X-Git-Url: https://ncurses.scripts.mit.edu/?p=ncurses.git;a=blobdiff_plain;f=ncurses%2Ftinfo%2Fdb_iterator.c;h=67467d4251a99552ce9b8889117361d44318826d;hp=3a4827df04627c8d710bd6e0177f62e98322fa88;hb=6c611e66965f5a8fb1a6696611f18441132852a2;hpb=43bb25186a3fa2cc24c08b3a1eedbb1e860c59a9

diff --git a/ncurses/tinfo/db_iterator.c b/ncurses/tinfo/db_iterator.c
index 3a4827df..67467d42 100644
--- a/ncurses/tinfo/db_iterator.c
+++ b/ncurses/tinfo/db_iterator.c
@@ -1,5 +1,5 @@
 /****************************************************************************
- * Copyright (c) 2006-2010,2011 Free Software Foundation, Inc.              *
+ * Copyright (c) 2006-2011,2012 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            *
@@ -43,7 +43,7 @@
 #include <hashed_db.h>
 #endif
 
-MODULE_ID("$Id: db_iterator.c,v 1.26 2012/01/07 20:09:36 juergen Exp $")
+MODULE_ID("$Id: db_iterator.c,v 1.34 2012/06/30 16:30:10 tom Exp $")
 
 #define HaveTicDirectory _nc_globals.have_tic_directory
 #define KeepTicDirectory _nc_globals.keep_tic_directory
@@ -55,13 +55,15 @@ MODULE_ID("$Id: db_iterator.c,v 1.26 2012/01/07 20:09:36 juergen Exp $")
 #define my_vars          _nc_globals.dbd_vars
 
 static void
-add_to_blob(const char *text)
+add_to_blob(const char *text, size_t limit)
 {
+    (void) limit;
+
     if (*text != '\0') {
 	char *last = my_blob + strlen(my_blob);
 	if (last != my_blob)
 	    *last++ = NCURSES_PATHSEP;
-	strcpy(last, text);
+	_nc_STRCPY(last, text, limit);
     }
 }
 
@@ -69,22 +71,16 @@ static bool
 check_existence(const char *name, struct stat *sb)
 {
     bool result = FALSE;
+
     if (stat(name, sb) == 0
-#ifndef __MINGW32__
-	&& sb->st_size
-#endif
-	) {
+	&& (S_ISDIR(sb->st_mode) || S_ISREG(sb->st_mode))) {
 	result = TRUE;
     }
 #if USE_HASHED_DB
     else if (strlen(name) < PATH_MAX - sizeof(DBM_SUFFIX)) {
 	char temp[PATH_MAX];
-	sprintf(temp, "%s%s", name, DBM_SUFFIX);
-	if (stat(temp, sb) == 0
-#ifndef __MINGW32__
-	    && sb->st_size
-#endif
-	    ) {
+	_nc_SPRINTF(temp, _nc_SLIMIT(sizeof(temp)) "%s%s", name, DBM_SUFFIX);
+	if (stat(temp, sb) == 0 && S_ISREG(sb->st_mode)) {
 	    result = TRUE;
 	}
     }
@@ -100,10 +96,13 @@ static bool
 update_getenv(const char *name, DBDIRS which)
 {
     bool result = FALSE;
-    char *value = getenv(name);
 
     if (which < dbdLAST) {
-	if (my_vars[which].name == 0 || strcmp(my_vars[which].name, name)) {
+	char *value;
+
+	if ((value = getenv(name)) == 0 || (value = strdup(value)) == 0) {
+	    ;
+	} else if (my_vars[which].name == 0 || strcmp(my_vars[which].name, name)) {
 	    FreeIfNeeded(my_vars[which].value);
 	    my_vars[which].name = name;
 	    my_vars[which].value = value;
@@ -116,6 +115,8 @@ update_getenv(const char *name, DBDIRS which)
 	    FreeIfNeeded(my_vars[which].value);
 	    my_vars[which].value = value;
 	    result = TRUE;
+	} else {
+	    free(value);
 	}
     }
     return result;
@@ -244,6 +245,7 @@ _nc_next_db(DBDIRS * state, int *offset)
 NCURSES_EXPORT(void)
 _nc_first_db(DBDIRS * state, int *offset)
 {
+    bool cache_has_expired = FALSE;
     *state = dbdTIC;
     *offset = 0;
 
@@ -252,12 +254,15 @@ _nc_first_db(DBDIRS * state, int *offset)
     /* build a blob containing all of the strings we will use for a lookup
      * table.
      */
-    if (my_blob == 0) {
+    if (my_blob == 0 || (cache_has_expired = cache_expired())) {
 	size_t blobsize = 0;
 	const char *values[dbdLAST];
 	struct stat *my_stat;
 	int j, k;
 
+	if (cache_has_expired)
+	    free_cache();
+
 	for (j = 0; j < dbdLAST; ++j)
 	    values[j] = 0;
 
@@ -309,7 +314,7 @@ _nc_first_db(DBDIRS * state, int *offset)
 	if (my_blob != 0) {
 	    *my_blob = '\0';
 	    for (j = 0; j < dbdLAST; ++j) {
-		add_to_blob(values[j]);
+		add_to_blob(values[j], blobsize);
 	    }
 
 	    /* Now, build an array which will be pointers to the distinct
@@ -391,9 +396,16 @@ _nc_first_db(DBDIRS * state, int *offset)
 void
 _nc_db_iterator_leaks(void)
 {
+    DBDIRS which;
+
     if (my_blob != 0)
 	FreeAndNull(my_blob);
     if (my_list != 0)
 	FreeAndNull(my_list);
+    for (which = 0; (int) which < dbdLAST; ++which) {
+	my_vars[which].name = 0;
+	FreeIfNeeded(my_vars[which].value);
+	my_vars[which].value = 0;
+    }
 }
 #endif