X-Git-Url: https://ncurses.scripts.mit.edu/?p=ncurses.git;a=blobdiff_plain;f=ncurses%2Ftinfo%2Fread_entry.c;h=3cb0241095dd622e117b6fd5ec6d9a7031fef4d2;hp=532e5a35ac94d9a891a0c633a619ee72bd800f75;hb=86b16a498d6d545c03dceff7636d269eb7eb1e8f;hpb=01cec7497c02ab7ca6f0791cc2c7dfbdb2ba9272

diff --git a/ncurses/tinfo/read_entry.c b/ncurses/tinfo/read_entry.c
index 532e5a35..3cb02410 100644
--- a/ncurses/tinfo/read_entry.c
+++ b/ncurses/tinfo/read_entry.c
@@ -1,5 +1,5 @@
 /****************************************************************************
- * Copyright (c) 1998-2007,2008 Free Software Foundation, Inc.              *
+ * Copyright (c) 1998-2016,2017 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            *
@@ -40,15 +40,16 @@
 #include <hashed_db.h>
 
 #include <tic.h>
-#include <term_entry.h>
 
-MODULE_ID("$Id: read_entry.c,v 1.101 2008/07/12 20:23:13 tom Exp $")
+MODULE_ID("$Id: read_entry.c,v 1.143 2017/04/06 22:19:06 tom Exp $")
 
 #define TYPE_CALLOC(type,elts) typeCalloc(type, (unsigned)(elts))
 
-#if USE_DATABASE
+#define MyNumber(n) (short) LOW_MSB(n)
+
+#if NCURSES_USE_DATABASE
 static void
-convert_shorts(char *buf, short *Numbers, int count)
+convert_numbers(char *buf, NCURSES_INT2 *Numbers, int count)
 {
     int i;
     for (i = 0; i < count; i++) {
@@ -57,7 +58,7 @@ convert_shorts(char *buf, short *Numbers, int count)
 	else if (IS_NEG2(buf + 2 * i))
 	    Numbers[i] = CANCELLED_NUMERIC;
 	else
-	    Numbers[i] = LOW_MSB(buf + 2 * i);
+	    Numbers[i] = MyNumber(buf + 2 * i);
 	TR(TRACE_DATABASE, ("get Numbers[%d]=%d", i, Numbers[i]));
     }
 }
@@ -73,10 +74,10 @@ convert_strings(char *buf, char **Strings, int count, int size, char *table)
 	    Strings[i] = ABSENT_STRING;
 	} else if (IS_NEG2(buf + 2 * i)) {
 	    Strings[i] = CANCELLED_STRING;
-	} else if ((int) LOW_MSB(buf + 2 * i) > size) {
+	} else if (MyNumber(buf + 2 * i) > size) {
 	    Strings[i] = ABSENT_STRING;
 	} else {
-	    Strings[i] = (LOW_MSB(buf + 2 * i) + table);
+	    Strings[i] = (MyNumber(buf + 2 * i) + table);
 	    TR(TRACE_DATABASE, ("Strings[%d] = %s", i, _nc_visbuf(Strings[i])));
 	}
 
@@ -99,34 +100,88 @@ fake_read(char *src, int *offset, int limit, char *dst, unsigned want)
 
     if (have > 0) {
 	if ((int) want > have)
-	    want = have;
-	memcpy(dst, src + *offset, want);
-	*offset += want;
+	    want = (unsigned) have;
+	memcpy(dst, src + *offset, (size_t) want);
+	*offset += (int) want;
     } else {
 	want = 0;
     }
     return (int) want;
 }
 
-#define Read(buf, count) fake_read(buffer, &offset, limit, buf, count)
+#define Read(buf, count) fake_read(buffer, &offset, limit, (char *) buf, (unsigned) count)
 
 #define read_shorts(buf, count) \
-	(Read(buf, (unsigned) (count)*2) == (int) (count)*2)
+	(Read(buf, (count)*2) == (int) (count)*2)
 
 #define even_boundary(value) \
     if ((value) % 2 != 0) Read(buf, 1)
+#endif
+
+NCURSES_EXPORT(void)
+_nc_init_termtype(TERMTYPE2 *const tp)
+{
+    unsigned i;
+
+#if NCURSES_XNAMES
+    tp->num_Booleans = BOOLCOUNT;
+    tp->num_Numbers = NUMCOUNT;
+    tp->num_Strings = STRCOUNT;
+    tp->ext_Booleans = 0;
+    tp->ext_Numbers = 0;
+    tp->ext_Strings = 0;
+#endif
+    if (tp->Booleans == 0)
+	TYPE_MALLOC(NCURSES_SBOOL, BOOLCOUNT, tp->Booleans);
+    if (tp->Numbers == 0)
+	TYPE_MALLOC(NCURSES_INT2, NUMCOUNT, tp->Numbers);
+    if (tp->Strings == 0)
+	TYPE_MALLOC(char *, STRCOUNT, tp->Strings);
+
+    for_each_boolean(i, tp)
+	tp->Booleans[i] = FALSE;
+
+    for_each_number(i, tp)
+	tp->Numbers[i] = ABSENT_NUMERIC;
 
+    for_each_string(i, tp)
+	tp->Strings[i] = ABSENT_STRING;
+}
+
+#if NCURSES_USE_DATABASE
+#if NCURSES_XNAMES
+static bool
+valid_shorts(char *buffer, int limit)
+{
+    bool result = FALSE;
+    int n;
+    for (n = 0; n < limit; ++n) {
+	if (MyNumber(buffer + (n * 2)) > 0) {
+	    result = TRUE;
+	    break;
+	}
+    }
+    return result;
+}
+#endif
+
+/*
+ * Return TGETENT_YES if read, TGETENT_NO if not found or garbled.
+ */
 NCURSES_EXPORT(int)
-_nc_read_termtype(TERMTYPE *ptr, char *buffer, int limit)
-/* return 1 if read, 0 if not found or garbled */
+_nc_read_termtype(TERMTYPE2 *ptr, char *buffer, int limit)
 {
     int offset = 0;
     int name_size, bool_count, num_count, str_count, str_size;
     int i;
-    char buf[MAX_ENTRY_SIZE + 1];
+    char buf[MAX_ENTRY_SIZE + 2];
     char *string_table;
     unsigned want, have;
 
+    TR(TRACE_DATABASE,
+       (T_CALLED("_nc_read_termtype(ptr=%p, buffer=%p, limit=%d)"),
+	(void *) ptr, buffer, limit));
+
     TR(TRACE_DATABASE, ("READ termtype header @%d", offset));
 
     memset(ptr, 0, sizeof(*ptr));
@@ -134,14 +189,15 @@ _nc_read_termtype(TERMTYPE *ptr, char *buffer, int limit)
     /* grab the header */
     if (!read_shorts(buf, 6)
 	|| !IS_TIC_MAGIC(buf)) {
-	return (TGETENT_NO);
+	returnDB(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);
+    /* *INDENT-EQLS* */
+    name_size  = MyNumber(buf + 2);
+    bool_count = MyNumber(buf + 4);
+    num_count  = MyNumber(buf + 6);
+    str_count  = MyNumber(buf + 8);
+    str_size   = MyNumber(buf + 10);
 
     TR(TRACE_DATABASE,
        ("TERMTYPE name_size=%d, bool=%d/%d, num=%d/%d str=%d/%d(%d)",
@@ -152,41 +208,34 @@ _nc_read_termtype(TERMTYPE *ptr, char *buffer, int limit)
 	|| num_count < 0
 	|| str_count < 0
 	|| str_size < 0) {
-	return (TGETENT_NO);
+	returnDB(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);
-	}
+    want = (unsigned) (str_size + name_size + 1);
+    /* try to allocate space for the string table */
+    if (str_count * 2 >= MAX_ENTRY_SIZE
+	|| (string_table = typeMalloc(char, want)) == 0) {
+	returnDB(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);
+    if ((have = (unsigned) Read(ptr->term_names, want)) != want) {
+	memset(ptr->term_names + have, 0, (size_t) (want - have));
     }
     ptr->term_names[want] = '\0';
     string_table += (want + 1);
 
     if (have > MAX_NAME_SIZE)
-	offset = (have - MAX_NAME_SIZE);
+	offset = (int) (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);
+	returnDB(TGETENT_NO);
     }
 
     /*
@@ -198,23 +247,25 @@ _nc_read_termtype(TERMTYPE *ptr, char *buffer, int limit)
     even_boundary(name_size + bool_count);
 
     /* grab the numbers */
-    if ((ptr->Numbers = TYPE_CALLOC(short, max(NUMCOUNT, num_count))) == 0
+    if (!(ptr->Numbers = TYPE_CALLOC(NCURSES_INT2, max(NUMCOUNT, num_count)))
 	|| !read_shorts(buf, num_count)) {
-	return (TGETENT_NO);
+	returnDB(TGETENT_NO);
     }
-    convert_shorts(buf, ptr->Numbers, num_count);
+    convert_numbers(buf, ptr->Numbers, num_count);
 
-    if ((ptr->Strings = TYPE_CALLOC(char *, max(STRCOUNT, str_count))) == 0)
-	  return (TGETENT_NO);
+    if ((ptr->Strings = TYPE_CALLOC(char *, max(STRCOUNT, str_count))) == 0) {
+	returnDB(TGETENT_NO);
+    }
 
     if (str_count) {
 	/* grab the string offsets */
 	if (!read_shorts(buf, str_count)) {
-	    return (TGETENT_NO);
+	    returnDB(TGETENT_NO);
 	}
 	/* finally, grab the string table itself */
-	if (Read(string_table, (unsigned) str_size) != str_size)
-	    return (TGETENT_NO);
+	if (Read(string_table, (unsigned) str_size) != str_size) {
+	    returnDB(TGETENT_NO);
+	}
 	convert_strings(buf, ptr->Strings, str_count, str_size, string_table);
     }
 #if NCURSES_XNAMES
@@ -228,32 +279,33 @@ _nc_read_termtype(TERMTYPE *ptr, char *buffer, int limit)
      */
     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);
+    if (_nc_user_definable && read_shorts(buf, 5) && valid_shorts(buf, 5)) {
+	int ext_bool_count = MyNumber(buf + 0);
+	int ext_num_count = MyNumber(buf + 2);
+	int ext_str_count = MyNumber(buf + 4);
+	int ext_str_size = MyNumber(buf + 6);
+	int ext_str_limit = MyNumber(buf + 8);
+	unsigned need = (unsigned) (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)
+	if (need >= (MAX_ENTRY_SIZE / 2)
+	    || ext_str_size >= MAX_ENTRY_SIZE
+	    || ext_str_limit >= MAX_ENTRY_SIZE
 	    || ext_bool_count < 0
 	    || ext_num_count < 0
 	    || ext_str_count < 0
 	    || ext_str_size < 0
-	    || ext_str_limit < 0)
-	    return (TGETENT_NO);
+	    || ext_str_limit < 0) {
+	    returnDB(TGETENT_NO);
+	}
 
-	ptr->num_Booleans = BOOLCOUNT + ext_bool_count;
-	ptr->num_Numbers = NUMCOUNT + ext_num_count;
-	ptr->num_Strings = STRCOUNT + ext_str_count;
+	ptr->num_Booleans = UShort(BOOLCOUNT + ext_bool_count);
+	ptr->num_Numbers = UShort(NUMCOUNT + ext_num_count);
+	ptr->num_Strings = UShort(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);
+	TYPE_REALLOC(NCURSES_SBOOL, ptr->num_Booleans, ptr->Booleans);
+	TYPE_REALLOC(NCURSES_INT2, ptr->num_Numbers, ptr->Numbers);
+	TYPE_REALLOC(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,
@@ -261,39 +313,48 @@ _nc_read_termtype(TERMTYPE *ptr, char *buffer, int limit)
 
 	TR(TRACE_DATABASE, ("READ %d extended-booleans @%d",
 			    ext_bool_count, offset));
-	if ((ptr->ext_Booleans = ext_bool_count) != 0) {
+	if ((ptr->ext_Booleans = UShort(ext_bool_count)) != 0) {
 	    if (Read(ptr->Booleans + BOOLCOUNT, (unsigned)
-		     ext_bool_count) != ext_bool_count)
-		return (TGETENT_NO);
+		     ext_bool_count) != ext_bool_count) {
+		returnDB(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);
+	if ((ptr->ext_Numbers = UShort(ext_num_count)) != 0) {
+	    if (!read_shorts(buf, ext_num_count)) {
+		returnDB(TGETENT_NO);
+	    }
 	    TR(TRACE_DATABASE, ("Before converting extended-numbers"));
-	    convert_shorts(buf, ptr->Numbers + NUMCOUNT, ext_num_count);
+	    convert_numbers(buf, ptr->Numbers + NUMCOUNT, ext_num_count);
 	}
 
 	TR(TRACE_DATABASE, ("READ extended-offsets @%d", offset));
+	if ((unsigned) (ext_str_count + (int) need) >= (MAX_ENTRY_SIZE / 2)) {
+	    returnDB(TGETENT_NO);
+	}
 	if ((ext_str_count || need)
-	    && !read_shorts(buf, ext_str_count + need))
-	    return (TGETENT_NO);
+	    && !read_shorts(buf, ext_str_count + (int) need)) {
+	    returnDB(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);
+	    ptr->ext_str_table = typeMalloc(char, (size_t) ext_str_limit);
+	    if (ptr->ext_str_table == 0) {
+		returnDB(TGETENT_NO);
+	    }
+	    if (Read(ptr->ext_str_table, (unsigned) ext_str_limit) != ext_str_limit) {
+		returnDB(TGETENT_NO);
+	    }
 	    TR(TRACE_DATABASE, ("first extended-string is %s", _nc_visbuf(ptr->ext_str_table)));
 	}
 
-	if ((ptr->ext_Strings = ext_str_count) != 0) {
+	if ((ptr->ext_Strings = UShort(ext_str_count)) != 0) {
 	    TR(TRACE_DATABASE,
 	       ("Before computing extended-string capabilities str_count=%d, ext_str_count=%d",
 		str_count, ext_str_count));
@@ -305,7 +366,7 @@ _nc_read_termtype(TERMTYPE *ptr, char *buffer, int limit)
 				    _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);
+		    base += (int) (strlen(ptr->Strings[i + STRCOUNT]) + 1);
 		TR(TRACE_DATABASE, ("... to    [%d] %s",
 				    i + STRCOUNT,
 				    _nc_visbuf(ptr->Strings[i + STRCOUNT])));
@@ -313,8 +374,12 @@ _nc_read_termtype(TERMTYPE *ptr, char *buffer, int limit)
 	}
 
 	if (need) {
-	    if ((ptr->ext_Names = TYPE_CALLOC(char *, need)) == 0)
-		  return (TGETENT_NO);
+	    if (ext_str_count >= (MAX_ENTRY_SIZE / 2)) {
+		returnDB(TGETENT_NO);
+	    }
+	    if ((ptr->ext_Names = TYPE_CALLOC(char *, need)) == 0) {
+		returnDB(TGETENT_NO);
+	    }
 	    TR(TRACE_DATABASE,
 	       ("ext_NAMES starting @%d in extended_strings, first = %s",
 		base, _nc_visbuf(ptr->ext_str_table + base)));
@@ -324,17 +389,18 @@ _nc_read_termtype(TERMTYPE *ptr, char *buffer, int limit)
 			    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,
+	   ("...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));
+	TR(TRACE_DATABASE, ("...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
@@ -347,7 +413,7 @@ _nc_read_termtype(TERMTYPE *ptr, char *buffer, int limit)
     for (i = str_count; i < STRCOUNT; i++)
 	ptr->Strings[i] = ABSENT_STRING;
 
-    return (TGETENT_YES);
+    returnDB(TGETENT_YES);
 }
 
 /*
@@ -359,33 +425,188 @@ _nc_read_termtype(TERMTYPE *ptr, char *buffer, int limit)
  *	table.
  */
 NCURSES_EXPORT(int)
-_nc_read_file_entry(const char *const filename, TERMTYPE *ptr)
+_nc_read_file_entry(const char *const filename, TERMTYPE2 *ptr)
 /* return 1 if read, 0 if not found or garbled */
 {
-    int code, fd = -1;
-    int limit;
-    char buffer[MAX_ENTRY_SIZE + 1];
+    FILE *fp = 0;
+    int code;
 
     if (_nc_access(filename, R_OK) < 0
-	|| (fd = open(filename, O_RDONLY | O_BINARY)) < 0) {
-	T(("cannot open terminfo %s (errno=%d)", filename, errno));
+	|| (fp = fopen(filename, "rb")) == 0) {
+	TR(TRACE_DATABASE, ("cannot open terminfo %s (errno=%d)", filename, errno));
 	code = TGETENT_NO;
     } else {
-	if ((limit = read(fd, buffer, sizeof(buffer))) > 0) {
+	int limit;
+	char buffer[MAX_ENTRY_SIZE + 1];
+
+	if ((limit = (int) fread(buffer, sizeof(char), sizeof(buffer), fp))
+	    > 0) {
 
-	    T(("read terminfo %s", filename));
+	    TR(TRACE_DATABASE, ("read terminfo %s", filename));
 	    if ((code = _nc_read_termtype(ptr, buffer, limit)) == TGETENT_NO) {
-		_nc_free_termtype(ptr);
+		_nc_free_termtype2(ptr);
 	    }
 	} else {
 	    code = TGETENT_NO;
 	}
-	close(fd);
+	fclose(fp);
     }
 
     return (code);
 }
 
+#if USE_HASHED_DB
+/*
+ * Return if if we can build the filename of a ".db" file.
+ */
+static bool
+make_db_filename(char *filename, unsigned limit, const char *const path)
+{
+    static const char suffix[] = DBM_SUFFIX;
+
+    size_t lens = sizeof(suffix) - 1;
+    size_t size = strlen(path);
+    size_t test = lens + size;
+    bool result = FALSE;
+
+    if (test < limit) {
+	if (size >= lens
+	    && !strcmp(path + size - lens, suffix))
+	    _nc_STRCPY(filename, path, limit);
+	else
+	    _nc_SPRINTF(filename, _nc_SLIMIT(limit) "%s%s", path, suffix);
+	result = TRUE;
+    }
+    return result;
+}
+#endif
+
+/*
+ * Return true if we can build the name of a filesystem entry.
+ */
+static bool
+make_dir_filename(char *filename,
+		  unsigned limit,
+		  const char *const path,
+		  const char *name)
+{
+    bool result = FALSE;
+
+#if NCURSES_USE_TERMCAP
+    if (_nc_is_dir_path(path))
+#endif
+    {
+	unsigned need = (unsigned) (LEAF_LEN + 3 + strlen(path) + strlen(name));
+
+	if (need <= limit) {
+	    _nc_SPRINTF(filename, _nc_SLIMIT(limit)
+			"%s/" LEAF_FMT "/%s", path, *name, name);
+	    result = TRUE;
+	}
+    }
+    return result;
+}
+
+static int
+lookup_b64(int *target, const char **source)
+{
+    int result = 3;
+    int j;
+    /*
+     * ncurses' quickdump writes only RFC 4648 "url/filename-safe" encoding,
+     * but accepts RFC-3548
+     */
+    for (j = 0; j < 4; ++j) {
+	int ch = UChar(**source);
+	*source += 1;
+	if (ch >= 'A' && ch <= 'Z') {
+	    target[j] = (ch - 'A');
+	} else if (ch >= 'a' && ch <= 'z') {
+	    target[j] = 26 + (ch - 'a');
+	} else if (ch >= '0' && ch <= '9') {
+	    target[j] = 52 + (ch - '0');
+	} else if (ch == '-' || ch == '+') {
+	    target[j] = 62;
+	} else if (ch == '_' || ch == '/') {
+	    target[j] = 63;
+	} else if (ch == '=') {
+	    target[j] = 64;
+	    result--;
+	} else {
+	    result = -1;
+	    break;
+	}
+    }
+    return result;
+}
+
+static int
+decode_hex(const char **source)
+{
+    int result = 0;
+    int nibble;
+    int ch;
+
+    for (nibble = 0; nibble < 2; ++nibble) {
+	result <<= 4;
+	ch = UChar(**source);
+	*source += 1;
+	if (ch >= '0' && ch <= '9') {
+	    ch -= '0';
+	} else if (ch >= 'A' && ch <= 'F') {
+	    ch -= 'A';
+	    ch += 10;
+	} else if (ch >= 'a' && ch <= 'f') {
+	    ch -= 'a';
+	    ch += 10;
+	} else {
+	    result = -1;
+	    break;
+	}
+	result |= ch;
+    }
+    return result;
+}
+
+static int
+decode_quickdump(char *target, const char *source)
+{
+    char *base = target;
+    int result = 0;
+
+    if (!strncmp(source, "b64:", 4)) {
+	source += 4;
+	while (*source != '\0') {
+	    int bits[4];
+	    int ch = lookup_b64(bits, &source);
+	    if (ch < 0 || (ch + target - base) >= MAX_ENTRY_SIZE) {
+		result = 0;
+		break;
+	    }
+	    result += ch;
+	    *target++ = (char) ((bits[0] << 2) | (bits[1] >> 4));
+	    if (bits[2] < 64) {
+		*target++ = (char) ((bits[1] << 4) | (bits[2] >> 2));
+		if (bits[3] < 64) {
+		    *target++ = (char) ((bits[2] << 6) | bits[3]);
+		}
+	    }
+	}
+    } else if (!strncmp(source, "hex:", 4)) {
+	source += 4;
+	while (*source != '\0') {
+	    int ch = decode_hex(&source);
+	    if (ch < 0 || (target - base) >= MAX_ENTRY_SIZE) {
+		result = 0;
+		break;
+	    }
+	    *target++ = (char) ch;
+	    ++result;
+	}
+    }
+    return result;
+}
+
 /*
  * Build a terminfo pathname and try to read the data.  Returns TGETENT_YES on
  * success, TGETENT_NO on failure.
@@ -395,136 +616,124 @@ _nc_read_tic_entry(char *filename,
 		   unsigned limit,
 		   const char *const path,
 		   const char *name,
-		   TERMTYPE *const tp)
+		   TERMTYPE2 *const tp)
 {
-    int result = TGETENT_NO;
+    int code = TGETENT_NO;
+#if USE_HASHED_DB
+    DB *capdbp;
+#endif
+    char buffer[MAX_ENTRY_SIZE + 1];
+    int used;
 
-    /*
-     * 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);
+    TR(TRACE_DATABASE,
+       (T_CALLED("_nc_read_tic_entry(file=%p, path=%s, name=%s)"),
+	filename, path, name));
 
-	if (need <= limit) {
-	    (void) sprintf(filename, "%s/" LEAF_FMT "/%s", path, *name, name);
-	    result = _nc_read_file_entry(filename, tp);
-	}
-    }
+    if ((used = decode_quickdump(buffer, path)) != 0
+	&& (code = _nc_read_termtype(tp, buffer, used)) == TGETENT_YES
+	&& _nc_name_match(tp->term_names, name, "|")) {
+	TR(TRACE_DATABASE, ("loaded quick-dump for %s", name));
+    } else
 #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);
+	if (make_db_filename(filename, limit, path)
+	    && (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) {
+	    char *have = (char *) data.data;
+	    used = (int) data.size - 1;
+
+	    if (*have++ == 0) {
+		if (data.size > key.size
+		    && IS_TIC_MAGIC(have)) {
+		    code = _nc_read_termtype(tp, have, used);
+		    if (code == TGETENT_NO) {
+			_nc_free_termtype(tp);
+		    }
+		}
+		break;
+	    }
 
 	    /*
-	     * 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.
+	     * Just in case we have a corrupt database, do not waste time with
+	     * it.
 	     */
-	    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;
-		}
+	    if (++reccnt >= 3)
+		break;
 
-		_nc_db_close(capdbp);
-		free(save);
-	    }
+	    /*
+	     * Prepare for the second level.
+	     */
+	    key.data = have;
+	    key.size = used;
 	}
+
+	free(save);
+    } else			/* may be either filesystem or flat file */
+#endif
+    if (make_dir_filename(filename, limit, path, name)) {
+	code = _nc_read_file_entry(filename, tp);
+    }
+#if NCURSES_USE_TERMCAP
+    else if (code != TGETENT_YES) {
+	code = _nc_read_termcap_entry(name, tp);
+	_nc_SPRINTF(filename, _nc_SLIMIT(PATH_MAX)
+		    "%.*s", PATH_MAX - 1, _nc_get_source());
     }
 #endif
-    return result;
+    returnDB(code);
 }
-#endif /* USE_DATABASE */
+#endif /* NCURSES_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.
+ * 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)
+_nc_read_entry2(const char *const name, char *const filename, TERMTYPE2 *const tp)
 {
     int code = TGETENT_NO;
 
+    _nc_SPRINTF(filename, _nc_SLIMIT(PATH_MAX)
+		"%.*s", PATH_MAX - 1, name);
+
     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));
+	TR(TRACE_DATABASE, ("illegal or missing entry name '%s'", name));
     } else {
-#if USE_DATABASE
-	DBDIRS state = dbdTIC;
-	int offset = 0;
+#if NCURSES_USE_DATABASE
+	DBDIRS state;
+	int offset;
 	const char *path;
 
+	_nc_first_db(&state, &offset);
+	code = TGETENT_ERR;
 	while ((path = _nc_next_db(&state, &offset)) != 0) {
 	    code = _nc_read_tic_entry(filename, PATH_MAX, path, name, tp);
 	    if (code == TGETENT_YES) {
@@ -532,13 +741,29 @@ _nc_read_entry(const char *const name, char *const filename, TERMTYPE *const tp)
 		break;
 	    }
 	}
-#endif
-#if USE_TERMCAP
+#elif NCURSES_USE_TERMCAP
 	if (code != TGETENT_YES) {
 	    code = _nc_read_termcap_entry(name, tp);
-	    sprintf(filename, "%.*s", PATH_MAX - 1, _nc_get_source());
+	    _nc_SPRINTF(filename, _nc_SLIMIT(PATH_MAX)
+			"%.*s", PATH_MAX - 1, _nc_get_source());
 	}
 #endif
     }
     return code;
 }
+
+#if NCURSES_EXT_NUMBERS
+/*
+ * This entrypoint is used by tack.
+ */
+NCURSES_EXPORT(int)
+_nc_read_entry(const char *const name, char *const filename, TERMTYPE *const tp)
+{
+    TERMTYPE2 dummy;
+    int rc;
+    rc = _nc_read_entry2(name, filename, &dummy);
+    if (rc == TGETENT_YES)
+	_nc_export_termtype2(tp, &dummy);
+    return rc;
+}
+#endif