2020-10-21 00:22:33 +00:00
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// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (C) 2020, Microsoft Corporation.
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*
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* Author(s): Steve French <stfrench@microsoft.com>
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* David Howells <dhowells@redhat.com>
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*/
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2020-10-21 00:37:11 +00:00
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#include "cifsglob.h"
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#include "cifs_debug.h"
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#include "fs_context.h"
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static const match_table_t cifs_secflavor_tokens = {
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{ Opt_sec_krb5, "krb5" },
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{ Opt_sec_krb5i, "krb5i" },
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{ Opt_sec_krb5p, "krb5p" },
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{ Opt_sec_ntlmsspi, "ntlmsspi" },
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{ Opt_sec_ntlmssp, "ntlmssp" },
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{ Opt_ntlm, "ntlm" },
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{ Opt_sec_ntlmi, "ntlmi" },
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{ Opt_sec_ntlmv2, "nontlm" },
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{ Opt_sec_ntlmv2, "ntlmv2" },
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{ Opt_sec_ntlmv2i, "ntlmv2i" },
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{ Opt_sec_lanman, "lanman" },
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{ Opt_sec_none, "none" },
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{ Opt_sec_err, NULL }
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};
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int cifs_parse_security_flavors(char *value, struct smb_vol *vol)
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{
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substring_t args[MAX_OPT_ARGS];
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/*
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* With mount options, the last one should win. Reset any existing
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* settings back to default.
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*/
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vol->sectype = Unspecified;
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vol->sign = false;
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switch (match_token(value, cifs_secflavor_tokens, args)) {
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case Opt_sec_krb5p:
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cifs_dbg(VFS, "sec=krb5p is not supported!\n");
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return 1;
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case Opt_sec_krb5i:
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vol->sign = true;
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fallthrough;
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case Opt_sec_krb5:
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vol->sectype = Kerberos;
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break;
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case Opt_sec_ntlmsspi:
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vol->sign = true;
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fallthrough;
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case Opt_sec_ntlmssp:
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vol->sectype = RawNTLMSSP;
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break;
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case Opt_sec_ntlmi:
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vol->sign = true;
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fallthrough;
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case Opt_ntlm:
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vol->sectype = NTLM;
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break;
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case Opt_sec_ntlmv2i:
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vol->sign = true;
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fallthrough;
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case Opt_sec_ntlmv2:
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vol->sectype = NTLMv2;
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break;
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#ifdef CONFIG_CIFS_WEAK_PW_HASH
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case Opt_sec_lanman:
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vol->sectype = LANMAN;
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break;
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#endif
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case Opt_sec_none:
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vol->nullauth = 1;
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break;
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default:
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cifs_dbg(VFS, "bad security option: %s\n", value);
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return 1;
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}
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return 0;
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}
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