1 files changed, 192 insertions, 120 deletions

diff --git a/contrib/ncurses/ncurses/tinfo/read_entry.c b/contrib/ncurses/ncurses/tinfo/read_entry.c
index e38b9cb..eeee0fa 100644
--- a/contrib/ncurses/ncurses/tinfo/read_entry.c
+++ b/contrib/ncurses/ncurses/tinfo/read_entry.c
@@ -1,5 +1,5 @@
 /****************************************************************************
- * Copyright (c) 1998-2010,2011 Free Software Foundation, Inc.              *
+ * Copyright (c) 1998-2012,2013 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            *
@@ -41,11 +41,11 @@
 
 #include <tic.h>
 
-MODULE_ID("$Id: read_entry.c,v 1.108 2011/02/26 15:36:06 tom Exp $")
+MODULE_ID("$Id: read_entry.c,v 1.126 2013/12/15 00:35:36 tom Exp $")
 
 #define TYPE_CALLOC(type,elts) typeCalloc(type, (unsigned)(elts))
 
-#if USE_DATABASE
+#if NCURSES_USE_DATABASE
 static void
 convert_shorts(char *buf, short *Numbers, int count)
 {
@@ -99,7 +99,7 @@ fake_read(char *src, int *offset, int limit, char *dst, unsigned want)
     if (have > 0) {
 	if ((int) want > have)
 	    want = (unsigned) have;
-	memcpy(dst, src + *offset, want);
+	memcpy(dst, src + *offset, (size_t) want);
 	*offset += (int) want;
     } else {
 	want = 0;
@@ -107,22 +107,56 @@ fake_read(char *src, int *offset, int limit, char *dst, unsigned want)
     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(TERMTYPE *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(short, 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
+/*
+ * 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 */
 {
     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;
 
@@ -157,7 +191,7 @@ _nc_read_termtype(TERMTYPE *ptr, char *buffer, int limit)
     want = (unsigned) (str_size + name_size + 1);
     if (str_size) {
 	/* try to allocate space for the string table */
-	if (str_count * 2 >= (int) sizeof(buf)
+	if (str_count * 2 >= MAX_ENTRY_SIZE
 	    || (string_table = typeMalloc(char, want)) == 0) {
 	    return (TGETENT_NO);
 	}
@@ -173,7 +207,7 @@ _nc_read_termtype(TERMTYPE *ptr, char *buffer, int limit)
     ptr->str_table = string_table;
     ptr->term_names = string_table;
     if ((have = (unsigned) Read(ptr->term_names, want)) != want) {
-	memset(ptr->term_names + have, 0, want - have);
+	memset(ptr->term_names + have, 0, (size_t) (want - have));
     }
     ptr->term_names[want] = '\0';
     string_table += (want + 1);
@@ -236,9 +270,9 @@ _nc_read_termtype(TERMTYPE *ptr, char *buffer, int limit)
 	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
@@ -250,9 +284,9 @@ _nc_read_termtype(TERMTYPE *ptr, char *buffer, int limit)
 	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(short, 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,
@@ -277,6 +311,8 @@ _nc_read_termtype(TERMTYPE *ptr, char *buffer, int limit)
 	}
 
 	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 || need)
 	    && !read_shorts(buf, ext_str_count + (int) need))
 	    return (TGETENT_NO);
@@ -313,7 +349,7 @@ _nc_read_termtype(TERMTYPE *ptr, char *buffer, int limit)
 	}
 
 	if (need) {
-	    if (ext_str_count >= (MAX_ENTRY_SIZE * 2))
+	    if (ext_str_count >= (MAX_ENTRY_SIZE / 2))
 		return (TGETENT_NO);
 	    if ((ptr->ext_Names = TYPE_CALLOC(char *, need)) == 0)
 		  return (TGETENT_NO);
@@ -326,17 +362,18 @@ _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
@@ -371,13 +408,13 @@ _nc_read_file_entry(const char *const filename, TERMTYPE *ptr)
 
     if (_nc_access(filename, R_OK) < 0
 	|| (fp = fopen(filename, "rb")) == 0) {
-	T(("cannot open terminfo %s (errno=%d)", filename, errno));
+	TR(TRACE_DATABASE, ("cannot open terminfo %s (errno=%d)", filename, errno));
 	code = TGETENT_NO;
     } else {
 	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);
 	    }
@@ -390,6 +427,58 @@ _nc_read_file_entry(const char *const filename, TERMTYPE *ptr)
     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;
+}
+
 /*
  * Build a terminfo pathname and try to read the data.  Returns TGETENT_YES on
  * success, TGETENT_NO on failure.
@@ -401,103 +490,82 @@ _nc_read_tic_entry(char *filename,
 		   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.
-     */
-    unsigned need = (unsigned) (LEAF_LEN + 3 + strlen(path) + strlen(name));
-    if (need <= limit)
-	(void) sprintf(filename, "%s/" LEAF_FMT "/%s", path, *name, name);
+    int code = TGETENT_NO;
 
-    if (_nc_is_dir_path(path))
-	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 test = lens + size;
-
-	if (test < limit) {
-	    if (size >= lens
-		&& !strcmp(path + size - lens, suffix))
-		(void) strcpy(filename, path);
-	    else
-		(void) sprintf(filename, "%s%s", path, suffix);
+    DB *capdbp;
+
+    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) {
+	    int used = (int) data.size - 1;
+	    char *have = (char *) data.data;
+
+	    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;
+    return code;
 }
-#endif /* USE_DATABASE */
+#endif /* NCURSES_USE_DATABASE */
 
 /*
  *	_nc_read_entry(char *name, char *filename, TERMTYPE *tp)
@@ -513,31 +581,35 @@ _nc_read_entry(const char *const name, char *const filename, TERMTYPE *const tp)
 {
     int code = TGETENT_NO;
 
-    sprintf(filename, "%.*s", PATH_MAX - 1, name);
+    _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);
 	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();
 		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
     }