1 files changed, 174 insertions, 56 deletions

diff --git a/monitor_wrap.c b/monitor_wrap.c
index c9714138a..4034d569c 100644
--- a/monitor_wrap.c
+++ b/monitor_wrap.c
@@ -25,7 +25,7 @@
  */
 
 #include "includes.h"
-RCSID("$OpenBSD: monitor_wrap.c,v 1.24 2003/04/01 10:22:21 markus Exp $");
+RCSID("$OpenBSD: monitor_wrap.c,v 1.31 2003/08/28 12:54:34 markus Exp $");
 
 #include <openssl/bn.h>
 #include <openssl/dh.h>
@@ -47,11 +47,16 @@ RCSID("$OpenBSD: monitor_wrap.c,v 1.24 2003/04/01 10:22:21 markus Exp $");
 #include "atomicio.h"
 #include "monitor_fdpass.h"
 #include "getput.h"
+#include "servconf.h"
 
 #include "auth.h"
 #include "channels.h"
 #include "session.h"
 
+#ifdef GSSAPI
+#include "ssh-gss.h"
+#endif
+
 /* Imports */
 extern int compat20;
 extern Newkeys *newkeys[];
@@ -59,6 +64,7 @@ extern z_stream incoming_stream;
 extern z_stream outgoing_stream;
 extern struct monitor *pmonitor;
 extern Buffer input, output;
+extern ServerOptions options;
 
 void
 mm_request_send(int socket, enum monitor_reqtype type, Buffer *m)
@@ -70,9 +76,9 @@ mm_request_send(int socket, enum monitor_reqtype type, Buffer *m)
 
         PUT_32BIT(buf, mlen + 1);
         buf[4] = (u_char) type;         /* 1st byte of payload is mesg-type */
-        if (atomicio(write, socket, buf, sizeof(buf)) != sizeof(buf))
+        if (atomicio(vwrite, socket, buf, sizeof(buf)) != sizeof(buf))
                 fatal("%s: write", __func__);
-        if (atomicio(write, socket, buffer_ptr(m), mlen) != mlen)
+        if (atomicio(vwrite, socket, buffer_ptr(m), mlen) != mlen)
                 fatal("%s: write", __func__);
 }
 
@@ -520,6 +526,8 @@ mm_send_keystate(struct monitor *pmonitor)
         Buffer m;
         u_char *blob, *p;
         u_int bloblen, plen;
+        u_int32_t seqnr, packets;
+        u_int64_t blocks;
 
         buffer_init(&m);
 
@@ -568,8 +576,14 @@ mm_send_keystate(struct monitor *pmonitor)
         buffer_put_string(&m, blob, bloblen);
         xfree(blob);
 
-        buffer_put_int(&m, packet_get_seqnr(MODE_OUT));
-        buffer_put_int(&m, packet_get_seqnr(MODE_IN));
+        packet_get_state(MODE_OUT, &seqnr, &blocks, &packets);
+        buffer_put_int(&m, seqnr);
+        buffer_put_int64(&m, blocks);
+        buffer_put_int(&m, packets);
+        packet_get_state(MODE_IN, &seqnr, &blocks, &packets);
+        buffer_put_int(&m, seqnr);
+        buffer_put_int64(&m, blocks);
+        buffer_put_int(&m, packets);
 
         debug3("%s: New keys have been sent", __func__);
  skip:
@@ -661,6 +675,8 @@ mm_start_pam(char *user)
         Buffer m;
 
         debug3("%s entering", __func__);
+        if (!options.use_pam)
+                fatal("UsePAM=no, but ended up in %s anyway", __func__);
 
         buffer_init(&m);
         buffer_put_cstring(&m, user);
@@ -669,6 +685,112 @@ mm_start_pam(char *user)
 
         buffer_free(&m);
 }
+
+u_int
+mm_do_pam_account(void)
+{
+        Buffer m;
+        u_int ret;
+
+        debug3("%s entering", __func__);
+        if (!options.use_pam)
+                fatal("UsePAM=no, but ended up in %s anyway", __func__);
+
+        buffer_init(&m);
+        mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_PAM_ACCOUNT, &m);
+
+        mm_request_receive_expect(pmonitor->m_recvfd, 
+            MONITOR_ANS_PAM_ACCOUNT, &m);
+        ret = buffer_get_int(&m);
+
+        buffer_free(&m);
+        
+        debug3("%s returning %d", __func__, ret);
+
+        return (ret);
+}
+
+void *
+mm_sshpam_init_ctx(Authctxt *authctxt)
+{
+        Buffer m;
+        int success;
+
+        debug3("%s", __func__);
+        buffer_init(&m);
+        buffer_put_cstring(&m, authctxt->user);
+        mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_PAM_INIT_CTX, &m);
+        debug3("%s: waiting for MONITOR_ANS_PAM_INIT_CTX", __func__);
+        mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_PAM_INIT_CTX, &m);
+        success = buffer_get_int(&m);
+        if (success == 0) {
+                debug3("%s: pam_init_ctx failed", __func__);
+                buffer_free(&m);
+                return (NULL);
+        }
+        buffer_free(&m);
+        return (authctxt);
+}
+
+int
+mm_sshpam_query(void *ctx, char **name, char **info,
+    u_int *num, char ***prompts, u_int **echo_on)
+{
+        Buffer m;
+        int i, ret;
+
+        debug3("%s", __func__);
+        buffer_init(&m);
+        mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_PAM_QUERY, &m);
+        debug3("%s: waiting for MONITOR_ANS_PAM_QUERY", __func__);
+        mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_PAM_QUERY, &m);
+        ret = buffer_get_int(&m);
+        debug3("%s: pam_query returned %d", __func__, ret);
+        *name = buffer_get_string(&m, NULL);
+        *info = buffer_get_string(&m, NULL);
+        *num = buffer_get_int(&m);
+        *prompts = xmalloc((*num + 1) * sizeof(char *));
+        *echo_on = xmalloc((*num + 1) * sizeof(u_int));
+        for (i = 0; i < *num; ++i) {
+                (*prompts)[i] = buffer_get_string(&m, NULL);
+                (*echo_on)[i] = buffer_get_int(&m);
+        }
+        buffer_free(&m);
+        return (ret);
+}
+
+int
+mm_sshpam_respond(void *ctx, u_int num, char **resp)
+{
+        Buffer m;
+        int i, ret;
+
+        debug3("%s", __func__);
+        buffer_init(&m);
+        buffer_put_int(&m, num);
+        for (i = 0; i < num; ++i)
+                buffer_put_cstring(&m, resp[i]);
+        mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_PAM_RESPOND, &m);
+        debug3("%s: waiting for MONITOR_ANS_PAM_RESPOND", __func__);
+        mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_PAM_RESPOND, &m);
+        ret = buffer_get_int(&m);
+        debug3("%s: pam_respond returned %d", __func__, ret);
+        buffer_free(&m);
+        return (ret);
+}
+
+void
+mm_sshpam_free_ctx(void *ctxtp)
+{
+        Buffer m;
+
+        debug3("%s", __func__);
+        buffer_init(&m);
+        mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_PAM_FREE_CTX, &m);
+        debug3("%s: waiting for MONITOR_ANS_PAM_FREE_CTX", __func__);
+        mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_PAM_FREE_CTX, &m);
+        buffer_free(&m);
+}
 #endif /* USE_PAM */
 
 /* Request process termination */
@@ -949,73 +1071,69 @@ mm_auth_rsa_verify_response(Key *key, BIGNUM *p, u_char response[16])
         return (success);
 }
 
-#ifdef KRB4
-int
-mm_auth_krb4(Authctxt *authctxt, void *_auth, char **client, void *_reply)
+#ifdef GSSAPI
+OM_uint32
+mm_ssh_gssapi_server_ctx(Gssctxt **ctx, gss_OID oid)
 {
-        KTEXT auth, reply;
-        Buffer m;
-        u_int rlen;
-        int success = 0;
-        char *p;
+        Buffer m;
+        OM_uint32 major;
 
-        debug3("%s entering", __func__);
-        auth = _auth;
-        reply = _reply;
+        /* Client doesn't get to see the context */
+        *ctx = NULL;
 
         buffer_init(&m);
-        buffer_put_string(&m, auth->dat, auth->length);
+        buffer_put_string(&m, oid->elements, oid->length);
 
-        mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_KRB4, &m);
-        mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_KRB4, &m);
+        mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_GSSSETUP, &m);
+        mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_GSSSETUP, &m);
+
+        major = buffer_get_int(&m);
 
-        success = buffer_get_int(&m);
-        if (success) {
-                *client = buffer_get_string(&m, NULL);
-                p = buffer_get_string(&m, &rlen);
-                if (rlen >= MAX_KTXT_LEN)
-                        fatal("%s: reply from monitor too large", __func__);
-                reply->length = rlen;
-                memcpy(reply->dat, p, rlen);
-                memset(p, 0, rlen);
-                xfree(p);
-        }
         buffer_free(&m);
-        return (success);
+        return (major);
 }
-#endif
 
-#ifdef KRB5
-int
-mm_auth_krb5(void *ctx, void *argp, char **userp, void *resp)
+OM_uint32
+mm_ssh_gssapi_accept_ctx(Gssctxt *ctx, gss_buffer_desc *in,
+    gss_buffer_desc *out, OM_uint32 *flags)
 {
-        krb5_data *tkt, *reply;
         Buffer m;
-        int success;
-
-        debug3("%s entering", __func__);
-        tkt = (krb5_data *) argp;
-        reply = (krb5_data *) resp;
+        OM_uint32 major;
+        u_int len;
 
         buffer_init(&m);
-        buffer_put_string(&m, tkt->data, tkt->length);
+        buffer_put_string(&m, in->value, in->length);
 
-        mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_KRB5, &m);
-        mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_KRB5, &m);
+        mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_GSSSTEP, &m);
+        mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_GSSSTEP, &m);
 
-        success = buffer_get_int(&m);
-        if (success) {
-                u_int len;
+        major = buffer_get_int(&m);
+        out->value = buffer_get_string(&m, &len);
+        out->length = len;
+        if (flags)
+                *flags = buffer_get_int(&m);
 
-                *userp = buffer_get_string(&m, NULL);
-                reply->data = buffer_get_string(&m, &len);
-                reply->length = len;
-        } else {
-                memset(reply, 0, sizeof(*reply));
-                *userp = NULL;
-        }
+        buffer_free(&m);
+
+        return (major);
+}
+
+int
+mm_ssh_gssapi_userok(char *user)
+{
+        Buffer m;
+        int authenticated = 0;
+
+        buffer_init(&m);
+
+        mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_GSSUSEROK, &m);
+        mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_GSSUSEROK,
+                                  &m);
+
+        authenticated = buffer_get_int(&m);
 
         buffer_free(&m);
-        return (success);
+        debug3("%s: user %sauthenticated",__func__, authenticated ? "" : "not ");
+        return (authenticated);
 }
-#endif
+#endif /* GSSAPI */