#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->sha1);
+ o = parse_object(((struct tag *)o)->tagged->oid.hash);
else
o = NULL;
if (!o && warn) {
return o;
}
+struct object *deref_tag_noverify(struct object *o)
+{
+ while (o && o->type == OBJ_TAG) {
+ o = parse_object(o->oid.hash);
+ if (o && o->type == OBJ_TAG && ((struct tag *)o)->tagged)
+ o = ((struct tag *)o)->tagged;
+ else
+ o = NULL;
+ }
+ return o;
+}
+
struct tag *lookup_tag(const unsigned char *sha1)
{
struct object *obj = lookup_object(sha1);
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(sha1, alloc_tag_node());
+ return object_as_type(obj, OBJ_TAG, 0);
}
-int parse_tag_buffer(struct tag *item, void *data, unsigned long size)
+static timestamp_t parse_tag_date(const char *buf, const char *tail)
+{
+ const char *dateptr;
+
+ while (buf < tail && *buf++ != '>')
+ /* nada */;
+ if (buf >= tail)
+ return 0;
+ dateptr = buf;
+ while (buf < tail && *buf++ != '\n')
+ /* nada */;
+ if (buf >= tail)
+ return 0;
+ /* 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)
{
- int typelen, taglen;
unsigned char sha1[20];
- const char *type_line, *tag_line, *sig_line;
char type[20];
- const char *start = data;
+ const char *bufptr = data;
+ const char *tail = bufptr + size;
+ const char *nl;
if (item->object.parsed)
return 0;
if (size < 64)
return -1;
- if (memcmp("object ", data, 7) || get_sha1_hex((char *) data + 7, sha1))
- return -1;
-
- type_line = (char *) data + 48;
- if (memcmp("\ntype ", type_line-1, 6))
+ if (memcmp("object ", bufptr, 7) || get_sha1_hex(bufptr + 7, sha1) || bufptr[47] != '\n')
return -1;
+ bufptr += 48; /* "object " + sha1 + "\n" */
- tag_line = memchr(type_line, '\n', size - (type_line - start));
- if (!tag_line || memcmp("tag ", ++tag_line, 4))
+ if (!starts_with(bufptr, "type "))
return -1;
-
- sig_line = memchr(tag_line, '\n', size - (tag_line - start));
- if (!sig_line)
+ bufptr += 5;
+ nl = memchr(bufptr, '\n', tail - bufptr);
+ if (!nl || sizeof(type) <= (nl - bufptr))
return -1;
- sig_line++;
-
- typelen = tag_line - type_line - strlen("type \n");
- if (typelen >= 20)
- return -1;
- memcpy(type, type_line + 5, typelen);
- type[typelen] = '\0';
- taglen = sig_line - tag_line - strlen("tag \n");
- item->tag = xmemdupz(tag_line + 4, taglen);
+ 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 = NULL;
}
+ if (bufptr + 4 < tail && starts_with(bufptr, "tag "))
+ ; /* good */
+ else
+ return -1;
+ bufptr += 4;
+ nl = memchr(bufptr, '\n', tail - bufptr);
+ if (!nl)
+ return -1;
+ item->tag = xmemdupz(bufptr, nl - bufptr);
+ bufptr = nl + 1;
+
+ if (bufptr + 7 < tail && starts_with(bufptr, "tagger "))
+ item->date = parse_tag_date(bufptr, tail);
+ else
+ item->date = 0;
+
return 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);