mirror of
https://github.com/git/git
synced 2024-10-30 04:01:21 +00:00
b2a5627651
A wildcard refspec is internally parsed into a refspec structure with src and dst strings. Many parts of the code assumed that these do not include the trailing "/*" when matching the wildcard pattern with an actual ref we see at the remote. What this meant was that we needed to make sure not just that the prefix matched, and also that a slash followed the part that matched. But a codepath that scans the result from ls-remote and finds matching refs forgot to check the "matching part must be followed by a slash" rule. This resulted in "refs/heads/b1" from the remote side to mistakenly match the source side of "refs/heads/b/*:refs/remotes/b/*" refspec. Worse, the refspec crafted internally by "git-clone", and a hardcoded preparsed refspec that is used to implement "git-fetch --tags", violated this "parsed widcard refspec does not end with slash" rule; simply adding the "matching part must be followed by a slash" rule then would have broken codepaths that use these refspecs. This commit changes the rule to require a trailing slash to parsed wildcard refspecs. IOW, "refs/heads/b/*:refs/remotes/b/*" is parsed as src = "refs/heads/b/" and dst = "refs/remotes/b/". This allows us to simplify the matching logic because we only need to do a prefixcmp() to notice "refs/heads/b/one" matches and "refs/heads/b1" does not. Acked-by: Daniel Barkalow <barkalow@iabervon.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
1240 lines
29 KiB
C
1240 lines
29 KiB
C
#include "cache.h"
|
|
#include "remote.h"
|
|
#include "refs.h"
|
|
|
|
static struct refspec s_tag_refspec = {
|
|
0,
|
|
1,
|
|
0,
|
|
"refs/tags/",
|
|
"refs/tags/"
|
|
};
|
|
|
|
const struct refspec *tag_refspec = &s_tag_refspec;
|
|
|
|
struct counted_string {
|
|
size_t len;
|
|
const char *s;
|
|
};
|
|
struct rewrite {
|
|
const char *base;
|
|
size_t baselen;
|
|
struct counted_string *instead_of;
|
|
int instead_of_nr;
|
|
int instead_of_alloc;
|
|
};
|
|
|
|
static struct remote **remotes;
|
|
static int remotes_alloc;
|
|
static int remotes_nr;
|
|
|
|
static struct branch **branches;
|
|
static int branches_alloc;
|
|
static int branches_nr;
|
|
|
|
static struct branch *current_branch;
|
|
static const char *default_remote_name;
|
|
|
|
static struct rewrite **rewrite;
|
|
static int rewrite_alloc;
|
|
static int rewrite_nr;
|
|
|
|
#define BUF_SIZE (2048)
|
|
static char buffer[BUF_SIZE];
|
|
|
|
static const char *alias_url(const char *url)
|
|
{
|
|
int i, j;
|
|
char *ret;
|
|
struct counted_string *longest;
|
|
int longest_i;
|
|
|
|
longest = NULL;
|
|
longest_i = -1;
|
|
for (i = 0; i < rewrite_nr; i++) {
|
|
if (!rewrite[i])
|
|
continue;
|
|
for (j = 0; j < rewrite[i]->instead_of_nr; j++) {
|
|
if (!prefixcmp(url, rewrite[i]->instead_of[j].s) &&
|
|
(!longest ||
|
|
longest->len < rewrite[i]->instead_of[j].len)) {
|
|
longest = &(rewrite[i]->instead_of[j]);
|
|
longest_i = i;
|
|
}
|
|
}
|
|
}
|
|
if (!longest)
|
|
return url;
|
|
|
|
ret = malloc(rewrite[longest_i]->baselen +
|
|
(strlen(url) - longest->len) + 1);
|
|
strcpy(ret, rewrite[longest_i]->base);
|
|
strcpy(ret + rewrite[longest_i]->baselen, url + longest->len);
|
|
return ret;
|
|
}
|
|
|
|
static void add_push_refspec(struct remote *remote, const char *ref)
|
|
{
|
|
ALLOC_GROW(remote->push_refspec,
|
|
remote->push_refspec_nr + 1,
|
|
remote->push_refspec_alloc);
|
|
remote->push_refspec[remote->push_refspec_nr++] = ref;
|
|
}
|
|
|
|
static void add_fetch_refspec(struct remote *remote, const char *ref)
|
|
{
|
|
ALLOC_GROW(remote->fetch_refspec,
|
|
remote->fetch_refspec_nr + 1,
|
|
remote->fetch_refspec_alloc);
|
|
remote->fetch_refspec[remote->fetch_refspec_nr++] = ref;
|
|
}
|
|
|
|
static void add_url(struct remote *remote, const char *url)
|
|
{
|
|
ALLOC_GROW(remote->url, remote->url_nr + 1, remote->url_alloc);
|
|
remote->url[remote->url_nr++] = url;
|
|
}
|
|
|
|
static void add_url_alias(struct remote *remote, const char *url)
|
|
{
|
|
add_url(remote, alias_url(url));
|
|
}
|
|
|
|
static struct remote *make_remote(const char *name, int len)
|
|
{
|
|
struct remote *ret;
|
|
int i;
|
|
|
|
for (i = 0; i < remotes_nr; i++) {
|
|
if (len ? (!strncmp(name, remotes[i]->name, len) &&
|
|
!remotes[i]->name[len]) :
|
|
!strcmp(name, remotes[i]->name))
|
|
return remotes[i];
|
|
}
|
|
|
|
ret = xcalloc(1, sizeof(struct remote));
|
|
ALLOC_GROW(remotes, remotes_nr + 1, remotes_alloc);
|
|
remotes[remotes_nr++] = ret;
|
|
if (len)
|
|
ret->name = xstrndup(name, len);
|
|
else
|
|
ret->name = xstrdup(name);
|
|
return ret;
|
|
}
|
|
|
|
static void add_merge(struct branch *branch, const char *name)
|
|
{
|
|
ALLOC_GROW(branch->merge_name, branch->merge_nr + 1,
|
|
branch->merge_alloc);
|
|
branch->merge_name[branch->merge_nr++] = name;
|
|
}
|
|
|
|
static struct branch *make_branch(const char *name, int len)
|
|
{
|
|
struct branch *ret;
|
|
int i;
|
|
char *refname;
|
|
|
|
for (i = 0; i < branches_nr; i++) {
|
|
if (len ? (!strncmp(name, branches[i]->name, len) &&
|
|
!branches[i]->name[len]) :
|
|
!strcmp(name, branches[i]->name))
|
|
return branches[i];
|
|
}
|
|
|
|
ALLOC_GROW(branches, branches_nr + 1, branches_alloc);
|
|
ret = xcalloc(1, sizeof(struct branch));
|
|
branches[branches_nr++] = ret;
|
|
if (len)
|
|
ret->name = xstrndup(name, len);
|
|
else
|
|
ret->name = xstrdup(name);
|
|
refname = malloc(strlen(name) + strlen("refs/heads/") + 1);
|
|
strcpy(refname, "refs/heads/");
|
|
strcpy(refname + strlen("refs/heads/"), ret->name);
|
|
ret->refname = refname;
|
|
|
|
return ret;
|
|
}
|
|
|
|
static struct rewrite *make_rewrite(const char *base, int len)
|
|
{
|
|
struct rewrite *ret;
|
|
int i;
|
|
|
|
for (i = 0; i < rewrite_nr; i++) {
|
|
if (len
|
|
? (len == rewrite[i]->baselen &&
|
|
!strncmp(base, rewrite[i]->base, len))
|
|
: !strcmp(base, rewrite[i]->base))
|
|
return rewrite[i];
|
|
}
|
|
|
|
ALLOC_GROW(rewrite, rewrite_nr + 1, rewrite_alloc);
|
|
ret = xcalloc(1, sizeof(struct rewrite));
|
|
rewrite[rewrite_nr++] = ret;
|
|
if (len) {
|
|
ret->base = xstrndup(base, len);
|
|
ret->baselen = len;
|
|
}
|
|
else {
|
|
ret->base = xstrdup(base);
|
|
ret->baselen = strlen(base);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static void add_instead_of(struct rewrite *rewrite, const char *instead_of)
|
|
{
|
|
ALLOC_GROW(rewrite->instead_of, rewrite->instead_of_nr + 1, rewrite->instead_of_alloc);
|
|
rewrite->instead_of[rewrite->instead_of_nr].s = instead_of;
|
|
rewrite->instead_of[rewrite->instead_of_nr].len = strlen(instead_of);
|
|
rewrite->instead_of_nr++;
|
|
}
|
|
|
|
static void read_remotes_file(struct remote *remote)
|
|
{
|
|
FILE *f = fopen(git_path("remotes/%s", remote->name), "r");
|
|
|
|
if (!f)
|
|
return;
|
|
while (fgets(buffer, BUF_SIZE, f)) {
|
|
int value_list;
|
|
char *s, *p;
|
|
|
|
if (!prefixcmp(buffer, "URL:")) {
|
|
value_list = 0;
|
|
s = buffer + 4;
|
|
} else if (!prefixcmp(buffer, "Push:")) {
|
|
value_list = 1;
|
|
s = buffer + 5;
|
|
} else if (!prefixcmp(buffer, "Pull:")) {
|
|
value_list = 2;
|
|
s = buffer + 5;
|
|
} else
|
|
continue;
|
|
|
|
while (isspace(*s))
|
|
s++;
|
|
if (!*s)
|
|
continue;
|
|
|
|
p = s + strlen(s);
|
|
while (isspace(p[-1]))
|
|
*--p = 0;
|
|
|
|
switch (value_list) {
|
|
case 0:
|
|
add_url_alias(remote, xstrdup(s));
|
|
break;
|
|
case 1:
|
|
add_push_refspec(remote, xstrdup(s));
|
|
break;
|
|
case 2:
|
|
add_fetch_refspec(remote, xstrdup(s));
|
|
break;
|
|
}
|
|
}
|
|
fclose(f);
|
|
}
|
|
|
|
static void read_branches_file(struct remote *remote)
|
|
{
|
|
const char *slash = strchr(remote->name, '/');
|
|
char *frag;
|
|
struct strbuf branch;
|
|
int n = slash ? slash - remote->name : 1000;
|
|
FILE *f = fopen(git_path("branches/%.*s", n, remote->name), "r");
|
|
char *s, *p;
|
|
int len;
|
|
|
|
if (!f)
|
|
return;
|
|
s = fgets(buffer, BUF_SIZE, f);
|
|
fclose(f);
|
|
if (!s)
|
|
return;
|
|
while (isspace(*s))
|
|
s++;
|
|
if (!*s)
|
|
return;
|
|
p = s + strlen(s);
|
|
while (isspace(p[-1]))
|
|
*--p = 0;
|
|
len = p - s;
|
|
if (slash)
|
|
len += strlen(slash);
|
|
p = xmalloc(len + 1);
|
|
strcpy(p, s);
|
|
if (slash)
|
|
strcat(p, slash);
|
|
|
|
/*
|
|
* With "slash", e.g. "git fetch jgarzik/netdev-2.6" when
|
|
* reading from $GIT_DIR/branches/jgarzik fetches "HEAD" from
|
|
* the partial URL obtained from the branches file plus
|
|
* "/netdev-2.6" and does not store it in any tracking ref.
|
|
* #branch specifier in the file is ignored.
|
|
*
|
|
* Otherwise, the branches file would have URL and optionally
|
|
* #branch specified. The "master" (or specified) branch is
|
|
* fetched and stored in the local branch of the same name.
|
|
*/
|
|
strbuf_init(&branch, 0);
|
|
frag = strchr(p, '#');
|
|
if (frag) {
|
|
*(frag++) = '\0';
|
|
strbuf_addf(&branch, "refs/heads/%s", frag);
|
|
} else
|
|
strbuf_addstr(&branch, "refs/heads/master");
|
|
if (!slash) {
|
|
strbuf_addf(&branch, ":refs/heads/%s", remote->name);
|
|
} else {
|
|
strbuf_reset(&branch);
|
|
strbuf_addstr(&branch, "HEAD:");
|
|
}
|
|
add_url_alias(remote, p);
|
|
add_fetch_refspec(remote, strbuf_detach(&branch, 0));
|
|
remote->fetch_tags = 1; /* always auto-follow */
|
|
}
|
|
|
|
static int handle_config(const char *key, const char *value, void *cb)
|
|
{
|
|
const char *name;
|
|
const char *subkey;
|
|
struct remote *remote;
|
|
struct branch *branch;
|
|
if (!prefixcmp(key, "branch.")) {
|
|
name = key + 7;
|
|
subkey = strrchr(name, '.');
|
|
if (!subkey)
|
|
return 0;
|
|
branch = make_branch(name, subkey - name);
|
|
if (!strcmp(subkey, ".remote")) {
|
|
if (!value)
|
|
return config_error_nonbool(key);
|
|
branch->remote_name = xstrdup(value);
|
|
if (branch == current_branch)
|
|
default_remote_name = branch->remote_name;
|
|
} else if (!strcmp(subkey, ".merge")) {
|
|
if (!value)
|
|
return config_error_nonbool(key);
|
|
add_merge(branch, xstrdup(value));
|
|
}
|
|
return 0;
|
|
}
|
|
if (!prefixcmp(key, "url.")) {
|
|
struct rewrite *rewrite;
|
|
name = key + 4;
|
|
subkey = strrchr(name, '.');
|
|
if (!subkey)
|
|
return 0;
|
|
rewrite = make_rewrite(name, subkey - name);
|
|
if (!strcmp(subkey, ".insteadof")) {
|
|
if (!value)
|
|
return config_error_nonbool(key);
|
|
add_instead_of(rewrite, xstrdup(value));
|
|
}
|
|
}
|
|
if (prefixcmp(key, "remote."))
|
|
return 0;
|
|
name = key + 7;
|
|
subkey = strrchr(name, '.');
|
|
if (!subkey)
|
|
return error("Config with no key for remote %s", name);
|
|
if (*subkey == '/') {
|
|
warning("Config remote shorthand cannot begin with '/': %s", name);
|
|
return 0;
|
|
}
|
|
remote = make_remote(name, subkey - name);
|
|
if (!strcmp(subkey, ".mirror"))
|
|
remote->mirror = git_config_bool(key, value);
|
|
else if (!strcmp(subkey, ".skipdefaultupdate"))
|
|
remote->skip_default_update = git_config_bool(key, value);
|
|
|
|
else if (!strcmp(subkey, ".url")) {
|
|
const char *v;
|
|
if (git_config_string(&v, key, value))
|
|
return -1;
|
|
add_url(remote, v);
|
|
} else if (!strcmp(subkey, ".push")) {
|
|
const char *v;
|
|
if (git_config_string(&v, key, value))
|
|
return -1;
|
|
add_push_refspec(remote, v);
|
|
} else if (!strcmp(subkey, ".fetch")) {
|
|
const char *v;
|
|
if (git_config_string(&v, key, value))
|
|
return -1;
|
|
add_fetch_refspec(remote, v);
|
|
} else if (!strcmp(subkey, ".receivepack")) {
|
|
const char *v;
|
|
if (git_config_string(&v, key, value))
|
|
return -1;
|
|
if (!remote->receivepack)
|
|
remote->receivepack = v;
|
|
else
|
|
error("more than one receivepack given, using the first");
|
|
} else if (!strcmp(subkey, ".uploadpack")) {
|
|
const char *v;
|
|
if (git_config_string(&v, key, value))
|
|
return -1;
|
|
if (!remote->uploadpack)
|
|
remote->uploadpack = v;
|
|
else
|
|
error("more than one uploadpack given, using the first");
|
|
} else if (!strcmp(subkey, ".tagopt")) {
|
|
if (!strcmp(value, "--no-tags"))
|
|
remote->fetch_tags = -1;
|
|
} else if (!strcmp(subkey, ".proxy")) {
|
|
return git_config_string((const char **)&remote->http_proxy,
|
|
key, value);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void alias_all_urls(void)
|
|
{
|
|
int i, j;
|
|
for (i = 0; i < remotes_nr; i++) {
|
|
if (!remotes[i])
|
|
continue;
|
|
for (j = 0; j < remotes[i]->url_nr; j++) {
|
|
remotes[i]->url[j] = alias_url(remotes[i]->url[j]);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void read_config(void)
|
|
{
|
|
unsigned char sha1[20];
|
|
const char *head_ref;
|
|
int flag;
|
|
if (default_remote_name) // did this already
|
|
return;
|
|
default_remote_name = xstrdup("origin");
|
|
current_branch = NULL;
|
|
head_ref = resolve_ref("HEAD", sha1, 0, &flag);
|
|
if (head_ref && (flag & REF_ISSYMREF) &&
|
|
!prefixcmp(head_ref, "refs/heads/")) {
|
|
current_branch =
|
|
make_branch(head_ref + strlen("refs/heads/"), 0);
|
|
}
|
|
git_config(handle_config, NULL);
|
|
alias_all_urls();
|
|
}
|
|
|
|
/*
|
|
* We need to make sure the tracking branches are well formed, but a
|
|
* wildcard refspec in "struct refspec" must have a trailing slash. We
|
|
* temporarily drop the trailing '/' while calling check_ref_format(),
|
|
* and put it back. The caller knows that a CHECK_REF_FORMAT_ONELEVEL
|
|
* error return is Ok for a wildcard refspec.
|
|
*/
|
|
static int verify_refname(char *name, int is_glob)
|
|
{
|
|
int result, len = -1;
|
|
|
|
if (is_glob) {
|
|
len = strlen(name);
|
|
assert(name[len - 1] == '/');
|
|
name[len - 1] = '\0';
|
|
}
|
|
result = check_ref_format(name);
|
|
if (is_glob)
|
|
name[len - 1] = '/';
|
|
return result;
|
|
}
|
|
|
|
static struct refspec *parse_refspec_internal(int nr_refspec, const char **refspec, int fetch, int verify)
|
|
{
|
|
int i;
|
|
int st;
|
|
struct refspec *rs = xcalloc(sizeof(*rs), nr_refspec);
|
|
|
|
for (i = 0; i < nr_refspec; i++) {
|
|
size_t llen;
|
|
int is_glob;
|
|
const char *lhs, *rhs;
|
|
|
|
llen = is_glob = 0;
|
|
|
|
lhs = refspec[i];
|
|
if (*lhs == '+') {
|
|
rs[i].force = 1;
|
|
lhs++;
|
|
}
|
|
|
|
rhs = strrchr(lhs, ':');
|
|
|
|
/*
|
|
* Before going on, special case ":" (or "+:") as a refspec
|
|
* for matching refs.
|
|
*/
|
|
if (!fetch && rhs == lhs && rhs[1] == '\0') {
|
|
rs[i].matching = 1;
|
|
continue;
|
|
}
|
|
|
|
if (rhs) {
|
|
size_t rlen = strlen(++rhs);
|
|
is_glob = (2 <= rlen && !strcmp(rhs + rlen - 2, "/*"));
|
|
rs[i].dst = xstrndup(rhs, rlen - is_glob);
|
|
}
|
|
|
|
llen = (rhs ? (rhs - lhs - 1) : strlen(lhs));
|
|
if (2 <= llen && !memcmp(lhs + llen - 2, "/*", 2)) {
|
|
if ((rhs && !is_glob) || (!rhs && fetch))
|
|
goto invalid;
|
|
is_glob = 1;
|
|
llen--;
|
|
} else if (rhs && is_glob) {
|
|
goto invalid;
|
|
}
|
|
|
|
rs[i].pattern = is_glob;
|
|
rs[i].src = xstrndup(lhs, llen);
|
|
|
|
if (fetch) {
|
|
/*
|
|
* LHS
|
|
* - empty is allowed; it means HEAD.
|
|
* - otherwise it must be a valid looking ref.
|
|
*/
|
|
if (!*rs[i].src)
|
|
; /* empty is ok */
|
|
else {
|
|
st = verify_refname(rs[i].src, is_glob);
|
|
if (st && st != CHECK_REF_FORMAT_ONELEVEL)
|
|
goto invalid;
|
|
}
|
|
/*
|
|
* RHS
|
|
* - missing is ok, and is same as empty.
|
|
* - empty is ok; it means not to store.
|
|
* - otherwise it must be a valid looking ref.
|
|
*/
|
|
if (!rs[i].dst) {
|
|
; /* ok */
|
|
} else if (!*rs[i].dst) {
|
|
; /* ok */
|
|
} else {
|
|
st = verify_refname(rs[i].dst, is_glob);
|
|
if (st && st != CHECK_REF_FORMAT_ONELEVEL)
|
|
goto invalid;
|
|
}
|
|
} else {
|
|
/*
|
|
* LHS
|
|
* - empty is allowed; it means delete.
|
|
* - when wildcarded, it must be a valid looking ref.
|
|
* - otherwise, it must be an extended SHA-1, but
|
|
* there is no existing way to validate this.
|
|
*/
|
|
if (!*rs[i].src)
|
|
; /* empty is ok */
|
|
else if (is_glob) {
|
|
st = verify_refname(rs[i].src, is_glob);
|
|
if (st && st != CHECK_REF_FORMAT_ONELEVEL)
|
|
goto invalid;
|
|
}
|
|
else
|
|
; /* anything goes, for now */
|
|
/*
|
|
* RHS
|
|
* - missing is allowed, but LHS then must be a
|
|
* valid looking ref.
|
|
* - empty is not allowed.
|
|
* - otherwise it must be a valid looking ref.
|
|
*/
|
|
if (!rs[i].dst) {
|
|
st = verify_refname(rs[i].src, is_glob);
|
|
if (st && st != CHECK_REF_FORMAT_ONELEVEL)
|
|
goto invalid;
|
|
} else if (!*rs[i].dst) {
|
|
goto invalid;
|
|
} else {
|
|
st = verify_refname(rs[i].dst, is_glob);
|
|
if (st && st != CHECK_REF_FORMAT_ONELEVEL)
|
|
goto invalid;
|
|
}
|
|
}
|
|
}
|
|
return rs;
|
|
|
|
invalid:
|
|
if (verify) {
|
|
free(rs);
|
|
return NULL;
|
|
}
|
|
die("Invalid refspec '%s'", refspec[i]);
|
|
}
|
|
|
|
int valid_fetch_refspec(const char *fetch_refspec_str)
|
|
{
|
|
const char *fetch_refspec[] = { fetch_refspec_str };
|
|
struct refspec *refspec;
|
|
|
|
refspec = parse_refspec_internal(1, fetch_refspec, 1, 1);
|
|
if (refspec)
|
|
free(refspec);
|
|
return !!refspec;
|
|
}
|
|
|
|
struct refspec *parse_fetch_refspec(int nr_refspec, const char **refspec)
|
|
{
|
|
return parse_refspec_internal(nr_refspec, refspec, 1, 0);
|
|
}
|
|
|
|
struct refspec *parse_push_refspec(int nr_refspec, const char **refspec)
|
|
{
|
|
return parse_refspec_internal(nr_refspec, refspec, 0, 0);
|
|
}
|
|
|
|
static int valid_remote_nick(const char *name)
|
|
{
|
|
if (!name[0] || /* not empty */
|
|
(name[0] == '.' && /* not "." */
|
|
(!name[1] || /* not ".." */
|
|
(name[1] == '.' && !name[2]))))
|
|
return 0;
|
|
return !strchr(name, '/'); /* no slash */
|
|
}
|
|
|
|
struct remote *remote_get(const char *name)
|
|
{
|
|
struct remote *ret;
|
|
|
|
read_config();
|
|
if (!name)
|
|
name = default_remote_name;
|
|
ret = make_remote(name, 0);
|
|
if (valid_remote_nick(name)) {
|
|
if (!ret->url)
|
|
read_remotes_file(ret);
|
|
if (!ret->url)
|
|
read_branches_file(ret);
|
|
}
|
|
if (!ret->url)
|
|
add_url_alias(ret, name);
|
|
if (!ret->url)
|
|
return NULL;
|
|
ret->fetch = parse_fetch_refspec(ret->fetch_refspec_nr, ret->fetch_refspec);
|
|
ret->push = parse_push_refspec(ret->push_refspec_nr, ret->push_refspec);
|
|
return ret;
|
|
}
|
|
|
|
int for_each_remote(each_remote_fn fn, void *priv)
|
|
{
|
|
int i, result = 0;
|
|
read_config();
|
|
for (i = 0; i < remotes_nr && !result; i++) {
|
|
struct remote *r = remotes[i];
|
|
if (!r)
|
|
continue;
|
|
if (!r->fetch)
|
|
r->fetch = parse_fetch_refspec(r->fetch_refspec_nr,
|
|
r->fetch_refspec);
|
|
if (!r->push)
|
|
r->push = parse_push_refspec(r->push_refspec_nr,
|
|
r->push_refspec);
|
|
result = fn(r, priv);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
void ref_remove_duplicates(struct ref *ref_map)
|
|
{
|
|
struct ref **posn;
|
|
struct ref *next;
|
|
for (; ref_map; ref_map = ref_map->next) {
|
|
if (!ref_map->peer_ref)
|
|
continue;
|
|
posn = &ref_map->next;
|
|
while (*posn) {
|
|
if ((*posn)->peer_ref &&
|
|
!strcmp((*posn)->peer_ref->name,
|
|
ref_map->peer_ref->name)) {
|
|
if (strcmp((*posn)->name, ref_map->name))
|
|
die("%s tracks both %s and %s",
|
|
ref_map->peer_ref->name,
|
|
(*posn)->name, ref_map->name);
|
|
next = (*posn)->next;
|
|
free((*posn)->peer_ref);
|
|
free(*posn);
|
|
*posn = next;
|
|
} else {
|
|
posn = &(*posn)->next;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
int remote_has_url(struct remote *remote, const char *url)
|
|
{
|
|
int i;
|
|
for (i = 0; i < remote->url_nr; i++) {
|
|
if (!strcmp(remote->url[i], url))
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int remote_find_tracking(struct remote *remote, struct refspec *refspec)
|
|
{
|
|
int find_src = refspec->src == NULL;
|
|
char *needle, **result;
|
|
int i;
|
|
|
|
if (find_src) {
|
|
if (!refspec->dst)
|
|
return error("find_tracking: need either src or dst");
|
|
needle = refspec->dst;
|
|
result = &refspec->src;
|
|
} else {
|
|
needle = refspec->src;
|
|
result = &refspec->dst;
|
|
}
|
|
|
|
for (i = 0; i < remote->fetch_refspec_nr; i++) {
|
|
struct refspec *fetch = &remote->fetch[i];
|
|
const char *key = find_src ? fetch->dst : fetch->src;
|
|
const char *value = find_src ? fetch->src : fetch->dst;
|
|
if (!fetch->dst)
|
|
continue;
|
|
if (fetch->pattern) {
|
|
if (!prefixcmp(needle, key)) {
|
|
*result = xmalloc(strlen(value) +
|
|
strlen(needle) -
|
|
strlen(key) + 1);
|
|
strcpy(*result, value);
|
|
strcpy(*result + strlen(value),
|
|
needle + strlen(key));
|
|
refspec->force = fetch->force;
|
|
return 0;
|
|
}
|
|
} else if (!strcmp(needle, key)) {
|
|
*result = xstrdup(value);
|
|
refspec->force = fetch->force;
|
|
return 0;
|
|
}
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
struct ref *alloc_ref(unsigned namelen)
|
|
{
|
|
struct ref *ret = xmalloc(sizeof(struct ref) + namelen);
|
|
memset(ret, 0, sizeof(struct ref) + namelen);
|
|
return ret;
|
|
}
|
|
|
|
struct ref *alloc_ref_from_str(const char* str)
|
|
{
|
|
struct ref *ret = alloc_ref(strlen(str) + 1);
|
|
strcpy(ret->name, str);
|
|
return ret;
|
|
}
|
|
|
|
static struct ref *copy_ref(const struct ref *ref)
|
|
{
|
|
struct ref *ret = xmalloc(sizeof(struct ref) + strlen(ref->name) + 1);
|
|
memcpy(ret, ref, sizeof(struct ref) + strlen(ref->name) + 1);
|
|
ret->next = NULL;
|
|
return ret;
|
|
}
|
|
|
|
struct ref *copy_ref_list(const struct ref *ref)
|
|
{
|
|
struct ref *ret = NULL;
|
|
struct ref **tail = &ret;
|
|
while (ref) {
|
|
*tail = copy_ref(ref);
|
|
ref = ref->next;
|
|
tail = &((*tail)->next);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
void free_ref(struct ref *ref)
|
|
{
|
|
if (!ref)
|
|
return;
|
|
free(ref->remote_status);
|
|
free(ref->symref);
|
|
free(ref);
|
|
}
|
|
|
|
void free_refs(struct ref *ref)
|
|
{
|
|
struct ref *next;
|
|
while (ref) {
|
|
next = ref->next;
|
|
free(ref->peer_ref);
|
|
free_ref(ref);
|
|
ref = next;
|
|
}
|
|
}
|
|
|
|
static int count_refspec_match(const char *pattern,
|
|
struct ref *refs,
|
|
struct ref **matched_ref)
|
|
{
|
|
int patlen = strlen(pattern);
|
|
struct ref *matched_weak = NULL;
|
|
struct ref *matched = NULL;
|
|
int weak_match = 0;
|
|
int match = 0;
|
|
|
|
for (weak_match = match = 0; refs; refs = refs->next) {
|
|
char *name = refs->name;
|
|
int namelen = strlen(name);
|
|
|
|
if (!refname_match(pattern, name, ref_rev_parse_rules))
|
|
continue;
|
|
|
|
/* A match is "weak" if it is with refs outside
|
|
* heads or tags, and did not specify the pattern
|
|
* in full (e.g. "refs/remotes/origin/master") or at
|
|
* least from the toplevel (e.g. "remotes/origin/master");
|
|
* otherwise "git push $URL master" would result in
|
|
* ambiguity between remotes/origin/master and heads/master
|
|
* at the remote site.
|
|
*/
|
|
if (namelen != patlen &&
|
|
patlen != namelen - 5 &&
|
|
prefixcmp(name, "refs/heads/") &&
|
|
prefixcmp(name, "refs/tags/")) {
|
|
/* We want to catch the case where only weak
|
|
* matches are found and there are multiple
|
|
* matches, and where more than one strong
|
|
* matches are found, as ambiguous. One
|
|
* strong match with zero or more weak matches
|
|
* are acceptable as a unique match.
|
|
*/
|
|
matched_weak = refs;
|
|
weak_match++;
|
|
}
|
|
else {
|
|
matched = refs;
|
|
match++;
|
|
}
|
|
}
|
|
if (!matched) {
|
|
*matched_ref = matched_weak;
|
|
return weak_match;
|
|
}
|
|
else {
|
|
*matched_ref = matched;
|
|
return match;
|
|
}
|
|
}
|
|
|
|
static void tail_link_ref(struct ref *ref, struct ref ***tail)
|
|
{
|
|
**tail = ref;
|
|
while (ref->next)
|
|
ref = ref->next;
|
|
*tail = &ref->next;
|
|
}
|
|
|
|
static struct ref *try_explicit_object_name(const char *name)
|
|
{
|
|
unsigned char sha1[20];
|
|
struct ref *ref;
|
|
|
|
if (!*name) {
|
|
ref = alloc_ref(20);
|
|
strcpy(ref->name, "(delete)");
|
|
hashclr(ref->new_sha1);
|
|
return ref;
|
|
}
|
|
if (get_sha1(name, sha1))
|
|
return NULL;
|
|
ref = alloc_ref_from_str(name);
|
|
hashcpy(ref->new_sha1, sha1);
|
|
return ref;
|
|
}
|
|
|
|
static struct ref *make_linked_ref(const char *name, struct ref ***tail)
|
|
{
|
|
struct ref *ret = alloc_ref_from_str(name);
|
|
tail_link_ref(ret, tail);
|
|
return ret;
|
|
}
|
|
|
|
static char *guess_ref(const char *name, struct ref *peer)
|
|
{
|
|
struct strbuf buf = STRBUF_INIT;
|
|
unsigned char sha1[20];
|
|
|
|
const char *r = resolve_ref(peer->name, sha1, 1, NULL);
|
|
if (!r)
|
|
return NULL;
|
|
|
|
if (!prefixcmp(r, "refs/heads/"))
|
|
strbuf_addstr(&buf, "refs/heads/");
|
|
else if (!prefixcmp(r, "refs/tags/"))
|
|
strbuf_addstr(&buf, "refs/tags/");
|
|
else
|
|
return NULL;
|
|
|
|
strbuf_addstr(&buf, name);
|
|
return strbuf_detach(&buf, NULL);
|
|
}
|
|
|
|
static int match_explicit(struct ref *src, struct ref *dst,
|
|
struct ref ***dst_tail,
|
|
struct refspec *rs)
|
|
{
|
|
struct ref *matched_src, *matched_dst;
|
|
|
|
const char *dst_value = rs->dst;
|
|
char *dst_guess;
|
|
|
|
if (rs->pattern || rs->matching)
|
|
return 0;
|
|
|
|
matched_src = matched_dst = NULL;
|
|
switch (count_refspec_match(rs->src, src, &matched_src)) {
|
|
case 1:
|
|
break;
|
|
case 0:
|
|
/* The source could be in the get_sha1() format
|
|
* not a reference name. :refs/other is a
|
|
* way to delete 'other' ref at the remote end.
|
|
*/
|
|
matched_src = try_explicit_object_name(rs->src);
|
|
if (!matched_src)
|
|
return error("src refspec %s does not match any.", rs->src);
|
|
break;
|
|
default:
|
|
return error("src refspec %s matches more than one.", rs->src);
|
|
}
|
|
|
|
if (!dst_value) {
|
|
unsigned char sha1[20];
|
|
int flag;
|
|
|
|
dst_value = resolve_ref(matched_src->name, sha1, 1, &flag);
|
|
if (!dst_value ||
|
|
((flag & REF_ISSYMREF) &&
|
|
prefixcmp(dst_value, "refs/heads/")))
|
|
die("%s cannot be resolved to branch.",
|
|
matched_src->name);
|
|
}
|
|
|
|
switch (count_refspec_match(dst_value, dst, &matched_dst)) {
|
|
case 1:
|
|
break;
|
|
case 0:
|
|
if (!memcmp(dst_value, "refs/", 5))
|
|
matched_dst = make_linked_ref(dst_value, dst_tail);
|
|
else if((dst_guess = guess_ref(dst_value, matched_src)))
|
|
matched_dst = make_linked_ref(dst_guess, dst_tail);
|
|
else
|
|
error("unable to push to unqualified destination: %s\n"
|
|
"The destination refspec neither matches an "
|
|
"existing ref on the remote nor\n"
|
|
"begins with refs/, and we are unable to "
|
|
"guess a prefix based on the source ref.",
|
|
dst_value);
|
|
break;
|
|
default:
|
|
matched_dst = NULL;
|
|
error("dst refspec %s matches more than one.",
|
|
dst_value);
|
|
break;
|
|
}
|
|
if (!matched_dst)
|
|
return -1;
|
|
if (matched_dst->peer_ref)
|
|
return error("dst ref %s receives from more than one src.",
|
|
matched_dst->name);
|
|
else {
|
|
matched_dst->peer_ref = matched_src;
|
|
matched_dst->force = rs->force;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int match_explicit_refs(struct ref *src, struct ref *dst,
|
|
struct ref ***dst_tail, struct refspec *rs,
|
|
int rs_nr)
|
|
{
|
|
int i, errs;
|
|
for (i = errs = 0; i < rs_nr; i++)
|
|
errs += match_explicit(src, dst, dst_tail, &rs[i]);
|
|
return errs;
|
|
}
|
|
|
|
static const struct refspec *check_pattern_match(const struct refspec *rs,
|
|
int rs_nr,
|
|
const struct ref *src)
|
|
{
|
|
int i;
|
|
int matching_refs = -1;
|
|
for (i = 0; i < rs_nr; i++) {
|
|
if (rs[i].matching &&
|
|
(matching_refs == -1 || rs[i].force)) {
|
|
matching_refs = i;
|
|
continue;
|
|
}
|
|
|
|
if (rs[i].pattern && !prefixcmp(src->name, rs[i].src))
|
|
return rs + i;
|
|
}
|
|
if (matching_refs != -1)
|
|
return rs + matching_refs;
|
|
else
|
|
return NULL;
|
|
}
|
|
|
|
/*
|
|
* Note. This is used only by "push"; refspec matching rules for
|
|
* push and fetch are subtly different, so do not try to reuse it
|
|
* without thinking.
|
|
*/
|
|
int match_refs(struct ref *src, struct ref *dst, struct ref ***dst_tail,
|
|
int nr_refspec, const char **refspec, int flags)
|
|
{
|
|
struct refspec *rs;
|
|
int send_all = flags & MATCH_REFS_ALL;
|
|
int send_mirror = flags & MATCH_REFS_MIRROR;
|
|
static const char *default_refspec[] = { ":", 0 };
|
|
|
|
if (!nr_refspec) {
|
|
nr_refspec = 1;
|
|
refspec = default_refspec;
|
|
}
|
|
rs = parse_push_refspec(nr_refspec, (const char **) refspec);
|
|
if (match_explicit_refs(src, dst, dst_tail, rs, nr_refspec))
|
|
return -1;
|
|
|
|
/* pick the remainder */
|
|
for ( ; src; src = src->next) {
|
|
struct ref *dst_peer;
|
|
const struct refspec *pat = NULL;
|
|
char *dst_name;
|
|
if (src->peer_ref)
|
|
continue;
|
|
|
|
pat = check_pattern_match(rs, nr_refspec, src);
|
|
if (!pat)
|
|
continue;
|
|
|
|
if (pat->matching) {
|
|
/*
|
|
* "matching refs"; traditionally we pushed everything
|
|
* including refs outside refs/heads/ hierarchy, but
|
|
* that does not make much sense these days.
|
|
*/
|
|
if (!send_mirror && prefixcmp(src->name, "refs/heads/"))
|
|
continue;
|
|
dst_name = xstrdup(src->name);
|
|
|
|
} else {
|
|
const char *dst_side = pat->dst ? pat->dst : pat->src;
|
|
dst_name = xmalloc(strlen(dst_side) +
|
|
strlen(src->name) -
|
|
strlen(pat->src) + 2);
|
|
strcpy(dst_name, dst_side);
|
|
strcat(dst_name, src->name + strlen(pat->src));
|
|
}
|
|
dst_peer = find_ref_by_name(dst, dst_name);
|
|
if (dst_peer) {
|
|
if (dst_peer->peer_ref)
|
|
/* We're already sending something to this ref. */
|
|
goto free_name;
|
|
|
|
} else {
|
|
if (pat->matching && !(send_all || send_mirror))
|
|
/*
|
|
* Remote doesn't have it, and we have no
|
|
* explicit pattern, and we don't have
|
|
* --all nor --mirror.
|
|
*/
|
|
goto free_name;
|
|
|
|
/* Create a new one and link it */
|
|
dst_peer = make_linked_ref(dst_name, dst_tail);
|
|
hashcpy(dst_peer->new_sha1, src->new_sha1);
|
|
}
|
|
dst_peer->peer_ref = src;
|
|
dst_peer->force = pat->force;
|
|
free_name:
|
|
free(dst_name);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
struct branch *branch_get(const char *name)
|
|
{
|
|
struct branch *ret;
|
|
|
|
read_config();
|
|
if (!name || !*name || !strcmp(name, "HEAD"))
|
|
ret = current_branch;
|
|
else
|
|
ret = make_branch(name, 0);
|
|
if (ret && ret->remote_name) {
|
|
ret->remote = remote_get(ret->remote_name);
|
|
if (ret->merge_nr) {
|
|
int i;
|
|
ret->merge = xcalloc(sizeof(*ret->merge),
|
|
ret->merge_nr);
|
|
for (i = 0; i < ret->merge_nr; i++) {
|
|
ret->merge[i] = xcalloc(1, sizeof(**ret->merge));
|
|
ret->merge[i]->src = xstrdup(ret->merge_name[i]);
|
|
remote_find_tracking(ret->remote,
|
|
ret->merge[i]);
|
|
}
|
|
}
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
int branch_has_merge_config(struct branch *branch)
|
|
{
|
|
return branch && !!branch->merge;
|
|
}
|
|
|
|
int branch_merge_matches(struct branch *branch,
|
|
int i,
|
|
const char *refname)
|
|
{
|
|
if (!branch || i < 0 || i >= branch->merge_nr)
|
|
return 0;
|
|
return refname_match(branch->merge[i]->src, refname, ref_fetch_rules);
|
|
}
|
|
|
|
static struct ref *get_expanded_map(const struct ref *remote_refs,
|
|
const struct refspec *refspec)
|
|
{
|
|
const struct ref *ref;
|
|
struct ref *ret = NULL;
|
|
struct ref **tail = &ret;
|
|
|
|
int remote_prefix_len = strlen(refspec->src);
|
|
int local_prefix_len = strlen(refspec->dst);
|
|
|
|
for (ref = remote_refs; ref; ref = ref->next) {
|
|
if (strchr(ref->name, '^'))
|
|
continue; /* a dereference item */
|
|
if (!prefixcmp(ref->name, refspec->src)) {
|
|
const char *match;
|
|
struct ref *cpy = copy_ref(ref);
|
|
match = ref->name + remote_prefix_len;
|
|
|
|
cpy->peer_ref = alloc_ref(local_prefix_len +
|
|
strlen(match) + 1);
|
|
sprintf(cpy->peer_ref->name, "%s%s",
|
|
refspec->dst, match);
|
|
if (refspec->force)
|
|
cpy->peer_ref->force = 1;
|
|
*tail = cpy;
|
|
tail = &cpy->next;
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static const struct ref *find_ref_by_name_abbrev(const struct ref *refs, const char *name)
|
|
{
|
|
const struct ref *ref;
|
|
for (ref = refs; ref; ref = ref->next) {
|
|
if (refname_match(name, ref->name, ref_fetch_rules))
|
|
return ref;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
struct ref *get_remote_ref(const struct ref *remote_refs, const char *name)
|
|
{
|
|
const struct ref *ref = find_ref_by_name_abbrev(remote_refs, name);
|
|
|
|
if (!ref)
|
|
return NULL;
|
|
|
|
return copy_ref(ref);
|
|
}
|
|
|
|
static struct ref *get_local_ref(const char *name)
|
|
{
|
|
struct ref *ret;
|
|
if (!name)
|
|
return NULL;
|
|
|
|
if (!prefixcmp(name, "refs/")) {
|
|
return alloc_ref_from_str(name);
|
|
}
|
|
|
|
if (!prefixcmp(name, "heads/") ||
|
|
!prefixcmp(name, "tags/") ||
|
|
!prefixcmp(name, "remotes/")) {
|
|
ret = alloc_ref(strlen(name) + 6);
|
|
sprintf(ret->name, "refs/%s", name);
|
|
return ret;
|
|
}
|
|
|
|
ret = alloc_ref(strlen(name) + 12);
|
|
sprintf(ret->name, "refs/heads/%s", name);
|
|
return ret;
|
|
}
|
|
|
|
int get_fetch_map(const struct ref *remote_refs,
|
|
const struct refspec *refspec,
|
|
struct ref ***tail,
|
|
int missing_ok)
|
|
{
|
|
struct ref *ref_map, **rmp;
|
|
|
|
if (refspec->pattern) {
|
|
ref_map = get_expanded_map(remote_refs, refspec);
|
|
} else {
|
|
const char *name = refspec->src[0] ? refspec->src : "HEAD";
|
|
|
|
ref_map = get_remote_ref(remote_refs, name);
|
|
if (!missing_ok && !ref_map)
|
|
die("Couldn't find remote ref %s", name);
|
|
if (ref_map) {
|
|
ref_map->peer_ref = get_local_ref(refspec->dst);
|
|
if (ref_map->peer_ref && refspec->force)
|
|
ref_map->peer_ref->force = 1;
|
|
}
|
|
}
|
|
|
|
for (rmp = &ref_map; *rmp; ) {
|
|
if ((*rmp)->peer_ref) {
|
|
int st = check_ref_format((*rmp)->peer_ref->name + 5);
|
|
if (st && st != CHECK_REF_FORMAT_ONELEVEL) {
|
|
struct ref *ignore = *rmp;
|
|
error("* Ignoring funny ref '%s' locally",
|
|
(*rmp)->peer_ref->name);
|
|
*rmp = (*rmp)->next;
|
|
free(ignore->peer_ref);
|
|
free(ignore);
|
|
continue;
|
|
}
|
|
}
|
|
rmp = &((*rmp)->next);
|
|
}
|
|
|
|
if (ref_map)
|
|
tail_link_ref(ref_map, tail);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int resolve_remote_symref(struct ref *ref, struct ref *list)
|
|
{
|
|
if (!ref->symref)
|
|
return 0;
|
|
for (; list; list = list->next)
|
|
if (!strcmp(ref->symref, list->name)) {
|
|
hashcpy(ref->old_sha1, list->old_sha1);
|
|
return 0;
|
|
}
|
|
return 1;
|
|
}
|