2 3efd8e31 2022-10-23 thomas * Copyright (c) 2022 Stefan Sperling <stsp@openbsd.org>
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.
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.
17 3efd8e31 2022-10-23 thomas #include <sys/types.h>
18 3efd8e31 2022-10-23 thomas #include <sys/queue.h>
19 3efd8e31 2022-10-23 thomas #include <sys/uio.h>
21 3efd8e31 2022-10-23 thomas #include <errno.h>
22 3efd8e31 2022-10-23 thomas #include <event.h>
23 3efd8e31 2022-10-23 thomas #include <poll.h>
24 3efd8e31 2022-10-23 thomas #include <limits.h>
25 3efd8e31 2022-10-23 thomas #include <stdio.h>
26 3efd8e31 2022-10-23 thomas #include <stdint.h>
27 3efd8e31 2022-10-23 thomas #include <stdlib.h>
28 3efd8e31 2022-10-23 thomas #include <string.h>
29 3efd8e31 2022-10-23 thomas #include <imsg.h>
30 3efd8e31 2022-10-23 thomas #include <unistd.h>
32 3efd8e31 2022-10-23 thomas #include "got_error.h"
33 3efd8e31 2022-10-23 thomas #include "got_serve.h"
34 3efd8e31 2022-10-23 thomas #include "got_path.h"
35 3efd8e31 2022-10-23 thomas #include "got_version.h"
36 3efd8e31 2022-10-23 thomas #include "got_reference.h"
37 c8ae092d 2023-02-23 thomas #include "got_object.h"
39 3efd8e31 2022-10-23 thomas #include "got_lib_pkt.h"
40 3efd8e31 2022-10-23 thomas #include "got_lib_dial.h"
41 3efd8e31 2022-10-23 thomas #include "got_lib_gitproto.h"
42 be288a59 2023-02-23 thomas #include "got_lib_hash.h"
43 3efd8e31 2022-10-23 thomas #include "got_lib_poll.h"
45 3efd8e31 2022-10-23 thomas #include "gotd.h"
47 3efd8e31 2022-10-23 thomas #ifndef nitems
48 3efd8e31 2022-10-23 thomas #define nitems(_a) (sizeof((_a)) / sizeof((_a)[0]))
51 3efd8e31 2022-10-23 thomas static const struct got_capability read_capabilities[] = {
52 3efd8e31 2022-10-23 thomas { GOT_CAPA_AGENT, "got/" GOT_VERSION_STR },
53 3efd8e31 2022-10-23 thomas { GOT_CAPA_OFS_DELTA, NULL },
54 3efd8e31 2022-10-23 thomas { GOT_CAPA_SIDE_BAND_64K, NULL },
57 3efd8e31 2022-10-23 thomas static const struct got_capability write_capabilities[] = {
58 3efd8e31 2022-10-23 thomas { GOT_CAPA_AGENT, "got/" GOT_VERSION_STR },
59 3efd8e31 2022-10-23 thomas { GOT_CAPA_OFS_DELTA, NULL },
60 3efd8e31 2022-10-23 thomas { GOT_CAPA_REPORT_STATUS, NULL },
61 3efd8e31 2022-10-23 thomas { GOT_CAPA_NO_THIN, NULL },
62 3efd8e31 2022-10-23 thomas { GOT_CAPA_DELETE_REFS, NULL },
65 214d733a 2023-01-23 thomas const struct got_error *
66 214d733a 2023-01-23 thomas got_serve_parse_command(char **command, char **repo_path, const char *gitcmd)
68 3efd8e31 2022-10-23 thomas const struct got_error *err = NULL;
69 3efd8e31 2022-10-23 thomas size_t len, cmdlen, pathlen;
70 3efd8e31 2022-10-23 thomas char *path0 = NULL, *path, *abspath = NULL, *canonpath = NULL;
71 3efd8e31 2022-10-23 thomas const char *relpath;
73 3efd8e31 2022-10-23 thomas *command = NULL;
74 3efd8e31 2022-10-23 thomas *repo_path = NULL;
76 3efd8e31 2022-10-23 thomas len = strlen(gitcmd);
78 3efd8e31 2022-10-23 thomas if (len >= strlen(GOT_SERVE_CMD_SEND) &&
79 3efd8e31 2022-10-23 thomas strncmp(gitcmd, GOT_SERVE_CMD_SEND,
80 3efd8e31 2022-10-23 thomas strlen(GOT_SERVE_CMD_SEND)) == 0)
81 3efd8e31 2022-10-23 thomas cmdlen = strlen(GOT_SERVE_CMD_SEND);
82 3efd8e31 2022-10-23 thomas else if (len >= strlen(GOT_SERVE_CMD_FETCH) &&
83 3efd8e31 2022-10-23 thomas strncmp(gitcmd, GOT_SERVE_CMD_FETCH,
84 3efd8e31 2022-10-23 thomas strlen(GOT_SERVE_CMD_FETCH)) == 0)
85 3efd8e31 2022-10-23 thomas cmdlen = strlen(GOT_SERVE_CMD_FETCH);
87 3efd8e31 2022-10-23 thomas return got_error(GOT_ERR_BAD_PACKET);
89 3efd8e31 2022-10-23 thomas if (len <= cmdlen + 1 || gitcmd[cmdlen] != ' ')
90 3efd8e31 2022-10-23 thomas return got_error(GOT_ERR_BAD_PACKET);
92 3efd8e31 2022-10-23 thomas if (memchr(&gitcmd[cmdlen + 1], '\0', len - cmdlen) == NULL)
93 3efd8e31 2022-10-23 thomas return got_error(GOT_ERR_BAD_PATH);
95 3efd8e31 2022-10-23 thomas /* Forbid linefeeds in paths, like Git does. */
96 3efd8e31 2022-10-23 thomas if (memchr(&gitcmd[cmdlen + 1], '\n', len - cmdlen) != NULL)
97 3efd8e31 2022-10-23 thomas return got_error(GOT_ERR_BAD_PATH);
99 3efd8e31 2022-10-23 thomas path0 = strdup(&gitcmd[cmdlen + 1]);
100 3efd8e31 2022-10-23 thomas if (path0 == NULL)
101 3efd8e31 2022-10-23 thomas return got_error_from_errno("strdup");
102 3efd8e31 2022-10-23 thomas path = path0;
103 3efd8e31 2022-10-23 thomas pathlen = strlen(path);
106 3efd8e31 2022-10-23 thomas * Git clients send a shell command.
107 3efd8e31 2022-10-23 thomas * Trim spaces and quotes around the path.
109 3efd8e31 2022-10-23 thomas while (path[0] == '\'' || path[0] == '\"' || path[0] == ' ') {
111 3efd8e31 2022-10-23 thomas pathlen--;
113 3efd8e31 2022-10-23 thomas while (pathlen > 0 &&
114 3efd8e31 2022-10-23 thomas (path[pathlen - 1] == '\'' || path[pathlen - 1] == '\"' ||
115 3efd8e31 2022-10-23 thomas path[pathlen - 1] == ' ')) {
116 3efd8e31 2022-10-23 thomas path[pathlen - 1] = '\0';
117 3efd8e31 2022-10-23 thomas pathlen--;
120 3efd8e31 2022-10-23 thomas /* Deny an empty repository path. */
121 3efd8e31 2022-10-23 thomas if (path[0] == '\0' || got_path_is_root_dir(path)) {
122 3efd8e31 2022-10-23 thomas err = got_error(GOT_ERR_NOT_GIT_REPO);
123 3efd8e31 2022-10-23 thomas goto done;
126 3efd8e31 2022-10-23 thomas if (asprintf(&abspath, "/%s", path) == -1) {
127 3efd8e31 2022-10-23 thomas err = got_error_from_errno("asprintf");
128 3efd8e31 2022-10-23 thomas goto done;
130 3efd8e31 2022-10-23 thomas pathlen = strlen(abspath);
131 bf2e865d 2023-04-01 thomas canonpath = malloc(pathlen + 1);
132 3efd8e31 2022-10-23 thomas if (canonpath == NULL) {
133 3efd8e31 2022-10-23 thomas err = got_error_from_errno("malloc");
134 3efd8e31 2022-10-23 thomas goto done;
136 bf2e865d 2023-04-01 thomas err = got_canonpath(abspath, canonpath, pathlen + 1);
138 3efd8e31 2022-10-23 thomas goto done;
140 3efd8e31 2022-10-23 thomas relpath = canonpath;
141 3efd8e31 2022-10-23 thomas while (relpath[0] == '/')
142 3efd8e31 2022-10-23 thomas relpath++;
143 3efd8e31 2022-10-23 thomas *repo_path = strdup(relpath);
144 3efd8e31 2022-10-23 thomas if (*repo_path == NULL) {
145 3efd8e31 2022-10-23 thomas err = got_error_from_errno("strdup");
146 3efd8e31 2022-10-23 thomas goto done;
148 3efd8e31 2022-10-23 thomas *command = strndup(gitcmd, cmdlen);
149 3efd8e31 2022-10-23 thomas if (*command == NULL)
150 3efd8e31 2022-10-23 thomas err = got_error_from_errno("strndup");
152 3efd8e31 2022-10-23 thomas free(path0);
153 3efd8e31 2022-10-23 thomas free(abspath);
154 3efd8e31 2022-10-23 thomas free(canonpath);
155 3efd8e31 2022-10-23 thomas if (err) {
156 3efd8e31 2022-10-23 thomas free(*repo_path);
157 3efd8e31 2022-10-23 thomas *repo_path = NULL;
159 3efd8e31 2022-10-23 thomas return err;
162 3efd8e31 2022-10-23 thomas static const struct got_error *
163 3efd8e31 2022-10-23 thomas append_read_capabilities(size_t *capalen, size_t len, const char *symrefstr,
164 3efd8e31 2022-10-23 thomas uint8_t *buf, size_t bufsize)
166 3efd8e31 2022-10-23 thomas struct got_capability capa[nitems(read_capabilities) + 1];
167 3efd8e31 2022-10-23 thomas size_t ncapa;
169 3efd8e31 2022-10-23 thomas memcpy(&capa, read_capabilities, sizeof(read_capabilities));
170 3efd8e31 2022-10-23 thomas if (symrefstr) {
171 3efd8e31 2022-10-23 thomas capa[nitems(read_capabilities)].key = "symref";
172 3efd8e31 2022-10-23 thomas capa[nitems(read_capabilities)].value = symrefstr;
173 3efd8e31 2022-10-23 thomas ncapa = nitems(capa);
175 3efd8e31 2022-10-23 thomas ncapa = nitems(read_capabilities);
177 3efd8e31 2022-10-23 thomas return got_gitproto_append_capabilities(capalen, buf, len,
178 3efd8e31 2022-10-23 thomas bufsize, capa, ncapa);
181 3efd8e31 2022-10-23 thomas static const struct got_error *
182 3efd8e31 2022-10-23 thomas send_ref(int outfd, uint8_t *id, const char *refname, int send_capabilities,
183 3efd8e31 2022-10-23 thomas int client_is_reading, const char *symrefstr, int chattygot)
185 3efd8e31 2022-10-23 thomas const struct got_error *err = NULL;
186 3efd8e31 2022-10-23 thomas char hex[SHA1_DIGEST_STRING_LENGTH];
187 3efd8e31 2022-10-23 thomas char buf[GOT_PKT_MAX];
188 3efd8e31 2022-10-23 thomas size_t len, capalen = 0;
190 946e0798 2022-11-06 thomas if (got_sha1_digest_to_str(id, hex, sizeof(hex)) == NULL)
191 3efd8e31 2022-10-23 thomas return got_error(GOT_ERR_BAD_OBJ_ID);
193 3efd8e31 2022-10-23 thomas len = snprintf(buf, sizeof(buf), "%s %s", hex, refname);
194 3efd8e31 2022-10-23 thomas if (len >= sizeof(buf))
195 3efd8e31 2022-10-23 thomas return got_error(GOT_ERR_NO_SPACE);
197 3efd8e31 2022-10-23 thomas if (send_capabilities) {
198 3efd8e31 2022-10-23 thomas if (client_is_reading) {
199 3efd8e31 2022-10-23 thomas err = append_read_capabilities(&capalen, len,
200 3efd8e31 2022-10-23 thomas symrefstr, buf, sizeof(buf));
202 3efd8e31 2022-10-23 thomas err = got_gitproto_append_capabilities(&capalen,
203 3efd8e31 2022-10-23 thomas buf, len, sizeof(buf), write_capabilities,
204 3efd8e31 2022-10-23 thomas nitems(write_capabilities));
207 3efd8e31 2022-10-23 thomas return err;
208 3efd8e31 2022-10-23 thomas len += capalen;
211 3efd8e31 2022-10-23 thomas if (len + 1 >= sizeof(buf))
212 3efd8e31 2022-10-23 thomas return got_error(GOT_ERR_NO_SPACE);
213 3efd8e31 2022-10-23 thomas buf[len] = '\n';
215 3efd8e31 2022-10-23 thomas buf[len] = '\0';
217 3efd8e31 2022-10-23 thomas return got_pkt_writepkt(outfd, buf, len, chattygot);
220 3efd8e31 2022-10-23 thomas static const struct got_error *
221 2a0fb198 2022-11-08 thomas send_zero_refs(int outfd, int client_is_reading, int chattygot)
223 3efd8e31 2022-10-23 thomas const struct got_error *err = NULL;
224 4c4f6843 2023-02-20 thomas const char *line = GOT_SHA1_STRING_ZERO " capabilities^{}";
225 3efd8e31 2022-10-23 thomas char buf[GOT_PKT_MAX];
226 3efd8e31 2022-10-23 thomas size_t len, capalen = 0;
228 4c4f6843 2023-02-20 thomas len = strlcpy(buf, line, sizeof(buf));
229 3efd8e31 2022-10-23 thomas if (len >= sizeof(buf))
230 3efd8e31 2022-10-23 thomas return got_error(GOT_ERR_NO_SPACE);
232 2a0fb198 2022-11-08 thomas if (client_is_reading) {
233 2a0fb198 2022-11-08 thomas err = got_gitproto_append_capabilities(&capalen, buf, len,
234 2a0fb198 2022-11-08 thomas sizeof(buf), read_capabilities, nitems(read_capabilities));
236 2a0fb198 2022-11-08 thomas return err;
238 2a0fb198 2022-11-08 thomas err = got_gitproto_append_capabilities(&capalen, buf, len,
239 2a0fb198 2022-11-08 thomas sizeof(buf), write_capabilities,
240 2a0fb198 2022-11-08 thomas nitems(write_capabilities));
242 2a0fb198 2022-11-08 thomas return err;
245 ea1f0585 2022-11-07 thomas return got_pkt_writepkt(outfd, buf, len + capalen, chattygot);
248 3efd8e31 2022-10-23 thomas static void
249 3efd8e31 2022-10-23 thomas echo_error(const struct got_error *err, int outfd, int chattygot)
251 3efd8e31 2022-10-23 thomas char buf[4 + GOT_ERR_MAX_MSG_SIZE];
252 3efd8e31 2022-10-23 thomas size_t len;
255 3efd8e31 2022-10-23 thomas * Echo the error to the client on a pkt-line.
256 3efd8e31 2022-10-23 thomas * The client should then terminate its session.
258 3efd8e31 2022-10-23 thomas buf[0] = 'E'; buf[1] = 'R'; buf[2] = 'R'; buf[3] = ' '; buf[4] = '\0';
259 3efd8e31 2022-10-23 thomas len = strlcat(buf, err->msg, sizeof(buf));
260 911f5cd5 2022-12-08 thomas got_pkt_writepkt(outfd, buf, len, chattygot);
263 3efd8e31 2022-10-23 thomas static const struct got_error *
264 3efd8e31 2022-10-23 thomas announce_refs(int outfd, struct imsgbuf *ibuf, int client_is_reading,
265 3efd8e31 2022-10-23 thomas const char *repo_path, int chattygot)
267 3efd8e31 2022-10-23 thomas const struct got_error *err = NULL;
268 3efd8e31 2022-10-23 thomas struct imsg imsg;
269 3efd8e31 2022-10-23 thomas size_t datalen;
270 3efd8e31 2022-10-23 thomas struct gotd_imsg_list_refs lsref;
271 3efd8e31 2022-10-23 thomas struct gotd_imsg_reflist ireflist;
272 3efd8e31 2022-10-23 thomas struct gotd_imsg_ref iref;
273 3efd8e31 2022-10-23 thomas struct gotd_imsg_symref isymref;
274 3efd8e31 2022-10-23 thomas size_t nrefs = 0;
275 3efd8e31 2022-10-23 thomas int have_nrefs = 0, sent_capabilities = 0;
276 3efd8e31 2022-10-23 thomas char *symrefname = NULL, *symreftarget = NULL, *symrefstr = NULL;
277 3efd8e31 2022-10-23 thomas char *refname = NULL;
279 3efd8e31 2022-10-23 thomas memset(&imsg, 0, sizeof(imsg));
280 3efd8e31 2022-10-23 thomas memset(&lsref, 0, sizeof(lsref));
282 3efd8e31 2022-10-23 thomas if (strlcpy(lsref.repo_name, repo_path, sizeof(lsref.repo_name)) >=
283 3efd8e31 2022-10-23 thomas sizeof(lsref.repo_name))
284 3efd8e31 2022-10-23 thomas return got_error(GOT_ERR_NO_SPACE);
285 3efd8e31 2022-10-23 thomas lsref.client_is_reading = client_is_reading;
287 3efd8e31 2022-10-23 thomas if (imsg_compose(ibuf, GOTD_IMSG_LIST_REFS, 0, 0, -1,
288 3efd8e31 2022-10-23 thomas &lsref, sizeof(lsref)) == -1)
289 3efd8e31 2022-10-23 thomas return got_error_from_errno("imsg_compose LIST_REFS");
291 3efd8e31 2022-10-23 thomas err = gotd_imsg_flush(ibuf);
293 3efd8e31 2022-10-23 thomas return err;
295 3efd8e31 2022-10-23 thomas while (!have_nrefs || nrefs > 0) {
296 3efd8e31 2022-10-23 thomas err = gotd_imsg_poll_recv(&imsg, ibuf, 0);
298 3efd8e31 2022-10-23 thomas goto done;
299 3efd8e31 2022-10-23 thomas datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
300 3efd8e31 2022-10-23 thomas switch (imsg.hdr.type) {
301 3efd8e31 2022-10-23 thomas case GOTD_IMSG_ERROR:
302 3efd8e31 2022-10-23 thomas err = gotd_imsg_recv_error(NULL, &imsg);
303 3efd8e31 2022-10-23 thomas goto done;
304 3efd8e31 2022-10-23 thomas case GOTD_IMSG_REFLIST:
305 3efd8e31 2022-10-23 thomas if (have_nrefs || nrefs > 0) {
306 3efd8e31 2022-10-23 thomas err = got_error(GOT_ERR_PRIVSEP_MSG);
307 3efd8e31 2022-10-23 thomas goto done;
309 3efd8e31 2022-10-23 thomas if (datalen != sizeof(ireflist)) {
310 3efd8e31 2022-10-23 thomas err = got_error(GOT_ERR_PRIVSEP_MSG);
311 3efd8e31 2022-10-23 thomas goto done;
313 3efd8e31 2022-10-23 thomas memcpy(&ireflist, imsg.data, sizeof(ireflist));
314 3efd8e31 2022-10-23 thomas nrefs = ireflist.nrefs;
315 3efd8e31 2022-10-23 thomas have_nrefs = 1;
316 3efd8e31 2022-10-23 thomas if (nrefs == 0)
317 2a0fb198 2022-11-08 thomas err = send_zero_refs(outfd, client_is_reading,
318 2a0fb198 2022-11-08 thomas chattygot);
320 3efd8e31 2022-10-23 thomas case GOTD_IMSG_REF:
321 3efd8e31 2022-10-23 thomas if (!have_nrefs || nrefs == 0) {
322 3efd8e31 2022-10-23 thomas err = got_error(GOT_ERR_PRIVSEP_MSG);
323 3efd8e31 2022-10-23 thomas goto done;
325 3efd8e31 2022-10-23 thomas if (datalen < sizeof(iref)) {
326 3efd8e31 2022-10-23 thomas err = got_error(GOT_ERR_PRIVSEP_MSG);
327 3efd8e31 2022-10-23 thomas goto done;
329 3efd8e31 2022-10-23 thomas memcpy(&iref, imsg.data, sizeof(iref));
330 3efd8e31 2022-10-23 thomas if (datalen != sizeof(iref) + iref.name_len) {
331 3efd8e31 2022-10-23 thomas err = got_error(GOT_ERR_PRIVSEP_LEN);
332 3efd8e31 2022-10-23 thomas goto done;
334 fcbb06bf 2023-01-14 thomas refname = strndup(imsg.data + sizeof(iref),
335 fcbb06bf 2023-01-14 thomas iref.name_len);
336 3efd8e31 2022-10-23 thomas if (refname == NULL) {
337 fcbb06bf 2023-01-14 thomas err = got_error_from_errno("strndup");
338 3efd8e31 2022-10-23 thomas goto done;
340 3efd8e31 2022-10-23 thomas err = send_ref(outfd, iref.id, refname,
341 3efd8e31 2022-10-23 thomas !sent_capabilities, client_is_reading,
342 3efd8e31 2022-10-23 thomas NULL, chattygot);
343 3efd8e31 2022-10-23 thomas free(refname);
344 3efd8e31 2022-10-23 thomas refname = NULL;
346 3efd8e31 2022-10-23 thomas goto done;
347 3efd8e31 2022-10-23 thomas sent_capabilities = 1;
348 3efd8e31 2022-10-23 thomas if (nrefs > 0)
351 3efd8e31 2022-10-23 thomas case GOTD_IMSG_SYMREF:
352 3efd8e31 2022-10-23 thomas if (!have_nrefs || nrefs == 0) {
353 3efd8e31 2022-10-23 thomas err = got_error(GOT_ERR_PRIVSEP_MSG);
354 3efd8e31 2022-10-23 thomas goto done;
356 3efd8e31 2022-10-23 thomas if (datalen < sizeof(isymref)) {
357 3efd8e31 2022-10-23 thomas err = got_error(GOT_ERR_PRIVSEP_LEN);
358 3efd8e31 2022-10-23 thomas goto done;
360 3efd8e31 2022-10-23 thomas memcpy(&isymref, imsg.data, sizeof(isymref));
361 3efd8e31 2022-10-23 thomas if (datalen != sizeof(isymref) + isymref.name_len +
362 3efd8e31 2022-10-23 thomas isymref.target_len) {
363 3efd8e31 2022-10-23 thomas err = got_error(GOT_ERR_PRIVSEP_LEN);
364 3efd8e31 2022-10-23 thomas goto done;
368 3efd8e31 2022-10-23 thomas * For now, we only announce one symbolic ref,
369 3efd8e31 2022-10-23 thomas * as part of our capability advertisement.
371 3efd8e31 2022-10-23 thomas if (sent_capabilities || symrefstr != NULL ||
372 3efd8e31 2022-10-23 thomas symrefname != NULL || symreftarget != NULL)
375 fcbb06bf 2023-01-14 thomas symrefname = strndup(imsg.data + sizeof(isymref),
376 fcbb06bf 2023-01-14 thomas isymref.name_len);
377 3efd8e31 2022-10-23 thomas if (symrefname == NULL) {
378 3efd8e31 2022-10-23 thomas err = got_error_from_errno("malloc");
379 3efd8e31 2022-10-23 thomas goto done;
382 fcbb06bf 2023-01-14 thomas symreftarget = strndup(
383 fcbb06bf 2023-01-14 thomas imsg.data + sizeof(isymref) + isymref.name_len,
384 fcbb06bf 2023-01-14 thomas isymref.target_len);
385 3efd8e31 2022-10-23 thomas if (symreftarget == NULL) {
386 fcbb06bf 2023-01-14 thomas err = got_error_from_errno("strndup");
387 3efd8e31 2022-10-23 thomas goto done;
390 3efd8e31 2022-10-23 thomas if (asprintf(&symrefstr, "%s:%s", symrefname,
391 3efd8e31 2022-10-23 thomas symreftarget) == -1) {
392 3efd8e31 2022-10-23 thomas err = got_error_from_errno("asprintf");
393 3efd8e31 2022-10-23 thomas goto done;
395 3efd8e31 2022-10-23 thomas err = send_ref(outfd, isymref.target_id, symrefname,
396 3efd8e31 2022-10-23 thomas !sent_capabilities, client_is_reading, symrefstr,
397 3efd8e31 2022-10-23 thomas chattygot);
398 3efd8e31 2022-10-23 thomas free(refname);
399 3efd8e31 2022-10-23 thomas refname = NULL;
401 3efd8e31 2022-10-23 thomas goto done;
402 3efd8e31 2022-10-23 thomas sent_capabilities = 1;
403 3efd8e31 2022-10-23 thomas if (nrefs > 0)
407 3efd8e31 2022-10-23 thomas err = got_error(GOT_ERR_PRIVSEP_MSG);
411 3efd8e31 2022-10-23 thomas imsg_free(&imsg);
414 3efd8e31 2022-10-23 thomas err = got_pkt_flushpkt(outfd, chattygot);
416 3efd8e31 2022-10-23 thomas goto done;
418 3efd8e31 2022-10-23 thomas free(symrefstr);
419 3efd8e31 2022-10-23 thomas free(symrefname);
420 3efd8e31 2022-10-23 thomas free(symreftarget);
421 3efd8e31 2022-10-23 thomas return err;
424 3efd8e31 2022-10-23 thomas static const struct got_error *
425 3efd8e31 2022-10-23 thomas parse_want_line(char **common_capabilities, uint8_t *id, char *buf, size_t len)
427 3efd8e31 2022-10-23 thomas const struct got_error *err;
428 3efd8e31 2022-10-23 thomas char *id_str = NULL, *client_capabilities = NULL;
430 3efd8e31 2022-10-23 thomas err = got_gitproto_parse_want_line(&id_str,
431 3efd8e31 2022-10-23 thomas &client_capabilities, buf, len);
433 3efd8e31 2022-10-23 thomas return err;
435 c8ae092d 2023-02-23 thomas if (!got_parse_hash_digest(id, id_str, GOT_HASH_SHA1)) {
436 3efd8e31 2022-10-23 thomas err = got_error_msg(GOT_ERR_BAD_PACKET,
437 3efd8e31 2022-10-23 thomas "want-line with bad object ID");
438 3efd8e31 2022-10-23 thomas goto done;
441 3efd8e31 2022-10-23 thomas if (client_capabilities) {
442 3efd8e31 2022-10-23 thomas err = got_gitproto_match_capabilities(common_capabilities,
443 3efd8e31 2022-10-23 thomas NULL, client_capabilities, read_capabilities,
444 3efd8e31 2022-10-23 thomas nitems(read_capabilities));
446 3efd8e31 2022-10-23 thomas goto done;
449 3efd8e31 2022-10-23 thomas free(id_str);
450 3efd8e31 2022-10-23 thomas free(client_capabilities);
451 3efd8e31 2022-10-23 thomas return err;
454 3efd8e31 2022-10-23 thomas static const struct got_error *
455 3efd8e31 2022-10-23 thomas parse_have_line(uint8_t *id, char *buf, size_t len)
457 3efd8e31 2022-10-23 thomas const struct got_error *err;
458 3efd8e31 2022-10-23 thomas char *id_str = NULL;
460 3efd8e31 2022-10-23 thomas err = got_gitproto_parse_have_line(&id_str, buf, len);
462 3efd8e31 2022-10-23 thomas return err;
464 c8ae092d 2023-02-23 thomas if (!got_parse_hash_digest(id, id_str, GOT_HASH_SHA1)) {
465 3efd8e31 2022-10-23 thomas err = got_error_msg(GOT_ERR_BAD_PACKET,
466 3efd8e31 2022-10-23 thomas "have-line with bad object ID");
467 3efd8e31 2022-10-23 thomas goto done;
470 3efd8e31 2022-10-23 thomas free(id_str);
471 3efd8e31 2022-10-23 thomas return err;
474 3efd8e31 2022-10-23 thomas static const struct got_error *
475 3efd8e31 2022-10-23 thomas send_capability(struct got_capability *capa, struct imsgbuf *ibuf)
477 3efd8e31 2022-10-23 thomas const struct got_error *err = NULL;
478 3efd8e31 2022-10-23 thomas struct gotd_imsg_capability icapa;
479 3efd8e31 2022-10-23 thomas size_t len;
480 3efd8e31 2022-10-23 thomas struct ibuf *wbuf;
482 3efd8e31 2022-10-23 thomas memset(&icapa, 0, sizeof(icapa));
484 3efd8e31 2022-10-23 thomas icapa.key_len = strlen(capa->key);
485 3efd8e31 2022-10-23 thomas len = sizeof(icapa) + icapa.key_len;
486 3efd8e31 2022-10-23 thomas if (capa->value) {
487 3efd8e31 2022-10-23 thomas icapa.value_len = strlen(capa->value);
488 3efd8e31 2022-10-23 thomas len += icapa.value_len;
491 3efd8e31 2022-10-23 thomas wbuf = imsg_create(ibuf, GOTD_IMSG_CAPABILITY, 0, 0, len);
492 3efd8e31 2022-10-23 thomas if (wbuf == NULL) {
493 3efd8e31 2022-10-23 thomas err = got_error_from_errno("imsg_create CAPABILITY");
494 3efd8e31 2022-10-23 thomas return err;
497 3efd8e31 2022-10-23 thomas if (imsg_add(wbuf, &icapa, sizeof(icapa)) == -1)
498 3efd8e31 2022-10-23 thomas return got_error_from_errno("imsg_add CAPABILITY");
499 3efd8e31 2022-10-23 thomas if (imsg_add(wbuf, capa->key, icapa.key_len) == -1)
500 3efd8e31 2022-10-23 thomas return got_error_from_errno("imsg_add CAPABILITY");
501 3efd8e31 2022-10-23 thomas if (capa->value) {
502 3efd8e31 2022-10-23 thomas if (imsg_add(wbuf, capa->value, icapa.value_len) == -1)
503 3efd8e31 2022-10-23 thomas return got_error_from_errno("imsg_add CAPABILITY");
506 3efd8e31 2022-10-23 thomas wbuf->fd = -1;
507 3efd8e31 2022-10-23 thomas imsg_close(ibuf, wbuf);
509 3efd8e31 2022-10-23 thomas return NULL;
512 3efd8e31 2022-10-23 thomas static const struct got_error *
513 3efd8e31 2022-10-23 thomas send_capabilities(int *use_sidebands, int *report_status,
514 3efd8e31 2022-10-23 thomas char *capabilities_str, struct imsgbuf *ibuf)
516 3efd8e31 2022-10-23 thomas const struct got_error *err = NULL;
517 3efd8e31 2022-10-23 thomas struct gotd_imsg_capabilities icapas;
518 3efd8e31 2022-10-23 thomas struct got_capability *capa = NULL;
519 3efd8e31 2022-10-23 thomas size_t ncapa, i;
521 3efd8e31 2022-10-23 thomas err = got_gitproto_split_capabilities_str(&capa, &ncapa,
522 3efd8e31 2022-10-23 thomas capabilities_str);
524 3efd8e31 2022-10-23 thomas return err;
526 3efd8e31 2022-10-23 thomas icapas.ncapabilities = ncapa;
527 3efd8e31 2022-10-23 thomas if (imsg_compose(ibuf, GOTD_IMSG_CAPABILITIES, 0, 0, -1,
528 3efd8e31 2022-10-23 thomas &icapas, sizeof(icapas)) == -1) {
529 3efd8e31 2022-10-23 thomas err = got_error_from_errno("imsg_compose IMSG_CAPABILITIES");
530 3efd8e31 2022-10-23 thomas goto done;
533 3efd8e31 2022-10-23 thomas for (i = 0; i < ncapa; i++) {
534 3efd8e31 2022-10-23 thomas err = send_capability(&capa[i], ibuf);
536 3efd8e31 2022-10-23 thomas goto done;
537 3efd8e31 2022-10-23 thomas if (use_sidebands &&
538 3efd8e31 2022-10-23 thomas strcmp(capa[i].key, GOT_CAPA_SIDE_BAND_64K) == 0)
539 3efd8e31 2022-10-23 thomas *use_sidebands = 1;
540 3efd8e31 2022-10-23 thomas if (report_status &&
541 3efd8e31 2022-10-23 thomas strcmp(capa[i].key, GOT_CAPA_REPORT_STATUS) == 0)
542 3efd8e31 2022-10-23 thomas *report_status = 1;
545 3efd8e31 2022-10-23 thomas free(capa);
546 3efd8e31 2022-10-23 thomas return err;
549 3efd8e31 2022-10-23 thomas static const struct got_error *
550 3efd8e31 2022-10-23 thomas forward_flushpkt(struct imsgbuf *ibuf)
552 3efd8e31 2022-10-23 thomas if (imsg_compose(ibuf, GOTD_IMSG_FLUSH, 0, 0, -1, NULL, 0) == -1)
553 3efd8e31 2022-10-23 thomas return got_error_from_errno("imsg_compose FLUSH");
555 3efd8e31 2022-10-23 thomas return gotd_imsg_flush(ibuf);
558 3efd8e31 2022-10-23 thomas static const struct got_error *
559 3efd8e31 2022-10-23 thomas recv_ack(struct imsg *imsg, uint8_t *expected_id)
561 3efd8e31 2022-10-23 thomas struct gotd_imsg_ack iack;
562 3efd8e31 2022-10-23 thomas size_t datalen;
564 3efd8e31 2022-10-23 thomas datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
565 3efd8e31 2022-10-23 thomas if (datalen != sizeof(iack))
566 3efd8e31 2022-10-23 thomas return got_error(GOT_ERR_PRIVSEP_LEN);
568 3efd8e31 2022-10-23 thomas memcpy(&iack, imsg->data, sizeof(iack));
569 3efd8e31 2022-10-23 thomas if (memcmp(iack.object_id, expected_id, SHA1_DIGEST_LENGTH) != 0)
570 3efd8e31 2022-10-23 thomas return got_error(GOT_ERR_BAD_OBJ_ID);
572 3efd8e31 2022-10-23 thomas return NULL;
575 3efd8e31 2022-10-23 thomas static const struct got_error *
576 3efd8e31 2022-10-23 thomas recv_nak(struct imsg *imsg, uint8_t *expected_id)
578 3efd8e31 2022-10-23 thomas struct gotd_imsg_ack inak;
579 3efd8e31 2022-10-23 thomas size_t datalen;
581 3efd8e31 2022-10-23 thomas datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
582 3efd8e31 2022-10-23 thomas if (datalen != sizeof(inak))
583 3efd8e31 2022-10-23 thomas return got_error(GOT_ERR_PRIVSEP_LEN);
585 3efd8e31 2022-10-23 thomas memcpy(&inak, imsg->data, sizeof(inak));
586 3efd8e31 2022-10-23 thomas if (memcmp(inak.object_id, expected_id, SHA1_DIGEST_LENGTH) != 0)
587 3efd8e31 2022-10-23 thomas return got_error(GOT_ERR_BAD_OBJ_ID);
589 3efd8e31 2022-10-23 thomas return NULL;
593 3efd8e31 2022-10-23 thomas static const struct got_error *
594 3efd8e31 2022-10-23 thomas recv_want(int *use_sidebands, int outfd, struct imsgbuf *ibuf,
595 3efd8e31 2022-10-23 thomas char *buf, size_t len, int expect_capabilities, int chattygot)
597 3efd8e31 2022-10-23 thomas const struct got_error *err;
598 3efd8e31 2022-10-23 thomas struct gotd_imsg_want iwant;
599 3efd8e31 2022-10-23 thomas char *capabilities_str;
600 3efd8e31 2022-10-23 thomas int done = 0;
601 3efd8e31 2022-10-23 thomas struct imsg imsg;
603 3efd8e31 2022-10-23 thomas memset(&iwant, 0, sizeof(iwant));
604 3efd8e31 2022-10-23 thomas memset(&imsg, 0, sizeof(imsg));
606 3efd8e31 2022-10-23 thomas err = parse_want_line(&capabilities_str, iwant.object_id, buf, len);
608 3efd8e31 2022-10-23 thomas return err;
610 3efd8e31 2022-10-23 thomas if (capabilities_str) {
611 3efd8e31 2022-10-23 thomas if (!expect_capabilities) {
612 3efd8e31 2022-10-23 thomas err = got_error_msg(GOT_ERR_BAD_PACKET,
613 3efd8e31 2022-10-23 thomas "unexpected capability announcement received");
614 3efd8e31 2022-10-23 thomas goto done;
616 3efd8e31 2022-10-23 thomas err = send_capabilities(use_sidebands, NULL, capabilities_str,
619 3efd8e31 2022-10-23 thomas goto done;
623 3efd8e31 2022-10-23 thomas if (imsg_compose(ibuf, GOTD_IMSG_WANT, 0, 0, -1,
624 3efd8e31 2022-10-23 thomas &iwant, sizeof(iwant)) == -1) {
625 3efd8e31 2022-10-23 thomas err = got_error_from_errno("imsg_compose WANT");
626 3efd8e31 2022-10-23 thomas goto done;
629 3efd8e31 2022-10-23 thomas err = gotd_imsg_flush(ibuf);
631 3efd8e31 2022-10-23 thomas goto done;
634 3efd8e31 2022-10-23 thomas * Wait for an ACK, or an error in case the desired object
635 3efd8e31 2022-10-23 thomas * does not exist.
637 3efd8e31 2022-10-23 thomas while (!done && err == NULL) {
638 3efd8e31 2022-10-23 thomas err = gotd_imsg_poll_recv(&imsg, ibuf, 0);
641 3efd8e31 2022-10-23 thomas switch (imsg.hdr.type) {
642 3efd8e31 2022-10-23 thomas case GOTD_IMSG_ERROR:
643 3efd8e31 2022-10-23 thomas err = gotd_imsg_recv_error(NULL, &imsg);
645 3efd8e31 2022-10-23 thomas case GOTD_IMSG_ACK:
646 3efd8e31 2022-10-23 thomas err = recv_ack(&imsg, iwant.object_id);
649 3efd8e31 2022-10-23 thomas done = 1;
652 3efd8e31 2022-10-23 thomas err = got_error(GOT_ERR_PRIVSEP_MSG);
656 3efd8e31 2022-10-23 thomas imsg_free(&imsg);
659 3efd8e31 2022-10-23 thomas free(capabilities_str);
660 3efd8e31 2022-10-23 thomas return err;
663 3efd8e31 2022-10-23 thomas static const struct got_error *
664 3efd8e31 2022-10-23 thomas send_ack(int outfd, uint8_t *id, int chattygot)
666 3efd8e31 2022-10-23 thomas char hex[SHA1_DIGEST_STRING_LENGTH];
667 3efd8e31 2022-10-23 thomas char buf[GOT_PKT_MAX];
670 946e0798 2022-11-06 thomas if (got_sha1_digest_to_str(id, hex, sizeof(hex)) == NULL)
671 3efd8e31 2022-10-23 thomas return got_error(GOT_ERR_BAD_OBJ_ID);
673 3efd8e31 2022-10-23 thomas len = snprintf(buf, sizeof(buf), "ACK %s\n", hex);
674 3efd8e31 2022-10-23 thomas if (len >= sizeof(buf))
675 3efd8e31 2022-10-23 thomas return got_error(GOT_ERR_NO_SPACE);
677 3efd8e31 2022-10-23 thomas return got_pkt_writepkt(outfd, buf, len, chattygot);
680 3efd8e31 2022-10-23 thomas static const struct got_error *
681 3efd8e31 2022-10-23 thomas send_nak(int outfd, int chattygot)
683 3efd8e31 2022-10-23 thomas char buf[5];
686 3efd8e31 2022-10-23 thomas len = snprintf(buf, sizeof(buf), "NAK\n");
687 3efd8e31 2022-10-23 thomas if (len >= sizeof(buf))
688 3efd8e31 2022-10-23 thomas return got_error(GOT_ERR_NO_SPACE);
690 3efd8e31 2022-10-23 thomas return got_pkt_writepkt(outfd, buf, len, chattygot);
693 3efd8e31 2022-10-23 thomas static const struct got_error *
694 3efd8e31 2022-10-23 thomas recv_have(int *have_ack, int outfd, struct imsgbuf *ibuf, char *buf,
695 3efd8e31 2022-10-23 thomas size_t len, int chattygot)
697 3efd8e31 2022-10-23 thomas const struct got_error *err;
698 3efd8e31 2022-10-23 thomas struct gotd_imsg_have ihave;
699 3efd8e31 2022-10-23 thomas int done = 0;
700 3efd8e31 2022-10-23 thomas struct imsg imsg;
702 3efd8e31 2022-10-23 thomas memset(&ihave, 0, sizeof(ihave));
703 3efd8e31 2022-10-23 thomas memset(&imsg, 0, sizeof(imsg));
705 3efd8e31 2022-10-23 thomas err = parse_have_line(ihave.object_id, buf, len);
707 3efd8e31 2022-10-23 thomas return err;
709 3efd8e31 2022-10-23 thomas if (imsg_compose(ibuf, GOTD_IMSG_HAVE, 0, 0, -1,
710 3efd8e31 2022-10-23 thomas &ihave, sizeof(ihave)) == -1)
711 3efd8e31 2022-10-23 thomas return got_error_from_errno("imsg_compose HAVE");
713 3efd8e31 2022-10-23 thomas err = gotd_imsg_flush(ibuf);
715 3efd8e31 2022-10-23 thomas return err;
718 3efd8e31 2022-10-23 thomas * Wait for an ACK or a NAK, indicating whether a common
719 3efd8e31 2022-10-23 thomas * commit object has been found.
721 3efd8e31 2022-10-23 thomas while (!done && err == NULL) {
722 3efd8e31 2022-10-23 thomas err = gotd_imsg_poll_recv(&imsg, ibuf, 0);
724 3efd8e31 2022-10-23 thomas return err;
725 3efd8e31 2022-10-23 thomas switch (imsg.hdr.type) {
726 3efd8e31 2022-10-23 thomas case GOTD_IMSG_ERROR:
727 3efd8e31 2022-10-23 thomas err = gotd_imsg_recv_error(NULL, &imsg);
729 3efd8e31 2022-10-23 thomas case GOTD_IMSG_ACK:
730 3efd8e31 2022-10-23 thomas err = recv_ack(&imsg, ihave.object_id);
733 3efd8e31 2022-10-23 thomas if (!*have_ack) {
734 3efd8e31 2022-10-23 thomas err = send_ack(outfd, ihave.object_id,
735 3efd8e31 2022-10-23 thomas chattygot);
737 3efd8e31 2022-10-23 thomas return err;
738 3efd8e31 2022-10-23 thomas *have_ack = 1;
740 3efd8e31 2022-10-23 thomas done = 1;
742 3efd8e31 2022-10-23 thomas case GOTD_IMSG_NAK:
743 3efd8e31 2022-10-23 thomas err = recv_nak(&imsg, ihave.object_id);
746 3efd8e31 2022-10-23 thomas done = 1;
749 3efd8e31 2022-10-23 thomas err = got_error(GOT_ERR_PRIVSEP_MSG);
753 3efd8e31 2022-10-23 thomas imsg_free(&imsg);
756 3efd8e31 2022-10-23 thomas return err;
759 3efd8e31 2022-10-23 thomas static const struct got_error *
760 3efd8e31 2022-10-23 thomas recv_done(int *packfd, int outfd, struct imsgbuf *ibuf, int chattygot)
762 3efd8e31 2022-10-23 thomas const struct got_error *err;
763 3efd8e31 2022-10-23 thomas struct imsg imsg;
765 3efd8e31 2022-10-23 thomas *packfd = -1;
767 3efd8e31 2022-10-23 thomas if (imsg_compose(ibuf, GOTD_IMSG_DONE, 0, 0, -1, NULL, 0) == -1)
768 3efd8e31 2022-10-23 thomas return got_error_from_errno("imsg_compose DONE");
770 3efd8e31 2022-10-23 thomas err = gotd_imsg_flush(ibuf);
772 3efd8e31 2022-10-23 thomas return err;
774 cc4cc677 2022-10-28 thomas while (*packfd == -1 && err == NULL) {
775 cc4cc677 2022-10-28 thomas err = gotd_imsg_poll_recv(&imsg, ibuf, 0);
779 cc4cc677 2022-10-28 thomas switch (imsg.hdr.type) {
780 cc4cc677 2022-10-28 thomas case GOTD_IMSG_ERROR:
781 cc4cc677 2022-10-28 thomas err = gotd_imsg_recv_error(NULL, &imsg);
783 cc4cc677 2022-10-28 thomas case GOTD_IMSG_PACKFILE_PIPE:
784 cc4cc677 2022-10-28 thomas if (imsg.fd != -1)
785 cc4cc677 2022-10-28 thomas *packfd = imsg.fd;
787 cc4cc677 2022-10-28 thomas err = got_error(GOT_ERR_PRIVSEP_NO_FD);
790 cc4cc677 2022-10-28 thomas err = got_error(GOT_ERR_PRIVSEP_MSG);
794 cc4cc677 2022-10-28 thomas imsg_free(&imsg);
797 3efd8e31 2022-10-23 thomas return err;
800 3efd8e31 2022-10-23 thomas static const struct got_error *
801 3efd8e31 2022-10-23 thomas relay_progress_reports(struct imsgbuf *ibuf, int outfd, int chattygot)
803 3efd8e31 2022-10-23 thomas const struct got_error *err = NULL;
804 3efd8e31 2022-10-23 thomas int pack_starting = 0;
805 3efd8e31 2022-10-23 thomas struct gotd_imsg_packfile_progress iprog;
806 3efd8e31 2022-10-23 thomas char buf[GOT_PKT_MAX];
807 3efd8e31 2022-10-23 thomas struct imsg imsg;
808 3efd8e31 2022-10-23 thomas size_t datalen;
809 3efd8e31 2022-10-23 thomas int p_deltify = 0, n;
810 3efd8e31 2022-10-23 thomas const char *eol = "\r";
812 3efd8e31 2022-10-23 thomas memset(&imsg, 0, sizeof(imsg));
814 3efd8e31 2022-10-23 thomas while (!pack_starting && err == NULL) {
815 3efd8e31 2022-10-23 thomas err = gotd_imsg_poll_recv(&imsg, ibuf, 0);
819 3efd8e31 2022-10-23 thomas datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
820 3efd8e31 2022-10-23 thomas switch (imsg.hdr.type) {
821 3efd8e31 2022-10-23 thomas case GOTD_IMSG_ERROR:
822 3efd8e31 2022-10-23 thomas err = gotd_imsg_recv_error(NULL, &imsg);
824 3efd8e31 2022-10-23 thomas case GOTD_IMSG_PACKFILE_READY:
825 3efd8e31 2022-10-23 thomas eol = "\n";
826 3efd8e31 2022-10-23 thomas pack_starting = 1;
827 3efd8e31 2022-10-23 thomas /* fallthrough */
828 3efd8e31 2022-10-23 thomas case GOTD_IMSG_PACKFILE_PROGRESS:
829 3efd8e31 2022-10-23 thomas if (datalen != sizeof(iprog)) {
830 3efd8e31 2022-10-23 thomas err = got_error(GOT_ERR_PRIVSEP_LEN);
833 3efd8e31 2022-10-23 thomas memcpy(&iprog, imsg.data, sizeof(iprog));
834 3efd8e31 2022-10-23 thomas if (iprog.nobj_total > 0) {
835 3efd8e31 2022-10-23 thomas p_deltify = (iprog.nobj_deltify * 100) /
836 3efd8e31 2022-10-23 thomas iprog.nobj_total;
838 3efd8e31 2022-10-23 thomas buf[0] = GOT_SIDEBAND_PROGRESS_INFO;
839 3efd8e31 2022-10-23 thomas n = snprintf(&buf[1], sizeof(buf) - 1,
840 3efd8e31 2022-10-23 thomas "%d commits colored, "
841 3efd8e31 2022-10-23 thomas "%d objects found, "
842 3efd8e31 2022-10-23 thomas "deltify %d%%%s",
843 946e0798 2022-11-06 thomas iprog.ncolored,
844 946e0798 2022-11-06 thomas iprog.nfound,
845 3efd8e31 2022-10-23 thomas p_deltify, eol);
846 3efd8e31 2022-10-23 thomas if (n >= sizeof(buf) - 1)
848 3efd8e31 2022-10-23 thomas err = got_pkt_writepkt(outfd, buf, 1 + n, chattygot);
851 3efd8e31 2022-10-23 thomas err = got_error(GOT_ERR_PRIVSEP_MSG);
855 3efd8e31 2022-10-23 thomas imsg_free(&imsg);
858 3efd8e31 2022-10-23 thomas return err;
861 3efd8e31 2022-10-23 thomas static const struct got_error *
862 3efd8e31 2022-10-23 thomas serve_read(int infd, int outfd, int gotd_sock, const char *repo_path,
863 3efd8e31 2022-10-23 thomas int chattygot)
865 3efd8e31 2022-10-23 thomas const struct got_error *err = NULL;
866 3efd8e31 2022-10-23 thomas char buf[GOT_PKT_MAX];
867 3efd8e31 2022-10-23 thomas struct imsgbuf ibuf;
868 3efd8e31 2022-10-23 thomas enum protostate {
869 3efd8e31 2022-10-23 thomas STATE_EXPECT_WANT,
870 3efd8e31 2022-10-23 thomas STATE_EXPECT_MORE_WANT,
871 3efd8e31 2022-10-23 thomas STATE_EXPECT_HAVE,
872 3efd8e31 2022-10-23 thomas STATE_EXPECT_DONE,
873 3efd8e31 2022-10-23 thomas STATE_DONE,
875 3efd8e31 2022-10-23 thomas enum protostate curstate = STATE_EXPECT_WANT;
876 3efd8e31 2022-10-23 thomas int have_ack = 0, use_sidebands = 0, seen_have = 0;
877 3efd8e31 2022-10-23 thomas int packfd = -1;
878 3efd8e31 2022-10-23 thomas size_t pack_chunksize;
880 3efd8e31 2022-10-23 thomas imsg_init(&ibuf, gotd_sock);
882 3efd8e31 2022-10-23 thomas err = announce_refs(outfd, &ibuf, 1, repo_path, chattygot);
884 3efd8e31 2022-10-23 thomas goto done;
886 3efd8e31 2022-10-23 thomas while (curstate != STATE_DONE) {
888 3efd8e31 2022-10-23 thomas buf[0] = '\0';
889 3efd8e31 2022-10-23 thomas err = got_pkt_readpkt(&n, infd, buf, sizeof(buf), chattygot);
891 113392cf 2023-01-23 thomas goto done;
892 3efd8e31 2022-10-23 thomas if (n == 0) {
893 895484c8 2023-01-19 thomas if (curstate != STATE_EXPECT_WANT &&
894 895484c8 2023-01-19 thomas curstate != STATE_EXPECT_MORE_WANT &&
895 6110f5ef 2023-01-19 thomas curstate != STATE_EXPECT_HAVE &&
896 6110f5ef 2023-01-19 thomas curstate != STATE_EXPECT_DONE) {
897 3efd8e31 2022-10-23 thomas err = got_error_msg(GOT_ERR_BAD_PACKET,
898 3efd8e31 2022-10-23 thomas "unexpected flush packet received");
899 3efd8e31 2022-10-23 thomas goto done;
902 895484c8 2023-01-19 thomas if (curstate == STATE_EXPECT_WANT) {
903 895484c8 2023-01-19 thomas ssize_t r;
905 895484c8 2023-01-19 thomas * If the client does not want to fetch
906 895484c8 2023-01-19 thomas * anything we should receive a flush
907 895484c8 2023-01-19 thomas * packet followed by EOF.
909 895484c8 2023-01-19 thomas r = read(infd, buf, sizeof(buf));
910 895484c8 2023-01-19 thomas if (r == -1) {
911 895484c8 2023-01-19 thomas err = got_error_from_errno("read");
912 895484c8 2023-01-19 thomas goto done;
914 895484c8 2023-01-19 thomas if (r == 0) /* EOF */
915 895484c8 2023-01-19 thomas goto done;
917 895484c8 2023-01-19 thomas /* Zero-length field followed by payload. */
918 895484c8 2023-01-19 thomas err = got_error_msg(GOT_ERR_BAD_PACKET,
919 895484c8 2023-01-19 thomas "unexpected flush packet received");
920 895484c8 2023-01-19 thomas goto done;
923 94a71055 2023-01-23 thomas if (curstate == STATE_EXPECT_WANT ||
924 94a71055 2023-01-23 thomas curstate == STATE_EXPECT_MORE_WANT ||
925 94a71055 2023-01-23 thomas curstate == STATE_EXPECT_HAVE) {
926 94a71055 2023-01-23 thomas err = forward_flushpkt(&ibuf);
928 94a71055 2023-01-23 thomas goto done;
930 3efd8e31 2022-10-23 thomas if (curstate == STATE_EXPECT_HAVE && !have_ack) {
931 3efd8e31 2022-10-23 thomas err = send_nak(outfd, chattygot);
933 3efd8e31 2022-10-23 thomas goto done;
935 3efd8e31 2022-10-23 thomas if (curstate == STATE_EXPECT_MORE_WANT)
936 3efd8e31 2022-10-23 thomas curstate = STATE_EXPECT_HAVE;
938 3efd8e31 2022-10-23 thomas curstate = STATE_EXPECT_DONE;
939 3efd8e31 2022-10-23 thomas } else if (n >= 5 && strncmp(buf, "want ", 5) == 0) {
940 3efd8e31 2022-10-23 thomas if (curstate != STATE_EXPECT_WANT &&
941 3efd8e31 2022-10-23 thomas curstate != STATE_EXPECT_MORE_WANT) {
942 3efd8e31 2022-10-23 thomas err = got_error_msg(GOT_ERR_BAD_PACKET,
943 3efd8e31 2022-10-23 thomas "unexpected 'want' packet");
944 3efd8e31 2022-10-23 thomas goto done;
946 3efd8e31 2022-10-23 thomas err = recv_want(&use_sidebands, outfd, &ibuf, buf, n,
947 3efd8e31 2022-10-23 thomas curstate == STATE_EXPECT_WANT ? 1 : 0, chattygot);
949 3efd8e31 2022-10-23 thomas goto done;
950 3efd8e31 2022-10-23 thomas if (curstate == STATE_EXPECT_WANT)
951 3efd8e31 2022-10-23 thomas curstate = STATE_EXPECT_MORE_WANT;
952 3efd8e31 2022-10-23 thomas } else if (n >= 5 && strncmp(buf, "have ", 5) == 0) {
953 6110f5ef 2023-01-19 thomas if (curstate != STATE_EXPECT_HAVE &&
954 6110f5ef 2023-01-19 thomas curstate != STATE_EXPECT_DONE) {
955 3efd8e31 2022-10-23 thomas err = got_error_msg(GOT_ERR_BAD_PACKET,
956 3efd8e31 2022-10-23 thomas "unexpected 'have' packet");
957 3efd8e31 2022-10-23 thomas goto done;
959 6110f5ef 2023-01-19 thomas if (curstate == STATE_EXPECT_HAVE) {
960 6110f5ef 2023-01-19 thomas err = recv_have(&have_ack, outfd, &ibuf,
961 6110f5ef 2023-01-19 thomas buf, n, chattygot);
963 6110f5ef 2023-01-19 thomas goto done;
964 6110f5ef 2023-01-19 thomas seen_have = 1;
966 3efd8e31 2022-10-23 thomas } else if (n == 5 && strncmp(buf, "done\n", 5) == 0) {
967 3efd8e31 2022-10-23 thomas if (curstate != STATE_EXPECT_HAVE &&
968 3efd8e31 2022-10-23 thomas curstate != STATE_EXPECT_DONE) {
969 3efd8e31 2022-10-23 thomas err = got_error_msg(GOT_ERR_BAD_PACKET,
970 3efd8e31 2022-10-23 thomas "unexpected 'done' packet");
971 3efd8e31 2022-10-23 thomas goto done;
973 3efd8e31 2022-10-23 thomas err = recv_done(&packfd, outfd, &ibuf, chattygot);
975 3efd8e31 2022-10-23 thomas goto done;
976 3efd8e31 2022-10-23 thomas curstate = STATE_DONE;
979 3efd8e31 2022-10-23 thomas err = got_error(GOT_ERR_BAD_PACKET);
980 3efd8e31 2022-10-23 thomas goto done;
984 3efd8e31 2022-10-23 thomas if (!seen_have) {
985 3efd8e31 2022-10-23 thomas err = send_nak(outfd, chattygot);
987 3efd8e31 2022-10-23 thomas goto done;
990 3efd8e31 2022-10-23 thomas if (use_sidebands) {
991 3efd8e31 2022-10-23 thomas err = relay_progress_reports(&ibuf, outfd, chattygot);
993 3efd8e31 2022-10-23 thomas goto done;
994 3efd8e31 2022-10-23 thomas pack_chunksize = GOT_SIDEBAND_64K_PACKFILE_DATA_MAX;
996 3efd8e31 2022-10-23 thomas pack_chunksize = sizeof(buf);
998 3efd8e31 2022-10-23 thomas for (;;) {
999 89077ea1 2022-10-31 thomas ssize_t r;
1001 3efd8e31 2022-10-23 thomas r = read(packfd, use_sidebands ? &buf[1] : buf,
1002 3efd8e31 2022-10-23 thomas pack_chunksize);
1003 3efd8e31 2022-10-23 thomas if (r == -1) {
1004 3efd8e31 2022-10-23 thomas err = got_error_from_errno("read");
1006 3efd8e31 2022-10-23 thomas } else if (r == 0) {
1007 3efd8e31 2022-10-23 thomas err = got_pkt_flushpkt(outfd, chattygot);
1011 3efd8e31 2022-10-23 thomas if (use_sidebands) {
1012 3efd8e31 2022-10-23 thomas buf[0] = GOT_SIDEBAND_PACKFILE_DATA;
1013 3efd8e31 2022-10-23 thomas err = got_pkt_writepkt(outfd, buf, 1 + r, chattygot);
1014 3efd8e31 2022-10-23 thomas if (err)
1016 3efd8e31 2022-10-23 thomas } else {
1017 89077ea1 2022-10-31 thomas err = got_poll_write_full(outfd, buf, r);
1018 89077ea1 2022-10-31 thomas if (err) {
1019 89077ea1 2022-10-31 thomas if (err->code == GOT_ERR_EOF)
1020 89077ea1 2022-10-31 thomas err = NULL;
1026 3efd8e31 2022-10-23 thomas imsg_clear(&ibuf);
1027 3efd8e31 2022-10-23 thomas if (packfd != -1 && close(packfd) == -1 && err == NULL)
1028 3efd8e31 2022-10-23 thomas err = got_error_from_errno("close");
1029 3efd8e31 2022-10-23 thomas if (err)
1030 3efd8e31 2022-10-23 thomas echo_error(err, outfd, chattygot);
1031 3efd8e31 2022-10-23 thomas return err;
1034 3efd8e31 2022-10-23 thomas static const struct got_error *
1035 3efd8e31 2022-10-23 thomas parse_ref_update_line(char **common_capabilities, char **refname,
1036 3efd8e31 2022-10-23 thomas uint8_t *old_id, uint8_t *new_id, char *buf, size_t len)
1038 3efd8e31 2022-10-23 thomas const struct got_error *err;
1039 3efd8e31 2022-10-23 thomas char *old_id_str = NULL, *new_id_str = NULL;
1040 3efd8e31 2022-10-23 thomas char *client_capabilities = NULL;
1042 3efd8e31 2022-10-23 thomas *refname = NULL;
1044 3efd8e31 2022-10-23 thomas err = got_gitproto_parse_ref_update_line(&old_id_str, &new_id_str,
1045 3efd8e31 2022-10-23 thomas refname, &client_capabilities, buf, len);
1046 3efd8e31 2022-10-23 thomas if (err)
1047 3efd8e31 2022-10-23 thomas return err;
1049 c8ae092d 2023-02-23 thomas if (!got_parse_hash_digest(old_id, old_id_str, GOT_HASH_SHA1) ||
1050 c8ae092d 2023-02-23 thomas !got_parse_hash_digest(new_id, new_id_str, GOT_HASH_SHA1)) {
1051 3efd8e31 2022-10-23 thomas err = got_error_msg(GOT_ERR_BAD_PACKET,
1052 3efd8e31 2022-10-23 thomas "ref-update with bad object ID");
1053 3efd8e31 2022-10-23 thomas goto done;
1055 3efd8e31 2022-10-23 thomas if (!got_ref_name_is_valid(*refname)) {
1056 3efd8e31 2022-10-23 thomas err = got_error_msg(GOT_ERR_BAD_PACKET,
1057 3efd8e31 2022-10-23 thomas "ref-update with bad reference name");
1058 3efd8e31 2022-10-23 thomas goto done;
1061 3efd8e31 2022-10-23 thomas if (client_capabilities) {
1062 3efd8e31 2022-10-23 thomas err = got_gitproto_match_capabilities(common_capabilities,
1063 3efd8e31 2022-10-23 thomas NULL, client_capabilities, write_capabilities,
1064 3efd8e31 2022-10-23 thomas nitems(write_capabilities));
1065 3efd8e31 2022-10-23 thomas if (err)
1066 3efd8e31 2022-10-23 thomas goto done;
1069 3efd8e31 2022-10-23 thomas free(old_id_str);
1070 3efd8e31 2022-10-23 thomas free(new_id_str);
1071 3efd8e31 2022-10-23 thomas free(client_capabilities);
1072 3efd8e31 2022-10-23 thomas if (err) {
1073 3efd8e31 2022-10-23 thomas free(*refname);
1074 3efd8e31 2022-10-23 thomas *refname = NULL;
1076 3efd8e31 2022-10-23 thomas return err;
1079 3efd8e31 2022-10-23 thomas static const struct got_error *
1080 3efd8e31 2022-10-23 thomas recv_ref_update(int *report_status, int outfd, struct imsgbuf *ibuf,
1081 3efd8e31 2022-10-23 thomas char *buf, size_t len, int expect_capabilities, int chattygot)
1083 3efd8e31 2022-10-23 thomas const struct got_error *err;
1084 3efd8e31 2022-10-23 thomas struct gotd_imsg_ref_update iref;
1085 3efd8e31 2022-10-23 thomas struct ibuf *wbuf;
1086 3efd8e31 2022-10-23 thomas char *capabilities_str = NULL, *refname = NULL;
1087 3efd8e31 2022-10-23 thomas int done = 0;
1088 3efd8e31 2022-10-23 thomas struct imsg imsg;
1090 3efd8e31 2022-10-23 thomas memset(&iref, 0, sizeof(iref));
1091 3efd8e31 2022-10-23 thomas memset(&imsg, 0, sizeof(imsg));
1093 3efd8e31 2022-10-23 thomas err = parse_ref_update_line(&capabilities_str, &refname,
1094 3efd8e31 2022-10-23 thomas iref.old_id, iref.new_id, buf, len);
1095 3efd8e31 2022-10-23 thomas if (err)
1096 3efd8e31 2022-10-23 thomas return err;
1098 3efd8e31 2022-10-23 thomas if (capabilities_str) {
1099 3efd8e31 2022-10-23 thomas if (!expect_capabilities) {
1100 3efd8e31 2022-10-23 thomas err = got_error_msg(GOT_ERR_BAD_PACKET,
1101 3efd8e31 2022-10-23 thomas "unexpected capability announcement received");
1102 3efd8e31 2022-10-23 thomas goto done;
1104 3efd8e31 2022-10-23 thomas err = send_capabilities(NULL, report_status, capabilities_str,
1106 3efd8e31 2022-10-23 thomas if (err)
1107 3efd8e31 2022-10-23 thomas goto done;
1110 3efd8e31 2022-10-23 thomas iref.name_len = strlen(refname);
1111 3efd8e31 2022-10-23 thomas len = sizeof(iref) + iref.name_len;
1112 3efd8e31 2022-10-23 thomas wbuf = imsg_create(ibuf, GOTD_IMSG_REF_UPDATE, 0, 0, len);
1113 3efd8e31 2022-10-23 thomas if (wbuf == NULL) {
1114 3efd8e31 2022-10-23 thomas err = got_error_from_errno("imsg_create REF_UPDATE");
1115 3efd8e31 2022-10-23 thomas goto done;
1118 3efd8e31 2022-10-23 thomas if (imsg_add(wbuf, &iref, sizeof(iref)) == -1)
1119 3efd8e31 2022-10-23 thomas return got_error_from_errno("imsg_add REF_UPDATE");
1120 3efd8e31 2022-10-23 thomas if (imsg_add(wbuf, refname, iref.name_len) == -1)
1121 3efd8e31 2022-10-23 thomas return got_error_from_errno("imsg_add REF_UPDATE");
1122 3efd8e31 2022-10-23 thomas wbuf->fd = -1;
1123 3efd8e31 2022-10-23 thomas imsg_close(ibuf, wbuf);
1125 3efd8e31 2022-10-23 thomas err = gotd_imsg_flush(ibuf);
1126 3efd8e31 2022-10-23 thomas if (err)
1127 3efd8e31 2022-10-23 thomas goto done;
1129 3efd8e31 2022-10-23 thomas /* Wait for ACK or an error. */
1130 3efd8e31 2022-10-23 thomas while (!done && err == NULL) {
1131 3efd8e31 2022-10-23 thomas err = gotd_imsg_poll_recv(&imsg, ibuf, 0);
1132 3efd8e31 2022-10-23 thomas if (err)
1134 3efd8e31 2022-10-23 thomas switch (imsg.hdr.type) {
1135 3efd8e31 2022-10-23 thomas case GOTD_IMSG_ERROR:
1136 3efd8e31 2022-10-23 thomas err = gotd_imsg_recv_error(NULL, &imsg);
1138 3efd8e31 2022-10-23 thomas case GOTD_IMSG_ACK:
1139 3efd8e31 2022-10-23 thomas err = recv_ack(&imsg, iref.new_id);
1140 3efd8e31 2022-10-23 thomas if (err)
1142 3efd8e31 2022-10-23 thomas done = 1;
1144 3efd8e31 2022-10-23 thomas default:
1145 3efd8e31 2022-10-23 thomas err = got_error(GOT_ERR_PRIVSEP_MSG);
1149 3efd8e31 2022-10-23 thomas imsg_free(&imsg);
1152 3efd8e31 2022-10-23 thomas free(capabilities_str);
1153 3efd8e31 2022-10-23 thomas free(refname);
1154 3efd8e31 2022-10-23 thomas return err;
1157 3efd8e31 2022-10-23 thomas static const struct got_error *
1158 3efd8e31 2022-10-23 thomas recv_packfile(struct imsg *imsg, int infd)
1160 3efd8e31 2022-10-23 thomas const struct got_error *err = NULL;
1161 3efd8e31 2022-10-23 thomas size_t datalen;
1162 3efd8e31 2022-10-23 thomas int packfd;
1163 3efd8e31 2022-10-23 thomas char buf[GOT_PKT_MAX];
1164 3efd8e31 2022-10-23 thomas int pack_done = 0;
1166 3efd8e31 2022-10-23 thomas datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
1167 3efd8e31 2022-10-23 thomas if (datalen != 0)
1168 3efd8e31 2022-10-23 thomas return got_error(GOT_ERR_PRIVSEP_MSG);
1170 3efd8e31 2022-10-23 thomas if (imsg->fd == -1)
1171 3efd8e31 2022-10-23 thomas return got_error(GOT_ERR_PRIVSEP_NO_FD);
1173 3efd8e31 2022-10-23 thomas packfd = imsg->fd;
1174 3efd8e31 2022-10-23 thomas while (!pack_done) {
1175 3efd8e31 2022-10-23 thomas ssize_t r = 0;
1177 3efd8e31 2022-10-23 thomas err = got_poll_fd(infd, POLLIN, 1);
1178 3efd8e31 2022-10-23 thomas if (err) {
1179 3efd8e31 2022-10-23 thomas if (err->code != GOT_ERR_TIMEOUT)
1181 3efd8e31 2022-10-23 thomas err = NULL;
1182 3efd8e31 2022-10-23 thomas } else {
1183 3efd8e31 2022-10-23 thomas r = read(infd, buf, sizeof(buf));
1184 3efd8e31 2022-10-23 thomas if (r == -1) {
1185 3efd8e31 2022-10-23 thomas err = got_error_from_errno("read");
1188 3efd8e31 2022-10-23 thomas if (r == 0) {
1190 3efd8e31 2022-10-23 thomas * Git clients hang up their side of the
1191 3efd8e31 2022-10-23 thomas * connection after sending the pack file.
1193 3efd8e31 2022-10-23 thomas err = NULL;
1194 3efd8e31 2022-10-23 thomas pack_done = 1;
1199 3efd8e31 2022-10-23 thomas if (r == 0) {
1200 3efd8e31 2022-10-23 thomas /* Detect gotd(8) closing the pack pipe when done. */
1201 3efd8e31 2022-10-23 thomas err = got_poll_fd(packfd, POLLOUT, 1);
1202 3efd8e31 2022-10-23 thomas if (err) {
1203 3efd8e31 2022-10-23 thomas if (err->code != GOT_ERR_EOF)
1205 3efd8e31 2022-10-23 thomas err = NULL;
1206 3efd8e31 2022-10-23 thomas pack_done = 1;
1208 3efd8e31 2022-10-23 thomas } else {
1209 3efd8e31 2022-10-23 thomas /* Write pack data and/or detect pipe being closed. */
1210 3efd8e31 2022-10-23 thomas err = got_poll_write_full(packfd, buf, r);
1211 3efd8e31 2022-10-23 thomas if (err) {
1212 3efd8e31 2022-10-23 thomas if (err->code == GOT_ERR_EOF)
1213 3efd8e31 2022-10-23 thomas err = NULL;
1219 3efd8e31 2022-10-23 thomas close(packfd);
1220 3efd8e31 2022-10-23 thomas return err;
1223 3efd8e31 2022-10-23 thomas static const struct got_error *
1224 3efd8e31 2022-10-23 thomas report_unpack_status(struct imsg *imsg, int outfd, int chattygot)
1226 3efd8e31 2022-10-23 thomas const struct got_error *err = NULL;
1227 3efd8e31 2022-10-23 thomas struct gotd_imsg_packfile_status istatus;
1228 3efd8e31 2022-10-23 thomas char buf[GOT_PKT_MAX];
1229 3efd8e31 2022-10-23 thomas size_t datalen, len;
1230 3efd8e31 2022-10-23 thomas char *reason = NULL;
1232 3efd8e31 2022-10-23 thomas datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
1233 3efd8e31 2022-10-23 thomas if (datalen < sizeof(istatus))
1234 3efd8e31 2022-10-23 thomas return got_error(GOT_ERR_PRIVSEP_LEN);
1235 3efd8e31 2022-10-23 thomas memcpy(&istatus, imsg->data, sizeof(istatus));
1236 3efd8e31 2022-10-23 thomas if (datalen != sizeof(istatus) + istatus.reason_len)
1237 3efd8e31 2022-10-23 thomas return got_error(GOT_ERR_PRIVSEP_LEN);
1239 fcbb06bf 2023-01-14 thomas reason = strndup(imsg->data + sizeof(istatus), istatus.reason_len);
1240 3efd8e31 2022-10-23 thomas if (reason == NULL) {
1241 fcbb06bf 2023-01-14 thomas err = got_error_from_errno("strndup");
1242 3efd8e31 2022-10-23 thomas goto done;
1245 3efd8e31 2022-10-23 thomas if (err == NULL)
1246 3efd8e31 2022-10-23 thomas len = snprintf(buf, sizeof(buf), "unpack ok\n");
1248 3efd8e31 2022-10-23 thomas len = snprintf(buf, sizeof(buf), "unpack %s\n", reason);
1249 3efd8e31 2022-10-23 thomas if (len >= sizeof(buf)) {
1250 3efd8e31 2022-10-23 thomas err = got_error(GOT_ERR_NO_SPACE);
1251 3efd8e31 2022-10-23 thomas goto done;
1254 3efd8e31 2022-10-23 thomas err = got_pkt_writepkt(outfd, buf, len, chattygot);
1256 3efd8e31 2022-10-23 thomas free(reason);
1257 3efd8e31 2022-10-23 thomas return err;
1260 3efd8e31 2022-10-23 thomas static const struct got_error *
1261 3efd8e31 2022-10-23 thomas recv_ref_update_ok(struct imsg *imsg, int outfd, int chattygot)
1263 3efd8e31 2022-10-23 thomas const struct got_error *err = NULL;
1264 3efd8e31 2022-10-23 thomas struct gotd_imsg_ref_update_ok iok;
1265 3efd8e31 2022-10-23 thomas size_t datalen, len;
1266 3efd8e31 2022-10-23 thomas char buf[GOT_PKT_MAX];
1267 3efd8e31 2022-10-23 thomas char *refname = NULL;
1269 3efd8e31 2022-10-23 thomas datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
1270 3efd8e31 2022-10-23 thomas if (datalen < sizeof(iok))
1271 3efd8e31 2022-10-23 thomas return got_error(GOT_ERR_PRIVSEP_LEN);
1272 3efd8e31 2022-10-23 thomas memcpy(&iok, imsg->data, sizeof(iok));
1273 3efd8e31 2022-10-23 thomas if (datalen != sizeof(iok) + iok.name_len)
1274 3efd8e31 2022-10-23 thomas return got_error(GOT_ERR_PRIVSEP_LEN);
1276 3efd8e31 2022-10-23 thomas memcpy(&iok, imsg->data, sizeof(iok));
1278 fcbb06bf 2023-01-14 thomas refname = strndup(imsg->data + sizeof(iok), iok.name_len);
1279 3efd8e31 2022-10-23 thomas if (refname == NULL)
1280 fcbb06bf 2023-01-14 thomas return got_error_from_errno("strndup");
1282 3efd8e31 2022-10-23 thomas len = snprintf(buf, sizeof(buf), "ok %s\n", refname);
1283 3efd8e31 2022-10-23 thomas if (len >= sizeof(buf)) {
1284 3efd8e31 2022-10-23 thomas err = got_error(GOT_ERR_NO_SPACE);
1285 3efd8e31 2022-10-23 thomas goto done;
1288 3efd8e31 2022-10-23 thomas err = got_pkt_writepkt(outfd, buf, len, chattygot);
1290 3efd8e31 2022-10-23 thomas free(refname);
1291 3efd8e31 2022-10-23 thomas return err;
1294 3efd8e31 2022-10-23 thomas static const struct got_error *
1295 3efd8e31 2022-10-23 thomas recv_ref_update_ng(struct imsg *imsg, int outfd, int chattygot)
1297 3efd8e31 2022-10-23 thomas const struct got_error *err = NULL;
1298 3efd8e31 2022-10-23 thomas struct gotd_imsg_ref_update_ng ing;
1299 3efd8e31 2022-10-23 thomas size_t datalen, len;
1300 3efd8e31 2022-10-23 thomas char buf[GOT_PKT_MAX];
1301 3efd8e31 2022-10-23 thomas char *refname = NULL, *reason = NULL;
1303 3efd8e31 2022-10-23 thomas datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
1304 3efd8e31 2022-10-23 thomas if (datalen < sizeof(ing))
1305 3efd8e31 2022-10-23 thomas return got_error(GOT_ERR_PRIVSEP_LEN);
1306 3efd8e31 2022-10-23 thomas memcpy(&ing, imsg->data, sizeof(ing));
1307 3efd8e31 2022-10-23 thomas if (datalen != sizeof(ing) + ing.name_len + ing.reason_len)
1308 3efd8e31 2022-10-23 thomas return got_error(GOT_ERR_PRIVSEP_LEN);
1310 3efd8e31 2022-10-23 thomas memcpy(&ing, imsg->data, sizeof(ing));
1312 fcbb06bf 2023-01-14 thomas refname = strndup(imsg->data + sizeof(ing), ing.name_len);
1313 3efd8e31 2022-10-23 thomas if (refname == NULL)
1314 fcbb06bf 2023-01-14 thomas return got_error_from_errno("strndup");
1316 fcbb06bf 2023-01-14 thomas reason = strndup(imsg->data + sizeof(ing) + ing.name_len,
1317 fcbb06bf 2023-01-14 thomas ing.reason_len);
1318 3efd8e31 2022-10-23 thomas if (reason == NULL) {
1319 fcbb06bf 2023-01-14 thomas err = got_error_from_errno("strndup");
1320 3efd8e31 2022-10-23 thomas goto done;
1323 3efd8e31 2022-10-23 thomas len = snprintf(buf, sizeof(buf), "ng %s %s\n", refname, reason);
1324 3efd8e31 2022-10-23 thomas if (len >= sizeof(buf)) {
1325 3efd8e31 2022-10-23 thomas err = got_error(GOT_ERR_NO_SPACE);
1326 3efd8e31 2022-10-23 thomas goto done;
1329 3efd8e31 2022-10-23 thomas err = got_pkt_writepkt(outfd, buf, len, chattygot);
1331 3efd8e31 2022-10-23 thomas free(refname);
1332 3efd8e31 2022-10-23 thomas free(reason);
1333 3efd8e31 2022-10-23 thomas return err;
1336 3efd8e31 2022-10-23 thomas static const struct got_error *
1337 3efd8e31 2022-10-23 thomas serve_write(int infd, int outfd, int gotd_sock, const char *repo_path,
1338 3efd8e31 2022-10-23 thomas int chattygot)
1340 3efd8e31 2022-10-23 thomas const struct got_error *err = NULL;
1341 3efd8e31 2022-10-23 thomas char buf[GOT_PKT_MAX];
1342 3efd8e31 2022-10-23 thomas struct imsgbuf ibuf;
1343 3efd8e31 2022-10-23 thomas enum protostate {
1344 3efd8e31 2022-10-23 thomas STATE_EXPECT_REF_UPDATE,
1345 3efd8e31 2022-10-23 thomas STATE_EXPECT_MORE_REF_UPDATES,
1346 3efd8e31 2022-10-23 thomas STATE_EXPECT_PACKFILE,
1347 3efd8e31 2022-10-23 thomas STATE_PACKFILE_RECEIVED,
1348 3efd8e31 2022-10-23 thomas STATE_REFS_UPDATED,
1350 3efd8e31 2022-10-23 thomas enum protostate curstate = STATE_EXPECT_REF_UPDATE;
1351 3efd8e31 2022-10-23 thomas struct imsg imsg;
1352 3efd8e31 2022-10-23 thomas int report_status = 0;
1354 3efd8e31 2022-10-23 thomas imsg_init(&ibuf, gotd_sock);
1355 3efd8e31 2022-10-23 thomas memset(&imsg, 0, sizeof(imsg));
1357 3efd8e31 2022-10-23 thomas err = announce_refs(outfd, &ibuf, 0, repo_path, chattygot);
1358 3efd8e31 2022-10-23 thomas if (err)
1359 3efd8e31 2022-10-23 thomas goto done;
1361 3efd8e31 2022-10-23 thomas while (curstate != STATE_EXPECT_PACKFILE) {
1363 3efd8e31 2022-10-23 thomas buf[0] = '\0';
1364 3efd8e31 2022-10-23 thomas err = got_pkt_readpkt(&n, infd, buf, sizeof(buf), chattygot);
1365 3efd8e31 2022-10-23 thomas if (err)
1366 8b56c8f4 2023-01-23 thomas goto done;
1367 3efd8e31 2022-10-23 thomas if (n == 0) {
1368 3efd8e31 2022-10-23 thomas if (curstate != STATE_EXPECT_MORE_REF_UPDATES) {
1369 3efd8e31 2022-10-23 thomas err = got_error_msg(GOT_ERR_BAD_PACKET,
1370 3efd8e31 2022-10-23 thomas "unexpected flush packet received");
1371 3efd8e31 2022-10-23 thomas goto done;
1373 3efd8e31 2022-10-23 thomas err = forward_flushpkt(&ibuf);
1374 3efd8e31 2022-10-23 thomas if (err)
1375 3efd8e31 2022-10-23 thomas goto done;
1376 3efd8e31 2022-10-23 thomas curstate = STATE_EXPECT_PACKFILE;
1377 3efd8e31 2022-10-23 thomas } else if (n >= (SHA1_DIGEST_STRING_LENGTH * 2) + 2) {
1378 3efd8e31 2022-10-23 thomas if (curstate != STATE_EXPECT_REF_UPDATE &&
1379 3efd8e31 2022-10-23 thomas curstate != STATE_EXPECT_MORE_REF_UPDATES) {
1380 3efd8e31 2022-10-23 thomas err = got_error_msg(GOT_ERR_BAD_PACKET,
1381 3efd8e31 2022-10-23 thomas "unexpected ref-update packet");
1382 3efd8e31 2022-10-23 thomas goto done;
1384 3efd8e31 2022-10-23 thomas if (curstate == STATE_EXPECT_REF_UPDATE) {
1385 3efd8e31 2022-10-23 thomas err = recv_ref_update(&report_status,
1386 3efd8e31 2022-10-23 thomas outfd, &ibuf, buf, n, 1, chattygot);
1387 3efd8e31 2022-10-23 thomas } else {
1388 3efd8e31 2022-10-23 thomas err = recv_ref_update(NULL, outfd, &ibuf,
1389 3efd8e31 2022-10-23 thomas buf, n, 0, chattygot);
1391 3efd8e31 2022-10-23 thomas if (err)
1392 3efd8e31 2022-10-23 thomas goto done;
1393 3efd8e31 2022-10-23 thomas curstate = STATE_EXPECT_MORE_REF_UPDATES;
1394 3efd8e31 2022-10-23 thomas } else {
1395 3efd8e31 2022-10-23 thomas err = got_error(GOT_ERR_BAD_PACKET);
1396 3efd8e31 2022-10-23 thomas goto done;
1400 3efd8e31 2022-10-23 thomas while (curstate != STATE_PACKFILE_RECEIVED) {
1401 3efd8e31 2022-10-23 thomas err = gotd_imsg_poll_recv(&imsg, &ibuf, 0);
1402 3efd8e31 2022-10-23 thomas if (err)
1403 3efd8e31 2022-10-23 thomas goto done;
1404 3efd8e31 2022-10-23 thomas switch (imsg.hdr.type) {
1405 3efd8e31 2022-10-23 thomas case GOTD_IMSG_ERROR:
1406 3efd8e31 2022-10-23 thomas err = gotd_imsg_recv_error(NULL, &imsg);
1407 3efd8e31 2022-10-23 thomas goto done;
1408 3efd8e31 2022-10-23 thomas case GOTD_IMSG_RECV_PACKFILE:
1409 3efd8e31 2022-10-23 thomas err = recv_packfile(&imsg, infd);
1410 3efd8e31 2022-10-23 thomas if (err) {
1411 3efd8e31 2022-10-23 thomas if (err->code != GOT_ERR_EOF)
1412 3efd8e31 2022-10-23 thomas goto done;
1414 3efd8e31 2022-10-23 thomas * EOF is reported when the client hangs up,
1415 3efd8e31 2022-10-23 thomas * which can happen with Git clients.
1416 3efd8e31 2022-10-23 thomas * The socket should stay half-open so we
1417 3efd8e31 2022-10-23 thomas * can still send our reports if requested.
1419 3efd8e31 2022-10-23 thomas err = NULL;
1421 3efd8e31 2022-10-23 thomas curstate = STATE_PACKFILE_RECEIVED;
1423 3efd8e31 2022-10-23 thomas default:
1424 3efd8e31 2022-10-23 thomas err = got_error(GOT_ERR_PRIVSEP_MSG);
1428 3efd8e31 2022-10-23 thomas imsg_free(&imsg);
1429 3efd8e31 2022-10-23 thomas if (err)
1430 3efd8e31 2022-10-23 thomas goto done;
1433 3efd8e31 2022-10-23 thomas while (curstate != STATE_REFS_UPDATED && err == NULL) {
1434 3efd8e31 2022-10-23 thomas err = gotd_imsg_poll_recv(&imsg, &ibuf, 0);
1435 3efd8e31 2022-10-23 thomas if (err)
1437 3efd8e31 2022-10-23 thomas switch (imsg.hdr.type) {
1438 3efd8e31 2022-10-23 thomas case GOTD_IMSG_ERROR:
1439 3efd8e31 2022-10-23 thomas err = gotd_imsg_recv_error(NULL, &imsg);
1441 3efd8e31 2022-10-23 thomas case GOTD_IMSG_PACKFILE_STATUS:
1442 3efd8e31 2022-10-23 thomas if (!report_status)
1444 3efd8e31 2022-10-23 thomas err = report_unpack_status(&imsg, outfd, chattygot);
1446 3efd8e31 2022-10-23 thomas case GOTD_IMSG_REF_UPDATE_OK:
1447 3efd8e31 2022-10-23 thomas if (!report_status)
1449 3efd8e31 2022-10-23 thomas err = recv_ref_update_ok(&imsg, outfd, chattygot);
1451 3efd8e31 2022-10-23 thomas case GOTD_IMSG_REF_UPDATE_NG:
1452 3efd8e31 2022-10-23 thomas if (!report_status)
1454 3efd8e31 2022-10-23 thomas err = recv_ref_update_ng(&imsg, outfd, chattygot);
1456 3efd8e31 2022-10-23 thomas case GOTD_IMSG_REFS_UPDATED:
1457 3efd8e31 2022-10-23 thomas curstate = STATE_REFS_UPDATED;
1458 3efd8e31 2022-10-23 thomas err = got_pkt_flushpkt(outfd, chattygot);
1460 3efd8e31 2022-10-23 thomas default:
1461 3efd8e31 2022-10-23 thomas err = got_error(GOT_ERR_PRIVSEP_MSG);
1465 3efd8e31 2022-10-23 thomas imsg_free(&imsg);
1468 3efd8e31 2022-10-23 thomas imsg_clear(&ibuf);
1469 3efd8e31 2022-10-23 thomas if (err)
1470 3efd8e31 2022-10-23 thomas echo_error(err, outfd, chattygot);
1471 3efd8e31 2022-10-23 thomas return err;
1474 3efd8e31 2022-10-23 thomas const struct got_error *
1475 214d733a 2023-01-23 thomas got_serve(int infd, int outfd, const char *command, const char *repo_path,
1476 214d733a 2023-01-23 thomas int gotd_sock, int chattygot)
1478 3efd8e31 2022-10-23 thomas const struct got_error *err = NULL;
1480 3efd8e31 2022-10-23 thomas if (strcmp(command, GOT_SERVE_CMD_FETCH) == 0)
1481 3efd8e31 2022-10-23 thomas err = serve_read(infd, outfd, gotd_sock, repo_path, chattygot);
1482 3efd8e31 2022-10-23 thomas else if (strcmp(command, GOT_SERVE_CMD_SEND) == 0)
1483 8efb3dc0 2023-01-23 thomas err = serve_write(infd, outfd, gotd_sock, repo_path,
1484 8efb3dc0 2023-01-23 thomas chattygot);
1486 3efd8e31 2022-10-23 thomas err = got_error(GOT_ERR_BAD_PACKET);
1488 3efd8e31 2022-10-23 thomas return err;
