You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
116 lines
3.2 KiB
116 lines
3.2 KiB
Revert this upstream commit: |
|
|
|
commit 9a0cc8c1bd7645bf3c988890ffb59639c07a5812 |
|
Author: Florian Weimer <fweimer@redhat.com> |
|
Date: Fri Jun 23 22:51:00 2017 +0200 |
|
|
|
inet_pton: Reject IPv6 addresses with many leading zeros [BZ #16637] |
|
|
|
2001:db8:00001::f is not a valid IPv6 address according to RFC 2373. |
|
|
|
We do not want this behavioral change in Red Hat Enterprise Linux 7. |
|
See rhbz#1484034 for some discussion. |
|
|
|
diff --git a/resolv/inet_pton.c b/resolv/inet_pton.c |
|
index 16ee33e0c0dfb015..b95da47c17ef8afc 100644 |
|
--- a/resolv/inet_pton.c |
|
+++ b/resolv/inet_pton.c |
|
@@ -144,8 +144,7 @@ inet_pton6 (const char *src, const char *src_endp, unsigned char *dst) |
|
{ |
|
unsigned char tmp[NS_IN6ADDRSZ], *tp, *endp, *colonp; |
|
const char *curtok; |
|
- int ch; |
|
- size_t xdigits_seen; /* Number of hex digits since colon. */ |
|
+ int ch, saw_xdigit; |
|
unsigned int val; |
|
|
|
tp = memset (tmp, '\0', NS_IN6ADDRSZ); |
|
@@ -163,7 +162,7 @@ inet_pton6 (const char *src, const char *src_endp, unsigned char *dst) |
|
} |
|
|
|
curtok = src; |
|
- xdigits_seen = 0; |
|
+ saw_xdigit = 0; |
|
val = 0; |
|
while (src < src_endp) |
|
{ |
|
@@ -171,19 +170,17 @@ inet_pton6 (const char *src, const char *src_endp, unsigned char *dst) |
|
int digit = hex_digit_value (ch); |
|
if (digit >= 0) |
|
{ |
|
- if (xdigits_seen == 4) |
|
- return 0; |
|
val <<= 4; |
|
val |= digit; |
|
if (val > 0xffff) |
|
return 0; |
|
- ++xdigits_seen; |
|
+ saw_xdigit = 1; |
|
continue; |
|
} |
|
if (ch == ':') |
|
{ |
|
curtok = src; |
|
- if (xdigits_seen == 0) |
|
+ if (!saw_xdigit) |
|
{ |
|
if (colonp) |
|
return 0; |
|
@@ -196,7 +193,7 @@ inet_pton6 (const char *src, const char *src_endp, unsigned char *dst) |
|
return 0; |
|
*tp++ = (unsigned char) (val >> 8) & 0xff; |
|
*tp++ = (unsigned char) val & 0xff; |
|
- xdigits_seen = 0; |
|
+ saw_xdigit = 0; |
|
val = 0; |
|
continue; |
|
} |
|
@@ -204,12 +201,12 @@ inet_pton6 (const char *src, const char *src_endp, unsigned char *dst) |
|
&& inet_pton4 (curtok, src_endp, tp) > 0) |
|
{ |
|
tp += NS_INADDRSZ; |
|
- xdigits_seen = 0; |
|
+ saw_xdigit = 0; |
|
break; /* '\0' was seen by inet_pton4. */ |
|
} |
|
return 0; |
|
} |
|
- if (xdigits_seen > 0) |
|
+ if (saw_xdigit) |
|
{ |
|
if (tp + NS_INT16SZ > endp) |
|
return 0; |
|
diff --git a/resolv/tst-inet_pton.c b/resolv/tst-inet_pton.c |
|
index 4bb9f8119378b467..7fffb24cdf9eb1f4 100644 |
|
--- a/resolv/tst-inet_pton.c |
|
+++ b/resolv/tst-inet_pton.c |
|
@@ -226,7 +226,13 @@ const struct test_case test_cases[] = |
|
}, |
|
{.input = "2", }, |
|
{.input = "2.", }, |
|
- {.input = "2001:db8:00001::f", }, |
|
+ {.input = "2001:db8:00001::f", |
|
+ .ipv6_ok = true, |
|
+ .ipv6_expected = { |
|
+ 0x20, 0x1, 0xd, 0xb8, 0x0, 0x1, 0x0, 0x0, |
|
+ 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0xf |
|
+ }, |
|
+ }, |
|
{.input = "2001:db8:10000::f", }, |
|
{.input = "2001:db8:1234:5678:abcd:ef01:2345:67", |
|
.ipv6_ok = true, |
|
@@ -448,7 +454,13 @@ const struct test_case test_cases[] = |
|
0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0 |
|
}, |
|
}, |
|
- {.input = "::00001", }, |
|
+ {.input = "::00001", |
|
+ .ipv6_ok = true, |
|
+ .ipv6_expected = { |
|
+ 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, |
|
+ 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1 |
|
+ }, |
|
+ }, |
|
{.input = "::1", |
|
.ipv6_ok = true, |
|
.ipv6_expected = {
|
|
|