diff options
Diffstat (limited to 'deps/uv/src/ares/ares_dns.h')
| -rw-r--r-- | deps/uv/src/ares/ares_dns.h | 27 |
1 files changed, 20 insertions, 7 deletions
diff --git a/deps/uv/src/ares/ares_dns.h b/deps/uv/src/ares/ares_dns.h index 6893c024c..34cf790df 100644 --- a/deps/uv/src/ares/ares_dns.h +++ b/deps/uv/src/ares/ares_dns.h @@ -1,5 +1,7 @@ +#ifndef HEADER_CARES_DNS_H +#define HEADER_CARES_DNS_H -/* Copyright 1998 by the Massachusetts Institute of Technology. +/* Copyright 1998, 2011 by the Massachusetts Institute of Technology. * * Permission to use, copy, modify, and distribute this * software and its documentation for any purpose and without @@ -14,12 +16,23 @@ * without express or implied warranty. */ -#ifndef ARES__DNS_H -#define ARES__DNS_H +/* + * Macro DNS__16BIT reads a network short (16 bit) given in network + * byte order, and returns its value as an unsigned short. + */ +#define DNS__16BIT(p) ((unsigned short)((unsigned int) 0xffff & \ + (((unsigned int)((unsigned char)(p)[0]) << 8U) | \ + ((unsigned int)((unsigned char)(p)[1]))))) -#define DNS__16BIT(p) (((p)[0] << 8) | (p)[1]) -#define DNS__32BIT(p) (((p)[0] << 24) | ((p)[1] << 16) | \ - ((p)[2] << 8) | (p)[3]) +/* + * Macro DNS__32BIT reads a network long (32 bit) given in network + * byte order, and returns its value as an unsigned int. + */ +#define DNS__32BIT(p) ((unsigned int) \ + (((unsigned int)((unsigned char)(p)[0]) << 24U) | \ + ((unsigned int)((unsigned char)(p)[1]) << 16U) | \ + ((unsigned int)((unsigned char)(p)[2]) << 8U) | \ + ((unsigned int)((unsigned char)(p)[3])))) #define DNS__SET16BIT(p, v) (((p)[0] = (unsigned char)(((v) >> 8) & 0xff)), \ ((p)[1] = (unsigned char)((v) & 0xff))) @@ -87,4 +100,4 @@ #define DNS_RR_SET_TTL(r) DNS__SET32BIT((r) + 4, v) #define DNS_RR_SET_LEN(r) DNS__SET16BIT((r) + 8, v) -#endif /* ARES__DNS_H */ +#endif /* HEADER_CARES_DNS_H */ |