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