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/* Copyright (c) 2002-2013 Pigeonhole authors, see the included COPYING file
*/
#include "lib.h"
#include "str.h"
#include "sieve.h"
#include "sieve-script.h"
#include "sieve-script-file.h"
#include "sieve-storage-private.h"
#include "sieve-storage-script.h"
#include "sieve-storage-quota.h"
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <dirent.h>
#include <sys/stat.h>
#include <unistd.h>
#include <fcntl.h>
bool sieve_storage_quota_validsize
(struct sieve_storage *storage, size_t size, uint64_t *limit_r)
{
uint64_t max_size;
max_size = sieve_max_script_size(storage->svinst);
if ( max_size > 0 && size > max_size ) {
*limit_r = max_size;
return FALSE;
}
return TRUE;
}
uint64_t sieve_storage_quota_max_script_size
(struct sieve_storage *storage)
{
return sieve_max_script_size(storage->svinst);
}
int sieve_storage_quota_havespace
(struct sieve_storage *storage, const char *scriptname, size_t size,
enum sieve_storage_quota *quota_r, uint64_t *limit_r)
{
struct dirent *dp;
DIR *dirp;
uint64_t script_count = 1;
uint64_t script_storage = size;
int result = 1;
*limit_r = 0;
*quota_r = SIEVE_STORAGE_QUOTA_NONE;
/* Check the script size */
if ( !sieve_storage_quota_validsize(storage, size, limit_r) ) {
*quota_r = SIEVE_STORAGE_QUOTA_MAXSIZE;
return 0;
}
/* Do we need to scan the storage (quota enabled) ? */
if ( storage->max_scripts == 0 && storage->max_storage == 0 ) {
return 1;
}
/* Open the directory */
if ( (dirp = opendir(storage->dir)) == NULL ) {
sieve_storage_set_critical
(storage, "quota: opendir(%s) failed: %m", storage->dir);
return -1;
}
/* Scan all files */
for (;;) {
const char *name;
bool replaced = FALSE;
/* Read next entry */
errno = 0;
if ( (dp = readdir(dirp)) == NULL ) {
if ( errno != 0 ) {
sieve_storage_set_critical
(storage, "quota: readdir(%s) failed: %m", storage->dir);
result = -1;
}
break;
}
/* Parse filename */
name = sieve_scriptfile_get_script_name(dp->d_name);
/* Ignore non-script files */
if ( name == NULL )
continue;
/* Don't list our active sieve script link if the link
* resides in the script dir (generally a bad idea).
*/
if ( *(storage->link_path) == '\0' &&
strcmp(storage->active_fname, dp->d_name) == 0 )
continue;
if ( strcmp(name, scriptname) == 0 )
replaced = TRUE;
/* Check cont quota if necessary */
if ( storage->max_scripts > 0 ) {
if ( !replaced ) {
script_count++;
if ( script_count > storage->max_scripts ) {
*quota_r = SIEVE_STORAGE_QUOTA_MAXSCRIPTS;
*limit_r = storage->max_scripts;
result = 0;
break;
}
}
}
/* Check storage quota if necessary */
if ( storage->max_storage > 0 ) {
const char *path;
struct stat st;
path = t_strconcat(storage->dir, "/", dp->d_name, NULL);
if ( stat(path, &st) < 0 ) {
i_warning
("sieve-storage: quota: stat(%s) failed: %m", path);
continue;
}
if ( !replaced ) {
script_storage += st.st_size;
if ( script_storage > storage->max_storage ) {
*quota_r = SIEVE_STORAGE_QUOTA_MAXSTORAGE;
*limit_r = storage->max_storage;
result = 0;
break;
}
}
}
}
/* Close directory */
if ( closedir(dirp) < 0 ) {
sieve_storage_set_critical
(storage, "quota: closedir(%s) failed: %m", storage->dir);
}
return result;
}
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