--- /dev/null
+#ifndef NO_GSSAPI
+
+#include <string.h>
+#include <gssapi/gssapi_krb5.h>
+#include "sshgss.h"
+#include "misc.h"
+
+typedef struct uxSsh_gss_ctx {
+ OM_uint32 maj_stat;
+ OM_uint32 min_stat;
+ gss_ctx_id_t ctx;
+} uxSsh_gss_ctx;
+
+int ssh_gss_init(void)
+{
+ /* On Windows this tries to load the SSPI library functions. On
+ Unix we assume we have GSSAPI at runtime if we were linked with
+ it at compile time */
+ return 1;
+}
+
+Ssh_gss_stat ssh_gss_indicate_mech(Ssh_gss_buf *mech)
+{
+ /* Copy constant into mech */
+ mech->len = gss_mech_krb5->length;
+ mech->data = gss_mech_krb5->elements;
+
+ return SSH_GSS_OK;
+}
+
+Ssh_gss_stat ssh_gss_import_name(char *host,
+ Ssh_gss_name *srv_name)
+{
+ OM_uint32 min_stat,maj_stat;
+ gss_buffer_desc host_buf;
+ char *pStr;
+
+ pStr = dupcat("host@", host, NULL);
+
+ host_buf.value = pStr;
+ host_buf.length = strlen(pStr);
+
+ maj_stat = gss_import_name(&min_stat, &host_buf,
+ GSS_C_NT_HOSTBASED_SERVICE,
+ (gss_name_t *)srv_name);
+ /* Release buffer */
+ sfree(pStr);
+ if (maj_stat == GSS_S_COMPLETE) return SSH_GSS_OK;
+ return SSH_GSS_FAILURE;
+}
+
+Ssh_gss_stat ssh_gss_acquire_cred(Ssh_gss_ctx *ctx)
+{
+ uxSsh_gss_ctx *uxctx = snew(uxSsh_gss_ctx);
+
+ uxctx->maj_stat = uxctx->min_stat = GSS_S_COMPLETE;
+ uxctx->ctx = GSS_C_NO_CONTEXT;
+ *ctx = (Ssh_gss_ctx) uxctx;
+
+ return SSH_GSS_OK;
+}
+
+Ssh_gss_stat ssh_gss_init_sec_context(Ssh_gss_ctx *ctx,
+ Ssh_gss_name srv_name,
+ int to_deleg,
+ Ssh_gss_buf *recv_tok,
+ Ssh_gss_buf *send_tok)
+{
+ uxSsh_gss_ctx *uxctx = (uxSsh_gss_ctx*) *ctx;
+ OM_uint32 ret_flags;
+
+ if (to_deleg) to_deleg = GSS_C_DELEG_FLAG;
+ uxctx->maj_stat = gss_init_sec_context(&uxctx->min_stat,
+ GSS_C_NO_CREDENTIAL,
+ &uxctx->ctx,
+ (gss_name_t) srv_name,
+ (gss_OID) gss_mech_krb5,
+ GSS_C_MUTUAL_FLAG |
+ GSS_C_INTEG_FLAG | to_deleg,
+ 0,
+ NULL, /* no channel bindings */
+ (gss_buffer_desc *)recv_tok,
+ NULL, /* ignore mech type */
+ (gss_buffer_desc *)send_tok,
+ &ret_flags,
+ NULL); /* ignore time_rec */
+
+ if (uxctx->maj_stat == GSS_S_COMPLETE) return SSH_GSS_S_COMPLETE;
+ if (uxctx->maj_stat == GSS_S_CONTINUE_NEEDED) return SSH_GSS_S_CONTINUE_NEEDED;
+ return SSH_GSS_FAILURE;
+}
+
+Ssh_gss_stat ssh_gss_display_status(Ssh_gss_ctx ctx, Ssh_gss_buf *buf)
+{
+ uxSsh_gss_ctx *uxctx = (uxSsh_gss_ctx *) ctx;
+ OM_uint32 lmin,lmax;
+ OM_uint32 ccc;
+ gss_buffer_desc msg_maj=GSS_C_EMPTY_BUFFER;
+ gss_buffer_desc msg_min=GSS_C_EMPTY_BUFFER;
+
+ /* Return empty buffer in case of failure */
+ SSH_GSS_CLEAR_BUF(buf);
+
+ /* get first mesg from GSS */
+ ccc=0;
+ lmax=gss_display_status(&lmin,uxctx->maj_stat,GSS_C_GSS_CODE,(gss_OID) gss_mech_krb5,&ccc,&msg_maj);
+
+ if (lmax != GSS_S_COMPLETE) return SSH_GSS_FAILURE;
+
+ /* get first mesg from Kerberos */
+ ccc=0;
+ lmax=gss_display_status(&lmin,uxctx->min_stat,GSS_C_MECH_CODE,(gss_OID) gss_mech_krb5,&ccc,&msg_min);
+
+ if (lmax != GSS_S_COMPLETE) {
+ gss_release_buffer(&lmin, &msg_maj);
+ return SSH_GSS_FAILURE;
+ }
+
+ /* copy data into buffer */
+ buf->len = msg_maj.length + msg_min.length + 1;
+ buf->data = snewn(buf->len + 1, char);
+
+ /* copy mem */
+ memcpy(buf->data, msg_maj.value, msg_maj.length);
+ buf->data[msg_maj.length] = ' ';
+ memcpy(buf->data + msg_maj.length + 1, msg_min.value, msg_min.length);
+ buf->data[buf->len] = 0;
+ /* free mem & exit */
+ gss_release_buffer(&lmin, &msg_maj);
+ gss_release_buffer(&lmin, &msg_min);
+ return SSH_GSS_OK;
+}
+
+Ssh_gss_stat ssh_gss_free_tok(Ssh_gss_buf *send_tok)
+{
+ OM_uint32 min_stat,maj_stat;
+ maj_stat = gss_release_buffer(&min_stat, (gss_buffer_desc *)send_tok);
+
+ if (maj_stat == GSS_S_COMPLETE) return SSH_GSS_OK;
+ return SSH_GSS_FAILURE;
+}
+
+Ssh_gss_stat ssh_gss_release_cred(Ssh_gss_ctx *ctx)
+{
+ uxSsh_gss_ctx *uxctx = (uxSsh_gss_ctx *) *ctx;
+ OM_uint32 min_stat;
+ OM_uint32 maj_stat=GSS_S_COMPLETE;
+
+ if (uxctx == NULL) return SSH_GSS_FAILURE;
+ if (uxctx->ctx != GSS_C_NO_CONTEXT)
+ maj_stat = gss_delete_sec_context(&min_stat,&uxctx->ctx,GSS_C_NO_BUFFER);
+ sfree(uxctx);
+
+ if (maj_stat == GSS_S_COMPLETE) return SSH_GSS_OK;
+ return SSH_GSS_FAILURE;
+}
+
+
+Ssh_gss_stat ssh_gss_release_name(Ssh_gss_name *srv_name)
+{
+ OM_uint32 min_stat,maj_stat;
+ maj_stat = gss_release_name(&min_stat, (gss_name_t) srv_name);
+
+ if (maj_stat == GSS_S_COMPLETE) return SSH_GSS_OK;
+ return SSH_GSS_FAILURE;
+}
+
+Ssh_gss_stat ssh_gss_get_mic(Ssh_gss_ctx ctx, Ssh_gss_buf *buf,
+ Ssh_gss_buf *hash)
+{
+ uxSsh_gss_ctx *uxctx = (uxSsh_gss_ctx *) ctx;
+ if (uxctx == NULL) return SSH_GSS_FAILURE;
+ return gss_get_mic(&(uxctx->min_stat),
+ uxctx->ctx,
+ 0,
+ (gss_buffer_desc *)buf,
+ (gss_buffer_desc *)hash);
+}
+
+Ssh_gss_stat ssh_gss_free_mic(Ssh_gss_buf *hash)
+{
+ /* On Unix this is the same freeing process as ssh_gss_free_tok. */
+ return ssh_gss_free_tok(hash);
+}
+
+#else
+
+/* Dummy function so this source file defines something if NO_GSSAPI
+ is defined. */
+
+int ssh_gss_init(void)
+{
+ return 1;
+}
+
+#endif
projects / u / mdw / putty / blobdiff