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/*
* Copyright (c) 2014-2016 DeNA Co., Ltd., Kazuho Oku
*
* 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:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* 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.
*/
#include <errno.h>
#include <fcntl.h>
#include <inttypes.h>
#include <netdb.h>
#include <netinet/in.h>
#include <spawn.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/socket.h>
#include <sys/types.h>
#include "h2o.h"
#include "h2o/serverutil.h"
struct st_h2o_access_log_filehandle_t {
h2o_logconf_t *logconf;
int fd;
};
struct st_h2o_access_logger_t {
h2o_logger_t super;
h2o_access_log_filehandle_t *fh;
};
static void log_access(h2o_logger_t *_self, h2o_req_t *req)
{
struct st_h2o_access_logger_t *self = (struct st_h2o_access_logger_t *)_self;
h2o_access_log_filehandle_t *fh = self->fh;
char *logline, buf[4096];
size_t len;
/* stringify */
len = sizeof(buf);
logline = h2o_log_request(fh->logconf, req, &len, buf);
/* emit */
write(fh->fd, logline, len);
/* free memory */
if (logline != buf)
free(logline);
}
static void on_dispose_handle(void *_fh)
{
h2o_access_log_filehandle_t *fh = _fh;
h2o_logconf_dispose(fh->logconf);
close(fh->fd);
}
int h2o_access_log_open_log(const char *path)
{
int fd;
if (path[0] == '|') {
int pipefds[2];
pid_t pid;
char *argv[4] = {"/bin/sh", "-c", (char *)(path + 1), NULL};
/* create pipe */
if (pipe(pipefds) != 0) {
perror("pipe failed");
return -1;
}
if (fcntl(pipefds[1], F_SETFD, FD_CLOEXEC) == -1) {
perror("failed to set FD_CLOEXEC on pipefds[1]");
return -1;
}
/* spawn the logger */
int mapped_fds[] = {pipefds[0], 0, /* map pipefds[0] to stdin */
-1};
if ((pid = h2o_spawnp(argv[0], argv, mapped_fds, 0)) == -1) {
fprintf(stderr, "failed to open logger: %s:%s\n", path + 1, strerror(errno));
return -1;
}
/* close the read side of the pipefds and return the write side */
close(pipefds[0]);
fd = pipefds[1];
} else {
if ((fd = open(path, O_CREAT | O_WRONLY | O_APPEND | O_CLOEXEC, 0644)) == -1) {
fprintf(stderr, "failed to open log file:%s:%s\n", path, strerror(errno));
return -1;
}
}
return fd;
}
h2o_access_log_filehandle_t *h2o_access_log_open_handle(const char *path, const char *fmt, int escape)
{
h2o_logconf_t *logconf;
int fd;
h2o_access_log_filehandle_t *fh;
char errbuf[256];
/* default to combined log format */
if (fmt == NULL)
fmt = "%h %l %u %t \"%r\" %s %b \"%{Referer}i\" \"%{User-agent}i\"";
if ((logconf = h2o_logconf_compile(fmt, escape, errbuf)) == NULL) {
fprintf(stderr, "%s\n", errbuf);
return NULL;
}
/* open log file */
if ((fd = h2o_access_log_open_log(path)) == -1) {
h2o_logconf_dispose(logconf);
return NULL;
}
fh = h2o_mem_alloc_shared(NULL, sizeof(*fh), on_dispose_handle);
fh->logconf = logconf;
fh->fd = fd;
return fh;
}
static void dispose(h2o_logger_t *_self)
{
struct st_h2o_access_logger_t *self = (void *)_self;
h2o_mem_release_shared(self->fh);
}
h2o_logger_t *h2o_access_log_register(h2o_pathconf_t *pathconf, h2o_access_log_filehandle_t *fh)
{
struct st_h2o_access_logger_t *self = (void *)h2o_create_logger(pathconf, sizeof(*self));
self->super.dispose = dispose;
self->super.log_access = log_access;
self->fh = fh;
h2o_mem_addref_shared(fh);
return &self->super;
}
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