freebsd-nq/usr.sbin/pkg/pkg.c
Baptiste Daroussin 514ead92ea Add missing \n when generating pkg.conf
Reported by:	beat
Approved by:	des (mentor)
MFC after:	1 day
2012-05-21 15:45:18 +00:00

409 lines
8.8 KiB
C

/*-
* Copyright (c) 2012 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/elf_common.h>
#include <sys/endian.h>
#include <sys/wait.h>
#include <archive.h>
#include <archive_entry.h>
#include <ctype.h>
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <fetch.h>
#include <gelf.h>
#include <paths.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#include "elf_tables.h"
#define _LOCALBASE "/usr/local"
#define _PKGS_URL "http://pkgbeta.FreeBSD.org"
static const char *
elf_corres_to_string(struct _elf_corres *m, int e)
{
int i;
for (i = 0; m[i].string != NULL; i++)
if (m[i].elf_nb == e)
return (m[i].string);
return ("unknown");
}
static int
pkg_get_myabi(char *dest, size_t sz)
{
Elf *elf;
Elf_Data *data;
Elf_Note note;
Elf_Scn *scn;
char *src, *osname;
const char *abi;
GElf_Ehdr elfhdr;
GElf_Shdr shdr;
int fd, i, ret;
uint32_t version;
version = 0;
ret = -1;
scn = NULL;
abi = NULL;
if (elf_version(EV_CURRENT) == EV_NONE) {
warnx("ELF library initialization failed: %s",
elf_errmsg(-1));
return (-1);
}
if ((fd = open("/bin/sh", O_RDONLY)) < 0) {
warn("open()");
return (-1);
}
if ((elf = elf_begin(fd, ELF_C_READ, NULL)) == NULL) {
ret = -1;
warnx("elf_begin() failed: %s.", elf_errmsg(-1));
goto cleanup;
}
if (gelf_getehdr(elf, &elfhdr) == NULL) {
ret = -1;
warn("getehdr() failed: %s.", elf_errmsg(-1));
goto cleanup;
}
while ((scn = elf_nextscn(elf, scn)) != NULL) {
if (gelf_getshdr(scn, &shdr) != &shdr) {
ret = -1;
warn("getshdr() failed: %s.", elf_errmsg(-1));
goto cleanup;
}
if (shdr.sh_type == SHT_NOTE)
break;
}
if (scn == NULL) {
ret = -1;
warn("failed to get the note section");
goto cleanup;
}
data = elf_getdata(scn, NULL);
src = data->d_buf;
for (;;) {
memcpy(&note, src, sizeof(Elf_Note));
src += sizeof(Elf_Note);
if (note.n_type == NT_VERSION)
break;
src += note.n_namesz + note.n_descsz;
}
osname = src;
src += note.n_namesz;
if (elfhdr.e_ident[EI_DATA] == ELFDATA2MSB)
version = be32dec(src);
else
version = le32dec(src);
for (i = 0; osname[i] != '\0'; i++)
osname[i] = (char)tolower(osname[i]);
snprintf(dest, sz, "%s:%d:%s:%s",
osname, version / 100000,
elf_corres_to_string(mach_corres, (int)elfhdr.e_machine),
elf_corres_to_string(wordsize_corres,
(int)elfhdr.e_ident[EI_CLASS]));
ret = 0;
switch (elfhdr.e_machine) {
case EM_ARM:
snprintf(dest + strlen(dest), sz - strlen(dest),
":%s:%s:%s", elf_corres_to_string(endian_corres,
(int)elfhdr.e_ident[EI_DATA]),
(elfhdr.e_flags & EF_ARM_NEW_ABI) > 0 ?
"eabi" : "oabi",
(elfhdr.e_flags & EF_ARM_VFP_FLOAT) > 0 ?
"softfp" : "vfp");
break;
case EM_MIPS:
/*
* this is taken from binutils sources:
* include/elf/mips.h
* mapping is figured out from binutils:
* gas/config/tc-mips.c
*/
switch (elfhdr.e_flags & EF_MIPS_ABI) {
case E_MIPS_ABI_O32:
abi = "o32";
break;
case E_MIPS_ABI_N32:
abi = "n32";
break;
default:
if (elfhdr.e_ident[EI_DATA] ==
ELFCLASS32)
abi = "o32";
else if (elfhdr.e_ident[EI_DATA] ==
ELFCLASS64)
abi = "n64";
break;
}
snprintf(dest + strlen(dest), sz - strlen(dest),
":%s:%s", elf_corres_to_string(endian_corres,
(int)elfhdr.e_ident[EI_DATA]), abi);
break;
}
cleanup:
if (elf != NULL)
elf_end(elf);
close(fd);
return (ret);
}
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_compression_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_finish(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)
{
FILE *remote;
FILE *config;
char *site;
char url[MAXPATHLEN];
char conf[MAXPATHLEN];
char abi[BUFSIZ];
char tmppkg[MAXPATHLEN];
char buf[10240];
char pkgstatic[MAXPATHLEN];
int fd, retry, ret;
struct url_stat st;
off_t done, r;
time_t now;
time_t last;
done = 0;
last = 0;
ret = -1;
remote = NULL;
config = NULL;
printf("Bootstrapping pkg please wait\n");
if (pkg_get_myabi(abi, MAXPATHLEN) != 0) {
warnx("failed to determine the system ABI");
return (-1);
}
if (getenv("PACKAGESITE") != NULL)
snprintf(url, MAXPATHLEN, "%s/Latest/pkg.txz", getenv("PACKAGESITE"));
else
snprintf(url, MAXPATHLEN, "%s/%s/latest/Latest/pkg.txz",
getenv("PACKAGEROOT") ? getenv("PACKAGEROOT") : _PKGS_URL,
getenv("ABI") ? getenv("ABI") : abi);
snprintf(tmppkg, MAXPATHLEN, "%s/pkg.txz.XXXXXX",
getenv("TMPDIR") ? getenv("TMPDIR") : _PATH_TMP);
if ((fd = mkstemp(tmppkg)) == -1) {
warn("mkstemp()");
return (-1);
}
retry = 3;
do {
remote = fetchXGetURL(url, &st, "");
if (remote == NULL)
sleep(1);
} while (remote == NULL && retry-- > 0);
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);
cleanup:
if (remote != NULL)
fclose(remote);
close(fd);
unlink(tmppkg);
return (ret);
}
int
main(__unused int argc, char *argv[])
{
char pkgpath[MAXPATHLEN];
snprintf(pkgpath, MAXPATHLEN, "%s/sbin/pkg",
getenv("LOCALBASE") ? getenv("LOCALBASE") : _LOCALBASE);
if (access(pkgpath, X_OK) == -1)
if (bootstrap_pkg() != 0)
exit(EXIT_FAILURE);
execv(pkgpath, argv);
/* NOT REACHED */
return (EXIT_FAILURE);
}