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/*
* Copyright 2013 Samsung Electronics Co., Ltd
*
* Licensed under the Flora License, Version 1.1 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://floralicense.org/license/
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <unistd.h>
#include <libgen.h>
#include <sys/types.h>
#include <sys/ioctl.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <Eina.h>
#include <dlog.h>
#include <livebox-errno.h>
#include "util.h"
#include "debug.h"
#include "conf.h"
int errno;
static struct info {
Eina_List *info_list;
} s_info = {
.info_list = NULL,
};
struct liveinfo {
FILE *fp;
char fifo_name[60];
pid_t pid;
int handle;
};
HAPI int liveinfo_init(void)
{
return 0;
}
HAPI void liveinfo_fini(void)
{
struct liveinfo *info;
EINA_LIST_FREE(s_info.info_list, info) {
if (fclose(info->fp) != 0) {
ErrPrint("fclose: %s\n", strerror(errno));
}
if (unlink(info->fifo_name) < 0) {
ErrPrint("unlink: %s\n", strerror(errno));
}
DbgFree(info);
}
}
static inline int valid_requestor(pid_t pid)
{
char cmdline[60]; /* strlen("/proc/%d/cmdline") + 30 */
struct stat target;
struct stat src;
snprintf(cmdline, sizeof(cmdline), "/proc/%d/exe", pid);
DbgPrint("Open cmdline: %s (%d)\n", cmdline, pid);
if (stat(cmdline, &target) < 0) {
ErrPrint("Error: %s\n", strerror(errno));
return 0;
}
if (stat("/opt/usr/devel/usr/bin/liveinfo", &src) < 0) {
ErrPrint("Error: %s\n", strerror(errno));
return 0;
}
return target.st_ino == src.st_ino;
}
HAPI struct liveinfo *liveinfo_create(pid_t pid, int handle)
{
struct liveinfo *info;
if (!valid_requestor(pid)) {
ErrPrint("Invalid requestor\n");
return NULL;
}
info = calloc(1, sizeof(*info));
if (!info) {
ErrPrint("Heap: %s\n", strerror(errno));
return NULL;
}
snprintf(info->fifo_name, sizeof(info->fifo_name), "/tmp/.live_info.%lf", util_timestamp());
if (mkfifo(info->fifo_name, 0644) < 0) {
ErrPrint("mkfifo: %s\n", strerror(errno));
if (unlink(info->fifo_name) < 0) {
ErrPrint("unlink: %s\n", strerror(errno));
}
DbgFree(info);
return NULL;
}
info->fp = NULL;
info->pid = pid;
info->handle = handle;
DbgPrint("Live info is successfully created\n");
s_info.info_list = eina_list_append(s_info.info_list, info);
return info;
}
HAPI int liveinfo_open_fifo(struct liveinfo *info)
{
DbgPrint("FIFO is created (%s)\n", info->fifo_name);
info->fp = fopen(info->fifo_name, "w");
if (!info->fp) {
ErrPrint("open: %s\n", strerror(errno));
return LB_STATUS_ERROR_IO;
}
return LB_STATUS_SUCCESS;
}
HAPI void liveinfo_close_fifo(struct liveinfo *info)
{
if (info->fp) {
if (fclose(info->fp) != 0) {
ErrPrint("fclose: %s\n", strerror(errno));
}
info->fp = NULL;
}
}
HAPI void liveinfo_destroy(struct liveinfo *info)
{
s_info.info_list = eina_list_remove(s_info.info_list, info);
liveinfo_close_fifo(info);
if (unlink(info->fifo_name) < 0) {
ErrPrint("unlink: %s\n", strerror(errno));
}
DbgFree(info);
}
HAPI pid_t liveinfo_pid(struct liveinfo *info)
{
return info ? info->pid : (pid_t)-1;
}
HAPI const char *liveinfo_filename(struct liveinfo *info)
{
return info ? info->fifo_name : NULL;
}
HAPI FILE *liveinfo_fifo(struct liveinfo *info)
{
return info ? info->fp : NULL;
}
HAPI struct liveinfo *liveinfo_find_by_pid(pid_t pid)
{
Eina_List *l;
struct liveinfo *info;
EINA_LIST_FOREACH(s_info.info_list, l, info) {
if (info->pid == pid) {
return info;
}
}
return NULL;
}
HAPI struct liveinfo *liveinfo_find_by_handle(int handle)
{
Eina_List *l;
struct liveinfo *info;
EINA_LIST_FOREACH(s_info.info_list, l, info) {
if (info->handle == handle) {
return info;
}
}
return NULL;
}
/* End of a file */
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