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authorBen Lindstrom <mouring@eviladmin.org>2001-03-06 03:33:04 +0000
committerBen Lindstrom <mouring@eviladmin.org>2001-03-06 03:33:04 +0000
commit884a4aca88e98b4954a061847f91cad72c87053d (patch)
tree05fb9e3f9fe714681bf8adfeccf6728946305391 /ssh-keyscan.c
parentb3144e58e74ad9cc3c07da94264c3ccbfccb5cf7 (diff)
- millert@cvs.openbsd.org 2001/03/06 01:06:03
[ssh-keyscan.c] Don't assume we wil get the version string all in one read(). deraadt@ OK'd
Diffstat (limited to 'ssh-keyscan.c')
-rw-r--r--ssh-keyscan.c14
1 files changed, 9 insertions, 5 deletions
diff --git a/ssh-keyscan.c b/ssh-keyscan.c
index ab7f33d0..1b4f3a1b 100644
--- a/ssh-keyscan.c
+++ b/ssh-keyscan.c
@@ -8,7 +8,7 @@
*/
#include "includes.h"
-RCSID("$OpenBSD: ssh-keyscan.c,v 1.20 2001/03/05 15:37:27 deraadt Exp $");
+RCSID("$OpenBSD: ssh-keyscan.c,v 1.21 2001/03/06 01:06:03 millert Exp $");
#if defined(HAVE_SYS_QUEUE_H) && !defined(HAVE_BOGUS_SYS_QUEUE_H)
#include <sys/queue.h>
@@ -411,23 +411,27 @@ conrecycle(int s)
void
congreet(int s)
{
- char buf[80];
+ char buf[80], *cp;
+ size_t bufsiz;
int n;
con *c = &fdcon[s];
- n = read(s, buf, sizeof(buf));
+ bufsiz = sizeof(buf);
+ cp = buf;
+ while (bufsiz-- && (n = read(s, cp, 1)) == 1 && *cp != '\n' && *cp != '\r')
+ cp++;
if (n < 0) {
if (errno != ECONNREFUSED)
error("read (%s): %s", c->c_name, strerror(errno));
conrecycle(s);
return;
}
- if (buf[n - 1] != '\n') {
+ if (*cp != '\n' && *cp != '\r') {
error("%s: bad greeting", c->c_name);
confree(s);
return;
}
- buf[n - 1] = '\0';
+ *cp = '\0';
fprintf(stderr, "# %s %s\n", c->c_name, buf);
n = snprintf(buf, sizeof buf, "SSH-1.5-OpenSSH-keyscan\r\n");
if (atomicio(write, s, buf, n) != n) {