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/* $OpenBSD: util.c,v 1.8 2009/01/27 15:57:01 gilles Exp $ */
/*
* Copyright (c) 2008 Gilles Chehade <gilles@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/types.h>
#include <sys/param.h>
#include <sys/queue.h>
#include <sys/tree.h>
#include <sys/socket.h>
#include <ctype.h>
#include <errno.h>
#include <event.h>
#include <pwd.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include "smtpd.h"
int
bsnprintf(char *str, size_t size, const char *format, ...)
{
int ret;
va_list ap;
va_start(ap, format);
ret = vsnprintf(str, size, format, ap);
va_end(ap);
if (ret == -1 || ret >= (int)size)
return 0;
return 1;
}
/* Close file, signifying temporary error condition (if any) to the caller. */
int
safe_fclose(FILE *fp)
{
if (fflush(fp)) {
if (errno == ENOSPC)
return 0;
fatal("safe_fclose: fflush");
}
if (fsync(fileno(fp)))
fatal("safe_fclose: fsync");
if (fclose(fp))
fatal("safe_fclose: fclose");
return 1;
}
struct passwd *
safe_getpwnam(const char *name)
{
struct passwd *ret;
ret = getpwnam(name);
endpwent();
return ret;
}
struct passwd *
safe_getpwuid(uid_t uid)
{
struct passwd *ret;
ret = getpwuid(uid);
endpwent();
return ret;
}
int
hostname_match(char *hostname, char *pattern)
{
while (*pattern != '\0' && *hostname != '\0') {
if (*pattern == '*') {
while (*pattern == '*')
pattern++;
while (*hostname != '\0' &&
tolower(*hostname) != tolower(*pattern))
hostname++;
continue;
}
if (tolower(*pattern) != tolower(*hostname))
return 0;
pattern++;
hostname++;
}
return (*hostname == '\0' && *pattern == '\0');
}
int
recipient_to_path(struct path *path, char *recipient)
{
size_t len;
char *username;
char *hostname;
username = recipient;
hostname = strchr(username, '@');
if (username[0] == '\0') {
*path->user = '\0';
*path->domain = '\0';
return 1;
}
if (hostname == NULL) {
if (strcasecmp(username, "postmaster") != 0)
return 0;
hostname = "localhost";
} else {
*hostname++ = '\0';
}
if (strlcpy(path->user, username, sizeof(path->user))
>= MAX_LOCALPART_SIZE)
return 0;
if (strlcpy(path->domain, hostname, sizeof(path->domain))
>= MAX_DOMAINPART_SIZE)
return 0;
return 1;
}
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