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00021 #ifndef _LIBSSH_H
00022 #define _LIBSSH_H
00023 #include <unistd.h>
00024 #include <sys/select.h>
00025 #include <inttypes.h>
00026
00027 #define LIBSSH_VERSION "libssh-0.2"
00028
00029 #ifdef __cplusplus
00030 extern "C" {
00031 #endif
00032
00033 typedef struct string_struct STRING;
00034 typedef struct buffer_struct BUFFER;
00035 typedef struct public_key_struct PUBLIC_KEY;
00036 typedef struct private_key_struct PRIVATE_KEY;
00037 typedef struct ssh_options_struct SSH_OPTIONS;
00038 typedef struct channel_struct CHANNEL;
00039 typedef struct ssh_session SSH_SESSION;
00040 typedef struct ssh_kbdint SSH_KBDINT;
00041
00042
00043 typedef uint32_t u32;
00044 typedef uint16_t u16;
00045 typedef uint64_t u64;
00046 typedef uint8_t u8;
00047
00048
00049 #define SSH_KEX 0
00050 #define SSH_HOSTKEYS 1
00051 #define SSH_CRYPT_C_S 2
00052 #define SSH_CRYPT_S_C 3
00053 #define SSH_MAC_C_S 4
00054 #define SSH_MAC_S_C 5
00055 #define SSH_COMP_C_S 6
00056 #define SSH_COMP_S_C 7
00057 #define SSH_LANG_C_S 8
00058 #define SSH_LANG_S_C 9
00059
00060 #define SSH_CRYPT 2
00061 #define SSH_MAC 3
00062 #define SSH_COMP 4
00063 #define SSH_LANG 5
00064
00065 #define SSH_AUTH_SUCCESS 0
00066 #define SSH_AUTH_DENIED 1
00067 #define SSH_AUTH_PARTIAL 2
00068 #define SSH_AUTH_INFO 3
00069 #define SSH_AUTH_ERROR -1
00070
00071
00072
00073 #define SSH_CLOSED (1<<0)
00074 #define SSH_READ_PENDING (1<<1)
00075 #define SSH_CLOSED_ERROR (1<<2)
00076
00077 #define SSH_SERVER_ERROR -1
00078 #define SSH_SERVER_NOT_KNOWN 0
00079 #define SSH_SERVER_KNOWN_OK 1
00080 #define SSH_SERVER_KNOWN_CHANGED 2
00081 #define SSH_SERVER_FOUND_OTHER 3
00082
00083 #ifndef MD5_DIGEST_LEN
00084 #define MD5_DIGEST_LEN 16
00085 #endif
00086
00087
00088 #define SSH_NO_ERROR 0
00089 #define SSH_REQUEST_DENIED 1
00090 #define SSH_FATAL 2
00091 #define SSH_EINTR 3
00092
00093
00094 #define SSH_OK 0
00095 #define SSH_ERROR -1
00096 #define SSH_AGAIN 1
00097
00098 char *ssh_get_error(void *error);
00099 int ssh_get_error_code(void *error);
00100 void ssh_say(int priority,char *format,...);
00101 void ssh_set_verbosity(int num);
00102
00103
00104
00105
00106
00107
00108
00109
00110
00111 SSH_SESSION *ssh_new();
00112 void ssh_set_options(SSH_SESSION *session, SSH_OPTIONS *options);
00113 int ssh_get_fd(SSH_SESSION *session);
00114 void ssh_silent_disconnect(SSH_SESSION *session);
00115 int ssh_get_version(SSH_SESSION *session);
00116 void ssh_set_fd_toread(SSH_SESSION *session);
00117 void ssh_set_fd_towrite(SSH_SESSION *session);
00118 void ssh_set_fd_except(SSH_SESSION *session);
00119
00120
00121
00122 int ssh_connect(SSH_SESSION *session);
00123 void ssh_disconnect(SSH_SESSION *session);
00124 int ssh_service_request(SSH_SESSION *session,char *service);
00125 char *ssh_get_issue_banner(SSH_SESSION *session);
00126
00127 const char *ssh_copyright();
00128
00129
00130
00131
00132 STRING *string_from_char(char *what);
00133
00134 int string_len(STRING *str);
00135 STRING *string_new(unsigned int size);
00136
00137 void string_fill(STRING *str,void *data,int len);
00138
00139 char *string_to_char(STRING *str);
00140 STRING *string_copy(STRING *str);
00141
00142 void string_burn(STRING *str);
00143 void *string_data(STRING *str);
00144
00145
00146 void ssh_crypto_init();
00147
00148
00149 void ssh_print_hexa(char *descr,unsigned char *what, int len);
00150 int ssh_get_random(void *where,int len,int strong);
00151
00152
00153 int ssh_get_pubkey_hash(SSH_SESSION *session,unsigned char hash[MD5_DIGEST_LEN]);
00154 STRING *ssh_get_pubkey(SSH_SESSION *session);
00155
00156
00157 int ssh_fd_poll(SSH_SESSION *session,int *write, int *except);
00158 int ssh_select(CHANNEL **channels,CHANNEL **outchannels, int maxfd, fd_set *readfds, struct timeval *timeout);
00159
00160 void publickey_free(PUBLIC_KEY *key);
00161
00162
00163
00164 PRIVATE_KEY *privatekey_from_file(SSH_SESSION *session,char *filename,int type,char *passphrase);
00165 STRING *publickey_to_string(PUBLIC_KEY *key);
00166 PUBLIC_KEY *publickey_from_privatekey(PRIVATE_KEY *prv);
00167 void private_key_free(PRIVATE_KEY *prv);
00168 STRING *publickey_from_file(SSH_SESSION *session, char *filename,int *_type);
00169 STRING *publickey_from_next_file(SSH_SESSION *session,char **pub_keys_path,char **keys_path,
00170 char **privkeyfile,int *type,int *count);
00171 int ssh_is_server_known(SSH_SESSION *session);
00172 int ssh_write_knownhost(SSH_SESSION *session);
00173
00174
00175
00176 CHANNEL *channel_new(SSH_SESSION *session);
00177 int channel_open_forward(CHANNEL *channel,char *remotehost, int remoteport, char *sourcehost, int localport);
00178 int channel_open_session(CHANNEL *channel);
00179 void channel_free(CHANNEL *channel);
00180 int channel_request_pty(CHANNEL *channel);
00181 int channel_request_pty_size(CHANNEL *channel, char *term,int cols, int rows);
00182 int channel_change_pty_size(CHANNEL *channel,int cols,int rows);
00183 int channel_request_shell(CHANNEL *channel);
00184 int channel_request_subsystem(CHANNEL *channel, char *system);
00185 int channel_request_env(CHANNEL *channel,char *name, char *value);
00186 int channel_request_exec(CHANNEL *channel, char *cmd);
00187 int channel_request_sftp(CHANNEL *channel);
00188 int channel_write(CHANNEL *channel,void *data,int len);
00189 int channel_send_eof(CHANNEL *channel);
00190 int channel_read(CHANNEL *channel, BUFFER *buffer,int bytes,int is_stderr);
00191 int channel_poll(CHANNEL *channel, int is_stderr);
00192 int channel_close(CHANNEL *channel);
00193 int channel_read_nonblocking(CHANNEL *channel, char *dest, int len, int is_stderr);
00194 int channel_is_open(CHANNEL *channel);
00195 int channel_is_closed(CHANNEL *channel);
00196 int channel_select(CHANNEL **readchans, CHANNEL **writechans, CHANNEL **exceptchans, struct
00197 timeval * timeout);
00198
00199
00200 SSH_OPTIONS *ssh_options_new();
00201 SSH_OPTIONS *ssh_options_copy(SSH_OPTIONS *opt);
00202 int ssh_options_set_wanted_algos(SSH_OPTIONS *opt,int algo, char *list);
00203 void ssh_options_set_username(SSH_OPTIONS *opt,char *username);
00204 void ssh_options_set_port(SSH_OPTIONS *opt, unsigned int port);
00205 int ssh_options_getopt(SSH_OPTIONS *options, int *argcptr, char **argv);
00206 void ssh_options_set_host(SSH_OPTIONS *opt, const char *host);
00207 void ssh_options_set_fd(SSH_OPTIONS *opt, int fd);
00208 void ssh_options_set_bind(SSH_OPTIONS *opt, char *bindaddr,int port);
00209 void ssh_options_set_identity(SSH_OPTIONS *opt, char *identity);
00210 void ssh_options_set_status_callback(SSH_OPTIONS *opt, void (*callback)
00211 (void *arg, float status), void *arg);
00212 void ssh_options_set_timeout(SSH_OPTIONS *opt, long seconds, long usec);
00213 void ssh_options_set_ssh_dir(SSH_OPTIONS *opt, char *dir);
00214 void ssh_options_set_known_hosts_file(SSH_OPTIONS *opt, char *dir);
00215 void ssh_options_allow_ssh1(SSH_OPTIONS *opt, int allow);
00216 void ssh_options_allow_ssh2(SSH_OPTIONS *opt, int allow);
00217 void ssh_options_set_dsa_server_key(SSH_OPTIONS *opt, char *dsakey);
00218 void ssh_options_set_rsa_server_key(SSH_OPTIONS *opt, char *rsakey);
00219
00220
00221
00222
00225 BUFFER *buffer_new();
00226 void buffer_free(BUFFER *buffer);
00227
00228 void *buffer_get(BUFFER *buffer);
00229
00230 int buffer_get_len(BUFFER *buffer);
00231
00232
00233
00234
00235
00236
00237
00238 int ssh_userauth_none(SSH_SESSION *session,char *username);
00239 int ssh_userauth_password(SSH_SESSION *session,char *username,char *password);
00240 int ssh_userauth_offer_pubkey(SSH_SESSION *session, char *username,int type, STRING *publickey);
00241 int ssh_userauth_pubkey(SSH_SESSION *session, char *username, STRING *publickey, PRIVATE_KEY *privatekey);
00242 int ssh_userauth_autopubkey(SSH_SESSION *session);
00243 int ssh_userauth_kbdint(SSH_SESSION *session, char *user, char *submethods);
00244 int ssh_userauth_kbdint_getnprompts(SSH_SESSION *session);
00245 char *ssh_userauth_kbdint_getname(SSH_SESSION *session);
00246 char *ssh_userauth_kbdint_getinstruction(SSH_SESSION *session);
00247 char *ssh_userauth_kbdint_getprompt(SSH_SESSION *session, int i, char *echo);
00248 void ssh_userauth_kbdint_setanswer(SSH_SESSION *session, unsigned int i, char *answer);
00249
00250
00251
00252 int ssh_finalize();
00253 #ifdef __cplusplus
00254 } ;
00255 #endif
00256 #endif