X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=libbb%2Fbb_askpass.c;h=cf384e52b9d1915b2f2275048c2b4443f898bfb5;hb=966ec7c067d7a2df5232a69c8d3d2e777347a62d;hp=65ddd5a24a2650847d2c12d181d0c1d39040e7a4;hpb=20f40000864609866b51624351581d067b18469c;p=oweals%2Fbusybox.git

diff --git a/libbb/bb_askpass.c b/libbb/bb_askpass.c
index 65ddd5a24..cf384e52b 100644
--- a/libbb/bb_askpass.c
+++ b/libbb/bb_askpass.c
@@ -17,8 +17,6 @@
 #include <sys/ioctl.h>
 
 #include "libbb.h"
-#define PWD_BUFFER_SIZE 256
-
 
 /* do nothing signal handler */
 static void askpass_timeout(int ATTRIBUTE_UNUSED ignore)
@@ -27,18 +25,17 @@ static void askpass_timeout(int ATTRIBUTE_UNUSED ignore)
 
 char *bb_askpass(int timeout, const char * prompt)
 {
+	static char passwd[64];
+
 	char *ret;
-	int i, size;
+	int i;
 	struct sigaction sa;
 	struct termios old, new;
-	static char passwd[PWD_BUFFER_SIZE];
 
 	tcgetattr(STDIN_FILENO, &old);
 	tcflush(STDIN_FILENO, TCIFLUSH);
 
-	size = sizeof(passwd);
-	ret = passwd;
-	memset(passwd, 0, size);
+	memset(passwd, 0, sizeof(passwd));
 
 	fputs(prompt, stdout);
 	fflush(stdout);
@@ -55,15 +52,16 @@ char *bb_askpass(int timeout, const char * prompt)
 		alarm(timeout);
 	}
 
-	if (read(STDIN_FILENO, passwd, size-1) <= 0) {
-		ret = NULL;
-	} else {
-		for(i = 0; i < size && passwd[i]; i++) {
-			if (passwd[i]== '\r' || passwd[i] == '\n') {
-				passwd[i]= 0;
-				break;
-			}
-		}
+	ret = NULL;
+	if (read(STDIN_FILENO, passwd, sizeof(passwd)-1) > 0) {
+		ret = passwd;
+		i = 0;
+		/* Last byte is guaranteed to be 0
+		   (read did not overwrite it) */
+		do {
+			if (passwd[i] == '\r' || passwd[i] == '\n')
+				passwd[i] = 0;
+		} while (passwd[i++]);
 	}
 
 	if (timeout) {
@@ -71,8 +69,7 @@ char *bb_askpass(int timeout, const char * prompt)
 	}
 
 	tcsetattr(STDIN_FILENO, TCSANOW, &old);
-	fputs("\n", stdout);
+	puts("");
 	fflush(stdout);
 	return ret;
 }
-