1 93658fb9 2020-03-18 stsp /*
  2 93658fb9 2020-03-18 stsp  * Copyright (c) 2018, 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/stat.h>
 19 93658fb9 2020-03-18 stsp #include <sys/queue.h>
 20 93658fb9 2020-03-18 stsp #include <sys/uio.h>
 21 93658fb9 2020-03-18 stsp #include <sys/socket.h>
 22 93658fb9 2020-03-18 stsp #include <sys/wait.h>
 23 93658fb9 2020-03-18 stsp #include <sys/syslimits.h>
 24 93658fb9 2020-03-18 stsp #include <sys/resource.h>
 25 93658fb9 2020-03-18 stsp #include <sys/socket.h>
 26 93658fb9 2020-03-18 stsp 
 27 93658fb9 2020-03-18 stsp #include <errno.h>
 28 5cc27ede 2020-03-18 stsp #include <err.h>
 29 93658fb9 2020-03-18 stsp #include <fcntl.h>
 30 93658fb9 2020-03-18 stsp #include <stdio.h>
 31 93658fb9 2020-03-18 stsp #include <stdlib.h>
 32 93658fb9 2020-03-18 stsp #include <string.h>
 33 93658fb9 2020-03-18 stsp #include <stdint.h>
 34 93658fb9 2020-03-18 stsp #include <sha1.h>
 35 93658fb9 2020-03-18 stsp #include <zlib.h>
 36 93658fb9 2020-03-18 stsp #include <ctype.h>
 37 93658fb9 2020-03-18 stsp #include <limits.h>
 38 93658fb9 2020-03-18 stsp #include <imsg.h>
 39 93658fb9 2020-03-18 stsp #include <time.h>
 40 93658fb9 2020-03-18 stsp #include <uuid.h>
 41 93658fb9 2020-03-18 stsp #include <netdb.h>
 42 93658fb9 2020-03-18 stsp #include <netinet/in.h>
 43 93658fb9 2020-03-18 stsp 
 44 93658fb9 2020-03-18 stsp #include "got_error.h"
 45 93658fb9 2020-03-18 stsp #include "got_reference.h"
 46 93658fb9 2020-03-18 stsp #include "got_repository.h"
 47 93658fb9 2020-03-18 stsp #include "got_path.h"
 48 93658fb9 2020-03-18 stsp #include "got_cancel.h"
 49 93658fb9 2020-03-18 stsp #include "got_worktree.h"
 50 93658fb9 2020-03-18 stsp #include "got_object.h"
 51 fe4e1501 2020-03-18 stsp #include "got_opentemp.h"
 52 82ebf666 2020-03-18 stsp #include "got_fetch.h"
 53 93658fb9 2020-03-18 stsp 
 54 93658fb9 2020-03-18 stsp #include "got_lib_delta.h"
 55 93658fb9 2020-03-18 stsp #include "got_lib_inflate.h"
 56 93658fb9 2020-03-18 stsp #include "got_lib_object.h"
 57 93658fb9 2020-03-18 stsp #include "got_lib_object_parse.h"
 58 93658fb9 2020-03-18 stsp #include "got_lib_object_create.h"
 59 93658fb9 2020-03-18 stsp #include "got_lib_pack.h"
 60 93658fb9 2020-03-18 stsp #include "got_lib_sha1.h"
 61 93658fb9 2020-03-18 stsp #include "got_lib_privsep.h"
 62 93658fb9 2020-03-18 stsp #include "got_lib_object_cache.h"
 63 93658fb9 2020-03-18 stsp #include "got_lib_repository.h"
 64 93658fb9 2020-03-18 stsp 
 65 93658fb9 2020-03-18 stsp #define GOT_PROTOMAX	64
 66 93658fb9 2020-03-18 stsp #define GOT_HOSTMAX	256
 67 93658fb9 2020-03-18 stsp #define GOT_PATHMAX	512
 68 93658fb9 2020-03-18 stsp #define GOT_REPOMAX	256
 69 93658fb9 2020-03-18 stsp #define GOT_PORTMAX	16
 70 93658fb9 2020-03-18 stsp #define GOT_URIMAX	1024
 71 93658fb9 2020-03-18 stsp 
 72 93658fb9 2020-03-18 stsp static int
 73 93658fb9 2020-03-18 stsp hassuffix(char *base, char *suf)
 74 93658fb9 2020-03-18 stsp {
 75 93658fb9 2020-03-18 stsp 	int nb, ns;
 76 93658fb9 2020-03-18 stsp 
 77 93658fb9 2020-03-18 stsp 	nb = strlen(base);
 78 93658fb9 2020-03-18 stsp 	ns = strlen(suf);
 79 93658fb9 2020-03-18 stsp 	if (ns <= nb && strcmp(base + (nb - ns), suf) == 0)
 80 93658fb9 2020-03-18 stsp 		return 1;
 81 93658fb9 2020-03-18 stsp 	return 0;
 82 93658fb9 2020-03-18 stsp }
 83 93658fb9 2020-03-18 stsp 
 84 5cc27ede 2020-03-18 stsp static const struct got_error *
 85 09838ffc 2020-03-18 stsp dial_ssh(int *fetchfd, const char *host, const char *port, const char *path,
 86 09838ffc 2020-03-18 stsp     const char *direction)
 87 93658fb9 2020-03-18 stsp {
 88 5cc27ede 2020-03-18 stsp 	const struct got_error *error = NULL;
 89 93658fb9 2020-03-18 stsp 	int pid, pfd[2];
 90 93658fb9 2020-03-18 stsp 	char cmd[64];
 91 93658fb9 2020-03-18 stsp 
 92 5cc27ede 2020-03-18 stsp 	*fetchfd = -1;
 93 5cc27ede 2020-03-18 stsp 
 94 93658fb9 2020-03-18 stsp 	if (pipe(pfd) == -1)
 95 5cc27ede 2020-03-18 stsp 		return got_error_from_errno("pipe");
 96 5cc27ede 2020-03-18 stsp 
 97 93658fb9 2020-03-18 stsp 	pid = fork();
 98 5cc27ede 2020-03-18 stsp 	if (pid == -1) {
 99 5cc27ede 2020-03-18 stsp 		error = got_error_from_errno("fork");
100 5cc27ede 2020-03-18 stsp 		close(pfd[0]);
101 93658fb9 2020-03-18 stsp 		close(pfd[1]);
102 5cc27ede 2020-03-18 stsp 		return error;
103 5cc27ede 2020-03-18 stsp 	} else if (pid == 0) {
104 5cc27ede 2020-03-18 stsp 		int n;
105 5cc27ede 2020-03-18 stsp 		close(pfd[1]);
106 93658fb9 2020-03-18 stsp 		dup2(pfd[0], 0);
107 93658fb9 2020-03-18 stsp 		dup2(pfd[0], 1);
108 5cc27ede 2020-03-18 stsp 		n = snprintf(cmd, sizeof(cmd), "git-%s-pack", direction);
109 5cc27ede 2020-03-18 stsp 		if (n < 0 || n >= sizeof(cmd))
110 5cc27ede 2020-03-18 stsp 			err(1, "snprintf");
111 ee448f5f 2020-03-18 stsp 		if (execl(GOT_FETCH_PATH_SSH, GOT_FETCH_PATH_SSH,
112 ee448f5f 2020-03-18 stsp 		    host, cmd, path, NULL) == -1)
113 ee448f5f 2020-03-18 stsp 			err(1, "execl");
114 5cc27ede 2020-03-18 stsp 		abort(); /* not reached */
115 5cc27ede 2020-03-18 stsp 	} else {
116 93658fb9 2020-03-18 stsp 		close(pfd[0]);
117 5cc27ede 2020-03-18 stsp 		*fetchfd = pfd[1];
118 5cc27ede 2020-03-18 stsp 		return NULL;
119 93658fb9 2020-03-18 stsp 	}
120 93658fb9 2020-03-18 stsp }
121 93658fb9 2020-03-18 stsp 
122 5cc27ede 2020-03-18 stsp static const struct got_error *
123 09838ffc 2020-03-18 stsp dial_git(int *fetchfd, const char *host, const char *port, const char *path,
124 09838ffc 2020-03-18 stsp     const char *direction)
125 93658fb9 2020-03-18 stsp {
126 5cc27ede 2020-03-18 stsp 	const struct got_error *err = NULL;
127 93658fb9 2020-03-18 stsp 	struct addrinfo hints, *servinfo, *p;
128 5cc27ede 2020-03-18 stsp 	char *cmd = NULL, *pkt = NULL;
129 4312a498 2020-03-18 stsp 	int fd = -1, totlen, r, eaicode;
130 5cc27ede 2020-03-18 stsp 
131 5cc27ede 2020-03-18 stsp 	*fetchfd = -1;
132 93658fb9 2020-03-18 stsp 
133 93658fb9 2020-03-18 stsp 	memset(&hints, 0, sizeof hints);
134 93658fb9 2020-03-18 stsp 	hints.ai_family = AF_UNSPEC;
135 93658fb9 2020-03-18 stsp 	hints.ai_socktype = SOCK_STREAM;
136 5cc27ede 2020-03-18 stsp 	eaicode = getaddrinfo(host, port, &hints, &servinfo);
137 a117fd10 2020-03-18 stsp 	if (eaicode) {
138 a117fd10 2020-03-18 stsp 		char msg[512];
139 a117fd10 2020-03-18 stsp 		snprintf(msg, sizeof(msg), "%s: %s", host,
140 a117fd10 2020-03-18 stsp 		    gai_strerror(eaicode));
141 a117fd10 2020-03-18 stsp 		return got_error_msg(GOT_ERR_ADDRINFO, msg);
142 a117fd10 2020-03-18 stsp 	}
143 93658fb9 2020-03-18 stsp 
144 93658fb9 2020-03-18 stsp 	for (p = servinfo; p != NULL; p = p->ai_next) {
145 93658fb9 2020-03-18 stsp 		if ((fd = socket(p->ai_family, p->ai_socktype,
146 93658fb9 2020-03-18 stsp 		    p->ai_protocol)) == -1)
147 93658fb9 2020-03-18 stsp 			continue;
148 93658fb9 2020-03-18 stsp 		if (connect(fd, p->ai_addr, p->ai_addrlen) == 0)
149 93658fb9 2020-03-18 stsp 			break;
150 5cc27ede 2020-03-18 stsp 		err = got_error_from_errno("connect");
151 93658fb9 2020-03-18 stsp 		close(fd);
152 93658fb9 2020-03-18 stsp 	}
153 93658fb9 2020-03-18 stsp 	if (p == NULL)
154 5cc27ede 2020-03-18 stsp 		goto done;
155 93658fb9 2020-03-18 stsp 
156 4312a498 2020-03-18 stsp 	if (asprintf(&cmd, "git-%s-pack %s", direction, path) == -1) {
157 5cc27ede 2020-03-18 stsp 		err = got_error_from_errno("asprintf");
158 5cc27ede 2020-03-18 stsp 		goto done;
159 5cc27ede 2020-03-18 stsp 	}
160 4312a498 2020-03-18 stsp 	totlen = 4 + strlen(cmd) + 1 + strlen("host=") + strlen(host) + 1;
161 4312a498 2020-03-18 stsp 	if (asprintf(&pkt, "%04x%s", totlen, cmd) == -1) {
162 5cc27ede 2020-03-18 stsp 		err = got_error_from_errno("asprintf");
163 5cc27ede 2020-03-18 stsp 		goto done;
164 5cc27ede 2020-03-18 stsp 	}
165 4312a498 2020-03-18 stsp 	r = write(fd, pkt, strlen(pkt) + 1);
166 4312a498 2020-03-18 stsp 	if (r == -1) {
167 4312a498 2020-03-18 stsp 		err = got_error_from_errno("write");
168 4312a498 2020-03-18 stsp 		goto done;
169 4312a498 2020-03-18 stsp 	}
170 4312a498 2020-03-18 stsp 	if (asprintf(&pkt, "host=%s", host) == -1) {
171 4312a498 2020-03-18 stsp 		err = got_error_from_errno("asprintf");
172 4312a498 2020-03-18 stsp 		goto done;
173 4312a498 2020-03-18 stsp 	}
174 4312a498 2020-03-18 stsp 	r = write(fd, pkt, strlen(pkt) + 1);
175 4312a498 2020-03-18 stsp 	if (r == -1) {
176 5cc27ede 2020-03-18 stsp 		err = got_error_from_errno("write");
177 4312a498 2020-03-18 stsp 		goto done;
178 4312a498 2020-03-18 stsp 	}
179 5cc27ede 2020-03-18 stsp done:
180 93658fb9 2020-03-18 stsp 	free(cmd);
181 93658fb9 2020-03-18 stsp 	free(pkt);
182 5cc27ede 2020-03-18 stsp 	if (err) {
183 5cc27ede 2020-03-18 stsp 		if (fd != -1)
184 5cc27ede 2020-03-18 stsp 			close(fd);
185 5cc27ede 2020-03-18 stsp 	} else
186 5cc27ede 2020-03-18 stsp 		*fetchfd = fd;
187 20eb36d0 2020-03-18 stsp 	return err;
188 20eb36d0 2020-03-18 stsp }
189 20eb36d0 2020-03-18 stsp 
190 20eb36d0 2020-03-18 stsp const struct got_error *
191 20eb36d0 2020-03-18 stsp got_fetch_connect(int *fetchfd, const char *proto, const char *host,
192 20eb36d0 2020-03-18 stsp     const char *port, const char *server_path)
193 20eb36d0 2020-03-18 stsp {
194 20eb36d0 2020-03-18 stsp 	const struct got_error *err = NULL;
195 20eb36d0 2020-03-18 stsp 
196 20eb36d0 2020-03-18 stsp 	*fetchfd = -1;
197 20eb36d0 2020-03-18 stsp 
198 20eb36d0 2020-03-18 stsp 	if (strcmp(proto, "ssh") == 0 || strcmp(proto, "git+ssh") == 0)
199 20eb36d0 2020-03-18 stsp 		err = dial_ssh(fetchfd, host, port, server_path, "upload");
200 20eb36d0 2020-03-18 stsp 	else if (strcmp(proto, "git") == 0)
201 20eb36d0 2020-03-18 stsp 		err = dial_git(fetchfd, host, port, server_path, "upload");
202 20eb36d0 2020-03-18 stsp 	else if (strcmp(proto, "http") == 0 || strcmp(proto, "git+http") == 0)
203 20eb36d0 2020-03-18 stsp 		err = got_error_path(proto, GOT_ERR_NOT_IMPL);
204 20eb36d0 2020-03-18 stsp 	else
205 20eb36d0 2020-03-18 stsp 		err = got_error_path(proto, GOT_ERR_BAD_PROTO);
206 5cc27ede 2020-03-18 stsp 	return err;
207 93658fb9 2020-03-18 stsp }
208 93658fb9 2020-03-18 stsp 
209 82ebf666 2020-03-18 stsp const struct got_error *
210 82ebf666 2020-03-18 stsp got_fetch_parse_uri(char **proto, char **host, char **port,
211 82ebf666 2020-03-18 stsp     char **server_path, char **repo_name, const char *uri)
212 93658fb9 2020-03-18 stsp {
213 82ebf666 2020-03-18 stsp 	const struct got_error *err = NULL;
214 93658fb9 2020-03-18 stsp 	char *s, *p, *q;
215 93658fb9 2020-03-18 stsp 	int n, hasport;
216 93658fb9 2020-03-18 stsp 
217 82ebf666 2020-03-18 stsp 	*proto = *host = *port = *server_path = *repo_name = NULL;
218 82ebf666 2020-03-18 stsp 
219 93658fb9 2020-03-18 stsp 	p = strstr(uri, "://");
220 93658fb9 2020-03-18 stsp 	if (!p) {
221 82ebf666 2020-03-18 stsp 		return got_error(GOT_ERR_PARSE_URI);
222 93658fb9 2020-03-18 stsp 	}
223 82ebf666 2020-03-18 stsp 	*proto = strndup(uri, p - uri);
224 82ebf666 2020-03-18 stsp 	if (proto == NULL) {
225 82ebf666 2020-03-18 stsp 		err = got_error_from_errno("strndup");
226 82ebf666 2020-03-18 stsp 		goto done;
227 82ebf666 2020-03-18 stsp 	}
228 82ebf666 2020-03-18 stsp 
229 82ebf666 2020-03-18 stsp 	hasport = (strcmp(*proto, "git") == 0 ||
230 82ebf666 2020-03-18 stsp 	    strstr(*proto, "http") == *proto);
231 93658fb9 2020-03-18 stsp 	s = p + 3;
232 93658fb9 2020-03-18 stsp 	p = NULL;
233 93658fb9 2020-03-18 stsp 	if (!hasport) {
234 93658fb9 2020-03-18 stsp 		p = strstr(s, ":");
235 93658fb9 2020-03-18 stsp 		if (p != NULL)
236 93658fb9 2020-03-18 stsp 			p++;
237 93658fb9 2020-03-18 stsp 	}
238 93658fb9 2020-03-18 stsp 	if (p == NULL)
239 93658fb9 2020-03-18 stsp 		p = strstr(s, "/");
240 93658fb9 2020-03-18 stsp 	if (p == NULL || strlen(p) == 1) {
241 82ebf666 2020-03-18 stsp 		err = got_error(GOT_ERR_PARSE_URI);
242 82ebf666 2020-03-18 stsp 		goto done;
243 93658fb9 2020-03-18 stsp 	}
244 93658fb9 2020-03-18 stsp 
245 93658fb9 2020-03-18 stsp 	q = memchr(s, ':', p - s);
246 93658fb9 2020-03-18 stsp 	if (q) {
247 82ebf666 2020-03-18 stsp 		*host = strndup(s, q - s);
248 82ebf666 2020-03-18 stsp 		if (*host == NULL) {
249 82ebf666 2020-03-18 stsp 			err = got_error_from_errno("strndup");
250 82ebf666 2020-03-18 stsp 			goto done;
251 82ebf666 2020-03-18 stsp 		}
252 82ebf666 2020-03-18 stsp 		*port = strndup(q + 1, p - (q + 1));
253 82ebf666 2020-03-18 stsp 		if (*port == NULL) {
254 82ebf666 2020-03-18 stsp 			err = got_error_from_errno("strndup");
255 82ebf666 2020-03-18 stsp 			goto done;
256 82ebf666 2020-03-18 stsp 		}
257 82ebf666 2020-03-18 stsp 	} else {
258 82ebf666 2020-03-18 stsp 		*host = strndup(s, p - s);
259 82ebf666 2020-03-18 stsp 		if (*host == NULL) {
260 82ebf666 2020-03-18 stsp 			err = got_error_from_errno("strndup");
261 82ebf666 2020-03-18 stsp 			goto done;
262 82ebf666 2020-03-18 stsp 		}
263 82ebf666 2020-03-18 stsp 		if (asprintf(port, "%u", GOT_DEFAULT_GIT_PORT) == -1) {
264 82ebf666 2020-03-18 stsp 			err = got_error_from_errno("asprintf");
265 82ebf666 2020-03-18 stsp 			goto done;
266 82ebf666 2020-03-18 stsp 		}
267 93658fb9 2020-03-18 stsp 	}
268 93658fb9 2020-03-18 stsp 
269 82ebf666 2020-03-18 stsp 	*server_path = strdup(p);
270 82ebf666 2020-03-18 stsp 	if (*server_path == NULL) {
271 82ebf666 2020-03-18 stsp 		err = got_error_from_errno("strdup");
272 82ebf666 2020-03-18 stsp 		goto done;
273 82ebf666 2020-03-18 stsp 	}
274 82ebf666 2020-03-18 stsp 
275 93658fb9 2020-03-18 stsp 	p = strrchr(p, '/') + 1;
276 93658fb9 2020-03-18 stsp 	if (!p || strlen(p) == 0) {
277 93658fb9 2020-03-18 stsp 		//werrstr("missing repository in uri");
278 82ebf666 2020-03-18 stsp 		err = got_error(GOT_ERR_PARSE_URI);
279 82ebf666 2020-03-18 stsp 		goto done;
280 93658fb9 2020-03-18 stsp 	}
281 93658fb9 2020-03-18 stsp 	n = strlen(p);
282 93658fb9 2020-03-18 stsp 	if (hassuffix(p, ".git"))
283 93658fb9 2020-03-18 stsp 		n -= 4;
284 82ebf666 2020-03-18 stsp 	*repo_name = strndup(p, (p + n) - p);
285 82ebf666 2020-03-18 stsp 	if (*repo_name == NULL) {
286 82ebf666 2020-03-18 stsp 		err = got_error_from_errno("strndup");
287 82ebf666 2020-03-18 stsp 		goto done;
288 82ebf666 2020-03-18 stsp 	}
289 82ebf666 2020-03-18 stsp done:
290 82ebf666 2020-03-18 stsp 	if (err) {
291 82ebf666 2020-03-18 stsp 		free(*proto);
292 82ebf666 2020-03-18 stsp 		*proto = NULL;
293 82ebf666 2020-03-18 stsp 		free(*host);
294 82ebf666 2020-03-18 stsp 		*host = NULL;
295 82ebf666 2020-03-18 stsp 		free(*port);
296 82ebf666 2020-03-18 stsp 		*port = NULL;
297 82ebf666 2020-03-18 stsp 		free(*server_path);
298 82ebf666 2020-03-18 stsp 		*server_path = NULL;
299 82ebf666 2020-03-18 stsp 		free(*repo_name);
300 82ebf666 2020-03-18 stsp 		*repo_name = NULL;
301 82ebf666 2020-03-18 stsp 	}
302 82ebf666 2020-03-18 stsp 	return err;
303 849f7557 2020-03-18 stsp }
304 849f7557 2020-03-18 stsp 
305 849f7557 2020-03-18 stsp static const struct got_error *
306 849f7557 2020-03-18 stsp check_pack_hash(int fd, size_t sz, uint8_t *hcomp)
307 849f7557 2020-03-18 stsp {
308 849f7557 2020-03-18 stsp 	SHA1_CTX ctx;
309 849f7557 2020-03-18 stsp 	uint8_t hexpect[SHA1_DIGEST_LENGTH];
310 849f7557 2020-03-18 stsp 	uint8_t buf[32 * 1024];
311 849f7557 2020-03-18 stsp 	ssize_t n, r, nr;
312 849f7557 2020-03-18 stsp 
313 849f7557 2020-03-18 stsp 	if (sz < sizeof(struct got_packfile_hdr) + SHA1_DIGEST_LENGTH)
314 849f7557 2020-03-18 stsp 		return got_error_msg(GOT_ERR_BAD_PACKFILE, "short packfile");
315 849f7557 2020-03-18 stsp 
316 849f7557 2020-03-18 stsp 	n = 0;
317 849f7557 2020-03-18 stsp 	SHA1Init(&ctx);
318 849f7557 2020-03-18 stsp 	while (n < sz - 20) {
319 849f7557 2020-03-18 stsp 		nr = sizeof(buf);
320 849f7557 2020-03-18 stsp 		if (sz - n - 20 < sizeof(buf))
321 849f7557 2020-03-18 stsp 			nr = sz - n - 20;
322 849f7557 2020-03-18 stsp 		r = read(fd, buf, nr);
323 849f7557 2020-03-18 stsp 		if (r == -1)
324 849f7557 2020-03-18 stsp 			return got_error_from_errno("read");
325 849f7557 2020-03-18 stsp 		if (r != nr)
326 849f7557 2020-03-18 stsp 			return got_error_msg(GOT_ERR_BAD_PACKFILE,
327 849f7557 2020-03-18 stsp 			    "short pack file");
328 849f7557 2020-03-18 stsp 		SHA1Update(&ctx, buf, nr);
329 849f7557 2020-03-18 stsp 		n += r;
330 849f7557 2020-03-18 stsp 	}
331 849f7557 2020-03-18 stsp 	SHA1Final(hcomp, &ctx);
332 849f7557 2020-03-18 stsp 
333 849f7557 2020-03-18 stsp 	r = read(fd, hexpect, sizeof(hexpect));
334 849f7557 2020-03-18 stsp 	if (r == -1)
335 849f7557 2020-03-18 stsp 		return got_error_from_errno("read");
336 849f7557 2020-03-18 stsp 	if (r != sizeof(hexpect))
337 849f7557 2020-03-18 stsp 		return got_error_msg(GOT_ERR_BAD_PACKFILE,
338 849f7557 2020-03-18 stsp 		    "short pack file");
339 849f7557 2020-03-18 stsp 
340 849f7557 2020-03-18 stsp 	if (memcmp(hcomp, hexpect, SHA1_DIGEST_LENGTH) != 0)
341 849f7557 2020-03-18 stsp 		return got_error_msg(GOT_ERR_BAD_PACKFILE,
342 849f7557 2020-03-18 stsp 		    "packfile checksum mismatch");
343 849f7557 2020-03-18 stsp 
344 849f7557 2020-03-18 stsp 	return NULL;
345 93658fb9 2020-03-18 stsp }
346 93658fb9 2020-03-18 stsp 
347 93658fb9 2020-03-18 stsp const struct got_error*
348 07e52fce 2020-03-18 stsp got_fetch_pack(struct got_object_id **pack_hash, struct got_pathlist_head *refs,
349 531c3985 2020-03-18 stsp     struct got_pathlist_head *symrefs, int fetchfd, struct got_repository *repo,
350 531c3985 2020-03-18 stsp     got_fetch_progress_cb progress_cb, void *progress_arg)
351 93658fb9 2020-03-18 stsp {
352 20eb36d0 2020-03-18 stsp 	int imsg_fetchfds[2], imsg_idxfds[2];
353 20eb36d0 2020-03-18 stsp 	int packfd = -1, npackfd = -1, idxfd = -1, nidxfd = -1, nfetchfd = -1;
354 4788f1ce 2020-03-18 stsp 	int tmpfd = -1;
355 85e8591f 2020-03-18 stsp 	int fetchstatus, idxstatus, done = 0;
356 93658fb9 2020-03-18 stsp 	const struct got_error *err;
357 85e8591f 2020-03-18 stsp 	struct imsgbuf fetchibuf, idxibuf;
358 85e8591f 2020-03-18 stsp 	pid_t fetchpid, idxpid;
359 bb64b798 2020-03-18 stsp 	char *tmppackpath = NULL, *tmpidxpath = NULL;
360 afa77e03 2020-03-18 stsp 	char *packpath = NULL, *idxpath = NULL, *id_str = NULL;
361 bb64b798 2020-03-18 stsp 	const char *repo_path = got_repo_get_path(repo);
362 33501562 2020-03-18 stsp 	struct got_pathlist_head have_refs;
363 abe0f35f 2020-03-18 stsp 	struct got_pathlist_entry *pe;
364 d2cdc636 2020-03-18 stsp 	off_t packfile_size = 0;
365 ee61b6d3 2020-03-18 stsp 	char *path;
366 abe0f35f 2020-03-18 stsp 
367 d9b4d0c0 2020-03-18 stsp 	*pack_hash = NULL;
368 93658fb9 2020-03-18 stsp 
369 33501562 2020-03-18 stsp 	TAILQ_INIT(&have_refs);
370 33501562 2020-03-18 stsp 
371 66cba96f 2020-03-18 stsp 	if (asprintf(&path, "%s/%s/fetching.pack",
372 66cba96f 2020-03-18 stsp 	    repo_path, GOT_OBJECTS_PACK_DIR) == -1) {
373 ee61b6d3 2020-03-18 stsp 		err = got_error_from_errno("asprintf");
374 ee61b6d3 2020-03-18 stsp 		goto done;
375 8e278d17 2020-03-18 stsp 	}
376 ee61b6d3 2020-03-18 stsp 	err = got_opentemp_named_fd(&tmppackpath, &packfd, path);
377 ee61b6d3 2020-03-18 stsp 	free(path);
378 fe4e1501 2020-03-18 stsp 	if (err)
379 8e278d17 2020-03-18 stsp 		goto done;
380 93658fb9 2020-03-18 stsp 	npackfd = dup(packfd);
381 8e278d17 2020-03-18 stsp 	if (npackfd == -1) {
382 8e278d17 2020-03-18 stsp 		err = got_error_from_errno("dup");
383 8e278d17 2020-03-18 stsp 		goto done;
384 8e278d17 2020-03-18 stsp 	}
385 66cba96f 2020-03-18 stsp 	if (asprintf(&path, "%s/%s/fetching.idx",
386 66cba96f 2020-03-18 stsp 	    repo_path, GOT_OBJECTS_PACK_DIR) == -1) {
387 ee61b6d3 2020-03-18 stsp 		err = got_error_from_errno("asprintf");
388 ee61b6d3 2020-03-18 stsp 		goto done;
389 ee61b6d3 2020-03-18 stsp 	}
390 ee61b6d3 2020-03-18 stsp 	err = got_opentemp_named_fd(&tmpidxpath, &idxfd, path);
391 ee61b6d3 2020-03-18 stsp 	free(path);
392 fe4e1501 2020-03-18 stsp 	if (err)
393 8e278d17 2020-03-18 stsp 		goto done;
394 93658fb9 2020-03-18 stsp 	nidxfd = dup(idxfd);
395 8e278d17 2020-03-18 stsp 	if (nidxfd == -1) {
396 8e278d17 2020-03-18 stsp 		err = got_error_from_errno("dup");
397 8e278d17 2020-03-18 stsp 		goto done;
398 8e278d17 2020-03-18 stsp 	}
399 93658fb9 2020-03-18 stsp 
400 4788f1ce 2020-03-18 stsp 	tmpfd = got_opentempfd();
401 4788f1ce 2020-03-18 stsp 	if (tmpfd == -1) {
402 4788f1ce 2020-03-18 stsp 		err = got_error_from_errno("got_opentempfd");
403 4788f1ce 2020-03-18 stsp 		goto done;
404 4788f1ce 2020-03-18 stsp 	}
405 4788f1ce 2020-03-18 stsp 
406 8e278d17 2020-03-18 stsp 	if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, imsg_fetchfds) == -1) {
407 8e278d17 2020-03-18 stsp 		err = got_error_from_errno("socketpair");
408 8e278d17 2020-03-18 stsp 		goto done;
409 8e278d17 2020-03-18 stsp 	}
410 93658fb9 2020-03-18 stsp 
411 85e8591f 2020-03-18 stsp 	fetchpid = fork();
412 85e8591f 2020-03-18 stsp 	if (fetchpid == -1) {
413 8e278d17 2020-03-18 stsp 		err = got_error_from_errno("fork");
414 8e278d17 2020-03-18 stsp 		goto done;
415 85e8591f 2020-03-18 stsp 	} else if (fetchpid == 0){
416 8e278d17 2020-03-18 stsp 		got_privsep_exec_child(imsg_fetchfds,
417 12491971 2020-03-18 stsp 		    GOT_PATH_PROG_FETCH_PACK, tmppackpath);
418 93658fb9 2020-03-18 stsp 	}
419 93658fb9 2020-03-18 stsp 
420 8e278d17 2020-03-18 stsp 	if (close(imsg_fetchfds[1]) != 0) {
421 8e278d17 2020-03-18 stsp 		err = got_error_from_errno("close");
422 8e278d17 2020-03-18 stsp 		goto done;
423 8e278d17 2020-03-18 stsp 	}
424 85e8591f 2020-03-18 stsp 	imsg_init(&fetchibuf, imsg_fetchfds[0]);
425 20eb36d0 2020-03-18 stsp 	nfetchfd = dup(fetchfd);
426 20eb36d0 2020-03-18 stsp 	if (nfetchfd == -1) {
427 20eb36d0 2020-03-18 stsp 		err = got_error_from_errno("dup");
428 20eb36d0 2020-03-18 stsp 		goto done;
429 20eb36d0 2020-03-18 stsp 	}
430 85e8591f 2020-03-18 stsp 	err = got_privsep_send_fetch_req(&fetchibuf, nfetchfd, &have_refs);
431 93658fb9 2020-03-18 stsp 	if (err != NULL)
432 8e278d17 2020-03-18 stsp 		goto done;
433 20eb36d0 2020-03-18 stsp 	nfetchfd = -1;
434 f826addf 2020-03-18 stsp 	err = got_privsep_send_fetch_outfd(&fetchibuf, npackfd);
435 93658fb9 2020-03-18 stsp 	if (err != NULL)
436 8e278d17 2020-03-18 stsp 		goto done;
437 93658fb9 2020-03-18 stsp 	npackfd = dup(packfd);
438 8e278d17 2020-03-18 stsp 	if (npackfd == -1) {
439 8e278d17 2020-03-18 stsp 		err = got_error_from_errno("dup");
440 8e278d17 2020-03-18 stsp 		goto done;
441 8e278d17 2020-03-18 stsp 	}
442 8e278d17 2020-03-18 stsp 
443 d2cdc636 2020-03-18 stsp 	packfile_size = 0;
444 8f2d01a6 2020-03-18 stsp 	while (!done) {
445 d9b4d0c0 2020-03-18 stsp 		struct got_object_id *id = NULL;
446 d9b4d0c0 2020-03-18 stsp 		char *refname = NULL;
447 531c3985 2020-03-18 stsp 		char *server_progress = NULL;
448 d2cdc636 2020-03-18 stsp 		off_t packfile_size_cur;
449 8e278d17 2020-03-18 stsp 
450 8f2d01a6 2020-03-18 stsp 		err = got_privsep_recv_fetch_progress(&done,
451 d2cdc636 2020-03-18 stsp 		    &id, &refname, symrefs, &server_progress,
452 85e8591f 2020-03-18 stsp 		    &packfile_size_cur, &fetchibuf);
453 8f2d01a6 2020-03-18 stsp 		if (err != NULL)
454 8e278d17 2020-03-18 stsp 			goto done;
455 d9b4d0c0 2020-03-18 stsp 		if (done)
456 d9b4d0c0 2020-03-18 stsp 			*pack_hash = id;
457 d9b4d0c0 2020-03-18 stsp 		else if (refname && id) {
458 d9b4d0c0 2020-03-18 stsp 			err = got_pathlist_append(refs, refname, id);
459 8f2d01a6 2020-03-18 stsp 			if (err)
460 8e278d17 2020-03-18 stsp 				goto done;
461 531c3985 2020-03-18 stsp 		} else if (server_progress) {
462 531c3985 2020-03-18 stsp 			char *s, *s0 = server_progress;
463 531c3985 2020-03-18 stsp 			while ((s = strsep(&s0, "\r")) != NULL) {
464 531c3985 2020-03-18 stsp 				if (*s == '\0')
465 531c3985 2020-03-18 stsp 					continue;
466 668a20f6 2020-03-18 stsp 				err = progress_cb(progress_arg, s,
467 668a20f6 2020-03-18 stsp 				    packfile_size_cur, 0, 0, 0, 0);
468 531c3985 2020-03-18 stsp 				if (err)
469 531c3985 2020-03-18 stsp 					break;
470 531c3985 2020-03-18 stsp 			}
471 531c3985 2020-03-18 stsp 			free(server_progress);
472 531c3985 2020-03-18 stsp 			if (err)
473 531c3985 2020-03-18 stsp 				goto done;
474 d2cdc636 2020-03-18 stsp 		} else if (packfile_size_cur != packfile_size) {
475 d2cdc636 2020-03-18 stsp 			err = progress_cb(progress_arg, NULL,
476 668a20f6 2020-03-18 stsp 			    packfile_size_cur, 0, 0, 0, 0);
477 d2cdc636 2020-03-18 stsp 			if (err)
478 d2cdc636 2020-03-18 stsp 				break;
479 d2cdc636 2020-03-18 stsp 			packfile_size = packfile_size_cur;
480 8f2d01a6 2020-03-18 stsp 		}
481 8f2d01a6 2020-03-18 stsp 	}
482 85e8591f 2020-03-18 stsp 	if (waitpid(fetchpid, &fetchstatus, 0) == -1) {
483 8e278d17 2020-03-18 stsp 		err = got_error_from_errno("waitpid");
484 8e278d17 2020-03-18 stsp 		goto done;
485 8e278d17 2020-03-18 stsp 	}
486 849f7557 2020-03-18 stsp 
487 849f7557 2020-03-18 stsp 	if (lseek(packfd, 0, SEEK_SET) == -1) {
488 849f7557 2020-03-18 stsp 		err = got_error_from_errno("lseek");
489 849f7557 2020-03-18 stsp 		goto done;
490 849f7557 2020-03-18 stsp 	}
491 849f7557 2020-03-18 stsp 	err = check_pack_hash(packfd, packfile_size, (*pack_hash)->sha1);
492 849f7557 2020-03-18 stsp 	if (err)
493 849f7557 2020-03-18 stsp 		goto done;
494 531c3985 2020-03-18 stsp  
495 8e278d17 2020-03-18 stsp 	if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, imsg_idxfds) == -1) {
496 8e278d17 2020-03-18 stsp 		err = got_error_from_errno("socketpair");
497 8e278d17 2020-03-18 stsp 		goto done;
498 8e278d17 2020-03-18 stsp 	}
499 85e8591f 2020-03-18 stsp 	idxpid = fork();
500 85e8591f 2020-03-18 stsp 	if (idxpid == -1) {
501 8e278d17 2020-03-18 stsp 		err= got_error_from_errno("fork");
502 8e278d17 2020-03-18 stsp 		goto done;
503 85e8591f 2020-03-18 stsp 	} else if (idxpid == 0)
504 8e278d17 2020-03-18 stsp 		got_privsep_exec_child(imsg_idxfds,
505 12491971 2020-03-18 stsp 		    GOT_PATH_PROG_INDEX_PACK, tmppackpath);
506 8e278d17 2020-03-18 stsp 	if (close(imsg_idxfds[1]) != 0) {
507 8e278d17 2020-03-18 stsp 		err = got_error_from_errno("close");
508 8e278d17 2020-03-18 stsp 		goto done;
509 8e278d17 2020-03-18 stsp 	}
510 85e8591f 2020-03-18 stsp 	imsg_init(&idxibuf, imsg_idxfds[0]);
511 93658fb9 2020-03-18 stsp 
512 668a20f6 2020-03-18 stsp 	err = got_privsep_send_index_pack_req(&idxibuf, (*pack_hash)->sha1,
513 668a20f6 2020-03-18 stsp 	    npackfd);
514 93658fb9 2020-03-18 stsp 	if (err != NULL)
515 8e278d17 2020-03-18 stsp 		goto done;
516 8e278d17 2020-03-18 stsp 	npackfd = -1;
517 73ab1060 2020-03-18 stsp 	err = got_privsep_send_index_pack_outfd(&idxibuf, nidxfd);
518 93658fb9 2020-03-18 stsp 	if (err != NULL)
519 8e278d17 2020-03-18 stsp 		goto done;
520 8e278d17 2020-03-18 stsp 	nidxfd = -1;
521 4788f1ce 2020-03-18 stsp 	err = got_privsep_send_tmpfd(&idxibuf, tmpfd);
522 4788f1ce 2020-03-18 stsp 	if (err != NULL)
523 4788f1ce 2020-03-18 stsp 		goto done;
524 4788f1ce 2020-03-18 stsp 	tmpfd = -1;
525 baa9fea0 2020-03-18 stsp 	done = 0;
526 baa9fea0 2020-03-18 stsp 	while (!done) {
527 668a20f6 2020-03-18 stsp 		int nobj_total, nobj_indexed, nobj_loose, nobj_resolved;
528 668a20f6 2020-03-18 stsp 
529 668a20f6 2020-03-18 stsp 		err = got_privsep_recv_index_progress(&done, &nobj_total,
530 668a20f6 2020-03-18 stsp 		    &nobj_indexed, &nobj_loose, &nobj_resolved,
531 668a20f6 2020-03-18 stsp 		    &idxibuf);
532 baa9fea0 2020-03-18 stsp 		if (err != NULL)
533 baa9fea0 2020-03-18 stsp 			goto done;
534 668a20f6 2020-03-18 stsp 		if (nobj_indexed != 0) {
535 baa9fea0 2020-03-18 stsp 			err = progress_cb(progress_arg, NULL,
536 668a20f6 2020-03-18 stsp 			    packfile_size, nobj_total,
537 668a20f6 2020-03-18 stsp 			    nobj_indexed, nobj_loose, nobj_resolved);
538 baa9fea0 2020-03-18 stsp 			if (err)
539 baa9fea0 2020-03-18 stsp 				break;
540 baa9fea0 2020-03-18 stsp 		}
541 baa9fea0 2020-03-18 stsp 		imsg_clear(&idxibuf);
542 baa9fea0 2020-03-18 stsp 	}
543 8e278d17 2020-03-18 stsp 	if (close(imsg_idxfds[0]) == -1) {
544 8e278d17 2020-03-18 stsp 		err = got_error_from_errno("close");
545 8e278d17 2020-03-18 stsp 		goto done;
546 8e278d17 2020-03-18 stsp 	}
547 85e8591f 2020-03-18 stsp 	if (waitpid(idxpid, &idxstatus, 0) == -1) {
548 8e278d17 2020-03-18 stsp 		err = got_error_from_errno("waitpid");
549 8e278d17 2020-03-18 stsp 		goto done;
550 8e278d17 2020-03-18 stsp 	}
551 93658fb9 2020-03-18 stsp 
552 d9b4d0c0 2020-03-18 stsp 	err = got_object_id_str(&id_str, *pack_hash);
553 afa77e03 2020-03-18 stsp 	if (err)
554 8e278d17 2020-03-18 stsp 		goto done;
555 66cba96f 2020-03-18 stsp 	if (asprintf(&packpath, "%s/%s/pack-%s.pack",
556 66cba96f 2020-03-18 stsp 	    repo_path, GOT_OBJECTS_PACK_DIR, id_str) == -1) {
557 8e278d17 2020-03-18 stsp 		err = got_error_from_errno("asprintf");
558 8e278d17 2020-03-18 stsp 		goto done;
559 8e278d17 2020-03-18 stsp 	}
560 93658fb9 2020-03-18 stsp 
561 66cba96f 2020-03-18 stsp 	if (asprintf(&idxpath, "%s/%s/pack-%s.idx",
562 66cba96f 2020-03-18 stsp 	    repo_path, GOT_OBJECTS_PACK_DIR, id_str) == -1) {
563 8e278d17 2020-03-18 stsp 		err = got_error_from_errno("asprintf");
564 8e278d17 2020-03-18 stsp 		goto done;
565 8e278d17 2020-03-18 stsp 	}
566 afa77e03 2020-03-18 stsp 
567 8e278d17 2020-03-18 stsp 	if (rename(tmppackpath, packpath) == -1) {
568 8e278d17 2020-03-18 stsp 		err = got_error_from_errno3("rename", tmppackpath, packpath);
569 8e278d17 2020-03-18 stsp 		goto done;
570 8e278d17 2020-03-18 stsp 	}
571 8e278d17 2020-03-18 stsp 	if (rename(tmpidxpath, idxpath) == -1) {
572 8e278d17 2020-03-18 stsp 		err = got_error_from_errno3("rename", tmpidxpath, idxpath);
573 8e278d17 2020-03-18 stsp 		goto done;
574 8e278d17 2020-03-18 stsp 	}
575 ee61b6d3 2020-03-18 stsp 
576 8e278d17 2020-03-18 stsp done:
577 20eb36d0 2020-03-18 stsp 	if (nfetchfd != -1 && close(nfetchfd) == -1 && err == NULL)
578 8e278d17 2020-03-18 stsp 		err = got_error_from_errno("close");
579 8e278d17 2020-03-18 stsp 	if (npackfd != -1 && close(npackfd) == -1 && err == NULL)
580 8e278d17 2020-03-18 stsp 		err = got_error_from_errno("close");
581 8e278d17 2020-03-18 stsp 	if (packfd != -1 && close(packfd) == -1 && err == NULL)
582 8e278d17 2020-03-18 stsp 		err = got_error_from_errno("close");
583 8e278d17 2020-03-18 stsp 	if (idxfd != -1 && close(idxfd) == -1 && err == NULL)
584 8e278d17 2020-03-18 stsp 		err = got_error_from_errno("close");
585 4788f1ce 2020-03-18 stsp 	if (tmpfd != -1 && close(tmpfd) == -1 && err == NULL)
586 4788f1ce 2020-03-18 stsp 		err = got_error_from_errno("close");
587 afa77e03 2020-03-18 stsp 	free(tmppackpath);
588 afa77e03 2020-03-18 stsp 	free(tmpidxpath);
589 fe4e1501 2020-03-18 stsp 	free(idxpath);
590 afa77e03 2020-03-18 stsp 	free(packpath);
591 fe4e1501 2020-03-18 stsp 
592 d9b4d0c0 2020-03-18 stsp 	if (err) {
593 d9b4d0c0 2020-03-18 stsp 		free(*pack_hash);
594 d9b4d0c0 2020-03-18 stsp 		*pack_hash = NULL;
595 d9b4d0c0 2020-03-18 stsp 		TAILQ_FOREACH(pe, refs, entry) {
596 d9b4d0c0 2020-03-18 stsp 			free((void *)pe->path);
597 d9b4d0c0 2020-03-18 stsp 			free(pe->data);
598 d9b4d0c0 2020-03-18 stsp 		}
599 d9b4d0c0 2020-03-18 stsp 		got_pathlist_free(refs);
600 d9b4d0c0 2020-03-18 stsp 		TAILQ_FOREACH(pe, symrefs, entry) {
601 d9b4d0c0 2020-03-18 stsp 			free((void *)pe->path);
602 d9b4d0c0 2020-03-18 stsp 			free(pe->data);
603 d9b4d0c0 2020-03-18 stsp 		}
604 d9b4d0c0 2020-03-18 stsp 		got_pathlist_free(symrefs);
605 d9b4d0c0 2020-03-18 stsp 	}
606 8e278d17 2020-03-18 stsp 	return err;
607 93658fb9 2020-03-18 stsp }