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 69c6accf 2023-02-04 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 13b2bc37 2022-10-23 stsp #include "got_lib_object.h"
  48 13b2bc37 2022-10-23 stsp #include "got_lib_object_cache.h"
  49 13b2bc37 2022-10-23 stsp #include "got_lib_ratelimit.h"
  50 13b2bc37 2022-10-23 stsp #include "got_lib_pack.h"
  51 13b2bc37 2022-10-23 stsp #include "got_lib_pack_index.h"
  52 13b2bc37 2022-10-23 stsp #include "got_lib_repository.h"
  53 13b2bc37 2022-10-23 stsp #include "got_lib_poll.h"
  54 13b2bc37 2022-10-23 stsp 
  55 1362b0e3 2023-02-04 op #include "got_lib_hash.h" /* XXX temp include for debugging */
  56 13b2bc37 2022-10-23 stsp 
  57 13b2bc37 2022-10-23 stsp #include "log.h"
  58 13b2bc37 2022-10-23 stsp #include "gotd.h"
  59 13b2bc37 2022-10-23 stsp #include "repo_write.h"
  60 13b2bc37 2022-10-23 stsp 
  61 13b2bc37 2022-10-23 stsp #ifndef nitems
  62 13b2bc37 2022-10-23 stsp #define nitems(_a)	(sizeof((_a)) / sizeof((_a)[0]))
  63 13b2bc37 2022-10-23 stsp #endif
  64 13b2bc37 2022-10-23 stsp 
  65 13b2bc37 2022-10-23 stsp static struct repo_write {
  66 13b2bc37 2022-10-23 stsp 	pid_t pid;
  67 13b2bc37 2022-10-23 stsp 	const char *title;
  68 13b2bc37 2022-10-23 stsp 	struct got_repository *repo;
  69 13b2bc37 2022-10-23 stsp 	int *pack_fds;
  70 13b2bc37 2022-10-23 stsp 	int *temp_fds;
  71 ae7c1b78 2023-01-10 stsp 	int session_fd;
  72 ae7c1b78 2023-01-10 stsp 	struct gotd_imsgev session_iev;
  73 13b2bc37 2022-10-23 stsp } repo_write;
  74 13b2bc37 2022-10-23 stsp 
  75 13b2bc37 2022-10-23 stsp struct gotd_ref_update {
  76 13b2bc37 2022-10-23 stsp 	STAILQ_ENTRY(gotd_ref_update) entry;
  77 13b2bc37 2022-10-23 stsp 	struct got_reference *ref;
  78 13b2bc37 2022-10-23 stsp 	int ref_is_new;
  79 9a8e357c 2023-01-28 op 	int delete_ref;
  80 13b2bc37 2022-10-23 stsp 	struct got_object_id old_id;
  81 13b2bc37 2022-10-23 stsp 	struct got_object_id new_id;
  82 13b2bc37 2022-10-23 stsp };
  83 13b2bc37 2022-10-23 stsp STAILQ_HEAD(gotd_ref_updates, gotd_ref_update);
  84 13b2bc37 2022-10-23 stsp 
  85 1a52c9bf 2022-12-30 stsp static struct repo_write_client {
  86 13b2bc37 2022-10-23 stsp 	uint32_t			 id;
  87 13b2bc37 2022-10-23 stsp 	int				 fd;
  88 7fec5f4a 2022-10-28 stsp 	int				 pack_pipe;
  89 13b2bc37 2022-10-23 stsp 	struct got_pack			 pack;
  90 3093e2d7 2023-02-04 op 	uint8_t				 pack_hash[SHA1_DIGEST_LENGTH];
  91 13b2bc37 2022-10-23 stsp 	int				 packidx_fd;
  92 13b2bc37 2022-10-23 stsp 	struct gotd_ref_updates		 ref_updates;
  93 13b2bc37 2022-10-23 stsp 	int				 nref_updates;
  94 9a8e357c 2023-01-28 op 	int				 nref_del;
  95 0ff2c315 2023-01-18 stsp 	int				 nref_new;
  96 1a52c9bf 2022-12-30 stsp } repo_write_client;
  97 13b2bc37 2022-10-23 stsp 
  98 13b2bc37 2022-10-23 stsp static volatile sig_atomic_t sigint_received;
  99 13b2bc37 2022-10-23 stsp static volatile sig_atomic_t sigterm_received;
 100 13b2bc37 2022-10-23 stsp 
 101 13b2bc37 2022-10-23 stsp static void
 102 13b2bc37 2022-10-23 stsp catch_sigint(int signo)
 103 13b2bc37 2022-10-23 stsp {
 104 13b2bc37 2022-10-23 stsp 	sigint_received = 1;
 105 13b2bc37 2022-10-23 stsp }
 106 13b2bc37 2022-10-23 stsp 
 107 13b2bc37 2022-10-23 stsp static void
 108 13b2bc37 2022-10-23 stsp catch_sigterm(int signo)
 109 13b2bc37 2022-10-23 stsp {
 110 13b2bc37 2022-10-23 stsp 	sigterm_received = 1;
 111 13b2bc37 2022-10-23 stsp }
 112 13b2bc37 2022-10-23 stsp 
 113 13b2bc37 2022-10-23 stsp static const struct got_error *
 114 13b2bc37 2022-10-23 stsp check_cancelled(void *arg)
 115 13b2bc37 2022-10-23 stsp {
 116 13b2bc37 2022-10-23 stsp 	if (sigint_received || sigterm_received)
 117 13b2bc37 2022-10-23 stsp 		return got_error(GOT_ERR_CANCELLED);
 118 13b2bc37 2022-10-23 stsp 
 119 13b2bc37 2022-10-23 stsp 	return NULL;
 120 13b2bc37 2022-10-23 stsp }
 121 13b2bc37 2022-10-23 stsp 
 122 13b2bc37 2022-10-23 stsp static const struct got_error *
 123 13b2bc37 2022-10-23 stsp send_peeled_tag_ref(struct got_reference *ref, struct got_object *obj,
 124 13b2bc37 2022-10-23 stsp     struct imsgbuf *ibuf)
 125 13b2bc37 2022-10-23 stsp {
 126 13b2bc37 2022-10-23 stsp 	const struct got_error *err = NULL;
 127 13b2bc37 2022-10-23 stsp 	struct got_tag_object *tag;
 128 13b2bc37 2022-10-23 stsp 	size_t namelen, len;
 129 13b2bc37 2022-10-23 stsp 	char *peeled_refname = NULL;
 130 13b2bc37 2022-10-23 stsp 	struct got_object_id *id;
 131 13b2bc37 2022-10-23 stsp 	struct ibuf *wbuf;
 132 13b2bc37 2022-10-23 stsp 
 133 13b2bc37 2022-10-23 stsp 	err = got_object_tag_open(&tag, repo_write.repo, obj);
 134 13b2bc37 2022-10-23 stsp 	if (err)
 135 13b2bc37 2022-10-23 stsp 		return err;
 136 13b2bc37 2022-10-23 stsp 
 137 13b2bc37 2022-10-23 stsp 	if (asprintf(&peeled_refname, "%s^{}", got_ref_get_name(ref)) == -1) {
 138 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("asprintf");
 139 13b2bc37 2022-10-23 stsp 		goto done;
 140 13b2bc37 2022-10-23 stsp 	}
 141 13b2bc37 2022-10-23 stsp 
 142 13b2bc37 2022-10-23 stsp 	id = got_object_tag_get_object_id(tag);
 143 13b2bc37 2022-10-23 stsp 	namelen = strlen(peeled_refname);
 144 13b2bc37 2022-10-23 stsp 
 145 13b2bc37 2022-10-23 stsp 	len = sizeof(struct gotd_imsg_ref) + namelen;
 146 13b2bc37 2022-10-23 stsp 	if (len > MAX_IMSGSIZE - IMSG_HEADER_SIZE) {
 147 13b2bc37 2022-10-23 stsp 		err = got_error(GOT_ERR_NO_SPACE);
 148 13b2bc37 2022-10-23 stsp 		goto done;
 149 13b2bc37 2022-10-23 stsp 	}
 150 13b2bc37 2022-10-23 stsp 
 151 13b2bc37 2022-10-23 stsp 	wbuf = imsg_create(ibuf, GOTD_IMSG_REF, PROC_REPO_WRITE,
 152 13b2bc37 2022-10-23 stsp 	    repo_write.pid, len);
 153 13b2bc37 2022-10-23 stsp 	if (wbuf == NULL) {
 154 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("imsg_create REF");
 155 13b2bc37 2022-10-23 stsp 		goto done;
 156 13b2bc37 2022-10-23 stsp 	}
 157 13b2bc37 2022-10-23 stsp 
 158 13b2bc37 2022-10-23 stsp 	/* Keep in sync with struct gotd_imsg_ref definition. */
 159 3093e2d7 2023-02-04 op 	if (imsg_add(wbuf, id->hash, SHA1_DIGEST_LENGTH) == -1) {
 160 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("imsg_add REF");
 161 13b2bc37 2022-10-23 stsp 		goto done;
 162 13b2bc37 2022-10-23 stsp 	}
 163 13b2bc37 2022-10-23 stsp 	if (imsg_add(wbuf, &namelen, sizeof(namelen)) == -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, peeled_refname, 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 
 172 13b2bc37 2022-10-23 stsp 	wbuf->fd = -1;
 173 13b2bc37 2022-10-23 stsp 	imsg_close(ibuf, wbuf);
 174 13b2bc37 2022-10-23 stsp done:
 175 13b2bc37 2022-10-23 stsp 	got_object_tag_close(tag);
 176 13b2bc37 2022-10-23 stsp 	return err;
 177 13b2bc37 2022-10-23 stsp }
 178 13b2bc37 2022-10-23 stsp 
 179 13b2bc37 2022-10-23 stsp static const struct got_error *
 180 13b2bc37 2022-10-23 stsp send_ref(struct got_reference *ref, struct imsgbuf *ibuf)
 181 13b2bc37 2022-10-23 stsp {
 182 13b2bc37 2022-10-23 stsp 	const struct got_error *err;
 183 13b2bc37 2022-10-23 stsp 	const char *refname = got_ref_get_name(ref);
 184 13b2bc37 2022-10-23 stsp 	size_t namelen;
 185 13b2bc37 2022-10-23 stsp 	struct got_object_id *id = NULL;
 186 13b2bc37 2022-10-23 stsp 	struct got_object *obj = NULL;
 187 13b2bc37 2022-10-23 stsp 	size_t len;
 188 13b2bc37 2022-10-23 stsp 	struct ibuf *wbuf;
 189 13b2bc37 2022-10-23 stsp 
 190 13b2bc37 2022-10-23 stsp 	namelen = strlen(refname);
 191 13b2bc37 2022-10-23 stsp 
 192 13b2bc37 2022-10-23 stsp 	len = sizeof(struct gotd_imsg_ref) + namelen;
 193 13b2bc37 2022-10-23 stsp 	if (len > MAX_IMSGSIZE - IMSG_HEADER_SIZE)
 194 13b2bc37 2022-10-23 stsp 		return got_error(GOT_ERR_NO_SPACE);
 195 13b2bc37 2022-10-23 stsp 
 196 13b2bc37 2022-10-23 stsp 	err = got_ref_resolve(&id, repo_write.repo, ref);
 197 13b2bc37 2022-10-23 stsp 	if (err)
 198 13b2bc37 2022-10-23 stsp 		return err;
 199 13b2bc37 2022-10-23 stsp 
 200 13b2bc37 2022-10-23 stsp 	wbuf = imsg_create(ibuf, GOTD_IMSG_REF, PROC_REPO_WRITE,
 201 13b2bc37 2022-10-23 stsp 	    repo_write.pid, len);
 202 13b2bc37 2022-10-23 stsp 	if (wbuf == NULL) {
 203 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("imsg_create REF");
 204 13b2bc37 2022-10-23 stsp 		goto done;
 205 13b2bc37 2022-10-23 stsp 	}
 206 13b2bc37 2022-10-23 stsp 
 207 13b2bc37 2022-10-23 stsp 	/* Keep in sync with struct gotd_imsg_ref definition. */
 208 3093e2d7 2023-02-04 op 	if (imsg_add(wbuf, id->hash, SHA1_DIGEST_LENGTH) == -1)
 209 13b2bc37 2022-10-23 stsp 		return got_error_from_errno("imsg_add REF");
 210 13b2bc37 2022-10-23 stsp 	if (imsg_add(wbuf, &namelen, sizeof(namelen)) == -1)
 211 13b2bc37 2022-10-23 stsp 		return got_error_from_errno("imsg_add REF");
 212 13b2bc37 2022-10-23 stsp 	if (imsg_add(wbuf, refname, namelen) == -1)
 213 13b2bc37 2022-10-23 stsp 		return got_error_from_errno("imsg_add REF");
 214 13b2bc37 2022-10-23 stsp 
 215 13b2bc37 2022-10-23 stsp 	wbuf->fd = -1;
 216 13b2bc37 2022-10-23 stsp 	imsg_close(ibuf, wbuf);
 217 13b2bc37 2022-10-23 stsp 
 218 13b2bc37 2022-10-23 stsp 	err = got_object_open(&obj, repo_write.repo, id);
 219 13b2bc37 2022-10-23 stsp 	if (err)
 220 13b2bc37 2022-10-23 stsp 		goto done;
 221 13b2bc37 2022-10-23 stsp 	if (obj->type == GOT_OBJ_TYPE_TAG)
 222 13b2bc37 2022-10-23 stsp 		err = send_peeled_tag_ref(ref, obj, ibuf);
 223 13b2bc37 2022-10-23 stsp done:
 224 13b2bc37 2022-10-23 stsp 	if (obj)
 225 13b2bc37 2022-10-23 stsp 		got_object_close(obj);
 226 13b2bc37 2022-10-23 stsp 	free(id);
 227 13b2bc37 2022-10-23 stsp 	return err;
 228 13b2bc37 2022-10-23 stsp }
 229 13b2bc37 2022-10-23 stsp 
 230 13b2bc37 2022-10-23 stsp static const struct got_error *
 231 1a52c9bf 2022-12-30 stsp list_refs(struct imsg *imsg)
 232 13b2bc37 2022-10-23 stsp {
 233 13b2bc37 2022-10-23 stsp 	const struct got_error *err;
 234 1a52c9bf 2022-12-30 stsp 	struct repo_write_client *client = &repo_write_client;
 235 13b2bc37 2022-10-23 stsp 	struct got_reflist_head refs;
 236 13b2bc37 2022-10-23 stsp 	struct got_reflist_entry *re;
 237 13b2bc37 2022-10-23 stsp 	struct gotd_imsg_list_refs_internal ireq;
 238 13b2bc37 2022-10-23 stsp 	size_t datalen;
 239 13b2bc37 2022-10-23 stsp 	struct gotd_imsg_reflist irefs;
 240 13b2bc37 2022-10-23 stsp 	struct imsgbuf ibuf;
 241 13b2bc37 2022-10-23 stsp 	int client_fd = imsg->fd;
 242 13b2bc37 2022-10-23 stsp 
 243 13b2bc37 2022-10-23 stsp 	TAILQ_INIT(&refs);
 244 13b2bc37 2022-10-23 stsp 
 245 13b2bc37 2022-10-23 stsp 	if (client_fd == -1)
 246 13b2bc37 2022-10-23 stsp 		return got_error(GOT_ERR_PRIVSEP_NO_FD);
 247 13b2bc37 2022-10-23 stsp 
 248 13b2bc37 2022-10-23 stsp 	datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
 249 13b2bc37 2022-10-23 stsp 	if (datalen != sizeof(ireq))
 250 13b2bc37 2022-10-23 stsp 		return got_error(GOT_ERR_PRIVSEP_LEN);
 251 13b2bc37 2022-10-23 stsp 	memcpy(&ireq, imsg->data, sizeof(ireq));
 252 13b2bc37 2022-10-23 stsp 
 253 1a52c9bf 2022-12-30 stsp 	if (ireq.client_id == 0)
 254 1a52c9bf 2022-12-30 stsp 		return got_error(GOT_ERR_CLIENT_ID);
 255 1a52c9bf 2022-12-30 stsp 	if (client->id != 0) {
 256 1a52c9bf 2022-12-30 stsp 		return got_error_msg(GOT_ERR_CLIENT_ID,
 257 1a52c9bf 2022-12-30 stsp 		    "duplicate list-refs request");
 258 1a52c9bf 2022-12-30 stsp 	}
 259 1a52c9bf 2022-12-30 stsp 	client->id = ireq.client_id;
 260 1a52c9bf 2022-12-30 stsp 	client->fd = client_fd;
 261 1a52c9bf 2022-12-30 stsp 	client->pack_pipe = -1;
 262 1a52c9bf 2022-12-30 stsp 	client->packidx_fd = -1;
 263 1a52c9bf 2022-12-30 stsp 	client->nref_updates = 0;
 264 9a8e357c 2023-01-28 op 	client->nref_del = 0;
 265 0ff2c315 2023-01-18 stsp 	client->nref_new = 0;
 266 13b2bc37 2022-10-23 stsp 
 267 13b2bc37 2022-10-23 stsp 	imsg_init(&ibuf, client_fd);
 268 13b2bc37 2022-10-23 stsp 
 269 13b2bc37 2022-10-23 stsp 	err = got_ref_list(&refs, repo_write.repo, "",
 270 13b2bc37 2022-10-23 stsp 	    got_ref_cmp_by_name, NULL);
 271 13b2bc37 2022-10-23 stsp 	if (err)
 272 13b2bc37 2022-10-23 stsp 		return err;
 273 13b2bc37 2022-10-23 stsp 
 274 13b2bc37 2022-10-23 stsp 	memset(&irefs, 0, sizeof(irefs));
 275 13b2bc37 2022-10-23 stsp 	TAILQ_FOREACH(re, &refs, entry) {
 276 13b2bc37 2022-10-23 stsp 		struct got_object_id *id;
 277 13b2bc37 2022-10-23 stsp 		int obj_type;
 278 13b2bc37 2022-10-23 stsp 
 279 13b2bc37 2022-10-23 stsp 		if (got_ref_is_symbolic(re->ref))
 280 13b2bc37 2022-10-23 stsp 			continue;
 281 13b2bc37 2022-10-23 stsp 
 282 13b2bc37 2022-10-23 stsp 		irefs.nrefs++;
 283 13b2bc37 2022-10-23 stsp 
 284 13b2bc37 2022-10-23 stsp 		/* Account for a peeled tag refs. */
 285 13b2bc37 2022-10-23 stsp 		err = got_ref_resolve(&id, repo_write.repo, re->ref);
 286 13b2bc37 2022-10-23 stsp 		if (err)
 287 13b2bc37 2022-10-23 stsp 			goto done;
 288 e26970cc 2023-01-10 op 		err = got_object_get_type(&obj_type, repo_write.repo, id);
 289 13b2bc37 2022-10-23 stsp 		free(id);
 290 13b2bc37 2022-10-23 stsp 		if (err)
 291 13b2bc37 2022-10-23 stsp 			goto done;
 292 13b2bc37 2022-10-23 stsp 		if (obj_type == GOT_OBJ_TYPE_TAG)
 293 13b2bc37 2022-10-23 stsp 			irefs.nrefs++;
 294 13b2bc37 2022-10-23 stsp 	}
 295 13b2bc37 2022-10-23 stsp 
 296 13b2bc37 2022-10-23 stsp 	if (imsg_compose(&ibuf, GOTD_IMSG_REFLIST, PROC_REPO_WRITE,
 297 13b2bc37 2022-10-23 stsp 	    repo_write.pid, -1, &irefs, sizeof(irefs)) == -1) {
 298 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("imsg_compose REFLIST");
 299 13b2bc37 2022-10-23 stsp 		goto done;
 300 13b2bc37 2022-10-23 stsp 	}
 301 13b2bc37 2022-10-23 stsp 
 302 13b2bc37 2022-10-23 stsp 	TAILQ_FOREACH(re, &refs, entry) {
 303 13b2bc37 2022-10-23 stsp 		if (got_ref_is_symbolic(re->ref))
 304 13b2bc37 2022-10-23 stsp 			continue;
 305 13b2bc37 2022-10-23 stsp 		err = send_ref(re->ref, &ibuf);
 306 13b2bc37 2022-10-23 stsp 		if (err)
 307 13b2bc37 2022-10-23 stsp 			goto done;
 308 13b2bc37 2022-10-23 stsp 	}
 309 13b2bc37 2022-10-23 stsp 
 310 13b2bc37 2022-10-23 stsp 	err = gotd_imsg_flush(&ibuf);
 311 13b2bc37 2022-10-23 stsp done:
 312 13b2bc37 2022-10-23 stsp 	got_ref_list_free(&refs);
 313 13b2bc37 2022-10-23 stsp 	imsg_clear(&ibuf);
 314 13b2bc37 2022-10-23 stsp 	return err;
 315 13b2bc37 2022-10-23 stsp }
 316 13b2bc37 2022-10-23 stsp 
 317 13b2bc37 2022-10-23 stsp static const struct got_error *
 318 13b2bc37 2022-10-23 stsp protect_ref_namespace(struct got_reference *ref, const char *namespace)
 319 13b2bc37 2022-10-23 stsp {
 320 13b2bc37 2022-10-23 stsp 	size_t len = strlen(namespace);
 321 13b2bc37 2022-10-23 stsp 
 322 13b2bc37 2022-10-23 stsp 	if (len < 5 || strncmp("refs/", namespace, 5) != 0 ||
 323 13b2bc37 2022-10-23 stsp 	    namespace[len -1] != '/') {
 324 13b2bc37 2022-10-23 stsp 		return got_error_fmt(GOT_ERR_BAD_REF_NAME,
 325 13b2bc37 2022-10-23 stsp 		    "reference namespace '%s'", namespace);
 326 13b2bc37 2022-10-23 stsp 	}
 327 13b2bc37 2022-10-23 stsp 
 328 13b2bc37 2022-10-23 stsp 	if (strncmp(namespace, got_ref_get_name(ref), len) == 0)
 329 13b2bc37 2022-10-23 stsp 		return got_error_fmt(GOT_ERR_REFS_PROTECTED, "%s", namespace);
 330 13b2bc37 2022-10-23 stsp 
 331 13b2bc37 2022-10-23 stsp 	return NULL;
 332 13b2bc37 2022-10-23 stsp }
 333 13b2bc37 2022-10-23 stsp 
 334 13b2bc37 2022-10-23 stsp static const struct got_error *
 335 1a52c9bf 2022-12-30 stsp recv_ref_update(struct imsg *imsg)
 336 13b2bc37 2022-10-23 stsp {
 337 9a8e357c 2023-01-28 op 	static const char zero_id[SHA1_DIGEST_LENGTH];
 338 13b2bc37 2022-10-23 stsp 	const struct got_error *err = NULL;
 339 1a52c9bf 2022-12-30 stsp 	struct repo_write_client *client = &repo_write_client;
 340 13b2bc37 2022-10-23 stsp 	struct gotd_imsg_ref_update iref;
 341 13b2bc37 2022-10-23 stsp 	size_t datalen;
 342 13b2bc37 2022-10-23 stsp 	char *refname = NULL;
 343 13b2bc37 2022-10-23 stsp 	struct got_reference *ref = NULL;
 344 13b2bc37 2022-10-23 stsp 	struct got_object_id *id = NULL;
 345 13b2bc37 2022-10-23 stsp 	struct imsgbuf ibuf;
 346 13b2bc37 2022-10-23 stsp 	struct gotd_ref_update *ref_update = NULL;
 347 13b2bc37 2022-10-23 stsp 
 348 13b2bc37 2022-10-23 stsp 	log_debug("ref-update received");
 349 13b2bc37 2022-10-23 stsp 
 350 13b2bc37 2022-10-23 stsp 	datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
 351 13b2bc37 2022-10-23 stsp 	if (datalen < sizeof(iref))
 352 13b2bc37 2022-10-23 stsp 		return got_error(GOT_ERR_PRIVSEP_LEN);
 353 13b2bc37 2022-10-23 stsp 	memcpy(&iref, imsg->data, sizeof(iref));
 354 13b2bc37 2022-10-23 stsp 	if (datalen != sizeof(iref) + iref.name_len)
 355 13b2bc37 2022-10-23 stsp 		return got_error(GOT_ERR_PRIVSEP_LEN);
 356 13b2bc37 2022-10-23 stsp 
 357 1a52c9bf 2022-12-30 stsp 	imsg_init(&ibuf, client->fd);
 358 13b2bc37 2022-10-23 stsp 
 359 00b3e9ae 2023-01-11 op 	refname = strndup(imsg->data + sizeof(iref), iref.name_len);
 360 13b2bc37 2022-10-23 stsp 	if (refname == NULL)
 361 00b3e9ae 2023-01-11 op 		return got_error_from_errno("strndup");
 362 13b2bc37 2022-10-23 stsp 
 363 13b2bc37 2022-10-23 stsp 	ref_update = calloc(1, sizeof(*ref_update));
 364 13b2bc37 2022-10-23 stsp 	if (ref_update == NULL) {
 365 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("malloc");
 366 13b2bc37 2022-10-23 stsp 		goto done;
 367 13b2bc37 2022-10-23 stsp 	}
 368 13b2bc37 2022-10-23 stsp 
 369 3093e2d7 2023-02-04 op 	memcpy(ref_update->old_id.hash, iref.old_id, SHA1_DIGEST_LENGTH);
 370 3093e2d7 2023-02-04 op 	memcpy(ref_update->new_id.hash, iref.new_id, SHA1_DIGEST_LENGTH);
 371 13b2bc37 2022-10-23 stsp 
 372 13b2bc37 2022-10-23 stsp 	err = got_ref_open(&ref, repo_write.repo, refname, 0);
 373 13b2bc37 2022-10-23 stsp 	if (err) {
 374 13b2bc37 2022-10-23 stsp 		if (err->code != GOT_ERR_NOT_REF)
 375 13b2bc37 2022-10-23 stsp 			goto done;
 376 13b2bc37 2022-10-23 stsp 		err = got_ref_alloc(&ref, refname, &ref_update->new_id);
 377 13b2bc37 2022-10-23 stsp 		if (err)
 378 13b2bc37 2022-10-23 stsp 			goto done;
 379 13b2bc37 2022-10-23 stsp 		ref_update->ref_is_new = 1;
 380 0ff2c315 2023-01-18 stsp 		client->nref_new++;
 381 13b2bc37 2022-10-23 stsp 	}
 382 13b2bc37 2022-10-23 stsp 	if (got_ref_is_symbolic(ref)) {
 383 13b2bc37 2022-10-23 stsp 		err = got_error_fmt(GOT_ERR_BAD_REF_TYPE,
 384 13b2bc37 2022-10-23 stsp 		    "'%s' is a symbolic reference and cannot "
 385 13b2bc37 2022-10-23 stsp 		    "be updated", got_ref_get_name(ref));
 386 13b2bc37 2022-10-23 stsp 		goto done;
 387 13b2bc37 2022-10-23 stsp 	}
 388 13b2bc37 2022-10-23 stsp 	if (strncmp("refs/", got_ref_get_name(ref), 5) != 0) {
 389 13b2bc37 2022-10-23 stsp 		err = got_error_fmt(GOT_ERR_BAD_REF_NAME,
 390 13b2bc37 2022-10-23 stsp 		    "%s: does not begin with 'refs/'",
 391 13b2bc37 2022-10-23 stsp 		    got_ref_get_name(ref));
 392 13b2bc37 2022-10-23 stsp 		goto done;
 393 13b2bc37 2022-10-23 stsp 	}
 394 13b2bc37 2022-10-23 stsp 
 395 13b2bc37 2022-10-23 stsp 	err = protect_ref_namespace(ref, "refs/got/");
 396 13b2bc37 2022-10-23 stsp 	if (err)
 397 13b2bc37 2022-10-23 stsp 		goto done;
 398 13b2bc37 2022-10-23 stsp 	err = protect_ref_namespace(ref, "refs/remotes/");
 399 13b2bc37 2022-10-23 stsp 	if (err)
 400 13b2bc37 2022-10-23 stsp 		goto done;
 401 13b2bc37 2022-10-23 stsp 
 402 13b2bc37 2022-10-23 stsp 	if (!ref_update->ref_is_new) {
 403 13b2bc37 2022-10-23 stsp 		/*
 404 13b2bc37 2022-10-23 stsp 		 * Ensure the client's idea of this update is still valid.
 405 13b2bc37 2022-10-23 stsp 		 * At this point we can only return an error, to prevent
 406 13b2bc37 2022-10-23 stsp 		 * the client from uploading a pack file which will likely
 407 13b2bc37 2022-10-23 stsp 		 * have to be discarded.
 408 13b2bc37 2022-10-23 stsp 		 */
 409 13b2bc37 2022-10-23 stsp 		err = got_ref_resolve(&id, repo_write.repo, ref);
 410 13b2bc37 2022-10-23 stsp 		if (err)
 411 13b2bc37 2022-10-23 stsp 			goto done;
 412 13b2bc37 2022-10-23 stsp 
 413 13b2bc37 2022-10-23 stsp 		if (got_object_id_cmp(id, &ref_update->old_id) != 0) {
 414 13b2bc37 2022-10-23 stsp 			err = got_error_fmt(GOT_ERR_REF_BUSY,
 415 13b2bc37 2022-10-23 stsp 			    "%s has been modified by someone else "
 416 13b2bc37 2022-10-23 stsp 			    "while transaction was in progress",
 417 13b2bc37 2022-10-23 stsp 			    got_ref_get_name(ref));
 418 13b2bc37 2022-10-23 stsp 			goto done;
 419 13b2bc37 2022-10-23 stsp 		}
 420 13b2bc37 2022-10-23 stsp 	}
 421 13b2bc37 2022-10-23 stsp 
 422 13b2bc37 2022-10-23 stsp 	gotd_imsg_send_ack(&ref_update->new_id, &ibuf, PROC_REPO_WRITE,
 423 13b2bc37 2022-10-23 stsp 	    repo_write.pid);
 424 13b2bc37 2022-10-23 stsp 
 425 13b2bc37 2022-10-23 stsp 	ref_update->ref = ref;
 426 3093e2d7 2023-02-04 op 	if (memcmp(ref_update->new_id.hash, zero_id, sizeof(zero_id)) == 0) {
 427 9a8e357c 2023-01-28 op 		ref_update->delete_ref = 1;
 428 9a8e357c 2023-01-28 op 		client->nref_del++;
 429 9a8e357c 2023-01-28 op 	}
 430 1a52c9bf 2022-12-30 stsp 	STAILQ_INSERT_HEAD(&client->ref_updates, ref_update, entry);
 431 1a52c9bf 2022-12-30 stsp 	client->nref_updates++;
 432 13b2bc37 2022-10-23 stsp 	ref = NULL;
 433 13b2bc37 2022-10-23 stsp 	ref_update = NULL;
 434 13b2bc37 2022-10-23 stsp done:
 435 13b2bc37 2022-10-23 stsp 	if (ref)
 436 13b2bc37 2022-10-23 stsp 		got_ref_close(ref);
 437 13b2bc37 2022-10-23 stsp 	free(ref_update);
 438 13b2bc37 2022-10-23 stsp 	free(refname);
 439 13b2bc37 2022-10-23 stsp 	free(id);
 440 13b2bc37 2022-10-23 stsp 	return err;
 441 13b2bc37 2022-10-23 stsp }
 442 13b2bc37 2022-10-23 stsp 
 443 13b2bc37 2022-10-23 stsp static const struct got_error *
 444 13b2bc37 2022-10-23 stsp pack_index_progress(void *arg, uint32_t nobj_total, uint32_t nobj_indexed,
 445 13b2bc37 2022-10-23 stsp     uint32_t nobj_loose, uint32_t nobj_resolved)
 446 13b2bc37 2022-10-23 stsp {
 447 13b2bc37 2022-10-23 stsp 	int p_indexed = 0, p_resolved = 0;
 448 13b2bc37 2022-10-23 stsp 	int nobj_delta = nobj_total - nobj_loose;
 449 13b2bc37 2022-10-23 stsp 
 450 13b2bc37 2022-10-23 stsp 	if (nobj_total > 0)
 451 13b2bc37 2022-10-23 stsp 		p_indexed = (nobj_indexed * 100) / nobj_total;
 452 13b2bc37 2022-10-23 stsp 
 453 13b2bc37 2022-10-23 stsp 	if (nobj_delta > 0)
 454 13b2bc37 2022-10-23 stsp 		p_resolved = (nobj_resolved * 100) / nobj_delta;
 455 13b2bc37 2022-10-23 stsp 
 456 13b2bc37 2022-10-23 stsp 	if (p_resolved > 0) {
 457 13b2bc37 2022-10-23 stsp 		log_debug("indexing %d objects %d%%; resolving %d deltas %d%%",
 458 13b2bc37 2022-10-23 stsp 		    nobj_total, p_indexed, nobj_delta, p_resolved);
 459 13b2bc37 2022-10-23 stsp 	} else
 460 13b2bc37 2022-10-23 stsp 		log_debug("indexing %d objects %d%%", nobj_total, p_indexed);
 461 13b2bc37 2022-10-23 stsp 
 462 13b2bc37 2022-10-23 stsp 	return NULL;
 463 13b2bc37 2022-10-23 stsp }
 464 13b2bc37 2022-10-23 stsp 
 465 13b2bc37 2022-10-23 stsp static const struct got_error *
 466 13b2bc37 2022-10-23 stsp read_more_pack_stream(int infd, BUF *buf, size_t minsize)
 467 13b2bc37 2022-10-23 stsp {
 468 13b2bc37 2022-10-23 stsp 	const struct got_error *err = NULL;
 469 13b2bc37 2022-10-23 stsp 	uint8_t readahead[65536];
 470 13b2bc37 2022-10-23 stsp 	size_t have, newlen;
 471 13b2bc37 2022-10-23 stsp 
 472 13b2bc37 2022-10-23 stsp 	err = got_poll_read_full(infd, &have,
 473 13b2bc37 2022-10-23 stsp 	    readahead, sizeof(readahead), minsize);
 474 13b2bc37 2022-10-23 stsp 	if (err)
 475 13b2bc37 2022-10-23 stsp 		return err;
 476 13b2bc37 2022-10-23 stsp 
 477 13b2bc37 2022-10-23 stsp 	err = buf_append(&newlen, buf, readahead, have);
 478 13b2bc37 2022-10-23 stsp 	if (err)
 479 13b2bc37 2022-10-23 stsp 		return err;
 480 e26970cc 2023-01-10 op 	return NULL;
 481 13b2bc37 2022-10-23 stsp }
 482 13b2bc37 2022-10-23 stsp 
 483 13b2bc37 2022-10-23 stsp static const struct got_error *
 484 13b2bc37 2022-10-23 stsp copy_object_type_and_size(uint8_t *type, uint64_t *size, int infd, int outfd,
 485 13b2bc37 2022-10-23 stsp     off_t *outsize, BUF *buf, size_t *buf_pos, SHA1_CTX *ctx)
 486 13b2bc37 2022-10-23 stsp {
 487 13b2bc37 2022-10-23 stsp 	const struct got_error *err = NULL;
 488 13b2bc37 2022-10-23 stsp 	uint8_t t = 0;
 489 13b2bc37 2022-10-23 stsp 	uint64_t s = 0;
 490 13b2bc37 2022-10-23 stsp 	uint8_t sizebuf[8];
 491 13b2bc37 2022-10-23 stsp 	size_t i = 0;
 492 13b2bc37 2022-10-23 stsp 	off_t obj_offset = *outsize;
 493 13b2bc37 2022-10-23 stsp 
 494 13b2bc37 2022-10-23 stsp 	do {
 495 13b2bc37 2022-10-23 stsp 		/* We do not support size values which don't fit in 64 bit. */
 496 13b2bc37 2022-10-23 stsp 		if (i > 9)
 497 13b2bc37 2022-10-23 stsp 			return got_error_fmt(GOT_ERR_OBJ_TOO_LARGE,
 498 22ec3416 2022-10-25 op 			    "packfile offset %lld", (long long)obj_offset);
 499 13b2bc37 2022-10-23 stsp 
 500 13b2bc37 2022-10-23 stsp 		if (buf_len(buf) - *buf_pos < sizeof(sizebuf[0])) {
 501 13b2bc37 2022-10-23 stsp 			err = read_more_pack_stream(infd, buf,
 502 13b2bc37 2022-10-23 stsp 			    sizeof(sizebuf[0]));
 503 13b2bc37 2022-10-23 stsp 			if (err)
 504 13b2bc37 2022-10-23 stsp 				return err;
 505 13b2bc37 2022-10-23 stsp 		}
 506 13b2bc37 2022-10-23 stsp 
 507 13b2bc37 2022-10-23 stsp 		sizebuf[i] = buf_getc(buf, *buf_pos);
 508 13b2bc37 2022-10-23 stsp 		*buf_pos += sizeof(sizebuf[i]);
 509 13b2bc37 2022-10-23 stsp 
 510 13b2bc37 2022-10-23 stsp 		if (i == 0) {
 511 13b2bc37 2022-10-23 stsp 			t = (sizebuf[i] & GOT_PACK_OBJ_SIZE0_TYPE_MASK) >>
 512 13b2bc37 2022-10-23 stsp 			    GOT_PACK_OBJ_SIZE0_TYPE_MASK_SHIFT;
 513 13b2bc37 2022-10-23 stsp 			s = (sizebuf[i] & GOT_PACK_OBJ_SIZE0_VAL_MASK);
 514 13b2bc37 2022-10-23 stsp 		} else {
 515 13b2bc37 2022-10-23 stsp 			size_t shift = 4 + 7 * (i - 1);
 516 13b2bc37 2022-10-23 stsp 			s |= ((sizebuf[i] & GOT_PACK_OBJ_SIZE_VAL_MASK) <<
 517 13b2bc37 2022-10-23 stsp 			    shift);
 518 13b2bc37 2022-10-23 stsp 		}
 519 13b2bc37 2022-10-23 stsp 		i++;
 520 13b2bc37 2022-10-23 stsp 	} while (sizebuf[i - 1] & GOT_PACK_OBJ_SIZE_MORE);
 521 13b2bc37 2022-10-23 stsp 
 522 13b2bc37 2022-10-23 stsp 	err = got_pack_hwrite(outfd, sizebuf, i, ctx);
 523 13b2bc37 2022-10-23 stsp 	if (err)
 524 13b2bc37 2022-10-23 stsp 		return err;
 525 13b2bc37 2022-10-23 stsp 	*outsize += i;
 526 13b2bc37 2022-10-23 stsp 
 527 13b2bc37 2022-10-23 stsp 	*type = t;
 528 13b2bc37 2022-10-23 stsp 	*size = s;
 529 13b2bc37 2022-10-23 stsp 	return NULL;
 530 13b2bc37 2022-10-23 stsp }
 531 13b2bc37 2022-10-23 stsp 
 532 13b2bc37 2022-10-23 stsp static const struct got_error *
 533 13b2bc37 2022-10-23 stsp copy_ref_delta(int infd, int outfd, off_t *outsize, BUF *buf, size_t *buf_pos,
 534 13b2bc37 2022-10-23 stsp     SHA1_CTX *ctx)
 535 13b2bc37 2022-10-23 stsp {
 536 13b2bc37 2022-10-23 stsp 	const struct got_error *err = NULL;
 537 13b2bc37 2022-10-23 stsp 	size_t remain = buf_len(buf) - *buf_pos;
 538 13b2bc37 2022-10-23 stsp 
 539 13b2bc37 2022-10-23 stsp 	if (remain < SHA1_DIGEST_LENGTH) {
 540 13b2bc37 2022-10-23 stsp 		err = read_more_pack_stream(infd, buf,
 541 13b2bc37 2022-10-23 stsp 		    SHA1_DIGEST_LENGTH - remain);
 542 13b2bc37 2022-10-23 stsp 		if (err)
 543 13b2bc37 2022-10-23 stsp 			return err;
 544 13b2bc37 2022-10-23 stsp 	}
 545 13b2bc37 2022-10-23 stsp 
 546 13b2bc37 2022-10-23 stsp 	err = got_pack_hwrite(outfd, buf_get(buf) + *buf_pos,
 547 13b2bc37 2022-10-23 stsp 	    SHA1_DIGEST_LENGTH, ctx);
 548 13b2bc37 2022-10-23 stsp 	if (err)
 549 13b2bc37 2022-10-23 stsp 		return err;
 550 13b2bc37 2022-10-23 stsp 
 551 13b2bc37 2022-10-23 stsp 	*buf_pos += SHA1_DIGEST_LENGTH;
 552 13b2bc37 2022-10-23 stsp 	return NULL;
 553 13b2bc37 2022-10-23 stsp }
 554 13b2bc37 2022-10-23 stsp 
 555 13b2bc37 2022-10-23 stsp static const struct got_error *
 556 13b2bc37 2022-10-23 stsp copy_offset_delta(int infd, int outfd, off_t *outsize, BUF *buf, size_t *buf_pos,
 557 13b2bc37 2022-10-23 stsp     SHA1_CTX *ctx)
 558 13b2bc37 2022-10-23 stsp {
 559 13b2bc37 2022-10-23 stsp 	const struct got_error *err = NULL;
 560 13b2bc37 2022-10-23 stsp 	uint64_t o = 0;
 561 13b2bc37 2022-10-23 stsp 	uint8_t offbuf[8];
 562 13b2bc37 2022-10-23 stsp 	size_t i = 0;
 563 13b2bc37 2022-10-23 stsp 	off_t obj_offset = *outsize;
 564 13b2bc37 2022-10-23 stsp 
 565 13b2bc37 2022-10-23 stsp 	do {
 566 13b2bc37 2022-10-23 stsp 		/* We do not support offset values which don't fit in 64 bit. */
 567 13b2bc37 2022-10-23 stsp 		if (i > 8)
 568 13b2bc37 2022-10-23 stsp 			return got_error_fmt(GOT_ERR_OBJ_TOO_LARGE,
 569 22ec3416 2022-10-25 op 			    "packfile offset %lld", (long long)obj_offset);
 570 13b2bc37 2022-10-23 stsp 
 571 13b2bc37 2022-10-23 stsp 		if (buf_len(buf) - *buf_pos < sizeof(offbuf[0])) {
 572 13b2bc37 2022-10-23 stsp 			err = read_more_pack_stream(infd, buf,
 573 13b2bc37 2022-10-23 stsp 			    sizeof(offbuf[0]));
 574 13b2bc37 2022-10-23 stsp 			if (err)
 575 13b2bc37 2022-10-23 stsp 				return err;
 576 13b2bc37 2022-10-23 stsp 		}
 577 13b2bc37 2022-10-23 stsp 
 578 13b2bc37 2022-10-23 stsp 		offbuf[i] = buf_getc(buf, *buf_pos);
 579 13b2bc37 2022-10-23 stsp 		*buf_pos += sizeof(offbuf[i]);
 580 13b2bc37 2022-10-23 stsp 
 581 13b2bc37 2022-10-23 stsp 		if (i == 0)
 582 13b2bc37 2022-10-23 stsp 			o = (offbuf[i] & GOT_PACK_OBJ_DELTA_OFF_VAL_MASK);
 583 13b2bc37 2022-10-23 stsp 		else {
 584 13b2bc37 2022-10-23 stsp 			o++;
 585 13b2bc37 2022-10-23 stsp 			o <<= 7;
 586 13b2bc37 2022-10-23 stsp 			o += (offbuf[i] & GOT_PACK_OBJ_DELTA_OFF_VAL_MASK);
 587 13b2bc37 2022-10-23 stsp 		}
 588 13b2bc37 2022-10-23 stsp 		i++;
 589 13b2bc37 2022-10-23 stsp 	} while (offbuf[i - 1] & GOT_PACK_OBJ_DELTA_OFF_MORE);
 590 13b2bc37 2022-10-23 stsp 
 591 13b2bc37 2022-10-23 stsp 	if (o < sizeof(struct got_packfile_hdr) || o > *outsize)
 592 13b2bc37 2022-10-23 stsp 		return got_error(GOT_ERR_PACK_OFFSET);
 593 13b2bc37 2022-10-23 stsp 
 594 13b2bc37 2022-10-23 stsp 	err = got_pack_hwrite(outfd, offbuf, i, ctx);
 595 13b2bc37 2022-10-23 stsp 	if (err)
 596 13b2bc37 2022-10-23 stsp 		return err;
 597 13b2bc37 2022-10-23 stsp 
 598 13b2bc37 2022-10-23 stsp 	*outsize += i;
 599 13b2bc37 2022-10-23 stsp 	return NULL;
 600 13b2bc37 2022-10-23 stsp }
 601 13b2bc37 2022-10-23 stsp 
 602 13b2bc37 2022-10-23 stsp static const struct got_error *
 603 13b2bc37 2022-10-23 stsp copy_zstream(int infd, int outfd, off_t *outsize, BUF *buf, size_t *buf_pos,
 604 13b2bc37 2022-10-23 stsp     SHA1_CTX *ctx)
 605 13b2bc37 2022-10-23 stsp {
 606 13b2bc37 2022-10-23 stsp 	const struct got_error *err = NULL;
 607 13b2bc37 2022-10-23 stsp 	z_stream z;
 608 13b2bc37 2022-10-23 stsp 	int zret;
 609 13b2bc37 2022-10-23 stsp 	char voidbuf[1024];
 610 13b2bc37 2022-10-23 stsp 	size_t consumed_total = 0;
 611 13b2bc37 2022-10-23 stsp 	off_t zstream_offset = *outsize;
 612 13b2bc37 2022-10-23 stsp 
 613 13b2bc37 2022-10-23 stsp 	memset(&z, 0, sizeof(z));
 614 13b2bc37 2022-10-23 stsp 
 615 13b2bc37 2022-10-23 stsp 	z.zalloc = Z_NULL;
 616 13b2bc37 2022-10-23 stsp 	z.zfree = Z_NULL;
 617 13b2bc37 2022-10-23 stsp 	zret = inflateInit(&z);
 618 13b2bc37 2022-10-23 stsp 	if (zret != Z_OK) {
 619 13b2bc37 2022-10-23 stsp 		if  (zret == Z_ERRNO)
 620 13b2bc37 2022-10-23 stsp 			return got_error_from_errno("inflateInit");
 621 13b2bc37 2022-10-23 stsp 		if  (zret == Z_MEM_ERROR) {
 622 13b2bc37 2022-10-23 stsp 			errno = ENOMEM;
 623 13b2bc37 2022-10-23 stsp 			return got_error_from_errno("inflateInit");
 624 13b2bc37 2022-10-23 stsp 		}
 625 13b2bc37 2022-10-23 stsp 		return got_error_msg(GOT_ERR_DECOMPRESSION,
 626 13b2bc37 2022-10-23 stsp 		    "inflateInit failed");
 627 13b2bc37 2022-10-23 stsp 	}
 628 13b2bc37 2022-10-23 stsp 
 629 13b2bc37 2022-10-23 stsp 	while (zret != Z_STREAM_END) {
 630 13b2bc37 2022-10-23 stsp 		size_t last_total_in, consumed;
 631 13b2bc37 2022-10-23 stsp 
 632 13b2bc37 2022-10-23 stsp 		/*
 633 13b2bc37 2022-10-23 stsp 		 * Decompress into the void. Object data will be parsed
 634 13b2bc37 2022-10-23 stsp 		 * later, when the pack file is indexed. For now, we just
 635 13b2bc37 2022-10-23 stsp 		 * want to locate the end of the compressed stream.
 636 13b2bc37 2022-10-23 stsp 		 */
 637 13b2bc37 2022-10-23 stsp 		while (zret != Z_STREAM_END && buf_len(buf) - *buf_pos > 0) {
 638 13b2bc37 2022-10-23 stsp 			last_total_in = z.total_in;
 639 13b2bc37 2022-10-23 stsp 			z.next_in = buf_get(buf) + *buf_pos;
 640 13b2bc37 2022-10-23 stsp 			z.avail_in = buf_len(buf) - *buf_pos;
 641 13b2bc37 2022-10-23 stsp 			z.next_out = voidbuf;
 642 13b2bc37 2022-10-23 stsp 			z.avail_out = sizeof(voidbuf);
 643 13b2bc37 2022-10-23 stsp 
 644 13b2bc37 2022-10-23 stsp 			zret = inflate(&z, Z_SYNC_FLUSH);
 645 13b2bc37 2022-10-23 stsp 			if (zret != Z_OK && zret != Z_BUF_ERROR &&
 646 13b2bc37 2022-10-23 stsp 			    zret != Z_STREAM_END) {
 647 13b2bc37 2022-10-23 stsp 				err = got_error_fmt(GOT_ERR_DECOMPRESSION,
 648 22ec3416 2022-10-25 op 				    "packfile offset %lld",
 649 22ec3416 2022-10-25 op 				    (long long)zstream_offset);
 650 13b2bc37 2022-10-23 stsp 				goto done;
 651 13b2bc37 2022-10-23 stsp 			}
 652 13b2bc37 2022-10-23 stsp 			consumed = z.total_in - last_total_in;
 653 13b2bc37 2022-10-23 stsp 
 654 13b2bc37 2022-10-23 stsp 			err = got_pack_hwrite(outfd, buf_get(buf) + *buf_pos,
 655 13b2bc37 2022-10-23 stsp 			    consumed, ctx);
 656 13b2bc37 2022-10-23 stsp 			if (err)
 657 13b2bc37 2022-10-23 stsp 				goto done;
 658 13b2bc37 2022-10-23 stsp 
 659 13b2bc37 2022-10-23 stsp 			err = buf_discard(buf, *buf_pos + consumed);
 660 13b2bc37 2022-10-23 stsp 			if (err)
 661 13b2bc37 2022-10-23 stsp 				goto done;
 662 13b2bc37 2022-10-23 stsp 			*buf_pos = 0;
 663 13b2bc37 2022-10-23 stsp 
 664 13b2bc37 2022-10-23 stsp 			consumed_total += consumed;
 665 13b2bc37 2022-10-23 stsp 		}
 666 13b2bc37 2022-10-23 stsp 
 667 13b2bc37 2022-10-23 stsp 		if (zret != Z_STREAM_END) {
 668 13b2bc37 2022-10-23 stsp 			err = read_more_pack_stream(infd, buf, 1);
 669 13b2bc37 2022-10-23 stsp 			if (err)
 670 13b2bc37 2022-10-23 stsp 				goto done;
 671 13b2bc37 2022-10-23 stsp 		}
 672 13b2bc37 2022-10-23 stsp 	}
 673 13b2bc37 2022-10-23 stsp 
 674 13b2bc37 2022-10-23 stsp 	if (err == NULL)
 675 13b2bc37 2022-10-23 stsp 		*outsize += consumed_total;
 676 13b2bc37 2022-10-23 stsp done:
 677 13b2bc37 2022-10-23 stsp 	inflateEnd(&z);
 678 13b2bc37 2022-10-23 stsp 	return err;
 679 13b2bc37 2022-10-23 stsp }
 680 13b2bc37 2022-10-23 stsp 
 681 13b2bc37 2022-10-23 stsp static const struct got_error *
 682 13b2bc37 2022-10-23 stsp validate_object_type(int obj_type)
 683 13b2bc37 2022-10-23 stsp {
 684 13b2bc37 2022-10-23 stsp 	switch (obj_type) {
 685 13b2bc37 2022-10-23 stsp 	case GOT_OBJ_TYPE_BLOB:
 686 13b2bc37 2022-10-23 stsp 	case GOT_OBJ_TYPE_COMMIT:
 687 13b2bc37 2022-10-23 stsp 	case GOT_OBJ_TYPE_TREE:
 688 13b2bc37 2022-10-23 stsp 	case GOT_OBJ_TYPE_TAG:
 689 13b2bc37 2022-10-23 stsp 	case GOT_OBJ_TYPE_REF_DELTA:
 690 13b2bc37 2022-10-23 stsp 	case GOT_OBJ_TYPE_OFFSET_DELTA:
 691 13b2bc37 2022-10-23 stsp 		return NULL;
 692 13b2bc37 2022-10-23 stsp 	default:
 693 13b2bc37 2022-10-23 stsp 		break;
 694 13b2bc37 2022-10-23 stsp 	}
 695 13b2bc37 2022-10-23 stsp 
 696 13b2bc37 2022-10-23 stsp 	return got_error(GOT_ERR_OBJ_TYPE);
 697 13b2bc37 2022-10-23 stsp }
 698 13b2bc37 2022-10-23 stsp 
 699 13b2bc37 2022-10-23 stsp static const struct got_error *
 700 3093e2d7 2023-02-04 op recv_packdata(off_t *outsize, uint32_t *nobj, uint8_t *hash,
 701 0ff2c315 2023-01-18 stsp     int infd, int outfd)
 702 13b2bc37 2022-10-23 stsp {
 703 13b2bc37 2022-10-23 stsp 	const struct got_error *err;
 704 0ff2c315 2023-01-18 stsp 	struct repo_write_client *client = &repo_write_client;
 705 13b2bc37 2022-10-23 stsp 	struct got_packfile_hdr hdr;
 706 13b2bc37 2022-10-23 stsp 	size_t have;
 707 0ff2c315 2023-01-18 stsp 	uint32_t nhave = 0;
 708 13b2bc37 2022-10-23 stsp 	SHA1_CTX ctx;
 709 3093e2d7 2023-02-04 op 	uint8_t expected_hash[SHA1_DIGEST_LENGTH];
 710 13b2bc37 2022-10-23 stsp 	char hex[SHA1_DIGEST_STRING_LENGTH];
 711 13b2bc37 2022-10-23 stsp 	BUF *buf = NULL;
 712 13b2bc37 2022-10-23 stsp 	size_t buf_pos = 0, remain;
 713 13b2bc37 2022-10-23 stsp 	ssize_t w;
 714 13b2bc37 2022-10-23 stsp 
 715 13b2bc37 2022-10-23 stsp 	*outsize = 0;
 716 0ff2c315 2023-01-18 stsp 	*nobj = 0;
 717 9a8e357c 2023-01-28 op 
 718 9a8e357c 2023-01-28 op 	/* if only deleting references there's nothing to read */
 719 9a8e357c 2023-01-28 op 	if (client->nref_updates == client->nref_del)
 720 9a8e357c 2023-01-28 op 		return NULL;
 721 9a8e357c 2023-01-28 op 
 722 13b2bc37 2022-10-23 stsp 	SHA1Init(&ctx);
 723 13b2bc37 2022-10-23 stsp 
 724 13b2bc37 2022-10-23 stsp 	err = got_poll_read_full(infd, &have, &hdr, sizeof(hdr), sizeof(hdr));
 725 13b2bc37 2022-10-23 stsp 	if (err)
 726 13b2bc37 2022-10-23 stsp 		return err;
 727 13b2bc37 2022-10-23 stsp 	if (have != sizeof(hdr))
 728 13b2bc37 2022-10-23 stsp 		return got_error_msg(GOT_ERR_BAD_PACKFILE, "short pack file");
 729 13b2bc37 2022-10-23 stsp 	*outsize += have;
 730 13b2bc37 2022-10-23 stsp 
 731 13b2bc37 2022-10-23 stsp 	if (hdr.signature != htobe32(GOT_PACKFILE_SIGNATURE))
 732 13b2bc37 2022-10-23 stsp 		return got_error_msg(GOT_ERR_BAD_PACKFILE,
 733 13b2bc37 2022-10-23 stsp 		    "bad packfile signature");
 734 13b2bc37 2022-10-23 stsp 	if (hdr.version != htobe32(GOT_PACKFILE_VERSION))
 735 13b2bc37 2022-10-23 stsp 		return got_error_msg(GOT_ERR_BAD_PACKFILE,
 736 13b2bc37 2022-10-23 stsp 		    "bad packfile version");
 737 13b2bc37 2022-10-23 stsp 
 738 0ff2c315 2023-01-18 stsp 	*nobj = be32toh(hdr.nobjects);
 739 0ff2c315 2023-01-18 stsp 	if (*nobj == 0) {
 740 0ff2c315 2023-01-18 stsp 		/*
 741 0ff2c315 2023-01-18 stsp 		 * Clients which are creating new references only
 742 0ff2c315 2023-01-18 stsp 		 * will send us an empty pack file.
 743 0ff2c315 2023-01-18 stsp 		 */
 744 0ff2c315 2023-01-18 stsp 		if (client->nref_updates > 0 &&
 745 0ff2c315 2023-01-18 stsp 		    client->nref_updates == client->nref_new)
 746 0ff2c315 2023-01-18 stsp 			return NULL;
 747 0ff2c315 2023-01-18 stsp 
 748 13b2bc37 2022-10-23 stsp 		return got_error_msg(GOT_ERR_BAD_PACKFILE,
 749 13b2bc37 2022-10-23 stsp 		    "bad packfile with zero objects");
 750 0ff2c315 2023-01-18 stsp 	}
 751 13b2bc37 2022-10-23 stsp 
 752 0ff2c315 2023-01-18 stsp 	log_debug("expecting %d objects", *nobj);
 753 13b2bc37 2022-10-23 stsp 
 754 13b2bc37 2022-10-23 stsp 	err = got_pack_hwrite(outfd, &hdr, sizeof(hdr), &ctx);
 755 13b2bc37 2022-10-23 stsp 	if (err)
 756 13b2bc37 2022-10-23 stsp 		return err;
 757 13b2bc37 2022-10-23 stsp 
 758 13b2bc37 2022-10-23 stsp 	err = buf_alloc(&buf, 65536);
 759 13b2bc37 2022-10-23 stsp 	if (err)
 760 13b2bc37 2022-10-23 stsp 		return err;
 761 13b2bc37 2022-10-23 stsp 
 762 0ff2c315 2023-01-18 stsp 	while (nhave != *nobj) {
 763 13b2bc37 2022-10-23 stsp 		uint8_t obj_type;
 764 13b2bc37 2022-10-23 stsp 		uint64_t obj_size;
 765 13b2bc37 2022-10-23 stsp 
 766 13b2bc37 2022-10-23 stsp 		err = copy_object_type_and_size(&obj_type, &obj_size,
 767 13b2bc37 2022-10-23 stsp 		    infd, outfd, outsize, buf, &buf_pos, &ctx);
 768 13b2bc37 2022-10-23 stsp 		if (err)
 769 13b2bc37 2022-10-23 stsp 			goto done;
 770 13b2bc37 2022-10-23 stsp 
 771 13b2bc37 2022-10-23 stsp 		err = validate_object_type(obj_type);
 772 13b2bc37 2022-10-23 stsp 		if (err)
 773 13b2bc37 2022-10-23 stsp 			goto done;
 774 13b2bc37 2022-10-23 stsp 
 775 13b2bc37 2022-10-23 stsp 		if (obj_type == GOT_OBJ_TYPE_REF_DELTA) {
 776 13b2bc37 2022-10-23 stsp 			err = copy_ref_delta(infd, outfd, outsize,
 777 13b2bc37 2022-10-23 stsp 			    buf, &buf_pos, &ctx);
 778 13b2bc37 2022-10-23 stsp 			if (err)
 779 13b2bc37 2022-10-23 stsp 				goto done;
 780 13b2bc37 2022-10-23 stsp 		} else if (obj_type == GOT_OBJ_TYPE_OFFSET_DELTA) {
 781 13b2bc37 2022-10-23 stsp 			err = copy_offset_delta(infd, outfd, outsize,
 782 13b2bc37 2022-10-23 stsp 			    buf, &buf_pos, &ctx);
 783 13b2bc37 2022-10-23 stsp 			if (err)
 784 13b2bc37 2022-10-23 stsp 				goto done;
 785 13b2bc37 2022-10-23 stsp 		}
 786 13b2bc37 2022-10-23 stsp 
 787 13b2bc37 2022-10-23 stsp 		err = copy_zstream(infd, outfd, outsize, buf, &buf_pos, &ctx);
 788 13b2bc37 2022-10-23 stsp 		if (err)
 789 13b2bc37 2022-10-23 stsp 			goto done;
 790 13b2bc37 2022-10-23 stsp 
 791 13b2bc37 2022-10-23 stsp 		nhave++;
 792 13b2bc37 2022-10-23 stsp 	}
 793 13b2bc37 2022-10-23 stsp 
 794 0ff2c315 2023-01-18 stsp 	log_debug("received %u objects", *nobj);
 795 13b2bc37 2022-10-23 stsp 
 796 3093e2d7 2023-02-04 op 	SHA1Final(expected_hash, &ctx);
 797 13b2bc37 2022-10-23 stsp 
 798 13b2bc37 2022-10-23 stsp 	remain = buf_len(buf) - buf_pos;
 799 13b2bc37 2022-10-23 stsp 	if (remain < SHA1_DIGEST_LENGTH) {
 800 13b2bc37 2022-10-23 stsp 		err = read_more_pack_stream(infd, buf,
 801 13b2bc37 2022-10-23 stsp 		    SHA1_DIGEST_LENGTH - remain);
 802 13b2bc37 2022-10-23 stsp 		if (err)
 803 13b2bc37 2022-10-23 stsp 			return err;
 804 13b2bc37 2022-10-23 stsp 	}
 805 13b2bc37 2022-10-23 stsp 
 806 3093e2d7 2023-02-04 op 	got_sha1_digest_to_str(expected_hash, hex, sizeof(hex));
 807 13b2bc37 2022-10-23 stsp 	log_debug("expect SHA1: %s", hex);
 808 13b2bc37 2022-10-23 stsp 	got_sha1_digest_to_str(buf_get(buf) + buf_pos, hex, sizeof(hex));
 809 13b2bc37 2022-10-23 stsp 	log_debug("actual SHA1: %s", hex);
 810 13b2bc37 2022-10-23 stsp 
 811 3093e2d7 2023-02-04 op 	if (memcmp(buf_get(buf) + buf_pos, expected_hash,
 812 13b2bc37 2022-10-23 stsp 	    SHA1_DIGEST_LENGTH) != 0) {
 813 13b2bc37 2022-10-23 stsp 		err = got_error(GOT_ERR_PACKFILE_CSUM);
 814 13b2bc37 2022-10-23 stsp 		goto done;
 815 13b2bc37 2022-10-23 stsp 	}
 816 13b2bc37 2022-10-23 stsp 
 817 3093e2d7 2023-02-04 op 	memcpy(hash, expected_hash, SHA1_DIGEST_LENGTH);
 818 13b2bc37 2022-10-23 stsp 
 819 3093e2d7 2023-02-04 op 	w = write(outfd, expected_hash, SHA1_DIGEST_LENGTH);
 820 13b2bc37 2022-10-23 stsp 	if (w == -1) {
 821 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("write");
 822 13b2bc37 2022-10-23 stsp 		goto done;
 823 13b2bc37 2022-10-23 stsp 	}
 824 13b2bc37 2022-10-23 stsp 	if (w != SHA1_DIGEST_LENGTH) {
 825 13b2bc37 2022-10-23 stsp 		err = got_error(GOT_ERR_IO);
 826 13b2bc37 2022-10-23 stsp 		goto done;
 827 13b2bc37 2022-10-23 stsp 	}
 828 13b2bc37 2022-10-23 stsp 
 829 13b2bc37 2022-10-23 stsp 	*outsize += SHA1_DIGEST_LENGTH;
 830 13b2bc37 2022-10-23 stsp 
 831 13b2bc37 2022-10-23 stsp 	if (fsync(outfd) == -1) {
 832 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("fsync");
 833 13b2bc37 2022-10-23 stsp 		goto done;
 834 13b2bc37 2022-10-23 stsp 	}
 835 13b2bc37 2022-10-23 stsp 	if (lseek(outfd, 0L, SEEK_SET) == -1) {
 836 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("lseek");
 837 13b2bc37 2022-10-23 stsp 		goto done;
 838 13b2bc37 2022-10-23 stsp 	}
 839 13b2bc37 2022-10-23 stsp done:
 840 13b2bc37 2022-10-23 stsp 	buf_free(buf);
 841 13b2bc37 2022-10-23 stsp 	return err;
 842 13b2bc37 2022-10-23 stsp }
 843 13b2bc37 2022-10-23 stsp 
 844 13b2bc37 2022-10-23 stsp static const struct got_error *
 845 1a52c9bf 2022-12-30 stsp report_pack_status(const struct got_error *unpack_err)
 846 13b2bc37 2022-10-23 stsp {
 847 13b2bc37 2022-10-23 stsp 	const struct got_error *err = NULL;
 848 1a52c9bf 2022-12-30 stsp 	struct repo_write_client *client = &repo_write_client;
 849 13b2bc37 2022-10-23 stsp 	struct gotd_imsg_packfile_status istatus;
 850 13b2bc37 2022-10-23 stsp 	struct ibuf *wbuf;
 851 13b2bc37 2022-10-23 stsp 	struct imsgbuf ibuf;
 852 13b2bc37 2022-10-23 stsp 	const char *unpack_ok = "unpack ok\n";
 853 13b2bc37 2022-10-23 stsp 	size_t len;
 854 e26970cc 2023-01-10 op 
 855 13b2bc37 2022-10-23 stsp 	imsg_init(&ibuf, client->fd);
 856 13b2bc37 2022-10-23 stsp 
 857 13b2bc37 2022-10-23 stsp 	if (unpack_err)
 858 13b2bc37 2022-10-23 stsp 		istatus.reason_len = strlen(unpack_err->msg);
 859 13b2bc37 2022-10-23 stsp 	else
 860 13b2bc37 2022-10-23 stsp 		istatus.reason_len = strlen(unpack_ok);
 861 13b2bc37 2022-10-23 stsp 
 862 13b2bc37 2022-10-23 stsp 	len = sizeof(istatus) + istatus.reason_len;
 863 13b2bc37 2022-10-23 stsp 	wbuf = imsg_create(&ibuf, GOTD_IMSG_PACKFILE_STATUS, PROC_REPO_WRITE,
 864 13b2bc37 2022-10-23 stsp 	    repo_write.pid, len);
 865 13b2bc37 2022-10-23 stsp 	if (wbuf == NULL) {
 866 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("imsg_create PACKFILE_STATUS");
 867 13b2bc37 2022-10-23 stsp 		goto done;
 868 13b2bc37 2022-10-23 stsp 	}
 869 13b2bc37 2022-10-23 stsp 
 870 13b2bc37 2022-10-23 stsp 	if (imsg_add(wbuf, &istatus, sizeof(istatus)) == -1) {
 871 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("imsg_add PACKFILE_STATUS");
 872 13b2bc37 2022-10-23 stsp 		goto done;
 873 13b2bc37 2022-10-23 stsp 	}
 874 13b2bc37 2022-10-23 stsp 
 875 13b2bc37 2022-10-23 stsp 	if (imsg_add(wbuf, err ? err->msg : unpack_ok,
 876 13b2bc37 2022-10-23 stsp 	    istatus.reason_len) == -1) {
 877 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("imsg_add PACKFILE_STATUS");
 878 13b2bc37 2022-10-23 stsp 		goto done;
 879 13b2bc37 2022-10-23 stsp 	}
 880 13b2bc37 2022-10-23 stsp 
 881 13b2bc37 2022-10-23 stsp 	wbuf->fd = -1;
 882 13b2bc37 2022-10-23 stsp 	imsg_close(&ibuf, wbuf);
 883 13b2bc37 2022-10-23 stsp 
 884 13b2bc37 2022-10-23 stsp 	err = gotd_imsg_flush(&ibuf);
 885 13b2bc37 2022-10-23 stsp done:
 886 13b2bc37 2022-10-23 stsp 	imsg_clear(&ibuf);
 887 13b2bc37 2022-10-23 stsp 	return err;
 888 13b2bc37 2022-10-23 stsp }
 889 13b2bc37 2022-10-23 stsp 
 890 13b2bc37 2022-10-23 stsp static const struct got_error *
 891 0ff2c315 2023-01-18 stsp recv_packfile(int *have_packfile, struct imsg *imsg)
 892 13b2bc37 2022-10-23 stsp {
 893 13b2bc37 2022-10-23 stsp 	const struct got_error *err = NULL, *unpack_err;
 894 1a52c9bf 2022-12-30 stsp 	struct repo_write_client *client = &repo_write_client;
 895 13b2bc37 2022-10-23 stsp 	struct gotd_imsg_recv_packfile ireq;
 896 13b2bc37 2022-10-23 stsp 	FILE *tempfiles[3] = { NULL, NULL, NULL };
 897 13b2bc37 2022-10-23 stsp 	struct repo_tempfile {
 898 13b2bc37 2022-10-23 stsp 		int fd;
 899 13b2bc37 2022-10-23 stsp 		int idx;
 900 13b2bc37 2022-10-23 stsp 	} repo_tempfiles[3] = { { - 1, - 1 }, { - 1, - 1 }, { - 1, - 1 }, };
 901 13b2bc37 2022-10-23 stsp 	int i;
 902 13b2bc37 2022-10-23 stsp 	size_t datalen;
 903 13b2bc37 2022-10-23 stsp 	struct imsgbuf ibuf;
 904 13b2bc37 2022-10-23 stsp 	struct got_ratelimit rl;
 905 13b2bc37 2022-10-23 stsp 	struct got_pack *pack = NULL;
 906 13b2bc37 2022-10-23 stsp 	off_t pack_filesize = 0;
 907 0ff2c315 2023-01-18 stsp 	uint32_t nobj = 0;
 908 13b2bc37 2022-10-23 stsp 
 909 13b2bc37 2022-10-23 stsp 	log_debug("packfile request received");
 910 13b2bc37 2022-10-23 stsp 
 911 0ff2c315 2023-01-18 stsp 	*have_packfile = 0;
 912 13b2bc37 2022-10-23 stsp 	got_ratelimit_init(&rl, 2, 0);
 913 13b2bc37 2022-10-23 stsp 
 914 13b2bc37 2022-10-23 stsp 	datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
 915 13b2bc37 2022-10-23 stsp 	if (datalen != sizeof(ireq))
 916 13b2bc37 2022-10-23 stsp 		return got_error(GOT_ERR_PRIVSEP_LEN);
 917 13b2bc37 2022-10-23 stsp 	memcpy(&ireq, imsg->data, sizeof(ireq));
 918 13b2bc37 2022-10-23 stsp 
 919 1a52c9bf 2022-12-30 stsp 	if (client->pack_pipe == -1 || client->packidx_fd == -1)
 920 13b2bc37 2022-10-23 stsp 		return got_error(GOT_ERR_PRIVSEP_NO_FD);
 921 13b2bc37 2022-10-23 stsp 
 922 1a52c9bf 2022-12-30 stsp 	imsg_init(&ibuf, client->fd);
 923 13b2bc37 2022-10-23 stsp 
 924 13b2bc37 2022-10-23 stsp 	if (imsg->fd == -1)
 925 13b2bc37 2022-10-23 stsp 		return got_error(GOT_ERR_PRIVSEP_NO_FD);
 926 13b2bc37 2022-10-23 stsp 
 927 1a52c9bf 2022-12-30 stsp 	pack = &client->pack;
 928 13b2bc37 2022-10-23 stsp 	memset(pack, 0, sizeof(*pack));
 929 13b2bc37 2022-10-23 stsp 	pack->fd = imsg->fd;
 930 13b2bc37 2022-10-23 stsp 	err = got_delta_cache_alloc(&pack->delta_cache);
 931 13b2bc37 2022-10-23 stsp 	if (err)
 932 13b2bc37 2022-10-23 stsp 		return err;
 933 13b2bc37 2022-10-23 stsp 
 934 13b2bc37 2022-10-23 stsp 	for (i = 0; i < nitems(repo_tempfiles); i++) {
 935 13b2bc37 2022-10-23 stsp 		struct repo_tempfile *t = &repo_tempfiles[i];
 936 13b2bc37 2022-10-23 stsp 		err = got_repo_temp_fds_get(&t->fd, &t->idx, repo_write.repo);
 937 13b2bc37 2022-10-23 stsp 		if (err)
 938 13b2bc37 2022-10-23 stsp 			goto done;
 939 13b2bc37 2022-10-23 stsp 	}
 940 13b2bc37 2022-10-23 stsp 
 941 13b2bc37 2022-10-23 stsp 	for (i = 0; i < nitems(tempfiles); i++) {
 942 e294dc4e 2023-02-03 mark 		int fd;
 943 13b2bc37 2022-10-23 stsp 		FILE *f;
 944 e294dc4e 2023-02-03 mark 
 945 e294dc4e 2023-02-03 mark 		fd = dup(repo_tempfiles[i].fd);
 946 13b2bc37 2022-10-23 stsp 		if (fd == -1) {
 947 13b2bc37 2022-10-23 stsp 			err = got_error_from_errno("dup");
 948 13b2bc37 2022-10-23 stsp 			goto done;
 949 13b2bc37 2022-10-23 stsp 		}
 950 13b2bc37 2022-10-23 stsp 		f = fdopen(fd, "w+");
 951 13b2bc37 2022-10-23 stsp 		if (f == NULL) {
 952 e294dc4e 2023-02-03 mark 			err = got_error_from_errno("fdopen");
 953 13b2bc37 2022-10-23 stsp 			close(fd);
 954 13b2bc37 2022-10-23 stsp 			goto done;
 955 13b2bc37 2022-10-23 stsp 		}
 956 13b2bc37 2022-10-23 stsp 		tempfiles[i] = f;
 957 13b2bc37 2022-10-23 stsp 	}
 958 13b2bc37 2022-10-23 stsp 
 959 13b2bc37 2022-10-23 stsp 	err = gotd_imsg_flush(&ibuf);
 960 13b2bc37 2022-10-23 stsp 	if (err)
 961 13b2bc37 2022-10-23 stsp 		goto done;
 962 13b2bc37 2022-10-23 stsp 
 963 13b2bc37 2022-10-23 stsp 	log_debug("receiving pack data");
 964 0ff2c315 2023-01-18 stsp 	unpack_err = recv_packdata(&pack_filesize, &nobj,
 965 3093e2d7 2023-02-04 op 	    client->pack_hash, client->pack_pipe, pack->fd);
 966 13b2bc37 2022-10-23 stsp 	if (ireq.report_status) {
 967 1a52c9bf 2022-12-30 stsp 		err = report_pack_status(unpack_err);
 968 13b2bc37 2022-10-23 stsp 		if (err) {
 969 13b2bc37 2022-10-23 stsp 			/* Git clients hang up after sending the pack file. */
 970 13b2bc37 2022-10-23 stsp 			if (err->code == GOT_ERR_EOF)
 971 13b2bc37 2022-10-23 stsp 				err = NULL;
 972 13b2bc37 2022-10-23 stsp 		}
 973 13b2bc37 2022-10-23 stsp 	}
 974 13b2bc37 2022-10-23 stsp 	if (unpack_err)
 975 13b2bc37 2022-10-23 stsp 		err = unpack_err;
 976 13b2bc37 2022-10-23 stsp 	if (err)
 977 13b2bc37 2022-10-23 stsp 		goto done;
 978 13b2bc37 2022-10-23 stsp 
 979 13b2bc37 2022-10-23 stsp 	log_debug("pack data received");
 980 0ff2c315 2023-01-18 stsp 
 981 0ff2c315 2023-01-18 stsp 	/*
 982 0ff2c315 2023-01-18 stsp 	 * Clients which are creating new references only will
 983 0ff2c315 2023-01-18 stsp 	 * send us an empty pack file.
 984 0ff2c315 2023-01-18 stsp 	 */
 985 0ff2c315 2023-01-18 stsp 	if (nobj == 0 &&
 986 0ff2c315 2023-01-18 stsp 	    pack_filesize == sizeof(struct got_packfile_hdr) &&
 987 0ff2c315 2023-01-18 stsp 	    client->nref_updates > 0 &&
 988 0ff2c315 2023-01-18 stsp 	    client->nref_updates == client->nref_new)
 989 0ff2c315 2023-01-18 stsp 		goto done;
 990 13b2bc37 2022-10-23 stsp 
 991 9a8e357c 2023-01-28 op 	/*
 992 9a8e357c 2023-01-28 op 	 * Clients which are deleting references only will send
 993 9a8e357c 2023-01-28 op 	 * no pack file.
 994 9a8e357c 2023-01-28 op 	 */
 995 9a8e357c 2023-01-28 op 	if (nobj == 0 &&
 996 9a8e357c 2023-01-28 op 	    client->nref_del > 0 &&
 997 9a8e357c 2023-01-28 op 	    client->nref_updates == client->nref_del)
 998 9a8e357c 2023-01-28 op 		goto done;
 999 9a8e357c 2023-01-28 op 
1000 13b2bc37 2022-10-23 stsp 	pack->filesize = pack_filesize;
1001 0ff2c315 2023-01-18 stsp 	*have_packfile = 1;
1002 13b2bc37 2022-10-23 stsp 
1003 ad4cc361 2022-10-27 op 	log_debug("begin indexing pack (%lld bytes in size)",
1004 ad4cc361 2022-10-27 op 	    (long long)pack->filesize);
1005 1a52c9bf 2022-12-30 stsp 	err = got_pack_index(pack, client->packidx_fd,
1006 3093e2d7 2023-02-04 op 	    tempfiles[0], tempfiles[1], tempfiles[2], client->pack_hash,
1007 13b2bc37 2022-10-23 stsp 	    pack_index_progress, NULL, &rl);
1008 13b2bc37 2022-10-23 stsp 	if (err)
1009 13b2bc37 2022-10-23 stsp 		goto done;
1010 13b2bc37 2022-10-23 stsp 	log_debug("done indexing pack");
1011 13b2bc37 2022-10-23 stsp 
1012 1a52c9bf 2022-12-30 stsp 	if (fsync(client->packidx_fd) == -1) {
1013 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("fsync");
1014 13b2bc37 2022-10-23 stsp 		goto done;
1015 13b2bc37 2022-10-23 stsp 	}
1016 1a52c9bf 2022-12-30 stsp 	if (lseek(client->packidx_fd, 0L, SEEK_SET) == -1)
1017 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("lseek");
1018 13b2bc37 2022-10-23 stsp done:
1019 1a52c9bf 2022-12-30 stsp 	if (close(client->pack_pipe) == -1 && err == NULL)
1020 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("close");
1021 1a52c9bf 2022-12-30 stsp 	client->pack_pipe = -1;
1022 13b2bc37 2022-10-23 stsp 	for (i = 0; i < nitems(repo_tempfiles); i++) {
1023 13b2bc37 2022-10-23 stsp 		struct repo_tempfile *t = &repo_tempfiles[i];
1024 13b2bc37 2022-10-23 stsp 		if (t->idx != -1)
1025 13b2bc37 2022-10-23 stsp 			got_repo_temp_fds_put(t->idx, repo_write.repo);
1026 13b2bc37 2022-10-23 stsp 	}
1027 13b2bc37 2022-10-23 stsp 	for (i = 0; i < nitems(tempfiles); i++) {
1028 13b2bc37 2022-10-23 stsp 		if (tempfiles[i] && fclose(tempfiles[i]) == EOF && err == NULL)
1029 13b2bc37 2022-10-23 stsp 			err = got_error_from_errno("fclose");
1030 13b2bc37 2022-10-23 stsp 	}
1031 13b2bc37 2022-10-23 stsp 	if (err)
1032 13b2bc37 2022-10-23 stsp 		got_pack_close(pack);
1033 13b2bc37 2022-10-23 stsp 	imsg_clear(&ibuf);
1034 13b2bc37 2022-10-23 stsp 	return err;
1035 13b2bc37 2022-10-23 stsp }
1036 13b2bc37 2022-10-23 stsp 
1037 13b2bc37 2022-10-23 stsp static const struct got_error *
1038 1a52c9bf 2022-12-30 stsp verify_packfile(void)
1039 13b2bc37 2022-10-23 stsp {
1040 13b2bc37 2022-10-23 stsp 	const struct got_error *err = NULL, *close_err;
1041 1a52c9bf 2022-12-30 stsp 	struct repo_write_client *client = &repo_write_client;
1042 13b2bc37 2022-10-23 stsp 	struct gotd_ref_update *ref_update;
1043 13b2bc37 2022-10-23 stsp 	struct got_packidx *packidx = NULL;
1044 13b2bc37 2022-10-23 stsp 	struct stat sb;
1045 13b2bc37 2022-10-23 stsp 	char *id_str = NULL;
1046 13b2bc37 2022-10-23 stsp 	int idx = -1;
1047 13b2bc37 2022-10-23 stsp 
1048 13b2bc37 2022-10-23 stsp 	if (STAILQ_EMPTY(&client->ref_updates)) {
1049 13b2bc37 2022-10-23 stsp 		return got_error_msg(GOT_ERR_BAD_REQUEST,
1050 13b2bc37 2022-10-23 stsp 		    "cannot verify pack file without any ref-updates");
1051 13b2bc37 2022-10-23 stsp 	}
1052 13b2bc37 2022-10-23 stsp 
1053 13b2bc37 2022-10-23 stsp 	if (client->pack.fd == -1) {
1054 13b2bc37 2022-10-23 stsp 		return got_error_msg(GOT_ERR_BAD_REQUEST,
1055 13b2bc37 2022-10-23 stsp 		    "invalid pack file handle during pack verification");
1056 13b2bc37 2022-10-23 stsp 	}
1057 13b2bc37 2022-10-23 stsp 	if (client->packidx_fd == -1) {
1058 13b2bc37 2022-10-23 stsp 		return got_error_msg(GOT_ERR_BAD_REQUEST,
1059 13b2bc37 2022-10-23 stsp 		    "invalid pack index handle during pack verification");
1060 13b2bc37 2022-10-23 stsp 	}
1061 13b2bc37 2022-10-23 stsp 
1062 13b2bc37 2022-10-23 stsp 	if (fstat(client->packidx_fd, &sb) == -1)
1063 13b2bc37 2022-10-23 stsp 		return got_error_from_errno("pack index fstat");
1064 13b2bc37 2022-10-23 stsp 
1065 13b2bc37 2022-10-23 stsp 	packidx = malloc(sizeof(*packidx));
1066 13b2bc37 2022-10-23 stsp 	memset(packidx, 0, sizeof(*packidx));
1067 13b2bc37 2022-10-23 stsp 	packidx->fd = client->packidx_fd;
1068 13b2bc37 2022-10-23 stsp 	client->packidx_fd = -1;
1069 13b2bc37 2022-10-23 stsp 	packidx->len = sb.st_size;
1070 e26970cc 2023-01-10 op 
1071 13b2bc37 2022-10-23 stsp 	err = got_packidx_init_hdr(packidx, 1, client->pack.filesize);
1072 13b2bc37 2022-10-23 stsp 	if (err)
1073 13b2bc37 2022-10-23 stsp 		return err;
1074 13b2bc37 2022-10-23 stsp 
1075 13b2bc37 2022-10-23 stsp 	STAILQ_FOREACH(ref_update, &client->ref_updates, entry) {
1076 9a8e357c 2023-01-28 op 		if (ref_update->delete_ref)
1077 9a8e357c 2023-01-28 op 			continue;
1078 9a8e357c 2023-01-28 op 
1079 13b2bc37 2022-10-23 stsp 		err = got_object_id_str(&id_str, &ref_update->new_id);
1080 13b2bc37 2022-10-23 stsp 		if (err)
1081 13b2bc37 2022-10-23 stsp 			goto done;
1082 13b2bc37 2022-10-23 stsp 
1083 13b2bc37 2022-10-23 stsp 		idx = got_packidx_get_object_idx(packidx, &ref_update->new_id);
1084 13b2bc37 2022-10-23 stsp 		if (idx == -1) {
1085 13b2bc37 2022-10-23 stsp 			err = got_error_fmt(GOT_ERR_BAD_PACKFILE,
1086 13b2bc37 2022-10-23 stsp 			    "advertised object %s is missing from pack file",
1087 13b2bc37 2022-10-23 stsp 			    id_str);
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 
1092 e26970cc 2023-01-10 op done:
1093 13b2bc37 2022-10-23 stsp 	close_err = got_packidx_close(packidx);
1094 13b2bc37 2022-10-23 stsp 	if (close_err && err == NULL)
1095 13b2bc37 2022-10-23 stsp 		err = close_err;
1096 13b2bc37 2022-10-23 stsp 	free(id_str);
1097 13b2bc37 2022-10-23 stsp 	return err;
1098 13b2bc37 2022-10-23 stsp }
1099 13b2bc37 2022-10-23 stsp 
1100 13b2bc37 2022-10-23 stsp static const struct got_error *
1101 1a52c9bf 2022-12-30 stsp install_packfile(struct gotd_imsgev *iev)
1102 13b2bc37 2022-10-23 stsp {
1103 1a52c9bf 2022-12-30 stsp 	struct repo_write_client *client = &repo_write_client;
1104 13b2bc37 2022-10-23 stsp 	struct gotd_imsg_packfile_install inst;
1105 13b2bc37 2022-10-23 stsp 	int ret;
1106 13b2bc37 2022-10-23 stsp 
1107 13b2bc37 2022-10-23 stsp 	memset(&inst, 0, sizeof(inst));
1108 13b2bc37 2022-10-23 stsp 	inst.client_id = client->id;
1109 3093e2d7 2023-02-04 op 	memcpy(inst.pack_hash, client->pack_hash, SHA1_DIGEST_LENGTH);
1110 13b2bc37 2022-10-23 stsp 
1111 13b2bc37 2022-10-23 stsp 	ret = gotd_imsg_compose_event(iev, GOTD_IMSG_PACKFILE_INSTALL,
1112 13b2bc37 2022-10-23 stsp 	    PROC_REPO_WRITE, -1, &inst, sizeof(inst));
1113 13b2bc37 2022-10-23 stsp 	if (ret == -1)
1114 13b2bc37 2022-10-23 stsp 		return got_error_from_errno("imsg_compose PACKFILE_INSTALL");
1115 13b2bc37 2022-10-23 stsp 
1116 13b2bc37 2022-10-23 stsp 	return NULL;
1117 13b2bc37 2022-10-23 stsp }
1118 13b2bc37 2022-10-23 stsp 
1119 13b2bc37 2022-10-23 stsp static const struct got_error *
1120 1a52c9bf 2022-12-30 stsp send_ref_updates_start(int nref_updates, struct gotd_imsgev *iev)
1121 13b2bc37 2022-10-23 stsp {
1122 1a52c9bf 2022-12-30 stsp 	struct repo_write_client *client = &repo_write_client;
1123 13b2bc37 2022-10-23 stsp 	struct gotd_imsg_ref_updates_start istart;
1124 13b2bc37 2022-10-23 stsp 	int ret;
1125 13b2bc37 2022-10-23 stsp 
1126 13b2bc37 2022-10-23 stsp 	memset(&istart, 0, sizeof(istart));
1127 13b2bc37 2022-10-23 stsp 	istart.nref_updates = nref_updates;
1128 13b2bc37 2022-10-23 stsp 	istart.client_id = client->id;
1129 13b2bc37 2022-10-23 stsp 
1130 13b2bc37 2022-10-23 stsp 	ret = gotd_imsg_compose_event(iev, GOTD_IMSG_REF_UPDATES_START,
1131 13b2bc37 2022-10-23 stsp 	    PROC_REPO_WRITE, -1, &istart, sizeof(istart));
1132 13b2bc37 2022-10-23 stsp 	if (ret == -1)
1133 13b2bc37 2022-10-23 stsp 		return got_error_from_errno("imsg_compose REF_UPDATES_START");
1134 13b2bc37 2022-10-23 stsp 
1135 13b2bc37 2022-10-23 stsp 	return NULL;
1136 13b2bc37 2022-10-23 stsp }
1137 13b2bc37 2022-10-23 stsp 
1138 13b2bc37 2022-10-23 stsp 
1139 13b2bc37 2022-10-23 stsp static const struct got_error *
1140 1a52c9bf 2022-12-30 stsp send_ref_update(struct gotd_ref_update *ref_update, struct gotd_imsgev *iev)
1141 13b2bc37 2022-10-23 stsp {
1142 1a52c9bf 2022-12-30 stsp 	struct repo_write_client *client = &repo_write_client;
1143 13b2bc37 2022-10-23 stsp 	struct gotd_imsg_ref_update iref;
1144 13b2bc37 2022-10-23 stsp 	const char *refname = got_ref_get_name(ref_update->ref);
1145 13b2bc37 2022-10-23 stsp 	struct ibuf *wbuf;
1146 13b2bc37 2022-10-23 stsp 	size_t len;
1147 13b2bc37 2022-10-23 stsp 
1148 13b2bc37 2022-10-23 stsp 	memset(&iref, 0, sizeof(iref));
1149 3093e2d7 2023-02-04 op 	memcpy(iref.old_id, ref_update->old_id.hash, SHA1_DIGEST_LENGTH);
1150 3093e2d7 2023-02-04 op 	memcpy(iref.new_id, ref_update->new_id.hash, SHA1_DIGEST_LENGTH);
1151 13b2bc37 2022-10-23 stsp 	iref.ref_is_new = ref_update->ref_is_new;
1152 9a8e357c 2023-01-28 op 	iref.delete_ref = ref_update->delete_ref;
1153 13b2bc37 2022-10-23 stsp 	iref.client_id = client->id;
1154 13b2bc37 2022-10-23 stsp 	iref.name_len = strlen(refname);
1155 13b2bc37 2022-10-23 stsp 
1156 13b2bc37 2022-10-23 stsp 	len = sizeof(iref) + iref.name_len;
1157 13b2bc37 2022-10-23 stsp 	wbuf = imsg_create(&iev->ibuf, GOTD_IMSG_REF_UPDATE, PROC_REPO_WRITE,
1158 13b2bc37 2022-10-23 stsp 	    repo_write.pid, len);
1159 13b2bc37 2022-10-23 stsp 	if (wbuf == NULL)
1160 13b2bc37 2022-10-23 stsp 		return got_error_from_errno("imsg_create REF_UPDATE");
1161 13b2bc37 2022-10-23 stsp 
1162 13b2bc37 2022-10-23 stsp 	if (imsg_add(wbuf, &iref, sizeof(iref)) == -1)
1163 13b2bc37 2022-10-23 stsp 		return got_error_from_errno("imsg_add REF_UPDATE");
1164 13b2bc37 2022-10-23 stsp 	if (imsg_add(wbuf, refname, iref.name_len) == -1)
1165 13b2bc37 2022-10-23 stsp 		return got_error_from_errno("imsg_add REF_UPDATE");
1166 13b2bc37 2022-10-23 stsp 
1167 13b2bc37 2022-10-23 stsp 	wbuf->fd = -1;
1168 13b2bc37 2022-10-23 stsp 	imsg_close(&iev->ibuf, wbuf);
1169 13b2bc37 2022-10-23 stsp 
1170 13b2bc37 2022-10-23 stsp 	gotd_imsg_event_add(iev);
1171 13b2bc37 2022-10-23 stsp 	return NULL;
1172 13b2bc37 2022-10-23 stsp }
1173 13b2bc37 2022-10-23 stsp 
1174 13b2bc37 2022-10-23 stsp static const struct got_error *
1175 1a52c9bf 2022-12-30 stsp update_refs(struct gotd_imsgev *iev)
1176 13b2bc37 2022-10-23 stsp {
1177 13b2bc37 2022-10-23 stsp 	const struct got_error *err = NULL;
1178 1a52c9bf 2022-12-30 stsp 	struct repo_write_client *client = &repo_write_client;
1179 13b2bc37 2022-10-23 stsp 	struct gotd_ref_update *ref_update;
1180 13b2bc37 2022-10-23 stsp 
1181 1a52c9bf 2022-12-30 stsp 	err = send_ref_updates_start(client->nref_updates, iev);
1182 13b2bc37 2022-10-23 stsp 	if (err)
1183 13b2bc37 2022-10-23 stsp 		return err;
1184 13b2bc37 2022-10-23 stsp 
1185 13b2bc37 2022-10-23 stsp 	STAILQ_FOREACH(ref_update, &client->ref_updates, entry) {
1186 1a52c9bf 2022-12-30 stsp 		err = send_ref_update(ref_update, iev);
1187 13b2bc37 2022-10-23 stsp 		if (err)
1188 13b2bc37 2022-10-23 stsp 			goto done;
1189 13b2bc37 2022-10-23 stsp 	}
1190 13b2bc37 2022-10-23 stsp done:
1191 13b2bc37 2022-10-23 stsp 	return err;
1192 13b2bc37 2022-10-23 stsp }
1193 13b2bc37 2022-10-23 stsp 
1194 13b2bc37 2022-10-23 stsp static const struct got_error *
1195 13b2bc37 2022-10-23 stsp recv_disconnect(struct imsg *imsg)
1196 13b2bc37 2022-10-23 stsp {
1197 13b2bc37 2022-10-23 stsp 	const struct got_error *err = NULL;
1198 13b2bc37 2022-10-23 stsp 	struct gotd_imsg_disconnect idisconnect;
1199 13b2bc37 2022-10-23 stsp 	size_t datalen;
1200 1a52c9bf 2022-12-30 stsp 	int pack_pipe = -1, idxfd = -1;
1201 1a52c9bf 2022-12-30 stsp 	struct repo_write_client *client = &repo_write_client;
1202 13b2bc37 2022-10-23 stsp 
1203 13b2bc37 2022-10-23 stsp 	datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
1204 13b2bc37 2022-10-23 stsp 	if (datalen != sizeof(idisconnect))
1205 13b2bc37 2022-10-23 stsp 		return got_error(GOT_ERR_PRIVSEP_LEN);
1206 13b2bc37 2022-10-23 stsp 	memcpy(&idisconnect, imsg->data, sizeof(idisconnect));
1207 13b2bc37 2022-10-23 stsp 
1208 13b2bc37 2022-10-23 stsp 	log_debug("client disconnecting");
1209 13b2bc37 2022-10-23 stsp 
1210 13b2bc37 2022-10-23 stsp 	while (!STAILQ_EMPTY(&client->ref_updates)) {
1211 13b2bc37 2022-10-23 stsp 		struct gotd_ref_update *ref_update;
1212 13b2bc37 2022-10-23 stsp 		ref_update = STAILQ_FIRST(&client->ref_updates);
1213 13b2bc37 2022-10-23 stsp 		STAILQ_REMOVE_HEAD(&client->ref_updates, entry);
1214 13b2bc37 2022-10-23 stsp 		got_ref_close(ref_update->ref);
1215 13b2bc37 2022-10-23 stsp 		free(ref_update);
1216 13b2bc37 2022-10-23 stsp 	}
1217 13b2bc37 2022-10-23 stsp 	err = got_pack_close(&client->pack);
1218 1a52c9bf 2022-12-30 stsp 	if (client->fd != -1 && close(client->fd) == -1)
1219 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("close");
1220 1a52c9bf 2022-12-30 stsp 	pack_pipe = client->pack_pipe;
1221 7fec5f4a 2022-10-28 stsp 	if (pack_pipe != -1 && close(pack_pipe) == -1 && err == NULL)
1222 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("close");
1223 1a52c9bf 2022-12-30 stsp 	idxfd = client->packidx_fd;
1224 13b2bc37 2022-10-23 stsp 	if (idxfd != -1 && close(idxfd) == -1 && err == NULL)
1225 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("close");
1226 13b2bc37 2022-10-23 stsp 	return err;
1227 13b2bc37 2022-10-23 stsp }
1228 13b2bc37 2022-10-23 stsp 
1229 13b2bc37 2022-10-23 stsp static const struct got_error *
1230 1a52c9bf 2022-12-30 stsp receive_pack_pipe(struct imsg *imsg, struct gotd_imsgev *iev)
1231 13b2bc37 2022-10-23 stsp {
1232 1a52c9bf 2022-12-30 stsp 	struct repo_write_client *client = &repo_write_client;
1233 13b2bc37 2022-10-23 stsp 	struct gotd_imsg_packfile_pipe ireq;
1234 13b2bc37 2022-10-23 stsp 	size_t datalen;
1235 13b2bc37 2022-10-23 stsp 
1236 13b2bc37 2022-10-23 stsp 	log_debug("receving pack pipe descriptor");
1237 13b2bc37 2022-10-23 stsp 
1238 13b2bc37 2022-10-23 stsp 	if (imsg->fd == -1)
1239 13b2bc37 2022-10-23 stsp 		return got_error(GOT_ERR_PRIVSEP_NO_FD);
1240 13b2bc37 2022-10-23 stsp 
1241 13b2bc37 2022-10-23 stsp 	datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
1242 13b2bc37 2022-10-23 stsp 	if (datalen != sizeof(ireq))
1243 13b2bc37 2022-10-23 stsp 		return got_error(GOT_ERR_PRIVSEP_LEN);
1244 13b2bc37 2022-10-23 stsp 	memcpy(&ireq, imsg->data, sizeof(ireq));
1245 13b2bc37 2022-10-23 stsp 
1246 1a52c9bf 2022-12-30 stsp 	if (client->pack_pipe != -1)
1247 13b2bc37 2022-10-23 stsp 		return got_error(GOT_ERR_PRIVSEP_MSG);
1248 13b2bc37 2022-10-23 stsp 
1249 1a52c9bf 2022-12-30 stsp 	client->pack_pipe = imsg->fd;
1250 13b2bc37 2022-10-23 stsp 	return NULL;
1251 13b2bc37 2022-10-23 stsp }
1252 13b2bc37 2022-10-23 stsp 
1253 13b2bc37 2022-10-23 stsp static const struct got_error *
1254 1a52c9bf 2022-12-30 stsp receive_pack_idx(struct imsg *imsg, struct gotd_imsgev *iev)
1255 13b2bc37 2022-10-23 stsp {
1256 1a52c9bf 2022-12-30 stsp 	struct repo_write_client *client = &repo_write_client;
1257 13b2bc37 2022-10-23 stsp 	struct gotd_imsg_packidx_file ireq;
1258 13b2bc37 2022-10-23 stsp 	size_t datalen;
1259 13b2bc37 2022-10-23 stsp 
1260 13b2bc37 2022-10-23 stsp 	log_debug("receving pack index output file");
1261 13b2bc37 2022-10-23 stsp 
1262 13b2bc37 2022-10-23 stsp 	if (imsg->fd == -1)
1263 13b2bc37 2022-10-23 stsp 		return got_error(GOT_ERR_PRIVSEP_NO_FD);
1264 13b2bc37 2022-10-23 stsp 
1265 13b2bc37 2022-10-23 stsp 	datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
1266 13b2bc37 2022-10-23 stsp 	if (datalen != sizeof(ireq))
1267 13b2bc37 2022-10-23 stsp 		return got_error(GOT_ERR_PRIVSEP_LEN);
1268 13b2bc37 2022-10-23 stsp 	memcpy(&ireq, imsg->data, sizeof(ireq));
1269 13b2bc37 2022-10-23 stsp 
1270 1a52c9bf 2022-12-30 stsp 	if (client->packidx_fd != -1)
1271 13b2bc37 2022-10-23 stsp 		return got_error(GOT_ERR_PRIVSEP_MSG);
1272 13b2bc37 2022-10-23 stsp 
1273 1a52c9bf 2022-12-30 stsp 	client->packidx_fd = imsg->fd;
1274 13b2bc37 2022-10-23 stsp 	return NULL;
1275 13b2bc37 2022-10-23 stsp }
1276 13b2bc37 2022-10-23 stsp 
1277 13b2bc37 2022-10-23 stsp static void
1278 ae7c1b78 2023-01-10 stsp repo_write_dispatch_session(int fd, short event, void *arg)
1279 13b2bc37 2022-10-23 stsp {
1280 13b2bc37 2022-10-23 stsp 	const struct got_error *err = NULL;
1281 13b2bc37 2022-10-23 stsp 	struct gotd_imsgev *iev = arg;
1282 13b2bc37 2022-10-23 stsp 	struct imsgbuf *ibuf = &iev->ibuf;
1283 13b2bc37 2022-10-23 stsp 	struct imsg imsg;
1284 1a52c9bf 2022-12-30 stsp 	struct repo_write_client *client = &repo_write_client;
1285 13b2bc37 2022-10-23 stsp 	ssize_t n;
1286 0ff2c315 2023-01-18 stsp 	int shut = 0, have_packfile = 0;
1287 13b2bc37 2022-10-23 stsp 
1288 13b2bc37 2022-10-23 stsp 	if (event & EV_READ) {
1289 13b2bc37 2022-10-23 stsp 		if ((n = imsg_read(ibuf)) == -1 && errno != EAGAIN)
1290 13b2bc37 2022-10-23 stsp 			fatal("imsg_read error");
1291 13b2bc37 2022-10-23 stsp 		if (n == 0)	/* Connection closed. */
1292 13b2bc37 2022-10-23 stsp 			shut = 1;
1293 13b2bc37 2022-10-23 stsp 	}
1294 13b2bc37 2022-10-23 stsp 
1295 13b2bc37 2022-10-23 stsp 	if (event & EV_WRITE) {
1296 13b2bc37 2022-10-23 stsp 		n = msgbuf_write(&ibuf->w);
1297 13b2bc37 2022-10-23 stsp 		if (n == -1 && errno != EAGAIN)
1298 13b2bc37 2022-10-23 stsp 			fatal("msgbuf_write");
1299 13b2bc37 2022-10-23 stsp 		if (n == 0)	/* Connection closed. */
1300 13b2bc37 2022-10-23 stsp 			shut = 1;
1301 13b2bc37 2022-10-23 stsp 	}
1302 13b2bc37 2022-10-23 stsp 
1303 13b2bc37 2022-10-23 stsp 	for (;;) {
1304 13b2bc37 2022-10-23 stsp 		if ((n = imsg_get(ibuf, &imsg)) == -1)
1305 13b2bc37 2022-10-23 stsp 			fatal("%s: imsg_get error", __func__);
1306 13b2bc37 2022-10-23 stsp 		if (n == 0)	/* No more messages. */
1307 13b2bc37 2022-10-23 stsp 			break;
1308 13b2bc37 2022-10-23 stsp 
1309 1a52c9bf 2022-12-30 stsp 		if (imsg.hdr.type != GOTD_IMSG_LIST_REFS_INTERNAL &&
1310 1a52c9bf 2022-12-30 stsp 		    client->id == 0) {
1311 1a52c9bf 2022-12-30 stsp 			err = got_error(GOT_ERR_PRIVSEP_MSG);
1312 1a52c9bf 2022-12-30 stsp 			break;
1313 1a52c9bf 2022-12-30 stsp 		}
1314 1a52c9bf 2022-12-30 stsp 
1315 13b2bc37 2022-10-23 stsp 		switch (imsg.hdr.type) {
1316 13b2bc37 2022-10-23 stsp 		case GOTD_IMSG_LIST_REFS_INTERNAL:
1317 1a52c9bf 2022-12-30 stsp 			err = list_refs(&imsg);
1318 13b2bc37 2022-10-23 stsp 			if (err)
1319 13b2bc37 2022-10-23 stsp 				log_warnx("%s: ls-refs: %s", repo_write.title,
1320 13b2bc37 2022-10-23 stsp 				    err->msg);
1321 13b2bc37 2022-10-23 stsp 			break;
1322 13b2bc37 2022-10-23 stsp 		case GOTD_IMSG_REF_UPDATE:
1323 1a52c9bf 2022-12-30 stsp 			err = recv_ref_update(&imsg);
1324 13b2bc37 2022-10-23 stsp 			if (err)
1325 13b2bc37 2022-10-23 stsp 				log_warnx("%s: ref-update: %s",
1326 13b2bc37 2022-10-23 stsp 				    repo_write.title, err->msg);
1327 13b2bc37 2022-10-23 stsp 			break;
1328 13b2bc37 2022-10-23 stsp 		case GOTD_IMSG_PACKFILE_PIPE:
1329 1a52c9bf 2022-12-30 stsp 			err = receive_pack_pipe(&imsg, iev);
1330 13b2bc37 2022-10-23 stsp 			if (err) {
1331 13b2bc37 2022-10-23 stsp 				log_warnx("%s: receiving pack pipe: %s",
1332 13b2bc37 2022-10-23 stsp 				    repo_write.title, err->msg);
1333 13b2bc37 2022-10-23 stsp 				break;
1334 13b2bc37 2022-10-23 stsp 			}
1335 13b2bc37 2022-10-23 stsp 			break;
1336 13b2bc37 2022-10-23 stsp 		case GOTD_IMSG_PACKIDX_FILE:
1337 1a52c9bf 2022-12-30 stsp 			err = receive_pack_idx(&imsg, iev);
1338 13b2bc37 2022-10-23 stsp 			if (err) {
1339 13b2bc37 2022-10-23 stsp 				log_warnx("%s: receiving pack index: %s",
1340 13b2bc37 2022-10-23 stsp 				    repo_write.title, err->msg);
1341 13b2bc37 2022-10-23 stsp 				break;
1342 13b2bc37 2022-10-23 stsp 			}
1343 13b2bc37 2022-10-23 stsp 			break;
1344 13b2bc37 2022-10-23 stsp 		case GOTD_IMSG_RECV_PACKFILE:
1345 0ff2c315 2023-01-18 stsp 			err = recv_packfile(&have_packfile, &imsg);
1346 13b2bc37 2022-10-23 stsp 			if (err) {
1347 13b2bc37 2022-10-23 stsp 				log_warnx("%s: receive packfile: %s",
1348 13b2bc37 2022-10-23 stsp 				    repo_write.title, err->msg);
1349 13b2bc37 2022-10-23 stsp 				break;
1350 13b2bc37 2022-10-23 stsp 			}
1351 0ff2c315 2023-01-18 stsp 			if (have_packfile) {
1352 0ff2c315 2023-01-18 stsp 				err = verify_packfile();
1353 0ff2c315 2023-01-18 stsp 				if (err) {
1354 0ff2c315 2023-01-18 stsp 					log_warnx("%s: verify packfile: %s",
1355 0ff2c315 2023-01-18 stsp 					    repo_write.title, err->msg);
1356 0ff2c315 2023-01-18 stsp 					break;
1357 0ff2c315 2023-01-18 stsp 				}
1358 0ff2c315 2023-01-18 stsp 				err = install_packfile(iev);
1359 0ff2c315 2023-01-18 stsp 				if (err) {
1360 0ff2c315 2023-01-18 stsp 					log_warnx("%s: install packfile: %s",
1361 0ff2c315 2023-01-18 stsp 					    repo_write.title, err->msg);
1362 0ff2c315 2023-01-18 stsp 					break;
1363 0ff2c315 2023-01-18 stsp 				}
1364 13b2bc37 2022-10-23 stsp 			}
1365 1a52c9bf 2022-12-30 stsp 			err = update_refs(iev);
1366 13b2bc37 2022-10-23 stsp 			if (err) {
1367 13b2bc37 2022-10-23 stsp 				log_warnx("%s: update refs: %s",
1368 13b2bc37 2022-10-23 stsp 				    repo_write.title, err->msg);
1369 13b2bc37 2022-10-23 stsp 			}
1370 13b2bc37 2022-10-23 stsp 			break;
1371 13b2bc37 2022-10-23 stsp 		case GOTD_IMSG_DISCONNECT:
1372 13b2bc37 2022-10-23 stsp 			err = recv_disconnect(&imsg);
1373 13b2bc37 2022-10-23 stsp 			if (err)
1374 13b2bc37 2022-10-23 stsp 				log_warnx("%s: disconnect: %s",
1375 13b2bc37 2022-10-23 stsp 				    repo_write.title, err->msg);
1376 ae7c1b78 2023-01-10 stsp 			shut = 1;
1377 ae7c1b78 2023-01-10 stsp 			break;
1378 ae7c1b78 2023-01-10 stsp 		default:
1379 ae7c1b78 2023-01-10 stsp 			log_debug("%s: unexpected imsg %d", repo_write.title,
1380 ae7c1b78 2023-01-10 stsp 			    imsg.hdr.type);
1381 ae7c1b78 2023-01-10 stsp 			break;
1382 ae7c1b78 2023-01-10 stsp 		}
1383 ae7c1b78 2023-01-10 stsp 
1384 ae7c1b78 2023-01-10 stsp 		imsg_free(&imsg);
1385 ae7c1b78 2023-01-10 stsp 	}
1386 ae7c1b78 2023-01-10 stsp 
1387 ae7c1b78 2023-01-10 stsp 	if (!shut && check_cancelled(NULL) == NULL) {
1388 ae7c1b78 2023-01-10 stsp 		if (err &&
1389 ae7c1b78 2023-01-10 stsp 		    gotd_imsg_send_error_event(iev, PROC_REPO_WRITE,
1390 ae7c1b78 2023-01-10 stsp 		        client->id, err) == -1) {
1391 ae7c1b78 2023-01-10 stsp 			log_warnx("could not send error to parent: %s",
1392 ae7c1b78 2023-01-10 stsp 			    err->msg);
1393 ae7c1b78 2023-01-10 stsp 		}
1394 ae7c1b78 2023-01-10 stsp 		gotd_imsg_event_add(iev);
1395 ae7c1b78 2023-01-10 stsp 	} else {
1396 ae7c1b78 2023-01-10 stsp 		/* This pipe is dead. Remove its event handler */
1397 ae7c1b78 2023-01-10 stsp 		event_del(&iev->ev);
1398 ae7c1b78 2023-01-10 stsp 		event_loopexit(NULL);
1399 ae7c1b78 2023-01-10 stsp 	}
1400 ae7c1b78 2023-01-10 stsp }
1401 ae7c1b78 2023-01-10 stsp 
1402 ae7c1b78 2023-01-10 stsp static const struct got_error *
1403 ae7c1b78 2023-01-10 stsp recv_connect(struct imsg *imsg)
1404 ae7c1b78 2023-01-10 stsp {
1405 ae7c1b78 2023-01-10 stsp 	struct gotd_imsgev *iev = &repo_write.session_iev;
1406 ae7c1b78 2023-01-10 stsp 	size_t datalen;
1407 ae7c1b78 2023-01-10 stsp 
1408 ae7c1b78 2023-01-10 stsp 	datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
1409 ae7c1b78 2023-01-10 stsp 	if (datalen != 0)
1410 ae7c1b78 2023-01-10 stsp 		return got_error(GOT_ERR_PRIVSEP_LEN);
1411 ae7c1b78 2023-01-10 stsp 	if (imsg->fd == -1)
1412 ae7c1b78 2023-01-10 stsp 		return got_error(GOT_ERR_PRIVSEP_NO_FD);
1413 ae7c1b78 2023-01-10 stsp 
1414 ae7c1b78 2023-01-10 stsp 	if (repo_write.session_fd != -1)
1415 ae7c1b78 2023-01-10 stsp 		return got_error(GOT_ERR_PRIVSEP_MSG);
1416 ae7c1b78 2023-01-10 stsp 
1417 ae7c1b78 2023-01-10 stsp 	repo_write.session_fd = imsg->fd;
1418 ae7c1b78 2023-01-10 stsp 
1419 ae7c1b78 2023-01-10 stsp 	imsg_init(&iev->ibuf, repo_write.session_fd);
1420 ae7c1b78 2023-01-10 stsp 	iev->handler = repo_write_dispatch_session;
1421 ae7c1b78 2023-01-10 stsp 	iev->events = EV_READ;
1422 ae7c1b78 2023-01-10 stsp 	iev->handler_arg = NULL;
1423 ae7c1b78 2023-01-10 stsp 	event_set(&iev->ev, iev->ibuf.fd, EV_READ,
1424 ae7c1b78 2023-01-10 stsp 	    repo_write_dispatch_session, iev);
1425 ae7c1b78 2023-01-10 stsp 	gotd_imsg_event_add(iev);
1426 ae7c1b78 2023-01-10 stsp 
1427 ae7c1b78 2023-01-10 stsp 	return NULL;
1428 ae7c1b78 2023-01-10 stsp }
1429 ae7c1b78 2023-01-10 stsp 
1430 ae7c1b78 2023-01-10 stsp static void
1431 ae7c1b78 2023-01-10 stsp repo_write_dispatch(int fd, short event, void *arg)
1432 ae7c1b78 2023-01-10 stsp {
1433 ae7c1b78 2023-01-10 stsp 	const struct got_error *err = NULL;
1434 ae7c1b78 2023-01-10 stsp 	struct gotd_imsgev *iev = arg;
1435 ae7c1b78 2023-01-10 stsp 	struct imsgbuf *ibuf = &iev->ibuf;
1436 ae7c1b78 2023-01-10 stsp 	struct imsg imsg;
1437 ae7c1b78 2023-01-10 stsp 	ssize_t n;
1438 ae7c1b78 2023-01-10 stsp 	int shut = 0;
1439 ae7c1b78 2023-01-10 stsp 	struct repo_write_client *client = &repo_write_client;
1440 ae7c1b78 2023-01-10 stsp 
1441 ae7c1b78 2023-01-10 stsp 	if (event & EV_READ) {
1442 ae7c1b78 2023-01-10 stsp 		if ((n = imsg_read(ibuf)) == -1 && errno != EAGAIN)
1443 ae7c1b78 2023-01-10 stsp 			fatal("imsg_read error");
1444 ae7c1b78 2023-01-10 stsp 		if (n == 0)	/* Connection closed. */
1445 1a52c9bf 2022-12-30 stsp 			shut = 1;
1446 ae7c1b78 2023-01-10 stsp 	}
1447 ae7c1b78 2023-01-10 stsp 
1448 ae7c1b78 2023-01-10 stsp 	if (event & EV_WRITE) {
1449 ae7c1b78 2023-01-10 stsp 		n = msgbuf_write(&ibuf->w);
1450 ae7c1b78 2023-01-10 stsp 		if (n == -1 && errno != EAGAIN)
1451 ae7c1b78 2023-01-10 stsp 			fatal("msgbuf_write");
1452 ae7c1b78 2023-01-10 stsp 		if (n == 0)	/* Connection closed. */
1453 ae7c1b78 2023-01-10 stsp 			shut = 1;
1454 ae7c1b78 2023-01-10 stsp 	}
1455 ae7c1b78 2023-01-10 stsp 
1456 ae7c1b78 2023-01-10 stsp 	while (err == NULL && check_cancelled(NULL) == NULL) {
1457 ae7c1b78 2023-01-10 stsp 		if ((n = imsg_get(ibuf, &imsg)) == -1)
1458 ae7c1b78 2023-01-10 stsp 			fatal("%s: imsg_get", __func__);
1459 ae7c1b78 2023-01-10 stsp 		if (n == 0)	/* No more messages. */
1460 13b2bc37 2022-10-23 stsp 			break;
1461 ae7c1b78 2023-01-10 stsp 
1462 ae7c1b78 2023-01-10 stsp 		switch (imsg.hdr.type) {
1463 ae7c1b78 2023-01-10 stsp 		case GOTD_IMSG_CONNECT_REPO_CHILD:
1464 ae7c1b78 2023-01-10 stsp 			err = recv_connect(&imsg);
1465 ae7c1b78 2023-01-10 stsp 			break;
1466 13b2bc37 2022-10-23 stsp 		default:
1467 13b2bc37 2022-10-23 stsp 			log_debug("%s: unexpected imsg %d", repo_write.title,
1468 13b2bc37 2022-10-23 stsp 			    imsg.hdr.type);
1469 13b2bc37 2022-10-23 stsp 			break;
1470 13b2bc37 2022-10-23 stsp 		}
1471 13b2bc37 2022-10-23 stsp 
1472 13b2bc37 2022-10-23 stsp 		imsg_free(&imsg);
1473 13b2bc37 2022-10-23 stsp 	}
1474 13b2bc37 2022-10-23 stsp 
1475 13b2bc37 2022-10-23 stsp 	if (!shut && check_cancelled(NULL) == NULL) {
1476 13b2bc37 2022-10-23 stsp 		if (err &&
1477 13b2bc37 2022-10-23 stsp 		    gotd_imsg_send_error_event(iev, PROC_REPO_WRITE,
1478 1a52c9bf 2022-12-30 stsp 		        client->id, err) == -1) {
1479 13b2bc37 2022-10-23 stsp 			log_warnx("could not send error to parent: %s",
1480 13b2bc37 2022-10-23 stsp 			    err->msg);
1481 13b2bc37 2022-10-23 stsp 		}
1482 13b2bc37 2022-10-23 stsp 		gotd_imsg_event_add(iev);
1483 13b2bc37 2022-10-23 stsp 	} else {
1484 13b2bc37 2022-10-23 stsp 		/* This pipe is dead. Remove its event handler */
1485 13b2bc37 2022-10-23 stsp 		event_del(&iev->ev);
1486 13b2bc37 2022-10-23 stsp 		event_loopexit(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 void
1491 eec68231 2022-12-14 stsp repo_write_main(const char *title, const char *repo_path,
1492 eec68231 2022-12-14 stsp     int *pack_fds, int *temp_fds)
1493 13b2bc37 2022-10-23 stsp {
1494 13b2bc37 2022-10-23 stsp 	const struct got_error *err = NULL;
1495 13b2bc37 2022-10-23 stsp 	struct gotd_imsgev iev;
1496 13b2bc37 2022-10-23 stsp 
1497 13b2bc37 2022-10-23 stsp 	repo_write.title = title;
1498 13b2bc37 2022-10-23 stsp 	repo_write.pid = getpid();
1499 13b2bc37 2022-10-23 stsp 	repo_write.pack_fds = pack_fds;
1500 13b2bc37 2022-10-23 stsp 	repo_write.temp_fds = temp_fds;
1501 ae7c1b78 2023-01-10 stsp 	repo_write.session_fd = -1;
1502 ae7c1b78 2023-01-10 stsp 	repo_write.session_iev.ibuf.fd = -1;
1503 13b2bc37 2022-10-23 stsp 
1504 1a52c9bf 2022-12-30 stsp 	STAILQ_INIT(&repo_write_client.ref_updates);
1505 13b2bc37 2022-10-23 stsp 
1506 eec68231 2022-12-14 stsp 	err = got_repo_open(&repo_write.repo, repo_path, NULL, pack_fds);
1507 13b2bc37 2022-10-23 stsp 	if (err)
1508 13b2bc37 2022-10-23 stsp 		goto done;
1509 13b2bc37 2022-10-23 stsp 	if (!got_repo_is_bare(repo_write.repo)) {
1510 13b2bc37 2022-10-23 stsp 		err = got_error_msg(GOT_ERR_NOT_GIT_REPO,
1511 13b2bc37 2022-10-23 stsp 		    "bare git repository required");
1512 13b2bc37 2022-10-23 stsp 		goto done;
1513 13b2bc37 2022-10-23 stsp 	}
1514 13b2bc37 2022-10-23 stsp 
1515 13b2bc37 2022-10-23 stsp 	got_repo_temp_fds_set(repo_write.repo, temp_fds);
1516 13b2bc37 2022-10-23 stsp 
1517 13b2bc37 2022-10-23 stsp 	signal(SIGINT, catch_sigint);
1518 13b2bc37 2022-10-23 stsp 	signal(SIGTERM, catch_sigterm);
1519 13b2bc37 2022-10-23 stsp 	signal(SIGPIPE, SIG_IGN);
1520 13b2bc37 2022-10-23 stsp 	signal(SIGHUP, SIG_IGN);
1521 13b2bc37 2022-10-23 stsp 
1522 8c6fc146 2022-11-17 stsp 	imsg_init(&iev.ibuf, GOTD_FILENO_MSG_PIPE);
1523 13b2bc37 2022-10-23 stsp 	iev.handler = repo_write_dispatch;
1524 13b2bc37 2022-10-23 stsp 	iev.events = EV_READ;
1525 13b2bc37 2022-10-23 stsp 	iev.handler_arg = NULL;
1526 13b2bc37 2022-10-23 stsp 	event_set(&iev.ev, iev.ibuf.fd, EV_READ, repo_write_dispatch, &iev);
1527 b50a2b46 2022-12-29 stsp 	if (gotd_imsg_compose_event(&iev, GOTD_IMSG_REPO_CHILD_READY,
1528 b50a2b46 2022-12-29 stsp 	    PROC_REPO_WRITE, -1, NULL, 0) == -1) {
1529 b50a2b46 2022-12-29 stsp 		err = got_error_from_errno("imsg compose REPO_CHILD_READY");
1530 13b2bc37 2022-10-23 stsp 		goto done;
1531 13b2bc37 2022-10-23 stsp 	}
1532 13b2bc37 2022-10-23 stsp 
1533 13b2bc37 2022-10-23 stsp 	event_dispatch();
1534 13b2bc37 2022-10-23 stsp done:
1535 13b2bc37 2022-10-23 stsp 	if (err)
1536 13b2bc37 2022-10-23 stsp 		log_warnx("%s: %s", title, err->msg);
1537 13b2bc37 2022-10-23 stsp 	repo_write_shutdown();
1538 13b2bc37 2022-10-23 stsp }
1539 13b2bc37 2022-10-23 stsp 
1540 13b2bc37 2022-10-23 stsp void
1541 13b2bc37 2022-10-23 stsp repo_write_shutdown(void)
1542 13b2bc37 2022-10-23 stsp {
1543 13b2bc37 2022-10-23 stsp 	log_debug("%s: shutting down", repo_write.title);
1544 13b2bc37 2022-10-23 stsp 	if (repo_write.repo)
1545 13b2bc37 2022-10-23 stsp 		got_repo_close(repo_write.repo);
1546 13b2bc37 2022-10-23 stsp 	got_repo_pack_fds_close(repo_write.pack_fds);
1547 8193d041 2022-10-30 stsp 	got_repo_temp_fds_close(repo_write.temp_fds);
1548 ae7c1b78 2023-01-10 stsp 	if (repo_write.session_fd != -1)
1549 ae7c1b78 2023-01-10 stsp 		close(repo_write.session_fd);
1550 13b2bc37 2022-10-23 stsp 	exit(0);
1551 13b2bc37 2022-10-23 stsp }