diff options
Diffstat (limited to 'nis/nss_nisplus/nisplus-proto.c')
| -rw-r--r-- | nis/nss_nisplus/nisplus-proto.c | 226 |
1 files changed, 140 insertions, 86 deletions
diff --git a/nis/nss_nisplus/nisplus-proto.c b/nis/nss_nisplus/nisplus-proto.c index ee0341d0b9..1ee9a8944b 100644 --- a/nis/nss_nisplus/nisplus-proto.c +++ b/nis/nss_nisplus/nisplus-proto.c @@ -31,97 +31,146 @@ __libc_lock_define_initialized (static, lock) static nis_result *result = NULL; -static nis_name *names = NULL; - -#define ENTNAME protoent -#define DATABASE "protocols" -#define TRAILING_LIST_MEMBER p_aliases -#define TRAILING_LIST_SEPARATOR_P isspace -#include "../../nss/nss_files/files-parse.c" -LINE_PARSER -("#", - STRING_FIELD (result->p_name, isspace, 1); - INT_FIELD (result->p_proto, isspace, 1, 10,); -) +static nis_name tablename_val = NULL; +static u_long tablename_len = 0; #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) + ((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)].zo_data.objdata_u.en_data.en_cols.en_cols_val[(col)].ec_value.ec_value_len) + ((res)->objects.objects_val[(idx)].EN_data.en_cols.en_cols_val[(col)].ec_value.ec_value_len) static int _nss_nisplus_parse_protoent (nis_result * result, struct protoent *proto, char *buffer, size_t buflen) { - char *p = buffer; + char *first_unused = buffer; size_t room_left = buflen; unsigned int i; - struct parser_data *data = (void *) buffer; + char *p, *line; if (result == NULL) return 0; if ((result->status != NIS_SUCCESS && result->status != NIS_S_SUCCESS) || - 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, - "protocols_tbl") != 0 || - result->objects.objects_val[0].zo_data.objdata_u.en_data.en_cols.en_cols_len < 3) + __type_of (NIS_RES_OBJECT (result)) != ENTRY_OBJ || + strcmp (NIS_RES_OBJECT (result)->EN_data.en_type, "protocols_tbl") != 0 + || NIS_RES_OBJECT (result)->EN_data.en_cols.en_cols_len < 3) return 0; - memset (p, '\0', room_left); - /* Generate the protocols entry format and use the normal parser */ if (NISENTRYLEN (0, 0, result) + 1 > room_left) { + no_more_room: __set_errno (ERANGE); return 0; } - strncpy (p, NISENTRYVAL (0, 0, result), NISENTRYLEN (0, 0, result)); - room_left -= (NISENTRYLEN (0, 0, result) + 1); + strncpy (first_unused, NISENTRYVAL (0, 0, result), + NISENTRYLEN (0, 0, result)); + first_unused[NISENTRYLEN (0, 0, result)] = '\0'; + proto->p_name = first_unused; + room_left -= (strlen (first_unused) +1); + first_unused += strlen (first_unused) +1; + if (NISENTRYLEN (0, 2, result) + 1 > room_left) + goto no_more_room; + proto->p_proto = atoi (NISENTRYVAL (0, 2, result)); + p = first_unused; + + line = p; + for (i = 0; i < result->objects.objects_len; i++) { - __set_errno (ERANGE); - return 0; + if (strcmp (NISENTRYVAL (i, 1, result), proto->p_name) != 0) + { + if (NISENTRYLEN (i, 1, result) + 2 > room_left) + goto no_more_room; + p = stpcpy(p, " "); + p = stpncpy (p, NISENTRYVAL (i, 1, result), + NISENTRYLEN (i, 1, result)); + *p = '\0'; + room_left -= (NISENTRYLEN (i, 1, result) + 1); + } } - strcat (p, "\t"); - strncat (p, NISENTRYVAL (0, 2, result), NISENTRYLEN (0, 2, result)); - room_left -= (NISENTRYLEN (0, 2, result) + 1); - /* + 1: We overwrite the last \0 */ - - for (i = 1; i < result->objects.objects_len; i++) + ++p; + first_unused = p; + + /* Adjust the pointer so it is aligned for + storing pointers. */ + first_unused += __alignof__ (char *) - 1; + first_unused -= ((first_unused - (char *) 0) % __alignof__ (char *)); + proto->p_aliases = (char **) first_unused; + if (room_left < sizeof (char *)) + goto no_more_room; + room_left -= (sizeof (char *)); + proto->p_aliases[0] = NULL; + + i = 0; + while (*line != '\0') { - if (NISENTRYLEN (i, 1, result) + 1 > room_left) - { - __set_errno (ERANGE); - return 0; - } - strcat (p, " "); - strncat (p, NISENTRYVAL (i, 1, result), NISENTRYLEN (i, 1, result)); - room_left -= (NISENTRYLEN (i, 1, result) + 1); + /* Skip leading blanks. */ + while (isspace (*line)) + line++; + if (*line == '\0') + break; + + if (room_left < sizeof (char *)) + goto no_more_room; + + room_left -= sizeof (char *); + proto->p_aliases[i] = line; + + while (*line != '\0' && *line != ' ') + ++line; + + if (*line == ' ') + { + *line = '\0'; + ++line; + ++i; + } + else + proto->p_aliases[i+1] = NULL; } - return _nss_files_parse_protoent (p, proto, data, buflen); + return 1; +} + +static enum nss_status +_nss_create_tablename (void) +{ + if (tablename_val == NULL) + { + char buf [40 + strlen (nis_local_directory ())]; + char *p; + + p = stpcpy (buf, "protocols.org_dir."); + p = stpcpy (p, nis_local_directory ()); + tablename_val = strdup (buf); + if (tablename_val == NULL) + return NSS_STATUS_TRYAGAIN; + tablename_len = strlen (tablename_val); + } + return NSS_STATUS_SUCCESS; } enum nss_status _nss_nisplus_setprotoent (void) { + enum nss_status status = NSS_STATUS_SUCCESS; + __libc_lock_lock (lock); if (result) nis_freeresult (result); result = NULL; - if (names) - { - nis_freenames (names); - names = NULL; - } + + if (tablename_val == NULL) + status = _nss_create_tablename (); __libc_lock_unlock (lock); - return NSS_STATUS_SUCCESS; + return status; } enum nss_status @@ -132,11 +181,6 @@ _nss_nisplus_endprotoent (void) if (result) nis_freeresult (result); result = NULL; - if (names) - { - nis_freenames (names); - names = NULL; - } __libc_lock_unlock (lock); @@ -154,11 +198,11 @@ internal_nisplus_getprotoent_r (struct protoent *proto, char *buffer, { if (result == NULL) { - names = nis_getnames ("protocols.org_dir"); - if (names == NULL || names[0] == NULL) - return NSS_STATUS_UNAVAIL; + if (tablename_val == NULL) + if (_nss_create_tablename () != NSS_STATUS_SUCCESS) + return NSS_STATUS_UNAVAIL; - result = nis_first_entry (names[0]); + result = nis_first_entry (tablename_val); if (niserr2nss (result->status) != NSS_STATUS_SUCCESS) return niserr2nss (result->status); } @@ -166,7 +210,7 @@ internal_nisplus_getprotoent_r (struct protoent *proto, char *buffer, { nis_result *res; - res = nis_next_entry (names[0], &result->cookie); + res = nis_next_entry (tablename_val, &result->cookie); nis_freeresult (result); result = res; @@ -202,32 +246,37 @@ _nss_nisplus_getprotobyname_r (const char *name, struct protoent *proto, { int parse_res; + if (tablename_val == NULL) + if (_nss_create_tablename () != NSS_STATUS_SUCCESS) + return NSS_STATUS_UNAVAIL; + if (name == NULL) return NSS_STATUS_NOTFOUND; else { nis_result *result; - char buf[strlen (name) + 255]; + char buf[strlen (name) + 255 + tablename_len]; /* Search at first in the alias list, and use the correct name for the next search */ - sprintf (buf, "[name=%s],protocols.org_dir", name); - result = nis_list (buf, EXPAND_NAME, NULL, NULL); + sprintf (buf, "[name=%s],%s", name, tablename_val); + result = nis_list (buf, FOLLOW_PATH | FOLLOW_LINKS, 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) || - 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, + __type_of (result->objects.objects_val) != ENTRY_OBJ || + strcmp (result->objects.objects_val->EN_data.en_type, "protocols_tbl") != 0 || - result->objects.objects_val[0].zo_data.objdata_u.en_data.en_cols.en_cols_len < 3) - sprintf (buf, "[cname=%s],protocols.org_dir", name); + 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],protocols.org_dir", NISENTRYVAL (0, 0, result)); + sprintf (buf, "[cname=%s],%s", NISENTRYVAL (0, 0, result), + tablename_val); nis_freeresult (result); - result = nis_list (buf, EXPAND_NAME, NULL, NULL); + result = nis_list (buf, FOLLOW_PATH | FOLLOW_LINKS, NULL, NULL); if (niserr2nss (result->status) != NSS_STATUS_SUCCESS) { @@ -255,30 +304,35 @@ enum nss_status _nss_nisplus_getprotobynumber_r (const int number, struct protoent *proto, char *buffer, size_t buflen) { - int parse_res; - nis_result *result; - char buf[46]; - - snprintf (buf, sizeof (buf), "[number=%d],protocols.org_dir", number); + if (tablename_val == NULL) + if (_nss_create_tablename () != NSS_STATUS_SUCCESS) + return NSS_STATUS_UNAVAIL; + { + int parse_res; + nis_result *result; + char buf[46 + tablename_len]; - result = nis_list (buf, EXPAND_NAME, NULL, NULL); + snprintf (buf, sizeof (buf), "[number=%d],%s", number, tablename_val); - if (niserr2nss (result->status) != NSS_STATUS_SUCCESS) - { - enum nss_status status = niserr2nss (result->status); + result = nis_list (buf, FOLLOW_LINKS | FOLLOW_PATH, NULL, NULL); - nis_freeresult (result); - return status; - } + if (niserr2nss (result->status) != NSS_STATUS_SUCCESS) + { + enum nss_status status = niserr2nss (result->status); - parse_res = _nss_nisplus_parse_protoent (result, proto, buffer, buflen); + nis_freeresult (result); + return status; + } - nis_freeresult (result); - if (parse_res) - return NSS_STATUS_SUCCESS; + parse_res = _nss_nisplus_parse_protoent (result, proto, buffer, buflen); - if (!parse_res && errno == ERANGE) - return NSS_STATUS_TRYAGAIN; - else - return NSS_STATUS_NOTFOUND; + nis_freeresult (result); + if (parse_res) + return NSS_STATUS_SUCCESS; + + if (!parse_res && errno == ERANGE) + return NSS_STATUS_TRYAGAIN; + else + return NSS_STATUS_NOTFOUND; + } } |