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/* newseed.c: The opienewseed() library function.
%%% copyright-cmetz-96
This software is Copyright 1996-1997 by Craig Metz, All Rights Reserved.
The Inner Net License Version 2 applies to this software.
You should have received a copy of the license with this software. If
you didn't get a copy, you may request one from <license@inner.net>.
History:
Modified by cmetz for OPIE 2.31. Added time.h.
Created by cmetz for OPIE 2.22.
*/
#include "opie_cfg.h"
#if HAVE_TIME_H
#include <time.h>
#endif /* HAVE_TIME_H */
#if HAVE_STRING_H
#include <string.h>
#endif /* HAVE_STRING_H */
#include <ctype.h>
#if HAVE_UNISTD_H
#include <unistd.h>
#endif /* HAVE_UNISTD_H */
#if HAVE_SYS_UTSNAME_H
#include <sys/utsname.h>
#endif /* HAVE_SYS_UTSNAME_H */
#include <errno.h>
#include "opie.h"
int opienewseed FUNCTION((seed), char *seed)
{
if (!seed)
return -1;
if (seed[0]) {
int i;
if ((i = strlen(seed)) >= OPIE_SEED_MIN) {
long j;
char *c;
if (i > OPIE_SEED_MAX)
i = OPIE_SEED_MAX;
c = seed + i - 1;
while(c != seed) {
if (!isdigit(*c))
break;
c--;
}
c++;
if (j = strtol(c, (char **)0, 10)) {
char buf[OPIE_SEED_MAX];
*c = 0;
strcpy(buf, seed);
if (errno == ERANGE) {
j = 1;
} else {
int k = 1, l = OPIE_SEED_MAX - strlen(buf);
while(l--) k *= 10;
if (++j >= k)
j = 1;
}
sprintf(seed, "%s%04d", buf, j);
return 0;
}
}
}
{
{
time_t now;
time(&now);
srand(now);
}
{
struct utsname utsname;
if (uname(&utsname) < 0) {
#if 0
perror("uname");
#endif /* 0 */
utsname.nodename[0] = 'k';
utsname.nodename[1] = 'e';
}
utsname.nodename[2] = 0;
sprintf(seed, "%s%04d", utsname.nodename, (rand() % 9999) + 1);
return 0;
}
}
}
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