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-rw-r--r--core/tee/se/channel.c142
1 files changed, 142 insertions, 0 deletions
diff --git a/core/tee/se/channel.c b/core/tee/se/channel.c
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+/*
+ * Copyright (c) 2014, Linaro Limited
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <assert.h>
+#include <tee_api_types.h>
+#include <trace.h>
+
+#include <tee/se/session.h>
+#include <tee/se/channel.h>
+#include <tee/se/iso7816.h>
+#include <tee/se/aid.h>
+#include <tee/se/apdu.h>
+
+#include <stdlib.h>
+#include <string.h>
+
+#include "aid_priv.h"
+#include "channel_priv.h"
+
+struct tee_se_channel *tee_se_channel_alloc(struct tee_se_session *s,
+ int channel_id)
+{
+ struct tee_se_channel *c;
+
+ c = malloc(sizeof(struct tee_se_channel));
+ if (c) {
+ c->session = s;
+ c->channel_id = channel_id;
+ c->aid = NULL;
+ c->select_resp = NULL;
+ }
+ return c;
+}
+
+void tee_se_channel_free(struct tee_se_channel *c)
+{
+ assert(c);
+ if (c->aid)
+ tee_se_aid_release(c->aid);
+ if (c->select_resp)
+ apdu_release(to_apdu_base(c->select_resp));
+}
+
+struct tee_se_session *tee_se_channel_get_session(struct tee_se_channel *c)
+{
+ assert(c);
+ return c->session;
+}
+
+int tee_se_channel_get_id(struct tee_se_channel *c)
+{
+ assert(c);
+ return c->channel_id;
+}
+
+void tee_se_channel_set_select_response(struct tee_se_channel *c,
+ struct resp_apdu *resp)
+{
+ assert(c);
+
+ if (c->select_resp)
+ apdu_release(to_apdu_base(c->select_resp));
+ apdu_acquire(to_apdu_base(resp));
+ c->select_resp = resp;
+}
+
+TEE_Result tee_se_channel_get_select_response(struct tee_se_channel *c,
+ struct resp_apdu **resp)
+{
+ assert(c && resp);
+
+ if (c->select_resp) {
+ *resp = c->select_resp;
+ return TEE_SUCCESS;
+ } else {
+ return TEE_ERROR_NO_DATA;
+ }
+}
+
+void tee_se_channel_set_aid(struct tee_se_channel *c,
+ struct tee_se_aid *aid)
+{
+ assert(c);
+ if (c->aid)
+ tee_se_aid_release(c->aid);
+ tee_se_aid_acquire(aid);
+ c->aid = aid;
+}
+
+
+TEE_Result tee_se_channel_select(struct tee_se_channel *c,
+ struct tee_se_aid *aid)
+{
+ assert(c);
+ return iso7816_select(c, aid);
+}
+
+TEE_Result tee_se_channel_select_next(struct tee_se_channel *c)
+{
+ assert(c);
+ return iso7816_select_next(c);
+}
+
+TEE_Result tee_se_channel_transmit(struct tee_se_channel *c,
+ struct cmd_apdu *cmd_apdu, struct resp_apdu *resp_apdu)
+{
+ struct tee_se_session *s;
+ uint8_t *cmd_buf;
+ int cla_channel;
+
+ assert(c && cmd_apdu && resp_apdu);
+
+ s = c->session;
+ cla_channel = iso7816_get_cla_channel(c->channel_id);
+ cmd_buf = apdu_get_data(to_apdu_base(cmd_apdu));
+ cmd_buf[ISO7816_CLA_OFFSET] = ISO7816_CLA | cla_channel;
+ return tee_se_session_transmit(s, cmd_apdu, resp_apdu);
+}