Imported Upstream version 1.1.1+rev1207upstream/1.1.1+rev1207

1 files changed, 159 insertions, 0 deletions

diff --git a/lib/libdvbapi/dvbca.c b/lib/libdvbapi/dvbca.c
new file mode 100644
index 0000000..8261cd2
--- /dev/null
+++ b/lib/libdvbapi/dvbca.c
@@ -0,0 +1,159 @@
+/*
+ * libdvbca - interface onto raw CA devices
+ *
+ * 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 library 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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
+ */
+
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+#include <sys/param.h>
+#include <sys/ioctl.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <ctype.h>
+#include <errno.h>
+#include <linux/dvb/ca.h>
+#include "dvbca.h"
+
+
+int dvbca_open(int adapter, int cadevice)
+{
+	char filename[PATH_MAX+1];
+	int fd;
+
+	sprintf(filename, "/dev/dvb/adapter%i/ca%i", adapter, cadevice);
+	if ((fd = open(filename, O_RDWR)) < 0) {
+		// if that failed, try a flat /dev structure
+		sprintf(filename, "/dev/dvb%i.ca%i", adapter, cadevice);
+		fd = open(filename, O_RDWR);
+	}
+
+	return fd;
+}
+
+int dvbca_reset(int fd, uint8_t slot)
+{
+	return ioctl(fd, CA_RESET, (1 << slot));
+}
+
+int dvbca_get_interface_type(int fd, uint8_t slot)
+{
+	ca_slot_info_t info;
+
+	info.num = slot;
+	if (ioctl(fd, CA_GET_SLOT_INFO, &info))
+		return -1;
+
+	if (info.type & CA_CI_LINK)
+		return DVBCA_INTERFACE_LINK;
+	if (info.type & CA_CI)
+		return DVBCA_INTERFACE_HLCI;
+
+	return -1;
+}
+
+int dvbca_get_cam_state(int fd, uint8_t slot)
+{
+	ca_slot_info_t info;
+
+	info.num = slot;
+	if (ioctl(fd, CA_GET_SLOT_INFO, &info))
+		return -1;
+
+	if (info.flags == 0)
+		return DVBCA_CAMSTATE_MISSING;
+	if (info.flags & CA_CI_MODULE_READY)
+		return DVBCA_CAMSTATE_READY;
+	if (info.flags & CA_CI_MODULE_PRESENT)
+		return DVBCA_CAMSTATE_INITIALISING;
+
+	return -1;
+}
+
+int dvbca_link_write(int fd, uint8_t slot, uint8_t connection_id,
+		     uint8_t *data, uint16_t data_length)
+{
+	uint8_t *buf = malloc(data_length + 2);
+	if (buf == NULL)
+		return -1;
+
+	buf[0] = slot;
+	buf[1] = connection_id;
+	memcpy(buf+2, data, data_length);
+
+	int result = write(fd, buf, data_length+2);
+	free(buf);
+	return result;
+}
+
+int dvbca_link_read(int fd, uint8_t *slot, uint8_t *connection_id,
+		     uint8_t *data, uint16_t data_length)
+{
+	int size;
+
+	uint8_t *buf = malloc(data_length + 2);
+	if (buf == NULL)
+		return -1;
+
+	if ((size = read(fd, buf, data_length+2)) < 2)
+		return -1;
+
+	*slot = buf[0];
+	*connection_id = buf[1];
+	memcpy(data, buf+2, size-2);
+	free(buf);
+
+	return size - 2;
+}
+
+int dvbca_hlci_write(int fd, uint8_t *data, uint16_t data_length)
+{
+	struct ca_msg msg;
+
+	if (data_length > 256) {
+		return -1;
+	}
+	memset(&msg, 0, sizeof(msg));
+	msg.length = data_length;
+
+	memcpy(msg.msg, data, data_length);
+
+	return ioctl(fd, CA_SEND_MSG, &msg);
+}
+
+int dvbca_hlci_read(int fd, uint32_t app_tag, uint8_t *data,
+		    uint16_t data_length)
+{
+	struct ca_msg msg;
+
+	if (data_length > 256) {
+		data_length = 256;
+	}
+	memset(&msg, 0, sizeof(msg));
+	msg.length = data_length;
+	msg.msg[0] = app_tag >> 16;
+	msg.msg[1] = app_tag >> 8;
+	msg.msg[2] = app_tag;
+
+	int status = ioctl(fd, CA_GET_MSG, &msg);
+	if (status < 0) return status;
+
+	if (msg.length > data_length) msg.length = data_length;
+	memcpy(data, msg.msg, msg.length);
+	return msg.length;
+}