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author | Ulrich Drepper <drepper@redhat.com> | 2007-04-30 22:30:14 +0000 |
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committer | Ulrich Drepper <drepper@redhat.com> | 2007-04-30 22:30:14 +0000 |
commit | 37f02b1da57eb6807e849a5056bf973db840dd78 (patch) | |
tree | 5e68f223db4b38a8c829f6b6737140acf7b31ee7 /resolv/tst-inet_ntop.c | |
parent | 7ecfbd386a340b52b6491f47fcf37f236cc5eaf1 (diff) | |
download | glibc-37f02b1da57eb6807e849a5056bf973db840dd78.zip glibc-37f02b1da57eb6807e849a5056bf973db840dd78.tar.gz glibc-37f02b1da57eb6807e849a5056bf973db840dd78.tar.bz2 |
[BZ #4439]
2007-04-30 Jakub Jelinek <jakub@redhat.com>
[BZ #4439]
* resolv/inet_ntop.c (inet_ntop4): Take terminating '\0' into
account in the size check.
* resolv/tst-inet_ntop.c: New test.
* resolv/Makefile (tests): Add tst-inet_ntop.
Diffstat (limited to 'resolv/tst-inet_ntop.c')
-rw-r--r-- | resolv/tst-inet_ntop.c | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/resolv/tst-inet_ntop.c b/resolv/tst-inet_ntop.c new file mode 100644 index 0000000..a042c74 --- /dev/null +++ b/resolv/tst-inet_ntop.c @@ -0,0 +1,111 @@ +#include <arpa/inet.h> +#include <errno.h> +#include <netinet/in.h> +#include <stdio.h> +#include <string.h> + +int +main (void) +{ + struct in_addr addr4; + struct in6_addr addr6; + char buf[64]; + int result = 0; + + addr4.s_addr = 0xe0e0e0e0; + addr6.s6_addr16[0] = 0; + addr6.s6_addr16[1] = 0; + addr6.s6_addr16[2] = 0; + addr6.s6_addr16[3] = 0; + addr6.s6_addr16[4] = 0; + addr6.s6_addr16[5] = 0xffff; + addr6.s6_addr32[3] = 0xe0e0e0e0; + memset (buf, 'x', sizeof buf); + + if (inet_ntop (AF_INET, &addr4, buf, 15) != NULL) + { + puts ("1st inet_ntop returned non-NULL"); + result++; + } + else if (errno != ENOSPC) + { + puts ("1st inet_ntop didn't fail with ENOSPC"); + result++; + } + if (buf[15] != 'x') + { + puts ("1st inet_ntop wrote past the end of buffer"); + result++; + } + + if (inet_ntop (AF_INET, &addr4, buf, 16) != buf) + { + puts ("2nd inet_ntop did not return buf"); + result++; + } + if (memcmp (buf, "224.224.224.224\0" "xxxxxxxx", 24) != 0) + { + puts ("2nd inet_ntop wrote past the end of buffer"); + result++; + } + + if (inet_ntop (AF_INET6, &addr6, buf, 22) != NULL) + { + puts ("3rd inet_ntop returned non-NULL"); + result++; + } + else if (errno != ENOSPC) + { + puts ("3rd inet_ntop didn't fail with ENOSPC"); + result++; + } + if (buf[22] != 'x') + { + puts ("3rd inet_ntop wrote past the end of buffer"); + result++; + } + + if (inet_ntop (AF_INET6, &addr6, buf, 23) != buf) + { + puts ("4th inet_ntop did not return buf"); + result++; + } + if (memcmp (buf, "::ffff:224.224.224.224\0" "xxxxxxxx", 31) != 0) + { + puts ("4th inet_ntop wrote past the end of buffer"); + result++; + } + + memset (&addr6.s6_addr, 0xe0, sizeof (addr6.s6_addr)); + + if (inet_ntop (AF_INET6, &addr6, buf, 39) != NULL) + { + puts ("5th inet_ntop returned non-NULL"); + result++; + } + else if (errno != ENOSPC) + { + puts ("5th inet_ntop didn't fail with ENOSPC"); + result++; + } + if (buf[39] != 'x') + { + puts ("5th inet_ntop wrote past the end of buffer"); + result++; + } + + if (inet_ntop (AF_INET6, &addr6, buf, 40) != buf) + { + puts ("6th inet_ntop did not return buf"); + result++; + } + if (memcmp (buf, "e0e0:e0e0:e0e0:e0e0:e0e0:e0e0:e0e0:e0e0\0" + "xxxxxxxx", 48) != 0) + { + puts ("6th inet_ntop wrote past the end of buffer"); + result++; + } + + + return result; +} |