Move network code to libtor-net.

There are some additional changes to come: those points are marked
by XXXX.

1 files changed, 50 insertions, 0 deletions

diff --git a/src/lib/net/resolve.h b/src/lib/net/resolve.h
new file mode 100644
index 0000000000..a225be87fe
--- /dev/null
+++ b/src/lib/net/resolve.h
@@ -0,0 +1,50 @@
+/* Copyright (c) 2003-2004, Roger Dingledine
+ * Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson.
+ * Copyright (c) 2007-2018, The Tor Project, Inc. */
+/* See LICENSE for licensing information */
+
+#ifndef TOR_RESOLVE_H
+#define TOR_RESOLVE_H
+
+#include "orconfig.h"
+#include "lib/cc/torint.h"
+#include "lib/testsupport/testsupport.h"
+#ifdef _WIN32
+#include <winsock2.h>
+#endif
+
+#if defined(HAVE_SECCOMP_H) && defined(__linux__)
+#define USE_SANDBOX_GETADDRINFO
+#endif
+
+MOCK_DECL(int,tor_lookup_hostname,(const char *name, uint32_t *addr));
+
+struct addrinfo;
+#ifdef USE_SANDBOX_GETADDRINFO
+/** Pre-calls getaddrinfo in order to pre-record result. */
+int sandbox_add_addrinfo(const char *addr);
+
+// XXXX rename these.  They are named as though they were sandbox-only,
+// XXXX but in fact they're the only allowed entry point to getaddrinfo.
+// XXXX They don't invoke the sandbox code; they only have an internal cache.
+struct addrinfo;
+/** Replacement for getaddrinfo(), using pre-recorded results. */
+int sandbox_getaddrinfo(const char *name, const char *servname,
+                        const struct addrinfo *hints,
+                        struct addrinfo **res);
+void sandbox_freeaddrinfo(struct addrinfo *addrinfo);
+void sandbox_free_getaddrinfo_cache(void);
+void sandbox_make_getaddrinfo_cache_active(void);
+#else /* !(defined(USE_SANDBOX_GETADDRINFO)) */
+#define sandbox_getaddrinfo(name, servname, hints, res)  \
+  getaddrinfo((name),(servname), (hints),(res))
+#define sandbox_add_addrinfo(name) \
+  ((void)(name))
+#define sandbox_freeaddrinfo(addrinfo) \
+  freeaddrinfo((addrinfo))
+#define sandbox_free_getaddrinfo_cache()
+#endif /* defined(USE_SANDBOX_GETADDRINFO) */
+
+void sandbox_disable_getaddrinfo_cache(void);
+
+#endif