#include "commit.h"
#include "tree.h"
#include "blob.h"
-
-#define PGP_SIGNATURE "-----BEGIN PGP SIGNATURE-----"
-#define PGP_MESSAGE "-----BEGIN PGP MESSAGE-----"
+#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->sha1);
+ o = parse_object(&((struct tag *)o)->tagged->oid);
else
o = NULL;
if (!o && warn) {
struct object *deref_tag_noverify(struct object *o)
{
while (o && o->type == OBJ_TAG) {
- o = parse_object(o->sha1);
+ o = parse_object(&o->oid);
if (o && o->type == OBJ_TAG && ((struct tag *)o)->tagged)
o = ((struct tag *)o)->tagged;
else
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, OBJ_TAG, alloc_tag_node());
- if (!obj->type)
- obj->type = OBJ_TAG;
- if (obj->type != OBJ_TAG) {
- error("Object %s is a %s, not a tag",
- sha1_to_hex(sha1), typename(obj->type));
- return NULL;
- }
- return (struct tag *) obj;
+ 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;
/* 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;
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 (prefixcmp(bufptr, "type "))
+ if (!starts_with(bufptr, "type "))
return -1;
bufptr += 5;
nl = memchr(bufptr, '\n', tail - bufptr);
if (!nl || sizeof(type) <= (nl - bufptr))
return -1;
- strncpy(type, bufptr, nl - bufptr);
+ memcpy(type, bufptr, nl - bufptr);
type[nl - bufptr] = '\0';
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;
}
- if (bufptr + 4 < tail && !prefixcmp(bufptr, "tag "))
+ if (bufptr + 4 < tail && starts_with(bufptr, "tag "))
; /* good */
else
return -1;
item->tag = xmemdupz(bufptr, nl - bufptr);
bufptr = nl + 1;
- if (bufptr + 7 < tail && !prefixcmp(bufptr, "tagger "))
+ if (bufptr + 7 < tail && starts_with(bufptr, "tagger "))
item->date = parse_tag_date(bufptr, tail);
else
item->date = 0;
if (item->object.parsed)
return 0;
- data = read_sha1_file(item->object.sha1, &type, &size);
+ data = read_sha1_file(item->object.oid.hash, &type, &size);
if (!data)
return error("Could not read %s",
- sha1_to_hex(item->object.sha1));
+ oid_to_hex(&item->object.oid));
if (type != OBJ_TAG) {
free(data);
return error("Object %s not a tag",
- sha1_to_hex(item->object.sha1));
+ oid_to_hex(&item->object.oid));
}
ret = parse_tag_buffer(item, data, size);
free(data);
return ret;
}
-
-/*
- * Look at a signed tag object, and return the offset where
- * the embedded detached signature begins, or the end of the
- * data when there is no such signature.
- */
-size_t parse_signature(const char *buf, unsigned long size)
-{
- char *eol;
- size_t len = 0;
- while (len < size && prefixcmp(buf + len, PGP_SIGNATURE) &&
- prefixcmp(buf + len, PGP_MESSAGE)) {
- eol = memchr(buf + len, '\n', size - len);
- len += eol ? eol - (buf + len) + 1 : size - len;
- }
- return len;
-}