1 /* 2 * Copyright (c) 1983, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Edward Wang at The University of California, Berkeley. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * @(#)wwopen.c 8.1 (Berkeley) 6/6/93 37 * $FreeBSD: src/usr.bin/window/wwopen.c,v 1.2.12.1 2001/05/17 09:45:01 obrien Exp $ 38 * $DragonFly: src/usr.bin/window/wwopen.c,v 1.2 2003/06/17 04:29:34 dillon Exp $ 39 */ 40 41 #include "ww.h" 42 #include <sys/types.h> 43 #include <sys/socket.h> 44 #include <fcntl.h> 45 #include <stdlib.h> 46 47 struct ww * 48 wwopen(flags, nrow, ncol, row, col, nline) 49 { 50 register struct ww *w; 51 register i, j; 52 char m; 53 short nvis; 54 55 w = (struct ww *)calloc(sizeof (struct ww), 1); 56 if (w == 0) { 57 wwerrno = WWE_NOMEM; 58 goto bad; 59 } 60 w->ww_pty = -1; 61 w->ww_socket = -1; 62 63 for (i = 0; i < NWW && wwindex[i] != 0; i++) 64 ; 65 if (i >= NWW) { 66 wwerrno = WWE_TOOMANY; 67 goto bad; 68 } 69 w->ww_index = i; 70 71 if (nline < nrow) 72 nline = nrow; 73 74 w->ww_w.t = row; 75 w->ww_w.b = row + nrow; 76 w->ww_w.l = col; 77 w->ww_w.r = col + ncol; 78 w->ww_w.nr = nrow; 79 w->ww_w.nc = ncol; 80 81 w->ww_b.t = row; 82 w->ww_b.b = row + nline; 83 w->ww_b.l = col; 84 w->ww_b.r = col + ncol; 85 w->ww_b.nr = nline; 86 w->ww_b.nc = ncol; 87 88 w->ww_i.t = MAX(w->ww_w.t, 0); 89 w->ww_i.b = MIN(w->ww_w.b, wwnrow); 90 w->ww_i.l = MAX(w->ww_w.l, 0); 91 w->ww_i.r = MIN(w->ww_w.r, wwncol); 92 w->ww_i.nr = w->ww_i.b - w->ww_i.t; 93 w->ww_i.nc = w->ww_i.r - w->ww_i.l; 94 95 w->ww_cur.r = w->ww_w.t; 96 w->ww_cur.c = w->ww_w.l; 97 98 if (flags & WWO_PTY) { 99 if (wwgetpty(w) < 0) 100 goto bad; 101 w->ww_ispty = 1; 102 } else if (flags & WWO_SOCKET) { 103 int d[2]; 104 if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, d) < 0) { 105 wwerrno = WWE_SYS; 106 goto bad; 107 } 108 (void) fcntl(d[0], F_SETFD, 1); 109 (void) fcntl(d[1], F_SETFD, 1); 110 w->ww_pty = d[0]; 111 w->ww_socket = d[1]; 112 } 113 if (flags & (WWO_PTY|WWO_SOCKET)) { 114 if ((w->ww_ob = malloc(512)) == 0) { 115 wwerrno = WWE_NOMEM; 116 goto bad; 117 } 118 w->ww_obe = w->ww_ob + 512; 119 w->ww_obp = w->ww_obq = w->ww_ob; 120 } 121 122 w->ww_win = wwalloc(w->ww_w.t, w->ww_w.l, 123 w->ww_w.nr, w->ww_w.nc, sizeof (char)); 124 if (w->ww_win == 0) 125 goto bad; 126 m = 0; 127 if (flags & WWO_GLASS) 128 m |= WWM_GLS; 129 if (flags & WWO_REVERSE) 130 if (wwavailmodes & WWM_REV) 131 m |= WWM_REV; 132 else 133 flags &= ~WWO_REVERSE; 134 for (i = w->ww_w.t; i < w->ww_w.b; i++) 135 for (j = w->ww_w.l; j < w->ww_w.r; j++) 136 w->ww_win[i][j] = m; 137 138 if (flags & WWO_FRAME) { 139 w->ww_fmap = wwalloc(w->ww_w.t, w->ww_w.l, 140 w->ww_w.nr, w->ww_w.nc, sizeof (char)); 141 if (w->ww_fmap == 0) 142 goto bad; 143 for (i = w->ww_w.t; i < w->ww_w.b; i++) 144 for (j = w->ww_w.l; j < w->ww_w.r; j++) 145 w->ww_fmap[i][j] = 0; 146 } 147 148 w->ww_buf = (union ww_char **) 149 wwalloc(w->ww_b.t, w->ww_b.l, 150 w->ww_b.nr, w->ww_b.nc, sizeof (union ww_char)); 151 if (w->ww_buf == 0) 152 goto bad; 153 for (i = w->ww_b.t; i < w->ww_b.b; i++) 154 for (j = w->ww_b.l; j < w->ww_b.r; j++) 155 w->ww_buf[i][j].c_w = ' '; 156 157 w->ww_nvis = (short *)malloc((unsigned) w->ww_w.nr * sizeof (short)); 158 if (w->ww_nvis == 0) { 159 wwerrno = WWE_NOMEM; 160 goto bad; 161 } 162 w->ww_nvis -= w->ww_w.t; 163 nvis = m ? 0 : w->ww_w.nc; 164 for (i = w->ww_w.t; i < w->ww_w.b; i++) 165 w->ww_nvis[i] = nvis; 166 167 w->ww_state = WWS_INITIAL; 168 w->ww_oflags = flags; 169 return wwindex[w->ww_index] = w; 170 bad: 171 if (w != 0) { 172 if (w->ww_win != 0) 173 wwfree(w->ww_win, w->ww_w.t); 174 if (w->ww_fmap != 0) 175 wwfree(w->ww_fmap, w->ww_w.t); 176 if (w->ww_buf != 0) 177 wwfree((char **)w->ww_buf, w->ww_b.t); 178 if (w->ww_nvis != 0) 179 free((char *)(w->ww_nvis + w->ww_w.t)); 180 if (w->ww_ob != 0) 181 free(w->ww_ob); 182 if (w->ww_pty >= 0) 183 (void) close(w->ww_pty); 184 if (w->ww_socket >= 0) 185 (void) close(w->ww_socket); 186 free((char *)w); 187 } 188 return 0; 189 } 190