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See ChangeLog: Wed May 26 14:36:29 CEST 1999 Werner Koch

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This commit is contained in:
Werner Koch 1999-05-26 12:41:46 +00:00
parent 9a2ce9b391
commit d5fd04e0ce
11 changed files with 234 additions and 77 deletions
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2
NEWS
View File

@ -1,5 +1,5 @@
* New option -N to insert notations
* New option -N to insert notations and a --set-policy-url.

7
doc/gpg.1pod
View File

@ -396,6 +396,13 @@ B<--notation-data>, B<-N> I<name>=<value>
or the underscore; the first character muts not be a digit.
B<value> May be any printable string; it will encoded in UTF8,
so sou should have check that your B<--charset> is set right.
If you prefix I<name> with an exclamation mark, the notation
data will be flagged as critical. (rfc2440:5.2.3.15).
B<--set-policy-url> I<string>
Use I<string> as Policy URL for signatures (rfc2440:5.2.3.19).
If you prefix it with an exclamation mark, the policy URL
packet will be flagged as critical.
B<--set-filename> I<string>
Use I<string> as the name of file which is stored in

13
g10/ChangeLog
View File

@ -1,3 +1,16 @@
Wed May 26 14:36:29 CEST 1999 Werner Koch <wk@isil.d.shuttle.de>
* build-packet.c (build_sig_subpkt): Support large packets.
* parse-packet.c (enum_sig_subpkt): Replaces parse_sig_subpkt.
* mainproc.c (print_notation_data): Print all notation packets.
* g10.c (add_notation_data): Add a way to specify the critical flag.
(main): Add option --set-policy-url.
(check_policy_url): Basic checks.
* sign.c (mk_notation_and_policy): Replaces mk_notation.
* parse-packet.c (can_handle_critical): Moved decision whether we can
handle critical subpacket to an extra function.
Tue May 25 19:50:32 CEST 1999 Werner Koch <wk@isil.d.shuttle.de>
* sign.c (sign_file): Always use compression algo 1 for signed

56
g10/build-packet.c
View File

@ -566,6 +566,7 @@ find_subpkt( byte *buffer, sigsubpkttype_t reqtype,
return NULL;
buflen = (*buffer << 8) | buffer[1];
buffer += 2;
log_debug("find_subpkt: tyoe=%d bufferlength=%d\n", reqtype, buflen );
for(;;) {
if( !buflen )
return NULL; /* end of packets; not found */
@ -586,6 +587,7 @@ find_subpkt( byte *buffer, sigsubpkttype_t reqtype,
buffer++;
buflen--;
}
log_debug("find_subpkt: this len=%u\n", n );
if( buflen < n )
break;
type = *buffer & 0x7f;
@ -622,21 +624,29 @@ build_sig_subpkt( PKT_signature *sig, sigsubpkttype_t type,
{
byte *data;
size_t hlen, dlen;
int found, hashed, realloced;
size_t hlen, dlen, nlen;
int found=0;
int critical, hashed, realloced;
size_t n, n0;
if( (data = find_subpkt( sig->hashed_data, type, &hlen, &dlen )) )
critical = (type & SIGSUBPKT_FLAG_CRITICAL);
type &= ~SIGSUBPKT_FLAG_CRITICAL;
if( type == SIGSUBPKT_NOTATION )
; /* we allow multiple packets */
else if( (data = find_subpkt( sig->hashed_data, type, &hlen, &dlen )) )
found = 1;
else if( (data = find_subpkt( sig->unhashed_data, type, &hlen, &dlen )))
found = 2;
else
found = 0;
if( found )
log_bug("build_sig_packet: update nyi\n");
if( buflen+1 >= 192 )
log_bug("build_sig_packet: long subpackets are nyi\n");
if( (buflen+1) >= 8384 )
nlen = 5;
else if( (buflen+1) >= 192 )
nlen = 2;
else
nlen = 1;
switch( type ) {
case SIGSUBPKT_SIG_CREATED:
@ -647,6 +657,7 @@ build_sig_subpkt( PKT_signature *sig, sigsubpkttype_t type,
case SIGSUBPKT_KS_FLAGS:
case SIGSUBPKT_KEY_EXPIRE:
case SIGSUBPKT_NOTATION:
case SIGSUBPKT_POLICY:
hashed = 1; break;
default: hashed = 0; break;
}
@ -654,7 +665,7 @@ build_sig_subpkt( PKT_signature *sig, sigsubpkttype_t type,
if( hashed ) {
n0 = sig->hashed_data ? ((*sig->hashed_data << 8)
| sig->hashed_data[1]) : 0;
n = n0 + 1 + 1 + buflen; /* length, type, buffer */
n = n0 + nlen + 1 + buflen; /* length, type, buffer */
realloced = !!sig->hashed_data;
data = sig->hashed_data ? m_realloc( sig->hashed_data, n+2 )
: m_alloc( n+2 );
@ -662,17 +673,37 @@ build_sig_subpkt( PKT_signature *sig, sigsubpkttype_t type,
else {
n0 = sig->unhashed_data ? ((*sig->unhashed_data << 8)
| sig->unhashed_data[1]) : 0;
n = n0 + 1 + 1 + buflen; /* length, type, buffer */
n = n0 + nlen + 1 + buflen; /* length, type, buffer */
realloced = !!sig->unhashed_data;
data = sig->unhashed_data ? m_realloc( sig->unhashed_data, n+2 )
: m_alloc( n+2 );
}
if( critical )
type |= SIGSUBPKT_FLAG_CRITICAL;
data[0] = (n >> 8) & 0xff;
data[1] = n & 0xff;
data[n0+2] = buflen+1;
data[n0+3] = type;
memcpy(data+n0+4, buffer, buflen );
if( nlen == 5 ) {
data[n0+2] = 255;
data[n0+3] = (buflen+1) >> 24;
data[n0+4] = (buflen+1) >> 16;
data[n0+5] = (buflen+1) >> 8;
data[n0+6] = (buflen+1);
data[n0+7] = type;
memcpy(data+n0+8, buffer, buflen );
}
else if( nlen == 2 ) {
data[n0+2] = (buflen+1-192) / 256 + 192;
data[n0+3] = (buflen+1-192) & 256;
data[n0+4] = type;
memcpy(data+n0+5, buffer, buflen );
}
else {
data[n0+2] = buflen+1;
data[n0+3] = type;
memcpy(data+n0+4, buffer, buflen );
}
if( hashed ) {
if( !realloced )
@ -686,7 +717,6 @@ build_sig_subpkt( PKT_signature *sig, sigsubpkttype_t type,
}
}
/****************
* Put all the required stuff from SIG into subpackets of sig.
*/

40
g10/g10.c
View File

@ -143,6 +143,7 @@ enum cmd_and_opt_values { aNull = 0,
oEmuChecksumBug,
oRunAsShmCP,
oSetFilename,
oSetPolicyURL,
oComment,
oThrowKeyid,
oForceV3Sigs,
@ -293,6 +294,7 @@ static ARGPARSE_OPTS opts[] = {
{ oEmuChecksumBug, "emulate-checksum-bug", 0, "@"},
{ oRunAsShmCP, "run-as-shm-coprocess", 4, "@" },
{ oSetFilename, "set-filename", 2, "@" },
{ oSetPolicyURL, "set-policy-url", 2, "@" },
{ oComment, "comment", 2, "@" },
{ oNoVersion, "no-version", 0, "@"},
{ oNotDashEscaped, "not-dash-escaped", 0, "@" },
@ -315,6 +317,7 @@ static void set_cmd( enum cmd_and_opt_values *ret_cmd,
static void print_hex( byte *p, size_t n );
static void print_mds( const char *fname, int algo );
static void add_notation_data( const char *string );
static int check_policy_url( const char *s );
const char *
strusage( int level )
@ -709,6 +712,7 @@ main( int argc, char **argv )
#endif
break;
case oSetFilename: opt.set_filename = pargs.r.ret_str; break;
case oSetPolicyURL: opt.set_policy_url = pargs.r.ret_str; break;
case oComment: opt.comment_string = pargs.r.ret_str; break;
case oThrowKeyid: opt.throw_keyid = 1; break;
case oForceV3Sigs: opt.force_v3_sigs = 1; break;
@ -801,6 +805,10 @@ main( int argc, char **argv )
if( check_digest_algo(opt.s2k_digest_algo) )
log_error(_("selected digest algorithm is invalid\n"));
}
if( opt.set_policy_url ) {
if( check_policy_url( opt.set_policy_url ) )
log_error(_("the given policy URL is invalid\n"));
}
if( opt.def_compress_algo < 1 || opt.def_compress_algo > 2 )
log_error(_("compress algorithm must be in range %d..%d\n"), 1, 2);
if( opt.completes_needed < 1 )
@ -1394,10 +1402,18 @@ print_mds( const char *fname, int algo )
static void
add_notation_data( const char *string )
{
const char *s = string;
const char *s;
const char *s2;
STRLIST sl;
int critical=0;
int highbit=0;
if( *string == '!' ) {
critical = 1;
string++;
}
s = string;
if( !*s || (*s & 0x80) || (!isalpha(*s) && *s != '_') ) {
log_error(_("the first character of a notation name "
"must be a letter or an underscore\n") );
@ -1429,10 +1445,28 @@ add_notation_data( const char *string )
if( highbit ) { /* must use UTF8 encoding */
char *p = native_to_utf8( string );
add_to_strlist( &opt.notation_data, p );
sl = add_to_strlist( &opt.notation_data, p );
m_free( p );
}
else
add_to_strlist( &opt.notation_data, string );
sl = add_to_strlist( &opt.notation_data, string );
if( critical )
sl->flags |= 1;
}
static int
check_policy_url( const char *s )
{
if( *s == '!' )
s++;
if( !*s )
return -1;
for(; *s ; s++ ) {
if( (*s & 0x80) || iscntrl(*s) )
return -1;
}
return 0;
}

6
g10/import.c
View File

@ -376,10 +376,10 @@ import_one( const char *fname, KBNODE keyblock, int fast )
log_info( _("writing to `%s'\n"),
keyblock_resource_name(&kbpos) );
if( (rc=lock_keyblock( &kbpos )) )
log_error(_("can't lock keyring `%': %s\n"),
log_error(_("can't lock keyring `%s': %s\n"),
keyblock_resource_name(&kbpos), g10_errstr(rc) );
else if( (rc=insert_keyblock( &kbpos, keyblock )) )
log_error( _("error writing keyring `%': %s\n"),
log_error( _("error writing keyring `%s': %s\n"),
keyblock_resource_name(&kbpos), g10_errstr(rc) );
unlock_keyblock( &kbpos );
/* we are ready */
@ -432,7 +432,7 @@ import_one( const char *fname, KBNODE keyblock, int fast )
mod_key = 1;
/* keyblock_orig has been updated; write */
if( (rc=lock_keyblock( &kbpos )) )
log_error( _("can't lock keyring `%': %s\n"),
log_error( _("can't lock keyring `%s': %s\n"),
keyblock_resource_name(&kbpos), g10_errstr(rc) );
else if( (rc=update_keyblock( &kbpos, keyblock_orig )) )
log_error( _("error writing keyring `%s': %s\n"),

50
g10/mainproc.c
View File

@ -497,29 +497,39 @@ print_notation_data( PKT_signature *sig )
{
size_t n, n1, n2;
const byte *p;
int seq = 0;
/* FIXME: we can not handle multiple notaion data packets yet */
p = parse_sig_subpkt( sig->hashed_data, SIGSUBPKT_NOTATION, &n );
if( !p )
return;
if( n < 8 ) {
log_info(_("WARNING: invalid notation data found\n"));
return;
while( (p = enum_sig_subpkt( sig->hashed_data, SIGSUBPKT_NOTATION,
&n, &seq )) ) {
if( n < 8 ) {
log_info(_("WARNING: invalid notation data found\n"));
return;
}
if( !(*p & 0x80) )
return; /* not human readable */
n1 = (p[4] << 8) | p[5];
n2 = (p[6] << 8) | p[7];
p += 8;
if( 8+n1+n2 != n ) {
log_info(_("WARNING: invalid notation data found\n"));
return;
}
log_info(_("Notation: ") );
print_string( log_stream(), p, n1, 0 );
putc( '=', log_stream() );
print_string( log_stream(), p+n1, n2, 0 );
putc( '\n', log_stream() );
}
if( !(*p & 0x80) )
return; /* not human readable */
n1 = (p[4] << 8) | p[5];
n2 = (p[6] << 8) | p[7];
p += 8;
if( 8+n1+n2 != n ) {
log_info(_("WARNING: invalid notation data found\n"));
return;
if( (p = parse_sig_subpkt( sig->hashed_data, SIGSUBPKT_POLICY, &n ) )) {
log_info(_("Policy: ") );
print_string( log_stream(), p, n, 0 );
putc( '\n', log_stream() );
}
log_info(_("Notation: ") );
print_string( log_stream(), p, n1, 0 );
putc( '=', log_stream() );
print_string( log_stream(), p+n1, n2, 0 );
putc( '\n', log_stream() );
/* Now check wheter the key of this signature has some
* notation data */
/* TODO */
}
/****************

1
g10/options.h
View File

@ -75,6 +75,7 @@ struct {
int no_encrypt_to;
int interactive;
STRLIST notation_data;
const char *set_policy_url;
} opt;

10
g10/packet.h
View File

@ -231,7 +231,9 @@ typedef enum {
SIGSUBPKT_POLICY =26, /* policy URL */
SIGSUBPKT_KEY_FLAGS =27, /* key flags */
SIGSUBPKT_SIGNERS_UID =28, /* signer's user id */
SIGSUBPKT_PRIV_ADD_SIG =101 /* signatur is also valid for this uid */
SIGSUBPKT_PRIV_ADD_SIG =101,/* signatur is also valid for this uid */
SIGSUBPKT_FLAG_CRITICAL=128
} sigsubpkttype_t;
@ -264,8 +266,10 @@ int copy_some_packets( IOBUF inp, IOBUF out, ulong stopoff );
int skip_some_packets( IOBUF inp, unsigned n );
#endif
const byte *parse_sig_subpkt( const byte *buffer,
sigsubpkttype_t reqtype, size_t *ret_n );
const byte *enum_sig_subpkt( const byte *buffer, sigsubpkttype_t reqtype,
size_t *ret_n, int *start );
const byte *parse_sig_subpkt( const byte *buffer, sigsubpkttype_t reqtype,
size_t *ret_n );
const byte *parse_sig_subpkt2( PKT_signature *sig,
sigsubpkttype_t reqtype, size_t *ret_n );

62
g10/parse-packet.c
View File

@ -761,9 +761,9 @@ dump_sig_subpkt( int hashed, int type, int critical,
if( 8+n1+n2 != length )
p = "[error]";
else {
print_string( stdout, s, n1, 0 );
print_string( stdout, s, n1, ')' );
putc( '=', stdout );
print_string( stdout, s+n1, n2, 0 );
print_string( stdout, s+n1, n2, ')' );
}
}
}
@ -788,7 +788,8 @@ dump_sig_subpkt( int hashed, int type, int critical,
p = "primary user id";
break;
case SIGSUBPKT_POLICY:
p = "policy URL";
fputs("policy: ", stdout );
print_string( stdout, buffer, length, ')' );
break;
case SIGSUBPKT_KEY_FLAGS:
p = "key flags";
@ -836,6 +837,7 @@ parse_one_sig_subpkt( const byte *buffer, size_t n, int type )
case SIGSUBPKT_PREF_SYM:
case SIGSUBPKT_PREF_HASH:
case SIGSUBPKT_PREF_COMPR:
case SIGSUBPKT_POLICY:
return 0;
case SIGSUBPKT_PRIV_ADD_SIG:
/* because we use private data, we check the GNUPG marker */
@ -849,16 +851,46 @@ parse_one_sig_subpkt( const byte *buffer, size_t n, int type )
return -3;
}
static int
can_handle_critical( const byte *buffer, size_t n, int type )
{
switch( type ) {
case SIGSUBPKT_NOTATION:
if( n >= 8 && (*buffer & 0x80) )
return 1; /* human readable is handled */
return 0;
case SIGSUBPKT_SIG_CREATED:
case SIGSUBPKT_SIG_EXPIRE:
case SIGSUBPKT_KEY_EXPIRE:
case SIGSUBPKT_EXPORTABLE:
case SIGSUBPKT_ISSUER:/* issuer key ID */
case SIGSUBPKT_PREF_SYM:
case SIGSUBPKT_PREF_HASH:
case SIGSUBPKT_PREF_COMPR:
return 1;
case SIGSUBPKT_POLICY: /* Is enough to show the policy? */
default:
return 0;
}
}
const byte *
parse_sig_subpkt( const byte *buffer, sigsubpkttype_t reqtype, size_t *ret_n )
enum_sig_subpkt( const byte *buffer, sigsubpkttype_t reqtype,
size_t *ret_n, int *start )
{
int buflen;
int type;
int critical;
int offset;
size_t n;
int seq = 0;
int reqseq = start? *start: 0;
if( !buffer )
if( !buffer || reqseq == -1 )
return NULL;
buflen = (*buffer << 8) | buffer[1];
buffer += 2;
@ -889,13 +921,17 @@ parse_sig_subpkt( const byte *buffer, sigsubpkttype_t reqtype, size_t *ret_n )
}
else
critical = 0;
if( reqtype == SIGSUBPKT_TEST_CRITICAL ) {
if( !(++seq > reqseq) )
;
else if( reqtype == SIGSUBPKT_TEST_CRITICAL ) {
if( critical ) {
if( n-1 > buflen+1 )
goto too_short;
if( parse_one_sig_subpkt(buffer+1, n-1, type ) < 0 ) {
if( !can_handle_critical(buffer+1, n-1, type ) ) {
log_info(_("subpacket of type %d has critical bit set\n"),
type);
if( start )
*start = seq;
return NULL; /* this is an error */
}
}
@ -922,6 +958,8 @@ parse_sig_subpkt( const byte *buffer, sigsubpkttype_t reqtype, size_t *ret_n )
default:
break;
}
if( start )
*start = seq;
return buffer+offset;
}
buffer += n; buflen -=n;
@ -929,14 +967,24 @@ parse_sig_subpkt( const byte *buffer, sigsubpkttype_t reqtype, size_t *ret_n )
if( reqtype == SIGSUBPKT_TEST_CRITICAL )
return buffer; /* as value true to indicate that there is no */
/* critical bit we don't understand */
if( start )
*start = -1;
return NULL; /* end of packets; not found */
too_short:
log_error("buffer shorter than subpacket\n");
if( start )
*start = -1;
return NULL;
}
const byte *
parse_sig_subpkt( const byte *buffer, sigsubpkttype_t reqtype, size_t *ret_n )
{
return enum_sig_subpkt( buffer, reqtype, ret_n, NULL );
}
const byte *
parse_sig_subpkt2( PKT_signature *sig, sigsubpkttype_t reqtype, size_t *ret_n )
{

64
g10/sign.c
View File

@ -46,35 +46,48 @@
* NAME=VALUE format.
*/
static void
mk_notation( PKT_signature *sig, STRLIST nd )
mk_notation_and_policy( PKT_signature *sig )
{
const char *string, *s;
byte *buf;
unsigned n1, n2;
if( sig->version < 4 ) {
/* notation data */
if( opt.notation_data && sig->version < 4 )
log_info("can't put notation data into v3 signatures\n");
return;
else if( opt.notation_data ) {
STRLIST nd = opt.notation_data;
for( ; nd; nd = nd->next ) {
string = nd->d;
s = strchr( string, '=' );
if( !s )
BUG(); /* we have already parsed this */
n1 = s - string;
s++;
n2 = strlen(s);
buf = m_alloc( 8 + n1 + n2 );
buf[0] = 0x80; /* human readable */
buf[1] = buf[2] = buf[3] = 0;
buf[4] = n1 >> 8;
buf[5] = n1;
buf[6] = n2 >> 8;
buf[7] = n2;
memcpy(buf+8, string, n1 );
memcpy(buf+8+n1, s, n2 );
build_sig_subpkt( sig, SIGSUBPKT_NOTATION
| ((nd->flags & 1)? SIGSUBPKT_FLAG_CRITICAL:0),
buf, 8+n1+n2 );
}
}
for( ; nd; nd = nd->next ) {
string = nd->d;
s = strchr( string, '=' );
if( !s )
BUG(); /* we have already parsed this */
n1 = s - string;
s++;
n2 = strlen(s);
buf = m_alloc( 8 + n1 + n2 );
buf[0] = 0x80; /* human readable */
buf[1] = buf[2] = buf[3] = 0;
buf[4] = n1 >> 8;
buf[5] = n1;
buf[6] = n2 >> 8;
buf[7] = n2;
memcpy(buf+8, string, n1 );
memcpy(buf+8+n1, s, n2 );
build_sig_subpkt( sig, SIGSUBPKT_NOTATION, buf, 8+n1+n2 );
/* set policy URL */
if( (s=opt.set_policy_url) ) {
if( *s == '!' )
build_sig_subpkt( sig, SIGSUBPKT_POLICY | SIGSUBPKT_FLAG_CRITICAL,
s+1, strlen(s+1) );
else
build_sig_subpkt( sig, SIGSUBPKT_POLICY, s, strlen(s) );
}
}
@ -435,8 +448,7 @@ sign_file( STRLIST filenames, int detached, STRLIST locusr,
md_putc( md, sig->version );
}
if( opt.notation_data )
mk_notation( sig, opt.notation_data );
mk_notation_and_policy( sig );
md_putc( md, sig->sig_class );
if( sig->version < 4 ) {
@ -625,8 +637,7 @@ clearsign_file( const char *fname, STRLIST locusr, const char *outfile )
md_putc( md, sig->version );
}
if( opt.notation_data )
mk_notation( sig, opt.notation_data );
mk_notation_and_policy( sig );
md_putc( md, sig->sig_class );
if( sig->version < 4 ) {
@ -756,8 +767,7 @@ make_keysig_packet( PKT_signature **ret_sig, PKT_public_key *pk,
rc = (*mksubpkt)( sig, opaque );
if( !rc ) {
if( opt.notation_data )
mk_notation( sig, opt.notation_data );
mk_notation_and_policy( sig );
if( sig->version >= 4 )
md_putc( md, sig->version );
md_putc( md, sig->sig_class );