| /* |
| * |
| * Copyright 2015 gRPC authors. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| * |
| */ |
| |
| #include <grpc/support/port_platform.h> |
| |
| #include <string.h> |
| |
| #include "src/core/lib/channel/channel_args.h" |
| #include "src/core/lib/gpr/arena.h" |
| #include "src/core/lib/gpr/string.h" |
| #include "src/core/lib/gprpp/ref_counted.h" |
| #include "src/core/lib/gprpp/ref_counted_ptr.h" |
| #include "src/core/lib/security/context/security_context.h" |
| #include "src/core/lib/surface/api_trace.h" |
| #include "src/core/lib/surface/call.h" |
| |
| #include <grpc/grpc_security.h> |
| #include <grpc/support/alloc.h> |
| #include <grpc/support/log.h> |
| #include <grpc/support/string_util.h> |
| |
| grpc_core::DebugOnlyTraceFlag grpc_trace_auth_context_refcount( |
| false, "auth_context_refcount"); |
| |
| /* --- grpc_call --- */ |
| |
| grpc_call_error grpc_call_set_credentials(grpc_call* call, |
| grpc_call_credentials* creds) { |
| grpc_core::ExecCtx exec_ctx; |
| grpc_client_security_context* ctx = nullptr; |
| GRPC_API_TRACE("grpc_call_set_credentials(call=%p, creds=%p)", 2, |
| (call, creds)); |
| if (!grpc_call_is_client(call)) { |
| gpr_log(GPR_ERROR, "Method is client-side only."); |
| return GRPC_CALL_ERROR_NOT_ON_SERVER; |
| } |
| ctx = static_cast<grpc_client_security_context*>( |
| grpc_call_context_get(call, GRPC_CONTEXT_SECURITY)); |
| if (ctx == nullptr) { |
| ctx = grpc_client_security_context_create(grpc_call_get_arena(call), creds); |
| grpc_call_context_set(call, GRPC_CONTEXT_SECURITY, ctx, |
| grpc_client_security_context_destroy); |
| } else { |
| ctx->creds = creds != nullptr ? creds->Ref() : nullptr; |
| } |
| |
| return GRPC_CALL_OK; |
| } |
| |
| grpc_auth_context* grpc_call_auth_context(grpc_call* call) { |
| void* sec_ctx = grpc_call_context_get(call, GRPC_CONTEXT_SECURITY); |
| GRPC_API_TRACE("grpc_call_auth_context(call=%p)", 1, (call)); |
| if (sec_ctx == nullptr) return nullptr; |
| if (grpc_call_is_client(call)) { |
| auto* sc = static_cast<grpc_client_security_context*>(sec_ctx); |
| if (sc->auth_context == nullptr) { |
| return nullptr; |
| } else { |
| return sc->auth_context |
| ->Ref(DEBUG_LOCATION, "grpc_call_auth_context client") |
| .release(); |
| } |
| } else { |
| auto* sc = static_cast<grpc_server_security_context*>(sec_ctx); |
| if (sc->auth_context == nullptr) { |
| return nullptr; |
| } else { |
| return sc->auth_context |
| ->Ref(DEBUG_LOCATION, "grpc_call_auth_context server") |
| .release(); |
| } |
| } |
| } |
| |
| void grpc_auth_context_release(grpc_auth_context* context) { |
| GRPC_API_TRACE("grpc_auth_context_release(context=%p)", 1, (context)); |
| if (context == nullptr) return; |
| context->Unref(DEBUG_LOCATION, "grpc_auth_context_unref"); |
| } |
| |
| /* --- grpc_client_security_context --- */ |
| grpc_client_security_context::~grpc_client_security_context() { |
| auth_context.reset(DEBUG_LOCATION, "client_security_context"); |
| if (extension.instance != nullptr && extension.destroy != nullptr) { |
| extension.destroy(extension.instance); |
| } |
| } |
| |
| grpc_client_security_context* grpc_client_security_context_create( |
| gpr_arena* arena, grpc_call_credentials* creds) { |
| return new (gpr_arena_alloc(arena, sizeof(grpc_client_security_context))) |
| grpc_client_security_context(creds != nullptr ? creds->Ref() : nullptr); |
| } |
| |
| void grpc_client_security_context_destroy(void* ctx) { |
| grpc_core::ExecCtx exec_ctx; |
| grpc_client_security_context* c = |
| static_cast<grpc_client_security_context*>(ctx); |
| c->~grpc_client_security_context(); |
| } |
| |
| /* --- grpc_server_security_context --- */ |
| grpc_server_security_context::~grpc_server_security_context() { |
| auth_context.reset(DEBUG_LOCATION, "server_security_context"); |
| if (extension.instance != nullptr && extension.destroy != nullptr) { |
| extension.destroy(extension.instance); |
| } |
| } |
| |
| grpc_server_security_context* grpc_server_security_context_create( |
| gpr_arena* arena) { |
| return new (gpr_arena_alloc(arena, sizeof(grpc_server_security_context))) |
| grpc_server_security_context(); |
| } |
| |
| void grpc_server_security_context_destroy(void* ctx) { |
| grpc_server_security_context* c = |
| static_cast<grpc_server_security_context*>(ctx); |
| c->~grpc_server_security_context(); |
| } |
| |
| /* --- grpc_auth_context --- */ |
| |
| static grpc_auth_property_iterator empty_iterator = {nullptr, 0, nullptr}; |
| |
| const char* grpc_auth_context_peer_identity_property_name( |
| const grpc_auth_context* ctx) { |
| GRPC_API_TRACE("grpc_auth_context_peer_identity_property_name(ctx=%p)", 1, |
| (ctx)); |
| return ctx->peer_identity_property_name(); |
| } |
| |
| int grpc_auth_context_set_peer_identity_property_name(grpc_auth_context* ctx, |
| const char* name) { |
| grpc_auth_property_iterator it = |
| grpc_auth_context_find_properties_by_name(ctx, name); |
| const grpc_auth_property* prop = grpc_auth_property_iterator_next(&it); |
| GRPC_API_TRACE( |
| "grpc_auth_context_set_peer_identity_property_name(ctx=%p, name=%s)", 2, |
| (ctx, name)); |
| if (prop == nullptr) { |
| gpr_log(GPR_ERROR, "Property name %s not found in auth context.", |
| name != nullptr ? name : "NULL"); |
| return 0; |
| } |
| ctx->set_peer_identity_property_name(prop->name); |
| return 1; |
| } |
| |
| int grpc_auth_context_peer_is_authenticated(const grpc_auth_context* ctx) { |
| GRPC_API_TRACE("grpc_auth_context_peer_is_authenticated(ctx=%p)", 1, (ctx)); |
| return ctx->is_authenticated(); |
| } |
| |
| grpc_auth_property_iterator grpc_auth_context_property_iterator( |
| const grpc_auth_context* ctx) { |
| grpc_auth_property_iterator it = empty_iterator; |
| GRPC_API_TRACE("grpc_auth_context_property_iterator(ctx=%p)", 1, (ctx)); |
| if (ctx == nullptr) return it; |
| it.ctx = ctx; |
| return it; |
| } |
| |
| const grpc_auth_property* grpc_auth_property_iterator_next( |
| grpc_auth_property_iterator* it) { |
| GRPC_API_TRACE("grpc_auth_property_iterator_next(it=%p)", 1, (it)); |
| if (it == nullptr || it->ctx == nullptr) return nullptr; |
| while (it->index == it->ctx->properties().count) { |
| if (it->ctx->chained() == nullptr) return nullptr; |
| it->ctx = it->ctx->chained(); |
| it->index = 0; |
| } |
| if (it->name == nullptr) { |
| return &it->ctx->properties().array[it->index++]; |
| } else { |
| while (it->index < it->ctx->properties().count) { |
| const grpc_auth_property* prop = |
| &it->ctx->properties().array[it->index++]; |
| GPR_ASSERT(prop->name != nullptr); |
| if (strcmp(it->name, prop->name) == 0) { |
| return prop; |
| } |
| } |
| /* We could not find the name, try another round. */ |
| return grpc_auth_property_iterator_next(it); |
| } |
| } |
| |
| grpc_auth_property_iterator grpc_auth_context_find_properties_by_name( |
| const grpc_auth_context* ctx, const char* name) { |
| grpc_auth_property_iterator it = empty_iterator; |
| GRPC_API_TRACE("grpc_auth_context_find_properties_by_name(ctx=%p, name=%s)", |
| 2, (ctx, name)); |
| if (ctx == nullptr || name == nullptr) return empty_iterator; |
| it.ctx = ctx; |
| it.name = name; |
| return it; |
| } |
| |
| grpc_auth_property_iterator grpc_auth_context_peer_identity( |
| const grpc_auth_context* ctx) { |
| GRPC_API_TRACE("grpc_auth_context_peer_identity(ctx=%p)", 1, (ctx)); |
| if (ctx == nullptr) return empty_iterator; |
| return grpc_auth_context_find_properties_by_name( |
| ctx, ctx->peer_identity_property_name()); |
| } |
| |
| void grpc_auth_context::ensure_capacity() { |
| if (properties_.count == properties_.capacity) { |
| properties_.capacity = |
| GPR_MAX(properties_.capacity + 8, properties_.capacity * 2); |
| properties_.array = static_cast<grpc_auth_property*>(gpr_realloc( |
| properties_.array, properties_.capacity * sizeof(grpc_auth_property))); |
| } |
| } |
| |
| void grpc_auth_context::add_property(const char* name, const char* value, |
| size_t value_length) { |
| ensure_capacity(); |
| grpc_auth_property* prop = &properties_.array[properties_.count++]; |
| prop->name = gpr_strdup(name); |
| prop->value = static_cast<char*>(gpr_malloc(value_length + 1)); |
| memcpy(prop->value, value, value_length); |
| prop->value[value_length] = '\0'; |
| prop->value_length = value_length; |
| } |
| |
| void grpc_auth_context_add_property(grpc_auth_context* ctx, const char* name, |
| const char* value, size_t value_length) { |
| GRPC_API_TRACE( |
| "grpc_auth_context_add_property(ctx=%p, name=%s, value=%*.*s, " |
| "value_length=%lu)", |
| 6, |
| (ctx, name, (int)value_length, (int)value_length, value, |
| (unsigned long)value_length)); |
| ctx->add_property(name, value, value_length); |
| } |
| |
| void grpc_auth_context::add_cstring_property(const char* name, |
| const char* value) { |
| ensure_capacity(); |
| grpc_auth_property* prop = &properties_.array[properties_.count++]; |
| prop->name = gpr_strdup(name); |
| prop->value = gpr_strdup(value); |
| prop->value_length = strlen(value); |
| } |
| |
| void grpc_auth_context_add_cstring_property(grpc_auth_context* ctx, |
| const char* name, |
| const char* value) { |
| GRPC_API_TRACE( |
| "grpc_auth_context_add_cstring_property(ctx=%p, name=%s, value=%s)", 3, |
| (ctx, name, value)); |
| ctx->add_cstring_property(name, value); |
| } |
| |
| void grpc_auth_property_reset(grpc_auth_property* property) { |
| gpr_free(property->name); |
| gpr_free(property->value); |
| memset(property, 0, sizeof(grpc_auth_property)); |
| } |
| |
| static void auth_context_pointer_arg_destroy(void* p) { |
| if (p != nullptr) { |
| static_cast<grpc_auth_context*>(p)->Unref(DEBUG_LOCATION, |
| "auth_context_pointer_arg"); |
| } |
| } |
| |
| static void* auth_context_pointer_arg_copy(void* p) { |
| auto* ctx = static_cast<grpc_auth_context*>(p); |
| return ctx == nullptr |
| ? nullptr |
| : ctx->Ref(DEBUG_LOCATION, "auth_context_pointer_arg").release(); |
| } |
| |
| static int auth_context_pointer_cmp(void* a, void* b) { return GPR_ICMP(a, b); } |
| |
| static const grpc_arg_pointer_vtable auth_context_pointer_vtable = { |
| auth_context_pointer_arg_copy, auth_context_pointer_arg_destroy, |
| auth_context_pointer_cmp}; |
| |
| grpc_arg grpc_auth_context_to_arg(grpc_auth_context* p) { |
| return grpc_channel_arg_pointer_create((char*)GRPC_AUTH_CONTEXT_ARG, p, |
| &auth_context_pointer_vtable); |
| } |
| |
| grpc_auth_context* grpc_auth_context_from_arg(const grpc_arg* arg) { |
| if (strcmp(arg->key, GRPC_AUTH_CONTEXT_ARG) != 0) return nullptr; |
| if (arg->type != GRPC_ARG_POINTER) { |
| gpr_log(GPR_ERROR, "Invalid type %d for arg %s", arg->type, |
| GRPC_AUTH_CONTEXT_ARG); |
| return nullptr; |
| } |
| return static_cast<grpc_auth_context*>(arg->value.pointer.p); |
| } |
| |
| grpc_auth_context* grpc_find_auth_context_in_args( |
| const grpc_channel_args* args) { |
| size_t i; |
| if (args == nullptr) return nullptr; |
| for (i = 0; i < args->num_args; i++) { |
| grpc_auth_context* p = grpc_auth_context_from_arg(&args->args[i]); |
| if (p != nullptr) return p; |
| } |
| return nullptr; |
| } |