Merge remote-tracking branch 'libgit/master' into branch-iterator

25 files changed, 1510 insertions, 98 deletions

diff --git a/.travis.yml b/.travis.yml
index 86f8265..2a03529 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -5,8 +5,7 @@ go:
   - 1.1
   - tip
 
-env:
-  - PKG_CONFIG_PATH=libgit2/install/lib/pkgconfig LD_LIBRARY_PATH=libgit2/install/lib
-
 install:
   - script/build-libgit2.sh
+  - export PKG_CONFIG_PATH=$PWD/libgit2/install/lib/pkgconfig
+  - export LD_LIBRARY_PATH=$PWD/libgit2/install/lib
diff --git a/blob.go b/blob.go
index ced2cb1..4277127 100644
--- a/blob.go
+++ b/blob.go
@@ -20,15 +20,16 @@ import (
 
 type Blob struct {
 	gitObject
+	cast_ptr *C.git_blob
 }
 
 func (v *Blob) Size() int64 {
-	return int64(C.git_blob_rawsize(v.ptr))
+	return int64(C.git_blob_rawsize(v.cast_ptr))
 }
 
 func (v *Blob) Contents() []byte {
-	size := C.int(C.git_blob_rawsize(v.ptr))
-	buffer := unsafe.Pointer(C.git_blob_rawcontent(v.ptr))
+	size := C.int(C.git_blob_rawsize(v.cast_ptr))
+	buffer := unsafe.Pointer(C.git_blob_rawcontent(v.cast_ptr))
 	return C.GoBytes(buffer, size)
 }
 
@@ -55,13 +56,13 @@ func blobChunkCb(buffer *C.char, maxLen C.size_t, payload unsafe.Pointer) int {
 	data := (*BlobCallbackData)(payload)
 	goBuf, err := data.Callback(int(maxLen))
 	if err == io.EOF {
-		return 1
+		return 0
 	} else if err != nil {
 		data.Error = err
 		return -1
 	}
-	C.memcpy(unsafe.Pointer(buffer), unsafe.Pointer(&goBuf), C.size_t(len(goBuf)))
-	return 0
+	C.memcpy(unsafe.Pointer(buffer), unsafe.Pointer(&goBuf[0]), C.size_t(len(goBuf)))
+	return len(goBuf)
 }
 
 func (repo *Repository) CreateBlobFromChunks(hintPath string, callback BlobChunkCallback) (*Oid, error) {
diff --git a/branch.go b/branch.go
index bb01f91..a0c1dbd 100644
--- a/branch.go
+++ b/branch.go
@@ -105,7 +105,7 @@ func (repo *Repository) CreateBranch(branchName string, target *Commit, force bo
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
-	ret := C.git_branch_create(&ref.ptr, repo.ptr, cBranchName, target.ptr, cForce, cSignature, cmsg)
+	ret := C.git_branch_create(&ref.ptr, repo.ptr, cBranchName, target.cast_ptr, cForce, cSignature, cmsg)
 	if ret < 0 {
 		return nil, MakeGitError(ret)
 	}
diff --git a/clone.go b/clone.go
new file mode 100644
index 0000000..1bc3261
--- /dev/null
+++ b/clone.go
@@ -0,0 +1,75 @@
+package git
+
+/*
+#include <git2.h>
+#include <git2/errors.h>
+
+*/
+import "C"
+import (
+	"runtime"
+	"unsafe"
+)
+
+type CloneOptions struct {
+	*CheckoutOpts
+	*RemoteCallbacks
+	Bare             bool
+	IgnoreCertErrors bool
+	RemoteName       string
+	CheckoutBranch   string
+}
+
+func Clone(url string, path string, options *CloneOptions) (*Repository, error) {
+	repo := new(Repository)
+
+	curl := C.CString(url)
+	defer C.free(unsafe.Pointer(curl))
+
+	cpath := C.CString(path)
+	defer C.free(unsafe.Pointer(cpath))
+
+	var copts C.git_clone_options
+	populateCloneOptions(&copts, options)
+
+	// finish populating clone options here so we can defer CString free
+	if len(options.RemoteName) != 0 {
+		copts.remote_name = C.CString(options.RemoteName)
+		defer C.free(unsafe.Pointer(copts.remote_name))
+	}
+
+	if len(options.CheckoutBranch) != 0 {
+		copts.checkout_branch = C.CString(options.CheckoutBranch)
+		defer C.free(unsafe.Pointer(copts.checkout_branch))
+	}
+
+	runtime.LockOSThread()
+	defer runtime.UnlockOSThread()
+	ret := C.git_clone(&repo.ptr, curl, cpath, &copts)
+	if ret < 0 {
+		return nil, MakeGitError(ret)
+	}
+
+	runtime.SetFinalizer(repo, (*Repository).Free)
+	return repo, nil
+}
+
+func populateCloneOptions(ptr *C.git_clone_options, opts *CloneOptions) {
+	C.git_clone_init_options(ptr, C.GIT_CLONE_OPTIONS_VERSION)
+
+	if opts == nil {
+		return
+	}
+	populateCheckoutOpts(&ptr.checkout_opts, opts.CheckoutOpts)
+	populateRemoteCallbacks(&ptr.remote_callbacks, opts.RemoteCallbacks)
+	if opts.Bare {
+		ptr.bare = 1
+	} else {
+		ptr.bare = 0
+	}
+	if opts.IgnoreCertErrors {
+		ptr.ignore_cert_errors = 1
+	} else {
+		ptr.ignore_cert_errors = 0
+	}
+}
diff --git a/clone_test.go b/clone_test.go
new file mode 100644
index 0000000..97366bf
--- /dev/null
+++ b/clone_test.go
@@ -0,0 +1,23 @@
+package git
+
+import (
+	"io/ioutil"
+	"os"
+	"testing"
+)
+
+func TestClone(t *testing.T) {
+
+	repo := createTestRepo(t)
+	defer os.RemoveAll(repo.Workdir())
+
+	seedTestRepo(t, repo)
+
+	path, err := ioutil.TempDir("", "git2go")
+	checkFatal(t, err)
+
+	_, err = Clone(repo.Path(), path, &CloneOptions{Bare: true})
+	defer os.RemoveAll(path)
+
+	checkFatal(t, err)
+}
diff --git a/commit.go b/commit.go
index 0edebb6..0a5cfce 100644
--- a/commit.go
+++ b/commit.go
@@ -17,56 +17,57 @@ import (
 // Commit
 type Commit struct {
 	gitObject
+	cast_ptr *C.git_commit
 }
 
 func (c Commit) Message() string {
-	return C.GoString(C.git_commit_message(c.ptr))
+	return C.GoString(C.git_commit_message(c.cast_ptr))
 }
 
 func (c Commit) Tree() (*Tree, error) {
-	var ptr *C.git_object
+	var ptr *C.git_tree
 
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
-	err := C.git_commit_tree(&ptr, c.ptr)
+	err := C.git_commit_tree(&ptr, c.cast_ptr)
 	if err < 0 {
 		return nil, MakeGitError(err)
 	}
 
-	return allocObject(ptr).(*Tree), nil
+	return allocObject((*C.git_object)(ptr)).(*Tree), nil
 }
 
 func (c Commit) TreeId() *Oid {
-	return newOidFromC(C.git_commit_tree_id(c.ptr))
+	return newOidFromC(C.git_commit_tree_id(c.cast_ptr))
 }
 
 func (c Commit) Author() *Signature {
-	ptr := C.git_commit_author(c.ptr)
-	return newSignatureFromC(ptr)
+	cast_ptr := C.git_commit_author(c.cast_ptr)
+	return newSignatureFromC(cast_ptr)
 }
 
 func (c Commit) Committer() *Signature {
-	ptr := C.git_commit_committer(c.ptr)
-	return newSignatureFromC(ptr)
+	cast_ptr := C.git_commit_committer(c.cast_ptr)
+	return newSignatureFromC(cast_ptr)
 }
 
 func (c *Commit) Parent(n uint) *Commit {
-	var cobj *C.git_object
-	ret := C.git_commit_parent(&cobj, c.ptr, C.uint(n))
+	var cobj *C.git_commit
+	ret := C.git_commit_parent(&cobj, c.cast_ptr, C.uint(n))
 	if ret != 0 {
 		return nil
 	}
 
-	return allocObject(cobj).(*Commit)
+	return allocObject((*C.git_object)(cobj)).(*Commit)
 }
 
 func (c *Commit) ParentId(n uint) *Oid {
-	return newOidFromC(C.git_commit_parent_id(c.ptr, C.uint(n)))
+	return newOidFromC(C.git_commit_parent_id(c.cast_ptr, C.uint(n)))
 }
 
 func (c *Commit) ParentCount() uint {
-	return uint(C.git_commit_parentcount(c.ptr))
+	return uint(C.git_commit_parentcount(c.cast_ptr))
 }
 
 // Signature
diff --git a/credentials.go b/credentials.go
new file mode 100644
index 0000000..c5ed055
--- /dev/null
+++ b/credentials.go
@@ -0,0 +1,74 @@
+package git
+
+/*
+#include <git2.h>
+#include <git2/errors.h>
+*/
+import "C"
+import "unsafe"
+
+type CredType uint
+
+const (
+	CredTypeUserpassPlaintext CredType = C.GIT_CREDTYPE_USERPASS_PLAINTEXT
+	CredTypeSshKey                     = C.GIT_CREDTYPE_SSH_KEY
+	CredTypeSshCustom                  = C.GIT_CREDTYPE_SSH_CUSTOM
+	CredTypeDefault                    = C.GIT_CREDTYPE_DEFAULT
+)
+
+type Cred struct {
+	ptr *C.git_cred
+}
+
+func (o *Cred) HasUsername() bool {
+	if C.git_cred_has_username(o.ptr) == 1 {
+		return true
+	}
+	return false
+}
+
+func (o *Cred) Type() CredType {
+	return (CredType)(o.ptr.credtype)
+}
+
+func credFromC(ptr *C.git_cred) *Cred {
+	return &Cred{ptr}
+}
+
+func NewCredUserpassPlaintext(username string, password string) (int, Cred) {
+	cred := Cred{}
+	cusername := C.CString(username)
+	defer C.free(unsafe.Pointer(cusername))
+	cpassword := C.CString(password)
+	defer C.free(unsafe.Pointer(cpassword))
+	ret := C.git_cred_userpass_plaintext_new(&cred.ptr, cusername, cpassword)
+	return int(ret), cred
+}
+
+func NewCredSshKey(username string, publickey string, privatekey string, passphrase string) (int, Cred) {
+	cred := Cred{}
+	cusername := C.CString(username)
+	defer C.free(unsafe.Pointer(cusername))
+	cpublickey := C.CString(publickey)
+	defer C.free(unsafe.Pointer(cpublickey))
+	cprivatekey := C.CString(privatekey)
+	defer C.free(unsafe.Pointer(cprivatekey))
+	cpassphrase := C.CString(passphrase)
+	defer C.free(unsafe.Pointer(cpassphrase))
+	ret := C.git_cred_ssh_key_new(&cred.ptr, cusername, cpublickey, cprivatekey, cpassphrase)
+	return int(ret), cred
+}
+
+func NewCredSshKeyFromAgent(username string) (int, Cred) {
+	cred := Cred{}
+	cusername := C.CString(username)
+	defer C.free(unsafe.Pointer(cusername))
+	ret := C.git_cred_ssh_key_from_agent(&cred.ptr, cusername)
+	return int(ret), cred
+}
+
+func NewCredDefault() (int, Cred) {
+	cred := Cred{}
+	ret := C.git_cred_default_new(&cred.ptr)
+	return int(ret), cred
+}
diff --git a/git.go b/git.go
index 7c76c30..8159244 100644
--- a/git.go
+++ b/git.go
@@ -8,10 +8,11 @@ package git
 import "C"
 import (
 	"bytes"
+	"encoding/hex"
 	"errors"
 	"runtime"
-	"unsafe"
 	"strings"
+	"unsafe"
 )
 
 const (
@@ -28,10 +29,8 @@ func init() {
 	C.git_threads_init()
 }
 
-// Oid
-type Oid struct {
-	bytes [20]byte
-}
+// Oid represents the id for a Git object.
+type Oid [20]byte
 
 func newOidFromC(coid *C.git_oid) *Oid {
 	if coid == nil {
@@ -39,62 +38,57 @@ func newOidFromC(coid *C.git_oid) *Oid {
 	}
 
 	oid := new(Oid)
-	copy(oid.bytes[0:20], C.GoBytes(unsafe.Pointer(coid), 20))
+	copy(oid[0:20], C.GoBytes(unsafe.Pointer(coid), 20))
 	return oid
 }
 
-func NewOid(b []byte) *Oid {
+func NewOidFromBytes(b []byte) *Oid {
 	oid := new(Oid)
-	copy(oid.bytes[0:20], b[0:20])
+	copy(oid[0:20], b[0:20])
 	return oid
 }
 
 func (oid *Oid) toC() *C.git_oid {
-	return (*C.git_oid)(unsafe.Pointer(&oid.bytes))
+	return (*C.git_oid)(unsafe.Pointer(oid))
 }
 
-func NewOidFromString(s string) (*Oid, error) {
-	o := new(Oid)
-	cs := C.CString(s)
-	defer C.free(unsafe.Pointer(cs))
+func NewOid(s string) (*Oid, error) {
+	if len(s) > C.GIT_OID_HEXSZ {
+		return nil, errors.New("string is too long for oid")
+	}
 
-	runtime.LockOSThread()
-	defer runtime.UnlockOSThread()
+	o := new(Oid)
 
-	if ret := C.git_oid_fromstr(o.toC(), cs); ret < 0 {
-		return nil, MakeGitError(ret)
+	slice, error := hex.DecodeString(s)
+	if error != nil {
+		return nil, error
 	}
 
+	copy(o[:], slice[:20])
 	return o, nil
 }
 
 func (oid *Oid) String() string {
-	buf := make([]byte, 40)
-	C.git_oid_fmt((*C.char)(unsafe.Pointer(&buf[0])), oid.toC())
-	return string(buf)
-}
-
-func (oid *Oid) Bytes() []byte {
-	return oid.bytes[0:]
+	return hex.EncodeToString(oid[:])
 }
 
 func (oid *Oid) Cmp(oid2 *Oid) int {
-	return bytes.Compare(oid.bytes[:], oid2.bytes[:])
+	return bytes.Compare(oid[:], oid2[:])
 }
 
 func (oid *Oid) Copy() *Oid {
 	ret := new(Oid)
-	copy(ret.bytes[:], oid.bytes[:])
+	copy(ret[:], oid[:])
 	return ret
 }
 
 func (oid *Oid) Equal(oid2 *Oid) bool {
-	return bytes.Equal(oid.bytes[:], oid2.bytes[:])
+	return bytes.Equal(oid[:], oid2[:])
 }
 
 func (oid *Oid) IsZero() bool {
-	for _, a := range oid.bytes {
-		if a != '0' {
+	for _, a := range oid {
+		if a != 0 {
 			return false
 		}
 	}
@@ -102,7 +96,7 @@ func (oid *Oid) IsZero() bool {
 }
 
 func (oid *Oid) NCmp(oid2 *Oid, n uint) int {
-	return bytes.Compare(oid.bytes[:n], oid2.bytes[:n])
+	return bytes.Compare(oid[:n], oid2[:n])
 }
 
 func ShortenOids(ids []*Oid, minlen int) (int, error) {
@@ -155,6 +149,10 @@ func MakeGitError(errorCode C.int) error {
 	return &GitError{C.GoString(err.message), int(err.klass), int(errorCode)}
 }
 
+func MakeGitError2(err int) error {
+	return MakeGitError(C.int(err))
+}
+
 func cbool(b bool) C.int {
 	if b {
 		return C.int(1)
diff --git a/git_test.go b/git_test.go
index 52aea1d..6542ca0 100644
--- a/git_test.go
+++ b/git_test.go
@@ -1,8 +1,8 @@
 package git
 
 import (
-	"testing"
 	"io/ioutil"
+	"testing"
 	"time"
 )
 
@@ -14,7 +14,17 @@ func createTestRepo(t *testing.T) *Repository {
 	checkFatal(t, err)
 
 	tmpfile := "README"
-	err = ioutil.WriteFile(path + "/" + tmpfile, []byte("foo\n"), 0644)
+	err = ioutil.WriteFile(path+"/"+tmpfile, []byte("foo\n"), 0644)
+	checkFatal(t, err)
+
+	return repo
+}
+
+func createBareTestRepo(t *testing.T) *Repository {
+	// figure out where we can create the test repo
+	path, err := ioutil.TempDir("", "git2go")
+	checkFatal(t, err)
+	repo, err := InitRepository(path, true)
 	checkFatal(t, err)
 
 	return repo
@@ -45,3 +55,10 @@ func seedTestRepo(t *testing.T, repo *Repository) (*Oid, *Oid) {
 	return commitId, treeId
 }
 
+func TestOidZero(t *testing.T) {
+	var zeroId Oid
+
+	if !zeroId.IsZero() {
+		t.Error("Zero Oid is not zero")
+	}
+}
diff --git a/index.go b/index.go
index 6da3c98..d3178a2 100644
--- a/index.go
+++ b/index.go
@@ -23,10 +23,43 @@ type IndexEntry struct {
 	Uid   uint
 	Gid   uint
 	Size  uint
-	Id   *Oid
+	Id    *Oid
 	Path  string
 }
 
+func newIndexEntryFromC(entry *C.git_index_entry) *IndexEntry {
+	if entry == nil {
+		return nil
+	}
+	return &IndexEntry{
+		time.Unix(int64(entry.ctime.seconds), int64(entry.ctime.nanoseconds)),
+		time.Unix(int64(entry.mtime.seconds), int64(entry.mtime.nanoseconds)),
+		uint(entry.mode),
+		uint(entry.uid),
+		uint(entry.gid),
+		uint(entry.file_size),
+		newOidFromC(&entry.id),
+		C.GoString(entry.path),
+	}
+}
+
+func populateCIndexEntry(source *IndexEntry, dest *C.git_index_entry) {
+	dest.ctime.seconds = C.git_time_t(source.Ctime.Unix())
+	dest.ctime.nanoseconds = C.uint(source.Ctime.UnixNano())
+	dest.mtime.seconds = C.git_time_t(source.Mtime.Unix())
+	dest.mtime.nanoseconds = C.uint(source.Mtime.UnixNano())
+	dest.mode = C.uint(source.Mode)
+	dest.uid = C.uint(source.Uid)
+	dest.gid = C.uint(source.Gid)
+	dest.file_size = C.git_off_t(source.Size)
+	dest.id = *source.Id.toC()
+	dest.path = C.CString(source.Path)
+}
+
+func freeCIndexEntry(entry *C.git_index_entry) {
+	C.free(unsafe.Pointer(entry.path))
+}
+
 func newIndexFromC(ptr *C.git_index) *Index {
 	idx := &Index{ptr}
 	runtime.SetFinalizer(idx, (*Index).Free)
@@ -48,6 +81,20 @@ func (v *Index) AddByPath(path string) error {
 	return nil
 }
 
+func (v *Index) WriteTreeTo(repo *Repository) (*Oid, error) {
+	oid := new(Oid)
+
+	runtime.LockOSThread()
+	defer runtime.UnlockOSThread()
+
+	ret := C.git_index_write_tree_to(oid.toC(), v.ptr, repo.ptr)
+	if ret < 0 {
+		return nil, MakeGitError(ret)
+	}
+
+	return oid, nil
+}
+
 func (v *Index) WriteTree() (*Oid, error) {
 	oid := new(Oid)
 
@@ -62,7 +109,7 @@ func (v *Index) WriteTree() (*Oid, error) {
 	return oid, nil
 }
 
-func (v *Index) Write() (error) {
+func (v *Index) Write() error {
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
@@ -83,19 +130,6 @@ func (v *Index) EntryCount() uint {
 	return uint(C.git_index_entrycount(v.ptr))
 }
 
-func newIndexEntryFromC(entry *C.git_index_entry) *IndexEntry {
-	return &IndexEntry{
-		time.Unix(int64(entry.ctime.seconds), int64(entry.ctime.nanoseconds)),
-		time.Unix(int64(entry.mtime.seconds), int64(entry.mtime.nanoseconds)),
-		uint(entry.mode),
-		uint(entry.uid),
-		uint(entry.gid),
-		uint(entry.file_size),
-		newOidFromC(&entry.id),
-		C.GoString(entry.path),
-	}
-}
-
 func (v *Index) EntryByIndex(index uint) (*IndexEntry, error) {
 	centry := C.git_index_get_byindex(v.ptr, C.size_t(index))
 	if centry == nil {
@@ -103,3 +137,145 @@ func (v *Index) EntryByIndex(index uint) (*IndexEntry, error) {
 	}
 	return newIndexEntryFromC(centry), nil
 }
+
+func (v *Index) HasConflicts() bool {
+	return C.git_index_has_conflicts(v.ptr) != 0
+}
+
+func (v *Index) CleanupConflicts() {
+	C.git_index_conflict_cleanup(v.ptr)
+}
+
+func (v *Index) AddConflict(ancestor *IndexEntry, our *IndexEntry, their *IndexEntry) error {
+
+	var cancestor *C.git_index_entry
+	var cour *C.git_index_entry
+	var ctheir *C.git_index_entry
+
+	if ancestor != nil {
+		cancestor = &C.git_index_entry{}
+		populateCIndexEntry(ancestor, cancestor)
+		defer freeCIndexEntry(cancestor)
+	}
+
+	if our != nil {
+		cour = &C.git_index_entry{}
+		populateCIndexEntry(our, cour)
+		defer freeCIndexEntry(cour)
+	}
+
+	if their != nil {
+		ctheir = &C.git_index_entry{}
+		populateCIndexEntry(their, ctheir)
+		defer freeCIndexEntry(ctheir)
+	}
+
+	runtime.LockOSThread()
+	defer runtime.UnlockOSThread()
+
+	ecode := C.git_index_conflict_add(v.ptr, cancestor, cour, ctheir)
+	if ecode < 0 {
+		return MakeGitError(ecode)
+	}
+	return nil
+}
+
+type IndexConflict struct {
+	Ancestor *IndexEntry
+	Our      *IndexEntry
+	Their    *IndexEntry
+}
+
+func (v *Index) GetConflict(path string) (IndexConflict, error) {
+
+	var cancestor *C.git_index_entry
+	var cour *C.git_index_entry
+	var ctheir *C.git_index_entry
+
+	cpath := C.CString(path)
+	defer C.free(unsafe.Pointer(cpath))
+
+	runtime.LockOSThread()
+	defer runtime.UnlockOSThread()
+
+	ecode := C.git_index_conflict_get(&cancestor, &cour, &ctheir, v.ptr, cpath)
+	if ecode < 0 {
+		return IndexConflict{}, MakeGitError(ecode)
+	}
+	return IndexConflict{
+		Ancestor: newIndexEntryFromC(cancestor),
+		Our:      newIndexEntryFromC(cour),
+		Their:    newIndexEntryFromC(ctheir),
+	}, nil
+}
+
+func (v *Index) RemoveConflict(path string) error {
+
+	cpath := C.CString(path)
+	defer C.free(unsafe.Pointer(cpath))
+
+	runtime.LockOSThread()
+	defer runtime.UnlockOSThread()
+
+	ecode := C.git_index_conflict_remove(v.ptr, cpath)
+	if ecode < 0 {
+		return MakeGitError(ecode)
+	}
+	return nil
+}
+
+type IndexConflictIterator struct {
+	ptr   *C.git_index_conflict_iterator
+	index *Index
+}
+
+func newIndexConflictIteratorFromC(index *Index, ptr *C.git_index_conflict_iterator) *IndexConflictIterator {
+	i := &IndexConflictIterator{ptr: ptr, index: index}
+	runtime.SetFinalizer(i, (*IndexConflictIterator).Free)
+	return i
+}
+
+func (v *IndexConflictIterator) Index() *Index {
+	return v.index
+}
+
+func (v *IndexConflictIterator) Free() {
+	runtime.SetFinalizer(v, nil)
+	C.git_index_conflict_iterator_free(v.ptr)
+}
+
+func (v *Index) ConflictIterator() (*IndexConflictIterator, error) {
+	var i *C.git_index_conflict_iterator
+
+	runtime.LockOSThread()
+	defer runtime.UnlockOSThread()
+
+	ecode := C.git_index_conflict_iterator_new(&i, v.ptr)
+	if ecode < 0 {
+		return nil, MakeGitError(ecode)
+	}
+	return newIndexConflictIteratorFromC(v, i), nil
+}
+
+func (v *IndexConflictIterator) Next() (IndexConflict, error) {
+	var cancestor *C.git_index_entry
+	var cour *C.git_index_entry
+	var ctheir *C.git_index_entry
+
+	runtime.LockOSThread()
+	defer runtime.UnlockOSThread()
+
+	ecode := C.git_index_conflict_next(&cancestor, &cour, &ctheir, v.ptr)
+	if ecode == C.GIT_ITEROVER {
+		return IndexConflict{}, ErrIterOver
+	}
+
+	if ecode < 0 {
+		return IndexConflict{}, MakeGitError(ecode)
+	}
+	return IndexConflict{
+		Ancestor: newIndexEntryFromC(cancestor),
+		Our:      newIndexEntryFromC(cour),
+		Their:    newIndexEntryFromC(ctheir),
+	}, nil
+}
diff --git a/index_test.go b/index_test.go
index 9828d0f..5920b93 100644
--- a/index_test.go
+++ b/index_test.go
@@ -22,6 +22,25 @@ func TestCreateRepoAndStage(t *testing.T) {
 	}
 }
 
+func TestIndexWriteTreeTo(t *testing.T) {
+	repo := createTestRepo(t)
+	defer os.RemoveAll(repo.Workdir())
+
+	repo2 := createTestRepo(t)
+	defer os.RemoveAll(repo.Workdir())
+
+	idx, err := repo.Index()
+	checkFatal(t, err)
+	err = idx.AddByPath("README")
+	checkFatal(t, err)
+	treeId, err := idx.WriteTreeTo(repo2)
+	checkFatal(t, err)
+
+	if treeId.String() != "b7119b11e8ef7a1a5a34d3ac87f5b075228ac81e" {
+		t.Fatalf("%v", treeId.String())
+	}
+}
+
 func checkFatal(t *testing.T, err error) {
 	if err == nil {
 		return
diff --git a/object.go b/object.go
index 090be1f..101d15e 100644
--- a/object.go
+++ b/object.go
@@ -48,7 +48,7 @@ func (t ObjectType) String() (string) {
 }
 
 func (o gitObject) Id() *Oid {
-	return newOidFromC(C.git_commit_id(o.ptr))
+	return newOidFromC(C.git_object_id(o.ptr))
 }
 
 func (o gitObject) Type() ObjectType {
@@ -57,24 +57,33 @@ func (o gitObject) Type() ObjectType {
 
 func (o *gitObject) Free() {
 	runtime.SetFinalizer(o, nil)
-	C.git_commit_free(o.ptr)
+	C.git_object_free(o.ptr)
 }
 
 func allocObject(cobj *C.git_object) Object {
 
 	switch ObjectType(C.git_object_type(cobj)) {
 	case ObjectCommit:
-		commit := &Commit{gitObject{cobj}}
+		commit := &Commit{
+			gitObject: gitObject{cobj},
+			cast_ptr:  (*C.git_commit)(cobj),
+		}
 		runtime.SetFinalizer(commit, (*Commit).Free)
 		return commit
 
 	case ObjectTree:
-		tree := &Tree{gitObject{cobj}}
+		tree := &Tree{
+			gitObject: gitObject{cobj},
+			cast_ptr:  (*C.git_tree)(cobj),
+		}
 		runtime.SetFinalizer(tree, (*Tree).Free)
 		return tree
 
 	case ObjectBlob:
-		blob := &Blob{gitObject{cobj}}
+		blob := &Blob{
+			gitObject: gitObject{cobj},
+			cast_ptr:  (*C.git_blob)(cobj),
+		}
 		runtime.SetFinalizer(blob, (*Blob).Free)
 		return blob
 	}
diff --git a/odb_test.go b/odb_test.go
index a4f8943..17b3ad2 100644
--- a/odb_test.go
+++ b/odb_test.go
@@ -27,7 +27,7 @@ func TestOdbStream(t *testing.T) {
 	error = stream.Close()
 	checkFatal(t, error)
 
-	expectedId, error := NewOidFromString("30f51a3fba5274d53522d0f19748456974647b4f")
+	expectedId, error := NewOid("30f51a3fba5274d53522d0f19748456974647b4f")
 	checkFatal(t, error)
 	if stream.Id.Cmp(expectedId) != 0 {
 		t.Fatal("Wrong data written")
@@ -59,4 +59,4 @@ Initial commit.`;
 	if oid.Cmp(coid) != 0 {
 		t.Fatal("Hash and write Oids are different")
 	}
-}
\ No newline at end of file
+}
diff --git a/push.go b/push.go
new file mode 100644
index 0000000..5fb7f07
--- /dev/null
+++ b/push.go
@@ -0,0 +1,182 @@
+package git
+
+/*
+#include <git2.h>
+#include <git2/errors.h>
+
+int _go_git_push_status_foreach(git_push *push, void *data);
+int _go_git_push_set_callbacks(git_push *push, void *packbuilder_progress_data, void *transfer_progress_data);
+
+*/
+import "C"
+import (
+	"runtime"
+	"unsafe"
+)
+
+type Push struct {
+	ptr *C.git_push
+
+	packbuilderProgress *PackbuilderProgressCallback
+	transferProgress    *PushTransferProgressCallback
+}
+
+func newPushFromC(cpush *C.git_push) *Push {
+	p := &Push{ptr: cpush}
+	runtime.SetFinalizer(p, (*Push).Free)
+	return p
+}
+
+func (p *Push) Free() {
+	runtime.SetFinalizer(p, nil)
+	C.git_push_free(p.ptr)
+}
+
+func (remote *Remote) NewPush() (*Push, error) {
+
+	runtime.LockOSThread()
+	defer runtime.UnlockOSThread()
+
+	var cpush *C.git_push
+	ret := C.git_push_new(&cpush, remote.ptr)
+	if ret < 0 {
+		return nil, MakeGitError(ret)
+	}
+	return newPushFromC(cpush), nil
+}
+
+func (p *Push) Finish() error {
+
+	runtime.LockOSThread()
+	defer runtime.UnlockOSThread()
+
+	ret := C.git_push_finish(p.ptr)
+	if ret < 0 {
+		return MakeGitError(ret)
+	}
+	return nil
+}
+
+func (p *Push) UnpackOk() bool {
+
+	ret := C.git_push_unpack_ok(p.ptr)
+	if ret == 0 {
+		return false
+	}
+	return true
+
+}
+
+func (p *Push) UpdateTips(sig *Signature, msg string) error {
+
+	var csig *C.git_signature = nil
+	if sig != nil {
+		csig = sig.toC()
+		defer C.free(unsafe.Pointer(csig))
+	}
+
+	var cmsg *C.char
+	if msg == "" {
+		cmsg = nil
+	} else {
+		cmsg = C.CString(msg)
+		defer C.free(unsafe.Pointer(cmsg))
+	}
+
+	runtime.LockOSThread()
+	defer runtime.UnlockOSThread()
+
+	ret := C.git_push_update_tips(p.ptr, csig, cmsg)
+	if ret < 0 {
+		return MakeGitError(ret)
+	}
+	return nil
+}
+
+func (p *Push) AddRefspec(refspec string) error {
+
+	crefspec := C.CString(refspec)
+	defer C.free(unsafe.Pointer(crefspec))
+
+	runtime.LockOSThread()
+	defer runtime.UnlockOSThread()
+
+	ret := C.git_push_add_refspec(p.ptr, crefspec)
+	if ret < 0 {
+		return MakeGitError(ret)
+	}
+	return nil
+}
+
+type PushOptions struct {
+	Version       uint
+	PbParallelism uint
+}
+
+func (p *Push) SetOptions(opts PushOptions) error {
+	copts := C.git_push_options{version: C.uint(opts.Version), pb_parallelism: C.uint(opts.PbParallelism)}
+
+	runtime.LockOSThread()
+	defer runtime.UnlockOSThread()
+
+	ret := C.git_push_set_options(p.ptr, &copts)
+	if ret < 0 {
+		return MakeGitError(ret)
+	}
+	return nil
+}
+
+type StatusForeachFunc func(ref string, msg string) int
+
+//export statusForeach
+func statusForeach(_ref *C.char, _msg *C.char, _data unsafe.Pointer) C.int {
+	ref := C.GoString(_ref)
+	msg := C.GoString(_msg)
+
+	cb := (*StatusForeachFunc)(_data)
+
+	return C.int((*cb)(ref, msg))
+}
+
+func (p *Push) StatusForeach(callback StatusForeachFunc) error {
+
+	runtime.LockOSThread()
+	defer runtime.UnlockOSThread()
+
+	ret := C._go_git_push_status_foreach(p.ptr, unsafe.Pointer(&callback))
+	if ret < 0 {
+		return MakeGitError(ret)
+	}
+	return nil
+
+}
+
+type PushCallbacks struct {
+	PackbuilderProgress *PackbuilderProgressCallback
+	TransferProgress    *PushTransferProgressCallback
+}
+
+type PackbuilderProgressCallback func(stage int, current uint, total uint) int
+type PushTransferProgressCallback func(current uint, total uint, bytes uint) int
+
+//export packbuilderProgress
+func packbuilderProgress(stage C.int, current C.uint, total C.uint, data unsafe.Pointer) C.int {
+	return C.int((*(*PackbuilderProgressCallback)(data))(int(stage), uint(current), uint(total)))
+}
+
+//export pushTransferProgress
+func pushTransferProgress(current C.uint, total C.uint, bytes C.size_t, data unsafe.Pointer) C.int {
+	return C.int((*(*PushTransferProgressCallback)(data))(uint(current), uint(total), uint(bytes)))
+}
+
+func (p *Push) SetCallbacks(callbacks PushCallbacks) {
+
+	runtime.LockOSThread()
+	defer runtime.UnlockOSThread()
+
+	// save callbacks so they don't get GC'd
+	p.packbuilderProgress = callbacks.PackbuilderProgress
+	p.transferProgress = callbacks.TransferProgress
+
+	C._go_git_push_set_callbacks(p.ptr, unsafe.Pointer(p.packbuilderProgress), unsafe.Pointer(p.transferProgress))
+}
diff --git a/push_test.go b/push_test.go
new file mode 100644
index 0000000..c1e6a22
--- /dev/null
+++ b/push_test.go
@@ -0,0 +1,59 @@
+package git
+
+import (
+	"log"
+	"os"
+	"testing"
+	"time"
+)
+
+func Test_Push_ToRemote(t *testing.T) {
+	repo := createBareTestRepo(t)
+	defer os.RemoveAll(repo.Path())
+	repo2 := createTestRepo(t)
+	defer os.RemoveAll(repo2.Workdir())
+
+	remote, err := repo2.CreateRemote("test_push", repo.Path())
+	checkFatal(t, err)
+
+	index, err := repo2.Index()
+	checkFatal(t, err)
+
+	index.AddByPath("README")
+
+	err = index.Write()
+	checkFatal(t, err)
+
+	newTreeId, err := index.WriteTree()
+	checkFatal(t, err)
+
+	tree, err := repo2.LookupTree(newTreeId)
+	checkFatal(t, err)
+
+	sig := &Signature{Name: "Rand Om Hacker", Email: "[email protected]", When: time.Now()}
+	// this should cause master branch to be created if it does not already exist
+	_, err = repo2.CreateCommit("HEAD", sig, sig, "message", tree)
+	checkFatal(t, err)
+
+	push, err := remote.NewPush()
+	checkFatal(t, err)
+
+	err = push.AddRefspec("refs/heads/master")
+	checkFatal(t, err)
+
+	err = push.Finish()
+	checkFatal(t, err)
+
+	err = push.StatusForeach(func(ref string, msg string) int {
+		log.Printf("%s -> %s", ref, msg)
+		return 0
+	})
+	checkFatal(t, err)
+
+	if !push.UnpackOk() {
+		t.Fatalf("unable to unpack")
+	}
+
+	defer remote.Free()
+	defer repo.Free()
+}
diff --git a/remote.go b/remote.go
new file mode 100644
index 0000000..eb5d7a7
--- /dev/null
+++ b/remote.go
@@ -0,0 +1,436 @@
+package git
+
+/*
+#include <git2.h>
+#include <git2/errors.h>
+
+extern void _go_git_setup_callbacks(git_remote_callbacks *callbacks);
+
+*/
+import "C"
+import "unsafe"
+import "runtime"
+
+type TransferProgress struct {
+	TotalObjects    uint
+	IndexedObjects  uint
+	ReceivedObjects uint
+	LocalObjects    uint
+	TotalDeltas     uint
+	ReceivedBytes   uint
+}
+
+func newTransferProgressFromC(c *C.git_transfer_progress) TransferProgress {
+	return TransferProgress{
+		TotalObjects:    uint(c.total_objects),
+		IndexedObjects:  uint(c.indexed_objects),
+		ReceivedObjects: uint(c.received_objects),
+		LocalObjects:    uint(c.local_objects),
+		TotalDeltas:     uint(c.total_deltas),
+		ReceivedBytes:   uint(c.received_bytes)}
+}
+
+type RemoteCompletion uint
+
+const (
+	RemoteCompletionDownload RemoteCompletion = C.GIT_REMOTE_COMPLETION_DOWNLOAD
+	RemoteCompletionIndexing                  = C.GIT_REMOTE_COMPLETION_INDEXING
+	RemoteCompletionError                     = C.GIT_REMOTE_COMPLETION_ERROR
+)
+
+type ProgressCallback func(str string) int
+type CompletionCallback func(RemoteCompletion) int
+type CredentialsCallback func(url string, username_from_url string, allowed_types CredType) (int, *Cred)
+type TransferProgressCallback func(stats TransferProgress) int
+type UpdateTipsCallback func(refname string, a *Oid, b *Oid) int
+
+type RemoteCallbacks struct {
+	ProgressCallback
+	CompletionCallback
+	CredentialsCallback
+	TransferProgressCallback
+	UpdateTipsCallback
+}
+
+type Remote struct {
+	ptr *C.git_remote
+}
+
+func populateRemoteCallbacks(ptr *C.git_remote_callbacks, callbacks *RemoteCallbacks) {
+	C.git_remote_init_callbacks(ptr, C.GIT_REMOTE_CALLBACKS_VERSION)
+	if callbacks == nil {
+		return
+	}
+	C._go_git_setup_callbacks(ptr)
+	ptr.payload = unsafe.Pointer(callbacks)
+}
+
+//export progressCallback
+func progressCallback(_str *C.char, _len C.int, data unsafe.Pointer) int {
+	callbacks := (*RemoteCallbacks)(data)
+	if callbacks.ProgressCallback == nil {
+		return 0
+	}
+	str := C.GoStringN(_str, _len)
+	return callbacks.ProgressCallback(str)
+}
+
+//export completionCallback
+func completionCallback(completion_type C.git_remote_completion_type, data unsafe.Pointer) int {
+	callbacks := (*RemoteCallbacks)(data)
+	if callbacks.CompletionCallback == nil {
+		return 0
+	}
+	return callbacks.CompletionCallback((RemoteCompletion)(completion_type))
+}
+
+//export credentialsCallback
+func credentialsCallback(_cred **C.git_cred, _url *C.char, _username_from_url *C.char, allowed_types uint, data unsafe.Pointer) int {
+	callbacks := (*RemoteCallbacks)(data)
+	if callbacks.CredentialsCallback == nil {
+		return 0
+	}
+	url := C.GoString(_url)
+	username_from_url := C.GoString(_username_from_url)
+	ret, cred := callbacks.CredentialsCallback(url, username_from_url, (CredType)(allowed_types))
+	*_cred = cred.ptr
+	return ret
+}
+
+//export transferProgressCallback
+func transferProgressCallback(stats *C.git_transfer_progress, data unsafe.Pointer) int {
+	callbacks := (*RemoteCallbacks)(data)
+	if callbacks.TransferProgressCallback == nil {
+		return 0
+	}
+	return callbacks.TransferProgressCallback(newTransferProgressFromC(stats))
+}
+
+//export updateTipsCallback
+func updateTipsCallback(_refname *C.char, _a *C.git_oid, _b *C.git_oid, data unsafe.Pointer) int {
+	callbacks := (*RemoteCallbacks)(data)
+	if callbacks.UpdateTipsCallback == nil {
+		return 0
+	}
+	refname := C.GoString(_refname)
+	a := newOidFromC(_a)
+	b := newOidFromC(_b)
+	return callbacks.UpdateTipsCallback(refname, a, b)
+}
+
+func RemoteIsValidName(name string) bool {
+	cname := C.CString(name)
+	defer C.free(unsafe.Pointer(cname))
+	if C.git_remote_is_valid_name(cname) == 1 {
+		return true
+	}
+	return false
+}
+
+func (r *Remote) Free() {
+	runtime.SetFinalizer(r, nil)
+	C.git_remote_free(r.ptr)
+}
+
+func (repo *Repository) ListRemotes() ([]string, error) {
+	var r C.git_strarray
+	ecode := C.git_remote_list(&r, repo.ptr)
+	if ecode < 0 {
+		return nil, MakeGitError(ecode)
+	}
+	defer C.git_strarray_free(&r)
+
+	remotes := makeStringsFromCStrings(r.strings, int(r.count))
+	return remotes, nil
+}
+
+func (repo *Repository) CreateRemote(name string, url string) (*Remote, error) {
+	remote := &Remote{}
+
+	cname := C.CString(name)
+	defer C.free(unsafe.Pointer(cname))
+	curl := C.CString(url)
+	defer C.free(unsafe.Pointer(curl))
+
+	runtime.LockOSThread()
+	defer runtime.UnlockOSThread()
+
+	ret := C.git_remote_create(&remote.ptr, repo.ptr, cname, curl)
+	if ret < 0 {
+		return nil, MakeGitError(ret)
+	}
+	runtime.SetFinalizer(remote, (*Remote).Free)
+	return remote, nil
+}
+
+func (repo *Repository) CreateRemoteWithFetchspec(name string, url string, fetch string) (*Remote, error) {
+	remote := &Remote{}
+
+	cname := C.CString(name)
+	defer C.free(unsafe.Pointer(cname))
+	curl := C.CString(url)
+	defer C.free(unsafe.Pointer(curl))
+	cfetch := C.CString(fetch)
+	defer C.free(unsafe.Pointer(cfetch))
+
+	runtime.LockOSThread()
+	defer runtime.UnlockOSThread()
+
+	ret := C.git_remote_create_with_fetchspec(&remote.ptr, repo.ptr, cname, curl, cfetch)
+	if ret < 0 {
+		return nil, MakeGitError(ret)
+	}
+	runtime.SetFinalizer(remote, (*Remote).Free)
+	return remote, nil
+}
+
+func (repo *Repository) CreateAnonymousRemote(url, fetch string) (*Remote, error) {
+	remote := &Remote{}
+
+	curl := C.CString(url)
+	defer C.free(unsafe.Pointer(curl))
+	cfetch := C.CString(fetch)
+	defer C.free(unsafe.Pointer(cfetch))
+
+	runtime.LockOSThread()
+	defer runtime.UnlockOSThread()
+
+	ret := C.git_remote_create_anonymous(&remote.ptr, repo.ptr, curl, cfetch)
+	if ret < 0 {
+		return nil, MakeGitError(ret)
+	}
+	runtime.SetFinalizer(remote, (*Remote).Free)
+	return remote, nil
+}
+
+func (repo *Repository) LoadRemote(name string) (*Remote, error) {
+	remote := &Remote{}
+
+	cname := C.CString(name)
+	defer C.free(unsafe.Pointer(cname))
+
+	runtime.LockOSThread()
+	defer runtime.UnlockOSThread()
+
+	ret := C.git_remote_load(&remote.ptr, repo.ptr, cname)
+	if ret < 0 {
+		return nil, MakeGitError(ret)
+	}
+	runtime.SetFinalizer(remote, (*Remote).Free)
+	return remote, nil
+}
+
+func (o *Remote) Save() error {
+
+	runtime.LockOSThread()
+	defer runtime.UnlockOSThread()
+
+	ret := C.git_remote_save(o.ptr)
+	if ret < 0 {
+		return MakeGitError(ret)
+	}
+	return nil
+}
+
+func (o *Remote) Owner() Repository {
+	return Repository{C.git_remote_owner(o.ptr)}
+}
+
+func (o *Remote) Name() string {
+	return C.GoString(C.git_remote_name(o.ptr))
+}
+
+func (o *Remote) Url() string {
+	return C.GoString(C.git_remote_url(o.ptr))
+}
+
+func (o *Remote) PushUrl() string {
+	return C.GoString(C.git_remote_pushurl(o.ptr))
+}
+
+func (o *Remote) SetUrl(url string) error {
+	curl := C.CString(url)
+	defer C.free(unsafe.Pointer(curl))
+
+	runtime.LockOSThread()
+	defer runtime.UnlockOSThread()
+
+	ret := C.git_remote_set_url(o.ptr, curl)
+	if ret < 0 {
+		return MakeGitError(ret)
+	}
+	return nil
+}
+
+func (o *Remote) SetPushUrl(url string) error {
+	curl := C.CString(url)
+	defer C.free(unsafe.Pointer(curl))
+
+	runtime.LockOSThread()
+	defer runtime.UnlockOSThread()
+
+	ret := C.git_remote_set_pushurl(o.ptr, curl)
+	if ret < 0 {
+		return MakeGitError(ret)
+	}
+	return nil
+}
+
+func (o *Remote) AddFetch(refspec string) error {
+	crefspec := C.CString(refspec)
+	defer C.free(unsafe.Pointer(crefspec))
+
+	runtime.LockOSThread()
+	defer runtime.UnlockOSThread()
+
+	ret := C.git_remote_add_fetch(o.ptr, crefspec)
+	if ret < 0 {
+		return MakeGitError(ret)
+	}
+	return nil
+}
+
+func sptr(p uintptr) *C.char {
+	return *(**C.char)(unsafe.Pointer(p))
+}
+
+func makeStringsFromCStrings(x **C.char, l int) []string {
+	s := make([]string, l)
+	i := 0
+	for p := uintptr(unsafe.Pointer(x)); i < l; p += unsafe.Sizeof(uintptr(0)) {
+		s[i] = C.GoString(sptr(p))
+		i++
+	}
+	return s
+}
+
+func makeCStringsFromStrings(s []string) **C.char {
+	l := len(s)
+	x := (**C.char)(C.malloc(C.size_t(unsafe.Sizeof(unsafe.Pointer(nil)) * uintptr(l))))
+	i := 0
+	for p := uintptr(unsafe.Pointer(x)); i < l; p += unsafe.Sizeof(uintptr(0)) {
+		*(**C.char)(unsafe.Pointer(p)) = C.CString(s[i])
+		i++
+	}
+	return x
+}
+
+func freeStrarray(arr *C.git_strarray) {
+	count := int(arr.count)
+	size := unsafe.Sizeof(unsafe.Pointer(nil))
+
+	i := 0
+	for p := uintptr(unsafe.Pointer(arr.strings)); i < count; p += size {
+		C.free(unsafe.Pointer(sptr(p)))
+		i++
+	}
+
+	C.free(unsafe.Pointer(arr.strings))
+}
+
+func (o *Remote) FetchRefspecs() ([]string, error) {
+	crefspecs := C.git_strarray{}
+
+	runtime.LockOSThread()
+	defer runtime.UnlockOSThread()
+
+	ret := C.git_remote_get_fetch_refspecs(&crefspecs, o.ptr)
+	if ret < 0 {
+		return nil, MakeGitError(ret)
+	}
+	defer C.git_strarray_free(&crefspecs)
+
+	refspecs := makeStringsFromCStrings(crefspecs.strings, int(crefspecs.count))
+	return refspecs, nil
+}
+
+func (o *Remote) SetFetchRefspecs(refspecs []string) error {
+	crefspecs := C.git_strarray{}
+	crefspecs.count = C.size_t(len(refspecs))
+	crefspecs.strings = makeCStringsFromStrings(refspecs)
+	defer freeStrarray(&crefspecs)
+
+	runtime.LockOSThread()
+	defer runtime.UnlockOSThread()
+
+	ret := C.git_remote_set_fetch_refspecs(o.ptr, &crefspecs)
+	if ret < 0 {
+		return MakeGitError(ret)
+	}
+	return nil
+}
+
+func (o *Remote) AddPush(refspec string) error {
+	crefspec := C.CString(refspec)
+	defer C.free(unsafe.Pointer(crefspec))
+
+	runtime.LockOSThread()
+	defer runtime.UnlockOSThread()
+
+	ret := C.git_remote_add_push(o.ptr, crefspec)
+	if ret < 0 {
+		return MakeGitError(ret)
+	}
+	return nil
+}
+
+func (o *Remote) PushRefspecs() ([]string, error) {
+	crefspecs := C.git_strarray{}
+
+	runtime.LockOSThread()
+	defer runtime.UnlockOSThread()
+
+	ret := C.git_remote_get_push_refspecs(&crefspecs, o.ptr)
+	if ret < 0 {
+		return nil, MakeGitError(ret)
+	}
+	defer C.git_strarray_free(&crefspecs)
+	refspecs := makeStringsFromCStrings(crefspecs.strings, int(crefspecs.count))
+	return refspecs, nil
+}
+
+func (o *Remote) SetPushRefspecs(refspecs []string) error {
+	crefspecs := C.git_strarray{}
+	crefspecs.count = C.size_t(len(refspecs))
+	crefspecs.strings = makeCStringsFromStrings(refspecs)
+	defer freeStrarray(&crefspecs)
+
+	runtime.LockOSThread()
+	defer runtime.UnlockOSThread()
+
+	ret := C.git_remote_set_push_refspecs(o.ptr, &crefspecs)
+	if ret < 0 {
+		return MakeGitError(ret)
+	}
+	return nil
+}
+
+func (o *Remote) ClearRefspecs() {
+	C.git_remote_clear_refspecs(o.ptr)
+}
+
+func (o *Remote) RefspecCount() uint {
+	return uint(C.git_remote_refspec_count(o.ptr))
+}
+
+func (o *Remote) Fetch(sig *Signature, msg string) error {
+
+	var csig *C.git_signature = nil
+	if sig != nil {
+		csig = sig.toC()
+		defer C.free(unsafe.Pointer(csig))
+	}
+
+	var cmsg *C.char
+	if msg == "" {
+		cmsg = nil
+	} else {
+		cmsg = C.CString(msg)
+		defer C.free(unsafe.Pointer(cmsg))
+	}
+	ret := C.git_remote_fetch(o.ptr, csig, cmsg)
+	if ret < 0 {
+		return MakeGitError(ret)
+	}
+	return nil
+}
diff --git a/remote_test.go b/remote_test.go
new file mode 100644
index 0000000..7cef1ec
--- /dev/null
+++ b/remote_test.go
@@ -0,0 +1,47 @@
+package git
+
+import (
+	"os"
+	"testing"
+)
+
+func TestRefspecs(t *testing.T) {
+	repo := createTestRepo(t)
+	defer os.RemoveAll(repo.Workdir())
+	defer repo.Free()
+
+	remote, err := repo.CreateAnonymousRemote("git://foo/bar", "refs/heads/*:refs/heads/*")
+	checkFatal(t, err)
+
+	expected := []string{
+		"refs/heads/*:refs/remotes/origin/*",
+		"refs/pull/*/head:refs/remotes/origin/*",
+	}
+
+	err = remote.SetFetchRefspecs(expected)
+	checkFatal(t, err)
+
+	actual, err := remote.FetchRefspecs()
+	checkFatal(t, err)
+
+	compareStringList(t, expected, actual)
+}
+
+func TestListRemotes(t *testing.T) {
+	repo := createTestRepo(t)
+	defer os.RemoveAll(repo.Workdir())
+	defer repo.Free()
+
+	_, err := repo.CreateRemote("test", "git://foo/bar")
+
+	checkFatal(t, err)
+
+	expected := []string{
+		"test",
+	}
+
+	actual, err := repo.ListRemotes()
+	checkFatal(t, err)
+
+	compareStringList(t, expected, actual)
+}
diff --git a/repository.go b/repository.go
index d6eadc8..d757747 100644
--- a/repository.go
+++ b/repository.go
@@ -239,7 +239,7 @@ func (v *Repository) CreateCommit(
 	if nparents > 0 {
 		cparents = make([]*C.git_commit, nparents)
 		for i, v := range parents {
-			cparents[i] = v.ptr
+			cparents[i] = v.cast_ptr
 		}
 		parentsarg = &cparents[0]
 	}
@@ -256,7 +256,7 @@ func (v *Repository) CreateCommit(
 	ret := C.git_commit_create(
 		oid.toC(), v.ptr, cref,
 		authorSig, committerSig,
-		nil, cmsg, tree.ptr, C.size_t(nparents), parentsarg)
+		nil, cmsg, tree.cast_ptr, C.size_t(nparents), parentsarg)
 
 	if ret < 0 {
 		return nil, MakeGitError(ret)
@@ -331,7 +331,7 @@ func (v *Repository) TreeBuilderFromTree(tree *Tree) (*TreeBuilder, error) {
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
-	if ret := C.git_treebuilder_create(&bld.ptr, tree.ptr); ret < 0 {
+	if ret := C.git_treebuilder_create(&bld.ptr, tree.cast_ptr); ret < 0 {
 		return nil, MakeGitError(ret)
 	}
 	runtime.SetFinalizer(bld, (*TreeBuilder).Free)
diff --git a/script/build-libgit2.sh b/script/build-libgit2.sh
index aa43df5..8376a15 100755
--- a/script/build-libgit2.sh
+++ b/script/build-libgit2.sh
@@ -11,7 +11,3 @@ cmake -DTHREADSAFE=ON \
       .
 
 make install
-
-# Let the Go build system know where to find libgit2
-export LD_LIBRARY_PATH="$TMPDIR/libgit2/install/lib"
-export PKG_CONFIG_PATH="$TMPDIR/libgit2/install/lib/pkgconfig"
diff --git a/settings/settings.go b/settings/settings.go
new file mode 100644
index 0000000..6661c5d
--- /dev/null
+++ b/settings/settings.go
@@ -0,0 +1,109 @@
+package settings
+
+/*
+#cgo pkg-config: libgit2
+#include <git2.h>
+
+int _go_git_opts_get_search_path(int level, git_buf *buf)
+{
+    return git_libgit2_opts(GIT_OPT_GET_SEARCH_PATH, level, buf);
+}
+
+int _go_git_opts_set_search_path(int level, const char *path)
+{
+    return git_libgit2_opts(GIT_OPT_SET_SEARCH_PATH, level, path);
+}
+
+int _go_git_opts_set_size_t(int opt, size_t val)
+{
+    return git_libgit2_opts(opt, val);
+}
+
+int _go_git_opts_get_size_t(int opt, size_t *val)
+{
+    return git_libgit2_opts(opt, val);
+}
+
+*/
+import "C"
+import (
+	"runtime"
+	"unsafe"
+	"github.com/libgit2/git2go"
+)
+
+func MakeGitError(err C.int) error {
+	return git.MakeGitError2(int(err))
+}
+
+func SearchPath(level git.ConfigLevel) (string, error) {
+	var buf C.git_buf
+	defer C.git_buf_free(&buf)
+
+	runtime.LockOSThread()
+	defer runtime.UnlockOSThread()
+
+	err := C._go_git_opts_get_search_path(C.int(level), &buf)
+	if err < 0 {
+		return "", MakeGitError(err)
+	}
+
+	return C.GoString(buf.ptr), nil
+}
+
+func SetSearchPath(level git.ConfigLevel, path string) error {
+	cpath := C.CString(path)
+	defer C.free(unsafe.Pointer(cpath))
+
+	runtime.LockOSThread()
+	defer runtime.UnlockOSThread()
+
+	err := C._go_git_opts_set_search_path(C.int(level), cpath)
+	if err < 0 {
+		return MakeGitError(err)
+	}
+
+	return nil
+}
+
+func getSizet(opt C.int) (int, error) {
+	runtime.LockOSThread()
+	defer runtime.UnlockOSThread()
+
+	var val C.size_t
+	err := C._go_git_opts_get_size_t(opt, &val);
+	if err < 0 {
+		return 0, MakeGitError(err)
+	}
+
+	return int(val), nil
+}
+
+func setSizet(opt C.int, val int) error {
+	runtime.LockOSThread()
+	defer runtime.UnlockOSThread()
+
+	cval := C.size_t(val)
+	err := C._go_git_opts_set_size_t(opt, cval);
+	if err < 0 {
+		return MakeGitError(err)
+	}
+
+	return nil
+}
+
+func MwindowSize() (int, error) {
+	return getSizet(C.GIT_OPT_GET_MWINDOW_SIZE)
+}
+
+func SetMwindowSize(size int) error {
+	return setSizet(C.GIT_OPT_SET_MWINDOW_SIZE, size)
+}
+
+func MwindowMappedLimit() (int, error) {
+	return getSizet(C.GIT_OPT_GET_MWINDOW_MAPPED_LIMIT)
+}
+
+func SetMwindowMappedLimit(size int) error {
+	return setSizet(C.GIT_OPT_SET_MWINDOW_MAPPED_LIMIT, size)
+}
diff --git a/settings/settings_test.go b/settings/settings_test.go
new file mode 100644
index 0000000..55b08c8
--- /dev/null
+++ b/settings/settings_test.go
@@ -0,0 +1,66 @@
+package settings
+
+import (
+	"testing"
+	"runtime"
+	"github.com/libgit2/git2go"
+)
+
+type pathPair struct {
+	Level git.ConfigLevel
+	Path  string
+}
+
+func TestSearchPath(t *testing.T) {
+	paths := []pathPair{
+		pathPair{git.ConfigLevelSystem, "/tmp/system"},
+		pathPair{git.ConfigLevelGlobal, "/tmp/global"},
+		pathPair{git.ConfigLevelXDG, "/tmp/xdg"},
+	}
+
+	for _, pair := range paths {
+		err := SetSearchPath(pair.Level, pair.Path)
+		checkFatal(t, err)
+
+		actual, err := SearchPath(pair.Level)
+		checkFatal(t, err)
+
+		if pair.Path != actual {
+			t.Fatal("Search paths don't match")
+		}
+	}
+}
+
+func TestMmapSizes(t *testing.T) {
+	size := 42 * 1024
+
+	err := SetMwindowSize(size)
+	checkFatal(t, err)
+
+	actual, err := MwindowSize()
+	if size != actual {
+		t.Fatal("Sizes don't match")
+	}
+
+	err = SetMwindowMappedLimit(size)
+	checkFatal(t, err)
+
+	actual, err = MwindowMappedLimit()
+	if size != actual {
+		t.Fatal("Sizes don't match")
+	}
+}
+
+func checkFatal(t *testing.T, err error) {
+	if err == nil {
+		return
+	}
+
+	// The failure happens at wherever we were called, not here
+	_, file, line, ok := runtime.Caller(1)
+	if !ok {
+		t.Fatal()
+	}
+
+	t.Fatalf("Fail at %v:%v; %v", file, line, err)
+}
diff --git a/submodule.go b/submodule.go
index dcc4723..f6ab5e1 100644
--- a/submodule.go
+++ b/submodule.go
@@ -238,7 +238,7 @@ func (sub *Submodule) SetUpdate(update SubmoduleUpdate) SubmoduleUpdate {
 }
 
 func (sub *Submodule) FetchRecurseSubmodules() SubmoduleRecurse {
-	return SubmoduleRecurse(C.git_submodule_fetch_recurse_submodules(sub.ptr));
+	return SubmoduleRecurse(C.git_submodule_fetch_recurse_submodules(sub.ptr))
 }
 
 func (sub *Submodule) SetFetchRecurseSubmodules(recurse SubmoduleRecurse) error {
@@ -287,22 +287,22 @@ func (sub *Submodule) Open() (*Repository, error) {
 	return repo, nil
 }
 
-func (sub *Submodule) Reload() error {
+func (sub *Submodule) Reload(force bool) error {
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
-	ret := C.git_submodule_reload(sub.ptr)
+	ret := C.git_submodule_reload(sub.ptr, cbool(force))
 	if ret < 0 {
 		return MakeGitError(ret)
 	}
 	return nil
 }
 
-func (repo *Repository) ReloadAllSubmodules() error {
+func (repo *Repository) ReloadAllSubmodules(force bool) error {
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
-	ret := C.git_submodule_reload_all(repo.ptr)
+	ret := C.git_submodule_reload_all(repo.ptr, cbool(force))
 	if ret < 0 {
 		return MakeGitError(ret)
 	}
diff --git a/tree.go b/tree.go
index 7070ac7..8356fba 100644
--- a/tree.go
+++ b/tree.go
@@ -26,6 +26,7 @@ const (
 
 type Tree struct {
 	gitObject
+	cast_ptr *C.git_tree
 }
 
 type TreeEntry struct {
@@ -48,7 +49,7 @@ func (t Tree) EntryByName(filename string) *TreeEntry {
 	cname := C.CString(filename)
 	defer C.free(unsafe.Pointer(cname))
 
-	entry := C.git_tree_entry_byname(t.ptr, cname)
+	entry := C.git_tree_entry_byname(t.cast_ptr, cname)
 	if entry == nil {
 		return nil
 	}
@@ -66,7 +67,7 @@ func (t Tree) EntryByPath(path string) (*TreeEntry, error) {
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
-	ret := C.git_tree_entry_bypath(&entry, t.ptr, cpath)
+	ret := C.git_tree_entry_bypath(&entry, t.cast_ptr, cpath)
 	if ret < 0 {
 		return nil, MakeGitError(ret)
 	}
@@ -75,7 +76,7 @@ func (t Tree) EntryByPath(path string) (*TreeEntry, error) {
 }
 
 func (t Tree) EntryByIndex(index uint64) *TreeEntry {
-	entry := C.git_tree_entry_byindex(t.ptr, C.size_t(index))
+	entry := C.git_tree_entry_byindex(t.cast_ptr, C.size_t(index))
 	if entry == nil {
 		return nil
 	}
@@ -84,7 +85,7 @@ func (t Tree) EntryByIndex(index uint64) *TreeEntry {
 }
 
 func (t Tree) EntryCount() uint64 {
-	num := C.git_tree_entrycount(t.ptr)
+	num := C.git_tree_entrycount(t.cast_ptr)
 	return uint64(num)
 }
 
@@ -104,7 +105,7 @@ func (t Tree) Walk(callback TreeWalkCallback) error {
 	defer runtime.UnlockOSThread()
 
 	err := C._go_git_treewalk(
-		t.ptr,
+		t.cast_ptr,
 		C.GIT_TREEWALK_PRE,
 		unsafe.Pointer(&callback),
 	)
diff --git a/walk.go b/walk.go
index 71df7bb..f7c147d 100644
--- a/walk.go
+++ b/walk.go
@@ -9,6 +9,7 @@ import "C"
 import (
 	"io"
 	"runtime"
+	"unsafe"
 )
 
 // RevWalk
@@ -37,8 +38,57 @@ func (v *RevWalk) Reset() {
 	C.git_revwalk_reset(v.ptr)
 }
 
-func (v *RevWalk) Push(id *Oid) {
-	C.git_revwalk_push(v.ptr, id.toC())
+func (v *RevWalk) Push(id *Oid) error {
+	runtime.LockOSThread()
+	defer runtime.UnlockOSThread()
+
+	ecode := C.git_revwalk_push(v.ptr, id.toC())
+	if ecode < 0 {
+		return MakeGitError(ecode)
+	}
+	return nil
+}
+
+func (v *RevWalk) PushGlob(glob string) error {
+	runtime.LockOSThread()
+	defer runtime.UnlockOSThread()
+
+	cstr := C.CString(glob)
+	defer C.free(unsafe.Pointer(cstr))
+
+	ecode := C.git_revwalk_push_glob(v.ptr, cstr)
+	if ecode < 0 {
+		return MakeGitError(ecode)
+	}
+	return nil
+}
+
+func (v *RevWalk) PushRange(r string) error {
+	runtime.LockOSThread()
+	defer runtime.UnlockOSThread()
+
+	cstr := C.CString(r)
+	defer C.free(unsafe.Pointer(cstr))
+
+	ecode := C.git_revwalk_push_range(v.ptr, cstr)
+	if ecode < 0 {
+		return MakeGitError(ecode)
+	}
+	return nil
+}
+
+func (v *RevWalk) PushRef(r string) error {
+	runtime.LockOSThread()
+	defer runtime.UnlockOSThread()
+
+	cstr := C.CString(r)
+	defer C.free(unsafe.Pointer(cstr))
+
+	ecode := C.git_revwalk_push_ref(v.ptr, cstr)
+	if ecode < 0 {
+		return MakeGitError(ecode)
+	}
+	return nil
 }
 
 func (v *RevWalk) PushHead() (err error) {
@@ -49,8 +99,57 @@ func (v *RevWalk) PushHead() (err error) {
 	if ecode < 0 {
 		err = MakeGitError(ecode)
 	}
+	return nil
+}
 
-	return
+func (v *RevWalk) Hide(id *Oid) error {
+	runtime.LockOSThread()
+	defer runtime.UnlockOSThread()
+
+	ecode := C.git_revwalk_hide(v.ptr, id.toC())
+	if ecode < 0 {
+		return MakeGitError(ecode)
+	}
+	return nil
+}
+
+func (v *RevWalk) HideGlob(glob string) error {
+	runtime.LockOSThread()
+	defer runtime.UnlockOSThread()
+
+	cstr := C.CString(glob)
+	defer C.free(unsafe.Pointer(cstr))
+
+	ecode := C.git_revwalk_hide_glob(v.ptr, cstr)
+	if ecode < 0 {
+		return MakeGitError(ecode)
+	}
+	return nil
+}
+
+func (v *RevWalk) HideRef(r string) error {
+	runtime.LockOSThread()
+	defer runtime.UnlockOSThread()
+
+	cstr := C.CString(r)
+	defer C.free(unsafe.Pointer(cstr))
+
+	ecode := C.git_revwalk_hide_ref(v.ptr, cstr)
+	if ecode < 0 {
+		return MakeGitError(ecode)
+	}
+	return nil
+}
+
+func (v *RevWalk) HideHead() (err error) {
+	runtime.LockOSThread()
+	defer runtime.UnlockOSThread()
+
+	ecode := C.git_revwalk_hide_head(v.ptr)
+	if ecode < 0 {
+		err = MakeGitError(ecode)
+	}
+	return nil
 }
 
 func (v *RevWalk) Next(id *Oid) (err error) {
diff --git a/wrapper.c b/wrapper.c
index 4ce4c5c..0fa6c48 100644
--- a/wrapper.c
+++ b/wrapper.c
@@ -25,6 +25,31 @@ int _go_git_odb_foreach(git_odb *db, void *payload)
     return git_odb_foreach(db, (git_odb_foreach_cb)&odbForEachCb, payload);
 }
 
+void _go_git_setup_callbacks(git_remote_callbacks *callbacks) {
+	typedef int (*progress_cb)(const char *str, int len, void *data);
+	typedef int (*completion_cb)(git_remote_completion_type type, void *data);
+	typedef int (*credentials_cb)(git_cred **cred, const char *url, const char *username_from_url, unsigned int allowed_types,	void *data);
+	typedef int (*transfer_progress_cb)(const git_transfer_progress *stats, void *data);
+	typedef int (*update_tips_cb)(const char *refname, const git_oid *a, const git_oid *b, void *data);
+	callbacks->progress = (progress_cb)progressCallback;
+	callbacks->completion = (completion_cb)completionCallback;
+	callbacks->credentials = (credentials_cb)credentialsCallback;
+	callbacks->transfer_progress = (transfer_progress_cb)transferProgressCallback;
+	callbacks->update_tips = (update_tips_cb)updateTipsCallback;
+}
+
+typedef int (*status_foreach_cb)(const char *ref, const char *msg, void *data);
+
+int _go_git_push_status_foreach(git_push *push, void *data)
+{
+	return git_push_status_foreach(push, (status_foreach_cb)statusForeach, data);
+}
+
+int _go_git_push_set_callbacks(git_push *push, void *packbuilder_progress_data, void *transfer_progress_data)
+{
+	return git_push_set_callbacks(push, packbuilderProgress, packbuilder_progress_data, pushTransferProgress, transfer_progress_data);
+}
+
 int _go_blob_chunk_cb(char *buffer, size_t maxLen, void *payload)
 {
     return blobChunkCb(buffer, maxLen, payload);