-#include <windows.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#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 */
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,
- void *backhandle);
+extern char *pfd_addforward(char *desthost, int destport, char *srcaddr,
+ 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);
Socket s;
void *ldisc;
+ void *logctx;
unsigned char session_key[32];
int v1_compressing;
int (*s_rdpkt) (Ssh ssh, unsigned char **data, int *datalen);
};
+#define logevent(s) do { \
+ logevent(ssh->frontend, s); \
+ if ((flags & FLAG_STDERR) && (flags & FLAG_VERBOSE)) { \
+ fprintf(stderr, "%s\n", s); \
+ fflush(stderr); \
+ } \
+} while (0)
+
+/* logevent, only printf-formatted. */
+void logeventf(Ssh ssh, char *fmt, ...)
+{
+ va_list ap;
+ char *buf;
+
+ va_start(ap, fmt);
+ buf = dupvprintf(fmt, ap);
+ va_end(ap);
+ logevent(buf);
+ if ((flags & FLAG_STDERR) && (flags & FLAG_VERBOSE)) {
+ fprintf(stderr, "%s\n", buf);
+ fflush(stderr);
+ }
+ sfree(buf);
+}
+
+#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;
if (ssh->cipher && detect_attack(ssh->crcda_ctx, ssh->pktin.data,
st->biglen, NULL)) {
- bombout(("Network attack (CRC compensation) detected!"));
+ 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);
}
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);
}
if (ssh->scmac
&& !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 */
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) {
/*
case SSH2_MSG_DISCONNECT:
{
/* log reason code in disconnect message */
- char buf[256];
+ char *buf;
+ int nowlen;
int reason = GET_32BIT(ssh->pktin.data + 6);
unsigned msglen = GET_32BIT(ssh->pktin.data + 10);
- unsigned nowlen;
+
if (reason > 0 && reason < lenof(ssh2_disconnect_reasons)) {
- sprintf(buf, "Received disconnect message (%s)",
- ssh2_disconnect_reasons[reason]);
+ buf = dupprintf("Received disconnect message (%s)",
+ ssh2_disconnect_reasons[reason]);
} else {
- sprintf(buf, "Received disconnect message (unknown type %d)",
- reason);
+ buf = dupprintf("Received disconnect message (unknown"
+ " type %d)", reason);
}
logevent(buf);
- strcpy(buf, "Disconnection message text: ");
- nowlen = strlen(buf);
- if (msglen > sizeof(buf) - nowlen - 1)
- msglen = sizeof(buf) - nowlen - 1;
- memcpy(buf + nowlen, ssh->pktin.data + 14, msglen);
- buf[nowlen + msglen] = '\0';
+ sfree(buf);
+ buf = dupprintf("Disconnection message text: %n%.*s",
+ &nowlen, msglen, ssh->pktin.data + 14);
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",
buf+nowlen));
+ sfree(buf);
crReturn(0);
}
break;
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;
pktlen += 4;
break;
case PKT_CHAR:
- (void) va_arg(ap1, char);
+ (void) va_arg(ap1, int);
pktlen++;
break;
case PKT_DATA:
p += 4;
break;
case PKT_CHAR:
- argchar = va_arg(ap2, unsigned char);
+ argchar = (unsigned char) va_arg(ap2, int);
*p = argchar;
p++;
break;
{
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.
}
static void ssh2_pkt_getstring(Ssh ssh, char **p, int *length)
{
+ int len;
*p = NULL;
*length = 0;
if (ssh->pktin.length - ssh->pktin.savedpos < 4)
return;
- *length = GET_32BIT(ssh->pktin.data + ssh->pktin.savedpos);
+ len = GET_32BIT(ssh->pktin.data + ssh->pktin.savedpos);
+ if (len < 0)
+ return;
+ *length = len;
ssh->pktin.savedpos += 4;
if (ssh->pktin.length - ssh->pktin.savedpos < *length)
return;
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);
if (cfg.sshbug_hmac2 == BUG_ON ||
(cfg.sshbug_hmac2 == BUG_AUTO &&
- (!strncmp(imp, "2.1.0", 5) || !strncmp(imp, "2.0.", 4) ||
- !strncmp(imp, "2.2.0", 5) || !strncmp(imp, "2.3.0", 5) ||
- !strncmp(imp, "2.1 ", 4)))) {
+ (wc_match("2.1.0*", imp) || wc_match("2.0.*", imp) ||
+ wc_match("2.2.0*", imp) || wc_match("2.3.0*", imp) ||
+ wc_match("2.1 *", imp)))) {
/*
* These versions have the HMAC bug.
*/
if (cfg.sshbug_derivekey2 == BUG_ON ||
(cfg.sshbug_derivekey2 == BUG_AUTO &&
- (!strncmp(imp, "2.0.", 4)))) {
+ (wc_match("2.0.0*", imp) || wc_match("2.0.1[01]*", imp) ))) {
/*
* These versions have the key-derivation bug (failing to
* include the literal shared secret in the hashes that
if (cfg.sshbug_rsapad2 == BUG_ON ||
(cfg.sshbug_rsapad2 == BUG_AUTO &&
- ((!strncmp(imp, "OpenSSH_2.", 10) && imp[10]>='5' && imp[10]<='9') ||
- (!strncmp(imp, "OpenSSH_3.", 10) && imp[10]>='0' && imp[10]<='2')))){
+ (wc_match("OpenSSH_2.[5-9]*", imp) ||
+ wc_match("OpenSSH_3.[0-2]*", imp)))) {
/*
* These versions have the SSH2 RSA padding bug.
*/
if (cfg.sshbug_dhgex2 == BUG_ON) {
/*
- * These versions have the SSH2 DH GEX bug.
+ * User specified the SSH2 DH GEX bug.
*/
ssh->remote_bugs |= BUG_SSH2_DH_GEX;
logevent("We believe remote version has SSH2 DH group exchange bug");
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. */
}
/*
* Try to find host.
*/
- {
- char buf[200];
- sprintf(buf, "Looking up host \"%.170s\"", host);
- logevent(buf);
- }
- addr = sk_namelookup(host, realhost);
+ logeventf(ssh, "Looking up host \"%s\"", host);
+ addr = name_lookup(host, port, realhost);
if ((err = sk_addr_error(addr)))
return err;
* Open socket.
*/
{
- char buf[200], addrbuf[100];
+ char addrbuf[100];
sk_getaddr(addr, addrbuf, 100);
- sprintf(buf, "Connecting to %.100s port %d", addrbuf, port);
- logevent(buf);
+ logeventf(ssh, "Connecting to %s port %d", addrbuf, port);
}
ssh->fn = &fn_table;
ssh->s = new_connection(addr, *realhost, port, 0, 1, nodelay, (Plug) ssh);
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) {
&ssh_3des);
ssh->v1_cipher_ctx = ssh->cipher->make_context();
ssh->cipher->sesskey(ssh->v1_cipher_ctx, ssh->session_key);
- {
- char buf[256];
- sprintf(buf, "Initialised %.200s encryption", ssh->cipher->text_name);
- logevent(buf);
- }
+ logeventf(ssh, "Initialised %s encryption", ssh->cipher->text_name);
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);
}
char msgbuf[256];
if (flags & FLAG_VERBOSE)
c_write_str(ssh, "Trying public key authentication.\r\n");
- sprintf(msgbuf, "Trying public key \"%.200s\"", cfg.keyfile);
- logevent(msgbuf);
+ logeventf(ssh, "Trying public key \"%s\"", cfg.keyfile);
type = key_type(cfg.keyfile);
if (type != SSH_KEYTYPE_SSH1) {
sprintf(msgbuf, "Key is of wrong type (%s)",
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");
} 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");
char type;
int n;
int sport,dport,sserv,dserv;
- char sports[256], dports[256], host[256];
- char buf[1024];
- struct servent *se;
+ char sports[256], dports[256], saddr[256], host[256];
ssh->rportfwds = newtree234(ssh_rportcmp_ssh1);
/* Add port forwardings. */
ssh->portfwd_strptr = cfg.portfwd;
while (*ssh->portfwd_strptr) {
type = *ssh->portfwd_strptr++;
+ saddr[0] = '\0';
n = 0;
- while (*ssh->portfwd_strptr && *ssh->portfwd_strptr != '\t')
- sports[n++] = *ssh->portfwd_strptr++;
+ while (*ssh->portfwd_strptr && *ssh->portfwd_strptr != '\t') {
+ if (*ssh->portfwd_strptr == ':') {
+ /*
+ * We've seen a colon in the middle of the
+ * source port number. This means that
+ * everything we've seen until now is the
+ * source _address_, so we'll move it into
+ * saddr and start sports from the beginning
+ * again.
+ */
+ ssh->portfwd_strptr++;
+ sports[n] = '\0';
+ strcpy(saddr, sports);
+ n = 0;
+ }
+ if (n < 255) sports[n++] = *ssh->portfwd_strptr++;
+ }
sports[n] = 0;
if (*ssh->portfwd_strptr == '\t')
ssh->portfwd_strptr++;
n = 0;
- while (*ssh->portfwd_strptr && *ssh->portfwd_strptr != ':')
- host[n++] = *ssh->portfwd_strptr++;
+ while (*ssh->portfwd_strptr && *ssh->portfwd_strptr != ':') {
+ if (n < 255) host[n++] = *ssh->portfwd_strptr++;
+ }
host[n] = 0;
if (*ssh->portfwd_strptr == ':')
ssh->portfwd_strptr++;
n = 0;
- while (*ssh->portfwd_strptr)
- dports[n++] = *ssh->portfwd_strptr++;
+ while (*ssh->portfwd_strptr) {
+ if (n < 255) dports[n++] = *ssh->portfwd_strptr++;
+ }
dports[n] = 0;
ssh->portfwd_strptr++;
dport = atoi(dports);
dserv = 0;
if (dport == 0) {
dserv = 1;
- se = getservbyname(dports, NULL);
- if (se != NULL) {
- dport = ntohs(se->s_port);
- } else {
- sprintf(buf,
- "Service lookup failed for destination port \"%s\"",
- dports);
- logevent(buf);
+ dport = net_service_lookup(dports);
+ if (!dport) {
+ logeventf(ssh, "Service lookup failed for"
+ " destination port \"%s\"", dports);
}
}
sport = atoi(sports);
sserv = 0;
if (sport == 0) {
sserv = 1;
- se = getservbyname(sports, NULL);
- if (se != NULL) {
- sport = ntohs(se->s_port);
- } else {
- sprintf(buf,
- "Service lookup failed for source port \"%s\"",
- sports);
- logevent(buf);
+ sport = net_service_lookup(sports);
+ if (!sport) {
+ logeventf(ssh, "Service lookup failed for source"
+ " port \"%s\"", sports);
}
}
if (sport && dport) {
if (type == 'L') {
- 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,
- sserv, "(", sport, sserv, ")",
- host,
- dserv ? strlen(dports) : 0, dports,
- dserv, "(", dport, dserv, ")");
- logevent(buf);
+ pfd_addforward(host, dport, *saddr ? saddr : NULL,
+ sport, ssh);
+ logeventf(ssh, "Local port %.*s%.*s%.*s%.*s%d%.*s"
+ " forwarding to %s:%.*s%.*s%d%.*s",
+ (int)(*saddr?strlen(saddr):0), *saddr?saddr:NULL,
+ (int)(*saddr?1:0), ":",
+ (int)(sserv ? strlen(sports) : 0), sports,
+ sserv, "(", sport, sserv, ")",
+ host,
+ (int)(dserv ? strlen(dports) : 0), dports,
+ dserv, "(", dport, dserv, ")");
} else {
struct ssh_rportfwd *pf;
pf = smalloc(sizeof(*pf));
strcpy(pf->dhost, host);
pf->dport = dport;
+ if (saddr) {
+ logeventf(ssh,
+ "SSH1 cannot handle source address spec \"%s:%d\"; ignoring",
+ saddr, sport);
+ }
if (add234(ssh->rportfwds, pf) != pf) {
- sprintf(buf,
- "Duplicate remote port forwarding to %s:%d",
- host, dport);
- logevent(buf);
+ logeventf(ssh,
+ "Duplicate remote port forwarding to %s:%d",
+ host, dport);
sfree(pf);
} else {
- sprintf(buf, "Requesting remote port %.*s%.*s%d%.*s"
- " forward to %s:%.*s%.*s%d%.*s",
- sserv ? strlen(sports) : 0, sports,
- sserv, "(", sport, sserv, ")",
- host,
- dserv ? strlen(dports) : 0, dports,
- dserv, "(", dport, dserv, ")");
- logevent(buf);
+ logeventf(ssh, "Requesting remote port %.*s%.*s%d%.*s"
+ " forward to %s:%.*s%.*s%d%.*s",
+ (int)(sserv ? strlen(sports) : 0), sports,
+ sserv, "(", sport, sserv, ")",
+ host,
+ (int)(dserv ? strlen(dports) : 0), dports,
+ dserv, "(", dport, dserv, ")");
send_packet(ssh, SSH1_CMSG_PORT_FORWARD_REQUEST,
PKT_INT, sport,
PKT_STR, host,
} 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");
} else if (ssh->pktin.type == SSH1_MSG_CHANNEL_OPEN_FAILURE) {
unsigned int remoteid = GET_32BIT(ssh->pktin.body);
- unsigned int localid = GET_32BIT(ssh->pktin.body+4);
struct ssh_channel *c;
c = find234(ssh->channels, &remoteid, ssh_channelfind);
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 {
*/
static int in_commasep_string(char *needle, char *haystack, int haylen)
{
- int needlen = strlen(needle);
+ int needlen;
+ if (!needle || !haystack) /* protect against null pointers */
+ return 0;
+ needlen = strlen(needle);
while (1) {
/*
* Is it at the start of the string?
if (!ispkt)
crWaitUntil(ispkt);
- sha_string(&ssh->exhash, ssh->pktin.data + 5, ssh->pktin.length - 5);
+ if (ssh->pktin.length > 5)
+ sha_string(&ssh->exhash, ssh->pktin.data + 5, ssh->pktin.length - 5);
/*
* Now examine the other side's KEXINIT to see what we're up
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 ? str : "(null)"));
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 ? str : "(null)"));
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);
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);
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);
}
ssh2_mkkey(ssh,s->K,s->exchange_hash,ssh->v2_session_id,'F',keyspace);
ssh->scmac->setkey(ssh->sc_mac_ctx, keyspace);
}
- {
- char buf[256];
- sprintf(buf, "Initialised %.200s client->server encryption",
- ssh->cscipher->text_name);
- logevent(buf);
- 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);
- }
- }
-
+ logeventf(ssh, "Initialised %.200s client->server encryption",
+ ssh->cscipher->text_name);
+ logeventf(ssh, "Initialised %.200s server->client encryption",
+ ssh->sccipher->text_name);
+ if (ssh->cscomp->text_name)
+ logeventf(ssh, "Initialised %s compression",
+ ssh->cscomp->text_name);
+ if (ssh->sccomp->text_name)
+ logeventf(ssh, "Initialised %s decompression",
+ ssh->sccomp->text_name);
/*
* If this is the first key exchange phase, we must pass the
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;
}
} while (ret == 0);
if (ret < 0)
cleanup_exit(0);
+ c_write_str(ssh, "\r\n");
}
- c_write_str(ssh, "\r\n");
s->username[strcspn(s->username, "\n\r")] = '\0';
} else {
- char stuff[200];
+ char *stuff;
strncpy(s->username, cfg.username, sizeof(s->username));
s->username[sizeof(s->username)-1] = '\0';
if ((flags & FLAG_VERBOSE) || (flags & FLAG_INTERACTIVE)) {
- sprintf(stuff, "Using username \"%s\".\r\n", s->username);
+ stuff = dupprintf("Using username \"%s\".\r\n", s->username);
c_write_str(ssh, stuff);
+ sfree(stuff);
}
}
s->got_username = TRUE;
/* 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, "Reading private key file \"%.150s\"", cfg.keyfile);
keytype = key_type(cfg.keyfile);
if (keytype == SSH_KEYTYPE_SSH2) {
s->publickey_blob =
ssh2_userkey_loadpub(cfg.keyfile, NULL,
&s->publickey_bloblen);
} else {
- char msgbuf[256];
- logeventf("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));
+ char *msgbuf;
+ logeventf(ssh, "Unable to use this key file (%s)",
+ key_type_to_str(keytype));
+ msgbuf = dupprintf("Unable to use key file \"%.150s\""
+ " (%s)\r\n", cfg.keyfile,
+ key_type_to_str(keytype));
c_write_str(ssh, msgbuf);
+ sfree(msgbuf);
s->publickey_blob = NULL;
}
} else
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;
}
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 (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;
}
char type;
int n;
int sport,dport,sserv,dserv;
- char sports[256], dports[256], host[256];
- char buf[1024];
- struct servent *se;
+ char sports[256], dports[256], saddr[256], host[256];
ssh->rportfwds = newtree234(ssh_rportcmp_ssh2);
/* Add port forwardings. */
ssh->portfwd_strptr = cfg.portfwd;
while (*ssh->portfwd_strptr) {
type = *ssh->portfwd_strptr++;
+ saddr[0] = '\0';
n = 0;
- while (*ssh->portfwd_strptr && *ssh->portfwd_strptr != '\t')
- sports[n++] = *ssh->portfwd_strptr++;
+ while (*ssh->portfwd_strptr && *ssh->portfwd_strptr != '\t') {
+ if (*ssh->portfwd_strptr == ':') {
+ /*
+ * We've seen a colon in the middle of the
+ * source port number. This means that
+ * everything we've seen until now is the
+ * source _address_, so we'll move it into
+ * saddr and start sports from the beginning
+ * again.
+ */
+ ssh->portfwd_strptr++;
+ sports[n] = '\0';
+ strcpy(saddr, sports);
+ n = 0;
+ }
+ if (n < 255) sports[n++] = *ssh->portfwd_strptr++;
+ }
sports[n] = 0;
if (*ssh->portfwd_strptr == '\t')
ssh->portfwd_strptr++;
n = 0;
- while (*ssh->portfwd_strptr && *ssh->portfwd_strptr != ':')
- host[n++] = *ssh->portfwd_strptr++;
+ while (*ssh->portfwd_strptr && *ssh->portfwd_strptr != ':') {
+ if (n < 255) host[n++] = *ssh->portfwd_strptr++;
+ }
host[n] = 0;
if (*ssh->portfwd_strptr == ':')
ssh->portfwd_strptr++;
n = 0;
- while (*ssh->portfwd_strptr)
- dports[n++] = *ssh->portfwd_strptr++;
+ while (*ssh->portfwd_strptr) {
+ if (n < 255) dports[n++] = *ssh->portfwd_strptr++;
+ }
dports[n] = 0;
ssh->portfwd_strptr++;
dport = atoi(dports);
dserv = 0;
if (dport == 0) {
dserv = 1;
- se = getservbyname(dports, NULL);
- if (se != NULL) {
- dport = ntohs(se->s_port);
- } else {
- sprintf(buf,
- "Service lookup failed for destination port \"%s\"",
- dports);
- logevent(buf);
+ dport = net_service_lookup(dports);
+ if (!dport) {
+ logeventf(ssh, "Service lookup failed for destination"
+ " port \"%s\"", dports);
}
}
sport = atoi(sports);
sserv = 0;
if (sport == 0) {
sserv = 1;
- se = getservbyname(sports, NULL);
- if (se != NULL) {
- sport = ntohs(se->s_port);
- } else {
- sprintf(buf,
- "Service lookup failed for source port \"%s\"",
- sports);
- logevent(buf);
+ sport = net_service_lookup(sports);
+ if (!sport) {
+ logeventf(ssh, "Service lookup failed for source"
+ " port \"%s\"", sports);
}
}
if (sport && dport) {
if (type == 'L') {
- 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,
- sserv, "(", sport, sserv, ")",
- host,
- dserv ? strlen(dports) : 0, dports,
- dserv, "(", dport, dserv, ")");
- logevent(buf);
+ pfd_addforward(host, dport, *saddr ? saddr : NULL,
+ sport, ssh);
+ logeventf(ssh, "Local port %.*s%.*s%.*s%.*s%d%.*s"
+ " forwarding to %s:%.*s%.*s%d%.*s",
+ (int)(*saddr?strlen(saddr):0), *saddr?saddr:NULL,
+ (int)(*saddr?1:0), ":",
+ (int)(sserv ? strlen(sports) : 0), sports,
+ sserv, "(", sport, sserv, ")",
+ host,
+ (int)(dserv ? strlen(dports) : 0), dports,
+ dserv, "(", dport, dserv, ")");
} else {
struct ssh_rportfwd *pf;
pf = smalloc(sizeof(*pf));
pf->dport = dport;
pf->sport = sport;
if (add234(ssh->rportfwds, pf) != pf) {
- sprintf(buf,
- "Duplicate remote port forwarding to %s:%d",
- host, dport);
- logevent(buf);
+ logeventf(ssh, "Duplicate remote port forwarding"
+ " to %s:%d", host, dport);
sfree(pf);
} else {
- sprintf(buf, "Requesting remote port %.*s%.*s%d%.*s"
- " forward to %s:%.*s%.*s%d%.*s",
- sserv ? strlen(sports) : 0, sports,
- sserv, "(", sport, sserv, ")",
- host,
- dserv ? strlen(dports) : 0, dports,
- dserv, "(", dport, dserv, ")");
- logevent(buf);
+ logeventf(ssh, "Requesting remote port "
+ "%.*s%.*s%.*s%.*s%d%.*s"
+ " forward to %s:%.*s%.*s%d%.*s",
+ (int)(*saddr?strlen(saddr):0),
+ *saddr?saddr:NULL,
+ (int)(*saddr?1:0), ":",
+ (int)(sserv ? strlen(sports) : 0), sports,
+ sserv, "(", sport, sserv, ")",
+ host,
+ (int)(dserv ? strlen(dports) : 0), dports,
+ dserv, "(", dport, dserv, ")");
ssh2_pkt_init(ssh, SSH2_MSG_GLOBAL_REQUEST);
ssh2_pkt_addstring(ssh, "tcpip-forward");
ssh2_pkt_addbool(ssh, 1);/* want reply */
+ if (*saddr)
+ ssh2_pkt_addstring(ssh, saddr);
if (cfg.rport_acceptall)
ssh2_pkt_addstring(ssh, "0.0.0.0");
else
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");
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. */
} else {
char *e = pfd_newconnect(&c->u.pfd.s, realpf->dhost,
realpf->dport, c);
- char buf[1024];
- sprintf(buf, "Received remote port open request for %s:%d",
- realpf->dhost, realpf->dport);
- logevent(buf);
+ logeventf(ssh, "Received remote port open request"
+ " for %s:%d", realpf->dhost, realpf->dport);
if (e != NULL) {
- sprintf(buf, "Port open failed: %s", e);
- logevent(buf);
+ logeventf(ssh, "Port open failed: %s", e);
error = "Port open failed";
} else {
logevent("Forwarded port opened successfully");
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->sccipher = NULL;
ssh->sc_cipher_ctx = NULL;
ssh->csmac = NULL;
- ssh->sc_mac_ctx = NULL;
+ ssh->cs_mac_ctx = NULL;
ssh->scmac = NULL;
ssh->sc_mac_ctx = NULL;
ssh->cscomp = NULL;
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->fallback_cmd = 0;
ssh->pkt_ctx = 0;
ssh->x11auth = NULL;
+ ssh->v1_compressing = FALSE;
ssh->v2_outgoing_sequence = 0;
ssh->ssh1_rdpkt_crstate = 0;
ssh->ssh2_rdpkt_crstate = 0;
ssh->do_ssh1_login_state = NULL;
ssh->do_ssh2_transport_state = NULL;
ssh->do_ssh2_authconn_state = NULL;
+ ssh->mainchan = NULL;
+ ssh->throttled_all = 0;
+ ssh->v1_stdout_throttling = 0;
*backend_handle = ssh;
{
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);
- logevent(buf);
+ logeventf(ssh, "Opening forwarded connection to %s:%d", hostname, port);
if (ssh->version == 1) {
send_packet(ssh, SSH1_MSG_PORT_OPEN,
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_sendok,
ssh_ldisc,
ssh_provide_ldisc,
+ ssh_provide_logctx,
ssh_unthrottle,
22
};
projects / u / mdw / putty / blobdiff