Import of SSLeay-0.9.0b with RSA and IDEA stubbed + OpenBSD build

functionality for shared libs.

Note that routines such as sslv2_init and friends that use RSA will
not work due to lack of RSA in this library.

Needs documentation and help from ports for easy upgrade to full
functionality where legally possible.

1 files changed, 582 insertions, 0 deletions

diff --git a/src/lib/libssl/ssl_sess.c b/src/lib/libssl/ssl_sess.c
new file mode 100644
index 0000000000..8212600e40
--- /dev/null
+++ b/src/lib/libssl/ssl_sess.c
@@ -0,0 +1,582 @@
+/* ssl/ssl_sess.c */
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ * 
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ * 
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from 
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ * 
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ * 
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+
+#include <stdio.h>
+#include "lhash.h"
+#include "rand.h"
+#include "ssl_locl.h"
+
+#ifndef NOPROTO
+static void SSL_SESSION_list_remove(SSL_CTX *ctx, SSL_SESSION *s);
+static void SSL_SESSION_list_add(SSL_CTX *ctx,SSL_SESSION *s);
+#else
+static void SSL_SESSION_list_remove();
+static void SSL_SESSION_list_add();
+#endif
+
+static ssl_session_num=0;
+static STACK *ssl_session_meth=NULL;
+
+SSL_SESSION *SSL_get_session(ssl)
+SSL *ssl;
+        {
+        return(ssl->session);
+        }
+
+int SSL_SESSION_get_ex_new_index(argl,argp,new_func,dup_func,free_func)
+long argl;
+char *argp;
+int (*new_func)();
+int (*dup_func)();
+void (*free_func)();
+        {
+        ssl_session_num++;
+        return(CRYPTO_get_ex_new_index(ssl_session_num-1,
+                &ssl_session_meth,
+                argl,argp,new_func,dup_func,free_func));
+        }
+
+int SSL_SESSION_set_ex_data(s,idx,arg)
+SSL_SESSION *s;
+int idx;
+char *arg;
+        {
+        return(CRYPTO_set_ex_data(&s->ex_data,idx,arg));
+        }
+
+char *SSL_SESSION_get_ex_data(s,idx)
+SSL_SESSION *s;
+int idx;
+        {
+        return(CRYPTO_get_ex_data(&s->ex_data,idx));
+        }
+
+SSL_SESSION *SSL_SESSION_new()
+        {
+        SSL_SESSION *ss;
+
+        ss=(SSL_SESSION *)Malloc(sizeof(SSL_SESSION));
+        if (ss == NULL)
+                {
+                SSLerr(SSL_F_SSL_SESSION_NEW,ERR_R_MALLOC_FAILURE);
+                return(0);
+                }
+        memset(ss,0,sizeof(SSL_SESSION));
+
+        ss->references=1;
+        ss->timeout=60*5+4; /* 5 minute timeout by default */
+        ss->time=time(NULL);
+        ss->prev=NULL;
+        ss->next=NULL;
+        CRYPTO_new_ex_data(ssl_session_meth,(char *)ss,&ss->ex_data);
+        return(ss);
+        }
+
+int ssl_get_new_session(s, session)
+SSL *s;
+int session;
+        {
+        SSL_SESSION *ss=NULL;
+
+        if ((ss=SSL_SESSION_new()) == NULL) return(0);
+
+        /* If the context has a default timeout, use it */
+        if (s->ctx->session_timeout != 0)
+                ss->timeout=SSL_get_default_timeout(s);
+
+        if (s->session != NULL)
+                {
+                SSL_SESSION_free(s->session);
+                s->session=NULL;
+                }
+
+        if (session)
+                {
+                if (s->version == SSL2_CLIENT_VERSION)
+                        {
+                        ss->ssl_version=SSL2_VERSION;
+                        ss->session_id_length=SSL2_SSL_SESSION_ID_LENGTH;
+                        }
+                else if (s->version == SSL3_VERSION)
+                        {
+                        ss->ssl_version=SSL3_VERSION;
+                        ss->session_id_length=SSL3_SSL_SESSION_ID_LENGTH;
+                        }
+                else if (s->version == TLS1_VERSION)
+                        {
+                        ss->ssl_version=TLS1_VERSION;
+                        ss->session_id_length=SSL3_SSL_SESSION_ID_LENGTH;
+                        }
+                else
+                        {
+                        SSLerr(SSL_F_SSL_GET_NEW_SESSION,SSL_R_UNSUPPORTED_SSL_VERSION);
+                        SSL_SESSION_free(ss);
+                        return(0);
+                        }
+
+                for (;;)
+                        {
+                        SSL_SESSION *r;
+
+                        RAND_bytes(ss->session_id,ss->session_id_length);
+                        CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX);
+                        r=(SSL_SESSION *)lh_retrieve(s->ctx->sessions,
+                                (char *)ss);
+                        CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX);
+                        if (r == NULL) break;
+                        /* else - woops a session_id match */
+                        }
+                }
+        else
+                {
+                ss->session_id_length=0;
+                }
+
+        s->session=ss;
+        ss->ssl_version=s->version;
+
+        return(1);
+        }
+
+int ssl_get_prev_session(s,session_id,len)
+SSL *s;
+unsigned char *session_id;
+int len;
+        {
+        SSL_SESSION *ret=NULL,data;
+
+        /* conn_init();*/
+        data.ssl_version=s->version;
+        data.session_id_length=len;
+        if (len > SSL_MAX_SSL_SESSION_ID_LENGTH)
+                return(0);
+        memcpy(data.session_id,session_id,len);;
+
+        if (!(s->ctx->session_cache_mode & SSL_SESS_CACHE_NO_INTERNAL_LOOKUP))
+                {
+                CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX);
+                ret=(SSL_SESSION *)lh_retrieve(s->ctx->sessions,(char *)&data);
+                CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX);
+                }
+
+        if (ret == NULL)
+                {
+                int copy=1;
+
+                s->ctx->sess_miss++;
+                ret=NULL;
+                if ((s->ctx->get_session_cb != NULL) &&
+                        ((ret=s->ctx->get_session_cb(s,session_id,len,&copy))
+                                != NULL))
+                        {
+                        s->ctx->sess_cb_hit++;
+
+                        /* The following should not return 1, otherwise,
+                         * things are very strange */
+                        SSL_CTX_add_session(s->ctx,ret);
+                        /* auto free it */
+                        if (!copy)
+                                SSL_SESSION_free(ret);
+                        }
+                if (ret == NULL) return(0);
+                }
+
+        if (ret->cipher == NULL)
+                {
+                char buf[5],*p;
+                unsigned long l;
+
+                p=buf;
+                l=ret->cipher_id;
+                l2n(l,p);
+                if ((ret->ssl_version>>8) == SSL3_VERSION_MAJOR)
+                        ret->cipher=ssl_get_cipher_by_char(s,&(buf[2]));
+                else 
+                        ret->cipher=ssl_get_cipher_by_char(s,&(buf[1]));
+                if (ret->cipher == NULL)
+                        return(0);
+                }
+
+        /* If a thread got the session, then 'swaped', and another got
+         * it and then due to a time-out decided to 'Free' it we could
+         * be in trouble.  So I'll increment it now, then double decrement
+         * later - am I speaking rubbish?. */
+        CRYPTO_add(&ret->references,1,CRYPTO_LOCK_SSL_SESSION);
+
+        if ((long)(ret->time+ret->timeout) < (long)time(NULL)) /* timeout */
+                {
+                s->ctx->sess_timeout++;
+                /* remove it from the cache */
+                SSL_CTX_remove_session(s->ctx,ret);
+                SSL_SESSION_free(ret);          /* again to actually Free it */
+                return(0);
+                }
+
+        s->ctx->sess_hit++;
+
+        /* ret->time=time(NULL); */ /* rezero timeout? */
+        /* again, just leave the session 
+         * if it is the same session, we have just incremented and
+         * then decremented the reference count :-) */
+        if (s->session != NULL)
+                SSL_SESSION_free(s->session);
+        s->session=ret;
+        return(1);
+        }
+
+int SSL_CTX_add_session(ctx,c)
+SSL_CTX *ctx;
+SSL_SESSION *c;
+        {
+        int ret=0;
+        SSL_SESSION *s;
+
+        /* conn_init(); */
+        CRYPTO_add(&c->references,1,CRYPTO_LOCK_SSL_SESSION);
+
+        CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
+        s=(SSL_SESSION *)lh_insert(ctx->sessions,(char *)c);
+        
+        /* Put on the end of the queue unless it is already in the cache */
+        if (s == NULL)
+                SSL_SESSION_list_add(ctx,c);
+
+        /* If the same session if is being 're-added', Free the old
+         * one when the last person stops using it.
+         * This will also work if it is alread in the cache.
+         * The references will go up and then down :-) */
+        if (s != NULL)
+                {
+                SSL_SESSION_free(s);
+                ret=0;
+                }
+        else
+                {
+                ret=1;
+
+                if (SSL_CTX_sess_get_cache_size(ctx) > 0)
+                        {
+                        while (SSL_CTX_sess_number(ctx) >
+                                SSL_CTX_sess_get_cache_size(ctx))
+                                {
+                                if (!SSL_CTX_remove_session(ctx,
+                                        ctx->session_cache_tail))
+                                        break;
+                                else
+                                        ctx->sess_cache_full++;
+                                }
+                        }
+                }
+        CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
+        return(ret);
+        }
+
+int SSL_CTX_remove_session(ctx,c)
+SSL_CTX *ctx;
+SSL_SESSION *c;
+        {
+        SSL_SESSION *r;
+        int ret=0;
+
+        if ((c != NULL) && (c->session_id_length != 0))
+                {
+                CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
+                r=(SSL_SESSION *)lh_delete(ctx->sessions,(char *)c);
+                if (r != NULL)
+                        {
+                        ret=1;
+                        SSL_SESSION_list_remove(ctx,c);
+                        }
+
+                CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
+
+                if (ret)
+                        {
+                        r->not_resumable=1;
+                        if (ctx->remove_session_cb != NULL)
+                                ctx->remove_session_cb(ctx,r);
+                        SSL_SESSION_free(r);
+                        }
+                }
+        else
+                ret=0;
+        return(ret);
+        }
+
+void SSL_SESSION_free(ss)
+SSL_SESSION *ss;
+        {
+        int i;
+
+        i=CRYPTO_add(&ss->references,-1,CRYPTO_LOCK_SSL_SESSION);
+#ifdef REF_PRINT
+        REF_PRINT("SSL_SESSION",ss);
+#endif
+        if (i > 0) return;
+#ifdef REF_CHECK
+        if (i < 0)
+                {
+                fprintf(stderr,"SSL_SESSION_free, bad reference count\n");
+                abort(); /* ok */
+                }
+#endif
+
+        CRYPTO_free_ex_data(ssl_session_meth,(char *)ss,&ss->ex_data);
+
+        memset(ss->key_arg,0,SSL_MAX_KEY_ARG_LENGTH);
+        memset(ss->master_key,0,SSL_MAX_MASTER_KEY_LENGTH);
+        memset(ss->session_id,0,SSL_MAX_SSL_SESSION_ID_LENGTH);
+        if (ss->cert != NULL) ssl_cert_free(ss->cert);
+        if (ss->peer != NULL) X509_free(ss->peer);
+        if (ss->ciphers != NULL) sk_free(ss->ciphers);
+        memset(ss,0,sizeof(*ss));
+        Free(ss);
+        }
+
+int SSL_set_session(s, session)
+SSL *s;
+SSL_SESSION *session;
+        {
+        int ret=0;
+        SSL_METHOD *meth;
+
+        if (session != NULL)
+                {
+                meth=s->ctx->method->get_ssl_method(session->ssl_version);
+                if (meth == NULL)
+                        meth=s->method->get_ssl_method(session->ssl_version);
+                if (meth == NULL)
+                        {
+                        SSLerr(SSL_F_SSL_SET_SESSION,SSL_R_UNABLE_TO_FIND_SSL_METHOD);
+                        return(0);
+                        }
+
+                if (meth != s->method)
+                        {
+                        if (!SSL_set_ssl_method(s,meth))
+                                return(0);
+                        session->timeout=SSL_get_default_timeout(s);
+                        }
+
+                /* CRYPTO_w_lock(CRYPTO_LOCK_SSL);*/
+                CRYPTO_add(&session->references,1,CRYPTO_LOCK_SSL_SESSION);
+                if (s->session != NULL)
+                        SSL_SESSION_free(s->session);
+                s->session=session;
+                /* CRYPTO_w_unlock(CRYPTO_LOCK_SSL);*/
+                ret=1;
+                }
+        else
+                {
+                if (s->session != NULL)
+                        {
+                        SSL_SESSION_free(s->session);
+                        s->session=NULL;
+                        }
+                }
+        return(ret);
+        }
+
+long SSL_SESSION_set_timeout(s,t)
+SSL_SESSION *s;
+long t;
+        {
+        if (s == NULL) return(0);
+        s->timeout=t;
+        return(1);
+        }
+
+long SSL_SESSION_get_timeout(s)
+SSL_SESSION *s;
+        {
+        if (s == NULL) return(0);
+        return(s->timeout);
+        }
+
+long SSL_SESSION_get_time(s)
+SSL_SESSION *s;
+        {
+        if (s == NULL) return(0);
+        return(s->time);
+        }
+
+long SSL_SESSION_set_time(s,t)
+SSL_SESSION *s;
+long t;
+        {
+        if (s == NULL) return(0);
+        s->time=t;
+        return(t);
+        }
+
+typedef struct timeout_param_st
+        {
+        SSL_CTX *ctx;
+        long time;
+        LHASH *cache;
+        } TIMEOUT_PARAM;
+
+static void timeout(s,p)
+SSL_SESSION *s;
+TIMEOUT_PARAM *p;
+        {
+        if ((p->time == 0) || (p->time > (s->time+s->timeout))) /* timeout */
+                {
+                /* The reason we don't call SSL_CTX_remove_session() is to
+                 * save on locking overhead */
+                lh_delete(p->cache,(char *)s);
+                SSL_SESSION_list_remove(p->ctx,s);
+                s->not_resumable=1;
+                if (p->ctx->remove_session_cb != NULL)
+                        p->ctx->remove_session_cb(p->ctx,s);
+                SSL_SESSION_free(s);
+                }
+        }
+
+void SSL_CTX_flush_sessions(s,t)
+SSL_CTX *s;
+long t;
+        {
+        unsigned long i;
+        TIMEOUT_PARAM tp;
+
+        tp.ctx=s;
+        tp.cache=SSL_CTX_sessions(s);
+        if (tp.cache == NULL) return;
+        tp.time=t;
+        CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
+        i=tp.cache->down_load;
+        tp.cache->down_load=0;
+        lh_doall_arg(tp.cache,(void (*)())timeout,(char *)&tp);
+        tp.cache->down_load=i;
+        CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
+        }
+
+int ssl_clear_bad_session(s)
+SSL *s;
+        {
+        if (    (s->session != NULL) &&
+                !(s->shutdown & SSL_SENT_SHUTDOWN) &&
+                !(SSL_in_init(s) || SSL_in_before(s)))
+                {
+                SSL_CTX_remove_session(s->ctx,s->session);
+                return(1);
+                }
+        else
+                return(0);
+        }
+
+/* locked by SSL_CTX in the calling function */
+static void SSL_SESSION_list_remove(ctx,s)
+SSL_CTX *ctx;
+SSL_SESSION *s;
+        {
+        if ((s->next == NULL) || (s->prev == NULL)) return;
+
+        if (s->next == (SSL_SESSION *)&(ctx->session_cache_tail))
+                { /* last element in list */
+                if (s->prev == (SSL_SESSION *)&(ctx->session_cache_head))
+                        { /* only one element in list */
+                        ctx->session_cache_head=NULL;
+                        ctx->session_cache_tail=NULL;
+                        }
+                else
+                        {
+                        ctx->session_cache_tail=s->prev;
+                        s->prev->next=(SSL_SESSION *)&(ctx->session_cache_tail);
+                        }
+                }
+        else
+                {
+                if (s->prev == (SSL_SESSION *)&(ctx->session_cache_head))
+                        { /* first element in list */
+                        ctx->session_cache_head=s->next;
+                        s->next->prev=(SSL_SESSION *)&(ctx->session_cache_head);
+                        }
+                else
+                        { /* middle of list */
+                        s->next->prev=s->prev;
+                        s->prev->next=s->next;
+                        }
+                }
+        s->prev=s->next=NULL;
+        }
+
+static void SSL_SESSION_list_add(ctx,s)
+SSL_CTX *ctx;
+SSL_SESSION *s;
+        {
+        if ((s->next != NULL) && (s->prev != NULL))
+                SSL_SESSION_list_remove(ctx,s);
+
+        if (ctx->session_cache_head == NULL)
+                {
+                ctx->session_cache_head=s;
+                ctx->session_cache_tail=s;
+                s->prev=(SSL_SESSION *)&(ctx->session_cache_head);
+                s->next=(SSL_SESSION *)&(ctx->session_cache_tail);
+                }
+        else
+                {
+                s->next=ctx->session_cache_head;
+                s->next->prev=s;
+                s->prev=(SSL_SESSION *)&(ctx->session_cache_head);
+                ctx->session_cache_head=s;
+                }
+        }
+