POTD skeleton #49.

Signed-off-by: Toni Uhlig <matzeton@googlemail.com>

1 files changed, 49 insertions, 0 deletions

diff --git a/src/protocol.c b/src/protocol.c
new file mode 100644
index 0000000..0bea5a3
--- /dev/null
+++ b/src/protocol.c
@@ -0,0 +1,49 @@
+#include <stdlib.h>
+#include <string.h>
+#include <assert.h>
+
+#include "protocol.h"
+#include "log.h"
+#include "socket.h"
+
+
+int proto_init_ctx(protocol_ctx **ctx, proto_init_cb init_fn)
+{
+    assert(ctx && init_fn);
+    if (!*ctx)
+        *ctx = (protocol_ctx *) malloc(sizeof(**ctx));
+    assert(*ctx);
+
+    memset(*ctx, 0, sizeof(**ctx));
+    if (init_fn(*ctx))
+        return 1;
+
+    return 0;
+}
+
+int proto_setup(protocol_ctx *ctx, const char *listen_addr,
+                const char *listen_port, const char *jail_host,
+                const char *jail_port)
+{
+    assert(ctx);
+
+    if (fwd_setup_server(&ctx->src, listen_addr, listen_port))
+        return 1;
+    if (fwd_setup_client_silent(&ctx->dst, jail_host, jail_port))
+        return 1;
+
+    if (!ctx->cbs.on_listen)
+        return 1;
+    if (ctx->cbs.on_listen(ctx, listen_addr, listen_port))
+        return 1;
+
+    return 0;
+}
+
+int proto_validate_ctx(const protocol_ctx *ctx)
+{
+    assert(ctx);
+    assert(ctx->cbs.on_listen && ctx->cbs.on_shutdown);
+
+    return 0;
+}