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/*
* rharchive
*
* rharchive is a simple tcp connection proxy which combines the
* features of rinetd and 6tunnel. rharchive supports IPv4 and
* IPv6 and also supports connections from IPv6 to IPv4
* endpoints and vice versa.
*
*
* Copyright (C) 2010-2011 Christian Pointner <equinox@helsinki.at>
*
* This file is part of rharchive.
*
* rharchive is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* any later version.
*
* rharchive is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with rharchive. If not, see <http://www.gnu.org/licenses/>.
*/
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include <time.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <errno.h>
#include <glib.h>
#include "datatypes.h"
#include "file_list.h"
#include "slist.h"
#include "log.h"
static void delete_file(void* element)
{
file_t* deletee = (file_t*)element;
log_printf(INFO, "removing/closing file '%s' -> %d", deletee->path_, deletee->fd_);
if(deletee->path_) free(deletee->path_);
if(deletee->fd_ >= 0) close(deletee->fd_);
}
int file_list_init(file_list_t* list)
{
list->mutex_ = g_mutex_new();
if(!list->mutex_)
return -2;
return slist_init(&(list->list_), &delete_file);
}
void file_list_clear(file_list_t* list)
{
g_mutex_lock(list->mutex_);
slist_clear(&(list->list_));
g_mutex_unlock(list->mutex_);
}
file_t* file_list_add(file_list_t* list, struct tm* time, const char* type, const char* format, const char* dir, mode_t mode)
{
if(!list || !(list->mutex_))
return NULL;
file_t* tmp = malloc(sizeof(file_t));
if(!tmp)
return NULL;
log_printf(INFO, "%s time: %02d:%02d:%02d on %d.%d.%d", type, time->tm_hour, time->tm_min, time->tm_sec, time->tm_mday, time->tm_mon+1, time->tm_year+1900);
char name[256];
strftime(name, sizeof(name), format, time);
asprintf(&(tmp->path_), "%s/%s", dir, name);
if(!tmp->path_) {
free(tmp);
return NULL;
}
log_printf(INFO, "%s filename is: %s(.?)", type, tmp->path_);
tmp->fd_ = FILE_CLOSED;
tmp->mode_ = mode;
g_mutex_lock(list->mutex_);
if(slist_add(&(list->list_), tmp) == NULL) {
g_mutex_unlock(list->mutex_);
free(tmp->path_);
free(tmp);
return NULL;
}
g_mutex_unlock(list->mutex_);
return tmp;
}
int file_list_remove(file_list_t* list, int fd)
{
if(!list || !(list->mutex_))
return -1;
g_mutex_lock(list->mutex_);
slist_element_t* tmp = list->list_.first_;
while(tmp) {
if(((file_t*)tmp->data_)->fd_ == fd) {
slist_remove(&(list->list_), tmp->data_);
break;
}
tmp = tmp->next_;
}
g_mutex_unlock(list->mutex_);
return 0;
}
int file_list_call_post_process(file_list_t* list, int fd)
{
if(!list || !(list->mutex_))
return -1;
g_mutex_lock(list->mutex_);
slist_element_t* tmp = list->list_.first_;
while(tmp) {
if(((file_t*)tmp->data_)->fd_ == fd) {
log_printf(INFO, "calling post processing for '%s'", ((file_t*)tmp->data_)->path_);
close(((file_t*)tmp->data_)->fd_);
((file_t*)tmp->data_)->fd_ = FILE_POST_PROCESS;
// ((file_t*)tmp->data_)->pp_pid_ = ...
break;
}
tmp = tmp->next_;
}
g_mutex_unlock(list->mutex_);
return 0;
}
int file_list_waitpid(file_list_t* list)
{
if(!list || !(list->mutex_))
return -1;
g_mutex_lock(list->mutex_);
slist_element_t* tmp = list->list_.first_;
while(tmp) {
if(((file_t*)tmp->data_)->fd_ == FILE_POST_PROCESS) {
// int status;
// int ret = waitpid(((file_t*)tmp->data_)->pp_pid_, &status, WHOHANG);
// ...
slist_remove(&(list->list_), tmp->data_);
}
tmp = tmp->next_;
}
g_mutex_unlock(list->mutex_);
return 0;
}
int open_file(file_t* file)
{
if(!file || file->fd_ != FILE_CLOSED) // file already open!
return -1;
char* orig_path = file->path_;
int cnt = 0;
do {
file->fd_ = open(file->path_, O_WRONLY | O_CREAT | O_EXCL, file->mode_);
if(file->fd_ < 0) {
if(errno != EEXIST) {
// TODO: thread safe strerror
log_printf(ERROR, "can't open file '%s': %s", file->path_, strerror(errno));
if(orig_path != file->path_)
free(orig_path);
file->fd_ = FILE_CLOSED;
return -1;
}
cnt++;
char* tmp;
asprintf(&tmp, "%s.%d", orig_path, cnt);
if(!tmp) {
if(orig_path != file->path_)
free(orig_path);
return -2;
}
if(file->path_ != orig_path)
free(file->path_);
file->path_ = tmp;
}
fchmod(file->fd_, file->mode_);
}
while(file->fd_ < 0);
if(orig_path != file->path_)
free(orig_path);
log_printf(INFO, "opened file '%s' -> %d", file->path_, file->fd_);
return 0;
}
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