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gssapi: credential store extensions (#451)

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Implement the GSS-API credential store API extensions defined by MIT here:

https://k5wiki.kerberos.org/wiki/Projects/Credential_Store_extensions

Note: we kill off gss_acquire_cred_ext() here. This was never a public API,
although mechanisms could have implemented it and I briefly used it in my
BrowserID prototype mechanism. gss_acquire_cred_ext_from() occupies the place
in the dispatch table where gss_acquire_cred_ext() used to, but this structure
was never visible outside Heimdal (i.e. it is only used by internal
mechanisms);

(Mechanisms that need to accept arbitrary key/value dictionaries from
applications should now implement gss_acquire_cred_from().)
This commit is contained in:
Luke Howard
2019-01-03 09:26:41 +11:00
committed by Nico Williams
parent a7d42cdf6b
commit e0bb9c10ca
39 changed files with 1289 additions and 1054 deletions
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64
lib/gssapi/mech/gss_store_cred.c
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@@ -43,58 +43,14 @@ gss_store_cred(OM_uint32 *minor_status,
gss_OID_set *elements_stored,
gss_cred_usage_t *cred_usage_stored)
{
struct _gss_cred *cred = (struct _gss_cred *) input_cred_handle;
struct _gss_mechanism_cred *mc;
OM_uint32 maj = GSS_S_FAILURE;
OM_uint32 junk;
size_t successes = 0;
if (minor_status == NULL)
return GSS_S_FAILURE;
if (elements_stored)
*elements_stored = NULL;
if (cred_usage_stored)
*cred_usage_stored = 0;
if (cred == NULL)
return GSS_S_NO_CONTEXT;
if (elements_stored) {
maj = gss_create_empty_oid_set(minor_status, elements_stored);
if (maj != GSS_S_COMPLETE)
return maj;
}
HEIM_SLIST_FOREACH(mc, &cred->gc_mc, gmc_link) {
gssapi_mech_interface m = mc->gmc_mech;
if (m == NULL || m->gm_store_cred == NULL)
continue;
if (desired_mech != GSS_C_NO_OID &&
!gss_oid_equal(&m->gm_mech_oid, desired_mech))
continue;
maj = (m->gm_store_cred)(minor_status, mc->gmc_cred,
cred_usage, desired_mech, overwrite_cred,
default_cred, NULL, cred_usage_stored);
if (maj == GSS_S_COMPLETE) {
if (elements_stored)
gss_add_oid_set_member(&junk, desired_mech, elements_stored);
successes++;
} else if (desired_mech != GSS_C_NO_OID) {
gss_release_oid_set(&junk, elements_stored);
return maj;
}
}
if (successes == 0) {
if (maj != GSS_S_COMPLETE)
return maj; /* last failure */
return GSS_S_FAILURE;
}
*minor_status = 0;
return GSS_S_COMPLETE;
return gss_store_cred_into(minor_status,
input_cred_handle,
cred_usage,
desired_mech,
overwrite_cred,
default_cred,
GSS_C_NO_CRED_STORE,
elements_stored,
cred_usage_stored);
}