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initialize rand seed with nano-second granularity

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in scenarios where one is to spin up several processes with the same
proxy list in random mode, all processes started in the same second
would pick the same proxy due to using the same srand() seed.

closes #380
This commit is contained in:
rofl0r 2021-05-14 14:10:14 +00:00
parent 6af2686a52
commit 092d7042e0
2 changed files with 14 additions and 1 deletions
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3
configure vendored
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@ -165,6 +165,9 @@ check_compile 'whether we have pipe2() and O_CLOEXEC' "-DHAVE_PIPE2" \
check_compile 'whether we have SOCK_CLOEXEC' "-DHAVE_SOCK_CLOEXEC" \
'#define _GNU_SOURCE\n#include <sys/socket.h>\nint main() {\nreturn socket(AF_INET, SOCK_DGRAM|SOCK_CLOEXEC, 0);}'
check_compile 'whether we have clock_gettime' "-DHAVE_CLOCK_GETTIME" \
'#define _GNU_SOURCE\n#include <time.h>\nint main() {\nstruct timespec now;clock_gettime(CLOCK_REALTIME, &now);\nreturn now.tv_sec ^ now.tv_nsec;}'
check_define __APPLE__ && {
mac_detected=true
check_define __x86_64__ && mac_64=true

12
src/libproxychains.c
View File

@ -127,8 +127,18 @@ static void setup_hooks(void) {
static int close_fds[16];
static int close_fds_cnt = 0;
static unsigned get_rand_seed(void) {
#ifdef HAVE_CLOCK_GETTIME
struct timespec now;
clock_gettime(CLOCK_REALTIME, &now);
return now.tv_sec ^ now.tv_nsec;
#else
return time(NULL);
#endif
}
static void do_init(void) {
srand(time(NULL));
srand(get_rand_seed());
core_initialize();
/* read the config file */