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cmdline: standardize conversion of IP address strings

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

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

There is a small functional impact: IP addresses like 012.34.56.78
are not valid anymore.

Signed-off-by: Olivier Matz <olivier.matz@6wind.com>
This commit is contained in:
Olivier Matz 2018-01-29 11:29:03 +01:00 committed by Thomas Monjalon
parent b3a022b17c
commit b94fcf6bdf
2 changed files with 3 additions and 220 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

221
lib/librte_cmdline/cmdline_parse_ipaddr.c
View File

@ -4,26 +4,6 @@
* All rights reserved.
*/
/*
* 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>
@ -31,6 +11,7 @@
#include <ctype.h>
#include <string.h>
#include <errno.h>
#include <arpa/inet.h>
#include <netinet/in.h>
#ifndef __linux__
#ifndef __FreeBSD__
@ -52,205 +33,9 @@ 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)
@ -299,7 +84,7 @@ 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)
@ -307,7 +92,7 @@ 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));

2
test/test/test_cmdline_ipaddr.c
View File

@ -87,8 +87,6 @@ const struct ipaddr_str ipaddr_valid_strs[] = {
CMDLINE_IPADDR_V4 | CMDLINE_IPADDR_NETWORK},
{"192.168.1.0/24", {AF_INET, {IP4(192,168,1,0)}, 24},
CMDLINE_IPADDR_V4 | CMDLINE_IPADDR_NETWORK},
{"012.34.56.78/24", {AF_INET, {IP4(12,34,56,78)}, 24},
CMDLINE_IPADDR_V4 | CMDLINE_IPADDR_NETWORK},
{"34.56.78.90/1", {AF_INET, {IP4(34,56,78,90)}, 1},
CMDLINE_IPADDR_V4 | CMDLINE_IPADDR_NETWORK},
{"::", {AF_INET6, {IP6(0,0,0,0,0,0,0,0)}, 0},