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

[Philip Kaludercic]

From: Philip K <philipp...@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
@@ -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;
@@ -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) {
@@ -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)
@@ -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);
 }
@@ -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