diff options
Diffstat (limited to 'nis/nss_nisplus/nisplus-rpc.c')
| -rw-r--r-- | nis/nss_nisplus/nisplus-rpc.c | 336 |
1 files changed, 147 insertions, 189 deletions
diff --git a/nis/nss_nisplus/nisplus-rpc.c b/nis/nss_nisplus/nisplus-rpc.c index 711c6bc273..31d48d17a3 100644 --- a/nis/nss_nisplus/nisplus-rpc.c +++ b/nis/nss_nisplus/nisplus-rpc.c @@ -1,5 +1,4 @@ -/* Copyright (C) 1997, 1998, 2001, 2002, 2003, 2005, 2006, 2007 - Free Software Foundation, Inc. +/* Copyright (C) 1997, 1998, 2001, 2002, 2003 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Thorsten Kukuk <kukuk@vt.uni-paderborn.de>, 1997. @@ -18,14 +17,13 @@ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. */ -#include <atomic.h> -#include <ctype.h> -#include <errno.h> #include <nss.h> +#include <errno.h> +#include <ctype.h> #include <string.h> +#include <bits/libc-lock.h> #include <rpc/netdb.h> #include <rpcsvc/nis.h> -#include <bits/libc-lock.h> #include "nss-nisplus.h" @@ -35,12 +33,11 @@ static nis_result *result; static nis_name tablename_val; static u_long tablename_len; -#define NISENTRYVAL(idx, col, res) \ - (NIS_RES_OBJECT (res)[idx].EN_data.en_cols.en_cols_val[col].ec_value.ec_value_val) - -#define NISENTRYLEN(idx, col, res) \ - (NIS_RES_OBJECT (res)[idx].EN_data.en_cols.en_cols_val[col].ec_value.ec_value_len) +#define NISENTRYVAL(idx,col,res) \ + ((res)->objects.objects_val[(idx)].EN_data.en_cols.en_cols_val[(col)].ec_value.ec_value_val) +#define NISENTRYLEN(idx,col,res) \ + ((res)->objects.objects_val[(idx)].EN_data.en_cols.en_cols_val[(col)].ec_value.ec_value_len) static int _nss_nisplus_parse_rpcent (nis_result *result, struct rpcent *rpc, @@ -49,16 +46,17 @@ _nss_nisplus_parse_rpcent (nis_result *result, struct rpcent *rpc, char *first_unused = buffer; size_t room_left = buflen; unsigned int i; - char *line; + char *p, *line; if (result == NULL) return 0; if ((result->status != NIS_SUCCESS && result->status != NIS_S_SUCCESS) - || __type_of (NIS_RES_OBJECT (result)) != NIS_ENTRY_OBJ - || strcmp (NIS_RES_OBJECT (result)[0].EN_data.en_type, "rpc_tbl") != 0 - || NIS_RES_OBJECT (result)[0].EN_data.en_cols.en_cols_len < 3) + || __type_of (result->objects.objects_val) != NIS_ENTRY_OBJ + || strcmp (result->objects.objects_val[0].EN_data.en_type, + "rpc_tbl") != 0 + || result->objects.objects_val[0].EN_data.en_cols.en_cols_len < 3) return 0; if (NISENTRYLEN (0, 0, result) >= room_left) @@ -71,43 +69,37 @@ _nss_nisplus_parse_rpcent (nis_result *result, struct rpcent *rpc, NISENTRYLEN (0, 0, result)); first_unused[NISENTRYLEN (0, 0, result)] = '\0'; rpc->r_name = first_unused; - size_t len = strlen (first_unused) + 1; - room_left -= len; - first_unused += len; - + room_left -= (strlen (first_unused) + 1); + first_unused += strlen (first_unused) + 1; rpc->r_number = atoi (NISENTRYVAL (0, 2, result)); + p = first_unused; - /* XXX Rewrite at some point to allocate the array first and then - copy the strings. It wasteful to first concatenate the strings - to just split them again later. */ - line = first_unused; - for (i = 0; i < NIS_RES_NUMOBJ (result); ++i) + line = p; + for (i = 0; i < result->objects.objects_len; ++i) { if (strcmp (NISENTRYVAL (i, 1, result), rpc->r_name) != 0) { if (NISENTRYLEN (i, 1, result) + 2 > room_left) goto no_more_room; - *first_unused++ = ' '; - first_unused = __stpncpy (first_unused, NISENTRYVAL (i, 1, result), - NISENTRYLEN (i, 1, result)); - room_left -= NISENTRYLEN (i, 1, result) + 1; + *p++ = ' '; + p = __stpncpy (p, NISENTRYVAL (i, 1, result), + NISENTRYLEN (i, 1, result)); + *p = '\0'; + room_left -= (NISENTRYLEN (i, 1, result) + 1); } } - *first_unused++ = '\0'; + ++p; + first_unused = p; /* Adjust the pointer so it is aligned for storing pointers. */ - size_t adjust = ((__alignof__ (char *) - - (first_unused - (char *) 0) % __alignof__ (char *)) - % __alignof__ (char *)); - if (room_left < adjust + sizeof (char *)) - goto no_more_room; - first_unused += adjust; - room_left -= adjust; + first_unused += __alignof__ (char *) - 1; + first_unused -= ((first_unused - (char *) 0) % __alignof__ (char *)); rpc->r_aliases = (char **) first_unused; - - /* For the terminating NULL pointer. */ + if (room_left < sizeof (char *)) + goto no_more_room; room_left -= sizeof (char *); + rpc->r_aliases[0] = NULL; i = 0; while (*line != '\0') @@ -123,45 +115,42 @@ _nss_nisplus_parse_rpcent (nis_result *result, struct rpcent *rpc, goto no_more_room; room_left -= sizeof (char *); - rpc->r_aliases[i++] = line; + rpc->r_aliases[i] = line; while (*line != '\0' && *line != ' ') ++line; if (*line == ' ') - *line++ = '\0'; + { + *line = '\0'; + ++line; + ++i; + } + else + rpc->r_aliases[i+1] = NULL; } - rpc->r_aliases[i] = NULL; return 1; } - static enum nss_status _nss_create_tablename (int *errnop) { if (tablename_val == NULL) { - const char *local_dir = nis_local_directory (); - size_t local_dir_len = strlen (local_dir); - static const char prefix[] = "rpc.org_dir."; + char buf [40 + strlen (nis_local_directory ())]; + char *p; - char *p = malloc (sizeof (prefix) + local_dir_len); - if (p == NULL) + p = __stpcpy (buf, "rpc.org_dir."); + p = __stpcpy (p, nis_local_directory ()); + tablename_val = __strdup (buf); + if (tablename_val == NULL) { *errnop = errno; return NSS_STATUS_TRYAGAIN; } - - memcpy (__stpcpy (p, prefix), local_dir, local_dir_len + 1); - - tablename_len = sizeof (prefix) - 1 + local_dir_len; - - atomic_write_barrier (); - - tablename_val = p; + tablename_len = strlen (tablename_val); } - return NSS_STATUS_SUCCESS; } @@ -170,20 +159,16 @@ enum nss_status _nss_nisplus_setrpcent (int stayopen) { enum nss_status status = NSS_STATUS_SUCCESS; + int err; __libc_lock_lock (lock); - if (result != NULL) - { - nis_freeresult (result); - result = NULL; - } + if (result) + nis_freeresult (result); + result = NULL; if (tablename_val == NULL) - { - int err; - status = _nss_create_tablename (&err); - } + status = _nss_create_tablename (&err); __libc_lock_unlock (lock); @@ -195,11 +180,9 @@ _nss_nisplus_endrpcent (void) { __libc_lock_lock (lock); - if (result != NULL) - { - nis_freeresult (result); - result = NULL; - } + if (result) + nis_freeresult (result); + result = NULL; __libc_lock_unlock (lock); @@ -229,23 +212,16 @@ internal_nisplus_getrpcent_r (struct rpcent *rpc, char *buffer, } result = nis_first_entry (tablename_val); - if (result == NULL) - { - *errnop = errno; - return NSS_STATUS_TRYAGAIN; - } if (niserr2nss (result->status) != NSS_STATUS_SUCCESS) return niserr2nss (result->status); } else { + nis_result *res; + saved_res = result; - result = nis_next_entry (tablename_val, &result->cookie); - if (result == NULL) - { - *errnop = errno; - return NSS_STATUS_TRYAGAIN; - } + res = nis_next_entry (tablename_val, &result->cookie); + result = res; if (niserr2nss (result->status) != NSS_STATUS_SUCCESS) { nis_freeresult (saved_res); @@ -267,8 +243,7 @@ internal_nisplus_getrpcent_r (struct rpcent *rpc, char *buffer, if (saved_res) nis_freeresult (saved_res); } - } - while (!parse_res); + } while (!parse_res); return NSS_STATUS_SUCCESS; } @@ -296,91 +271,77 @@ _nss_nisplus_getrpcbyname_r (const char *name, struct rpcent *rpc, if (tablename_val == NULL) { - __libc_lock_lock (lock); - enum nss_status status = _nss_create_tablename (errnop); - __libc_lock_unlock (lock); - if (status != NSS_STATUS_SUCCESS) return status; } if (name == NULL) return NSS_STATUS_NOTFOUND; + else + { + nis_result *result; + char buf[strlen (name) + 255 + tablename_len]; + int olderr = errno; - char buf[strlen (name) + 10 + tablename_len]; - int olderr = errno; - - /* Search at first in the alias list, and use the correct name - for the next search */ - snprintf (buf, sizeof (buf), "[name=%s],%s", name, tablename_val); - nis_result *result = nis_list (buf, FOLLOW_PATH | FOLLOW_LINKS | USE_DGRAM, - NULL, NULL); + /* Search at first in the alias list, and use the correct name + for the next search */ + sprintf (buf, "[name=%s],%s", name, tablename_val); + result = nis_list (buf, FOLLOW_PATH | FOLLOW_LINKS, NULL, NULL); - if (result != NULL) - { - char *bufptr = buf; - - /* If we did not find it, try it as original name. But if the - database is correct, we should find it in the first case, too */ - if ((result->status != NIS_SUCCESS - && result->status != NIS_S_SUCCESS) - || __type_of (result->objects.objects_val) != NIS_ENTRY_OBJ - || strcmp (result->objects.objects_val->EN_data.en_type, - "rpc_tbl") != 0 - || result->objects.objects_val->EN_data.en_cols.en_cols_len < 3) - snprintf (buf, sizeof (buf), "[cname=%s],%s", name, tablename_val); - else + if (result != NULL) { - /* We need to allocate a new buffer since there is no - guarantee the returned name has a length limit. */ - const char *entryval = NISENTRYVAL (0, 0, result); - size_t buflen = strlen (entryval) + 10 + tablename_len; - bufptr = alloca (buflen); - snprintf (bufptr, buflen, "[cname=%s],%s", - entryval, tablename_val); - } - - nis_freeresult (result); - result = nis_list (bufptr, FOLLOW_PATH | FOLLOW_LINKS | USE_DGRAM, - NULL, NULL); - } + /* If we do not find it, try it as original name. But if the + database is correct, we should find it in the first case, too */ + if ((result->status != NIS_SUCCESS + && result->status != NIS_S_SUCCESS) + || __type_of (result->objects.objects_val) != NIS_ENTRY_OBJ + || strcmp (result->objects.objects_val->EN_data.en_type, + "rpc_tbl") != 0 + || result->objects.objects_val->EN_data.en_cols.en_cols_len < 3) + sprintf (buf, "[cname=%s],%s", name, tablename_val); + else + sprintf (buf, "[cname=%s],%s", NISENTRYVAL (0, 0, result), + tablename_val); - if (result == NULL) - { - *errnop = ENOMEM; - return NSS_STATUS_TRYAGAIN; - } + nis_freeresult (result); + result = nis_list (buf, FOLLOW_PATH | FOLLOW_LINKS , NULL, NULL); + } - if (__builtin_expect (niserr2nss (result->status) != NSS_STATUS_SUCCESS, 0)) - { - enum nss_status status = niserr2nss (result->status); + if (result == NULL) + { + *errnop = ENOMEM; + return NSS_STATUS_TRYAGAIN; + } + if (niserr2nss (result->status) != NSS_STATUS_SUCCESS) + { + enum nss_status status = niserr2nss (result->status); - __set_errno (olderr); + __set_errno (olderr); - nis_freeresult (result); - return status; - } + nis_freeresult (result); + return status; + } - parse_res = _nss_nisplus_parse_rpcent (result, rpc, buffer, buflen, + parse_res = _nss_nisplus_parse_rpcent (result, rpc, buffer, buflen, errnop); - nis_freeresult (result); + nis_freeresult (result); - if (parse_res < 1) - { - if (parse_res == -1) + if (parse_res < 1) { - *errnop = ERANGE; - return NSS_STATUS_TRYAGAIN; - } + if (parse_res == -1) + { + *errnop = ERANGE; + return NSS_STATUS_TRYAGAIN; + } - __set_errno (olderr); - return NSS_STATUS_NOTFOUND; + __set_errno (olderr); + return NSS_STATUS_NOTFOUND; + } + return NSS_STATUS_SUCCESS; } - - return NSS_STATUS_SUCCESS; } enum nss_status @@ -389,58 +350,55 @@ _nss_nisplus_getrpcbynumber_r (const int number, struct rpcent *rpc, { if (tablename_val == NULL) { - __libc_lock_lock (lock); - enum nss_status status = _nss_create_tablename (errnop); - __libc_lock_unlock (lock); - if (status != NSS_STATUS_SUCCESS) return status; } - char buf[12 + 3 * sizeof (number) + tablename_len]; - int olderr = errno; + { + int parse_res; + nis_result *result; + char buf[100 + tablename_len]; + int olderr = errno; - snprintf (buf, sizeof (buf), "[number=%d],%s", number, tablename_val); + sprintf (buf, "[number=%d],%s", number, tablename_val); - nis_result *result = nis_list (buf, FOLLOW_LINKS | FOLLOW_PATH | USE_DGRAM, - NULL, NULL); + result = nis_list(buf, FOLLOW_LINKS | FOLLOW_PATH, NULL, NULL); - if (result == NULL) - { - *errnop = ENOMEM; - return NSS_STATUS_TRYAGAIN; - } + if (result == NULL) + { + *errnop = ENOMEM; + return NSS_STATUS_TRYAGAIN; + } + if (niserr2nss (result->status) != NSS_STATUS_SUCCESS) + { + enum nss_status status = niserr2nss (result->status); - if (__builtin_expect (niserr2nss (result->status) != NSS_STATUS_SUCCESS, 0)) - { - enum nss_status status = niserr2nss (result->status); - - __set_errno (olderr); - - nis_freeresult (result); - return status; - } - - int parse_res = _nss_nisplus_parse_rpcent (result, rpc, buffer, buflen, - errnop); - - nis_freeresult (result); - - if (parse_res < 1) - { - if (parse_res == -1) - { - *errnop = ERANGE; - return NSS_STATUS_TRYAGAIN; - } - else - { - __set_errno (olderr); - return NSS_STATUS_NOTFOUND; - } - } + __set_errno (olderr); - return NSS_STATUS_SUCCESS; + nis_freeresult (result); + return status; + } + + parse_res = _nss_nisplus_parse_rpcent (result, rpc, buffer, buflen, + errnop); + + nis_freeresult (result); + + if (parse_res < 1) + { + if (parse_res == -1) + { + *errnop = ERANGE; + return NSS_STATUS_TRYAGAIN; + } + else + { + __set_errno (olderr); + return NSS_STATUS_NOTFOUND; + } + } + return NSS_STATUS_SUCCESS; + } } |