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