/* * util.h: misc functions common to all desproxy binaries * * Copyright (C) 2003 Miguelanxo Otero Salgueiro * * This program is free software; you can redistribute it and/or modify * it under the tems of the GNU General Public License version 2 as * published by the Free Software Foundation. * *//* * Function : base64_encode (const char *string, char *p) * Purpose  : create a base 64 encoded string * Params   : p - string to encode *          : s - string buffer to write into * * Note     : Taken from transconnect (http://transconnect.sourceforge.net/) *///static void encode_base64 (const char *s, char *p);/* * Function : debug_printf(char *fmt, ...) * Purpose  : prints arguments like printf, but adds fflush(stdout) * Params   : same as printf, as defined in <stdio.h> *         * Note     : this function obtained via IRC chat in  *          : irc.openprojects.net, #c channel. */int debug_printf (const char *fmt, ...);/* *  Function : char *get_console_line(void) *  Purpose  : gets a line from console to char console_line[256] *           : (returns a pointer to global variable console_line) *  Params   : none */char *get_console_line (void);/* * Function : void strtolower(char *string) * Purpose  : changes char *string to lowercase * Params   : char *string - string to lowercase */void strtolower (char *string);/* * Function: void EOC (int connection) * Purpose : terminates connection gracefully * Params  : int connection - connection number to terminate */voidEOC (int connection);/* * Function : void mark_all_client_sockets_as_free(void) * Purpose  : initializes client sockets, marking all of them as free * Params   : none */void mark_all_client_sockets_as_free (void);/* * Function : void strnsend(int fd, char *string, int len) * Purpose  : almost same as write() + debugging * Params   : fd - file descriptor *          : char *string - data to write *          : int len - length of data */void strnsend (int fd, char *string, int len);/* * Function : void strsend(int fd, char *string) * Purpose  : send null terminated string to file descriptor * Params   : int fd - file descriptor *          : char *string - data to send */void strsend (int fd, char *string);/* * Function : void print_program_version(char *PROGRAM_NAME, *          : char *PROGRAM_VERSION); * Purpose  : outputs program name & version "window" * Params   : char *PROGRAM_NAME - program name *          : char *PROGRAM_VERSION - program version */void print_program_version (char *PROGRAM_NAME, char *PROGRAM_VERSION);/* * Function : char *parse_HTTP_return_code(void) * Purpose  : gets a parsed HTTP return code from line in buffer *          : (returns a pointer to global variable HTTP_return_code) * Params   : none */char *parse_HTTP_return_code (void);/* * Function : void wait_for_crlf(int fd) * Purpose  : reads data from file descriptor until sequence CR LF found *          : (data is stored in global variable buffer) * Params   : int fd - file descriptor * Returns  : 0 if Ok, -1 otherwise */int wait_for_crlf (int fd);/* * Function : void wait_for_2crlf(int fd) * Purpose  : reads file descriptor until sequence CR LR CR LF found *          : (that sequence is used to mark HTTP header end) * Params   : int fd - file descriptor to read from * Returns  : 0 if Ok, -1 otherwise */int wait_for_2crlf (int fd);/* * Function : int connect_host_to_proxy(int connection, char *remote_host *          : char *remote_port) * Purpose  : connects to remote_host:remote_port *          : trough proxy_host:proxy_port  * Params   : int connection - number of connection in use *          : char *remote_host - remote host (name or IP as string) *          : char *remote_port - remote port (number as string) */int connect_host_to_proxy (int connection, char *remote_host,			   char *remote_port);/* * Function : void initialize_gettext(void) * Purpose  : initializes gettext (i18n) extension * Params   : none */void initialize_gettext (void);/* * Function : int listen_in_TCP_port(unsigned int request_port) * Purpose  : listens in requested TCP port for incoming connections * Params   : unsigned int request_port - requested port */int listen_in_TCP_port (unsigned int request_port);/* * Function : int bind_UDP_port(unsigned int request_port) * Purpose  : binds requested UDP port * Params   : unsigned int request_port - requested port */int bind_UDP_port (unsigned int request_port);/* * Function : void print_connection(int connection, char *string) * Purpose  : outputs info string for a connection * Params   : int connection - numbre of connection *          : char *string - text to output */void print_connection (int connection, char *string);/* * Function : int look_for_desproxy_conf(void) * NYI */int look_for_desproxy_conf (void);/* * Function : void get_username_and_password(void) * Purpose  : requests user to give username and password *          : strores them in global variables username & password * Params   : none */void get_username_and_password (void);