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| author | Steinar H. Gunderson <sesse@google.com> | 2009-08-27 09:53:55 +0000 |
|---|---|---|
| committer | Steinar H. Gunderson <sesse@google.com> | 2009-08-27 09:53:55 +0000 |
| commit | cef560e871533a197acfdc5106481105ef244194 (patch) | |
| tree | a5708158cc5d2d4b48bfb4aa343a5aa97124fcf3 | |
| parent | c3872cb5dc9a29c4ec2c8863f661df7a8626ce11 (diff) | |
| download | c-ares-cef560e871533a197acfdc5106481105ef244194.tar.gz c-ares-cef560e871533a197acfdc5106481105ef244194.tar.bz2 c-ares-cef560e871533a197acfdc5106481105ef244194.zip | |
Support lookup of IPv4 literals in ares_gethostbyname(), even when the address family is set to AF_INET6.
| -rw-r--r-- | ares_gethostbyname.c | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/ares_gethostbyname.c b/ares_gethostbyname.c index 1ef25c7..d708dfb 100644 --- a/ares_gethostbyname.c +++ b/ares_gethostbyname.c @@ -245,15 +245,16 @@ static int fake_hostent(const char *name, int family, ares_host_callback callbac struct in_addr in; struct in6_addr in6; - if (family == AF_INET) + if (family == AF_INET || family == AF_INET6) { /* It only looks like an IP address if it's all numbers and dots. */ - int numdots = 0; + int numdots = 0, valid = 1; const char *p; for (p = name; *p; p++) { if (!ISDIGIT(*p) && *p != '.') { - return 0; + valid = 0; + break; } else if (*p == '.') { numdots++; } @@ -262,12 +263,15 @@ static int fake_hostent(const char *name, int family, ares_host_callback callbac /* if we don't have 3 dots, it is illegal * (although inet_addr doesn't think so). */ - if (numdots != 3) + if (numdots != 3 || !valid) result = 0; else result = ((in.s_addr = inet_addr(name)) == INADDR_NONE ? 0 : 1); + + if (result) + family = AF_INET; } - else if (family == AF_INET6) + if (family == AF_INET6) result = (ares_inet_pton(AF_INET6, name, &in6) < 1 ? 0 : 1); if (!result) |