2 e6bcace5 2021-06-22 stsp * Copyright (c) 2020 Ori Bernstein
3 e6bcace5 2021-06-22 stsp * Copyright (c) 2021 Stefan Sperling <stsp@openbsd.org>
5 e6bcace5 2021-06-22 stsp * Permission to use, copy, modify, and distribute this software for any
6 e6bcace5 2021-06-22 stsp * purpose with or without fee is hereby granted, provided that the above
7 e6bcace5 2021-06-22 stsp * copyright notice and this permission notice appear in all copies.
9 e6bcace5 2021-06-22 stsp * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 e6bcace5 2021-06-22 stsp * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 e6bcace5 2021-06-22 stsp * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 e6bcace5 2021-06-22 stsp * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 e6bcace5 2021-06-22 stsp * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 e6bcace5 2021-06-22 stsp * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 e6bcace5 2021-06-22 stsp * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18 08736cf9 2021-06-23 stsp #include <sys/types.h>
19 e6bcace5 2021-06-22 stsp #include <sys/queue.h>
20 08736cf9 2021-06-23 stsp #include <sys/uio.h>
21 e6bcace5 2021-06-22 stsp #include <sys/stat.h>
23 08736cf9 2021-06-23 stsp #include <stdint.h>
24 05118f5a 2021-06-22 stsp #include <imsg.h>
25 e6bcace5 2021-06-22 stsp #include <stdio.h>
26 e6bcace5 2021-06-22 stsp #include <stdlib.h>
27 e6bcace5 2021-06-22 stsp #include <string.h>
28 e6bcace5 2021-06-22 stsp #include <sha1.h>
29 e6bcace5 2021-06-22 stsp #include <limits.h>
30 e6bcace5 2021-06-22 stsp #include <zlib.h>
32 e6bcace5 2021-06-22 stsp #include "got_error.h"
33 e6bcace5 2021-06-22 stsp #include "got_cancel.h"
34 e6bcace5 2021-06-22 stsp #include "got_object.h"
35 05118f5a 2021-06-22 stsp #include "got_reference.h"
36 05118f5a 2021-06-22 stsp #include "got_repository_admin.h"
38 e6bcace5 2021-06-22 stsp #include "got_lib_deltify.h"
39 e6bcace5 2021-06-22 stsp #include "got_lib_delta.h"
40 e6bcace5 2021-06-22 stsp #include "got_lib_object.h"
41 e6bcace5 2021-06-22 stsp #include "got_lib_object_idset.h"
42 05118f5a 2021-06-22 stsp #include "got_lib_object_cache.h"
43 e6bcace5 2021-06-22 stsp #include "got_lib_deflate.h"
44 e6bcace5 2021-06-22 stsp #include "got_lib_pack.h"
45 05118f5a 2021-06-22 stsp #include "got_lib_privsep.h"
46 05118f5a 2021-06-22 stsp #include "got_lib_repository.h"
49 e6bcace5 2021-06-22 stsp #define MAX(_a,_b) ((_a) > (_b) ? (_a) : (_b))
52 e6bcace5 2021-06-22 stsp struct got_pack_meta {
53 e6bcace5 2021-06-22 stsp struct got_object_id id;
55 e6bcace5 2021-06-22 stsp int obj_type;
56 e6bcace5 2021-06-22 stsp time_t mtime;
58 e6bcace5 2021-06-22 stsp /* The best delta we picked */
59 e6bcace5 2021-06-22 stsp struct got_pack_meta *head;
60 e6bcace5 2021-06-22 stsp struct got_pack_meta *prev;
61 e6bcace5 2021-06-22 stsp struct got_delta_instruction *deltas;
62 e6bcace5 2021-06-22 stsp int ndeltas;
65 e6bcace5 2021-06-22 stsp /* Only used for delta window */
66 e6bcace5 2021-06-22 stsp struct got_delta_table *dtab;
68 e6bcace5 2021-06-22 stsp /* Only used for writing offset deltas */
72 e6bcace5 2021-06-22 stsp struct got_pack_metavec {
73 e6bcace5 2021-06-22 stsp struct got_pack_meta **meta;
78 e6bcace5 2021-06-22 stsp static const struct got_error *
79 e6bcace5 2021-06-22 stsp alloc_meta(struct got_pack_meta **new, struct got_object_id *id,
80 e6bcace5 2021-06-22 stsp const char *path, int obj_type, time_t mtime)
82 e6bcace5 2021-06-22 stsp const struct got_error *err = NULL;
83 e6bcace5 2021-06-22 stsp struct got_pack_meta *m;
85 e6bcace5 2021-06-22 stsp *new = NULL;
87 e6bcace5 2021-06-22 stsp m = calloc(1, sizeof(*m));
88 e6bcace5 2021-06-22 stsp if (m == NULL)
89 e6bcace5 2021-06-22 stsp return got_error_from_errno("malloc");
91 e6bcace5 2021-06-22 stsp memcpy(&m->id, id, sizeof(m->id));
93 e6bcace5 2021-06-22 stsp m->path = strdup(path);
94 e6bcace5 2021-06-22 stsp if (m->path == NULL) {
95 e6bcace5 2021-06-22 stsp err = got_error_from_errno("strdup");
100 e6bcace5 2021-06-22 stsp m->obj_type = obj_type;
101 e6bcace5 2021-06-22 stsp m->mtime = mtime;
103 e6bcace5 2021-06-22 stsp return NULL;
106 e6bcace5 2021-06-22 stsp static void
107 e6bcace5 2021-06-22 stsp clear_meta(struct got_pack_meta *meta)
109 e6bcace5 2021-06-22 stsp if (meta == NULL)
111 e6bcace5 2021-06-22 stsp free(meta->deltas);
112 e6bcace5 2021-06-22 stsp meta->deltas = NULL;
113 e6bcace5 2021-06-22 stsp free(meta->path);
114 e6bcace5 2021-06-22 stsp meta->path = NULL;
117 e6bcace5 2021-06-22 stsp static void
118 e6bcace5 2021-06-22 stsp free_nmeta(struct got_pack_meta **meta, int nmeta)
122 e6bcace5 2021-06-22 stsp for (i = 0; i < nmeta; i++)
123 e6bcace5 2021-06-22 stsp clear_meta(meta[i]);
124 e6bcace5 2021-06-22 stsp free(meta);
128 e6bcace5 2021-06-22 stsp delta_order_cmp(const void *pa, const void *pb)
130 e6bcace5 2021-06-22 stsp struct got_pack_meta *a, *b;
133 e6bcace5 2021-06-22 stsp a = *(struct got_pack_meta **)pa;
134 e6bcace5 2021-06-22 stsp b = *(struct got_pack_meta **)pb;
136 e6bcace5 2021-06-22 stsp if (a->obj_type != b->obj_type)
137 e6bcace5 2021-06-22 stsp return a->obj_type - b->obj_type;
138 e6bcace5 2021-06-22 stsp cmp = strcmp(a->path, b->path);
139 e6bcace5 2021-06-22 stsp if (cmp != 0)
140 e6bcace5 2021-06-22 stsp return cmp;
141 e6bcace5 2021-06-22 stsp if (a->mtime != b->mtime)
142 e6bcace5 2021-06-22 stsp return a->mtime - b->mtime;
143 e6bcace5 2021-06-22 stsp return got_object_id_cmp(&a->id, &b->id);
147 e6bcace5 2021-06-22 stsp delta_size(struct got_delta_instruction *deltas, int ndeltas)
149 e6bcace5 2021-06-22 stsp int i, size = 32;
150 e6bcace5 2021-06-22 stsp for (i = 0; i < ndeltas; i++) {
151 e6bcace5 2021-06-22 stsp if (deltas[i].copy)
152 e6bcace5 2021-06-22 stsp size += GOT_DELTA_SIZE_SHIFT;
154 e6bcace5 2021-06-22 stsp size += deltas[i].len + 1;
156 e6bcace5 2021-06-22 stsp return size;
160 e6bcace5 2021-06-22 stsp static const struct got_error *
161 05118f5a 2021-06-22 stsp pick_deltas(struct got_pack_meta **meta, int nmeta, int nours,
162 05118f5a 2021-06-22 stsp struct got_repository *repo,
163 05118f5a 2021-06-22 stsp got_pack_progress_cb progress_cb, void *progress_arg,
164 e6bcace5 2021-06-22 stsp got_cancel_cb cancel_cb, void *cancel_arg)
166 e6bcace5 2021-06-22 stsp const struct got_error *err = NULL;
167 e6bcace5 2021-06-22 stsp struct got_pack_meta *m = NULL, *base = NULL;
168 e6bcace5 2021-06-22 stsp struct got_raw_object *raw = NULL, *base_raw = NULL;
169 e6bcace5 2021-06-22 stsp struct got_delta_instruction *deltas;
170 05118f5a 2021-06-22 stsp int i, j, size, ndeltas, best;
171 e6bcace5 2021-06-22 stsp const int max_base_candidates = 10;
173 e6bcace5 2021-06-22 stsp qsort(meta, nmeta, sizeof(struct got_pack_meta *), delta_order_cmp);
174 e6bcace5 2021-06-22 stsp for (i = 0; i < nmeta; i++) {
175 e6bcace5 2021-06-22 stsp if (cancel_cb) {
176 e6bcace5 2021-06-22 stsp err = (*cancel_cb)(cancel_arg);
180 05118f5a 2021-06-22 stsp if (progress_cb) {
181 05118f5a 2021-06-22 stsp err = progress_cb(progress_arg, 0L, nours, nmeta, i, 0);
185 e6bcace5 2021-06-22 stsp m = meta[i];
186 e6bcace5 2021-06-22 stsp m->deltas = NULL;
187 e6bcace5 2021-06-22 stsp m->ndeltas = 0;
189 e6bcace5 2021-06-22 stsp if (m->obj_type == GOT_OBJ_TYPE_COMMIT ||
190 e6bcace5 2021-06-22 stsp m->obj_type == GOT_OBJ_TYPE_TAG)
193 e6bcace5 2021-06-22 stsp err = got_object_raw_open(&raw, repo, &m->id, 8192);
197 e6bcace5 2021-06-22 stsp err = got_deltify_init(&m->dtab, raw->f, raw->hdrlen,
198 e6bcace5 2021-06-22 stsp raw->size + raw->hdrlen);
202 e6bcace5 2021-06-22 stsp if (i > max_base_candidates) {
203 e6bcace5 2021-06-22 stsp struct got_pack_meta *n = NULL;
204 e6bcace5 2021-06-22 stsp n = meta[i - (max_base_candidates + 1)];
205 e6bcace5 2021-06-22 stsp got_deltify_free(n->dtab);
206 e6bcace5 2021-06-22 stsp n->dtab = NULL;
209 e6bcace5 2021-06-22 stsp best = raw->size;
210 e6bcace5 2021-06-22 stsp for (j = MAX(0, i - max_base_candidates); j < i; j++) {
211 e6bcace5 2021-06-22 stsp if (cancel_cb) {
212 e6bcace5 2021-06-22 stsp err = (*cancel_cb)(cancel_arg);
216 e6bcace5 2021-06-22 stsp base = meta[j];
217 e6bcace5 2021-06-22 stsp /* long chains make unpacking slow, avoid such bases */
218 e6bcace5 2021-06-22 stsp if (base->nchain >= 128 ||
219 e6bcace5 2021-06-22 stsp base->obj_type != m->obj_type)
222 e6bcace5 2021-06-22 stsp err = got_object_raw_open(&base_raw, repo, &base->id,
226 e6bcace5 2021-06-22 stsp err = got_deltify(&deltas, &ndeltas,
227 e6bcace5 2021-06-22 stsp raw->f, raw->hdrlen, raw->size + raw->hdrlen,
228 e6bcace5 2021-06-22 stsp base->dtab, base_raw->f, base_raw->hdrlen,
229 e6bcace5 2021-06-22 stsp base_raw->size + base_raw->hdrlen);
230 e6bcace5 2021-06-22 stsp got_object_raw_close(base_raw);
231 e6bcace5 2021-06-22 stsp base_raw = NULL;
235 e6bcace5 2021-06-22 stsp size = delta_size(deltas, ndeltas);
236 e6bcace5 2021-06-22 stsp if (size + 32 < best){
238 e6bcace5 2021-06-22 stsp * if we already picked a best delta,
239 e6bcace5 2021-06-22 stsp * replace it.
241 e6bcace5 2021-06-22 stsp free(m->deltas);
242 e6bcace5 2021-06-22 stsp best = size;
243 e6bcace5 2021-06-22 stsp m->deltas = deltas;
244 e6bcace5 2021-06-22 stsp m->ndeltas = ndeltas;
245 e6bcace5 2021-06-22 stsp m->nchain = base->nchain + 1;
246 e6bcace5 2021-06-22 stsp m->prev = base;
247 e6bcace5 2021-06-22 stsp m->head = base->head;
248 e6bcace5 2021-06-22 stsp if (m->head == NULL)
249 e6bcace5 2021-06-22 stsp m->head = base;
251 e6bcace5 2021-06-22 stsp free(deltas);
252 e6bcace5 2021-06-22 stsp deltas = NULL;
253 e6bcace5 2021-06-22 stsp ndeltas = 0;
257 e6bcace5 2021-06-22 stsp got_object_raw_close(raw);
258 e6bcace5 2021-06-22 stsp raw = NULL;
261 e6bcace5 2021-06-22 stsp for (i = MAX(0, nmeta - max_base_candidates); i < nmeta; i++) {
262 e6bcace5 2021-06-22 stsp got_deltify_free(meta[i]->dtab);
263 e6bcace5 2021-06-22 stsp meta[i]->dtab = NULL;
266 e6bcace5 2021-06-22 stsp got_object_raw_close(raw);
267 e6bcace5 2021-06-22 stsp if (base_raw)
268 e6bcace5 2021-06-22 stsp got_object_raw_close(base_raw);
269 e6bcace5 2021-06-22 stsp return err;
272 e6bcace5 2021-06-22 stsp static const struct got_error *
273 05118f5a 2021-06-22 stsp search_packidx(int *found, struct got_object_id *id,
274 05118f5a 2021-06-22 stsp struct got_repository *repo)
276 05118f5a 2021-06-22 stsp const struct got_error *err = NULL;
277 05118f5a 2021-06-22 stsp struct got_packidx *packidx = NULL;
280 05118f5a 2021-06-22 stsp *found = 0;
282 05118f5a 2021-06-22 stsp err = got_repo_search_packidx(&packidx, &idx, repo, id);
283 05118f5a 2021-06-22 stsp if (err == NULL)
284 05118f5a 2021-06-22 stsp *found = 1; /* object is already packed */
285 05118f5a 2021-06-22 stsp else if (err->code == GOT_ERR_NO_OBJ)
286 05118f5a 2021-06-22 stsp err = NULL;
287 05118f5a 2021-06-22 stsp return err;
290 05118f5a 2021-06-22 stsp static const struct got_error *
291 e6bcace5 2021-06-22 stsp add_meta(struct got_pack_metavec *v, struct got_object_idset *idset,
292 e6bcace5 2021-06-22 stsp struct got_object_id *id, const char *path, int obj_type,
293 05118f5a 2021-06-22 stsp time_t mtime, int loose_obj_only, struct got_repository *repo)
295 e6bcace5 2021-06-22 stsp const struct got_error *err;
296 e6bcace5 2021-06-22 stsp struct got_pack_meta *m;
298 05118f5a 2021-06-22 stsp if (loose_obj_only) {
299 05118f5a 2021-06-22 stsp int is_packed;
300 05118f5a 2021-06-22 stsp err = search_packidx(&is_packed, id, repo);
302 05118f5a 2021-06-22 stsp return err;
303 05118f5a 2021-06-22 stsp if (is_packed)
304 05118f5a 2021-06-22 stsp return NULL;
307 e6bcace5 2021-06-22 stsp err = got_object_idset_add(idset, id, NULL);
309 e6bcace5 2021-06-22 stsp return err;
311 e6bcace5 2021-06-22 stsp if (v == NULL)
312 e6bcace5 2021-06-22 stsp return NULL;
314 e6bcace5 2021-06-22 stsp err = alloc_meta(&m, id, path, obj_type, mtime);
318 e6bcace5 2021-06-22 stsp if (v->nmeta == v->metasz){
319 e6bcace5 2021-06-22 stsp size_t newsize = 2 * v->metasz;
320 e6bcace5 2021-06-22 stsp struct got_pack_meta **new;
321 e6bcace5 2021-06-22 stsp new = reallocarray(v->meta, newsize, sizeof(*new));
322 e6bcace5 2021-06-22 stsp if (new == NULL) {
323 e6bcace5 2021-06-22 stsp err = got_error_from_errno("reallocarray");
326 e6bcace5 2021-06-22 stsp v->meta = new;
327 e6bcace5 2021-06-22 stsp v->metasz = newsize;
331 e6bcace5 2021-06-22 stsp clear_meta(m);
334 e6bcace5 2021-06-22 stsp v->meta[v->nmeta++] = m;
336 e6bcace5 2021-06-22 stsp return err;
339 e6bcace5 2021-06-22 stsp static const struct got_error *
340 e6bcace5 2021-06-22 stsp load_tree_entries(struct got_object_id_queue *ids, struct got_pack_metavec *v,
341 e6bcace5 2021-06-22 stsp struct got_object_idset *idset, struct got_object_id *tree_id,
342 e6bcace5 2021-06-22 stsp const char *dpath, time_t mtime, struct got_repository *repo,
343 05118f5a 2021-06-22 stsp int loose_obj_only, got_cancel_cb cancel_cb, void *cancel_arg)
345 e6bcace5 2021-06-22 stsp const struct got_error *err;
346 e6bcace5 2021-06-22 stsp struct got_tree_object *tree;
347 e6bcace5 2021-06-22 stsp char *p = NULL;
350 e6bcace5 2021-06-22 stsp err = got_object_open_as_tree(&tree, repo, tree_id);
352 e6bcace5 2021-06-22 stsp return err;
354 e6bcace5 2021-06-22 stsp for (i = 0; i < got_object_tree_get_nentries(tree); i++) {
355 e6bcace5 2021-06-22 stsp struct got_tree_entry *e = got_object_tree_get_entry(tree, i);
356 e6bcace5 2021-06-22 stsp struct got_object_id *id = got_tree_entry_get_id(e);
357 e6bcace5 2021-06-22 stsp mode_t mode = got_tree_entry_get_mode(e);
359 e6bcace5 2021-06-22 stsp if (cancel_cb) {
360 e6bcace5 2021-06-22 stsp err = (*cancel_cb)(cancel_arg);
365 e6bcace5 2021-06-22 stsp if (got_object_tree_entry_is_symlink(e) ||
366 e6bcace5 2021-06-22 stsp got_object_tree_entry_is_submodule(e) ||
367 e6bcace5 2021-06-22 stsp got_object_idset_contains(idset, id))
370 e6bcace5 2021-06-22 stsp if (asprintf(&p, "%s%s%s", dpath, dpath[0] != '\0' ? "/" : "",
371 e6bcace5 2021-06-22 stsp got_tree_entry_get_name(e)) == -1) {
372 e6bcace5 2021-06-22 stsp err = got_error_from_errno("asprintf");
376 e6bcace5 2021-06-22 stsp if (S_ISDIR(mode)) {
377 e6bcace5 2021-06-22 stsp struct got_object_qid *qid;
378 e6bcace5 2021-06-22 stsp err = got_object_qid_alloc(&qid, id);
381 e6bcace5 2021-06-22 stsp SIMPLEQ_INSERT_TAIL(ids, qid, entry);
382 e6bcace5 2021-06-22 stsp } else if (S_ISREG(mode)) {
383 e6bcace5 2021-06-22 stsp err = add_meta(v, idset, id, p, GOT_OBJ_TYPE_BLOB,
384 05118f5a 2021-06-22 stsp mtime, loose_obj_only, repo);
392 e6bcace5 2021-06-22 stsp got_object_tree_close(tree);
394 e6bcace5 2021-06-22 stsp return err;
397 e6bcace5 2021-06-22 stsp static const struct got_error *
398 e6bcace5 2021-06-22 stsp load_tree(struct got_pack_metavec *v, struct got_object_idset *idset,
399 e6bcace5 2021-06-22 stsp struct got_object_id *tree_id, const char *dpath, time_t mtime,
400 05118f5a 2021-06-22 stsp int loose_obj_only, struct got_repository *repo,
401 05118f5a 2021-06-22 stsp got_cancel_cb cancel_cb, void *cancel_arg)
403 e6bcace5 2021-06-22 stsp const struct got_error *err = NULL;
404 e6bcace5 2021-06-22 stsp struct got_object_id_queue tree_ids;
405 e6bcace5 2021-06-22 stsp struct got_object_qid *qid;
407 e6bcace5 2021-06-22 stsp if (got_object_idset_contains(idset, tree_id))
408 e6bcace5 2021-06-22 stsp return NULL;
410 e6bcace5 2021-06-22 stsp err = got_object_qid_alloc(&qid, tree_id);
412 e6bcace5 2021-06-22 stsp return err;
414 e6bcace5 2021-06-22 stsp SIMPLEQ_INIT(&tree_ids);
415 e6bcace5 2021-06-22 stsp SIMPLEQ_INSERT_TAIL(&tree_ids, qid, entry);
417 e6bcace5 2021-06-22 stsp while (!SIMPLEQ_EMPTY(&tree_ids)) {
418 e6bcace5 2021-06-22 stsp if (cancel_cb) {
419 e6bcace5 2021-06-22 stsp err = (*cancel_cb)(cancel_arg);
424 e6bcace5 2021-06-22 stsp qid = SIMPLEQ_FIRST(&tree_ids);
425 e6bcace5 2021-06-22 stsp SIMPLEQ_REMOVE_HEAD(&tree_ids, entry);
427 e6bcace5 2021-06-22 stsp if (got_object_idset_contains(idset, qid->id)) {
428 e6bcace5 2021-06-22 stsp got_object_qid_free(qid);
432 e6bcace5 2021-06-22 stsp err = add_meta(v, idset, qid->id, dpath, GOT_OBJ_TYPE_TREE,
433 05118f5a 2021-06-22 stsp mtime, loose_obj_only, repo);
435 e6bcace5 2021-06-22 stsp got_object_qid_free(qid);
439 e6bcace5 2021-06-22 stsp err = load_tree_entries(&tree_ids, v, idset, qid->id, dpath,
440 05118f5a 2021-06-22 stsp mtime, repo, loose_obj_only, cancel_cb, cancel_arg);
441 e6bcace5 2021-06-22 stsp got_object_qid_free(qid);
446 e6bcace5 2021-06-22 stsp got_object_id_queue_free(&tree_ids);
447 e6bcace5 2021-06-22 stsp return err;
450 e6bcace5 2021-06-22 stsp static const struct got_error *
451 e6bcace5 2021-06-22 stsp load_commit(struct got_pack_metavec *v, struct got_object_idset *idset,
452 05118f5a 2021-06-22 stsp struct got_object_id *id, struct got_repository *repo, int loose_obj_only,
453 e6bcace5 2021-06-22 stsp got_cancel_cb cancel_cb, void *cancel_arg)
455 e6bcace5 2021-06-22 stsp const struct got_error *err;
456 e6bcace5 2021-06-22 stsp struct got_commit_object *commit;
458 e6bcace5 2021-06-22 stsp if (got_object_idset_contains(idset, id))
459 e6bcace5 2021-06-22 stsp return NULL;
461 05118f5a 2021-06-22 stsp if (loose_obj_only) {
462 05118f5a 2021-06-22 stsp int is_packed;
463 05118f5a 2021-06-22 stsp err = search_packidx(&is_packed, id, repo);
465 05118f5a 2021-06-22 stsp return err;
466 05118f5a 2021-06-22 stsp if (is_packed)
467 05118f5a 2021-06-22 stsp return NULL;
470 e6bcace5 2021-06-22 stsp err = got_object_open_as_commit(&commit, repo, id);
472 e6bcace5 2021-06-22 stsp return err;
474 e6bcace5 2021-06-22 stsp err = add_meta(v, idset, id, "", GOT_OBJ_TYPE_COMMIT,
475 05118f5a 2021-06-22 stsp got_object_commit_get_committer_time(commit),
476 05118f5a 2021-06-22 stsp loose_obj_only, repo);
480 e6bcace5 2021-06-22 stsp err = load_tree(v, idset, got_object_commit_get_tree_id(commit),
481 05118f5a 2021-06-22 stsp "", got_object_commit_get_committer_time(commit),
482 05118f5a 2021-06-22 stsp loose_obj_only, repo, cancel_cb, cancel_arg);
484 e6bcace5 2021-06-22 stsp got_object_commit_close(commit);
485 e6bcace5 2021-06-22 stsp return err;
488 05118f5a 2021-06-22 stsp static const struct got_error *
489 05118f5a 2021-06-22 stsp load_tag(struct got_pack_metavec *v, struct got_object_idset *idset,
490 05118f5a 2021-06-22 stsp struct got_object_id *id, struct got_repository *repo, int loose_obj_only,
491 05118f5a 2021-06-22 stsp got_cancel_cb cancel_cb, void *cancel_arg)
493 05118f5a 2021-06-22 stsp const struct got_error *err;
494 05118f5a 2021-06-22 stsp struct got_tag_object *tag = NULL;
496 05118f5a 2021-06-22 stsp if (got_object_idset_contains(idset, id))
497 05118f5a 2021-06-22 stsp return NULL;
499 05118f5a 2021-06-22 stsp if (loose_obj_only) {
500 05118f5a 2021-06-22 stsp int is_packed;
501 05118f5a 2021-06-22 stsp err = search_packidx(&is_packed, id, repo);
503 05118f5a 2021-06-22 stsp return err;
504 05118f5a 2021-06-22 stsp if (is_packed)
505 05118f5a 2021-06-22 stsp return NULL;
508 05118f5a 2021-06-22 stsp err = got_object_open_as_tag(&tag, repo, id);
510 05118f5a 2021-06-22 stsp return err;
512 05118f5a 2021-06-22 stsp err = add_meta(v, idset, id, "", GOT_OBJ_TYPE_TAG,
513 05118f5a 2021-06-22 stsp got_object_tag_get_tagger_time(tag),
514 05118f5a 2021-06-22 stsp loose_obj_only, repo);
518 05118f5a 2021-06-22 stsp switch (got_object_tag_get_object_type(tag)) {
519 05118f5a 2021-06-22 stsp case GOT_OBJ_TYPE_COMMIT:
520 05118f5a 2021-06-22 stsp err = load_commit(NULL, idset,
521 05118f5a 2021-06-22 stsp got_object_tag_get_object_id(tag), repo,
522 05118f5a 2021-06-22 stsp loose_obj_only, cancel_cb, cancel_arg);
524 05118f5a 2021-06-22 stsp case GOT_OBJ_TYPE_TREE:
525 05118f5a 2021-06-22 stsp err = load_tree(v, idset, got_object_tag_get_object_id(tag),
526 05118f5a 2021-06-22 stsp "", got_object_tag_get_tagger_time(tag),
527 05118f5a 2021-06-22 stsp loose_obj_only, repo, cancel_cb, cancel_arg);
534 05118f5a 2021-06-22 stsp got_object_tag_close(tag);
535 05118f5a 2021-06-22 stsp return err;
538 e6bcace5 2021-06-22 stsp enum findtwixt_color {
539 e6bcace5 2021-06-22 stsp COLOR_KEEP = 0,
540 e6bcace5 2021-06-22 stsp COLOR_DROP,
541 e6bcace5 2021-06-22 stsp COLOR_BLANK,
543 e6bcace5 2021-06-22 stsp static const int findtwixt_colors[] = {
544 e6bcace5 2021-06-22 stsp COLOR_KEEP,
545 e6bcace5 2021-06-22 stsp COLOR_DROP,
546 e6bcace5 2021-06-22 stsp COLOR_BLANK
549 e6bcace5 2021-06-22 stsp static const struct got_error *
550 e6bcace5 2021-06-22 stsp queue_commit_id(struct got_object_id_queue *ids, struct got_object_id *id,
551 e6bcace5 2021-06-22 stsp int color, struct got_repository *repo)
553 e6bcace5 2021-06-22 stsp const struct got_error *err;
554 e6bcace5 2021-06-22 stsp struct got_object_qid *qid;
556 e6bcace5 2021-06-22 stsp err = got_object_qid_alloc(&qid, id);
558 e6bcace5 2021-06-22 stsp return err;
560 e6bcace5 2021-06-22 stsp SIMPLEQ_INSERT_TAIL(ids, qid, entry);
561 e6bcace5 2021-06-22 stsp qid->data = (void *)&findtwixt_colors[color];
562 e6bcace5 2021-06-22 stsp return NULL;
565 e6bcace5 2021-06-22 stsp static const struct got_error *
566 e6bcace5 2021-06-22 stsp drop_commit(struct got_object_idset *keep, struct got_object_idset *drop,
567 e6bcace5 2021-06-22 stsp struct got_object_id *id, struct got_repository *repo,
568 e6bcace5 2021-06-22 stsp got_cancel_cb cancel_cb, void *cancel_arg)
570 e6bcace5 2021-06-22 stsp const struct got_error *err = NULL;
571 e6bcace5 2021-06-22 stsp struct got_commit_object *commit;
572 e6bcace5 2021-06-22 stsp const struct got_object_id_queue *parents;
573 e6bcace5 2021-06-22 stsp struct got_object_id_queue ids;
574 e6bcace5 2021-06-22 stsp struct got_object_qid *qid;
576 e6bcace5 2021-06-22 stsp SIMPLEQ_INIT(&ids);
578 e6bcace5 2021-06-22 stsp err = got_object_qid_alloc(&qid, id);
580 e6bcace5 2021-06-22 stsp return err;
581 e6bcace5 2021-06-22 stsp SIMPLEQ_INSERT_HEAD(&ids, qid, entry);
583 e6bcace5 2021-06-22 stsp while (!SIMPLEQ_EMPTY(&ids)) {
584 e6bcace5 2021-06-22 stsp if (cancel_cb) {
585 e6bcace5 2021-06-22 stsp err = (*cancel_cb)(cancel_arg);
590 e6bcace5 2021-06-22 stsp qid = SIMPLEQ_FIRST(&ids);
591 e6bcace5 2021-06-22 stsp SIMPLEQ_REMOVE_HEAD(&ids, entry);
593 e6bcace5 2021-06-22 stsp if (got_object_idset_contains(drop, qid->id)) {
594 e6bcace5 2021-06-22 stsp got_object_qid_free(qid);
598 e6bcace5 2021-06-22 stsp err = got_object_idset_add(drop, qid->id, NULL);
600 e6bcace5 2021-06-22 stsp got_object_qid_free(qid);
604 e6bcace5 2021-06-22 stsp if (!got_object_idset_contains(keep, qid->id)) {
605 e6bcace5 2021-06-22 stsp got_object_qid_free(qid);
609 e6bcace5 2021-06-22 stsp err = got_object_open_as_commit(&commit, repo, qid->id);
610 e6bcace5 2021-06-22 stsp got_object_qid_free(qid);
614 e6bcace5 2021-06-22 stsp parents = got_object_commit_get_parent_ids(commit);
615 e6bcace5 2021-06-22 stsp if (parents) {
616 e6bcace5 2021-06-22 stsp err = got_object_id_queue_copy(parents, &ids);
618 e6bcace5 2021-06-22 stsp got_object_commit_close(commit);
622 e6bcace5 2021-06-22 stsp got_object_commit_close(commit);
625 e6bcace5 2021-06-22 stsp got_object_id_queue_free(&ids);
626 e6bcace5 2021-06-22 stsp return err;
629 e6bcace5 2021-06-22 stsp struct append_id_arg {
630 e6bcace5 2021-06-22 stsp struct got_object_id **array;
634 e6bcace5 2021-06-22 stsp static const struct got_error *
635 e6bcace5 2021-06-22 stsp append_id(struct got_object_id *id, void *data, void *arg)
637 e6bcace5 2021-06-22 stsp struct append_id_arg *a = arg;
639 e6bcace5 2021-06-22 stsp a->array[a->idx] = got_object_id_dup(id);
640 e6bcace5 2021-06-22 stsp if (a->array[a->idx] == NULL)
641 e6bcace5 2021-06-22 stsp return got_error_from_errno("got_object_id_dup");
644 e6bcace5 2021-06-22 stsp return NULL;
647 e6bcace5 2021-06-22 stsp static const struct got_error *
648 e6bcace5 2021-06-22 stsp findtwixt(struct got_object_id ***res, int *nres,
649 e6bcace5 2021-06-22 stsp struct got_object_id **head, int nhead,
650 e6bcace5 2021-06-22 stsp struct got_object_id **tail, int ntail,
651 e6bcace5 2021-06-22 stsp struct got_repository *repo,
652 e6bcace5 2021-06-22 stsp got_cancel_cb cancel_cb, void *cancel_arg)
654 e6bcace5 2021-06-22 stsp const struct got_error *err = NULL;
655 e6bcace5 2021-06-22 stsp struct got_object_id_queue ids;
656 e6bcace5 2021-06-22 stsp struct got_object_idset *keep, *drop;
657 e6bcace5 2021-06-22 stsp struct got_object_qid *qid;
658 05118f5a 2021-06-22 stsp int i, ncolor, nkeep, obj_type;
660 e6bcace5 2021-06-22 stsp SIMPLEQ_INIT(&ids);
661 e6bcace5 2021-06-22 stsp *res = NULL;
664 e6bcace5 2021-06-22 stsp keep = got_object_idset_alloc();
665 e6bcace5 2021-06-22 stsp if (keep == NULL)
666 e6bcace5 2021-06-22 stsp return got_error_from_errno("got_object_idset_alloc");
668 e6bcace5 2021-06-22 stsp drop = got_object_idset_alloc();
669 e6bcace5 2021-06-22 stsp if (drop == NULL) {
670 e6bcace5 2021-06-22 stsp err = got_error_from_errno("got_object_idset_alloc");
674 05118f5a 2021-06-22 stsp for (i = 0; i < nhead; i++) {
675 05118f5a 2021-06-22 stsp struct got_object_id *id = head[i];
676 05118f5a 2021-06-22 stsp if (id == NULL)
678 05118f5a 2021-06-22 stsp err = got_object_get_type(&obj_type, repo, id);
680 05118f5a 2021-06-22 stsp return err;
681 05118f5a 2021-06-22 stsp if (obj_type != GOT_OBJ_TYPE_COMMIT)
683 05118f5a 2021-06-22 stsp err = queue_commit_id(&ids, id, COLOR_KEEP, repo);
687 05118f5a 2021-06-22 stsp for (i = 0; i < ntail; i++) {
688 05118f5a 2021-06-22 stsp struct got_object_id *id = tail[i];
689 05118f5a 2021-06-22 stsp if (id == NULL)
691 05118f5a 2021-06-22 stsp err = got_object_get_type(&obj_type, repo, id);
693 05118f5a 2021-06-22 stsp return err;
694 05118f5a 2021-06-22 stsp if (obj_type != GOT_OBJ_TYPE_COMMIT)
696 05118f5a 2021-06-22 stsp err = queue_commit_id(&ids, id, COLOR_DROP, repo);
701 e6bcace5 2021-06-22 stsp while (!SIMPLEQ_EMPTY(&ids)) {
702 e6bcace5 2021-06-22 stsp int qcolor;
703 e6bcace5 2021-06-22 stsp qid = SIMPLEQ_FIRST(&ids);
704 e6bcace5 2021-06-22 stsp qcolor = *((int *)qid->data);
706 e6bcace5 2021-06-22 stsp if (got_object_idset_contains(drop, qid->id))
707 e6bcace5 2021-06-22 stsp ncolor = COLOR_DROP;
708 e6bcace5 2021-06-22 stsp else if (got_object_idset_contains(keep, qid->id))
709 e6bcace5 2021-06-22 stsp ncolor = COLOR_KEEP;
711 e6bcace5 2021-06-22 stsp ncolor = COLOR_BLANK;
713 e6bcace5 2021-06-22 stsp if (ncolor == COLOR_DROP || (ncolor == COLOR_KEEP &&
714 e6bcace5 2021-06-22 stsp qcolor == COLOR_KEEP)) {
715 e6bcace5 2021-06-22 stsp SIMPLEQ_REMOVE_HEAD(&ids, entry);
716 e6bcace5 2021-06-22 stsp got_object_qid_free(qid);
720 e6bcace5 2021-06-22 stsp if (ncolor == COLOR_KEEP && qcolor == COLOR_DROP) {
721 e6bcace5 2021-06-22 stsp err = drop_commit(keep, drop, qid->id, repo,
722 e6bcace5 2021-06-22 stsp cancel_cb, cancel_arg);
725 e6bcace5 2021-06-22 stsp } else if (ncolor == COLOR_BLANK) {
726 e6bcace5 2021-06-22 stsp struct got_commit_object *commit;
727 e6bcace5 2021-06-22 stsp struct got_object_id *id;
728 e6bcace5 2021-06-22 stsp const struct got_object_id_queue *parents;
729 e6bcace5 2021-06-22 stsp struct got_object_qid *pid;
731 e6bcace5 2021-06-22 stsp id = got_object_id_dup(qid->id);
732 e6bcace5 2021-06-22 stsp if (id == NULL) {
733 e6bcace5 2021-06-22 stsp err = got_error_from_errno("got_object_id_dup");
736 e6bcace5 2021-06-22 stsp if (qcolor == COLOR_KEEP)
737 e6bcace5 2021-06-22 stsp err = got_object_idset_add(keep, id, NULL);
739 e6bcace5 2021-06-22 stsp err = got_object_idset_add(drop, id, NULL);
745 e6bcace5 2021-06-22 stsp err = got_object_open_as_commit(&commit, repo, id);
750 e6bcace5 2021-06-22 stsp parents = got_object_commit_get_parent_ids(commit);
751 e6bcace5 2021-06-22 stsp if (parents) {
752 e6bcace5 2021-06-22 stsp SIMPLEQ_FOREACH(pid, parents, entry) {
753 e6bcace5 2021-06-22 stsp err = queue_commit_id(&ids, pid->id,
754 e6bcace5 2021-06-22 stsp qcolor, repo);
761 e6bcace5 2021-06-22 stsp got_object_commit_close(commit);
762 e6bcace5 2021-06-22 stsp commit = NULL;
764 e6bcace5 2021-06-22 stsp /* should not happen */
765 e6bcace5 2021-06-22 stsp err = got_error_fmt(GOT_ERR_NOT_IMPL,
766 e6bcace5 2021-06-22 stsp "%s ncolor=%d qcolor=%d", __func__, ncolor, qcolor);
770 e6bcace5 2021-06-22 stsp SIMPLEQ_REMOVE_HEAD(&ids, entry);
771 e6bcace5 2021-06-22 stsp got_object_qid_free(qid);
774 e6bcace5 2021-06-22 stsp nkeep = got_object_idset_num_elements(keep);
775 e6bcace5 2021-06-22 stsp if (nkeep > 0) {
776 e6bcace5 2021-06-22 stsp struct append_id_arg arg;
777 e6bcace5 2021-06-22 stsp arg.array = calloc(nkeep, sizeof(struct got_object_id *));
778 e6bcace5 2021-06-22 stsp if (arg.array == NULL) {
779 e6bcace5 2021-06-22 stsp err = got_error_from_errno("calloc");
782 e6bcace5 2021-06-22 stsp arg.idx = 0;
783 e6bcace5 2021-06-22 stsp err = got_object_idset_for_each(keep, append_id, &arg);
785 e6bcace5 2021-06-22 stsp free(arg.array);
788 e6bcace5 2021-06-22 stsp *res = arg.array;
789 e6bcace5 2021-06-22 stsp *nres = nkeep;
792 e6bcace5 2021-06-22 stsp got_object_idset_free(keep);
793 e6bcace5 2021-06-22 stsp got_object_idset_free(drop);
794 e6bcace5 2021-06-22 stsp got_object_id_queue_free(&ids);
795 e6bcace5 2021-06-22 stsp return err;
798 e6bcace5 2021-06-22 stsp static const struct got_error *
799 e6bcace5 2021-06-22 stsp read_meta(struct got_pack_meta ***meta, int *nmeta,
800 e6bcace5 2021-06-22 stsp struct got_object_id **theirs, int ntheirs,
801 e6bcace5 2021-06-22 stsp struct got_object_id **ours, int nours, struct got_repository *repo,
802 05118f5a 2021-06-22 stsp int loose_obj_only, got_pack_progress_cb progress_cb, void *progress_arg,
803 e6bcace5 2021-06-22 stsp got_cancel_cb cancel_cb, void *cancel_arg)
805 e6bcace5 2021-06-22 stsp const struct got_error *err = NULL;
806 e6bcace5 2021-06-22 stsp struct got_object_id **ids = NULL;
807 e6bcace5 2021-06-22 stsp struct got_object_idset *idset;
808 05118f5a 2021-06-22 stsp int i, nobj = 0, obj_type;
809 e6bcace5 2021-06-22 stsp struct got_pack_metavec v;
811 e6bcace5 2021-06-22 stsp *meta = NULL;
812 e6bcace5 2021-06-22 stsp *nmeta = 0;
814 e6bcace5 2021-06-22 stsp idset = got_object_idset_alloc();
815 e6bcace5 2021-06-22 stsp if (idset == NULL)
816 e6bcace5 2021-06-22 stsp return got_error_from_errno("got_object_idset_alloc");
818 e6bcace5 2021-06-22 stsp v.nmeta = 0;
819 e6bcace5 2021-06-22 stsp v.metasz = 64;
820 e6bcace5 2021-06-22 stsp v.meta = calloc(v.metasz, sizeof(struct got_pack_meta *));
821 e6bcace5 2021-06-22 stsp if (v.meta == NULL) {
822 e6bcace5 2021-06-22 stsp err = got_error_from_errno("reallocarray");
826 e6bcace5 2021-06-22 stsp err = findtwixt(&ids, &nobj, ours, nours, theirs, ntheirs, repo,
827 e6bcace5 2021-06-22 stsp cancel_cb, cancel_arg);
828 e6bcace5 2021-06-22 stsp if (err || nobj == 0)
831 e6bcace5 2021-06-22 stsp for (i = 0; i < ntheirs; i++) {
832 05118f5a 2021-06-22 stsp struct got_object_id *id = theirs[i];
833 05118f5a 2021-06-22 stsp if (id == NULL)
835 05118f5a 2021-06-22 stsp err = got_object_get_type(&obj_type, repo, id);
837 05118f5a 2021-06-22 stsp return err;
838 05118f5a 2021-06-22 stsp if (obj_type != GOT_OBJ_TYPE_COMMIT)
840 05118f5a 2021-06-22 stsp err = load_commit(NULL, idset, id, repo,
841 05118f5a 2021-06-22 stsp loose_obj_only, cancel_cb, cancel_arg);
844 05118f5a 2021-06-22 stsp if (progress_cb) {
845 05118f5a 2021-06-22 stsp err = progress_cb(progress_arg, 0L, nours,
846 05118f5a 2021-06-22 stsp v.nmeta, 0, 0);
852 e6bcace5 2021-06-22 stsp for (i = 0; i < nobj; i++) {
853 e6bcace5 2021-06-22 stsp err = load_commit(&v, idset, ids[i], repo,
854 05118f5a 2021-06-22 stsp loose_obj_only, cancel_cb, cancel_arg);
857 05118f5a 2021-06-22 stsp if (progress_cb) {
858 05118f5a 2021-06-22 stsp err = progress_cb(progress_arg, 0L, nours,
859 05118f5a 2021-06-22 stsp v.nmeta, 0, 0);
865 05118f5a 2021-06-22 stsp for (i = 0; i < ntheirs; i++) {
866 05118f5a 2021-06-22 stsp struct got_object_id *id = ours[i];
867 05118f5a 2021-06-22 stsp if (id == NULL)
869 05118f5a 2021-06-22 stsp err = got_object_get_type(&obj_type, repo, id);
871 05118f5a 2021-06-22 stsp return err;
872 05118f5a 2021-06-22 stsp if (obj_type != GOT_OBJ_TYPE_TAG)
874 05118f5a 2021-06-22 stsp err = load_tag(NULL, idset, id, repo,
875 05118f5a 2021-06-22 stsp loose_obj_only, cancel_cb, cancel_arg);
878 05118f5a 2021-06-22 stsp if (progress_cb) {
879 05118f5a 2021-06-22 stsp err = progress_cb(progress_arg, 0L, nours,
880 05118f5a 2021-06-22 stsp v.nmeta, 0, 0);
886 05118f5a 2021-06-22 stsp for (i = 0; i < nours; i++) {
887 05118f5a 2021-06-22 stsp struct got_object_id *id = ours[i];
888 05118f5a 2021-06-22 stsp if (id == NULL)
890 05118f5a 2021-06-22 stsp err = got_object_get_type(&obj_type, repo, id);
892 05118f5a 2021-06-22 stsp return err;
893 05118f5a 2021-06-22 stsp if (obj_type != GOT_OBJ_TYPE_TAG)
895 05118f5a 2021-06-22 stsp err = load_tag(&v, idset, id, repo,
896 05118f5a 2021-06-22 stsp loose_obj_only, cancel_cb, cancel_arg);
899 05118f5a 2021-06-22 stsp if (progress_cb) {
900 05118f5a 2021-06-22 stsp err = progress_cb(progress_arg, 0L, nours,
901 05118f5a 2021-06-22 stsp v.nmeta, 0, 0);
908 e6bcace5 2021-06-22 stsp for (i = 0; i < nobj; i++) {
909 e6bcace5 2021-06-22 stsp free(ids[i]);
912 e6bcace5 2021-06-22 stsp got_object_idset_free(idset);
913 e6bcace5 2021-06-22 stsp if (err == NULL) {
914 e6bcace5 2021-06-22 stsp *meta = v.meta;
915 e6bcace5 2021-06-22 stsp *nmeta = v.nmeta;
917 e6bcace5 2021-06-22 stsp free(v.meta);
919 e6bcace5 2021-06-22 stsp return err;
922 e6bcace5 2021-06-22 stsp const struct got_error *
923 e6bcace5 2021-06-22 stsp hwrite(FILE *f, void *buf, int len, SHA1_CTX *ctx)
927 e6bcace5 2021-06-22 stsp SHA1Update(ctx, buf, len);
928 e6bcace5 2021-06-22 stsp n = fwrite(buf, 1, len, f);
929 e6bcace5 2021-06-22 stsp if (n != len)
930 e6bcace5 2021-06-22 stsp return got_ferror(f, GOT_ERR_IO);
931 e6bcace5 2021-06-22 stsp return NULL;
934 e6bcace5 2021-06-22 stsp static void
935 e6bcace5 2021-06-22 stsp putbe32(char *b, uint32_t n)
937 e6bcace5 2021-06-22 stsp b[0] = n >> 24;
938 e6bcace5 2021-06-22 stsp b[1] = n >> 16;
939 e6bcace5 2021-06-22 stsp b[2] = n >> 8;
940 e6bcace5 2021-06-22 stsp b[3] = n >> 0;
944 e6bcace5 2021-06-22 stsp write_order_cmp(const void *pa, const void *pb)
946 e6bcace5 2021-06-22 stsp struct got_pack_meta *a, *b, *ahd, *bhd;
948 e6bcace5 2021-06-22 stsp a = *(struct got_pack_meta **)pa;
949 e6bcace5 2021-06-22 stsp b = *(struct got_pack_meta **)pb;
950 e6bcace5 2021-06-22 stsp ahd = (a->head == NULL) ? a : a->head;
951 e6bcace5 2021-06-22 stsp bhd = (b->head == NULL) ? b : b->head;
952 e6bcace5 2021-06-22 stsp if (ahd->mtime != bhd->mtime)
953 e6bcace5 2021-06-22 stsp return bhd->mtime - ahd->mtime;
954 e6bcace5 2021-06-22 stsp if (ahd != bhd)
955 e6bcace5 2021-06-22 stsp return (uintptr_t)bhd - (uintptr_t)ahd;
956 e6bcace5 2021-06-22 stsp if (a->nchain != b->nchain)
957 e6bcace5 2021-06-22 stsp return a->nchain - b->nchain;
958 e6bcace5 2021-06-22 stsp return a->mtime - b->mtime;
961 e6bcace5 2021-06-22 stsp static const struct got_error *
962 e6bcace5 2021-06-22 stsp packhdr(int *hdrlen, char *hdr, size_t bufsize, int obj_type, size_t len)
966 e6bcace5 2021-06-22 stsp *hdrlen = 0;
968 e6bcace5 2021-06-22 stsp hdr[0] = obj_type << 4;
969 e6bcace5 2021-06-22 stsp hdr[0] |= len & 0xf;
971 e6bcace5 2021-06-22 stsp for (i = 1; len != 0; i++){
972 e6bcace5 2021-06-22 stsp if (i >= bufsize)
973 e6bcace5 2021-06-22 stsp return got_error(GOT_ERR_NO_SPACE);
974 e6bcace5 2021-06-22 stsp hdr[i - 1] |= GOT_DELTA_SIZE_MORE;
975 e6bcace5 2021-06-22 stsp hdr[i] = len & GOT_DELTA_SIZE_VAL_MASK;
976 e6bcace5 2021-06-22 stsp len >>= GOT_DELTA_SIZE_SHIFT;
979 e6bcace5 2021-06-22 stsp *hdrlen = i;
980 e6bcace5 2021-06-22 stsp return NULL;
983 e6bcace5 2021-06-22 stsp static const struct got_error *
984 e6bcace5 2021-06-22 stsp append(char **p, int *len, int *sz, void *seg, int nseg)
988 e6bcace5 2021-06-22 stsp if (*len + nseg >= *sz) {
989 e6bcace5 2021-06-22 stsp while (*len + nseg >= *sz)
990 e6bcace5 2021-06-22 stsp *sz += *sz / 2;
991 e6bcace5 2021-06-22 stsp n = realloc(*p, *sz);
992 e6bcace5 2021-06-22 stsp if (n == NULL)
993 e6bcace5 2021-06-22 stsp return got_error_from_errno("realloc");
996 e6bcace5 2021-06-22 stsp memcpy(*p + *len, seg, nseg);
997 e6bcace5 2021-06-22 stsp *len += nseg;
998 e6bcace5 2021-06-22 stsp return NULL;
1002 e6bcace5 2021-06-22 stsp static const struct got_error *
1003 e6bcace5 2021-06-22 stsp encodedelta(int *nd, struct got_pack_meta *m, struct got_raw_object *o,
1004 e6bcace5 2021-06-22 stsp off_t base_size, char **pp)
1006 e6bcace5 2021-06-22 stsp const struct got_error *err = NULL;
1008 e6bcace5 2021-06-22 stsp unsigned char buf[16], *bp;
1009 e6bcace5 2021-06-22 stsp int len, sz, i, j;
1011 e6bcace5 2021-06-22 stsp struct got_delta_instruction *d;
1013 e6bcace5 2021-06-22 stsp *pp = NULL;
1018 e6bcace5 2021-06-22 stsp p = malloc(sz);
1019 e6bcace5 2021-06-22 stsp if (p == NULL)
1020 e6bcace5 2021-06-22 stsp return got_error_from_errno("malloc");
1022 e6bcace5 2021-06-22 stsp /* base object size */
1023 e6bcace5 2021-06-22 stsp buf[0] = base_size & GOT_DELTA_SIZE_VAL_MASK;
1024 e6bcace5 2021-06-22 stsp n = base_size >> GOT_DELTA_SIZE_SHIFT;
1025 e6bcace5 2021-06-22 stsp for (i = 1; n > 0; i++) {
1026 e6bcace5 2021-06-22 stsp buf[i - 1] |= GOT_DELTA_SIZE_MORE;
1027 e6bcace5 2021-06-22 stsp buf[i] = n & GOT_DELTA_SIZE_VAL_MASK;
1028 e6bcace5 2021-06-22 stsp n >>= GOT_DELTA_SIZE_SHIFT;
1030 e6bcace5 2021-06-22 stsp err = append(&p, &len, &sz, buf, i);
1032 e6bcace5 2021-06-22 stsp return err;
1034 e6bcace5 2021-06-22 stsp /* target object size */
1035 e6bcace5 2021-06-22 stsp buf[0] = o->size & GOT_DELTA_SIZE_VAL_MASK;
1036 e6bcace5 2021-06-22 stsp n = o->size >> GOT_DELTA_SIZE_SHIFT;
1037 e6bcace5 2021-06-22 stsp for (i = 1; n > 0; i++) {
1038 e6bcace5 2021-06-22 stsp buf[i - 1] |= GOT_DELTA_SIZE_MORE;
1039 e6bcace5 2021-06-22 stsp buf[i] = n & GOT_DELTA_SIZE_VAL_MASK;
1040 e6bcace5 2021-06-22 stsp n >>= GOT_DELTA_SIZE_SHIFT;
1042 e6bcace5 2021-06-22 stsp err = append(&p, &len, &sz, buf, i);
1044 e6bcace5 2021-06-22 stsp return err;
1045 e6bcace5 2021-06-22 stsp for (j = 0; j < m->ndeltas; j++) {
1046 e6bcace5 2021-06-22 stsp d = &m->deltas[j];
1047 e6bcace5 2021-06-22 stsp if (d->copy) {
1048 e6bcace5 2021-06-22 stsp n = d->offset;
1049 e6bcace5 2021-06-22 stsp bp = &buf[1];
1050 e6bcace5 2021-06-22 stsp buf[0] = GOT_DELTA_BASE_COPY;
1051 e6bcace5 2021-06-22 stsp for (i = 0; i < 4; i++) {
1052 e6bcace5 2021-06-22 stsp /* DELTA_COPY_OFF1 ... DELTA_COPY_OFF4 */
1053 e6bcace5 2021-06-22 stsp buf[0] |= 1 << i;
1054 e6bcace5 2021-06-22 stsp *bp++ = n & 0xff;
1056 e6bcace5 2021-06-22 stsp if (n == 0)
1060 e6bcace5 2021-06-22 stsp n = d->len;
1061 e6bcace5 2021-06-22 stsp if (n != GOT_DELTA_COPY_DEFAULT_LEN) {
1062 e6bcace5 2021-06-22 stsp /* DELTA_COPY_LEN1 ... DELTA_COPY_LEN3 */
1063 e6bcace5 2021-06-22 stsp for (i = 0; i < 3 && n > 0; i++) {
1064 e6bcace5 2021-06-22 stsp buf[0] |= 1 << (i + 4);
1065 e6bcace5 2021-06-22 stsp *bp++ = n & 0xff;
1069 e6bcace5 2021-06-22 stsp err = append(&p, &len, &sz, buf, bp - buf);
1071 e6bcace5 2021-06-22 stsp return err;
1073 e6bcace5 2021-06-22 stsp char content[128];
1075 e6bcace5 2021-06-22 stsp if (fseeko(o->f, o->hdrlen + d->offset, SEEK_SET) == -1)
1076 e6bcace5 2021-06-22 stsp return got_error_from_errno("fseeko");
1078 e6bcace5 2021-06-22 stsp while (n != d->len) {
1079 e6bcace5 2021-06-22 stsp buf[0] = (d->len - n < 127) ? d->len - n : 127;
1080 e6bcace5 2021-06-22 stsp err = append(&p, &len, &sz, buf, 1);
1082 e6bcace5 2021-06-22 stsp return err;
1083 e6bcace5 2021-06-22 stsp r = fread(content, 1, buf[0], o->f);
1084 e6bcace5 2021-06-22 stsp if (r != buf[0])
1085 e6bcace5 2021-06-22 stsp return got_ferror(o->f, GOT_ERR_IO);
1086 e6bcace5 2021-06-22 stsp err = append(&p, &len, &sz, content, buf[0]);
1088 e6bcace5 2021-06-22 stsp return err;
1089 e6bcace5 2021-06-22 stsp n += buf[0];
1094 e6bcace5 2021-06-22 stsp *nd = len;
1095 e6bcace5 2021-06-22 stsp return NULL;
1098 e6bcace5 2021-06-22 stsp static int
1099 e6bcace5 2021-06-22 stsp packoff(char *hdr, off_t off)
1102 e6bcace5 2021-06-22 stsp char rbuf[8];
1104 e6bcace5 2021-06-22 stsp rbuf[0] = off & GOT_DELTA_SIZE_VAL_MASK;
1105 e6bcace5 2021-06-22 stsp for (i = 1; (off >>= GOT_DELTA_SIZE_SHIFT) != 0; i++) {
1106 e6bcace5 2021-06-22 stsp rbuf[i] = (--off & GOT_DELTA_SIZE_VAL_MASK) |
1107 e6bcace5 2021-06-22 stsp GOT_DELTA_SIZE_MORE;
1111 e6bcace5 2021-06-22 stsp while (i > 0)
1112 e6bcace5 2021-06-22 stsp hdr[j++] = rbuf[--i];
1116 e6bcace5 2021-06-22 stsp static const struct got_error *
1117 e6bcace5 2021-06-22 stsp genpack(uint8_t *pack_sha1, FILE *packfile,
1118 05118f5a 2021-06-22 stsp struct got_pack_meta **meta, int nmeta, int nours,
1119 05118f5a 2021-06-22 stsp int use_offset_deltas, struct got_repository *repo,
1120 05118f5a 2021-06-22 stsp got_pack_progress_cb progress_cb, void *progress_arg,
1121 05118f5a 2021-06-22 stsp got_cancel_cb cancel_cb, void *cancel_arg)
1123 e6bcace5 2021-06-22 stsp const struct got_error *err = NULL;
1124 05118f5a 2021-06-22 stsp int i, nh, nd;
1125 e6bcace5 2021-06-22 stsp SHA1_CTX ctx;
1126 e6bcace5 2021-06-22 stsp struct got_pack_meta *m;
1127 e6bcace5 2021-06-22 stsp struct got_raw_object *raw;
1128 e6bcace5 2021-06-22 stsp char *p = NULL, buf[32];
1129 e6bcace5 2021-06-22 stsp size_t outlen, n;
1130 e6bcace5 2021-06-22 stsp struct got_deflate_checksum csum;
1131 05118f5a 2021-06-22 stsp off_t packfile_size = 0;
1133 e6bcace5 2021-06-22 stsp SHA1Init(&ctx);
1134 e6bcace5 2021-06-22 stsp csum.output_sha1 = &ctx;
1135 e6bcace5 2021-06-22 stsp csum.output_crc = NULL;
1137 e6bcace5 2021-06-22 stsp err = hwrite(packfile, "PACK", 4, &ctx);
1139 e6bcace5 2021-06-22 stsp return err;
1140 e6bcace5 2021-06-22 stsp putbe32(buf, GOT_PACKFILE_VERSION);
1141 e6bcace5 2021-06-22 stsp err = hwrite(packfile, buf, 4, &ctx);
1143 e6bcace5 2021-06-22 stsp goto done;
1144 e6bcace5 2021-06-22 stsp putbe32(buf, nmeta);
1145 e6bcace5 2021-06-22 stsp err = hwrite(packfile, buf, 4, &ctx);
1147 e6bcace5 2021-06-22 stsp goto done;
1148 e6bcace5 2021-06-22 stsp qsort(meta, nmeta, sizeof(struct got_pack_meta *), write_order_cmp);
1149 05118f5a 2021-06-22 stsp for (i = 0; i < nmeta; i++) {
1150 05118f5a 2021-06-22 stsp if (progress_cb) {
1151 05118f5a 2021-06-22 stsp err = progress_cb(progress_arg, packfile_size, nours,
1152 05118f5a 2021-06-22 stsp nmeta, nmeta, i);
1154 05118f5a 2021-06-22 stsp goto done;
1156 e6bcace5 2021-06-22 stsp m = meta[i];
1157 e6bcace5 2021-06-22 stsp m->off = ftello(packfile);
1158 e6bcace5 2021-06-22 stsp err = got_object_raw_open(&raw, repo, &m->id, 8192);
1160 e6bcace5 2021-06-22 stsp goto done;
1161 e6bcace5 2021-06-22 stsp if (m->deltas == NULL) {
1162 e6bcace5 2021-06-22 stsp err = packhdr(&nh, buf, sizeof(buf),
1163 e6bcace5 2021-06-22 stsp m->obj_type, raw->size);
1165 e6bcace5 2021-06-22 stsp goto done;
1166 e6bcace5 2021-06-22 stsp err = hwrite(packfile, buf, nh, &ctx);
1168 e6bcace5 2021-06-22 stsp goto done;
1169 05118f5a 2021-06-22 stsp packfile_size += nh;
1170 e6bcace5 2021-06-22 stsp if (fseeko(raw->f, raw->hdrlen, SEEK_SET) == -1) {
1171 e6bcace5 2021-06-22 stsp err = got_error_from_errno("fseeko");
1172 e6bcace5 2021-06-22 stsp goto done;
1174 e6bcace5 2021-06-22 stsp err = got_deflate_to_file(&outlen, raw->f, packfile,
1177 e6bcace5 2021-06-22 stsp goto done;
1178 05118f5a 2021-06-22 stsp packfile_size += outlen;
1180 e6bcace5 2021-06-22 stsp FILE *delta_file;
1181 e6bcace5 2021-06-22 stsp struct got_raw_object *base_raw;
1182 e6bcace5 2021-06-22 stsp err = got_object_raw_open(&base_raw, repo,
1183 e6bcace5 2021-06-22 stsp &m->prev->id, 8192);
1185 e6bcace5 2021-06-22 stsp goto done;
1186 e6bcace5 2021-06-22 stsp err = encodedelta(&nd, m, raw, base_raw->size, &p);
1188 e6bcace5 2021-06-22 stsp goto done;
1189 e6bcace5 2021-06-22 stsp got_object_raw_close(base_raw);
1190 e6bcace5 2021-06-22 stsp if (use_offset_deltas && m->prev->off != 0) {
1191 e6bcace5 2021-06-22 stsp err = packhdr(&nh, buf, sizeof(buf),
1192 e6bcace5 2021-06-22 stsp GOT_OBJ_TYPE_OFFSET_DELTA, nd);
1194 e6bcace5 2021-06-22 stsp goto done;
1195 e6bcace5 2021-06-22 stsp nh += packoff(buf + nh,
1196 e6bcace5 2021-06-22 stsp m->off - m->prev->off);
1197 e6bcace5 2021-06-22 stsp err = hwrite(packfile, buf, nh, &ctx);
1199 e6bcace5 2021-06-22 stsp goto done;
1200 05118f5a 2021-06-22 stsp packfile_size += nh;
1202 e6bcace5 2021-06-22 stsp err = packhdr(&nh, buf, sizeof(buf),
1203 e6bcace5 2021-06-22 stsp GOT_OBJ_TYPE_REF_DELTA, nd);
1204 e6bcace5 2021-06-22 stsp err = hwrite(packfile, buf, nh, &ctx);
1206 e6bcace5 2021-06-22 stsp goto done;
1207 05118f5a 2021-06-22 stsp packfile_size += nh;
1208 e6bcace5 2021-06-22 stsp err = hwrite(packfile, m->prev->id.sha1,
1209 e6bcace5 2021-06-22 stsp sizeof(m->prev->id.sha1), &ctx);
1210 05118f5a 2021-06-22 stsp packfile_size += sizeof(m->prev->id.sha1);
1212 e6bcace5 2021-06-22 stsp goto done;
1214 e6bcace5 2021-06-22 stsp /* XXX need got_deflate_from_mem() */
1215 e6bcace5 2021-06-22 stsp delta_file = fmemopen(p, nd, "r");
1216 e6bcace5 2021-06-22 stsp if (delta_file == NULL) {
1217 e6bcace5 2021-06-22 stsp err = got_error_from_errno("fmemopen");
1218 e6bcace5 2021-06-22 stsp goto done;
1220 e6bcace5 2021-06-22 stsp err = got_deflate_to_file(&outlen, delta_file,
1221 e6bcace5 2021-06-22 stsp packfile, &csum);
1222 e6bcace5 2021-06-22 stsp fclose(delta_file);
1224 e6bcace5 2021-06-22 stsp goto done;
1225 05118f5a 2021-06-22 stsp packfile_size += outlen;
1229 e6bcace5 2021-06-22 stsp got_object_raw_close(raw);
1230 e6bcace5 2021-06-22 stsp raw = NULL;
1232 e6bcace5 2021-06-22 stsp SHA1Final(pack_sha1, &ctx);
1233 e6bcace5 2021-06-22 stsp n = fwrite(pack_sha1, 1, SHA1_DIGEST_LENGTH, packfile);
1234 e6bcace5 2021-06-22 stsp if (n != SHA1_DIGEST_LENGTH)
1235 e6bcace5 2021-06-22 stsp err = got_ferror(packfile, GOT_ERR_IO);
1236 05118f5a 2021-06-22 stsp packfile_size += SHA1_DIGEST_LENGTH;
1237 05118f5a 2021-06-22 stsp packfile_size += 16; /* pack file header */
1238 05118f5a 2021-06-22 stsp err = progress_cb(progress_arg, packfile_size, nours,
1239 05118f5a 2021-06-22 stsp nmeta, nmeta, nmeta);
1241 05118f5a 2021-06-22 stsp goto done;
1244 e6bcace5 2021-06-22 stsp return err;
1247 e6bcace5 2021-06-22 stsp const struct got_error *
1248 e6bcace5 2021-06-22 stsp got_pack_create(uint8_t *packsha1, FILE *packfile,
1249 e6bcace5 2021-06-22 stsp struct got_object_id **theirs, int ntheirs,
1250 e6bcace5 2021-06-22 stsp struct got_object_id **ours, int nours,
1251 05118f5a 2021-06-22 stsp struct got_repository *repo, int loose_obj_only,
1252 05118f5a 2021-06-22 stsp got_pack_progress_cb progress_cb, void *progress_arg,
1253 05118f5a 2021-06-22 stsp got_cancel_cb cancel_cb, void *cancel_arg)
1255 e6bcace5 2021-06-22 stsp const struct got_error *err;
1256 e6bcace5 2021-06-22 stsp struct got_pack_meta **meta;
1257 e6bcace5 2021-06-22 stsp int nmeta;
1259 e6bcace5 2021-06-22 stsp err = read_meta(&meta, &nmeta, theirs, ntheirs, ours, nours, repo,
1260 05118f5a 2021-06-22 stsp loose_obj_only, progress_cb, progress_arg, cancel_cb, cancel_arg);
1262 e6bcace5 2021-06-22 stsp return err;
1264 05118f5a 2021-06-22 stsp if (nmeta == 0) {
1265 05118f5a 2021-06-22 stsp err = got_error(GOT_ERR_CANNOT_PACK);
1266 05118f5a 2021-06-22 stsp goto done;
1269 05118f5a 2021-06-22 stsp err = pick_deltas(meta, nmeta, nours, repo,
1270 05118f5a 2021-06-22 stsp progress_cb, progress_arg, cancel_cb, cancel_arg);
1272 e6bcace5 2021-06-22 stsp goto done;
1274 05118f5a 2021-06-22 stsp err = genpack(packsha1, packfile, meta, nmeta, nours, 1, repo,
1275 05118f5a 2021-06-22 stsp progress_cb, progress_arg, cancel_cb, cancel_arg);
1277 e6bcace5 2021-06-22 stsp goto done;
1279 e6bcace5 2021-06-22 stsp free_nmeta(meta, nmeta);
1280 e6bcace5 2021-06-22 stsp return err;
