diff options
Diffstat (limited to 'nis/nss_nisplus/nisplus-service.c')
| -rw-r--r-- | nis/nss_nisplus/nisplus-service.c | 253 |
1 files changed, 153 insertions, 100 deletions
diff --git a/nis/nss_nisplus/nisplus-service.c b/nis/nss_nisplus/nisplus-service.c index 6cad42d4f6..50bc7e24c1 100644 --- a/nis/nss_nisplus/nisplus-service.c +++ b/nis/nss_nisplus/nisplus-service.c @@ -31,107 +31,154 @@ __libc_lock_define_initialized (static, lock); static nis_result *result = NULL; -static nis_name *names = NULL; - -#define ENTNAME servent -#define DATABASE "services" -#define TRAILING_LIST_MEMBER s_aliases -#define TRAILING_LIST_SEPARATOR_P isspace -#include "../../nss/nss_files/files-parse.c" -#define ISSLASH(c) ((c) == '/') -LINE_PARSER -("#", - STRING_FIELD (result->s_name, isspace, 1); - INT_FIELD (result->s_port, ISSLASH, 10, 0, htons); - STRING_FIELD (result->s_proto, isspace, 1); - ) - +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_servent (nis_result *result, struct servent *serv, 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, - "services_tbl") != 0 || - result->objects.objects_val[0].zo_data.objdata_u.en_data.en_cols.en_cols_len < 4) + __type_of (result->objects.objects_val) != 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; - memset (p, '\0', room_left); - - /* Generate the services entry format and use the normal parser */ - if (NISENTRYLEN (0, 0, result) + 1 > room_left) + if (NISENTRYLEN (0, 0, result) >= 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); - - if (NISENTRYLEN (0, 3, result) + 1 > room_left) + strncpy (first_unused, NISENTRYVAL (0, 0, result), + NISENTRYLEN (0, 0, result)); + first_unused[NISENTRYLEN (0, 0, result)] = '\0'; + serv->s_name = first_unused; + room_left -= (strlen (first_unused) +1); + first_unused += strlen (first_unused) +1; + + if (NISENTRYLEN (0, 2, result) >= room_left) + goto no_more_room; + strncpy (first_unused, NISENTRYVAL (0, 2, result), + NISENTRYLEN (0, 2, result)); + first_unused[NISENTRYLEN (0, 2, result)] = '\0'; + serv->s_proto = first_unused; + room_left -= (strlen (first_unused) +1); + first_unused += strlen (first_unused) +1; + + serv->s_port = atoi (NISENTRYVAL (0, 3, 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), serv->s_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, 3, result), NISENTRYLEN (0, 3, result)); - room_left -= (NISENTRYLEN (0, 3, result) + 1); - if (NISENTRYLEN (0, 2, result) + 1 > room_left) + ++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 *)); + serv->s_aliases = (char **) first_unused; + if (room_left < sizeof (char *)) + goto no_more_room; + room_left -= (sizeof (char *)); + serv->s_aliases[0] = NULL; + + i = 0; + while (*line != '\0') { - __set_errno (ERANGE); - return 0; - } - strcat (p, "/"); - strncat (p, NISENTRYVAL (0, 2, result), NISENTRYLEN (0, 2, result)); - room_left -= (NISENTRYLEN (0, 2, result) + 1); + /* Skip leading blanks. */ + while (isspace (*line)) + line++; - for (i = 1; i < result->objects.objects_len; i++) - { - if (NISENTRYLEN (i, 1, result) + 1 > room_left) - { - __set_errno (ERANGE); - return 0; + if (*line == '\0') + break; + + if (room_left < sizeof (char *)) + goto no_more_room; + + room_left -= sizeof (char *); + serv->s_aliases[i] = line; + + while (*line != '\0' && *line != ' ') + ++line; + + if (*line == ' ') + { + *line = '\0'; + ++line; + ++i; } - strcat (p, " "); - strcat (p, NISENTRYVAL (i, 1, result)); - room_left -= (NISENTRYLEN (i, 1, result) + 1); + else + serv->s_aliases[i+1] = NULL; } - return _nss_files_parse_servent (p, serv, 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, "services.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_setservent (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 @@ -142,11 +189,6 @@ _nss_nisplus_endservent (void) if (result) nis_freeresult (result); result = NULL; - if (names) - { - nis_freenames (names); - names = NULL; - } __libc_lock_unlock (lock); @@ -164,11 +206,11 @@ internal_nisplus_getservent_r (struct servent *serv, char *buffer, { if (result == NULL) { - names = nis_getnames ("services.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); } @@ -176,7 +218,7 @@ internal_nisplus_getservent_r (struct servent *serv, 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; if (niserr2nss (result->status) != NSS_STATUS_SUCCESS) @@ -212,6 +254,10 @@ _nss_nisplus_getservbyname_r (const char *name, const char *protocol, { int parse_res; + if (tablename_val == NULL) + if (_nss_create_tablename () != NSS_STATUS_SUCCESS) + return NSS_STATUS_UNAVAIL; + if (name == NULL || protocol == NULL) { __set_errno (EINVAL); @@ -220,29 +266,30 @@ _nss_nisplus_getservbyname_r (const char *name, const char *protocol, 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,proto=%s],services.org_dir", name, - protocol); - result = nis_list (buf, EXPAND_NAME, NULL, NULL); + sprintf (buf, "[name=%s,proto=%s],%s", name, protocol, + 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, "services_tbl") != 0 || - result->objects.objects_val[0].zo_data.objdata_u.en_data.en_cols.en_cols_len < 4) - sprintf (buf, "[cname=%s,proto=%s],services.org_dir", name, protocol); + 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],services.org_dir", - NISENTRYVAL (0, 0, result), protocol); + sprintf (buf, "[cname=%s,proto=%s],%s", + NISENTRYVAL (0, 0, result), protocol, 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) { @@ -271,38 +318,44 @@ _nss_nisplus_getservbynumber_r (const int number, const char *protocol, struct servent *serv, char *buffer, size_t buflen) { - int parse_res; - nis_result *result; - char buf[60 + strlen (protocol)]; + if (tablename_val == NULL) + if (_nss_create_tablename () != NSS_STATUS_SUCCESS) + return NSS_STATUS_UNAVAIL; if (protocol == NULL) { __set_errno (EINVAL); return NSS_STATUS_NOTFOUND; } + else + { + int parse_res; + nis_result *result; + char buf[60 + strlen (protocol) + tablename_len]; - snprintf (buf, sizeof (buf), "[number=%d,proto=%s],services.org_dir", - number, protocol); + snprintf (buf, sizeof (buf), "[number=%d,proto=%s],%s", + number, protocol, tablename_val); - 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) - { - enum nss_status status = niserr2nss (result->status); + if (niserr2nss (result->status) != NSS_STATUS_SUCCESS) + { + enum nss_status status = niserr2nss (result->status); - nis_freeresult (result); - return status; - } + nis_freeresult (result); + return status; + } - parse_res = _nss_nisplus_parse_servent (result, serv, buffer, buflen); + parse_res = _nss_nisplus_parse_servent (result, serv, buffer, buflen); - nis_freeresult (result); + nis_freeresult (result); - if (parse_res) - return NSS_STATUS_SUCCESS; + if (parse_res) + return NSS_STATUS_SUCCESS; - if (!parse_res && errno == ERANGE) - return NSS_STATUS_TRYAGAIN; - else - return NSS_STATUS_NOTFOUND; + if (!parse_res && errno == ERANGE) + return NSS_STATUS_TRYAGAIN; + else + return NSS_STATUS_NOTFOUND; + } } |