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merge of 6b56bdff53b47ae7366d93b496ce353d9e3753dc

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and b68c53583ba80ad14fd0ba70ff26ea3dbd8e8823

--HG--
extra : convert_revision : 0a69485db882269664dcd5ec88e66b8ea9570855
This commit is contained in:
Matt Johnston
2005-05-05 04:00:10 +00:00
parent cf585ba1de b952231df1
commit 68445e1e34
3 changed files with 20 additions and 4 deletions
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19
random.c
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@@ -51,6 +51,7 @@ static void readrand(unsigned char* buf, unsigned int buflen);
static void readrand(unsigned char* buf, unsigned int buflen) {
static int already_blocked = 0;
int readfd;
unsigned int readpos;
int readlen;
@@ -93,6 +94,24 @@ static void readrand(unsigned char* buf, unsigned int buflen) {
/* read the actual random data */
readpos = 0;
do {
if (!already_blocked)
{
int ret;
struct timeval timeout;
fd_set read_fds;
timeout.tv_sec = 2; /* two seconds should be enough */
timeout.tv_usec = 0;
FD_ZERO(&read_fds);
FD_SET(readfd, &read_fds);
ret = select(readfd + 1, &read_fds, NULL, NULL, &timeout);
if (ret == 0)
{
dropbear_log(LOG_INFO, "Warning: Reading the random source seems to have blocked.\nIf you experience problems, you probably need to find a better entropy source.");
already_blocked = 1;
}
}
readlen = read(readfd, &buf[readpos], buflen - readpos);
if (readlen <= 0) {
if (readlen < 0 && errno == EINTR) {