*/
#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 1.35 2003/11/17 11:06:07 markus Exp $");
#include <openssl/bn.h>
#include <openssl/dh.h>
#include "packet.h"
#include "mac.h"
#include "log.h"
+#ifdef TARGET_OS_MAC /* XXX Broken krb5 headers on Mac */
+#undef TARGET_OS_MAC
#include "zlib.h"
+#define TARGET_OS_MAC 1
+#else
+#include "zlib.h"
+#endif
#include "monitor.h"
#include "monitor_wrap.h"
#include "xmalloc.h"
#include "atomicio.h"
#include "monitor_fdpass.h"
#include "getput.h"
+#include "servconf.h"
#include "auth.h"
#include "channels.h"
extern z_stream outgoing_stream;
extern struct monitor *pmonitor;
extern Buffer input, output;
+extern ServerOptions options;
+
+int
+mm_is_monitor(void)
+{
+ /*
+ * m_pid is only set in the privileged part, and
+ * points to the unprivileged child.
+ */
+ return (pmonitor && pmonitor->m_pid > 0);
+}
void
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__);
}
res = atomicio(read, socket, buf, sizeof(buf));
if (res != sizeof(buf)) {
if (res == 0)
- fatal_cleanup();
+ cleanup_exit(255);
fatal("%s: read: %ld", __func__, (long)res);
}
msg_len = GET_32BIT(buf);
return (pw);
}
-char *mm_auth2_read_banner(void)
+char *
+mm_auth2_read_banner(void)
{
Buffer m;
char *banner;
mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_AUTH2_READ_BANNER, &m);
buffer_clear(&m);
- mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_AUTH2_READ_BANNER, &m);
+ mm_request_receive_expect(pmonitor->m_recvfd,
+ MONITOR_ANS_AUTH2_READ_BANNER, &m);
banner = buffer_get_string(&m, NULL);
buffer_free(&m);
+ /* treat empty banner as missing banner */
+ if (strlen(banner) == 0) {
+ xfree(banner);
+ banner = NULL;
+ }
return (banner);
}
Buffer m;
u_char *blob, *p;
u_int bloblen, plen;
+ u_int32_t seqnr, packets;
+ u_int64_t blocks;
buffer_init(&m);
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:
}
void
-mm_session_pty_cleanup2(void *session)
+mm_session_pty_cleanup2(Session *s)
{
- Session *s = session;
Buffer m;
if (s->ttyfd == -1)
#ifdef USE_PAM
void
-mm_start_pam(char *user)
+mm_start_pam(Authctxt *authctxt)
{
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);
-
mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_PAM_START, &m);
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 */
return (success);
}
+
#ifdef GSSAPI
OM_uint32
-mm_ssh_gssapi_server_ctx(Gssctxt **ctx, gss_OID oid) {
- Buffer m;
- OM_uint32 major;
-
- /* Client doesn't get to see the context */
- *ctx=NULL;
+mm_ssh_gssapi_server_ctx(Gssctxt **ctx, gss_OID oid)
+{
+ Buffer m;
+ OM_uint32 major;
- buffer_init(&m);
- buffer_put_string(&m,oid->elements,oid->length);
+ /* Client doesn't get to see the context */
+ *ctx = NULL;
- mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_GSSSETUP, &m);
+ buffer_init(&m);
+ buffer_put_string(&m, oid->elements, oid->length);
- debug3("%s: waiting for MONITOR_ANS_GSSSETUP",__func__);
- mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_GSSSETUP, &m);
- major=buffer_get_int(&m);
+ mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_GSSSETUP, &m);
+ mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_GSSSETUP, &m);
- return(major);
+ major = buffer_get_int(&m);
+
+ buffer_free(&m);
+ return (major);
}
OM_uint32
mm_ssh_gssapi_accept_ctx(Gssctxt *ctx, gss_buffer_desc *in,
- gss_buffer_desc *out, OM_uint32 *flags) {
+ gss_buffer_desc *out, OM_uint32 *flags)
+{
+ Buffer m;
+ OM_uint32 major;
+ u_int len;
- Buffer m;
- OM_uint32 major;
+ buffer_init(&m);
+ buffer_put_string(&m, in->value, in->length);
- buffer_init(&m);
- buffer_put_string(&m, in->value, in->length);
- mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_GSSSTEP, &m);
+ mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_GSSSTEP, &m);
+ mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_GSSSTEP, &m);
- debug3("%s: waiting for MONITOR_ANS_GSSSTEP", __func__);
- mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_GSSSTEP, &m);
+ major = buffer_get_int(&m);
+ out->value = buffer_get_string(&m, &len);
+ out->length = len;
+ if (flags)
+ *flags = buffer_get_int(&m);
- major=buffer_get_int(&m);
- out->value=buffer_get_string(&m,&out->length);
- if (flags) *flags=buffer_get_int(&m);
+ buffer_free(&m);
- return(major);
+ 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);
+OM_uint32
+mm_ssh_gssapi_checkmic(Gssctxt *ctx, gss_buffer_t gssbuf, gss_buffer_t gssmic)
+{
+ Buffer m;
+ OM_uint32 major;
- debug3("%s: waiting for MONITOR_ANS_GSSUSEROK", __func__);
- mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_GSSUSEROK,
- &m);
+ buffer_init(&m);
+ buffer_put_string(&m, gssbuf->value, gssbuf->length);
+ buffer_put_string(&m, gssmic->value, gssmic->length);
- authenticated = buffer_get_int(&m);
+ mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_GSSCHECKMIC, &m);
+ mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_GSSCHECKMIC,
+ &m);
- buffer_free(&m);
- debug3("%s: user %sauthenticated",__func__, authenticated ? "" : "not ");
- return(authenticated);
+ major = buffer_get_int(&m);
+ buffer_free(&m);
+ return(major);
}
int
-mm_ssh_gssapi_localname(char **lname)
+mm_ssh_gssapi_userok(char *user)
{
- Buffer m;
+ Buffer m;
+ int authenticated = 0;
buffer_init(&m);
- mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_GSSLOCALNAME, &m);
- debug3("%s: waiting for MONITOR_ANS_GSSLOCALNAME", __func__);
- mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_GSSLOCALNAME,
- &m);
+ mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_GSSUSEROK, &m);
+ mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_GSSUSEROK,
+ &m);
- *lname = buffer_get_string(&m, NULL);
+ authenticated = buffer_get_int(&m);
- buffer_free(&m);
- if (lname[0] == '\0') {
- debug3("%s: gssapi identity mapping failed", __func__);
- } else {
- debug3("%s: gssapi identity mapped to %s", __func__, *lname);
- }
-
- return(0);
+ buffer_free(&m);
+ debug3("%s: user %sauthenticated",__func__, authenticated ? "" : "not ");
+ return (authenticated);
}
OM_uint32
mm_ssh_gssapi_sign(Gssctxt *ctx, gss_buffer_desc *data, gss_buffer_desc *hash) {
Buffer m;
OM_uint32 major;
+ u_int len;
buffer_init(&m);
buffer_put_string(&m, data->value, data->length);
mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_GSSSIGN, &m);
-
- debug3("%s: waiting for MONITOR_ANS_GSSSIGN",__func__);
mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_GSSSIGN, &m);
+
major=buffer_get_int(&m);
- hash->value = buffer_get_string(&m, &hash->length);
+ hash->value = buffer_get_string(&m, &len);
+ hash->length = len;
+ buffer_free(&m);
+
return(major);
}
-OM_uint32
-mm_gss_indicate_mechs(OM_uint32 *minor_status, gss_OID_set *mech_set)
-{
- Buffer m;
- OM_uint32 major;
- int i=0;
-
+char *
+mm_ssh_gssapi_last_error(Gssctxt *ctx, OM_uint32 *major, OM_uint32 *minor) {
+ Buffer m;
+ OM_uint32 maj,min;
+ char *errstr;
+
buffer_init(&m);
- mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_GSSMECHS, &m);
+ mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_GSSERR, &m);
+ mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_GSSERR, &m);
- debug3("%s: waiting for MONITOR_ANS_GSSMECHS",__func__);
- mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_GSSMECHS,
- &m);
- major=buffer_get_int(&m);
- *mech_set = xmalloc(sizeof(gss_OID_set_desc));
- (*mech_set)->count=buffer_get_int(&m);
- (*mech_set)->elements=xmalloc(sizeof(gss_OID_desc)*(*mech_set)->count);
- for (i=0; i < (*mech_set)->count; i++) {
- u_int length;
- (*mech_set)->elements[i].elements=buffer_get_string(&m, &length);
- (*mech_set)->elements[i].length = length;
- }
+ maj = buffer_get_int(&m);
+ min = buffer_get_int(&m);
- return(major);
-}
+ if (major) *major=maj;
+ if (minor) *minor=min;
+
+ errstr=buffer_get_string(&m,NULL);
+
+ buffer_free(&m);
+
+ return(errstr);
+}
OM_uint32
-mm_gss_display_status(OM_uint32 *minor_status, OM_uint32 status_value,
- int status_type, const gss_OID mech_type,
- OM_uint32 *message_context, gss_buffer_t status_string)
+mm_gss_indicate_mechs(OM_uint32 *minor_status, gss_OID_set *mech_set)
{
Buffer m;
- OM_uint32 major;
+ OM_uint32 major,minor;
+ int count;
+ gss_OID_desc oid;
+ u_int length;
buffer_init(&m);
- buffer_put_int(&m, status_value);
- buffer_put_int(&m, status_type);
- if (mech_type) {
- buffer_put_string(&m, mech_type->elements, mech_type->length);
- } else {
- buffer_put_string(&m, "", 0);
- }
- if (message_context) {
- buffer_put_int(&m, *message_context);
- } else {
- buffer_put_int(&m, 0);
- }
-
- mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_GSSSTAT, &m);
-
- debug3("%s: waiting for MONITOR_ANS_GSSMECHS",__func__);
- mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_GSSSTAT,
+ mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_GSSMECHS, &m);
+ mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_GSSMECHS,
&m);
+ major=buffer_get_int(&m);
+ count=buffer_get_int(&m);
- if (message_context) {
- *message_context = buffer_get_int(&m);
- } else {
- buffer_get_int(&m);
+ gss_create_empty_oid_set(&minor,mech_set);
+ while(count-->0) {
+ oid.elements=buffer_get_string(&m,&length);
+ oid.length=length;
+ gss_add_oid_set_member(&minor,&oid,mech_set);
}
- status_string->value = buffer_get_string(&m, &status_string->length);
- return major;
+ buffer_free(&m);
+
+ return(major);
}
-#endif /* GSSAPI */
-#ifdef GSI
-
-int mm_gsi_gridmap(char *subject_name, char **lname)
+int
+mm_ssh_gssapi_localname(char **lname)
{
Buffer m;
buffer_init(&m);
- buffer_put_cstring(&m, subject_name);
- mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_GSIGRIDMAP, &m);
+ mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_GSSLOCALNAME, &m);
- debug3("%s: waiting for MONITOR_ANS_GSIGRIDMAP", __func__);
- mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_GSIGRIDMAP,
+ debug3("%s: waiting for MONITOR_ANS_GSSLOCALNAME", __func__);
+ mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_GSSLOCALNAME,
&m);
*lname = buffer_get_string(&m, NULL);
buffer_free(&m);
if (lname[0] == '\0') {
- debug3("%s: gssapi identity %s mapping failed", __func__,
- subject_name);
+ debug3("%s: gssapi identity mapping failed", __func__);
} else {
- debug3("%s: gssapi identity %s mapped to %s", __func__,
- subject_name, *lname);
+ debug3("%s: gssapi identity mapped to %s", __func__, *lname);
}
return(0);
-
-}
-
-#endif /* GSI */
-
-#ifdef KRB4
-int
-mm_auth_krb4(Authctxt *authctxt, void *_auth, char **client, void *_reply)
-{
- KTEXT auth, reply;
- Buffer m;
- u_int rlen;
- int success = 0;
- char *p;
-
- debug3("%s entering", __func__);
- auth = _auth;
- reply = _reply;
-
- buffer_init(&m);
- buffer_put_string(&m, auth->dat, auth->length);
-
- mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_KRB4, &m);
- mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_KRB4, &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);
-}
-#endif
-
-#ifdef KRB5
-int
-mm_auth_krb5(void *ctx, void *argp, char **userp, void *resp)
-{
- krb5_data *tkt, *reply;
- Buffer m;
- int success;
-
- debug3("%s entering", __func__);
- tkt = (krb5_data *) argp;
- reply = (krb5_data *) resp;
-
- buffer_init(&m);
- buffer_put_string(&m, tkt->data, tkt->length);
-
- mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_KRB5, &m);
- mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_KRB5, &m);
-
- success = buffer_get_int(&m);
- if (success) {
- u_int len;
-
- *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 (success);
-}
-#endif
+}
+#endif /* GSSAPI */
andersk / gssapi-openssh.git / blobdiff