reminder for phase 2

Author: devnexen

ext/sockets/sockets.c

@@ -1403,7 +1403,7 @@ PHP_FUNCTION(socket_bind)
 			}
 #endif
 		default:
-			zend_argument_value_error(1, "must be one of AF_UNIX, AF_INET, or AF_INET6");
+			zend_argument_value_error(1, "must be one of AF_UNIX, AF_PACKET, AF_INET, or AF_INET6");
 			RETURN_THROWS();
 	}
 
@@ -1504,6 +1504,9 @@ PHP_FUNCTION(socket_recvfrom)
 	struct sockaddr_in	sin;
 #ifdef HAVE_IPV6
 	struct sockaddr_in6	sin6;
+#endif
+#ifdef AF_PACKET
+	struct sockaddr_ll     sll;
 #endif
 	char				addrbuf[INET6_ADDRSTRLEN];
 	socklen_t			slen;
@@ -1608,9 +1611,39 @@ PHP_FUNCTION(socket_recvfrom)
 			ZEND_TRY_ASSIGN_REF_STRING(arg5, addrbuf[0] ? addrbuf : "::");
 			ZEND_TRY_ASSIGN_REF_LONG(arg6, ntohs(sin6.sin6_port));
 			break;
+#endif
+#ifdef AF_PACKET
+		case AF_PACKET:
+			// TODO expose and use proper ethernet frame type instead i.e. src mac, dst mac and payload to userland
+			// ditto for socket_sendto
+			slen = sizeof(sll);
+			memset(&sll, 0, sizeof(sll));
+			sll.sll_family = AF_PACKET;
+			char ifrname[IFNAMSIZ];
+
+			retval = recvfrom(php_sock->bsd_socket, ZSTR_VAL(recv_buf), arg3, arg4, (struct sockaddr *)&sll, (socklen_t *)&slen);
+
+			if (retval < 0) {
+				PHP_SOCKET_ERROR(php_sock, "unable to recvfrom", errno);
+				zend_string_efree(recv_buf);
+				RETURN_FALSE;
+			}
+			ZSTR_LEN(recv_buf) = retval;
+			ZSTR_VAL(recv_buf)[ZSTR_LEN(recv_buf)] = '\0';
+
+			if (UNEXPECTED(!if_indextoname(sll.sll_ifindex, ifrname))) {
+				PHP_SOCKET_ERROR(php_sock, "unable to get the interface name", errno);
+				zend_string_efree(recv_buf);
+				RETURN_FALSE;
+			}
+
+			ZEND_TRY_ASSIGN_REF_NEW_STR(arg2, recv_buf);
+			ZEND_TRY_ASSIGN_REF_STRING(arg5, ifrname);
+			ZEND_TRY_ASSIGN_REF_LONG(arg6, sll.sll_ifindex);
+			break;
 #endif
 		default:
-			zend_argument_value_error(1, "must be one of AF_UNIX, AF_INET, or AF_INET6");
+			zend_argument_value_error(1, "must be one of AF_UNIX, AF_PACKET, AF_INET, or AF_INET6");
 			RETURN_THROWS();
 	}