1 3efd8e31 2022-10-23 thomas /*
  2 3efd8e31 2022-10-23 thomas  * Copyright (c) 2022 Stefan Sperling <stsp@openbsd.org>
  3 3efd8e31 2022-10-23 thomas  *
  4 3efd8e31 2022-10-23 thomas  * Permission to use, copy, modify, and distribute this software for any
  5 3efd8e31 2022-10-23 thomas  * purpose with or without fee is hereby granted, provided that the above
  6 3efd8e31 2022-10-23 thomas  * copyright notice and this permission notice appear in all copies.
  7 3efd8e31 2022-10-23 thomas  *
  8 3efd8e31 2022-10-23 thomas  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  9 3efd8e31 2022-10-23 thomas  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 10 3efd8e31 2022-10-23 thomas  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 11 3efd8e31 2022-10-23 thomas  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 12 3efd8e31 2022-10-23 thomas  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 13 3efd8e31 2022-10-23 thomas  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 14 3efd8e31 2022-10-23 thomas  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 15 3efd8e31 2022-10-23 thomas  */
 16 3efd8e31 2022-10-23 thomas 
 17 3efd8e31 2022-10-23 thomas 
 18 3efd8e31 2022-10-23 thomas #define GOTD_UNIX_SOCKET "/var/run/gotd.sock"
 19 3efd8e31 2022-10-23 thomas #define GOTD_UNIX_SOCKET_BACKLOG 10
 20 3efd8e31 2022-10-23 thomas #define GOTD_USER	"_gotd"
 21 3efd8e31 2022-10-23 thomas #define GOTD_CONF_PATH	"/etc/gotd.conf"
 22 2b3d32a1 2022-12-30 thomas #define GOTD_EMPTY_PATH	"/var/empty"
 23 3efd8e31 2022-10-23 thomas 
 24 3efd8e31 2022-10-23 thomas #define GOTD_MAXCLIENTS		1024
 25 ba63ab46 2023-01-02 thomas #define GOTD_MAX_CONN_PER_UID	4
 26 3efd8e31 2022-10-23 thomas #define GOTD_FD_RESERVE		5
 27 3efd8e31 2022-10-23 thomas #define GOTD_FD_NEEDED		6
 28 bb3a6ce9 2022-11-17 thomas #define GOTD_FILENO_MSG_PIPE	3
 29 3efd8e31 2022-10-23 thomas 
 30 0781db0e 2023-01-06 thomas #define GOTD_DEFAULT_REQUEST_TIMEOUT	3600
 31 0781db0e 2023-01-06 thomas 
 32 3efd8e31 2022-10-23 thomas /* Client hash tables need some extra room. */
 33 3efd8e31 2022-10-23 thomas #define GOTD_CLIENT_TABLE_SIZE (GOTD_MAXCLIENTS * 4)
 34 3efd8e31 2022-10-23 thomas 
 35 3efd8e31 2022-10-23 thomas enum gotd_procid {
 36 3efd8e31 2022-10-23 thomas 	PROC_GOTD	= 0,
 37 2b3d32a1 2022-12-30 thomas 	PROC_LISTEN,
 38 c669c489 2022-12-30 thomas 	PROC_AUTH,
 39 62ee7d94 2023-01-10 thomas 	PROC_SESSION,
 40 3efd8e31 2022-10-23 thomas 	PROC_REPO_READ,
 41 3efd8e31 2022-10-23 thomas 	PROC_REPO_WRITE,
 42 3efd8e31 2022-10-23 thomas 	PROC_MAX,
 43 3efd8e31 2022-10-23 thomas };
 44 3efd8e31 2022-10-23 thomas 
 45 3efd8e31 2022-10-23 thomas struct gotd_imsgev {
 46 3efd8e31 2022-10-23 thomas 	struct imsgbuf	 ibuf;
 47 3efd8e31 2022-10-23 thomas 	void		(*handler)(int, short, void *);
 48 3efd8e31 2022-10-23 thomas 	void		*handler_arg;
 49 3efd8e31 2022-10-23 thomas 	struct event	 ev;
 50 3efd8e31 2022-10-23 thomas 	short		 events;
 51 3efd8e31 2022-10-23 thomas };
 52 3efd8e31 2022-10-23 thomas 
 53 3efd8e31 2022-10-23 thomas struct gotd_child_proc {
 54 3efd8e31 2022-10-23 thomas 	pid_t pid;
 55 3efd8e31 2022-10-23 thomas 	enum gotd_procid type;
 56 3efd8e31 2022-10-23 thomas 	char repo_name[NAME_MAX];
 57 414e37cb 2022-12-30 thomas 	char repo_path[PATH_MAX];
 58 3efd8e31 2022-10-23 thomas 	int pipe[2];
 59 3efd8e31 2022-10-23 thomas 	struct gotd_imsgev iev;
 60 3efd8e31 2022-10-23 thomas 	size_t nhelpers;
 61 729a7e24 2022-11-17 thomas };
 62 729a7e24 2022-11-17 thomas 
 63 729a7e24 2022-11-17 thomas enum gotd_access {
 64 729a7e24 2022-11-17 thomas 	GOTD_ACCESS_PERMITTED = 1,
 65 729a7e24 2022-11-17 thomas 	GOTD_ACCESS_DENIED
 66 729a7e24 2022-11-17 thomas };
 67 729a7e24 2022-11-17 thomas 
 68 729a7e24 2022-11-17 thomas struct gotd_access_rule {
 69 729a7e24 2022-11-17 thomas 	STAILQ_ENTRY(gotd_access_rule) entry;
 70 729a7e24 2022-11-17 thomas 
 71 729a7e24 2022-11-17 thomas 	enum gotd_access access;
 72 729a7e24 2022-11-17 thomas 
 73 729a7e24 2022-11-17 thomas 	int authorization;
 74 729a7e24 2022-11-17 thomas #define GOTD_AUTH_READ		0x1
 75 729a7e24 2022-11-17 thomas #define GOTD_AUTH_WRITE		0x2
 76 729a7e24 2022-11-17 thomas 
 77 729a7e24 2022-11-17 thomas 	char *identifier;
 78 3efd8e31 2022-10-23 thomas };
 79 729a7e24 2022-11-17 thomas STAILQ_HEAD(gotd_access_rule_list, gotd_access_rule);
 80 3efd8e31 2022-10-23 thomas 
 81 3efd8e31 2022-10-23 thomas struct gotd_repo {
 82 3efd8e31 2022-10-23 thomas 	TAILQ_ENTRY(gotd_repo)	 entry;
 83 3efd8e31 2022-10-23 thomas 
 84 3efd8e31 2022-10-23 thomas 	char name[NAME_MAX];
 85 3efd8e31 2022-10-23 thomas 	char path[PATH_MAX];
 86 729a7e24 2022-11-17 thomas 
 87 729a7e24 2022-11-17 thomas 	struct gotd_access_rule_list rules;
 88 6d7eb4f7 2023-04-04 thomas 	struct got_pathlist_head protected_tag_namespaces;
 89 6d7eb4f7 2023-04-04 thomas 	struct got_pathlist_head protected_branch_namespaces;
 90 6d7eb4f7 2023-04-04 thomas 	struct got_pathlist_head protected_branches;
 91 3efd8e31 2022-10-23 thomas };
 92 3efd8e31 2022-10-23 thomas TAILQ_HEAD(gotd_repolist, gotd_repo);
 93 3efd8e31 2022-10-23 thomas 
 94 7b1db75e 2023-01-14 thomas enum gotd_session_state {
 95 3efd8e31 2022-10-23 thomas 	GOTD_STATE_EXPECT_LIST_REFS,
 96 3efd8e31 2022-10-23 thomas 	GOTD_STATE_EXPECT_CAPABILITIES,
 97 3efd8e31 2022-10-23 thomas 	GOTD_STATE_EXPECT_WANT,
 98 3efd8e31 2022-10-23 thomas 	GOTD_STATE_EXPECT_REF_UPDATE,
 99 3efd8e31 2022-10-23 thomas 	GOTD_STATE_EXPECT_MORE_REF_UPDATES,
100 3efd8e31 2022-10-23 thomas 	GOTD_STATE_EXPECT_HAVE,
101 3efd8e31 2022-10-23 thomas 	GOTD_STATE_EXPECT_PACKFILE,
102 3efd8e31 2022-10-23 thomas 	GOTD_STATE_EXPECT_DONE,
103 3efd8e31 2022-10-23 thomas 	GOTD_STATE_DONE,
104 3efd8e31 2022-10-23 thomas };
105 3efd8e31 2022-10-23 thomas 
106 3efd8e31 2022-10-23 thomas struct gotd_client_capability {
107 3efd8e31 2022-10-23 thomas 	char *key;
108 3efd8e31 2022-10-23 thomas 	char *value;
109 3efd8e31 2022-10-23 thomas };
110 3efd8e31 2022-10-23 thomas 
111 3efd8e31 2022-10-23 thomas struct gotd_object_id_array {
112 3efd8e31 2022-10-23 thomas 	struct got_object_id		**ids;
113 3efd8e31 2022-10-23 thomas 	size_t				 nalloc;
114 3efd8e31 2022-10-23 thomas 	size_t				 nids;
115 3efd8e31 2022-10-23 thomas };
116 3efd8e31 2022-10-23 thomas 
117 0781db0e 2023-01-06 thomas struct gotd_uid_connection_limit {
118 0781db0e 2023-01-06 thomas 	uid_t uid;
119 0781db0e 2023-01-06 thomas 	int max_connections;
120 0781db0e 2023-01-06 thomas };
121 0781db0e 2023-01-06 thomas 
122 3efd8e31 2022-10-23 thomas struct gotd {
123 3efd8e31 2022-10-23 thomas 	pid_t pid;
124 3efd8e31 2022-10-23 thomas 	char unix_socket_path[PATH_MAX];
125 3efd8e31 2022-10-23 thomas 	char user_name[32];
126 3efd8e31 2022-10-23 thomas 	struct gotd_repolist repos;
127 3efd8e31 2022-10-23 thomas 	int nrepos;
128 85b37c72 2022-12-30 thomas 	struct gotd_child_proc listen_proc;
129 0781db0e 2023-01-06 thomas 	struct timeval request_timeout;
130 0781db0e 2023-01-06 thomas 	struct timeval auth_timeout;
131 0781db0e 2023-01-06 thomas 	struct gotd_uid_connection_limit *connection_limits;
132 0781db0e 2023-01-06 thomas 	size_t nconnection_limits;
133 85b37c72 2022-12-30 thomas 
134 85b37c72 2022-12-30 thomas 	char *argv0;
135 85b37c72 2022-12-30 thomas 	const char *confpath;
136 85b37c72 2022-12-30 thomas 	int daemonize;
137 3efd8e31 2022-10-23 thomas 	int verbosity;
138 3efd8e31 2022-10-23 thomas };
139 3efd8e31 2022-10-23 thomas 
140 3efd8e31 2022-10-23 thomas enum gotd_imsg_type {
141 3efd8e31 2022-10-23 thomas 	/* An error occured while processing a request. */
142 3efd8e31 2022-10-23 thomas 	GOTD_IMSG_ERROR,
143 3efd8e31 2022-10-23 thomas 
144 c902213d 2022-10-29 thomas 	/* Commands used by gotctl(8). */
145 c902213d 2022-10-29 thomas 	GOTD_IMSG_INFO,
146 c902213d 2022-10-29 thomas 	GOTD_IMSG_INFO_REPO,
147 c902213d 2022-10-29 thomas 	GOTD_IMSG_INFO_CLIENT,
148 c902213d 2022-10-29 thomas 	GOTD_IMSG_STOP,
149 c902213d 2022-10-29 thomas 
150 3efd8e31 2022-10-23 thomas 	/* Request a list of references. */
151 3efd8e31 2022-10-23 thomas 	GOTD_IMSG_LIST_REFS,
152 3efd8e31 2022-10-23 thomas 	GOTD_IMSG_LIST_REFS_INTERNAL,
153 3efd8e31 2022-10-23 thomas 
154 3efd8e31 2022-10-23 thomas 	/* References. */
155 3efd8e31 2022-10-23 thomas 	GOTD_IMSG_REFLIST,
156 3efd8e31 2022-10-23 thomas 	GOTD_IMSG_REF,
157 3efd8e31 2022-10-23 thomas 	GOTD_IMSG_SYMREF,
158 3efd8e31 2022-10-23 thomas 
159 3efd8e31 2022-10-23 thomas 	/* Git protocol capabilities. */
160 3efd8e31 2022-10-23 thomas 	GOTD_IMSG_CAPABILITIES,
161 3efd8e31 2022-10-23 thomas 	GOTD_IMSG_CAPABILITY,
162 3efd8e31 2022-10-23 thomas 
163 3efd8e31 2022-10-23 thomas 	/* Git protocol chatter. */
164 3efd8e31 2022-10-23 thomas 	GOTD_IMSG_WANT,		/* The client wants an object. */
165 3efd8e31 2022-10-23 thomas 	GOTD_IMSG_HAVE,		/* The client has an object. */
166 3efd8e31 2022-10-23 thomas 	GOTD_IMSG_ACK,		/* The server has an object or a reference. */
167 3efd8e31 2022-10-23 thomas 	GOTD_IMSG_NAK,		/* The server does not have an object/ref. */
168 3efd8e31 2022-10-23 thomas 	GOTD_IMSG_REF_UPDATE,	/* The client wants to update a reference. */
169 3efd8e31 2022-10-23 thomas 	GOTD_IMSG_REF_DELETE,	/* The client wants to delete a reference. */
170 3efd8e31 2022-10-23 thomas 	GOTD_IMSG_FLUSH,	/* The client sent a flush packet. */
171 3efd8e31 2022-10-23 thomas 	GOTD_IMSG_DONE,		/* The client is done chatting. */
172 3efd8e31 2022-10-23 thomas 
173 3efd8e31 2022-10-23 thomas 	/* Sending or receiving a pack file. */
174 3efd8e31 2022-10-23 thomas 	GOTD_IMSG_SEND_PACKFILE, /* The server is sending a pack file. */
175 3efd8e31 2022-10-23 thomas 	GOTD_IMSG_RECV_PACKFILE, /* The server is receiving a pack file. */
176 3efd8e31 2022-10-23 thomas 	GOTD_IMSG_PACKIDX_FILE,  /* Temporary file handle for new pack index. */
177 3efd8e31 2022-10-23 thomas 	GOTD_IMSG_PACKFILE_PIPE, /* Pipe to send/receive a pack file stream. */
178 3efd8e31 2022-10-23 thomas 	GOTD_IMSG_PACKFILE_PROGRESS, /* Progress reporting. */
179 3efd8e31 2022-10-23 thomas 	GOTD_IMSG_PACKFILE_READY, /* Pack file is ready to be sent. */
180 3efd8e31 2022-10-23 thomas 	GOTD_IMSG_PACKFILE_STATUS, /* Received pack success/failure status. */
181 3efd8e31 2022-10-23 thomas 	GOTD_IMSG_PACKFILE_INSTALL, /* Received pack file can be installed. */
182 3efd8e31 2022-10-23 thomas 	GOTD_IMSG_PACKFILE_DONE, /* Pack file has been sent/received. */
183 3efd8e31 2022-10-23 thomas 
184 3efd8e31 2022-10-23 thomas 	/* Reference updates. */
185 3efd8e31 2022-10-23 thomas 	GOTD_IMSG_REF_UPDATES_START, /* Ref updates starting. */
186 3efd8e31 2022-10-23 thomas 	GOTD_IMSG_REF_UPDATE_OK, /* Update went OK. */
187 3efd8e31 2022-10-23 thomas 	GOTD_IMSG_REF_UPDATE_NG, /* Update was not good. */
188 3efd8e31 2022-10-23 thomas 	GOTD_IMSG_REFS_UPDATED, /* The server proccessed all ref updates. */
189 3efd8e31 2022-10-23 thomas 
190 2b3d32a1 2022-12-30 thomas 	/* Client connections. */
191 3efd8e31 2022-10-23 thomas 	GOTD_IMSG_DISCONNECT,
192 2b3d32a1 2022-12-30 thomas 	GOTD_IMSG_CONNECT,
193 85b37c72 2022-12-30 thomas 
194 85b37c72 2022-12-30 thomas 	/* Child process management. */
195 62ee7d94 2023-01-10 thomas 	GOTD_IMSG_CLIENT_SESSION_READY,
196 85b37c72 2022-12-30 thomas 	GOTD_IMSG_REPO_CHILD_READY,
197 62ee7d94 2023-01-10 thomas 	GOTD_IMSG_CONNECT_REPO_CHILD,
198 c669c489 2022-12-30 thomas 
199 c669c489 2022-12-30 thomas 	/* Auth child process. */
200 c669c489 2022-12-30 thomas 	GOTD_IMSG_AUTHENTICATE,
201 c669c489 2022-12-30 thomas 	GOTD_IMSG_ACCESS_GRANTED,
202 3efd8e31 2022-10-23 thomas };
203 3efd8e31 2022-10-23 thomas 
204 3efd8e31 2022-10-23 thomas /* Structure for GOTD_IMSG_ERROR. */
205 3efd8e31 2022-10-23 thomas struct gotd_imsg_error {
206 3efd8e31 2022-10-23 thomas 	int code; /* an error code from got_error.h */
207 3efd8e31 2022-10-23 thomas 	int errno_code; /* in case code equals GOT_ERR_ERRNO */
208 3efd8e31 2022-10-23 thomas 	uint32_t client_id;
209 3efd8e31 2022-10-23 thomas 	char msg[GOT_ERR_MAX_MSG_SIZE];
210 3efd8e31 2022-10-23 thomas } __attribute__((__packed__));
211 3efd8e31 2022-10-23 thomas 
212 c902213d 2022-10-29 thomas /* Structure for GOTD_IMSG_INFO. */
213 c902213d 2022-10-29 thomas struct gotd_imsg_info {
214 c902213d 2022-10-29 thomas 	pid_t pid;
215 c902213d 2022-10-29 thomas 	int verbosity;
216 c902213d 2022-10-29 thomas 	int nrepos;
217 c902213d 2022-10-29 thomas 	int nclients;
218 c902213d 2022-10-29 thomas 
219 c902213d 2022-10-29 thomas 	/* Followed by nrepos GOTD_IMSG_INFO_REPO messages. */
220 c902213d 2022-10-29 thomas 	/* Followed by nclients GOTD_IMSG_INFO_CLIENT messages. */
221 c902213d 2022-10-29 thomas };
222 c902213d 2022-10-29 thomas 
223 c902213d 2022-10-29 thomas /* Structure for GOTD_IMSG_INFO_REPO. */
224 c902213d 2022-10-29 thomas struct gotd_imsg_info_repo {
225 c902213d 2022-10-29 thomas 	char repo_name[NAME_MAX];
226 c902213d 2022-10-29 thomas 	char repo_path[PATH_MAX];
227 c902213d 2022-10-29 thomas };
228 c902213d 2022-10-29 thomas 
229 c902213d 2022-10-29 thomas /* Structure for GOTD_IMSG_INFO_CLIENT */
230 c902213d 2022-10-29 thomas struct gotd_imsg_info_client {
231 c902213d 2022-10-29 thomas 	uid_t euid;
232 c902213d 2022-10-29 thomas 	gid_t egid;
233 c902213d 2022-10-29 thomas 	char repo_name[NAME_MAX];
234 c902213d 2022-10-29 thomas 	int is_writing;
235 62ee7d94 2023-01-10 thomas 	pid_t session_child_pid;
236 62ee7d94 2023-01-10 thomas 	pid_t repo_child_pid;
237 c902213d 2022-10-29 thomas };
238 c902213d 2022-10-29 thomas 
239 3efd8e31 2022-10-23 thomas /* Structure for GOTD_IMSG_LIST_REFS. */
240 3efd8e31 2022-10-23 thomas struct gotd_imsg_list_refs {
241 3efd8e31 2022-10-23 thomas 	char repo_name[NAME_MAX];
242 3efd8e31 2022-10-23 thomas 	int client_is_reading; /* 1 if reading, 0 if writing */
243 3efd8e31 2022-10-23 thomas };
244 3efd8e31 2022-10-23 thomas 
245 3efd8e31 2022-10-23 thomas /* Structure for GOTD_IMSG_LIST_REFS_INTERNAL. */
246 3efd8e31 2022-10-23 thomas struct gotd_imsg_list_refs_internal {
247 3efd8e31 2022-10-23 thomas 	uint32_t client_id;
248 3efd8e31 2022-10-23 thomas };
249 3efd8e31 2022-10-23 thomas 
250 3efd8e31 2022-10-23 thomas /* Structure for GOTD_IMSG_REFLIST. */
251 3efd8e31 2022-10-23 thomas struct gotd_imsg_reflist {
252 3efd8e31 2022-10-23 thomas 	size_t nrefs;
253 3efd8e31 2022-10-23 thomas 
254 3efd8e31 2022-10-23 thomas 	/* Followed by nrefs times of gotd_imsg_ref/gotd_imsg_symref data. */
255 3efd8e31 2022-10-23 thomas } __attribute__((__packed__));
256 3efd8e31 2022-10-23 thomas 
257 3efd8e31 2022-10-23 thomas /* Structure for GOTD_IMSG_REF data. */
258 3efd8e31 2022-10-23 thomas struct gotd_imsg_ref {
259 3efd8e31 2022-10-23 thomas 	uint8_t id[SHA1_DIGEST_LENGTH];
260 3efd8e31 2022-10-23 thomas 	size_t name_len;
261 3efd8e31 2022-10-23 thomas 	/* Followed by name_len data bytes. */
262 3efd8e31 2022-10-23 thomas } __attribute__((__packed__));
263 3efd8e31 2022-10-23 thomas 
264 3efd8e31 2022-10-23 thomas /* Structure for GOTD_IMSG_SYMREF data. */
265 3efd8e31 2022-10-23 thomas struct gotd_imsg_symref {
266 3efd8e31 2022-10-23 thomas 	size_t name_len;
267 3efd8e31 2022-10-23 thomas 	size_t target_len;
268 3efd8e31 2022-10-23 thomas 	uint8_t target_id[SHA1_DIGEST_LENGTH];
269 3efd8e31 2022-10-23 thomas 
270 3efd8e31 2022-10-23 thomas 	/*
271 3efd8e31 2022-10-23 thomas 	 * Followed by name_len + target_len data bytes.
272 3efd8e31 2022-10-23 thomas 	 */
273 3efd8e31 2022-10-23 thomas } __attribute__((__packed__));
274 3efd8e31 2022-10-23 thomas 
275 3efd8e31 2022-10-23 thomas /* Structure for GOTD_IMSG_CAPABILITIES data. */
276 3efd8e31 2022-10-23 thomas struct gotd_imsg_capabilities {
277 3efd8e31 2022-10-23 thomas 	size_t ncapabilities;
278 3efd8e31 2022-10-23 thomas 
279 3efd8e31 2022-10-23 thomas 	/*
280 3efd8e31 2022-10-23 thomas 	 * Followed by ncapabilities * GOTD_IMSG_CAPABILITY.
281 3efd8e31 2022-10-23 thomas 	 */
282 3efd8e31 2022-10-23 thomas } __attribute__((__packed__));
283 3efd8e31 2022-10-23 thomas 
284 3efd8e31 2022-10-23 thomas /* Structure for GOTD_IMSG_CAPABILITY data. */
285 3efd8e31 2022-10-23 thomas struct gotd_imsg_capability {
286 3efd8e31 2022-10-23 thomas 	size_t key_len;
287 3efd8e31 2022-10-23 thomas 	size_t value_len;
288 3efd8e31 2022-10-23 thomas 
289 3efd8e31 2022-10-23 thomas 	/*
290 3efd8e31 2022-10-23 thomas 	 * Followed by key_len + value_len data bytes.
291 3efd8e31 2022-10-23 thomas 	 */
292 3efd8e31 2022-10-23 thomas } __attribute__((__packed__));
293 3efd8e31 2022-10-23 thomas 
294 3efd8e31 2022-10-23 thomas /* Structure for GOTD_IMSG_WANT data. */
295 3efd8e31 2022-10-23 thomas struct gotd_imsg_want {
296 3efd8e31 2022-10-23 thomas 	uint8_t object_id[SHA1_DIGEST_LENGTH];
297 3efd8e31 2022-10-23 thomas 	uint32_t client_id;
298 3efd8e31 2022-10-23 thomas } __attribute__((__packed__));
299 3efd8e31 2022-10-23 thomas 
300 3efd8e31 2022-10-23 thomas /* Structure for GOTD_IMSG_HAVE data. */
301 3efd8e31 2022-10-23 thomas struct gotd_imsg_have {
302 3efd8e31 2022-10-23 thomas 	uint8_t object_id[SHA1_DIGEST_LENGTH];
303 3efd8e31 2022-10-23 thomas 	uint32_t client_id;
304 3efd8e31 2022-10-23 thomas } __attribute__((__packed__));
305 3efd8e31 2022-10-23 thomas 
306 3efd8e31 2022-10-23 thomas /* Structure for GOTD_IMSG_ACK data. */
307 3efd8e31 2022-10-23 thomas struct gotd_imsg_ack {
308 3efd8e31 2022-10-23 thomas 	uint8_t object_id[SHA1_DIGEST_LENGTH];
309 3efd8e31 2022-10-23 thomas 	uint32_t client_id;
310 3efd8e31 2022-10-23 thomas } __attribute__((__packed__));
311 3efd8e31 2022-10-23 thomas 
312 3efd8e31 2022-10-23 thomas /* Structure for GOTD_IMSG_NAK data. */
313 3efd8e31 2022-10-23 thomas struct gotd_imsg_nak {
314 3efd8e31 2022-10-23 thomas 	uint8_t object_id[SHA1_DIGEST_LENGTH];
315 3efd8e31 2022-10-23 thomas 	uint32_t client_id;
316 3efd8e31 2022-10-23 thomas } __attribute__((__packed__));
317 3efd8e31 2022-10-23 thomas 
318 3efd8e31 2022-10-23 thomas /* Structure for GOTD_IMSG_PACKFILE_STATUS data. */
319 3efd8e31 2022-10-23 thomas struct gotd_imsg_packfile_status {
320 3efd8e31 2022-10-23 thomas 	size_t reason_len;
321 3efd8e31 2022-10-23 thomas 
322 3efd8e31 2022-10-23 thomas 	/* Followed by reason_len data bytes. */
323 3efd8e31 2022-10-23 thomas } __attribute__((__packed__));
324 3efd8e31 2022-10-23 thomas 
325 3efd8e31 2022-10-23 thomas 
326 3efd8e31 2022-10-23 thomas /* Structure for GOTD_IMSG_REF_UPDATE data. */
327 3efd8e31 2022-10-23 thomas struct gotd_imsg_ref_update {
328 3efd8e31 2022-10-23 thomas 	uint8_t old_id[SHA1_DIGEST_LENGTH];
329 3efd8e31 2022-10-23 thomas 	uint8_t new_id[SHA1_DIGEST_LENGTH];
330 3efd8e31 2022-10-23 thomas 	int ref_is_new;
331 49563dfb 2023-01-28 thomas 	int delete_ref;
332 3efd8e31 2022-10-23 thomas 	uint32_t client_id;
333 3efd8e31 2022-10-23 thomas 	size_t name_len;
334 3efd8e31 2022-10-23 thomas 
335 3efd8e31 2022-10-23 thomas 	/* Followed by name_len data bytes. */
336 3efd8e31 2022-10-23 thomas } __attribute__((__packed__));
337 3efd8e31 2022-10-23 thomas 
338 3efd8e31 2022-10-23 thomas /* Structure for GOTD_IMSG_REF_UPDATES_START data. */
339 3efd8e31 2022-10-23 thomas struct gotd_imsg_ref_updates_start {
340 3efd8e31 2022-10-23 thomas 	int nref_updates;
341 3efd8e31 2022-10-23 thomas 	uint32_t client_id;
342 3efd8e31 2022-10-23 thomas 
343 3efd8e31 2022-10-23 thomas 	/* Followed by nref_updates GOT_IMSG_REF_UPDATE_OK/NG messages. */
344 3efd8e31 2022-10-23 thomas };
345 3efd8e31 2022-10-23 thomas 
346 3efd8e31 2022-10-23 thomas /* Structure for GOTD_IMSG_REF_UPDATE_OK data. */
347 3efd8e31 2022-10-23 thomas struct gotd_imsg_ref_update_ok {
348 3efd8e31 2022-10-23 thomas 	uint8_t old_id[SHA1_DIGEST_LENGTH];
349 3efd8e31 2022-10-23 thomas 	uint8_t new_id[SHA1_DIGEST_LENGTH];
350 3efd8e31 2022-10-23 thomas 	int ref_is_new;
351 3efd8e31 2022-10-23 thomas 	uint32_t client_id;
352 3efd8e31 2022-10-23 thomas 	size_t name_len;
353 3efd8e31 2022-10-23 thomas 
354 3efd8e31 2022-10-23 thomas 	/* Followed by name_len data bytes. */
355 3efd8e31 2022-10-23 thomas } __attribute__((__packed__));
356 3efd8e31 2022-10-23 thomas 
357 3efd8e31 2022-10-23 thomas /* Structure for GOTD_IMSG_REF_UPDATE_NG data. */
358 3efd8e31 2022-10-23 thomas struct gotd_imsg_ref_update_ng {
359 3efd8e31 2022-10-23 thomas 	uint8_t old_id[SHA1_DIGEST_LENGTH];
360 3efd8e31 2022-10-23 thomas 	uint8_t new_id[SHA1_DIGEST_LENGTH];
361 3efd8e31 2022-10-23 thomas 	uint32_t client_id;
362 3efd8e31 2022-10-23 thomas 	size_t name_len;
363 3efd8e31 2022-10-23 thomas 	size_t reason_len;
364 3efd8e31 2022-10-23 thomas 
365 3efd8e31 2022-10-23 thomas 	/* Followed by name_len + reason_len data bytes. */
366 3efd8e31 2022-10-23 thomas } __attribute__((__packed__));
367 3efd8e31 2022-10-23 thomas 
368 3efd8e31 2022-10-23 thomas /* Structure for GOTD_IMSG_SEND_PACKFILE data. */
369 3efd8e31 2022-10-23 thomas struct gotd_imsg_send_packfile {
370 3efd8e31 2022-10-23 thomas 	uint32_t client_id;
371 3efd8e31 2022-10-23 thomas 	int report_progress;
372 3efd8e31 2022-10-23 thomas 
373 3efd8e31 2022-10-23 thomas 	/* delta cache file is sent as a file descriptor */
374 3efd8e31 2022-10-23 thomas 
375 3efd8e31 2022-10-23 thomas 	/* followed by two GOTD_IMSG_PACKFILE_PIPE messages */
376 3efd8e31 2022-10-23 thomas };
377 3efd8e31 2022-10-23 thomas 
378 3efd8e31 2022-10-23 thomas /* Structure for GOTD_IMSG_RECV_PACKFILE data. */
379 3efd8e31 2022-10-23 thomas struct gotd_imsg_recv_packfile {
380 3efd8e31 2022-10-23 thomas 	uint32_t client_id;
381 3efd8e31 2022-10-23 thomas 	int report_status;
382 3efd8e31 2022-10-23 thomas 
383 3efd8e31 2022-10-23 thomas 	/* pack destination temp file is sent as a file descriptor */
384 3efd8e31 2022-10-23 thomas };
385 3efd8e31 2022-10-23 thomas 
386 3efd8e31 2022-10-23 thomas /* Structure for GOTD_IMSG_PACKFILE_PIPE data. */
387 3efd8e31 2022-10-23 thomas struct gotd_imsg_packfile_pipe {
388 3efd8e31 2022-10-23 thomas 	uint32_t client_id;
389 3efd8e31 2022-10-23 thomas };
390 3efd8e31 2022-10-23 thomas 
391 3efd8e31 2022-10-23 thomas /* Structure for GOTD_IMSG_PACKIDX_FILE data. */
392 3efd8e31 2022-10-23 thomas struct gotd_imsg_packidx_file {
393 3efd8e31 2022-10-23 thomas 	uint32_t client_id;
394 3efd8e31 2022-10-23 thomas };
395 3efd8e31 2022-10-23 thomas 
396 3efd8e31 2022-10-23 thomas 
397 3efd8e31 2022-10-23 thomas /*
398 3efd8e31 2022-10-23 thomas  * Structure for GOTD_IMSG_PACKFILE_PROGRESS and
399 3efd8e31 2022-10-23 thomas  * GOTD_IMSG_PACKFILE_READY data.
400 3efd8e31 2022-10-23 thomas  */
401 3efd8e31 2022-10-23 thomas struct gotd_imsg_packfile_progress {
402 3efd8e31 2022-10-23 thomas 	uint32_t client_id;
403 3efd8e31 2022-10-23 thomas 	int ncolored;
404 3efd8e31 2022-10-23 thomas 	int nfound;
405 3efd8e31 2022-10-23 thomas 	int ntrees;
406 3efd8e31 2022-10-23 thomas 	off_t packfile_size;
407 3efd8e31 2022-10-23 thomas 	int ncommits;
408 3efd8e31 2022-10-23 thomas 	int nobj_total;
409 3efd8e31 2022-10-23 thomas 	int nobj_deltify;
410 3efd8e31 2022-10-23 thomas 	int nobj_written;
411 3efd8e31 2022-10-23 thomas };
412 3efd8e31 2022-10-23 thomas 
413 3efd8e31 2022-10-23 thomas /* Structure for GOTD_IMSG_PACKFILE_INSTALL. */
414 3efd8e31 2022-10-23 thomas struct gotd_imsg_packfile_install {
415 3efd8e31 2022-10-23 thomas 	uint32_t client_id;
416 3efd8e31 2022-10-23 thomas 	uint8_t pack_sha1[SHA1_DIGEST_LENGTH];
417 3efd8e31 2022-10-23 thomas };
418 3efd8e31 2022-10-23 thomas 
419 3efd8e31 2022-10-23 thomas /* Structure for GOTD_IMSG_PACKFILE_DONE data. */
420 3efd8e31 2022-10-23 thomas struct gotd_imsg_packfile_done {
421 3efd8e31 2022-10-23 thomas 	uint32_t client_id;
422 3efd8e31 2022-10-23 thomas };
423 3efd8e31 2022-10-23 thomas 
424 3efd8e31 2022-10-23 thomas /* Structure for GOTD_IMSG_DISCONNECT data. */
425 3efd8e31 2022-10-23 thomas struct gotd_imsg_disconnect {
426 3efd8e31 2022-10-23 thomas 	uint32_t client_id;
427 3efd8e31 2022-10-23 thomas };
428 3efd8e31 2022-10-23 thomas 
429 2b3d32a1 2022-12-30 thomas /* Structure for GOTD_IMSG_CONNECT. */
430 2b3d32a1 2022-12-30 thomas struct gotd_imsg_connect {
431 2b3d32a1 2022-12-30 thomas 	uint32_t client_id;
432 0bcde4c8 2022-12-30 thomas 	uid_t euid;
433 0bcde4c8 2022-12-30 thomas 	gid_t egid;
434 2b3d32a1 2022-12-30 thomas };
435 2b3d32a1 2022-12-30 thomas 
436 62ee7d94 2023-01-10 thomas /* Structure for GOTD_IMSG_CONNECT_REPO_CHILD. */
437 62ee7d94 2023-01-10 thomas struct gotd_imsg_connect_repo_child {
438 62ee7d94 2023-01-10 thomas 	uint32_t client_id;
439 62ee7d94 2023-01-10 thomas 	enum gotd_procid proc_id;
440 62ee7d94 2023-01-10 thomas 
441 62ee7d94 2023-01-10 thomas 	/* repo child imsg pipe is passed via imsg fd */
442 62ee7d94 2023-01-10 thomas };
443 62ee7d94 2023-01-10 thomas 
444 c669c489 2022-12-30 thomas /* Structure for GOTD_IMSG_AUTHENTICATE. */
445 c669c489 2022-12-30 thomas struct gotd_imsg_auth {
446 c669c489 2022-12-30 thomas 	uid_t euid;
447 c669c489 2022-12-30 thomas 	gid_t egid;
448 c669c489 2022-12-30 thomas 	int required_auth;
449 c669c489 2022-12-30 thomas 	uint32_t client_id;
450 c669c489 2022-12-30 thomas };
451 c669c489 2022-12-30 thomas 
452 7554713a 2023-04-01 thomas int parse_config(const char *, enum gotd_procid, struct gotd *, int);
453 5dcb3a43 2023-04-01 thomas struct gotd_repo *gotd_find_repo_by_name(const char *, struct gotd *);
454 6d7eb4f7 2023-04-04 thomas struct gotd_repo *gotd_find_repo_by_path(const char *, struct gotd *);
455 65a36f17 2023-04-22 thomas struct gotd_uid_connection_limit *gotd_find_uid_connection_limit(
456 65a36f17 2023-04-22 thomas     struct gotd_uid_connection_limit *limits, size_t nlimits, uid_t uid);
457 48488136 2023-04-22 thomas int gotd_parseuid(const char *s, uid_t *uid);
458 3efd8e31 2022-10-23 thomas 
459 3efd8e31 2022-10-23 thomas /* imsg.c */
460 3efd8e31 2022-10-23 thomas const struct got_error *gotd_imsg_flush(struct imsgbuf *);
461 3efd8e31 2022-10-23 thomas const struct got_error *gotd_imsg_recv(struct imsg *, struct imsgbuf *, size_t);
462 3efd8e31 2022-10-23 thomas const struct got_error *gotd_imsg_poll_recv(struct imsg *, struct imsgbuf *,
463 3efd8e31 2022-10-23 thomas     size_t);
464 3efd8e31 2022-10-23 thomas const struct got_error *gotd_imsg_recv_error(uint32_t *client_id,
465 3efd8e31 2022-10-23 thomas     struct imsg *imsg);
466 3efd8e31 2022-10-23 thomas int gotd_imsg_send_error(struct imsgbuf *ibuf, uint32_t, uint32_t,
467 3efd8e31 2022-10-23 thomas     const struct got_error *);
468 3efd8e31 2022-10-23 thomas int gotd_imsg_send_error_event(struct gotd_imsgev *, uint32_t, uint32_t,
469 3efd8e31 2022-10-23 thomas     const struct got_error *);
470 3efd8e31 2022-10-23 thomas void gotd_imsg_event_add(struct gotd_imsgev *);
471 3efd8e31 2022-10-23 thomas int gotd_imsg_compose_event(struct gotd_imsgev *, uint16_t, uint32_t, int,
472 3efd8e31 2022-10-23 thomas     void *, uint16_t);
473 3efd8e31 2022-10-23 thomas int gotd_imsg_forward(struct gotd_imsgev *, struct imsg *, int);
474 3efd8e31 2022-10-23 thomas 
475 3efd8e31 2022-10-23 thomas void gotd_imsg_send_ack(struct got_object_id *, struct imsgbuf *,
476 3efd8e31 2022-10-23 thomas     uint32_t, pid_t);
477 3efd8e31 2022-10-23 thomas void gotd_imsg_send_nak(struct got_object_id *, struct imsgbuf *,
478 3efd8e31 2022-10-23 thomas     uint32_t, pid_t);