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