365 lines
8.3 KiB
C
365 lines
8.3 KiB
C
/*-
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* Copyright (c) 2012-2013 Baptiste Daroussin <bapt@FreeBSD.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/wait.h>
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#include <archive.h>
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#include <archive_entry.h>
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#include <err.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <fetch.h>
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#include <paths.h>
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#include <stdbool.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <time.h>
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#include <unistd.h>
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#include "dns_utils.h"
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#include "config.h"
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static int
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extract_pkg_static(int fd, char *p, int sz)
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{
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struct archive *a;
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struct archive_entry *ae;
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char *end;
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int ret, r;
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ret = -1;
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a = archive_read_new();
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if (a == NULL) {
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warn("archive_read_new");
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return (ret);
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}
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archive_read_support_filter_all(a);
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archive_read_support_format_tar(a);
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if (lseek(fd, 0, 0) == -1) {
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warn("lseek");
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goto cleanup;
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}
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if (archive_read_open_fd(a, fd, 4096) != ARCHIVE_OK) {
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warnx("archive_read_open_fd: %s", archive_error_string(a));
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goto cleanup;
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}
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ae = NULL;
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while ((r = archive_read_next_header(a, &ae)) == ARCHIVE_OK) {
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end = strrchr(archive_entry_pathname(ae), '/');
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if (end == NULL)
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continue;
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if (strcmp(end, "/pkg-static") == 0) {
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r = archive_read_extract(a, ae,
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ARCHIVE_EXTRACT_OWNER | ARCHIVE_EXTRACT_PERM |
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ARCHIVE_EXTRACT_TIME | ARCHIVE_EXTRACT_ACL |
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ARCHIVE_EXTRACT_FFLAGS | ARCHIVE_EXTRACT_XATTR);
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strlcpy(p, archive_entry_pathname(ae), sz);
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break;
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}
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}
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if (r == ARCHIVE_OK)
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ret = 0;
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else
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warnx("fail to extract pkg-static");
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cleanup:
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archive_read_free(a);
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return (ret);
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}
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static int
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install_pkg_static(char *path, char *pkgpath)
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{
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int pstat;
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pid_t pid;
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switch ((pid = fork())) {
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case -1:
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return (-1);
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case 0:
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execl(path, "pkg-static", "add", pkgpath, (char *)NULL);
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_exit(1);
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default:
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break;
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}
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while (waitpid(pid, &pstat, 0) == -1)
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if (errno != EINTR)
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return (-1);
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if (WEXITSTATUS(pstat))
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return (WEXITSTATUS(pstat));
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else if (WIFSIGNALED(pstat))
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return (128 & (WTERMSIG(pstat)));
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return (pstat);
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}
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static int
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bootstrap_pkg(void)
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{
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struct url *u;
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FILE *remote;
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FILE *config;
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char *site;
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struct dns_srvinfo *mirrors, *current;
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/* To store _https._tcp. + hostname + \0 */
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char zone[MAXHOSTNAMELEN + 13];
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char url[MAXPATHLEN];
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char conf[MAXPATHLEN];
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char tmppkg[MAXPATHLEN];
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const char *packagesite, *mirror_type;
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char buf[10240];
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char pkgstatic[MAXPATHLEN];
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int fd, retry, ret, max_retry;
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struct url_stat st;
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off_t done, r;
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time_t now;
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time_t last;
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done = 0;
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last = 0;
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max_retry = 3;
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ret = -1;
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remote = NULL;
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config = NULL;
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current = mirrors = NULL;
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if (config_string(PACKAGESITE, &packagesite) != 0) {
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warnx("No PACKAGESITE defined");
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return (-1);
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}
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if (config_string(MIRROR_TYPE, &mirror_type) != 0) {
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warnx("No MIRROR_TYPE defined");
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return (-1);
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}
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printf("Bootstrapping pkg from %s, please wait...\n", packagesite);
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/* Support pkg+http:// for PACKAGESITE which is the new format
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in 1.2 to avoid confusion on why http://pkg.FreeBSD.org has
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no A record. */
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if (strncmp(URL_SCHEME_PREFIX, packagesite,
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strlen(URL_SCHEME_PREFIX)) == 0)
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packagesite += strlen(URL_SCHEME_PREFIX);
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snprintf(url, MAXPATHLEN, "%s/Latest/pkg.txz", packagesite);
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snprintf(tmppkg, MAXPATHLEN, "%s/pkg.txz.XXXXXX",
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getenv("TMPDIR") ? getenv("TMPDIR") : _PATH_TMP);
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if ((fd = mkstemp(tmppkg)) == -1) {
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warn("mkstemp()");
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return (-1);
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}
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retry = max_retry;
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u = fetchParseURL(url);
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while (remote == NULL) {
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if (retry == max_retry) {
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if (strcmp(u->scheme, "file") != 0 &&
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strcasecmp(mirror_type, "srv") == 0) {
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snprintf(zone, sizeof(zone),
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"_%s._tcp.%s", u->scheme, u->host);
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mirrors = dns_getsrvinfo(zone);
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current = mirrors;
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}
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}
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if (mirrors != NULL) {
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strlcpy(u->host, current->host, sizeof(u->host));
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u->port = current->port;
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}
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remote = fetchXGet(u, &st, "");
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if (remote == NULL) {
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--retry;
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if (retry <= 0)
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goto fetchfail;
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if (mirrors == NULL) {
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sleep(1);
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} else {
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current = current->next;
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if (current == NULL)
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current = mirrors;
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}
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}
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}
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if (remote == NULL)
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goto fetchfail;
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while (done < st.size) {
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if ((r = fread(buf, 1, sizeof(buf), remote)) < 1)
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break;
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if (write(fd, buf, r) != r) {
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warn("write()");
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goto cleanup;
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}
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done += r;
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now = time(NULL);
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if (now > last || done == st.size)
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last = now;
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}
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if (ferror(remote))
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goto fetchfail;
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if ((ret = extract_pkg_static(fd, pkgstatic, MAXPATHLEN)) == 0)
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ret = install_pkg_static(pkgstatic, tmppkg);
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snprintf(conf, MAXPATHLEN, "%s/etc/pkg.conf",
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getenv("LOCALBASE") ? getenv("LOCALBASE") : _LOCALBASE);
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if (access(conf, R_OK) == -1) {
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site = strrchr(url, '/');
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if (site == NULL)
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goto cleanup;
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site[0] = '\0';
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site = strrchr(url, '/');
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if (site == NULL)
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goto cleanup;
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site[0] = '\0';
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config = fopen(conf, "w+");
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if (config == NULL)
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goto cleanup;
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fprintf(config, "packagesite: %s\n", url);
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fclose(config);
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}
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goto cleanup;
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fetchfail:
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warnx("Error fetching %s: %s", url, fetchLastErrString);
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fprintf(stderr, "A pre-built version of pkg could not be found for "
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"your system.\n");
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fprintf(stderr, "Consider changing PACKAGESITE or installing it from "
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"ports: 'ports-mgmt/pkg'.\n");
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cleanup:
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if (remote != NULL)
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fclose(remote);
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close(fd);
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unlink(tmppkg);
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return (ret);
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}
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static const char confirmation_message[] =
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"The package management tool is not yet installed on your system.\n"
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"Do you want to fetch and install it now? [y/N]: ";
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static int
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pkg_query_yes_no(void)
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{
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int ret, c;
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c = getchar();
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if (c == 'y' || c == 'Y')
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ret = 1;
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else
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ret = 0;
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while (c != '\n' && c != EOF)
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c = getchar();
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return (ret);
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}
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int
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main(__unused int argc, char *argv[])
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{
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char pkgpath[MAXPATHLEN];
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char pkgstatic[MAXPATHLEN];
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bool yes = false;
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int fd, ret;
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snprintf(pkgpath, MAXPATHLEN, "%s/sbin/pkg",
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getenv("LOCALBASE") ? getenv("LOCALBASE") : _LOCALBASE);
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if (access(pkgpath, X_OK) == -1) {
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/*
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* To allow 'pkg -N' to be used as a reliable test for whether
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* a system is configured to use pkg, don't bootstrap pkg
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* when that argument is given as argv[1].
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*/
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if (argv[1] != NULL && strcmp(argv[1], "-N") == 0)
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errx(EXIT_FAILURE, "pkg is not installed");
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if (argc > 2 && strcmp(argv[1], "add") == 0 &&
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access(argv[2], R_OK) == 0) {
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fd = open(argv[2], O_RDONLY);
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if (fd == -1)
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err(EXIT_FAILURE, "Unable to open %s", argv[2]);
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if ((ret = extract_pkg_static(fd, pkgstatic, MAXPATHLEN)) == 0)
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ret = install_pkg_static(pkgstatic, argv[2]);
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close(fd);
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if (ret != 0)
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exit(EXIT_FAILURE);
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exit(EXIT_SUCCESS);
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}
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/*
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* Do not ask for confirmation if either of stdin or stdout is
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* not tty. Check the environment to see if user has answer
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* tucked in there already.
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*/
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config_init();
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config_bool(ASSUME_ALWAYS_YES, &yes);
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if (!yes) {
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printf("%s", confirmation_message);
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if (!isatty(fileno(stdin)))
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exit(EXIT_FAILURE);
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if (pkg_query_yes_no() == 0)
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exit(EXIT_FAILURE);
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}
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if (bootstrap_pkg() != 0)
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exit(EXIT_FAILURE);
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config_finish();
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}
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execv(pkgpath, argv);
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/* NOT REACHED */
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return (EXIT_FAILURE);
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}
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