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/*
* Copyright (C) 2014-2020 Firejail Authors
*
* This file is part of firejail project
*
* This program 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 2 of the License, or
* (at your option) any later version.
*
* This program 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 this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef FIREJAIL_H
#define FIREJAIL_H
#include "../include/common.h"
#include "../include/euid_common.h"
#include "../include/rundefs.h"
#include <stdarg.h>
#include <sys/stat.h>
// debug restricted shell
//#define DEBUG_RESTRICTED_SHELL
// profiles
#define DEFAULT_USER_PROFILE "default"
#define DEFAULT_ROOT_PROFILE "server"
#define MAX_INCLUDE_LEVEL 16 // include levels in profile files
#define ASSERT_PERMS(file, uid, gid, mode) \
do { \
assert(file);\
struct stat s;\
if (stat(file, &s) == -1) errExit("stat");\
assert(s.st_uid == uid);\
assert(s.st_gid == gid);\
assert((s.st_mode & 07777) == (mode));\
} while (0)
#define ASSERT_PERMS_FD(fd, uid, gid, mode) \
do { \
struct stat s;\
if (fstat(fd, &s) == -1) errExit("fstat");\
assert(s.st_uid == uid);\
assert(s.st_gid == gid);\
assert((s.st_mode & 07777) == (mode));\
} while (0)
#define ASSERT_PERMS_STREAM(file, uid, gid, mode) \
do { \
int fd = fileno(file);\
if (fd == -1) errExit("fileno");\
ASSERT_PERMS_FD(fd, uid, gid, (mode));\
} while (0)
#define SET_PERMS_FD(fd, uid, gid, mode) \
do { \
if (fchmod(fd, (mode)) == -1) errExit("chmod");\
if (fchown(fd, uid, gid) == -1) errExit("chown");\
} while (0)
#define SET_PERMS_STREAM(stream, uid, gid, mode) \
do { \
int fd = fileno(stream);\
if (fd == -1) errExit("fileno");\
SET_PERMS_FD(fd, uid, gid, (mode));\
} while (0)
#define SET_PERMS_STREAM_NOERR(stream, uid, gid, mode) \
do { \
int fd = fileno(stream);\
if (fd == -1) continue;\
int rv = fchmod(fd, (mode));\
(void) rv;\
rv = fchown(fd, uid, gid);\
(void) rv;\
} while (0)
// main.c
typedef struct bridge_t {
// on the host
char *dev; // interface device name: bridge or regular ethernet
uint32_t ip; // interface device IP address
uint32_t mask; // interface device mask
uint8_t mac[6]; // interface mac address
int mtu; // interface mtu
char *veth_name; // veth name for the device connected to the bridge
// inside the sandbox
char *devsandbox; // name of the device inside the sandbox
uint32_t ipsandbox; // ip address inside the sandbox
uint32_t masksandbox; // network mask inside the sandbox
char *ip6sandbox; // ipv6 address inside the sandbox
uint8_t macsandbox[6]; // mac address inside the sandbox
uint32_t iprange_start;// iprange arp scan start range
uint32_t iprange_end; // iprange arp scan end range
// flags
uint8_t arg_ip_none; // --ip=none
uint8_t arg_ip_dhcp;
uint8_t arg_ip6_dhcp;
uint8_t macvlan; // set by --net=eth0 (or eth1, ...); reset by --net=br0 (or br1, ...)
uint8_t configured;
uint8_t scan; // set by --scan
} Bridge;
typedef struct interface_t {
char *dev;
uint32_t ip;
uint32_t mask;
uint8_t mac[6];
int mtu;
uint8_t configured;
} Interface;
typedef struct profile_entry_t {
struct profile_entry_t *next;
char *data; // command
// whitelist command parameters
char *link; // link name - set if the file is a link
enum {
WLDIR_HOME = 1, // whitelist in home directory
WLDIR_TMP, // whitelist in /tmp directory
WLDIR_MEDIA, // whitelist in /media directory
WLDIR_MNT, // whitelist in /mnt directory
WLDIR_VAR, // whitelist in /var directory
WLDIR_DEV, // whitelist in /dev directory
WLDIR_OPT, // whitelist in /opt directory
WLDIR_SRV, // whitelist in /srv directory
WLDIR_ETC, // whitelist in /etc directory
WLDIR_SHARE, // whitelist in /usr/share directory
WLDIR_MODULE, // whitelist in /sys/module directory
WLDIR_RUN // whitelist in /run/user/$uid directory
} wldir;
} ProfileEntry;
typedef struct config_t {
// user data
char *username;
char *homedir;
// filesystem
ProfileEntry *profile;
#define MAX_PROFILE_IGNORE 32
char *profile_ignore[MAX_PROFILE_IGNORE];
char *chrootdir; // chroot directory
char *home_private; // private home directory
char *home_private_keep; // keep list for private home directory
char *etc_private_keep; // keep list for private etc directory
char *opt_private_keep; // keep list for private opt directory
char *srv_private_keep; // keep list for private srv directory
char *bin_private_keep; // keep list for private bin directory
char *bin_private_lib; // executable list sent by private-bin to private-lib
char *lib_private_keep; // keep list for private bin directory
char *cwd; // current working directory
char *overlay_dir;
// networking
char *name; // sandbox name
char *hostname; // host name
char *hosts_file; // hosts file to be installed in the sandbox
uint32_t defaultgw; // default gateway
Bridge bridge0;
Bridge bridge1;
Bridge bridge2;
Bridge bridge3;
Interface interface0;
Interface interface1;
Interface interface2;
Interface interface3;
char *dns1; // up to 4 IP (v4/v6) addresses for dns servers
char *dns2;
char *dns3;
char *dns4;
// seccomp
char *seccomp_list, *seccomp_list32; // optional seccomp list on top of default filter
char *seccomp_list_drop, *seccomp_list_drop32; // seccomp drop list
char *seccomp_list_keep, *seccomp_list_keep32; // seccomp keep list
char *protocol; // protocol list
char *seccomp_error_action; // error action: kill or errno
// rlimits
long long unsigned rlimit_cpu;
long long unsigned rlimit_nofile;
long long unsigned rlimit_nproc;
long long unsigned rlimit_fsize;
long long unsigned rlimit_sigpending;
long long unsigned rlimit_as;
unsigned timeout; // maximum time elapsed before killing the sandbox
// cpu affinity, nice and control groups
uint32_t cpus;
int nice;
char *cgroup;
// command line
char *command_line;
char *window_title;
char *command_name;
char *shell;
char **original_argv;
int original_argc;
int original_program_index;
} Config;
extern Config cfg;
static inline Bridge *last_bridge_configured(void) {
if (cfg.bridge3.configured)
return &cfg.bridge3;
else if (cfg.bridge2.configured)
return &cfg.bridge2;
else if (cfg.bridge1.configured)
return &cfg.bridge1;
else if (cfg.bridge0.configured)
return &cfg.bridge0;
else
return NULL;
}
static inline int any_bridge_configured(void) {
if (cfg.bridge0.configured || cfg.bridge1.configured || cfg.bridge2.configured || cfg.bridge3.configured)
return 1;
else
return 0;
}
static inline int any_interface_configured(void) {
if (cfg.interface0.configured || cfg.interface1.configured || cfg.interface2.configured || cfg.interface3.configured)
return 1;
else
return 0;
}
static inline int any_ip_dhcp(void) {
if (cfg.bridge0.arg_ip_dhcp || cfg.bridge1.arg_ip_dhcp || cfg.bridge2.arg_ip_dhcp || cfg.bridge3.arg_ip_dhcp)
return 1;
else
return 0;
}
static inline int any_ip6_dhcp(void) {
if (cfg.bridge0.arg_ip6_dhcp || cfg.bridge1.arg_ip6_dhcp || cfg.bridge2.arg_ip6_dhcp || cfg.bridge3.arg_ip6_dhcp)
return 1;
else
return 0;
}
static inline int any_dhcp(void) {
return any_ip_dhcp() || any_ip6_dhcp();
}
extern int arg_private; // mount private /home
extern int arg_private_cache; // private home/.cache
extern int arg_debug; // print debug messages
extern int arg_debug_blacklists; // print debug messages for blacklists
extern int arg_debug_whitelists; // print debug messages for whitelists
extern int arg_debug_private_lib; // print debug messages for private-lib
extern int arg_nonetwork; // --net=none
extern int arg_command; // -c
extern int arg_overlay; // overlay option
extern int arg_overlay_keep; // place overlay diff in a known directory
extern int arg_overlay_reuse; // allow the reuse of overlays
extern int arg_seccomp; // enable default seccomp filter
extern int arg_seccomp32; // enable default seccomp filter for 32 bit arch
extern int arg_seccomp_postexec; // need postexec ld.preload library?
extern int arg_seccomp_block_secondary; // block any secondary architectures
extern int arg_caps_default_filter; // enable default capabilities filter
extern int arg_caps_drop; // drop list
extern int arg_caps_drop_all; // drop all capabilities
extern int arg_caps_keep; // keep list
extern char *arg_caps_list; // optional caps list
extern int arg_trace; // syscall tracing support
extern char *arg_tracefile; // syscall tracing file
extern int arg_tracelog; // blacklist tracing support
extern int arg_rlimit_cpu; // rlimit cpu
extern int arg_rlimit_nofile; // rlimit nofile
extern int arg_rlimit_nproc; // rlimit nproc
extern int arg_rlimit_fsize; // rlimit fsize
extern int arg_rlimit_sigpending;// rlimit sigpending
extern int arg_rlimit_as; //rlimit as
extern int arg_nogroups; // disable supplementary groups
extern int arg_nonewprivs; // set the NO_NEW_PRIVS prctl
extern int arg_noroot; // create a new user namespace and disable root user
extern int arg_netfilter; // enable netfilter
extern int arg_netfilter6; // enable netfilter6
extern char *arg_netfilter_file; // netfilter file
extern char *arg_netfilter6_file; // netfilter file
extern char *arg_netns; // "ip netns"-created network namespace to use
extern int arg_doubledash; // double dash
extern int arg_shell_none; // run the program directly without a shell
extern int arg_private_dev; // private dev directory
extern int arg_keep_dev_shm; // preserve /dev/shm
extern int arg_private_etc; // private etc directory
extern int arg_private_opt; // private opt directory
extern int arg_private_srv; // private srv directory
extern int arg_private_bin; // private bin directory
extern int arg_private_tmp; // private tmp directory
extern int arg_private_lib; // private lib directory
extern int arg_private_cwd; // private working directory
extern int arg_scan; // arp-scan all interfaces
extern int arg_whitelist; // whitelist command
extern int arg_nosound; // disable sound
extern int arg_noautopulse; // disable automatic ~/.config/pulse init
extern int arg_novideo; //disable video devices in /dev
extern int arg_no3d; // disable 3d hardware acceleration
extern int arg_quiet; // no output for scripting
extern int arg_join_network; // join only the network namespace
extern int arg_join_filesystem; // join only the mount namespace
extern int arg_nice; // nice value configured
extern int arg_ipc; // enable ipc namespace
extern int arg_writable_etc; // writable etc
extern int arg_writable_var; // writable var
extern int arg_keep_var_tmp; // don't overwrite /var/tmp
extern int arg_writable_run_user; // writable /run/user
extern int arg_writable_var_log; // writable /var/log
extern int arg_appimage; // appimage
extern int arg_audit; // audit
extern char *arg_audit_prog; // audit
extern int arg_apparmor; // apparmor
extern int arg_allow_debuggers; // allow debuggers
extern int arg_x11_block; // block X11
extern int arg_x11_xorg; // use X11 security extension
extern int arg_allusers; // all user home directories visible
extern int arg_machineid; // preserve /etc/machine-id
extern int arg_disable_mnt; // disable /mnt and /media
extern int arg_noprofile; // use default.profile if none other found/specified
extern int arg_memory_deny_write_execute; // block writable and executable memory
extern int arg_notv; // --notv
extern int arg_nodvd; // --nodvd
extern int arg_nou2f; // --nou2f
extern int arg_deterministic_exit_code; // always exit with first child's exit status
typedef enum {
DBUS_POLICY_ALLOW, // Allow unrestricted access to the bus
DBUS_POLICY_FILTER, // Filter with xdg-dbus-proxy
DBUS_POLICY_BLOCK // Block access
} DbusPolicy;
extern DbusPolicy arg_dbus_user; // --dbus-user
extern DbusPolicy arg_dbus_system; // --dbus-system
extern int arg_dbus_log_user;
extern int arg_dbus_log_system;
extern const char *arg_dbus_log_file;
extern int login_shell;
extern int parent_to_child_fds[2];
extern int child_to_parent_fds[2];
extern pid_t sandbox_pid;
extern mode_t orig_umask;
extern unsigned long long start_timestamp;
#define MAX_ARGS 128 // maximum number of command arguments (argc)
#define MAX_ARG_LEN (PATH_MAX + 32) // --foobar=PATH
extern char *fullargv[MAX_ARGS];
extern int fullargc;
// main.c
void check_user_namespace(void);
char *guess_shell(void);
// sandbox.c
int sandbox(void* sandbox_arg);
void start_application(int no_sandbox, FILE *fp);
void set_apparmor(void);
// network_main.c
void net_configure_sandbox_ip(Bridge *br);
void net_configure_veth_pair(Bridge *br, const char *ifname, pid_t child);
void net_check_cfg(void);
void net_dns_print(pid_t pid);
void network_main(pid_t child);
void net_print(pid_t pid);
// network.c
int check_ip46_address(const char *addr);
void net_if_up(const char *ifname);
void net_if_down(const char *ifname);
void net_if_ip(const char *ifname, uint32_t ip, uint32_t mask, int mtu);
void net_if_ip6(const char *ifname, const char *addr6);
int net_get_if_addr(const char *bridge, uint32_t *ip, uint32_t *mask, uint8_t mac[6], int *mtu);
int net_add_route(uint32_t dest, uint32_t mask, uint32_t gw);
uint32_t network_get_defaultgw(void);
int net_config_mac(const char *ifname, const unsigned char mac[6]);
int net_get_mac(const char *ifname, unsigned char mac[6]);
void net_config_interface(const char *dev, uint32_t ip, uint32_t mask, int mtu);
// preproc.c
void preproc_build_firejail_dir(void);
void preproc_mount_mnt_dir(void);
void preproc_clean_run(void);
// fs.c
typedef enum {
BLACKLIST_FILE,
BLACKLIST_NOLOG,
MOUNT_READONLY,
MOUNT_TMPFS,
MOUNT_NOEXEC,
MOUNT_RDWR,
MOUNT_RDWR_NOCHECK, // no check of ownership
OPERATION_MAX
} OPERATION;
// blacklist files or directories by mounting empty files on top of them
void fs_blacklist(void);
// mount a writable tmpfs
void fs_tmpfs(const char *dir, unsigned check_owner);
// remount noexec/nodev/nosuid or read-only or read-write
void fs_remount(const char *dir, OPERATION op, int rec);
// mount /proc and /sys directories
void fs_proc_sys_dev_boot(void);
// blacklist firejail configuration and runtime directories
void disable_config(void);
// build a basic read-only filesystem
void fs_basic_fs(void);
// mount overlayfs on top of / directory
char *fs_check_overlay_dir(const char *subdirname, int allow_reuse);
void fs_overlayfs(void);
void fs_private_tmp(void);
void fs_private_cache(void);
void fs_mnt(const int enforce);
// chroot.c
// chroot into an existing directory; mount existing /dev and update /etc/resolv.conf
void fs_check_chroot_dir(void);
void fs_chroot(const char *rootdir);
// profile.c
// find and read the profile specified by name from dir directory
int profile_find_firejail(const char *name, int add_ext);
// read a profile file
void profile_read(const char *fname);
// check profile line; if line == 0, this was generated from a command line option
// return 1 if the command is to be added to the linked list of profile commands
// return 0 if the command was already executed inside the function
int profile_check_line(char *ptr, int lineno, const char *fname);
// add a profile entry in cfg.profile list; use str to populate the list
void profile_add(char *str);
void profile_add_ignore(const char *str);
// list.c
void list(void);
void tree(void);
void top(void);
void netstats(void);
// usage.c
void usage(void);
// join.c
void join(pid_t pid, int argc, char **argv, int index);
bool is_ready_for_join(const pid_t pid);
void check_join_permission(pid_t pid);
pid_t switch_to_child(pid_t pid);
// shutdown.c
void shut(pid_t pid);
// restricted_shell.c
int restricted_shell(const char *user);
// arp.c
void arp_announce(const char *dev, Bridge *br);
// returns 0 if the address is not in use, -1 otherwise
int arp_check(const char *dev, uint32_t destaddr);
// assign an IP address using arp scanning
uint32_t arp_assign(const char *dev, Bridge *br);
// macros.c
char *expand_macros(const char *path);
char *resolve_macro(const char *name);
void invalid_filename(const char *fname, int globbing);
int is_macro(const char *name);
int macro_id(const char *name);
// util.c
void errLogExit(char* fmt, ...);
void fwarning(char* fmt, ...);
void fmessage(char* fmt, ...);
void drop_privs(int nogroups);
int mkpath_as_root(const char* path);
void extract_command_name(int index, char **argv);
void logsignal(int s);
void logmsg(const char *msg);
void logargs(int argc, char **argv) ;
void logerr(const char *msg);
void set_nice(int inc);
int copy_file(const char *srcname, const char *destname, uid_t uid, gid_t gid, mode_t mode);
void copy_file_as_user(const char *srcname, const char *destname, uid_t uid, gid_t gid, mode_t mode);
void copy_file_from_user_to_root(const char *srcname, const char *destname, uid_t uid, gid_t gid, mode_t mode);
void touch_file_as_user(const char *fname, mode_t mode);
int is_dir(const char *fname);
int is_link(const char *fname);
void trim_trailing_slash_or_dot(char *path);
char *line_remove_spaces(const char *buf);
char *split_comma(char *str);
char *clean_pathname(const char *path);
void check_unsigned(const char *str, const char *msg);
int find_child(pid_t parent, pid_t *child);
void check_private_dir(void);
void update_map(char *mapping, char *map_file);
void wait_for_other(int fd);
void notify_other(int fd);
const char *gnu_basename(const char *path);
uid_t pid_get_uid(pid_t pid);
uid_t get_group_id(const char *group);
int remove_overlay_directory(void);
void flush_stdin(void);
int create_empty_dir_as_user(const char *dir, mode_t mode);
void create_empty_dir_as_root(const char *dir, mode_t mode);
void create_empty_file_as_root(const char *dir, mode_t mode);
int set_perms(const char *fname, uid_t uid, gid_t gid, mode_t mode);
void mkdir_attr(const char *fname, mode_t mode, uid_t uid, gid_t gid);
unsigned extract_timeout(const char *str);
void disable_file_or_dir(const char *fname);
void disable_file_path(const char *path, const char *file);
int safe_fd(const char *path, int flags);
int has_handler(pid_t pid, int signal);
void enter_network_namespace(pid_t pid);
// Get info regarding the last kernel mount operation from /proc/self/mountinfo
// The return value points to a static area, and will be overwritten by subsequent calls.
// The function does an exit(1) if anything goes wrong.
typedef struct {
int mountid; // id of the mount
char *fsname; // the pathname of the directory in the filesystem which forms the root of this mount
char *dir; // mount destination
char *fstype; // filesystem type
} MountData;
// mountinfo.c
MountData *get_last_mount(void);
int get_mount_id(const char *path);
char **build_mount_array(const int mount_id, const char *path);
// fs_var.c
void fs_var_log(void); // mounting /var/log
void fs_var_lib(void); // various other fixes for software in /var directory
void fs_var_cache(void); // various other fixes for software in /var/cache directory
void fs_var_run(void);
void fs_var_lock(void);
void fs_var_tmp(void);
void fs_var_utmp(void);
void dbg_test_dir(const char *dir);
// fs_dev.c
void fs_dev_shm(void);
void fs_private_dev(void);
void fs_dev_disable_sound(void);
void fs_dev_disable_3d(void);
void fs_dev_disable_video(void);
void fs_dev_disable_tv(void);
void fs_dev_disable_dvd(void);
void fs_dev_disable_u2f(void);
// fs_home.c
// private mode (--private)
void fs_private(void);
// private mode (--private=homedir)
void fs_private_homedir(void);
// check new private home directory (--private= option) - exit if it fails
void fs_check_private_dir(void);
// check new private working directory (--private-cwd= option) - exit if it fails
void fs_check_private_cwd(const char *dir);
void fs_private_home_list(void);
// seccomp.c
char *seccomp_check_list(const char *str);
int seccomp_install_filters(void);
int seccomp_load(const char *fname);
int seccomp_filter_drop(bool native);
int seccomp_filter_keep(bool native);
int seccomp_filter_mdwx(bool native);
void seccomp_print_filter(pid_t pid);
// caps.c
void seccomp_load_file_list(void);
int caps_default_filter(void);
void caps_print(void);
void caps_drop_all(void);
void caps_set(uint64_t caps);
void caps_check_list(const char *clist, void (*callback)(int));
void caps_drop_list(const char *clist);
void caps_keep_list(const char *clist);
void caps_print_filter(pid_t pid);
void caps_drop_dac_override(void);
// fs_trace.c
void fs_trace_preload(void);
void fs_tracefile(void);
void fs_trace(void);
// fs_hostname.c
void fs_hostname(const char *hostname);
void fs_resolvconf(void);
char *fs_check_hosts_file(const char *fname);
void fs_store_hosts_file(void);
void fs_mount_hosts_file(void);
// rlimit.c
void set_rlimits(void);
// cpu.c
void read_cpu_list(const char *str);
void set_cpu_affinity(void);
void load_cpu(const char *fname);
void save_cpu(void);
void cpu_print_filter(pid_t pid);
// cgroup.c
void save_cgroup(void);
void load_cgroup(const char *fname);
void set_cgroup(const char *path);
// output.c
void check_output(int argc, char **argv);
// netfilter.c
void check_netfilter_file(const char *fname);
void netfilter(const char *fname);
void netfilter6(const char *fname);
void netfilter_print(pid_t pid, int ipv6);
// netns.c
void check_netns(const char *nsname);
void netns(const char *nsname);
void netns_mounts(const char *nsname);
// bandwidth.c
void bandwidth_pid(pid_t pid, const char *command, const char *dev, int down, int up);
void network_set_run_file(pid_t pid);
// fs_etc.c
void fs_machineid(void);
void fs_private_dir_list(const char *private_dir, const char *private_run_dir, const char *private_list);
// no_sandbox.c
int check_namespace_virt(void);
int check_kernel_procs(void);
void run_no_sandbox(int argc, char **argv);
#define MAX_ENVS 256 // some sane maximum number of environment variables
#define MAX_ENV_LEN (PATH_MAX + 32) // FOOBAR=SOME_PATH
// env.c
typedef enum {
SETENV = 0,
RMENV
} ENV_OP;
void env_store(const char *str, ENV_OP op);
void env_apply(void);
void env_defaults(void);
void env_ibus_load(void);
// fs_whitelist.c
void fs_whitelist(void);
// pulseaudio.c
void pulseaudio_init(void);
void pulseaudio_disable(void);
// fs_bin.c
void fs_private_bin_list(void);
// fs_lib.c
void fs_private_lib(void);
// protocol.c
void protocol_filter_save(void);
void protocol_filter_load(const char *fname);
void protocol_print_filter(pid_t pid);
// restrict_users.c
void restrict_users(void);
// fs_logger.c
void fs_logger(const char *msg);
void fs_logger2(const char *msg1, const char *msg2);
void fs_logger2int(const char *msg1, int d);
void fs_logger3(const char *msg1, const char *msg2, const char *msg3);
void fs_logger_print(void);
void fs_logger_change_owner(void);
void fs_logger_print_log(pid_t pid);
// run_symlink.c
void run_symlink(int argc, char **argv, int run_as_is);
// paths.c
char **build_paths(void);
unsigned int count_paths(void);
int program_in_path(const char *program);
// fs_mkdir.c
void fs_mkdir(const char *name);
void fs_mkfile(const char *name);
// x11.c
// X11 display range as assigned by --x11 options
// We try display numbers in the range 21 through 1000.
// Normal X servers typically use displays in the 0-10 range;
// ssh's X11 forwarding uses 10-20, and login screens
// (e.g. gdm3) may use displays above 1000.
#define X11_DISPLAY_START 21
#define X11_DISPLAY_END 1000
void fs_x11(void);
int x11_display(void);
void x11_start(int argc, char **argv);
void x11_start_xpra(int argc, char **argv);
void x11_start_xephyr(int argc, char **argv);
void x11_block(void);
void x11_start_xvfb(int argc, char **argv);
void x11_xorg(void);
// ls.c
enum {
SANDBOX_FS_LS = 0,
SANDBOX_FS_GET,
SANDBOX_FS_PUT,
SANDBOX_FS_MAX // this should always be the last entry
};
void sandboxfs(int op, pid_t pid, const char *path1, const char *path2);
// checkcfg.c
#define DEFAULT_ARP_PROBES 2
enum {
CFG_FILE_TRANSFER = 0,
CFG_X11,
CFG_BIND,
CFG_USERNS,
CFG_CHROOT,
CFG_SECCOMP,
CFG_NETWORK,
CFG_RESTRICTED_NETWORK,
CFG_FORCE_NONEWPRIVS,
CFG_WHITELIST,
CFG_XEPHYR_WINDOW_TITLE,
CFG_OVERLAYFS,
CFG_PRIVATE_HOME,
CFG_PRIVATE_BIN_NO_LOCAL,
CFG_FIREJAIL_PROMPT,
CFG_FOLLOW_SYMLINK_AS_USER,
CFG_DISABLE_MNT,
CFG_JOIN,
CFG_ARP_PROBES,
CFG_XPRA_ATTACH,
CFG_BROWSER_DISABLE_U2F,
CFG_BROWSER_ALLOW_DRM,
CFG_PRIVATE_LIB,
CFG_APPARMOR,
CFG_DBUS,
CFG_PRIVATE_CACHE,
CFG_CGROUP,
CFG_NAME_CHANGE,
CFG_SECCOMP_ERROR_ACTION,
// CFG_FILE_COPY_LIMIT - file copy limit handled using setenv/getenv
CFG_MAX // this should always be the last entry
};
extern char *xephyr_screen;
extern char *xephyr_extra_params;
extern char *xpra_extra_params;
extern char *xvfb_screen;
extern char *xvfb_extra_params;
extern char *netfilter_default;
extern unsigned long join_timeout;
extern char *config_seccomp_error_action_str;
int checkcfg(int val);
void print_compiletime_support(void);
// appimage.c
void appimage_set(const char *appimage_path);
void appimage_clear(void);
const char *appimage_getdir(void);
// appimage_size.c
long unsigned int appimage2_size(const char *fname);
// cmdline.c
void build_cmdline(char **command_line, char **window_title, int argc, char **argv, int index);
void build_appimage_cmdline(char **command_line, char **window_title, int argc, char **argv, int index, char *apprun_path);
// sbox.c
// programs
#define PATH_FNET_MAIN (LIBDIR "/firejail/fnet") // when called from main thread
#define PATH_FNET (RUN_FIREJAIL_LIB_DIR "/fnet") // when called from sandbox thread
//#define PATH_FNETFILTER (LIBDIR "/firejail/fnetfilter")
#define PATH_FNETFILTER (RUN_FIREJAIL_LIB_DIR "/fnetfilter")
#define PATH_FIREMON (PREFIX "/bin/firemon")
#define PATH_FIREJAIL (PREFIX "/bin/firejail")
#define PATH_FSECCOMP_MAIN (LIBDIR "/firejail/fseccomp") // when called from main thread
#define PATH_FSECCOMP ( RUN_FIREJAIL_LIB_DIR "/fseccomp") // when called from sandbox thread
// FSEC_PRINT is run outside of sandbox by --seccomp.print
// it is also run from inside the sandbox by --debug; in this case we do an access(filename, X_OK) test first
#define PATH_FSEC_PRINT (LIBDIR "/firejail/fsec-print")
//#define PATH_FSEC_OPTIMIZE (LIBDIR "/firejail/fsec-optimize")
#define PATH_FSEC_OPTIMIZE (RUN_FIREJAIL_LIB_DIR "/fsec-optimize")
//#define PATH_FCOPY (LIBDIR "/firejail/fcopy")
#define PATH_FCOPY (RUN_FIREJAIL_LIB_DIR "/fcopy")
#define SBOX_STDIN_FILE "/run/firejail/mnt/sbox_stdin"
//#define PATH_FLDD (LIBDIR "/firejail/fldd")
#define PATH_FLDD (RUN_FIREJAIL_LIB_DIR "/fldd")
// bitmapped filters for sbox_run
#define SBOX_ROOT (1 << 0) // run the sandbox as root
#define SBOX_USER (1 << 1) // run the sandbox as a regular user
#define SBOX_SECCOMP (1 << 2) // install seccomp
#define SBOX_CAPS_NONE (1 << 3) // drop all capabilities
#define SBOX_CAPS_NETWORK (1 << 4) // caps filter for programs running network programs
#define SBOX_ALLOW_STDIN (1 << 5) // don't close stdin
#define SBOX_STDIN_FROM_FILE (1 << 6) // open file and redirect it to stdin
#define SBOX_CAPS_HIDEPID (1 << 7) // hidepid caps filter for running firemon
#define SBOX_CAPS_NET_SERVICE (1 << 8) // caps filter for programs running network services
#define SBOX_KEEP_FDS (1 << 9) // keep file descriptors open
#define FIREJAIL_MAX_FD 20 // getdtablesize() is overkill for a firejail process
// run sbox
int sbox_run(unsigned filter, int num, ...);
int sbox_run_v(unsigned filter, char * const arg[]);
void sbox_exec_v(unsigned filter, char * const arg[]);
// run_files.c
void delete_run_files(pid_t pid);
void delete_bandwidth_run_file(pid_t pid);
void set_name_run_file(pid_t pid);
void set_x11_run_file(pid_t pid, int display);
void set_profile_run_file(pid_t pid, const char *fname);
// dbus.c
int dbus_check_name(const char *name);
int dbus_check_call_rule(const char *name);
void dbus_check_profile(void);
void dbus_proxy_start(void);
void dbus_proxy_stop(void);
void dbus_set_session_bus_env(void);
void dbus_set_system_bus_env(void);
void dbus_apply_policy(void);
// dhcp.c
extern pid_t dhclient4_pid;
extern pid_t dhclient6_pid;
void dhcp_start(void);
// selinux.c
void selinux_relabel_path(const char *path, const char *inside_path);
#endif
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