Merge pull request #329 from DrDoof/feat/cmd-output

httpd: answer /cmd with what the command printed, and show it in the console tab

httpd/httpd.c

@@ -21,6 +21,7 @@
 
 extern volatile __xdata uint8_t sfr_data[4];
 extern volatile __xdata uint32_t ticks;
+extern __xdata uint8_t cmd_capture;	/* owned by rtlplayground.c, see write_char_no_syslog() */
 extern __code uint8_t * __code hex;
 extern __code struct f_data f_data[];
 extern __code char * __code mime_strings[];
@@ -625,12 +626,29 @@ static void handle_firmware_fragment(__xdata uint8_t *p)
 
 static void run_cmd_body(__xdata uint8_t *body)
 {
+	uint16_t hdr_len = strtox(outbuf, HTTP_RESPONCE_TXT);
+
+	slen = hdr_len;
+	cmd_capture = 1;
 	execute_commands(body);
+	if (cmd_capture == 2)
+		slen += strtox(outbuf + slen, CMD_TRUNCATED);
+	cmd_capture = 0;
+	/* Commands that configure something print nothing at all. Saying
+	 * so beats an empty body, which reads the same as "nothing ran".
+	 * Only on success: a silent failure must not answer with "OK". */
+	if (err_status == ERR_OK && slen == hdr_len)
+		slen += strtox(outbuf + slen, "OK\n");
+	/* On a parse error keep what the parser printed, because that text
+	 * is the explanation, and only restate the status. "400 NO" is as
+	 * long as "200 OK", so the header does not have to be rebuilt. */
 	if (err_status != ERR_OK) {
-		send_bad_request();
-		return;
+		outbuf[9] = '4';
+		outbuf[10] = '0';
+		outbuf[11] = '0';
+		outbuf[13] = 'N';
+		outbuf[14] = 'O';
 	}
-	send_ok();
 }