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yap-6.3/packages/clib/maildrop/rfc2045/rfc2045mkboundary.c
2010-08-04 22:09:08 +01:00

83 lines
1.4 KiB
C

/*
** Copyright 1998 - 1999 Double Precision, Inc. See COPYING for
** distribution information.
*/
#if HAVE_CONFIG_H
#include "config.h"
#endif
#include "rfc2045.h"
#if HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#ifdef __WINDOWS__
#define NUMBUFSIZE 60
#define HAS_GETHOSTNAME 1
#include <windows.h>
#else
#define NUMBUFSIZE 60
#endif
/* $Id$ */
#if HAS_GETHOSTNAME||HAVE_GETHOSTNAME
#else
extern int gethostname(char *, size_t);
#endif
extern void rfc2045_enomem();
char *rfc2045_mk_boundary(struct rfc2045 *s, int fd)
{
char pidbuf[NUMBUFSIZE];
char timebuf[NUMBUFSIZE];
char cntbuf[60];
int cnt=0;
time_t mytime;
#ifndef __WINDOWS__
char hostnamebuf[256];
pid_t mypid;
#endif
char *p;
int rc;
time(&mytime);
#ifdef __WINDOWS__
sprintf(pidbuf, "%ld", GetCurrentThreadId());
sprintf(timebuf, "%ld", (long)mytime);
#else
hostnamebuf[sizeof(hostnamebuf)-1]=0;
if (gethostname(hostnamebuf, sizeof(hostnamebuf)-1))
hostnamebuf[0]=0;
mypid=getpid();
sprintf(pidbuf, "%d", mypid);
sprintf(timebuf, "%ld", mytime);
#endif
for (;;)
{
sprintf(cntbuf, "%d", ++cnt);
p=malloc(strlen(pidbuf)+strlen(timebuf)+
strlen(cntbuf)+10);
if (!p)
{
rfc2045_enomem();
return (NULL);
}
sprintf(p, "=_%s-%s-%s", pidbuf, timebuf, cntbuf);
if ((rc=rfc2045_try_boundary(s, fd, p)) == 0)
break;
free(p);
if (rc < 0)
return (NULL);
}
return (p);
}