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authorJeremy Allison <jra@samba.org>2007-04-18 00:34:10 +0000
committerGerald (Jerry) Carter <jerry@samba.org>2007-10-10 12:19:27 -0500
commit9812a7e32e515315302d3040a4145592640de7f7 (patch)
tree0b8ae70050962dce88efe8bb90e64a4f8d3450a4 /source3/libsmb
parent8a210af339c116182790d039b93bfd60ce69028d (diff)
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r22327: Finish the gss-spnego part of the seal code. Now
for testing.... Jeremy. (This used to be commit 1c1f5360b67792f14b50835a2c5a4d4ac68aca8f)
Diffstat (limited to 'source3/libsmb')
-rw-r--r--source3/libsmb/clifsinfo.c185
-rw-r--r--source3/libsmb/errormap.c4
2 files changed, 185 insertions, 4 deletions
diff --git a/source3/libsmb/clifsinfo.c b/source3/libsmb/clifsinfo.c
index 149af32574..be988a433f 100644
--- a/source3/libsmb/clifsinfo.c
+++ b/source3/libsmb/clifsinfo.c
@@ -2,6 +2,7 @@
Unix SMB/CIFS implementation.
FS info functions
Copyright (C) Stefan (metze) Metzmacher 2003
+ Copyright (C) Jeremy Allison 2007.
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
@@ -355,6 +356,22 @@ static NTSTATUS enc_blob_send_receive(struct cli_state *cli, DATA_BLOB *in, DATA
}
/******************************************************************************
+ Make a client state struct.
+******************************************************************************/
+
+static struct smb_trans_enc_state *make_cli_enc_state(enum smb_trans_enc_type smb_enc_type)
+{
+ struct smb_trans_enc_state *es = NULL;
+ es = SMB_MALLOC_P(struct smb_trans_enc_state);
+ if (!es) {
+ return NULL;
+ }
+ ZERO_STRUCTP(es);
+ es->smb_enc_type = smb_enc_type;
+ return es;
+}
+
+/******************************************************************************
Start a raw ntlmssp encryption.
******************************************************************************/
@@ -367,14 +384,11 @@ NTSTATUS cli_raw_ntlm_smb_encryption_start(struct cli_state *cli,
DATA_BLOB blob_out = data_blob(NULL, 0);
DATA_BLOB param_out = data_blob(NULL, 0);
NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
- struct smb_trans_enc_state *es = NULL;
+ struct smb_trans_enc_state *es = make_cli_enc_state(SMB_TRANS_ENC_NTLM);
- es = SMB_MALLOC_P(struct smb_trans_enc_state);
if (!es) {
return NT_STATUS_NO_MEMORY;
}
- ZERO_STRUCTP(es);
- es->smb_enc_type = SMB_TRANS_ENC_NTLM;
status = ntlmssp_client_start(&es->s.ntlmssp_state);
if (!NT_STATUS_IS_OK(status)) {
goto fail;
@@ -423,3 +437,166 @@ NTSTATUS cli_raw_ntlm_smb_encryption_start(struct cli_state *cli,
common_free_encryption_state(&es);
return status;
}
+
+#if defined(HAVE_GSSAPI) && defined(HAVE_KRB5)
+
+#ifndef SMB_GSS_REQUIRED_FLAGS
+#define SMB_GSS_REQUIRED_FLAGS (GSS_C_CONF_FLAG|GSS_C_INTEG_FLAG|GSS_C_MUTUAL_FLAG|GSS_C_REPLAY_FLAG|GSS_C_SEQUENCE_FLAG)
+#endif
+
+/******************************************************************************
+ Get client gss blob to send to a server.
+******************************************************************************/
+
+static NTSTATUS make_cli_gss_blob(struct smb_trans_enc_state *es,
+ const char *service,
+ const char *host,
+ NTSTATUS status_in,
+ DATA_BLOB spnego_blob_in,
+ DATA_BLOB *p_blob_out)
+{
+ const char *krb_mechs[] = {OID_KERBEROS5_OLD, OID_KERBEROS5, NULL};
+ OM_uint32 ret;
+ OM_uint32 min;
+ gss_name_t srv_name;
+ gss_buffer_desc input_name;
+ gss_buffer_desc *p_tok_in;
+ gss_buffer_desc tok_out, tok_in;
+ DATA_BLOB blob_out = data_blob(NULL, 0);
+ DATA_BLOB blob_in = data_blob(NULL, 0);
+ char *host_princ_s = NULL;
+ OM_uint32 ret_flags = 0;
+ NTSTATUS status = NT_STATUS_OK;
+
+ memset(&tok_out, '\0', sizeof(tok_out));
+
+ /* Get a ticket for the service@host */
+ asprintf(&host_princ_s, "%s@%s", service, host);
+ if (host_princ_s == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ input_name.value = host_princ_s;
+ input_name.length = strlen(host_princ_s) + 1;
+
+ ret = gss_import_name(&min,
+ &input_name,
+ GSS_C_NT_HOSTBASED_SERVICE,
+ &srv_name);
+
+ if (ret != GSS_S_COMPLETE) {
+ SAFE_FREE(host_princ_s);
+ return map_nt_error_from_gss(ret, min);
+ }
+
+ if (spnego_blob_in.length == 0) {
+ p_tok_in = GSS_C_NO_BUFFER;
+ } else {
+ /* Remove the SPNEGO wrapper */
+ if (!spnego_parse_auth_response(spnego_blob_in, status_in, OID_KERBEROS5, &blob_in)) {
+ status = NT_STATUS_UNSUCCESSFUL;
+ goto fail;
+ }
+ tok_in.value = blob_in.data;
+ tok_in.length = blob_in.length;
+ p_tok_in = &tok_in;
+ }
+
+ ret = gss_init_sec_context(&min,
+ GSS_C_NO_CREDENTIAL, /* Use our default cred. */
+ &es->s.gss_state->gss_ctx,
+ srv_name,
+ GSS_C_NO_OID, /* default OID. */
+ GSS_C_MUTUAL_FLAG | GSS_C_REPLAY_FLAG | GSS_C_SEQUENCE_FLAG,
+ GSS_C_INDEFINITE, /* requested ticket lifetime. */
+ NULL, /* no channel bindings */
+ p_tok_in,
+ NULL, /* ignore mech type */
+ &tok_out,
+ &ret_flags,
+ NULL); /* ignore time_rec */
+
+ status = map_nt_error_from_gss(ret, min);
+ if (!NT_STATUS_IS_OK(status) && !NT_STATUS_EQUAL(status,NT_STATUS_MORE_PROCESSING_REQUIRED)) {
+ goto fail;
+ }
+
+ if ((ret_flags & SMB_GSS_REQUIRED_FLAGS) != SMB_GSS_REQUIRED_FLAGS) {
+ status = NT_STATUS_ACCESS_DENIED;
+ }
+
+ blob_out = data_blob(tok_out.value, tok_out.length);
+
+ /* Wrap in an SPNEGO wrapper */
+ *p_blob_out = gen_negTokenTarg(krb_mechs, blob_out);
+
+ fail:
+
+ data_blob_free(&blob_out);
+ data_blob_free(&blob_in);
+ SAFE_FREE(host_princ_s);
+ gss_release_name(&min, &srv_name);
+ if (tok_out.value) {
+ gss_release_buffer(&min, &tok_out);
+ }
+ return status;
+}
+
+/******************************************************************************
+ Start a SPNEGO gssapi encryption context.
+******************************************************************************/
+
+NTSTATUS cli_gss_smb_encryption_start(struct cli_state *cli)
+{
+ DATA_BLOB blob_recv = data_blob(NULL, 0);
+ DATA_BLOB blob_send = data_blob(NULL, 0);
+ DATA_BLOB param_out = data_blob(NULL, 0);
+ NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
+ fstring fqdn;
+ const char *servicename;
+ struct smb_trans_enc_state *es = make_cli_enc_state(SMB_TRANS_ENC_GSS);
+
+ if (!es) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ name_to_fqdn(fqdn, cli->desthost);
+ strlower_m(fqdn);
+
+ servicename = "cifs";
+ status = make_cli_gss_blob(es, servicename, fqdn, NT_STATUS_OK, blob_recv, &blob_send);
+ if (!NT_STATUS_EQUAL(status,NT_STATUS_MORE_PROCESSING_REQUIRED)) {
+ servicename = "host";
+ status = make_cli_gss_blob(es, servicename, fqdn, NT_STATUS_OK, blob_recv, &blob_send);
+ if (!NT_STATUS_EQUAL(status,NT_STATUS_MORE_PROCESSING_REQUIRED)) {
+ goto fail;
+ }
+ }
+
+ do {
+ data_blob_free(&blob_recv);
+ status = enc_blob_send_receive(cli, &blob_send, &blob_recv, &param_out);
+ if (param_out.length == 2) {
+ es->enc_ctx_num = SVAL(param_out.data, 0);
+ }
+ data_blob_free(&blob_send);
+ status = make_cli_gss_blob(es, servicename, fqdn, status, blob_recv, &blob_send);
+ } while (NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED));
+ data_blob_free(&blob_recv);
+
+ if (NT_STATUS_IS_OK(status)) {
+ /* Replace the old state, if any. */
+ if (cli->trans_enc_state) {
+ common_free_encryption_state(&cli->trans_enc_state);
+ }
+ cli->trans_enc_state = es;
+ cli->trans_enc_state->enc_on = True;
+ es = NULL;
+ }
+
+ fail:
+
+ common_free_encryption_state(&es);
+ return status;
+}
+#endif
diff --git a/source3/libsmb/errormap.c b/source3/libsmb/errormap.c
index a78b0af81a..97bef001fb 100644
--- a/source3/libsmb/errormap.c
+++ b/source3/libsmb/errormap.c
@@ -1652,6 +1652,10 @@ NTSTATUS map_nt_error_from_gss(uint32 gss_maj, uint32 minor)
return NT_STATUS_OK;
}
+ if (gss_maj == GSS_S_CONTINUE_NEEDED) {
+ return NT_STATUS_MORE_PROCESSING_REQUIRED;
+ }
+
if (gss_maj == GSS_S_FAILURE) {
return map_nt_error_from_unix((int)minor);
}