static ngx_int_t
ngx_http_google_request_generater(ngx_http_request_t * r,
ngx_http_google_ctx_t * ctx)
{
ngx_uint_t i;
ngx_table_elt_t * tb;
ngx_table_elt_t ** ptr;
ngx_str_t * cookie = ngx_http_google_implode_kv(r, ctx->cookies, "; ");
if (!cookie) return NGX_ERROR;
if (!r->headers_in.cookies.nelts)
{
tb = ngx_list_push(&r->headers_in.headers);
if (!tb) return NGX_ERROR;
ngx_str_set(&tb->key, "Cookie");
tb->value = *cookie;
tb->hash = ngx_hash_key_lc(tb->key.data, tb->key.len);
} else {
ptr = r->headers_in.cookies.elts;
for (i = 0; i < r->headers_in.cookies.nelts; i++) {
ptr[i]->value = *cookie;
}
}
ngx_str_t * arg = ngx_http_google_implode_kv(r, ctx->args, "&");
if (!arg) return NGX_ERROR;
ctx->arg = arg;
if (!ctx->arg->len)
{
r->unparsed_uri = *ctx->uri;
} else {
ngx_str_t uri;
uri.len = ctx->uri->len + 1 + ctx->arg->len;
uri.data = ngx_pcalloc(r->pool, uri.len);
if (!uri.data) return NGX_ERROR;
ngx_snprintf(uri.data, uri.len, "%V?%V", ctx->uri, ctx->arg);
r->unparsed_uri = uri;
}
return NGX_OK;
}
static ngx_int_t
ngx_http_google_response_header_set_cookie(ngx_http_request_t * r,
ngx_http_google_ctx_t * ctx,
ngx_table_elt_t * tb)
{
ngx_array_t * kvs = ngx_http_google_explode_kv(r, &tb->value, ";");
if (!kvs) return NGX_ERROR;
ngx_uint_t i;
ngx_keyval_t * kv, * hd = kvs->elts;
for (i = 0; i < kvs->nelts; i++)
{
kv = hd + i;
if (!ngx_strncasecmp(kv->key.data, ctx->conf->data, ctx->conf->len))
{
if (ngx_http_google_response_header_set_cookie_conf(r, ctx, &kv->value)) {
return NGX_ERROR;
}
}
if (!ngx_strncasecmp(kv->key.data, (u_char *)"GOOGLE_ABUSE_EXEMPTION", 22))
{
if (ngx_http_google_response_header_set_cookie_exempt(r, ctx, kvs)) {
return NGX_ERROR;
}
}
if (!ngx_strncasecmp(kv->key.data, (u_char *)"domain", 6))
{
kv->value = *ctx->domain;
}
if (!ngx_strncasecmp(kv->key.data, (u_char *)"path", 4)) {
ngx_str_set(&kv->value, "/");
}
}
// unset this key
if (!kvs->nelts) {
tb->hash = 0; return NGX_OK;
}
ngx_str_t * set_cookie = ngx_http_google_implode_kv(r, kvs, "; ");
if (!set_cookie) return NGX_ERROR;
// reset set cookie
tb->value = *set_cookie;
return NGX_OK;
}
static ngx_int_t
ngx_http_google_response_header_set_cookie_conf(ngx_http_request_t * r,
ngx_http_google_ctx_t * ctx,
ngx_str_t * v)
{
if (ctx->type != ngx_http_google_type_main &&
ctx->type != ngx_http_google_type_scholar) return NGX_OK;
if (ctx->ncr) return NGX_OK;
ngx_uint_t i;
ngx_array_t * kvs = ngx_http_google_explode_kv(r, v, ":");
if (!kvs) return NGX_ERROR;
ngx_int_t nw = 0;
ngx_keyval_t * kv, * hd;
hd = kvs->elts;
for (i = 0; i < kvs->nelts; i++) {
kv = hd + i;
if (!ngx_strncasecmp(kv->key.data, (u_char *)"LD", 2)) {
if (ctx->lang->len) kv->value = *ctx->lang;
else {
ngx_str_set(&kv->value, "zh-CN");
}
}
if (!ngx_strncasecmp(kv->key.data, (u_char *)"NW", 2)) nw = 1;
}
if (!nw) {
kv = ngx_array_push(kvs);
if (!kv) return NGX_ERROR;
ngx_str_set(&kv->key, "NW");
ngx_str_set(&kv->value, "1");
}
// sort with length
ngx_sort(kvs->elts, kvs->nelts, sizeof(ngx_keyval_t),
ngx_http_google_response_header_sort_cookie_conf);
ngx_str_t * nv = ngx_http_google_implode_kv(r, kvs, ":");
if (!nv) return NGX_ERROR;
*v = *nv;
return NGX_OK;
}