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-rw-r--r--lib/libdvben50221/en50221_app_smartcard.c296
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
@@ -0,0 +1,296 @@
+/*
+ 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;
+}
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