X-Git-Url: https://mattmccutchen.net/rsync/rsync.git/blobdiff_plain/17a4977befedb841fde2c4c40ed39b74c3af4ba8..3f0211b63a6cdc4a2cecfd2a0dffeba172c86a47:/io.c

diff --git a/io.c b/io.c
index afe837f1..f886a559 100644
--- a/io.c
+++ b/io.c
@@ -413,15 +413,17 @@ static void read_msg_fd(void)
 		readfd(fd, buf, 4);
 		got_flist_entry_status(FES_NO_SEND, buf);
 		break;
-	case MSG_SOCKERR:
+	case MSG_ERROR_SOCKET:
 	case MSG_CLIENT:
 		if (!am_generator)
 			goto invalid_msg;
-		if (tag == MSG_SOCKERR)
+		if (tag == MSG_ERROR_SOCKET)
 			io_end_multiplex_out();
 		/* FALL THROUGH */
 	case MSG_INFO:
 	case MSG_ERROR:
+	case MSG_ERROR_XFER:
+	case MSG_WARNING:
 	case MSG_LOG:
 		while (len) {
 			n = len;
@@ -468,41 +470,38 @@ static void mplex_write(int fd, enum msgcode code, const char *buf, size_t len,
 	char buffer[BIGPATHBUFLEN]; /* Oversized for use by iconv code. */
 	size_t n = len;
 
-	SIVAL(buffer, 0, ((MPLEX_BASE + (int)code)<<24) + len);
-
 #ifdef ICONV_OPTION
-	if (convert && ic_send == (iconv_t)-1)
-#endif
-		convert = 0;
+	/* We need to convert buf before doing anything else so that we
+	 * can include the (converted) byte length in the message header. */
+	if (convert && ic_send != (iconv_t)-1) {
+		xbuf outbuf, inbuf;
+
+		INIT_XBUF(outbuf, buffer + 4, 0, sizeof buffer - 4);
+		INIT_XBUF(inbuf, (char*)buf, len, -1);
 
-	if (convert || n > 1024 - 4) /* BIGPATHBUFLEN can handle 1024 bytes */
-		n = 0;
+		iconvbufs(ic_send, &inbuf, &outbuf,
+			  ICB_INCLUDE_BAD | ICB_INCLUDE_INCOMPLETE);
+		if (inbuf.len > 0) {
+			rprintf(FERROR, "overflowed conversion buffer in mplex_write");
+			exit_cleanup(RERR_UNSUPPORTED);
+		}
+
+		n = len = outbuf.len;
+	} else
+#endif
+	if (n > 1024 - 4) /* BIGPATHBUFLEN can handle 1024 bytes */
+		n = 0;    /* We'd rather do 2 writes than too much memcpy(). */
 	else
 		memcpy(buffer + 4, buf, n);
 
+	SIVAL(buffer, 0, ((MPLEX_BASE + (int)code)<<24) + len);
+
 	defer_forwarding_keep = 1; /* defer_forwarding_messages++ on return */
 	writefd_unbuffered(fd, buffer, n+4);
 	defer_forwarding_keep = 0;
 
-	len -= n;
-	buf += n;
-
-#ifdef ICONV_OPTION
-	if (convert) {
-		xbuf outbuf, inbuf;
-
-		INIT_CONST_XBUF(outbuf, buffer);
-		INIT_XBUF(inbuf, (char*)buf, len, -1);
-
-		do {
-			iconvbufs(ic_send, &inbuf, &outbuf,
-				  ICB_INCLUDE_BAD | ICB_INCLUDE_INCOMPLETE);
-			writefd_unbuffered(fd, outbuf.buf, outbuf.len);
-		} while (inbuf.len);
-	} else
-#endif
-	if (len)
-		writefd_unbuffered(fd, buf, len);
+	if (len > n)
+		writefd_unbuffered(fd, buf+n, len-n);
 
 	if (!--defer_forwarding_messages && !no_flush)
 		msg_flush();
@@ -754,7 +753,7 @@ static int read_timeout(int fd, char *buf, size_t len)
 			/* Don't write errors on a dead socket. */
 			if (fd == sock_f_in) {
 				io_end_multiplex_out();
-				rsyserr(FSOCKERR, errno, "read error");
+				rsyserr(FERROR_SOCKET, errno, "read error");
 			} else
 				rsyserr(FERROR, errno, "read error");
 			exit_cleanup(RERR_STREAMIO);
@@ -1060,7 +1059,7 @@ static int readfd_unbuffered(int fd, char *buf, size_t len)
 				int pos = 0;
 
 				INIT_CONST_XBUF(outbuf, line);
-				inbuf.buf = ibuf;
+				INIT_XBUF(inbuf, ibuf, 0, -1);
 
 				while (msg_bytes) {
 					inbuf.len = msg_bytes > sizeof ibuf
@@ -1109,6 +1108,8 @@ static int readfd_unbuffered(int fd, char *buf, size_t len)
 			break;
 		case MSG_INFO:
 		case MSG_ERROR:
+		case MSG_ERROR_XFER:
+		case MSG_WARNING:
 			if (msg_bytes >= sizeof line) {
 			    overflow:
 				rprintf(FERROR,