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_inflate.h"
 46 93658fb9 2020-03-18 stsp #include "got_lib_object.h"
 47 93658fb9 2020-03-18 stsp #include "got_lib_object_parse.h"
 48 93658fb9 2020-03-18 stsp #include "got_lib_privsep.h"
 49 93658fb9 2020-03-18 stsp 
 50 8a29a085 2020-03-18 stsp #ifndef nitems
 51 8a29a085 2020-03-18 stsp #define nitems(_a)	(sizeof((_a)) / sizeof((_a)[0]))
 52 8a29a085 2020-03-18 stsp #endif
 53 8a29a085 2020-03-18 stsp 
 54 93658fb9 2020-03-18 stsp #define GOT_PKTMAX	65536
 55 93658fb9 2020-03-18 stsp 
 56 93658fb9 2020-03-18 stsp struct got_object *indexed;
 57 93658fb9 2020-03-18 stsp static int chattygit;
 58 93658fb9 2020-03-18 stsp static char *fetchbranch;
 59 93658fb9 2020-03-18 stsp static char *upstream = "origin";
 60 93658fb9 2020-03-18 stsp static struct got_object_id zhash = {.sha1={0}};
 61 93658fb9 2020-03-18 stsp 
 62 93658fb9 2020-03-18 stsp static char*
 63 93658fb9 2020-03-18 stsp strip(char *ref)
 64 93658fb9 2020-03-18 stsp {
 65 93658fb9 2020-03-18 stsp 	return ref;
 66 93658fb9 2020-03-18 stsp }
 67 93658fb9 2020-03-18 stsp 
 68 93658fb9 2020-03-18 stsp int
 69 93658fb9 2020-03-18 stsp readn(int fd, void *buf, size_t n)
 70 93658fb9 2020-03-18 stsp {
 71 93658fb9 2020-03-18 stsp 	ssize_t r, off;
 72 93658fb9 2020-03-18 stsp 
 73 93658fb9 2020-03-18 stsp 	off = 0;
 74 93658fb9 2020-03-18 stsp 	while (off != n) {
 75 93658fb9 2020-03-18 stsp 		r = read(fd, buf + off, n - off);
 76 93658fb9 2020-03-18 stsp 		if (r < 0)
 77 93658fb9 2020-03-18 stsp 			return -1;
 78 93658fb9 2020-03-18 stsp 		if (r == 0)
 79 93658fb9 2020-03-18 stsp 			return off;
 80 93658fb9 2020-03-18 stsp 		off += r;
 81 93658fb9 2020-03-18 stsp 	}
 82 93658fb9 2020-03-18 stsp 	return off;
 83 93658fb9 2020-03-18 stsp }
 84 93658fb9 2020-03-18 stsp 
 85 93658fb9 2020-03-18 stsp int
 86 93658fb9 2020-03-18 stsp flushpkt(int fd)
 87 93658fb9 2020-03-18 stsp {
 88 93658fb9 2020-03-18 stsp 	if(chattygit)
 89 93658fb9 2020-03-18 stsp 		fprintf(stderr, "writepkt: 0000\n");
 90 93658fb9 2020-03-18 stsp 	return write(fd, "0000", 4);
 91 93658fb9 2020-03-18 stsp }
 92 93658fb9 2020-03-18 stsp 
 93 93658fb9 2020-03-18 stsp 
 94 93658fb9 2020-03-18 stsp int
 95 93658fb9 2020-03-18 stsp readpkt(int fd, char *buf, int nbuf)
 96 93658fb9 2020-03-18 stsp {
 97 93658fb9 2020-03-18 stsp 	char len[5];
 98 93658fb9 2020-03-18 stsp 	char *e;
 99 93658fb9 2020-03-18 stsp 	int n, r;
100 93658fb9 2020-03-18 stsp 
101 93658fb9 2020-03-18 stsp 	if(readn(fd, len, 4) == -1){
102 93658fb9 2020-03-18 stsp 		return -1;
103 93658fb9 2020-03-18 stsp 	}
104 93658fb9 2020-03-18 stsp 	len[4] = 0;
105 93658fb9 2020-03-18 stsp 	n = strtol(len, &e, 16);
106 93658fb9 2020-03-18 stsp 	if(n == 0){
107 93658fb9 2020-03-18 stsp 		if(chattygit)
108 93658fb9 2020-03-18 stsp 			fprintf(stderr, "readpkt: 0000\n");
109 93658fb9 2020-03-18 stsp 		return 0;
110 93658fb9 2020-03-18 stsp 	}
111 93658fb9 2020-03-18 stsp 	if(e != len + 4 || n <= 4)
112 93658fb9 2020-03-18 stsp 		err(1, "invalid packet line length");
113 93658fb9 2020-03-18 stsp 	n  -= 4;
114 93658fb9 2020-03-18 stsp 	if(n >= nbuf)
115 93658fb9 2020-03-18 stsp 		err(1, "buffer too small");
116 93658fb9 2020-03-18 stsp 	if((r = readn(fd, buf, n)) != n)
117 93658fb9 2020-03-18 stsp 		return -1;
118 93658fb9 2020-03-18 stsp 	buf[n] = 0;
119 93658fb9 2020-03-18 stsp 	if(chattygit)
120 93658fb9 2020-03-18 stsp 		fprintf(stderr, "readpkt: %s:\t%.*s\n", len, nbuf, buf);
121 93658fb9 2020-03-18 stsp 	return n;
122 93658fb9 2020-03-18 stsp }
123 93658fb9 2020-03-18 stsp 
124 93658fb9 2020-03-18 stsp int
125 93658fb9 2020-03-18 stsp writepkt(int fd, char *buf, int nbuf)
126 93658fb9 2020-03-18 stsp {
127 93658fb9 2020-03-18 stsp 	char len[5];
128 93658fb9 2020-03-18 stsp 	int i;
129 93658fb9 2020-03-18 stsp 
130 93658fb9 2020-03-18 stsp 	if (snprintf(len, sizeof(len), "%04x", nbuf + 4) >= sizeof(len))
131 93658fb9 2020-03-18 stsp 		return -1;
132 93658fb9 2020-03-18 stsp 	if(write(fd, len, 4) != 4)
133 93658fb9 2020-03-18 stsp 		return -1;
134 93658fb9 2020-03-18 stsp 	if(write(fd, buf, nbuf) != nbuf)
135 93658fb9 2020-03-18 stsp 		return -1;
136 93658fb9 2020-03-18 stsp 	if(chattygit){
137 93658fb9 2020-03-18 stsp 		fprintf(stderr, "writepkt: %s:\t", len);
138 93658fb9 2020-03-18 stsp 		fwrite(buf, 1, nbuf, stderr);
139 93658fb9 2020-03-18 stsp 		for(i = 0; i < nbuf; i++){
140 93658fb9 2020-03-18 stsp 			if(isprint(buf[i]))
141 93658fb9 2020-03-18 stsp 				fputc(buf[i], stderr);
142 93658fb9 2020-03-18 stsp 		}
143 93658fb9 2020-03-18 stsp 	}
144 93658fb9 2020-03-18 stsp 	return 0;
145 93658fb9 2020-03-18 stsp }
146 93658fb9 2020-03-18 stsp 
147 93658fb9 2020-03-18 stsp 
148 93658fb9 2020-03-18 stsp int
149 93658fb9 2020-03-18 stsp got_resolve_remote_ref(struct got_object_id *id, char *ref)
150 93658fb9 2020-03-18 stsp {
151 93658fb9 2020-03-18 stsp 	char buf[128], *s;
152 93658fb9 2020-03-18 stsp 	int r, f;
153 93658fb9 2020-03-18 stsp 
154 93658fb9 2020-03-18 stsp 	ref = strip(ref);
155 93658fb9 2020-03-18 stsp 	if(!got_parse_sha1_digest(id->sha1, ref))
156 93658fb9 2020-03-18 stsp 		return 0;
157 93658fb9 2020-03-18 stsp 
158 93658fb9 2020-03-18 stsp 	/* Slightly special handling: translate remote refs to local ones. */
159 93658fb9 2020-03-18 stsp 	if (strcmp(ref, "HEAD") == 0) {
160 93658fb9 2020-03-18 stsp 		if(snprintf(buf, sizeof(buf), ".git/HEAD") >= sizeof(buf))
161 93658fb9 2020-03-18 stsp 			return -1;
162 93658fb9 2020-03-18 stsp 	} else if(strstr(ref, "refs/heads") == ref) {
163 93658fb9 2020-03-18 stsp 		ref += strlen("refs/heads");
164 93658fb9 2020-03-18 stsp 		if(snprintf(buf, sizeof(buf),
165 93658fb9 2020-03-18 stsp 		    ".git/refs/remotes/%s/%s", upstream, ref) >= sizeof(buf))
166 93658fb9 2020-03-18 stsp 			return -1;
167 93658fb9 2020-03-18 stsp 	} else if(strstr(ref, "refs/tags") == ref) {
168 93658fb9 2020-03-18 stsp 		ref += strlen("refs/tags");
169 93658fb9 2020-03-18 stsp 		if(snprintf(buf, sizeof(buf),
170 93658fb9 2020-03-18 stsp 		    ".git/refs/tags/%s/%s", upstream, ref) >= sizeof(buf))
171 93658fb9 2020-03-18 stsp 			return -1;
172 93658fb9 2020-03-18 stsp 	} else {
173 93658fb9 2020-03-18 stsp 		return -1;
174 93658fb9 2020-03-18 stsp 	}
175 93658fb9 2020-03-18 stsp 
176 93658fb9 2020-03-18 stsp 	r = -1;
177 93658fb9 2020-03-18 stsp 	s = strip(buf);
178 93658fb9 2020-03-18 stsp 	if((f = open(s, O_RDONLY)) == -1)
179 93658fb9 2020-03-18 stsp 		goto err;
180 93658fb9 2020-03-18 stsp 	if(readn(f, buf, sizeof(buf)) < 40)
181 93658fb9 2020-03-18 stsp 		goto err;
182 93658fb9 2020-03-18 stsp 	if(!got_parse_sha1_digest(id->sha1, buf))
183 93658fb9 2020-03-18 stsp 		goto err;
184 93658fb9 2020-03-18 stsp err:
185 93658fb9 2020-03-18 stsp 	close(f);
186 93658fb9 2020-03-18 stsp 	if(r == -1 && strstr(buf, "ref:") == buf)
187 93658fb9 2020-03-18 stsp 		return got_resolve_remote_ref(id, buf + strlen("ref:"));
188 93658fb9 2020-03-18 stsp 	return r;
189 93658fb9 2020-03-18 stsp }
190 93658fb9 2020-03-18 stsp 
191 93658fb9 2020-03-18 stsp static int
192 93658fb9 2020-03-18 stsp got_check_pack_hash(int fd, size_t sz, uint8_t *hcomp)
193 93658fb9 2020-03-18 stsp {
194 93658fb9 2020-03-18 stsp 	SHA1_CTX ctx;
195 93658fb9 2020-03-18 stsp 	uint8_t hexpect[SHA1_DIGEST_LENGTH];
196 93658fb9 2020-03-18 stsp 	char s1[SHA1_DIGEST_STRING_LENGTH + 1];
197 93658fb9 2020-03-18 stsp 	char s2[SHA1_DIGEST_STRING_LENGTH + 1];
198 93658fb9 2020-03-18 stsp 	uint8_t buf[32*1024];
199 93658fb9 2020-03-18 stsp 	ssize_t n, r, nr;
200 93658fb9 2020-03-18 stsp 
201 93658fb9 2020-03-18 stsp 	if(sz < 28)
202 93658fb9 2020-03-18 stsp 		return -1;
203 93658fb9 2020-03-18 stsp 
204 93658fb9 2020-03-18 stsp 	n = 0;
205 93658fb9 2020-03-18 stsp 	SHA1Init(&ctx);
206 93658fb9 2020-03-18 stsp 	while(n < sz - 20){
207 93658fb9 2020-03-18 stsp 		nr = sizeof(buf);
208 93658fb9 2020-03-18 stsp 		if(sz - n - 20 < sizeof(buf))
209 93658fb9 2020-03-18 stsp 			nr = sz - n - 20;
210 93658fb9 2020-03-18 stsp 		r = readn(fd, buf, nr);
211 93658fb9 2020-03-18 stsp 		if(r != nr)
212 93658fb9 2020-03-18 stsp 			return -1;
213 93658fb9 2020-03-18 stsp 		SHA1Update(&ctx, buf, nr);
214 93658fb9 2020-03-18 stsp 		n += r;
215 93658fb9 2020-03-18 stsp 	}
216 93658fb9 2020-03-18 stsp 	SHA1Final(hcomp, &ctx);
217 93658fb9 2020-03-18 stsp 
218 93658fb9 2020-03-18 stsp 	if(readn(fd, hexpect, sizeof(hexpect)) != sizeof(hexpect))
219 93658fb9 2020-03-18 stsp 		errx(1, "truncated packfile");
220 93658fb9 2020-03-18 stsp 	if(memcmp(hcomp, hexpect, SHA1_DIGEST_LENGTH) != 0){
221 93658fb9 2020-03-18 stsp 		got_sha1_digest_to_str(hcomp, s1, sizeof(s1));
222 93658fb9 2020-03-18 stsp 		got_sha1_digest_to_str(hexpect, s2, sizeof(s2));
223 93658fb9 2020-03-18 stsp 		printf("hash mismatch %s != %s\n", s1, s2);
224 93658fb9 2020-03-18 stsp 		return -1;
225 93658fb9 2020-03-18 stsp 	}
226 93658fb9 2020-03-18 stsp 	return 0;
227 93658fb9 2020-03-18 stsp }
228 93658fb9 2020-03-18 stsp 
229 93658fb9 2020-03-18 stsp int
230 93658fb9 2020-03-18 stsp got_has_object(struct got_object_id *obj)
231 93658fb9 2020-03-18 stsp {
232 93658fb9 2020-03-18 stsp 	return 0;
233 93658fb9 2020-03-18 stsp }
234 93658fb9 2020-03-18 stsp 
235 93658fb9 2020-03-18 stsp /*static */int
236 93658fb9 2020-03-18 stsp got_make_pack_dir(char *path)
237 93658fb9 2020-03-18 stsp {
238 93658fb9 2020-03-18 stsp 	char s[128];
239 93658fb9 2020-03-18 stsp 	char *p;
240 93658fb9 2020-03-18 stsp 
241 93658fb9 2020-03-18 stsp 	if(snprintf(s, sizeof(s), "%s", path) >= sizeof(s))
242 93658fb9 2020-03-18 stsp 		return -1;
243 93658fb9 2020-03-18 stsp 	for(p=strchr(s+1, '/'); p; p=strchr(p+1, '/')){
244 93658fb9 2020-03-18 stsp 		*p = 0;
245 93658fb9 2020-03-18 stsp 		if (mkdir(s, 0755) == -1)
246 93658fb9 2020-03-18 stsp 			if(errno != EEXIST)
247 93658fb9 2020-03-18 stsp 				return -1;
248 93658fb9 2020-03-18 stsp 		*p = '/';
249 93658fb9 2020-03-18 stsp 	}
250 93658fb9 2020-03-18 stsp 	return 0;
251 93658fb9 2020-03-18 stsp }
252 93658fb9 2020-03-18 stsp 
253 93658fb9 2020-03-18 stsp static int
254 93658fb9 2020-03-18 stsp got_match_branch(char *br, char *pat)
255 93658fb9 2020-03-18 stsp {
256 93658fb9 2020-03-18 stsp 	char name[128];
257 93658fb9 2020-03-18 stsp 
258 93658fb9 2020-03-18 stsp 	if(strstr(pat, "refs/heads") == pat) {
259 93658fb9 2020-03-18 stsp 		if (snprintf(name, sizeof(name), "%s", pat) >= sizeof(name))
260 93658fb9 2020-03-18 stsp 			return -1;
261 93658fb9 2020-03-18 stsp 	} else if(strstr(pat, "heads")) {
262 93658fb9 2020-03-18 stsp 		if (snprintf(name, sizeof(name), "refs/%s", pat) >= sizeof(name))
263 93658fb9 2020-03-18 stsp 			return -1;
264 93658fb9 2020-03-18 stsp 	} else {
265 93658fb9 2020-03-18 stsp 		if (snprintf(name, sizeof(name), "refs/heads/%s", pat) >= sizeof(name))
266 93658fb9 2020-03-18 stsp 			return -1;
267 93658fb9 2020-03-18 stsp 	}
268 93658fb9 2020-03-18 stsp 	return strcmp(br, name) == 0;
269 93658fb9 2020-03-18 stsp }
270 93658fb9 2020-03-18 stsp 
271 0d0a341c 2020-03-18 stsp static const struct got_error *
272 0d0a341c 2020-03-18 stsp got_tokenize_refline(char **tokens, char *line, int len)
273 93658fb9 2020-03-18 stsp {
274 0d0a341c 2020-03-18 stsp 	const struct got_error *err = NULL;
275 93658fb9 2020-03-18 stsp 	char *p;
276 0d0a341c 2020-03-18 stsp 	size_t i, n = 0;
277 0d0a341c 2020-03-18 stsp 	const int maxtokens = 3;
278 93658fb9 2020-03-18 stsp 
279 0d0a341c 2020-03-18 stsp 	for (i = 0; i < maxtokens; i++)
280 0d0a341c 2020-03-18 stsp 		tokens[i] = NULL;
281 0d0a341c 2020-03-18 stsp 
282 0d0a341c 2020-03-18 stsp 	for (i = 0; n < len && i < maxtokens; i++) {
283 0d0a341c 2020-03-18 stsp 		while (isspace(*line)) {
284 93658fb9 2020-03-18 stsp 			line++;
285 0d0a341c 2020-03-18 stsp 			n++;
286 0d0a341c 2020-03-18 stsp 		}
287 93658fb9 2020-03-18 stsp 		p = line;
288 0d0a341c 2020-03-18 stsp 		while (*line != '\0' &&
289 0d0a341c 2020-03-18 stsp 		    (!isspace(*line) || i == maxtokens - 1)) {
290 93658fb9 2020-03-18 stsp 			line++;
291 0d0a341c 2020-03-18 stsp 			n++;
292 0d0a341c 2020-03-18 stsp 		}
293 0d0a341c 2020-03-18 stsp 		tokens[i] = strndup(p, line - p);
294 0d0a341c 2020-03-18 stsp 		if (tokens[i] == NULL) {
295 0d0a341c 2020-03-18 stsp 			err = got_error_from_errno("strndup");
296 0d0a341c 2020-03-18 stsp 			goto done;
297 0d0a341c 2020-03-18 stsp 		}
298 0d0a341c 2020-03-18 stsp 		/* Skip \0 field-delimiter at end of token. */
299 0d0a341c 2020-03-18 stsp 		while (line[0] == '\0' && n < len) {
300 0d0a341c 2020-03-18 stsp 			line++;
301 0d0a341c 2020-03-18 stsp 			n++;
302 0d0a341c 2020-03-18 stsp 		}
303 93658fb9 2020-03-18 stsp 	}
304 0d0a341c 2020-03-18 stsp 	if (i <= 2)
305 0d0a341c 2020-03-18 stsp 		err = got_error(GOT_ERR_NOT_REF);
306 0d0a341c 2020-03-18 stsp done:
307 0d0a341c 2020-03-18 stsp 	if (err) {
308 0d0a341c 2020-03-18 stsp 		int j;
309 0d0a341c 2020-03-18 stsp 		for (j = 0; j < i; j++)
310 0d0a341c 2020-03-18 stsp 			free(tokens[j]);
311 0d0a341c 2020-03-18 stsp 			tokens[j] = NULL;
312 0d0a341c 2020-03-18 stsp 	}
313 0d0a341c 2020-03-18 stsp 	return err;
314 8a29a085 2020-03-18 stsp }
315 8a29a085 2020-03-18 stsp 
316 8a29a085 2020-03-18 stsp struct got_capability {
317 8a29a085 2020-03-18 stsp 	const char *key;
318 8a29a085 2020-03-18 stsp 	const char *value;
319 8a29a085 2020-03-18 stsp };
320 8a29a085 2020-03-18 stsp static const struct got_capability got_capabilities[] = {
321 8a29a085 2020-03-18 stsp #if 0 /* got-index-pack is not ready for this */
322 8a29a085 2020-03-18 stsp 	{ "ofs-delta", NULL },
323 8a29a085 2020-03-18 stsp #endif
324 8a29a085 2020-03-18 stsp 	{ "agent", "got/" GOT_VERSION_STR },
325 8a29a085 2020-03-18 stsp };
326 8a29a085 2020-03-18 stsp 
327 8a29a085 2020-03-18 stsp static const struct got_error *
328 8a29a085 2020-03-18 stsp match_capability(char **my_capabilities, const char *capa,
329 8a29a085 2020-03-18 stsp     const struct got_capability *mycapa)
330 8a29a085 2020-03-18 stsp {
331 8a29a085 2020-03-18 stsp 	char *equalsign;
332 8a29a085 2020-03-18 stsp 	char *s;
333 8a29a085 2020-03-18 stsp 
334 8a29a085 2020-03-18 stsp 	equalsign = strchr(capa, '=');
335 8a29a085 2020-03-18 stsp 	if (equalsign) {
336 8a29a085 2020-03-18 stsp 		if (strncmp(capa, mycapa->key, equalsign - capa) != 0)
337 8a29a085 2020-03-18 stsp 			return NULL;
338 8a29a085 2020-03-18 stsp 	} else {
339 8a29a085 2020-03-18 stsp 		if (strcmp(capa, mycapa->key) != 0)
340 8a29a085 2020-03-18 stsp 			return NULL;
341 8a29a085 2020-03-18 stsp 	}
342 8a29a085 2020-03-18 stsp 
343 8a29a085 2020-03-18 stsp 	if (asprintf(&s, "%s%s%s%s%s",
344 8a29a085 2020-03-18 stsp 	    *my_capabilities != NULL ? *my_capabilities : "",
345 8a29a085 2020-03-18 stsp 	    *my_capabilities != NULL ? " " : "",
346 8a29a085 2020-03-18 stsp 	    mycapa->key,
347 8a29a085 2020-03-18 stsp 	    mycapa->value != NULL ? "=" : "",
348 8a29a085 2020-03-18 stsp 	    mycapa->value != NULL? mycapa->value : "") == -1)
349 8a29a085 2020-03-18 stsp 		return got_error_from_errno("asprintf");
350 8a29a085 2020-03-18 stsp 
351 8a29a085 2020-03-18 stsp 	free(*my_capabilities);
352 8a29a085 2020-03-18 stsp 	*my_capabilities = s;
353 8a29a085 2020-03-18 stsp 	return NULL;
354 93658fb9 2020-03-18 stsp }
355 93658fb9 2020-03-18 stsp 
356 9ff10419 2020-03-18 stsp static const struct got_error *
357 abe0f35f 2020-03-18 stsp add_symref(struct got_pathlist_head *symrefs, const char *capa)
358 8a29a085 2020-03-18 stsp {
359 8a29a085 2020-03-18 stsp 	const struct got_error *err = NULL;
360 abe0f35f 2020-03-18 stsp 	char *colon, *name = NULL, *target = NULL;
361 abe0f35f 2020-03-18 stsp 
362 abe0f35f 2020-03-18 stsp 	/* Need at least "A:B" */
363 abe0f35f 2020-03-18 stsp 	if (strlen(capa) < 3)
364 abe0f35f 2020-03-18 stsp 		return NULL;
365 abe0f35f 2020-03-18 stsp 
366 abe0f35f 2020-03-18 stsp 	colon = strchr(capa, ':');
367 abe0f35f 2020-03-18 stsp 	if (colon == NULL)
368 abe0f35f 2020-03-18 stsp 		return NULL;
369 abe0f35f 2020-03-18 stsp 
370 abe0f35f 2020-03-18 stsp 	*colon = '\0';
371 abe0f35f 2020-03-18 stsp 	name = strdup(capa);
372 abe0f35f 2020-03-18 stsp 	if (name == NULL)
373 abe0f35f 2020-03-18 stsp 		return got_error_from_errno("strdup");
374 abe0f35f 2020-03-18 stsp 
375 abe0f35f 2020-03-18 stsp 	target = strdup(colon + 1);
376 abe0f35f 2020-03-18 stsp 	if (target == NULL) {
377 abe0f35f 2020-03-18 stsp 		err = got_error_from_errno("strdup");
378 abe0f35f 2020-03-18 stsp 		goto done;
379 abe0f35f 2020-03-18 stsp 	}
380 abe0f35f 2020-03-18 stsp 
381 abe0f35f 2020-03-18 stsp 	/* We can't validate the ref itself here. The main process will. */
382 abe0f35f 2020-03-18 stsp 	err = got_pathlist_append(symrefs, name, target);
383 abe0f35f 2020-03-18 stsp done:
384 abe0f35f 2020-03-18 stsp 	if (err) {
385 abe0f35f 2020-03-18 stsp 		free(name);
386 abe0f35f 2020-03-18 stsp 		free(target);
387 abe0f35f 2020-03-18 stsp 	}
388 abe0f35f 2020-03-18 stsp 	return err;
389 abe0f35f 2020-03-18 stsp }
390 abe0f35f 2020-03-18 stsp 
391 abe0f35f 2020-03-18 stsp static const struct got_error *
392 abe0f35f 2020-03-18 stsp match_capabilities(char **my_capabilities, struct got_pathlist_head *symrefs,
393 abe0f35f 2020-03-18 stsp     char *server_capabilities)
394 abe0f35f 2020-03-18 stsp {
395 abe0f35f 2020-03-18 stsp 	const struct got_error *err = NULL;
396 abe0f35f 2020-03-18 stsp 	char *capa, *equalsign;
397 8a29a085 2020-03-18 stsp 	int i;
398 8a29a085 2020-03-18 stsp 
399 8a29a085 2020-03-18 stsp 	*my_capabilities = NULL;
400 8a29a085 2020-03-18 stsp 	do {
401 8a29a085 2020-03-18 stsp 		capa = strsep(&server_capabilities, " ");
402 8a29a085 2020-03-18 stsp 		if (capa == NULL)
403 8a29a085 2020-03-18 stsp 			return NULL;
404 8a29a085 2020-03-18 stsp 
405 abe0f35f 2020-03-18 stsp 		equalsign = strchr(capa, '=');
406 abe0f35f 2020-03-18 stsp 		if (equalsign != NULL &&
407 abe0f35f 2020-03-18 stsp 		    strncmp(capa, "symref", equalsign - capa) == 0) {
408 abe0f35f 2020-03-18 stsp 			err = add_symref(symrefs, equalsign + 1);
409 abe0f35f 2020-03-18 stsp 			if (err)
410 abe0f35f 2020-03-18 stsp 				break;
411 abe0f35f 2020-03-18 stsp 			continue;
412 abe0f35f 2020-03-18 stsp 		}
413 abe0f35f 2020-03-18 stsp 
414 8a29a085 2020-03-18 stsp 		for (i = 0; i < nitems(got_capabilities); i++) {
415 8a29a085 2020-03-18 stsp 			err = match_capability(my_capabilities,
416 8a29a085 2020-03-18 stsp 			    capa, &got_capabilities[i]);
417 8a29a085 2020-03-18 stsp 			if (err)
418 8a29a085 2020-03-18 stsp 				break;
419 8a29a085 2020-03-18 stsp 		}
420 8a29a085 2020-03-18 stsp 	} while (capa);
421 8a29a085 2020-03-18 stsp 
422 8a29a085 2020-03-18 stsp 	return err;
423 8a29a085 2020-03-18 stsp }
424 abe0f35f 2020-03-18 stsp 
425 8a29a085 2020-03-18 stsp static const struct got_error *
426 8f2d01a6 2020-03-18 stsp fetch_pack(int fd, int packfd, struct got_object_id *packid,
427 8f2d01a6 2020-03-18 stsp     struct imsgbuf *ibuf)
428 93658fb9 2020-03-18 stsp {
429 9ff10419 2020-03-18 stsp 	const struct got_error *err = NULL;
430 ccbf9d19 2020-03-18 stsp 	char buf[GOT_PKTMAX], *sp[3];
431 93658fb9 2020-03-18 stsp 	char hashstr[SHA1_DIGEST_STRING_LENGTH];
432 93658fb9 2020-03-18 stsp 	struct got_object_id *have, *want;
433 8a29a085 2020-03-18 stsp 	int is_firstpkt = 1, nref = 0, refsz = 16;
434 93658fb9 2020-03-18 stsp 	int i, n, req;
435 93658fb9 2020-03-18 stsp 	off_t packsz;
436 8a29a085 2020-03-18 stsp 	char *my_capabilities = NULL;
437 abe0f35f 2020-03-18 stsp 	struct got_pathlist_head symrefs;
438 abe0f35f 2020-03-18 stsp 	struct got_pathlist_entry *pe;
439 93658fb9 2020-03-18 stsp 
440 abe0f35f 2020-03-18 stsp 	TAILQ_INIT(&symrefs);
441 abe0f35f 2020-03-18 stsp 
442 93658fb9 2020-03-18 stsp 	have = malloc(refsz * sizeof(have[0]));
443 9ff10419 2020-03-18 stsp 	if (have == NULL)
444 9ff10419 2020-03-18 stsp 		return got_error_from_errno("malloc");
445 93658fb9 2020-03-18 stsp 	want = malloc(refsz * sizeof(want[0]));
446 9ff10419 2020-03-18 stsp 	if (want == NULL) {
447 9ff10419 2020-03-18 stsp 		err = got_error_from_errno("malloc");
448 9ff10419 2020-03-18 stsp 		goto done;
449 9ff10419 2020-03-18 stsp 	}
450 9ff10419 2020-03-18 stsp 	if (chattygit)
451 9ff10419 2020-03-18 stsp 		fprintf(stderr, "starting fetch\n");
452 9ff10419 2020-03-18 stsp 	while (1) {
453 93658fb9 2020-03-18 stsp 		n = readpkt(fd, buf, sizeof(buf));
454 9ff10419 2020-03-18 stsp 		if (n == -1){
455 9b45e112 2020-03-18 stsp 			err = got_error_from_errno("readpkt");
456 9ff10419 2020-03-18 stsp 			goto done;
457 9ff10419 2020-03-18 stsp 		}
458 9ff10419 2020-03-18 stsp 		if (n == 0)
459 93658fb9 2020-03-18 stsp 			break;
460 a6f88e33 2020-03-18 stsp 		if (n >= 4 && strncmp(buf, "ERR ", 4) == 0) {
461 9ff10419 2020-03-18 stsp 			static char msg[1024];
462 a6f88e33 2020-03-18 stsp 			for (i = 0; i < n && i < sizeof(msg) - 1; i++) {
463 a6f88e33 2020-03-18 stsp 				if (!isprint(buf[i])) {
464 a6f88e33 2020-03-18 stsp 					err = got_error(GOT_ERR_FETCH_FAILED);
465 a6f88e33 2020-03-18 stsp 					goto done;
466 a6f88e33 2020-03-18 stsp 				}
467 a6f88e33 2020-03-18 stsp 				msg[i] = buf[i];
468 a6f88e33 2020-03-18 stsp 			}
469 a6f88e33 2020-03-18 stsp 			msg[i] = '\0';
470 9ff10419 2020-03-18 stsp 			err = got_error_msg(GOT_ERR_FETCH_FAILED, msg);
471 9ff10419 2020-03-18 stsp 			goto done;
472 9ff10419 2020-03-18 stsp 		}
473 0d0a341c 2020-03-18 stsp 		err = got_tokenize_refline(sp, buf, n);
474 0d0a341c 2020-03-18 stsp 		if (err)
475 9ff10419 2020-03-18 stsp 			goto done;
476 0d0a341c 2020-03-18 stsp 		if (chattygit && sp[2][0] != '\0')
477 8a29a085 2020-03-18 stsp 			fprintf(stderr, "server capabilities: %s\n", sp[2]);
478 8a29a085 2020-03-18 stsp 		if (is_firstpkt) {
479 abe0f35f 2020-03-18 stsp 			err = match_capabilities(&my_capabilities, &symrefs,
480 abe0f35f 2020-03-18 stsp 			    sp[2]);
481 8a29a085 2020-03-18 stsp 			if (err)
482 8a29a085 2020-03-18 stsp 				goto done;
483 8a29a085 2020-03-18 stsp 			if (chattygit && my_capabilities)
484 8a29a085 2020-03-18 stsp 				fprintf(stderr, "my matched capabilities: %s\n",
485 8a29a085 2020-03-18 stsp 				    my_capabilities);
486 abe0f35f 2020-03-18 stsp 			err = got_privsep_send_fetch_symrefs(ibuf, &symrefs);
487 abe0f35f 2020-03-18 stsp 			if (err)
488 abe0f35f 2020-03-18 stsp 				goto done;
489 8a29a085 2020-03-18 stsp 		}
490 8a29a085 2020-03-18 stsp 		is_firstpkt = 0;
491 9ff10419 2020-03-18 stsp 		if (strstr(sp[1], "^{}"))
492 93658fb9 2020-03-18 stsp 			continue;
493 9ff10419 2020-03-18 stsp 		if (fetchbranch && !got_match_branch(sp[1], fetchbranch))
494 93658fb9 2020-03-18 stsp 			continue;
495 9ff10419 2020-03-18 stsp 		if (refsz == nref + 1){
496 93658fb9 2020-03-18 stsp 			refsz *= 2;
497 93658fb9 2020-03-18 stsp 			have = realloc(have, refsz * sizeof(have[0]));
498 9ff10419 2020-03-18 stsp 			if (have == NULL) {
499 9ff10419 2020-03-18 stsp 				err = got_error_from_errno("realloc");
500 9ff10419 2020-03-18 stsp 				goto done;
501 9ff10419 2020-03-18 stsp 			}
502 93658fb9 2020-03-18 stsp 			want = realloc(want, refsz * sizeof(want[0]));
503 9ff10419 2020-03-18 stsp 			if (want == NULL) {
504 9ff10419 2020-03-18 stsp 				err = got_error_from_errno("realloc");
505 9ff10419 2020-03-18 stsp 				goto done;
506 9ff10419 2020-03-18 stsp 			}
507 93658fb9 2020-03-18 stsp 		}
508 9ff10419 2020-03-18 stsp 		if (!got_parse_sha1_digest(want[nref].sha1, sp[0])) {
509 9ff10419 2020-03-18 stsp 			err = got_error(GOT_ERR_BAD_OBJ_ID_STR);
510 9ff10419 2020-03-18 stsp 			goto done;
511 9ff10419 2020-03-18 stsp 		}
512 9ff10419 2020-03-18 stsp 
513 93658fb9 2020-03-18 stsp 		if (got_resolve_remote_ref(&have[nref], sp[1]) == -1)
514 93658fb9 2020-03-18 stsp 			memset(&have[nref], 0, sizeof(have[nref]));
515 8f2d01a6 2020-03-18 stsp 		err = got_privsep_send_fetch_progress(ibuf, &want[nref], sp[1]);
516 8f2d01a6 2020-03-18 stsp 		if (err)
517 8f2d01a6 2020-03-18 stsp 			goto done;
518 93658fb9 2020-03-18 stsp 		if (chattygit)
519 93658fb9 2020-03-18 stsp 			fprintf(stderr, "remote %s\n", sp[1]);
520 93658fb9 2020-03-18 stsp 		nref++;
521 93658fb9 2020-03-18 stsp 	}
522 93658fb9 2020-03-18 stsp 
523 93658fb9 2020-03-18 stsp 	req = 0;
524 9ff10419 2020-03-18 stsp 	for (i = 0; i < nref; i++){
525 93658fb9 2020-03-18 stsp 		if (got_object_id_cmp(&have[i], &want[i]) == 0)
526 93658fb9 2020-03-18 stsp 			continue;
527 93658fb9 2020-03-18 stsp 		if (got_has_object(&want[i]))
528 93658fb9 2020-03-18 stsp 			continue;
529 93658fb9 2020-03-18 stsp 		got_sha1_digest_to_str(want[i].sha1, hashstr, sizeof(hashstr));
530 13ce8c93 2020-03-18 stsp 		n = snprintf(buf, sizeof(buf), "want %s%s%s\n", hashstr,
531 13ce8c93 2020-03-18 stsp 		   i == 0 && my_capabilities ? " " : "",
532 8a29a085 2020-03-18 stsp 		   i == 0 && my_capabilities ? my_capabilities : "");
533 9ff10419 2020-03-18 stsp 		if (n >= sizeof(buf)) {
534 9ff10419 2020-03-18 stsp 			err = got_error(GOT_ERR_NO_SPACE);
535 9ff10419 2020-03-18 stsp 			goto done;
536 9ff10419 2020-03-18 stsp 		}
537 9ff10419 2020-03-18 stsp 		if (writepkt(fd, buf, n) == -1) {
538 9ff10419 2020-03-18 stsp 			err = got_error_from_errno("writepkt");
539 9ff10419 2020-03-18 stsp 			goto done;
540 9ff10419 2020-03-18 stsp 		}
541 93658fb9 2020-03-18 stsp 		req = 1;
542 93658fb9 2020-03-18 stsp 	}
543 93658fb9 2020-03-18 stsp 	flushpkt(fd);
544 9ff10419 2020-03-18 stsp 	for (i = 0; i < nref; i++){
545 93658fb9 2020-03-18 stsp 		if (got_object_id_cmp(&have[i], &zhash) == 0)
546 93658fb9 2020-03-18 stsp 			continue;
547 93658fb9 2020-03-18 stsp 		got_sha1_digest_to_str(want[i].sha1, hashstr, sizeof(hashstr));
548 93658fb9 2020-03-18 stsp 		n = snprintf(buf, sizeof(buf), "have %s\n", hashstr);
549 9ff10419 2020-03-18 stsp 		if (n >= sizeof(buf)) {
550 9ff10419 2020-03-18 stsp 			err = got_error(GOT_ERR_NO_SPACE);
551 9ff10419 2020-03-18 stsp 			goto done;
552 9ff10419 2020-03-18 stsp 		}
553 9ff10419 2020-03-18 stsp 		if (writepkt(fd, buf, n + 1) == -1) {
554 9ff10419 2020-03-18 stsp 			err = got_error_from_errno("writepkt");
555 9ff10419 2020-03-18 stsp 			goto done;
556 9ff10419 2020-03-18 stsp 		}
557 93658fb9 2020-03-18 stsp 	}
558 9ff10419 2020-03-18 stsp 	if (!req){
559 93658fb9 2020-03-18 stsp 		fprintf(stderr, "up to date\n");
560 93658fb9 2020-03-18 stsp 		flushpkt(fd);
561 93658fb9 2020-03-18 stsp 	}
562 93658fb9 2020-03-18 stsp 	n = snprintf(buf, sizeof(buf), "done\n");
563 9ff10419 2020-03-18 stsp 	if (writepkt(fd, buf, n) == -1) {
564 9ff10419 2020-03-18 stsp 		err = got_error_from_errno("writepkt");
565 9ff10419 2020-03-18 stsp 		goto done;
566 9ff10419 2020-03-18 stsp 	}
567 9ff10419 2020-03-18 stsp 	if (!req)
568 93658fb9 2020-03-18 stsp 		return 0;
569 93658fb9 2020-03-18 stsp 
570 9ff10419 2020-03-18 stsp 	if ((n = readpkt(fd, buf, sizeof(buf))) == -1) {
571 9ff10419 2020-03-18 stsp 		err = got_error_from_errno("readpkt");
572 9ff10419 2020-03-18 stsp 		goto done;
573 9ff10419 2020-03-18 stsp 	}
574 93658fb9 2020-03-18 stsp 	buf[n] = 0;
575 93658fb9 2020-03-18 stsp 
576 8f2d01a6 2020-03-18 stsp 	if (chattygit)
577 8f2d01a6 2020-03-18 stsp 		fprintf(stderr, "fetching...\n");
578 93658fb9 2020-03-18 stsp 	packsz = 0;
579 9ff10419 2020-03-18 stsp 	while (1) {
580 9ff10419 2020-03-18 stsp 		ssize_t w;
581 93658fb9 2020-03-18 stsp 		n = readn(fd, buf, sizeof buf);
582 9ff10419 2020-03-18 stsp 		if (n == 0)
583 93658fb9 2020-03-18 stsp 			break;
584 9ff10419 2020-03-18 stsp 		if (n == -1) {
585 9ff10419 2020-03-18 stsp 			err = got_error_from_errno("readn");
586 9ff10419 2020-03-18 stsp 			goto done;
587 9ff10419 2020-03-18 stsp 		}
588 9ff10419 2020-03-18 stsp 		w = write(packfd, buf, n);
589 9ff10419 2020-03-18 stsp 		if (w == -1) {
590 9ff10419 2020-03-18 stsp 			err = got_error_from_errno("write");
591 9ff10419 2020-03-18 stsp 			goto done;
592 9ff10419 2020-03-18 stsp 		}
593 9ff10419 2020-03-18 stsp 		if (w != n) {
594 9ff10419 2020-03-18 stsp 			err = got_error(GOT_ERR_IO);
595 9ff10419 2020-03-18 stsp 			goto done;
596 9ff10419 2020-03-18 stsp 		}
597 93658fb9 2020-03-18 stsp 		packsz += n;
598 93658fb9 2020-03-18 stsp 	}
599 9ff10419 2020-03-18 stsp 	if (lseek(packfd, 0, SEEK_SET) == -1) {
600 9ff10419 2020-03-18 stsp 		err = got_error_from_errno("lseek");
601 9ff10419 2020-03-18 stsp 		goto done;
602 9ff10419 2020-03-18 stsp 	}
603 9ff10419 2020-03-18 stsp 	if (got_check_pack_hash(packfd, packsz, packid->sha1) == -1)
604 9ff10419 2020-03-18 stsp 		err = got_error(GOT_ERR_BAD_PACKFILE);
605 9ff10419 2020-03-18 stsp done:
606 abe0f35f 2020-03-18 stsp 	TAILQ_FOREACH(pe, &symrefs, entry) {
607 abe0f35f 2020-03-18 stsp 		free((void *)pe->path);
608 abe0f35f 2020-03-18 stsp 		free(pe->data);
609 abe0f35f 2020-03-18 stsp 	}
610 abe0f35f 2020-03-18 stsp 	got_pathlist_free(&symrefs);
611 9ff10419 2020-03-18 stsp 	free(have);
612 9ff10419 2020-03-18 stsp 	free(want);
613 8f2d01a6 2020-03-18 stsp 	return err;
614 93658fb9 2020-03-18 stsp }
615 93658fb9 2020-03-18 stsp 
616 93658fb9 2020-03-18 stsp 
617 93658fb9 2020-03-18 stsp int
618 93658fb9 2020-03-18 stsp main(int argc, char **argv)
619 93658fb9 2020-03-18 stsp {
620 93658fb9 2020-03-18 stsp 	const struct got_error *err = NULL;
621 9ff10419 2020-03-18 stsp 	int fetchfd, packfd = -1;
622 93658fb9 2020-03-18 stsp 	struct got_object_id packid;
623 93658fb9 2020-03-18 stsp 	struct imsgbuf ibuf;
624 93658fb9 2020-03-18 stsp 	struct imsg imsg;
625 93658fb9 2020-03-18 stsp 
626 93658fb9 2020-03-18 stsp 	if(getenv("GOT_DEBUG") != NULL){
627 93658fb9 2020-03-18 stsp 		fprintf(stderr, "fetch-pack being chatty!\n");
628 93658fb9 2020-03-18 stsp 		chattygit = 1;
629 93658fb9 2020-03-18 stsp 	}
630 93658fb9 2020-03-18 stsp 
631 93658fb9 2020-03-18 stsp 	imsg_init(&ibuf, GOT_IMSG_FD_CHILD);
632 93658fb9 2020-03-18 stsp 	if((err = got_privsep_recv_imsg(&imsg, &ibuf, 0)) != 0) {
633 93658fb9 2020-03-18 stsp 		if (err->code == GOT_ERR_PRIVSEP_PIPE)
634 93658fb9 2020-03-18 stsp 			err = NULL;
635 93658fb9 2020-03-18 stsp 		goto done;
636 93658fb9 2020-03-18 stsp 	}
637 93658fb9 2020-03-18 stsp 	if (imsg.hdr.type == GOT_IMSG_STOP)
638 93658fb9 2020-03-18 stsp 		goto done;
639 93658fb9 2020-03-18 stsp 	if (imsg.hdr.type != GOT_IMSG_FETCH_REQUEST) {
640 93658fb9 2020-03-18 stsp 		err = got_error(GOT_ERR_PRIVSEP_MSG);
641 93658fb9 2020-03-18 stsp 		goto done;
642 93658fb9 2020-03-18 stsp 	}
643 93658fb9 2020-03-18 stsp 	if (imsg.hdr.len - IMSG_HEADER_SIZE != 0) {
644 93658fb9 2020-03-18 stsp 		err = got_error(GOT_ERR_PRIVSEP_LEN);
645 93658fb9 2020-03-18 stsp 		goto done;
646 93658fb9 2020-03-18 stsp 	}
647 93658fb9 2020-03-18 stsp 	fetchfd = imsg.fd;
648 93658fb9 2020-03-18 stsp 
649 93658fb9 2020-03-18 stsp 	if((err = got_privsep_recv_imsg(&imsg, &ibuf, 0)) != 0) {
650 93658fb9 2020-03-18 stsp 		if (err->code == GOT_ERR_PRIVSEP_PIPE)
651 93658fb9 2020-03-18 stsp 			err = NULL;
652 93658fb9 2020-03-18 stsp 		goto done;
653 93658fb9 2020-03-18 stsp 	}
654 93658fb9 2020-03-18 stsp 	if (imsg.hdr.type == GOT_IMSG_STOP)
655 93658fb9 2020-03-18 stsp 		goto done;
656 93658fb9 2020-03-18 stsp 	if (imsg.hdr.type != GOT_IMSG_TMPFD) {
657 93658fb9 2020-03-18 stsp 		err = got_error(GOT_ERR_PRIVSEP_MSG);
658 93658fb9 2020-03-18 stsp 		goto done;
659 93658fb9 2020-03-18 stsp 	}
660 93658fb9 2020-03-18 stsp 	if (imsg.hdr.len - IMSG_HEADER_SIZE != 0) {
661 93658fb9 2020-03-18 stsp 		err = got_error(GOT_ERR_PRIVSEP_LEN);
662 93658fb9 2020-03-18 stsp 		goto done;
663 93658fb9 2020-03-18 stsp 	}
664 93658fb9 2020-03-18 stsp 	packfd = imsg.fd;
665 93658fb9 2020-03-18 stsp 
666 8f2d01a6 2020-03-18 stsp 	err = fetch_pack(fetchfd, packfd, &packid, &ibuf);
667 9ff10419 2020-03-18 stsp 	if (err)
668 93658fb9 2020-03-18 stsp 		goto done;
669 93658fb9 2020-03-18 stsp done:
670 9ff10419 2020-03-18 stsp 	if (packfd != -1 && close(packfd) == -1 && err == NULL)
671 9ff10419 2020-03-18 stsp 		err = got_error_from_errno("close");
672 9ff10419 2020-03-18 stsp 	if (err != NULL)
673 93658fb9 2020-03-18 stsp 		got_privsep_send_error(&ibuf, err);
674 93658fb9 2020-03-18 stsp 	else
675 93658fb9 2020-03-18 stsp 		err = got_privsep_send_fetch_done(&ibuf, packid);
676 93658fb9 2020-03-18 stsp 	if(err != NULL) {
677 93658fb9 2020-03-18 stsp 		fprintf(stderr, "%s: %s\n", getprogname(), err->msg);
678 93658fb9 2020-03-18 stsp 		got_privsep_send_error(&ibuf, err);
679 93658fb9 2020-03-18 stsp 	}
680 93658fb9 2020-03-18 stsp 
681 93658fb9 2020-03-18 stsp 	exit(0);
682 93658fb9 2020-03-18 stsp }