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-rw-r--r--util-src/GNUmakefile4
-rw-r--r--util-src/crand.c6
-rw-r--r--util-src/crypto.c595
-rw-r--r--util-src/encodings.c5
-rw-r--r--util-src/hashes.c236
-rw-r--r--util-src/managed_pointer.h61
-rw-r--r--util-src/net.c5
-rw-r--r--util-src/poll.c5
-rw-r--r--util-src/pposix.c5
-rw-r--r--util-src/ringbuffer.c2
-rw-r--r--util-src/signal.c5
-rw-r--r--util-src/strbitop.c9
-rw-r--r--util-src/struct.c8
-rw-r--r--util-src/table.c44
-rw-r--r--util-src/windows.c5
15 files changed, 868 insertions, 127 deletions
diff --git a/util-src/GNUmakefile b/util-src/GNUmakefile
index 810f39f7..3f539387 100644
--- a/util-src/GNUmakefile
+++ b/util-src/GNUmakefile
@@ -8,7 +8,7 @@ TARGET?=../util/
ALL=encodings.so hashes.so net.so pposix.so signal.so table.so \
ringbuffer.so time.so poll.so compat.so strbitop.so \
- struct.so
+ struct.so crypto.so
ifdef RANDOM
ALL+=crand.so
@@ -28,7 +28,7 @@ clean:
encodings.o: CFLAGS+=$(IDNA_FLAGS)
encodings.so: LDLIBS+=$(IDNA_LIBS)
-hashes.so: LDLIBS+=$(OPENSSL_LIBS)
+crypto.so hashes.so: LDLIBS+=$(OPENSSL_LIBS)
crand.o: CFLAGS+=-DWITH_$(RANDOM)
crand.so: LDLIBS+=$(RANDOM_LIBS)
diff --git a/util-src/crand.c b/util-src/crand.c
index 160ac1f6..c6f0a3ba 100644
--- a/util-src/crand.c
+++ b/util-src/crand.c
@@ -45,7 +45,7 @@
#endif
/* This wasn't present before glibc 2.25 */
-int getrandom(void *buf, size_t buflen, unsigned int flags) {
+static int getrandom(void *buf, size_t buflen, unsigned int flags) {
return syscall(SYS_getrandom, buf, buflen, flags);
}
#else
@@ -66,7 +66,7 @@ int getrandom(void *buf, size_t buflen, unsigned int flags) {
#define SMALLBUFSIZ 32
#endif
-int Lrandom(lua_State *L) {
+static int Lrandom(lua_State *L) {
char smallbuf[SMALLBUFSIZ];
char *buf = &smallbuf[0];
const lua_Integer l = luaL_checkinteger(L, 1);
@@ -124,9 +124,7 @@ int Lrandom(lua_State *L) {
}
int luaopen_util_crand(lua_State *L) {
-#if (LUA_VERSION_NUM > 501)
luaL_checkversion(L);
-#endif
lua_createtable(L, 0, 2);
lua_pushcfunction(L, Lrandom);
diff --git a/util-src/crypto.c b/util-src/crypto.c
new file mode 100644
index 00000000..dce1a740
--- /dev/null
+++ b/util-src/crypto.c
@@ -0,0 +1,595 @@
+/* Prosody IM
+-- Copyright (C) 2022 Matthew Wild
+--
+-- This project is MIT/X11 licensed. Please see the
+-- COPYING file in the source package for more information.
+--
+*/
+
+/*
+* crypto.c
+* Lua library for cryptographic operations using OpenSSL
+*/
+
+#include <string.h>
+#include <stdlib.h>
+
+#ifdef _MSC_VER
+typedef unsigned __int32 uint32_t;
+#else
+#include <inttypes.h>
+#endif
+
+#include "lua.h"
+#include "lauxlib.h"
+#include <openssl/crypto.h>
+#include <openssl/ecdsa.h>
+#include <openssl/err.h>
+#include <openssl/evp.h>
+#include <openssl/obj_mac.h>
+#include <openssl/pem.h>
+
+#if (LUA_VERSION_NUM == 501)
+#define luaL_setfuncs(L, R, N) luaL_register(L, NULL, R)
+#endif
+
+/* The max size of an encoded 'R' or 'S' value. P-521 = 521 bits = 66 bytes */
+#define MAX_ECDSA_SIG_INT_BYTES 66
+
+#include "managed_pointer.h"
+
+#define PKEY_MT_TAG "util.crypto key"
+
+static BIO* new_memory_BIO() {
+ return BIO_new(BIO_s_mem());
+}
+
+MANAGED_POINTER_ALLOCATOR(new_managed_EVP_MD_CTX, EVP_MD_CTX*, EVP_MD_CTX_new, EVP_MD_CTX_free)
+MANAGED_POINTER_ALLOCATOR(new_managed_BIO_s_mem, BIO*, new_memory_BIO, BIO_free)
+MANAGED_POINTER_ALLOCATOR(new_managed_EVP_CIPHER_CTX, EVP_CIPHER_CTX*, EVP_CIPHER_CTX_new, EVP_CIPHER_CTX_free)
+
+#define CRYPTO_KEY_TYPE_ERR "unexpected key type: got '%s', expected '%s'"
+
+static EVP_PKEY* pkey_from_arg(lua_State *L, int idx, const int type, const int require_private) {
+ EVP_PKEY *pkey = *(EVP_PKEY**)luaL_checkudata(L, idx, PKEY_MT_TAG);
+ int got_type;
+ if(type || require_private) {
+ lua_getuservalue(L, idx);
+ if(type != 0) {
+ lua_getfield(L, -1, "type");
+ got_type = lua_tointeger(L, -1);
+ if(got_type != type) {
+ const char *got_key_type_name = OBJ_nid2sn(got_type);
+ const char *want_key_type_name = OBJ_nid2sn(type);
+ lua_pushfstring(L, CRYPTO_KEY_TYPE_ERR, got_key_type_name, want_key_type_name);
+ luaL_argerror(L, idx, lua_tostring(L, -1));
+ }
+ lua_pop(L, 1);
+ }
+ if(require_private != 0) {
+ lua_getfield(L, -1, "private");
+ if(lua_toboolean(L, -1) != 1) {
+ luaL_argerror(L, idx, "private key expected, got public key only");
+ }
+ lua_pop(L, 1);
+ }
+ lua_pop(L, 1);
+ }
+ return pkey;
+}
+
+static int Lpkey_finalizer(lua_State *L) {
+ EVP_PKEY *pkey = pkey_from_arg(L, 1, 0, 0);
+ EVP_PKEY_free(pkey);
+ return 0;
+}
+
+static int Lpkey_meth_get_type(lua_State *L) {
+ EVP_PKEY *pkey = pkey_from_arg(L, 1, 0, 0);
+
+ int key_type = EVP_PKEY_id(pkey);
+ lua_pushstring(L, OBJ_nid2sn(key_type));
+ return 1;
+}
+
+static int base_evp_sign(lua_State *L, const int key_type, const EVP_MD *digest_type) {
+ EVP_PKEY *pkey = pkey_from_arg(L, 1, (key_type!=NID_rsassaPss)?key_type:NID_rsaEncryption, 1);
+ luaL_Buffer sigbuf;
+
+ size_t msg_len;
+ const unsigned char* msg = (unsigned char*)lua_tolstring(L, 2, &msg_len);
+
+ size_t sig_len;
+ unsigned char *sig = NULL;
+ EVP_MD_CTX *md_ctx = new_managed_EVP_MD_CTX(L);
+
+ if(EVP_DigestSignInit(md_ctx, NULL, digest_type, NULL, pkey) != 1) {
+ lua_pushnil(L);
+ return 1;
+ }
+ if(key_type == NID_rsassaPss) {
+ EVP_PKEY_CTX_set_rsa_padding(EVP_MD_CTX_pkey_ctx(md_ctx), RSA_PKCS1_PSS_PADDING);
+ }
+ if(EVP_DigestSign(md_ctx, NULL, &sig_len, msg, msg_len) != 1) {
+ lua_pushnil(L);
+ return 1;
+ }
+
+ // COMPAT w/ Lua 5.1
+ luaL_buffinit(L, &sigbuf);
+ sig = memset(luaL_prepbuffer(&sigbuf), 0, sig_len);
+
+ if(EVP_DigestSign(md_ctx, sig, &sig_len, msg, msg_len) != 1) {
+ lua_pushnil(L);
+ }
+ else {
+ luaL_addsize(&sigbuf, sig_len);
+ luaL_pushresult(&sigbuf);
+ return 1;
+ }
+
+ return 1;
+}
+
+static int base_evp_verify(lua_State *L, const int key_type, const EVP_MD *digest_type) {
+ EVP_PKEY *pkey = pkey_from_arg(L, 1, (key_type!=NID_rsassaPss)?key_type:NID_rsaEncryption, 0);
+
+ size_t msg_len;
+ const unsigned char *msg = (unsigned char*)luaL_checklstring(L, 2, &msg_len);
+
+ size_t sig_len;
+ const unsigned char *sig = (unsigned char*)luaL_checklstring(L, 3, &sig_len);
+
+ EVP_MD_CTX *md_ctx = EVP_MD_CTX_new();
+
+ if(EVP_DigestVerifyInit(md_ctx, NULL, digest_type, NULL, pkey) != 1) {
+ lua_pushnil(L);
+ goto cleanup;
+ }
+ if(key_type == NID_rsassaPss) {
+ EVP_PKEY_CTX_set_rsa_padding(EVP_MD_CTX_pkey_ctx(md_ctx), RSA_PKCS1_PSS_PADDING);
+ }
+ int result = EVP_DigestVerify(md_ctx, sig, sig_len, msg, msg_len);
+ if(result == 0) {
+ lua_pushboolean(L, 0);
+ } else if(result != 1) {
+ lua_pushnil(L);
+ }
+ else {
+ lua_pushboolean(L, 1);
+ }
+cleanup:
+ EVP_MD_CTX_free(md_ctx);
+ return 1;
+}
+
+static int Lpkey_meth_public_pem(lua_State *L) {
+ char *data;
+ size_t bytes;
+ EVP_PKEY *pkey = pkey_from_arg(L, 1, 0, 0);
+ BIO *bio = new_managed_BIO_s_mem(L);
+ if(PEM_write_bio_PUBKEY(bio, pkey)) {
+ bytes = BIO_get_mem_data(bio, &data);
+ if (bytes > 0) {
+ lua_pushlstring(L, data, bytes);
+ }
+ else {
+ lua_pushnil(L);
+ }
+ }
+ else {
+ lua_pushnil(L);
+ }
+ return 1;
+}
+
+static int Lpkey_meth_private_pem(lua_State *L) {
+ char *data;
+ size_t bytes;
+ EVP_PKEY *pkey = pkey_from_arg(L, 1, 0, 1);
+ BIO *bio = new_managed_BIO_s_mem(L);
+
+ if(PEM_write_bio_PrivateKey(bio, pkey, NULL, NULL, 0, NULL, NULL)) {
+ bytes = BIO_get_mem_data(bio, &data);
+ if (bytes > 0) {
+ lua_pushlstring(L, data, bytes);
+ }
+ else {
+ lua_pushnil(L);
+ }
+ }
+ else {
+ lua_pushnil(L);
+ }
+ return 1;
+}
+
+static int push_pkey(lua_State *L, EVP_PKEY *pkey, const int type, const int privkey) {
+ EVP_PKEY **ud = lua_newuserdata(L, sizeof(EVP_PKEY*));
+ *ud = pkey;
+ luaL_newmetatable(L, PKEY_MT_TAG);
+ lua_setmetatable(L, -2);
+
+ /* Set some info about the key and attach it as a user value */
+ lua_newtable(L);
+ if(type != 0) {
+ lua_pushinteger(L, type);
+ lua_setfield(L, -2, "type");
+ }
+ if(privkey != 0) {
+ lua_pushboolean(L, 1);
+ lua_setfield(L, -2, "private");
+ }
+ lua_setuservalue(L, -2);
+ return 1;
+}
+
+static int Lgenerate_ed25519_keypair(lua_State *L) {
+ EVP_PKEY *pkey = NULL;
+ EVP_PKEY_CTX *pctx = EVP_PKEY_CTX_new_id(EVP_PKEY_ED25519, NULL);
+
+ /* Generate key */
+ EVP_PKEY_keygen_init(pctx);
+ EVP_PKEY_keygen(pctx, &pkey);
+ EVP_PKEY_CTX_free(pctx);
+
+ push_pkey(L, pkey, NID_ED25519, 1);
+ return 1;
+}
+
+static int Limport_private_pem(lua_State *L) {
+ EVP_PKEY *pkey = NULL;
+
+ size_t privkey_bytes;
+ const char* privkey_data;
+ BIO *bio = new_managed_BIO_s_mem(L);
+
+ privkey_data = luaL_checklstring(L, 1, &privkey_bytes);
+ BIO_write(bio, privkey_data, privkey_bytes);
+ pkey = PEM_read_bio_PrivateKey(bio, NULL, NULL, NULL);
+ if (pkey) {
+ push_pkey(L, pkey, EVP_PKEY_id(pkey), 1);
+ }
+ else {
+ lua_pushnil(L);
+ }
+
+ return 1;
+}
+
+static int Limport_public_pem(lua_State *L) {
+ EVP_PKEY *pkey = NULL;
+
+ size_t pubkey_bytes;
+ const char* pubkey_data;
+ BIO *bio = new_managed_BIO_s_mem(L);
+
+ pubkey_data = luaL_checklstring(L, 1, &pubkey_bytes);
+ BIO_write(bio, pubkey_data, pubkey_bytes);
+ pkey = PEM_read_bio_PUBKEY(bio, NULL, NULL, NULL);
+ if (pkey) {
+ push_pkey(L, pkey, EVP_PKEY_id(pkey), 0);
+ }
+ else {
+ lua_pushnil(L);
+ }
+
+ return 1;
+}
+
+static int Led25519_sign(lua_State *L) {
+ return base_evp_sign(L, NID_ED25519, NULL);
+}
+
+static int Led25519_verify(lua_State *L) {
+ return base_evp_verify(L, NID_ED25519, NULL);
+}
+
+/* gcm_encrypt(key, iv, plaintext) */
+static int Laes_gcm_encrypt(lua_State *L, const EVP_CIPHER *cipher, const unsigned char expected_key_len) {
+ EVP_CIPHER_CTX *ctx;
+ luaL_Buffer ciphertext_buffer;
+
+ size_t key_len, iv_len, plaintext_len;
+ int ciphertext_len, final_len;
+
+ const unsigned char *key = (unsigned char*)luaL_checklstring(L, 1, &key_len);
+ const unsigned char *iv = (unsigned char*)luaL_checklstring(L, 2, &iv_len);
+ const unsigned char *plaintext = (unsigned char*)luaL_checklstring(L, 3, &plaintext_len);
+
+ if(key_len != expected_key_len) {
+ return luaL_error(L, "key must be %d bytes", expected_key_len);
+ }
+ luaL_argcheck(L, iv_len == 12, 2, "iv must be 12 bytes");
+ if(lua_gettop(L) > 3) {
+ return luaL_error(L, "Expected 3 arguments, got %d", lua_gettop(L));
+ }
+
+ // Create and initialise the context
+ ctx = new_managed_EVP_CIPHER_CTX(L);
+
+ // Initialise the encryption operation
+ if(1 != EVP_EncryptInit_ex(ctx, cipher, NULL, NULL, NULL)) {
+ return luaL_error(L, "Error while initializing encryption engine");
+ }
+
+ // Initialise key and IV
+ if(1 != EVP_EncryptInit_ex(ctx, NULL, NULL, key, iv)) {
+ return luaL_error(L, "Error while initializing key/iv");
+ }
+
+ luaL_buffinit(L, &ciphertext_buffer);
+ unsigned char *ciphertext = (unsigned char*)luaL_prepbuffsize(&ciphertext_buffer, plaintext_len+16);
+
+ if(1 != EVP_EncryptUpdate(ctx, ciphertext, &ciphertext_len, plaintext, plaintext_len)) {
+ return luaL_error(L, "Error while encrypting data");
+ }
+
+ /*
+ * Finalise the encryption. Normally ciphertext bytes may be written at
+ * this stage, but this does not occur in GCM mode
+ */
+ if(1 != EVP_EncryptFinal_ex(ctx, ciphertext + ciphertext_len, &final_len)) {
+ return luaL_error(L, "Error while encrypting final data");
+ }
+ if(final_len != 0) {
+ return luaL_error(L, "Non-zero final data");
+ }
+
+ /* Get the tag */
+ if(1 != EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_AEAD_GET_TAG, 16, ciphertext + ciphertext_len)) {
+ return luaL_error(L, "Unable to read AEAD tag of encrypted data");
+ }
+
+ luaL_addsize(&ciphertext_buffer, ciphertext_len + 16);
+ luaL_pushresult(&ciphertext_buffer);
+
+ return 1;
+}
+
+static int Laes_128_gcm_encrypt(lua_State *L) {
+ return Laes_gcm_encrypt(L, EVP_aes_128_gcm(), 16);
+}
+
+static int Laes_256_gcm_encrypt(lua_State *L) {
+ return Laes_gcm_encrypt(L, EVP_aes_256_gcm(), 32);
+}
+
+/* gcm_decrypt(key, iv, ciphertext) */
+static int Laes_gcm_decrypt(lua_State *L, const EVP_CIPHER *cipher, const unsigned char expected_key_len) {
+ EVP_CIPHER_CTX *ctx;
+ luaL_Buffer plaintext_buffer;
+
+ size_t key_len, iv_len, ciphertext_len;
+ int plaintext_len, final_len;
+
+ const unsigned char *key = (unsigned char*)luaL_checklstring(L, 1, &key_len);
+ const unsigned char *iv = (unsigned char*)luaL_checklstring(L, 2, &iv_len);
+ const unsigned char *ciphertext = (unsigned char*)luaL_checklstring(L, 3, &ciphertext_len);
+
+ if(key_len != expected_key_len) {
+ return luaL_error(L, "key must be %d bytes", expected_key_len);
+ }
+ luaL_argcheck(L, iv_len == 12, 2, "iv must be 12 bytes");
+ luaL_argcheck(L, ciphertext_len > 16, 3, "ciphertext must be at least 16 bytes (including tag)");
+ if(lua_gettop(L) > 3) {
+ return luaL_error(L, "Expected 3 arguments, got %d", lua_gettop(L));
+ }
+
+ /* Create and initialise the context */
+ ctx = new_managed_EVP_CIPHER_CTX(L);
+
+ /* Initialise the decryption operation. */
+ if(!EVP_DecryptInit_ex(ctx, cipher, NULL, NULL, NULL)) {
+ return luaL_error(L, "Error while initializing decryption engine");
+ }
+
+ /* Initialise key and IV */
+ if(!EVP_DecryptInit_ex(ctx, NULL, NULL, key, iv)) {
+ return luaL_error(L, "Error while initializing key/iv");
+ }
+
+ luaL_buffinit(L, &plaintext_buffer);
+ unsigned char *plaintext = (unsigned char*)luaL_prepbuffsize(&plaintext_buffer, ciphertext_len);
+
+ /*
+ * Provide the message to be decrypted, and obtain the plaintext output.
+ * EVP_DecryptUpdate can be called multiple times if necessary
+ */
+ if(!EVP_DecryptUpdate(ctx, plaintext, &plaintext_len, ciphertext, ciphertext_len-16)) {
+ return luaL_error(L, "Error while decrypting data");
+ }
+
+ /* Set expected tag value. Works in OpenSSL 1.0.1d and later */
+ if(!EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_AEAD_SET_TAG, 16, (unsigned char*)ciphertext + (ciphertext_len-16))) {
+ return luaL_error(L, "Error while processing authentication tag");
+ }
+
+ /*
+ * Finalise the decryption. A positive return value indicates success,
+ * anything else is a failure - the plaintext is not trustworthy.
+ */
+ int ret = EVP_DecryptFinal_ex(ctx, plaintext + plaintext_len, &final_len);
+
+ if(ret <= 0) {
+ /* Verify failed */
+ lua_pushnil(L);
+ lua_pushliteral(L, "verify-failed");
+ return 2;
+ }
+
+ luaL_addsize(&plaintext_buffer, plaintext_len + final_len);
+ luaL_pushresult(&plaintext_buffer);
+ return 1;
+}
+
+static int Laes_128_gcm_decrypt(lua_State *L) {
+ return Laes_gcm_decrypt(L, EVP_aes_128_gcm(), 16);
+}
+
+static int Laes_256_gcm_decrypt(lua_State *L) {
+ return Laes_gcm_decrypt(L, EVP_aes_256_gcm(), 32);
+}
+
+/* r, s = parse_ecdsa_sig(sig_der) */
+static int Lparse_ecdsa_signature(lua_State *L) {
+ ECDSA_SIG *sig;
+ size_t sig_der_len;
+ const unsigned char *sig_der = (unsigned char*)luaL_checklstring(L, 1, &sig_der_len);
+ const size_t sig_int_bytes = luaL_checkinteger(L, 2);
+ const BIGNUM *r, *s;
+ int rlen, slen;
+ unsigned char rb[MAX_ECDSA_SIG_INT_BYTES];
+ unsigned char sb[MAX_ECDSA_SIG_INT_BYTES];
+
+ if(sig_int_bytes > MAX_ECDSA_SIG_INT_BYTES) {
+ luaL_error(L, "requested signature size exceeds supported limit");
+ }
+
+ sig = d2i_ECDSA_SIG(NULL, &sig_der, sig_der_len);
+
+ if(sig == NULL) {
+ lua_pushnil(L);
+ return 1;
+ }
+
+ ECDSA_SIG_get0(sig, &r, &s);
+
+ rlen = BN_bn2binpad(r, rb, sig_int_bytes);
+ slen = BN_bn2binpad(s, sb, sig_int_bytes);
+
+ if (rlen == -1 || slen == -1) {
+ ECDSA_SIG_free(sig);
+ luaL_error(L, "encoded integers exceed requested size");
+ }
+
+ ECDSA_SIG_free(sig);
+
+ lua_pushlstring(L, (const char*)rb, rlen);
+ lua_pushlstring(L, (const char*)sb, slen);
+
+ return 2;
+}
+
+/* sig_der = build_ecdsa_signature(r, s) */
+static int Lbuild_ecdsa_signature(lua_State *L) {
+ ECDSA_SIG *sig = ECDSA_SIG_new();
+ BIGNUM *r, *s;
+ luaL_Buffer sigbuf;
+
+ size_t rlen, slen;
+ const unsigned char *rbin, *sbin;
+
+ rbin = (unsigned char*)luaL_checklstring(L, 1, &rlen);
+ sbin = (unsigned char*)luaL_checklstring(L, 2, &slen);
+
+ r = BN_bin2bn(rbin, (int)rlen, NULL);
+ s = BN_bin2bn(sbin, (int)slen, NULL);
+
+ ECDSA_SIG_set0(sig, r, s);
+
+ luaL_buffinit(L, &sigbuf);
+
+ /* DER structure of an ECDSA signature has 7 bytes plus the integers themselves,
+ which may gain an extra byte once encoded */
+ unsigned char *buffer = (unsigned char*)luaL_prepbuffsize(&sigbuf, (rlen+1)+(slen+1)+7);
+ int len = i2d_ECDSA_SIG(sig, &buffer);
+ luaL_addsize(&sigbuf, len);
+ luaL_pushresult(&sigbuf);
+
+ ECDSA_SIG_free(sig);
+
+ return 1;
+}
+
+#define REG_SIGN_VERIFY(algorithm, digest) \
+ { #algorithm "_" #digest "_sign", L ## algorithm ## _ ## digest ## _sign },\
+ { #algorithm "_" #digest "_verify", L ## algorithm ## _ ## digest ## _verify },
+
+#define IMPL_SIGN_VERIFY(algorithm, key_type, digest) \
+ static int L ## algorithm ## _ ## digest ## _sign(lua_State *L) { \
+ return base_evp_sign(L, key_type, EVP_ ## digest()); \
+ } \
+ static int L ## algorithm ## _ ## digest ## _verify(lua_State *L) { \
+ return base_evp_verify(L, key_type, EVP_ ## digest()); \
+ }
+
+IMPL_SIGN_VERIFY(ecdsa, NID_X9_62_id_ecPublicKey, sha256)
+IMPL_SIGN_VERIFY(ecdsa, NID_X9_62_id_ecPublicKey, sha384)
+IMPL_SIGN_VERIFY(ecdsa, NID_X9_62_id_ecPublicKey, sha512)
+
+IMPL_SIGN_VERIFY(rsassa_pkcs1, NID_rsaEncryption, sha256)
+IMPL_SIGN_VERIFY(rsassa_pkcs1, NID_rsaEncryption, sha384)
+IMPL_SIGN_VERIFY(rsassa_pkcs1, NID_rsaEncryption, sha512)
+
+IMPL_SIGN_VERIFY(rsassa_pss, NID_rsassaPss, sha256)
+IMPL_SIGN_VERIFY(rsassa_pss, NID_rsassaPss, sha384)
+IMPL_SIGN_VERIFY(rsassa_pss, NID_rsassaPss, sha512)
+
+static const luaL_Reg Reg[] = {
+ { "ed25519_sign", Led25519_sign },
+ { "ed25519_verify", Led25519_verify },
+
+ REG_SIGN_VERIFY(ecdsa, sha256)
+ REG_SIGN_VERIFY(ecdsa, sha384)
+ REG_SIGN_VERIFY(ecdsa, sha512)
+
+ REG_SIGN_VERIFY(rsassa_pkcs1, sha256)
+ REG_SIGN_VERIFY(rsassa_pkcs1, sha384)
+ REG_SIGN_VERIFY(rsassa_pkcs1, sha512)
+
+ REG_SIGN_VERIFY(rsassa_pss, sha256)
+ REG_SIGN_VERIFY(rsassa_pss, sha384)
+ REG_SIGN_VERIFY(rsassa_pss, sha512)
+
+ { "aes_128_gcm_encrypt", Laes_128_gcm_encrypt },
+ { "aes_128_gcm_decrypt", Laes_128_gcm_decrypt },
+ { "aes_256_gcm_encrypt", Laes_256_gcm_encrypt },
+ { "aes_256_gcm_decrypt", Laes_256_gcm_decrypt },
+
+ { "generate_ed25519_keypair", Lgenerate_ed25519_keypair },
+
+ { "import_private_pem", Limport_private_pem },
+ { "import_public_pem", Limport_public_pem },
+
+ { "parse_ecdsa_signature", Lparse_ecdsa_signature },
+ { "build_ecdsa_signature", Lbuild_ecdsa_signature },
+ { NULL, NULL }
+};
+
+static const luaL_Reg KeyMethods[] = {
+ { "private_pem", Lpkey_meth_private_pem },
+ { "public_pem", Lpkey_meth_public_pem },
+ { "get_type", Lpkey_meth_get_type },
+ { NULL, NULL }
+};
+
+static const luaL_Reg KeyMetatable[] = {
+ { "__gc", Lpkey_finalizer },
+ { NULL, NULL }
+};
+
+LUALIB_API int luaopen_util_crypto(lua_State *L) {
+#if (LUA_VERSION_NUM > 501)
+ luaL_checkversion(L);
+#endif
+
+ /* Initialize pkey metatable */
+ luaL_newmetatable(L, PKEY_MT_TAG);
+ luaL_setfuncs(L, KeyMetatable, 0);
+ lua_newtable(L);
+ luaL_setfuncs(L, KeyMethods, 0);
+ lua_setfield(L, -2, "__index");
+ lua_pop(L, 1);
+
+ /* Initialize lib table */
+ lua_newtable(L);
+ luaL_setfuncs(L, Reg, 0);
+ lua_pushliteral(L, "-3.14");
+ lua_setfield(L, -2, "version");
+#ifdef OPENSSL_VERSION
+ lua_pushstring(L, OpenSSL_version(OPENSSL_VERSION));
+ lua_setfield(L, -2, "_LIBCRYPTO_VERSION");
+#endif
+ return 1;
+}
diff --git a/util-src/encodings.c b/util-src/encodings.c
index 72264da8..157d8526 100644
--- a/util-src/encodings.c
+++ b/util-src/encodings.c
@@ -21,9 +21,6 @@
#include "lua.h"
#include "lauxlib.h"
-#if (LUA_VERSION_NUM == 501)
-#define luaL_setfuncs(L, R, N) luaL_register(L, NULL, R)
-#endif
#if (LUA_VERSION_NUM < 504)
#define luaL_pushfail lua_pushnil
#endif
@@ -616,9 +613,7 @@ static const luaL_Reg Reg_idna[] = {
/***************** end *****************/
LUALIB_API int luaopen_util_encodings(lua_State *L) {
-#if (LUA_VERSION_NUM > 501)
luaL_checkversion(L);
-#endif
#ifdef USE_STRINGPREP_ICU
init_icu();
#endif
diff --git a/util-src/hashes.c b/util-src/hashes.c
index 8eefcd6b..5d67ca63 100644
--- a/util-src/hashes.c
+++ b/util-src/hashes.c
@@ -28,13 +28,8 @@ typedef unsigned __int32 uint32_t;
#include <openssl/md5.h>
#include <openssl/hmac.h>
#include <openssl/evp.h>
+#include <openssl/err.h>
-#if (LUA_VERSION_NUM == 501)
-#define luaL_setfuncs(L, R, N) luaL_register(L, NULL, R)
-#endif
-
-#define HMAC_IPAD 0x36363636
-#define HMAC_OPAD 0x5c5c5c5c
static const char *hex_tab = "0123456789abcdef";
static void toHex(const unsigned char *in, int length, unsigned char *out) {
@@ -46,94 +41,179 @@ static void toHex(const unsigned char *in, int length, unsigned char *out) {
}
}
-#define MAKE_HASH_FUNCTION(myFunc, func, size) \
-static int myFunc(lua_State *L) { \
- size_t len; \
- const char *s = luaL_checklstring(L, 1, &len); \
- int hex_out = lua_toboolean(L, 2); \
- unsigned char hash[size], result[size*2]; \
- func((const unsigned char*)s, len, hash); \
- if (hex_out) { \
- toHex(hash, size, result); \
- lua_pushlstring(L, (char*)result, size*2); \
- } else { \
- lua_pushlstring(L, (char*)hash, size);\
- } \
- return 1; \
-}
-
-MAKE_HASH_FUNCTION(Lsha1, SHA1, SHA_DIGEST_LENGTH)
-MAKE_HASH_FUNCTION(Lsha224, SHA224, SHA224_DIGEST_LENGTH)
-MAKE_HASH_FUNCTION(Lsha256, SHA256, SHA256_DIGEST_LENGTH)
-MAKE_HASH_FUNCTION(Lsha384, SHA384, SHA384_DIGEST_LENGTH)
-MAKE_HASH_FUNCTION(Lsha512, SHA512, SHA512_DIGEST_LENGTH)
-MAKE_HASH_FUNCTION(Lmd5, MD5, MD5_DIGEST_LENGTH)
-
-struct hash_desc {
- int (*Init)(void *);
- int (*Update)(void *, const void *, size_t);
- int (*Final)(unsigned char *, void *);
- size_t digestLength;
- void *ctx, *ctxo;
-};
+static int Levp_hash(lua_State *L, const EVP_MD *evp) {
+ size_t len;
+ unsigned int size = EVP_MAX_MD_SIZE;
+ const char *s = luaL_checklstring(L, 1, &len);
+ int hex_out = lua_toboolean(L, 2);
-#define MAKE_HMAC_FUNCTION(myFunc, evp, size, type) \
-static int myFunc(lua_State *L) { \
- unsigned char hash[size], result[2*size]; \
- size_t key_len, msg_len; \
- unsigned int out_len; \
- const char *key = luaL_checklstring(L, 1, &key_len); \
- const char *msg = luaL_checklstring(L, 2, &msg_len); \
- const int hex_out = lua_toboolean(L, 3); \
- HMAC(evp(), key, key_len, (const unsigned char*)msg, msg_len, (unsigned char*)hash, &out_len); \
- if (hex_out) { \
- toHex(hash, out_len, result); \
- lua_pushlstring(L, (char*)result, out_len*2); \
- } else { \
- lua_pushlstring(L, (char*)hash, out_len); \
- } \
- return 1; \
-}
-
-MAKE_HMAC_FUNCTION(Lhmac_sha1, EVP_sha1, SHA_DIGEST_LENGTH, SHA_CTX)
-MAKE_HMAC_FUNCTION(Lhmac_sha256, EVP_sha256, SHA256_DIGEST_LENGTH, SHA256_CTX)
-MAKE_HMAC_FUNCTION(Lhmac_sha512, EVP_sha512, SHA512_DIGEST_LENGTH, SHA512_CTX)
-MAKE_HMAC_FUNCTION(Lhmac_md5, EVP_md5, MD5_DIGEST_LENGTH, MD5_CTX)
+ unsigned char hash[EVP_MAX_MD_SIZE], result[EVP_MAX_MD_SIZE * 2];
-static int Lpbkdf2_sha1(lua_State *L) {
- unsigned char out[SHA_DIGEST_LENGTH];
+ EVP_MD_CTX *ctx = EVP_MD_CTX_new();
- size_t pass_len, salt_len;
- const char *pass = luaL_checklstring(L, 1, &pass_len);
- const unsigned char *salt = (unsigned char *)luaL_checklstring(L, 2, &salt_len);
- const int iter = luaL_checkinteger(L, 3);
+ if(ctx == NULL) {
+ goto fail;
+ }
- if(PKCS5_PBKDF2_HMAC(pass, pass_len, salt, salt_len, iter, EVP_sha1(), SHA_DIGEST_LENGTH, out) == 0) {
- return luaL_error(L, "PKCS5_PBKDF2_HMAC() failed");
+ if(!EVP_DigestInit_ex(ctx, evp, NULL)) {
+ goto fail;
}
- lua_pushlstring(L, (char *)out, SHA_DIGEST_LENGTH);
+ if(!EVP_DigestUpdate(ctx, s, len)) {
+ goto fail;
+ }
+
+ if(!EVP_DigestFinal_ex(ctx, hash, &size)) {
+ goto fail;
+ }
+
+ EVP_MD_CTX_free(ctx);
+
+ if(hex_out) {
+ toHex(hash, size, result);
+ lua_pushlstring(L, (char *)result, size * 2);
+ } else {
+ lua_pushlstring(L, (char *)hash, size);
+ }
return 1;
+
+fail:
+ EVP_MD_CTX_free(ctx);
+ return luaL_error(L, ERR_error_string(ERR_get_error(), NULL));
}
+static int Lsha1(lua_State *L) {
+ return Levp_hash(L, EVP_sha1());
+}
+
+static int Lsha224(lua_State *L) {
+ return Levp_hash(L, EVP_sha224());
+}
+
+static int Lsha256(lua_State *L) {
+ return Levp_hash(L, EVP_sha256());
+}
+
+static int Lsha384(lua_State *L) {
+ return Levp_hash(L, EVP_sha384());
+}
+
+static int Lsha512(lua_State *L) {
+ return Levp_hash(L, EVP_sha512());
+}
+
+static int Lmd5(lua_State *L) {
+ return Levp_hash(L, EVP_md5());
+}
+
+static int Lblake2s256(lua_State *L) {
+ return Levp_hash(L, EVP_blake2s256());
+}
+
+static int Lblake2b512(lua_State *L) {
+ return Levp_hash(L, EVP_blake2b512());
+}
+
+static int Lsha3_256(lua_State *L) {
+ return Levp_hash(L, EVP_sha3_256());
+}
+
+static int Lsha3_512(lua_State *L) {
+ return Levp_hash(L, EVP_sha3_512());
+}
+
+static int Levp_hmac(lua_State *L, const EVP_MD *evp) {
+ unsigned char hash[EVP_MAX_MD_SIZE], result[EVP_MAX_MD_SIZE * 2];
+ size_t key_len, msg_len;
+ unsigned int out_len = EVP_MAX_MD_SIZE;
+ const char *key = luaL_checklstring(L, 1, &key_len);
+ const char *msg = luaL_checklstring(L, 2, &msg_len);
+ const int hex_out = lua_toboolean(L, 3);
+
+ if(HMAC(evp, key, key_len, (const unsigned char*)msg, msg_len, (unsigned char*)hash, &out_len) == NULL) {
+ goto fail;
+ }
+
+ if(hex_out) {
+ toHex(hash, out_len, result);
+ lua_pushlstring(L, (char *)result, out_len * 2);
+ } else {
+ lua_pushlstring(L, (char *)hash, out_len);
+ }
+
+ return 1;
+
+fail:
+ return luaL_error(L, ERR_error_string(ERR_get_error(), NULL));
+}
+
+static int Lhmac_sha1(lua_State *L) {
+ return Levp_hmac(L, EVP_sha1());
+}
+
+static int Lhmac_sha224(lua_State *L) {
+ return Levp_hmac(L, EVP_sha224());
+}
+
+static int Lhmac_sha256(lua_State *L) {
+ return Levp_hmac(L, EVP_sha256());
+}
+
+static int Lhmac_sha384(lua_State *L) {
+ return Levp_hmac(L, EVP_sha384());
+}
+
+static int Lhmac_sha512(lua_State *L) {
+ return Levp_hmac(L, EVP_sha512());
+}
+
+static int Lhmac_md5(lua_State *L) {
+ return Levp_hmac(L, EVP_md5());
+}
+
+static int Lhmac_sha3_256(lua_State *L) {
+ return Levp_hmac(L, EVP_sha3_256());
+}
+
+static int Lhmac_sha3_512(lua_State *L) {
+ return Levp_hmac(L, EVP_sha3_512());
+}
+
+static int Lhmac_blake2s256(lua_State *L) {
+ return Levp_hmac(L, EVP_blake2s256());
+}
+
+static int Lhmac_blake2b512(lua_State *L) {
+ return Levp_hmac(L, EVP_blake2b512());
+}
-static int Lpbkdf2_sha256(lua_State *L) {
- unsigned char out[SHA256_DIGEST_LENGTH];
+
+static int Levp_pbkdf2(lua_State *L, const EVP_MD *evp, size_t out_len) {
+ unsigned char out[EVP_MAX_MD_SIZE];
size_t pass_len, salt_len;
const char *pass = luaL_checklstring(L, 1, &pass_len);
const unsigned char *salt = (unsigned char *)luaL_checklstring(L, 2, &salt_len);
const int iter = luaL_checkinteger(L, 3);
- if(PKCS5_PBKDF2_HMAC(pass, pass_len, salt, salt_len, iter, EVP_sha256(), SHA256_DIGEST_LENGTH, out) == 0) {
- return luaL_error(L, "PKCS5_PBKDF2_HMAC() failed");
+ if(PKCS5_PBKDF2_HMAC(pass, pass_len, salt, salt_len, iter, evp, out_len, out) == 0) {
+ return luaL_error(L, ERR_error_string(ERR_get_error(), NULL));
}
- lua_pushlstring(L, (char *)out, SHA256_DIGEST_LENGTH);
+ lua_pushlstring(L, (char *)out, out_len);
+
return 1;
}
+static int Lpbkdf2_sha1(lua_State *L) {
+ return Levp_pbkdf2(L, EVP_sha1(), SHA_DIGEST_LENGTH);
+}
+
+static int Lpbkdf2_sha256(lua_State *L) {
+ return Levp_pbkdf2(L, EVP_sha256(), SHA256_DIGEST_LENGTH);
+}
+
static int Lhash_equals(lua_State *L) {
size_t len1, len2;
const char *s1 = luaL_checklstring(L, 1, &len1);
@@ -153,10 +233,20 @@ static const luaL_Reg Reg[] = {
{ "sha384", Lsha384 },
{ "sha512", Lsha512 },
{ "md5", Lmd5 },
+ { "sha3_256", Lsha3_256 },
+ { "sha3_512", Lsha3_512 },
+ { "blake2s256", Lblake2s256 },
+ { "blake2b512", Lblake2b512 },
{ "hmac_sha1", Lhmac_sha1 },
+ { "hmac_sha224", Lhmac_sha224 },
{ "hmac_sha256", Lhmac_sha256 },
+ { "hmac_sha384", Lhmac_sha384 },
{ "hmac_sha512", Lhmac_sha512 },
{ "hmac_md5", Lhmac_md5 },
+ { "hmac_sha3_256", Lhmac_sha3_256 },
+ { "hmac_sha3_512", Lhmac_sha3_512 },
+ { "hmac_blake2s256", Lhmac_blake2s256 },
+ { "hmac_blake2b512", Lhmac_blake2b512 },
{ "scram_Hi_sha1", Lpbkdf2_sha1 }, /* COMPAT */
{ "pbkdf2_hmac_sha1", Lpbkdf2_sha1 },
{ "pbkdf2_hmac_sha256", Lpbkdf2_sha256 },
@@ -165,9 +255,7 @@ static const luaL_Reg Reg[] = {
};
LUALIB_API int luaopen_util_hashes(lua_State *L) {
-#if (LUA_VERSION_NUM > 501)
luaL_checkversion(L);
-#endif
lua_newtable(L);
luaL_setfuncs(L, Reg, 0);
lua_pushliteral(L, "-3.14");
diff --git a/util-src/managed_pointer.h b/util-src/managed_pointer.h
new file mode 100644
index 00000000..213b5fd7
--- /dev/null
+++ b/util-src/managed_pointer.h
@@ -0,0 +1,61 @@
+/* managed_pointer.h
+
+These macros allow wrapping an allocator/deallocator into an object that is
+owned and managed by the Lua garbage collector.
+
+Why? It is too easy to leak objects that need to be manually released, especially
+when dealing with the Lua API which can throw errors from many operations.
+
+USAGE
+-----
+
+For example, given an object that can be created or released with the following
+functions:
+
+ fancy_buffer* new_buffer();
+ void free_buffer(fancy_buffer* p_buffer)
+
+You could declare a managed version like so:
+
+ MANAGED_POINTER_ALLOCATOR(new_managed_buffer, fancy_buffer*, new_buffer, free_buffer)
+
+And then, when you need to create a new fancy_buffer in your code:
+
+ fancy_buffer *my_buffer = new_managed_buffer(L);
+
+NOTES
+-----
+
+Managed objects MUST NOT be freed manually. They will automatically be
+freed during the next GC sweep after your function exits (even if via an error).
+
+The managed object is pushed onto the stack, but should generally be ignored,
+but you'll need to bear this in mind when creating managed pointers in the
+middle of a sequence of stack operations.
+*/
+
+#define MANAGED_POINTER_MT(wrapped_type) #wrapped_type "_managedptr_mt"
+
+#define MANAGED_POINTER_ALLOCATOR(name, wrapped_type, wrapped_alloc, wrapped_free) \
+ static int _release_ ## name(lua_State *L) { \
+ wrapped_type *p = (wrapped_type*)lua_topointer(L, 1); \
+ if(*p != NULL) { \
+ wrapped_free(*p); \
+ } \
+ return 0; \
+ } \
+ static wrapped_type name(lua_State *L) { \
+ wrapped_type *p = (wrapped_type*)lua_newuserdata(L, sizeof(wrapped_type)); \
+ if(luaL_newmetatable(L, MANAGED_POINTER_MT(wrapped_type)) != 0) { \
+ lua_pushcfunction(L, _release_ ## name); \
+ lua_setfield(L, -2, "__gc"); \
+ } \
+ lua_setmetatable(L, -2); \
+ *p = wrapped_alloc(); \
+ if(*p == NULL) { \
+ lua_pushliteral(L, "not enough memory"); \
+ lua_error(L); \
+ } \
+ return *p; \
+ }
+
diff --git a/util-src/net.c b/util-src/net.c
index d786e885..96b50e7b 100644
--- a/util-src/net.c
+++ b/util-src/net.c
@@ -30,9 +30,6 @@
#include <lua.h>
#include <lauxlib.h>
-#if (LUA_VERSION_NUM == 501)
-#define luaL_setfuncs(L, R, N) luaL_register(L, NULL, R)
-#endif
#if (LUA_VERSION_NUM < 504)
#define luaL_pushfail lua_pushnil
#endif
@@ -193,9 +190,7 @@ static int lc_ntop(lua_State *L) {
}
int luaopen_util_net(lua_State *L) {
-#if (LUA_VERSION_NUM > 501)
luaL_checkversion(L);
-#endif
luaL_Reg exports[] = {
{ "local_addresses", lc_local_addresses },
{ "pton", lc_pton },
diff --git a/util-src/poll.c b/util-src/poll.c
index 81caa953..d7c1f9e1 100644
--- a/util-src/poll.c
+++ b/util-src/poll.c
@@ -44,9 +44,6 @@
#define STATE_MT "util.poll<" POLL_BACKEND ">"
-#if (LUA_VERSION_NUM == 501)
-#define luaL_setmetatable(L, tname) luaL_getmetatable(L, tname); lua_setmetatable(L, -2)
-#endif
#if (LUA_VERSION_NUM < 504)
#define luaL_pushfail lua_pushnil
#endif
@@ -564,9 +561,7 @@ static int Lnew(lua_State *L) {
* Open library
*/
int luaopen_util_poll(lua_State *L) {
-#if (LUA_VERSION_NUM > 501)
luaL_checkversion(L);
-#endif
luaL_newmetatable(L, STATE_MT);
{
diff --git a/util-src/pposix.c b/util-src/pposix.c
index a8e0720f..aac27d35 100644
--- a/util-src/pposix.c
+++ b/util-src/pposix.c
@@ -58,9 +58,6 @@
#include "lualib.h"
#include "lauxlib.h"
-#if (LUA_VERSION_NUM == 501)
-#define luaL_setfuncs(L, R, N) luaL_register(L, NULL, R)
-#endif
#if (LUA_VERSION_NUM < 503)
#define lua_isinteger(L, n) lua_isnumber(L, n)
#endif
@@ -829,9 +826,7 @@ static int lc_isatty(lua_State *L) {
/* Register functions */
int luaopen_util_pposix(lua_State *L) {
-#if (LUA_VERSION_NUM > 501)
luaL_checkversion(L);
-#endif
luaL_Reg exports[] = {
{ "abort", lc_abort },
diff --git a/util-src/ringbuffer.c b/util-src/ringbuffer.c
index 0f250c12..95c62de9 100644
--- a/util-src/ringbuffer.c
+++ b/util-src/ringbuffer.c
@@ -314,9 +314,7 @@ static int rb_new(lua_State *L) {
}
int luaopen_util_ringbuffer(lua_State *L) {
-#if (LUA_VERSION_NUM > 501)
luaL_checkversion(L);
-#endif
if(luaL_newmetatable(L, "ringbuffer_mt")) {
lua_pushcfunction(L, rb_tostring);
diff --git a/util-src/signal.c b/util-src/signal.c
index 1a398fa0..b5ba16a9 100644
--- a/util-src/signal.c
+++ b/util-src/signal.c
@@ -36,9 +36,6 @@
#include "lua.h"
#include "lauxlib.h"
-#if (LUA_VERSION_NUM == 501)
-#define luaL_setfuncs(L, R, N) luaL_register(L, NULL, R)
-#endif
#if (LUA_VERSION_NUM < 503)
#define lua_isinteger(L, n) lua_isnumber(L, n)
#endif
@@ -381,9 +378,7 @@ static const struct luaL_Reg lsignal_lib[] = {
};
int luaopen_util_signal(lua_State *L) {
-#if (LUA_VERSION_NUM > 501)
luaL_checkversion(L);
-#endif
int i = 0;
/* add the library */
diff --git a/util-src/strbitop.c b/util-src/strbitop.c
index 89fce661..722f5a2d 100644
--- a/util-src/strbitop.c
+++ b/util-src/strbitop.c
@@ -8,13 +8,10 @@
#include <lua.h>
#include <lauxlib.h>
-#if (LUA_VERSION_NUM == 501)
-#define luaL_setfuncs(L, R, N) luaL_register(L, NULL, R)
-#endif
/* TODO Deduplicate code somehow */
-int strop_and(lua_State *L) {
+static int strop_and(lua_State *L) {
luaL_Buffer buf;
size_t a, b, i;
const char *str_a = luaL_checklstring(L, 1, &a);
@@ -35,7 +32,7 @@ int strop_and(lua_State *L) {
return 1;
}
-int strop_or(lua_State *L) {
+static int strop_or(lua_State *L) {
luaL_Buffer buf;
size_t a, b, i;
const char *str_a = luaL_checklstring(L, 1, &a);
@@ -56,7 +53,7 @@ int strop_or(lua_State *L) {
return 1;
}
-int strop_xor(lua_State *L) {
+static int strop_xor(lua_State *L) {
luaL_Buffer buf;
size_t a, b, i;
const char *str_a = luaL_checklstring(L, 1, &a);
diff --git a/util-src/struct.c b/util-src/struct.c
index e80df4e6..6267358c 100644
--- a/util-src/struct.c
+++ b/util-src/struct.c
@@ -36,12 +36,6 @@
#include "lauxlib.h"
-#if (LUA_VERSION_NUM >= 502)
-
-#define luaL_register(L,n,f) luaL_newlib(L,f)
-
-#endif
-
/* basic integer type */
#if !defined(STRUCT_INT)
@@ -392,7 +386,7 @@ static const struct luaL_Reg thislib[] = {
LUALIB_API int luaopen_util_struct (lua_State *L);
LUALIB_API int luaopen_util_struct (lua_State *L) {
- luaL_register(L, "struct", thislib);
+ luaL_newlib(L, thislib);
return 1;
}
diff --git a/util-src/table.c b/util-src/table.c
index 9a9553fc..1cbb276d 100644
--- a/util-src/table.c
+++ b/util-src/table.c
@@ -1,11 +1,17 @@
#include <lua.h>
#include <lauxlib.h>
+#ifndef LUA_MAXINTEGER
+#include <stdint.h>
+#define LUA_MAXINTEGER PTRDIFF_MAX
+#endif
+
static int Lcreate_table(lua_State *L) {
lua_createtable(L, luaL_checkinteger(L, 1), luaL_checkinteger(L, 2));
return 1;
}
+/* COMPAT: w/ Lua pre-5.2 */
static int Lpack(lua_State *L) {
unsigned int n_args = lua_gettop(L);
lua_createtable(L, n_args, 1);
@@ -20,14 +26,48 @@ static int Lpack(lua_State *L) {
return 1;
}
+/* COMPAT: w/ Lua pre-5.4 */
+static int Lmove (lua_State *L) {
+ lua_Integer f = luaL_checkinteger(L, 2);
+ lua_Integer e = luaL_checkinteger(L, 3);
+ lua_Integer t = luaL_checkinteger(L, 4);
+
+ int tt = !lua_isnoneornil(L, 5) ? 5 : 1; /* destination table */
+ luaL_checktype(L, 1, LUA_TTABLE);
+ luaL_checktype(L, tt, LUA_TTABLE);
+
+ if (e >= f) { /* otherwise, nothing to move */
+ lua_Integer n, i;
+ luaL_argcheck(L, f > 0 || e < LUA_MAXINTEGER + f, 3,
+ "too many elements to move");
+ n = e - f + 1; /* number of elements to move */
+ luaL_argcheck(L, t <= LUA_MAXINTEGER - n + 1, 4,
+ "destination wrap around");
+ if (t > e || t <= f || (tt != 1 && !lua_compare(L, 1, tt, LUA_OPEQ))) {
+ for (i = 0; i < n; i++) {
+ lua_rawgeti(L, 1, f + i);
+ lua_rawseti(L, tt, t + i);
+ }
+ } else {
+ for (i = n - 1; i >= 0; i--) {
+ lua_rawgeti(L, 1, f + i);
+ lua_rawseti(L, tt, t + i);
+ }
+ }
+ }
+
+ lua_pushvalue(L, tt); /* return destination table */
+ return 1;
+}
+
int luaopen_util_table(lua_State *L) {
-#if (LUA_VERSION_NUM > 501)
luaL_checkversion(L);
-#endif
lua_createtable(L, 0, 2);
lua_pushcfunction(L, Lcreate_table);
lua_setfield(L, -2, "create");
lua_pushcfunction(L, Lpack);
lua_setfield(L, -2, "pack");
+ lua_pushcfunction(L, Lmove);
+ lua_setfield(L, -2, "move");
return 1;
}
diff --git a/util-src/windows.c b/util-src/windows.c
index 57af79d5..2adb85f5 100644
--- a/util-src/windows.c
+++ b/util-src/windows.c
@@ -19,9 +19,6 @@
#include "lua.h"
#include "lauxlib.h"
-#if (LUA_VERSION_NUM == 501)
-#define luaL_setfuncs(L, R, N) luaL_register(L, NULL, R)
-#endif
#if (LUA_VERSION_NUM < 504)
#define luaL_pushfail lua_pushnil
#endif
@@ -106,9 +103,7 @@ static const luaL_Reg Reg[] = {
};
LUALIB_API int luaopen_util_windows(lua_State *L) {
-#if (LUA_VERSION_NUM > 501)
luaL_checkversion(L);
-#endif
lua_newtable(L);
luaL_setfuncs(L, Reg, 0);
lua_pushliteral(L, "-3.14");
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-08 07:02:21 +0000