mirror of
https://github.com/moparisthebest/curl
synced 2024-10-31 15:45:12 -04:00
vauth: Moved the Negotiate authentication code to the new vauth directory
Part 1 of 2 - Moved the SSPI based Negotiate authentication code.
This commit is contained in:
parent
65f972b2e8
commit
ad5e9bfd5d
@ -22,7 +22,9 @@
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LIB_VAUTH_CFILES = vauth/vauth.c vauth/cleartext.c vauth/cram.c \
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vauth/digest.c vauth/digest_sspi.c vauth/krb5_gssapi.c \
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vauth/krb5_sspi.c vauth/ntlm.c vauth/ntlm_sspi.c vauth/oauth2.c
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vauth/krb5_sspi.c vauth/ntlm.c vauth/ntlm_sspi.c vauth/oauth2.c \
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vauth/spnego_sspi.c
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LIB_VAUTH_HFILES = vauth/vauth.h vauth/digest.h vauth/ntlm.h
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@ -627,6 +627,7 @@ X_OBJS= \
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$(DIROBJ)\ntlm.obj \
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$(DIROBJ)\ntlm_sspi.obj \
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$(DIROBJ)\oauth2.obj \
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$(DIROBJ)\spnego_sspi.obj \
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$(DIROBJ)\vtls.obj \
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$(DIROBJ)\openssl.obj \
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$(DIROBJ)\strdup.obj \
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@ -54,6 +54,7 @@
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#include "curl_base64.h"
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#include "cookie.h"
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#include "strequal.h"
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#include "vauth/vauth.h"
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#include "vtls/vtls.h"
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#include "http_digest.h"
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#include "curl_ntlm.h"
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@ -33,10 +33,6 @@ CURLcode Curl_output_negotiate(struct connectdata *conn, bool proxy);
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void Curl_cleanup_negotiate(struct SessionHandle *data);
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#ifdef USE_WINDOWS_SSPI
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#define GSS_ERROR(status) (status & 0x80000000)
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#endif
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#endif /* USE_SPNEGO */
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#endif /* HEADER_CURL_HTTP_NEGOTIATE_H */
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@ -29,11 +29,8 @@
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#include "urldata.h"
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#include "sendf.h"
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#include "rawstr.h"
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#include "warnless.h"
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#include "curl_base64.h"
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#include "vauth/vauth.h"
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#include "http_negotiate.h"
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#include "curl_multibyte.h"
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#include "curl_printf.h"
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/* The last #include files should be: */
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@ -44,20 +41,13 @@ CURLcode Curl_input_negotiate(struct connectdata *conn, bool proxy,
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const char *header)
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{
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struct SessionHandle *data = conn->data;
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BYTE *input_token = NULL;
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SecBufferDesc out_buff_desc;
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SecBuffer out_sec_buff;
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SecBufferDesc in_buff_desc;
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SecBuffer in_sec_buff;
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SECURITY_STATUS status;
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unsigned long attrs;
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TimeStamp expiry; /* For Windows 9x compatibility of SSPI calls */
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size_t len = 0, input_token_len = 0;
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CURLcode result;
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size_t len;
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/* Point to the username and password */
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/* Point to the username, password, service and host */
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const char *userp;
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const char *passwdp;
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const char *service;
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const char *host;
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/* Point to the correct struct with this */
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struct negotiatedata *neg_ctx;
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@ -65,11 +55,15 @@ CURLcode Curl_input_negotiate(struct connectdata *conn, bool proxy,
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if(proxy) {
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userp = conn->proxyuser;
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passwdp = conn->proxypasswd;
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service = data->set.str[STRING_PROXY_SERVICE_NAME];
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host = conn->host.name;
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neg_ctx = &data->state.proxyneg;
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}
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else {
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userp = conn->user;
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passwdp = conn->passwd;
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service = data->set.str[STRING_SERVICE_NAME];
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host = conn->proxy.name;
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neg_ctx = &data->state.negotiate;
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}
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@ -80,43 +74,6 @@ CURLcode Curl_input_negotiate(struct connectdata *conn, bool proxy,
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if(!passwdp)
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passwdp = "";
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if(neg_ctx->context && neg_ctx->status == SEC_E_OK) {
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/* We finished successfully our part of authentication, but server
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* rejected it (since we're again here). Exit with an error since we
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* can't invent anything better */
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Curl_cleanup_negotiate(data);
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return CURLE_LOGIN_DENIED;
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}
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if(!neg_ctx->server_name) {
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/* Check proxy auth requested but no given proxy name */
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if(proxy && !conn->proxy.name)
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return CURLE_BAD_FUNCTION_ARGUMENT;
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/* Generate our SPN */
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neg_ctx->server_name = Curl_auth_build_spn(
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proxy ? data->set.str[STRING_PROXY_SERVICE_NAME] :
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data->set.str[STRING_SERVICE_NAME],
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proxy ? conn->proxy.name : conn->host.name);
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if(!neg_ctx->server_name)
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return CURLE_OUT_OF_MEMORY;
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}
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if(!neg_ctx->output_token) {
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PSecPkgInfo SecurityPackage;
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status = s_pSecFn->QuerySecurityPackageInfo((TCHAR *)
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TEXT(SP_NAME_NEGOTIATE),
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&SecurityPackage);
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if(status != SEC_E_OK)
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return CURLE_NOT_BUILT_IN;
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/* Allocate input and output buffers according to the max token size
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as indicated by the security package */
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neg_ctx->token_max = SecurityPackage->cbMaxToken;
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neg_ctx->output_token = malloc(neg_ctx->token_max);
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s_pSecFn->FreeContextBuffer(SecurityPackage);
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}
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/* Obtain the input token, if any */
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header += strlen("Negotiate");
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while(*header && ISSPACE(*header))
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@ -130,124 +87,28 @@ CURLcode Curl_input_negotiate(struct connectdata *conn, bool proxy,
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negotiation mechanisms */
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return CURLE_LOGIN_DENIED;
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}
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/* We have to acquire credentials and allocate memory for the context */
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neg_ctx->credentials = malloc(sizeof(CredHandle));
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neg_ctx->context = malloc(sizeof(CtxtHandle));
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if(!neg_ctx->credentials || !neg_ctx->context)
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return CURLE_OUT_OF_MEMORY;
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if(userp && *userp) {
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/* Populate our identity structure */
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result = Curl_create_sspi_identity(userp, passwdp, &neg_ctx->identity);
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if(result)
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return result;
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/* Allow proper cleanup of the identity structure */
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neg_ctx->p_identity = &neg_ctx->identity;
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}
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else
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/* Use the current Windows user */
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neg_ctx->p_identity = NULL;
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/* Acquire our credientials handle */
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neg_ctx->status =
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s_pSecFn->AcquireCredentialsHandle(NULL,
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(TCHAR *) TEXT(SP_NAME_NEGOTIATE),
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SECPKG_CRED_OUTBOUND, NULL,
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neg_ctx->p_identity, NULL, NULL,
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neg_ctx->credentials, &expiry);
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if(neg_ctx->status != SEC_E_OK)
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return CURLE_LOGIN_DENIED;
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}
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else {
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result = Curl_base64_decode(header,
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(unsigned char **)&input_token,
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&input_token_len);
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if(result)
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return result;
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if(!input_token_len) {
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infof(data,
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"Negotiate handshake failure (empty challenge message)\n");
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return CURLE_BAD_CONTENT_ENCODING;
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}
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}
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/* Setup the "output" security buffer */
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out_buff_desc.ulVersion = SECBUFFER_VERSION;
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out_buff_desc.cBuffers = 1;
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out_buff_desc.pBuffers = &out_sec_buff;
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out_sec_buff.BufferType = SECBUFFER_TOKEN;
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out_sec_buff.pvBuffer = neg_ctx->output_token;
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out_sec_buff.cbBuffer = curlx_uztoul(neg_ctx->token_max);
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/* Setup the "input" security buffer if present */
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if(input_token) {
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in_buff_desc.ulVersion = SECBUFFER_VERSION;
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in_buff_desc.cBuffers = 1;
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in_buff_desc.pBuffers = &in_sec_buff;
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in_sec_buff.BufferType = SECBUFFER_TOKEN;
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in_sec_buff.pvBuffer = input_token;
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in_sec_buff.cbBuffer = curlx_uztoul(input_token_len);
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}
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/* Generate our message */
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neg_ctx->status = s_pSecFn->InitializeSecurityContext(
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neg_ctx->credentials,
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input_token ? neg_ctx->context : NULL,
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neg_ctx->server_name,
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ISC_REQ_CONFIDENTIALITY,
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0,
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SECURITY_NATIVE_DREP,
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input_token ? &in_buff_desc : NULL,
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0,
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neg_ctx->context,
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&out_buff_desc,
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&attrs,
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&expiry);
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free(input_token);
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if(GSS_ERROR(neg_ctx->status))
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return CURLE_OUT_OF_MEMORY;
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if(neg_ctx->status == SEC_I_COMPLETE_NEEDED ||
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neg_ctx->status == SEC_I_COMPLETE_AND_CONTINUE) {
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neg_ctx->status = s_pSecFn->CompleteAuthToken(neg_ctx->context,
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&out_buff_desc);
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if(GSS_ERROR(neg_ctx->status))
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return CURLE_RECV_ERROR;
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}
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neg_ctx->output_token_length = out_sec_buff.cbBuffer;
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return CURLE_OK;
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/* Initilise the security context and decode our challenge */
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return Curl_auth_decode_spnego_message(data, userp, passwdp, service, host,
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header, neg_ctx);
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}
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CURLcode Curl_output_negotiate(struct connectdata *conn, bool proxy)
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{
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struct negotiatedata *neg_ctx = proxy?&conn->data->state.proxyneg:
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&conn->data->state.negotiate;
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char *encoded = NULL;
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char *base64 = NULL;
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size_t len = 0;
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char *userp;
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CURLcode result;
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result = Curl_base64_encode(conn->data,
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(const char*)neg_ctx->output_token,
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neg_ctx->output_token_length,
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&encoded, &len);
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result = Curl_auth_create_spnego_message(conn->data, neg_ctx, &base64, &len);
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if(result)
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return result;
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if(!len)
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return CURLE_REMOTE_ACCESS_DENIED;
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userp = aprintf("%sAuthorization: Negotiate %s\r\n", proxy ? "Proxy-" : "",
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encoded);
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base64);
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if(proxy) {
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Curl_safefree(conn->allocptr.proxyuserpwd);
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@ -258,43 +119,15 @@ CURLcode Curl_output_negotiate(struct connectdata *conn, bool proxy)
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conn->allocptr.userpwd = userp;
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}
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free(encoded);
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free(base64);
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return (userp == NULL) ? CURLE_OUT_OF_MEMORY : CURLE_OK;
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}
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static void cleanup(struct negotiatedata *neg_ctx)
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{
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/* Free our security context */
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if(neg_ctx->context) {
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s_pSecFn->DeleteSecurityContext(neg_ctx->context);
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free(neg_ctx->context);
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neg_ctx->context = NULL;
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}
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/* Free our credentials handle */
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if(neg_ctx->credentials) {
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s_pSecFn->FreeCredentialsHandle(neg_ctx->credentials);
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free(neg_ctx->credentials);
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neg_ctx->credentials = NULL;
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}
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/* Free our identity */
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Curl_sspi_free_identity(neg_ctx->p_identity);
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neg_ctx->p_identity = NULL;
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/* Free the SPN and output token */
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Curl_safefree(neg_ctx->server_name);
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Curl_safefree(neg_ctx->output_token);
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/* Reset any variables */
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neg_ctx->token_max = 0;
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}
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void Curl_cleanup_negotiate(struct SessionHandle *data)
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{
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cleanup(&data->state.negotiate);
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cleanup(&data->state.proxyneg);
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Curl_auth_spnego_cleanup(&data->state.negotiate);
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Curl_auth_spnego_cleanup(&data->state.proxyneg);
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}
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#endif /* !CURL_DISABLE_HTTP && USE_SPNEGO */
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297
lib/vauth/spnego_sspi.c
Normal file
297
lib/vauth/spnego_sspi.c
Normal file
@ -0,0 +1,297 @@
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/***************************************************************************
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* _ _ ____ _
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* Project ___| | | | _ \| |
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* / __| | | | |_) | |
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* | (__| |_| | _ <| |___
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* \___|\___/|_| \_\_____|
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*
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* Copyright (C) 1998 - 2016, Daniel Stenberg, <daniel@haxx.se>, et al.
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*
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* This software is licensed as described in the file COPYING, which
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* you should have received as part of this distribution. The terms
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* are also available at http://curl.haxx.se/docs/copyright.html.
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*
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* You may opt to use, copy, modify, merge, publish, distribute and/or sell
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* copies of the Software, and permit persons to whom the Software is
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* furnished to do so, under the terms of the COPYING file.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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* RFC4178 Simple and Protected GSS-API Negotiation Mechanism
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*
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***************************************************************************/
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#include "curl_setup.h"
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#if defined(USE_WINDOWS_SSPI) && defined(USE_SPNEGO)
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#include <curl/curl.h>
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#include "vauth/vauth.h"
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#include "urldata.h"
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#include "curl_base64.h"
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#include "warnless.h"
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#include "curl_multibyte.h"
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#include "sendf.h"
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/* The last #include files should be: */
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#include "curl_memory.h"
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#include "memdebug.h"
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/*
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* Curl_auth_decode_spnego_message()
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*
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* This is used to decode an already encoded SPNEGO (Negotiate) challenge
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* message.
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*
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* Parameters:
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*
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* data [in] - The session handle.
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* userp [in] - The user name in the format User or Domain\User.
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* passdwp [in] - The user's password.
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* service [in] - The service type such as www, smtp, pop or imap.
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* hostname [in] - The host name.
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* chlg64 [in] - The optional base64 encoded challenge message.
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* nego [in/out] - The Negotiate data struct being used and modified.
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*
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* Returns CURLE_OK on success.
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*/
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CURLcode Curl_auth_decode_spnego_message(struct SessionHandle *data,
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const char *user,
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const char *password,
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const char *service,
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const char *host,
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const char *chlg64,
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struct negotiatedata *nego)
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{
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CURLcode result = CURLE_OK;
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size_t chlglen = 0;
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unsigned char *chlg = NULL;
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PSecPkgInfo SecurityPackage;
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SecBuffer chlg_buf;
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SecBuffer resp_buf;
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SecBufferDesc chlg_desc;
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SecBufferDesc resp_desc;
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unsigned long attrs;
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TimeStamp expiry; /* For Windows 9x compatibility of SSPI calls */
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#if defined(CURL_DISABLE_VERBOSE_STRINGS)
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(void) data;
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#endif
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if(nego->context && nego->status == SEC_E_OK) {
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/* We finished successfully our part of authentication, but server
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* rejected it (since we're again here). Exit with an error since we
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* can't invent anything better */
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Curl_auth_spnego_cleanup(nego);
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return CURLE_LOGIN_DENIED;
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}
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/* Generate our SPN */
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if(!nego->server_name) {
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nego->server_name = Curl_auth_build_spn(service, host);
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if(!nego->server_name)
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return CURLE_OUT_OF_MEMORY;
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}
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if(!nego->output_token) {
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/* Query the security package for Negotiate */
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nego->status = s_pSecFn->QuerySecurityPackageInfo((TCHAR *)
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TEXT(SP_NAME_NEGOTIATE),
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&SecurityPackage);
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if(nego->status != SEC_E_OK)
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return CURLE_NOT_BUILT_IN;
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nego->token_max = SecurityPackage->cbMaxToken;
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/* Release the package buffer as it is not required anymore */
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s_pSecFn->FreeContextBuffer(SecurityPackage);
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/* Allocate our output buffer */
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nego->output_token = malloc(nego->token_max);
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if(!nego->output_token)
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return CURLE_OUT_OF_MEMORY;
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}
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if(!nego->credentials) {
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if(user && *user) {
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/* Populate our identity structure */
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result = Curl_create_sspi_identity(user, password, &nego->identity);
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if(result)
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return result;
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/* Allow proper cleanup of the identity structure */
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nego->p_identity = &nego->identity;
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}
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else
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/* Use the current Windows user */
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nego->p_identity = NULL;
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/* Allocate our credentials handle */
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nego->credentials = malloc(sizeof(CredHandle));
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if(!nego->credentials)
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return CURLE_OUT_OF_MEMORY;
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memset(nego->credentials, 0, sizeof(CredHandle));
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/* Acquire our credentials handle */
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nego->status =
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s_pSecFn->AcquireCredentialsHandle(NULL,
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(TCHAR *)TEXT(SP_NAME_NEGOTIATE),
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SECPKG_CRED_OUTBOUND, NULL,
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nego->p_identity, NULL, NULL,
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nego->credentials, &expiry);
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if(nego->status != SEC_E_OK)
|
||||
return CURLE_LOGIN_DENIED;
|
||||
|
||||
/* Allocate our new context handle */
|
||||
nego->context = malloc(sizeof(CtxtHandle));
|
||||
if(!nego->context)
|
||||
return CURLE_OUT_OF_MEMORY;
|
||||
|
||||
memset(nego->context, 0, sizeof(CtxtHandle));
|
||||
}
|
||||
|
||||
if(chlg64 && strlen(chlg64)) {
|
||||
/* Decode the base-64 encoded challenge message */
|
||||
if(*chlg64 != '=') {
|
||||
result = Curl_base64_decode(chlg64, &chlg, &chlglen);
|
||||
if(result)
|
||||
return result;
|
||||
}
|
||||
|
||||
/* Ensure we have a valid challenge message */
|
||||
if(!chlg) {
|
||||
infof(data, "SPNEGO handshake failure (empty challenge message)\n");
|
||||
|
||||
return CURLE_BAD_CONTENT_ENCODING;
|
||||
}
|
||||
|
||||
/* Setup the challenge "input" security buffer */
|
||||
chlg_desc.ulVersion = SECBUFFER_VERSION;
|
||||
chlg_desc.cBuffers = 1;
|
||||
chlg_desc.pBuffers = &chlg_buf;
|
||||
chlg_buf.BufferType = SECBUFFER_TOKEN;
|
||||
chlg_buf.pvBuffer = chlg;
|
||||
chlg_buf.cbBuffer = curlx_uztoul(chlglen);
|
||||
}
|
||||
|
||||
/* Setup the response "output" security buffer */
|
||||
resp_desc.ulVersion = SECBUFFER_VERSION;
|
||||
resp_desc.cBuffers = 1;
|
||||
resp_desc.pBuffers = &resp_buf;
|
||||
resp_buf.BufferType = SECBUFFER_TOKEN;
|
||||
resp_buf.pvBuffer = nego->output_token;
|
||||
resp_buf.cbBuffer = curlx_uztoul(nego->token_max);
|
||||
|
||||
/* Generate our challenge-response message */
|
||||
nego->status = s_pSecFn->InitializeSecurityContext(nego->credentials,
|
||||
chlg ? nego->context :
|
||||
NULL,
|
||||
nego->server_name,
|
||||
ISC_REQ_CONFIDENTIALITY,
|
||||
0, SECURITY_NATIVE_DREP,
|
||||
chlg ? &chlg_desc : NULL,
|
||||
0, nego->context,
|
||||
&resp_desc, &attrs,
|
||||
&expiry);
|
||||
|
||||
if(GSS_ERROR(nego->status)) {
|
||||
free(chlg);
|
||||
return CURLE_OUT_OF_MEMORY;
|
||||
}
|
||||
|
||||
if(nego->status == SEC_I_COMPLETE_NEEDED ||
|
||||
nego->status == SEC_I_COMPLETE_AND_CONTINUE) {
|
||||
nego->status = s_pSecFn->CompleteAuthToken(nego->context, &resp_desc);
|
||||
if(GSS_ERROR(nego->status)) {
|
||||
free(chlg);
|
||||
return CURLE_RECV_ERROR;
|
||||
}
|
||||
}
|
||||
|
||||
nego->output_token_length = resp_buf.cbBuffer;
|
||||
|
||||
/* Free the decoded challenge */
|
||||
free(chlg);
|
||||
|
||||
return result;
|
||||
}
|
||||
|
||||
/*
|
||||
* Curl_auth_create_spnego_message()
|
||||
*
|
||||
* This is used to generate an already encoded SPNEGO (Negotiate) response
|
||||
* message ready for sending to the recipient.
|
||||
*
|
||||
* Parameters:
|
||||
*
|
||||
* data [in] - The session handle.
|
||||
* nego [in/out] - The Negotiate data struct being used and modified.
|
||||
* outptr [in/out] - The address where a pointer to newly allocated memory
|
||||
* holding the result will be stored upon completion.
|
||||
* outlen [out] - The length of the output message.
|
||||
*
|
||||
* Returns CURLE_OK on success.
|
||||
*/
|
||||
CURLcode Curl_auth_create_spnego_message(struct SessionHandle *data,
|
||||
struct negotiatedata *nego,
|
||||
char **outptr, size_t *outlen)
|
||||
{
|
||||
CURLcode result;
|
||||
|
||||
/* Base64 encode the already generated response */
|
||||
result = Curl_base64_encode(data,
|
||||
(const char*) nego->output_token,
|
||||
nego->output_token_length,
|
||||
outptr, outlen);
|
||||
|
||||
if(result)
|
||||
return result;
|
||||
|
||||
if(!*outptr || !*outlen)
|
||||
return CURLE_REMOTE_ACCESS_DENIED;
|
||||
|
||||
return CURLE_OK;
|
||||
}
|
||||
|
||||
/*
|
||||
* Curl_auth_spnego_cleanup()
|
||||
*
|
||||
* This is used to clean up the SPNEGO (Negotiate) specific data.
|
||||
*
|
||||
* Parameters:
|
||||
*
|
||||
* nego [in/out] - The Negotiate data struct being cleaned up.
|
||||
*
|
||||
*/
|
||||
void Curl_auth_spnego_cleanup(struct negotiatedata* nego)
|
||||
{
|
||||
/* Free our security context */
|
||||
if(nego->context) {
|
||||
s_pSecFn->DeleteSecurityContext(nego->context);
|
||||
free(nego->context);
|
||||
nego->context = NULL;
|
||||
}
|
||||
|
||||
/* Free our credentials handle */
|
||||
if(nego->credentials) {
|
||||
s_pSecFn->FreeCredentialsHandle(nego->credentials);
|
||||
free(nego->credentials);
|
||||
nego->credentials = NULL;
|
||||
}
|
||||
|
||||
/* Free our identity */
|
||||
Curl_sspi_free_identity(nego->p_identity);
|
||||
nego->p_identity = NULL;
|
||||
|
||||
/* Free the SPN and output token */
|
||||
Curl_safefree(nego->server_name);
|
||||
Curl_safefree(nego->output_token);
|
||||
|
||||
/* Reset any variables */
|
||||
nego->token_max = 0;
|
||||
}
|
||||
|
||||
#endif /* USE_WINDOWS_SSPI && USE_SPNEGO */
|
@ -38,6 +38,14 @@ struct ntlmdata;
|
||||
struct kerberos5data;
|
||||
#endif
|
||||
|
||||
#if defined(USE_WINDOWS_SSPI) && defined(USE_SPNEGO)
|
||||
struct negotiatedata;
|
||||
#endif
|
||||
|
||||
#if defined(USE_WINDOWS_SSPI)
|
||||
#define GSS_ERROR(status) (status & 0x80000000)
|
||||
#endif
|
||||
|
||||
/* This is used to build a SPN string */
|
||||
#if !defined(USE_WINDOWS_SSPI)
|
||||
char *Curl_auth_build_spn(const char *service, const char *instance);
|
||||
@ -157,4 +165,26 @@ CURLcode Curl_auth_create_gssapi_security_message(struct SessionHandle *data,
|
||||
void Curl_auth_gssapi_cleanup(struct kerberos5data *krb5);
|
||||
#endif /* USE_KERBEROS5 */
|
||||
|
||||
#if defined(USE_WINDOWS_SSPI) && defined(USE_SPNEGO)
|
||||
/* This is used to decode a base64 encoded SPNEGO (Negotiate) challenge
|
||||
message */
|
||||
CURLcode Curl_auth_decode_spnego_message(struct SessionHandle *data,
|
||||
const char *user,
|
||||
const char *passwood,
|
||||
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 SessionHandle *data,
|
||||
struct negotiatedata *nego,
|
||||
char **outptr, size_t *outlen);
|
||||
|
||||
/* This is used to clean up the SPNEGO specifiec data */
|
||||
void Curl_auth_spnego_cleanup(struct negotiatedata* nego);
|
||||
|
||||
#endif /* USE_WINDOWS_SSPI && USE_SPNEGO */
|
||||
|
||||
#endif /* HEADER_CURL_VAUTH_H */
|
||||
|
@ -42,7 +42,7 @@ SOURCE \
|
||||
curl_sasl_sspi.c smb.c curl_endian.c curl_des.c \
|
||||
vauth/vauth.c vauth/cleartext.c vauth/cram.c vauth/digest.c \
|
||||
vauth/digest_sspi.c vauth/krb5_gssapi.c vauth/krb5_sspi.c \
|
||||
vauth/ntlm.c vauth/ntlm_sspi.c vauth/oauth2.c
|
||||
vauth/ntlm.c vauth/ntlm_sspi.c vauth/oauth2.c vauth/spnego_sspi.c
|
||||
|
||||
USERINCLUDE ../../../lib ../../../include/curl
|
||||
#ifdef ENABLE_SSL
|
||||
|
Loading…
Reference in New Issue
Block a user