#define SSH1_SMSG_AUTH_CCARD_CHALLENGE 71 /* 0x47 */
#define SSH1_CMSG_AUTH_CCARD_RESPONSE 72 /* 0x48 */
+#define SSH1_AUTH_RHOSTS 1 /* 0x1 */
+#define SSH1_AUTH_RSA 2 /* 0x2 */
+#define SSH1_AUTH_PASSWORD 3 /* 0x3 */
+#define SSH1_AUTH_RHOSTS_RSA 4 /* 0x4 */
#define SSH1_AUTH_TIS 5 /* 0x5 */
#define SSH1_AUTH_CCARD 16 /* 0x10 */
* Packet type contexts, so that ssh2_pkt_type can correctly decode
* the ambiguous type numbers back into the correct type strings.
*/
-#define SSH2_PKTCTX_DHGROUP 0x0001
-#define SSH2_PKTCTX_DHGEX 0x0002
-#define SSH2_PKTCTX_RSAKEX 0x0004
-#define SSH2_PKTCTX_KEX_MASK 0x000F
-#define SSH2_PKTCTX_PUBLICKEY 0x0010
-#define SSH2_PKTCTX_PASSWORD 0x0020
-#define SSH2_PKTCTX_KBDINTER 0x0040
-#define SSH2_PKTCTX_AUTH_MASK 0x00F0
+typedef enum {
+ SSH2_PKTCTX_NOKEX,
+ SSH2_PKTCTX_DHGROUP,
+ SSH2_PKTCTX_DHGEX,
+ SSH2_PKTCTX_RSAKEX
+} Pkt_KCtx;
+typedef enum {
+ SSH2_PKTCTX_NOAUTH,
+ SSH2_PKTCTX_PUBLICKEY,
+ SSH2_PKTCTX_PASSWORD,
+ SSH2_PKTCTX_KBDINTER
+} Pkt_ACtx;
#define SSH2_DISCONNECT_HOST_NOT_ALLOWED_TO_CONNECT 1 /* 0x1 */
#define SSH2_DISCONNECT_PROTOCOL_ERROR 2 /* 0x2 */
/*
* Codes for terminal modes.
* Most of these are the same in SSH-1 and SSH-2.
- * This list is derived from draft-ietf-secsh-connect-25 and
+ * This list is derived from RFC 4254 and
* SSH-1 RFC-1.2.31.
*/
static const struct {
}
#define translate(x) if (type == x) return #x
-#define translatec(x,ctx) if (type == x && (pkt_ctx & ctx)) return #x
+#define translatek(x,ctx) if (type == x && (pkt_kctx == ctx)) return #x
+#define translatea(x,ctx) if (type == x && (pkt_actx == ctx)) return #x
static char *ssh1_pkt_type(int type)
{
translate(SSH1_MSG_DISCONNECT);
translate(SSH1_CMSG_AUTH_CCARD_RESPONSE);
return "unknown";
}
-static char *ssh2_pkt_type(int pkt_ctx, int type)
+static char *ssh2_pkt_type(Pkt_KCtx pkt_kctx, Pkt_ACtx pkt_actx, int type)
{
translate(SSH2_MSG_DISCONNECT);
translate(SSH2_MSG_IGNORE);
translate(SSH2_MSG_SERVICE_ACCEPT);
translate(SSH2_MSG_KEXINIT);
translate(SSH2_MSG_NEWKEYS);
- translatec(SSH2_MSG_KEXDH_INIT, SSH2_PKTCTX_DHGROUP);
- translatec(SSH2_MSG_KEXDH_REPLY, SSH2_PKTCTX_DHGROUP);
- translatec(SSH2_MSG_KEX_DH_GEX_REQUEST, SSH2_PKTCTX_DHGEX);
- translatec(SSH2_MSG_KEX_DH_GEX_GROUP, SSH2_PKTCTX_DHGEX);
- translatec(SSH2_MSG_KEX_DH_GEX_INIT, SSH2_PKTCTX_DHGEX);
- translatec(SSH2_MSG_KEX_DH_GEX_REPLY, SSH2_PKTCTX_DHGEX);
- translatec(SSH2_MSG_KEXRSA_PUBKEY, SSH2_PKTCTX_RSAKEX);
- translatec(SSH2_MSG_KEXRSA_SECRET, SSH2_PKTCTX_RSAKEX);
- translatec(SSH2_MSG_KEXRSA_DONE, SSH2_PKTCTX_RSAKEX);
+ translatek(SSH2_MSG_KEXDH_INIT, SSH2_PKTCTX_DHGROUP);
+ translatek(SSH2_MSG_KEXDH_REPLY, SSH2_PKTCTX_DHGROUP);
+ translatek(SSH2_MSG_KEX_DH_GEX_REQUEST, SSH2_PKTCTX_DHGEX);
+ translatek(SSH2_MSG_KEX_DH_GEX_GROUP, SSH2_PKTCTX_DHGEX);
+ translatek(SSH2_MSG_KEX_DH_GEX_INIT, SSH2_PKTCTX_DHGEX);
+ translatek(SSH2_MSG_KEX_DH_GEX_REPLY, SSH2_PKTCTX_DHGEX);
+ translatek(SSH2_MSG_KEXRSA_PUBKEY, SSH2_PKTCTX_RSAKEX);
+ translatek(SSH2_MSG_KEXRSA_SECRET, SSH2_PKTCTX_RSAKEX);
+ translatek(SSH2_MSG_KEXRSA_DONE, SSH2_PKTCTX_RSAKEX);
translate(SSH2_MSG_USERAUTH_REQUEST);
translate(SSH2_MSG_USERAUTH_FAILURE);
translate(SSH2_MSG_USERAUTH_SUCCESS);
translate(SSH2_MSG_USERAUTH_BANNER);
- translatec(SSH2_MSG_USERAUTH_PK_OK, SSH2_PKTCTX_PUBLICKEY);
- translatec(SSH2_MSG_USERAUTH_PASSWD_CHANGEREQ, SSH2_PKTCTX_PASSWORD);
- translatec(SSH2_MSG_USERAUTH_INFO_REQUEST, SSH2_PKTCTX_KBDINTER);
- translatec(SSH2_MSG_USERAUTH_INFO_RESPONSE, SSH2_PKTCTX_KBDINTER);
+ translatea(SSH2_MSG_USERAUTH_PK_OK, SSH2_PKTCTX_PUBLICKEY);
+ translatea(SSH2_MSG_USERAUTH_PASSWD_CHANGEREQ, SSH2_PKTCTX_PASSWORD);
+ translatea(SSH2_MSG_USERAUTH_INFO_REQUEST, SSH2_PKTCTX_KBDINTER);
+ translatea(SSH2_MSG_USERAUTH_INFO_RESPONSE, SSH2_PKTCTX_KBDINTER);
translate(SSH2_MSG_GLOBAL_REQUEST);
translate(SSH2_MSG_REQUEST_SUCCESS);
translate(SSH2_MSG_REQUEST_FAILURE);
*
* - OUR_V2_WINSIZE is the maximum window size we present on SSH-2
* channels.
+ *
+ * - OUR_V2_BIGWIN is the window size we advertise for the only
+ * channel in a simple connection. It must be <= INT_MAX.
*/
#define SSH1_BUFFER_LIMIT 32768
#define SSH_MAX_BACKLOG 32768
#define OUR_V2_WINSIZE 16384
+#define OUR_V2_BIGWIN 0x7fffffff
#define OUR_V2_MAXPKT 0x4000UL
/* Maximum length of passwords/passphrases (arbitrary) */
};
/*
+ * little structure to keep track of outstanding WINDOW_ADJUSTs
+ */
+struct winadj {
+ struct winadj *next;
+ unsigned size;
+};
+
+/*
* 2-3-4 tree storing channels.
*/
struct ssh_channel {
struct ssh2_data_channel {
bufchain outbuffer;
unsigned remwindow, remmaxpkt;
- unsigned locwindow;
+ /* locwindow is signed so we can cope with excess data. */
+ int locwindow, locmaxwin;
+ /*
+ * remlocwin is the amount of local window that we think
+ * the remote end had available to it after it sent the
+ * last data packet or window adjust ack.
+ */
+ int remlocwin;
+ /*
+ * These store the list of window adjusts that haven't
+ * been acked.
+ */
+ struct winadj *winadj_head, *winadj_tail;
+ enum { THROTTLED, UNTHROTTLING, UNTHROTTLED } throttle_state;
} v2;
} v;
union {
static int ssh2_try_send(struct ssh_channel *c);
static void ssh2_add_channel_data(struct ssh_channel *c, char *buf, int len);
static void ssh_throttle_all(Ssh ssh, int enable, int bufsize);
-static void ssh2_set_window(struct ssh_channel *c, unsigned newwin);
+static void ssh2_set_window(struct ssh_channel *c, int newwin);
static int ssh_sendbuffer(void *handle);
static int ssh_do_close(Ssh ssh, int notify_exit);
static unsigned long ssh_pkt_getuint32(struct Packet *pkt);
bufchain banner; /* accumulates banners during do_ssh2_authconn */
- int pkt_ctx;
+ Pkt_KCtx pkt_kctx;
+ Pkt_ACtx pkt_actx;
void *x11auth;
/* "Session data" packets - omit the data field */
if ((st->pktin->type == SSH1_SMSG_STDOUT_DATA) ||
(st->pktin->type == SSH1_SMSG_STDERR_DATA)) {
- do_blank = TRUE; blank_prefix = 0;
- } else if (st->pktin->type == SSH1_MSG_CHANNEL_DATA) {
do_blank = TRUE; blank_prefix = 4;
+ } else if (st->pktin->type == SSH1_MSG_CHANNEL_DATA) {
+ do_blank = TRUE; blank_prefix = 8;
}
if (do_blank) {
blank.offset = blank_prefix;
int do_blank = FALSE, blank_prefix = 0;
/* "Session data" packets - omit the data field */
if (st->pktin->type == SSH2_MSG_CHANNEL_DATA) {
- do_blank = TRUE; blank_prefix = 4;
- } else if (st->pktin->type == SSH2_MSG_CHANNEL_EXTENDED_DATA) {
do_blank = TRUE; blank_prefix = 8;
+ } else if (st->pktin->type == SSH2_MSG_CHANNEL_EXTENDED_DATA) {
+ do_blank = TRUE; blank_prefix = 12;
}
if (do_blank) {
blank.offset = blank_prefix;
}
}
log_packet(ssh->logctx, PKT_INCOMING, st->pktin->type,
- ssh2_pkt_type(ssh->pkt_ctx, st->pktin->type),
+ ssh2_pkt_type(ssh->pkt_kctx, ssh->pkt_actx,
+ st->pktin->type),
st->pktin->data+6, st->pktin->length-6,
nblanks, &blank);
}
static int s_write(Ssh ssh, void *data, int len)
{
- log_packet(ssh->logctx, PKT_OUTGOING, -1, NULL, data, len, 0, NULL);
+ if (ssh->logctx)
+ log_packet(ssh->logctx, PKT_OUTGOING, -1, NULL, data, len, 0, NULL);
return sk_write(ssh->s, (char *)data, len);
}
if (ssh->logctx)
log_packet(ssh->logctx, PKT_OUTGOING, pkt->data[5],
- ssh2_pkt_type(ssh->pkt_ctx, pkt->data[5]),
+ ssh2_pkt_type(ssh->pkt_kctx, ssh->pkt_actx, pkt->data[5]),
pkt->body, pkt->length - (pkt->body - pkt->data),
pkt->nblanks, pkt->blanks);
sfree(pkt->blanks); pkt->blanks = NULL;
crBegin(ssh->do_ssh_init_crstate);
- /*
- * If the SSH version number's fixed, set it now, and if it's SSH-2,
- * send the version string too.
- *
- * XXX This isn't actually early enough to be useful, since we only
- * get here when the first incoming byte turns up.
- */
- if (ssh->cfg.sshprot == 0)
- ssh->version = 1;
- if (ssh->cfg.sshprot == 3) {
- ssh->version = 2;
- ssh_send_verstring(ssh, NULL);
- }
-
/* Search for a line beginning with the string "SSH-" in the input. */
for (;;) {
if (c != 'S') goto no;
static void ssh_gotdata(Ssh ssh, unsigned char *data, int datalen)
{
/* Log raw data, if we're in that mode. */
- log_packet(ssh->logctx, PKT_INCOMING, -1, NULL, data, datalen, 0, NULL);
+ if (ssh->logctx)
+ log_packet(ssh->logctx, PKT_INCOMING, -1, NULL, data, datalen,
+ 0, NULL);
crBegin(ssh->ssh_gotdata_crstate);
return err;
}
+ /*
+ * If the SSH version number's fixed, set it now, and if it's SSH-2,
+ * send the version string too.
+ */
+ if (ssh->cfg.sshprot == 0)
+ ssh->version = 1;
+ if (ssh->cfg.sshprot == 3) {
+ ssh->version = 2;
+ ssh_send_verstring(ssh, NULL);
+ }
+
return NULL;
}
} else {
send_packet(ssh, SSH1_MSG_CHANNEL_DATA,
PKT_INT, c->remoteid,
- PKTT_DATA,
PKT_INT, replylen,
+ PKTT_DATA,
PKT_DATA, sentreply, replylen,
PKTT_OTHER,
PKT_END);
ssh->v1_remote_protoflags = ssh_pkt_getuint32(pktin);
s->supported_ciphers_mask = ssh_pkt_getuint32(pktin);
s->supported_auths_mask = ssh_pkt_getuint32(pktin);
+ if ((ssh->remote_bugs & BUG_CHOKES_ON_RSA))
+ s->supported_auths_mask &= ~(1 << SSH1_AUTH_RSA);
ssh->v1_local_protoflags =
ssh->v1_remote_protoflags & SSH1_PROTOFLAGS_SUPPORTED;
crWaitUntil(pktin);
- if ((ssh->remote_bugs & BUG_CHOKES_ON_RSA)) {
+ if ((s->supported_auths_mask & (1 << SSH1_AUTH_RSA)) == 0) {
/* We must not attempt PK auth. Pretend we've already tried it. */
s->tried_publickey = s->tried_agent = 1;
} else {
}
}
if (s->pwpkt_type == SSH1_CMSG_AUTH_PASSWORD) {
+ if ((s->supported_auths_mask & (1 << SSH1_AUTH_PASSWORD)) == 0) {
+ bombout(("No supported authentication methods available"));
+ crStop(0);
+ }
s->cur_prompt->to_server = TRUE;
s->cur_prompt->name = dupstr("SSH password");
add_prompt(s->cur_prompt, dupprintf("%.90s@%.90s's password: ",
if (ssh->version == 1) {
send_packet(ssh, SSH1_MSG_CHANNEL_DATA,
PKT_INT, c->remoteid,
- PKTT_DATA,
- PKT_INT, len, PKT_DATA, buf, len,
+ PKT_INT, len, PKTT_DATA, PKT_DATA, buf, len,
PKTT_OTHER, PKT_END);
/*
* In SSH-1 we can return 0 here - implying that forwarded
ssh1_throttle(ssh, -1);
}
} else {
- ssh2_set_window(c, OUR_V2_WINSIZE - bufsize);
+ ssh2_set_window(c, c->v.v2.locmaxwin - bufsize);
}
}
} else {
while (inlen > 0) {
int len = min(inlen, 512);
- send_packet(ssh, SSH1_CMSG_STDIN_DATA, PKTT_DATA,
- PKT_INT, len, PKT_DATA, in, len,
+ send_packet(ssh, SSH1_CMSG_STDIN_DATA,
+ PKT_INT, len, PKTT_DATA, PKT_DATA, in, len,
PKTT_OTHER, PKT_END);
in += len;
inlen -= len;
s->maclist = macs, s->nmacs = lenof(macs);
begin_key_exchange:
- ssh->pkt_ctx &= ~SSH2_PKTCTX_KEX_MASK;
+ ssh->pkt_kctx = SSH2_PKTCTX_NOKEX;
{
int i, j, commalist_started;
*/
if (!ssh->kex->pdata) {
logevent("Doing Diffie-Hellman group exchange");
- ssh->pkt_ctx |= SSH2_PKTCTX_DHGEX;
+ ssh->pkt_kctx = SSH2_PKTCTX_DHGEX;
/*
* Work out how big a DH group we will need to allow that
* much data.
s->kex_init_value = SSH2_MSG_KEX_DH_GEX_INIT;
s->kex_reply_value = SSH2_MSG_KEX_DH_GEX_REPLY;
} else {
- ssh->pkt_ctx |= SSH2_PKTCTX_DHGROUP;
+ ssh->pkt_kctx = SSH2_PKTCTX_DHGROUP;
ssh->kex_ctx = dh_setup_group(ssh->kex);
s->kex_init_value = SSH2_MSG_KEXDH_INIT;
s->kex_reply_value = SSH2_MSG_KEXDH_REPLY;
} else {
logeventf(ssh, "Doing RSA key exchange with hash %s",
ssh->kex->hash->text_name);
- ssh->pkt_ctx |= SSH2_PKTCTX_RSAKEX;
+ ssh->pkt_kctx = SSH2_PKTCTX_RSAKEX;
/*
* RSA key exchange. First expect a KEXRSA_PUBKEY packet
* from the server.
len = c->v.v2.remmaxpkt;
pktout = ssh2_pkt_init(SSH2_MSG_CHANNEL_DATA);
ssh2_pkt_adduint32(pktout, c->remoteid);
- dont_log_data(ssh, pktout, PKTLOG_OMIT);
ssh2_pkt_addstring_start(pktout);
+ dont_log_data(ssh, pktout, PKTLOG_OMIT);
ssh2_pkt_addstring_data(pktout, data, len);
end_log_omission(ssh, pktout);
ssh2_pkt_send(ssh, pktout);
/*
* Potentially enlarge the window on an SSH-2 channel.
*/
-static void ssh2_set_window(struct ssh_channel *c, unsigned newwin)
+static void ssh2_set_window(struct ssh_channel *c, int newwin)
{
Ssh ssh = c->ssh;
*
* "Significant" is arbitrarily defined as half the window size.
*/
- if (newwin > c->v.v2.locwindow * 2) {
+ if (newwin / 2 >= c->v.v2.locwindow) {
struct Packet *pktout;
+ struct winadj *wa;
+ /*
+ * In order to keep track of how much window the client
+ * actually has available, we'd like it to acknowledge each
+ * WINDOW_ADJUST. We can't do that directly, so we accompany
+ * it with a CHANNEL_REQUEST that has to be acknowledged.
+ *
+ * This is only necessary if we're opening the window wide.
+ * If we're not, then throughput is being constrained by
+ * something other than the maximum window size anyway.
+ *
+ * We also only send this if the main channel has finished its
+ * initial CHANNEL_REQUESTs and installed the default
+ * CHANNEL_FAILURE handler, so as not to risk giving it
+ * unexpected CHANNEL_FAILUREs.
+ */
+ if (newwin == c->v.v2.locmaxwin &&
+ ssh->packet_dispatch[SSH2_MSG_CHANNEL_FAILURE]) {
+ pktout = ssh2_pkt_init(SSH2_MSG_CHANNEL_REQUEST);
+ ssh2_pkt_adduint32(pktout, c->remoteid);
+ ssh2_pkt_addstring(pktout, "winadj@putty.projects.tartarus.org");
+ ssh2_pkt_addbool(pktout, TRUE);
+ ssh2_pkt_send(ssh, pktout);
+
+ /*
+ * CHANNEL_FAILURE doesn't come with any indication of
+ * what message caused it, so we have to keep track of the
+ * outstanding CHANNEL_REQUESTs ourselves.
+ */
+ wa = snew(struct winadj);
+ wa->size = newwin - c->v.v2.locwindow;
+ wa->next = NULL;
+ if (!c->v.v2.winadj_head)
+ c->v.v2.winadj_head = wa;
+ else
+ c->v.v2.winadj_tail->next = wa;
+ c->v.v2.winadj_tail = wa;
+ if (c->v.v2.throttle_state != UNTHROTTLED)
+ c->v.v2.throttle_state = UNTHROTTLING;
+ } else {
+ /* Pretend the WINDOW_ADJUST was acked immediately. */
+ c->v.v2.remlocwin = newwin;
+ c->v.v2.throttle_state = THROTTLED;
+ }
pktout = ssh2_pkt_init(SSH2_MSG_CHANNEL_WINDOW_ADJUST);
ssh2_pkt_adduint32(pktout, c->remoteid);
ssh2_pkt_adduint32(pktout, newwin - c->v.v2.locwindow);
}
}
+static void ssh2_msg_channel_failure(Ssh ssh, struct Packet *pktin)
+{
+ /*
+ * The only time this should get called is for "winadj@putty"
+ * messages sent above. All other channel requests are either
+ * sent with want_reply false or are sent before this handler gets
+ * installed.
+ */
+ unsigned i = ssh_pkt_getuint32(pktin);
+ struct ssh_channel *c;
+ struct winadj *wa;
+
+ c = find234(ssh->channels, &i, ssh_channelfind);
+ if (!c)
+ return; /* nonexistent channel */
+ wa = c->v.v2.winadj_head;
+ if (!wa)
+ logevent("excess SSH_MSG_CHANNEL_FAILURE");
+ else {
+ c->v.v2.winadj_head = wa->next;
+ c->v.v2.remlocwin += wa->size;
+ sfree(wa);
+ /*
+ * winadj messages are only sent when the window is fully open,
+ * so if we get an ack of one, we know any pending unthrottle
+ * is complete.
+ */
+ if (c->v.v2.throttle_state == UNTHROTTLING)
+ c->v.v2.throttle_state = UNTHROTTLED;
+ }
+}
+
static void ssh2_msg_channel_window_adjust(Ssh ssh, struct Packet *pktin)
{
unsigned i = ssh_pkt_getuint32(pktin);
if (data) {
int bufsize = 0;
c->v.v2.locwindow -= length;
+ c->v.v2.remlocwin -= length;
switch (c->type) {
case CHAN_MAINSESSION:
bufsize =
break;
}
/*
+ * If it looks like the remote end hit the end of its window,
+ * and we didn't want it to do that, think about using a
+ * larger window.
+ */
+ if (c->v.v2.remlocwin <= 0 && c->v.v2.throttle_state == UNTHROTTLED &&
+ c->v.v2.locmaxwin < 0x40000000)
+ c->v.v2.locmaxwin += OUR_V2_WINSIZE;
+ /*
* If we are not buffering too much data,
* enlarge the window again at the remote side.
+ * If we are buffering too much, we may still
+ * need to adjust the window if the server's
+ * sent excess data.
*/
- if (bufsize < OUR_V2_WINSIZE)
- ssh2_set_window(c, OUR_V2_WINSIZE - bufsize);
+ ssh2_set_window(c, bufsize < c->v.v2.locmaxwin ?
+ c->v.v2.locmaxwin - bufsize : 0);
}
}
} else {
c->localid = alloc_channel_id(ssh);
c->closes = 0;
- c->v.v2.locwindow = OUR_V2_WINSIZE;
+ c->v.v2.locwindow = c->v.v2.locmaxwin = OUR_V2_WINSIZE;
c->v.v2.remwindow = winsize;
c->v.v2.remmaxpkt = pktsize;
+ c->v.v2.remlocwin = OUR_V2_WINSIZE;
+ c->v.v2.winadj_head = c->v.v2.winadj_tail = NULL;
+ c->v.v2.throttle_state = UNTHROTTLED;
bufchain_init(&c->v.v2.outbuffer);
add234(ssh->channels, c);
pktout = ssh2_pkt_init(SSH2_MSG_CHANNEL_OPEN_CONFIRMATION);
* just in case it succeeds, and (b) so that we know what
* authentication methods we can usefully try next.
*/
- ssh->pkt_ctx &= ~SSH2_PKTCTX_AUTH_MASK;
+ ssh->pkt_actx = SSH2_PKTCTX_NOAUTH;
s->pktout = ssh2_pkt_init(SSH2_MSG_USERAUTH_REQUEST);
ssh2_pkt_addstring(s->pktout, s->username);
in_commasep_string("keyboard-interactive", methods, methlen);
}
- ssh->pkt_ctx &= ~SSH2_PKTCTX_AUTH_MASK;
+ ssh->pkt_actx = SSH2_PKTCTX_NOAUTH;
if (s->can_pubkey && !s->done_agent && s->nkeys) {
* Attempt public-key authentication using a key from Pageant.
*/
- ssh->pkt_ctx &= ~SSH2_PKTCTX_AUTH_MASK;
- ssh->pkt_ctx |= SSH2_PKTCTX_PUBLICKEY;
+ ssh->pkt_actx = SSH2_PKTCTX_PUBLICKEY;
logeventf(ssh, "Trying Pageant key #%d", s->keyi);
struct ssh2_userkey *key; /* not live over crReturn */
char *passphrase; /* not live over crReturn */
- ssh->pkt_ctx &= ~SSH2_PKTCTX_AUTH_MASK;
- ssh->pkt_ctx |= SSH2_PKTCTX_PUBLICKEY;
+ ssh->pkt_actx = SSH2_PKTCTX_PUBLICKEY;
s->tried_pubkey_config = TRUE;
s->type = AUTH_TYPE_KEYBOARD_INTERACTIVE;
- ssh->pkt_ctx &= ~SSH2_PKTCTX_AUTH_MASK;
- ssh->pkt_ctx |= SSH2_PKTCTX_KBDINTER;
+ ssh->pkt_actx = SSH2_PKTCTX_KBDINTER;
s->pktout = ssh2_pkt_init(SSH2_MSG_USERAUTH_REQUEST);
ssh2_pkt_addstring(s->pktout, s->username);
int ret; /* not live over crReturn */
int changereq_first_time; /* not live over crReturn */
- ssh->pkt_ctx &= ~SSH2_PKTCTX_AUTH_MASK;
- ssh->pkt_ctx |= SSH2_PKTCTX_PASSWORD;
+ ssh->pkt_actx = SSH2_PKTCTX_PASSWORD;
s->cur_prompt = new_prompts(ssh->frontend);
s->cur_prompt->to_server = TRUE;
s->pktout = ssh2_pkt_init(SSH2_MSG_CHANNEL_OPEN);
ssh2_pkt_addstring(s->pktout, "direct-tcpip");
ssh2_pkt_adduint32(s->pktout, ssh->mainchan->localid);
- ssh->mainchan->v.v2.locwindow = OUR_V2_WINSIZE;
+ ssh->mainchan->v.v2.locwindow = ssh->mainchan->v.v2.locmaxwin =
+ ssh->mainchan->v.v2.remlocwin =
+ ssh->cfg.ssh_simple ? OUR_V2_BIGWIN : OUR_V2_WINSIZE;
+ ssh->mainchan->v.v2.winadj_head = NULL;
+ ssh->mainchan->v.v2.winadj_tail = NULL;
+ ssh->mainchan->v.v2.throttle_state = UNTHROTTLED;
ssh2_pkt_adduint32(s->pktout, ssh->mainchan->v.v2.locwindow);/* our window size */
ssh2_pkt_adduint32(s->pktout, OUR_V2_MAXPKT); /* our max pkt size */
ssh2_pkt_addstring(s->pktout, ssh->cfg.ssh_nc_host);
s->pktout = ssh2_pkt_init(SSH2_MSG_CHANNEL_OPEN);
ssh2_pkt_addstring(s->pktout, "session");
ssh2_pkt_adduint32(s->pktout, ssh->mainchan->localid);
- ssh->mainchan->v.v2.locwindow = OUR_V2_WINSIZE;
+ ssh->mainchan->v.v2.locwindow = ssh->mainchan->v.v2.locmaxwin =
+ ssh->mainchan->v.v2.remlocwin =
+ ssh->cfg.ssh_simple ? OUR_V2_BIGWIN : OUR_V2_WINSIZE;
+ ssh->mainchan->v.v2.winadj_head = NULL;
+ ssh->mainchan->v.v2.winadj_tail = NULL;
+ ssh->mainchan->v.v2.throttle_state = UNTHROTTLED;
ssh2_pkt_adduint32(s->pktout, ssh->mainchan->v.v2.locwindow);/* our window size */
ssh2_pkt_adduint32(s->pktout, OUR_V2_MAXPKT); /* our max pkt size */
ssh2_pkt_send(ssh, s->pktout);
ssh->packet_dispatch[SSH2_MSG_CHANNEL_OPEN] =
ssh2_msg_channel_open;
+ if (ssh->cfg.ssh_simple) {
+ /*
+ * This message indicates to the server that we promise
+ * not to try to run any other channel in parallel with
+ * this one, so it's safe for it to advertise a very large
+ * window and leave the flow control to TCP.
+ */
+ s->pktout = ssh2_pkt_init(SSH2_MSG_CHANNEL_REQUEST);
+ ssh2_pkt_adduint32(s->pktout, ssh->mainchan->remoteid);
+ ssh2_pkt_addstring(s->pktout, "simple@putty.projects.tartarus.org");
+ ssh2_pkt_addbool(s->pktout, 0); /* no reply */
+ ssh2_pkt_send(ssh, s->pktout);
+ }
+
/*
* Potentially enable X11 forwarding.
*/
ssh_special(ssh, TS_EOF);
/*
+ * All the initial channel requests are done, so install the default
+ * failure handler.
+ */
+ ssh->packet_dispatch[SSH2_MSG_CHANNEL_FAILURE] = ssh2_msg_channel_failure;
+
+ /*
* Transfer data!
*/
if (ssh->ldisc)
ssh->deferred_len = 0;
ssh->deferred_size = 0;
ssh->fallback_cmd = 0;
- ssh->pkt_ctx = 0;
+ ssh->pkt_kctx = SSH2_PKTCTX_NOKEX;
+ ssh->pkt_actx = SSH2_PKTCTX_NOAUTH;
ssh->x11auth = NULL;
ssh->v1_compressing = FALSE;
ssh->v2_outgoing_sequence = 0;
ssh1_throttle(ssh, -1);
}
} else {
- ssh2_set_window(ssh->mainchan, OUR_V2_WINSIZE - bufsize);
+ if (ssh->mainchan)
+ ssh2_set_window(ssh->mainchan,
+ ssh->mainchan->v.v2.locmaxwin - bufsize);
}
}
pktout = ssh2_pkt_init(SSH2_MSG_CHANNEL_OPEN);
ssh2_pkt_addstring(pktout, "direct-tcpip");
ssh2_pkt_adduint32(pktout, c->localid);
- c->v.v2.locwindow = OUR_V2_WINSIZE;
+ c->v.v2.locwindow = c->v.v2.locmaxwin = OUR_V2_WINSIZE;
+ c->v.v2.remlocwin = OUR_V2_WINSIZE;
+ c->v.v2.winadj_head = c->v.v2.winadj_head = NULL;
+ c->v.v2.throttle_state = UNTHROTTLED;
ssh2_pkt_adduint32(pktout, c->v.v2.locwindow);/* our window size */
ssh2_pkt_adduint32(pktout, OUR_V2_MAXPKT); /* our max pkt size */
ssh2_pkt_addstring(pktout, hostname);
projects / u / mdw / putty / blobdiff