Update networking layer w/ CURL and emscripten impl

2025-11-08 01:50:36 +11:00
parent a17925904d
commit f6874dc55a
4105 changed files with 694617 additions and 179 deletions
@@ -0,0 +1,357 @@
+#ifndef HEADER_CURL_VAUTH_H
+#define HEADER_CURL_VAUTH_H
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ \| |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
+ *                             \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) Steve Holme, <steve_holme@hotmail.com>.
+ *
+ * This software is licensed as described in the file COPYING, which
+ * you should have received as part of this distribution. The terms
+ * are also available at https://curl.se/docs/copyright.html.
+ *
+ * You may opt to use, copy, modify, merge, publish, distribute and/or sell
+ * copies of the Software, and permit persons to whom the Software is
+ * furnished to do so, under the terms of the COPYING file.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ * SPDX-License-Identifier: curl
+ *
+ ***************************************************************************/
+
+#include <curl/curl.h>
+
+#include "../bufref.h"
+#include "../curlx/dynbuf.h"
+
+struct Curl_easy;
+struct connectdata;
+
+#ifndef CURL_DISABLE_DIGEST_AUTH
+struct digestdata;
+#endif
+
+#ifdef USE_NTLM
+struct ntlmdata;
+#endif
+
+#if (defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI)) && defined(USE_SPNEGO)
+struct negotiatedata;
+#endif
+
+#ifdef USE_GSASL
+struct gsasldata;
+#endif
+
+#ifdef USE_WINDOWS_SSPI
+#include "../curl_sspi.h"
+#define GSS_ERROR(status) ((status) & 0x80000000)
+#endif
+
+/*
+ * Curl_auth_allowed_to_host() tells if authentication, cookies or other
+ * "sensitive data" can (still) be sent to this host.
+ */
+bool Curl_auth_allowed_to_host(struct Curl_easy *data);
+
+/* This is used to build an SPN string */
+#ifndef USE_WINDOWS_SSPI
+char *Curl_auth_build_spn(const char *service, const char *host,
+                          const char *realm);
+#else
+TCHAR *Curl_auth_build_spn(const char *service, const char *host,
+                           const char *realm);
+#endif
+
+/* This is used to test if the user contains a Windows domain name */
+bool Curl_auth_user_contains_domain(const char *user);
+
+/* This is used to generate a PLAIN cleartext message */
+CURLcode Curl_auth_create_plain_message(const char *authzid,
+                                        const char *authcid,
+                                        const char *passwd,
+                                        struct bufref *out);
+
+/* This is used to generate a LOGIN cleartext message */
+void Curl_auth_create_login_message(const char *value, struct bufref *out);
+
+/* This is used to generate an EXTERNAL cleartext message */
+void Curl_auth_create_external_message(const char *user, struct bufref *out);
+
+#ifndef CURL_DISABLE_DIGEST_AUTH
+/* This is used to generate a CRAM-MD5 response message */
+CURLcode Curl_auth_create_cram_md5_message(const struct bufref *chlg,
+                                           const char *userp,
+                                           const char *passwdp,
+                                           struct bufref *out);
+
+/* This is used to evaluate if DIGEST is supported */
+bool Curl_auth_is_digest_supported(void);
+
+/* This is used to generate a base64 encoded DIGEST-MD5 response message */
+CURLcode Curl_auth_create_digest_md5_message(struct Curl_easy *data,
+                                             const struct bufref *chlg,
+                                             const char *userp,
+                                             const char *passwdp,
+                                             const char *service,
+                                             struct bufref *out);
+
+/* This is used to decode an HTTP DIGEST challenge message */
+CURLcode Curl_auth_decode_digest_http_message(const char *chlg,
+                                              struct digestdata *digest);
+
+/* This is used to generate an HTTP DIGEST response message */
+CURLcode Curl_auth_create_digest_http_message(struct Curl_easy *data,
+                                              const char *userp,
+                                              const char *passwdp,
+                                              const unsigned char *request,
+                                              const unsigned char *uri,
+                                              struct digestdata *digest,
+                                              char **outptr, size_t *outlen);
+
+/* This is used to clean up the digest specific data */
+void Curl_auth_digest_cleanup(struct digestdata *digest);
+#else
+#define Curl_auth_is_digest_supported()       FALSE
+#endif /* !CURL_DISABLE_DIGEST_AUTH */
+
+#ifdef USE_GSASL
+
+/* meta key for storing GSASL meta at connection */
+#define CURL_META_GSASL_CONN   "meta:auth:gsasl:conn"
+
+#include <gsasl.h>
+struct gsasldata {
+  Gsasl *ctx;
+  Gsasl_session *client;
+};
+
+struct gsasldata *Curl_auth_gsasl_get(struct connectdata *conn);
+
+/* This is used to evaluate if MECH is supported by gsasl */
+bool Curl_auth_gsasl_is_supported(struct Curl_easy *data,
+                                  const char *mech,
+                                  struct gsasldata *gsasl);
+/* This is used to start a gsasl method */
+CURLcode Curl_auth_gsasl_start(struct Curl_easy *data,
+                               const char *userp,
+                               const char *passwdp,
+                               struct gsasldata *gsasl);
+
+/* This is used to process and generate a new SASL token */
+CURLcode Curl_auth_gsasl_token(struct Curl_easy *data,
+                               const struct bufref *chlg,
+                               struct gsasldata *gsasl,
+                               struct bufref *out);
+
+/* This is used to clean up the gsasl specific data */
+void Curl_auth_gsasl_cleanup(struct gsasldata *digest);
+#endif
+
+#ifdef USE_NTLM
+
+/* meta key for storing NTML meta at connection */
+#define CURL_META_NTLM_CONN   "meta:auth:ntml:conn"
+/* meta key for storing NTML-PROXY meta at connection */
+#define CURL_META_NTLM_PROXY_CONN   "meta:auth:ntml-proxy:conn"
+
+struct ntlmdata {
+#ifdef USE_WINDOWS_SSPI
+/* The sslContext is used for the Schannel bindings. The
+ * api is available on the Windows 7 SDK and later.
+ */
+#ifdef SECPKG_ATTR_ENDPOINT_BINDINGS
+  CtxtHandle *sslContext;
+#endif
+  CredHandle *credentials;
+  CtxtHandle *context;
+  SEC_WINNT_AUTH_IDENTITY identity;
+  SEC_WINNT_AUTH_IDENTITY *p_identity;
+  size_t token_max;
+  BYTE *output_token;
+  BYTE *input_token;
+  size_t input_token_len;
+  TCHAR *spn;
+#else
+  unsigned int flags;
+  unsigned char nonce[8];
+  unsigned int target_info_len;
+  void *target_info; /* TargetInfo received in the NTLM type-2 message */
+#endif
+};
+
+/* This is used to evaluate if NTLM is supported */
+bool Curl_auth_is_ntlm_supported(void);
+
+struct ntlmdata *Curl_auth_ntlm_get(struct connectdata *conn, bool proxy);
+void Curl_auth_ntlm_remove(struct connectdata *conn, bool proxy);
+
+/* This is used to clean up the NTLM specific data */
+void Curl_auth_cleanup_ntlm(struct ntlmdata *ntlm);
+
+/* This is used to generate a base64 encoded NTLM type-1 message */
+CURLcode Curl_auth_create_ntlm_type1_message(struct Curl_easy *data,
+                                             const char *userp,
+                                             const char *passwdp,
+                                             const char *service,
+                                             const char *host,
+                                             struct ntlmdata *ntlm,
+                                             struct bufref *out);
+
+/* This is used to decode a base64 encoded NTLM type-2 message */
+CURLcode Curl_auth_decode_ntlm_type2_message(struct Curl_easy *data,
+                                             const struct bufref *type2,
+                                             struct ntlmdata *ntlm);
+
+/* This is used to generate a base64 encoded NTLM type-3 message */
+CURLcode Curl_auth_create_ntlm_type3_message(struct Curl_easy *data,
+                                             const char *userp,
+                                             const char *passwdp,
+                                             struct ntlmdata *ntlm,
+                                             struct bufref *out);
+
+#else
+#define Curl_auth_is_ntlm_supported()     FALSE
+#endif /* USE_NTLM */
+
+/* This is used to generate a base64 encoded OAuth 2.0 message */
+CURLcode Curl_auth_create_oauth_bearer_message(const char *user,
+                                               const char *host,
+                                               const long port,
+                                               const char *bearer,
+                                               struct bufref *out);
+
+/* This is used to generate a base64 encoded XOAuth 2.0 message */
+CURLcode Curl_auth_create_xoauth_bearer_message(const char *user,
+                                                const char *bearer,
+                                                struct bufref *out);
+
+#ifdef USE_KERBEROS5
+
+#ifdef HAVE_GSSAPI
+# ifdef HAVE_GSSGNU
+#  include <gss.h>
+# else
+#  include <gssapi/gssapi.h>
+# endif
+#endif
+
+/* meta key for storing KRB5 meta at connection */
+#define CURL_META_KRB5_CONN   "meta:auth:krb5:conn"
+
+struct kerberos5data {
+#ifdef USE_WINDOWS_SSPI
+  CredHandle *credentials;
+  CtxtHandle *context;
+  TCHAR *spn;
+  SEC_WINNT_AUTH_IDENTITY identity;
+  SEC_WINNT_AUTH_IDENTITY *p_identity;
+  size_t token_max;
+  BYTE *output_token;
+#else
+  gss_ctx_id_t context;
+  gss_name_t spn;
+#endif
+};
+
+struct kerberos5data *Curl_auth_krb5_get(struct connectdata *conn);
+
+/* This is used to evaluate if GSSAPI (Kerberos V5) is supported */
+bool Curl_auth_is_gssapi_supported(void);
+
+/* This is used to generate a base64 encoded GSSAPI (Kerberos V5) user token
+   message */
+CURLcode Curl_auth_create_gssapi_user_message(struct Curl_easy *data,
+                                              const char *userp,
+                                              const char *passwdp,
+                                              const char *service,
+                                              const char *host,
+                                              const bool mutual,
+                                              const struct bufref *chlg,
+                                              struct kerberos5data *krb5,
+                                              struct bufref *out);
+
+/* This is used to generate a base64 encoded GSSAPI (Kerberos V5) security
+   token message */
+CURLcode Curl_auth_create_gssapi_security_message(struct Curl_easy *data,
+                                                  const char *authzid,
+                                                  const struct bufref *chlg,
+                                                  struct kerberos5data *krb5,
+                                                  struct bufref *out);
+
+/* This is used to clean up the GSSAPI specific data */
+void Curl_auth_cleanup_gssapi(struct kerberos5data *krb5);
+#else
+#define Curl_auth_is_gssapi_supported()       FALSE
+#endif /* USE_KERBEROS5 */
+
+#ifdef USE_SPNEGO
+
+bool Curl_auth_is_spnego_supported(void);
+
+/* meta key for storing NEGO meta at connection */
+#define CURL_META_NEGO_CONN         "meta:auth:nego:conn"
+/* meta key for storing NEGO PROXY meta at connection */
+#define CURL_META_NEGO_PROXY_CONN   "meta:auth:nego-proxy:conn"
+
+/* Struct used for Negotiate (SPNEGO) authentication */
+struct negotiatedata {
+#ifdef HAVE_GSSAPI
+  OM_uint32 status;
+  gss_ctx_id_t context;
+  gss_name_t spn;
+  gss_buffer_desc output_token;
+#ifdef CURL_GSSAPI_HAS_CHANNEL_BINDING
+  struct dynbuf channel_binding_data;
+#endif
+#else
+#ifdef USE_WINDOWS_SSPI
+#ifdef SECPKG_ATTR_ENDPOINT_BINDINGS
+  CtxtHandle *sslContext;
+#endif
+  SECURITY_STATUS status;
+  CredHandle *credentials;
+  CtxtHandle *context;
+  SEC_WINNT_AUTH_IDENTITY identity;
+  SEC_WINNT_AUTH_IDENTITY *p_identity;
+  TCHAR *spn;
+  size_t token_max;
+  BYTE *output_token;
+  size_t output_token_length;
+#endif
+#endif
+  BIT(noauthpersist);
+  BIT(havenoauthpersist);
+  BIT(havenegdata);
+  BIT(havemultiplerequests);
+};
+
+struct negotiatedata *
+Curl_auth_nego_get(struct connectdata *conn, bool proxy);
+
+/* This is used to decode a base64 encoded SPNEGO (Negotiate) challenge
+   message */
+CURLcode Curl_auth_decode_spnego_message(struct Curl_easy *data,
+                                         const char *user,
+                                         const char *password,
+                                         const char *service,
+                                         const char *host,
+                                         const char *chlg64,
+                                         struct negotiatedata *nego);
+
+/* This is used to generate a base64 encoded SPNEGO (Negotiate) response
+   message */
+CURLcode Curl_auth_create_spnego_message(struct negotiatedata *nego,
+                                         char **outptr, size_t *outlen);
+
+/* This is used to clean up the SPNEGO specific data */
+void Curl_auth_cleanup_spnego(struct negotiatedata *nego);
+
+#endif /* USE_SPNEGO */
+
+#endif /* HEADER_CURL_VAUTH_H */