-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
Hi --
> The CVS version contains the new thread handling code, would be cool,
> if you could give that a try.
Sorry I didn't get back to you sooner. I was trying to fight through
some
packaging issues in order to get a release out for my project.
I tried using v1.1.43 with Ultramagnetic and unfortunately, I still have
the same problem. After GTK/GDK threads are initialized, libgcrypt
hangs randomly inside some pthread functions. I'm absolutely certain
this
is libgcrypt's fault because it does not misbehave if I disable
HAVE_PTHREAD in config.h.
Its worthy to mention that these hangs sometimes occur when calling
g_mutex_lock() from my own code. This suggests that libgcrypt is somehow
handling pthreads in a very instable way, though I'm too pressed for
time
to examine it more fully.
Below is a complete program which reproduces this deadlock issue with
the
latest v1.1.43.
- low halo
- ---- SNIP ----
/* Licensed under the GPL v2.0. */
/* Compile with:
* gcc -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include \
* -I/usr/include/gtk-2.0 -I/usr/lib/gtk-2.0/include -o main main.c
\
* `gtk-config --libs` `glib-config --libs` -pthread -lglib-2.0
* -lgmodule-2.0 -lgobject-2.0 -lgthread-2.0 -lgtk-x11-2.0 -lgcrypt
*/
#include <stdio.h>
#include <glib.h>
#include <gcrypt.h>
#define REQUIRED_LIBGCRYPT_VERSION "1.1.43"
gcry_sexp_t *key = NULL;
GMutex *mutex = NULL;
gpointer thread_function(gpointer nothing);
void init_gcrypt(void);
void perform_gcrypt_function(void);
void generate_key(void);
int main(int ac, char **av) {
int i = 0;
GThread *thread = NULL;
init_gcrypt();
g_thread_init(NULL);
gdk_threads_init();
generate_key();
mutex = g_mutex_new();
thread = g_thread_create(&thread_function, NULL, FALSE, NULL);
while(1) {
g_mutex_lock(mutex);
if (rand() % 13 == 0)
sleep(1);
perform_gcrypt_function();
printf("tick: %d\n", i++);
g_mutex_unlock(mutex);
}
return 0;
}
void init_gcrypt(void) {
if (!gcry_control(GCRYCTL_ANY_INITIALIZATION_P)) {
if (!gcry_check_version(REQUIRED_LIBGCRYPT_VERSION)) {
printf("ERROR: this version of ultramagnetic requires libgcrypt
v%s. "
"You only have v%s.\n", REQUIRED_LIBGCRYPT_VERSION,
gcry_check_version(NULL));
exit(1);
}
gcry_control(GCRYCTL_INIT_SECMEM, 1024 * 1024 * 3);
gcry_control(GCRYCTL_INITIALIZATION_FINISHED);
}
printf("libgcrypt v%s initialized.\n", gcry_check_version(NULL));
}
void generate_key(void) {
gcry_sexp_t params;
key = g_new0(gcry_sexp_t, 1);
printf("Generating key...");
fflush(stdout);
gcry_sexp_build(¶ms, NULL, "(genkey(elg(nbits %d)))", 512);
if (gcry_pk_genkey(key, params) != 0) {
printf("Error generating key.\n");
exit(1);
}
printf("done.\n");
}
gpointer thread_function(gpointer nothing) {
int j = 0;
while(1) {
g_mutex_lock(mutex);
if (rand() % 7 == 0)
sleep(1);
printf("tock: %d\n", j++);
g_mutex_unlock(mutex);
}
}
void perform_gcrypt_function(void) {
gcry_mpi_t an_mpi;
gcry_sexp_t an_sexp, encrypted_sexp;
int err = 0;
unsigned char buffer[] = "Encrypt this!";
int buffer_len = strlen(buffer);
gcry_error_t ret;
if (gcry_mpi_scan(&an_mpi, GCRYMPI_FMT_USG, buffer, buffer_len, NULL)
printf("gcry_mpi_scan failed.\n");
exit(1);
}
if (gcry_sexp_build(&an_sexp, &err,
"(data(flags)(value %m))", an_mpi) != 0) {
printf("gcry_sexp_build failed.\n");
exit(1);
}
if ((ret = gcry_pk_encrypt(&encrypted_sexp, an_sexp, *key)) != 0) {
printf("encryption failed: %s\n", gcry_strerror(ret));
exit(1);
}
}
- ---- SNIP ----
- --
low halo <lowhalo at-s1gn hush d0t c0m>
Defender of Truth and Liberty
http://ultramagnetic.sourceforge.net/
http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x9BFD99BF
58CE 3215 226A 69ED 4D20 4044 C925 54F9 9BFD 99BF
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iD8DBQE/W6K+ySVU+Zv9mb8RAgNQAJwI7aIq3soMMEnW/I5cPG5kxxHPNwCgpvKM
9AkC0OZ5TuQ6qAI/L/gqIhw=
=2u+S
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Hash: SHA1
Hi --
> The CVS version contains the new thread handling code, would be cool,
> if you could give that a try.
Sorry I didn't get back to you sooner. I was trying to fight through
some
packaging issues in order to get a release out for my project.
I tried using v1.1.43 with Ultramagnetic and unfortunately, I still have
the same problem. After GTK/GDK threads are initialized, libgcrypt
hangs randomly inside some pthread functions. I'm absolutely certain
this
is libgcrypt's fault because it does not misbehave if I disable
HAVE_PTHREAD in config.h.
Its worthy to mention that these hangs sometimes occur when calling
g_mutex_lock() from my own code. This suggests that libgcrypt is somehow
handling pthreads in a very instable way, though I'm too pressed for
time
to examine it more fully.
Below is a complete program which reproduces this deadlock issue with
the
latest v1.1.43.
- low halo
- ---- SNIP ----
/* Licensed under the GPL v2.0. */
/* Compile with:
* gcc -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include \
* -I/usr/include/gtk-2.0 -I/usr/lib/gtk-2.0/include -o main main.c
\
* `gtk-config --libs` `glib-config --libs` -pthread -lglib-2.0
* -lgmodule-2.0 -lgobject-2.0 -lgthread-2.0 -lgtk-x11-2.0 -lgcrypt
*/
#include <stdio.h>
#include <glib.h>
#include <gcrypt.h>
#define REQUIRED_LIBGCRYPT_VERSION "1.1.43"
gcry_sexp_t *key = NULL;
GMutex *mutex = NULL;
gpointer thread_function(gpointer nothing);
void init_gcrypt(void);
void perform_gcrypt_function(void);
void generate_key(void);
int main(int ac, char **av) {
int i = 0;
GThread *thread = NULL;
init_gcrypt();
g_thread_init(NULL);
gdk_threads_init();
generate_key();
mutex = g_mutex_new();
thread = g_thread_create(&thread_function, NULL, FALSE, NULL);
while(1) {
g_mutex_lock(mutex);
if (rand() % 13 == 0)
sleep(1);
perform_gcrypt_function();
printf("tick: %d\n", i++);
g_mutex_unlock(mutex);
}
return 0;
}
void init_gcrypt(void) {
if (!gcry_control(GCRYCTL_ANY_INITIALIZATION_P)) {
if (!gcry_check_version(REQUIRED_LIBGCRYPT_VERSION)) {
printf("ERROR: this version of ultramagnetic requires libgcrypt
v%s. "
"You only have v%s.\n", REQUIRED_LIBGCRYPT_VERSION,
gcry_check_version(NULL));
exit(1);
}
gcry_control(GCRYCTL_INIT_SECMEM, 1024 * 1024 * 3);
gcry_control(GCRYCTL_INITIALIZATION_FINISHED);
}
printf("libgcrypt v%s initialized.\n", gcry_check_version(NULL));
}
void generate_key(void) {
gcry_sexp_t params;
key = g_new0(gcry_sexp_t, 1);
printf("Generating key...");
fflush(stdout);
gcry_sexp_build(¶ms, NULL, "(genkey(elg(nbits %d)))", 512);
if (gcry_pk_genkey(key, params) != 0) {
printf("Error generating key.\n");
exit(1);
}
printf("done.\n");
}
gpointer thread_function(gpointer nothing) {
int j = 0;
while(1) {
g_mutex_lock(mutex);
if (rand() % 7 == 0)
sleep(1);
printf("tock: %d\n", j++);
g_mutex_unlock(mutex);
}
}
void perform_gcrypt_function(void) {
gcry_mpi_t an_mpi;
gcry_sexp_t an_sexp, encrypted_sexp;
int err = 0;
unsigned char buffer[] = "Encrypt this!";
int buffer_len = strlen(buffer);
gcry_error_t ret;
if (gcry_mpi_scan(&an_mpi, GCRYMPI_FMT_USG, buffer, buffer_len, NULL)
printf("gcry_mpi_scan failed.\n");
exit(1);
}
if (gcry_sexp_build(&an_sexp, &err,
"(data(flags)(value %m))", an_mpi) != 0) {
printf("gcry_sexp_build failed.\n");
exit(1);
}
if ((ret = gcry_pk_encrypt(&encrypted_sexp, an_sexp, *key)) != 0) {
printf("encryption failed: %s\n", gcry_strerror(ret));
exit(1);
}
}
- ---- SNIP ----
- --
low halo <lowhalo at-s1gn hush d0t c0m>
Defender of Truth and Liberty
http://ultramagnetic.sourceforge.net/
http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x9BFD99BF
58CE 3215 226A 69ED 4D20 4044 C925 54F9 9BFD 99BF
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Version: GnuPG v1.2.2 (GNU/Linux)
iD8DBQE/W6K+ySVU+Zv9mb8RAgNQAJwI7aIq3soMMEnW/I5cPG5kxxHPNwCgpvKM
9AkC0OZ5TuQ6qAI/L/gqIhw=
=2u+S
-----END PGP SIGNATURE-----
Concerned about your privacy? Follow this link to get
FREE encrypted email: https://www.hushmail.com/?l=2
Free, ultra-private instant messaging with Hush Messenger
https://www.hushmail.com/services.php?subloc=messenger&l=434
Promote security and make money with the Hushmail Affiliate Program:
https://www.hushmail.com/about.php?subloc=affiliate&l=427