diff options
| -rw-r--r-- | libc/inet/addr.c | 60 |
1 files changed, 38 insertions, 22 deletions
diff --git a/libc/inet/addr.c b/libc/inet/addr.c index 75ebc191e..5c4005a18 100644 --- a/libc/inet/addr.c +++ b/libc/inet/addr.c @@ -28,6 +28,22 @@ int inet_aton(const char *cp, struct in_addr *addrptr); #ifdef L_inet_aton +/* + * More undocumented inet_aton features. + * (read: uclibc doesnt support but glibc does) + * http://www.mkssoftware.com/docs/man3/inet_aton.3.asp + * + * *cp can take the form of: + * a.b.c.d - {a,b,c,d} -> 1 byte + * a.b.c - {a,b} -> 1 byte {c} -> 2 bytes + * a.b - {a} -> 1 byte {b} -> 3 bytes + * a - {a} -> 4 bytes + * + * Each part may be decimal, octal, or hexadecimal as in ISO C. + * 0x or 0X -> hexadecimal + * leading 0 -> octal + * all else -> decimal + */ int inet_aton(cp, addrptr) const char *cp; struct in_addr *addrptr; @@ -71,7 +87,7 @@ struct in_addr *addrptr; * of the input string, but does not store the result. */ if (addrptr) { - addrptr->s_addr = htonl(addr); + addrptr->s_addr = htonl(addr); } return 1; @@ -99,7 +115,7 @@ char *inet_ntoa_r(struct in_addr in, char buf[INET_NTOA_MAX_LEN]) in_addr_t addr = ntohl(in.s_addr); int i; char *p, *q; - + q = 0; p = buf + INET_NTOA_MAX_LEN - 1; /* cannot use sizeof(buf) here */ for (i=0 ; i < 4 ; i++ ) { @@ -128,18 +144,18 @@ char *inet_ntoa(struct in_addr in) */ struct in_addr inet_makeaddr(in_addr_t net, in_addr_t host) { - in_addr_t addr; - - if (net < 128) - addr = (net << IN_CLASSA_NSHIFT) | (host & IN_CLASSA_HOST); - else if (net < 65536) - addr = (net << IN_CLASSB_NSHIFT) | (host & IN_CLASSB_HOST); - else if (net < 16777216UL) - addr = (net << IN_CLASSC_NSHIFT) | (host & IN_CLASSC_HOST); - else - addr = net | host; - addr = htonl(addr); - return (*(struct in_addr *)&addr); + in_addr_t addr; + + if (net < 128) + addr = (net << IN_CLASSA_NSHIFT) | (host & IN_CLASSA_HOST); + else if (net < 65536) + addr = (net << IN_CLASSB_NSHIFT) | (host & IN_CLASSB_HOST); + else if (net < 16777216UL) + addr = (net << IN_CLASSC_NSHIFT) | (host & IN_CLASSC_HOST); + else + addr = net | host; + addr = htonl(addr); + return (*(struct in_addr *)&addr); } #endif @@ -172,14 +188,14 @@ in_addr_t inet_lnaof(struct in_addr in) in_addr_t inet_netof(struct in_addr in) { - in_addr_t i = ntohl(in.s_addr); - - if (IN_CLASSA(i)) - return (((i)&IN_CLASSA_NET) >> IN_CLASSA_NSHIFT); - else if (IN_CLASSB(i)) - return (((i)&IN_CLASSB_NET) >> IN_CLASSB_NSHIFT); - else - return (((i)&IN_CLASSC_NET) >> IN_CLASSC_NSHIFT); + in_addr_t i = ntohl(in.s_addr); + + if (IN_CLASSA(i)) + return (((i)&IN_CLASSA_NET) >> IN_CLASSA_NSHIFT); + else if (IN_CLASSB(i)) + return (((i)&IN_CLASSB_NET) >> IN_CLASSB_NSHIFT); + else + return (((i)&IN_CLASSC_NET) >> IN_CLASSC_NSHIFT); } #endif |