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/* SPDX-License-Identifier: GPL-3.0-or-later */
/*
* describe.c
*
* Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at>
*/
#include "rdsquashfs.h"
static char *get_name(const sqfs_tree_node_t *n)
{
char *name;
int ret;
ret = sqfs_tree_node_get_path(n, &name);
if (ret != 0) {
sqfs_perror(NULL, "Recovering file path of tree node", ret);
return NULL;
}
if (canonicalize_name(name) != 0) {
fprintf(stderr, "Error sanitizing file path '%s'\n", name);
sqfs_free(name);
return NULL;
}
return name;
}
static void print_stub(const char *type, const char *name,
const sqfs_tree_node_t *n)
{
const char *start, *ptr;
printf("%s ", type);
if (strchr(name, ' ') == NULL && strchr(name, '"') == NULL) {
fputs(name, stdout);
} else {
fputc('"', stdout);
ptr = strchr(name, '"');
if (ptr != NULL) {
start = name;
do {
fwrite(start, 1, ptr - start, stdout);
fputs("\\\"", stdout);
start = ptr + 1;
ptr = strchr(start, '"');
} while (ptr != NULL);
fputs(start, stdout);
} else {
fputs(name, stdout);
}
fputc('"', stdout);
}
printf(" 0%o %u %u", (unsigned int)n->inode->base.mode & (~S_IFMT),
n->uid, n->gid);
}
static int print_simple(const char *type, const sqfs_tree_node_t *n,
const char *extra)
{
char *name = get_name(n);
if (name == NULL)
return -1;
print_stub(type, name, n);
sqfs_free(name);
if (extra != NULL)
printf(" %s", extra);
fputc('\n', stdout);
return 0;
}
static int print_file(const sqfs_tree_node_t *n, const char *unpack_root)
{
char *name, *srcpath;
name = get_name(n);
if (name == NULL)
return -1;
#if defined(_WIN32) || defined(__WINDOWS__)
srcpath = fix_win32_filename(name);
if (srcpath == NULL) {
fprintf(stderr, "Error sanitizing windows name '%s'\n",
name);
sqfs_free(name);
return -1;
}
if (strcmp(name, srcpath) == 0) {
free(srcpath);
srcpath = NULL;
}
#else
srcpath = NULL;
#endif
print_stub("file", name, n);
if (unpack_root == NULL && srcpath != NULL) {
printf(" %s", srcpath);
} else if (unpack_root != NULL) {
printf(" %s/%s", unpack_root,
srcpath == NULL ? name : srcpath);
}
fputc('\n', stdout);
free(srcpath);
sqfs_free(name);
return 0;
}
int describe_tree(const sqfs_tree_node_t *root, const char *unpack_root)
{
const sqfs_tree_node_t *n;
if (!is_filename_sane((const char *)root->name)) {
fprintf(stderr, "Encountered illegal file name '%s'\n",
root->name);
return -1;
}
switch (root->inode->base.mode & S_IFMT) {
case S_IFSOCK:
return print_simple("sock", root, NULL);
case S_IFLNK:
return print_simple("slink", root,
(const char *)root->inode->extra);
case S_IFIFO:
return print_simple("pipe", root, NULL);
case S_IFREG:
return print_file(root, unpack_root);
case S_IFCHR:
case S_IFBLK: {
char buffer[32];
sqfs_u32 devno;
if (root->inode->base.type == SQFS_INODE_EXT_BDEV ||
root->inode->base.type == SQFS_INODE_EXT_CDEV) {
devno = root->inode->data.dev_ext.devno;
} else {
devno = root->inode->data.dev.devno;
}
sprintf(buffer, "%c %u %u",
S_ISCHR(root->inode->base.mode) ? 'c' : 'b',
major(devno), minor(devno));
return print_simple("nod", root, buffer);
}
case S_IFDIR:
if (root->name[0] != '\0') {
if (print_simple("dir", root, NULL))
return -1;
}
for (n = root->children; n != NULL; n = n->next) {
if (describe_tree(n, unpack_root))
return -1;
}
break;
default:
break;
}
return 0;
}
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