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/*
Copyright (C) Andrew Tridgell 1998
Copyright (C) 2002 by Martin Pool
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/**
* @file compat.c
*
* Reimplementations of standard functions for platforms that don't
* have them.
**/
#include "rsync.h"
#ifndef HAVE_STRDUP
char *strdup(char *s)
{
int l = strlen(s) + 1;
char *ret = (char *)malloc(l);
if (ret)
strcpy(ret,s);
return ret;
}
#endif
#ifndef HAVE_GETCWD
char *getcwd(char *buf, int size)
{
return getwd(buf);
}
#endif
#ifndef HAVE_WAITPID
pid_t waitpid(pid_t pid, int *statptr, int options)
{
#ifdef HAVE_WAIT4
return wait4(pid, statptr, options, NULL);
#else
/* If wait4 is also not available, try wait3 for SVR3 variants */
/* Less ideal because can't actually request a specific pid */
/* At least the WNOHANG option is supported */
/* Code borrowed from apache fragment written by dwd@bell-labs.com */
int tmp_pid, dummystat;;
if (kill(pid, 0) == -1) {
errno = ECHILD;
return -1;
}
if (statptr == NULL)
statptr = &dummystat;
while (((tmp_pid = wait3(statptr, options, 0)) != pid) &&
(tmp_pid != -1) && (tmp_pid != 0) && (pid != -1))
;
return tmp_pid;
#endif
}
#endif
#ifndef HAVE_MEMMOVE
void *memmove(void *dest, const void *src, size_t n)
{
bcopy((char *) src, (char *) dest, n);
return dest;
}
#endif
#ifndef HAVE_STRPBRK
/**
* Find the first ocurrence in @p s of any character in @p accept.
*
* Derived from glibc
**/
char *strpbrk(const char *s, const char *accept)
{
while (*s != '\0') {
const char *a = accept;
while (*a != '\0') {
if (*a++ == *s) return (char *)s;
}
++s;
}
return NULL;
}
#endif
#ifndef HAVE_STRLCPY
/**
* Like strncpy but does not 0 fill the buffer and always null
* terminates.
*
* @param bufsize is the size of the destination buffer.
*
* @return index of the terminating byte.
**/
size_t strlcpy(char *d, const char *s, size_t bufsize)
{
size_t len = strlen(s);
size_t ret = len;
if (bufsize > 0) {
if (len >= bufsize)
len = bufsize-1;
memcpy(d, s, len);
d[len] = 0;
}
return ret;
}
#endif
#ifndef HAVE_STRLCAT
/**
* Like strncat() but does not 0 fill the buffer and always null
* terminates.
*
* @param bufsize length of the buffer, which should be one more than
* the maximum resulting string length.
**/
size_t strlcat(char *d, const char *s, size_t bufsize)
{
size_t len1 = strlen(d);
size_t len2 = strlen(s);
size_t ret = len1 + len2;
if (len1 < bufsize - 1) {
if (len2 >= bufsize - len1)
len2 = bufsize - len1 - 1;
memcpy(d+len1, s, len2);
d[len1+len2] = 0;
}
return ret;
}
#endif
#ifdef REPLACE_INET_NTOA
char *rep_inet_ntoa(struct in_addr ip)
{
unsigned char *p = (unsigned char *)&ip.s_addr;
static char buf[18];
#if WORDS_BIGENDIAN
snprintf(buf, 18, "%d.%d.%d.%d",
(int)p[0], (int)p[1], (int)p[2], (int)p[3]);
#else
snprintf(buf, 18, "%d.%d.%d.%d",
(int)p[3], (int)p[2], (int)p[1], (int)p[0]);
#endif
return buf;
}
#endif
#ifdef REPLACE_INET_ATON
int inet_aton(const char *cp, struct in_addr *inp)
{
unsigned int a1, a2, a3, a4;
unsigned long ret;
if (strcmp(cp, "255.255.255.255") == 0) {
inp->s_addr = (unsigned) -1;
return 0;
}
if (sscanf(cp, "%u.%u.%u.%u", &a1, &a2, &a3, &a4) != 4 ||
a1 > 255 || a2 > 255 || a3 > 255 || a4 > 255) {
return 0;
}
ret = (a1 << 24) | (a2 << 16) | (a3 << 8) | a4;
inp->s_addr = htonl(ret);
if (inp->s_addr == (unsigned) -1) {
return 0;
}
return 1;
}
#endif
/* some systems don't take the 2nd argument */
int sys_gettimeofday(struct timeval *tv)
{
#if HAVE_GETTIMEOFDAY_TZ
return gettimeofday(tv, NULL);
#else
return gettimeofday(tv);
#endif
}
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