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s3: libsmb: For SMB2 opens on a DFS share, convert to a DFS path if not already done.

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Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Noel Power <npower@samba.org>
This commit is contained in:
Jeremy Allison 2022-09-01 15:32:40 -07:00
parent 26b4a6951b
commit dd9cdfb3b1
1 changed files with 41 additions and 0 deletions
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41
source3/libsmb/cli_smb2_fnum.c
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@ -153,6 +153,42 @@ static uint8_t flags_to_smb2_oplock(uint32_t create_flags)
return SMB2_OPLOCK_LEVEL_NONE;
}
/***************************************************************
If we're on a DFS share, ensure we convert to a full DFS path
if this hasn't already been done.
***************************************************************/
static const char *smb2_dfs_share_path(TALLOC_CTX *ctx,
struct cli_state *cli,
const char *path)
{
bool is_dfs = smbXcli_conn_dfs_supported(cli->conn) &&
smbXcli_tcon_is_dfs_share(cli->smb2.tcon);
bool is_already_dfs_path = false;
if (!is_dfs) {
return path;
}
is_already_dfs_path = cli_dfs_is_already_full_path(cli, path);
if (is_already_dfs_path) {
return path;
}
if (path[0] == '\0') {
return talloc_asprintf(ctx,
"%s\\%s",
smbXcli_conn_remote_name(cli->conn),
cli->share);
}
while (*path == '\\') {
path++;
}
return talloc_asprintf(ctx,
"%s\\%s\\%s",
smbXcli_conn_remote_name(cli->conn),
cli->share,
path);
}
/***************************************************************
Small wrapper that allows SMB2 create to return a uint16_t fnum.
***************************************************************/
@ -254,6 +290,11 @@ struct tevent_req *cli_smb2_create_fnum_send(
}
}
fname = smb2_dfs_share_path(state, cli, fname);
if (tevent_req_nomem(fname, req)) {
return tevent_req_post(req, ev);
}
/* SMB2 is pickier about pathnames. Ensure it doesn't
start in a '\' */
if (*fname == '\\') {