PKCS #12 module

3 files changed, 135 insertions, 0 deletions

diff --git a/src/GNUmakefile b/src/GNUmakefile
index 75e8c3a..240a773 100644
--- a/src/GNUmakefile
+++ b/src/GNUmakefile
@@ -96,6 +96,7 @@ MODS$(1)_$(d) = \
         $$(DESTDIR)$(3)/openssl/x509/chain.lua \
         $$(DESTDIR)$(3)/openssl/x509/crl.lua \
         $$(DESTDIR)$(3)/openssl/x509/store.lua \
+        $$(DESTDIR)$(3)/openssl/pkcs12.lua \
         $$(DESTDIR)$(3)/openssl/ssl/context.lua \
         $$(DESTDIR)$(3)/openssl/ssl.lua \
         $$(DESTDIR)$(3)/openssl/digest.lua \
diff --git a/src/openssl.c b/src/openssl.c
index c589d6c..2cdf1d4 100644
--- a/src/openssl.c
+++ b/src/openssl.c
@@ -64,6 +64,7 @@
 #include <openssl/asn1.h>
 #include <openssl/x509.h>
 #include <openssl/x509v3.h>
+#include <openssl/pkcs12.h>
 #include <openssl/evp.h>
 #include <openssl/pem.h>
 #include <openssl/ssl.h>
@@ -88,6 +89,7 @@
 #define X509_CRL_CLASS   "X509_CRL*"
 #define X509_STORE_CLASS "X509_STORE*"
 #define X509_STCTX_CLASS "X509_STORE_CTX*"
+#define PKCS12_CLASS     "PKCS12*"
 #define SSL_CTX_CLASS    "SSL_CTX*"
 #define SSL_CLASS        "SSL*"
 #define DIGEST_CLASS     "EVP_MD_CTX"     /* not a pointer */
@@ -363,6 +365,18 @@ static _Bool loadfield(lua_State *L, int index, const char *k, int type, void *p
 } /* loadfield() */
 
 
+static void *loadfield_udata(lua_State *L, int index, const char *k, const char *tname) {
+        if (!getfield(L, index, k))
+                return NULL;
+
+        void **p = luaL_checkudata(L, -1, tname);
+
+        lua_pop(L, 1); /* table keeps reference */
+
+        return *p;
+} /* loadfield_udata() */
+
+
 static const char *pushnid(lua_State *L, int nid) {
         const char *txt;
         ASN1_OBJECT *obj;
@@ -3563,6 +3577,124 @@ int luaopen__openssl_x509_store_context(lua_State *L) {
 
 
 /*
+ * PKCS12 - openssl.pkcs12
+ *
+ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+static int p12_new(lua_State *L) {
+        char *pass = NULL;
+        loadfield(L, 1, "password", LUA_TSTRING, &pass);
+
+        EVP_PKEY *key = loadfield_udata(L, 1, "key", PKEY_CLASS);
+        STACK_OF(X509) *certs = loadfield_udata(L, 1, "certs", X509_CHAIN_CLASS);
+
+        PKCS12 **ud = prepsimple(L, PKCS12_CLASS);
+
+        int i;
+        int no_kcert = 0;
+        X509 *cert = NULL;
+        X509 *kcert = NULL;
+        STACK_OF(X509) *ca;
+
+        if (!(ca = sk_X509_new_null()))
+                goto error;
+
+        for (i = 0; i < sk_X509_num(certs); i++) {
+                cert = sk_X509_value(certs, i);
+                if (key && X509_check_private_key(cert, key)) {
+                        if (!(kcert = X509_dup(cert)))
+                                goto error;
+                        X509_keyid_set1(kcert, NULL, 0);
+                        X509_alias_set1(kcert, NULL, 0);
+                }
+                else sk_X509_push(ca, cert);
+        }
+        if (key && !kcert) {
+                no_kcert = 1;
+                goto error;
+        }
+
+        if (!(*ud = PKCS12_create(pass, NULL, key, kcert, ca, 0, 0, 0, 0, 0)))
+                goto error;
+
+        if (kcert)
+                X509_free(kcert);
+        sk_X509_free(ca);
+
+        return 1;
+
+error:
+        if (kcert)
+                X509_free(kcert);
+        if (ca)
+                sk_X509_free(ca);
+
+        if (no_kcert)
+                luaL_argerror(L, 1, lua_pushstring(L, "certificate matching the key not found"));
+
+        return throwssl(L, "pkcs12.new");
+} /* p12_new() */
+
+
+static int p12_interpose(lua_State *L) {
+        return interpose(L, PKCS12_CLASS);
+} /* p12_interpose() */
+
+
+static int p12__tostring(lua_State *L) {
+        PKCS12 *p12 = checksimple(L, 1, PKCS12_CLASS);
+        BIO *bio = getbio(L);
+        char *data;
+        long len;
+
+        if (!i2d_PKCS12_bio(bio, p12))
+                return throwssl(L, "pkcs12:__tostring");
+
+        len = BIO_get_mem_data(bio, &data);
+
+        lua_pushlstring(L, data, len);
+
+        return 1;
+} /* p12__tostring() */
+
+
+static int p12__gc(lua_State *L) {
+        PKCS12 **ud = luaL_checkudata(L, 1, PKCS12_CLASS);
+
+        PKCS12_free(*ud);
+        *ud = NULL;
+
+        return 0;
+} /* p12__gc() */
+
+
+static const luaL_Reg p12_methods[] = {
+        { "tostring", &p12__tostring },
+        { NULL,         NULL },
+};
+
+static const luaL_Reg p12_metatable[] = {
+        { "__tostring", &p12__tostring },
+        { "__gc",       &p12__gc },
+        { NULL,         NULL },
+};
+
+static const luaL_Reg p12_globals[] = {
+        { "new",       &p12_new },
+        { "interpose", &p12_interpose },
+        { NULL,        NULL },
+};
+
+int luaopen__openssl_pkcs12(lua_State *L) {
+        initall(L);
+
+        luaL_newlib(L, p12_globals);
+
+        return 1;
+} /* luaopen__openssl_pkcs12() */
+
+
+/*
  * SSL_CTX - openssl.ssl.context
  *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
@@ -4759,6 +4891,7 @@ static void initall(lua_State *L) {
         addclass(L, X509_CRL_CLASS, xx_methods, xx_metatable);
         addclass(L, X509_CHAIN_CLASS, xl_methods, xl_metatable);
         addclass(L, X509_STORE_CLASS, xs_methods, xs_metatable);
+        addclass(L, PKCS12_CLASS, p12_methods, p12_metatable);
         addclass(L, SSL_CTX_CLASS, sx_methods, sx_metatable);
         addclass(L, SSL_CLASS, ssl_methods, ssl_metatable);
         addclass(L, DIGEST_CLASS, md_methods, md_metatable);
diff --git a/src/openssl.pkcs12.lua b/src/openssl.pkcs12.lua
new file mode 100644
index 0000000..d8f70c2
--- /dev/null
+++ b/src/openssl.pkcs12.lua
@@ -0,0 +1 @@
+return require('_openssl.pkcs12')