From ef2e26c91b80556af033d3335e55f5dfa6fff31d Mon Sep 17 00:00:00 2001
From: Andrew Tridgell <tridge@samba.org>
Date: Wed, 13 Aug 2003 01:53:07 +0000
Subject: first public release of samba4 code

(This used to be commit b0510b5428b3461aeb9bbe3cc95f62fc73e2b97f)
---
 source4/libcli/raw/raweas.c | 147 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 147 insertions(+)
 create mode 100644 source4/libcli/raw/raweas.c

(limited to 'source4/libcli/raw/raweas.c')

diff --git a/source4/libcli/raw/raweas.c b/source4/libcli/raw/raweas.c
new file mode 100644
index 0000000000..ce0368c304
--- /dev/null
+++ b/source4/libcli/raw/raweas.c
@@ -0,0 +1,147 @@
+/* 
+   Unix SMB/CIFS implementation.
+   parsing of EA (extended attribute) lists
+   Copyright (C) Andrew Tridgell 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 2 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, write to the Free Software
+   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#include "includes.h"
+
+/*
+  work out how many bytes on the wire a ea list will consume. 
+  This assumes the names are strict ascii, which should be a
+  reasonable assumption
+*/
+uint_t ea_list_size(uint_t num_eas, struct ea_struct *eas)
+{
+	uint_t total = 4;
+	int i;
+	for (i=0;i<num_eas;i++) {
+		total += 4 + strlen(eas[i].name.s)+1 + eas[i].value.length;
+	}
+	return total;
+}
+
+/*
+  put a ea_list into a pre-allocated buffer - buffer must be at least
+  of size ea_list_size()
+*/
+void ea_put_list(char *data, uint_t num_eas, struct ea_struct *eas)
+{
+	int i;
+	uint32 ea_size;
+
+	ea_size = ea_list_size(num_eas, eas);
+
+	SIVAL(data, 0, ea_size);
+	data += 4;
+
+	for (i=0;i<num_eas;i++) {
+		uint_t nlen = strlen(eas[i].name.s);
+		SCVAL(data, 0, eas[i].flags);
+		SCVAL(data, 1, nlen);
+		SSVAL(data, 2, eas[i].value.length);
+		memcpy(data+4, eas[i].name.s, nlen+1);
+		memcpy(data+4+nlen+1, eas[i].value.data, eas[i].value.length);
+		data += 4+nlen+1+eas[i].value.length;
+	}
+}
+
+
+/*
+  pull a ea_struct from a buffer. Return the number of bytes consumed
+*/
+uint_t ea_pull_struct(const DATA_BLOB *blob, 
+		      TALLOC_CTX *mem_ctx,
+		      struct ea_struct *ea)
+{
+	uint8 nlen;
+	uint16 vlen;
+
+	if (blob->length < 6) {
+		return 0;
+	}
+
+	ea->flags = CVAL(blob->data, 0);
+	nlen = CVAL(blob->data, 1);
+	vlen = SVAL(blob->data, 2);
+
+	if (nlen+1+vlen > blob->length-4) {
+		return 0;
+	}
+
+	ea->name.s = talloc_strndup(mem_ctx, blob->data+4, nlen);
+	ea->name.private_length = nlen;
+	ea->value = data_blob_talloc(mem_ctx, NULL, vlen+1);
+	if (!ea->value.data) return 0;
+	if (vlen) {
+		memcpy(ea->value.data, blob->data+4+nlen+1, vlen);
+	}
+	ea->value.data[vlen] = 0;
+	ea->value.length--;
+
+	return 4 + nlen+1 + vlen;
+}
+
+
+/*
+  pull a ea_list from a buffer
+*/
+NTSTATUS ea_pull_list(const DATA_BLOB *blob, 
+		      TALLOC_CTX *mem_ctx,
+		      uint_t *num_eas, struct ea_struct **eas)
+{
+	int n;
+	uint32 ea_size, ofs;
+
+	if (blob->length < 4) {
+		return NT_STATUS_INFO_LENGTH_MISMATCH;
+	}
+
+	ea_size = IVAL(blob->data, 0);
+	if (ea_size > blob->length) {
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+	
+	ofs = 4;	
+	n = 0;
+	*num_eas = 0;
+	*eas = NULL;
+
+	while (ofs < ea_size) {
+		uint_t len;
+		DATA_BLOB blob2;
+
+		blob2.data = blob->data + ofs;
+		blob2.length = ea_size - ofs;
+
+		*eas = talloc_realloc(mem_ctx, *eas, sizeof(**eas) * (n+1));
+		if (! *eas) return NT_STATUS_NO_MEMORY;
+
+		len = ea_pull_struct(&blob2, mem_ctx, &(*eas)[n]);
+		if (len == 0) {
+			return NT_STATUS_INVALID_PARAMETER;
+		}
+
+		ofs += len;
+		n++;
+	}
+
+	*num_eas = n;
+
+	return NT_STATUS_OK;
+}
+
-- 
cgit