#define TRUE 1
#endif
-#define logevent(s) { logevent(s); \
- if ((flags & FLAG_STDERR) && (flags & FLAG_VERBOSE)) \
- { fprintf(stderr, "%s\n", s); fflush(stderr); } }
-
-/* logevent, only printf-formatted. */
-void logeventf(char *fmt, ...)
-{
- va_list ap;
- char stuff[200];
-
- va_start(ap, fmt);
- vsprintf(stuff, fmt, ap);
- va_end(ap);
- logevent(stuff);
-}
-
-#define bombout(msg) ( ssh->state = SSH_STATE_CLOSED, \
- (ssh->s ? sk_close(ssh->s), ssh->s = NULL : 0), \
- logeventf msg, connection_fatal msg )
-
#define SSH1_MSG_DISCONNECT 1 /* 0x1 */
#define SSH1_SMSG_PUBLIC_KEY 2 /* 0x2 */
#define SSH1_CMSG_SESSION_KEY 3 /* 0x3 */
typedef struct ssh_tag *Ssh;
-extern char *x11_init(Socket *, char *, void *);
+extern char *x11_init(Socket *, char *, void *, void *);
extern void x11_close(Socket);
extern int x11_send(Socket, char *, int);
-extern void x11_invent_auth(char *, int, char *, int);
+extern void *x11_invent_auth(char *, int, char *, int);
extern void x11_unthrottle(Socket s);
extern void x11_override_throttle(Socket s, int enable);
extern char *pfd_newconnect(Socket * s, char *hostname, int port, void *c);
-extern char *pfd_addforward(char *desthost, int destport, int port);
+extern char *pfd_addforward(char *desthost, int destport, int port,
+ void *backhandle);
extern void pfd_close(Socket s);
extern int pfd_send(Socket s, char *data, int len);
extern void pfd_confirm(Socket s);
const static struct ssh_signkey *hostkey_algs[] = { &ssh_rsa, &ssh_dss };
-static void nullmac_key(unsigned char *key)
+static void *nullmac_make_context(void)
{
+ return NULL;
}
-static void nullmac_generate(unsigned char *blk, int len,
+static void nullmac_free_context(void *handle)
+{
+}
+static void nullmac_key(void *handle, unsigned char *key)
+{
+}
+static void nullmac_generate(void *handle, unsigned char *blk, int len,
unsigned long seq)
{
}
-static int nullmac_verify(unsigned char *blk, int len, unsigned long seq)
+static int nullmac_verify(void *handle, unsigned char *blk, int len,
+ unsigned long seq)
{
return 1;
}
const static struct ssh_mac ssh_mac_none = {
- nullmac_key, nullmac_key, nullmac_generate, nullmac_verify, "none", 0
+ nullmac_make_context, nullmac_free_context, nullmac_key,
+ nullmac_generate, nullmac_verify, "none", 0
};
const static struct ssh_mac *macs[] = {
&ssh_sha1, &ssh_md5, &ssh_mac_none
&ssh_sha1_buggy, &ssh_md5, &ssh_mac_none
};
-static void ssh_comp_none_init(void)
+static void *ssh_comp_none_init(void)
+{
+ return NULL;
+}
+static void ssh_comp_none_cleanup(void *handle)
{
}
-static int ssh_comp_none_block(unsigned char *block, int len,
+static int ssh_comp_none_block(void *handle, unsigned char *block, int len,
unsigned char **outblock, int *outlen)
{
return 0;
}
-static int ssh_comp_none_disable(void)
+static int ssh_comp_none_disable(void *handle)
{
return 0;
}
const static struct ssh_compress ssh_comp_none = {
"none",
- ssh_comp_none_init, ssh_comp_none_block,
- ssh_comp_none_init, ssh_comp_none_block,
- ssh_comp_none_disable
+ ssh_comp_none_init, ssh_comp_none_cleanup, ssh_comp_none_block,
+ ssh_comp_none_init, ssh_comp_none_cleanup, ssh_comp_none_block,
+ ssh_comp_none_disable, NULL
};
extern const struct ssh_compress ssh_zlib;
const static struct ssh_compress *compressions[] = {
Socket s;
+ void *ldisc;
+ void *logctx;
+
unsigned char session_key[32];
int v1_compressing;
int v1_remote_protoflags;
int remote_bugs;
const struct ssh_cipher *cipher;
void *v1_cipher_ctx;
+ void *crcda_ctx;
const struct ssh2_cipher *cscipher, *sccipher;
void *cs_cipher_ctx, *sc_cipher_ctx;
const struct ssh_mac *csmac, *scmac;
+ void *cs_mac_ctx, *sc_mac_ctx;
const struct ssh_compress *cscomp, *sccomp;
+ void *cs_comp_ctx, *sc_comp_ctx;
const struct ssh_kex *kex;
const struct ssh_signkey *hostkey;
unsigned char v2_session_id[20];
+ void *kex_ctx;
char *savedhost;
int savedport;
char *portfwd_strptr;
int pkt_ctx;
+ void *x11auth;
+
int version;
int v1_throttle_count;
int overall_bufsize;
int (*s_rdpkt) (Ssh ssh, unsigned char **data, int *datalen);
};
+#define logevent(s) { logevent(ssh->frontend, s); \
+ if ((flags & FLAG_STDERR) && (flags & FLAG_VERBOSE)) \
+ { fprintf(stderr, "%s\n", s); fflush(stderr); } }
+
+/* logevent, only printf-formatted. */
+void logeventf(Ssh ssh, char *fmt, ...)
+{
+ va_list ap;
+ char stuff[200];
+
+ va_start(ap, fmt);
+ vsprintf(stuff, fmt, ap);
+ va_end(ap);
+ logevent(stuff);
+}
+
+#define bombout(msg) ( ssh->state = SSH_STATE_CLOSED, \
+ (ssh->s ? sk_close(ssh->s), ssh->s = NULL : 0), \
+ logeventf msg, connection_fatal msg )
+
static int ssh_channelcmp(void *av, void *bv)
{
struct ssh_channel *a = (struct ssh_channel *) av;
st->to_read -= st->chunk;
}
- if (ssh->cipher && detect_attack(ssh->pktin.data, st->biglen, NULL)) {
- bombout(("Network attack (CRC compensation) detected!"));
+ if (ssh->cipher && detect_attack(ssh->crcda_ctx, ssh->pktin.data,
+ st->biglen, NULL)) {
+ bombout((ssh,"Network attack (CRC compensation) detected!"));
crReturn(0);
}
st->realcrc = crc32(ssh->pktin.data, st->biglen - 4);
st->gotcrc = GET_32BIT(ssh->pktin.data + st->biglen - 4);
if (st->gotcrc != st->realcrc) {
- bombout(("Incorrect CRC received on packet"));
+ bombout((ssh,"Incorrect CRC received on packet"));
crReturn(0);
}
if (ssh->v1_compressing) {
unsigned char *decompblk;
int decomplen;
- zlib_decompress_block(ssh->pktin.body - 1, ssh->pktin.length + 1,
+ zlib_decompress_block(ssh->sc_comp_ctx,
+ ssh->pktin.body - 1, ssh->pktin.length + 1,
&decompblk, &decomplen);
if (ssh->pktin.maxlen < st->pad + decomplen) {
ssh->pktin.type = ssh->pktin.body[-1];
- log_packet(PKT_INCOMING, ssh->pktin.type, ssh1_pkt_type(ssh->pktin.type),
- ssh->pktin.body, ssh->pktin.length);
+ if (ssh->logctx)
+ log_packet(ssh->logctx,
+ PKT_INCOMING, ssh->pktin.type,
+ ssh1_pkt_type(ssh->pktin.type),
+ ssh->pktin.body, ssh->pktin.length);
if (ssh->pktin.type == SSH1_SMSG_STDOUT_DATA ||
ssh->pktin.type == SSH1_SMSG_STDERR_DATA ||
ssh->pktin.type == SSH1_SMSG_AUTH_CCARD_CHALLENGE) {
long stringlen = GET_32BIT(ssh->pktin.body);
if (stringlen + 4 != ssh->pktin.length) {
- bombout(("Received data packet with bogus string length"));
+ bombout((ssh,"Received data packet with bogus string length"));
crReturn(0);
}
}
memcpy(buf + nowlen, ssh->pktin.body + 4, msglen);
buf[nowlen + msglen] = '\0';
/* logevent(buf); (this is now done within the bombout macro) */
- bombout(("Server sent disconnect message:\n\"%s\"", buf+nowlen));
+ bombout((ssh,"Server sent disconnect message:\n\"%s\"", buf+nowlen));
crReturn(0);
}
* do us any more damage.
*/
if (st->len < 0 || st->pad < 0 || st->len + st->pad < 0) {
- bombout(("Incoming packet was garbled on decryption"));
+ bombout((ssh,"Incoming packet was garbled on decryption"));
crReturn(0);
}
* Check the MAC.
*/
if (ssh->scmac
- && !ssh->scmac->verify(ssh->pktin.data, st->len + 4,
+ && !ssh->scmac->verify(ssh->sc_mac_ctx, ssh->pktin.data, st->len + 4,
st->incoming_sequence)) {
- bombout(("Incorrect MAC received on packet"));
+ bombout((ssh,"Incorrect MAC received on packet"));
crReturn(0);
}
st->incoming_sequence++; /* whether or not we MACed */
unsigned char *newpayload;
int newlen;
if (ssh->sccomp &&
- ssh->sccomp->decompress(ssh->pktin.data + 5, ssh->pktin.length - 5,
+ ssh->sccomp->decompress(ssh->sc_comp_ctx,
+ ssh->pktin.data + 5, ssh->pktin.length - 5,
&newpayload, &newlen)) {
if (ssh->pktin.maxlen < newlen + 5) {
ssh->pktin.maxlen = newlen + 5;
ssh->pktin.savedpos = 6;
ssh->pktin.type = ssh->pktin.data[5];
- log_packet(PKT_INCOMING, ssh->pktin.type,
- ssh2_pkt_type(ssh->pkt_ctx, ssh->pktin.type),
- ssh->pktin.data+6, ssh->pktin.length-6);
+ if (ssh->logctx)
+ log_packet(ssh->logctx, PKT_INCOMING, ssh->pktin.type,
+ ssh2_pkt_type(ssh->pkt_ctx, ssh->pktin.type),
+ ssh->pktin.data+6, ssh->pktin.length-6);
switch (ssh->pktin.type) {
/*
memcpy(buf + nowlen, ssh->pktin.data + 14, msglen);
buf[nowlen + msglen] = '\0';
logevent(buf);
- bombout(("Server sent disconnect message\ntype %d (%s):\n\"%s\"",
+ bombout((ssh,"Server sent disconnect message\ntype %d (%s):\n\"%s\"",
reason,
(reason > 0 && reason < lenof(ssh2_disconnect_reasons)) ?
ssh2_disconnect_reasons[reason] : "unknown",
ssh->pktout.body[-1] = ssh->pktout.type;
- log_packet(PKT_OUTGOING, ssh->pktout.type, ssh1_pkt_type(ssh->pktout.type),
- ssh->pktout.body, ssh->pktout.length);
+ if (ssh->logctx)
+ log_packet(ssh->logctx, PKT_OUTGOING, ssh->pktout.type,
+ ssh1_pkt_type(ssh->pktout.type),
+ ssh->pktout.body, ssh->pktout.length);
if (ssh->v1_compressing) {
unsigned char *compblk;
int complen;
- zlib_compress_block(ssh->pktout.body - 1, ssh->pktout.length + 1,
+ zlib_compress_block(ssh->cs_comp_ctx,
+ ssh->pktout.body - 1, ssh->pktout.length + 1,
&compblk, &complen);
ssh1_pktout_size(ssh, complen - 1);
memcpy(ssh->pktout.body - 1, compblk, complen);
{
int cipherblk, maclen, padding, i;
- log_packet(PKT_OUTGOING, ssh->pktout.data[5],
- ssh2_pkt_type(ssh->pkt_ctx, ssh->pktout.data[5]),
- ssh->pktout.data + 6, ssh->pktout.length - 6);
+ if (ssh->logctx)
+ log_packet(ssh->logctx, PKT_OUTGOING, ssh->pktout.data[5],
+ ssh2_pkt_type(ssh->pkt_ctx, ssh->pktout.data[5]),
+ ssh->pktout.data + 6, ssh->pktout.length - 6);
/*
* Compress packet payload.
unsigned char *newpayload;
int newlen;
if (ssh->cscomp &&
- ssh->cscomp->compress(ssh->pktout.data + 5, ssh->pktout.length - 5,
+ ssh->cscomp->compress(ssh->cs_comp_ctx, ssh->pktout.data + 5,
+ ssh->pktout.length - 5,
&newpayload, &newlen)) {
ssh->pktout.length = 5;
ssh2_pkt_adddata(ssh, newpayload, newlen);
ssh->pktout.data[ssh->pktout.length + i] = random_byte();
PUT_32BIT(ssh->pktout.data, ssh->pktout.length + padding - 4);
if (ssh->csmac)
- ssh->csmac->generate(ssh->pktout.data, ssh->pktout.length + padding,
+ ssh->csmac->generate(ssh->cs_mac_ctx, ssh->pktout.data,
+ ssh->pktout.length + padding,
ssh->v2_outgoing_sequence);
ssh->v2_outgoing_sequence++; /* whether or not we MACed */
if (!p)
return NULL;
if (p[0] & 0x80) {
- bombout(("internal error: Can't handle negative mpints"));
+ bombout((ssh,"internal error: Can't handle negative mpints"));
return NULL;
}
b = bignum_from_bytes(p, length);
s->proto2 = ssh_versioncmp(s->version, "1.99") >= 0;
if (cfg.sshprot == 0 && !s->proto1) {
- bombout(("SSH protocol version 1 required by user but not provided by server"));
+ bombout((ssh,"SSH protocol version 1 required by user but not provided by server"));
crReturn(0);
}
if (cfg.sshprot == 3 && !s->proto2) {
- bombout(("SSH protocol version 2 required by user but not provided by server"));
+ bombout((ssh,"SSH protocol version 2 required by user but not provided by server"));
crReturn(0);
}
if (error_msg) {
/* A socket error has occurred. */
logevent(error_msg);
- connection_fatal(error_msg);
+ connection_fatal(ssh->frontend, error_msg);
} else {
/* Otherwise, the remote side closed the connection normally. */
}
crWaitUntil(ispkt);
if (ssh->pktin.type != SSH1_SMSG_PUBLIC_KEY) {
- bombout(("Public key packet not received"));
+ bombout((ssh,"Public key packet not received"));
crReturn(0);
}
fatalbox("Out of memory");
rsastr_fmt(keystr, &hostkey);
rsa_fingerprint(fingerprint, sizeof(fingerprint), &hostkey);
- verify_ssh_host_key(ssh->savedhost, ssh->savedport, "rsa", keystr,
+ verify_ssh_host_key(ssh->frontend,
+ ssh->savedhost, ssh->savedport, "rsa", keystr,
fingerprint);
sfree(keystr);
}
}
if (!cipher_chosen) {
if ((s->supported_ciphers_mask & (1 << SSH_CIPHER_3DES)) == 0)
- bombout(("Server violates SSH 1 protocol by not "
+ bombout((ssh,"Server violates SSH 1 protocol by not "
"supporting 3DES encryption"));
else
/* shouldn't happen */
- bombout(("No supported ciphers found"));
+ bombout((ssh,"No supported ciphers found"));
crReturn(0);
}
/* Warn about chosen cipher if necessary. */
if (warn)
- askcipher(cipher_string, 0);
+ askcipher(ssh->frontend, cipher_string, 0);
}
switch (s->cipher_type) {
logevent(buf);
}
+ ssh->crcda_ctx = crcda_make_context();
+ logevent("Installing CRC compensation attack detector");
+
crWaitUntil(ispkt);
if (ssh->pktin.type != SSH1_SMSG_SUCCESS) {
- bombout(("Encryption not successfully enabled"));
+ bombout((ssh,"Encryption not successfully enabled"));
crReturn(0);
}
PKT_STR, "No more passwords available to try",
PKT_END);
logevent("Unable to authenticate");
- connection_fatal("Unable to authenticate");
+ connection_fatal(ssh->frontend, "Unable to authenticate");
ssh->state = SSH_STATE_CLOSED;
crReturn(1);
}
continue; /* go and try password */
}
if (ssh->pktin.type != SSH1_SMSG_AUTH_RSA_CHALLENGE) {
- bombout(("Bizarre response to offer of public key"));
+ bombout((ssh,"Bizarre response to offer of public key"));
crReturn(0);
}
" our public key.\r\n");
continue; /* go and try password */
} else if (ssh->pktin.type != SSH1_SMSG_SUCCESS) {
- bombout(("Bizarre response to RSA authentication response"));
+ bombout((ssh,"Bizarre response to RSA authentication response"));
crReturn(0);
}
c_write_str(ssh, "Access denied\r\n");
logevent("Authentication refused");
} else if (ssh->pktin.type != SSH1_SMSG_SUCCESS) {
- bombout(("Strange packet received, type %d", ssh->pktin.type));
+ bombout((ssh,"Strange packet received, type %d", ssh->pktin.type));
crReturn(0);
}
}
} while (!ispkt);
if (ssh->pktin.type != SSH1_SMSG_SUCCESS
&& ssh->pktin.type != SSH1_SMSG_FAILURE) {
- bombout(("Protocol confusion"));
+ bombout((ssh,"Protocol confusion"));
crReturnV;
} else if (ssh->pktin.type == SSH1_SMSG_FAILURE) {
logevent("Agent forwarding refused");
if (cfg.x11_forward) {
char proto[20], data[64];
logevent("Requesting X11 forwarding");
- x11_invent_auth(proto, sizeof(proto), data, sizeof(data));
+ ssh->x11auth = x11_invent_auth(proto, sizeof(proto),
+ data, sizeof(data));
if (ssh->v1_local_protoflags & SSH1_PROTOFLAG_SCREEN_NUMBER) {
send_packet(ssh, SSH1_CMSG_X11_REQUEST_FORWARDING,
PKT_STR, proto, PKT_STR, data,
} while (!ispkt);
if (ssh->pktin.type != SSH1_SMSG_SUCCESS
&& ssh->pktin.type != SSH1_SMSG_FAILURE) {
- bombout(("Protocol confusion"));
+ bombout((ssh,"Protocol confusion"));
crReturnV;
} else if (ssh->pktin.type == SSH1_SMSG_FAILURE) {
logevent("X11 forwarding refused");
}
if (sport && dport) {
if (type == 'L') {
- pfd_addforward(host, dport, sport);
+ pfd_addforward(host, dport, sport, ssh);
sprintf(buf, "Local port %.*s%.*s%d%.*s forwarding to"
" %s:%.*s%.*s%d%.*s",
sserv ? strlen(sports) : 0, sports,
} while (!ispkt);
if (ssh->pktin.type != SSH1_SMSG_SUCCESS
&& ssh->pktin.type != SSH1_SMSG_FAILURE) {
- bombout(("Protocol confusion"));
+ bombout((ssh,"Protocol confusion"));
crReturnV;
} else if (ssh->pktin.type == SSH1_SMSG_FAILURE) {
c_write_str(ssh, "Server refused port"
} while (!ispkt);
if (ssh->pktin.type != SSH1_SMSG_SUCCESS
&& ssh->pktin.type != SSH1_SMSG_FAILURE) {
- bombout(("Protocol confusion"));
+ bombout((ssh,"Protocol confusion"));
crReturnV;
} else if (ssh->pktin.type == SSH1_SMSG_FAILURE) {
c_write_str(ssh, "Server refused to allocate pty\r\n");
} while (!ispkt);
if (ssh->pktin.type != SSH1_SMSG_SUCCESS
&& ssh->pktin.type != SSH1_SMSG_FAILURE) {
- bombout(("Protocol confusion"));
+ bombout((ssh,"Protocol confusion"));
crReturnV;
} else if (ssh->pktin.type == SSH1_SMSG_FAILURE) {
c_write_str(ssh, "Server refused to compress\r\n");
}
logevent("Started compression");
ssh->v1_compressing = TRUE;
- zlib_compress_init();
- zlib_decompress_init();
+ ssh->cs_comp_ctx = zlib_compress_init();
+ logevent("Initialised zlib (RFC1950) compression");
+ ssh->sc_comp_ctx = zlib_decompress_init();
+ logevent("Initialised zlib (RFC1950) decompression");
}
/*
if (ssh->eof_needed)
ssh_special(ssh, TS_EOF);
- ldisc_send(NULL, 0, 0); /* cause ldisc to notice changes */
+ if (ssh->ldisc)
+ ldisc_send(ssh->ldisc, NULL, 0, 0);/* cause ldisc to notice changes */
ssh->send_ok = 1;
ssh->channels = newtree234(ssh_channelcmp);
while (1) {
c = smalloc(sizeof(struct ssh_channel));
c->ssh = ssh;
- if (x11_init(&c->u.x11.s, cfg.x11_display, c) != NULL) {
+ if (x11_init(&c->u.x11.s, cfg.x11_display, c,
+ ssh->x11auth) != NULL) {
logevent("opening X11 forward connection failed");
sfree(c);
send_packet(ssh, SSH1_MSG_CHANNEL_OPEN_FAILURE,
sfree(c);
}
} else {
- bombout(("Received CHANNEL_CLOSE%s for %s channel %d\n",
+ bombout((ssh,"Received CHANNEL_CLOSE%s for %s channel %d\n",
ssh->pktin.type == SSH1_MSG_CHANNEL_CLOSE ? "" :
"_CONFIRMATION", c ? "half-open" : "nonexistent",
i));
ssh->state = SSH_STATE_CLOSED;
crReturnV;
} else {
- bombout(("Strange packet received: type %d", ssh->pktin.type));
+ bombout((ssh,"Strange packet received: type %d", ssh->pktin.type));
crReturnV;
}
} else {
int i, j, len;
if (ssh->pktin.type != SSH2_MSG_KEXINIT) {
- bombout(("expected key exchange packet from server"));
+ bombout((ssh,"expected key exchange packet from server"));
crReturn(0);
}
ssh->kex = NULL;
}
if (s->cscipher_tobe) {
if (s->warn)
- askcipher(s->cscipher_tobe->name, 1);
+ askcipher(ssh->frontend, s->cscipher_tobe->name, 1);
break;
}
}
if (!s->cscipher_tobe) {
- bombout(("Couldn't agree a client-to-server cipher (available: %s)", str));
+ bombout((ssh,"Couldn't agree a client-to-server cipher (available: %s)", str));
crReturn(0);
}
}
if (s->sccipher_tobe) {
if (s->warn)
- askcipher(s->sccipher_tobe->name, 2);
+ askcipher(ssh->frontend, s->sccipher_tobe->name, 2);
break;
}
}
if (!s->sccipher_tobe) {
- bombout(("Couldn't agree a server-to-client cipher (available: %s)", str));
+ bombout((ssh,"Couldn't agree a server-to-client cipher (available: %s)", str));
crReturn(0);
}
crWaitUntil(ispkt);
if (ssh->pktin.type != SSH2_MSG_KEX_DH_GEX_GROUP) {
- bombout(("expected key exchange group packet from server"));
+ bombout((ssh,"expected key exchange group packet from server"));
crReturn(0);
}
s->p = ssh2_pkt_getmp(ssh);
s->g = ssh2_pkt_getmp(ssh);
- dh_setup_group(s->p, s->g);
+ ssh->kex_ctx = dh_setup_group(s->p, s->g);
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_DHGROUP1;
- dh_setup_group1();
+ ssh->kex_ctx = dh_setup_group1();
s->kex_init_value = SSH2_MSG_KEXDH_INIT;
s->kex_reply_value = SSH2_MSG_KEXDH_REPLY;
}
/*
* Now generate and send e for Diffie-Hellman.
*/
- s->e = dh_create_e(s->nbits * 2);
+ s->e = dh_create_e(ssh->kex_ctx, s->nbits * 2);
ssh2_pkt_init(ssh, s->kex_init_value);
ssh2_pkt_addmp(ssh, s->e);
ssh2_pkt_send(ssh);
crWaitUntil(ispkt);
if (ssh->pktin.type != s->kex_reply_value) {
- bombout(("expected key exchange reply packet from server"));
+ bombout((ssh,"expected key exchange reply packet from server"));
crReturn(0);
}
ssh2_pkt_getstring(ssh, &s->hostkeydata, &s->hostkeylen);
s->f = ssh2_pkt_getmp(ssh);
ssh2_pkt_getstring(ssh, &s->sigdata, &s->siglen);
- s->K = dh_find_K(s->f);
+ s->K = dh_find_K(ssh->kex_ctx, s->f);
sha_string(&ssh->exhash, s->hostkeydata, s->hostkeylen);
if (ssh->kex == &ssh_diffiehellman_gex) {
sha_mpint(&ssh->exhash, s->K);
SHA_Final(&ssh->exhash, s->exchange_hash);
- dh_cleanup();
+ dh_cleanup(ssh->kex_ctx);
#if 0
debug(("Exchange hash is:\n"));
if (!s->hkey ||
!ssh->hostkey->verifysig(s->hkey, s->sigdata, s->siglen,
s->exchange_hash, 20)) {
- bombout(("Server's host key did not match the signature supplied"));
+ bombout((ssh,"Server's host key did not match the signature supplied"));
crReturn(0);
}
*/
s->keystr = ssh->hostkey->fmtkey(s->hkey);
s->fingerprint = ssh->hostkey->fingerprint(s->hkey);
- verify_ssh_host_key(ssh->savedhost, ssh->savedport, ssh->hostkey->keytype,
+ verify_ssh_host_key(ssh->frontend,
+ ssh->savedhost, ssh->savedport, ssh->hostkey->keytype,
s->keystr, s->fingerprint);
if (s->first_kex) { /* don't bother logging this in rekeys */
logevent("Host key fingerprint is:");
*/
crWaitUntil(ispkt);
if (ssh->pktin.type != SSH2_MSG_NEWKEYS) {
- bombout(("expected new-keys packet from server"));
+ bombout((ssh,"expected new-keys packet from server"));
crReturn(0);
}
ssh->cscipher->free_context(ssh->cs_cipher_ctx);
ssh->cscipher = s->cscipher_tobe;
ssh->cs_cipher_ctx = ssh->cscipher->make_context();
+
if (ssh->sc_cipher_ctx)
ssh->sccipher->free_context(ssh->sc_cipher_ctx);
ssh->sccipher = s->sccipher_tobe;
ssh->sc_cipher_ctx = ssh->sccipher->make_context();
+
+ if (ssh->cs_mac_ctx)
+ ssh->csmac->free_context(ssh->cs_mac_ctx);
ssh->csmac = s->csmac_tobe;
+ ssh->cs_mac_ctx = ssh->csmac->make_context();
+
+ if (ssh->sc_mac_ctx)
+ ssh->scmac->free_context(ssh->sc_mac_ctx);
ssh->scmac = s->scmac_tobe;
+ ssh->sc_mac_ctx = ssh->scmac->make_context();
+
+ if (ssh->cs_comp_ctx)
+ ssh->cscomp->compress_cleanup(ssh->cs_comp_ctx);
ssh->cscomp = s->cscomp_tobe;
+ ssh->cs_comp_ctx = ssh->cscomp->compress_init();
+
+ if (ssh->sc_comp_ctx)
+ ssh->sccomp->decompress_cleanup(ssh->sc_comp_ctx);
ssh->sccomp = s->sccomp_tobe;
- ssh->cscomp->compress_init();
- ssh->sccomp->decompress_init();
+ ssh->sc_comp_ctx = ssh->sccomp->decompress_init();
+
/*
* Set IVs after keys. Here we use the exchange hash from the
* _first_ key exchange.
ssh2_mkkey(ssh,s->K,s->exchange_hash,ssh->v2_session_id,'B',keyspace);
ssh->sccipher->setiv(ssh->sc_cipher_ctx, keyspace);
ssh2_mkkey(ssh,s->K,s->exchange_hash,ssh->v2_session_id,'E',keyspace);
- ssh->csmac->setcskey(keyspace);
+ ssh->csmac->setkey(ssh->cs_mac_ctx, keyspace);
ssh2_mkkey(ssh,s->K,s->exchange_hash,ssh->v2_session_id,'F',keyspace);
- ssh->scmac->setsckey(keyspace);
+ ssh->scmac->setkey(ssh->sc_mac_ctx, keyspace);
}
{
char buf[256];
sprintf(buf, "Initialised %.200s server->client encryption",
ssh->sccipher->text_name);
logevent(buf);
+ if (ssh->cscomp->text_name) {
+ sprintf(buf, "Initialised %.200s compression",
+ ssh->cscomp->text_name);
+ logevent(buf);
+ }
+ if (ssh->sccomp->text_name) {
+ sprintf(buf, "Initialised %.200s decompression",
+ ssh->sccomp->text_name);
+ logevent(buf);
+ }
}
ssh2_pkt_send(ssh);
crWaitUntilV(ispkt);
if (ssh->pktin.type != SSH2_MSG_SERVICE_ACCEPT) {
- bombout(("Server refused user authentication protocol"));
+ bombout((ssh,"Server refused user authentication protocol"));
crReturnV;
}
/* Load the pub half of cfg.keyfile so we notice if it's in Pageant */
if (*cfg.keyfile) {
int keytype;
- logeventf("Reading private key file \"%.150s\"", cfg.keyfile);
+ logeventf(ssh->frontend,
+ "Reading private key file \"%.150s\"", cfg.keyfile);
keytype = key_type(cfg.keyfile);
if (keytype == SSH_KEYTYPE_SSH2) {
s->publickey_blob =
&s->publickey_bloblen);
} else {
char msgbuf[256];
- logeventf("Unable to use this key file (%s)",
- key_type_to_str(keytype));
+ logeventf(ssh->frontend,
+ "Unable to use this key file (%s)",
+ key_type_to_str(keytype));
sprintf(msgbuf, "Unable to use key file \"%.150s\" (%s)\r\n",
cfg.keyfile, key_type_to_str(keytype));
c_write_str(ssh, msgbuf);
if (!s->gotit)
s->curr_prompt = 0;
} else if (ssh->pktin.type != SSH2_MSG_USERAUTH_FAILURE) {
- bombout(("Strange packet received during authentication: type %d",
+ bombout((ssh,"Strange packet received during authentication: type %d",
ssh->pktin.type));
crReturnV;
}
ssh2_pkt_addstring(ssh, "en"); /* language tag */
ssh2_pkt_send(ssh);
logevent("Unable to authenticate");
- connection_fatal("Unable to authenticate");
+ connection_fatal(ssh->frontend,
+ "Unable to authenticate");
ssh->state = SSH_STATE_CLOSED;
crReturnV;
}
* bytes we should adjust our string length
* by.
*/
- stringlen -= ssh->cscomp->disable_compression();
+ stringlen -=
+ ssh->cscomp->disable_compression(ssh->cs_comp_ctx);
}
ssh2_pkt_init(ssh, SSH2_MSG_IGNORE);
ssh2_pkt_addstring_start(ssh);
ssh2_pkt_send(ssh);
crWaitUntilV(ispkt);
if (ssh->pktin.type != SSH2_MSG_CHANNEL_OPEN_CONFIRMATION) {
- bombout(("Server refused to open a session"));
+ bombout((ssh,"Server refused to open a session"));
crReturnV;
/* FIXME: error data comes back in FAILURE packet */
}
if (ssh2_pkt_getuint32(ssh) != ssh->mainchan->localid) {
- bombout(("Server's channel confirmation cited wrong channel"));
+ bombout((ssh,"Server's channel confirmation cited wrong channel"));
crReturnV;
}
ssh->mainchan->remoteid = ssh2_pkt_getuint32(ssh);
if (cfg.x11_forward) {
char proto[20], data[64];
logevent("Requesting X11 forwarding");
- x11_invent_auth(proto, sizeof(proto), data, sizeof(data));
+ ssh->x11auth = x11_invent_auth(proto, sizeof(proto),
+ data, sizeof(data));
ssh2_pkt_init(ssh, SSH2_MSG_CHANNEL_REQUEST);
ssh2_pkt_adduint32(ssh, ssh->mainchan->remoteid);
ssh2_pkt_addstring(ssh, "x11-req");
if (ssh->pktin.type != SSH2_MSG_CHANNEL_SUCCESS) {
if (ssh->pktin.type != SSH2_MSG_CHANNEL_FAILURE) {
- bombout(("Unexpected response to X11 forwarding request:"
+ bombout((ssh,"Unexpected response to X11 forwarding request:"
" packet type %d", ssh->pktin.type));
crReturnV;
}
}
if (sport && dport) {
if (type == 'L') {
- pfd_addforward(host, dport, sport);
+ pfd_addforward(host, dport, sport, ssh);
sprintf(buf, "Local port %.*s%.*s%d%.*s forwarding to"
" %s:%.*s%.*s%d%.*s",
sserv ? strlen(sports) : 0, sports,
if (ssh->pktin.type != SSH2_MSG_REQUEST_SUCCESS) {
if (ssh->pktin.type != SSH2_MSG_REQUEST_FAILURE) {
- bombout(("Unexpected response to port "
+ bombout((ssh,"Unexpected response to port "
"forwarding request: packet type %d",
ssh->pktin.type));
crReturnV;
if (ssh->pktin.type != SSH2_MSG_CHANNEL_SUCCESS) {
if (ssh->pktin.type != SSH2_MSG_CHANNEL_FAILURE) {
- bombout(("Unexpected response to agent forwarding request:"
+ bombout((ssh,"Unexpected response to agent forwarding request:"
" packet type %d", ssh->pktin.type));
crReturnV;
}
if (ssh->pktin.type != SSH2_MSG_CHANNEL_SUCCESS) {
if (ssh->pktin.type != SSH2_MSG_CHANNEL_FAILURE) {
- bombout(("Unexpected response to pty request:"
+ bombout((ssh,"Unexpected response to pty request:"
" packet type %d", ssh->pktin.type));
crReturnV;
}
} while (ssh->pktin.type == SSH2_MSG_CHANNEL_WINDOW_ADJUST);
if (ssh->pktin.type != SSH2_MSG_CHANNEL_SUCCESS) {
if (ssh->pktin.type != SSH2_MSG_CHANNEL_FAILURE) {
- bombout(("Unexpected response to shell/command request:"
+ bombout((ssh,"Unexpected response to shell/command request:"
" packet type %d", ssh->pktin.type));
crReturnV;
}
ssh->fallback_cmd = TRUE;
continue;
}
- bombout(("Server refused to start a shell/command"));
+ bombout((ssh,"Server refused to start a shell/command"));
crReturnV;
} else {
logevent("Started a shell/command");
/*
* Transfer data!
*/
- ldisc_send(NULL, 0, 0); /* cause ldisc to notice changes */
+ if (ssh->ldisc)
+ ldisc_send(ssh->ldisc, NULL, 0, 0);/* cause ldisc to notice changes */
ssh->send_ok = 1;
while (1) {
crReturnV;
c = find234(ssh->channels, &i, ssh_channelfind);
if (!c || ((int)c->remoteid) == -1) {
- bombout(("Received CHANNEL_CLOSE for %s channel %d\n",
+ bombout((ssh,"Received CHANNEL_CLOSE for %s channel %d\n",
c ? "half-open" : "nonexistent", i));
}
/* Do pre-close processing on the channel. */
if (typelen == 3 && !memcmp(type, "x11", 3)) {
if (!ssh->X11_fwd_enabled)
error = "X11 forwarding is not enabled";
- else if (x11_init(&c->u.x11.s, cfg.x11_display, c) !=
- NULL) {
+ else if (x11_init(&c->u.x11.s, cfg.x11_display, c,
+ ssh->x11auth) != NULL) {
error = "Unable to open an X11 connection";
} else {
c->type = CHAN_X11;
ssh2_pkt_send(ssh);
}
} else {
- bombout(("Strange packet received: type %d", ssh->pktin.type));
+ bombout((ssh,"Strange packet received: type %d", ssh->pktin.type));
crReturnV;
}
} else {
ssh->s = NULL;
ssh->cipher = NULL;
ssh->v1_cipher_ctx = NULL;
+ ssh->crcda_ctx = NULL;
ssh->cscipher = NULL;
ssh->cs_cipher_ctx = NULL;
ssh->sccipher = NULL;
ssh->sc_cipher_ctx = NULL;
ssh->csmac = NULL;
+ ssh->cs_mac_ctx = NULL;
ssh->scmac = NULL;
+ ssh->sc_mac_ctx = NULL;
ssh->cscomp = NULL;
+ ssh->cs_comp_ctx = NULL;
ssh->sccomp = NULL;
+ ssh->sc_comp_ctx = NULL;
ssh->kex = NULL;
ssh->hostkey = NULL;
ssh->exitcode = -1;
ssh->state = SSH_STATE_PREPACKET;
ssh->size_needed = FALSE;
ssh->eof_needed = FALSE;
+ ssh->ldisc = NULL;
+ ssh->logctx = NULL;
{
static const struct Packet empty = { 0, 0, NULL, NULL, 0 };
ssh->pktin = ssh->pktout = empty;
ssh->deferred_size = 0;
ssh->fallback_cmd = 0;
ssh->pkt_ctx = 0;
+ ssh->x11auth = NULL;
ssh->v2_outgoing_sequence = 0;
ssh->ssh1_rdpkt_crstate = 0;
ssh->ssh2_rdpkt_crstate = 0;
break;
case SSH_STATE_SESSION:
if (!cfg.nopty) {
- if (!term)
- return;
if (ssh->version == 1) {
send_packet(ssh, SSH1_CMSG_WINDOW_SIZE,
PKT_INT, ssh->term_height,
}
}
-void ssh_send_port_open(void *handle, void *channel, char *hostname,
- int port, char *org)
+void ssh_send_port_open(void *channel, char *hostname, int port, char *org)
{
- Ssh ssh = (Ssh) handle;
struct ssh_channel *c = (struct ssh_channel *)channel;
+ Ssh ssh = c->ssh;
char buf[1024];
sprintf(buf, "Opening forwarded connection to %.512s:%d", hostname, port);
return FALSE;
}
+static void ssh_provide_ldisc(void *handle, void *ldisc)
+{
+ Ssh ssh = (Ssh) handle;
+ ssh->ldisc = ldisc;
+}
+
+static void ssh_provide_logctx(void *handle, void *logctx)
+{
+ Ssh ssh = (Ssh) handle;
+ ssh->logctx = logctx;
+}
+
static int ssh_return_exitcode(void *handle)
{
Ssh ssh = (Ssh) handle;
ssh_return_exitcode,
ssh_sendok,
ssh_ldisc,
+ ssh_provide_ldisc,
+ ssh_provide_logctx,
ssh_unthrottle,
22
};
projects / u / mdw / putty / blobdiff