diff options
Diffstat (limited to 'libc/netbsd/resolv/res_comp.c')
| -rw-r--r-- | libc/netbsd/resolv/res_comp.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/libc/netbsd/resolv/res_comp.c b/libc/netbsd/resolv/res_comp.c index 6991e8b..77b81b4 100644 --- a/libc/netbsd/resolv/res_comp.c +++ b/libc/netbsd/resolv/res_comp.c @@ -147,6 +147,12 @@ dn_skipname(const u_char *ptr, const u_char *eom) { * tell us anything about network-format data. The rest of the BIND system * is not careful about this, but for some reason, we're doing it right here. */ + +/* BIONIC: We also accept underscores in the middle of labels. + * This extension is needed to make resolution on some VPN networks + * work properly. + */ + #define PERIOD 0x2e #define hyphenchar(c) ((c) == 0x2d) #define bslashchar(c) ((c) == 0x5c) @@ -155,9 +161,10 @@ dn_skipname(const u_char *ptr, const u_char *eom) { #define alphachar(c) (((c) >= 0x41 && (c) <= 0x5a) \ || ((c) >= 0x61 && (c) <= 0x7a)) #define digitchar(c) ((c) >= 0x30 && (c) <= 0x39) +#define underscorechar(c) ((c) == 0x5f) #define borderchar(c) (alphachar(c) || digitchar(c)) -#define middlechar(c) (borderchar(c) || hyphenchar(c)) +#define middlechar(c) (borderchar(c) || hyphenchar(c) || underscorechar(c)) #define domainchar(c) ((c) > 0x20 && (c) < 0x7f) int |