280 lines
6.4 KiB
C
280 lines
6.4 KiB
C
/*
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* Asterisk -- An open source telephony toolkit.
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*
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* Copyright (C) 1999 - 2005, Digium, Inc.
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*
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* Mark Spencer <markster@digium.com>
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*
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* See http://www.asterisk.org for more information about
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* the Asterisk project. Please do not directly contact
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* any of the maintainers of this project for assistance;
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* the project provides a web site, mailing lists and IRC
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* channels for your use.
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*
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* This program is free software, distributed under the terms of
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* the GNU General Public License Version 2. See the LICENSE file
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* at the top of the source tree.
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*/
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/*! \file
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*
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* \brief Terminal Routines
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*
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/time.h>
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#include <signal.h>
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#include <errno.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include "asterisk.h"
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ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
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#include "asterisk/term.h"
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#include "asterisk/options.h"
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#include "asterisk/lock.h"
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#include "asterisk/utils.h"
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static int vt100compat = 0;
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static char prepdata[80] = "";
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static char enddata[80] = "";
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static char quitdata[80] = "";
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static const char *termpath[] = {
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"/usr/share/terminfo",
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"/usr/local/share/misc/terminfo",
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"/usr/lib/terminfo",
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NULL
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};
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/* Ripped off from Ross Ridge, but it's public domain code (libmytinfo) */
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static short convshort(char *s)
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{
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register int a,b;
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a = (int) s[0] & 0377;
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b = (int) s[1] & 0377;
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if (a == 0377 && b == 0377)
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return -1;
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if (a == 0376 && b == 0377)
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return -2;
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return a + b * 256;
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}
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int term_init(void)
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{
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char *term = getenv("TERM");
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char termfile[256] = "";
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char buffer[512] = "";
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int termfd = -1, parseokay = 0, i;
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if (!term)
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return 0;
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if (!option_console || option_nocolor || !option_nofork)
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return 0;
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for (i=0 ;; i++) {
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if (termpath[i] == NULL) {
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break;
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}
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snprintf(termfile, sizeof(termfile), "%s/%c/%s", termpath[i], *term, term);
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termfd = open(termfile, O_RDONLY);
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if (termfd > -1) {
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break;
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}
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}
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if (termfd > -1) {
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int actsize = read(termfd, buffer, sizeof(buffer) - 1);
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short sz_names = convshort(buffer + 2);
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short sz_bools = convshort(buffer + 4);
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short n_nums = convshort(buffer + 6);
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/* if ((sz_names + sz_bools) & 1)
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sz_bools++; */
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if (sz_names + sz_bools + n_nums < actsize) {
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/* Offset 13 is defined in /usr/include/term.h, though we do not
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* include it here, as it conflicts with include/asterisk/term.h */
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short max_colors = convshort(buffer + 12 + sz_names + sz_bools + 13 * 2);
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if (max_colors > 0) {
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vt100compat = 1;
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}
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parseokay = 1;
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}
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close(termfd);
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}
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if (!parseokay) {
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/* These comparisons should not be substrings nor case-insensitive, as
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* terminal types are very particular about how they treat suffixes and
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* capitalization. For example, terminal type 'linux-m' does NOT
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* support color, while 'linux' does. Not even all vt100* terminals
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* support color, either (e.g. 'vt100+fnkeys'). */
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if (!strcmp(term, "linux")) {
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vt100compat = 1;
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} else if (!strcmp(term, "xterm")) {
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vt100compat = 1;
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} else if (!strcmp(term, "xterm-color")) {
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vt100compat = 1;
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} else if (!strncmp(term, "Eterm", 5)) {
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/* Both entries which start with Eterm support color */
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vt100compat = 1;
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} else if (!strcmp(term, "vt100")) {
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vt100compat = 1;
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} else if (!strncmp(term, "crt", 3)) {
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/* Both crt terminals support color */
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vt100compat = 1;
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}
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}
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if (vt100compat) {
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/* Make commands show up in nice colors */
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snprintf(prepdata, sizeof(prepdata), "%c[%d;%d;%dm", ESC, ATTR_BRIGHT, COLOR_BROWN, COLOR_BLACK + 10);
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snprintf(enddata, sizeof(enddata), "%c[%d;%d;%dm", ESC, ATTR_RESET, COLOR_WHITE, COLOR_BLACK + 10);
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snprintf(quitdata, sizeof(quitdata), "%c[0m", ESC);
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}
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return 0;
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}
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char *term_color(char *outbuf, const char *inbuf, int fgcolor, int bgcolor, int maxout)
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{
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int attr=0;
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char tmp[40];
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if (!vt100compat) {
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ast_copy_string(outbuf, inbuf, maxout);
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return outbuf;
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}
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if (!fgcolor && !bgcolor) {
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ast_copy_string(outbuf, inbuf, maxout);
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return outbuf;
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}
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if ((fgcolor & 128) && (bgcolor & 128)) {
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/* Can't both be highlighted */
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ast_copy_string(outbuf, inbuf, maxout);
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return outbuf;
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}
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if (!bgcolor)
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bgcolor = COLOR_BLACK;
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if (bgcolor) {
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bgcolor &= ~128;
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bgcolor += 10;
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}
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if (fgcolor & 128) {
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attr = ATTR_BRIGHT;
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fgcolor &= ~128;
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}
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if (fgcolor && bgcolor) {
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snprintf(tmp, sizeof(tmp), "%d;%d", fgcolor, bgcolor);
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} else if (bgcolor) {
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snprintf(tmp, sizeof(tmp), "%d", bgcolor);
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} else if (fgcolor) {
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snprintf(tmp, sizeof(tmp), "%d", fgcolor);
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}
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if (attr) {
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snprintf(outbuf, maxout, "%c[%d;%sm%s%c[0;%d;%dm", ESC, attr, tmp, inbuf, ESC, COLOR_WHITE, COLOR_BLACK + 10);
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} else {
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snprintf(outbuf, maxout, "%c[%sm%s%c[0;%d;%dm", ESC, tmp, inbuf, ESC, COLOR_WHITE, COLOR_BLACK + 10);
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}
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return outbuf;
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}
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char *term_color_code(char *outbuf, int fgcolor, int bgcolor, int maxout)
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{
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int attr=0;
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char tmp[40];
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if ((!vt100compat) || (!fgcolor && !bgcolor)) {
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*outbuf = '\0';
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return outbuf;
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}
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if ((fgcolor & 128) && (bgcolor & 128)) {
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/* Can't both be highlighted */
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*outbuf = '\0';
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return outbuf;
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}
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if (!bgcolor)
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bgcolor = COLOR_BLACK;
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if (bgcolor) {
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bgcolor &= ~128;
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bgcolor += 10;
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}
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if (fgcolor & 128) {
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attr = ATTR_BRIGHT;
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fgcolor &= ~128;
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}
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if (fgcolor && bgcolor) {
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snprintf(tmp, sizeof(tmp), "%d;%d", fgcolor, bgcolor);
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} else if (bgcolor) {
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snprintf(tmp, sizeof(tmp), "%d", bgcolor);
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} else if (fgcolor) {
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snprintf(tmp, sizeof(tmp), "%d", fgcolor);
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}
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if (attr) {
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snprintf(outbuf, maxout, "%c[%d;%sm", ESC, attr, tmp);
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} else {
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snprintf(outbuf, maxout, "%c[%sm", ESC, tmp);
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}
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return outbuf;
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}
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char *term_strip(char *outbuf, char *inbuf, int maxout)
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{
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char *outbuf_ptr = outbuf, *inbuf_ptr = inbuf;
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while (outbuf_ptr < outbuf + maxout) {
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switch (*inbuf_ptr) {
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case ESC:
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while (*inbuf_ptr && (*inbuf_ptr != 'm'))
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inbuf_ptr++;
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break;
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default:
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*outbuf_ptr = *inbuf_ptr;
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outbuf_ptr++;
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}
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if (! *inbuf_ptr)
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break;
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inbuf_ptr++;
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}
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return outbuf;
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}
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char *term_prompt(char *outbuf, const char *inbuf, int maxout)
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{
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if (!vt100compat) {
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ast_copy_string(outbuf, inbuf, maxout);
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return outbuf;
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}
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snprintf(outbuf, maxout, "%c[%d;%d;%dm%c%c[%d;%d;%dm%s",
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ESC, ATTR_BRIGHT, COLOR_BLUE, COLOR_BLACK + 10,
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inbuf[0],
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ESC, 0, COLOR_WHITE, COLOR_BLACK + 10,
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inbuf + 1);
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return outbuf;
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}
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char *term_prep(void)
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{
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return prepdata;
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}
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char *term_end(void)
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{
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return enddata;
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}
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char *term_quit(void)
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{
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return quitdata;
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}
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