* New upstream release (http://www.openssh.org/txt/release-5.7):

  - Implement Elliptic Curve Cryptography modes for key exchange (ECDH)
    and host/user keys (ECDSA) as specified by RFC5656.  ECDH and ECDSA
    offer better performance than plain DH and DSA at the same equivalent
    symmetric key length, as well as much shorter keys.
  - sftp(1)/sftp-server(8): add a protocol extension to support a hard
    link operation.  It is available through the "ln" command in the
    client.  The old "ln" behaviour of creating a symlink is available
    using its "-s" option or through the preexisting "symlink" command.
  - scp(1): Add a new -3 option to scp: Copies between two remote hosts
    are transferred through the local host (closes: #508613).
  - ssh(1): "atomically" create the listening mux socket by binding it on
    a temporary name and then linking it into position after listen() has
    succeeded.  This allows the mux clients to determine that the server
    socket is either ready or stale without races (closes: #454784).
    Stale server sockets are now automatically removed (closes: #523250).
  - ssh(1): install a SIGCHLD handler to reap expired child process
    (closes: #594687).
  - ssh(1)/ssh-agent(1): honour $TMPDIR for client xauth and ssh-agent
    temporary directories (closes: #357469, although only if you arrange
    for ssh-agent to actually see $TMPDIR since the setgid bit will cause
    it to be stripped off).

1 files changed, 132 insertions, 7 deletions

diff --git a/misc.c b/misc.c
index 20d4300d9..ea614ce22 100644
--- a/misc.c
+++ b/misc.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: misc.c,v 1.80 2010/07/21 02:10:58 djm Exp $ */
+/* $OpenBSD: misc.c,v 1.84 2010/11/21 01:01:13 djm Exp $ */
 /*
  * Copyright (c) 2000 Markus Friedl.  All rights reserved.
  * Copyright (c) 2005,2006 Damien Miller.  All rights reserved.
@@ -35,9 +35,12 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <time.h>
 #include <unistd.h>
 
 #include <netinet/in.h>
+#include <netinet/in_systm.h>
+#include <netinet/ip.h>
 #include <netinet/tcp.h>
 
 #include <errno.h>
@@ -900,16 +903,138 @@ ms_to_timeval(struct timeval *tv, int ms)
         tv->tv_usec = (ms % 1000) * 1000;
 }
 
+void
+bandwidth_limit_init(struct bwlimit *bw, u_int64_t kbps, size_t buflen)
+{
+        bw->buflen = buflen;
+        bw->rate = kbps;
+        bw->thresh = bw->rate;
+        bw->lamt = 0;
+        timerclear(&bw->bwstart);
+        timerclear(&bw->bwend);
+}       
+
+/* Callback from read/write loop to insert bandwidth-limiting delays */
+void
+bandwidth_limit(struct bwlimit *bw, size_t read_len)
+{
+        u_int64_t waitlen;
+        struct timespec ts, rm;
+
+        if (!timerisset(&bw->bwstart)) {
+                gettimeofday(&bw->bwstart, NULL);
+                return;
+        }
+
+        bw->lamt += read_len;
+        if (bw->lamt < bw->thresh)
+                return;
+
+        gettimeofday(&bw->bwend, NULL);
+        timersub(&bw->bwend, &bw->bwstart, &bw->bwend);
+        if (!timerisset(&bw->bwend))
+                return;
+
+        bw->lamt *= 8;
+        waitlen = (double)1000000L * bw->lamt / bw->rate;
+
+        bw->bwstart.tv_sec = waitlen / 1000000L;
+        bw->bwstart.tv_usec = waitlen % 1000000L;
+
+        if (timercmp(&bw->bwstart, &bw->bwend, >)) {
+                timersub(&bw->bwstart, &bw->bwend, &bw->bwend);
+
+                /* Adjust the wait time */
+                if (bw->bwend.tv_sec) {
+                        bw->thresh /= 2;
+                        if (bw->thresh < bw->buflen / 4)
+                                bw->thresh = bw->buflen / 4;
+                } else if (bw->bwend.tv_usec < 10000) {
+                        bw->thresh *= 2;
+                        if (bw->thresh > bw->buflen * 8)
+                                bw->thresh = bw->buflen * 8;
+                }
+
+                TIMEVAL_TO_TIMESPEC(&bw->bwend, &ts);
+                while (nanosleep(&ts, &rm) == -1) {
+                        if (errno != EINTR)
+                                break;
+                        ts = rm;
+                }
+        }
+
+        bw->lamt = 0;
+        gettimeofday(&bw->bwstart, NULL);
+}
+
+/* Make a template filename for mk[sd]temp() */
+void
+mktemp_proto(char *s, size_t len)
+{
+        const char *tmpdir;
+        int r;
+
+        if ((tmpdir = getenv("TMPDIR")) != NULL) {
+                r = snprintf(s, len, "%s/ssh-XXXXXXXXXXXX", tmpdir);
+                if (r > 0 && (size_t)r < len)
+                        return;
+        }
+        r = snprintf(s, len, "/tmp/ssh-XXXXXXXXXXXX");
+        if (r < 0 || (size_t)r >= len)
+                fatal("%s: template string too short", __func__);
+}
+
+static const struct {
+        const char *name;
+        int value;
+} ipqos[] = {
+        { "af11", IPTOS_DSCP_AF11 },
+        { "af12", IPTOS_DSCP_AF12 },
+        { "af13", IPTOS_DSCP_AF13 },
+        { "af14", IPTOS_DSCP_AF21 },
+        { "af22", IPTOS_DSCP_AF22 },
+        { "af23", IPTOS_DSCP_AF23 },
+        { "af31", IPTOS_DSCP_AF31 },
+        { "af32", IPTOS_DSCP_AF32 },
+        { "af33", IPTOS_DSCP_AF33 },
+        { "af41", IPTOS_DSCP_AF41 },
+        { "af42", IPTOS_DSCP_AF42 },
+        { "af43", IPTOS_DSCP_AF43 },
+        { "cs0", IPTOS_DSCP_CS0 },
+        { "cs1", IPTOS_DSCP_CS1 },
+        { "cs2", IPTOS_DSCP_CS2 },
+        { "cs3", IPTOS_DSCP_CS3 },
+        { "cs4", IPTOS_DSCP_CS4 },
+        { "cs5", IPTOS_DSCP_CS5 },
+        { "cs6", IPTOS_DSCP_CS6 },
+        { "cs7", IPTOS_DSCP_CS7 },
+        { "ef", IPTOS_DSCP_EF },
+        { "lowdelay", IPTOS_LOWDELAY },
+        { "throughput", IPTOS_THROUGHPUT },
+        { "reliability", IPTOS_RELIABILITY },
+        { NULL, -1 }
+};
+
 int
-timingsafe_bcmp(const void *b1, const void *b2, size_t n)
+parse_ipqos(const char *cp)
 {
-        const unsigned char *p1 = b1, *p2 = b2;
-        int ret = 0;
+        u_int i;
+        char *ep;
+        long val;
 
-        for (; n > 0; n--)
-                ret |= *p1++ ^ *p2++;
-        return (ret != 0);
+        if (cp == NULL)
+                return -1;
+        for (i = 0; ipqos[i].name != NULL; i++) {
+                if (strcasecmp(cp, ipqos[i].name) == 0)
+                        return ipqos[i].value;
+        }
+        /* Try parsing as an integer */
+        val = strtol(cp, &ep, 0);
+        if (*cp == '\0' || *ep != '\0' || val < 0 || val > 255)
+                return -1;
+        return val;
 }
+
 void
 sock_set_v6only(int s)
 {