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https://github.com/fail0verflow/switch-coreboot.git
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9d6d811dd1
Signed-off-by: Myles Watson <mylesgw@gmail.com> Acked-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net> git-svn-id: svn://coreboot.org/repository/coreboot-v3@1131 f3766cd6-281f-0410-b1cd-43a5c92072e9
391 lines
8.6 KiB
C
391 lines
8.6 KiB
C
/*
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* lar - lightweight archiver
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*
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* Copyright (C) 2006-2007 coresystems GmbH
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* (Written by Stefan Reinauer <stepan@coresystems.de> for coresystems GmbH)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA, 02110-1301 USA
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <strings.h>
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#include <unistd.h>
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#include <dirent.h>
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#include <errno.h>
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#include <limits.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include "lar.h"
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#include "lib.h"
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#define MAX_PATH 1024
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static struct file *files = NULL;
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/**
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* The default "compress impossible" hook to call when no other compression
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* is used
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*/
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void compress_impossible(char *in, int in_len, char *out, int *out_len)
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{
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fprintf(stderr,
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"The selected compression algorithm wasn't compiled in.\n");
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exit(1);
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}
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/**
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* The default "compress" hook to call when no other compression is used
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*/
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void do_no_compress(char *in, int in_len, char *out, int *out_len)
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{
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memcpy(out, in, in_len);
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out_len[0] = in_len;
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}
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/**
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* The zeroes "compress" hook
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* Leave one byte for calculating the checksum.
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*/
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void do_zeroes_compress(char *in, int in_len, char *out, int *out_len)
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{
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out[0] = 0;
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out_len[0] = 1;
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}
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/**
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* The zeroes "uncompress" hook
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*/
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void do_zeroes_uncompress(char *dst, int dst_len, char *src, int src_len)
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{
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memset(dst, 0, dst_len);
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}
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/**
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* The default "uncompress" hook to call when no other compression is used
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*/
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void do_no_uncompress(char *dst, int dst_len, char *src, int src_len)
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{
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if (dst_len == src_len)
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memcpy(dst, src, dst_len);
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else
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{
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fprintf(stderr, "%s: src_len(%d)!=dst_len(%d)\n",
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__func__, src_len, dst_len);
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exit(1);
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}
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}
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/**
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* The default "uncompress" hook to call when no other compression is used
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*/
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void uncompress_impossible(char *dst, int dst_len, char *src, int src_len)
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{
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fprintf(stderr,
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"Cannot uncompress data (algorithm not compiled in).\n");
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exit(1);
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}
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/**
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* Create a new directory including any missing parent directories.
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*
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* NOTE: This function does not do complete path resolution as described in
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* Linux path_resolution(2) and hence will fail for complex paths:
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*
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* e.g.: mkdirp_below("subdir", "subdir/../subdir/x", 0777);
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*
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* This call should create subdir/x, but since subdir/.. is outside subdir,
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* the function returns an error.
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*
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* @param parent Return an error if a new directory would be created outside
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* this directory. Pass "/" to allow new directories to be created anywhere.
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* @param dirpath The new directory that should be created, the path can be
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* either absolute or relative to the current working directory. (It is not
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* relative to parent.)
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* @param mode Permissions to use for newly created directories.
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*/
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int mkdirp_below(const char *parent, const char *dirpath, mode_t mode)
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{
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int ret = -1;
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size_t dirsep, parlen, sublen;
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char c, *r, *path = NULL, *subdir, rpar[PATH_MAX], rsub[PATH_MAX];
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if (!dirpath) {
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fprintf(stderr, "mkdirp_below: No new directory specified\n");
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goto done;
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}
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path = strdup(dirpath);
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if (!path) {
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perror("Duplicate new directory failed:");
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goto done;
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}
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if (NULL == realpath(parent, rpar)) {
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fprintf(stderr, "realpath(%s) failed: %s\n", parent,
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strerror(errno));
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goto done;
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}
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parlen = strlen(rpar);
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for (subdir = path, dirsep = 0; subdir[dirsep]; subdir += dirsep) {
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dirsep = strcspn(subdir, "/\\");
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if (!dirsep) {
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subdir++;
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continue;
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}
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c = subdir[dirsep];
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subdir[dirsep] = 0;
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r = realpath(path, rsub);
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sublen = strlen(rsub);
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if (NULL == r) {
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if(ENOENT != errno) {
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fprintf(stderr, "realpath(%s) failed: %s\n",
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path, strerror(errno));
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goto done;
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}
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} else if (sublen < parlen || strncmp(rpar, rsub, parlen)) {
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fprintf(stderr, "Abort: %s is outside %s\n", dirpath,
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parent);
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goto done;
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}
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if(-1 == mkdir(path, mode) && EEXIST != errno) {
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fprintf(stderr, "mkdir(%s): %s\n", path,
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strerror(errno));
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goto done;
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}
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subdir[dirsep] = c;
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}
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ret = 0;
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done:
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if (path)
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free(path);
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return ret;
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}
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static int handle_directory(const char *name, const char *pathname,
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const enum compalgo thisalgo)
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{
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int n;
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int ret = -1;
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struct dirent **namelist;
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n = scandir(name, &namelist, 0, alphasort);
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if (n < 0) {
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fprintf(stderr, "Could not enter directory %s\n", name);
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} else {
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while (n--) {
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char fullname[MAX_PATHLEN+1];
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char fullpathname[MAX_PATHLEN+1];
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int len;
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if (strncmp("..", namelist[n]->d_name, 3) &&
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strncmp(".", namelist[n]->d_name, 2)) {
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len = strlen(name);
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len += (name[len-1]=='/' ? 1 : 0);
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len += strlen(namelist[n]->d_name);
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if (len > MAX_PATHLEN) {
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fprintf(stderr,
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"%s: %s+%s exceeds MAX_PATHLEN.\n",
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__func__, name,
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namelist[n]->d_name);
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return -1;
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}
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strcpy(fullname, name);
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if (name[(strlen(name)) - 1] != '/') {
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strcat(fullname, "/");
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}
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strcat(fullname, namelist[n]->d_name);
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len = strlen(pathname);
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len += (pathname[len-1]=='/'?1:0);
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len += strlen(namelist[n]->d_name);
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if (len > MAX_PATHLEN) {
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fprintf(stderr,
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"%s: %s+%s exceeds MAX_PATHLEN.\n",
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__func__, pathname,
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namelist[n]->d_name);
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return -1;
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}
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strcpy(fullpathname, pathname);
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if (pathname[(strlen(pathname)) - 1] != '/') {
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strcat(fullpathname, "/");
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}
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strcat(fullpathname, namelist[n]->d_name);
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add_files(fullname, fullpathname, thisalgo);
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}
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free(namelist[n]);
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}
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free(namelist);
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ret = 0;
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}
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return ret;
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}
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/*
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* Add physically existing files to the file list.
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* This function is used when an archive is created or added to.
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*/
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int add_files(const char *filename, const char * pathname,
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const enum compalgo thisalgo)
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{
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struct stat filestat;
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int ret = -1;
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char *c;
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if (verbose())
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printf("%s: %s:%s\n", __func__, filename, pathname);
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if (stat(filename, &filestat) == -1) {
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fprintf(stderr, "Error getting file attributes of %s\n", filename);
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return -1;
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}
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if (S_ISCHR(filestat.st_mode) || S_ISBLK(filestat.st_mode)) {
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fprintf(stderr, "Device files are not supported: %s\n", filename);
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}
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if (S_ISFIFO(filestat.st_mode)) {
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fprintf(stderr, "FIFOs are not supported: %s\n", filename);
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}
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if (S_ISSOCK(filestat.st_mode)) {
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fprintf(stderr, "Sockets are not supported: %s\n", filename);
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}
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if (S_ISLNK(filestat.st_mode)) {
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fprintf(stderr, "Symbolic links are not supported: %s\n", filename);
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}
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/* Is it a directory? */
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if (S_ISDIR(filestat.st_mode)) {
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ret = handle_directory(filename, pathname, thisalgo);
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}
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/* Is it a regular file? */
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if (S_ISREG(filestat.st_mode)) {
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struct file *tmpfile;
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if (verbose())
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printf("... adding %s\n", filename);
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tmpfile = malloc(sizeof(struct file));
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if (!tmpfile) {
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fprintf(stderr, "Out of memory.\n");
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exit(1);
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}
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tmpfile->name = strdup(filename);
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if (!tmpfile->name) {
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fprintf(stderr, "Out of memory.\n");
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exit(1);
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}
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tmpfile->pathname = strdup(pathname);
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if (!tmpfile->pathname) {
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fprintf(stderr, "Out of memory.\n");
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exit(1);
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}
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tmpfile->algo = thisalgo;
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tmpfile->next = files;
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files = tmpfile;
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ret = 0;
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}
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return ret;
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}
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/*
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* Add files or directories as specified to the file list.
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* This function is used when an archive is listed or extracted.
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*/
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int add_file_or_directory(const char *name)
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{
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struct file *tmpfile;
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tmpfile = malloc(sizeof(struct file));
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if (!tmpfile) {
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fprintf(stderr, "Out of memory.\n");
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exit(1);
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}
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tmpfile->name = strdup(name);
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if (!tmpfile->name) {
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fprintf(stderr, "Out of memory.\n");
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exit(1);
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}
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tmpfile->next = files;
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tmpfile->pathname = NULL;
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tmpfile->algo = ALGO_INVALID;
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files = tmpfile;
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return 0;
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}
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struct file *get_files(void)
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{
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return files;
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}
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void free_files(void)
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{
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struct file *temp;
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while (files) {
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temp = files;
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files = files->next;
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free(temp->name);
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if (temp->pathname!=NULL)
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free(temp->pathname);
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free(temp);
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}
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}
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#ifdef DEBUG
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int list_files(void)
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{
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struct file *walk = files;
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printf("File list:\n");
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while (walk) {
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if (temp->pathname==NULL)
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printf("- %s\n", walk->name);
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else
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printf("- %s:%s\n", walk->name, walk->pathname);
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walk = walk->next;
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}
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printf("-----\n");
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return 0;
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}
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#endif
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