lib/util/charset Add back setlocale(), but only when called from binaries

When called from a library, we don't want to call this, as we may
overwrite some of our calling program's context.

Andrew Bartlett

Autobuild-User: Andrew Bartlett <abartlet@samba.org>
Autobuild-Date: Fri Feb 18 09:29:35 CET 2011 on sn-devel-104

lib/util/charset/charset.h

@@ -223,6 +223,7 @@ smb_iconv_t smb_iconv_open_ex(TALLOC_CTX *mem_ctx, const char *tocode,
 			      const char *fromcode, bool native_iconv);
 
 void load_case_tables(void);
+void load_case_tables_library(void);
 bool smb_register_charset(const struct charset_functions *funcs_in);
 
 /*

lib/util/charset/codepoints.c

@@ -42,8 +42,10 @@ static void *lowcase_table;
 
 /*******************************************************************
 load the case handling tables
+
+This is the function that should be called from library code.
 ********************************************************************/
-void load_case_tables(void)
+void load_case_tables_library(void)
 {
 	TALLOC_CTX *mem_ctx;
 
@@ -64,6 +66,24 @@ void load_case_tables(void)
 	}
 }
 
+/*******************************************************************
+load the case handling tables
+
+This MUST only be called from main() in application code, never from a
+library.  We don't know if the calling program has already done
+setlocale() to another value, and can't tell if they have.
+********************************************************************/
+void load_case_tables(void)
+{
+	/* This is a useful global hook where we can ensure that the
+	 * locale is set from the environment.  This is needed so that
+	 * we can use LOCALE as a codepage */
+#ifdef HAVE_SETLOCALE
+	setlocale(LC_ALL, "");
+#endif
+	load_case_tables_library();
+}
+
 /**
  Convert a codepoint_t to upper case.
 **/
@@ -73,7 +93,7 @@ _PUBLIC_ codepoint_t toupper_m(codepoint_t val)
 		return toupper(val);
 	}
 	if (upcase_table == NULL) {
-		load_case_tables();
+		load_case_tables_library();
 	}
 	if (upcase_table == (void *)-1) {
 		return val;
@@ -93,7 +113,7 @@ _PUBLIC_ codepoint_t tolower_m(codepoint_t val)
 		return tolower(val);
 	}
 	if (lowcase_table == NULL) {
-		load_case_tables();
+		load_case_tables_library();
 	}
 	if (lowcase_table == (void *)-1) {
 		return val;

nsswitch/wins.c

@@ -48,7 +48,7 @@ NSS_STATUS _nss_wins_gethostbyname2_r(const char *name, int af, struct hostent *
 static void nss_wins_init(void)
 {
 	initialised = 1;
-	load_case_tables();
+	load_case_tables_library();
 	lp_set_cmdline("log level", "0");
 
 	TimeInit();

source3/lib/charcnv.c

@@ -51,7 +51,7 @@ static bool initialized;
 void lazy_initialize_conv(void)
 {
 	if (!initialized) {
-		load_case_tables();
+		load_case_tables_library();
 		init_iconv();
 		initialized = true;
 	}

source3/lib/netapi/netapi.c

@@ -68,7 +68,7 @@ NET_API_STATUS libnetapi_init(struct libnetapi_ctx **context)
 	frame = talloc_stackframe();
 
 	/* Case tables must be loaded before any string comparisons occour */
-	load_case_tables();
+	load_case_tables_library();
 
 	/* When libnetapi is invoked from an application, it does not
 	 * want to be swamped with level 10 debug messages, even if

source3/libsmb/libsmb_context.c

@@ -45,7 +45,7 @@ SMBC_module_init(void * punused)
     char *home = NULL;
     TALLOC_CTX *frame = talloc_stackframe();
 
-    load_case_tables();
+    load_case_tables_library();
 
     setup_logging("libsmbclient", DEBUG_STDOUT);
 

source3/pam_smbpass/pam_smb_acct.c

@@ -57,7 +57,7 @@ int pam_sm_acct_mgmt( pam_handle_t *pamh, int flags,
 	void (*oldsig_handler)(int);
 
 	/* Samba initialization. */
-	load_case_tables();
+	load_case_tables_library();
         lp_set_in_client(True);
 
 	ctrl = set_ctrl(pamh, flags, argc, argv );

source3/pam_smbpass/pam_smb_auth.c

@@ -80,7 +80,7 @@ int pam_sm_authenticate(pam_handle_t *pamh, int flags,
 	char *p = NULL;
 
 	/* Samba initialization. */
-	load_case_tables();
+	load_case_tables_library();
         lp_set_in_client(True);
 
 	ctrl = set_ctrl(pamh, flags, argc, argv);

source3/pam_smbpass/pam_smb_passwd.c

@@ -105,7 +105,7 @@ int pam_sm_chauthtok(pam_handle_t *pamh, int flags,
     char *pass_new;
 
     /* Samba initialization. */
-    load_case_tables();
+    load_case_tables_library();
     lp_set_in_client(True);
 
     ctrl = set_ctrl(pamh, flags, argc, argv);