344 lines
9.2 KiB
C++
344 lines
9.2 KiB
C++
/*
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* nghttp2 - HTTP/2 C Library
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*
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* Copyright (c) 2012 Tatsuhiro Tsujikawa
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include "shrpx_log.h"
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#ifdef HAVE_SYSLOG_H
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#include <syslog.h>
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#endif // HAVE_SYSLOG_H
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif // HAVE_UNISTD_H
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#ifdef HAVE_INTTYPES_H
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#include <inttypes.h>
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#endif // HAVE_INTTYPES_H
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#include <cerrno>
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#include <cstdio>
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#include <cstring>
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#include <ctime>
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#include <iostream>
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#include <iomanip>
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#include "shrpx_config.h"
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#include "shrpx_downstream.h"
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#include "util.h"
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#include "template.h"
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using namespace nghttp2;
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namespace shrpx {
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namespace {
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const char *SEVERITY_STR[] = {"INFO", "NOTICE", "WARN", "ERROR", "FATAL"};
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} // namespace
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namespace {
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const char *SEVERITY_COLOR[] = {
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"\033[1;32m", // INFO
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"\033[1;36m", // NOTICE
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"\033[1;33m", // WARN
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"\033[1;31m", // ERROR
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"\033[1;35m", // FATAL
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};
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} // namespace
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int Log::severity_thres_ = NOTICE;
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void Log::set_severity_level(int severity) { severity_thres_ = severity; }
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int Log::set_severity_level_by_name(const char *name) {
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for (size_t i = 0, max = array_size(SEVERITY_STR); i < max; ++i) {
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if (strcmp(SEVERITY_STR[i], name) == 0) {
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severity_thres_ = i;
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return 0;
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}
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}
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return -1;
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}
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int severity_to_syslog_level(int severity) {
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switch (severity) {
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case (INFO):
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return LOG_INFO;
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case (NOTICE):
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return LOG_NOTICE;
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case (WARN):
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return LOG_WARNING;
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case (ERROR):
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return LOG_ERR;
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case (FATAL):
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return LOG_CRIT;
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default:
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return -1;
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}
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}
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Log::Log(int severity, const char *filename, int linenum)
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: filename_(filename), severity_(severity), linenum_(linenum) {}
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Log::~Log() {
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int rv;
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if (!get_config()) {
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return;
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}
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auto lgconf = log_config();
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if (!log_enabled(severity_) ||
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(lgconf->errorlog_fd == -1 && !get_config()->errorlog_syslog)) {
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return;
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}
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if (get_config()->errorlog_syslog) {
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if (severity_ == NOTICE) {
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syslog(severity_to_syslog_level(severity_), "[%s] %s",
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SEVERITY_STR[severity_], stream_.str().c_str());
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} else {
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syslog(severity_to_syslog_level(severity_), "[%s] %s (%s:%d)",
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SEVERITY_STR[severity_], stream_.str().c_str(), filename_,
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linenum_);
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}
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return;
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}
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char buf[4096];
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auto tty = lgconf->errorlog_tty;
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lgconf->update_tstamp(std::chrono::system_clock::now());
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auto &time_local = lgconf->time_local_str;
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if (severity_ == NOTICE) {
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rv = snprintf(buf, sizeof(buf), "%s PID%d [%s%s%s] %s\n",
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time_local.c_str(), get_config()->pid,
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tty ? SEVERITY_COLOR[severity_] : "", SEVERITY_STR[severity_],
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tty ? "\033[0m" : "", stream_.str().c_str());
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} else {
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rv = snprintf(buf, sizeof(buf), "%s PID%d [%s%s%s] %s%s:%d%s %s\n",
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time_local.c_str(), get_config()->pid,
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tty ? SEVERITY_COLOR[severity_] : "", SEVERITY_STR[severity_],
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tty ? "\033[0m" : "", tty ? "\033[1;30m" : "", filename_,
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linenum_, tty ? "\033[0m" : "", stream_.str().c_str());
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}
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if (rv < 0) {
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return;
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}
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auto nwrite = std::min(static_cast<size_t>(rv), sizeof(buf) - 1);
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while (write(lgconf->errorlog_fd, buf, nwrite) == -1 && errno == EINTR)
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;
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}
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namespace {
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template <typename OutputIterator>
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std::pair<OutputIterator, size_t> copy(const char *src, size_t avail,
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OutputIterator oitr) {
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auto nwrite = std::min(strlen(src), avail);
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auto noitr = std::copy_n(src, nwrite, oitr);
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return std::make_pair(noitr, avail - nwrite);
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}
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} // namespace
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void upstream_accesslog(const std::vector<LogFragment> &lfv,
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const LogSpec &lgsp) {
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auto lgconf = log_config();
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if (lgconf->accesslog_fd == -1 && !get_config()->accesslog_syslog) {
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return;
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}
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char buf[4096];
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auto downstream = lgsp.downstream;
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auto p = buf;
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auto avail = sizeof(buf) - 2;
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lgconf->update_tstamp(lgsp.time_now);
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auto &time_local = lgconf->time_local_str;
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auto &time_iso8601 = lgconf->time_iso8601_str;
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for (auto &lf : lfv) {
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switch (lf.type) {
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case SHRPX_LOGF_LITERAL:
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std::tie(p, avail) = copy(lf.value.get(), avail, p);
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break;
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case SHRPX_LOGF_REMOTE_ADDR:
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std::tie(p, avail) = copy(lgsp.remote_addr, avail, p);
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break;
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case SHRPX_LOGF_TIME_LOCAL:
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std::tie(p, avail) = copy(time_local.c_str(), avail, p);
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break;
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case SHRPX_LOGF_TIME_ISO8601:
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std::tie(p, avail) = copy(time_iso8601.c_str(), avail, p);
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break;
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case SHRPX_LOGF_REQUEST:
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std::tie(p, avail) = copy(lgsp.method, avail, p);
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std::tie(p, avail) = copy(" ", avail, p);
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std::tie(p, avail) = copy(lgsp.path, avail, p);
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std::tie(p, avail) = copy(" HTTP/", avail, p);
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std::tie(p, avail) = copy(util::utos(lgsp.major).c_str(), avail, p);
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if (lgsp.major < 2) {
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std::tie(p, avail) = copy(".", avail, p);
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std::tie(p, avail) = copy(util::utos(lgsp.minor).c_str(), avail, p);
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}
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break;
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case SHRPX_LOGF_STATUS:
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std::tie(p, avail) = copy(util::utos(lgsp.status).c_str(), avail, p);
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break;
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case SHRPX_LOGF_BODY_BYTES_SENT:
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std::tie(p, avail) =
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copy(util::utos(lgsp.body_bytes_sent).c_str(), avail, p);
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break;
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case SHRPX_LOGF_HTTP:
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if (downstream) {
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auto hd = downstream->get_request_header(lf.value.get());
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if (hd) {
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std::tie(p, avail) = copy((*hd).value.c_str(), avail, p);
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break;
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}
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}
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std::tie(p, avail) = copy("-", avail, p);
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break;
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case SHRPX_LOGF_REMOTE_PORT:
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std::tie(p, avail) = copy(lgsp.remote_port, avail, p);
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break;
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case SHRPX_LOGF_SERVER_PORT:
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std::tie(p, avail) = copy(util::utos(lgsp.server_port).c_str(), avail, p);
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break;
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case SHRPX_LOGF_REQUEST_TIME: {
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auto t = std::chrono::duration_cast<std::chrono::milliseconds>(
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lgsp.request_end_time - lgsp.request_start_time).count();
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auto frac = util::utos(t % 1000);
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auto sec = util::utos(t / 1000);
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if (frac.size() < 3) {
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frac = std::string(3 - frac.size(), '0') + frac;
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}
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sec += ".";
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sec += frac;
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std::tie(p, avail) = copy(sec.c_str(), avail, p);
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} break;
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case SHRPX_LOGF_PID:
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std::tie(p, avail) = copy(util::utos(lgsp.pid).c_str(), avail, p);
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break;
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case SHRPX_LOGF_ALPN:
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std::tie(p, avail) = copy(lgsp.alpn, avail, p);
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break;
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case SHRPX_LOGF_NONE:
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break;
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default:
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break;
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}
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}
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*p = '\0';
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if (get_config()->accesslog_syslog) {
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syslog(LOG_INFO, "%s", buf);
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return;
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}
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*p++ = '\n';
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auto nwrite = p - buf;
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while (write(lgconf->accesslog_fd, buf, nwrite) == -1 && errno == EINTR)
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;
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}
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int reopen_log_files() {
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int res = 0;
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auto lgconf = log_config();
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if (lgconf->accesslog_fd != -1) {
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close(lgconf->accesslog_fd);
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lgconf->accesslog_fd = -1;
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}
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if (!get_config()->accesslog_syslog && get_config()->accesslog_file) {
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lgconf->accesslog_fd =
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util::reopen_log_file(get_config()->accesslog_file.get());
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if (lgconf->accesslog_fd == -1) {
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LOG(ERROR) << "Failed to open accesslog file "
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<< get_config()->accesslog_file.get();
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res = -1;
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}
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}
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int new_errorlog_fd = -1;
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if (!get_config()->errorlog_syslog && get_config()->errorlog_file) {
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new_errorlog_fd = util::reopen_log_file(get_config()->errorlog_file.get());
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if (new_errorlog_fd == -1) {
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if (lgconf->errorlog_fd != -1) {
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LOG(ERROR) << "Failed to open errorlog file "
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<< get_config()->errorlog_file.get();
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} else {
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std::cerr << "Failed to open errorlog file "
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<< get_config()->errorlog_file.get() << std::endl;
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}
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res = -1;
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}
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}
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if (lgconf->errorlog_fd != -1) {
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close(lgconf->errorlog_fd);
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lgconf->errorlog_fd = -1;
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lgconf->errorlog_tty = false;
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}
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if (new_errorlog_fd != -1) {
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lgconf->errorlog_fd = new_errorlog_fd;
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lgconf->errorlog_tty = isatty(lgconf->errorlog_fd);
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}
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return res;
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}
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void redirect_stderr_to_errorlog() {
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auto lgconf = log_config();
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if (get_config()->errorlog_syslog || lgconf->errorlog_fd == -1) {
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return;
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}
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dup2(lgconf->errorlog_fd, STDERR_FILENO);
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}
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} // namespace shrpx
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