2 c902213d 2022-10-29 thomas * Copyright (c) 2022 Stefan Sperling <stsp@openbsd.org>
4 c902213d 2022-10-29 thomas * Permission to use, copy, modify, and distribute this software for any
5 c902213d 2022-10-29 thomas * purpose with or without fee is hereby granted, provided that the above
6 c902213d 2022-10-29 thomas * copyright notice and this permission notice appear in all copies.
8 c902213d 2022-10-29 thomas * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 c902213d 2022-10-29 thomas * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 c902213d 2022-10-29 thomas * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 c902213d 2022-10-29 thomas * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 c902213d 2022-10-29 thomas * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 c902213d 2022-10-29 thomas * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 c902213d 2022-10-29 thomas * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 c902213d 2022-10-29 thomas #include <sys/queue.h>
18 c902213d 2022-10-29 thomas #include <sys/socket.h>
19 c902213d 2022-10-29 thomas #include <sys/un.h>
21 c902213d 2022-10-29 thomas #include <err.h>
22 c902213d 2022-10-29 thomas #include <event.h>
23 c902213d 2022-10-29 thomas #include <imsg.h>
24 c902213d 2022-10-29 thomas #include <limits.h>
25 c902213d 2022-10-29 thomas #include <locale.h>
26 c902213d 2022-10-29 thomas #include <sha1.h>
27 c902213d 2022-10-29 thomas #include <stdio.h>
28 c902213d 2022-10-29 thomas #include <stdlib.h>
29 c902213d 2022-10-29 thomas #include <string.h>
30 c902213d 2022-10-29 thomas #include <getopt.h>
31 c902213d 2022-10-29 thomas #include <unistd.h>
33 c902213d 2022-10-29 thomas #include "got_error.h"
34 c902213d 2022-10-29 thomas #include "got_version.h"
36 c902213d 2022-10-29 thomas #include "got_lib_gitproto.h"
38 c902213d 2022-10-29 thomas #include "gotd.h"
40 c902213d 2022-10-29 thomas #ifndef nitems
41 c902213d 2022-10-29 thomas #define nitems(_a) (sizeof((_a)) / sizeof((_a)[0]))
44 c902213d 2022-10-29 thomas #define GOTCTL_CMD_INFO "info"
45 c902213d 2022-10-29 thomas #define GOTCTL_CMD_STOP "stop"
47 c902213d 2022-10-29 thomas struct gotctl_cmd {
48 c902213d 2022-10-29 thomas const char *cmd_name;
49 c902213d 2022-10-29 thomas const struct got_error *(*cmd_main)(int, char *[], int);
50 c902213d 2022-10-29 thomas void (*cmd_usage)(void);
53 c902213d 2022-10-29 thomas __dead static void usage(int, int);
55 c902213d 2022-10-29 thomas __dead static void usage_info(void);
56 c902213d 2022-10-29 thomas __dead static void usage_stop(void);
58 c902213d 2022-10-29 thomas static const struct got_error* cmd_info(int, char *[], int);
59 c902213d 2022-10-29 thomas static const struct got_error* cmd_stop(int, char *[], int);
61 c902213d 2022-10-29 thomas static const struct gotctl_cmd gotctl_commands[] = {
62 c902213d 2022-10-29 thomas { "info", cmd_info, usage_info },
63 c902213d 2022-10-29 thomas { "stop", cmd_stop, usage_stop },
66 c902213d 2022-10-29 thomas __dead static void
67 c902213d 2022-10-29 thomas usage_info(void)
69 c902213d 2022-10-29 thomas fprintf(stderr, "usage: %s info\n", getprogname());
73 c902213d 2022-10-29 thomas static const struct got_error *
74 c902213d 2022-10-29 thomas show_info(struct imsg *imsg)
76 c902213d 2022-10-29 thomas struct gotd_imsg_info info;
77 c902213d 2022-10-29 thomas size_t datalen;
79 c902213d 2022-10-29 thomas datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
80 c902213d 2022-10-29 thomas if (datalen != sizeof(info))
81 c902213d 2022-10-29 thomas return got_error(GOT_ERR_PRIVSEP_LEN);
82 c902213d 2022-10-29 thomas memcpy(&info, imsg->data, sizeof(info));
84 c902213d 2022-10-29 thomas printf("gotd PID: %d\n", info.pid);
85 c902213d 2022-10-29 thomas printf("verbosity: %d\n", info.verbosity);
86 c902213d 2022-10-29 thomas printf("number of repositories: %d\n", info.nrepos);
87 c902213d 2022-10-29 thomas printf("number of connected clients: %d\n", info.nclients);
88 c902213d 2022-10-29 thomas return NULL;
91 c902213d 2022-10-29 thomas static const struct got_error *
92 c902213d 2022-10-29 thomas show_repo_info(struct imsg *imsg)
94 c902213d 2022-10-29 thomas struct gotd_imsg_info_repo info;
95 c902213d 2022-10-29 thomas size_t datalen;
97 c902213d 2022-10-29 thomas datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
98 c902213d 2022-10-29 thomas if (datalen != sizeof(info))
99 c902213d 2022-10-29 thomas return got_error(GOT_ERR_PRIVSEP_LEN);
100 c902213d 2022-10-29 thomas memcpy(&info, imsg->data, sizeof(info));
102 c902213d 2022-10-29 thomas printf("repository \"%s\", path %s\n", info.repo_name, info.repo_path);
103 c902213d 2022-10-29 thomas return NULL;
106 c902213d 2022-10-29 thomas static const char *
107 c902213d 2022-10-29 thomas get_state_name(enum gotd_client_state state)
109 c902213d 2022-10-29 thomas static char unknown_state[64];
111 c902213d 2022-10-29 thomas switch (state) {
112 c902213d 2022-10-29 thomas case GOTD_STATE_EXPECT_LIST_REFS:
113 c902213d 2022-10-29 thomas return "list-refs";
114 c902213d 2022-10-29 thomas case GOTD_STATE_EXPECT_CAPABILITIES:
115 c902213d 2022-10-29 thomas return "expect-capabilities";
116 c902213d 2022-10-29 thomas case GOTD_STATE_EXPECT_WANT:
117 c902213d 2022-10-29 thomas return "expect-want";
118 c902213d 2022-10-29 thomas case GOTD_STATE_EXPECT_REF_UPDATE:
119 c902213d 2022-10-29 thomas return "expect-ref-update";
120 c902213d 2022-10-29 thomas case GOTD_STATE_EXPECT_MORE_REF_UPDATES:
121 c902213d 2022-10-29 thomas return "expect-more-ref-updates";
122 c902213d 2022-10-29 thomas case GOTD_STATE_EXPECT_HAVE:
123 c902213d 2022-10-29 thomas return "expect-have";
124 c902213d 2022-10-29 thomas case GOTD_STATE_EXPECT_PACKFILE:
125 c902213d 2022-10-29 thomas return "expect-packfile";
126 c902213d 2022-10-29 thomas case GOTD_STATE_EXPECT_DONE:
127 c902213d 2022-10-29 thomas return "expect-done";
128 c902213d 2022-10-29 thomas case GOTD_STATE_DONE:
129 c902213d 2022-10-29 thomas return "done";
132 c902213d 2022-10-29 thomas snprintf(unknown_state, sizeof(unknown_state),
133 c902213d 2022-10-29 thomas "unknown state %d", state);
134 c902213d 2022-10-29 thomas return unknown_state;
137 c902213d 2022-10-29 thomas static const struct got_error *
138 c902213d 2022-10-29 thomas show_client_info(struct imsg *imsg)
140 c902213d 2022-10-29 thomas struct gotd_imsg_info_client info;
141 c902213d 2022-10-29 thomas size_t datalen;
143 c902213d 2022-10-29 thomas datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
144 c902213d 2022-10-29 thomas if (datalen != sizeof(info))
145 c902213d 2022-10-29 thomas return got_error(GOT_ERR_PRIVSEP_LEN);
146 c902213d 2022-10-29 thomas memcpy(&info, imsg->data, sizeof(info));
148 c902213d 2022-10-29 thomas printf("client UID %d, GID %d, protocol state '%s', ",
149 c902213d 2022-10-29 thomas info.euid, info.egid, get_state_name(info.state));
150 c902213d 2022-10-29 thomas if (info.is_writing)
151 c902213d 2022-10-29 thomas printf("writing to %s\n", info.repo_name);
153 c902213d 2022-10-29 thomas printf("reading from %s\n", info.repo_name);
155 c902213d 2022-10-29 thomas return NULL;
158 c902213d 2022-10-29 thomas static const struct got_error *
159 c902213d 2022-10-29 thomas show_capability(struct imsg *imsg)
161 c902213d 2022-10-29 thomas struct gotd_imsg_capability icapa;
162 c902213d 2022-10-29 thomas size_t datalen;
163 c902213d 2022-10-29 thomas char *key, *value = NULL;
165 c902213d 2022-10-29 thomas memset(&icapa, 0, sizeof(icapa));
167 c902213d 2022-10-29 thomas datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
168 c902213d 2022-10-29 thomas if (datalen < sizeof(icapa))
169 c902213d 2022-10-29 thomas return got_error(GOT_ERR_PRIVSEP_LEN);
170 c902213d 2022-10-29 thomas memcpy(&icapa, imsg->data, sizeof(icapa));
172 c902213d 2022-10-29 thomas if (datalen != sizeof(icapa) + icapa.key_len + icapa.value_len)
173 c902213d 2022-10-29 thomas return got_error(GOT_ERR_PRIVSEP_LEN);
175 c902213d 2022-10-29 thomas key = malloc(icapa.key_len + 1);
176 c902213d 2022-10-29 thomas if (key == NULL)
177 c902213d 2022-10-29 thomas return got_error_from_errno("malloc");
178 c902213d 2022-10-29 thomas if (icapa.value_len > 0) {
179 c902213d 2022-10-29 thomas value = malloc(icapa.value_len + 1);
180 c902213d 2022-10-29 thomas if (value == NULL) {
181 c902213d 2022-10-29 thomas free(key);
182 c902213d 2022-10-29 thomas return got_error_from_errno("malloc");
186 c902213d 2022-10-29 thomas memcpy(key, imsg->data + sizeof(icapa), icapa.key_len);
187 c902213d 2022-10-29 thomas key[icapa.key_len] = '\0';
188 c902213d 2022-10-29 thomas if (value) {
189 c902213d 2022-10-29 thomas memcpy(value, imsg->data + sizeof(icapa) + icapa.key_len,
190 c902213d 2022-10-29 thomas icapa.value_len);
191 c902213d 2022-10-29 thomas value[icapa.value_len] = '\0';
194 c902213d 2022-10-29 thomas if (strcmp(key, GOT_CAPA_AGENT) == 0)
195 c902213d 2022-10-29 thomas printf(" client user agent: %s\n", value);
196 c902213d 2022-10-29 thomas else if (value)
197 c902213d 2022-10-29 thomas printf(" client supports %s=%s\n", key, value);
199 c902213d 2022-10-29 thomas printf(" client supports %s\n", key);
201 c902213d 2022-10-29 thomas free(key);
202 c902213d 2022-10-29 thomas free(value);
203 c902213d 2022-10-29 thomas return NULL;
206 c902213d 2022-10-29 thomas static const struct got_error *
207 c902213d 2022-10-29 thomas cmd_info(int argc, char *argv[], int gotd_sock)
209 c902213d 2022-10-29 thomas const struct got_error *err;
210 c902213d 2022-10-29 thomas struct imsgbuf ibuf;
211 c902213d 2022-10-29 thomas struct imsg imsg;
213 c902213d 2022-10-29 thomas imsg_init(&ibuf, gotd_sock);
215 c902213d 2022-10-29 thomas if (imsg_compose(&ibuf, GOTD_IMSG_INFO, 0, 0, -1, NULL, 0) == -1)
216 c902213d 2022-10-29 thomas return got_error_from_errno("imsg_compose INFO");
218 c902213d 2022-10-29 thomas err = gotd_imsg_flush(&ibuf);
219 c902213d 2022-10-29 thomas while (err == NULL) {
220 c902213d 2022-10-29 thomas err = gotd_imsg_poll_recv(&imsg, &ibuf, 0);
221 c902213d 2022-10-29 thomas if (err) {
222 c902213d 2022-10-29 thomas if (err->code == GOT_ERR_EOF)
223 c902213d 2022-10-29 thomas err = NULL;
227 c902213d 2022-10-29 thomas switch (imsg.hdr.type) {
228 c902213d 2022-10-29 thomas case GOTD_IMSG_ERROR:
229 c902213d 2022-10-29 thomas err = gotd_imsg_recv_error(NULL, &imsg);
231 c902213d 2022-10-29 thomas case GOTD_IMSG_INFO:
232 c902213d 2022-10-29 thomas err = show_info(&imsg);
234 c902213d 2022-10-29 thomas case GOTD_IMSG_INFO_REPO:
235 c902213d 2022-10-29 thomas err = show_repo_info(&imsg);
237 c902213d 2022-10-29 thomas case GOTD_IMSG_INFO_CLIENT:
238 c902213d 2022-10-29 thomas err = show_client_info(&imsg);
240 c902213d 2022-10-29 thomas case GOTD_IMSG_CAPABILITY:
241 c902213d 2022-10-29 thomas err = show_capability(&imsg);
244 c902213d 2022-10-29 thomas err = got_error(GOT_ERR_PRIVSEP_MSG);
248 c902213d 2022-10-29 thomas imsg_free(&imsg);
251 c902213d 2022-10-29 thomas imsg_clear(&ibuf);
252 c902213d 2022-10-29 thomas return err;
255 c902213d 2022-10-29 thomas __dead static void
256 c902213d 2022-10-29 thomas usage_stop(void)
258 c902213d 2022-10-29 thomas fprintf(stderr, "usage: %s stop\n", getprogname());
262 c902213d 2022-10-29 thomas static const struct got_error *
263 c902213d 2022-10-29 thomas cmd_stop(int argc, char *argv[], int gotd_sock)
265 c902213d 2022-10-29 thomas const struct got_error *err;
266 c902213d 2022-10-29 thomas struct imsgbuf ibuf;
267 c902213d 2022-10-29 thomas struct imsg imsg;
269 c902213d 2022-10-29 thomas imsg_init(&ibuf, gotd_sock);
271 c902213d 2022-10-29 thomas if (imsg_compose(&ibuf, GOTD_IMSG_STOP, 0, 0, -1, NULL, 0) == -1)
272 c902213d 2022-10-29 thomas return got_error_from_errno("imsg_compose STOP");
274 c902213d 2022-10-29 thomas err = gotd_imsg_flush(&ibuf);
275 c902213d 2022-10-29 thomas while (err == NULL) {
276 c902213d 2022-10-29 thomas err = gotd_imsg_poll_recv(&imsg, &ibuf, 0);
277 c902213d 2022-10-29 thomas if (err) {
278 c902213d 2022-10-29 thomas if (err->code == GOT_ERR_EOF)
279 c902213d 2022-10-29 thomas err = NULL;
283 c902213d 2022-10-29 thomas switch (imsg.hdr.type) {
284 c902213d 2022-10-29 thomas case GOTD_IMSG_ERROR:
285 c902213d 2022-10-29 thomas err = gotd_imsg_recv_error(NULL, &imsg);
288 c902213d 2022-10-29 thomas err = got_error(GOT_ERR_PRIVSEP_MSG);
292 c902213d 2022-10-29 thomas imsg_free(&imsg);
295 c902213d 2022-10-29 thomas imsg_clear(&ibuf);
296 c902213d 2022-10-29 thomas return err;
299 c902213d 2022-10-29 thomas static void
300 c902213d 2022-10-29 thomas list_commands(FILE *fp)
302 c902213d 2022-10-29 thomas size_t i;
304 c902213d 2022-10-29 thomas fprintf(fp, "commands:");
305 c902213d 2022-10-29 thomas for (i = 0; i < nitems(gotctl_commands); i++) {
306 c902213d 2022-10-29 thomas const struct gotctl_cmd *cmd = &gotctl_commands[i];
307 c902213d 2022-10-29 thomas fprintf(fp, " %s", cmd->cmd_name);
309 c902213d 2022-10-29 thomas fputc('\n', fp);
312 c902213d 2022-10-29 thomas __dead static void
313 c902213d 2022-10-29 thomas usage(int hflag, int status)
315 c902213d 2022-10-29 thomas FILE *fp = (status == 0) ? stdout : stderr;
317 c691a00e 2022-11-17 thomas fprintf(fp, "usage: %s [-hV] [-f path] command [arg ...]\n",
318 c902213d 2022-10-29 thomas getprogname());
319 c902213d 2022-10-29 thomas if (hflag)
320 c902213d 2022-10-29 thomas list_commands(fp);
321 c902213d 2022-10-29 thomas exit(status);
324 c902213d 2022-10-29 thomas static const struct got_error *
325 c902213d 2022-10-29 thomas apply_unveil(const char *unix_socket_path)
327 c902213d 2022-10-29 thomas #ifdef PROFILE
328 c902213d 2022-10-29 thomas if (unveil("gmon.out", "rwc") != 0)
329 c902213d 2022-10-29 thomas return got_error_from_errno2("unveil", "gmon.out");
331 c902213d 2022-10-29 thomas if (unveil(unix_socket_path, "w") != 0)
332 c902213d 2022-10-29 thomas return got_error_from_errno2("unveil", unix_socket_path);
334 c902213d 2022-10-29 thomas if (unveil(NULL, NULL) != 0)
335 c902213d 2022-10-29 thomas return got_error_from_errno("unveil");
337 c902213d 2022-10-29 thomas return NULL;
340 c902213d 2022-10-29 thomas static int
341 c902213d 2022-10-29 thomas connect_gotd(const char *socket_path)
343 c902213d 2022-10-29 thomas const struct got_error *error = NULL;
344 c902213d 2022-10-29 thomas int gotd_sock = -1;
345 c902213d 2022-10-29 thomas struct sockaddr_un sun;
347 4f218b0c 2022-10-30 thomas error = apply_unveil(socket_path);
348 c902213d 2022-10-29 thomas if (error)
349 c902213d 2022-10-29 thomas errx(1, "%s", error->msg);
351 c902213d 2022-10-29 thomas #ifndef PROFILE
352 c902213d 2022-10-29 thomas if (pledge("stdio unix", NULL) == -1)
353 c902213d 2022-10-29 thomas err(1, "pledge");
355 c902213d 2022-10-29 thomas if ((gotd_sock = socket(AF_UNIX, SOCK_STREAM, 0)) == -1)
356 c902213d 2022-10-29 thomas err(1, "socket");
358 c902213d 2022-10-29 thomas memset(&sun, 0, sizeof(sun));
359 c902213d 2022-10-29 thomas sun.sun_family = AF_UNIX;
360 4f218b0c 2022-10-30 thomas if (strlcpy(sun.sun_path, socket_path, sizeof(sun.sun_path)) >=
361 4f218b0c 2022-10-30 thomas sizeof(sun.sun_path))
362 c902213d 2022-10-29 thomas errx(1, "gotd socket path too long");
363 c902213d 2022-10-29 thomas if (connect(gotd_sock, (struct sockaddr *)&sun, sizeof(sun)) == -1)
364 4f218b0c 2022-10-30 thomas err(1, "connect: %s", socket_path);
366 c902213d 2022-10-29 thomas #ifndef PROFILE
367 c902213d 2022-10-29 thomas if (pledge("stdio", NULL) == -1)
368 c902213d 2022-10-29 thomas err(1, "pledge");
371 c902213d 2022-10-29 thomas return gotd_sock;
375 c902213d 2022-10-29 thomas main(int argc, char *argv[])
377 c902213d 2022-10-29 thomas const struct gotctl_cmd *cmd;
378 c902213d 2022-10-29 thomas int gotd_sock = -1, i;
380 c902213d 2022-10-29 thomas int hflag = 0, Vflag = 0;
381 c902213d 2022-10-29 thomas static const struct option longopts[] = {
382 c902213d 2022-10-29 thomas { "version", no_argument, NULL, 'V' },
383 c902213d 2022-10-29 thomas { NULL, 0, NULL, 0 }
385 4f218b0c 2022-10-30 thomas const char *socket_path = GOTD_UNIX_SOCKET;
387 c902213d 2022-10-29 thomas setlocale(LC_CTYPE, "");
389 c902213d 2022-10-29 thomas #ifndef PROFILE
390 c902213d 2022-10-29 thomas if (pledge("stdio unix unveil", NULL) == -1)
391 c902213d 2022-10-29 thomas err(1, "pledge");
394 c902213d 2022-10-29 thomas while ((ch = getopt_long(argc, argv, "+hf:V", longopts, NULL)) != -1) {
395 c902213d 2022-10-29 thomas switch (ch) {
396 c902213d 2022-10-29 thomas case 'h':
397 c902213d 2022-10-29 thomas hflag = 1;
399 c902213d 2022-10-29 thomas case 'f':
400 c902213d 2022-10-29 thomas socket_path = optarg;
402 c902213d 2022-10-29 thomas case 'V':
403 c902213d 2022-10-29 thomas Vflag = 1;
406 c902213d 2022-10-29 thomas usage(hflag, 1);
407 c902213d 2022-10-29 thomas /* NOTREACHED */
411 c902213d 2022-10-29 thomas argc -= optind;
412 c902213d 2022-10-29 thomas argv += optind;
413 c902213d 2022-10-29 thomas optind = 1;
414 c902213d 2022-10-29 thomas optreset = 1;
416 c902213d 2022-10-29 thomas if (Vflag) {
417 c902213d 2022-10-29 thomas got_version_print_str();
418 c902213d 2022-10-29 thomas return 0;
421 c902213d 2022-10-29 thomas if (argc <= 0)
422 c902213d 2022-10-29 thomas usage(hflag, hflag ? 0 : 1);
424 c902213d 2022-10-29 thomas for (i = 0; i < nitems(gotctl_commands); i++) {
425 c902213d 2022-10-29 thomas const struct got_error *error;
427 c902213d 2022-10-29 thomas cmd = &gotctl_commands[i];
429 c902213d 2022-10-29 thomas if (strncmp(cmd->cmd_name, argv[0], strlen(argv[0])) != 0)
430 c902213d 2022-10-29 thomas continue;
432 c902213d 2022-10-29 thomas if (hflag)
433 c902213d 2022-10-29 thomas cmd->cmd_usage();
435 c902213d 2022-10-29 thomas gotd_sock = connect_gotd(socket_path);
436 c902213d 2022-10-29 thomas if (gotd_sock == -1)
437 c902213d 2022-10-29 thomas return 1;
438 c902213d 2022-10-29 thomas error = cmd->cmd_main(argc, argv, gotd_sock);
439 c902213d 2022-10-29 thomas close(gotd_sock);
440 c902213d 2022-10-29 thomas if (error) {
441 c902213d 2022-10-29 thomas fprintf(stderr, "%s: %s\n", getprogname(), error->msg);
442 c902213d 2022-10-29 thomas return 1;
445 c902213d 2022-10-29 thomas return 0;
448 c902213d 2022-10-29 thomas fprintf(stderr, "%s: unknown command '%s'\n", getprogname(), argv[0]);
449 c902213d 2022-10-29 thomas list_commands(stderr);
450 c902213d 2022-10-29 thomas return 1;