From 51358a3f403c90bd77b9836860c095098feac53a Mon Sep 17 00:00:00 2001 From: Steve Holme Date: Sat, 12 Sep 2015 13:30:58 +0100 Subject: vauth: Moved the DIGEST authentication code to the new vauth directory --- lib/curl_sasl_sspi.c | 481 --------------------------------------------------- 1 file changed, 481 deletions(-) (limited to 'lib/curl_sasl_sspi.c') diff --git a/lib/curl_sasl_sspi.c b/lib/curl_sasl_sspi.c index bdb1ea6d9..5ecab65ec 100644 --- a/lib/curl_sasl_sspi.c +++ b/lib/curl_sasl_sspi.c @@ -47,487 +47,6 @@ #include "curl_memory.h" #include "memdebug.h" -#if !defined(CURL_DISABLE_CRYPTO_AUTH) -/* - * Curl_sasl_create_digest_md5_message() - * - * This is used to generate an already encoded DIGEST-MD5 response message - * ready for sending to the recipient. - * - * Parameters: - * - * data [in] - The session handle. - * chlg64 [in] - The base64 encoded challenge message. - * userp [in] - The user name in the format User or Domain\User. - * passdwp [in] - The user's password. - * service [in] - The service type such as www, smtp, pop or imap. - * 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_sasl_create_digest_md5_message(struct SessionHandle *data, - const char *chlg64, - const char *userp, - const char *passwdp, - const char *service, - char **outptr, size_t *outlen) -{ - CURLcode result = CURLE_OK; - TCHAR *spn = NULL; - size_t chlglen = 0; - size_t token_max = 0; - unsigned char *input_token = NULL; - unsigned char *output_token = NULL; - CredHandle credentials; - CtxtHandle context; - PSecPkgInfo SecurityPackage; - SEC_WINNT_AUTH_IDENTITY identity; - SEC_WINNT_AUTH_IDENTITY *p_identity; - SecBuffer chlg_buf; - SecBuffer resp_buf; - SecBufferDesc chlg_desc; - SecBufferDesc resp_desc; - SECURITY_STATUS status; - unsigned long attrs; - TimeStamp expiry; /* For Windows 9x compatibility of SSPI calls */ - - /* Decode the base-64 encoded challenge message */ - if(strlen(chlg64) && *chlg64 != '=') { - result = Curl_base64_decode(chlg64, &input_token, &chlglen); - if(result) - return result; - } - - /* Ensure we have a valid challenge message */ - if(!input_token) { - infof(data, "DIGEST-MD5 handshake failure (empty challenge message)\n"); - - return CURLE_BAD_CONTENT_ENCODING; - } - - /* Query the security package for DigestSSP */ - status = s_pSecFn->QuerySecurityPackageInfo((TCHAR *) TEXT(SP_NAME_DIGEST), - &SecurityPackage); - if(status != SEC_E_OK) { - free(input_token); - - return CURLE_NOT_BUILT_IN; - } - - token_max = SecurityPackage->cbMaxToken; - - /* Release the package buffer as it is not required anymore */ - s_pSecFn->FreeContextBuffer(SecurityPackage); - - /* Allocate our response buffer */ - output_token = malloc(token_max); - if(!output_token) { - free(input_token); - - return CURLE_OUT_OF_MEMORY; - } - - /* Generate our SPN */ - spn = Curl_sasl_build_spn(service, data->easy_conn->host.name); - if(!spn) { - free(output_token); - free(input_token); - - return CURLE_OUT_OF_MEMORY; - } - - if(userp && *userp) { - /* Populate our identity structure */ - result = Curl_create_sspi_identity(userp, passwdp, &identity); - if(result) { - free(spn); - free(output_token); - free(input_token); - - return result; - } - - /* Allow proper cleanup of the identity structure */ - p_identity = &identity; - } - else - /* Use the current Windows user */ - p_identity = NULL; - - /* Acquire our credentials handle */ - status = s_pSecFn->AcquireCredentialsHandle(NULL, - (TCHAR *) TEXT(SP_NAME_DIGEST), - SECPKG_CRED_OUTBOUND, NULL, - p_identity, NULL, NULL, - &credentials, &expiry); - - if(status != SEC_E_OK) { - Curl_sspi_free_identity(p_identity); - free(spn); - free(output_token); - free(input_token); - - return CURLE_LOGIN_DENIED; - } - - /* 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 = input_token; - 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 = output_token; - resp_buf.cbBuffer = curlx_uztoul(token_max); - - /* Generate our response message */ - status = s_pSecFn->InitializeSecurityContext(&credentials, NULL, spn, - 0, 0, 0, &chlg_desc, 0, - &context, &resp_desc, &attrs, - &expiry); - - if(status == SEC_I_COMPLETE_NEEDED || - status == SEC_I_COMPLETE_AND_CONTINUE) - s_pSecFn->CompleteAuthToken(&credentials, &resp_desc); - else if(status != SEC_E_OK && status != SEC_I_CONTINUE_NEEDED) { - s_pSecFn->FreeCredentialsHandle(&credentials); - Curl_sspi_free_identity(p_identity); - free(spn); - free(output_token); - free(input_token); - - return CURLE_RECV_ERROR; - } - - /* Base64 encode the response */ - result = Curl_base64_encode(data, (char *) output_token, resp_buf.cbBuffer, - outptr, outlen); - - /* Free our handles */ - s_pSecFn->DeleteSecurityContext(&context); - s_pSecFn->FreeCredentialsHandle(&credentials); - - /* Free the identity structure */ - Curl_sspi_free_identity(p_identity); - - /* Free the SPN */ - free(spn); - - /* Free the response buffer */ - free(output_token); - - /* Free the decoded challenge message */ - free(input_token); - - return result; -} - -/* - * Curl_override_sspi_http_realm() - * - * This is used to populate the domain in a SSPI identity structure - * The realm is extracted from the challenge message and used as the - * domain if it is not already explicitly set. - * - * Parameters: - * - * chlg [in] - The challenge message. - * identity [in/out] - The identity structure. - * - * Returns CURLE_OK on success. - */ -CURLcode Curl_override_sspi_http_realm(const char *chlg, - SEC_WINNT_AUTH_IDENTITY *identity) -{ - xcharp_u domain, dup_domain; - - /* If domain is blank or unset, check challenge message for realm */ - if(!identity->Domain || !identity->DomainLength) { - for(;;) { - char value[DIGEST_MAX_VALUE_LENGTH]; - char content[DIGEST_MAX_CONTENT_LENGTH]; - - /* Pass all additional spaces here */ - while(*chlg && ISSPACE(*chlg)) - chlg++; - - /* Extract a value=content pair */ - if(Curl_sasl_digest_get_pair(chlg, value, content, &chlg)) { - if(Curl_raw_equal(value, "realm")) { - - /* Setup identity's domain and length */ - domain.tchar_ptr = Curl_convert_UTF8_to_tchar((char *)content); - if(!domain.tchar_ptr) - return CURLE_OUT_OF_MEMORY; - dup_domain.tchar_ptr = _tcsdup(domain.tchar_ptr); - if(!dup_domain.tchar_ptr) { - Curl_unicodefree(domain.tchar_ptr); - return CURLE_OUT_OF_MEMORY; - } - free(identity->Domain); - identity->Domain = dup_domain.tbyte_ptr; - identity->DomainLength = curlx_uztoul(_tcslen(dup_domain.tchar_ptr)); - dup_domain.tchar_ptr = NULL; - - Curl_unicodefree(domain.tchar_ptr); - } - else { - /* unknown specifier, ignore it! */ - } - } - else - break; /* we're done here */ - - /* Pass all additional spaces here */ - while(*chlg && ISSPACE(*chlg)) - chlg++; - - /* Allow the list to be comma-separated */ - if(',' == *chlg) - chlg++; - } - } - - return CURLE_OK; -} - -/* - * Curl_sasl_decode_digest_http_message() - * - * This is used to decode a HTTP DIGEST challenge message into the seperate - * attributes. - * - * Parameters: - * - * chlg [in] - The challenge message. - * digest [in/out] - The digest data struct being used and modified. - * - * Returns CURLE_OK on success. - */ -CURLcode Curl_sasl_decode_digest_http_message(const char *chlg, - struct digestdata *digest) -{ - size_t chlglen = strlen(chlg); - - /* We had an input token before and we got another one now. This means we - provided bad credentials in the previous request. */ - if(digest->input_token) - return CURLE_BAD_CONTENT_ENCODING; - - /* Simply store the challenge for use later */ - digest->input_token = (BYTE *) Curl_memdup(chlg, chlglen); - if(!digest->input_token) - return CURLE_OUT_OF_MEMORY; - - digest->input_token_len = chlglen; - - return CURLE_OK; -} - -/* - * Curl_sasl_create_digest_http_message() - * - * This is used to generate a HTTP DIGEST response message ready for sending - * to the recipient. - * - * Parameters: - * - * data [in] - The session handle. - * userp [in] - The user name in the format User or Domain\User. - * passdwp [in] - The user's password. - * request [in] - The HTTP request. - * uripath [in] - The path of the HTTP uri. - * digest [in/out] - The digest 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_sasl_create_digest_http_message(struct SessionHandle *data, - const char *userp, - const char *passwdp, - const unsigned char *request, - const unsigned char *uripath, - struct digestdata *digest, - char **outptr, size_t *outlen) -{ - size_t token_max; - CredHandle credentials; - CtxtHandle context; - char *resp; - BYTE *output_token; - PSecPkgInfo SecurityPackage; - SEC_WINNT_AUTH_IDENTITY identity; - SEC_WINNT_AUTH_IDENTITY *p_identity; - SecBuffer chlg_buf[3]; - SecBuffer resp_buf; - SecBufferDesc chlg_desc; - SecBufferDesc resp_desc; - SECURITY_STATUS status; - unsigned long attrs; - TimeStamp expiry; /* For Windows 9x compatibility of SSPI calls */ - TCHAR *spn; - - (void) data; - - /* Query the security package for DigestSSP */ - status = s_pSecFn->QuerySecurityPackageInfo((TCHAR *) TEXT(SP_NAME_DIGEST), - &SecurityPackage); - if(status != SEC_E_OK) - return CURLE_NOT_BUILT_IN; - - token_max = SecurityPackage->cbMaxToken; - - /* Release the package buffer as it is not required anymore */ - s_pSecFn->FreeContextBuffer(SecurityPackage); - - /* Allocate the output buffer according to the max token size as indicated - by the security package */ - output_token = malloc(token_max); - if(!output_token) - return CURLE_OUT_OF_MEMORY; - - if(userp && *userp) { - /* Populate our identity structure */ - if(Curl_create_sspi_identity(userp, passwdp, &identity)) - return CURLE_OUT_OF_MEMORY; - - /* Populate our identity domain */ - if(Curl_override_sspi_http_realm((const char*)digest->input_token, - &identity)) - return CURLE_OUT_OF_MEMORY; - - /* Allow proper cleanup of the identity structure */ - p_identity = &identity; - } - else - /* Use the current Windows user */ - p_identity = NULL; - - /* Acquire our credentials handle */ - status = s_pSecFn->AcquireCredentialsHandle(NULL, - (TCHAR *) TEXT(SP_NAME_DIGEST), - SECPKG_CRED_OUTBOUND, NULL, - p_identity, NULL, NULL, - &credentials, &expiry); - if(status != SEC_E_OK) { - Curl_sspi_free_identity(p_identity); - free(output_token); - - return CURLE_LOGIN_DENIED; - } - - /* Setup the challenge "input" security buffer if present */ - chlg_desc.ulVersion = SECBUFFER_VERSION; - chlg_desc.cBuffers = 3; - chlg_desc.pBuffers = chlg_buf; - chlg_buf[0].BufferType = SECBUFFER_TOKEN; - chlg_buf[0].pvBuffer = digest->input_token; - chlg_buf[0].cbBuffer = curlx_uztoul(digest->input_token_len); - chlg_buf[1].BufferType = SECBUFFER_PKG_PARAMS; - chlg_buf[1].pvBuffer = (void *)request; - chlg_buf[1].cbBuffer = curlx_uztoul(strlen((const char *) request)); - chlg_buf[2].BufferType = SECBUFFER_PKG_PARAMS; - chlg_buf[2].pvBuffer = NULL; - chlg_buf[2].cbBuffer = 0; - - /* 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 = output_token; - resp_buf.cbBuffer = curlx_uztoul(token_max); - - spn = Curl_convert_UTF8_to_tchar((char *) uripath); - if(!spn) { - Curl_sspi_free_identity(p_identity); - free(output_token); - - return CURLE_OUT_OF_MEMORY; - } - - /* Generate our reponse message */ - status = s_pSecFn->InitializeSecurityContext(&credentials, NULL, - spn, - ISC_REQ_USE_HTTP_STYLE, 0, 0, - &chlg_desc, 0, &context, - &resp_desc, &attrs, &expiry); - Curl_unicodefree(spn); - - if(status == SEC_I_COMPLETE_NEEDED || - status == SEC_I_COMPLETE_AND_CONTINUE) - s_pSecFn->CompleteAuthToken(&credentials, &resp_desc); - else if(status != SEC_E_OK && status != SEC_I_CONTINUE_NEEDED) { - s_pSecFn->FreeCredentialsHandle(&credentials); - - Curl_sspi_free_identity(p_identity); - free(output_token); - - return CURLE_OUT_OF_MEMORY; - } - - resp = malloc(resp_buf.cbBuffer + 1); - if(!resp) { - s_pSecFn->DeleteSecurityContext(&context); - s_pSecFn->FreeCredentialsHandle(&credentials); - - Curl_sspi_free_identity(p_identity); - free(output_token); - - return CURLE_OUT_OF_MEMORY; - } - - /* Copy the generated reponse */ - memcpy(resp, resp_buf.pvBuffer, resp_buf.cbBuffer); - resp[resp_buf.cbBuffer] = 0x00; - - /* Return the response */ - *outptr = resp; - *outlen = resp_buf.cbBuffer; - - /* Free our handles */ - s_pSecFn->DeleteSecurityContext(&context); - s_pSecFn->FreeCredentialsHandle(&credentials); - - /* Free the identity structure */ - Curl_sspi_free_identity(p_identity); - - /* Free the response buffer */ - free(output_token); - - return CURLE_OK; -} - -/* - * Curl_sasl_digest_cleanup() - * - * This is used to clean up the digest specific data. - * - * Parameters: - * - * digest [in/out] - The digest data struct being cleaned up. - * - */ -void Curl_sasl_digest_cleanup(struct digestdata *digest) -{ - /* Free the input token */ - Curl_safefree(digest->input_token); - - /* Reset any variables */ - digest->input_token_len = 0; -} -#endif /* !CURL_DISABLE_CRYPTO_AUTH */ - #if defined USE_NTLM /* * Curl_sasl_create_ntlm_type1_message() -- cgit v1.2.3