import_sec_context.c [plain text]
#include "gsskrb5_locl.h"
OM_uint32 GSSAPI_CALLCONV
_gsskrb5_import_sec_context (
OM_uint32 * minor_status,
const gss_buffer_t interprocess_token,
gss_ctx_id_t * context_handle
)
{
OM_uint32 ret = GSS_S_FAILURE;
krb5_context context;
krb5_error_code kret;
krb5_storage *sp;
krb5_auth_context ac;
krb5_address local, remote;
krb5_address *localp, *remotep;
krb5_data data;
gss_buffer_desc buffer;
krb5_keyblock keyblock;
int32_t flags, tmp;
gsskrb5_ctx ctx;
gss_name_t name;
GSSAPI_KRB5_INIT (&context);
*context_handle = GSS_C_NO_CONTEXT;
localp = remotep = NULL;
sp = krb5_storage_from_mem (interprocess_token->value,
interprocess_token->length);
if (sp == NULL) {
*minor_status = ENOMEM;
return GSS_S_FAILURE;
}
ctx = calloc(1, sizeof(*ctx));
if (ctx == NULL) {
*minor_status = ENOMEM;
krb5_storage_free (sp);
return GSS_S_FAILURE;
}
HEIMDAL_MUTEX_init(&ctx->ctx_id_mutex);
kret = krb5_auth_con_init (context,
&ctx->auth_context);
if (kret) {
*minor_status = kret;
ret = GSS_S_FAILURE;
goto failure;
}
*minor_status = 0;
if (krb5_ret_int32 (sp, &flags) != 0)
goto failure;
ac = ctx->auth_context;
if (krb5_ret_int32 (sp, &tmp) != 0)
goto failure;
ac->flags = tmp;
if (flags & SC_LOCAL_ADDRESS) {
if (krb5_ret_address (sp, localp = &local) != 0)
goto failure;
}
if (flags & SC_REMOTE_ADDRESS) {
if (krb5_ret_address (sp, remotep = &remote) != 0)
goto failure;
}
krb5_auth_con_setaddrs (context, ac, localp, remotep);
if (localp)
krb5_free_address (context, localp);
if (remotep)
krb5_free_address (context, remotep);
localp = remotep = NULL;
if (krb5_ret_int16 (sp, &ac->local_port) != 0)
goto failure;
if (krb5_ret_int16 (sp, &ac->remote_port) != 0)
goto failure;
if (flags & SC_KEYBLOCK) {
if (krb5_ret_keyblock (sp, &keyblock) != 0)
goto failure;
krb5_auth_con_setkey (context, ac, &keyblock);
krb5_free_keyblock_contents (context, &keyblock);
}
if (flags & SC_LOCAL_SUBKEY) {
if (krb5_ret_keyblock (sp, &keyblock) != 0)
goto failure;
krb5_auth_con_setlocalsubkey (context, ac, &keyblock);
krb5_free_keyblock_contents (context, &keyblock);
}
if (flags & SC_REMOTE_SUBKEY) {
if (krb5_ret_keyblock (sp, &keyblock) != 0)
goto failure;
krb5_auth_con_setremotesubkey (context, ac, &keyblock);
krb5_free_keyblock_contents (context, &keyblock);
}
if (krb5_ret_uint32 (sp, &ac->local_seqnumber))
goto failure;
if (krb5_ret_uint32 (sp, &ac->remote_seqnumber))
goto failure;
if (krb5_ret_int32 (sp, &tmp) != 0)
goto failure;
ac->keytype = tmp;
if (krb5_ret_int32 (sp, &tmp) != 0)
goto failure;
ac->cksumtype = tmp;
if (krb5_ret_data (sp, &data))
goto failure;
buffer.value = data.data;
buffer.length = data.length;
ret = _gsskrb5_import_name (minor_status, &buffer, GSS_C_NT_EXPORT_NAME,
&name);
if (ret) {
ret = _gsskrb5_import_name (minor_status, &buffer, GSS_C_NO_OID,
&name);
if (ret) {
krb5_data_free (&data);
goto failure;
}
}
ctx->source = (krb5_principal)name;
krb5_data_free (&data);
if (krb5_ret_data (sp, &data) != 0)
goto failure;
buffer.value = data.data;
buffer.length = data.length;
ret = _gsskrb5_import_name (minor_status, &buffer, GSS_C_NT_EXPORT_NAME,
&name);
if (ret) {
ret = _gsskrb5_import_name (minor_status, &buffer, GSS_C_NO_OID,
&name);
if (ret) {
krb5_data_free (&data);
goto failure;
}
}
ctx->target = (krb5_principal)name;
krb5_data_free (&data);
if (krb5_ret_int32 (sp, &tmp))
goto failure;
ctx->flags = tmp;
if (krb5_ret_int32 (sp, &tmp))
goto failure;
ctx->more_flags = tmp;
if (krb5_ret_int32 (sp, &tmp))
goto failure;
ctx->endtime = tmp;
ret = _gssapi_msg_order_import(minor_status, sp, &ctx->gk5c.order);
if (ret)
goto failure;
krb5_storage_free (sp);
_gsskrb5i_is_cfx(context, ctx, (ctx->more_flags & LOCAL) == 0);
*context_handle = (gss_ctx_id_t)ctx;
return GSS_S_COMPLETE;
failure:
krb5_auth_con_free (context,
ctx->auth_context);
if (ctx->source != NULL)
krb5_free_principal(context, ctx->source);
if (ctx->target != NULL)
krb5_free_principal(context, ctx->target);
if (localp)
krb5_free_address (context, localp);
if (remotep)
krb5_free_address (context, remotep);
if(ctx->gk5c.order)
_gssapi_msg_order_destroy(&ctx->gk5c.order);
HEIMDAL_MUTEX_destroy(&ctx->ctx_id_mutex);
krb5_storage_free (sp);
free (ctx);
*context_handle = GSS_C_NO_CONTEXT;
return ret;
}