Index: fusl/src/network/inet_ntop.c |
diff --git a/fusl/src/network/inet_ntop.c b/fusl/src/network/inet_ntop.c |
new file mode 100644 |
index 0000000000000000000000000000000000000000..14f9f4c4018ed5dc0a3a4c9db1839c411135bfad |
--- /dev/null |
+++ b/fusl/src/network/inet_ntop.c |
@@ -0,0 +1,54 @@ |
+#include <sys/socket.h> |
+#include <arpa/inet.h> |
+#include <errno.h> |
+#include <stdio.h> |
+#include <string.h> |
+ |
+const char *inet_ntop(int af, const void *restrict a0, char *restrict s, socklen_t l) |
+{ |
+ const unsigned char *a = a0; |
+ int i, j, max, best; |
+ char buf[100]; |
+ |
+ switch (af) { |
+ case AF_INET: |
+ if (snprintf(s, l, "%d.%d.%d.%d", a[0],a[1],a[2],a[3]) < l) |
+ return s; |
+ break; |
+ case AF_INET6: |
+ if (memcmp(a, "\0\0\0\0\0\0\0\0\0\0\377\377", 12)) |
+ snprintf(buf, sizeof buf, |
+ "%x:%x:%x:%x:%x:%x:%x:%x", |
+ 256*a[0]+a[1],256*a[2]+a[3], |
+ 256*a[4]+a[5],256*a[6]+a[7], |
+ 256*a[8]+a[9],256*a[10]+a[11], |
+ 256*a[12]+a[13],256*a[14]+a[15]); |
+ else |
+ snprintf(buf, sizeof buf, |
+ "%x:%x:%x:%x:%x:%x:%d.%d.%d.%d", |
+ 256*a[0]+a[1],256*a[2]+a[3], |
+ 256*a[4]+a[5],256*a[6]+a[7], |
+ 256*a[8]+a[9],256*a[10]+a[11], |
+ a[12],a[13],a[14],a[15]); |
+ /* Replace longest /(^0|:)[:0]{2,}/ with "::" */ |
+ for (i=best=0, max=2; buf[i]; i++) { |
+ if (i && buf[i] != ':') continue; |
+ j = strspn(buf+i, ":0"); |
+ if (j>max) best=i, max=j; |
+ } |
+ if (max>2) { |
+ buf[best] = buf[best+1] = ':'; |
+ memmove(buf+best+2, buf+best+max, i-best-max+1); |
+ } |
+ if (strlen(buf) < l) { |
+ strcpy(s, buf); |
+ return s; |
+ } |
+ break; |
+ default: |
+ errno = EAFNOSUPPORT; |
+ return 0; |
+ } |
+ errno = ENOSPC; |
+ return 0; |
+} |