bump for release -- 0.11

after processing 'exit-status' message

README

@@ -4,10 +4,19 @@ libssh2 - SSH2 library
 Version 0.11
 ------------
 
+  Added libssh2_chnnale_get_exit_status() -- Mikhail
+
+  Added libssh2_channel_wait_closed() -- Mikhail
+
+  Added libssh2_userauth_keyboard_interactive_ex() -- Mikhail
+
   Added libssh2_channel_receive_window_adjust() to be able to increase the size of the receive window.
 
   Added queueing for small window_adjust packets to avoid unnecessary packet conversation.
 
+  Fixed libssh2_sftp_rename_ex() to only send flags parameter if version >= 5 negotiated
+	(not currently possible, but will be and might as well keep the API consistent).
+
 Version 0.10
 ------------
 

configure.in

@@ -1,5 +1,5 @@
 # AC_PREREQ(2.57)
-AC_INIT(libssh2,0.10,sarag@libssh2.org)
+AC_INIT(libssh2,0.11,sarag@libssh2.org)
 AC_CONFIG_SRCDIR([src])
 AC_CONFIG_HEADER([include/libssh2_config.h])
 

include/libssh2.h

@@ -38,6 +38,10 @@
 #ifndef LIBSSH2_H
 #define LIBSSH2_H 1
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #include <stddef.h>
 #include <string.h>
 #include <sys/stat.h>
@@ -67,8 +71,8 @@ typedef unsigned long long libssh2_uint64_t;
 typedef long long libssh2_int64_t;
 #endif
 
-#define LIBSSH2_VERSION								"0.10"
-#define LIBSSH2_APINO								200503281457
+#define LIBSSH2_VERSION								"0.11"
+#define LIBSSH2_APINO								200507041839
 
 /* Part of every banner, user specified or not */
 #define LIBSSH2_SSH_BANNER							"SSH-2.0-libssh2_" LIBSSH2_VERSION
@@ -107,6 +111,22 @@ typedef long long libssh2_int64_t;
 #define LIBSSH2_REALLOC_FUNC(name)					void *name(void *ptr, size_t count, void **abstract)
 #define LIBSSH2_FREE_FUNC(name)						void name(void *ptr, void **abstract)
 
+typedef struct _LIBSSH2_USERAUTH_KBDINT_PROMPT
+{
+	char* text;
+	unsigned int length;
+	unsigned char echo;
+} LIBSSH2_USERAUTH_KBDINT_PROMPT;
+
+typedef struct _LIBSSH2_USERAUTH_KBDINT_RESPONSE
+{
+	char* text;
+	unsigned int length;
+} LIBSSH2_USERAUTH_KBDINT_RESPONSE;
+
+/* 'keyboard-interactive' authentication callback */
+#define LIBSSH2_USERAUTH_KBDINT_RESPONSE_FUNC(name_) void name_(const char* name, int name_len, const char* instruction, int instruction_len, int num_prompts, const LIBSSH2_USERAUTH_KBDINT_PROMPT* prompts, LIBSSH2_USERAUTH_KBDINT_RESPONSE* responses, void **abstract)
+
 /* Callbacks for special SSH packets */
 #define LIBSSH2_IGNORE_FUNC(name)					void name(LIBSSH2_SESSION *session, const char *message, int message_len, void **abstract)
 #define LIBSSH2_DEBUG_FUNC(name)					void name(LIBSSH2_SESSION *session, int always_display, const char *message, int message_len, const char *language, int language_len,void **abstract)
@@ -240,40 +260,51 @@ LIBSSH2_API LIBSSH2_SESSION *libssh2_session_init_ex(LIBSSH2_ALLOC_FUNC((*my_all
 LIBSSH2_API void **libssh2_session_abstract(LIBSSH2_SESSION *session);
 
 LIBSSH2_API void *libssh2_session_callback_set(LIBSSH2_SESSION *session, int cbtype, void *callback);
-LIBSSH2_API int libssh2_banner_set(LIBSSH2_SESSION *session, char *banner);
+LIBSSH2_API int libssh2_banner_set(LIBSSH2_SESSION *session, const char *banner);
 
 LIBSSH2_API int libssh2_session_startup(LIBSSH2_SESSION *session, int socket);
-LIBSSH2_API int libssh2_session_disconnect_ex(LIBSSH2_SESSION *session, int reason, char *description, char *lang);
+LIBSSH2_API int libssh2_session_disconnect_ex(LIBSSH2_SESSION *session, int reason, const char *description, const char *lang);
 #define libssh2_session_disconnect(session, description)	libssh2_session_disconnect_ex((session), SSH_DISCONNECT_BY_APPLICATION, (description), "")
 LIBSSH2_API void libssh2_session_free(LIBSSH2_SESSION *session);
 
-LIBSSH2_API char *libssh2_hostkey_hash(LIBSSH2_SESSION *session, int hash_type);
+LIBSSH2_API const char *libssh2_hostkey_hash(LIBSSH2_SESSION *session, int hash_type);
 
-LIBSSH2_API int libssh2_session_method_pref(LIBSSH2_SESSION *session, int method_type, char *prefs);
-LIBSSH2_API char *libssh2_session_methods(LIBSSH2_SESSION *session, int method_type);
+LIBSSH2_API int libssh2_session_method_pref(LIBSSH2_SESSION *session, int method_type, const char *prefs);
+LIBSSH2_API const char *libssh2_session_methods(LIBSSH2_SESSION *session, int method_type);
 LIBSSH2_API int libssh2_session_last_error(LIBSSH2_SESSION *session, char **errmsg, int *errmsg_len, int want_buf);
 
 LIBSSH2_API int libssh2_session_flag(LIBSSH2_SESSION *session, int flag, int value);
 
 /* Userauth API */
-LIBSSH2_API char *libssh2_userauth_list(LIBSSH2_SESSION *session, char *username, int username_len);
+LIBSSH2_API char *libssh2_userauth_list(LIBSSH2_SESSION *session, const char *username, int username_len);
 LIBSSH2_API int libssh2_userauth_authenticated(LIBSSH2_SESSION *session);
-LIBSSH2_API int libssh2_userauth_password_ex(LIBSSH2_SESSION *session, char *username, int username_len, char *password, int password_len, LIBSSH2_PASSWD_CHANGEREQ_FUNC((*passwd_change_cb)));
+LIBSSH2_API int libssh2_userauth_password_ex(LIBSSH2_SESSION *session, const char *username, int username_len, const char *password, int password_len, LIBSSH2_PASSWD_CHANGEREQ_FUNC((*passwd_change_cb)));
 #define libssh2_userauth_password(session, username, password)	libssh2_userauth_password_ex((session), (username), strlen(username), (password), strlen(password), NULL)
 
-LIBSSH2_API int libssh2_userauth_publickey_fromfile_ex(LIBSSH2_SESSION *session, char *username, int username_len,
-																				 char *publickey, char *privatekey,
-																				 char *passphrase);
+LIBSSH2_API int libssh2_userauth_publickey_fromfile_ex(LIBSSH2_SESSION *session, const char *username, int username_len,
+																				 const char *publickey, const char *privatekey,
+																				 const char *passphrase);
 #define libssh2_userauth_publickey_fromfile(session, username, publickey, privatekey, passphrase)	\
 		libssh2_userauth_publickey_fromfile_ex((session), (username), strlen(username), (publickey), (privatekey), (passphrase))
-LIBSSH2_API int libssh2_userauth_hostbased_fromfile_ex(LIBSSH2_SESSION *session, char *username, int username_len,
-																				 char *publickey, char *privatekey,
-																				 char *passphrase,
-																				 char *hostname, int hostname_len,
-																				 char *local_username, int local_username_len);
+LIBSSH2_API int libssh2_userauth_hostbased_fromfile_ex(LIBSSH2_SESSION *session, const char *username, int username_len,
+																				 const char *publickey, const char *privatekey,
+																				 const char *passphrase,
+																				 const char *hostname, int hostname_len,
+																				 const char *local_username, int local_username_len);
 #define libssh2_userauth_hostbased_fromfile(session, username, publickey, privatekey, passphrase, hostname)	\
 		libssh2_userauth_hostbased_fromfile_ex((session), (username), strlen(username), (publickey), (privatekey), (passphrase), (hostname), strlen(hostname), (username), strlen(username))
 
+/*
+ * response_callback is provided with filled by library prompts array,
+ * but client must allocate and fill individual responses. Responses
+ * array is already allocated. Responses data will be freed by libssh2
+ * after callback return, but before subsequent callback invokation.
+ */
+LIBSSH2_API int libssh2_userauth_keyboard_interactive_ex(LIBSSH2_SESSION* session, const char *username, int username_len,
+														 LIBSSH2_USERAUTH_KBDINT_RESPONSE_FUNC((*response_callback)));
+#define libssh2_userauth_keyboard_interactive(session, username, response_callback) \
+        libssh2_userauth_keyboard_interactive_ex((session), (username), strlen(username), (response_callback))
+
 LIBSSH2_API int libssh2_poll(LIBSSH2_POLLFD *fds, unsigned int nfds, long timeout);
 
 /* Channel API */
@@ -288,11 +319,11 @@ LIBSSH2_API int libssh2_poll(LIBSSH2_POLLFD *fds, unsigned int nfds, long timeou
 
 #define SSH_EXTENDED_DATA_STDERR 1
 
-LIBSSH2_API LIBSSH2_CHANNEL *libssh2_channel_open_ex(LIBSSH2_SESSION *session, char *channel_type, int channel_type_len, int window_size, int packet_size, char *message, int message_len);
+LIBSSH2_API LIBSSH2_CHANNEL *libssh2_channel_open_ex(LIBSSH2_SESSION *session, const char *channel_type, int channel_type_len, int window_size, int packet_size, const char *message, int message_len);
 #define libssh2_channel_open_session(session)	libssh2_channel_open_ex((session), "session", sizeof("session") - 1, LIBSSH2_CHANNEL_WINDOW_DEFAULT, LIBSSH2_CHANNEL_PACKET_DEFAULT, NULL, 0)
 
 LIBSSH2_API LIBSSH2_CHANNEL *libssh2_channel_direct_tcpip_ex(LIBSSH2_SESSION *session, char *host, int port, char *shost, int sport);
-#define libssh2_channel_direct_tcpip(session, host, port)	libssh2_channel_direct_tcpip_ex((session), (host), (port), "127.0.0.1", 22) 
+#define libssh2_channel_direct_tcpip(session, host, port)	libssh2_channel_direct_tcpip_ex((session), (host), (port), "127.0.0.1", 22)
 
 LIBSSH2_API LIBSSH2_LISTENER *libssh2_channel_forward_listen_ex(LIBSSH2_SESSION *session, char *host, int port, int *bound_port, int queue_maxsize);
 #define libssh2_channel_forward_listen(session, port)			libssh2_channel_forward_listen_ex((session), NULL, (port), NULL, 16)
@@ -310,7 +341,7 @@ LIBSSH2_API int libssh2_channel_request_pty_ex(LIBSSH2_CHANNEL *channel, char *t
 LIBSSH2_API int libssh2_channel_x11_req_ex(LIBSSH2_CHANNEL *channel, int single_connection, char *auth_proto, char *auth_cookie, int screen_number);
 #define libssh2_channel_x11_req(channel, screen_number)	libssh2_channel_x11_req_ex((channel), 0, NULL, NULL, (screen_number))
 
-LIBSSH2_API int libssh2_channel_process_startup(LIBSSH2_CHANNEL *channel, char *request, int request_len, char *message, int message_len);
+LIBSSH2_API int libssh2_channel_process_startup(LIBSSH2_CHANNEL *channel, const char *request, int request_len, const char *message, int message_len);
 #define libssh2_channel_shell(channel)					libssh2_channel_process_startup((channel), "shell", sizeof("shell") - 1, NULL, 0)
 #define libssh2_channel_exec(channel, command)			libssh2_channel_process_startup((channel), "exec", sizeof("exec") - 1, (command), strlen(command))
 #define libssh2_channel_subsystem(channel, subsystem)	libssh2_channel_process_startup((channel), "subsystem", sizeof("subsystem") - 1, (subsystem), strlen(subsystem))
@@ -319,6 +350,8 @@ LIBSSH2_API int libssh2_channel_read_ex(LIBSSH2_CHANNEL *channel, int stream_id,
 #define libssh2_channel_read(channel, buf, buflen)					libssh2_channel_read_ex((channel), 0, (buf), (buflen))
 #define libssh2_channel_read_stderr(channel, buf, buflen)			libssh2_channel_read_ex((channel), SSH_EXTENDED_DATA_STDERR, (buf), (buflen))
 
+LIBSSH2_API int libssh2_poll_channel_read(LIBSSH2_CHANNEL *channel, int extended);
+
 LIBSSH2_API unsigned long libssh2_channel_window_read_ex(LIBSSH2_CHANNEL *channel, unsigned long *read_avail, unsigned long *window_size_initial);
 #define libssh2_channel_window_read(channel)			libssh2_channel_window_read_ex((channel), NULL, NULL)
 
@@ -335,7 +368,7 @@ LIBSSH2_API void libssh2_channel_set_blocking(LIBSSH2_CHANNEL *channel, int bloc
 LIBSSH2_API void libssh2_channel_handle_extended_data(LIBSSH2_CHANNEL *channel, int ignore_mode);
 /* libssh2_channel_ignore_extended_data() is defined below for BC with version 0.1
  * Future uses should use libssh2_channel_handle_extended_data() directly
- * if LIBSSH2_CHANNEL_EXTENDED_DATA_MERGE is passed, extended data will be read (FIFO) from the standard data channel 
+ * if LIBSSH2_CHANNEL_EXTENDED_DATA_MERGE is passed, extended data will be read (FIFO) from the standard data channel
  */
 /* DEPRECATED */
 #define libssh2_channel_ignore_extended_data(channel, ignore)		libssh2_channel_handle_extended_data((channel), (ignore) ? LIBSSH2_CHANNEL_EXTENDED_DATA_IGNORE : LIBSSH2_CHANNEL_EXTENDED_DATA_NORMAL )
@@ -345,16 +378,22 @@ LIBSSH2_API void libssh2_channel_handle_extended_data(LIBSSH2_CHANNEL *channel,
 LIBSSH2_API int libssh2_channel_flush_ex(LIBSSH2_CHANNEL *channel, int streamid);
 #define libssh2_channel_flush(channel)			libssh2_channel_flush_ex((channel), 0)
 #define libssh2_channel_flush_stderr(channel)	libssh2_channel_flush_ex((channel), SSH_EXTENDED_DATA_STDERR)
+LIBSSH2_API int libssh2_channel_get_exit_status(LIBSSH2_CHANNEL* channel);
 
 LIBSSH2_API int libssh2_channel_send_eof(LIBSSH2_CHANNEL *channel);
 LIBSSH2_API int libssh2_channel_eof(LIBSSH2_CHANNEL *channel);
 LIBSSH2_API int libssh2_channel_close(LIBSSH2_CHANNEL *channel);
+LIBSSH2_API int libssh2_channel_wait_closed(LIBSSH2_CHANNEL *channel);
 LIBSSH2_API int libssh2_channel_free(LIBSSH2_CHANNEL *channel);
 
-LIBSSH2_API LIBSSH2_CHANNEL *libssh2_scp_recv(LIBSSH2_SESSION *session, char *path, struct stat *sb);
-LIBSSH2_API LIBSSH2_CHANNEL *libssh2_scp_send_ex(LIBSSH2_SESSION *session, char *path, int mode, size_t size, long mtime, long atime);
+LIBSSH2_API LIBSSH2_CHANNEL *libssh2_scp_recv(LIBSSH2_SESSION *session, const char *path, struct stat *sb);
+LIBSSH2_API LIBSSH2_CHANNEL *libssh2_scp_send_ex(LIBSSH2_SESSION *session, const char *path, int mode, size_t size, long mtime, long atime);
 #define libssh2_scp_send(session, path, mode, size)					libssh2_scp_send_ex((session), (path), (mode), (size), 0, 0)
 
 LIBSSH2_API int libssh2_base64_decode(LIBSSH2_SESSION *session, char **dest, int *dest_len, char *src, int src_len);
 
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+
 #endif /* LIBSSH2_H */

include/libssh2_priv.h

@@ -112,6 +112,9 @@ struct _LIBSSH2_CHANNEL {
 
 	int blocking;
 
+	/* channel's program exit status */
+	int exit_status;
+
 	libssh2_channel_data local, remote;
 	unsigned long adjust_queue; /* Amount of bytes to be refunded to receive window (but not yet sent) */
 
@@ -264,7 +267,7 @@ struct _LIBSSH2_HOSTKEY_METHOD {
 	unsigned long hash_len;
 
 	int (*init)(LIBSSH2_SESSION *session, unsigned char *hostkey_data, unsigned long hostkey_data_len, void **abstract);
-	int (*initPEM)(LIBSSH2_SESSION *session, unsigned char *privkeyfile, unsigned char *passphrase, void **abstract);
+	int (*initPEM)(LIBSSH2_SESSION *session, unsigned const char *privkeyfile, unsigned const char *passphrase, void **abstract);
 	int (*sig_verify)(LIBSSH2_SESSION *session, const unsigned char *sig, unsigned long sig_len, const unsigned char *m, unsigned long m_len, void **abstract);
 	int (*sign)(LIBSSH2_SESSION *session, unsigned char **signature, unsigned long *signature_len, const unsigned char *data, unsigned long data_len, void **abstract);
 	int (*signv)(LIBSSH2_SESSION *session, unsigned char **signature, unsigned long *signature_len, unsigned long veccount, const struct iovec datavec[], void **abstract);
@@ -407,6 +410,9 @@ void _libssh2_debug(LIBSSH2_SESSION *session, int context, const char *format, .
 #define SSH_MSG_USERAUTH_PK_OK						60
 /* "password" method */
 #define SSH_MSG_USERAUTH_PASSWD_CHANGEREQ			60
+/* "keyboard-interactive" method */
+#define SSH_MSG_USERAUTH_INFO_REQUEST				60
+#define SSH_MSG_USERAUTH_INFO_RESPONSE				61
 
 /* Channels */
 #define SSH_MSG_GLOBAL_REQUEST						80

src/channel.c

@@ -7,17 +7,17 @@
  *
  *   Redistributions of source code must retain the above
  *   copyright notice, this list of conditions and the
- *   following disclaimer. 
+ *   following disclaimer.
  *
  *   Redistributions in binary form must reproduce the above
  *   copyright notice, this list of conditions and the following
  *   disclaimer in the documentation and/or other materials
- *   provided with the distribution. 
+ *   provided with the distribution.
  *
  *   Neither the name of the copyright holder nor the names
- *   of any other contributors may be used to endorse or 
- *   promote products derived from this software without 
- *   specific prior written permission. 
+ *   of any other contributors may be used to endorse or
+ *   promote products derived from this software without
+ *   specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
  * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
@@ -99,20 +99,20 @@ LIBSSH2_CHANNEL *libssh2_channel_locate(LIBSSH2_SESSION *session, unsigned long
 	}	\
 	(channel)->next = NULL;	\
 	(session)->channels.tail = (channel);	\
-	(channel)->session = (session);	\
+	(channel)->session = (session); \
 }
 
 /* {{{ libssh2_channel_open_session
  * Establish a generic session channel
  */
-LIBSSH2_API LIBSSH2_CHANNEL *libssh2_channel_open_ex(LIBSSH2_SESSION *session, char *channel_type, int channel_type_len, int window_size, int packet_size,
-																			   char *message, int message_len)
+LIBSSH2_API LIBSSH2_CHANNEL *libssh2_channel_open_ex(LIBSSH2_SESSION *session, const char *channel_type, int channel_type_len, int window_size, int packet_size,
+																			   const char *message, int message_len)
 {
 	unsigned char reply_codes[3] = { SSH_MSG_CHANNEL_OPEN_CONFIRMATION, SSH_MSG_CHANNEL_OPEN_FAILURE, 0 };
 	LIBSSH2_CHANNEL *channel = NULL;
 	unsigned long local_channel = libssh2_channel_nextid(session);
 	unsigned char *s, *packet = NULL;
-	unsigned long packet_len = channel_type_len + message_len + 17; /* packet_type(1) + channel_type_len(4) + sender_channel(4) + 
+	unsigned long packet_len = channel_type_len + message_len + 17; /* packet_type(1) + channel_type_len(4) + sender_channel(4) +
 																	   window_size(4) + packet_size(4) */
 	unsigned char *data = NULL;
 	unsigned long data_len;
@@ -468,7 +468,7 @@ LIBSSH2_API int libssh2_channel_setenv_ex(LIBSSH2_CHANNEL *channel, char *varnam
 	LIBSSH2_SESSION *session = channel->session;
 	unsigned char *s, *packet, *data, reply_codes[3] = { SSH_MSG_CHANNEL_SUCCESS, SSH_MSG_CHANNEL_FAILURE, 0 }, local_channel[4];
 	unsigned long data_len;
-	unsigned long packet_len = varname_len + value_len + 21; /* packet_type(1) + channel_id(4) + request_len(4) + request(3)"env" + 
+	unsigned long packet_len = varname_len + value_len + 21; /* packet_type(1) + channel_id(4) + request_len(4) + request(3)"env" +
 																want_reply(1) + varname_len(4) + value_len(4) */
 
 #ifdef LIBSSH2_DEBUG_CONNECTION
@@ -528,7 +528,7 @@ LIBSSH2_API int libssh2_channel_request_pty_ex(LIBSSH2_CHANNEL *channel, char *t
 	LIBSSH2_SESSION *session = channel->session;
 	unsigned char *s, *packet, *data, reply_codes[3] = { SSH_MSG_CHANNEL_SUCCESS, SSH_MSG_CHANNEL_FAILURE, 0 }, local_channel[4];
 	unsigned long data_len;
-	unsigned long packet_len = term_len + modes_len + 41; /*  packet_type(1) + channel(4) + pty_req_len(4) + "pty_req"(7) + want_reply(1) + 
+	unsigned long packet_len = term_len + modes_len + 41; /*  packet_type(1) + channel(4) + pty_req_len(4) + "pty_req"(7) + want_reply(1) +
 															  term_len(4) + width(4) + height(4) + width_px(4) + height_px(4) + modes_len(4) */
 
 #ifdef LIBSSH2_DEBUG_CONNECTION
@@ -598,7 +598,7 @@ LIBSSH2_API int libssh2_channel_x11_req_ex(LIBSSH2_CHANNEL *channel, int single_
 	unsigned long data_len;
 	unsigned long proto_len = auth_proto ? strlen(auth_proto) : (sizeof("MIT-MAGIC-COOKIE-1") - 1);
 	unsigned long cookie_len = auth_cookie ? strlen(auth_cookie) : LIBSSH2_X11_RANDOM_COOKIE_LEN;
-	unsigned long packet_len = proto_len + cookie_len + 41; /*  packet_type(1) + channel(4) + x11_req_len(4) + "x11-req"(7) + want_reply(1) + 
+	unsigned long packet_len = proto_len + cookie_len + 41; /*  packet_type(1) + channel(4) + x11_req_len(4) + "x11-req"(7) + want_reply(1) +
 																single_cnx(4) + proto_len(4) + cookie_len(4) + screen_num(4) */
 
 #ifdef LIBSSH2_DEBUG_CONNECTION
@@ -664,7 +664,7 @@ LIBSSH2_API int libssh2_channel_x11_req_ex(LIBSSH2_CHANNEL *channel, int single_
 /* {{{ libssh2_channel_process_startup
  * Primitive for libssh2_channel_(shell|exec|subsystem)
  */
-LIBSSH2_API int libssh2_channel_process_startup(LIBSSH2_CHANNEL *channel, char *request, int request_len, char *message, int message_len)
+LIBSSH2_API int libssh2_channel_process_startup(LIBSSH2_CHANNEL *channel, const char *request, int request_len, const char *message, int message_len)
 {
 	LIBSSH2_SESSION *session = channel->session;
 	unsigned char *s, *packet, *data, reply_codes[3] = { SSH_MSG_CHANNEL_SUCCESS, SSH_MSG_CHANNEL_FAILURE, 0 }, local_channel[4];
@@ -787,6 +787,16 @@ LIBSSH2_API int libssh2_channel_flush_ex(LIBSSH2_CHANNEL *channel, int streamid)
 }
 /* }}} */
 
+/* {{{ libssh2_channel_get_exit_status
+ * Return the channel's program exit status
+ */
+LIBSSH2_API int libssh2_channel_get_exit_status(LIBSSH2_CHANNEL* channel)
+{
+	return channel->exit_status;
+}
+
+/* }}} */
+
 /* {{{ libssh2_channel_receive_window_adjust
  * Adjust the receive window for a channel by adjustment bytes
  * If the amount to be adjusted is less than LIBSSH2_CHANNEL_MINADJUST and force is 0
@@ -1057,7 +1067,7 @@ LIBSSH2_API int libssh2_channel_eof(LIBSSH2_CHANNEL *channel)
 	LIBSSH2_PACKET *packet = session->packets.head;
 
 	while (packet) {
-		if (((packet->data[0] == SSH_MSG_CHANNEL_DATA) || (packet->data[0] == SSH_MSG_CHANNEL_EXTENDED_DATA)) && 
+		if (((packet->data[0] == SSH_MSG_CHANNEL_DATA) || (packet->data[0] == SSH_MSG_CHANNEL_EXTENDED_DATA)) &&
 			(channel->local.id == libssh2_ntohu32(packet->data + 1))) {
 			/* There's data waiting to be read yet, mask the EOF status */
 			return 0;
@@ -1104,6 +1114,35 @@ LIBSSH2_API int libssh2_channel_close(LIBSSH2_CHANNEL *channel)
 }
 /* }}} */
 
+/* {{{ libssh2_channel_wait_closed
+ * Awaiting channel close after EOF
+ */
+LIBSSH2_API int libssh2_channel_wait_closed(LIBSSH2_CHANNEL *channel)
+{
+	LIBSSH2_SESSION* session = channel->session;
+
+	if (!libssh2_channel_eof(channel)) {
+		libssh2_error(session, LIBSSH2_ERROR_INVAL, "libssh2_channel_wait_closed() invoked when channel is not in EOF state", 0);
+		return -1;
+	}
+
+#ifdef LIBSSH2_DEBUG_CONNECTION
+	_libssh2_debug(session, LIBSSH2_DBG_CONN, "Awaiting close of channel %lu/%lu", channel->local.id, channel->remote.id);
+#endif
+
+	/* while channel is not closed, read more
+	 * packets from the network.
+	 * Either or channel will be closed
+	 * or network timeout will occur
+	 */
+	while (!channel->remote.close && libssh2_packet_read(session, 1) > 0)
+		;
+
+	return 1;
+}
+/* }}} */
+
+
 /* {{{ libssh2_channel_free
  * Make sure a channel is closed, then remove the channel from the session and free its resource(s)
  */
@@ -1122,7 +1161,7 @@ LIBSSH2_API int libssh2_channel_free(LIBSSH2_CHANNEL *channel)
 		return -1;
 	}
 
-	/* channel->remote.close *might* not be set yet, Well... 
+	/* channel->remote.close *might* not be set yet, Well...
 	 * We've sent the close packet, what more do you want?
 	 * Just let packet_add ignore it when it finally arrives
 	 */

src/hostkey.c

@@ -109,7 +109,7 @@ static int libssh2_hostkey_method_ssh_rsadsa_passphrase_cb(char *buf, int size,
 /* {{{ libssh2_hostkey_method_ssh_rsa_initPEM
  * Load a Private Key from a PEM file
  */
-static int libssh2_hostkey_method_ssh_rsa_initPEM(LIBSSH2_SESSION *session, unsigned char *privkeyfile, unsigned char *passphrase, void **abstract)
+static int libssh2_hostkey_method_ssh_rsa_initPEM(LIBSSH2_SESSION *session, unsigned const char *privkeyfile, unsigned const char *passphrase, void **abstract)
 {
 	RSA *rsactx;
 	FILE *fp;
@@ -131,7 +131,7 @@ static int libssh2_hostkey_method_ssh_rsa_initPEM(LIBSSH2_SESSION *session, unsi
 		 */
 		OpenSSL_add_all_ciphers();
 	}
-	rsactx = PEM_read_RSAPrivateKey(fp, NULL, (void*)libssh2_hostkey_method_ssh_rsadsa_passphrase_cb, passphrase);
+	rsactx = PEM_read_RSAPrivateKey(fp, NULL, (void*)libssh2_hostkey_method_ssh_rsadsa_passphrase_cb, (void*)passphrase);
 	if (!rsactx) {
 		fclose(fp);
 		return -1;
@@ -323,7 +323,7 @@ static int libssh2_hostkey_method_ssh_dss_init(LIBSSH2_SESSION *session, unsigne
 /* {{{ libssh2_hostkey_method_ssh_dss_initPEM
  * Load a Private Key from a PEM file
  */
-static int libssh2_hostkey_method_ssh_dss_initPEM(LIBSSH2_SESSION *session, unsigned char *privkeyfile, unsigned char *passphrase, void **abstract)
+static int libssh2_hostkey_method_ssh_dss_initPEM(LIBSSH2_SESSION *session, unsigned const char *privkeyfile, unsigned const char *passphrase, void **abstract)
 {
 	DSA *dsactx;
 	FILE *fp;
@@ -345,7 +345,7 @@ static int libssh2_hostkey_method_ssh_dss_initPEM(LIBSSH2_SESSION *session, unsi
 		 */
 		OpenSSL_add_all_ciphers();
 	}
-	dsactx = PEM_read_DSAPrivateKey(fp, NULL, (void*)libssh2_hostkey_method_ssh_rsadsa_passphrase_cb, passphrase);
+	dsactx = PEM_read_DSAPrivateKey(fp, NULL, (void*)libssh2_hostkey_method_ssh_rsadsa_passphrase_cb, (void*)passphrase);
 	if (!dsactx) {
 		fclose(fp);
 		return -1;
@@ -523,7 +523,7 @@ LIBSSH2_HOSTKEY_METHOD **libssh2_hostkey_methods(void)
  * Length of buffer is determined by hash type
  * i.e. MD5 == 16, SHA1 == 20
  */
-LIBSSH2_API char *libssh2_hostkey_hash(LIBSSH2_SESSION *session, int hash_type)
+LIBSSH2_API const char *libssh2_hostkey_hash(LIBSSH2_SESSION *session, int hash_type)
 {
 	switch (hash_type) {
 #ifndef OPENSSL_NO_MD5

src/kex.c

@@ -1287,7 +1287,7 @@ int libssh2_kex_exchange(LIBSSH2_SESSION *session, int reexchange) /* session->f
 /* {{{ libssh2_session_method_pref
  * Set preferred method
  */
-LIBSSH2_API int libssh2_session_method_pref(LIBSSH2_SESSION *session, int method_type, char *prefs)
+LIBSSH2_API int libssh2_session_method_pref(LIBSSH2_SESSION *session, int method_type, const char *prefs)
 {
 	char **prefvar, *s, *newprefs;
 	int prefs_len = strlen(prefs);

src/packet.c

@@ -156,7 +156,7 @@ inline int libssh2_packet_queue_listener(LIBSSH2_SESSION *session, unsigned char
 
 			if (libssh2_packet_write(session, packet, 17)) {
 				libssh2_error(session, LIBSSH2_ERROR_SOCKET_SEND, "Unable to send channel open confirmation", 0);
-				return -1;				
+				return -1;
 			}
 
 			/* Link the channel into the end of the queue list */
@@ -269,7 +269,7 @@ inline int libssh2_packet_x11_open(LIBSSH2_SESSION *session, unsigned char *data
 
 		if (libssh2_packet_write(session, packet, 17)) {
 			libssh2_error(session, LIBSSH2_ERROR_SOCKET_SEND, "Unable to send channel open confirmation", 0);
-			return -1;				
+			return -1;
 		}
 
 		/* Link the channel into the session */
@@ -497,6 +497,26 @@ static int libssh2_packet_add(LIBSSH2_SESSION *session, unsigned char *data, siz
 				return 0;
 			}
 			break;
+	    case SSH_MSG_CHANNEL_REQUEST:
+		    {
+				if (libssh2_ntohu32(data+5) == sizeof("exit-status") - 1
+					&& !memcmp("exit-status", data + 9, sizeof("exit-status") - 1)) {
+
+					/* we've got "exit-status" packet. Set the session value */
+					LIBSSH2_CHANNEL *channel = libssh2_channel_locate(session, libssh2_ntohu32(data+1));
+
+					if (channel) {
+						channel->exit_status = libssh2_ntohu32(data + 9 + sizeof("exit-status"));
+#ifdef LIBSSH2_DEBUG_CONNECTION
+						_libssh2_debug(session, LIBSSH2_DBG_CONN, "Exit status %lu received for channel %lu/%lu", channel->exit_status, channel->local.id, channel->remote.id);
+#endif
+					}
+
+					LIBSSH2_FREE(session, data);
+					return 0;
+				}
+			}
+			break;
 		case SSH_MSG_CHANNEL_CLOSE:
 			{
 				LIBSSH2_CHANNEL *channel = libssh2_channel_locate(session, libssh2_ntohu32(data + 1));
@@ -900,7 +920,7 @@ int libssh2_packet_read(LIBSSH2_SESSION *session, int should_block)
 /* {{{ libssh2_packet_ask
  * Scan the brigade for a matching packet type, optionally poll the socket for a packet first
  */
-int libssh2_packet_ask_ex(LIBSSH2_SESSION *session, unsigned char packet_type, unsigned char **data, unsigned long *data_len, 
+int libssh2_packet_ask_ex(LIBSSH2_SESSION *session, unsigned char packet_type, unsigned char **data, unsigned long *data_len,
 													unsigned long match_ofs, const unsigned char *match_buf, unsigned long match_len, int poll_socket)
 {
 	LIBSSH2_PACKET *packet = session->packets.head;
@@ -945,7 +965,7 @@ int libssh2_packet_ask_ex(LIBSSH2_SESSION *session, unsigned char packet_type, u
 /* {{{ libssh2_packet_askv
  * Scan for any of a list of packet types in the brigade, optionally poll the socket for a packet first
  */
-int libssh2_packet_askv_ex(LIBSSH2_SESSION *session, unsigned char *packet_types, unsigned char **data, unsigned long *data_len, 
+int libssh2_packet_askv_ex(LIBSSH2_SESSION *session, unsigned char *packet_types, unsigned char **data, unsigned long *data_len,
 													 unsigned long match_ofs, const unsigned char *match_buf, unsigned long match_len, int poll_socket)
 {
 	int i, packet_types_len = strlen(packet_types);

src/scp.c

@@ -44,7 +44,7 @@
 /* {{{ libssh2_scp_recv
  * Open a channel and request a remote file via SCP
  */
-LIBSSH2_API LIBSSH2_CHANNEL *libssh2_scp_recv(LIBSSH2_SESSION *session, char *path, struct stat *sb)
+LIBSSH2_API LIBSSH2_CHANNEL *libssh2_scp_recv(LIBSSH2_SESSION *session, const char *path, struct stat *sb)
 {
 	int path_len = strlen(path);
 	unsigned char *command, response[LIBSSH2_SCP_RESPONSE_BUFLEN];
@@ -330,11 +330,12 @@ LIBSSH2_API LIBSSH2_CHANNEL *libssh2_scp_recv(LIBSSH2_SESSION *session, char *pa
 /* {{{ libssh2_scp_send_ex
  * Send a file using SCP
  */
-LIBSSH2_API LIBSSH2_CHANNEL *libssh2_scp_send_ex(LIBSSH2_SESSION *session, char *path, int mode, size_t size, long mtime, long atime)
+LIBSSH2_API LIBSSH2_CHANNEL *libssh2_scp_send_ex(LIBSSH2_SESSION *session, const char *path, int mode, size_t size, long mtime, long atime)
 {
 	int path_len = strlen(path);
-	unsigned char *command, *base, response[LIBSSH2_SCP_RESPONSE_BUFLEN];
+	unsigned char *command, response[LIBSSH2_SCP_RESPONSE_BUFLEN];
 	unsigned long response_len, command_len = path_len + sizeof("scp -t ");
+	unsigned const char *base;
 	LIBSSH2_CHANNEL *channel;
 
 	if (mtime || atime) {

src/session.c

@@ -172,7 +172,7 @@ static int libssh2_banner_send(LIBSSH2_SESSION *session)
 /* {{{ libssh2_banner_set
  * Set the local banner
  */
-LIBSSH2_API int libssh2_banner_set(LIBSSH2_SESSION *session, char *banner)
+LIBSSH2_API int libssh2_banner_set(LIBSSH2_SESSION *session, const char *banner)
 {
 	int banner_len = banner ? strlen(banner) : 0;
 
@@ -497,7 +497,7 @@ LIBSSH2_API void libssh2_session_free(LIBSSH2_SESSION *session)
 
 /* {{{ libssh2_session_disconnect_ex
  */
-LIBSSH2_API int libssh2_session_disconnect_ex(LIBSSH2_SESSION *session, int reason, char *description, char *lang)
+LIBSSH2_API int libssh2_session_disconnect_ex(LIBSSH2_SESSION *session, int reason, const char *description, const char *lang)
 {
 	unsigned char *s, *data;
 	unsigned long data_len, descr_len = 0, lang_len = 0;
@@ -547,7 +547,7 @@ LIBSSH2_API int libssh2_session_disconnect_ex(LIBSSH2_SESSION *session, int reas
  * NOTE: Currently lang_cs and lang_sc are ALWAYS set to empty string regardless of actual negotiation
  * Strings should NOT be freed
  */
-LIBSSH2_API char *libssh2_session_methods(LIBSSH2_SESSION *session, int method_type)
+LIBSSH2_API const char *libssh2_session_methods(LIBSSH2_SESSION *session, int method_type)
 {
 	/* All methods have char *name as their first element */
 	LIBSSH2_KEX_METHOD *method = NULL;
@@ -682,7 +682,7 @@ LIBSSH2_API int libssh2_session_flag(LIBSSH2_SESSION *session, int flag, int val
  * Returns 0 if no data is waiting on channel,
  * non-0 if data is available
  */
-static int libssh2_poll_channel_read(LIBSSH2_CHANNEL *channel, int extended)
+LIBSSH2_API int libssh2_poll_channel_read(LIBSSH2_CHANNEL *channel, int extended)
 {
 	LIBSSH2_SESSION *session = channel->session;
 	LIBSSH2_PACKET *packet = session->packets.head;
@@ -694,7 +694,7 @@ static int libssh2_poll_channel_read(LIBSSH2_CHANNEL *channel, int extended)
 			return 1;
 		}
 		packet = packet->next;
-	}	
+	}
 
 	return 0;
 }
@@ -832,7 +832,7 @@ LIBSSH2_API int libssh2_poll(LIBSSH2_POLLFD *fds, unsigned int nfds, long timeou
 							fds[i].revents |= LIBSSH2_POLLFD_CHANNEL_CLOSED | LIBSSH2_POLLFD_SESSION_CLOSED;
 						}
 						break;
-					case LIBSSH2_POLLFD_LISTENER: 
+					case LIBSSH2_POLLFD_LISTENER:
 						if ((fds[i].events & LIBSSH2_POLLFD_POLLIN) && /* Want a connection */
 							((fds[i].revents & LIBSSH2_POLLFD_POLLIN) == 0)) { /* No connections known of yet */
 							fds[i].revents |= libssh2_poll_listener_queued(fds[i].fd.listener) ? LIBSSH2_POLLFD_POLLIN : 0;

src/sftp.c

@@ -1139,9 +1139,12 @@ LIBSSH2_API int libssh2_sftp_rename_ex(LIBSSH2_SFTP *sftp,  char *source_filenam
 	memcpy(s, source_filename, source_filename_len);	s += source_filename_len;
 	libssh2_htonu32(s, dest_filename_len);				s += 4;
 	memcpy(s, dest_filename, dest_filename_len);		s += dest_filename_len;
-	libssh2_htonu32(s, flags);							s += 4;
 
-	if (packet_len != libssh2_channel_write(channel, packet, packet_len)) {
+	if (sftp->version >= 5) {
+		libssh2_htonu32(s, flags);						s += 4;
+	}
+
+	if (packet_len != libssh2_channel_write(channel, packet, s - packet)) {
 		libssh2_error(session, LIBSSH2_ERROR_SOCKET_SEND, "Unable to send FXP_REMOVE command", 0);
 		LIBSSH2_FREE(session, packet);
 		return -1;

src/userauth.c

@@ -49,7 +49,7 @@
  * Not a common configuration for any SSH server though
  * username should be NULL, or a null terminated string
  */
-LIBSSH2_API char *libssh2_userauth_list(LIBSSH2_SESSION *session, char *username, int username_len)
+LIBSSH2_API char *libssh2_userauth_list(LIBSSH2_SESSION *session, const char *username, int username_len)
 {
 	unsigned char reply_codes[3] = { SSH_MSG_USERAUTH_SUCCESS, SSH_MSG_USERAUTH_FAILURE, 0 };
 	unsigned long data_len = username_len + 31; /* packet_type(1) + username_len(4) + service_len(4) + service(14)"ssh-connection" +
@@ -116,8 +116,8 @@ LIBSSH2_API int libssh2_userauth_authenticated(LIBSSH2_SESSION *session)
 /* {{{ libssh2_userauth_password
  * Plain ol' login
  */
-LIBSSH2_API int libssh2_userauth_password_ex(LIBSSH2_SESSION *session, char *username, int username_len,
-																					  char *password, int password_len,
+LIBSSH2_API int libssh2_userauth_password_ex(LIBSSH2_SESSION *session, const char *username, int username_len,
+																					  const char *password, int password_len,
 																					  LIBSSH2_PASSWD_CHANGEREQ_FUNC((*passwd_change_cb)))
 {
 	unsigned char *data, *s, reply_codes[4] = { SSH_MSG_USERAUTH_SUCCESS, SSH_MSG_USERAUTH_FAILURE, SSH_MSG_USERAUTH_PASSWD_CHANGEREQ, 0 };
@@ -235,7 +235,7 @@ LIBSSH2_API int libssh2_userauth_password_ex(LIBSSH2_SESSION *session, char *use
  */
 static int libssh2_file_read_publickey(LIBSSH2_SESSION *session, unsigned char **method, unsigned long *method_len,
 																 unsigned char **pubkeydata, unsigned long *pubkeydata_len,
-																 char *pubkeyfile)
+																 const char *pubkeyfile)
 {
 	FILE *fd;
 	char *pubkey = NULL, c, *sp1, *sp2, *tmp;
@@ -310,12 +310,12 @@ static int libssh2_file_read_publickey(LIBSSH2_SESSION *session, unsigned char *
 }
 /* }}} */
 
-/* {{{ libssh2_file_read_publickey
+/* {{{ libssh2_file_read_privatekey
  * Read a PEM encoded private key from an id_??? style file
  */
 static int libssh2_file_read_privatekey(LIBSSH2_SESSION *session,	LIBSSH2_HOSTKEY_METHOD **hostkey_method, void **hostkey_abstract,
-																	char *method, int method_len,
-																	char *privkeyfile, char *passphrase)
+																	const char *method, int method_len,
+																	const char *privkeyfile, const char *passphrase)
 {
 	LIBSSH2_HOSTKEY_METHOD **hostkey_methods_avail = libssh2_hostkey_methods();
 
@@ -349,11 +349,11 @@ static int libssh2_file_read_privatekey(LIBSSH2_SESSION *session,	LIBSSH2_HOSTKE
 /* {{{ libssh2_userauth_hostbased_fromfile_ex
  * Authenticate using a keypair found in the named files
  */
-LIBSSH2_API int libssh2_userauth_hostbased_fromfile_ex(LIBSSH2_SESSION *session, char *username, int username_len,
-                                                                                 char *publickey, char *privatekey,
-                                                                                 char *passphrase,
-																				 char *hostname, int hostname_len,
-																				 char *local_username, int local_username_len)
+LIBSSH2_API int libssh2_userauth_hostbased_fromfile_ex(LIBSSH2_SESSION *session, const char *username, int username_len,
+                                                                                 const char *publickey, const char *privatekey,
+                                                                                 const char *passphrase,
+																				 const char *hostname, int hostname_len,
+																				 const char *local_username, int local_username_len)
 {
 	LIBSSH2_HOSTKEY_METHOD *privkeyobj;
 	void *abstract;
@@ -480,9 +480,9 @@ LIBSSH2_API int libssh2_userauth_hostbased_fromfile_ex(LIBSSH2_SESSION *session,
 /* {{{ libssh2_userauth_publickey_fromfile_ex
  * Authenticate using a keypair found in the named files
  */
-LIBSSH2_API int libssh2_userauth_publickey_fromfile_ex(LIBSSH2_SESSION *session, char *username, int username_len,
-                                                                                 char *publickey, char *privatekey,
-                                                                                 char *passphrase)
+LIBSSH2_API int libssh2_userauth_publickey_fromfile_ex(LIBSSH2_SESSION *session, const char *username, int username_len,
+                                                                                 const char *publickey, const char *privatekey,
+                                                                                 const char *passphrase)
 {
 	LIBSSH2_HOSTKEY_METHOD *privkeyobj;
 	void *abstract;
@@ -652,3 +652,204 @@ LIBSSH2_API int libssh2_userauth_publickey_fromfile_ex(LIBSSH2_SESSION *session,
 	return -1;
 }
 /* }}} */
+
+/* {{{ libssh2_userauth_keyboard_interactive
+ * Authenticate using a challenge-response authentication
+ */
+LIBSSH2_API int libssh2_userauth_keyboard_interactive_ex(LIBSSH2_SESSION *session, const char *username, int username_len,
+														 LIBSSH2_USERAUTH_KBDINT_RESPONSE_FUNC((*response_callback)))
+{
+	unsigned char *s, *data; /* packet */
+	unsigned long packet_len;
+
+	packet_len = 1         /* byte      SSH_MSG_USERAUTH_REQUEST */
+		+ 4 + username_len /* string    user name (ISO-10646 UTF-8, as defined in [RFC-3629]) */
+		+ 4 + 14           /* string    service name (US-ASCII) */
+		+ 4 + 20           /* string    "keyboard-interactive" (US-ASCII) */
+		+ 4 + 0            /* string    language tag (as defined in [RFC-3066]) */
+		+ 4 + 0            /* string    submethods (ISO-10646 UTF-8) */
+		;
+
+	if (!(data = s = LIBSSH2_ALLOC(session, packet_len))) {
+		libssh2_error(session, LIBSSH2_ERROR_ALLOC, "Unable to allocate memory for keyboard-interactive authentication", 0);
+		return -1;
+	}
+
+	*s++ = SSH_MSG_USERAUTH_REQUEST;
+
+	/* user name */
+	libssh2_htonu32(s, username_len);										s += 4;
+	memcpy(s, username, username_len);										s += username_len;
+
+	/* service name */
+	libssh2_htonu32(s, sizeof("ssh-connection") - 1);						s += 4;
+	memcpy(s, "ssh-connection", sizeof("ssh-connection") - 1);				s += sizeof("ssh-connection") - 1;
+
+	/* "keyboard-interactive" */
+	libssh2_htonu32(s, sizeof("keyboard-interactive") - 1);					s += 4;
+	memcpy(s, "keyboard-interactive", sizeof("keyboard-interactive") - 1);	s += sizeof("keyboard-interactive") - 1;
+
+	/* language tag */
+	libssh2_htonu32(s, 0);													s += 4;
+
+	/* submethods */
+	libssh2_htonu32(s, 0);													s += 4;
+
+#ifdef LIBSSH2_DEBUG_USERAUTH
+	_libssh2_debug(session, LIBSSH2_DBG_AUTH, "Attempting keyboard-interactive authentication");
+#endif
+	if (libssh2_packet_write(session, data, packet_len)) {
+		libssh2_error(session, LIBSSH2_ERROR_SOCKET_SEND, "Unable to send keyboard-interactive request", 0);
+		LIBSSH2_FREE(session, data);
+		return -1;
+	}
+	LIBSSH2_FREE(session, data);
+
+	for (;;) {
+		unsigned char reply_codes[4] = { SSH_MSG_USERAUTH_SUCCESS, SSH_MSG_USERAUTH_FAILURE, SSH_MSG_USERAUTH_INFO_REQUEST, 0 };
+		unsigned int auth_name_len;
+		char* auth_name = NULL;
+		unsigned auth_instruction_len;
+		char* auth_instruction = NULL;
+		unsigned int language_tag_len;
+		unsigned long data_len;
+		unsigned int num_prompts = 0;
+		unsigned int i;
+		int auth_failure = 1;
+		LIBSSH2_USERAUTH_KBDINT_PROMPT* prompts = NULL;
+		LIBSSH2_USERAUTH_KBDINT_RESPONSE* responses = NULL;
+
+		if (libssh2_packet_requirev(session, reply_codes, &data, &data_len)) {
+			return -1;
+		}
+
+		if (data[0] == SSH_MSG_USERAUTH_SUCCESS) {
+#ifdef LIBSSH2_DEBUG_USERAUTH
+			_libssh2_debug(session, LIBSSH2_DBG_AUTH, "Keyboard-interactive authentication successful");
+#endif
+			LIBSSH2_FREE(session, data);
+			session->state |= LIBSSH2_STATE_AUTHENTICATED;
+			return 0;
+		}
+
+		if (data[0] == SSH_MSG_USERAUTH_FAILURE) {
+			LIBSSH2_FREE(session, data);
+			return -1;
+		}
+
+		/* server requested PAM-like conversation */
+
+		s = data + 1;
+
+		/* string    name (ISO-10646 UTF-8) */
+		auth_name_len = libssh2_ntohu32(s);								s += 4;
+		if (!(auth_name = LIBSSH2_ALLOC(session, auth_name_len))) {
+			libssh2_error(session, LIBSSH2_ERROR_ALLOC, "Unable to allocate memory for keyboard-interactive 'name' request field", 0);
+			goto cleanup;
+		}
+		memcpy(auth_name, s, auth_name_len);							s += auth_name_len;
+
+		/* string    instruction (ISO-10646 UTF-8) */
+		auth_instruction_len = libssh2_ntohu32(s); s += 4;
+		if (!(auth_instruction = LIBSSH2_ALLOC(session, auth_instruction_len))) {
+			libssh2_error(session, LIBSSH2_ERROR_ALLOC, "Unable to allocate memory for keyboard-interactive 'instruction' request field", 0);
+			goto cleanup;
+		}
+		memcpy(auth_instruction, s, auth_instruction_len);				s += auth_instruction_len;
+
+		/* string    language tag (as defined in [RFC-3066]) */
+		language_tag_len = libssh2_ntohu32(s);							s += 4;
+		/* ignoring this field as deprecated */							s += language_tag_len;
+
+		/* int       num-prompts */
+		num_prompts = libssh2_ntohu32(s);								s += 4;
+
+		prompts = LIBSSH2_ALLOC(session, sizeof(LIBSSH2_USERAUTH_KBDINT_PROMPT) * num_prompts);
+		if (!prompts) {
+			libssh2_error(session, LIBSSH2_ERROR_ALLOC, "Unable to allocate memory for keyboard-interactive prompts array", 0);
+			goto cleanup;
+		}
+		memset(prompts, 0, sizeof(LIBSSH2_USERAUTH_KBDINT_PROMPT) * num_prompts);
+
+		responses = LIBSSH2_ALLOC(session, sizeof(LIBSSH2_USERAUTH_KBDINT_RESPONSE) * num_prompts);
+		if (!responses) {
+			libssh2_error(session, LIBSSH2_ERROR_ALLOC, "Unable to allocate memory for keyboard-interactive responses array", 0);
+			goto cleanup;
+		}
+		memset(responses, 0, sizeof(LIBSSH2_USERAUTH_KBDINT_RESPONSE) * num_prompts);
+
+		for(i = 0; i != num_prompts; ++i) {
+			/* string    prompt[1] (ISO-10646 UTF-8) */
+			prompts[i].length = libssh2_ntohu32(s);						s += 4;
+			if (!(prompts[i].text = LIBSSH2_ALLOC(session, prompts[i].length))) {
+				libssh2_error(session, LIBSSH2_ERROR_ALLOC, "Unable to allocate memory for keyboard-interactive prompt message", 0);
+				goto cleanup;
+			}
+			memcpy(prompts[i].text, s, prompts[i].length);				s += prompts[i].length;
+
+			/* boolean   echo[1] */
+			prompts[i].echo = *s++;
+		}
+
+		response_callback(auth_name, auth_name_len,  auth_instruction, auth_instruction_len, num_prompts, prompts, responses, &session->abstract);
+
+#ifdef LIBSSH2_DEBUG_USERAUTH
+		_libssh2_debug(session, LIBSSH2_DBG_AUTH, "Keyboard-interactive response callback function invoked");
+#endif
+
+		packet_len = 1 /* byte      SSH_MSG_USERAUTH_INFO_RESPONSE */
+			+ 4        /* int       num-responses */
+			;
+
+		for (i = 0; i != num_prompts; ++i) {
+			packet_len += 4 + responses[i].length; /* string    response[1] (ISO-10646 UTF-8) */
+		}
+
+		if (!(data = s = LIBSSH2_ALLOC(session, packet_len))) {
+			libssh2_error(session, LIBSSH2_ERROR_ALLOC, "Unable to allocate memory for keyboard-interactive response packet", 0);
+			goto cleanup;
+		}
+
+		*s = SSH_MSG_USERAUTH_INFO_RESPONSE; s++;
+		libssh2_htonu32(s, num_prompts);								s += 4;
+
+		for (i = 0; i != num_prompts; ++i) {
+			libssh2_htonu32(s, responses[i].length);					s += 4;
+			memcpy(s, responses[i].text, responses[i].length);			s += responses[i].length;
+		}
+
+		if (libssh2_packet_write(session, data, packet_len)) {
+			libssh2_error(session, LIBSSH2_ERROR_SOCKET_SEND, "Unable to send userauth-keyboard-interactive request", 0);
+			goto cleanup;
+		}
+
+		auth_failure = 0;
+
+	cleanup:
+		/* It's safe to clean all the data here, because unallocated pointers
+		 * are filled by zeroes
+		 */
+
+		LIBSSH2_FREE(session, data);
+
+		if (prompts) {
+			for (i = 0; i != num_prompts; ++i) {
+				LIBSSH2_FREE(session, prompts[i].text);
+			}
+		}
+
+		if (responses) {
+			for (i = 0; i != num_prompts; ++i) {
+				LIBSSH2_FREE(session, responses[i].text);
+			}
+		}
+
+		LIBSSH2_FREE(session, prompts);
+		LIBSSH2_FREE(session, responses);
+
+		if (auth_failure) {
+			return -1;
+		}
+	}
+}
+/* }}} */

ssh2_sample.c

@@ -17,7 +17,7 @@
 int main(int argc, char *argv[]) {
 	int sock, i, auth_pw = 1;
 	struct sockaddr_in sin;
-	char *fingerprint;
+	const char *fingerprint;
 	LIBSSH2_SESSION *session;
 	LIBSSH2_CHANNEL *channel;
 #ifdef WIN32