structure Documentation

◆ ldap_group_groupobj_ctx_t

◆ ldap_group_userobj_ctx_t

◆ ldap_group_userobj_dyn_ctx_t

Macro Definition Documentation

◆ LOG_PREFIX

Function Documentation

◆ ldap_cacheable_groupobj_resume()

◆ ldap_cacheable_groupobj_start()

◆ ldap_cacheable_userobj_resolve()

◆ ldap_cacheable_userobj_store()

◆ ldap_check_groupobj_resume()

◆ ldap_check_userobj_resume()

◆ ldap_check_userobj_start()

◆ ldap_dn2name_cancel()

◆ ldap_dn2name_start()

◆ ldap_group_dn2name_resume()

◆ ldap_group_dn2name_start()

◆ ldap_group_groupobj_cancel()

◆ ldap_group_name2dn_resume()

◆ ldap_group_name2dn_start()

◆ ldap_group_userobj_cancel()

◆ rlm_ldap_cacheable_groupobj()

◆ rlm_ldap_cacheable_userobj()

◆ rlm_ldap_check_cached()

◆ rlm_ldap_check_groupobj_dynamic()

◆ rlm_ldap_check_userobj_dynamic()

◆ userobj_dyn_free()

Variable Documentation

◆ null_attrs