void send_file_by_fd(int sfd, int fd){
data_t buf;
//发送文件给客户端
while(bzero(&buf, sizeof(buf)), (buf.len = read(fd, buf.data, sizeof(buf.data) - 1)) > 0){
send_complete(sfd, &buf);
}
}
/**
* Sends a pending aggregate message for a given group and message
*/
void send_pending(int listidx, int pendidx)
{
switch (group_list[listidx].pending[pendidx].msg) {
case REGISTER:
send_register(listidx, pendidx);
break;
case INFO_ACK:
send_info_ack(listidx, pendidx, FILEINFO);
break;
case STATUS:
send_status(listidx, pendidx);
break;
case COMPLETE:
send_complete(listidx, pendidx);
break;
default:
log(group_list[listidx].group_id, 0, "Tried to send pending on "
"invalid type %s",
func_name(group_list[listidx].pending[pendidx].msg));
return;
}
if (group_list[listidx].pending[pendidx].count <= 0) {
// Finish the cleanup we started in load_pending
free(group_list[listidx].pending[pendidx].naklist);
memset(&group_list[listidx].pending[pendidx], 0,
sizeof(struct pr_pending_info_t));
}
}
/**
* Sends a pending aggregate message for a given group and message
*/
void send_pending(struct pr_group_list_t *group, int pendidx)
{
switch (group->pending[pendidx].msg) {
case REGISTER:
send_register(group, pendidx);
break;
case FILEINFO_ACK:
send_fileinfo_ack(group, pendidx);
break;
case STATUS:
send_status(group, pendidx);
break;
case COMPLETE:
send_complete(group, pendidx);
break;
default:
glog1(group, "Tried to send pending on invalid type %s",
func_name(group->pending[pendidx].msg));
return;
}
if ((group->pending[pendidx].count <= 0) ||
(group->pending[pendidx].msg == STATUS)) {
// Finish the cleanup we started in load_pending
// Always do this for a STATUS, since we don't have a pending list
free(group->pending[pendidx].naklist);
memset(&group->pending[pendidx], 0, sizeof(struct pr_pending_info_t));
}
}
/**
* Send a COMPLETE with the given status in response to a FILEINFO,
* set the phase to MIDGROUP, and reset the timeout
*/
void early_complete(struct group_list_t *group, int status, int freespace)
{
group->phase = PHASE_MIDGROUP;
group->fileinfo.comp_status = status;
send_complete(group, freespace);
print_result_status(group);
set_timeout(group, 0);
}
static void force_completion(guint key_id)
{
if (completion_framework) {
GeanyDocument* doc = document_get_current();
if (doc != NULL) {
send_complete(doc->editor, 0);
}
}
}
void send_file_by_name(int sfd, char * file_name){
struct stat file_stat;
int status = stat(file_name, &file_stat);
int fd = open(file_name, O_RDONLY);
long file_len, offset;
data_t buf;
if(-1 == status || -1 == fd){
send_status(sfd, -1);
return;
}
send_status(sfd, 0);
//接收文件续传位置
recv(sfd, &offset, sizeof(long), 0);
//重定位到续传位置
lseek(fd, offset, SEEK_SET);
//发送文件大小
file_len = file_stat.st_size;
send(sfd, &file_len, sizeof(long), 0);
//发送文件内容
if(file_len > FILE_MMAP_SIZE){//大文件采用内存映射
int i;
long j = 0;
long send_len = file_len - offset;
//char * mpt = (char *)mmap(0, send_len, PROT_READ, MAP_SHARED, fd, offset);
char * mpt = (char *)mmap(0, send_len, PROT_READ, MAP_SHARED, fd, 0);
while(j < send_len){
bzero(&buf, sizeof(buf));
for(i = 0; i < sizeof(buf.data) && j < send_len; i++, j++){
buf.data[i] = mpt[j];
}
buf.len = i;
send_complete(sfd, &buf);
}
munmap(mpt, send_len);
}else{//小文件直接发送
while(bzero(&buf, sizeof(buf)), (buf.len = read(fd, buf.data, sizeof(buf.data) - 1)) > 0){
send_complete(sfd, &buf);
}
}
close(fd);
printf("send flie %s, %ld Bytes\n", file_name, file_len);
fflush(stdout);
}
static gboolean on_editor_notify(GObject* obj, GeanyEditor* editor, SCNotification* nt,
gpointer* user_data)
{
if (!is_completion_file_now()) {
return FALSE;
}
switch (nt->nmhdr.code) {
case SCN_UPDATEUI:
// TODO relocation suggestion window when typings occur scroll (e.g. editting long line)
if (nt->updated & SC_UPDATE_SELECTION) {
suggestWindow->close();
}
break;
case SCN_MODIFIED:
// report before insert position, after delete position
if (edit_tracker.valid) {
if (nt->modificationType & SC_MOD_INSERTTEXT) {
if (nt->position == edit_tracker.start_pos + edit_tracker.text.length()) {
std::string text(nt->text, nt->length); // nt->text is not null term
edit_tracker.text += text;
suggestWindow->filter_add(text.c_str());
} else {
edit_tracker.valid = false;
suggestWindow->close();
}
}
if (nt->modificationType & SC_MOD_DELETETEXT) {
// it was caused by backspace?
if (nt->length == 1 && edit_tracker.text.length() > 0 &&
nt->position + 1 == edit_tracker.start_pos + edit_tracker.text.length()) {
edit_tracker.text.erase(edit_tracker.text.size() - 1);
suggestWindow->filter_backspace();
} else {
edit_tracker.valid = false;
suggestWindow->close();
}
}
}
break;
case SCN_CHARADDED:
if (check_trigger_char(editor)) {
send_complete(editor, FALSE);
}
break;
default:
break;
}
return FALSE;
}
/**
* Read in the contents of a FILEINFO message
* Returns 1 on success, 0 on error or ignore
*/
int read_fileinfo(struct group_list_t *group, const unsigned char *message,
int meslen, struct timeval rxtime)
{
const struct fileinfo_h *fileinfo;
const uint32_t *addrlist;
int listlen, maxsecsize;
const char *name, *flink, *p;
fileinfo = (const struct fileinfo_h *)message;
addrlist = (const uint32_t *)(message + (fileinfo->hlen * 4));
name = (const char *)message + sizeof(struct fileinfo_h);
flink = name + (fileinfo->namelen * 4);
listlen = (meslen - (fileinfo->hlen * 4)) / 4;
if ((meslen < (fileinfo->hlen * 4)) ||
((fileinfo->hlen * 4) < sizeof(struct fileinfo_h)) ||
((fileinfo->namelen * 4) > MAXPATHNAME) ||
((fileinfo->linklen * 4) > MAXPATHNAME) ||
((fileinfo->hlen * 4) != sizeof(struct fileinfo_h) +
(fileinfo->namelen * 4) + (fileinfo->linklen * 4))) {
glog1(group, "Rejecting FILEINFO from server: invalid message size");
send_abort(group, "Rejecting FILEINFO: invalid message size");
return 0;
}
if (!uid_in_list(addrlist, listlen)) {
set_timeout(group, 0);
return 0;
}
if (group->phase == PHASE_RECEIVING) {
// We already got the FILEINFO, so no need to reprocess.
// Just resend the INFO_ACK and reset the timeout
send_fileinfo_ack(group, group->fileinfo.restart);
set_timeout(group, 0);
return 0;
}
if ((group->phase == PHASE_MIDGROUP) &&
(group->file_id == ntohs(fileinfo->file_id))) {
// We already got the FILEINFO, and it's for a completed file.
// So resend the COMPLETE and reset the timeout
send_complete(group, (fileinfo->ftype == FTYPE_FREESPACE));
set_timeout(group, 0);
return 0;
}
// Load fileinfo params into list
memset(&group->fileinfo, 0, sizeof(struct file_t));
group->fileinfo.ftype = fileinfo->ftype;
group->file_id = ntohs(fileinfo->file_id);
strncpy(group->fileinfo.name, name, fileinfo->namelen * 4);
strncpy(group->fileinfo.linkname, flink, fileinfo->linklen * 4);
group->fileinfo.size = (f_offset_t)ntohs(fileinfo->hifsize) << 32;
group->fileinfo.size |= ntohl(fileinfo->lofsize);
if (group->fileinfo.size) {
maxsecsize = (group->blocksize * 8 > MAXSECTION ?
MAXSECTION : group->blocksize * 8);
group->fileinfo.blocks =
(int32_t)((group->fileinfo.size / group->blocksize) +
(group->fileinfo.size % group->blocksize ? 1 : 0));
group->fileinfo.sections = (group->fileinfo.blocks / maxsecsize) +
(group->fileinfo.blocks % maxsecsize ? 1 : 0);
group->fileinfo.secsize_small =
group->fileinfo.blocks / group->fileinfo.sections;
group->fileinfo.secsize_big = group->fileinfo.secsize_small +
(group->fileinfo.blocks % group->fileinfo.sections ? 1 : 0);
group->fileinfo.big_sections = group->fileinfo.blocks -
(group->fileinfo.secsize_small * group->fileinfo.sections);
} else {
group->fileinfo.blocks = 0;
group->fileinfo.sections = 0;
group->fileinfo.secsize_small = 0;
group->fileinfo.secsize_big = 0;
group->fileinfo.big_sections = 0;
}
group->fileinfo.tstamp = ntohl(fileinfo->ftstamp);
group->last_server_ts.tv_sec = ntohl(fileinfo->tstamp_sec);
group->last_server_ts.tv_usec = ntohl(fileinfo->tstamp_usec);
group->last_server_rx_ts = rxtime;
group->fileinfo.fd = -1;
// Run some checks on the filename
if (strlen(group->fileinfo.name) == 0) {
glog1(group, "Rejecting FILEINFO from server: blank file name");
early_complete(group, COMP_STAT_REJECTED, 0);
return 0;
}
p = strstr(group->fileinfo.name, "..");
if ((p != NULL) && ((p[2] == '\x0') || (p[2] == '/') || (p[2] == '\\')) &&
((p == group->fileinfo.name) || (p[-1] == '/') || (p[-1] == '\\'))) {
glog1(group, "Rejecting FILEINFO from server: filename contains ..");
early_complete(group, COMP_STAT_REJECTED, 0);
return 0;
}
if (fileinfo->ftype == FTYPE_LINK) {
if (strlen(group->fileinfo.linkname) == 0) {
glog1(group, "Rejecting FILEINFO from server: blank link name");
early_complete(group, COMP_STAT_REJECTED, 0);
return 0;
}
}
return 1;
}
static int
send_diffs (krb5_context context, slave *s, int log_fd,
const char *database, u_int32_t current_version)
{
krb5_storage *sp;
u_int32_t ver;
time_t timestamp;
enum kadm_ops op;
u_int32_t len;
off_t right, left;
krb5_data data;
int ret = 0;
if (s->version == current_version)
return 0;
if (s->flags & SLAVE_F_DEAD)
return 0;
sp = kadm5_log_goto_end (log_fd);
right = krb5_storage_seek(sp, 0, SEEK_CUR);
for (;;) {
if (kadm5_log_previous (sp, &ver, ×tamp, &op, &len))
abort ();
left = krb5_storage_seek(sp, -16, SEEK_CUR);
if (ver == s->version)
return 0;
if (ver == s->version + 1)
break;
if (left == 0)
return send_complete (context, s, database, current_version);
}
ret = krb5_data_alloc (&data, right - left + 4);
if (ret) {
krb5_warn (context, ret, "send_diffs: krb5_data_alloc");
slave_dead(s);
return 1;
}
krb5_storage_read (sp, (char *)data.data + 4, data.length - 4);
krb5_storage_free(sp);
sp = krb5_storage_from_data (&data);
if (sp == NULL) {
krb5_warnx (context, "send_diffs: krb5_storage_from_data");
slave_dead(s);
return 1;
}
krb5_store_int32 (sp, FOR_YOU);
krb5_storage_free(sp);
ret = krb5_write_priv_message(context, s->ac, &s->fd, &data);
krb5_data_free(&data);
if (ret) {
krb5_warn (context, ret, "send_diffs: krb5_write_priv_message");
slave_dead(s);
return 1;
}
slave_seen(s);
return 0;
}
static int
send_diffs (kadm5_server_context *server_context, slave *s, int log_fd,
const char *database, uint32_t current_version,
uint32_t current_tstamp)
{
krb5_context context = server_context->context;
krb5_storage *sp;
uint32_t ver, initial_version, initial_version2;
uint32_t initial_tstamp, initial_tstamp2;
enum kadm_ops op;
uint32_t len;
off_t right, left;
krb5_ssize_t bytes;
krb5_data data;
int ret = 0;
if (s->flags & SLAVE_F_DEAD) {
krb5_warnx(context, "not sending diffs to dead slave %s", s->name);
return 0;
}
if (s->version == current_version) {
char buf[4];
sp = krb5_storage_from_mem(buf, 4);
if (sp == NULL)
krb5_errx(context, IPROPD_RESTART, "krb5_storage_from_mem");
ret = krb5_store_uint32(sp, YOU_HAVE_LAST_VERSION);
krb5_storage_free(sp);
data.data = buf;
data.length = 4;
if (ret == 0) {
ret = krb5_write_priv_message(context, s->ac, &s->fd, &data);
if (ret) {
krb5_warn(context, ret, "send_diffs: failed to send to slave");
slave_dead(context, s);
}
krb5_warnx(context, "slave %s in sync already at version %ld",
s->name, (long)s->version);
}
return ret;
}
if (verbose)
krb5_warnx(context, "sending diffs to live-seeming slave %s", s->name);
/*
* XXX The code that makes the diffs should be made a separate function,
* then error handling (send_are_you_there() or slave_dead()) can be done
* here.
*/
if (flock(log_fd, LOCK_SH) == -1) {
krb5_warn(context, errno, "could not obtain shared lock on log file");
send_are_you_there(context, s);
return errno;
}
ret = kadm5_log_get_version_fd(server_context, log_fd, LOG_VERSION_FIRST,
&initial_version, &initial_tstamp);
sp = kadm5_log_goto_end(server_context, log_fd);
flock(log_fd, LOCK_UN);
if (ret) {
if (sp != NULL)
krb5_storage_free(sp);
krb5_warn(context, ret, "send_diffs: failed to read log");
send_are_you_there(context, s);
return ret;
}
if (sp == NULL) {
send_are_you_there(context, s);
krb5_warn(context, errno ? errno : EINVAL,
"send_diffs: failed to read log");
return errno ? errno : EINVAL;
}
/*
* We're not holding any locks here, so we can't prevent truncations.
*
* We protect against this by re-checking that the initial version and
* timestamp are the same before and after this loop.
*/
right = krb5_storage_seek(sp, 0, SEEK_CUR);
if (right == (off_t)-1) {
krb5_storage_free(sp);
send_are_you_there(context, s);
return errno;
}
for (;;) {
ret = kadm5_log_previous (context, sp, &ver, NULL, &op, &len);
if (ret)
krb5_err(context, IPROPD_RESTART, ret,
"send_diffs: failed to find previous entry");
left = krb5_storage_seek(sp, -16, SEEK_CUR);
if (left == (off_t)-1) {
krb5_storage_free(sp);
send_are_you_there(context, s);
return errno;
}
if (ver == s->version + 1)
break;
/*
* We don't expect to reach the slave's version, except when it is
* starting empty with the uber record.
*/
if (ver == s->version && !(ver == 0 && op == kadm_nop)) {
/*
* This shouldn't happen, but recall we're not holding a lock on
* the log.
*/
krb5_storage_free(sp);
krb5_warnx(context, "iprop log truncated while sending diffs to "
"slave?? ver = %lu", (unsigned long)ver);
send_are_you_there(context, s);
return 0;
}
/* If we've reached the uber record, send the complete database */
if (left == 0 || (ver == 0 && op == kadm_nop)) {
krb5_storage_free(sp);
krb5_warnx(context,
"slave %s (version %lu) out of sync with master "
"(first version in log %lu), sending complete database",
s->name, (unsigned long)s->version, (unsigned long)ver);
return send_complete (context, s, database, current_version, ver,
initial_tstamp);
}
}
assert(ver == s->version + 1);
krb5_warnx(context,
"syncing slave %s from version %lu to version %lu",
s->name, (unsigned long)s->version,
(unsigned long)current_version);
ret = krb5_data_alloc (&data, right - left + 4);
if (ret) {
krb5_storage_free(sp);
krb5_warn (context, ret, "send_diffs: krb5_data_alloc");
send_are_you_there(context, s);
return 1;
}
bytes = krb5_storage_read(sp, (char *)data.data + 4, data.length - 4);
krb5_storage_free(sp);
if (bytes != data.length - 4) {
krb5_warnx(context, "iprop log truncated while sending diffs to "
"slave?? ver = %lu", (unsigned long)ver);
send_are_you_there(context, s);
return 1;
}
/*
* Check that we have the same log initial version and timestamp now as
* when we dropped the shared lock on the log file! Else we could be
* sending garbage to the slave.
*/
if (flock(log_fd, LOCK_SH) == -1) {
krb5_warn(context, errno, "could not obtain shared lock on log file");
send_are_you_there(context, s);
return 1;
}
ret = kadm5_log_get_version_fd(server_context, log_fd, LOG_VERSION_FIRST,
&initial_version2, &initial_tstamp2);
flock(log_fd, LOCK_UN);
if (ret) {
krb5_warn(context, ret,
"send_diffs: failed to read log while producing diffs");
send_are_you_there(context, s);
return 1;
}
if (initial_version != initial_version2 ||
initial_tstamp != initial_tstamp2) {
krb5_warn(context, ret,
"send_diffs: log truncated while producing diffs");
send_are_you_there(context, s);
return 1;
}
sp = krb5_storage_from_data (&data);
if (sp == NULL) {
krb5_warnx (context, "send_diffs: krb5_storage_from_data");
send_are_you_there(context, s);
return 1;
}
krb5_store_uint32 (sp, FOR_YOU);
krb5_storage_free(sp);
ret = krb5_write_priv_message(context, s->ac, &s->fd, &data);
krb5_data_free(&data);
if (ret) {
krb5_warn (context, ret, "send_diffs: krb5_write_priv_message");
slave_dead(context, s);
return 1;
}
slave_seen(s);
s->version = current_version;
krb5_warnx(context, "slave %s is now up to date (%u)", s->name, s->version);
return 0;
}
/**
* Gets the current timeout value to use for the main loop
*
* First check to see if any active groups have an expired timeout, and
* handle that timeout. Once all expired timeouts have been handled, find
* the active group with the earliest timeout and return the time until that
* timeout. If there are no active groups, return NULL.
*/
struct timeval *getrecenttimeout(void)
{
static struct timeval tv = {0,0};
struct timeval current_timestamp, min_timestamp;
int i, found_timeout, done, sent_naks;
struct group_list_t *group;
unsigned int section, nak_count;
unsigned char *naks;
gettimeofday(¤t_timestamp, NULL);
done = 0;
while (!done) {
found_timeout = 0;
done = 1;
for (i = 0; i < MAXLIST; i++) {
group = &group_list[i];
if (group->group_id != 0) {
if (cmptimestamp(current_timestamp, group->timeout_time) >= 0) {
switch (group->phase) {
case PHASE_REGISTERED:
send_register(group);
break;
case PHASE_RECEIVING:
case PHASE_MIDGROUP:
glog1(group, "Transfer timed out");
send_abort(group, "Transfer timed out");
break;
case PHASE_COMPLETE:
send_complete(group, 0);
break;
}
done = 0;
} else if ((!found_timeout) ||
(cmptimestamp(group->timeout_time,
min_timestamp) < 0)) {
glog5(group, "found min timeout time: %d:%06d",
group->timeout_time.tv_sec,
group->timeout_time.tv_usec);
min_timestamp = group->timeout_time;
found_timeout = 1;
}
// Check for a NAK timeout for sending a STATUS or COMPLETE
if ((group->fileinfo.nak_time.tv_sec != 0) &&
cmptimestamp(current_timestamp,
group->fileinfo.nak_time) >= 0) {
group->fileinfo.nak_time.tv_sec = 0;
group->fileinfo.nak_time.tv_usec = 0;
// Send NAKs
sent_naks = 0;
retry_naks:
for (section = group->fileinfo.nak_section_first;
section < group->fileinfo.nak_section_last;
section++) {
naks = NULL;
nak_count = get_naks(group, section, &naks);
glog3(group, "read %d NAKs for section %d",
nak_count, section);
if (nak_count > 0) {
send_status(group, section, naks, nak_count);
sent_naks = 1;
}
free(naks);
naks = NULL;
}
if (file_done(group, 1)) {
glog2(group, "File transfer complete");
send_complete(group, 0);
file_cleanup(group, 0);
} else if (group->fileinfo.got_done && !sent_naks) {
// We didn't send any NAKs since the last time
// but the server is asking for some,
// so check all prior sections
group->fileinfo.nak_section_last =
group->fileinfo.nak_section_first;
group->fileinfo.nak_section_first = 0;
group->fileinfo.got_done = 0;
goto retry_naks;
}
} else if ((group->fileinfo.nak_time.tv_sec != 0) &&
((!found_timeout) ||
(cmptimestamp(group->fileinfo.nak_time,
min_timestamp) < 0))) {
glog5(group, "found min nak time: %d:%06d",
group->fileinfo.nak_time.tv_sec,
group->fileinfo.nak_time.tv_usec);
min_timestamp = group->fileinfo.nak_time;
found_timeout = 1;
}
// Check congestion control feedback timer
if (!group->isclr) {
if ((group->cc_time.tv_sec != 0) &&
(cmptimestamp(current_timestamp,
group->cc_time) >= 0)) {
send_cc_ack(group);
} else if ((group->cc_time.tv_sec != 0) &&
((!found_timeout) ||
(cmptimestamp(group->cc_time,
min_timestamp) < 0))) {
glog5(group, "found min CC time: %d:%06d",
group->cc_time.tv_sec, group->cc_time.tv_usec);
min_timestamp = group->cc_time;
found_timeout = 1;
}
}
}
}
// Check timeout for proxy key request
if (has_proxy && (proxy_pubkey.key == 0)) {
if (cmptimestamp(current_timestamp, next_keyreq_time) >= 0) {
send_key_req();
done = 0;
} else if ((!found_timeout) ||
(cmptimestamp(next_keyreq_time, min_timestamp) < 0)) {
min_timestamp = next_keyreq_time;
found_timeout = 1;
}
}
// Check timeout for sending heartbeat
if (hbhost_count) {
if (cmptimestamp(current_timestamp, next_hb_time) >= 0) {
send_hb_request(listener, hb_hosts, hbhost_count,
&next_hb_time, hb_interval, uid);
done = 0;
} else if ((!found_timeout) ||
(cmptimestamp(next_hb_time, min_timestamp) < 0)) {
min_timestamp = next_hb_time;
found_timeout = 1;
}
}
}
if (found_timeout) {
tv = diff_timeval(min_timestamp, current_timestamp);
return &tv;
} else {
return NULL;
}
}
/**
* Gets the current timeout value to use for the main loop
*
* First check to see if any active groups have an expired timeout, and
* handle that timeout. Once all expired timeouts have been handled, find
* the active group with the earliest timeout and return the time until that
* timeout. If there are no active groups, return NULL.
*/
struct timeval *getrecenttimeout()
{
static struct timeval tv = {0,0};
struct timeval current_timestamp, min_timestamp;
int i, found_timeout, done;
int32_t usecs;
gettimeofday(¤t_timestamp, NULL);
done = 0;
while (!done) {
found_timeout = 0;
done = 1;
for (i = 0; i < MAXLIST; i++) {
if (group_list[i].group_id != 0) {
if (cmptimestamp(current_timestamp,
group_list[i].timeout_time) >= 0) {
switch (group_list[i].phase) {
case PHASE_REGISTERED:
send_register(i);
break;
case PHASE_RECEIVING:
case PHASE_MIDGROUP:
log1(group_list[i].group_id, group_list[i].file_id,
"Transfer timed out");
send_abort(i, "Transfer timed out");
break;
case PHASE_COMPLETE:
send_complete(i);
break;
}
done = 0;
} else if (!found_timeout) {
min_timestamp = group_list[i].timeout_time;
found_timeout = 1;
} else if (cmptimestamp(group_list[i].timeout_time,
min_timestamp) < 0) {
min_timestamp = group_list[i].timeout_time;
}
}
}
// Check timeout for proxy key request
if (has_proxy && (proxy_key == (RSA_key_t)NULL)) {
if (cmptimestamp(current_timestamp, next_keyreq_time) >= 0) {
send_key_req();
done = 0;
} else if ((!found_timeout) ||
(cmptimestamp(next_keyreq_time, min_timestamp) < 0)) {
min_timestamp = next_keyreq_time;
found_timeout = 1;
}
}
// Check timeout for sending heartbeat
if (hbhost_count) {
if (cmptimestamp(current_timestamp, next_hb_time) >= 0) {
send_hb_request(listener, hb_hosts, hbhost_count,
&next_hb_time, hb_interval);
done = 0;
} else if ((!found_timeout) ||
(cmptimestamp(next_hb_time, min_timestamp) < 0)) {
min_timestamp = next_hb_time;
found_timeout = 1;
}
}
}
if (found_timeout) {
usecs = (int32_t)diff_usec(min_timestamp, current_timestamp);
tv.tv_sec = usecs / 1000000;
tv.tv_usec = usecs % 1000000;
return &tv;
} else {
return NULL;
}
}
static int
send_diffs (krb5_context context, slave *s, int log_fd,
const char *database, uint32_t current_version)
{
krb5_storage *sp;
uint32_t ver;
time_t timestamp;
enum kadm_ops op;
uint32_t len;
off_t right, left;
krb5_data data;
int ret = 0;
if (s->version == current_version) {
krb5_warnx(context, "slave %s in sync already at version %ld",
s->name, (long)s->version);
return 0;
}
if (s->flags & SLAVE_F_DEAD)
return 0;
/* if slave is a fresh client, starting over */
if (s->version == 0) {
krb5_warnx(context, "sending complete log to fresh slave %s",
s->name);
return send_complete (context, s, database, current_version);
}
sp = kadm5_log_goto_end (log_fd);
right = krb5_storage_seek(sp, 0, SEEK_CUR);
for (;;) {
ret = kadm5_log_previous (context, sp, &ver, ×tamp, &op, &len);
if (ret)
krb5_err(context, 1, ret,
"send_diffs: failed to find previous entry");
left = krb5_storage_seek(sp, -16, SEEK_CUR);
if (ver == s->version)
return 0;
if (ver == s->version + 1)
break;
if (left == 0) {
krb5_storage_free(sp);
krb5_warnx(context,
"slave %s (version %lu) out of sync with master "
"(first version in log %lu), sending complete database",
s->name, (unsigned long)s->version, (unsigned long)ver);
return send_complete (context, s, database, current_version);
}
}
krb5_warnx(context,
"syncing slave %s from version %lu to version %lu",
s->name, (unsigned long)s->version,
(unsigned long)current_version);
ret = krb5_data_alloc (&data, right - left + 4);
if (ret) {
krb5_storage_free(sp);
krb5_warn (context, ret, "send_diffs: krb5_data_alloc");
slave_dead(context, s);
return 1;
}
krb5_storage_read (sp, (char *)data.data + 4, data.length - 4);
krb5_storage_free(sp);
sp = krb5_storage_from_data (&data);
if (sp == NULL) {
krb5_warnx (context, "send_diffs: krb5_storage_from_data");
slave_dead(context, s);
return 1;
}
krb5_store_int32 (sp, FOR_YOU);
krb5_storage_free(sp);
ret = krb5_write_priv_message(context, s->ac, &s->fd, &data);
krb5_data_free(&data);
if (ret) {
krb5_warn (context, ret, "send_diffs: krb5_write_priv_message");
slave_dead(context, s);
return 1;
}
slave_seen(s);
s->version = current_version;
return 0;
}