#ifndef BAREV_FT_H
#define BAREV_FT_H

/* File transfer foundations (C89), compatible direction/state model. */

enum barev_ft_direction {
  BAREV_FT_SEND = 0,
  BAREV_FT_RECV = 1
};

enum barev_ft_state {
  BAREV_FTS_IDLE = 0,
  BAREV_FTS_OFFER_SENT,
  BAREV_FTS_OFFER_RECV,
  BAREV_FTS_ACCEPTED,
  BAREV_FTS_STREAMHOST_SENT,
  BAREV_FTS_STREAMHOST_RECV,
  BAREV_FTS_TRANSFERRING,
  BAREV_FTS_DONE,
  BAREV_FTS_ERROR
};

int barev_ft_socks5_server_handshake(int sockfd);
int barev_ft_socks5_client_handshake(int sockfd, const char *dstaddr40);
int barev_ft_build_si_offer(const char *from_jid, const char *to_jid, const char *id,
                            const char *sid, const char *file_name, long file_size,
                            char *out, unsigned long out_n);
int barev_ft_build_si_accept(const char *from_jid, const char *to_jid, const char *id,
                             char *out, unsigned long out_n);
int barev_ft_build_si_reject(const char *from_jid, const char *to_jid, const char *id,
                             const char *code, char *out, unsigned long out_n);
int barev_ft_build_bytestreams_query(const char *from_jid, const char *to_jid, const char *id,
                                     const char *sid, const char *host, unsigned short port,
                                     char *out, unsigned long out_n);
int barev_ft_build_bytestreams_used(const char *from_jid, const char *to_jid, const char *id,
                                    const char *sid, const char *host_jid,
                                    char *out, unsigned long out_n);
int barev_ft_is_si_offer(const char *xml);
int barev_ft_is_bytestreams_query(const char *xml);

int barev_ft_extract_attr(const char *xml, const char *attr, char *out, unsigned long out_n);
int barev_ft_parse_si_offer(const char *xml,
                            char *sid, unsigned long sid_n,
                            char *name, unsigned long name_n,
                            long *size_out);
int barev_ft_parse_streamhost(const char *xml,
                              char *sid, unsigned long sid_n,
                              char *host, unsigned long host_n,
                              unsigned short *port_out,
                              char *jid, unsigned long jid_n);
int barev_ft_compute_dstaddr40(const char *sid, const char *initiator_jid, const char *target_jid,
                               char out40[41]);
int barev_ft_recv_file_blocking(int sockfd, const char *save_path, long expected_size, long *bytes_done);
int barev_ft_listen_range(unsigned short min_port, unsigned short max_port, unsigned short *bound_port);
int barev_ft_send_file_blocking(int sockfd, const char *path, long *bytes_done);

#endif