1 13b2bc37 2022-10-23 stsp /*
   2 13b2bc37 2022-10-23 stsp  * Copyright (c) 2022 Stefan Sperling <stsp@openbsd.org>
   3 13b2bc37 2022-10-23 stsp  *
   4 13b2bc37 2022-10-23 stsp  * Permission to use, copy, modify, and distribute this software for any
   5 13b2bc37 2022-10-23 stsp  * purpose with or without fee is hereby granted, provided that the above
   6 13b2bc37 2022-10-23 stsp  * copyright notice and this permission notice appear in all copies.
   7 13b2bc37 2022-10-23 stsp  *
   8 13b2bc37 2022-10-23 stsp  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   9 13b2bc37 2022-10-23 stsp  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  10 13b2bc37 2022-10-23 stsp  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  11 13b2bc37 2022-10-23 stsp  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  12 13b2bc37 2022-10-23 stsp  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  13 13b2bc37 2022-10-23 stsp  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  14 13b2bc37 2022-10-23 stsp  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  15 13b2bc37 2022-10-23 stsp  */
  16 13b2bc37 2022-10-23 stsp 
  17 13b2bc37 2022-10-23 stsp #include <sys/queue.h>
  18 13b2bc37 2022-10-23 stsp #include <sys/stat.h>
  19 13b2bc37 2022-10-23 stsp #include <sys/tree.h>
  20 13b2bc37 2022-10-23 stsp #include <sys/types.h>
  21 13b2bc37 2022-10-23 stsp 
  22 13b2bc37 2022-10-23 stsp #include <event.h>
  23 13b2bc37 2022-10-23 stsp #include <errno.h>
  24 13b2bc37 2022-10-23 stsp #include <imsg.h>
  25 13b2bc37 2022-10-23 stsp #include <signal.h>
  26 13b2bc37 2022-10-23 stsp #include <siphash.h>
  27 13b2bc37 2022-10-23 stsp #include <stdio.h>
  28 13b2bc37 2022-10-23 stsp #include <stdlib.h>
  29 13b2bc37 2022-10-23 stsp #include <string.h>
  30 13b2bc37 2022-10-23 stsp #include <limits.h>
  31 13b2bc37 2022-10-23 stsp #include <poll.h>
  32 13b2bc37 2022-10-23 stsp #include <sha1.h>
  33 5822e79e 2023-02-23 op #include <sha2.h>
  34 13b2bc37 2022-10-23 stsp #include <unistd.h>
  35 13b2bc37 2022-10-23 stsp #include <zlib.h>
  36 13b2bc37 2022-10-23 stsp 
  37 13b2bc37 2022-10-23 stsp #include "buf.h"
  38 13b2bc37 2022-10-23 stsp 
  39 13b2bc37 2022-10-23 stsp #include "got_error.h"
  40 13b2bc37 2022-10-23 stsp #include "got_repository.h"
  41 13b2bc37 2022-10-23 stsp #include "got_object.h"
  42 13b2bc37 2022-10-23 stsp #include "got_reference.h"
  43 13b2bc37 2022-10-23 stsp #include "got_path.h"
  44 13b2bc37 2022-10-23 stsp 
  45 13b2bc37 2022-10-23 stsp #include "got_lib_delta.h"
  46 13b2bc37 2022-10-23 stsp #include "got_lib_delta_cache.h"
  47 ae25a666 2023-02-23 op #include "got_lib_hash.h"
  48 13b2bc37 2022-10-23 stsp #include "got_lib_object.h"
  49 13b2bc37 2022-10-23 stsp #include "got_lib_object_cache.h"
  50 9afa3de2 2023-04-04 stsp #include "got_lib_object_idset.h"
  51 9afa3de2 2023-04-04 stsp #include "got_lib_object_parse.h"
  52 13b2bc37 2022-10-23 stsp #include "got_lib_ratelimit.h"
  53 13b2bc37 2022-10-23 stsp #include "got_lib_pack.h"
  54 13b2bc37 2022-10-23 stsp #include "got_lib_pack_index.h"
  55 13b2bc37 2022-10-23 stsp #include "got_lib_repository.h"
  56 13b2bc37 2022-10-23 stsp #include "got_lib_poll.h"
  57 13b2bc37 2022-10-23 stsp 
  58 13b2bc37 2022-10-23 stsp #include "log.h"
  59 13b2bc37 2022-10-23 stsp #include "gotd.h"
  60 13b2bc37 2022-10-23 stsp #include "repo_write.h"
  61 13b2bc37 2022-10-23 stsp 
  62 13b2bc37 2022-10-23 stsp #ifndef nitems
  63 13b2bc37 2022-10-23 stsp #define nitems(_a)	(sizeof((_a)) / sizeof((_a)[0]))
  64 13b2bc37 2022-10-23 stsp #endif
  65 13b2bc37 2022-10-23 stsp 
  66 13b2bc37 2022-10-23 stsp static struct repo_write {
  67 13b2bc37 2022-10-23 stsp 	pid_t pid;
  68 13b2bc37 2022-10-23 stsp 	const char *title;
  69 13b2bc37 2022-10-23 stsp 	struct got_repository *repo;
  70 13b2bc37 2022-10-23 stsp 	int *pack_fds;
  71 13b2bc37 2022-10-23 stsp 	int *temp_fds;
  72 ae7c1b78 2023-01-10 stsp 	int session_fd;
  73 ae7c1b78 2023-01-10 stsp 	struct gotd_imsgev session_iev;
  74 9afa3de2 2023-04-04 stsp 	struct got_pathlist_head *protected_tag_namespaces;
  75 9afa3de2 2023-04-04 stsp 	struct got_pathlist_head *protected_branch_namespaces;
  76 9afa3de2 2023-04-04 stsp 	struct got_pathlist_head *protected_branches;
  77 13b2bc37 2022-10-23 stsp } repo_write;
  78 13b2bc37 2022-10-23 stsp 
  79 13b2bc37 2022-10-23 stsp struct gotd_ref_update {
  80 13b2bc37 2022-10-23 stsp 	STAILQ_ENTRY(gotd_ref_update) entry;
  81 13b2bc37 2022-10-23 stsp 	struct got_reference *ref;
  82 13b2bc37 2022-10-23 stsp 	int ref_is_new;
  83 9a8e357c 2023-01-28 op 	int delete_ref;
  84 13b2bc37 2022-10-23 stsp 	struct got_object_id old_id;
  85 13b2bc37 2022-10-23 stsp 	struct got_object_id new_id;
  86 13b2bc37 2022-10-23 stsp };
  87 13b2bc37 2022-10-23 stsp STAILQ_HEAD(gotd_ref_updates, gotd_ref_update);
  88 13b2bc37 2022-10-23 stsp 
  89 1a52c9bf 2022-12-30 stsp static struct repo_write_client {
  90 13b2bc37 2022-10-23 stsp 	uint32_t			 id;
  91 13b2bc37 2022-10-23 stsp 	int				 fd;
  92 7fec5f4a 2022-10-28 stsp 	int				 pack_pipe;
  93 13b2bc37 2022-10-23 stsp 	struct got_pack			 pack;
  94 13b2bc37 2022-10-23 stsp 	uint8_t				 pack_sha1[SHA1_DIGEST_LENGTH];
  95 13b2bc37 2022-10-23 stsp 	int				 packidx_fd;
  96 13b2bc37 2022-10-23 stsp 	struct gotd_ref_updates		 ref_updates;
  97 13b2bc37 2022-10-23 stsp 	int				 nref_updates;
  98 9a8e357c 2023-01-28 op 	int				 nref_del;
  99 0ff2c315 2023-01-18 stsp 	int				 nref_new;
 100 1a52c9bf 2022-12-30 stsp } repo_write_client;
 101 13b2bc37 2022-10-23 stsp 
 102 13b2bc37 2022-10-23 stsp static volatile sig_atomic_t sigint_received;
 103 13b2bc37 2022-10-23 stsp static volatile sig_atomic_t sigterm_received;
 104 13b2bc37 2022-10-23 stsp 
 105 13b2bc37 2022-10-23 stsp static void
 106 13b2bc37 2022-10-23 stsp catch_sigint(int signo)
 107 13b2bc37 2022-10-23 stsp {
 108 13b2bc37 2022-10-23 stsp 	sigint_received = 1;
 109 13b2bc37 2022-10-23 stsp }
 110 13b2bc37 2022-10-23 stsp 
 111 13b2bc37 2022-10-23 stsp static void
 112 13b2bc37 2022-10-23 stsp catch_sigterm(int signo)
 113 13b2bc37 2022-10-23 stsp {
 114 13b2bc37 2022-10-23 stsp 	sigterm_received = 1;
 115 13b2bc37 2022-10-23 stsp }
 116 13b2bc37 2022-10-23 stsp 
 117 13b2bc37 2022-10-23 stsp static const struct got_error *
 118 13b2bc37 2022-10-23 stsp check_cancelled(void *arg)
 119 13b2bc37 2022-10-23 stsp {
 120 13b2bc37 2022-10-23 stsp 	if (sigint_received || sigterm_received)
 121 13b2bc37 2022-10-23 stsp 		return got_error(GOT_ERR_CANCELLED);
 122 13b2bc37 2022-10-23 stsp 
 123 13b2bc37 2022-10-23 stsp 	return NULL;
 124 13b2bc37 2022-10-23 stsp }
 125 13b2bc37 2022-10-23 stsp 
 126 13b2bc37 2022-10-23 stsp static const struct got_error *
 127 13b2bc37 2022-10-23 stsp send_peeled_tag_ref(struct got_reference *ref, struct got_object *obj,
 128 13b2bc37 2022-10-23 stsp     struct imsgbuf *ibuf)
 129 13b2bc37 2022-10-23 stsp {
 130 13b2bc37 2022-10-23 stsp 	const struct got_error *err = NULL;
 131 13b2bc37 2022-10-23 stsp 	struct got_tag_object *tag;
 132 13b2bc37 2022-10-23 stsp 	size_t namelen, len;
 133 13b2bc37 2022-10-23 stsp 	char *peeled_refname = NULL;
 134 13b2bc37 2022-10-23 stsp 	struct got_object_id *id;
 135 13b2bc37 2022-10-23 stsp 	struct ibuf *wbuf;
 136 13b2bc37 2022-10-23 stsp 
 137 13b2bc37 2022-10-23 stsp 	err = got_object_tag_open(&tag, repo_write.repo, obj);
 138 13b2bc37 2022-10-23 stsp 	if (err)
 139 13b2bc37 2022-10-23 stsp 		return err;
 140 13b2bc37 2022-10-23 stsp 
 141 13b2bc37 2022-10-23 stsp 	if (asprintf(&peeled_refname, "%s^{}", got_ref_get_name(ref)) == -1) {
 142 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("asprintf");
 143 13b2bc37 2022-10-23 stsp 		goto done;
 144 13b2bc37 2022-10-23 stsp 	}
 145 13b2bc37 2022-10-23 stsp 
 146 13b2bc37 2022-10-23 stsp 	id = got_object_tag_get_object_id(tag);
 147 13b2bc37 2022-10-23 stsp 	namelen = strlen(peeled_refname);
 148 13b2bc37 2022-10-23 stsp 
 149 13b2bc37 2022-10-23 stsp 	len = sizeof(struct gotd_imsg_ref) + namelen;
 150 13b2bc37 2022-10-23 stsp 	if (len > MAX_IMSGSIZE - IMSG_HEADER_SIZE) {
 151 13b2bc37 2022-10-23 stsp 		err = got_error(GOT_ERR_NO_SPACE);
 152 13b2bc37 2022-10-23 stsp 		goto done;
 153 13b2bc37 2022-10-23 stsp 	}
 154 13b2bc37 2022-10-23 stsp 
 155 13b2bc37 2022-10-23 stsp 	wbuf = imsg_create(ibuf, GOTD_IMSG_REF, PROC_REPO_WRITE,
 156 13b2bc37 2022-10-23 stsp 	    repo_write.pid, len);
 157 13b2bc37 2022-10-23 stsp 	if (wbuf == NULL) {
 158 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("imsg_create REF");
 159 13b2bc37 2022-10-23 stsp 		goto done;
 160 13b2bc37 2022-10-23 stsp 	}
 161 13b2bc37 2022-10-23 stsp 
 162 13b2bc37 2022-10-23 stsp 	/* Keep in sync with struct gotd_imsg_ref definition. */
 163 13b2bc37 2022-10-23 stsp 	if (imsg_add(wbuf, id->sha1, SHA1_DIGEST_LENGTH) == -1) {
 164 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("imsg_add REF");
 165 13b2bc37 2022-10-23 stsp 		goto done;
 166 13b2bc37 2022-10-23 stsp 	}
 167 13b2bc37 2022-10-23 stsp 	if (imsg_add(wbuf, &namelen, sizeof(namelen)) == -1) {
 168 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("imsg_add REF");
 169 13b2bc37 2022-10-23 stsp 		goto done;
 170 13b2bc37 2022-10-23 stsp 	}
 171 13b2bc37 2022-10-23 stsp 	if (imsg_add(wbuf, peeled_refname, namelen) == -1) {
 172 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("imsg_add REF");
 173 13b2bc37 2022-10-23 stsp 		goto done;
 174 13b2bc37 2022-10-23 stsp 	}
 175 13b2bc37 2022-10-23 stsp 
 176 13b2bc37 2022-10-23 stsp 	wbuf->fd = -1;
 177 13b2bc37 2022-10-23 stsp 	imsg_close(ibuf, wbuf);
 178 13b2bc37 2022-10-23 stsp done:
 179 13b2bc37 2022-10-23 stsp 	got_object_tag_close(tag);
 180 13b2bc37 2022-10-23 stsp 	return err;
 181 13b2bc37 2022-10-23 stsp }
 182 13b2bc37 2022-10-23 stsp 
 183 13b2bc37 2022-10-23 stsp static const struct got_error *
 184 13b2bc37 2022-10-23 stsp send_ref(struct got_reference *ref, struct imsgbuf *ibuf)
 185 13b2bc37 2022-10-23 stsp {
 186 13b2bc37 2022-10-23 stsp 	const struct got_error *err;
 187 13b2bc37 2022-10-23 stsp 	const char *refname = got_ref_get_name(ref);
 188 13b2bc37 2022-10-23 stsp 	size_t namelen;
 189 13b2bc37 2022-10-23 stsp 	struct got_object_id *id = NULL;
 190 13b2bc37 2022-10-23 stsp 	struct got_object *obj = NULL;
 191 13b2bc37 2022-10-23 stsp 	size_t len;
 192 13b2bc37 2022-10-23 stsp 	struct ibuf *wbuf;
 193 13b2bc37 2022-10-23 stsp 
 194 13b2bc37 2022-10-23 stsp 	namelen = strlen(refname);
 195 13b2bc37 2022-10-23 stsp 
 196 13b2bc37 2022-10-23 stsp 	len = sizeof(struct gotd_imsg_ref) + namelen;
 197 13b2bc37 2022-10-23 stsp 	if (len > MAX_IMSGSIZE - IMSG_HEADER_SIZE)
 198 13b2bc37 2022-10-23 stsp 		return got_error(GOT_ERR_NO_SPACE);
 199 13b2bc37 2022-10-23 stsp 
 200 13b2bc37 2022-10-23 stsp 	err = got_ref_resolve(&id, repo_write.repo, ref);
 201 13b2bc37 2022-10-23 stsp 	if (err)
 202 13b2bc37 2022-10-23 stsp 		return err;
 203 13b2bc37 2022-10-23 stsp 
 204 13b2bc37 2022-10-23 stsp 	wbuf = imsg_create(ibuf, GOTD_IMSG_REF, PROC_REPO_WRITE,
 205 13b2bc37 2022-10-23 stsp 	    repo_write.pid, len);
 206 13b2bc37 2022-10-23 stsp 	if (wbuf == NULL) {
 207 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("imsg_create REF");
 208 13b2bc37 2022-10-23 stsp 		goto done;
 209 13b2bc37 2022-10-23 stsp 	}
 210 13b2bc37 2022-10-23 stsp 
 211 13b2bc37 2022-10-23 stsp 	/* Keep in sync with struct gotd_imsg_ref definition. */
 212 13b2bc37 2022-10-23 stsp 	if (imsg_add(wbuf, id->sha1, SHA1_DIGEST_LENGTH) == -1)
 213 13b2bc37 2022-10-23 stsp 		return got_error_from_errno("imsg_add REF");
 214 13b2bc37 2022-10-23 stsp 	if (imsg_add(wbuf, &namelen, sizeof(namelen)) == -1)
 215 13b2bc37 2022-10-23 stsp 		return got_error_from_errno("imsg_add REF");
 216 13b2bc37 2022-10-23 stsp 	if (imsg_add(wbuf, refname, namelen) == -1)
 217 13b2bc37 2022-10-23 stsp 		return got_error_from_errno("imsg_add REF");
 218 13b2bc37 2022-10-23 stsp 
 219 13b2bc37 2022-10-23 stsp 	wbuf->fd = -1;
 220 13b2bc37 2022-10-23 stsp 	imsg_close(ibuf, wbuf);
 221 13b2bc37 2022-10-23 stsp 
 222 13b2bc37 2022-10-23 stsp 	err = got_object_open(&obj, repo_write.repo, id);
 223 13b2bc37 2022-10-23 stsp 	if (err)
 224 13b2bc37 2022-10-23 stsp 		goto done;
 225 13b2bc37 2022-10-23 stsp 	if (obj->type == GOT_OBJ_TYPE_TAG)
 226 13b2bc37 2022-10-23 stsp 		err = send_peeled_tag_ref(ref, obj, ibuf);
 227 13b2bc37 2022-10-23 stsp done:
 228 13b2bc37 2022-10-23 stsp 	if (obj)
 229 13b2bc37 2022-10-23 stsp 		got_object_close(obj);
 230 13b2bc37 2022-10-23 stsp 	free(id);
 231 13b2bc37 2022-10-23 stsp 	return err;
 232 13b2bc37 2022-10-23 stsp }
 233 13b2bc37 2022-10-23 stsp 
 234 13b2bc37 2022-10-23 stsp static const struct got_error *
 235 1a52c9bf 2022-12-30 stsp list_refs(struct imsg *imsg)
 236 13b2bc37 2022-10-23 stsp {
 237 13b2bc37 2022-10-23 stsp 	const struct got_error *err;
 238 1a52c9bf 2022-12-30 stsp 	struct repo_write_client *client = &repo_write_client;
 239 13b2bc37 2022-10-23 stsp 	struct got_reflist_head refs;
 240 13b2bc37 2022-10-23 stsp 	struct got_reflist_entry *re;
 241 13b2bc37 2022-10-23 stsp 	struct gotd_imsg_list_refs_internal ireq;
 242 13b2bc37 2022-10-23 stsp 	size_t datalen;
 243 13b2bc37 2022-10-23 stsp 	struct gotd_imsg_reflist irefs;
 244 13b2bc37 2022-10-23 stsp 	struct imsgbuf ibuf;
 245 13b2bc37 2022-10-23 stsp 	int client_fd = imsg->fd;
 246 13b2bc37 2022-10-23 stsp 
 247 13b2bc37 2022-10-23 stsp 	TAILQ_INIT(&refs);
 248 13b2bc37 2022-10-23 stsp 
 249 13b2bc37 2022-10-23 stsp 	if (client_fd == -1)
 250 13b2bc37 2022-10-23 stsp 		return got_error(GOT_ERR_PRIVSEP_NO_FD);
 251 13b2bc37 2022-10-23 stsp 
 252 13b2bc37 2022-10-23 stsp 	datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
 253 13b2bc37 2022-10-23 stsp 	if (datalen != sizeof(ireq))
 254 13b2bc37 2022-10-23 stsp 		return got_error(GOT_ERR_PRIVSEP_LEN);
 255 13b2bc37 2022-10-23 stsp 	memcpy(&ireq, imsg->data, sizeof(ireq));
 256 13b2bc37 2022-10-23 stsp 
 257 1a52c9bf 2022-12-30 stsp 	if (ireq.client_id == 0)
 258 1a52c9bf 2022-12-30 stsp 		return got_error(GOT_ERR_CLIENT_ID);
 259 1a52c9bf 2022-12-30 stsp 	if (client->id != 0) {
 260 1a52c9bf 2022-12-30 stsp 		return got_error_msg(GOT_ERR_CLIENT_ID,
 261 1a52c9bf 2022-12-30 stsp 		    "duplicate list-refs request");
 262 1a52c9bf 2022-12-30 stsp 	}
 263 1a52c9bf 2022-12-30 stsp 	client->id = ireq.client_id;
 264 1a52c9bf 2022-12-30 stsp 	client->fd = client_fd;
 265 1a52c9bf 2022-12-30 stsp 	client->nref_updates = 0;
 266 9a8e357c 2023-01-28 op 	client->nref_del = 0;
 267 0ff2c315 2023-01-18 stsp 	client->nref_new = 0;
 268 13b2bc37 2022-10-23 stsp 
 269 13b2bc37 2022-10-23 stsp 	imsg_init(&ibuf, client_fd);
 270 13b2bc37 2022-10-23 stsp 
 271 13b2bc37 2022-10-23 stsp 	err = got_ref_list(&refs, repo_write.repo, "",
 272 13b2bc37 2022-10-23 stsp 	    got_ref_cmp_by_name, NULL);
 273 13b2bc37 2022-10-23 stsp 	if (err)
 274 13b2bc37 2022-10-23 stsp 		return err;
 275 13b2bc37 2022-10-23 stsp 
 276 13b2bc37 2022-10-23 stsp 	memset(&irefs, 0, sizeof(irefs));
 277 13b2bc37 2022-10-23 stsp 	TAILQ_FOREACH(re, &refs, entry) {
 278 13b2bc37 2022-10-23 stsp 		struct got_object_id *id;
 279 13b2bc37 2022-10-23 stsp 		int obj_type;
 280 13b2bc37 2022-10-23 stsp 
 281 13b2bc37 2022-10-23 stsp 		if (got_ref_is_symbolic(re->ref))
 282 13b2bc37 2022-10-23 stsp 			continue;
 283 13b2bc37 2022-10-23 stsp 
 284 13b2bc37 2022-10-23 stsp 		irefs.nrefs++;
 285 13b2bc37 2022-10-23 stsp 
 286 13b2bc37 2022-10-23 stsp 		/* Account for a peeled tag refs. */
 287 13b2bc37 2022-10-23 stsp 		err = got_ref_resolve(&id, repo_write.repo, re->ref);
 288 13b2bc37 2022-10-23 stsp 		if (err)
 289 13b2bc37 2022-10-23 stsp 			goto done;
 290 e26970cc 2023-01-10 op 		err = got_object_get_type(&obj_type, repo_write.repo, id);
 291 13b2bc37 2022-10-23 stsp 		free(id);
 292 13b2bc37 2022-10-23 stsp 		if (err)
 293 13b2bc37 2022-10-23 stsp 			goto done;
 294 13b2bc37 2022-10-23 stsp 		if (obj_type == GOT_OBJ_TYPE_TAG)
 295 13b2bc37 2022-10-23 stsp 			irefs.nrefs++;
 296 13b2bc37 2022-10-23 stsp 	}
 297 13b2bc37 2022-10-23 stsp 
 298 13b2bc37 2022-10-23 stsp 	if (imsg_compose(&ibuf, GOTD_IMSG_REFLIST, PROC_REPO_WRITE,
 299 13b2bc37 2022-10-23 stsp 	    repo_write.pid, -1, &irefs, sizeof(irefs)) == -1) {
 300 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("imsg_compose REFLIST");
 301 13b2bc37 2022-10-23 stsp 		goto done;
 302 13b2bc37 2022-10-23 stsp 	}
 303 13b2bc37 2022-10-23 stsp 
 304 13b2bc37 2022-10-23 stsp 	TAILQ_FOREACH(re, &refs, entry) {
 305 13b2bc37 2022-10-23 stsp 		if (got_ref_is_symbolic(re->ref))
 306 13b2bc37 2022-10-23 stsp 			continue;
 307 13b2bc37 2022-10-23 stsp 		err = send_ref(re->ref, &ibuf);
 308 13b2bc37 2022-10-23 stsp 		if (err)
 309 13b2bc37 2022-10-23 stsp 			goto done;
 310 13b2bc37 2022-10-23 stsp 	}
 311 13b2bc37 2022-10-23 stsp 
 312 13b2bc37 2022-10-23 stsp 	err = gotd_imsg_flush(&ibuf);
 313 13b2bc37 2022-10-23 stsp done:
 314 13b2bc37 2022-10-23 stsp 	got_ref_list_free(&refs);
 315 13b2bc37 2022-10-23 stsp 	imsg_clear(&ibuf);
 316 13b2bc37 2022-10-23 stsp 	return err;
 317 13b2bc37 2022-10-23 stsp }
 318 13b2bc37 2022-10-23 stsp 
 319 13b2bc37 2022-10-23 stsp static const struct got_error *
 320 9afa3de2 2023-04-04 stsp validate_namespace(const char *namespace)
 321 13b2bc37 2022-10-23 stsp {
 322 13b2bc37 2022-10-23 stsp 	size_t len = strlen(namespace);
 323 13b2bc37 2022-10-23 stsp 
 324 13b2bc37 2022-10-23 stsp 	if (len < 5 || strncmp("refs/", namespace, 5) != 0 ||
 325 13b2bc37 2022-10-23 stsp 	    namespace[len -1] != '/') {
 326 13b2bc37 2022-10-23 stsp 		return got_error_fmt(GOT_ERR_BAD_REF_NAME,
 327 13b2bc37 2022-10-23 stsp 		    "reference namespace '%s'", namespace);
 328 13b2bc37 2022-10-23 stsp 	}
 329 13b2bc37 2022-10-23 stsp 
 330 9afa3de2 2023-04-04 stsp 	return NULL;
 331 9afa3de2 2023-04-04 stsp }
 332 9afa3de2 2023-04-04 stsp 
 333 9afa3de2 2023-04-04 stsp static const struct got_error *
 334 9afa3de2 2023-04-04 stsp protect_ref_namespace(const char *refname, const char *namespace)
 335 9afa3de2 2023-04-04 stsp {
 336 9afa3de2 2023-04-04 stsp 	const struct got_error *err;
 337 9afa3de2 2023-04-04 stsp 
 338 9afa3de2 2023-04-04 stsp 	err = validate_namespace(namespace);
 339 9afa3de2 2023-04-04 stsp 	if (err)
 340 9afa3de2 2023-04-04 stsp 		return err;
 341 9afa3de2 2023-04-04 stsp 
 342 9afa3de2 2023-04-04 stsp 	if (strncmp(namespace, refname, strlen(namespace)) == 0)
 343 13b2bc37 2022-10-23 stsp 		return got_error_fmt(GOT_ERR_REFS_PROTECTED, "%s", namespace);
 344 13b2bc37 2022-10-23 stsp 
 345 13b2bc37 2022-10-23 stsp 	return NULL;
 346 13b2bc37 2022-10-23 stsp }
 347 13b2bc37 2022-10-23 stsp 
 348 13b2bc37 2022-10-23 stsp static const struct got_error *
 349 9afa3de2 2023-04-04 stsp verify_object_type(struct got_object_id *id, int expected_obj_type,
 350 9afa3de2 2023-04-04 stsp     struct got_pack *pack, struct got_packidx *packidx)
 351 9afa3de2 2023-04-04 stsp {
 352 9afa3de2 2023-04-04 stsp 	const struct got_error *err;
 353 9afa3de2 2023-04-04 stsp 	char hex[SHA1_DIGEST_STRING_LENGTH];
 354 9afa3de2 2023-04-04 stsp 	struct got_object *obj;
 355 9afa3de2 2023-04-04 stsp 	int idx;
 356 9afa3de2 2023-04-04 stsp 	const char *typestr;
 357 9afa3de2 2023-04-04 stsp 
 358 9afa3de2 2023-04-04 stsp 	idx = got_packidx_get_object_idx(packidx, id);
 359 9afa3de2 2023-04-04 stsp 	if (idx == -1) {
 360 9afa3de2 2023-04-04 stsp 		got_sha1_digest_to_str(id->sha1, hex, sizeof(hex));
 361 9afa3de2 2023-04-04 stsp 		return got_error_fmt(GOT_ERR_BAD_PACKFILE,
 362 9afa3de2 2023-04-04 stsp 		    "object %s is missing from pack file", hex);
 363 9afa3de2 2023-04-04 stsp 	}
 364 9afa3de2 2023-04-04 stsp 
 365 9afa3de2 2023-04-04 stsp 	err = got_object_open_from_packfile(&obj, id, pack, packidx,
 366 9afa3de2 2023-04-04 stsp 	    idx, repo_write.repo);
 367 9afa3de2 2023-04-04 stsp 	if (err)
 368 9afa3de2 2023-04-04 stsp 		return err;
 369 9afa3de2 2023-04-04 stsp 
 370 9afa3de2 2023-04-04 stsp 	if (obj->type != expected_obj_type) {
 371 9afa3de2 2023-04-04 stsp 		got_sha1_digest_to_str(id->sha1, hex, sizeof(hex));
 372 9afa3de2 2023-04-04 stsp 		got_object_type_label(&typestr, expected_obj_type);
 373 9afa3de2 2023-04-04 stsp 		err = got_error_fmt(GOT_ERR_OBJ_TYPE,
 374 9afa3de2 2023-04-04 stsp 		    "%s is not pointing at a %s object", hex, typestr);
 375 9afa3de2 2023-04-04 stsp 	}
 376 9afa3de2 2023-04-04 stsp 	got_object_close(obj);
 377 9afa3de2 2023-04-04 stsp 	return err;
 378 9afa3de2 2023-04-04 stsp }
 379 9afa3de2 2023-04-04 stsp 
 380 9afa3de2 2023-04-04 stsp static const struct got_error *
 381 9afa3de2 2023-04-04 stsp protect_tag_namespace(const char *namespace, struct got_pack *pack,
 382 9afa3de2 2023-04-04 stsp     struct got_packidx *packidx, struct gotd_ref_update *ref_update)
 383 9afa3de2 2023-04-04 stsp {
 384 9afa3de2 2023-04-04 stsp 	const struct got_error *err;
 385 9afa3de2 2023-04-04 stsp 
 386 9afa3de2 2023-04-04 stsp 	err = validate_namespace(namespace);
 387 9afa3de2 2023-04-04 stsp 	if (err)
 388 9afa3de2 2023-04-04 stsp 		return err;
 389 9afa3de2 2023-04-04 stsp 
 390 9afa3de2 2023-04-04 stsp 	if (strncmp(namespace, got_ref_get_name(ref_update->ref),
 391 9afa3de2 2023-04-04 stsp 	    strlen(namespace)) != 0)
 392 9afa3de2 2023-04-04 stsp 		return NULL;
 393 9afa3de2 2023-04-04 stsp 
 394 9afa3de2 2023-04-04 stsp 	if (!ref_update->ref_is_new)
 395 9afa3de2 2023-04-04 stsp 		return got_error_fmt(GOT_ERR_REFS_PROTECTED, "%s", namespace);
 396 9afa3de2 2023-04-04 stsp 
 397 9afa3de2 2023-04-04 stsp 	return verify_object_type(&ref_update->new_id, GOT_OBJ_TYPE_TAG,
 398 9afa3de2 2023-04-04 stsp 	    pack, packidx);
 399 9afa3de2 2023-04-04 stsp }
 400 9afa3de2 2023-04-04 stsp 
 401 9afa3de2 2023-04-04 stsp static const struct got_error *
 402 9afa3de2 2023-04-04 stsp protect_require_yca(struct got_object_id *tip_id,
 403 9afa3de2 2023-04-04 stsp     size_t max_commits_to_traverse, struct got_pack *pack,
 404 9afa3de2 2023-04-04 stsp     struct got_packidx *packidx, struct got_reference *ref)
 405 9afa3de2 2023-04-04 stsp {
 406 9afa3de2 2023-04-04 stsp 	const struct got_error *err;
 407 9afa3de2 2023-04-04 stsp 	uint8_t *buf = NULL;
 408 9afa3de2 2023-04-04 stsp 	size_t len;
 409 9afa3de2 2023-04-04 stsp 	struct got_object_id *expected_yca_id = NULL;
 410 9afa3de2 2023-04-04 stsp 	struct got_object *obj = NULL;
 411 9afa3de2 2023-04-04 stsp 	struct got_commit_object *commit = NULL;
 412 9afa3de2 2023-04-04 stsp 	char hex[SHA1_DIGEST_STRING_LENGTH];
 413 9afa3de2 2023-04-04 stsp 	const struct got_object_id_queue *parent_ids;
 414 9afa3de2 2023-04-04 stsp 	struct got_object_id_queue ids;
 415 9afa3de2 2023-04-04 stsp 	struct got_object_qid *pid, *qid;
 416 9afa3de2 2023-04-04 stsp 	struct got_object_idset *traversed_set = NULL;
 417 9afa3de2 2023-04-04 stsp 	int found_yca = 0, obj_type;
 418 9afa3de2 2023-04-04 stsp 
 419 9afa3de2 2023-04-04 stsp 	STAILQ_INIT(&ids);
 420 9afa3de2 2023-04-04 stsp 
 421 9afa3de2 2023-04-04 stsp 	err = got_ref_resolve(&expected_yca_id, repo_write.repo, ref);
 422 9afa3de2 2023-04-04 stsp 	if (err)
 423 9afa3de2 2023-04-04 stsp 		return err;
 424 9afa3de2 2023-04-04 stsp 	
 425 9afa3de2 2023-04-04 stsp 	err = got_object_get_type(&obj_type, repo_write.repo, expected_yca_id);
 426 9afa3de2 2023-04-04 stsp 	if (err)
 427 9afa3de2 2023-04-04 stsp 		goto done;
 428 9afa3de2 2023-04-04 stsp 
 429 9afa3de2 2023-04-04 stsp 	if (obj_type != GOT_OBJ_TYPE_COMMIT) {
 430 9afa3de2 2023-04-04 stsp 		got_sha1_digest_to_str(expected_yca_id->sha1, hex, sizeof(hex));
 431 9afa3de2 2023-04-04 stsp 		err = got_error_fmt(GOT_ERR_OBJ_TYPE,
 432 9afa3de2 2023-04-04 stsp 		    "%s is not pointing at a commit object", hex);
 433 9afa3de2 2023-04-04 stsp 		goto done;
 434 9afa3de2 2023-04-04 stsp 	}
 435 9afa3de2 2023-04-04 stsp 
 436 9afa3de2 2023-04-04 stsp 	traversed_set = got_object_idset_alloc();
 437 9afa3de2 2023-04-04 stsp 	if (traversed_set == NULL) {
 438 9afa3de2 2023-04-04 stsp 		err = got_error_from_errno("got_object_idset_alloc");
 439 9afa3de2 2023-04-04 stsp 		goto done;
 440 9afa3de2 2023-04-04 stsp 	}
 441 9afa3de2 2023-04-04 stsp 
 442 9afa3de2 2023-04-04 stsp 	err = got_object_qid_alloc(&qid, tip_id);
 443 9afa3de2 2023-04-04 stsp 	if (err)
 444 9afa3de2 2023-04-04 stsp 		goto done;
 445 9afa3de2 2023-04-04 stsp 	STAILQ_INSERT_TAIL(&ids, qid, entry);
 446 9afa3de2 2023-04-04 stsp 	while (!STAILQ_EMPTY(&ids)) {
 447 9afa3de2 2023-04-04 stsp 		err = check_cancelled(NULL);
 448 9afa3de2 2023-04-04 stsp 		if (err)
 449 9afa3de2 2023-04-04 stsp 			break;
 450 9afa3de2 2023-04-04 stsp 
 451 9afa3de2 2023-04-04 stsp 		qid = STAILQ_FIRST(&ids);
 452 9afa3de2 2023-04-04 stsp 		if (got_object_id_cmp(&qid->id, expected_yca_id) == 0) {
 453 9afa3de2 2023-04-04 stsp 			found_yca = 1;
 454 9afa3de2 2023-04-04 stsp 			break;
 455 9afa3de2 2023-04-04 stsp 		}
 456 9afa3de2 2023-04-04 stsp 
 457 9afa3de2 2023-04-04 stsp 		if (got_object_idset_num_elements(traversed_set) >=
 458 9afa3de2 2023-04-04 stsp 		    max_commits_to_traverse)
 459 9afa3de2 2023-04-04 stsp 			break;
 460 9afa3de2 2023-04-04 stsp 
 461 9afa3de2 2023-04-04 stsp 		if (got_object_idset_contains(traversed_set, &qid->id)) {
 462 9afa3de2 2023-04-04 stsp 			STAILQ_REMOVE_HEAD(&ids, entry);
 463 9afa3de2 2023-04-04 stsp 			got_object_qid_free(qid);
 464 9afa3de2 2023-04-04 stsp 			qid = NULL;
 465 9afa3de2 2023-04-04 stsp 			continue;
 466 9afa3de2 2023-04-04 stsp 		}
 467 9afa3de2 2023-04-04 stsp 		err = got_object_idset_add(traversed_set, &qid->id, NULL);
 468 9afa3de2 2023-04-04 stsp 		if (err)
 469 9afa3de2 2023-04-04 stsp 			goto done;
 470 9afa3de2 2023-04-04 stsp 
 471 9afa3de2 2023-04-04 stsp 		err = got_object_open(&obj, repo_write.repo, &qid->id);
 472 9afa3de2 2023-04-04 stsp 		if (err && err->code != GOT_ERR_NO_OBJ)
 473 9afa3de2 2023-04-04 stsp 			goto done;
 474 9afa3de2 2023-04-04 stsp 		err = NULL;
 475 9afa3de2 2023-04-04 stsp 		if (obj) {
 476 9afa3de2 2023-04-04 stsp 			err = got_object_commit_open(&commit, repo_write.repo,
 477 9afa3de2 2023-04-04 stsp 			    obj);
 478 9afa3de2 2023-04-04 stsp 			if (err)
 479 9afa3de2 2023-04-04 stsp 				goto done;
 480 9afa3de2 2023-04-04 stsp 		} else {
 481 9afa3de2 2023-04-04 stsp 			int idx;
 482 9afa3de2 2023-04-04 stsp 
 483 9afa3de2 2023-04-04 stsp 			idx = got_packidx_get_object_idx(packidx, &qid->id);
 484 9afa3de2 2023-04-04 stsp 			if (idx == -1) {
 485 9afa3de2 2023-04-04 stsp 				got_sha1_digest_to_str(qid->id.sha1,
 486 9afa3de2 2023-04-04 stsp 				    hex, sizeof(hex));
 487 9afa3de2 2023-04-04 stsp 				err = got_error_fmt(GOT_ERR_BAD_PACKFILE,
 488 9afa3de2 2023-04-04 stsp 				    "object %s is missing from pack file", hex);
 489 9afa3de2 2023-04-04 stsp 				goto done;
 490 9afa3de2 2023-04-04 stsp 			}
 491 9afa3de2 2023-04-04 stsp 
 492 9afa3de2 2023-04-04 stsp 			err = got_object_open_from_packfile(&obj, &qid->id,
 493 9afa3de2 2023-04-04 stsp 				pack, packidx, idx, repo_write.repo);
 494 9afa3de2 2023-04-04 stsp 			if (err)
 495 9afa3de2 2023-04-04 stsp 				goto done;
 496 9afa3de2 2023-04-04 stsp 
 497 9afa3de2 2023-04-04 stsp 			if (obj->type != GOT_OBJ_TYPE_COMMIT) {
 498 9afa3de2 2023-04-04 stsp 				got_sha1_digest_to_str(qid->id.sha1,
 499 9afa3de2 2023-04-04 stsp 				    hex, sizeof(hex));
 500 9afa3de2 2023-04-04 stsp 				err = got_error_fmt(GOT_ERR_OBJ_TYPE,
 501 9afa3de2 2023-04-04 stsp 				    "%s is not pointing at a commit object",
 502 9afa3de2 2023-04-04 stsp 				    hex);
 503 9afa3de2 2023-04-04 stsp 				goto done;
 504 9afa3de2 2023-04-04 stsp 			}
 505 9afa3de2 2023-04-04 stsp 
 506 9afa3de2 2023-04-04 stsp 			err = got_packfile_extract_object_to_mem(&buf, &len,
 507 9afa3de2 2023-04-04 stsp 			    obj, pack);
 508 9afa3de2 2023-04-04 stsp 			if (err)
 509 9afa3de2 2023-04-04 stsp 				goto done;
 510 9afa3de2 2023-04-04 stsp 
 511 9afa3de2 2023-04-04 stsp 			err = got_object_parse_commit(&commit, buf, len);
 512 9afa3de2 2023-04-04 stsp 			if (err)
 513 9afa3de2 2023-04-04 stsp 				goto done;
 514 9afa3de2 2023-04-04 stsp 
 515 9afa3de2 2023-04-04 stsp 			free(buf);
 516 9afa3de2 2023-04-04 stsp 			buf = NULL;
 517 9afa3de2 2023-04-04 stsp 		}
 518 9afa3de2 2023-04-04 stsp 
 519 9afa3de2 2023-04-04 stsp 		got_object_close(obj);
 520 9afa3de2 2023-04-04 stsp 		obj = NULL;
 521 9afa3de2 2023-04-04 stsp 
 522 9afa3de2 2023-04-04 stsp 		STAILQ_REMOVE_HEAD(&ids, entry);
 523 9afa3de2 2023-04-04 stsp 		got_object_qid_free(qid);
 524 9afa3de2 2023-04-04 stsp 		qid = NULL;
 525 9afa3de2 2023-04-04 stsp 
 526 9afa3de2 2023-04-04 stsp 		if (got_object_commit_get_nparents(commit) == 0)
 527 9afa3de2 2023-04-04 stsp 			break;
 528 9afa3de2 2023-04-04 stsp 
 529 9afa3de2 2023-04-04 stsp 		parent_ids = got_object_commit_get_parent_ids(commit);
 530 9afa3de2 2023-04-04 stsp 		STAILQ_FOREACH(pid, parent_ids, entry) {
 531 9afa3de2 2023-04-04 stsp 			err = check_cancelled(NULL);
 532 9afa3de2 2023-04-04 stsp 			if (err)
 533 9afa3de2 2023-04-04 stsp 				goto done;
 534 9afa3de2 2023-04-04 stsp 			err = got_object_qid_alloc(&qid, &pid->id);
 535 9afa3de2 2023-04-04 stsp 			if (err)
 536 9afa3de2 2023-04-04 stsp 				goto done;
 537 9afa3de2 2023-04-04 stsp 			STAILQ_INSERT_TAIL(&ids, qid, entry);
 538 9afa3de2 2023-04-04 stsp 			qid = NULL;
 539 9afa3de2 2023-04-04 stsp 		}
 540 9afa3de2 2023-04-04 stsp 		got_object_commit_close(commit);
 541 9afa3de2 2023-04-04 stsp 		commit = NULL;
 542 9afa3de2 2023-04-04 stsp 	}
 543 9afa3de2 2023-04-04 stsp 
 544 9afa3de2 2023-04-04 stsp 	if (!found_yca) {
 545 9afa3de2 2023-04-04 stsp 		err = got_error_fmt(GOT_ERR_REF_PROTECTED, "%s",
 546 9afa3de2 2023-04-04 stsp 		    got_ref_get_name(ref));
 547 9afa3de2 2023-04-04 stsp 	}
 548 9afa3de2 2023-04-04 stsp done:
 549 9afa3de2 2023-04-04 stsp 	got_object_idset_free(traversed_set);
 550 9afa3de2 2023-04-04 stsp 	got_object_id_queue_free(&ids);
 551 9afa3de2 2023-04-04 stsp 	free(buf);
 552 9afa3de2 2023-04-04 stsp 	if (obj)
 553 9afa3de2 2023-04-04 stsp 		got_object_close(obj);
 554 9afa3de2 2023-04-04 stsp 	if (commit)
 555 9afa3de2 2023-04-04 stsp 		got_object_commit_close(commit);
 556 9afa3de2 2023-04-04 stsp 	free(expected_yca_id);
 557 9afa3de2 2023-04-04 stsp 	return err;
 558 9afa3de2 2023-04-04 stsp }
 559 9afa3de2 2023-04-04 stsp 
 560 9afa3de2 2023-04-04 stsp static const struct got_error *
 561 9afa3de2 2023-04-04 stsp protect_branch_namespace(const char *namespace, struct got_pack *pack,
 562 9afa3de2 2023-04-04 stsp     struct got_packidx *packidx, struct gotd_ref_update *ref_update)
 563 9afa3de2 2023-04-04 stsp {
 564 9afa3de2 2023-04-04 stsp 	const struct got_error *err;
 565 9afa3de2 2023-04-04 stsp 
 566 9afa3de2 2023-04-04 stsp 	err = validate_namespace(namespace);
 567 9afa3de2 2023-04-04 stsp 	if (err)
 568 9afa3de2 2023-04-04 stsp 		return err;
 569 9afa3de2 2023-04-04 stsp 
 570 9afa3de2 2023-04-04 stsp 	if (strncmp(namespace, got_ref_get_name(ref_update->ref),
 571 9afa3de2 2023-04-04 stsp 	    strlen(namespace)) != 0)
 572 9afa3de2 2023-04-04 stsp 		return NULL;
 573 9afa3de2 2023-04-04 stsp 
 574 9afa3de2 2023-04-04 stsp 	if (ref_update->ref_is_new) {
 575 9afa3de2 2023-04-04 stsp 		return verify_object_type(&ref_update->new_id,
 576 9afa3de2 2023-04-04 stsp 		    GOT_OBJ_TYPE_COMMIT, pack, packidx);
 577 9afa3de2 2023-04-04 stsp 	}
 578 9afa3de2 2023-04-04 stsp 
 579 9afa3de2 2023-04-04 stsp 	return protect_require_yca(&ref_update->new_id,
 580 9afa3de2 2023-04-04 stsp 	    be32toh(packidx->hdr.fanout_table[0xff]), pack, packidx,
 581 9afa3de2 2023-04-04 stsp 	    ref_update->ref);
 582 9afa3de2 2023-04-04 stsp }
 583 9afa3de2 2023-04-04 stsp 
 584 9afa3de2 2023-04-04 stsp static const struct got_error *
 585 9afa3de2 2023-04-04 stsp protect_branch(const char *refname, struct got_pack *pack,
 586 9afa3de2 2023-04-04 stsp     struct got_packidx *packidx, struct gotd_ref_update *ref_update)
 587 9afa3de2 2023-04-04 stsp {
 588 9afa3de2 2023-04-04 stsp 	if (strcmp(refname, got_ref_get_name(ref_update->ref)) != 0)
 589 9afa3de2 2023-04-04 stsp 		return NULL;
 590 9afa3de2 2023-04-04 stsp 
 591 9afa3de2 2023-04-04 stsp 	/* Always allow new branches to be created. */
 592 9afa3de2 2023-04-04 stsp 	if (ref_update->ref_is_new) {
 593 9afa3de2 2023-04-04 stsp 		return verify_object_type(&ref_update->new_id,
 594 9afa3de2 2023-04-04 stsp 		    GOT_OBJ_TYPE_COMMIT, pack, packidx);
 595 9afa3de2 2023-04-04 stsp 	}
 596 9afa3de2 2023-04-04 stsp 
 597 9afa3de2 2023-04-04 stsp 	return protect_require_yca(&ref_update->new_id,
 598 9afa3de2 2023-04-04 stsp 	    be32toh(packidx->hdr.fanout_table[0xff]), pack, packidx,
 599 9afa3de2 2023-04-04 stsp 	    ref_update->ref);
 600 9afa3de2 2023-04-04 stsp }
 601 9afa3de2 2023-04-04 stsp 
 602 9afa3de2 2023-04-04 stsp static const struct got_error *
 603 1a52c9bf 2022-12-30 stsp recv_ref_update(struct imsg *imsg)
 604 13b2bc37 2022-10-23 stsp {
 605 9a8e357c 2023-01-28 op 	static const char zero_id[SHA1_DIGEST_LENGTH];
 606 13b2bc37 2022-10-23 stsp 	const struct got_error *err = NULL;
 607 1a52c9bf 2022-12-30 stsp 	struct repo_write_client *client = &repo_write_client;
 608 13b2bc37 2022-10-23 stsp 	struct gotd_imsg_ref_update iref;
 609 13b2bc37 2022-10-23 stsp 	size_t datalen;
 610 13b2bc37 2022-10-23 stsp 	char *refname = NULL;
 611 13b2bc37 2022-10-23 stsp 	struct got_reference *ref = NULL;
 612 13b2bc37 2022-10-23 stsp 	struct got_object_id *id = NULL;
 613 13b2bc37 2022-10-23 stsp 	struct imsgbuf ibuf;
 614 13b2bc37 2022-10-23 stsp 	struct gotd_ref_update *ref_update = NULL;
 615 13b2bc37 2022-10-23 stsp 
 616 13b2bc37 2022-10-23 stsp 	log_debug("ref-update received");
 617 13b2bc37 2022-10-23 stsp 
 618 13b2bc37 2022-10-23 stsp 	datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
 619 13b2bc37 2022-10-23 stsp 	if (datalen < sizeof(iref))
 620 13b2bc37 2022-10-23 stsp 		return got_error(GOT_ERR_PRIVSEP_LEN);
 621 13b2bc37 2022-10-23 stsp 	memcpy(&iref, imsg->data, sizeof(iref));
 622 13b2bc37 2022-10-23 stsp 	if (datalen != sizeof(iref) + iref.name_len)
 623 13b2bc37 2022-10-23 stsp 		return got_error(GOT_ERR_PRIVSEP_LEN);
 624 13b2bc37 2022-10-23 stsp 
 625 1a52c9bf 2022-12-30 stsp 	imsg_init(&ibuf, client->fd);
 626 13b2bc37 2022-10-23 stsp 
 627 00b3e9ae 2023-01-11 op 	refname = strndup(imsg->data + sizeof(iref), iref.name_len);
 628 13b2bc37 2022-10-23 stsp 	if (refname == NULL)
 629 00b3e9ae 2023-01-11 op 		return got_error_from_errno("strndup");
 630 13b2bc37 2022-10-23 stsp 
 631 13b2bc37 2022-10-23 stsp 	ref_update = calloc(1, sizeof(*ref_update));
 632 13b2bc37 2022-10-23 stsp 	if (ref_update == NULL) {
 633 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("malloc");
 634 13b2bc37 2022-10-23 stsp 		goto done;
 635 13b2bc37 2022-10-23 stsp 	}
 636 13b2bc37 2022-10-23 stsp 
 637 13b2bc37 2022-10-23 stsp 	memcpy(ref_update->old_id.sha1, iref.old_id, SHA1_DIGEST_LENGTH);
 638 13b2bc37 2022-10-23 stsp 	memcpy(ref_update->new_id.sha1, iref.new_id, SHA1_DIGEST_LENGTH);
 639 13b2bc37 2022-10-23 stsp 
 640 13b2bc37 2022-10-23 stsp 	err = got_ref_open(&ref, repo_write.repo, refname, 0);
 641 13b2bc37 2022-10-23 stsp 	if (err) {
 642 13b2bc37 2022-10-23 stsp 		if (err->code != GOT_ERR_NOT_REF)
 643 13b2bc37 2022-10-23 stsp 			goto done;
 644 9afa3de2 2023-04-04 stsp 		if (memcmp(ref_update->new_id.sha1,
 645 9afa3de2 2023-04-04 stsp 		    zero_id, sizeof(zero_id)) == 0) {
 646 9afa3de2 2023-04-04 stsp 			err = got_error_fmt(GOT_ERR_BAD_OBJ_ID,
 647 9afa3de2 2023-04-04 stsp 			    "%s", refname);
 648 9afa3de2 2023-04-04 stsp 			goto done;
 649 9afa3de2 2023-04-04 stsp 		}
 650 13b2bc37 2022-10-23 stsp 		err = got_ref_alloc(&ref, refname, &ref_update->new_id);
 651 13b2bc37 2022-10-23 stsp 		if (err)
 652 13b2bc37 2022-10-23 stsp 			goto done;
 653 13b2bc37 2022-10-23 stsp 		ref_update->ref_is_new = 1;
 654 0ff2c315 2023-01-18 stsp 		client->nref_new++;
 655 13b2bc37 2022-10-23 stsp 	}
 656 13b2bc37 2022-10-23 stsp 	if (got_ref_is_symbolic(ref)) {
 657 13b2bc37 2022-10-23 stsp 		err = got_error_fmt(GOT_ERR_BAD_REF_TYPE,
 658 13b2bc37 2022-10-23 stsp 		    "'%s' is a symbolic reference and cannot "
 659 13b2bc37 2022-10-23 stsp 		    "be updated", got_ref_get_name(ref));
 660 13b2bc37 2022-10-23 stsp 		goto done;
 661 13b2bc37 2022-10-23 stsp 	}
 662 13b2bc37 2022-10-23 stsp 	if (strncmp("refs/", got_ref_get_name(ref), 5) != 0) {
 663 13b2bc37 2022-10-23 stsp 		err = got_error_fmt(GOT_ERR_BAD_REF_NAME,
 664 13b2bc37 2022-10-23 stsp 		    "%s: does not begin with 'refs/'",
 665 13b2bc37 2022-10-23 stsp 		    got_ref_get_name(ref));
 666 13b2bc37 2022-10-23 stsp 		goto done;
 667 13b2bc37 2022-10-23 stsp 	}
 668 13b2bc37 2022-10-23 stsp 
 669 9afa3de2 2023-04-04 stsp 	err = protect_ref_namespace(got_ref_get_name(ref), "refs/got/");
 670 13b2bc37 2022-10-23 stsp 	if (err)
 671 13b2bc37 2022-10-23 stsp 		goto done;
 672 9afa3de2 2023-04-04 stsp 	err = protect_ref_namespace(got_ref_get_name(ref), "refs/remotes/");
 673 13b2bc37 2022-10-23 stsp 	if (err)
 674 13b2bc37 2022-10-23 stsp 		goto done;
 675 13b2bc37 2022-10-23 stsp 
 676 13b2bc37 2022-10-23 stsp 	if (!ref_update->ref_is_new) {
 677 13b2bc37 2022-10-23 stsp 		/*
 678 13b2bc37 2022-10-23 stsp 		 * Ensure the client's idea of this update is still valid.
 679 13b2bc37 2022-10-23 stsp 		 * At this point we can only return an error, to prevent
 680 13b2bc37 2022-10-23 stsp 		 * the client from uploading a pack file which will likely
 681 13b2bc37 2022-10-23 stsp 		 * have to be discarded.
 682 13b2bc37 2022-10-23 stsp 		 */
 683 13b2bc37 2022-10-23 stsp 		err = got_ref_resolve(&id, repo_write.repo, ref);
 684 13b2bc37 2022-10-23 stsp 		if (err)
 685 13b2bc37 2022-10-23 stsp 			goto done;
 686 13b2bc37 2022-10-23 stsp 
 687 13b2bc37 2022-10-23 stsp 		if (got_object_id_cmp(id, &ref_update->old_id) != 0) {
 688 13b2bc37 2022-10-23 stsp 			err = got_error_fmt(GOT_ERR_REF_BUSY,
 689 13b2bc37 2022-10-23 stsp 			    "%s has been modified by someone else "
 690 13b2bc37 2022-10-23 stsp 			    "while transaction was in progress",
 691 13b2bc37 2022-10-23 stsp 			    got_ref_get_name(ref));
 692 13b2bc37 2022-10-23 stsp 			goto done;
 693 13b2bc37 2022-10-23 stsp 		}
 694 13b2bc37 2022-10-23 stsp 	}
 695 13b2bc37 2022-10-23 stsp 
 696 13b2bc37 2022-10-23 stsp 	gotd_imsg_send_ack(&ref_update->new_id, &ibuf, PROC_REPO_WRITE,
 697 13b2bc37 2022-10-23 stsp 	    repo_write.pid);
 698 13b2bc37 2022-10-23 stsp 
 699 13b2bc37 2022-10-23 stsp 	ref_update->ref = ref;
 700 9a8e357c 2023-01-28 op 	if (memcmp(ref_update->new_id.sha1, zero_id, sizeof(zero_id)) == 0) {
 701 9a8e357c 2023-01-28 op 		ref_update->delete_ref = 1;
 702 9a8e357c 2023-01-28 op 		client->nref_del++;
 703 9a8e357c 2023-01-28 op 	}
 704 1a52c9bf 2022-12-30 stsp 	STAILQ_INSERT_HEAD(&client->ref_updates, ref_update, entry);
 705 1a52c9bf 2022-12-30 stsp 	client->nref_updates++;
 706 13b2bc37 2022-10-23 stsp 	ref = NULL;
 707 13b2bc37 2022-10-23 stsp 	ref_update = NULL;
 708 13b2bc37 2022-10-23 stsp done:
 709 13b2bc37 2022-10-23 stsp 	if (ref)
 710 13b2bc37 2022-10-23 stsp 		got_ref_close(ref);
 711 13b2bc37 2022-10-23 stsp 	free(ref_update);
 712 13b2bc37 2022-10-23 stsp 	free(refname);
 713 13b2bc37 2022-10-23 stsp 	free(id);
 714 13b2bc37 2022-10-23 stsp 	return err;
 715 13b2bc37 2022-10-23 stsp }
 716 13b2bc37 2022-10-23 stsp 
 717 13b2bc37 2022-10-23 stsp static const struct got_error *
 718 13b2bc37 2022-10-23 stsp pack_index_progress(void *arg, uint32_t nobj_total, uint32_t nobj_indexed,
 719 13b2bc37 2022-10-23 stsp     uint32_t nobj_loose, uint32_t nobj_resolved)
 720 13b2bc37 2022-10-23 stsp {
 721 13b2bc37 2022-10-23 stsp 	int p_indexed = 0, p_resolved = 0;
 722 13b2bc37 2022-10-23 stsp 	int nobj_delta = nobj_total - nobj_loose;
 723 13b2bc37 2022-10-23 stsp 
 724 13b2bc37 2022-10-23 stsp 	if (nobj_total > 0)
 725 13b2bc37 2022-10-23 stsp 		p_indexed = (nobj_indexed * 100) / nobj_total;
 726 13b2bc37 2022-10-23 stsp 
 727 13b2bc37 2022-10-23 stsp 	if (nobj_delta > 0)
 728 13b2bc37 2022-10-23 stsp 		p_resolved = (nobj_resolved * 100) / nobj_delta;
 729 13b2bc37 2022-10-23 stsp 
 730 13b2bc37 2022-10-23 stsp 	if (p_resolved > 0) {
 731 13b2bc37 2022-10-23 stsp 		log_debug("indexing %d objects %d%%; resolving %d deltas %d%%",
 732 13b2bc37 2022-10-23 stsp 		    nobj_total, p_indexed, nobj_delta, p_resolved);
 733 13b2bc37 2022-10-23 stsp 	} else
 734 13b2bc37 2022-10-23 stsp 		log_debug("indexing %d objects %d%%", nobj_total, p_indexed);
 735 13b2bc37 2022-10-23 stsp 
 736 13b2bc37 2022-10-23 stsp 	return NULL;
 737 13b2bc37 2022-10-23 stsp }
 738 13b2bc37 2022-10-23 stsp 
 739 13b2bc37 2022-10-23 stsp static const struct got_error *
 740 13b2bc37 2022-10-23 stsp read_more_pack_stream(int infd, BUF *buf, size_t minsize)
 741 13b2bc37 2022-10-23 stsp {
 742 13b2bc37 2022-10-23 stsp 	const struct got_error *err = NULL;
 743 13b2bc37 2022-10-23 stsp 	uint8_t readahead[65536];
 744 13b2bc37 2022-10-23 stsp 	size_t have, newlen;
 745 13b2bc37 2022-10-23 stsp 
 746 13b2bc37 2022-10-23 stsp 	err = got_poll_read_full(infd, &have,
 747 13b2bc37 2022-10-23 stsp 	    readahead, sizeof(readahead), minsize);
 748 13b2bc37 2022-10-23 stsp 	if (err)
 749 13b2bc37 2022-10-23 stsp 		return err;
 750 13b2bc37 2022-10-23 stsp 
 751 13b2bc37 2022-10-23 stsp 	err = buf_append(&newlen, buf, readahead, have);
 752 13b2bc37 2022-10-23 stsp 	if (err)
 753 13b2bc37 2022-10-23 stsp 		return err;
 754 e26970cc 2023-01-10 op 	return NULL;
 755 13b2bc37 2022-10-23 stsp }
 756 13b2bc37 2022-10-23 stsp 
 757 13b2bc37 2022-10-23 stsp static const struct got_error *
 758 13b2bc37 2022-10-23 stsp copy_object_type_and_size(uint8_t *type, uint64_t *size, int infd, int outfd,
 759 ae25a666 2023-02-23 op     off_t *outsize, BUF *buf, size_t *buf_pos, struct got_hash *ctx)
 760 13b2bc37 2022-10-23 stsp {
 761 13b2bc37 2022-10-23 stsp 	const struct got_error *err = NULL;
 762 13b2bc37 2022-10-23 stsp 	uint8_t t = 0;
 763 13b2bc37 2022-10-23 stsp 	uint64_t s = 0;
 764 13b2bc37 2022-10-23 stsp 	uint8_t sizebuf[8];
 765 13b2bc37 2022-10-23 stsp 	size_t i = 0;
 766 13b2bc37 2022-10-23 stsp 	off_t obj_offset = *outsize;
 767 13b2bc37 2022-10-23 stsp 
 768 13b2bc37 2022-10-23 stsp 	do {
 769 13b2bc37 2022-10-23 stsp 		/* We do not support size values which don't fit in 64 bit. */
 770 13b2bc37 2022-10-23 stsp 		if (i > 9)
 771 13b2bc37 2022-10-23 stsp 			return got_error_fmt(GOT_ERR_OBJ_TOO_LARGE,
 772 22ec3416 2022-10-25 op 			    "packfile offset %lld", (long long)obj_offset);
 773 13b2bc37 2022-10-23 stsp 
 774 13b2bc37 2022-10-23 stsp 		if (buf_len(buf) - *buf_pos < sizeof(sizebuf[0])) {
 775 13b2bc37 2022-10-23 stsp 			err = read_more_pack_stream(infd, buf,
 776 13b2bc37 2022-10-23 stsp 			    sizeof(sizebuf[0]));
 777 13b2bc37 2022-10-23 stsp 			if (err)
 778 13b2bc37 2022-10-23 stsp 				return err;
 779 13b2bc37 2022-10-23 stsp 		}
 780 13b2bc37 2022-10-23 stsp 
 781 13b2bc37 2022-10-23 stsp 		sizebuf[i] = buf_getc(buf, *buf_pos);
 782 13b2bc37 2022-10-23 stsp 		*buf_pos += sizeof(sizebuf[i]);
 783 13b2bc37 2022-10-23 stsp 
 784 13b2bc37 2022-10-23 stsp 		if (i == 0) {
 785 13b2bc37 2022-10-23 stsp 			t = (sizebuf[i] & GOT_PACK_OBJ_SIZE0_TYPE_MASK) >>
 786 13b2bc37 2022-10-23 stsp 			    GOT_PACK_OBJ_SIZE0_TYPE_MASK_SHIFT;
 787 13b2bc37 2022-10-23 stsp 			s = (sizebuf[i] & GOT_PACK_OBJ_SIZE0_VAL_MASK);
 788 13b2bc37 2022-10-23 stsp 		} else {
 789 13b2bc37 2022-10-23 stsp 			size_t shift = 4 + 7 * (i - 1);
 790 13b2bc37 2022-10-23 stsp 			s |= ((sizebuf[i] & GOT_PACK_OBJ_SIZE_VAL_MASK) <<
 791 13b2bc37 2022-10-23 stsp 			    shift);
 792 13b2bc37 2022-10-23 stsp 		}
 793 13b2bc37 2022-10-23 stsp 		i++;
 794 13b2bc37 2022-10-23 stsp 	} while (sizebuf[i - 1] & GOT_PACK_OBJ_SIZE_MORE);
 795 13b2bc37 2022-10-23 stsp 
 796 13b2bc37 2022-10-23 stsp 	err = got_pack_hwrite(outfd, sizebuf, i, ctx);
 797 13b2bc37 2022-10-23 stsp 	if (err)
 798 13b2bc37 2022-10-23 stsp 		return err;
 799 13b2bc37 2022-10-23 stsp 	*outsize += i;
 800 13b2bc37 2022-10-23 stsp 
 801 13b2bc37 2022-10-23 stsp 	*type = t;
 802 13b2bc37 2022-10-23 stsp 	*size = s;
 803 13b2bc37 2022-10-23 stsp 	return NULL;
 804 13b2bc37 2022-10-23 stsp }
 805 13b2bc37 2022-10-23 stsp 
 806 13b2bc37 2022-10-23 stsp static const struct got_error *
 807 13b2bc37 2022-10-23 stsp copy_ref_delta(int infd, int outfd, off_t *outsize, BUF *buf, size_t *buf_pos,
 808 ae25a666 2023-02-23 op     struct got_hash *ctx)
 809 13b2bc37 2022-10-23 stsp {
 810 13b2bc37 2022-10-23 stsp 	const struct got_error *err = NULL;
 811 13b2bc37 2022-10-23 stsp 	size_t remain = buf_len(buf) - *buf_pos;
 812 13b2bc37 2022-10-23 stsp 
 813 13b2bc37 2022-10-23 stsp 	if (remain < SHA1_DIGEST_LENGTH) {
 814 13b2bc37 2022-10-23 stsp 		err = read_more_pack_stream(infd, buf,
 815 13b2bc37 2022-10-23 stsp 		    SHA1_DIGEST_LENGTH - remain);
 816 13b2bc37 2022-10-23 stsp 		if (err)
 817 13b2bc37 2022-10-23 stsp 			return err;
 818 13b2bc37 2022-10-23 stsp 	}
 819 13b2bc37 2022-10-23 stsp 
 820 13b2bc37 2022-10-23 stsp 	err = got_pack_hwrite(outfd, buf_get(buf) + *buf_pos,
 821 13b2bc37 2022-10-23 stsp 	    SHA1_DIGEST_LENGTH, ctx);
 822 13b2bc37 2022-10-23 stsp 	if (err)
 823 13b2bc37 2022-10-23 stsp 		return err;
 824 13b2bc37 2022-10-23 stsp 
 825 13b2bc37 2022-10-23 stsp 	*buf_pos += SHA1_DIGEST_LENGTH;
 826 13b2bc37 2022-10-23 stsp 	return NULL;
 827 13b2bc37 2022-10-23 stsp }
 828 13b2bc37 2022-10-23 stsp 
 829 13b2bc37 2022-10-23 stsp static const struct got_error *
 830 13b2bc37 2022-10-23 stsp copy_offset_delta(int infd, int outfd, off_t *outsize, BUF *buf, size_t *buf_pos,
 831 ae25a666 2023-02-23 op     struct got_hash *ctx)
 832 13b2bc37 2022-10-23 stsp {
 833 13b2bc37 2022-10-23 stsp 	const struct got_error *err = NULL;
 834 13b2bc37 2022-10-23 stsp 	uint64_t o = 0;
 835 13b2bc37 2022-10-23 stsp 	uint8_t offbuf[8];
 836 13b2bc37 2022-10-23 stsp 	size_t i = 0;
 837 13b2bc37 2022-10-23 stsp 	off_t obj_offset = *outsize;
 838 13b2bc37 2022-10-23 stsp 
 839 13b2bc37 2022-10-23 stsp 	do {
 840 13b2bc37 2022-10-23 stsp 		/* We do not support offset values which don't fit in 64 bit. */
 841 13b2bc37 2022-10-23 stsp 		if (i > 8)
 842 13b2bc37 2022-10-23 stsp 			return got_error_fmt(GOT_ERR_OBJ_TOO_LARGE,
 843 22ec3416 2022-10-25 op 			    "packfile offset %lld", (long long)obj_offset);
 844 13b2bc37 2022-10-23 stsp 
 845 13b2bc37 2022-10-23 stsp 		if (buf_len(buf) - *buf_pos < sizeof(offbuf[0])) {
 846 13b2bc37 2022-10-23 stsp 			err = read_more_pack_stream(infd, buf,
 847 13b2bc37 2022-10-23 stsp 			    sizeof(offbuf[0]));
 848 13b2bc37 2022-10-23 stsp 			if (err)
 849 13b2bc37 2022-10-23 stsp 				return err;
 850 13b2bc37 2022-10-23 stsp 		}
 851 13b2bc37 2022-10-23 stsp 
 852 13b2bc37 2022-10-23 stsp 		offbuf[i] = buf_getc(buf, *buf_pos);
 853 13b2bc37 2022-10-23 stsp 		*buf_pos += sizeof(offbuf[i]);
 854 13b2bc37 2022-10-23 stsp 
 855 13b2bc37 2022-10-23 stsp 		if (i == 0)
 856 13b2bc37 2022-10-23 stsp 			o = (offbuf[i] & GOT_PACK_OBJ_DELTA_OFF_VAL_MASK);
 857 13b2bc37 2022-10-23 stsp 		else {
 858 13b2bc37 2022-10-23 stsp 			o++;
 859 13b2bc37 2022-10-23 stsp 			o <<= 7;
 860 13b2bc37 2022-10-23 stsp 			o += (offbuf[i] & GOT_PACK_OBJ_DELTA_OFF_VAL_MASK);
 861 13b2bc37 2022-10-23 stsp 		}
 862 13b2bc37 2022-10-23 stsp 		i++;
 863 13b2bc37 2022-10-23 stsp 	} while (offbuf[i - 1] & GOT_PACK_OBJ_DELTA_OFF_MORE);
 864 13b2bc37 2022-10-23 stsp 
 865 13b2bc37 2022-10-23 stsp 	if (o < sizeof(struct got_packfile_hdr) || o > *outsize)
 866 13b2bc37 2022-10-23 stsp 		return got_error(GOT_ERR_PACK_OFFSET);
 867 13b2bc37 2022-10-23 stsp 
 868 13b2bc37 2022-10-23 stsp 	err = got_pack_hwrite(outfd, offbuf, i, ctx);
 869 13b2bc37 2022-10-23 stsp 	if (err)
 870 13b2bc37 2022-10-23 stsp 		return err;
 871 13b2bc37 2022-10-23 stsp 
 872 13b2bc37 2022-10-23 stsp 	*outsize += i;
 873 13b2bc37 2022-10-23 stsp 	return NULL;
 874 13b2bc37 2022-10-23 stsp }
 875 13b2bc37 2022-10-23 stsp 
 876 13b2bc37 2022-10-23 stsp static const struct got_error *
 877 13b2bc37 2022-10-23 stsp copy_zstream(int infd, int outfd, off_t *outsize, BUF *buf, size_t *buf_pos,
 878 ae25a666 2023-02-23 op     struct got_hash *ctx)
 879 13b2bc37 2022-10-23 stsp {
 880 13b2bc37 2022-10-23 stsp 	const struct got_error *err = NULL;
 881 13b2bc37 2022-10-23 stsp 	z_stream z;
 882 13b2bc37 2022-10-23 stsp 	int zret;
 883 13b2bc37 2022-10-23 stsp 	char voidbuf[1024];
 884 13b2bc37 2022-10-23 stsp 	size_t consumed_total = 0;
 885 13b2bc37 2022-10-23 stsp 	off_t zstream_offset = *outsize;
 886 13b2bc37 2022-10-23 stsp 
 887 13b2bc37 2022-10-23 stsp 	memset(&z, 0, sizeof(z));
 888 13b2bc37 2022-10-23 stsp 
 889 13b2bc37 2022-10-23 stsp 	z.zalloc = Z_NULL;
 890 13b2bc37 2022-10-23 stsp 	z.zfree = Z_NULL;
 891 13b2bc37 2022-10-23 stsp 	zret = inflateInit(&z);
 892 13b2bc37 2022-10-23 stsp 	if (zret != Z_OK) {
 893 13b2bc37 2022-10-23 stsp 		if  (zret == Z_ERRNO)
 894 13b2bc37 2022-10-23 stsp 			return got_error_from_errno("inflateInit");
 895 13b2bc37 2022-10-23 stsp 		if  (zret == Z_MEM_ERROR) {
 896 13b2bc37 2022-10-23 stsp 			errno = ENOMEM;
 897 13b2bc37 2022-10-23 stsp 			return got_error_from_errno("inflateInit");
 898 13b2bc37 2022-10-23 stsp 		}
 899 13b2bc37 2022-10-23 stsp 		return got_error_msg(GOT_ERR_DECOMPRESSION,
 900 13b2bc37 2022-10-23 stsp 		    "inflateInit failed");
 901 13b2bc37 2022-10-23 stsp 	}
 902 13b2bc37 2022-10-23 stsp 
 903 13b2bc37 2022-10-23 stsp 	while (zret != Z_STREAM_END) {
 904 13b2bc37 2022-10-23 stsp 		size_t last_total_in, consumed;
 905 13b2bc37 2022-10-23 stsp 
 906 13b2bc37 2022-10-23 stsp 		/*
 907 13b2bc37 2022-10-23 stsp 		 * Decompress into the void. Object data will be parsed
 908 13b2bc37 2022-10-23 stsp 		 * later, when the pack file is indexed. For now, we just
 909 13b2bc37 2022-10-23 stsp 		 * want to locate the end of the compressed stream.
 910 13b2bc37 2022-10-23 stsp 		 */
 911 13b2bc37 2022-10-23 stsp 		while (zret != Z_STREAM_END && buf_len(buf) - *buf_pos > 0) {
 912 13b2bc37 2022-10-23 stsp 			last_total_in = z.total_in;
 913 13b2bc37 2022-10-23 stsp 			z.next_in = buf_get(buf) + *buf_pos;
 914 13b2bc37 2022-10-23 stsp 			z.avail_in = buf_len(buf) - *buf_pos;
 915 13b2bc37 2022-10-23 stsp 			z.next_out = voidbuf;
 916 13b2bc37 2022-10-23 stsp 			z.avail_out = sizeof(voidbuf);
 917 13b2bc37 2022-10-23 stsp 
 918 13b2bc37 2022-10-23 stsp 			zret = inflate(&z, Z_SYNC_FLUSH);
 919 13b2bc37 2022-10-23 stsp 			if (zret != Z_OK && zret != Z_BUF_ERROR &&
 920 13b2bc37 2022-10-23 stsp 			    zret != Z_STREAM_END) {
 921 13b2bc37 2022-10-23 stsp 				err = got_error_fmt(GOT_ERR_DECOMPRESSION,
 922 22ec3416 2022-10-25 op 				    "packfile offset %lld",
 923 22ec3416 2022-10-25 op 				    (long long)zstream_offset);
 924 13b2bc37 2022-10-23 stsp 				goto done;
 925 13b2bc37 2022-10-23 stsp 			}
 926 13b2bc37 2022-10-23 stsp 			consumed = z.total_in - last_total_in;
 927 13b2bc37 2022-10-23 stsp 
 928 13b2bc37 2022-10-23 stsp 			err = got_pack_hwrite(outfd, buf_get(buf) + *buf_pos,
 929 13b2bc37 2022-10-23 stsp 			    consumed, ctx);
 930 13b2bc37 2022-10-23 stsp 			if (err)
 931 13b2bc37 2022-10-23 stsp 				goto done;
 932 13b2bc37 2022-10-23 stsp 
 933 13b2bc37 2022-10-23 stsp 			err = buf_discard(buf, *buf_pos + consumed);
 934 13b2bc37 2022-10-23 stsp 			if (err)
 935 13b2bc37 2022-10-23 stsp 				goto done;
 936 13b2bc37 2022-10-23 stsp 			*buf_pos = 0;
 937 13b2bc37 2022-10-23 stsp 
 938 13b2bc37 2022-10-23 stsp 			consumed_total += consumed;
 939 13b2bc37 2022-10-23 stsp 		}
 940 13b2bc37 2022-10-23 stsp 
 941 13b2bc37 2022-10-23 stsp 		if (zret != Z_STREAM_END) {
 942 13b2bc37 2022-10-23 stsp 			err = read_more_pack_stream(infd, buf, 1);
 943 13b2bc37 2022-10-23 stsp 			if (err)
 944 13b2bc37 2022-10-23 stsp 				goto done;
 945 13b2bc37 2022-10-23 stsp 		}
 946 13b2bc37 2022-10-23 stsp 	}
 947 13b2bc37 2022-10-23 stsp 
 948 13b2bc37 2022-10-23 stsp 	if (err == NULL)
 949 13b2bc37 2022-10-23 stsp 		*outsize += consumed_total;
 950 13b2bc37 2022-10-23 stsp done:
 951 13b2bc37 2022-10-23 stsp 	inflateEnd(&z);
 952 13b2bc37 2022-10-23 stsp 	return err;
 953 13b2bc37 2022-10-23 stsp }
 954 13b2bc37 2022-10-23 stsp 
 955 13b2bc37 2022-10-23 stsp static const struct got_error *
 956 13b2bc37 2022-10-23 stsp validate_object_type(int obj_type)
 957 13b2bc37 2022-10-23 stsp {
 958 13b2bc37 2022-10-23 stsp 	switch (obj_type) {
 959 13b2bc37 2022-10-23 stsp 	case GOT_OBJ_TYPE_BLOB:
 960 13b2bc37 2022-10-23 stsp 	case GOT_OBJ_TYPE_COMMIT:
 961 13b2bc37 2022-10-23 stsp 	case GOT_OBJ_TYPE_TREE:
 962 13b2bc37 2022-10-23 stsp 	case GOT_OBJ_TYPE_TAG:
 963 13b2bc37 2022-10-23 stsp 	case GOT_OBJ_TYPE_REF_DELTA:
 964 13b2bc37 2022-10-23 stsp 	case GOT_OBJ_TYPE_OFFSET_DELTA:
 965 13b2bc37 2022-10-23 stsp 		return NULL;
 966 13b2bc37 2022-10-23 stsp 	default:
 967 13b2bc37 2022-10-23 stsp 		break;
 968 13b2bc37 2022-10-23 stsp 	}
 969 13b2bc37 2022-10-23 stsp 
 970 13b2bc37 2022-10-23 stsp 	return got_error(GOT_ERR_OBJ_TYPE);
 971 13b2bc37 2022-10-23 stsp }
 972 13b2bc37 2022-10-23 stsp 
 973 13b2bc37 2022-10-23 stsp static const struct got_error *
 974 0ff2c315 2023-01-18 stsp recv_packdata(off_t *outsize, uint32_t *nobj, uint8_t *sha1,
 975 0ff2c315 2023-01-18 stsp     int infd, int outfd)
 976 13b2bc37 2022-10-23 stsp {
 977 13b2bc37 2022-10-23 stsp 	const struct got_error *err;
 978 0ff2c315 2023-01-18 stsp 	struct repo_write_client *client = &repo_write_client;
 979 13b2bc37 2022-10-23 stsp 	struct got_packfile_hdr hdr;
 980 13b2bc37 2022-10-23 stsp 	size_t have;
 981 0ff2c315 2023-01-18 stsp 	uint32_t nhave = 0;
 982 ae25a666 2023-02-23 op 	struct got_hash ctx;
 983 13b2bc37 2022-10-23 stsp 	uint8_t expected_sha1[SHA1_DIGEST_LENGTH];
 984 13b2bc37 2022-10-23 stsp 	char hex[SHA1_DIGEST_STRING_LENGTH];
 985 13b2bc37 2022-10-23 stsp 	BUF *buf = NULL;
 986 13b2bc37 2022-10-23 stsp 	size_t buf_pos = 0, remain;
 987 13b2bc37 2022-10-23 stsp 	ssize_t w;
 988 13b2bc37 2022-10-23 stsp 
 989 13b2bc37 2022-10-23 stsp 	*outsize = 0;
 990 0ff2c315 2023-01-18 stsp 	*nobj = 0;
 991 9a8e357c 2023-01-28 op 
 992 9a8e357c 2023-01-28 op 	/* if only deleting references there's nothing to read */
 993 9a8e357c 2023-01-28 op 	if (client->nref_updates == client->nref_del)
 994 9a8e357c 2023-01-28 op 		return NULL;
 995 9a8e357c 2023-01-28 op 
 996 ae25a666 2023-02-23 op 	got_hash_init(&ctx, GOT_HASH_SHA1);
 997 13b2bc37 2022-10-23 stsp 
 998 13b2bc37 2022-10-23 stsp 	err = got_poll_read_full(infd, &have, &hdr, sizeof(hdr), sizeof(hdr));
 999 13b2bc37 2022-10-23 stsp 	if (err)
1000 13b2bc37 2022-10-23 stsp 		return err;
1001 13b2bc37 2022-10-23 stsp 	if (have != sizeof(hdr))
1002 13b2bc37 2022-10-23 stsp 		return got_error_msg(GOT_ERR_BAD_PACKFILE, "short pack file");
1003 13b2bc37 2022-10-23 stsp 	*outsize += have;
1004 13b2bc37 2022-10-23 stsp 
1005 13b2bc37 2022-10-23 stsp 	if (hdr.signature != htobe32(GOT_PACKFILE_SIGNATURE))
1006 13b2bc37 2022-10-23 stsp 		return got_error_msg(GOT_ERR_BAD_PACKFILE,
1007 13b2bc37 2022-10-23 stsp 		    "bad packfile signature");
1008 13b2bc37 2022-10-23 stsp 	if (hdr.version != htobe32(GOT_PACKFILE_VERSION))
1009 13b2bc37 2022-10-23 stsp 		return got_error_msg(GOT_ERR_BAD_PACKFILE,
1010 13b2bc37 2022-10-23 stsp 		    "bad packfile version");
1011 13b2bc37 2022-10-23 stsp 
1012 0ff2c315 2023-01-18 stsp 	*nobj = be32toh(hdr.nobjects);
1013 0ff2c315 2023-01-18 stsp 	if (*nobj == 0) {
1014 0ff2c315 2023-01-18 stsp 		/*
1015 0ff2c315 2023-01-18 stsp 		 * Clients which are creating new references only
1016 0ff2c315 2023-01-18 stsp 		 * will send us an empty pack file.
1017 0ff2c315 2023-01-18 stsp 		 */
1018 0ff2c315 2023-01-18 stsp 		if (client->nref_updates > 0 &&
1019 0ff2c315 2023-01-18 stsp 		    client->nref_updates == client->nref_new)
1020 0ff2c315 2023-01-18 stsp 			return NULL;
1021 0ff2c315 2023-01-18 stsp 
1022 13b2bc37 2022-10-23 stsp 		return got_error_msg(GOT_ERR_BAD_PACKFILE,
1023 13b2bc37 2022-10-23 stsp 		    "bad packfile with zero objects");
1024 0ff2c315 2023-01-18 stsp 	}
1025 13b2bc37 2022-10-23 stsp 
1026 0ff2c315 2023-01-18 stsp 	log_debug("expecting %d objects", *nobj);
1027 13b2bc37 2022-10-23 stsp 
1028 13b2bc37 2022-10-23 stsp 	err = got_pack_hwrite(outfd, &hdr, sizeof(hdr), &ctx);
1029 13b2bc37 2022-10-23 stsp 	if (err)
1030 13b2bc37 2022-10-23 stsp 		return err;
1031 13b2bc37 2022-10-23 stsp 
1032 13b2bc37 2022-10-23 stsp 	err = buf_alloc(&buf, 65536);
1033 13b2bc37 2022-10-23 stsp 	if (err)
1034 13b2bc37 2022-10-23 stsp 		return err;
1035 13b2bc37 2022-10-23 stsp 
1036 0ff2c315 2023-01-18 stsp 	while (nhave != *nobj) {
1037 13b2bc37 2022-10-23 stsp 		uint8_t obj_type;
1038 13b2bc37 2022-10-23 stsp 		uint64_t obj_size;
1039 13b2bc37 2022-10-23 stsp 
1040 13b2bc37 2022-10-23 stsp 		err = copy_object_type_and_size(&obj_type, &obj_size,
1041 13b2bc37 2022-10-23 stsp 		    infd, outfd, outsize, buf, &buf_pos, &ctx);
1042 13b2bc37 2022-10-23 stsp 		if (err)
1043 13b2bc37 2022-10-23 stsp 			goto done;
1044 13b2bc37 2022-10-23 stsp 
1045 13b2bc37 2022-10-23 stsp 		err = validate_object_type(obj_type);
1046 13b2bc37 2022-10-23 stsp 		if (err)
1047 13b2bc37 2022-10-23 stsp 			goto done;
1048 13b2bc37 2022-10-23 stsp 
1049 13b2bc37 2022-10-23 stsp 		if (obj_type == GOT_OBJ_TYPE_REF_DELTA) {
1050 13b2bc37 2022-10-23 stsp 			err = copy_ref_delta(infd, outfd, outsize,
1051 13b2bc37 2022-10-23 stsp 			    buf, &buf_pos, &ctx);
1052 13b2bc37 2022-10-23 stsp 			if (err)
1053 13b2bc37 2022-10-23 stsp 				goto done;
1054 13b2bc37 2022-10-23 stsp 		} else if (obj_type == GOT_OBJ_TYPE_OFFSET_DELTA) {
1055 13b2bc37 2022-10-23 stsp 			err = copy_offset_delta(infd, outfd, outsize,
1056 13b2bc37 2022-10-23 stsp 			    buf, &buf_pos, &ctx);
1057 13b2bc37 2022-10-23 stsp 			if (err)
1058 13b2bc37 2022-10-23 stsp 				goto done;
1059 13b2bc37 2022-10-23 stsp 		}
1060 13b2bc37 2022-10-23 stsp 
1061 13b2bc37 2022-10-23 stsp 		err = copy_zstream(infd, outfd, outsize, buf, &buf_pos, &ctx);
1062 13b2bc37 2022-10-23 stsp 		if (err)
1063 13b2bc37 2022-10-23 stsp 			goto done;
1064 13b2bc37 2022-10-23 stsp 
1065 13b2bc37 2022-10-23 stsp 		nhave++;
1066 13b2bc37 2022-10-23 stsp 	}
1067 13b2bc37 2022-10-23 stsp 
1068 0ff2c315 2023-01-18 stsp 	log_debug("received %u objects", *nobj);
1069 13b2bc37 2022-10-23 stsp 
1070 ae25a666 2023-02-23 op 	got_hash_final(&ctx, expected_sha1);
1071 13b2bc37 2022-10-23 stsp 
1072 13b2bc37 2022-10-23 stsp 	remain = buf_len(buf) - buf_pos;
1073 13b2bc37 2022-10-23 stsp 	if (remain < SHA1_DIGEST_LENGTH) {
1074 13b2bc37 2022-10-23 stsp 		err = read_more_pack_stream(infd, buf,
1075 13b2bc37 2022-10-23 stsp 		    SHA1_DIGEST_LENGTH - remain);
1076 13b2bc37 2022-10-23 stsp 		if (err)
1077 13b2bc37 2022-10-23 stsp 			return err;
1078 13b2bc37 2022-10-23 stsp 	}
1079 13b2bc37 2022-10-23 stsp 
1080 13b2bc37 2022-10-23 stsp 	got_sha1_digest_to_str(expected_sha1, hex, sizeof(hex));
1081 13b2bc37 2022-10-23 stsp 	log_debug("expect SHA1: %s", hex);
1082 13b2bc37 2022-10-23 stsp 	got_sha1_digest_to_str(buf_get(buf) + buf_pos, hex, sizeof(hex));
1083 13b2bc37 2022-10-23 stsp 	log_debug("actual SHA1: %s", hex);
1084 13b2bc37 2022-10-23 stsp 
1085 13b2bc37 2022-10-23 stsp 	if (memcmp(buf_get(buf) + buf_pos, expected_sha1,
1086 13b2bc37 2022-10-23 stsp 	    SHA1_DIGEST_LENGTH) != 0) {
1087 13b2bc37 2022-10-23 stsp 		err = got_error(GOT_ERR_PACKFILE_CSUM);
1088 13b2bc37 2022-10-23 stsp 		goto done;
1089 13b2bc37 2022-10-23 stsp 	}
1090 13b2bc37 2022-10-23 stsp 
1091 13b2bc37 2022-10-23 stsp 	memcpy(sha1, expected_sha1, SHA1_DIGEST_LENGTH);
1092 13b2bc37 2022-10-23 stsp 
1093 13b2bc37 2022-10-23 stsp 	w = write(outfd, expected_sha1, SHA1_DIGEST_LENGTH);
1094 13b2bc37 2022-10-23 stsp 	if (w == -1) {
1095 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("write");
1096 13b2bc37 2022-10-23 stsp 		goto done;
1097 13b2bc37 2022-10-23 stsp 	}
1098 13b2bc37 2022-10-23 stsp 	if (w != SHA1_DIGEST_LENGTH) {
1099 13b2bc37 2022-10-23 stsp 		err = got_error(GOT_ERR_IO);
1100 13b2bc37 2022-10-23 stsp 		goto done;
1101 13b2bc37 2022-10-23 stsp 	}
1102 13b2bc37 2022-10-23 stsp 
1103 13b2bc37 2022-10-23 stsp 	*outsize += SHA1_DIGEST_LENGTH;
1104 13b2bc37 2022-10-23 stsp 
1105 13b2bc37 2022-10-23 stsp 	if (fsync(outfd) == -1) {
1106 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("fsync");
1107 13b2bc37 2022-10-23 stsp 		goto done;
1108 13b2bc37 2022-10-23 stsp 	}
1109 13b2bc37 2022-10-23 stsp 	if (lseek(outfd, 0L, SEEK_SET) == -1) {
1110 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("lseek");
1111 13b2bc37 2022-10-23 stsp 		goto done;
1112 13b2bc37 2022-10-23 stsp 	}
1113 13b2bc37 2022-10-23 stsp done:
1114 13b2bc37 2022-10-23 stsp 	buf_free(buf);
1115 13b2bc37 2022-10-23 stsp 	return err;
1116 13b2bc37 2022-10-23 stsp }
1117 13b2bc37 2022-10-23 stsp 
1118 13b2bc37 2022-10-23 stsp static const struct got_error *
1119 1a52c9bf 2022-12-30 stsp report_pack_status(const struct got_error *unpack_err)
1120 13b2bc37 2022-10-23 stsp {
1121 13b2bc37 2022-10-23 stsp 	const struct got_error *err = NULL;
1122 1a52c9bf 2022-12-30 stsp 	struct repo_write_client *client = &repo_write_client;
1123 13b2bc37 2022-10-23 stsp 	struct gotd_imsg_packfile_status istatus;
1124 13b2bc37 2022-10-23 stsp 	struct ibuf *wbuf;
1125 13b2bc37 2022-10-23 stsp 	struct imsgbuf ibuf;
1126 13b2bc37 2022-10-23 stsp 	const char *unpack_ok = "unpack ok\n";
1127 13b2bc37 2022-10-23 stsp 	size_t len;
1128 e26970cc 2023-01-10 op 
1129 13b2bc37 2022-10-23 stsp 	imsg_init(&ibuf, client->fd);
1130 13b2bc37 2022-10-23 stsp 
1131 13b2bc37 2022-10-23 stsp 	if (unpack_err)
1132 13b2bc37 2022-10-23 stsp 		istatus.reason_len = strlen(unpack_err->msg);
1133 13b2bc37 2022-10-23 stsp 	else
1134 13b2bc37 2022-10-23 stsp 		istatus.reason_len = strlen(unpack_ok);
1135 13b2bc37 2022-10-23 stsp 
1136 13b2bc37 2022-10-23 stsp 	len = sizeof(istatus) + istatus.reason_len;
1137 13b2bc37 2022-10-23 stsp 	wbuf = imsg_create(&ibuf, GOTD_IMSG_PACKFILE_STATUS, PROC_REPO_WRITE,
1138 13b2bc37 2022-10-23 stsp 	    repo_write.pid, len);
1139 13b2bc37 2022-10-23 stsp 	if (wbuf == NULL) {
1140 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("imsg_create PACKFILE_STATUS");
1141 13b2bc37 2022-10-23 stsp 		goto done;
1142 13b2bc37 2022-10-23 stsp 	}
1143 13b2bc37 2022-10-23 stsp 
1144 13b2bc37 2022-10-23 stsp 	if (imsg_add(wbuf, &istatus, sizeof(istatus)) == -1) {
1145 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("imsg_add PACKFILE_STATUS");
1146 13b2bc37 2022-10-23 stsp 		goto done;
1147 13b2bc37 2022-10-23 stsp 	}
1148 13b2bc37 2022-10-23 stsp 
1149 13b2bc37 2022-10-23 stsp 	if (imsg_add(wbuf, err ? err->msg : unpack_ok,
1150 13b2bc37 2022-10-23 stsp 	    istatus.reason_len) == -1) {
1151 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("imsg_add PACKFILE_STATUS");
1152 13b2bc37 2022-10-23 stsp 		goto done;
1153 13b2bc37 2022-10-23 stsp 	}
1154 13b2bc37 2022-10-23 stsp 
1155 13b2bc37 2022-10-23 stsp 	wbuf->fd = -1;
1156 13b2bc37 2022-10-23 stsp 	imsg_close(&ibuf, wbuf);
1157 13b2bc37 2022-10-23 stsp 
1158 13b2bc37 2022-10-23 stsp 	err = gotd_imsg_flush(&ibuf);
1159 13b2bc37 2022-10-23 stsp done:
1160 13b2bc37 2022-10-23 stsp 	imsg_clear(&ibuf);
1161 13b2bc37 2022-10-23 stsp 	return err;
1162 13b2bc37 2022-10-23 stsp }
1163 13b2bc37 2022-10-23 stsp 
1164 13b2bc37 2022-10-23 stsp static const struct got_error *
1165 0ff2c315 2023-01-18 stsp recv_packfile(int *have_packfile, struct imsg *imsg)
1166 13b2bc37 2022-10-23 stsp {
1167 13b2bc37 2022-10-23 stsp 	const struct got_error *err = NULL, *unpack_err;
1168 1a52c9bf 2022-12-30 stsp 	struct repo_write_client *client = &repo_write_client;
1169 13b2bc37 2022-10-23 stsp 	struct gotd_imsg_recv_packfile ireq;
1170 13b2bc37 2022-10-23 stsp 	FILE *tempfiles[3] = { NULL, NULL, NULL };
1171 13b2bc37 2022-10-23 stsp 	struct repo_tempfile {
1172 13b2bc37 2022-10-23 stsp 		int fd;
1173 13b2bc37 2022-10-23 stsp 		int idx;
1174 13b2bc37 2022-10-23 stsp 	} repo_tempfiles[3] = { { - 1, - 1 }, { - 1, - 1 }, { - 1, - 1 }, };
1175 13b2bc37 2022-10-23 stsp 	int i;
1176 13b2bc37 2022-10-23 stsp 	size_t datalen;
1177 13b2bc37 2022-10-23 stsp 	struct imsgbuf ibuf;
1178 13b2bc37 2022-10-23 stsp 	struct got_ratelimit rl;
1179 13b2bc37 2022-10-23 stsp 	struct got_pack *pack = NULL;
1180 13b2bc37 2022-10-23 stsp 	off_t pack_filesize = 0;
1181 0ff2c315 2023-01-18 stsp 	uint32_t nobj = 0;
1182 13b2bc37 2022-10-23 stsp 
1183 13b2bc37 2022-10-23 stsp 	log_debug("packfile request received");
1184 13b2bc37 2022-10-23 stsp 
1185 0ff2c315 2023-01-18 stsp 	*have_packfile = 0;
1186 13b2bc37 2022-10-23 stsp 	got_ratelimit_init(&rl, 2, 0);
1187 13b2bc37 2022-10-23 stsp 
1188 13b2bc37 2022-10-23 stsp 	datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
1189 13b2bc37 2022-10-23 stsp 	if (datalen != sizeof(ireq))
1190 13b2bc37 2022-10-23 stsp 		return got_error(GOT_ERR_PRIVSEP_LEN);
1191 13b2bc37 2022-10-23 stsp 	memcpy(&ireq, imsg->data, sizeof(ireq));
1192 13b2bc37 2022-10-23 stsp 
1193 1a52c9bf 2022-12-30 stsp 	if (client->pack_pipe == -1 || client->packidx_fd == -1)
1194 13b2bc37 2022-10-23 stsp 		return got_error(GOT_ERR_PRIVSEP_NO_FD);
1195 13b2bc37 2022-10-23 stsp 
1196 1a52c9bf 2022-12-30 stsp 	imsg_init(&ibuf, client->fd);
1197 13b2bc37 2022-10-23 stsp 
1198 13b2bc37 2022-10-23 stsp 	if (imsg->fd == -1)
1199 13b2bc37 2022-10-23 stsp 		return got_error(GOT_ERR_PRIVSEP_NO_FD);
1200 13b2bc37 2022-10-23 stsp 
1201 1a52c9bf 2022-12-30 stsp 	pack = &client->pack;
1202 13b2bc37 2022-10-23 stsp 	memset(pack, 0, sizeof(*pack));
1203 13b2bc37 2022-10-23 stsp 	pack->fd = imsg->fd;
1204 13b2bc37 2022-10-23 stsp 	err = got_delta_cache_alloc(&pack->delta_cache);
1205 13b2bc37 2022-10-23 stsp 	if (err)
1206 13b2bc37 2022-10-23 stsp 		return err;
1207 13b2bc37 2022-10-23 stsp 
1208 13b2bc37 2022-10-23 stsp 	for (i = 0; i < nitems(repo_tempfiles); i++) {
1209 13b2bc37 2022-10-23 stsp 		struct repo_tempfile *t = &repo_tempfiles[i];
1210 13b2bc37 2022-10-23 stsp 		err = got_repo_temp_fds_get(&t->fd, &t->idx, repo_write.repo);
1211 13b2bc37 2022-10-23 stsp 		if (err)
1212 13b2bc37 2022-10-23 stsp 			goto done;
1213 13b2bc37 2022-10-23 stsp 	}
1214 13b2bc37 2022-10-23 stsp 
1215 13b2bc37 2022-10-23 stsp 	for (i = 0; i < nitems(tempfiles); i++) {
1216 e294dc4e 2023-02-03 mark 		int fd;
1217 13b2bc37 2022-10-23 stsp 		FILE *f;
1218 e294dc4e 2023-02-03 mark 
1219 e294dc4e 2023-02-03 mark 		fd = dup(repo_tempfiles[i].fd);
1220 13b2bc37 2022-10-23 stsp 		if (fd == -1) {
1221 13b2bc37 2022-10-23 stsp 			err = got_error_from_errno("dup");
1222 13b2bc37 2022-10-23 stsp 			goto done;
1223 13b2bc37 2022-10-23 stsp 		}
1224 13b2bc37 2022-10-23 stsp 		f = fdopen(fd, "w+");
1225 13b2bc37 2022-10-23 stsp 		if (f == NULL) {
1226 e294dc4e 2023-02-03 mark 			err = got_error_from_errno("fdopen");
1227 13b2bc37 2022-10-23 stsp 			close(fd);
1228 13b2bc37 2022-10-23 stsp 			goto done;
1229 13b2bc37 2022-10-23 stsp 		}
1230 13b2bc37 2022-10-23 stsp 		tempfiles[i] = f;
1231 13b2bc37 2022-10-23 stsp 	}
1232 13b2bc37 2022-10-23 stsp 
1233 13b2bc37 2022-10-23 stsp 	err = gotd_imsg_flush(&ibuf);
1234 13b2bc37 2022-10-23 stsp 	if (err)
1235 13b2bc37 2022-10-23 stsp 		goto done;
1236 13b2bc37 2022-10-23 stsp 
1237 13b2bc37 2022-10-23 stsp 	log_debug("receiving pack data");
1238 0ff2c315 2023-01-18 stsp 	unpack_err = recv_packdata(&pack_filesize, &nobj,
1239 0ff2c315 2023-01-18 stsp 	    client->pack_sha1, client->pack_pipe, pack->fd);
1240 13b2bc37 2022-10-23 stsp 	if (ireq.report_status) {
1241 1a52c9bf 2022-12-30 stsp 		err = report_pack_status(unpack_err);
1242 13b2bc37 2022-10-23 stsp 		if (err) {
1243 13b2bc37 2022-10-23 stsp 			/* Git clients hang up after sending the pack file. */
1244 13b2bc37 2022-10-23 stsp 			if (err->code == GOT_ERR_EOF)
1245 13b2bc37 2022-10-23 stsp 				err = NULL;
1246 13b2bc37 2022-10-23 stsp 		}
1247 13b2bc37 2022-10-23 stsp 	}
1248 13b2bc37 2022-10-23 stsp 	if (unpack_err)
1249 13b2bc37 2022-10-23 stsp 		err = unpack_err;
1250 13b2bc37 2022-10-23 stsp 	if (err)
1251 13b2bc37 2022-10-23 stsp 		goto done;
1252 13b2bc37 2022-10-23 stsp 
1253 13b2bc37 2022-10-23 stsp 	log_debug("pack data received");
1254 0ff2c315 2023-01-18 stsp 
1255 0ff2c315 2023-01-18 stsp 	/*
1256 0ff2c315 2023-01-18 stsp 	 * Clients which are creating new references only will
1257 0ff2c315 2023-01-18 stsp 	 * send us an empty pack file.
1258 0ff2c315 2023-01-18 stsp 	 */
1259 0ff2c315 2023-01-18 stsp 	if (nobj == 0 &&
1260 0ff2c315 2023-01-18 stsp 	    pack_filesize == sizeof(struct got_packfile_hdr) &&
1261 0ff2c315 2023-01-18 stsp 	    client->nref_updates > 0 &&
1262 0ff2c315 2023-01-18 stsp 	    client->nref_updates == client->nref_new)
1263 0ff2c315 2023-01-18 stsp 		goto done;
1264 13b2bc37 2022-10-23 stsp 
1265 9a8e357c 2023-01-28 op 	/*
1266 9a8e357c 2023-01-28 op 	 * Clients which are deleting references only will send
1267 9a8e357c 2023-01-28 op 	 * no pack file.
1268 9a8e357c 2023-01-28 op 	 */
1269 9a8e357c 2023-01-28 op 	if (nobj == 0 &&
1270 9a8e357c 2023-01-28 op 	    client->nref_del > 0 &&
1271 9a8e357c 2023-01-28 op 	    client->nref_updates == client->nref_del)
1272 9a8e357c 2023-01-28 op 		goto done;
1273 9a8e357c 2023-01-28 op 
1274 13b2bc37 2022-10-23 stsp 	pack->filesize = pack_filesize;
1275 0ff2c315 2023-01-18 stsp 	*have_packfile = 1;
1276 13b2bc37 2022-10-23 stsp 
1277 ad4cc361 2022-10-27 op 	log_debug("begin indexing pack (%lld bytes in size)",
1278 ad4cc361 2022-10-27 op 	    (long long)pack->filesize);
1279 1a52c9bf 2022-12-30 stsp 	err = got_pack_index(pack, client->packidx_fd,
1280 1a52c9bf 2022-12-30 stsp 	    tempfiles[0], tempfiles[1], tempfiles[2], client->pack_sha1,
1281 13b2bc37 2022-10-23 stsp 	    pack_index_progress, NULL, &rl);
1282 13b2bc37 2022-10-23 stsp 	if (err)
1283 13b2bc37 2022-10-23 stsp 		goto done;
1284 13b2bc37 2022-10-23 stsp 	log_debug("done indexing pack");
1285 13b2bc37 2022-10-23 stsp 
1286 1a52c9bf 2022-12-30 stsp 	if (fsync(client->packidx_fd) == -1) {
1287 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("fsync");
1288 13b2bc37 2022-10-23 stsp 		goto done;
1289 13b2bc37 2022-10-23 stsp 	}
1290 1a52c9bf 2022-12-30 stsp 	if (lseek(client->packidx_fd, 0L, SEEK_SET) == -1)
1291 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("lseek");
1292 13b2bc37 2022-10-23 stsp done:
1293 1a52c9bf 2022-12-30 stsp 	if (close(client->pack_pipe) == -1 && err == NULL)
1294 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("close");
1295 1a52c9bf 2022-12-30 stsp 	client->pack_pipe = -1;
1296 13b2bc37 2022-10-23 stsp 	for (i = 0; i < nitems(repo_tempfiles); i++) {
1297 13b2bc37 2022-10-23 stsp 		struct repo_tempfile *t = &repo_tempfiles[i];
1298 13b2bc37 2022-10-23 stsp 		if (t->idx != -1)
1299 13b2bc37 2022-10-23 stsp 			got_repo_temp_fds_put(t->idx, repo_write.repo);
1300 13b2bc37 2022-10-23 stsp 	}
1301 13b2bc37 2022-10-23 stsp 	for (i = 0; i < nitems(tempfiles); i++) {
1302 13b2bc37 2022-10-23 stsp 		if (tempfiles[i] && fclose(tempfiles[i]) == EOF && err == NULL)
1303 13b2bc37 2022-10-23 stsp 			err = got_error_from_errno("fclose");
1304 13b2bc37 2022-10-23 stsp 	}
1305 13b2bc37 2022-10-23 stsp 	if (err)
1306 13b2bc37 2022-10-23 stsp 		got_pack_close(pack);
1307 13b2bc37 2022-10-23 stsp 	imsg_clear(&ibuf);
1308 13b2bc37 2022-10-23 stsp 	return err;
1309 13b2bc37 2022-10-23 stsp }
1310 13b2bc37 2022-10-23 stsp 
1311 13b2bc37 2022-10-23 stsp static const struct got_error *
1312 1a52c9bf 2022-12-30 stsp verify_packfile(void)
1313 13b2bc37 2022-10-23 stsp {
1314 13b2bc37 2022-10-23 stsp 	const struct got_error *err = NULL, *close_err;
1315 1a52c9bf 2022-12-30 stsp 	struct repo_write_client *client = &repo_write_client;
1316 13b2bc37 2022-10-23 stsp 	struct gotd_ref_update *ref_update;
1317 13b2bc37 2022-10-23 stsp 	struct got_packidx *packidx = NULL;
1318 13b2bc37 2022-10-23 stsp 	struct stat sb;
1319 13b2bc37 2022-10-23 stsp 	char *id_str = NULL;
1320 9afa3de2 2023-04-04 stsp 	struct got_object *obj = NULL;
1321 9afa3de2 2023-04-04 stsp 	struct got_pathlist_entry *pe;
1322 9afa3de2 2023-04-04 stsp 	char hex[SHA1_DIGEST_STRING_LENGTH];
1323 13b2bc37 2022-10-23 stsp 
1324 13b2bc37 2022-10-23 stsp 	if (STAILQ_EMPTY(&client->ref_updates)) {
1325 13b2bc37 2022-10-23 stsp 		return got_error_msg(GOT_ERR_BAD_REQUEST,
1326 13b2bc37 2022-10-23 stsp 		    "cannot verify pack file without any ref-updates");
1327 13b2bc37 2022-10-23 stsp 	}
1328 13b2bc37 2022-10-23 stsp 
1329 13b2bc37 2022-10-23 stsp 	if (client->pack.fd == -1) {
1330 13b2bc37 2022-10-23 stsp 		return got_error_msg(GOT_ERR_BAD_REQUEST,
1331 13b2bc37 2022-10-23 stsp 		    "invalid pack file handle during pack verification");
1332 13b2bc37 2022-10-23 stsp 	}
1333 13b2bc37 2022-10-23 stsp 	if (client->packidx_fd == -1) {
1334 13b2bc37 2022-10-23 stsp 		return got_error_msg(GOT_ERR_BAD_REQUEST,
1335 13b2bc37 2022-10-23 stsp 		    "invalid pack index handle during pack verification");
1336 13b2bc37 2022-10-23 stsp 	}
1337 13b2bc37 2022-10-23 stsp 
1338 13b2bc37 2022-10-23 stsp 	if (fstat(client->packidx_fd, &sb) == -1)
1339 13b2bc37 2022-10-23 stsp 		return got_error_from_errno("pack index fstat");
1340 13b2bc37 2022-10-23 stsp 
1341 13b2bc37 2022-10-23 stsp 	packidx = malloc(sizeof(*packidx));
1342 13b2bc37 2022-10-23 stsp 	memset(packidx, 0, sizeof(*packidx));
1343 13b2bc37 2022-10-23 stsp 	packidx->fd = client->packidx_fd;
1344 13b2bc37 2022-10-23 stsp 	client->packidx_fd = -1;
1345 13b2bc37 2022-10-23 stsp 	packidx->len = sb.st_size;
1346 e26970cc 2023-01-10 op 
1347 13b2bc37 2022-10-23 stsp 	err = got_packidx_init_hdr(packidx, 1, client->pack.filesize);
1348 13b2bc37 2022-10-23 stsp 	if (err)
1349 13b2bc37 2022-10-23 stsp 		return err;
1350 13b2bc37 2022-10-23 stsp 
1351 13b2bc37 2022-10-23 stsp 	STAILQ_FOREACH(ref_update, &client->ref_updates, entry) {
1352 9a8e357c 2023-01-28 op 		if (ref_update->delete_ref)
1353 9a8e357c 2023-01-28 op 			continue;
1354 9a8e357c 2023-01-28 op 
1355 9afa3de2 2023-04-04 stsp 		TAILQ_FOREACH(pe, repo_write.protected_tag_namespaces, entry) {
1356 9afa3de2 2023-04-04 stsp 			err = protect_tag_namespace(pe->path, &client->pack,
1357 9afa3de2 2023-04-04 stsp 			    packidx, ref_update);
1358 9afa3de2 2023-04-04 stsp 			if (err)
1359 9afa3de2 2023-04-04 stsp 				goto done;
1360 9afa3de2 2023-04-04 stsp 		}
1361 13b2bc37 2022-10-23 stsp 
1362 9afa3de2 2023-04-04 stsp 		/*
1363 9afa3de2 2023-04-04 stsp 		 * Objects which already exist in our repository need
1364 9afa3de2 2023-04-04 stsp 		 * not be present in the pack file.
1365 9afa3de2 2023-04-04 stsp 		 */
1366 9afa3de2 2023-04-04 stsp 		err = got_object_open(&obj, repo_write.repo,
1367 9afa3de2 2023-04-04 stsp 		    &ref_update->new_id);
1368 9afa3de2 2023-04-04 stsp 		if (err && err->code != GOT_ERR_NO_OBJ)
1369 13b2bc37 2022-10-23 stsp 			goto done;
1370 9afa3de2 2023-04-04 stsp 		err = NULL;
1371 9afa3de2 2023-04-04 stsp 		if (obj) {
1372 9afa3de2 2023-04-04 stsp 			got_object_close(obj);
1373 9afa3de2 2023-04-04 stsp 			obj = NULL;
1374 9afa3de2 2023-04-04 stsp 		} else {
1375 9afa3de2 2023-04-04 stsp 			int idx = got_packidx_get_object_idx(packidx,
1376 9afa3de2 2023-04-04 stsp 			    &ref_update->new_id);
1377 9afa3de2 2023-04-04 stsp 			if (idx == -1) {
1378 9afa3de2 2023-04-04 stsp 				got_sha1_digest_to_str(ref_update->new_id.sha1,
1379 9afa3de2 2023-04-04 stsp 				    hex, sizeof(hex));
1380 9afa3de2 2023-04-04 stsp 				err = got_error_fmt(GOT_ERR_BAD_PACKFILE,
1381 9afa3de2 2023-04-04 stsp 				    "object %s is missing from pack file",
1382 9afa3de2 2023-04-04 stsp 				    hex);
1383 9afa3de2 2023-04-04 stsp 				goto done;
1384 9afa3de2 2023-04-04 stsp 			}
1385 13b2bc37 2022-10-23 stsp 		}
1386 9afa3de2 2023-04-04 stsp 
1387 9afa3de2 2023-04-04 stsp 		TAILQ_FOREACH(pe, repo_write.protected_branch_namespaces,
1388 9afa3de2 2023-04-04 stsp 		    entry) {
1389 9afa3de2 2023-04-04 stsp 			err = protect_branch_namespace(pe->path,
1390 9afa3de2 2023-04-04 stsp 			    &client->pack, packidx, ref_update);
1391 9afa3de2 2023-04-04 stsp 			if (err)
1392 9afa3de2 2023-04-04 stsp 				goto done;
1393 9afa3de2 2023-04-04 stsp 		}
1394 9afa3de2 2023-04-04 stsp 		TAILQ_FOREACH(pe, repo_write.protected_branches, entry) {
1395 9afa3de2 2023-04-04 stsp 			err = protect_branch(pe->path, &client->pack,
1396 9afa3de2 2023-04-04 stsp 			    packidx, ref_update);
1397 9afa3de2 2023-04-04 stsp 			if (err)
1398 9afa3de2 2023-04-04 stsp 				goto done;
1399 9afa3de2 2023-04-04 stsp 		}
1400 13b2bc37 2022-10-23 stsp 	}
1401 13b2bc37 2022-10-23 stsp 
1402 e26970cc 2023-01-10 op done:
1403 13b2bc37 2022-10-23 stsp 	close_err = got_packidx_close(packidx);
1404 13b2bc37 2022-10-23 stsp 	if (close_err && err == NULL)
1405 13b2bc37 2022-10-23 stsp 		err = close_err;
1406 13b2bc37 2022-10-23 stsp 	free(id_str);
1407 9afa3de2 2023-04-04 stsp 	if (obj)
1408 9afa3de2 2023-04-04 stsp 		got_object_close(obj);
1409 13b2bc37 2022-10-23 stsp 	return err;
1410 13b2bc37 2022-10-23 stsp }
1411 13b2bc37 2022-10-23 stsp 
1412 13b2bc37 2022-10-23 stsp static const struct got_error *
1413 9afa3de2 2023-04-04 stsp protect_refs_from_deletion(void)
1414 9afa3de2 2023-04-04 stsp {
1415 9afa3de2 2023-04-04 stsp 	const struct got_error *err = NULL;
1416 9afa3de2 2023-04-04 stsp 	struct repo_write_client *client = &repo_write_client;
1417 9afa3de2 2023-04-04 stsp 	struct gotd_ref_update *ref_update;
1418 9afa3de2 2023-04-04 stsp 	struct got_pathlist_entry *pe;
1419 9afa3de2 2023-04-04 stsp 	const char *refname;
1420 9afa3de2 2023-04-04 stsp 
1421 9afa3de2 2023-04-04 stsp 	STAILQ_FOREACH(ref_update, &client->ref_updates, entry) {
1422 9afa3de2 2023-04-04 stsp 		if (!ref_update->delete_ref)
1423 9afa3de2 2023-04-04 stsp 			continue;
1424 9afa3de2 2023-04-04 stsp 
1425 9afa3de2 2023-04-04 stsp 		refname = got_ref_get_name(ref_update->ref);
1426 9afa3de2 2023-04-04 stsp 
1427 9afa3de2 2023-04-04 stsp 		TAILQ_FOREACH(pe, repo_write.protected_tag_namespaces, entry) {
1428 9afa3de2 2023-04-04 stsp 			err = protect_ref_namespace(refname, pe->path);
1429 9afa3de2 2023-04-04 stsp 			if (err)
1430 9afa3de2 2023-04-04 stsp 				return err;
1431 9afa3de2 2023-04-04 stsp 		}
1432 9afa3de2 2023-04-04 stsp 
1433 9afa3de2 2023-04-04 stsp 		TAILQ_FOREACH(pe, repo_write.protected_branch_namespaces,
1434 9afa3de2 2023-04-04 stsp 		    entry) {
1435 9afa3de2 2023-04-04 stsp 			err = protect_ref_namespace(refname, pe->path);
1436 9afa3de2 2023-04-04 stsp 			if (err)
1437 9afa3de2 2023-04-04 stsp 				return err;
1438 9afa3de2 2023-04-04 stsp 		}
1439 9afa3de2 2023-04-04 stsp 
1440 9afa3de2 2023-04-04 stsp 		TAILQ_FOREACH(pe, repo_write.protected_branches, entry) {
1441 9afa3de2 2023-04-04 stsp 			if (strcmp(refname, pe->path) == 0) {
1442 9afa3de2 2023-04-04 stsp 				return got_error_fmt(GOT_ERR_REF_PROTECTED,
1443 9afa3de2 2023-04-04 stsp 				    "%s", refname);
1444 9afa3de2 2023-04-04 stsp 			}
1445 9afa3de2 2023-04-04 stsp 		}
1446 9afa3de2 2023-04-04 stsp 	}
1447 9afa3de2 2023-04-04 stsp 
1448 9afa3de2 2023-04-04 stsp 	return NULL;
1449 9afa3de2 2023-04-04 stsp }
1450 9afa3de2 2023-04-04 stsp 
1451 9afa3de2 2023-04-04 stsp static const struct got_error *
1452 1a52c9bf 2022-12-30 stsp install_packfile(struct gotd_imsgev *iev)
1453 13b2bc37 2022-10-23 stsp {
1454 1a52c9bf 2022-12-30 stsp 	struct repo_write_client *client = &repo_write_client;
1455 13b2bc37 2022-10-23 stsp 	struct gotd_imsg_packfile_install inst;
1456 13b2bc37 2022-10-23 stsp 	int ret;
1457 13b2bc37 2022-10-23 stsp 
1458 13b2bc37 2022-10-23 stsp 	memset(&inst, 0, sizeof(inst));
1459 13b2bc37 2022-10-23 stsp 	inst.client_id = client->id;
1460 13b2bc37 2022-10-23 stsp 	memcpy(inst.pack_sha1, client->pack_sha1, SHA1_DIGEST_LENGTH);
1461 13b2bc37 2022-10-23 stsp 
1462 13b2bc37 2022-10-23 stsp 	ret = gotd_imsg_compose_event(iev, GOTD_IMSG_PACKFILE_INSTALL,
1463 13b2bc37 2022-10-23 stsp 	    PROC_REPO_WRITE, -1, &inst, sizeof(inst));
1464 13b2bc37 2022-10-23 stsp 	if (ret == -1)
1465 13b2bc37 2022-10-23 stsp 		return got_error_from_errno("imsg_compose PACKFILE_INSTALL");
1466 13b2bc37 2022-10-23 stsp 
1467 13b2bc37 2022-10-23 stsp 	return NULL;
1468 13b2bc37 2022-10-23 stsp }
1469 13b2bc37 2022-10-23 stsp 
1470 13b2bc37 2022-10-23 stsp static const struct got_error *
1471 1a52c9bf 2022-12-30 stsp send_ref_updates_start(int nref_updates, struct gotd_imsgev *iev)
1472 13b2bc37 2022-10-23 stsp {
1473 1a52c9bf 2022-12-30 stsp 	struct repo_write_client *client = &repo_write_client;
1474 13b2bc37 2022-10-23 stsp 	struct gotd_imsg_ref_updates_start istart;
1475 13b2bc37 2022-10-23 stsp 	int ret;
1476 13b2bc37 2022-10-23 stsp 
1477 13b2bc37 2022-10-23 stsp 	memset(&istart, 0, sizeof(istart));
1478 13b2bc37 2022-10-23 stsp 	istart.nref_updates = nref_updates;
1479 13b2bc37 2022-10-23 stsp 	istart.client_id = client->id;
1480 13b2bc37 2022-10-23 stsp 
1481 13b2bc37 2022-10-23 stsp 	ret = gotd_imsg_compose_event(iev, GOTD_IMSG_REF_UPDATES_START,
1482 13b2bc37 2022-10-23 stsp 	    PROC_REPO_WRITE, -1, &istart, sizeof(istart));
1483 13b2bc37 2022-10-23 stsp 	if (ret == -1)
1484 13b2bc37 2022-10-23 stsp 		return got_error_from_errno("imsg_compose REF_UPDATES_START");
1485 13b2bc37 2022-10-23 stsp 
1486 13b2bc37 2022-10-23 stsp 	return NULL;
1487 13b2bc37 2022-10-23 stsp }
1488 13b2bc37 2022-10-23 stsp 
1489 13b2bc37 2022-10-23 stsp 
1490 13b2bc37 2022-10-23 stsp static const struct got_error *
1491 1a52c9bf 2022-12-30 stsp send_ref_update(struct gotd_ref_update *ref_update, struct gotd_imsgev *iev)
1492 13b2bc37 2022-10-23 stsp {
1493 1a52c9bf 2022-12-30 stsp 	struct repo_write_client *client = &repo_write_client;
1494 13b2bc37 2022-10-23 stsp 	struct gotd_imsg_ref_update iref;
1495 13b2bc37 2022-10-23 stsp 	const char *refname = got_ref_get_name(ref_update->ref);
1496 13b2bc37 2022-10-23 stsp 	struct ibuf *wbuf;
1497 13b2bc37 2022-10-23 stsp 	size_t len;
1498 13b2bc37 2022-10-23 stsp 
1499 13b2bc37 2022-10-23 stsp 	memset(&iref, 0, sizeof(iref));
1500 13b2bc37 2022-10-23 stsp 	memcpy(iref.old_id, ref_update->old_id.sha1, SHA1_DIGEST_LENGTH);
1501 13b2bc37 2022-10-23 stsp 	memcpy(iref.new_id, ref_update->new_id.sha1, SHA1_DIGEST_LENGTH);
1502 13b2bc37 2022-10-23 stsp 	iref.ref_is_new = ref_update->ref_is_new;
1503 9a8e357c 2023-01-28 op 	iref.delete_ref = ref_update->delete_ref;
1504 13b2bc37 2022-10-23 stsp 	iref.client_id = client->id;
1505 13b2bc37 2022-10-23 stsp 	iref.name_len = strlen(refname);
1506 13b2bc37 2022-10-23 stsp 
1507 13b2bc37 2022-10-23 stsp 	len = sizeof(iref) + iref.name_len;
1508 13b2bc37 2022-10-23 stsp 	wbuf = imsg_create(&iev->ibuf, GOTD_IMSG_REF_UPDATE, PROC_REPO_WRITE,
1509 13b2bc37 2022-10-23 stsp 	    repo_write.pid, len);
1510 13b2bc37 2022-10-23 stsp 	if (wbuf == NULL)
1511 13b2bc37 2022-10-23 stsp 		return got_error_from_errno("imsg_create REF_UPDATE");
1512 13b2bc37 2022-10-23 stsp 
1513 13b2bc37 2022-10-23 stsp 	if (imsg_add(wbuf, &iref, sizeof(iref)) == -1)
1514 13b2bc37 2022-10-23 stsp 		return got_error_from_errno("imsg_add REF_UPDATE");
1515 13b2bc37 2022-10-23 stsp 	if (imsg_add(wbuf, refname, iref.name_len) == -1)
1516 13b2bc37 2022-10-23 stsp 		return got_error_from_errno("imsg_add REF_UPDATE");
1517 13b2bc37 2022-10-23 stsp 
1518 13b2bc37 2022-10-23 stsp 	wbuf->fd = -1;
1519 13b2bc37 2022-10-23 stsp 	imsg_close(&iev->ibuf, wbuf);
1520 13b2bc37 2022-10-23 stsp 
1521 13b2bc37 2022-10-23 stsp 	gotd_imsg_event_add(iev);
1522 13b2bc37 2022-10-23 stsp 	return NULL;
1523 13b2bc37 2022-10-23 stsp }
1524 13b2bc37 2022-10-23 stsp 
1525 13b2bc37 2022-10-23 stsp static const struct got_error *
1526 1a52c9bf 2022-12-30 stsp update_refs(struct gotd_imsgev *iev)
1527 13b2bc37 2022-10-23 stsp {
1528 13b2bc37 2022-10-23 stsp 	const struct got_error *err = NULL;
1529 1a52c9bf 2022-12-30 stsp 	struct repo_write_client *client = &repo_write_client;
1530 13b2bc37 2022-10-23 stsp 	struct gotd_ref_update *ref_update;
1531 13b2bc37 2022-10-23 stsp 
1532 1a52c9bf 2022-12-30 stsp 	err = send_ref_updates_start(client->nref_updates, iev);
1533 13b2bc37 2022-10-23 stsp 	if (err)
1534 13b2bc37 2022-10-23 stsp 		return err;
1535 13b2bc37 2022-10-23 stsp 
1536 13b2bc37 2022-10-23 stsp 	STAILQ_FOREACH(ref_update, &client->ref_updates, entry) {
1537 1a52c9bf 2022-12-30 stsp 		err = send_ref_update(ref_update, iev);
1538 13b2bc37 2022-10-23 stsp 		if (err)
1539 13b2bc37 2022-10-23 stsp 			goto done;
1540 13b2bc37 2022-10-23 stsp 	}
1541 13b2bc37 2022-10-23 stsp done:
1542 13b2bc37 2022-10-23 stsp 	return err;
1543 13b2bc37 2022-10-23 stsp }
1544 13b2bc37 2022-10-23 stsp 
1545 13b2bc37 2022-10-23 stsp static const struct got_error *
1546 1a52c9bf 2022-12-30 stsp receive_pack_pipe(struct imsg *imsg, struct gotd_imsgev *iev)
1547 13b2bc37 2022-10-23 stsp {
1548 1a52c9bf 2022-12-30 stsp 	struct repo_write_client *client = &repo_write_client;
1549 13b2bc37 2022-10-23 stsp 	struct gotd_imsg_packfile_pipe ireq;
1550 13b2bc37 2022-10-23 stsp 	size_t datalen;
1551 13b2bc37 2022-10-23 stsp 
1552 13b2bc37 2022-10-23 stsp 	log_debug("receving pack pipe descriptor");
1553 13b2bc37 2022-10-23 stsp 
1554 13b2bc37 2022-10-23 stsp 	if (imsg->fd == -1)
1555 13b2bc37 2022-10-23 stsp 		return got_error(GOT_ERR_PRIVSEP_NO_FD);
1556 13b2bc37 2022-10-23 stsp 
1557 13b2bc37 2022-10-23 stsp 	datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
1558 13b2bc37 2022-10-23 stsp 	if (datalen != sizeof(ireq))
1559 13b2bc37 2022-10-23 stsp 		return got_error(GOT_ERR_PRIVSEP_LEN);
1560 13b2bc37 2022-10-23 stsp 	memcpy(&ireq, imsg->data, sizeof(ireq));
1561 13b2bc37 2022-10-23 stsp 
1562 1a52c9bf 2022-12-30 stsp 	if (client->pack_pipe != -1)
1563 13b2bc37 2022-10-23 stsp 		return got_error(GOT_ERR_PRIVSEP_MSG);
1564 13b2bc37 2022-10-23 stsp 
1565 1a52c9bf 2022-12-30 stsp 	client->pack_pipe = imsg->fd;
1566 13b2bc37 2022-10-23 stsp 	return NULL;
1567 13b2bc37 2022-10-23 stsp }
1568 13b2bc37 2022-10-23 stsp 
1569 13b2bc37 2022-10-23 stsp static const struct got_error *
1570 1a52c9bf 2022-12-30 stsp receive_pack_idx(struct imsg *imsg, struct gotd_imsgev *iev)
1571 13b2bc37 2022-10-23 stsp {
1572 1a52c9bf 2022-12-30 stsp 	struct repo_write_client *client = &repo_write_client;
1573 13b2bc37 2022-10-23 stsp 	struct gotd_imsg_packidx_file ireq;
1574 13b2bc37 2022-10-23 stsp 	size_t datalen;
1575 13b2bc37 2022-10-23 stsp 
1576 13b2bc37 2022-10-23 stsp 	log_debug("receving pack index output file");
1577 13b2bc37 2022-10-23 stsp 
1578 13b2bc37 2022-10-23 stsp 	if (imsg->fd == -1)
1579 13b2bc37 2022-10-23 stsp 		return got_error(GOT_ERR_PRIVSEP_NO_FD);
1580 13b2bc37 2022-10-23 stsp 
1581 13b2bc37 2022-10-23 stsp 	datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
1582 13b2bc37 2022-10-23 stsp 	if (datalen != sizeof(ireq))
1583 13b2bc37 2022-10-23 stsp 		return got_error(GOT_ERR_PRIVSEP_LEN);
1584 13b2bc37 2022-10-23 stsp 	memcpy(&ireq, imsg->data, sizeof(ireq));
1585 13b2bc37 2022-10-23 stsp 
1586 1a52c9bf 2022-12-30 stsp 	if (client->packidx_fd != -1)
1587 13b2bc37 2022-10-23 stsp 		return got_error(GOT_ERR_PRIVSEP_MSG);
1588 13b2bc37 2022-10-23 stsp 
1589 1a52c9bf 2022-12-30 stsp 	client->packidx_fd = imsg->fd;
1590 13b2bc37 2022-10-23 stsp 	return NULL;
1591 13b2bc37 2022-10-23 stsp }
1592 13b2bc37 2022-10-23 stsp 
1593 13b2bc37 2022-10-23 stsp static void
1594 ae7c1b78 2023-01-10 stsp repo_write_dispatch_session(int fd, short event, void *arg)
1595 13b2bc37 2022-10-23 stsp {
1596 13b2bc37 2022-10-23 stsp 	const struct got_error *err = NULL;
1597 13b2bc37 2022-10-23 stsp 	struct gotd_imsgev *iev = arg;
1598 13b2bc37 2022-10-23 stsp 	struct imsgbuf *ibuf = &iev->ibuf;
1599 13b2bc37 2022-10-23 stsp 	struct imsg imsg;
1600 1a52c9bf 2022-12-30 stsp 	struct repo_write_client *client = &repo_write_client;
1601 13b2bc37 2022-10-23 stsp 	ssize_t n;
1602 0ff2c315 2023-01-18 stsp 	int shut = 0, have_packfile = 0;
1603 13b2bc37 2022-10-23 stsp 
1604 13b2bc37 2022-10-23 stsp 	if (event & EV_READ) {
1605 13b2bc37 2022-10-23 stsp 		if ((n = imsg_read(ibuf)) == -1 && errno != EAGAIN)
1606 13b2bc37 2022-10-23 stsp 			fatal("imsg_read error");
1607 13b2bc37 2022-10-23 stsp 		if (n == 0)	/* Connection closed. */
1608 13b2bc37 2022-10-23 stsp 			shut = 1;
1609 13b2bc37 2022-10-23 stsp 	}
1610 13b2bc37 2022-10-23 stsp 
1611 13b2bc37 2022-10-23 stsp 	if (event & EV_WRITE) {
1612 13b2bc37 2022-10-23 stsp 		n = msgbuf_write(&ibuf->w);
1613 13b2bc37 2022-10-23 stsp 		if (n == -1 && errno != EAGAIN)
1614 13b2bc37 2022-10-23 stsp 			fatal("msgbuf_write");
1615 13b2bc37 2022-10-23 stsp 		if (n == 0)	/* Connection closed. */
1616 13b2bc37 2022-10-23 stsp 			shut = 1;
1617 13b2bc37 2022-10-23 stsp 	}
1618 13b2bc37 2022-10-23 stsp 
1619 13b2bc37 2022-10-23 stsp 	for (;;) {
1620 13b2bc37 2022-10-23 stsp 		if ((n = imsg_get(ibuf, &imsg)) == -1)
1621 13b2bc37 2022-10-23 stsp 			fatal("%s: imsg_get error", __func__);
1622 13b2bc37 2022-10-23 stsp 		if (n == 0)	/* No more messages. */
1623 13b2bc37 2022-10-23 stsp 			break;
1624 13b2bc37 2022-10-23 stsp 
1625 1a52c9bf 2022-12-30 stsp 		if (imsg.hdr.type != GOTD_IMSG_LIST_REFS_INTERNAL &&
1626 1a52c9bf 2022-12-30 stsp 		    client->id == 0) {
1627 1a52c9bf 2022-12-30 stsp 			err = got_error(GOT_ERR_PRIVSEP_MSG);
1628 1a52c9bf 2022-12-30 stsp 			break;
1629 1a52c9bf 2022-12-30 stsp 		}
1630 1a52c9bf 2022-12-30 stsp 
1631 13b2bc37 2022-10-23 stsp 		switch (imsg.hdr.type) {
1632 13b2bc37 2022-10-23 stsp 		case GOTD_IMSG_LIST_REFS_INTERNAL:
1633 1a52c9bf 2022-12-30 stsp 			err = list_refs(&imsg);
1634 13b2bc37 2022-10-23 stsp 			if (err)
1635 88f6dccd 2023-03-04 op 				log_warnx("ls-refs: %s", err->msg);
1636 13b2bc37 2022-10-23 stsp 			break;
1637 13b2bc37 2022-10-23 stsp 		case GOTD_IMSG_REF_UPDATE:
1638 1a52c9bf 2022-12-30 stsp 			err = recv_ref_update(&imsg);
1639 13b2bc37 2022-10-23 stsp 			if (err)
1640 88f6dccd 2023-03-04 op 				log_warnx("ref-update: %s", err->msg);
1641 13b2bc37 2022-10-23 stsp 			break;
1642 13b2bc37 2022-10-23 stsp 		case GOTD_IMSG_PACKFILE_PIPE:
1643 1a52c9bf 2022-12-30 stsp 			err = receive_pack_pipe(&imsg, iev);
1644 13b2bc37 2022-10-23 stsp 			if (err) {
1645 88f6dccd 2023-03-04 op 				log_warnx("receiving pack pipe: %s", err->msg);
1646 13b2bc37 2022-10-23 stsp 				break;
1647 13b2bc37 2022-10-23 stsp 			}
1648 13b2bc37 2022-10-23 stsp 			break;
1649 13b2bc37 2022-10-23 stsp 		case GOTD_IMSG_PACKIDX_FILE:
1650 1a52c9bf 2022-12-30 stsp 			err = receive_pack_idx(&imsg, iev);
1651 13b2bc37 2022-10-23 stsp 			if (err) {
1652 88f6dccd 2023-03-04 op 				log_warnx("receiving pack index: %s",
1653 88f6dccd 2023-03-04 op 				    err->msg);
1654 13b2bc37 2022-10-23 stsp 				break;
1655 13b2bc37 2022-10-23 stsp 			}
1656 13b2bc37 2022-10-23 stsp 			break;
1657 13b2bc37 2022-10-23 stsp 		case GOTD_IMSG_RECV_PACKFILE:
1658 9afa3de2 2023-04-04 stsp 			err = protect_refs_from_deletion();
1659 9afa3de2 2023-04-04 stsp 			if (err)
1660 9afa3de2 2023-04-04 stsp 				break;
1661 0ff2c315 2023-01-18 stsp 			err = recv_packfile(&have_packfile, &imsg);
1662 13b2bc37 2022-10-23 stsp 			if (err) {
1663 88f6dccd 2023-03-04 op 				log_warnx("receive packfile: %s", err->msg);
1664 13b2bc37 2022-10-23 stsp 				break;
1665 13b2bc37 2022-10-23 stsp 			}
1666 0ff2c315 2023-01-18 stsp 			if (have_packfile) {
1667 0ff2c315 2023-01-18 stsp 				err = verify_packfile();
1668 0ff2c315 2023-01-18 stsp 				if (err) {
1669 88f6dccd 2023-03-04 op 					log_warnx("verify packfile: %s",
1670 88f6dccd 2023-03-04 op 					    err->msg);
1671 0ff2c315 2023-01-18 stsp 					break;
1672 0ff2c315 2023-01-18 stsp 				}
1673 0ff2c315 2023-01-18 stsp 				err = install_packfile(iev);
1674 0ff2c315 2023-01-18 stsp 				if (err) {
1675 88f6dccd 2023-03-04 op 					log_warnx("install packfile: %s",
1676 88f6dccd 2023-03-04 op 					    err->msg);
1677 0ff2c315 2023-01-18 stsp 					break;
1678 0ff2c315 2023-01-18 stsp 				}
1679 13b2bc37 2022-10-23 stsp 			}
1680 1a52c9bf 2022-12-30 stsp 			err = update_refs(iev);
1681 13b2bc37 2022-10-23 stsp 			if (err) {
1682 88f6dccd 2023-03-04 op 				log_warnx("update refs: %s", err->msg);
1683 13b2bc37 2022-10-23 stsp 			}
1684 13b2bc37 2022-10-23 stsp 			break;
1685 ae7c1b78 2023-01-10 stsp 		default:
1686 88f6dccd 2023-03-04 op 			log_debug("unexpected imsg %d", imsg.hdr.type);
1687 ae7c1b78 2023-01-10 stsp 			break;
1688 ae7c1b78 2023-01-10 stsp 		}
1689 ae7c1b78 2023-01-10 stsp 
1690 ae7c1b78 2023-01-10 stsp 		imsg_free(&imsg);
1691 ae7c1b78 2023-01-10 stsp 	}
1692 ae7c1b78 2023-01-10 stsp 
1693 ae7c1b78 2023-01-10 stsp 	if (!shut && check_cancelled(NULL) == NULL) {
1694 ae7c1b78 2023-01-10 stsp 		if (err &&
1695 ae7c1b78 2023-01-10 stsp 		    gotd_imsg_send_error_event(iev, PROC_REPO_WRITE,
1696 ae7c1b78 2023-01-10 stsp 		        client->id, err) == -1) {
1697 ae7c1b78 2023-01-10 stsp 			log_warnx("could not send error to parent: %s",
1698 ae7c1b78 2023-01-10 stsp 			    err->msg);
1699 ae7c1b78 2023-01-10 stsp 		}
1700 ae7c1b78 2023-01-10 stsp 		gotd_imsg_event_add(iev);
1701 ae7c1b78 2023-01-10 stsp 	} else {
1702 ae7c1b78 2023-01-10 stsp 		/* This pipe is dead. Remove its event handler */
1703 ae7c1b78 2023-01-10 stsp 		event_del(&iev->ev);
1704 ae7c1b78 2023-01-10 stsp 		event_loopexit(NULL);
1705 ae7c1b78 2023-01-10 stsp 	}
1706 ae7c1b78 2023-01-10 stsp }
1707 ae7c1b78 2023-01-10 stsp 
1708 ae7c1b78 2023-01-10 stsp static const struct got_error *
1709 ae7c1b78 2023-01-10 stsp recv_connect(struct imsg *imsg)
1710 ae7c1b78 2023-01-10 stsp {
1711 ae7c1b78 2023-01-10 stsp 	struct gotd_imsgev *iev = &repo_write.session_iev;
1712 ae7c1b78 2023-01-10 stsp 	size_t datalen;
1713 ae7c1b78 2023-01-10 stsp 
1714 ae7c1b78 2023-01-10 stsp 	datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
1715 ae7c1b78 2023-01-10 stsp 	if (datalen != 0)
1716 ae7c1b78 2023-01-10 stsp 		return got_error(GOT_ERR_PRIVSEP_LEN);
1717 ae7c1b78 2023-01-10 stsp 	if (imsg->fd == -1)
1718 ae7c1b78 2023-01-10 stsp 		return got_error(GOT_ERR_PRIVSEP_NO_FD);
1719 ae7c1b78 2023-01-10 stsp 
1720 ae7c1b78 2023-01-10 stsp 	if (repo_write.session_fd != -1)
1721 ae7c1b78 2023-01-10 stsp 		return got_error(GOT_ERR_PRIVSEP_MSG);
1722 ae7c1b78 2023-01-10 stsp 
1723 ae7c1b78 2023-01-10 stsp 	repo_write.session_fd = imsg->fd;
1724 ae7c1b78 2023-01-10 stsp 
1725 ae7c1b78 2023-01-10 stsp 	imsg_init(&iev->ibuf, repo_write.session_fd);
1726 ae7c1b78 2023-01-10 stsp 	iev->handler = repo_write_dispatch_session;
1727 ae7c1b78 2023-01-10 stsp 	iev->events = EV_READ;
1728 ae7c1b78 2023-01-10 stsp 	iev->handler_arg = NULL;
1729 ae7c1b78 2023-01-10 stsp 	event_set(&iev->ev, iev->ibuf.fd, EV_READ,
1730 ae7c1b78 2023-01-10 stsp 	    repo_write_dispatch_session, iev);
1731 ae7c1b78 2023-01-10 stsp 	gotd_imsg_event_add(iev);
1732 ae7c1b78 2023-01-10 stsp 
1733 ae7c1b78 2023-01-10 stsp 	return NULL;
1734 ae7c1b78 2023-01-10 stsp }
1735 ae7c1b78 2023-01-10 stsp 
1736 ae7c1b78 2023-01-10 stsp static void
1737 ae7c1b78 2023-01-10 stsp repo_write_dispatch(int fd, short event, void *arg)
1738 ae7c1b78 2023-01-10 stsp {
1739 ae7c1b78 2023-01-10 stsp 	const struct got_error *err = NULL;
1740 ae7c1b78 2023-01-10 stsp 	struct gotd_imsgev *iev = arg;
1741 ae7c1b78 2023-01-10 stsp 	struct imsgbuf *ibuf = &iev->ibuf;
1742 ae7c1b78 2023-01-10 stsp 	struct imsg imsg;
1743 ae7c1b78 2023-01-10 stsp 	ssize_t n;
1744 ae7c1b78 2023-01-10 stsp 	int shut = 0;
1745 ae7c1b78 2023-01-10 stsp 	struct repo_write_client *client = &repo_write_client;
1746 ae7c1b78 2023-01-10 stsp 
1747 ae7c1b78 2023-01-10 stsp 	if (event & EV_READ) {
1748 ae7c1b78 2023-01-10 stsp 		if ((n = imsg_read(ibuf)) == -1 && errno != EAGAIN)
1749 ae7c1b78 2023-01-10 stsp 			fatal("imsg_read error");
1750 ae7c1b78 2023-01-10 stsp 		if (n == 0)	/* Connection closed. */
1751 1a52c9bf 2022-12-30 stsp 			shut = 1;
1752 ae7c1b78 2023-01-10 stsp 	}
1753 ae7c1b78 2023-01-10 stsp 
1754 ae7c1b78 2023-01-10 stsp 	if (event & EV_WRITE) {
1755 ae7c1b78 2023-01-10 stsp 		n = msgbuf_write(&ibuf->w);
1756 ae7c1b78 2023-01-10 stsp 		if (n == -1 && errno != EAGAIN)
1757 ae7c1b78 2023-01-10 stsp 			fatal("msgbuf_write");
1758 ae7c1b78 2023-01-10 stsp 		if (n == 0)	/* Connection closed. */
1759 ae7c1b78 2023-01-10 stsp 			shut = 1;
1760 ae7c1b78 2023-01-10 stsp 	}
1761 ae7c1b78 2023-01-10 stsp 
1762 ae7c1b78 2023-01-10 stsp 	while (err == NULL && check_cancelled(NULL) == NULL) {
1763 ae7c1b78 2023-01-10 stsp 		if ((n = imsg_get(ibuf, &imsg)) == -1)
1764 ae7c1b78 2023-01-10 stsp 			fatal("%s: imsg_get", __func__);
1765 ae7c1b78 2023-01-10 stsp 		if (n == 0)	/* No more messages. */
1766 13b2bc37 2022-10-23 stsp 			break;
1767 ae7c1b78 2023-01-10 stsp 
1768 ae7c1b78 2023-01-10 stsp 		switch (imsg.hdr.type) {
1769 ae7c1b78 2023-01-10 stsp 		case GOTD_IMSG_CONNECT_REPO_CHILD:
1770 ae7c1b78 2023-01-10 stsp 			err = recv_connect(&imsg);
1771 ae7c1b78 2023-01-10 stsp 			break;
1772 13b2bc37 2022-10-23 stsp 		default:
1773 88f6dccd 2023-03-04 op 			log_debug("unexpected imsg %d", imsg.hdr.type);
1774 13b2bc37 2022-10-23 stsp 			break;
1775 13b2bc37 2022-10-23 stsp 		}
1776 13b2bc37 2022-10-23 stsp 
1777 13b2bc37 2022-10-23 stsp 		imsg_free(&imsg);
1778 13b2bc37 2022-10-23 stsp 	}
1779 13b2bc37 2022-10-23 stsp 
1780 13b2bc37 2022-10-23 stsp 	if (!shut && check_cancelled(NULL) == NULL) {
1781 13b2bc37 2022-10-23 stsp 		if (err &&
1782 13b2bc37 2022-10-23 stsp 		    gotd_imsg_send_error_event(iev, PROC_REPO_WRITE,
1783 1a52c9bf 2022-12-30 stsp 		        client->id, err) == -1) {
1784 13b2bc37 2022-10-23 stsp 			log_warnx("could not send error to parent: %s",
1785 13b2bc37 2022-10-23 stsp 			    err->msg);
1786 13b2bc37 2022-10-23 stsp 		}
1787 13b2bc37 2022-10-23 stsp 		gotd_imsg_event_add(iev);
1788 13b2bc37 2022-10-23 stsp 	} else {
1789 13b2bc37 2022-10-23 stsp 		/* This pipe is dead. Remove its event handler */
1790 13b2bc37 2022-10-23 stsp 		event_del(&iev->ev);
1791 13b2bc37 2022-10-23 stsp 		event_loopexit(NULL);
1792 13b2bc37 2022-10-23 stsp 	}
1793 13b2bc37 2022-10-23 stsp }
1794 13b2bc37 2022-10-23 stsp 
1795 13b2bc37 2022-10-23 stsp void
1796 eec68231 2022-12-14 stsp repo_write_main(const char *title, const char *repo_path,
1797 9afa3de2 2023-04-04 stsp     int *pack_fds, int *temp_fds,
1798 9afa3de2 2023-04-04 stsp     struct got_pathlist_head *protected_tag_namespaces,
1799 9afa3de2 2023-04-04 stsp     struct got_pathlist_head *protected_branch_namespaces,
1800 9afa3de2 2023-04-04 stsp     struct got_pathlist_head *protected_branches)
1801 13b2bc37 2022-10-23 stsp {
1802 13b2bc37 2022-10-23 stsp 	const struct got_error *err = NULL;
1803 363c6230 2023-02-09 stsp 	struct repo_write_client *client = &repo_write_client;
1804 13b2bc37 2022-10-23 stsp 	struct gotd_imsgev iev;
1805 13b2bc37 2022-10-23 stsp 
1806 363c6230 2023-02-09 stsp 	client->fd = -1;
1807 363c6230 2023-02-09 stsp 	client->pack_pipe = -1;
1808 363c6230 2023-02-09 stsp 	client->packidx_fd = -1;
1809 363c6230 2023-02-09 stsp 	client->pack.fd = -1;
1810 363c6230 2023-02-09 stsp 
1811 13b2bc37 2022-10-23 stsp 	repo_write.title = title;
1812 13b2bc37 2022-10-23 stsp 	repo_write.pid = getpid();
1813 13b2bc37 2022-10-23 stsp 	repo_write.pack_fds = pack_fds;
1814 13b2bc37 2022-10-23 stsp 	repo_write.temp_fds = temp_fds;
1815 ae7c1b78 2023-01-10 stsp 	repo_write.session_fd = -1;
1816 ae7c1b78 2023-01-10 stsp 	repo_write.session_iev.ibuf.fd = -1;
1817 9afa3de2 2023-04-04 stsp 	repo_write.protected_tag_namespaces = protected_tag_namespaces;
1818 9afa3de2 2023-04-04 stsp 	repo_write.protected_branch_namespaces = protected_branch_namespaces;
1819 9afa3de2 2023-04-04 stsp 	repo_write.protected_branches = protected_branches;
1820 13b2bc37 2022-10-23 stsp 
1821 1a52c9bf 2022-12-30 stsp 	STAILQ_INIT(&repo_write_client.ref_updates);
1822 13b2bc37 2022-10-23 stsp 
1823 eec68231 2022-12-14 stsp 	err = got_repo_open(&repo_write.repo, repo_path, NULL, pack_fds);
1824 13b2bc37 2022-10-23 stsp 	if (err)
1825 13b2bc37 2022-10-23 stsp 		goto done;
1826 13b2bc37 2022-10-23 stsp 	if (!got_repo_is_bare(repo_write.repo)) {
1827 13b2bc37 2022-10-23 stsp 		err = got_error_msg(GOT_ERR_NOT_GIT_REPO,
1828 13b2bc37 2022-10-23 stsp 		    "bare git repository required");
1829 13b2bc37 2022-10-23 stsp 		goto done;
1830 13b2bc37 2022-10-23 stsp 	}
1831 13b2bc37 2022-10-23 stsp 
1832 13b2bc37 2022-10-23 stsp 	got_repo_temp_fds_set(repo_write.repo, temp_fds);
1833 13b2bc37 2022-10-23 stsp 
1834 13b2bc37 2022-10-23 stsp 	signal(SIGINT, catch_sigint);
1835 13b2bc37 2022-10-23 stsp 	signal(SIGTERM, catch_sigterm);
1836 13b2bc37 2022-10-23 stsp 	signal(SIGPIPE, SIG_IGN);
1837 13b2bc37 2022-10-23 stsp 	signal(SIGHUP, SIG_IGN);
1838 13b2bc37 2022-10-23 stsp 
1839 8c6fc146 2022-11-17 stsp 	imsg_init(&iev.ibuf, GOTD_FILENO_MSG_PIPE);
1840 13b2bc37 2022-10-23 stsp 	iev.handler = repo_write_dispatch;
1841 13b2bc37 2022-10-23 stsp 	iev.events = EV_READ;
1842 13b2bc37 2022-10-23 stsp 	iev.handler_arg = NULL;
1843 13b2bc37 2022-10-23 stsp 	event_set(&iev.ev, iev.ibuf.fd, EV_READ, repo_write_dispatch, &iev);
1844 b50a2b46 2022-12-29 stsp 	if (gotd_imsg_compose_event(&iev, GOTD_IMSG_REPO_CHILD_READY,
1845 b50a2b46 2022-12-29 stsp 	    PROC_REPO_WRITE, -1, NULL, 0) == -1) {
1846 b50a2b46 2022-12-29 stsp 		err = got_error_from_errno("imsg compose REPO_CHILD_READY");
1847 13b2bc37 2022-10-23 stsp 		goto done;
1848 13b2bc37 2022-10-23 stsp 	}
1849 13b2bc37 2022-10-23 stsp 
1850 13b2bc37 2022-10-23 stsp 	event_dispatch();
1851 13b2bc37 2022-10-23 stsp done:
1852 13b2bc37 2022-10-23 stsp 	if (err)
1853 13b2bc37 2022-10-23 stsp 		log_warnx("%s: %s", title, err->msg);
1854 13b2bc37 2022-10-23 stsp 	repo_write_shutdown();
1855 13b2bc37 2022-10-23 stsp }
1856 13b2bc37 2022-10-23 stsp 
1857 13b2bc37 2022-10-23 stsp void
1858 13b2bc37 2022-10-23 stsp repo_write_shutdown(void)
1859 13b2bc37 2022-10-23 stsp {
1860 363c6230 2023-02-09 stsp 	struct repo_write_client *client = &repo_write_client;
1861 363c6230 2023-02-09 stsp 	struct gotd_ref_update *ref_update;
1862 363c6230 2023-02-09 stsp 
1863 4f8a1204 2023-03-04 op 	log_debug("shutting down");
1864 363c6230 2023-02-09 stsp 
1865 363c6230 2023-02-09 stsp 	while (!STAILQ_EMPTY(&client->ref_updates)) {
1866 363c6230 2023-02-09 stsp 		ref_update = STAILQ_FIRST(&client->ref_updates);
1867 363c6230 2023-02-09 stsp 		STAILQ_REMOVE_HEAD(&client->ref_updates, entry);
1868 363c6230 2023-02-09 stsp 		got_ref_close(ref_update->ref);
1869 363c6230 2023-02-09 stsp 		free(ref_update);
1870 363c6230 2023-02-09 stsp 	}
1871 363c6230 2023-02-09 stsp 
1872 363c6230 2023-02-09 stsp 	got_pack_close(&client->pack);
1873 363c6230 2023-02-09 stsp 	if (client->fd != -1)
1874 363c6230 2023-02-09 stsp 		close(client->fd);
1875 363c6230 2023-02-09 stsp 	if (client->pack_pipe != -1)
1876 363c6230 2023-02-09 stsp 		close(client->pack_pipe);
1877 363c6230 2023-02-09 stsp 	if (client->packidx_fd != -1)
1878 363c6230 2023-02-09 stsp 		close(client->packidx_fd);
1879 363c6230 2023-02-09 stsp 
1880 13b2bc37 2022-10-23 stsp 	if (repo_write.repo)
1881 13b2bc37 2022-10-23 stsp 		got_repo_close(repo_write.repo);
1882 13b2bc37 2022-10-23 stsp 	got_repo_pack_fds_close(repo_write.pack_fds);
1883 8193d041 2022-10-30 stsp 	got_repo_temp_fds_close(repo_write.temp_fds);
1884 ae7c1b78 2023-01-10 stsp 	if (repo_write.session_fd != -1)
1885 ae7c1b78 2023-01-10 stsp 		close(repo_write.session_fd);
1886 13b2bc37 2022-10-23 stsp 	exit(0);
1887 13b2bc37 2022-10-23 stsp }