diff options
Diffstat (limited to 'contrib/ncurses/ncurses/tinfo/read_entry.c')
-rw-r--r-- | contrib/ncurses/ncurses/tinfo/read_entry.c | 544 |
1 files changed, 0 insertions, 544 deletions
diff --git a/contrib/ncurses/ncurses/tinfo/read_entry.c b/contrib/ncurses/ncurses/tinfo/read_entry.c deleted file mode 100644 index 6a050ee..0000000 --- a/contrib/ncurses/ncurses/tinfo/read_entry.c +++ /dev/null @@ -1,544 +0,0 @@ -/**************************************************************************** - * Copyright (c) 1998-2006,2007 Free Software Foundation, Inc. * - * * - * Permission is hereby granted, free of charge, to any person obtaining a * - * copy of this software and associated documentation files (the * - * "Software"), to deal in the Software without restriction, including * - * without limitation the rights to use, copy, modify, merge, publish, * - * distribute, distribute with modifications, sublicense, and/or sell * - * copies of the Software, and to permit persons to whom the Software is * - * furnished to do so, subject to the following conditions: * - * * - * The above copyright notice and this permission notice shall be included * - * in all copies or substantial portions of the Software. * - * * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * - * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * - * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * - * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * - * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * - * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * - * * - * Except as contained in this notice, the name(s) of the above copyright * - * holders shall not be used in advertising or otherwise to promote the * - * sale, use or other dealings in this Software without prior written * - * authorization. * - ****************************************************************************/ - -/**************************************************************************** - * Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 * - * and: Eric S. Raymond <esr@snark.thyrsus.com> * - * and: Thomas E. Dickey 1996-on * - ****************************************************************************/ - -/* - * read_entry.c -- Routine for reading in a compiled terminfo file - */ - -#include <curses.priv.h> -#include <hashed_db.h> - -#include <tic.h> -#include <term_entry.h> - -MODULE_ID("$Id: read_entry.c,v 1.100 2007/11/17 23:56:50 tom Exp $") - -#define TYPE_CALLOC(type,elts) typeCalloc(type, (unsigned)(elts)) - -#if USE_DATABASE -static void -convert_shorts(char *buf, short *Numbers, int count) -{ - int i; - for (i = 0; i < count; i++) { - if (IS_NEG1(buf + 2 * i)) - Numbers[i] = ABSENT_NUMERIC; - else if (IS_NEG2(buf + 2 * i)) - Numbers[i] = CANCELLED_NUMERIC; - else - Numbers[i] = LOW_MSB(buf + 2 * i); - TR(TRACE_DATABASE, ("get Numbers[%d]=%d", i, Numbers[i])); - } -} - -static void -convert_strings(char *buf, char **Strings, int count, int size, char *table) -{ - int i; - char *p; - - for (i = 0; i < count; i++) { - if (IS_NEG1(buf + 2 * i)) { - Strings[i] = ABSENT_STRING; - } else if (IS_NEG2(buf + 2 * i)) { - Strings[i] = CANCELLED_STRING; - } else if (LOW_MSB(buf + 2 * i) > size) { - Strings[i] = ABSENT_STRING; - } else { - Strings[i] = (LOW_MSB(buf + 2 * i) + table); - TR(TRACE_DATABASE, ("Strings[%d] = %s", i, _nc_visbuf(Strings[i]))); - } - - /* make sure all strings are NUL terminated */ - if (VALID_STRING(Strings[i])) { - for (p = Strings[i]; p <= table + size; p++) - if (*p == '\0') - break; - /* if there is no NUL, ignore the string */ - if (p > table + size) - Strings[i] = ABSENT_STRING; - } - } -} - -static int -fake_read(char *src, int *offset, int limit, char *dst, unsigned want) -{ - int have = (limit - *offset); - - if (have > 0) { - if ((int) want > have) - want = have; - memcpy(dst, src + *offset, want); - *offset += want; - } else { - want = 0; - } - return (int) want; -} - -#define Read(buf, count) fake_read(buffer, &offset, limit, buf, count) - -#define read_shorts(buf, count) \ - (Read(buf, (unsigned) (count)*2) == (int) (count)*2) - -#define even_boundary(value) \ - if ((value) % 2 != 0) Read(buf, 1) - -NCURSES_EXPORT(int) -_nc_read_termtype(TERMTYPE *ptr, char *buffer, int limit) -/* return 1 if read, 0 if not found or garbled */ -{ - int offset = 0; - int name_size, bool_count, num_count, str_count, str_size; - int i; - char buf[MAX_ENTRY_SIZE + 1]; - char *string_table; - unsigned want, have; - - TR(TRACE_DATABASE, ("READ termtype header @%d", offset)); - - memset(ptr, 0, sizeof(*ptr)); - - /* grab the header */ - if (!read_shorts(buf, 6) - || !IS_TIC_MAGIC(buf)) { - return (TGETENT_NO); - } - - name_size = LOW_MSB(buf + 2); - bool_count = LOW_MSB(buf + 4); - num_count = LOW_MSB(buf + 6); - str_count = LOW_MSB(buf + 8); - str_size = LOW_MSB(buf + 10); - - TR(TRACE_DATABASE, - ("TERMTYPE name_size=%d, bool=%d/%d, num=%d/%d str=%d/%d(%d)", - name_size, bool_count, BOOLCOUNT, num_count, NUMCOUNT, - str_count, STRCOUNT, str_size)); - if (name_size < 0 - || bool_count < 0 - || num_count < 0 - || str_count < 0 - || str_size < 0) { - return (TGETENT_NO); - } - - want = str_size + name_size + 1; - if (str_size) { - /* try to allocate space for the string table */ - if (str_count * 2 >= (int) sizeof(buf) - || (string_table = typeMalloc(char, want)) == 0) { - return (TGETENT_NO); - } - } else { - str_count = 0; - if ((string_table = typeMalloc(char, want)) == 0) { - return (TGETENT_NO); - } - } - - /* grab the name (a null-terminated string) */ - want = min(MAX_NAME_SIZE, (unsigned) name_size); - ptr->str_table = string_table; - ptr->term_names = string_table; - if ((have = Read(ptr->term_names, want)) != want) { - memset(ptr->term_names + have, 0, want - have); - } - ptr->term_names[want] = '\0'; - string_table += (want + 1); - - if (have > MAX_NAME_SIZE) - offset = (have - MAX_NAME_SIZE); - - /* grab the booleans */ - if ((ptr->Booleans = TYPE_CALLOC(NCURSES_SBOOL, - max(BOOLCOUNT, bool_count))) == 0 - || Read(ptr->Booleans, (unsigned) bool_count) < bool_count) { - return (TGETENT_NO); - } - - /* - * If booleans end on an odd byte, skip it. The machine they - * originally wrote terminfo on must have been a 16-bit - * word-oriented machine that would trap out if you tried a - * word access off a 2-byte boundary. - */ - even_boundary(name_size + bool_count); - - /* grab the numbers */ - if ((ptr->Numbers = TYPE_CALLOC(short, max(NUMCOUNT, num_count))) == 0 - || !read_shorts(buf, num_count)) { - return (TGETENT_NO); - } - convert_shorts(buf, ptr->Numbers, num_count); - - if ((ptr->Strings = TYPE_CALLOC(char *, max(STRCOUNT, str_count))) == 0) - return (TGETENT_NO); - - if (str_count) { - /* grab the string offsets */ - if (!read_shorts(buf, str_count)) { - return (TGETENT_NO); - } - /* finally, grab the string table itself */ - if (Read(string_table, (unsigned) str_size) != str_size) - return (TGETENT_NO); - convert_strings(buf, ptr->Strings, str_count, str_size, string_table); - } -#if NCURSES_XNAMES - - ptr->num_Booleans = BOOLCOUNT; - ptr->num_Numbers = NUMCOUNT; - ptr->num_Strings = STRCOUNT; - - /* - * Read extended entries, if any, after the normal end of terminfo data. - */ - even_boundary(str_size); - TR(TRACE_DATABASE, ("READ extended_header @%d", offset)); - if (_nc_user_definable && read_shorts(buf, 5)) { - int ext_bool_count = LOW_MSB(buf + 0); - int ext_num_count = LOW_MSB(buf + 2); - int ext_str_count = LOW_MSB(buf + 4); - int ext_str_size = LOW_MSB(buf + 6); - int ext_str_limit = LOW_MSB(buf + 8); - unsigned need = (ext_bool_count + ext_num_count + ext_str_count); - int base = 0; - - if (need >= sizeof(buf) - || ext_str_size >= (int) sizeof(buf) - || ext_str_limit >= (int) sizeof(buf) - || ext_bool_count < 0 - || ext_num_count < 0 - || ext_str_count < 0 - || ext_str_size < 0 - || ext_str_limit < 0) - return (TGETENT_NO); - - ptr->num_Booleans = BOOLCOUNT + ext_bool_count; - ptr->num_Numbers = NUMCOUNT + ext_num_count; - ptr->num_Strings = STRCOUNT + ext_str_count; - - ptr->Booleans = typeRealloc(NCURSES_SBOOL, ptr->num_Booleans, ptr->Booleans); - ptr->Numbers = typeRealloc(short, ptr->num_Numbers, ptr->Numbers); - ptr->Strings = typeRealloc(char *, ptr->num_Strings, ptr->Strings); - - TR(TRACE_DATABASE, ("extended header is %d/%d/%d(%d:%d)", - ext_bool_count, ext_num_count, ext_str_count, - ext_str_size, ext_str_limit)); - - TR(TRACE_DATABASE, ("READ %d extended-booleans @%d", - ext_bool_count, offset)); - if ((ptr->ext_Booleans = ext_bool_count) != 0) { - if (Read(ptr->Booleans + BOOLCOUNT, (unsigned) - ext_bool_count) != ext_bool_count) - return (TGETENT_NO); - } - even_boundary(ext_bool_count); - - TR(TRACE_DATABASE, ("READ %d extended-numbers @%d", - ext_num_count, offset)); - if ((ptr->ext_Numbers = ext_num_count) != 0) { - if (!read_shorts(buf, ext_num_count)) - return (TGETENT_NO); - TR(TRACE_DATABASE, ("Before converting extended-numbers")); - convert_shorts(buf, ptr->Numbers + NUMCOUNT, ext_num_count); - } - - TR(TRACE_DATABASE, ("READ extended-offsets @%d", offset)); - if ((ext_str_count || need) - && !read_shorts(buf, ext_str_count + need)) - return (TGETENT_NO); - - TR(TRACE_DATABASE, ("READ %d bytes of extended-strings @%d", - ext_str_limit, offset)); - - if (ext_str_limit) { - if ((ptr->ext_str_table = typeMalloc(char, ext_str_limit)) == 0) - return (TGETENT_NO); - if (Read(ptr->ext_str_table, (unsigned) ext_str_limit) != ext_str_limit) - return (TGETENT_NO); - TR(TRACE_DATABASE, ("first extended-string is %s", _nc_visbuf(ptr->ext_str_table))); - } - - if ((ptr->ext_Strings = ext_str_count) != 0) { - TR(TRACE_DATABASE, - ("Before computing extended-string capabilities str_count=%d, ext_str_count=%d", - str_count, ext_str_count)); - convert_strings(buf, ptr->Strings + str_count, ext_str_count, - ext_str_limit, ptr->ext_str_table); - for (i = ext_str_count - 1; i >= 0; i--) { - TR(TRACE_DATABASE, ("MOVE from [%d:%d] %s", - i, i + str_count, - _nc_visbuf(ptr->Strings[i + str_count]))); - ptr->Strings[i + STRCOUNT] = ptr->Strings[i + str_count]; - if (VALID_STRING(ptr->Strings[i + STRCOUNT])) - base += (strlen(ptr->Strings[i + STRCOUNT]) + 1); - TR(TRACE_DATABASE, ("... to [%d] %s", - i + STRCOUNT, - _nc_visbuf(ptr->Strings[i + STRCOUNT]))); - } - } - - if (need) { - if ((ptr->ext_Names = TYPE_CALLOC(char *, need)) == 0) - return (TGETENT_NO); - TR(TRACE_DATABASE, - ("ext_NAMES starting @%d in extended_strings, first = %s", - base, _nc_visbuf(ptr->ext_str_table + base))); - convert_strings(buf + (2 * ext_str_count), - ptr->ext_Names, - (int) need, - ext_str_limit, ptr->ext_str_table + base); - } - - T(("...done reading terminfo bool %d(%d) num %d(%d) str %d(%d)", - ptr->num_Booleans, ptr->ext_Booleans, - ptr->num_Numbers, ptr->ext_Numbers, - ptr->num_Strings, ptr->ext_Strings)); - - TR(TRACE_DATABASE, ("extend: num_Booleans:%d", ptr->num_Booleans)); - } else -#endif /* NCURSES_XNAMES */ - { - T(("...done reading terminfo bool %d num %d str %d", - bool_count, num_count, str_count)); -#if NCURSES_XNAMES - TR(TRACE_DATABASE, ("normal: num_Booleans:%d", ptr->num_Booleans)); -#endif - } - - for (i = bool_count; i < BOOLCOUNT; i++) - ptr->Booleans[i] = FALSE; - for (i = num_count; i < NUMCOUNT; i++) - ptr->Numbers[i] = ABSENT_NUMERIC; - for (i = str_count; i < STRCOUNT; i++) - ptr->Strings[i] = ABSENT_STRING; - - return (TGETENT_YES); -} - -/* - * int - * _nc_read_file_entry(filename, ptr) - * - * Read the compiled terminfo entry in the given file into the - * structure pointed to by ptr, allocating space for the string - * table. - */ -NCURSES_EXPORT(int) -_nc_read_file_entry(const char *const filename, TERMTYPE *ptr) -/* return 1 if read, 0 if not found or garbled */ -{ - int code, fd = -1; - int limit; - char buffer[MAX_ENTRY_SIZE + 1]; - - if (_nc_access(filename, R_OK) < 0 - || (fd = open(filename, O_RDONLY | O_BINARY)) < 0) { - T(("cannot open terminfo %s (errno=%d)", filename, errno)); - code = TGETENT_NO; - } else { - if ((limit = read(fd, buffer, sizeof(buffer))) > 0) { - - T(("read terminfo %s", filename)); - if ((code = _nc_read_termtype(ptr, buffer, limit)) == TGETENT_NO) { - _nc_free_termtype(ptr); - } - } else { - code = TGETENT_NO; - } - close(fd); - } - - return (code); -} - -/* - * Build a terminfo pathname and try to read the data. Returns TGETENT_YES on - * success, TGETENT_NO on failure. - */ -static int -_nc_read_tic_entry(char *filename, - unsigned limit, - const char *const path, - const char *name, - TERMTYPE *const tp) -{ - int result = TGETENT_NO; - - /* - * If we are looking in a directory, assume the entry is a file under that, - * according to the normal rules. - * - * FIXME - add caseless-filename fixup. - */ - if (_nc_is_dir_path(path)) { - unsigned need = 4 + strlen(path) + strlen(name); - - if (need <= limit) { - (void) sprintf(filename, "%s/" LEAF_FMT "/%s", path, *name, name); - result = _nc_read_file_entry(filename, tp); - } - } -#if USE_HASHED_DB - else { - static const char suffix[] = DBM_SUFFIX; - DB *capdbp; - unsigned lens = sizeof(suffix) - 1; - unsigned size = strlen(path); - unsigned need = lens + size; - - if (need <= limit) { - if (size >= lens - && !strcmp(path + size - lens, suffix)) - (void) strcpy(filename, path); - else - (void) sprintf(filename, "%s%s", path, suffix); - - /* - * It would be nice to optimize the dbopen/close activity, as - * done in the cgetent implementation for tc= clauses. However, - * since we support multiple database locations, we cannot do - * that. - */ - if ((capdbp = _nc_db_open(filename, FALSE)) != 0) { - DBT key, data; - int reccnt = 0; - char *save = strdup(name); - - memset(&key, 0, sizeof(key)); - key.data = save; - key.size = strlen(save); - - /* - * This lookup could return termcap data, which we do not want. - * We are looking for compiled (binary) terminfo data. - * - * cgetent uses a two-level lookup. On the first it uses the - * given name to return a record containing only the aliases - * for an entry. On the second (using that list of aliases as - * a key), it returns the content of the terminal description. - * We expect second lookup to return data beginning with the - * same set of aliases. - * - * For compiled terminfo, the list of aliases in the second - * case will be null-terminated. A termcap entry will not be, - * and will run on into the description. So we can easily - * distinguish between the two (source/binary) by checking the - * lengths. - */ - while (_nc_db_get(capdbp, &key, &data) == 0) { - int used = data.size - 1; - char *have = (char *) data.data; - - if (*have++ == 0) { - if (data.size > key.size - && IS_TIC_MAGIC(have)) { - result = _nc_read_termtype(tp, have, used); - if (result == TGETENT_NO) { - _nc_free_termtype(tp); - } - } - break; - } - - /* - * Just in case we have a corrupt database, do not waste - * time with it. - */ - if (++reccnt >= 3) - break; - - /* - * Prepare for the second level. - */ - key.data = have; - key.size = used; - } - - _nc_db_close(capdbp); - free(save); - } - } - } -#endif - return result; -} -#endif /* USE_DATABASE */ - -/* - * _nc_read_entry(char *name, char *filename, TERMTYPE *tp) - * - * Find and read the compiled entry for a given terminal type, - * if it exists. We take pains here to make sure no combination - * of environment variables and terminal type name can be used to - * overrun the file buffer. - */ - -NCURSES_EXPORT(int) -_nc_read_entry(const char *const name, char *const filename, TERMTYPE *const tp) -{ - int code = TGETENT_NO; - - if (strlen(name) == 0 - || strcmp(name, ".") == 0 - || strcmp(name, "..") == 0 - || _nc_pathlast(name) != 0 - || strchr(name, NCURSES_PATHSEP) != 0) { - T(("illegal or missing entry name '%s'", name)); - } else { -#if USE_DATABASE - DBDIRS state = dbdTIC; - int offset = 0; - const char *path; - - while ((path = _nc_next_db(&state, &offset)) != 0) { - code = _nc_read_tic_entry(filename, PATH_MAX, path, name, tp); - if (code == TGETENT_YES) { - _nc_last_db(); - break; - } - } -#endif -#if USE_TERMCAP - if (code != TGETENT_YES) { - code = _nc_read_termcap_entry(name, tp); - sprintf(filename, "%.*s", PATH_MAX - 1, _nc_get_source()); - } -#endif - } - return code; -} |