Function MsgRead

tools/ngctl/msg.c:129–168

* Read and display the next incoming control message */

 * Read and display the next incoming control message
 */
void
MsgRead(void)
{
	struct ng_mesg *m, *m2;
	struct ng_mesg *ascii;
	char path[NG_PATHSIZ];

	/* Get incoming message (in binary form) */
	if (NgAllocRecvMsg(csock, &m, path) < 0) {
		warn("recv incoming message");
		return;
	}

	/* Ask originating node to convert message to ASCII */
	if (NgSendMsg(csock, path, NGM_GENERIC_COOKIE,
	      NGM_BINARY2ASCII, m, sizeof(*m) + m->header.arglen) < 0
	    || NgAllocRecvMsg(csock, &m2, NULL) < 0) {
		printf("Rec'd %s %d from \"%s\":\n",
		    (m->header.flags & NGF_RESP) != 0 ? "response" : "command",
		    m->header.cmd, path);
		if (m->header.arglen == 0)
			printf("No arguments\n");
		else
			DumpAscii((const u_char *)m->data, m->header.arglen);
		free(m);
		return;
	}

	/* Display message in ASCII form */
	free(m);
	ascii = (struct ng_mesg *)m2->data;
	printf("Rec'd %s \"%s\" (%d) from \"%s\":\n",
	    (ascii->header.flags & NGF_RESP) != 0 ? "response" : "command",
	    ascii->header.cmdstr, ascii->header.cmd, path);
	if (*ascii->data != '\0')
		printf("Args:\t%s\n", ascii->data);
	else
		printf("No arguments\n");
	free(m2);
}