[hackers] [scroll] fix compare bug for scroll events || Jan Klemkow

[git]

commit 5cfe13ab217d60cbfcdb6d7f5e60f5c290e5e3d1
Author:     Jan Klemkow <j.klem...@wemelug.de>
AuthorDate: Sat Apr 4 22:45:58 2020 +0200
Commit:     Jan Klemkow <j.klem...@wemelug.de>
CommitDate: Sat Apr 4 22:49:00 2020 +0200

    fix compare bug for scroll events

diff --git a/scroll.c b/scroll.c
index 4cb6102..f392fb9 100644
--- a/scroll.c
+++ b/scroll.c
@@ -385,18 +385,19 @@ main(int argc, char *argv[])
                        die("poll:");
 
                if (pfd[0].revents & POLLIN) {
-                       ssize_t n = read(STDIN_FILENO, input, sizeof input);
+                       ssize_t n = read(STDIN_FILENO, input, sizeof(input)-1);
 
                        if (n <= 0 && errno != EINTR)
                                die("read:");
 
-                       if (!altscreen && strncmp(KB_SCROLL_UP, input, n) == 0)
+                       input[n] = '\0';
+                       if (!altscreen && strcmp(KB_SCROLL_UP, input) == 0)
                                scrollup(ws.ws_row);
-                       else if (!altscreen && strncmp(MS_SCROLL_UP, input, n) 
== 0)
+                       else if (!altscreen && strcmp(MS_SCROLL_UP, input) == 0)
                                scrollup(1);
-                       else if (!altscreen && strncmp(KB_SCROLL_DOWN, input, 
n) == 0)
+                       else if (!altscreen && strcmp(KB_SCROLL_DOWN, input) == 
0)
                                scrolldown(buf, pos, ws.ws_row);
-                       else if (!altscreen && strncmp(MS_SCROLL_DOWN, input, 
n) == 0)
+                       else if (!altscreen && strcmp(MS_SCROLL_DOWN, input) == 
0)
                                scrolldown(buf, pos, 1);
                        else if (write(mfd, input, n) == -1)
                                die("write:");