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add checksum functionality
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,35 @@ | ||
| /* This file is the part of the STM32 secure bootloader | ||
| * | ||
| * Copyright ©2016 Dmitry Filimonchuk <dmitrystu[at]gmail[dot]com> | ||
| * Copyright 2019 by Tsien (UK) Ltd. | ||
| * | ||
| * Author: Adrian Carpenter <tech[at]tsien[dot]com> | ||
| * | ||
| * 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. | ||
| * | ||
| */ | ||
|
|
||
| #ifndef _CHECKSUM_H_ | ||
| #define _CHECKSUM_H_ | ||
| #if defined(__cplusplus) | ||
| extern "C" { | ||
| #endif | ||
|
|
||
| #include "config.h" | ||
|
|
||
| const char *checksum_name; | ||
| size_t append_checksum(void *data, uint32_t len); | ||
| size_t validate_checksum(const void *data, uint32_t len); | ||
|
|
||
| #if defined(__cplusplus) | ||
| } | ||
| #endif | ||
| #endif // _CHECKSUM_H_ |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,94 @@ | ||
| /* A minimal POSIX getopt() implementation in ANSI C | ||
| * | ||
| * This is free and unencumbered software released into the public domain. | ||
| * | ||
| * This implementation supports the convention of resetting the option | ||
| * parser by assigning optind to 0. This resets the internal state | ||
| * appropriately. | ||
| * | ||
| * Ref: http://pubs.opengroup.org/onlinepubs/9699919799/functions/getopt.html | ||
| */ | ||
| #ifndef GETOPT_H | ||
| #define GETOPT_H | ||
|
|
||
| #include <ctype.h> | ||
| #include <stdio.h> | ||
| #include <string.h> | ||
|
|
||
| static int optind = 1; | ||
| static int opterr = 1; | ||
| static int optopt; | ||
| static char *optarg; | ||
|
|
||
| static int | ||
| getopt(int argc, char *const argv[], const char *optstring) | ||
| { | ||
| static int optpos = 1; | ||
| const char *arg; | ||
| (void)argc; | ||
|
|
||
| /* Reset? */ | ||
| if (optind == 0) | ||
| { | ||
| optind = 1; | ||
| optpos = 1; | ||
| } | ||
|
|
||
| arg = argv[optind]; | ||
| if (arg && strcmp(arg, "--") == 0) | ||
| { | ||
| optind++; | ||
| return -1; | ||
| } | ||
| else if (!arg || arg[0] != '-' || !isalnum(arg[1])) | ||
| { | ||
| return -1; | ||
| } | ||
| else | ||
| { | ||
| const char *opt = strchr(optstring, arg[optpos]); | ||
| optopt = arg[optpos]; | ||
| if (!opt) | ||
| { | ||
| if (opterr && *optstring != ':') | ||
| fprintf(stderr, "%s: illegal option: %c\n", argv[0], optopt); | ||
| return '?'; | ||
| } | ||
| else if (opt[1] == ':') | ||
| { | ||
| if (arg[optpos + 1]) | ||
| { | ||
| optarg = (char *)arg + optpos + 1; | ||
| optind++; | ||
| optpos = 1; | ||
| return optopt; | ||
| } | ||
| else if (argv[optind + 1]) | ||
| { | ||
| optarg = (char *)argv[optind + 1]; | ||
| optind += 2; | ||
| optpos = 1; | ||
| return optopt; | ||
| } | ||
| else | ||
| { | ||
| if (opterr && *optstring != ':') | ||
| fprintf(stderr, | ||
| "%s: option requires an argument: %c\n", | ||
| argv[0], optopt); | ||
| return *optstring == ':' ? ':' : '?'; | ||
| } | ||
| } | ||
| else | ||
| { | ||
| if (!arg[++optpos]) | ||
| { | ||
| optind++; | ||
| optpos = 1; | ||
| } | ||
| return optopt; | ||
| } | ||
| } | ||
| } | ||
|
|
||
| #endif |
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