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reworked the way hased data is stored and added a "primary" command

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DCVS: ----------------------------------------------------------------------
This commit is contained in:
Werner Koch 2001-08-09 09:34:25 +00:00
parent 0fa9ffe75c
commit aa9da2b07e
14 changed files with 244 additions and 213 deletions
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65
g10/parse-packet.c
View file

@ -954,9 +954,10 @@ can_handle_critical( const byte *buffer, size_t n, int type )
const byte *
enum_sig_subpkt( const byte *buffer, sigsubpkttype_t reqtype,
enum_sig_subpkt( const subpktarea_t *pktbuf, sigsubpkttype_t reqtype,
size_t *ret_n, int *start )
{
const byte *buffer;
int buflen;
int type;
int critical;
@ -965,26 +966,25 @@ enum_sig_subpkt( const byte *buffer, sigsubpkttype_t reqtype,
int seq = 0;
int reqseq = start? *start: 0;
if( !buffer || reqseq == -1 ) {
if( !pktbuf || reqseq == -1 ) {
/* return some value different from NULL to indicate that
* there is no crtitical bit we do not understand. The caller
* there is no critical bit we do not understand. The caller
* will never use the value. Yes I know, it is an ugly hack */
return reqtype == SIGSUBPKT_TEST_CRITICAL? (const byte*)&buffer : NULL;
return reqtype == SIGSUBPKT_TEST_CRITICAL? (const byte*)&pktbuf : NULL;
}
buflen = (*buffer << 8) | buffer[1];
buffer += 2;
buffer = pktbuf->data;
buflen = pktbuf->len;
while( buflen ) {
n = *buffer++; buflen--;
if( n == 255 ) {
if( n == 255 ) { /* 4 byte length header */
if( buflen < 4 )
goto too_short;
n = (buffer[0] << 24) | (buffer[1] << 16)
| (buffer[2] << 8) | buffer[3];
| (buffer[2] << 8) | buffer[3];
buffer += 4;
buflen -= 4;
}
else if( n >= 192 ) {
else if( n >= 192 ) { /* 2 byte special encoded length header */
if( buflen < 2 )
goto too_short;
n = (( n - 192 ) << 8) + *buffer + 192;
@ -1059,19 +1059,21 @@ enum_sig_subpkt( const byte *buffer, sigsubpkttype_t reqtype,
const byte *
parse_sig_subpkt( const byte *buffer, sigsubpkttype_t reqtype, size_t *ret_n )
parse_sig_subpkt (const subpktarea_t *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 )
parse_sig_subpkt2 (PKT_signature *sig, sigsubpkttype_t reqtype,
size_t *ret_n )
{
const byte *p;
p = parse_sig_subpkt( sig->hashed_data, reqtype, ret_n );
p = parse_sig_subpkt (sig->hashed, reqtype, ret_n );
if( !p )
p = parse_sig_subpkt( sig->unhashed_data, reqtype, ret_n );
p = parse_sig_subpkt (sig->unhashed, reqtype, ret_n );
return p;
}
@ -1119,11 +1121,12 @@ parse_signature( IOBUF inp, int pkttype, unsigned long pktlen,
goto leave;
}
if( n ) {
sig->hashed_data = m_alloc( n + 2 );
sig->hashed_data[0] = n >> 8;
sig->hashed_data[1] = n;
if( iobuf_read(inp, sig->hashed_data+2, n ) != n ) {
log_error("premature eof while reading hashed signature data\n");
sig->hashed = m_alloc (sizeof (*sig->hashed) + n - 1 );
sig->hashed->size = n;
sig->hashed->len = n;
if( iobuf_read (inp, sig->hashed->data, n ) != n ) {
log_error ("premature eof while reading "
"hashed signature data\n");
rc = -1;
goto leave;
}
@ -1136,11 +1139,15 @@ parse_signature( IOBUF inp, int pkttype, unsigned long pktlen,
goto leave;
}
if( n ) {
sig->unhashed_data = m_alloc( n + 2 );
sig->unhashed_data[0] = n >> 8;
sig->unhashed_data[1] = n;
if( iobuf_read(inp, sig->unhashed_data+2, n ) != n ) {
log_error("premature eof while reading unhashed signature data\n");
/* we add 6 extra bytes so that we have space for the signature
* status cache. Well we are wastin this if there is a cache
* packet already, but in the other case it avoids an realloc */
sig->unhashed = m_alloc (sizeof(*sig->unhashed) + n + 8 - 1 );
sig->unhashed->size = n + 8;
sig->unhashed->len = n;
if( iobuf_read(inp, sig->unhashed->data, n ) != n ) {
log_error("premature eof while reading "
"unhashed signature data\n");
rc = -1;
goto leave;
}
@ -1162,14 +1169,14 @@ parse_signature( IOBUF inp, int pkttype, unsigned long pktlen,
/* set sig->flags.unknown_critical if there is a
* critical bit set for packets which we do not understand */
if( !parse_sig_subpkt( sig->hashed_data, SIGSUBPKT_TEST_CRITICAL, NULL)
|| !parse_sig_subpkt( sig->unhashed_data, SIGSUBPKT_TEST_CRITICAL,
if( !parse_sig_subpkt (sig->hashed, SIGSUBPKT_TEST_CRITICAL, NULL)
|| !parse_sig_subpkt (sig->unhashed, SIGSUBPKT_TEST_CRITICAL,
NULL) )
{
sig->flags.unknown_critical = 1;
}
p = parse_sig_subpkt( sig->hashed_data, SIGSUBPKT_SIG_CREATED, NULL );
p = parse_sig_subpkt (sig->hashed, SIGSUBPKT_SIG_CREATED, NULL );
if( !p )
log_error("signature packet without timestamp\n");
else
@ -1193,8 +1200,8 @@ parse_signature( IOBUF inp, int pkttype, unsigned long pktlen,
sig->digest_algo,
sig->digest_start[0], sig->digest_start[1] );
if( is_v4 ) {
parse_sig_subpkt( sig->hashed_data, SIGSUBPKT_LIST_HASHED, NULL );
parse_sig_subpkt( sig->unhashed_data,SIGSUBPKT_LIST_UNHASHED, NULL);
parse_sig_subpkt (sig->hashed, SIGSUBPKT_LIST_HASHED, NULL );
parse_sig_subpkt (sig->unhashed, SIGSUBPKT_LIST_UNHASHED, NULL);
}
}