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Unified Diff: fusl/src/network/inet_aton.c

Issue 1573973002: Add a "fork" of musl as //fusl. (Closed) Base URL: https://github.com/domokit/mojo.git@master
Patch Set: Created 4 years, 11 months ago
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Index: fusl/src/network/inet_aton.c
diff --git a/fusl/src/network/inet_aton.c b/fusl/src/network/inet_aton.c
new file mode 100644
index 0000000000000000000000000000000000000000..0f9a45f66ddee9a0a747be77002208300c692388
--- /dev/null
+++ b/fusl/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);
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