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 
 18 13b2bc37 2022-10-23 stsp #define GOTD_UNIX_SOCKET "/var/run/gotd.sock"
 19 13b2bc37 2022-10-23 stsp #define GOTD_UNIX_SOCKET_BACKLOG 10
 20 13b2bc37 2022-10-23 stsp #define GOTD_USER	"_gotd"
 21 13b2bc37 2022-10-23 stsp #define GOTD_CONF_PATH	"/etc/gotd.conf"
 22 d93ecf7d 2022-12-14 stsp #define GOTD_EMPTY_PATH	"/var/empty"
 23 13b2bc37 2022-10-23 stsp 
 24 13b2bc37 2022-10-23 stsp #define GOTD_MAXCLIENTS		1024
 25 7a0564e3 2022-12-30 stsp #define GOTD_MAX_CONN_PER_UID	4
 26 13b2bc37 2022-10-23 stsp #define GOTD_FD_RESERVE		5
 27 13b2bc37 2022-10-23 stsp #define GOTD_FD_NEEDED		6
 28 8c6fc146 2022-11-17 stsp #define GOTD_FILENO_MSG_PIPE	3
 29 13b2bc37 2022-10-23 stsp 
 30 40b85cca 2023-01-03 stsp #define GOTD_DEFAULT_REQUEST_TIMEOUT	3600
 31 40b85cca 2023-01-03 stsp 
 32 13b2bc37 2022-10-23 stsp /* Client hash tables need some extra room. */
 33 13b2bc37 2022-10-23 stsp #define GOTD_CLIENT_TABLE_SIZE (GOTD_MAXCLIENTS * 4)
 34 13b2bc37 2022-10-23 stsp 
 35 13b2bc37 2022-10-23 stsp enum gotd_procid {
 36 13b2bc37 2022-10-23 stsp 	PROC_GOTD	= 0,
 37 d93ecf7d 2022-12-14 stsp 	PROC_LISTEN,
 38 5e25db14 2022-12-29 stsp 	PROC_AUTH,
 39 ae7c1b78 2023-01-10 stsp 	PROC_SESSION,
 40 13b2bc37 2022-10-23 stsp 	PROC_REPO_READ,
 41 13b2bc37 2022-10-23 stsp 	PROC_REPO_WRITE,
 42 13b2bc37 2022-10-23 stsp 	PROC_MAX,
 43 13b2bc37 2022-10-23 stsp };
 44 13b2bc37 2022-10-23 stsp 
 45 13b2bc37 2022-10-23 stsp struct gotd_imsgev {
 46 13b2bc37 2022-10-23 stsp 	struct imsgbuf	 ibuf;
 47 13b2bc37 2022-10-23 stsp 	void		(*handler)(int, short, void *);
 48 13b2bc37 2022-10-23 stsp 	void		*handler_arg;
 49 13b2bc37 2022-10-23 stsp 	struct event	 ev;
 50 13b2bc37 2022-10-23 stsp 	short		 events;
 51 13b2bc37 2022-10-23 stsp };
 52 13b2bc37 2022-10-23 stsp 
 53 13b2bc37 2022-10-23 stsp struct gotd_child_proc {
 54 13b2bc37 2022-10-23 stsp 	pid_t pid;
 55 13b2bc37 2022-10-23 stsp 	enum gotd_procid type;
 56 13b2bc37 2022-10-23 stsp 	char repo_name[NAME_MAX];
 57 eec68231 2022-12-14 stsp 	char repo_path[PATH_MAX];
 58 13b2bc37 2022-10-23 stsp 	int pipe[2];
 59 13b2bc37 2022-10-23 stsp 	struct gotd_imsgev iev;
 60 13b2bc37 2022-10-23 stsp 	size_t nhelpers;
 61 0ccf3acb 2022-11-16 stsp };
 62 0ccf3acb 2022-11-16 stsp 
 63 0ccf3acb 2022-11-16 stsp enum gotd_access {
 64 0ccf3acb 2022-11-16 stsp 	GOTD_ACCESS_PERMITTED = 1,
 65 0ccf3acb 2022-11-16 stsp 	GOTD_ACCESS_DENIED
 66 0ccf3acb 2022-11-16 stsp };
 67 0ccf3acb 2022-11-16 stsp 
 68 0ccf3acb 2022-11-16 stsp struct gotd_access_rule {
 69 0ccf3acb 2022-11-16 stsp 	STAILQ_ENTRY(gotd_access_rule) entry;
 70 0ccf3acb 2022-11-16 stsp 
 71 0ccf3acb 2022-11-16 stsp 	enum gotd_access access;
 72 0ccf3acb 2022-11-16 stsp 
 73 0ccf3acb 2022-11-16 stsp 	int authorization;
 74 0ccf3acb 2022-11-16 stsp #define GOTD_AUTH_READ		0x1
 75 0ccf3acb 2022-11-16 stsp #define GOTD_AUTH_WRITE		0x2
 76 0ccf3acb 2022-11-16 stsp 
 77 0ccf3acb 2022-11-16 stsp 	char *identifier;
 78 13b2bc37 2022-10-23 stsp };
 79 0ccf3acb 2022-11-16 stsp STAILQ_HEAD(gotd_access_rule_list, gotd_access_rule);
 80 13b2bc37 2022-10-23 stsp 
 81 13b2bc37 2022-10-23 stsp struct gotd_repo {
 82 13b2bc37 2022-10-23 stsp 	TAILQ_ENTRY(gotd_repo)	 entry;
 83 13b2bc37 2022-10-23 stsp 
 84 13b2bc37 2022-10-23 stsp 	char name[NAME_MAX];
 85 13b2bc37 2022-10-23 stsp 	char path[PATH_MAX];
 86 0ccf3acb 2022-11-16 stsp 
 87 0ccf3acb 2022-11-16 stsp 	struct gotd_access_rule_list rules;
 88 9afa3de2 2023-04-04 stsp 	struct got_pathlist_head protected_tag_namespaces;
 89 9afa3de2 2023-04-04 stsp 	struct got_pathlist_head protected_branch_namespaces;
 90 9afa3de2 2023-04-04 stsp 	struct got_pathlist_head protected_branches;
 91 13b2bc37 2022-10-23 stsp };
 92 13b2bc37 2022-10-23 stsp TAILQ_HEAD(gotd_repolist, gotd_repo);
 93 13b2bc37 2022-10-23 stsp 
 94 eac23c30 2023-01-10 stsp enum gotd_session_state {
 95 13b2bc37 2022-10-23 stsp 	GOTD_STATE_EXPECT_LIST_REFS,
 96 13b2bc37 2022-10-23 stsp 	GOTD_STATE_EXPECT_CAPABILITIES,
 97 13b2bc37 2022-10-23 stsp 	GOTD_STATE_EXPECT_WANT,
 98 13b2bc37 2022-10-23 stsp 	GOTD_STATE_EXPECT_REF_UPDATE,
 99 13b2bc37 2022-10-23 stsp 	GOTD_STATE_EXPECT_MORE_REF_UPDATES,
100 13b2bc37 2022-10-23 stsp 	GOTD_STATE_EXPECT_HAVE,
101 13b2bc37 2022-10-23 stsp 	GOTD_STATE_EXPECT_PACKFILE,
102 13b2bc37 2022-10-23 stsp 	GOTD_STATE_EXPECT_DONE,
103 13b2bc37 2022-10-23 stsp 	GOTD_STATE_DONE,
104 13b2bc37 2022-10-23 stsp };
105 13b2bc37 2022-10-23 stsp 
106 13b2bc37 2022-10-23 stsp struct gotd_client_capability {
107 13b2bc37 2022-10-23 stsp 	char *key;
108 13b2bc37 2022-10-23 stsp 	char *value;
109 13b2bc37 2022-10-23 stsp };
110 13b2bc37 2022-10-23 stsp 
111 13b2bc37 2022-10-23 stsp struct gotd_object_id_array {
112 13b2bc37 2022-10-23 stsp 	struct got_object_id		**ids;
113 13b2bc37 2022-10-23 stsp 	size_t				 nalloc;
114 13b2bc37 2022-10-23 stsp 	size_t				 nids;
115 13b2bc37 2022-10-23 stsp };
116 13b2bc37 2022-10-23 stsp 
117 40b85cca 2023-01-03 stsp struct gotd_uid_connection_limit {
118 40b85cca 2023-01-03 stsp 	uid_t uid;
119 40b85cca 2023-01-03 stsp 	int max_connections;
120 40b85cca 2023-01-03 stsp };
121 40b85cca 2023-01-03 stsp 
122 13b2bc37 2022-10-23 stsp struct gotd {
123 13b2bc37 2022-10-23 stsp 	pid_t pid;
124 13b2bc37 2022-10-23 stsp 	char unix_socket_path[PATH_MAX];
125 13b2bc37 2022-10-23 stsp 	char user_name[32];
126 13b2bc37 2022-10-23 stsp 	struct gotd_repolist repos;
127 13b2bc37 2022-10-23 stsp 	int nrepos;
128 b50a2b46 2022-12-29 stsp 	struct gotd_child_proc listen_proc;
129 40b85cca 2023-01-03 stsp 	struct timeval request_timeout;
130 40b85cca 2023-01-03 stsp 	struct timeval auth_timeout;
131 40b85cca 2023-01-03 stsp 	struct gotd_uid_connection_limit *connection_limits;
132 40b85cca 2023-01-03 stsp 	size_t nconnection_limits;
133 b50a2b46 2022-12-29 stsp 
134 b50a2b46 2022-12-29 stsp 	char *argv0;
135 b50a2b46 2022-12-29 stsp 	const char *confpath;
136 b50a2b46 2022-12-29 stsp 	int daemonize;
137 13b2bc37 2022-10-23 stsp 	int verbosity;
138 13b2bc37 2022-10-23 stsp };
139 13b2bc37 2022-10-23 stsp 
140 13b2bc37 2022-10-23 stsp enum gotd_imsg_type {
141 13b2bc37 2022-10-23 stsp 	/* An error occured while processing a request. */
142 13b2bc37 2022-10-23 stsp 	GOTD_IMSG_ERROR,
143 13b2bc37 2022-10-23 stsp 
144 f1752522 2022-10-29 stsp 	/* Commands used by gotctl(8). */
145 f1752522 2022-10-29 stsp 	GOTD_IMSG_INFO,
146 f1752522 2022-10-29 stsp 	GOTD_IMSG_INFO_REPO,
147 f1752522 2022-10-29 stsp 	GOTD_IMSG_INFO_CLIENT,
148 f1752522 2022-10-29 stsp 	GOTD_IMSG_STOP,
149 f1752522 2022-10-29 stsp 
150 13b2bc37 2022-10-23 stsp 	/* Request a list of references. */
151 13b2bc37 2022-10-23 stsp 	GOTD_IMSG_LIST_REFS,
152 13b2bc37 2022-10-23 stsp 	GOTD_IMSG_LIST_REFS_INTERNAL,
153 13b2bc37 2022-10-23 stsp 
154 13b2bc37 2022-10-23 stsp 	/* References. */
155 13b2bc37 2022-10-23 stsp 	GOTD_IMSG_REFLIST,
156 13b2bc37 2022-10-23 stsp 	GOTD_IMSG_REF,
157 13b2bc37 2022-10-23 stsp 	GOTD_IMSG_SYMREF,
158 13b2bc37 2022-10-23 stsp 
159 13b2bc37 2022-10-23 stsp 	/* Git protocol capabilities. */
160 13b2bc37 2022-10-23 stsp 	GOTD_IMSG_CAPABILITIES,
161 13b2bc37 2022-10-23 stsp 	GOTD_IMSG_CAPABILITY,
162 13b2bc37 2022-10-23 stsp 
163 13b2bc37 2022-10-23 stsp 	/* Git protocol chatter. */
164 13b2bc37 2022-10-23 stsp 	GOTD_IMSG_WANT,		/* The client wants an object. */
165 13b2bc37 2022-10-23 stsp 	GOTD_IMSG_HAVE,		/* The client has an object. */
166 13b2bc37 2022-10-23 stsp 	GOTD_IMSG_ACK,		/* The server has an object or a reference. */
167 13b2bc37 2022-10-23 stsp 	GOTD_IMSG_NAK,		/* The server does not have an object/ref. */
168 13b2bc37 2022-10-23 stsp 	GOTD_IMSG_REF_UPDATE,	/* The client wants to update a reference. */
169 13b2bc37 2022-10-23 stsp 	GOTD_IMSG_REF_DELETE,	/* The client wants to delete a reference. */
170 13b2bc37 2022-10-23 stsp 	GOTD_IMSG_FLUSH,	/* The client sent a flush packet. */
171 13b2bc37 2022-10-23 stsp 	GOTD_IMSG_DONE,		/* The client is done chatting. */
172 13b2bc37 2022-10-23 stsp 
173 13b2bc37 2022-10-23 stsp 	/* Sending or receiving a pack file. */
174 13b2bc37 2022-10-23 stsp 	GOTD_IMSG_SEND_PACKFILE, /* The server is sending a pack file. */
175 13b2bc37 2022-10-23 stsp 	GOTD_IMSG_RECV_PACKFILE, /* The server is receiving a pack file. */
176 13b2bc37 2022-10-23 stsp 	GOTD_IMSG_PACKIDX_FILE,  /* Temporary file handle for new pack index. */
177 13b2bc37 2022-10-23 stsp 	GOTD_IMSG_PACKFILE_PIPE, /* Pipe to send/receive a pack file stream. */
178 13b2bc37 2022-10-23 stsp 	GOTD_IMSG_PACKFILE_PROGRESS, /* Progress reporting. */
179 13b2bc37 2022-10-23 stsp 	GOTD_IMSG_PACKFILE_READY, /* Pack file is ready to be sent. */
180 13b2bc37 2022-10-23 stsp 	GOTD_IMSG_PACKFILE_STATUS, /* Received pack success/failure status. */
181 13b2bc37 2022-10-23 stsp 	GOTD_IMSG_PACKFILE_INSTALL, /* Received pack file can be installed. */
182 13b2bc37 2022-10-23 stsp 	GOTD_IMSG_PACKFILE_DONE, /* Pack file has been sent/received. */
183 13b2bc37 2022-10-23 stsp 
184 13b2bc37 2022-10-23 stsp 	/* Reference updates. */
185 13b2bc37 2022-10-23 stsp 	GOTD_IMSG_REF_UPDATES_START, /* Ref updates starting. */
186 13b2bc37 2022-10-23 stsp 	GOTD_IMSG_REF_UPDATE_OK, /* Update went OK. */
187 13b2bc37 2022-10-23 stsp 	GOTD_IMSG_REF_UPDATE_NG, /* Update was not good. */
188 13b2bc37 2022-10-23 stsp 	GOTD_IMSG_REFS_UPDATED, /* The server proccessed all ref updates. */
189 13b2bc37 2022-10-23 stsp 
190 d93ecf7d 2022-12-14 stsp 	/* Client connections. */
191 13b2bc37 2022-10-23 stsp 	GOTD_IMSG_DISCONNECT,
192 d93ecf7d 2022-12-14 stsp 	GOTD_IMSG_CONNECT,
193 b50a2b46 2022-12-29 stsp 
194 b50a2b46 2022-12-29 stsp 	/* Child process management. */
195 ae7c1b78 2023-01-10 stsp 	GOTD_IMSG_CLIENT_SESSION_READY,
196 b50a2b46 2022-12-29 stsp 	GOTD_IMSG_REPO_CHILD_READY,
197 ae7c1b78 2023-01-10 stsp 	GOTD_IMSG_CONNECT_REPO_CHILD,
198 5e25db14 2022-12-29 stsp 
199 5e25db14 2022-12-29 stsp 	/* Auth child process. */
200 5e25db14 2022-12-29 stsp 	GOTD_IMSG_AUTHENTICATE,
201 5e25db14 2022-12-29 stsp 	GOTD_IMSG_ACCESS_GRANTED,
202 13b2bc37 2022-10-23 stsp };
203 13b2bc37 2022-10-23 stsp 
204 13b2bc37 2022-10-23 stsp /* Structure for GOTD_IMSG_ERROR. */
205 13b2bc37 2022-10-23 stsp struct gotd_imsg_error {
206 13b2bc37 2022-10-23 stsp 	int code; /* an error code from got_error.h */
207 13b2bc37 2022-10-23 stsp 	int errno_code; /* in case code equals GOT_ERR_ERRNO */
208 13b2bc37 2022-10-23 stsp 	uint32_t client_id;
209 13b2bc37 2022-10-23 stsp 	char msg[GOT_ERR_MAX_MSG_SIZE];
210 13b2bc37 2022-10-23 stsp } __attribute__((__packed__));
211 13b2bc37 2022-10-23 stsp 
212 f1752522 2022-10-29 stsp /* Structure for GOTD_IMSG_INFO. */
213 f1752522 2022-10-29 stsp struct gotd_imsg_info {
214 f1752522 2022-10-29 stsp 	pid_t pid;
215 f1752522 2022-10-29 stsp 	int verbosity;
216 f1752522 2022-10-29 stsp 	int nrepos;
217 f1752522 2022-10-29 stsp 	int nclients;
218 f1752522 2022-10-29 stsp 
219 f1752522 2022-10-29 stsp 	/* Followed by nrepos GOTD_IMSG_INFO_REPO messages. */
220 f1752522 2022-10-29 stsp 	/* Followed by nclients GOTD_IMSG_INFO_CLIENT messages. */
221 f1752522 2022-10-29 stsp };
222 f1752522 2022-10-29 stsp 
223 f1752522 2022-10-29 stsp /* Structure for GOTD_IMSG_INFO_REPO. */
224 f1752522 2022-10-29 stsp struct gotd_imsg_info_repo {
225 f1752522 2022-10-29 stsp 	char repo_name[NAME_MAX];
226 f1752522 2022-10-29 stsp 	char repo_path[PATH_MAX];
227 f1752522 2022-10-29 stsp };
228 f1752522 2022-10-29 stsp 
229 f1752522 2022-10-29 stsp /* Structure for GOTD_IMSG_INFO_CLIENT */
230 f1752522 2022-10-29 stsp struct gotd_imsg_info_client {
231 f1752522 2022-10-29 stsp 	uid_t euid;
232 f1752522 2022-10-29 stsp 	gid_t egid;
233 f1752522 2022-10-29 stsp 	char repo_name[NAME_MAX];
234 f1752522 2022-10-29 stsp 	int is_writing;
235 ae7c1b78 2023-01-10 stsp 	pid_t session_child_pid;
236 ae7c1b78 2023-01-10 stsp 	pid_t repo_child_pid;
237 f1752522 2022-10-29 stsp };
238 f1752522 2022-10-29 stsp 
239 13b2bc37 2022-10-23 stsp /* Structure for GOTD_IMSG_LIST_REFS. */
240 13b2bc37 2022-10-23 stsp struct gotd_imsg_list_refs {
241 13b2bc37 2022-10-23 stsp 	char repo_name[NAME_MAX];
242 13b2bc37 2022-10-23 stsp 	int client_is_reading; /* 1 if reading, 0 if writing */
243 13b2bc37 2022-10-23 stsp };
244 13b2bc37 2022-10-23 stsp 
245 13b2bc37 2022-10-23 stsp /* Structure for GOTD_IMSG_LIST_REFS_INTERNAL. */
246 13b2bc37 2022-10-23 stsp struct gotd_imsg_list_refs_internal {
247 13b2bc37 2022-10-23 stsp 	uint32_t client_id;
248 13b2bc37 2022-10-23 stsp };
249 13b2bc37 2022-10-23 stsp 
250 13b2bc37 2022-10-23 stsp /* Structure for GOTD_IMSG_REFLIST. */
251 13b2bc37 2022-10-23 stsp struct gotd_imsg_reflist {
252 13b2bc37 2022-10-23 stsp 	size_t nrefs;
253 13b2bc37 2022-10-23 stsp 
254 13b2bc37 2022-10-23 stsp 	/* Followed by nrefs times of gotd_imsg_ref/gotd_imsg_symref data. */
255 13b2bc37 2022-10-23 stsp } __attribute__((__packed__));
256 13b2bc37 2022-10-23 stsp 
257 13b2bc37 2022-10-23 stsp /* Structure for GOTD_IMSG_REF data. */
258 13b2bc37 2022-10-23 stsp struct gotd_imsg_ref {
259 13b2bc37 2022-10-23 stsp 	uint8_t id[SHA1_DIGEST_LENGTH];
260 13b2bc37 2022-10-23 stsp 	size_t name_len;
261 13b2bc37 2022-10-23 stsp 	/* Followed by name_len data bytes. */
262 13b2bc37 2022-10-23 stsp } __attribute__((__packed__));
263 13b2bc37 2022-10-23 stsp 
264 13b2bc37 2022-10-23 stsp /* Structure for GOTD_IMSG_SYMREF data. */
265 13b2bc37 2022-10-23 stsp struct gotd_imsg_symref {
266 13b2bc37 2022-10-23 stsp 	size_t name_len;
267 13b2bc37 2022-10-23 stsp 	size_t target_len;
268 13b2bc37 2022-10-23 stsp 	uint8_t target_id[SHA1_DIGEST_LENGTH];
269 13b2bc37 2022-10-23 stsp 
270 13b2bc37 2022-10-23 stsp 	/*
271 13b2bc37 2022-10-23 stsp 	 * Followed by name_len + target_len data bytes.
272 13b2bc37 2022-10-23 stsp 	 */
273 13b2bc37 2022-10-23 stsp } __attribute__((__packed__));
274 13b2bc37 2022-10-23 stsp 
275 13b2bc37 2022-10-23 stsp /* Structure for GOTD_IMSG_CAPABILITIES data. */
276 13b2bc37 2022-10-23 stsp struct gotd_imsg_capabilities {
277 13b2bc37 2022-10-23 stsp 	size_t ncapabilities;
278 13b2bc37 2022-10-23 stsp 
279 13b2bc37 2022-10-23 stsp 	/*
280 13b2bc37 2022-10-23 stsp 	 * Followed by ncapabilities * GOTD_IMSG_CAPABILITY.
281 13b2bc37 2022-10-23 stsp 	 */
282 13b2bc37 2022-10-23 stsp } __attribute__((__packed__));
283 13b2bc37 2022-10-23 stsp 
284 13b2bc37 2022-10-23 stsp /* Structure for GOTD_IMSG_CAPABILITY data. */
285 13b2bc37 2022-10-23 stsp struct gotd_imsg_capability {
286 13b2bc37 2022-10-23 stsp 	size_t key_len;
287 13b2bc37 2022-10-23 stsp 	size_t value_len;
288 13b2bc37 2022-10-23 stsp 
289 13b2bc37 2022-10-23 stsp 	/*
290 13b2bc37 2022-10-23 stsp 	 * Followed by key_len + value_len data bytes.
291 13b2bc37 2022-10-23 stsp 	 */
292 13b2bc37 2022-10-23 stsp } __attribute__((__packed__));
293 13b2bc37 2022-10-23 stsp 
294 13b2bc37 2022-10-23 stsp /* Structure for GOTD_IMSG_WANT data. */
295 13b2bc37 2022-10-23 stsp struct gotd_imsg_want {
296 13b2bc37 2022-10-23 stsp 	uint8_t object_id[SHA1_DIGEST_LENGTH];
297 13b2bc37 2022-10-23 stsp 	uint32_t client_id;
298 13b2bc37 2022-10-23 stsp } __attribute__((__packed__));
299 13b2bc37 2022-10-23 stsp 
300 13b2bc37 2022-10-23 stsp /* Structure for GOTD_IMSG_HAVE data. */
301 13b2bc37 2022-10-23 stsp struct gotd_imsg_have {
302 13b2bc37 2022-10-23 stsp 	uint8_t object_id[SHA1_DIGEST_LENGTH];
303 13b2bc37 2022-10-23 stsp 	uint32_t client_id;
304 13b2bc37 2022-10-23 stsp } __attribute__((__packed__));
305 13b2bc37 2022-10-23 stsp 
306 13b2bc37 2022-10-23 stsp /* Structure for GOTD_IMSG_ACK data. */
307 13b2bc37 2022-10-23 stsp struct gotd_imsg_ack {
308 13b2bc37 2022-10-23 stsp 	uint8_t object_id[SHA1_DIGEST_LENGTH];
309 13b2bc37 2022-10-23 stsp 	uint32_t client_id;
310 13b2bc37 2022-10-23 stsp } __attribute__((__packed__));
311 13b2bc37 2022-10-23 stsp 
312 13b2bc37 2022-10-23 stsp /* Structure for GOTD_IMSG_NAK data. */
313 13b2bc37 2022-10-23 stsp struct gotd_imsg_nak {
314 13b2bc37 2022-10-23 stsp 	uint8_t object_id[SHA1_DIGEST_LENGTH];
315 13b2bc37 2022-10-23 stsp 	uint32_t client_id;
316 13b2bc37 2022-10-23 stsp } __attribute__((__packed__));
317 13b2bc37 2022-10-23 stsp 
318 13b2bc37 2022-10-23 stsp /* Structure for GOTD_IMSG_PACKFILE_STATUS data. */
319 13b2bc37 2022-10-23 stsp struct gotd_imsg_packfile_status {
320 13b2bc37 2022-10-23 stsp 	size_t reason_len;
321 13b2bc37 2022-10-23 stsp 
322 13b2bc37 2022-10-23 stsp 	/* Followed by reason_len data bytes. */
323 13b2bc37 2022-10-23 stsp } __attribute__((__packed__));
324 13b2bc37 2022-10-23 stsp 
325 13b2bc37 2022-10-23 stsp 
326 13b2bc37 2022-10-23 stsp /* Structure for GOTD_IMSG_REF_UPDATE data. */
327 13b2bc37 2022-10-23 stsp struct gotd_imsg_ref_update {
328 13b2bc37 2022-10-23 stsp 	uint8_t old_id[SHA1_DIGEST_LENGTH];
329 13b2bc37 2022-10-23 stsp 	uint8_t new_id[SHA1_DIGEST_LENGTH];
330 13b2bc37 2022-10-23 stsp 	int ref_is_new;
331 9a8e357c 2023-01-28 op 	int delete_ref;
332 13b2bc37 2022-10-23 stsp 	uint32_t client_id;
333 13b2bc37 2022-10-23 stsp 	size_t name_len;
334 13b2bc37 2022-10-23 stsp 
335 13b2bc37 2022-10-23 stsp 	/* Followed by name_len data bytes. */
336 13b2bc37 2022-10-23 stsp } __attribute__((__packed__));
337 13b2bc37 2022-10-23 stsp 
338 13b2bc37 2022-10-23 stsp /* Structure for GOTD_IMSG_REF_UPDATES_START data. */
339 13b2bc37 2022-10-23 stsp struct gotd_imsg_ref_updates_start {
340 13b2bc37 2022-10-23 stsp 	int nref_updates;
341 13b2bc37 2022-10-23 stsp 	uint32_t client_id;
342 13b2bc37 2022-10-23 stsp 
343 13b2bc37 2022-10-23 stsp 	/* Followed by nref_updates GOT_IMSG_REF_UPDATE_OK/NG messages. */
344 13b2bc37 2022-10-23 stsp };
345 13b2bc37 2022-10-23 stsp 
346 13b2bc37 2022-10-23 stsp /* Structure for GOTD_IMSG_REF_UPDATE_OK data. */
347 13b2bc37 2022-10-23 stsp struct gotd_imsg_ref_update_ok {
348 13b2bc37 2022-10-23 stsp 	uint8_t old_id[SHA1_DIGEST_LENGTH];
349 13b2bc37 2022-10-23 stsp 	uint8_t new_id[SHA1_DIGEST_LENGTH];
350 13b2bc37 2022-10-23 stsp 	int ref_is_new;
351 13b2bc37 2022-10-23 stsp 	uint32_t client_id;
352 13b2bc37 2022-10-23 stsp 	size_t name_len;
353 13b2bc37 2022-10-23 stsp 
354 13b2bc37 2022-10-23 stsp 	/* Followed by name_len data bytes. */
355 13b2bc37 2022-10-23 stsp } __attribute__((__packed__));
356 13b2bc37 2022-10-23 stsp 
357 13b2bc37 2022-10-23 stsp /* Structure for GOTD_IMSG_REF_UPDATE_NG data. */
358 13b2bc37 2022-10-23 stsp struct gotd_imsg_ref_update_ng {
359 13b2bc37 2022-10-23 stsp 	uint8_t old_id[SHA1_DIGEST_LENGTH];
360 13b2bc37 2022-10-23 stsp 	uint8_t new_id[SHA1_DIGEST_LENGTH];
361 13b2bc37 2022-10-23 stsp 	uint32_t client_id;
362 13b2bc37 2022-10-23 stsp 	size_t name_len;
363 13b2bc37 2022-10-23 stsp 	size_t reason_len;
364 13b2bc37 2022-10-23 stsp 
365 13b2bc37 2022-10-23 stsp 	/* Followed by name_len + reason_len data bytes. */
366 13b2bc37 2022-10-23 stsp } __attribute__((__packed__));
367 13b2bc37 2022-10-23 stsp 
368 13b2bc37 2022-10-23 stsp /* Structure for GOTD_IMSG_SEND_PACKFILE data. */
369 13b2bc37 2022-10-23 stsp struct gotd_imsg_send_packfile {
370 13b2bc37 2022-10-23 stsp 	uint32_t client_id;
371 13b2bc37 2022-10-23 stsp 	int report_progress;
372 13b2bc37 2022-10-23 stsp 
373 13b2bc37 2022-10-23 stsp 	/* delta cache file is sent as a file descriptor */
374 13b2bc37 2022-10-23 stsp 
375 13b2bc37 2022-10-23 stsp 	/* followed by two GOTD_IMSG_PACKFILE_PIPE messages */
376 13b2bc37 2022-10-23 stsp };
377 13b2bc37 2022-10-23 stsp 
378 13b2bc37 2022-10-23 stsp /* Structure for GOTD_IMSG_RECV_PACKFILE data. */
379 13b2bc37 2022-10-23 stsp struct gotd_imsg_recv_packfile {
380 13b2bc37 2022-10-23 stsp 	uint32_t client_id;
381 13b2bc37 2022-10-23 stsp 	int report_status;
382 13b2bc37 2022-10-23 stsp 
383 13b2bc37 2022-10-23 stsp 	/* pack destination temp file is sent as a file descriptor */
384 13b2bc37 2022-10-23 stsp };
385 13b2bc37 2022-10-23 stsp 
386 13b2bc37 2022-10-23 stsp /* Structure for GOTD_IMSG_PACKFILE_PIPE data. */
387 13b2bc37 2022-10-23 stsp struct gotd_imsg_packfile_pipe {
388 13b2bc37 2022-10-23 stsp 	uint32_t client_id;
389 13b2bc37 2022-10-23 stsp };
390 13b2bc37 2022-10-23 stsp 
391 13b2bc37 2022-10-23 stsp /* Structure for GOTD_IMSG_PACKIDX_FILE data. */
392 13b2bc37 2022-10-23 stsp struct gotd_imsg_packidx_file {
393 13b2bc37 2022-10-23 stsp 	uint32_t client_id;
394 13b2bc37 2022-10-23 stsp };
395 13b2bc37 2022-10-23 stsp 
396 13b2bc37 2022-10-23 stsp 
397 13b2bc37 2022-10-23 stsp /*
398 13b2bc37 2022-10-23 stsp  * Structure for GOTD_IMSG_PACKFILE_PROGRESS and
399 13b2bc37 2022-10-23 stsp  * GOTD_IMSG_PACKFILE_READY data.
400 13b2bc37 2022-10-23 stsp  */
401 13b2bc37 2022-10-23 stsp struct gotd_imsg_packfile_progress {
402 13b2bc37 2022-10-23 stsp 	uint32_t client_id;
403 13b2bc37 2022-10-23 stsp 	int ncolored;
404 13b2bc37 2022-10-23 stsp 	int nfound;
405 13b2bc37 2022-10-23 stsp 	int ntrees;
406 13b2bc37 2022-10-23 stsp 	off_t packfile_size;
407 13b2bc37 2022-10-23 stsp 	int ncommits;
408 13b2bc37 2022-10-23 stsp 	int nobj_total;
409 13b2bc37 2022-10-23 stsp 	int nobj_deltify;
410 13b2bc37 2022-10-23 stsp 	int nobj_written;
411 13b2bc37 2022-10-23 stsp };
412 13b2bc37 2022-10-23 stsp 
413 13b2bc37 2022-10-23 stsp /* Structure for GOTD_IMSG_PACKFILE_INSTALL. */
414 13b2bc37 2022-10-23 stsp struct gotd_imsg_packfile_install {
415 13b2bc37 2022-10-23 stsp 	uint32_t client_id;
416 13b2bc37 2022-10-23 stsp 	uint8_t pack_sha1[SHA1_DIGEST_LENGTH];
417 13b2bc37 2022-10-23 stsp };
418 13b2bc37 2022-10-23 stsp 
419 13b2bc37 2022-10-23 stsp /* Structure for GOTD_IMSG_PACKFILE_DONE data. */
420 13b2bc37 2022-10-23 stsp struct gotd_imsg_packfile_done {
421 13b2bc37 2022-10-23 stsp 	uint32_t client_id;
422 13b2bc37 2022-10-23 stsp };
423 13b2bc37 2022-10-23 stsp 
424 13b2bc37 2022-10-23 stsp /* Structure for GOTD_IMSG_DISCONNECT data. */
425 13b2bc37 2022-10-23 stsp struct gotd_imsg_disconnect {
426 13b2bc37 2022-10-23 stsp 	uint32_t client_id;
427 13b2bc37 2022-10-23 stsp };
428 13b2bc37 2022-10-23 stsp 
429 d93ecf7d 2022-12-14 stsp /* Structure for GOTD_IMSG_CONNECT. */
430 d93ecf7d 2022-12-14 stsp struct gotd_imsg_connect {
431 d93ecf7d 2022-12-14 stsp 	uint32_t client_id;
432 365cf0f3 2022-12-29 stsp 	uid_t euid;
433 365cf0f3 2022-12-29 stsp 	gid_t egid;
434 d93ecf7d 2022-12-14 stsp };
435 d93ecf7d 2022-12-14 stsp 
436 ae7c1b78 2023-01-10 stsp /* Structure for GOTD_IMSG_CONNECT_REPO_CHILD. */
437 ae7c1b78 2023-01-10 stsp struct gotd_imsg_connect_repo_child {
438 ae7c1b78 2023-01-10 stsp 	uint32_t client_id;
439 ae7c1b78 2023-01-10 stsp 	enum gotd_procid proc_id;
440 ae7c1b78 2023-01-10 stsp 
441 ae7c1b78 2023-01-10 stsp 	/* repo child imsg pipe is passed via imsg fd */
442 ae7c1b78 2023-01-10 stsp };
443 ae7c1b78 2023-01-10 stsp 
444 5e25db14 2022-12-29 stsp /* Structure for GOTD_IMSG_AUTHENTICATE. */
445 5e25db14 2022-12-29 stsp struct gotd_imsg_auth {
446 5e25db14 2022-12-29 stsp 	uid_t euid;
447 5e25db14 2022-12-29 stsp 	gid_t egid;
448 5e25db14 2022-12-29 stsp 	int required_auth;
449 5e25db14 2022-12-29 stsp 	uint32_t client_id;
450 5e25db14 2022-12-29 stsp };
451 5e25db14 2022-12-29 stsp 
452 e9e0377f 2023-03-29 stsp int parse_config(const char *, enum gotd_procid, struct gotd *, int);
453 b09c1279 2023-03-28 stsp struct gotd_repo *gotd_find_repo_by_name(const char *, struct gotd *);
454 9afa3de2 2023-04-04 stsp struct gotd_repo *gotd_find_repo_by_path(const char *, struct gotd *);
455 eeb616b7 2023-04-14 stsp struct gotd_uid_connection_limit *gotd_find_uid_connection_limit(
456 eeb616b7 2023-04-14 stsp     struct gotd_uid_connection_limit *limits, size_t nlimits, uid_t uid);
457 1963be61 2023-04-14 stsp int gotd_parseuid(const char *s, uid_t *uid);
458 13b2bc37 2022-10-23 stsp 
459 13b2bc37 2022-10-23 stsp /* imsg.c */
460 13b2bc37 2022-10-23 stsp const struct got_error *gotd_imsg_flush(struct imsgbuf *);
461 13b2bc37 2022-10-23 stsp const struct got_error *gotd_imsg_recv(struct imsg *, struct imsgbuf *, size_t);
462 13b2bc37 2022-10-23 stsp const struct got_error *gotd_imsg_poll_recv(struct imsg *, struct imsgbuf *,
463 13b2bc37 2022-10-23 stsp     size_t);
464 13b2bc37 2022-10-23 stsp const struct got_error *gotd_imsg_recv_error(uint32_t *client_id,
465 13b2bc37 2022-10-23 stsp     struct imsg *imsg);
466 13b2bc37 2022-10-23 stsp int gotd_imsg_send_error(struct imsgbuf *ibuf, uint32_t, uint32_t,
467 13b2bc37 2022-10-23 stsp     const struct got_error *);
468 13b2bc37 2022-10-23 stsp int gotd_imsg_send_error_event(struct gotd_imsgev *, uint32_t, uint32_t,
469 13b2bc37 2022-10-23 stsp     const struct got_error *);
470 13b2bc37 2022-10-23 stsp void gotd_imsg_event_add(struct gotd_imsgev *);
471 13b2bc37 2022-10-23 stsp int gotd_imsg_compose_event(struct gotd_imsgev *, uint16_t, uint32_t, int,
472 13b2bc37 2022-10-23 stsp     void *, uint16_t);
473 13b2bc37 2022-10-23 stsp int gotd_imsg_forward(struct gotd_imsgev *, struct imsg *, int);
474 13b2bc37 2022-10-23 stsp 
475 13b2bc37 2022-10-23 stsp void gotd_imsg_send_ack(struct got_object_id *, struct imsgbuf *,
476 13b2bc37 2022-10-23 stsp     uint32_t, pid_t);
477 13b2bc37 2022-10-23 stsp void gotd_imsg_send_nak(struct got_object_id *, struct imsgbuf *,
478 13b2bc37 2022-10-23 stsp     uint32_t, pid_t);