* Original code by Paul Vixie. "curlified" by Gisle Vanem.
*/
-#include "setup.h"
+#include "curl_setup.h"
#ifndef HAVE_INET_NTOP
#ifdef HAVE_SYS_PARAM_H
#include <sys/param.h>
#endif
-#ifdef HAVE_SYS_TYPES_H
-#include <sys/types.h>
-#endif
-#ifdef HAVE_SYS_SOCKET_H
-#include <sys/socket.h>
-#endif
#ifdef HAVE_NETINET_IN_H
#include <netinet/in.h>
#endif
#ifdef HAVE_ARPA_INET_H
#include <arpa/inet.h>
#endif
-#include <string.h>
-#include <errno.h>
#define _MPRINTF_REPLACE /* use our functions only */
#include <curl/mprintf.h>
#include "inet_ntop.h"
-#if defined(HAVE_INET_NTOA_R) && !defined(HAVE_INET_NTOA_R_DECL)
-/* this platform has a inet_ntoa_r() function, but no proto declared anywhere
- so we include our own proto to make compilers happy */
-#include "inet_ntoa_r.h"
-#endif
-
#define IN6ADDRSZ 16
#define INADDRSZ 4
#define INT16SZ 2
-#ifdef WIN32
-#define EAFNOSUPPORT WSAEAFNOSUPPORT
-#define SET_ERRNO(e) WSASetLastError(errno = (e))
-#else
-#define SET_ERRNO(e) errno = e
-#endif
-
/*
* Format an IPv4 address, more or less like inet_ntoa().
*
*/
static char *inet_ntop4 (const unsigned char *src, char *dst, size_t size)
{
-#if defined(HAVE_INET_NTOA_R_2_ARGS)
- const char *ptr;
- curlassert(size >= 16);
- ptr = inet_ntoa_r(*(struct in_addr*)src, dst);
- return (char *)memmove(dst, ptr, strlen(ptr)+1);
+ char tmp[sizeof "255.255.255.255"];
+ size_t len;
-#elif defined(HAVE_INET_NTOA_R)
- return inet_ntoa_r(*(struct in_addr*)src, dst, size);
+ DEBUGASSERT(size >= 16);
-#else
- const char *addr = inet_ntoa(*(struct in_addr*)src);
+ tmp[0] = '\0';
+ (void)snprintf(tmp, sizeof(tmp), "%d.%d.%d.%d",
+ ((int)((unsigned char)src[0])) & 0xff,
+ ((int)((unsigned char)src[1])) & 0xff,
+ ((int)((unsigned char)src[2])) & 0xff,
+ ((int)((unsigned char)src[3])) & 0xff);
- if (strlen(addr) >= size)
- {
+ len = strlen(tmp);
+ if(len == 0 || len >= size) {
SET_ERRNO(ENOSPC);
return (NULL);
}
- return strcpy(dst, addr);
-#endif
+ strcpy(dst, tmp);
+ return dst;
}
#ifdef ENABLE_IPV6
* Copy the input (bytewise) array into a wordwise array.
* Find the longest run of 0x00's in src[] for :: shorthanding.
*/
- memset(words, 0, sizeof(words));
- for (i = 0; i < IN6ADDRSZ; i++)
- words[i/2] |= (src[i] << ((1 - (i % 2)) << 3));
+ memset(words, '\0', sizeof(words));
+ for(i = 0; i < IN6ADDRSZ; i++)
+ words[i/2] |= (src[i] << ((1 - (i % 2)) << 3));
best.base = -1;
cur.base = -1;
best.len = 0;
cur.len = 0;
- for (i = 0; i < (IN6ADDRSZ / INT16SZ); i++)
- {
- if (words[i] == 0)
- {
- if (cur.base == -1)
+ for(i = 0; i < (IN6ADDRSZ / INT16SZ); i++) {
+ if(words[i] == 0) {
+ if(cur.base == -1)
cur.base = i, cur.len = 1;
else
cur.len++;
}
- else if (cur.base != -1)
- {
- if (best.base == -1 || cur.len > best.len)
- best = cur;
+ else if(cur.base != -1) {
+ if(best.base == -1 || cur.len > best.len)
+ best = cur;
cur.base = -1;
}
}
- if ((cur.base != -1) && (best.base == -1 || cur.len > best.len))
- best = cur;
- if (best.base != -1 && best.len < 2)
- best.base = -1;
-
- /* Format the result.
- */
+ if((cur.base != -1) && (best.base == -1 || cur.len > best.len))
+ best = cur;
+ if(best.base != -1 && best.len < 2)
+ best.base = -1;
+ /* Format the result. */
tp = tmp;
- for (i = 0; i < (IN6ADDRSZ / INT16SZ); i++)
- {
- /* Are we inside the best run of 0x00's?
- */
- if (best.base != -1 && i >= best.base && i < (best.base + best.len))
- {
- if (i == best.base)
- *tp++ = ':';
+ for(i = 0; i < (IN6ADDRSZ / INT16SZ); i++) {
+ /* Are we inside the best run of 0x00's? */
+ if(best.base != -1 && i >= best.base && i < (best.base + best.len)) {
+ if(i == best.base)
+ *tp++ = ':';
continue;
}
/* Are we following an initial run of 0x00s or any real hex?
*/
- if (i != 0)
- *tp++ = ':';
+ if(i != 0)
+ *tp++ = ':';
/* Is this address an encapsulated IPv4?
*/
- if (i == 6 && best.base == 0 &&
- (best.len == 6 || (best.len == 5 && words[5] == 0xffff)))
- {
- if (!inet_ntop4(src+12, tp, sizeof(tmp) - (tp - tmp)))
- {
+ if(i == 6 && best.base == 0 &&
+ (best.len == 6 || (best.len == 5 && words[5] == 0xffff))) {
+ if(!inet_ntop4(src+12, tp, sizeof(tmp) - (tp - tmp))) {
SET_ERRNO(ENOSPC);
return (NULL);
}
/* Was it a trailing run of 0x00's?
*/
- if (best.base != -1 && (best.base + best.len) == (IN6ADDRSZ / INT16SZ))
+ if(best.base != -1 && (best.base + best.len) == (IN6ADDRSZ / INT16SZ))
*tp++ = ':';
*tp++ = '\0';
/* Check for overflow, copy, and we're done.
*/
- if ((size_t)(tp - tmp) > size)
- {
+ if((size_t)(tp - tmp) > size) {
SET_ERRNO(ENOSPC);
return (NULL);
}
- return strcpy (dst, tmp);
+ strcpy(dst, tmp);
+ return dst;
}
#endif /* ENABLE_IPV6 */
/*
* Convert a network format address to presentation format.
*
- * Returns pointer to presentation format address (`buf'),
- * Returns NULL on error (see errno).
+ * Returns pointer to presentation format address (`buf').
+ * Returns NULL on error and errno set with the specific
+ * error, EAFNOSUPPORT or ENOSPC.
+ *
+ * On Windows we store the error in the thread errno, not
+ * in the winsock error code. This is to avoid losing the
+ * actual last winsock error. So use macro ERRNO to fetch the
+ * errno this function sets when returning NULL, not SOCKERRNO.
*/
char *Curl_inet_ntop(int af, const void *src, char *buf, size_t size)
{
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