int git_pkt_buffer_wants(const git_vector *refs, git_transport_caps *caps, git_buf *buf)
{
unsigned int i = 0;
git_remote_head *head;
if (caps->common) {
for (; i < refs->length; ++i) {
head = refs->contents[i];
if (!head->local)
break;
}
if (buffer_want_with_caps(refs->contents[i], caps, buf) < 0)
return -1;
i++;
}
for (; i < refs->length; ++i) {
char oid[GIT_OID_HEXSZ];
head = refs->contents[i];
if (head->local)
continue;
git_oid_fmt(oid, &head->oid);
git_buf_put(buf, pkt_want_prefix, strlen(pkt_want_prefix));
git_buf_put(buf, oid, GIT_OID_HEXSZ);
git_buf_putc(buf, '\n');
if (git_buf_oom(buf))
return -1;
}
return git_pkt_buffer_flush(buf);
}
int git_treebuilder_write(git_oid *oid, git_repository *repo, git_treebuilder *bld)
{
unsigned int i;
int error;
git_buf tree = GIT_BUF_INIT;
assert(bld);
sort_entries(bld);
/* Grow the buffer beforehand to an estimated size */
git_buf_grow(&tree, bld->entries.length * 72);
for (i = 0; i < bld->entries.length; ++i) {
git_tree_entry *entry = bld->entries.contents[i];
if (entry->removed)
continue;
git_buf_printf(&tree, "%o ", entry->attr);
git_buf_put(&tree, entry->filename, entry->filename_len + 1);
git_buf_put(&tree, (char *)entry->oid.id, GIT_OID_RAWSZ);
}
if (git_buf_oom(&tree)) {
git_buf_free(&tree);
return git__throw(GIT_ENOMEM, "Not enough memory to build the tree data");
}
error = git_odb_write(oid, git_repository_database(repo), tree.ptr, tree.size, GIT_OBJ_TREE);
git_buf_free(&tree);
return error == GIT_SUCCESS ? GIT_SUCCESS : git__rethrow(error, "Failed to write tree");
}
static int ident_insert_id(
git_buf *to, const git_buf *from, const git_filter_source *src)
{
char oid[GIT_OID_HEXSZ+1];
const char *id_start, *id_end, *from_end = from->ptr + from->size;
size_t need_size;
/* replace $Id$ with blob id */
if (!git_filter_source_id(src))
return GIT_PASSTHROUGH;
git_oid_tostr(oid, sizeof(oid), git_filter_source_id(src));
if (ident_find_id(&id_start, &id_end, from->ptr, from->size) < 0)
return GIT_PASSTHROUGH;
need_size = (size_t)(id_start - from->ptr) +
5 /* "$Id: " */ + GIT_OID_HEXSZ + 1 /* "$" */ +
(size_t)(from_end - id_end);
if (git_buf_grow(to, need_size) < 0)
return -1;
git_buf_set(to, from->ptr, (size_t)(id_start - from->ptr));
git_buf_put(to, "$Id: ", 5);
git_buf_put(to, oid, GIT_OID_HEXSZ);
git_buf_putc(to, '$');
git_buf_put(to, id_end, (size_t)(from_end - id_end));
return git_buf_oom(to) ? -1 : 0;
}
static int refspec_transform(
git_buf *out, const char *from, const char *to, const char *name)
{
const char *from_star, *to_star;
size_t replacement_len, star_offset;
git_buf_sanitize(out);
git_buf_clear(out);
/*
* There are two parts to each side of a refspec, the bit
* before the star and the bit after it. The star can be in
* the middle of the pattern, so we need to look at each bit
* individually.
*/
from_star = strchr(from, '*');
to_star = strchr(to, '*');
assert(from_star && to_star);
/* star offset, both in 'from' and in 'name' */
star_offset = from_star - from;
/* the first half is copied over */
git_buf_put(out, to, to_star - to);
/*
* Copy over the name, but exclude the trailing part in "from" starting
* after the glob
*/
replacement_len = strlen(name + star_offset) - strlen(from_star + 1);
git_buf_put(out, name + star_offset, replacement_len);
return git_buf_puts(out, to_star + 1);
}
int git_commit_header_field(git_buf *out, const git_commit *commit, const char *field)
{
const char *eol, *buf = commit->raw_header;
git_buf_clear(out);
while ((eol = strchr(buf, '\n'))) {
/* We can skip continuations here */
if (buf[0] == ' ') {
buf = eol + 1;
continue;
}
/* Skip until we find the field we're after */
if (git__prefixcmp(buf, field)) {
buf = eol + 1;
continue;
}
buf += strlen(field);
/* Check that we're not matching a prefix but the field itself */
if (buf[0] != ' ') {
buf = eol + 1;
continue;
}
buf++; /* skip the SP */
git_buf_put(out, buf, eol - buf);
if (git_buf_oom(out))
goto oom;
/* If the next line starts with SP, it's multi-line, we must continue */
while (eol[1] == ' ') {
git_buf_putc(out, '\n');
buf = eol + 2;
eol = strchr(buf, '\n');
if (!eol)
goto malformed;
git_buf_put(out, buf, eol - buf);
}
if (git_buf_oom(out))
goto oom;
return 0;
}
giterr_set(GITERR_OBJECT, "no such field '%s'", field);
return GIT_ENOTFOUND;
malformed:
giterr_set(GITERR_OBJECT, "malformed header");
return -1;
oom:
giterr_set_oom();
return -1;
}
int git_commit_header_field(git_buf *out, const git_commit *commit, const char *field)
{
const char *buf = commit->raw_header;
const char *h, *eol;
git_buf_sanitize(out);
while ((h = strchr(buf, '\n')) && h[1] != '\0' && h[1] != '\n') {
h++;
if (git__prefixcmp(h, field)) {
buf = h;
continue;
}
h += strlen(field);
eol = strchr(h, '\n');
if (h[0] != ' ') {
buf = h;
continue;
}
if (!eol)
goto malformed;
h++; /* skip the SP */
git_buf_put(out, h, eol - h);
if (git_buf_oom(out))
goto oom;
/* If the next line starts with SP, it's multi-line, we must continue */
while (eol[1] == ' ') {
git_buf_putc(out, '\n');
h = eol + 2;
eol = strchr(h, '\n');
if (!eol)
goto malformed;
git_buf_put(out, h, eol - h);
}
if (git_buf_oom(out))
goto oom;
return 0;
}
return GIT_ENOTFOUND;
malformed:
giterr_set(GITERR_OBJECT, "malformed header");
return -1;
oom:
giterr_set_oom();
return -1;
}
static int prepare_worktree_commit_message(
git_buf* msg,
const char *user_message)
{
git_buf buf = GIT_BUF_INIT;
int error;
if ((error = git_buf_set(&buf, git_buf_cstr(msg), git_buf_len(msg))) < 0)
return error;
git_buf_clear(msg);
if (!user_message)
git_buf_printf(msg, "WIP on %s", git_buf_cstr(&buf));
else {
const char *colon;
if ((colon = strchr(git_buf_cstr(&buf), ':')) == NULL)
goto cleanup;
git_buf_puts(msg, "On ");
git_buf_put(msg, git_buf_cstr(&buf), colon - buf.ptr);
git_buf_printf(msg, ": %s\n", user_message);
}
error = (git_buf_oom(msg) || git_buf_oom(&buf)) ? -1 : 0;
cleanup:
git_buf_free(&buf);
return error;
}
int git_futils_cleanupdir_r(const char *path)
{
int error;
git_buf fullpath = GIT_BUF_INIT;
futils__rmdir_data data;
if ((error = git_buf_put(&fullpath, path, strlen(path))) < 0)
goto clean_up;
data.base = "";
data.baselen = 0;
data.flags = GIT_RMDIR_REMOVE_FILES;
data.error = 0;
if (!git_path_exists(path)) {
giterr_set(GITERR_OS, "Path does not exist: %s" , path);
error = GIT_ERROR;
goto clean_up;
}
if (!git_path_isdir(path)) {
giterr_set(GITERR_OS, "Path is not a directory: %s" , path);
error = GIT_ERROR;
goto clean_up;
}
error = git_path_direach(&fullpath, futils__rmdir_recurs_foreach, &data);
if (error == GIT_EUSER)
error = data.error;
clean_up:
git_buf_free(&fullpath);
return error;
}
const char *git_commit_summary(git_commit *commit)
{
git_buf summary = GIT_BUF_INIT;
const char *msg, *space;
assert(commit);
if (!commit->summary) {
for (msg = git_commit_message(commit), space = NULL; *msg; ++msg) {
if (msg[0] == '\n' && (!msg[1] || msg[1] == '\n'))
break;
else if (msg[0] == '\n')
git_buf_putc(&summary, ' ');
else if (git__isspace(msg[0]))
space = space ? space : msg;
else if (space) {
git_buf_put(&summary, space, (msg - space) + 1);
space = NULL;
} else
git_buf_putc(&summary, *msg);
}
commit->summary = git_buf_detach(&summary);
if (!commit->summary)
commit->summary = git__strdup("");
}
return commit->summary;
}
/*
* Create a git protocol request.
*
* For example: 0035git-upload-pack /libgit2/libgit2\0host=github.com\0
*/
static int gen_proto(git_buf *request, const char *cmd, const char *url)
{
char *delim, *repo;
char host[] = "host=";
size_t len;
delim = strchr(url, '/');
if (delim == NULL) {
giterr_set(GITERR_NET, "Malformed URL");
return -1;
}
repo = delim;
delim = strchr(url, ':');
if (delim == NULL)
delim = strchr(url, '/');
len = 4 + strlen(cmd) + 1 + strlen(repo) + 1 + strlen(host) + (delim - url) + 1;
git_buf_grow(request, len);
git_buf_printf(request, "%04x%s %s%c%s",
(unsigned int)(len & 0x0FFFF), cmd, repo, 0, host);
git_buf_put(request, url, delim - url);
git_buf_putc(request, '\0');
if (git_buf_oom(request))
return -1;
return 0;
}
static int refspec_transform(
git_buf *out, const char *from, const char *to, const char *name)
{
size_t to_len = to ? strlen(to) : 0;
size_t from_len = from ? strlen(from) : 0;
size_t name_len = name ? strlen(name) : 0;
git_buf_sanitize(out);
if (git_buf_set(out, to, to_len) < 0)
return -1;
if (to_len > 0) {
/* No '*' at the end of 'to' means that refspec is mapped to one
* specific branch, so no actual transformation is needed.
*/
if (out->ptr[to_len - 1] != '*')
return 0;
git_buf_shorten(out, 1); /* remove trailing '*' copied from 'to' */
}
if (from_len > 0) /* ignore trailing '*' from 'from' */
from_len--;
if (from_len > name_len)
from_len = name_len;
return git_buf_put(out, name + from_len, name_len - from_len);
}
void test_clone_nonetwork__do_not_clean_existing_directory(void)
{
git_buf path_buf = GIT_BUF_INIT;
git_buf_put(&path_buf, "./foo", 5);
/* Clone should not remove the directory if it already exists, but
* Should clean up entries it creates. */
p_mkdir("./foo", GIT_DIR_MODE);
cl_git_fail(git_clone(&g_repo, "not_a_repo", "./foo", &g_options));
cl_assert(git_path_exists("./foo"));
/* Make sure the directory is empty. */
cl_git_pass(git_path_direach(&path_buf,
dont_call_me,
NULL));
/* Try again with a bare repository. */
g_options.bare = true;
cl_git_fail(git_clone(&g_repo, "not_a_repo", "./foo", &g_options));
cl_assert(git_path_exists("./foo"));
/* Make sure the directory is empty. */
cl_git_pass(git_path_direach(&path_buf,
dont_call_me,
NULL));
git_buf_free(&path_buf);
}
void test_repo_init__at_filesystem_root(void)
{
git_repository *repo;
const char *sandbox = clar_sandbox_path();
git_buf root = GIT_BUF_INIT;
int root_len;
if (!cl_is_env_set("GITTEST_INVASIVE_FS_STRUCTURE"))
cl_skip();
root_len = git_path_root(sandbox);
cl_assert(root_len >= 0);
git_buf_put(&root, sandbox, root_len+1);
git_buf_joinpath(&root, root.ptr, "libgit2_test_dir");
cl_assert(!git_path_exists(root.ptr));
cl_git_pass(git_repository_init(&repo, root.ptr, 0));
cl_assert(git_path_isdir(root.ptr));
cl_git_pass(git_futils_rmdir_r(root.ptr, NULL, GIT_RMDIR_REMOVE_FILES));
git_buf_free(&root);
git_repository_free(repo);
}
static int on_header_field(http_parser *parser, const char *str, size_t len)
{
transport_http *t = (transport_http *) parser->data;
git_buf *buf = &t->buf;
if (t->last_cb == VALUE && t->ct_found) {
t->ct_finished = 1;
t->ct_found = 0;
t->content_type = git__strdup(git_buf_cstr(buf));
GITERR_CHECK_ALLOC(t->content_type);
git_buf_clear(buf);
}
if (t->ct_found) {
t->last_cb = FIELD;
return 0;
}
if (t->last_cb != FIELD)
git_buf_clear(buf);
git_buf_put(buf, str, len);
t->last_cb = FIELD;
return git_buf_oom(buf);
}
static int ensure_base_rev_loaded(git_object **object, git_reference **reference, const char *spec, size_t identifier_len, git_repository *repo, bool allow_empty_identifier)
{
int error;
git_buf identifier = GIT_BUF_INIT;
if (*object != NULL)
return 0;
if (*reference != NULL) {
if ((error = object_from_reference(object, *reference)) < 0)
return error;
git_reference_free(*reference);
*reference = NULL;
return 0;
}
if (!allow_empty_identifier && identifier_len == 0)
return revspec_error(spec);
if (git_buf_put(&identifier, spec, identifier_len) < 0)
return -1;
error = revparse_lookup_object(object, repo, git_buf_cstr(&identifier));
git_buf_free(&identifier);
return error;
}
static int print_cb(
const git_diff_delta *delta,
const git_diff_hunk *hunk,
const git_diff_line *line,
void *payload)
{
git_buf *buf = (git_buf *)payload;
GIT_UNUSED(delta);
if (hunk)
git_buf_put(buf, hunk->header, hunk->header_len);
if (line)
git_buf_put(buf, line->content, line->content_len);
return git_buf_oom(buf) ? -1 : 0;
}
static int on_body_parse_response(http_parser *parser, const char *str, size_t len)
{
transport_http *t = (transport_http *) parser->data;
git_buf *buf = &t->buf;
git_vector *common = &t->common;
int error;
const char *line_end, *ptr;
if (len == 0) { /* EOF */
if (git_buf_len(buf) != 0) {
giterr_set(GITERR_NET, "Unexpected EOF");
return t->error = -1;
} else {
return 0;
}
}
git_buf_put(buf, str, len);
ptr = buf->ptr;
while (1) {
git_pkt *pkt;
if (git_buf_len(buf) == 0)
return 0;
error = git_pkt_parse_line(&pkt, ptr, &line_end, git_buf_len(buf));
if (error == GIT_EBUFS) {
return 0; /* Ask for more */
}
if (error < 0)
return t->error = -1;
git_buf_consume(buf, line_end);
if (pkt->type == GIT_PKT_PACK) {
git__free(pkt);
t->pack_ready = 1;
return 0;
}
if (pkt->type == GIT_PKT_NAK) {
git__free(pkt);
return 0;
}
if (pkt->type != GIT_PKT_ACK) {
git__free(pkt);
continue;
}
if (git_vector_insert(common, pkt) < 0)
return -1;
}
return error;
}
static int on_body_store_refs(http_parser *parser, const char *str, size_t len)
{
transport_http *t = (transport_http *) parser->data;
if (parser->status_code == 404) {
return git_buf_put(&t->buf, str, len);
}
return git_protocol_store_refs(&t->proto, str, len);
}
static int refspec_transform(
git_buf *out, const char *from, const char *to, const char *name)
{
const char *from_star, *to_star;
const char *name_slash, *from_slash;
size_t replacement_len, star_offset;
git_buf_sanitize(out);
git_buf_clear(out);
/*
* There are two parts to each side of a refspec, the bit
* before the star and the bit after it. The star can be in
* the middle of the pattern, so we need to look at each bit
* individually.
*/
from_star = strchr(from, '*');
to_star = strchr(to, '*');
assert(from_star && to_star);
/* star offset, both in 'from' and in 'name' */
star_offset = from_star - from;
/* the first half is copied over */
git_buf_put(out, to, to_star - to);
/* then we copy over the replacement, from the star's offset to the next slash in 'name' */
name_slash = strchr(name + star_offset, '/');
if (!name_slash)
name_slash = strrchr(name, '\0');
/* if there is no slash after the star in 'from', we want to copy everything over */
from_slash = strchr(from + star_offset, '/');
if (!from_slash)
name_slash = strrchr(name, '\0');
replacement_len = (name_slash - name) - star_offset;
git_buf_put(out, name + star_offset, replacement_len);
return git_buf_puts(out, to_star + 1);
}
static int command_readall(HANDLE handle, git_buf *buf)
{
size_t bytes_read = 0;
do {
char buffer[65536];
command_read(handle, buffer, sizeof(buffer), &bytes_read);
git_buf_put(buf, buffer, bytes_read);
} while (bytes_read);
return 0;
}
static int expandPerCentF(git_buf *buf, const char *replaceWith)
{
ssize_t foundPercentage = git_buf_find(buf, '%');
if (foundPercentage) {
git_buf expanded = GIT_BUF_INIT;
const char *end = buf->ptr + buf->size;
const char *lastPercentage = buf->ptr;
const char *idx = buf->ptr + foundPercentage;
while (idx < end) {
if (*idx == '%') {
if (idx + 1 == end || (idx + 1 < end && *(idx + 1) == '%')) { // one '%' is at the end of the string OR "%%" is in the string
git_buf_putc(&expanded, '%');
++idx;
++idx;
lastPercentage = idx;
continue;
}
// now we know, that we're not at the end of the string and that the next char is not '%'
git_buf_put(&expanded, lastPercentage, idx - lastPercentage);
++idx;
if (*idx == 'f')
git_buf_printf(&expanded, "\"%s\"", replaceWith);
++idx;
lastPercentage = idx;
continue;
}
++idx;
}
if (lastPercentage)
git_buf_put(&expanded, lastPercentage, idx - lastPercentage);
if (git_buf_oom(&expanded))
{
giterr_set_oom();
return -1;
}
git_buf_swap(buf, &expanded);
git_buf_free(&expanded);
}
return 0;
}
static int append_abbreviated_oid(git_buf *out, const git_oid *b_commit)
{
char *formatted_oid;
formatted_oid = git_oid_allocfmt(b_commit);
GITERR_CHECK_ALLOC(formatted_oid);
git_buf_put(out, formatted_oid, 7);
git__free(formatted_oid);
return git_buf_oom(out) ? -1 : 0;
}
static int ident_remove_id(
git_buf *to, const git_buf *from)
{
const char *id_start, *id_end, *from_end = from->ptr + from->size;
size_t need_size;
if (ident_find_id(&id_start, &id_end, from->ptr, from->size) < 0)
return GIT_PASSTHROUGH;
need_size = (size_t)(id_start - from->ptr) +
4 /* "$Id$" */ + (size_t)(from_end - id_end);
if (git_buf_grow(to, need_size) < 0)
return -1;
git_buf_set(to, from->ptr, (size_t)(id_start - from->ptr));
git_buf_put(to, "$Id$", 4);
git_buf_put(to, id_end, (size_t)(from_end - id_end));
return git_buf_oom(to) ? -1 : 0;
}
static void write_tree(git_buf *out, git_tree_cache *tree)
{
size_t i;
git_buf_printf(out, "%s%c%"PRIdZ" %"PRIuZ"\n", tree->name, 0, tree->entry_count, tree->children_count);
if (tree->entry_count != -1)
git_buf_put(out, (const char *) &tree->oid, GIT_OID_RAWSZ);
for (i = 0; i < tree->children_count; i++)
write_tree(out, tree->children[i]);
}
static int diff_print_to_buffer_cb(
const git_diff_delta *delta,
const git_diff_range *range,
char line_origin,
const char *content,
size_t content_len,
void *payload)
{
git_buf *output = payload;
GIT_UNUSED(delta); GIT_UNUSED(range); GIT_UNUSED(line_origin);
return git_buf_put(output, content, content_len);
}
static int on_header_value(http_parser *parser, const char *str, size_t len)
{
transport_http *t = (transport_http *) parser->data;
git_buf *buf = &t->buf;
if (t->ct_finished) {
t->last_cb = VALUE;
return 0;
}
if (t->last_cb == VALUE)
git_buf_put(buf, str, len);
if (t->last_cb == FIELD && !strcmp(git_buf_cstr(buf), typestr)) {
t->ct_found = 1;
git_buf_clear(buf);
git_buf_put(buf, str, len);
}
t->last_cb = VALUE;
return git_buf_oom(buf);
}
static int on_header_value(http_parser *parser, const char *str, size_t len)
{
parser_context *ctx = (parser_context *) parser->data;
http_subtransport *t = ctx->t;
assert(NONE != t->last_cb);
if (FIELD == t->last_cb)
git_buf_clear(&t->parse_header_value);
if (git_buf_put(&t->parse_header_value, str, len) < 0)
return t->parse_error = PARSE_ERROR_GENERIC;
t->last_cb = VALUE;
return 0;
}
int git_path_diriter_next(git_path_diriter *diriter)
{
struct dirent *de;
const char *filename;
size_t filename_len;
bool skip_dot = !(diriter->flags & GIT_PATH_DIR_INCLUDE_DOT_AND_DOTDOT);
int error = 0;
assert(diriter);
errno = 0;
do {
if ((de = readdir(diriter->dir)) == NULL) {
if (!errno)
return GIT_ITEROVER;
giterr_set(GITERR_OS,
"Could not read directory '%s'", diriter->path);
return -1;
}
} while (skip_dot && git_path_is_dot_or_dotdot(de->d_name));
filename = de->d_name;
filename_len = strlen(filename);
#ifdef GIT_USE_ICONV
if ((diriter->flags & GIT_PATH_DIR_PRECOMPOSE_UNICODE) != 0 &&
(error = git_path_iconv(&diriter->ic, &filename, &filename_len)) < 0)
return error;
#endif
git_buf_truncate(&diriter->path, diriter->parent_len);
if (diriter->parent_len > 0 &&
diriter->path.ptr[diriter->parent_len-1] != '/')
git_buf_putc(&diriter->path, '/');
git_buf_put(&diriter->path, filename, filename_len);
if (git_buf_oom(&diriter->path))
return -1;
return error;
}
int git_buf_text_lf_to_crlf(git_buf *tgt, const git_buf *src)
{
const char *start = src->ptr;
const char *end = start + src->size;
const char *scan = start;
const char *next = memchr(scan, '\n', src->size);
size_t alloclen;
assert(tgt != src);
if (!next)
return git_buf_set(tgt, src->ptr, src->size);
/* attempt to reduce reallocs while in the loop */
GITERR_CHECK_ALLOC_ADD(&alloclen, src->size, src->size >> 4);
GITERR_CHECK_ALLOC_ADD(&alloclen, alloclen, 1);
if (git_buf_grow(tgt, alloclen) < 0)
return -1;
tgt->size = 0;
for (; next; scan = next + 1, next = memchr(scan, '\n', end - scan)) {
size_t copylen = next - scan;
/* if we find mixed line endings, bail */
if (next > start && next[-1] == '\r') {
git_buf_free(tgt);
return GIT_PASSTHROUGH;
}
GITERR_CHECK_ALLOC_ADD(&alloclen, copylen, 3);
if (git_buf_grow_by(tgt, alloclen) < 0)
return -1;
if (next > scan) {
memcpy(tgt->ptr + tgt->size, scan, copylen);
tgt->size += copylen;
}
tgt->ptr[tgt->size++] = '\r';
tgt->ptr[tgt->size++] = '\n';
}
tgt->ptr[tgt->size] = '\0';
return git_buf_put(tgt, scan, end - scan);
}
/**
* Append to 'out' properly marking continuations when there's a newline in 'content'
*/
static void format_header_field(git_buf *out, const char *field, const char *content)
{
const char *lf;
assert(out && field && content);
git_buf_puts(out, field);
git_buf_putc(out, ' ');
while ((lf = strchr(content, '\n')) != NULL) {
git_buf_put(out, content, lf - content);
git_buf_puts(out, "\n ");
content = lf + 1;
}
git_buf_puts(out, content);
git_buf_putc(out, '\n');
}