git_signature *git_signature_new(const char *name, const char *email, git_time_t time, int offset)
{
git_signature *p = NULL;
if ((p = git__malloc(sizeof(git_signature))) == NULL)
goto cleanup;
p->name = git__strdup(name);
p->email = git__strdup(email);
p->when.time = time;
p->when.offset = offset;
if (p->name == NULL || p->email == NULL)
goto cleanup;
return p;
cleanup:
git_signature_free(p);
return NULL;
}
int git__compress(git_buf *buf, const void *buff, size_t len)
{
z_stream zs;
char *zb;
size_t have;
memset(&zs, 0, sizeof(zs));
if (deflateInit(&zs, Z_DEFAULT_COMPRESSION) != Z_OK)
return -1;
zb = git__malloc(BUFFER_SIZE);
GITERR_CHECK_ALLOC(zb);
zs.next_in = (void *)buff;
zs.avail_in = (uInt)len;
do {
zs.next_out = (unsigned char *)zb;
zs.avail_out = BUFFER_SIZE;
if (deflate(&zs, Z_FINISH) == Z_STREAM_ERROR) {
git__free(zb);
return -1;
}
have = BUFFER_SIZE - (size_t)zs.avail_out;
if (git_buf_put(buf, zb, have) < 0) {
git__free(zb);
return -1;
}
} while (zs.avail_out == 0);
assert(zs.avail_in == 0);
deflateEnd(&zs);
git__free(zb);
return 0;
}
int git_treebuilder_insert(git_tree_entry **entry_out, git_treebuilder *bld, const char *filename, const git_oid *id, unsigned int attributes)
{
git_tree_entry *entry;
int pos;
assert(bld && id && filename);
if (!valid_attributes(attributes))
return GIT_ERROR;
if ((pos = git_vector_bsearch2(&bld->entries, entry_search_cmp, filename)) != GIT_ENOTFOUND) {
entry = git_vector_get(&bld->entries, pos);
if (entry->removed) {
entry->removed = 0;
bld->entry_count++;
}
} else {
if ((entry = git__malloc(sizeof(git_tree_entry))) == NULL)
return GIT_ENOMEM;
memset(entry, 0x0, sizeof(git_tree_entry));
entry->filename = git__strdup(filename);
entry->filename_len = strlen(entry->filename);
bld->entry_count++;
}
git_oid_cpy(&entry->oid, id);
entry->attr = attributes;
if (pos == GIT_ENOTFOUND) {
if (git_vector_insert(&bld->entries, entry) < 0)
return GIT_ENOMEM;
}
if (entry_out != NULL)
*entry_out = entry;
return GIT_SUCCESS;
}
static git_packlist *scan_packs(pack_backend *backend)
{
char pb[GIT_PATH_MAX];
struct scanned_pack *state = NULL, *c;
size_t cnt;
git_packlist *new_list;
if (git__fmt(pb, sizeof(pb), "%s/pack", backend->objects_dir) < 0)
return NULL;
gitfo_dirent(pb, sizeof(pb), scan_one_pack, &state);
/* TODO - merge old entries into the new array */
for (cnt = 0, c = state; c; c = c->next)
cnt++;
new_list = git__malloc(sizeof(*new_list)
+ (sizeof(new_list->packs[0]) * cnt));
if (!new_list)
goto fail;
for (cnt = 0, c = state; c; ) {
struct scanned_pack *n = c->next;
c->pack->backend = backend;
new_list->packs[cnt++] = c->pack;
free(c);
c = n;
}
new_list->n_packs = cnt;
new_list->refcnt = 2;
backend->packlist = new_list;
return new_list;
fail:
while (state) {
struct scanned_pack *n = state->next;
pack_dec(state->pack);
free(state);
state = n;
}
return NULL;
}
static git_revwalk_commit *commit_to_walkcommit(git_revwalk *walk, git_commit *commit_object)
{
git_revwalk_commit *commit;
commit = (git_revwalk_commit *)git_hashtable_lookup(walk->commits, commit_object);
if (commit != NULL)
return commit;
commit = git__malloc(sizeof(git_revwalk_commit));
if (commit == NULL)
return NULL;
memset(commit, 0x0, sizeof(git_revwalk_commit));
commit->commit_object = commit_object;
GIT_OBJECT_INCREF(commit_object);
git_hashtable_insert(walk->commits, commit_object, commit);
return commit;
}
int git_transport_git(git_transport **out)
{
transport_git *t;
#ifdef GIT_WIN32
int ret;
#endif
t = git__malloc(sizeof(transport_git));
GITERR_CHECK_ALLOC(t);
memset(t, 0x0, sizeof(transport_git));
if (git_vector_init(&t->parent.common, 8, NULL))
goto on_error;
if (git_vector_init(&t->parent.refs, 16, NULL) < 0)
goto on_error;
t->parent.connect = git_connect;
t->parent.negotiation_step = git_negotiation_step;
t->parent.close = git_close;
t->parent.free = git_free;
*out = (git_transport *) t;
#ifdef GIT_WIN32
ret = WSAStartup(MAKEWORD(2,2), &t->wsd);
if (ret != 0) {
git_free(*out);
giterr_set(GITERR_NET, "Winsock init failed");
return -1;
}
#endif
return 0;
on_error:
git__free(t);
return -1;
}
int git_signature_new(git_signature **sig_out, const char *name, const char *email, git_time_t time, int offset)
{
int error;
git_signature *p = NULL;
assert(name && email);
*sig_out = NULL;
if ((p = git__malloc(sizeof(git_signature))) == NULL) {
error = GIT_ENOMEM;
goto cleanup;
}
memset(p, 0x0, sizeof(git_signature));
error = process_trimming(name, &p->name, name + strlen(name), 1);
if (error < GIT_SUCCESS) {
git__rethrow(GIT_EINVALIDARGS, "Failed to create signature. 'name' argument is invalid");
goto cleanup;
}
error = process_trimming(email, &p->email, email + strlen(email), 1);
if (error < GIT_SUCCESS) {
git__rethrow(GIT_EINVALIDARGS, "Failed to create signature. 'email' argument is invalid");
goto cleanup;
}
p->when.time = time;
p->when.offset = offset;
*sig_out = p;
return error;
cleanup:
git_signature_free(p);
return error;
}
static int sideband_error_pkt(git_pkt **out, const char *line, size_t len)
{
git_pkt_err *pkt;
size_t alloc_len;
line++;
len--;
GITERR_CHECK_ALLOC_ADD(&alloc_len, sizeof(git_pkt_err), len);
GITERR_CHECK_ALLOC_ADD(&alloc_len, alloc_len, 1);
pkt = git__malloc(alloc_len);
GITERR_CHECK_ALLOC(pkt);
pkt->type = GIT_PKT_ERR;
pkt->len = (int)len;
memcpy(pkt->error, line, len);
pkt->error[len] = '\0';
*out = (git_pkt *)pkt;
return 0;
}
int remove_loose_object(const char *repository_folder, git_object *object)
{
static const char *objects_folder = "objects/";
char *ptr, *full_path, *top_folder;
int path_length, objects_length;
assert(repository_folder && object);
objects_length = strlen(objects_folder);
path_length = strlen(repository_folder);
ptr = full_path = git__malloc(path_length + objects_length + GIT_OID_HEXSZ + 3);
strcpy(ptr, repository_folder);
strcpy(ptr + path_length, objects_folder);
ptr = top_folder = ptr + path_length + objects_length;
*ptr++ = '/';
git_oid_pathfmt(ptr, git_object_id(object));
ptr += GIT_OID_HEXSZ + 1;
*ptr = 0;
if (gitfo_unlink(full_path) < 0) {
fprintf(stderr, "can't delete object file \"%s\"\n", full_path);
return -1;
}
*top_folder = 0;
if ((gitfo_rmdir(full_path) < 0) && (errno != ENOTEMPTY)) {
fprintf(stderr, "can't remove object directory \"%s\"\n", full_path);
return -1;
}
free(full_path);
return GIT_SUCCESS;
}
static void assert_mergebase_many(const char *expected_sha, int count, ...)
{
va_list ap;
int i;
git_oid *oids;
git_oid oid, expected;
char *partial_oid;
git_object *object;
oids = git__malloc(count * sizeof(git_oid));
cl_assert(oids != NULL);
memset(oids, 0x0, count * sizeof(git_oid));
va_start(ap, count);
for (i = 0; i < count; ++i) {
partial_oid = va_arg(ap, char *);
cl_git_pass(git_oid_fromstrn(&oid, partial_oid, strlen(partial_oid)));
cl_git_pass(git_object_lookup_prefix(&object, _repo, &oid, strlen(partial_oid), GIT_OBJ_COMMIT));
git_oid_cpy(&oids[i], git_object_id(object));
git_object_free(object);
}
va_end(ap);
if (expected_sha == NULL)
cl_assert_equal_i(GIT_ENOTFOUND, git_merge_base_many(&oid, _repo, count, oids));
else {
cl_git_pass(git_merge_base_many(&oid, _repo, count, oids));
cl_git_pass(git_oid_fromstr(&expected, expected_sha));
cl_assert(git_oid_cmp(&expected, &oid) == 0);
}
git__free(oids);
}
int git_commit_list_push_front(git_commit_list *list, git_commit *commit)
{
git_commit_node *node = NULL;
node = git__malloc(sizeof(git_commit_list));
if (node == NULL)
return GIT_ENOMEM;
node->commit = commit;
node->next = list->head;
node->prev = NULL;
if (list->head == NULL) {
list->head = list->tail = node;
} else {
list->head->prev = node;
list->head = node;
}
list->size++;
return 0;
}
static int err_pkt(git_pkt **out, const char *line, size_t len)
{
git_pkt_err *pkt;
size_t alloclen;
/* Remove "ERR " from the line */
line += 4;
len -= 4;
GITERR_CHECK_ALLOC_ADD(&alloclen, sizeof(git_pkt_progress), len);
GITERR_CHECK_ALLOC_ADD(&alloclen, alloclen, 1);
pkt = git__malloc(alloclen);
GITERR_CHECK_ALLOC(pkt);
pkt->type = GIT_PKT_ERR;
pkt->len = (int)len;
memcpy(pkt->error, line, len);
pkt->error[len] = '\0';
*out = (git_pkt *) pkt;
return 0;
}
static int note_new(
git_note **out,
git_oid *note_oid,
git_commit *commit,
git_blob *blob)
{
git_note *note = NULL;
note = (git_note *)git__malloc(sizeof(git_note));
GITERR_CHECK_ALLOC(note);
git_oid_cpy(¬e->id, note_oid);
if (git_signature_dup(¬e->author, git_commit_author(commit)) < 0 ||
git_signature_dup(¬e->committer, git_commit_committer(commit)) < 0)
return -1;
note->message = git__strndup(git_blob_rawcontent(blob), git_blob_rawsize(blob));
GITERR_CHECK_ALLOC(note->message);
*out = note;
return 0;
}
int gitfo_read_file(gitfo_buf *obj, const char *path)
{
git_file fd;
size_t len;
git_off_t size;
unsigned char *buff;
assert(obj && path && *path);
if ((fd = gitfo_open(path, O_RDONLY)) < 0)
return GIT_ERROR;
if (((size = gitfo_size(fd)) < 0) || !git__is_sizet(size+1)) {
gitfo_close(fd);
return GIT_ERROR;
}
len = (size_t) size;
if ((buff = git__malloc(len + 1)) == NULL) {
gitfo_close(fd);
return GIT_ERROR;
}
if (gitfo_read(fd, buff, len) < 0) {
gitfo_close(fd);
free(buff);
return GIT_ERROR;
}
buff[len] = '\0';
gitfo_close(fd);
obj->data = buff;
obj->len = len;
return GIT_SUCCESS;
}
int git_cred_ssh_custom_new(
git_cred **cred,
const char *username,
const char *publickey,
size_t publickey_len,
git_cred_sign_callback sign_callback,
void *sign_data)
{
git_cred_ssh_custom *c;
assert(cred);
c = git__calloc(1, sizeof(git_cred_ssh_custom));
GITERR_CHECK_ALLOC(c);
c->parent.credtype = GIT_CREDTYPE_SSH_CUSTOM;
c->parent.free = ssh_custom_free;
if (username) {
c->username = git__strdup(username);
GITERR_CHECK_ALLOC(c->username);
}
if (publickey_len > 0) {
c->publickey = git__malloc(publickey_len);
GITERR_CHECK_ALLOC(c->publickey);
memcpy(c->publickey, publickey, publickey_len);
}
c->publickey_len = publickey_len;
c->sign_callback = sign_callback;
c->sign_data = sign_data;
*cred = &c->parent;
return 0;
}
/**
* Converts a wide string to UTF-8.
* Memory is allocated to hold the converted string.
* The caller is responsible for freeing the string with git__free.
*
* @param dest Receives a pointer to the UTF-8 string.
* @param src The wide string to convert.
* @return The length of the UTF-8 string, in bytes (not counting the NULL terminator), or < 0 for failure
*/
int git__utf16_to_8_alloc(char **dest, const wchar_t *src)
{
int utf8_size;
DWORD dwFlags = get_wc_flags();
*dest = NULL;
/* Length of -1 indicates NULL termination of the input string */
utf8_size = WideCharToMultiByte(CP_UTF8, dwFlags, src, -1, NULL, 0, NULL, NULL);
if (!utf8_size) {
git__set_errno();
return -1;
}
*dest = git__malloc(utf8_size);
if (!*dest) {
errno = ENOMEM;
return -1;
}
utf8_size = WideCharToMultiByte(CP_UTF8, dwFlags, src, -1, *dest, utf8_size, NULL, NULL);
if (!utf8_size) {
git__set_errno();
git__free(*dest);
*dest = NULL;
}
/* Subtract 1 from the result to turn 0 into -1 (an error code) and to not count the NULL
* terminator as part of the string's length. MultiByteToWideChar never returns int's minvalue,
* so underflow is not possible */
return utf8_size - 1;
}
wchar_t* gitwin_to_utf16(const char* str)
{
wchar_t* ret;
int cb;
if (!str)
return NULL;
cb = MultiByteToWideChar(_active_codepage, 0, str, -1, NULL, 0);
if (cb == 0)
return (wchar_t *)git__calloc(1, sizeof(wchar_t));
ret = (wchar_t *)git__malloc(cb * sizeof(wchar_t));
if (!ret)
return NULL;
if (MultiByteToWideChar(_active_codepage, 0, str, -1, ret, (int)cb) == 0) {
giterr_set(GITERR_OS, "Could not convert string to UTF-16");
git__free(ret);
ret = NULL;
}
return ret;
}
int git_revwalk_new(git_revwalk **revwalk_out, git_repository *repo)
{
git_revwalk *walk;
walk = git__malloc(sizeof(git_revwalk));
if (walk == NULL)
return GIT_ENOMEM;
memset(walk, 0x0, sizeof(git_revwalk));
walk->commits = git_hashtable_alloc(64,
git_revwalk__commit_hash,
git_revwalk__commit_keycmp);
if (walk->commits == NULL) {
free(walk);
return GIT_ENOMEM;
}
walk->repo = repo;
*revwalk_out = walk;
return GIT_SUCCESS;
}
char *cl_getenv(const char *name)
{
wchar_t name_utf16[GIT_WIN_PATH];
DWORD alloc_len;
wchar_t *value_utf16;
char *value_utf8;
git__utf8_to_16(name_utf16, GIT_WIN_PATH, name);
alloc_len = GetEnvironmentVariableW(name_utf16, NULL, 0);
if (alloc_len <= 0)
return NULL;
alloc_len = GIT_WIN_PATH;
cl_assert(value_utf16 = git__calloc(alloc_len, sizeof(wchar_t)));
GetEnvironmentVariableW(name_utf16, value_utf16, alloc_len);
cl_assert(value_utf8 = git__malloc(alloc_len));
git__utf16_to_8(value_utf8, value_utf16);
git__free(value_utf16);
return value_utf8;
}
int git_index__parse(git_index *index, const char *buffer, size_t buffer_size)
{
unsigned int i;
struct index_header header;
git_oid checksum_calculated, checksum_expected;
#define seek_forward(_increase) { \
if (_increase >= buffer_size) \
return GIT_EOBJCORRUPTED; \
buffer += _increase; \
buffer_size -= _increase;\
}
if (buffer_size < INDEX_HEADER_SIZE + INDEX_FOOTER_SIZE)
return GIT_EOBJCORRUPTED;
/* Precalculate the SHA1 of the files's contents -- we'll match it to
* the provided SHA1 in the footer */
git_hash_buf(&checksum_calculated, (const void *)buffer, buffer_size - INDEX_FOOTER_SIZE);
/* Parse header */
if (read_header(&header, buffer) < 0)
return GIT_EOBJCORRUPTED;
seek_forward(INDEX_HEADER_SIZE);
index->entry_count = header.entry_count;
/* If there is already a entires array, reuse it if it can hold all the
* entries. If not, free and reallocate */
if (index->entry_count > index->entries_size) {
free(index->entries);
index->entries_size = (uint32_t)(index->entry_count * 1.3f);
index->entries = git__malloc(index->entries_size * sizeof(git_index_entry));
}
/* Parse all the entries */
for (i = 0; i < index->entry_count && buffer_size > INDEX_FOOTER_SIZE; ++i) {
size_t entry_size;
entry_size = read_entry(&index->entries[i], buffer, buffer_size);
/* 0 bytes read means an object corruption */
if (entry_size == 0)
return GIT_EOBJCORRUPTED;
seek_forward(entry_size);
}
if (i != index->entry_count)
return GIT_EOBJCORRUPTED;
/* There's still space for some extensions! */
while (buffer_size > INDEX_FOOTER_SIZE) {
size_t extension_size;
extension_size = read_extension(index, buffer, buffer_size);
/* see if we have read any bytes from the extension */
if (extension_size == 0)
return GIT_EOBJCORRUPTED;
seek_forward(extension_size);
}
if (buffer_size != INDEX_FOOTER_SIZE)
return GIT_EOBJCORRUPTED;
/* 160-bit SHA-1 over the content of the index file before this checksum. */
git_oid_mkraw(&checksum_expected, (const unsigned char *)buffer);
if (git_oid_cmp(&checksum_calculated, &checksum_expected) != 0)
return GIT_EOBJCORRUPTED;
#undef seek_forward
return 0;
}
static git_index_tree *read_tree_internal(
const char **buffer_in, const char *buffer_end, git_index_tree *parent)
{
git_index_tree *tree;
const char *name_start, *buffer;
if ((tree = git__malloc(sizeof(git_index_tree))) == NULL)
return NULL;
memset(tree, 0x0, sizeof(git_index_tree));
tree->parent = parent;
buffer = name_start = *buffer_in;
if ((buffer = memchr(buffer, '\0', buffer_end - buffer)) == NULL)
goto error_cleanup;
/* NUL-terminated tree name */
tree->name = git__strdup(name_start);
if (++buffer >= buffer_end)
goto error_cleanup;
/* Blank-terminated ASCII decimal number of entries in this tree */
tree->entries = strtol(buffer, (char **)&buffer, 10);
if (*buffer != ' ' || ++buffer >= buffer_end)
goto error_cleanup;
/* Number of children of the tree, newline-terminated */
tree->children_count = strtol(buffer, (char **)&buffer, 10);
if (*buffer != '\n' || ++buffer >= buffer_end)
goto error_cleanup;
/* 160-bit SHA-1 for this tree and it's children */
if (buffer + GIT_OID_RAWSZ > buffer_end)
goto error_cleanup;
git_oid_mkraw(&tree->oid, (const unsigned char *)buffer);
buffer += GIT_OID_RAWSZ;
/* Parse children: */
if (tree->children_count > 0) {
unsigned int i;
tree->children = git__malloc(tree->children_count * sizeof(git_index_tree *));
if (tree->children == NULL)
goto error_cleanup;
for (i = 0; i < tree->children_count; ++i) {
tree->children[i] = read_tree_internal(&buffer, buffer_end, tree);
if (tree->children[i] == NULL)
goto error_cleanup;
}
}
*buffer_in = buffer;
return tree;
error_cleanup:
git_index_tree__free(tree);
return NULL;
}
int git_index_insert(git_index *index, const git_index_entry *source_entry)
{
git_index_entry *offset;
size_t path_length;
int position;
assert(index && source_entry);
if (source_entry->path == NULL)
return GIT_EMISSINGOBJDATA;
position = git_index_find(index, source_entry->path);
if (position == GIT_ENOTFOUND) {
/* Resize the entries array */
if (index->entry_count + 1 > index->entries_size) {
git_index_entry *new_entries;
size_t new_size;
new_size = (unsigned int)(index->entries_size * 1.5f);
if (new_size < 8)
new_size = 8;
if ((new_entries = git__malloc(new_size * sizeof(git_index_entry))) == NULL)
return GIT_ENOMEM;
memcpy(new_entries, index->entries, index->entry_count * sizeof(git_index_entry));
free(index->entries);
index->entries_size = new_size;
index->entries = new_entries;
}
offset = &index->entries[index->entry_count];
index->entry_count++;
index->sorted = 0;
} else {
offset = &index->entries[position];
free(offset->path);
}
memcpy(offset, source_entry, sizeof(git_index_entry));
/* duplicate the path string so we own it */
offset->path = git__strdup(offset->path);
if (offset->path == NULL)
return GIT_ENOMEM;
/* make sure that the path length flag is correct */
path_length = strlen(offset->path);
offset->flags &= ~GIT_IDXENTRY_NAMEMASK;
if (path_length < GIT_IDXENTRY_NAMEMASK)
offset->flags |= path_length & GIT_IDXENTRY_NAMEMASK;
else
offset->flags |= GIT_IDXENTRY_NAMEMASK;;
/* TODO: force the extended index entry flag? */
assert(offset->path);
return GIT_SUCCESS;
}
int p_readlink(const char *link, char *target, size_t target_len)
{
typedef DWORD (WINAPI *fpath_func)(HANDLE, LPWSTR, DWORD, DWORD);
static fpath_func pGetFinalPath = NULL;
HANDLE hFile;
DWORD dwRet;
wchar_t link_w[GIT_WIN_PATH];
wchar_t* target_w;
int error = 0;
assert(link && target && target_len > 0);
/*
* Try to load the pointer to pGetFinalPath dynamically, because
* it is not available in platforms older than Vista
*/
if (pGetFinalPath == NULL) {
HMODULE module = GetModuleHandle("kernel32");
if (module != NULL)
pGetFinalPath = (fpath_func)GetProcAddress(module, "GetFinalPathNameByHandleW");
if (pGetFinalPath == NULL) {
giterr_set(GITERR_OS,
"'GetFinalPathNameByHandleW' is not available in this platform");
return -1;
}
}
git__utf8_to_16(link_w, GIT_WIN_PATH, link);
hFile = CreateFileW(link_w, // file to open
GENERIC_READ, // open for reading
FILE_SHARE_READ, // share for reading
NULL, // default security
OPEN_EXISTING, // existing file only
FILE_FLAG_BACKUP_SEMANTICS, // normal file
NULL); // no attr. template
if (hFile == INVALID_HANDLE_VALUE) {
giterr_set(GITERR_OS, "Cannot open '%s' for reading", link);
return -1;
}
target_w = (wchar_t*)git__malloc(target_len * sizeof(wchar_t));
GITERR_CHECK_ALLOC(target_w);
dwRet = pGetFinalPath(hFile, target_w, (DWORD)target_len, 0x0);
if (dwRet == 0 ||
dwRet >= target_len ||
!WideCharToMultiByte(CP_UTF8, 0, target_w, -1, target,
(int)(target_len * sizeof(char)), NULL, NULL))
error = -1;
git__free(target_w);
CloseHandle(hFile);
if (error)
return error;
/* Skip first 4 characters if they are "\\?\" */
if (dwRet > 4 &&
target[0] == '\\' && target[1] == '\\' &&
target[2] == '?' && target[3] == '\\')
{
unsigned int offset = 4;
dwRet -= 4;
/* \??\UNC\ */
if (dwRet > 7 &&
target[4] == 'U' && target[5] == 'N' && target[6] == 'C')
{
offset += 2;
dwRet -= 2;
target[offset] = '\\';
}
memmove(target, target + offset, dwRet);
}
target[dwRet] = '\0';
return dwRet;
}
int git_commit__parse_raw(void *_commit, const char *data, size_t size)
{
git_commit *commit = _commit;
const char *buffer_start = data, *buffer;
const char *buffer_end = buffer_start + size;
git_oid parent_id;
size_t header_len;
git_signature dummy_sig;
buffer = buffer_start;
/* Allocate for one, which will allow not to realloc 90% of the time */
git_array_init_to_size(commit->parent_ids, 1);
GITERR_CHECK_ARRAY(commit->parent_ids);
/* The tree is always the first field */
if (git_oid__parse(&commit->tree_id, &buffer, buffer_end, "tree ") < 0)
goto bad_buffer;
/*
* TODO: commit grafts!
*/
while (git_oid__parse(&parent_id, &buffer, buffer_end, "parent ") == 0) {
git_oid *new_id = git_array_alloc(commit->parent_ids);
GITERR_CHECK_ALLOC(new_id);
git_oid_cpy(new_id, &parent_id);
}
commit->author = git__malloc(sizeof(git_signature));
GITERR_CHECK_ALLOC(commit->author);
if (git_signature__parse(commit->author, &buffer, buffer_end, "author ", '\n') < 0)
return -1;
/* Some tools create multiple author fields, ignore the extra ones */
while (!git__prefixncmp(buffer, buffer_end - buffer, "author ")) {
if (git_signature__parse(&dummy_sig, &buffer, buffer_end, "author ", '\n') < 0)
return -1;
git__free(dummy_sig.name);
git__free(dummy_sig.email);
}
/* Always parse the committer; we need the commit time */
commit->committer = git__malloc(sizeof(git_signature));
GITERR_CHECK_ALLOC(commit->committer);
if (git_signature__parse(commit->committer, &buffer, buffer_end, "committer ", '\n') < 0)
return -1;
/* Parse add'l header entries */
while (buffer < buffer_end) {
const char *eoln = buffer;
if (buffer[-1] == '\n' && buffer[0] == '\n')
break;
while (eoln < buffer_end && *eoln != '\n')
++eoln;
if (git__prefixncmp(buffer, buffer_end - buffer, "encoding ") == 0) {
buffer += strlen("encoding ");
commit->message_encoding = git__strndup(buffer, eoln - buffer);
GITERR_CHECK_ALLOC(commit->message_encoding);
}
if (eoln < buffer_end && *eoln == '\n')
++eoln;
buffer = eoln;
}
header_len = buffer - buffer_start;
commit->raw_header = git__strndup(buffer_start, header_len);
GITERR_CHECK_ALLOC(commit->raw_header);
/* point "buffer" to data after header, +1 for the final LF */
buffer = buffer_start + header_len + 1;
/* extract commit message */
if (buffer <= buffer_end)
commit->raw_message = git__strndup(buffer, buffer_end - buffer);
else
commit->raw_message = git__strdup("");
GITERR_CHECK_ALLOC(commit->raw_message);
return 0;
bad_buffer:
giterr_set(GITERR_OBJECT, "failed to parse bad commit object");
return -1;
}
static int http_stream_write_chunked(
git_smart_subtransport_stream *stream,
const char *buffer,
size_t len)
{
http_stream *s = (http_stream *)stream;
http_subtransport *t = OWNING_SUBTRANSPORT(s);
assert(t->connected);
/* Send the request, if necessary */
if (!s->sent_request) {
git_buf request = GIT_BUF_INIT;
clear_parser_state(t);
if (gen_request(&request, s, 0) < 0) {
giterr_set(GITERR_NET, "Failed to generate request");
return -1;
}
if (gitno_send(&t->socket, request.ptr, request.size, 0) < 0) {
git_buf_free(&request);
return -1;
}
git_buf_free(&request);
s->sent_request = 1;
}
if (len > CHUNK_SIZE) {
/* Flush, if necessary */
if (s->chunk_buffer_len > 0) {
if (write_chunk(&t->socket, s->chunk_buffer, s->chunk_buffer_len) < 0)
return -1;
s->chunk_buffer_len = 0;
}
/* Write chunk directly */
if (write_chunk(&t->socket, buffer, len) < 0)
return -1;
}
else {
/* Append as much to the buffer as we can */
int count = min(CHUNK_SIZE - s->chunk_buffer_len, len);
if (!s->chunk_buffer)
s->chunk_buffer = git__malloc(CHUNK_SIZE);
memcpy(s->chunk_buffer + s->chunk_buffer_len, buffer, count);
s->chunk_buffer_len += count;
buffer += count;
len -= count;
/* Is the buffer full? If so, then flush */
if (CHUNK_SIZE == s->chunk_buffer_len) {
if (write_chunk(&t->socket, s->chunk_buffer, s->chunk_buffer_len) < 0)
return -1;
s->chunk_buffer_len = 0;
if (len > 0) {
memcpy(s->chunk_buffer, buffer, len);
s->chunk_buffer_len = len;
}
}
}
return 0;
}
int git_signature__parse(git_signature *sig, const char **buffer_out,
const char *buffer_end, const char *header)
{
const size_t header_len = strlen(header);
int name_length, email_length;
const char *buffer = *buffer_out;
const char *line_end, *name_end, *email_end;
long offset = 0, time;
memset(sig, 0x0, sizeof(git_signature));
line_end = memchr(buffer, '\n', buffer_end - buffer);
if (!line_end)
return git__throw(GIT_EOBJCORRUPTED, "Failed to parse signature. No newline found");;
if (buffer + (header_len + 1) > line_end)
return git__throw(GIT_EOBJCORRUPTED, "Failed to parse signature. Signature too short");
if (memcmp(buffer, header, header_len) != 0)
return git__throw(GIT_EOBJCORRUPTED, "Failed to parse signature. Expected prefix '%s' doesn't match actual", header);
buffer += header_len;
/* Parse name */
if ((name_end = strstr(buffer, " <")) == NULL)
return git__throw(GIT_EOBJCORRUPTED, "Failed to parse signature. Can't find e-mail start");
name_length = name_end - buffer;
if (name_length <= 0)
return git__throw(GIT_EOBJCORRUPTED, "Failed to parse signature. Missing tagger name");
sig->name = git__malloc(name_length + 1);
if (sig->name == NULL)
return GIT_ENOMEM;
memcpy(sig->name, buffer, name_length);
sig->name[name_length] = 0;
buffer = name_end + 2;
if (buffer >= line_end)
return git__throw(GIT_EOBJCORRUPTED, "Failed to parse signature. Ended unexpectedly");
/* Parse email */
if ((email_end = strstr(buffer, "> ")) == NULL)
return git__throw(GIT_EOBJCORRUPTED, "Failed to parse signature. Can't find e-mail end");
email_length = email_end - buffer;
sig->email = git__malloc(email_length + 1);
if (sig->name == NULL)
return GIT_ENOMEM;
memcpy(sig->email, buffer, email_length);
sig->email[email_length] = 0;
buffer = email_end + 2;
if (buffer >= line_end)
return git__throw(GIT_EOBJCORRUPTED, "Failed to parse signature. Ended unexpectedly");
/* verify email */
if (strpbrk(sig->email, "><\n ") != NULL)
return git__throw(GIT_EOBJCORRUPTED, "Failed to parse signature. Malformed e-mail");
if (git__strtol32(&time, buffer, &buffer, 10) < GIT_SUCCESS)
return git__throw(GIT_EOBJCORRUPTED, "Failed to parse signature. Timestamp isn't a number");
sig->when.time = (time_t)time;
if (parse_timezone_offset(buffer, &offset) < GIT_SUCCESS)
return git__throw(GIT_EOBJCORRUPTED, "Failed to parse signature. Could not parse timezone offset");
sig->when.offset = offset;
*buffer_out = (line_end + 1);
return GIT_SUCCESS;
}
static int winhttp_stream_read(
git_smart_subtransport_stream *stream,
char *buffer,
size_t buf_size,
size_t *bytes_read)
{
winhttp_stream *s = (winhttp_stream *)stream;
winhttp_subtransport *t = OWNING_SUBTRANSPORT(s);
DWORD dw_bytes_read;
char replay_count = 0;
int error;
replay:
/* Enforce a reasonable cap on the number of replays */
if (++replay_count >= 7) {
giterr_set(GITERR_NET, "Too many redirects or authentication replays");
return -1;
}
/* Connect if necessary */
if (!s->request && winhttp_stream_connect(s) < 0)
return -1;
if (!s->received_response) {
DWORD status_code, status_code_length, content_type_length, bytes_written;
char expected_content_type_8[MAX_CONTENT_TYPE_LEN];
wchar_t expected_content_type[MAX_CONTENT_TYPE_LEN], content_type[MAX_CONTENT_TYPE_LEN];
if (!s->sent_request) {
if ((error = send_request(s, s->post_body_len, 0)) < 0)
return error;
s->sent_request = 1;
}
if (s->chunked) {
assert(s->verb == post_verb);
/* Flush, if necessary */
if (s->chunk_buffer_len > 0 &&
write_chunk(s->request, s->chunk_buffer, s->chunk_buffer_len) < 0)
return -1;
s->chunk_buffer_len = 0;
/* Write the final chunk. */
if (!WinHttpWriteData(s->request,
"0\r\n\r\n", 5,
&bytes_written)) {
giterr_set(GITERR_OS, "Failed to write final chunk");
return -1;
}
}
else if (s->post_body) {
char *buffer;
DWORD len = s->post_body_len, bytes_read;
if (INVALID_SET_FILE_POINTER == SetFilePointer(s->post_body,
0, 0, FILE_BEGIN) &&
NO_ERROR != GetLastError()) {
giterr_set(GITERR_OS, "Failed to reset file pointer");
return -1;
}
buffer = git__malloc(CACHED_POST_BODY_BUF_SIZE);
while (len > 0) {
DWORD bytes_written;
if (!ReadFile(s->post_body, buffer,
min(CACHED_POST_BODY_BUF_SIZE, len),
&bytes_read, NULL) ||
!bytes_read) {
git__free(buffer);
giterr_set(GITERR_OS, "Failed to read from temp file");
return -1;
}
if (!WinHttpWriteData(s->request, buffer,
bytes_read, &bytes_written)) {
git__free(buffer);
giterr_set(GITERR_OS, "Failed to write data");
return -1;
}
len -= bytes_read;
assert(bytes_read == bytes_written);
}
git__free(buffer);
/* Eagerly close the temp file */
CloseHandle(s->post_body);
s->post_body = NULL;
}
if (!WinHttpReceiveResponse(s->request, 0)) {
giterr_set(GITERR_OS, "Failed to receive response");
return -1;
}
/* Verify that we got a 200 back */
status_code_length = sizeof(status_code);
if (!WinHttpQueryHeaders(s->request,
WINHTTP_QUERY_STATUS_CODE | WINHTTP_QUERY_FLAG_NUMBER,
WINHTTP_HEADER_NAME_BY_INDEX,
&status_code, &status_code_length,
WINHTTP_NO_HEADER_INDEX)) {
giterr_set(GITERR_OS, "Failed to retrieve status code");
return -1;
}
/* The implementation of WinHTTP prior to Windows 7 will not
* redirect to an identical URI. Some Git hosters use self-redirects
* as part of their DoS mitigation strategy. Check first to see if we
* have a redirect status code, and that we haven't already streamed
* a post body. (We can't replay a streamed POST.) */
if (!s->chunked &&
(HTTP_STATUS_MOVED == status_code ||
HTTP_STATUS_REDIRECT == status_code ||
(HTTP_STATUS_REDIRECT_METHOD == status_code &&
get_verb == s->verb) ||
HTTP_STATUS_REDIRECT_KEEP_VERB == status_code)) {
/* Check for Windows 7. This workaround is only necessary on
* Windows Vista and earlier. Windows 7 is version 6.1. */
wchar_t *location;
DWORD location_length;
char *location8;
/* OK, fetch the Location header from the redirect. */
if (WinHttpQueryHeaders(s->request,
WINHTTP_QUERY_LOCATION,
WINHTTP_HEADER_NAME_BY_INDEX,
WINHTTP_NO_OUTPUT_BUFFER,
&location_length,
WINHTTP_NO_HEADER_INDEX) ||
GetLastError() != ERROR_INSUFFICIENT_BUFFER) {
giterr_set(GITERR_OS, "Failed to read Location header");
return -1;
}
location = git__malloc(location_length);
GITERR_CHECK_ALLOC(location);
if (!WinHttpQueryHeaders(s->request,
WINHTTP_QUERY_LOCATION,
WINHTTP_HEADER_NAME_BY_INDEX,
location,
&location_length,
WINHTTP_NO_HEADER_INDEX)) {
giterr_set(GITERR_OS, "Failed to read Location header");
git__free(location);
return -1;
}
/* Convert the Location header to UTF-8 */
if (git__utf16_to_8_alloc(&location8, location) < 0) {
giterr_set(GITERR_OS, "Failed to convert Location header to UTF-8");
git__free(location);
return -1;
}
git__free(location);
/* Replay the request */
winhttp_stream_close(s);
if (!git__prefixcmp_icase(location8, prefix_https)) {
/* Upgrade to secure connection; disconnect and start over */
if (gitno_connection_data_from_url(&t->connection_data, location8, s->service_url) < 0) {
git__free(location8);
return -1;
}
winhttp_close_connection(t);
if (winhttp_connect(t) < 0)
return -1;
}
git__free(location8);
goto replay;
}
/* Handle authentication failures */
if (HTTP_STATUS_DENIED == status_code && get_verb == s->verb) {
int allowed_types;
if (parse_unauthorized_response(s->request, &allowed_types, &t->auth_mechanism) < 0)
return -1;
if (allowed_types &&
(!t->cred || 0 == (t->cred->credtype & allowed_types))) {
int cred_error = 1;
/* Start with the user-supplied credential callback, if present */
if (t->owner->cred_acquire_cb) {
cred_error = t->owner->cred_acquire_cb(&t->cred, t->owner->url,
t->connection_data.user, allowed_types, t->owner->cred_acquire_payload);
if (cred_error < 0)
return cred_error;
}
/* Invoke the fallback credentials acquisition callback if necessary */
if (cred_error > 0) {
cred_error = fallback_cred_acquire_cb(&t->cred, t->owner->url,
t->connection_data.user, allowed_types, NULL);
if (cred_error < 0)
return cred_error;
}
if (!cred_error) {
assert(t->cred);
winhttp_stream_close(s);
/* Successfully acquired a credential */
goto replay;
}
}
}
if (HTTP_STATUS_OK != status_code) {
giterr_set(GITERR_NET, "Request failed with status code: %d", status_code);
return -1;
}
/* Verify that we got the correct content-type back */
if (post_verb == s->verb)
p_snprintf(expected_content_type_8, MAX_CONTENT_TYPE_LEN, "application/x-git-%s-result", s->service);
else
p_snprintf(expected_content_type_8, MAX_CONTENT_TYPE_LEN, "application/x-git-%s-advertisement", s->service);
if (git__utf8_to_16(expected_content_type, MAX_CONTENT_TYPE_LEN, expected_content_type_8) < 0) {
giterr_set(GITERR_OS, "Failed to convert expected content-type to wide characters");
return -1;
}
content_type_length = sizeof(content_type);
if (!WinHttpQueryHeaders(s->request,
WINHTTP_QUERY_CONTENT_TYPE,
WINHTTP_HEADER_NAME_BY_INDEX,
&content_type, &content_type_length,
WINHTTP_NO_HEADER_INDEX)) {
giterr_set(GITERR_OS, "Failed to retrieve response content-type");
return -1;
}
if (wcscmp(expected_content_type, content_type)) {
giterr_set(GITERR_NET, "Received unexpected content-type");
return -1;
}
s->received_response = 1;
}
if (!WinHttpReadData(s->request,
(LPVOID)buffer,
(DWORD)buf_size,
&dw_bytes_read))
{
giterr_set(GITERR_OS, "Failed to read data");
return -1;
}
*bytes_read = dw_bytes_read;
return 0;
}
static int winhttp_stream_write_chunked(
git_smart_subtransport_stream *stream,
const char *buffer,
size_t len)
{
winhttp_stream *s = (winhttp_stream *)stream;
int error;
if (!s->request && winhttp_stream_connect(s) < 0)
return -1;
if (!s->sent_request) {
/* Send Transfer-Encoding: chunked header */
if (!WinHttpAddRequestHeaders(s->request,
transfer_encoding, (ULONG) -1L,
WINHTTP_ADDREQ_FLAG_ADD)) {
giterr_set(GITERR_OS, "Failed to add a header to the request");
return -1;
}
if ((error = send_request(s, 0, 1)) < 0)
return error;
s->sent_request = 1;
}
if (len > CACHED_POST_BODY_BUF_SIZE) {
/* Flush, if necessary */
if (s->chunk_buffer_len > 0) {
if (write_chunk(s->request, s->chunk_buffer, s->chunk_buffer_len) < 0)
return -1;
s->chunk_buffer_len = 0;
}
/* Write chunk directly */
if (write_chunk(s->request, buffer, len) < 0)
return -1;
}
else {
/* Append as much to the buffer as we can */
int count = (int)min(CACHED_POST_BODY_BUF_SIZE - s->chunk_buffer_len, len);
if (!s->chunk_buffer)
s->chunk_buffer = git__malloc(CACHED_POST_BODY_BUF_SIZE);
memcpy(s->chunk_buffer + s->chunk_buffer_len, buffer, count);
s->chunk_buffer_len += count;
buffer += count;
len -= count;
/* Is the buffer full? If so, then flush */
if (CACHED_POST_BODY_BUF_SIZE == s->chunk_buffer_len) {
if (write_chunk(s->request, s->chunk_buffer, s->chunk_buffer_len) < 0)
return -1;
s->chunk_buffer_len = 0;
/* Is there any remaining data from the source? */
if (len > 0) {
memcpy(s->chunk_buffer, buffer, len);
s->chunk_buffer_len = (unsigned int)len;
}
}
}
return 0;
}
int commit_parse_buffer(git_commit *commit, void *data, size_t len, unsigned int parse_flags)
{
char *buffer = (char *)data;
const char *buffer_end = (char *)data + len;
git_oid oid;
int error;
/* first parse; the vector hasn't been initialized yet */
if (commit->parents.contents == NULL) {
git_vector_init(&commit->parents, 4, NULL, NULL);
}
clear_parents(commit);
if ((error = git__parse_oid(&oid, &buffer, buffer_end, "tree ")) < GIT_SUCCESS)
return error;
if ((error = git_repository_lookup((git_object **)&commit->tree, commit->object.repo, &oid, GIT_OBJ_TREE)) < GIT_SUCCESS)
return error;
/*
* TODO: commit grafts!
*/
while (git__parse_oid(&oid, &buffer, buffer_end, "parent ") == GIT_SUCCESS) {
git_commit *parent;
if ((error = git_repository_lookup((git_object **)&parent, commit->object.repo, &oid, GIT_OBJ_COMMIT)) < GIT_SUCCESS)
return error;
if (git_vector_insert(&commit->parents, parent) < GIT_SUCCESS)
return GIT_ENOMEM;
}
if (parse_flags & COMMIT_FULL_PARSE) {
if (commit->author)
git_signature_free(commit->author);
commit->author = git__malloc(sizeof(git_signature));
if ((error = git_signature__parse(commit->author, &buffer, buffer_end, "author ")) < GIT_SUCCESS)
return error;
} else {
if ((buffer = memchr(buffer, '\n', buffer_end - buffer)) == NULL)
return GIT_EOBJCORRUPTED;
buffer++;
}
/* Always parse the committer; we need the commit time */
if (commit->committer)
git_signature_free(commit->committer);
commit->committer = git__malloc(sizeof(git_signature));
if ((error = git_signature__parse(commit->committer, &buffer, buffer_end, "committer ")) < GIT_SUCCESS)
return error;
/* parse commit message */
while (buffer <= buffer_end && *buffer == '\n')
buffer++;
if (parse_flags & COMMIT_FULL_PARSE && buffer < buffer_end) {
const char *line_end;
size_t message_len = buffer_end - buffer;
/* Long message */
message_len = buffer_end - buffer;
commit->message = git__malloc(message_len + 1);
memcpy(commit->message, buffer, message_len);
commit->message[message_len] = 0;
/* Short message */
if((line_end = memchr(buffer, '\n', buffer_end - buffer)) == NULL)
line_end = buffer_end;
message_len = line_end - buffer;
commit->message_short = git__malloc(message_len + 1);
memcpy(commit->message_short, buffer, message_len);
commit->message_short[message_len] = 0;
}
return GIT_SUCCESS;
}
static int crlf_check(
git_filter *self,
void **payload, /* points to NULL ptr on entry, may be set */
const git_filter_source *src,
const char **attr_values)
{
int error;
struct crlf_attrs ca;
GIT_UNUSED(self);
if (!attr_values) {
ca.crlf_action = GIT_CRLF_GUESS;
ca.eol = GIT_EOL_UNSET;
} else {
ca.crlf_action = check_crlf(attr_values[2]); /* text */
if (ca.crlf_action == GIT_CRLF_GUESS)
ca.crlf_action = check_crlf(attr_values[0]); /* clrf */
ca.eol = check_eol(attr_values[1]); /* eol */
}
ca.auto_crlf = GIT_AUTO_CRLF_DEFAULT;
/*
* Use the core Git logic to see if we should perform CRLF for this file
* based on its attributes & the value of `core.autocrlf`
*/
ca.crlf_action = crlf_input_action(&ca);
if (ca.crlf_action == GIT_CRLF_BINARY)
return GIT_PASSTHROUGH;
if (ca.crlf_action == GIT_CRLF_GUESS ||
(ca.crlf_action == GIT_CRLF_AUTO &&
git_filter_source_mode(src) == GIT_FILTER_SMUDGE)) {
error = git_repository__cvar(
&ca.auto_crlf, git_filter_source_repo(src), GIT_CVAR_AUTO_CRLF);
if (error < 0)
return error;
if (ca.auto_crlf == GIT_AUTO_CRLF_FALSE)
return GIT_PASSTHROUGH;
if (ca.auto_crlf == GIT_AUTO_CRLF_INPUT &&
git_filter_source_mode(src) == GIT_FILTER_SMUDGE)
return GIT_PASSTHROUGH;
}
if (git_filter_source_mode(src) == GIT_FILTER_CLEAN) {
error = git_repository__cvar(
&ca.safe_crlf, git_filter_source_repo(src), GIT_CVAR_SAFE_CRLF);
if (error < 0)
return error;
/* downgrade FAIL to WARN if ALLOW_UNSAFE option is used */
if ((git_filter_source_options(src) & GIT_FILTER_OPT_ALLOW_UNSAFE) &&
ca.safe_crlf == GIT_SAFE_CRLF_FAIL)
ca.safe_crlf = GIT_SAFE_CRLF_WARN;
}
*payload = git__malloc(sizeof(ca));
GITERR_CHECK_ALLOC(*payload);
memcpy(*payload, &ca, sizeof(ca));
return 0;
}
