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Diffstat (limited to 'nis/nis_subr.c')
| -rw-r--r-- | nis/nis_subr.c | 310 |
1 files changed, 310 insertions, 0 deletions
diff --git a/nis/nis_subr.c b/nis/nis_subr.c new file mode 100644 index 0000000..74eb0b5 --- /dev/null +++ b/nis/nis_subr.c @@ -0,0 +1,310 @@ +/* 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 <errno.h> +#include <string.h> +#include <rpcsvc/nis.h> +#include <rpcsvc/nislib.h> + +nis_name +nis_leaf_of (const nis_name name) +{ + static char result[NIS_MAXNAMELEN + 1]; + + return nis_leaf_of_r (name, result, NIS_MAXNAMELEN); +} + +nis_name +nis_leaf_of_r (const nis_name name, char *buffer, size_t buflen) +{ + size_t i = 0; + + buffer[0] = '\0'; + + while (name[i] != '.' && name[i] != '\0') + i++; + + if (i > buflen - 1) + { + errno = ERANGE; + return NULL; + } + + if (i > 1) + strncpy (buffer, name, i - 1); + + return buffer; +} + +nis_name +nis_name_of (const nis_name name) +{ + static char result[NIS_MAXNAMELEN + 1]; + + return nis_name_of_r (name, result, NIS_MAXNAMELEN); +} + +nis_name +nis_name_of_r (const nis_name name, char *buffer, size_t buflen) +{ + char *local_domain; + int diff; + + local_domain = nis_local_directory (); + + diff = strlen (name) - strlen (local_domain); + if (diff <= 0) + return NULL; + + if (strcmp (&name[diff], local_domain) != 0) + return NULL; + + if ((size_t) diff >= buflen) + { + errno = ERANGE; + return NULL; + } + memcpy (buffer, name, diff - 1); + buffer[diff - 1] = '\0'; + + if (diff - 1 == 0) + return NULL; + + return buffer; +} + +nis_name +nis_domain_of (const nis_name name) +{ + static char result[NIS_MAXNAMELEN + 1]; + + return nis_domain_of_r (name, result, NIS_MAXNAMELEN); +} + +nis_name +nis_domain_of_r (const nis_name name, char *buffer, size_t buflen) +{ + char *cptr; + size_t cptr_len; + + cptr = strchr (name, '.'); /* XXX What happens if the NIS name + does not contain a `.'? */ + ++cptr; + cptr_len = strlen (cptr); + + if (cptr_len == 0) + strcpy (buffer, "."); + else if (cptr_len >= buflen) + { + errno = ERANGE; + return NULL; + } + else + memcpy (buffer, cptr, cptr_len + 1); + + return buffer; +} + +static int +count_dots (const nis_name str) +{ + int count = 0; + size_t i; + + for (i = 0; i < strlen (str); ++i) + if (str[i] == '.') + ++count; + + return count; +} + +nis_name * +nis_getnames (const nis_name name) +{ + nis_name *getnames = NULL; + char local_domain[NIS_MAXNAMELEN + 1]; + char *path, *cp; + int count, pos; + + + strncpy (local_domain, nis_local_directory (), NIS_MAXNAMELEN); + local_domain[NIS_MAXNAMELEN] = '\0'; + + count = 1; + if ((getnames = malloc ((count + 1) * sizeof (char *))) == NULL) + return NULL; + + /* Do we have a fully qualified NIS+ name ? If yes, give it back */ + if (name[strlen (name) - 1] == '.') + { + if ((getnames[0] = strdup (name)) == NULL) + { + free (getnames); + return NULL; + } + getnames[1] = NULL; + + return getnames; + } + + /* Get the search path, where we have to search "name" */ + path = getenv ("NIS_PATH"); + if (path == NULL) + path = strdupa ("$"); + else + path = strdupa (path); + + pos = 0; + + cp = strtok (path, ":"); + while (cp) + { + if (strcmp (cp, "$") == 0) + { + char *cptr = local_domain; + char *tmp; + + while (count_dots (cptr) >= 2) + { + if (pos >= count) + { + count += 5; + getnames = realloc (getnames, (count + 1) * sizeof (char *)); + } + tmp = malloc (strlen (cptr) + strlen (local_domain) + + strlen (name) + 2); + if (tmp == NULL) + return NULL; + + getnames[pos] = tmp; + tmp = stpcpy (tmp, name); + *tmp++ = '.'; + stpcpy (tmp, cptr); + + ++pos; + + while (*cptr != '.') + ++cptr; + ++cptr; + } + } + else + { + char *tmp; + + if (cp[strlen (cp) - 1] == '$') + { + tmp = malloc (strlen (cp) + strlen (local_domain) + + strlen (name) + 2); + if (tmp == NULL) + return NULL; + + tmp = stpcpy (tmp, name); + *tmp++ = '.'; + tmp = stpcpy (tmp, cp); + --tmp; + if (tmp[-1] != '.') + *tmp++ = '.'; + stpcpy (tmp, local_domain); + } + else + { + tmp = malloc (strlen (cp) + strlen (name) + 2); + if (tmp == NULL) + return NULL; + + tmp = stpcpy (tmp, name); + *tmp++ = '.'; + stpcpy (tmp, cp); + } + + if (pos > count) + { + count += 5; + getnames = realloc (getnames, (count + 1) * sizeof (char *)); + if (getnames == NULL) + return NULL; + } + getnames[pos] = tmp; + ++pos; + } + cp = strtok (NULL, ":"); + } + + getnames[pos] = NULL; + + return getnames; +} + +void +nis_freenames (nis_name *names) +{ + int i = 0; + + while (names[i] != NULL) + { + free (names[i]); + ++i; + } + + free (names); +} + +name_pos +nis_dir_cmp (const nis_name n1, const nis_name n2) +{ + int len1, len2; + + len1 = strlen (n1); + len2 = strlen (n2); + + if (len1 == len2) + { + if (strcmp (n1, n2) == 0) + return SAME_NAME; + else + return NOT_SEQUENTIAL; + } + + if (len1 < len2) + { + if (n2[len2 - len1 - 1] != '.') + return NOT_SEQUENTIAL; + else if (strcmp (&n2[len2 - len1], n1) == 0) + return HIGHER_NAME; + else + return NOT_SEQUENTIAL; + } + else + { + if (n1[len1 - len2 - 1] != '.') + return NOT_SEQUENTIAL; + else if (strcmp (&n1[len1 - len2], n2) == 0) + return LOWER_NAME; + else + return NOT_SEQUENTIAL; + + } +} + +void +nis_destroy_object (nis_object *obj) +{ + nis_free_object (obj); +} |