├── AUTHORS ├── COPYING ├── INSTALL ├── Makefile ├── README ├── ia32_addr.h ├── laf.c ├── laf.cfg ├── laf.h ├── laf.service ├── lafctl.c ├── lafd.c ├── lafd.conf ├── laffun.c ├── laffun.h ├── qlaf ├── COPYING ├── INSTALL ├── common.h ├── icons │ ├── laf_amber.svg │ ├── laf_green.svg │ ├── laf_icon.svg │ ├── laf_mute_amber.svg │ ├── laf_mute_green.svg │ ├── laf_mute_red.svg │ └── laf_red.svg ├── initdbus.cpp ├── initdbus.h ├── main.cpp ├── qlaf.pro ├── systray.qrc ├── window.cpp └── window.h └── scripts └── premake.sh /AUTHORS: -------------------------------------------------------------------------------- 1 | @sha0coder 2 | @capi_x 3 | -------------------------------------------------------------------------------- /COPYING: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 3, 29 June 2007 3 | 4 | Copyright (C) 2007 Free Software Foundation, Inc. 5 | Everyone is permitted to copy and distribute verbatim copies 6 | of this license document, but changing it is not allowed. 7 | 8 | Preamble 9 | 10 | The GNU General Public License is a free, copyleft license for 11 | software and other kinds of works. 12 | 13 | The licenses for most software and other practical works are designed 14 | to take away your freedom to share and change the works. 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Limitation of Liability. 601 | 602 | IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING 603 | WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS 604 | THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY 605 | GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE 606 | USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF 607 | DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD 608 | PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), 609 | EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF 610 | SUCH DAMAGES. 611 | 612 | 17. Interpretation of Sections 15 and 16. 613 | 614 | If the disclaimer of warranty and limitation of liability provided 615 | above cannot be given local legal effect according to their terms, 616 | reviewing courts shall apply local law that most closely approximates 617 | an absolute waiver of all civil liability in connection with the 618 | Program, unless a warranty or assumption of liability accompanies a 619 | copy of the Program in return for a fee. 620 | 621 | END OF TERMS AND CONDITIONS 622 | 623 | How to Apply These Terms to Your New Programs 624 | 625 | If you develop a new program, and you want it to be of the greatest 626 | possible use to the public, the best way to achieve this is to make it 627 | free software which everyone can redistribute and change under these terms. 628 | 629 | To do so, attach the following notices to the program. It is safest 630 | to attach them to the start of each source file to most effectively 631 | state the exclusion of warranty; and each file should have at least 632 | the "copyright" line and a pointer to where the full notice is found. 633 | 634 | LAF - Linux Application Firewall 635 | Copyright (C) 2015-2016 @sha0coder and @capi_x 636 | 637 | This program is free software: you can redistribute it and/or modify 638 | it under the terms of the GNU General Public License as published by 639 | the Free Software Foundation, either version 3 of the License, or 640 | (at your option) any later version. 641 | 642 | This program is distributed in the hope that it will be useful, 643 | but WITHOUT ANY WARRANTY; without even the implied warranty of 644 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 645 | GNU General Public License for more details. 646 | 647 | You should have received a copy of the GNU General Public License 648 | along with this program. If not, see . 649 | 650 | Also add information on how to contact you by electronic and paper mail. 651 | 652 | If the program does terminal interaction, make it output a short 653 | notice like this when it starts in an interactive mode: 654 | 655 | LAF Copyright (C) 2015-2016 @sha0coder and @capi_x 656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 657 | This is free software, and you are welcome to redistribute it 658 | under certain conditions; type `show c' for details. 659 | 660 | The hypothetical commands `show w' and `show c' should show the appropriate 661 | parts of the General Public License. Of course, your program's commands 662 | might be different; for a GUI interface, you would use an "about box". 663 | 664 | You should also get your employer (if you work as a programmer) or school, 665 | if any, to sign a "copyright disclaimer" for the program, if necessary. 666 | For more information on this, and how to apply and follow the GNU GPL, see 667 | . 668 | 669 | The GNU General Public License does not permit incorporating your program 670 | into proprietary programs. If your program is a subroutine library, you 671 | may consider it more useful to permit linking proprietary applications with 672 | the library. If this is what you want to do, use the GNU Lesser General 673 | Public License instead of this License. But first, please read 674 | . 675 | -------------------------------------------------------------------------------- /INSTALL: -------------------------------------------------------------------------------- 1 | ** DEPENDENCIES ** 2 | # apt install libdbus-1-dev linux-headers-amd64 3 | 4 | The usual build is: 5 | $ make 6 | $ make install 7 | 8 | * Add the laf entry in the /etc/modules.conf (or your distro similar name) 9 | 10 | To launch the lafd and set the whitelist: 11 | # systemd start laf.service 12 | 13 | To make ONLY the kernel module 14 | $ make modules 15 | $ make modules-install 16 | 17 | Uninstall procedure: 18 | $ make uninstall 19 | 20 | (and only the kernel module) 21 | $ make modules-uninstall 22 | 23 | ** Note: the whitelist is in: /etc/laf.cfg ** 24 | -------------------------------------------------------------------------------- /Makefile: -------------------------------------------------------------------------------- 1 | ifndef EXTRA_CFLAGS 2 | EXTRA_CFLAGS = -s -O3 -fno-strict-aliasing -ffast-math -funroll-loops -pipe # -Wall -Wextra -pedantic 3 | endif 4 | 5 | ifndef CC 6 | CC = gcc 7 | endif 8 | 9 | obj-m := laf.o 10 | 11 | all: laffun lafctl lafd modules 12 | 13 | laffun: 14 | $(CC) $(EXTRA_CFLAGS) -c laffun.c 15 | 16 | lafctl: 17 | $(CC) $(EXTRA_CFLAGS) laffun.o lafctl.c -o lafctl 18 | 19 | lafd: 20 | $(CC) $(EXTRA_CFLAGS) laffun.o lafd.c $(shell pkg-config --cflags dbus-1) -o lafd $(shell pkg-config --libs dbus-1) 21 | 22 | modules: 23 | sudo bash scripts/premake.sh 24 | make -C /lib/modules/$(shell uname -r)/build M=$(PWD) modules -Wunused-function -Werror=strict-prototypes 25 | true > ia32_addr.h 26 | 27 | modules-install: 28 | sudo cp -f laf.ko /lib/modules/$(shell uname -r)/kernel/net/laf 29 | sudo depmod -a 30 | 31 | modules-uninstall: 32 | sudo rmmod laf 33 | sudo rm /lib/modules/$(shell uname -r)/kernel/net/laf/laf.ko 34 | sudo rmdir /lib/modules/$(shell uname -r)/kernel/net/laf 35 | 36 | uninstall: 37 | sudo rm /usr/bin/lafctl 38 | sudo rm /usr/bin/lafd 39 | sudo rm /etc/laf.cfg 40 | sudo rm /lib/systemd/system/laf.service 41 | sudo rm /etc/dbus-1/system.d/lafd.conf 42 | sudo rmmod laf 43 | sudo rm /lib/modules/$(shell uname -r)/kernel/net/laf/laf.ko 44 | sudo rmdir /lib/modules/$(shell uname -r)/kernel/net/laf 45 | sudo systemctl disable laf.service 46 | echo "** NOW REMOVE laf FROM YOUR /etc/modules.conf OR /etc/modules-load.d FILE **" 47 | 48 | install: 49 | sudo cp -f lafctl /usr/bin 50 | sudo cp -f lafd /usr/bin 51 | sudo cp -f laf.cfg /etc 52 | sudo cp -f laf.service /lib/systemd/system/ 53 | sudo cp -f lafd.conf /etc/dbus-1/system.d/ 54 | sudo mkdir -p /lib/modules/$(shell uname -r)/kernel/net/laf 55 | sudo cp -f laf.ko /lib/modules/$(shell uname -r)/kernel/net/laf 56 | sudo depmod -a 57 | sudo systemctl enable laf.service 58 | echo "** NOW ADD laf TO YOUR /etc/modules.conf OR /etc/modules-load.d FILE **" 59 | 60 | unload: 61 | sudo rmmod laf 62 | 63 | load: all 64 | sudo insmod laf.ko 65 | 66 | reset: clean unload load 67 | 68 | clean: 69 | make -C /lib/modules/$(shell uname -r)/build M=$(PWD) clean 70 | rm -f laffun.o lafctl lafd 71 | 72 | mrproper: clean 73 | rm -f *.mod.* *.o *.ko .laf.* modules.order 74 | -------------------------------------------------------------------------------- /README: -------------------------------------------------------------------------------- 1 | == Introduction == 2 | 3 | LAF - Linux Application Firewall 4 | This kernel driver blocks network sockets, allowing only whitelisted process to connect to the LAN and the Internet. 5 | 6 | While iptables filter by ip and port, it cannot filter by process name - laf.ko is a simple driver to do this. 7 | 8 | The following diagram describes the inner workings: 9 | 10 | +--------+ add +--------+ 11 | | sysctl | <---------> | laf.ko | --------+ 12 | +--------+ enabled = 0 +--------+ NETLINK | 13 | ^ debug = 0 ^ | 14 | | log = 1 | upload | 15 | | | whitelist | get events KERNEL 16 | - | - - - - - | - - - | - - - - - - - 17 | | +-------+ +------+ events +------+ USER 18 | | sets | NETLINK | lafd | -------> | DBus | 19 | | enabled = 1 | +------+ +------+ 20 | +--------------------+ launch +---------+ | 21 | | lafctl | <-------- | systemd | | QtDBus 22 | +--------------------+ +---------+ +------+ 23 | ^ read whitelist ^ | qlaf | 24 | | | +------+ 25 | +--------------+ +---------------------------------+ 26 | | /etc/laf.cfg | | /lib/systemd/system/laf.service | 27 | +--------------+ +---------------------------------+ 28 | 29 | 30 | == Configuration == 31 | 32 | Edit /etc/laf.cfg 33 | 34 | There are two whitelists. The first is for specifying the entire process name that we want to allow access to network sockets. 35 | 36 | The second is for strings to be compared with strstr(), if you want to allow all process with a name containing a specific word, then this is the wordlist for doing that. For example, Chrome changes its process name, so this wordlist should be used. 37 | 38 | == Installing and running == 39 | 40 | $ make 41 | # make install 42 | 43 | This will compile and copy the module on /lib/modules. 44 | You can load it with: 45 | 46 | # modprobe laf 47 | 48 | Add the module to /etc/modules or similar... 49 | 50 | # vi /etc/laf.cfg 51 | # lafctl -u -f /etc/laf.cfg 52 | 53 | To make the qLAF GUI: 54 | 55 | $ cd qlaf 56 | $ qmake 57 | $ make 58 | # cp qlaf /usr/bin 59 | 60 | If you want to see what is blocking the LAF driver: 61 | 62 | tail -f /var/log/kern.log 63 | 64 | [ 9006.541447] LAF: Enabled 65 | [ 9010.042030] LAF: call 01 fam 0x100000002 blocked: iexplore.exe (24763:24730) parent: wine (24728) 66 | [ 9015.586690] LAF: call 01 fam 0x100000002 blocked: kk.x86 (24769:24769) parent: bash (10343) 67 | [13118.760088] LAF: call 01 fam 0x100000002 blocked: wineserver (25729:25729) parent: systemd (1) 68 | [16569.004590] LAF: fam 10 proto 00 blocked: VBoxXPCOMIPCD (26102:26102) parent: systemd (1) 69 | [16569.048654] LAF: fam 10 proto 00 blocked: VBoxSVC (26107:26107) parent: systemd (1) 70 | 71 | And if lafd is started you also can monitor the dbus: 72 | 73 | $ dbus-monitor --system "interface='laf.signal.source'" 74 | 75 | signal sender=:1.529 -> dest=(null destination) serial=19 path=/laf/signal/alert; interface=laf.signal.source; member=event 76 | string "/2/0/kk/27293/27293/bash/27255" 77 | 78 | == Philosophy == 79 | 80 | This is not a comprehensive solution against advanced attackers. There are many ways to bypass this kind of protection. However, it makes for an additional barrier for the attacker to overcome - think of it as defense in depth. The typical use case would be to isolate vainilla spyware, privacy issues and to block most common shellcodes. 81 | 82 | In the past we protected our open ports to the Internet, nowadays the problem is in the client side, client apps sending data to the Internet. 83 | 84 | == Authors == 85 | 86 | @sha0coder: https://twitter.com/sha0coder 87 | @capi_x: https://twitter.com/capi_x 88 | -------------------------------------------------------------------------------- /ia32_addr.h: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/sha0coder/LAF/3037731c1bd063797a7381f19203907af35be679/ia32_addr.h -------------------------------------------------------------------------------- /laf.c: -------------------------------------------------------------------------------- 1 | /* 2 | LAF - Linux Application Firewall (for linux Intel 32 and 64bits and ARM 32 bits) 3 | This firewall allows only communications made from allowed processes 4 | 5 | The detection and block is performed over the socket, AF_UNIX are allowed 6 | allways. 7 | 8 | If other kind of socket is created (AF_INET,AF_INET6,...) if the 9 | processname is not in the whitelist the socket creation is canceled. 10 | 11 | Copyright 2015-2016 by @sha0coder and @capi_x 12 | 13 | Licensed under GNU General Public License 3.0 or later. 14 | Some rights reserved. See COPYING, AUTHORS. 15 | 16 | @license GPL-3.0 17 | */ 18 | 19 | #include /* Needed by all modules */ 20 | #include /* Needed for KERN_INFO */ 21 | #include /* Needed for the macros */ 22 | #include /* ULLONG_MAX */ 23 | #include 24 | #include 25 | #include 26 | #include /* current struct */ 27 | #include /* sockaddr_in */ 28 | #include 29 | #include 30 | #include 31 | #include 32 | 33 | #include 34 | 35 | #include "laf.h" 36 | #include "ia32_addr.h" 37 | 38 | #ifdef __x86_64__ 39 | # define __NR_socketcall 102 40 | # define IA32_AF_INET 0x100000002 41 | #elif defined(__i386__) 42 | # ifndef __NR_socket 43 | # define __NR_socket (__X32_SYSCALL_BIT + 41) 44 | # endif 45 | # define IA32_AF_INET 0x2 46 | #else 47 | # define IA32_AF_INET 0x2 48 | #endif 49 | 50 | /* 51 | * ENABLED 0 -> don't block sockets | ENABLED 1 -> block sockets 52 | * DEBUG 1 -> log allowed sockets 53 | * LOG 0 -> don't log blocks | LOG 1 -> log blocks */ 54 | static int ENABLED = 0; 55 | static int DEBUG = 0; 56 | static int LOG = 1; 57 | 58 | static int sysctl_min_val = 0; 59 | static int sysctl_max_val = 1; 60 | static struct ctl_table_header *busy_sysctl_header; 61 | 62 | struct sock *laf_netlink = NULL; 63 | 64 | char *whitelist_exact [MAX_WHITELIST]; 65 | char *whitelist_similar[MAX_WHITELIST]; 66 | 67 | asmlinkage long (*old_socketcall) (int call, unsigned long __user *args); 68 | asmlinkage int (*old_socket) (int domain, int type, int protocol); 69 | 70 | unsigned long **st; 71 | unsigned long **ia32_st; 72 | 73 | static void laf_netlink_send(char * msg_out, unsigned long msg_out_size) { 74 | int res = 0; 75 | struct nlmsghdr *nlh; 76 | struct sk_buff *skb_out; 77 | 78 | skb_out = nlmsg_new(NLMSG_ALIGN(msg_out_size), GFP_KERNEL); 79 | 80 | if (!skb_out) { 81 | printk(KERN_ALERT "LAF: Failed to allocate new skb.\n"); 82 | kfree(msg_out); 83 | return; 84 | } 85 | 86 | nlh = nlmsg_put(skb_out, 0, 1, NLMSG_DONE, msg_out_size, 0); 87 | strncpy(nlmsg_data(nlh), msg_out, msg_out_size - 1); 88 | 89 | res = nlmsg_multicast(laf_netlink, skb_out, 0, NETLINK_LAF_GRP, GFP_KERNEL); 90 | 91 | /* a client must be listening, if not it will throw a -3 error (only in debug mode) */ 92 | if ( res < 0 && DEBUG) 93 | printk(KERN_ALERT "LAF: Error %i sending netlink multicast.\n", res); 94 | 95 | } 96 | 97 | static void laf_get_whitelist (char **whitelist) { 98 | unsigned long msg_out_len = 0; 99 | char *msg_out; 100 | int i=0; 101 | 102 | printk(KERN_INFO "LAF: Request - get whitelist.\n"); 103 | 104 | for (i=0; i= (MAX_WHITELIST - 1)) { 155 | printk(KERN_INFO "LAF: whitelist limit reached (%i).\n", MAX_WHITELIST); 156 | break; 157 | } 158 | if (strlen(token) > 0) { 159 | if (DEBUG) 160 | printk(KERN_INFO "LAF: exact - %s\n", token ); 161 | whitelist[i] = kmalloc(strlen(token) + 1, GFP_KERNEL); 162 | strcpy(whitelist[i],token); 163 | i++; 164 | } 165 | token = strsep(&msg_in, delim); 166 | } 167 | whitelist[i] = NULL; 168 | } 169 | 170 | static void laf_netlink_recv(struct sk_buff *skb) { 171 | struct nlmsghdr *nlh; 172 | char *msg_raw; 173 | 174 | /* the first msg_raw char is the command, the next is the payload and points to msg */ 175 | nlh = (struct nlmsghdr*)skb->data; 176 | msg_raw = (char*)nlmsg_data(nlh); 177 | 178 | if (DEBUG) 179 | printk(KERN_INFO "LAF: recv from %d - %s\n", nlh->nlmsg_pid, msg_raw); 180 | 181 | switch (msg_raw[0]) { 182 | case '1': 183 | laf_get_whitelist(whitelist_exact); 184 | break; 185 | case '2': 186 | laf_get_whitelist(whitelist_similar); 187 | break; 188 | case '3': 189 | laf_set_whitelist(msg_raw, whitelist_exact); 190 | break; 191 | case '4': 192 | laf_set_whitelist(msg_raw, whitelist_similar); 193 | break; 194 | default: 195 | printk(KERN_INFO "LAF: recv -> WTF?!\n"); 196 | break; 197 | } 198 | 199 | return; 200 | } 201 | 202 | static void laf_send_alert(int type, int domain, int protocol, char *comm, int pid, int tgid, char *parent_comm, int parent_pid ) { 203 | unsigned long new_msg_size = 0; 204 | unsigned long org_msg_size = 0; 205 | char *new_msg; 206 | 207 | /* kernel log */ 208 | if (LOG) 209 | switch (type) { 210 | case LAF_BLOCK_S: 211 | printk(KERN_INFO "LAF: fam %02d proto %02d blocked: %s (%i:%i) parent: %s (%i)\n", domain, protocol, comm, pid, tgid, parent_comm, parent_pid); 212 | break; 213 | case LAF_ALLOW_S: 214 | printk(KERN_INFO "LAF: fam %02d proto %02d allowed: %s (%i:%i) parent: %s (%i)\n", domain, protocol, comm, pid, tgid, parent_comm, parent_pid); 215 | break; 216 | case LAF_BLOCK_SC: 217 | printk(KERN_INFO "LAF: call %02d fam 0x%x blocked: %s (%i:%i) parent: %s (%i)\n", domain, protocol, comm, pid, tgid, parent_comm, parent_pid); 218 | break; 219 | case LAF_ALLOW_SC: 220 | printk(KERN_INFO "LAF: call %02d fam 0x%x allowed: %s (%i:%i) parent: %s (%i)\n", domain, protocol, comm, pid, tgid, parent_comm, parent_pid); 221 | break; 222 | } 223 | 224 | /* netlink broadcast */ 225 | org_msg_size = strlen(comm) + strlen(parent_comm) + ( sizeof(int) * 6 ) + 1; 226 | new_msg_size = org_msg_size + 8; /* 7 slash + 1 null */ 227 | 228 | new_msg = (char *) kmalloc(new_msg_size, GFP_KERNEL); 229 | sprintf(new_msg, "/%i/%i/%s/%i/%i/%s/%i", domain, protocol, comm, pid, tgid, parent_comm, parent_pid); 230 | 231 | laf_netlink_send(new_msg, new_msg_size); 232 | 233 | kfree(new_msg); 234 | } 235 | 236 | static unsigned long **acquire_sys_call_table(void) 237 | { 238 | unsigned long int offset = PAGE_OFFSET; 239 | unsigned long **sct; 240 | 241 | while (offset < ULLONG_MAX) { 242 | sct = (unsigned long **)offset; 243 | 244 | if (sct[__NR_close] == (unsigned long *) sys_close) 245 | return sct; 246 | 247 | offset += sizeof(void *); 248 | } 249 | 250 | return NULL; 251 | } 252 | 253 | #ifdef __x86_64__ 254 | static unsigned long **acquire_ia32_sys_call_table(void) 255 | { 256 | return (unsigned long **)SYSCALL_IA32_ADDR; 257 | } 258 | #endif 259 | 260 | int isWhitelistedSimilar(void) { 261 | int i; 262 | 263 | for (i=0; icomm), whitelist_similar[i]) != NULL) 269 | return 1; 270 | } 271 | 272 | return 0; 273 | } 274 | 275 | int isWhitelistedExact(void) { 276 | int i; 277 | 278 | for (i=0; icomm)) == 0) 284 | return 1; 285 | } 286 | 287 | return 0; 288 | } 289 | 290 | static void disable_page_protection(void) { 291 | #ifndef __arm__ 292 | unsigned long value; 293 | asm volatile("mov %%cr0, %0" : "=r" (value)); 294 | 295 | if(!(value & 0x00010000)) 296 | return; 297 | 298 | asm volatile("mov %0, %%cr0" : : "r" (value & ~0x00010000)); 299 | #endif 300 | } 301 | 302 | static void enable_page_protection(void) { 303 | #ifndef __arm__ 304 | unsigned long value; 305 | asm volatile("mov %%cr0, %0" : "=r" (value)); 306 | 307 | if((value & 0x00010000)) 308 | return; 309 | 310 | asm volatile("mov %0, %%cr0" : : "r" (value | 0x00010000)); 311 | #endif 312 | } 313 | 314 | /* new_socket - function to block or allow a new socket 315 | * -- 316 | * Those family/type are whitelisted because cannot use IPv4/6: 317 | * 318 | * +============+===========================+====+ 319 | * | FAMILY | PROTOCOLS |TYPE| 320 | * +============+===========================+====+ 321 | * | AF_UNIX | ALL PROTOCOLS | -- | 322 | * +------------+---------------------------+----+ 323 | * | AF_NETLINK | NETLINK_AUDIT | 09 | 324 | * | | NETLINK_KOBJECT_UEVENT | 15 | 325 | * +------------+---------------------------+----+ 326 | * 327 | * This function also check if the socket is whitelisted in the 328 | * whitelist. 329 | */ 330 | 331 | asmlinkage int new_socket(int domain, int type, int protocol) { 332 | if ((domain != AF_UNIX) && ((domain != AF_NETLINK) && (protocol != 9) && (protocol != 15))) { 333 | if (!isWhitelistedExact() && !isWhitelistedSimilar() && ENABLED) { 334 | laf_send_alert(LAF_BLOCK_S, domain,protocol,current->comm,current->pid,current->tgid,current->real_parent->comm,current->real_parent->pid); 335 | return BLOCKED; 336 | } else if (DEBUG) 337 | laf_send_alert(LAF_ALLOW_S, domain,protocol,current->comm,current->pid,current->tgid,current->real_parent->comm,current->real_parent->pid); 338 | } 339 | 340 | return old_socket(domain,type,protocol); 341 | } 342 | 343 | asmlinkage long new_socketcall(int call, unsigned long __user *args) { 344 | 345 | switch (call) { 346 | case SYS_BIND: 347 | case SYS_SOCKET: 348 | 349 | if (!access_ok(VERIFY_READ, args, sizeof(unsigned long *))) 350 | return BLOCKED; 351 | 352 | if (args[0] == IA32_AF_INET) { 353 | if (!isWhitelistedExact() && !isWhitelistedSimilar() && ENABLED) { 354 | laf_send_alert(LAF_BLOCK_SC, call,args[0],current->comm,current->pid,current->tgid,current->real_parent->comm,current->real_parent->pid); 355 | return BLOCKED; 356 | } else if (DEBUG) 357 | laf_send_alert(LAF_ALLOW_SC, call,args[0],current->comm,current->pid,current->tgid,current->real_parent->comm,current->real_parent->pid); 358 | } 359 | 360 | break; 361 | } 362 | 363 | return old_socketcall(call,args); 364 | } 365 | 366 | static struct ctl_table laf_child_table[] = { 367 | { 368 | .procname = "enabled", 369 | .maxlen = sizeof(int), 370 | .mode = 0644, 371 | .data = &ENABLED, 372 | .proc_handler = &proc_dointvec_minmax, 373 | .extra1 = &sysctl_min_val, 374 | .extra2 = &sysctl_max_val, 375 | }, 376 | { 377 | .procname = "debug", 378 | .maxlen = sizeof(int), 379 | .mode = 0644, 380 | .data = &DEBUG, 381 | .proc_handler = &proc_dointvec_minmax, 382 | .extra1 = &sysctl_min_val, 383 | .extra2 = &sysctl_max_val, 384 | }, 385 | { 386 | .procname = "log", 387 | .maxlen = sizeof(int), 388 | .mode = 0644, 389 | .data = &LOG, 390 | .proc_handler = &proc_dointvec_minmax, 391 | .extra1 = &sysctl_min_val, 392 | .extra2 = &sysctl_max_val, 393 | }, 394 | {} 395 | }; 396 | 397 | static struct ctl_table laf_main_table[] = { 398 | { 399 | .procname = "laf", 400 | .mode = 0555, 401 | .child = laf_child_table, 402 | }, 403 | {} 404 | }; 405 | 406 | static struct ctl_table kernel_main_table[] = { 407 | { 408 | .procname = "kernel", 409 | .mode = 0555, 410 | .child = laf_main_table, 411 | }, 412 | {} 413 | }; 414 | 415 | void unHook(void) { 416 | disable_page_protection(); 417 | 418 | /* Reset old syscall table */ 419 | #ifndef __i386__ 420 | st[__NR_socket] = (void *)old_socket; 421 | #endif 422 | #ifndef __arm__ 423 | ia32_st[__NR_socketcall] = (void *)old_socketcall; 424 | #endif 425 | 426 | enable_page_protection(); 427 | } 428 | 429 | void hook(void) { 430 | disable_page_protection(); 431 | 432 | /* Intel 64 bits and ARM sys_socket */ 433 | #ifndef __i386__ 434 | old_socket = (void *)st[__NR_socket]; 435 | st[__NR_socket] = (void *)new_socket; 436 | #endif 437 | 438 | /* Intel 32 bit (real/emul) sys_socketcall */ 439 | #ifndef __arm__ 440 | old_socketcall = (void *)ia32_st[__NR_socketcall]; 441 | ia32_st[__NR_socketcall] = (void *)new_socketcall; 442 | #endif 443 | 444 | enable_page_protection(); 445 | } 446 | 447 | 448 | static int __init load(void) { 449 | 450 | /* netlink init */ 451 | #if LINUX_VERSION_CODE < KERNEL_VERSION(3,8,0) 452 | laf_netlink = netlink_kernel_create(&init_net, NETLINK_LAF_USR, 0, laf_netlink_recv, NULL, THIS_MODULE); 453 | #else 454 | struct netlink_kernel_cfg cfg = { 455 | .groups = NETLINK_LAF_GRP, 456 | .input = laf_netlink_recv, 457 | }; 458 | 459 | laf_netlink = netlink_kernel_create(&init_net, NETLINK_LAF_USR, &cfg); 460 | #endif 461 | 462 | if (!laf_netlink) { 463 | printk(KERN_ALERT "LAF: Error creating netlink socket. (user: %i group: %x)\n",NETLINK_LAF_USR,NETLINK_LAF_GRP); 464 | return -EFAULT; 465 | } 466 | 467 | /* register sysctl table */ 468 | busy_sysctl_header = register_sysctl_table(kernel_main_table); 469 | if (!busy_sysctl_header) { 470 | netlink_kernel_release(laf_netlink); 471 | printk(KERN_ALERT "LAF: Failed to register kernel_main_table\n"); 472 | return -EFAULT; 473 | } 474 | 475 | /* load the syscall table addr in st */ 476 | st = acquire_sys_call_table(); 477 | 478 | /* load the 32 bit emul sys_table on amd64 or the real 32 sys_table on ia32 */ 479 | #ifdef __x86_64__ 480 | ia32_st = acquire_ia32_sys_call_table(); 481 | #else 482 | ia32_st = st; 483 | #endif 484 | 485 | /* exec syscall hooks */ 486 | hook(); 487 | 488 | printk(KERN_INFO "LAF: Loaded\n"); 489 | 490 | if (DEBUG) 491 | printk(KERN_INFO "LAF: st -> 0x%p - ia32_st -> 0x%p)\n",st,ia32_st); 492 | 493 | return 0; 494 | } 495 | 496 | static void __exit unload(void) { 497 | int i = 0; 498 | 499 | /* restore original syscalls */ 500 | unHook(); 501 | 502 | /* release netlink */ 503 | netlink_kernel_release(laf_netlink); 504 | 505 | /* unregister sysctl table */ 506 | unregister_sysctl_table(busy_sysctl_header); 507 | 508 | /* free all mem */ 509 | for (i=0; i 17 | */ 18 | 19 | #define NETLINK_LAF_USR NETLINK_USERSOCK 20 | #define NETLINK_LAF_GRP 18 21 | 22 | #define BLOCKED -1 23 | #define MAX_WHITELIST 4092 24 | 25 | #define LAF_BLOCK_S 0 26 | #define LAF_ALLOW_S 1 27 | #define LAF_BLOCK_SC 2 28 | #define LAF_ALLOW_SC 3 29 | -------------------------------------------------------------------------------- /laf.service: -------------------------------------------------------------------------------- 1 | [Unit] 2 | Description=LAF - Linux Application Firewall allows only communications made from allowed processes 3 | 4 | [Service] 5 | Type=oneshot 6 | ExecStartPre=/usr/bin/lafctl -u -f /etc/laf.cfg 7 | ExecStart=/usr/bin/lafd 8 | TimeoutSec=0 9 | StandardOutput=tty 10 | RemainAfterExit=yes 11 | SysVStartPriority=1 12 | 13 | [Install] 14 | WantedBy="networking.service" 15 | -------------------------------------------------------------------------------- /lafctl.c: -------------------------------------------------------------------------------- 1 | /* 2 | LAF - Linux Application Firewall (for linux Intel 32 and 64bits and ARM 32 bits) 3 | lafctl (user space control program) 4 | 5 | Copyright 2015-2016 by @sha0coder and @capi_x 6 | 7 | Licensed under GNU General Public License 3.0 or later. 8 | Some rights reserved. See COPYING, AUTHORS. 9 | 10 | @license GPL-3.0 11 | */ 12 | 13 | #include 14 | #include 15 | #include 16 | #include 17 | 18 | #include "laffun.h" 19 | 20 | #define HELP_MSG "Usage: %s [-uged] [-f config_file] [-a [0|1] cmd]\n\nFlags:\n\t-u\t\tUpdate the current LAF config.\n\t-g\t\tGet the current LAF config.\n\t-e\t\tEnable the LAF firewall module\n\t-d\t\tDisable the LAF firewall module\n\t-f config_file\tThe config file path.\n\t-a [0|1] cmd\tAdd command to the whitelist (1 -> similar; 0 -> exact)\n" 21 | 22 | char config_path[MAX_PATH] = "/etc/laf.cfg"; 23 | 24 | int main(int argc, char *argv[]) 25 | { 26 | char *whitelist_exact; 27 | char *whitelist_similar; 28 | char *cmd, *type; 29 | int nls, c, i; 30 | char flag_u = 0, flag_g = 0, flag_a = 0; 31 | 32 | if (argc < 2) { 33 | fprintf(stderr, HELP_MSG, argv[0]); 34 | return EXIT_FAILURE; 35 | } 36 | 37 | while ((c = getopt (argc, argv, "a:f:uged")) != -1) 38 | switch (c) { 39 | case 'f': 40 | strncpy(config_path, optarg, MAX_PATH - 1); 41 | break; 42 | case 'a': 43 | for (i=0; i<10; i++) 44 | if (argv[i] == optarg) 45 | break; 46 | type = argv[i]; 47 | cmd = argv[i+1]; 48 | flag_a = 1; 49 | break; 50 | case 'u': 51 | flag_u = 1; 52 | break; 53 | case 'g': 54 | flag_g = 1; 55 | break; 56 | case 'e': 57 | laf_set_sysctl(1); 58 | break; 59 | case 'd': 60 | laf_set_sysctl(0); 61 | break; 62 | case '?': 63 | fprintf(stderr, HELP_MSG, argv[0]); 64 | return EXIT_FAILURE; 65 | break; 66 | default: 67 | fprintf(stderr, "%s: option -%c is missing a required argument\n", argv[0], optopt); 68 | return EXIT_FAILURE; 69 | break; 70 | } 71 | 72 | /* Add to the whitelist */ 73 | if (flag_a) 74 | laf_add_whitelist(type[0] - 0x30, config_path, cmd); 75 | 76 | /* open socket */ 77 | nls = open_netlink(); 78 | if (nls < 0) 79 | return nls; 80 | 81 | /* send config */ 82 | if (flag_u) { 83 | /* load wl */ 84 | whitelist_exact = malloc(MAX_WL_SIZE); 85 | whitelist_similar = malloc(MAX_WL_SIZE); 86 | 87 | bzero(whitelist_exact, MAX_WL_SIZE); 88 | bzero(whitelist_similar, MAX_WL_SIZE); 89 | 90 | whitelist_exact[0] = '3'; 91 | whitelist_similar[0] = '4'; 92 | 93 | if (read_config(config_path, whitelist_exact, whitelist_similar) < 0) { 94 | close(nls); 95 | return EXIT_FAILURE; 96 | } 97 | 98 | if (DEBUG) { 99 | printf("E: %s\n", whitelist_exact); 100 | printf("S: %s\n", whitelist_similar); 101 | } 102 | 103 | /* send */ 104 | send_event(nls, whitelist_exact); 105 | send_event(nls, whitelist_similar); 106 | 107 | /* free wl */ 108 | free(whitelist_exact); 109 | free(whitelist_similar); 110 | 111 | /* sysctl kernel.laf.enable = 1 */ 112 | laf_set_sysctl(1); 113 | } 114 | 115 | /* get config */ 116 | if (flag_g) { 117 | printf("exact whitelist: \n"); 118 | send_event(nls, "1"); 119 | read_event(nls, MSG_DONTWAIT); 120 | printf("\nsimilar whitelist: \n"); 121 | send_event(nls, "2"); 122 | read_event(nls, MSG_DONTWAIT); 123 | } 124 | 125 | /* close socket */ 126 | close(nls); 127 | 128 | return 0; 129 | } 130 | -------------------------------------------------------------------------------- /lafd.c: -------------------------------------------------------------------------------- 1 | #define DBUS_API_SUBJECT_TO_CHANGE 2 | #include 3 | #include 4 | #include 5 | #include 6 | #include 7 | #include 8 | #include 9 | 10 | #include "laffun.h" 11 | 12 | /** 13 | * Connect to the DBUS bus and send a broadcast signal 14 | */ 15 | void send_signal(DBusConnection *conn, char* sigvalue) 16 | { 17 | DBusMessage* msg; 18 | DBusMessageIter args; 19 | dbus_uint32_t serial = 0; 20 | 21 | if (DEBUG) 22 | printf("Sending signal with value %s\n", sigvalue); 23 | 24 | // create a signal & check for errors 25 | msg = dbus_message_new_signal( "/laf/signal/alert", // object name of the signal 26 | "laf.signal.source", // interface name of the signal 27 | "event"); // name of the signal 28 | if (NULL == msg) 29 | { 30 | fprintf(stderr, "Message Null\n"); 31 | exit(1); 32 | } 33 | 34 | // append arguments onto signal 35 | dbus_message_iter_init_append(msg, &args); 36 | if (!dbus_message_iter_append_basic(&args, DBUS_TYPE_STRING, &sigvalue)) { 37 | fprintf(stderr, "Out Of Memory!\n"); 38 | exit(1); 39 | } 40 | 41 | // send the message and flush the connection 42 | if (!dbus_connection_send(conn, msg, &serial)) { 43 | fprintf(stderr, "Out Of Memory!\n"); 44 | exit(1); 45 | } 46 | dbus_connection_flush(conn); 47 | 48 | if (DEBUG) 49 | printf("Signal Sent\n"); 50 | 51 | // free the message and close the connection 52 | dbus_message_unref(msg); 53 | } 54 | 55 | int main(int argc, char** argv) 56 | { 57 | DBusConnection* conn; 58 | DBusError err; 59 | int ret; 60 | char* buffer; 61 | int nls; 62 | 63 | pid_t pid; 64 | 65 | pid = fork(); 66 | 67 | if (pid < 0) 68 | exit(EXIT_FAILURE); 69 | 70 | if (pid > 0) 71 | exit(EXIT_SUCCESS); 72 | 73 | if (setsid() < 0) 74 | exit(EXIT_FAILURE); 75 | 76 | signal(SIGCHLD, SIG_IGN); 77 | signal(SIGHUP, SIG_IGN); 78 | 79 | pid = fork(); 80 | 81 | if (pid < 0) 82 | exit(EXIT_FAILURE); 83 | 84 | if (pid > 0) 85 | exit(EXIT_SUCCESS); 86 | 87 | // initialise the error value 88 | dbus_error_init(&err); 89 | 90 | // connect to the DBUS system bus, and check for errors 91 | conn = dbus_bus_get(DBUS_BUS_SYSTEM, &err); 92 | if (dbus_error_is_set(&err)) { 93 | fprintf(stderr, "Connection Error (%s)\n", err.message); 94 | dbus_error_free(&err); 95 | } 96 | if (NULL == conn) { 97 | exit(1); 98 | } 99 | 100 | // register our name on the bus, and check for errors 101 | ret = dbus_bus_request_name(conn, "laf.signal.source", DBUS_NAME_FLAG_REPLACE_EXISTING , &err); 102 | if (dbus_error_is_set(&err)) { 103 | fprintf(stderr, "Name Error (%s)\n", err.message); 104 | dbus_error_free(&err); 105 | } 106 | if (DBUS_REQUEST_NAME_REPLY_PRIMARY_OWNER != ret) { 107 | exit(1); 108 | } 109 | 110 | /* open netlink socket */ 111 | nls = open_netlink(); 112 | if (nls < 0) 113 | return nls; 114 | 115 | buffer = malloc(MAX_WL_SIZE); 116 | bzero(buffer,MAX_WL_SIZE); 117 | 118 | while (1) { 119 | read_event_buf(nls, MSG_WAITALL, buffer, MAX_WL_SIZE); 120 | send_signal(conn, buffer); 121 | bzero(buffer,MAX_WL_SIZE); 122 | } 123 | 124 | dbus_connection_close(conn); 125 | free(buffer); 126 | close(nls); 127 | 128 | return 0; 129 | } 130 | 131 | -------------------------------------------------------------------------------- /lafd.conf: -------------------------------------------------------------------------------- 1 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | -------------------------------------------------------------------------------- /laffun.c: -------------------------------------------------------------------------------- 1 | /* 2 | LAF - Linux Application Firewall (for linux Intel 32 and 64bits and ARM 32 bits) 3 | laffun (user space LAF common functions) 4 | 5 | Copyright 2015-2016 by @sha0coder and @capi_x 6 | 7 | Licensed under GNU General Public License 3.0 or later. 8 | Some rights reserved. See COPYING, AUTHORS. 9 | 10 | @license GPL-3.0 11 | */ 12 | 13 | #include 14 | #include 15 | #include 16 | #include 17 | #include 18 | #include 19 | 20 | #include "laf.h" 21 | #include "laffun.h" 22 | 23 | int open_netlink(void) 24 | { 25 | int sock; 26 | struct sockaddr_nl addr; 27 | int group = NETLINK_LAF_GRP; 28 | 29 | sock = socket(AF_NETLINK, SOCK_RAW, NETLINK_LAF_USR); 30 | if (sock < 0) { 31 | fprintf(stderr, "error: can't open socket.\n"); 32 | return -1; 33 | } 34 | 35 | memset((void *) &addr, 0, sizeof(addr)); 36 | addr.nl_family = AF_NETLINK; 37 | addr.nl_pid = getpid(); 38 | 39 | if (bind(sock, (struct sockaddr *) &addr, sizeof(addr)) < 0) { 40 | printf("bind < 0.\n"); 41 | return -1; 42 | } 43 | 44 | if (setsockopt(sock, SOL_NETLINK, NETLINK_ADD_MEMBERSHIP, &group, sizeof(group)) < 0) { 45 | fprintf(stderr, "error: can't open netlink.\n"); 46 | close(sock); 47 | return -1; 48 | } 49 | 50 | return sock; 51 | } 52 | 53 | void send_event(int sock, char *buffer) 54 | { 55 | struct sockaddr_nl nladdr; 56 | struct msghdr msg; 57 | struct iovec iov; 58 | struct nlmsghdr *nlh = NULL; 59 | int buflen = NLMSG_SPACE(strlen(buffer) + 1); 60 | 61 | memset(&msg, 0, sizeof(msg)); 62 | memset(&nlh, 0, sizeof(nlh)); 63 | memset(&nladdr, 0, sizeof(nladdr)); 64 | memset(&nladdr, 0, sizeof(nladdr)); 65 | 66 | nladdr.nl_family = AF_NETLINK; 67 | nladdr.nl_pid = 0; /* 0 = send to Linux kernel */ 68 | nladdr.nl_groups = 0; /* 0 = unicast */ 69 | 70 | nlh = (struct nlmsghdr *)malloc(buflen); 71 | 72 | nlh->nlmsg_len = NLMSG_SPACE(buflen); 73 | nlh->nlmsg_pid = getpid(); 74 | nlh->nlmsg_flags = 0; 75 | 76 | strcpy(NLMSG_DATA(nlh), buffer); 77 | 78 | iov.iov_base = (void *)nlh; 79 | iov.iov_len = nlh->nlmsg_len; 80 | msg.msg_name = (void *) &(nladdr); 81 | msg.msg_namelen = sizeof(nladdr); 82 | msg.msg_iov = &iov; 83 | msg.msg_iovlen = 1; 84 | 85 | if (DEBUG) 86 | printf("sending...\n"); 87 | 88 | sendmsg(sock, &msg, 0); 89 | 90 | return; 91 | } 92 | 93 | void read_event(int sock, int wait) 94 | { 95 | struct sockaddr_nl nladdr; 96 | struct msghdr msg; 97 | struct iovec iov; 98 | char buffer[MAX_WL_NUMB]; 99 | int ret; 100 | 101 | iov.iov_base = (void *) buffer; 102 | iov.iov_len = sizeof(buffer); 103 | msg.msg_name = (void *) &(nladdr); 104 | msg.msg_namelen = sizeof(nladdr); 105 | msg.msg_iov = &iov; 106 | msg.msg_iovlen = 1; 107 | 108 | if (DEBUG) 109 | printf("listening...\n"); 110 | 111 | ret = recvmsg(sock, &msg, wait); 112 | if (ret < 0) 113 | fprintf(stderr, "error: can't recv data.\n"); 114 | else 115 | printf("%s\n", (char *) NLMSG_DATA((struct nlmsghdr *) &buffer)); 116 | } 117 | 118 | void read_event_buf(int sock, int wait, char *buf_in, size_t buf_in_len) 119 | { 120 | struct sockaddr_nl nladdr; 121 | struct msghdr msg; 122 | struct iovec iov; 123 | char buffer[MAX_WL_NUMB]; 124 | int ret; 125 | 126 | iov.iov_base = (void *) buffer; 127 | iov.iov_len = sizeof(buffer); 128 | msg.msg_name = (void *) &(nladdr); 129 | msg.msg_namelen = sizeof(nladdr); 130 | msg.msg_iov = &iov; 131 | msg.msg_iovlen = 1; 132 | 133 | if (DEBUG) 134 | printf("listening...\n"); 135 | 136 | ret = recvmsg(sock, &msg, wait); 137 | if (ret < 0) 138 | fprintf(stderr, "error: can't recv data.\n"); 139 | else 140 | strncpy(buf_in,NLMSG_DATA((struct nlmsghdr *) &buffer),buf_in_len - 1); 141 | } 142 | 143 | int read_config (char *path, char *whitelist_exact, char *whitelist_similar) { 144 | FILE *fp; 145 | char *line = NULL; 146 | size_t len = 0; 147 | ssize_t read; 148 | char flag_exact = 0; 149 | char flag_similar = 0; 150 | int wl_size_e = 0; 151 | int wl_size_s = 0; 152 | 153 | fp = fopen(path, "r"); 154 | if (fp == NULL) { 155 | fprintf(stderr, "error: can't read the file %s\n", path); 156 | return -1; 157 | } 158 | 159 | while ((read = getline(&line, &len, fp)) != -1) { 160 | if (line[0] == ' ' || line[0] == ';' || line[0] == '\n') 161 | continue; 162 | 163 | if (line[0] == '[') { 164 | line[read - 2] = '\0'; 165 | line++; 166 | 167 | if (strcmp(line,"whitelist_exact") == 0) { 168 | flag_exact = 1; 169 | flag_similar = 0; 170 | } 171 | 172 | if (strcmp(line,"whitelist_similar") == 0) { 173 | flag_exact = 0; 174 | flag_similar = 1; 175 | } 176 | 177 | continue; 178 | } 179 | 180 | line[read - 1] = '/'; 181 | 182 | if (wl_size_e + read >= MAX_WL_NUMB - 1 || wl_size_e + read >= MAX_WL_NUMB - 1) { 183 | fprintf(stderr, "error: the section in the config file is more than %i bytes.\n", MAX_WL_NUMB); 184 | fclose(fp); 185 | return -1; 186 | } 187 | 188 | if (flag_exact) { 189 | wl_size_e += read; 190 | strcat(whitelist_exact,line); 191 | } 192 | 193 | if (flag_similar) { 194 | wl_size_s += read; 195 | strcat(whitelist_similar,line); 196 | } 197 | } 198 | 199 | fclose(fp); 200 | 201 | return 0; 202 | } 203 | 204 | int laf_set_sysctl(int status) { 205 | FILE *sys_enable_fp; 206 | sys_enable_fp = fopen("/proc/sys/kernel/laf/enabled", "w"); 207 | 208 | if (sys_enable_fp) { 209 | fprintf(sys_enable_fp, "%i\n%c", status, '\0'); 210 | fclose (sys_enable_fp); 211 | } else 212 | return -1; 213 | 214 | return 0; 215 | } 216 | 217 | 218 | int laf_add_whitelist(int wl_type, char *path, char *cmd) { 219 | FILE *fp_r, *fp_w; 220 | char *line = NULL; 221 | char *buffer; 222 | size_t len = 0; 223 | ssize_t read; 224 | char flag_search = 0; 225 | int f_size = 0; 226 | int f_seek = 0; 227 | int cmd_len = 0, i = 0, ret = 0; 228 | 229 | if (wl_type > 1) 230 | return -1; 231 | 232 | fp_r = fopen(path, "r+"); 233 | if (fp_r == NULL) { 234 | fprintf(stderr, "error: can't read the file %s\n", path); 235 | return -1; 236 | } 237 | 238 | cmd_len = strlen(cmd); 239 | 240 | while ((read = getline(&line, &len, fp_r)) != -1) { 241 | 242 | if (cmd_len == (read -1) && (strncmp(line,cmd,read -1) == 0)) { 243 | fclose(fp_r); 244 | return 1; 245 | } 246 | 247 | if ((strcmp(line,"[whitelist_exact]\n") == 0 && wl_type == 0) || 248 | (strcmp(line,"[whitelist_similar]\n") == 0 && wl_type == 1)) { 249 | f_seek = ftell(fp_r); 250 | } 251 | 252 | } 253 | 254 | fseek(fp_r, 0, SEEK_END); 255 | f_size = ftell(fp_r); 256 | fseek(fp_r, 0, SEEK_SET); 257 | 258 | buffer = malloc((f_size + 1) * sizeof(char)); 259 | ret = fread(buffer, f_size, 1, fp_r); 260 | 261 | fclose(fp_r); 262 | 263 | fp_w = fopen(path, "w+"); 264 | for (i=0; i < f_seek; i++) 265 | fputc(buffer[i],fp_w); 266 | 267 | fprintf(fp_w,"%s\n",cmd); 268 | 269 | for (i=f_seek; i < f_size; i++) 270 | fputc(buffer[i],fp_w); 271 | 272 | fclose(fp_w); 273 | 274 | free(buffer); 275 | 276 | return 0; 277 | } 278 | 279 | -------------------------------------------------------------------------------- /laffun.h: -------------------------------------------------------------------------------- 1 | #include 2 | 3 | /* Linux header file confusion causes this to be undefined. */ 4 | #ifndef SOL_NETLINK 5 | #define SOL_NETLINK 270 6 | #endif 7 | 8 | #define DEBUG 0 9 | #define MAX_PATH 1024 10 | #define MAX_WL_NUMB 10240 11 | #define MAX_WL_SIZE MAX_WL_NUMB * sizeof(char) 12 | #define LAF_DBUS_SERIAL 14731337 13 | 14 | int open_netlink(void); 15 | void send_event(int, char *); 16 | void read_event(int, int); 17 | void read_event_buf( int, int, char *, size_t); 18 | int read_config (char *, char *, char *); 19 | int laf_add_whitelist(int, char *, char *); 20 | int laf_set_sysctl(int); 21 | 22 | -------------------------------------------------------------------------------- /qlaf/COPYING: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 3, 29 June 2007 3 | 4 | Copyright (C) 2007 Free Software Foundation, Inc. 5 | Everyone is permitted to copy and distribute verbatim copies 6 | of this license document, but changing it is not allowed. 7 | 8 | Preamble 9 | 10 | The GNU General Public License is a free, copyleft license for 11 | software and other kinds of works. 12 | 13 | The licenses for most software and other practical works are designed 14 | to take away your freedom to share and change the works. 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No Surrender of Others' Freedom. 541 | 542 | If conditions are imposed on you (whether by court order, agreement or 543 | otherwise) that contradict the conditions of this License, they do not 544 | excuse you from the conditions of this License. If you cannot convey a 545 | covered work so as to satisfy simultaneously your obligations under this 546 | License and any other pertinent obligations, then as a consequence you may 547 | not convey it at all. For example, if you agree to terms that obligate you 548 | to collect a royalty for further conveying from those to whom you convey 549 | the Program, the only way you could satisfy both those terms and this 550 | License would be to refrain entirely from conveying the Program. 551 | 552 | 13. Use with the GNU Affero General Public License. 553 | 554 | Notwithstanding any other provision of this License, you have 555 | permission to link or combine any covered work with a work licensed 556 | under version 3 of the GNU Affero General Public License into a single 557 | combined work, and to convey the resulting work. The terms of this 558 | License will continue to apply to the part which is the covered work, 559 | but the special requirements of the GNU Affero General Public License, 560 | section 13, concerning interaction through a network will apply to the 561 | combination as such. 562 | 563 | 14. Revised Versions of this License. 564 | 565 | The Free Software Foundation may publish revised and/or new versions of 566 | the GNU General Public License from time to time. Such new versions will 567 | be similar in spirit to the present version, but may differ in detail to 568 | address new problems or concerns. 569 | 570 | Each version is given a distinguishing version number. If the 571 | Program specifies that a certain numbered version of the GNU General 572 | Public License "or any later version" applies to it, you have the 573 | option of following the terms and conditions either of that numbered 574 | version or of any later version published by the Free Software 575 | Foundation. 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Interpretation of Sections 15 and 16. 613 | 614 | If the disclaimer of warranty and limitation of liability provided 615 | above cannot be given local legal effect according to their terms, 616 | reviewing courts shall apply local law that most closely approximates 617 | an absolute waiver of all civil liability in connection with the 618 | Program, unless a warranty or assumption of liability accompanies a 619 | copy of the Program in return for a fee. 620 | 621 | END OF TERMS AND CONDITIONS 622 | 623 | How to Apply These Terms to Your New Programs 624 | 625 | If you develop a new program, and you want it to be of the greatest 626 | possible use to the public, the best way to achieve this is to make it 627 | free software which everyone can redistribute and change under these terms. 628 | 629 | To do so, attach the following notices to the program. It is safest 630 | to attach them to the start of each source file to most effectively 631 | state the exclusion of warranty; and each file should have at least 632 | the "copyright" line and a pointer to where the full notice is found. 633 | 634 | LAF - Linux Application Firewall 635 | Copyright (C) 2015-2016 @sha0coder and @capi_x 636 | 637 | This program is free software: you can redistribute it and/or modify 638 | it under the terms of the GNU General Public License as published by 639 | the Free Software Foundation, either version 3 of the License, or 640 | (at your option) any later version. 641 | 642 | This program is distributed in the hope that it will be useful, 643 | but WITHOUT ANY WARRANTY; without even the implied warranty of 644 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 645 | GNU General Public License for more details. 646 | 647 | You should have received a copy of the GNU General Public License 648 | along with this program. If not, see . 649 | 650 | Also add information on how to contact you by electronic and paper mail. 651 | 652 | If the program does terminal interaction, make it output a short 653 | notice like this when it starts in an interactive mode: 654 | 655 | LAF Copyright (C) 2015-2016 @sha0coder and @capi_x 656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 657 | This is free software, and you are welcome to redistribute it 658 | under certain conditions; type `show c' for details. 659 | 660 | The hypothetical commands `show w' and `show c' should show the appropriate 661 | parts of the General Public License. Of course, your program's commands 662 | might be different; for a GUI interface, you would use an "about box". 663 | 664 | You should also get your employer (if you work as a programmer) or school, 665 | if any, to sign a "copyright disclaimer" for the program, if necessary. 666 | For more information on this, and how to apply and follow the GNU GPL, see 667 | . 668 | 669 | The GNU General Public License does not permit incorporating your program 670 | into proprietary programs. If your program is a subroutine library, you 671 | may consider it more useful to permit linking proprietary applications with 672 | the library. If this is what you want to do, use the GNU Lesser General 673 | Public License instead of this License. But first, please read 674 | . 675 | -------------------------------------------------------------------------------- /qlaf/INSTALL: -------------------------------------------------------------------------------- 1 | To build this project you need this dependencies 2 | 3 | * Qt5: 4 | $ apt install qt5-default qdbus-qt5 libqt5dbus5 qt5-qmake policykit-1 5 | 6 | * Qt4: 7 | $ apt-get install qt4-dev-tools qdbus qt4-qmake policykit-1 8 | 9 | Build time! 10 | $ qmake 11 | $ make 12 | $ sudo cp -f qlaf /usr/bin/qlaf 13 | -------------------------------------------------------------------------------- /qlaf/common.h: -------------------------------------------------------------------------------- 1 | #ifndef COMMON_H 2 | #define COMMON_H 3 | 4 | #endif // COMMON_H 5 | 6 | #define LAF_MSG_TIMEOUT 30 7 | #define VERSION "0.1" 8 | #define UNUSED(x) (void)(x) 9 | -------------------------------------------------------------------------------- /qlaf/icons/laf_amber.svg: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 18 | 20 | 40 | 44 | 48 | 52 | 56 | 60 | 64 | 65 | 67 | 68 | 70 | image/svg+xml 71 | 73 | 74 | 75 | 76 | 77 | 82 | 88 | 93 | 100 | 107 | 114 | 121 | 128 | 135 | 142 | 143 | 144 | -------------------------------------------------------------------------------- /qlaf/icons/laf_green.svg: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 18 | 20 | 40 | 44 | 48 | 52 | 56 | 60 | 64 | 65 | 67 | 68 | 70 | image/svg+xml 71 | 73 | 74 | 75 | 76 | 77 | 82 | 88 | 93 | 100 | 107 | 114 | 121 | 128 | 135 | 142 | 143 | 144 | -------------------------------------------------------------------------------- /qlaf/icons/laf_icon.svg: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 18 | 20 | 40 | 44 | 48 | 52 | 56 | 60 | 64 | 65 | 67 | 68 | 70 | image/svg+xml 71 | 73 | 74 | 75 | 76 | 77 | 82 | 88 | 93 | 100 | 107 | 114 | 121 | 128 | 135 | 142 | 143 | 144 | -------------------------------------------------------------------------------- /qlaf/icons/laf_mute_amber.svg: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 18 | 20 | 40 | 44 | 48 | 52 | 56 | 60 | 64 | 65 | 67 | 68 | 70 | image/svg+xml 71 | 73 | 74 | 75 | 76 | 77 | 82 | 88 | 93 | 100 | 107 | 114 | 121 | 128 | 135 | 142 | 145 | 151 | 157 | 158 | 159 | 160 | -------------------------------------------------------------------------------- /qlaf/icons/laf_mute_green.svg: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 18 | 20 | 40 | 44 | 48 | 52 | 56 | 60 | 64 | 65 | 67 | 68 | 70 | image/svg+xml 71 | 73 | 74 | 75 | 76 | 77 | 82 | 88 | 93 | 100 | 107 | 114 | 121 | 128 | 135 | 142 | 145 | 151 | 157 | 158 | 159 | 160 | -------------------------------------------------------------------------------- /qlaf/icons/laf_mute_red.svg: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 18 | 20 | 40 | 44 | 48 | 52 | 56 | 60 | 64 | 65 | 67 | 68 | 70 | image/svg+xml 71 | 73 | 74 | 75 | 76 | 77 | 82 | 88 | 93 | 100 | 107 | 114 | 121 | 128 | 135 | 142 | 145 | 151 | 157 | 158 | 159 | 160 | -------------------------------------------------------------------------------- /qlaf/icons/laf_red.svg: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 18 | 20 | 40 | 44 | 48 | 52 | 56 | 60 | 64 | 65 | 67 | 68 | 70 | image/svg+xml 71 | 73 | 74 | 75 | 76 | 77 | 82 | 88 | 93 | 100 | 107 | 114 | 121 | 128 | 135 | 142 | 143 | 144 | -------------------------------------------------------------------------------- /qlaf/initdbus.cpp: -------------------------------------------------------------------------------- 1 | #include "initdbus.h" 2 | 3 | initDBus::initDBus(QObject *parent) : 4 | QObject(parent) 5 | { 6 | } 7 | 8 | void initDBus::setup() 9 | { 10 | //signal sender=:1.68 -> dest=(null destination) serial=10 path=/laf/signal/alert; interface=laf.signal.source; member=event 11 | // string "/2/0/kk/5710/5710/bash/1438" 12 | 13 | QDBusConnection bus = QDBusConnection::systemBus(); 14 | 15 | if (bus.isConnected()) 16 | qDebug() << "bus: connected"; 17 | else 18 | fprintf(stderr, "Cannot connect to the D-Bus session bus.\n" 19 | "To start it, run:\n" 20 | "\teval `dbus-launch --auto-syntax`\n"); 21 | 22 | bool conn = bus.connect("laf.signal.source","/laf/signal/alert","laf.signal.source","event",this,SLOT(recvSlot(QString))); 23 | 24 | if (!conn) qDebug() << "conn: not connected"; 25 | } 26 | 27 | void initDBus::recvSlot(QString event) 28 | { 29 | emit recvEvent(event); 30 | } 31 | -------------------------------------------------------------------------------- /qlaf/initdbus.h: -------------------------------------------------------------------------------- 1 | #ifndef INITDBUS_H 2 | #define INITDBUS_H 3 | 4 | #include 5 | #include 6 | #include 7 | #include 8 | #include 9 | #include 10 | 11 | #include "common.h" 12 | 13 | class initDBus : public QObject 14 | { 15 | Q_OBJECT 16 | public: 17 | explicit initDBus(QObject *parent = 0); 18 | void setup(); 19 | QSystemTrayIcon *trayIcon; 20 | QTableWidget *table; 21 | 22 | signals: 23 | void recvEvent(QString); 24 | 25 | public slots: 26 | void recvSlot(QString); 27 | 28 | }; 29 | 30 | #endif // INITDBUS_H 31 | -------------------------------------------------------------------------------- /qlaf/main.cpp: -------------------------------------------------------------------------------- 1 | 2 | #include 3 | 4 | #include "window.h" 5 | #include "initdbus.h" 6 | 7 | int main(int argc, char *argv[]) 8 | { 9 | Q_INIT_RESOURCE(systray); 10 | 11 | QApplication app(argc, argv); 12 | QApplication::setQuitOnLastWindowClosed(false); 13 | 14 | Window window; 15 | window.setWindowIcon(QIcon(":/icons/laf_icon.svg")); 16 | window.setWindowTitle("qLAF - Linux Application Firewall"); 17 | 18 | initDBus dbus; 19 | dbus.setup(); 20 | 21 | QObject::connect(&dbus, SIGNAL(recvEvent(QString)), &window, SLOT(addEvent(QString))); 22 | 23 | return app.exec(); 24 | } 25 | -------------------------------------------------------------------------------- /qlaf/qlaf.pro: -------------------------------------------------------------------------------- 1 | QT += core gui dbus 2 | 3 | greaterThan(QT_MAJOR_VERSION, 4): QT += widgets 4 | 5 | TARGET = qlaf 6 | TEMPLATE = app 7 | 8 | 9 | SOURCES += \ 10 | main.cpp \ 11 | window.cpp \ 12 | initdbus.cpp 13 | 14 | HEADERS += \ 15 | window.h \ 16 | initdbus.h \ 17 | common.h 18 | 19 | RESOURCES += \ 20 | systray.qrc 21 | 22 | FORMS += 23 | -------------------------------------------------------------------------------- /qlaf/systray.qrc: -------------------------------------------------------------------------------- 1 | 2 | 3 | icons/laf_mute_green.svg 4 | icons/laf_mute_amber.svg 5 | icons/laf_mute_red.svg 6 | icons/laf_green.svg 7 | icons/laf_amber.svg 8 | icons/laf_red.svg 9 | icons/laf_icon.svg 10 | 11 | 12 | -------------------------------------------------------------------------------- /qlaf/window.cpp: -------------------------------------------------------------------------------- 1 | #include "window.h" 2 | 3 | Window::Window(QWidget *parent) : 4 | QWidget(parent) 5 | { 6 | // Tray unmuted by default 7 | trayMuted = 0; 8 | 9 | createActions(); 10 | createTrayIcon(); 11 | 12 | connect(trayIcon, SIGNAL(messageClicked()), this, SLOT(messageClicked())); 13 | connect(trayIcon, SIGNAL(activated(QSystemTrayIcon::ActivationReason)), 14 | this, SLOT(iconActivated(QSystemTrayIcon::ActivationReason))); 15 | 16 | updateIcon(); 17 | trayIcon->show(); 18 | 19 | QVBoxLayout *layout = new QVBoxLayout(this); 20 | QToolBar *toolbar = new QToolBar; 21 | QLabel *label = new QLabel; 22 | 23 | table = new QTableWidget(0,8); 24 | table->setColumnWidth(0,160); 25 | table->setColumnWidth(1,60); 26 | table->setColumnWidth(2,60); 27 | table->setColumnWidth(3,180); 28 | table->setColumnWidth(4,60); 29 | table->setColumnWidth(5,60); 30 | table->setColumnWidth(6,180); 31 | table->setColumnWidth(7,60); 32 | 33 | label->setText(tr("Event Log")); 34 | this->resize(900,500); 35 | 36 | layout->addWidget(toolbar); 37 | layout->addWidget(label); 38 | layout->addWidget(table); 39 | 40 | QStringList header; 41 | header << tr("Date") << tr("Family") << tr("Protocol") << tr("Command") << "PID" << "TID" << tr("Parent") << "PPID"; 42 | table->setHorizontalHeaderLabels(header); 43 | 44 | qDebug() << "Program started!"; 45 | } 46 | 47 | Window::~Window() 48 | { 49 | } 50 | 51 | void Window::addEvent(QString event) 52 | { 53 | QString fam = event.split('/')[1]; 54 | QString proto = event.split('/')[2]; 55 | QString cmd = event.split('/')[3]; 56 | QString pid = event.split('/')[4]; 57 | QString tid = event.split('/')[5]; 58 | QString pcmd = event.split('/')[6]; 59 | QString ppid = event.split('/')[7]; 60 | 61 | QString text; 62 | text.append("FAM: "); 63 | text.append(fam); 64 | text.append(" PROTO: "); 65 | text.append(proto); 66 | text.append(" CMD: "); 67 | text.append(cmd); 68 | text.append(" ("); 69 | text.append(pid); 70 | text.append(") PCMD: "); 71 | text.append(pcmd); 72 | text.append(" ("); 73 | text.append(ppid); 74 | text.append(")"); 75 | 76 | trayIcon->setObjectName(pid + "/" + tid + "/" + cmd); 77 | if (!trayMuted) 78 | trayIcon->showMessage("Application networking blocked", text, QSystemTrayIcon::Warning, LAF_MSG_TIMEOUT * 1000); 79 | 80 | // Amber icon until timeout 81 | setIcon(2); 82 | QTimer::singleShot(LAF_MSG_TIMEOUT * 1000, this, SLOT(updateIcon())); 83 | 84 | table->insertRow(0); 85 | for (int rc = 0; rc < 8; rc++) { 86 | table->setItem(0,rc,new QTableWidgetItem()); 87 | table->item(0,rc)->setFlags(Qt::ItemIsEnabled); 88 | } 89 | 90 | table->item(0,0)->setText(QTime::currentTime().toString() + " " + QDate::currentDate().toString(Qt::ISODate)); 91 | table->item(0,1)->setText(fam); 92 | table->item(0,2)->setText(proto); 93 | table->item(0,3)->setText(cmd); 94 | table->item(0,4)->setText(pid); 95 | table->item(0,5)->setText(tid); 96 | table->item(0,6)->setText(pcmd); 97 | table->item(0,7)->setText(ppid); 98 | 99 | connect(table, SIGNAL(cellDoubleClicked(int, int)), this, SLOT(addItemWhitelist(int, int)),Qt::UniqueConnection); 100 | } 101 | 102 | void Window::setStatus_on() { 103 | setStatus(1); 104 | } 105 | 106 | void Window::setStatus_off() { 107 | setStatus(0); 108 | } 109 | 110 | void Window::setMute_on() { 111 | // trayIcon->showMessage("LAF", "Notifications muted", QSystemTrayIcon::Information, LAF_MSG_TIMEOUT * 100); 112 | trayMuted = 1; 113 | updateIcon(); 114 | muteAction->setEnabled(0); 115 | unmuteAction->setEnabled(1); 116 | } 117 | 118 | void Window::setMute_off() { 119 | // trayIcon->showMessage("LAF", "Notifications unmuted", QSystemTrayIcon::Information, LAF_MSG_TIMEOUT * 100); 120 | trayMuted = 0; 121 | updateIcon(); 122 | muteAction->setEnabled(1); 123 | unmuteAction->setEnabled(0); 124 | } 125 | 126 | void Window::setStatus(int status) { 127 | 128 | QString program = "pkexec"; 129 | QStringList arguments; 130 | QProcess *myProcess = new QProcess(this); 131 | 132 | arguments << "lafctl"; 133 | if (status) 134 | arguments << "-d"; 135 | else 136 | arguments << "-e"; 137 | 138 | myProcess->start(program, arguments); 139 | connect(myProcess, SIGNAL(finished(int, QProcess::ExitStatus)), this, SLOT(updateIcon())); 140 | } 141 | 142 | void Window::showAbout() 143 | { 144 | QMessageBox::about(this, "qLAF", "

qLAF " VERSION "

LAF (Linux Application Firewall) is a kernel driver that blocks network sockets, allowing only whitelisted process to connect to the LAN and the Internet. This project is licensed under the GPLv3 license.
More information in the project page.

2015-2016 (c) @sha0coder and @capi_x

"); 145 | } 146 | 147 | void Window::updateIcon() 148 | { 149 | setIcon(getStatus()); 150 | } 151 | 152 | void Window::setIcon(int iconNum) 153 | { 154 | switch (iconNum) 155 | { 156 | case 0: 157 | if (trayMuted) 158 | trayIcon->setIcon(QPixmap(":/icons/laf_mute_red.svg")); 159 | else 160 | trayIcon->setIcon(QPixmap(":/icons/laf_red.svg")); 161 | 162 | enableAction->setEnabled(1); 163 | disableAction->setEnabled(0); 164 | 165 | break; 166 | case 2: 167 | if (trayMuted) 168 | trayIcon->setIcon(QPixmap(":/icons/laf_mute_amber.svg")); 169 | else 170 | trayIcon->setIcon(QPixmap(":/icons/laf_amber.svg")); 171 | break; 172 | case 1: 173 | default: 174 | if (trayMuted) 175 | trayIcon->setIcon(QPixmap(":/icons/laf_mute_green.svg")); 176 | else 177 | trayIcon->setIcon(QPixmap(":/icons/laf_green.svg")); 178 | 179 | enableAction->setEnabled(0); 180 | disableAction->setEnabled(1); 181 | break; 182 | } 183 | } 184 | 185 | int Window::getStatus() 186 | { 187 | int ret = 0; 188 | 189 | QFile file("/proc/sys/kernel/laf/enabled"); 190 | if(!file.open(QIODevice::ReadOnly)) { 191 | QMessageBox::information(0, "error", file.errorString()); 192 | } 193 | QTextStream in(&file); 194 | 195 | ret = in.read(1).toInt(); 196 | 197 | file.close(); 198 | 199 | return ret; 200 | } 201 | 202 | void Window::updateWhitelist() 203 | { 204 | QString program = "pkexec"; 205 | QStringList arguments; 206 | QProcess *myProcess = new QProcess(this); 207 | 208 | arguments << "lafctl" << "-u"; 209 | myProcess->start(program, arguments); 210 | 211 | connect(myProcess, SIGNAL(finished(int, QProcess::ExitStatus)), this, SLOT(updateWhitelist_slot())); 212 | } 213 | 214 | void Window::createActions() 215 | { 216 | enableAction = new QAction(tr("&Enable LAF"), this); 217 | connect(enableAction, SIGNAL(triggered()), this, SLOT(setStatus_off())); 218 | 219 | disableAction = new QAction(tr("&Disable LAF"), this); 220 | connect(disableAction, SIGNAL(triggered()), this, SLOT(setStatus_on())); 221 | 222 | muteAction = new QAction(tr("&Mute LAF"), this); 223 | connect(muteAction, SIGNAL(triggered()), this, SLOT(setMute_on())); 224 | 225 | unmuteAction = new QAction(tr("U&nmute LAF"), this); 226 | connect(unmuteAction, SIGNAL(triggered()), this, SLOT(setMute_off())); 227 | 228 | updateAction = new QAction(tr("&Update whitelist"), this); 229 | connect(updateAction, SIGNAL(triggered()), this, SLOT(updateWhitelist())); 230 | 231 | aboutAction = new QAction(tr("&About"), this); 232 | connect(aboutAction, SIGNAL(triggered()), this, SLOT(showAbout())); 233 | 234 | quitAction = new QAction(tr("&Quit"), this); 235 | connect(quitAction, SIGNAL(triggered()), qApp, SLOT(quit())); 236 | } 237 | 238 | void Window::createTrayIcon() 239 | { 240 | trayIconMenu = new QMenu(this); 241 | 242 | trayIconMenu->addAction(enableAction); 243 | trayIconMenu->addAction(disableAction); 244 | trayIconMenu->addSeparator(); 245 | 246 | trayIconMenu->addAction(muteAction); 247 | trayIconMenu->addAction(unmuteAction); 248 | unmuteAction->setEnabled(0); 249 | trayIconMenu->addSeparator(); 250 | 251 | trayIconMenu->addAction(updateAction); 252 | trayIconMenu->addSeparator(); 253 | 254 | trayIconMenu->addAction(aboutAction); 255 | trayIconMenu->addAction(quitAction); 256 | 257 | trayIcon = new QSystemTrayIcon(this); 258 | trayIcon->setContextMenu(trayIconMenu); 259 | } 260 | 261 | void Window::messageClicked() 262 | { 263 | if (trayIcon->objectName().length() == 0) 264 | return; 265 | 266 | int pid = trayIcon->objectName().split('/')[0].toInt(); 267 | int tid = trayIcon->objectName().split('/')[1].toInt(); 268 | QString cmd = trayIcon->objectName().split('/')[2]; 269 | 270 | QString text = QString(tr("Do you want add \"%1\" to the whitelist?").arg(cmd)); 271 | int ret = QMessageBox::question(0, tr("Add program to the whitelist"), text, QMessageBox::Yes, QMessageBox::No); 272 | 273 | if(ret == QMessageBox::Yes) { 274 | if (pid == tid) 275 | addWhitelist(0,cmd); 276 | else 277 | addWhitelist(1,cmd); 278 | } 279 | } 280 | 281 | void Window::addItemWhitelist(int x, int y) 282 | { 283 | int pid = table->item(x, 4)->text().toInt(); 284 | int tid = table->item(x, 5)->text().toInt(); 285 | QString cmd = table->item(x, 3)->text(); 286 | UNUSED(y); 287 | 288 | QString text = QString(tr("Do you want add \"%1\" to the whitelist?").arg(cmd)); 289 | int ret = QMessageBox::question(0, tr("Add program to the whitelist"), text, QMessageBox::Yes, QMessageBox::No); 290 | 291 | if(ret == QMessageBox::Yes) { 292 | if (pid == tid) 293 | addWhitelist(0,cmd); 294 | else 295 | addWhitelist(1,cmd); 296 | } 297 | } 298 | 299 | void Window::addWhitelist(int similar, QString cmd) 300 | { 301 | QString program = "pkexec"; 302 | QStringList arguments; 303 | QProcess *myProcess = new QProcess(this); 304 | 305 | if (similar) 306 | arguments << "lafctl" << "-a" << "1" << cmd << "-u"; 307 | else 308 | arguments << "lafctl" << "-a" << "0" << cmd << "-u"; 309 | 310 | myProcess->start(program, arguments); 311 | } 312 | 313 | void Window::iconActivated(QSystemTrayIcon::ActivationReason reason) 314 | { 315 | 316 | switch (reason) { 317 | case QSystemTrayIcon::Trigger: 318 | // case QSystemTrayIcon::DoubleClick: 319 | if (this->isVisible()) 320 | this->hide(); 321 | else 322 | this->show(); 323 | 324 | break; 325 | case QSystemTrayIcon::MiddleClick: 326 | if (trayMuted) 327 | setMute_off(); 328 | else 329 | setMute_on(); 330 | break; 331 | default: 332 | break; 333 | } 334 | 335 | } 336 | -------------------------------------------------------------------------------- /qlaf/window.h: -------------------------------------------------------------------------------- 1 | #ifndef WINDOW_H 2 | #define WINDOW_H 3 | 4 | #include 5 | #include 6 | #include 7 | #include 8 | #include 9 | #include 10 | #include 11 | #include 12 | #include 13 | #include 14 | #include 15 | #include 16 | #include 17 | #include 18 | #include 19 | #include 20 | #include 21 | #include 22 | #include 23 | #include 24 | #include 25 | 26 | #include "common.h" 27 | 28 | class Window : public QWidget 29 | { 30 | Q_OBJECT 31 | public: 32 | explicit Window(QWidget *parent = 0); 33 | ~Window(); 34 | QSystemTrayIcon *trayIcon; 35 | QTableWidget *table; 36 | bool trayMuted; 37 | 38 | signals: 39 | 40 | public slots: 41 | void addEvent(QString); 42 | 43 | private slots: 44 | void iconActivated(QSystemTrayIcon::ActivationReason); 45 | void messageClicked(); 46 | void setStatus_on(); 47 | void setStatus_off(); 48 | void setStatus(int); 49 | void setMute_on(); 50 | void setMute_off(); 51 | void updateWhitelist(); 52 | void showAbout(); 53 | void updateIcon(); 54 | void setIcon(int); 55 | void addWhitelist(int, QString); 56 | void addItemWhitelist(int, int); 57 | int getStatus(); 58 | 59 | private: 60 | void createTrayIcon(); 61 | void createActions(); 62 | 63 | QAction *disableAction; 64 | QAction *enableAction; 65 | QAction *muteAction; 66 | QAction *unmuteAction; 67 | QAction *aboutAction; 68 | QAction *updateAction; 69 | QAction *quitAction; 70 | QMenu *trayIconMenu; 71 | }; 72 | 73 | #endif // WINDOW_H 74 | -------------------------------------------------------------------------------- /scripts/premake.sh: -------------------------------------------------------------------------------- 1 | #!/bin/sh 2 | 3 | SYSADDR=$(grep ia32_sys_call_table /boot/System.map-`uname -r` | cut -d ' ' -f 1) 4 | echo "#define SYSCALL_IA32_ADDR 0x$SYSADDR" > ia32_addr.h 5 | --------------------------------------------------------------------------------