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Fix for [-Wtype-limits] compiler warning on 32bits platforms in Sodium extension #5304

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Fix for [-Wtype-limits] compiler warning on 32bits platforms in Sodium extension #5304

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6 changes: 6 additions & 0 deletions ext/sodium/libsodium.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1952,10 +1952,12 @@ PHP_FUNCTION(sodium_crypto_aead_aes256gcm_encrypt)
zend_throw_exception(sodium_exception_ce, "arithmetic overflow", 0);
RETURN_THROWS();
}
#if SIZEOF_SIZE_T != 4
if ((unsigned long long) msg_len > (16ULL * ((1ULL << 32) - 2ULL)) - crypto_aead_aes256gcm_ABYTES) {
zend_throw_exception(sodium_exception_ce, "message too long for a single key", 0);
RETURN_THROWS();
}
#endif
ciphertext_len = msg_len + crypto_aead_aes256gcm_ABYTES;
ciphertext = zend_string_alloc((size_t) ciphertext_len, 0);
if (crypto_aead_aes256gcm_encrypt
Expand Down Expand Up @@ -2011,10 +2013,12 @@ PHP_FUNCTION(sodium_crypto_aead_aes256gcm_decrypt)
if (ciphertext_len < crypto_aead_aes256gcm_ABYTES) {
RETURN_FALSE;
}
#if SIZEOF_SIZE_T != 4
if (ciphertext_len - crypto_aead_aes256gcm_ABYTES > 16ULL * ((1ULL << 32) - 2ULL)) {
zend_argument_error(sodium_exception_ce, 1, "is too long");
RETURN_THROWS();
}
#endif
msg_len = ciphertext_len;
if (msg_len >= SIZE_MAX) {
zend_throw_exception(sodium_exception_ce, "arithmetic overflow", 0);
Expand Down Expand Up @@ -2187,10 +2191,12 @@ PHP_FUNCTION(sodium_crypto_aead_chacha20poly1305_ietf_encrypt)
zend_throw_exception(sodium_exception_ce, "arithmetic overflow", 0);
RETURN_THROWS();
}
#if SIZEOF_SIZE_T != 4
if ((unsigned long long) msg_len > 64ULL * (1ULL << 32) - 64ULL) {
zend_throw_exception(sodium_exception_ce, "message too long for a single key", 0);
RETURN_THROWS();
}
#endif
ciphertext_len = msg_len + crypto_aead_chacha20poly1305_IETF_ABYTES;
ciphertext = zend_string_alloc((size_t) ciphertext_len, 0);
if (crypto_aead_chacha20poly1305_ietf_encrypt
Expand Down