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author | Rich Felker <dalias@aerifal.cx> | 2014-06-02 05:00:48 -0400 |
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committer | Rich Felker <dalias@aerifal.cx> | 2014-06-02 05:00:48 -0400 |
commit | 76f440cff73878a7359e944618a7722dfd23bdec (patch) | |
tree | 1792a5a1b2db7e946fcdda1da16e7bb0e1641127 /src/network/inet_aton.c | |
parent | 3330198060c7b3165a2fba530ffde5fc6706ecf2 (diff) | |
download | musl-76f440cff73878a7359e944618a7722dfd23bdec.tar.gz musl-76f440cff73878a7359e944618a7722dfd23bdec.tar.bz2 musl-76f440cff73878a7359e944618a7722dfd23bdec.tar.xz musl-76f440cff73878a7359e944618a7722dfd23bdec.zip |
remove cruft from old resolver and numeric ip parsing
the old resolver code used a function __ipparse which contained the
logic for inet_addr and inet_aton, which is needed in getaddrinfo.
this was phased out in the resolver overhaul in favor of directly
using inet_aton and inet_pton as appropriate.
this commit cleans up some stuff that was left behind.
Diffstat (limited to 'src/network/inet_aton.c')
-rw-r--r-- | src/network/inet_aton.c | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/src/network/inet_aton.c b/src/network/inet_aton.c new file mode 100644 index 00000000..0f9a45f6 --- /dev/null +++ b/src/network/inet_aton.c @@ -0,0 +1,41 @@ +#include <ctype.h> +#include <sys/socket.h> +#include <netinet/in.h> +#include <arpa/inet.h> +#include "libc.h" + +int __inet_aton(const char *s0, struct in_addr *dest) +{ + const char *s = s0; + unsigned char *d = (void *)dest; + unsigned long a[4] = { 0 }; + char *z; + int i; + + for (i=0; i<4; i++) { + a[i] = strtoul(s, &z, 0); + if (z==s || (*z && *z != '.') || !isdigit(*s)) + return 0; + if (!*z) break; + s=z+1; + } + if (i==4) return 0; + switch (i) { + case 0: + a[1] = a[0] & 0xffffff; + a[0] >>= 24; + case 1: + a[2] = a[1] & 0xffff; + a[1] >>= 16; + case 2: + a[3] = a[2] & 0xff; + a[2] >>= 8; + } + for (i=0; i<4; i++) { + if (a[i] > 255) return 0; + d[i] = a[i]; + } + return 1; +} + +weak_alias(__inet_aton, inet_aton); |