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log_format_impls.cc
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/**
* Copyright (c) 2007-2017, Timothy Stack
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* * Neither the name of Timothy Stack nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ''AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* @file log_format_impls.cc
*/
#include <algorithm>
#include <utility>
#include "log_format.hh"
#include <stdio.h>
#include "base/injector.bind.hh"
#include "base/opt_util.hh"
#include "config.h"
#include "formats/logfmt/logfmt.parser.hh"
#include "log_vtab_impl.hh"
#include "sql_util.hh"
#include "yajlpp/yajlpp.hh"
class generic_log_format : public log_format {
static pcre_format* get_pcre_log_formats()
{
static pcre_format log_fmt[] = {
pcre_format(
"^(?:\\*\\*\\*\\s+)?(?<timestamp>@[0-9a-zA-Z]{16,24})(.*)"),
pcre_format(
"^(?:\\*\\*\\*\\s+)?(?<timestamp>[\\dTZ: +/\\-,\\.-]+)([^:]+)"),
pcre_format(
"^(?:\\*\\*\\*\\s+)?(?<timestamp>[\\w:+/\\.-]+) \\[\\w (.*)"),
pcre_format("^(?:\\*\\*\\*\\s+)?(?<timestamp>[\\w:,/\\.-]+) (.*)"),
pcre_format(
"^(?:\\*\\*\\*\\s+)?(?<timestamp>[\\w:,/\\.-]+) - (.*)"),
pcre_format(
"^(?:\\*\\*\\*\\s+)?(?<timestamp>[\\w: \\.,/-]+) - (.*)"),
pcre_format("^(?:\\*\\*\\*\\s+)?(?<timestamp>[\\w: "
"\\.,/-]+)\\[[^\\]]+\\](.*)"),
pcre_format("^(?:\\*\\*\\*\\s+)?(?<timestamp>[\\w: \\.,/-]+) (.*)"),
pcre_format(
R"(^(?:\*\*\*\s+)?\[(?<timestamp>[\w: \.,+/-]+)\]\s*(\w+):?)"),
pcre_format(
"^(?:\\*\\*\\*\\s+)?\\[(?<timestamp>[\\w: \\.,+/-]+)\\] (.*)"),
pcre_format("^(?:\\*\\*\\*\\s+)?\\[(?<timestamp>[\\w: "
"\\.,+/-]+)\\] \\[(\\w+)\\]"),
pcre_format("^(?:\\*\\*\\*\\s+)?\\[(?<timestamp>[\\w: "
"\\.,+/-]+)\\] \\w+ (.*)"),
pcre_format("^(?:\\*\\*\\*\\s+)?\\[(?<timestamp>[\\w: ,+/-]+)\\] "
"\\(\\d+\\) (.*)"),
pcre_format(),
};
return log_fmt;
}
std::string get_pattern_regex(uint64_t line_number) const override
{
int pat_index = this->pattern_index_for_line(line_number);
return get_pcre_log_formats()[pat_index].name;
}
const intern_string_t get_name() const override
{
return intern_string::lookup("generic_log");
}
scan_result_t scan(logfile& lf,
std::vector<logline>& dst,
const line_info& li,
shared_buffer_ref& sbr,
scan_batch_context& sbc) override
{
struct exttm log_time;
struct timeval log_tv;
string_fragment ts;
nonstd::optional<string_fragment> level;
const char* last_pos;
if ((last_pos = this->log_scanf(dst.size(),
sbr.to_string_fragment(),
get_pcre_log_formats(),
nullptr,
&log_time,
&log_tv,
&ts,
&level))
!= nullptr)
{
log_level_t level_val = log_level_t::LEVEL_UNKNOWN;
if (level) {
level_val = string2level(level->data(), level->length());
}
if (!((log_time.et_flags & ETF_DAY_SET)
&& (log_time.et_flags & ETF_MONTH_SET)
&& (log_time.et_flags & ETF_YEAR_SET)))
{
this->check_for_new_year(dst, log_time, log_tv);
}
dst.emplace_back(li.li_file_range.fr_offset, log_tv, level_val);
return SCAN_MATCH;
}
return SCAN_NO_MATCH;
}
void annotate(uint64_t line_number,
string_attrs_t& sa,
logline_value_vector& values,
bool annotate_module) const override
{
auto& line = values.lvv_sbr;
int pat_index = this->pattern_index_for_line(line_number);
auto& fmt = get_pcre_log_formats()[pat_index];
int prefix_len = 0;
auto md = fmt.pcre->create_match_data();
auto match_res = fmt.pcre->capture_from(line.to_string_fragment())
.into(md)
.matches(PCRE2_NO_UTF_CHECK)
.ignore_error();
if (!match_res) {
return;
}
auto lr = to_line_range(md[fmt.pf_timestamp_index].value());
sa.emplace_back(lr, logline::L_TIMESTAMP.value());
prefix_len = lr.lr_end;
auto level_cap = md[2];
if (level_cap) {
if (string2level(level_cap->data(), level_cap->length(), true)
!= LEVEL_UNKNOWN)
{
prefix_len = level_cap->sf_end;
}
}
lr.lr_start = 0;
lr.lr_end = prefix_len;
sa.emplace_back(lr, logline::L_PREFIX.value());
lr.lr_start = prefix_len;
lr.lr_end = line.length();
sa.emplace_back(lr, SA_BODY.value());
}
std::shared_ptr<log_format> specialized(int fmt_lock) override
{
auto retval = std::make_shared<generic_log_format>(*this);
retval->lf_specialized = true;
return retval;
}
};
std::string
from_escaped_string(const char* str, size_t len)
{
std::string retval;
for (size_t lpc = 0; lpc < len; lpc++) {
switch (str[lpc]) {
case '\\':
if ((lpc + 3) < len && str[lpc + 1] == 'x') {
int ch;
if (sscanf(&str[lpc + 2], "%2x", &ch) == 1) {
retval.append(1, (char) ch & 0xff);
lpc += 3;
}
}
break;
default:
retval.append(1, str[lpc]);
break;
}
}
return retval;
}
nonstd::optional<const char*>
lnav_strnstr(const char* s, const char* find, size_t slen)
{
char c, sc;
size_t len;
if ((c = *find++) != '\0') {
len = strlen(find);
do {
do {
if (slen < 1 || (sc = *s) == '\0') {
return nonstd::nullopt;
}
--slen;
++s;
} while (sc != c);
if (len > slen) {
return nonstd::nullopt;
}
} while (strncmp(s, find, len) != 0);
s--;
}
return s;
}
struct separated_string {
const char* ss_str;
size_t ss_len;
const char* ss_separator;
size_t ss_separator_len;
separated_string(const char* str, size_t len)
: ss_str(str), ss_len(len), ss_separator(","),
ss_separator_len(strlen(this->ss_separator))
{
}
separated_string& with_separator(const char* sep)
{
this->ss_separator = sep;
this->ss_separator_len = strlen(sep);
return *this;
}
struct iterator {
const separated_string& i_parent;
const char* i_pos;
const char* i_next_pos;
size_t i_index;
iterator(const separated_string& ss, const char* pos)
: i_parent(ss), i_pos(pos), i_next_pos(pos), i_index(0)
{
this->update();
}
void update()
{
const separated_string& ss = this->i_parent;
auto next_field
= lnav_strnstr(this->i_pos,
ss.ss_separator,
ss.ss_len - (this->i_pos - ss.ss_str));
if (next_field) {
this->i_next_pos = next_field.value() + ss.ss_separator_len;
} else {
this->i_next_pos = ss.ss_str + ss.ss_len;
}
}
iterator& operator++()
{
this->i_pos = this->i_next_pos;
this->update();
this->i_index += 1;
return *this;
}
string_fragment operator*()
{
const auto& ss = this->i_parent;
int end;
if (this->i_next_pos < (ss.ss_str + ss.ss_len)) {
end = this->i_next_pos - ss.ss_str - ss.ss_separator_len;
} else {
end = this->i_next_pos - ss.ss_str;
}
return string_fragment::from_byte_range(
ss.ss_str, this->i_pos - ss.ss_str, end);
}
bool operator==(const iterator& other) const
{
return (&this->i_parent == &other.i_parent)
&& (this->i_pos == other.i_pos);
}
bool operator!=(const iterator& other) const
{
return !(*this == other);
}
size_t index() const { return this->i_index; }
};
iterator begin() { return {*this, this->ss_str}; }
iterator end() { return {*this, this->ss_str + this->ss_len}; }
};
class bro_log_format : public log_format {
public:
struct field_def {
logline_value_meta fd_meta;
std::string fd_collator;
nonstd::optional<size_t> fd_numeric_index;
explicit field_def(const intern_string_t name,
int col,
log_format* format)
: fd_meta(name, value_kind_t::VALUE_TEXT, col, format)
{
}
field_def& with_kind(value_kind_t kind,
bool identifier = false,
const std::string& collator = "")
{
this->fd_meta.lvm_kind = kind;
this->fd_meta.lvm_identifier = identifier;
this->fd_collator = collator;
return *this;
}
field_def& with_numeric_index(size_t index)
{
this->fd_numeric_index = index;
return *this;
}
};
bro_log_format()
{
this->lf_is_self_describing = true;
this->lf_time_ordered = false;
}
const intern_string_t get_name() const override
{
static const intern_string_t name(intern_string::lookup("bro"));
return this->blf_format_name.empty() ? name : this->blf_format_name;
}
void clear() override
{
this->log_format::clear();
this->blf_format_name.clear();
this->blf_field_defs.clear();
}
scan_result_t scan_int(std::vector<logline>& dst,
const line_info& li,
shared_buffer_ref& sbr)
{
static const intern_string_t STATUS_CODE
= intern_string::lookup("bro_status_code");
static const intern_string_t TS = intern_string::lookup("bro_ts");
static const intern_string_t UID = intern_string::lookup("bro_uid");
separated_string ss(sbr.get_data(), sbr.length());
struct timeval tv;
struct exttm tm;
bool found_ts = false;
log_level_t level = LEVEL_INFO;
uint8_t opid = 0;
ss.with_separator(this->blf_separator.get());
for (auto iter = ss.begin(); iter != ss.end(); ++iter) {
if (iter.index() == 0 && *iter == "#close") {
return SCAN_MATCH;
}
if (iter.index() >= this->blf_field_defs.size()) {
break;
}
const auto& fd = this->blf_field_defs[iter.index()];
if (TS == fd.fd_meta.lvm_name) {
string_fragment sf = *iter;
if (this->lf_date_time.scan(
sf.data(), sf.length(), nullptr, &tm, tv))
{
this->lf_timestamp_flags = tm.et_flags;
found_ts = true;
}
} else if (STATUS_CODE == fd.fd_meta.lvm_name) {
string_fragment sf = *iter;
if (!sf.empty() && sf[0] >= '4') {
level = LEVEL_ERROR;
}
} else if (UID == fd.fd_meta.lvm_name) {
string_fragment sf = *iter;
opid = hash_str(sf.data(), sf.length());
}
if (fd.fd_numeric_index) {
switch (fd.fd_meta.lvm_kind) {
case value_kind_t::VALUE_INTEGER:
case value_kind_t::VALUE_FLOAT: {
string_fragment sf = *iter;
char field_copy[sf.length() + 1];
double val;
if (sscanf(sf.to_string(field_copy), "%lf", &val) == 1)
{
this->lf_value_stats[fd.fd_numeric_index.value()]
.add_value(val);
}
break;
}
default:
break;
}
}
}
if (found_ts) {
if (!this->lf_specialized) {
for (auto& ll : dst) {
ll.set_ignore(true);
}
}
dst.emplace_back(li.li_file_range.fr_offset, tv, level, 0, opid);
return SCAN_MATCH;
}
return SCAN_NO_MATCH;
}
scan_result_t scan(logfile& lf,
std::vector<logline>& dst,
const line_info& li,
shared_buffer_ref& sbr,
scan_batch_context& sbc) override
{
static const auto SEP_RE
= lnav::pcre2pp::code::from_const(R"(^#separator\s+(.+))");
if (!this->blf_format_name.empty()) {
return this->scan_int(dst, li, sbr);
}
if (dst.empty() || dst.size() > 20 || sbr.empty()
|| sbr.get_data()[0] == '#')
{
return SCAN_NO_MATCH;
}
auto line_iter = dst.begin();
auto read_result = lf.read_line(line_iter);
if (read_result.isErr()) {
return SCAN_NO_MATCH;
}
auto line = read_result.unwrap();
auto md = SEP_RE.create_match_data();
auto match_res = SEP_RE.capture_from(line.to_string_fragment())
.into(md)
.matches(PCRE2_NO_UTF_CHECK)
.ignore_error();
if (!match_res) {
return SCAN_NO_MATCH;
}
this->clear();
auto sep = from_escaped_string(md[1]->data(), md[1]->length());
this->blf_separator = intern_string::lookup(sep);
for (++line_iter; line_iter != dst.end(); ++line_iter) {
auto next_read_result = lf.read_line(line_iter);
if (next_read_result.isErr()) {
return SCAN_NO_MATCH;
}
line = next_read_result.unwrap();
separated_string ss(line.get_data(), line.length());
ss.with_separator(this->blf_separator.get());
auto iter = ss.begin();
string_fragment directive = *iter;
if (directive.empty() || directive[0] != '#') {
continue;
}
++iter;
if (iter == ss.end()) {
continue;
}
if (directive == "#set_separator") {
this->blf_set_separator = intern_string::lookup(*iter);
} else if (directive == "#empty_field") {
this->blf_empty_field = intern_string::lookup(*iter);
} else if (directive == "#unset_field") {
this->blf_unset_field = intern_string::lookup(*iter);
} else if (directive == "#path") {
auto full_name = fmt::format(FMT_STRING("bro_{}_log"), *iter);
this->blf_format_name = intern_string::lookup(full_name);
} else if (directive == "#fields" && this->blf_field_defs.empty()) {
do {
this->blf_field_defs.emplace_back(
intern_string::lookup("bro_" + sql_safe_ident(*iter)),
this->blf_field_defs.size(),
this);
++iter;
} while (iter != ss.end());
} else if (directive == "#types") {
static const char* KNOWN_IDS[] = {
"bro_conn_uids",
"bro_fuid",
"bro_host",
"bro_info_code",
"bro_method",
"bro_mime_type",
"bro_orig_fuids",
"bro_parent_fuid",
"bro_proto",
"bro_referrer",
"bro_resp_fuids",
"bro_service",
"bro_status_code",
"bro_uid",
"bro_uri",
"bro_user_agent",
"bro_username",
};
int numeric_count = 0;
do {
string_fragment field_type = *iter;
auto& fd = this->blf_field_defs[iter.index() - 1];
if (field_type == "time") {
fd.with_kind(value_kind_t::VALUE_TIMESTAMP);
} else if (field_type == "string") {
bool ident = std::binary_search(std::begin(KNOWN_IDS),
std::end(KNOWN_IDS),
fd.fd_meta.lvm_name);
fd.with_kind(value_kind_t::VALUE_TEXT, ident);
} else if (field_type == "count") {
bool ident = std::binary_search(std::begin(KNOWN_IDS),
std::end(KNOWN_IDS),
fd.fd_meta.lvm_name);
fd.with_kind(value_kind_t::VALUE_INTEGER, ident)
.with_numeric_index(numeric_count);
numeric_count += 1;
} else if (field_type == "bool") {
fd.with_kind(value_kind_t::VALUE_BOOLEAN);
} else if (field_type == "addr") {
fd.with_kind(
value_kind_t::VALUE_TEXT, true, "ipaddress");
} else if (field_type == "port") {
fd.with_kind(value_kind_t::VALUE_INTEGER, true);
} else if (field_type == "interval") {
fd.with_kind(value_kind_t::VALUE_FLOAT)
.with_numeric_index(numeric_count);
numeric_count += 1;
}
++iter;
} while (iter != ss.end());
this->lf_value_stats.resize(numeric_count);
}
}
if (!this->blf_format_name.empty() && !this->blf_separator.empty()
&& !this->blf_field_defs.empty())
{
dst.clear();
return this->scan_int(dst, li, sbr);
}
this->blf_format_name.clear();
this->lf_value_stats.clear();
return SCAN_NO_MATCH;
}
void annotate(uint64_t line_number,
string_attrs_t& sa,
logline_value_vector& values,
bool annotate_module) const override
{
static const intern_string_t TS = intern_string::lookup("bro_ts");
static const intern_string_t UID = intern_string::lookup("bro_uid");
auto& sbr = values.lvv_sbr;
separated_string ss(sbr.get_data(), sbr.length());
ss.with_separator(this->blf_separator.get());
for (auto iter = ss.begin(); iter != ss.end(); ++iter) {
if (iter.index() >= this->blf_field_defs.size()) {
return;
}
const field_def& fd = this->blf_field_defs[iter.index()];
string_fragment sf = *iter;
if (sf == this->blf_empty_field) {
sf.clear();
} else if (sf == this->blf_unset_field) {
sf.invalidate();
}
auto lr = line_range(sf.sf_begin, sf.sf_end);
if (fd.fd_meta.lvm_name == TS) {
sa.emplace_back(lr, logline::L_TIMESTAMP.value());
} else if (fd.fd_meta.lvm_name == UID) {
sa.emplace_back(lr, logline::L_OPID.value());
}
if (lr.is_valid()) {
values.lvv_values.emplace_back(fd.fd_meta, sbr, lr);
} else {
values.lvv_values.emplace_back(fd.fd_meta);
}
}
}
const logline_value_stats* stats_for_value(
const intern_string_t& name) const override
{
const logline_value_stats* retval = nullptr;
for (const auto& blf_field_def : this->blf_field_defs) {
if (blf_field_def.fd_meta.lvm_name == name) {
if (!blf_field_def.fd_numeric_index) {
break;
}
retval = &this->lf_value_stats[blf_field_def.fd_numeric_index
.value()];
break;
}
}
return retval;
}
bool hide_field(const intern_string_t field_name, bool val) override
{
auto fd_iter
= std::find_if(this->blf_field_defs.begin(),
this->blf_field_defs.end(),
[field_name](const field_def& elem) {
return elem.fd_meta.lvm_name == field_name;
});
if (fd_iter == this->blf_field_defs.end()) {
return false;
}
fd_iter->fd_meta.lvm_user_hidden = val;
return true;
}
std::shared_ptr<log_format> specialized(int fmt_lock = -1) override
{
auto retval = std::make_shared<bro_log_format>(*this);
retval->lf_specialized = true;
return retval;
}
class bro_log_table : public log_format_vtab_impl {
public:
explicit bro_log_table(const bro_log_format& format)
: log_format_vtab_impl(format), blt_format(format)
{
}
void get_columns(std::vector<vtab_column>& cols) const override
{
for (const auto& fd : this->blt_format.blf_field_defs) {
std::pair<int, unsigned int> type_pair
= log_vtab_impl::logline_value_to_sqlite_type(
fd.fd_meta.lvm_kind);
cols.emplace_back(fd.fd_meta.lvm_name.to_string(),
type_pair.first,
fd.fd_collator,
false,
"",
type_pair.second);
}
}
void get_foreign_keys(
std::vector<std::string>& keys_inout) const override
{
this->log_vtab_impl::get_foreign_keys(keys_inout);
for (const auto& fd : this->blt_format.blf_field_defs) {
if (fd.fd_meta.lvm_identifier) {
keys_inout.push_back(fd.fd_meta.lvm_name.to_string());
}
}
}
const bro_log_format& blt_format;
};
static std::map<intern_string_t, std::shared_ptr<bro_log_table>>&
get_tables()
{
static std::map<intern_string_t, std::shared_ptr<bro_log_table>> retval;
return retval;
}
std::shared_ptr<log_vtab_impl> get_vtab_impl() const override
{
if (this->blf_format_name.empty()) {
return nullptr;
}
std::shared_ptr<bro_log_table> retval = nullptr;
auto& tables = get_tables();
auto iter = tables.find(this->blf_format_name);
if (iter == tables.end()) {
retval = std::make_shared<bro_log_table>(*this);
tables[this->blf_format_name] = retval;
}
return retval;
}
void get_subline(const logline& ll,
shared_buffer_ref& sbr,
bool full_message) override
{
}
intern_string_t blf_format_name;
intern_string_t blf_separator;
intern_string_t blf_set_separator;
intern_string_t blf_empty_field;
intern_string_t blf_unset_field;
std::vector<field_def> blf_field_defs;
};
struct ws_separated_string {
const char* ss_str;
size_t ss_len;
explicit ws_separated_string(const char* str = nullptr, size_t len = -1)
: ss_str(str), ss_len(len)
{
}
struct iterator {
enum class state_t {
NORMAL,
QUOTED,
};
const ws_separated_string& i_parent;
const char* i_pos;
const char* i_next_pos;
size_t i_index{0};
state_t i_state{state_t::NORMAL};
iterator(const ws_separated_string& ss, const char* pos)
: i_parent(ss), i_pos(pos), i_next_pos(pos)
{
this->update();
}
void update()
{
const auto& ss = this->i_parent;
bool done = false;
while (!done && this->i_next_pos < (ss.ss_str + ss.ss_len)) {
switch (this->i_state) {
case state_t::NORMAL:
if (*this->i_next_pos == '"') {
this->i_state = state_t::QUOTED;
} else if (isspace(*this->i_next_pos)) {
done = true;
}
break;
case state_t::QUOTED:
if (*this->i_next_pos == '"') {
this->i_state = state_t::NORMAL;
}
break;
}
if (!done) {
this->i_next_pos += 1;
}
}
}
iterator& operator++()
{
const auto& ss = this->i_parent;
this->i_pos = this->i_next_pos;
while (this->i_pos < (ss.ss_str + ss.ss_len)
&& isspace(*this->i_pos))
{
this->i_pos += 1;
this->i_next_pos += 1;
}
this->update();
this->i_index += 1;
return *this;
}
string_fragment operator*()
{
const auto& ss = this->i_parent;
int end = this->i_next_pos - ss.ss_str;
return string_fragment(ss.ss_str, this->i_pos - ss.ss_str, end);
}
bool operator==(const iterator& other) const
{
return (&this->i_parent == &other.i_parent)
&& (this->i_pos == other.i_pos);
}
bool operator!=(const iterator& other) const
{
return !(*this == other);
}
size_t index() const { return this->i_index; }
};
iterator begin() { return {*this, this->ss_str}; }
iterator end() { return {*this, this->ss_str + this->ss_len}; }
};
class w3c_log_format : public log_format {
public:
struct field_def {
const intern_string_t fd_name;
logline_value_meta fd_meta;
std::string fd_collator;
nonstd::optional<size_t> fd_numeric_index;
explicit field_def(const intern_string_t name)
: fd_name(name), fd_meta(intern_string::lookup(sql_safe_ident(
name.to_string_fragment())),
value_kind_t::VALUE_TEXT)
{
}
field_def(const intern_string_t name, logline_value_meta meta)
: fd_name(name), fd_meta(meta)
{
}
field_def(int col,
const char* name,
value_kind_t kind,
bool ident = false,
std::string coll = "")
: fd_name(intern_string::lookup(name)),
fd_meta(
intern_string::lookup(sql_safe_ident(string_fragment(name))),
kind,
col),
fd_collator(std::move(coll))
{
this->fd_meta.lvm_identifier = ident;
}
field_def& with_kind(value_kind_t kind,
bool identifier = false,
const std::string& collator = "")
{
this->fd_meta.lvm_kind = kind;
this->fd_meta.lvm_identifier = identifier;
this->fd_collator = collator;
return *this;
}
field_def& with_numeric_index(int index)
{
this->fd_numeric_index = index;
return *this;
}
};
struct field_to_struct_t {
field_to_struct_t(const char* prefix, const char* struct_name)
: fs_prefix(prefix),
fs_struct_name(intern_string::lookup(struct_name))
{
}
const char* fs_prefix;
intern_string_t fs_struct_name;
};
static const std::vector<field_def> KNOWN_FIELDS;
const static std::vector<field_to_struct_t> KNOWN_STRUCT_FIELDS;
w3c_log_format()
{
this->lf_is_self_describing = true;
this->lf_time_ordered = false;
}
const intern_string_t get_name() const override
{
static const intern_string_t name(intern_string::lookup("w3c"));
return this->wlf_format_name.empty() ? name : this->wlf_format_name;
}
void clear() override
{
this->log_format::clear();
this->wlf_time_scanner.clear();
this->wlf_format_name.clear();
this->wlf_field_defs.clear();
}
scan_result_t scan_int(std::vector<logline>& dst,
const line_info& li,
shared_buffer_ref& sbr)
{
static const intern_string_t F_DATE = intern_string::lookup("date");
static const intern_string_t F_DATE_LOCAL
= intern_string::lookup("date-local");
static const intern_string_t F_DATE_UTC
= intern_string::lookup("date-UTC");
static const intern_string_t F_TIME = intern_string::lookup("time");
static const intern_string_t F_TIME_LOCAL
= intern_string::lookup("time-local");
static const intern_string_t F_TIME_UTC
= intern_string::lookup("time-UTC");
static const intern_string_t F_STATUS_CODE
= intern_string::lookup("sc-status");
ws_separated_string ss(sbr.get_data(), sbr.length());
struct timeval date_tv {
0, 0
}, time_tv{0, 0};
struct exttm date_tm, time_tm;
bool found_date = false, found_time = false;
log_level_t level = LEVEL_INFO;
for (auto iter = ss.begin(); iter != ss.end(); ++iter) {
if (iter.index() >= this->wlf_field_defs.size()) {
level = LEVEL_INVALID;
break;
}
const field_def& fd = this->wlf_field_defs[iter.index()];
string_fragment sf = *iter;
if (sf.startswith("#")) {
if (sf == "#Date:") {
auto sbr_sf_opt
= sbr.to_string_fragment().consume_n(sf.length());