150276Speter/**************************************************************************** 2184989Srafan * Copyright (c) 1998-2007,2008 Free Software Foundation, Inc. * 350276Speter * * 450276Speter * Permission is hereby granted, free of charge, to any person obtaining a * 550276Speter * copy of this software and associated documentation files (the * 650276Speter * "Software"), to deal in the Software without restriction, including * 750276Speter * without limitation the rights to use, copy, modify, merge, publish, * 850276Speter * distribute, distribute with modifications, sublicense, and/or sell * 950276Speter * copies of the Software, and to permit persons to whom the Software is * 1050276Speter * furnished to do so, subject to the following conditions: * 1150276Speter * * 1250276Speter * The above copyright notice and this permission notice shall be included * 1350276Speter * in all copies or substantial portions of the Software. * 1450276Speter * * 1550276Speter * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * 1650276Speter * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * 1750276Speter * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * 1850276Speter * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * 1950276Speter * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * 2050276Speter * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * 2150276Speter * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * 2250276Speter * * 2350276Speter * Except as contained in this notice, the name(s) of the above copyright * 2450276Speter * holders shall not be used in advertising or otherwise to promote the * 2550276Speter * sale, use or other dealings in this Software without prior written * 2650276Speter * authorization. * 2750276Speter ****************************************************************************/ 2850276Speter 2950276Speter/**************************************************************************** 3050276Speter * Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 * 3150276Speter * and: Eric S. Raymond <esr@snark.thyrsus.com> * 32166124Srafan * and: Thomas E. Dickey 1996-on * 3350276Speter ****************************************************************************/ 3450276Speter 3550276Speter/* 3650276Speter * read_entry.c -- Routine for reading in a compiled terminfo file 3750276Speter */ 3850276Speter 3950276Speter#include <curses.priv.h> 40166124Srafan#include <hashed_db.h> 4150276Speter 4250276Speter#include <tic.h> 4350276Speter#include <term_entry.h> 4450276Speter 45184989SrafanMODULE_ID("$Id: read_entry.c,v 1.102 2008/08/03 19:33:04 tom Exp $") 4650276Speter 47166124Srafan#define TYPE_CALLOC(type,elts) typeCalloc(type, (unsigned)(elts)) 4850276Speter 49166124Srafan#if USE_DATABASE 5062449Speterstatic void 5162449Speterconvert_shorts(char *buf, short *Numbers, int count) 5250276Speter{ 5350276Speter int i; 5462449Speter for (i = 0; i < count; i++) { 5562449Speter if (IS_NEG1(buf + 2 * i)) 5650276Speter Numbers[i] = ABSENT_NUMERIC; 5762449Speter else if (IS_NEG2(buf + 2 * i)) 5850276Speter Numbers[i] = CANCELLED_NUMERIC; 5950276Speter else 6062449Speter Numbers[i] = LOW_MSB(buf + 2 * i); 6162449Speter TR(TRACE_DATABASE, ("get Numbers[%d]=%d", i, Numbers[i])); 6250276Speter } 6350276Speter} 6450276Speter 6562449Speterstatic void 6662449Speterconvert_strings(char *buf, char **Strings, int count, int size, char *table) 6750276Speter{ 6850276Speter int i; 6950276Speter char *p; 7050276Speter 7150276Speter for (i = 0; i < count; i++) { 7262449Speter if (IS_NEG1(buf + 2 * i)) { 7350276Speter Strings[i] = ABSENT_STRING; 7462449Speter } else if (IS_NEG2(buf + 2 * i)) { 7550276Speter Strings[i] = CANCELLED_STRING; 76184989Srafan } else if ((int) LOW_MSB(buf + 2 * i) > size) { 7750276Speter Strings[i] = ABSENT_STRING; 7850276Speter } else { 7962449Speter Strings[i] = (LOW_MSB(buf + 2 * i) + table); 8062449Speter TR(TRACE_DATABASE, ("Strings[%d] = %s", i, _nc_visbuf(Strings[i]))); 8150276Speter } 8250276Speter 8350276Speter /* make sure all strings are NUL terminated */ 8450276Speter if (VALID_STRING(Strings[i])) { 8550276Speter for (p = Strings[i]; p <= table + size; p++) 8650276Speter if (*p == '\0') 8750276Speter break; 8850276Speter /* if there is no NUL, ignore the string */ 8950276Speter if (p > table + size) 9050276Speter Strings[i] = ABSENT_STRING; 9150276Speter } 9250276Speter } 9350276Speter} 9450276Speter 95166124Srafanstatic int 96166124Srafanfake_read(char *src, int *offset, int limit, char *dst, unsigned want) 97166124Srafan{ 98166124Srafan int have = (limit - *offset); 9950276Speter 100166124Srafan if (have > 0) { 101166124Srafan if ((int) want > have) 102166124Srafan want = have; 103166124Srafan memcpy(dst, src + *offset, want); 104166124Srafan *offset += want; 105166124Srafan } else { 106166124Srafan want = 0; 107166124Srafan } 108166124Srafan return (int) want; 109166124Srafan} 110166124Srafan 111166124Srafan#define Read(buf, count) fake_read(buffer, &offset, limit, buf, count) 112166124Srafan 113166124Srafan#define read_shorts(buf, count) \ 114166124Srafan (Read(buf, (unsigned) (count)*2) == (int) (count)*2) 115166124Srafan 11650276Speter#define even_boundary(value) \ 117166124Srafan if ((value) % 2 != 0) Read(buf, 1) 11850276Speter 119166124SrafanNCURSES_EXPORT(int) 120166124Srafan_nc_read_termtype(TERMTYPE *ptr, char *buffer, int limit) 12150276Speter/* return 1 if read, 0 if not found or garbled */ 12250276Speter{ 123166124Srafan int offset = 0; 12462449Speter int name_size, bool_count, num_count, str_count, str_size; 12562449Speter int i; 126166124Srafan char buf[MAX_ENTRY_SIZE + 1]; 127166124Srafan char *string_table; 128166124Srafan unsigned want, have; 12950276Speter 130166124Srafan TR(TRACE_DATABASE, ("READ termtype header @%d", offset)); 13150276Speter 13262449Speter memset(ptr, 0, sizeof(*ptr)); 13362449Speter 13450276Speter /* grab the header */ 135166124Srafan if (!read_shorts(buf, 6) 136166124Srafan || !IS_TIC_MAGIC(buf)) { 137166124Srafan return (TGETENT_NO); 13850276Speter } 13950276Speter 14062449Speter name_size = LOW_MSB(buf + 2); 14150276Speter bool_count = LOW_MSB(buf + 4); 14262449Speter num_count = LOW_MSB(buf + 6); 14362449Speter str_count = LOW_MSB(buf + 8); 14462449Speter str_size = LOW_MSB(buf + 10); 14550276Speter 14662449Speter TR(TRACE_DATABASE, 14766963Speter ("TERMTYPE name_size=%d, bool=%d/%d, num=%d/%d str=%d/%d(%d)", 14866963Speter name_size, bool_count, BOOLCOUNT, num_count, NUMCOUNT, 14966963Speter str_count, STRCOUNT, str_size)); 15062449Speter if (name_size < 0 15162449Speter || bool_count < 0 15262449Speter || num_count < 0 15362449Speter || str_count < 0 15462449Speter || str_size < 0) { 155166124Srafan return (TGETENT_NO); 15650276Speter } 15750276Speter 158166124Srafan want = str_size + name_size + 1; 15950276Speter if (str_size) { 16050276Speter /* try to allocate space for the string table */ 16162449Speter if (str_count * 2 >= (int) sizeof(buf) 162166124Srafan || (string_table = typeMalloc(char, want)) == 0) { 163166124Srafan return (TGETENT_NO); 16450276Speter } 16550276Speter } else { 16650276Speter str_count = 0; 167166124Srafan if ((string_table = typeMalloc(char, want)) == 0) { 168166124Srafan return (TGETENT_NO); 169166124Srafan } 17050276Speter } 17150276Speter 172166124Srafan /* grab the name (a null-terminated string) */ 173166124Srafan want = min(MAX_NAME_SIZE, (unsigned) name_size); 174166124Srafan ptr->str_table = string_table; 175166124Srafan ptr->term_names = string_table; 176166124Srafan if ((have = Read(ptr->term_names, want)) != want) { 177166124Srafan memset(ptr->term_names + have, 0, want - have); 17850276Speter } 179166124Srafan ptr->term_names[want] = '\0'; 180166124Srafan string_table += (want + 1); 18150276Speter 182166124Srafan if (have > MAX_NAME_SIZE) 183166124Srafan offset = (have - MAX_NAME_SIZE); 184166124Srafan 18550276Speter /* grab the booleans */ 186166124Srafan if ((ptr->Booleans = TYPE_CALLOC(NCURSES_SBOOL, 187166124Srafan max(BOOLCOUNT, bool_count))) == 0 188166124Srafan || Read(ptr->Booleans, (unsigned) bool_count) < bool_count) { 189166124Srafan return (TGETENT_NO); 19050276Speter } 19150276Speter 19250276Speter /* 19350276Speter * If booleans end on an odd byte, skip it. The machine they 19450276Speter * originally wrote terminfo on must have been a 16-bit 19550276Speter * word-oriented machine that would trap out if you tried a 19650276Speter * word access off a 2-byte boundary. 19750276Speter */ 19850276Speter even_boundary(name_size + bool_count); 19950276Speter 20050276Speter /* grab the numbers */ 201166124Srafan if ((ptr->Numbers = TYPE_CALLOC(short, max(NUMCOUNT, num_count))) == 0 202166124Srafan || !read_shorts(buf, num_count)) { 203166124Srafan return (TGETENT_NO); 20450276Speter } 20550276Speter convert_shorts(buf, ptr->Numbers, num_count); 20650276Speter 207166124Srafan if ((ptr->Strings = TYPE_CALLOC(char *, max(STRCOUNT, str_count))) == 0) 208166124Srafan return (TGETENT_NO); 20950276Speter 21062449Speter if (str_count) { 21150276Speter /* grab the string offsets */ 212166124Srafan if (!read_shorts(buf, str_count)) { 213166124Srafan return (TGETENT_NO); 21450276Speter } 21550276Speter /* finally, grab the string table itself */ 216166124Srafan if (Read(string_table, (unsigned) str_size) != str_size) 217166124Srafan return (TGETENT_NO); 218166124Srafan convert_strings(buf, ptr->Strings, str_count, str_size, string_table); 21950276Speter } 22050276Speter#if NCURSES_XNAMES 22150276Speter 22250276Speter ptr->num_Booleans = BOOLCOUNT; 22362449Speter ptr->num_Numbers = NUMCOUNT; 22462449Speter ptr->num_Strings = STRCOUNT; 22550276Speter 22650276Speter /* 22750276Speter * Read extended entries, if any, after the normal end of terminfo data. 22850276Speter */ 22950276Speter even_boundary(str_size); 230166124Srafan TR(TRACE_DATABASE, ("READ extended_header @%d", offset)); 231166124Srafan if (_nc_user_definable && read_shorts(buf, 5)) { 23250276Speter int ext_bool_count = LOW_MSB(buf + 0); 23362449Speter int ext_num_count = LOW_MSB(buf + 2); 23462449Speter int ext_str_count = LOW_MSB(buf + 4); 23562449Speter int ext_str_size = LOW_MSB(buf + 6); 23662449Speter int ext_str_limit = LOW_MSB(buf + 8); 237166124Srafan unsigned need = (ext_bool_count + ext_num_count + ext_str_count); 23850276Speter int base = 0; 23950276Speter 240166124Srafan if (need >= sizeof(buf) 24162449Speter || ext_str_size >= (int) sizeof(buf) 24262449Speter || ext_str_limit >= (int) sizeof(buf) 24362449Speter || ext_bool_count < 0 24462449Speter || ext_num_count < 0 24562449Speter || ext_str_count < 0 24662449Speter || ext_str_size < 0 24762449Speter || ext_str_limit < 0) 248166124Srafan return (TGETENT_NO); 24950276Speter 25050276Speter ptr->num_Booleans = BOOLCOUNT + ext_bool_count; 25162449Speter ptr->num_Numbers = NUMCOUNT + ext_num_count; 25262449Speter ptr->num_Strings = STRCOUNT + ext_str_count; 25350276Speter 254166124Srafan ptr->Booleans = typeRealloc(NCURSES_SBOOL, ptr->num_Booleans, ptr->Booleans); 25550276Speter ptr->Numbers = typeRealloc(short, ptr->num_Numbers, ptr->Numbers); 25662449Speter ptr->Strings = typeRealloc(char *, ptr->num_Strings, ptr->Strings); 25750276Speter 25862449Speter TR(TRACE_DATABASE, ("extended header is %d/%d/%d(%d:%d)", 25966963Speter ext_bool_count, ext_num_count, ext_str_count, 26066963Speter ext_str_size, ext_str_limit)); 26150276Speter 26262449Speter TR(TRACE_DATABASE, ("READ %d extended-booleans @%d", 263166124Srafan ext_bool_count, offset)); 26450276Speter if ((ptr->ext_Booleans = ext_bool_count) != 0) { 265166124Srafan if (Read(ptr->Booleans + BOOLCOUNT, (unsigned) 26666963Speter ext_bool_count) != ext_bool_count) 267166124Srafan return (TGETENT_NO); 26850276Speter } 26950276Speter even_boundary(ext_bool_count); 27050276Speter 27162449Speter TR(TRACE_DATABASE, ("READ %d extended-numbers @%d", 272166124Srafan ext_num_count, offset)); 27350276Speter if ((ptr->ext_Numbers = ext_num_count) != 0) { 274166124Srafan if (!read_shorts(buf, ext_num_count)) 275166124Srafan return (TGETENT_NO); 27662449Speter TR(TRACE_DATABASE, ("Before converting extended-numbers")); 27750276Speter convert_shorts(buf, ptr->Numbers + NUMCOUNT, ext_num_count); 27850276Speter } 27950276Speter 280166124Srafan TR(TRACE_DATABASE, ("READ extended-offsets @%d", offset)); 28150276Speter if ((ext_str_count || need) 282166124Srafan && !read_shorts(buf, ext_str_count + need)) 283166124Srafan return (TGETENT_NO); 28450276Speter 28562449Speter TR(TRACE_DATABASE, ("READ %d bytes of extended-strings @%d", 286166124Srafan ext_str_limit, offset)); 28762449Speter 28850276Speter if (ext_str_limit) { 28950276Speter if ((ptr->ext_str_table = typeMalloc(char, ext_str_limit)) == 0) 290166124Srafan return (TGETENT_NO); 291166124Srafan if (Read(ptr->ext_str_table, (unsigned) ext_str_limit) != ext_str_limit) 292166124Srafan return (TGETENT_NO); 29362449Speter TR(TRACE_DATABASE, ("first extended-string is %s", _nc_visbuf(ptr->ext_str_table))); 29450276Speter } 29550276Speter 29650276Speter if ((ptr->ext_Strings = ext_str_count) != 0) { 29762449Speter TR(TRACE_DATABASE, 29866963Speter ("Before computing extended-string capabilities str_count=%d, ext_str_count=%d", 29966963Speter str_count, ext_str_count)); 30062449Speter convert_strings(buf, ptr->Strings + str_count, ext_str_count, 30166963Speter ext_str_limit, ptr->ext_str_table); 30262449Speter for (i = ext_str_count - 1; i >= 0; i--) { 30362449Speter TR(TRACE_DATABASE, ("MOVE from [%d:%d] %s", 30466963Speter i, i + str_count, 30566963Speter _nc_visbuf(ptr->Strings[i + str_count]))); 30662449Speter ptr->Strings[i + STRCOUNT] = ptr->Strings[i + str_count]; 30762449Speter if (VALID_STRING(ptr->Strings[i + STRCOUNT])) 30862449Speter base += (strlen(ptr->Strings[i + STRCOUNT]) + 1); 30962449Speter TR(TRACE_DATABASE, ("... to [%d] %s", 31066963Speter i + STRCOUNT, 31166963Speter _nc_visbuf(ptr->Strings[i + STRCOUNT]))); 31250276Speter } 31350276Speter } 31450276Speter 31550276Speter if (need) { 316184989Srafan if (ext_str_count >= (MAX_ENTRY_SIZE * 2)) 317184989Srafan return (TGETENT_NO); 318166124Srafan if ((ptr->ext_Names = TYPE_CALLOC(char *, need)) == 0) 319166124Srafan return (TGETENT_NO); 32062449Speter TR(TRACE_DATABASE, 32166963Speter ("ext_NAMES starting @%d in extended_strings, first = %s", 32266963Speter base, _nc_visbuf(ptr->ext_str_table + base))); 323166124Srafan convert_strings(buf + (2 * ext_str_count), 324166124Srafan ptr->ext_Names, 325166124Srafan (int) need, 32666963Speter ext_str_limit, ptr->ext_str_table + base); 32750276Speter } 32850276Speter 32950276Speter T(("...done reading terminfo bool %d(%d) num %d(%d) str %d(%d)", 33066963Speter ptr->num_Booleans, ptr->ext_Booleans, 33166963Speter ptr->num_Numbers, ptr->ext_Numbers, 33266963Speter ptr->num_Strings, ptr->ext_Strings)); 33350276Speter 33462449Speter TR(TRACE_DATABASE, ("extend: num_Booleans:%d", ptr->num_Booleans)); 33550276Speter } else 33650276Speter#endif /* NCURSES_XNAMES */ 33750276Speter { 33850276Speter T(("...done reading terminfo bool %d num %d str %d", 33966963Speter bool_count, num_count, str_count)); 34062449Speter#if NCURSES_XNAMES 34162449Speter TR(TRACE_DATABASE, ("normal: num_Booleans:%d", ptr->num_Booleans)); 34262449Speter#endif 34350276Speter } 34450276Speter 34550276Speter for (i = bool_count; i < BOOLCOUNT; i++) 34650276Speter ptr->Booleans[i] = FALSE; 34750276Speter for (i = num_count; i < NUMCOUNT; i++) 34850276Speter ptr->Numbers[i] = ABSENT_NUMERIC; 34950276Speter for (i = str_count; i < STRCOUNT; i++) 35050276Speter ptr->Strings[i] = ABSENT_STRING; 35150276Speter 352166124Srafan return (TGETENT_YES); 35350276Speter} 35450276Speter 355166124Srafan/* 356166124Srafan * int 357166124Srafan * _nc_read_file_entry(filename, ptr) 358166124Srafan * 359166124Srafan * Read the compiled terminfo entry in the given file into the 360166124Srafan * structure pointed to by ptr, allocating space for the string 361166124Srafan * table. 362166124Srafan */ 36376726SpeterNCURSES_EXPORT(int) 364166124Srafan_nc_read_file_entry(const char *const filename, TERMTYPE *ptr) 36550276Speter/* return 1 if read, 0 if not found or garbled */ 36650276Speter{ 36750276Speter int code, fd = -1; 368166124Srafan int limit; 369166124Srafan char buffer[MAX_ENTRY_SIZE + 1]; 37050276Speter 37150276Speter if (_nc_access(filename, R_OK) < 0 37262449Speter || (fd = open(filename, O_RDONLY | O_BINARY)) < 0) { 37350276Speter T(("cannot open terminfo %s (errno=%d)", filename, errno)); 374166124Srafan code = TGETENT_NO; 375166124Srafan } else { 376166124Srafan if ((limit = read(fd, buffer, sizeof(buffer))) > 0) { 377166124Srafan 378166124Srafan T(("read terminfo %s", filename)); 379166124Srafan if ((code = _nc_read_termtype(ptr, buffer, limit)) == TGETENT_NO) { 380166124Srafan _nc_free_termtype(ptr); 381166124Srafan } 382166124Srafan } else { 383166124Srafan code = TGETENT_NO; 384166124Srafan } 385166124Srafan close(fd); 38650276Speter } 38750276Speter 38850276Speter return (code); 38950276Speter} 39050276Speter 39150276Speter/* 392166124Srafan * Build a terminfo pathname and try to read the data. Returns TGETENT_YES on 393166124Srafan * success, TGETENT_NO on failure. 39450276Speter */ 39562449Speterstatic int 396166124Srafan_nc_read_tic_entry(char *filename, 397166124Srafan unsigned limit, 398166124Srafan const char *const path, 399166124Srafan const char *name, 400166124Srafan TERMTYPE *const tp) 40150276Speter{ 402166124Srafan int result = TGETENT_NO; 40350276Speter 404166124Srafan /* 405166124Srafan * If we are looking in a directory, assume the entry is a file under that, 406166124Srafan * according to the normal rules. 407166124Srafan * 408166124Srafan * FIXME - add caseless-filename fixup. 409166124Srafan */ 410166124Srafan if (_nc_is_dir_path(path)) { 411166124Srafan unsigned need = 4 + strlen(path) + strlen(name); 41250276Speter 413166124Srafan if (need <= limit) { 414174993Srafan (void) sprintf(filename, "%s/" LEAF_FMT "/%s", path, *name, name); 415166124Srafan result = _nc_read_file_entry(filename, tp); 416166124Srafan } 417166124Srafan } 418166124Srafan#if USE_HASHED_DB 419166124Srafan else { 420166124Srafan static const char suffix[] = DBM_SUFFIX; 421166124Srafan DB *capdbp; 422166124Srafan unsigned lens = sizeof(suffix) - 1; 423166124Srafan unsigned size = strlen(path); 424166124Srafan unsigned need = lens + size; 42550276Speter 426166124Srafan if (need <= limit) { 427166124Srafan if (size >= lens 428166124Srafan && !strcmp(path + size - lens, suffix)) 429166124Srafan (void) strcpy(filename, path); 430166124Srafan else 431166124Srafan (void) sprintf(filename, "%s%s", path, suffix); 43250276Speter 433166124Srafan /* 434166124Srafan * It would be nice to optimize the dbopen/close activity, as 435166124Srafan * done in the cgetent implementation for tc= clauses. However, 436166124Srafan * since we support multiple database locations, we cannot do 437166124Srafan * that. 438166124Srafan */ 439166124Srafan if ((capdbp = _nc_db_open(filename, FALSE)) != 0) { 440166124Srafan DBT key, data; 441166124Srafan int reccnt = 0; 442166124Srafan char *save = strdup(name); 443166124Srafan 444166124Srafan memset(&key, 0, sizeof(key)); 445166124Srafan key.data = save; 446166124Srafan key.size = strlen(save); 447166124Srafan 448166124Srafan /* 449166124Srafan * This lookup could return termcap data, which we do not want. 450166124Srafan * We are looking for compiled (binary) terminfo data. 451166124Srafan * 452166124Srafan * cgetent uses a two-level lookup. On the first it uses the 453166124Srafan * given name to return a record containing only the aliases 454166124Srafan * for an entry. On the second (using that list of aliases as 455166124Srafan * a key), it returns the content of the terminal description. 456166124Srafan * We expect second lookup to return data beginning with the 457166124Srafan * same set of aliases. 458166124Srafan * 459166124Srafan * For compiled terminfo, the list of aliases in the second 460166124Srafan * case will be null-terminated. A termcap entry will not be, 461166124Srafan * and will run on into the description. So we can easily 462166124Srafan * distinguish between the two (source/binary) by checking the 463166124Srafan * lengths. 464166124Srafan */ 465166124Srafan while (_nc_db_get(capdbp, &key, &data) == 0) { 466166124Srafan int used = data.size - 1; 467166124Srafan char *have = (char *) data.data; 468166124Srafan 469166124Srafan if (*have++ == 0) { 470166124Srafan if (data.size > key.size 471166124Srafan && IS_TIC_MAGIC(have)) { 472166124Srafan result = _nc_read_termtype(tp, have, used); 473166124Srafan if (result == TGETENT_NO) { 474166124Srafan _nc_free_termtype(tp); 475166124Srafan } 476166124Srafan } 477166124Srafan break; 478166124Srafan } 479166124Srafan 480166124Srafan /* 481166124Srafan * Just in case we have a corrupt database, do not waste 482166124Srafan * time with it. 483166124Srafan */ 484166124Srafan if (++reccnt >= 3) 485166124Srafan break; 486166124Srafan 487166124Srafan /* 488166124Srafan * Prepare for the second level. 489166124Srafan */ 490166124Srafan key.data = have; 491166124Srafan key.size = used; 492166124Srafan } 493166124Srafan 494166124Srafan _nc_db_close(capdbp); 495166124Srafan free(save); 49662449Speter } 49750276Speter } 49862449Speter } 499166124Srafan#endif 500166124Srafan return result; 50150276Speter} 502166124Srafan#endif /* USE_DATABASE */ 50350276Speter 50450276Speter/* 505166124Srafan * _nc_read_entry(char *name, char *filename, TERMTYPE *tp) 50650276Speter * 50750276Speter * Find and read the compiled entry for a given terminal type, 50850276Speter * if it exists. We take pains here to make sure no combination 50950276Speter * of environment variables and terminal type name can be used to 51050276Speter * overrun the file buffer. 51150276Speter */ 51250276Speter 51376726SpeterNCURSES_EXPORT(int) 514166124Srafan_nc_read_entry(const char *const name, char *const filename, TERMTYPE *const tp) 51550276Speter{ 516166124Srafan int code = TGETENT_NO; 51750276Speter 518166124Srafan if (strlen(name) == 0 519166124Srafan || strcmp(name, ".") == 0 520166124Srafan || strcmp(name, "..") == 0 521166124Srafan || _nc_pathlast(name) != 0 522166124Srafan || strchr(name, NCURSES_PATHSEP) != 0) { 523166124Srafan T(("illegal or missing entry name '%s'", name)); 524166124Srafan } else { 525166124Srafan#if USE_DATABASE 526166124Srafan DBDIRS state = dbdTIC; 527166124Srafan int offset = 0; 528166124Srafan const char *path; 52950276Speter 530166124Srafan while ((path = _nc_next_db(&state, &offset)) != 0) { 531166124Srafan code = _nc_read_tic_entry(filename, PATH_MAX, path, name, tp); 532166124Srafan if (code == TGETENT_YES) { 533166124Srafan _nc_last_db(); 534166124Srafan break; 53566963Speter } 53650276Speter } 537166124Srafan#endif 538166124Srafan#if USE_TERMCAP 539166124Srafan if (code != TGETENT_YES) { 540166124Srafan code = _nc_read_termcap_entry(name, tp); 541166124Srafan sprintf(filename, "%.*s", PATH_MAX - 1, _nc_get_source()); 542166124Srafan } 543166124Srafan#endif 54462449Speter } 545166124Srafan return code; 54650276Speter} 547