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Diffstat (limited to 'nis/nss_nisplus/nisplus-alias.c')
-rw-r--r--nis/nss_nisplus/nisplus-alias.c251
1 files changed, 251 insertions, 0 deletions
diff --git a/nis/nss_nisplus/nisplus-alias.c b/nis/nss_nisplus/nisplus-alias.c
new file mode 100644
index 0000000000..b0f035178e
--- /dev/null
+++ b/nis/nss_nisplus/nisplus-alias.c
@@ -0,0 +1,251 @@
+/* Copyright (C) 1997 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Thorsten Kukuk <kukuk@vt.uni-paderborn.de>, 1997.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ The GNU C Library 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
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include <nss.h>
+#include <errno.h>
+#include <ctype.h>
+#include <string.h>
+#include <aliases.h>
+#include <libc-lock.h>
+#include <rpcsvc/nis.h>
+#include <rpcsvc/nislib.h>
+
+#include "nss-nisplus.h"
+
+__libc_lock_define_initialized (static, lock)
+
+static nis_result *result = NULL;
+static nis_name *names = NULL;
+
+#define NISENTRYVAL(idx,col,res) \
+ ((res)->objects.objects_val[(idx)].zo_data.objdata_u.en_data.en_cols.en_cols_val[(col)].ec_value.ec_value_val)
+
+#define NISENTRYLEN(idx,col,res) \
+ ((res)->objects.objects_val[(idx)].zo_data.objdata_u.en_data.en_cols.en_cols_val[(col)].ec_value.ec_value_len)
+
+static int
+_nss_nisplus_parse_aliasent (nis_result *result, struct aliasent *alias,
+ char *buffer, size_t buflen)
+{
+ if (result == NULL)
+ return -1;
+
+ if ((result->status != NIS_SUCCESS && result->status != NIS_S_SUCCESS) ||
+ result->objects.objects_len != 1 ||
+ result->objects.objects_val[0].zo_data.zo_type != ENTRY_OBJ ||
+ strcmp(result->objects.objects_val[0].zo_data.objdata_u.en_data.en_type,
+ "mail_aliases") != 0 ||
+ result->objects.objects_val[0].zo_data.objdata_u.en_data.en_cols.en_cols_len < 2)
+ return -1;
+ else
+ {
+ char *first_unused = buffer + NISENTRYLEN(0, 1, result) + 1;
+ size_t room_left =
+ buflen - (buflen % __alignof__ (char *)) -
+ NISENTRYLEN(0, 1, result) - 2;
+ char *line;
+ char *cp;
+
+ if (NISENTRYLEN(0, 1, result) >= buflen)
+ {
+ /* The line is too long for our buffer. */
+ no_more_room:
+ __set_errno (ERANGE);
+ return -1;
+ }
+ else
+ {
+ strncpy (buffer, NISENTRYVAL(0, 1, result), NISENTRYLEN(0, 1, result));
+ buffer[NISENTRYLEN(0, 1, result)] = '\0';
+ }
+
+ if (NISENTRYLEN(0, 0, result) >= room_left)
+ goto no_more_room;
+
+ alias->alias_local = 0;
+ alias->alias_members_len = 0;
+ *first_unused = '\0';
+ ++first_unused;
+ strcpy (first_unused, NISENTRYVAL(0, 0, result));
+ first_unused[NISENTRYLEN(0, 0, result)] = '\0';
+ alias->alias_name = first_unused;
+
+ /* Terminate the line for any case. */
+ cp = strpbrk (alias->alias_name, "#\n");
+ if (cp != NULL)
+ *cp = '\0';
+
+ first_unused += strlen (alias->alias_name) +1;
+ /* Adjust the pointer so it is aligned for
+ storing pointers. */
+ first_unused += __alignof__ (char *) - 1;
+ first_unused -= ((first_unused - (char *) 0) % __alignof__ (char *));
+ alias->alias_members = (char **) first_unused;
+
+ line = buffer;
+
+ while (*line != '\0')
+ {
+ /* Skip leading blanks. */
+ while (isspace (*line))
+ line++;
+
+ if (*line == '\0')
+ break;
+
+ if (room_left < sizeof (char *))
+ goto no_more_room;
+ room_left -= sizeof (char *);
+ alias->alias_members[alias->alias_members_len] = line;
+
+ while (*line != '\0' && *line != ',')
+ line++;
+
+ if (line != alias->alias_members[alias->alias_members_len])
+ {
+ *line = '\0';
+ line++;
+ alias->alias_members_len++;
+ }
+ }
+
+ return alias->alias_members_len == 0 ? 0 : 1;
+ }
+}
+
+enum nss_status
+_nss_nisplus_setaliasent (void)
+{
+ __libc_lock_lock (lock);
+
+ if (result)
+ nis_freeresult (result);
+ result = NULL;
+ if (names)
+ {
+ nis_freenames (names);
+ names = NULL;
+ }
+
+ __libc_lock_unlock (lock);
+
+ return NSS_STATUS_SUCCESS;
+}
+
+enum nss_status
+_nss_nisplus_endaliasent (void)
+{
+ __libc_lock_lock (lock);
+
+ if (result)
+ nis_freeresult (result);
+ result = NULL;
+ if (names)
+ {
+ nis_freenames (names);
+ names = NULL;
+ }
+
+ __libc_lock_unlock (lock);
+
+ return NSS_STATUS_SUCCESS;
+}
+
+static enum nss_status
+internal_nisplus_getaliasent_r (struct aliasent *alias,
+ char *buffer, size_t buflen)
+{
+ int parse_res;
+
+ /* Get the next entry until we found a correct one. */
+ do
+ {
+ if (result == NULL)
+ {
+ names = nis_getnames("mail_aliases.org_dir");
+ if (names == NULL || names[0] == NULL)
+ return NSS_STATUS_UNAVAIL;
+
+ result = nis_first_entry(names[0]);
+ if (niserr2nss (result->status) != NSS_STATUS_SUCCESS)
+ return niserr2nss (result->status);
+ }
+ else
+ {
+ nis_result *res2;
+
+ res2 = nis_next_entry(names[0], &result->cookie);
+ nis_freeresult (result);
+ result = res2;
+ if (niserr2nss (result->status) != NSS_STATUS_SUCCESS)
+ return niserr2nss (result->status);
+ }
+
+ parse_res = _nss_nisplus_parse_aliasent (result, alias, buffer, buflen);
+ } while (!parse_res);
+
+ return NSS_STATUS_SUCCESS;
+}
+
+enum nss_status
+_nss_nisplus_getaliasent_r (struct aliasent *result, char *buffer,
+ size_t buflen)
+{
+ int status;
+
+ __libc_lock_lock (lock);
+
+ status = internal_nisplus_getaliasent_r (result, buffer, buflen);
+
+ __libc_lock_unlock (lock);
+
+ return status;
+}
+
+enum nss_status
+_nss_nisplus_getaliasbyname_r (const char *name, struct aliasent *alias,
+ char *buffer, size_t buflen)
+{
+ int parse_res;
+
+ if (name == NULL || strlen(name) > 8)
+ return NSS_STATUS_NOTFOUND;
+ else
+ {
+ nis_result *result;
+ char buf[strlen (name) + 30];
+
+ sprintf(buf, "[name=%s],mail_aliases.org_dir", name);
+
+ result = nis_list(buf, EXPAND_NAME, NULL, NULL);
+
+ if (niserr2nss (result->status) != NSS_STATUS_SUCCESS)
+ return niserr2nss (result->status);
+
+ parse_res = _nss_nisplus_parse_aliasent (result, alias, buffer, buflen);
+
+ if (parse_res)
+ return NSS_STATUS_SUCCESS;
+
+ if (!parse_res && errno == ERANGE)
+ return NSS_STATUS_TRYAGAIN;
+ else
+ return NSS_STATUS_NOTFOUND;
+ }
+}
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