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-rw-r--r--source4/ntvfs/cifs/vfs_cifs.c49
1 files changed, 49 insertions, 0 deletions
diff --git a/source4/ntvfs/cifs/vfs_cifs.c b/source4/ntvfs/cifs/vfs_cifs.c
index 24dee76e46..91ca08d2de 100644
--- a/source4/ntvfs/cifs/vfs_cifs.c
+++ b/source4/ntvfs/cifs/vfs_cifs.c
@@ -99,10 +99,12 @@ NTSTATUS ntvfs_cifs_init(void);
#define CIFS_DOMAIN "cifs:domain"
#define CIFS_SHARE "cifs:share"
#define CIFS_USE_MACHINE_ACCT "cifs:use-machine-account"
+#define CIFS_USE_S4U2PROXY "cifs:use-s4u2proxy"
#define CIFS_MAP_GENERIC "cifs:map-generic"
#define CIFS_MAP_TRANS2 "cifs:map-trans2"
#define CIFS_USE_MACHINE_ACCT_DEFAULT false
+#define CIFS_USE_S4U2PROXY_DEFAULT false
#define CIFS_MAP_GENERIC_DEFAULT false
#define CIFS_MAP_TRANS2_DEFAULT true
@@ -150,6 +152,7 @@ static NTSTATUS cvfs_connect(struct ntvfs_module_context *ntvfs,
struct cli_credentials *credentials;
bool machine_account;
+ bool s4u2proxy;
const char* sharename;
switch (tcon->generic.level) {
@@ -187,6 +190,7 @@ static NTSTATUS cvfs_connect(struct ntvfs_module_context *ntvfs,
}
machine_account = share_bool_option(scfg, CIFS_USE_MACHINE_ACCT, CIFS_USE_MACHINE_ACCT_DEFAULT);
+ s4u2proxy = share_bool_option(scfg, CIFS_USE_S4U2PROXY, CIFS_USE_S4U2PROXY_DEFAULT);
p = talloc_zero(ntvfs, struct cvfs_private);
if (!p) {
@@ -226,6 +230,51 @@ static NTSTATUS cvfs_connect(struct ntvfs_module_context *ntvfs,
} else if (req->session_info->credentials) {
DEBUG(5, ("CIFS backend: Using delegated credentials\n"));
credentials = req->session_info->credentials;
+ } else if (s4u2proxy) {
+ struct ccache_container *ccc = NULL;
+ const char *err_str = NULL;
+ int ret;
+ char *impersonate_principal;
+ char *self_service;
+ char *target_service;
+
+ impersonate_principal = talloc_asprintf(req, "%s@%s",
+ req->session_info->info->account_name,
+ req->session_info->info->domain_name);
+
+ self_service = talloc_asprintf(req, "cifs/%s",
+ lpcfg_netbios_name(ntvfs->ctx->lp_ctx));
+
+ target_service = talloc_asprintf(req, "cifs/%s", host);
+
+ DEBUG(5, ("CIFS backend: Using S4U2Proxy credentials\n"));
+
+ credentials = cli_credentials_init(p);
+ cli_credentials_set_conf(credentials, ntvfs->ctx->lp_ctx);
+ if (domain) {
+ cli_credentials_set_domain(credentials, domain, CRED_SPECIFIED);
+ }
+ status = cli_credentials_set_machine_account(credentials, ntvfs->ctx->lp_ctx);
+ if (!NT_STATUS_IS_OK(status)) {
+ return status;
+ }
+ cli_credentials_invalidate_ccache(credentials, CRED_SPECIFIED);
+ cli_credentials_set_impersonate_principal(credentials,
+ impersonate_principal,
+ self_service);
+ cli_credentials_set_target_service(credentials, target_service);
+ ret = cli_credentials_get_ccache(credentials,
+ ntvfs->ctx->event_ctx,
+ ntvfs->ctx->lp_ctx,
+ &ccc,
+ &err_str);
+ if (ret != 0) {
+ status = NT_STATUS_CROSSREALM_DELEGATION_FAILURE;
+ DEBUG(1,("S4U2Proxy: cli_credentials_get_ccache() gave: ret[%d] str[%s] - %s\n",
+ ret, err_str, nt_errstr(status)));
+ return status;
+ }
+
} else {
DEBUG(1,("CIFS backend: NO delegated credentials found: You must supply server, user and password or the client must supply delegated credentials\n"));
return NT_STATUS_INTERNAL_ERROR;