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authorDavid Oberhollenzer <david.oberhollenzer@sigma-star.at>2020-04-27 11:59:02 +0200
committerDavid Oberhollenzer <david.oberhollenzer@sigma-star.at>2020-04-27 11:59:02 +0200
commit20b0d509f67dea802706cd6b80b5e20d14988931 (patch)
tree3a87ea358b1206f6823777693d109896d6908283 /bin/rdsquashfs/dump_xattrs.c
parent9e332a2d3eddcc262476ac263e03df021b3c44b4 (diff)
Cleanup directory structure of the binary programs
Instead of having the binary programs in randomly named subdirectories, move all of them to a "bin" subdirectory, similar to the utility libraries that have subdirectories within "lib" and give the subdirectories the propper names (e.g. have gensquashfs source in a directory *actually* named "gensquashfs"). Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
Diffstat (limited to 'bin/rdsquashfs/dump_xattrs.c')
-rw-r--r--bin/rdsquashfs/dump_xattrs.c120
1 files changed, 120 insertions, 0 deletions
diff --git a/bin/rdsquashfs/dump_xattrs.c b/bin/rdsquashfs/dump_xattrs.c
new file mode 100644
index 0000000..93b0b01
--- /dev/null
+++ b/bin/rdsquashfs/dump_xattrs.c
@@ -0,0 +1,120 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later */
+/*
+ * dump_xattrs.c
+ *
+ * Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at>
+ */
+#include "rdsquashfs.h"
+
+static void print_hex(const sqfs_u8 *value, size_t len)
+{
+ printf("0x");
+
+ while (len--)
+ printf("%02X", *(value++));
+}
+
+static bool is_printable(const sqfs_u8 *value, size_t len)
+{
+ size_t utf8_cont = 0;
+ sqfs_u8 x;
+
+ while (len--) {
+ x = *(value++);
+
+ if (utf8_cont > 0) {
+ if ((x & 0xC0) != 0x80)
+ return false;
+
+ --utf8_cont;
+ } else {
+ if (x < 0x80) {
+ if (x < 0x20) {
+ if (x >= 0x07 && x <= 0x0D)
+ continue;
+ if (x == 0x00)
+ continue;
+ return false;
+ }
+
+ if (x == 0x7F)
+ return false;
+ }
+
+ if ((x & 0xE0) == 0xC0) {
+ utf8_cont = 1;
+ } else if ((x & 0xF0) == 0xE0) {
+ utf8_cont = 2;
+ } else if ((x & 0xF8) == 0xF0) {
+ utf8_cont = 3;
+ } else if ((x & 0xFC) == 0xF8) {
+ utf8_cont = 4;
+ } else if ((x & 0xFE) == 0xFC) {
+ utf8_cont = 5;
+ }
+
+ if (utf8_cont > 0 && len < utf8_cont)
+ return false;
+ }
+ }
+
+ return true;
+}
+
+int dump_xattrs(sqfs_xattr_reader_t *xattr, const sqfs_inode_generic_t *inode)
+{
+ sqfs_xattr_value_t *value;
+ sqfs_xattr_entry_t *key;
+ sqfs_xattr_id_t desc;
+ sqfs_u32 index;
+ size_t i;
+
+ if (xattr == NULL)
+ return 0;
+
+ sqfs_inode_get_xattr_index(inode, &index);
+
+ if (index == 0xFFFFFFFF)
+ return 0;
+
+ if (sqfs_xattr_reader_get_desc(xattr, index, &desc)) {
+ fputs("Error resolving xattr index\n", stderr);
+ return -1;
+ }
+
+ if (sqfs_xattr_reader_seek_kv(xattr, &desc)) {
+ fputs("Error locating xattr key-value pairs\n", stderr);
+ return -1;
+ }
+
+ for (i = 0; i < desc.count; ++i) {
+ if (sqfs_xattr_reader_read_key(xattr, &key)) {
+ fputs("Error reading xattr key\n", stderr);
+ return -1;
+ }
+
+ if (sqfs_xattr_reader_read_value(xattr, key, &value)) {
+ fputs("Error reading xattr value\n", stderr);
+ free(key);
+ return -1;
+ }
+
+ if (is_printable(key->key, key->size)) {
+ printf("%s=", key->key);
+ } else {
+ print_hex(key->key, key->size);
+ }
+
+ if (is_printable(value->value, value->size)) {
+ printf("%s\n", value->value);
+ } else {
+ print_hex(value->value, value->size);
+ printf("\n");
+ }
+
+ free(key);
+ free(value);
+ }
+
+ return 0;
+}