s3-string: moved fstring functions into their own file

Pair-Programmed-With: Andrew Bartlett <abartlet@samba.org>

1 files changed, 131 insertions, 0 deletions

diff --git a/source3/lib/fstring.c b/source3/lib/fstring.c
new file mode 100644
index 0000000000..cd5317c230
--- /dev/null
+++ b/source3/lib/fstring.c
@@ -0,0 +1,131 @@
+/*
+   Unix SMB/CIFS implementation.
+
+   fixed string functions
+
+   Copyright (C) Igor Vergeichik <iverg@mail.ru> 2001
+   Copyright (C) Andrew Tridgell 2001
+   Copyright (C) Simo Sorce 2001
+   Copyright (C) Martin Pool 2003
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+*/
+
+#include "includes.h"
+
+size_t push_ascii_fstring(void *dest, const char *src)
+{
+	return push_ascii(dest, src, sizeof(fstring), STR_TERMINATE);
+}
+
+/********************************************************************
+ Push an nstring - ensure null terminated. Written by
+ moriyama@miraclelinux.com (MORIYAMA Masayuki).
+********************************************************************/
+
+size_t push_ascii_nstring(void *dest, const char *src)
+{
+	size_t i, buffer_len, dest_len;
+	smb_ucs2_t *buffer;
+
+	conv_silent = True;
+	if (!push_ucs2_talloc(talloc_tos(), &buffer, src, &buffer_len)) {
+		smb_panic("failed to create UCS2 buffer");
+	}
+
+	/* We're using buffer_len below to count ucs2 characters, not bytes. */
+	buffer_len /= sizeof(smb_ucs2_t);
+
+	dest_len = 0;
+	for (i = 0; buffer[i] != 0 && (i < buffer_len); i++) {
+		unsigned char mb[10];
+		/* Convert one smb_ucs2_t character at a time. */
+		size_t mb_len = convert_string(CH_UTF16LE, CH_DOS, buffer+i, sizeof(smb_ucs2_t), mb, sizeof(mb));
+		if ((mb_len != (size_t)-1) && (dest_len + mb_len <= MAX_NETBIOSNAME_LEN - 1)) {
+			memcpy((char *)dest + dest_len, mb, mb_len);
+			dest_len += mb_len;
+		} else {
+			errno = E2BIG;
+			break;
+		}
+	}
+	((char *)dest)[dest_len] = '\0';
+
+	conv_silent = False;
+	TALLOC_FREE(buffer);
+	return dest_len;
+}
+
+size_t pull_ascii_fstring(char *dest, const void *src)
+{
+	return pull_ascii(dest, src, sizeof(fstring), -1, STR_TERMINATE);
+}
+
+/* When pulling an nstring it can expand into a larger size (dos cp -> utf8). Cope with this. */
+
+size_t pull_ascii_nstring(char *dest, size_t dest_len, const void *src)
+{
+	return pull_ascii(dest, src, dest_len, sizeof(nstring)-1, STR_TERMINATE);
+}
+
+/**
+ Copy a string from a char* src to a UTF-8 destination.
+ Return the number of bytes occupied by the string in the destination
+ Flags can have:
+  STR_TERMINATE means include the null termination
+  STR_UPPER     means uppercase in the destination
+ dest_len is the maximum length allowed in the destination. If dest_len
+ is -1 then no maxiumum is used.
+**/
+
+static size_t push_utf8(void *dest, const char *src, size_t dest_len, int flags)
+{
+	size_t src_len = 0;
+	size_t ret;
+	char *tmpbuf = NULL;
+
+	if (dest_len == (size_t)-1) {
+		/* No longer allow dest_len of -1. */
+		smb_panic("push_utf8 - invalid dest_len of -1");
+	}
+
+	if (flags & STR_UPPER) {
+		tmpbuf = strupper_talloc(talloc_tos(), src);
+		if (!tmpbuf) {
+			return (size_t)-1;
+		}
+		src = tmpbuf;
+		src_len = strlen(src);
+	}
+
+	src_len = strlen(src);
+	if (flags & STR_TERMINATE) {
+		src_len++;
+	}
+
+	ret = convert_string(CH_UNIX, CH_UTF8, src, src_len, dest, dest_len);
+	TALLOC_FREE(tmpbuf);
+	return ret;
+}
+
+size_t push_utf8_fstring(void *dest, const char *src)
+{
+	return push_utf8(dest, src, sizeof(fstring), STR_TERMINATE);
+}
+
+size_t pull_ucs2_fstring(char *dest, const void *src)
+{
+	return pull_ucs2(NULL, dest, src, sizeof(fstring), -1, STR_TERMINATE);
+}