1 /* Declarations for connect. 2 Copyright (C) 1996-2011, 2015, 2018-2021 Free Software Foundation, 3 Inc. 4 5 This file is part of GNU Wget. 6 7 GNU Wget is free software; you can redistribute it and/or modify 8 it under the terms of the GNU General Public License as published by 9 the Free Software Foundation; either version 3 of the License, or 10 (at your option) any later version. 11 12 GNU Wget is distributed in the hope that it will be useful, 13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 GNU General Public License for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with Wget. If not, see <http://www.gnu.org/licenses/>. 19 20 Additional permission under GNU GPL version 3 section 7 21 22 If you modify this program, or any covered work, by linking or 23 combining it with the OpenSSL project's OpenSSL library (or a 24 modified version of that library), containing parts covered by the 25 terms of the OpenSSL or SSLeay licenses, the Free Software Foundation 26 grants you additional permission to convey the resulting work. 27 Corresponding Source for a non-source form of such a combination 28 shall include the source code for the parts of OpenSSL used as well 29 as that of the covered work. */ 30 31 #ifndef CONNECT_H 32 #define CONNECT_H 33 34 #include "host.h" /* for definition of ip_address */ 35 36 /* Function declarations */ 37 38 /* Returned by connect_to_host when host name cannot be resolved. */ 39 enum { 40 E_HOST = -100 41 }; 42 int connect_to_host (const char *, int); 43 int connect_to_ip (const ip_address *, int, const char *); 44 45 int bind_local (const ip_address *, int *); 46 int accept_connection (int); 47 48 enum { 49 ENDPOINT_LOCAL, 50 ENDPOINT_PEER 51 }; 52 bool socket_ip_address (int, ip_address *, int); 53 int socket_family (int sock, int endpoint); 54 55 bool retryable_socket_connect_error (int); 56 57 /* Flags for select_fd's WAIT_FOR argument. */ 58 enum { 59 WAIT_FOR_READ = 1, 60 WAIT_FOR_WRITE = 2 61 }; 62 int select_fd (int, double, int); 63 bool test_socket_open (int); 64 65 struct transport_implementation { 66 int (*reader) (int, char *, int, void *, double); 67 int (*writer) (int, char *, int, void *); 68 int (*poller) (int, double, int, void *); 69 int (*peeker) (int, char *, int, void *, double); 70 const char *(*errstr) (int, void *); 71 void (*closer) (int, void *); 72 }; 73 74 void fd_register_transport (int, struct transport_implementation *, void *); 75 void *fd_transport_context (int); 76 int fd_read (int, char *, int, double); 77 int fd_write (int, char *, int, double); 78 int fd_peek (int, char *, int, double); 79 const char *fd_errstr (int); 80 void fd_close (int); 81 void connect_cleanup (void); 82 83 #ifdef WINDOWS 84 int select_fd_nb (int, double, int); 85 #else 86 #define select_fd_nb select_fd 87 #endif 88 89 #endif /* CONNECT_H */ 90