* Copyright (C) 1996-2001 Andrew Tridgell
* Copyright (C) 1996 Paul Mackerras
* Copyright (C) 2001, 2002 Martin Pool <mbp@samba.org>
- * Copyright (C) 2003, 2004, 2005, 2006 Wayne Davison
+ * Copyright (C) 2003-2009 Wayne Davison
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
+ * the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
+ * with this program; if not, visit the http://fsf.org website.
*/
/* Rsync provides its own multiplexing system, which is used to send
* io_start_multiplex_out() and io_start_multiplex_in(). */
#include "rsync.h"
+#include "ifuncs.h"
+#include "inums.h"
/** If no timeout is specified then use a 60 second select timeout */
#define SELECT_TIMEOUT 60
extern int bwlimit;
extern size_t bwlimit_writemax;
extern int io_timeout;
-extern int allowed_lull;
extern int am_server;
extern int am_daemon;
extern int am_sender;
extern int am_generator;
+extern int inc_recurse;
+extern int io_error;
extern int eol_nulls;
+extern int flist_eof;
+extern int list_only;
extern int read_batch;
-extern int csum_length;
+extern int protect_args;
extern int checksum_seed;
extern int protocol_version;
extern int remove_source_files;
extern int preserve_hard_links;
-extern char *filesfrom_host;
extern struct stats stats;
-extern struct file_list *the_file_list;
+extern struct file_list *cur_flist;
+#ifdef ICONV_OPTION
+extern int filesfrom_convert;
+extern iconv_t ic_send, ic_recv;
+#endif
-const char phase_unknown[] = "unknown";
+int csum_length = SHORT_SUM_LENGTH; /* initial value */
+int allowed_lull = 0;
int ignore_timeout = 0;
int batch_fd = -1;
-int batch_gen_fd = -1;
+int msgdone_cnt = 0;
/* Ignore an EOF error if non-zero. See whine_about_eof(). */
int kluge_around_eof = 0;
int sock_f_in = -1;
int sock_f_out = -1;
+static int iobuf_f_in = -1;
+static char *iobuf_in;
+static size_t iobuf_in_siz;
+static size_t iobuf_in_ndx;
+static size_t iobuf_in_remaining;
+
+static int iobuf_f_out = -1;
+static char *iobuf_out;
+static int iobuf_out_cnt;
+
+int flist_forward_from = -1;
+
static int io_multiplexing_out;
static int io_multiplexing_in;
static time_t last_io_in;
static int io_filesfrom_f_in = -1;
static int io_filesfrom_f_out = -1;
-static char io_filesfrom_buf[2048];
-static char *io_filesfrom_bp;
-static char io_filesfrom_lastchar;
-static int io_filesfrom_buflen;
-static int defer_forwarding_messages = 0;
+static xbuf ff_buf = EMPTY_XBUF;
+static char ff_lastchar;
+#ifdef ICONV_OPTION
+static xbuf iconv_buf = EMPTY_XBUF;
+#endif
+static int defer_forwarding_messages = 0, keep_defer_forwarding = 0;
static int select_timeout = SELECT_TIMEOUT;
static int active_filecnt = 0;
static OFF_T active_bytecnt = 0;
+static int first_message = 1;
-static void read_loop(int fd, char *buf, size_t len);
-
-struct flist_ndx_item {
- struct flist_ndx_item *next;
- int ndx;
+static char int_byte_extra[64] = {
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* (00 - 3F)/4 */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* (40 - 7F)/4 */
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* (80 - BF)/4 */
+ 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 5, 6, /* (C0 - FF)/4 */
};
-struct flist_ndx_list {
- struct flist_ndx_item *head, *tail;
-};
+#define REMOTE_OPTION_ERROR "rsync: on remote machine: -"
+#define REMOTE_OPTION_ERROR2 ": unknown option"
+
+enum festatus { FES_SUCCESS, FES_REDO, FES_NO_SEND };
-static struct flist_ndx_list redo_list, hlink_list;
+static void readfd(int fd, char *buffer, size_t N);
+static void writefd(int fd, const char *buf, size_t len);
+static void writefd_unbuffered(int fd, const char *buf, size_t len);
+static void mplex_write(int fd, enum msgcode code, const char *buf, size_t len, int convert);
+
+static flist_ndx_list redo_list, hlink_list;
struct msg_list_item {
struct msg_list_item *next;
- int len;
+ char convert;
char buf[1];
};
struct msg_list_item *head, *tail;
};
-static struct msg_list msg2genr, msg2sndr;
-
-static void flist_ndx_push(struct flist_ndx_list *lp, int ndx)
-{
- struct flist_ndx_item *item;
-
- if (!(item = new(struct flist_ndx_item)))
- out_of_memory("flist_ndx_push");
- item->next = NULL;
- item->ndx = ndx;
- if (lp->tail)
- lp->tail->next = item;
- else
- lp->head = item;
- lp->tail = item;
-}
+static struct msg_list msg_queue;
-static int flist_ndx_pop(struct flist_ndx_list *lp)
+static void got_flist_entry_status(enum festatus status, const char *buf)
{
- struct flist_ndx_item *next;
- int ndx;
+ int ndx = IVAL(buf, 0);
+ struct file_list *flist = flist_for_ndx(ndx, "got_flist_entry_status");
- if (!lp->head)
- return -1;
+ if (remove_source_files) {
+ active_filecnt--;
+ active_bytecnt -= F_LENGTH(flist->files[ndx - flist->ndx_start]);
+ }
- ndx = lp->head->ndx;
- next = lp->head->next;
- free(lp->head);
- lp->head = next;
- if (!next)
- lp->tail = NULL;
+ if (inc_recurse)
+ flist->in_progress--;
- return ndx;
+ switch (status) {
+ case FES_SUCCESS:
+ if (remove_source_files)
+ send_msg(MSG_SUCCESS, buf, 4, 0);
+ if (preserve_hard_links) {
+ struct file_struct *file = flist->files[ndx - flist->ndx_start];
+ if (F_IS_HLINKED(file)) {
+ flist_ndx_push(&hlink_list, ndx);
+ flist->in_progress++;
+ }
+ }
+ break;
+ case FES_REDO:
+ if (read_batch) {
+ if (inc_recurse)
+ flist->in_progress++;
+ break;
+ }
+ if (inc_recurse)
+ flist->to_redo++;
+ flist_ndx_push(&redo_list, ndx);
+ break;
+ case FES_NO_SEND:
+ break;
+ }
}
static void check_timeout(void)
}
/* Add a message to the pending MSG_* list. */
-static void msg_list_add(struct msg_list *lst, int code, char *buf, int len)
+static void msg_list_add(struct msg_list *lst, int code, const char *buf, int len, int convert)
{
struct msg_list_item *m;
int sz = len + 4 + sizeof m[0] - 1;
if (!(m = (struct msg_list_item *)new_array(char, sz)))
out_of_memory("msg_list_add");
m->next = NULL;
- m->len = len + 4;
+ m->convert = convert;
SIVAL(m->buf, 0, ((code+MPLEX_BASE)<<24) | len);
memcpy(m->buf + 4, buf, len);
if (lst->tail)
lst->tail = m;
}
+static inline int flush_a_msg(int fd)
+{
+ struct msg_list_item *m = msg_queue.head;
+ int len = IVAL(m->buf, 0) & 0xFFFFFF;
+ int tag = *((uchar*)m->buf+3) - MPLEX_BASE;
+
+ if (!(msg_queue.head = m->next))
+ msg_queue.tail = NULL;
+
+ defer_forwarding_messages++;
+ mplex_write(fd, tag, m->buf + 4, len, m->convert);
+ defer_forwarding_messages--;
+
+ free(m);
+
+ return len;
+}
+
+static void msg_flush(void)
+{
+ if (am_generator) {
+ while (msg_queue.head && io_multiplexing_out)
+ stats.total_written += flush_a_msg(sock_f_out) + 4;
+ } else {
+ while (msg_queue.head)
+ (void)flush_a_msg(msg_fd_out);
+ }
+}
+
+static void check_for_d_option_error(const char *msg)
+{
+ static char rsync263_opts[] = "BCDHIKLPRSTWabceghlnopqrtuvxz";
+ char *colon;
+ int saw_d = 0;
+
+ if (*msg != 'r'
+ || strncmp(msg, REMOTE_OPTION_ERROR, sizeof REMOTE_OPTION_ERROR - 1) != 0)
+ return;
+
+ msg += sizeof REMOTE_OPTION_ERROR - 1;
+ if (*msg == '-' || (colon = strchr(msg, ':')) == NULL
+ || strncmp(colon, REMOTE_OPTION_ERROR2, sizeof REMOTE_OPTION_ERROR2 - 1) != 0)
+ return;
+
+ for ( ; *msg != ':'; msg++) {
+ if (*msg == 'd')
+ saw_d = 1;
+ else if (*msg == 'e')
+ break;
+ else if (strchr(rsync263_opts, *msg) == NULL)
+ return;
+ }
+
+ if (saw_d) {
+ rprintf(FWARNING,
+ "*** Try using \"--old-d\" if remote rsync is <= 2.6.3 ***\n");
+ }
+}
+
/* Read a message from the MSG_* fd and handle it. This is called either
* during the early stages of being a local sender (up through the sending
* of the file list) or when we're the generator (to fetch the messages
{
char buf[2048];
size_t n;
+ struct file_list *flist;
int fd = msg_fd_in;
int tag, len;
/* Temporarily disable msg_fd_in. This is needed to avoid looping back
* to this routine from writefd_unbuffered(). */
+ no_flush++;
msg_fd_in = -1;
+ defer_forwarding_messages++;
- read_loop(fd, buf, 4);
+ readfd(fd, buf, 4);
tag = IVAL(buf, 0);
len = tag & 0xFFFFFF;
switch (tag) {
case MSG_DONE:
- if (len != 0 || !am_generator) {
- rprintf(FERROR, "invalid message %d:%d\n", tag, len);
+ if (len < 0 || len > 1 || !am_generator) {
+ invalid_msg:
+ rprintf(FERROR, "invalid message %d:%d [%s%s]\n",
+ tag, len, who_am_i(),
+ inc_recurse ? "/inc" : "");
exit_cleanup(RERR_STREAMIO);
}
- flist_ndx_push(&redo_list, -1);
+ if (len) {
+ readfd(fd, buf, len);
+ stats.total_read = read_varlong(fd, 3);
+ }
+ msgdone_cnt++;
break;
case MSG_REDO:
- if (len != 4 || !am_generator) {
- rprintf(FERROR, "invalid message %d:%d\n", tag, len);
- exit_cleanup(RERR_STREAMIO);
+ if (len != 4 || !am_generator)
+ goto invalid_msg;
+ readfd(fd, buf, 4);
+ got_flist_entry_status(FES_REDO, buf);
+ break;
+ case MSG_FLIST:
+ if (len != 4 || !am_generator || !inc_recurse)
+ goto invalid_msg;
+ readfd(fd, buf, 4);
+ /* Read extra file list from receiver. */
+ assert(iobuf_in != NULL);
+ assert(iobuf_f_in == fd);
+ if (DEBUG_GTE(FLIST, 2)) {
+ rprintf(FINFO, "[%s] receiving flist for dir %d\n",
+ who_am_i(), IVAL(buf,0));
}
- read_loop(fd, buf, 4);
- if (remove_source_files)
- decrement_active_files(IVAL(buf,0));
- flist_ndx_push(&redo_list, IVAL(buf,0));
+ flist = recv_file_list(fd);
+ flist->parent_ndx = IVAL(buf,0);
+#ifdef SUPPORT_HARD_LINKS
+ if (preserve_hard_links)
+ match_hard_links(flist);
+#endif
+ break;
+ case MSG_FLIST_EOF:
+ if (len != 0 || !am_generator || !inc_recurse)
+ goto invalid_msg;
+ flist_eof = 1;
+ break;
+ case MSG_IO_ERROR:
+ if (len != 4)
+ goto invalid_msg;
+ readfd(fd, buf, len);
+ io_error |= IVAL(buf, 0);
break;
case MSG_DELETED:
- if (len >= (int)sizeof buf || !am_generator) {
- rprintf(FERROR, "invalid message %d:%d\n", tag, len);
- exit_cleanup(RERR_STREAMIO);
- }
- read_loop(fd, buf, len);
- send_msg(MSG_DELETED, buf, len);
+ if (len >= (int)sizeof buf || !am_generator)
+ goto invalid_msg;
+ readfd(fd, buf, len);
+ send_msg(MSG_DELETED, buf, len, 1);
break;
case MSG_SUCCESS:
- if (len != 4 || !am_generator) {
- rprintf(FERROR, "invalid message %d:%d\n", tag, len);
- exit_cleanup(RERR_STREAMIO);
- }
- read_loop(fd, buf, len);
- if (remove_source_files) {
- decrement_active_files(IVAL(buf,0));
- send_msg(MSG_SUCCESS, buf, len);
- }
- if (preserve_hard_links)
- flist_ndx_push(&hlink_list, IVAL(buf,0));
+ if (len != 4 || !am_generator)
+ goto invalid_msg;
+ readfd(fd, buf, 4);
+ got_flist_entry_status(FES_SUCCESS, buf);
break;
- case MSG_SOCKERR:
- if (!am_generator) {
- rprintf(FERROR, "invalid message %d:%d\n", tag, len);
- exit_cleanup(RERR_STREAMIO);
- }
- close_multiplexing_out();
+ case MSG_NO_SEND:
+ if (len != 4 || !am_generator)
+ goto invalid_msg;
+ readfd(fd, buf, 4);
+ got_flist_entry_status(FES_NO_SEND, buf);
+ break;
+ case MSG_ERROR_SOCKET:
+ case MSG_ERROR_UTF8:
+ case MSG_CLIENT:
+ if (!am_generator)
+ goto invalid_msg;
+ 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;
if (n >= sizeof buf)
n = sizeof buf - 1;
- read_loop(fd, buf, n);
- rwrite(tag, buf, n);
+ readfd(fd, buf, n);
+ rwrite((enum logcode)tag, buf, n, !am_generator);
len -= n;
}
break;
exit_cleanup(RERR_STREAMIO);
}
+ no_flush--;
msg_fd_in = fd;
+ if (!--defer_forwarding_messages && !no_flush)
+ msg_flush();
}
/* This is used by the generator to limit how many file transfers can
* this, sender-side deletions were mostly happening at the end. */
void increment_active_files(int ndx, int itemizing, enum logcode code)
{
- /* TODO: tune these limits? */
- while (active_filecnt >= (active_bytecnt >= 128*1024 ? 10 : 50)) {
- if (hlink_list.head)
- check_for_finished_hlinks(itemizing, code);
- read_msg_fd();
+ while (1) {
+ /* TODO: tune these limits? */
+ int limit = active_bytecnt >= 128*1024 ? 10 : 50;
+ if (active_filecnt < limit)
+ break;
+ check_for_finished_files(itemizing, code, 0);
+ if (active_filecnt < limit)
+ break;
+ if (iobuf_out_cnt)
+ io_flush(NORMAL_FLUSH);
+ else
+ read_msg_fd();
}
active_filecnt++;
- active_bytecnt += the_file_list->files[ndx]->length;
+ active_bytecnt += F_LENGTH(cur_flist->files[ndx - cur_flist->ndx_start]);
}
-void decrement_active_files(int ndx)
+/* Write an message to a multiplexed stream. If this fails, rsync exits. */
+static void mplex_write(int fd, enum msgcode code, const char *buf, size_t len, int convert)
{
- active_filecnt--;
- active_bytecnt -= the_file_list->files[ndx]->length;
-}
+ char buffer[BIGPATHBUFLEN]; /* Oversized for use by iconv code. */
+ size_t n = len;
-/* Try to push messages off the list onto the wire. If we leave with more
- * to do, return 0. On error, return -1. If everything flushed, return 1.
- * This is only active in the receiver. */
-static int msg2genr_flush(int flush_it_all)
-{
- static int written = 0;
- struct timeval tv;
- fd_set fds;
+#ifdef ICONV_OPTION
+ /* 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;
- if (msg_fd_out < 0)
- return -1;
+ INIT_XBUF(outbuf, buffer + 4, 0, sizeof buffer - 4);
+ INIT_XBUF(inbuf, (char*)buf, len, (size_t)-1);
- while (msg2genr.head) {
- struct msg_list_item *m = msg2genr.head;
- int n = write(msg_fd_out, m->buf + written, m->len - written);
- if (n < 0) {
- if (errno == EINTR)
- continue;
- if (errno != EWOULDBLOCK && errno != EAGAIN)
- return -1;
- if (!flush_it_all)
- return 0;
- FD_ZERO(&fds);
- FD_SET(msg_fd_out, &fds);
- tv.tv_sec = select_timeout;
- tv.tv_usec = 0;
- if (!select(msg_fd_out+1, NULL, &fds, NULL, &tv))
- check_timeout();
- } else if ((written += n) == m->len) {
- msg2genr.head = m->next;
- if (!msg2genr.head)
- msg2genr.tail = NULL;
- free(m);
- written = 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);
}
- }
- return 1;
+
+ 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);
+
+ keep_defer_forwarding++; /* defer_forwarding_messages++ on return */
+ writefd_unbuffered(fd, buffer, n+4);
+ keep_defer_forwarding--;
+
+ if (len > n)
+ writefd_unbuffered(fd, buf+n, len-n);
+
+ if (!--defer_forwarding_messages && !no_flush)
+ msg_flush();
}
-int send_msg(enum msgcode code, char *buf, int len)
+int send_msg(enum msgcode code, const char *buf, int len, int convert)
{
if (msg_fd_out < 0) {
if (!defer_forwarding_messages)
- return io_multiplex_write(code, buf, len);
+ return io_multiplex_write(code, buf, len, convert);
if (!io_multiplexing_out)
return 0;
- msg_list_add(&msg2sndr, code, buf, len);
+ msg_list_add(&msg_queue, code, buf, len, convert);
return 1;
}
- msg_list_add(&msg2genr, code, buf, len);
- msg2genr_flush(NORMAL_FLUSH);
+ if (flist_forward_from >= 0)
+ msg_list_add(&msg_queue, code, buf, len, convert);
+ else
+ mplex_write(msg_fd_out, code, buf, len, convert);
return 1;
}
-int get_redo_num(int itemizing, enum logcode code)
+void send_msg_int(enum msgcode code, int num)
{
- while (1) {
- if (hlink_list.head)
- check_for_finished_hlinks(itemizing, code);
- if (redo_list.head)
- break;
- read_msg_fd();
- }
+ char numbuf[4];
+ SIVAL(numbuf, 0, num);
+ send_msg(code, numbuf, 4, 0);
+}
+
+void wait_for_receiver(void)
+{
+ if (io_flush(FULL_FLUSH))
+ return;
+ read_msg_fd();
+}
+int get_redo_num(void)
+{
return flist_ndx_pop(&redo_list);
}
* things at the same time: send the sender a list of what files we're
* processing and read the incoming file+info list from the sender. We do
* this by augmenting the read_timeout() function to copy this data. It
- * uses the io_filesfrom_buf to read a block of data from f_in (when it is
- * ready, since it might be a pipe) and then blast it out f_out (when it
- * is ready to receive more data).
+ * uses ff_buf to read a block of data from f_in (when it is ready, since
+ * it might be a pipe) and then blast it out f_out (when it is ready to
+ * receive more data).
*/
void io_set_filesfrom_fds(int f_in, int f_out)
{
io_filesfrom_f_in = f_in;
io_filesfrom_f_out = f_out;
- io_filesfrom_bp = io_filesfrom_buf;
- io_filesfrom_lastchar = '\0';
- io_filesfrom_buflen = 0;
+ alloc_xbuf(&ff_buf, 2048);
+#ifdef ICONV_OPTION
+ if (protect_args)
+ alloc_xbuf(&iconv_buf, 1024);
+#endif
}
/* It's almost always an error to get an EOF when we're trying to read from the
}
rprintf(FERROR, RSYNC_NAME ": connection unexpectedly closed "
- "(%.0f bytes received so far) [%s]\n",
- (double)stats.total_read, who_am_i());
+ "(%s bytes received so far) [%s]\n",
+ big_num(stats.total_read), who_am_i());
exit_cleanup(RERR_STREAMIO);
}
{
int n, cnt = 0;
- io_flush(NORMAL_FLUSH);
+ io_flush(FULL_FLUSH);
while (cnt == 0) {
/* until we manage to read *something* */
FD_ZERO(&r_fds);
FD_ZERO(&w_fds);
FD_SET(fd, &r_fds);
- if (msg2genr.head) {
- FD_SET(msg_fd_out, &w_fds);
- if (msg_fd_out > maxfd)
- maxfd = msg_fd_out;
- }
if (io_filesfrom_f_out >= 0) {
int new_fd;
- if (io_filesfrom_buflen == 0) {
+ if (ff_buf.len == 0) {
if (io_filesfrom_f_in >= 0) {
FD_SET(io_filesfrom_f_in, &r_fds);
new_fd = io_filesfrom_f_in;
count = select(maxfd + 1, &r_fds, &w_fds, NULL, &tv);
if (count <= 0) {
- if (errno == EBADF)
+ if (errno == EBADF) {
+ defer_forwarding_messages = 0;
exit_cleanup(RERR_SOCKETIO);
+ }
check_timeout();
continue;
}
- if (msg2genr.head && FD_ISSET(msg_fd_out, &w_fds))
- msg2genr_flush(NORMAL_FLUSH);
-
if (io_filesfrom_f_out >= 0) {
- if (io_filesfrom_buflen) {
+ if (ff_buf.len) {
if (FD_ISSET(io_filesfrom_f_out, &w_fds)) {
int l = write(io_filesfrom_f_out,
- io_filesfrom_bp,
- io_filesfrom_buflen);
+ ff_buf.buf + ff_buf.pos,
+ ff_buf.len);
if (l > 0) {
- if (!(io_filesfrom_buflen -= l))
- io_filesfrom_bp = io_filesfrom_buf;
+ if (!(ff_buf.len -= l))
+ ff_buf.pos = 0;
else
- io_filesfrom_bp += l;
- } else {
+ ff_buf.pos += l;
+ } else if (errno != EINTR) {
/* XXX should we complain? */
io_filesfrom_f_out = -1;
}
}
} else if (io_filesfrom_f_in >= 0) {
if (FD_ISSET(io_filesfrom_f_in, &r_fds)) {
- int l = read(io_filesfrom_f_in,
- io_filesfrom_buf,
- sizeof io_filesfrom_buf);
+#ifdef ICONV_OPTION
+ xbuf *ibuf = filesfrom_convert ? &iconv_buf : &ff_buf;
+#else
+ xbuf *ibuf = &ff_buf;
+#endif
+ int l = read(io_filesfrom_f_in, ibuf->buf, ibuf->size);
if (l <= 0) {
- /* Send end-of-file marker */
- io_filesfrom_buf[0] = '\0';
- io_filesfrom_buf[1] = '\0';
- io_filesfrom_buflen = io_filesfrom_lastchar? 2 : 1;
- io_filesfrom_f_in = -1;
+ if (l == 0 || errno != EINTR) {
+ /* Send end-of-file marker */
+ memcpy(ff_buf.buf, "\0\0", 2);
+ ff_buf.len = ff_lastchar? 2 : 1;
+ ff_buf.pos = 0;
+ io_filesfrom_f_in = -1;
+ }
} else {
+#ifdef ICONV_OPTION
+ if (filesfrom_convert) {
+ iconv_buf.pos = 0;
+ iconv_buf.len = l;
+ iconvbufs(ic_send, &iconv_buf, &ff_buf,
+ ICB_EXPAND_OUT|ICB_INCLUDE_BAD|ICB_INCLUDE_INCOMPLETE);
+ l = ff_buf.len;
+ }
+#endif
if (!eol_nulls) {
- char *s = io_filesfrom_buf + l;
+ char *s = ff_buf.buf + l;
/* Transform CR and/or LF into '\0' */
- while (s-- > io_filesfrom_buf) {
+ while (s-- > ff_buf.buf) {
if (*s == '\n' || *s == '\r')
*s = '\0';
}
}
- if (!io_filesfrom_lastchar) {
+ if (!ff_lastchar) {
/* Last buf ended with a '\0', so don't
* let this buf start with one. */
- while (l && !*io_filesfrom_bp)
- io_filesfrom_bp++, l--;
+ while (l && ff_buf.buf[ff_buf.pos] == '\0')
+ ff_buf.pos++, l--;
}
if (!l)
- io_filesfrom_bp = io_filesfrom_buf;
+ ff_buf.pos = 0;
else {
- char *f = io_filesfrom_bp;
+ char *f = ff_buf.buf + ff_buf.pos;
char *t = f;
char *eob = f + l;
/* Eliminate any multi-'\0' runs. */
f++, l--;
}
}
- io_filesfrom_lastchar = f[-1];
+ ff_lastchar = f[-1];
}
- io_filesfrom_buflen = l;
+ ff_buf.len = l;
}
}
}
/* Don't write errors on a dead socket. */
if (fd == sock_f_in) {
- close_multiplexing_out();
- rsyserr(FSOCKERR, errno, "read error");
+ io_end_multiplex_out();
+ rsyserr(FERROR_SOCKET, errno, "read error");
} else
rsyserr(FERROR, errno, "read error");
exit_cleanup(RERR_STREAMIO);
return cnt;
}
-/**
- * Read a line into the "fname" buffer (which must be at least MAXPATHLEN
- * characters long).
- */
-int read_filesfrom_line(int fd, char *fname)
+/* Read a line into the "buf" buffer. */
+int read_line(int fd, char *buf, size_t bufsiz, int flags)
{
- char ch, *s, *eob = fname + MAXPATHLEN - 1;
+ char ch, *s, *eob;
int cnt;
- int reading_remotely = filesfrom_host != NULL;
- int nulls = eol_nulls || reading_remotely;
+
+#ifdef ICONV_OPTION
+ if (flags & RL_CONVERT && iconv_buf.size < bufsiz)
+ realloc_xbuf(&iconv_buf, bufsiz + 1024);
+#endif
start:
- s = fname;
+#ifdef ICONV_OPTION
+ s = flags & RL_CONVERT ? iconv_buf.buf : buf;
+#else
+ s = buf;
+#endif
+ eob = s + bufsiz - 1;
while (1) {
cnt = read(fd, &ch, 1);
if (cnt < 0 && (errno == EWOULDBLOCK
|| errno == EINTR || errno == EAGAIN)) {
struct timeval tv;
- fd_set fds;
- FD_ZERO(&fds);
- FD_SET(fd, &fds);
+ fd_set r_fds, e_fds;
+ FD_ZERO(&r_fds);
+ FD_SET(fd, &r_fds);
+ FD_ZERO(&e_fds);
+ FD_SET(fd, &e_fds);
tv.tv_sec = select_timeout;
tv.tv_usec = 0;
- if (!select(fd+1, &fds, NULL, NULL, &tv))
+ if (!select(fd+1, &r_fds, NULL, &e_fds, &tv))
check_timeout();
+ /*if (FD_ISSET(fd, &e_fds))
+ rprintf(FINFO, "select exception on fd %d\n", fd); */
continue;
}
if (cnt != 1)
break;
- if (nulls? !ch : (ch == '\r' || ch == '\n')) {
- /* Skip empty lines if reading locally. */
- if (!reading_remotely && s == fname)
+ if (flags & RL_EOL_NULLS ? ch == '\0' : (ch == '\r' || ch == '\n')) {
+ /* Skip empty lines if dumping comments. */
+ if (flags & RL_DUMP_COMMENTS && s == buf)
continue;
break;
}
}
*s = '\0';
- /* Dump comments. */
- if (*fname == '#' || *fname == ';')
+ if (flags & RL_DUMP_COMMENTS && (*buf == '#' || *buf == ';'))
goto start;
- return s - fname;
+#ifdef ICONV_OPTION
+ if (flags & RL_CONVERT) {
+ xbuf outbuf;
+ INIT_XBUF(outbuf, buf, 0, bufsiz);
+ iconv_buf.pos = 0;
+ iconv_buf.len = s - iconv_buf.buf;
+ iconvbufs(ic_recv, &iconv_buf, &outbuf,
+ ICB_INCLUDE_BAD | ICB_INCLUDE_INCOMPLETE);
+ outbuf.buf[outbuf.len] = '\0';
+ return outbuf.len;
+ }
+#endif
+
+ return s - buf;
}
-static char *iobuf_out;
-static int iobuf_out_cnt;
+void read_args(int f_in, char *mod_name, char *buf, size_t bufsiz, int rl_nulls,
+ char ***argv_p, int *argc_p, char **request_p)
+{
+ int maxargs = MAX_ARGS;
+ int dot_pos = 0;
+ int argc = 0;
+ char **argv, *p;
+ int rl_flags = (rl_nulls ? RL_EOL_NULLS : 0);
+
+#ifdef ICONV_OPTION
+ rl_flags |= (protect_args && ic_recv != (iconv_t)-1 ? RL_CONVERT : 0);
+#endif
+
+ if (!(argv = new_array(char *, maxargs)))
+ out_of_memory("read_args");
+ if (mod_name && !protect_args)
+ argv[argc++] = "rsyncd";
-void io_start_buffering_out(void)
+ while (1) {
+ if (read_line(f_in, buf, bufsiz, rl_flags) == 0)
+ break;
+
+ if (argc == maxargs-1) {
+ maxargs += MAX_ARGS;
+ if (!(argv = realloc_array(argv, char *, maxargs)))
+ out_of_memory("read_args");
+ }
+
+ if (dot_pos) {
+ if (request_p) {
+ *request_p = strdup(buf);
+ request_p = NULL;
+ }
+ if (mod_name)
+ glob_expand_module(mod_name, buf, &argv, &argc, &maxargs);
+ else
+ glob_expand(buf, &argv, &argc, &maxargs);
+ } else {
+ if (!(p = strdup(buf)))
+ out_of_memory("read_args");
+ argv[argc++] = p;
+ if (*p == '.' && p[1] == '\0')
+ dot_pos = argc;
+ }
+ }
+ argv[argc] = NULL;
+
+ glob_expand(NULL, NULL, NULL, NULL);
+
+ *argc_p = argc;
+ *argv_p = argv;
+}
+
+int io_start_buffering_out(int f_out)
{
- if (iobuf_out)
- return;
+ if (iobuf_out) {
+ assert(f_out == iobuf_f_out);
+ return 0;
+ }
if (!(iobuf_out = new_array(char, IO_BUFFER_SIZE)))
out_of_memory("io_start_buffering_out");
iobuf_out_cnt = 0;
+ iobuf_f_out = f_out;
+ return 1;
}
-static char *iobuf_in;
-static size_t iobuf_in_siz;
-
-void io_start_buffering_in(void)
+int io_start_buffering_in(int f_in)
{
- if (iobuf_in)
- return;
+ if (iobuf_in) {
+ assert(f_in == iobuf_f_in);
+ return 0;
+ }
iobuf_in_siz = 2 * IO_BUFFER_SIZE;
if (!(iobuf_in = new_array(char, iobuf_in_siz)))
out_of_memory("io_start_buffering_in");
+ iobuf_f_in = f_in;
+ return 1;
}
-void io_end_buffering(void)
+void io_end_buffering_in(void)
{
- io_flush(NORMAL_FLUSH);
- if (!io_multiplexing_out) {
- free(iobuf_out);
- iobuf_out = NULL;
- }
+ if (!iobuf_in)
+ return;
+ free(iobuf_in);
+ iobuf_in = NULL;
+ iobuf_in_ndx = 0;
+ iobuf_in_remaining = 0;
+ iobuf_f_in = -1;
}
-void maybe_flush_socket(void)
+void io_end_buffering_out(void)
{
- if (iobuf_out && iobuf_out_cnt && time(NULL) - last_io_out >= 5)
+ if (!iobuf_out)
+ return;
+ io_flush(FULL_FLUSH);
+ free(iobuf_out);
+ iobuf_out = NULL;
+ iobuf_f_out = -1;
+}
+
+void maybe_flush_socket(int important)
+{
+ if (iobuf_out && iobuf_out_cnt
+ && (important || time(NULL) - last_io_out >= 5))
io_flush(NORMAL_FLUSH);
}
if (!iobuf_out || !iobuf_out_cnt) {
if (protocol_version < 29)
return; /* there's nothing we can do */
- write_int(sock_f_out, the_file_list->count);
- write_shortint(sock_f_out, ITEM_IS_NEW);
+ if (protocol_version >= 30)
+ send_msg(MSG_NOOP, "", 0, 0);
+ else {
+ write_int(sock_f_out, cur_flist->used);
+ write_shortint(sock_f_out, ITEM_IS_NEW);
+ }
}
if (iobuf_out)
io_flush(NORMAL_FLUSH);
}
}
+void start_flist_forward(int f_in)
+{
+ assert(iobuf_out != NULL);
+ assert(iobuf_f_out == msg_fd_out);
+ flist_forward_from = f_in;
+}
+
+void stop_flist_forward()
+{
+ flist_forward_from = -1;
+ io_flush(FULL_FLUSH);
+}
+
/**
* Continue trying to read len bytes - don't return until len has been
* read.
*/
static int readfd_unbuffered(int fd, char *buf, size_t len)
{
- static size_t remaining;
- static size_t iobuf_in_ndx;
size_t msg_bytes;
int tag, cnt = 0;
char line[BIGPATHBUFLEN];
- if (!iobuf_in || fd != sock_f_in)
+ if (!iobuf_in || fd != iobuf_f_in)
return read_timeout(fd, buf, len);
- if (!io_multiplexing_in && remaining == 0) {
- remaining = read_timeout(fd, iobuf_in, iobuf_in_siz);
+ if (!io_multiplexing_in && iobuf_in_remaining == 0) {
+ iobuf_in_remaining = read_timeout(fd, iobuf_in, iobuf_in_siz);
iobuf_in_ndx = 0;
}
while (cnt == 0) {
- if (remaining) {
- len = MIN(len, remaining);
+ if (iobuf_in_remaining) {
+ len = MIN(len, iobuf_in_remaining);
memcpy(buf, iobuf_in + iobuf_in_ndx, len);
iobuf_in_ndx += len;
- remaining -= len;
+ iobuf_in_remaining -= len;
cnt = len;
break;
}
iobuf_in_siz = msg_bytes;
}
read_loop(fd, iobuf_in, msg_bytes);
- remaining = msg_bytes;
+ iobuf_in_remaining = msg_bytes;
iobuf_in_ndx = 0;
break;
+ case MSG_NOOP:
+ if (am_sender)
+ maybe_send_keepalive();
+ break;
+ case MSG_IO_ERROR:
+ if (msg_bytes != 4)
+ goto invalid_msg;
+ read_loop(fd, line, msg_bytes);
+ send_msg_int(MSG_IO_ERROR, IVAL(line, 0));
+ io_error |= IVAL(line, 0);
+ break;
case MSG_DELETED:
if (msg_bytes >= sizeof line)
goto overflow;
- read_loop(fd, line, msg_bytes);
+#ifdef ICONV_OPTION
+ if (ic_recv != (iconv_t)-1) {
+ xbuf outbuf, inbuf;
+ char ibuf[512];
+ int add_null = 0;
+
+ INIT_CONST_XBUF(outbuf, line);
+ INIT_XBUF(inbuf, ibuf, 0, (size_t)-1);
+
+ while (msg_bytes) {
+ inbuf.len = msg_bytes > sizeof ibuf
+ ? sizeof ibuf : msg_bytes;
+ read_loop(fd, inbuf.buf, inbuf.len);
+ if (!(msg_bytes -= inbuf.len)
+ && !ibuf[inbuf.len-1])
+ inbuf.len--, add_null = 1;
+ if (iconvbufs(ic_send, &inbuf, &outbuf,
+ ICB_INCLUDE_BAD | ICB_INCLUDE_INCOMPLETE) < 0)
+ goto overflow;
+ }
+ if (add_null) {
+ if (outbuf.len == outbuf.size)
+ goto overflow;
+ outbuf.buf[outbuf.len++] = '\0';
+ }
+ msg_bytes = outbuf.len;
+ } else
+#endif
+ read_loop(fd, line, msg_bytes);
/* A directory name was sent with the trailing null */
if (msg_bytes > 0 && !line[msg_bytes-1])
log_delete(line, S_IFDIR);
break;
case MSG_SUCCESS:
if (msg_bytes != 4) {
+ invalid_msg:
rprintf(FERROR, "invalid multi-message %d:%ld [%s]\n",
tag, (long)msg_bytes, who_am_i());
exit_cleanup(RERR_STREAMIO);
read_loop(fd, line, msg_bytes);
successful_send(IVAL(line, 0));
break;
+ case MSG_NO_SEND:
+ if (msg_bytes != 4)
+ goto invalid_msg;
+ read_loop(fd, line, msg_bytes);
+ send_msg_int(MSG_NO_SEND, IVAL(line, 0));
+ break;
case MSG_INFO:
case MSG_ERROR:
+ case MSG_ERROR_XFER:
+ case MSG_WARNING:
if (msg_bytes >= sizeof line) {
overflow:
rprintf(FERROR,
exit_cleanup(RERR_STREAMIO);
}
read_loop(fd, line, msg_bytes);
- rwrite((enum logcode)tag, line, msg_bytes);
+ rwrite((enum logcode)tag, line, msg_bytes, 1);
+ if (first_message) {
+ if (list_only && !am_sender && tag == 1) {
+ line[msg_bytes] = '\0';
+ check_for_d_option_error(line);
+ }
+ first_message = 0;
+ }
break;
default:
rprintf(FERROR, "unexpected tag %d [%s]\n",
}
}
- if (remaining == 0)
+ if (iobuf_in_remaining == 0)
io_flush(NORMAL_FLUSH);
return cnt;
}
-/**
- * Do a buffered read from @p fd. Don't return until all @p n bytes
- * have been read. If all @p n can't be read then exit with an
- * error.
- **/
+/* Do a buffered read from fd. Don't return until all N bytes have
+ * been read. If all N can't be read then exit with an error. */
static void readfd(int fd, char *buffer, size_t N)
{
int cnt;
exit_cleanup(RERR_FILEIO);
}
+ if (fd == flist_forward_from)
+ writefd(iobuf_f_out, buffer, total);
+
if (fd == sock_f_in)
stats.total_read += total;
}
-int read_shortint(int f)
+unsigned short read_shortint(int f)
{
- uchar b[2];
- readfd(f, (char *)b, 2);
- return (b[1] << 8) + b[0];
+ char b[2];
+ readfd(f, b, 2);
+ return (UVAL(b, 1) << 8) + UVAL(b, 0);
}
int32 read_int(int f)
char b[4];
int32 num;
- readfd(f,b,4);
- num = IVAL(b,0);
- if (num == (int32)0xffffffff)
- return -1;
+ readfd(f, b, 4);
+ num = IVAL(b, 0);
+#if SIZEOF_INT32 > 4
+ if (num & (int32)0x80000000)
+ num |= ~(int32)0xffffffff;
+#endif
return num;
}
+int32 read_varint(int f)
+{
+ union {
+ char b[5];
+ int32 x;
+ } u;
+ uchar ch;
+ int extra;
+
+ u.x = 0;
+ readfd(f, (char*)&ch, 1);
+ extra = int_byte_extra[ch / 4];
+ if (extra) {
+ uchar bit = ((uchar)1<<(8-extra));
+ if (extra >= (int)sizeof u.b) {
+ rprintf(FERROR, "Overflow in read_varint()\n");
+ exit_cleanup(RERR_STREAMIO);
+ }
+ readfd(f, u.b, extra);
+ u.b[extra] = ch & (bit-1);
+ } else
+ u.b[0] = ch;
+#if CAREFUL_ALIGNMENT
+ u.x = IVAL(u.b,0);
+#endif
+#if SIZEOF_INT32 > 4
+ if (u.x & (int32)0x80000000)
+ u.x |= ~(int32)0xffffffff;
+#endif
+ return u.x;
+}
+
+int64 read_varlong(int f, uchar min_bytes)
+{
+ union {
+ char b[9];
+ int64 x;
+ } u;
+ char b2[8];
+ int extra;
+
+#if SIZEOF_INT64 < 8
+ memset(u.b, 0, 8);
+#else
+ u.x = 0;
+#endif
+ readfd(f, b2, min_bytes);
+ memcpy(u.b, b2+1, min_bytes-1);
+ extra = int_byte_extra[CVAL(b2, 0) / 4];
+ if (extra) {
+ uchar bit = ((uchar)1<<(8-extra));
+ if (min_bytes + extra > (int)sizeof u.b) {
+ rprintf(FERROR, "Overflow in read_varlong()\n");
+ exit_cleanup(RERR_STREAMIO);
+ }
+ readfd(f, u.b + min_bytes - 1, extra);
+ u.b[min_bytes + extra - 1] = CVAL(b2, 0) & (bit-1);
+#if SIZEOF_INT64 < 8
+ if (min_bytes + extra > 5 || u.b[4] || CVAL(u.b,3) & 0x80) {
+ rprintf(FERROR, "Integer overflow: attempted 64-bit offset\n");
+ exit_cleanup(RERR_UNSUPPORTED);
+ }
+#endif
+ } else
+ u.b[min_bytes + extra - 1] = CVAL(b2, 0);
+#if SIZEOF_INT64 < 8
+ u.x = IVAL(u.b,0);
+#elif CAREFUL_ALIGNMENT
+ u.x = IVAL(u.b,0) | (((int64)IVAL(u.b,4))<<32);
+#endif
+ return u.x;
+}
+
int64 read_longint(int f)
{
- int64 num;
- char b[8];
- num = read_int(f);
+#if SIZEOF_INT64 >= 8
+ char b[9];
+#endif
+ int32 num = read_int(f);
- if ((int32)num != (int32)0xffffffff)
+ if (num != (int32)0xffffffff)
return num;
#if SIZEOF_INT64 < 8
rprintf(FERROR, "Integer overflow: attempted 64-bit offset\n");
exit_cleanup(RERR_UNSUPPORTED);
#else
- readfd(f,b,8);
- num = IVAL(b,0) | (((int64)IVAL(b,4))<<32);
+ readfd(f, b, 8);
+ return IVAL(b,0) | (((int64)IVAL(b,4))<<32);
#endif
-
- return num;
}
-void read_buf(int f,char *buf,size_t len)
+void read_buf(int f, char *buf, size_t len)
{
readfd(f,buf,len);
}
-void read_sbuf(int f,char *buf,size_t len)
+void read_sbuf(int f, char *buf, size_t len)
{
readfd(f, buf, len);
buf[len] = '\0';
* called by both the sender and the receiver. */
void read_sum_head(int f, struct sum_struct *sum)
{
+ int32 max_blength = protocol_version < 30 ? OLD_MAX_BLOCK_SIZE : MAX_BLOCK_SIZE;
sum->count = read_int(f);
if (sum->count < 0) {
rprintf(FERROR, "Invalid checksum count %ld [%s]\n",
exit_cleanup(RERR_PROTOCOL);
}
sum->blength = read_int(f);
- if (sum->blength < 0 || sum->blength > MAX_BLOCK_SIZE) {
+ if (sum->blength < 0 || sum->blength > max_blength) {
rprintf(FERROR, "Invalid block length %ld [%s]\n",
(long)sum->blength, who_am_i());
exit_cleanup(RERR_PROTOCOL);
}
sum->s2length = protocol_version < 27 ? csum_length : (int)read_int(f);
- if (sum->s2length < 0 || sum->s2length > MD4_SUM_LENGTH) {
+ if (sum->s2length < 0 || sum->s2length > MAX_DIGEST_LEN) {
rprintf(FERROR, "Invalid checksum length %d [%s]\n",
sum->s2length, who_am_i());
exit_cleanup(RERR_PROTOCOL);
*
* This function underlies the multiplexing system. The body of the
* application never calls this function directly. */
-static void writefd_unbuffered(int fd,char *buf,size_t len)
+static void writefd_unbuffered(int fd, const char *buf, size_t len)
{
size_t n, total = 0;
- fd_set w_fds, r_fds;
+ fd_set w_fds, r_fds, e_fds;
int maxfd, count, cnt, using_r_fds;
- int defer_save = defer_forwarding_messages;
+ int defer_inc = 0;
struct timeval tv;
- no_flush++;
+ if (no_flush++)
+ defer_forwarding_messages++, defer_inc++;
while (total < len) {
FD_ZERO(&w_fds);
- FD_SET(fd,&w_fds);
+ FD_SET(fd, &w_fds);
+ FD_ZERO(&e_fds);
+ FD_SET(fd, &e_fds);
maxfd = fd;
if (msg_fd_in >= 0) {
FD_ZERO(&r_fds);
- FD_SET(msg_fd_in,&r_fds);
+ FD_SET(msg_fd_in, &r_fds);
if (msg_fd_in > maxfd)
maxfd = msg_fd_in;
using_r_fds = 1;
errno = 0;
count = select(maxfd + 1, using_r_fds ? &r_fds : NULL,
- &w_fds, NULL, &tv);
+ &w_fds, &e_fds, &tv);
if (count <= 0) {
if (count < 0 && errno == EBADF)
continue;
}
+ /*if (FD_ISSET(fd, &e_fds))
+ rprintf(FINFO, "select exception on fd %d\n", fd); */
+
if (using_r_fds && FD_ISSET(msg_fd_in, &r_fds))
read_msg_fd();
/* Don't try to write errors back across the stream. */
if (fd == sock_f_out)
- close_multiplexing_out();
+ io_end_multiplex_out();
+ /* Don't try to write errors down a failing msg pipe. */
+ if (am_server && fd == msg_fd_out)
+ exit_cleanup(RERR_STREAMIO);
rsyserr(FERROR, errno,
"writefd_unbuffered failed to write %ld bytes [%s]",
(long)len, who_am_i());
/* If the other side is sending us error messages, try
* to grab any messages they sent before they died. */
- while (fd == sock_f_out && io_multiplexing_in) {
+ while (!am_server && fd == sock_f_out && io_multiplexing_in) {
+ char buf[1024];
set_io_timeout(30);
ignore_timeout = 0;
- readfd_unbuffered(sock_f_in, io_filesfrom_buf,
- sizeof io_filesfrom_buf);
+ readfd_unbuffered(sock_f_in, buf, sizeof buf);
}
exit_cleanup(RERR_STREAMIO);
}
total += cnt;
- defer_forwarding_messages = 1;
+ defer_forwarding_messages++, defer_inc++;
if (fd == sock_f_out) {
if (io_timeout || am_generator)
}
}
- defer_forwarding_messages = defer_save;
no_flush--;
+ if (keep_defer_forwarding)
+ defer_inc--;
+ if (!(defer_forwarding_messages -= defer_inc) && !no_flush)
+ msg_flush();
}
-static void msg2sndr_flush(void)
-{
- if (defer_forwarding_messages)
- return;
-
- while (msg2sndr.head && io_multiplexing_out) {
- struct msg_list_item *m = msg2sndr.head;
- if (!(msg2sndr.head = m->next))
- msg2sndr.tail = NULL;
- stats.total_written += m->len;
- defer_forwarding_messages = 1;
- writefd_unbuffered(sock_f_out, m->buf, m->len);
- defer_forwarding_messages = 0;
- free(m);
- }
-}
-
-/**
- * Write an message to a multiplexed stream. If this fails then rsync
- * exits.
- **/
-static void mplex_write(enum msgcode code, char *buf, size_t len)
+int io_flush(int flush_it_all)
{
- char buffer[1024];
- size_t n = len;
-
- SIVAL(buffer, 0, ((MPLEX_BASE + (int)code)<<24) + len);
-
- if (n > sizeof buffer - 4)
- n = 0;
- else
- memcpy(buffer + 4, buf, n);
-
- writefd_unbuffered(sock_f_out, buffer, n+4);
+ int flushed_something = 0;
- len -= n;
- buf += n;
+ if (no_flush)
+ return 0;
- if (len) {
- defer_forwarding_messages = 1;
- writefd_unbuffered(sock_f_out, buf, len);
- defer_forwarding_messages = 0;
- msg2sndr_flush();
+ if (iobuf_out_cnt) {
+ if (io_multiplexing_out)
+ mplex_write(sock_f_out, MSG_DATA, iobuf_out, iobuf_out_cnt, 0);
+ else
+ writefd_unbuffered(iobuf_f_out, iobuf_out, iobuf_out_cnt);
+ iobuf_out_cnt = 0;
+ flushed_something = 1;
}
-}
-void io_flush(int flush_it_all)
-{
- msg2genr_flush(flush_it_all);
- msg2sndr_flush();
-
- if (!iobuf_out_cnt || no_flush)
- return;
+ if (flush_it_all && !defer_forwarding_messages && msg_queue.head) {
+ msg_flush();
+ flushed_something = 1;
+ }
- if (io_multiplexing_out)
- mplex_write(MSG_DATA, iobuf_out, iobuf_out_cnt);
- else
- writefd_unbuffered(sock_f_out, iobuf_out, iobuf_out_cnt);
- iobuf_out_cnt = 0;
+ return flushed_something;
}
-static void writefd(int fd,char *buf,size_t len)
+static void writefd(int fd, const char *buf, size_t len)
{
- if (fd == msg_fd_out) {
- rprintf(FERROR, "Internal error: wrong write used in receiver.\n");
- exit_cleanup(RERR_PROTOCOL);
- }
-
if (fd == sock_f_out)
stats.total_written += len;
exit_cleanup(RERR_FILEIO);
}
- if (!iobuf_out || fd != sock_f_out) {
+ if (!iobuf_out || fd != iobuf_f_out) {
writefd_unbuffered(fd, buf, len);
return;
}
}
}
-void write_shortint(int f, int x)
+void write_shortint(int f, unsigned short x)
{
- uchar b[2];
- b[0] = x;
- b[1] = x >> 8;
- writefd(f, (char *)b, 2);
+ char b[2];
+ b[0] = (char)x;
+ b[1] = (char)(x >> 8);
+ writefd(f, b, 2);
}
-void write_int(int f,int32 x)
+void write_int(int f, int32 x)
{
char b[4];
- SIVAL(b,0,x);
- writefd(f,b,4);
+ SIVAL(b, 0, x);
+ writefd(f, b, 4);
+}
+
+void write_varint(int f, int32 x)
+{
+ char b[5];
+ uchar bit;
+ int cnt = 4;
+
+ SIVAL(b, 1, x);
+
+ while (cnt > 1 && b[cnt] == 0)
+ cnt--;
+ bit = ((uchar)1<<(7-cnt+1));
+ if (CVAL(b, cnt) >= bit) {
+ cnt++;
+ *b = ~(bit-1);
+ } else if (cnt > 1)
+ *b = b[cnt] | ~(bit*2-1);
+ else
+ *b = b[cnt];
+
+ writefd(f, b, cnt);
+}
+
+void write_varlong(int f, int64 x, uchar min_bytes)
+{
+ char b[9];
+ uchar bit;
+ int cnt = 8;
+
+ SIVAL(b, 1, x);
+#if SIZEOF_INT64 >= 8
+ SIVAL(b, 5, x >> 32);
+#else
+ if (x <= 0x7FFFFFFF && x >= 0)
+ memset(b + 5, 0, 4);
+ else {
+ rprintf(FERROR, "Integer overflow: attempted 64-bit offset\n");
+ exit_cleanup(RERR_UNSUPPORTED);
+ }
+#endif
+
+ while (cnt > min_bytes && b[cnt] == 0)
+ cnt--;
+ bit = ((uchar)1<<(7-cnt+min_bytes));
+ if (CVAL(b, cnt) >= bit) {
+ cnt++;
+ *b = ~(bit-1);
+ } else if (cnt > min_bytes)
+ *b = b[cnt] | ~(bit*2-1);
+ else
+ *b = b[cnt];
+
+ writefd(f, b, cnt);
}
/*
*/
void write_longint(int f, int64 x)
{
- char b[8];
+ char b[12], * const s = b+4;
- if (x <= 0x7FFFFFFF) {
- write_int(f, (int)x);
+ SIVAL(s, 0, x);
+ if (x <= 0x7FFFFFFF && x >= 0) {
+ writefd(f, s, 4);
return;
}
rprintf(FERROR, "Integer overflow: attempted 64-bit offset\n");
exit_cleanup(RERR_UNSUPPORTED);
#else
- write_int(f, (int32)0xFFFFFFFF);
- SIVAL(b,0,(x&0xFFFFFFFF));
- SIVAL(b,4,((x>>32)&0xFFFFFFFF));
-
- writefd(f,b,8);
+ memset(b, 0xFF, 4);
+ SIVAL(s, 4, x >> 32);
+ writefd(f, b, 12);
#endif
}
-void write_buf(int f,char *buf,size_t len)
+void write_buf(int f, const char *buf, size_t len)
{
writefd(f,buf,len);
}
/** Write a string to the connection */
-void write_sbuf(int f, char *buf)
+void write_sbuf(int f, const char *buf)
{
writefd(f, buf, strlen(buf));
}
writefd(f, (char *)&c, 1);
}
-void write_vstring(int f, char *str, int len)
+void write_vstring(int f, const char *str, int len)
{
uchar lenbuf[3], *lb = lenbuf;
writefd(f, str, len);
}
-/**
- * Read a line of up to @p maxlen characters into @p buf (not counting
- * the trailing null). Strips the (required) trailing newline and all
- * carriage returns.
- *
- * @return 1 for success; 0 for I/O error or truncation.
- **/
-int read_line(int f, char *buf, size_t maxlen)
+/* Send a file-list index using a byte-reduction method. */
+void write_ndx(int f, int32 ndx)
{
- while (maxlen) {
+ static int32 prev_positive = -1, prev_negative = 1;
+ int32 diff, cnt = 0;
+ char b[6];
+
+ if (protocol_version < 30 || read_batch) {
+ write_int(f, ndx);
+ return;
+ }
+
+ /* Send NDX_DONE as a single-byte 0 with no side effects. Send
+ * negative nums as a positive after sending a leading 0xFF. */
+ if (ndx >= 0) {
+ diff = ndx - prev_positive;
+ prev_positive = ndx;
+ } else if (ndx == NDX_DONE) {
+ *b = 0;
+ writefd(f, b, 1);
+ return;
+ } else {
+ b[cnt++] = (char)0xFF;
+ ndx = -ndx;
+ diff = ndx - prev_negative;
+ prev_negative = ndx;
+ }
+
+ /* A diff of 1 - 253 is sent as a one-byte diff; a diff of 254 - 32767
+ * or 0 is sent as a 0xFE + a two-byte diff; otherwise we send 0xFE
+ * & all 4 bytes of the (non-negative) num with the high-bit set. */
+ if (diff < 0xFE && diff > 0)
+ b[cnt++] = (char)diff;
+ else if (diff < 0 || diff > 0x7FFF) {
+ b[cnt++] = (char)0xFE;
+ b[cnt++] = (char)((ndx >> 24) | 0x80);
+ b[cnt++] = (char)ndx;
+ b[cnt++] = (char)(ndx >> 8);
+ b[cnt++] = (char)(ndx >> 16);
+ } else {
+ b[cnt++] = (char)0xFE;
+ b[cnt++] = (char)(diff >> 8);
+ b[cnt++] = (char)diff;
+ }
+ writefd(f, b, cnt);
+}
+
+/* Receive a file-list index using a byte-reduction method. */
+int32 read_ndx(int f)
+{
+ static int32 prev_positive = -1, prev_negative = 1;
+ int32 *prev_ptr, num;
+ char b[4];
+
+ if (protocol_version < 30)
+ return read_int(f);
+
+ readfd(f, b, 1);
+ if (CVAL(b, 0) == 0xFF) {
+ readfd(f, b, 1);
+ prev_ptr = &prev_negative;
+ } else if (CVAL(b, 0) == 0)
+ return NDX_DONE;
+ else
+ prev_ptr = &prev_positive;
+ if (CVAL(b, 0) == 0xFE) {
+ readfd(f, b, 2);
+ if (CVAL(b, 0) & 0x80) {
+ b[3] = CVAL(b, 0) & ~0x80;
+ b[0] = b[1];
+ readfd(f, b+1, 2);
+ num = IVAL(b, 0);
+ } else
+ num = (UVAL(b,0)<<8) + UVAL(b,1) + *prev_ptr;
+ } else
+ num = UVAL(b, 0) + *prev_ptr;
+ *prev_ptr = num;
+ if (prev_ptr == &prev_negative)
+ num = -num;
+ return num;
+}
+
+/* Read a line of up to bufsiz-1 characters into buf. Strips
+ * the (required) trailing newline and all carriage returns.
+ * Returns 1 for success; 0 for I/O error or truncation. */
+int read_line_old(int f, char *buf, size_t bufsiz)
+{
+ bufsiz--; /* leave room for the null */
+ while (bufsiz > 0) {
buf[0] = 0;
read_buf(f, buf, 1);
if (buf[0] == 0)
break;
if (buf[0] != '\r') {
buf++;
- maxlen--;
+ bufsiz--;
}
}
*buf = '\0';
- return maxlen > 0;
+ return bufsiz > 0;
}
void io_printf(int fd, const char *format, ...)
void io_start_multiplex_out(void)
{
io_flush(NORMAL_FLUSH);
- io_start_buffering_out();
+ io_start_buffering_out(sock_f_out);
io_multiplexing_out = 1;
}
void io_start_multiplex_in(void)
{
io_flush(NORMAL_FLUSH);
- io_start_buffering_in();
+ io_start_buffering_in(sock_f_in);
io_multiplexing_in = 1;
}
/** Write an message to the multiplexed data stream. */
-int io_multiplex_write(enum msgcode code, char *buf, size_t len)
+int io_multiplex_write(enum msgcode code, const char *buf, size_t len, int convert)
{
if (!io_multiplexing_out)
return 0;
-
io_flush(NORMAL_FLUSH);
stats.total_written += (len+4);
- mplex_write(code, buf, len);
+ mplex_write(sock_f_out, code, buf, len, convert);
return 1;
}
-void close_multiplexing_in(void)
+void io_end_multiplex_in(void)
{
io_multiplexing_in = 0;
+ io_end_buffering_in();
}
/** Stop output multiplexing. */
-void close_multiplexing_out(void)
+void io_end_multiplex_out(void)
{
io_multiplexing_out = 0;
+ io_end_buffering_out();
}
void start_write_batch(int fd)
{
- write_stream_flags(batch_fd);
-
/* Some communication has already taken place, but we don't
* enable batch writing until here so that we can write a
* canonical record of the communication even though the
* actual communication so far depends on whether a daemon
* is involved. */
write_int(batch_fd, protocol_version);
+ if (protocol_version >= 30)
+ write_byte(batch_fd, inc_recurse);
write_int(batch_fd, checksum_seed);
if (am_sender)
Matt McCutchen's Web Site / rsync / rsync.git / blobdiff