void
ngx_http_vhost_traffic_status_file_lock(ngx_file_t *file)
{
ngx_err_t err = ngx_lock_fd(file->fd);
if (err == 0) {
return;
}
ngx_log_error(NGX_LOG_ALERT, file->log, err,
ngx_lock_fd_n " \"%s\" failed", file->name.data);
}
void
ngx_shmtx_lock(ngx_shmtx_t *mtx)
{
ngx_err_t err;
err = ngx_lock_fd(mtx->fd);
if (err == 0) {
return;
}
ngx_log_abort(err, ngx_lock_fd_n " %s failed", mtx->name);
}
static ngx_int_t
ngx_rtmp_record_node_open(ngx_rtmp_session_t *s,
ngx_rtmp_record_rec_ctx_t *rctx)
{
ngx_rtmp_record_app_conf_t *rracf;
ngx_rtmp_core_srv_conf_t *cscf;
ngx_err_t err;
ngx_str_t path;
ngx_int_t mode, create_mode;
u_char buf[8], *p;
off_t file_size;
uint32_t tag_size, mlen, timestamp;
rracf = rctx->conf;
tag_size = 0;
if (rctx->file.fd != NGX_INVALID_FILE) {
return NGX_AGAIN;
}
cscf = ngx_rtmp_get_module_srv_conf(s, ngx_rtmp_core_module);
ngx_log_debug1(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
"record: %V opening", &rracf->id);
ngx_memzero(rctx, sizeof(*rctx));
rctx->conf = rracf;
rctx->last = *ngx_cached_time;
rctx->timestamp = ngx_cached_time->sec;
ngx_rtmp_record_make_path(s, rctx, &path);
mode = rracf->append ? NGX_FILE_RDWR : NGX_FILE_WRONLY;
create_mode = rracf->append ? NGX_FILE_CREATE_OR_OPEN : NGX_FILE_TRUNCATE;
ngx_memzero(&rctx->file, sizeof(rctx->file));
rctx->file.offset = 0;
rctx->file.log = s->connection->log;
rctx->file.fd = ngx_open_file(path.data, mode, create_mode,
cscf->file_access);
ngx_str_set(&rctx->file.name, "recorded");
if (rctx->file.fd == NGX_INVALID_FILE) {
err = ngx_errno;
if (err != NGX_ENOENT) {
ngx_log_error(NGX_LOG_CRIT, s->connection->log, err,
"record: %V failed to open file '%V'",
&rracf->id, &path);
}
ngx_rtmp_record_notify_error(s, rctx);
return NGX_OK;
}
#if !(NGX_WIN32)
if (rracf->lock_file) {
err = ngx_lock_fd(rctx->file.fd);
if (err) {
ngx_log_error(NGX_LOG_CRIT, s->connection->log, err,
"record: %V lock failed", &rracf->id);
}
}
#endif
ngx_log_debug2(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
"record: %V opened '%V'", &rracf->id, &path);
if (rracf->notify) {
ngx_rtmp_send_status(s, "NetStream.Record.Start", "status",
rracf->id.data ? (char *) rracf->id.data : "");
}
if (rracf->append) {
file_size = 0;
timestamp = 0;
#if (NGX_WIN32)
{
LONG lo, hi;
lo = 0;
hi = 0;
lo = SetFilePointer(rctx->file.fd, lo, &hi, FILE_END);
file_size = (lo == INVALID_SET_FILE_POINTER ?
(off_t) -1 : (off_t) hi << 32 | (off_t) lo);
}
#else
file_size = lseek(rctx->file.fd, 0, SEEK_END);
#endif
if (file_size == (off_t) -1) {
ngx_log_error(NGX_LOG_CRIT, s->connection->log, ngx_errno,
"record: %V seek failed", &rracf->id);
goto done;
}
if (file_size < 4) {
goto done;
}
if (ngx_read_file(&rctx->file, buf, 4, file_size - 4) != 4) {
ngx_log_error(NGX_LOG_CRIT, s->connection->log, ngx_errno,
"record: %V tag size read failed", &rracf->id);
goto done;
}
p = (u_char *) &tag_size;
p[0] = buf[3];
p[1] = buf[2];
p[2] = buf[1];
p[3] = buf[0];
if (tag_size == 0 || tag_size + 4 > file_size) {
file_size = 0;
goto done;
}
if (ngx_read_file(&rctx->file, buf, 8, file_size - tag_size - 4) != 8)
{
ngx_log_error(NGX_LOG_CRIT, s->connection->log, ngx_errno,
"record: %V tag read failed", &rracf->id);
goto done;
}
p = (u_char *) &mlen;
p[0] = buf[3];
p[1] = buf[2];
p[2] = buf[1];
p[3] = 0;
if (tag_size != mlen + 11) {
ngx_log_error(NGX_LOG_CRIT, s->connection->log, ngx_errno,
"record: %V tag size mismatch: "
"tag_size=%uD, mlen=%uD", &rracf->id, tag_size, mlen);
goto done;
}
p = (u_char *) ×tamp;
p[3] = buf[7];
p[0] = buf[6];
p[1] = buf[5];
p[2] = buf[4];
done:
rctx->file.offset = file_size;
rctx->time_shift = timestamp;
ngx_log_debug3(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
"record: append offset=%O, time=%uD, tag_size=%uD",
file_size, timestamp, tag_size);
}
return NGX_OK;
}
static ngx_int_t
ngx_rtmp_record_node_open(ngx_rtmp_session_t *s,
ngx_rtmp_record_rec_ctx_t *rctx)
{
ngx_rtmp_record_app_conf_t *rracf;
ngx_err_t err;
ngx_str_t path;
rracf = rctx->conf;
if (rctx->file.fd != NGX_INVALID_FILE) {
return NGX_AGAIN;
}
ngx_log_debug1(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
"record: %V opening", &rracf->id);
ngx_memzero(rctx, sizeof(*rctx));
rctx->conf = rracf;
rctx->last = *ngx_cached_time;
rctx->timestamp = ngx_cached_time->sec;
ngx_rtmp_record_make_path(s, rctx, &path);
ngx_memzero(&rctx->file, sizeof(rctx->file));
rctx->file.offset = 0;
rctx->file.log = s->connection->log;
rctx->file.fd = ngx_open_file(path.data, NGX_FILE_WRONLY, NGX_FILE_TRUNCATE,
NGX_FILE_DEFAULT_ACCESS);
if (rctx->file.fd == NGX_INVALID_FILE) {
err = ngx_errno;
if (err != NGX_ENOENT) {
ngx_log_error(NGX_LOG_CRIT, s->connection->log, err,
"record: %V failed to open file '%V'",
&rracf->id, &path);
}
ngx_rtmp_record_notify_error(s, rctx);
return NGX_OK;
}
if (rracf->lock_file) {
err = ngx_lock_fd(rctx->file.fd);
if (err) {
ngx_log_error(NGX_LOG_CRIT, s->connection->log, err,
"record: %V lock failed", &rracf->id);
}
}
ngx_log_debug2(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
"record: %V opened '%V'", &rracf->id, &path);
if (rracf->notify) {
ngx_rtmp_send_status(s, "NetStream.Record.Start", "status",
rracf->id.data ? (char *) rracf->id.data : "");
}
return NGX_OK;
}
