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-rw-r--r--source3/Makefile.in1
-rw-r--r--source3/libsmb/proto.h9
-rw-r--r--source3/libsmb/reparse_symlink.c174
-rwxr-xr-xsource3/wscript_build1
4 files changed, 185 insertions, 0 deletions
diff --git a/source3/Makefile.in b/source3/Makefile.in
index 59f9032ea2..2763277bbc 100644
--- a/source3/Makefile.in
+++ b/source3/Makefile.in
@@ -590,6 +590,7 @@ LIBSMB_OBJ = libsmb/clientgen.o libsmb/cliconnect.o libsmb/clifile.o \
libsmb/clikrb5.o ../libcli/auth/krb5_wrap.o libsmb/clispnego.o \
../libcli/auth/spnego_parse.o \
../lib/util/asn1.o \
+ libsmb/reparse_symlink.o \
libsmb/clirap.o libsmb/clierror.o libsmb/climessage.o \
libsmb/clireadwrite.o libsmb/clilist.o libsmb/cliprint.o \
libsmb/clitrans.o libsmb/clisecdesc.o libsmb/clidgram.o \
diff --git a/source3/libsmb/proto.h b/source3/libsmb/proto.h
index f88a891d58..4d820d6bc6 100644
--- a/source3/libsmb/proto.h
+++ b/source3/libsmb/proto.h
@@ -851,4 +851,13 @@ bool client_is_signing_allowed(struct cli_state *cli);
bool client_is_signing_mandatory(struct cli_state *cli);
void cli_set_signing_negotiated(struct cli_state *cli);
+/* The following definitions come from libsmb/reparse_symlink.c */
+
+bool symlink_reparse_buffer_marshall(
+ const char *substitute, const char *printname, uint32_t flags,
+ TALLOC_CTX *mem_ctx, uint8_t **pdst, size_t *pdstlen);
+bool symlink_reparse_buffer_parse(
+ const uint8_t *src, size_t srclen, TALLOC_CTX *mem_ctx,
+ char **psubstitute_name, char **pprint_name, uint32_t *pflags);
+
#endif /* _LIBSMB_PROTO_H_ */
diff --git a/source3/libsmb/reparse_symlink.c b/source3/libsmb/reparse_symlink.c
new file mode 100644
index 0000000000..9c158ee3b5
--- /dev/null
+++ b/source3/libsmb/reparse_symlink.c
@@ -0,0 +1,174 @@
+/*
+ * Unix SMB/CIFS implementation.
+ *
+ * Implementation of
+ * http://msdn.microsoft.com/en-us/library/cc232006%28v=PROT.13%29.aspx
+ *
+ * Copyright (C) Volker Lendecke 2011
+ *
+ * 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"
+#include "include/client.h"
+#include "libsmb/proto.h"
+#include "include/ntioctl.h"
+
+bool symlink_reparse_buffer_marshall(
+ const char *substitute, const char *printname, uint32_t flags,
+ TALLOC_CTX *mem_ctx, uint8_t **pdst, size_t *pdstlen)
+{
+ uint8_t *dst = NULL;
+ size_t dst_len;
+ uint8_t *subst_utf16 = NULL;
+ uint8_t *print_utf16 = NULL;
+ size_t subst_len = 0;
+ size_t print_len = 0;
+
+ if (substitute == NULL) {
+ return false;
+ }
+ if (printname == NULL) {
+ printname = substitute;
+ }
+
+ if (!convert_string_talloc(talloc_tos(), CH_UNIX, CH_UTF16,
+ substitute, strlen(substitute),
+ &subst_utf16, &subst_len)) {
+ goto fail;
+ }
+ if (!convert_string_talloc(talloc_tos(), CH_UNIX, CH_UTF16,
+ printname, strlen(printname),
+ &print_utf16, &print_len)) {
+ goto fail;
+ }
+ dst_len = 20 + subst_len + print_len;
+ dst = talloc_array(mem_ctx, uint8_t, dst_len);
+ if (dst == NULL) {
+ goto fail;
+ }
+
+ SIVAL(dst, 0, IO_REPARSE_TAG_SYMLINK); /* ReparseTag */
+ SSVAL(dst, 4, 12 + subst_len + print_len); /* ReparseDataLength */
+ SSVAL(dst, 6, 0); /* Reserved */
+ SSVAL(dst, 8, 0); /* SubstituteNameOffset */
+ SSVAL(dst, 10, subst_len); /* SubstituteNameLength */
+ SSVAL(dst, 12, subst_len); /* PrintNameOffset */
+ SSVAL(dst, 14, print_len); /* PrintNameLength */
+ SIVAL(dst, 16, flags); /* Flags */
+
+ if ((subst_utf16 != NULL) && (subst_len != 0)) {
+ memcpy(dst + 20, subst_utf16, subst_len);
+ TALLOC_FREE(subst_utf16);
+ }
+
+ if ((print_utf16 != NULL) && (print_len != 0)) {
+ memcpy(dst + 20 + subst_len, print_utf16, print_len);
+ TALLOC_FREE(print_utf16);
+ }
+
+ *pdst = dst;
+ *pdstlen = dst_len;
+ return true;
+fail:
+ TALLOC_FREE(subst_utf16);
+ TALLOC_FREE(print_utf16);
+ return false;
+}
+
+bool symlink_reparse_buffer_parse(
+ const uint8_t *src, size_t srclen, TALLOC_CTX *mem_ctx,
+ char **psubstitute_name, char **pprint_name, uint32_t *pflags)
+{
+ uint16_t reparse_data_length;
+ uint16_t substitute_name_offset, substitute_name_length;
+ uint16_t print_name_offset, print_name_length;
+ uint32_t flags;
+ char *substitute_name = NULL;
+ char *print_name = NULL;
+
+ if (srclen < 20) {
+ DEBUG(10, ("srclen = %d, expected >= 20\n", (int)srclen));
+ return false;
+ }
+ if (IVAL(src, 0) != IO_REPARSE_TAG_SYMLINK) {
+ DEBUG(10, ("Got ReparseTag %8.8x, expected %8.8x\n",
+ IVAL(src, 0), IO_REPARSE_TAG_SYMLINK));
+ return false;
+ }
+
+ reparse_data_length = SVAL(src, 4);
+ substitute_name_offset = SVAL(src, 8);
+ substitute_name_length = SVAL(src, 10);
+ print_name_offset = SVAL(src, 12);
+ print_name_length = SVAL(src, 14);
+ flags = IVAL(src, 16);
+
+ if (reparse_data_length < 12) {
+ DEBUG(10, ("reparse_data_length = %d, expected >= 12\n",
+ (int)reparse_data_length));
+ return false;
+ }
+ if (trans_oob(srclen - 8, reparse_data_length, 0)) {
+ DEBUG(10, ("reparse_data_length (%d) too large for "
+ "src_len (%d)\n", (int)reparse_data_length,
+ (int)srclen));
+ return false;
+ }
+ if (trans_oob(reparse_data_length - 12, substitute_name_offset,
+ substitute_name_length)) {
+ DEBUG(10, ("substitute_name (%d/%d) does not fit in "
+ "reparse_data_length (%d)\n",
+ (int)substitute_name_offset,
+ (int)substitute_name_length,
+ (int)reparse_data_length - 12));
+ return false;
+ }
+ if (trans_oob(reparse_data_length - 12, print_name_offset,
+ print_name_length)) {
+ DEBUG(10, ("print_name (%d/%d) does not fit in "
+ "reparse_data_length (%d)\n",
+ (int)print_name_offset,
+ (int)print_name_length,
+ (int)reparse_data_length - 12));
+ return false;
+ }
+
+ if ((psubstitute_name != NULL) &&
+ !convert_string_talloc(mem_ctx, CH_UTF16, CH_UNIX,
+ src + 20 + substitute_name_offset,
+ substitute_name_length,
+ &substitute_name, NULL)) {
+ DEBUG(10, ("convert_string_talloc for substitute_name "
+ "failed\n"));
+ return false;
+ }
+ if ((pprint_name != NULL) &&
+ !convert_string_talloc(mem_ctx, CH_UTF16, CH_UNIX,
+ src + 20 + print_name_offset,
+ print_name_length,
+ &print_name, NULL)) {
+ DEBUG(10, ("convert_string_talloc for print_name "
+ "failed\n"));
+ TALLOC_FREE(substitute_name);
+ return false;
+ }
+ if (psubstitute_name != NULL) {
+ *psubstitute_name = substitute_name;
+ }
+ if (pprint_name != NULL) {
+ *pprint_name = print_name;
+ }
+ return true;
+}
diff --git a/source3/wscript_build b/source3/wscript_build
index 5563b3a4e9..d071053d5e 100755
--- a/source3/wscript_build
+++ b/source3/wscript_build
@@ -137,6 +137,7 @@ LIBSMB_SRC = '''libsmb/clientgen.c libsmb/cliconnect.c libsmb/clifile.c
libsmb/clioplock.c libsmb/clirap2.c
libsmb/smb_seal.c libsmb/async_smb.c libsmb/read_smb.c
libsmb/cli_np_tstream.c
+ libsmb/reparse_symlink.c
libsmb/smbsock_connect.c'''
LIBMSRPC_SRC = '''
generated by cgit (git 2.34.1) at 2024-12-13 10:06:14 +0000