218 строки
8.4 KiB
C++
218 строки
8.4 KiB
C++
/*
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microsoft-oms-auditd-plugin
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Copyright (c) Microsoft Corporation
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All rights reserved.
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MIT License
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Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the ""Software""), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED *AS IS*, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include "Translate.h"
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#include "StringTable.h"
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#include "StringUtils.h"
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#include <algorithm>
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static StringTable<field_type_t> s_field_table(field_type_t::UNCLASSIFIED, {
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{"auid", field_type_t::UID},
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{"uid", field_type_t::UID},
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{"euid", field_type_t::UID},
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{"suid", field_type_t::UID},
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{"fsuid", field_type_t::UID},
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{"ouid", field_type_t::UID},
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{"oauid", field_type_t::UID},
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{"old-auid", field_type_t::UID},
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{"iuid", field_type_t::UID},
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{"id", field_type_t::UID},
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{"inode_uid", field_type_t::UID},
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{"sauid", field_type_t::UID},
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{"obj_uid", field_type_t::UID},
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{"obj_gid", field_type_t::GID},
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{"gid", field_type_t::GID},
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{"egid", field_type_t::GID},
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{"sgid", field_type_t::GID},
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{"fsgid", field_type_t::GID},
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{"ogid", field_type_t::GID},
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{"igid", field_type_t::GID},
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{"inode_gid", field_type_t::GID},
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{"new_gid", field_type_t::GID},
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{"syscall", field_type_t::SYSCALL},
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{"arch", field_type_t::ARCH},
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{"exit", field_type_t::EXIT},
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{"path", field_type_t::ESCAPED},
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{"comm", field_type_t::ESCAPED},
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{"exe", field_type_t::ESCAPED},
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{"file", field_type_t::ESCAPED},
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{"name", field_type_t::ESCAPED},
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{"watch", field_type_t::ESCAPED},
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{"cwd", field_type_t::ESCAPED},
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{"cmd", field_type_t::ESCAPED},
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{"acct", field_type_t::ESCAPED},
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{"dir", field_type_t::ESCAPED},
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{"key", field_type_t::ESCAPED_KEY},
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{"vm", field_type_t::ESCAPED},
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{"old-chardev", field_type_t::ESCAPED},
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{"new-chardev", field_type_t::ESCAPED},
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{"old-disk", field_type_t::ESCAPED},
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{"new-disk", field_type_t::ESCAPED},
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{"old-fs", field_type_t::ESCAPED},
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{"new-fs", field_type_t::ESCAPED},
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{"old-net", field_type_t::ESCAPED},
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{"new-net", field_type_t::ESCAPED},
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{"device", field_type_t::ESCAPED},
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{"cgroup", field_type_t::ESCAPED},
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{"perm", field_type_t::PERM},
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{"perm_mask", field_type_t::PERM},
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{"mode", field_type_t::MODE},
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{"saddr", field_type_t::SOCKADDR},
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{"prom", field_type_t::PROMISC},
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{"old_prom", field_type_t::PROMISC},
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{"capability", field_type_t::CAPABILITY},
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{"res", field_type_t::SUCCESS},
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{"result", field_type_t::SUCCESS},
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{"a0", field_type_t::A0},
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{"a1", field_type_t::A1},
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{"a2", field_type_t::A2},
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{"a3", field_type_t::A3},
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{"sig", field_type_t::SIGNAL},
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{"list", field_type_t::LIST},
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{"data", field_type_t::TTY_DATA},
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{"ses", field_type_t::SESSION},
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{"old-ses", field_type_t::SESSION},
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{"cap_pi", field_type_t::CAP_BITMAP},
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{"cap_pe", field_type_t::CAP_BITMAP},
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{"cap_pp", field_type_t::CAP_BITMAP},
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{"cap_fi", field_type_t::CAP_BITMAP},
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{"cap_fp", field_type_t::CAP_BITMAP},
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{"fp", field_type_t::CAP_BITMAP},
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{"fi", field_type_t::CAP_BITMAP},
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{"fe", field_type_t::CAP_BITMAP},
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{"old_pp", field_type_t::CAP_BITMAP},
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{"old_pi", field_type_t::CAP_BITMAP},
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{"old_pe", field_type_t::CAP_BITMAP},
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{"new_pp", field_type_t::CAP_BITMAP},
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{"new_pi", field_type_t::CAP_BITMAP},
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{"new_pe", field_type_t::CAP_BITMAP},
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{"family", field_type_t::NFPROTO},
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{"icmptype", field_type_t::ICMPTYPE},
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{"proto", field_type_t::PROTOCOL},
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{"addr", field_type_t::ADDR},
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{"apparmor", field_type_t::ESCAPED},
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{"operation", field_type_t::ESCAPED},
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{"denied_mask", field_type_t::ESCAPED},
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{"info", field_type_t::ESCAPED},
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{"profile", field_type_t::ESCAPED},
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{"requested_mask", field_type_t::ESCAPED},
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{"per", field_type_t::PERSONALITY},
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{"code", field_type_t::SECCOMP},
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{"old-rng", field_type_t::ESCAPED},
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{"new-rng", field_type_t::ESCAPED},
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{"oflag", field_type_t::OFLAG},
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{"ocomm", field_type_t::ESCAPED},
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{"flags", field_type_t::MMAP},
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{"sigev_signo", field_type_t::SIGNAL},
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{"subj", field_type_t::MAC_LABEL},
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{"obj", field_type_t::MAC_LABEL},
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{"scontext", field_type_t::MAC_LABEL},
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{"tcontext", field_type_t::MAC_LABEL},
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{"vm-ctx", field_type_t::MAC_LABEL},
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{"img-ctx", field_type_t::MAC_LABEL},
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{"proctitle", field_type_t::PROCTITLE},
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{"grp", field_type_t::ESCAPED},
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{"new_group", field_type_t::ESCAPED},
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{"hook", field_type_t::HOOK},
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{"action", field_type_t::NETACTION},
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{"macproto", field_type_t::MACPROTO},
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{"invalid_context", field_type_t::ESCAPED},
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{"ioctlcmd", field_type_t::IOCTL_REQ},
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{"SV_INTEGRITY_HASH", field_type_t::ESCAPED},
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});
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field_type_t FieldNameToType(const std::string_view& name) {
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return s_field_table.ToInt(name);
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}
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field_type_t FieldNameToType(RecordType rtype, const std::string_view& name, const std::string_view& val) {
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using namespace std::string_view_literals;
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static auto SV_ARGC = "argc"sv;
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static auto SV__LEN = "_len"sv;
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static auto SV_SADDR = "saddr"sv;
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static auto SV_MSG = "msg"sv;
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static auto SV_FLAGS = "flags"sv;
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static auto SV_MODE = "mode"sv;
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static auto SV_FP = "fp"sv;
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static auto SV_ID = "id"sv;
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static auto SV_ACCT = "acct"sv;
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field_type_t ftype = field_type_t::UNKNOWN;
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switch (rtype) {
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case RecordType::EXECVE:
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if (name[0] == 'a' && !starts_with(name, SV_ARGC) && !ends_with(name, SV__LEN)) {
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ftype = field_type_t::ESCAPED;
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}
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break;
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case RecordType::AVC:
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if (name == SV_SADDR) {
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ftype = field_type_t::UNCLASSIFIED;
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}
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break;
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case RecordType::USER_TTY:
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if (name == SV_MSG) {
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ftype = field_type_t::ESCAPED;
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}
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break;
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case RecordType::NETFILTER_PKT:
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if (name == SV_SADDR) {
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ftype = field_type_t::ADDR;
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}
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break;
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case RecordType::PATH:
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if (name == SV_FLAGS) {
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ftype = field_type_t::FLAGS;
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}
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break;
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case RecordType::MQ_OPEN:
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if (name == SV_MODE) {
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ftype = field_type_t::MODE_SHORT;
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}
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break;
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case RecordType::CRYPTO_KEY_USER:
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if (name == SV_FP) {
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ftype = field_type_t::UNCLASSIFIED;
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}
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break;
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case RecordType::ADD_GROUP:
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// fallthrough
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case RecordType::GRP_MGMT:
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// fallthrough
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case RecordType::DEL_GROUP:
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if (name == SV_ID) {
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ftype = field_type_t::GID;
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}
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break;
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default:
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if (name == SV_ACCT) {
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if (val[0] == '"' || std::all_of(val.begin(), val.end(), [](unsigned char c) { return std::isxdigit(c); })) {
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ftype = field_type_t::ESCAPED;
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} else {
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ftype = field_type_t::UNCLASSIFIED;
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}
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}
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break;
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}
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if (ftype == field_type_t::UNKNOWN) {
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ftype = FieldNameToType(name);
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}
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return ftype;
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}
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