* @return a nss_status code
*/
enum nss_status
-_nss_gns_gethostbyname2_r(
- const char *name,
- int af,
- struct hostent * result,
- char *buffer,
- size_t buflen,
- int *errnop,
- int *h_errnop) {
-
- struct userdata u;
- enum nss_status status = NSS_STATUS_UNAVAIL;
- int i;
- size_t address_length, l, idx, astart;
-
- if (af == AF_UNSPEC)
+_nss_gns_gethostbyname2_r(const char *name,
+ int af,
+ struct hostent *result,
+ char *buffer,
+ size_t buflen,
+ int *errnop,
+ int *h_errnop)
+{
+ struct userdata u;
+ enum nss_status status = NSS_STATUS_UNAVAIL;
+ int i;
+ size_t address_length;
+ size_t l;
+ size_t idx;
+ size_t astart;
+
+ if (af == AF_UNSPEC)
#ifdef NSS_IPV6_ONLY
- af = AF_INET6;
+ af = AF_INET6;
#else
- af = AF_INET;
+ af = AF_INET;
#endif
#ifdef NSS_IPV4_ONLY
- if (af != AF_INET)
+ if (af != AF_INET)
#elif NSS_IPV6_ONLY
- if (af != AF_INET6)
+ if (af != AF_INET6)
#else
- if (af != AF_INET && af != AF_INET6)
+ if ( (af != AF_INET) &&
+ (af != AF_INET6) )
#endif
- {
- *errnop = EINVAL;
- *h_errnop = NO_RECOVERY;
-
- goto finish;
- }
-
- address_length = af == AF_INET ? sizeof(ipv4_address_t) : sizeof(ipv6_address_t);
- if (buflen <
- sizeof(char*)+ /* alias names */
- strlen(name)+1) { /* official name */
-
- *errnop = ERANGE;
- *h_errnop = NO_RECOVERY;
- status = NSS_STATUS_TRYAGAIN;
-
- goto finish;
- }
-
- u.count = 0;
- u.data_len = 0;
-
- i = gns_resolve_name(af, name, &u);
- if (-3 == i)
- {
- status = NSS_STATUS_NOTFOUND;
- goto finish;
- }
- if (-2 == i)
- {
- status = NSS_STATUS_UNAVAIL;
- goto finish;
- }
- if ( (-1 == i) ||
- (u.count == 0) )
- {
- *errnop = ETIMEDOUT;
- *h_errnop = HOST_NOT_FOUND;
- status = NSS_STATUS_NOTFOUND;
- goto finish;
- }
-
-
- /* Alias names */
- *((char**) buffer) = NULL;
- result->h_aliases = (char**) buffer;
- idx = sizeof(char*);
-
- /* Official name */
- strcpy(buffer+idx, name);
- result->h_name = buffer+idx;
- idx += strlen(name)+1;
-
- ALIGN(idx);
-
- result->h_addrtype = af;
- result->h_length = address_length;
-
- /* Check if there's enough space for the addresses */
- if (buflen < idx+u.data_len+sizeof(char*)*(u.count+1)) {
- *errnop = ERANGE;
- *h_errnop = NO_RECOVERY;
- status = NSS_STATUS_TRYAGAIN;
- goto finish;
- }
+ {
+ *errnop = EINVAL;
+ *h_errnop = NO_RECOVERY;
+
+ goto finish;
+ }
+ address_length = (af == AF_INET) ? sizeof(ipv4_address_t) : sizeof(ipv6_address_t);
+ if (buflen <
+ sizeof(char*)+ /* alias names */
+ strlen(name)+1)
+ { /* official name */
+ *errnop = ERANGE;
+ *h_errnop = NO_RECOVERY;
+ status = NSS_STATUS_TRYAGAIN;
+
+ goto finish;
+ }
+ u.count = 0;
+ u.data_len = 0;
+ i = gns_resolve_name (af,
+ name,
+ &u);
+ if (-3 == i)
+ {
+ status = NSS_STATUS_NOTFOUND;
+ goto finish;
+ }
+ if (-2 == i)
+ {
+ status = NSS_STATUS_UNAVAIL;
+ goto finish;
+ }
+ if ( (-1 == i) ||
+ (u.count == 0) )
+ {
+ *errnop = ETIMEDOUT;
+ *h_errnop = HOST_NOT_FOUND;
+ status = NSS_STATUS_NOTFOUND;
+ goto finish;
+ }
+ /* Alias names */
+ *((char**) buffer) = NULL;
+ result->h_aliases = (char**) buffer;
+ idx = sizeof(char*);
+
+ /* Official name */
+ strcpy (buffer+idx,
+ name);
+ result->h_name = buffer+idx;
+ idx += strlen (name)+1;
+
+ ALIGN(idx);
+
+ result->h_addrtype = af;
+ result->h_length = address_length;
+
+ /* Check if there's enough space for the addresses */
+ if (buflen < idx+u.data_len+sizeof(char*)*(u.count+1))
+ {
+ *errnop = ERANGE;
+ *h_errnop = NO_RECOVERY;
+ status = NSS_STATUS_TRYAGAIN;
+ goto finish;
+ }
/* Addresses */
- astart = idx;
- l = u.count*address_length;
- if (0 != l)
- memcpy(buffer+astart, &u.data, l);
- /* address_length is a multiple of 32bits, so idx is still aligned
- * correctly */
- idx += l;
-
- /* Address array address_length is always a multiple of 32bits */
- for (i = 0; i < u.count; i++)
- ((char**) (buffer+idx))[i] = buffer+astart+address_length*i;
- ((char**) (buffer+idx))[i] = NULL;
- result->h_addr_list = (char**) (buffer+idx);
-
- status = NSS_STATUS_SUCCESS;
+ astart = idx;
+ l = u.count*address_length;
+ if (0 != l)
+ memcpy (buffer+astart,
+ &u.data,
+ l);
+ /* address_length is a multiple of 32bits, so idx is still aligned
+ * correctly */
+ idx += l;
+
+ /* Address array address_length is always a multiple of 32bits */
+ for (i = 0; i < u.count; i++)
+ ((char**) (buffer+idx))[i] = buffer+astart+address_length*i;
+ ((char**) (buffer+idx))[i] = NULL;
+ result->h_addr_list = (char**) (buffer+idx);
+
+ status = NSS_STATUS_SUCCESS;
finish:
- return status;
+ return status;
}
+
/**
* The gethostbyname hook executed by nsswitch
*
* @param result the result hostent
* @param buffer the result buffer
* @param buflen length of the buffer
- * @param errnop idk
+ * @param errnop[out] the low-level error code to return to the application
* @param h_errnop idk
* @return a nss_status code
*/
enum nss_status
-_nss_gns_gethostbyname_r (
- const char *name,
- struct hostent *result,
- char *buffer,
- size_t buflen,
- int *errnop,
- int *h_errnop) {
-
- return _nss_gns_gethostbyname2_r(
- name,
- AF_UNSPEC,
- result,
- buffer,
- buflen,
- errnop,
- h_errnop);
+_nss_gns_gethostbyname_r (const char *name,
+ struct hostent *result,
+ char *buffer,
+ size_t buflen,
+ int *errnop,
+ int *h_errnop)
+{
+ return _nss_gns_gethostbyname2_r (name,
+ AF_UNSPEC,
+ result,
+ buffer,
+ buflen,
+ errnop,
+ h_errnop);
}
+
/**
* The gethostbyaddr hook executed by nsswitch
* We can't do this so we always return NSS_STATUS_UNAVAIL
* @param result the result hostent
* @param buffer the result buffer
* @param buflen length of the buffer
- * @param errnop idk
+ * @param errnop[out] the low-level error code to return to the application
* @param h_errnop idk
* @return NSS_STATUS_UNAVAIL
*/
enum nss_status
-_nss_gns_gethostbyaddr_r(
- const void* addr,
- int len,
- int af,
- struct hostent *result,
- char *buffer,
- size_t buflen,
- int *errnop,
- int *h_errnop) {
-
- *errnop = EINVAL;
- *h_errnop = NO_RECOVERY;
- //NOTE we allow to leak this into DNS so no NOTFOUND
- return NSS_STATUS_UNAVAIL;
+_nss_gns_gethostbyaddr_r (const void* addr,
+ int len,
+ int af,
+ struct hostent *result,
+ char *buffer,
+ size_t buflen,
+ int *errnop,
+ int *h_errnop)
+{
+ *errnop = EINVAL;
+ *h_errnop = NO_RECOVERY;
+ //NOTE we allow to leak this into DNS so no NOTFOUND
+ return NSS_STATUS_UNAVAIL;
}
projects / oweals / gnunet.git / blobdiff