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Proxify images in API responses

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This commit is contained in:
Romain de Laage 2022-10-15 08:17:17 +02:00 • committed by Frédéric Guillot
parent 206be5ba15
commit 3f14d08095
12 changed files with 146 additions and 19 deletions
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37
proxy/proxy.go
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@ -5,6 +5,8 @@
package proxy // import "miniflux.app/proxy"
import (
"crypto/hmac"
"crypto/sha256"
"encoding/base64"
"net/url"
"path"
@ -16,13 +18,44 @@ import (
"miniflux.app/config"
)
// ProxifyURL generates an URL for a proxified resource.
// ProxifyURL generates a relative URL for a proxified resource.
func ProxifyURL(router *mux.Router, link string) string {
if link != "" {
proxyImageUrl := config.Opts.ProxyImageUrl()
if proxyImageUrl == "" {
return route.Path(router, "proxy", "encodedURL", base64.URLEncoding.EncodeToString([]byte(link)))
mac := hmac.New(sha256.New, config.Opts.ProxyPrivateKey())
mac.Write([]byte(link))
digest := mac.Sum(nil)
return route.Path(router, "proxy", "encodedDigest", base64.URLEncoding.EncodeToString(digest), "encodedURL", base64.URLEncoding.EncodeToString([]byte(link)))
}
proxyUrl, err := url.Parse(proxyImageUrl)
if err != nil {
return ""
}
proxyUrl.Path = path.Join(proxyUrl.Path, base64.URLEncoding.EncodeToString([]byte(link)))
return proxyUrl.String()
}
return ""
}
// AbsoluteProxifyURL generates an absolute URL for a proxified resource.
func AbsoluteProxifyURL(router *mux.Router, host, link string) string {
if link != "" {
proxyImageUrl := config.Opts.ProxyImageUrl()
if proxyImageUrl == "" {
mac := hmac.New(sha256.New, config.Opts.ProxyPrivateKey())
mac.Write([]byte(link))
digest := mac.Sum(nil)
path := route.Path(router, "proxy", "encodedDigest", base64.URLEncoding.EncodeToString(digest), "encodedURL", base64.URLEncoding.EncodeToString([]byte(link)))
if config.Opts.HTTPS {
return "https://" + host + path
} else {
return "http://" + host + path
}
}
proxyUrl, err := url.Parse(proxyImageUrl)