--- /dev/null
+#include <stdio.h>\r
+#include <string.h>\r
+\r
+#include "puttymem.h"\r
+#include "tree234.h"\r
+#include "network.h"\r
+#include "int64.h"\r
+#include "misc.h"\r
+\r
+struct ssh_channel;\r
+\r
+extern void sshfwd_close(struct ssh_channel *c);\r
+extern int sshfwd_write(struct ssh_channel *c, char *, int);\r
+extern void sshfwd_unthrottle(struct ssh_channel *c, int bufsize);\r
+\r
+/*\r
+ * Useful thing.\r
+ */\r
+#ifndef lenof\r
+#define lenof(x) ( (sizeof((x))) / (sizeof(*(x))))\r
+#endif\r
+\r
+#define SSH_CIPHER_IDEA 1\r
+#define SSH_CIPHER_DES 2\r
+#define SSH_CIPHER_3DES 3\r
+#define SSH_CIPHER_BLOWFISH 6\r
+\r
+#ifdef MSCRYPTOAPI\r
+#define APIEXTRA 8\r
+#else\r
+#define APIEXTRA 0\r
+#endif\r
+\r
+#ifndef BIGNUM_INTERNAL\r
+typedef void *Bignum;\r
+#endif\r
+\r
+struct RSAKey {\r
+ int bits;\r
+ int bytes;\r
+#ifdef MSCRYPTOAPI\r
+ unsigned long exponent;\r
+ unsigned char *modulus;\r
+#else\r
+ Bignum modulus;\r
+ Bignum exponent;\r
+ Bignum private_exponent;\r
+ Bignum p;\r
+ Bignum q;\r
+ Bignum iqmp;\r
+#endif\r
+ char *comment;\r
+};\r
+\r
+struct dss_key {\r
+ Bignum p, q, g, y, x;\r
+};\r
+\r
+int makekey(unsigned char *data, int len, struct RSAKey *result,\r
+ unsigned char **keystr, int order);\r
+int makeprivate(unsigned char *data, int len, struct RSAKey *result);\r
+int rsaencrypt(unsigned char *data, int length, struct RSAKey *key);\r
+Bignum rsadecrypt(Bignum input, struct RSAKey *key);\r
+void rsasign(unsigned char *data, int length, struct RSAKey *key);\r
+void rsasanitise(struct RSAKey *key);\r
+int rsastr_len(struct RSAKey *key);\r
+void rsastr_fmt(char *str, struct RSAKey *key);\r
+void rsa_fingerprint(char *str, int len, struct RSAKey *key);\r
+int rsa_verify(struct RSAKey *key);\r
+unsigned char *rsa_public_blob(struct RSAKey *key, int *len);\r
+int rsa_public_blob_len(void *data, int maxlen);\r
+void freersakey(struct RSAKey *key);\r
+\r
+#ifndef PUTTY_UINT32_DEFINED\r
+/* This makes assumptions about the int type. */\r
+typedef unsigned int uint32;\r
+#define PUTTY_UINT32_DEFINED\r
+#endif\r
+typedef uint32 word32;\r
+\r
+unsigned long crc32_compute(const void *s, size_t len);\r
+unsigned long crc32_update(unsigned long crc_input, const void *s, size_t len);\r
+\r
+/* SSH CRC compensation attack detector */\r
+void *crcda_make_context(void);\r
+void crcda_free_context(void *handle);\r
+int detect_attack(void *handle, unsigned char *buf, uint32 len,\r
+ unsigned char *IV);\r
+\r
+/*\r
+ * SSH2 RSA key exchange functions\r
+ */\r
+struct ssh_hash;\r
+void *ssh_rsakex_newkey(char *data, int len);\r
+void ssh_rsakex_freekey(void *key);\r
+int ssh_rsakex_klen(void *key);\r
+void ssh_rsakex_encrypt(const struct ssh_hash *h, unsigned char *in, int inlen,\r
+ unsigned char *out, int outlen,\r
+ void *key);\r
+\r
+typedef struct {\r
+ uint32 h[4];\r
+} MD5_Core_State;\r
+\r
+struct MD5Context {\r
+#ifdef MSCRYPTOAPI\r
+ unsigned long hHash;\r
+#else\r
+ MD5_Core_State core;\r
+ unsigned char block[64];\r
+ int blkused;\r
+ uint32 lenhi, lenlo;\r
+#endif\r
+};\r
+\r
+void MD5Init(struct MD5Context *context);\r
+void MD5Update(struct MD5Context *context, unsigned char const *buf,\r
+ unsigned len);\r
+void MD5Final(unsigned char digest[16], struct MD5Context *context);\r
+void MD5Simple(void const *p, unsigned len, unsigned char output[16]);\r
+\r
+void *hmacmd5_make_context(void);\r
+void hmacmd5_free_context(void *handle);\r
+void hmacmd5_key(void *handle, void const *key, int len);\r
+void hmacmd5_do_hmac(void *handle, unsigned char const *blk, int len,\r
+ unsigned char *hmac);\r
+\r
+typedef struct {\r
+ uint32 h[5];\r
+ unsigned char block[64];\r
+ int blkused;\r
+ uint32 lenhi, lenlo;\r
+} SHA_State;\r
+void SHA_Init(SHA_State * s);\r
+void SHA_Bytes(SHA_State * s, void *p, int len);\r
+void SHA_Final(SHA_State * s, unsigned char *output);\r
+void SHA_Simple(void *p, int len, unsigned char *output);\r
+\r
+void hmac_sha1_simple(void *key, int keylen, void *data, int datalen,\r
+ unsigned char *output);\r
+typedef struct {\r
+ uint32 h[8];\r
+ unsigned char block[64];\r
+ int blkused;\r
+ uint32 lenhi, lenlo;\r
+} SHA256_State;\r
+void SHA256_Init(SHA256_State * s);\r
+void SHA256_Bytes(SHA256_State * s, const void *p, int len);\r
+void SHA256_Final(SHA256_State * s, unsigned char *output);\r
+void SHA256_Simple(const void *p, int len, unsigned char *output);\r
+\r
+typedef struct {\r
+ uint64 h[8];\r
+ unsigned char block[128];\r
+ int blkused;\r
+ uint32 len[4];\r
+} SHA512_State;\r
+void SHA512_Init(SHA512_State * s);\r
+void SHA512_Bytes(SHA512_State * s, const void *p, int len);\r
+void SHA512_Final(SHA512_State * s, unsigned char *output);\r
+void SHA512_Simple(const void *p, int len, unsigned char *output);\r
+\r
+struct ssh_cipher {\r
+ void *(*make_context)(void);\r
+ void (*free_context)(void *);\r
+ void (*sesskey) (void *, unsigned char *key); /* for SSH-1 */\r
+ void (*encrypt) (void *, unsigned char *blk, int len);\r
+ void (*decrypt) (void *, unsigned char *blk, int len);\r
+ int blksize;\r
+ char *text_name;\r
+};\r
+\r
+struct ssh2_cipher {\r
+ void *(*make_context)(void);\r
+ void (*free_context)(void *);\r
+ void (*setiv) (void *, unsigned char *key); /* for SSH-2 */\r
+ void (*setkey) (void *, unsigned char *key);/* for SSH-2 */\r
+ void (*encrypt) (void *, unsigned char *blk, int len);\r
+ void (*decrypt) (void *, unsigned char *blk, int len);\r
+ char *name;\r
+ int blksize;\r
+ int keylen;\r
+ unsigned int flags;\r
+#define SSH_CIPHER_IS_CBC 1\r
+ char *text_name;\r
+};\r
+\r
+struct ssh2_ciphers {\r
+ int nciphers;\r
+ const struct ssh2_cipher *const *list;\r
+};\r
+\r
+struct ssh_mac {\r
+ void *(*make_context)(void);\r
+ void (*free_context)(void *);\r
+ void (*setkey) (void *, unsigned char *key);\r
+ /* whole-packet operations */\r
+ void (*generate) (void *, unsigned char *blk, int len, unsigned long seq);\r
+ int (*verify) (void *, unsigned char *blk, int len, unsigned long seq);\r
+ /* partial-packet operations */\r
+ void (*start) (void *);\r
+ void (*bytes) (void *, unsigned char const *, int);\r
+ void (*genresult) (void *, unsigned char *);\r
+ int (*verresult) (void *, unsigned char const *);\r
+ char *name;\r
+ int len;\r
+ char *text_name;\r
+};\r
+\r
+struct ssh_hash {\r
+ void *(*init)(void); /* also allocates context */\r
+ void (*bytes)(void *, void *, int);\r
+ void (*final)(void *, unsigned char *); /* also frees context */\r
+ int hlen; /* output length in bytes */\r
+ char *text_name;\r
+}; \r
+\r
+struct ssh_kex {\r
+ char *name, *groupname;\r
+ enum { KEXTYPE_DH, KEXTYPE_RSA } main_type;\r
+ /* For DH */\r
+ const unsigned char *pdata, *gdata; /* NULL means group exchange */\r
+ int plen, glen;\r
+ const struct ssh_hash *hash;\r
+};\r
+\r
+struct ssh_kexes {\r
+ int nkexes;\r
+ const struct ssh_kex *const *list;\r
+};\r
+\r
+struct ssh_signkey {\r
+ void *(*newkey) (char *data, int len);\r
+ void (*freekey) (void *key);\r
+ char *(*fmtkey) (void *key);\r
+ unsigned char *(*public_blob) (void *key, int *len);\r
+ unsigned char *(*private_blob) (void *key, int *len);\r
+ void *(*createkey) (unsigned char *pub_blob, int pub_len,\r
+ unsigned char *priv_blob, int priv_len);\r
+ void *(*openssh_createkey) (unsigned char **blob, int *len);\r
+ int (*openssh_fmtkey) (void *key, unsigned char *blob, int len);\r
+ int (*pubkey_bits) (void *blob, int len);\r
+ char *(*fingerprint) (void *key);\r
+ int (*verifysig) (void *key, char *sig, int siglen,\r
+ char *data, int datalen);\r
+ unsigned char *(*sign) (void *key, char *data, int datalen,\r
+ int *siglen);\r
+ char *name;\r
+ char *keytype; /* for host key cache */\r
+};\r
+\r
+struct ssh_compress {\r
+ char *name;\r
+ /* For zlib@openssh.com: if non-NULL, this name will be considered once\r
+ * userauth has completed successfully. */\r
+ char *delayed_name;\r
+ void *(*compress_init) (void);\r
+ void (*compress_cleanup) (void *);\r
+ int (*compress) (void *, unsigned char *block, int len,\r
+ unsigned char **outblock, int *outlen);\r
+ void *(*decompress_init) (void);\r
+ void (*decompress_cleanup) (void *);\r
+ int (*decompress) (void *, unsigned char *block, int len,\r
+ unsigned char **outblock, int *outlen);\r
+ int (*disable_compression) (void *);\r
+ char *text_name;\r
+};\r
+\r
+struct ssh2_userkey {\r
+ const struct ssh_signkey *alg; /* the key algorithm */\r
+ void *data; /* the key data */\r
+ char *comment; /* the key comment */\r
+};\r
+\r
+/* The maximum length of any hash algorithm used in kex. (bytes) */\r
+#define SSH2_KEX_MAX_HASH_LEN (32) /* SHA-256 */\r
+\r
+extern const struct ssh_cipher ssh_3des;\r
+extern const struct ssh_cipher ssh_des;\r
+extern const struct ssh_cipher ssh_blowfish_ssh1;\r
+extern const struct ssh2_ciphers ssh2_3des;\r
+extern const struct ssh2_ciphers ssh2_des;\r
+extern const struct ssh2_ciphers ssh2_aes;\r
+extern const struct ssh2_ciphers ssh2_blowfish;\r
+extern const struct ssh2_ciphers ssh2_arcfour;\r
+extern const struct ssh_hash ssh_sha1;\r
+extern const struct ssh_hash ssh_sha256;\r
+extern const struct ssh_kexes ssh_diffiehellman_group1;\r
+extern const struct ssh_kexes ssh_diffiehellman_group14;\r
+extern const struct ssh_kexes ssh_diffiehellman_gex;\r
+extern const struct ssh_kexes ssh_rsa_kex;\r
+extern const struct ssh_signkey ssh_dss;\r
+extern const struct ssh_signkey ssh_rsa;\r
+extern const struct ssh_mac ssh_hmac_md5;\r
+extern const struct ssh_mac ssh_hmac_sha1;\r
+extern const struct ssh_mac ssh_hmac_sha1_buggy;\r
+extern const struct ssh_mac ssh_hmac_sha1_96;\r
+extern const struct ssh_mac ssh_hmac_sha1_96_buggy;\r
+\r
+void *aes_make_context(void);\r
+void aes_free_context(void *handle);\r
+void aes128_key(void *handle, unsigned char *key);\r
+void aes192_key(void *handle, unsigned char *key);\r
+void aes256_key(void *handle, unsigned char *key);\r
+void aes_iv(void *handle, unsigned char *iv);\r
+void aes_ssh2_encrypt_blk(void *handle, unsigned char *blk, int len);\r
+void aes_ssh2_decrypt_blk(void *handle, unsigned char *blk, int len);\r
+\r
+/*\r
+ * PuTTY version number formatted as an SSH version string. \r
+ */\r
+extern char sshver[];\r
+\r
+/*\r
+ * Gross hack: pscp will try to start SFTP but fall back to scp1 if\r
+ * that fails. This variable is the means by which scp.c can reach\r
+ * into the SSH code and find out which one it got.\r
+ */\r
+extern int ssh_fallback_cmd(void *handle);\r
+\r
+#ifndef MSCRYPTOAPI\r
+void SHATransform(word32 * digest, word32 * data);\r
+#endif\r
+\r
+int random_byte(void);\r
+void random_add_noise(void *noise, int length);\r
+void random_add_heavynoise(void *noise, int length);\r
+\r
+void logevent(void *, const char *);\r
+\r
+/* Allocate and register a new channel for port forwarding */\r
+void *new_sock_channel(void *handle, Socket s);\r
+void ssh_send_port_open(void *channel, char *hostname, int port, char *org);\r
+\r
+/* Exports from portfwd.c */\r
+extern const char *pfd_newconnect(Socket * s, char *hostname, int port,\r
+ void *c, const Config *cfg,\r
+ int addressfamily);\r
+/* desthost == NULL indicates dynamic (SOCKS) port forwarding */\r
+extern const char *pfd_addforward(char *desthost, int destport, char *srcaddr,\r
+ int port, void *backhandle,\r
+ const Config *cfg, void **sockdata,\r
+ int address_family);\r
+extern void pfd_close(Socket s);\r
+extern void pfd_terminate(void *sockdata);\r
+extern int pfd_send(Socket s, char *data, int len);\r
+extern void pfd_confirm(Socket s);\r
+extern void pfd_unthrottle(Socket s);\r
+extern void pfd_override_throttle(Socket s, int enable);\r
+\r
+/* Exports from x11fwd.c */\r
+enum {\r
+ X11_TRANS_IPV4 = 0, X11_TRANS_IPV6 = 6, X11_TRANS_UNIX = 256\r
+};\r
+struct X11Display {\r
+ /* Broken-down components of the display name itself */\r
+ int unixdomain;\r
+ char *hostname;\r
+ int displaynum;\r
+ int screennum;\r
+ /* OSX sometimes replaces all the above with a full Unix-socket pathname */\r
+ char *unixsocketpath;\r
+\r
+ /* PuTTY networking SockAddr to connect to the display, and associated\r
+ * gubbins */\r
+ SockAddr addr;\r
+ int port;\r
+ char *realhost;\r
+\r
+ /* Auth details we invented for the virtual display on the SSH server. */\r
+ int remoteauthproto;\r
+ unsigned char *remoteauthdata;\r
+ int remoteauthdatalen;\r
+ char *remoteauthprotoname;\r
+ char *remoteauthdatastring;\r
+\r
+ /* Our local auth details for talking to the real X display. */\r
+ int localauthproto;\r
+ unsigned char *localauthdata;\r
+ int localauthdatalen;\r
+\r
+ /*\r
+ * Used inside x11fwd.c to remember recently seen\r
+ * XDM-AUTHORIZATION-1 strings, to avoid replay attacks.\r
+ */\r
+ tree234 *xdmseen;\r
+};\r
+/*\r
+ * x11_setup_display() parses the display variable and fills in an\r
+ * X11Display structure. Some remote auth details are invented;\r
+ * the supplied authtype parameter configures the preferred\r
+ * authorisation protocol to use at the remote end. The local auth\r
+ * details are looked up by calling platform_get_x11_auth.\r
+ */\r
+extern struct X11Display *x11_setup_display(char *display, int authtype,\r
+ const Config *);\r
+void x11_free_display(struct X11Display *disp);\r
+extern const char *x11_init(Socket *, struct X11Display *, void *,\r
+ const char *, int, const Config *);\r
+extern void x11_close(Socket);\r
+extern int x11_send(Socket, char *, int);\r
+extern void x11_unthrottle(Socket s);\r
+extern void x11_override_throttle(Socket s, int enable);\r
+char *x11_display(const char *display);\r
+/* Platform-dependent X11 functions */\r
+extern void platform_get_x11_auth(struct X11Display *display,\r
+ const Config *);\r
+ /* examine a mostly-filled-in X11Display and fill in localauth* */\r
+extern const int platform_uses_x11_unix_by_default;\r
+ /* choose default X transport in the absence of a specified one */\r
+SockAddr platform_get_x11_unix_address(const char *path, int displaynum);\r
+ /* make up a SockAddr naming the address for displaynum */\r
+char *platform_get_x_display(void);\r
+ /* allocated local X display string, if any */\r
+/* Callbacks in x11.c usable _by_ platform X11 functions */\r
+/*\r
+ * This function does the job of platform_get_x11_auth, provided\r
+ * it is told where to find a normally formatted .Xauthority file:\r
+ * it opens that file, parses it to find an auth record which\r
+ * matches the display details in "display", and fills in the\r
+ * localauth fields.\r
+ *\r
+ * It is expected that most implementations of\r
+ * platform_get_x11_auth() will work by finding their system's\r
+ * .Xauthority file, adjusting the display details if necessary\r
+ * for local oddities like Unix-domain socket transport, and\r
+ * calling this function to do the rest of the work.\r
+ */\r
+void x11_get_auth_from_authfile(struct X11Display *display,\r
+ const char *authfilename);\r
+\r
+Bignum copybn(Bignum b);\r
+Bignum bn_power_2(int n);\r
+void bn_restore_invariant(Bignum b);\r
+Bignum bignum_from_long(unsigned long n);\r
+void freebn(Bignum b);\r
+Bignum modpow(Bignum base, Bignum exp, Bignum mod);\r
+Bignum modmul(Bignum a, Bignum b, Bignum mod);\r
+void decbn(Bignum n);\r
+extern Bignum Zero, One;\r
+Bignum bignum_from_bytes(const unsigned char *data, int nbytes);\r
+int ssh1_read_bignum(const unsigned char *data, int len, Bignum * result);\r
+int bignum_bitcount(Bignum bn);\r
+int ssh1_bignum_length(Bignum bn);\r
+int ssh2_bignum_length(Bignum bn);\r
+int bignum_byte(Bignum bn, int i);\r
+int bignum_bit(Bignum bn, int i);\r
+void bignum_set_bit(Bignum bn, int i, int value);\r
+int ssh1_write_bignum(void *data, Bignum bn);\r
+Bignum biggcd(Bignum a, Bignum b);\r
+unsigned short bignum_mod_short(Bignum number, unsigned short modulus);\r
+Bignum bignum_add_long(Bignum number, unsigned long addend);\r
+Bignum bigadd(Bignum a, Bignum b);\r
+Bignum bigsub(Bignum a, Bignum b);\r
+Bignum bigmul(Bignum a, Bignum b);\r
+Bignum bigmuladd(Bignum a, Bignum b, Bignum addend);\r
+Bignum bigdiv(Bignum a, Bignum b);\r
+Bignum bigmod(Bignum a, Bignum b);\r
+Bignum modinv(Bignum number, Bignum modulus);\r
+Bignum bignum_bitmask(Bignum number);\r
+Bignum bignum_rshift(Bignum number, int shift);\r
+int bignum_cmp(Bignum a, Bignum b);\r
+char *bignum_decimal(Bignum x);\r
+\r
+#ifdef DEBUG\r
+void diagbn(char *prefix, Bignum md);\r
+#endif\r
+\r
+void *dh_setup_group(const struct ssh_kex *kex);\r
+void *dh_setup_gex(Bignum pval, Bignum gval);\r
+void dh_cleanup(void *);\r
+Bignum dh_create_e(void *, int nbits);\r
+Bignum dh_find_K(void *, Bignum f);\r
+\r
+int loadrsakey(const Filename *filename, struct RSAKey *key,\r
+ char *passphrase, const char **errorstr);\r
+int rsakey_encrypted(const Filename *filename, char **comment);\r
+int rsakey_pubblob(const Filename *filename, void **blob, int *bloblen,\r
+ char **commentptr, const char **errorstr);\r
+\r
+int saversakey(const Filename *filename, struct RSAKey *key, char *passphrase);\r
+\r
+extern int base64_decode_atom(char *atom, unsigned char *out);\r
+extern int base64_lines(int datalen);\r
+extern void base64_encode_atom(unsigned char *data, int n, char *out);\r
+extern void base64_encode(FILE *fp, unsigned char *data, int datalen, int cpl);\r
+\r
+/* ssh2_load_userkey can return this as an error */\r
+extern struct ssh2_userkey ssh2_wrong_passphrase;\r
+#define SSH2_WRONG_PASSPHRASE (&ssh2_wrong_passphrase)\r
+\r
+int ssh2_userkey_encrypted(const Filename *filename, char **comment);\r
+struct ssh2_userkey *ssh2_load_userkey(const Filename *filename,\r
+ char *passphrase, const char **errorstr);\r
+unsigned char *ssh2_userkey_loadpub(const Filename *filename, char **algorithm,\r
+ int *pub_blob_len, char **commentptr,\r
+ const char **errorstr);\r
+int ssh2_save_userkey(const Filename *filename, struct ssh2_userkey *key,\r
+ char *passphrase);\r
+const struct ssh_signkey *find_pubkey_alg(const char *name);\r
+\r
+enum {\r
+ SSH_KEYTYPE_UNOPENABLE,\r
+ SSH_KEYTYPE_UNKNOWN,\r
+ SSH_KEYTYPE_SSH1, SSH_KEYTYPE_SSH2,\r
+ SSH_KEYTYPE_OPENSSH, SSH_KEYTYPE_SSHCOM\r
+};\r
+int key_type(const Filename *filename);\r
+char *key_type_to_str(int type);\r
+\r
+int import_possible(int type);\r
+int import_target_type(int type);\r
+int import_encrypted(const Filename *filename, int type, char **comment);\r
+int import_ssh1(const Filename *filename, int type,\r
+ struct RSAKey *key, char *passphrase, const char **errmsg_p);\r
+struct ssh2_userkey *import_ssh2(const Filename *filename, int type,\r
+ char *passphrase, const char **errmsg_p);\r
+int export_ssh1(const Filename *filename, int type,\r
+ struct RSAKey *key, char *passphrase);\r
+int export_ssh2(const Filename *filename, int type,\r
+ struct ssh2_userkey *key, char *passphrase);\r
+\r
+void des3_decrypt_pubkey(unsigned char *key, unsigned char *blk, int len);\r
+void des3_encrypt_pubkey(unsigned char *key, unsigned char *blk, int len);\r
+void des3_decrypt_pubkey_ossh(unsigned char *key, unsigned char *iv,\r
+ unsigned char *blk, int len);\r
+void des3_encrypt_pubkey_ossh(unsigned char *key, unsigned char *iv,\r
+ unsigned char *blk, int len);\r
+void aes256_encrypt_pubkey(unsigned char *key, unsigned char *blk,\r
+ int len);\r
+void aes256_decrypt_pubkey(unsigned char *key, unsigned char *blk,\r
+ int len);\r
+\r
+void des_encrypt_xdmauth(unsigned char *key, unsigned char *blk, int len);\r
+void des_decrypt_xdmauth(unsigned char *key, unsigned char *blk, int len);\r
+\r
+/*\r
+ * For progress updates in the key generation utility.\r
+ */\r
+#define PROGFN_INITIALISE 1\r
+#define PROGFN_LIN_PHASE 2\r
+#define PROGFN_EXP_PHASE 3\r
+#define PROGFN_PHASE_EXTENT 4\r
+#define PROGFN_READY 5\r
+#define PROGFN_PROGRESS 6\r
+typedef void (*progfn_t) (void *param, int action, int phase, int progress);\r
+\r
+int rsa_generate(struct RSAKey *key, int bits, progfn_t pfn,\r
+ void *pfnparam);\r
+int dsa_generate(struct dss_key *key, int bits, progfn_t pfn,\r
+ void *pfnparam);\r
+Bignum primegen(int bits, int modulus, int residue, Bignum factor,\r
+ int phase, progfn_t pfn, void *pfnparam);\r
+\r
+\r
+/*\r
+ * zlib compression.\r
+ */\r
+void *zlib_compress_init(void);\r
+void zlib_compress_cleanup(void *);\r
+void *zlib_decompress_init(void);\r
+void zlib_decompress_cleanup(void *);\r
+int zlib_compress_block(void *, unsigned char *block, int len,\r
+ unsigned char **outblock, int *outlen);\r
+int zlib_decompress_block(void *, unsigned char *block, int len,\r
+ unsigned char **outblock, int *outlen);\r
+\r
+/*\r
+ * SSH-1 agent messages.\r
+ */\r
+#define SSH1_AGENTC_REQUEST_RSA_IDENTITIES 1\r
+#define SSH1_AGENT_RSA_IDENTITIES_ANSWER 2\r
+#define SSH1_AGENTC_RSA_CHALLENGE 3\r
+#define SSH1_AGENT_RSA_RESPONSE 4\r
+#define SSH1_AGENTC_ADD_RSA_IDENTITY 7\r
+#define SSH1_AGENTC_REMOVE_RSA_IDENTITY 8\r
+#define SSH1_AGENTC_REMOVE_ALL_RSA_IDENTITIES 9 /* openssh private? */\r
+\r
+/*\r
+ * Messages common to SSH-1 and OpenSSH's SSH-2.\r
+ */\r
+#define SSH_AGENT_FAILURE 5\r
+#define SSH_AGENT_SUCCESS 6\r
+\r
+/*\r
+ * OpenSSH's SSH-2 agent messages.\r
+ */\r
+#define SSH2_AGENTC_REQUEST_IDENTITIES 11\r
+#define SSH2_AGENT_IDENTITIES_ANSWER 12\r
+#define SSH2_AGENTC_SIGN_REQUEST 13\r
+#define SSH2_AGENT_SIGN_RESPONSE 14\r
+#define SSH2_AGENTC_ADD_IDENTITY 17\r
+#define SSH2_AGENTC_REMOVE_IDENTITY 18\r
+#define SSH2_AGENTC_REMOVE_ALL_IDENTITIES 19\r
+\r
+/*\r
+ * Need this to warn about support for the original SSH-2 keyfile\r
+ * format.\r
+ */\r
+void old_keyfile_warning(void);\r
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