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/tree.h>
  19 13b2bc37 2022-10-23 stsp #include <sys/time.h>
  20 13b2bc37 2022-10-23 stsp #include <sys/types.h>
  21 13b2bc37 2022-10-23 stsp #include <sys/stat.h>
  22 13b2bc37 2022-10-23 stsp #include <sys/socket.h>
  23 13b2bc37 2022-10-23 stsp #include <sys/un.h>
  24 13b2bc37 2022-10-23 stsp #include <sys/wait.h>
  25 13b2bc37 2022-10-23 stsp 
  26 13b2bc37 2022-10-23 stsp #include <fcntl.h>
  27 13b2bc37 2022-10-23 stsp #include <err.h>
  28 13b2bc37 2022-10-23 stsp #include <errno.h>
  29 13b2bc37 2022-10-23 stsp #include <event.h>
  30 13b2bc37 2022-10-23 stsp #include <limits.h>
  31 13b2bc37 2022-10-23 stsp #include <pwd.h>
  32 13b2bc37 2022-10-23 stsp #include <grp.h>
  33 13b2bc37 2022-10-23 stsp #include <imsg.h>
  34 13b2bc37 2022-10-23 stsp #include <sha1.h>
  35 13b2bc37 2022-10-23 stsp #include <signal.h>
  36 13b2bc37 2022-10-23 stsp #include <siphash.h>
  37 13b2bc37 2022-10-23 stsp #include <stdarg.h>
  38 13b2bc37 2022-10-23 stsp #include <stdio.h>
  39 13b2bc37 2022-10-23 stsp #include <stdlib.h>
  40 13b2bc37 2022-10-23 stsp #include <string.h>
  41 13b2bc37 2022-10-23 stsp #include <syslog.h>
  42 13b2bc37 2022-10-23 stsp #include <unistd.h>
  43 13b2bc37 2022-10-23 stsp 
  44 13b2bc37 2022-10-23 stsp #include "got_error.h"
  45 13b2bc37 2022-10-23 stsp #include "got_opentemp.h"
  46 13b2bc37 2022-10-23 stsp #include "got_path.h"
  47 13b2bc37 2022-10-23 stsp #include "got_repository.h"
  48 13b2bc37 2022-10-23 stsp #include "got_object.h"
  49 13b2bc37 2022-10-23 stsp #include "got_reference.h"
  50 13b2bc37 2022-10-23 stsp 
  51 13b2bc37 2022-10-23 stsp #include "got_lib_delta.h"
  52 13b2bc37 2022-10-23 stsp #include "got_lib_object.h"
  53 13b2bc37 2022-10-23 stsp #include "got_lib_object_cache.h"
  54 13b2bc37 2022-10-23 stsp #include "got_lib_sha1.h"
  55 13b2bc37 2022-10-23 stsp #include "got_lib_gitproto.h"
  56 13b2bc37 2022-10-23 stsp #include "got_lib_pack.h"
  57 13b2bc37 2022-10-23 stsp #include "got_lib_repository.h"
  58 13b2bc37 2022-10-23 stsp 
  59 13b2bc37 2022-10-23 stsp #include "gotd.h"
  60 13b2bc37 2022-10-23 stsp #include "log.h"
  61 d93ecf7d 2022-12-14 stsp #include "listen.h"
  62 0ccf3acb 2022-11-16 stsp #include "auth.h"
  63 13b2bc37 2022-10-23 stsp #include "repo_read.h"
  64 13b2bc37 2022-10-23 stsp #include "repo_write.h"
  65 13b2bc37 2022-10-23 stsp 
  66 13b2bc37 2022-10-23 stsp #ifndef nitems
  67 13b2bc37 2022-10-23 stsp #define nitems(_a)	(sizeof((_a)) / sizeof((_a)[0]))
  68 13b2bc37 2022-10-23 stsp #endif
  69 13b2bc37 2022-10-23 stsp 
  70 13b2bc37 2022-10-23 stsp struct gotd_client {
  71 13b2bc37 2022-10-23 stsp 	STAILQ_ENTRY(gotd_client)	 entry;
  72 13b2bc37 2022-10-23 stsp 	enum gotd_client_state		 state;
  73 13b2bc37 2022-10-23 stsp 	struct gotd_client_capability	*capabilities;
  74 13b2bc37 2022-10-23 stsp 	size_t				 ncapa_alloc;
  75 13b2bc37 2022-10-23 stsp 	size_t				 ncapabilities;
  76 13b2bc37 2022-10-23 stsp 	uint32_t			 id;
  77 13b2bc37 2022-10-23 stsp 	int				 fd;
  78 13b2bc37 2022-10-23 stsp 	int				 delta_cache_fd;
  79 13b2bc37 2022-10-23 stsp 	struct gotd_imsgev		 iev;
  80 13b2bc37 2022-10-23 stsp 	struct event			 tmo;
  81 13b2bc37 2022-10-23 stsp 	uid_t				 euid;
  82 13b2bc37 2022-10-23 stsp 	gid_t				 egid;
  83 13b2bc37 2022-10-23 stsp 	struct gotd_child_proc		*repo_read;
  84 13b2bc37 2022-10-23 stsp 	struct gotd_child_proc		*repo_write;
  85 13b2bc37 2022-10-23 stsp 	char				*packfile_path;
  86 13b2bc37 2022-10-23 stsp 	char				*packidx_path;
  87 13b2bc37 2022-10-23 stsp 	int				 nref_updates;
  88 13b2bc37 2022-10-23 stsp };
  89 13b2bc37 2022-10-23 stsp STAILQ_HEAD(gotd_clients, gotd_client);
  90 13b2bc37 2022-10-23 stsp 
  91 13b2bc37 2022-10-23 stsp static struct gotd_clients gotd_clients[GOTD_CLIENT_TABLE_SIZE];
  92 13b2bc37 2022-10-23 stsp static SIPHASH_KEY clients_hash_key;
  93 13b2bc37 2022-10-23 stsp volatile int client_cnt;
  94 13b2bc37 2022-10-23 stsp static struct timeval timeout = { 3600, 0 };
  95 13b2bc37 2022-10-23 stsp static struct gotd gotd;
  96 13b2bc37 2022-10-23 stsp 
  97 13b2bc37 2022-10-23 stsp void gotd_sighdlr(int sig, short event, void *arg);
  98 f1752522 2022-10-29 stsp static void gotd_shutdown(void);
  99 b50a2b46 2022-12-29 stsp static const struct got_error *start_repo_child(struct gotd_client *,
 100 b50a2b46 2022-12-29 stsp     enum gotd_procid, struct gotd_repo *, char *, const char *, int, int);
 101 b50a2b46 2022-12-29 stsp static void kill_proc(struct gotd_child_proc *, int);
 102 13b2bc37 2022-10-23 stsp 
 103 13b2bc37 2022-10-23 stsp __dead static void
 104 13b2bc37 2022-10-23 stsp usage()
 105 13b2bc37 2022-10-23 stsp {
 106 88dec179 2022-10-24 stsp 	fprintf(stderr, "usage: %s [-dv] [-f config-file]\n", getprogname());
 107 88dec179 2022-10-24 stsp 	exit(1);
 108 13b2bc37 2022-10-23 stsp }
 109 13b2bc37 2022-10-23 stsp 
 110 13b2bc37 2022-10-23 stsp static int
 111 13b2bc37 2022-10-23 stsp unix_socket_listen(const char *unix_socket_path, uid_t uid, gid_t gid)
 112 13b2bc37 2022-10-23 stsp {
 113 13b2bc37 2022-10-23 stsp 	struct sockaddr_un sun;
 114 13b2bc37 2022-10-23 stsp 	int fd = -1;
 115 13b2bc37 2022-10-23 stsp 	mode_t old_umask, mode;
 116 13b2bc37 2022-10-23 stsp 
 117 13b2bc37 2022-10-23 stsp 	fd = socket(AF_UNIX, SOCK_STREAM | SOCK_NONBLOCK| SOCK_CLOEXEC, 0);
 118 13b2bc37 2022-10-23 stsp 	if (fd == -1) {
 119 13b2bc37 2022-10-23 stsp 		log_warn("socket");
 120 13b2bc37 2022-10-23 stsp 		return -1;
 121 13b2bc37 2022-10-23 stsp 	}
 122 13b2bc37 2022-10-23 stsp 
 123 13b2bc37 2022-10-23 stsp 	sun.sun_family = AF_UNIX;
 124 13b2bc37 2022-10-23 stsp 	if (strlcpy(sun.sun_path, unix_socket_path,
 125 13b2bc37 2022-10-23 stsp 	    sizeof(sun.sun_path)) >= sizeof(sun.sun_path)) {
 126 13b2bc37 2022-10-23 stsp 		log_warnx("%s: name too long", unix_socket_path);
 127 13b2bc37 2022-10-23 stsp 		close(fd);
 128 13b2bc37 2022-10-23 stsp 		return -1;
 129 13b2bc37 2022-10-23 stsp 	}
 130 13b2bc37 2022-10-23 stsp 
 131 13b2bc37 2022-10-23 stsp 	if (unlink(unix_socket_path) == -1) {
 132 13b2bc37 2022-10-23 stsp 		if (errno != ENOENT) {
 133 13b2bc37 2022-10-23 stsp 			log_warn("unlink %s", unix_socket_path);
 134 13b2bc37 2022-10-23 stsp 			close(fd);
 135 13b2bc37 2022-10-23 stsp 			return -1;
 136 13b2bc37 2022-10-23 stsp 		}
 137 13b2bc37 2022-10-23 stsp 	}
 138 13b2bc37 2022-10-23 stsp 
 139 13b2bc37 2022-10-23 stsp 	old_umask = umask(S_IXUSR|S_IXGRP|S_IWOTH|S_IROTH|S_IXOTH);
 140 13b2bc37 2022-10-23 stsp 	mode = S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP;
 141 13b2bc37 2022-10-23 stsp 
 142 13b2bc37 2022-10-23 stsp 	if (bind(fd, (struct sockaddr *)&sun, sizeof(sun)) == -1) {
 143 13b2bc37 2022-10-23 stsp 		log_warn("bind: %s", unix_socket_path);
 144 13b2bc37 2022-10-23 stsp 		close(fd);
 145 13b2bc37 2022-10-23 stsp 		umask(old_umask);
 146 13b2bc37 2022-10-23 stsp 		return -1;
 147 13b2bc37 2022-10-23 stsp 	}
 148 13b2bc37 2022-10-23 stsp 
 149 13b2bc37 2022-10-23 stsp 	umask(old_umask);
 150 13b2bc37 2022-10-23 stsp 
 151 13b2bc37 2022-10-23 stsp 	if (chmod(unix_socket_path, mode) == -1) {
 152 13b2bc37 2022-10-23 stsp 		log_warn("chmod %o %s", mode, unix_socket_path);
 153 13b2bc37 2022-10-23 stsp 		close(fd);
 154 13b2bc37 2022-10-23 stsp 		unlink(unix_socket_path);
 155 13b2bc37 2022-10-23 stsp 		return -1;
 156 13b2bc37 2022-10-23 stsp 	}
 157 13b2bc37 2022-10-23 stsp 
 158 13b2bc37 2022-10-23 stsp 	if (chown(unix_socket_path, uid, gid) == -1) {
 159 13b2bc37 2022-10-23 stsp 		log_warn("chown %s uid=%d gid=%d", unix_socket_path, uid, gid);
 160 13b2bc37 2022-10-23 stsp 		close(fd);
 161 13b2bc37 2022-10-23 stsp 		unlink(unix_socket_path);
 162 13b2bc37 2022-10-23 stsp 		return -1;
 163 13b2bc37 2022-10-23 stsp 	}
 164 13b2bc37 2022-10-23 stsp 
 165 13b2bc37 2022-10-23 stsp 	if (listen(fd, GOTD_UNIX_SOCKET_BACKLOG) == -1) {
 166 13b2bc37 2022-10-23 stsp 		log_warn("listen");
 167 13b2bc37 2022-10-23 stsp 		close(fd);
 168 13b2bc37 2022-10-23 stsp 		unlink(unix_socket_path);
 169 13b2bc37 2022-10-23 stsp 		return -1;
 170 13b2bc37 2022-10-23 stsp 	}
 171 13b2bc37 2022-10-23 stsp 
 172 13b2bc37 2022-10-23 stsp 	return fd;
 173 13b2bc37 2022-10-23 stsp }
 174 13b2bc37 2022-10-23 stsp 
 175 13b2bc37 2022-10-23 stsp static struct group *
 176 13b2bc37 2022-10-23 stsp match_group(gid_t *groups, int ngroups, const char *unix_group_name)
 177 13b2bc37 2022-10-23 stsp {
 178 13b2bc37 2022-10-23 stsp 	struct group *gr;
 179 13b2bc37 2022-10-23 stsp 	int i;
 180 13b2bc37 2022-10-23 stsp 
 181 13b2bc37 2022-10-23 stsp 	for (i = 0; i < ngroups; i++) {
 182 13b2bc37 2022-10-23 stsp 		gr = getgrgid(groups[i]);
 183 13b2bc37 2022-10-23 stsp 		if (gr == NULL) {
 184 13b2bc37 2022-10-23 stsp 			log_warn("getgrgid %d", groups[i]);
 185 13b2bc37 2022-10-23 stsp 			continue;
 186 13b2bc37 2022-10-23 stsp 		}
 187 13b2bc37 2022-10-23 stsp 		if (strcmp(gr->gr_name, unix_group_name) == 0)
 188 13b2bc37 2022-10-23 stsp 			return gr;
 189 13b2bc37 2022-10-23 stsp 	}
 190 13b2bc37 2022-10-23 stsp 
 191 13b2bc37 2022-10-23 stsp 	return NULL;
 192 13b2bc37 2022-10-23 stsp }
 193 13b2bc37 2022-10-23 stsp 
 194 13b2bc37 2022-10-23 stsp static uint64_t
 195 13b2bc37 2022-10-23 stsp client_hash(uint32_t client_id)
 196 13b2bc37 2022-10-23 stsp {
 197 13b2bc37 2022-10-23 stsp 	return SipHash24(&clients_hash_key, &client_id, sizeof(client_id));
 198 13b2bc37 2022-10-23 stsp }
 199 13b2bc37 2022-10-23 stsp 
 200 13b2bc37 2022-10-23 stsp static void
 201 13b2bc37 2022-10-23 stsp add_client(struct gotd_client *client)
 202 13b2bc37 2022-10-23 stsp {
 203 13b2bc37 2022-10-23 stsp 	uint64_t slot = client_hash(client->id) % nitems(gotd_clients);
 204 13b2bc37 2022-10-23 stsp 	STAILQ_INSERT_HEAD(&gotd_clients[slot], client, entry);
 205 13b2bc37 2022-10-23 stsp 	client_cnt++;
 206 13b2bc37 2022-10-23 stsp }
 207 13b2bc37 2022-10-23 stsp 
 208 13b2bc37 2022-10-23 stsp static struct gotd_client *
 209 13b2bc37 2022-10-23 stsp find_client(uint32_t client_id)
 210 13b2bc37 2022-10-23 stsp {
 211 13b2bc37 2022-10-23 stsp 	uint64_t slot;
 212 13b2bc37 2022-10-23 stsp 	struct gotd_client *c;
 213 13b2bc37 2022-10-23 stsp 
 214 13b2bc37 2022-10-23 stsp 	slot = client_hash(client_id) % nitems(gotd_clients);
 215 13b2bc37 2022-10-23 stsp 	STAILQ_FOREACH(c, &gotd_clients[slot], entry) {
 216 13b2bc37 2022-10-23 stsp 		if (c->id == client_id)
 217 13b2bc37 2022-10-23 stsp 			return c;
 218 13b2bc37 2022-10-23 stsp 	}
 219 13b2bc37 2022-10-23 stsp 
 220 13b2bc37 2022-10-23 stsp 	return NULL;
 221 13b2bc37 2022-10-23 stsp }
 222 13b2bc37 2022-10-23 stsp 
 223 13b2bc37 2022-10-23 stsp static struct gotd_child_proc *
 224 13b2bc37 2022-10-23 stsp get_client_proc(struct gotd_client *client)
 225 13b2bc37 2022-10-23 stsp {
 226 13b2bc37 2022-10-23 stsp 	if (client->repo_read && client->repo_write) {
 227 13b2bc37 2022-10-23 stsp 		fatalx("uid %d is reading and writing in the same session",
 228 13b2bc37 2022-10-23 stsp 		    client->euid);
 229 13b2bc37 2022-10-23 stsp 		/* NOTREACHED */
 230 13b2bc37 2022-10-23 stsp 	}
 231 13b2bc37 2022-10-23 stsp 
 232 13b2bc37 2022-10-23 stsp 	if (client->repo_read)
 233 13b2bc37 2022-10-23 stsp 		return client->repo_read;
 234 13b2bc37 2022-10-23 stsp 	else if (client->repo_write)
 235 13b2bc37 2022-10-23 stsp 		return client->repo_write;
 236 b50a2b46 2022-12-29 stsp 
 237 b50a2b46 2022-12-29 stsp 	return NULL;
 238 b50a2b46 2022-12-29 stsp }
 239 b50a2b46 2022-12-29 stsp 
 240 b50a2b46 2022-12-29 stsp static struct gotd_client *
 241 b50a2b46 2022-12-29 stsp find_client_by_proc_fd(int fd)
 242 b50a2b46 2022-12-29 stsp {
 243 b50a2b46 2022-12-29 stsp 	uint64_t slot;
 244 b50a2b46 2022-12-29 stsp 
 245 b50a2b46 2022-12-29 stsp 	for (slot = 0; slot < nitems(gotd_clients); slot++) {
 246 b50a2b46 2022-12-29 stsp 		struct gotd_client *c;
 247 b50a2b46 2022-12-29 stsp 
 248 b50a2b46 2022-12-29 stsp 		STAILQ_FOREACH(c, &gotd_clients[slot], entry) {
 249 b50a2b46 2022-12-29 stsp 			struct gotd_child_proc *proc = get_client_proc(c);
 250 b50a2b46 2022-12-29 stsp 			if (proc && proc->iev.ibuf.fd == fd)
 251 b50a2b46 2022-12-29 stsp 				return c;
 252 b50a2b46 2022-12-29 stsp 		}
 253 b50a2b46 2022-12-29 stsp 	}
 254 f1752522 2022-10-29 stsp 
 255 13b2bc37 2022-10-23 stsp 	return NULL;
 256 13b2bc37 2022-10-23 stsp }
 257 13b2bc37 2022-10-23 stsp 
 258 13b2bc37 2022-10-23 stsp static int
 259 13b2bc37 2022-10-23 stsp client_is_reading(struct gotd_client *client)
 260 13b2bc37 2022-10-23 stsp {
 261 13b2bc37 2022-10-23 stsp 	return client->repo_read != NULL;
 262 13b2bc37 2022-10-23 stsp }
 263 13b2bc37 2022-10-23 stsp 
 264 13b2bc37 2022-10-23 stsp static int
 265 13b2bc37 2022-10-23 stsp client_is_writing(struct gotd_client *client)
 266 13b2bc37 2022-10-23 stsp {
 267 13b2bc37 2022-10-23 stsp 	return client->repo_write != NULL;
 268 13b2bc37 2022-10-23 stsp }
 269 13b2bc37 2022-10-23 stsp 
 270 13b2bc37 2022-10-23 stsp static const struct got_error *
 271 13b2bc37 2022-10-23 stsp ensure_client_is_reading(struct gotd_client *client)
 272 13b2bc37 2022-10-23 stsp {
 273 13b2bc37 2022-10-23 stsp 	if (!client_is_reading(client)) {
 274 13b2bc37 2022-10-23 stsp 		return got_error_fmt(GOT_ERR_BAD_PACKET,
 275 13b2bc37 2022-10-23 stsp 		    "uid %d made a read-request but is not reading from "
 276 13b2bc37 2022-10-23 stsp 		    "a repository", client->euid);
 277 13b2bc37 2022-10-23 stsp 	}
 278 13b2bc37 2022-10-23 stsp 
 279 13b2bc37 2022-10-23 stsp 	return NULL;
 280 13b2bc37 2022-10-23 stsp }
 281 13b2bc37 2022-10-23 stsp 
 282 13b2bc37 2022-10-23 stsp static const struct got_error *
 283 13b2bc37 2022-10-23 stsp ensure_client_is_writing(struct gotd_client *client)
 284 13b2bc37 2022-10-23 stsp {
 285 13b2bc37 2022-10-23 stsp 	if (!client_is_writing(client)) {
 286 13b2bc37 2022-10-23 stsp 		return got_error_fmt(GOT_ERR_BAD_PACKET,
 287 13b2bc37 2022-10-23 stsp 		    "uid %d made a write-request but is not writing to "
 288 13b2bc37 2022-10-23 stsp 		    "a repository", client->euid);
 289 13b2bc37 2022-10-23 stsp 	}
 290 13b2bc37 2022-10-23 stsp 
 291 13b2bc37 2022-10-23 stsp 	return NULL;
 292 13b2bc37 2022-10-23 stsp }
 293 13b2bc37 2022-10-23 stsp 
 294 13b2bc37 2022-10-23 stsp static const struct got_error *
 295 13b2bc37 2022-10-23 stsp ensure_client_is_not_writing(struct gotd_client *client)
 296 13b2bc37 2022-10-23 stsp {
 297 13b2bc37 2022-10-23 stsp 	if (client_is_writing(client)) {
 298 13b2bc37 2022-10-23 stsp 		return got_error_fmt(GOT_ERR_BAD_PACKET,
 299 13b2bc37 2022-10-23 stsp 		    "uid %d made a read-request but is writing to "
 300 13b2bc37 2022-10-23 stsp 		    "a repository", client->euid);
 301 13b2bc37 2022-10-23 stsp 	}
 302 13b2bc37 2022-10-23 stsp 
 303 13b2bc37 2022-10-23 stsp 	return NULL;
 304 13b2bc37 2022-10-23 stsp }
 305 13b2bc37 2022-10-23 stsp 
 306 13b2bc37 2022-10-23 stsp static const struct got_error *
 307 13b2bc37 2022-10-23 stsp ensure_client_is_not_reading(struct gotd_client *client)
 308 13b2bc37 2022-10-23 stsp {
 309 13b2bc37 2022-10-23 stsp 	if (client_is_reading(client)) {
 310 13b2bc37 2022-10-23 stsp 		return got_error_fmt(GOT_ERR_BAD_PACKET,
 311 13b2bc37 2022-10-23 stsp 		    "uid %d made a write-request but is reading from "
 312 13b2bc37 2022-10-23 stsp 		    "a repository", client->euid);
 313 13b2bc37 2022-10-23 stsp 	}
 314 13b2bc37 2022-10-23 stsp 
 315 13b2bc37 2022-10-23 stsp 	return NULL;
 316 b50a2b46 2022-12-29 stsp }
 317 b50a2b46 2022-12-29 stsp 
 318 b50a2b46 2022-12-29 stsp static void
 319 b50a2b46 2022-12-29 stsp wait_for_children(pid_t child_pid)
 320 b50a2b46 2022-12-29 stsp {
 321 b50a2b46 2022-12-29 stsp 	pid_t pid;
 322 b50a2b46 2022-12-29 stsp 	int status;
 323 b50a2b46 2022-12-29 stsp 
 324 b50a2b46 2022-12-29 stsp 	if (child_pid == 0)
 325 b50a2b46 2022-12-29 stsp 		log_debug("waiting for children to terminate");
 326 b50a2b46 2022-12-29 stsp 	else
 327 b50a2b46 2022-12-29 stsp 		log_debug("waiting for child PID %ld to terminate",
 328 b50a2b46 2022-12-29 stsp 		    (long)child_pid);
 329 b50a2b46 2022-12-29 stsp 
 330 b50a2b46 2022-12-29 stsp 	do {
 331 b50a2b46 2022-12-29 stsp 		pid = wait(&status);
 332 b50a2b46 2022-12-29 stsp 		if (pid == -1) {
 333 b50a2b46 2022-12-29 stsp 			if (errno != EINTR && errno != ECHILD)
 334 b50a2b46 2022-12-29 stsp 				fatal("wait");
 335 b50a2b46 2022-12-29 stsp 		} else if (WIFSIGNALED(status)) {
 336 b50a2b46 2022-12-29 stsp 			log_warnx("child PID %ld terminated; signal %d",
 337 b50a2b46 2022-12-29 stsp 			    (long)pid, WTERMSIG(status));
 338 b50a2b46 2022-12-29 stsp 		}	
 339 b50a2b46 2022-12-29 stsp 	} while (pid != -1 || (pid == -1 && errno == EINTR));
 340 13b2bc37 2022-10-23 stsp }
 341 13b2bc37 2022-10-23 stsp 
 342 13b2bc37 2022-10-23 stsp static void
 343 13b2bc37 2022-10-23 stsp disconnect(struct gotd_client *client)
 344 13b2bc37 2022-10-23 stsp {
 345 13b2bc37 2022-10-23 stsp 	struct gotd_imsg_disconnect idisconnect;
 346 13b2bc37 2022-10-23 stsp 	struct gotd_child_proc *proc = get_client_proc(client);
 347 b50a2b46 2022-12-29 stsp 	struct gotd_child_proc *listen_proc = &gotd.listen_proc;
 348 13b2bc37 2022-10-23 stsp 	uint64_t slot;
 349 13b2bc37 2022-10-23 stsp 
 350 13b2bc37 2022-10-23 stsp 	log_debug("uid %d: disconnecting", client->euid);
 351 13b2bc37 2022-10-23 stsp 
 352 13b2bc37 2022-10-23 stsp 	idisconnect.client_id = client->id;
 353 f1752522 2022-10-29 stsp 	if (proc) {
 354 f1752522 2022-10-29 stsp 		if (gotd_imsg_compose_event(&proc->iev,
 355 f1752522 2022-10-29 stsp 		    GOTD_IMSG_DISCONNECT, PROC_GOTD, -1,
 356 f1752522 2022-10-29 stsp 		    &idisconnect, sizeof(idisconnect)) == -1)
 357 f1752522 2022-10-29 stsp 			log_warn("imsg compose DISCONNECT");
 358 b50a2b46 2022-12-29 stsp 
 359 b50a2b46 2022-12-29 stsp 		msgbuf_clear(&proc->iev.ibuf.w);
 360 b50a2b46 2022-12-29 stsp 		close(proc->iev.ibuf.fd);
 361 b50a2b46 2022-12-29 stsp 		kill_proc(proc, 0);
 362 b50a2b46 2022-12-29 stsp 		wait_for_children(proc->pid);
 363 b50a2b46 2022-12-29 stsp 		free(proc);
 364 b50a2b46 2022-12-29 stsp 		proc = NULL;
 365 f1752522 2022-10-29 stsp 	}
 366 d93ecf7d 2022-12-14 stsp 
 367 d93ecf7d 2022-12-14 stsp 	if (gotd_imsg_compose_event(&listen_proc->iev,
 368 d93ecf7d 2022-12-14 stsp 	    GOTD_IMSG_DISCONNECT, PROC_GOTD, -1,
 369 d93ecf7d 2022-12-14 stsp 	    &idisconnect, sizeof(idisconnect)) == -1)
 370 d93ecf7d 2022-12-14 stsp 		log_warn("imsg compose DISCONNECT");
 371 d93ecf7d 2022-12-14 stsp 
 372 13b2bc37 2022-10-23 stsp 	slot = client_hash(client->id) % nitems(gotd_clients);
 373 13b2bc37 2022-10-23 stsp 	STAILQ_REMOVE(&gotd_clients[slot], client, gotd_client, entry);
 374 13b2bc37 2022-10-23 stsp 	imsg_clear(&client->iev.ibuf);
 375 13b2bc37 2022-10-23 stsp 	event_del(&client->iev.ev);
 376 13b2bc37 2022-10-23 stsp 	evtimer_del(&client->tmo);
 377 13b2bc37 2022-10-23 stsp 	close(client->fd);
 378 13b2bc37 2022-10-23 stsp 	if (client->delta_cache_fd != -1)
 379 13b2bc37 2022-10-23 stsp 		close(client->delta_cache_fd);
 380 13b2bc37 2022-10-23 stsp 	if (client->packfile_path) {
 381 13b2bc37 2022-10-23 stsp 		if (unlink(client->packfile_path) == -1 && errno != ENOENT)
 382 13b2bc37 2022-10-23 stsp 			log_warn("unlink %s: ", client->packfile_path);
 383 13b2bc37 2022-10-23 stsp 		free(client->packfile_path);
 384 13b2bc37 2022-10-23 stsp 	}
 385 13b2bc37 2022-10-23 stsp 	if (client->packidx_path) {
 386 13b2bc37 2022-10-23 stsp 		if (unlink(client->packidx_path) == -1 && errno != ENOENT)
 387 13b2bc37 2022-10-23 stsp 			log_warn("unlink %s: ", client->packidx_path);
 388 13b2bc37 2022-10-23 stsp 		free(client->packidx_path);
 389 13b2bc37 2022-10-23 stsp 	}
 390 13b2bc37 2022-10-23 stsp 	free(client->capabilities);
 391 13b2bc37 2022-10-23 stsp 	free(client);
 392 13b2bc37 2022-10-23 stsp 	client_cnt--;
 393 13b2bc37 2022-10-23 stsp }
 394 13b2bc37 2022-10-23 stsp 
 395 13b2bc37 2022-10-23 stsp static void
 396 13b2bc37 2022-10-23 stsp disconnect_on_error(struct gotd_client *client, const struct got_error *err)
 397 13b2bc37 2022-10-23 stsp {
 398 13b2bc37 2022-10-23 stsp 	struct imsgbuf ibuf;
 399 13b2bc37 2022-10-23 stsp 
 400 13b2bc37 2022-10-23 stsp 	log_warnx("uid %d: %s", client->euid, err->msg);
 401 13b2bc37 2022-10-23 stsp 	if (err->code != GOT_ERR_EOF) {
 402 13b2bc37 2022-10-23 stsp 		imsg_init(&ibuf, client->fd);
 403 13b2bc37 2022-10-23 stsp 		gotd_imsg_send_error(&ibuf, 0, PROC_GOTD, err);
 404 13b2bc37 2022-10-23 stsp 		imsg_clear(&ibuf);
 405 13b2bc37 2022-10-23 stsp 	}
 406 13b2bc37 2022-10-23 stsp 	disconnect(client);
 407 f1752522 2022-10-29 stsp }
 408 f1752522 2022-10-29 stsp 
 409 f1752522 2022-10-29 stsp static const struct got_error *
 410 f1752522 2022-10-29 stsp send_repo_info(struct gotd_imsgev *iev, struct gotd_repo *repo)
 411 f1752522 2022-10-29 stsp {
 412 f1752522 2022-10-29 stsp 	const struct got_error *err = NULL;
 413 f1752522 2022-10-29 stsp 	struct gotd_imsg_info_repo irepo;
 414 f1752522 2022-10-29 stsp 
 415 f1752522 2022-10-29 stsp 	memset(&irepo, 0, sizeof(irepo));
 416 f1752522 2022-10-29 stsp 
 417 f1752522 2022-10-29 stsp 	if (strlcpy(irepo.repo_name, repo->name, sizeof(irepo.repo_name))
 418 f1752522 2022-10-29 stsp 	    >= sizeof(irepo.repo_name))
 419 f1752522 2022-10-29 stsp 		return got_error_msg(GOT_ERR_NO_SPACE, "repo name too long");
 420 f1752522 2022-10-29 stsp 	if (strlcpy(irepo.repo_path, repo->path, sizeof(irepo.repo_path))
 421 f1752522 2022-10-29 stsp 	    >= sizeof(irepo.repo_path))
 422 f1752522 2022-10-29 stsp 		return got_error_msg(GOT_ERR_NO_SPACE, "repo path too long");
 423 f1752522 2022-10-29 stsp 
 424 f1752522 2022-10-29 stsp 	if (gotd_imsg_compose_event(iev, GOTD_IMSG_INFO_REPO, PROC_GOTD, -1,
 425 f1752522 2022-10-29 stsp 	    &irepo, sizeof(irepo)) == -1) {
 426 f1752522 2022-10-29 stsp 		err = got_error_from_errno("imsg compose INFO_REPO");
 427 f1752522 2022-10-29 stsp 		if (err)
 428 f1752522 2022-10-29 stsp 			return err;
 429 f1752522 2022-10-29 stsp 	}
 430 f1752522 2022-10-29 stsp 
 431 f1752522 2022-10-29 stsp 	return NULL;
 432 13b2bc37 2022-10-23 stsp }
 433 13b2bc37 2022-10-23 stsp 
 434 f1752522 2022-10-29 stsp static const struct got_error *
 435 f1752522 2022-10-29 stsp send_capability(struct gotd_client_capability *capa, struct gotd_imsgev* iev)
 436 f1752522 2022-10-29 stsp {
 437 f1752522 2022-10-29 stsp 	const struct got_error *err = NULL;
 438 f1752522 2022-10-29 stsp 	struct gotd_imsg_capability icapa;
 439 f1752522 2022-10-29 stsp 	size_t len;
 440 f1752522 2022-10-29 stsp 	struct ibuf *wbuf;
 441 f1752522 2022-10-29 stsp 
 442 f1752522 2022-10-29 stsp 	memset(&icapa, 0, sizeof(icapa));
 443 f1752522 2022-10-29 stsp 
 444 f1752522 2022-10-29 stsp 	icapa.key_len = strlen(capa->key);
 445 f1752522 2022-10-29 stsp 	len = sizeof(icapa) + icapa.key_len;
 446 f1752522 2022-10-29 stsp 	if (capa->value) {
 447 f1752522 2022-10-29 stsp 		icapa.value_len = strlen(capa->value);
 448 f1752522 2022-10-29 stsp 		len += icapa.value_len;
 449 f1752522 2022-10-29 stsp 	}
 450 f1752522 2022-10-29 stsp 
 451 f1752522 2022-10-29 stsp 	wbuf = imsg_create(&iev->ibuf, GOTD_IMSG_CAPABILITY, 0, 0, len);
 452 f1752522 2022-10-29 stsp 	if (wbuf == NULL) {
 453 f1752522 2022-10-29 stsp 		err = got_error_from_errno("imsg_create CAPABILITY");
 454 f1752522 2022-10-29 stsp 		return err;
 455 f1752522 2022-10-29 stsp 	}
 456 f1752522 2022-10-29 stsp 
 457 f1752522 2022-10-29 stsp 	if (imsg_add(wbuf, &icapa, sizeof(icapa)) == -1)
 458 f1752522 2022-10-29 stsp 		return got_error_from_errno("imsg_add CAPABILITY");
 459 f1752522 2022-10-29 stsp 	if (imsg_add(wbuf, capa->key, icapa.key_len) == -1)
 460 f1752522 2022-10-29 stsp 		return got_error_from_errno("imsg_add CAPABILITY");
 461 f1752522 2022-10-29 stsp 	if (capa->value) {
 462 f1752522 2022-10-29 stsp 		if (imsg_add(wbuf, capa->value, icapa.value_len) == -1)
 463 f1752522 2022-10-29 stsp 			return got_error_from_errno("imsg_add CAPABILITY");
 464 f1752522 2022-10-29 stsp 	}
 465 f1752522 2022-10-29 stsp 
 466 f1752522 2022-10-29 stsp 	wbuf->fd = -1;
 467 f1752522 2022-10-29 stsp 	imsg_close(&iev->ibuf, wbuf);
 468 f1752522 2022-10-29 stsp 
 469 f1752522 2022-10-29 stsp 	gotd_imsg_event_add(iev);
 470 f1752522 2022-10-29 stsp 
 471 f1752522 2022-10-29 stsp 	return NULL;
 472 f1752522 2022-10-29 stsp }
 473 f1752522 2022-10-29 stsp 
 474 f1752522 2022-10-29 stsp static const struct got_error *
 475 f1752522 2022-10-29 stsp send_client_info(struct gotd_imsgev *iev, struct gotd_client *client)
 476 f1752522 2022-10-29 stsp {
 477 f1752522 2022-10-29 stsp 	const struct got_error *err = NULL;
 478 f1752522 2022-10-29 stsp 	struct gotd_imsg_info_client iclient;
 479 f1752522 2022-10-29 stsp 	struct gotd_child_proc *proc;
 480 f1752522 2022-10-29 stsp 	size_t i;
 481 f1752522 2022-10-29 stsp 
 482 f1752522 2022-10-29 stsp 	memset(&iclient, 0, sizeof(iclient));
 483 f1752522 2022-10-29 stsp 	iclient.euid = client->euid;
 484 f1752522 2022-10-29 stsp 	iclient.egid = client->egid;
 485 f1752522 2022-10-29 stsp 
 486 f1752522 2022-10-29 stsp 	proc = get_client_proc(client);
 487 f1752522 2022-10-29 stsp 	if (proc) {
 488 eec68231 2022-12-14 stsp 		if (strlcpy(iclient.repo_name, proc->repo_path,
 489 f1752522 2022-10-29 stsp 		    sizeof(iclient.repo_name)) >= sizeof(iclient.repo_name)) {
 490 f1752522 2022-10-29 stsp 			return got_error_msg(GOT_ERR_NO_SPACE,
 491 f1752522 2022-10-29 stsp 			    "repo name too long");
 492 f1752522 2022-10-29 stsp 		}
 493 f1752522 2022-10-29 stsp 		if (client_is_writing(client))
 494 f1752522 2022-10-29 stsp 			iclient.is_writing = 1;
 495 f1752522 2022-10-29 stsp 	}
 496 f1752522 2022-10-29 stsp 
 497 f1752522 2022-10-29 stsp 	iclient.state = client->state;
 498 f1752522 2022-10-29 stsp 	iclient.ncapabilities = client->ncapabilities;
 499 f1752522 2022-10-29 stsp 
 500 f1752522 2022-10-29 stsp 	if (gotd_imsg_compose_event(iev, GOTD_IMSG_INFO_CLIENT, PROC_GOTD, -1,
 501 f1752522 2022-10-29 stsp 	    &iclient, sizeof(iclient)) == -1) {
 502 f1752522 2022-10-29 stsp 		err = got_error_from_errno("imsg compose INFO_CLIENT");
 503 f1752522 2022-10-29 stsp 		if (err)
 504 f1752522 2022-10-29 stsp 			return err;
 505 f1752522 2022-10-29 stsp 	}
 506 f1752522 2022-10-29 stsp 
 507 f1752522 2022-10-29 stsp 	for (i = 0; i < client->ncapabilities; i++) {
 508 f1752522 2022-10-29 stsp 		struct gotd_client_capability *capa;
 509 f1752522 2022-10-29 stsp 		capa = &client->capabilities[i];
 510 f1752522 2022-10-29 stsp 		err = send_capability(capa, iev);
 511 f1752522 2022-10-29 stsp 		if (err)
 512 f1752522 2022-10-29 stsp 			return err;
 513 f1752522 2022-10-29 stsp 	}
 514 f1752522 2022-10-29 stsp 
 515 f1752522 2022-10-29 stsp 	return NULL;
 516 f1752522 2022-10-29 stsp }
 517 f1752522 2022-10-29 stsp 
 518 f1752522 2022-10-29 stsp static const struct got_error *
 519 f1752522 2022-10-29 stsp send_info(struct gotd_client *client)
 520 f1752522 2022-10-29 stsp {
 521 f1752522 2022-10-29 stsp 	const struct got_error *err = NULL;
 522 f1752522 2022-10-29 stsp 	struct gotd_imsg_info info;
 523 f1752522 2022-10-29 stsp 	uint64_t slot;
 524 f1752522 2022-10-29 stsp 	struct gotd_repo *repo;
 525 f1752522 2022-10-29 stsp 
 526 f1752522 2022-10-29 stsp 	info.pid = gotd.pid;
 527 f1752522 2022-10-29 stsp 	info.verbosity = gotd.verbosity;
 528 f1752522 2022-10-29 stsp 	info.nrepos = gotd.nrepos;
 529 f1752522 2022-10-29 stsp 	info.nclients = client_cnt - 1;
 530 f1752522 2022-10-29 stsp 
 531 f1752522 2022-10-29 stsp 	if (gotd_imsg_compose_event(&client->iev, GOTD_IMSG_INFO, PROC_GOTD, -1,
 532 f1752522 2022-10-29 stsp 	    &info, sizeof(info)) == -1) {
 533 f1752522 2022-10-29 stsp 		err = got_error_from_errno("imsg compose INFO");
 534 f1752522 2022-10-29 stsp 		if (err)
 535 f1752522 2022-10-29 stsp 			return err;
 536 f1752522 2022-10-29 stsp 	}
 537 f1752522 2022-10-29 stsp 
 538 f1752522 2022-10-29 stsp 	TAILQ_FOREACH(repo, &gotd.repos, entry) {
 539 f1752522 2022-10-29 stsp 		err = send_repo_info(&client->iev, repo);
 540 f1752522 2022-10-29 stsp 		if (err)
 541 f1752522 2022-10-29 stsp 			return err;
 542 f1752522 2022-10-29 stsp 	}
 543 f1752522 2022-10-29 stsp 
 544 f1752522 2022-10-29 stsp 	for (slot = 0; slot < nitems(gotd_clients); slot++) {
 545 f1752522 2022-10-29 stsp 		struct gotd_client *c;
 546 f1752522 2022-10-29 stsp 		STAILQ_FOREACH(c, &gotd_clients[slot], entry) {
 547 f1752522 2022-10-29 stsp 			if (c->id == client->id)
 548 f1752522 2022-10-29 stsp 				continue;
 549 f1752522 2022-10-29 stsp 			err = send_client_info(&client->iev, c);
 550 f1752522 2022-10-29 stsp 			if (err)
 551 f1752522 2022-10-29 stsp 				return err;
 552 f1752522 2022-10-29 stsp 		}
 553 f1752522 2022-10-29 stsp 	}
 554 f1752522 2022-10-29 stsp 
 555 f1752522 2022-10-29 stsp 	return NULL;
 556 f1752522 2022-10-29 stsp }
 557 f1752522 2022-10-29 stsp 
 558 f1752522 2022-10-29 stsp static const struct got_error *
 559 f1752522 2022-10-29 stsp stop_gotd(struct gotd_client *client)
 560 f1752522 2022-10-29 stsp {
 561 f1752522 2022-10-29 stsp 
 562 f1752522 2022-10-29 stsp 	if (client->euid != 0)
 563 f1752522 2022-10-29 stsp 		return got_error_set_errno(EPERM, "stop");
 564 f1752522 2022-10-29 stsp 
 565 f1752522 2022-10-29 stsp 	gotd_shutdown();
 566 f1752522 2022-10-29 stsp 	/* NOTREACHED */
 567 0ccf3acb 2022-11-16 stsp 	return NULL;
 568 0ccf3acb 2022-11-16 stsp }
 569 0ccf3acb 2022-11-16 stsp 
 570 0ccf3acb 2022-11-16 stsp static struct gotd_repo *
 571 0ccf3acb 2022-11-16 stsp find_repo_by_name(const char *repo_name)
 572 0ccf3acb 2022-11-16 stsp {
 573 0ccf3acb 2022-11-16 stsp 	struct gotd_repo *repo;
 574 0ccf3acb 2022-11-16 stsp 	size_t namelen;
 575 0ccf3acb 2022-11-16 stsp 
 576 0ccf3acb 2022-11-16 stsp 	TAILQ_FOREACH(repo, &gotd.repos, entry) {
 577 0ccf3acb 2022-11-16 stsp 		namelen = strlen(repo->name);
 578 0ccf3acb 2022-11-16 stsp 		if (strncmp(repo->name, repo_name, namelen) != 0)
 579 0ccf3acb 2022-11-16 stsp 			continue;
 580 0ccf3acb 2022-11-16 stsp 		if (repo_name[namelen] == '\0' ||
 581 0ccf3acb 2022-11-16 stsp 		    strcmp(&repo_name[namelen], ".git") == 0)
 582 0ccf3acb 2022-11-16 stsp 			return repo;
 583 13b2bc37 2022-10-23 stsp 	}
 584 13b2bc37 2022-10-23 stsp 
 585 13b2bc37 2022-10-23 stsp 	return NULL;
 586 13b2bc37 2022-10-23 stsp }
 587 13b2bc37 2022-10-23 stsp 
 588 13b2bc37 2022-10-23 stsp static const struct got_error *
 589 b50a2b46 2022-12-29 stsp start_client_session(struct gotd_client *client, struct imsg *imsg)
 590 13b2bc37 2022-10-23 stsp {
 591 13b2bc37 2022-10-23 stsp 	const struct got_error *err;
 592 13b2bc37 2022-10-23 stsp 	struct gotd_imsg_list_refs ireq;
 593 0ccf3acb 2022-11-16 stsp 	struct gotd_repo *repo = NULL;
 594 13b2bc37 2022-10-23 stsp 	size_t datalen;
 595 13b2bc37 2022-10-23 stsp 
 596 13b2bc37 2022-10-23 stsp 	log_debug("list-refs request from uid %d", client->euid);
 597 13b2bc37 2022-10-23 stsp 
 598 13b2bc37 2022-10-23 stsp 	datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
 599 13b2bc37 2022-10-23 stsp 	if (datalen != sizeof(ireq))
 600 13b2bc37 2022-10-23 stsp 		return got_error(GOT_ERR_PRIVSEP_LEN);
 601 13b2bc37 2022-10-23 stsp 
 602 13b2bc37 2022-10-23 stsp 	memcpy(&ireq, imsg->data, datalen);
 603 13b2bc37 2022-10-23 stsp 
 604 13b2bc37 2022-10-23 stsp 	if (ireq.client_is_reading) {
 605 13b2bc37 2022-10-23 stsp 		err = ensure_client_is_not_writing(client);
 606 13b2bc37 2022-10-23 stsp 		if (err)
 607 13b2bc37 2022-10-23 stsp 			return err;
 608 0ccf3acb 2022-11-16 stsp 		repo = find_repo_by_name(ireq.repo_name);
 609 0ccf3acb 2022-11-16 stsp 		if (repo == NULL)
 610 0ccf3acb 2022-11-16 stsp 			return got_error(GOT_ERR_NOT_GIT_REPO);
 611 0ccf3acb 2022-11-16 stsp 		err = gotd_auth_check(&repo->rules, repo->name,
 612 ddbe612c 2022-11-17 stsp 		    client->euid, client->egid, GOTD_AUTH_READ);
 613 0ccf3acb 2022-11-16 stsp 		if (err)
 614 0ccf3acb 2022-11-16 stsp 			return err;
 615 b50a2b46 2022-12-29 stsp 		err = start_repo_child(client, PROC_REPO_READ, repo,
 616 b50a2b46 2022-12-29 stsp 		    gotd.argv0, gotd.confpath, gotd.daemonize,
 617 b50a2b46 2022-12-29 stsp 		    gotd.verbosity);
 618 b50a2b46 2022-12-29 stsp 		if (err)
 619 b50a2b46 2022-12-29 stsp 			return err;
 620 13b2bc37 2022-10-23 stsp 	} else {
 621 13b2bc37 2022-10-23 stsp 		err = ensure_client_is_not_reading(client);
 622 0ccf3acb 2022-11-16 stsp 		if (err)
 623 0ccf3acb 2022-11-16 stsp 			return err;
 624 0ccf3acb 2022-11-16 stsp 		repo = find_repo_by_name(ireq.repo_name);
 625 0ccf3acb 2022-11-16 stsp 		if (repo == NULL)
 626 0ccf3acb 2022-11-16 stsp 			return got_error(GOT_ERR_NOT_GIT_REPO);
 627 ddbe612c 2022-11-17 stsp 		err = gotd_auth_check(&repo->rules, repo->name, client->euid,
 628 ddbe612c 2022-11-17 stsp 		    client->egid, GOTD_AUTH_READ | GOTD_AUTH_WRITE);
 629 13b2bc37 2022-10-23 stsp 		if (err)
 630 13b2bc37 2022-10-23 stsp 			return err;
 631 b50a2b46 2022-12-29 stsp 		err = start_repo_child(client, PROC_REPO_WRITE, repo,
 632 b50a2b46 2022-12-29 stsp 		    gotd.argv0, gotd.confpath, gotd.daemonize,
 633 b50a2b46 2022-12-29 stsp 		    gotd.verbosity);
 634 b50a2b46 2022-12-29 stsp 		if (err)
 635 b50a2b46 2022-12-29 stsp 			return err;
 636 13b2bc37 2022-10-23 stsp 	}
 637 13b2bc37 2022-10-23 stsp 
 638 b50a2b46 2022-12-29 stsp 	/* List-refs request will be forwarded once the child is ready. */
 639 13b2bc37 2022-10-23 stsp 	return NULL;
 640 13b2bc37 2022-10-23 stsp }
 641 13b2bc37 2022-10-23 stsp 
 642 13b2bc37 2022-10-23 stsp static const struct got_error *
 643 13b2bc37 2022-10-23 stsp forward_want(struct gotd_client *client, struct imsg *imsg)
 644 13b2bc37 2022-10-23 stsp {
 645 13b2bc37 2022-10-23 stsp 	struct gotd_imsg_want ireq;
 646 13b2bc37 2022-10-23 stsp 	struct gotd_imsg_want iwant;
 647 13b2bc37 2022-10-23 stsp 	size_t datalen;
 648 13b2bc37 2022-10-23 stsp 
 649 13b2bc37 2022-10-23 stsp 	datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
 650 13b2bc37 2022-10-23 stsp 	if (datalen != sizeof(ireq))
 651 13b2bc37 2022-10-23 stsp 		return got_error(GOT_ERR_PRIVSEP_LEN);
 652 13b2bc37 2022-10-23 stsp 
 653 13b2bc37 2022-10-23 stsp 	memcpy(&ireq, imsg->data, datalen);
 654 13b2bc37 2022-10-23 stsp 
 655 13b2bc37 2022-10-23 stsp 	memset(&iwant, 0, sizeof(iwant));
 656 13b2bc37 2022-10-23 stsp 	memcpy(iwant.object_id, ireq.object_id, SHA1_DIGEST_LENGTH);
 657 13b2bc37 2022-10-23 stsp 	iwant.client_id = client->id;
 658 13b2bc37 2022-10-23 stsp 
 659 13b2bc37 2022-10-23 stsp 	if (gotd_imsg_compose_event(&client->repo_read->iev, GOTD_IMSG_WANT,
 660 13b2bc37 2022-10-23 stsp 	    PROC_GOTD, -1, &iwant, sizeof(iwant)) == -1)
 661 13b2bc37 2022-10-23 stsp 		return got_error_from_errno("imsg compose WANT");
 662 13b2bc37 2022-10-23 stsp 
 663 13b2bc37 2022-10-23 stsp 	return NULL;
 664 13b2bc37 2022-10-23 stsp }
 665 13b2bc37 2022-10-23 stsp 
 666 13b2bc37 2022-10-23 stsp static const struct got_error *
 667 13b2bc37 2022-10-23 stsp forward_ref_update(struct gotd_client *client, struct imsg *imsg)
 668 13b2bc37 2022-10-23 stsp {
 669 13b2bc37 2022-10-23 stsp 	const struct got_error *err = NULL;
 670 13b2bc37 2022-10-23 stsp 	struct gotd_imsg_ref_update ireq;
 671 13b2bc37 2022-10-23 stsp 	struct gotd_imsg_ref_update *iref = NULL;
 672 13b2bc37 2022-10-23 stsp 	size_t datalen;
 673 13b2bc37 2022-10-23 stsp 
 674 13b2bc37 2022-10-23 stsp 	datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
 675 13b2bc37 2022-10-23 stsp 	if (datalen < sizeof(ireq))
 676 13b2bc37 2022-10-23 stsp 		return got_error(GOT_ERR_PRIVSEP_LEN);
 677 13b2bc37 2022-10-23 stsp 	memcpy(&ireq, imsg->data, sizeof(ireq));
 678 13b2bc37 2022-10-23 stsp 	if (datalen != sizeof(ireq) + ireq.name_len)
 679 13b2bc37 2022-10-23 stsp 		return got_error(GOT_ERR_PRIVSEP_LEN);
 680 13b2bc37 2022-10-23 stsp 
 681 13b2bc37 2022-10-23 stsp 	iref = malloc(datalen);
 682 13b2bc37 2022-10-23 stsp 	if (iref == NULL)
 683 13b2bc37 2022-10-23 stsp 		return got_error_from_errno("malloc");
 684 13b2bc37 2022-10-23 stsp 	memcpy(iref, imsg->data, datalen);
 685 13b2bc37 2022-10-23 stsp 
 686 13b2bc37 2022-10-23 stsp 	iref->client_id = client->id;
 687 13b2bc37 2022-10-23 stsp 	if (gotd_imsg_compose_event(&client->repo_write->iev,
 688 13b2bc37 2022-10-23 stsp 	    GOTD_IMSG_REF_UPDATE, PROC_GOTD, -1, iref, datalen) == -1)
 689 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("imsg compose REF_UPDATE");
 690 13b2bc37 2022-10-23 stsp 	free(iref);
 691 13b2bc37 2022-10-23 stsp 	return err;
 692 13b2bc37 2022-10-23 stsp }
 693 13b2bc37 2022-10-23 stsp 
 694 13b2bc37 2022-10-23 stsp static const struct got_error *
 695 13b2bc37 2022-10-23 stsp forward_have(struct gotd_client *client, struct imsg *imsg)
 696 13b2bc37 2022-10-23 stsp {
 697 13b2bc37 2022-10-23 stsp 	struct gotd_imsg_have ireq;
 698 13b2bc37 2022-10-23 stsp 	struct gotd_imsg_have ihave;
 699 13b2bc37 2022-10-23 stsp 	size_t datalen;
 700 13b2bc37 2022-10-23 stsp 
 701 13b2bc37 2022-10-23 stsp 	datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
 702 13b2bc37 2022-10-23 stsp 	if (datalen != sizeof(ireq))
 703 13b2bc37 2022-10-23 stsp 		return got_error(GOT_ERR_PRIVSEP_LEN);
 704 13b2bc37 2022-10-23 stsp 
 705 13b2bc37 2022-10-23 stsp 	memcpy(&ireq, imsg->data, datalen);
 706 13b2bc37 2022-10-23 stsp 
 707 13b2bc37 2022-10-23 stsp 	memset(&ihave, 0, sizeof(ihave));
 708 13b2bc37 2022-10-23 stsp 	memcpy(ihave.object_id, ireq.object_id, SHA1_DIGEST_LENGTH);
 709 13b2bc37 2022-10-23 stsp 	ihave.client_id = client->id;
 710 13b2bc37 2022-10-23 stsp 
 711 13b2bc37 2022-10-23 stsp 	if (gotd_imsg_compose_event(&client->repo_read->iev, GOTD_IMSG_HAVE,
 712 13b2bc37 2022-10-23 stsp 	    PROC_GOTD, -1, &ihave, sizeof(ihave)) == -1)
 713 13b2bc37 2022-10-23 stsp 		return got_error_from_errno("imsg compose HAVE");
 714 13b2bc37 2022-10-23 stsp 
 715 13b2bc37 2022-10-23 stsp 	return NULL;
 716 13b2bc37 2022-10-23 stsp }
 717 13b2bc37 2022-10-23 stsp 
 718 13b2bc37 2022-10-23 stsp static int
 719 13b2bc37 2022-10-23 stsp client_has_capability(struct gotd_client *client, const char *capastr)
 720 13b2bc37 2022-10-23 stsp {
 721 13b2bc37 2022-10-23 stsp 	struct gotd_client_capability *capa;
 722 13b2bc37 2022-10-23 stsp 	size_t i;
 723 13b2bc37 2022-10-23 stsp 
 724 13b2bc37 2022-10-23 stsp 	if (client->ncapabilities == 0)
 725 13b2bc37 2022-10-23 stsp 		return 0;
 726 13b2bc37 2022-10-23 stsp 
 727 13b2bc37 2022-10-23 stsp 	for (i = 0; i < client->ncapabilities; i++) {
 728 13b2bc37 2022-10-23 stsp 		capa = &client->capabilities[i];
 729 13b2bc37 2022-10-23 stsp 		if (strcmp(capa->key, capastr) == 0)
 730 13b2bc37 2022-10-23 stsp 			return 1;
 731 13b2bc37 2022-10-23 stsp 	}
 732 13b2bc37 2022-10-23 stsp 
 733 13b2bc37 2022-10-23 stsp 	return 0;
 734 13b2bc37 2022-10-23 stsp }
 735 13b2bc37 2022-10-23 stsp 
 736 13b2bc37 2022-10-23 stsp static const struct got_error *
 737 13b2bc37 2022-10-23 stsp recv_capabilities(struct gotd_client *client, struct imsg *imsg)
 738 13b2bc37 2022-10-23 stsp {
 739 13b2bc37 2022-10-23 stsp 	struct gotd_imsg_capabilities icapas;
 740 13b2bc37 2022-10-23 stsp 	size_t datalen;
 741 13b2bc37 2022-10-23 stsp 
 742 13b2bc37 2022-10-23 stsp 	datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
 743 13b2bc37 2022-10-23 stsp 	if (datalen != sizeof(icapas))
 744 13b2bc37 2022-10-23 stsp 		return got_error(GOT_ERR_PRIVSEP_LEN);
 745 13b2bc37 2022-10-23 stsp 	memcpy(&icapas, imsg->data, sizeof(icapas));
 746 13b2bc37 2022-10-23 stsp 
 747 13b2bc37 2022-10-23 stsp 	client->ncapa_alloc = icapas.ncapabilities;
 748 13b2bc37 2022-10-23 stsp 	client->capabilities = calloc(client->ncapa_alloc,
 749 13b2bc37 2022-10-23 stsp 	    sizeof(*client->capabilities));
 750 13b2bc37 2022-10-23 stsp 	if (client->capabilities == NULL) {
 751 13b2bc37 2022-10-23 stsp 		client->ncapa_alloc = 0;
 752 13b2bc37 2022-10-23 stsp 		return got_error_from_errno("calloc");
 753 13b2bc37 2022-10-23 stsp 	}
 754 13b2bc37 2022-10-23 stsp 
 755 13b2bc37 2022-10-23 stsp 	log_debug("expecting %zu capabilities from uid %d",
 756 13b2bc37 2022-10-23 stsp 	    client->ncapa_alloc, client->euid);
 757 13b2bc37 2022-10-23 stsp 	return NULL;
 758 13b2bc37 2022-10-23 stsp }
 759 13b2bc37 2022-10-23 stsp 
 760 13b2bc37 2022-10-23 stsp static const struct got_error *
 761 13b2bc37 2022-10-23 stsp recv_capability(struct gotd_client *client, struct imsg *imsg)
 762 13b2bc37 2022-10-23 stsp {
 763 13b2bc37 2022-10-23 stsp 	struct gotd_imsg_capability icapa;
 764 13b2bc37 2022-10-23 stsp 	struct gotd_client_capability *capa;
 765 13b2bc37 2022-10-23 stsp 	size_t datalen;
 766 13b2bc37 2022-10-23 stsp 	char *key, *value = NULL;
 767 13b2bc37 2022-10-23 stsp 
 768 13b2bc37 2022-10-23 stsp 	if (client->capabilities == NULL ||
 769 13b2bc37 2022-10-23 stsp 	    client->ncapabilities >= client->ncapa_alloc) {
 770 13b2bc37 2022-10-23 stsp 		return got_error_msg(GOT_ERR_BAD_REQUEST,
 771 13b2bc37 2022-10-23 stsp 		    "unexpected capability received");
 772 13b2bc37 2022-10-23 stsp 	}
 773 13b2bc37 2022-10-23 stsp 
 774 13b2bc37 2022-10-23 stsp 	memset(&icapa, 0, sizeof(icapa));
 775 13b2bc37 2022-10-23 stsp 
 776 13b2bc37 2022-10-23 stsp 	datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
 777 13b2bc37 2022-10-23 stsp 	if (datalen < sizeof(icapa))
 778 13b2bc37 2022-10-23 stsp 		return got_error(GOT_ERR_PRIVSEP_LEN);
 779 13b2bc37 2022-10-23 stsp 	memcpy(&icapa, imsg->data, sizeof(icapa));
 780 13b2bc37 2022-10-23 stsp 
 781 13b2bc37 2022-10-23 stsp 	if (datalen != sizeof(icapa) + icapa.key_len + icapa.value_len)
 782 13b2bc37 2022-10-23 stsp 		return got_error(GOT_ERR_PRIVSEP_LEN);
 783 13b2bc37 2022-10-23 stsp 
 784 13b2bc37 2022-10-23 stsp 	key = malloc(icapa.key_len + 1);
 785 13b2bc37 2022-10-23 stsp 	if (key == NULL)
 786 13b2bc37 2022-10-23 stsp 		return got_error_from_errno("malloc");
 787 13b2bc37 2022-10-23 stsp 	if (icapa.value_len > 0) {
 788 13b2bc37 2022-10-23 stsp 		value = malloc(icapa.value_len + 1);
 789 13b2bc37 2022-10-23 stsp 		if (value == NULL) {
 790 13b2bc37 2022-10-23 stsp 			free(key);
 791 13b2bc37 2022-10-23 stsp 			return got_error_from_errno("malloc");
 792 13b2bc37 2022-10-23 stsp 		}
 793 13b2bc37 2022-10-23 stsp 	}
 794 13b2bc37 2022-10-23 stsp 
 795 13b2bc37 2022-10-23 stsp 	memcpy(key, imsg->data + sizeof(icapa), icapa.key_len);
 796 13b2bc37 2022-10-23 stsp 	key[icapa.key_len] = '\0';
 797 13b2bc37 2022-10-23 stsp 	if (value) {
 798 13b2bc37 2022-10-23 stsp 		memcpy(value, imsg->data + sizeof(icapa) + icapa.key_len,
 799 13b2bc37 2022-10-23 stsp 		    icapa.value_len);
 800 13b2bc37 2022-10-23 stsp 		value[icapa.value_len] = '\0';
 801 13b2bc37 2022-10-23 stsp 	}
 802 13b2bc37 2022-10-23 stsp 
 803 13b2bc37 2022-10-23 stsp 	capa = &client->capabilities[client->ncapabilities++];
 804 13b2bc37 2022-10-23 stsp 	capa->key = key;
 805 13b2bc37 2022-10-23 stsp 	capa->value = value;
 806 13b2bc37 2022-10-23 stsp 
 807 13b2bc37 2022-10-23 stsp 	if (value)
 808 13b2bc37 2022-10-23 stsp 		log_debug("uid %d: capability %s=%s", client->euid, key, value);
 809 13b2bc37 2022-10-23 stsp 	else
 810 13b2bc37 2022-10-23 stsp 		log_debug("uid %d: capability %s", client->euid, key);
 811 13b2bc37 2022-10-23 stsp 
 812 13b2bc37 2022-10-23 stsp 	return NULL;
 813 13b2bc37 2022-10-23 stsp }
 814 13b2bc37 2022-10-23 stsp 
 815 13b2bc37 2022-10-23 stsp static const struct got_error *
 816 13b2bc37 2022-10-23 stsp send_packfile(struct gotd_client *client)
 817 13b2bc37 2022-10-23 stsp {
 818 13b2bc37 2022-10-23 stsp 	const struct got_error *err = NULL;
 819 13b2bc37 2022-10-23 stsp 	struct gotd_imsg_send_packfile ipack;
 820 13b2bc37 2022-10-23 stsp 	struct gotd_imsg_packfile_pipe ipipe;
 821 13b2bc37 2022-10-23 stsp 	int pipe[2];
 822 13b2bc37 2022-10-23 stsp 
 823 13b2bc37 2022-10-23 stsp 	if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, pipe) == -1)
 824 13b2bc37 2022-10-23 stsp 		return got_error_from_errno("socketpair");
 825 13b2bc37 2022-10-23 stsp 
 826 13b2bc37 2022-10-23 stsp 	memset(&ipack, 0, sizeof(ipack));
 827 13b2bc37 2022-10-23 stsp 	memset(&ipipe, 0, sizeof(ipipe));
 828 13b2bc37 2022-10-23 stsp 
 829 13b2bc37 2022-10-23 stsp 	ipack.client_id = client->id;
 830 13b2bc37 2022-10-23 stsp 	if (client_has_capability(client, GOT_CAPA_SIDE_BAND_64K))
 831 13b2bc37 2022-10-23 stsp 		ipack.report_progress = 1;
 832 13b2bc37 2022-10-23 stsp 
 833 13b2bc37 2022-10-23 stsp 	client->delta_cache_fd = got_opentempfd();
 834 13b2bc37 2022-10-23 stsp 	if (client->delta_cache_fd == -1)
 835 13b2bc37 2022-10-23 stsp 		return got_error_from_errno("got_opentempfd");
 836 13b2bc37 2022-10-23 stsp 
 837 13b2bc37 2022-10-23 stsp 	if (gotd_imsg_compose_event(&client->repo_read->iev,
 838 13b2bc37 2022-10-23 stsp 	    GOTD_IMSG_SEND_PACKFILE, PROC_GOTD, client->delta_cache_fd,
 839 13b2bc37 2022-10-23 stsp 	    &ipack, sizeof(ipack)) == -1) {
 840 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("imsg compose SEND_PACKFILE");
 841 13b2bc37 2022-10-23 stsp 		close(pipe[0]);
 842 13b2bc37 2022-10-23 stsp 		close(pipe[1]);
 843 13b2bc37 2022-10-23 stsp 		return err;
 844 13b2bc37 2022-10-23 stsp 	}
 845 13b2bc37 2022-10-23 stsp 
 846 13b2bc37 2022-10-23 stsp 	ipipe.client_id = client->id;
 847 13b2bc37 2022-10-23 stsp 
 848 86769de8 2022-10-28 stsp 	/* Send pack pipe end 0 to repo_read. */
 849 13b2bc37 2022-10-23 stsp 	if (gotd_imsg_compose_event(&client->repo_read->iev,
 850 13b2bc37 2022-10-23 stsp 	    GOTD_IMSG_PACKFILE_PIPE, PROC_GOTD, pipe[0],
 851 13b2bc37 2022-10-23 stsp 	        &ipipe, sizeof(ipipe)) == -1) {
 852 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("imsg compose PACKFILE_PIPE");
 853 13b2bc37 2022-10-23 stsp 		close(pipe[1]);
 854 13b2bc37 2022-10-23 stsp 		return err;
 855 13b2bc37 2022-10-23 stsp 	}
 856 13b2bc37 2022-10-23 stsp 
 857 86769de8 2022-10-28 stsp 	/* Send pack pipe end 1 to gotsh(1) (expects just an fd, no data). */
 858 86769de8 2022-10-28 stsp 	if (gotd_imsg_compose_event(&client->iev,
 859 86769de8 2022-10-28 stsp 	    GOTD_IMSG_PACKFILE_PIPE, PROC_GOTD, pipe[1], NULL, 0) == -1)
 860 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("imsg compose PACKFILE_PIPE");
 861 13b2bc37 2022-10-23 stsp 
 862 13b2bc37 2022-10-23 stsp 	return err;
 863 13b2bc37 2022-10-23 stsp }
 864 13b2bc37 2022-10-23 stsp 
 865 13b2bc37 2022-10-23 stsp static const struct got_error *
 866 13b2bc37 2022-10-23 stsp recv_packfile(struct gotd_client *client)
 867 13b2bc37 2022-10-23 stsp {
 868 13b2bc37 2022-10-23 stsp 	const struct got_error *err = NULL;
 869 13b2bc37 2022-10-23 stsp 	struct gotd_imsg_recv_packfile ipack;
 870 13b2bc37 2022-10-23 stsp 	struct gotd_imsg_packfile_pipe ipipe;
 871 13b2bc37 2022-10-23 stsp 	struct gotd_imsg_packidx_file ifile;
 872 13b2bc37 2022-10-23 stsp 	char *basepath = NULL, *pack_path = NULL, *idx_path = NULL;
 873 13b2bc37 2022-10-23 stsp 	int packfd = -1, idxfd = -1;
 874 13b2bc37 2022-10-23 stsp 	int pipe[2] = { -1, -1 };
 875 13b2bc37 2022-10-23 stsp 
 876 13b2bc37 2022-10-23 stsp 	if (client->packfile_path) {
 877 13b2bc37 2022-10-23 stsp 		return got_error_fmt(GOT_ERR_PRIVSEP_MSG,
 878 13b2bc37 2022-10-23 stsp 		    "uid %d already has a pack file", client->euid);
 879 13b2bc37 2022-10-23 stsp 	}
 880 13b2bc37 2022-10-23 stsp 
 881 13b2bc37 2022-10-23 stsp 	if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, pipe) == -1)
 882 13b2bc37 2022-10-23 stsp 		return got_error_from_errno("socketpair");
 883 13b2bc37 2022-10-23 stsp 
 884 13b2bc37 2022-10-23 stsp 	memset(&ipipe, 0, sizeof(ipipe));
 885 13b2bc37 2022-10-23 stsp 	ipipe.client_id = client->id;
 886 13b2bc37 2022-10-23 stsp 
 887 7fec5f4a 2022-10-28 stsp 	/* Send pack pipe end 0 to repo_write. */
 888 13b2bc37 2022-10-23 stsp 	if (gotd_imsg_compose_event(&client->repo_write->iev,
 889 13b2bc37 2022-10-23 stsp 	    GOTD_IMSG_PACKFILE_PIPE, PROC_GOTD, pipe[0],
 890 13b2bc37 2022-10-23 stsp 	        &ipipe, sizeof(ipipe)) == -1) {
 891 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("imsg compose PACKFILE_PIPE");
 892 13b2bc37 2022-10-23 stsp 		pipe[0] = -1;
 893 13b2bc37 2022-10-23 stsp 		goto done;
 894 13b2bc37 2022-10-23 stsp 	}
 895 13b2bc37 2022-10-23 stsp 	pipe[0] = -1;
 896 13b2bc37 2022-10-23 stsp 
 897 7fec5f4a 2022-10-28 stsp 	/* Send pack pipe end 1 to gotsh(1) (expects just an fd, no data). */
 898 7fec5f4a 2022-10-28 stsp 	if (gotd_imsg_compose_event(&client->iev,
 899 7fec5f4a 2022-10-28 stsp 	    GOTD_IMSG_PACKFILE_PIPE, PROC_GOTD, pipe[1], NULL, 0) == -1)
 900 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("imsg compose PACKFILE_PIPE");
 901 13b2bc37 2022-10-23 stsp 	pipe[1] = -1;
 902 13b2bc37 2022-10-23 stsp 
 903 13b2bc37 2022-10-23 stsp 	if (asprintf(&basepath, "%s/%s/receiving-from-uid-%d.pack",
 904 eec68231 2022-12-14 stsp 	    client->repo_write->repo_path, GOT_OBJECTS_PACK_DIR,
 905 13b2bc37 2022-10-23 stsp 	    client->euid) == -1) {
 906 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("asprintf");
 907 13b2bc37 2022-10-23 stsp 		goto done;
 908 13b2bc37 2022-10-23 stsp 	}
 909 13b2bc37 2022-10-23 stsp 
 910 b90054ed 2022-11-01 stsp 	err = got_opentemp_named_fd(&pack_path, &packfd, basepath, "");
 911 13b2bc37 2022-10-23 stsp 	if (err)
 912 13b2bc37 2022-10-23 stsp 		goto done;
 913 13b2bc37 2022-10-23 stsp 
 914 13b2bc37 2022-10-23 stsp 	free(basepath);
 915 13b2bc37 2022-10-23 stsp 	if (asprintf(&basepath, "%s/%s/receiving-from-uid-%d.idx",
 916 eec68231 2022-12-14 stsp 	    client->repo_write->repo_path, GOT_OBJECTS_PACK_DIR,
 917 13b2bc37 2022-10-23 stsp 	    client->euid) == -1) {
 918 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("asprintf");
 919 13b2bc37 2022-10-23 stsp 		basepath = NULL;
 920 13b2bc37 2022-10-23 stsp 		goto done;
 921 13b2bc37 2022-10-23 stsp 	}
 922 b90054ed 2022-11-01 stsp 	err = got_opentemp_named_fd(&idx_path, &idxfd, basepath, "");
 923 13b2bc37 2022-10-23 stsp 	if (err)
 924 13b2bc37 2022-10-23 stsp 		goto done;
 925 13b2bc37 2022-10-23 stsp 
 926 13b2bc37 2022-10-23 stsp 	memset(&ifile, 0, sizeof(ifile));
 927 13b2bc37 2022-10-23 stsp 	ifile.client_id = client->id;
 928 13b2bc37 2022-10-23 stsp 	if (gotd_imsg_compose_event(&client->repo_write->iev,
 929 13b2bc37 2022-10-23 stsp 	    GOTD_IMSG_PACKIDX_FILE, PROC_GOTD, idxfd,
 930 13b2bc37 2022-10-23 stsp 	    &ifile, sizeof(ifile)) == -1) {
 931 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("imsg compose PACKIDX_FILE");
 932 13b2bc37 2022-10-23 stsp 		idxfd = -1;
 933 13b2bc37 2022-10-23 stsp 		goto done;
 934 13b2bc37 2022-10-23 stsp 	}
 935 13b2bc37 2022-10-23 stsp 	idxfd = -1;
 936 13b2bc37 2022-10-23 stsp 
 937 13b2bc37 2022-10-23 stsp 	memset(&ipack, 0, sizeof(ipack));
 938 13b2bc37 2022-10-23 stsp 	ipack.client_id = client->id;
 939 13b2bc37 2022-10-23 stsp 	if (client_has_capability(client, GOT_CAPA_REPORT_STATUS))
 940 13b2bc37 2022-10-23 stsp 		ipack.report_status = 1;
 941 13b2bc37 2022-10-23 stsp 
 942 13b2bc37 2022-10-23 stsp 	if (gotd_imsg_compose_event(&client->repo_write->iev,
 943 13b2bc37 2022-10-23 stsp 	    GOTD_IMSG_RECV_PACKFILE, PROC_GOTD, packfd,
 944 13b2bc37 2022-10-23 stsp 	    &ipack, sizeof(ipack)) == -1) {
 945 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("imsg compose RECV_PACKFILE");
 946 13b2bc37 2022-10-23 stsp 		packfd = -1;
 947 13b2bc37 2022-10-23 stsp 		goto done;
 948 13b2bc37 2022-10-23 stsp 	}
 949 13b2bc37 2022-10-23 stsp 	packfd = -1;
 950 13b2bc37 2022-10-23 stsp 
 951 13b2bc37 2022-10-23 stsp done:
 952 13b2bc37 2022-10-23 stsp 	free(basepath);
 953 13b2bc37 2022-10-23 stsp 	if (pipe[0] != -1 && close(pipe[0]) == -1 && err == NULL)
 954 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("close");
 955 13b2bc37 2022-10-23 stsp 	if (pipe[1] != -1 && close(pipe[1]) == -1 && err == NULL)
 956 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("close");
 957 13b2bc37 2022-10-23 stsp 	if (packfd != -1 && close(packfd) == -1 && err == NULL)
 958 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("close");
 959 13b2bc37 2022-10-23 stsp 	if (idxfd != -1 && close(idxfd) == -1 && err == NULL)
 960 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("close");
 961 13b2bc37 2022-10-23 stsp 	if (err) {
 962 13b2bc37 2022-10-23 stsp 		free(pack_path);
 963 13b2bc37 2022-10-23 stsp 		free(idx_path);
 964 13b2bc37 2022-10-23 stsp 	} else {
 965 13b2bc37 2022-10-23 stsp 		client->packfile_path = pack_path;
 966 13b2bc37 2022-10-23 stsp 		client->packidx_path = idx_path;
 967 13b2bc37 2022-10-23 stsp 	}
 968 13b2bc37 2022-10-23 stsp 	return err;
 969 13b2bc37 2022-10-23 stsp }
 970 13b2bc37 2022-10-23 stsp 
 971 13b2bc37 2022-10-23 stsp static void
 972 13b2bc37 2022-10-23 stsp gotd_request(int fd, short events, void *arg)
 973 13b2bc37 2022-10-23 stsp {
 974 13b2bc37 2022-10-23 stsp 	struct gotd_imsgev *iev = arg;
 975 13b2bc37 2022-10-23 stsp 	struct imsgbuf *ibuf = &iev->ibuf;
 976 13b2bc37 2022-10-23 stsp 	struct gotd_client *client = iev->handler_arg;
 977 13b2bc37 2022-10-23 stsp 	const struct got_error *err = NULL;
 978 13b2bc37 2022-10-23 stsp 	struct imsg imsg;
 979 13b2bc37 2022-10-23 stsp 	ssize_t n;
 980 13b2bc37 2022-10-23 stsp 
 981 13b2bc37 2022-10-23 stsp 	if (events & EV_WRITE) {
 982 13b2bc37 2022-10-23 stsp 		while (ibuf->w.queued) {
 983 13b2bc37 2022-10-23 stsp 			n = msgbuf_write(&ibuf->w);
 984 13b2bc37 2022-10-23 stsp 			if (n == -1 && errno == EPIPE) {
 985 13b2bc37 2022-10-23 stsp 				/*
 986 13b2bc37 2022-10-23 stsp 				 * The client has closed its socket.
 987 13b2bc37 2022-10-23 stsp 				 * This can happen when Git clients are
 988 13b2bc37 2022-10-23 stsp 				 * done sending pack file data.
 989 13b2bc37 2022-10-23 stsp 				*/
 990 13b2bc37 2022-10-23 stsp 				msgbuf_clear(&ibuf->w);
 991 13b2bc37 2022-10-23 stsp 				continue;
 992 13b2bc37 2022-10-23 stsp 			} else if (n == -1 && errno != EAGAIN) {
 993 13b2bc37 2022-10-23 stsp 				err = got_error_from_errno("imsg_flush");
 994 13b2bc37 2022-10-23 stsp 				disconnect_on_error(client, err);
 995 13b2bc37 2022-10-23 stsp 				return;
 996 13b2bc37 2022-10-23 stsp 			}
 997 13b2bc37 2022-10-23 stsp 			if (n == 0) {
 998 13b2bc37 2022-10-23 stsp 				/* Connection closed. */
 999 13b2bc37 2022-10-23 stsp 				err = got_error(GOT_ERR_EOF);
1000 13b2bc37 2022-10-23 stsp 				disconnect_on_error(client, err);
1001 13b2bc37 2022-10-23 stsp 				return;
1002 13b2bc37 2022-10-23 stsp 			}
1003 13b2bc37 2022-10-23 stsp 		}
1004 f1752522 2022-10-29 stsp 
1005 f1752522 2022-10-29 stsp 		/* Disconnect gotctl(8) now that messages have been sent. */
1006 f1752522 2022-10-29 stsp 		if (!client_is_reading(client) && !client_is_writing(client)) {
1007 f1752522 2022-10-29 stsp 			disconnect(client);
1008 f1752522 2022-10-29 stsp 			return;
1009 f1752522 2022-10-29 stsp 		}
1010 13b2bc37 2022-10-23 stsp 	}
1011 13b2bc37 2022-10-23 stsp 
1012 13b2bc37 2022-10-23 stsp 	if ((events & EV_READ) == 0)
1013 13b2bc37 2022-10-23 stsp 		return;
1014 13b2bc37 2022-10-23 stsp 
1015 13b2bc37 2022-10-23 stsp 	memset(&imsg, 0, sizeof(imsg));
1016 13b2bc37 2022-10-23 stsp 
1017 13b2bc37 2022-10-23 stsp 	while (err == NULL) {
1018 13b2bc37 2022-10-23 stsp 		err = gotd_imsg_recv(&imsg, ibuf, 0);
1019 13b2bc37 2022-10-23 stsp 		if (err) {
1020 13b2bc37 2022-10-23 stsp 			if (err->code == GOT_ERR_PRIVSEP_READ)
1021 13b2bc37 2022-10-23 stsp 				err = NULL;
1022 13b2bc37 2022-10-23 stsp 			break;
1023 13b2bc37 2022-10-23 stsp 		}
1024 13b2bc37 2022-10-23 stsp 
1025 13b2bc37 2022-10-23 stsp 		evtimer_del(&client->tmo);
1026 13b2bc37 2022-10-23 stsp 
1027 13b2bc37 2022-10-23 stsp 		switch (imsg.hdr.type) {
1028 f1752522 2022-10-29 stsp 		case GOTD_IMSG_INFO:
1029 f1752522 2022-10-29 stsp 			err = send_info(client);
1030 f1752522 2022-10-29 stsp 			break;
1031 f1752522 2022-10-29 stsp 		case GOTD_IMSG_STOP:
1032 f1752522 2022-10-29 stsp 			err = stop_gotd(client);
1033 f1752522 2022-10-29 stsp 			break;
1034 13b2bc37 2022-10-23 stsp 		case GOTD_IMSG_LIST_REFS:
1035 13b2bc37 2022-10-23 stsp 			if (client->state != GOTD_STATE_EXPECT_LIST_REFS) {
1036 13b2bc37 2022-10-23 stsp 				err = got_error_msg(GOT_ERR_BAD_REQUEST,
1037 13b2bc37 2022-10-23 stsp 				    "unexpected list-refs request received");
1038 13b2bc37 2022-10-23 stsp 				break;
1039 13b2bc37 2022-10-23 stsp 			}
1040 b50a2b46 2022-12-29 stsp 			err = start_client_session(client, &imsg);
1041 13b2bc37 2022-10-23 stsp 			if (err)
1042 13b2bc37 2022-10-23 stsp 				break;
1043 13b2bc37 2022-10-23 stsp 			break;
1044 13b2bc37 2022-10-23 stsp 		case GOTD_IMSG_CAPABILITIES:
1045 13b2bc37 2022-10-23 stsp 			if (client->state != GOTD_STATE_EXPECT_CAPABILITIES) {
1046 13b2bc37 2022-10-23 stsp 				err = got_error_msg(GOT_ERR_BAD_REQUEST,
1047 13b2bc37 2022-10-23 stsp 				    "unexpected capabilities received");
1048 13b2bc37 2022-10-23 stsp 				break;
1049 13b2bc37 2022-10-23 stsp 			}
1050 13b2bc37 2022-10-23 stsp 			log_debug("receiving capabilities from uid %d",
1051 13b2bc37 2022-10-23 stsp 			    client->euid);
1052 13b2bc37 2022-10-23 stsp 			err = recv_capabilities(client, &imsg);
1053 13b2bc37 2022-10-23 stsp 			break;
1054 13b2bc37 2022-10-23 stsp 		case GOTD_IMSG_CAPABILITY:
1055 13b2bc37 2022-10-23 stsp 			if (client->state != GOTD_STATE_EXPECT_CAPABILITIES) {
1056 13b2bc37 2022-10-23 stsp 				err = got_error_msg(GOT_ERR_BAD_REQUEST,
1057 13b2bc37 2022-10-23 stsp 				    "unexpected capability received");
1058 13b2bc37 2022-10-23 stsp 				break;
1059 13b2bc37 2022-10-23 stsp 			}
1060 13b2bc37 2022-10-23 stsp 			err = recv_capability(client, &imsg);
1061 13b2bc37 2022-10-23 stsp 			if (err || client->ncapabilities < client->ncapa_alloc)
1062 13b2bc37 2022-10-23 stsp 				break;
1063 13b2bc37 2022-10-23 stsp 			if (client_is_reading(client)) {
1064 13b2bc37 2022-10-23 stsp 				client->state = GOTD_STATE_EXPECT_WANT;
1065 13b2bc37 2022-10-23 stsp 				log_debug("uid %d: expecting want-lines",
1066 13b2bc37 2022-10-23 stsp 				    client->euid);
1067 13b2bc37 2022-10-23 stsp 			} else if (client_is_writing(client)) {
1068 13b2bc37 2022-10-23 stsp 				client->state = GOTD_STATE_EXPECT_REF_UPDATE;
1069 13b2bc37 2022-10-23 stsp 				log_debug("uid %d: expecting ref-update-lines",
1070 13b2bc37 2022-10-23 stsp 				    client->euid);
1071 13b2bc37 2022-10-23 stsp 			} else
1072 13b2bc37 2022-10-23 stsp 				fatalx("client %d is both reading and writing",
1073 13b2bc37 2022-10-23 stsp 				    client->euid);
1074 13b2bc37 2022-10-23 stsp 			break;
1075 13b2bc37 2022-10-23 stsp 		case GOTD_IMSG_WANT:
1076 13b2bc37 2022-10-23 stsp 			if (client->state != GOTD_STATE_EXPECT_WANT) {
1077 13b2bc37 2022-10-23 stsp 				err = got_error_msg(GOT_ERR_BAD_REQUEST,
1078 13b2bc37 2022-10-23 stsp 				    "unexpected want-line received");
1079 13b2bc37 2022-10-23 stsp 				break;
1080 13b2bc37 2022-10-23 stsp 			}
1081 13b2bc37 2022-10-23 stsp 			log_debug("received want-line from uid %d",
1082 13b2bc37 2022-10-23 stsp 			    client->euid);
1083 13b2bc37 2022-10-23 stsp 			err = ensure_client_is_reading(client);
1084 13b2bc37 2022-10-23 stsp 			if (err)
1085 13b2bc37 2022-10-23 stsp 				break;
1086 13b2bc37 2022-10-23 stsp 			err = forward_want(client, &imsg);
1087 13b2bc37 2022-10-23 stsp 			break;
1088 13b2bc37 2022-10-23 stsp 		case GOTD_IMSG_REF_UPDATE:
1089 13b2bc37 2022-10-23 stsp 			if (client->state != GOTD_STATE_EXPECT_REF_UPDATE) {
1090 13b2bc37 2022-10-23 stsp 				err = got_error_msg(GOT_ERR_BAD_REQUEST,
1091 13b2bc37 2022-10-23 stsp 				    "unexpected ref-update-line received");
1092 13b2bc37 2022-10-23 stsp 				break;
1093 13b2bc37 2022-10-23 stsp 			}
1094 13b2bc37 2022-10-23 stsp 			log_debug("received ref-update-line from uid %d",
1095 13b2bc37 2022-10-23 stsp 			    client->euid);
1096 13b2bc37 2022-10-23 stsp 			err = ensure_client_is_writing(client);
1097 13b2bc37 2022-10-23 stsp 			if (err)
1098 13b2bc37 2022-10-23 stsp 				break;
1099 13b2bc37 2022-10-23 stsp 			err = forward_ref_update(client, &imsg);
1100 13b2bc37 2022-10-23 stsp 			if (err)
1101 13b2bc37 2022-10-23 stsp 				break;
1102 13b2bc37 2022-10-23 stsp 			client->state = GOTD_STATE_EXPECT_MORE_REF_UPDATES;
1103 13b2bc37 2022-10-23 stsp 			break;
1104 13b2bc37 2022-10-23 stsp 		case GOTD_IMSG_HAVE:
1105 13b2bc37 2022-10-23 stsp 			if (client->state != GOTD_STATE_EXPECT_HAVE) {
1106 13b2bc37 2022-10-23 stsp 				err = got_error_msg(GOT_ERR_BAD_REQUEST,
1107 13b2bc37 2022-10-23 stsp 				    "unexpected have-line received");
1108 13b2bc37 2022-10-23 stsp 				break;
1109 13b2bc37 2022-10-23 stsp 			}
1110 13b2bc37 2022-10-23 stsp 			log_debug("received have-line from uid %d",
1111 13b2bc37 2022-10-23 stsp 			    client->euid);
1112 13b2bc37 2022-10-23 stsp 			err = ensure_client_is_reading(client);
1113 13b2bc37 2022-10-23 stsp 			if (err)
1114 13b2bc37 2022-10-23 stsp 				break;
1115 13b2bc37 2022-10-23 stsp 			err = forward_have(client, &imsg);
1116 13b2bc37 2022-10-23 stsp 			if (err)
1117 13b2bc37 2022-10-23 stsp 				break;
1118 13b2bc37 2022-10-23 stsp 			break;
1119 13b2bc37 2022-10-23 stsp 		case GOTD_IMSG_FLUSH:
1120 13b2bc37 2022-10-23 stsp 			if (client->state == GOTD_STATE_EXPECT_WANT ||
1121 13b2bc37 2022-10-23 stsp 			    client->state == GOTD_STATE_EXPECT_HAVE) {
1122 13b2bc37 2022-10-23 stsp 				err = ensure_client_is_reading(client);
1123 13b2bc37 2022-10-23 stsp 				if (err)
1124 13b2bc37 2022-10-23 stsp 					break;
1125 13b2bc37 2022-10-23 stsp 			} else if (client->state ==
1126 13b2bc37 2022-10-23 stsp 			    GOTD_STATE_EXPECT_MORE_REF_UPDATES) {
1127 13b2bc37 2022-10-23 stsp 				err = ensure_client_is_writing(client);
1128 13b2bc37 2022-10-23 stsp 				if (err)
1129 13b2bc37 2022-10-23 stsp 					break;
1130 13b2bc37 2022-10-23 stsp 			} else {
1131 13b2bc37 2022-10-23 stsp 				err = got_error_msg(GOT_ERR_BAD_REQUEST,
1132 13b2bc37 2022-10-23 stsp 				    "unexpected flush-pkt received");
1133 13b2bc37 2022-10-23 stsp 				break;
1134 13b2bc37 2022-10-23 stsp 			}
1135 13b2bc37 2022-10-23 stsp 			log_debug("received flush-pkt from uid %d",
1136 13b2bc37 2022-10-23 stsp 			    client->euid);
1137 13b2bc37 2022-10-23 stsp 			if (client->state == GOTD_STATE_EXPECT_WANT) {
1138 13b2bc37 2022-10-23 stsp 				client->state = GOTD_STATE_EXPECT_HAVE;
1139 13b2bc37 2022-10-23 stsp 				log_debug("uid %d: expecting have-lines",
1140 13b2bc37 2022-10-23 stsp 				    client->euid);
1141 13b2bc37 2022-10-23 stsp 			} else if (client->state == GOTD_STATE_EXPECT_HAVE) {
1142 13b2bc37 2022-10-23 stsp 				client->state = GOTD_STATE_EXPECT_DONE;
1143 13b2bc37 2022-10-23 stsp 				log_debug("uid %d: expecting 'done'",
1144 13b2bc37 2022-10-23 stsp 				    client->euid);
1145 13b2bc37 2022-10-23 stsp 			} else if (client->state ==
1146 13b2bc37 2022-10-23 stsp 			    GOTD_STATE_EXPECT_MORE_REF_UPDATES) {
1147 13b2bc37 2022-10-23 stsp 				client->state = GOTD_STATE_EXPECT_PACKFILE;
1148 13b2bc37 2022-10-23 stsp 				log_debug("uid %d: expecting packfile",
1149 13b2bc37 2022-10-23 stsp 				    client->euid);
1150 13b2bc37 2022-10-23 stsp 				err = recv_packfile(client);
1151 13b2bc37 2022-10-23 stsp 			} else {
1152 13b2bc37 2022-10-23 stsp 				/* should not happen, see above */
1153 13b2bc37 2022-10-23 stsp 				err = got_error_msg(GOT_ERR_BAD_REQUEST,
1154 13b2bc37 2022-10-23 stsp 				    "unexpected client state");
1155 13b2bc37 2022-10-23 stsp 				break;
1156 13b2bc37 2022-10-23 stsp 			}
1157 13b2bc37 2022-10-23 stsp 			break;
1158 13b2bc37 2022-10-23 stsp 		case GOTD_IMSG_DONE:
1159 13b2bc37 2022-10-23 stsp 			if (client->state != GOTD_STATE_EXPECT_HAVE &&
1160 13b2bc37 2022-10-23 stsp 			    client->state != GOTD_STATE_EXPECT_DONE) {
1161 13b2bc37 2022-10-23 stsp 				err = got_error_msg(GOT_ERR_BAD_REQUEST,
1162 13b2bc37 2022-10-23 stsp 				    "unexpected flush-pkt received");
1163 13b2bc37 2022-10-23 stsp 				break;
1164 13b2bc37 2022-10-23 stsp 			}
1165 13b2bc37 2022-10-23 stsp 			log_debug("received 'done' from uid %d", client->euid);
1166 13b2bc37 2022-10-23 stsp 			err = ensure_client_is_reading(client);
1167 13b2bc37 2022-10-23 stsp 			if (err)
1168 13b2bc37 2022-10-23 stsp 				break;
1169 13b2bc37 2022-10-23 stsp 			client->state = GOTD_STATE_DONE;
1170 13b2bc37 2022-10-23 stsp 			err = send_packfile(client);
1171 13b2bc37 2022-10-23 stsp 			break;
1172 13b2bc37 2022-10-23 stsp 		default:
1173 13b2bc37 2022-10-23 stsp 			err = got_error(GOT_ERR_PRIVSEP_MSG);
1174 13b2bc37 2022-10-23 stsp 			break;
1175 13b2bc37 2022-10-23 stsp 		}
1176 13b2bc37 2022-10-23 stsp 
1177 13b2bc37 2022-10-23 stsp 		imsg_free(&imsg);
1178 13b2bc37 2022-10-23 stsp 	}
1179 13b2bc37 2022-10-23 stsp 
1180 13b2bc37 2022-10-23 stsp 	if (err) {
1181 13b2bc37 2022-10-23 stsp 		if (err->code != GOT_ERR_EOF ||
1182 13b2bc37 2022-10-23 stsp 		    client->state != GOTD_STATE_EXPECT_PACKFILE)
1183 13b2bc37 2022-10-23 stsp 			disconnect_on_error(client, err);
1184 13b2bc37 2022-10-23 stsp 	} else {
1185 13b2bc37 2022-10-23 stsp 		gotd_imsg_event_add(&client->iev);
1186 13b2bc37 2022-10-23 stsp 		evtimer_add(&client->tmo, &timeout);
1187 13b2bc37 2022-10-23 stsp 	}
1188 13b2bc37 2022-10-23 stsp }
1189 13b2bc37 2022-10-23 stsp 
1190 13b2bc37 2022-10-23 stsp static void
1191 13b2bc37 2022-10-23 stsp gotd_request_timeout(int fd, short events, void *arg)
1192 13b2bc37 2022-10-23 stsp {
1193 13b2bc37 2022-10-23 stsp 	struct gotd_client *client = arg;
1194 13b2bc37 2022-10-23 stsp 
1195 13b2bc37 2022-10-23 stsp 	log_debug("disconnecting uid %d due to timeout", client->euid);
1196 13b2bc37 2022-10-23 stsp 	disconnect(client);
1197 13b2bc37 2022-10-23 stsp }
1198 13b2bc37 2022-10-23 stsp 
1199 d93ecf7d 2022-12-14 stsp static const struct got_error *
1200 d93ecf7d 2022-12-14 stsp recv_connect(uint32_t *client_id, struct imsg *imsg)
1201 13b2bc37 2022-10-23 stsp {
1202 d93ecf7d 2022-12-14 stsp 	const struct got_error *err = NULL;
1203 d93ecf7d 2022-12-14 stsp 	struct gotd_imsg_connect iconnect;
1204 d93ecf7d 2022-12-14 stsp 	size_t datalen;
1205 13b2bc37 2022-10-23 stsp 	int s = -1;
1206 13b2bc37 2022-10-23 stsp 	struct gotd_client *client = NULL;
1207 13b2bc37 2022-10-23 stsp 	uid_t euid;
1208 13b2bc37 2022-10-23 stsp 	gid_t egid;
1209 13b2bc37 2022-10-23 stsp 
1210 d93ecf7d 2022-12-14 stsp 	*client_id = 0;
1211 13b2bc37 2022-10-23 stsp 
1212 d93ecf7d 2022-12-14 stsp 	datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
1213 d93ecf7d 2022-12-14 stsp 	if (datalen != sizeof(iconnect))
1214 d93ecf7d 2022-12-14 stsp 		return got_error(GOT_ERR_PRIVSEP_LEN);
1215 d93ecf7d 2022-12-14 stsp 	memcpy(&iconnect, imsg->data, sizeof(iconnect));
1216 13b2bc37 2022-10-23 stsp 
1217 d93ecf7d 2022-12-14 stsp 	s = imsg->fd;
1218 13b2bc37 2022-10-23 stsp 	if (s == -1) {
1219 d93ecf7d 2022-12-14 stsp 		err = got_error(GOT_ERR_PRIVSEP_NO_FD);
1220 d93ecf7d 2022-12-14 stsp 		goto done;
1221 13b2bc37 2022-10-23 stsp 	}
1222 13b2bc37 2022-10-23 stsp 
1223 d93ecf7d 2022-12-14 stsp 	if (find_client(iconnect.client_id)) {
1224 d93ecf7d 2022-12-14 stsp 		err = got_error_msg(GOT_ERR_CLIENT_ID, "duplicate client ID");
1225 d93ecf7d 2022-12-14 stsp 		goto done;
1226 d93ecf7d 2022-12-14 stsp 	}
1227 13b2bc37 2022-10-23 stsp 
1228 13b2bc37 2022-10-23 stsp 	if (getpeereid(s, &euid, &egid) == -1) {
1229 d93ecf7d 2022-12-14 stsp 		err = got_error_from_errno("getpeerid");
1230 d93ecf7d 2022-12-14 stsp 		goto done;
1231 13b2bc37 2022-10-23 stsp 	}
1232 13b2bc37 2022-10-23 stsp 
1233 13b2bc37 2022-10-23 stsp 	client = calloc(1, sizeof(*client));
1234 13b2bc37 2022-10-23 stsp 	if (client == NULL) {
1235 d93ecf7d 2022-12-14 stsp 		err = got_error_from_errno("calloc");
1236 d93ecf7d 2022-12-14 stsp 		goto done;
1237 13b2bc37 2022-10-23 stsp 	}
1238 13b2bc37 2022-10-23 stsp 
1239 d93ecf7d 2022-12-14 stsp 	*client_id = iconnect.client_id;
1240 d93ecf7d 2022-12-14 stsp 
1241 13b2bc37 2022-10-23 stsp 	client->state = GOTD_STATE_EXPECT_LIST_REFS;
1242 d93ecf7d 2022-12-14 stsp 	client->id = iconnect.client_id;
1243 13b2bc37 2022-10-23 stsp 	client->fd = s;
1244 13b2bc37 2022-10-23 stsp 	s = -1;
1245 13b2bc37 2022-10-23 stsp 	client->delta_cache_fd = -1;
1246 13b2bc37 2022-10-23 stsp 	client->euid = euid;
1247 13b2bc37 2022-10-23 stsp 	client->egid = egid;
1248 13b2bc37 2022-10-23 stsp 	client->nref_updates = -1;
1249 13b2bc37 2022-10-23 stsp 
1250 13b2bc37 2022-10-23 stsp 	imsg_init(&client->iev.ibuf, client->fd);
1251 13b2bc37 2022-10-23 stsp 	client->iev.handler = gotd_request;
1252 13b2bc37 2022-10-23 stsp 	client->iev.events = EV_READ;
1253 13b2bc37 2022-10-23 stsp 	client->iev.handler_arg = client;
1254 13b2bc37 2022-10-23 stsp 
1255 13b2bc37 2022-10-23 stsp 	event_set(&client->iev.ev, client->fd, EV_READ, gotd_request,
1256 13b2bc37 2022-10-23 stsp 	    &client->iev);
1257 13b2bc37 2022-10-23 stsp 	gotd_imsg_event_add(&client->iev);
1258 13b2bc37 2022-10-23 stsp 
1259 13b2bc37 2022-10-23 stsp 	evtimer_set(&client->tmo, gotd_request_timeout, client);
1260 13b2bc37 2022-10-23 stsp 
1261 13b2bc37 2022-10-23 stsp 	add_client(client);
1262 13b2bc37 2022-10-23 stsp 	log_debug("%s: new client uid %d connected on fd %d", __func__,
1263 13b2bc37 2022-10-23 stsp 	    client->euid, client->fd);
1264 d93ecf7d 2022-12-14 stsp done:
1265 d93ecf7d 2022-12-14 stsp 	if (err) {
1266 b50a2b46 2022-12-29 stsp 		struct gotd_child_proc *listen_proc = &gotd.listen_proc;
1267 d93ecf7d 2022-12-14 stsp 		struct gotd_imsg_disconnect idisconnect;
1268 13b2bc37 2022-10-23 stsp 
1269 d93ecf7d 2022-12-14 stsp 		idisconnect.client_id = client->id;
1270 d93ecf7d 2022-12-14 stsp 		if (gotd_imsg_compose_event(&listen_proc->iev,
1271 d93ecf7d 2022-12-14 stsp 		    GOTD_IMSG_DISCONNECT, PROC_GOTD, -1,
1272 d93ecf7d 2022-12-14 stsp 		    &idisconnect, sizeof(idisconnect)) == -1)
1273 d93ecf7d 2022-12-14 stsp 			log_warn("imsg compose DISCONNECT");
1274 d93ecf7d 2022-12-14 stsp 
1275 d93ecf7d 2022-12-14 stsp 		if (s != -1)
1276 d93ecf7d 2022-12-14 stsp 			close(s);
1277 d93ecf7d 2022-12-14 stsp 	}
1278 d93ecf7d 2022-12-14 stsp 
1279 d93ecf7d 2022-12-14 stsp 	return err;
1280 13b2bc37 2022-10-23 stsp }
1281 13b2bc37 2022-10-23 stsp 
1282 13b2bc37 2022-10-23 stsp static const char *gotd_proc_names[PROC_MAX] = {
1283 13b2bc37 2022-10-23 stsp 	"parent",
1284 d93ecf7d 2022-12-14 stsp 	"listen",
1285 13b2bc37 2022-10-23 stsp 	"repo_read",
1286 13b2bc37 2022-10-23 stsp 	"repo_write"
1287 13b2bc37 2022-10-23 stsp };
1288 13b2bc37 2022-10-23 stsp 
1289 13b2bc37 2022-10-23 stsp static void
1290 13b2bc37 2022-10-23 stsp kill_proc(struct gotd_child_proc *proc, int fatal)
1291 13b2bc37 2022-10-23 stsp {
1292 13b2bc37 2022-10-23 stsp 	if (fatal) {
1293 13b2bc37 2022-10-23 stsp 		log_warnx("sending SIGKILL to PID %d", proc->pid);
1294 13b2bc37 2022-10-23 stsp 		kill(proc->pid, SIGKILL);
1295 13b2bc37 2022-10-23 stsp 	} else
1296 13b2bc37 2022-10-23 stsp 		kill(proc->pid, SIGTERM);
1297 13b2bc37 2022-10-23 stsp }
1298 13b2bc37 2022-10-23 stsp 
1299 13b2bc37 2022-10-23 stsp static void
1300 13b2bc37 2022-10-23 stsp gotd_shutdown(void)
1301 13b2bc37 2022-10-23 stsp {
1302 13b2bc37 2022-10-23 stsp 	struct gotd_child_proc *proc;
1303 b50a2b46 2022-12-29 stsp 	uint64_t slot;
1304 13b2bc37 2022-10-23 stsp 
1305 b50a2b46 2022-12-29 stsp 	for (slot = 0; slot < nitems(gotd_clients); slot++) {
1306 b50a2b46 2022-12-29 stsp 		struct gotd_client *c, *tmp;
1307 b50a2b46 2022-12-29 stsp 
1308 b50a2b46 2022-12-29 stsp 		STAILQ_FOREACH_SAFE(c, &gotd_clients[slot], entry, tmp)
1309 b50a2b46 2022-12-29 stsp 			disconnect(c);
1310 13b2bc37 2022-10-23 stsp 	}
1311 13b2bc37 2022-10-23 stsp 
1312 b50a2b46 2022-12-29 stsp 	proc = &gotd.listen_proc;
1313 b50a2b46 2022-12-29 stsp 	msgbuf_clear(&proc->iev.ibuf.w);
1314 b50a2b46 2022-12-29 stsp 	close(proc->iev.ibuf.fd);
1315 b50a2b46 2022-12-29 stsp 	kill_proc(proc, 0);
1316 b50a2b46 2022-12-29 stsp 	wait_for_children(proc->pid);
1317 13b2bc37 2022-10-23 stsp 
1318 13b2bc37 2022-10-23 stsp 	log_info("terminating");
1319 13b2bc37 2022-10-23 stsp 	exit(0);
1320 13b2bc37 2022-10-23 stsp }
1321 13b2bc37 2022-10-23 stsp 
1322 13b2bc37 2022-10-23 stsp void
1323 13b2bc37 2022-10-23 stsp gotd_sighdlr(int sig, short event, void *arg)
1324 13b2bc37 2022-10-23 stsp {
1325 13b2bc37 2022-10-23 stsp 	/*
1326 13b2bc37 2022-10-23 stsp 	 * Normal signal handler rules don't apply because libevent
1327 13b2bc37 2022-10-23 stsp 	 * decouples for us.
1328 13b2bc37 2022-10-23 stsp 	 */
1329 13b2bc37 2022-10-23 stsp 
1330 13b2bc37 2022-10-23 stsp 	switch (sig) {
1331 13b2bc37 2022-10-23 stsp 	case SIGHUP:
1332 13b2bc37 2022-10-23 stsp 		log_info("%s: ignoring SIGHUP", __func__);
1333 13b2bc37 2022-10-23 stsp 		break;
1334 13b2bc37 2022-10-23 stsp 	case SIGUSR1:
1335 13b2bc37 2022-10-23 stsp 		log_info("%s: ignoring SIGUSR1", __func__);
1336 13b2bc37 2022-10-23 stsp 		break;
1337 13b2bc37 2022-10-23 stsp 	case SIGTERM:
1338 13b2bc37 2022-10-23 stsp 	case SIGINT:
1339 13b2bc37 2022-10-23 stsp 		gotd_shutdown();
1340 13b2bc37 2022-10-23 stsp 		log_warnx("gotd terminating");
1341 13b2bc37 2022-10-23 stsp 		exit(0);
1342 13b2bc37 2022-10-23 stsp 		break;
1343 13b2bc37 2022-10-23 stsp 	default:
1344 13b2bc37 2022-10-23 stsp 		fatalx("unexpected signal");
1345 13b2bc37 2022-10-23 stsp 	}
1346 13b2bc37 2022-10-23 stsp }
1347 13b2bc37 2022-10-23 stsp 
1348 13b2bc37 2022-10-23 stsp static const struct got_error *
1349 13b2bc37 2022-10-23 stsp ensure_proc_is_reading(struct gotd_client *client,
1350 13b2bc37 2022-10-23 stsp     struct gotd_child_proc *proc)
1351 13b2bc37 2022-10-23 stsp {
1352 13b2bc37 2022-10-23 stsp 	if (!client_is_reading(client)) {
1353 13b2bc37 2022-10-23 stsp 		kill_proc(proc, 1);
1354 13b2bc37 2022-10-23 stsp 		return got_error_fmt(GOT_ERR_BAD_PACKET,
1355 13b2bc37 2022-10-23 stsp 		    "PID %d handled a read-request for uid %d but this "
1356 13b2bc37 2022-10-23 stsp 		    "user is not reading from a repository", proc->pid,
1357 13b2bc37 2022-10-23 stsp 		    client->euid);
1358 13b2bc37 2022-10-23 stsp 	}
1359 13b2bc37 2022-10-23 stsp 
1360 13b2bc37 2022-10-23 stsp 	return NULL;
1361 13b2bc37 2022-10-23 stsp }
1362 13b2bc37 2022-10-23 stsp 
1363 13b2bc37 2022-10-23 stsp static const struct got_error *
1364 13b2bc37 2022-10-23 stsp ensure_proc_is_writing(struct gotd_client *client,
1365 13b2bc37 2022-10-23 stsp     struct gotd_child_proc *proc)
1366 13b2bc37 2022-10-23 stsp {
1367 13b2bc37 2022-10-23 stsp 	if (!client_is_writing(client)) {
1368 13b2bc37 2022-10-23 stsp 		kill_proc(proc, 1);
1369 13b2bc37 2022-10-23 stsp 		return got_error_fmt(GOT_ERR_BAD_PACKET,
1370 13b2bc37 2022-10-23 stsp 		    "PID %d handled a write-request for uid %d but this "
1371 13b2bc37 2022-10-23 stsp 		    "user is not writing to a repository", proc->pid,
1372 13b2bc37 2022-10-23 stsp 		    client->euid);
1373 13b2bc37 2022-10-23 stsp 	}
1374 13b2bc37 2022-10-23 stsp 
1375 13b2bc37 2022-10-23 stsp 	return NULL;
1376 13b2bc37 2022-10-23 stsp }
1377 13b2bc37 2022-10-23 stsp 
1378 13b2bc37 2022-10-23 stsp static int
1379 13b2bc37 2022-10-23 stsp verify_imsg_src(struct gotd_client *client, struct gotd_child_proc *proc,
1380 13b2bc37 2022-10-23 stsp     struct imsg *imsg)
1381 13b2bc37 2022-10-23 stsp {
1382 13b2bc37 2022-10-23 stsp 	const struct got_error *err;
1383 13b2bc37 2022-10-23 stsp 	struct gotd_child_proc *client_proc;
1384 13b2bc37 2022-10-23 stsp 	int ret = 0;
1385 13b2bc37 2022-10-23 stsp 
1386 d93ecf7d 2022-12-14 stsp 	if (proc->type == PROC_REPO_READ || proc->type == PROC_REPO_WRITE) {
1387 d93ecf7d 2022-12-14 stsp 		client_proc = get_client_proc(client);
1388 d93ecf7d 2022-12-14 stsp 		if (client_proc == NULL)
1389 d93ecf7d 2022-12-14 stsp 			fatalx("no process found for uid %d", client->euid);
1390 d93ecf7d 2022-12-14 stsp 		if (proc->pid != client_proc->pid) {
1391 d93ecf7d 2022-12-14 stsp 			kill_proc(proc, 1);
1392 d93ecf7d 2022-12-14 stsp 			log_warnx("received message from PID %d for uid %d, "
1393 d93ecf7d 2022-12-14 stsp 			    "while PID %d is the process serving this user",
1394 d93ecf7d 2022-12-14 stsp 			    proc->pid, client->euid, client_proc->pid);
1395 d93ecf7d 2022-12-14 stsp 			return 0;
1396 d93ecf7d 2022-12-14 stsp 		}
1397 13b2bc37 2022-10-23 stsp 	}
1398 13b2bc37 2022-10-23 stsp 
1399 13b2bc37 2022-10-23 stsp 	switch (imsg->hdr.type) {
1400 13b2bc37 2022-10-23 stsp 	case GOTD_IMSG_ERROR:
1401 13b2bc37 2022-10-23 stsp 		ret = 1;
1402 13b2bc37 2022-10-23 stsp 		break;
1403 d93ecf7d 2022-12-14 stsp 	case GOTD_IMSG_CONNECT:
1404 d93ecf7d 2022-12-14 stsp 		if (proc->type != PROC_LISTEN) {
1405 d93ecf7d 2022-12-14 stsp 			err = got_error_fmt(GOT_ERR_BAD_PACKET,
1406 d93ecf7d 2022-12-14 stsp 			    "new connection for uid %d from PID %d "
1407 d93ecf7d 2022-12-14 stsp 			    "which is not the listen process",
1408 d93ecf7d 2022-12-14 stsp 			    proc->pid, client->euid);
1409 d93ecf7d 2022-12-14 stsp 		} else
1410 d93ecf7d 2022-12-14 stsp 			ret = 1;
1411 d93ecf7d 2022-12-14 stsp 		break;
1412 b50a2b46 2022-12-29 stsp 	case GOTD_IMSG_REPO_CHILD_READY:
1413 b50a2b46 2022-12-29 stsp 		if (proc->type != PROC_REPO_READ &&
1414 b50a2b46 2022-12-29 stsp 		    proc->type != PROC_REPO_WRITE) {
1415 b50a2b46 2022-12-29 stsp 			err = got_error_fmt(GOT_ERR_BAD_PACKET,
1416 b50a2b46 2022-12-29 stsp 			    "unexpected \"ready\" signal from PID %d",
1417 b50a2b46 2022-12-29 stsp 			    proc->pid);
1418 b50a2b46 2022-12-29 stsp 		} else
1419 b50a2b46 2022-12-29 stsp 			ret = 1;
1420 b50a2b46 2022-12-29 stsp 		break;
1421 13b2bc37 2022-10-23 stsp 	case GOTD_IMSG_PACKFILE_DONE:
1422 13b2bc37 2022-10-23 stsp 		err = ensure_proc_is_reading(client, proc);
1423 13b2bc37 2022-10-23 stsp 		if (err)
1424 13b2bc37 2022-10-23 stsp 			log_warnx("uid %d: %s", client->euid, err->msg);
1425 13b2bc37 2022-10-23 stsp 		else
1426 13b2bc37 2022-10-23 stsp 			ret = 1;
1427 13b2bc37 2022-10-23 stsp 		break;
1428 13b2bc37 2022-10-23 stsp 	case GOTD_IMSG_PACKFILE_INSTALL:
1429 13b2bc37 2022-10-23 stsp 	case GOTD_IMSG_REF_UPDATES_START:
1430 13b2bc37 2022-10-23 stsp 	case GOTD_IMSG_REF_UPDATE:
1431 13b2bc37 2022-10-23 stsp 		err = ensure_proc_is_writing(client, proc);
1432 13b2bc37 2022-10-23 stsp 		if (err)
1433 13b2bc37 2022-10-23 stsp 			log_warnx("uid %d: %s", client->euid, err->msg);
1434 13b2bc37 2022-10-23 stsp 		else
1435 13b2bc37 2022-10-23 stsp 			ret = 1;
1436 13b2bc37 2022-10-23 stsp 		break;
1437 13b2bc37 2022-10-23 stsp 	default:
1438 13b2bc37 2022-10-23 stsp 		log_debug("%s: unexpected imsg %d", __func__, imsg->hdr.type);
1439 13b2bc37 2022-10-23 stsp 		break;
1440 13b2bc37 2022-10-23 stsp 	}
1441 13b2bc37 2022-10-23 stsp 
1442 13b2bc37 2022-10-23 stsp 	return ret;
1443 13b2bc37 2022-10-23 stsp }
1444 13b2bc37 2022-10-23 stsp 
1445 13b2bc37 2022-10-23 stsp static const struct got_error *
1446 b50a2b46 2022-12-29 stsp list_refs_request(struct gotd_client *client, struct gotd_imsgev *iev)
1447 b50a2b46 2022-12-29 stsp {
1448 b50a2b46 2022-12-29 stsp 	static const struct got_error *err;
1449 b50a2b46 2022-12-29 stsp 	struct gotd_imsg_list_refs_internal ilref;
1450 b50a2b46 2022-12-29 stsp 	int fd;
1451 b50a2b46 2022-12-29 stsp 
1452 b50a2b46 2022-12-29 stsp 	memset(&ilref, 0, sizeof(ilref));
1453 b50a2b46 2022-12-29 stsp 	ilref.client_id = client->id;
1454 b50a2b46 2022-12-29 stsp 
1455 b50a2b46 2022-12-29 stsp 	fd = dup(client->fd);
1456 b50a2b46 2022-12-29 stsp 	if (fd == -1)
1457 b50a2b46 2022-12-29 stsp 		return got_error_from_errno("dup");
1458 b50a2b46 2022-12-29 stsp 
1459 b50a2b46 2022-12-29 stsp 	if (gotd_imsg_compose_event(iev, GOTD_IMSG_LIST_REFS_INTERNAL,
1460 b50a2b46 2022-12-29 stsp 	    PROC_GOTD, fd, &ilref, sizeof(ilref)) == -1) {
1461 b50a2b46 2022-12-29 stsp 		err = got_error_from_errno("imsg compose WANT");
1462 b50a2b46 2022-12-29 stsp 		close(fd);
1463 b50a2b46 2022-12-29 stsp 		return err;
1464 b50a2b46 2022-12-29 stsp 	}
1465 b50a2b46 2022-12-29 stsp 
1466 b50a2b46 2022-12-29 stsp 	client->state = GOTD_STATE_EXPECT_CAPABILITIES;
1467 b50a2b46 2022-12-29 stsp 	log_debug("uid %d: expecting capabilities", client->euid);
1468 b50a2b46 2022-12-29 stsp 	return NULL;
1469 b50a2b46 2022-12-29 stsp }
1470 b50a2b46 2022-12-29 stsp 
1471 b50a2b46 2022-12-29 stsp static const struct got_error *
1472 13b2bc37 2022-10-23 stsp recv_packfile_done(uint32_t *client_id, struct imsg *imsg)
1473 13b2bc37 2022-10-23 stsp {
1474 13b2bc37 2022-10-23 stsp 	struct gotd_imsg_packfile_done idone;
1475 13b2bc37 2022-10-23 stsp 	size_t datalen;
1476 13b2bc37 2022-10-23 stsp 
1477 13b2bc37 2022-10-23 stsp 	log_debug("packfile-done received");
1478 13b2bc37 2022-10-23 stsp 
1479 13b2bc37 2022-10-23 stsp 	datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
1480 13b2bc37 2022-10-23 stsp 	if (datalen != sizeof(idone))
1481 13b2bc37 2022-10-23 stsp 		return got_error(GOT_ERR_PRIVSEP_LEN);
1482 13b2bc37 2022-10-23 stsp 	memcpy(&idone, imsg->data, sizeof(idone));
1483 13b2bc37 2022-10-23 stsp 
1484 13b2bc37 2022-10-23 stsp 	*client_id = idone.client_id;
1485 13b2bc37 2022-10-23 stsp 	return NULL;
1486 13b2bc37 2022-10-23 stsp }
1487 13b2bc37 2022-10-23 stsp 
1488 13b2bc37 2022-10-23 stsp static const struct got_error *
1489 13b2bc37 2022-10-23 stsp recv_packfile_install(uint32_t *client_id, struct imsg *imsg)
1490 13b2bc37 2022-10-23 stsp {
1491 13b2bc37 2022-10-23 stsp 	struct gotd_imsg_packfile_install inst;
1492 13b2bc37 2022-10-23 stsp 	size_t datalen;
1493 13b2bc37 2022-10-23 stsp 
1494 13b2bc37 2022-10-23 stsp 	log_debug("packfile-install received");
1495 13b2bc37 2022-10-23 stsp 
1496 13b2bc37 2022-10-23 stsp 	datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
1497 13b2bc37 2022-10-23 stsp 	if (datalen != sizeof(inst))
1498 13b2bc37 2022-10-23 stsp 		return got_error(GOT_ERR_PRIVSEP_LEN);
1499 13b2bc37 2022-10-23 stsp 	memcpy(&inst, imsg->data, sizeof(inst));
1500 13b2bc37 2022-10-23 stsp 
1501 13b2bc37 2022-10-23 stsp 	*client_id = inst.client_id;
1502 13b2bc37 2022-10-23 stsp 	return NULL;
1503 13b2bc37 2022-10-23 stsp }
1504 13b2bc37 2022-10-23 stsp 
1505 13b2bc37 2022-10-23 stsp static const struct got_error *
1506 13b2bc37 2022-10-23 stsp recv_ref_updates_start(uint32_t *client_id, struct imsg *imsg)
1507 13b2bc37 2022-10-23 stsp {
1508 13b2bc37 2022-10-23 stsp 	struct gotd_imsg_ref_updates_start istart;
1509 13b2bc37 2022-10-23 stsp 	size_t datalen;
1510 13b2bc37 2022-10-23 stsp 
1511 13b2bc37 2022-10-23 stsp 	log_debug("ref-updates-start received");
1512 13b2bc37 2022-10-23 stsp 
1513 13b2bc37 2022-10-23 stsp 	datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
1514 13b2bc37 2022-10-23 stsp 	if (datalen != sizeof(istart))
1515 13b2bc37 2022-10-23 stsp 		return got_error(GOT_ERR_PRIVSEP_LEN);
1516 13b2bc37 2022-10-23 stsp 	memcpy(&istart, imsg->data, sizeof(istart));
1517 13b2bc37 2022-10-23 stsp 
1518 13b2bc37 2022-10-23 stsp 	*client_id = istart.client_id;
1519 13b2bc37 2022-10-23 stsp 	return NULL;
1520 13b2bc37 2022-10-23 stsp }
1521 13b2bc37 2022-10-23 stsp 
1522 13b2bc37 2022-10-23 stsp static const struct got_error *
1523 13b2bc37 2022-10-23 stsp recv_ref_update(uint32_t *client_id, struct imsg *imsg)
1524 13b2bc37 2022-10-23 stsp {
1525 13b2bc37 2022-10-23 stsp 	struct gotd_imsg_ref_update iref;
1526 13b2bc37 2022-10-23 stsp 	size_t datalen;
1527 13b2bc37 2022-10-23 stsp 
1528 13b2bc37 2022-10-23 stsp 	log_debug("ref-update received");
1529 13b2bc37 2022-10-23 stsp 
1530 13b2bc37 2022-10-23 stsp 	datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
1531 13b2bc37 2022-10-23 stsp 	if (datalen < sizeof(iref))
1532 13b2bc37 2022-10-23 stsp 		return got_error(GOT_ERR_PRIVSEP_LEN);
1533 13b2bc37 2022-10-23 stsp 	memcpy(&iref, imsg->data, sizeof(iref));
1534 13b2bc37 2022-10-23 stsp 
1535 13b2bc37 2022-10-23 stsp 	*client_id = iref.client_id;
1536 13b2bc37 2022-10-23 stsp 	return NULL;
1537 13b2bc37 2022-10-23 stsp }
1538 13b2bc37 2022-10-23 stsp 
1539 13b2bc37 2022-10-23 stsp static const struct got_error *
1540 13b2bc37 2022-10-23 stsp send_ref_update_ok(struct gotd_client *client,
1541 13b2bc37 2022-10-23 stsp     struct gotd_imsg_ref_update *iref, const char *refname)
1542 13b2bc37 2022-10-23 stsp {
1543 13b2bc37 2022-10-23 stsp 	struct gotd_imsg_ref_update_ok iok;
1544 13b2bc37 2022-10-23 stsp 	struct ibuf *wbuf;
1545 13b2bc37 2022-10-23 stsp 	size_t len;
1546 13b2bc37 2022-10-23 stsp 
1547 13b2bc37 2022-10-23 stsp 	memset(&iok, 0, sizeof(iok));
1548 13b2bc37 2022-10-23 stsp 	iok.client_id = client->id;
1549 13b2bc37 2022-10-23 stsp 	memcpy(iok.old_id, iref->old_id, SHA1_DIGEST_LENGTH);
1550 13b2bc37 2022-10-23 stsp 	memcpy(iok.new_id, iref->new_id, SHA1_DIGEST_LENGTH);
1551 13b2bc37 2022-10-23 stsp 	iok.name_len = strlen(refname);
1552 13b2bc37 2022-10-23 stsp 
1553 13b2bc37 2022-10-23 stsp 	len = sizeof(iok) + iok.name_len;
1554 13b2bc37 2022-10-23 stsp 	wbuf = imsg_create(&client->iev.ibuf, GOTD_IMSG_REF_UPDATE_OK,
1555 13b2bc37 2022-10-23 stsp 	    PROC_GOTD, gotd.pid, len);
1556 13b2bc37 2022-10-23 stsp 	if (wbuf == NULL)
1557 13b2bc37 2022-10-23 stsp 		return got_error_from_errno("imsg_create REF_UPDATE_OK");
1558 13b2bc37 2022-10-23 stsp 
1559 13b2bc37 2022-10-23 stsp 	if (imsg_add(wbuf, &iok, sizeof(iok)) == -1)
1560 13b2bc37 2022-10-23 stsp 		return got_error_from_errno("imsg_add REF_UPDATE_OK");
1561 13b2bc37 2022-10-23 stsp 	if (imsg_add(wbuf, refname, iok.name_len) == -1)
1562 13b2bc37 2022-10-23 stsp 		return got_error_from_errno("imsg_add REF_UPDATE_OK");
1563 13b2bc37 2022-10-23 stsp 
1564 13b2bc37 2022-10-23 stsp 	wbuf->fd = -1;
1565 13b2bc37 2022-10-23 stsp 	imsg_close(&client->iev.ibuf, wbuf);
1566 13b2bc37 2022-10-23 stsp 	gotd_imsg_event_add(&client->iev);
1567 13b2bc37 2022-10-23 stsp 	return NULL;
1568 13b2bc37 2022-10-23 stsp }
1569 13b2bc37 2022-10-23 stsp 
1570 13b2bc37 2022-10-23 stsp static void
1571 13b2bc37 2022-10-23 stsp send_refs_updated(struct gotd_client *client)
1572 13b2bc37 2022-10-23 stsp {
1573 13b2bc37 2022-10-23 stsp 	if (gotd_imsg_compose_event(&client->iev,
1574 13b2bc37 2022-10-23 stsp 	    GOTD_IMSG_REFS_UPDATED, PROC_GOTD, -1, NULL, 0) == -1)
1575 13b2bc37 2022-10-23 stsp 		log_warn("imsg compose REFS_UPDATED");
1576 13b2bc37 2022-10-23 stsp }
1577 13b2bc37 2022-10-23 stsp 
1578 13b2bc37 2022-10-23 stsp static const struct got_error *
1579 13b2bc37 2022-10-23 stsp send_ref_update_ng(struct gotd_client *client,
1580 13b2bc37 2022-10-23 stsp     struct gotd_imsg_ref_update *iref, const char *refname,
1581 13b2bc37 2022-10-23 stsp     const char *reason)
1582 13b2bc37 2022-10-23 stsp {
1583 13b2bc37 2022-10-23 stsp 	const struct got_error *ng_err;
1584 13b2bc37 2022-10-23 stsp 	struct gotd_imsg_ref_update_ng ing;
1585 13b2bc37 2022-10-23 stsp 	struct ibuf *wbuf;
1586 13b2bc37 2022-10-23 stsp 	size_t len;
1587 13b2bc37 2022-10-23 stsp 
1588 13b2bc37 2022-10-23 stsp 	memset(&ing, 0, sizeof(ing));
1589 13b2bc37 2022-10-23 stsp 	ing.client_id = client->id;
1590 13b2bc37 2022-10-23 stsp 	memcpy(ing.old_id, iref->old_id, SHA1_DIGEST_LENGTH);
1591 13b2bc37 2022-10-23 stsp 	memcpy(ing.new_id, iref->new_id, SHA1_DIGEST_LENGTH);
1592 13b2bc37 2022-10-23 stsp 	ing.name_len = strlen(refname);
1593 13b2bc37 2022-10-23 stsp 
1594 13b2bc37 2022-10-23 stsp 	ng_err = got_error_fmt(GOT_ERR_REF_BUSY, "%s", reason);
1595 13b2bc37 2022-10-23 stsp 	ing.reason_len = strlen(ng_err->msg);
1596 13b2bc37 2022-10-23 stsp 
1597 13b2bc37 2022-10-23 stsp 	len = sizeof(ing) + ing.name_len + ing.reason_len;
1598 13b2bc37 2022-10-23 stsp 	wbuf = imsg_create(&client->iev.ibuf, GOTD_IMSG_REF_UPDATE_NG,
1599 13b2bc37 2022-10-23 stsp 	    PROC_GOTD, gotd.pid, len);
1600 13b2bc37 2022-10-23 stsp 	if (wbuf == NULL)
1601 13b2bc37 2022-10-23 stsp 		return got_error_from_errno("imsg_create REF_UPDATE_NG");
1602 13b2bc37 2022-10-23 stsp 
1603 13b2bc37 2022-10-23 stsp 	if (imsg_add(wbuf, &ing, sizeof(ing)) == -1)
1604 13b2bc37 2022-10-23 stsp 		return got_error_from_errno("imsg_add REF_UPDATE_NG");
1605 13b2bc37 2022-10-23 stsp 	if (imsg_add(wbuf, refname, ing.name_len) == -1)
1606 13b2bc37 2022-10-23 stsp 		return got_error_from_errno("imsg_add REF_UPDATE_NG");
1607 13b2bc37 2022-10-23 stsp 	if (imsg_add(wbuf, ng_err->msg, ing.reason_len) == -1)
1608 13b2bc37 2022-10-23 stsp 		return got_error_from_errno("imsg_add REF_UPDATE_NG");
1609 13b2bc37 2022-10-23 stsp 
1610 13b2bc37 2022-10-23 stsp 	wbuf->fd = -1;
1611 13b2bc37 2022-10-23 stsp 	imsg_close(&client->iev.ibuf, wbuf);
1612 13b2bc37 2022-10-23 stsp 	gotd_imsg_event_add(&client->iev);
1613 13b2bc37 2022-10-23 stsp 	return NULL;
1614 13b2bc37 2022-10-23 stsp }
1615 13b2bc37 2022-10-23 stsp 
1616 13b2bc37 2022-10-23 stsp static const struct got_error *
1617 13b2bc37 2022-10-23 stsp install_pack(struct gotd_client *client, const char *repo_path,
1618 13b2bc37 2022-10-23 stsp     struct imsg *imsg)
1619 13b2bc37 2022-10-23 stsp {
1620 13b2bc37 2022-10-23 stsp 	const struct got_error *err = NULL;
1621 13b2bc37 2022-10-23 stsp 	struct gotd_imsg_packfile_install inst;
1622 13b2bc37 2022-10-23 stsp 	char hex[SHA1_DIGEST_STRING_LENGTH];
1623 13b2bc37 2022-10-23 stsp 	size_t datalen;
1624 13b2bc37 2022-10-23 stsp 	char *packfile_path = NULL, *packidx_path = NULL;
1625 13b2bc37 2022-10-23 stsp 
1626 13b2bc37 2022-10-23 stsp 	datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
1627 13b2bc37 2022-10-23 stsp 	if (datalen != sizeof(inst))
1628 13b2bc37 2022-10-23 stsp 		return got_error(GOT_ERR_PRIVSEP_LEN);
1629 13b2bc37 2022-10-23 stsp 	memcpy(&inst, imsg->data, sizeof(inst));
1630 13b2bc37 2022-10-23 stsp 
1631 13b2bc37 2022-10-23 stsp 	if (client->packfile_path == NULL)
1632 13b2bc37 2022-10-23 stsp 		return got_error_msg(GOT_ERR_BAD_REQUEST,
1633 13b2bc37 2022-10-23 stsp 		    "client has no pack file");
1634 13b2bc37 2022-10-23 stsp 	if (client->packidx_path == NULL)
1635 13b2bc37 2022-10-23 stsp 		return got_error_msg(GOT_ERR_BAD_REQUEST,
1636 13b2bc37 2022-10-23 stsp 		    "client has no pack file index");
1637 13b2bc37 2022-10-23 stsp 
1638 13b2bc37 2022-10-23 stsp 	if (got_sha1_digest_to_str(inst.pack_sha1, hex, sizeof(hex)) == NULL)
1639 13b2bc37 2022-10-23 stsp 		return got_error_msg(GOT_ERR_NO_SPACE,
1640 13b2bc37 2022-10-23 stsp 		    "could not convert pack file SHA1 to hex");
1641 13b2bc37 2022-10-23 stsp 
1642 13b2bc37 2022-10-23 stsp 	if (asprintf(&packfile_path, "/%s/%s/pack-%s.pack",
1643 13b2bc37 2022-10-23 stsp 	    repo_path, GOT_OBJECTS_PACK_DIR, hex) == -1) {
1644 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("asprintf");
1645 13b2bc37 2022-10-23 stsp 		goto done;
1646 13b2bc37 2022-10-23 stsp 	}
1647 13b2bc37 2022-10-23 stsp 
1648 13b2bc37 2022-10-23 stsp 	if (asprintf(&packidx_path, "/%s/%s/pack-%s.idx",
1649 13b2bc37 2022-10-23 stsp 	    repo_path, GOT_OBJECTS_PACK_DIR, hex) == -1) {
1650 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno("asprintf");
1651 13b2bc37 2022-10-23 stsp 		goto done;
1652 13b2bc37 2022-10-23 stsp 	}
1653 13b2bc37 2022-10-23 stsp 
1654 13b2bc37 2022-10-23 stsp 	if (rename(client->packfile_path, packfile_path) == -1) {
1655 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno3("rename", client->packfile_path,
1656 13b2bc37 2022-10-23 stsp 		    packfile_path);
1657 13b2bc37 2022-10-23 stsp 		goto done;
1658 13b2bc37 2022-10-23 stsp 	}
1659 13b2bc37 2022-10-23 stsp 
1660 13b2bc37 2022-10-23 stsp 	free(client->packfile_path);
1661 13b2bc37 2022-10-23 stsp 	client->packfile_path = NULL;
1662 13b2bc37 2022-10-23 stsp 
1663 13b2bc37 2022-10-23 stsp 	if (rename(client->packidx_path, packidx_path) == -1) {
1664 13b2bc37 2022-10-23 stsp 		err = got_error_from_errno3("rename", client->packidx_path,
1665 13b2bc37 2022-10-23 stsp 		    packidx_path);
1666 13b2bc37 2022-10-23 stsp 		goto done;
1667 13b2bc37 2022-10-23 stsp 	}
1668 13b2bc37 2022-10-23 stsp 
1669 13b2bc37 2022-10-23 stsp 	free(client->packidx_path);
1670 13b2bc37 2022-10-23 stsp 	client->packidx_path = NULL;
1671 13b2bc37 2022-10-23 stsp done:
1672 13b2bc37 2022-10-23 stsp 	free(packfile_path);
1673 13b2bc37 2022-10-23 stsp 	free(packidx_path);
1674 13b2bc37 2022-10-23 stsp 	return err;
1675 13b2bc37 2022-10-23 stsp }
1676 13b2bc37 2022-10-23 stsp 
1677 13b2bc37 2022-10-23 stsp static const struct got_error *
1678 13b2bc37 2022-10-23 stsp begin_ref_updates(struct gotd_client *client, struct imsg *imsg)
1679 13b2bc37 2022-10-23 stsp {
1680 13b2bc37 2022-10-23 stsp 	struct gotd_imsg_ref_updates_start istart;
1681 13b2bc37 2022-10-23 stsp 	size_t datalen;
1682 13b2bc37 2022-10-23 stsp 
1683 13b2bc37 2022-10-23 stsp 	if (client->nref_updates != -1)
1684 13b2bc37 2022-10-23 stsp 		return got_error(GOT_ERR_PRIVSEP_MSG);
1685 13b2bc37 2022-10-23 stsp 
1686 13b2bc37 2022-10-23 stsp 	datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
1687 13b2bc37 2022-10-23 stsp 	if (datalen != sizeof(istart))
1688 13b2bc37 2022-10-23 stsp 		return got_error(GOT_ERR_PRIVSEP_LEN);
1689 13b2bc37 2022-10-23 stsp 	memcpy(&istart, imsg->data, sizeof(istart));
1690 13b2bc37 2022-10-23 stsp 
1691 13b2bc37 2022-10-23 stsp 	if (istart.nref_updates <= 0)
1692 13b2bc37 2022-10-23 stsp 		return got_error(GOT_ERR_PRIVSEP_MSG);
1693 13b2bc37 2022-10-23 stsp 
1694 13b2bc37 2022-10-23 stsp 	client->nref_updates = istart.nref_updates;
1695 13b2bc37 2022-10-23 stsp 	return NULL;
1696 13b2bc37 2022-10-23 stsp }
1697 13b2bc37 2022-10-23 stsp 
1698 13b2bc37 2022-10-23 stsp static const struct got_error *
1699 13b2bc37 2022-10-23 stsp update_ref(struct gotd_client *client, const char *repo_path,
1700 13b2bc37 2022-10-23 stsp     struct imsg *imsg)
1701 13b2bc37 2022-10-23 stsp {
1702 13b2bc37 2022-10-23 stsp 	const struct got_error *err = NULL;
1703 13b2bc37 2022-10-23 stsp 	struct got_repository *repo = NULL;
1704 13b2bc37 2022-10-23 stsp 	struct got_reference *ref = NULL;
1705 13b2bc37 2022-10-23 stsp 	struct gotd_imsg_ref_update iref;
1706 13b2bc37 2022-10-23 stsp 	struct got_object_id old_id, new_id;
1707 13b2bc37 2022-10-23 stsp 	struct got_object_id *id = NULL;
1708 13b2bc37 2022-10-23 stsp 	struct got_object *obj = NULL;
1709 13b2bc37 2022-10-23 stsp 	char *refname = NULL;
1710 13b2bc37 2022-10-23 stsp 	size_t datalen;
1711 13b2bc37 2022-10-23 stsp 	int locked = 0;
1712 13b2bc37 2022-10-23 stsp 
1713 13b2bc37 2022-10-23 stsp 	log_debug("update-ref from uid %d", client->euid);
1714 13b2bc37 2022-10-23 stsp 
1715 13b2bc37 2022-10-23 stsp 	if (client->nref_updates <= 0)
1716 13b2bc37 2022-10-23 stsp 		return got_error(GOT_ERR_PRIVSEP_MSG);
1717 13b2bc37 2022-10-23 stsp 
1718 13b2bc37 2022-10-23 stsp 	datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
1719 13b2bc37 2022-10-23 stsp 	if (datalen < sizeof(iref))
1720 13b2bc37 2022-10-23 stsp 		return got_error(GOT_ERR_PRIVSEP_LEN);
1721 13b2bc37 2022-10-23 stsp 	memcpy(&iref, imsg->data, sizeof(iref));
1722 13b2bc37 2022-10-23 stsp 	if (datalen != sizeof(iref) + iref.name_len)
1723 13b2bc37 2022-10-23 stsp 		return got_error(GOT_ERR_PRIVSEP_LEN);
1724 13b2bc37 2022-10-23 stsp 	refname = malloc(iref.name_len + 1);
1725 13b2bc37 2022-10-23 stsp 	if (refname == NULL)
1726 13b2bc37 2022-10-23 stsp 		return got_error_from_errno("malloc");
1727 13b2bc37 2022-10-23 stsp 	memcpy(refname, imsg->data + sizeof(iref), iref.name_len);
1728 13b2bc37 2022-10-23 stsp 	refname[iref.name_len] = '\0';
1729 13b2bc37 2022-10-23 stsp 
1730 13b2bc37 2022-10-23 stsp 	log_debug("updating ref %s for uid %d", refname, client->euid);
1731 13b2bc37 2022-10-23 stsp 
1732 13b2bc37 2022-10-23 stsp 	err = got_repo_open(&repo, repo_path, NULL, NULL);
1733 13b2bc37 2022-10-23 stsp 	if (err)
1734 13b2bc37 2022-10-23 stsp 		goto done;
1735 13b2bc37 2022-10-23 stsp 
1736 13b2bc37 2022-10-23 stsp 	memcpy(old_id.sha1, iref.old_id, SHA1_DIGEST_LENGTH);
1737 13b2bc37 2022-10-23 stsp 	memcpy(new_id.sha1, iref.new_id, SHA1_DIGEST_LENGTH);
1738 13b2bc37 2022-10-23 stsp 	err = got_object_open(&obj, repo, &new_id);
1739 13b2bc37 2022-10-23 stsp 	if (err)
1740 13b2bc37 2022-10-23 stsp 		goto done;
1741 13b2bc37 2022-10-23 stsp 
1742 13b2bc37 2022-10-23 stsp 	if (iref.ref_is_new) {
1743 13b2bc37 2022-10-23 stsp 		err = got_ref_open(&ref, repo, refname, 0);
1744 13b2bc37 2022-10-23 stsp 		if (err) {
1745 13b2bc37 2022-10-23 stsp 			if (err->code != GOT_ERR_NOT_REF)
1746 13b2bc37 2022-10-23 stsp 				goto done;
1747 13b2bc37 2022-10-23 stsp 			err = got_ref_alloc(&ref, refname, &new_id);
1748 13b2bc37 2022-10-23 stsp 			if (err)
1749 13b2bc37 2022-10-23 stsp 				goto done;
1750 13b2bc37 2022-10-23 stsp 			err = got_ref_write(ref, repo); /* will lock/unlock */
1751 13b2bc37 2022-10-23 stsp 			if (err)
1752 13b2bc37 2022-10-23 stsp 				goto done;
1753 13b2bc37 2022-10-23 stsp 		} else {
1754 13b2bc37 2022-10-23 stsp 			err = got_error_fmt(GOT_ERR_REF_BUSY,
1755 13b2bc37 2022-10-23 stsp 			    "%s has been created by someone else "
1756 13b2bc37 2022-10-23 stsp 			    "while transaction was in progress",
1757 13b2bc37 2022-10-23 stsp 			    got_ref_get_name(ref));
1758 13b2bc37 2022-10-23 stsp 			goto done;
1759 13b2bc37 2022-10-23 stsp 		}
1760 13b2bc37 2022-10-23 stsp 	} else {
1761 13b2bc37 2022-10-23 stsp 		err = got_ref_open(&ref, repo, refname, 1 /* lock */);
1762 13b2bc37 2022-10-23 stsp 		if (err)
1763 13b2bc37 2022-10-23 stsp 			goto done;
1764 13b2bc37 2022-10-23 stsp 		locked = 1;
1765 13b2bc37 2022-10-23 stsp 
1766 13b2bc37 2022-10-23 stsp 		err = got_ref_resolve(&id, repo, ref);
1767 13b2bc37 2022-10-23 stsp 		if (err)
1768 13b2bc37 2022-10-23 stsp 			goto done;
1769 13b2bc37 2022-10-23 stsp 
1770 13b2bc37 2022-10-23 stsp 		if (got_object_id_cmp(id, &old_id) != 0) {
1771 13b2bc37 2022-10-23 stsp 			err = got_error_fmt(GOT_ERR_REF_BUSY,
1772 13b2bc37 2022-10-23 stsp 			    "%s has been modified by someone else "
1773 13b2bc37 2022-10-23 stsp 			    "while transaction was in progress",
1774 13b2bc37 2022-10-23 stsp 			    got_ref_get_name(ref));
1775 13b2bc37 2022-10-23 stsp 			goto done;
1776 13b2bc37 2022-10-23 stsp 		}
1777 13b2bc37 2022-10-23 stsp 
1778 13b2bc37 2022-10-23 stsp 		err = got_ref_change_ref(ref, &new_id);
1779 13b2bc37 2022-10-23 stsp 		if (err)
1780 13b2bc37 2022-10-23 stsp 			goto done;
1781 13b2bc37 2022-10-23 stsp 
1782 13b2bc37 2022-10-23 stsp 		err = got_ref_write(ref, repo);
1783 13b2bc37 2022-10-23 stsp 		if (err)
1784 13b2bc37 2022-10-23 stsp 			goto done;
1785 13b2bc37 2022-10-23 stsp 
1786 13b2bc37 2022-10-23 stsp 		free(id);
1787 13b2bc37 2022-10-23 stsp 		id = NULL;
1788 13b2bc37 2022-10-23 stsp 	}
1789 13b2bc37 2022-10-23 stsp done:
1790 13b2bc37 2022-10-23 stsp 	if (err) {
1791 13b2bc37 2022-10-23 stsp 		if (err->code == GOT_ERR_LOCKFILE_TIMEOUT) {
1792 13b2bc37 2022-10-23 stsp 			err = got_error_fmt(GOT_ERR_LOCKFILE_TIMEOUT,
1793 13b2bc37 2022-10-23 stsp 			    "could not acquire exclusive file lock for %s",
1794 13b2bc37 2022-10-23 stsp 			    refname);
1795 13b2bc37 2022-10-23 stsp 		}
1796 13b2bc37 2022-10-23 stsp 		send_ref_update_ng(client, &iref, refname, err->msg);
1797 13b2bc37 2022-10-23 stsp 	} else
1798 13b2bc37 2022-10-23 stsp 		send_ref_update_ok(client, &iref, refname);
1799 13b2bc37 2022-10-23 stsp 
1800 13b2bc37 2022-10-23 stsp 	if (client->nref_updates > 0) {
1801 13b2bc37 2022-10-23 stsp 		client->nref_updates--;
1802 13b2bc37 2022-10-23 stsp 		if (client->nref_updates == 0)
1803 13b2bc37 2022-10-23 stsp 			send_refs_updated(client);
1804 13b2bc37 2022-10-23 stsp 
1805 13b2bc37 2022-10-23 stsp 	}
1806 13b2bc37 2022-10-23 stsp 	if (locked) {
1807 13b2bc37 2022-10-23 stsp 		const struct got_error *unlock_err;
1808 13b2bc37 2022-10-23 stsp 		unlock_err = got_ref_unlock(ref);
1809 13b2bc37 2022-10-23 stsp 		if (unlock_err && err == NULL)
1810 13b2bc37 2022-10-23 stsp 			err = unlock_err;
1811 13b2bc37 2022-10-23 stsp 	}
1812 13b2bc37 2022-10-23 stsp 	if (ref)
1813 13b2bc37 2022-10-23 stsp 		got_ref_close(ref);
1814 13b2bc37 2022-10-23 stsp 	if (obj)
1815 13b2bc37 2022-10-23 stsp 		got_object_close(obj);
1816 13b2bc37 2022-10-23 stsp 	if (repo)
1817 13b2bc37 2022-10-23 stsp 		got_repo_close(repo);
1818 13b2bc37 2022-10-23 stsp 	free(refname);
1819 13b2bc37 2022-10-23 stsp 	free(id);
1820 13b2bc37 2022-10-23 stsp 	return err;
1821 13b2bc37 2022-10-23 stsp }
1822 13b2bc37 2022-10-23 stsp 
1823 13b2bc37 2022-10-23 stsp static void
1824 b50a2b46 2022-12-29 stsp gotd_dispatch_listener(int fd, short event, void *arg)
1825 13b2bc37 2022-10-23 stsp {
1826 13b2bc37 2022-10-23 stsp 	struct gotd_imsgev *iev = arg;
1827 13b2bc37 2022-10-23 stsp 	struct imsgbuf *ibuf = &iev->ibuf;
1828 b50a2b46 2022-12-29 stsp 	struct gotd_child_proc *proc = &gotd.listen_proc;
1829 b50a2b46 2022-12-29 stsp 	ssize_t n;
1830 b50a2b46 2022-12-29 stsp 	int shut = 0;
1831 b50a2b46 2022-12-29 stsp 	struct imsg imsg;
1832 b50a2b46 2022-12-29 stsp 
1833 b50a2b46 2022-12-29 stsp 	if (proc->iev.ibuf.fd != fd)
1834 b50a2b46 2022-12-29 stsp 		fatalx("%s: unexpected fd %d", __func__, fd);
1835 b50a2b46 2022-12-29 stsp 
1836 b50a2b46 2022-12-29 stsp 	if (event & EV_READ) {
1837 b50a2b46 2022-12-29 stsp 		if ((n = imsg_read(ibuf)) == -1 && errno != EAGAIN)
1838 b50a2b46 2022-12-29 stsp 			fatal("imsg_read error");
1839 b50a2b46 2022-12-29 stsp 		if (n == 0) {
1840 b50a2b46 2022-12-29 stsp 			/* Connection closed. */
1841 b50a2b46 2022-12-29 stsp 			shut = 1;
1842 b50a2b46 2022-12-29 stsp 			goto done;
1843 b50a2b46 2022-12-29 stsp 		}
1844 b50a2b46 2022-12-29 stsp 	}
1845 b50a2b46 2022-12-29 stsp 
1846 b50a2b46 2022-12-29 stsp 	if (event & EV_WRITE) {
1847 b50a2b46 2022-12-29 stsp 		n = msgbuf_write(&ibuf->w);
1848 b50a2b46 2022-12-29 stsp 		if (n == -1 && errno != EAGAIN)
1849 b50a2b46 2022-12-29 stsp 			fatal("msgbuf_write");
1850 b50a2b46 2022-12-29 stsp 		if (n == 0) {
1851 b50a2b46 2022-12-29 stsp 			/* Connection closed. */
1852 b50a2b46 2022-12-29 stsp 			shut = 1;
1853 b50a2b46 2022-12-29 stsp 			goto done;
1854 b50a2b46 2022-12-29 stsp 		}
1855 b50a2b46 2022-12-29 stsp 	}
1856 b50a2b46 2022-12-29 stsp 
1857 b50a2b46 2022-12-29 stsp 	for (;;) {
1858 b50a2b46 2022-12-29 stsp 		const struct got_error *err = NULL;
1859 b50a2b46 2022-12-29 stsp 		struct gotd_client *client = NULL;
1860 b50a2b46 2022-12-29 stsp 		uint32_t client_id = 0;
1861 b50a2b46 2022-12-29 stsp 		int do_disconnect = 0;
1862 b50a2b46 2022-12-29 stsp 
1863 b50a2b46 2022-12-29 stsp 		if ((n = imsg_get(ibuf, &imsg)) == -1)
1864 b50a2b46 2022-12-29 stsp 			fatal("%s: imsg_get error", __func__);
1865 b50a2b46 2022-12-29 stsp 		if (n == 0)	/* No more messages. */
1866 b50a2b46 2022-12-29 stsp 			break;
1867 b50a2b46 2022-12-29 stsp 
1868 b50a2b46 2022-12-29 stsp 		switch (imsg.hdr.type) {
1869 b50a2b46 2022-12-29 stsp 		case GOTD_IMSG_ERROR:
1870 b50a2b46 2022-12-29 stsp 			do_disconnect = 1;
1871 b50a2b46 2022-12-29 stsp 			err = gotd_imsg_recv_error(&client_id, &imsg);
1872 b50a2b46 2022-12-29 stsp 			break;
1873 b50a2b46 2022-12-29 stsp 		case GOTD_IMSG_CONNECT:
1874 b50a2b46 2022-12-29 stsp 			err = recv_connect(&client_id, &imsg);
1875 b50a2b46 2022-12-29 stsp 			break;
1876 b50a2b46 2022-12-29 stsp 		default:
1877 b50a2b46 2022-12-29 stsp 			log_debug("unexpected imsg %d", imsg.hdr.type);
1878 b50a2b46 2022-12-29 stsp 			break;
1879 b50a2b46 2022-12-29 stsp 		}
1880 b50a2b46 2022-12-29 stsp 
1881 b50a2b46 2022-12-29 stsp 		client = find_client(client_id);
1882 b50a2b46 2022-12-29 stsp 		if (client == NULL) {
1883 b50a2b46 2022-12-29 stsp 			log_warnx("%s: client not found", __func__);
1884 b50a2b46 2022-12-29 stsp 			imsg_free(&imsg);
1885 b50a2b46 2022-12-29 stsp 			continue;
1886 b50a2b46 2022-12-29 stsp 		}
1887 b50a2b46 2022-12-29 stsp 
1888 b50a2b46 2022-12-29 stsp 		if (err)
1889 b50a2b46 2022-12-29 stsp 			log_warnx("uid %d: %s", client->euid, err->msg);
1890 b50a2b46 2022-12-29 stsp 
1891 b50a2b46 2022-12-29 stsp 		if (do_disconnect) {
1892 b50a2b46 2022-12-29 stsp 			if (err)
1893 b50a2b46 2022-12-29 stsp 				disconnect_on_error(client, err);
1894 b50a2b46 2022-12-29 stsp 			else
1895 b50a2b46 2022-12-29 stsp 				disconnect(client);
1896 b50a2b46 2022-12-29 stsp 		}
1897 b50a2b46 2022-12-29 stsp 
1898 b50a2b46 2022-12-29 stsp 		imsg_free(&imsg);
1899 b50a2b46 2022-12-29 stsp 	}
1900 b50a2b46 2022-12-29 stsp done:
1901 b50a2b46 2022-12-29 stsp 	if (!shut) {
1902 b50a2b46 2022-12-29 stsp 		gotd_imsg_event_add(iev);
1903 b50a2b46 2022-12-29 stsp 	} else {
1904 b50a2b46 2022-12-29 stsp 		/* This pipe is dead. Remove its event handler */
1905 b50a2b46 2022-12-29 stsp 		event_del(&iev->ev);
1906 b50a2b46 2022-12-29 stsp 		event_loopexit(NULL);
1907 b50a2b46 2022-12-29 stsp 	}
1908 b50a2b46 2022-12-29 stsp }
1909 b50a2b46 2022-12-29 stsp 
1910 b50a2b46 2022-12-29 stsp static void
1911 b50a2b46 2022-12-29 stsp gotd_dispatch_repo_child(int fd, short event, void *arg)
1912 b50a2b46 2022-12-29 stsp {
1913 b50a2b46 2022-12-29 stsp 	struct gotd_imsgev *iev = arg;
1914 b50a2b46 2022-12-29 stsp 	struct imsgbuf *ibuf = &iev->ibuf;
1915 13b2bc37 2022-10-23 stsp 	struct gotd_child_proc *proc = NULL;
1916 b50a2b46 2022-12-29 stsp 	struct gotd_client *client = NULL;
1917 13b2bc37 2022-10-23 stsp 	ssize_t n;
1918 13b2bc37 2022-10-23 stsp 	int shut = 0;
1919 13b2bc37 2022-10-23 stsp 	struct imsg imsg;
1920 13b2bc37 2022-10-23 stsp 
1921 13b2bc37 2022-10-23 stsp 	if (event & EV_READ) {
1922 13b2bc37 2022-10-23 stsp 		if ((n = imsg_read(ibuf)) == -1 && errno != EAGAIN)
1923 13b2bc37 2022-10-23 stsp 			fatal("imsg_read error");
1924 13b2bc37 2022-10-23 stsp 		if (n == 0) {
1925 13b2bc37 2022-10-23 stsp 			/* Connection closed. */
1926 13b2bc37 2022-10-23 stsp 			shut = 1;
1927 13b2bc37 2022-10-23 stsp 			goto done;
1928 13b2bc37 2022-10-23 stsp 		}
1929 13b2bc37 2022-10-23 stsp 	}
1930 13b2bc37 2022-10-23 stsp 
1931 13b2bc37 2022-10-23 stsp 	if (event & EV_WRITE) {
1932 13b2bc37 2022-10-23 stsp 		n = msgbuf_write(&ibuf->w);
1933 13b2bc37 2022-10-23 stsp 		if (n == -1 && errno != EAGAIN)
1934 13b2bc37 2022-10-23 stsp 			fatal("msgbuf_write");
1935 13b2bc37 2022-10-23 stsp 		if (n == 0) {
1936 13b2bc37 2022-10-23 stsp 			/* Connection closed. */
1937 13b2bc37 2022-10-23 stsp 			shut = 1;
1938 13b2bc37 2022-10-23 stsp 			goto done;
1939 13b2bc37 2022-10-23 stsp 		}
1940 13b2bc37 2022-10-23 stsp 	}
1941 13b2bc37 2022-10-23 stsp 
1942 b50a2b46 2022-12-29 stsp 	client = find_client_by_proc_fd(fd);
1943 b50a2b46 2022-12-29 stsp 	if (client == NULL)
1944 b50a2b46 2022-12-29 stsp 		fatalx("cannot find client for fd %d", fd);
1945 b50a2b46 2022-12-29 stsp 
1946 b50a2b46 2022-12-29 stsp 	proc = get_client_proc(client);
1947 13b2bc37 2022-10-23 stsp 	if (proc == NULL)
1948 13b2bc37 2022-10-23 stsp 		fatalx("cannot find child process for fd %d", fd);
1949 13b2bc37 2022-10-23 stsp 
1950 13b2bc37 2022-10-23 stsp 	for (;;) {
1951 13b2bc37 2022-10-23 stsp 		const struct got_error *err = NULL;
1952 13b2bc37 2022-10-23 stsp 		uint32_t client_id = 0;
1953 13b2bc37 2022-10-23 stsp 		int do_disconnect = 0;
1954 b50a2b46 2022-12-29 stsp 		int do_list_refs = 0, do_ref_updates = 0, do_ref_update = 0;
1955 13b2bc37 2022-10-23 stsp 		int do_packfile_install = 0;
1956 13b2bc37 2022-10-23 stsp 
1957 13b2bc37 2022-10-23 stsp 		if ((n = imsg_get(ibuf, &imsg)) == -1)
1958 13b2bc37 2022-10-23 stsp 			fatal("%s: imsg_get error", __func__);
1959 13b2bc37 2022-10-23 stsp 		if (n == 0)	/* No more messages. */
1960 13b2bc37 2022-10-23 stsp 			break;
1961 13b2bc37 2022-10-23 stsp 
1962 13b2bc37 2022-10-23 stsp 		switch (imsg.hdr.type) {
1963 13b2bc37 2022-10-23 stsp 		case GOTD_IMSG_ERROR:
1964 13b2bc37 2022-10-23 stsp 			do_disconnect = 1;
1965 13b2bc37 2022-10-23 stsp 			err = gotd_imsg_recv_error(&client_id, &imsg);
1966 13b2bc37 2022-10-23 stsp 			break;
1967 b50a2b46 2022-12-29 stsp 		case GOTD_IMSG_REPO_CHILD_READY:
1968 b50a2b46 2022-12-29 stsp 			do_list_refs = 1;
1969 d93ecf7d 2022-12-14 stsp 			break;
1970 13b2bc37 2022-10-23 stsp 		case GOTD_IMSG_PACKFILE_DONE:
1971 13b2bc37 2022-10-23 stsp 			do_disconnect = 1;
1972 13b2bc37 2022-10-23 stsp 			err = recv_packfile_done(&client_id, &imsg);
1973 13b2bc37 2022-10-23 stsp 			break;
1974 13b2bc37 2022-10-23 stsp 		case GOTD_IMSG_PACKFILE_INSTALL:
1975 13b2bc37 2022-10-23 stsp 			err = recv_packfile_install(&client_id, &imsg);
1976 13b2bc37 2022-10-23 stsp 			if (err == NULL)
1977 13b2bc37 2022-10-23 stsp 				do_packfile_install = 1;
1978 13b2bc37 2022-10-23 stsp 			break;
1979 13b2bc37 2022-10-23 stsp 		case GOTD_IMSG_REF_UPDATES_START:
1980 13b2bc37 2022-10-23 stsp 			err = recv_ref_updates_start(&client_id, &imsg);
1981 13b2bc37 2022-10-23 stsp 			if (err == NULL)
1982 13b2bc37 2022-10-23 stsp 				do_ref_updates = 1;
1983 13b2bc37 2022-10-23 stsp 			break;
1984 13b2bc37 2022-10-23 stsp 		case GOTD_IMSG_REF_UPDATE:
1985 13b2bc37 2022-10-23 stsp 			err = recv_ref_update(&client_id, &imsg);
1986 13b2bc37 2022-10-23 stsp 			if (err == NULL)
1987 13b2bc37 2022-10-23 stsp 				do_ref_update = 1;
1988 13b2bc37 2022-10-23 stsp 			break;
1989 13b2bc37 2022-10-23 stsp 		default:
1990 13b2bc37 2022-10-23 stsp 			log_debug("unexpected imsg %d", imsg.hdr.type);
1991 13b2bc37 2022-10-23 stsp 			break;
1992 13b2bc37 2022-10-23 stsp 		}
1993 13b2bc37 2022-10-23 stsp 
1994 13b2bc37 2022-10-23 stsp 		if (!verify_imsg_src(client, proc, &imsg)) {
1995 13b2bc37 2022-10-23 stsp 			log_debug("dropping imsg type %d from PID %d",
1996 13b2bc37 2022-10-23 stsp 			    imsg.hdr.type, proc->pid);
1997 13b2bc37 2022-10-23 stsp 			imsg_free(&imsg);
1998 13b2bc37 2022-10-23 stsp 			continue;
1999 13b2bc37 2022-10-23 stsp 		}
2000 13b2bc37 2022-10-23 stsp 		if (err)
2001 13b2bc37 2022-10-23 stsp 			log_warnx("uid %d: %s", client->euid, err->msg);
2002 13b2bc37 2022-10-23 stsp 
2003 13b2bc37 2022-10-23 stsp 		if (do_disconnect) {
2004 13b2bc37 2022-10-23 stsp 			if (err)
2005 13b2bc37 2022-10-23 stsp 				disconnect_on_error(client, err);
2006 13b2bc37 2022-10-23 stsp 			else
2007 13b2bc37 2022-10-23 stsp 				disconnect(client);
2008 36c7cfbb 2022-11-04 stsp 		} else {
2009 b50a2b46 2022-12-29 stsp 			if (do_list_refs)
2010 b50a2b46 2022-12-29 stsp 				err = list_refs_request(client, iev);
2011 b50a2b46 2022-12-29 stsp 			else if (do_packfile_install)
2012 eec68231 2022-12-14 stsp 				err = install_pack(client, proc->repo_path,
2013 36c7cfbb 2022-11-04 stsp 				    &imsg);
2014 36c7cfbb 2022-11-04 stsp 			else if (do_ref_updates)
2015 36c7cfbb 2022-11-04 stsp 				err = begin_ref_updates(client, &imsg);
2016 36c7cfbb 2022-11-04 stsp 			else if (do_ref_update)
2017 eec68231 2022-12-14 stsp 				err = update_ref(client, proc->repo_path,
2018 36c7cfbb 2022-11-04 stsp 				    &imsg);
2019 36c7cfbb 2022-11-04 stsp 			if (err)
2020 36c7cfbb 2022-11-04 stsp 				log_warnx("uid %d: %s", client->euid, err->msg);
2021 36c7cfbb 2022-11-04 stsp 		}
2022 13b2bc37 2022-10-23 stsp 		imsg_free(&imsg);
2023 13b2bc37 2022-10-23 stsp 	}
2024 13b2bc37 2022-10-23 stsp done:
2025 13b2bc37 2022-10-23 stsp 	if (!shut) {
2026 13b2bc37 2022-10-23 stsp 		gotd_imsg_event_add(iev);
2027 13b2bc37 2022-10-23 stsp 	} else {
2028 13b2bc37 2022-10-23 stsp 		/* This pipe is dead. Remove its event handler */
2029 13b2bc37 2022-10-23 stsp 		event_del(&iev->ev);
2030 13b2bc37 2022-10-23 stsp 		event_loopexit(NULL);
2031 13b2bc37 2022-10-23 stsp 	}
2032 13b2bc37 2022-10-23 stsp }
2033 13b2bc37 2022-10-23 stsp 
2034 13b2bc37 2022-10-23 stsp static pid_t
2035 eec68231 2022-12-14 stsp start_child(enum gotd_procid proc_id, const char *repo_path,
2036 585362fd 2022-10-31 op     char *argv0, const char *confpath, int fd, int daemonize, int verbosity)
2037 13b2bc37 2022-10-23 stsp {
2038 585362fd 2022-10-31 op 	char	*argv[11];
2039 13b2bc37 2022-10-23 stsp 	int	 argc = 0;
2040 13b2bc37 2022-10-23 stsp 	pid_t	 pid;
2041 13b2bc37 2022-10-23 stsp 
2042 13b2bc37 2022-10-23 stsp 	switch (pid = fork()) {
2043 13b2bc37 2022-10-23 stsp 	case -1:
2044 13b2bc37 2022-10-23 stsp 		fatal("cannot fork");
2045 13b2bc37 2022-10-23 stsp 	case 0:
2046 13b2bc37 2022-10-23 stsp 		break;
2047 13b2bc37 2022-10-23 stsp 	default:
2048 13b2bc37 2022-10-23 stsp 		close(fd);
2049 13b2bc37 2022-10-23 stsp 		return pid;
2050 13b2bc37 2022-10-23 stsp 	}
2051 13b2bc37 2022-10-23 stsp 
2052 8c6fc146 2022-11-17 stsp 	if (fd != GOTD_FILENO_MSG_PIPE) {
2053 8c6fc146 2022-11-17 stsp 		if (dup2(fd, GOTD_FILENO_MSG_PIPE) == -1)
2054 13b2bc37 2022-10-23 stsp 			fatal("cannot setup imsg fd");
2055 13b2bc37 2022-10-23 stsp 	} else if (fcntl(fd, F_SETFD, 0) == -1)
2056 13b2bc37 2022-10-23 stsp 		fatal("cannot setup imsg fd");
2057 13b2bc37 2022-10-23 stsp 
2058 13b2bc37 2022-10-23 stsp 	argv[argc++] = argv0;
2059 13b2bc37 2022-10-23 stsp 	switch (proc_id) {
2060 d93ecf7d 2022-12-14 stsp 	case PROC_LISTEN:
2061 d93ecf7d 2022-12-14 stsp 		argv[argc++] = (char *)"-L";
2062 d93ecf7d 2022-12-14 stsp 		break;
2063 13b2bc37 2022-10-23 stsp 	case PROC_REPO_READ:
2064 13b2bc37 2022-10-23 stsp 		argv[argc++] = (char *)"-R";
2065 13b2bc37 2022-10-23 stsp 		break;
2066 13b2bc37 2022-10-23 stsp 	case PROC_REPO_WRITE:
2067 13b2bc37 2022-10-23 stsp 		argv[argc++] = (char *)"-W";
2068 13b2bc37 2022-10-23 stsp 		break;
2069 13b2bc37 2022-10-23 stsp 	default:
2070 13b2bc37 2022-10-23 stsp 		fatalx("invalid process id %d", proc_id);
2071 13b2bc37 2022-10-23 stsp 	}
2072 13b2bc37 2022-10-23 stsp 
2073 585362fd 2022-10-31 op 	argv[argc++] = (char *)"-f";
2074 585362fd 2022-10-31 op 	argv[argc++] = (char *)confpath;
2075 585362fd 2022-10-31 op 
2076 eec68231 2022-12-14 stsp 	if (repo_path) {
2077 d93ecf7d 2022-12-14 stsp 		argv[argc++] = (char *)"-P";
2078 eec68231 2022-12-14 stsp 		argv[argc++] = (char *)repo_path;
2079 d93ecf7d 2022-12-14 stsp 	}
2080 13b2bc37 2022-10-23 stsp 
2081 13b2bc37 2022-10-23 stsp 	if (!daemonize)
2082 13b2bc37 2022-10-23 stsp 		argv[argc++] = (char *)"-d";
2083 13b2bc37 2022-10-23 stsp 	if (verbosity > 0)
2084 13b2bc37 2022-10-23 stsp 		argv[argc++] = (char *)"-v";
2085 13b2bc37 2022-10-23 stsp 	if (verbosity > 1)
2086 13b2bc37 2022-10-23 stsp 		argv[argc++] = (char *)"-v";
2087 13b2bc37 2022-10-23 stsp 	argv[argc++] = NULL;
2088 13b2bc37 2022-10-23 stsp 
2089 13b2bc37 2022-10-23 stsp 	execvp(argv0, argv);
2090 13b2bc37 2022-10-23 stsp 	fatal("execvp");
2091 13b2bc37 2022-10-23 stsp }
2092 13b2bc37 2022-10-23 stsp 
2093 13b2bc37 2022-10-23 stsp static void
2094 d93ecf7d 2022-12-14 stsp start_listener(char *argv0, const char *confpath, int daemonize, int verbosity)
2095 d93ecf7d 2022-12-14 stsp {
2096 b50a2b46 2022-12-29 stsp 	struct gotd_child_proc *proc = &gotd.listen_proc;
2097 d93ecf7d 2022-12-14 stsp 
2098 d93ecf7d 2022-12-14 stsp 	proc->type = PROC_LISTEN;
2099 d93ecf7d 2022-12-14 stsp 
2100 d93ecf7d 2022-12-14 stsp 	if (socketpair(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK,
2101 d93ecf7d 2022-12-14 stsp 	    PF_UNSPEC, proc->pipe) == -1)
2102 d93ecf7d 2022-12-14 stsp 		fatal("socketpair");
2103 d93ecf7d 2022-12-14 stsp 
2104 d93ecf7d 2022-12-14 stsp 	proc->pid = start_child(proc->type, NULL, argv0, confpath,
2105 d93ecf7d 2022-12-14 stsp 	    proc->pipe[1], daemonize, verbosity);
2106 d93ecf7d 2022-12-14 stsp 	imsg_init(&proc->iev.ibuf, proc->pipe[0]);
2107 b50a2b46 2022-12-29 stsp 	proc->iev.handler = gotd_dispatch_listener;
2108 d93ecf7d 2022-12-14 stsp 	proc->iev.events = EV_READ;
2109 d93ecf7d 2022-12-14 stsp 	proc->iev.handler_arg = NULL;
2110 d93ecf7d 2022-12-14 stsp }
2111 d93ecf7d 2022-12-14 stsp 
2112 b50a2b46 2022-12-29 stsp static const struct got_error *
2113 b50a2b46 2022-12-29 stsp start_repo_child(struct gotd_client *client, enum gotd_procid proc_type,
2114 b50a2b46 2022-12-29 stsp     struct gotd_repo *repo, char *argv0, const char *confpath,
2115 585362fd 2022-10-31 op     int daemonize, int verbosity)
2116 13b2bc37 2022-10-23 stsp {
2117 13b2bc37 2022-10-23 stsp 	struct gotd_child_proc *proc;
2118 13b2bc37 2022-10-23 stsp 
2119 b50a2b46 2022-12-29 stsp 	if (proc_type != PROC_REPO_READ && proc_type != PROC_REPO_WRITE)
2120 b50a2b46 2022-12-29 stsp 		return got_error_msg(GOT_ERR_NOT_IMPL, "bad process type");
2121 b50a2b46 2022-12-29 stsp 		
2122 b50a2b46 2022-12-29 stsp 	proc = calloc(1, sizeof(*proc));
2123 b50a2b46 2022-12-29 stsp 	if (proc == NULL)
2124 b50a2b46 2022-12-29 stsp 		return got_error_from_errno("calloc");
2125 13b2bc37 2022-10-23 stsp 
2126 b50a2b46 2022-12-29 stsp 	proc->type = proc_type;
2127 b50a2b46 2022-12-29 stsp 	if (strlcpy(proc->repo_name, repo->name,
2128 b50a2b46 2022-12-29 stsp 	    sizeof(proc->repo_name)) >= sizeof(proc->repo_name))
2129 b50a2b46 2022-12-29 stsp 		fatalx("repository name too long: %s", repo->name);
2130 b50a2b46 2022-12-29 stsp 	log_debug("starting %s for repository %s",
2131 b50a2b46 2022-12-29 stsp 	    proc->type == PROC_REPO_READ ? "reader" : "writer", repo->name);
2132 b50a2b46 2022-12-29 stsp 	if (realpath(repo->path, proc->repo_path) == NULL)
2133 b50a2b46 2022-12-29 stsp 		fatal("%s", repo->path);
2134 b50a2b46 2022-12-29 stsp 	if (socketpair(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK,
2135 b50a2b46 2022-12-29 stsp 	    PF_UNSPEC, proc->pipe) == -1)
2136 b50a2b46 2022-12-29 stsp 		fatal("socketpair");
2137 b50a2b46 2022-12-29 stsp 	proc->pid = start_child(proc->type, proc->repo_path, argv0,
2138 b50a2b46 2022-12-29 stsp 	    confpath, proc->pipe[1], daemonize, verbosity);
2139 b50a2b46 2022-12-29 stsp 	imsg_init(&proc->iev.ibuf, proc->pipe[0]);
2140 b50a2b46 2022-12-29 stsp 	log_debug("proc %s %s is on fd %d",
2141 b50a2b46 2022-12-29 stsp 	    gotd_proc_names[proc->type], proc->repo_path,
2142 b50a2b46 2022-12-29 stsp 	    proc->pipe[0]);
2143 b50a2b46 2022-12-29 stsp 	proc->iev.handler = gotd_dispatch_repo_child;
2144 b50a2b46 2022-12-29 stsp 	proc->iev.events = EV_READ;
2145 b50a2b46 2022-12-29 stsp 	proc->iev.handler_arg = NULL;
2146 b50a2b46 2022-12-29 stsp 	event_set(&proc->iev.ev, proc->iev.ibuf.fd, EV_READ,
2147 b50a2b46 2022-12-29 stsp 	    gotd_dispatch_repo_child, &proc->iev);
2148 b50a2b46 2022-12-29 stsp 	gotd_imsg_event_add(&proc->iev);
2149 b50a2b46 2022-12-29 stsp 
2150 b50a2b46 2022-12-29 stsp 	if (proc->type == PROC_REPO_READ)
2151 b50a2b46 2022-12-29 stsp 		client->repo_read = proc;
2152 b50a2b46 2022-12-29 stsp 	else
2153 b50a2b46 2022-12-29 stsp 		client->repo_write = proc;
2154 b50a2b46 2022-12-29 stsp 
2155 b50a2b46 2022-12-29 stsp 	return NULL;
2156 eec68231 2022-12-14 stsp }
2157 eec68231 2022-12-14 stsp 
2158 eec68231 2022-12-14 stsp static void
2159 eec68231 2022-12-14 stsp apply_unveil_repo_readonly(const char *repo_path)
2160 eec68231 2022-12-14 stsp {
2161 eec68231 2022-12-14 stsp 	if (unveil(repo_path, "r") == -1)
2162 eec68231 2022-12-14 stsp 		fatal("unveil %s", repo_path);
2163 eec68231 2022-12-14 stsp 
2164 eec68231 2022-12-14 stsp 	if (unveil(NULL, NULL) == -1)
2165 eec68231 2022-12-14 stsp 		fatal("unveil");
2166 13b2bc37 2022-10-23 stsp }
2167 13b2bc37 2022-10-23 stsp 
2168 13b2bc37 2022-10-23 stsp static void
2169 13b2bc37 2022-10-23 stsp apply_unveil(void)
2170 13b2bc37 2022-10-23 stsp {
2171 13b2bc37 2022-10-23 stsp 	struct gotd_repo *repo;
2172 13b2bc37 2022-10-23 stsp 
2173 b50a2b46 2022-12-29 stsp 	if (unveil(gotd.argv0, "x") == -1)
2174 b50a2b46 2022-12-29 stsp 		fatal("unveil %s", gotd.argv0);
2175 b50a2b46 2022-12-29 stsp 
2176 13b2bc37 2022-10-23 stsp 	TAILQ_FOREACH(repo, &gotd.repos, entry) {
2177 13b2bc37 2022-10-23 stsp 		if (unveil(repo->path, "rwc") == -1)
2178 13b2bc37 2022-10-23 stsp 			fatal("unveil %s", repo->path);
2179 13b2bc37 2022-10-23 stsp 	}
2180 13b2bc37 2022-10-23 stsp 
2181 13b2bc37 2022-10-23 stsp 	if (unveil(GOT_TMPDIR_STR, "rwc") == -1)
2182 13b2bc37 2022-10-23 stsp 		fatal("unveil %s", GOT_TMPDIR_STR);
2183 13b2bc37 2022-10-23 stsp 
2184 13b2bc37 2022-10-23 stsp 	if (unveil(NULL, NULL) == -1)
2185 13b2bc37 2022-10-23 stsp 		fatal("unveil");
2186 13b2bc37 2022-10-23 stsp }
2187 13b2bc37 2022-10-23 stsp 
2188 13b2bc37 2022-10-23 stsp int
2189 13b2bc37 2022-10-23 stsp main(int argc, char **argv)
2190 13b2bc37 2022-10-23 stsp {
2191 13b2bc37 2022-10-23 stsp 	const struct got_error *error = NULL;
2192 13b2bc37 2022-10-23 stsp 	int ch, fd = -1, daemonize = 1, verbosity = 0, noaction = 0;
2193 13b2bc37 2022-10-23 stsp 	const char *confpath = GOTD_CONF_PATH;
2194 13b2bc37 2022-10-23 stsp 	char *argv0 = argv[0];
2195 13b2bc37 2022-10-23 stsp 	char title[2048];
2196 ddbe612c 2022-11-17 stsp 	gid_t groups[NGROUPS_MAX];
2197 0ccf3acb 2022-11-16 stsp 	int ngroups = NGROUPS_MAX;
2198 13b2bc37 2022-10-23 stsp 	struct passwd *pw = NULL;
2199 13b2bc37 2022-10-23 stsp 	struct group *gr = NULL;
2200 13b2bc37 2022-10-23 stsp 	char *repo_path = NULL;
2201 13b2bc37 2022-10-23 stsp 	enum gotd_procid proc_id = PROC_GOTD;
2202 13b2bc37 2022-10-23 stsp 	struct event evsigint, evsigterm, evsighup, evsigusr1;
2203 13b2bc37 2022-10-23 stsp 	int *pack_fds = NULL, *temp_fds = NULL;
2204 13b2bc37 2022-10-23 stsp 
2205 13b2bc37 2022-10-23 stsp 	log_init(1, LOG_DAEMON); /* Log to stderr until daemonized. */
2206 13b2bc37 2022-10-23 stsp 
2207 d93ecf7d 2022-12-14 stsp 	while ((ch = getopt(argc, argv, "df:LnP:RvW")) != -1) {
2208 13b2bc37 2022-10-23 stsp 		switch (ch) {
2209 13b2bc37 2022-10-23 stsp 		case 'd':
2210 13b2bc37 2022-10-23 stsp 			daemonize = 0;
2211 13b2bc37 2022-10-23 stsp 			break;
2212 13b2bc37 2022-10-23 stsp 		case 'f':
2213 13b2bc37 2022-10-23 stsp 			confpath = optarg;
2214 13b2bc37 2022-10-23 stsp 			break;
2215 d93ecf7d 2022-12-14 stsp 		case 'L':
2216 d93ecf7d 2022-12-14 stsp 			proc_id = PROC_LISTEN;
2217 d93ecf7d 2022-12-14 stsp 			break;
2218 13b2bc37 2022-10-23 stsp 		case 'n':
2219 13b2bc37 2022-10-23 stsp 			noaction = 1;
2220 13b2bc37 2022-10-23 stsp 			break;
2221 6f319063 2022-10-27 stsp 		case 'P':
2222 6f319063 2022-10-27 stsp 			repo_path = realpath(optarg, NULL);
2223 6f319063 2022-10-27 stsp 			if (repo_path == NULL)
2224 6f319063 2022-10-27 stsp 				fatal("realpath '%s'", optarg);
2225 13b2bc37 2022-10-23 stsp 			break;
2226 13b2bc37 2022-10-23 stsp 		case 'R':
2227 13b2bc37 2022-10-23 stsp 			proc_id = PROC_REPO_READ;
2228 13b2bc37 2022-10-23 stsp 			break;
2229 6f319063 2022-10-27 stsp 		case 'v':
2230 6f319063 2022-10-27 stsp 			if (verbosity < 3)
2231 6f319063 2022-10-27 stsp 				verbosity++;
2232 6f319063 2022-10-27 stsp 			break;
2233 13b2bc37 2022-10-23 stsp 		case 'W':
2234 13b2bc37 2022-10-23 stsp 			proc_id = PROC_REPO_WRITE;
2235 13b2bc37 2022-10-23 stsp 			break;
2236 13b2bc37 2022-10-23 stsp 		default:
2237 13b2bc37 2022-10-23 stsp 			usage();
2238 13b2bc37 2022-10-23 stsp 		}
2239 13b2bc37 2022-10-23 stsp 	}
2240 13b2bc37 2022-10-23 stsp 
2241 13b2bc37 2022-10-23 stsp 	argc -= optind;
2242 13b2bc37 2022-10-23 stsp 	argv += optind;
2243 13b2bc37 2022-10-23 stsp 
2244 13b2bc37 2022-10-23 stsp 	if (argc != 0)
2245 13b2bc37 2022-10-23 stsp 		usage();
2246 13b2bc37 2022-10-23 stsp 
2247 b50a2b46 2022-12-29 stsp 	/* Require an absolute path in argv[0] for reliable re-exec. */
2248 b50a2b46 2022-12-29 stsp 	if (!got_path_is_absolute(argv0))
2249 b50a2b46 2022-12-29 stsp 		fatalx("bad path \"%s\": must be an absolute path", argv0);
2250 b50a2b46 2022-12-29 stsp 
2251 b50a2b46 2022-12-29 stsp 	if (geteuid() && (proc_id == PROC_GOTD || proc_id == PROC_LISTEN))
2252 13b2bc37 2022-10-23 stsp 		fatalx("need root privileges");
2253 13b2bc37 2022-10-23 stsp 
2254 13b2bc37 2022-10-23 stsp 	log_init(daemonize ? 0 : 1, LOG_DAEMON);
2255 13b2bc37 2022-10-23 stsp 	log_setverbose(verbosity);
2256 13b2bc37 2022-10-23 stsp 
2257 13b2bc37 2022-10-23 stsp 	if (parse_config(confpath, proc_id, &gotd) != 0)
2258 13b2bc37 2022-10-23 stsp 		return 1;
2259 13b2bc37 2022-10-23 stsp 
2260 b50a2b46 2022-12-29 stsp 	gotd.argv0 = argv0;
2261 b50a2b46 2022-12-29 stsp 	gotd.daemonize = daemonize;
2262 b50a2b46 2022-12-29 stsp 	gotd.verbosity = verbosity;
2263 b50a2b46 2022-12-29 stsp 	gotd.confpath = confpath;
2264 b50a2b46 2022-12-29 stsp 
2265 13b2bc37 2022-10-23 stsp 	if (proc_id == PROC_GOTD &&
2266 13b2bc37 2022-10-23 stsp 	    (gotd.nrepos == 0 || TAILQ_EMPTY(&gotd.repos)))
2267 13b2bc37 2022-10-23 stsp 		fatalx("no repository defined in configuration file");
2268 13b2bc37 2022-10-23 stsp 
2269 13b2bc37 2022-10-23 stsp 	pw = getpwnam(gotd.user_name);
2270 13b2bc37 2022-10-23 stsp 	if (pw == NULL)
2271 898c8f8f 2022-12-29 op 		fatalx("user %s not found", gotd.user_name);
2272 13b2bc37 2022-10-23 stsp 
2273 13b2bc37 2022-10-23 stsp 	if (pw->pw_uid == 0) {
2274 13b2bc37 2022-10-23 stsp 		fatalx("cannot run %s as %s: the user running %s "
2275 13b2bc37 2022-10-23 stsp 		    "must not be the superuser",
2276 13b2bc37 2022-10-23 stsp 		    getprogname(), pw->pw_name, getprogname());
2277 13b2bc37 2022-10-23 stsp 	}
2278 13b2bc37 2022-10-23 stsp 
2279 ddbe612c 2022-11-17 stsp 	if (getgrouplist(pw->pw_name, pw->pw_gid, groups, &ngroups) == -1)
2280 13b2bc37 2022-10-23 stsp 		log_warnx("group membership list truncated");
2281 13b2bc37 2022-10-23 stsp 
2282 ddbe612c 2022-11-17 stsp 	gr = match_group(groups, ngroups, gotd.unix_group_name);
2283 13b2bc37 2022-10-23 stsp 	if (gr == NULL) {
2284 13b2bc37 2022-10-23 stsp 		fatalx("cannot start %s: the user running %s "
2285 13b2bc37 2022-10-23 stsp 		    "must be a secondary member of group %s",
2286 13b2bc37 2022-10-23 stsp 		    getprogname(), getprogname(), gotd.unix_group_name);
2287 13b2bc37 2022-10-23 stsp 	}
2288 13b2bc37 2022-10-23 stsp 	if (gr->gr_gid == pw->pw_gid) {
2289 13b2bc37 2022-10-23 stsp 		fatalx("cannot start %s: the user running %s "
2290 13b2bc37 2022-10-23 stsp 		    "must be a secondary member of group %s, but "
2291 13b2bc37 2022-10-23 stsp 		    "%s is the user's primary group",
2292 13b2bc37 2022-10-23 stsp 		    getprogname(), getprogname(), gotd.unix_group_name,
2293 13b2bc37 2022-10-23 stsp 		    gotd.unix_group_name);
2294 13b2bc37 2022-10-23 stsp 	}
2295 13b2bc37 2022-10-23 stsp 
2296 d93ecf7d 2022-12-14 stsp 	if (proc_id == PROC_LISTEN &&
2297 13b2bc37 2022-10-23 stsp 	    !got_path_is_absolute(gotd.unix_socket_path))
2298 13b2bc37 2022-10-23 stsp 		fatalx("bad unix socket path \"%s\": must be an absolute path",
2299 13b2bc37 2022-10-23 stsp 		    gotd.unix_socket_path);
2300 13b2bc37 2022-10-23 stsp 
2301 13b2bc37 2022-10-23 stsp 	if (noaction)
2302 13b2bc37 2022-10-23 stsp 		return 0;
2303 13b2bc37 2022-10-23 stsp 
2304 b1142068 2022-12-05 stsp 	if (proc_id == PROC_GOTD) {
2305 d93ecf7d 2022-12-14 stsp 		gotd.pid = getpid();
2306 d93ecf7d 2022-12-14 stsp 		snprintf(title, sizeof(title), "%s", gotd_proc_names[proc_id]);
2307 d93ecf7d 2022-12-14 stsp 		start_listener(argv0, confpath, daemonize, verbosity);
2308 d93ecf7d 2022-12-14 stsp 		arc4random_buf(&clients_hash_key, sizeof(clients_hash_key));
2309 d93ecf7d 2022-12-14 stsp 		if (daemonize && daemon(1, 0) == -1)
2310 d93ecf7d 2022-12-14 stsp 			fatal("daemon");
2311 d93ecf7d 2022-12-14 stsp 	} else if (proc_id == PROC_LISTEN) {
2312 d93ecf7d 2022-12-14 stsp 		snprintf(title, sizeof(title), "%s", gotd_proc_names[proc_id]);
2313 b1142068 2022-12-05 stsp 		if (verbosity) {
2314 b1142068 2022-12-05 stsp 			log_info("socket: %s", gotd.unix_socket_path);
2315 b1142068 2022-12-05 stsp 			log_info("user: %s", pw->pw_name);
2316 b1142068 2022-12-05 stsp 			log_info("secondary group: %s", gr->gr_name);
2317 b1142068 2022-12-05 stsp 		}
2318 13b2bc37 2022-10-23 stsp 
2319 13b2bc37 2022-10-23 stsp 		fd = unix_socket_listen(gotd.unix_socket_path, pw->pw_uid,
2320 13b2bc37 2022-10-23 stsp 		    gr->gr_gid);
2321 13b2bc37 2022-10-23 stsp 		if (fd == -1) {
2322 13b2bc37 2022-10-23 stsp 			fatal("cannot listen on unix socket %s",
2323 13b2bc37 2022-10-23 stsp 			    gotd.unix_socket_path);
2324 13b2bc37 2022-10-23 stsp 		}
2325 eec68231 2022-12-14 stsp 		if (daemonize && daemon(0, 0) == -1)
2326 13b2bc37 2022-10-23 stsp 			fatal("daemon");
2327 13b2bc37 2022-10-23 stsp 	} else if (proc_id == PROC_REPO_READ || proc_id == PROC_REPO_WRITE) {
2328 13b2bc37 2022-10-23 stsp 		error = got_repo_pack_fds_open(&pack_fds);
2329 13b2bc37 2022-10-23 stsp 		if (error != NULL)
2330 13b2bc37 2022-10-23 stsp 			fatalx("cannot open pack tempfiles: %s", error->msg);
2331 13b2bc37 2022-10-23 stsp 		error = got_repo_temp_fds_open(&temp_fds);
2332 13b2bc37 2022-10-23 stsp 		if (error != NULL)
2333 13b2bc37 2022-10-23 stsp 			fatalx("cannot open pack tempfiles: %s", error->msg);
2334 13b2bc37 2022-10-23 stsp 		if (repo_path == NULL)
2335 13b2bc37 2022-10-23 stsp 			fatalx("repository path not specified");
2336 13b2bc37 2022-10-23 stsp 		snprintf(title, sizeof(title), "%s %s",
2337 13b2bc37 2022-10-23 stsp 		    gotd_proc_names[proc_id], repo_path);
2338 eec68231 2022-12-14 stsp 		if (daemonize && daemon(0, 0) == -1)
2339 13b2bc37 2022-10-23 stsp 			fatal("daemon");
2340 13b2bc37 2022-10-23 stsp 	} else
2341 13b2bc37 2022-10-23 stsp 		fatal("invalid process id %d", proc_id);
2342 13b2bc37 2022-10-23 stsp 
2343 13b2bc37 2022-10-23 stsp 	setproctitle("%s", title);
2344 13b2bc37 2022-10-23 stsp 	log_procinit(title);
2345 13b2bc37 2022-10-23 stsp 
2346 13b2bc37 2022-10-23 stsp 	/* Drop root privileges. */
2347 13b2bc37 2022-10-23 stsp 	if (setgid(pw->pw_gid) == -1)
2348 13b2bc37 2022-10-23 stsp 		fatal("setgid %d failed", pw->pw_gid);
2349 13b2bc37 2022-10-23 stsp 	if (setuid(pw->pw_uid) == -1)
2350 13b2bc37 2022-10-23 stsp 		fatal("setuid %d failed", pw->pw_uid);
2351 13b2bc37 2022-10-23 stsp 
2352 13b2bc37 2022-10-23 stsp 	event_init();
2353 13b2bc37 2022-10-23 stsp 
2354 13b2bc37 2022-10-23 stsp 	switch (proc_id) {
2355 13b2bc37 2022-10-23 stsp 	case PROC_GOTD:
2356 13b2bc37 2022-10-23 stsp #ifndef PROFILE
2357 b50a2b46 2022-12-29 stsp 		if (pledge("stdio rpath wpath cpath proc exec getpw "
2358 b50a2b46 2022-12-29 stsp 		    "sendfd recvfd fattr flock unix unveil", NULL) == -1)
2359 13b2bc37 2022-10-23 stsp 			err(1, "pledge");
2360 13b2bc37 2022-10-23 stsp #endif
2361 13b2bc37 2022-10-23 stsp 		break;
2362 d93ecf7d 2022-12-14 stsp 	case PROC_LISTEN:
2363 d93ecf7d 2022-12-14 stsp #ifndef PROFILE
2364 d93ecf7d 2022-12-14 stsp 		if (pledge("stdio sendfd unix", NULL) == -1)
2365 d93ecf7d 2022-12-14 stsp 			err(1, "pledge");
2366 d93ecf7d 2022-12-14 stsp #endif
2367 d93ecf7d 2022-12-14 stsp 		listen_main(title, fd);
2368 d93ecf7d 2022-12-14 stsp 		/* NOTREACHED */
2369 d93ecf7d 2022-12-14 stsp 		break;
2370 13b2bc37 2022-10-23 stsp 	case PROC_REPO_READ:
2371 13b2bc37 2022-10-23 stsp #ifndef PROFILE
2372 eec68231 2022-12-14 stsp 		if (pledge("stdio rpath recvfd unveil", NULL) == -1)
2373 13b2bc37 2022-10-23 stsp 			err(1, "pledge");
2374 13b2bc37 2022-10-23 stsp #endif
2375 eec68231 2022-12-14 stsp 		apply_unveil_repo_readonly(repo_path);
2376 eec68231 2022-12-14 stsp 		repo_read_main(title, repo_path, pack_fds, temp_fds);
2377 13b2bc37 2022-10-23 stsp 		/* NOTREACHED */
2378 13b2bc37 2022-10-23 stsp 		exit(0);
2379 13b2bc37 2022-10-23 stsp 	case PROC_REPO_WRITE:
2380 13b2bc37 2022-10-23 stsp #ifndef PROFILE
2381 eec68231 2022-12-14 stsp 		if (pledge("stdio rpath recvfd unveil", NULL) == -1)
2382 13b2bc37 2022-10-23 stsp 			err(1, "pledge");
2383 13b2bc37 2022-10-23 stsp #endif
2384 eec68231 2022-12-14 stsp 		apply_unveil_repo_readonly(repo_path);
2385 eec68231 2022-12-14 stsp 		repo_write_main(title, repo_path, pack_fds, temp_fds);
2386 13b2bc37 2022-10-23 stsp 		/* NOTREACHED */
2387 13b2bc37 2022-10-23 stsp 		exit(0);
2388 13b2bc37 2022-10-23 stsp 	default:
2389 13b2bc37 2022-10-23 stsp 		fatal("invalid process id %d", proc_id);
2390 13b2bc37 2022-10-23 stsp 	}
2391 13b2bc37 2022-10-23 stsp 
2392 13b2bc37 2022-10-23 stsp 	if (proc_id != PROC_GOTD)
2393 13b2bc37 2022-10-23 stsp 		fatal("invalid process id %d", proc_id);
2394 13b2bc37 2022-10-23 stsp 
2395 13b2bc37 2022-10-23 stsp 	apply_unveil();
2396 13b2bc37 2022-10-23 stsp 
2397 13b2bc37 2022-10-23 stsp 	signal_set(&evsigint, SIGINT, gotd_sighdlr, NULL);
2398 13b2bc37 2022-10-23 stsp 	signal_set(&evsigterm, SIGTERM, gotd_sighdlr, NULL);
2399 13b2bc37 2022-10-23 stsp 	signal_set(&evsighup, SIGHUP, gotd_sighdlr, NULL);
2400 13b2bc37 2022-10-23 stsp 	signal_set(&evsigusr1, SIGUSR1, gotd_sighdlr, NULL);
2401 13b2bc37 2022-10-23 stsp 	signal(SIGPIPE, SIG_IGN);
2402 13b2bc37 2022-10-23 stsp 
2403 13b2bc37 2022-10-23 stsp 	signal_add(&evsigint, NULL);
2404 13b2bc37 2022-10-23 stsp 	signal_add(&evsigterm, NULL);
2405 13b2bc37 2022-10-23 stsp 	signal_add(&evsighup, NULL);
2406 13b2bc37 2022-10-23 stsp 	signal_add(&evsigusr1, NULL);
2407 13b2bc37 2022-10-23 stsp 
2408 b50a2b46 2022-12-29 stsp 	gotd_imsg_event_add(&gotd.listen_proc.iev);
2409 13b2bc37 2022-10-23 stsp 
2410 13b2bc37 2022-10-23 stsp 	event_dispatch();
2411 13b2bc37 2022-10-23 stsp 
2412 13b2bc37 2022-10-23 stsp 	if (pack_fds)
2413 13b2bc37 2022-10-23 stsp 		got_repo_pack_fds_close(pack_fds);
2414 13b2bc37 2022-10-23 stsp 	free(repo_path);
2415 13b2bc37 2022-10-23 stsp 	return 0;
2416 13b2bc37 2022-10-23 stsp }