Import sources from 2011-03-30 iso image

1 files changed, 52 insertions, 0 deletions

diff --git a/sys/src/ape/lib/bsd/inet_addr.c b/sys/src/ape/lib/bsd/inet_addr.c
new file mode 100755
index 000000000..63cd69cc4
--- /dev/null
+++ b/sys/src/ape/lib/bsd/inet_addr.c
@@ -0,0 +1,52 @@
+/* posix */
+#include <sys/types.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+
+/* bsd extensions */
+#include <sys/uio.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+
+#define CLASS(x)	(x[0]>>6)
+
+unsigned long
+inet_addr(char *from)
+{
+	int i;
+	char *p;
+	unsigned char to[4];
+	unsigned long x;
+ 
+	p = from;
+	memset(to, 0, 4);
+	for(i = 0; i < 4 && *p; i++){
+		to[i] = strtoul(p, &p, 0);
+		if(*p == '.')
+			p++;
+	}
+
+	switch(CLASS(to)){
+	case 0:	/* class A - 1 byte net */
+	case 1:
+		if(i == 3){
+			to[3] = to[2];
+			to[2] = to[1];
+			to[1] = 0;
+		} else if (i == 2){
+			to[3] = to[1];
+			to[1] = 0;
+		}
+		break;
+	case 2:	/* class B - 2 byte net */
+		if(i == 3){
+			to[3] = to[2];
+			to[2] = 0;
+		}
+		break;
+	}
+	x = nptohl(to);
+	x = htonl(x);
+	return x;
+}