lib/libssh2
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Fix mem leak on errors.
This commit is contained in:
Simon Josefsson
2007-01-18 11:37:32 +00:00
parent a0eda7365e
commit 576d37dafd
1 changed files with 38 additions and 34 deletions
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72
src/libgcrypt.c
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@@ -102,17 +102,18 @@ int _libssh2_dsa_new(libssh2_dsa_ctx **dsactx,
const unsigned char *y,
unsigned long y_len)
{
int rc;
int rc;
rc = gcry_sexp_build (dsactx, NULL, "(public-key(dsa(p%b)(q%b)(g%b)(y%b)))",
p_len, p, q_len, q, g_len, g, y_len, y);
if (rc)
{
*dsactx = NULL;
return -1;
}
rc = gcry_sexp_build (dsactx, NULL,
"(public-key(dsa(p%b)(q%b)(g%b)(y%b)))",
p_len, p, q_len, q, g_len, g, y_len, y);
if (rc)
{
*dsactx = NULL;
return -1;
}
return 0;
return 0;
}
@@ -122,34 +123,34 @@ int _libssh2_dsa_sha1_verify(libssh2_dsa_ctx *dsactx,
const unsigned char *m,
unsigned long m_len)
{
unsigned char hash[SHA_DIGEST_LENGTH+1];
int ret;
gcry_sexp_t s_sig, s_hash;
int rc = -1;
unsigned char hash[SHA_DIGEST_LENGTH+1];
int ret;
gcry_sexp_t s_sig, s_hash;
int rc = -1;
libssh2_sha1(m, m_len, hash+1);
hash[0] = 0;
libssh2_sha1(m, m_len, hash+1);
hash[0] = 0;
rc = gcry_sexp_build (&s_hash, NULL, "(data(flags raw)(value %b))",
SHA_DIGEST_LENGTH+1, hash);
if (rc != 0)
{
return -1;
}
rc = gcry_sexp_build (&s_hash, NULL, "(data(flags raw)(value %b))",
SHA_DIGEST_LENGTH+1, hash);
if (rc != 0)
{
return -1;
}
rc = gcry_sexp_build (&s_sig, NULL, "(sig-val(dsa(r %b)(s %b)))",
20, sig, 20, sig + 20);
if (rc != 0)
{
gcry_sexp_release (s_hash);
return -1;
}
rc = gcry_sexp_build (&s_sig, NULL, "(sig-val(dsa(r %b)(s %b)))",
20, sig, 20, sig + 20);
if (rc != 0)
{
gcry_sexp_release (s_hash);
return -1;
}
rc = gcry_pk_verify (s_sig, s_hash, dsactx);
gcry_sexp_release (s_sig);
gcry_sexp_release (s_hash);
rc = gcry_pk_verify (s_sig, s_hash, dsactx);
gcry_sexp_release (s_sig);
gcry_sexp_release (s_hash);
return (rc == 0) ? 0 : -1;
return (rc == 0) ? 0 : -1;
}
int _libssh2_cipher_init (_libssh2_cipher_ctx *h,
@@ -158,8 +159,9 @@ int _libssh2_cipher_init (_libssh2_cipher_ctx *h,
unsigned char *secret,
int encrypt)
{
int mode = 0, keylen, err;
keylen = gcry_cipher_get_algo_keylen (algo);
int mode = 0, err;
int keylen = gcry_cipher_get_algo_keylen (algo);
if (algo != GCRY_CIPHER_ARCFOUR)
{
mode = GCRY_CIPHER_MODE_CBC;
@@ -174,6 +176,7 @@ int _libssh2_cipher_init (_libssh2_cipher_ctx *h,
err = gcry_cipher_setkey (*h, secret, keylen);
if (err)
{
gcry_cipher_close (*h);
return -1;
}
@@ -183,6 +186,7 @@ int _libssh2_cipher_init (_libssh2_cipher_ctx *h,
err = gcry_cipher_setiv (*h, iv, blklen);
if (err)
{
gcry_cipher_close (*h);
return -1;
}
}