Implement reading stream for socketcan_t

Will read a can_message_t object from socket

Change-Id: Ibe3561f9d7bbf4e41b6fd81fa4672bae1c14aca5
Signed-off-by: Romain Forlot <romain.forlot@iot.bzh>

2 files changed, 27 insertions, 2 deletions

diff --git a/CAN-binder/low-can-binding/utils/socketcan.cpp b/CAN-binder/low-can-binding/utils/socketcan.cpp
index 17ce6ce..c462f76 100644
--- a/CAN-binder/low-can-binding/utils/socketcan.cpp
+++ b/CAN-binder/low-can-binding/utils/socketcan.cpp
@@ -24,6 +24,7 @@
 
 #include "socketcan.hpp"
 #include "low-can-binding.hpp"
+#include "can-message.hpp"
 
 namespace utils
 {
@@ -139,6 +140,27 @@ namespace utils
 		return socket_;
 	}
 
+	socketcan_t& operator>>(socketcan_t& s, const can_message_t& cm)
+	{
+		struct {
+			struct bcm_msg_head msg_head;
+			struct canfd_frame frames;
+		} msg;
+
+		struct sockaddr_can addr = s.get_tx_address();
+		socklen_t addrlen = sizeof(addr);
+		struct ifreq ifr;
+
+		ssize_t nbytes = ::recvfrom(s.socket(), &msg, sizeof(msg), 0, (struct sockaddr*)&addr, &addrlen);
+		ifr.ifr_ifindex = addr.can_ifindex;
+		ioctl(s.socket(), SIOCGIFNAME, &ifr);
+
+		printf("Data available: %i bytes read\n", (int)nbytes);
+		printf("read: Found on bus %s:\n id: %X, length: %X, data %02X%02X%02X%02X%02X%02X%02X%02X\n", ifr.ifr_name, msg.msg_head.can_id, msg.frames.len,
+			msg.frames.data[0], msg.frames.data[1], msg.frames.data[2], msg.frames.data[3], msg.frames.data[4], msg.frames.data[5], msg.frames.data[6], msg.frames.data[7]);
+		return s;
+	}
+
 	socketcan_t& operator<<(socketcan_t& s, const struct bcm_msg_head& obj)
 	{
 		struct sockaddr_can addr = s.get_tx_address();
diff --git a/CAN-binder/low-can-binding/utils/socketcan.hpp b/CAN-binder/low-can-binding/utils/socketcan.hpp
index 2c79036..c7cd5c9 100644
--- a/CAN-binder/low-can-binding/utils/socketcan.hpp
+++ b/CAN-binder/low-can-binding/utils/socketcan.hpp
@@ -17,10 +17,12 @@
  * limitations under the License.
  */
 
+#include <vector>
+
 #include <sys/socket.h>
 #include <linux/can/bcm.h>
 
-#include <vector>
+#include "../can/can-message.hpp"
 
 #define INVALID_SOCKET -1
 
@@ -71,10 +73,11 @@ namespace utils
 			s << obj;
 		return s;
 	}
-
 	socketcan_t& operator<<(socketcan_t& s, const canfd_frame& frame);
 	socketcan_t& operator<<(socketcan_t& s, const can_frame& frame);
 	socketcan_t& operator<<(socketcan_t& s, const struct basic_bcm_msg<can_frame>& obj);
 	socketcan_t& operator<<(socketcan_t& s, const struct canfd_bcm_msg& obj);
 	socketcan_t& operator<<(socketcan_t& s, const struct bcm_msg_head& obj);
+
+	socketcan_t& operator>>(socketcan_t& s, const can_message_t& cm);
 }