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fix range in $r->sendfile

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This commit is contained in:
Igor Sysoev 2006-12-28 20:55:25 +00:00
parent c49d3ec7d4
commit 0e8fc7a6b4
1 changed files with 135 additions and 101 deletions
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236
src/http/modules/ngx_http_range_filter_module.c
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@ -336,6 +336,11 @@ ngx_http_range_header_filter(ngx_http_request_t *r)
r->headers_out.content_length_n = range->end - range->start;
if (r->headers_out.content_length) {
r->headers_out.content_length->hash = 0;
r->headers_out.content_length = NULL;
}
return ngx_http_next_header_filter(r);
}
@ -441,133 +446,86 @@ ngx_http_range_header_filter(ngx_http_request_t *r)
}
r->headers_out.content_length_n = len;
r->headers_out.content_length = NULL;
if (r->headers_out.content_length) {
r->headers_out.content_length->hash = 0;
r->headers_out.content_length = NULL;
}
return ngx_http_next_header_filter(r);
}
/*
* TODO:
* buffer or buffers is in memory
* range or ranges are overlapped in buffers
*/
static ngx_int_t
ngx_http_range_body_filter(ngx_http_request_t *r, ngx_chain_t *in)
{
ngx_uint_t i;
ngx_buf_t *b;
ngx_buf_t *b, *buf;
ngx_chain_t *out, *hcl, *rcl, *dcl, **ll;
ngx_http_range_t *range;
ngx_http_range_filter_ctx_t *ctx;
if (r->headers_out.ranges.nelts == 0) {
if (in == NULL || r->headers_out.ranges.nelts == 0) {
return ngx_http_next_body_filter(r, in);
}
range = r->headers_out.ranges.elts;
buf = in->buf;
if (!buf->in_file) {
goto in_memory;
}
if (!buf->last_buf) {
for (i = 0; i < r->headers_out.ranges.nelts; i++) {
if (buf->file_pos > range[i].start
|| buf->file_last < range[i].end)
{
goto overlapped;
}
}
}
/*
* the optimized version for the static files only
* that are passed in the single file buf
* that are passed in the single file buffer
*/
if (in && in->buf->in_file && in->buf->last_buf) {
range = r->headers_out.ranges.elts;
if (r->headers_out.ranges.nelts == 1) {
if (r->headers_out.ranges.nelts == 1) {
in->buf->file_pos = range->start;
in->buf->file_last = range->end;
buf->file_pos = range->start;
buf->file_last = range->end;
return ngx_http_next_body_filter(r, in);
}
return ngx_http_next_body_filter(r, in);
}
ctx = ngx_http_get_module_ctx(r, ngx_http_range_body_filter_module);
ll = &out;
ctx = ngx_http_get_module_ctx(r, ngx_http_range_body_filter_module);
ll = &out;
for (i = 0; i < r->headers_out.ranges.nelts; i++) {
for (i = 0; i < r->headers_out.ranges.nelts; i++) {
/*
* The boundary header of the range:
* CRLF
* "--0123456789" CRLF
* "Content-Type: image/jpeg" CRLF
* "Content-Range: bytes "
*/
b = ngx_calloc_buf(r->pool);
if (b == NULL) {
return NGX_ERROR;
}
b->memory = 1;
b->pos = ctx->boundary_header.data;
b->last = ctx->boundary_header.data + ctx->boundary_header.len;
hcl = ngx_alloc_chain_link(r->pool);
if (hcl == NULL) {
return NGX_ERROR;
}
hcl->buf = b;
/* "SSSS-EEEE/TTTT" CRLF CRLF */
b = ngx_calloc_buf(r->pool);
if (b == NULL) {
return NGX_ERROR;
}
b->temporary = 1;
b->pos = range[i].content_range.data;
b->last = range[i].content_range.data + range[i].content_range.len;
rcl = ngx_alloc_chain_link(r->pool);
if (rcl == NULL) {
return NGX_ERROR;
}
rcl->buf = b;
/* the range data */
b = ngx_calloc_buf(r->pool);
if (b == NULL) {
return NGX_ERROR;
}
b->in_file = 1;
b->file_pos = range[i].start;
b->file_last = range[i].end;
b->file = in->buf->file;
dcl = ngx_alloc_chain_link(r->pool);
if (dcl == NULL) {
return NGX_ERROR;
}
dcl->buf = b;
*ll = hcl;
hcl->next = rcl;
rcl->next = dcl;
ll = &dcl->next;
}
/* the last boundary CRLF "--0123456789--" CRLF */
/*
* The boundary header of the range:
* CRLF
* "--0123456789" CRLF
* "Content-Type: image/jpeg" CRLF
* "Content-Range: bytes "
*/
b = ngx_calloc_buf(r->pool);
if (b == NULL) {
return NGX_ERROR;
}
b->temporary = 1;
b->last_buf = 1;
b->pos = ngx_palloc(r->pool, sizeof(CRLF "--") - 1 + NGX_ATOMIC_T_LEN
+ sizeof("--" CRLF) - 1);
if (b->pos == NULL) {
return NGX_ERROR;
}
b->last = ngx_cpymem(b->pos, ctx->boundary_header.data, 4 + 10);
*b->last++ = '-'; *b->last++ = '-';
*b->last++ = CR; *b->last++ = LF;
b->memory = 1;
b->pos = ctx->boundary_header.data;
b->last = ctx->boundary_header.data + ctx->boundary_header.len;
hcl = ngx_alloc_chain_link(r->pool);
if (hcl == NULL) {
@ -575,16 +533,92 @@ ngx_http_range_body_filter(ngx_http_request_t *r, ngx_chain_t *in)
}
hcl->buf = b;
hcl->next = NULL;
/* "SSSS-EEEE/TTTT" CRLF CRLF */
b = ngx_calloc_buf(r->pool);
if (b == NULL) {
return NGX_ERROR;
}
b->temporary = 1;
b->pos = range[i].content_range.data;
b->last = range[i].content_range.data + range[i].content_range.len;
rcl = ngx_alloc_chain_link(r->pool);
if (rcl == NULL) {
return NGX_ERROR;
}
rcl->buf = b;
/* the range data */
b = ngx_calloc_buf(r->pool);
if (b == NULL) {
return NGX_ERROR;
}
b->in_file = 1;
b->file_pos = range[i].start;
b->file_last = range[i].end;
b->file = buf->file;
dcl = ngx_alloc_chain_link(r->pool);
if (dcl == NULL) {
return NGX_ERROR;
}
dcl->buf = b;
*ll = hcl;
return ngx_http_next_body_filter(r, out);
hcl->next = rcl;
rcl->next = dcl;
ll = &dcl->next;
}
/* TODO: alert */
/* the last boundary CRLF "--0123456789--" CRLF */
return ngx_http_next_body_filter(r, in);
b = ngx_calloc_buf(r->pool);
if (b == NULL) {
return NGX_ERROR;
}
b->temporary = 1;
b->last_buf = 1;
b->pos = ngx_palloc(r->pool, sizeof(CRLF "--") - 1 + NGX_ATOMIC_T_LEN
+ sizeof("--" CRLF) - 1);
if (b->pos == NULL) {
return NGX_ERROR;
}
b->last = ngx_cpymem(b->pos, ctx->boundary_header.data, 4 + 10);
*b->last++ = '-'; *b->last++ = '-';
*b->last++ = CR; *b->last++ = LF;
hcl = ngx_alloc_chain_link(r->pool);
if (hcl == NULL) {
return NGX_ERROR;
}
hcl->buf = b;
hcl->next = NULL;
*ll = hcl;
return ngx_http_next_body_filter(r, out);
in_memory:
overlapped:
ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0,
"range in memory buffer or in overlapped buffers");
return NGX_ERROR;
}