+#include <stdio.h>
#include <string.h>
#include "puttymem.h"
+#include "tree234.h"
+#include "network.h"
+#include "int64.h"
+#include "misc.h"
+
+struct ssh_channel;
+typedef struct ssh_tag *Ssh;
+
+extern int sshfwd_write(struct ssh_channel *c, char *, int);
+extern void sshfwd_write_eof(struct ssh_channel *c);
+extern void sshfwd_unclean_close(struct ssh_channel *c, const char *err);
+extern void sshfwd_unthrottle(struct ssh_channel *c, int bufsize);
+Conf *sshfwd_get_conf(struct ssh_channel *c);
+void sshfwd_x11_sharing_handover(struct ssh_channel *c,
+ void *share_cs, void *share_chan,
+ const char *peer_addr, int peer_port,
+ int endian, int protomajor, int protominor,
+ const void *initial_data, int initial_len);
+void sshfwd_x11_is_local(struct ssh_channel *c);
+
+extern Socket ssh_connection_sharing_init(const char *host, int port,
+ Conf *conf, Ssh ssh, void **state);
+int ssh_share_test_for_upstream(const char *host, int port, Conf *conf);
+void share_got_pkt_from_server(void *ctx, int type,
+ unsigned char *pkt, int pktlen);
+void share_activate(void *state, const char *server_verstring);
+void sharestate_free(void *state);
+int share_ndownstreams(void *state);
+
+void ssh_connshare_log(Ssh ssh, int event, const char *logtext,
+ const char *ds_err, const char *us_err);
+unsigned ssh_alloc_sharing_channel(Ssh ssh, void *sharing_ctx);
+void ssh_delete_sharing_channel(Ssh ssh, unsigned localid);
+int ssh_alloc_sharing_rportfwd(Ssh ssh, const char *shost, int sport,
+ void *share_ctx);
+void ssh_sharing_queue_global_request(Ssh ssh, void *share_ctx);
+struct X11FakeAuth *ssh_sharing_add_x11_display(Ssh ssh, int authtype,
+ void *share_cs,
+ void *share_chan);
+void ssh_sharing_remove_x11_display(Ssh ssh, struct X11FakeAuth *auth);
+void ssh_send_packet_from_downstream(Ssh ssh, unsigned id, int type,
+ const void *pkt, int pktlen,
+ const char *additional_log_text);
+void ssh_sharing_downstream_connected(Ssh ssh, unsigned id,
+ const char *peerinfo);
+void ssh_sharing_downstream_disconnected(Ssh ssh, unsigned id);
+void ssh_sharing_logf(Ssh ssh, unsigned id, const char *logfmt, ...);
+int ssh_agent_forwarding_permitted(Ssh ssh);
+void share_setup_x11_channel(void *csv, void *chanv,
+ unsigned upstream_id, unsigned server_id,
+ unsigned server_currwin, unsigned server_maxpkt,
+ unsigned client_adjusted_window,
+ const char *peer_addr, int peer_port, int endian,
+ int protomajor, int protominor,
+ const void *initial_data, int initial_len);
/*
* Useful thing.
Bignum modulus;
Bignum exponent;
Bignum private_exponent;
+ Bignum p;
+ Bignum q;
+ Bignum iqmp;
#endif
char *comment;
};
-struct RSAAux {
+struct dss_key {
+ Bignum p, q, g, y, x;
+};
+
+struct ec_curve;
+
+struct ec_point {
+ const struct ec_curve *curve;
+ Bignum x, y;
+ Bignum z; /* Jacobian denominator */
+ unsigned char infinity;
+};
+
+void ec_point_free(struct ec_point *point);
+
+/* Weierstrass form curve */
+struct ec_wcurve
+{
+ Bignum a, b, n;
+ struct ec_point G;
+};
+
+/* Montgomery form curve */
+struct ec_mcurve
+{
+ Bignum a, b;
+ struct ec_point G;
+};
+
+/* Edwards form curve */
+struct ec_ecurve
+{
+ Bignum l, d;
+ struct ec_point B;
+};
+
+struct ec_curve {
+ enum { EC_WEIERSTRASS, EC_MONTGOMERY, EC_EDWARDS } type;
+ /* 'name' is the identifier of the curve when it has to appear in
+ * wire protocol encodings, as it does in e.g. the public key and
+ * signature formats for NIST curves. Curves which do not format
+ * their keys or signatures in this way just have name==NULL.
+ *
+ * 'textname' is non-NULL for all curves, and is a human-readable
+ * identification suitable for putting in log messages. */
+ const char *name, *textname;
+ unsigned int fieldBits;
Bignum p;
- Bignum q;
- Bignum iqmp;
+ union {
+ struct ec_wcurve w;
+ struct ec_mcurve m;
+ struct ec_ecurve e;
+ };
+};
+
+const struct ssh_signkey *ec_alg_by_oid(int len, const void *oid,
+ const struct ec_curve **curve);
+const unsigned char *ec_alg_oid(const struct ssh_signkey *alg, int *oidlen);
+extern const int ec_nist_curve_lengths[], n_ec_nist_curve_lengths;
+int ec_nist_alg_and_curve_by_bits(int bits,
+ const struct ec_curve **curve,
+ const struct ssh_signkey **alg);
+int ec_ed_alg_and_curve_by_bits(int bits,
+ const struct ec_curve **curve,
+ const struct ssh_signkey **alg);
+
+struct ssh_signkey;
+
+struct ec_key {
+ const struct ssh_signkey *signalg;
+ struct ec_point publicKey;
+ Bignum privateKey;
};
-int makekey(unsigned char *data, struct RSAKey *result,
- unsigned char **keystr, int order);
-int makeprivate(unsigned char *data, struct RSAKey *result);
-void rsaencrypt(unsigned char *data, int length, struct RSAKey *key);
+struct ec_point *ec_public(const Bignum privateKey, const struct ec_curve *curve);
+
+int makekey(const unsigned char *data, int len, struct RSAKey *result,
+ const unsigned char **keystr, int order);
+int makeprivate(const unsigned char *data, int len, struct RSAKey *result);
+int rsaencrypt(unsigned char *data, int length, struct RSAKey *key);
Bignum rsadecrypt(Bignum input, struct RSAKey *key);
void rsasign(unsigned char *data, int length, struct RSAKey *key);
void rsasanitise(struct RSAKey *key);
int rsastr_len(struct RSAKey *key);
void rsastr_fmt(char *str, struct RSAKey *key);
void rsa_fingerprint(char *str, int len, struct RSAKey *key);
+int rsa_verify(struct RSAKey *key);
+unsigned char *rsa_public_blob(struct RSAKey *key, int *len);
+int rsa_public_blob_len(void *data, int maxlen);
void freersakey(struct RSAKey *key);
-typedef unsigned int word32;
+#ifndef PUTTY_UINT32_DEFINED
+/* This makes assumptions about the int type. */
typedef unsigned int uint32;
+#define PUTTY_UINT32_DEFINED
+#endif
+typedef uint32 word32;
+
+unsigned long crc32_compute(const void *s, size_t len);
+unsigned long crc32_update(unsigned long crc_input, const void *s, size_t len);
+
+/* SSH CRC compensation attack detector */
+void *crcda_make_context(void);
+void crcda_free_context(void *handle);
+int detect_attack(void *handle, unsigned char *buf, uint32 len,
+ unsigned char *IV);
-unsigned long crc32(const void *s, size_t len);
+/*
+ * SSH2 RSA key exchange functions
+ */
+struct ssh_hash;
+void *ssh_rsakex_newkey(char *data, int len);
+void ssh_rsakex_freekey(void *key);
+int ssh_rsakex_klen(void *key);
+void ssh_rsakex_encrypt(const struct ssh_hash *h, unsigned char *in, int inlen,
+ unsigned char *out, int outlen,
+ void *key);
+
+/*
+ * SSH2 ECDH key exchange functions
+ */
+struct ssh_kex;
+const char *ssh_ecdhkex_curve_textname(const struct ssh_kex *kex);
+void *ssh_ecdhkex_newkey(const struct ssh_kex *kex);
+void ssh_ecdhkex_freekey(void *key);
+char *ssh_ecdhkex_getpublic(void *key, int *len);
+Bignum ssh_ecdhkex_getkey(void *key, char *remoteKey, int remoteKeyLen);
+
+/*
+ * Helper function for k generation in DSA, reused in ECDSA
+ */
+Bignum *dss_gen_k(const char *id_string, Bignum modulus, Bignum private_key,
+ unsigned char *digest, int digest_len);
typedef struct {
uint32 h[4];
void MD5Init(struct MD5Context *context);
void MD5Update(struct MD5Context *context, unsigned char const *buf,
- unsigned len);
+ unsigned len);
void MD5Final(unsigned char digest[16], struct MD5Context *context);
+void MD5Simple(void const *p, unsigned len, unsigned char output[16]);
+
+void *hmacmd5_make_context(void *);
+void hmacmd5_free_context(void *handle);
+void hmacmd5_key(void *handle, void const *key, int len);
+void hmacmd5_do_hmac(void *handle, unsigned char const *blk, int len,
+ unsigned char *hmac);
typedef struct {
uint32 h[5];
int blkused;
uint32 lenhi, lenlo;
} SHA_State;
+void SHA_Init(SHA_State * s);
+void SHA_Bytes(SHA_State * s, const void *p, int len);
+void SHA_Final(SHA_State * s, unsigned char *output);
+void SHA_Simple(const void *p, int len, unsigned char *output);
+
+void hmac_sha1_simple(void *key, int keylen, void *data, int datalen,
+ unsigned char *output);
+typedef struct {
+ uint32 h[8];
+ unsigned char block[64];
+ int blkused;
+ uint32 lenhi, lenlo;
+} SHA256_State;
+void SHA256_Init(SHA256_State * s);
+void SHA256_Bytes(SHA256_State * s, const void *p, int len);
+void SHA256_Final(SHA256_State * s, unsigned char *output);
+void SHA256_Simple(const void *p, int len, unsigned char *output);
-void SHA_Init(SHA_State *s);
-void SHA_Bytes(SHA_State *s, void *p, int len);
-void SHA_Final(SHA_State *s, unsigned char *output);
-void SHA_Simple(void *p, int len, unsigned char *output);
+typedef struct {
+ uint64 h[8];
+ unsigned char block[128];
+ int blkused;
+ uint32 len[4];
+} SHA512_State;
+#define SHA384_State SHA512_State
+void SHA512_Init(SHA512_State * s);
+void SHA512_Bytes(SHA512_State * s, const void *p, int len);
+void SHA512_Final(SHA512_State * s, unsigned char *output);
+void SHA512_Simple(const void *p, int len, unsigned char *output);
+void SHA384_Init(SHA384_State * s);
+#define SHA384_Bytes(s, p, len) SHA512_Bytes(s, p, len)
+void SHA384_Final(SHA384_State * s, unsigned char *output);
+void SHA384_Simple(const void *p, int len, unsigned char *output);
+struct ssh_mac;
struct ssh_cipher {
- void (*sesskey)(unsigned char *key); /* for ssh 1 */
- void (*setcsiv)(unsigned char *key); /* for ssh 2 */
- void (*setcskey)(unsigned char *key); /* for ssh 2 */
- void (*setsciv)(unsigned char *key); /* for ssh 2 */
- void (*setsckey)(unsigned char *key); /* for ssh 2 */
- void (*encrypt)(unsigned char *blk, int len);
- void (*decrypt)(unsigned char *blk, int len);
- char *name;
+ void *(*make_context)(void);
+ void (*free_context)(void *);
+ void (*sesskey) (void *, unsigned char *key); /* for SSH-1 */
+ void (*encrypt) (void *, unsigned char *blk, int len);
+ void (*decrypt) (void *, unsigned char *blk, int len);
int blksize;
- int keylen;
+ const char *text_name;
+};
+
+struct ssh2_cipher {
+ void *(*make_context)(void);
+ void (*free_context)(void *);
+ void (*setiv) (void *, unsigned char *key); /* for SSH-2 */
+ void (*setkey) (void *, unsigned char *key);/* for SSH-2 */
+ void (*encrypt) (void *, unsigned char *blk, int len);
+ void (*decrypt) (void *, unsigned char *blk, int len);
+ /* Ignored unless SSH_CIPHER_SEPARATE_LENGTH flag set */
+ void (*encrypt_length) (void *, unsigned char *blk, int len, unsigned long seq);
+ void (*decrypt_length) (void *, unsigned char *blk, int len, unsigned long seq);
+ const char *name;
+ int blksize;
+ /* real_keybits is the number of bits of entropy genuinely used by
+ * the cipher scheme; it's used for deciding how big a
+ * Diffie-Hellman group is needed to exchange a key for the
+ * cipher. */
+ int real_keybits;
+ /* padded_keybytes is the number of bytes of key data expected as
+ * input to the setkey function; it's used for deciding how much
+ * data needs to be generated from the post-kex generation of key
+ * material. In a sensible cipher which uses all its key bytes for
+ * real work, this will just be real_keybits/8, but in DES-type
+ * ciphers which ignore one bit in each byte, it'll be slightly
+ * different. */
+ int padded_keybytes;
+ unsigned int flags;
+#define SSH_CIPHER_IS_CBC 1
+#define SSH_CIPHER_SEPARATE_LENGTH 2
+ const char *text_name;
+ /* If set, this takes priority over other MAC. */
+ const struct ssh_mac *required_mac;
+};
+
+struct ssh2_ciphers {
+ int nciphers;
+ const struct ssh2_cipher *const *list;
};
struct ssh_mac {
- void (*setcskey)(unsigned char *key);
- void (*setsckey)(unsigned char *key);
- void (*generate)(unsigned char *blk, int len, unsigned long seq);
- int (*verify)(unsigned char *blk, int len, unsigned long seq);
- char *name;
- int len;
+ /* Passes in the cipher context */
+ void *(*make_context)(void *);
+ void (*free_context)(void *);
+ void (*setkey) (void *, unsigned char *key);
+ /* whole-packet operations */
+ void (*generate) (void *, unsigned char *blk, int len, unsigned long seq);
+ int (*verify) (void *, unsigned char *blk, int len, unsigned long seq);
+ /* partial-packet operations */
+ void (*start) (void *);
+ void (*bytes) (void *, unsigned char const *, int);
+ void (*genresult) (void *, unsigned char *);
+ int (*verresult) (void *, unsigned char const *);
+ const char *name, *etm_name;
+ int len, keylen;
+ const char *text_name;
};
+struct ssh_hash {
+ void *(*init)(void); /* also allocates context */
+ void *(*copy)(const void *);
+ void (*bytes)(void *, const void *, int);
+ void (*final)(void *, unsigned char *); /* also frees context */
+ void (*free)(void *);
+ int hlen; /* output length in bytes */
+ const char *text_name;
+};
+
struct ssh_kex {
- /*
- * Plugging in another KEX algorithm requires structural chaos,
- * so it's hard to abstract them into nice little structures
- * like this. Hence, for the moment, this is just a
- * placeholder. I claim justification in the fact that OpenSSH
- * does this too :-)
- */
- char *name;
+ const char *name, *groupname;
+ enum { KEXTYPE_DH, KEXTYPE_RSA, KEXTYPE_ECDH } main_type;
+ const struct ssh_hash *hash;
+ const void *extra; /* private to the kex methods */
+};
+
+struct ssh_kexes {
+ int nkexes;
+ const struct ssh_kex *const *list;
};
struct ssh_signkey {
- void *(*newkey)(char *data, int len);
- void (*freekey)(void *key);
- char *(*fmtkey)(void *key);
- char *(*fingerprint)(void *key);
- int (*verifysig)(void *key, char *sig, int siglen,
- char *data, int datalen);
- int (*sign)(void *key, char *sig, int siglen,
- char *data, int datalen);
- char *name;
- char *keytype; /* for host key cache */
+ void *(*newkey) (const struct ssh_signkey *self,
+ const char *data, int len);
+ void (*freekey) (void *key);
+ char *(*fmtkey) (void *key);
+ unsigned char *(*public_blob) (void *key, int *len);
+ unsigned char *(*private_blob) (void *key, int *len);
+ void *(*createkey) (const struct ssh_signkey *self,
+ const unsigned char *pub_blob, int pub_len,
+ const unsigned char *priv_blob, int priv_len);
+ void *(*openssh_createkey) (const struct ssh_signkey *self,
+ const unsigned char **blob, int *len);
+ int (*openssh_fmtkey) (void *key, unsigned char *blob, int len);
+ /* OpenSSH private key blobs, as created by openssh_fmtkey and
+ * consumed by openssh_createkey, always (at least so far...) take
+ * the form of a number of SSH-2 strings / mpints concatenated
+ * end-to-end. Because the new-style OpenSSH private key format
+ * stores those blobs without a containing string wrapper, we need
+ * to know how many strings each one consists of, so that we can
+ * skip over the right number to find the next key in the file.
+ * openssh_private_npieces gives that information. */
+ int openssh_private_npieces;
+ int (*pubkey_bits) (const struct ssh_signkey *self,
+ const void *blob, int len);
+ int (*verifysig) (void *key, const char *sig, int siglen,
+ const char *data, int datalen);
+ unsigned char *(*sign) (void *key, const char *data, int datalen,
+ int *siglen);
+ const char *name;
+ const char *keytype; /* for host key cache */
+ const void *extra; /* private to the public key methods */
};
struct ssh_compress {
- char *name;
- void (*compress_init)(void);
- int (*compress)(unsigned char *block, int len,
- unsigned char **outblock, int *outlen);
- void (*decompress_init)(void);
- int (*decompress)(unsigned char *block, int len,
- unsigned char **outblock, int *outlen);
+ const char *name;
+ /* For zlib@openssh.com: if non-NULL, this name will be considered once
+ * userauth has completed successfully. */
+ const char *delayed_name;
+ void *(*compress_init) (void);
+ void (*compress_cleanup) (void *);
+ int (*compress) (void *, unsigned char *block, int len,
+ unsigned char **outblock, int *outlen);
+ void *(*decompress_init) (void);
+ void (*decompress_cleanup) (void *);
+ int (*decompress) (void *, unsigned char *block, int len,
+ unsigned char **outblock, int *outlen);
+ int (*disable_compression) (void *);
+ const char *text_name;
+};
+
+struct ssh2_userkey {
+ const struct ssh_signkey *alg; /* the key algorithm */
+ void *data; /* the key data */
+ char *comment; /* the key comment */
};
+/* The maximum length of any hash algorithm used in kex. (bytes) */
+#define SSH2_KEX_MAX_HASH_LEN (64) /* SHA-512 */
+
+extern const struct ssh_cipher ssh_3des;
+extern const struct ssh_cipher ssh_des;
+extern const struct ssh_cipher ssh_blowfish_ssh1;
+extern const struct ssh2_ciphers ssh2_3des;
+extern const struct ssh2_ciphers ssh2_des;
+extern const struct ssh2_ciphers ssh2_aes;
+extern const struct ssh2_ciphers ssh2_blowfish;
+extern const struct ssh2_ciphers ssh2_arcfour;
+extern const struct ssh2_ciphers ssh2_ccp;
+extern const struct ssh_hash ssh_sha1;
+extern const struct ssh_hash ssh_sha256;
+extern const struct ssh_hash ssh_sha384;
+extern const struct ssh_hash ssh_sha512;
+extern const struct ssh_kexes ssh_diffiehellman_group1;
+extern const struct ssh_kexes ssh_diffiehellman_group14;
+extern const struct ssh_kexes ssh_diffiehellman_gex;
+extern const struct ssh_kexes ssh_rsa_kex;
+extern const struct ssh_kexes ssh_ecdh_kex;
+extern const struct ssh_signkey ssh_dss;
+extern const struct ssh_signkey ssh_rsa;
+extern const struct ssh_signkey ssh_ecdsa_ed25519;
+extern const struct ssh_signkey ssh_ecdsa_nistp256;
+extern const struct ssh_signkey ssh_ecdsa_nistp384;
+extern const struct ssh_signkey ssh_ecdsa_nistp521;
+extern const struct ssh_mac ssh_hmac_md5;
+extern const struct ssh_mac ssh_hmac_sha1;
+extern const struct ssh_mac ssh_hmac_sha1_buggy;
+extern const struct ssh_mac ssh_hmac_sha1_96;
+extern const struct ssh_mac ssh_hmac_sha1_96_buggy;
+extern const struct ssh_mac ssh_hmac_sha256;
+
+void *aes_make_context(void);
+void aes_free_context(void *handle);
+void aes128_key(void *handle, unsigned char *key);
+void aes192_key(void *handle, unsigned char *key);
+void aes256_key(void *handle, unsigned char *key);
+void aes_iv(void *handle, unsigned char *iv);
+void aes_ssh2_encrypt_blk(void *handle, unsigned char *blk, int len);
+void aes_ssh2_decrypt_blk(void *handle, unsigned char *blk, int len);
+
+/*
+ * PuTTY version number formatted as an SSH version string.
+ */
+extern const char sshver[];
+
+/*
+ * Gross hack: pscp will try to start SFTP but fall back to scp1 if
+ * that fails. This variable is the means by which scp.c can reach
+ * into the SSH code and find out which one it got.
+ */
+extern int ssh_fallback_cmd(void *handle);
+
#ifndef MSCRYPTOAPI
-void SHATransform(word32 *digest, word32 *data);
+void SHATransform(word32 * digest, word32 * data);
#endif
int random_byte(void);
void random_add_noise(void *noise, int length);
void random_add_heavynoise(void *noise, int length);
-void logevent (char *);
+void logevent(void *, const char *);
+
+struct PortForwarding;
+
+/* Allocate and register a new channel for port forwarding */
+void *new_sock_channel(void *handle, struct PortForwarding *pf);
+void ssh_send_port_open(void *channel, const char *hostname, int port,
+ const char *org);
+
+/* Exports from portfwd.c */
+extern char *pfd_connect(struct PortForwarding **pf, char *hostname, int port,
+ void *c, Conf *conf, int addressfamily);
+extern void pfd_close(struct PortForwarding *);
+extern int pfd_send(struct PortForwarding *, char *data, int len);
+extern void pfd_send_eof(struct PortForwarding *);
+extern void pfd_confirm(struct PortForwarding *);
+extern void pfd_unthrottle(struct PortForwarding *);
+extern void pfd_override_throttle(struct PortForwarding *, int enable);
+struct PortListener;
+/* desthost == NULL indicates dynamic (SOCKS) port forwarding */
+extern char *pfl_listen(char *desthost, int destport, char *srcaddr,
+ int port, void *backhandle, Conf *conf,
+ struct PortListener **pl, int address_family);
+extern void pfl_terminate(struct PortListener *);
+
+/* Exports from x11fwd.c */
+enum {
+ X11_TRANS_IPV4 = 0, X11_TRANS_IPV6 = 6, X11_TRANS_UNIX = 256
+};
+struct X11Display {
+ /* Broken-down components of the display name itself */
+ int unixdomain;
+ char *hostname;
+ int displaynum;
+ int screennum;
+ /* OSX sometimes replaces all the above with a full Unix-socket pathname */
+ char *unixsocketpath;
+
+ /* PuTTY networking SockAddr to connect to the display, and associated
+ * gubbins */
+ SockAddr addr;
+ int port;
+ char *realhost;
+
+ /* Our local auth details for talking to the real X display. */
+ int localauthproto;
+ unsigned char *localauthdata;
+ int localauthdatalen;
+};
+struct X11FakeAuth {
+ /* Auth details we invented for a virtual display on the SSH server. */
+ int proto;
+ unsigned char *data;
+ int datalen;
+ char *protoname;
+ char *datastring;
+
+ /* The encrypted form of the first block, in XDM-AUTHORIZATION-1.
+ * Used as part of the key when these structures are organised
+ * into a tree. See x11_invent_fake_auth for explanation. */
+ unsigned char *xa1_firstblock;
+
+ /*
+ * Used inside x11fwd.c to remember recently seen
+ * XDM-AUTHORIZATION-1 strings, to avoid replay attacks.
+ */
+ tree234 *xdmseen;
+
+ /*
+ * What to do with an X connection matching this auth data.
+ */
+ struct X11Display *disp;
+ void *share_cs, *share_chan;
+};
+void *x11_make_greeting(int endian, int protomajor, int protominor,
+ int auth_proto, const void *auth_data, int auth_len,
+ const char *peer_ip, int peer_port,
+ int *outlen);
+int x11_authcmp(void *av, void *bv); /* for putting X11FakeAuth in a tree234 */
+/*
+ * x11_setup_display() parses the display variable and fills in an
+ * X11Display structure. Some remote auth details are invented;
+ * the supplied authtype parameter configures the preferred
+ * authorisation protocol to use at the remote end. The local auth
+ * details are looked up by calling platform_get_x11_auth.
+ */
+extern struct X11Display *x11_setup_display(const char *display, Conf *);
+void x11_free_display(struct X11Display *disp);
+struct X11FakeAuth *x11_invent_fake_auth(tree234 *t, int authtype);
+void x11_free_fake_auth(struct X11FakeAuth *auth);
+struct X11Connection; /* opaque outside x11fwd.c */
+struct X11Connection *x11_init(tree234 *authtree, void *, const char *, int);
+extern void x11_close(struct X11Connection *);
+extern int x11_send(struct X11Connection *, char *, int);
+extern void x11_send_eof(struct X11Connection *s);
+extern void x11_unthrottle(struct X11Connection *s);
+extern void x11_override_throttle(struct X11Connection *s, int enable);
+char *x11_display(const char *display);
+/* Platform-dependent X11 functions */
+extern void platform_get_x11_auth(struct X11Display *display, Conf *);
+ /* examine a mostly-filled-in X11Display and fill in localauth* */
+extern const int platform_uses_x11_unix_by_default;
+ /* choose default X transport in the absence of a specified one */
+SockAddr platform_get_x11_unix_address(const char *path, int displaynum);
+ /* make up a SockAddr naming the address for displaynum */
+char *platform_get_x_display(void);
+ /* allocated local X display string, if any */
+/* Callbacks in x11.c usable _by_ platform X11 functions */
+/*
+ * This function does the job of platform_get_x11_auth, provided
+ * it is told where to find a normally formatted .Xauthority file:
+ * it opens that file, parses it to find an auth record which
+ * matches the display details in "display", and fills in the
+ * localauth fields.
+ *
+ * It is expected that most implementations of
+ * platform_get_x11_auth() will work by finding their system's
+ * .Xauthority file, adjusting the display details if necessary
+ * for local oddities like Unix-domain socket transport, and
+ * calling this function to do the rest of the work.
+ */
+void x11_get_auth_from_authfile(struct X11Display *display,
+ const char *authfilename);
+int x11_identify_auth_proto(const char *proto);
+void *x11_dehexify(const char *hex, int *outlen);
Bignum copybn(Bignum b);
Bignum bn_power_2(int n);
void bn_restore_invariant(Bignum b);
-Bignum bignum_from_short(unsigned short n);
+Bignum bignum_from_long(unsigned long n);
void freebn(Bignum b);
Bignum modpow(Bignum base, Bignum exp, Bignum mod);
Bignum modmul(Bignum a, Bignum b, Bignum mod);
+Bignum modsub(const Bignum a, const Bignum b, const Bignum n);
void decbn(Bignum n);
extern Bignum Zero, One;
-Bignum bignum_from_bytes(unsigned char *data, int nbytes);
-int ssh1_read_bignum(unsigned char *data, Bignum *result);
-int ssh1_bignum_bitcount(Bignum bn);
+Bignum bignum_from_bytes(const unsigned char *data, int nbytes);
+Bignum bignum_from_bytes_le(const unsigned char *data, int nbytes);
+Bignum bignum_random_in_range(const Bignum lower, const Bignum upper);
+int ssh1_read_bignum(const unsigned char *data, int len, Bignum * result);
+int bignum_bitcount(Bignum bn);
int ssh1_bignum_length(Bignum bn);
+int ssh2_bignum_length(Bignum bn);
int bignum_byte(Bignum bn, int i);
int bignum_bit(Bignum bn, int i);
void bignum_set_bit(Bignum bn, int i, int value);
Bignum biggcd(Bignum a, Bignum b);
unsigned short bignum_mod_short(Bignum number, unsigned short modulus);
Bignum bignum_add_long(Bignum number, unsigned long addend);
+Bignum bigadd(Bignum a, Bignum b);
+Bignum bigsub(Bignum a, Bignum b);
Bignum bigmul(Bignum a, Bignum b);
+Bignum bigmuladd(Bignum a, Bignum b, Bignum addend);
+Bignum bigdiv(Bignum a, Bignum b);
+Bignum bigmod(Bignum a, Bignum b);
Bignum modinv(Bignum number, Bignum modulus);
Bignum bignum_bitmask(Bignum number);
Bignum bignum_rshift(Bignum number, int shift);
+Bignum bignum_lshift(Bignum number, int shift);
int bignum_cmp(Bignum a, Bignum b);
char *bignum_decimal(Bignum x);
+Bignum bignum_from_decimal(const char *decimal);
+
+#ifdef DEBUG
+void diagbn(char *prefix, Bignum md);
+#endif
+
+int dh_is_gex(const struct ssh_kex *kex);
+void *dh_setup_group(const struct ssh_kex *kex);
+void *dh_setup_gex(Bignum pval, Bignum gval);
+void dh_cleanup(void *);
+Bignum dh_create_e(void *, int nbits);
+const char *dh_validate_f(void *handle, Bignum f);
+Bignum dh_find_K(void *, Bignum f);
-void dh_setup_group1(void);
-void dh_setup_group(Bignum pval, Bignum gval);
-void dh_cleanup(void);
-Bignum dh_create_e(void);
-Bignum dh_find_K(Bignum f);
+int loadrsakey(const Filename *filename, struct RSAKey *key,
+ const char *passphrase, const char **errorstr);
+int rsakey_encrypted(const Filename *filename, char **comment);
+int rsakey_pubblob(const Filename *filename, void **blob, int *bloblen,
+ char **commentptr, const char **errorstr);
+
+int saversakey(const Filename *filename, struct RSAKey *key, char *passphrase);
+
+extern int base64_decode_atom(const char *atom, unsigned char *out);
+extern int base64_lines(int datalen);
+extern void base64_encode_atom(const unsigned char *data, int n, char *out);
+extern void base64_encode(FILE *fp, const unsigned char *data, int datalen,
+ int cpl);
+
+/* ssh2_load_userkey can return this as an error */
+extern struct ssh2_userkey ssh2_wrong_passphrase;
+#define SSH2_WRONG_PASSPHRASE (&ssh2_wrong_passphrase)
+
+int ssh2_userkey_encrypted(const Filename *filename, char **comment);
+struct ssh2_userkey *ssh2_load_userkey(const Filename *filename,
+ const char *passphrase,
+ const char **errorstr);
+unsigned char *ssh2_userkey_loadpub(const Filename *filename, char **algorithm,
+ int *pub_blob_len, char **commentptr,
+ const char **errorstr);
+int ssh2_save_userkey(const Filename *filename, struct ssh2_userkey *key,
+ char *passphrase);
+const struct ssh_signkey *find_pubkey_alg(const char *name);
+const struct ssh_signkey *find_pubkey_alg_len(int namelen, const char *name);
+
+enum {
+ SSH_KEYTYPE_UNOPENABLE,
+ SSH_KEYTYPE_UNKNOWN,
+ SSH_KEYTYPE_SSH1, SSH_KEYTYPE_SSH2,
+ /*
+ * The OpenSSH key types deserve a little explanation. OpenSSH has
+ * two physical formats for private key storage: an old PEM-based
+ * one largely dictated by their use of OpenSSL and full of ASN.1,
+ * and a new one using the same private key formats used over the
+ * wire for talking to ssh-agent. The old format can only support
+ * a subset of the key types, because it needs redesign for each
+ * key type, and after a while they decided to move to the new
+ * format so as not to have to do that.
+ *
+ * On input, key files are identified as either
+ * SSH_KEYTYPE_OPENSSH_PEM or SSH_KEYTYPE_OPENSSH_NEW, describing
+ * accurately which actual format the keys are stored in.
+ *
+ * On output, however, we default to following OpenSSH's own
+ * policy of writing out PEM-style keys for maximum backwards
+ * compatibility if the key type supports it, and otherwise
+ * switching to the new format. So the formats you can select for
+ * output are SSH_KEYTYPE_OPENSSH_NEW (forcing the new format for
+ * any key type), and SSH_KEYTYPE_OPENSSH_AUTO to use the oldest
+ * format supported by whatever key type you're writing out.
+ *
+ * So we have three type codes, but only two of them usable in any
+ * given circumstance. An input key file will never be identified
+ * as AUTO, only PEM or NEW; key export UIs should not be able to
+ * select PEM, only AUTO or NEW.
+ */
+ SSH_KEYTYPE_OPENSSH_AUTO,
+ SSH_KEYTYPE_OPENSSH_PEM,
+ SSH_KEYTYPE_OPENSSH_NEW,
+ SSH_KEYTYPE_SSHCOM,
+ /*
+ * Public-key-only formats, which we still want to be able to read
+ * for various purposes.
+ */
+ SSH_KEYTYPE_SSH1_PUBLIC,
+ SSH_KEYTYPE_SSH2_PUBLIC_RFC4716,
+ SSH_KEYTYPE_SSH2_PUBLIC_OPENSSH
+};
+char *ssh1_pubkey_str(struct RSAKey *ssh1key);
+void ssh1_write_pubkey(FILE *fp, struct RSAKey *ssh1key);
+char *ssh2_pubkey_openssh_str(struct ssh2_userkey *key);
+void ssh2_write_pubkey(FILE *fp, const char *comment,
+ const void *v_pub_blob, int pub_len,
+ int keytype);
+char *ssh2_fingerprint_blob(const void *blob, int bloblen);
+char *ssh2_fingerprint(const struct ssh_signkey *alg, void *data);
+int key_type(const Filename *filename);
+const char *key_type_to_str(int type);
-int loadrsakey(char *filename, struct RSAKey *key, struct RSAAux *aux,
- char *passphrase);
-int rsakey_encrypted(char *filename, char **comment);
+int import_possible(int type);
+int import_target_type(int type);
+int import_encrypted(const Filename *filename, int type, char **comment);
+int import_ssh1(const Filename *filename, int type,
+ struct RSAKey *key, char *passphrase, const char **errmsg_p);
+struct ssh2_userkey *import_ssh2(const Filename *filename, int type,
+ char *passphrase, const char **errmsg_p);
+int export_ssh1(const Filename *filename, int type,
+ struct RSAKey *key, char *passphrase);
+int export_ssh2(const Filename *filename, int type,
+ struct ssh2_userkey *key, char *passphrase);
-int saversakey(char *filename, struct RSAKey *key, struct RSAAux *aux,
- char *passphrase);
+void des3_decrypt_pubkey(unsigned char *key, unsigned char *blk, int len);
+void des3_encrypt_pubkey(unsigned char *key, unsigned char *blk, int len);
+void des3_decrypt_pubkey_ossh(unsigned char *key, unsigned char *iv,
+ unsigned char *blk, int len);
+void des3_encrypt_pubkey_ossh(unsigned char *key, unsigned char *iv,
+ unsigned char *blk, int len);
+void aes256_encrypt_pubkey(unsigned char *key, unsigned char *blk,
+ int len);
+void aes256_decrypt_pubkey(unsigned char *key, unsigned char *blk,
+ int len);
-void des3_decrypt_pubkey(unsigned char *key,
+void des_encrypt_xdmauth(const unsigned char *key,
unsigned char *blk, int len);
-void des3_encrypt_pubkey(unsigned char *key,
+void des_decrypt_xdmauth(const unsigned char *key,
unsigned char *blk, int len);
+void openssh_bcrypt(const char *passphrase,
+ const unsigned char *salt, int saltbytes,
+ int rounds, unsigned char *out, int outbytes);
+
/*
* For progress updates in the key generation utility.
*/
-typedef void (*progfn_t)(void *param, int phase, int progress);
+#define PROGFN_INITIALISE 1
+#define PROGFN_LIN_PHASE 2
+#define PROGFN_EXP_PHASE 3
+#define PROGFN_PHASE_EXTENT 4
+#define PROGFN_READY 5
+#define PROGFN_PROGRESS 6
+typedef void (*progfn_t) (void *param, int action, int phase, int progress);
+
+int rsa_generate(struct RSAKey *key, int bits, progfn_t pfn,
+ void *pfnparam);
+int dsa_generate(struct dss_key *key, int bits, progfn_t pfn,
+ void *pfnparam);
+int ec_generate(struct ec_key *key, int bits, progfn_t pfn,
+ void *pfnparam);
+int ec_edgenerate(struct ec_key *key, int bits, progfn_t pfn,
+ void *pfnparam);
+Bignum primegen(int bits, int modulus, int residue, Bignum factor,
+ int phase, progfn_t pfn, void *pfnparam, unsigned firstbits);
+void invent_firstbits(unsigned *one, unsigned *two);
-int rsa_generate(struct RSAKey *key, struct RSAAux *aux, int bits,
- progfn_t pfn, void *pfnparam);
-Bignum primegen(int bits, int modulus, int residue,
- int phase, progfn_t pfn, void *pfnparam);
/*
* zlib compression.
*/
-void zlib_compress_init(void);
-void zlib_decompress_init(void);
-int zlib_compress_block(unsigned char *block, int len,
+void *zlib_compress_init(void);
+void zlib_compress_cleanup(void *);
+void *zlib_decompress_init(void);
+void zlib_decompress_cleanup(void *);
+int zlib_compress_block(void *, unsigned char *block, int len,
unsigned char **outblock, int *outlen);
-int zlib_decompress_block(unsigned char *block, int len,
+int zlib_decompress_block(void *, unsigned char *block, int len,
unsigned char **outblock, int *outlen);
+
+/*
+ * Connection-sharing API provided by platforms. This function must
+ * either:
+ * - return SHARE_NONE and do nothing
+ * - return SHARE_DOWNSTREAM and set *sock to a Socket connected to
+ * downplug
+ * - return SHARE_UPSTREAM and set *sock to a Socket connected to
+ * upplug.
+ */
+enum { SHARE_NONE, SHARE_DOWNSTREAM, SHARE_UPSTREAM };
+int platform_ssh_share(const char *name, Conf *conf,
+ Plug downplug, Plug upplug, Socket *sock,
+ char **logtext, char **ds_err, char **us_err,
+ int can_upstream, int can_downstream);
+void platform_ssh_share_cleanup(const char *name);
+
+/*
+ * SSH-1 message type codes.
+ */
+#define SSH1_MSG_DISCONNECT 1 /* 0x1 */
+#define SSH1_SMSG_PUBLIC_KEY 2 /* 0x2 */
+#define SSH1_CMSG_SESSION_KEY 3 /* 0x3 */
+#define SSH1_CMSG_USER 4 /* 0x4 */
+#define SSH1_CMSG_AUTH_RSA 6 /* 0x6 */
+#define SSH1_SMSG_AUTH_RSA_CHALLENGE 7 /* 0x7 */
+#define SSH1_CMSG_AUTH_RSA_RESPONSE 8 /* 0x8 */
+#define SSH1_CMSG_AUTH_PASSWORD 9 /* 0x9 */
+#define SSH1_CMSG_REQUEST_PTY 10 /* 0xa */
+#define SSH1_CMSG_WINDOW_SIZE 11 /* 0xb */
+#define SSH1_CMSG_EXEC_SHELL 12 /* 0xc */
+#define SSH1_CMSG_EXEC_CMD 13 /* 0xd */
+#define SSH1_SMSG_SUCCESS 14 /* 0xe */
+#define SSH1_SMSG_FAILURE 15 /* 0xf */
+#define SSH1_CMSG_STDIN_DATA 16 /* 0x10 */
+#define SSH1_SMSG_STDOUT_DATA 17 /* 0x11 */
+#define SSH1_SMSG_STDERR_DATA 18 /* 0x12 */
+#define SSH1_CMSG_EOF 19 /* 0x13 */
+#define SSH1_SMSG_EXIT_STATUS 20 /* 0x14 */
+#define SSH1_MSG_CHANNEL_OPEN_CONFIRMATION 21 /* 0x15 */
+#define SSH1_MSG_CHANNEL_OPEN_FAILURE 22 /* 0x16 */
+#define SSH1_MSG_CHANNEL_DATA 23 /* 0x17 */
+#define SSH1_MSG_CHANNEL_CLOSE 24 /* 0x18 */
+#define SSH1_MSG_CHANNEL_CLOSE_CONFIRMATION 25 /* 0x19 */
+#define SSH1_SMSG_X11_OPEN 27 /* 0x1b */
+#define SSH1_CMSG_PORT_FORWARD_REQUEST 28 /* 0x1c */
+#define SSH1_MSG_PORT_OPEN 29 /* 0x1d */
+#define SSH1_CMSG_AGENT_REQUEST_FORWARDING 30 /* 0x1e */
+#define SSH1_SMSG_AGENT_OPEN 31 /* 0x1f */
+#define SSH1_MSG_IGNORE 32 /* 0x20 */
+#define SSH1_CMSG_EXIT_CONFIRMATION 33 /* 0x21 */
+#define SSH1_CMSG_X11_REQUEST_FORWARDING 34 /* 0x22 */
+#define SSH1_CMSG_AUTH_RHOSTS_RSA 35 /* 0x23 */
+#define SSH1_MSG_DEBUG 36 /* 0x24 */
+#define SSH1_CMSG_REQUEST_COMPRESSION 37 /* 0x25 */
+#define SSH1_CMSG_AUTH_TIS 39 /* 0x27 */
+#define SSH1_SMSG_AUTH_TIS_CHALLENGE 40 /* 0x28 */
+#define SSH1_CMSG_AUTH_TIS_RESPONSE 41 /* 0x29 */
+#define SSH1_CMSG_AUTH_CCARD 70 /* 0x46 */
+#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 */
+
+#define SSH1_PROTOFLAG_SCREEN_NUMBER 1 /* 0x1 */
+/* Mask for protoflags we will echo back to server if seen */
+#define SSH1_PROTOFLAGS_SUPPORTED 0 /* 0x1 */
+
+/*
+ * SSH-2 message type codes.
+ */
+#define SSH2_MSG_DISCONNECT 1 /* 0x1 */
+#define SSH2_MSG_IGNORE 2 /* 0x2 */
+#define SSH2_MSG_UNIMPLEMENTED 3 /* 0x3 */
+#define SSH2_MSG_DEBUG 4 /* 0x4 */
+#define SSH2_MSG_SERVICE_REQUEST 5 /* 0x5 */
+#define SSH2_MSG_SERVICE_ACCEPT 6 /* 0x6 */
+#define SSH2_MSG_KEXINIT 20 /* 0x14 */
+#define SSH2_MSG_NEWKEYS 21 /* 0x15 */
+#define SSH2_MSG_KEXDH_INIT 30 /* 0x1e */
+#define SSH2_MSG_KEXDH_REPLY 31 /* 0x1f */
+#define SSH2_MSG_KEX_DH_GEX_REQUEST_OLD 30 /* 0x1e */
+#define SSH2_MSG_KEX_DH_GEX_REQUEST 34 /* 0x22 */
+#define SSH2_MSG_KEX_DH_GEX_GROUP 31 /* 0x1f */
+#define SSH2_MSG_KEX_DH_GEX_INIT 32 /* 0x20 */
+#define SSH2_MSG_KEX_DH_GEX_REPLY 33 /* 0x21 */
+#define SSH2_MSG_KEXRSA_PUBKEY 30 /* 0x1e */
+#define SSH2_MSG_KEXRSA_SECRET 31 /* 0x1f */
+#define SSH2_MSG_KEXRSA_DONE 32 /* 0x20 */
+#define SSH2_MSG_KEX_ECDH_INIT 30 /* 0x1e */
+#define SSH2_MSG_KEX_ECDH_REPLY 31 /* 0x1f */
+#define SSH2_MSG_KEX_ECMQV_INIT 30 /* 0x1e */
+#define SSH2_MSG_KEX_ECMQV_REPLY 31 /* 0x1f */
+#define SSH2_MSG_USERAUTH_REQUEST 50 /* 0x32 */
+#define SSH2_MSG_USERAUTH_FAILURE 51 /* 0x33 */
+#define SSH2_MSG_USERAUTH_SUCCESS 52 /* 0x34 */
+#define SSH2_MSG_USERAUTH_BANNER 53 /* 0x35 */
+#define SSH2_MSG_USERAUTH_PK_OK 60 /* 0x3c */
+#define SSH2_MSG_USERAUTH_PASSWD_CHANGEREQ 60 /* 0x3c */
+#define SSH2_MSG_USERAUTH_INFO_REQUEST 60 /* 0x3c */
+#define SSH2_MSG_USERAUTH_INFO_RESPONSE 61 /* 0x3d */
+#define SSH2_MSG_GLOBAL_REQUEST 80 /* 0x50 */
+#define SSH2_MSG_REQUEST_SUCCESS 81 /* 0x51 */
+#define SSH2_MSG_REQUEST_FAILURE 82 /* 0x52 */
+#define SSH2_MSG_CHANNEL_OPEN 90 /* 0x5a */
+#define SSH2_MSG_CHANNEL_OPEN_CONFIRMATION 91 /* 0x5b */
+#define SSH2_MSG_CHANNEL_OPEN_FAILURE 92 /* 0x5c */
+#define SSH2_MSG_CHANNEL_WINDOW_ADJUST 93 /* 0x5d */
+#define SSH2_MSG_CHANNEL_DATA 94 /* 0x5e */
+#define SSH2_MSG_CHANNEL_EXTENDED_DATA 95 /* 0x5f */
+#define SSH2_MSG_CHANNEL_EOF 96 /* 0x60 */
+#define SSH2_MSG_CHANNEL_CLOSE 97 /* 0x61 */
+#define SSH2_MSG_CHANNEL_REQUEST 98 /* 0x62 */
+#define SSH2_MSG_CHANNEL_SUCCESS 99 /* 0x63 */
+#define SSH2_MSG_CHANNEL_FAILURE 100 /* 0x64 */
+#define SSH2_MSG_USERAUTH_GSSAPI_RESPONSE 60
+#define SSH2_MSG_USERAUTH_GSSAPI_TOKEN 61
+#define SSH2_MSG_USERAUTH_GSSAPI_EXCHANGE_COMPLETE 63
+#define SSH2_MSG_USERAUTH_GSSAPI_ERROR 64
+#define SSH2_MSG_USERAUTH_GSSAPI_ERRTOK 65
+#define SSH2_MSG_USERAUTH_GSSAPI_MIC 66
+
+/*
+ * SSH-1 agent messages.
+ */
+#define SSH1_AGENTC_REQUEST_RSA_IDENTITIES 1
+#define SSH1_AGENT_RSA_IDENTITIES_ANSWER 2
+#define SSH1_AGENTC_RSA_CHALLENGE 3
+#define SSH1_AGENT_RSA_RESPONSE 4
+#define SSH1_AGENTC_ADD_RSA_IDENTITY 7
+#define SSH1_AGENTC_REMOVE_RSA_IDENTITY 8
+#define SSH1_AGENTC_REMOVE_ALL_RSA_IDENTITIES 9 /* openssh private? */
+
+/*
+ * Messages common to SSH-1 and OpenSSH's SSH-2.
+ */
+#define SSH_AGENT_FAILURE 5
+#define SSH_AGENT_SUCCESS 6
+
+/*
+ * OpenSSH's SSH-2 agent messages.
+ */
+#define SSH2_AGENTC_REQUEST_IDENTITIES 11
+#define SSH2_AGENT_IDENTITIES_ANSWER 12
+#define SSH2_AGENTC_SIGN_REQUEST 13
+#define SSH2_AGENT_SIGN_RESPONSE 14
+#define SSH2_AGENTC_ADD_IDENTITY 17
+#define SSH2_AGENTC_REMOVE_IDENTITY 18
+#define SSH2_AGENTC_REMOVE_ALL_IDENTITIES 19
+
+/*
+ * Assorted other SSH-related enumerations.
+ */
+#define SSH2_DISCONNECT_HOST_NOT_ALLOWED_TO_CONNECT 1 /* 0x1 */
+#define SSH2_DISCONNECT_PROTOCOL_ERROR 2 /* 0x2 */
+#define SSH2_DISCONNECT_KEY_EXCHANGE_FAILED 3 /* 0x3 */
+#define SSH2_DISCONNECT_HOST_AUTHENTICATION_FAILED 4 /* 0x4 */
+#define SSH2_DISCONNECT_MAC_ERROR 5 /* 0x5 */
+#define SSH2_DISCONNECT_COMPRESSION_ERROR 6 /* 0x6 */
+#define SSH2_DISCONNECT_SERVICE_NOT_AVAILABLE 7 /* 0x7 */
+#define SSH2_DISCONNECT_PROTOCOL_VERSION_NOT_SUPPORTED 8 /* 0x8 */
+#define SSH2_DISCONNECT_HOST_KEY_NOT_VERIFIABLE 9 /* 0x9 */
+#define SSH2_DISCONNECT_CONNECTION_LOST 10 /* 0xa */
+#define SSH2_DISCONNECT_BY_APPLICATION 11 /* 0xb */
+#define SSH2_DISCONNECT_TOO_MANY_CONNECTIONS 12 /* 0xc */
+#define SSH2_DISCONNECT_AUTH_CANCELLED_BY_USER 13 /* 0xd */
+#define SSH2_DISCONNECT_NO_MORE_AUTH_METHODS_AVAILABLE 14 /* 0xe */
+#define SSH2_DISCONNECT_ILLEGAL_USER_NAME 15 /* 0xf */
+
+#define SSH2_OPEN_ADMINISTRATIVELY_PROHIBITED 1 /* 0x1 */
+#define SSH2_OPEN_CONNECT_FAILED 2 /* 0x2 */
+#define SSH2_OPEN_UNKNOWN_CHANNEL_TYPE 3 /* 0x3 */
+#define SSH2_OPEN_RESOURCE_SHORTAGE 4 /* 0x4 */
+
+#define SSH2_EXTENDED_DATA_STDERR 1 /* 0x1 */
+
+/*
+ * Need this to warn about support for the original SSH-2 keyfile
+ * format.
+ */
+void old_keyfile_warning(void);
projects / PuTTY.git / blobdiff