[hackers] [dmenu][PATCH] Don't display text directly when typing a password

From: Philip Kaludercic <philippija_AT_googlemail.com>
Date: Sat, 10 Jun 2017 18:29:49 +0200

From: Philip K <philippija_AT_gmail.com>

---
 dmenu.c | 19 +++++++++++++++----
 1 file changed, 15 insertions(+), 4 deletions(-)
diff --git a/dmenu.c b/dmenu.c
index d605ab4..4672f89 100644
--- a/dmenu.c
+++ b/dmenu.c
_AT_@ -36,7 +36,7 @@ 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;
_AT_@ -142,7 +142,11 @@ 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) {
+                char *ntext = calloc(1, sizeof(text));
+	        for (int i = 0; i < strlen(text); i++) ntext[i] = '.';
+		drw_text(drw, x, 0, w, bh, lrpad / 2, ntext, 0);
+	} else drw_text(drw, x, 0, w, bh, lrpad / 2, text, 0);
 
 	drw_font_getexts(drw->fonts, text, cursor, &curpos, NULL);
 	if ((curpos += lrpad / 2 - 1) < w) {
_AT_@ -481,6 +485,11 @@ readstdin(void)
 	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++) {
 		if (i + 1 >= size / sizeof *items)
_AT_@ -636,7 +645,7 @@ setup(void)
 static void
 usage(void)
 {
-	fputs("usage: dmenu [-bfiv] [-l lines] [-p prompt] [-fn font] [-m monitor]\n"
+	fputs("usage: dmenu [-bfiPv] [-l lines] [-p prompt] [-fn font] [-m monitor]\n"
 	      "             [-nb color] [-nf color] [-sb color] [-sf color] [-w windowid]\n", stderr);
 	exit(1);
 }
_AT_@ -659,7 +668,9 @@ main(int argc, char *argv[])
 		else if (!strcmp(argv[i], "-i")) { /* case-insensitive item matching */
 			fstrncmp = strncasecmp;
 			fstrstr = cistrstr;
-		} else if (i + 1 == argc)
+		} else if (!strcmp(argv[i], "-P"))   /* is the input a password */
+		        passwd = 1;
+		else if (i + 1 == argc)
 			usage();
 		/* these options take one argument */
 		else if (!strcmp(argv[i], "-l"))   /* number of lines in vertical list */
-- 
2.11.0

Received on Sat Jun 10 2017 - 18:29:49 CEST