feat(gemini-web): squash all features and fixes for gemini-web

2026-02-03 04:50:52 +08:00 · 2025-09-17 20:24:23 +08:00
parent 172f282e9e
commit e4dd22b260
25 changed files with 3710 additions and 6 deletions
--- a/internal/client/gemini-web/auth.go
+++ b/internal/client/gemini-web/auth.go
@@ -0,0 +1,228 @@
+package geminiwebapi
+
+import (
+	"crypto/tls"
+	"errors"
+	"io"
+	"net/http"
+	"net/http/cookiejar"
+	"net/url"
+	"os"
+	"path/filepath"
+	"regexp"
+	"strings"
+	"time"
+)
+
+type httpOptions struct {
+	ProxyURL        string
+	Insecure        bool
+	FollowRedirects bool
+}
+
+func newHTTPClient(opts httpOptions) *http.Client {
+	transport := &http.Transport{}
+	if opts.ProxyURL != "" {
+		if pu, err := url.Parse(opts.ProxyURL); err == nil {
+			transport.Proxy = http.ProxyURL(pu)
+		}
+	}
+	if opts.Insecure {
+		transport.TLSClientConfig = &tls.Config{InsecureSkipVerify: true}
+	}
+	jar, _ := cookiejar.New(nil)
+	client := &http.Client{Transport: transport, Timeout: 60 * time.Second, Jar: jar}
+	if !opts.FollowRedirects {
+		client.CheckRedirect = func(req *http.Request, via []*http.Request) error {
+			return http.ErrUseLastResponse
+		}
+	}
+	return client
+}
+
+func applyHeaders(req *http.Request, headers http.Header) {
+	for k, v := range headers {
+		for _, vv := range v {
+			req.Header.Add(k, vv)
+		}
+	}
+}
+
+func applyCookies(req *http.Request, cookies map[string]string) {
+	for k, v := range cookies {
+		req.AddCookie(&http.Cookie{Name: k, Value: v})
+	}
+}
+
+func sendInitRequest(cookies map[string]string, proxy string, insecure bool) (*http.Response, map[string]string, error) {
+	client := newHTTPClient(httpOptions{ProxyURL: proxy, Insecure: insecure, FollowRedirects: true})
+	req, _ := http.NewRequest(http.MethodGet, EndpointInit, nil)
+	applyHeaders(req, HeadersGemini)
+	applyCookies(req, cookies)
+	resp, err := client.Do(req)
+	if err != nil {
+		return nil, nil, err
+	}
+	if resp.StatusCode < 200 || resp.StatusCode >= 300 {
+		return resp, nil, &AuthError{Msg: resp.Status}
+	}
+	outCookies := map[string]string{}
+	for _, c := range resp.Cookies() {
+		outCookies[c.Name] = c.Value
+	}
+	for k, v := range cookies {
+		outCookies[k] = v
+	}
+	return resp, outCookies, nil
+}
+
+func getAccessToken(baseCookies map[string]string, proxy string, verbose bool, insecure bool) (string, map[string]string, error) {
+	// Warm-up google.com to gain extra cookies (NID, etc.) and capture them.
+	extraCookies := map[string]string{}
+	{
+		client := newHTTPClient(httpOptions{ProxyURL: proxy, Insecure: insecure, FollowRedirects: true})
+		req, _ := http.NewRequest(http.MethodGet, EndpointGoogle, nil)
+		resp, _ := client.Do(req)
+		if resp != nil {
+			if u, err := url.Parse(EndpointGoogle); err == nil {
+				for _, c := range client.Jar.Cookies(u) {
+					extraCookies[c.Name] = c.Value
+				}
+			}
+			_ = resp.Body.Close()
+		}
+	}
+
+	trySets := make([]map[string]string, 0, 8)
+
+	if v1, ok1 := baseCookies["__Secure-1PSID"]; ok1 {
+		if v2, ok2 := baseCookies["__Secure-1PSIDTS"]; ok2 {
+			merged := map[string]string{"__Secure-1PSID": v1, "__Secure-1PSIDTS": v2}
+			if nid, ok := baseCookies["NID"]; ok {
+				merged["NID"] = nid
+			}
+			trySets = append(trySets, merged)
+		} else if verbose {
+			Debug("Skipping base cookies: __Secure-1PSIDTS missing")
+		}
+	}
+
+	cacheDir := "temp"
+	_ = os.MkdirAll(cacheDir, 0o755)
+	if v1, ok1 := baseCookies["__Secure-1PSID"]; ok1 {
+		cacheFile := filepath.Join(cacheDir, ".cached_1psidts_"+v1+".txt")
+		if b, err := os.ReadFile(cacheFile); err == nil {
+			cv := strings.TrimSpace(string(b))
+			if cv != "" {
+				merged := map[string]string{"__Secure-1PSID": v1, "__Secure-1PSIDTS": cv}
+				trySets = append(trySets, merged)
+			}
+		}
+	}
+
+	if len(extraCookies) > 0 {
+		trySets = append(trySets, extraCookies)
+	}
+
+	reToken := regexp.MustCompile(`"SNlM0e":"([^"]+)"`)
+
+	for _, cookies := range trySets {
+		resp, mergedCookies, err := sendInitRequest(cookies, proxy, insecure)
+		if err != nil {
+			if verbose {
+				Warning("Failed init request: %v", err)
+			}
+			continue
+		}
+		body, err := io.ReadAll(resp.Body)
+		_ = resp.Body.Close()
+		if err != nil {
+			return "", nil, err
+		}
+		matches := reToken.FindStringSubmatch(string(body))
+		if len(matches) >= 2 {
+			token := matches[1]
+			if verbose {
+				Success("Gemini access token acquired.")
+			}
+			return token, mergedCookies, nil
+		}
+	}
+	return "", nil, &AuthError{Msg: "Failed to retrieve token."}
+}
+
+// rotate1psidts refreshes __Secure-1PSIDTS and caches it locally.
+func rotate1psidts(cookies map[string]string, proxy string, insecure bool) (string, error) {
+	psid, ok := cookies["__Secure-1PSID"]
+	if !ok {
+		return "", &AuthError{Msg: "__Secure-1PSID missing"}
+	}
+
+	cacheDir := "temp"
+	_ = os.MkdirAll(cacheDir, 0o755)
+	cacheFile := filepath.Join(cacheDir, ".cached_1psidts_"+psid+".txt")
+
+	if st, err := os.Stat(cacheFile); err == nil {
+		if time.Since(st.ModTime()) <= time.Minute {
+			if b, err := os.ReadFile(cacheFile); err == nil {
+				v := strings.TrimSpace(string(b))
+				if v != "" {
+					return v, nil
+				}
+			}
+		}
+	}
+
+	tr := &http.Transport{}
+	if proxy != "" {
+		if pu, err := url.Parse(proxy); err == nil {
+			tr.Proxy = http.ProxyURL(pu)
+		}
+	}
+	if insecure {
+		tr.TLSClientConfig = &tls.Config{InsecureSkipVerify: true}
+	}
+	client := &http.Client{Transport: tr, Timeout: 60 * time.Second}
+
+	req, _ := http.NewRequest(http.MethodPost, EndpointRotateCookies, io.NopCloser(stringsReader("[000,\"-0000000000000000000\"]")))
+	applyHeaders(req, HeadersRotateCookies)
+	applyCookies(req, cookies)
+
+	resp, err := client.Do(req)
+	if err != nil {
+		return "", err
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode == http.StatusUnauthorized {
+		return "", &AuthError{Msg: "unauthorized"}
+	}
+	if resp.StatusCode < 200 || resp.StatusCode >= 300 {
+		return "", errors.New(resp.Status)
+	}
+
+	for _, c := range resp.Cookies() {
+		if c.Name == "__Secure-1PSIDTS" {
+			_ = os.WriteFile(cacheFile, []byte(c.Value), 0o644)
+			return c.Value, nil
+		}
+	}
+	return "", nil
+}
+
+// Minimal reader helpers to avoid importing strings everywhere.
+type constReader struct {
+	s string
+	i int
+}
+
+func (r *constReader) Read(p []byte) (int, error) {
+	if r.i >= len(r.s) {
+		return 0, io.EOF
+	}
+	n := copy(p, r.s[r.i:])
+	r.i += n
+	return n, nil
+}
+
+func stringsReader(s string) io.Reader { return &constReader{s: s} }