1/* $OpenBSD: lib_initscr.c,v 1.4 2023/10/17 09:52:08 nicm Exp $ */ 2 3/**************************************************************************** 4 * Copyright 2019,2020 Thomas E. Dickey * 5 * Copyright 1998-2016,2017 Free Software Foundation, Inc. * 6 * * 7 * Permission is hereby granted, free of charge, to any person obtaining a * 8 * copy of this software and associated documentation files (the * 9 * "Software"), to deal in the Software without restriction, including * 10 * without limitation the rights to use, copy, modify, merge, publish, * 11 * distribute, distribute with modifications, sublicense, and/or sell * 12 * copies of the Software, and to permit persons to whom the Software is * 13 * furnished to do so, subject to the following conditions: * 14 * * 15 * The above copyright notice and this permission notice shall be included * 16 * in all copies or substantial portions of the Software. * 17 * * 18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * 19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * 20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * 21 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * 22 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * 23 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * 24 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * 25 * * 26 * Except as contained in this notice, the name(s) of the above copyright * 27 * holders shall not be used in advertising or otherwise to promote the * 28 * sale, use or other dealings in this Software without prior written * 29 * authorization. * 30 ****************************************************************************/ 31 32/**************************************************************************** 33 * Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 * 34 * and: Eric S. Raymond <esr@snark.thyrsus.com> * 35 * and: Thomas E. Dickey 1996-on * 36 ****************************************************************************/ 37 38/* 39** lib_initscr.c 40** 41** The routines initscr(), and termname(). 42** 43*/ 44 45#include <curses.priv.h> 46 47#if HAVE_SYS_TERMIO_H 48#include <sys/termio.h> /* needed for ISC */ 49#endif 50 51MODULE_ID("$Id: lib_initscr.c,v 1.4 2023/10/17 09:52:08 nicm Exp $") 52 53NCURSES_EXPORT(WINDOW *) 54initscr(void) 55{ 56 WINDOW *result; 57 58 START_TRACE(); 59 T((T_CALLED("initscr()"))); 60 61 _nc_init_pthreads(); 62 _nc_lock_global(curses); 63 64 /* Portable applications must not call initscr() more than once */ 65 if (!_nc_globals.init_screen) { 66 const char *env; 67 char *name; 68 69 _nc_globals.init_screen = TRUE; 70 71 env = getenv("TERM"); 72 (void) VALID_TERM_ENV(env, "unknown"); 73 74 if ((name = strdup(env)) == NULL) { 75 fprintf(stderr, "Error opening allocating $TERM.\n"); 76 ExitProgram(EXIT_FAILURE); 77 } 78#ifdef __CYGWIN__ 79 /* 80 * 2002/9/21 81 * Work around a bug in Cygwin. Full-screen subprocesses run from 82 * bash, in turn spawned from another full-screen process, will dump 83 * core when attempting to write to stdout. Opening /dev/tty 84 * explicitly seems to fix the problem. 85 */ 86 if (NC_ISATTY(fileno(stdout))) { 87 FILE *fp = fopen("/dev/tty", "w"); 88 if (fp != 0 && NC_ISATTY(fileno(fp))) { 89 fclose(stdout); 90 dup2(fileno(fp), STDOUT_FILENO); 91 stdout = fdopen(STDOUT_FILENO, "w"); 92 } 93 } 94#endif 95 if (newterm(name, stdout, stdin) == 0) { 96 fprintf(stderr, "Error opening terminal: %s.\n", name); 97 ExitProgram(EXIT_FAILURE); 98 } 99 100 /* def_shell_mode - done in newterm/_nc_setupscreen */ 101#if NCURSES_SP_FUNCS 102 NCURSES_SP_NAME(def_prog_mode) (CURRENT_SCREEN); 103#else 104 def_prog_mode(); 105#endif 106 free(name); 107 } 108 result = stdscr; 109 _nc_unlock_global(curses); 110 111 returnWin(result); 112} 113