Add unfinished gpgtar.

Collected changes and ports of bug fixes from stable.
This commit is contained in:
Werner Koch 2010-06-07 13:33:02 +00:00
parent 29cc88db7d
commit bbe388b5db
27 changed files with 2544 additions and 43 deletions

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@ -1,3 +1,11 @@
2010-06-07 Werner Koch <wk@g10code.com>
* configure.ac: Add option --enable-gpgtar.
2010-05-31 Werner Koch <wk@g10code.com>
* configure.ac (AC_CHECK_FUNCS): Check for lstat.
2010-04-30 Werner Koch <wk@g10code.com>
* configure.ac: Add option --enable-standard-socket.

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@ -1,3 +1,8 @@
2010-05-12 Werner Koch <wk@g10code.com>
* preset-passphrase.c (forget_passphrase): Actually implement
this. Fixes bug#1198.
2010-05-11 Werner Koch <wk@g10code.com>
* agent.h (opt): Add field USE_STANDARD_SOCKET.

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@ -189,11 +189,15 @@ forget_passphrase (const char *keygrip)
rc = asprintf (&line, "CLEAR_PASSPHRASE %s\n", keygrip);
if (rc < 0)
rc = gpg_error_from_syserror ();
else
rc = map_spwq_error (simple_query (line));
if (rc)
{
log_error ("clearing passphrase failed: %s\n",
gpg_strerror (gpg_error_from_syserror ()));
log_error ("clearing passphrase failed: %s\n", gpg_strerror (rc));
return;
}
xfree (line);
}

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@ -1,3 +1,22 @@
2010-06-07 Werner Koch <wk@g10code.com>
* estream.c (es_fname_get, es_fname_set): New.
(fname_set_internal): New.
(struct estream_internal): Add fields printable_fname and
printable_fname_inuse.
(_es_get_std_stream): Set stream name.
(es_fopen, es_freopen, es_deinitialize): Set fname.
* exechelp-posix.c (gnupg_spawn_process): Allow passing INFILE or
OUTFILE as NULL.
* exechelp-w32.c (gnupg_spawn_process): Ditto.
* exechelp-w32ce.c (gnupg_spawn_process): Return an error for
INFILE or OUTFILE passed as NULL.
2010-06-01 Werner Koch <wk@g10code.com>
* logging.c (log_get_stream): Make sture a log stream is available.
2010-05-30 Werner Koch <wk@g10code.com>
* init.c (writestring_via_estream): New.
@ -15,7 +34,7 @@
(es_func_fd_destroy): Implement a dummy stream.
* exechelp-w32ce.c (build_w32_commandline): Add args FD0_ISNULL
and FD1_ISNULL. Remove arg PGMNAME. Change callers.
and FD1_ISNULL. Remove arg PGMNAME. Change callers.
(gnupg_spawn_process_detached): Implement.
(gnupg_spawn_process_fd): Implement one special case for now.

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@ -211,6 +211,7 @@ struct estream_internal
void *cookie; /* Cookie. */
void *opaque; /* Opaque data. */
unsigned int modeflags; /* Flags for the backend. */
char *printable_fname; /* Malloced filename for es_fname_get. */
off_t offset;
es_cookie_read_function_t func_read;
es_cookie_write_function_t func_write;
@ -227,6 +228,7 @@ struct estream_internal
unsigned int is_stdstream:1; /* This is a standard stream. */
unsigned int stdstream_fd:2; /* 0, 1 or 2 for a standard stream. */
unsigned int print_err: 1; /* Error in print_fun_writer. */
unsigned int printable_fname_inuse: 1; /* es_fname_get has been used. */
int print_errno; /* Errno from print_fun_writer. */
size_t print_ntotal; /* Bytes written from in print_fun_writer. */
FILE *print_fp; /* Stdio stream used by print_fun_writer. */
@ -266,8 +268,12 @@ static unsigned char custom_std_fds_valid[3];
#endif
/* Local prototypes. */
static void fname_set_internal (estream_t stream, const char *fname, int quote);
/* Macros. */
/* Calculate array dimension. */
@ -1275,6 +1281,8 @@ es_initialize (estream_t stream,
stream->intern->is_stdstream = 0;
stream->intern->stdstream_fd = 0;
stream->intern->deallocate_buffer = 0;
stream->intern->printable_fname = NULL;
stream->intern->printable_fname_inuse = 0;
stream->data_len = 0;
stream->data_offset = 0;
@ -1314,7 +1322,10 @@ es_deinitialize (estream_t stream)
if (func_close)
SET_UNLESS_NONZERO (err, tmp_err, (*func_close) (stream->intern->cookie));
mem_free (stream->intern->printable_fname);
stream->intern->printable_fname = NULL;
stream->intern->printable_fname_inuse = 0;
return err;
}
@ -2190,6 +2201,9 @@ es_fopen (const char *ES__RESTRICT path, const char *ES__RESTRICT mode)
if (err)
goto out;
if (stream && path)
fname_set_internal (stream, path, 1);
out:
if (err && create_called)
@ -2467,6 +2481,9 @@ _es_get_std_stream (int fd)
stream->intern->stdstream_fd = fd;
if (fd == 2)
es_set_buffering (stream, NULL, _IOLBF, 0);
fname_set_internal (stream,
fd == 0? "[stdin]" :
fd == 1? "[stdout]" : "[stderr]", 0);
}
ESTREAM_LIST_UNLOCK;
return stream;
@ -2515,7 +2532,11 @@ es_freopen (const char *ES__RESTRICT path, const char *ES__RESTRICT mode,
stream = NULL;
}
else
ESTREAM_UNLOCK (stream);
{
if (stream && path)
fname_set_internal (stream, path, 1);
ESTREAM_UNLOCK (stream);
}
}
else
{
@ -3407,6 +3428,68 @@ es_opaque_get (estream_t stream)
return opaque;
}
static void
fname_set_internal (estream_t stream, const char *fname, int quote)
{
if (stream->intern->printable_fname
&& !stream->intern->printable_fname_inuse)
{
mem_free (stream->intern->printable_fname);
stream->intern->printable_fname = NULL;
}
if (stream->intern->printable_fname)
return; /* Can't change because it is in use. */
if (*fname != '[')
quote = 0;
else
quote = !!quote;
stream->intern->printable_fname = mem_alloc (strlen (fname) + quote + 1);
if (fname)
{
if (quote)
stream->intern->printable_fname[0] = '\\';
strcpy (stream->intern->printable_fname+quote, fname);
}
}
/* Set the filename attribute of STREAM. There is no error return.
as long as STREAM is valid. This function is called internally by
functions which open a filename. */
void
es_fname_set (estream_t stream, const char *fname)
{
if (fname)
{
ESTREAM_LOCK (stream);
fname_set_internal (stream, fname, 1);
ESTREAM_UNLOCK (stream);
}
}
/* Return the filename attribute of STREAM. In case no filename has
been set, "[?]" will be returned. The returned file name is valid
as long as STREAM is valid. */
const char *
es_fname_get (estream_t stream)
{
const char *fname;
ESTREAM_LOCK (stream);
fname = stream->intern->printable_fname;
if (fname)
stream->intern->printable_fname_inuse = 1;
ESTREAM_UNLOCK (stream);
if (!fname)
fname = "[?]";
return fname;
}
/* Print a BUFFER to STREAM while replacing all control characters and
the characters in DELIMITERS by standard C escape sequences.
Returns 0 on success or -1 on error. If BYTES_WRITTEN is not NULL

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@ -128,6 +128,8 @@
#define es_tmpfile _ESTREAM_PREFIX(es_tmpfile)
#define es_opaque_set _ESTREAM_PREFIX(es_opaque_set)
#define es_opaque_get _ESTREAM_PREFIX(es_opaque_get)
#define es_fname_set _ESTREAM_PREFIX(es_fname_set)
#define es_fname_get _ESTREAM_PREFIX(es_fname_get)
#define es_write_sanitized_utf8_buffer \
_ESTREAM_PREFIX(es_write_sanitized_utf8_buffer)
#endif /*_ESTREAM_EXT_SYM_PREFIX*/
@ -358,6 +360,9 @@ estream_t es_tmpfile (void);
void es_opaque_set (estream_t ES__RESTRICT stream, void *ES__RESTRICT opaque);
void *es_opaque_get (estream_t stream);
void es_fname_set (estream_t stream, const char *fname);
const char *es_fname_get (estream_t stream);
#ifdef GNUPG_MAJOR_VERSION
int es_write_sanitized_utf8_buffer (estream_t stream,

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@ -313,11 +313,22 @@ gnupg_spawn_process (const char *pgmname, const char *argv[],
*statusfile = NULL;
*pid = (pid_t)(-1);
es_fflush (infile);
es_rewind (infile);
fd = es_fileno (infile);
fdout = es_fileno (outfile);
if (fd == -1 || fdout == -1)
if (infile)
{
es_fflush (infile);
es_rewind (infile);
fd = es_fileno (infile);
}
else
fd = -1;
if (outfile)
fdout = es_fileno (outfile);
else
fdout = -1;
if ((infile && fd == -1) || (outfile && fdout == -1))
log_fatal ("no file descriptor for file passed to gnupg_spawn_process\n");
if (pipe (rp) == -1)

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@ -382,17 +382,30 @@ gnupg_spawn_process (const char *pgmname, const char *argv[],
int cr_flags;
char *cmdline;
int fd, fdout, rp[2];
HANDLE nullhd[];
int i;
(void)preexec;
/* Setup return values. */
*statusfile = NULL;
*pid = (pid_t)(-1);
es_fflush (infile);
es_rewind (infile);
fd = _get_osfhandle (es_fileno (infile));
fdout = _get_osfhandle (es_fileno (outfile));
if (fd == -1 || fdout == -1)
if (infile)
{
es_fflush (infile);
es_rewind (infile);
fd = _get_osfhandle (es_fileno (infile));
}
else
fd = -1;
if (outfile)
fdout = _get_osfhandle (es_fileno (outfile));
else
fdout = -1;
if ( (infile && fd == -1) || (outfile && fdout == -1))
log_fatal ("no file descriptor for file passed to gnupg_spawn_process\n");
/* Prepare security attributes. */
@ -414,14 +427,17 @@ gnupg_spawn_process (const char *pgmname, const char *argv[],
return err;
}
nullhd[0] = fd == -1? w32_open_null (0) : INVALID_HANDLE_VALUE;
nullhd[1] = outfd == -1? w32_open_null (1) : INVALID_HANDLE_VALUE;
/* Start the process. Note that we can't run the PREEXEC function
because this would change our own environment. */
memset (&si, 0, sizeof si);
si.cb = sizeof (si);
si.dwFlags = STARTF_USESTDHANDLES | STARTF_USESHOWWINDOW;
si.wShowWindow = DEBUG_W32_SPAWN? SW_SHOW : SW_MINIMIZE;
si.hStdInput = fd_to_handle (fd);
si.hStdOutput = fd_to_handle (fdout);
si.hStdInput = fd == -1? nullhd[0] : fd_to_handle (fd);
si.hStdOutput = outfd == -1? nullhd[1] : fd_to_handle (fdout);
si.hStdError = fd_to_handle (rp[1]);
cr_flags = (CREATE_DEFAULT_ERROR_MODE
@ -450,6 +466,11 @@ gnupg_spawn_process (const char *pgmname, const char *argv[],
xfree (cmdline);
cmdline = NULL;
/* Close the inherited handles to /dev/null. */
for (i=0; i < DIM (nullhd); i++)
if (nullhd[i] != INVALID_HANDLE_VALUE)
CloseHandle (nullhd[i]);
/* Close the other end of the pipe. */
CloseHandle (fd_to_handle (rp[1]));

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@ -501,6 +501,11 @@ gnupg_spawn_process (const char *pgmname, const char *argv[],
*statusfile = NULL;
*pid = (pid_t)(-1);
/* A NULL INFILE or OUTFILE is only used by gpgtar thus we don't
need to implement this for CE. */
if (!infile || !outfile)
return gpg_error (GPG_ERR_NOT_IMPLEMENTED);
es_fflush (infile);
es_rewind (infile);

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@ -53,13 +53,14 @@ gpg_error_t gnupg_create_outbound_pipe (int filedes[2]);
/* Fork and exec the PGMNAME, connect the file descriptor of INFILE to
stdin, write the output to OUTFILE, return a new stream in
STATUSFILE for stderr and the pid of the process in PID. The
arguments for the process are expected in the NULL terminated array
ARGV. The program name itself should not be included there. If
PREEXEC is not NULL, that function will be called right before the
exec. Calling gnupg_wait_process is required. Returns 0 on
success or an error code.
stdin, write the output to OUTFILE. INFILE or PUTFILE may be NULL
to connect thenm to /dev/null. Returns a new stream in STATUSFILE
for stderr and the pid of the process in PID. The arguments for the
process are expected in the NULL terminated array ARGV. The
program name itself should not be included there. If PREEXEC is
not NULL, that function will be called right before the exec.
Calling gnupg_wait_process is required. Returns 0 on success or an
error code.
FLAGS is a bit vector:

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@ -402,7 +402,11 @@ log_get_fd ()
estream_t
log_get_stream ()
{
assert (logstream);
if (!logstream)
{
log_set_file (NULL); /* Make sure a log stream has been set. */
assert (logstream);
}
return logstream;
}

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@ -89,6 +89,7 @@ GNUPG_BUILD_PROGRAM(g13, yes)
GNUPG_BUILD_PROGRAM(tools, yes)
GNUPG_BUILD_PROGRAM(doc, yes)
GNUPG_BUILD_PROGRAM(symcryptrun, no)
GNUPG_BUILD_PROGRAM(gpgtar, no)
AC_SUBST(PACKAGE)
AC_SUBST(PACKAGE_GT)
@ -1156,8 +1157,8 @@ AC_CHECK_FUNCS([strcasecmp strncasecmp ctermid times gmtime_r])
AC_CHECK_FUNCS([unsetenv fcntl ftruncate])
AC_CHECK_FUNCS([gettimeofday getrusage getrlimit setrlimit clock_gettime])
AC_CHECK_FUNCS([atexit raise getpagesize strftime nl_langinfo setlocale])
AC_CHECK_FUNCS([waitpid wait4 sigaction sigprocmask pipe stat getaddrinfo])
AC_CHECK_FUNCS([ttyname rand ftello fsync])
AC_CHECK_FUNCS([waitpid wait4 sigaction sigprocmask pipe getaddrinfo])
AC_CHECK_FUNCS([ttyname rand ftello fsync stat lstat])
AC_CHECK_TYPES([struct sigaction, sigset_t],,,[#include <signal.h>])
@ -1473,6 +1474,7 @@ AM_CONDITIONAL(BUILD_G13, test "$build_g13" = "yes")
AM_CONDITIONAL(BUILD_TOOLS, test "$build_tools" = "yes")
AM_CONDITIONAL(BUILD_DOC, test "$build_doc" = "yes")
AM_CONDITIONAL(BUILD_SYMCRYPTRUN, test "$build_symcryptrun" = "yes")
AM_CONDITIONAL(BUILD_GPGTAR,test "$build_gpgtar" = "yes")
AM_CONDITIONAL(RUN_GPG_TESTS,
test x$cross_compiling = xno -a "$build_gpg" = yes )
@ -1583,6 +1585,7 @@ echo "
Agent: $build_agent $build_agent_threaded
Smartcard: $build_scdaemon $build_scdaemon_extra
G13: $build_g13
Gpgtar: $build_gpgtar
Protect tool: $show_gnupg_protect_tool_pgm
Default agent: $show_gnupg_agent_pgm

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@ -845,7 +845,8 @@ key rings.
@c man:.RS
The listing shows you the key with its secondary keys and all user
ids. Selected keys or user ids are indicated by an asterisk. The trust
ids. The primary user id is indicated by a dot, and selected keys or
user ids are indicated by an asterisk. The trust
value is displayed with the primary key: the first is the assigned owner
trust and the second is the calculated trust value. Letters are used for
the values:

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@ -1,3 +1,10 @@
2010-05-12 Werner Koch <wk@g10code.com>
* armor.c (radix64_read): Extended 2006-04-28 fix to fix bug#1179.
* plaintext.c (handle_plaintext): Check return code of fflush.
Fixes bug#1207.
2010-05-07 Werner Koch <wk@g10code.com>
* import.c (fix_bad_direct_key_sigs): New.

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@ -798,8 +798,9 @@ radix64_read( armor_filter_context_t *afx, IOBUF a, size_t *retn,
goto again;
}
}
else if(n==0)
onlypad=1;
if (!n)
onlypad = 1;
if( idx == 1 )
buf[n++] = val;

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@ -1360,6 +1360,8 @@ generate_card_keys (void)
{
char *answer;
/* FIXME: Should be something like cpr_get_bool so that a status
GET_BOOL will be emitted. */
answer = cpr_get ("cardedit.genkeys.backup_enc",
_("Make off-card backup of encryption key? (Y/n) "));

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@ -448,7 +448,15 @@ handle_plaintext (PKT_plaintext * pt, md_filter_context_t * mfx,
/* Make sure that stdout gets flushed after the plaintext has been
handled. This is for extra security as we do a flush anyway
before checking the signature. */
fflush (stdout);
if (fflush (stdout))
{
/* We need to check the return code to detect errors like disk
full for short plaintexts. See bug#1207. Checking return
values is a good idea in any case. */
if (!rc)
rc = gpg_error_from_syserror ();
log_error ("error flushing `%s': %s\n", "[stdout]", strerror (errno));
}
if (fp && fp != stdout && fp != opt.outfp)
fclose (fp);

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@ -48,7 +48,7 @@ struct runner_s
/* We use a reference counter to know when it is safe to remove the
object. Lackiong an explicit ref fucntion this counter will take
object. Lacking an explicit ref function this counter will take
only these two values:
1 = Thread not running or only the thread is still running.

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@ -1,3 +1,7 @@
2010-05-12 Werner Koch <wk@g10code.com>
* armor.test (Version): Add test for bug#1179.
2010-05-11 Werner Koch <wk@g10code.com>
* genkey1024.test: Use GPG macro.

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@ -185,4 +185,579 @@ $GPG --import x || error "the $i bug is back in town"
nopad_armored_msg='-----BEGIN PGP MESSAGE-----
Version: GnuPG v1.4.11-svn5139 (GNU/Linux)
hQEOA2rm1+5GqHH4EAQAi8xXorNRK4QSZR1os2xtbVeZg5pI0hrdyejn0jSnlWmw
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hQtCMdjgCdh3uMK6rbprGdQ2lh4PAFKd25djBJlf8KBqkJXimAYhe5Y1q/x58xbA
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-----END PGP MESSAGE-----
'
alpha_seckey='-----BEGIN PGP PRIVATE KEY BLOCK-----
Version: GnuPG v1.4.8 (GNU/Linux)
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J0FsZmEgVGVzdCAoZGVtbyBrZXkpIDxhbGZhQGV4YW1wbGUubmV0PohVBBMRAgAV
BQI247hYAwsKAwMVAwIDFgIBAheAAAoJEC1yfMdoaXc0t8IAoJPwa6j+Vm5Vi3Nv
uo8JZri4PJ/DAJ9dqbmaJdB8FdJnHfGh1rXK3y/Jcp0BuAQ2448PEAQAnI3XH1f0
uyN9fZnw72zsHMw706g7EW29nD4UDQG4OzRZViSrUa5n39eI7QrfTO+1meVvs0y8
F/PvFst5jH68rPLnGSrXz4sTl1T4cop1FBkquvCAKwPLy0lE7jjtCyItOSwIOo8x
oTfY4JEEXmcqsbm+KHv9yYSF/YK4Cf7bIzcAAwcD/Rnl5jKxoucDA96pD2829TKs
LFQSau+Xiy8bvOSSDdlyABsOkNBSaeKO3eAQEKgDM7dzjVNTnAlpQ0EQ8Y9Z8pxO
WYEQYlaMrnRBC4DZ2IadzEhLlIOz5BVp/jfhrr8oVVBwKZXsrz9PZLz+e4Yn+siU
Uvlei9boD9L2ZgSOHakP/gIDApwXVB6n49+yw6e5k2VJBGTFDkQbxpgi4oslePpT
7Tc2qjAke4zO8JHkgKSokEgnMpMz412q9otFX/3qC5MpPG5P8f4r00Kfy9Am/thk
ri01WTIUqF8L/VZXJxLKVoRAabSXudG0eavfah14fN5/+Bw5i8vSHhc/xmQEKTya
2X8Nt1F5zMrE1LAGVVCL9i/DUygnJYOZzAd1Ct0RJ4kFj7lOBICF2IWWiEYEGBEC
AAYFAjbjjw8ACgkQLXJ8x2hpdzQgqQCgn81AaW8W/lyVwMh/UBeMuVMUb24An2uz
wg7Md81a5RI3F2FG8747t9gX
=VM1e
-----END PGP PRIVATE KEY BLOCK-----
'
# Bug 1179 solved 2010-05-12:
# It occured for messages of a multiple of the iobuf block size where
# the last line had no pad character. Due to premature poppng of thea
# rmor filter gpg swalled the CRC line and passed the '-----END...'
# line on to the decryption layer.
i=alpha_seckey
info "importing: $i"
eval "(IFS=; echo \"\$$i\")" >x
$GPG --import x || true
i=nopad_armored_msg
info "checking: $i"
eval "(IFS=; echo \"\$$i\")" >x
if $GPG -o - x > /dev/null ; then
:
else
error "bug#1179 is back in town"
fi

View File

@ -1,3 +1,11 @@
2010-06-07 Werner Koch <wk@g10code.com>
* gpgtar.c, gpgtar.h, gpgtar-list.c, gpgtar-create.c
* gpgtar-extract.c: New.
* Makefile.am (commonpth_libs): New.
(gpgtar_SOURCES, gpgtar_CFLAGS, gpgtar_LDADD): New.
(bin_PROGRAMS) [!W32CE]: Add gpgtar.
2010-04-20 Marcus Brinkmann <marcus@g10code.de>
* gpgconf-comp.c (option_check_validity): Use dummy variables to
@ -1104,7 +1112,7 @@
Copyright 2003, 2004, 2005, 2006, 2007, 2008,
2009 Free Software Foundation, Inc.
2009, 2010 Free Software Foundation, Inc.
This file is free software; as a special exception the author gives
unlimited permission to copy and/or distribute it, with or without

View File

@ -42,13 +42,19 @@ else
symcryptrun =
endif
if BUILD_GPGTAR
gpgtar = gpgtar
else
gpgtar =
endif
# Fixme: We should remove the gpgkey2ssh tool.
bin_PROGRAMS = gpgconf gpg-connect-agent ${symcryptrun}
if !HAVE_W32_SYSTEM
bin_PROGRAMS += watchgnupg gpgparsemail
endif
if !HAVE_W32CE_SYSTEM
bin_PROGRAMS += gpgkey2ssh
bin_PROGRAMS += gpgkey2ssh ${gpgtar}
endif
if !DISABLE_REGEX
@ -60,6 +66,7 @@ noinst_PROGRAMS = clean-sat mk-tdata make-dns-cert gpgsplit
endif
common_libs = $(libcommon) ../gl/libgnu.a
commonpth_libs = $(libcommonpth) ../gl/libgnu.a
if HAVE_W32CE_SYSTEM
pwquery_libs =
else
@ -114,14 +121,15 @@ gpg_check_pattern_LDADD = $(common_libs) $(LIBGCRYPT_LIBS) $(GPG_ERROR_LIBS) \
$(LIBINTL) $(LIBICONV) $(W32SOCKLIBS)
endif
#gpgtar_SOURCES = \
# gpgtar.c gpgtar.h \
# gpgtar-create.c \
# gpgtar-extract.c \
# gpgtar-list.c \
# no-libgcrypt.c
#gpgtar_LDADD = $(common_libs)
#
gpgtar_SOURCES = \
gpgtar.c gpgtar.h \
gpgtar-create.c \
gpgtar-extract.c \
gpgtar-list.c \
no-libgcrypt.c
gpgtar_CFLAGS = $(GPG_ERROR_CFLAGS) $(PTH_CFLAGS)
gpgtar_LDADD = $(commonpth_libs) $(PTH_LIBS) $(GPG_ERROR_LIBS)
# Make sure that all libs are build before we use them. This is
# important for things like make -j2.

643
tools/gpgtar-create.c Normal file
View File

@ -0,0 +1,643 @@
/* gpgtar-create.c - Create a TAR archive
* Copyright (C) 2010 Free Software Foundation, Inc.
*
* This file is part of GnuPG.
*
* GnuPG is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* GnuPG is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#include <config.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <dirent.h>
/* #ifdef HAVE_W32_SYSTEM */
/* # define WIN32_LEAN_AND_MEAN */
/* # include <windows.h> */
/* #else /\*!HAVE_W32_SYSTEM*\/ */
# include <unistd.h>
# include <pwd.h>
# include <grp.h>
/* #endif /\*!HAVE_W32_SYSTEM*\/ */
#include <assert.h>
#include "i18n.h"
#include "../common/sysutils.h"
#include "gpgtar.h"
#ifndef HAVE_LSTAT
#define lstat(a,b) stat ((a), (b))
#endif
/* Object to control the file scanning. */
struct scanctrl_s;
typedef struct scanctrl_s *scanctrl_t;
struct scanctrl_s
{
tar_header_t flist;
tar_header_t *flist_tail;
int nestlevel;
};
/* Given a fresh header object HDR with only the name field set, try
to gather all available info. */
static gpg_error_t
fillup_entry (tar_header_t hdr)
{
gpg_error_t err;
struct stat sbuf;
if (lstat (hdr->name, &sbuf))
{
err = gpg_error_from_syserror ();
log_error ("error stat-ing `%s': %s\n", hdr->name, gpg_strerror (err));
return err;
}
if (S_ISREG (sbuf.st_mode))
hdr->typeflag = TF_REGULAR;
else if (S_ISDIR (sbuf.st_mode))
hdr->typeflag = TF_DIRECTORY;
else if (S_ISCHR (sbuf.st_mode))
hdr->typeflag = TF_CHARDEV;
else if (S_ISBLK (sbuf.st_mode))
hdr->typeflag = TF_BLOCKDEV;
else if (S_ISFIFO (sbuf.st_mode))
hdr->typeflag = TF_FIFO;
else if (S_ISLNK (sbuf.st_mode))
hdr->typeflag = TF_SYMLINK;
else
hdr->typeflag = TF_NOTSUP;
/* FIXME: Save DEV and INO? */
/* Set the USTAR defined mode bits using the system macros. */
if (sbuf.st_mode & S_IRUSR)
hdr->mode |= 0400;
if (sbuf.st_mode & S_IWUSR)
hdr->mode |= 0200;
if (sbuf.st_mode & S_IXUSR)
hdr->mode |= 0100;
if (sbuf.st_mode & S_IRGRP)
hdr->mode |= 0040;
if (sbuf.st_mode & S_IWGRP)
hdr->mode |= 0020;
if (sbuf.st_mode & S_IXGRP)
hdr->mode |= 0010;
if (sbuf.st_mode & S_IROTH)
hdr->mode |= 0004;
if (sbuf.st_mode & S_IWOTH)
hdr->mode |= 0002;
if (sbuf.st_mode & S_IXOTH)
hdr->mode |= 0001;
#ifdef S_IXUID
if (sbuf.st_mode & S_IXUID)
hdr->mode |= 04000;
#endif
#ifdef S_IXGID
if (sbuf.st_mode & S_IXGID)
hdr->mode |= 02000;
#endif
#ifdef S_ISVTX
if (sbuf.st_mode & S_ISVTX)
hdr->mode |= 01000;
#endif
hdr->nlink = sbuf.st_nlink;
hdr->uid = sbuf.st_uid;
hdr->gid = sbuf.st_gid;
/* Only set the size for a regular file. */
if (hdr->typeflag == TF_REGULAR)
hdr->size = sbuf.st_size;
hdr->mtime = sbuf.st_mtime;
return 0;
}
static gpg_error_t
add_entry (const char *dname, size_t dnamelen, struct dirent *de,
scanctrl_t scanctrl)
{
gpg_error_t err;
tar_header_t hdr;
char *p;
assert (dnamelen);
hdr = xtrycalloc (1, sizeof *hdr + dnamelen + 1
+ (de? strlen (de->d_name) : 0));
if (!hdr)
{
err = gpg_error_from_syserror ();
log_error (_("error reading directory `%s': %s\n"),
dname, gpg_strerror (err));
return err;
}
p = stpcpy (hdr->name, dname);
if (de)
{
if (dname[dnamelen-1] != '/')
*p++ = '/';
strcpy (p, de->d_name);
}
else
{
if (hdr->name[dnamelen-1] == '/')
hdr->name[dnamelen-1] = 0;
}
#ifdef HAVE_DOSISH_SYSTEM
for (p=hdr->name; *p; p++)
if (*p == '\\')
*p = '/';
#endif
err = fillup_entry (hdr);
if (err)
xfree (hdr);
else
{
if (opt.verbose)
gpgtar_print_header (hdr, log_get_stream ());
*scanctrl->flist_tail = hdr;
scanctrl->flist_tail = &hdr->next;
}
return 0;
}
static gpg_error_t
scan_directory (const char *dname, scanctrl_t scanctrl)
{
gpg_error_t err = 0;
size_t dnamelen;
DIR *dir;
struct dirent *de;
dnamelen = strlen (dname);
if (!dnamelen)
return 0; /* An empty directory name has no entries. */
dir = opendir (dname);
if (!dir)
{
err = gpg_error_from_syserror ();
log_error (_("error reading directory `%s': %s\n"),
dname, gpg_strerror (err));
return err;
}
while ((de = readdir (dir)))
{
if (!strcmp (de->d_name, "." ) || !strcmp (de->d_name, ".."))
continue; /* Skip self and parent dir entry. */
err = add_entry (dname, dnamelen, de, scanctrl);
if (err)
goto leave;
}
leave:
closedir (dir);
return err;
}
static gpg_error_t
scan_recursive (const char *dname, scanctrl_t scanctrl)
{
gpg_error_t err = 0;
tar_header_t hdr, *start_tail, *stop_tail;
if (scanctrl->nestlevel > 200)
{
log_error ("directories too deeply nested\n");
return gpg_error (GPG_ERR_RESOURCE_LIMIT);
}
scanctrl->nestlevel++;
assert (scanctrl->flist_tail);
start_tail = scanctrl->flist_tail;
scan_directory (dname, scanctrl);
stop_tail = scanctrl->flist_tail;
hdr = *start_tail;
for (; hdr && hdr != *stop_tail; hdr = hdr->next)
if (hdr->typeflag == TF_DIRECTORY)
{
if (opt.verbose > 1)
log_info ("scanning directory `%s'\n", hdr->name);
scan_recursive (hdr->name, scanctrl);
}
scanctrl->nestlevel--;
return err;
}
/* Returns true if PATTERN is acceptable. */
static int
pattern_valid_p (const char *pattern)
{
if (!*pattern)
return 0;
if (*pattern == '.' && pattern[1] == '.')
return 0;
if (*pattern == '/' || *pattern == DIRSEP_C)
return 0; /* Absolute filenames are not supported. */
#ifdef HAVE_DRIVE_LETTERS
if (((*pattern >= 'a' && *pattern <= 'z')
|| (*pattern >= 'A' && *pattern <= 'Z'))
&& pattern[1] == ':')
return 0; /* Drive letter are not allowed either. */
#endif /*HAVE_DRIVE_LETTERS*/
return 1; /* Okay. */
}
static void
store_xoctal (char *buffer, size_t length, unsigned long long value)
{
char *p, *pend;
size_t n;
unsigned long long v;
assert (length > 1);
v = value;
n = length;
p = pend = buffer + length;
*--p = 0; /* Nul byte. */
n--;
do
{
*--p = '0' + (v % 8);
v /= 8;
n--;
}
while (v && n);
if (!v)
{
/* Pad. */
for ( ; n; n--)
*--p = '0';
}
else /* Does not fit into the field. Store as binary number. */
{
v = value;
n = length;
p = pend = buffer + length;
do
{
*--p = v;
v /= 256;
n--;
}
while (v && n);
if (!v)
{
/* Pad. */
for ( ; n; n--)
*--p = 0;
if (*p & 0x80)
BUG ();
*p |= 0x80; /* Set binary flag. */
}
else
BUG ();
}
}
static void
store_uname (char *buffer, size_t length, unsigned long uid)
{
static int initialized;
static unsigned long lastuid;
static char lastuname[32];
if (!initialized || uid != lastuid)
{
struct passwd *pw = getpwuid (uid);
lastuid = uid;
initialized = 1;
if (pw)
mem2str (lastuname, pw->pw_name, sizeof lastuname);
else
{
log_info ("failed to get name for uid %lu\n", uid);
*lastuname = 0;
}
}
mem2str (buffer, lastuname, length);
}
static void
store_gname (char *buffer, size_t length, unsigned long gid)
{
static int initialized;
static unsigned long lastgid;
static char lastgname[32];
if (!initialized || gid != lastgid)
{
struct group *gr = getgrgid (gid);
lastgid = gid;
initialized = 1;
if (gr)
mem2str (lastgname, gr->gr_name, sizeof lastgname);
else
{
log_info ("failed to get name for gid %lu\n", gid);
*lastgname = 0;
}
}
mem2str (buffer, lastgname, length);
}
static gpg_error_t
build_header (void *record, tar_header_t hdr)
{
gpg_error_t err;
struct ustar_raw_header *raw = record;
size_t namelen, n;
unsigned long chksum;
unsigned char *p;
memset (record, 0, RECORDSIZE);
/* Store name and prefix. */
namelen = strlen (hdr->name);
if (namelen < sizeof raw->name)
memcpy (raw->name, hdr->name, namelen);
else
{
n = (namelen < sizeof raw->prefix)? namelen : sizeof raw->prefix;
for (n--; n ; n--)
if (hdr->name[n] == '/')
break;
if (namelen - n < sizeof raw->name)
{
/* Note that the N is < sizeof prefix and that the
delimiting slash is not stored. */
memcpy (raw->prefix, hdr->name, n);
memcpy (raw->name, hdr->name+n+1, namelen - n);
}
else
{
err = gpg_error (GPG_ERR_TOO_LARGE);
log_error ("error storing file `%s': %s\n",
hdr->name, gpg_strerror (err));
return err;
}
}
store_xoctal (raw->mode, sizeof raw->mode, hdr->mode);
store_xoctal (raw->uid, sizeof raw->uid, hdr->uid);
store_xoctal (raw->gid, sizeof raw->gid, hdr->gid);
store_xoctal (raw->size, sizeof raw->size, hdr->size);
store_xoctal (raw->mtime, sizeof raw->mtime, hdr->mtime);
switch (hdr->typeflag)
{
case TF_REGULAR: raw->typeflag[0] = '0'; break;
case TF_HARDLINK: raw->typeflag[0] = '1'; break;
case TF_SYMLINK: raw->typeflag[0] = '2'; break;
case TF_CHARDEV: raw->typeflag[0] = '3'; break;
case TF_BLOCKDEV: raw->typeflag[0] = '4'; break;
case TF_DIRECTORY: raw->typeflag[0] = '5'; break;
case TF_FIFO: raw->typeflag[0] = '6'; break;
default: return gpg_error (GPG_ERR_NOT_SUPPORTED);
}
memcpy (raw->magic, "ustar", 6);
raw->version[0] = '0';
raw->version[1] = '0';
store_uname (raw->uname, sizeof raw->uname, hdr->uid);
store_gname (raw->gname, sizeof raw->gname, hdr->gid);
if (hdr->typeflag == TF_SYMLINK)
{
int nread;
nread = readlink (hdr->name, raw->linkname, sizeof raw->linkname -1);
if (nread < 0)
{
err = gpg_error_from_syserror ();
log_error ("error reading symlink `%s': %s\n",
hdr->name, gpg_strerror (err));
return err;
}
raw->linkname[nread] = 0;
}
/* Compute the checksum. */
memset (raw->checksum, ' ', sizeof raw->checksum);
chksum = 0;
p = record;
for (n=0; n < RECORDSIZE; n++)
chksum += *p++;
store_xoctal (raw->checksum, sizeof raw->checksum - 1, chksum);
raw->checksum[7] = ' ';
return 0;
}
static gpg_error_t
write_file (estream_t stream, tar_header_t hdr)
{
gpg_error_t err;
char record[RECORDSIZE];
estream_t infp;
size_t nread, nbytes;
int any;
err = build_header (record, hdr);
if (err)
{
if (gpg_err_code (err) == GPG_ERR_NOT_SUPPORTED)
{
log_info ("skipping unsupported file `%s'\n", hdr->name);
err = 0;
}
return err;
}
if (hdr->typeflag == TF_REGULAR)
{
infp = es_fopen (hdr->name, "rb");
if (!infp)
{
err = gpg_error_from_syserror ();
log_error ("can't open `%s': %s - skipped\n",
hdr->name, gpg_strerror (err));
return err;
}
}
else
infp = NULL;
err = write_record (stream, record);
if (err)
goto leave;
if (hdr->typeflag == TF_REGULAR)
{
hdr->nrecords = (hdr->size + RECORDSIZE-1)/RECORDSIZE;
any = 0;
while (hdr->nrecords--)
{
nbytes = hdr->nrecords? RECORDSIZE : (hdr->size % RECORDSIZE);
nread = es_fread (record, 1, nbytes, infp);
if (nread != nbytes)
{
err = gpg_error_from_syserror ();
log_error ("error reading file `%s': %s%s\n",
hdr->name, gpg_strerror (err),
any? " (file shrunk?)":"");
goto leave;
}
any = 1;
err = write_record (stream, record);
if (err)
goto leave;
}
nread = es_fread (record, 1, 1, infp);
if (nread)
log_info ("note: file `%s' has grown\n", hdr->name);
}
leave:
if (err)
es_fclose (infp);
else if ((err = es_fclose (infp)))
log_error ("error closing file `%s': %s\n", hdr->name, gpg_strerror (err));
return err;
}
static gpg_error_t
write_eof_mark (estream_t stream)
{
gpg_error_t err;
char record[RECORDSIZE];
memset (record, 0, sizeof record);
err = write_record (stream, record);
if (!err)
err = write_record (stream, record);
return err;
}
void
gpgtar_create (char **inpattern)
{
gpg_error_t err = 0;
const char *pattern;
struct scanctrl_s scanctrl_buffer;
scanctrl_t scanctrl = &scanctrl_buffer;
tar_header_t hdr, *start_tail;
estream_t outstream;
memset (scanctrl, 0, sizeof *scanctrl);
scanctrl->flist_tail = &scanctrl->flist;
for (; (pattern = *inpattern); inpattern++)
{
if (!*pattern)
continue;
if (opt.verbose > 1)
log_info ("scanning `%s'\n", pattern);
start_tail = scanctrl->flist_tail;
if (!pattern_valid_p (pattern))
log_error ("skipping invalid name `%s'\n", pattern);
else if (!add_entry (pattern, strlen (pattern), NULL, scanctrl)
&& *start_tail && ((*start_tail)->typeflag & TF_DIRECTORY))
scan_recursive (pattern, scanctrl);
}
if (opt.outfile)
{
outstream = es_fopen (opt.outfile, "wb");
if (!outstream)
{
err = gpg_error_from_syserror ();
log_error (_("can't create `%s': %s\n"),
opt.outfile, gpg_strerror (err));
goto leave;
}
}
else
{
outstream = es_stdout;
}
for (hdr = scanctrl->flist; hdr; hdr = hdr->next)
{
err = write_file (outstream, hdr);
if (err)
goto leave;
}
err = write_eof_mark (outstream);
leave:
if (!err)
{
if (outstream != es_stdout)
err = es_fclose (outstream);
else
err = es_fflush (outstream);
outstream = NULL;
}
if (err)
{
log_error ("creating tarball `%s' failed: %s\n",
es_fname_get (outstream), gpg_strerror (err));
if (outstream && outstream != es_stdout)
es_fclose (outstream);
if (opt.outfile)
gnupg_remove (opt.outfile);
}
scanctrl->flist_tail = NULL;
while ( (hdr = scanctrl->flist) )
{
scanctrl->flist = hdr->next;
xfree (hdr);
}
}

266
tools/gpgtar-extract.c Normal file
View File

@ -0,0 +1,266 @@
/* gpgtar-extract.c - Extract from a TAR archive
* Copyright (C) 2010 Free Software Foundation, Inc.
*
* This file is part of GnuPG.
*
* GnuPG is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* GnuPG is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#include <config.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <assert.h>
#include "i18n.h"
#include "../common/sysutils.h"
#include "gpgtar.h"
static gpg_error_t
extract_regular (estream_t stream, const char *dirname,
tar_header_t hdr)
{
gpg_error_t err;
char record[RECORDSIZE];
size_t n, nbytes, nwritten;
char *fname;
estream_t outfp = NULL;
fname = strconcat (dirname, "/", hdr->name, NULL);
if (!fname)
{
err = gpg_error_from_syserror ();
log_error ("error creating filename: %s\n", gpg_strerror (err));
goto leave;
}
else
err = 0;
outfp = es_fopen (fname, "wb");
if (!outfp)
{
err = gpg_error_from_syserror ();
log_error ("error creating `%s': %s\n", fname, gpg_strerror (err));
goto leave;
}
for (n=0; n < hdr->nrecords;)
{
err = read_record (stream, record);
if (err)
goto leave;
n++;
nbytes = (n < hdr->nrecords)? RECORDSIZE : (hdr->size % RECORDSIZE);
nwritten = es_fwrite (record, 1, nbytes, outfp);
if (nwritten != nbytes)
{
err = gpg_error_from_syserror ();
log_error ("error writing `%s': %s\n", fname, gpg_strerror (err));
goto leave;
}
}
/* Fixme: Set permissions etc. */
leave:
es_fclose (outfp);
if (err && fname && outfp)
{
if (gnupg_remove (fname))
log_error ("error removing incomplete file `%s': %s\n",
fname, gpg_strerror (gpg_error_from_syserror ()));
}
xfree (fname);
return err;
}
static gpg_error_t
extract_directory (const char *dirname, tar_header_t hdr)
{
gpg_error_t err;
char *fname;
fname = strconcat (dirname, "/", hdr->name, NULL);
if (!fname)
{
err = gpg_error_from_syserror ();
log_error ("error creating filename: %s\n", gpg_strerror (err));
goto leave;
}
else
err = 0;
if (gnupg_mkdir (fname, "-rwx------"))
{
err = gpg_error_from_syserror ();
log_error ("error creating directory `%s': %s\n",
fname, gpg_strerror (err));
}
leave:
xfree (fname);
return err;
}
static gpg_error_t
extract (estream_t stream, const char *dirname, tar_header_t hdr)
{
gpg_error_t err;
size_t n;
n = strlen (hdr->name);
#ifdef HAVE_DOSISH_SYSTEM
if (strchr (hdr->name, '\\'))
{
log_error ("filename `%s' contains a backslash - "
"can't extract on this system\n", hdr->name);
return gpg_error (GPG_ERR_INV_NAME);
}
#endif /*HAVE_DOSISH_SYSTEM*/
if (!n
|| strstr (hdr->name, "//")
|| strstr (hdr->name, "/../")
|| !strncmp (hdr->name, "../", 3)
|| (n >= 3 && !strcmp (hdr->name+n-3, "/.." )))
{
log_error ("filename `%s' as suspicious parts - not extracting\n",
hdr->name);
return gpg_error (GPG_ERR_INV_NAME);
}
if (hdr->typeflag == TF_REGULAR || hdr->typeflag == TF_UNKNOWN)
err = extract_regular (stream, dirname, hdr);
else if (hdr->typeflag == TF_DIRECTORY)
err = extract_directory (dirname, hdr);
else
{
char record[RECORDSIZE];
log_info ("unsupported file type for `%s' - skipped\n", hdr->name);
for (err = 0, n=0; !err && n < hdr->nrecords; n++)
err = read_record (stream, record);
}
return err;
}
/* Create a new directory to be used for extracting the tarball.
Returns the name of the directory which must be freed by the
caller. In case of an error a diagnostic is printed and NULL
returned. */
static char *
create_directory (const char *dirprefix)
{
gpg_error_t err = 0;
char *dirname = NULL;
int idx;
for (idx=1; idx < 5000; idx++)
{
xfree (dirname);
dirname = xtryasprintf ("%s_%d_", dirprefix, idx);
if (!dirname)
{
err = gpg_error_from_syserror ();
goto leave;
}
if (!gnupg_mkdir (dirname, "-rwx------"))
goto leave;
if (errno != EEXIST && errno != ENOTDIR)
{
err = gpg_error_from_syserror ();
goto leave;
}
}
err = gpg_error_from_syserror ();
leave:
if (err)
{
log_error ("error creating an extract directory: %s\n",
gpg_strerror (err));
xfree (dirname);
dirname = NULL;
}
return dirname;
}
void
gpgtar_extract (const char *filename)
{
gpg_error_t err;
estream_t stream;
tar_header_t header = NULL;
const char *dirprefix = NULL;
char *dirname = NULL;
if (filename)
{
dirprefix = strrchr (filename, '/');
if (dirprefix)
dirprefix++;
stream = es_fopen (filename, "rb");
if (!stream)
{
err = gpg_error_from_syserror ();
log_error ("error opening `%s': %s\n", filename, gpg_strerror (err));
return;
}
}
else
stream = es_stdin; /* FIXME: How can we enforce binary mode? */
if (!dirprefix || !*dirprefix)
dirprefix = "GPGARCH";
dirname = create_directory (dirprefix);
if (!dirname)
{
err = gpg_error (GPG_ERR_GENERAL);
goto leave;
}
if (opt.verbose)
log_info ("extracting to `%s/'\n", dirname);
for (;;)
{
header = gpgtar_read_header (stream);
if (!header)
goto leave;
if (extract (stream, dirname, header))
goto leave;
xfree (header);
header = NULL;
}
leave:
xfree (header);
xfree (dirname);
if (stream != es_stdin)
es_fclose (stream);
return;
}

324
tools/gpgtar-list.c Normal file
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@ -0,0 +1,324 @@
/* gpgtar-list.c - List a TAR archive
* Copyright (C) 2010 Free Software Foundation, Inc.
*
* This file is part of GnuPG.
*
* GnuPG is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* GnuPG is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#include <config.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include "i18n.h"
#include "gpgtar.h"
static unsigned long long
parse_xoctal (const void *data, size_t length, const char *filename)
{
const unsigned char *p = data;
unsigned long long value;
if (!length)
value = 0;
else if ( (*p & 0x80))
{
/* Binary format. */
value = (*p++ & 0x7f);
while (--length)
{
value <<= 8;
value |= *p++;
}
}
else
{
/* Octal format */
value = 0;
/* Skip leading spaces and zeroes. */
for (; length && (*p == ' ' || *p == '0'); length--, p++)
;
for (; length && *p; length--, p++)
{
if (*p >= '0' && *p <= '7')
{
value <<= 3;
value += (*p - '0');
}
else
{
log_error ("%s: invalid octal number encountered - assuming 0\n",
filename);
value = 0;
break;
}
}
}
return value;
}
static tar_header_t
parse_header (const void *record, const char *filename)
{
const struct ustar_raw_header *raw = record;
size_t n, namelen, prefixlen;
tar_header_t header;
int use_prefix;
use_prefix = (!memcmp (raw->magic, "ustar", 5)
&& (raw->magic[5] == ' ' || !raw->magic[5]));
for (namelen=0; namelen < sizeof raw->name && raw->name[namelen]; namelen++)
;
if (namelen == sizeof raw->name)
log_info ("%s: warning: name not terminated by a nul byte\n",
filename);
for (n=namelen+1; n < sizeof raw->name; n++)
if (raw->name[n])
{
log_info ("%s: warning: garbage after name\n", filename);
break;
}
if (use_prefix && raw->prefix[0])
{
for (prefixlen=0; (prefixlen < sizeof raw->prefix
&& raw->prefix[prefixlen]); prefixlen++)
;
if (prefixlen == sizeof raw->prefix)
log_info ("%s: warning: prefix not terminated by a nul byte\n",
filename);
for (n=prefixlen+1; n < sizeof raw->prefix; n++)
if (raw->prefix[n])
{
log_info ("%s: warning: garbage after prefix\n", filename);
break;
}
}
else
prefixlen = 0;
header = xtrycalloc (1, sizeof *header + prefixlen + 1 + namelen);
if (!header)
{
log_error ("%s: error allocating header: %s\n",
filename, gpg_strerror (gpg_error_from_syserror ()));
return NULL;
}
if (prefixlen)
{
n = prefixlen;
memcpy (header->name, raw->prefix, n);
if (raw->prefix[n-1] != '/')
header->name[n++] = '/';
}
else
n = 0;
memcpy (header->name+n, raw->name, namelen);
header->name[n+namelen] = 0;
header->mode = parse_xoctal (raw->mode, sizeof raw->mode, filename);
header->uid = parse_xoctal (raw->uid, sizeof raw->uid, filename);
header->gid = parse_xoctal (raw->gid, sizeof raw->gid, filename);
header->size = parse_xoctal (raw->size, sizeof raw->size, filename);
header->mtime = parse_xoctal (raw->mtime, sizeof raw->mtime, filename);
/* checksum = */
switch (raw->typeflag[0])
{
case '0': header->typeflag = TF_REGULAR; break;
case '1': header->typeflag = TF_HARDLINK; break;
case '2': header->typeflag = TF_SYMLINK; break;
case '3': header->typeflag = TF_CHARDEV; break;
case '4': header->typeflag = TF_BLOCKDEV; break;
case '5': header->typeflag = TF_DIRECTORY; break;
case '6': header->typeflag = TF_FIFO; break;
case '7': header->typeflag = TF_RESERVED; break;
default: header->typeflag = TF_UNKNOWN; break;
}
/* Compute the number of data records following this header. */
if (header->typeflag == TF_REGULAR || header->typeflag == TF_UNKNOWN)
header->nrecords = (header->size + RECORDSIZE-1)/RECORDSIZE;
else
header->nrecords = 0;
return header;
}
/* Read the next block, assming it is a tar header. Returns a header
object on success or NULL one error. In case of an error an error
message has been printed. */
static tar_header_t
read_header (estream_t stream)
{
gpg_error_t err;
char record[RECORDSIZE];
int i;
err = read_record (stream, record);
if (err)
return NULL;
for (i=0; i < RECORDSIZE && !record[i]; i++)
;
if (i == RECORDSIZE)
{
/* All zero header - check whether it is the first part of an
end of archive mark. */
err = read_record (stream, record);
if (err)
return NULL;
for (i=0; i < RECORDSIZE && !record[i]; i++)
;
if (i != RECORDSIZE)
log_info ("%s: warning: skipping empty header\n",
es_fname_get (stream));
else
{
/* End of archive - FIXME: we might want to check for garbage. */
return NULL;
}
}
return parse_header (record, es_fname_get (stream));
}
/* Skip the data records according to HEADER. Prints an error message
on error and return -1. */
static int
skip_data (estream_t stream, tar_header_t header)
{
char record[RECORDSIZE];
unsigned long long n;
for (n=0; n < header->nrecords; n++)
{
if (read_record (stream, record))
return -1;
}
return 0;
}
static void
print_header (tar_header_t header, estream_t out)
{
unsigned long mask;
char modestr[10+1];
int i;
*modestr = '?';
switch (header->typeflag)
{
case TF_REGULAR: *modestr = '-'; break;
case TF_HARDLINK: *modestr = 'h'; break;
case TF_SYMLINK: *modestr = 'l'; break;
case TF_CHARDEV: *modestr = 'c'; break;
case TF_BLOCKDEV: *modestr = 'b'; break;
case TF_DIRECTORY:*modestr = 'd'; break;
case TF_FIFO: *modestr = 'f'; break;
case TF_RESERVED: *modestr = '='; break;
case TF_UNKNOWN: break;
case TF_NOTSUP: break;
}
for (mask = 0400, i = 0; i < 9; i++, mask >>= 1)
modestr[1+i] = (header->mode & mask)? "rwxrwxrwx"[i]:'-';
if ((header->typeflag & 04000))
modestr[3] = modestr[3] == 'x'? 's':'S';
if ((header->typeflag & 02000))
modestr[6] = modestr[6] == 'x'? 's':'S';
if ((header->typeflag & 01000))
modestr[9] = modestr[9] == 'x'? 't':'T';
modestr[10] = 0;
es_fprintf (out, "%s %lu %lu/%lu %12llu %s %s\n",
modestr, header->nlink, header->uid, header->gid, header->size,
isotimestamp (header->mtime), header->name);
}
/* List the tarball FILENAME or, if FILENAME is NULL, the tarball read
from stdin. */
void
gpgtar_list (const char *filename)
{
gpg_error_t err;
estream_t stream;
tar_header_t header;
if (filename)
{
stream = es_fopen (filename, "rb");
if (!stream)
{
err = gpg_error_from_syserror ();
log_error ("error opening `%s': %s\n", filename, gpg_strerror (err));
return;
}
}
else
stream = es_stdin; /* FIXME: How can we enforce binary mode? */
for (;;)
{
header = read_header (stream);
if (!header)
goto leave;
print_header (header, es_stdout);
if (skip_data (stream, header))
goto leave;
xfree (header);
header = NULL;
}
leave:
xfree (header);
if (filename)
es_fclose (stream);
return;
}
tar_header_t
gpgtar_read_header (estream_t stream)
{
/*FIXME: Change to return an error code. */
return read_header (stream);
}
void
gpgtar_print_header (tar_header_t header, estream_t out)
{
if (header && out)
print_header (header, out);
}

361
tools/gpgtar.c Normal file
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@ -0,0 +1,361 @@
/* gpgtar.c - A simple TAR implementation mainly useful for Windows.
* Copyright (C) 2010 Free Software Foundation, Inc.
*
* This file is part of GnuPG.
*
* GnuPG is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* GnuPG is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
/* GnuPG comes with a shell script gpg-zip which creates archive files
in the same format as PGP Zip, which is actually a USTAR format.
That is fine and works nicely on all Unices but for Windows we
don't have a compatible shell and the supply of tar programs is
limited. Given that we need just a few tar option and it is an
open question how many Unix concepts are to be mapped to Windows,
we might as well write our own little tar customized for use with
gpg. So here we go. */
#include <config.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include "util.h"
#include "i18n.h"
#include "sysutils.h"
#include "../common/openpgpdefs.h"
#include "gpgtar.h"
/* Constants to identify the commands and options. */
enum cmd_and_opt_values
{
aNull = 0,
aEncrypt = 'e',
aDecrypt = 'd',
aSign = 's',
oSymmetric = 'c',
oRecipient = 'r',
oUser = 'u',
oOutput = 'o',
oQuiet = 'q',
oVerbose = 'v',
oNoVerbose = 500,
aSignEncrypt,
oSkipCrypto,
aList
};
/* The list of commands and options. */
static ARGPARSE_OPTS opts[] = {
ARGPARSE_group (300, N_("@Commands:\n ")),
ARGPARSE_c (aEncrypt, "encrypt", N_("create an archive")),
ARGPARSE_c (aDecrypt, "decrypt", N_("extract an archive")),
ARGPARSE_c (aSign, "sign", N_("create a signed archive")),
ARGPARSE_c (aList, "list-archive", N_("list an archive")),
ARGPARSE_group (301, N_("@\nOptions:\n ")),
ARGPARSE_s_n (oSymmetric, "symmetric", N_("use symmetric encryption")),
ARGPARSE_s_s (oRecipient, "recipient", N_("|USER-ID|encrypt for USER-ID")),
ARGPARSE_s_s (oUser, "local-user",
N_("|USER-ID|use USER-ID to sign or decrypt")),
ARGPARSE_s_s (oOutput, "output", N_("|FILE|write output to FILE")),
ARGPARSE_s_n (oVerbose, "verbose", N_("verbose")),
ARGPARSE_s_n (oQuiet, "quiet", N_("be somewhat more quiet")),
ARGPARSE_s_n (oSkipCrypto, "skip-crypto", N_("skip the crypto processing")),
ARGPARSE_end ()
};
static void tar_and_encrypt (char **inpattern);
static void decrypt_and_untar (const char *fname);
static void decrypt_and_list (const char *fname);
/* Print usage information and and provide strings for help. */
static const char *
my_strusage( int level )
{
const char *p;
switch (level)
{
case 11: p = "gpgtar (GnuPG)";
break;
case 13: p = VERSION; break;
case 17: p = PRINTABLE_OS_NAME; break;
case 19: p = _("Please report bugs to <@EMAIL@>.\n"); break;
case 1:
case 40:
p = _("Usage: gpgtar [options] [files] [directories] (-h for help)");
break;
case 41:
p = _("Syntax: gpgtar [options] [files] [directories]\n"
"Encrypt or sign files into an archive\n");
break;
default: p = NULL; break;
}
return p;
}
static void
set_cmd (enum cmd_and_opt_values *ret_cmd, enum cmd_and_opt_values new_cmd)
{
enum cmd_and_opt_values cmd = *ret_cmd;
if (!cmd || cmd == new_cmd)
cmd = new_cmd;
else if (cmd == aSign && new_cmd == aEncrypt)
cmd = aSignEncrypt;
else if (cmd == aEncrypt && new_cmd == aSign)
cmd = aSignEncrypt;
else
{
log_error (_("conflicting commands\n"));
exit (2);
}
*ret_cmd = cmd;
}
/* gpgtar main. */
int
main (int argc, char **argv)
{
ARGPARSE_ARGS pargs;
const char *fname;
int no_more_options = 0;
enum cmd_and_opt_values cmd = 0;
int skip_crypto = 0;
assert (sizeof (struct ustar_raw_header) == 512);
gnupg_reopen_std ("gpgtar");
set_strusage (my_strusage);
log_set_prefix ("gpgtar", 1);
/* Make sure that our subsystems are ready. */
i18n_init();
init_common_subsystems (&argc, &argv);
/* Parse the command line. */
pargs.argc = &argc;
pargs.argv = &argv;
pargs.flags = ARGPARSE_FLAG_KEEP;
while (!no_more_options && optfile_parse (NULL, NULL, NULL, &pargs, opts))
{
switch (pargs.r_opt)
{
case oOutput: opt.outfile = pargs.r.ret_str; break;
case oQuiet: opt.quiet = 1; break;
case oVerbose: opt.verbose++; break;
case oNoVerbose: opt.verbose = 0; break;
case aList:
case aDecrypt:
case aEncrypt:
case aSign:
set_cmd (&cmd, pargs.r_opt);
break;
case oSymmetric:
set_cmd (&cmd, aEncrypt);
opt.symmetric = 1;
break;
case oSkipCrypto:
skip_crypto = 1;
break;
default: pargs.err = 2; break;
}
}
if (log_get_errorcount (0))
exit (2);
switch (cmd)
{
case aList:
if (argc > 1)
usage (1);
fname = argc ? *argv : NULL;
if (skip_crypto)
gpgtar_list (fname);
else
decrypt_and_list (fname);
break;
case aEncrypt:
if (!argc)
usage (1);
if (skip_crypto)
gpgtar_create (argv);
else
tar_and_encrypt (argv);
break;
case aDecrypt:
if (argc != 1)
usage (1);
if (opt.outfile)
log_info ("note: ignoring option --output\n");
fname = argc ? *argv : NULL;
if (skip_crypto)
gpgtar_extract (fname);
else
decrypt_and_untar (fname);
break;
default:
log_error (_("invalid command (there is no implicit command)\n"));
break;
}
return log_get_errorcount (0)? 1:0;
}
/* Read the next record from STREAM. RECORD is a buffer provided by
the caller and must be at leadt of size RECORDSIZE. The function
return 0 on success and and error code on failure; a diagnostic
printed as well. Note that there is no need for an EOF indicator
because a tarball has an explicit EOF record. */
gpg_error_t
read_record (estream_t stream, void *record)
{
gpg_error_t err;
size_t nread;
nread = es_fread (record, 1, RECORDSIZE, stream);
if (nread != RECORDSIZE)
{
err = gpg_error_from_syserror ();
if (es_ferror (stream))
log_error ("error reading `%s': %s\n",
es_fname_get (stream), gpg_strerror (err));
else
log_error ("error reading `%s': premature EOF "
"(size of last record: %zu)\n",
es_fname_get (stream), nread);
}
else
err = 0;
return err;
}
/* Write the RECORD of size RECORDSIZE to STREAM. FILENAME is the
name of the file used for diagnostics. */
gpg_error_t
write_record (estream_t stream, const void *record)
{
gpg_error_t err;
size_t nwritten;
nwritten = es_fwrite (record, 1, RECORDSIZE, stream);
if (nwritten != RECORDSIZE)
{
err = gpg_error_from_syserror ();
log_error ("error writing `%s': %s\n",
es_fname_get (stream), gpg_strerror (err));
}
else
err = 0;
return err;
}
/* Return true if FP is an unarmored OpenPGP message. Note that this
fucntion reads a few bytes from FP but pushes them back. */
static int
openpgp_message_p (estream_t fp)
{
int ctb;
ctb = es_getc (fp);
if (ctb != EOF)
{
if (es_ungetc (ctb, fp))
log_fatal ("error ungetting first byte: %s\n",
gpg_strerror (gpg_error_from_syserror ()));
if ((ctb & 0x80))
{
switch ((ctb & 0x40) ? (ctb & 0x3f) : ((ctb>>2)&0xf))
{
case PKT_MARKER:
case PKT_SYMKEY_ENC:
case PKT_ONEPASS_SIG:
case PKT_PUBKEY_ENC:
case PKT_SIGNATURE:
case PKT_COMMENT:
case PKT_OLD_COMMENT:
case PKT_PLAINTEXT:
case PKT_COMPRESSED:
case PKT_ENCRYPTED:
return 1; /* Yes, this seems to be an OpenPGP message. */
default:
break;
}
}
}
return 0;
}
static void
tar_and_encrypt (char **inpattern)
{
}
static void
decrypt_and_untar (const char *fname)
{
}
static void
decrypt_and_list (const char *fname)
{
}

124
tools/gpgtar.h Normal file
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@ -0,0 +1,124 @@
/* gpgtar.h - Global definitions for gpgtar
* Copyright (C) 2010 Free Software Foundation, Inc.
*
* This file is part of GnuPG.
*
* GnuPG is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* GnuPG is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#ifndef GPGTAR_H
#define GPGTAR_H
#include "../common/util.h"
/* We keep all global options in the structure OPT. */
struct
{
int verbose;
int quiet;
char *outfile;
int symmetric;
} opt;
/* The size of a tar record. All IO is done in chunks of this size.
Note that we don't care about blocking because this version of tar
is not expected to be used directly on a tape drive in fact it is
used in a pipeline with GPG and thus any blocking would be
useless. */
#define RECORDSIZE 512
/* Description of the USTAR header format. */
struct ustar_raw_header
{
char name[100];
char mode[8];
char uid[8];
char gid[8];
char size[12];
char mtime[12];
char checksum[8];
char typeflag[1];
char linkname[100];
char magic[6];
char version[2];
char uname[32];
char gname[32];
char devmajor[8];
char devminor[8];
char prefix[155];
char pad[12];
};
/* Filetypes as defined by USTAR. */
typedef enum
{
TF_REGULAR,
TF_HARDLINK,
TF_SYMLINK,
TF_CHARDEV,
TF_BLOCKDEV,
TF_DIRECTORY,
TF_FIFO,
TF_RESERVED,
TF_UNKNOWN, /* Needs to be treated as regular file. */
TF_NOTSUP /* Not supported (used with --create). */
} typeflag_t;
/* The internal represenation of a TAR header. */
struct tar_header_s;
typedef struct tar_header_s *tar_header_t;
struct tar_header_s
{
tar_header_t next; /* Used to build a linked list iof entries. */
unsigned long mode; /* The file mode. */
unsigned long nlink; /* Number of hard links. */
unsigned long uid; /* The user id of the file. */
unsigned long gid; /* The group id of the file. */
unsigned long long size; /* The size of the file. */
unsigned long long mtime; /* Modification time since Epoch. Note
that we don't use time_t here but a
type which is more likely to be larger
that 32 bit and thus allows to track
times beyond 2106. */
typeflag_t typeflag; /* The type of the file. */
unsigned long long nrecords; /* Number of data records. */
char name[1]; /* Filename (dynamically extended). */
};
/*-- gpgtar.c --*/
gpg_error_t read_record (estream_t stream, void *record);
gpg_error_t write_record (estream_t stream, const void *record);
/*-- gpgtar-create.c --*/
void gpgtar_create (char **inpattern);
/*-- gpgtar-extract.c --*/
void gpgtar_extract (const char *filename);
/*-- gpgtar-list.c --*/
void gpgtar_list (const char *filename);
tar_header_t gpgtar_read_header (estream_t stream);
void gpgtar_print_header (tar_header_t header, estream_t out);
#endif /*GPGTAR_H*/