1 files changed, 137 insertions, 0 deletions
diff --git a/trunk/main/minimime/mm_mimeutil.c b/trunk/main/minimime/mm_mimeutil.c
new file mode 100644
index 000000000..4a5cc35e9
--- /dev/null
+++ b/trunk/main/minimime/mm_mimeutil.c
@@ -0,0 +1,137 @@
+/*
+ * $Id$
+ *
+ * MiniMIME - a library for handling MIME messages
+ *
+ * Copyright (C) 2004 Jann Fischer <rezine@mistrust.net>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the author nor the names of the contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY JANN FISCHER AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL JANN FISCHER OR THE VOICES IN HIS HEAD
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+ * THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#include <sys/time.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <assert.h>
+
+#include "mm_internal.h"
+
+#define MM_DATE_LENGTH 50
+
+static const char boundary_charset[] = 
+    "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789.=";
+
+/** @file mm_mimeutil.c
+ *
+ * This module contains various MIME related utility functions.
+ */
+
+/** @defgroup mimeutil MIME related utility functions */
+
+/**
+ * Generates an RFC 2822 conform date string
+ *
+ * @param timezone Whether to include timezone information
+ * @returns A pointer to the actual date string
+ * @note The pointer returned must be freed some time
+ *
+ * This function generates an RFC 2822 conform date string to use in message
+ * headers. It allocates memory to hold the string and returns a pointer to
+ * it. The generated date is in the format (example):
+ *
+ *	Thu, 25 December 2003 16:35:22 +0100 (CET)
+ *
+ * This function dynamically allocates memory and returns a pointer to it.
+ * This memory should be released with free() once not needed anymore.
+ */
+#if 0
+int
+mm_mimeutil_gendate(char **result)
+{
+	time_t curtime;
+	struct tm *curtm;
+	
+	if (result != NULL) {
+		curtime = time(NULL);
+		curtm = localtime(&curtime);
+		if ((*result = (char *) malloc(MM_DATE_LENGTH)) == NULL) {
+			return(-1);
+		}	
+		return(strftime(*result, MM_DATE_LENGTH, 
+		    "%a, %d %b %G %T %z (%Z)", curtm));
+	} else {
+		return(-1);
+	}	
+}
+#endif
+
+int
+mm_mimeutil_genboundary(char *prefix, size_t length, char **result)
+{
+	size_t total;
+	size_t preflen;
+	struct timeval curtm;
+	int i;
+	int pos;
+
+	total = 0;
+	preflen = 0;
+
+	if (result == NULL) {
+		return(-1);
+	}	
+	*result = NULL;
+
+	gettimeofday(&curtm, NULL);
+	srandom(curtm.tv_usec);
+	
+	if (prefix != NULL) {
+		total = strlen(prefix);
+		preflen = total;
+	}
+
+	total += length;
+
+	if ((*result = (char *) xmalloc(total + 1)) == NULL) {
+		mm_errno = MM_ERROR_ERRNO;
+		return(-1);
+	}	
+
+	*result = '\0';
+
+	if (prefix != NULL) {
+		strlcat(*result, prefix, total);
+	}
+
+	for (i = 0; i < length - 1; i++) {
+		pos = random() % strlen(boundary_charset);
+		*result[i + preflen] = boundary_charset[pos];
+	}
+	*result[total] = '\0';
+
+	return (0);
+}