4 * Copyright(c) 2010-2012 Intel Corporation. All rights reserved.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
11 * * Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
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29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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36 * Copyright (c) 2009, Olivier MATZ <zer0@droids-corp.org>
37 * All rights reserved.
38 * Redistribution and use in source and binary forms, with or without
39 * modification, are permitted provided that the following conditions are met:
41 * * Redistributions of source code must retain the above copyright
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47 * names of its contributors may be used to endorse or promote products
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57 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
58 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
59 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
63 * For inet_ntop() functions:
65 * Copyright (c) 1996 by Internet Software Consortium.
67 * Permission to use, copy, modify, and distribute this software for any
68 * purpose with or without fee is hereby granted, provided that the above
69 * copyright notice and this permission notice appear in all copies.
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72 * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
73 * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
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75 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
76 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
77 * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
89 #include <netinet/in.h>
91 #include <net/socket.h>
94 #include <rte_string_fns.h>
96 #include "cmdline_parse.h"
97 #include "cmdline_parse_ipaddr.h"
99 struct cmdline_token_ops cmdline_token_ipaddr_ops = {
100 .parse = cmdline_parse_ipaddr,
101 .complete_get_nb = NULL,
102 .complete_get_elt = NULL,
103 .get_help = cmdline_get_help_ipaddr,
108 #define PREFIXMAX 128
109 #define V4PREFIXMAX 32
112 * WARNING: Don't even consider trying to compile this on a system where
113 * sizeof(int) < 4. sizeof(int) > 4 is fine; all the world's not a VAX.
116 static int inet_pton4(const char *src, unsigned char *dst);
117 static int inet_pton6(const char *src, unsigned char *dst);
120 * inet_pton(af, src, dst)
121 * convert from presentation format (which usually means ASCII printable)
122 * to network format (which is usually some kind of binary format).
124 * 1 if the address was valid for the specified address family
125 * 0 if the address wasn't valid (`dst' is untouched in this case)
126 * -1 if some other error occurred (`dst' is untouched in this case, too)
131 my_inet_pton(int af, const char *src, void *dst)
135 return (inet_pton4(src, dst));
137 return (inet_pton6(src, dst));
139 errno = EAFNOSUPPORT;
146 * inet_pton4(src, dst)
147 * like inet_aton() but without all the hexadecimal and shorthand.
149 * 1 if `src' is a valid dotted quad, else 0.
151 * does not touch `dst' unless it's returning 1.
156 inet_pton4(const char *src, unsigned char *dst)
158 static const char digits[] = "0123456789";
159 int saw_digit, octets, ch;
160 unsigned char tmp[INADDRSZ], *tp;
165 while ((ch = *src++) != '\0') {
168 if ((pch = strchr(digits, ch)) != NULL) {
169 unsigned int new = *tp * 10 + (pch - digits);
178 *tp = (unsigned char)new;
179 } else if (ch == '.' && saw_digit) {
190 memcpy(dst, tmp, INADDRSZ);
195 * inet_pton6(src, dst)
196 * convert presentation level address to network order binary form.
198 * 1 if `src' is a valid [RFC1884 2.2] address, else 0.
200 * (1) does not touch `dst' unless it's returning 1.
201 * (2) :: in a full address is silently ignored.
203 * inspired by Mark Andrews.
208 inet_pton6(const char *src, unsigned char *dst)
210 static const char xdigits_l[] = "0123456789abcdef",
211 xdigits_u[] = "0123456789ABCDEF";
212 unsigned char tmp[IN6ADDRSZ], *tp = 0, *endp = 0, *colonp = 0;
213 const char *xdigits = 0, *curtok = 0;
214 int ch = 0, saw_xdigit = 0, count_xdigit = 0;
215 unsigned int val = 0;
216 unsigned dbloct_count = 0;
218 memset((tp = tmp), '\0', IN6ADDRSZ);
219 endp = tp + IN6ADDRSZ;
221 /* Leading :: requires some special handling. */
226 saw_xdigit = count_xdigit = 0;
229 while ((ch = *src++) != '\0') {
232 if ((pch = strchr((xdigits = xdigits_l), ch)) == NULL)
233 pch = strchr((xdigits = xdigits_u), ch);
235 if (count_xdigit >= 4)
238 val |= (pch - xdigits);
252 } else if (*src == '\0') {
255 if (tp + sizeof(int16_t) > endp)
257 *tp++ = (unsigned char) ((val >> 8) & 0xff);
258 *tp++ = (unsigned char) (val & 0xff);
265 if (ch == '.' && ((tp + INADDRSZ) <= endp) &&
266 inet_pton4(curtok, tp) > 0) {
271 break; /* '\0' was seen by inet_pton4(). */
276 if (tp + sizeof(int16_t) > endp)
278 *tp++ = (unsigned char) ((val >> 8) & 0xff);
279 *tp++ = (unsigned char) (val & 0xff);
282 if (colonp != NULL) {
283 /* if we already have 8 double octets, having a colon means error */
284 if (dbloct_count == 8)
288 * Since some memmove()'s erroneously fail to handle
289 * overlapping regions, we'll do the shift by hand.
291 const int n = tp - colonp;
294 for (i = 1; i <= n; i++) {
295 endp[- i] = colonp[n - i];
302 memcpy(dst, tmp, IN6ADDRSZ);
307 cmdline_parse_ipaddr(cmdline_parse_token_hdr_t *tk, const char *buf, void *res)
309 struct cmdline_token_ipaddr *tk2;
310 unsigned int token_len = 0;
311 char ip_str[INET6_ADDRSTRLEN+4+1]; /* '+4' is for prefixlen (if any) */
312 cmdline_ipaddr_t ipaddr;
313 char *prefix, *prefix_end;
316 if (!buf || !tk || ! *buf)
319 tk2 = (struct cmdline_token_ipaddr *)tk;
321 while (!cmdline_isendoftoken(buf[token_len]))
324 /* if token is too big... */
325 if (token_len >= INET6_ADDRSTRLEN+4)
328 rte_snprintf(ip_str, token_len+1, "%s", buf);
330 /* convert the network prefix */
331 if (tk2->ipaddr_data.flags & CMDLINE_IPADDR_NETWORK) {
332 prefix = strrchr(ip_str, '/');
338 prefixlen = strtol(prefix, &prefix_end, 10);
339 if (errno || (*prefix_end != '\0')
340 || prefixlen < 0 || prefixlen > PREFIXMAX)
342 ipaddr.prefixlen = prefixlen;
345 ipaddr.prefixlen = 0;
348 /* convert the IP addr */
349 if ((tk2->ipaddr_data.flags & CMDLINE_IPADDR_V4) &&
350 my_inet_pton(AF_INET, ip_str, &ipaddr.addr.ipv4) == 1 &&
351 prefixlen <= V4PREFIXMAX) {
352 ipaddr.family = AF_INET;
354 memcpy(res, &ipaddr, sizeof(ipaddr));
357 if ((tk2->ipaddr_data.flags & CMDLINE_IPADDR_V6) &&
358 my_inet_pton(AF_INET6, ip_str, &ipaddr.addr.ipv6) == 1) {
359 ipaddr.family = AF_INET6;
361 memcpy(res, &ipaddr, sizeof(ipaddr));
368 int cmdline_get_help_ipaddr(cmdline_parse_token_hdr_t *tk, char *dstbuf,
371 struct cmdline_token_ipaddr *tk2;
376 tk2 = (struct cmdline_token_ipaddr *)tk;
378 switch (tk2->ipaddr_data.flags) {
379 case CMDLINE_IPADDR_V4:
380 rte_snprintf(dstbuf, size, "IPv4");
382 case CMDLINE_IPADDR_V6:
383 rte_snprintf(dstbuf, size, "IPv6");
385 case CMDLINE_IPADDR_V4|CMDLINE_IPADDR_V6:
386 rte_snprintf(dstbuf, size, "IPv4/IPv6");
388 case CMDLINE_IPADDR_NETWORK|CMDLINE_IPADDR_V4:
389 rte_snprintf(dstbuf, size, "IPv4 network");
391 case CMDLINE_IPADDR_NETWORK|CMDLINE_IPADDR_V6:
392 rte_snprintf(dstbuf, size, "IPv6 network");
394 case CMDLINE_IPADDR_NETWORK|CMDLINE_IPADDR_V4|CMDLINE_IPADDR_V6:
395 rte_snprintf(dstbuf, size, "IPv4/IPv6 network");
398 rte_snprintf(dstbuf, size, "IPaddr (bad flags)");