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/*
* Copyright (c) 2023 Omar Polo <op@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include "got_compat.h"
#include <sys/queue.h>
#include <sys/types.h>
#include <ctype.h>
#include <limits.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include "got_error.h"
#include "got_cancel.h"
#include "got_reference.h"
#include "got_repository.h"
#include "got_repository_admin.h" /* XXX for pack_progress */
#include "got_object.h"
#include "got_opentemp.h"
#include "got_repository_dump.h"
#include "got_lib_delta.h"
#include "got_lib_hash.h"
#include "got_lib_object.h"
#include "got_lib_object_idset.h"
#include "got_lib_ratelimit.h"
#include "got_lib_pack_create.h"
#define GIT_BUNDLE_SIGNATURE_V2 "# v2 git bundle"
#define GIT_BUNDLE_SIGNATURE_V3 "# v3 git bundle"
struct idvec {
struct got_object_id **ids;
size_t len;
size_t size;
};
static const struct got_error *
idvec_push(struct idvec *v, struct got_object_id *id)
{
size_t newsize;
void *t;
if (v->len == v->size) {
newsize = v->size + 8;
t = reallocarray(v->ids, newsize, sizeof(*v->ids));
if (t == NULL)
return got_error_from_errno("reallocarray");
v->ids = t;
v->size = newsize;
}
v->ids[v->len++] = id;
return NULL;
}
static void
idvec_free(struct idvec *v)
{
size_t i;
for (i = 0; i < v->len; ++i)
free(v->ids[i]);
free(v->ids);
}
const struct got_error *
got_repo_dump(FILE *out, struct got_reflist_head *include_refs,
struct got_reflist_head *exclude_refs, struct got_repository *repo,
got_pack_progress_cb progress_cb, void *progress_arg,
got_cancel_cb cancel_cb, void *cancel_arg)
{
const struct got_error *err = NULL;
struct got_ratelimit rl;
struct got_object_id packhash;
FILE *delta_cache = NULL;
struct got_reflist_entry *e;
struct got_object_id *id = NULL;
struct got_commit_object *commit = NULL;
struct idvec ours, theirs;
char *nl, *s, *hex, *logmsg = NULL;
const char *refname, *signature;
enum got_hash_algorithm algo;
int r;
algo = got_repo_get_object_format(repo);
switch (algo) {
case GOT_HASH_SHA1:
signature = GIT_BUNDLE_SIGNATURE_V2;
break;
case GOT_HASH_SHA256:
signature = GIT_BUNDLE_SIGNATURE_V3;
break;
default:
return got_error(GOT_ERR_OBJECT_FORMAT);
}
got_ratelimit_init(&rl, 0, 500);
memset(&ours, 0, sizeof(ours));
memset(&theirs, 0, sizeof(theirs));
r = fprintf(out, "%s\n", signature);
if (r != strlen(GIT_BUNDLE_SIGNATURE_V2) + 1)
return got_ferror(out, GOT_ERR_IO);
if (algo == GOT_HASH_SHA256)
fprintf(out, "@object-format=sha256\n");
TAILQ_FOREACH(e, exclude_refs, entry) {
err = got_ref_resolve(&id, repo, e->ref);
if (err)
goto done;
idvec_push(&theirs, id);
if (err)
goto done;
err = got_object_open_as_commit(&commit, repo, id);
if (err)
goto done;
err = got_object_commit_get_logmsg(&logmsg, commit);
if (err)
goto done;
s = logmsg;
while (isspace((unsigned char)*s))
s++;
nl = strchr(s, '\n');
if (nl)
*nl = '\0';
err = got_object_id_str(&hex, id);
if (err)
goto done;
fprintf(out, "-%s %s\n", hex, s);
free(hex);
got_object_commit_close(commit);
commit = NULL;
free(logmsg);
logmsg = NULL;
}
TAILQ_FOREACH(e, include_refs, entry) {
err = got_ref_resolve(&id, repo, e->ref);
if (err)
goto done;
err = idvec_push(&ours, id);
if (err)
goto done;
refname = got_ref_get_name(e->ref);
err = got_object_id_str(&hex, id);
if (err)
goto done;
fprintf(out, "%s %s\n", hex, refname);
free(hex);
}
if (fputc('\n', out) == EOF || fflush(out) == EOF) {
err = got_ferror(out, GOT_ERR_IO);
goto done;
}
delta_cache = got_opentemp();
if (delta_cache == NULL) {
err = got_error_from_errno("got_opentemp");
goto done;
}
err = got_pack_create(&packhash, fileno(out), delta_cache,
theirs.ids, theirs.len, ours.ids, ours.len,
repo, 0, 0, 0, progress_cb, progress_arg, &rl,
cancel_cb, cancel_arg);
done:
idvec_free(&ours);
idvec_free(&theirs);
if (commit)
got_object_commit_close(commit);
if (delta_cache && fclose(delta_cache) == EOF && err == NULL)
err = got_error_from_errno("fclose");
return err;
}
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