nextcloud-desktop/csync/src/csync_misc.c
2014-02-27 13:55:34 +01:00

263 lines
7.3 KiB
C

/*
* libcsync -- a library to sync a directory with another
*
* Copyright (c) 2008-2013 by Andreas Schneider <asn@cryptomilk.org>
* Copyright (c) 2012-2013 by Klaas Freitag <freitag@owncloud.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "config_csync.h"
#ifndef _GNU_SOURCE
#define _GNU_SOURCE
#endif
#include <limits.h>
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include <sys/types.h>
#include <errno.h>
#if _WIN32
# ifndef _WIN32_IE
# define _WIN32_IE 0x0501 // SHGetSpecialFolderPath
# endif
# include <shlobj.h>
#else /* _WIN32 */
# include <pwd.h>
# include <unistd.h>
#endif /* _WIN32 */
#include "c_lib.h"
#include "csync_misc.h"
#include "csync_macros.h"
#include "csync_log.h"
#ifdef _WIN32
char *csync_get_user_home_dir(void) {
wchar_t tmp[MAX_PATH];
char *szPath = NULL;
if( SHGetFolderPathW( NULL,
CSIDL_PROFILE|CSIDL_FLAG_CREATE,
NULL,
0,
tmp) == S_OK ) {
szPath = c_utf8_from_locale(tmp);
return szPath;
}
return NULL;
}
#else /* ************* !WIN32 ************ */
#ifndef NSS_BUFLEN_PASSWD
#define NSS_BUFLEN_PASSWD 4096
#endif /* NSS_BUFLEN_PASSWD */
char *csync_get_user_home_dir(void) {
const char *envp;
struct passwd pwd;
struct passwd *pwdbuf;
char buf[NSS_BUFLEN_PASSWD];
int rc;
envp = getenv("HOME");
if (envp != NULL && envp[0] != '\0') {
return c_strdup(envp);
}
/* Still nothing found, read the password file */
rc = getpwuid_r(getuid(), &pwd, buf, NSS_BUFLEN_PASSWD, &pwdbuf);
if (rc != 0) {
return c_strdup(pwd.pw_dir);
}
return NULL;
}
#endif /* ************* WIN32 ************ */
#ifdef HAVE_FNMATCH
#include <fnmatch.h>
int csync_fnmatch(__const char *__pattern, __const char *__name, int __flags) {
return fnmatch(__pattern, __name, __flags);
}
#else /* HAVE_FNMATCH */
#include <shlwapi.h>
int csync_fnmatch(__const char *__pattern, __const char *__name, int __flags) {
wchar_t *pat = NULL;
wchar_t *name = NULL;
BOOL match;
(void) __flags;
name = c_utf8_to_locale(__name);
pat = c_utf8_to_locale(__pattern);
match = PathMatchSpec(name, pat);
c_free_locale_string(pat);
c_free_locale_string(name);
if(match)
return 0;
else
return 1;
}
#endif /* HAVE_FNMATCH */
CSYNC_STATUS csync_errno_to_status(int error, CSYNC_STATUS default_status)
{
CSYNC_STATUS status = CSYNC_STATUS_OK;
switch (error) {
case 0:
status = CSYNC_STATUS_OK;
break;
/* The custom errnos first. */
case ERRNO_GENERAL_ERROR:
status = CSYNC_STATUS_UNSUCCESSFUL;
break;
case ERRNO_LOOKUP_ERROR: /* In Neon: Server or proxy hostname lookup failed */
status = CSYNC_STATUS_LOOKUP_ERROR;
break;
case ERRNO_USER_UNKNOWN_ON_SERVER: /* Neon: User authentication on server failed. */
status = CSYNC_STATUS_SERVER_AUTH_ERROR;
break;
case ERRNO_PROXY_AUTH:
status = CSYNC_STATUS_PROXY_AUTH_ERROR; /* Neon: User authentication on proxy failed */
break;
case ERRNO_CONNECT:
status = CSYNC_STATUS_CONNECT_ERROR; /* Network: Connection error */
break;
case ERRNO_TIMEOUT:
status = CSYNC_STATUS_TIMEOUT; /* Network: Timeout error */
break;
case ERRNO_QUOTA_EXCEEDED:
status = CSYNC_STATUS_QUOTA_EXCEEDED; /* Quota exceeded */
break;
case ERRNO_SERVICE_UNAVAILABLE:
status = CSYNC_STATUS_SERVICE_UNAVAILABLE; /* Service temporarily down */
break;
case EFBIG:
status = CSYNC_STATUS_FILE_SIZE_ERROR; /* File larger than 2MB */
break;
case ERRNO_PRECONDITION:
case ERRNO_RETRY:
case ERRNO_REDIRECT:
case ERRNO_WRONG_CONTENT:
status = CSYNC_STATUS_HTTP_ERROR;
break;
case ERRNO_TIMEDELTA:
status = CSYNC_STATUS_TIMESKEW;
break;
case EPERM: /* Operation not permitted */
case EACCES: /* Permission denied */
status = CSYNC_STATUS_PERMISSION_DENIED;
break;
case ENOENT: /* No such file or directory */
status = CSYNC_STATUS_NOT_FOUND;
break;
case EAGAIN: /* Try again */
status = CSYNC_STATUS_TIMEOUT;
break;
case EEXIST: /* File exists */
status = CSYNC_STATUS_FILE_EXISTS;
break;
case EINVAL:
status = CSYNC_STATUS_PARAM_ERROR;
break;
case ENOSPC:
status = CSYNC_STATUS_OUT_OF_SPACE;
break;
/* All the remaining basic errnos: */
case EIO: /* I/O error */
case ESRCH: /* No such process */
case EINTR: /* Interrupted system call */
case ENXIO: /* No such device or address */
case E2BIG: /* Argument list too long */
case ENOEXEC: /* Exec format error */
case EBADF: /* Bad file number */
case ECHILD: /* No child processes */
case ENOMEM: /* Out of memory */
case EFAULT: /* Bad address */
#ifndef _WIN32
case ENOTBLK: /* Block device required */
#endif
case EBUSY: /* Device or resource busy */
case EXDEV: /* Cross-device link */
case ENODEV: /* No such device */
case ENOTDIR: /* Not a directory */
case EISDIR: /* Is a directory */
case ENFILE: /* File table overflow */
case EMFILE: /* Too many open files */
case ENOTTY: /* Not a typewriter */
#ifndef _WIN32
case ETXTBSY: /* Text file busy */
#endif
case ESPIPE: /* Illegal seek */
case EROFS: /* Read-only file system */
case EMLINK: /* Too many links */
case EPIPE: /* Broken pipe */
case ERRNO_ERROR_STRING:
default:
status = default_status;
}
return status;
}
/* Remove possible quotes, and also the -gzip at the end
* Remove "-gzip" at the end (cf. https://github.com/owncloud/mirall/issues/1195)
* The caller must take ownership of the resulting string.
*/
char *csync_normalize_etag(const char *etag)
{
int len = 0;
char *buf = NULL;
if (!etag)
return NULL;
len = strlen(etag);
/* strip "XXXX-gzip" */
if(len >= 7 && etag[0] == '"' && c_streq(etag + len - 6, "-gzip\"")) {
etag++;
len -= 7;
}
/* strip leading -gzip */
if(len >= 5 && c_streq(etag + len - 5, "-gzip")) {
len -= 5;
}
/* strip normal quotes */
if (etag[0] == '"' && etag[len-1] == '"') {
etag++;
len -= 2;
}
buf = c_malloc( len+1 );
strncpy( buf, etag, len );
buf[len] = '\0';
return buf;
}