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[njs] HTTP: introduced raw headers API.

Dmitry Volyntsev
May 08, 2020 12:38PM
details: https://hg.nginx.org/njs/rev/92838d964b19
branches:
changeset: 1388:92838d964b19
user: Dmitry Volyntsev <xeioex@nginx.com>
date: Fri May 08 15:52:40 2020 +0000
description:
HTTP: introduced raw headers API.

1) r.rawHeadersIn returns an array of key-value pairs exactly as they
were received from the client.

2) r.rawHeadersOut returns an array of key-value pairs of respose
headers.

Header names are not lowercased, and duplicates are not merged.

diffstat:

nginx/ngx_http_js_module.c | 103 +++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 103 insertions(+), 0 deletions(-)

diffs (134 lines):

diff -r 1268384be910 -r 92838d964b19 nginx/ngx_http_js_module.c
--- a/nginx/ngx_http_js_module.c Fri May 08 12:02:32 2020 +0000
+++ b/nginx/ngx_http_js_module.c Fri May 08 15:52:40 2020 +0000
@@ -84,6 +84,9 @@ static njs_int_t ngx_http_js_ext_keys_he
njs_value_t *keys, ngx_list_t *headers);
static ngx_table_elt_t *ngx_http_js_get_header(ngx_list_part_t *part,
u_char *data, size_t len);
+static njs_int_t ngx_http_js_ext_raw_header(njs_vm_t *vm,
+ njs_object_prop_t *prop, njs_value_t *value, njs_value_t *setval,
+ njs_value_t *retval);
static njs_int_t ngx_http_js_ext_header_out(njs_vm_t *vm,
njs_object_prop_t *prop, njs_value_t *value, njs_value_t *setval,
njs_value_t *retval);
@@ -354,6 +357,15 @@ static njs_external_t ngx_http_js_ext_r
},

{
+ .flags = NJS_EXTERN_PROPERTY,
+ .name.string = njs_str("rawHeadersIn"),
+ .u.property = {
+ .handler = ngx_http_js_ext_raw_header,
+ .magic32 = 0,
+ }
+ },
+
+ {
.flags = NJS_EXTERN_OBJECT,
.name.string = njs_str("args"),
.enumerable = 1,
@@ -397,6 +409,15 @@ static njs_external_t ngx_http_js_ext_r
},

{
+ .flags = NJS_EXTERN_PROPERTY,
+ .name.string = njs_str("rawHeadersOut"),
+ .u.property = {
+ .handler = ngx_http_js_ext_raw_header,
+ .magic32 = 1,
+ }
+ },
+
+ {
.flags = NJS_EXTERN_METHOD,
.name.string = njs_str("subrequest"),
.writable = 1,
@@ -934,6 +955,88 @@ ngx_http_js_get_header(ngx_list_part_t *


static njs_int_t
+ngx_http_js_ext_raw_header(njs_vm_t *vm, njs_object_prop_t *prop,
+ njs_value_t *value, njs_value_t *setval, njs_value_t *retval)
+{
+ njs_int_t rc;
+ ngx_uint_t i;
+ njs_value_t *array, *elem;
+ ngx_list_part_t *part;
+ ngx_list_t *headers;
+ ngx_table_elt_t *header, *h;
+ ngx_http_request_t *r;
+
+ r = njs_vm_external(vm, value);
+ if (r == NULL) {
+ njs_value_undefined_set(retval);
+ return NJS_DECLINED;
+ }
+
+ headers = (njs_vm_prop_magic32(prop) == 1) ? &r->headers_out.headers
+ : &r->headers_in.headers;
+
+ rc = njs_vm_array_alloc(vm, retval, 8);
+ if (rc != NJS_OK) {
+ return NJS_ERROR;
+ }
+
+ part = &headers->part;
+ header = part->elts;
+
+ for (i = 0; /* void */ ; i++) {
+
+ if (i >= part->nelts) {
+ if (part->next == NULL) {
+ break;
+ }
+
+ part = part->next;
+ header = part->elts;
+ i = 0;
+ }
+
+ h = &header[i];
+
+ if (h->hash == 0) {
+ continue;
+ }
+
+ array = njs_vm_array_push(vm, retval);
+ if (array == NULL) {
+ return NJS_ERROR;
+ }
+
+ rc = njs_vm_array_alloc(vm, array, 2);
+ if (rc != NJS_OK) {
+ return NJS_ERROR;
+ }
+
+ elem = njs_vm_array_push(vm, array);
+ if (elem == NULL) {
+ return NJS_ERROR;
+ }
+
+ rc = njs_vm_value_string_set(vm, elem, h->key.data, h->key.len);
+ if (rc != NJS_OK) {
+ return NJS_ERROR;
+ }
+
+ elem = njs_vm_array_push(vm, array);
+ if (elem == NULL) {
+ return NJS_ERROR;
+ }
+
+ rc = njs_vm_value_string_set(vm, elem, h->value.data, h->value.len);
+ if (rc != NJS_OK) {
+ return NJS_ERROR;
+ }
+ }
+
+ return NJS_OK;
+}
+
+
+static njs_int_t
ngx_http_js_ext_header_out(njs_vm_t *vm, njs_object_prop_t *prop,
njs_value_t *value, njs_value_t *setval, njs_value_t *retval)
{
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Subject Author Views Posted

[njs] HTTP: introduced raw headers API.

Dmitry Volyntsev 111 May 08, 2020 12:38PM



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