static gboolean fastcgi_get_packet(fastcgi_connection *fcon) {
const unsigned char *data;
/* already got packet */
if (fcon->fcgi_in_record.valid) {
if (0 == fcon->fcgi_in_record.remainingContent) {
/* wait for padding data ? */
gint len = fcon->fcgi_in->length;
if (len > fcon->fcgi_in_record.remainingPadding) len = fcon->fcgi_in_record.remainingPadding;
li_chunkqueue_skip(fcon->fcgi_in, len);
fcon->fcgi_in_record.remainingPadding -= len;
if (0 != fcon->fcgi_in_record.remainingPadding) return FALSE; /* wait for data */
fcon->fcgi_in_record.valid = FALSE; /* read next packet */
} else {
return (fcon->fcgi_in->length > 0); /* wait for/handle more content */
}
}
if (!li_chunkqueue_extract_to_bytearr(fcon->vr, fcon->fcgi_in, FCGI_HEADER_LEN, fcon->buf_in_record)) return FALSE; /* need more data */
data = (const unsigned char*) fcon->buf_in_record->data;
fcon->fcgi_in_record.version = data[0];
fcon->fcgi_in_record.type = data[1];
fcon->fcgi_in_record.requestID = (data[2] << 8) | (data[3]);
fcon->fcgi_in_record.contentLength = (data[4] << 8) | (data[5]);
fcon->fcgi_in_record.paddingLength = data[6];
fcon->fcgi_in_record.remainingContent = fcon->fcgi_in_record.contentLength;
fcon->fcgi_in_record.remainingPadding = fcon->fcgi_in_record.paddingLength;
fcon->fcgi_in_record.valid = TRUE;
fcon->fcgi_in_record.first = TRUE;
li_chunkqueue_skip(fcon->fcgi_in, FCGI_HEADER_LEN);
return TRUE;
}
static ssize_t stream_pull(gnutls_transport_ptr_t trans, void *buf, size_t len) {
liGnuTLSFilter *f = (liGnuTLSFilter*) trans;
liChunkQueue *cq;
errno = ECONNRESET;
if (NULL == f || NULL == f->crypt_drain.out) return -1;
cq = f->crypt_drain.out;
if (0 == cq->length) {
if (cq->is_closed) {
errno = 0;
return 0;
} else {
errno = EAGAIN;
return -1;
}
}
if (len > (size_t) cq->length) len = cq->length;
if (!li_chunkqueue_extract_to_memory(cq, len, buf, NULL)) return -1;
li_chunkqueue_skip(cq, len);
errno = 0;
return len;
}
static gboolean fastcgi_parse_response(fastcgi_connection *fcon) {
liVRequest *vr = fcon->vr;
liPlugin *p = fcon->ctx->plugin;
gint len;
while (fastcgi_get_packet(fcon)) {
if (fcon->fcgi_in_record.version != FCGI_VERSION_1) {
VR_ERROR(vr, "(%s) Unknown fastcgi protocol version %i", fcon->ctx->socket_str->str, (gint) fcon->fcgi_in_record.version);
close(fcon->fd);
fcon->fd = -1;
li_vrequest_error(vr);
return FALSE;
}
switch (fcon->fcgi_in_record.type) {
case FCGI_END_REQUEST:
li_chunkqueue_skip(fcon->fcgi_in, fastcgi_available(fcon));
fcon->stdout->is_closed = TRUE;
break;
case FCGI_STDOUT:
if (0 == fcon->fcgi_in_record.contentLength) {
fcon->stdout->is_closed = TRUE;
} else {
li_chunkqueue_steal_len(fcon->stdout, fcon->fcgi_in, fastcgi_available(fcon));
}
break;
case FCGI_STDERR:
len = fastcgi_available(fcon);
li_chunkqueue_extract_to(vr, fcon->fcgi_in, len, vr->wrk->tmp_str);
if (OPTION(FASTCGI_OPTION_LOG_PLAIN_ERRORS).boolean) {
li_log_split_lines(vr->wrk->srv, vr, LI_LOG_LEVEL_BACKEND, 0, vr->wrk->tmp_str->str, "");
} else {
VR_BACKEND_LINES(vr, vr->wrk->tmp_str->str, "(fcgi-stderr %s) ", fcon->ctx->socket_str->str);
}
li_chunkqueue_skip(fcon->fcgi_in, len);
break;
default:
if (fcon->fcgi_in_record.first) VR_WARNING(vr, "(%s) Unhandled fastcgi record type %i", fcon->ctx->socket_str->str, (gint) fcon->fcgi_in_record.type);
li_chunkqueue_skip(fcon->fcgi_in, fastcgi_available(fcon));
break;
}
fcon->fcgi_in_record.first = FALSE;
}
return TRUE;
}
liNetworkStatus li_network_backend_write(liVRequest *vr, int fd, liChunkQueue *cq, goffset *write_max) {
const ssize_t blocksize = 16*1024; /* 16k */
char *block_data;
off_t block_len;
ssize_t r;
gboolean did_write_something = FALSE;
liChunkIter ci;
do {
if (0 == cq->length)
return did_write_something ? LI_NETWORK_STATUS_SUCCESS : LI_NETWORK_STATUS_FATAL_ERROR;
ci = li_chunkqueue_iter(cq);
switch (li_chunkiter_read(vr, ci, 0, blocksize, &block_data, &block_len)) {
case LI_HANDLER_GO_ON:
break;
case LI_HANDLER_ERROR:
default:
return LI_NETWORK_STATUS_FATAL_ERROR;
}
if (-1 == (r = li_net_write(fd, block_data, block_len))) {
switch (errno) {
case EAGAIN:
#if EWOULDBLOCK != EAGAIN
case EWOULDBLOCK:
#endif
return did_write_something ? LI_NETWORK_STATUS_SUCCESS : LI_NETWORK_STATUS_WAIT_FOR_EVENT;
case ECONNRESET:
case EPIPE:
case ETIMEDOUT:
return LI_NETWORK_STATUS_CONNECTION_CLOSE;
default:
VR_ERROR(vr, "oops, write to fd=%d failed: %s", fd, g_strerror(errno));
return LI_NETWORK_STATUS_FATAL_ERROR;
}
} else if (0 == r) {
return did_write_something ? LI_NETWORK_STATUS_SUCCESS : LI_NETWORK_STATUS_WAIT_FOR_EVENT;
}
li_chunkqueue_skip(cq, r);
did_write_something = TRUE;
*write_max -= r;
} while (r == block_len && *write_max > 0);
return LI_NETWORK_STATUS_SUCCESS;
}
static liHandlerResult memcache_store_filter(liVRequest *vr, liFilter *f) {
memcache_filter *mf = (memcache_filter*) f->param;
if (NULL == f->in) {
memcache_store_filter_free(vr, f);
/* didn't handle f->in->is_closed? abort forwarding */
if (!f->out->is_closed) li_stream_reset(&f->stream);
return LI_HANDLER_GO_ON;
}
if (NULL == mf) goto forward;
if (f->in->is_closed && 0 == f->in->length && f->out->is_closed) {
/* nothing to do anymore */
return LI_HANDLER_GO_ON;
}
/* check if size still fits into buffer */
if ((gssize) (f->in->length + mf->buf->used) > (gssize) mf->ctx->maxsize) {
/* response too big, switch to "forward" mode */
memcache_store_filter_free(vr, f);
goto forward;
}
while (0 < f->in->length) {
char *data;
off_t len;
liChunkIter ci;
liHandlerResult res;
GError *err = NULL;
ci = li_chunkqueue_iter(f->in);
if (LI_HANDLER_GO_ON != (res = li_chunkiter_read(ci, 0, 16*1024, &data, &len, &err))) {
if (NULL != err) {
VR_ERROR(vr, "Couldn't read data from chunkqueue: %s", err->message);
g_error_free(err);
}
return res;
}
if ((gssize) (len + mf->buf->used) > (gssize) mf->ctx->maxsize) {
/* response too big, switch to "forward" mode */
memcache_store_filter_free(vr, f);
goto forward;
}
memcpy(mf->buf->addr + mf->buf->used, data, len);
mf->buf->used += len;
if (!f->out->is_closed) {
li_chunkqueue_steal_len(f->out, f->in, len);
} else {
li_chunkqueue_skip(f->in, len);
}
}
if (f->in->is_closed) {
/* finally: store response in memcached */
liMemcachedCon *con;
GError *err = NULL;
liMemcachedRequest *req;
memcached_ctx *ctx = mf->ctx;
assert(0 == f->in->length);
f->out->is_closed = TRUE;
con = mc_ctx_prepare(ctx, vr->wrk);
mc_ctx_build_key(vr->wrk->tmp_str, ctx, vr);
if (NULL != vr && CORE_OPTION(LI_CORE_OPTION_DEBUG_REQUEST_HANDLING).boolean) {
VR_DEBUG(vr, "memcached.store: storing response for key '%s'", vr->wrk->tmp_str->str);
}
req = li_memcached_set(con, vr->wrk->tmp_str, ctx->flags, ctx->ttl, mf->buf, NULL, NULL, &err);
memcache_store_filter_free(vr, f);
if (NULL == req) {
if (NULL != err) {
if (NULL != vr && LI_MEMCACHED_DISABLED != err->code) {
VR_ERROR(vr, "memcached.store: set failed: %s", err->message);
}
g_clear_error(&err);
} else if (NULL != vr) {
VR_ERROR(vr, "memcached.store: set failed: %s", "Unkown error");
}
}
}
return LI_HANDLER_GO_ON;
forward:
if (f->out->is_closed) {
li_chunkqueue_skip_all(f->in);
li_stream_disconnect(&f->stream);
} else {
li_chunkqueue_steal_all(f->out, f->in);
if (f->in->is_closed) f->out->is_closed = f->in->is_closed;
}
return LI_HANDLER_GO_ON;
}
static void do_gnutls_write(liGnuTLSFilter *f) {
const ssize_t blocksize = 16*1024; /* 16k */
char *block_data;
off_t block_len;
ssize_t r;
off_t write_max;
#ifdef USE_CORK
gboolean corked = FALSE;
#endif
liChunkQueue *cq = f->plain_drain.out;
f_acquire(f);
f->write_wants_read = FALSE;
/* use space in (encrypted) outgoing buffer as amounts of bytes we try to write from (plain) output
* don't care if we write a little bit more than the limit allowed */
write_max = li_chunkqueue_limit_available(f->crypt_source.out);
LI_FORCE_ASSERT(write_max >= 0); /* we set a limit! */
if (0 == write_max) goto out;
/* if we start writing, try to write at least blocksize bytes */
if (write_max < blocksize) write_max = blocksize;
if (NULL != f->session && !f->initial_handshaked_finished && !do_gnutls_handshake(f, TRUE)) goto out;
if (NULL == f->session) {
f_abort_gnutls(f);
goto out;
}
#ifdef USE_CORK
if (0 != cq->length && cq->queue.length > 1) {
corked = TRUE;
gnutls_record_cork(f->session);
}
#endif
do {
GError *err = NULL;
liChunkIter ci;
if (0 == cq->length) break;
ci = li_chunkqueue_iter(cq);
switch (li_chunkiter_read(ci, 0, blocksize, &block_data, &block_len, &err)) {
case LI_HANDLER_GO_ON:
break;
case LI_HANDLER_ERROR:
if (NULL != err) {
_ERROR(f->srv, f->wrk, f->log_context, "Couldn't read data from chunkqueue: %s", err->message);
g_error_free(err);
}
/* fall through */
default:
f_abort_gnutls(f);
goto out;
}
r = gnutls_record_send(f->session, block_data, block_len);
if (r <= 0) {
do_handle_error(f, "gnutls_record_send", r, TRUE);
goto out;
}
li_chunkqueue_skip(cq, r);
write_max -= r;
} while (r == block_len && write_max > 0);
if (cq->is_closed && 0 == cq->length) {
r = gnutls_bye(f->session, GNUTLS_SHUT_RDWR);
switch (r) {
case GNUTLS_E_SUCCESS:
case GNUTLS_E_AGAIN:
case GNUTLS_E_INTERRUPTED:
f->plain_source.out->is_closed = TRUE;
f->crypt_source.out->is_closed = TRUE;
f->crypt_drain.out->is_closed = TRUE;
li_stream_disconnect(&f->crypt_source); /* plain in -> crypt out */
f_close_gnutls(f);
break;
default:
do_handle_error(f, "gnutls_bye", r, TRUE);
f_abort_gnutls(f);
break;
}
} else if (0 < cq->length && 0 != li_chunkqueue_limit_available(f->crypt_source.out)) {
li_stream_again_later(&f->plain_drain);
}
out:
#ifdef USE_CORK
if (NULL != f->session && corked) {
corked = TRUE;
gnutls_record_uncork(f->session, 0);
}
#endif
f_release(f);
}
/* first chunk must be a STRING_CHUNK ! */
liNetworkStatus li_network_backend_writev(int fd, liChunkQueue *cq, goffset *write_max, GError **err) {
off_t we_have;
ssize_t r;
gboolean did_write_something = FALSE;
liChunkIter ci;
liChunk *c;
liNetworkStatus res = LI_NETWORK_STATUS_FATAL_ERROR;
GArray *chunks = g_array_sized_new(FALSE, TRUE, sizeof(struct iovec), UIO_MAXIOV);
if (0 == cq->length) goto cleanup; /* FATAL ERROR */
do {
ci = li_chunkqueue_iter(cq);
if (STRING_CHUNK != (c = li_chunkiter_chunk(ci))->type && MEM_CHUNK != c->type && BUFFER_CHUNK != c->type) {
res = did_write_something ? LI_NETWORK_STATUS_SUCCESS : LI_NETWORK_STATUS_FATAL_ERROR;
goto cleanup;
}
we_have = 0;
do {
guint i = chunks->len;
off_t len = li_chunk_length(c);
struct iovec *v;
g_array_set_size(chunks, i + 1);
v = &g_array_index(chunks, struct iovec, i);
if (c->type == STRING_CHUNK) {
v->iov_base = c->data.str->str + c->offset;
} else if (c->type == MEM_CHUNK) {
v->iov_base = c->mem->data + c->offset;
} else { /* if (c->type == BUFFER_CHUNK) */
v->iov_base = c->data.buffer.buffer->addr + c->data.buffer.offset + c->offset;
}
if (len > *write_max - we_have) len = *write_max - we_have;
v->iov_len = len;
we_have += len;
} while (we_have < *write_max &&
li_chunkiter_next(&ci) &&
(STRING_CHUNK == (c = li_chunkiter_chunk(ci))->type || MEM_CHUNK == c->type || BUFFER_CHUNK == c->type) &&
chunks->len < UIO_MAXIOV);
while (-1 == (r = writev(fd, (struct iovec*) chunks->data, chunks->len))) {
switch (errno) {
case EAGAIN:
#if EWOULDBLOCK != EAGAIN
case EWOULDBLOCK:
#endif
res = LI_NETWORK_STATUS_WAIT_FOR_EVENT;
goto cleanup;
case ECONNRESET:
case EPIPE:
case ETIMEDOUT:
res = LI_NETWORK_STATUS_CONNECTION_CLOSE;
goto cleanup;
case EINTR:
break; /* try again */
default:
g_set_error(err, LI_NETWORK_ERROR, 0, "li_network_backend_writev: oops, write to fd=%d failed: %s", fd, g_strerror(errno));
goto cleanup;
}
}
if (0 == r) {
res = LI_NETWORK_STATUS_WAIT_FOR_EVENT;
goto cleanup;
}
li_chunkqueue_skip(cq, r);
*write_max -= r;
if (r != we_have) {
res = LI_NETWORK_STATUS_WAIT_FOR_EVENT;
goto cleanup;
}
if (0 == cq->length) {
res = LI_NETWORK_STATUS_SUCCESS;
goto cleanup;
}
did_write_something = TRUE;
g_array_set_size(chunks, 0);
} while (*write_max > 0);
res = LI_NETWORK_STATUS_SUCCESS;
cleanup:
g_array_free(chunks, TRUE);
return res;
}
static void bod_handle_data(bod_state *state) {
liChunkQueue *out = state->stream.out;
liChunkQueue *in;
if (out->is_closed) {
li_stream_disconnect(&state->stream);
bod_close(state);
return;
}
in = (state->stream.source != NULL) ? state->stream.source->out : NULL;
if (NULL == in) goto out;
if (NULL == state->vr) {
li_chunkqueue_steal_all(out, in);
goto out;
}
while (in->length > 0) {
liChunk *c = li_chunkqueue_first_chunk(in);
liChunkIter ci;
off_t length, data_len;
char *data = NULL;
GError *err;
assert(UNUSED_CHUNK != c->type);
switch (c->type) {
case UNUSED_CHUNK:
/* shouldn't happen anyway, but stealing it is ok here too */
case FILE_CHUNK:
if (state->split_on_file_chunks) {
bod_close(state);
} else {
bod_flush(state);
}
li_chunkqueue_steal_chunk(out, in);
break;
case STRING_CHUNK:
case MEM_CHUNK:
case BUFFER_CHUNK:
if (!bod_open(state)) return;
length = li_chunk_length(c);
ci = li_chunkqueue_iter(in);
err = NULL;
if (LI_HANDLER_GO_ON != li_chunkiter_read(ci, 0, length, &data, &data_len, &err)) {
if (NULL != err) {
VR_ERROR(state->vr, "%s", err->message);
g_error_free(err);
}
bod_error(state);
return;
}
while ( data_len > 0 ) {
ssize_t r;
r = pwrite(state->tempfile->fd, data, data_len, state->write_pos);
if (r < 0) {
switch (errno) {
case EINTR: continue;
default: break;
}
VR_ERROR(state->vr, "pwrite failed: %s", g_strerror(errno));
bod_stop(state); /* write failures are not critical */
return;
}
data += r;
data_len -= r;
state->write_pos += r;
}
li_chunkqueue_skip(in, length);
break;
}
}
bod_autoflush(state);
out:
if (NULL == in || in->is_closed) {
out->is_closed = TRUE;
bod_close(state); /* close/flush ignores out->is_closed */
li_stream_notify(&state->stream); /* if no flush happened we still notify */
}
}
liHandlerResult li_filter_buffer_on_disk(liVRequest *vr, liChunkQueue *out, liChunkQueue *in, bod_state *state) {
UNUSED(vr);
if (out->is_closed) {
in->is_closed = TRUE;
li_chunkqueue_skip_all(in);
bod_close(state);
return LI_HANDLER_GO_ON;
}
while (in->length > 0) {
liChunk *c = li_chunkqueue_first_chunk(in);
liChunkIter ci;
off_t length, data_len;
char *data = NULL;
GError *err;
switch (c->type) {
case UNUSED_CHUNK: return LI_HANDLER_ERROR;
case FILE_CHUNK:
bod_flush(out, state);
if (state->split_on_file_chunks) {
bod_close(state);
}
li_chunkqueue_steal_chunk(out, in);
break;
case STRING_CHUNK:
case MEM_CHUNK:
case BUFFER_CHUNK:
if (!bod_open(vr, state)) return LI_HANDLER_ERROR;
length = li_chunk_length(c);
ci = li_chunkqueue_iter(in);
err = NULL;
if (LI_HANDLER_GO_ON != li_chunkiter_read(ci, 0, length, &data, &data_len, &err)) {
if (NULL != err) {
VR_ERROR(vr, "%s", err->message);
g_error_free(err);
}
return LI_HANDLER_ERROR;
}
while ( data_len > 0 ) {
ssize_t r;
r = pwrite(state->tempfile->fd, data, data_len, state->write_pos);
if (r < 0) {
switch (errno) {
case EINTR: continue;
default: break;
}
VR_ERROR(vr, "pwrite failed: %s", g_strerror(errno));
return LI_HANDLER_ERROR;
}
data += r;
data_len -= r;
state->write_pos += r;
}
li_chunkqueue_skip(in, length);
break;
}
}
bod_autoflush(out, state);
if (in->is_closed) {
bod_flush(out, state);
out->is_closed = TRUE;
bod_close(state);
return LI_HANDLER_GO_ON;
}
return LI_HANDLER_GO_ON;
}
gboolean li_filter_chunked_decode(liVRequest *vr, liChunkQueue *out, liChunkQueue *in, liFilterChunkedDecodeState *state) {
liChunkParserCtx ctx;
gchar *p = NULL, *pe = NULL;
gchar c;
int digit;
li_chunk_parser_init(&ctx, in);
li_chunk_parser_prepare(&ctx);
for (;;) {
/* 0: start new chunklen, 1: reading chunklen, 2: found \r, 3: copying content, 4: found \r,
* 10: wait for \r\n\r\n, 11: wait for \n\r\n, 12: wait for \r\n, 13: wait for \n, 14: eof,
* 20: error
*/
switch (state->parse_state) {
case 0:
state->cur_chunklen = -1;
li_chunk_parser_prepare(&ctx);
state->parse_state = 1;
break;
case 1:
read_char(c);
li_chunk_parser_done(&ctx, 1);
digit = -1;
if (c >= '0' && c <= '9') {
digit = c - '0';
} else if (c >= 'a' && c <= 'f') {
digit = c - 'a' + 10;
} else if (c >= 'A' && c >= 'F') {
digit = c - 'A' + 10;
} else if (c == '\r') {
if (state->cur_chunklen == -1) {
state->parse_state = 20;
} else {
state->parse_state = 2;
}
} else {
state->parse_state = 20;
}
if (digit >= 0) {
if (state->cur_chunklen < 0) {
state->cur_chunklen = digit;
} else {
if ((G_MAXINT64 - digit) / 16 < state->cur_chunklen) {
state->parse_state = 20; /* overflow */
} else {
state->cur_chunklen = 16 * state->cur_chunklen + digit;
}
}
}
break;
case 2:
read_char(c);
li_chunk_parser_done(&ctx, 1);
if (c == '\n') {
li_chunkqueue_skip(in, ctx.bytes_in);
li_chunk_parser_reset(&ctx); p = NULL;
if (state->cur_chunklen > 0) {
state->parse_state = 3;
} else {
li_chunk_parser_prepare(&ctx);
state->parse_state = 12;
}
} else {
state->parse_state = 20;
}
break;
case 3:
if (state->cur_chunklen != 0) {
state->cur_chunklen -= li_chunkqueue_steal_len(out, in, state->cur_chunklen);
}
if (state->cur_chunklen == 0) {
li_chunk_parser_prepare(&ctx);
read_char(c);
li_chunk_parser_done(&ctx, 1);
if (c == '\r') {
state->parse_state = 4;
} else {
state->parse_state = 20;
}
} else {
/* wait for more data for the current chunk */
return TRUE;
}
break;
case 4:
read_char(c);
li_chunk_parser_done(&ctx, 1);
if (c == '\n') {
li_chunkqueue_skip(in, ctx.bytes_in);
li_chunk_parser_reset(&ctx); p = NULL;
state->parse_state = 0;
} else {
state->parse_state = 20;
}
break;
case 10: /* \r\n\r\n */
read_char(c);
li_chunk_parser_done(&ctx, 1);
state->parse_state = (c == '\r') ? 11 : 10;
break;
case 11: /* \n\r\n */
read_char(c);
li_chunk_parser_done(&ctx, 1);
state->parse_state = (c == '\n') ? 12 : 10;
break;
case 12: /* \r\n */
read_char(c);
li_chunk_parser_done(&ctx, 1);
state->parse_state = (c == '\r') ? 13 : 10;
break;
case 13: /* \n */
read_char(c);
li_chunk_parser_done(&ctx, 1);
state->parse_state = (c == '\n') ? 14 : 10;
break;
case 14:
out->is_closed = TRUE;
goto leave;
case 20:
goto error;
}
}
leave:
li_chunkqueue_skip(in, ctx.bytes_in);
return TRUE;
error:
out->is_closed = TRUE;
li_chunkqueue_skip_all(in);
state->parse_state = 20;
return FALSE;
}
static liHandlerResult cache_etag_filter_miss(liVRequest *vr, liFilter *f) {
cache_etag_file *cfile = (cache_etag_file*) f->param;
ssize_t res;
gchar *buf;
off_t buflen;
liChunkIter citer;
GError *err = NULL;
if (NULL == f->in) {
cache_etag_filter_free(vr, f);
/* didn't handle f->in->is_closed? abort forwarding */
if (!f->out->is_closed) li_stream_reset(&f->stream);
return LI_HANDLER_GO_ON;
}
if (NULL == cfile) goto forward;
if (f->in->length > 0) {
citer = li_chunkqueue_iter(f->in);
if (LI_HANDLER_GO_ON != li_chunkiter_read(citer, 0, 64*1024, &buf, &buflen, &err)) {
if (NULL != err) {
if (NULL != vr) VR_ERROR(vr, "Couldn't read data from chunkqueue: %s", err->message);
g_error_free(err);
} else {
if (NULL != vr) VR_ERROR(vr, "%s", "Couldn't read data from chunkqueue");
}
cache_etag_filter_free(vr, f);
goto forward;
}
res = write(cfile->fd, buf, buflen);
if (res < 0) {
switch (errno) {
case EINTR:
case EAGAIN:
return LI_HANDLER_COMEBACK;
default:
if (NULL != vr) VR_ERROR(vr, "Couldn't write to temporary cache file '%s': %s",
cfile->tmpfilename->str, g_strerror(errno));
cache_etag_filter_free(vr, f);
goto forward;
}
} else {
if (!f->out->is_closed) {
li_chunkqueue_steal_len(f->out, f->in, res);
} else {
li_chunkqueue_skip(f->in, res);
}
}
}
if (0 == f->in->length && f->in->is_closed) {
f->out->is_closed = TRUE;
f->param = NULL;
cache_etag_file_finish(vr, cfile);
return LI_HANDLER_GO_ON;
}
return LI_HANDLER_GO_ON;
forward:
if (f->out->is_closed) {
li_chunkqueue_skip_all(f->in);
li_stream_disconnect(&f->stream);
} else {
li_chunkqueue_steal_all(f->out, f->in);
if (f->in->is_closed) f->out->is_closed = f->in->is_closed;
}
return LI_HANDLER_GO_ON;
}