cmdline: standardize conversion of IP address strings

The code to convert IPv4 and IPv6 address strings into a binary format
(inet_ntop) was included in the cmdline library. This was needed when
the DPDK was compiled in environments where the standard inet_ntop()
function is not available. Today, this is not the case and the standard
inet_ntop() is always available.

This patch removes the internal inet_ntop() functions and the specific
license.

Signed-off-by: Olivier Matz <olivier.matz@6wind.com>

diff --git a/lib/librte_cmdline/cmdline_parse_ipaddr.c b/lib/librte_cmdline/cmdline_parse_ipaddr.c
index d3d3e04..e54ec46 100644 (file)
--- a/lib/librte_cmdline/cmdline_parse_ipaddr.c
+++ b/lib/librte_cmdline/cmdline_parse_ipaddr.c
@@ -58,26 +58,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-/*
- * For inet_ntop() functions:
- *
- * Copyright (c) 1996 by Internet Software Consortium.
- *
- * 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 INTERNET SOFTWARE CONSORTIUM DISCLAIMS
- * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
- * CONSORTIUM 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 <stdio.h>
 #include <stdlib.h>
 #include <stdarg.h>
@@ -85,6 +65,7 @@
 #include <ctype.h>
 #include <string.h>
 #include <errno.h>
+#include <arpa/inet.h>
 #include <netinet/in.h>
 #ifndef __linux__
 #ifndef __FreeBSD__
@@ -106,205 +87,9 @@ struct cmdline_token_ops cmdline_token_ipaddr_ops = {
        .get_help = cmdline_get_help_ipaddr,
 };
 
-#define INADDRSZ 4
-#define IN6ADDRSZ 16
 #define PREFIXMAX 128
 #define V4PREFIXMAX 32
 
-/*
- * WARNING: Don't even consider trying to compile this on a system where
- * sizeof(int) < 4.  sizeof(int) > 4 is fine; all the world's not a VAX.
- */
-
-static int inet_pton4(const char *src, unsigned char *dst);
-static int inet_pton6(const char *src, unsigned char *dst);
-
-/* int
- * inet_pton(af, src, dst)
- *      convert from presentation format (which usually means ASCII printable)
- *      to network format (which is usually some kind of binary format).
- * return:
- *      1 if the address was valid for the specified address family
- *      0 if the address wasn't valid (`dst' is untouched in this case)
- *      -1 if some other error occurred (`dst' is untouched in this case, too)
- * author:
- *      Paul Vixie, 1996.
- */
-static int
-my_inet_pton(int af, const char *src, void *dst)
-{
-       switch (af) {
-               case AF_INET:
-                       return inet_pton4(src, dst);
-               case AF_INET6:
-                       return inet_pton6(src, dst);
-               default:
-                       errno = EAFNOSUPPORT;
-                       return -1;
-       }
-       /* NOTREACHED */
-}
-
-/* int
- * inet_pton4(src, dst)
- *      like inet_aton() but without all the hexadecimal and shorthand.
- * return:
- *      1 if `src' is a valid dotted quad, else 0.
- * notice:
- *      does not touch `dst' unless it's returning 1.
- * author:
- *      Paul Vixie, 1996.
- */
-static int
-inet_pton4(const char *src, unsigned char *dst)
-{
-       static const char digits[] = "0123456789";
-       int saw_digit, octets, ch;
-       unsigned char tmp[INADDRSZ], *tp;
-
-       saw_digit = 0;
-       octets = 0;
-       *(tp = tmp) = 0;
-       while ((ch = *src++) != '\0') {
-               const char *pch;
-
-               if ((pch = strchr(digits, ch)) != NULL) {
-                       unsigned int new = *tp * 10 + (pch - digits);
-
-                       if (new > 255)
-                               return 0;
-                       if (! saw_digit) {
-                               if (++octets > 4)
-                                       return 0;
-                               saw_digit = 1;
-                       }
-                       *tp = (unsigned char)new;
-               } else if (ch == '.' && saw_digit) {
-                       if (octets == 4)
-                               return 0;
-                       *++tp = 0;
-                       saw_digit = 0;
-               } else
-                       return 0;
-       }
-       if (octets < 4)
-               return 0;
-
-       memcpy(dst, tmp, INADDRSZ);
-       return 1;
-}
-
-/* int
- * inet_pton6(src, dst)
- *      convert presentation level address to network order binary form.
- * return:
- *      1 if `src' is a valid [RFC1884 2.2] address, else 0.
- * notice:
- *      (1) does not touch `dst' unless it's returning 1.
- *      (2) :: in a full address is silently ignored.
- * credit:
- *      inspired by Mark Andrews.
- * author:
- *      Paul Vixie, 1996.
- */
-static int
-inet_pton6(const char *src, unsigned char *dst)
-{
-       static const char xdigits_l[] = "0123456789abcdef",
-               xdigits_u[] = "0123456789ABCDEF";
-       unsigned char tmp[IN6ADDRSZ], *tp = 0, *endp = 0, *colonp = 0;
-       const char *xdigits = 0, *curtok = 0;
-       int ch = 0, saw_xdigit = 0, count_xdigit = 0;
-       unsigned int val = 0;
-       unsigned dbloct_count = 0;
-
-       memset((tp = tmp), '\0', IN6ADDRSZ);
-       endp = tp + IN6ADDRSZ;
-       colonp = NULL;
-       /* Leading :: requires some special handling. */
-       if (*src == ':')
-               if (*++src != ':')
-                       return 0;
-       curtok = src;
-       saw_xdigit = count_xdigit = 0;
-       val = 0;
-
-       while ((ch = *src++) != '\0') {
-               const char *pch;
-
-               if ((pch = strchr((xdigits = xdigits_l), ch)) == NULL)
-                       pch = strchr((xdigits = xdigits_u), ch);
-               if (pch != NULL) {
-                       if (count_xdigit >= 4)
-                               return 0;
-                       val <<= 4;
-                       val |= (pch - xdigits);
-                       if (val > 0xffff)
-                               return 0;
-                       saw_xdigit = 1;
-                       count_xdigit++;
-                       continue;
-               }
-               if (ch == ':') {
-                       curtok = src;
-                       if (!saw_xdigit) {
-                               if (colonp)
-                                       return 0;
-                               colonp = tp;
-                               continue;
-                       } else if (*src == '\0') {
-                               return 0;
-                       }
-                       if (tp + sizeof(int16_t) > endp)
-                               return 0;
-                       *tp++ = (unsigned char) ((val >> 8) & 0xff);
-                       *tp++ = (unsigned char) (val & 0xff);
-                       saw_xdigit = 0;
-                       count_xdigit = 0;
-                       val = 0;
-                       dbloct_count++;
-                       continue;
-               }
-               if (ch == '.' && ((tp + INADDRSZ) <= endp) &&
-                   inet_pton4(curtok, tp) > 0) {
-                       tp += INADDRSZ;
-                       saw_xdigit = 0;
-                       dbloct_count += 2;
-                       break;  /* '\0' was seen by inet_pton4(). */
-               }
-               return 0;
-       }
-       if (saw_xdigit) {
-               if (tp + sizeof(int16_t) > endp)
-                       return 0;
-               *tp++ = (unsigned char) ((val >> 8) & 0xff);
-               *tp++ = (unsigned char) (val & 0xff);
-               dbloct_count++;
-       }
-       if (colonp != NULL) {
-               /* if we already have 8 double octets, having a colon means error */
-               if (dbloct_count == 8)
-                       return 0;
-
-               /*
-                * Since some memmove()'s erroneously fail to handle
-                * overlapping regions, we'll do the shift by hand.
-                */
-               const int n = tp - colonp;
-               int i;
-
-               for (i = 1; i <= n; i++) {
-                       endp[- i] = colonp[n - i];
-                       colonp[n - i] = 0;
-               }
-               tp = endp;
-       }
-       if (tp != endp)
-               return 0;
-       memcpy(dst, tmp, IN6ADDRSZ);
-       return 1;
-}
-
 int
 cmdline_parse_ipaddr(cmdline_parse_token_hdr_t *tk, const char *buf, void *res,
        unsigned ressize)
@@ -353,7 +138,7 @@ cmdline_parse_ipaddr(cmdline_parse_token_hdr_t *tk, const char *buf, void *res,
 
        /* convert the IP addr */
        if ((tk2->ipaddr_data.flags & CMDLINE_IPADDR_V4) &&
-           my_inet_pton(AF_INET, ip_str, &ipaddr.addr.ipv4) == 1 &&
+           inet_pton(AF_INET, ip_str, &ipaddr.addr.ipv4) == 1 &&
                prefixlen <= V4PREFIXMAX) {
                ipaddr.family = AF_INET;
                if (res)
@@ -361,7 +146,7 @@ cmdline_parse_ipaddr(cmdline_parse_token_hdr_t *tk, const char *buf, void *res,
                return token_len;
        }
        if ((tk2->ipaddr_data.flags & CMDLINE_IPADDR_V6) &&
-           my_inet_pton(AF_INET6, ip_str, &ipaddr.addr.ipv6) == 1) {
+           inet_pton(AF_INET6, ip_str, &ipaddr.addr.ipv6) == 1) {
                ipaddr.family = AF_INET6;
                if (res)
                        memcpy(res, &ipaddr, sizeof(ipaddr));