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Bug#27427: resolveip fails on hostnames with a leading digit

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Patch by Kasper Dupont.  No CLA required for this size of patch.

"resolveip" program produces incorrect result if given a hostname
starting with a digit.  Someone seems to have thought that names 
can not have digits at the beginning.

Instead, use the resolver library to work out the rules of hostnames, 
as it will undoubtedly be better at it than we are.
This commit is contained in:
cmiller@zippy.cornsilk.net 2008-01-23 11:34:08 -05:00
parent 9777809b33
commit c13d726f5d
2 changed files with 6 additions and 2 deletions
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2
configure.in
View File

@ -838,6 +838,8 @@ AC_CHECK_FUNC(p2open, , AC_CHECK_LIB(gen, p2open))
AC_CHECK_FUNC(bind, , AC_CHECK_LIB(bind, bind))
# Check if crypt() exists in libc or libcrypt, sets LIBS if needed
AC_SEARCH_LIBS(crypt, crypt, AC_DEFINE(HAVE_CRYPT, 1, [crypt]))
# See if we need a library for address lookup.
AC_SEARCH_LIBS(inet_aton, [socket nsl resolv])
# For the sched_yield() function on Solaris
AC_CHECK_FUNC(sched_yield, , AC_CHECK_LIB(posix4, sched_yield))

6
extra/resolveip.c
View File

@ -116,11 +116,13 @@ int main(int argc, char **argv)
while (argc--)
{
struct in_addr addr;
ip = *argv++;
if (my_isdigit(&my_charset_latin1,ip[0]))
/* Not compatible with IPv6! Probably should use getnameinfo(). */
if (inet_aton(ip, &addr) != 0)
{
taddr = inet_addr(ip);
taddr= addr.s_addr;
if (taddr == htonl(INADDR_BROADCAST))
{
puts("Broadcast");