Added HostInfo parser to help with IPv6 addresses and authentiation creds

packages/base/all/vendor-config-onl/src/python/onl/network/__init__.py

@@ -1,3 +1,82 @@
 """__init__.py
 
 """
+
+import subprocess
+
+class HostInfo:
+
+    def __init__(self, host,
+                 user=None, password=None,
+                 port=None,
+                 scope=None):
+        self.user = user
+        self.password = password
+        self.port = port
+
+        if scope is None and host.startswith('fe80:'):
+            cmd = ('ip', '-6', '-oneline', 'route', 'show',)
+            for line in subprocess.check_output(cmd).splitlines(False):
+                words = line.split()
+                if words[0].startswith('fe80:'):
+                    scope = words[2]
+                    break
+
+        if scope is not None:
+            self.host = host + '%' + scope
+        else:
+            self.host = host
+
+        # try to canonicalize the scope
+        # add scope to host
+        # set bhost to bracketed host
+
+        if ':' in host:
+            self.bhost = '[' + self.host + ']'
+        else:
+            self.bhost = self.host
+
+    @classmethod
+    def fromString(cls, hinfo):
+
+        buf = hinfo
+        l, sep, r = buf.partition('@')
+        if sep:
+            uinfo, buf = l, r
+            l, sep, r = uinfo.partition(':')
+            if sep:
+                u, p = l, r
+            else:
+                u, p = uinfo, None
+        else:
+            u = p = None
+
+        if not buf.startswith('['):
+            s = None
+            l, sep, r = buf.partition(':')
+            if sep:
+                h, p = l, int(r)
+            else:
+                h, p = buf, None
+        else:
+            l, sep, r = buf.partition(']')
+            if not sep:
+                raise ValueError("invalid host specifier %s" % hinfo)
+            h = l[1:]
+            if r and r.startswith(':'):
+                p = int(r[1:])
+            elif not r:
+                p = None
+            else:
+                raise ValueError("invalid host specifier %s" % hinfo)
+            i = h.find('%25')
+            if i > -1:
+                h, s = h[:i], h[i+3:]
+            else:
+                l, sep, r = h.partition('%')
+                if sep:
+                    h, s = l, r
+                else:
+                    s = None
+
+        return cls(h, port=p, user=u, password=p, scope=s)