1 /*
2  * Copyright 2018 Google Inc.
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *     http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 #include "updater.hpp"
18 
19 #include "blob_errors.hpp"
20 #include "tool_errors.hpp"
21 
22 #include <algorithm>
23 #include <memory>
24 
25 void updaterMain(BlobInterface* blob, DataInterface* handler,
26                  const std::string& imagePath, const std::string& signaturePath)
27 {
28     /* TODO(venture): Add optional parameter to specify the flash type, default
29      * to legacy for now.
30      */
31     std::string goalFirmware = "/flash/image";
32 
33     /* Get list of blob_ids, check for /flash/image, or /flash/tarball.
34      * TODO(venture) the mechanism doesn't care, but the caller of burn_my_bmc
35      * will have in mind which they're sending and we need to verify it's
36      * available and use it.
37      */
38     std::vector<std::string> blobs = blob->getBlobList();
39     auto blobInst = std::find(blobs.begin(), blobs.end(), goalFirmware);
40     if (blobInst == blobs.end())
41     {
42         throw ToolException(goalFirmware + " not found");
43     }
44 
45     /* Call stat on /flash/image (or /flash/tarball) and check if data interface
46      * is supported.
47      */
48     auto stat = blob->getStat(goalFirmware);
49     auto supported = handler->supportedType();
50     if ((stat.blob_state & supported) == 0)
51     {
52         throw ToolException("data interface selected not supported.");
53     }
54 
55     /* Yay, our data handler is supported. */
56     std::uint16_t session;
57     try
58     {
59         session = blob->openBlob(goalFirmware, supported);
60     }
61     catch (const BlobException& b)
62     {
63         throw ToolException("blob exception received: " +
64                             std::string(b.what()));
65     }
66 
67     std::fprintf(stderr, "using session: %d\n", session);
68 
69     /* Send over the firmware image. */
70     if (!handler->sendContents(imagePath, session))
71     {
72         throw ToolException("Failed to send contents of " + imagePath);
73     }
74 
75     /* Send over the hash contents. */
76     /* Trigger the verification. */
77     /* Check the verification. */
78 
79     return;
80 }
81