110 lines
1.9 KiB
C
110 lines
1.9 KiB
C
/* newseed.c: The opienewseed() library function.
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%%% copyright-cmetz-96
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This software is Copyright 1996-1998 by Craig Metz, All Rights Reserved.
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The Inner Net License Version 2 applies to this software.
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You should have received a copy of the license with this software. If
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you didn't get a copy, you may request one from <license@inner.net>.
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History:
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Modified by cmetz for OPIE 2.32. Added syslog.h if DEBUG.
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Modified by cmetz for OPIE 2.31. Added time.h.
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Created by cmetz for OPIE 2.22.
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$FreeBSD$
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*/
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#include "opie_cfg.h"
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#if HAVE_TIME_H
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#include <time.h>
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#endif /* HAVE_TIME_H */
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#if HAVE_STRING_H
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#include <string.h>
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#endif /* HAVE_STRING_H */
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#include <ctype.h>
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#if HAVE_UNISTD_H
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#include <unistd.h>
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#endif /* HAVE_UNISTD_H */
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#if HAVE_SYS_UTSNAME_H
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#include <sys/utsname.h>
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#endif /* HAVE_SYS_UTSNAME_H */
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#include <errno.h>
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#if DEBUG
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#include <syslog.h>
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#endif /* DEBUG */
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#include "opie.h"
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int opienewseed FUNCTION((seed), char *seed)
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{
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if (!seed)
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return -1;
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if (seed[0]) {
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int i;
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if ((i = strlen(seed)) >= OPIE_SEED_MIN) {
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long j;
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char *c;
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if (i > OPIE_SEED_MAX)
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i = OPIE_SEED_MAX;
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c = seed + i - 1;
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while(c != seed) {
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if (!isdigit(*c))
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break;
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c--;
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}
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c++;
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if (j = strtol(c, (char **)0, 10)) {
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char buf[OPIE_SEED_MAX];
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*c = 0;
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strcpy(buf, seed);
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if (errno == ERANGE) {
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j = 1;
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} else {
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int k = 1, l = OPIE_SEED_MAX - strlen(buf);
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while(l--) k *= 10;
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if (++j >= k)
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j = 1;
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}
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sprintf(seed, "%s%04ld", buf, j);
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return 0;
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}
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}
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}
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{
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{
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time_t now;
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time(&now);
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srand(now);
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}
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{
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struct utsname utsname;
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if (uname(&utsname) < 0) {
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#if DEBUG
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syslog(LOG_DEBUG, "uname: %s(%d)", strerror(errno), errno);
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#endif /* DEBUG */
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utsname.nodename[0] = 'k';
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utsname.nodename[1] = 'e';
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}
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utsname.nodename[2] = 0;
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sprintf(seed, "%s%04d", utsname.nodename, (rand() % 9999) + 1);
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return 0;
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}
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}
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}
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