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update.c
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update.c
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/*
* csync2 - cluster synchronization tool, 2nd generation
* Copyright (C) 2004 - 2015 LINBIT Information Technologies GmbH
* http:https://www.linbit.com; see also AUTHORS
*
* 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
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* 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
*/
#include "csync2.h"
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <netdb.h>
#include <fnmatch.h>
#include <stdarg.h>
#include <signal.h>
static int connection_closed_error = 1;
enum connection_response read_conn_status(const char *file, const char *host)
{
char line[4096];
enum connection_response conn_status;
if ( conn_gets(line, sizeof(line)) ) {
conn_status = conn_response_to_enum(line);
if (!is_ok_response(conn_status))
csync_error_count++;
} else {
csync_error_count++;
connection_closed_error = 1;
sprintf(line, "%s\n", conn_response(CR_ERR_CONN_CLOSED));
conn_status = CR_ERR_CONN_CLOSED;
}
if ( file )
csync_debug(2, "While syncing file %s:\n", file);
else
file = "<no file>";
csync_debug(3, "response from peer(%s): %s [%u] <- %s", file, host, conn_status, line);
return conn_status;
}
int connect_to_host(const char *peername)
{
int use_ssl = 1;
struct csync_nossl *t;
connection_closed_error = 0;
for (t = csync_nossl; t; t=t->next) {
if ( !fnmatch(t->pattern_from, myhostname, 0) &&
!fnmatch(t->pattern_to, peername, 0) ) {
use_ssl = 0;
break;
}
}
csync_debug(1, "Connecting to host %s (%s) ...\n",
peername, use_ssl ? "SSL" : "PLAIN");
if ( conn_open(peername) ) return -1;
if ( use_ssl ) {
#if HAVE_LIBGNUTLS
conn_printf("SSL\n");
if ( read_conn_status(0, peername) != CR_OK_ACTIVATING_SSL ) {
csync_debug(1, "SSL command failed.\n");
conn_close();
return -1;
}
conn_activate_ssl(0);
conn_check_peer_cert(peername, 1);
#else
csync_debug(0, "ERROR: Config request SSL but this csync2 is built without SSL support.\n");
csync_error_count++;
return -1;
#endif
}
conn_printf("CONFIG %s\n", url_encode(cfgname));
if (!is_ok_response(read_conn_status(NULL, peername))) {
csync_debug(1, "Config command failed.\n");
conn_close();
return -1;
}
if (active_grouplist) {
conn_printf("GROUP %s\n", url_encode(active_grouplist));
if (!is_ok_response(read_conn_status(NULL, peername))) {
csync_debug(1, "Group command failed.\n");
conn_close();
return -1;
}
}
return 0;
}
static int get_auto_method(const char *peername, const char *filename)
{
const struct csync_group *g = 0;
const struct csync_group_host *h;
while ( (g=csync_find_next(g, filename)) ) {
for (h = g->host; h; h = h->next) {
if (!strcmp(h->hostname, peername)) {
if (g->auto_method == CSYNC_AUTO_METHOD_LEFT && h->on_left_side)
return CSYNC_AUTO_METHOD_LEFT_RIGHT_LOST;
if (g->auto_method == CSYNC_AUTO_METHOD_RIGHT && !h->on_left_side)
return CSYNC_AUTO_METHOD_LEFT_RIGHT_LOST;
return g->auto_method;
}
}
}
return CSYNC_AUTO_METHOD_NONE;
}
static int get_master_slave_status(const char *peername, const char *filename)
{
const struct csync_group *g = 0;
const struct csync_group_host *h;
while ( (g=csync_find_next(g, filename)) ) {
if (g->local_slave)
continue;
for (h = g->host; h; h = h->next) {
if (h->slave && !strcmp(h->hostname, peername))
return 1;
}
}
return 0;
}
void csync_update_file_del(const char *peername,
const char *filename, int force, int dry_run)
{
enum connection_response last_conn_status;
int auto_resolve_run = 0;
const char *key = csync_key(peername, filename);
if ( !key ) {
csync_debug(2, "Skipping deletion %s on %s - not in my groups.\n", filename, peername);
return;
}
auto_resolve_entry_point:
csync_debug(1, "Deleting %s on %s ...\n", filename, peername);
if ( force ) {
if ( dry_run ) {
printf("!D: %-15s %s\n", peername, filename);
return;
}
conn_printf("FLUSH %s %s\n", url_encode(key), url_encode(filename));
last_conn_status = read_conn_status(filename, peername);
if (!is_ok_response(last_conn_status))
goto got_error;
} else {
static char chk1[4 * 4096];
const char *chk2 = "---";
int i, found_diff = 0;
int rs_check_result;
conn_printf("SIG %s %s\n",
url_encode(key), url_encode(filename));
last_conn_status = read_conn_status(filename, peername);
if (last_conn_status == CR_ERR_PARENT_DIR_MISSING) {
/* In this case, this is not really an error. */
--csync_error_count;
goto already_gone;
}
if (!is_ok_response(last_conn_status))
goto got_error;
if ( !conn_gets(chk1, sizeof(chk1)) ) goto got_error;
for (i=0; chk1[i] && chk1[i] != '\n' && chk2[i]; i++)
if ( chk1[i] != chk2[i] ) {
csync_debug(2, "File is different on peer (cktxt char #%d).\n", i);
csync_debug(2, ">>> PEER: %s>>> LOCAL: %s\n", chk1, chk2);
found_diff=1;
break;
}
rs_check_result = csync_rs_check(filename, 0);
if ( rs_check_result < 0 )
goto got_error;
if ( rs_check_result ) {
csync_debug(2, "File is different on peer (rsync sig).\n");
found_diff=1;
}
if (!is_ok_response(read_conn_status(filename, peername))) goto got_error;
if ( !found_diff ) {
already_gone:
csync_debug(1, "File is already up to date on peer.\n");
if ( dry_run ) {
printf("?S: %-15s %s\n", peername, filename);
// DS Remove local dirty, even in dry run
// return;
}
goto skip_action;
}
if ( dry_run ) {
printf("?D: %-15s %s\n", peername, filename);
return;
}
}
conn_printf("DEL %s %s\n",
url_encode(key), url_encode(filename));
last_conn_status = read_conn_status(filename, peername);
/* FIXME be more specific?
* (last_conn_status == CR_ERR_ALSO_DIRTY_HERE) ?? */
if (!is_ok_response(last_conn_status))
goto maybe_auto_resolve;
skip_action:
SQL("Remove dirty-file entry.",
"DELETE FROM dirty WHERE filename = '%s' "
"AND peername = '%s'", url_encode(filename),
url_encode(peername));
if (auto_resolve_run)
csync_error_count--;
return;
maybe_auto_resolve:
if (!auto_resolve_run && (last_conn_status == CR_ERR_ALSO_DIRTY_HERE ) )
{
csync_debug(0,"auto resolving... response = %d",last_conn_status);
if (get_master_slave_status(peername, filename)) {
csync_debug(0, "Auto-resolving conflict: Won 'master/slave' test.\n");
auto_resolve_run = 1;
} else {
int auto_method = get_auto_method(peername, filename);
switch (auto_method)
{
case CSYNC_AUTO_METHOD_FIRST:
auto_resolve_run = 1;
csync_debug(0, "Auto-resolving conflict: Won 'first' test.\n");
break;
case CSYNC_AUTO_METHOD_LEFT:
case CSYNC_AUTO_METHOD_RIGHT:
auto_resolve_run = 1;
csync_debug(0, "Auto-resolving conflict: Won 'left/right' test.\n");
break;
case CSYNC_AUTO_METHOD_LEFT_RIGHT_LOST:
csync_debug(0, "Do not auto-resolve conflict: Lost 'left/right' test.\n");
break;
case CSYNC_AUTO_METHOD_YOUNGER:
case CSYNC_AUTO_METHOD_OLDER:
case CSYNC_AUTO_METHOD_BIGGER:
case CSYNC_AUTO_METHOD_SMALLER:
csync_debug(0, "Do not auto-resolve conflict: This is a removal.\n");
break;
}
}
if (auto_resolve_run) {
force = 1;
goto auto_resolve_entry_point;
}
}
got_error:
if (auto_resolve_run)
csync_debug(0, "ERROR: Auto-resolving failed. Giving up.\n");
csync_debug(1, "File stays in dirty state. Try again later...\n");
}
enum connection_response csync_update_file_mod(const char *peername,
const char *filename, int force, int dry_run)
{
struct stat st;
enum connection_response last_conn_status = CR_ERROR;
int auto_resolve_run = 0;
const char *key = csync_key(peername, filename);
if ( !key ) {
csync_debug(2, "Skipping file update %s on %s - not in my groups.\n", filename, peername);
return CR_ERROR;
}
auto_resolve_entry_point:
csync_debug(1, "Updating %s on %s ...\n", filename, peername);
if ( lstat_strict(prefixsubst(filename), &st) != 0 ) {
csync_debug(0, "ERROR: Cant stat %s.\n", filename);
csync_error_count++;
goto got_error;
}
if ( force ) {
if ( dry_run ) {
printf("!M: %-15s %s\n", peername, filename);
return CR_OK;
}
conn_printf("FLUSH %s %s\n",
url_encode(key), url_encode(filename));
last_conn_status = read_conn_status(filename, peername);
if (!is_ok_response(last_conn_status))
goto got_error;
} else {
static char chk1[4 * 4096];
const char *chk2;
int i, found_diff = 0;
int rs_check_result;
conn_printf("SIG %s %s\n",
url_encode(key), url_encode(filename));
last_conn_status = read_conn_status(filename, peername);
if (!is_ok_response(last_conn_status)) {
csync_debug(3, "error from peer\n");
goto got_error;
}
if ( !conn_gets(chk1, sizeof(chk1)) ) goto got_error;
chk2 = csync_genchecktxt(&st, filename, 1);
for (i=0; chk1[i] && chk1[i] != '\n' && chk2[i]; i++)
if ( chk1[i] != chk2[i] ) {
csync_debug(2, "File %s is different on peer (cktxt char #%d).\n",filename, i);
csync_debug(2, ">>> PEER: %s>>> LOCAL: %s\n", chk1, chk2);
found_diff=1;
break;
}
rs_check_result = csync_rs_check(filename, S_ISREG(st.st_mode));
if ( rs_check_result < 0 )
goto got_error;
if ( rs_check_result ) {
csync_debug(2, "File is different on peer (rsync sig).\n");
found_diff=1;
}
last_conn_status = read_conn_status(filename, peername);
if (!is_ok_response(last_conn_status))
goto got_error;
if ( !found_diff ) {
csync_debug(1, "File is already up to date on peer.\n");
if ( dry_run ) {
printf("?S: %-15s %s\n", peername, filename);
// DS also skip on dry_run
// return;
}
goto skip_action;
}
if ( dry_run ) {
printf("?M: %-15s %s\n", peername, filename);
return last_conn_status;
}
}
if ( S_ISREG(st.st_mode) ) {
conn_printf("PATCH %s %s\n",
url_encode(key), url_encode(filename));
last_conn_status = read_conn_status(filename, peername);
/* FIXME be more specific?
* (last_conn_status != CR_OK_SEND_DATA) ??
* (last_conn_status == CR_ERR_ALSO_DIRTY_HERE) ?? */
if (!is_ok_response(last_conn_status))
goto maybe_auto_resolve;
if ( csync_rs_delta(filename) ) {
//why is the response ignored?
last_conn_status = read_conn_status(filename, peername);
goto got_error;
}
last_conn_status = read_conn_status(filename, peername);
if (!is_ok_response(last_conn_status))
goto got_error;
} else
if ( S_ISDIR(st.st_mode) ) {
conn_printf("MKDIR %s %s\n",
url_encode(key), url_encode(filename));
last_conn_status = read_conn_status(filename, peername);
if (!is_ok_response(last_conn_status))
goto maybe_auto_resolve;
} else
if ( S_ISCHR(st.st_mode) ) {
conn_printf("MKCHR %s %s\n",
url_encode(key), url_encode(filename));
last_conn_status = read_conn_status(filename, peername);
if (!is_ok_response(last_conn_status))
goto maybe_auto_resolve;
} else
if ( S_ISBLK(st.st_mode) ) {
conn_printf("MKBLK %s %s\n",
url_encode(key), url_encode(filename));
last_conn_status = read_conn_status(filename, peername);
if (!is_ok_response(last_conn_status))
goto maybe_auto_resolve;
} else
if ( S_ISFIFO(st.st_mode) ) {
conn_printf("MKFIFO %s %s\n",
url_encode(key), url_encode(filename));
last_conn_status = read_conn_status(filename, peername);
if (!is_ok_response(last_conn_status))
goto maybe_auto_resolve;
} else
if ( S_ISLNK(st.st_mode) ) {
char target[1024];
int rc;
rc = readlink(prefixsubst(filename), target, 1023);
if ( rc >= 0 ) {
target[rc]=0;
conn_printf("MKLINK %s %s %s\n",
url_encode(key), url_encode(filename),
url_encode(target));
last_conn_status = read_conn_status(filename, peername);
if (!is_ok_response(last_conn_status))
goto maybe_auto_resolve;
} else {
csync_debug(1, "File is a symlink but radlink() failed.\n", st.st_mode);
goto got_error;
}
} else
if ( S_ISSOCK(st.st_mode) ) {
conn_printf("MKSOCK %s %s\n",
url_encode(key), url_encode(filename));
last_conn_status = read_conn_status(filename, peername);
if (!is_ok_response(last_conn_status))
goto maybe_auto_resolve;
} else {
csync_debug(1, "File type (mode=%o) is not supported.\n", st.st_mode);
goto got_error;
}
conn_printf("SETOWN %s %s %d %d\n",
url_encode(key), url_encode(filename),
st.st_uid, st.st_gid);
last_conn_status = read_conn_status(filename, peername);
if (!is_ok_response(last_conn_status))
goto got_error;
if ( !S_ISLNK(st.st_mode) ) {
conn_printf("SETMOD %s %s %d\n", url_encode(key),
url_encode(filename), st.st_mode);
last_conn_status = read_conn_status(filename, peername);
if (!is_ok_response(last_conn_status))
goto got_error;
}
skip_action:
if ( !S_ISLNK(st.st_mode) ) {
conn_printf("SETIME %s %s %lld\n",
url_encode(key), url_encode(filename),
(long long)st.st_mtime);
last_conn_status = read_conn_status(filename, peername);
if (!is_ok_response(last_conn_status))
goto got_error;
}
SQL("Remove dirty-file entry.",
"DELETE FROM dirty WHERE filename = '%s' "
"AND peername = '%s'", url_encode(filename),
url_encode(peername));
if (auto_resolve_run)
csync_error_count--;
return last_conn_status;
maybe_auto_resolve:
if (!auto_resolve_run && (last_conn_status == CR_ERR_ALSO_DIRTY_HERE))
{
if (get_master_slave_status(peername, filename)) {
csync_debug(0, "Auto-resolving conflict: Won 'master/slave' test.\n");
auto_resolve_run = 1;
} else {
int auto_method = get_auto_method(peername, filename);
switch (auto_method)
{
case CSYNC_AUTO_METHOD_FIRST:
auto_resolve_run = 1;
csync_debug(0, "Auto-resolving conflict: Won 'first' test.\n");
break;
case CSYNC_AUTO_METHOD_LEFT:
case CSYNC_AUTO_METHOD_RIGHT:
auto_resolve_run = 1;
csync_debug(0, "Auto-resolving conflict: Won 'left/right' test.\n");
break;
case CSYNC_AUTO_METHOD_LEFT_RIGHT_LOST:
csync_debug(0, "Do not auto-resolve conflict: Lost 'left/right' test.\n");
break;
case CSYNC_AUTO_METHOD_YOUNGER:
case CSYNC_AUTO_METHOD_OLDER:
case CSYNC_AUTO_METHOD_BIGGER:
case CSYNC_AUTO_METHOD_SMALLER:
{
static char buffer[4 * 4096];
char *type, *cmd;
long remotedata, localdata;
struct stat sbuf;
if (auto_method == CSYNC_AUTO_METHOD_YOUNGER ||
auto_method == CSYNC_AUTO_METHOD_OLDER) {
type = "younger/older";
cmd = "GETTM";
} else {
type = "bigger/smaller";
cmd = "GETSZ";
}
conn_printf("%s %s %s\n", cmd, url_encode(key), url_encode(filename));
last_conn_status = read_conn_status(filename, peername);
if (!is_ok_response(last_conn_status))
goto got_error;
if ( !conn_gets(buffer, sizeof(buffer)) ) goto got_error_in_autoresolve;
remotedata = atol(buffer);
if (remotedata == -1)
goto remote_file_has_been_removed;
if ( lstat_strict(prefixsubst(filename), &sbuf) ) goto got_error_in_autoresolve;
if (auto_method == CSYNC_AUTO_METHOD_YOUNGER ||
auto_method == CSYNC_AUTO_METHOD_OLDER)
localdata = sbuf.st_mtime;
else
localdata = sbuf.st_size;
if ((localdata > remotedata) ==
(auto_method == CSYNC_AUTO_METHOD_YOUNGER ||
auto_method == CSYNC_AUTO_METHOD_BIGGER)) {
remote_file_has_been_removed:
auto_resolve_run = 1;
csync_debug(0, "Auto-resolving conflict: Won '%s' test.\n", type);
} else
csync_debug(0, "Do not auto-resolve conflict: Lost '%s' test.\n", type);
break;
}
}
}
if (auto_resolve_run) {
force = 1;
goto auto_resolve_entry_point;
}
}
got_error:
if (auto_resolve_run)
got_error_in_autoresolve:
csync_debug(0, "ERROR: Auto-resolving failed. Giving up.\n");
csync_debug(1, "File stays in dirty state. Try again later...\n");
return last_conn_status;
}
int compare_files(const char *filename, const char *pattern, int recursive)
{
int i;
if (!strcmp(pattern, "/")) return 1;
for (i=0; filename[i] && pattern[i]; i++)
if (filename[i] != pattern[i]) return 0;
if ( filename[i] == '/' && !pattern[i] && recursive) return 1;
if ( !filename[i] && !pattern[i]) return 1;
return 0;
}
struct textlist *csync_find_files_recursive(const char *filename)
{
const char *ue_filename = url_encode(filename);
struct textlist *tl = NULL;
struct stat sb;
/* ASCII '/' (0x2f) and '0' (0x30) happen to be
* adjacent symbols. That makes everything strictly
* sorting between file/ and file0 the subdir tree. */
SQL_BEGIN("Query File Table for missing files on the peer",
"SELECT filename FROM file WHERE filename = '%s' UNION ALL "
"SELECT filename FROM file WHERE filename > '%s/' and filename < '%s0' "
"ORDER BY filename;",
ue_filename,
ue_filename, ue_filename)
{
const char *fn = url_decode(SQL_V(0));
if (lstat_strict(prefixsubst(fn), &sb) == 0 && csync_check_pure(fn) == 0)
textlist_add(&tl, fn, 0);
} SQL_END;
return tl;
}
void csync_mark_tl(struct textlist *tl, const char *peername)
{
struct textlist *t;
for (t = tl; t != NULL; t = t->next)
csync_mark(t->value, peername, NULL);
}
struct update_context {
char *current_name;
const char *peername;
const char *ue_peername;
const char **patlist;
int patnum;
int recursive;
int dry_run;
char *missing_parent_dir;
};
enum connection_response conn_hello(struct update_context *c, struct textlist *t)
{
enum connection_response r = CR_OK;
if ( !c->current_name || strcmp(c->current_name, t->value2) ) {
csync_debug(3, "Dirty item %s %s %d\n", t->value, t->value2, t->intvalue);
conn_printf("HELLO %s\n", url_encode(t->value2));
r = read_conn_status(t->value, c->peername);
if (!is_ok_response(r))
return r;
free(c->current_name);
c->current_name = strdup(t->value2);
}
return r;
}
enum connection_response csync_update_tl_mod(struct textlist *tl_mod, struct update_context *c)
{
struct textlist *t;
char *skip_subtree;
size_t skip_subtree_len;
enum connection_response r = CR_OK;
/* If we had a missing_parent_dir before, skip ahead, to make sure we
* make progress in case we have more than one missing subtree,
* and some conflict or other error when trying to re-create them.
*/
skip_subtree = c->missing_parent_dir;
skip_subtree_len = skip_subtree ? strlen(skip_subtree) : 0;
for (t = tl_mod; t != 0; t = t->next) {
if (skip_subtree) {
int cmp = strncmp(skip_subtree, t->value, skip_subtree_len);
if (cmp > 0)
continue;
if (cmp == 0 && t->value[skip_subtree_len] == '/') {
csync_debug(3, "Skipped %s\n", t->value);
continue;
}
skip_subtree = NULL;
skip_subtree_len = 0;
}
r = conn_hello(c, t);
if (!is_ok_response(r))
return r;
if (!connection_closed_error)
r = csync_update_file_mod(c->peername, t->value, t->intvalue, c->dry_run);
if (r == CR_ERR_PARENT_DIR_MISSING) {
struct textlist *tl = NULL;
int filename_length = strlen(t->value);
char parent_dirname[filename_length];
split_dirname_basename(parent_dirname, NULL, t->value);
csync_debug(1, "missing parent dir : %s\n", parent_dirname);
if (c->missing_parent_dir
&& strcmp(c->missing_parent_dir, parent_dirname) == 0) {
/* Don't take action, if we had this same dir
* missing on a previous iteration.
* Instead skip ahead the todo list.
*/
skip_subtree = t->value;
skip_subtree_len = strlen(skip_subtree);
/* change to generic error, in case this was
* the last item on the todo list */
r = CR_ERROR;
} else {
tl = csync_find_files_recursive(parent_dirname);
csync_mark_tl(tl, c->peername);
textlist_free(tl);
free(c->missing_parent_dir);
c->missing_parent_dir = strdup(parent_dirname);
break;
}
}
}
return r;
}
struct textlist *csync_find_dirty(struct update_context *c)
{
struct textlist *tl = NULL;
SQL_BEGIN("Get files for host from dirty table",
"SELECT filename, myname, forced FROM dirty WHERE peername = '%s' "
"ORDER by filename ASC", c->ue_peername)
{
const char *filename = url_decode(SQL_V(0));
int use_this = (c->patnum == 0);
int i;
for (i=0; i < c->patnum && !use_this; i++)
if (compare_files(filename, c->patlist[i], c->recursive))
use_this = 1;
if (use_this)
textlist_add2(&tl, filename, url_decode(SQL_V(1)), atoi(SQL_V(2)));
} SQL_END;
return tl;
}
void csync_update_host_c(struct update_context *c)
{
struct textlist *tl, *t, *next_t;
struct textlist *tl_mod, **last_tn;
enum connection_response r = CR_OK;
int saved_csync_error_count = csync_error_count;
tl = csync_find_dirty(c);
tl_mod = NULL;
last_tn=&tl;
/* just return if there are no files to update */
if ( !tl ) return;
if ( connect_to_host(c->peername) ) {
csync_error_count++;
csync_debug(0, "ERROR: Connection to remote host `%s' failed.\n", c->peername);
csync_debug(1, "Host stays in dirty state. "
"Try again later...\n");
return;
}
redo:
/*
* The SQL statement above creates a linked list. Due to the
* way the linked list is created, it has the reversed order
* of the sql output. This order is good for removing stuff
* (deep entries first) but we need to use the original order
* for adding things.
*
* So I added a 2nd linked list for adding and modifying
* files: *tl_mod. Whever a file should be added/modified
* it's removed in the *tl linked list and moved to that
* other linked list.
*
*/
for (t = tl; t != 0; t = next_t) {
struct stat st;
next_t = t->next;
if ( !lstat_strict(prefixsubst(t->value), &st) != 0 && !csync_check_pure(t->value)) {
*last_tn = next_t;
t->next = tl_mod;
tl_mod = t;
} else {
r = conn_hello(c, t);
if (!is_ok_response(r))
goto ident_failed_1;
if (!connection_closed_error)
csync_update_file_del(c->peername,
t->value, t->intvalue, c->dry_run);
ident_failed_1:
last_tn=&(t->next);
}
}
r = csync_update_tl_mod(tl_mod, c);
textlist_free(tl_mod);
textlist_free(tl);
if (r == CR_ERR_PARENT_DIR_MISSING) {
csync_error_count = saved_csync_error_count;
tl = csync_find_dirty(c);
tl_mod = NULL;
last_tn=&tl;
goto redo;
}
conn_printf("BYE\n");
read_conn_status(0, c->peername);//why is response ignored?
conn_close();
}
void csync_update_host(const char *peername,
const char **patlist, int patnum, int recursive, int dry_run)
{
struct update_context c = {
.current_name = NULL,
.peername = peername,
.ue_peername = strdup(url_encode(peername)),
.patlist = patlist,
.patnum = patnum,
.recursive = recursive,
.dry_run = dry_run,
.missing_parent_dir = NULL,
};
csync_update_host_c(&c);
}
void csync_update(const char ** patlist, int patnum, int recursive, int dry_run)
{
struct textlist *tl = 0, *t;
SQL_BEGIN("Get hosts from dirty table",
"SELECT peername FROM dirty GROUP BY peername")
{
textlist_add(&tl, url_decode(SQL_V(0)), 0);
} SQL_END;
for (t = tl; t != 0; t = t->next) {
if (active_peerlist) {
int i=0, pnamelen = strlen(t->value);
while (active_peerlist[i]) {
if ( !strncasecmp(active_peerlist+i, t->value, pnamelen) &&
(active_peerlist[i+pnamelen] == ',' || !active_peerlist[i+pnamelen]) )
goto found_asactive;
while (active_peerlist[i])
if (active_peerlist[i++]==',') break;
}
continue;
}
found_asactive:
csync_update_host(t->value, patlist, patnum, recursive, dry_run);
}
textlist_free(tl);
}
int csync_diff(const char *myname, const char *peername, const char *filename)
{
FILE *p;
void *old_sigpipe_handler;
const struct csync_group *g = 0;
const struct csync_group_host *h;
char buffer[512];
size_t rc;
while ( (g=csync_find_next(g, filename)) ) {
if ( !g->myname || strcmp(g->myname, myname) ) continue;
for (h = g->host; h; h = h->next)
if (!strcmp(h->hostname, peername)) {
goto found_host_check;
}
}
csync_debug(0, "Host pair + file not found in configuration.\n");
csync_error_count++;
return 0;
found_host_check:
if ( connect_to_host(peername) ) {
csync_error_count++;
csync_debug(0, "ERROR: Connection to remote host `%s' failed.\n", peername);
return 0;
}
conn_printf("HELLO %s\n", myname);
if (!is_ok_response(read_conn_status(NULL, peername)))
goto finish;
conn_printf("TYPE %s %s\n", url_encode(g->key), url_encode(filename));
if (!is_ok_response(read_conn_status(NULL, peername)))
goto finish;
/* FIXME
* verify type of file first!
* (symlink vs. file vs. dir vs. whatever)
*/
/* avoid unwanted side effects due to special chars in filenames,
* pass them in the environment */
snprintf(buffer,512,"%s:%s",myname,filename);
setenv("my_label",buffer,1);
snprintf(buffer,512,"%s:%s",peername,filename);
setenv("peer_label",buffer,1);
snprintf(buffer,512,"%s",prefixsubst(filename));
setenv("diff_file",buffer,1);
/* XXX no error check on setenv
* (could be insufficient space in environment) */
snprintf(buffer, 512, "diff -Nus --label \"$peer_label\" - --label \"$my_label\" \"$diff_file\"");
old_sigpipe_handler = signal(SIGPIPE, SIG_IGN);
p = popen(buffer, "w");
while ( (rc=conn_read(buffer, 512)) > 0
&& fwrite(buffer, 1, rc, p) == rc)
;
fclose(p);
signal(SIGPIPE, old_sigpipe_handler);
if (rc > 0)
fprintf(stdout, "*** output to diff truncated\n");
finish:
conn_close();
return 0;
}
int csync_insynctest_readline(char **file, char **checktxt)
{
char inbuf[2048], *tmp;
if (*file) free(*file);
if (*checktxt) free(*checktxt);
*file = *checktxt = 0;
if ( !conn_gets(inbuf, sizeof(inbuf)) ) return 1;
if ( inbuf[0] != 'v' ) {
if ( !strncmp(inbuf, "OK (", 4) ) {
csync_debug(2, "End of query results: %s", inbuf);
return 1;
}
csync_error_count++;
csync_debug(0, "ERROR from peer: %s", inbuf);
return 1;
}
tmp = strtok(inbuf, "\t");
if (tmp) *checktxt=strdup(url_decode(tmp));
else {
csync_error_count++;
csync_debug(0, "Format error in reply: \\t not found!\n");
return 1;
}
tmp = strtok(0, "\n");
if (tmp) *file=strdup(url_decode(tmp));
else {
csync_error_count++;
csync_debug(0, "Format error in reply: \\n not found!\n");
return 1;
}
csync_debug(2, "Fetched tuple from peer: %s [%s]\n", *file, *checktxt);
return 0;
}
int csync_insynctest(const char *myname, const char *peername, int init_run, int auto_diff, const char *filename)
{
struct textlist *diff_list = 0, *diff_ent;
const struct csync_group *g;
const struct csync_group_host *h;
char *r_file=0, *r_checktxt=0;
int remote_reuse = 0, remote_eof = 0;
int rel, ret = 1;
for (g = csync_group; g; g = g->next) {
if ( !g->myname || strcmp(g->myname, myname) ) continue;
for (h = g->host; h; h = h->next)
if (!strcmp(h->hostname, peername)) goto found_host_check;
}
csync_debug(0, "Host pair not found in configuration.\n");
csync_error_count++;
return 0;
found_host_check:
if ( connect_to_host(peername) ) {
csync_error_count++;
csync_debug(0, "ERROR: Connection to remote host `%s' failed.\n", peername);
return 0;
}
conn_printf("HELLO %s\n", myname);
if (!is_ok_response(read_conn_status(0, peername))) {
csync_debug(0, "ERROR: remote host %s did not accept my identification.\n", peername);
csync_error_count++;
conn_close();
return 0;
}
conn_printf("LIST %s %s", peername, filename ? url_encode(filename) : "-");
for (g = csync_group; g; g = g->next) {
if ( !g->myname || strcmp(g->myname, myname) ) continue;