/*
 * Copyright (C) 2002 Uwe Ohse, uwe@ohse.de
 * This is free software, licensed under the terms of the GNU General 
 * Public License Version 2, of which a copy is stored at:
 *    http://www.ohse.de/uwe/licenses/GPL-2
 * Later versions may or may not apply, see 
 *    http://www.ohse.de/uwe/licenses/
 * for information after a newer version has been published.
 */
#include "buffer.h"
#include "stralloc.h"
#include "attributes.h"

#define COMMON_RELATED_INFO                                          \
  "\n"                                                               \
    "The ftpcopy package has a mailing list. Send an empty mail to\n"   \
    "<ftpcopy-subscribe@lists.ohse.de> to subscribe to it.\n\n" \
    "The ftpcopy homepage is at\n" \
    "  http://www.ohse.de/uwe/ftpcopy.html"
#define COMMON_BUGREPORT_INFO                                        \
 "Please report bugs to <ftpcopy@lists.ohse.de>"

#define COMMON_OPT_user \
 {'u', "user", uogo_string,0, &o_user,0, \
 "Use NAME to login on the ftp server.", \
 "The default is `anonymous'. Use an empty name to force the program to not " \
 "log in.","NAME"}
#define COMMON_OPT_account \
{  0, "account", uogo_string,0, &o_acct,0, \
 "Send ACCOUNT as account name during login phase.", \
 "Note: this is _not_ the user name, but the name of what could be called " \
 "a subaccount implemented by a few servers. If you don't understand what " \
 "it means you have a good chance to never need this option anyway. If you " \
 "think you need it please try the --user option first.","ACCOUNT"}
#define COMMON_OPT_pass \
 {'p', "pass", uogo_string,0, &o_pass,0, \
 "Use PASS as password to login on the ftp server.", \
 "The default is `anonymous@invalid.example'. If an empty password is " \
 "given the programm will not send a password to the server.","PASSWORD"}
#define COMMON_OPT_tries \
 {'\0', "tries", uogo_ulong,0, &o_tries,0, \
 "Number of tries to connect and log in.", \
 "The default is 1, meaning that the program " \
 "will give up after the first error.\n" \
 "This option was added in version 0.3.0.",0}
#define COMMON_OPT_data_connect_retries \
 {'\0', "data-connect-retries", uogo_ulong,0, &o_data_connect_retries,0, \
 "Number of tries to connect to data port.", \
 "The program will try to reach the data port (for retrieval of listings or " \
 "data) that many times and will give up after that many errors in a row. " \
 "The default is 5, meaning that the program " \
 "will give up after the fifth error.\n" \
 "This option was added in version 0.6.6. The old behaviour was to give " \
 "up after the first error.",0}
#define COMMON_OPT_sleep \
{'\0', "login-sleep", uogo_ulong,0, &o_login_sleep,0, \
 "Seconds to sleep after a failed login.", \
 "More precisely: the program will fall to sleep for this many seconds " \
 "after a " \
 "try to connect or login has failed. The default is 5. A 0 is treated as 1, " \
 "and abuse, especially together with --tries, is likely to annory the " \
 "servers adminstrators.\n" \
 "This option was added in version 0.4.5.",0}
#define COMMON_OPT_v4 \
 {'4', "v4", uogo_flag,UOGO_NOARG, &o_v4_only,1, \
 "Only use IPv4, even if v6 is available.", \
 "This option effectively disallows the use of IPv6, " \
 "except for DNS queries.\n" \
 "It was added in version 0.6.0.",0}
#define COMMON_OPT_v6 \
 {'6', "v6", uogo_flag,UOGO_NOARG, &o_v6_only,1, \
 "Only use IPv6, even if v4 is available.", \
 "This option effectively disallows the use of IPv4, " \
 "except for DNS queries.\n" \
 "It was added in version 0.6.0.",0}
#define COMMON_OPT_timeout \
 {'T', "timeout", uogo_ulong,0, &o_timeout,0, \
 "Timeout to use for network read/write.", \
 "The default is 30 seconds and is usually sufficient.\n" \
 "This option was added in version 0.3.8.","SECONDS"}
#define COMMON_OPT_ascii_listings \
{ 0, "ascii-listings", uogo_flag,UOGO_NOARG, &o_ascii_listings,1, \
"Do directory listings in ASCII mode.", \
"Use this option if the FTP server is unable to correctly list directories " \
"in binary mode, for example, if you see a message like this (usually on " \
"one line):\n" \
"`fatal: received unwanted answer to LIST: 426 Data connection: Illegal seek.'\n" \
"This option was added in version 0.5.2.",0}
#define COMMON_OPT_list_options \
 {'L', "list-options", uogo_string,0, &o_list_options,1, \
 "Add OPTS to LIST command.", \
 "This allows to pass arbitrary options to the " \
 "FTP servers LIST command. Note that ftpcopy does " \
 "not cope well with recursive directory listings.\n" \
 "This option was added in version 0.3.0.","OPTS"}
#define COMMON_OPT_eat_leading_spaces \
 {'\0', "eat-leading-spaces", uogo_flag,1, &o_eat_leading_spaces,1, \
 "Delete leading spaces from file names.", \
 "This works around some cases which cannot be automatically solved.\n" \
 "No leading spaces will be deleted on EPLF and MLSx listings.\n" \
 "This option was added in version 0.6.6.",0}
#define COMMON_OPT_pasv_ip \
 { 0, "allow-pasv-ip", callback_ip,0, callback_ip,0, \
 "Allow data connections to the address IP4.", \
 "Normally ftpls only accepts data connections to the IP addresses it " \
 "received as an answer to the DNS request, or the IP address in the URL. " \
 "Sometimes this is not enough, especially when NAT or masquerading are " \
 "active. ftpcopy then prints an error message `illegal redirect by FTP " \
 "server'. With this option, which may be given more than once, you can " \
 "add additional addresses to the internal list of allowed data " \
 "connection targets. IP4 has to be an IPv4 address or a list of IPv4 " \
 "addresses, separated by commas.\n" \
 "The environment variable FTPCOPY_ALLOW_PASV_IP serves the same purpose.\n" \
 "Note: Do not use " \
 "this option without thinking: FTP redirects may be used to launch " \
 "denial of service attacks against innocent targets.\n" \
 "This option was added in version 0.6.1." \
 ,"IP4"}
#define COMMON_OPT_force_select \
 {0, "force-select", uogo_flag,UOGO_NOARG, &iopause_force_select,1, \
 "Use select, not poll.", \
 "Do not use the poll() system call even if it's available, but use select() " \
 "instead. This allows the program to be used together with runsocks " \
 "from the socks5 reference implementation.\n" \
 "Please note that you will need a directly reachable name server anyway, as " \
 "the DNS library in use does not support SOCKS (you can always use IP " \
 "addresses).\n" \
 "This option was added in version 0.3.8.",0}



extern buffer io_i;
extern buffer io_o;
extern unsigned long o_loglevel;
extern unsigned long o_data_connect_retries;
extern int o_force_select;
extern int o_eat_leading_spaces;

extern unsigned long o_timeout;
extern unsigned long o_login_sleep;
extern stralloc remoteip; /* list of IP addresses of the host */
extern stralloc pasv_response_ips; /* list of IP addresses allowed in PASV response */

int do_pasv(void);
int connect_auth (const char *host, const char *o_user, 
	const char *o_pass, const char *o_acct, int tries);
char *ccread(void);
char *ccread_oneline(void);
void cmdwrite2(const char *s1, const unsigned char *s2);
void cmdwrite1(const char *s);
void x2(const char *where);
void sx2(const char *what);
void do_log1(const char *s1);
void do_log2(const char *s1, const char *s2);
void do_log3(const char *s1, const char *s2, const char *s3);
void do_log4(const char *s1, const char *s2, const char *s3, const char *s4);
void do_logmem(const char *s1,unsigned int l);
void warn_broken_mlsx(void);
stralloc *canon(stralloc *l_dir);  /* feed me with 0 terminated strings only */


void eof_or_error(int ec, int e, const char *s1,const char *s2, const char *s3)
 attribute_noreturn;
void sockrecbuf(int, unsigned long);
extern unsigned int window_x;
extern unsigned int window_y;
int inquire_window_size(void);
int setup_window_size(void);