char * ssh_scp_init(char *host, int port, char *cmd, char **realhost);
int ssh_scp_recv(unsigned char *buf, int len);
void ssh_scp_send(unsigned char *buf, int len);
char * ssh_scp_init(char *host, int port, char *cmd, char **realhost);
int ssh_scp_recv(unsigned char *buf, int len);
void ssh_scp_send(unsigned char *buf, int len);