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remove some redundant code

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This commit is contained in:
Sascha Schumann 1999-04-25 21:24:07 +00:00
parent 5883d6c221
commit 5ed41f31af
1 changed files with 48 additions and 90 deletions
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138
ext/mcrypt/mcrypt.c
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@ -71,6 +71,33 @@ static mcrypt_global_struct mcryptg;
#endif
#define MCRYPT_SIZE \
bsize = get_block_size(cipher->value.lval); \
nr = (data->value.str.len + bsize - 1) / bsize; \
nsize = nr * bsize
#define MCRYPT_CHECK_TD_CPY \
if(td == -1) { \
php3_error(E_WARNING, MCRYPT_FAILED); \
RETURN_FALSE; \
} \
ndata = ecalloc(nr, bsize); \
memcpy(ndata, data->value.str.val, data->value.str.len)
#define MCRYPT_CHECK_IV \
convert_to_string(iv); \
if(iv->value.str.len != bsize) { \
php3_error(E_WARNING, MCRYPT_IV_WRONG_SIZE); \
RETURN_FALSE; \
}
#define MCRYPT_ACTION(x) \
if(mode->value.lval == 0) \
mcrypt_##x(td, ndata, nsize); \
else \
mdecrypt_##x(td, ndata, nsize); \
end_mcrypt_##x(td)
#define MCRYPT_IV_WRONG_SIZE "The IV paramater must be as long as the blocksize"
#define MCRYPT_FAILED "mcrypt initialization failed"
@ -200,32 +227,13 @@ PHP_FUNCTION(mcrypt_ofb)
convert_to_long(mode);
convert_to_string(data);
convert_to_string(key);
convert_to_string(iv);
bsize = get_block_size(cipher->value.lval);
if(iv->value.str.len != bsize) {
php3_error(E_WARNING, MCRYPT_IV_WRONG_SIZE);
RETURN_FALSE;
}
nr = (data->value.str.len + bsize - 1) / bsize;
nsize = nr * bsize;
MCRYPT_SIZE;
MCRYPT_CHECK_IV;
td = init_mcrypt_ofb(cipher->value.lval, key->value.str.val, key->value.str.len, iv->value.str.val);
if(td == -1) {
php3_error(E_WARNING, MCRYPT_FAILED);
RETURN_FALSE;
}
ndata = ecalloc(nr, bsize);
memcpy(ndata, data->value.str.val, data->value.str.len);
if(mode->value.lval == 0)
mcrypt_ofb(td, ndata, nsize);
else
mdecrypt_ofb(td, ndata, nsize);
end_mcrypt_ofb(td);
MCRYPT_CHECK_TD_CPY;
MCRYPT_ACTION(ofb);
RETURN_STRINGL(ndata, nsize, 0);
}
@ -249,36 +257,18 @@ PHP_FUNCTION(mcrypt_cfb)
convert_to_long(mode);
convert_to_string(data);
convert_to_string(key);
convert_to_string(iv);
bsize = get_block_size(cipher->value.lval);
if(iv->value.str.len != bsize) {
php3_error(E_WARNING, MCRYPT_IV_WRONG_SIZE);
RETURN_FALSE;
}
nr = (data->value.str.len + bsize - 1) / bsize;
nsize = nr * bsize;
MCRYPT_SIZE;
MCRYPT_CHECK_IV;
td = init_mcrypt_cfb(cipher->value.lval, key->value.str.val, key->value.str.len, iv->value.str.val);
if(td == -1) {
php3_error(E_WARNING, MCRYPT_FAILED);
RETURN_FALSE;
}
ndata = ecalloc(nr, bsize);
memcpy(ndata, data->value.str.val, data->value.str.len);
if(mode->value.lval == 0)
mcrypt_cfb(td, ndata, nsize);
else
mdecrypt_cfb(td, ndata, nsize);
end_mcrypt_cfb(td);
MCRYPT_CHECK_TD_CPY;
MCRYPT_ACTION(cfb);
RETURN_STRINGL(ndata, nsize, 0);
}
/* proto mcrypt_cbc(int cipher, string key, string data, int mode [,string iv])
CBC crypt/decrypt data using key key with cipher cipher using optional iv */
PHP_FUNCTION(mcrypt_cbc)
@ -300,39 +290,21 @@ PHP_FUNCTION(mcrypt_cbc)
convert_to_long(mode);
convert_to_string(data);
convert_to_string(key);
bsize = get_block_size(cipher->value.lval);
MCRYPT_SIZE;
if(ac > 4 && mode == 0) {
convert_to_string(iv);
if(iv->value.str.len != bsize) {
php3_error(E_WARNING, MCRYPT_IV_WRONG_SIZE);
RETURN_FALSE;
}
}
nr = (data->value.str.len + bsize - 1) / bsize;
nsize = nr * bsize;
td = init_mcrypt_cbc(cipher->value.lval, key->value.str.val, key->value.str.len);
if(td == -1) {
php3_error(E_WARNING, MCRYPT_FAILED);
RETURN_FALSE;
MCRYPT_CHECK_IV;
}
ndata = ecalloc(nr, bsize);
memcpy(ndata, data->value.str.val, data->value.str.len);
td = init_mcrypt_cbc(cipher->value.lval, key->value.str.val, key->value.str.len);
MCRYPT_CHECK_TD_CPY;
/* iv may be only used in encryption */
if(ac > 4 && mode == 0) {
mcrypt(td, iv->value.str.val);
}
if(mode->value.lval == 0)
mcrypt_cbc(td, ndata, nsize);
else
mdecrypt_cbc(td, ndata, nsize);
end_mcrypt_cbc(td);
MCRYPT_ACTION(cbc);
RETURN_STRINGL(ndata, nsize, 0);
}
@ -356,26 +328,12 @@ PHP_FUNCTION(mcrypt_ecb)
convert_to_long(mode);
convert_to_string(data);
convert_to_string(key);
bsize = get_block_size(cipher->value.lval);
nr = (data->value.str.len + bsize - 1) / bsize;
nsize = nr * bsize;
MCRYPT_SIZE;
td = init_mcrypt_ecb(cipher->value.lval, key->value.str.val, key->value.str.len);
if(td == -1) {
php3_error(E_WARNING, MCRYPT_FAILED);
RETURN_FALSE;
}
ndata = ecalloc(nr, bsize);
memcpy(ndata, data->value.str.val, data->value.str.len);
if(mode->value.lval == 0)
mcrypt_ecb(td, ndata, nsize);
else
mdecrypt_ecb(td, ndata, nsize);
end_mcrypt_ecb(td);
MCRYPT_CHECK_TD_CPY;
MCRYPT_ACTION(ecb);
RETURN_STRINGL(ndata, nsize, 0);
}