X-Git-Url: https://ncurses.scripts.mit.edu/?p=ncurses.git;a=blobdiff_plain;f=ncurses%2Ftinfo%2Fread_entry.c;h=3b020992d18a8d3571df7ad05f8db3ccc1ac3618;hp=e5c26b5fa6f2415c7fbebaed3c992027aafae1bd;hb=45291421bee33c79ffb4c8f0e1b67ca5cc262114;hpb=6be6b9d9202ba34ee545955dc66e355d9855353a

diff --git a/ncurses/tinfo/read_entry.c b/ncurses/tinfo/read_entry.c
index e5c26b5f..3b020992 100644
--- a/ncurses/tinfo/read_entry.c
+++ b/ncurses/tinfo/read_entry.c
@@ -1,5 +1,5 @@
 /****************************************************************************
- * Copyright (c) 1998-2013,2014 Free Software Foundation, Inc.              *
+ * Copyright (c) 1998-2017,2018 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            *
@@ -41,15 +41,89 @@
 
 #include <tic.h>
 
-MODULE_ID("$Id: read_entry.c,v 1.128 2014/06/14 22:30:41 tom Exp $")
+MODULE_ID("$Id: read_entry.c,v 1.150 2018/11/17 21:40:10 tom Exp $")
 
 #define TYPE_CALLOC(type,elts) typeCalloc(type, (unsigned)(elts))
 
 #define MyNumber(n) (short) LOW_MSB(n)
 
+#define SIZEOF_32BITS 4
+
 #if NCURSES_USE_DATABASE
-static void
-convert_shorts(char *buf, short *Numbers, int count)
+#if NCURSES_EXT_NUMBERS
+static size_t
+convert_16bits(char *buf, NCURSES_INT2 *Numbers, int count)
+{
+    int i;
+    size_t j;
+    size_t size = SIZEOF_SHORT;
+    unsigned char ch;
+    for (i = 0; i < count; i++) {
+	unsigned mask = 0xff;
+	Numbers[i] = 0;
+	for (j = 0; j < size; ++j) {
+	    ch = UChar(*buf++);
+	    Numbers[i] |= (ch << (8 * j));
+	    mask <<= 8;
+	}
+	if (ch & 0x80) {
+	    while (mask != 0) {
+		Numbers[i] |= (int) mask;
+		mask <<= 8;
+	    }
+	}
+	TR(TRACE_DATABASE, ("get Numbers[%d]=%d", i, Numbers[i]));
+    }
+    return size;
+}
+
+static size_t
+convert_32bits(char *buf, NCURSES_INT2 *Numbers, int count)
+{
+    int i;
+    size_t j;
+    size_t size = SIZEOF_INT2;
+    unsigned char ch;
+
+    assert(sizeof(NCURSES_INT2) == size);
+    for (i = 0; i < count; i++) {
+	Numbers[i] = 0;
+	for (j = 0; j < size; ++j) {
+	    ch = UChar(*buf++);
+	    Numbers[i] |= (ch << (8 * j));
+	}
+	/* "unsigned" and NCURSES_INT2 are the same size - no sign-extension */
+	TR(TRACE_DATABASE, ("get Numbers[%d]=%d", i, Numbers[i]));
+    }
+    return size;
+}
+#else
+static size_t
+convert_32bits(char *buf, NCURSES_INT2 *Numbers, int count)
+{
+    int i, j;
+    unsigned char ch;
+    for (i = 0; i < count; i++) {
+	int value = 0;
+	for (j = 0; j < SIZEOF_32BITS; ++j) {
+	    ch = UChar(*buf++);
+	    value |= (ch << (8 * j));
+	}
+	if (value == -1)
+	    Numbers[i] = ABSENT_NUMERIC;
+	else if (value == -2)
+	    Numbers[i] = CANCELLED_NUMERIC;
+	else if (value > MAX_OF_TYPE(NCURSES_INT2))
+	    Numbers[i] = MAX_OF_TYPE(NCURSES_INT2);
+	else
+	    Numbers[i] = (short) value;
+	TR(TRACE_DATABASE, ("get Numbers[%d]=%d", i, Numbers[i]));
+    }
+    return SIZEOF_SHORT;
+}
+
+static size_t
+convert_16bits(char *buf, NCURSES_INT2 *Numbers, int count)
 {
     int i;
     for (i = 0; i < count; i++) {
@@ -61,7 +135,9 @@ convert_shorts(char *buf, short *Numbers, int count)
 	    Numbers[i] = MyNumber(buf + 2 * i);
 	TR(TRACE_DATABASE, ("get Numbers[%d]=%d", i, Numbers[i]));
     }
+    return SIZEOF_SHORT;
 }
+#endif
 
 static void
 convert_strings(char *buf, char **Strings, int count, int size, char *table)
@@ -112,14 +188,17 @@ fake_read(char *src, int *offset, int limit, char *dst, unsigned want)
 #define Read(buf, count) fake_read(buffer, &offset, limit, (char *) buf, (unsigned) count)
 
 #define read_shorts(buf, count) \
-	(Read(buf, (count)*2) == (int) (count)*2)
+	(Read(buf, (count)*SIZEOF_SHORT) == (int) (count)*SIZEOF_SHORT)
+
+#define read_numbers(buf, count) \
+	(Read(buf, (count)*(unsigned)size_of_numbers) == (int) (count)*size_of_numbers)
 
 #define even_boundary(value) \
     if ((value) % 2 != 0) Read(buf, 1)
 #endif
 
 NCURSES_EXPORT(void)
-_nc_init_termtype(TERMTYPE *const tp)
+_nc_init_termtype(TERMTYPE2 *const tp)
 {
     unsigned i;
 
@@ -134,7 +213,7 @@ _nc_init_termtype(TERMTYPE *const tp)
     if (tp->Booleans == 0)
 	TYPE_MALLOC(NCURSES_SBOOL, BOOLCOUNT, tp->Booleans);
     if (tp->Numbers == 0)
-	TYPE_MALLOC(short, NUMCOUNT, tp->Numbers);
+	TYPE_MALLOC(NCURSES_INT2, NUMCOUNT, tp->Numbers);
     if (tp->Strings == 0)
 	TYPE_MALLOC(char *, STRCOUNT, tp->Strings);
 
@@ -169,7 +248,7 @@ valid_shorts(char *buffer, int limit)
  * Return TGETENT_YES if read, TGETENT_NO if not found or garbled.
  */
 NCURSES_EXPORT(int)
-_nc_read_termtype(TERMTYPE *ptr, char *buffer, int limit)
+_nc_read_termtype(TERMTYPE2 *ptr, char *buffer, int limit)
 {
     int offset = 0;
     int name_size, bool_count, num_count, str_count, str_size;
@@ -177,6 +256,14 @@ _nc_read_termtype(TERMTYPE *ptr, char *buffer, int limit)
     char buf[MAX_ENTRY_SIZE + 2];
     char *string_table;
     unsigned want, have;
+    bool need_ints;
+    size_t (*convert_numbers) (char *, NCURSES_INT2 *, int);
+    int size_of_numbers;
+    int max_entry_size = MAX_ENTRY_SIZE;
+
+    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));
 
@@ -185,14 +272,33 @@ _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);
+    }
+#if NCURSES_EXT_NUMBERS
+    if ((need_ints = (LOW_MSB(buf) == MAGIC2))) {
+	convert_numbers = convert_32bits;
+	size_of_numbers = SIZEOF_INT2;
+    } else {
+	max_entry_size = MAX_ENTRY_SIZE1;
+	convert_numbers = convert_16bits;
+	size_of_numbers = SIZEOF_SHORT;
     }
+#else
+    if ((need_ints = (LOW_MSB(buf) == MAGIC2))) {
+	convert_numbers = convert_32bits;
+	size_of_numbers = SIZEOF_32BITS;
+    } else {
+	convert_numbers = convert_16bits;
+	size_of_numbers = SIZEOF_INT2;
+    }
+#endif
 
-    name_size = MyNumber(buf + 2);
+    /* *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);
+    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)",
@@ -203,21 +309,14 @@ _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 = (unsigned) (str_size + name_size + 1);
-    if (str_size) {
-	/* try to allocate space for the string table */
-	if (str_count * 2 >= MAX_ENTRY_SIZE
-	    || (string_table = typeMalloc(char, want)) == 0) {
-	    return (TGETENT_NO);
-	}
-    } else {
-	str_count = 0;
-	if ((string_table = typeMalloc(char, want)) == 0) {
-	    return (TGETENT_NO);
-	}
+    /* try to allocate space for the string table */
+    if (str_count * SIZEOF_SHORT >= max_entry_size
+	|| (string_table = typeMalloc(char, want)) == 0) {
+	returnDB(TGETENT_NO);
     }
 
     /* grab the name (a null-terminated string) */
@@ -237,7 +336,7 @@ _nc_read_termtype(TERMTYPE *ptr, char *buffer, int limit)
     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);
     }
 
     /*
@@ -249,24 +348,24 @@ _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
-	|| !read_shorts(buf, num_count)) {
-	return (TGETENT_NO);
+    if (!(ptr->Numbers = TYPE_CALLOC(NCURSES_INT2, max(NUMCOUNT, num_count)))
+	|| !read_numbers(buf, num_count)) {
+	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);
+	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);
+	    returnDB(TGETENT_NO);
 	}
 	convert_strings(buf, ptr->Strings, str_count, str_size, string_table);
     }
@@ -285,20 +384,20 @@ _nc_read_termtype(TERMTYPE *ptr, char *buffer, int limit)
 	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_usage = 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 >= (MAX_ENTRY_SIZE / 2)
-	    || ext_str_size >= MAX_ENTRY_SIZE
-	    || ext_str_limit >= MAX_ENTRY_SIZE
+	if ((int) need >= (max_entry_size / 2)
+	    || ext_str_usage >= 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_usage < 0
 	    || ext_str_limit < 0) {
-	    return (TGETENT_NO);
+	    returnDB(TGETENT_NO);
 	}
 
 	ptr->num_Booleans = UShort(BOOLCOUNT + ext_bool_count);
@@ -306,19 +405,25 @@ _nc_read_termtype(TERMTYPE *ptr, char *buffer, int limit)
 	ptr->num_Strings = UShort(STRCOUNT + ext_str_count);
 
 	TYPE_REALLOC(NCURSES_SBOOL, ptr->num_Booleans, ptr->Booleans);
-	TYPE_REALLOC(short, ptr->num_Numbers, ptr->Numbers);
+	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,
-			    ext_str_size, ext_str_limit));
+	TR(TRACE_DATABASE, ("extended header: "
+			    "bool %d, "
+			    "number %d, "
+			    "string %d(%d:%d)",
+			    ext_bool_count,
+			    ext_num_count,
+			    ext_str_count,
+			    ext_str_usage,
+			    ext_str_limit));
 
 	TR(TRACE_DATABASE, ("READ %d extended-booleans @%d",
 			    ext_bool_count, offset));
 	if ((ptr->ext_Booleans = UShort(ext_bool_count)) != 0) {
 	    if (Read(ptr->Booleans + BOOLCOUNT, (unsigned)
 		     ext_bool_count) != ext_bool_count) {
-		return (TGETENT_NO);
+		returnDB(TGETENT_NO);
 	    }
 	}
 	even_boundary(ext_bool_count);
@@ -326,20 +431,20 @@ _nc_read_termtype(TERMTYPE *ptr, char *buffer, int limit)
 	TR(TRACE_DATABASE, ("READ %d extended-numbers @%d",
 			    ext_num_count, offset));
 	if ((ptr->ext_Numbers = UShort(ext_num_count)) != 0) {
-	    if (!read_shorts(buf, ext_num_count)) {
-		return (TGETENT_NO);
+	    if (!read_numbers(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)) {
-	    return (TGETENT_NO);
+	if ((ext_str_count + (int) need) >= (max_entry_size / 2)) {
+	    returnDB(TGETENT_NO);
 	}
 	if ((ext_str_count || need)
 	    && !read_shorts(buf, ext_str_count + (int) need)) {
-	    return (TGETENT_NO);
+	    returnDB(TGETENT_NO);
 	}
 
 	TR(TRACE_DATABASE, ("READ %d bytes of extended-strings @%d",
@@ -348,17 +453,20 @@ _nc_read_termtype(TERMTYPE *ptr, char *buffer, int limit)
 	if (ext_str_limit) {
 	    ptr->ext_str_table = typeMalloc(char, (size_t) ext_str_limit);
 	    if (ptr->ext_str_table == 0) {
-		return (TGETENT_NO);
+		returnDB(TGETENT_NO);
 	    }
 	    if (Read(ptr->ext_str_table, (unsigned) ext_str_limit) != ext_str_limit) {
-		return (TGETENT_NO);
+		returnDB(TGETENT_NO);
 	    }
 	    TR(TRACE_DATABASE, ("first extended-string is %s", _nc_visbuf(ptr->ext_str_table)));
 	}
 
 	if ((ptr->ext_Strings = UShort(ext_str_count)) != 0) {
+	    int check = (ext_bool_count + ext_num_count + ext_str_count);
+
 	    TR(TRACE_DATABASE,
-	       ("Before computing extended-string capabilities str_count=%d, ext_str_count=%d",
+	       ("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);
@@ -367,20 +475,30 @@ _nc_read_termtype(TERMTYPE *ptr, char *buffer, int limit)
 				    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]))
+		if (VALID_STRING(ptr->Strings[i + STRCOUNT])) {
 		    base += (int) (strlen(ptr->Strings[i + STRCOUNT]) + 1);
+		    ++check;
+		}
 		TR(TRACE_DATABASE, ("... to    [%d] %s",
 				    i + STRCOUNT,
 				    _nc_visbuf(ptr->Strings[i + STRCOUNT])));
 	    }
+	    TR(TRACE_DATABASE, ("Check table-size: %d/%d", check, ext_str_usage));
+#if 0
+	    /*
+	     * Phasing in a proper check will be done "later".
+	     */
+	    if (check != ext_str_usage)
+		returnDB(TGETENT_NO);
+#endif
 	}
 
 	if (need) {
-	    if (ext_str_count >= (MAX_ENTRY_SIZE / 2)) {
-		return (TGETENT_NO);
+	    if (ext_str_count >= (max_entry_size / 2)) {
+		returnDB(TGETENT_NO);
 	    }
 	    if ((ptr->ext_Names = TYPE_CALLOC(char *, need)) == 0) {
-		return (TGETENT_NO);
+		returnDB(TGETENT_NO);
 	    }
 	    TR(TRACE_DATABASE,
 	       ("ext_NAMES starting @%d in extended_strings, first = %s",
@@ -415,7 +533,7 @@ _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);
 }
 
 /*
@@ -427,25 +545,26 @@ _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 */
 {
     FILE *fp = 0;
     int code;
-    int limit;
-    char buffer[MAX_ENTRY_SIZE + 1];
 
     if (_nc_access(filename, R_OK) < 0
 	|| (fp = fopen(filename, "rb")) == 0) {
 	TR(TRACE_DATABASE, ("cannot open terminfo %s (errno=%d)", filename, errno));
 	code = TGETENT_NO;
     } else {
+	int limit;
+	char buffer[MAX_ENTRY_SIZE + 1];
+
 	if ((limit = (int) fread(buffer, sizeof(char), sizeof(buffer), fp))
 	    > 0) {
 
 	    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;
@@ -508,6 +627,106 @@ make_dir_filename(char *filename,
     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.
@@ -517,15 +736,30 @@ _nc_read_tic_entry(char *filename,
 		   unsigned limit,
 		   const char *const path,
 		   const char *name,
-		   TERMTYPE *const tp)
+		   TERMTYPE2 *const tp)
 {
     int code = TGETENT_NO;
-
 #if USE_HASHED_DB
     DB *capdbp;
+#endif
+    char buffer[MAX_ENTRY_SIZE + 1];
+    int used;
+
+    TR(TRACE_DATABASE,
+       (T_CALLED("_nc_read_tic_entry(file=%p, path=%s, name=%s)"),
+	filename, path, name));
 
-    if (make_db_filename(filename, limit, path)
-	&& (capdbp = _nc_db_open(filename, FALSE)) != 0) {
+    assert(TGETENT_YES == TRUE);	/* simplify call for _nc_name_match */
+
+    if ((used = decode_quickdump(buffer, path)) != 0
+	&& (code = _nc_read_termtype(tp, buffer, used)) == TGETENT_YES
+	&& (code = _nc_name_match(tp->term_names, name, "|")) == TGETENT_YES) {
+	TR(TRACE_DATABASE, ("loaded quick-dump for %s", name));
+	strcpy(filename, "$TERMINFO");	/* shorten name shown by infocmp */
+    } else
+#if USE_HASHED_DB
+	if (make_db_filename(filename, limit, path)
+	    && (capdbp = _nc_db_open(filename, FALSE)) != 0) {
 
 	DBT key, data;
 	int reccnt = 0;
@@ -551,15 +785,15 @@ _nc_read_tic_entry(char *filename,
 	 * (source/binary) by checking the lengths.
 	 */
 	while (_nc_db_get(capdbp, &key, &data) == 0) {
-	    int used = (int) data.size - 1;
 	    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);
+			_nc_free_termtype2(tp);
 		    }
 		}
 		break;
@@ -592,24 +826,23 @@ _nc_read_tic_entry(char *filename,
 		    "%.*s", PATH_MAX - 1, _nc_get_source());
     }
 #endif
-    return code;
+    returnDB(code);
 }
 #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;
 
+    if (name == 0)
+	return _nc_read_entry2("", filename, tp);
+
     _nc_SPRINTF(filename, _nc_SLIMIT(PATH_MAX)
 		"%.*s", PATH_MAX - 1, name);
 
@@ -626,8 +859,8 @@ _nc_read_entry(const char *const name, char *const filename, TERMTYPE *const tp)
 	const char *path;
 
 	_nc_first_db(&state, &offset);
+	code = TGETENT_ERR;
 	while ((path = _nc_next_db(&state, &offset)) != 0) {
-	    TR(TRACE_DATABASE, ("_nc_read_tic_entry path=%s, name=%s", path, name));
 	    code = _nc_read_tic_entry(filename, PATH_MAX, path, name, tp);
 	    if (code == TGETENT_YES) {
 		_nc_last_db();
@@ -644,3 +877,19 @@ _nc_read_entry(const char *const name, char *const filename, TERMTYPE *const tp)
     }
     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