]> git.ipfire.org Git - thirdparty/git.git/blobdiff - remote.c
Fix branches file configuration
[thirdparty/git.git] / remote.c
index 48812a713e56bbc74418d2d484ee345b4dc5aa32..d8a4671e68b4b59611ca4826dc88586f044210d5 100644 (file)
--- a/remote.c
+++ b/remote.c
@@ -171,7 +171,7 @@ static void read_branches_file(struct remote *remote)
 {
        const char *slash = strchr(remote->name, '/');
        char *frag;
-       char *branch;
+       struct strbuf branch;
        int n = slash ? slash - remote->name : 1000;
        FILE *f = fopen(git_path("branches/%.*s", n, remote->name), "r");
        char *s, *p;
@@ -197,17 +197,33 @@ static void read_branches_file(struct remote *remote)
        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';
-               branch = xmalloc(strlen(frag) + 12);
-               strcpy(branch, "refs/heads/");
-               strcat(branch, frag);
+               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 {
-               branch = "refs/heads/master";
+               strbuf_reset(&branch);
+               strbuf_addstr(&branch, "HEAD:");
        }
        add_url(remote, p);
-       add_fetch_refspec(remote, branch);
+       add_fetch_refspec(remote, strbuf_detach(&branch, 0));
        remote->fetch_tags = 1; /* always auto-follow */
 }
 
@@ -220,17 +236,20 @@ static int handle_config(const char *key, const char *value)
        if (!prefixcmp(key, "branch.")) {
                name = key + 7;
                subkey = strrchr(name, '.');
-               branch = make_branch(name, subkey - name);
                if (!subkey)
                        return 0;
-               if (!value)
-                       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"))
+               } else if (!strcmp(subkey, ".merge")) {
+                       if (!value)
+                               return config_error_nonbool(key);
                        add_merge(branch, xstrdup(value));
+               }
                return 0;
        }
        if (prefixcmp(key,  "remote."))
@@ -278,6 +297,8 @@ static int handle_config(const char *key, const char *value)
        } else if (!strcmp(subkey, ".tagopt")) {
                if (!strcmp(value, "--no-tags"))
                        remote->fetch_tags = -1;
+       } else if (!strcmp(subkey, ".proxy")) {
+               remote->http_proxy = xstrdup(value);
        }
        return 0;
 }
@@ -300,42 +321,137 @@ static void read_config(void)
        git_config(handle_config);
 }
 
-struct refspec *parse_ref_spec(int nr_refspec, const char **refspec)
+static struct refspec *parse_refspec_internal(int nr_refspec, const char **refspec, int fetch)
 {
        int i;
+       int st;
        struct refspec *rs = xcalloc(sizeof(*rs), nr_refspec);
+
        for (i = 0; i < nr_refspec; i++) {
-               const char *sp, *ep, *gp;
-               sp = refspec[i];
-               if (*sp == '+') {
+               size_t llen, rlen;
+               int is_glob;
+               const char *lhs, *rhs;
+
+               llen = rlen = is_glob = 0;
+
+               lhs = refspec[i];
+               if (*lhs == '+') {
                        rs[i].force = 1;
-                       sp++;
+                       lhs++;
                }
-               gp = strchr(sp, '*');
-               ep = strchr(sp, ':');
-               if (gp && ep && gp > ep)
-                       gp = NULL;
-               if (ep) {
-                       if (ep[1]) {
-                               const char *glob = strchr(ep + 1, '*');
-                               if (!glob)
-                                       gp = NULL;
-                               if (gp)
-                                       rs[i].dst = xstrndup(ep + 1,
-                                                            glob - ep - 1);
-                               else
-                                       rs[i].dst = xstrdup(ep + 1);
+
+               rhs = strrchr(lhs, ':');
+               if (rhs) {
+                       rhs++;
+                       rlen = strlen(rhs);
+                       is_glob = (2 <= rlen && !strcmp(rhs + rlen - 2, "/*"));
+                       if (is_glob)
+                               rlen -= 2;
+                       rs[i].dst = xstrndup(rhs, rlen);
+               }
+
+               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 -= 2;
+               } 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 = check_ref_format(rs[i].src);
+                               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 = check_ref_format(rs[i].dst);
+                               if (st && st != CHECK_REF_FORMAT_ONELEVEL)
+                                       goto invalid;
                        }
                } else {
-                       ep = sp + strlen(sp);
-               }
-               if (gp) {
-                       rs[i].pattern = 1;
-                       ep = gp;
+                       /*
+                        * 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 = check_ref_format(rs[i].src);
+                               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 = check_ref_format(rs[i].src);
+                               if (st && st != CHECK_REF_FORMAT_ONELEVEL)
+                                       goto invalid;
+                       } else if (!*rs[i].dst) {
+                               goto invalid;
+                       } else {
+                               st = check_ref_format(rs[i].dst);
+                               if (st && st != CHECK_REF_FORMAT_ONELEVEL)
+                                       goto invalid;
+                       }
                }
-               rs[i].src = xstrndup(sp, ep - sp);
        }
        return rs;
+
+ invalid:
+       die("Invalid refspec '%s'", refspec[i]);
+}
+
+struct refspec *parse_fetch_refspec(int nr_refspec, const char **refspec)
+{
+       return parse_refspec_internal(nr_refspec, refspec, 1);
+}
+
+struct refspec *parse_push_refspec(int nr_refspec, const char **refspec)
+{
+       return parse_refspec_internal(nr_refspec, refspec, 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)
@@ -346,7 +462,7 @@ struct remote *remote_get(const char *name)
        if (!name)
                name = default_remote_name;
        ret = make_remote(name, 0);
-       if (name[0] != '/') {
+       if (valid_remote_nick(name)) {
                if (!ret->url)
                        read_remotes_file(ret);
                if (!ret->url)
@@ -356,8 +472,8 @@ struct remote *remote_get(const char *name)
                add_url(ret, name);
        if (!ret->url)
                return NULL;
-       ret->fetch = parse_ref_spec(ret->fetch_refspec_nr, ret->fetch_refspec);
-       ret->push = parse_ref_spec(ret->push_refspec_nr, ret->push_refspec);
+       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;
 }
 
@@ -370,11 +486,11 @@ int for_each_remote(each_remote_fn fn, void *priv)
                if (!r)
                        continue;
                if (!r->fetch)
-                       r->fetch = parse_ref_spec(r->fetch_refspec_nr,
-                                       r->fetch_refspec);
+                       r->fetch = parse_fetch_refspec(r->fetch_refspec_nr,
+                                                      r->fetch_refspec);
                if (!r->push)
-                       r->push = parse_ref_spec(r->push_refspec_nr,
-                                       r->push_refspec);
+                       r->push = parse_push_refspec(r->push_refspec_nr,
+                                                    r->push_refspec);
                result = fn(r, priv);
        }
        return result;
@@ -440,7 +556,8 @@ int remote_find_tracking(struct remote *remote, struct refspec *refspec)
                if (!fetch->dst)
                        continue;
                if (fetch->pattern) {
-                       if (!prefixcmp(needle, key)) {
+                       if (!prefixcmp(needle, key) &&
+                           needle[strlen(key)] == '/') {
                                *result = xmalloc(strlen(value) +
                                                  strlen(needle) -
                                                  strlen(key) + 1);
@@ -466,7 +583,7 @@ struct ref *alloc_ref(unsigned namelen)
        return ret;
 }
 
-static struct ref *copy_ref(struct ref *ref)
+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);
@@ -474,6 +591,18 @@ static struct ref *copy_ref(struct ref *ref)
        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_refs(struct ref *ref)
 {
        struct ref *next;
@@ -662,21 +791,15 @@ static int match_explicit_refs(struct ref *src, struct ref *dst,
        return -errs;
 }
 
-static struct ref *find_ref_by_name(struct ref *list, const char *name)
-{
-       for ( ; list; list = list->next)
-               if (!strcmp(list->name, name))
-                       return list;
-       return NULL;
-}
-
 static const struct refspec *check_pattern_match(const struct refspec *rs,
                                                 int rs_nr,
                                                 const struct ref *src)
 {
        int i;
        for (i = 0; i < rs_nr; i++) {
-               if (rs[i].pattern && !prefixcmp(src->name, rs[i].src))
+               if (rs[i].pattern &&
+                   !prefixcmp(src->name, rs[i].src) &&
+                   src->name[strlen(rs[i].src)] == '/')
                        return rs + i;
        }
        return NULL;
@@ -688,10 +811,12 @@ static const struct refspec *check_pattern_match(const struct refspec *rs,
  * without thinking.
  */
 int match_refs(struct ref *src, struct ref *dst, struct ref ***dst_tail,
-              int nr_refspec, char **refspec, int all)
+              int nr_refspec, const char **refspec, int flags)
 {
        struct refspec *rs =
-               parse_ref_spec(nr_refspec, (const char **) refspec);
+               parse_push_refspec(nr_refspec, (const char **) refspec);
+       int send_all = flags & MATCH_REFS_ALL;
+       int send_mirror = flags & MATCH_REFS_MIRROR;
 
        if (match_explicit_refs(src, dst, dst_tail, rs, nr_refspec))
                return -1;
@@ -708,7 +833,7 @@ int match_refs(struct ref *src, struct ref *dst, struct ref ***dst_tail,
                        if (!pat)
                                continue;
                }
-               else if (prefixcmp(src->name, "refs/heads/"))
+               else if (!send_mirror && prefixcmp(src->name, "refs/heads/"))
                        /*
                         * "matching refs"; traditionally we pushed everything
                         * including refs outside refs/heads/ hierarchy, but
@@ -729,10 +854,13 @@ int match_refs(struct ref *src, struct ref *dst, struct ref ***dst_tail,
                if (dst_peer && dst_peer->peer_ref)
                        /* We're already sending something to this ref. */
                        goto free_name;
-               if (!dst_peer && !nr_refspec && !all)
-                       /* Remote doesn't have it, and we have no
+
+               if (!dst_peer && !nr_refspec && !(send_all || send_mirror))
+                       /*
+                        * Remote doesn't have it, and we have no
                         * explicit pattern, and we don't have
-                        * --all. */
+                        * --all nor --mirror.
+                        */
                        goto free_name;
                if (!dst_peer) {
                        /* Create a new one and link it */
@@ -788,10 +916,10 @@ int branch_merge_matches(struct branch *branch,
        return refname_match(branch->merge[i]->src, refname, ref_fetch_rules);
 }
 
-static struct ref *get_expanded_map(struct ref *remote_refs,
+static struct ref *get_expanded_map(const struct ref *remote_refs,
                                    const struct refspec *refspec)
 {
-       struct ref *ref;
+       const struct ref *ref;
        struct ref *ret = NULL;
        struct ref **tail = &ret;
 
@@ -802,7 +930,7 @@ static struct ref *get_expanded_map(struct ref *remote_refs,
                if (strchr(ref->name, '^'))
                        continue; /* a dereference item */
                if (!prefixcmp(ref->name, refspec->src)) {
-                       char *match;
+                       const char *match;
                        struct ref *cpy = copy_ref(ref);
                        match = ref->name + remote_prefix_len;
 
@@ -820,9 +948,9 @@ static struct ref *get_expanded_map(struct ref *remote_refs,
        return ret;
 }
 
-static struct ref *find_ref_by_name_abbrev(struct ref *refs, const char *name)
+static const struct ref *find_ref_by_name_abbrev(const struct ref *refs, const char *name)
 {
-       struct ref *ref;
+       const struct ref *ref;
        for (ref = refs; ref; ref = ref->next) {
                if (refname_match(name, ref->name, ref_fetch_rules))
                        return ref;
@@ -830,9 +958,9 @@ static struct ref *find_ref_by_name_abbrev(struct ref *refs, const char *name)
        return NULL;
 }
 
-struct ref *get_remote_ref(struct ref *remote_refs, const char *name)
+struct ref *get_remote_ref(const struct ref *remote_refs, const char *name)
 {
-       struct ref *ref = find_ref_by_name_abbrev(remote_refs, name);
+       const struct ref *ref = find_ref_by_name_abbrev(remote_refs, name);
 
        if (!ref)
                return NULL;
@@ -865,12 +993,12 @@ static struct ref *get_local_ref(const char *name)
        return ret;
 }
 
-int get_fetch_map(struct ref *remote_refs,
+int get_fetch_map(const struct ref *remote_refs,
                  const struct refspec *refspec,
                  struct ref ***tail,
                  int missing_ok)
 {
-       struct ref *ref_map, *rm;
+       struct ref *ref_map, **rmp;
 
        if (refspec->pattern) {
                ref_map = get_expanded_map(remote_refs, refspec);
@@ -887,10 +1015,20 @@ int get_fetch_map(struct ref *remote_refs,
                }
        }
 
-       for (rm = ref_map; rm; rm = rm->next) {
-               if (rm->peer_ref && check_ref_format(rm->peer_ref->name + 5))
-                       die("* refusing to create funny ref '%s' locally",
-                           rm->peer_ref->name);
+       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)