void masterconn_download_info(masterconn *eptr,const uint8_t *data,uint32_t length) {
if (length!=1 && length!=8) {
syslog(LOG_NOTICE,"MATOAN_DOWNLOAD_INFO - wrong size (%"PRIu32"/1|8)",length);
eptr->mode = KILL;
return;
}
passert(data);
if (length==1) {
eptr->downloading = 0;
syslog(LOG_NOTICE,"download start error");
return;
}
eptr->filesize = get64bit(&data);
eptr->dloffset = 0;
eptr->downloadretrycnt = 0;
eptr->dlstartuts = monotonic_useconds();
if (eptr->downloading==1) {
eptr->metafd = open("metadata_ml.tmp",O_WRONLY | O_TRUNC | O_CREAT,0666);
} else if (eptr->downloading==11 || eptr->downloading==12) {
eptr->metafd = open("changelog_ml.tmp",O_WRONLY | O_TRUNC | O_CREAT,0666);
} else {
syslog(LOG_NOTICE,"unexpected MATOAN_DOWNLOAD_INFO packet");
eptr->mode = KILL;
return;
}
if (eptr->metafd<0) {
mfs_errlog_silent(LOG_NOTICE,"error opening metafile");
masterconn_download_end(eptr);
return;
}
masterconn_download_next(eptr);
}
void masterconn_download_start(serventry *eptr,const uint8_t *data,uint32_t length) {
if (length!=1 && length!=8) {
MFSLOG(LOG_NOTICE,"MATOSLA_DOWNLOAD_START - wrong size (%"PRIu32"/1|8)",length);
eptr->mode = KILL;
return;
}
if (length==1) {
MFSLOG(LOG_NOTICE,"download start error");
return;
}
eptr->filesize = get64bit(&data);
eptr->dloffset = 0;
eptr->retrycnt = 0;
eptr->dlstartuts = main_utime();
if (eptr->downloading==1) {
eptr->metafd = open("metadata.tmp",O_WRONLY | O_TRUNC | O_CREAT,0666);
} else if (eptr->downloading==2) {
eptr->metafd = open("changelog.0.tmp",O_WRONLY | O_TRUNC | O_CREAT,0666);
} else {
MFSLOG(LOG_NOTICE,"unexpected MATOSLA_DOWNLOAD_START packet");
eptr->mode = KILL;
return;
}
if (eptr->metafd<0) {
MFSLOG(LOG_NOTICE,"error opening metafile: %m");
masterconn_download_end(eptr,4);
return;
}
masterconn_download_next(eptr);
}
void masterconn_download_data(masterconn *eptr,const uint8_t *data,uint32_t length) {
uint64_t offset;
uint32_t leng;
uint32_t crc;
ssize_t ret;
if (eptr->metafd<0) {
syslog(LOG_NOTICE,"MATOAN_DOWNLOAD_DATA - file not opened");
eptr->mode = KILL;
return;
}
if (length<16) {
syslog(LOG_NOTICE,"MATOAN_DOWNLOAD_DATA - wrong size (%"PRIu32"/16+data)",length);
eptr->mode = KILL;
return;
}
passert(data);
offset = get64bit(&data);
leng = get32bit(&data);
crc = get32bit(&data);
if (leng+16!=length) {
syslog(LOG_NOTICE,"MATOAN_DOWNLOAD_DATA - wrong size (%"PRIu32"/16+%"PRIu32")",length,leng);
eptr->mode = KILL;
return;
}
if (offset!=eptr->dloffset) {
syslog(LOG_NOTICE,"MATOAN_DOWNLOAD_DATA - unexpected file offset (%"PRIu64"/%"PRIu64")",offset,eptr->dloffset);
eptr->mode = KILL;
return;
}
if (offset+leng>eptr->filesize) {
syslog(LOG_NOTICE,"MATOAN_DOWNLOAD_DATA - unexpected file size (%"PRIu64"/%"PRIu64")",offset+leng,eptr->filesize);
eptr->mode = KILL;
return;
}
#ifdef HAVE_PWRITE
ret = pwrite(eptr->metafd,data,leng,offset);
#else /* HAVE_PWRITE */
lseek(eptr->metafd,offset,SEEK_SET);
ret = write(eptr->metafd,data,leng);
#endif /* HAVE_PWRITE */
if (ret!=(ssize_t)leng) {
mfs_errlog_silent(LOG_NOTICE,"error writing metafile");
if (eptr->downloadretrycnt>=5) {
masterconn_download_end(eptr);
} else {
eptr->downloadretrycnt++;
masterconn_download_next(eptr);
}
return;
}
if (crc!=mycrc32(0,data,leng)) {
syslog(LOG_NOTICE,"metafile data crc error");
if (eptr->downloadretrycnt>=5) {
masterconn_download_end(eptr);
} else {
eptr->downloadretrycnt++;
masterconn_download_next(eptr);
}
return;
}
if (fsync(eptr->metafd)<0) {
mfs_errlog_silent(LOG_NOTICE,"error syncing metafile");
if (eptr->downloadretrycnt>=5) {
masterconn_download_end(eptr);
} else {
eptr->downloadretrycnt++;
masterconn_download_next(eptr);
}
return;
}
eptr->dloffset+=leng;
eptr->downloadretrycnt=0;
masterconn_download_next(eptr);
}