Push! By schu, phkelley, and congyiwu, et al

include/git2.h

@@ -40,6 +40,7 @@
 #include "git2/remote.h"
 #include "git2/clone.h"
 #include "git2/checkout.h"
+#include "git2/push.h"
 
 #include "git2/attr.h"
 #include "git2/ignore.h"

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.
  *

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,

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

include/git2/push.h

+/*
+ * 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

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;
 

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;

src/object.c

@@ -373,3 +373,19 @@ int git_object_peel(
 	git_object_free(deref);
 	return -1;
 }
+
+int git_object_oid2type(
+	git_otype *type,
+	git_repository *repo,
+	const git_oid *oid)
+{
+	git_object *obj;
+
+	if (git_object_lookup(&obj, repo, oid, GIT_OBJ_ANY) < 0)
+		return -1;
+
+	*type = git_object_type(obj);
+
+	git_object_free(obj);
+	return 0;
+}

src/pack-objects.c

@@ -604,12 +604,6 @@ on_error:
 	return -1;
 }
 
-static int send_pack_file(void *buf, size_t size, void *data)
-{
-	gitno_socket *s = (gitno_socket *)data;
-	return gitno_send(s, buf, size, 0);
-}
-
 static int write_pack_buf(void *buf, size_t size, void *data)
 {
 	git_buf *b = (git_buf *)data;
@@ -1233,12 +1227,6 @@ static int prepare_pack(git_packbuilder *pb)
 
 #define PREPARE_PACK if (prepare_pack(pb) < 0) { return -1; }
 
-int git_packbuilder_send(git_packbuilder *pb, gitno_socket *s)
-{
-	PREPARE_PACK;
-	return write_pack(pb, &send_pack_file, s);
-}
-
 int git_packbuilder_foreach(git_packbuilder *pb, int (*cb)(void *buf, size_t size, void *payload), void *payload)
 {
 	PREPARE_PACK;
@@ -1264,6 +1252,10 @@ static int cb_tree_walk(const char *root, const git_tree_entry *entry, void *pay
 	git_packbuilder *pb = payload;
 	git_buf buf = GIT_BUF_INIT;
 
+	/* A commit inside a tree represents a submodule commit and should be skipped. */
+	if(git_tree_entry_type(entry) == GIT_OBJ_COMMIT)
+		return 0;
+
 	git_buf_puts(&buf, root);
 	git_buf_puts(&buf, git_tree_entry_name(entry));
 

src/pack-objects.h

@@ -82,7 +82,6 @@ struct git_packbuilder {
 	bool done;
 };
 
-int git_packbuilder_send(git_packbuilder *pb, gitno_socket *s);
 int git_packbuilder_write_buf(git_buf *buf, git_packbuilder *pb);
 
 #endif /* INCLUDE_pack_objects_h__ */

src/push.c

+/*
+ * 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.
+ */
+
+#include "git2.h"
+
+#include "common.h"
+#include "pack.h"
+#include "pack-objects.h"
+#include "remote.h"
+#include "vector.h"
+#include "push.h"
+
+int git_push_new(git_push **out, git_remote *remote)
+{
+	git_push *p;
+
+	*out = NULL;
+
+	p = git__calloc(1, sizeof(*p));
+	GITERR_CHECK_ALLOC(p);
+
+	p->repo = remote->repo;
+	p->remote = remote;
+	p->report_status = 1;
+
+	if (git_vector_init(&p->specs, 0, NULL) < 0) {
+		git__free(p);
+		return -1;
+	}
+
+	if (git_vector_init(&p->status, 0, NULL) < 0) {
+		git_vector_free(&p->specs);
+		git__free(p);
+		return -1;
+	}
+
+	*out = p;
+	return 0;
+}
+
+static void free_refspec(push_spec *spec)
+{
+	if (spec == NULL)
+		return;
+
+	if (spec->lref)
+		git__free(spec->lref);
+
+	if (spec->rref)
+		git__free(spec->rref);
+
+	git__free(spec);
+}
+
+static void free_status(push_status *status)
+{
+	if (status == NULL)
+		return;
+
+	if (status->msg)
+		git__free(status->msg);
+
+	git__free(status->ref);
+	git__free(status);
+}
+
+static int check_ref(char *ref)
+{
+	if (strcmp(ref, "HEAD") &&
+	    git__prefixcmp(ref, "refs/heads/") &&
+	    git__prefixcmp(ref, "refs/tags/")) {
+		giterr_set(GITERR_INVALID, "No valid reference '%s'", ref);
+		return -1;
+	}
+	return 0;
+}
+
+static int parse_refspec(push_spec **spec, const char *str)
+{
+	push_spec *s;
+	char *delim;
+
+	*spec = NULL;
+
+	s = git__calloc(1, sizeof(*s));
+	GITERR_CHECK_ALLOC(s);
+
+	if (str[0] == '+') {
+		s->force = true;
+		str++;
+	}
+
+#define check(ref) \
+	if (!ref || check_ref(ref) < 0) goto on_error
+
+	delim = strchr(str, ':');
+	if (delim == NULL) {
+		s->lref = git__strdup(str);
+		check(s->lref);
+		s->rref = NULL;
+	} else {
+		if (delim - str) {
+			s->lref = git__strndup(str, delim - str);
+			check(s->lref);
+		} else
+			s->lref = NULL;
+
+		if (strlen(delim + 1)) {
+			s->rref = git__strdup(delim + 1);
+			check(s->rref);
+		} else
+			s->rref = NULL;
+	}
+
+	if (!s->lref && !s->rref)
+		goto on_error;
+
+#undef check
+
+	*spec = s;
+	return 0;
+
+on_error:
+	free_refspec(s);
+	return -1;
+}
+
+int git_push_add_refspec(git_push *push, const char *refspec)
+{
+	push_spec *spec;
+
+	if (parse_refspec(&spec, refspec) < 0 ||
+	    git_vector_insert(&push->specs, spec) < 0)
+		return -1;
+
+	return 0;
+}
+
+static int revwalk(git_vector *commits, git_push *push)
+{
+	git_remote_head *head;
+	push_spec *spec;
+	git_revwalk *rw;
+	git_oid oid;
+	unsigned int i;
+	int error = -1;
+
+	if (git_revwalk_new(&rw, push->repo) < 0)
+		return -1;
+
+	git_revwalk_sorting(rw, GIT_SORT_TIME);
+
+	git_vector_foreach(&push->specs, i, spec) {
+		if (git_oid_iszero(&spec->loid))
+			/*
+			 * Delete reference on remote side;
+			 * nothing to do here.
+			 */
+			continue;
+
+		if (git_oid_equal(&spec->loid, &spec->roid))
+			continue; /* up-to-date */
+
+		if (git_revwalk_push(rw, &spec->loid) < 0)
+			goto on_error;
+
+		if (!spec->force) {
+			git_oid base;
+
+			if (git_oid_iszero(&spec->roid))
+				continue;
+
+			if (!git_odb_exists(push->repo->_odb, &spec->roid)) {
+				giterr_clear();
+				error = GIT_ENONFASTFORWARD;
+				goto on_error;
+			}
+
+			error = git_merge_base(&base, push->repo,
+					       &spec->loid, &spec->roid);
+
+			if (error == GIT_ENOTFOUND ||
+				(!error && !git_oid_equal(&base, &spec->roid))) {
+				giterr_clear();
+				error = GIT_ENONFASTFORWARD;
+				goto on_error;
+			}
+
+			if (error < 0)
+				goto on_error;
+		}
+	}
+
+	git_vector_foreach(&push->remote->refs, i, head) {
+		if (git_oid_iszero(&head->oid))
+			continue;
+
+		/* TODO */
+		git_revwalk_hide(rw, &head->oid);
+	}
+
+	while ((error = git_revwalk_next(&oid, rw)) == 0) {
+		git_oid *o = git__malloc(GIT_OID_RAWSZ);
+		GITERR_CHECK_ALLOC(o);
+		git_oid_cpy(o, &oid);
+		if (git_vector_insert(commits, o) < 0) {
+			error = -1;
+			goto on_error;
+		}
+	}
+
+on_error:
+	git_revwalk_free(rw);
+	return error == GIT_ITEROVER ? 0 : error;
+}
+
+static int queue_objects(git_push *push)
+{
+	git_vector commits;
+	git_oid *o;
+	unsigned int i;
+	int error;
+
+	if (git_vector_init(&commits, 0, NULL) < 0)
+		return -1;
+
+	if ((error = revwalk(&commits, push)) < 0)
+		goto on_error;
+
+	if (!commits.length) {
+		git_vector_free(&commits);
+		return 0; /* nothing to do */
+	}
+
+	git_vector_foreach(&commits, i, o) {
+		if ((error = git_packbuilder_insert(push->pb, o, NULL)) < 0)
+			goto on_error;
+	}
+
+	git_vector_foreach(&commits, i, o) {
+		git_object *obj;
+
+		if ((error = git_object_lookup(&obj, push->repo, o, GIT_OBJ_ANY)) < 0)
+			goto on_error;
+
+		switch (git_object_type(obj)) {
+		case GIT_OBJ_TAG: /* TODO: expect tags */
+		case GIT_OBJ_COMMIT:
+			if ((error = git_packbuilder_insert_tree(push->pb,
+					git_commit_tree_id((git_commit *)obj))) < 0) {
+				git_object_free(obj);
+				goto on_error;
+			}
+			break;
+		case GIT_OBJ_TREE:
+		case GIT_OBJ_BLOB:
+		default:
+			git_object_free(obj);
+			giterr_set(GITERR_INVALID, "Given object type invalid");
+			error = -1;
+			goto on_error;
+		}
+		git_object_free(obj);
+	}
+	error = 0;
+
+on_error:
+	git_vector_foreach(&commits, i, o) {
+		git__free(o);
+	}
+	git_vector_free(&commits);
+	return error;
+}
+
+static int calculate_work(git_push *push)
+{
+	git_remote_head *head;
+	push_spec *spec;
+	unsigned int i, j;
+
+	git_vector_foreach(&push->specs, i, spec) {
+		if (spec->lref) {
+			if (git_reference_name_to_id(
+					&spec->loid, push->repo, spec->lref) < 0) {
+				giterr_set(GIT_ENOTFOUND, "No such reference '%s'", spec->lref);
+				return -1;
+			}
+
+			if (!spec->rref) {
+				/*
+				 * No remote reference given; if we find a remote
+				 * reference with the same name we will update it,
+				 * otherwise a new reference will be created.
+				 */
+				git_vector_foreach(&push->remote->refs, j, head) {
+					if (!strcmp(spec->lref, head->name)) {
+						/*
+						 * Update remote reference
+						 */
+						git_oid_cpy(&spec->roid, &head->oid);
+
+						break;
+					}
+				}
+			} else {
+				/*
+				 * Remote reference given; update the given
+				 * reference or create it.
+				 */
+				git_vector_foreach(&push->remote->refs, j, head) {
+					if (!strcmp(spec->rref, head->name)) {
+						/*
+						 * Update remote reference
+						 */
+						git_oid_cpy(&spec->roid, &head->oid);
+
+						break;
+					}
+				}
+			}
+		}
+	}
+
+	return 0;
+}
+
+static int do_push(git_push *push)
+{
+	int error;
+	git_transport *transport = push->remote->transport;
+
+	/*
+	 * A pack-file MUST be sent if either create or update command
+	 * is used, even if the server already has all the necessary
+	 * objects.  In this case the client MUST send an empty pack-file.
+	 */
+
+	if ((error = git_packbuilder_new(&push->pb, push->repo)) < 0 ||
+		(error = calculate_work(push)) < 0 ||
+		(error = queue_objects(push)) < 0 ||
+		(error = transport->push(transport, push)) < 0)
+		goto on_error;
+
+	error = 0;
+
+on_error:
+	git_packbuilder_free(push->pb);
+	return error;
+}
+
+static int cb_filter_refs(git_remote_head *ref, void *data)
+{
+	git_remote *remote = (git_remote *) data;
+	return git_vector_insert(&remote->refs, ref);
+}
+
+static int filter_refs(git_remote *remote)
+{
+	git_vector_clear(&remote->refs);
+	return git_remote_ls(remote, cb_filter_refs, remote);
+}
+
+int git_push_finish(git_push *push)
+{
+	int error;
+
+	if (!git_remote_connected(push->remote) &&
+		(error = git_remote_connect(push->remote, GIT_DIRECTION_PUSH)) < 0)
+		return error;
+
+	if ((error = filter_refs(push->remote)) < 0 ||
+		(error = do_push(push)) < 0)
+		return error;
+
+	return 0;
+}
+
+int git_push_unpack_ok(git_push *push)
+{
+	return push->unpack_ok;
+}
+
+int git_push_status_foreach(git_push *push,
+		int (*cb)(const char *ref, const char *msg, void *data),
+		void *data)
+{
+	push_status *status;
+	unsigned int i;
+
+	git_vector_foreach(&push->status, i, status) {
+		if (cb(status->ref, status->msg, data) < 0)
+			return GIT_EUSER;
+	}
+
+	return 0;
+}
+
+void git_push_free(git_push *push)
+{
+	push_spec *spec;
+	push_status *status;
+	unsigned int i;
+
+	if (push == NULL)
+		return;
+
+	git_vector_foreach(&push->specs, i, spec) {
+		free_refspec(spec);
+	}
+	git_vector_free(&push->specs);
+
+	git_vector_foreach(&push->status, i, status) {
+		free_status(status);
+	}
+	git_vector_free(&push->status);
+
+	git__free(push);
+}

src/push.h

+/*
+ * 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_push_h__
+#define INCLUDE_push_h__
+
+#include "git2.h"
+
+typedef struct push_spec {
+	char *lref;
+	char *rref;
+
+	git_oid loid;
+	git_oid roid;
+
+	bool force;
+} push_spec;
+
+typedef struct push_status {
+	bool ok;
+
+	char *ref;
+	char *msg;
+} push_status;
+
+struct git_push {
+	git_repository *repo;
+	git_packbuilder *pb;
+	git_remote *remote;
+	git_vector specs;
+	bool report_status;
+
+	/* report-status */
+	bool unpack_ok;
+	git_vector status;
+};
+
+#endif

src/reflog.h

@@ -17,8 +17,6 @@
 
 #define GIT_REFLOG_SIZE_MIN (2*GIT_OID_HEXSZ+2+17)
 
-#define GIT_OID_HEX_ZERO "0000000000000000000000000000000000000000"
-
 struct git_reflog_entry {
 	git_oid oid_old;
 	git_oid oid_cur;

src/remote.c

@@ -488,13 +488,13 @@ int git_remote_connect(git_remote *remote, git_direction direction)
 
 	/* A transport could have been supplied in advance with
 	 * git_remote_set_transport */
-	if (!t && git_transport_new(&t, url) < 0)
+	if (!t && git_transport_new(&t, remote, url) < 0)
 		return -1;
 
 	if (t->set_callbacks &&
 		t->set_callbacks(t, remote->callbacks.progress, NULL, remote->callbacks.payload) < 0)
 		goto on_error;
-	
+
 	if (!remote->check_cert)
 		flags |= GIT_TRANSPORTFLAGS_NO_CHECK_CERT;
 
@@ -507,6 +507,10 @@ int git_remote_connect(git_remote *remote, git_direction direction)
 
 on_error:
 	t->free(t);
+
+	if (t == remote->transport)
+		remote->transport = NULL;
+
 	return -1;
 }
 
@@ -514,7 +518,7 @@ int git_remote_ls(git_remote *remote, git_headlist_cb list_cb, void *payload)
 {
 	assert(remote);
 
-	if (!remote->transport) {
+	if (!git_remote_connected(remote)) {
 		giterr_set(GITERR_NET, "The remote is not connected");
 		return -1;
 	}
@@ -522,6 +526,63 @@ int git_remote_ls(git_remote *remote, git_headlist_cb list_cb, void *payload)
 	return remote->transport->ls(remote->transport, list_cb, payload);
 }
 
+int git_remote__get_http_proxy(git_remote *remote, bool use_ssl, char **proxy_url)
+{
+	git_config *cfg;
+	const char *val;
+
+	assert(remote);
+
+	if (!proxy_url)
+		return -1;
+
+	*proxy_url = NULL;
+
+	if (git_repository_config__weakptr(&cfg, remote->repo) < 0)
+		return -1;
+
+	/* Go through the possible sources for proxy configuration, from most specific
+	 * to least specific. */
+
+	/* remote.<name>.proxy config setting */
+	if (remote->name && 0 != *(remote->name)) {
+		git_buf buf = GIT_BUF_INIT;
+
+		if (git_buf_printf(&buf, "remote.%s.proxy", remote->name) < 0)
+			return -1;
+
+		if (!git_config_get_string(&val, cfg, git_buf_cstr(&buf)) &&
+			val && ('\0' != *val)) {
+			git_buf_free(&buf);
+
+			*proxy_url = git__strdup(val);
+			GITERR_CHECK_ALLOC(*proxy_url);
+			return 0;
+		}
+
+		git_buf_free(&buf);
+	}
+
+	/* http.proxy config setting */
+	if (!git_config_get_string(&val, cfg, "http.proxy") &&
+		val && ('\0' != *val)) {
+		*proxy_url = git__strdup(val);
+		GITERR_CHECK_ALLOC(*proxy_url);
+		return 0;
+	}
+
+	/* HTTP_PROXY / HTTPS_PROXY environment variables */
+	val = use_ssl ? getenv("HTTPS_PROXY") : getenv("HTTP_PROXY");
+
+	if (val && ('\0' != *val)) {
+		*proxy_url = git__strdup(val);
+		GITERR_CHECK_ALLOC(*proxy_url);
+		return 0;
+	}
+
+	return 0;
+}
+
 int git_remote_download(
 		git_remote *remote,
 		git_transfer_progress_callback progress_cb,
@@ -687,7 +748,7 @@ int git_remote_update_tips(git_remote *remote)
         git_vector_init(&update_heads, 16, NULL) < 0)
 		return -1;
 
-	if (remote->transport->ls(remote->transport, update_tips_callback, &refs) < 0)
+	if (git_remote_ls(remote, update_tips_callback, &refs) < 0)
 		goto on_error;
 
 	/* Let's go find HEAD, if it exists. Check only the first ref in the vector. */
@@ -779,22 +840,20 @@ on_error:
 
 int git_remote_connected(git_remote *remote)
 {
-	int connected;
-
 	assert(remote);
 
 	if (!remote->transport || !remote->transport->is_connected)
 		return 0;
 
 	/* Ask the transport if it's connected. */
-	remote->transport->is_connected(remote->transport, &connected);
-
-	return connected;
+	return remote->transport->is_connected(remote->transport);
 }
 
 void git_remote_stop(git_remote *remote)
 {
-	if (remote->transport->cancel)
+	assert(remote);
+
+	if (remote->transport && remote->transport->cancel)
 		remote->transport->cancel(remote->transport);
 }
 

src/remote.h

@@ -34,5 +34,6 @@ struct git_remote {
 };
 
 const char* git_remote__urlfordirection(struct git_remote *remote, int direction);
+int git_remote__get_http_proxy(git_remote *remote, bool use_ssl, char **proxy_url);
 
 #endif

src/transport.c

@@ -76,15 +76,16 @@ static int transport_find_fn(const char *url, git_transport_cb *callback, void *
  * Public API *
  **************/
 
-int git_transport_dummy(git_transport **transport, void *param)
+int git_transport_dummy(git_transport **transport, git_remote *owner, void *param)
 {
 	GIT_UNUSED(transport);
+	GIT_UNUSED(owner);
 	GIT_UNUSED(param);
 	giterr_set(GITERR_NET, "This transport isn't implemented. Sorry");
 	return -1;
 }
 
-int git_transport_new(git_transport **out, const char *url)
+int git_transport_new(git_transport **out, git_remote *owner, const char *url)
 {
 	git_transport_cb fn;
 	git_transport *transport;
@@ -96,7 +97,7 @@ int git_transport_new(git_transport **out, const char *url)
 		return -1;
 	}
 
-	error = fn(&transport, param);
+	error = fn(&transport, owner, param);
 	if (error < 0)
 		return error;
 

src/transports/git.c

@@ -13,6 +13,7 @@
 
 static const char prefix_git[] = "git://";
 static const char cmd_uploadpack[] = "git-upload-pack";
+static const char cmd_receivepack[] = "git-receive-pack";
 
 typedef struct {
 	git_smart_subtransport_stream parent;
@@ -173,7 +174,7 @@ static int git_stream_alloc(
 	return 0;
 }
 
-static int git_git_uploadpack_ls(
+static int _git_uploadpack_ls(
 	git_subtransport *t,
 	const char *url,
 	git_smart_subtransport_stream **stream)
@@ -211,7 +212,7 @@ on_error:
 	return -1;
 }
 
-static int git_git_uploadpack(
+static int _git_uploadpack(
 	git_subtransport *t,
 	const char *url,
 	git_smart_subtransport_stream **stream)
@@ -227,29 +228,100 @@ static int git_git_uploadpack(
 	return -1;
 }
 
+static int _git_receivepack_ls(
+	git_subtransport *t,
+	const char *url,
+	git_smart_subtransport_stream **stream)
+{
+	char *host, *port;
+	git_stream *s;
+
+	*stream = NULL;
+
+	if (!git__prefixcmp(url, prefix_git))
+		url += strlen(prefix_git);
+
+	if (git_stream_alloc(t, url, cmd_receivepack, stream) < 0)
+		return -1;
+
+	s = (git_stream *)*stream;
+
+	if (gitno_extract_host_and_port(&host, &port, url, GIT_DEFAULT_PORT) < 0)
+		goto on_error;
+
+	if (gitno_connect(&s->socket, host, port, 0) < 0)
+		goto on_error;
+
+	t->current_stream = s;
+	git__free(host);
+	git__free(port);
+	return 0;
+
+on_error:
+	if (*stream)
+		git_stream_free(*stream);
+
+	git__free(host);
+	git__free(port);
+	return -1;
+}
+
+static int _git_receivepack(
+	git_subtransport *t,
+	const char *url,
+	git_smart_subtransport_stream **stream)
+{
+	GIT_UNUSED(url);
+
+	if (t->current_stream) {
+		*stream = &t->current_stream->parent;
+		return 0;
+	}
+
+	giterr_set(GITERR_NET, "Must call RECEIVEPACK_LS before RECEIVEPACK");
+	return -1;
+}
+
 static int _git_action(
 	git_smart_subtransport_stream **stream,
-	git_smart_subtransport *smart_transport,
+	git_smart_subtransport *subtransport,
 	const char *url,
 	git_smart_service_t action)
 {
-	git_subtransport *t = (git_subtransport *) smart_transport;
+	git_subtransport *t = (git_subtransport *) subtransport;
 
 	switch (action) {
 		case GIT_SERVICE_UPLOADPACK_LS:
-			return git_git_uploadpack_ls(t, url, stream);
+			return _git_uploadpack_ls(t, url, stream);
 
 		case GIT_SERVICE_UPLOADPACK:
-			return git_git_uploadpack(t, url, stream);
+			return _git_uploadpack(t, url, stream);
+
+		case GIT_SERVICE_RECEIVEPACK_LS:
+			return _git_receivepack_ls(t, url, stream);
+
+		case GIT_SERVICE_RECEIVEPACK:
+			return _git_receivepack(t, url, stream);
 	}
 
 	*stream = NULL;
 	return -1;
 }
 
-static void _git_free(git_smart_subtransport *smart_transport)
+static int _git_close(git_smart_subtransport *subtransport)
+{
+	git_subtransport *t = (git_subtransport *) subtransport;
+
+	assert(!t->current_stream);
+
+	GIT_UNUSED(t);
+
+	return 0;
+}
+
+static void _git_free(git_smart_subtransport *subtransport)
 {
-	git_subtransport *t = (git_subtransport *) smart_transport;
+	git_subtransport *t = (git_subtransport *) subtransport;
 
 	assert(!t->current_stream);
 
@@ -268,6 +340,7 @@ int git_smart_subtransport_git(git_smart_subtransport **out, git_transport *owne
 
 	t->owner = owner;
 	t->parent.action = _git_action;
+	t->parent.close = _git_close;
 	t->parent.free = _git_free;
 
 	*out = (git_smart_subtransport *) t;

src/transports/local.c

@@ -26,6 +26,7 @@
 
 typedef struct {
 	git_transport parent;
+	git_remote *owner;
 	char *url;
 	int direction;
 	int flags;
@@ -339,13 +340,11 @@ cleanup:
 	return error;
 }
 
-static int local_is_connected(git_transport *transport, int *connected)
+static int local_is_connected(git_transport *transport)
 {
 	transport_local *t = (transport_local *)transport;
 
-	*connected = t->connected;
-
-	return 0;
+	return t->connected;
 }
 
 static int local_read_flags(git_transport *transport, int *flags)
@@ -398,7 +397,7 @@ static void local_free(git_transport *transport)
  * Public API *
  **************/
 
-int git_transport_local(git_transport **out, void *param)
+int git_transport_local(git_transport **out, git_remote *owner, void *param)
 {
 	transport_local *t;
 
@@ -419,6 +418,8 @@ int git_transport_local(git_transport **out, void *param)
 	t->parent.read_flags = local_read_flags;
 	t->parent.cancel = local_cancel;
 
+	t->owner = owner;
+
 	*out = (git_transport *) t;
 
 	return 0;

src/transports/smart.c

@@ -29,12 +29,18 @@ static int git_smart__recv_cb(gitno_buffer *buf)
 	return (int)(buf->offset - old_len);
 }
 
-GIT_INLINE(void) git_smart__reset_stream(transport_smart *t)
+GIT_INLINE(int) git_smart__reset_stream(transport_smart *t, bool close_subtransport)
 {
 	if (t->current_stream) {
 		t->current_stream->free(t->current_stream);
 		t->current_stream = NULL;
 	}
+
+	if (close_subtransport &&
+		t->wrapped->close(t->wrapped) < 0)
+		return -1;
+
+	return 0;
 }
 
 static int git_smart__set_callbacks(
@@ -63,8 +69,11 @@ static int git_smart__connect(
 	git_smart_subtransport_stream *stream;
 	int error;
 	git_pkt *pkt;
+	git_pkt_ref *first;
+	git_smart_service_t service;
 
-	git_smart__reset_stream(t);
+	if (git_smart__reset_stream(t, true) < 0)
+		return -1;
 
 	t->url = git__strdup(url);
 	GITERR_CHECK_ALLOC(t->url);
@@ -73,55 +82,64 @@ static int git_smart__connect(
 	t->flags = flags;
 	t->cred_acquire_cb = cred_acquire_cb;
 
-	if (GIT_DIRECTION_FETCH == direction)
-	{
-		if ((error = t->wrapped->action(&stream, t->wrapped, t->url, GIT_SERVICE_UPLOADPACK_LS)) < 0)
-			return error;
-		
-		/* Save off the current stream (i.e. socket) that we are working with */
-		t->current_stream = stream;
-
-		gitno_buffer_setup_callback(NULL, &t->buffer, t->buffer_data, sizeof(t->buffer_data), git_smart__recv_cb, t);
-
-		/* 2 flushes for RPC; 1 for stateful */
-		if ((error = git_smart__store_refs(t, t->rpc ? 2 : 1)) < 0)
-			return error;
-
-		/* Strip the comment packet for RPC */
-		if (t->rpc) {
-			pkt = (git_pkt *)git_vector_get(&t->refs, 0);
-
-			if (!pkt || GIT_PKT_COMMENT != pkt->type) {
-				giterr_set(GITERR_NET, "Invalid response");
-				return -1;
-			} else {
-				/* Remove the comment pkt from the list */
-				git_vector_remove(&t->refs, 0);
-				git__free(pkt);
-			}
-		}
+	if (GIT_DIRECTION_FETCH == t->direction)
+		service = GIT_SERVICE_UPLOADPACK_LS;
+	else if (GIT_DIRECTION_PUSH == t->direction)
+		service = GIT_SERVICE_RECEIVEPACK_LS;
+	else {
+		giterr_set(GITERR_NET, "Invalid direction");
+		return -1;
+	}
 
-		/* We now have loaded the refs. */
-		t->have_refs = 1;
+	if ((error = t->wrapped->action(&stream, t->wrapped, t->url, service)) < 0)
+		return error;
 
-		if (git_smart__detect_caps((git_pkt_ref *)git_vector_get(&t->refs, 0), &t->caps) < 0)
-			return -1;
+	/* Save off the current stream (i.e. socket) that we are working with */
+	t->current_stream = stream;
 
-		if (t->rpc)
-			git_smart__reset_stream(t);
+	gitno_buffer_setup_callback(NULL, &t->buffer, t->buffer_data, sizeof(t->buffer_data), git_smart__recv_cb, t);
 
-		/* We're now logically connected. */
-		t->connected = 1;
+	/* 2 flushes for RPC; 1 for stateful */
+	if ((error = git_smart__store_refs(t, t->rpc ? 2 : 1)) < 0)
+		return error;
+
+	/* Strip the comment packet for RPC */
+	if (t->rpc) {
+		pkt = (git_pkt *)git_vector_get(&t->refs, 0);
 
-		return 0;
+		if (!pkt || GIT_PKT_COMMENT != pkt->type) {
+			giterr_set(GITERR_NET, "Invalid response");
+			return -1;
+		} else {
+			/* Remove the comment pkt from the list */
+			git_vector_remove(&t->refs, 0);
+			git__free(pkt);
+		}
 	}
-	else
-	{
-		giterr_set(GITERR_NET, "Push not implemented");
+
+	/* We now have loaded the refs. */
+	t->have_refs = 1;
+
+	first = (git_pkt_ref *)git_vector_get(&t->refs, 0);
+
+	/* Detect capabilities */
+	if (git_smart__detect_caps(first, &t->caps) < 0)
 		return -1;
+
+	/* If the only ref in the list is capabilities^{} with OID_ZERO, remove it */
+	if (1 == t->refs.length && !strcmp(first->head.name, "capabilities^{}") &&
+		git_oid_iszero(&first->head.oid)) {
+		git_vector_clear(&t->refs);
+		git_pkt_free((git_pkt *)first);
 	}
 
-	return -1;
+	if (t->rpc && git_smart__reset_stream(t, false) < 0)
+		return -1;
+
+	/* We're now logically connected. */
+	t->connected = 1;
+
+	return 0;
 }
 
 static int git_smart__ls(git_transport *transport, git_headlist_cb list_cb, void *payload)
@@ -156,29 +174,55 @@ int git_smart__negotiation_step(git_transport *transport, void *data, size_t len
 	git_smart_subtransport_stream *stream;
 	int error;
 
-	if (t->rpc)
-		git_smart__reset_stream(t);
+	if (t->rpc && git_smart__reset_stream(t, false) < 0)
+		return -1;
+
+	if (GIT_DIRECTION_FETCH != t->direction) {
+		giterr_set(GITERR_NET, "This operation is only valid for fetch");
+		return -1;
+	}
+
+	if ((error = t->wrapped->action(&stream, t->wrapped, t->url, GIT_SERVICE_UPLOADPACK)) < 0)
+		return error;
+
+	/* If this is a stateful implementation, the stream we get back should be the same */
+	assert(t->rpc || t->current_stream == stream);
 
-	if (GIT_DIRECTION_FETCH == t->direction) {
-		if ((error = t->wrapped->action(&stream, t->wrapped, t->url, GIT_SERVICE_UPLOADPACK)) < 0)
-			return error;
+	/* Save off the current stream (i.e. socket) that we are working with */
+	t->current_stream = stream;
 
-		/* If this is a stateful implementation, the stream we get back should be the same */
-		assert(t->rpc || t->current_stream == stream);
+	if ((error = stream->write(stream, (const char *)data, len)) < 0)
+		return error;
 
-		/* Save off the current stream (i.e. socket) that we are working with */
-		t->current_stream = stream;
+	gitno_buffer_setup_callback(NULL, &t->buffer, t->buffer_data, sizeof(t->buffer_data), git_smart__recv_cb, t);
 
-		if ((error = stream->write(stream, (const char *)data, len)) < 0)
-			return error;
+	return 0;
+}
 
-		gitno_buffer_setup_callback(NULL, &t->buffer, t->buffer_data, sizeof(t->buffer_data), git_smart__recv_cb, t);
+int git_smart__get_push_stream(transport_smart *t, git_smart_subtransport_stream **stream)
+{
+	int error;
+
+	if (t->rpc && git_smart__reset_stream(t, false) < 0)
+		return -1;
 
-		return 0;
+	if (GIT_DIRECTION_PUSH != t->direction) {
+		giterr_set(GITERR_NET, "This operation is only valid for push");
+		return -1;
 	}
 
-	giterr_set(GITERR_NET, "Push not implemented");
-	return -1;
+	if ((error = t->wrapped->action(stream, t->wrapped, t->url, GIT_SERVICE_RECEIVEPACK)) < 0)
+		return error;
+
+	/* If this is a stateful implementation, the stream we get back should be the same */
+	assert(t->rpc || t->current_stream == *stream);
+
+	/* Save off the current stream (i.e. socket) that we are working with */
+	t->current_stream = *stream;
+
+	gitno_buffer_setup_callback(NULL, &t->buffer, t->buffer_data, sizeof(t->buffer_data), git_smart__recv_cb, t);
+
+	return 0;
 }
 
 static void git_smart__cancel(git_transport *transport)
@@ -188,13 +232,11 @@ static void git_smart__cancel(git_transport *transport)
 	git_atomic_set(&t->cancelled, 1);
 }
 
-static int git_smart__is_connected(git_transport *transport, int *connected)
+static int git_smart__is_connected(git_transport *transport)
 {
 	transport_smart *t = (transport_smart *)transport;
 
-	*connected = t->connected;
-
-	return 0;
+	return t->connected;
 }
 
 static int git_smart__read_flags(git_transport *transport, int *flags)
@@ -209,21 +251,37 @@ static int git_smart__read_flags(git_transport *transport, int *flags)
 static int git_smart__close(git_transport *transport)
 {
 	transport_smart *t = (transport_smart *)transport;
-	
-	git_smart__reset_stream(t);
+	git_vector *refs = &t->refs;
+	git_vector *common = &t->common;
+	unsigned int i;
+	git_pkt *p;
+	int ret;
+
+	ret = git_smart__reset_stream(t, true);
+
+	git_vector_foreach(refs, i, p)
+		git_pkt_free(p);
+
+	git_vector_free(refs);
+
+	git_vector_foreach(common, i, p)
+		git_pkt_free(p);
+
+	git_vector_free(common);
+
+	if (t->url) {
+		git__free(t->url);
+		t->url = NULL;
+	}
 
 	t->connected = 0;
 
-	return 0;
+	return ret;
 }
 
 static void git_smart__free(git_transport *transport)
 {
 	transport_smart *t = (transport_smart *)transport;
-	git_vector *refs = &t->refs;
-	git_vector *common = &t->common;
-	unsigned int i;
-	git_pkt *p;
 
 	/* Make sure that the current stream is closed, if we have one. */
 	git_smart__close(transport);
@@ -231,21 +289,10 @@ static void git_smart__free(git_transport *transport)
 	/* Free the subtransport */
 	t->wrapped->free(t->wrapped);
 
-	git_vector_foreach(refs, i, p) {
-		git_pkt_free(p);
-	}
-	git_vector_free(refs);
-
-	git_vector_foreach(common, i, p) {
-		git_pkt_free(p);
-	}
-	git_vector_free(common);
-
-	git__free(t->url);
 	git__free(t);
 }
 
-int git_transport_smart(git_transport **out, void *param)
+int git_transport_smart(git_transport **out, git_remote *owner, void *param)
 {
 	transport_smart *t;
 	git_smart_subtransport_definition *definition = (git_smart_subtransport_definition *)param;
@@ -262,11 +309,13 @@ int git_transport_smart(git_transport **out, void *param)
 	t->parent.free = git_smart__free;
 	t->parent.negotiate_fetch = git_smart__negotiate_fetch;
 	t->parent.download_pack = git_smart__download_pack;
+	t->parent.push = git_smart__push;
 	t->parent.ls = git_smart__ls;
 	t->parent.is_connected = git_smart__is_connected;
 	t->parent.read_flags = git_smart__read_flags;
 	t->parent.cancel = git_smart__cancel;
 	
+	t->owner = owner;
 	t->rpc = definition->rpc;
 
 	if (git_vector_init(&t->refs, 16, NULL) < 0) {

src/transports/smart.h

@@ -8,6 +8,7 @@
 #include "vector.h"
 #include "netops.h"
 #include "buffer.h"
+#include "push.h"
 
 #define GIT_SIDE_BAND_DATA     1
 #define GIT_SIDE_BAND_PROGRESS 2
@@ -18,6 +19,8 @@
 #define GIT_CAP_SIDE_BAND "side-band"
 #define GIT_CAP_SIDE_BAND_64K "side-band-64k"
 #define GIT_CAP_INCLUDE_TAG "include-tag"
+#define GIT_CAP_DELETE_REFS "delete-refs"
+#define GIT_CAP_REPORT_STATUS "report-status"
 
 enum git_pkt_type {
 	GIT_PKT_CMD,
@@ -31,6 +34,9 @@ enum git_pkt_type {
 	GIT_PKT_ERR,
 	GIT_PKT_DATA,
 	GIT_PKT_PROGRESS,
+	GIT_PKT_OK,
+	GIT_PKT_NG,
+	GIT_PKT_UNPACK,
 };
 
 /* Used for multi-ack */
@@ -85,19 +91,38 @@ typedef struct {
 	char error[GIT_FLEX_ARRAY];
 } git_pkt_err;
 
+typedef struct {
+	enum git_pkt_type type;
+	char *ref;
+} git_pkt_ok;
+
+typedef struct {
+	enum git_pkt_type type;
+	char *ref;
+	char *msg;
+} git_pkt_ng;
+
+typedef struct {
+	enum git_pkt_type type;
+	int unpack_ok;
+} git_pkt_unpack;
+
 typedef struct transport_smart_caps {
 	int common:1,
 		ofs_delta:1,
 		multi_ack: 1,
 		side_band:1,
 		side_band_64k:1,
-		include_tag:1;
+		include_tag:1,
+		delete_refs:1,
+		report_status:1;
 } transport_smart_caps;
 
 typedef void (*packetsize_cb)(size_t received, void *payload);
 
 typedef struct {
 	git_transport parent;
+	git_remote *owner;
 	char *url;
 	git_cred_acquire_cb cred_acquire_cb;
 	int direction;
@@ -123,6 +148,7 @@ typedef struct {
 /* smart_protocol.c */
 int git_smart__store_refs(transport_smart *t, int flushes);
 int git_smart__detect_caps(git_pkt_ref *pkt, transport_smart_caps *caps);
+int git_smart__push(git_transport *transport, git_push *push);
 
 int git_smart__negotiate_fetch(
 	git_transport *transport,
@@ -139,6 +165,7 @@ int git_smart__download_pack(
 
 /* smart.c */
 int git_smart__negotiation_step(git_transport *transport, void *data, size_t len);
+int git_smart__get_push_stream(transport_smart *t, git_smart_subtransport_stream **out);
 
 /* smart_pkt.c */
 int git_pkt_parse_line(git_pkt **head, const char *line, const char **out, size_t len);

src/transports/smart_pkt.c

@@ -30,7 +30,7 @@ static int flush_pkt(git_pkt **out)
 {
 	git_pkt *pkt;
 
-	pkt = git__malloc(sizeof(git_pkt));
+	pkt = (git_pkt *) git__malloc(sizeof(git_pkt));
 	GITERR_CHECK_ALLOC(pkt);
 
 	pkt->type = GIT_PKT_FLUSH;
@@ -46,7 +46,7 @@ static int ack_pkt(git_pkt **out, const char *line, size_t len)
 	GIT_UNUSED(line);
 	GIT_UNUSED(len);
 
-	pkt = git__calloc(1, sizeof(git_pkt_ack));
+	pkt = (git_pkt_ack *) git__calloc(1, sizeof(git_pkt_ack));
 	GITERR_CHECK_ALLOC(pkt);
 
 	pkt->type = GIT_PKT_ACK;
@@ -73,7 +73,7 @@ static int nak_pkt(git_pkt **out)
 {
 	git_pkt *pkt;
 
-	pkt = git__malloc(sizeof(git_pkt));
+	pkt = (git_pkt *) git__malloc(sizeof(git_pkt));
 	GITERR_CHECK_ALLOC(pkt);
 
 	pkt->type = GIT_PKT_NAK;
@@ -86,7 +86,7 @@ static int pack_pkt(git_pkt **out)
 {
 	git_pkt *pkt;
 
-	pkt = git__malloc(sizeof(git_pkt));
+	pkt = (git_pkt *) git__malloc(sizeof(git_pkt));
 	GITERR_CHECK_ALLOC(pkt);
 
 	pkt->type = GIT_PKT_PACK;
@@ -99,7 +99,7 @@ static int comment_pkt(git_pkt **out, const char *line, size_t len)
 {
 	git_pkt_comment *pkt;
 
-	pkt = git__malloc(sizeof(git_pkt_comment) + len + 1);
+	pkt = (git_pkt_comment *) git__malloc(sizeof(git_pkt_comment) + len + 1);
 	GITERR_CHECK_ALLOC(pkt);
 
 	pkt->type = GIT_PKT_COMMENT;
@@ -118,7 +118,7 @@ static int err_pkt(git_pkt **out, const char *line, size_t len)
 	/* Remove "ERR " from the line */
 	line += 4;
 	len -= 4;
-	pkt = git__malloc(sizeof(git_pkt_err) + len + 1);
+	pkt = (git_pkt_err *) git__malloc(sizeof(git_pkt_err) + len + 1);
 	GITERR_CHECK_ALLOC(pkt);
 
 	pkt->type = GIT_PKT_ERR;
@@ -136,7 +136,7 @@ static int data_pkt(git_pkt **out, const char *line, size_t len)
 
 	line++;
 	len--;
-	pkt = git__malloc(sizeof(git_pkt_data) + len);
+	pkt = (git_pkt_data *) git__malloc(sizeof(git_pkt_data) + len);
 	GITERR_CHECK_ALLOC(pkt);
 
 	pkt->type = GIT_PKT_DATA;
@@ -154,7 +154,7 @@ static int progress_pkt(git_pkt **out, const char *line, size_t len)
 
 	line++;
 	len--;
-	pkt = git__malloc(sizeof(git_pkt_progress) + len);
+	pkt = (git_pkt_progress *) git__malloc(sizeof(git_pkt_progress) + len);
 	GITERR_CHECK_ALLOC(pkt);
 
 	pkt->type = GIT_PKT_PROGRESS;
@@ -174,7 +174,7 @@ static int ref_pkt(git_pkt **out, const char *line, size_t len)
 	int error;
 	git_pkt_ref *pkt;
 
-	pkt = git__malloc(sizeof(git_pkt_ref));
+	pkt = (git_pkt_ref *) git__malloc(sizeof(git_pkt_ref));
 	GITERR_CHECK_ALLOC(pkt);
 
 	memset(pkt, 0x0, sizeof(git_pkt_ref));
@@ -196,7 +196,7 @@ static int ref_pkt(git_pkt **out, const char *line, size_t len)
 	if (line[len - 1] == '\n')
 		--len;
 
-	pkt->head.name = git__malloc(len + 1);
+	pkt->head.name = (char *) git__malloc(len + 1);
 	GITERR_CHECK_ALLOC(pkt->head.name);
 
 	memcpy(pkt->head.name, line, len);
@@ -214,6 +214,83 @@ error_out:
 	return error;
 }
 
+static int ok_pkt(git_pkt **out, const char *line, size_t len)
+{
+	git_pkt_ok *pkt;
+	const char *ptr;
+
+	pkt = (git_pkt_ok *) git__malloc(sizeof(*pkt));
+	GITERR_CHECK_ALLOC(pkt);
+
+	pkt->type = GIT_PKT_OK;
+
+	line += 3; /* skip "ok " */
+	ptr = strchr(line, '\n');
+	len = ptr - line;
+
+	pkt->ref = (char *) git__malloc(len + 1);
+	GITERR_CHECK_ALLOC(pkt->ref);
+
+	memcpy(pkt->ref, line, len);
+	pkt->ref[len] = '\0';
+
+	*out = (git_pkt *)pkt;
+	return 0;
+}
+
+static int ng_pkt(git_pkt **out, const char *line, size_t len)
+{
+	git_pkt_ng *pkt;
+	const char *ptr;
+
+	pkt = (git_pkt_ng *) git__malloc(sizeof(*pkt));
+	GITERR_CHECK_ALLOC(pkt);
+
+	pkt->type = GIT_PKT_NG;
+
+	line += 3; /* skip "ng " */
+	ptr = strchr(line, ' ');
+	len = ptr - line;
+
+	pkt->ref = (char *) git__malloc(len + 1);
+	GITERR_CHECK_ALLOC(pkt->ref);
+
+	memcpy(pkt->ref, line, len);
+	pkt->ref[len] = '\0';
+
+	line = ptr + 1;
+	ptr = strchr(line, '\n');
+	len = ptr - line;
+
+	pkt->msg = (char *) git__malloc(len + 1);
+	GITERR_CHECK_ALLOC(pkt->msg);
+
+	memcpy(pkt->msg, line, len);
+	pkt->msg[len] = '\0';
+
+	*out = (git_pkt *)pkt;
+	return 0;
+}
+
+static int unpack_pkt(git_pkt **out, const char *line, size_t len)
+{
+	git_pkt_unpack *pkt;
+
+	GIT_UNUSED(len);
+
+	pkt = (git_pkt_unpack *) git__malloc(sizeof(*pkt));
+	GITERR_CHECK_ALLOC(pkt);
+
+	pkt->type = GIT_PKT_UNPACK;
+	if (!git__prefixcmp(line, "unpack ok"))
+		pkt->unpack_ok = 1;
+	else
+		pkt->unpack_ok = 0;
+
+	*out = (git_pkt *)pkt;
+	return 0;
+}
+
 static int32_t parse_len(const char *line)
 {
 	char num[PKT_LEN_SIZE + 1];
@@ -311,6 +388,12 @@ int git_pkt_parse_line(
 		ret = err_pkt(head, line, len);
 	else if (*line == '#')
 		ret = comment_pkt(head, line, len);
+	else if (!git__prefixcmp(line, "ok"))
+		ret = ok_pkt(head, line, len);
+	else if (!git__prefixcmp(line, "ng"))
+		ret = ng_pkt(head, line, len);
+	else if (!git__prefixcmp(line, "unpack"))
+		ret = unpack_pkt(head, line, len);
 	else
 		ret = ref_pkt(head, line, len);
 
@@ -326,6 +409,17 @@ void git_pkt_free(git_pkt *pkt)
 		git__free(p->head.name);
 	}
 
+	if (pkt->type == GIT_PKT_OK) {
+		git_pkt_ok *p = (git_pkt_ok *) pkt;
+		git__free(p->ref);
+	}
+
+	if (pkt->type == GIT_PKT_NG) {
+		git_pkt_ng *p = (git_pkt_ng *) pkt;
+		git__free(p->ref);
+		git__free(p->msg);
+	}
+
 	git__free(pkt);
 }
 

src/transports/smart_protocol.c

@@ -4,9 +4,14 @@
  * This file is part of libgit2, distributed under the GNU GPL v2 with
  * a Linking Exception. For full terms see the included COPYING file.
  */
+#include "git2.h"
+
 #include "smart.h"
 #include "refs.h"
 #include "repository.h"
+#include "push.h"
+#include "pack-objects.h"
+#include "remote.h"
 
 #define NETWORK_XFER_THRESHOLD (100*1024)
 
@@ -18,6 +23,11 @@ int git_smart__store_refs(transport_smart *t, int flushes)
 	const char *line_end;
 	git_pkt *pkt;
 
+	/* Clear existing refs in case git_remote_connect() is called again
+	 * after git_remote_disconnect().
+	 */
+	git_vector_clear(refs);
+
 	do {
 		if (buf->offset > 0)
 			error = git_pkt_parse_line(&pkt, buf->data, &line_end, buf->offset);
@@ -71,37 +81,43 @@ int git_smart__detect_caps(git_pkt_ref *pkt, transport_smart_caps *caps)
 		if (*ptr == ' ')
 			ptr++;
 
-		if(!git__prefixcmp(ptr, GIT_CAP_OFS_DELTA)) {
+		if (!git__prefixcmp(ptr, GIT_CAP_OFS_DELTA)) {
 			caps->common = caps->ofs_delta = 1;
 			ptr += strlen(GIT_CAP_OFS_DELTA);
 			continue;
 		}
 
-		if(!git__prefixcmp(ptr, GIT_CAP_MULTI_ACK)) {
+		if (!git__prefixcmp(ptr, GIT_CAP_MULTI_ACK)) {
 			caps->common = caps->multi_ack = 1;
 			ptr += strlen(GIT_CAP_MULTI_ACK);
 			continue;
 		}
 
-		if(!git__prefixcmp(ptr, GIT_CAP_INCLUDE_TAG)) {
+		if (!git__prefixcmp(ptr, GIT_CAP_INCLUDE_TAG)) {
 			caps->common = caps->include_tag = 1;
 			ptr += strlen(GIT_CAP_INCLUDE_TAG);
 			continue;
 		}
 
 		/* Keep side-band check after side-band-64k */
-		if(!git__prefixcmp(ptr, GIT_CAP_SIDE_BAND_64K)) {
+		if (!git__prefixcmp(ptr, GIT_CAP_SIDE_BAND_64K)) {
 			caps->common = caps->side_band_64k = 1;
 			ptr += strlen(GIT_CAP_SIDE_BAND_64K);
 			continue;
 		}
 
-		if(!git__prefixcmp(ptr, GIT_CAP_SIDE_BAND)) {
+		if (!git__prefixcmp(ptr, GIT_CAP_SIDE_BAND)) {
 			caps->common = caps->side_band = 1;
 			ptr += strlen(GIT_CAP_SIDE_BAND);
 			continue;
 		}
 
+		if (!git__prefixcmp(ptr, GIT_CAP_DELETE_REFS)) {
+			caps->common = caps->delete_refs = 1;
+			ptr += strlen(GIT_CAP_DELETE_REFS);
+			continue;
+		}
+
 		/* We don't know this capability, so skip it */
 		ptr = strchr(ptr, ' ');
 	}
@@ -471,7 +487,8 @@ on_success:
 	error = 0;
 
 on_error:
-	writepack->free(writepack);
+	if (writepack)
+		writepack->free(writepack);
 
 	/* Trailing execution of progress_cb, if necessary */
 	if (npp.callback && npp.stats->received_bytes > npp.last_fired_bytes)
@@ -479,3 +496,218 @@ on_error:
 
 	return error;
 }
+
+static int gen_pktline(git_buf *buf, git_push *push)
+{
+	git_remote_head *head;
+	push_spec *spec;
+	unsigned int i, j, len;
+	char hex[41]; hex[40] = '\0';
+
+	git_vector_foreach(&push->specs, i, spec) {
+		len = 2*GIT_OID_HEXSZ + 7;
+
+		if (i == 0) {
+			len +=1; /* '\0' */
+			if (push->report_status)
+				len += strlen(GIT_CAP_REPORT_STATUS);
+		}
+
+		if (spec->lref) {
+			len += spec->rref ? strlen(spec->rref) : strlen(spec->lref);
+
+			if (git_oid_iszero(&spec->roid)) {
+
+				/*
+				 * Create remote reference
+				 */
+				git_oid_fmt(hex, &spec->loid);
+				git_buf_printf(buf, "%04x%s %s %s", len,
+					GIT_OID_HEX_ZERO, hex,
+					spec->rref ? spec->rref : spec->lref);
+
+			} else {
+
+				/*
+				 * Update remote reference
+				 */
+				git_oid_fmt(hex, &spec->roid);
+				git_buf_printf(buf, "%04x%s ", len, hex);
+
+				git_oid_fmt(hex, &spec->loid);
+				git_buf_printf(buf, "%s %s", hex,
+					spec->rref ? spec->rref : spec->lref);
+			}
+		} else {
+			/*
+			 * Delete remote reference
+			 */
+			git_vector_foreach(&push->remote->refs, j, head) {
+				if (!strcmp(spec->rref, head->name)) {
+					len += strlen(spec->rref);
+
+					git_oid_fmt(hex, &head->oid);
+					git_buf_printf(buf, "%04x%s %s %s", len,
+						       hex, GIT_OID_HEX_ZERO, head->name);
+
+					break;
+				}
+			}
+		}
+
+		if (i == 0) {
+			git_buf_putc(buf, '\0');
+			if (push->report_status)
+				git_buf_printf(buf, GIT_CAP_REPORT_STATUS);
+		}
+
+		git_buf_putc(buf, '\n');
+	}
+	git_buf_puts(buf, "0000");
+	return git_buf_oom(buf) ? -1 : 0;
+}
+
+static int parse_report(gitno_buffer *buf, git_push *push)
+{
+	git_pkt *pkt;
+	const char *line_end;
+	int error, recvd;
+
+	for (;;) {
+		if (buf->offset > 0)
+			error = git_pkt_parse_line(&pkt, buf->data,
+						   &line_end, buf->offset);
+		else
+			error = GIT_EBUFS;
+
+		if (error < 0 && error != GIT_EBUFS)
+			return -1;
+
+		if (error == GIT_EBUFS) {
+			if ((recvd = gitno_recv(buf)) < 0)
+				return -1;
+
+			if (recvd == 0) {
+				giterr_set(GITERR_NET, "Early EOF");
+				return -1;
+			}
+			continue;
+		}
+
+		gitno_consume(buf, line_end);
+
+		if (pkt->type == GIT_PKT_OK) {
+			push_status *status = (push_status *) git__malloc(sizeof(push_status));
+			GITERR_CHECK_ALLOC(status);
+			status->ref = git__strdup(((git_pkt_ok *)pkt)->ref);
+			status->msg = NULL;
+			git_pkt_free(pkt);
+			if (git_vector_insert(&push->status, status) < 0) {
+				git__free(status);
+				return -1;
+			}
+			continue;
+		}
+
+		if (pkt->type == GIT_PKT_NG) {
+			push_status *status = (push_status *) git__malloc(sizeof(push_status));
+			GITERR_CHECK_ALLOC(status);
+			status->ref = git__strdup(((git_pkt_ng *)pkt)->ref);
+			status->msg = git__strdup(((git_pkt_ng *)pkt)->msg);
+			git_pkt_free(pkt);
+			if (git_vector_insert(&push->status, status) < 0) {
+				git__free(status);
+				return -1;
+			}
+			continue;
+		}
+
+		if (pkt->type == GIT_PKT_UNPACK) {
+			push->unpack_ok = ((git_pkt_unpack *)pkt)->unpack_ok;
+			git_pkt_free(pkt);
+			continue;
+		}
+
+		if (pkt->type == GIT_PKT_FLUSH) {
+			git_pkt_free(pkt);
+			return 0;
+		}
+
+		git_pkt_free(pkt);
+		giterr_set(GITERR_NET, "report-status: protocol error");
+		return -1;
+	}
+}
+
+static int stream_thunk(void *buf, size_t size, void *data)
+{
+	git_smart_subtransport_stream *s = (git_smart_subtransport_stream *)data;
+
+	return s->write(s, (const char *)buf, size);
+}
+
+int git_smart__push(git_transport *transport, git_push *push)
+{
+	transport_smart *t = (transport_smart *)transport;
+	git_smart_subtransport_stream *s;
+	git_buf pktline = GIT_BUF_INIT;
+	char *url = NULL;
+	int error = -1;
+
+#ifdef PUSH_DEBUG
+{
+	git_remote_head *head;
+	push_spec *spec;
+	unsigned int i;
+	char hex[41]; hex[40] = '\0';
+
+	git_vector_foreach(&push->remote->refs, i, head) {
+		git_oid_fmt(hex, &head->oid);
+		fprintf(stderr, "%s (%s)\n", hex, head->name);
+	}
+
+	git_vector_foreach(&push->specs, i, spec) {
+		git_oid_fmt(hex, &spec->roid);
+		fprintf(stderr, "%s (%s) -> ", hex, spec->lref);
+		git_oid_fmt(hex, &spec->loid);
+		fprintf(stderr, "%s (%s)\n", hex, spec->rref ?
+			spec->rref : spec->lref);
+	}
+}
+#endif
+
+	if (git_smart__get_push_stream(t, &s) < 0 ||
+		gen_pktline(&pktline, push) < 0 ||
+		s->write(s, git_buf_cstr(&pktline), git_buf_len(&pktline)) < 0 ||
+		git_packbuilder_foreach(push->pb, &stream_thunk, s) < 0)
+		goto on_error;
+
+	/* If we sent nothing or the server doesn't support report-status, then
+	 * we consider the pack to have been unpacked successfully */
+	if (!push->specs.length || !push->report_status)
+		push->unpack_ok = 1;
+	else if (parse_report(&t->buffer, push) < 0)
+		goto on_error;
+
+	/* If we updated at least one ref, then we need to re-acquire the list of 
+	 * refs so the caller can call git_remote_update_tips afterward. TODO: Use
+	 * the data from the push report to do this without another network call */
+	if (push->specs.length) {
+		git_cred_acquire_cb cred_cb = t->cred_acquire_cb;
+		int flags = t->flags;
+
+		url = git__strdup(t->url);
+
+		if (!url || t->parent.close(&t->parent) < 0 ||
+			t->parent.connect(&t->parent, url, cred_cb, GIT_DIRECTION_PUSH, flags))
+			goto on_error;
+	}
+
+	error = 0;
+
+on_error:
+	git__free(url);
+	git_buf_free(&pktline);
+
+	return error;
+}

tests-clar/network/fetch.c

@@ -48,8 +48,8 @@ static void do_fetch(const char *url, int flag, int n)
 	git_remote_set_autotag(remote, flag);
 	cl_git_pass(git_remote_connect(remote, GIT_DIRECTION_FETCH));
 	cl_git_pass(git_remote_download(remote, progress, &bytes_received));
-	git_remote_disconnect(remote);
 	cl_git_pass(git_remote_update_tips(remote));
+	git_remote_disconnect(remote);
 	cl_assert_equal_i(counter, n);
 	cl_assert(bytes_received > 0);
 

tests-clar/network/push_util.c

+
+#include "clar_libgit2.h"
+#include "buffer.h"
+#include "vector.h"
+#include "push_util.h"
+
+const git_oid OID_ZERO = {{ 0 }};
+
+void updated_tip_free(updated_tip *t)
+{
+	git__free(t->name);
+	git__free(t->old_oid);
+	git__free(t->new_oid);
+	git__free(t);
+}
+
+void record_callbacks_data_clear(record_callbacks_data *data)
+{
+	size_t i;
+	updated_tip *tip;
+
+	git_vector_foreach(&data->updated_tips, i, tip)
+		updated_tip_free(tip);
+
+	git_vector_free(&data->updated_tips);
+}
+
+int record_update_tips_cb(const char *refname, const git_oid *a, const git_oid *b, void *data)
+{
+	updated_tip *t;
+	record_callbacks_data *record_data = (record_callbacks_data *)data;
+
+	cl_assert(t = git__malloc(sizeof(*t)));
+
+	cl_assert(t->name = git__strdup(refname));
+	cl_assert(t->old_oid = git__malloc(sizeof(*t->old_oid)));
+	git_oid_cpy(t->old_oid, a);
+
+	cl_assert(t->new_oid = git__malloc(sizeof(*t->new_oid)));
+	git_oid_cpy(t->new_oid, b);
+
+	git_vector_insert(&record_data->updated_tips, t);
+
+	return 0;
+}
+
+int delete_ref_cb(git_remote_head *head, void *payload)
+{
+	git_vector *delete_specs = (git_vector *)payload;
+	git_buf del_spec = GIT_BUF_INIT;
+
+	/* Ignore malformed ref names (which also saves us from tag^{} */
+	if (!git_reference_is_valid_name(head->name))
+		return 0;
+
+	/* Create a refspec that deletes a branch in the remote */
+	if (strcmp(head->name, "refs/heads/master")) {
+		cl_git_pass(git_buf_putc(&del_spec, ':'));
+		cl_git_pass(git_buf_puts(&del_spec, head->name));
+		cl_git_pass(git_vector_insert(delete_specs, git_buf_detach(&del_spec)));
+	}
+
+	return 0;
+}
+
+int record_ref_cb(git_remote_head *head, void *payload)
+{
+	git_vector *refs = (git_vector *) payload;
+	return git_vector_insert(refs, head);
+}
+
+void verify_remote_refs(git_vector *actual_refs, const expected_ref expected_refs[], size_t expected_refs_len)
+{
+	size_t i, j = 0;
+	git_buf msg = GIT_BUF_INIT;
+	git_remote_head *actual;
+	char *oid_str;
+	bool master_present = false;
+
+	/* We don't care whether "master" is present on the other end or not */
+	git_vector_foreach(actual_refs, i, actual) {
+		if (!strcmp(actual->name, "refs/heads/master")) {
+			master_present = true;
+			break;
+		}
+	}
+
+	if (expected_refs_len + (master_present ? 1 : 0) != actual_refs->length)
+		goto failed;
+
+	git_vector_foreach(actual_refs, i, actual) {
+		if (master_present && !strcmp(actual->name, "refs/heads/master"))
+			continue;
+
+		if (strcmp(expected_refs[j].name, actual->name) ||
+			git_oid_cmp(expected_refs[j].oid, &actual->oid))
+			goto failed;
+
+		j++;
+	}
+
+	return;
+
+failed:
+	git_buf_puts(&msg, "Expected and actual refs differ:\nEXPECTED:\n");
+
+	for(i = 0; i < expected_refs_len; i++) {
+		cl_assert(oid_str = git_oid_allocfmt(expected_refs[i].oid));
+		cl_git_pass(git_buf_printf(&msg, "%s = %s\n", expected_refs[i].name, oid_str));
+		git__free(oid_str);
+	}
+
+	git_buf_puts(&msg, "\nACTUAL:\n");
+	git_vector_foreach(actual_refs, i, actual) {
+		if (master_present && !strcmp(actual->name, "refs/heads/master"))
+			continue;
+
+		cl_assert(oid_str = git_oid_allocfmt(&actual->oid));
+		cl_git_pass(git_buf_printf(&msg, "%s = %s\n", actual->name, oid_str));
+		git__free(oid_str);
+	}
+
+	cl_fail(git_buf_cstr(&msg));
+
+	git_buf_free(&msg);
+}

tests-clar/network/push_util.h

+#ifndef INCLUDE_cl_push_util_h__
+#define INCLUDE_cl_push_util_h__
+
+#include "git2/oid.h"
+
+/* Constant for zero oid */
+extern const git_oid OID_ZERO;
+
+/**
+ * Macro for initializing git_remote_callbacks to use test helpers that
+ * record data in a record_callbacks_data instance.
+ * @param data pointer to a record_callbacks_data instance
+ */
+#define RECORD_CALLBACKS_INIT(data) { NULL, NULL, record_update_tips_cb, data }
+
+typedef struct {
+	char *name;
+	git_oid *old_oid;
+	git_oid *new_oid;
+} updated_tip;
+
+typedef struct {
+	git_vector updated_tips;
+} record_callbacks_data;
+
+typedef struct {
+	const char *name;
+	const git_oid *oid;
+} expected_ref;
+
+void updated_tip_free(updated_tip *t);
+
+void record_callbacks_data_clear(record_callbacks_data *data);
+
+/**
+ * Callback for git_remote_update_tips that records updates
+ *
+ * @param data (git_vector *) of updated_tip instances
+ */
+int record_update_tips_cb(const char *refname, const git_oid *a, const git_oid *b, void *data);
+
+/**
+ * Callback for git_remote_list that adds refspecs to delete each ref
+ *
+ * @param head a ref on the remote
+ * @param payload a git_push instance
+ */
+int delete_ref_cb(git_remote_head *head, void *payload);
+
+/**
+ * Callback for git_remote_list that adds refspecs to vector
+ *
+ * @param head a ref on the remote
+ * @param payload (git_vector *) of git_remote_head instances
+ */
+int record_ref_cb(git_remote_head *head, void *payload);
+
+/**
+ * Verifies that refs on remote stored by record_ref_cb match the expected
+ * names, oids, and order.
+ *
+ * @param actual_refs actual refs stored by record_ref_cb()
+ * @param expected_refs expected remote refs
+ * @param expected_refs_len length of expected_refs
+ */
+void verify_remote_refs(git_vector *actual_refs, const expected_ref expected_refs[], size_t expected_refs_len);
+
+#endif /* INCLUDE_cl_push_util_h__ */

tests-clar/object/lookup.c

@@ -62,3 +62,15 @@ void test_object_lookup__lookup_wrong_type_eventually_returns_enotfound(void)
 	cl_assert_equal_i(
 		GIT_ENOTFOUND, git_object_lookup(&object, g_repo, &oid, GIT_OBJ_TAG));
 }
+
+void test_object_lookup__lookup_object_type_by_oid(void)
+{
+	const char *commit = "e90810b8df3e80c413d903f631643c716887138d";
+	git_oid oid;
+	git_otype type;
+
+	cl_git_pass(git_oid_fromstr(&oid, commit));
+
+	cl_git_pass(git_object_oid2type(&type, g_repo, &oid));
+	cl_assert(type == GIT_OBJ_COMMIT);
+}

tests-clar/resources/push.sh

+#!/bin/sh
+#creates push_src repo for libgit2 push tests.
+set -eu
+
+#Create src repo for push
+mkdir push_src
+pushd push_src
+  git init
+  
+  echo a > a.txt
+  git add .
+  git commit -m 'added a.txt'
+  
+  mkdir fold
+  echo b > fold/b.txt
+  git add .
+  git commit -m 'added fold and fold/b.txt'
+  
+  git branch b1 #b1 and b2 are the same
+  git branch b2
+  
+  git checkout -b b3
+  echo edit >> a.txt
+  git add .
+  git commit -m 'edited a.txt'
+
+  git checkout -b b4 master
+  echo edit >> fold\b.txt
+  git add .
+  git commit -m 'edited fold\b.txt'
+  
+  git checkout -b b5 master
+  git submodule add ../testrepo.git submodule
+  git commit -m "added submodule named 'submodule' pointing to '../testrepo.git'"
+  
+  git checkout master
+  git merge -m "merge b3, b4, and b5 to master" b3 b4 b5
+
+  #Log commits to include in testcase
+  git log --format=oneline --decorate --graph
+  #*-.   951bbbb90e2259a4c8950db78946784fb53fcbce (HEAD, master) merge b3, b4, and b5 to master
+  #|\ \
+  #| | * fa38b91f199934685819bea316186d8b008c52a2 (b5) added submodule named 'submodule' pointing to '../testrepo.git'
+  #| * | 27b7ce66243eb1403862d05f958c002312df173d (b4) edited fold\b.txt
+  #| |/
+  #* | d9b63a88223d8367516f50bd131a5f7349b7f3e4 (b3) edited a.txt
+  #|/
+  #* a78705c3b2725f931d3ee05348d83cc26700f247 (b2, b1) added fold and fold/b.txt
+  #* 5c0bb3d1b9449d1cc69d7519fd05166f01840915 added a.txt
+
+  #fix paths so that we can add repo folders under libgit2 repo
+  #rename .git to .gitted
+  find . -name .git -exec mv -i '{}' '{}ted' \;
+  mv -i .gitmodules gitmodules
+popd

tests-clar/resources/push_src/.gitted/COMMIT_EDITMSG

+added submodule named 'submodule' pointing to '../testrepo.git'

tests-clar/resources/push_src/.gitted/HEAD

+ref: refs/heads/master

tests-clar/resources/push_src/.gitted/ORIG_HEAD

+a78705c3b2725f931d3ee05348d83cc26700f247

tests-clar/resources/push_src/.gitted/config

+[core]
+	repositoryformatversion = 0
+	filemode = false
+	bare = false
+	logallrefupdates = true
+	symlinks = false
+	ignorecase = true
+	hideDotFiles = dotGitOnly
+[submodule "submodule"]
+	url = m:/dd/libgit2/tests-clar/resources/testrepo.git

tests-clar/resources/push_src/.gitted/description

+Unnamed repository; edit this file 'description' to name the repository.

tests-clar/resources/push_src/.gitted/hooks/applypatch-msg.sample

+#!/bin/sh
+#
+# An example hook script to check the commit log message taken by
+# applypatch from an e-mail message.
+#
+# The hook should exit with non-zero status after issuing an
+# appropriate message if it wants to stop the commit.  The hook is
+# allowed to edit the commit message file.
+#
+# To enable this hook, rename this file to "applypatch-msg".
+
+. git-sh-setup
+test -x "$GIT_DIR/hooks/commit-msg" &&
+	exec "$GIT_DIR/hooks/commit-msg" ${1+"$@"}
+:

tests-clar/resources/push_src/.gitted/hooks/commit-msg.sample

+#!/bin/sh
+#
+# An example hook script to check the commit log message.
+# Called by "git commit" with one argument, the name of the file
+# that has the commit message.  The hook should exit with non-zero
+# status after issuing an appropriate message if it wants to stop the
+# commit.  The hook is allowed to edit the commit message file.
+#
+# To enable this hook, rename this file to "commit-msg".
+
+# Uncomment the below to add a Signed-off-by line to the message.
+# Doing this in a hook is a bad idea in general, but the prepare-commit-msg
+# hook is more suited to it.
+#
+# SOB=$(git var GIT_AUTHOR_IDENT | sed -n 's/^\(.*>\).*$/Signed-off-by: \1/p')
+# grep -qs "^$SOB" "$1" || echo "$SOB" >> "$1"
+
+# This example catches duplicate Signed-off-by lines.
+
+test "" = "$(grep '^Signed-off-by: ' "$1" |
+	 sort | uniq -c | sed -e '/^[ 	]*1[ 	]/d')" || {
+	echo >&2 Duplicate Signed-off-by lines.
+	exit 1
+}

tests-clar/resources/push_src/.gitted/hooks/post-commit.sample

+#!/bin/sh
+#
+# An example hook script that is called after a successful
+# commit is made.
+#
+# To enable this hook, rename this file to "post-commit".
+
+: Nothing

tests-clar/resources/push_src/.gitted/hooks/post-receive.sample

+#!/bin/sh
+#
+# An example hook script for the "post-receive" event.
+#
+# The "post-receive" script is run after receive-pack has accepted a pack
+# and the repository has been updated.  It is passed arguments in through
+# stdin in the form
+#  <oldrev> <newrev> <refname>
+# For example:
+#  aa453216d1b3e49e7f6f98441fa56946ddcd6a20 68f7abf4e6f922807889f52bc043ecd31b79f814 refs/heads/master
+#
+# see contrib/hooks/ for a sample, or uncomment the next line and
+# rename the file to "post-receive".
+
+#. /usr/share/doc/git-core/contrib/hooks/post-receive-email

tests-clar/resources/push_src/.gitted/hooks/post-update.sample

+#!/bin/sh
+#
+# An example hook script to prepare a packed repository for use over
+# dumb transports.
+#
+# To enable this hook, rename this file to "post-update".
+
+exec git update-server-info

tests-clar/resources/push_src/.gitted/hooks/pre-applypatch.sample

+#!/bin/sh
+#
+# An example hook script to verify what is about to be committed
+# by applypatch from an e-mail message.
+#
+# The hook should exit with non-zero status after issuing an
+# appropriate message if it wants to stop the commit.
+#
+# To enable this hook, rename this file to "pre-applypatch".
+
+. git-sh-setup
+test -x "$GIT_DIR/hooks/pre-commit" &&
+	exec "$GIT_DIR/hooks/pre-commit" ${1+"$@"}
+:

tests-clar/resources/push_src/.gitted/hooks/pre-commit.sample

+#!/bin/sh
+#
+# An example hook script to verify what is about to be committed.
+# Called by "git commit" with no arguments.  The hook should
+# exit with non-zero status after issuing an appropriate message if
+# it wants to stop the commit.
+#
+# To enable this hook, rename this file to "pre-commit".
+
+if git rev-parse --verify HEAD >/dev/null 2>&1
+then
+	against=HEAD
+else
+	# Initial commit: diff against an empty tree object
+	against=4b825dc642cb6eb9a060e54bf8d69288fbee4904
+fi
+
+# If you want to allow non-ascii filenames set this variable to true.
+allownonascii=$(git config hooks.allownonascii)
+
+# Redirect output to stderr.
+exec 1>&2
+
+# Cross platform projects tend to avoid non-ascii filenames; prevent
+# them from being added to the repository. We exploit the fact that the
+# printable range starts at the space character and ends with tilde.
+if [ "$allownonascii" != "true" ] &&
+	# Note that the use of brackets around a tr range is ok here, (it's
+	# even required, for portability to Solaris 10's /usr/bin/tr), since
+	# the square bracket bytes happen to fall in the designated range.
+	test $(git diff --cached --name-only --diff-filter=A -z $against |
+	  LC_ALL=C tr -d '[ -~]\0' | wc -c) != 0
+then
+	echo "Error: Attempt to add a non-ascii file name."
+	echo
+	echo "This can cause problems if you want to work"
+	echo "with people on other platforms."
+	echo
+	echo "To be portable it is advisable to rename the file ..."
+	echo
+	echo "If you know what you are doing you can disable this"
+	echo "check using:"
+	echo
+	echo "  git config hooks.allownonascii true"
+	echo
+	exit 1
+fi
+
+# If there are whitespace errors, print the offending file names and fail.
+exec git diff-index --check --cached $against --

tests-clar/resources/push_src/.gitted/hooks/pre-rebase.sample

+#!/bin/sh
+#
+# Copyright (c) 2006, 2008 Junio C Hamano
+#
+# The "pre-rebase" hook is run just before "git rebase" starts doing
+# its job, and can prevent the command from running by exiting with
+# non-zero status.
+#
+# The hook is called with the following parameters:
+#
+# $1 -- the upstream the series was forked from.
+# $2 -- the branch being rebased (or empty when rebasing the current branch).
+#
+# This sample shows how to prevent topic branches that are already
+# merged to 'next' branch from getting rebased, because allowing it
+# would result in rebasing already published history.
+
+publish=next
+basebranch="$1"
+if test "$#" = 2
+then
+	topic="refs/heads/$2"
+else
+	topic=`git symbolic-ref HEAD` ||
+	exit 0 ;# we do not interrupt rebasing detached HEAD
+fi
+
+case "$topic" in
+refs/heads/??/*)
+	;;
+*)
+	exit 0 ;# we do not interrupt others.
+	;;
+esac
+
+# Now we are dealing with a topic branch being rebased
+# on top of master.  Is it OK to rebase it?
+
+# Does the topic really exist?
+git show-ref -q "$topic" || {
+	echo >&2 "No such branch $topic"
+	exit 1
+}
+
+# Is topic fully merged to master?
+not_in_master=`git rev-list --pretty=oneline ^master "$topic"`
+if test -z "$not_in_master"
+then
+	echo >&2 "$topic is fully merged to master; better remove it."
+	exit 1 ;# we could allow it, but there is no point.
+fi
+
+# Is topic ever merged to next?  If so you should not be rebasing it.
+only_next_1=`git rev-list ^master "^$topic" ${publish} | sort`
+only_next_2=`git rev-list ^master           ${publish} | sort`
+if test "$only_next_1" = "$only_next_2"
+then
+	not_in_topic=`git rev-list "^$topic" master`
+	if test -z "$not_in_topic"
+	then
+		echo >&2 "$topic is already up-to-date with master"
+		exit 1 ;# we could allow it, but there is no point.
+	else
+		exit 0
+	fi
+else
+	not_in_next=`git rev-list --pretty=oneline ^${publish} "$topic"`
+	/usr/bin/perl -e '
+		my $topic = $ARGV[0];
+		my $msg = "* $topic has commits already merged to public branch:\n";
+		my (%not_in_next) = map {
+			/^([0-9a-f]+) /;
+			($1 => 1);
+		} split(/\n/, $ARGV[1]);
+		for my $elem (map {
+				/^([0-9a-f]+) (.*)$/;
+				[$1 => $2];
+			} split(/\n/, $ARGV[2])) {
+			if (!exists $not_in_next{$elem->[0]}) {
+				if ($msg) {
+					print STDERR $msg;
+					undef $msg;
+				}
+				print STDERR " $elem->[1]\n";
+			}
+		}
+	' "$topic" "$not_in_next" "$not_in_master"
+	exit 1
+fi
+
+exit 0
+
+################################################################
+
+This sample hook safeguards topic branches that have been
+published from being rewound.
+
+The workflow assumed here is:
+
+ * Once a topic branch forks from "master", "master" is never
+   merged into it again (either directly or indirectly).
+
+ * Once a topic branch is fully cooked and merged into "master",
+   it is deleted.  If you need to build on top of it to correct
+   earlier mistakes, a new topic branch is created by forking at
+   the tip of the "master".  This is not strictly necessary, but
+   it makes it easier to keep your history simple.
+
+ * Whenever you need to test or publish your changes to topic
+   branches, merge them into "next" branch.
+
+The script, being an example, hardcodes the publish branch name
+to be "next", but it is trivial to make it configurable via
+$GIT_DIR/config mechanism.
+
+With this workflow, you would want to know:
+
+(1) ... if a topic branch has ever been merged to "next".  Young
+    topic branches can have stupid mistakes you would rather
+    clean up before publishing, and things that have not been
+    merged into other branches can be easily rebased without
+    affecting other people.  But once it is published, you would
+    not want to rewind it.
+
+(2) ... if a topic branch has been fully merged to "master".
+    Then you can delete it.  More importantly, you should not
+    build on top of it -- other people may already want to
+    change things related to the topic as patches against your
+    "master", so if you need further changes, it is better to
+    fork the topic (perhaps with the same name) afresh from the
+    tip of "master".
+
+Let's look at this example:
+
+		   o---o---o---o---o---o---o---o---o---o "next"
+		  /       /           /           /
+		 /   a---a---b A     /           /
+		/   /               /           /
+	       /   /   c---c---c---c B         /
+	      /   /   /             \         /
+	     /   /   /   b---b C     \       /
+	    /   /   /   /             \     /
+    ---o---o---o---o---o---o---o---o---o---o---o "master"
+
+
+A, B and C are topic branches.
+
+ * A has one fix since it was merged up to "next".
+
+ * B has finished.  It has been fully merged up to "master" and "next",
+   and is ready to be deleted.
+
+ * C has not merged to "next" at all.
+
+We would want to allow C to be rebased, refuse A, and encourage
+B to be deleted.
+
+To compute (1):
+
+	git rev-list ^master ^topic next
+	git rev-list ^master        next
+
+	if these match, topic has not merged in next at all.
+
+To compute (2):
+
+	git rev-list master..topic
+
+	if this is empty, it is fully merged to "master".

tests-clar/resources/push_src/.gitted/hooks/prepare-commit-msg.sample

+#!/bin/sh
+#
+# An example hook script to prepare the commit log message.
+# Called by "git commit" with the name of the file that has the
+# commit message, followed by the description of the commit
+# message's source.  The hook's purpose is to edit the commit
+# message file.  If the hook fails with a non-zero status,
+# the commit is aborted.
+#
+# To enable this hook, rename this file to "prepare-commit-msg".
+
+# This hook includes three examples.  The first comments out the
+# "Conflicts:" part of a merge commit.
+#
+# The second includes the output of "git diff --name-status -r"
+# into the message, just before the "git status" output.  It is
+# commented because it doesn't cope with --amend or with squashed
+# commits.
+#
+# The third example adds a Signed-off-by line to the message, that can
+# still be edited.  This is rarely a good idea.
+
+case "$2,$3" in
+  merge,)
+    /usr/bin/perl -i.bak -ne 's/^/# /, s/^# #/#/ if /^Conflicts/ .. /#/; print' "$1" ;;
+
+# ,|template,)
+#   /usr/bin/perl -i.bak -pe '
+#      print "\n" . `git diff --cached --name-status -r`
+#	 if /^#/ && $first++ == 0' "$1" ;;
+
+  *) ;;
+esac
+
+# SOB=$(git var GIT_AUTHOR_IDENT | sed -n 's/^\(.*>\).*$/Signed-off-by: \1/p')
+# grep -qs "^$SOB" "$1" || echo "$SOB" >> "$1"

tests-clar/resources/push_src/.gitted/hooks/update.sample

+#!/bin/sh
+#
+# An example hook script to blocks unannotated tags from entering.
+# Called by "git receive-pack" with arguments: refname sha1-old sha1-new
+#
+# To enable this hook, rename this file to "update".
+#
+# Config
+# ------
+# hooks.allowunannotated
+#   This boolean sets whether unannotated tags will be allowed into the
+#   repository.  By default they won't be.
+# hooks.allowdeletetag
+#   This boolean sets whether deleting tags will be allowed in the
+#   repository.  By default they won't be.
+# hooks.allowmodifytag
+#   This boolean sets whether a tag may be modified after creation. By default
+#   it won't be.
+# hooks.allowdeletebranch
+#   This boolean sets whether deleting branches will be allowed in the
+#   repository.  By default they won't be.
+# hooks.denycreatebranch
+#   This boolean sets whether remotely creating branches will be denied
+#   in the repository.  By default this is allowed.
+#
+
+# --- Command line
+refname="$1"
+oldrev="$2"
+newrev="$3"
+
+# --- Safety check
+if [ -z "$GIT_DIR" ]; then
+	echo "Don't run this script from the command line." >&2
+	echo " (if you want, you could supply GIT_DIR then run" >&2
+	echo "  $0 <ref> <oldrev> <newrev>)" >&2
+	exit 1
+fi
+
+if [ -z "$refname" -o -z "$oldrev" -o -z "$newrev" ]; then
+	echo "Usage: $0 <ref> <oldrev> <newrev>" >&2
+	exit 1
+fi
+
+# --- Config
+allowunannotated=$(git config --bool hooks.allowunannotated)
+allowdeletebranch=$(git config --bool hooks.allowdeletebranch)
+denycreatebranch=$(git config --bool hooks.denycreatebranch)
+allowdeletetag=$(git config --bool hooks.allowdeletetag)
+allowmodifytag=$(git config --bool hooks.allowmodifytag)
+
+# check for no description
+projectdesc=$(sed -e '1q' "$GIT_DIR/description")
+case "$projectdesc" in
+"Unnamed repository"* | "")
+	echo "*** Project description file hasn't been set" >&2
+	exit 1
+	;;
+esac
+
+# --- Check types
+# if $newrev is 0000...0000, it's a commit to delete a ref.
+zero="0000000000000000000000000000000000000000"
+if [ "$newrev" = "$zero" ]; then
+	newrev_type=delete
+else
+	newrev_type=$(git cat-file -t $newrev)
+fi
+
+case "$refname","$newrev_type" in
+	refs/tags/*,commit)
+		# un-annotated tag
+		short_refname=${refname##refs/tags/}
+		if [ "$allowunannotated" != "true" ]; then
+			echo "*** The un-annotated tag, $short_refname, is not allowed in this repository" >&2
+			echo "*** Use 'git tag [ -a | -s ]' for tags you want to propagate." >&2
+			exit 1
+		fi
+		;;
+	refs/tags/*,delete)
+		# delete tag
+		if [ "$allowdeletetag" != "true" ]; then
+			echo "*** Deleting a tag is not allowed in this repository" >&2
+			exit 1
+		fi
+		;;
+	refs/tags/*,tag)
+		# annotated tag
+		if [ "$allowmodifytag" != "true" ] && git rev-parse $refname > /dev/null 2>&1
+		then
+			echo "*** Tag '$refname' already exists." >&2
+			echo "*** Modifying a tag is not allowed in this repository." >&2
+			exit 1
+		fi
+		;;
+	refs/heads/*,commit)
+		# branch
+		if [ "$oldrev" = "$zero" -a "$denycreatebranch" = "true" ]; then
+			echo "*** Creating a branch is not allowed in this repository" >&2
+			exit 1
+		fi
+		;;
+	refs/heads/*,delete)
+		# delete branch
+		if [ "$allowdeletebranch" != "true" ]; then
+			echo "*** Deleting a branch is not allowed in this repository" >&2
+			exit 1
+		fi
+		;;
+	refs/remotes/*,commit)
+		# tracking branch
+		;;
+	refs/remotes/*,delete)
+		# delete tracking branch
+		if [ "$allowdeletebranch" != "true" ]; then
+			echo "*** Deleting a tracking branch is not allowed in this repository" >&2
+			exit 1
+		fi
+		;;
+	*)
+		# Anything else (is there anything else?)
+		echo "*** Update hook: unknown type of update to ref $refname of type $newrev_type" >&2
+		exit 1
+		;;
+esac
+
+# --- Finished
+exit 0

tests-clar/resources/push_src/.gitted/info/exclude

+# git ls-files --others --exclude-from=.git/info/exclude
+# Lines that start with '#' are comments.
+# For a project mostly in C, the following would be a good set of
+# exclude patterns (uncomment them if you want to use them):
+# *.[oa]
+# *~

tests-clar/resources/push_src/.gitted/logs/HEAD

+0000000000000000000000000000000000000000 5c0bb3d1b9449d1cc69d7519fd05166f01840915 Congyi Wu <congyiwu@gmail.com> 1352923200 -0500	commit (initial): added a.txt
+5c0bb3d1b9449d1cc69d7519fd05166f01840915 a78705c3b2725f931d3ee05348d83cc26700f247 Congyi Wu <congyiwu@gmail.com> 1352923200 -0500	commit: added fold and fold/b.txt
+a78705c3b2725f931d3ee05348d83cc26700f247 a78705c3b2725f931d3ee05348d83cc26700f247 Congyi Wu <congyiwu@gmail.com> 1352923201 -0500	checkout: moving from master to b3
+a78705c3b2725f931d3ee05348d83cc26700f247 d9b63a88223d8367516f50bd131a5f7349b7f3e4 Congyi Wu <congyiwu@gmail.com> 1352923201 -0500	commit: edited a.txt
+d9b63a88223d8367516f50bd131a5f7349b7f3e4 a78705c3b2725f931d3ee05348d83cc26700f247 Congyi Wu <congyiwu@gmail.com> 1352923201 -0500	checkout: moving from b3 to b4
+a78705c3b2725f931d3ee05348d83cc26700f247 27b7ce66243eb1403862d05f958c002312df173d Congyi Wu <congyiwu@gmail.com> 1352923201 -0500	commit: edited fold\b.txt
+27b7ce66243eb1403862d05f958c002312df173d a78705c3b2725f931d3ee05348d83cc26700f247 Congyi Wu <congyiwu@gmail.com> 1352923201 -0500	checkout: moving from b4 to b5
+a78705c3b2725f931d3ee05348d83cc26700f247 fa38b91f199934685819bea316186d8b008c52a2 Congyi Wu <congyiwu@gmail.com> 1352923206 -0500	commit: added submodule named 'submodule' pointing to '../testrepo.git'
+fa38b91f199934685819bea316186d8b008c52a2 a78705c3b2725f931d3ee05348d83cc26700f247 Congyi Wu <congyiwu@gmail.com> 1352923207 -0500	checkout: moving from b5 to master
+a78705c3b2725f931d3ee05348d83cc26700f247 951bbbb90e2259a4c8950db78946784fb53fcbce Congyi Wu <congyiwu@gmail.com> 1352923207 -0500	merge b3 b4 b5: Merge made by the 'octopus' strategy.

tests-clar/resources/push_src/.gitted/logs/refs/heads/b1

+0000000000000000000000000000000000000000 a78705c3b2725f931d3ee05348d83cc26700f247 Congyi Wu <congyiwu@gmail.com> 1352923200 -0500	branch: Created from master

tests-clar/resources/push_src/.gitted/logs/refs/heads/b2

+0000000000000000000000000000000000000000 a78705c3b2725f931d3ee05348d83cc26700f247 Congyi Wu <congyiwu@gmail.com> 1352923200 -0500	branch: Created from master

tests-clar/resources/push_src/.gitted/logs/refs/heads/b3

+0000000000000000000000000000000000000000 a78705c3b2725f931d3ee05348d83cc26700f247 Congyi Wu <congyiwu@gmail.com> 1352923201 -0500	branch: Created from HEAD
+a78705c3b2725f931d3ee05348d83cc26700f247 d9b63a88223d8367516f50bd131a5f7349b7f3e4 Congyi Wu <congyiwu@gmail.com> 1352923201 -0500	commit: edited a.txt

tests-clar/resources/push_src/.gitted/logs/refs/heads/b4

+0000000000000000000000000000000000000000 a78705c3b2725f931d3ee05348d83cc26700f247 Congyi Wu <congyiwu@gmail.com> 1352923201 -0500	branch: Created from master
+a78705c3b2725f931d3ee05348d83cc26700f247 27b7ce66243eb1403862d05f958c002312df173d Congyi Wu <congyiwu@gmail.com> 1352923201 -0500	commit: edited fold\b.txt

tests-clar/resources/push_src/.gitted/logs/refs/heads/b5

+0000000000000000000000000000000000000000 a78705c3b2725f931d3ee05348d83cc26700f247 Congyi Wu <congyiwu@gmail.com> 1352923201 -0500	branch: Created from master
+a78705c3b2725f931d3ee05348d83cc26700f247 fa38b91f199934685819bea316186d8b008c52a2 Congyi Wu <congyiwu@gmail.com> 1352923206 -0500	commit: added submodule named 'submodule' pointing to '../testrepo.git'

tests-clar/resources/push_src/.gitted/logs/refs/heads/master

+0000000000000000000000000000000000000000 5c0bb3d1b9449d1cc69d7519fd05166f01840915 Congyi Wu <congyiwu@gmail.com> 1352923200 -0500	commit (initial): added a.txt
+5c0bb3d1b9449d1cc69d7519fd05166f01840915 a78705c3b2725f931d3ee05348d83cc26700f247 Congyi Wu <congyiwu@gmail.com> 1352923200 -0500	commit: added fold and fold/b.txt
+a78705c3b2725f931d3ee05348d83cc26700f247 951bbbb90e2259a4c8950db78946784fb53fcbce Congyi Wu <congyiwu@gmail.com> 1352923207 -0500	merge b3 b4 b5: Merge made by the 'octopus' strategy.

tests-clar/resources/push_src/.gitted/modules/submodule/HEAD

+ref: refs/heads/master

tests-clar/resources/push_src/.gitted/modules/submodule/config

+[core]
+	repositoryformatversion = 0
+	filemode = false
+	bare = false
+	logallrefupdates = true
+	worktree = ../../../submodule
+	symlinks = false
+	ignorecase = true
+	hideDotFiles = dotGitOnly
+[remote "origin"]
+	fetch = +refs/heads/*:refs/remotes/origin/*
+	url = m:/dd/libgit2/tests-clar/resources/testrepo.git
+[branch "master"]
+	remote = origin
+	merge = refs/heads/master

tests-clar/resources/push_src/.gitted/modules/submodule/description

+Unnamed repository; edit this file 'description' to name the repository.

tests-clar/resources/push_src/.gitted/modules/submodule/hooks/applypatch-msg.sample

+#!/bin/sh
+#
+# An example hook script to check the commit log message taken by
+# applypatch from an e-mail message.
+#
+# The hook should exit with non-zero status after issuing an
+# appropriate message if it wants to stop the commit.  The hook is
+# allowed to edit the commit message file.
+#
+# To enable this hook, rename this file to "applypatch-msg".
+
+. git-sh-setup
+test -x "$GIT_DIR/hooks/commit-msg" &&
+	exec "$GIT_DIR/hooks/commit-msg" ${1+"$@"}
+:

tests-clar/resources/push_src/.gitted/modules/submodule/hooks/commit-msg.sample

+#!/bin/sh
+#
+# An example hook script to check the commit log message.
+# Called by "git commit" with one argument, the name of the file
+# that has the commit message.  The hook should exit with non-zero
+# status after issuing an appropriate message if it wants to stop the
+# commit.  The hook is allowed to edit the commit message file.
+#
+# To enable this hook, rename this file to "commit-msg".
+
+# Uncomment the below to add a Signed-off-by line to the message.
+# Doing this in a hook is a bad idea in general, but the prepare-commit-msg
+# hook is more suited to it.
+#
+# SOB=$(git var GIT_AUTHOR_IDENT | sed -n 's/^\(.*>\).*$/Signed-off-by: \1/p')
+# grep -qs "^$SOB" "$1" || echo "$SOB" >> "$1"
+
+# This example catches duplicate Signed-off-by lines.
+
+test "" = "$(grep '^Signed-off-by: ' "$1" |
+	 sort | uniq -c | sed -e '/^[ 	]*1[ 	]/d')" || {
+	echo >&2 Duplicate Signed-off-by lines.
+	exit 1
+}

tests-clar/resources/push_src/.gitted/modules/submodule/hooks/post-commit.sample

+#!/bin/sh
+#
+# An example hook script that is called after a successful
+# commit is made.
+#
+# To enable this hook, rename this file to "post-commit".
+
+: Nothing

tests-clar/resources/push_src/.gitted/modules/submodule/hooks/post-receive.sample

+#!/bin/sh
+#
+# An example hook script for the "post-receive" event.
+#
+# The "post-receive" script is run after receive-pack has accepted a pack
+# and the repository has been updated.  It is passed arguments in through
+# stdin in the form
+#  <oldrev> <newrev> <refname>
+# For example:
+#  aa453216d1b3e49e7f6f98441fa56946ddcd6a20 68f7abf4e6f922807889f52bc043ecd31b79f814 refs/heads/master
+#
+# see contrib/hooks/ for a sample, or uncomment the next line and
+# rename the file to "post-receive".
+
+#. /usr/share/doc/git-core/contrib/hooks/post-receive-email

tests-clar/resources/push_src/.gitted/modules/submodule/hooks/post-update.sample

+#!/bin/sh
+#
+# An example hook script to prepare a packed repository for use over
+# dumb transports.
+#
+# To enable this hook, rename this file to "post-update".
+
+exec git update-server-info

tests-clar/resources/push_src/.gitted/modules/submodule/hooks/pre-applypatch.sample

+#!/bin/sh
+#
+# An example hook script to verify what is about to be committed
+# by applypatch from an e-mail message.
+#
+# The hook should exit with non-zero status after issuing an
+# appropriate message if it wants to stop the commit.
+#
+# To enable this hook, rename this file to "pre-applypatch".
+
+. git-sh-setup
+test -x "$GIT_DIR/hooks/pre-commit" &&
+	exec "$GIT_DIR/hooks/pre-commit" ${1+"$@"}
+:

tests-clar/resources/push_src/.gitted/modules/submodule/hooks/pre-commit.sample

+#!/bin/sh
+#
+# An example hook script to verify what is about to be committed.
+# Called by "git commit" with no arguments.  The hook should
+# exit with non-zero status after issuing an appropriate message if
+# it wants to stop the commit.
+#
+# To enable this hook, rename this file to "pre-commit".
+
+if git rev-parse --verify HEAD >/dev/null 2>&1
+then
+	against=HEAD
+else
+	# Initial commit: diff against an empty tree object
+	against=4b825dc642cb6eb9a060e54bf8d69288fbee4904
+fi
+
+# If you want to allow non-ascii filenames set this variable to true.
+allownonascii=$(git config hooks.allownonascii)
+
+# Redirect output to stderr.
+exec 1>&2
+
+# Cross platform projects tend to avoid non-ascii filenames; prevent
+# them from being added to the repository. We exploit the fact that the
+# printable range starts at the space character and ends with tilde.
+if [ "$allownonascii" != "true" ] &&
+	# Note that the use of brackets around a tr range is ok here, (it's
+	# even required, for portability to Solaris 10's /usr/bin/tr), since
+	# the square bracket bytes happen to fall in the designated range.
+	test $(git diff --cached --name-only --diff-filter=A -z $against |
+	  LC_ALL=C tr -d '[ -~]\0' | wc -c) != 0
+then
+	echo "Error: Attempt to add a non-ascii file name."
+	echo
+	echo "This can cause problems if you want to work"
+	echo "with people on other platforms."
+	echo
+	echo "To be portable it is advisable to rename the file ..."
+	echo
+	echo "If you know what you are doing you can disable this"
+	echo "check using:"
+	echo
+	echo "  git config hooks.allownonascii true"
+	echo
+	exit 1
+fi
+
+# If there are whitespace errors, print the offending file names and fail.
+exec git diff-index --check --cached $against --

tests-clar/resources/push_src/.gitted/modules/submodule/hooks/pre-rebase.sample

+#!/bin/sh
+#
+# Copyright (c) 2006, 2008 Junio C Hamano
+#
+# The "pre-rebase" hook is run just before "git rebase" starts doing
+# its job, and can prevent the command from running by exiting with
+# non-zero status.
+#
+# The hook is called with the following parameters:
+#
+# $1 -- the upstream the series was forked from.
+# $2 -- the branch being rebased (or empty when rebasing the current branch).
+#
+# This sample shows how to prevent topic branches that are already
+# merged to 'next' branch from getting rebased, because allowing it
+# would result in rebasing already published history.
+
+publish=next
+basebranch="$1"
+if test "$#" = 2
+then
+	topic="refs/heads/$2"
+else
+	topic=`git symbolic-ref HEAD` ||
+	exit 0 ;# we do not interrupt rebasing detached HEAD
+fi
+
+case "$topic" in
+refs/heads/??/*)
+	;;
+*)
+	exit 0 ;# we do not interrupt others.
+	;;
+esac
+
+# Now we are dealing with a topic branch being rebased
+# on top of master.  Is it OK to rebase it?
+
+# Does the topic really exist?
+git show-ref -q "$topic" || {
+	echo >&2 "No such branch $topic"
+	exit 1
+}
+
+# Is topic fully merged to master?
+not_in_master=`git rev-list --pretty=oneline ^master "$topic"`
+if test -z "$not_in_master"
+then
+	echo >&2 "$topic is fully merged to master; better remove it."
+	exit 1 ;# we could allow it, but there is no point.
+fi
+
+# Is topic ever merged to next?  If so you should not be rebasing it.
+only_next_1=`git rev-list ^master "^$topic" ${publish} | sort`
+only_next_2=`git rev-list ^master           ${publish} | sort`
+if test "$only_next_1" = "$only_next_2"
+then
+	not_in_topic=`git rev-list "^$topic" master`
+	if test -z "$not_in_topic"
+	then
+		echo >&2 "$topic is already up-to-date with master"
+		exit 1 ;# we could allow it, but there is no point.
+	else
+		exit 0
+	fi
+else
+	not_in_next=`git rev-list --pretty=oneline ^${publish} "$topic"`
+	/usr/bin/perl -e '
+		my $topic = $ARGV[0];
+		my $msg = "* $topic has commits already merged to public branch:\n";
+		my (%not_in_next) = map {
+			/^([0-9a-f]+) /;
+			($1 => 1);
+		} split(/\n/, $ARGV[1]);
+		for my $elem (map {
+				/^([0-9a-f]+) (.*)$/;
+				[$1 => $2];
+			} split(/\n/, $ARGV[2])) {
+			if (!exists $not_in_next{$elem->[0]}) {
+				if ($msg) {
+					print STDERR $msg;
+					undef $msg;
+				}
+				print STDERR " $elem->[1]\n";
+			}
+		}
+	' "$topic" "$not_in_next" "$not_in_master"
+	exit 1
+fi
+
+exit 0
+
+################################################################
+
+This sample hook safeguards topic branches that have been
+published from being rewound.
+
+The workflow assumed here is:
+
+ * Once a topic branch forks from "master", "master" is never
+   merged into it again (either directly or indirectly).
+
+ * Once a topic branch is fully cooked and merged into "master",
+   it is deleted.  If you need to build on top of it to correct
+   earlier mistakes, a new topic branch is created by forking at
+   the tip of the "master".  This is not strictly necessary, but
+   it makes it easier to keep your history simple.
+
+ * Whenever you need to test or publish your changes to topic
+   branches, merge them into "next" branch.
+
+The script, being an example, hardcodes the publish branch name
+to be "next", but it is trivial to make it configurable via
+$GIT_DIR/config mechanism.
+
+With this workflow, you would want to know:
+
+(1) ... if a topic branch has ever been merged to "next".  Young
+    topic branches can have stupid mistakes you would rather
+    clean up before publishing, and things that have not been
+    merged into other branches can be easily rebased without
+    affecting other people.  But once it is published, you would
+    not want to rewind it.
+
+(2) ... if a topic branch has been fully merged to "master".
+    Then you can delete it.  More importantly, you should not
+    build on top of it -- other people may already want to
+    change things related to the topic as patches against your
+    "master", so if you need further changes, it is better to
+    fork the topic (perhaps with the same name) afresh from the
+    tip of "master".
+
+Let's look at this example:
+
+		   o---o---o---o---o---o---o---o---o---o "next"
+		  /       /           /           /
+		 /   a---a---b A     /           /
+		/   /               /           /
+	       /   /   c---c---c---c B         /
+	      /   /   /             \         /
+	     /   /   /   b---b C     \       /
+	    /   /   /   /             \     /
+    ---o---o---o---o---o---o---o---o---o---o---o "master"
+
+
+A, B and C are topic branches.
+
+ * A has one fix since it was merged up to "next".
+
+ * B has finished.  It has been fully merged up to "master" and "next",
+   and is ready to be deleted.
+
+ * C has not merged to "next" at all.
+
+We would want to allow C to be rebased, refuse A, and encourage
+B to be deleted.
+
+To compute (1):
+
+	git rev-list ^master ^topic next
+	git rev-list ^master        next
+
+	if these match, topic has not merged in next at all.
+
+To compute (2):
+
+	git rev-list master..topic
+
+	if this is empty, it is fully merged to "master".

tests-clar/resources/push_src/.gitted/modules/submodule/hooks/prepare-commit-msg.sample

+#!/bin/sh
+#
+# An example hook script to prepare the commit log message.
+# Called by "git commit" with the name of the file that has the
+# commit message, followed by the description of the commit
+# message's source.  The hook's purpose is to edit the commit
+# message file.  If the hook fails with a non-zero status,
+# the commit is aborted.
+#
+# To enable this hook, rename this file to "prepare-commit-msg".
+
+# This hook includes three examples.  The first comments out the
+# "Conflicts:" part of a merge commit.
+#
+# The second includes the output of "git diff --name-status -r"
+# into the message, just before the "git status" output.  It is
+# commented because it doesn't cope with --amend or with squashed
+# commits.
+#
+# The third example adds a Signed-off-by line to the message, that can
+# still be edited.  This is rarely a good idea.
+
+case "$2,$3" in
+  merge,)
+    /usr/bin/perl -i.bak -ne 's/^/# /, s/^# #/#/ if /^Conflicts/ .. /#/; print' "$1" ;;
+
+# ,|template,)
+#   /usr/bin/perl -i.bak -pe '
+#      print "\n" . `git diff --cached --name-status -r`
+#	 if /^#/ && $first++ == 0' "$1" ;;
+
+  *) ;;
+esac
+
+# SOB=$(git var GIT_AUTHOR_IDENT | sed -n 's/^\(.*>\).*$/Signed-off-by: \1/p')
+# grep -qs "^$SOB" "$1" || echo "$SOB" >> "$1"

tests-clar/resources/push_src/.gitted/modules/submodule/hooks/update.sample

+#!/bin/sh
+#
+# An example hook script to blocks unannotated tags from entering.
+# Called by "git receive-pack" with arguments: refname sha1-old sha1-new
+#
+# To enable this hook, rename this file to "update".
+#
+# Config
+# ------
+# hooks.allowunannotated
+#   This boolean sets whether unannotated tags will be allowed into the
+#   repository.  By default they won't be.
+# hooks.allowdeletetag
+#   This boolean sets whether deleting tags will be allowed in the
+#   repository.  By default they won't be.
+# hooks.allowmodifytag
+#   This boolean sets whether a tag may be modified after creation. By default
+#   it won't be.
+# hooks.allowdeletebranch
+#   This boolean sets whether deleting branches will be allowed in the
+#   repository.  By default they won't be.
+# hooks.denycreatebranch
+#   This boolean sets whether remotely creating branches will be denied
+#   in the repository.  By default this is allowed.
+#
+
+# --- Command line
+refname="$1"
+oldrev="$2"
+newrev="$3"
+
+# --- Safety check
+if [ -z "$GIT_DIR" ]; then
+	echo "Don't run this script from the command line." >&2
+	echo " (if you want, you could supply GIT_DIR then run" >&2
+	echo "  $0 <ref> <oldrev> <newrev>)" >&2
+	exit 1
+fi
+
+if [ -z "$refname" -o -z "$oldrev" -o -z "$newrev" ]; then
+	echo "Usage: $0 <ref> <oldrev> <newrev>" >&2
+	exit 1
+fi
+
+# --- Config
+allowunannotated=$(git config --bool hooks.allowunannotated)
+allowdeletebranch=$(git config --bool hooks.allowdeletebranch)
+denycreatebranch=$(git config --bool hooks.denycreatebranch)
+allowdeletetag=$(git config --bool hooks.allowdeletetag)
+allowmodifytag=$(git config --bool hooks.allowmodifytag)
+
+# check for no description
+projectdesc=$(sed -e '1q' "$GIT_DIR/description")
+case "$projectdesc" in
+"Unnamed repository"* | "")
+	echo "*** Project description file hasn't been set" >&2
+	exit 1
+	;;
+esac
+
+# --- Check types
+# if $newrev is 0000...0000, it's a commit to delete a ref.
+zero="0000000000000000000000000000000000000000"
+if [ "$newrev" = "$zero" ]; then
+	newrev_type=delete
+else
+	newrev_type=$(git cat-file -t $newrev)
+fi
+
+case "$refname","$newrev_type" in
+	refs/tags/*,commit)
+		# un-annotated tag
+		short_refname=${refname##refs/tags/}
+		if [ "$allowunannotated" != "true" ]; then
+			echo "*** The un-annotated tag, $short_refname, is not allowed in this repository" >&2
+			echo "*** Use 'git tag [ -a | -s ]' for tags you want to propagate." >&2
+			exit 1
+		fi
+		;;
+	refs/tags/*,delete)
+		# delete tag
+		if [ "$allowdeletetag" != "true" ]; then
+			echo "*** Deleting a tag is not allowed in this repository" >&2
+			exit 1
+		fi
+		;;
+	refs/tags/*,tag)
+		# annotated tag
+		if [ "$allowmodifytag" != "true" ] && git rev-parse $refname > /dev/null 2>&1
+		then
+			echo "*** Tag '$refname' already exists." >&2
+			echo "*** Modifying a tag is not allowed in this repository." >&2
+			exit 1
+		fi
+		;;
+	refs/heads/*,commit)
+		# branch
+		if [ "$oldrev" = "$zero" -a "$denycreatebranch" = "true" ]; then
+			echo "*** Creating a branch is not allowed in this repository" >&2
+			exit 1
+		fi
+		;;
+	refs/heads/*,delete)
+		# delete branch
+		if [ "$allowdeletebranch" != "true" ]; then
+			echo "*** Deleting a branch is not allowed in this repository" >&2
+			exit 1
+		fi
+		;;
+	refs/remotes/*,commit)
+		# tracking branch
+		;;
+	refs/remotes/*,delete)
+		# delete tracking branch
+		if [ "$allowdeletebranch" != "true" ]; then
+			echo "*** Deleting a tracking branch is not allowed in this repository" >&2
+			exit 1
+		fi
+		;;
+	*)
+		# Anything else (is there anything else?)
+		echo "*** Update hook: unknown type of update to ref $refname of type $newrev_type" >&2
+		exit 1
+		;;
+esac
+
+# --- Finished
+exit 0

tests-clar/resources/push_src/.gitted/modules/submodule/info/exclude

+# git ls-files --others --exclude-from=.git/info/exclude
+# Lines that start with '#' are comments.
+# For a project mostly in C, the following would be a good set of
+# exclude patterns (uncomment them if you want to use them):
+# *.[oa]
+# *~

tests-clar/resources/push_src/.gitted/modules/submodule/logs/HEAD

+0000000000000000000000000000000000000000 a65fedf39aefe402d3bb6e24df4d4f5fe4547750 Congyi Wu <congyiwu@gmail.com> 1352923205 -0500	clone: from m:/dd/libgit2/tests-clar/resources/testrepo.git

tests-clar/resources/push_src/.gitted/modules/submodule/logs/refs/heads/master

+0000000000000000000000000000000000000000 a65fedf39aefe402d3bb6e24df4d4f5fe4547750 Congyi Wu <congyiwu@gmail.com> 1352923205 -0500	clone: from m:/dd/libgit2/tests-clar/resources/testrepo.git

tests-clar/resources/push_src/.gitted/modules/submodule/logs/refs/remotes/origin/HEAD

+0000000000000000000000000000000000000000 a65fedf39aefe402d3bb6e24df4d4f5fe4547750 Congyi Wu <congyiwu@gmail.com> 1352923205 -0500	clone: from m:/dd/libgit2/tests-clar/resources/testrepo.git