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 13b2bc37 2022-10-23 stsp #include <unistd.h>
  34 13b2bc37 2022-10-23 stsp #include <zlib.h>
  35 13b2bc37 2022-10-23 stsp 
  36 13b2bc37 2022-10-23 stsp #include "buf.h"
  37 13b2bc37 2022-10-23 stsp 
  38 13b2bc37 2022-10-23 stsp #include "got_error.h"
  39 13b2bc37 2022-10-23 stsp #include "got_repository.h"
  40 13b2bc37 2022-10-23 stsp #include "got_object.h"
  41 13b2bc37 2022-10-23 stsp #include "got_reference.h"
  42 13b2bc37 2022-10-23 stsp #include "got_path.h"
  43 13b2bc37 2022-10-23 stsp 
  44 13b2bc37 2022-10-23 stsp #include "got_lib_delta.h"
  45 13b2bc37 2022-10-23 stsp #include "got_lib_delta_cache.h"
  46 13b2bc37 2022-10-23 stsp #include "got_lib_object.h"
  47 13b2bc37 2022-10-23 stsp #include "got_lib_object_cache.h"
  48 13b2bc37 2022-10-23 stsp #include "got_lib_ratelimit.h"
  49 13b2bc37 2022-10-23 stsp #include "got_lib_pack.h"
  50 13b2bc37 2022-10-23 stsp #include "got_lib_pack_index.h"
  51 13b2bc37 2022-10-23 stsp #include "got_lib_repository.h"
  52 13b2bc37 2022-10-23 stsp #include "got_lib_poll.h"
  53 13b2bc37 2022-10-23 stsp 
  54 13b2bc37 2022-10-23 stsp #include "got_lib_sha1.h" /* XXX temp include for debugging */
  55 13b2bc37 2022-10-23 stsp 
  56 13b2bc37 2022-10-23 stsp #include "log.h"
  57 13b2bc37 2022-10-23 stsp #include "gotd.h"
  58 13b2bc37 2022-10-23 stsp #include "repo_write.h"
  59 13b2bc37 2022-10-23 stsp 
  60 13b2bc37 2022-10-23 stsp #ifndef nitems
  61 13b2bc37 2022-10-23 stsp #define nitems(_a)	(sizeof((_a)) / sizeof((_a)[0]))
  62 13b2bc37 2022-10-23 stsp #endif
  63 13b2bc37 2022-10-23 stsp 
  64 13b2bc37 2022-10-23 stsp static struct repo_write {
  65 13b2bc37 2022-10-23 stsp 	pid_t pid;
  66 13b2bc37 2022-10-23 stsp 	const char *title;
  67 13b2bc37 2022-10-23 stsp 	struct got_repository *repo;
  68 13b2bc37 2022-10-23 stsp 	int *pack_fds;
  69 13b2bc37 2022-10-23 stsp 	int *temp_fds;
  70 ae7c1b78 2023-01-10 stsp 	int session_fd;
  71 ae7c1b78 2023-01-10 stsp 	struct gotd_imsgev session_iev;
  72 13b2bc37 2022-10-23 stsp } repo_write;
  73 13b2bc37 2022-10-23 stsp 
  74 13b2bc37 2022-10-23 stsp struct gotd_ref_update {
  75 13b2bc37 2022-10-23 stsp 	STAILQ_ENTRY(gotd_ref_update) entry;
  76 13b2bc37 2022-10-23 stsp 	struct got_reference *ref;
  77 13b2bc37 2022-10-23 stsp 	int ref_is_new;
  78 9a8e357c 2023-01-28 op 	int delete_ref;
  79 13b2bc37 2022-10-23 stsp 	struct got_object_id old_id;
  80 13b2bc37 2022-10-23 stsp 	struct got_object_id new_id;
  81 13b2bc37 2022-10-23 stsp };
  82 13b2bc37 2022-10-23 stsp STAILQ_HEAD(gotd_ref_updates, gotd_ref_update);
  83 13b2bc37 2022-10-23 stsp 
  84 1a52c9bf 2022-12-30 stsp static struct repo_write_client {
  85 13b2bc37 2022-10-23 stsp 	uint32_t			 id;
  86 13b2bc37 2022-10-23 stsp 	int				 fd;
  87 7fec5f4a 2022-10-28 stsp 	int				 pack_pipe;
  88 13b2bc37 2022-10-23 stsp 	struct got_pack			 pack;
  89 13b2bc37 2022-10-23 stsp 	uint8_t				 pack_sha1[SHA1_DIGEST_LENGTH];
  90 13b2bc37 2022-10-23 stsp 	int				 packidx_fd;
  91 13b2bc37 2022-10-23 stsp 	struct gotd_ref_updates		 ref_updates;
  92 13b2bc37 2022-10-23 stsp 	int				 nref_updates;
  93 9a8e357c 2023-01-28 op 	int				 nref_del;
  94 0ff2c315 2023-01-18 stsp 	int				 nref_new;
  95 1a52c9bf 2022-12-30 stsp } repo_write_client;
  96 13b2bc37 2022-10-23 stsp 
  97 13b2bc37 2022-10-23 stsp static volatile sig_atomic_t sigint_received;
  98 13b2bc37 2022-10-23 stsp static volatile sig_atomic_t sigterm_received;
  99 13b2bc37 2022-10-23 stsp 
 100 13b2bc37 2022-10-23 stsp static void
 101 13b2bc37 2022-10-23 stsp catch_sigint(int signo)
 102 13b2bc37 2022-10-23 stsp {
 103 13b2bc37 2022-10-23 stsp 	sigint_received = 1;
 104 13b2bc37 2022-10-23 stsp }
 105 13b2bc37 2022-10-23 stsp 
 106 13b2bc37 2022-10-23 stsp static void
 107 13b2bc37 2022-10-23 stsp catch_sigterm(int signo)
 108 13b2bc37 2022-10-23 stsp {
 109 13b2bc37 2022-10-23 stsp 	sigterm_received = 1;
 110 13b2bc37 2022-10-23 stsp }
 111 13b2bc37 2022-10-23 stsp 
 112 13b2bc37 2022-10-23 stsp static const struct got_error *
 113 13b2bc37 2022-10-23 stsp check_cancelled(void *arg)
 114 13b2bc37 2022-10-23 stsp {
 115 13b2bc37 2022-10-23 stsp 	if (sigint_received || sigterm_received)
 116 13b2bc37 2022-10-23 stsp 		return got_error(GOT_ERR_CANCELLED);
 117 13b2bc37 2022-10-23 stsp 
 118 13b2bc37 2022-10-23 stsp 	return NULL;
 119 13b2bc37 2022-10-23 stsp }
 120 13b2bc37 2022-10-23 stsp 
 121 13b2bc37 2022-10-23 stsp static const struct got_error *
 122 13b2bc37 2022-10-23 stsp send_peeled_tag_ref(struct got_reference *ref, struct got_object *obj,
 123 13b2bc37 2022-10-23 stsp     struct imsgbuf *ibuf)
 124 13b2bc37 2022-10-23 stsp {
 125 13b2bc37 2022-10-23 stsp 	const struct got_error *err = NULL;
 126 13b2bc37 2022-10-23 stsp 	struct got_tag_object *tag;
 127 13b2bc37 2022-10-23 stsp 	size_t namelen, len;
 128 13b2bc37 2022-10-23 stsp 	char *peeled_refname = NULL;
 129 13b2bc37 2022-10-23 stsp 	struct got_object_id *id;
 130 13b2bc37 2022-10-23 stsp 	struct ibuf *wbuf;
 131 13b2bc37 2022-10-23 stsp 
 132 13b2bc37 2022-10-23 stsp 	err = got_object_tag_open(&tag, repo_write.repo, obj);
 133 13b2bc37 2022-10-23 stsp 	if (err)
 134 13b2bc37 2022-10-23 stsp 		return err;
 135 13b2bc37 2022-10-23 stsp 
 136 13b2bc37 2022-10-23 stsp 	if (asprintf(&peeled_refname, "%s^{}", got_ref_get_name(ref)) == -1) {
 137 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("asprintf");
 138 13b2bc37 2022-10-23 stsp 		goto done;
 139 13b2bc37 2022-10-23 stsp 	}
 140 13b2bc37 2022-10-23 stsp 
 141 13b2bc37 2022-10-23 stsp 	id = got_object_tag_get_object_id(tag);
 142 13b2bc37 2022-10-23 stsp 	namelen = strlen(peeled_refname);
 143 13b2bc37 2022-10-23 stsp 
 144 13b2bc37 2022-10-23 stsp 	len = sizeof(struct gotd_imsg_ref) + namelen;
 145 13b2bc37 2022-10-23 stsp 	if (len > MAX_IMSGSIZE - IMSG_HEADER_SIZE) {
 146 13b2bc37 2022-10-23 stsp 		err = got_error(GOT_ERR_NO_SPACE);
 147 13b2bc37 2022-10-23 stsp 		goto done;
 148 13b2bc37 2022-10-23 stsp 	}
 149 13b2bc37 2022-10-23 stsp 
 150 13b2bc37 2022-10-23 stsp 	wbuf = imsg_create(ibuf, GOTD_IMSG_REF, PROC_REPO_WRITE,
 151 13b2bc37 2022-10-23 stsp 	    repo_write.pid, len);
 152 13b2bc37 2022-10-23 stsp 	if (wbuf == NULL) {
 153 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("imsg_create REF");
 154 13b2bc37 2022-10-23 stsp 		goto done;
 155 13b2bc37 2022-10-23 stsp 	}
 156 13b2bc37 2022-10-23 stsp 
 157 13b2bc37 2022-10-23 stsp 	/* Keep in sync with struct gotd_imsg_ref definition. */
 158 13b2bc37 2022-10-23 stsp 	if (imsg_add(wbuf, id->sha1, SHA1_DIGEST_LENGTH) == -1) {
 159 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("imsg_add REF");
 160 13b2bc37 2022-10-23 stsp 		goto done;
 161 13b2bc37 2022-10-23 stsp 	}
 162 13b2bc37 2022-10-23 stsp 	if (imsg_add(wbuf, &namelen, sizeof(namelen)) == -1) {
 163 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("imsg_add REF");
 164 13b2bc37 2022-10-23 stsp 		goto done;
 165 13b2bc37 2022-10-23 stsp 	}
 166 13b2bc37 2022-10-23 stsp 	if (imsg_add(wbuf, peeled_refname, namelen) == -1) {
 167 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("imsg_add REF");
 168 13b2bc37 2022-10-23 stsp 		goto done;
 169 13b2bc37 2022-10-23 stsp 	}
 170 13b2bc37 2022-10-23 stsp 
 171 13b2bc37 2022-10-23 stsp 	wbuf->fd = -1;
 172 13b2bc37 2022-10-23 stsp 	imsg_close(ibuf, wbuf);
 173 13b2bc37 2022-10-23 stsp done:
 174 13b2bc37 2022-10-23 stsp 	got_object_tag_close(tag);
 175 13b2bc37 2022-10-23 stsp 	return err;
 176 13b2bc37 2022-10-23 stsp }
 177 13b2bc37 2022-10-23 stsp 
 178 13b2bc37 2022-10-23 stsp static const struct got_error *
 179 13b2bc37 2022-10-23 stsp send_ref(struct got_reference *ref, struct imsgbuf *ibuf)
 180 13b2bc37 2022-10-23 stsp {
 181 13b2bc37 2022-10-23 stsp 	const struct got_error *err;
 182 13b2bc37 2022-10-23 stsp 	const char *refname = got_ref_get_name(ref);
 183 13b2bc37 2022-10-23 stsp 	size_t namelen;
 184 13b2bc37 2022-10-23 stsp 	struct got_object_id *id = NULL;
 185 13b2bc37 2022-10-23 stsp 	struct got_object *obj = NULL;
 186 13b2bc37 2022-10-23 stsp 	size_t len;
 187 13b2bc37 2022-10-23 stsp 	struct ibuf *wbuf;
 188 13b2bc37 2022-10-23 stsp 
 189 13b2bc37 2022-10-23 stsp 	namelen = strlen(refname);
 190 13b2bc37 2022-10-23 stsp 
 191 13b2bc37 2022-10-23 stsp 	len = sizeof(struct gotd_imsg_ref) + namelen;
 192 13b2bc37 2022-10-23 stsp 	if (len > MAX_IMSGSIZE - IMSG_HEADER_SIZE)
 193 13b2bc37 2022-10-23 stsp 		return got_error(GOT_ERR_NO_SPACE);
 194 13b2bc37 2022-10-23 stsp 
 195 13b2bc37 2022-10-23 stsp 	err = got_ref_resolve(&id, repo_write.repo, ref);
 196 13b2bc37 2022-10-23 stsp 	if (err)
 197 13b2bc37 2022-10-23 stsp 		return err;
 198 13b2bc37 2022-10-23 stsp 
 199 13b2bc37 2022-10-23 stsp 	wbuf = imsg_create(ibuf, GOTD_IMSG_REF, PROC_REPO_WRITE,
 200 13b2bc37 2022-10-23 stsp 	    repo_write.pid, len);
 201 13b2bc37 2022-10-23 stsp 	if (wbuf == NULL) {
 202 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("imsg_create REF");
 203 13b2bc37 2022-10-23 stsp 		goto done;
 204 13b2bc37 2022-10-23 stsp 	}
 205 13b2bc37 2022-10-23 stsp 
 206 13b2bc37 2022-10-23 stsp 	/* Keep in sync with struct gotd_imsg_ref definition. */
 207 13b2bc37 2022-10-23 stsp 	if (imsg_add(wbuf, id->sha1, SHA1_DIGEST_LENGTH) == -1)
 208 13b2bc37 2022-10-23 stsp 		return got_error_from_errno("imsg_add REF");
 209 13b2bc37 2022-10-23 stsp 	if (imsg_add(wbuf, &namelen, sizeof(namelen)) == -1)
 210 13b2bc37 2022-10-23 stsp 		return got_error_from_errno("imsg_add REF");
 211 13b2bc37 2022-10-23 stsp 	if (imsg_add(wbuf, refname, namelen) == -1)
 212 13b2bc37 2022-10-23 stsp 		return got_error_from_errno("imsg_add REF");
 213 13b2bc37 2022-10-23 stsp 
 214 13b2bc37 2022-10-23 stsp 	wbuf->fd = -1;
 215 13b2bc37 2022-10-23 stsp 	imsg_close(ibuf, wbuf);
 216 13b2bc37 2022-10-23 stsp 
 217 13b2bc37 2022-10-23 stsp 	err = got_object_open(&obj, repo_write.repo, id);
 218 13b2bc37 2022-10-23 stsp 	if (err)
 219 13b2bc37 2022-10-23 stsp 		goto done;
 220 13b2bc37 2022-10-23 stsp 	if (obj->type == GOT_OBJ_TYPE_TAG)
 221 13b2bc37 2022-10-23 stsp 		err = send_peeled_tag_ref(ref, obj, ibuf);
 222 13b2bc37 2022-10-23 stsp done:
 223 13b2bc37 2022-10-23 stsp 	if (obj)
 224 13b2bc37 2022-10-23 stsp 		got_object_close(obj);
 225 13b2bc37 2022-10-23 stsp 	free(id);
 226 13b2bc37 2022-10-23 stsp 	return err;
 227 13b2bc37 2022-10-23 stsp }
 228 13b2bc37 2022-10-23 stsp 
 229 13b2bc37 2022-10-23 stsp static const struct got_error *
 230 1a52c9bf 2022-12-30 stsp list_refs(struct imsg *imsg)
 231 13b2bc37 2022-10-23 stsp {
 232 13b2bc37 2022-10-23 stsp 	const struct got_error *err;
 233 1a52c9bf 2022-12-30 stsp 	struct repo_write_client *client = &repo_write_client;
 234 13b2bc37 2022-10-23 stsp 	struct got_reflist_head refs;
 235 13b2bc37 2022-10-23 stsp 	struct got_reflist_entry *re;
 236 13b2bc37 2022-10-23 stsp 	struct gotd_imsg_list_refs_internal ireq;
 237 13b2bc37 2022-10-23 stsp 	size_t datalen;
 238 13b2bc37 2022-10-23 stsp 	struct gotd_imsg_reflist irefs;
 239 13b2bc37 2022-10-23 stsp 	struct imsgbuf ibuf;
 240 13b2bc37 2022-10-23 stsp 	int client_fd = imsg->fd;
 241 13b2bc37 2022-10-23 stsp 
 242 13b2bc37 2022-10-23 stsp 	TAILQ_INIT(&refs);
 243 13b2bc37 2022-10-23 stsp 
 244 13b2bc37 2022-10-23 stsp 	if (client_fd == -1)
 245 13b2bc37 2022-10-23 stsp 		return got_error(GOT_ERR_PRIVSEP_NO_FD);
 246 13b2bc37 2022-10-23 stsp 
 247 13b2bc37 2022-10-23 stsp 	datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
 248 13b2bc37 2022-10-23 stsp 	if (datalen != sizeof(ireq))
 249 13b2bc37 2022-10-23 stsp 		return got_error(GOT_ERR_PRIVSEP_LEN);
 250 13b2bc37 2022-10-23 stsp 	memcpy(&ireq, imsg->data, sizeof(ireq));
 251 13b2bc37 2022-10-23 stsp 
 252 1a52c9bf 2022-12-30 stsp 	if (ireq.client_id == 0)
 253 1a52c9bf 2022-12-30 stsp 		return got_error(GOT_ERR_CLIENT_ID);
 254 1a52c9bf 2022-12-30 stsp 	if (client->id != 0) {
 255 1a52c9bf 2022-12-30 stsp 		return got_error_msg(GOT_ERR_CLIENT_ID,
 256 1a52c9bf 2022-12-30 stsp 		    "duplicate list-refs request");
 257 1a52c9bf 2022-12-30 stsp 	}
 258 1a52c9bf 2022-12-30 stsp 	client->id = ireq.client_id;
 259 1a52c9bf 2022-12-30 stsp 	client->fd = client_fd;
 260 1a52c9bf 2022-12-30 stsp 	client->pack_pipe = -1;
 261 1a52c9bf 2022-12-30 stsp 	client->packidx_fd = -1;
 262 1a52c9bf 2022-12-30 stsp 	client->nref_updates = 0;
 263 9a8e357c 2023-01-28 op 	client->nref_del = 0;
 264 0ff2c315 2023-01-18 stsp 	client->nref_new = 0;
 265 13b2bc37 2022-10-23 stsp 
 266 13b2bc37 2022-10-23 stsp 	imsg_init(&ibuf, client_fd);
 267 13b2bc37 2022-10-23 stsp 
 268 13b2bc37 2022-10-23 stsp 	err = got_ref_list(&refs, repo_write.repo, "",
 269 13b2bc37 2022-10-23 stsp 	    got_ref_cmp_by_name, NULL);
 270 13b2bc37 2022-10-23 stsp 	if (err)
 271 13b2bc37 2022-10-23 stsp 		return err;
 272 13b2bc37 2022-10-23 stsp 
 273 13b2bc37 2022-10-23 stsp 	memset(&irefs, 0, sizeof(irefs));
 274 13b2bc37 2022-10-23 stsp 	TAILQ_FOREACH(re, &refs, entry) {
 275 13b2bc37 2022-10-23 stsp 		struct got_object_id *id;
 276 13b2bc37 2022-10-23 stsp 		int obj_type;
 277 13b2bc37 2022-10-23 stsp 
 278 13b2bc37 2022-10-23 stsp 		if (got_ref_is_symbolic(re->ref))
 279 13b2bc37 2022-10-23 stsp 			continue;
 280 13b2bc37 2022-10-23 stsp 
 281 13b2bc37 2022-10-23 stsp 		irefs.nrefs++;
 282 13b2bc37 2022-10-23 stsp 
 283 13b2bc37 2022-10-23 stsp 		/* Account for a peeled tag refs. */
 284 13b2bc37 2022-10-23 stsp 		err = got_ref_resolve(&id, repo_write.repo, re->ref);
 285 13b2bc37 2022-10-23 stsp 		if (err)
 286 13b2bc37 2022-10-23 stsp 			goto done;
 287 e26970cc 2023-01-10 op 		err = got_object_get_type(&obj_type, repo_write.repo, id);
 288 13b2bc37 2022-10-23 stsp 		free(id);
 289 13b2bc37 2022-10-23 stsp 		if (err)
 290 13b2bc37 2022-10-23 stsp 			goto done;
 291 13b2bc37 2022-10-23 stsp 		if (obj_type == GOT_OBJ_TYPE_TAG)
 292 13b2bc37 2022-10-23 stsp 			irefs.nrefs++;
 293 13b2bc37 2022-10-23 stsp 	}
 294 13b2bc37 2022-10-23 stsp 
 295 13b2bc37 2022-10-23 stsp 	if (imsg_compose(&ibuf, GOTD_IMSG_REFLIST, PROC_REPO_WRITE,
 296 13b2bc37 2022-10-23 stsp 	    repo_write.pid, -1, &irefs, sizeof(irefs)) == -1) {
 297 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("imsg_compose REFLIST");
 298 13b2bc37 2022-10-23 stsp 		goto done;
 299 13b2bc37 2022-10-23 stsp 	}
 300 13b2bc37 2022-10-23 stsp 
 301 13b2bc37 2022-10-23 stsp 	TAILQ_FOREACH(re, &refs, entry) {
 302 13b2bc37 2022-10-23 stsp 		if (got_ref_is_symbolic(re->ref))
 303 13b2bc37 2022-10-23 stsp 			continue;
 304 13b2bc37 2022-10-23 stsp 		err = send_ref(re->ref, &ibuf);
 305 13b2bc37 2022-10-23 stsp 		if (err)
 306 13b2bc37 2022-10-23 stsp 			goto done;
 307 13b2bc37 2022-10-23 stsp 	}
 308 13b2bc37 2022-10-23 stsp 
 309 13b2bc37 2022-10-23 stsp 	err = gotd_imsg_flush(&ibuf);
 310 13b2bc37 2022-10-23 stsp done:
 311 13b2bc37 2022-10-23 stsp 	got_ref_list_free(&refs);
 312 13b2bc37 2022-10-23 stsp 	imsg_clear(&ibuf);
 313 13b2bc37 2022-10-23 stsp 	return err;
 314 13b2bc37 2022-10-23 stsp }
 315 13b2bc37 2022-10-23 stsp 
 316 13b2bc37 2022-10-23 stsp static const struct got_error *
 317 13b2bc37 2022-10-23 stsp protect_ref_namespace(struct got_reference *ref, const char *namespace)
 318 13b2bc37 2022-10-23 stsp {
 319 13b2bc37 2022-10-23 stsp 	size_t len = strlen(namespace);
 320 13b2bc37 2022-10-23 stsp 
 321 13b2bc37 2022-10-23 stsp 	if (len < 5 || strncmp("refs/", namespace, 5) != 0 ||
 322 13b2bc37 2022-10-23 stsp 	    namespace[len -1] != '/') {
 323 13b2bc37 2022-10-23 stsp 		return got_error_fmt(GOT_ERR_BAD_REF_NAME,
 324 13b2bc37 2022-10-23 stsp 		    "reference namespace '%s'", namespace);
 325 13b2bc37 2022-10-23 stsp 	}
 326 13b2bc37 2022-10-23 stsp 
 327 13b2bc37 2022-10-23 stsp 	if (strncmp(namespace, got_ref_get_name(ref), len) == 0)
 328 13b2bc37 2022-10-23 stsp 		return got_error_fmt(GOT_ERR_REFS_PROTECTED, "%s", namespace);
 329 13b2bc37 2022-10-23 stsp 
 330 13b2bc37 2022-10-23 stsp 	return NULL;
 331 13b2bc37 2022-10-23 stsp }
 332 13b2bc37 2022-10-23 stsp 
 333 13b2bc37 2022-10-23 stsp static const struct got_error *
 334 1a52c9bf 2022-12-30 stsp recv_ref_update(struct imsg *imsg)
 335 13b2bc37 2022-10-23 stsp {
 336 9a8e357c 2023-01-28 op 	static const char zero_id[SHA1_DIGEST_LENGTH];
 337 13b2bc37 2022-10-23 stsp 	const struct got_error *err = NULL;
 338 1a52c9bf 2022-12-30 stsp 	struct repo_write_client *client = &repo_write_client;
 339 13b2bc37 2022-10-23 stsp 	struct gotd_imsg_ref_update iref;
 340 13b2bc37 2022-10-23 stsp 	size_t datalen;
 341 13b2bc37 2022-10-23 stsp 	char *refname = NULL;
 342 13b2bc37 2022-10-23 stsp 	struct got_reference *ref = NULL;
 343 13b2bc37 2022-10-23 stsp 	struct got_object_id *id = NULL;
 344 13b2bc37 2022-10-23 stsp 	struct imsgbuf ibuf;
 345 13b2bc37 2022-10-23 stsp 	struct gotd_ref_update *ref_update = NULL;
 346 13b2bc37 2022-10-23 stsp 
 347 13b2bc37 2022-10-23 stsp 	log_debug("ref-update received");
 348 13b2bc37 2022-10-23 stsp 
 349 13b2bc37 2022-10-23 stsp 	datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
 350 13b2bc37 2022-10-23 stsp 	if (datalen < sizeof(iref))
 351 13b2bc37 2022-10-23 stsp 		return got_error(GOT_ERR_PRIVSEP_LEN);
 352 13b2bc37 2022-10-23 stsp 	memcpy(&iref, imsg->data, sizeof(iref));
 353 13b2bc37 2022-10-23 stsp 	if (datalen != sizeof(iref) + iref.name_len)
 354 13b2bc37 2022-10-23 stsp 		return got_error(GOT_ERR_PRIVSEP_LEN);
 355 13b2bc37 2022-10-23 stsp 
 356 1a52c9bf 2022-12-30 stsp 	imsg_init(&ibuf, client->fd);
 357 13b2bc37 2022-10-23 stsp 
 358 00b3e9ae 2023-01-11 op 	refname = strndup(imsg->data + sizeof(iref), iref.name_len);
 359 13b2bc37 2022-10-23 stsp 	if (refname == NULL)
 360 00b3e9ae 2023-01-11 op 		return got_error_from_errno("strndup");
 361 13b2bc37 2022-10-23 stsp 
 362 13b2bc37 2022-10-23 stsp 	ref_update = calloc(1, sizeof(*ref_update));
 363 13b2bc37 2022-10-23 stsp 	if (ref_update == NULL) {
 364 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("malloc");
 365 13b2bc37 2022-10-23 stsp 		goto done;
 366 13b2bc37 2022-10-23 stsp 	}
 367 13b2bc37 2022-10-23 stsp 
 368 13b2bc37 2022-10-23 stsp 	memcpy(ref_update->old_id.sha1, iref.old_id, SHA1_DIGEST_LENGTH);
 369 13b2bc37 2022-10-23 stsp 	memcpy(ref_update->new_id.sha1, iref.new_id, SHA1_DIGEST_LENGTH);
 370 13b2bc37 2022-10-23 stsp 
 371 13b2bc37 2022-10-23 stsp 	err = got_ref_open(&ref, repo_write.repo, refname, 0);
 372 13b2bc37 2022-10-23 stsp 	if (err) {
 373 13b2bc37 2022-10-23 stsp 		if (err->code != GOT_ERR_NOT_REF)
 374 13b2bc37 2022-10-23 stsp 			goto done;
 375 13b2bc37 2022-10-23 stsp 		err = got_ref_alloc(&ref, refname, &ref_update->new_id);
 376 13b2bc37 2022-10-23 stsp 		if (err)
 377 13b2bc37 2022-10-23 stsp 			goto done;
 378 13b2bc37 2022-10-23 stsp 		ref_update->ref_is_new = 1;
 379 0ff2c315 2023-01-18 stsp 		client->nref_new++;
 380 13b2bc37 2022-10-23 stsp 	}
 381 13b2bc37 2022-10-23 stsp 	if (got_ref_is_symbolic(ref)) {
 382 13b2bc37 2022-10-23 stsp 		err = got_error_fmt(GOT_ERR_BAD_REF_TYPE,
 383 13b2bc37 2022-10-23 stsp 		    "'%s' is a symbolic reference and cannot "
 384 13b2bc37 2022-10-23 stsp 		    "be updated", got_ref_get_name(ref));
 385 13b2bc37 2022-10-23 stsp 		goto done;
 386 13b2bc37 2022-10-23 stsp 	}
 387 13b2bc37 2022-10-23 stsp 	if (strncmp("refs/", got_ref_get_name(ref), 5) != 0) {
 388 13b2bc37 2022-10-23 stsp 		err = got_error_fmt(GOT_ERR_BAD_REF_NAME,
 389 13b2bc37 2022-10-23 stsp 		    "%s: does not begin with 'refs/'",
 390 13b2bc37 2022-10-23 stsp 		    got_ref_get_name(ref));
 391 13b2bc37 2022-10-23 stsp 		goto done;
 392 13b2bc37 2022-10-23 stsp 	}
 393 13b2bc37 2022-10-23 stsp 
 394 13b2bc37 2022-10-23 stsp 	err = protect_ref_namespace(ref, "refs/got/");
 395 13b2bc37 2022-10-23 stsp 	if (err)
 396 13b2bc37 2022-10-23 stsp 		goto done;
 397 13b2bc37 2022-10-23 stsp 	err = protect_ref_namespace(ref, "refs/remotes/");
 398 13b2bc37 2022-10-23 stsp 	if (err)
 399 13b2bc37 2022-10-23 stsp 		goto done;
 400 13b2bc37 2022-10-23 stsp 
 401 13b2bc37 2022-10-23 stsp 	if (!ref_update->ref_is_new) {
 402 13b2bc37 2022-10-23 stsp 		/*
 403 13b2bc37 2022-10-23 stsp 		 * Ensure the client's idea of this update is still valid.
 404 13b2bc37 2022-10-23 stsp 		 * At this point we can only return an error, to prevent
 405 13b2bc37 2022-10-23 stsp 		 * the client from uploading a pack file which will likely
 406 13b2bc37 2022-10-23 stsp 		 * have to be discarded.
 407 13b2bc37 2022-10-23 stsp 		 */
 408 13b2bc37 2022-10-23 stsp 		err = got_ref_resolve(&id, repo_write.repo, ref);
 409 13b2bc37 2022-10-23 stsp 		if (err)
 410 13b2bc37 2022-10-23 stsp 			goto done;
 411 13b2bc37 2022-10-23 stsp 
 412 13b2bc37 2022-10-23 stsp 		if (got_object_id_cmp(id, &ref_update->old_id) != 0) {
 413 13b2bc37 2022-10-23 stsp 			err = got_error_fmt(GOT_ERR_REF_BUSY,
 414 13b2bc37 2022-10-23 stsp 			    "%s has been modified by someone else "
 415 13b2bc37 2022-10-23 stsp 			    "while transaction was in progress",
 416 13b2bc37 2022-10-23 stsp 			    got_ref_get_name(ref));
 417 13b2bc37 2022-10-23 stsp 			goto done;
 418 13b2bc37 2022-10-23 stsp 		}
 419 13b2bc37 2022-10-23 stsp 	}
 420 13b2bc37 2022-10-23 stsp 
 421 13b2bc37 2022-10-23 stsp 	gotd_imsg_send_ack(&ref_update->new_id, &ibuf, PROC_REPO_WRITE,
 422 13b2bc37 2022-10-23 stsp 	    repo_write.pid);
 423 13b2bc37 2022-10-23 stsp 
 424 13b2bc37 2022-10-23 stsp 	ref_update->ref = ref;
 425 9a8e357c 2023-01-28 op 	if (memcmp(ref_update->new_id.sha1, zero_id, sizeof(zero_id)) == 0) {
 426 9a8e357c 2023-01-28 op 		ref_update->delete_ref = 1;
 427 9a8e357c 2023-01-28 op 		client->nref_del++;
 428 9a8e357c 2023-01-28 op 	}
 429 1a52c9bf 2022-12-30 stsp 	STAILQ_INSERT_HEAD(&client->ref_updates, ref_update, entry);
 430 1a52c9bf 2022-12-30 stsp 	client->nref_updates++;
 431 13b2bc37 2022-10-23 stsp 	ref = NULL;
 432 13b2bc37 2022-10-23 stsp 	ref_update = NULL;
 433 13b2bc37 2022-10-23 stsp done:
 434 13b2bc37 2022-10-23 stsp 	if (ref)
 435 13b2bc37 2022-10-23 stsp 		got_ref_close(ref);
 436 13b2bc37 2022-10-23 stsp 	free(ref_update);
 437 13b2bc37 2022-10-23 stsp 	free(refname);
 438 13b2bc37 2022-10-23 stsp 	free(id);
 439 13b2bc37 2022-10-23 stsp 	return err;
 440 13b2bc37 2022-10-23 stsp }
 441 13b2bc37 2022-10-23 stsp 
 442 13b2bc37 2022-10-23 stsp static const struct got_error *
 443 13b2bc37 2022-10-23 stsp pack_index_progress(void *arg, uint32_t nobj_total, uint32_t nobj_indexed,
 444 13b2bc37 2022-10-23 stsp     uint32_t nobj_loose, uint32_t nobj_resolved)
 445 13b2bc37 2022-10-23 stsp {
 446 13b2bc37 2022-10-23 stsp 	int p_indexed = 0, p_resolved = 0;
 447 13b2bc37 2022-10-23 stsp 	int nobj_delta = nobj_total - nobj_loose;
 448 13b2bc37 2022-10-23 stsp 
 449 13b2bc37 2022-10-23 stsp 	if (nobj_total > 0)
 450 13b2bc37 2022-10-23 stsp 		p_indexed = (nobj_indexed * 100) / nobj_total;
 451 13b2bc37 2022-10-23 stsp 
 452 13b2bc37 2022-10-23 stsp 	if (nobj_delta > 0)
 453 13b2bc37 2022-10-23 stsp 		p_resolved = (nobj_resolved * 100) / nobj_delta;
 454 13b2bc37 2022-10-23 stsp 
 455 13b2bc37 2022-10-23 stsp 	if (p_resolved > 0) {
 456 13b2bc37 2022-10-23 stsp 		log_debug("indexing %d objects %d%%; resolving %d deltas %d%%",
 457 13b2bc37 2022-10-23 stsp 		    nobj_total, p_indexed, nobj_delta, p_resolved);
 458 13b2bc37 2022-10-23 stsp 	} else
 459 13b2bc37 2022-10-23 stsp 		log_debug("indexing %d objects %d%%", nobj_total, p_indexed);
 460 13b2bc37 2022-10-23 stsp 
 461 13b2bc37 2022-10-23 stsp 	return NULL;
 462 13b2bc37 2022-10-23 stsp }
 463 13b2bc37 2022-10-23 stsp 
 464 13b2bc37 2022-10-23 stsp static const struct got_error *
 465 13b2bc37 2022-10-23 stsp read_more_pack_stream(int infd, BUF *buf, size_t minsize)
 466 13b2bc37 2022-10-23 stsp {
 467 13b2bc37 2022-10-23 stsp 	const struct got_error *err = NULL;
 468 13b2bc37 2022-10-23 stsp 	uint8_t readahead[65536];
 469 13b2bc37 2022-10-23 stsp 	size_t have, newlen;
 470 13b2bc37 2022-10-23 stsp 
 471 13b2bc37 2022-10-23 stsp 	err = got_poll_read_full(infd, &have,
 472 13b2bc37 2022-10-23 stsp 	    readahead, sizeof(readahead), minsize);
 473 13b2bc37 2022-10-23 stsp 	if (err)
 474 13b2bc37 2022-10-23 stsp 		return err;
 475 13b2bc37 2022-10-23 stsp 
 476 13b2bc37 2022-10-23 stsp 	err = buf_append(&newlen, buf, readahead, have);
 477 13b2bc37 2022-10-23 stsp 	if (err)
 478 13b2bc37 2022-10-23 stsp 		return err;
 479 e26970cc 2023-01-10 op 	return NULL;
 480 13b2bc37 2022-10-23 stsp }
 481 13b2bc37 2022-10-23 stsp 
 482 13b2bc37 2022-10-23 stsp static const struct got_error *
 483 13b2bc37 2022-10-23 stsp copy_object_type_and_size(uint8_t *type, uint64_t *size, int infd, int outfd,
 484 13b2bc37 2022-10-23 stsp     off_t *outsize, BUF *buf, size_t *buf_pos, SHA1_CTX *ctx)
 485 13b2bc37 2022-10-23 stsp {
 486 13b2bc37 2022-10-23 stsp 	const struct got_error *err = NULL;
 487 13b2bc37 2022-10-23 stsp 	uint8_t t = 0;
 488 13b2bc37 2022-10-23 stsp 	uint64_t s = 0;
 489 13b2bc37 2022-10-23 stsp 	uint8_t sizebuf[8];
 490 13b2bc37 2022-10-23 stsp 	size_t i = 0;
 491 13b2bc37 2022-10-23 stsp 	off_t obj_offset = *outsize;
 492 13b2bc37 2022-10-23 stsp 
 493 13b2bc37 2022-10-23 stsp 	do {
 494 13b2bc37 2022-10-23 stsp 		/* We do not support size values which don't fit in 64 bit. */
 495 13b2bc37 2022-10-23 stsp 		if (i > 9)
 496 13b2bc37 2022-10-23 stsp 			return got_error_fmt(GOT_ERR_OBJ_TOO_LARGE,
 497 22ec3416 2022-10-25 op 			    "packfile offset %lld", (long long)obj_offset);
 498 13b2bc37 2022-10-23 stsp 
 499 13b2bc37 2022-10-23 stsp 		if (buf_len(buf) - *buf_pos < sizeof(sizebuf[0])) {
 500 13b2bc37 2022-10-23 stsp 			err = read_more_pack_stream(infd, buf,
 501 13b2bc37 2022-10-23 stsp 			    sizeof(sizebuf[0]));
 502 13b2bc37 2022-10-23 stsp 			if (err)
 503 13b2bc37 2022-10-23 stsp 				return err;
 504 13b2bc37 2022-10-23 stsp 		}
 505 13b2bc37 2022-10-23 stsp 
 506 13b2bc37 2022-10-23 stsp 		sizebuf[i] = buf_getc(buf, *buf_pos);
 507 13b2bc37 2022-10-23 stsp 		*buf_pos += sizeof(sizebuf[i]);
 508 13b2bc37 2022-10-23 stsp 
 509 13b2bc37 2022-10-23 stsp 		if (i == 0) {
 510 13b2bc37 2022-10-23 stsp 			t = (sizebuf[i] & GOT_PACK_OBJ_SIZE0_TYPE_MASK) >>
 511 13b2bc37 2022-10-23 stsp 			    GOT_PACK_OBJ_SIZE0_TYPE_MASK_SHIFT;
 512 13b2bc37 2022-10-23 stsp 			s = (sizebuf[i] & GOT_PACK_OBJ_SIZE0_VAL_MASK);
 513 13b2bc37 2022-10-23 stsp 		} else {
 514 13b2bc37 2022-10-23 stsp 			size_t shift = 4 + 7 * (i - 1);
 515 13b2bc37 2022-10-23 stsp 			s |= ((sizebuf[i] & GOT_PACK_OBJ_SIZE_VAL_MASK) <<
 516 13b2bc37 2022-10-23 stsp 			    shift);
 517 13b2bc37 2022-10-23 stsp 		}
 518 13b2bc37 2022-10-23 stsp 		i++;
 519 13b2bc37 2022-10-23 stsp 	} while (sizebuf[i - 1] & GOT_PACK_OBJ_SIZE_MORE);
 520 13b2bc37 2022-10-23 stsp 
 521 13b2bc37 2022-10-23 stsp 	err = got_pack_hwrite(outfd, sizebuf, i, ctx);
 522 13b2bc37 2022-10-23 stsp 	if (err)
 523 13b2bc37 2022-10-23 stsp 		return err;
 524 13b2bc37 2022-10-23 stsp 	*outsize += i;
 525 13b2bc37 2022-10-23 stsp 
 526 13b2bc37 2022-10-23 stsp 	*type = t;
 527 13b2bc37 2022-10-23 stsp 	*size = s;
 528 13b2bc37 2022-10-23 stsp 	return NULL;
 529 13b2bc37 2022-10-23 stsp }
 530 13b2bc37 2022-10-23 stsp 
 531 13b2bc37 2022-10-23 stsp static const struct got_error *
 532 13b2bc37 2022-10-23 stsp copy_ref_delta(int infd, int outfd, off_t *outsize, BUF *buf, size_t *buf_pos,
 533 13b2bc37 2022-10-23 stsp     SHA1_CTX *ctx)
 534 13b2bc37 2022-10-23 stsp {
 535 13b2bc37 2022-10-23 stsp 	const struct got_error *err = NULL;
 536 13b2bc37 2022-10-23 stsp 	size_t remain = buf_len(buf) - *buf_pos;
 537 13b2bc37 2022-10-23 stsp 
 538 13b2bc37 2022-10-23 stsp 	if (remain < SHA1_DIGEST_LENGTH) {
 539 13b2bc37 2022-10-23 stsp 		err = read_more_pack_stream(infd, buf,
 540 13b2bc37 2022-10-23 stsp 		    SHA1_DIGEST_LENGTH - remain);
 541 13b2bc37 2022-10-23 stsp 		if (err)
 542 13b2bc37 2022-10-23 stsp 			return err;
 543 13b2bc37 2022-10-23 stsp 	}
 544 13b2bc37 2022-10-23 stsp 
 545 13b2bc37 2022-10-23 stsp 	err = got_pack_hwrite(outfd, buf_get(buf) + *buf_pos,
 546 13b2bc37 2022-10-23 stsp 	    SHA1_DIGEST_LENGTH, ctx);
 547 13b2bc37 2022-10-23 stsp 	if (err)
 548 13b2bc37 2022-10-23 stsp 		return err;
 549 13b2bc37 2022-10-23 stsp 
 550 13b2bc37 2022-10-23 stsp 	*buf_pos += SHA1_DIGEST_LENGTH;
 551 13b2bc37 2022-10-23 stsp 	return NULL;
 552 13b2bc37 2022-10-23 stsp }
 553 13b2bc37 2022-10-23 stsp 
 554 13b2bc37 2022-10-23 stsp static const struct got_error *
 555 13b2bc37 2022-10-23 stsp copy_offset_delta(int infd, int outfd, off_t *outsize, BUF *buf, size_t *buf_pos,
 556 13b2bc37 2022-10-23 stsp     SHA1_CTX *ctx)
 557 13b2bc37 2022-10-23 stsp {
 558 13b2bc37 2022-10-23 stsp 	const struct got_error *err = NULL;
 559 13b2bc37 2022-10-23 stsp 	uint64_t o = 0;
 560 13b2bc37 2022-10-23 stsp 	uint8_t offbuf[8];
 561 13b2bc37 2022-10-23 stsp 	size_t i = 0;
 562 13b2bc37 2022-10-23 stsp 	off_t obj_offset = *outsize;
 563 13b2bc37 2022-10-23 stsp 
 564 13b2bc37 2022-10-23 stsp 	do {
 565 13b2bc37 2022-10-23 stsp 		/* We do not support offset values which don't fit in 64 bit. */
 566 13b2bc37 2022-10-23 stsp 		if (i > 8)
 567 13b2bc37 2022-10-23 stsp 			return got_error_fmt(GOT_ERR_OBJ_TOO_LARGE,
 568 22ec3416 2022-10-25 op 			    "packfile offset %lld", (long long)obj_offset);
 569 13b2bc37 2022-10-23 stsp 
 570 13b2bc37 2022-10-23 stsp 		if (buf_len(buf) - *buf_pos < sizeof(offbuf[0])) {
 571 13b2bc37 2022-10-23 stsp 			err = read_more_pack_stream(infd, buf,
 572 13b2bc37 2022-10-23 stsp 			    sizeof(offbuf[0]));
 573 13b2bc37 2022-10-23 stsp 			if (err)
 574 13b2bc37 2022-10-23 stsp 				return err;
 575 13b2bc37 2022-10-23 stsp 		}
 576 13b2bc37 2022-10-23 stsp 
 577 13b2bc37 2022-10-23 stsp 		offbuf[i] = buf_getc(buf, *buf_pos);
 578 13b2bc37 2022-10-23 stsp 		*buf_pos += sizeof(offbuf[i]);
 579 13b2bc37 2022-10-23 stsp 
 580 13b2bc37 2022-10-23 stsp 		if (i == 0)
 581 13b2bc37 2022-10-23 stsp 			o = (offbuf[i] & GOT_PACK_OBJ_DELTA_OFF_VAL_MASK);
 582 13b2bc37 2022-10-23 stsp 		else {
 583 13b2bc37 2022-10-23 stsp 			o++;
 584 13b2bc37 2022-10-23 stsp 			o <<= 7;
 585 13b2bc37 2022-10-23 stsp 			o += (offbuf[i] & GOT_PACK_OBJ_DELTA_OFF_VAL_MASK);
 586 13b2bc37 2022-10-23 stsp 		}
 587 13b2bc37 2022-10-23 stsp 		i++;
 588 13b2bc37 2022-10-23 stsp 	} while (offbuf[i - 1] & GOT_PACK_OBJ_DELTA_OFF_MORE);
 589 13b2bc37 2022-10-23 stsp 
 590 13b2bc37 2022-10-23 stsp 	if (o < sizeof(struct got_packfile_hdr) || o > *outsize)
 591 13b2bc37 2022-10-23 stsp 		return got_error(GOT_ERR_PACK_OFFSET);
 592 13b2bc37 2022-10-23 stsp 
 593 13b2bc37 2022-10-23 stsp 	err = got_pack_hwrite(outfd, offbuf, i, ctx);
 594 13b2bc37 2022-10-23 stsp 	if (err)
 595 13b2bc37 2022-10-23 stsp 		return err;
 596 13b2bc37 2022-10-23 stsp 
 597 13b2bc37 2022-10-23 stsp 	*outsize += i;
 598 13b2bc37 2022-10-23 stsp 	return NULL;
 599 13b2bc37 2022-10-23 stsp }
 600 13b2bc37 2022-10-23 stsp 
 601 13b2bc37 2022-10-23 stsp static const struct got_error *
 602 13b2bc37 2022-10-23 stsp copy_zstream(int infd, int outfd, off_t *outsize, BUF *buf, size_t *buf_pos,
 603 13b2bc37 2022-10-23 stsp     SHA1_CTX *ctx)
 604 13b2bc37 2022-10-23 stsp {
 605 13b2bc37 2022-10-23 stsp 	const struct got_error *err = NULL;
 606 13b2bc37 2022-10-23 stsp 	z_stream z;
 607 13b2bc37 2022-10-23 stsp 	int zret;
 608 13b2bc37 2022-10-23 stsp 	char voidbuf[1024];
 609 13b2bc37 2022-10-23 stsp 	size_t consumed_total = 0;
 610 13b2bc37 2022-10-23 stsp 	off_t zstream_offset = *outsize;
 611 13b2bc37 2022-10-23 stsp 
 612 13b2bc37 2022-10-23 stsp 	memset(&z, 0, sizeof(z));
 613 13b2bc37 2022-10-23 stsp 
 614 13b2bc37 2022-10-23 stsp 	z.zalloc = Z_NULL;
 615 13b2bc37 2022-10-23 stsp 	z.zfree = Z_NULL;
 616 13b2bc37 2022-10-23 stsp 	zret = inflateInit(&z);
 617 13b2bc37 2022-10-23 stsp 	if (zret != Z_OK) {
 618 13b2bc37 2022-10-23 stsp 		if  (zret == Z_ERRNO)
 619 13b2bc37 2022-10-23 stsp 			return got_error_from_errno("inflateInit");
 620 13b2bc37 2022-10-23 stsp 		if  (zret == Z_MEM_ERROR) {
 621 13b2bc37 2022-10-23 stsp 			errno = ENOMEM;
 622 13b2bc37 2022-10-23 stsp 			return got_error_from_errno("inflateInit");
 623 13b2bc37 2022-10-23 stsp 		}
 624 13b2bc37 2022-10-23 stsp 		return got_error_msg(GOT_ERR_DECOMPRESSION,
 625 13b2bc37 2022-10-23 stsp 		    "inflateInit failed");
 626 13b2bc37 2022-10-23 stsp 	}
 627 13b2bc37 2022-10-23 stsp 
 628 13b2bc37 2022-10-23 stsp 	while (zret != Z_STREAM_END) {
 629 13b2bc37 2022-10-23 stsp 		size_t last_total_in, consumed;
 630 13b2bc37 2022-10-23 stsp 
 631 13b2bc37 2022-10-23 stsp 		/*
 632 13b2bc37 2022-10-23 stsp 		 * Decompress into the void. Object data will be parsed
 633 13b2bc37 2022-10-23 stsp 		 * later, when the pack file is indexed. For now, we just
 634 13b2bc37 2022-10-23 stsp 		 * want to locate the end of the compressed stream.
 635 13b2bc37 2022-10-23 stsp 		 */
 636 13b2bc37 2022-10-23 stsp 		while (zret != Z_STREAM_END && buf_len(buf) - *buf_pos > 0) {
 637 13b2bc37 2022-10-23 stsp 			last_total_in = z.total_in;
 638 13b2bc37 2022-10-23 stsp 			z.next_in = buf_get(buf) + *buf_pos;
 639 13b2bc37 2022-10-23 stsp 			z.avail_in = buf_len(buf) - *buf_pos;
 640 13b2bc37 2022-10-23 stsp 			z.next_out = voidbuf;
 641 13b2bc37 2022-10-23 stsp 			z.avail_out = sizeof(voidbuf);
 642 13b2bc37 2022-10-23 stsp 
 643 13b2bc37 2022-10-23 stsp 			zret = inflate(&z, Z_SYNC_FLUSH);
 644 13b2bc37 2022-10-23 stsp 			if (zret != Z_OK && zret != Z_BUF_ERROR &&
 645 13b2bc37 2022-10-23 stsp 			    zret != Z_STREAM_END) {
 646 13b2bc37 2022-10-23 stsp 				err = got_error_fmt(GOT_ERR_DECOMPRESSION,
 647 22ec3416 2022-10-25 op 				    "packfile offset %lld",
 648 22ec3416 2022-10-25 op 				    (long long)zstream_offset);
 649 13b2bc37 2022-10-23 stsp 				goto done;
 650 13b2bc37 2022-10-23 stsp 			}
 651 13b2bc37 2022-10-23 stsp 			consumed = z.total_in - last_total_in;
 652 13b2bc37 2022-10-23 stsp 
 653 13b2bc37 2022-10-23 stsp 			err = got_pack_hwrite(outfd, buf_get(buf) + *buf_pos,
 654 13b2bc37 2022-10-23 stsp 			    consumed, ctx);
 655 13b2bc37 2022-10-23 stsp 			if (err)
 656 13b2bc37 2022-10-23 stsp 				goto done;
 657 13b2bc37 2022-10-23 stsp 
 658 13b2bc37 2022-10-23 stsp 			err = buf_discard(buf, *buf_pos + consumed);
 659 13b2bc37 2022-10-23 stsp 			if (err)
 660 13b2bc37 2022-10-23 stsp 				goto done;
 661 13b2bc37 2022-10-23 stsp 			*buf_pos = 0;
 662 13b2bc37 2022-10-23 stsp 
 663 13b2bc37 2022-10-23 stsp 			consumed_total += consumed;
 664 13b2bc37 2022-10-23 stsp 		}
 665 13b2bc37 2022-10-23 stsp 
 666 13b2bc37 2022-10-23 stsp 		if (zret != Z_STREAM_END) {
 667 13b2bc37 2022-10-23 stsp 			err = read_more_pack_stream(infd, buf, 1);
 668 13b2bc37 2022-10-23 stsp 			if (err)
 669 13b2bc37 2022-10-23 stsp 				goto done;
 670 13b2bc37 2022-10-23 stsp 		}
 671 13b2bc37 2022-10-23 stsp 	}
 672 13b2bc37 2022-10-23 stsp 
 673 13b2bc37 2022-10-23 stsp 	if (err == NULL)
 674 13b2bc37 2022-10-23 stsp 		*outsize += consumed_total;
 675 13b2bc37 2022-10-23 stsp done:
 676 13b2bc37 2022-10-23 stsp 	inflateEnd(&z);
 677 13b2bc37 2022-10-23 stsp 	return err;
 678 13b2bc37 2022-10-23 stsp }
 679 13b2bc37 2022-10-23 stsp 
 680 13b2bc37 2022-10-23 stsp static const struct got_error *
 681 13b2bc37 2022-10-23 stsp validate_object_type(int obj_type)
 682 13b2bc37 2022-10-23 stsp {
 683 13b2bc37 2022-10-23 stsp 	switch (obj_type) {
 684 13b2bc37 2022-10-23 stsp 	case GOT_OBJ_TYPE_BLOB:
 685 13b2bc37 2022-10-23 stsp 	case GOT_OBJ_TYPE_COMMIT:
 686 13b2bc37 2022-10-23 stsp 	case GOT_OBJ_TYPE_TREE:
 687 13b2bc37 2022-10-23 stsp 	case GOT_OBJ_TYPE_TAG:
 688 13b2bc37 2022-10-23 stsp 	case GOT_OBJ_TYPE_REF_DELTA:
 689 13b2bc37 2022-10-23 stsp 	case GOT_OBJ_TYPE_OFFSET_DELTA:
 690 13b2bc37 2022-10-23 stsp 		return NULL;
 691 13b2bc37 2022-10-23 stsp 	default:
 692 13b2bc37 2022-10-23 stsp 		break;
 693 13b2bc37 2022-10-23 stsp 	}
 694 13b2bc37 2022-10-23 stsp 
 695 13b2bc37 2022-10-23 stsp 	return got_error(GOT_ERR_OBJ_TYPE);
 696 13b2bc37 2022-10-23 stsp }
 697 13b2bc37 2022-10-23 stsp 
 698 13b2bc37 2022-10-23 stsp static const struct got_error *
 699 0ff2c315 2023-01-18 stsp recv_packdata(off_t *outsize, uint32_t *nobj, uint8_t *sha1,
 700 0ff2c315 2023-01-18 stsp     int infd, int outfd)
 701 13b2bc37 2022-10-23 stsp {
 702 13b2bc37 2022-10-23 stsp 	const struct got_error *err;
 703 0ff2c315 2023-01-18 stsp 	struct repo_write_client *client = &repo_write_client;
 704 13b2bc37 2022-10-23 stsp 	struct got_packfile_hdr hdr;
 705 13b2bc37 2022-10-23 stsp 	size_t have;
 706 0ff2c315 2023-01-18 stsp 	uint32_t nhave = 0;
 707 13b2bc37 2022-10-23 stsp 	SHA1_CTX ctx;
 708 13b2bc37 2022-10-23 stsp 	uint8_t expected_sha1[SHA1_DIGEST_LENGTH];
 709 13b2bc37 2022-10-23 stsp 	char hex[SHA1_DIGEST_STRING_LENGTH];
 710 13b2bc37 2022-10-23 stsp 	BUF *buf = NULL;
 711 13b2bc37 2022-10-23 stsp 	size_t buf_pos = 0, remain;
 712 13b2bc37 2022-10-23 stsp 	ssize_t w;
 713 13b2bc37 2022-10-23 stsp 
 714 13b2bc37 2022-10-23 stsp 	*outsize = 0;
 715 0ff2c315 2023-01-18 stsp 	*nobj = 0;
 716 9a8e357c 2023-01-28 op 
 717 9a8e357c 2023-01-28 op 	/* if only deleting references there's nothing to read */
 718 9a8e357c 2023-01-28 op 	if (client->nref_updates == client->nref_del)
 719 9a8e357c 2023-01-28 op 		return NULL;
 720 9a8e357c 2023-01-28 op 
 721 13b2bc37 2022-10-23 stsp 	SHA1Init(&ctx);
 722 13b2bc37 2022-10-23 stsp 
 723 13b2bc37 2022-10-23 stsp 	err = got_poll_read_full(infd, &have, &hdr, sizeof(hdr), sizeof(hdr));
 724 13b2bc37 2022-10-23 stsp 	if (err)
 725 13b2bc37 2022-10-23 stsp 		return err;
 726 13b2bc37 2022-10-23 stsp 	if (have != sizeof(hdr))
 727 13b2bc37 2022-10-23 stsp 		return got_error_msg(GOT_ERR_BAD_PACKFILE, "short pack file");
 728 13b2bc37 2022-10-23 stsp 	*outsize += have;
 729 13b2bc37 2022-10-23 stsp 
 730 13b2bc37 2022-10-23 stsp 	if (hdr.signature != htobe32(GOT_PACKFILE_SIGNATURE))
 731 13b2bc37 2022-10-23 stsp 		return got_error_msg(GOT_ERR_BAD_PACKFILE,
 732 13b2bc37 2022-10-23 stsp 		    "bad packfile signature");
 733 13b2bc37 2022-10-23 stsp 	if (hdr.version != htobe32(GOT_PACKFILE_VERSION))
 734 13b2bc37 2022-10-23 stsp 		return got_error_msg(GOT_ERR_BAD_PACKFILE,
 735 13b2bc37 2022-10-23 stsp 		    "bad packfile version");
 736 13b2bc37 2022-10-23 stsp 
 737 0ff2c315 2023-01-18 stsp 	*nobj = be32toh(hdr.nobjects);
 738 0ff2c315 2023-01-18 stsp 	if (*nobj == 0) {
 739 0ff2c315 2023-01-18 stsp 		/*
 740 0ff2c315 2023-01-18 stsp 		 * Clients which are creating new references only
 741 0ff2c315 2023-01-18 stsp 		 * will send us an empty pack file.
 742 0ff2c315 2023-01-18 stsp 		 */
 743 0ff2c315 2023-01-18 stsp 		if (client->nref_updates > 0 &&
 744 0ff2c315 2023-01-18 stsp 		    client->nref_updates == client->nref_new)
 745 0ff2c315 2023-01-18 stsp 			return NULL;
 746 0ff2c315 2023-01-18 stsp 
 747 13b2bc37 2022-10-23 stsp 		return got_error_msg(GOT_ERR_BAD_PACKFILE,
 748 13b2bc37 2022-10-23 stsp 		    "bad packfile with zero objects");
 749 0ff2c315 2023-01-18 stsp 	}
 750 13b2bc37 2022-10-23 stsp 
 751 0ff2c315 2023-01-18 stsp 	log_debug("expecting %d objects", *nobj);
 752 13b2bc37 2022-10-23 stsp 
 753 13b2bc37 2022-10-23 stsp 	err = got_pack_hwrite(outfd, &hdr, sizeof(hdr), &ctx);
 754 13b2bc37 2022-10-23 stsp 	if (err)
 755 13b2bc37 2022-10-23 stsp 		return err;
 756 13b2bc37 2022-10-23 stsp 
 757 13b2bc37 2022-10-23 stsp 	err = buf_alloc(&buf, 65536);
 758 13b2bc37 2022-10-23 stsp 	if (err)
 759 13b2bc37 2022-10-23 stsp 		return err;
 760 13b2bc37 2022-10-23 stsp 
 761 0ff2c315 2023-01-18 stsp 	while (nhave != *nobj) {
 762 13b2bc37 2022-10-23 stsp 		uint8_t obj_type;
 763 13b2bc37 2022-10-23 stsp 		uint64_t obj_size;
 764 13b2bc37 2022-10-23 stsp 
 765 13b2bc37 2022-10-23 stsp 		err = copy_object_type_and_size(&obj_type, &obj_size,
 766 13b2bc37 2022-10-23 stsp 		    infd, outfd, outsize, buf, &buf_pos, &ctx);
 767 13b2bc37 2022-10-23 stsp 		if (err)
 768 13b2bc37 2022-10-23 stsp 			goto done;
 769 13b2bc37 2022-10-23 stsp 
 770 13b2bc37 2022-10-23 stsp 		err = validate_object_type(obj_type);
 771 13b2bc37 2022-10-23 stsp 		if (err)
 772 13b2bc37 2022-10-23 stsp 			goto done;
 773 13b2bc37 2022-10-23 stsp 
 774 13b2bc37 2022-10-23 stsp 		if (obj_type == GOT_OBJ_TYPE_REF_DELTA) {
 775 13b2bc37 2022-10-23 stsp 			err = copy_ref_delta(infd, outfd, outsize,
 776 13b2bc37 2022-10-23 stsp 			    buf, &buf_pos, &ctx);
 777 13b2bc37 2022-10-23 stsp 			if (err)
 778 13b2bc37 2022-10-23 stsp 				goto done;
 779 13b2bc37 2022-10-23 stsp 		} else if (obj_type == GOT_OBJ_TYPE_OFFSET_DELTA) {
 780 13b2bc37 2022-10-23 stsp 			err = copy_offset_delta(infd, outfd, outsize,
 781 13b2bc37 2022-10-23 stsp 			    buf, &buf_pos, &ctx);
 782 13b2bc37 2022-10-23 stsp 			if (err)
 783 13b2bc37 2022-10-23 stsp 				goto done;
 784 13b2bc37 2022-10-23 stsp 		}
 785 13b2bc37 2022-10-23 stsp 
 786 13b2bc37 2022-10-23 stsp 		err = copy_zstream(infd, outfd, outsize, buf, &buf_pos, &ctx);
 787 13b2bc37 2022-10-23 stsp 		if (err)
 788 13b2bc37 2022-10-23 stsp 			goto done;
 789 13b2bc37 2022-10-23 stsp 
 790 13b2bc37 2022-10-23 stsp 		nhave++;
 791 13b2bc37 2022-10-23 stsp 	}
 792 13b2bc37 2022-10-23 stsp 
 793 0ff2c315 2023-01-18 stsp 	log_debug("received %u objects", *nobj);
 794 13b2bc37 2022-10-23 stsp 
 795 13b2bc37 2022-10-23 stsp 	SHA1Final(expected_sha1, &ctx);
 796 13b2bc37 2022-10-23 stsp 
 797 13b2bc37 2022-10-23 stsp 	remain = buf_len(buf) - buf_pos;
 798 13b2bc37 2022-10-23 stsp 	if (remain < SHA1_DIGEST_LENGTH) {
 799 13b2bc37 2022-10-23 stsp 		err = read_more_pack_stream(infd, buf,
 800 13b2bc37 2022-10-23 stsp 		    SHA1_DIGEST_LENGTH - remain);
 801 13b2bc37 2022-10-23 stsp 		if (err)
 802 13b2bc37 2022-10-23 stsp 			return err;
 803 13b2bc37 2022-10-23 stsp 	}
 804 13b2bc37 2022-10-23 stsp 
 805 13b2bc37 2022-10-23 stsp 	got_sha1_digest_to_str(expected_sha1, hex, sizeof(hex));
 806 13b2bc37 2022-10-23 stsp 	log_debug("expect SHA1: %s", hex);
 807 13b2bc37 2022-10-23 stsp 	got_sha1_digest_to_str(buf_get(buf) + buf_pos, hex, sizeof(hex));
 808 13b2bc37 2022-10-23 stsp 	log_debug("actual SHA1: %s", hex);
 809 13b2bc37 2022-10-23 stsp 
 810 13b2bc37 2022-10-23 stsp 	if (memcmp(buf_get(buf) + buf_pos, expected_sha1,
 811 13b2bc37 2022-10-23 stsp 	    SHA1_DIGEST_LENGTH) != 0) {
 812 13b2bc37 2022-10-23 stsp 		err = got_error(GOT_ERR_PACKFILE_CSUM);
 813 13b2bc37 2022-10-23 stsp 		goto done;
 814 13b2bc37 2022-10-23 stsp 	}
 815 13b2bc37 2022-10-23 stsp 
 816 13b2bc37 2022-10-23 stsp 	memcpy(sha1, expected_sha1, SHA1_DIGEST_LENGTH);
 817 13b2bc37 2022-10-23 stsp 
 818 13b2bc37 2022-10-23 stsp 	w = write(outfd, expected_sha1, SHA1_DIGEST_LENGTH);
 819 13b2bc37 2022-10-23 stsp 	if (w == -1) {
 820 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("write");
 821 13b2bc37 2022-10-23 stsp 		goto done;
 822 13b2bc37 2022-10-23 stsp 	}
 823 13b2bc37 2022-10-23 stsp 	if (w != SHA1_DIGEST_LENGTH) {
 824 13b2bc37 2022-10-23 stsp 		err = got_error(GOT_ERR_IO);
 825 13b2bc37 2022-10-23 stsp 		goto done;
 826 13b2bc37 2022-10-23 stsp 	}
 827 13b2bc37 2022-10-23 stsp 
 828 13b2bc37 2022-10-23 stsp 	*outsize += SHA1_DIGEST_LENGTH;
 829 13b2bc37 2022-10-23 stsp 
 830 13b2bc37 2022-10-23 stsp 	if (fsync(outfd) == -1) {
 831 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("fsync");
 832 13b2bc37 2022-10-23 stsp 		goto done;
 833 13b2bc37 2022-10-23 stsp 	}
 834 13b2bc37 2022-10-23 stsp 	if (lseek(outfd, 0L, SEEK_SET) == -1) {
 835 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("lseek");
 836 13b2bc37 2022-10-23 stsp 		goto done;
 837 13b2bc37 2022-10-23 stsp 	}
 838 13b2bc37 2022-10-23 stsp done:
 839 13b2bc37 2022-10-23 stsp 	buf_free(buf);
 840 13b2bc37 2022-10-23 stsp 	return err;
 841 13b2bc37 2022-10-23 stsp }
 842 13b2bc37 2022-10-23 stsp 
 843 13b2bc37 2022-10-23 stsp static const struct got_error *
 844 1a52c9bf 2022-12-30 stsp report_pack_status(const struct got_error *unpack_err)
 845 13b2bc37 2022-10-23 stsp {
 846 13b2bc37 2022-10-23 stsp 	const struct got_error *err = NULL;
 847 1a52c9bf 2022-12-30 stsp 	struct repo_write_client *client = &repo_write_client;
 848 13b2bc37 2022-10-23 stsp 	struct gotd_imsg_packfile_status istatus;
 849 13b2bc37 2022-10-23 stsp 	struct ibuf *wbuf;
 850 13b2bc37 2022-10-23 stsp 	struct imsgbuf ibuf;
 851 13b2bc37 2022-10-23 stsp 	const char *unpack_ok = "unpack ok\n";
 852 13b2bc37 2022-10-23 stsp 	size_t len;
 853 e26970cc 2023-01-10 op 
 854 13b2bc37 2022-10-23 stsp 	imsg_init(&ibuf, client->fd);
 855 13b2bc37 2022-10-23 stsp 
 856 13b2bc37 2022-10-23 stsp 	if (unpack_err)
 857 13b2bc37 2022-10-23 stsp 		istatus.reason_len = strlen(unpack_err->msg);
 858 13b2bc37 2022-10-23 stsp 	else
 859 13b2bc37 2022-10-23 stsp 		istatus.reason_len = strlen(unpack_ok);
 860 13b2bc37 2022-10-23 stsp 
 861 13b2bc37 2022-10-23 stsp 	len = sizeof(istatus) + istatus.reason_len;
 862 13b2bc37 2022-10-23 stsp 	wbuf = imsg_create(&ibuf, GOTD_IMSG_PACKFILE_STATUS, PROC_REPO_WRITE,
 863 13b2bc37 2022-10-23 stsp 	    repo_write.pid, len);
 864 13b2bc37 2022-10-23 stsp 	if (wbuf == NULL) {
 865 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("imsg_create PACKFILE_STATUS");
 866 13b2bc37 2022-10-23 stsp 		goto done;
 867 13b2bc37 2022-10-23 stsp 	}
 868 13b2bc37 2022-10-23 stsp 
 869 13b2bc37 2022-10-23 stsp 	if (imsg_add(wbuf, &istatus, sizeof(istatus)) == -1) {
 870 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("imsg_add PACKFILE_STATUS");
 871 13b2bc37 2022-10-23 stsp 		goto done;
 872 13b2bc37 2022-10-23 stsp 	}
 873 13b2bc37 2022-10-23 stsp 
 874 13b2bc37 2022-10-23 stsp 	if (imsg_add(wbuf, err ? err->msg : unpack_ok,
 875 13b2bc37 2022-10-23 stsp 	    istatus.reason_len) == -1) {
 876 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("imsg_add PACKFILE_STATUS");
 877 13b2bc37 2022-10-23 stsp 		goto done;
 878 13b2bc37 2022-10-23 stsp 	}
 879 13b2bc37 2022-10-23 stsp 
 880 13b2bc37 2022-10-23 stsp 	wbuf->fd = -1;
 881 13b2bc37 2022-10-23 stsp 	imsg_close(&ibuf, wbuf);
 882 13b2bc37 2022-10-23 stsp 
 883 13b2bc37 2022-10-23 stsp 	err = gotd_imsg_flush(&ibuf);
 884 13b2bc37 2022-10-23 stsp done:
 885 13b2bc37 2022-10-23 stsp 	imsg_clear(&ibuf);
 886 13b2bc37 2022-10-23 stsp 	return err;
 887 13b2bc37 2022-10-23 stsp }
 888 13b2bc37 2022-10-23 stsp 
 889 13b2bc37 2022-10-23 stsp static const struct got_error *
 890 0ff2c315 2023-01-18 stsp recv_packfile(int *have_packfile, struct imsg *imsg)
 891 13b2bc37 2022-10-23 stsp {
 892 13b2bc37 2022-10-23 stsp 	const struct got_error *err = NULL, *unpack_err;
 893 1a52c9bf 2022-12-30 stsp 	struct repo_write_client *client = &repo_write_client;
 894 13b2bc37 2022-10-23 stsp 	struct gotd_imsg_recv_packfile ireq;
 895 13b2bc37 2022-10-23 stsp 	FILE *tempfiles[3] = { NULL, NULL, NULL };
 896 13b2bc37 2022-10-23 stsp 	struct repo_tempfile {
 897 13b2bc37 2022-10-23 stsp 		int fd;
 898 13b2bc37 2022-10-23 stsp 		int idx;
 899 13b2bc37 2022-10-23 stsp 	} repo_tempfiles[3] = { { - 1, - 1 }, { - 1, - 1 }, { - 1, - 1 }, };
 900 13b2bc37 2022-10-23 stsp 	int i;
 901 13b2bc37 2022-10-23 stsp 	size_t datalen;
 902 13b2bc37 2022-10-23 stsp 	struct imsgbuf ibuf;
 903 13b2bc37 2022-10-23 stsp 	struct got_ratelimit rl;
 904 13b2bc37 2022-10-23 stsp 	struct got_pack *pack = NULL;
 905 13b2bc37 2022-10-23 stsp 	off_t pack_filesize = 0;
 906 0ff2c315 2023-01-18 stsp 	uint32_t nobj = 0;
 907 13b2bc37 2022-10-23 stsp 
 908 13b2bc37 2022-10-23 stsp 	log_debug("packfile request received");
 909 13b2bc37 2022-10-23 stsp 
 910 0ff2c315 2023-01-18 stsp 	*have_packfile = 0;
 911 13b2bc37 2022-10-23 stsp 	got_ratelimit_init(&rl, 2, 0);
 912 13b2bc37 2022-10-23 stsp 
 913 13b2bc37 2022-10-23 stsp 	datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
 914 13b2bc37 2022-10-23 stsp 	if (datalen != sizeof(ireq))
 915 13b2bc37 2022-10-23 stsp 		return got_error(GOT_ERR_PRIVSEP_LEN);
 916 13b2bc37 2022-10-23 stsp 	memcpy(&ireq, imsg->data, sizeof(ireq));
 917 13b2bc37 2022-10-23 stsp 
 918 1a52c9bf 2022-12-30 stsp 	if (client->pack_pipe == -1 || client->packidx_fd == -1)
 919 13b2bc37 2022-10-23 stsp 		return got_error(GOT_ERR_PRIVSEP_NO_FD);
 920 13b2bc37 2022-10-23 stsp 
 921 1a52c9bf 2022-12-30 stsp 	imsg_init(&ibuf, client->fd);
 922 13b2bc37 2022-10-23 stsp 
 923 13b2bc37 2022-10-23 stsp 	if (imsg->fd == -1)
 924 13b2bc37 2022-10-23 stsp 		return got_error(GOT_ERR_PRIVSEP_NO_FD);
 925 13b2bc37 2022-10-23 stsp 
 926 1a52c9bf 2022-12-30 stsp 	pack = &client->pack;
 927 13b2bc37 2022-10-23 stsp 	memset(pack, 0, sizeof(*pack));
 928 13b2bc37 2022-10-23 stsp 	pack->fd = imsg->fd;
 929 13b2bc37 2022-10-23 stsp 	err = got_delta_cache_alloc(&pack->delta_cache);
 930 13b2bc37 2022-10-23 stsp 	if (err)
 931 13b2bc37 2022-10-23 stsp 		return err;
 932 13b2bc37 2022-10-23 stsp 
 933 13b2bc37 2022-10-23 stsp 	for (i = 0; i < nitems(repo_tempfiles); i++) {
 934 13b2bc37 2022-10-23 stsp 		struct repo_tempfile *t = &repo_tempfiles[i];
 935 13b2bc37 2022-10-23 stsp 		err = got_repo_temp_fds_get(&t->fd, &t->idx, repo_write.repo);
 936 13b2bc37 2022-10-23 stsp 		if (err)
 937 13b2bc37 2022-10-23 stsp 			goto done;
 938 13b2bc37 2022-10-23 stsp 	}
 939 13b2bc37 2022-10-23 stsp 
 940 13b2bc37 2022-10-23 stsp 	for (i = 0; i < nitems(tempfiles); i++) {
 941 13b2bc37 2022-10-23 stsp 		int fd = dup(repo_tempfiles[i].fd);
 942 13b2bc37 2022-10-23 stsp 		FILE *f;
 943 13b2bc37 2022-10-23 stsp 		if (fd == -1) {
 944 13b2bc37 2022-10-23 stsp 			err = got_error_from_errno("dup");
 945 13b2bc37 2022-10-23 stsp 			goto done;
 946 13b2bc37 2022-10-23 stsp 		}
 947 13b2bc37 2022-10-23 stsp 		f = fdopen(fd, "w+");
 948 13b2bc37 2022-10-23 stsp 		if (f == NULL) {
 949 13b2bc37 2022-10-23 stsp 			err = got_error_from_errno("dup");
 950 13b2bc37 2022-10-23 stsp 			close(fd);
 951 13b2bc37 2022-10-23 stsp 			goto done;
 952 13b2bc37 2022-10-23 stsp 		}
 953 13b2bc37 2022-10-23 stsp 		tempfiles[i] = f;
 954 13b2bc37 2022-10-23 stsp 	}
 955 13b2bc37 2022-10-23 stsp 
 956 13b2bc37 2022-10-23 stsp 	err = gotd_imsg_flush(&ibuf);
 957 13b2bc37 2022-10-23 stsp 	if (err)
 958 13b2bc37 2022-10-23 stsp 		goto done;
 959 13b2bc37 2022-10-23 stsp 
 960 13b2bc37 2022-10-23 stsp 	log_debug("receiving pack data");
 961 0ff2c315 2023-01-18 stsp 	unpack_err = recv_packdata(&pack_filesize, &nobj,
 962 0ff2c315 2023-01-18 stsp 	    client->pack_sha1, client->pack_pipe, pack->fd);
 963 13b2bc37 2022-10-23 stsp 	if (ireq.report_status) {
 964 1a52c9bf 2022-12-30 stsp 		err = report_pack_status(unpack_err);
 965 13b2bc37 2022-10-23 stsp 		if (err) {
 966 13b2bc37 2022-10-23 stsp 			/* Git clients hang up after sending the pack file. */
 967 13b2bc37 2022-10-23 stsp 			if (err->code == GOT_ERR_EOF)
 968 13b2bc37 2022-10-23 stsp 				err = NULL;
 969 13b2bc37 2022-10-23 stsp 		}
 970 13b2bc37 2022-10-23 stsp 	}
 971 13b2bc37 2022-10-23 stsp 	if (unpack_err)
 972 13b2bc37 2022-10-23 stsp 		err = unpack_err;
 973 13b2bc37 2022-10-23 stsp 	if (err)
 974 13b2bc37 2022-10-23 stsp 		goto done;
 975 13b2bc37 2022-10-23 stsp 
 976 13b2bc37 2022-10-23 stsp 	log_debug("pack data received");
 977 0ff2c315 2023-01-18 stsp 
 978 0ff2c315 2023-01-18 stsp 	/*
 979 0ff2c315 2023-01-18 stsp 	 * Clients which are creating new references only will
 980 0ff2c315 2023-01-18 stsp 	 * send us an empty pack file.
 981 0ff2c315 2023-01-18 stsp 	 */
 982 0ff2c315 2023-01-18 stsp 	if (nobj == 0 &&
 983 0ff2c315 2023-01-18 stsp 	    pack_filesize == sizeof(struct got_packfile_hdr) &&
 984 0ff2c315 2023-01-18 stsp 	    client->nref_updates > 0 &&
 985 0ff2c315 2023-01-18 stsp 	    client->nref_updates == client->nref_new)
 986 0ff2c315 2023-01-18 stsp 		goto done;
 987 13b2bc37 2022-10-23 stsp 
 988 9a8e357c 2023-01-28 op 	/*
 989 9a8e357c 2023-01-28 op 	 * Clients which are deleting references only will send
 990 9a8e357c 2023-01-28 op 	 * no pack file.
 991 9a8e357c 2023-01-28 op 	 */
 992 9a8e357c 2023-01-28 op 	if (nobj == 0 &&
 993 9a8e357c 2023-01-28 op 	    client->nref_del > 0 &&
 994 9a8e357c 2023-01-28 op 	    client->nref_updates == client->nref_del)
 995 9a8e357c 2023-01-28 op 		goto done;
 996 9a8e357c 2023-01-28 op 
 997 13b2bc37 2022-10-23 stsp 	pack->filesize = pack_filesize;
 998 0ff2c315 2023-01-18 stsp 	*have_packfile = 1;
 999 13b2bc37 2022-10-23 stsp 
1000 ad4cc361 2022-10-27 op 	log_debug("begin indexing pack (%lld bytes in size)",
1001 ad4cc361 2022-10-27 op 	    (long long)pack->filesize);
1002 1a52c9bf 2022-12-30 stsp 	err = got_pack_index(pack, client->packidx_fd,
1003 1a52c9bf 2022-12-30 stsp 	    tempfiles[0], tempfiles[1], tempfiles[2], client->pack_sha1,
1004 13b2bc37 2022-10-23 stsp 	    pack_index_progress, NULL, &rl);
1005 13b2bc37 2022-10-23 stsp 	if (err)
1006 13b2bc37 2022-10-23 stsp 		goto done;
1007 13b2bc37 2022-10-23 stsp 	log_debug("done indexing pack");
1008 13b2bc37 2022-10-23 stsp 
1009 1a52c9bf 2022-12-30 stsp 	if (fsync(client->packidx_fd) == -1) {
1010 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("fsync");
1011 13b2bc37 2022-10-23 stsp 		goto done;
1012 13b2bc37 2022-10-23 stsp 	}
1013 1a52c9bf 2022-12-30 stsp 	if (lseek(client->packidx_fd, 0L, SEEK_SET) == -1)
1014 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("lseek");
1015 13b2bc37 2022-10-23 stsp done:
1016 1a52c9bf 2022-12-30 stsp 	if (close(client->pack_pipe) == -1 && err == NULL)
1017 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("close");
1018 1a52c9bf 2022-12-30 stsp 	client->pack_pipe = -1;
1019 13b2bc37 2022-10-23 stsp 	for (i = 0; i < nitems(repo_tempfiles); i++) {
1020 13b2bc37 2022-10-23 stsp 		struct repo_tempfile *t = &repo_tempfiles[i];
1021 13b2bc37 2022-10-23 stsp 		if (t->idx != -1)
1022 13b2bc37 2022-10-23 stsp 			got_repo_temp_fds_put(t->idx, repo_write.repo);
1023 13b2bc37 2022-10-23 stsp 	}
1024 13b2bc37 2022-10-23 stsp 	for (i = 0; i < nitems(tempfiles); i++) {
1025 13b2bc37 2022-10-23 stsp 		if (tempfiles[i] && fclose(tempfiles[i]) == EOF && err == NULL)
1026 13b2bc37 2022-10-23 stsp 			err = got_error_from_errno("fclose");
1027 13b2bc37 2022-10-23 stsp 	}
1028 13b2bc37 2022-10-23 stsp 	if (err)
1029 13b2bc37 2022-10-23 stsp 		got_pack_close(pack);
1030 13b2bc37 2022-10-23 stsp 	imsg_clear(&ibuf);
1031 13b2bc37 2022-10-23 stsp 	return err;
1032 13b2bc37 2022-10-23 stsp }
1033 13b2bc37 2022-10-23 stsp 
1034 13b2bc37 2022-10-23 stsp static const struct got_error *
1035 1a52c9bf 2022-12-30 stsp verify_packfile(void)
1036 13b2bc37 2022-10-23 stsp {
1037 13b2bc37 2022-10-23 stsp 	const struct got_error *err = NULL, *close_err;
1038 1a52c9bf 2022-12-30 stsp 	struct repo_write_client *client = &repo_write_client;
1039 13b2bc37 2022-10-23 stsp 	struct gotd_ref_update *ref_update;
1040 13b2bc37 2022-10-23 stsp 	struct got_packidx *packidx = NULL;
1041 13b2bc37 2022-10-23 stsp 	struct stat sb;
1042 13b2bc37 2022-10-23 stsp 	char *id_str = NULL;
1043 13b2bc37 2022-10-23 stsp 	int idx = -1;
1044 13b2bc37 2022-10-23 stsp 
1045 13b2bc37 2022-10-23 stsp 	if (STAILQ_EMPTY(&client->ref_updates)) {
1046 13b2bc37 2022-10-23 stsp 		return got_error_msg(GOT_ERR_BAD_REQUEST,
1047 13b2bc37 2022-10-23 stsp 		    "cannot verify pack file without any ref-updates");
1048 13b2bc37 2022-10-23 stsp 	}
1049 13b2bc37 2022-10-23 stsp 
1050 13b2bc37 2022-10-23 stsp 	if (client->pack.fd == -1) {
1051 13b2bc37 2022-10-23 stsp 		return got_error_msg(GOT_ERR_BAD_REQUEST,
1052 13b2bc37 2022-10-23 stsp 		    "invalid pack file handle during pack verification");
1053 13b2bc37 2022-10-23 stsp 	}
1054 13b2bc37 2022-10-23 stsp 	if (client->packidx_fd == -1) {
1055 13b2bc37 2022-10-23 stsp 		return got_error_msg(GOT_ERR_BAD_REQUEST,
1056 13b2bc37 2022-10-23 stsp 		    "invalid pack index handle during pack verification");
1057 13b2bc37 2022-10-23 stsp 	}
1058 13b2bc37 2022-10-23 stsp 
1059 13b2bc37 2022-10-23 stsp 	if (fstat(client->packidx_fd, &sb) == -1)
1060 13b2bc37 2022-10-23 stsp 		return got_error_from_errno("pack index fstat");
1061 13b2bc37 2022-10-23 stsp 
1062 13b2bc37 2022-10-23 stsp 	packidx = malloc(sizeof(*packidx));
1063 13b2bc37 2022-10-23 stsp 	memset(packidx, 0, sizeof(*packidx));
1064 13b2bc37 2022-10-23 stsp 	packidx->fd = client->packidx_fd;
1065 13b2bc37 2022-10-23 stsp 	client->packidx_fd = -1;
1066 13b2bc37 2022-10-23 stsp 	packidx->len = sb.st_size;
1067 e26970cc 2023-01-10 op 
1068 13b2bc37 2022-10-23 stsp 	err = got_packidx_init_hdr(packidx, 1, client->pack.filesize);
1069 13b2bc37 2022-10-23 stsp 	if (err)
1070 13b2bc37 2022-10-23 stsp 		return err;
1071 13b2bc37 2022-10-23 stsp 
1072 13b2bc37 2022-10-23 stsp 	STAILQ_FOREACH(ref_update, &client->ref_updates, entry) {
1073 9a8e357c 2023-01-28 op 		if (ref_update->delete_ref)
1074 9a8e357c 2023-01-28 op 			continue;
1075 9a8e357c 2023-01-28 op 
1076 13b2bc37 2022-10-23 stsp 		err = got_object_id_str(&id_str, &ref_update->new_id);
1077 13b2bc37 2022-10-23 stsp 		if (err)
1078 13b2bc37 2022-10-23 stsp 			goto done;
1079 13b2bc37 2022-10-23 stsp 
1080 13b2bc37 2022-10-23 stsp 		idx = got_packidx_get_object_idx(packidx, &ref_update->new_id);
1081 13b2bc37 2022-10-23 stsp 		if (idx == -1) {
1082 13b2bc37 2022-10-23 stsp 			err = got_error_fmt(GOT_ERR_BAD_PACKFILE,
1083 13b2bc37 2022-10-23 stsp 			    "advertised object %s is missing from pack file",
1084 13b2bc37 2022-10-23 stsp 			    id_str);
1085 13b2bc37 2022-10-23 stsp 			goto done;
1086 13b2bc37 2022-10-23 stsp 		}
1087 13b2bc37 2022-10-23 stsp 	}
1088 13b2bc37 2022-10-23 stsp 
1089 e26970cc 2023-01-10 op done:
1090 13b2bc37 2022-10-23 stsp 	close_err = got_packidx_close(packidx);
1091 13b2bc37 2022-10-23 stsp 	if (close_err && err == NULL)
1092 13b2bc37 2022-10-23 stsp 		err = close_err;
1093 13b2bc37 2022-10-23 stsp 	free(id_str);
1094 13b2bc37 2022-10-23 stsp 	return err;
1095 13b2bc37 2022-10-23 stsp }
1096 13b2bc37 2022-10-23 stsp 
1097 13b2bc37 2022-10-23 stsp static const struct got_error *
1098 1a52c9bf 2022-12-30 stsp install_packfile(struct gotd_imsgev *iev)
1099 13b2bc37 2022-10-23 stsp {
1100 1a52c9bf 2022-12-30 stsp 	struct repo_write_client *client = &repo_write_client;
1101 13b2bc37 2022-10-23 stsp 	struct gotd_imsg_packfile_install inst;
1102 13b2bc37 2022-10-23 stsp 	int ret;
1103 13b2bc37 2022-10-23 stsp 
1104 13b2bc37 2022-10-23 stsp 	memset(&inst, 0, sizeof(inst));
1105 13b2bc37 2022-10-23 stsp 	inst.client_id = client->id;
1106 13b2bc37 2022-10-23 stsp 	memcpy(inst.pack_sha1, client->pack_sha1, SHA1_DIGEST_LENGTH);
1107 13b2bc37 2022-10-23 stsp 
1108 13b2bc37 2022-10-23 stsp 	ret = gotd_imsg_compose_event(iev, GOTD_IMSG_PACKFILE_INSTALL,
1109 13b2bc37 2022-10-23 stsp 	    PROC_REPO_WRITE, -1, &inst, sizeof(inst));
1110 13b2bc37 2022-10-23 stsp 	if (ret == -1)
1111 13b2bc37 2022-10-23 stsp 		return got_error_from_errno("imsg_compose PACKFILE_INSTALL");
1112 13b2bc37 2022-10-23 stsp 
1113 13b2bc37 2022-10-23 stsp 	return NULL;
1114 13b2bc37 2022-10-23 stsp }
1115 13b2bc37 2022-10-23 stsp 
1116 13b2bc37 2022-10-23 stsp static const struct got_error *
1117 1a52c9bf 2022-12-30 stsp send_ref_updates_start(int nref_updates, struct gotd_imsgev *iev)
1118 13b2bc37 2022-10-23 stsp {
1119 1a52c9bf 2022-12-30 stsp 	struct repo_write_client *client = &repo_write_client;
1120 13b2bc37 2022-10-23 stsp 	struct gotd_imsg_ref_updates_start istart;
1121 13b2bc37 2022-10-23 stsp 	int ret;
1122 13b2bc37 2022-10-23 stsp 
1123 13b2bc37 2022-10-23 stsp 	memset(&istart, 0, sizeof(istart));
1124 13b2bc37 2022-10-23 stsp 	istart.nref_updates = nref_updates;
1125 13b2bc37 2022-10-23 stsp 	istart.client_id = client->id;
1126 13b2bc37 2022-10-23 stsp 
1127 13b2bc37 2022-10-23 stsp 	ret = gotd_imsg_compose_event(iev, GOTD_IMSG_REF_UPDATES_START,
1128 13b2bc37 2022-10-23 stsp 	    PROC_REPO_WRITE, -1, &istart, sizeof(istart));
1129 13b2bc37 2022-10-23 stsp 	if (ret == -1)
1130 13b2bc37 2022-10-23 stsp 		return got_error_from_errno("imsg_compose REF_UPDATES_START");
1131 13b2bc37 2022-10-23 stsp 
1132 13b2bc37 2022-10-23 stsp 	return NULL;
1133 13b2bc37 2022-10-23 stsp }
1134 13b2bc37 2022-10-23 stsp 
1135 13b2bc37 2022-10-23 stsp 
1136 13b2bc37 2022-10-23 stsp static const struct got_error *
1137 1a52c9bf 2022-12-30 stsp send_ref_update(struct gotd_ref_update *ref_update, struct gotd_imsgev *iev)
1138 13b2bc37 2022-10-23 stsp {
1139 1a52c9bf 2022-12-30 stsp 	struct repo_write_client *client = &repo_write_client;
1140 13b2bc37 2022-10-23 stsp 	struct gotd_imsg_ref_update iref;
1141 13b2bc37 2022-10-23 stsp 	const char *refname = got_ref_get_name(ref_update->ref);
1142 13b2bc37 2022-10-23 stsp 	struct ibuf *wbuf;
1143 13b2bc37 2022-10-23 stsp 	size_t len;
1144 13b2bc37 2022-10-23 stsp 
1145 13b2bc37 2022-10-23 stsp 	memset(&iref, 0, sizeof(iref));
1146 13b2bc37 2022-10-23 stsp 	memcpy(iref.old_id, ref_update->old_id.sha1, SHA1_DIGEST_LENGTH);
1147 13b2bc37 2022-10-23 stsp 	memcpy(iref.new_id, ref_update->new_id.sha1, SHA1_DIGEST_LENGTH);
1148 13b2bc37 2022-10-23 stsp 	iref.ref_is_new = ref_update->ref_is_new;
1149 9a8e357c 2023-01-28 op 	iref.delete_ref = ref_update->delete_ref;
1150 13b2bc37 2022-10-23 stsp 	iref.client_id = client->id;
1151 13b2bc37 2022-10-23 stsp 	iref.name_len = strlen(refname);
1152 13b2bc37 2022-10-23 stsp 
1153 13b2bc37 2022-10-23 stsp 	len = sizeof(iref) + iref.name_len;
1154 13b2bc37 2022-10-23 stsp 	wbuf = imsg_create(&iev->ibuf, GOTD_IMSG_REF_UPDATE, PROC_REPO_WRITE,
1155 13b2bc37 2022-10-23 stsp 	    repo_write.pid, len);
1156 13b2bc37 2022-10-23 stsp 	if (wbuf == NULL)
1157 13b2bc37 2022-10-23 stsp 		return got_error_from_errno("imsg_create REF_UPDATE");
1158 13b2bc37 2022-10-23 stsp 
1159 13b2bc37 2022-10-23 stsp 	if (imsg_add(wbuf, &iref, sizeof(iref)) == -1)
1160 13b2bc37 2022-10-23 stsp 		return got_error_from_errno("imsg_add REF_UPDATE");
1161 13b2bc37 2022-10-23 stsp 	if (imsg_add(wbuf, refname, iref.name_len) == -1)
1162 13b2bc37 2022-10-23 stsp 		return got_error_from_errno("imsg_add REF_UPDATE");
1163 13b2bc37 2022-10-23 stsp 
1164 13b2bc37 2022-10-23 stsp 	wbuf->fd = -1;
1165 13b2bc37 2022-10-23 stsp 	imsg_close(&iev->ibuf, wbuf);
1166 13b2bc37 2022-10-23 stsp 
1167 13b2bc37 2022-10-23 stsp 	gotd_imsg_event_add(iev);
1168 13b2bc37 2022-10-23 stsp 	return NULL;
1169 13b2bc37 2022-10-23 stsp }
1170 13b2bc37 2022-10-23 stsp 
1171 13b2bc37 2022-10-23 stsp static const struct got_error *
1172 1a52c9bf 2022-12-30 stsp update_refs(struct gotd_imsgev *iev)
1173 13b2bc37 2022-10-23 stsp {
1174 13b2bc37 2022-10-23 stsp 	const struct got_error *err = NULL;
1175 1a52c9bf 2022-12-30 stsp 	struct repo_write_client *client = &repo_write_client;
1176 13b2bc37 2022-10-23 stsp 	struct gotd_ref_update *ref_update;
1177 13b2bc37 2022-10-23 stsp 
1178 1a52c9bf 2022-12-30 stsp 	err = send_ref_updates_start(client->nref_updates, iev);
1179 13b2bc37 2022-10-23 stsp 	if (err)
1180 13b2bc37 2022-10-23 stsp 		return err;
1181 13b2bc37 2022-10-23 stsp 
1182 13b2bc37 2022-10-23 stsp 	STAILQ_FOREACH(ref_update, &client->ref_updates, entry) {
1183 1a52c9bf 2022-12-30 stsp 		err = send_ref_update(ref_update, iev);
1184 13b2bc37 2022-10-23 stsp 		if (err)
1185 13b2bc37 2022-10-23 stsp 			goto done;
1186 13b2bc37 2022-10-23 stsp 	}
1187 13b2bc37 2022-10-23 stsp done:
1188 13b2bc37 2022-10-23 stsp 	return err;
1189 13b2bc37 2022-10-23 stsp }
1190 13b2bc37 2022-10-23 stsp 
1191 13b2bc37 2022-10-23 stsp static const struct got_error *
1192 13b2bc37 2022-10-23 stsp recv_disconnect(struct imsg *imsg)
1193 13b2bc37 2022-10-23 stsp {
1194 13b2bc37 2022-10-23 stsp 	const struct got_error *err = NULL;
1195 13b2bc37 2022-10-23 stsp 	struct gotd_imsg_disconnect idisconnect;
1196 13b2bc37 2022-10-23 stsp 	size_t datalen;
1197 1a52c9bf 2022-12-30 stsp 	int pack_pipe = -1, idxfd = -1;
1198 1a52c9bf 2022-12-30 stsp 	struct repo_write_client *client = &repo_write_client;
1199 13b2bc37 2022-10-23 stsp 
1200 13b2bc37 2022-10-23 stsp 	datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
1201 13b2bc37 2022-10-23 stsp 	if (datalen != sizeof(idisconnect))
1202 13b2bc37 2022-10-23 stsp 		return got_error(GOT_ERR_PRIVSEP_LEN);
1203 13b2bc37 2022-10-23 stsp 	memcpy(&idisconnect, imsg->data, sizeof(idisconnect));
1204 13b2bc37 2022-10-23 stsp 
1205 13b2bc37 2022-10-23 stsp 	log_debug("client disconnecting");
1206 13b2bc37 2022-10-23 stsp 
1207 13b2bc37 2022-10-23 stsp 	while (!STAILQ_EMPTY(&client->ref_updates)) {
1208 13b2bc37 2022-10-23 stsp 		struct gotd_ref_update *ref_update;
1209 13b2bc37 2022-10-23 stsp 		ref_update = STAILQ_FIRST(&client->ref_updates);
1210 13b2bc37 2022-10-23 stsp 		STAILQ_REMOVE_HEAD(&client->ref_updates, entry);
1211 13b2bc37 2022-10-23 stsp 		got_ref_close(ref_update->ref);
1212 13b2bc37 2022-10-23 stsp 		free(ref_update);
1213 13b2bc37 2022-10-23 stsp 	}
1214 13b2bc37 2022-10-23 stsp 	err = got_pack_close(&client->pack);
1215 1a52c9bf 2022-12-30 stsp 	if (client->fd != -1 && close(client->fd) == -1)
1216 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("close");
1217 1a52c9bf 2022-12-30 stsp 	pack_pipe = client->pack_pipe;
1218 7fec5f4a 2022-10-28 stsp 	if (pack_pipe != -1 && close(pack_pipe) == -1 && err == NULL)
1219 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("close");
1220 1a52c9bf 2022-12-30 stsp 	idxfd = client->packidx_fd;
1221 13b2bc37 2022-10-23 stsp 	if (idxfd != -1 && close(idxfd) == -1 && err == NULL)
1222 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("close");
1223 13b2bc37 2022-10-23 stsp 	return err;
1224 13b2bc37 2022-10-23 stsp }
1225 13b2bc37 2022-10-23 stsp 
1226 13b2bc37 2022-10-23 stsp static const struct got_error *
1227 1a52c9bf 2022-12-30 stsp receive_pack_pipe(struct imsg *imsg, struct gotd_imsgev *iev)
1228 13b2bc37 2022-10-23 stsp {
1229 1a52c9bf 2022-12-30 stsp 	struct repo_write_client *client = &repo_write_client;
1230 13b2bc37 2022-10-23 stsp 	struct gotd_imsg_packfile_pipe ireq;
1231 13b2bc37 2022-10-23 stsp 	size_t datalen;
1232 13b2bc37 2022-10-23 stsp 
1233 13b2bc37 2022-10-23 stsp 	log_debug("receving pack pipe descriptor");
1234 13b2bc37 2022-10-23 stsp 
1235 13b2bc37 2022-10-23 stsp 	if (imsg->fd == -1)
1236 13b2bc37 2022-10-23 stsp 		return got_error(GOT_ERR_PRIVSEP_NO_FD);
1237 13b2bc37 2022-10-23 stsp 
1238 13b2bc37 2022-10-23 stsp 	datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
1239 13b2bc37 2022-10-23 stsp 	if (datalen != sizeof(ireq))
1240 13b2bc37 2022-10-23 stsp 		return got_error(GOT_ERR_PRIVSEP_LEN);
1241 13b2bc37 2022-10-23 stsp 	memcpy(&ireq, imsg->data, sizeof(ireq));
1242 13b2bc37 2022-10-23 stsp 
1243 1a52c9bf 2022-12-30 stsp 	if (client->pack_pipe != -1)
1244 13b2bc37 2022-10-23 stsp 		return got_error(GOT_ERR_PRIVSEP_MSG);
1245 13b2bc37 2022-10-23 stsp 
1246 1a52c9bf 2022-12-30 stsp 	client->pack_pipe = imsg->fd;
1247 13b2bc37 2022-10-23 stsp 	return NULL;
1248 13b2bc37 2022-10-23 stsp }
1249 13b2bc37 2022-10-23 stsp 
1250 13b2bc37 2022-10-23 stsp static const struct got_error *
1251 1a52c9bf 2022-12-30 stsp receive_pack_idx(struct imsg *imsg, struct gotd_imsgev *iev)
1252 13b2bc37 2022-10-23 stsp {
1253 1a52c9bf 2022-12-30 stsp 	struct repo_write_client *client = &repo_write_client;
1254 13b2bc37 2022-10-23 stsp 	struct gotd_imsg_packidx_file ireq;
1255 13b2bc37 2022-10-23 stsp 	size_t datalen;
1256 13b2bc37 2022-10-23 stsp 
1257 13b2bc37 2022-10-23 stsp 	log_debug("receving pack index output file");
1258 13b2bc37 2022-10-23 stsp 
1259 13b2bc37 2022-10-23 stsp 	if (imsg->fd == -1)
1260 13b2bc37 2022-10-23 stsp 		return got_error(GOT_ERR_PRIVSEP_NO_FD);
1261 13b2bc37 2022-10-23 stsp 
1262 13b2bc37 2022-10-23 stsp 	datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
1263 13b2bc37 2022-10-23 stsp 	if (datalen != sizeof(ireq))
1264 13b2bc37 2022-10-23 stsp 		return got_error(GOT_ERR_PRIVSEP_LEN);
1265 13b2bc37 2022-10-23 stsp 	memcpy(&ireq, imsg->data, sizeof(ireq));
1266 13b2bc37 2022-10-23 stsp 
1267 1a52c9bf 2022-12-30 stsp 	if (client->packidx_fd != -1)
1268 13b2bc37 2022-10-23 stsp 		return got_error(GOT_ERR_PRIVSEP_MSG);
1269 13b2bc37 2022-10-23 stsp 
1270 1a52c9bf 2022-12-30 stsp 	client->packidx_fd = imsg->fd;
1271 13b2bc37 2022-10-23 stsp 	return NULL;
1272 13b2bc37 2022-10-23 stsp }
1273 13b2bc37 2022-10-23 stsp 
1274 13b2bc37 2022-10-23 stsp static void
1275 ae7c1b78 2023-01-10 stsp repo_write_dispatch_session(int fd, short event, void *arg)
1276 13b2bc37 2022-10-23 stsp {
1277 13b2bc37 2022-10-23 stsp 	const struct got_error *err = NULL;
1278 13b2bc37 2022-10-23 stsp 	struct gotd_imsgev *iev = arg;
1279 13b2bc37 2022-10-23 stsp 	struct imsgbuf *ibuf = &iev->ibuf;
1280 13b2bc37 2022-10-23 stsp 	struct imsg imsg;
1281 1a52c9bf 2022-12-30 stsp 	struct repo_write_client *client = &repo_write_client;
1282 13b2bc37 2022-10-23 stsp 	ssize_t n;
1283 0ff2c315 2023-01-18 stsp 	int shut = 0, have_packfile = 0;
1284 13b2bc37 2022-10-23 stsp 
1285 13b2bc37 2022-10-23 stsp 	if (event & EV_READ) {
1286 13b2bc37 2022-10-23 stsp 		if ((n = imsg_read(ibuf)) == -1 && errno != EAGAIN)
1287 13b2bc37 2022-10-23 stsp 			fatal("imsg_read error");
1288 13b2bc37 2022-10-23 stsp 		if (n == 0)	/* Connection closed. */
1289 13b2bc37 2022-10-23 stsp 			shut = 1;
1290 13b2bc37 2022-10-23 stsp 	}
1291 13b2bc37 2022-10-23 stsp 
1292 13b2bc37 2022-10-23 stsp 	if (event & EV_WRITE) {
1293 13b2bc37 2022-10-23 stsp 		n = msgbuf_write(&ibuf->w);
1294 13b2bc37 2022-10-23 stsp 		if (n == -1 && errno != EAGAIN)
1295 13b2bc37 2022-10-23 stsp 			fatal("msgbuf_write");
1296 13b2bc37 2022-10-23 stsp 		if (n == 0)	/* Connection closed. */
1297 13b2bc37 2022-10-23 stsp 			shut = 1;
1298 13b2bc37 2022-10-23 stsp 	}
1299 13b2bc37 2022-10-23 stsp 
1300 13b2bc37 2022-10-23 stsp 	for (;;) {
1301 13b2bc37 2022-10-23 stsp 		if ((n = imsg_get(ibuf, &imsg)) == -1)
1302 13b2bc37 2022-10-23 stsp 			fatal("%s: imsg_get error", __func__);
1303 13b2bc37 2022-10-23 stsp 		if (n == 0)	/* No more messages. */
1304 13b2bc37 2022-10-23 stsp 			break;
1305 13b2bc37 2022-10-23 stsp 
1306 1a52c9bf 2022-12-30 stsp 		if (imsg.hdr.type != GOTD_IMSG_LIST_REFS_INTERNAL &&
1307 1a52c9bf 2022-12-30 stsp 		    client->id == 0) {
1308 1a52c9bf 2022-12-30 stsp 			err = got_error(GOT_ERR_PRIVSEP_MSG);
1309 1a52c9bf 2022-12-30 stsp 			break;
1310 1a52c9bf 2022-12-30 stsp 		}
1311 1a52c9bf 2022-12-30 stsp 
1312 13b2bc37 2022-10-23 stsp 		switch (imsg.hdr.type) {
1313 13b2bc37 2022-10-23 stsp 		case GOTD_IMSG_LIST_REFS_INTERNAL:
1314 1a52c9bf 2022-12-30 stsp 			err = list_refs(&imsg);
1315 13b2bc37 2022-10-23 stsp 			if (err)
1316 13b2bc37 2022-10-23 stsp 				log_warnx("%s: ls-refs: %s", repo_write.title,
1317 13b2bc37 2022-10-23 stsp 				    err->msg);
1318 13b2bc37 2022-10-23 stsp 			break;
1319 13b2bc37 2022-10-23 stsp 		case GOTD_IMSG_REF_UPDATE:
1320 1a52c9bf 2022-12-30 stsp 			err = recv_ref_update(&imsg);
1321 13b2bc37 2022-10-23 stsp 			if (err)
1322 13b2bc37 2022-10-23 stsp 				log_warnx("%s: ref-update: %s",
1323 13b2bc37 2022-10-23 stsp 				    repo_write.title, err->msg);
1324 13b2bc37 2022-10-23 stsp 			break;
1325 13b2bc37 2022-10-23 stsp 		case GOTD_IMSG_PACKFILE_PIPE:
1326 1a52c9bf 2022-12-30 stsp 			err = receive_pack_pipe(&imsg, iev);
1327 13b2bc37 2022-10-23 stsp 			if (err) {
1328 13b2bc37 2022-10-23 stsp 				log_warnx("%s: receiving pack pipe: %s",
1329 13b2bc37 2022-10-23 stsp 				    repo_write.title, err->msg);
1330 13b2bc37 2022-10-23 stsp 				break;
1331 13b2bc37 2022-10-23 stsp 			}
1332 13b2bc37 2022-10-23 stsp 			break;
1333 13b2bc37 2022-10-23 stsp 		case GOTD_IMSG_PACKIDX_FILE:
1334 1a52c9bf 2022-12-30 stsp 			err = receive_pack_idx(&imsg, iev);
1335 13b2bc37 2022-10-23 stsp 			if (err) {
1336 13b2bc37 2022-10-23 stsp 				log_warnx("%s: receiving pack index: %s",
1337 13b2bc37 2022-10-23 stsp 				    repo_write.title, err->msg);
1338 13b2bc37 2022-10-23 stsp 				break;
1339 13b2bc37 2022-10-23 stsp 			}
1340 13b2bc37 2022-10-23 stsp 			break;
1341 13b2bc37 2022-10-23 stsp 		case GOTD_IMSG_RECV_PACKFILE:
1342 0ff2c315 2023-01-18 stsp 			err = recv_packfile(&have_packfile, &imsg);
1343 13b2bc37 2022-10-23 stsp 			if (err) {
1344 13b2bc37 2022-10-23 stsp 				log_warnx("%s: receive packfile: %s",
1345 13b2bc37 2022-10-23 stsp 				    repo_write.title, err->msg);
1346 13b2bc37 2022-10-23 stsp 				break;
1347 13b2bc37 2022-10-23 stsp 			}
1348 0ff2c315 2023-01-18 stsp 			if (have_packfile) {
1349 0ff2c315 2023-01-18 stsp 				err = verify_packfile();
1350 0ff2c315 2023-01-18 stsp 				if (err) {
1351 0ff2c315 2023-01-18 stsp 					log_warnx("%s: verify packfile: %s",
1352 0ff2c315 2023-01-18 stsp 					    repo_write.title, err->msg);
1353 0ff2c315 2023-01-18 stsp 					break;
1354 0ff2c315 2023-01-18 stsp 				}
1355 0ff2c315 2023-01-18 stsp 				err = install_packfile(iev);
1356 0ff2c315 2023-01-18 stsp 				if (err) {
1357 0ff2c315 2023-01-18 stsp 					log_warnx("%s: install packfile: %s",
1358 0ff2c315 2023-01-18 stsp 					    repo_write.title, err->msg);
1359 0ff2c315 2023-01-18 stsp 					break;
1360 0ff2c315 2023-01-18 stsp 				}
1361 13b2bc37 2022-10-23 stsp 			}
1362 1a52c9bf 2022-12-30 stsp 			err = update_refs(iev);
1363 13b2bc37 2022-10-23 stsp 			if (err) {
1364 13b2bc37 2022-10-23 stsp 				log_warnx("%s: update refs: %s",
1365 13b2bc37 2022-10-23 stsp 				    repo_write.title, err->msg);
1366 13b2bc37 2022-10-23 stsp 			}
1367 13b2bc37 2022-10-23 stsp 			break;
1368 13b2bc37 2022-10-23 stsp 		case GOTD_IMSG_DISCONNECT:
1369 13b2bc37 2022-10-23 stsp 			err = recv_disconnect(&imsg);
1370 13b2bc37 2022-10-23 stsp 			if (err)
1371 13b2bc37 2022-10-23 stsp 				log_warnx("%s: disconnect: %s",
1372 13b2bc37 2022-10-23 stsp 				    repo_write.title, err->msg);
1373 ae7c1b78 2023-01-10 stsp 			shut = 1;
1374 ae7c1b78 2023-01-10 stsp 			break;
1375 ae7c1b78 2023-01-10 stsp 		default:
1376 ae7c1b78 2023-01-10 stsp 			log_debug("%s: unexpected imsg %d", repo_write.title,
1377 ae7c1b78 2023-01-10 stsp 			    imsg.hdr.type);
1378 ae7c1b78 2023-01-10 stsp 			break;
1379 ae7c1b78 2023-01-10 stsp 		}
1380 ae7c1b78 2023-01-10 stsp 
1381 ae7c1b78 2023-01-10 stsp 		imsg_free(&imsg);
1382 ae7c1b78 2023-01-10 stsp 	}
1383 ae7c1b78 2023-01-10 stsp 
1384 ae7c1b78 2023-01-10 stsp 	if (!shut && check_cancelled(NULL) == NULL) {
1385 ae7c1b78 2023-01-10 stsp 		if (err &&
1386 ae7c1b78 2023-01-10 stsp 		    gotd_imsg_send_error_event(iev, PROC_REPO_WRITE,
1387 ae7c1b78 2023-01-10 stsp 		        client->id, err) == -1) {
1388 ae7c1b78 2023-01-10 stsp 			log_warnx("could not send error to parent: %s",
1389 ae7c1b78 2023-01-10 stsp 			    err->msg);
1390 ae7c1b78 2023-01-10 stsp 		}
1391 ae7c1b78 2023-01-10 stsp 		gotd_imsg_event_add(iev);
1392 ae7c1b78 2023-01-10 stsp 	} else {
1393 ae7c1b78 2023-01-10 stsp 		/* This pipe is dead. Remove its event handler */
1394 ae7c1b78 2023-01-10 stsp 		event_del(&iev->ev);
1395 ae7c1b78 2023-01-10 stsp 		event_loopexit(NULL);
1396 ae7c1b78 2023-01-10 stsp 	}
1397 ae7c1b78 2023-01-10 stsp }
1398 ae7c1b78 2023-01-10 stsp 
1399 ae7c1b78 2023-01-10 stsp static const struct got_error *
1400 ae7c1b78 2023-01-10 stsp recv_connect(struct imsg *imsg)
1401 ae7c1b78 2023-01-10 stsp {
1402 ae7c1b78 2023-01-10 stsp 	struct gotd_imsgev *iev = &repo_write.session_iev;
1403 ae7c1b78 2023-01-10 stsp 	size_t datalen;
1404 ae7c1b78 2023-01-10 stsp 
1405 ae7c1b78 2023-01-10 stsp 	datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
1406 ae7c1b78 2023-01-10 stsp 	if (datalen != 0)
1407 ae7c1b78 2023-01-10 stsp 		return got_error(GOT_ERR_PRIVSEP_LEN);
1408 ae7c1b78 2023-01-10 stsp 	if (imsg->fd == -1)
1409 ae7c1b78 2023-01-10 stsp 		return got_error(GOT_ERR_PRIVSEP_NO_FD);
1410 ae7c1b78 2023-01-10 stsp 
1411 ae7c1b78 2023-01-10 stsp 	if (repo_write.session_fd != -1)
1412 ae7c1b78 2023-01-10 stsp 		return got_error(GOT_ERR_PRIVSEP_MSG);
1413 ae7c1b78 2023-01-10 stsp 
1414 ae7c1b78 2023-01-10 stsp 	repo_write.session_fd = imsg->fd;
1415 ae7c1b78 2023-01-10 stsp 
1416 ae7c1b78 2023-01-10 stsp 	imsg_init(&iev->ibuf, repo_write.session_fd);
1417 ae7c1b78 2023-01-10 stsp 	iev->handler = repo_write_dispatch_session;
1418 ae7c1b78 2023-01-10 stsp 	iev->events = EV_READ;
1419 ae7c1b78 2023-01-10 stsp 	iev->handler_arg = NULL;
1420 ae7c1b78 2023-01-10 stsp 	event_set(&iev->ev, iev->ibuf.fd, EV_READ,
1421 ae7c1b78 2023-01-10 stsp 	    repo_write_dispatch_session, iev);
1422 ae7c1b78 2023-01-10 stsp 	gotd_imsg_event_add(iev);
1423 ae7c1b78 2023-01-10 stsp 
1424 ae7c1b78 2023-01-10 stsp 	return NULL;
1425 ae7c1b78 2023-01-10 stsp }
1426 ae7c1b78 2023-01-10 stsp 
1427 ae7c1b78 2023-01-10 stsp static void
1428 ae7c1b78 2023-01-10 stsp repo_write_dispatch(int fd, short event, void *arg)
1429 ae7c1b78 2023-01-10 stsp {
1430 ae7c1b78 2023-01-10 stsp 	const struct got_error *err = NULL;
1431 ae7c1b78 2023-01-10 stsp 	struct gotd_imsgev *iev = arg;
1432 ae7c1b78 2023-01-10 stsp 	struct imsgbuf *ibuf = &iev->ibuf;
1433 ae7c1b78 2023-01-10 stsp 	struct imsg imsg;
1434 ae7c1b78 2023-01-10 stsp 	ssize_t n;
1435 ae7c1b78 2023-01-10 stsp 	int shut = 0;
1436 ae7c1b78 2023-01-10 stsp 	struct repo_write_client *client = &repo_write_client;
1437 ae7c1b78 2023-01-10 stsp 
1438 ae7c1b78 2023-01-10 stsp 	if (event & EV_READ) {
1439 ae7c1b78 2023-01-10 stsp 		if ((n = imsg_read(ibuf)) == -1 && errno != EAGAIN)
1440 ae7c1b78 2023-01-10 stsp 			fatal("imsg_read error");
1441 ae7c1b78 2023-01-10 stsp 		if (n == 0)	/* Connection closed. */
1442 1a52c9bf 2022-12-30 stsp 			shut = 1;
1443 ae7c1b78 2023-01-10 stsp 	}
1444 ae7c1b78 2023-01-10 stsp 
1445 ae7c1b78 2023-01-10 stsp 	if (event & EV_WRITE) {
1446 ae7c1b78 2023-01-10 stsp 		n = msgbuf_write(&ibuf->w);
1447 ae7c1b78 2023-01-10 stsp 		if (n == -1 && errno != EAGAIN)
1448 ae7c1b78 2023-01-10 stsp 			fatal("msgbuf_write");
1449 ae7c1b78 2023-01-10 stsp 		if (n == 0)	/* Connection closed. */
1450 ae7c1b78 2023-01-10 stsp 			shut = 1;
1451 ae7c1b78 2023-01-10 stsp 	}
1452 ae7c1b78 2023-01-10 stsp 
1453 ae7c1b78 2023-01-10 stsp 	while (err == NULL && check_cancelled(NULL) == NULL) {
1454 ae7c1b78 2023-01-10 stsp 		if ((n = imsg_get(ibuf, &imsg)) == -1)
1455 ae7c1b78 2023-01-10 stsp 			fatal("%s: imsg_get", __func__);
1456 ae7c1b78 2023-01-10 stsp 		if (n == 0)	/* No more messages. */
1457 13b2bc37 2022-10-23 stsp 			break;
1458 ae7c1b78 2023-01-10 stsp 
1459 ae7c1b78 2023-01-10 stsp 		switch (imsg.hdr.type) {
1460 ae7c1b78 2023-01-10 stsp 		case GOTD_IMSG_CONNECT_REPO_CHILD:
1461 ae7c1b78 2023-01-10 stsp 			err = recv_connect(&imsg);
1462 ae7c1b78 2023-01-10 stsp 			break;
1463 13b2bc37 2022-10-23 stsp 		default:
1464 13b2bc37 2022-10-23 stsp 			log_debug("%s: unexpected imsg %d", repo_write.title,
1465 13b2bc37 2022-10-23 stsp 			    imsg.hdr.type);
1466 13b2bc37 2022-10-23 stsp 			break;
1467 13b2bc37 2022-10-23 stsp 		}
1468 13b2bc37 2022-10-23 stsp 
1469 13b2bc37 2022-10-23 stsp 		imsg_free(&imsg);
1470 13b2bc37 2022-10-23 stsp 	}
1471 13b2bc37 2022-10-23 stsp 
1472 13b2bc37 2022-10-23 stsp 	if (!shut && check_cancelled(NULL) == NULL) {
1473 13b2bc37 2022-10-23 stsp 		if (err &&
1474 13b2bc37 2022-10-23 stsp 		    gotd_imsg_send_error_event(iev, PROC_REPO_WRITE,
1475 1a52c9bf 2022-12-30 stsp 		        client->id, err) == -1) {
1476 13b2bc37 2022-10-23 stsp 			log_warnx("could not send error to parent: %s",
1477 13b2bc37 2022-10-23 stsp 			    err->msg);
1478 13b2bc37 2022-10-23 stsp 		}
1479 13b2bc37 2022-10-23 stsp 		gotd_imsg_event_add(iev);
1480 13b2bc37 2022-10-23 stsp 	} else {
1481 13b2bc37 2022-10-23 stsp 		/* This pipe is dead. Remove its event handler */
1482 13b2bc37 2022-10-23 stsp 		event_del(&iev->ev);
1483 13b2bc37 2022-10-23 stsp 		event_loopexit(NULL);
1484 13b2bc37 2022-10-23 stsp 	}
1485 13b2bc37 2022-10-23 stsp }
1486 13b2bc37 2022-10-23 stsp 
1487 13b2bc37 2022-10-23 stsp void
1488 eec68231 2022-12-14 stsp repo_write_main(const char *title, const char *repo_path,
1489 eec68231 2022-12-14 stsp     int *pack_fds, int *temp_fds)
1490 13b2bc37 2022-10-23 stsp {
1491 13b2bc37 2022-10-23 stsp 	const struct got_error *err = NULL;
1492 13b2bc37 2022-10-23 stsp 	struct gotd_imsgev iev;
1493 13b2bc37 2022-10-23 stsp 
1494 13b2bc37 2022-10-23 stsp 	repo_write.title = title;
1495 13b2bc37 2022-10-23 stsp 	repo_write.pid = getpid();
1496 13b2bc37 2022-10-23 stsp 	repo_write.pack_fds = pack_fds;
1497 13b2bc37 2022-10-23 stsp 	repo_write.temp_fds = temp_fds;
1498 ae7c1b78 2023-01-10 stsp 	repo_write.session_fd = -1;
1499 ae7c1b78 2023-01-10 stsp 	repo_write.session_iev.ibuf.fd = -1;
1500 13b2bc37 2022-10-23 stsp 
1501 1a52c9bf 2022-12-30 stsp 	STAILQ_INIT(&repo_write_client.ref_updates);
1502 13b2bc37 2022-10-23 stsp 
1503 eec68231 2022-12-14 stsp 	err = got_repo_open(&repo_write.repo, repo_path, NULL, pack_fds);
1504 13b2bc37 2022-10-23 stsp 	if (err)
1505 13b2bc37 2022-10-23 stsp 		goto done;
1506 13b2bc37 2022-10-23 stsp 	if (!got_repo_is_bare(repo_write.repo)) {
1507 13b2bc37 2022-10-23 stsp 		err = got_error_msg(GOT_ERR_NOT_GIT_REPO,
1508 13b2bc37 2022-10-23 stsp 		    "bare git repository required");
1509 13b2bc37 2022-10-23 stsp 		goto done;
1510 13b2bc37 2022-10-23 stsp 	}
1511 13b2bc37 2022-10-23 stsp 
1512 13b2bc37 2022-10-23 stsp 	got_repo_temp_fds_set(repo_write.repo, temp_fds);
1513 13b2bc37 2022-10-23 stsp 
1514 13b2bc37 2022-10-23 stsp 	signal(SIGINT, catch_sigint);
1515 13b2bc37 2022-10-23 stsp 	signal(SIGTERM, catch_sigterm);
1516 13b2bc37 2022-10-23 stsp 	signal(SIGPIPE, SIG_IGN);
1517 13b2bc37 2022-10-23 stsp 	signal(SIGHUP, SIG_IGN);
1518 13b2bc37 2022-10-23 stsp 
1519 8c6fc146 2022-11-17 stsp 	imsg_init(&iev.ibuf, GOTD_FILENO_MSG_PIPE);
1520 13b2bc37 2022-10-23 stsp 	iev.handler = repo_write_dispatch;
1521 13b2bc37 2022-10-23 stsp 	iev.events = EV_READ;
1522 13b2bc37 2022-10-23 stsp 	iev.handler_arg = NULL;
1523 13b2bc37 2022-10-23 stsp 	event_set(&iev.ev, iev.ibuf.fd, EV_READ, repo_write_dispatch, &iev);
1524 b50a2b46 2022-12-29 stsp 	if (gotd_imsg_compose_event(&iev, GOTD_IMSG_REPO_CHILD_READY,
1525 b50a2b46 2022-12-29 stsp 	    PROC_REPO_WRITE, -1, NULL, 0) == -1) {
1526 b50a2b46 2022-12-29 stsp 		err = got_error_from_errno("imsg compose REPO_CHILD_READY");
1527 13b2bc37 2022-10-23 stsp 		goto done;
1528 13b2bc37 2022-10-23 stsp 	}
1529 13b2bc37 2022-10-23 stsp 
1530 13b2bc37 2022-10-23 stsp 	event_dispatch();
1531 13b2bc37 2022-10-23 stsp done:
1532 13b2bc37 2022-10-23 stsp 	if (err)
1533 13b2bc37 2022-10-23 stsp 		log_warnx("%s: %s", title, err->msg);
1534 13b2bc37 2022-10-23 stsp 	repo_write_shutdown();
1535 13b2bc37 2022-10-23 stsp }
1536 13b2bc37 2022-10-23 stsp 
1537 13b2bc37 2022-10-23 stsp void
1538 13b2bc37 2022-10-23 stsp repo_write_shutdown(void)
1539 13b2bc37 2022-10-23 stsp {
1540 13b2bc37 2022-10-23 stsp 	log_debug("%s: shutting down", repo_write.title);
1541 13b2bc37 2022-10-23 stsp 	if (repo_write.repo)
1542 13b2bc37 2022-10-23 stsp 		got_repo_close(repo_write.repo);
1543 13b2bc37 2022-10-23 stsp 	got_repo_pack_fds_close(repo_write.pack_fds);
1544 8193d041 2022-10-30 stsp 	got_repo_temp_fds_close(repo_write.temp_fds);
1545 ae7c1b78 2023-01-10 stsp 	if (repo_write.session_fd != -1)
1546 ae7c1b78 2023-01-10 stsp 		close(repo_write.session_fd);
1547 13b2bc37 2022-10-23 stsp 	exit(0);
1548 13b2bc37 2022-10-23 stsp }