clib package

packages/clib/maildrop/rfc2045/rfc2045mkboundary.c

@@ -0,0 +1,82 @@
+/*
+** 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
+
+#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);
+}