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Diffstat (limited to 'nis/nss_nis/nis-service.c')
-rw-r--r--nis/nss_nis/nis-service.c115
1 files changed, 110 insertions, 5 deletions
diff --git a/nis/nss_nis/nis-service.c b/nis/nss_nis/nis-service.c
index 103b1e4115..cece55c283 100644
--- a/nis/nss_nis/nis-service.c
+++ b/nis/nss_nis/nis-service.c
@@ -172,7 +172,7 @@ internal_nis_getservent_r (struct servent *serv, char *buffer,
return NSS_STATUS_NOTFOUND;
}
p = strncpy (buffer, data->next->val, buflen);
- while (isspace (*p))
+ while (isspace (*p))
++p;
parse_res = _nss_files_parse_servent (p, serv, pdata, buflen, errnop);
@@ -215,6 +215,63 @@ _nss_nis_getservbyname_r (const char *name, char *protocol,
return NSS_STATUS_UNAVAIL;
}
+ /* If the protocol is given, we could try if our NIS server knows
+ about services.byservicename map. If yes, we only need one query */
+ if (protocol != NULL)
+ {
+ char key[strlen (name) + strlen (protocol) + 2];
+ char *cp, *domain, *result;
+ size_t keylen, len;
+
+ /* If this fails, the other solution will also fail. */
+ if (yp_get_default_domain (&domain))
+ return NSS_STATUS_UNAVAIL;
+
+ /* key is: "name/protocol" */
+ cp = stpcpy (key, name);
+ *cp++ = '/';
+ stpcpy (cp, protocol);
+ keylen = strlen (key);
+ status = yperr2nss (yp_match (domain, "services.byservicename", key,
+ keylen, &result, &len));
+
+ /* If we found the key, it's ok and parse the result. If not,
+ fall through and parse the complete table. */
+ if (status == NSS_STATUS_SUCCESS)
+ {
+ struct parser_data *pdata = (void *) buffer;
+ int parse_res;
+ char *p;
+
+ if ((size_t) (len + 1) > buflen)
+ {
+ free (result);
+ *errnop = ERANGE;
+ return NSS_STATUS_TRYAGAIN;
+ }
+
+ p = strncpy (buffer, result, len);
+ buffer[len] = '\0';
+ while (isspace (*p))
+ ++p;
+ free (result);
+ parse_res = _nss_files_parse_servent (p, serv, pdata,
+ buflen, errnop);
+ if (parse_res < 0)
+ {
+ if (parse_res == -1)
+ return NSS_STATUS_TRYAGAIN;
+ else
+ {
+ *errnop = ENOENT;
+ return NSS_STATUS_NOTFOUND;
+ }
+ }
+ else
+ return NSS_STATUS_SUCCESS;
+ }
+ }
+
status = internal_nis_setservent (&data);
if (status != NSS_STATUS_SUCCESS)
return status;
@@ -256,10 +313,57 @@ _nss_nis_getservbyport_r (int port, char *protocol, struct servent *serv,
enum nss_status status;
int found;
- if (protocol == NULL)
+ /* If the protocol is given, we only need one query */
+ if (protocol != NULL)
{
- *errnop = EINVAL;
- return NSS_STATUS_UNAVAIL;
+ char key[100 + strlen (protocol) + 2];
+ char *domain, *result;
+ size_t keylen, len;
+
+ /* If this fails, the other solution will also fail. */
+ if (yp_get_default_domain (&domain))
+ return NSS_STATUS_UNAVAIL;
+
+ /* key is: "port/protocol" */
+ keylen = snprintf (key, sizeof (key), "%d/%s", port, protocol);
+ status = yperr2nss (yp_match (domain, "services.byname", key,
+ keylen, &result, &len));
+
+ /* If we found the key, it's ok and parse the result. If not,
+ fall through and parse the complete table. */
+ if (status == NSS_STATUS_SUCCESS)
+ {
+ struct parser_data *pdata = (void *) buffer;
+ int parse_res;
+ char *p;
+
+ if ((size_t) (len + 1) > buflen)
+ {
+ free (result);
+ *errnop = ERANGE;
+ return NSS_STATUS_TRYAGAIN;
+ }
+
+ p = strncpy (buffer, result, len);
+ buffer[len] = '\0';
+ while (isspace (*p))
+ ++p;
+ free (result);
+ parse_res = _nss_files_parse_servent (p, serv, pdata,
+ buflen, errnop);
+ if (parse_res < 0)
+ {
+ if (parse_res == -1)
+ return NSS_STATUS_TRYAGAIN;
+ else
+ {
+ *errnop = ENOENT;
+ return NSS_STATUS_NOTFOUND;
+ }
+ }
+ else
+ return NSS_STATUS_SUCCESS;
+ }
}
status = internal_nis_setservent (&data);
@@ -270,7 +374,8 @@ _nss_nis_getservbyport_r (int port, char *protocol, struct servent *serv,
while (!found &&
((status = internal_nis_getservent_r (serv, buffer, buflen, errnop,
&data)) == NSS_STATUS_SUCCESS))
- if (serv->s_port == port && strcmp (serv->s_proto, protocol) == 0)
+ if (serv->s_port == port &&
+ (protocol == NULL || strcmp (serv->s_proto, protocol) == 0))
found = 1;
internal_nis_endservent (&data);