72069d8526
Otherwise source domain can modify (append) the file while the user already is accessing it. While incoming files should be treated as untrusted, this problem could allow file modification after the user makes some sanity checks.
83 lines
2.4 KiB
C
83 lines
2.4 KiB
C
/*
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* The Qubes OS Project, http://www.qubes-os.org
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*
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* Copyright (C) 2010 Rafal Wojtczuk <rafal@invisiblethingslab.com>
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* Copyright (C) 2013 Marek Marczykowski <marmarek@invisiblethingslab.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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*/
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#ifndef _LIBQUBES_RPC_FILECOPY_H
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#define _LIBQUBES_RPC_FILECOPY_H
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#define FILECOPY_VMNAME_SIZE 32
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#define PROGRESS_NOTIFY_DELTA (15*1000*1000)
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#define MAX_PATH_LENGTH 16384
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#define LEGAL_EOF 31415926
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#include <stdint.h>
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struct file_header {
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unsigned int namelen;
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unsigned int mode;
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unsigned long long filelen;
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unsigned int atime;
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unsigned int atime_nsec;
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unsigned int mtime;
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unsigned int mtime_nsec;
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};
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struct result_header {
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uint32_t error_code;
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uint32_t _pad;
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uint64_t crc32;
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} __attribute__((packed));
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/* optional info about last processed file */
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struct result_header_ext {
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uint32_t last_namelen;
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char last_name[0];
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} __attribute__((packed));
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enum {
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COPY_FILE_OK,
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COPY_FILE_READ_EOF,
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COPY_FILE_READ_ERROR,
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COPY_FILE_WRITE_ERROR
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};
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typedef void (notify_progress_t)(int, int);
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void register_notify_progress(notify_progress_t *func);
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int copy_file(int outfd, int infd, long long size, unsigned long *crc32);
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const char *copy_file_status_to_str(int status);
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void set_size_limit(unsigned long long new_bytes_limit, unsigned long long new_files_limit);
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void set_verbose(int value);
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/* register open fd to /proc/PID/fd of this process */
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void set_procfs_fd(int value);
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int write_all(int fd, const void *buf, int size);
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int read_all(int fd, void *buf, int size);
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int copy_fd_all(int fdout, int fdin);
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void set_nonblock(int fd);
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void set_block(int fd);
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extern unsigned long Crc32_ComputeBuf( unsigned long inCrc32, const void *buf,
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size_t bufLen );
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extern int do_unpack(void);
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#endif /* _LIBQUBES_RPC_FILECOPY_H */
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