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handle cookies on redirection manually

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This commit is contained in:
Pierre Tachoire
2025-08-14 17:30:45 +02:00
parent 38a0b6905e
commit 0e2a3d8009
2 changed files with 48 additions and 19 deletions
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62
src/http/Client.zig
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@@ -24,6 +24,8 @@ pub const Headers = Http.Headers;
const Notification = @import("../notification.zig").Notification;
const storage = @import("../browser/storage/storage.zig");
const urlStitch = @import("../url.zig").URL.stitch;
const c = Http.c;
const Allocator = std.mem.Allocator;
@@ -321,8 +323,6 @@ fn makeRequest(self: *Client, handle: *Handle, transfer: *Transfer) !void {
try errorCheck(c.curl_easy_setopt(easy, c.CURLOPT_HTTPHEADER, header_list.headers));
// Add cookies.
// Clear cookies from Curl's engine.
try errorCheck(c.curl_easy_setopt(easy, c.CURLOPT_COOKIELIST, "ALL"));
if (header_list.cookies) |cookies| {
try errorCheck(c.curl_easy_setopt(easy, c.CURLOPT_COOKIE, cookies));
}
@@ -595,6 +595,42 @@ pub const Transfer = struct {
self.deinit();
}
// redirectionCookies manages cookies during redirections handled by Curl.
// It sets the cookies from the current response to the cookie jar.
// It also immediately sets cookies for the following request.
fn redirectionCookies(arena: std.mem.Allocator, easy: *c.CURL, cookie_jar: *storage.CookieJar, origin: *const std.Uri) !void {
// retrieve cookies from the redirect's response.
var i: usize = 0;
while (true) {
const ct = getResponseHeader(easy, "set-cookie", i);
if (ct == null) break;
try cookie_jar.populateFromResponse(origin, ct.?.value);
i += 1;
if (i >= ct.?.amount) break;
}
// set cookies for the following redirection's request.
const hlocation = getResponseHeader(easy, "location", 0);
if (hlocation == null) {
return error.LocationNotFound;
}
var baseurl: [*c]u8 = undefined;
try errorCheck(c.curl_easy_getinfo(easy, c.CURLINFO_EFFECTIVE_URL, &baseurl));
const url = try urlStitch(arena, hlocation.?.value, std.mem.span(baseurl), .{});
const uri = try std.Uri.parse(url);
var cookies: std.ArrayListUnmanaged(u8) = .{};
try cookie_jar.forRequest(&uri, cookies.writer(arena), .{
.is_http = true,
.is_navigation = true,
.origin_uri = origin,
});
try cookies.append(arena, 0); //null terminate
try errorCheck(c.curl_easy_setopt(easy, c.CURLOPT_COOKIE, @as([*c]const u8, @ptrCast(cookies.items.ptr))));
}
fn headerCallback(buffer: [*]const u8, header_count: usize, buf_len: usize, data: *anyopaque) callconv(.c) usize {
// libcurl should only ever emit 1 header at a time
std.debug.assert(header_count == 1);
@@ -611,18 +647,16 @@ pub const Transfer = struct {
if (transfer.response_header == null) {
if (transfer._redirecting and buf_len == 2) {
// retrieve cookies from the redirect's response.
var i: usize = 0;
while (true) {
const ct = getResponseHeader(easy, "set-cookie", i);
if (ct == null) break;
transfer.req.cookie_jar.populateFromResponse(&transfer.uri, ct.?.value) catch |err| {
log.err(.http, "set cookie", .{ .err = err, .req = transfer });
};
i += 1;
if (i >= ct.?.amount) break;
}
// parse and set cookies for the redirection.
redirectionCookies(
transfer.client.arena.allocator(),
easy,
transfer.req.cookie_jar,
&transfer.uri,
) catch |err| {
log.debug(.http, "redirection cookies", .{ .err = err });
return 0;
};
return buf_len;
}