gssapi (3) - Linux Manuals

NAME

Heimdal GSS-API functions -

Functions


GSSAPI_LIB_FUNCTION OM_uint32
GSSAPI_LIB_CALL gss_add_oid_set_member (OM_uint32 *minor_status, const gss_OID member_oid, gss_OID_set *oid_set)"

GSSAPI_LIB_FUNCTION OM_uint32
GSSAPI_LIB_CALL gss_wrap_iov (OM_uint32 *minor_status, gss_ctx_id_t context_handle, int conf_req_flag, gss_qop_t qop_req, int *conf_state, gss_iov_buffer_desc *iov, int iov_count)"

GSSAPI_LIB_FUNCTION OM_uint32
GSSAPI_LIB_CALL gss_unwrap_iov (OM_uint32 *minor_status, gss_ctx_id_t context_handle, int *conf_state, gss_qop_t *qop_state, gss_iov_buffer_desc *iov, int iov_count)"

GSSAPI_LIB_FUNCTION OM_uint32
GSSAPI_LIB_CALL gss_wrap_iov_length (OM_uint32 *minor_status, gss_ctx_id_t context_handle, int conf_req_flag, gss_qop_t qop_req, int *conf_state, gss_iov_buffer_desc *iov, int iov_count)"

GSSAPI_LIB_FUNCTION OM_uint32
GSSAPI_LIB_CALL gss_release_iov_buffer (OM_uint32 *minor_status, gss_iov_buffer_desc *iov, int iov_count)"

GSSAPI_LIB_FUNCTION OM_uint32
GSSAPI_LIB_CALL gss_canonicalize_name (OM_uint32 *minor_status, gss_const_name_t input_name, const gss_OID mech_type, gss_name_t *output_name)"

GSSAPI_LIB_FUNCTION OM_uint32
GSSAPI_LIB_CALL gss_display_status (OM_uint32 *minor_status, OM_uint32 status_value, int status_type, const gss_OID mech_type, OM_uint32 *message_context, gss_buffer_t status_string)"

GSSAPI_LIB_FUNCTION OM_uint32
GSSAPI_LIB_CALL gss_export_name (OM_uint32 *minor_status, gss_const_name_t input_name, gss_buffer_t exported_name)"

GSSAPI_LIB_FUNCTION OM_uint32
GSSAPI_LIB_CALL gss_import_name (OM_uint32 *minor_status, const gss_buffer_t input_name_buffer, const gss_OID input_name_type, gss_name_t *output_name)"

GSSAPI_LIB_FUNCTION OM_uint32
GSSAPI_LIB_CALL gss_init_sec_context (OM_uint32 *minor_status, gss_const_cred_id_t initiator_cred_handle, gss_ctx_id_t *context_handle, gss_const_name_t target_name, const gss_OID input_mech_type, OM_uint32 req_flags, OM_uint32 time_req, const gss_channel_bindings_t input_chan_bindings, const gss_buffer_t input_token, gss_OID *actual_mech_type, gss_buffer_t output_token, OM_uint32 *ret_flags, OM_uint32 *time_rec)"

GSSAPI_LIB_FUNCTION OM_uint32
GSSAPI_LIB_CALL gss_inquire_saslname_for_mech (OM_uint32 *minor_status, const gss_OID desired_mech, gss_buffer_t sasl_mech_name, gss_buffer_t mech_name, gss_buffer_t mech_description)"

GSSAPI_LIB_FUNCTION OM_uint32
GSSAPI_LIB_CALL gss_inquire_attrs_for_mech (OM_uint32 *minor_status, gss_const_OID mech, gss_OID_set *mech_attr, gss_OID_set *known_mech_attrs)"

GSSAPI_LIB_FUNCTION int
GSSAPI_LIB_CALL gss_oid_equal (gss_const_OID a, gss_const_OID b)"

GSSAPI_LIB_FUNCTION OM_uint32
GSSAPI_LIB_CALL gss_release_cred (OM_uint32 *minor_status, gss_cred_id_t *cred_handle)"

GSSAPI_LIB_FUNCTION OM_uint32
GSSAPI_LIB_CALL gss_release_name (OM_uint32 *minor_status, gss_name_t *input_name)"

GSSAPI_LIB_FUNCTION OM_uint32
GSSAPI_LIB_CALL gss_wrap (OM_uint32 *minor_status, gss_const_ctx_id_t context_handle, int conf_req_flag, gss_qop_t qop_req, const gss_buffer_t input_message_buffer, int *conf_state, gss_buffer_t output_message_buffer)"

Variables


gss_OID_desc GSSAPI_LIB_FUNCTION __gss_c_attr_stream_sizes_oid_desc

Detailed Description

Function Documentation

GSSAPI_LIB_FUNCTION OM_uint32 GSSAPI_LIB_CALL gss_add_oid_set_member (OM_uint32 *minor_status, const gss_OIDmember_oid, gss_OID_set *oid_set)

Add a oid to the oid set, function does not make a copy of the oid, so the pointer to member_oid needs to be stable for the whole time oid_set is used.

If there is a duplicate member of the oid, the new member is not added to to the set.

Parameters:

minor_status minor status code.
member_oid member to add to the oid set
oid_set oid set to add the member too

Returns:

a gss_error code, see gss_display_status() about printing the error code.

GSSAPI_LIB_FUNCTION OM_uint32 GSSAPI_LIB_CALL gss_canonicalize_name (OM_uint32 *minor_status, gss_const_name_tinput_name, const gss_OIDmech_type, gss_name_t *output_name)

gss_canonicalize_name takes a Internal Name (IN) and converts in into a mechanism specific Mechanism Name (MN).

The input name may multiple name, or generic name types.

If the input_name if of the GSS_C_NT_USER_NAME, and the Kerberos mechanism is specified, the resulting MN type is a GSS_KRB5_NT_PRINCIPAL_NAME.

For more information about Internal names and mechanism names.

Parameters:

minor_status minor status code.
input_name name to covert, unchanged by gss_canonicalize_name().
mech_type the type to convert Name too.
output_name the resulting type, release with gss_release_name(), independent of input_name.

Returns:

a gss_error code, see gss_display_status() about printing the error code.

GSSAPI_LIB_FUNCTION OM_uint32 GSSAPI_LIB_CALL gss_display_status (OM_uint32 *minor_status, OM_uint32status_value, intstatus_type, const gss_OIDmech_type, OM_uint32 *message_context, gss_buffer_tstatus_string)

Convert a GSS-API status code to text

Parameters:

minor_status minor status code
status_value status value to convert
status_type One of: GSS_C_GSS_CODE - status_value is a GSS status code, GSS_C_MECH_CODE - status_value is a mechanism status code
mech_type underlying mechanism. Use GSS_C_NO_OID to obtain the system default.
message_context state information to extract further messages from the status_value
status_string the allocated text representation. Release with gss_release_buffer()

Returns:

a gss_error code.

GSSAPI_LIB_FUNCTION OM_uint32 GSSAPI_LIB_CALL gss_export_name (OM_uint32 *minor_status, gss_const_name_tinput_name, gss_buffer_texported_name)

Convert a GGS-API name from internal form to contiguous string.

See Also:

gss_import_name(), Internal names and mechanism names.

Parameters:

minor_status minor status code
input_name input name in internal name form
exported_name output name in contiguos string form

Returns:

a gss_error code, see gss_display_status() about printing the error code.

GSSAPI_LIB_FUNCTION OM_uint32 GSSAPI_LIB_CALL gss_import_name (OM_uint32 *minor_status, const gss_buffer_tinput_name_buffer, const gss_OIDinput_name_type, gss_name_t *output_name)

Convert a GGS-API name from contiguous string to internal form.

Type of name and their format:

•
GSS_C_NO_OID
•
GSS_C_NT_USER_NAME
•
GSS_C_NT_HOSTBASED_SERVICE
•
GSS_C_NT_EXPORT_NAME
•
GSS_C_NT_ANONYMOUS
•
GSS_KRB5_NT_PRINCIPAL_NAME

See Also:

gss_export_name(), Internal names and mechanism names.

Parameters:

minor_status minor status code
input_name_buffer import name buffer
input_name_type type of the import name buffer
output_name the resulting type, release with gss_release_name(), independent of input_name

Returns:

a gss_error code, see gss_display_status() about printing the error code.

GSSAPI_LIB_FUNCTION OM_uint32 GSSAPI_LIB_CALL gss_init_sec_context (OM_uint32 *minor_status, gss_const_cred_id_tinitiator_cred_handle, gss_ctx_id_t *context_handle, gss_const_name_ttarget_name, const gss_OIDinput_mech_type, OM_uint32req_flags, OM_uint32time_req, const gss_channel_bindings_tinput_chan_bindings, const gss_buffer_tinput_token, gss_OID *actual_mech_type, gss_buffer_toutput_token, OM_uint32 *ret_flags, OM_uint32 *time_rec)

As the initiator build a context with an acceptor.

Returns in the major

•
GSS_S_COMPLETE - if the context if build
•
GSS_S_CONTINUE_NEEDED - if the caller needs to continue another round of gss_i nit_sec_context
•
error code - any other error code

Parameters:

minor_status minor status code.
initiator_cred_handle the credential to use when building the context, if GSS_C_NO_CREDENTIAL is passed, the default credential for the mechanism will be used.
context_handle a pointer to a context handle, will be returned as long as there is not an error.
target_name the target name of acceptor, created using gss_import_name(). The name is can be of any name types the mechanism supports, check supported name types with gss_inquire_names_for_mech().
input_mech_type mechanism type to use, if GSS_C_NO_OID is used, Kerberos (GSS_KRB5_MECHANISM) will be tried. Other available mechanism are listed in the GSS-API mechanisms section.
req_flags flags using when building the context, see Context creation flags
time_req time requested this context should be valid in seconds, common used value is GSS_C_INDEFINITE
input_chan_bindings Channel bindings used, if not exepected otherwise, used GSS_C_NO_CHANNEL_BINDINGS
input_token input token sent from the acceptor, for the initial packet the buffer of { NULL, 0 } should be used.
actual_mech_type the actual mech used, MUST NOT be freed since it pointing to static memory.
output_token if there is an output token, regardless of complete, continue_needed, or error it should be sent to the acceptor
ret_flags return what flags was negotitated, caller should check if they are accetable. For example, if GSS_C_MUTUAL_FLAG was negotiated with the acceptor or not.
time_rec amount of time this context is valid for

Returns:

a gss_error code, see gss_display_status() about printing the error code.

GSSAPI_LIB_FUNCTION OM_uint32 GSSAPI_LIB_CALL gss_inquire_attrs_for_mech (OM_uint32 *minor_status, gss_const_OIDmech, gss_OID_set *mech_attr, gss_OID_set *known_mech_attrs)

List support attributes for a mech and/or all mechanisms.

Parameters:

minor_status minor status code
mech given together with mech_attr will return the list of attributes for mechanism, can optionally be GSS_C_NO_OID.
mech_attr see mech parameter, can optionally be NULL, release with gss_release_oid_set().
known_mech_attrs all attributes for mechanisms supported, release with gss_release_oid_set().

GSSAPI_LIB_FUNCTION OM_uint32 GSSAPI_LIB_CALL gss_inquire_saslname_for_mech (OM_uint32 *minor_status, const gss_OIDdesired_mech, gss_buffer_tsasl_mech_name, gss_buffer_tmech_name, gss_buffer_tmech_description)

Returns different protocol names and description of the mechanism.

Parameters:

minor_status minor status code
desired_mech mech list query
sasl_mech_name SASL GS2 protocol name
mech_name gssapi protocol name
mech_description description of gssapi mech

Returns:

returns GSS_S_COMPLETE or a error code.

GSSAPI_LIB_FUNCTION int GSSAPI_LIB_CALL gss_oid_equal (gss_const_OIDa, gss_const_OIDb)

Compare two GSS-API OIDs with each other.

GSS_C_NO_OID matches nothing, not even it-self.

Parameters:

a first oid to compare
b second oid to compare

Returns:

non-zero when both oid are the same OID, zero when they are not the same.

GSSAPI_LIB_FUNCTION OM_uint32 GSSAPI_LIB_CALL gss_release_cred (OM_uint32 *minor_status, gss_cred_id_t *cred_handle)

Release a credentials

Its ok to release the GSS_C_NO_CREDENTIAL/NULL credential, it will return a GSS_S_COMPLETE error code. On return cred_handle is set ot GSS_C_NO_CREDENTIAL.

Example: 

* gss_cred_id_t cred = GSS_C_NO_CREDENTIAL;
* major = gss_release_cred(&minor, &cred);
*

Parameters:

minor_status minor status return code, mech specific
cred_handle a pointer to the credential too release

Returns:

an gssapi error code

GSSAPI_LIB_FUNCTION OM_uint32 GSSAPI_LIB_CALL gss_release_iov_buffer (OM_uint32 *minor_status, gss_iov_buffer_desc *iov, intiov_count)

Free all buffer allocated by gss_wrap_iov() or gss_unwrap_iov() by looking at the GSS_IOV_BUFFER_FLAG_ALLOCATED flag.

GSSAPI_LIB_FUNCTION OM_uint32 GSSAPI_LIB_CALL gss_release_name (OM_uint32 *minor_status, gss_name_t *input_name)

Free a name

import_name can point to NULL or be NULL, or a pointer to a gss_name_t structure. If it was a pointer to gss_name_t, the pointer will be set to NULL on success and failure.

Parameters:

minor_status minor status code
input_name name to free

Returns:

a gss_error code, see gss_display_status() about printing the error code.

GSSAPI_LIB_FUNCTION OM_uint32 GSSAPI_LIB_CALL gss_unwrap_iov (OM_uint32 *minor_status, gss_ctx_id_tcontext_handle, int *conf_state, gss_qop_t *qop_state, gss_iov_buffer_desc *iov, intiov_count)

Decrypt or verifies the signature on the data.

GSSAPI_LIB_FUNCTION OM_uint32 GSSAPI_LIB_CALL gss_wrap (OM_uint32 *minor_status, gss_const_ctx_id_tcontext_handle, intconf_req_flag, gss_qop_tqop_req, const gss_buffer_tinput_message_buffer, int *conf_state, gss_buffer_toutput_message_buffer)

Wrap a message using either confidentiality (encryption + signature) or sealing (signature).

Parameters:

minor_status minor status code.
context_handle context handle.
conf_req_flag if non zero, confidentiality is requestd.
qop_req type of protection needed, in most cases it GSS_C_QOP_DEFAULT should be passed in.
input_message_buffer messages to wrap
conf_state returns non zero if confidentiality was honoured.
output_message_buffer the resulting buffer, release with gss_release_buffer().

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