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break out the processing of the delegated credential to a separate

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function to make error handling easier, move the credential handling
to after other setup is done


git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@14764 ec53bebd-3082-4978-b11e-865c3cabbd6b
This commit is contained in:
Love Hörnquist Åstrand
2005-04-10 15:01:21 +00:00
parent f15888e4ec
commit e743a6ca8a
2 changed files with 268 additions and 172 deletions
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220
lib/gssapi/krb5/accept_sec_context.c
View File

@@ -114,6 +114,124 @@ gsskrb5_is_cfx(gss_ctx_id_t context_handle, int *is_cfx)
}
static OM_uint32
gsskrb5_accept_delegated_token
(OM_uint32 * minor_status,
gss_ctx_id_t * context_handle,
krb5_data *fwd_data,
OM_uint32 *flags,
krb5_principal principal,
gss_cred_id_t * delegated_cred_handle
)
{
krb5_ccache ccache = NULL;
krb5_error_code kret;
int32_t ac_flags, ret;
gss_cred_id_t handle = NULL;
if (delegated_cred_handle == NULL) {
/* XXX Create a new delegated_cred_handle? */
ret = 0;
kret = krb5_cc_default (gssapi_krb5_context, &ccache);
if (kret) {
*flags &= ~GSS_C_DELEG_FLAG;
goto end_fwd;
}
} else {
*delegated_cred_handle = NULL;
handle = calloc(1, sizeof(*handle));
if (handle == NULL) {
ret = GSS_S_FAILURE;
*minor_status = ENOMEM;
krb5_set_error_string(gssapi_krb5_context, "out of memory");
gssapi_krb5_set_error_string();
*flags &= ~GSS_C_DELEG_FLAG;
goto end_fwd;
}
if ((ret = gss_duplicate_name(minor_status, principal,
&handle->principal)) != 0) {
*flags &= ~GSS_C_DELEG_FLAG;
ret = 0;
goto end_fwd;
}
kret = krb5_cc_gen_new (gssapi_krb5_context,
&krb5_mcc_ops,
&handle->ccache);
if (kret) {
*flags &= ~GSS_C_DELEG_FLAG;
ret = 0;
goto end_fwd;
}
ccache = handle->ccache;
ret = gss_create_empty_oid_set(minor_status, &handle->mechanisms);
if (ret) {
*flags &= ~GSS_C_DELEG_FLAG;
goto end_fwd;
}
ret = gss_add_oid_set_member(minor_status, GSS_KRB5_MECHANISM,
&handle->mechanisms);
if (ret) {
*flags &= ~GSS_C_DELEG_FLAG;
goto end_fwd;
}
}
kret = krb5_cc_initialize(gssapi_krb5_context, ccache, principal);
if (kret) {
*flags &= ~GSS_C_DELEG_FLAG;
ret = 0;
goto end_fwd;
}
krb5_auth_con_removeflags(gssapi_krb5_context,
(*context_handle)->auth_context,
KRB5_AUTH_CONTEXT_DO_TIME,
&ac_flags);
kret = krb5_rd_cred2(gssapi_krb5_context,
(*context_handle)->auth_context,
ccache,
fwd_data);
if (kret)
gssapi_krb5_set_error_string();
krb5_auth_con_setflags(gssapi_krb5_context,
(*context_handle)->auth_context,
ac_flags);
if (kret) {
*flags &= ~GSS_C_DELEG_FLAG;
ret = GSS_S_FAILURE;
*minor_status = kret;
goto end_fwd;
}
end_fwd:
/* if there was some kind of failure, clean up internal structures */
if ((*flags & GSS_C_DELEG_FLAG) == 0) {
if (handle) {
if (handle->principal)
gss_release_name(minor_status, &handle->principal);
if (handle->mechanisms)
gss_release_oid_set(NULL, &handle->mechanisms);
if (handle->ccache)
krb5_cc_destroy(gssapi_krb5_context, handle->ccache);
free(handle);
handle = NULL;
}
}
if (delegated_cred_handle == NULL) {
if (ccache)
krb5_cc_close(gssapi_krb5_context, ccache);
}
if (handle)
*delegated_cred_handle = handle;
return ret;
}
static OM_uint32
gsskrb5_accept_sec_context
(OM_uint32 * minor_status,
@@ -343,87 +461,6 @@ gsskrb5_accept_sec_context
goto failure;
}
if (fwd_data.length > 0 && (flags & GSS_C_DELEG_FLAG)) {
krb5_ccache ccache;
int32_t ac_flags;
if (delegated_cred_handle == NULL)
/* XXX Create a new delegated_cred_handle? */
kret = krb5_cc_default (gssapi_krb5_context, &ccache);
else {
if ((*delegated_cred_handle =
calloc(1, sizeof(**delegated_cred_handle))) == NULL) {
ret = GSS_S_FAILURE;
*minor_status = ENOMEM;
krb5_set_error_string(gssapi_krb5_context, "out of memory");
gssapi_krb5_set_error_string();
goto failure;
}
if ((ret = gss_duplicate_name(minor_status, ticket->client,
&(*delegated_cred_handle)->principal)) != 0) {
flags &= ~GSS_C_DELEG_FLAG;
free(*delegated_cred_handle);
*delegated_cred_handle = NULL;
goto end_fwd;
}
kret = krb5_cc_gen_new (gssapi_krb5_context,
&krb5_mcc_ops,
&(*delegated_cred_handle)->ccache);
if (kret) {
gss_release_name(minor_status,
&(*delegated_cred_handle)->principal);
free(*delegated_cred_handle);
*delegated_cred_handle = NULL;
goto end_fwd;
}
ccache = (*delegated_cred_handle)->ccache;
}
if (delegated_cred_handle != NULL &&
(*delegated_cred_handle)->mechanisms == NULL) {
ret = gss_create_empty_oid_set(minor_status,
&(*delegated_cred_handle)->mechanisms);
if (ret)
goto failure;
ret = gss_add_oid_set_member(minor_status, GSS_KRB5_MECHANISM,
&(*delegated_cred_handle)->mechanisms);
if (ret)
goto failure;
}
if (kret) {
flags &= ~GSS_C_DELEG_FLAG;
goto end_fwd;
}
kret = krb5_cc_initialize(gssapi_krb5_context,
ccache,
*src_name);
if (kret) {
flags &= ~GSS_C_DELEG_FLAG;
goto end_fwd;
}
krb5_auth_con_removeflags(gssapi_krb5_context,
(*context_handle)->auth_context,
KRB5_AUTH_CONTEXT_DO_TIME,
&ac_flags);
kret = krb5_rd_cred2(gssapi_krb5_context,
(*context_handle)->auth_context,
ccache,
&fwd_data);
krb5_auth_con_setflags(gssapi_krb5_context,
(*context_handle)->auth_context,
ac_flags);
if (kret) {
flags &= ~GSS_C_DELEG_FLAG;
goto end_fwd;
}
end_fwd:
free(fwd_data.data);
}
flags |= GSS_C_TRANS_FLAG;
if (ret_flags)
@@ -477,11 +514,6 @@ gsskrb5_accept_sec_context
}
(*context_handle)->ticket = ticket;
ticket = NULL;
#if 0
krb5_free_ticket (context, ticket);
#endif
{
int32_t seq_number;
@@ -503,6 +535,22 @@ gsskrb5_accept_sec_context
}
}
if (fwd_data.length > 0) {
if (flags & GSS_C_DELEG_FLAG) {
ret = gsskrb5_accept_delegated_token(minor_status,
context_handle,
&fwd_data,
&flags,
ticket->client,
delegated_cred_handle);
if (ret)
goto failure;
}
free(fwd_data.data);
krb5_data_zero(&fwd_data);
}
*minor_status = 0;
return GSS_S_COMPLETE;