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-rw-r--r--source3/libsmb/cliconnect.c254
1 files changed, 201 insertions, 53 deletions
diff --git a/source3/libsmb/cliconnect.c b/source3/libsmb/cliconnect.c
index bdbc8f1e9d..0fc532dd0f 100644
--- a/source3/libsmb/cliconnect.c
+++ b/source3/libsmb/cliconnect.c
@@ -63,86 +63,234 @@ static void cli_set_session_key (struct cli_state *cli, const DATA_BLOB session_
Do an old lanman2 style session setup.
****************************************************************************/
-static NTSTATUS cli_session_setup_lanman2(struct cli_state *cli,
- const char *user,
- const char *pass, size_t passlen,
- const char *workgroup)
+struct cli_session_setup_lanman2_state {
+ struct cli_state *cli;
+ uint16_t vwv[10];
+ const char *user;
+};
+
+static void cli_session_setup_lanman2_done(struct tevent_req *subreq);
+
+static struct tevent_req *cli_session_setup_lanman2_send(
+ TALLOC_CTX *mem_ctx, struct tevent_context *ev,
+ struct cli_state *cli, const char *user,
+ const char *pass, size_t passlen,
+ const char *workgroup)
{
+ struct tevent_req *req, *subreq;
+ struct cli_session_setup_lanman2_state *state;
DATA_BLOB lm_response = data_blob_null;
- NTSTATUS status;
- fstring pword;
- char *p;
+ uint16_t *vwv;
+ uint8_t *bytes;
+ char *tmp;
- if (passlen > sizeof(pword)-1) {
- return NT_STATUS_INVALID_PARAMETER;
+ req = tevent_req_create(mem_ctx, &state,
+ struct cli_session_setup_lanman2_state);
+ if (req == NULL) {
+ return NULL;
}
+ state->cli = cli;
+ state->user = user;
+ vwv = state->vwv;
- /* LANMAN servers predate NT status codes and Unicode and ignore those
- smb flags so we must disable the corresponding default capabilities
- that would otherwise cause the Unicode and NT Status flags to be
- set (and even returned by the server) */
+ /*
+ * LANMAN servers predate NT status codes and Unicode and
+ * ignore those smb flags so we must disable the corresponding
+ * default capabilities that would otherwise cause the Unicode
+ * and NT Status flags to be set (and even returned by the
+ * server)
+ */
cli->capabilities &= ~(CAP_UNICODE | CAP_STATUS32);
- /* if in share level security then don't send a password now */
- if (!(cli->sec_mode & NEGOTIATE_SECURITY_USER_LEVEL))
+ /*
+ * if in share level security then don't send a password now
+ */
+ if (!(cli->sec_mode & NEGOTIATE_SECURITY_USER_LEVEL)) {
passlen = 0;
+ }
- if (passlen > 0 && (cli->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) && passlen != 24) {
- /* Encrypted mode needed, and non encrypted password supplied. */
+ if (passlen > 0
+ && (cli->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE)
+ && passlen != 24) {
+ /*
+ * Encrypted mode needed, and non encrypted password
+ * supplied.
+ */
lm_response = data_blob(NULL, 24);
- if (!SMBencrypt(pass, cli->secblob.data,(uchar *)lm_response.data)) {
- DEBUG(1, ("Password is > 14 chars in length, and is therefore incompatible with Lanman authentication\n"));
- return NT_STATUS_ACCESS_DENIED;
+ if (tevent_req_nomem(lm_response.data, req)) {
+ return tevent_req_post(req, ev);
}
- } else if ((cli->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) && passlen == 24) {
- /* Encrypted mode needed, and encrypted password supplied. */
+
+ if (!SMBencrypt(pass, cli->secblob.data,
+ (uint8_t *)lm_response.data)) {
+ DEBUG(1, ("Password is > 14 chars in length, and is "
+ "therefore incompatible with Lanman "
+ "authentication\n"));
+ tevent_req_nterror(req, NT_STATUS_ACCESS_DENIED);
+ return tevent_req_post(req, ev);
+ }
+ } else if ((cli->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE)
+ && passlen == 24) {
+ /*
+ * Encrypted mode needed, and encrypted password
+ * supplied.
+ */
lm_response = data_blob(pass, passlen);
+ if (tevent_req_nomem(lm_response.data, req)) {
+ return tevent_req_post(req, ev);
+ }
} else if (passlen > 0) {
- /* Plaintext mode needed, assume plaintext supplied. */
- passlen = clistr_push(cli, pword, pass, sizeof(pword), STR_TERMINATE);
+ uint8_t *buf;
+ size_t converted_size;
+ /*
+ * Plaintext mode needed, assume plaintext supplied.
+ */
+ buf = talloc_array(talloc_tos(), uint8_t, 0);
+ buf = smb_bytes_push_str(buf, cli_ucs2(cli), pass, passlen+1,
+ &converted_size);
+ if (tevent_req_nomem(buf, req)) {
+ return tevent_req_post(req, ev);
+ }
lm_response = data_blob(pass, passlen);
+ TALLOC_FREE(buf);
+ if (tevent_req_nomem(lm_response.data, req)) {
+ return tevent_req_post(req, ev);
+ }
+ }
+
+ SCVAL(vwv+0, 0, 0xff);
+ SCVAL(vwv+0, 1, 0);
+ SSVAL(vwv+1, 0, 0);
+ SSVAL(vwv+2, 0, CLI_BUFFER_SIZE);
+ SSVAL(vwv+3, 0, 2);
+ SSVAL(vwv+4, 0, 1);
+ SIVAL(vwv+5, 0, cli->sesskey);
+ SSVAL(vwv+7, 0, lm_response.length);
+
+ bytes = talloc_array(state, uint8_t, lm_response.length);
+ if (tevent_req_nomem(bytes, req)) {
+ return tevent_req_post(req, ev);
+ }
+ if (lm_response.length != 0) {
+ memcpy(bytes, lm_response.data, lm_response.length);
+ }
+ data_blob_free(&lm_response);
+
+ tmp = talloc_strdup_upper(talloc_tos(), user);
+ if (tevent_req_nomem(tmp, req)) {
+ return tevent_req_post(req, ev);
}
+ bytes = smb_bytes_push_str(bytes, cli_ucs2(cli), tmp, strlen(tmp)+1,
+ NULL);
+ TALLOC_FREE(tmp);
+
+ tmp = talloc_strdup_upper(talloc_tos(), workgroup);
+ if (tevent_req_nomem(tmp, req)) {
+ return tevent_req_post(req, ev);
+ }
+ bytes = smb_bytes_push_str(bytes, cli_ucs2(cli), tmp, strlen(tmp)+1,
+ NULL);
+ bytes = smb_bytes_push_str(bytes, cli_ucs2(cli), "Unix", 5, NULL);
+ bytes = smb_bytes_push_str(bytes, cli_ucs2(cli), "Samba", 6, NULL);
- /* send a session setup command */
- memset(cli->outbuf,'\0',smb_size);
- cli_set_message(cli->outbuf,10, 0, True);
- SCVAL(cli->outbuf,smb_com,SMBsesssetupX);
- cli_setup_packet(cli);
+ if (tevent_req_nomem(bytes, req)) {
+ return tevent_req_post(req, ev);
+ }
- SCVAL(cli->outbuf,smb_vwv0,0xFF);
- SSVAL(cli->outbuf,smb_vwv2,cli->max_xmit);
- SSVAL(cli->outbuf,smb_vwv3,2);
- SSVAL(cli->outbuf,smb_vwv4,1);
- SIVAL(cli->outbuf,smb_vwv5,cli->sesskey);
- SSVAL(cli->outbuf,smb_vwv7,lm_response.length);
+ subreq = cli_smb_send(state, ev, cli, SMBsesssetupX, 0, 10, vwv,
+ talloc_get_size(bytes), bytes);
+ if (tevent_req_nomem(subreq, req)) {
+ return tevent_req_post(req, ev);
+ }
+ tevent_req_set_callback(subreq, cli_session_setup_lanman2_done, req);
+ return req;
+}
- p = smb_buf(cli->outbuf);
- memcpy(p,lm_response.data,lm_response.length);
- p += lm_response.length;
- p += clistr_push(cli, p, user, -1, STR_TERMINATE|STR_UPPER);
- p += clistr_push(cli, p, workgroup, -1, STR_TERMINATE|STR_UPPER);
- p += clistr_push(cli, p, "Unix", -1, STR_TERMINATE);
- p += clistr_push(cli, p, "Samba", -1, STR_TERMINATE);
- cli_setup_bcc(cli, p);
+static void cli_session_setup_lanman2_done(struct tevent_req *subreq)
+{
+ struct tevent_req *req = tevent_req_callback_data(
+ subreq, struct tevent_req);
+ struct cli_session_setup_lanman2_state *state = tevent_req_data(
+ req, struct cli_session_setup_lanman2_state);
+ struct cli_state *cli = state->cli;
+ uint32_t num_bytes;
+ uint8_t *in;
+ char *inbuf;
+ uint8_t *bytes;
+ uint8_t *p;
+ NTSTATUS status;
- if (!cli_send_smb(cli) || !cli_receive_smb(cli)) {
- return cli_nt_error(cli);
+ status = cli_smb_recv(subreq, state, &in, 0, NULL, NULL,
+ &num_bytes, &bytes);
+ TALLOC_FREE(subreq);
+ if (!NT_STATUS_IS_OK(status)) {
+ tevent_req_nterror(req, status);
+ return;
}
- show_msg(cli->inbuf);
+ inbuf = (char *)in;
+ p = bytes;
+
+ cli->vuid = SVAL(inbuf, smb_uid);
+
+ p += clistr_pull(inbuf, cli->server_os, (char *)p, sizeof(fstring),
+ bytes+num_bytes-p, STR_TERMINATE);
+ p += clistr_pull(inbuf, cli->server_type, (char *)p, sizeof(fstring),
+ bytes+num_bytes-p, STR_TERMINATE);
+ p += clistr_pull(inbuf, cli->server_domain, (char *)p, sizeof(fstring),
+ bytes+num_bytes-p, STR_TERMINATE);
- if (cli_is_error(cli)) {
- return cli_nt_error(cli);
+ if (strstr(cli->server_type, "Samba")) {
+ cli->is_samba = True;
+ }
+ status = cli_set_username(cli, state->user);
+ if (tevent_req_nterror(req, status)) {
+ return;
}
+ tevent_req_done(req);
+}
- /* use the returned vuid from now on */
- cli->vuid = SVAL(cli->inbuf,smb_uid);
- status = cli_set_username(cli, user);
+static NTSTATUS cli_session_setup_lanman2_recv(struct tevent_req *req)
+{
+ return tevent_req_simple_recv_ntstatus(req);
+}
+
+static NTSTATUS cli_session_setup_lanman2(struct cli_state *cli, const char *user,
+ const char *pass, size_t passlen,
+ const char *workgroup)
+{
+ TALLOC_CTX *frame = talloc_stackframe();
+ struct event_context *ev;
+ struct tevent_req *req;
+ NTSTATUS status = NT_STATUS_NO_MEMORY;
+
+ if (cli_has_async_calls(cli)) {
+ /*
+ * Can't use sync call while an async call is in flight
+ */
+ status = NT_STATUS_INVALID_PARAMETER;
+ goto fail;
+ }
+ ev = event_context_init(frame);
+ if (ev == NULL) {
+ goto fail;
+ }
+ req = cli_session_setup_lanman2_send(frame, ev, cli, user, pass, passlen,
+ workgroup);
+ if (req == NULL) {
+ goto fail;
+ }
+ if (!tevent_req_poll_ntstatus(req, ev, &status)) {
+ goto fail;
+ }
+ status = cli_session_setup_lanman2_recv(req);
+ fail:
+ TALLOC_FREE(frame);
if (!NT_STATUS_IS_OK(status)) {
- return status;
+ cli_set_error(cli, status);
}
- return NT_STATUS_OK;
+ return status;
}
/****************************************************************************
generated by cgit (git 2.34.1) at 2024-11-23 05:21:39 +0000