/* Copyright (C) 2005 Juan Lang * Copyright 2008 Henri Verbeet * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA * * This file implements the schannel provider, or, the SSL/TLS implementations. */ #include "config.h" #include "wine/port.h" #include #include #define NONAMELESSUNION #include "windef.h" #include "winbase.h" #include "winreg.h" #include "winnls.h" #include "sspi.h" #include "schannel.h" #include "secur32_priv.h" #include "wine/unicode.h" #include "wine/debug.h" WINE_DEFAULT_DEBUG_CHANNEL(secur32); #if defined(SONAME_LIBGNUTLS) || defined (HAVE_SECURITY_SECURITY_H) #define SCHAN_INVALID_HANDLE ~0UL enum schan_handle_type { SCHAN_HANDLE_CRED, SCHAN_HANDLE_CTX, SCHAN_HANDLE_FREE }; struct schan_handle { void *object; enum schan_handle_type type; }; struct schan_context { schan_imp_session session; struct schan_transport transport; ULONG req_ctx_attr; const CERT_CONTEXT *cert; SIZE_T header_size; }; static struct schan_handle *schan_handle_table; static struct schan_handle *schan_free_handles; static SIZE_T schan_handle_table_size; static SIZE_T schan_handle_count; /* Protocols enabled, only those may be used for the connection. */ static DWORD config_enabled_protocols; /* Protocols disabled by default. They are enabled for using, but disabled when caller asks for default settings. */ static DWORD config_default_disabled_protocols; static ULONG_PTR schan_alloc_handle(void *object, enum schan_handle_type type) { struct schan_handle *handle; if (schan_free_handles) { DWORD index = schan_free_handles - schan_handle_table; /* Use a free handle */ handle = schan_free_handles; if (handle->type != SCHAN_HANDLE_FREE) { ERR("Handle %d(%p) is in the free list, but has type %#x.\n", index, handle, handle->type); return SCHAN_INVALID_HANDLE; } schan_free_handles = handle->object; handle->object = object; handle->type = type; return index; } if (!(schan_handle_count < schan_handle_table_size)) { /* Grow the table */ SIZE_T new_size = schan_handle_table_size + (schan_handle_table_size >> 1); struct schan_handle *new_table = heap_realloc(schan_handle_table, new_size * sizeof(*schan_handle_table)); if (!new_table) { ERR("Failed to grow the handle table\n"); return SCHAN_INVALID_HANDLE; } schan_handle_table = new_table; schan_handle_table_size = new_size; } handle = &schan_handle_table[schan_handle_count++]; handle->object = object; handle->type = type; return handle - schan_handle_table; } static void *schan_free_handle(ULONG_PTR handle_idx, enum schan_handle_type type) { struct schan_handle *handle; void *object; if (handle_idx == SCHAN_INVALID_HANDLE) return NULL; if (handle_idx >= schan_handle_count) return NULL; handle = &schan_handle_table[handle_idx]; if (handle->type != type) { ERR("Handle %ld(%p) is not of type %#x\n", handle_idx, handle, type); return NULL; } object = handle->object; handle->object = schan_free_handles; handle->type = SCHAN_HANDLE_FREE; schan_free_handles = handle; return object; } static void *schan_get_object(ULONG_PTR handle_idx, enum schan_handle_type type) { struct schan_handle *handle; if (handle_idx == SCHAN_INVALID_HANDLE) return NULL; if (handle_idx >= schan_handle_count) return NULL; handle = &schan_handle_table[handle_idx]; if (handle->type != type) { ERR("Handle %ld(%p) is not of type %#x\n", handle_idx, handle, type); return NULL; } return handle->object; } static void read_config(void) { DWORD enabled = 0, default_disabled = 0; HKEY protocols_key, key; WCHAR subkey_name[64]; unsigned i; DWORD res; static BOOL config_read = FALSE; static const WCHAR protocol_config_key_name[] = { 'S','Y','S','T','E','M','\\', 'C','u','r','r','e','n','t','C','o','n','t','r','o','l','S','e','t','\\', 'C','o','n','t','r','o','l','\\', 'S','e','c','u','r','i','t','y','P','r','o','v','i','d','e','r','s','\\', 'S','C','H','A','N','N','E','L','\\', 'P','r','o','t','o','c','o','l','s',0 }; static const WCHAR clientW[] = {'\\','C','l','i','e','n','t',0}; static const WCHAR enabledW[] = {'e','n','a','b','l','e','d',0}; static const WCHAR disabledbydefaultW[] = {'D','i','s','a','b','l','e','d','B','y','D','e','f','a','u','l','t',0}; static const struct { WCHAR key_name[20]; DWORD prot_client_flag; BOOL enabled; /* If no config is present, enable the protocol */ BOOL disabled_by_default; /* Disable if caller asks for default protocol set */ } protocol_config_keys[] = { {{'S','S','L',' ','2','.','0',0}, SP_PROT_SSL2_CLIENT, FALSE, TRUE}, /* NOTE: TRUE, TRUE on Windows */ {{'S','S','L',' ','3','.','0',0}, SP_PROT_SSL3_CLIENT, TRUE, FALSE}, {{'T','L','S',' ','1','.','0',0}, SP_PROT_TLS1_0_CLIENT, TRUE, FALSE}, {{'T','L','S',' ','1','.','1',0}, SP_PROT_TLS1_1_CLIENT, TRUE, FALSE /* NOTE: not enabled by default on Windows */ }, {{'T','L','S',' ','1','.','2',0}, SP_PROT_TLS1_2_CLIENT, TRUE, FALSE /* NOTE: not enabled by default on Windows */ }, {{'D','T','L','S',' ','1','.','0',0}, SP_PROT_DTLS1_0_CLIENT, TRUE, TRUE }, {{'D','T','L','S',' ','1','.','2',0}, SP_PROT_DTLS1_2_CLIENT, TRUE, TRUE }, }; /* No need for thread safety */ if(config_read) return; res = RegOpenKeyExW(HKEY_LOCAL_MACHINE, protocol_config_key_name, 0, KEY_READ, &protocols_key); if(res == ERROR_SUCCESS) { DWORD type, size, value; for(i = 0; i < ARRAY_SIZE(protocol_config_keys); i++) { strcpyW(subkey_name, protocol_config_keys[i].key_name); strcatW(subkey_name, clientW); res = RegOpenKeyExW(protocols_key, subkey_name, 0, KEY_READ, &key); if(res != ERROR_SUCCESS) { if(protocol_config_keys[i].enabled) enabled |= protocol_config_keys[i].prot_client_flag; if(protocol_config_keys[i].disabled_by_default) default_disabled |= protocol_config_keys[i].prot_client_flag; continue; } size = sizeof(value); res = RegQueryValueExW(key, enabledW, NULL, &type, (BYTE*)&value, &size); if(res == ERROR_SUCCESS) { if(type == REG_DWORD && value) enabled |= protocol_config_keys[i].prot_client_flag; }else if(protocol_config_keys[i].enabled) { enabled |= protocol_config_keys[i].prot_client_flag; } size = sizeof(value); res = RegQueryValueExW(key, disabledbydefaultW, NULL, &type, (BYTE*)&value, &size); if(res == ERROR_SUCCESS) { if(type != REG_DWORD || value) default_disabled |= protocol_config_keys[i].prot_client_flag; }else if(protocol_config_keys[i].disabled_by_default) { default_disabled |= protocol_config_keys[i].prot_client_flag; } RegCloseKey(key); } }else { /* No config, enable all known protocols. */ for(i = 0; i < ARRAY_SIZE(protocol_config_keys); i++) { if(protocol_config_keys[i].enabled) enabled |= protocol_config_keys[i].prot_client_flag; if(protocol_config_keys[i].disabled_by_default) default_disabled |= protocol_config_keys[i].prot_client_flag; } } RegCloseKey(protocols_key); config_enabled_protocols = enabled & schan_imp_enabled_protocols(); config_default_disabled_protocols = default_disabled; config_read = TRUE; TRACE("enabled %x, disabled by default %x\n", config_enabled_protocols, config_default_disabled_protocols); } static SECURITY_STATUS schan_QueryCredentialsAttributes( PCredHandle phCredential, ULONG ulAttribute, VOID *pBuffer) { struct schan_credentials *cred; SECURITY_STATUS ret; cred = schan_get_object(phCredential->dwLower, SCHAN_HANDLE_CRED); if(!cred) return SEC_E_INVALID_HANDLE; switch (ulAttribute) { case SECPKG_ATTR_SUPPORTED_ALGS: if (pBuffer) { /* FIXME: get from CryptoAPI */ FIXME("SECPKG_ATTR_SUPPORTED_ALGS: stub\n"); ret = SEC_E_UNSUPPORTED_FUNCTION; } else ret = SEC_E_INTERNAL_ERROR; break; case SECPKG_ATTR_CIPHER_STRENGTHS: if (pBuffer) { SecPkgCred_CipherStrengths *r = pBuffer; /* FIXME: get from CryptoAPI */ FIXME("SECPKG_ATTR_CIPHER_STRENGTHS: semi-stub\n"); r->dwMinimumCipherStrength = 40; r->dwMaximumCipherStrength = 168; ret = SEC_E_OK; } else ret = SEC_E_INTERNAL_ERROR; break; case SECPKG_ATTR_SUPPORTED_PROTOCOLS: if(pBuffer) { /* Regardless of MSDN documentation, tests show that this attribute takes into account * what protocols are enabled for given credential. */ ((SecPkgCred_SupportedProtocols*)pBuffer)->grbitProtocol = cred->enabled_protocols; ret = SEC_E_OK; }else { ret = SEC_E_INTERNAL_ERROR; } break; default: ret = SEC_E_UNSUPPORTED_FUNCTION; } return ret; } static SECURITY_STATUS SEC_ENTRY schan_QueryCredentialsAttributesA( PCredHandle phCredential, ULONG ulAttribute, PVOID pBuffer) { SECURITY_STATUS ret; TRACE("(%p, %d, %p)\n", phCredential, ulAttribute, pBuffer); switch (ulAttribute) { case SECPKG_CRED_ATTR_NAMES: FIXME("SECPKG_CRED_ATTR_NAMES: stub\n"); ret = SEC_E_UNSUPPORTED_FUNCTION; break; default: ret = schan_QueryCredentialsAttributes(phCredential, ulAttribute, pBuffer); } return ret; } static SECURITY_STATUS SEC_ENTRY schan_QueryCredentialsAttributesW( PCredHandle phCredential, ULONG ulAttribute, PVOID pBuffer) { SECURITY_STATUS ret; TRACE("(%p, %d, %p)\n", phCredential, ulAttribute, pBuffer); switch (ulAttribute) { case SECPKG_CRED_ATTR_NAMES: FIXME("SECPKG_CRED_ATTR_NAMES: stub\n"); ret = SEC_E_UNSUPPORTED_FUNCTION; break; default: ret = schan_QueryCredentialsAttributes(phCredential, ulAttribute, pBuffer); } return ret; } static SECURITY_STATUS get_cert(const SCHANNEL_CRED *cred, CERT_CONTEXT const **cert) { SECURITY_STATUS status; DWORD i; TRACE("dwVersion = %u\n", cred->dwVersion); TRACE("cCreds = %u\n", cred->cCreds); TRACE("paCred = %p\n", cred->paCred); TRACE("hRootStore = %p\n", cred->hRootStore); TRACE("cMappers = %u\n", cred->cMappers); TRACE("cSupportedAlgs = %u:\n", cred->cSupportedAlgs); for (i = 0; i < cred->cSupportedAlgs; i++) TRACE("%08x\n", cred->palgSupportedAlgs[i]); TRACE("grbitEnabledProtocols = %08x\n", cred->grbitEnabledProtocols); TRACE("dwMinimumCipherStrength = %u\n", cred->dwMinimumCipherStrength); TRACE("dwMaximumCipherStrength = %u\n", cred->dwMaximumCipherStrength); TRACE("dwSessionLifespan = %u\n", cred->dwSessionLifespan); TRACE("dwFlags = %08x\n", cred->dwFlags); TRACE("dwCredFormat = %u\n", cred->dwCredFormat); switch (cred->dwVersion) { case SCH_CRED_V3: case SCHANNEL_CRED_VERSION: break; default: return SEC_E_INTERNAL_ERROR; } if (!cred->cCreds) status = SEC_E_NO_CREDENTIALS; else if (cred->cCreds > 1) status = SEC_E_UNKNOWN_CREDENTIALS; else { DWORD spec; HCRYPTPROV prov; BOOL free; if (CryptAcquireCertificatePrivateKey(cred->paCred[0], CRYPT_ACQUIRE_CACHE_FLAG, NULL, &prov, &spec, &free)) { if (free) CryptReleaseContext(prov, 0); *cert = cred->paCred[0]; status = SEC_E_OK; } else status = SEC_E_UNKNOWN_CREDENTIALS; } return status; } static SECURITY_STATUS schan_AcquireClientCredentials(const SCHANNEL_CRED *schanCred, PCredHandle phCredential, PTimeStamp ptsExpiry) { struct schan_credentials *creds; unsigned enabled_protocols; ULONG_PTR handle; SECURITY_STATUS status = SEC_E_OK; const CERT_CONTEXT *cert = NULL; TRACE("schanCred %p, phCredential %p, ptsExpiry %p\n", schanCred, phCredential, ptsExpiry); if (schanCred) { const unsigned dtls_protocols = SP_PROT_DTLS_CLIENT | SP_PROT_DTLS1_2_CLIENT; const unsigned tls_protocols = SP_PROT_TLS1_CLIENT | SP_PROT_TLS1_0_CLIENT | SP_PROT_TLS1_1_CLIENT | SP_PROT_TLS1_2_CLIENT | SP_PROT_TLS1_3_CLIENT; status = get_cert(schanCred, &cert); if (status != SEC_E_OK && status != SEC_E_NO_CREDENTIALS) return status; if ((schanCred->grbitEnabledProtocols & tls_protocols) && (schanCred->grbitEnabledProtocols & dtls_protocols)) return SEC_E_ALGORITHM_MISMATCH; status = SEC_E_OK; } read_config(); if(schanCred && schanCred->grbitEnabledProtocols) enabled_protocols = schanCred->grbitEnabledProtocols & config_enabled_protocols; else enabled_protocols = config_enabled_protocols & ~config_default_disabled_protocols; if(!enabled_protocols) { ERR("Could not find matching protocol\n"); return SEC_E_NO_AUTHENTICATING_AUTHORITY; } creds = heap_alloc(sizeof(*creds)); if (!creds) return SEC_E_INSUFFICIENT_MEMORY; handle = schan_alloc_handle(creds, SCHAN_HANDLE_CRED); if (handle == SCHAN_INVALID_HANDLE) goto fail; creds->credential_use = SECPKG_CRED_OUTBOUND; if (!schan_imp_allocate_certificate_credentials(creds, cert)) { schan_free_handle(handle, SCHAN_HANDLE_CRED); goto fail; } creds->enabled_protocols = enabled_protocols; phCredential->dwLower = handle; phCredential->dwUpper = 0; /* Outbound credentials have no expiry */ if (ptsExpiry) { ptsExpiry->LowPart = 0; ptsExpiry->HighPart = 0; } return status; fail: heap_free(creds); return SEC_E_INTERNAL_ERROR; } static SECURITY_STATUS schan_AcquireServerCredentials(const SCHANNEL_CRED *schanCred, PCredHandle phCredential, PTimeStamp ptsExpiry) { SECURITY_STATUS status; const CERT_CONTEXT *cert = NULL; TRACE("schanCred %p, phCredential %p, ptsExpiry %p\n", schanCred, phCredential, ptsExpiry); if (!schanCred) return SEC_E_NO_CREDENTIALS; status = get_cert(schanCred, &cert); if (status == SEC_E_OK) { ULONG_PTR handle; struct schan_credentials *creds; creds = heap_alloc_zero(sizeof(*creds)); if (!creds) return SEC_E_INSUFFICIENT_MEMORY; creds->credential_use = SECPKG_CRED_INBOUND; handle = schan_alloc_handle(creds, SCHAN_HANDLE_CRED); if (handle == SCHAN_INVALID_HANDLE) { heap_free(creds); return SEC_E_INTERNAL_ERROR; } phCredential->dwLower = handle; phCredential->dwUpper = 0; /* FIXME: get expiry from cert */ } return status; } static SECURITY_STATUS schan_AcquireCredentialsHandle(ULONG fCredentialUse, const SCHANNEL_CRED *schanCred, PCredHandle phCredential, PTimeStamp ptsExpiry) { SECURITY_STATUS ret; if (fCredentialUse == SECPKG_CRED_OUTBOUND) ret = schan_AcquireClientCredentials(schanCred, phCredential, ptsExpiry); else ret = schan_AcquireServerCredentials(schanCred, phCredential, ptsExpiry); return ret; } static SECURITY_STATUS SEC_ENTRY schan_AcquireCredentialsHandleA( SEC_CHAR *pszPrincipal, SEC_CHAR *pszPackage, ULONG fCredentialUse, PLUID pLogonID, PVOID pAuthData, SEC_GET_KEY_FN pGetKeyFn, PVOID pGetKeyArgument, PCredHandle phCredential, PTimeStamp ptsExpiry) { TRACE("(%s, %s, 0x%08x, %p, %p, %p, %p, %p, %p)\n", debugstr_a(pszPrincipal), debugstr_a(pszPackage), fCredentialUse, pLogonID, pAuthData, pGetKeyFn, pGetKeyArgument, phCredential, ptsExpiry); return schan_AcquireCredentialsHandle(fCredentialUse, pAuthData, phCredential, ptsExpiry); } static SECURITY_STATUS SEC_ENTRY schan_AcquireCredentialsHandleW( SEC_WCHAR *pszPrincipal, SEC_WCHAR *pszPackage, ULONG fCredentialUse, PLUID pLogonID, PVOID pAuthData, SEC_GET_KEY_FN pGetKeyFn, PVOID pGetKeyArgument, PCredHandle phCredential, PTimeStamp ptsExpiry) { TRACE("(%s, %s, 0x%08x, %p, %p, %p, %p, %p, %p)\n", debugstr_w(pszPrincipal), debugstr_w(pszPackage), fCredentialUse, pLogonID, pAuthData, pGetKeyFn, pGetKeyArgument, phCredential, ptsExpiry); return schan_AcquireCredentialsHandle(fCredentialUse, pAuthData, phCredential, ptsExpiry); } static SECURITY_STATUS SEC_ENTRY schan_FreeCredentialsHandle( PCredHandle phCredential) { struct schan_credentials *creds; TRACE("phCredential %p\n", phCredential); if (!phCredential) return SEC_E_INVALID_HANDLE; creds = schan_free_handle(phCredential->dwLower, SCHAN_HANDLE_CRED); if (!creds) return SEC_E_INVALID_HANDLE; if (creds->credential_use == SECPKG_CRED_OUTBOUND) schan_imp_free_certificate_credentials(creds); heap_free(creds); return SEC_E_OK; } static void init_schan_buffers(struct schan_buffers *s, const PSecBufferDesc desc, int (*get_next_buffer)(const struct schan_transport *, struct schan_buffers *)) { s->offset = 0; s->limit = ~0UL; s->desc = desc; s->current_buffer_idx = -1; s->allow_buffer_resize = FALSE; s->get_next_buffer = get_next_buffer; } static int schan_find_sec_buffer_idx(const SecBufferDesc *desc, unsigned int start_idx, ULONG buffer_type) { unsigned int i; PSecBuffer buffer; for (i = start_idx; i < desc->cBuffers; ++i) { buffer = &desc->pBuffers[i]; if (buffer->BufferType == buffer_type) return i; } return -1; } static void schan_resize_current_buffer(const struct schan_buffers *s, SIZE_T min_size) { SecBuffer *b = &s->desc->pBuffers[s->current_buffer_idx]; SIZE_T new_size = b->cbBuffer ? b->cbBuffer * 2 : 128; void *new_data; if (b->cbBuffer >= min_size || !s->allow_buffer_resize || min_size > UINT_MAX / 2) return; while (new_size < min_size) new_size *= 2; if (b->pvBuffer) new_data = heap_realloc(b->pvBuffer, new_size); else new_data = heap_alloc(new_size); if (!new_data) { TRACE("Failed to resize %p from %d to %ld\n", b->pvBuffer, b->cbBuffer, new_size); return; } b->cbBuffer = new_size; b->pvBuffer = new_data; } char *schan_get_buffer(const struct schan_transport *t, struct schan_buffers *s, SIZE_T *count) { SIZE_T max_count; PSecBuffer buffer; if (!s->desc) { TRACE("No desc\n"); return NULL; } if (s->current_buffer_idx == -1) { /* Initial buffer */ int buffer_idx = s->get_next_buffer(t, s); if (buffer_idx == -1) { TRACE("No next buffer\n"); return NULL; } s->current_buffer_idx = buffer_idx; } buffer = &s->desc->pBuffers[s->current_buffer_idx]; TRACE("Using buffer %d: cbBuffer %d, BufferType %#x, pvBuffer %p\n", s->current_buffer_idx, buffer->cbBuffer, buffer->BufferType, buffer->pvBuffer); schan_resize_current_buffer(s, s->offset + *count); max_count = buffer->cbBuffer - s->offset; if (s->limit != ~0UL && s->limit < max_count) max_count = s->limit; if (!max_count) { int buffer_idx; s->allow_buffer_resize = FALSE; buffer_idx = s->get_next_buffer(t, s); if (buffer_idx == -1) { TRACE("No next buffer\n"); return NULL; } s->current_buffer_idx = buffer_idx; s->offset = 0; return schan_get_buffer(t, s, count); } if (*count > max_count) *count = max_count; if (s->limit != ~0UL) s->limit -= *count; return (char *)buffer->pvBuffer + s->offset; } /* schan_pull * Read data from the transport input buffer. * * t - The session transport object. * buff - The buffer into which to store the read data. Must be at least * *buff_len bytes in length. * buff_len - On input, *buff_len is the desired length to read. On successful * return, *buff_len is the number of bytes actually read. * * Returns: * 0 on success, in which case: * *buff_len == 0 indicates end of file. * *buff_len > 0 indicates that some data was read. May be less than * what was requested, in which case the caller should call again if/ * when they want more. * EAGAIN when no data could be read without blocking * another errno-style error value on failure * */ int schan_pull(struct schan_transport *t, void *buff, size_t *buff_len) { char *b; SIZE_T local_len = *buff_len; TRACE("Pull %lu bytes\n", local_len); *buff_len = 0; b = schan_get_buffer(t, &t->in, &local_len); if (!b) return EAGAIN; memcpy(buff, b, local_len); t->in.offset += local_len; TRACE("Read %lu bytes\n", local_len); *buff_len = local_len; return 0; } /* schan_push * Write data to the transport output buffer. * * t - The session transport object. * buff - The buffer of data to write. Must be at least *buff_len bytes in length. * buff_len - On input, *buff_len is the desired length to write. On successful * return, *buff_len is the number of bytes actually written. * * Returns: * 0 on success * *buff_len will be > 0 indicating how much data was written. May be less * than what was requested, in which case the caller should call again if/when they want to write more. * EAGAIN when no data could be written without blocking * another errno-style error value on failure * */ int schan_push(struct schan_transport *t, const void *buff, size_t *buff_len) { char *b; SIZE_T local_len = *buff_len; TRACE("Push %lu bytes\n", local_len); *buff_len = 0; b = schan_get_buffer(t, &t->out, &local_len); if (!b) return EAGAIN; memcpy(b, buff, local_len); t->out.offset += local_len; TRACE("Wrote %lu bytes\n", local_len); *buff_len = local_len; return 0; } schan_imp_session schan_session_for_transport(struct schan_transport* t) { return t->ctx->session; } static int schan_init_sec_ctx_get_next_input_buffer(const struct schan_transport *t, struct schan_buffers *s) { if (s->current_buffer_idx != -1) return -1; return schan_find_sec_buffer_idx(s->desc, 0, SECBUFFER_TOKEN); } static int schan_init_sec_ctx_get_next_output_buffer(const struct schan_transport *t, struct schan_buffers *s) { if (s->current_buffer_idx == -1) { int idx = schan_find_sec_buffer_idx(s->desc, 0, SECBUFFER_TOKEN); if (t->ctx->req_ctx_attr & ISC_REQ_ALLOCATE_MEMORY) { if (idx == -1) { idx = schan_find_sec_buffer_idx(s->desc, 0, SECBUFFER_EMPTY); if (idx != -1) s->desc->pBuffers[idx].BufferType = SECBUFFER_TOKEN; } if (idx != -1 && !s->desc->pBuffers[idx].pvBuffer) { s->desc->pBuffers[idx].cbBuffer = 0; s->allow_buffer_resize = TRUE; } } return idx; } return -1; } static void dump_buffer_desc(SecBufferDesc *desc) { unsigned int i; if (!desc) return; TRACE("Buffer desc %p:\n", desc); for (i = 0; i < desc->cBuffers; ++i) { SecBuffer *b = &desc->pBuffers[i]; TRACE("\tbuffer %u: cbBuffer %d, BufferType %#x pvBuffer %p\n", i, b->cbBuffer, b->BufferType, b->pvBuffer); } } #define HEADER_SIZE_TLS 5 #define HEADER_SIZE_DTLS 13 static inline SIZE_T read_record_size(const BYTE *buf, SIZE_T header_size) { return (buf[header_size - 2] << 8) | buf[header_size - 1]; } static inline BOOL is_dtls_context(const struct schan_context *ctx) { return (ctx->header_size == HEADER_SIZE_DTLS); } /*********************************************************************** * InitializeSecurityContextW */ static SECURITY_STATUS SEC_ENTRY schan_InitializeSecurityContextW( PCredHandle phCredential, PCtxtHandle phContext, SEC_WCHAR *pszTargetName, ULONG fContextReq, ULONG Reserved1, ULONG TargetDataRep, PSecBufferDesc pInput, ULONG Reserved2, PCtxtHandle phNewContext, PSecBufferDesc pOutput, ULONG *pfContextAttr, PTimeStamp ptsExpiry) { struct schan_context *ctx; struct schan_buffers *out_buffers; struct schan_credentials *cred; SIZE_T expected_size = ~0UL; SECURITY_STATUS ret; SecBuffer *buffer; int idx; TRACE("%p %p %s 0x%08x %d %d %p %d %p %p %p %p\n", phCredential, phContext, debugstr_w(pszTargetName), fContextReq, Reserved1, TargetDataRep, pInput, Reserved1, phNewContext, pOutput, pfContextAttr, ptsExpiry); dump_buffer_desc(pInput); dump_buffer_desc(pOutput); if (!phContext) { ULONG_PTR handle; if (!phCredential) return SEC_E_INVALID_HANDLE; cred = schan_get_object(phCredential->dwLower, SCHAN_HANDLE_CRED); if (!cred) return SEC_E_INVALID_HANDLE; if (!(cred->credential_use & SECPKG_CRED_OUTBOUND)) { WARN("Invalid credential use %#x\n", cred->credential_use); return SEC_E_INVALID_HANDLE; } ctx = heap_alloc(sizeof(*ctx)); if (!ctx) return SEC_E_INSUFFICIENT_MEMORY; ctx->cert = NULL; handle = schan_alloc_handle(ctx, SCHAN_HANDLE_CTX); if (handle == SCHAN_INVALID_HANDLE) { heap_free(ctx); return SEC_E_INTERNAL_ERROR; } if (!schan_imp_create_session(&ctx->session, cred)) { schan_free_handle(handle, SCHAN_HANDLE_CTX); heap_free(ctx); return SEC_E_INTERNAL_ERROR; } if (cred->enabled_protocols & (SP_PROT_DTLS1_0_CLIENT | SP_PROT_DTLS1_2_CLIENT)) ctx->header_size = HEADER_SIZE_DTLS; else ctx->header_size = HEADER_SIZE_TLS; ctx->transport.ctx = ctx; schan_imp_set_session_transport(ctx->session, &ctx->transport); if (pszTargetName && *pszTargetName) { UINT len = WideCharToMultiByte( CP_UNIXCP, 0, pszTargetName, -1, NULL, 0, NULL, NULL ); char *target = heap_alloc( len ); if (target) { WideCharToMultiByte( CP_UNIXCP, 0, pszTargetName, -1, target, len, NULL, NULL ); schan_imp_set_session_target( ctx->session, target ); heap_free( target ); } } if (pInput && (idx = schan_find_sec_buffer_idx(pInput, 0, SECBUFFER_APPLICATION_PROTOCOLS)) != -1) { buffer = &pInput->pBuffers[idx]; schan_imp_set_application_protocols(ctx->session, buffer->pvBuffer, buffer->cbBuffer); } if (pInput && (idx = schan_find_sec_buffer_idx(pInput, 0, SECBUFFER_DTLS_MTU)) != -1) { buffer = &pInput->pBuffers[idx]; if (buffer->cbBuffer >= sizeof(WORD)) schan_imp_set_dtls_mtu(ctx->session, *(WORD *)buffer->pvBuffer); else WARN("invalid buffer size %u\n", buffer->cbBuffer); } phNewContext->dwLower = handle; phNewContext->dwUpper = 0; } else { SIZE_T record_size = 0; unsigned char *ptr; ctx = schan_get_object(phContext->dwLower, SCHAN_HANDLE_CTX); if (pInput) { idx = schan_find_sec_buffer_idx(pInput, 0, SECBUFFER_TOKEN); if (idx == -1) return SEC_E_INCOMPLETE_MESSAGE; buffer = &pInput->pBuffers[idx]; ptr = buffer->pvBuffer; expected_size = 0; while (buffer->cbBuffer > expected_size + ctx->header_size) { record_size = ctx->header_size + read_record_size(ptr, ctx->header_size); if (buffer->cbBuffer < expected_size + record_size) break; expected_size += record_size; ptr += record_size; } if (!expected_size) { TRACE("Expected at least %lu bytes, but buffer only contains %u bytes.\n", max(6, record_size), buffer->cbBuffer); return SEC_E_INCOMPLETE_MESSAGE; } } else if (!is_dtls_context(ctx)) return SEC_E_INCOMPLETE_MESSAGE; TRACE("Using expected_size %lu.\n", expected_size); } ctx->req_ctx_attr = fContextReq; init_schan_buffers(&ctx->transport.in, pInput, schan_init_sec_ctx_get_next_input_buffer); ctx->transport.in.limit = expected_size; init_schan_buffers(&ctx->transport.out, pOutput, schan_init_sec_ctx_get_next_output_buffer); /* Perform the TLS handshake */ ret = schan_imp_handshake(ctx->session); out_buffers = &ctx->transport.out; if (out_buffers->current_buffer_idx != -1) { SecBuffer *buffer = &out_buffers->desc->pBuffers[out_buffers->current_buffer_idx]; buffer->cbBuffer = out_buffers->offset; } else if (out_buffers->desc && out_buffers->desc->cBuffers > 0) { SecBuffer *buffer = &out_buffers->desc->pBuffers[0]; buffer->cbBuffer = 0; } if(ctx->transport.in.offset && ctx->transport.in.offset != pInput->pBuffers[0].cbBuffer) { if(pInput->cBuffers<2 || pInput->pBuffers[1].BufferType!=SECBUFFER_EMPTY) return SEC_E_INVALID_TOKEN; pInput->pBuffers[1].BufferType = SECBUFFER_EXTRA; pInput->pBuffers[1].cbBuffer = pInput->pBuffers[0].cbBuffer-ctx->transport.in.offset; } *pfContextAttr = ISC_RET_REPLAY_DETECT | ISC_RET_SEQUENCE_DETECT | ISC_RET_CONFIDENTIALITY | ISC_RET_STREAM; if (ctx->req_ctx_attr & ISC_REQ_EXTENDED_ERROR) *pfContextAttr |= ISC_RET_EXTENDED_ERROR; if (ctx->req_ctx_attr & ISC_REQ_DATAGRAM) *pfContextAttr |= ISC_RET_DATAGRAM; if (ctx->req_ctx_attr & ISC_REQ_ALLOCATE_MEMORY) *pfContextAttr |= ISC_RET_ALLOCATED_MEMORY; if (ctx->req_ctx_attr & ISC_REQ_USE_SUPPLIED_CREDS) *pfContextAttr |= ISC_RET_USED_SUPPLIED_CREDS; if (ctx->req_ctx_attr & ISC_REQ_MANUAL_CRED_VALIDATION) *pfContextAttr |= ISC_RET_MANUAL_CRED_VALIDATION; return ret; } /*********************************************************************** * InitializeSecurityContextA */ static SECURITY_STATUS SEC_ENTRY schan_InitializeSecurityContextA( PCredHandle phCredential, PCtxtHandle phContext, SEC_CHAR *pszTargetName, ULONG fContextReq, ULONG Reserved1, ULONG TargetDataRep, PSecBufferDesc pInput, ULONG Reserved2, PCtxtHandle phNewContext, PSecBufferDesc pOutput, ULONG *pfContextAttr, PTimeStamp ptsExpiry) { SECURITY_STATUS ret; SEC_WCHAR *target_name = NULL; TRACE("%p %p %s %d %d %d %p %d %p %p %p %p\n", phCredential, phContext, debugstr_a(pszTargetName), fContextReq, Reserved1, TargetDataRep, pInput, Reserved1, phNewContext, pOutput, pfContextAttr, ptsExpiry); if (pszTargetName) { INT len = MultiByteToWideChar(CP_ACP, 0, pszTargetName, -1, NULL, 0); if (!(target_name = heap_alloc(len * sizeof(*target_name)))) return SEC_E_INSUFFICIENT_MEMORY; MultiByteToWideChar(CP_ACP, 0, pszTargetName, -1, target_name, len); } ret = schan_InitializeSecurityContextW(phCredential, phContext, target_name, fContextReq, Reserved1, TargetDataRep, pInput, Reserved2, phNewContext, pOutput, pfContextAttr, ptsExpiry); heap_free(target_name); return ret; } static void *get_alg_name(ALG_ID id, BOOL wide) { static const struct { ALG_ID alg_id; const char* name; const WCHAR nameW[8]; } alg_name_map[] = { { CALG_ECDSA, "ECDSA", {'E','C','D','S','A',0} }, { CALG_RSA_SIGN, "RSA", {'R','S','A',0} }, { CALG_DES, "DES", {'D','E','S',0} }, { CALG_RC2, "RC2", {'R','C','2',0} }, { CALG_3DES, "3DES", {'3','D','E','S',0} }, { CALG_AES_128, "AES", {'A','E','S',0} }, { CALG_AES_192, "AES", {'A','E','S',0} }, { CALG_AES_256, "AES", {'A','E','S',0} }, { CALG_RC4, "RC4", {'R','C','4',0} }, }; unsigned i; for (i = 0; i < ARRAY_SIZE(alg_name_map); i++) if (alg_name_map[i].alg_id == id) return wide ? (void*)alg_name_map[i].nameW : (void*)alg_name_map[i].name; FIXME("Unknown ALG_ID %04x\n", id); return NULL; } static SECURITY_STATUS ensure_remote_cert(struct schan_context *ctx) { HCERTSTORE cert_store; SECURITY_STATUS status; if(ctx->cert) return SEC_E_OK; cert_store = CertOpenStore(CERT_STORE_PROV_MEMORY, 0, 0, CERT_STORE_CREATE_NEW_FLAG, NULL); if(!cert_store) return GetLastError(); status = schan_imp_get_session_peer_certificate(ctx->session, cert_store, &ctx->cert); CertCloseStore(cert_store, 0); return status; } static SECURITY_STATUS SEC_ENTRY schan_QueryContextAttributesW( PCtxtHandle context_handle, ULONG attribute, PVOID buffer) { struct schan_context *ctx; SECURITY_STATUS status; TRACE("context_handle %p, attribute %#x, buffer %p\n", context_handle, attribute, buffer); if (!context_handle) return SEC_E_INVALID_HANDLE; ctx = schan_get_object(context_handle->dwLower, SCHAN_HANDLE_CTX); switch(attribute) { case SECPKG_ATTR_STREAM_SIZES: { SecPkgContext_ConnectionInfo info; status = schan_imp_get_connection_info(ctx->session, &info); if (status == SEC_E_OK) { SecPkgContext_StreamSizes *stream_sizes = buffer; SIZE_T mac_size = info.dwHashStrength; unsigned int block_size = schan_imp_get_session_cipher_block_size(ctx->session); unsigned int message_size = schan_imp_get_max_message_size(ctx->session); TRACE("Using header size %lu mac bytes %lu, message size %u, block size %u\n", ctx->header_size, mac_size, message_size, block_size); /* These are defined by the TLS RFC */ stream_sizes->cbHeader = ctx->header_size; stream_sizes->cbTrailer = mac_size + 256; /* Max 255 bytes padding + 1 for padding size */ stream_sizes->cbMaximumMessage = message_size; stream_sizes->cbBuffers = 4; stream_sizes->cbBlockSize = block_size; } return status; } case SECPKG_ATTR_KEY_INFO: { SecPkgContext_ConnectionInfo conn_info; status = schan_imp_get_connection_info(ctx->session, &conn_info); if (status == SEC_E_OK) { SecPkgContext_KeyInfoW *info = buffer; info->KeySize = conn_info.dwCipherStrength; info->SignatureAlgorithm = schan_imp_get_key_signature_algorithm(ctx->session); info->EncryptAlgorithm = conn_info.aiCipher; info->sSignatureAlgorithmName = get_alg_name(info->SignatureAlgorithm, TRUE); info->sEncryptAlgorithmName = get_alg_name(info->EncryptAlgorithm, TRUE); } return status; } case SECPKG_ATTR_REMOTE_CERT_CONTEXT: { PCCERT_CONTEXT *cert = buffer; status = ensure_remote_cert(ctx); if(status != SEC_E_OK) return status; *cert = CertDuplicateCertificateContext(ctx->cert); return SEC_E_OK; } case SECPKG_ATTR_CONNECTION_INFO: { SecPkgContext_ConnectionInfo *info = buffer; return schan_imp_get_connection_info(ctx->session, info); } case SECPKG_ATTR_ENDPOINT_BINDINGS: { SecPkgContext_Bindings *bindings = buffer; CCRYPT_OID_INFO *info; ALG_ID hash_alg = CALG_SHA_256; BYTE hash[1024]; DWORD hash_size; char *p; BOOL r; static const char prefix[] = "tls-server-end-point:"; status = ensure_remote_cert(ctx); if(status != SEC_E_OK) return status; /* RFC 5929 */ info = CryptFindOIDInfo(CRYPT_OID_INFO_OID_KEY, ctx->cert->pCertInfo->SignatureAlgorithm.pszObjId, 0); if(info && info->u.Algid != CALG_SHA1 && info->u.Algid != CALG_MD5) hash_alg = info->u.Algid; hash_size = sizeof(hash); r = CryptHashCertificate(0, hash_alg, 0, ctx->cert->pbCertEncoded, ctx->cert->cbCertEncoded, hash, &hash_size); if(!r) return GetLastError(); bindings->BindingsLength = sizeof(*bindings->Bindings) + sizeof(prefix)-1 + hash_size; bindings->Bindings = heap_alloc_zero(bindings->BindingsLength); if(!bindings->Bindings) return SEC_E_INSUFFICIENT_MEMORY; bindings->Bindings->cbApplicationDataLength = sizeof(prefix)-1 + hash_size; bindings->Bindings->dwApplicationDataOffset = sizeof(*bindings->Bindings); p = (char*)(bindings->Bindings+1); memcpy(p, prefix, sizeof(prefix)-1); p += sizeof(prefix)-1; memcpy(p, hash, hash_size); return SEC_E_OK; } case SECPKG_ATTR_UNIQUE_BINDINGS: { SecPkgContext_Bindings *bindings = buffer; return schan_imp_get_unique_channel_binding(ctx->session, bindings); } case SECPKG_ATTR_APPLICATION_PROTOCOL: { SecPkgContext_ApplicationProtocol *protocol = buffer; return schan_imp_get_application_protocol(ctx->session, protocol); } default: FIXME("Unhandled attribute %#x\n", attribute); return SEC_E_UNSUPPORTED_FUNCTION; } } static SECURITY_STATUS SEC_ENTRY schan_QueryContextAttributesA( PCtxtHandle context_handle, ULONG attribute, PVOID buffer) { TRACE("context_handle %p, attribute %#x, buffer %p\n", context_handle, attribute, buffer); switch(attribute) { case SECPKG_ATTR_STREAM_SIZES: return schan_QueryContextAttributesW(context_handle, attribute, buffer); case SECPKG_ATTR_KEY_INFO: { SECURITY_STATUS status = schan_QueryContextAttributesW(context_handle, attribute, buffer); if (status == SEC_E_OK) { SecPkgContext_KeyInfoA *info = buffer; info->sSignatureAlgorithmName = get_alg_name(info->SignatureAlgorithm, FALSE); info->sEncryptAlgorithmName = get_alg_name(info->EncryptAlgorithm, FALSE); } return status; } case SECPKG_ATTR_REMOTE_CERT_CONTEXT: return schan_QueryContextAttributesW(context_handle, attribute, buffer); case SECPKG_ATTR_CONNECTION_INFO: return schan_QueryContextAttributesW(context_handle, attribute, buffer); case SECPKG_ATTR_ENDPOINT_BINDINGS: return schan_QueryContextAttributesW(context_handle, attribute, buffer); case SECPKG_ATTR_UNIQUE_BINDINGS: return schan_QueryContextAttributesW(context_handle, attribute, buffer); case SECPKG_ATTR_APPLICATION_PROTOCOL: return schan_QueryContextAttributesW(context_handle, attribute, buffer); default: FIXME("Unhandled attribute %#x\n", attribute); return SEC_E_UNSUPPORTED_FUNCTION; } } static int schan_encrypt_message_get_next_buffer(const struct schan_transport *t, struct schan_buffers *s) { SecBuffer *b; if (s->current_buffer_idx == -1) return schan_find_sec_buffer_idx(s->desc, 0, SECBUFFER_STREAM_HEADER); b = &s->desc->pBuffers[s->current_buffer_idx]; if (b->BufferType == SECBUFFER_STREAM_HEADER) return schan_find_sec_buffer_idx(s->desc, 0, SECBUFFER_DATA); if (b->BufferType == SECBUFFER_DATA) return schan_find_sec_buffer_idx(s->desc, 0, SECBUFFER_STREAM_TRAILER); return -1; } static int schan_encrypt_message_get_next_buffer_token(const struct schan_transport *t, struct schan_buffers *s) { SecBuffer *b; if (s->current_buffer_idx == -1) return schan_find_sec_buffer_idx(s->desc, 0, SECBUFFER_TOKEN); b = &s->desc->pBuffers[s->current_buffer_idx]; if (b->BufferType == SECBUFFER_TOKEN) { int idx = schan_find_sec_buffer_idx(s->desc, 0, SECBUFFER_TOKEN); if (idx != s->current_buffer_idx) return -1; return schan_find_sec_buffer_idx(s->desc, 0, SECBUFFER_DATA); } if (b->BufferType == SECBUFFER_DATA) { int idx = schan_find_sec_buffer_idx(s->desc, 0, SECBUFFER_TOKEN); if (idx != -1) idx = schan_find_sec_buffer_idx(s->desc, idx + 1, SECBUFFER_TOKEN); return idx; } return -1; } static SECURITY_STATUS SEC_ENTRY schan_EncryptMessage(PCtxtHandle context_handle, ULONG quality, PSecBufferDesc message, ULONG message_seq_no) { struct schan_context *ctx; struct schan_buffers *b; SECURITY_STATUS status; SecBuffer *buffer; SIZE_T data_size; SIZE_T length; char *data; int idx; TRACE("context_handle %p, quality %d, message %p, message_seq_no %d\n", context_handle, quality, message, message_seq_no); if (!context_handle) return SEC_E_INVALID_HANDLE; ctx = schan_get_object(context_handle->dwLower, SCHAN_HANDLE_CTX); dump_buffer_desc(message); idx = schan_find_sec_buffer_idx(message, 0, SECBUFFER_DATA); if (idx == -1) { WARN("No data buffer passed\n"); return SEC_E_INTERNAL_ERROR; } buffer = &message->pBuffers[idx]; data_size = buffer->cbBuffer; data = heap_alloc(data_size); memcpy(data, buffer->pvBuffer, data_size); if (schan_find_sec_buffer_idx(message, 0, SECBUFFER_STREAM_HEADER) != -1) init_schan_buffers(&ctx->transport.out, message, schan_encrypt_message_get_next_buffer); else init_schan_buffers(&ctx->transport.out, message, schan_encrypt_message_get_next_buffer_token); length = data_size; status = schan_imp_send(ctx->session, data, &length); TRACE("Sent %ld bytes.\n", length); if (length != data_size) status = SEC_E_INTERNAL_ERROR; b = &ctx->transport.out; b->desc->pBuffers[b->current_buffer_idx].cbBuffer = b->offset; heap_free(data); TRACE("Returning %#x.\n", status); return status; } static int schan_decrypt_message_get_next_buffer(const struct schan_transport *t, struct schan_buffers *s) { if (s->current_buffer_idx == -1) return schan_find_sec_buffer_idx(s->desc, 0, SECBUFFER_DATA); return -1; } static int schan_validate_decrypt_buffer_desc(PSecBufferDesc message) { int data_idx = -1; unsigned int empty_count = 0; unsigned int i; if (message->cBuffers < 4) { WARN("Less than four buffers passed\n"); return -1; } for (i = 0; i < message->cBuffers; ++i) { SecBuffer *b = &message->pBuffers[i]; if (b->BufferType == SECBUFFER_DATA) { if (data_idx != -1) { WARN("More than one data buffer passed\n"); return -1; } data_idx = i; } else if (b->BufferType == SECBUFFER_EMPTY) ++empty_count; } if (data_idx == -1) { WARN("No data buffer passed\n"); return -1; } if (empty_count < 3) { WARN("Less than three empty buffers passed\n"); return -1; } return data_idx; } static void schan_decrypt_fill_buffer(PSecBufferDesc message, ULONG buffer_type, void *data, ULONG size) { int idx; SecBuffer *buffer; idx = schan_find_sec_buffer_idx(message, 0, SECBUFFER_EMPTY); buffer = &message->pBuffers[idx]; buffer->BufferType = buffer_type; buffer->pvBuffer = data; buffer->cbBuffer = size; } static SECURITY_STATUS SEC_ENTRY schan_DecryptMessage(PCtxtHandle context_handle, PSecBufferDesc message, ULONG message_seq_no, PULONG quality) { SECURITY_STATUS status = SEC_E_OK; struct schan_context *ctx; SecBuffer *buffer; SIZE_T data_size; char *data; unsigned expected_size; SSIZE_T received = 0; int idx; unsigned char *buf_ptr; TRACE("context_handle %p, message %p, message_seq_no %d, quality %p\n", context_handle, message, message_seq_no, quality); if (!context_handle) return SEC_E_INVALID_HANDLE; ctx = schan_get_object(context_handle->dwLower, SCHAN_HANDLE_CTX); dump_buffer_desc(message); idx = schan_validate_decrypt_buffer_desc(message); if (idx == -1) return SEC_E_INVALID_TOKEN; buffer = &message->pBuffers[idx]; buf_ptr = buffer->pvBuffer; expected_size = ctx->header_size + read_record_size(buf_ptr, ctx->header_size); if(buffer->cbBuffer < expected_size) { TRACE("Expected %u bytes, but buffer only contains %u bytes\n", expected_size, buffer->cbBuffer); buffer->BufferType = SECBUFFER_MISSING; buffer->cbBuffer = expected_size - buffer->cbBuffer; /* This is a bit weird, but windows does it too */ idx = schan_find_sec_buffer_idx(message, 0, SECBUFFER_EMPTY); buffer = &message->pBuffers[idx]; buffer->BufferType = SECBUFFER_MISSING; buffer->cbBuffer = expected_size - buffer->cbBuffer; TRACE("Returning SEC_E_INCOMPLETE_MESSAGE\n"); return SEC_E_INCOMPLETE_MESSAGE; } data_size = expected_size - ctx->header_size; data = heap_alloc(data_size); init_schan_buffers(&ctx->transport.in, message, schan_decrypt_message_get_next_buffer); ctx->transport.in.limit = expected_size; while (received < data_size) { SIZE_T length = data_size - received; status = schan_imp_recv(ctx->session, data + received, &length); if (status == SEC_I_RENEGOTIATE) break; if (status == SEC_I_CONTINUE_NEEDED) { status = SEC_E_OK; break; } if (status != SEC_E_OK) { heap_free(data); ERR("Returning %x\n", status); return status; } if (!length) break; received += length; } TRACE("Received %ld bytes\n", received); memcpy(buf_ptr + ctx->header_size, data, received); heap_free(data); schan_decrypt_fill_buffer(message, SECBUFFER_DATA, buf_ptr + ctx->header_size, received); schan_decrypt_fill_buffer(message, SECBUFFER_STREAM_TRAILER, buf_ptr + ctx->header_size + received, buffer->cbBuffer - ctx->header_size - received); if(buffer->cbBuffer > expected_size) schan_decrypt_fill_buffer(message, SECBUFFER_EXTRA, buf_ptr + expected_size, buffer->cbBuffer - expected_size); buffer->BufferType = SECBUFFER_STREAM_HEADER; buffer->cbBuffer = ctx->header_size; return status; } static SECURITY_STATUS SEC_ENTRY schan_DeleteSecurityContext(PCtxtHandle context_handle) { struct schan_context *ctx; TRACE("context_handle %p\n", context_handle); if (!context_handle) return SEC_E_INVALID_HANDLE; ctx = schan_free_handle(context_handle->dwLower, SCHAN_HANDLE_CTX); if (!ctx) return SEC_E_INVALID_HANDLE; if (ctx->cert) CertFreeCertificateContext(ctx->cert); schan_imp_dispose_session(ctx->session); heap_free(ctx); return SEC_E_OK; } static const SecurityFunctionTableA schanTableA = { 1, NULL, /* EnumerateSecurityPackagesA */ schan_QueryCredentialsAttributesA, schan_AcquireCredentialsHandleA, schan_FreeCredentialsHandle, NULL, /* Reserved2 */ schan_InitializeSecurityContextA, NULL, /* AcceptSecurityContext */ NULL, /* CompleteAuthToken */ schan_DeleteSecurityContext, NULL, /* ApplyControlToken */ schan_QueryContextAttributesA, NULL, /* ImpersonateSecurityContext */ NULL, /* RevertSecurityContext */ NULL, /* MakeSignature */ NULL, /* VerifySignature */ FreeContextBuffer, NULL, /* QuerySecurityPackageInfoA */ NULL, /* Reserved3 */ NULL, /* Reserved4 */ NULL, /* ExportSecurityContext */ NULL, /* ImportSecurityContextA */ NULL, /* AddCredentialsA */ NULL, /* Reserved8 */ NULL, /* QuerySecurityContextToken */ schan_EncryptMessage, schan_DecryptMessage, NULL, /* SetContextAttributesA */ }; static const SecurityFunctionTableW schanTableW = { 1, NULL, /* EnumerateSecurityPackagesW */ schan_QueryCredentialsAttributesW, schan_AcquireCredentialsHandleW, schan_FreeCredentialsHandle, NULL, /* Reserved2 */ schan_InitializeSecurityContextW, NULL, /* AcceptSecurityContext */ NULL, /* CompleteAuthToken */ schan_DeleteSecurityContext, NULL, /* ApplyControlToken */ schan_QueryContextAttributesW, NULL, /* ImpersonateSecurityContext */ NULL, /* RevertSecurityContext */ NULL, /* MakeSignature */ NULL, /* VerifySignature */ FreeContextBuffer, NULL, /* QuerySecurityPackageInfoW */ NULL, /* Reserved3 */ NULL, /* Reserved4 */ NULL, /* ExportSecurityContext */ NULL, /* ImportSecurityContextW */ NULL, /* AddCredentialsW */ NULL, /* Reserved8 */ NULL, /* QuerySecurityContextToken */ schan_EncryptMessage, schan_DecryptMessage, NULL, /* SetContextAttributesW */ }; static const WCHAR schannelComment[] = { 'S','c','h','a','n','n','e','l',' ', 'S','e','c','u','r','i','t','y',' ','P','a','c','k','a','g','e',0 }; static const WCHAR schannelDllName[] = { 's','c','h','a','n','n','e','l','.','d','l','l',0 }; void SECUR32_initSchannelSP(void) { /* This is what Windows reports. This shouldn't break any applications * even though the functions are missing, because the wrapper will * return SEC_E_UNSUPPORTED_FUNCTION if our function is NULL. */ static const LONG caps = SECPKG_FLAG_INTEGRITY | SECPKG_FLAG_PRIVACY | SECPKG_FLAG_CONNECTION | SECPKG_FLAG_MULTI_REQUIRED | SECPKG_FLAG_EXTENDED_ERROR | SECPKG_FLAG_IMPERSONATION | SECPKG_FLAG_ACCEPT_WIN32_NAME | SECPKG_FLAG_STREAM; static const short version = 1; static const LONG maxToken = 16384; SEC_WCHAR *uniSPName = (SEC_WCHAR *)UNISP_NAME_W, *schannel = (SEC_WCHAR *)SCHANNEL_NAME_W; const SecPkgInfoW info[] = { { caps, version, UNISP_RPC_ID, maxToken, uniSPName, uniSPName }, { caps, version, UNISP_RPC_ID, maxToken, schannel, (SEC_WCHAR *)schannelComment }, }; SecureProvider *provider; if (!schan_imp_init()) return; schan_handle_table = heap_alloc(64 * sizeof(*schan_handle_table)); if (!schan_handle_table) { ERR("Failed to allocate schannel handle table.\n"); goto fail; } schan_handle_table_size = 64; provider = SECUR32_addProvider(&schanTableA, &schanTableW, schannelDllName); if (!provider) { ERR("Failed to add schannel provider.\n"); goto fail; } SECUR32_addPackages(provider, ARRAY_SIZE(info), NULL, info); return; fail: heap_free(schan_handle_table); schan_handle_table = NULL; schan_imp_deinit(); return; } void SECUR32_deinitSchannelSP(void) { SIZE_T i = schan_handle_count; if (!schan_handle_table) return; /* deinitialized sessions first because a pointer to the credentials * may be stored for the session. */ while (i--) { if (schan_handle_table[i].type == SCHAN_HANDLE_CTX) { struct schan_context *ctx = schan_free_handle(i, SCHAN_HANDLE_CTX); schan_imp_dispose_session(ctx->session); heap_free(ctx); } } i = schan_handle_count; while (i--) { if (schan_handle_table[i].type != SCHAN_HANDLE_FREE) { struct schan_credentials *cred; cred = schan_free_handle(i, SCHAN_HANDLE_CRED); schan_imp_free_certificate_credentials(cred); heap_free(cred); } } heap_free(schan_handle_table); schan_imp_deinit(); } #else /* SONAME_LIBGNUTLS || HAVE_SECURITY_SECURITY_H */ void SECUR32_initSchannelSP(void) { ERR("TLS library not found, SSL connections will fail\n"); } void SECUR32_deinitSchannelSP(void) {} #endif /* SONAME_LIBGNUTLS || HAVE_SECURITY_SECURITY_H */