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gpg: Remove C-99ism, re-indent, and simplify one function.

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* g10/call-agent.c (struct keyinfo_data): Rename to
keyinfo_data_parm_s.
(agent_get_keyinfo): Replace C-99 style init.
(keyinfo_status_cb): Use new fucntion split_fields.
* g10/export.c (match_curve_skey_pk): Add missings returns error
cases.
(cleartext_secret_key_to_openpgp): Better clear PK->PKEY first.
--

Signed-off-by: Werner Koch <wk@gnupg.org>
This commit is contained in:
Werner Koch 2016-06-11 20:42:28 +02:00
parent 5ba99d9302
commit 334e993a71
No known key found for this signature in database
GPG Key ID: E3FDFF218E45B72B
4 changed files with 107 additions and 77 deletions
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47
g10/call-agent.c
View File

@ -1671,44 +1671,35 @@ agent_probe_any_secret_key (ctrl_t ctrl, kbnode_t keyblock)
struct keyinfo_data {
struct keyinfo_data_parm_s
{
char *serialno;
int cleartext;
};
static gpg_error_t
keyinfo_status_cb (void *opaque, const char *line)
{
struct keyinfo_data *data = opaque;
struct keyinfo_data_parm_s *data = opaque;
int is_smartcard;
const char *s, *s2;
char *s;
if ((s = has_leading_keyword (line, "KEYINFO")) && data)
{
s = strchr (s, ' ');
if (s)
/* Parse the arguments:
* 0 1 2 3 4 5
* <keygrip> <type> <serialno> <idstr> <cached> <protection>
*/
char *fields[6];
if (split_fields (s, fields, DIM (fields)) == 6)
{
is_smartcard = (s[1] == 'T');
if ( s[2] == ' ' && s[3] )
{
s += 3;
s2 = strchr (s, ' ');
if ( s2 > s )
{
if (is_smartcard && !data->serialno)
{
data->serialno = xtrymalloc ((s2 - s)+1);
if (data->serialno)
{
memcpy (data->serialno, s, s2 - s);
(data->serialno)[s2 - s] = 0;
}
}
if (s2 = strchr (s2 + 1, ' '), s2) /* skip IDSTR (can IDSTR contain a space?) */
if (s2 = strchr (s2 + 1, ' '), s2) /* skip CACHED */
data->cleartext = (s2[1] == 'C'); /* 'P' for protected, 'C' for clear */
}
}
is_smartcard = (fields[1][0] == 'T');
if (is_smartcard && !data->serialno && strcmp (fields[2], "-"))
data->serialno = xtrystrdup (fields[2]);
/* 'P' for protected, 'C' for clear */
data->cleartext = (fields[5][0] == 'C');
}
}
return 0;
@ -1728,7 +1719,9 @@ agent_get_keyinfo (ctrl_t ctrl, const char *hexkeygrip,
{
gpg_error_t err;
char line[ASSUAN_LINELENGTH];
struct keyinfo_data keyinfo = { .serialno = NULL, .cleartext = 0 };
struct keyinfo_data_parm_s keyinfo;
memset (&keyinfo, 0,sizeof keyinfo);
*r_serialno = NULL;

122
g10/export.c
View File

@ -390,28 +390,32 @@ exact_subkey_match_p (KEYDB_SEARCH_DESC *desc, KBNODE node)
return result;
}
/* return an error if the key represented by the S-expression s_key
and the OpenPGP key represented by pk do not use the same curve. */
/* Return an error if the key represented by the S-expression S_KEY
* and the OpenPGP key represented by PK do not use the same curve. */
static gpg_error_t
match_curve_skey_pk (gcry_sexp_t s_key, PKT_public_key *pk)
{
gcry_sexp_t curve = NULL, flags = NULL;
char *curve_str = NULL, *flag;
gcry_sexp_t curve = NULL;
gcry_sexp_t flags = NULL;
char *curve_str = NULL;
char *flag;
const char *oidstr = NULL;
gcry_mpi_t curve_as_mpi = NULL;
gpg_error_t err;
int is_eddsa = 0, idx = 0;
int is_eddsa = 0;
int idx = 0;
if (!(pk->pubkey_algo==PUBKEY_ALGO_ECDH ||
pk->pubkey_algo==PUBKEY_ALGO_ECDSA ||
pk->pubkey_algo==PUBKEY_ALGO_EDDSA))
if (!(pk->pubkey_algo==PUBKEY_ALGO_ECDH
|| pk->pubkey_algo==PUBKEY_ALGO_ECDSA
|| pk->pubkey_algo==PUBKEY_ALGO_EDDSA))
return gpg_error (GPG_ERR_PUBKEY_ALGO);
curve = gcry_sexp_find_token (s_key, "curve", 0);
if (!curve)
{
log_error ("no reported curve\n");
err = gpg_error (GPG_ERR_UNKNOWN_CURVE);
return gpg_error (GPG_ERR_UNKNOWN_CURVE);
}
curve_str = gcry_sexp_nth_string (curve, 1);
gcry_sexp_release (curve); curve = NULL;
@ -424,30 +428,32 @@ match_curve_skey_pk (gcry_sexp_t s_key, PKT_public_key *pk)
if (!oidstr)
{
log_error ("no OID known for curve '%s'\n", curve_str);
gcry_free (curve_str);
xfree (curve_str);
return gpg_error (GPG_ERR_UNKNOWN_CURVE);
}
gcry_free (curve_str);
xfree (curve_str);
err = openpgp_oid_from_str (oidstr, &curve_as_mpi);
if (err)
return err;
if (gcry_mpi_cmp(pk->pkey[0], curve_as_mpi))
if (gcry_mpi_cmp (pk->pkey[0], curve_as_mpi))
{
log_error ("curves do not match\n");
err = gpg_error (GPG_ERR_INV_CURVE);
gcry_mpi_release (curve_as_mpi);
return gpg_error (GPG_ERR_INV_CURVE);
}
gcry_mpi_release (curve_as_mpi);
flags = gcry_sexp_find_token (s_key, "flags", 0);
if (flags)
for (idx = 1; idx < gcry_sexp_length (flags); idx++)
{
flag = gcry_sexp_nth_string (flags, idx);
if (flag && (strcmp ("eddsa", flag) == 0))
is_eddsa = 1;
gcry_free (flag);
}
if (is_eddsa !=
(pk->pubkey_algo==PUBKEY_ALGO_EDDSA))
{
for (idx = 1; idx < gcry_sexp_length (flags); idx++)
{
flag = gcry_sexp_nth_string (flags, idx);
if (flag && (strcmp ("eddsa", flag) == 0))
is_eddsa = 1;
gcry_free (flag);
}
}
if (is_eddsa != (pk->pubkey_algo == PUBKEY_ALGO_EDDSA))
{
log_error ("disagreement about EdDSA\n");
err = gpg_error (GPG_ERR_INV_CURVE);
@ -456,6 +462,7 @@ match_curve_skey_pk (gcry_sexp_t s_key, PKT_public_key *pk)
return err;
}
/* Return a canonicalized public key algoithms. This is used to
compare different flavors of algorithms (e.g. ELG and ELG_E are
considered the same). */
@ -476,8 +483,9 @@ canon_pk_algo (enum gcry_pk_algos algo)
}
}
/* take a cleartext dump of a secret key in PK and change the
parameter array in PK to include the secret parameters. */
/* Take a cleartext dump of a secret key in PK and change the
* parameter array in PK to include the secret parameters. */
static gpg_error_t
cleartext_secret_key_to_openpgp (gcry_sexp_t s_key, PKT_public_key *pk)
{
@ -503,7 +511,7 @@ cleartext_secret_key_to_openpgp (gcry_sexp_t s_key, PKT_public_key *pk)
key_type = gcry_sexp_nth_string(key, 0);
pk_algo = gcry_pk_map_name (key_type);
log_assert(pk->seckey_info == NULL);
log_assert (!pk->seckey_info);
pk->seckey_info = ski = xtrycalloc (1, sizeof *ski);
if (!ski)
@ -525,15 +533,24 @@ cleartext_secret_key_to_openpgp (gcry_sexp_t s_key, PKT_public_key *pk)
if (gcry_mpi_cmp(pk->pkey[idx], pub_params[idx]))
err = gpg_error (GPG_ERR_BAD_PUBKEY);
if (!err)
err = gcry_sexp_extract_param (key, NULL, "dpqu",
&pk->pkey[2],
&pk->pkey[3],
&pk->pkey[4],
&pk->pkey[5],
NULL);
{
for (idx = 2; idx < 6 && !err; idx++)
{
gcry_mpi_release (pk->pkey[idx]);
pk->pkey[idx] = NULL;
}
err = gcry_sexp_extract_param (key, NULL, "dpqu",
&pk->pkey[2],
&pk->pkey[3],
&pk->pkey[4],
&pk->pkey[5],
NULL);
}
if (!err)
for (idx = 2; idx < 6; idx++)
ski->csum += checksum_mpi (pk->pkey[idx]);
{
for (idx = 2; idx < 6; idx++)
ski->csum += checksum_mpi (pk->pkey[idx]);
}
break;
case GCRY_PK_DSA:
@ -549,9 +566,13 @@ cleartext_secret_key_to_openpgp (gcry_sexp_t s_key, PKT_public_key *pk)
if (gcry_mpi_cmp(pk->pkey[idx], pub_params[idx]))
err = gpg_error (GPG_ERR_BAD_PUBKEY);
if (!err)
err = gcry_sexp_extract_param (key, NULL, "x",
&pk->pkey[4],
NULL);
{
gcry_mpi_release (pk->pkey[4]);
pk->pkey[4] = NULL;
err = gcry_sexp_extract_param (key, NULL, "x",
&pk->pkey[4],
NULL);
}
if (!err)
ski->csum += checksum_mpi (pk->pkey[4]);
break;
@ -568,9 +589,13 @@ cleartext_secret_key_to_openpgp (gcry_sexp_t s_key, PKT_public_key *pk)
if (gcry_mpi_cmp(pk->pkey[idx], pub_params[idx]))
err = gpg_error (GPG_ERR_BAD_PUBKEY);
if (!err)
err = gcry_sexp_extract_param (key, NULL, "x",
&pk->pkey[3],
NULL);
{
gcry_mpi_release (pk->pkey[3]);
pk->pkey[3] = NULL;
err = gcry_sexp_extract_param (key, NULL, "x",
&pk->pkey[3],
NULL);
}
if (!err)
ski->csum += checksum_mpi (pk->pkey[3]);
break;
@ -590,9 +615,13 @@ cleartext_secret_key_to_openpgp (gcry_sexp_t s_key, PKT_public_key *pk)
if (pk->pubkey_algo == PUBKEY_ALGO_ECDH)
sec_start += 1;
if (!err)
err = gcry_sexp_extract_param (key, NULL, "d",
&pk->pkey[sec_start],
NULL);
{
gcry_mpi_release (pk->pkey[sec_start]);
pk->pkey[sec_start] = NULL;
err = gcry_sexp_extract_param (key, NULL, "d",
&pk->pkey[sec_start],
NULL);
}
if (!err)
ski->csum += checksum_mpi (pk->pkey[sec_start]);
@ -600,9 +629,11 @@ cleartext_secret_key_to_openpgp (gcry_sexp_t s_key, PKT_public_key *pk)
default:
pk->seckey_info = NULL;
free (ski);
xfree (ski);
err = gpg_error (GPG_ERR_NOT_IMPLEMENTED);
break;
}
leave:
gcry_sexp_release (top_list);
gcry_sexp_release (key);
@ -621,6 +652,7 @@ cleartext_secret_key_to_openpgp (gcry_sexp_t s_key, PKT_public_key *pk)
goto leave;
}
/* Use the key transfer format given in S_PGP to create the secinfo
structure in PK and change the parameter array in PK to include the
secret parameters. */
@ -1042,8 +1074,8 @@ print_status_exported (PKT_public_key *pk)
* Then, parse the decrypted key data in transfer format, and put
* secret parameters into PK.
*
* if CLEARTEXT is 0, store the secret key material
* passphrase-protected. otherwise, store secret key material in the
* If CLEARTEXT is 0, store the secret key material
* passphrase-protected. Otherwise, store secret key material in the
* clear.
*
* CACHE_NONCE_ADDR is used to share nonce for multple key retrievals.

12
g10/keygen.c
View File

@ -4066,19 +4066,23 @@ card_store_key_with_backup (ctrl_t ctrl, PKT_public_key *sub_psk,
goto leave;
}
err = gcry_cipher_open (&cipherhd, GCRY_CIPHER_AES128, GCRY_CIPHER_MODE_AESWRAP, 0);
err = gcry_cipher_open (&cipherhd, GCRY_CIPHER_AES128,
GCRY_CIPHER_MODE_AESWRAP, 0);
if (!err)
err = gcry_cipher_setkey (cipherhd, kek, keklen);
if (err)
{
log_error ("error setting up an encryption context: %s\n", gpg_strerror (err));
log_error ("error setting up an encryption context: %s\n",
gpg_strerror (err));
goto leave;
}
err = receive_seckey_from_agent (ctrl, cipherhd, 0, &cache_nonce, hexgrip, sk);
err = receive_seckey_from_agent (ctrl, cipherhd, 0,
&cache_nonce, hexgrip, sk);
if (err)
{
log_error ("error getting secret key from agent: %s\n", gpg_strerror (err));
log_error ("error getting secret key from agent: %s\n",
gpg_strerror (err));
goto leave;
}

3
g10/keylist.c
View File

@ -1354,7 +1354,8 @@ list_keyblock_colon (ctrl_t ctrl, kbnode_t keyblock,
log_error ("error computing a keygrip: %s\n", gpg_strerror (rc));
}
stubkey = 0;
if ((secret||has_secret) && agent_get_keyinfo (NULL, hexgrip, &serialno, NULL))
if ((secret || has_secret)
&& agent_get_keyinfo (NULL, hexgrip, &serialno, NULL))
stubkey = 1; /* Key not found. */
keyid_from_pk (pk, keyid);