1 /* $NetBSD: wwopen.c,v 1.12 2003/08/07 11:17:42 agc Exp $ */ 2 3 /* 4 * Copyright (c) 1983, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Edward Wang at The University of California, Berkeley. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 #include <sys/cdefs.h> 36 #ifndef lint 37 #if 0 38 static char sccsid[] = "@(#)wwopen.c 8.2 (Berkeley) 4/28/95"; 39 #else 40 __RCSID("$NetBSD: wwopen.c,v 1.12 2003/08/07 11:17:42 agc Exp $"); 41 #endif 42 #endif /* not lint */ 43 44 #include <sys/types.h> 45 #include <sys/socket.h> 46 #include <fcntl.h> 47 #include <stdlib.h> 48 #include <unistd.h> 49 #include "ww.h" 50 51 struct ww * 52 wwopen(int type, int oflags, int nrow, int ncol, int row, int col, int nline) 53 { 54 struct ww *w; 55 int i, j; 56 char m; 57 short nvis; 58 59 w = (struct ww *)calloc(1, sizeof (struct ww)); 60 if (w == 0) { 61 wwerrno = WWE_NOMEM; 62 goto bad; 63 } 64 w->ww_pty = -1; 65 w->ww_socket = -1; 66 67 for (i = 0; i < NWW && wwindex[i] != 0; i++) 68 ; 69 if (i >= NWW) { 70 wwerrno = WWE_TOOMANY; 71 goto bad; 72 } 73 w->ww_index = i; 74 75 if (nline < nrow) 76 nline = nrow; 77 78 w->ww_w.t = row; 79 w->ww_w.b = row + nrow; 80 w->ww_w.l = col; 81 w->ww_w.r = col + ncol; 82 w->ww_w.nr = nrow; 83 w->ww_w.nc = ncol; 84 85 w->ww_b.t = row; 86 w->ww_b.b = row + nline; 87 w->ww_b.l = col; 88 w->ww_b.r = col + ncol; 89 w->ww_b.nr = nline; 90 w->ww_b.nc = ncol; 91 92 w->ww_i.t = MAX(w->ww_w.t, 0); 93 w->ww_i.b = MIN(w->ww_w.b, wwnrow); 94 w->ww_i.l = MAX(w->ww_w.l, 0); 95 w->ww_i.r = MIN(w->ww_w.r, wwncol); 96 w->ww_i.nr = w->ww_i.b - w->ww_i.t; 97 w->ww_i.nc = w->ww_i.r - w->ww_i.l; 98 99 w->ww_cur.r = w->ww_w.t; 100 w->ww_cur.c = w->ww_w.l; 101 102 w->ww_type = type; 103 switch (type) { 104 case WWT_PTY: 105 if (wwgetpty(w) < 0) 106 goto bad; 107 break; 108 case WWT_SOCKET: 109 { 110 int d[2]; 111 if (socketpair(AF_LOCAL, SOCK_STREAM, PF_UNSPEC, d) < 0) { 112 wwerrno = WWE_SYS; 113 goto bad; 114 } 115 (void) fcntl(d[0], F_SETFD, 1); 116 (void) fcntl(d[1], F_SETFD, 1); 117 w->ww_pty = d[0]; 118 w->ww_socket = d[1]; 119 break; 120 } 121 } 122 if (type != WWT_INTERNAL) { 123 if ((w->ww_ob = malloc(512)) == 0) { 124 wwerrno = WWE_NOMEM; 125 goto bad; 126 } 127 w->ww_obe = w->ww_ob + 512; 128 w->ww_obp = w->ww_obq = w->ww_ob; 129 if (w->ww_pty >= wwdtablesize) 130 wwdtablesize = w->ww_pty + 1; 131 } 132 133 w->ww_win = wwalloc(w->ww_w.t, w->ww_w.l, 134 w->ww_w.nr, w->ww_w.nc, sizeof (char)); 135 if (w->ww_win == 0) 136 goto bad; 137 m = 0; 138 if (oflags & WWO_GLASS) 139 m |= WWM_GLS; 140 if (oflags & WWO_REVERSE) { 141 if (wwavailmodes & WWM_REV) 142 m |= WWM_REV; 143 else oflags &= ~WWO_REVERSE; 144 } 145 for (i = w->ww_w.t; i < w->ww_w.b; i++) 146 for (j = w->ww_w.l; j < w->ww_w.r; j++) 147 w->ww_win[i][j] = m; 148 149 if (oflags & WWO_FRAME) { 150 w->ww_fmap = wwalloc(w->ww_w.t, w->ww_w.l, 151 w->ww_w.nr, w->ww_w.nc, sizeof (char)); 152 if (w->ww_fmap == 0) 153 goto bad; 154 for (i = w->ww_w.t; i < w->ww_w.b; i++) 155 for (j = w->ww_w.l; j < w->ww_w.r; j++) 156 w->ww_fmap[i][j] = 0; 157 } 158 159 w->ww_buf = (union ww_char **) 160 wwalloc(w->ww_b.t, w->ww_b.l, 161 w->ww_b.nr, w->ww_b.nc, sizeof (union ww_char)); 162 if (w->ww_buf == 0) 163 goto bad; 164 for (i = w->ww_b.t; i < w->ww_b.b; i++) 165 for (j = w->ww_b.l; j < w->ww_b.r; j++) 166 w->ww_buf[i][j].c_w = ' '; 167 168 w->ww_nvis = (short *)malloc((unsigned) w->ww_w.nr * sizeof (short)); 169 if (w->ww_nvis == 0) { 170 wwerrno = WWE_NOMEM; 171 goto bad; 172 } 173 w->ww_nvis -= w->ww_w.t; 174 nvis = m ? 0 : w->ww_w.nc; 175 for (i = w->ww_w.t; i < w->ww_w.b; i++) 176 w->ww_nvis[i] = nvis; 177 178 w->ww_state = WWS_INITIAL; 179 CLR(w->ww_oflags, WWO_ALLFLAGS); 180 SET(w->ww_oflags, oflags); 181 return wwindex[w->ww_index] = w; 182 bad: 183 if (w != 0) { 184 if (w->ww_win != 0) 185 wwfree(w->ww_win, w->ww_w.t); 186 if (w->ww_fmap != 0) 187 wwfree(w->ww_fmap, w->ww_w.t); 188 if (w->ww_buf != 0) 189 wwfree((char **)w->ww_buf, w->ww_b.t); 190 if (w->ww_nvis != 0) 191 free((char *)(w->ww_nvis + w->ww_w.t)); 192 if (w->ww_ob != 0) 193 free(w->ww_ob); 194 if (w->ww_pty >= 0) 195 (void) close(w->ww_pty); 196 if (w->ww_socket >= 0) 197 (void) close(w->ww_socket); 198 free((char *)w); 199 } 200 return 0; 201 } 202