From ccc9dc3bb49ac258c856d8478346b4ce829b188e Mon Sep 17 00:00:00 2001
From: nicm <nicm>
Date: Thu, 9 Jun 2022 09:12:55 +0000
Subject: If an application gives the first parameter to OSC 52, validate and
 pass on to outside terminal. GitHub issue 3192.

---
 input.c | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

(limited to 'input.c')

diff --git a/input.c b/input.c
index 693b6f32..fa9dfcdf 100644
--- a/input.c
+++ b/input.c
@@ -2693,6 +2693,9 @@ input_osc_52(struct input_ctx *ictx, const char *p)
 	int			 outlen, state;
 	struct screen_write_ctx	 ctx;
 	struct paste_buffer	*pb;
+	const char*              allow = "cpqs01234567";
+	char                     flags[sizeof allow] = "";
+	u_int			 i, j = 0;
 
 	if (wp == NULL)
 		return;
@@ -2707,6 +2710,12 @@ input_osc_52(struct input_ctx *ictx, const char *p)
 		return;
 	log_debug("%s: %s", __func__, end);
 
+	for (i = 0; p + i != end; i++) {
+		if (strchr(allow, p[i]) != NULL && strchr(flags, p[i]) == NULL)
+			flags[j++] = p[i];
+	}
+	log_debug("%s: %.*s %s", __func__, (int)(end - p - 1), p, flags);
+
 	if (strcmp(end, "?") == 0) {
 		if ((pb = paste_get_top(NULL)) != NULL)
 			buf = paste_buffer_data(pb, &len);
@@ -2728,7 +2737,7 @@ input_osc_52(struct input_ctx *ictx, const char *p)
 	}
 
 	screen_write_start_pane(&ctx, wp, NULL);
-	screen_write_setselection(&ctx, out, outlen);
+	screen_write_setselection(&ctx, flags, out, outlen);
 	screen_write_stop(&ctx);
 	notify_pane("pane-set-clipboard", wp);
 
-- 
cgit