diff options
Diffstat (limited to 'server/providers/krb5/krb5_utils.c')
| -rw-r--r-- | server/providers/krb5/krb5_utils.c | 141 |
1 files changed, 141 insertions, 0 deletions
diff --git a/server/providers/krb5/krb5_utils.c b/server/providers/krb5/krb5_utils.c new file mode 100644 index 000000000..68254abce --- /dev/null +++ b/server/providers/krb5/krb5_utils.c @@ -0,0 +1,141 @@ +/* + SSSD + + Kerberos 5 Backend Module -- Utilities + + 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 <string.h> +#include <stdlib.h> + +#include "providers/krb5/krb5_utils.h" +#include "providers/krb5/krb5_auth.h" +#include "util/util.h" + +char *expand_ccname_template(TALLOC_CTX *mem_ctx, struct krb5child_req *kr, + const char *template) +{ + char *copy; + char *p; + char *n; + char *result = NULL; + + copy = talloc_strdup(mem_ctx, template); + if (copy == NULL) { + DEBUG(1, ("talloc_strdup failed.\n")); + return NULL; + } + + result = talloc_strdup(mem_ctx, ""); + if (result == NULL) { + DEBUG(1, ("talloc_strdup failed.\n")); + return NULL; + } + + p = copy; + while ( (n = strchr(p, '%')) != NULL) { + *n = '\0'; + n++; + if ( *n == '\0' ) { + DEBUG(1, ("format error, single %% at the end of the template.\n")); + return NULL; + } + + switch( *n ) { + case 'u': + if (kr->pd->user == NULL) { + DEBUG(1, ("Cannot expand user name template " + "because user name is empty.\n")); + return NULL; + } + result = talloc_asprintf_append(result, "%s%s", p, + kr->pd->user); + break; + case 'U': + if (kr->pd->pw_uid <= 0) { + DEBUG(1, ("Cannot expand uid template " + "because uid is invalid.\n")); + return NULL; + } + result = talloc_asprintf_append(result, "%s%d", p, + kr->pd->pw_uid); + break; + case 'p': + if (kr->pd->upn == NULL) { + DEBUG(1, ("Cannot expand user principal name template " + "because upn is empty.\n")); + return NULL; + } + result = talloc_asprintf_append(result, "%s%s", p, kr->pd->upn); + break; + case '%': + result = talloc_asprintf_append(result, "%s%%", p); + break; + case 'r': + if (kr->krb5_ctx->realm == NULL) { + DEBUG(1, ("Cannot expand realm template " + "because value is not available.\n")); + return NULL; + } + result = talloc_asprintf_append(result, "%s%s", p, + kr->krb5_ctx->realm); + break; + case 'h': + if (kr->homedir == NULL) { + DEBUG(1, ("Cannot expand home directory template " + "because the path is not available.\n")); + return NULL; + } + result = talloc_asprintf_append(result, "%s%s", p, kr->homedir); + break; + case 'd': + if (kr->krb5_ctx->ccache_dir == NULL) { + DEBUG(1, ("Cannot expand ccache directory template " + "because value is not available.\n")); + return NULL; + } + result = talloc_asprintf_append(result, "%s%s", p, + kr->krb5_ctx->ccache_dir); + break; + case 'P': + if (kr->pd->cli_pid == 0) { + DEBUG(1, ("Cannot expand PID template " + "because PID is not available.\n")); + return NULL; + } + result = talloc_asprintf_append(result, "%s%d", p, + kr->pd->cli_pid); + break; + default: + DEBUG(1, ("format error, unknown template [%%%c].\n", *n)); + return NULL; + } + + if (result == NULL) { + DEBUG(1, ("talloc_asprintf_append failed.\n")); + return NULL; + } + + p = n + 1; + } + + result = talloc_asprintf_append(result, "%s", p); + + return result; +} |