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-rw-r--r--source3/lib/util.c90
1 files changed, 90 insertions, 0 deletions
diff --git a/source3/lib/util.c b/source3/lib/util.c
index bc3eaa8d5e..11f3660df8 100644
--- a/source3/lib/util.c
+++ b/source3/lib/util.c
@@ -3273,3 +3273,93 @@ void *talloc_zeronull(const void *context, size_t size, const char *name)
return talloc_named_const(context, size, name);
}
#endif
+
+/* Split a path name into filename and stream name components. Canonicalise
+ * such that an implicit $DATA token is always explicit.
+ *
+ * The "specification" of this function can be found in the
+ * run_local_stream_name() function in torture.c, I've tried those
+ * combinations against a W2k3 server.
+ */
+
+NTSTATUS split_ntfs_stream_name(TALLOC_CTX *mem_ctx, const char *fname,
+ char **pbase, char **pstream)
+{
+ char *base = NULL;
+ char *stream = NULL;
+ char *sname; /* stream name */
+ const char *stype; /* stream type */
+
+ DEBUG(10, ("split_ntfs_stream_name called for [%s]\n", fname));
+
+ sname = strchr_m(fname, ':');
+
+ if (lp_posix_pathnames() || (sname == NULL)) {
+ if (pbase != NULL) {
+ base = talloc_strdup(mem_ctx, fname);
+ NT_STATUS_HAVE_NO_MEMORY(base);
+ }
+ goto done;
+ }
+
+ if (pbase != NULL) {
+ base = talloc_strndup(mem_ctx, fname, PTR_DIFF(sname, fname));
+ NT_STATUS_HAVE_NO_MEMORY(base);
+ }
+
+ sname += 1;
+
+ stype = strchr_m(sname, ':');
+
+ if (stype == NULL) {
+ sname = talloc_strdup(mem_ctx, sname);
+ stype = "$DATA";
+ }
+ else {
+ if (StrCaseCmp(stype, ":$DATA") != 0) {
+ /*
+ * If there is an explicit stream type, so far we only
+ * allow $DATA. Is there anything else allowed? -- vl
+ */
+ DEBUG(10, ("[%s] is an invalid stream type\n", stype));
+ TALLOC_FREE(base);
+ return NT_STATUS_OBJECT_NAME_INVALID;
+ }
+ sname = talloc_strndup(mem_ctx, sname, PTR_DIFF(stype, sname));
+ stype += 1;
+ }
+
+ if (sname == NULL) {
+ TALLOC_FREE(base);
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ if (sname[0] == '\0') {
+ /*
+ * no stream name, so no stream
+ */
+ goto done;
+ }
+
+ if (pstream != NULL) {
+ stream = talloc_asprintf(mem_ctx, "%s:%s", sname, stype);
+ if (stream == NULL) {
+ TALLOC_FREE(sname);
+ TALLOC_FREE(base);
+ return NT_STATUS_NO_MEMORY;
+ }
+ /*
+ * upper-case the type field
+ */
+ strupper_m(strchr_m(stream, ':')+1);
+ }
+
+ done:
+ if (pbase != NULL) {
+ *pbase = base;
+ }
+ if (pstream != NULL) {
+ *pstream = stream;
+ }
+ return NT_STATUS_OK;
+}