s3: libsmb: Add the capability to find a @GMT- path in an SMB2 create and transform...

BUG: https://bugzilla.samba.org/show_bug.cgi?id=12166

Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Uri Simchoni <uri@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Mon Aug 22 22:59:22 CEST 2016 on sn-devel-144

diff --git a/source3/libsmb/cli_smb2_fnum.c b/source3/libsmb/cli_smb2_fnum.c
index 70fa798ed65c26f298e32a6f410869eb2aff5e1c..ac7209014626ecb38833e3b9bfd5df03d84bbf0c 100644 (file)
--- a/source3/libsmb/cli_smb2_fnum.c
+++ b/source3/libsmb/cli_smb2_fnum.c
@@ -178,6 +178,10 @@ struct tevent_req *cli_smb2_create_fnum_send(TALLOC_CTX *mem_ctx,
        struct tevent_req *req, *subreq;
        struct cli_smb2_create_fnum_state *state;
        size_t fname_len = 0;
+       const char *startp = NULL;
+       const char *endp = NULL;
+       time_t tstamp = (time_t)0;
+       struct smb2_create_blobs *cblobs = NULL;
 
        req = tevent_req_create(mem_ctx, &state,
                                struct cli_smb2_create_fnum_state);
@@ -195,14 +199,51 @@ struct tevent_req *cli_smb2_create_fnum_send(TALLOC_CTX *mem_ctx,
                create_options |= FILE_OPEN_FOR_BACKUP_INTENT;
        }
 
+       /* Check for @GMT- paths. Remove the @GMT and turn into TWrp if so. */
+       fname_len = strlen(fname);
+       if (clistr_is_previous_version_path(fname, &startp, &endp, &tstamp)) {
+               size_t len_before_gmt = startp - fname;
+               size_t len_after_gmt = fname + fname_len - endp;
+               DATA_BLOB twrp_blob;
+               NTTIME ntt;
+               NTSTATUS status;
+
+               char *new_fname = talloc_array(state, char,
+                               len_before_gmt + len_after_gmt + 1);
+
+               if (tevent_req_nomem(new_fname, req)) {
+                       return tevent_req_post(req, ev);
+               }
+
+               memcpy(new_fname, fname, len_before_gmt);
+               memcpy(new_fname + len_before_gmt, endp, len_after_gmt + 1);
+               fname = new_fname;
+               fname_len = len_before_gmt + len_after_gmt;
+
+               unix_to_nt_time(&ntt, tstamp);
+               twrp_blob = data_blob_const((const void *)&ntt, 8);
+
+               cblobs = talloc_zero(state, struct smb2_create_blobs);
+               if (tevent_req_nomem(cblobs, req)) {
+                       return tevent_req_post(req, ev);
+               }
+
+               status = smb2_create_blob_add(state, cblobs,
+                               SMB2_CREATE_TAG_TWRP, twrp_blob);
+               if (!NT_STATUS_IS_OK(status)) {
+                       tevent_req_nterror(req, status);
+                       return tevent_req_post(req, ev);
+               }
+       }
+
        /* SMB2 is pickier about pathnames. Ensure it doesn't
           start in a '\' */
        if (*fname == '\\') {
                fname++;
+               fname_len--;
        }
 
        /* Or end in a '\' */
-       fname_len = strlen(fname);
        if (fname_len > 0 && fname[fname_len-1] == '\\') {
                char *new_fname = talloc_strdup(state, fname);
                if (tevent_req_nomem(new_fname, req)) {
@@ -225,7 +266,7 @@ struct tevent_req *cli_smb2_create_fnum_send(TALLOC_CTX *mem_ctx,
                                     share_access,
                                     create_disposition,
                                     create_options,
-                                    NULL);
+                                    cblobs);
        if (tevent_req_nomem(subreq, req)) {
                return tevent_req_post(req, ev);
        }