Switching to GPL 3.

[rsync/rsync.git] / lib / compat.c

diff --git a/lib/compat.c b/lib/compat.c
index 1c185d9..b26a879 100644 (file)
--- a/lib/compat.c
+++ b/lib/compat.c
@@ -1,37 +1,33 @@
-/* 
-   Copyright (C) Andrew Tridgell 1998
-   
-   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.
-*/
-
 /*
-  compatibility functions - replacing functions for platforms that don't
-  have them.
+ * Reimplementations of standard functions for platforms that don't have them.
+ *
+ * Copyright (C) 1998 Andrew Tridgell
+ * Copyright (C) 2002 Martin Pool
+ * Copyright (C) 2004, 2005, 2006 Wayne Davison
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 3 as
+ * published by the Free Software Foundation.
+ *
+ * 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, visit the http://fsf.org website.
+ */
 
-  */
 #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;
+       int len = strlen(s) + 1;
+       char *ret = (char *)malloc(len);
+       if (ret)
+               memcpy(ret, s, len);
+       return ret;
 }
 #endif
 
@@ -78,9 +74,11 @@
 #endif
 
 #ifndef HAVE_STRPBRK
-/* Find the first ocurrence in S of any character in ACCEPT.  
-   derived from glibc 
-*/
+/**
+ * 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')  {
@@ -97,33 +95,45 @@
 
 
 #ifndef HAVE_STRLCPY
-/* like strncpy but does not 0 fill the buffer and always null 
-   terminates. bufsize is the size of the destination buffer */
+/**
+ * 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 (len >= bufsize) len = bufsize-1;
-       memcpy(d, s, len);
-       d[len] = 0;
+       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. bufsize is the length of the buffer, which should
-   be one more than the maximum resulting string length */
+/**
+ * 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+len2 >= bufsize) {
-               len2 = bufsize - (len1+1);
-       }
-       if (len2 > 0) {
+       if (len1 < bufsize - 1) {
+               if (len2 >= bufsize - len1)
+                       len2 = bufsize - len1 - 1;
                memcpy(d+len1, s, len2);
                d[len1+len2] = 0;
        }
@@ -131,53 +141,10 @@
 }
 #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
-       slprintf(buf, 18, "%d.%d.%d.%d", 
-                (int)p[0], (int)p[1], (int)p[2], (int)p[3]);
-#else
-       slprintf(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 1;
-       }
-
-       if (sscanf(cp, "%u.%u.%u.%u", &a1, &a2, &a3, &a4) != 4 ||
-           a1 > 255 || a2 > 255 || a3 > 255 || a4 > 255) {
-               return 1;
-       }
-
-       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
+#ifdef HAVE_GETTIMEOFDAY_TZ
        return gettimeofday(tv, NULL);
 #else
        return gettimeofday(tv);