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Unix SMB/CIFS implementation.
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client error handling routines
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Copyright (C) Andrew Tridgell 1994-1998
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Copyright (C) Jelmer Vernooij 2003
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Copyright (C) Jeremy Allison 2006
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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/*****************************************************
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RAP error codes - a small start but will be extended.
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XXX: Perhaps these should move into a common function because they're
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duplicated in clirap2.c
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*******************************************************/
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{5, "RAP5: User has insufficient privilege" },
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{50, "RAP50: Not supported by server" },
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{65, "RAP65: Access denied" },
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{86, "RAP86: The specified password is invalid" },
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{2220, "RAP2220: Group does not exist" },
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{2221, "RAP2221: User does not exist" },
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{2226, "RAP2226: Operation only permitted on a Primary Domain Controller" },
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{2237, "RAP2237: User is not in group" },
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{2242, "RAP2242: The password of this user has expired." },
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{2243, "RAP2243: The password of this user cannot change." },
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{2244, "RAP2244: This password cannot be used now (password history conflict)." },
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{2245, "RAP2245: The password is shorter than required." },
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{2246, "RAP2246: The password of this user is too recent to change."},
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/* these really shouldn't be here ... */
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{0x80, "Not listening on called name"},
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{0x81, "Not listening for calling name"},
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{0x82, "Called name not present"},
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{0x83, "Called name present, but insufficient resources"},
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/****************************************************************************
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Return a description of an SMB error.
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****************************************************************************/
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static const char *cli_smb_errstr(struct cli_state *cli)
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return smb_dos_errstr(cli->inbuf);
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/****************************************************************************
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Convert a socket error into an NTSTATUS.
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****************************************************************************/
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static NTSTATUS cli_smb_rw_error_to_ntstatus(struct cli_state *cli)
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switch(cli->smb_rw_error) {
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case SMB_READ_TIMEOUT:
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return NT_STATUS_IO_TIMEOUT;
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return NT_STATUS_END_OF_FILE;
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/* What we shoud really do for read/write errors is convert from errno. */
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return NT_STATUS_INVALID_NETWORK_RESPONSE;
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return NT_STATUS_UNEXPECTED_NETWORK_ERROR;
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case SMB_READ_BAD_SIG:
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return NT_STATUS_INVALID_PARAMETER;
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return NT_STATUS_NO_MEMORY;
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return NT_STATUS_UNSUCCESSFUL;
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/***************************************************************************
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Return an error message - either an NT error, SMB error or a RAP error.
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Note some of the NT errors are actually warnings or "informational" errors
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in which case they can be safely ignored.
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****************************************************************************/
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const char *cli_errstr(struct cli_state *cli)
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fstring cli_error_message;
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uint32 flgs2 = SVAL(cli->inbuf,smb_flg2), errnum;
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if (!cli->initialised) {
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fstrcpy(cli_error_message, "[Programmer's error] cli_errstr called on unitialized cli_stat struct!\n");
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/* Was it server socket error ? */
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if (cli->fd == -1 && cli->smb_rw_error) {
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switch(cli->smb_rw_error) {
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case SMB_READ_TIMEOUT:
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slprintf(cli_error_message, sizeof(cli_error_message) - 1,
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"Call timed out: server did not respond after %d milliseconds",
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slprintf(cli_error_message, sizeof(cli_error_message) - 1,
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"Call returned zero bytes (EOF)" );
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slprintf(cli_error_message, sizeof(cli_error_message) - 1,
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"Read error: %s", strerror(errno) );
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case SMB_WRITE_ERROR:
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slprintf(cli_error_message, sizeof(cli_error_message) - 1,
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"Write error: %s", strerror(errno) );
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case SMB_READ_BAD_SIG:
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slprintf(cli_error_message, sizeof(cli_error_message) - 1,
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"Server packet had invalid SMB signature!");
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slprintf(cli_error_message, sizeof(cli_error_message) - 1,
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slprintf(cli_error_message, sizeof(cli_error_message) - 1,
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"Unknown error code %d\n", cli->smb_rw_error );
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/* Case #1: RAP error */
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if (cli->rap_error) {
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for (i = 0; rap_errmap[i].message != NULL; i++) {
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if (rap_errmap[i].err == cli->rap_error) {
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return rap_errmap[i].message;
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slprintf(cli_error_message, sizeof(cli_error_message) - 1, "RAP code %d",
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/* Case #2: 32-bit NT errors */
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if (flgs2 & FLAGS2_32_BIT_ERROR_CODES) {
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NTSTATUS status = NT_STATUS(IVAL(cli->inbuf,smb_rcls));
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return nt_errstr(status);
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cli_dos_error(cli, &errclass, &errnum);
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/* Case #3: SMB error */
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return cli_smb_errstr(cli);
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result = talloc_strdup(talloc_tos(), cli_error_message);
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/****************************************************************************
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Return the 32-bit NT status code from the last packet.
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****************************************************************************/
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NTSTATUS cli_nt_error(struct cli_state *cli)
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int flgs2 = SVAL(cli->inbuf,smb_flg2);
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/* Deal with socket errors first. */
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if (cli->fd == -1 && cli->smb_rw_error) {
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return cli_smb_rw_error_to_ntstatus(cli);
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if (!(flgs2 & FLAGS2_32_BIT_ERROR_CODES)) {
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int e_class = CVAL(cli->inbuf,smb_rcls);
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int code = SVAL(cli->inbuf,smb_err);
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return dos_to_ntstatus(e_class, code);
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return NT_STATUS(IVAL(cli->inbuf,smb_rcls));
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/****************************************************************************
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Return the DOS error from the last packet - an error class and an error
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****************************************************************************/
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void cli_dos_error(struct cli_state *cli, uint8 *eclass, uint32 *ecode)
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if(!cli->initialised) {
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/* Deal with socket errors first. */
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if (cli->fd == -1 && cli->smb_rw_error) {
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NTSTATUS status = cli_smb_rw_error_to_ntstatus(cli);
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ntstatus_to_dos( status, eclass, ecode);
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flgs2 = SVAL(cli->inbuf,smb_flg2);
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if (flgs2 & FLAGS2_32_BIT_ERROR_CODES) {
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NTSTATUS ntstatus = NT_STATUS(IVAL(cli->inbuf, smb_rcls));
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ntstatus_to_dos(ntstatus, eclass, ecode);
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*eclass = CVAL(cli->inbuf,smb_rcls);
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*ecode = SVAL(cli->inbuf,smb_err);
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/* Return a UNIX errno appropriate for the error received in the last
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int cli_errno(struct cli_state *cli)
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if (cli_is_nt_error(cli)) {
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status = cli_nt_error(cli);
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return map_errno_from_nt_status(status);
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if (cli_is_dos_error(cli)) {
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cli_dos_error(cli, &eclass, &ecode);
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status = dos_to_ntstatus(eclass, ecode);
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return map_errno_from_nt_status(status);
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* Yuck! A special case for this Vista error. Since its high-order
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* byte isn't 0xc0, it doesn't match cli_is_nt_error() above.
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status = cli_nt_error(cli);
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if (NT_STATUS_V(status) == NT_STATUS_V(NT_STATUS_INACCESSIBLE_SYSTEM_SHORTCUT)) {
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/* for other cases */
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/* Return true if the last packet was in error */
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bool cli_is_error(struct cli_state *cli)
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uint32 flgs2 = SVAL(cli->inbuf,smb_flg2), rcls = 0;
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/* A socket error is always an error. */
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if (cli->fd == -1 && cli->smb_rw_error != 0) {
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if (flgs2 & FLAGS2_32_BIT_ERROR_CODES) {
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/* Return error is error bits are set */
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rcls = IVAL(cli->inbuf, smb_rcls);
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return (rcls & 0xF0000000) == 0xC0000000;
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/* Return error if error class in non-zero */
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rcls = CVAL(cli->inbuf, smb_rcls);
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/* Return true if the last error was an NT error */
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bool cli_is_nt_error(struct cli_state *cli)
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uint32 flgs2 = SVAL(cli->inbuf,smb_flg2);
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/* A socket error is always an NT error. */
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if (cli->fd == -1 && cli->smb_rw_error != 0) {
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return cli_is_error(cli) && (flgs2 & FLAGS2_32_BIT_ERROR_CODES);
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/* Return true if the last error was a DOS error */
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bool cli_is_dos_error(struct cli_state *cli)
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uint32 flgs2 = SVAL(cli->inbuf,smb_flg2);
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/* A socket error is always a DOS error. */
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if (cli->fd == -1 && cli->smb_rw_error != 0) {
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return cli_is_error(cli) && !(flgs2 & FLAGS2_32_BIT_ERROR_CODES);
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/* Return the last error always as an NTSTATUS. */
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NTSTATUS cli_get_nt_error(struct cli_state *cli)
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if (cli_is_nt_error(cli)) {
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return cli_nt_error(cli);
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} else if (cli_is_dos_error(cli)) {
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cli_dos_error(cli, &eclass, &ecode);
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return dos_to_ntstatus(eclass, ecode);
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/* Something went wrong, we don't know what. */
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return NT_STATUS_UNSUCCESSFUL;
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/* Push an error code into the inbuf to be returned on the next
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void cli_set_nt_error(struct cli_state *cli, NTSTATUS status)
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SSVAL(cli->inbuf,smb_flg2, SVAL(cli->inbuf,smb_flg2)|FLAGS2_32_BIT_ERROR_CODES);
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SIVAL(cli->inbuf, smb_rcls, NT_STATUS_V(status));
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/* Reset an error. */
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void cli_reset_error(struct cli_state *cli)
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if (SVAL(cli->inbuf,smb_flg2) & FLAGS2_32_BIT_ERROR_CODES) {
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SIVAL(cli->inbuf, smb_rcls, NT_STATUS_V(NT_STATUS_OK));
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SCVAL(cli->inbuf,smb_rcls,0);
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SSVAL(cli->inbuf,smb_err,0);
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bool cli_state_is_connected(struct cli_state *cli)
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if (!cli->initialised) {