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#include <ngx_config.h>
#include <ngx_core.h>
#include <ngx_event.h>
#include <ngx_http.h>
static void ngx_http_read_client_request_body_handler(ngx_event_t *rev);
int ngx_http_read_client_request_body(ngx_http_request_t *r,
int request_buffer_size)
{
ssize_t size;
ngx_hunk_t *h;
ngx_chain_t *cl;
size = r->header_in->last - r->header_in->pos;
if (size) {
ngx_test_null(h, ngx_calloc_hunk(r->pool),
NGX_HTTP_INTERNAL_SERVER_ERROR);
h->type = NGX_HUNK_IN_MEMORY|NGX_HUNK_TEMP;
h->start = h->pos = r->header_in->pos;
h->end = h->last = r->header_in->last;
ngx_alloc_link_and_set_hunk(r->request_hunks, h, r->pool,
NGX_HTTP_INTERNAL_SERVER_ERROR);
if (size >= r->headers_in.content_length_n) {
r->header_in->pos += r->headers_in.content_length_n;
return NGX_OK;
}
r->header_in->pos = r->header_in->last;
}
r->request_body_len = r->headers_in.content_length_n - size;
if (r->request_body_len < request_buffer_size + (request_buffer_size >> 2))
{
size = r->request_body_len;
} else {
size = request_buffer_size;
}
ngx_test_null(r->request_body_hunk, ngx_create_temp_hunk(r->pool, size),
NGX_HTTP_INTERNAL_SERVER_ERROR);
r->connection->read->event_handler =
ngx_http_read_client_request_body_handler;
ngx_http_read_client_request_body_handler(r->connection->read);
ngx_alloc_link_and_set_hunk(cl, r->request_body_hunk, r->pool,
NGX_HTTP_INTERNAL_SERVER_ERROR);
if (r->request_hunks) {
r->request_hunks->next = cl;
} else {
r->request_hunks = cl;
}
if (r->request_body_len) {
return NGX_AGAIN;
}
return NGX_OK;
}
static void ngx_http_read_client_request_body_handler(ngx_event_t *rev)
{
ssize_t n, size;
ngx_hunk_t *h;
ngx_connection_t *c;
ngx_http_request_t *r;
ngx_http_core_loc_conf_t *clcf;
c = rev->data;
r = c->data;
if (r->request_body_hunk->end - r->request_body_hunk->last == 0) {
n = ngx_write_chain_to_temp_file(r->temp_file,
r->request_hunks->next ? r->request_hunks->next:
r->request_hunks);
/* TODO: n == 0 or not complete and level event */
if (n == NGX_ERROR) {
ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
return;
}
r->temp_file->offset += n;
r->request_body_hunk->pos = r->request_body_hunk->start;
r->request_body_hunk->last = r->request_body_hunk->start;
}
size = r->request_body_hunk->end - r->request_body_hunk->last;
if (size > r->request_body_len) {
size = r->request_body_len;
}
n = ngx_recv(c, r->request_body_hunk->last, size);
if (n == NGX_AGAIN) {
clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
ngx_add_timer(rev, clcf->client_body_timeout);
if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
}
return;
}
if (n == 0) {
ngx_log_error(NGX_LOG_INFO, c->log, 0,
"client closed prematurely connection");
}
if (n == 0 || n == NGX_ERROR) {
ngx_http_finalize_request(r, NGX_HTTP_BAD_REQUEST);
return;
}
r->request_body_hunk->last += n;
r->request_body_len -= n;
if (r->request_body_len) {
return;
}
if (r->temp_file->file.fd != NGX_INVALID_FILE) {
/* save the last part */
n = ngx_write_chain_to_temp_file(r->temp_file,
r->request_hunks->next ? r->request_hunks->next:
r->request_hunks);
/* TODO: n == 0 or not complete and level event */
if (n == NGX_ERROR) {
ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
return;
}
h = ngx_calloc_hunk(r->pool);
if (h == NULL) {
ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
return;
}
h->type = NGX_HUNK_FILE;
h->file_pos = 0;
h->file_last = r->temp_file->file.offset;
h->file = &r->temp_file->file;
if (r->request_hunks->next) {
r->request_hunks->next->hunk = h;
} else {
r->request_hunks->hunk = h;
}
}
r->request_body_handler(r->data);
}
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