From c0ae94b2438b97a30af43b3d603da6637c195858 Mon Sep 17 00:00:00 2001
From: Alexander Bocken <alexander@bocken.org>
Date: Mon, 3 Jan 2022 14:41:00 +0100
Subject: [PATCH] applied password patch

---
 dmenu.1 |  5 ++++-
 dmenu.c | 20 +++++++++++++++++---
 2 files changed, 21 insertions(+), 4 deletions(-)

diff --git a/dmenu.1 b/dmenu.1
index 461cc20..a1fa51b 100644
--- a/dmenu.1
+++ b/dmenu.1
@@ -3,7 +3,7 @@
 dmenu \- dynamic menu
 .SH SYNOPSIS
 .B dmenu
-.RB [ \-bfinv ]
+.RB [ \-bfinvP ]
 .RB [ \-l
 .IR lines ]
 .RB [ \-m
@@ -52,6 +52,9 @@ dmenu matches menu items case insensitively.
 .B \-n
 dmenu instantly selects if only one match.
 .TP
+.B \-P
+dmenu will not directly display the keyboard input, but instead replace it with dots. All data from stdin will be ignored.
+.TP
 .BI \-l " lines"
 dmenu lists items vertically, with the given number of lines.
 .TP
diff --git a/dmenu.c b/dmenu.c
index 4e5c109..02630e9 100644
--- a/dmenu.c
+++ b/dmenu.c
@@ -38,7 +38,7 @@ struct item {
 static char text[BUFSIZ] = "";
 static char *embed;
 static int bh, mw, mh;
-static int inputw = 0, promptw;
+static int inputw = 0, promptw, passwd = 0;
 static int lrpad; /* sum of left and right padding */
 static size_t cursor;
 static struct item *items = NULL;
@@ -146,6 +146,7 @@ drawmenu(void)
 	unsigned int curpos;
 	struct item *item;
 	int x = 0, y = 0, w;
+	char *censort;
 
 	drw_setscheme(drw, scheme[SchemeNorm]);
 	drw_rect(drw, 0, 0, mw, mh, 1, 1);
@@ -157,7 +158,12 @@ drawmenu(void)
 	/* draw input field */
 	w = (lines > 0 || !matches) ? mw - x : inputw;
 	drw_setscheme(drw, scheme[SchemeNorm]);
-	drw_text(drw, x, 0, w, bh, lrpad / 2, text, 0);
+	if (passwd) {
+	        censort = ecalloc(1, sizeof(text));
+		memset(censort, '*', strlen(text));
+		drw_text(drw, x, 0, w, bh, lrpad / 2, censort, 0);
+		free(censort);
+	} else drw_text(drw, x, 0, w, bh, lrpad / 2, text, 0);
 
 	curpos = TEXTW(text) - TEXTW(&text[cursor]);
 	if ((curpos += lrpad / 2 - 1) < w) {
@@ -567,6 +573,11 @@ readstdin(void)
 	char buf[sizeof text], *p;
 	size_t i, imax = 0, size = 0;
 	unsigned int tmpmax = 0;
+	if(passwd){
+    	inputw = lines = 0;
+    	return;
+  	}
+
 
 	/* read each line from stdin and add it to the item list */
 	for (i = 0; fgets(buf, sizeof buf, stdin); i++) {
@@ -732,7 +743,7 @@ setup(void)
 static void
 usage(void)
 {
-	fputs("usage: dmenu [-bfinv] [-l lines] [-p prompt] [-fn font] [-m monitor]\n"
+	fputs("usage: dmenu [-bfinvP] [-l lines] [-p prompt] [-fn font] [-m monitor]\n"
 	      "             [-nb color] [-nf color] [-sb color] [-sf color] [-w windowid] [-it text]\n", stderr);
 	exit(1);
 }
@@ -757,6 +768,8 @@ main(int argc, char *argv[])
 			fstrstr = cistrstr;
 		} else if (!strcmp(argv[i], "-n")) /* instant select only match */
 			instant = 1;
+		else if (!strcmp(argv[i], "-P"))   /* is the input a password */
+			passwd = 1;
 		else if (i + 1 == argc)
 			usage();
 		/* these options take one argument */
@@ -817,3 +830,4 @@ main(int argc, char *argv[])
 
 	return 1; /* unreachable */
 }
+