Make maximum certifcate chain size accepted from the peer application
[openssl.git] / ssl / ssl_lib.c
index 75816e70da7cd1a65622123063d5576cd3d10dad..89c3c2d4f498460ea8b625b9fdc0f229844085d0 100644 (file)
  */
 
 
-#include <assert.h>
+#ifdef REF_CHECK
+#  include <assert.h>
+#endif
 #include <stdio.h>
 #include <openssl/objects.h>
 #include <openssl/lhash.h>
 #include <openssl/x509v3.h>
 #include "ssl_locl.h"
+#include "kssl_lcl.h"
 
 const char *SSL_version_str=OPENSSL_VERSION_TEXT;
 
-static STACK_OF(CRYPTO_EX_DATA_FUNCS) *ssl_meth=NULL;
-static STACK_OF(CRYPTO_EX_DATA_FUNCS) *ssl_ctx_meth=NULL;
-static int ssl_meth_num=0;
-static int ssl_ctx_meth_num=0;
-
 OPENSSL_GLOBAL SSL3_ENC_METHOD ssl3_undef_enc_method={
        /* evil casts, but these functions are only called if there's a library bug */
        (int (*)(SSL *,int))ssl_undefined_function,
@@ -105,7 +103,7 @@ int SSL_clear(SSL *s)
 #else
        if (s->new_session)
                {
-               SSLerr(SSL_F_SSL_CLEAR,SSL_R_INTERNAL_ERROR);
+               SSLerr(SSL_F_SSL_CLEAR,ERR_R_INTERNAL_ERROR);
                return 0;
                }
 #endif
@@ -236,10 +234,11 @@ SSL *SSL_new(SSL_CTX *ctx)
        s->server=(ctx->method->ssl_accept == ssl_undefined_function)?0:1;
        s->options=ctx->options;
        s->mode=ctx->mode;
+       s->max_cert_list=ctx->max_cert_list;
        s->read_ahead=ctx->read_ahead; /* used to happen in SSL_clear */
        SSL_clear(s);
 
-       CRYPTO_new_ex_data(ssl_meth,s,&s->ex_data);
+       CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
 
        return(s);
 err:
@@ -331,42 +330,22 @@ int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
 
 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
 {
-       if(X509_PURPOSE_get_by_id(purpose) == -1) {
-               SSLerr(SSL_F_SSL_CTX_SET_PURPOSE, SSL_R_INVALID_PURPOSE);
-               return 0;
-       }
-       s->purpose = purpose;
-       return 1;
+       return X509_PURPOSE_set(&s->purpose, purpose);
 }
 
 int SSL_set_purpose(SSL *s, int purpose)
 {
-       if(X509_PURPOSE_get_by_id(purpose) == -1) {
-               SSLerr(SSL_F_SSL_SET_PURPOSE, SSL_R_INVALID_PURPOSE);
-               return 0;
-       }
-       s->purpose = purpose;
-       return 1;
+       return X509_PURPOSE_set(&s->purpose, purpose);
 }
-       
+
 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
 {
-       if(X509_TRUST_get_by_id(trust) == -1) {
-               SSLerr(SSL_F_SSL_CTX_SET_TRUST, SSL_R_INVALID_TRUST);
-               return 0;
-       }
-       s->trust = trust;
-       return 1;
+       return X509_TRUST_set(&s->trust, trust);
 }
 
 int SSL_set_trust(SSL *s, int trust)
 {
-       if(X509_TRUST_get_by_id(trust) == -1) {
-               SSLerr(SSL_F_SSL_SET_TRUST, SSL_R_INVALID_TRUST);
-               return 0;
-       }
-       s->trust = trust;
-       return 1;
+       return X509_TRUST_set(&s->trust, trust);
 }
 
 void SSL_free(SSL *s)
@@ -389,7 +368,7 @@ void SSL_free(SSL *s)
                }
 #endif
 
-       CRYPTO_free_ex_data(ssl_meth,(char *)s,&s->ex_data);
+       CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
 
        if (s->bbio != NULL)
                {
@@ -461,6 +440,11 @@ BIO *SSL_get_wbio(SSL *s)
        { return(s->wbio); }
 
 int SSL_get_fd(SSL *s)
+       {
+       return(SSL_get_rfd(s));
+       }
+
+int SSL_get_rfd(SSL *s)
        {
        int ret= -1;
        BIO *b,*r;
@@ -472,6 +456,18 @@ int SSL_get_fd(SSL *s)
        return(ret);
        }
 
+int SSL_get_wfd(SSL *s)
+       {
+       int ret= -1;
+       BIO *b,*r;
+
+       b=SSL_get_wbio(s);
+       r=BIO_find_type(b,BIO_TYPE_DESCRIPTOR);
+       if (r != NULL)
+               BIO_get_fd(r,&ret);
+       return(ret);
+       }
+
 #ifndef OPENSSL_NO_SOCK
 int SSL_set_fd(SSL *s,int fd)
        {
@@ -766,7 +762,7 @@ long SSL_get_default_timeout(SSL *s)
        return(s->method->get_timeout());
        }
 
-int SSL_read(SSL *s,char *buf,int num)
+int SSL_read(SSL *s,void *buf,int num)
        {
        if (s->handshake_func == 0)
                {
@@ -782,8 +778,14 @@ int SSL_read(SSL *s,char *buf,int num)
        return(s->method->ssl_read(s,buf,num));
        }
 
-int SSL_peek(SSL *s,char *buf,int num)
+int SSL_peek(SSL *s,void *buf,int num)
        {
+       if (s->handshake_func == 0)
+               {
+               SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED);
+               return -1;
+               }
+
        if (s->shutdown & SSL_RECEIVED_SHUTDOWN)
                {
                return(0);
@@ -791,7 +793,7 @@ int SSL_peek(SSL *s,char *buf,int num)
        return(s->method->ssl_peek(s,buf,num));
        }
 
-int SSL_write(SSL *s,const char *buf,int num)
+int SSL_write(SSL *s,const void *buf,int num)
        {
        if (s->handshake_func == 0)
                {
@@ -850,6 +852,12 @@ long SSL_ctrl(SSL *s,int cmd,long larg,char *parg)
                return(s->options|=larg);
        case SSL_CTRL_MODE:
                return(s->mode|=larg);
+       case SSL_CTRL_GET_MAX_CERT_LIST:
+               return(s->max_cert_list);
+       case SSL_CTRL_SET_MAX_CERT_LIST:
+               l=s->max_cert_list;
+               s->max_cert_list=larg;
+               return(l);
        default:
                return(s->method->ssl_ctrl(s,cmd,larg,parg));
                }
@@ -881,6 +889,12 @@ long SSL_CTX_ctrl(SSL_CTX *ctx,int cmd,long larg,char *parg)
                l=ctx->read_ahead;
                ctx->read_ahead=larg;
                return(l);
+       case SSL_CTRL_GET_MAX_CERT_LIST:
+               return(ctx->max_cert_list);
+       case SSL_CTRL_SET_MAX_CERT_LIST:
+               l=ctx->max_cert_list;
+               ctx->max_cert_list=larg;
+               return(l);
 
        case SSL_CTRL_SET_SESS_CACHE_SIZE:
                l=ctx->session_cache_size;
@@ -1070,6 +1084,9 @@ int ssl_cipher_list_to_bytes(SSL *s,STACK_OF(SSL_CIPHER) *sk,unsigned char *p)
        int i,j=0;
        SSL_CIPHER *c;
        unsigned char *q;
+#ifndef OPENSSL_NO_KRB5
+        int nokrb5 = !kssl_tgt_is_available(s->kssl_ctx);
+#endif /* OPENSSL_NO_KRB5 */
 
        if (sk == NULL) return(0);
        q=p;
@@ -1077,6 +1094,10 @@ int ssl_cipher_list_to_bytes(SSL *s,STACK_OF(SSL_CIPHER) *sk,unsigned char *p)
        for (i=0; i<sk_SSL_CIPHER_num(sk); i++)
                {
                c=sk_SSL_CIPHER_value(sk,i);
+#ifndef OPENSSL_NO_KRB5
+                if ((c->algorithms & SSL_KRB5) && nokrb5)
+                    continue;
+#endif /* OPENSSL_NO_KRB5 */                    
                j=ssl_put_cipher_by_char(s,c,p);
                p+=j;
                }
@@ -1213,6 +1234,7 @@ SSL_CTX *SSL_CTX_new(SSL_METHOD *meth)
        ret->app_verify_callback=NULL;
        ret->app_verify_arg=NULL;
 
+       ret->max_cert_list=SSL_MAX_CERT_LIST_DEFAULT;
        ret->read_ahead=0;
        ret->verify_mode=SSL_VERIFY_NONE;
        ret->verify_depth=-1; /* Don't impose a limit (but x509_lu.c does) */
@@ -1259,7 +1281,7 @@ SSL_CTX *SSL_CTX_new(SSL_METHOD *meth)
        if ((ret->client_CA=sk_X509_NAME_new_null()) == NULL)
                goto err;
 
-       CRYPTO_new_ex_data(ssl_ctx_meth,(char *)ret,&ret->ex_data);
+       CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data);
 
        ret->extra_certs=NULL;
        ret->comp_methods=SSL_COMP_get_compression_methods();
@@ -1295,7 +1317,7 @@ void SSL_CTX_free(SSL_CTX *a)
                abort(); /* ok */
                }
 #endif
-       CRYPTO_free_ex_data(ssl_ctx_meth,(char *)a,&a->ex_data);
+       CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
 
        if (a->sessions != NULL)
                {
@@ -1348,8 +1370,6 @@ void SSL_CTX_set_verify(SSL_CTX *ctx,int mode,int (*cb)(int, X509_STORE_CTX *))
        {
        ctx->verify_mode=mode;
        ctx->default_verify_callback=cb;
-       /* This needs cleaning up EAY EAY EAY */
-       X509_STORE_set_verify_cb_func(ctx->cert_store,cb);
        }
 
 void SSL_CTX_set_verify_depth(SSL_CTX *ctx,int depth)
@@ -1494,7 +1514,7 @@ X509 *ssl_get_server_send_cert(SSL *s)
                }
        else /* if (kalg & SSL_aNULL) */
                {
-               SSLerr(SSL_F_SSL_GET_SERVER_SEND_CERT,SSL_R_INTERNAL_ERROR);
+               SSLerr(SSL_F_SSL_GET_SERVER_SEND_CERT,ERR_R_INTERNAL_ERROR);
                return(NULL);
                }
        if (c->pkeys[i].x509 == NULL) return(NULL);
@@ -1523,7 +1543,7 @@ EVP_PKEY *ssl_get_sign_pkey(SSL *s,SSL_CIPHER *cipher)
                }
        else /* if (alg & SSL_aNULL) */
                {
-               SSLerr(SSL_F_SSL_GET_SIGN_PKEY,SSL_R_INTERNAL_ERROR);
+               SSLerr(SSL_F_SSL_GET_SIGN_PKEY,ERR_R_INTERNAL_ERROR);
                return(NULL);
                }
        }
@@ -1784,6 +1804,7 @@ SSL *SSL_dup(SSL *s)
                        s->sid_ctx, s->sid_ctx_length);
                }
 
+       SSL_set_max_cert_list(ret,SSL_get_max_cert_list(s));
        SSL_set_read_ahead(ret,SSL_get_read_ahead(s));
        SSL_set_verify(ret,SSL_get_verify_mode(s),
                SSL_get_verify_callback(s));
@@ -1795,7 +1816,7 @@ SSL *SSL_dup(SSL *s)
        ret->options=s->options;
 
        /* copy app data, a little dangerous perhaps */
-       if (!CRYPTO_dup_ex_data(ssl_meth,&ret->ex_data,&s->ex_data))
+       if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
                goto err;
 
        /* setup rbio, and wbio */
@@ -2040,9 +2061,8 @@ long SSL_get_verify_result(SSL *ssl)
 int SSL_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func,
                         CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func)
        {
-       ssl_meth_num++;
-       return(CRYPTO_get_ex_new_index(ssl_meth_num-1,
-               &ssl_meth,argl,argp,new_func,dup_func,free_func));
+       return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp,
+                               new_func, dup_func, free_func);
        }
 
 int SSL_set_ex_data(SSL *s,int idx,void *arg)
@@ -2058,9 +2078,8 @@ void *SSL_get_ex_data(SSL *s,int idx)
 int SSL_CTX_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func,
                             CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func)
        {
-       ssl_ctx_meth_num++;
-       return(CRYPTO_get_ex_new_index(ssl_ctx_meth_num-1,
-               &ssl_ctx_meth,argl,argp,new_func,dup_func,free_func));
+       return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp,
+                               new_func, dup_func, free_func);
        }
 
 int SSL_CTX_set_ex_data(SSL_CTX *s,int idx,void *arg)