freebsd-dev/usr.sbin/pkg/pkg.c
Baptiste Daroussin 968d04c371 Fix bootstrapping pkgng by not appending "/latest/" to PACKAGESITE.
Reporter by :	Alexander Yerenkow (via irc)
2013-03-08 10:43:03 +00:00

337 lines
7.6 KiB
C

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