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![Stefan Beller](/assets/img/avatar_default.png)
We have to convert all of the alloc functions at once, because alloc_report uses a funky macro for reporting. It is better for the sake of mechanical conversion to convert multiple functions at once rather than changing the structure of the reporting function. We record all memory allocation in alloc.c, and free them in clear_alloc_state, which is called for all repositories except the_repository. Signed-off-by: Stefan Beller <sbeller@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
208 lines
4.6 KiB
C
208 lines
4.6 KiB
C
#include "cache.h"
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#include "tag.h"
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#include "commit.h"
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#include "tree.h"
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#include "blob.h"
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#include "alloc.h"
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#include "gpg-interface.h"
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const char *tag_type = "tag";
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static int run_gpg_verify(const char *buf, unsigned long size, unsigned flags)
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{
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struct signature_check sigc;
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size_t payload_size;
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int ret;
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memset(&sigc, 0, sizeof(sigc));
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payload_size = parse_signature(buf, size);
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if (size == payload_size) {
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if (flags & GPG_VERIFY_VERBOSE)
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write_in_full(1, buf, payload_size);
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return error("no signature found");
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}
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ret = check_signature(buf, payload_size, buf + payload_size,
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size - payload_size, &sigc);
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if (!(flags & GPG_VERIFY_OMIT_STATUS))
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print_signature_buffer(&sigc, flags);
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signature_check_clear(&sigc);
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return ret;
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}
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int gpg_verify_tag(const struct object_id *oid, const char *name_to_report,
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unsigned flags)
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{
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enum object_type type;
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char *buf;
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unsigned long size;
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int ret;
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type = oid_object_info(the_repository, oid, NULL);
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if (type != OBJ_TAG)
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return error("%s: cannot verify a non-tag object of type %s.",
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name_to_report ?
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name_to_report :
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find_unique_abbrev(oid, DEFAULT_ABBREV),
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type_name(type));
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buf = read_object_file(oid, &type, &size);
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if (!buf)
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return error("%s: unable to read file.",
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name_to_report ?
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name_to_report :
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find_unique_abbrev(oid, DEFAULT_ABBREV));
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ret = run_gpg_verify(buf, size, flags);
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free(buf);
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return ret;
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}
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struct object *deref_tag(struct object *o, const char *warn, int warnlen)
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{
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while (o && o->type == OBJ_TAG)
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if (((struct tag *)o)->tagged)
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o = parse_object(&((struct tag *)o)->tagged->oid);
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else
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o = NULL;
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if (!o && warn) {
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if (!warnlen)
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warnlen = strlen(warn);
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error("missing object referenced by '%.*s'", warnlen, warn);
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}
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return o;
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}
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struct object *deref_tag_noverify(struct object *o)
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{
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while (o && o->type == OBJ_TAG) {
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o = parse_object(&o->oid);
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if (o && o->type == OBJ_TAG && ((struct tag *)o)->tagged)
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o = ((struct tag *)o)->tagged;
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else
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o = NULL;
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}
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return o;
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}
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struct tag *lookup_tag(const struct object_id *oid)
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{
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struct object *obj = lookup_object(oid->hash);
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if (!obj)
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return create_object(the_repository, oid->hash,
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alloc_tag_node(the_repository));
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return object_as_type(obj, OBJ_TAG, 0);
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}
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static timestamp_t parse_tag_date(const char *buf, const char *tail)
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{
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const char *dateptr;
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while (buf < tail && *buf++ != '>')
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/* nada */;
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if (buf >= tail)
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return 0;
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dateptr = buf;
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while (buf < tail && *buf++ != '\n')
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/* nada */;
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if (buf >= tail)
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return 0;
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/* dateptr < buf && buf[-1] == '\n', so parsing will stop at buf-1 */
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return parse_timestamp(dateptr, NULL, 10);
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}
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void release_tag_memory(struct tag *t)
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{
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free(t->tag);
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t->tagged = NULL;
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t->object.parsed = 0;
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t->date = 0;
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}
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int parse_tag_buffer(struct tag *item, const void *data, unsigned long size)
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{
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struct object_id oid;
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char type[20];
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const char *bufptr = data;
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const char *tail = bufptr + size;
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const char *nl;
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if (item->object.parsed)
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return 0;
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item->object.parsed = 1;
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if (size < GIT_SHA1_HEXSZ + 24)
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return -1;
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if (memcmp("object ", bufptr, 7) || parse_oid_hex(bufptr + 7, &oid, &bufptr) || *bufptr++ != '\n')
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return -1;
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if (!starts_with(bufptr, "type "))
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return -1;
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bufptr += 5;
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nl = memchr(bufptr, '\n', tail - bufptr);
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if (!nl || sizeof(type) <= (nl - bufptr))
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return -1;
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memcpy(type, bufptr, nl - bufptr);
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type[nl - bufptr] = '\0';
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bufptr = nl + 1;
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if (!strcmp(type, blob_type)) {
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item->tagged = (struct object *)lookup_blob(&oid);
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} else if (!strcmp(type, tree_type)) {
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item->tagged = (struct object *)lookup_tree(&oid);
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} else if (!strcmp(type, commit_type)) {
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item->tagged = (struct object *)lookup_commit(&oid);
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} else if (!strcmp(type, tag_type)) {
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item->tagged = (struct object *)lookup_tag(&oid);
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} else {
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error("Unknown type %s", type);
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item->tagged = NULL;
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}
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if (bufptr + 4 < tail && starts_with(bufptr, "tag "))
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; /* good */
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else
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return -1;
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bufptr += 4;
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nl = memchr(bufptr, '\n', tail - bufptr);
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if (!nl)
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return -1;
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item->tag = xmemdupz(bufptr, nl - bufptr);
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bufptr = nl + 1;
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if (bufptr + 7 < tail && starts_with(bufptr, "tagger "))
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item->date = parse_tag_date(bufptr, tail);
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else
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item->date = 0;
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return 0;
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}
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int parse_tag(struct tag *item)
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{
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enum object_type type;
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void *data;
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unsigned long size;
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int ret;
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if (item->object.parsed)
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return 0;
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data = read_object_file(&item->object.oid, &type, &size);
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if (!data)
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return error("Could not read %s",
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oid_to_hex(&item->object.oid));
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if (type != OBJ_TAG) {
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free(data);
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return error("Object %s not a tag",
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oid_to_hex(&item->object.oid));
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}
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ret = parse_tag_buffer(item, data, size);
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free(data);
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return ret;
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}
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