6 files changed, 127 insertions, 11 deletions
diff --git a/include/git2/common.h b/include/git2/common.h
index dd6909f90..ad23d2d34 100644
--- a/include/git2/common.h
+++ b/include/git2/common.h
@@ -86,6 +86,11 @@ GIT_BEGIN_DECL
 #define GIT_PATH_MAX 4096
 
 /**
+ * The string representation of the null object ID.
+ */
+#define GIT_OID_HEX_ZERO "0000000000000000000000000000000000000000"
+
+/**
  * Return the version of the libgit2 library
  * being currently used.
  *
diff --git a/include/git2/errors.h b/include/git2/errors.h
index 45e04578d..9dd42f0c4 100644
--- a/include/git2/errors.h
+++ b/include/git2/errors.h
@@ -29,6 +29,7 @@ enum {
 	GIT_EBAREREPO = -8,
 	GIT_EORPHANEDHEAD = -9,
 	GIT_EUNMERGED = -10,
+	GIT_ENONFASTFORWARD = -11,
 
 	GIT_PASSTHROUGH = -30,
 	GIT_ITEROVER = -31,
diff --git a/include/git2/object.h b/include/git2/object.h
index fcc56cb27..66d692161 100644
--- a/include/git2/object.h
+++ b/include/git2/object.h
@@ -95,6 +95,17 @@ GIT_EXTERN(const git_oid *) git_object_id(const git_object *obj);
 GIT_EXTERN(git_otype) git_object_type(const git_object *obj);
 
 /**
+ * Get the object type of an object id
+ *
+ * @param obj the repository object
+ * @return the object's type
+ */
+GIT_EXTERN(int) git_object_oid2type(
+		git_otype *type,
+		git_repository *repo,
+		const git_oid *oid);
+
+/**
  * Get the repository that owns this object
  *
  * Freeing or calling `git_repository_close` on the
diff --git a/include/git2/push.h b/include/git2/push.h
new file mode 100644
index 000000000..900a1833e
--- /dev/null
+++ b/include/git2/push.h
@@ -0,0 +1,80 @@
+/*
+ * Copyright (C) 2009-2012 the libgit2 contributors
+ *
+ * This file is part of libgit2, distributed under the GNU GPL v2 with
+ * a Linking Exception. For full terms see the included COPYING file.
+ */
+#ifndef INCLUDE_git_push_h__
+#define INCLUDE_git_push_h__
+
+#include "common.h"
+
+/**
+ * @file git2/push.h
+ * @brief Git push management functions
+ * @defgroup git_push push management functions
+ * @ingroup Git
+ * @{
+ */
+GIT_BEGIN_DECL
+
+/**
+ * Create a new push object
+ *
+ * @param out New push object
+ * @param remote Remote instance
+ *
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_push_new(git_push **out, git_remote *remote);
+
+/**
+ * Add a refspec to be pushed
+ *
+ * @param push The push object
+ * @param refspec Refspec string
+ *
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_push_add_refspec(git_push *push, const char *refspec);
+
+/**
+ * Actually push all given refspecs
+ *
+ * @param push The push object
+ *
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_push_finish(git_push *push);
+
+/**
+ * Check if remote side successfully unpacked
+ *
+ * @param push The push object
+ *
+ * @return true if equal, false otherwise
+ */
+GIT_EXTERN(int) git_push_unpack_ok(git_push *push);
+
+/**
+ * Call callback `cb' on each status
+ *
+ * @param push The push object
+ * @param cb The callback to call on each object
+ *
+ * @return 0 on success, GIT_EUSER on non-zero callback, or error code
+ */
+GIT_EXTERN(int) git_push_status_foreach(git_push *push,
+			int (*cb)(const char *ref, const char *msg, void *data),
+			void *data);
+
+/**
+ * Free the given push object
+ *
+ * @param push The push object
+ */
+GIT_EXTERN(void) git_push_free(git_push *push);
+
+/** @} */
+GIT_END_DECL
+#endif
diff --git a/include/git2/transport.h b/include/git2/transport.h
index 5a27d7f97..61726922f 100644
--- a/include/git2/transport.h
+++ b/include/git2/transport.h
@@ -9,6 +9,7 @@
 
 #include "indexer.h"
 #include "net.h"
+#include "types.h"
 
 /**
  * @file git2/transport.h
@@ -102,8 +103,8 @@ typedef struct git_transport {
 		git_headlist_cb list_cb,
 		void *payload);
 
-	/* Reserved until push is implemented. */
-	int (*push)(struct git_transport *transport);
+	/* Executes the push whose context is in the git_push object. */
+	int (*push)(struct git_transport *transport, git_push *push);
 
 	/* This function may be called after a successful call to connect(), when
 	 * the direction is FETCH. The function performs a negotiation to calculate
@@ -123,7 +124,7 @@ typedef struct git_transport {
 		void *progress_payload);
 
 	/* Checks to see if the transport is connected */
-	int (*is_connected)(struct git_transport *transport, int *connected);
+	int (*is_connected)(struct git_transport *transport);
 
 	/* Reads the flags value previously passed into connect() */
 	int (*read_flags)(struct git_transport *transport, int *flags);
@@ -145,10 +146,11 @@ typedef struct git_transport {
  * git:// or http://) and a transport object is returned to the caller.
  *
  * @param out The newly created transport (out)
+ * @param owner The git_remote which will own this transport
  * @param url The URL to connect to
  * @return 0 or an error code
  */
-GIT_EXTERN(int) git_transport_new(git_transport **out, const char *url);
+GIT_EXTERN(int) git_transport_new(git_transport **out, git_remote *owner, const char *url);
 
 /**
  * Function which checks to see if a transport could be created for the
@@ -161,7 +163,7 @@ GIT_EXTERN(int) git_transport_new(git_transport **out, const char *url);
 GIT_EXTERN(int) git_transport_valid_url(const char *url);
 
 /* Signature of a function which creates a transport */
-typedef int (*git_transport_cb)(git_transport **out, void *payload);
+typedef int (*git_transport_cb)(git_transport **out, git_remote *owner, void *param);
 
 /* Transports which come with libgit2 (match git_transport_cb). The expected
  * value for "param" is listed in-line below. */
@@ -169,34 +171,40 @@ typedef int (*git_transport_cb)(git_transport **out, void *payload);
 /**
  * Create an instance of the dummy transport.
  *
- * @param transport The newly created transport (out)
+ * @param out The newly created transport (out)
+ * @param owner The git_remote which will own this transport
  * @param payload You must pass NULL for this parameter.
  * @return 0 or an error code
  */
 GIT_EXTERN(int) git_transport_dummy(
-	git_transport **transport,
+	git_transport **out,
+	git_remote *owner,
 	/* NULL */ void *payload);
 
 /**
  * Create an instance of the local transport.
  *
- * @param transport The newly created transport (out)
+ * @param out The newly created transport (out)
+ * @param owner The git_remote which will own this transport
  * @param payload You must pass NULL for this parameter.
  * @return 0 or an error code
  */
 GIT_EXTERN(int) git_transport_local(
-	git_transport **transport,
+	git_transport **out,
+	git_remote *owner,
 	/* NULL */ void *payload);
 
 /**
  * Create an instance of the smart transport.
  *
- * @param transport The newly created transport (out)
+ * @param out The newly created transport (out)
+ * @param owner The git_remote which will own this transport
  * @param payload A pointer to a git_smart_subtransport_definition
  * @return 0 or an error code
  */
 GIT_EXTERN(int) git_transport_smart(
-	git_transport **transport,
+	git_transport **out,
+	git_remote *owner,
 	/* (git_smart_subtransport_definition *) */ void *payload);
 
 /*
@@ -221,6 +229,8 @@ GIT_EXTERN(int) git_transport_smart(
 typedef enum {
 	GIT_SERVICE_UPLOADPACK_LS = 1,
 	GIT_SERVICE_UPLOADPACK = 2,
+	GIT_SERVICE_RECEIVEPACK_LS = 3,
+	GIT_SERVICE_RECEIVEPACK = 4,
 } git_smart_service_t;
 
 struct git_smart_subtransport;
@@ -255,6 +265,14 @@ typedef struct git_smart_subtransport {
 			const char *url,
 			git_smart_service_t action);
 
+	/* Subtransports are guaranteed a call to close() between
+	 * calls to action(), except for the following two "natural" progressions
+	 * of actions against a constant URL.
+	 *
+	 * 1. UPLOADPACK_LS -> UPLOADPACK
+	 * 2. RECEIVEPACK_LS -> RECEIVEPACK */
+	int (* close)(struct git_smart_subtransport *transport);
+
 	void (* free)(struct git_smart_subtransport *transport);
 } git_smart_subtransport;
 
diff --git a/include/git2/types.h b/include/git2/types.h
index 11bcf270f..06fcf3613 100644
--- a/include/git2/types.h
+++ b/include/git2/types.h
@@ -187,6 +187,7 @@ typedef enum {
 
 typedef struct git_refspec git_refspec;
 typedef struct git_remote git_remote;
+typedef struct git_push git_push;
 
 typedef struct git_remote_head git_remote_head;
 typedef struct git_remote_callbacks git_remote_callbacks;