13920 support for hiding the cursor on the console

13921 tem could support longer attribute chains
13922 terminfo smso/bold fixups for sun-color
Reviewed by: Toomas Soome <tsoome@me.com>
Approved by: Dan McDonald <danmcd@mnx.io>

2 files changed, 71 insertions, 6 deletions

diff --git a/usr/src/uts/common/io/tem_safe.c b/usr/src/uts/common/io/tem_safe.c
index 04e598f994..10b2cc8cf2 100644
--- a/usr/src/uts/common/io/tem_safe.c
+++ b/usr/src/uts/common/io/tem_safe.c
@@ -27,6 +27,7 @@
 /*
  * Copyright 2016 Joyent, Inc.
  * Copyright 2021 Toomas Soome <tsoome@me.com>
+ * Copyright 2021 RackTop Systems, Inc.
  */
 
 /*
@@ -379,7 +380,7 @@ tem_safe_terminal_emulate(
 	ASSERT((MUTEX_HELD(&tems.ts_lock) && MUTEX_HELD(&tem->tvs_lock)) ||
 	    called_from == CALLED_FROM_STANDALONE);
 
-	if (tem->tvs_isactive)
+	if (tem->tvs_isactive && !tem->tvs_cursor_hidden)
 		tem_safe_callback_cursor(tem,
 		    VIS_HIDE_CURSOR, credp, called_from);
 
@@ -391,7 +392,7 @@ tem_safe_terminal_emulate(
 	 */
 	tem_safe_send_data(tem, credp, called_from);
 
-	if (tem->tvs_isactive)
+	if (tem->tvs_isactive && !tem->tvs_cursor_hidden)
 		tem_safe_callback_cursor(tem,
 		    VIS_DISPLAY_CURSOR, credp, called_from);
 }
@@ -1165,6 +1166,49 @@ tem_safe_chkparam(struct tem_vt_state *tem, tem_char_t ch, cred_t *credp,
 	tem->tvs_state = A_STATE_START;
 }
 
+static void
+tem_safe_chkparam_qmark(struct tem_vt_state *tem, tem_char_t ch, cred_t *credp,
+    enum called_from called_from)
+{
+	ASSERT((called_from == CALLED_FROM_STANDALONE) ||
+	    MUTEX_HELD(&tem->tvs_lock));
+
+	switch (ch) {
+	case 'h': /* DEC private mode set */
+		tem_safe_setparam(tem, 1, 1);
+		switch (tem->tvs_params[0]) {
+		case 25: /* show cursor */
+			/*
+			 * Note that cursor is not displayed either way
+			 * at this entry point.  Clearing the flag ensures
+			 * that on exit from tem_safe_terminal_emulate
+			 * we will display the cursor.
+			 */
+			tem_safe_send_data(tem, credp, called_from);
+			tem->tvs_cursor_hidden = B_FALSE;
+			break;
+		}
+		break;
+
+	case 'l':
+		/* DEC private mode reset */
+		tem_safe_setparam(tem, 1, 1);
+		switch (tem->tvs_params[0]) {
+		case 25: /* hide cursor */
+			/*
+			 * Note that the cursor is not displayed already.
+			 * This is true regardless of the flag state.
+			 * Setting this flag ensures we won't display it
+			 * on exit from tem_safe_terminal_emulate.
+			 */
+			tem_safe_send_data(tem, credp, called_from);
+			tem->tvs_cursor_hidden = B_TRUE;
+			break;
+		}
+		break;
+	}
+	tem->tvs_state = A_STATE_START;
+}
 
 /*
  * Gather the parameters of an ANSI escape sequence
@@ -1180,9 +1224,25 @@ tem_safe_getparams(struct tem_vt_state *tem, tem_char_t ch,
 		tem->tvs_paramval = ((tem->tvs_paramval * 10) + (ch - '0'));
 		tem->tvs_gotparam = B_TRUE;  /* Remember got parameter */
 		return; /* Return immediately */
-	} else if (tem->tvs_state == A_STATE_CSI_EQUAL ||
-	    tem->tvs_state == A_STATE_CSI_QMARK) {
+	} else if (tem->tvs_state == A_STATE_CSI_EQUAL) {
 		tem->tvs_state = A_STATE_START;
+	} else if (tem->tvs_state == A_STATE_CSI_QMARK) {
+		if (tem->tvs_curparam < TEM_MAXPARAMS) {
+			if (tem->tvs_gotparam) {
+				/* get the parameter value */
+				tem->tvs_params[tem->tvs_curparam] =
+				    tem->tvs_paramval;
+			}
+			tem->tvs_curparam++;
+		}
+		if (ch == ';') {
+			/* Restart parameter search */
+			tem->tvs_gotparam = B_FALSE;
+			tem->tvs_paramval = 0; /* No parameter value yet */
+		} else {
+			/* Handle escape sequence */
+			tem_safe_chkparam_qmark(tem, ch, credp, called_from);
+		}
 	} else {
 		if (tem->tvs_curparam < TEM_MAXPARAMS) {
 			if (tem->tvs_gotparam) {
@@ -1196,7 +1256,7 @@ tem_safe_getparams(struct tem_vt_state *tem, tem_char_t ch,
 		if (ch == ';') {
 			/* Restart parameter search */
 			tem->tvs_gotparam = B_FALSE;
-			tem->tvs_paramval = 0; /* No parame value yet */
+			tem->tvs_paramval = 0; /* No parameter value yet */
 		} else {
 			/* Handle escape sequence */
 			tem_safe_chkparam(tem, ch, credp, called_from);
diff --git a/usr/src/uts/common/sys/tem_impl.h b/usr/src/uts/common/sys/tem_impl.h
index 202eebb45b..d8731efc55 100644
--- a/usr/src/uts/common/sys/tem_impl.h
+++ b/usr/src/uts/common/sys/tem_impl.h
@@ -29,6 +29,10 @@
 /*	Copyright (c) 1984, 1986, 1987, 1988, 1989, 1990 AT&T	*/
 /*	  All Rights Reserved	*/
 
+/*
+ * Copyright 2021 RackTop Systems, Inc.
+ */
+
 #ifndef	_SYS_TEM_IMPL_H
 #define	_SYS_TEM_IMPL_H
 
@@ -76,7 +80,7 @@ extern "C" {
 #define	TEM_ATTR(c)		(((c) & TEM_ATTR_MASK) << 21)
 #define	TEM_ATTR_ISSET(c, a)	((TEM_CHAR_ATTR(c) & (a)) == (a))
 
-#define	TEM_MAXPARAMS	5	/* maximum number of ANSI paramters */
+#define	TEM_MAXPARAMS	32	/* maximum number of ANSI paramters */
 #define	TEM_MAXFKEY	30	/* max length of function key with <ESC>Q */
 
 #define	TEM_SCROLL_UP		0
@@ -228,6 +232,7 @@ struct tem_vt_state {
 
 	boolean_t	tvs_isactive;
 	boolean_t	tvs_initialized;	/* initialization flag */
+	boolean_t	tvs_cursor_hidden;
 
 	list_node_t	tvs_list_node;
 };