+#include "utils.h"
+#include "xalloc.h"
+
+bool send_meta(connection_t *c, const char *buffer, int length) {
+ int outlen;
+ int result;
+
+ if(!c) {
+ logger(LOG_ERR, _("send_meta() called with NULL pointer!"));
+ abort();
+ }
+
+ ifdebug(META) logger(LOG_DEBUG, _("Sending %d bytes of metadata to %s (%s)"), length,
+ c->name, c->hostname);
+
+ if(!c->outbuflen)
+ c->last_flushed_time = now;
+
+ /* Find room in connection's buffer */
+ if(length + c->outbuflen > c->outbufsize) {
+ c->outbufsize = length + c->outbuflen;
+ c->outbuf = xrealloc(c->outbuf, c->outbufsize);
+ }
+
+ if(length + c->outbuflen + c->outbufstart > c->outbufsize) {
+ memmove(c->outbuf, c->outbuf + c->outbufstart, c->outbuflen);
+ c->outbufstart = 0;
+ }
+
+ /* Add our data to buffer */
+ if(c->status.encryptout) {
+ result = EVP_EncryptUpdate(c->outctx, (unsigned char *)c->outbuf + c->outbufstart + c->outbuflen,
+ &outlen, (unsigned char *)buffer, length);
+ if(!result || outlen < length) {
+ logger(LOG_ERR, _("Error while encrypting metadata to %s (%s): %s"),
+ c->name, c->hostname, ERR_error_string(ERR_get_error(), NULL));
+ return false;
+ } else if(outlen > length) {
+ logger(LOG_EMERG, _("Encrypted data too long! Heap corrupted!"));
+ abort();
+ }
+ c->outbuflen += outlen;
+ } else {
+ memcpy(c->outbuf + c->outbufstart + c->outbuflen, buffer, length);
+ c->outbuflen += length;
+ }
+
+ return true;
+}
+
+bool flush_meta(connection_t *c) {
+ int result;
+
+ ifdebug(META) logger(LOG_DEBUG, _("Flushing %d bytes to %s (%s)"),
+ c->outbuflen, c->name, c->hostname);
+
+ while(c->outbuflen) {
+ result = send(c->socket, c->outbuf + c->outbufstart, c->outbuflen, 0);
+ if(result <= 0) {
+ if(!errno || errno == EPIPE) {
+ ifdebug(CONNECTIONS) logger(LOG_NOTICE, _("Connection closed by %s (%s)"),
+ c->name, c->hostname);
+ } else if(errno == EINTR) {
+ continue;
+#ifdef EWOULDBLOCK
+ } else if(errno == EWOULDBLOCK) {
+ ifdebug(CONNECTIONS) logger(LOG_DEBUG, _("Flushing %d bytes to %s (%s) would block"),
+ c->outbuflen, c->name, c->hostname);
+ return true;
+#endif
+ } else {
+ logger(LOG_ERR, _("Flushing meta data to %s (%s) failed: %s"), c->name,
+ c->hostname, strerror(errno));
+ }
+
+ return false;
+ }