/* A portion of this file is from ncurses: */ /*************************************************************************** * COPYRIGHT NOTICE * **************************************************************************** * ncurses is copyright (C) 1992-1995 * * Zeyd M. Ben-Halim * * zmbenhal@netcom.com * * Eric S. Raymond * * esr@snark.thyrsus.com * * * * Permission is hereby granted to reproduce and distribute ncurses * * by any means and for any fee, whether alone or as part of a * * larger distribution, in source or in binary form, PROVIDED * * this notice is included with any such distribution, and is not * * removed from any of its header files. Mention of ncurses in any * * applications linked with it is highly appreciated. * * * * ncurses comes AS IS with no warranty, implied or expressed. * * * ***************************************************************************/ #include #include #include #include #include /* The rest is from BSD */ /* * Copyright (c) 1980, 1993 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include __FBSDID("$FreeBSD$"); #ifndef lint static const char sccsid[] = "@(#)termcap.c 8.1 (Berkeley) 6/4/93"; #endif /* not lint */ #include #include #include #include #include #include #include "pathnames.h" #define PBUFSIZ MAXPATHLEN /* max length of filename path */ #define PVECSIZ 32 /* max number of names in path */ #define TBUFSIZ 1024 /* max length of _nc_tgetent buffer */ char _nc_termcap[TBUFSIZ + 1]; /* Last getcap, provided to tgetent() emul */ /* * termcap - routines for dealing with the terminal capability data base * * BUG: Should use a "last" pointer in tbuf, so that searching * for capabilities alphabetically would not be a n**2/2 * process when large numbers of capabilities are given. * Note: If we add a last pointer now we will screw up the * tc capability. We really should compile termcap. * * Essentially all the work here is scanning and decoding escapes * in string capabilities. We don't use stdio because the editor * doesn't, and because living w/o it is not hard. */ /* * Get an entry for terminal name in buffer _nc_termcap from the termcap * file. */ int _nc_read_termcap_entry(const char *const name, TERMTYPE *const tp) { ENTRY *ep; char *p; char *cp; char *dummy; char **fname; char *home; int i; char pathbuf[PBUFSIZ]; /* holds raw path of filenames */ char *pathvec[PVECSIZ]; /* to point to names in pathbuf */ char **pvec; /* holds usable tail of path vector */ char *termpath; _nc_termcap[0] = '\0'; /* in case */ dummy = NULL; fname = pathvec; pvec = pathvec; p = pathbuf; cp = getenv("TERMCAP"); /* * TERMCAP can have one of two things in it. It can be the * name of a file to use instead of /etc/termcap. In this * case it better start with a "/". Or it can be an entry to * use so we don't have to read the file. In this case it * has to already have the newlines crunched out. If TERMCAP * does not hold a file name then a path of names is searched * instead. The path is found in the TERMPATH variable, or * becomes "$HOME/.termcap /etc/termcap" if no TERMPATH exists. */ if (!cp || *cp != '/') { /* no TERMCAP or it holds an entry */ if ( (termpath = getenv("TERMPATH")) ) strncpy(pathbuf, termpath, PBUFSIZ); else { if ( (home = getenv("HOME")) ) {/* set up default */ strncpy(pathbuf, home, PBUFSIZ - 1); /* $HOME first */ pathbuf[PBUFSIZ - 2] = '\0'; /* -2 because we add a slash */ p += strlen(pathbuf); /* path, looking in */ *p++ = '/'; } /* if no $HOME look in current directory */ strncpy(p, _PATH_DEF, PBUFSIZ - (p - pathbuf)); } } else /* user-defined name in TERMCAP */ strncpy(pathbuf, cp, PBUFSIZ); /* still can be tokenized */ /* For safety */ if (issetugid()) strcpy(pathbuf, _PATH_DEF_SEC); pathbuf[PBUFSIZ - 1] = '\0'; *fname++ = pathbuf; /* tokenize path into vector of names */ while (*++p) if (*p == ' ' || *p == ':') { *p = '\0'; while (*++p) if (*p != ' ' && *p != ':') break; if (*p == '\0') break; *fname++ = p; if (fname >= pathvec + PVECSIZ) { fname--; break; } } *fname = (char *) 0; /* mark end of vector */ if (cp && *cp && *cp != '/') if (cgetset(cp) < 0) return(-2); i = cgetent(&dummy, pathvec, (char *)name); if (i == 0) { char *pd, *ps, *tok, *s, *tcs; size_t len; pd = _nc_termcap; ps = dummy; if ((tok = strchr(ps, ':')) == NULL) { len = strlen(ps); if (len >= TBUFSIZ) i = -1; else strcpy(pd, ps); goto done; } len = tok - ps + 1; if (pd + len + 1 - _nc_termcap >= TBUFSIZ) { i = -1; goto done; } memcpy(pd, ps, len); ps += len; pd += len; *pd = '\0'; tcs = pd - 1; for (;;) { while ((tok = strsep(&ps, ":")) != NULL && *(tok - 2) != '\\' && (*tok == '\0' || *tok == '\\' || !isgraph(*tok))) ; if (tok == NULL) break; for (s = tcs; s != NULL && s[1] != '\0'; s = strchr(s, ':')) { s++; if (s[0] == tok[0] && s[1] == tok[1]) goto skip_it; } len = strlen(tok); if (pd + len + 1 - _nc_termcap >= TBUFSIZ) { i = -1; break; } memcpy(pd, tok, len); pd += len; *pd++ = ':'; *pd = '\0'; skip_it: ; } } done: if (dummy) free(dummy); /* * From here on is ncurses-specific glue code */ if (i < 0) return(ERR); _nc_set_source("TERMCAP"); _nc_read_entry_source((FILE *)NULL, _nc_termcap, FALSE, TRUE, NULLHOOK); if (_nc_head == (ENTRY *)NULL) return(ERR); /* resolve all use references */ _nc_resolve_uses(TRUE); for_entry_list(ep) if (_nc_name_match(ep->tterm.term_names, name, "|:")) { /* * Make a local copy of the terminal capabilities. free * all entry storage except the string table for the * loaded type (which we disconnected from the list by * NULLing out ep->tterm.str_table above). */ memcpy(tp, &ep->tterm, sizeof(TERMTYPE)); ep->tterm.str_table = (char *)NULL; _nc_free_entries(_nc_head); _nc_head = _nc_tail = NULL; /* do not reuse! */ return 1; /* OK */ } _nc_free_entries(_nc_head); _nc_head = _nc_tail = NULL; /* do not reuse! */ return(0); /* not found */ }