Imported Upstream version 2.14.4

[platform/upstream/git.git] / tag.c

diff --git a/tag.c b/tag.c
index d72f742..a3ffffd 100644 (file)
--- a/tag.c
+++ b/tag.c
@@ -3,14 +3,70 @@
 #include "commit.h"
 #include "tree.h"
 #include "blob.h"
+#include "gpg-interface.h"
 
 const char *tag_type = "tag";
 
+static int run_gpg_verify(const char *buf, unsigned long size, unsigned flags)
+{
+       struct signature_check sigc;
+       size_t payload_size;
+       int ret;
+
+       memset(&sigc, 0, sizeof(sigc));
+
+       payload_size = parse_signature(buf, size);
+
+       if (size == payload_size) {
+               if (flags & GPG_VERIFY_VERBOSE)
+                       write_in_full(1, buf, payload_size);
+               return error("no signature found");
+       }
+
+       ret = check_signature(buf, payload_size, buf + payload_size,
+                               size - payload_size, &sigc);
+
+       if (!(flags & GPG_VERIFY_OMIT_STATUS))
+               print_signature_buffer(&sigc, flags);
+
+       signature_check_clear(&sigc);
+       return ret;
+}
+
+int gpg_verify_tag(const unsigned char *sha1, const char *name_to_report,
+               unsigned flags)
+{
+       enum object_type type;
+       char *buf;
+       unsigned long size;
+       int ret;
+
+       type = sha1_object_info(sha1, NULL);
+       if (type != OBJ_TAG)
+               return error("%s: cannot verify a non-tag object of type %s.",
+                               name_to_report ?
+                               name_to_report :
+                               find_unique_abbrev(sha1, DEFAULT_ABBREV),
+                               typename(type));
+
+       buf = read_sha1_file(sha1, &type, &size);
+       if (!buf)
+               return error("%s: unable to read file.",
+                               name_to_report ?
+                               name_to_report :
+                               find_unique_abbrev(sha1, DEFAULT_ABBREV));
+
+       ret = run_gpg_verify(buf, size, flags);
+
+       free(buf);
+       return ret;
+}
+
 struct object *deref_tag(struct object *o, const char *warn, int warnlen)
 {
        while (o && o->type == OBJ_TAG)
                if (((struct tag *)o)->tagged)
-                       o = parse_object(((struct tag *)o)->tagged->oid.hash);
+                       o = parse_object(&((struct tag *)o)->tagged->oid);
                else
                        o = NULL;
        if (!o && warn) {
@@ -24,7 +80,7 @@ struct object *deref_tag(struct object *o, const char *warn, int warnlen)
 struct object *deref_tag_noverify(struct object *o)
 {
        while (o && o->type == OBJ_TAG) {
-               o = parse_object(o->oid.hash);
+               o = parse_object(&o->oid);
                if (o && o->type == OBJ_TAG && ((struct tag *)o)->tagged)
                        o = ((struct tag *)o)->tagged;
                else
@@ -33,15 +89,15 @@ struct object *deref_tag_noverify(struct object *o)
        return o;
 }
 
-struct tag *lookup_tag(const unsigned char *sha1)
+struct tag *lookup_tag(const struct object_id *oid)
 {
-       struct object *obj = lookup_object(sha1);
+       struct object *obj = lookup_object(oid->hash);
        if (!obj)
-               return create_object(sha1, alloc_tag_node());
+               return create_object(oid->hash, alloc_tag_node());
        return object_as_type(obj, OBJ_TAG, 0);
 }
 
-static unsigned long parse_tag_date(const char *buf, const char *tail)
+static timestamp_t parse_tag_date(const char *buf, const char *tail)
 {
        const char *dateptr;
 
@@ -54,13 +110,13 @@ static unsigned long parse_tag_date(const char *buf, const char *tail)
                /* nada */;
        if (buf >= tail)
                return 0;
-       /* dateptr < buf && buf[-1] == '\n', so strtoul will stop at buf-1 */
-       return strtoul(dateptr, NULL, 10);
+       /* dateptr < buf && buf[-1] == '\n', so parsing will stop at buf-1 */
+       return parse_timestamp(dateptr, NULL, 10);
 }
 
 int parse_tag_buffer(struct tag *item, const void *data, unsigned long size)
 {
-       unsigned char sha1[20];
+       struct object_id oid;
        char type[20];
        const char *bufptr = data;
        const char *tail = bufptr + size;
@@ -70,11 +126,10 @@ int parse_tag_buffer(struct tag *item, const void *data, unsigned long size)
                return 0;
        item->object.parsed = 1;
 
-       if (size < 64)
+       if (size < GIT_SHA1_HEXSZ + 24)
                return -1;
-       if (memcmp("object ", bufptr, 7) || get_sha1_hex(bufptr + 7, sha1) || bufptr[47] != '\n')
+       if (memcmp("object ", bufptr, 7) || parse_oid_hex(bufptr + 7, &oid, &bufptr) || *bufptr++ != '\n')
                return -1;
-       bufptr += 48; /* "object " + sha1 + "\n" */
 
        if (!starts_with(bufptr, "type "))
                return -1;
@@ -87,13 +142,13 @@ int parse_tag_buffer(struct tag *item, const void *data, unsigned long size)
        bufptr = nl + 1;
 
        if (!strcmp(type, blob_type)) {
-               item->tagged = &lookup_blob(sha1)->object;
+               item->tagged = (struct object *)lookup_blob(&oid);
        } else if (!strcmp(type, tree_type)) {
-               item->tagged = &lookup_tree(sha1)->object;
+               item->tagged = (struct object *)lookup_tree(&oid);
        } else if (!strcmp(type, commit_type)) {
-               item->tagged = &lookup_commit(sha1)->object;
+               item->tagged = (struct object *)lookup_commit(&oid);
        } else if (!strcmp(type, tag_type)) {
-               item->tagged = &lookup_tag(sha1)->object;
+               item->tagged = (struct object *)lookup_tag(&oid);
        } else {
                error("Unknown type %s", type);
                item->tagged = NULL;