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[iso] fix libcio processing of Rock Ridge CE fields

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* Boy do you not want to use chars in struct iso_su_ce_s as
  from_733() will sign extend the bytes and you will end up
  with an offset like 0xffffffc4 instead of 0x000000c4...
* Addresses the leftover from 6c44dccc10.
* Also some headers clean up and pick up latest libcdio changes.
This commit is contained in:
Pete Batard 2023-02-28 18:26:13 +00:00
parent 6c44dccc10
commit cb561e7176
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GPG key ID: 38E0CF5E69EDD671
3 changed files with 60 additions and 49 deletions
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16
src/libcdio/cdio/rock.h
View file

@ -98,23 +98,23 @@ PRAGMA_BEGIN_PACKED
/*! system-use-sharing protocol */
typedef struct iso_su_sp_s{
unsigned char magic[2];
uint8_t magic[2];
uint8_t skip;
} GNUC_PACKED iso_su_sp_t;
/*! system-use extension record */
typedef struct iso_su_er_s {
iso711_t len_id; /**< Identifier length. Value 10?. */
unsigned char len_des;
unsigned char len_src;
uint8_t len_des;
uint8_t len_src;
iso711_t ext_ver; /**< Extension version. Value 1? */
char data[EMPTY_ARRAY_SIZE];
} GNUC_PACKED iso_su_er_t;
typedef struct iso_su_ce_s {
char extent[8];
char offset[8];
char size[8];
uint8_t extent[8];
uint8_t offset[8];
uint8_t size[8];
} iso_su_ce_t;
/*! POSIX file attributes, PX. See Rock Ridge Section 4.1.2 */
@ -165,7 +165,7 @@ typedef struct iso_rock_sl_part_s {
/*! Symbolic link. See Rock Ridge Section 4.1.3 */
typedef struct iso_rock_sl_s {
unsigned char flags;
uint8_t flags;
iso_rock_sl_part_t link;
} GNUC_PACKED iso_rock_sl_t ;
@ -184,7 +184,7 @@ typedef enum {
typedef struct iso_rock_nm_s {
unsigned char flags;
uint8_t flags;
char name[EMPTY_ARRAY_SIZE];
} GNUC_PACKED iso_rock_nm_t ;

35
src/libcdio/iso9660/rock.c
View file

@ -1,6 +1,6 @@
/*
Copyright (C) 2020 Pete Batard <pete@akeo.ie>
Copyright (C) 2005, 2008, 2010-2011, 2014, 2017 Rocky Bernstein
Copyright (C) 2020, 2023 Pete Batard <pete@akeo.ie>
Copyright (C) 2005, 2008, 2010-2011, 2014, 2017, 2022 Rocky Bernstein
<rocky@gnu.org>
Adapted from GNU/Linux fs/isofs/rock.c (C) 1992, 1993 Eric Youngdale
@ -95,27 +95,29 @@ realloc_symlink(/*in/out*/ iso9660_stat_t *p_stat, uint8_t i_grow)
/* This is a way of ensuring that we have something in the system
use fields that is compatible with Rock Ridge */
#define CHECK_SP(FAIL) \
if(rr->u.SP.magic[0] != 0xbe) FAIL; \
if(rr->u.SP.magic[1] != 0xef) FAIL; \
if (rr->u.SP.magic[0] != 0xbe) FAIL; \
if (rr->u.SP.magic[1] != 0xef) FAIL; \
p_stat->rr.s_rock_offset = rr->u.SP.skip;
/* We define a series of macros because each function must do exactly the
same thing in certain places. We use the macros to ensure that everything
is done correctly */
#define CONTINUE_DECLS \
int cont_extent = 0, cont_offset = 0, cont_size = 0; \
void *buffer = NULL
uint32_t cont_extent = 0, cont_offset = 0, cont_size = 0; \
uint8_t *buffer = NULL
#define CHECK_CE \
#define CHECK_CE(FAIL) \
{ cont_extent = from_733(*rr->u.CE.extent); \
cont_offset = from_733(*rr->u.CE.offset); \
if (cont_offset >= ISO_BLOCKSIZE) FAIL; \
cont_size = from_733(*rr->u.CE.size); \
(void)cont_extent; (void)cont_offset, (void)cont_size; }
if (cont_size >= ISO_BLOCKSIZE) FAIL; \
}
#define SETUP_ROCK_RIDGE(DE,CHR,LEN) \
{ \
LEN= sizeof(iso9660_dir_t) + DE->filename.len; \
if(LEN & 1) LEN++; \
if (LEN & 1) LEN++; \
CHR = ((unsigned char *) DE) + LEN; \
LEN = *((unsigned char *) DE) - LEN; \
if (0xff != p_stat->rr.s_rock_offset) \
@ -202,7 +204,7 @@ get_rock_ridge_filename(iso9660_dir_t * p_iso9660_dir,
switch(sig) {
case SIG('S','P'):
CHECK_SP(goto out);
CHECK_SP({cdio_warn("Invalid Rock Ridge SP field"); goto out;});
p_stat->rr.u_su_fields |= ISO_ROCK_SUF_SP;
break;
case SIG('C','E'):
@ -213,8 +215,17 @@ get_rock_ridge_filename(iso9660_dir_t * p_iso9660_dir,
if ('\1' == p_iso9660_dir->filename.str[1] && 1 == i_fname)
break;
}
CHECK_CE;
CHECK_CE({cdio_warn("Invalid Rock Ridge CE field"); goto out;});
p_stat->rr.u_su_fields |= ISO_ROCK_SUF_CE;
/* We may already be processing a continuation block so free it */
free(buffer);
buffer = calloc(1, ISO_BLOCKSIZE);
if (!buffer)
goto out;
if (iso9660_iso_seek_read(p_image, buffer, cont_extent, 1) != ISO_BLOCKSIZE)
goto out;
chr = &buffer[cont_offset];
len = cont_size;
break;
case SIG('E','R'):
cdio_debug("ISO 9660 Extensions: ");
@ -471,7 +482,7 @@ iso9660_get_rock_attr_str(posix_mode_t st_mode)
result[ 8] = (st_mode & ISO_ROCK_IWOTH) ? 'w' : '-';
result[ 9] = (st_mode & ISO_ROCK_IXOTH) ? 'x' : '-';
result[11] = '\0';
result[10] = '\0';
return result;
}

10
src/rufus.rc
View file

@ -33,7 +33,7 @@ LANGUAGE LANG_NEUTRAL, SUBLANG_NEUTRAL
IDD_DIALOG DIALOGEX 12, 12, 232, 326
STYLE DS_SETFONT | DS_MODALFRAME | DS_CENTER | WS_MINIMIZEBOX | WS_POPUP | WS_CAPTION | WS_SYSMENU
EXSTYLE WS_EX_ACCEPTFILES
CAPTION "Rufus 3.22.1984"
CAPTION "Rufus 3.22.1985"
FONT 9, "Segoe UI Symbol", 400, 0, 0x0
BEGIN
LTEXT "Drive Properties",IDS_DRIVE_PROPERTIES_TXT,8,6,53,12,NOT WS_GROUP
@ -392,8 +392,8 @@ END
//
VS_VERSION_INFO VERSIONINFO
FILEVERSION 3,22,1984,0
PRODUCTVERSION 3,22,1984,0
FILEVERSION 3,22,1985,0
PRODUCTVERSION 3,22,1985,0
FILEFLAGSMASK 0x3fL
#ifdef _DEBUG
FILEFLAGS 0x1L
@ -411,13 +411,13 @@ BEGIN
VALUE "Comments", "https://rufus.ie"
VALUE "CompanyName", "Akeo Consulting"
VALUE "FileDescription", "Rufus"
VALUE "FileVersion", "3.22.1984"
VALUE "FileVersion", "3.22.1985"
VALUE "InternalName", "Rufus"
VALUE "LegalCopyright", "© 2011-2023 Pete Batard (GPL v3)"
VALUE "LegalTrademarks", "https://www.gnu.org/licenses/gpl-3.0.html"
VALUE "OriginalFilename", "rufus-3.22.exe"
VALUE "ProductName", "Rufus"
VALUE "ProductVersion", "3.22.1984"
VALUE "ProductVersion", "3.22.1985"
END
END
BLOCK "VarFileInfo"