Imported Upstream version 1.1.1+rev1207upstream/1.1.1+rev1207

1 files changed, 296 insertions, 0 deletions

diff --git a/lib/libdvben50221/en50221_app_smartcard.c b/lib/libdvben50221/en50221_app_smartcard.c
new file mode 100644
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--- /dev/null
+++ b/lib/libdvben50221/en50221_app_smartcard.c
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+/*
+    en50221 encoder An implementation for libdvb
+    an implementation for the en50221 transport layer
+
+    Copyright (C) 2004, 2005 Manu Abraham <abraham.manu@gmail.com>
+    Copyright (C) 2005 Julian Scheel (julian at jusst dot de)
+    Copyright (C) 2006 Andrew de Quincey (adq_dvb@lidskialf.net)
+
+    This library is free software; you can redistribute it and/or modify
+    it under the terms of the GNU Lesser General Public License as
+    published by the Free Software Foundation; either version 2.1 of
+    the License, or (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public
+    License along with this library; if not, write to the Free Software
+    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
+*/
+
+#include <string.h>
+#include <libdvbmisc/dvbmisc.h>
+#include <pthread.h>
+#include "en50221_app_smartcard.h"
+#include "en50221_app_tags.h"
+#include "asn_1.h"
+
+struct en50221_app_smartcard {
+	struct en50221_app_send_functions *funcs;
+
+	en50221_app_smartcard_command_callback command_callback;
+	void *command_callback_arg;
+
+	en50221_app_smartcard_send_callback send_callback;
+	void *send_callback_arg;
+
+	pthread_mutex_t lock;
+};
+
+static int en50221_app_smartcard_parse_command(struct en50221_app_smartcard *smartcard,
+					       uint8_t slot_id,
+					       uint16_t session_number,
+					       uint8_t * data,
+					       uint32_t data_length);
+
+static int en50221_app_smartcard_parse_send(struct en50221_app_smartcard *smartcard,
+					    uint8_t slot_id,
+					    uint16_t session_number,
+					    uint8_t * data,
+					    uint32_t data_length);
+
+
+struct en50221_app_smartcard *en50221_app_smartcard_create(struct en50221_app_send_functions *funcs)
+{
+	struct en50221_app_smartcard *smartcard = NULL;
+
+	// create structure and set it up
+	smartcard = malloc(sizeof(struct en50221_app_smartcard));
+	if (smartcard == NULL) {
+		return NULL;
+	}
+	smartcard->funcs = funcs;
+	smartcard->command_callback = NULL;
+	smartcard->send_callback = NULL;
+
+	pthread_mutex_init(&smartcard->lock, NULL);
+
+	// done
+	return smartcard;
+}
+
+void en50221_app_smartcard_destroy(struct en50221_app_smartcard *smartcard)
+{
+	pthread_mutex_destroy(&smartcard->lock);
+	free(smartcard);
+}
+
+void en50221_app_smartcard_register_command_callback(struct en50221_app_smartcard *smartcard,
+						     en50221_app_smartcard_command_callback callback, void *arg)
+{
+	pthread_mutex_lock(&smartcard->lock);
+	smartcard->command_callback = callback;
+	smartcard->command_callback_arg = arg;
+	pthread_mutex_unlock(&smartcard->lock);
+}
+
+void en50221_app_smartcard_register_send_callback(struct en50221_app_smartcard *smartcard,
+						  en50221_app_smartcard_send_callback callback, void *arg)
+{
+	pthread_mutex_lock(&smartcard->lock);
+	smartcard->send_callback = callback;
+	smartcard->send_callback_arg = arg;
+	pthread_mutex_unlock(&smartcard->lock);
+}
+
+int en50221_app_smartcard_command_reply(struct en50221_app_smartcard *smartcard,
+					uint16_t session_number,
+					uint8_t reply_id, uint8_t status,
+					uint8_t *data,
+					uint32_t data_length)
+{
+	uint8_t hdr[10];
+	struct iovec iovec[2];
+	int iov_count = 0;
+
+	// the tag
+	hdr[0] = (TAG_SMARTCARD_REPLY >> 16) & 0xFF;
+	hdr[1] = (TAG_SMARTCARD_REPLY >> 8) & 0xFF;
+	hdr[2] = TAG_SMARTCARD_REPLY & 0xFF;
+
+	// the rest of the data
+	if (reply_id == SMARTCARD_REPLY_ID_ANSW_TO_RESET) {
+		// encode the length field
+		int length_field_len;
+		if ((length_field_len = asn_1_encode(data_length + 2, data + 3, 3)) < 0) {
+			return -1;
+		}
+		// the rest of the header
+		hdr[3 + length_field_len] = reply_id;
+		hdr[3 + length_field_len + 1] = status;
+		iovec[0].iov_base = hdr;
+		iovec[0].iov_len = 3 + length_field_len + 2;
+
+		// the data
+		iovec[1].iov_base = data;
+		iovec[1].iov_len = data_length;
+		iov_count = 2;
+	} else {
+		hdr[3] = 2;
+		hdr[4] = reply_id;
+		hdr[5] = status;
+		iovec[0].iov_base = data;
+		iovec[0].iov_len = 6;
+		iov_count = 1;
+	}
+
+	return smartcard->funcs->send_datav(smartcard->funcs->arg, session_number, iovec, iov_count);
+}
+
+int en50221_app_smartcard_receive(struct en50221_app_smartcard *smartcard,
+				  uint16_t session_number,
+				  uint8_t *data,
+				  uint32_t data_length,
+				  uint8_t SW1, uint8_t SW2)
+{
+	uint8_t buf[10];
+	uint8_t trailer[10];
+
+	// set up the tag
+	buf[0] = (TAG_SMARTCARD_RCV >> 16) & 0xFF;
+	buf[1] = (TAG_SMARTCARD_RCV >> 8) & 0xFF;
+	buf[2] = TAG_SMARTCARD_RCV & 0xFF;
+
+	// encode the length field
+	int length_field_len;
+	if ((length_field_len = asn_1_encode(data_length + 2, buf + 3, 3)) < 0) {
+		return -1;
+	}
+	// set up the trailer
+	trailer[0] = SW1;
+	trailer[1] = SW2;
+
+	// build the iovecs
+	struct iovec iov[3];
+	iov[0].iov_base = buf;
+	iov[0].iov_len = 3 + length_field_len;
+	iov[1].iov_base = data;
+	iov[1].iov_len = data_length;
+	iov[2].iov_base = trailer;
+	iov[2].iov_len = 2;
+
+	// create the data and send it
+	return smartcard->funcs->send_datav(smartcard->funcs->arg,
+					    session_number, iov, 3);
+}
+
+int en50221_app_smartcard_message(struct en50221_app_smartcard *smartcard,
+				  uint8_t slot_id,
+				  uint16_t session_number,
+				  uint32_t resource_id,
+				  uint8_t *data, uint32_t data_length)
+{
+	(void) resource_id;
+
+	// get the tag
+	if (data_length < 3) {
+		print(LOG_LEVEL, ERROR, 1, "Received short data\n");
+		return -1;
+	}
+	uint32_t tag = (data[0] << 16) | (data[1] << 8) | data[2];
+
+	switch (tag) {
+	case TAG_SMARTCARD_COMMAND:
+		return en50221_app_smartcard_parse_command(smartcard,
+							   slot_id,
+							   session_number,
+							   data + 3,
+							   data_length - 3);
+	case TAG_SMARTCARD_SEND:
+		return en50221_app_smartcard_parse_send(smartcard, slot_id,
+							session_number,
+							data + 3,
+							data_length - 3);
+	}
+
+	print(LOG_LEVEL, ERROR, 1, "Received unexpected tag %x\n", tag);
+	return -1;
+}
+
+
+
+
+
+
+
+static int en50221_app_smartcard_parse_command(struct en50221_app_smartcard *smartcard,
+					       uint8_t slot_id,
+					       uint16_t session_number,
+					       uint8_t * data,
+					       uint32_t data_length)
+{
+	if (data_length != 2) {
+		print(LOG_LEVEL, ERROR, 1, "Received short data\n");
+		return -1;
+	}
+	if (data[0] != 1) {
+		print(LOG_LEVEL, ERROR, 1, "Received short data\n");
+		return -1;
+	}
+	uint8_t command_id = data[1];
+
+	// tell the app
+	pthread_mutex_lock(&smartcard->lock);
+	en50221_app_smartcard_command_callback cb = smartcard->command_callback;
+	void *cb_arg = smartcard->command_callback_arg;
+	pthread_mutex_unlock(&smartcard->lock);
+	if (cb) {
+		return cb(cb_arg, slot_id, session_number, command_id);
+	}
+	return 0;
+}
+
+static int en50221_app_smartcard_parse_send(struct en50221_app_smartcard *smartcard,
+					    uint8_t slot_id,
+					    uint16_t session_number,
+					    uint8_t * data,
+					    uint32_t data_length)
+{
+	// first of all, decode the length field
+	uint16_t asn_data_length;
+	int length_field_len;
+	if ((length_field_len = asn_1_decode(&asn_data_length, data, data_length)) < 0) {
+		print(LOG_LEVEL, ERROR, 1, "ASN.1 decode error\n");
+		return -1;
+	}
+	// check it
+	if (asn_data_length < 8) {
+		print(LOG_LEVEL, ERROR, 1, "Received short data\n");
+		return -1;
+	}
+	if (asn_data_length > (data_length - length_field_len)) {
+		print(LOG_LEVEL, ERROR, 1, "Received short data\n");
+		return -1;
+	}
+	data += length_field_len;
+
+	// parse
+	uint8_t CLA = data[0];
+	uint8_t INS = data[1];
+	uint8_t P1 = data[2];
+	uint8_t P2 = data[3];
+	uint16_t length_in = (data[4] << 8) | data[5];
+	uint8_t *data_in = data + 6;
+
+	// validate the length
+	if ((length_in + 8) != asn_data_length) {
+		print(LOG_LEVEL, ERROR, 1, "Received short data\n");
+		return -1;
+	}
+	uint16_t length_out =
+	    (data[6 + length_in] << 8) | data[6 + length_in + 1];
+
+	// tell the app
+	pthread_mutex_lock(&smartcard->lock);
+	en50221_app_smartcard_send_callback cb = smartcard->send_callback;
+	void *cb_arg = smartcard->send_callback_arg;
+	pthread_mutex_unlock(&smartcard->lock);
+	if (cb) {
+		return cb(cb_arg, slot_id, session_number, CLA, INS, P1,
+			  P2, data_in, length_in, length_out);
+	}
+	return 0;
+}