diff options
Diffstat (limited to 'nis/nss_nisplus/nisplus-service.c')
| -rw-r--r-- | nis/nss_nisplus/nisplus-service.c | 341 |
1 files changed, 153 insertions, 188 deletions
diff --git a/nis/nss_nisplus/nisplus-service.c b/nis/nss_nisplus/nisplus-service.c index 607ce80b01..fbb6987e9e 100644 --- a/nis/nss_nisplus/nisplus-service.c +++ b/nis/nss_nisplus/nisplus-service.c @@ -1,5 +1,4 @@ -/* Copyright (C) 1997, 1998, 1999, 2001, 2002, 2003, 2005, 2006, 2007 - Free Software Foundation, Inc. +/* Copyright (C) 1997,1998,1999,2001,2002,2003 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Thorsten Kukuk <kukuk@suse.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 <nss.h> #include <errno.h> +#include <ctype.h> #include <netdb.h> -#include <nss.h> #include <string.h> -#include <rpcsvc/nis.h> #include <bits/libc-lock.h> +#include <rpcsvc/nis.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_servent (nis_result *result, struct servent *serv, @@ -48,14 +45,17 @@ _nss_nisplus_parse_servent (nis_result *result, struct servent *serv, { char *first_unused = buffer; size_t room_left = buflen; + unsigned int i; + 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)->EN_data.en_type, "services_tbl") != 0 - || NIS_RES_OBJECT (result)->EN_data.en_cols.en_cols_len < 4) + || __type_of (result->objects.objects_val) != NIS_ENTRY_OBJ + || strcmp (result->objects.objects_val->EN_data.en_type, + "services_tbl") != 0 + || result->objects.objects_val->EN_data.en_cols.en_cols_len < 4) return 0; if (NISENTRYLEN (0, 0, result) >= room_left) @@ -68,9 +68,8 @@ _nss_nisplus_parse_servent (nis_result *result, struct servent *serv, NISENTRYLEN (0, 0, result)); first_unused[NISENTRYLEN (0, 0, result)] = '\0'; serv->s_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; if (NISENTRYLEN (0, 2, result) >= room_left) goto no_more_room; @@ -78,45 +77,40 @@ _nss_nisplus_parse_servent (nis_result *result, struct servent *serv, NISENTRYLEN (0, 2, result)); first_unused[NISENTRYLEN (0, 2, result)] = '\0'; serv->s_proto = first_unused; - len = strlen (first_unused) + 1; - room_left -= len; - first_unused += len; + room_left -= strlen (first_unused) + 1; + first_unused += strlen (first_unused) + 1; serv->s_port = htons (atoi (NISENTRYVAL (0, 3, 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. */ - char *line = first_unused; - for (unsigned int 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), serv->s_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++ = '\0'; + 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 *)); serv->s_aliases = (char **) first_unused; - - /* For the terminating NULL pointer. */ + if (room_left < sizeof (char *)) + goto no_more_room; room_left -= (sizeof (char *)); + serv->s_aliases[0] = NULL; - unsigned int i = 0; + i = 0; while (*line != '\0') { /* Skip leading blanks. */ @@ -130,45 +124,42 @@ _nss_nisplus_parse_servent (nis_result *result, struct servent *serv, goto no_more_room; room_left -= sizeof (char *); - serv->s_aliases[i++] = line; + serv->s_aliases[i] = line; while (*line != '\0' && *line != ' ') ++line; if (*line == ' ') - *line++ = '\0'; + { + *line = '\0'; + ++line; + ++i; + } + else + serv->s_aliases[i+1] = NULL; } - serv->s_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[] = "services.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, "services.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; } @@ -181,11 +172,9 @@ _nss_nisplus_setservent (int stayopen) __libc_lock_lock (lock); - if (result != NULL) - { - nis_freeresult (result); - result = NULL; - } + if (result) + nis_freeresult (result); + result = NULL; if (tablename_val == NULL) status = _nss_create_tablename (&err); @@ -200,11 +189,9 @@ _nss_nisplus_endservent (void) { __libc_lock_lock (lock); - if (result != NULL) - { - nis_freeresult (result); - result = NULL; - } + if (result) + nis_freeresult (result); + result = NULL; __libc_lock_unlock (lock); @@ -234,23 +221,16 @@ internal_nisplus_getservent_r (struct servent *serv, 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); @@ -260,7 +240,7 @@ internal_nisplus_getservent_r (struct servent *serv, char *buffer, parse_res = _nss_nisplus_parse_servent (result, serv, buffer, buflen, errnop); - if (__builtin_expect (parse_res == -1, 0)) + if (parse_res == -1) { nis_freeresult (result); result = saved_res; @@ -282,9 +262,11 @@ enum nss_status _nss_nisplus_getservent_r (struct servent *result, char *buffer, size_t buflen, int *errnop) { + int status; + __libc_lock_lock (lock); - int status = internal_nisplus_getservent_r (result, buffer, buflen, errnop); + status = internal_nisplus_getservent_r (result, buffer, buflen, errnop); __libc_lock_unlock (lock); @@ -296,14 +278,12 @@ _nss_nisplus_getservbyname_r (const char *name, const char *protocol, struct servent *serv, char *buffer, size_t buflen, int *errnop) { + int parse_res; + 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; } @@ -313,84 +293,72 @@ _nss_nisplus_getservbyname_r (const char *name, const char *protocol, *errnop = EINVAL; return NSS_STATUS_NOTFOUND; } + else + { + nis_result *result; + char buf[strlen (name) + 255 + tablename_len]; + int olderr = errno; - size_t protocol_len = strlen (protocol); - char buf[strlen (name) + protocol_len + 17 + 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,proto=%s],%s", name, protocol, - 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,proto=%s],%s", name, protocol, + 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 (NIS_RES_OBJECT (result)) != NIS_ENTRY_OBJ - || strcmp (NIS_RES_OBJECT (result)->EN_data.en_type, - "services_tbl") != 0 - || NIS_RES_OBJECT (result)->EN_data.en_cols.en_cols_len < 4) - snprintf (buf, sizeof (buf), "[cname=%s,proto=%s],%s", name, protocol, - 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) + protocol_len + 17 - + tablename_len); - bufptr = alloca (buflen); - snprintf (bufptr, buflen, "[cname=%s,proto=%s],%s", - entryval, protocol, tablename_val); - } + /* 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, + "services_tbl") != 0 + || result->objects.objects_val->EN_data.en_cols.en_cols_len < 4) + sprintf (buf, "[cname=%s,proto=%s],%s", name, protocol, + tablename_val); + else + sprintf (buf, "[cname=%s,proto=%s],%s", + NISENTRYVAL (0, 0, result), protocol, tablename_val); - nis_freeresult (result); - result = nis_list (bufptr, FOLLOW_PATH | FOLLOW_LINKS | USE_DGRAM, - NULL, NULL); - } - - 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; + } - int parse_res = _nss_nisplus_parse_servent (result, serv, buffer, buflen, + parse_res = _nss_nisplus_parse_servent (result, serv, buffer, buflen, errnop); - nis_freeresult (result); + nis_freeresult (result); - if (__builtin_expect (parse_res < 1, 0)) - { - if (parse_res == -1) + if (parse_res < 1) { - *errnop = ERANGE; - return NSS_STATUS_TRYAGAIN; - } - else - { - __set_errno (olderr); - return NSS_STATUS_NOTFOUND; + if (parse_res == -1) + { + *errnop = ERANGE; + return NSS_STATUS_TRYAGAIN; + } + else + { + __set_errno (olderr); + return NSS_STATUS_NOTFOUND; + } } + return NSS_STATUS_SUCCESS; } - - return NSS_STATUS_SUCCESS; } enum nss_status @@ -400,12 +368,8 @@ _nss_nisplus_getservbyport_r (const int number, const char *protocol, { 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; } @@ -415,49 +379,50 @@ _nss_nisplus_getservbyport_r (const int number, const char *protocol, *errnop = EINVAL; return NSS_STATUS_NOTFOUND; } - - char buf[17 + 3 * sizeof (int) + strlen (protocol) + tablename_len]; - int olderr = errno; - - snprintf (buf, sizeof (buf), "[port=%d,proto=%s],%s", - number, protocol, tablename_val); - - nis_result *result = nis_list (buf, FOLLOW_PATH | FOLLOW_LINKS | USE_DGRAM, - NULL, NULL); - - if (result == NULL) - { - *errnop = ENOMEM; - return NSS_STATUS_TRYAGAIN; - } - - if (__builtin_expect (niserr2nss (result->status) != NSS_STATUS_SUCCESS, 0)) + else { - enum nss_status status = niserr2nss (result->status); + int parse_res; + nis_result *result; + char buf[60 + strlen (protocol) + tablename_len]; + int olderr = errno; - __set_errno (olderr); + sprintf (buf, "[port=%d,proto=%s],%s", + number, protocol, tablename_val); - nis_freeresult (result); - return status; - } - - int parse_res = _nss_nisplus_parse_servent (result, serv, buffer, buflen, - errnop); - nis_freeresult (result); + result = nis_list (buf, FOLLOW_PATH | FOLLOW_LINKS, NULL, NULL); - if (__builtin_expect (parse_res < 1, 0)) - { - if (parse_res == -1) + if (result == NULL) { - *errnop = ERANGE; + *errnop = ENOMEM; return NSS_STATUS_TRYAGAIN; } - else + if (niserr2nss (result->status) != NSS_STATUS_SUCCESS) { + enum nss_status status = niserr2nss (result->status); + __set_errno (olderr); - return NSS_STATUS_NOTFOUND; + + nis_freeresult (result); + return status; } - } - return NSS_STATUS_SUCCESS; + parse_res = _nss_nisplus_parse_servent (result, serv, 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; + } } |