Move all krb5 provider init functions

Put all init functions in their own file so that the other files can be
reused in other providers w/o having them in the way.

1 files changed, 189 insertions, 0 deletions

diff --git a/server/providers/krb5/krb5_init.c b/server/providers/krb5/krb5_init.c
new file mode 100644
index 00000000..676d078d
--- /dev/null
+++ b/server/providers/krb5/krb5_init.c
@@ -0,0 +1,189 @@
+/*
+    SSSD
+
+    Kerberos 5 Backend Module
+
+    Authors:
+        Sumit Bose <sbose@redhat.com>
+
+    Copyright (C) 2009 Red Hat
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include <sys/types.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <sys/stat.h>
+#include "providers/krb5/krb5_auth.h"
+
+struct bet_ops krb5_auth_ops = {
+    .handler = krb5_pam_handler,
+    .finalize = NULL,
+};
+
+struct bet_ops krb5_chpass_ops = {
+    .handler = krb5_pam_handler,
+    .finalize = NULL,
+};
+
+int sssm_krb5_auth_init(struct be_ctx *bectx,
+                        struct bet_ops **ops,
+                        void **pvt_auth_data)
+{
+    struct krb5_ctx *ctx = NULL;
+    char *value = NULL;
+    int int_value;
+    int ret;
+    struct tevent_signal *sige;
+    struct stat stat_buf;
+    unsigned v;
+    FILE *debug_filep;
+
+    ctx = talloc_zero(bectx, struct krb5_ctx);
+    if (!ctx) {
+        DEBUG(1, ("talloc failed.\n"));
+        return ENOMEM;
+    }
+
+    ctx->action = INIT_PW;
+
+    ret = confdb_get_string(bectx->cdb, ctx, bectx->conf_path,
+                            CONFDB_KRB5_KDCIP, NULL, &value);
+    if (ret != EOK) goto fail;
+    if (value == NULL) {
+        DEBUG(2, ("Missing krb5KDCIP, authentication might fail.\n"));
+    } else {
+        ret = setenv(SSSD_KRB5_KDC, value, 1);
+        if (ret != EOK) {
+            DEBUG(2, ("setenv %s failed, authentication might fail.\n",
+                      SSSD_KRB5_KDC));
+        }
+    }
+    ctx->kdcip = value;
+
+    ret = confdb_get_string(bectx->cdb, ctx, bectx->conf_path,
+                            CONFDB_KRB5_REALM, NULL, &value);
+    if (ret != EOK) goto fail;
+    if (value == NULL) {
+        DEBUG(4, ("Missing krb5REALM authentication might fail.\n"));
+    } else {
+        ret = setenv(SSSD_KRB5_REALM, value, 1);
+        if (ret != EOK) {
+            DEBUG(2, ("setenv %s failed, authentication might fail.\n",
+                      SSSD_KRB5_REALM));
+        }
+    }
+    ctx->realm = value;
+
+    ret = confdb_get_string(bectx->cdb, ctx, bectx->conf_path,
+                            CONFDB_KRB5_CCACHEDIR, "/tmp", &value);
+    if (ret != EOK) goto fail;
+    ret = lstat(value, &stat_buf);
+    if (ret != EOK) {
+        DEBUG(1, ("lstat for [%s] failed: [%d][%s].\n", value, errno,
+                  strerror(errno)));
+        goto fail;
+    }
+    if ( !S_ISDIR(stat_buf.st_mode) ) {
+        DEBUG(1, ("Value of krb5ccache_dir [%s] is not a directory.\n", value));
+        goto fail;
+    }
+    ctx->ccache_dir = value;
+
+    ret = confdb_get_string(bectx->cdb, ctx, bectx->conf_path,
+                            CONFDB_KRB5_CCNAME_TMPL,
+                            "FILE:%d/krb5cc_%U_XXXXXX",
+                            &value);
+    if (ret != EOK) goto fail;
+    if (value[0] != '/' && strncmp(value, "FILE:", 5) != 0) {
+        DEBUG(1, ("Currently only file based credential caches are supported "
+                  "and krb5ccname_template must start with '/' or 'FILE:'\n"));
+        goto fail;
+    }
+    ctx->ccname_template = value;
+
+    ret = confdb_get_string(bectx->cdb, ctx, bectx->conf_path,
+                            CONFDB_KRB5_CHANGEPW_PRINC,
+                            "kadmin/changepw",
+                            &value);
+    if (ret != EOK) goto fail;
+    if (strchr(value, '@') == NULL) {
+        value = talloc_asprintf_append(value, "@%s", ctx->realm);
+        if (value == NULL) {
+            DEBUG(7, ("talloc_asprintf_append failed.\n"));
+            goto fail;
+        }
+    }
+    ctx->changepw_principle = value;
+
+    ret = setenv(SSSD_KRB5_CHANGEPW_PRINCIPLE, ctx->changepw_principle, 1);
+    if (ret != EOK) {
+        DEBUG(2, ("setenv %s failed, password change might fail.\n",
+                  SSSD_KRB5_CHANGEPW_PRINCIPLE));
+    }
+
+    ret = confdb_get_int(bectx->cdb, ctx, bectx->conf_path,
+                         CONFDB_KRB5_AUTH_TIMEOUT, 15, &int_value);
+    if (ret != EOK) goto fail;
+    if (int_value <= 0) {
+        DEBUG(4, ("krb5auth_timeout has to be a positive value.\n"));
+        goto fail;
+    }
+    ctx->auth_timeout = int_value;
+
+/* TODO: set options */
+
+    sige = tevent_add_signal(bectx->ev, ctx, SIGCHLD, SA_SIGINFO,
+                             krb5_child_sig_handler, NULL);
+    if (sige == NULL) {
+        DEBUG(1, ("tevent_add_signal failed.\n"));
+        ret = ENOMEM;
+        goto fail;
+    }
+
+    if (debug_to_file != 0) {
+        ret = open_debug_file_ex("krb5_child", &debug_filep);
+        if (ret != EOK) {
+            DEBUG(0, ("Error setting up logging (%d) [%s]\n",
+                    ret, strerror(ret)));
+            goto fail;
+        }
+
+        ctx->child_debug_fd = fileno(debug_filep);
+        if (ctx->child_debug_fd == -1) {
+            DEBUG(0, ("fileno failed [%d][%s]\n", errno, strerror(errno)));
+            ret = errno;
+            goto fail;
+        }
+
+        v = fcntl(ctx->child_debug_fd, F_GETFD, 0);
+        fcntl(ctx->child_debug_fd, F_SETFD, v & ~FD_CLOEXEC);
+    }
+
+    *ops = &krb5_auth_ops;
+    *pvt_auth_data = ctx;
+    return EOK;
+
+fail:
+    talloc_free(ctx);
+    return ret;
+}
+
+int sssm_krb5_chpass_init(struct be_ctx *bectx,
+                          struct bet_ops **ops,
+                          void **pvt_auth_data)
+{
+    return sssm_krb5_auth_init(bectx, ops, pvt_auth_data);
+}