1 93658fb9 2020-03-18 stsp /*
  2 93658fb9 2020-03-18 stsp  * Copyright (c) 2019 Ori Bernstein <ori@openbsd.org>
  3 93658fb9 2020-03-18 stsp  *
  4 93658fb9 2020-03-18 stsp  * Permission to use, copy, modify, and distribute this software for any
  5 93658fb9 2020-03-18 stsp  * purpose with or without fee is hereby granted, provided that the above
  6 93658fb9 2020-03-18 stsp  * copyright notice and this permission notice appear in all copies.
  7 93658fb9 2020-03-18 stsp  *
  8 93658fb9 2020-03-18 stsp  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  9 93658fb9 2020-03-18 stsp  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 10 93658fb9 2020-03-18 stsp  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 11 93658fb9 2020-03-18 stsp  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 12 93658fb9 2020-03-18 stsp  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 13 93658fb9 2020-03-18 stsp  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 14 93658fb9 2020-03-18 stsp  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 15 93658fb9 2020-03-18 stsp  */
 16 93658fb9 2020-03-18 stsp 
 17 93658fb9 2020-03-18 stsp #include <sys/types.h>
 18 93658fb9 2020-03-18 stsp #include <sys/queue.h>
 19 93658fb9 2020-03-18 stsp #include <sys/uio.h>
 20 93658fb9 2020-03-18 stsp #include <sys/time.h>
 21 93658fb9 2020-03-18 stsp #include <sys/stat.h>
 22 93658fb9 2020-03-18 stsp #include <sys/syslimits.h>
 23 93658fb9 2020-03-18 stsp 
 24 93658fb9 2020-03-18 stsp #include <stdint.h>
 25 93658fb9 2020-03-18 stsp #include <errno.h>
 26 93658fb9 2020-03-18 stsp #include <imsg.h>
 27 93658fb9 2020-03-18 stsp #include <limits.h>
 28 93658fb9 2020-03-18 stsp #include <signal.h>
 29 93658fb9 2020-03-18 stsp #include <stdio.h>
 30 93658fb9 2020-03-18 stsp #include <stdlib.h>
 31 93658fb9 2020-03-18 stsp #include <string.h>
 32 93658fb9 2020-03-18 stsp #include <ctype.h>
 33 93658fb9 2020-03-18 stsp #include <sha1.h>
 34 93658fb9 2020-03-18 stsp #include <fcntl.h>
 35 93658fb9 2020-03-18 stsp #include <zlib.h>
 36 93658fb9 2020-03-18 stsp #include <err.h>
 37 93658fb9 2020-03-18 stsp 
 38 93658fb9 2020-03-18 stsp #include "got_error.h"
 39 93658fb9 2020-03-18 stsp #include "got_object.h"
 40 abe0f35f 2020-03-18 stsp #include "got_path.h"
 41 8a29a085 2020-03-18 stsp #include "got_version.h"
 42 93658fb9 2020-03-18 stsp 
 43 93658fb9 2020-03-18 stsp #include "got_lib_sha1.h"
 44 93658fb9 2020-03-18 stsp #include "got_lib_delta.h"
 45 93658fb9 2020-03-18 stsp #include "got_lib_object.h"
 46 93658fb9 2020-03-18 stsp #include "got_lib_object_parse.h"
 47 93658fb9 2020-03-18 stsp #include "got_lib_privsep.h"
 48 93658fb9 2020-03-18 stsp 
 49 8a29a085 2020-03-18 stsp #ifndef nitems
 50 8a29a085 2020-03-18 stsp #define nitems(_a)	(sizeof((_a)) / sizeof((_a)[0]))
 51 8a29a085 2020-03-18 stsp #endif
 52 8a29a085 2020-03-18 stsp 
 53 93658fb9 2020-03-18 stsp #define GOT_PKTMAX	65536
 54 93658fb9 2020-03-18 stsp 
 55 93658fb9 2020-03-18 stsp struct got_object *indexed;
 56 93658fb9 2020-03-18 stsp static int chattygit;
 57 93658fb9 2020-03-18 stsp static char *fetchbranch;
 58 93658fb9 2020-03-18 stsp static char *upstream = "origin";
 59 93658fb9 2020-03-18 stsp static struct got_object_id zhash = {.sha1={0}};
 60 93658fb9 2020-03-18 stsp 
 61 93658fb9 2020-03-18 stsp static char*
 62 93658fb9 2020-03-18 stsp strip(char *ref)
 63 93658fb9 2020-03-18 stsp {
 64 93658fb9 2020-03-18 stsp 	return ref;
 65 93658fb9 2020-03-18 stsp }
 66 93658fb9 2020-03-18 stsp 
 67 93658fb9 2020-03-18 stsp int
 68 93658fb9 2020-03-18 stsp readn(int fd, void *buf, size_t n)
 69 93658fb9 2020-03-18 stsp {
 70 93658fb9 2020-03-18 stsp 	ssize_t r, off;
 71 93658fb9 2020-03-18 stsp 
 72 93658fb9 2020-03-18 stsp 	off = 0;
 73 93658fb9 2020-03-18 stsp 	while (off != n) {
 74 93658fb9 2020-03-18 stsp 		r = read(fd, buf + off, n - off);
 75 93658fb9 2020-03-18 stsp 		if (r < 0)
 76 93658fb9 2020-03-18 stsp 			return -1;
 77 93658fb9 2020-03-18 stsp 		if (r == 0)
 78 93658fb9 2020-03-18 stsp 			return off;
 79 93658fb9 2020-03-18 stsp 		off += r;
 80 93658fb9 2020-03-18 stsp 	}
 81 93658fb9 2020-03-18 stsp 	return off;
 82 93658fb9 2020-03-18 stsp }
 83 93658fb9 2020-03-18 stsp 
 84 93658fb9 2020-03-18 stsp int
 85 93658fb9 2020-03-18 stsp flushpkt(int fd)
 86 93658fb9 2020-03-18 stsp {
 87 93658fb9 2020-03-18 stsp 	if(chattygit)
 88 93658fb9 2020-03-18 stsp 		fprintf(stderr, "writepkt: 0000\n");
 89 93658fb9 2020-03-18 stsp 	return write(fd, "0000", 4);
 90 93658fb9 2020-03-18 stsp }
 91 93658fb9 2020-03-18 stsp 
 92 93658fb9 2020-03-18 stsp 
 93 93658fb9 2020-03-18 stsp int
 94 93658fb9 2020-03-18 stsp readpkt(int fd, char *buf, int nbuf)
 95 93658fb9 2020-03-18 stsp {
 96 93658fb9 2020-03-18 stsp 	char len[5];
 97 93658fb9 2020-03-18 stsp 	char *e;
 98 93658fb9 2020-03-18 stsp 	int n, r;
 99 93658fb9 2020-03-18 stsp 
100 93658fb9 2020-03-18 stsp 	if(readn(fd, len, 4) == -1){
101 93658fb9 2020-03-18 stsp 		return -1;
102 93658fb9 2020-03-18 stsp 	}
103 93658fb9 2020-03-18 stsp 	len[4] = 0;
104 93658fb9 2020-03-18 stsp 	n = strtol(len, &e, 16);
105 93658fb9 2020-03-18 stsp 	if(n == 0){
106 93658fb9 2020-03-18 stsp 		if(chattygit)
107 93658fb9 2020-03-18 stsp 			fprintf(stderr, "readpkt: 0000\n");
108 93658fb9 2020-03-18 stsp 		return 0;
109 93658fb9 2020-03-18 stsp 	}
110 93658fb9 2020-03-18 stsp 	if(e != len + 4 || n <= 4)
111 93658fb9 2020-03-18 stsp 		err(1, "invalid packet line length");
112 93658fb9 2020-03-18 stsp 	n  -= 4;
113 93658fb9 2020-03-18 stsp 	if(n >= nbuf)
114 93658fb9 2020-03-18 stsp 		err(1, "buffer too small");
115 93658fb9 2020-03-18 stsp 	if((r = readn(fd, buf, n)) != n)
116 93658fb9 2020-03-18 stsp 		return -1;
117 93658fb9 2020-03-18 stsp 	buf[n] = 0;
118 93658fb9 2020-03-18 stsp 	if(chattygit)
119 93658fb9 2020-03-18 stsp 		fprintf(stderr, "readpkt: %s:\t%.*s\n", len, nbuf, buf);
120 93658fb9 2020-03-18 stsp 	return n;
121 93658fb9 2020-03-18 stsp }
122 93658fb9 2020-03-18 stsp 
123 93658fb9 2020-03-18 stsp int
124 93658fb9 2020-03-18 stsp writepkt(int fd, char *buf, int nbuf)
125 93658fb9 2020-03-18 stsp {
126 93658fb9 2020-03-18 stsp 	char len[5];
127 93658fb9 2020-03-18 stsp 	int i;
128 93658fb9 2020-03-18 stsp 
129 93658fb9 2020-03-18 stsp 	if (snprintf(len, sizeof(len), "%04x", nbuf + 4) >= sizeof(len))
130 93658fb9 2020-03-18 stsp 		return -1;
131 93658fb9 2020-03-18 stsp 	if(write(fd, len, 4) != 4)
132 93658fb9 2020-03-18 stsp 		return -1;
133 93658fb9 2020-03-18 stsp 	if(write(fd, buf, nbuf) != nbuf)
134 93658fb9 2020-03-18 stsp 		return -1;
135 93658fb9 2020-03-18 stsp 	if(chattygit){
136 93658fb9 2020-03-18 stsp 		fprintf(stderr, "writepkt: %s:\t", len);
137 93658fb9 2020-03-18 stsp 		fwrite(buf, 1, nbuf, stderr);
138 93658fb9 2020-03-18 stsp 		for(i = 0; i < nbuf; i++){
139 93658fb9 2020-03-18 stsp 			if(isprint(buf[i]))
140 93658fb9 2020-03-18 stsp 				fputc(buf[i], stderr);
141 93658fb9 2020-03-18 stsp 		}
142 93658fb9 2020-03-18 stsp 	}
143 93658fb9 2020-03-18 stsp 	return 0;
144 93658fb9 2020-03-18 stsp }
145 93658fb9 2020-03-18 stsp 
146 93658fb9 2020-03-18 stsp 
147 93658fb9 2020-03-18 stsp int
148 93658fb9 2020-03-18 stsp got_resolve_remote_ref(struct got_object_id *id, char *ref)
149 93658fb9 2020-03-18 stsp {
150 93658fb9 2020-03-18 stsp 	char buf[128], *s;
151 93658fb9 2020-03-18 stsp 	int r, f;
152 93658fb9 2020-03-18 stsp 
153 93658fb9 2020-03-18 stsp 	ref = strip(ref);
154 93658fb9 2020-03-18 stsp 	if(!got_parse_sha1_digest(id->sha1, ref))
155 93658fb9 2020-03-18 stsp 		return 0;
156 93658fb9 2020-03-18 stsp 
157 93658fb9 2020-03-18 stsp 	/* Slightly special handling: translate remote refs to local ones. */
158 93658fb9 2020-03-18 stsp 	if (strcmp(ref, "HEAD") == 0) {
159 93658fb9 2020-03-18 stsp 		if(snprintf(buf, sizeof(buf), ".git/HEAD") >= sizeof(buf))
160 93658fb9 2020-03-18 stsp 			return -1;
161 93658fb9 2020-03-18 stsp 	} else if(strstr(ref, "refs/heads") == ref) {
162 93658fb9 2020-03-18 stsp 		ref += strlen("refs/heads");
163 93658fb9 2020-03-18 stsp 		if(snprintf(buf, sizeof(buf),
164 93658fb9 2020-03-18 stsp 		    ".git/refs/remotes/%s/%s", upstream, ref) >= sizeof(buf))
165 93658fb9 2020-03-18 stsp 			return -1;
166 93658fb9 2020-03-18 stsp 	} else if(strstr(ref, "refs/tags") == ref) {
167 93658fb9 2020-03-18 stsp 		ref += strlen("refs/tags");
168 93658fb9 2020-03-18 stsp 		if(snprintf(buf, sizeof(buf),
169 93658fb9 2020-03-18 stsp 		    ".git/refs/tags/%s/%s", upstream, ref) >= sizeof(buf))
170 93658fb9 2020-03-18 stsp 			return -1;
171 93658fb9 2020-03-18 stsp 	} else {
172 93658fb9 2020-03-18 stsp 		return -1;
173 93658fb9 2020-03-18 stsp 	}
174 93658fb9 2020-03-18 stsp 
175 93658fb9 2020-03-18 stsp 	r = -1;
176 93658fb9 2020-03-18 stsp 	s = strip(buf);
177 93658fb9 2020-03-18 stsp 	if((f = open(s, O_RDONLY)) == -1)
178 93658fb9 2020-03-18 stsp 		goto err;
179 93658fb9 2020-03-18 stsp 	if(readn(f, buf, sizeof(buf)) < 40)
180 93658fb9 2020-03-18 stsp 		goto err;
181 93658fb9 2020-03-18 stsp 	if(!got_parse_sha1_digest(id->sha1, buf))
182 93658fb9 2020-03-18 stsp 		goto err;
183 93658fb9 2020-03-18 stsp err:
184 93658fb9 2020-03-18 stsp 	close(f);
185 93658fb9 2020-03-18 stsp 	if(r == -1 && strstr(buf, "ref:") == buf)
186 93658fb9 2020-03-18 stsp 		return got_resolve_remote_ref(id, buf + strlen("ref:"));
187 93658fb9 2020-03-18 stsp 	return r;
188 93658fb9 2020-03-18 stsp }
189 93658fb9 2020-03-18 stsp 
190 93658fb9 2020-03-18 stsp static int
191 93658fb9 2020-03-18 stsp got_check_pack_hash(int fd, size_t sz, uint8_t *hcomp)
192 93658fb9 2020-03-18 stsp {
193 93658fb9 2020-03-18 stsp 	SHA1_CTX ctx;
194 93658fb9 2020-03-18 stsp 	uint8_t hexpect[SHA1_DIGEST_LENGTH];
195 93658fb9 2020-03-18 stsp 	char s1[SHA1_DIGEST_STRING_LENGTH + 1];
196 93658fb9 2020-03-18 stsp 	char s2[SHA1_DIGEST_STRING_LENGTH + 1];
197 93658fb9 2020-03-18 stsp 	uint8_t buf[32*1024];
198 93658fb9 2020-03-18 stsp 	ssize_t n, r, nr;
199 93658fb9 2020-03-18 stsp 
200 93658fb9 2020-03-18 stsp 	if(sz < 28)
201 93658fb9 2020-03-18 stsp 		return -1;
202 93658fb9 2020-03-18 stsp 
203 93658fb9 2020-03-18 stsp 	n = 0;
204 93658fb9 2020-03-18 stsp 	SHA1Init(&ctx);
205 93658fb9 2020-03-18 stsp 	while(n < sz - 20){
206 93658fb9 2020-03-18 stsp 		nr = sizeof(buf);
207 93658fb9 2020-03-18 stsp 		if(sz - n - 20 < sizeof(buf))
208 93658fb9 2020-03-18 stsp 			nr = sz - n - 20;
209 93658fb9 2020-03-18 stsp 		r = readn(fd, buf, nr);
210 93658fb9 2020-03-18 stsp 		if(r != nr)
211 93658fb9 2020-03-18 stsp 			return -1;
212 93658fb9 2020-03-18 stsp 		SHA1Update(&ctx, buf, nr);
213 93658fb9 2020-03-18 stsp 		n += r;
214 93658fb9 2020-03-18 stsp 	}
215 93658fb9 2020-03-18 stsp 	SHA1Final(hcomp, &ctx);
216 93658fb9 2020-03-18 stsp 
217 93658fb9 2020-03-18 stsp 	if(readn(fd, hexpect, sizeof(hexpect)) != sizeof(hexpect))
218 93658fb9 2020-03-18 stsp 		errx(1, "truncated packfile");
219 93658fb9 2020-03-18 stsp 	if(memcmp(hcomp, hexpect, SHA1_DIGEST_LENGTH) != 0){
220 93658fb9 2020-03-18 stsp 		got_sha1_digest_to_str(hcomp, s1, sizeof(s1));
221 93658fb9 2020-03-18 stsp 		got_sha1_digest_to_str(hexpect, s2, sizeof(s2));
222 93658fb9 2020-03-18 stsp 		printf("hash mismatch %s != %s\n", s1, s2);
223 93658fb9 2020-03-18 stsp 		return -1;
224 93658fb9 2020-03-18 stsp 	}
225 93658fb9 2020-03-18 stsp 	return 0;
226 93658fb9 2020-03-18 stsp }
227 93658fb9 2020-03-18 stsp 
228 93658fb9 2020-03-18 stsp int
229 93658fb9 2020-03-18 stsp got_has_object(struct got_object_id *obj)
230 93658fb9 2020-03-18 stsp {
231 93658fb9 2020-03-18 stsp 	return 0;
232 93658fb9 2020-03-18 stsp }
233 93658fb9 2020-03-18 stsp 
234 93658fb9 2020-03-18 stsp /*static */int
235 93658fb9 2020-03-18 stsp got_make_pack_dir(char *path)
236 93658fb9 2020-03-18 stsp {
237 93658fb9 2020-03-18 stsp 	char s[128];
238 93658fb9 2020-03-18 stsp 	char *p;
239 93658fb9 2020-03-18 stsp 
240 93658fb9 2020-03-18 stsp 	if(snprintf(s, sizeof(s), "%s", path) >= sizeof(s))
241 93658fb9 2020-03-18 stsp 		return -1;
242 93658fb9 2020-03-18 stsp 	for(p=strchr(s+1, '/'); p; p=strchr(p+1, '/')){
243 93658fb9 2020-03-18 stsp 		*p = 0;
244 93658fb9 2020-03-18 stsp 		if (mkdir(s, 0755) == -1)
245 93658fb9 2020-03-18 stsp 			if(errno != EEXIST)
246 93658fb9 2020-03-18 stsp 				return -1;
247 93658fb9 2020-03-18 stsp 		*p = '/';
248 93658fb9 2020-03-18 stsp 	}
249 93658fb9 2020-03-18 stsp 	return 0;
250 93658fb9 2020-03-18 stsp }
251 93658fb9 2020-03-18 stsp 
252 93658fb9 2020-03-18 stsp static int
253 93658fb9 2020-03-18 stsp got_match_branch(char *br, char *pat)
254 93658fb9 2020-03-18 stsp {
255 93658fb9 2020-03-18 stsp 	char name[128];
256 93658fb9 2020-03-18 stsp 
257 93658fb9 2020-03-18 stsp 	if(strstr(pat, "refs/heads") == pat) {
258 93658fb9 2020-03-18 stsp 		if (snprintf(name, sizeof(name), "%s", pat) >= sizeof(name))
259 93658fb9 2020-03-18 stsp 			return -1;
260 93658fb9 2020-03-18 stsp 	} else if(strstr(pat, "heads")) {
261 93658fb9 2020-03-18 stsp 		if (snprintf(name, sizeof(name), "refs/%s", pat) >= sizeof(name))
262 93658fb9 2020-03-18 stsp 			return -1;
263 93658fb9 2020-03-18 stsp 	} else {
264 93658fb9 2020-03-18 stsp 		if (snprintf(name, sizeof(name), "refs/heads/%s", pat) >= sizeof(name))
265 93658fb9 2020-03-18 stsp 			return -1;
266 93658fb9 2020-03-18 stsp 	}
267 93658fb9 2020-03-18 stsp 	return strcmp(br, name) == 0;
268 93658fb9 2020-03-18 stsp }
269 93658fb9 2020-03-18 stsp 
270 0d0a341c 2020-03-18 stsp static const struct got_error *
271 0d0a341c 2020-03-18 stsp got_tokenize_refline(char **tokens, char *line, int len)
272 93658fb9 2020-03-18 stsp {
273 0d0a341c 2020-03-18 stsp 	const struct got_error *err = NULL;
274 93658fb9 2020-03-18 stsp 	char *p;
275 0d0a341c 2020-03-18 stsp 	size_t i, n = 0;
276 0d0a341c 2020-03-18 stsp 	const int maxtokens = 3;
277 93658fb9 2020-03-18 stsp 
278 0d0a341c 2020-03-18 stsp 	for (i = 0; i < maxtokens; i++)
279 0d0a341c 2020-03-18 stsp 		tokens[i] = NULL;
280 0d0a341c 2020-03-18 stsp 
281 0d0a341c 2020-03-18 stsp 	for (i = 0; n < len && i < maxtokens; i++) {
282 0d0a341c 2020-03-18 stsp 		while (isspace(*line)) {
283 93658fb9 2020-03-18 stsp 			line++;
284 0d0a341c 2020-03-18 stsp 			n++;
285 0d0a341c 2020-03-18 stsp 		}
286 93658fb9 2020-03-18 stsp 		p = line;
287 0d0a341c 2020-03-18 stsp 		while (*line != '\0' &&
288 0d0a341c 2020-03-18 stsp 		    (!isspace(*line) || i == maxtokens - 1)) {
289 93658fb9 2020-03-18 stsp 			line++;
290 0d0a341c 2020-03-18 stsp 			n++;
291 0d0a341c 2020-03-18 stsp 		}
292 0d0a341c 2020-03-18 stsp 		tokens[i] = strndup(p, line - p);
293 0d0a341c 2020-03-18 stsp 		if (tokens[i] == NULL) {
294 0d0a341c 2020-03-18 stsp 			err = got_error_from_errno("strndup");
295 0d0a341c 2020-03-18 stsp 			goto done;
296 0d0a341c 2020-03-18 stsp 		}
297 0d0a341c 2020-03-18 stsp 		/* Skip \0 field-delimiter at end of token. */
298 0d0a341c 2020-03-18 stsp 		while (line[0] == '\0' && n < len) {
299 0d0a341c 2020-03-18 stsp 			line++;
300 0d0a341c 2020-03-18 stsp 			n++;
301 0d0a341c 2020-03-18 stsp 		}
302 93658fb9 2020-03-18 stsp 	}
303 0d0a341c 2020-03-18 stsp 	if (i <= 2)
304 0d0a341c 2020-03-18 stsp 		err = got_error(GOT_ERR_NOT_REF);
305 0d0a341c 2020-03-18 stsp done:
306 0d0a341c 2020-03-18 stsp 	if (err) {
307 0d0a341c 2020-03-18 stsp 		int j;
308 0d0a341c 2020-03-18 stsp 		for (j = 0; j < i; j++)
309 0d0a341c 2020-03-18 stsp 			free(tokens[j]);
310 0d0a341c 2020-03-18 stsp 			tokens[j] = NULL;
311 0d0a341c 2020-03-18 stsp 	}
312 0d0a341c 2020-03-18 stsp 	return err;
313 8a29a085 2020-03-18 stsp }
314 8a29a085 2020-03-18 stsp 
315 8a29a085 2020-03-18 stsp struct got_capability {
316 8a29a085 2020-03-18 stsp 	const char *key;
317 8a29a085 2020-03-18 stsp 	const char *value;
318 8a29a085 2020-03-18 stsp };
319 8a29a085 2020-03-18 stsp static const struct got_capability got_capabilities[] = {
320 8a29a085 2020-03-18 stsp #if 0 /* got-index-pack is not ready for this */
321 8a29a085 2020-03-18 stsp 	{ "ofs-delta", NULL },
322 8a29a085 2020-03-18 stsp #endif
323 8a29a085 2020-03-18 stsp 	{ "agent", "got/" GOT_VERSION_STR },
324 8a29a085 2020-03-18 stsp };
325 8a29a085 2020-03-18 stsp 
326 8a29a085 2020-03-18 stsp static const struct got_error *
327 8a29a085 2020-03-18 stsp match_capability(char **my_capabilities, const char *capa,
328 8a29a085 2020-03-18 stsp     const struct got_capability *mycapa)
329 8a29a085 2020-03-18 stsp {
330 8a29a085 2020-03-18 stsp 	char *equalsign;
331 8a29a085 2020-03-18 stsp 	char *s;
332 8a29a085 2020-03-18 stsp 
333 8a29a085 2020-03-18 stsp 	equalsign = strchr(capa, '=');
334 8a29a085 2020-03-18 stsp 	if (equalsign) {
335 8a29a085 2020-03-18 stsp 		if (strncmp(capa, mycapa->key, equalsign - capa) != 0)
336 8a29a085 2020-03-18 stsp 			return NULL;
337 8a29a085 2020-03-18 stsp 	} else {
338 8a29a085 2020-03-18 stsp 		if (strcmp(capa, mycapa->key) != 0)
339 8a29a085 2020-03-18 stsp 			return NULL;
340 8a29a085 2020-03-18 stsp 	}
341 8a29a085 2020-03-18 stsp 
342 8a29a085 2020-03-18 stsp 	if (asprintf(&s, "%s%s%s%s%s",
343 8a29a085 2020-03-18 stsp 	    *my_capabilities != NULL ? *my_capabilities : "",
344 8a29a085 2020-03-18 stsp 	    *my_capabilities != NULL ? " " : "",
345 8a29a085 2020-03-18 stsp 	    mycapa->key,
346 8a29a085 2020-03-18 stsp 	    mycapa->value != NULL ? "=" : "",
347 8a29a085 2020-03-18 stsp 	    mycapa->value != NULL? mycapa->value : "") == -1)
348 8a29a085 2020-03-18 stsp 		return got_error_from_errno("asprintf");
349 8a29a085 2020-03-18 stsp 
350 8a29a085 2020-03-18 stsp 	free(*my_capabilities);
351 8a29a085 2020-03-18 stsp 	*my_capabilities = s;
352 8a29a085 2020-03-18 stsp 	return NULL;
353 93658fb9 2020-03-18 stsp }
354 93658fb9 2020-03-18 stsp 
355 9ff10419 2020-03-18 stsp static const struct got_error *
356 abe0f35f 2020-03-18 stsp add_symref(struct got_pathlist_head *symrefs, const char *capa)
357 8a29a085 2020-03-18 stsp {
358 8a29a085 2020-03-18 stsp 	const struct got_error *err = NULL;
359 abe0f35f 2020-03-18 stsp 	char *colon, *name = NULL, *target = NULL;
360 abe0f35f 2020-03-18 stsp 
361 abe0f35f 2020-03-18 stsp 	/* Need at least "A:B" */
362 abe0f35f 2020-03-18 stsp 	if (strlen(capa) < 3)
363 abe0f35f 2020-03-18 stsp 		return NULL;
364 abe0f35f 2020-03-18 stsp 
365 abe0f35f 2020-03-18 stsp 	colon = strchr(capa, ':');
366 abe0f35f 2020-03-18 stsp 	if (colon == NULL)
367 abe0f35f 2020-03-18 stsp 		return NULL;
368 abe0f35f 2020-03-18 stsp 
369 abe0f35f 2020-03-18 stsp 	*colon = '\0';
370 abe0f35f 2020-03-18 stsp 	name = strdup(capa);
371 abe0f35f 2020-03-18 stsp 	if (name == NULL)
372 abe0f35f 2020-03-18 stsp 		return got_error_from_errno("strdup");
373 abe0f35f 2020-03-18 stsp 
374 abe0f35f 2020-03-18 stsp 	target = strdup(colon + 1);
375 abe0f35f 2020-03-18 stsp 	if (target == NULL) {
376 abe0f35f 2020-03-18 stsp 		err = got_error_from_errno("strdup");
377 abe0f35f 2020-03-18 stsp 		goto done;
378 abe0f35f 2020-03-18 stsp 	}
379 abe0f35f 2020-03-18 stsp 
380 abe0f35f 2020-03-18 stsp 	/* We can't validate the ref itself here. The main process will. */
381 abe0f35f 2020-03-18 stsp 	err = got_pathlist_append(symrefs, name, target);
382 abe0f35f 2020-03-18 stsp done:
383 abe0f35f 2020-03-18 stsp 	if (err) {
384 abe0f35f 2020-03-18 stsp 		free(name);
385 abe0f35f 2020-03-18 stsp 		free(target);
386 abe0f35f 2020-03-18 stsp 	}
387 abe0f35f 2020-03-18 stsp 	return err;
388 abe0f35f 2020-03-18 stsp }
389 abe0f35f 2020-03-18 stsp 
390 abe0f35f 2020-03-18 stsp static const struct got_error *
391 abe0f35f 2020-03-18 stsp match_capabilities(char **my_capabilities, struct got_pathlist_head *symrefs,
392 abe0f35f 2020-03-18 stsp     char *server_capabilities)
393 abe0f35f 2020-03-18 stsp {
394 abe0f35f 2020-03-18 stsp 	const struct got_error *err = NULL;
395 abe0f35f 2020-03-18 stsp 	char *capa, *equalsign;
396 8a29a085 2020-03-18 stsp 	int i;
397 8a29a085 2020-03-18 stsp 
398 8a29a085 2020-03-18 stsp 	*my_capabilities = NULL;
399 8a29a085 2020-03-18 stsp 	do {
400 8a29a085 2020-03-18 stsp 		capa = strsep(&server_capabilities, " ");
401 8a29a085 2020-03-18 stsp 		if (capa == NULL)
402 8a29a085 2020-03-18 stsp 			return NULL;
403 8a29a085 2020-03-18 stsp 
404 abe0f35f 2020-03-18 stsp 		equalsign = strchr(capa, '=');
405 abe0f35f 2020-03-18 stsp 		if (equalsign != NULL &&
406 abe0f35f 2020-03-18 stsp 		    strncmp(capa, "symref", equalsign - capa) == 0) {
407 abe0f35f 2020-03-18 stsp 			err = add_symref(symrefs, equalsign + 1);
408 abe0f35f 2020-03-18 stsp 			if (err)
409 abe0f35f 2020-03-18 stsp 				break;
410 abe0f35f 2020-03-18 stsp 			continue;
411 abe0f35f 2020-03-18 stsp 		}
412 abe0f35f 2020-03-18 stsp 
413 8a29a085 2020-03-18 stsp 		for (i = 0; i < nitems(got_capabilities); i++) {
414 8a29a085 2020-03-18 stsp 			err = match_capability(my_capabilities,
415 8a29a085 2020-03-18 stsp 			    capa, &got_capabilities[i]);
416 8a29a085 2020-03-18 stsp 			if (err)
417 8a29a085 2020-03-18 stsp 				break;
418 8a29a085 2020-03-18 stsp 		}
419 8a29a085 2020-03-18 stsp 	} while (capa);
420 8a29a085 2020-03-18 stsp 
421 8a29a085 2020-03-18 stsp 	return err;
422 8a29a085 2020-03-18 stsp }
423 abe0f35f 2020-03-18 stsp 
424 8a29a085 2020-03-18 stsp static const struct got_error *
425 8f2d01a6 2020-03-18 stsp fetch_pack(int fd, int packfd, struct got_object_id *packid,
426 8f2d01a6 2020-03-18 stsp     struct imsgbuf *ibuf)
427 93658fb9 2020-03-18 stsp {
428 9ff10419 2020-03-18 stsp 	const struct got_error *err = NULL;
429 ccbf9d19 2020-03-18 stsp 	char buf[GOT_PKTMAX], *sp[3];
430 93658fb9 2020-03-18 stsp 	char hashstr[SHA1_DIGEST_STRING_LENGTH];
431 93658fb9 2020-03-18 stsp 	struct got_object_id *have, *want;
432 8a29a085 2020-03-18 stsp 	int is_firstpkt = 1, nref = 0, refsz = 16;
433 93658fb9 2020-03-18 stsp 	int i, n, req;
434 93658fb9 2020-03-18 stsp 	off_t packsz;
435 8a29a085 2020-03-18 stsp 	char *my_capabilities = NULL;
436 abe0f35f 2020-03-18 stsp 	struct got_pathlist_head symrefs;
437 abe0f35f 2020-03-18 stsp 	struct got_pathlist_entry *pe;
438 93658fb9 2020-03-18 stsp 
439 abe0f35f 2020-03-18 stsp 	TAILQ_INIT(&symrefs);
440 abe0f35f 2020-03-18 stsp 
441 93658fb9 2020-03-18 stsp 	have = malloc(refsz * sizeof(have[0]));
442 9ff10419 2020-03-18 stsp 	if (have == NULL)
443 9ff10419 2020-03-18 stsp 		return got_error_from_errno("malloc");
444 93658fb9 2020-03-18 stsp 	want = malloc(refsz * sizeof(want[0]));
445 9ff10419 2020-03-18 stsp 	if (want == NULL) {
446 9ff10419 2020-03-18 stsp 		err = got_error_from_errno("malloc");
447 9ff10419 2020-03-18 stsp 		goto done;
448 9ff10419 2020-03-18 stsp 	}
449 9ff10419 2020-03-18 stsp 	if (chattygit)
450 9ff10419 2020-03-18 stsp 		fprintf(stderr, "starting fetch\n");
451 9ff10419 2020-03-18 stsp 	while (1) {
452 93658fb9 2020-03-18 stsp 		n = readpkt(fd, buf, sizeof(buf));
453 9ff10419 2020-03-18 stsp 		if (n == -1){
454 9b45e112 2020-03-18 stsp 			err = got_error_from_errno("readpkt");
455 9ff10419 2020-03-18 stsp 			goto done;
456 9ff10419 2020-03-18 stsp 		}
457 9ff10419 2020-03-18 stsp 		if (n == 0)
458 93658fb9 2020-03-18 stsp 			break;
459 a6f88e33 2020-03-18 stsp 		if (n >= 4 && strncmp(buf, "ERR ", 4) == 0) {
460 9ff10419 2020-03-18 stsp 			static char msg[1024];
461 a6f88e33 2020-03-18 stsp 			for (i = 0; i < n && i < sizeof(msg) - 1; i++) {
462 a6f88e33 2020-03-18 stsp 				if (!isprint(buf[i])) {
463 a6f88e33 2020-03-18 stsp 					err = got_error(GOT_ERR_FETCH_FAILED);
464 a6f88e33 2020-03-18 stsp 					goto done;
465 a6f88e33 2020-03-18 stsp 				}
466 a6f88e33 2020-03-18 stsp 				msg[i] = buf[i];
467 a6f88e33 2020-03-18 stsp 			}
468 a6f88e33 2020-03-18 stsp 			msg[i] = '\0';
469 9ff10419 2020-03-18 stsp 			err = got_error_msg(GOT_ERR_FETCH_FAILED, msg);
470 9ff10419 2020-03-18 stsp 			goto done;
471 9ff10419 2020-03-18 stsp 		}
472 0d0a341c 2020-03-18 stsp 		err = got_tokenize_refline(sp, buf, n);
473 0d0a341c 2020-03-18 stsp 		if (err)
474 9ff10419 2020-03-18 stsp 			goto done;
475 0d0a341c 2020-03-18 stsp 		if (chattygit && sp[2][0] != '\0')
476 8a29a085 2020-03-18 stsp 			fprintf(stderr, "server capabilities: %s\n", sp[2]);
477 8a29a085 2020-03-18 stsp 		if (is_firstpkt) {
478 abe0f35f 2020-03-18 stsp 			err = match_capabilities(&my_capabilities, &symrefs,
479 abe0f35f 2020-03-18 stsp 			    sp[2]);
480 8a29a085 2020-03-18 stsp 			if (err)
481 8a29a085 2020-03-18 stsp 				goto done;
482 8a29a085 2020-03-18 stsp 			if (chattygit && my_capabilities)
483 8a29a085 2020-03-18 stsp 				fprintf(stderr, "my matched capabilities: %s\n",
484 8a29a085 2020-03-18 stsp 				    my_capabilities);
485 abe0f35f 2020-03-18 stsp 			err = got_privsep_send_fetch_symrefs(ibuf, &symrefs);
486 abe0f35f 2020-03-18 stsp 			if (err)
487 abe0f35f 2020-03-18 stsp 				goto done;
488 8a29a085 2020-03-18 stsp 		}
489 8a29a085 2020-03-18 stsp 		is_firstpkt = 0;
490 9ff10419 2020-03-18 stsp 		if (strstr(sp[1], "^{}"))
491 93658fb9 2020-03-18 stsp 			continue;
492 9ff10419 2020-03-18 stsp 		if (fetchbranch && !got_match_branch(sp[1], fetchbranch))
493 93658fb9 2020-03-18 stsp 			continue;
494 9ff10419 2020-03-18 stsp 		if (refsz == nref + 1){
495 93658fb9 2020-03-18 stsp 			refsz *= 2;
496 93658fb9 2020-03-18 stsp 			have = realloc(have, refsz * sizeof(have[0]));
497 9ff10419 2020-03-18 stsp 			if (have == NULL) {
498 9ff10419 2020-03-18 stsp 				err = got_error_from_errno("realloc");
499 9ff10419 2020-03-18 stsp 				goto done;
500 9ff10419 2020-03-18 stsp 			}
501 93658fb9 2020-03-18 stsp 			want = realloc(want, refsz * sizeof(want[0]));
502 9ff10419 2020-03-18 stsp 			if (want == NULL) {
503 9ff10419 2020-03-18 stsp 				err = got_error_from_errno("realloc");
504 9ff10419 2020-03-18 stsp 				goto done;
505 9ff10419 2020-03-18 stsp 			}
506 93658fb9 2020-03-18 stsp 		}
507 9ff10419 2020-03-18 stsp 		if (!got_parse_sha1_digest(want[nref].sha1, sp[0])) {
508 9ff10419 2020-03-18 stsp 			err = got_error(GOT_ERR_BAD_OBJ_ID_STR);
509 9ff10419 2020-03-18 stsp 			goto done;
510 9ff10419 2020-03-18 stsp 		}
511 9ff10419 2020-03-18 stsp 
512 93658fb9 2020-03-18 stsp 		if (got_resolve_remote_ref(&have[nref], sp[1]) == -1)
513 93658fb9 2020-03-18 stsp 			memset(&have[nref], 0, sizeof(have[nref]));
514 8f2d01a6 2020-03-18 stsp 		err = got_privsep_send_fetch_progress(ibuf, &want[nref], sp[1]);
515 8f2d01a6 2020-03-18 stsp 		if (err)
516 8f2d01a6 2020-03-18 stsp 			goto done;
517 93658fb9 2020-03-18 stsp 		if (chattygit)
518 93658fb9 2020-03-18 stsp 			fprintf(stderr, "remote %s\n", sp[1]);
519 93658fb9 2020-03-18 stsp 		nref++;
520 93658fb9 2020-03-18 stsp 	}
521 93658fb9 2020-03-18 stsp 
522 93658fb9 2020-03-18 stsp 	req = 0;
523 9ff10419 2020-03-18 stsp 	for (i = 0; i < nref; i++){
524 93658fb9 2020-03-18 stsp 		if (got_object_id_cmp(&have[i], &want[i]) == 0)
525 93658fb9 2020-03-18 stsp 			continue;
526 93658fb9 2020-03-18 stsp 		if (got_has_object(&want[i]))
527 93658fb9 2020-03-18 stsp 			continue;
528 93658fb9 2020-03-18 stsp 		got_sha1_digest_to_str(want[i].sha1, hashstr, sizeof(hashstr));
529 13ce8c93 2020-03-18 stsp 		n = snprintf(buf, sizeof(buf), "want %s%s%s\n", hashstr,
530 13ce8c93 2020-03-18 stsp 		   i == 0 && my_capabilities ? " " : "",
531 8a29a085 2020-03-18 stsp 		   i == 0 && my_capabilities ? my_capabilities : "");
532 9ff10419 2020-03-18 stsp 		if (n >= sizeof(buf)) {
533 9ff10419 2020-03-18 stsp 			err = got_error(GOT_ERR_NO_SPACE);
534 9ff10419 2020-03-18 stsp 			goto done;
535 9ff10419 2020-03-18 stsp 		}
536 9ff10419 2020-03-18 stsp 		if (writepkt(fd, buf, n) == -1) {
537 9ff10419 2020-03-18 stsp 			err = got_error_from_errno("writepkt");
538 9ff10419 2020-03-18 stsp 			goto done;
539 9ff10419 2020-03-18 stsp 		}
540 93658fb9 2020-03-18 stsp 		req = 1;
541 93658fb9 2020-03-18 stsp 	}
542 93658fb9 2020-03-18 stsp 	flushpkt(fd);
543 9ff10419 2020-03-18 stsp 	for (i = 0; i < nref; i++){
544 93658fb9 2020-03-18 stsp 		if (got_object_id_cmp(&have[i], &zhash) == 0)
545 93658fb9 2020-03-18 stsp 			continue;
546 93658fb9 2020-03-18 stsp 		got_sha1_digest_to_str(want[i].sha1, hashstr, sizeof(hashstr));
547 93658fb9 2020-03-18 stsp 		n = snprintf(buf, sizeof(buf), "have %s\n", hashstr);
548 9ff10419 2020-03-18 stsp 		if (n >= sizeof(buf)) {
549 9ff10419 2020-03-18 stsp 			err = got_error(GOT_ERR_NO_SPACE);
550 9ff10419 2020-03-18 stsp 			goto done;
551 9ff10419 2020-03-18 stsp 		}
552 9ff10419 2020-03-18 stsp 		if (writepkt(fd, buf, n + 1) == -1) {
553 9ff10419 2020-03-18 stsp 			err = got_error_from_errno("writepkt");
554 9ff10419 2020-03-18 stsp 			goto done;
555 9ff10419 2020-03-18 stsp 		}
556 93658fb9 2020-03-18 stsp 	}
557 9ff10419 2020-03-18 stsp 	if (!req){
558 93658fb9 2020-03-18 stsp 		fprintf(stderr, "up to date\n");
559 93658fb9 2020-03-18 stsp 		flushpkt(fd);
560 93658fb9 2020-03-18 stsp 	}
561 93658fb9 2020-03-18 stsp 	n = snprintf(buf, sizeof(buf), "done\n");
562 9ff10419 2020-03-18 stsp 	if (writepkt(fd, buf, n) == -1) {
563 9ff10419 2020-03-18 stsp 		err = got_error_from_errno("writepkt");
564 9ff10419 2020-03-18 stsp 		goto done;
565 9ff10419 2020-03-18 stsp 	}
566 9ff10419 2020-03-18 stsp 	if (!req)
567 93658fb9 2020-03-18 stsp 		return 0;
568 93658fb9 2020-03-18 stsp 
569 9ff10419 2020-03-18 stsp 	if ((n = readpkt(fd, buf, sizeof(buf))) == -1) {
570 9ff10419 2020-03-18 stsp 		err = got_error_from_errno("readpkt");
571 9ff10419 2020-03-18 stsp 		goto done;
572 9ff10419 2020-03-18 stsp 	}
573 93658fb9 2020-03-18 stsp 	buf[n] = 0;
574 93658fb9 2020-03-18 stsp 
575 8f2d01a6 2020-03-18 stsp 	if (chattygit)
576 8f2d01a6 2020-03-18 stsp 		fprintf(stderr, "fetching...\n");
577 93658fb9 2020-03-18 stsp 	packsz = 0;
578 9ff10419 2020-03-18 stsp 	while (1) {
579 9ff10419 2020-03-18 stsp 		ssize_t w;
580 93658fb9 2020-03-18 stsp 		n = readn(fd, buf, sizeof buf);
581 9ff10419 2020-03-18 stsp 		if (n == 0)
582 93658fb9 2020-03-18 stsp 			break;
583 9ff10419 2020-03-18 stsp 		if (n == -1) {
584 9ff10419 2020-03-18 stsp 			err = got_error_from_errno("readn");
585 9ff10419 2020-03-18 stsp 			goto done;
586 9ff10419 2020-03-18 stsp 		}
587 9ff10419 2020-03-18 stsp 		w = write(packfd, buf, n);
588 9ff10419 2020-03-18 stsp 		if (w == -1) {
589 9ff10419 2020-03-18 stsp 			err = got_error_from_errno("write");
590 9ff10419 2020-03-18 stsp 			goto done;
591 9ff10419 2020-03-18 stsp 		}
592 9ff10419 2020-03-18 stsp 		if (w != n) {
593 9ff10419 2020-03-18 stsp 			err = got_error(GOT_ERR_IO);
594 9ff10419 2020-03-18 stsp 			goto done;
595 9ff10419 2020-03-18 stsp 		}
596 93658fb9 2020-03-18 stsp 		packsz += n;
597 93658fb9 2020-03-18 stsp 	}
598 9ff10419 2020-03-18 stsp 	if (lseek(packfd, 0, SEEK_SET) == -1) {
599 9ff10419 2020-03-18 stsp 		err = got_error_from_errno("lseek");
600 9ff10419 2020-03-18 stsp 		goto done;
601 9ff10419 2020-03-18 stsp 	}
602 9ff10419 2020-03-18 stsp 	if (got_check_pack_hash(packfd, packsz, packid->sha1) == -1)
603 9ff10419 2020-03-18 stsp 		err = got_error(GOT_ERR_BAD_PACKFILE);
604 9ff10419 2020-03-18 stsp done:
605 abe0f35f 2020-03-18 stsp 	TAILQ_FOREACH(pe, &symrefs, entry) {
606 abe0f35f 2020-03-18 stsp 		free((void *)pe->path);
607 abe0f35f 2020-03-18 stsp 		free(pe->data);
608 abe0f35f 2020-03-18 stsp 	}
609 abe0f35f 2020-03-18 stsp 	got_pathlist_free(&symrefs);
610 9ff10419 2020-03-18 stsp 	free(have);
611 9ff10419 2020-03-18 stsp 	free(want);
612 8f2d01a6 2020-03-18 stsp 	return err;
613 93658fb9 2020-03-18 stsp }
614 93658fb9 2020-03-18 stsp 
615 93658fb9 2020-03-18 stsp 
616 93658fb9 2020-03-18 stsp int
617 93658fb9 2020-03-18 stsp main(int argc, char **argv)
618 93658fb9 2020-03-18 stsp {
619 93658fb9 2020-03-18 stsp 	const struct got_error *err = NULL;
620 9ff10419 2020-03-18 stsp 	int fetchfd, packfd = -1;
621 93658fb9 2020-03-18 stsp 	struct got_object_id packid;
622 93658fb9 2020-03-18 stsp 	struct imsgbuf ibuf;
623 93658fb9 2020-03-18 stsp 	struct imsg imsg;
624 93658fb9 2020-03-18 stsp 
625 93658fb9 2020-03-18 stsp 	if(getenv("GOT_DEBUG") != NULL){
626 93658fb9 2020-03-18 stsp 		fprintf(stderr, "fetch-pack being chatty!\n");
627 93658fb9 2020-03-18 stsp 		chattygit = 1;
628 93658fb9 2020-03-18 stsp 	}
629 93658fb9 2020-03-18 stsp 
630 93658fb9 2020-03-18 stsp 	imsg_init(&ibuf, GOT_IMSG_FD_CHILD);
631 93658fb9 2020-03-18 stsp 	if((err = got_privsep_recv_imsg(&imsg, &ibuf, 0)) != 0) {
632 93658fb9 2020-03-18 stsp 		if (err->code == GOT_ERR_PRIVSEP_PIPE)
633 93658fb9 2020-03-18 stsp 			err = NULL;
634 93658fb9 2020-03-18 stsp 		goto done;
635 93658fb9 2020-03-18 stsp 	}
636 93658fb9 2020-03-18 stsp 	if (imsg.hdr.type == GOT_IMSG_STOP)
637 93658fb9 2020-03-18 stsp 		goto done;
638 93658fb9 2020-03-18 stsp 	if (imsg.hdr.type != GOT_IMSG_FETCH_REQUEST) {
639 93658fb9 2020-03-18 stsp 		err = got_error(GOT_ERR_PRIVSEP_MSG);
640 93658fb9 2020-03-18 stsp 		goto done;
641 93658fb9 2020-03-18 stsp 	}
642 93658fb9 2020-03-18 stsp 	if (imsg.hdr.len - IMSG_HEADER_SIZE != 0) {
643 93658fb9 2020-03-18 stsp 		err = got_error(GOT_ERR_PRIVSEP_LEN);
644 93658fb9 2020-03-18 stsp 		goto done;
645 93658fb9 2020-03-18 stsp 	}
646 93658fb9 2020-03-18 stsp 	fetchfd = imsg.fd;
647 93658fb9 2020-03-18 stsp 
648 93658fb9 2020-03-18 stsp 	if((err = got_privsep_recv_imsg(&imsg, &ibuf, 0)) != 0) {
649 93658fb9 2020-03-18 stsp 		if (err->code == GOT_ERR_PRIVSEP_PIPE)
650 93658fb9 2020-03-18 stsp 			err = NULL;
651 93658fb9 2020-03-18 stsp 		goto done;
652 93658fb9 2020-03-18 stsp 	}
653 93658fb9 2020-03-18 stsp 	if (imsg.hdr.type == GOT_IMSG_STOP)
654 93658fb9 2020-03-18 stsp 		goto done;
655 93658fb9 2020-03-18 stsp 	if (imsg.hdr.type != GOT_IMSG_TMPFD) {
656 93658fb9 2020-03-18 stsp 		err = got_error(GOT_ERR_PRIVSEP_MSG);
657 93658fb9 2020-03-18 stsp 		goto done;
658 93658fb9 2020-03-18 stsp 	}
659 93658fb9 2020-03-18 stsp 	if (imsg.hdr.len - IMSG_HEADER_SIZE != 0) {
660 93658fb9 2020-03-18 stsp 		err = got_error(GOT_ERR_PRIVSEP_LEN);
661 93658fb9 2020-03-18 stsp 		goto done;
662 93658fb9 2020-03-18 stsp 	}
663 93658fb9 2020-03-18 stsp 	packfd = imsg.fd;
664 93658fb9 2020-03-18 stsp 
665 8f2d01a6 2020-03-18 stsp 	err = fetch_pack(fetchfd, packfd, &packid, &ibuf);
666 9ff10419 2020-03-18 stsp 	if (err)
667 93658fb9 2020-03-18 stsp 		goto done;
668 93658fb9 2020-03-18 stsp done:
669 9ff10419 2020-03-18 stsp 	if (packfd != -1 && close(packfd) == -1 && err == NULL)
670 9ff10419 2020-03-18 stsp 		err = got_error_from_errno("close");
671 9ff10419 2020-03-18 stsp 	if (err != NULL)
672 93658fb9 2020-03-18 stsp 		got_privsep_send_error(&ibuf, err);
673 93658fb9 2020-03-18 stsp 	else
674 93658fb9 2020-03-18 stsp 		err = got_privsep_send_fetch_done(&ibuf, packid);
675 93658fb9 2020-03-18 stsp 	if(err != NULL) {
676 93658fb9 2020-03-18 stsp 		fprintf(stderr, "%s: %s\n", getprogname(), err->msg);
677 93658fb9 2020-03-18 stsp 		got_privsep_send_error(&ibuf, err);
678 93658fb9 2020-03-18 stsp 	}
679 93658fb9 2020-03-18 stsp 
680 93658fb9 2020-03-18 stsp 	exit(0);
681 93658fb9 2020-03-18 stsp }