1d33095500
Fix unused return values, cast to void if on purpose
844 lines
17 KiB
C
844 lines
17 KiB
C
/**
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* WinPR: Windows Portable Runtime
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* Command-Line Utils
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*
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* Copyright 2012 Marc-Andre Moreau <marcandre.moreau@gmail.com>
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <winpr/config.h>
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#include <winpr/crt.h>
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#include <winpr/assert.h>
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#include <winpr/cmdline.h>
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#include "../log.h"
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#define TAG WINPR_TAG("commandline")
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/**
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* Command-line syntax: some basic concepts:
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* https://pythonconquerstheuniverse.wordpress.com/2010/07/25/command-line-syntax-some-basic-concepts/
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*/
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/**
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* Command-Line Syntax:
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*
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* <sigil><keyword><separator><value>
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*
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* <sigil>: '/' or '-' or ('+' | '-')
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*
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* <keyword>: option, named argument, flag
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*
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* <separator>: ':' or '='
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*
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* <value>: argument value
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*
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*/
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static void log_error(DWORD flags, LPCSTR message, int index, LPCSTR argv)
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{
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if ((flags & COMMAND_LINE_SILENCE_PARSER) == 0)
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WLog_ERR(TAG, message, index, argv);
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}
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int CommandLineParseArgumentsA(int argc, LPSTR* argv, COMMAND_LINE_ARGUMENT_A* options, DWORD flags,
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void* context, COMMAND_LINE_PRE_FILTER_FN_A preFilter,
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COMMAND_LINE_POST_FILTER_FN_A postFilter)
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{
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int status = 0;
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int count = 0;
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size_t length = 0;
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BOOL notescaped = FALSE;
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const char* sigil = NULL;
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size_t sigil_length = 0;
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char* keyword = NULL;
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size_t keyword_length = 0;
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SSIZE_T keyword_index = 0;
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char* separator = NULL;
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char* value = NULL;
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int toggle = 0;
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if (!argv)
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return status;
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if (argc == 1)
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{
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if (flags & COMMAND_LINE_IGN_UNKNOWN_KEYWORD)
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status = 0;
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else
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status = COMMAND_LINE_STATUS_PRINT_HELP;
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return status;
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}
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for (int i = 1; i < argc; i++)
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{
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BOOL found = FALSE;
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BOOL escaped = TRUE;
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if (preFilter)
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{
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count = preFilter(context, i, argc, argv);
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if (count < 0)
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{
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log_error(flags, "Failed for index %d [%s]: PreFilter rule could not be applied", i,
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argv[i]);
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status = COMMAND_LINE_ERROR;
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return status;
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}
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if (count > 0)
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{
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i += (count - 1);
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continue;
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}
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}
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sigil = argv[i];
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length = strlen(argv[i]);
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if ((sigil[0] == '/') && (flags & COMMAND_LINE_SIGIL_SLASH))
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{
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sigil_length = 1;
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}
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else if ((sigil[0] == '-') && (flags & COMMAND_LINE_SIGIL_DASH))
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{
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sigil_length = 1;
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if (length > 2)
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{
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if ((sigil[1] == '-') && (flags & COMMAND_LINE_SIGIL_DOUBLE_DASH))
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sigil_length = 2;
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}
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}
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else if ((sigil[0] == '+') && (flags & COMMAND_LINE_SIGIL_PLUS_MINUS))
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{
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sigil_length = 1;
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}
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else if ((sigil[0] == '-') && (flags & COMMAND_LINE_SIGIL_PLUS_MINUS))
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{
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sigil_length = 1;
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}
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else if (flags & COMMAND_LINE_SIGIL_NONE)
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{
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sigil_length = 0;
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}
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else if (flags & COMMAND_LINE_SIGIL_NOT_ESCAPED)
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{
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if (notescaped)
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{
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log_error(flags, "Failed at index %d [%s]: Unescaped sigil", i, argv[i]);
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return COMMAND_LINE_ERROR;
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}
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sigil_length = 0;
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escaped = FALSE;
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notescaped = TRUE;
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}
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else
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{
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log_error(flags, "Failed at index %d [%s]: Invalid sigil", i, argv[i]);
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return COMMAND_LINE_ERROR;
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}
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if ((sigil_length > 0) || (flags & COMMAND_LINE_SIGIL_NONE) ||
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(flags & COMMAND_LINE_SIGIL_NOT_ESCAPED))
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{
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if (length < (sigil_length + 1))
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{
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if ((flags & COMMAND_LINE_IGN_UNKNOWN_KEYWORD))
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continue;
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return COMMAND_LINE_ERROR_NO_KEYWORD;
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}
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keyword_index = sigil_length;
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keyword = &argv[i][keyword_index];
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toggle = -1;
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if (flags & COMMAND_LINE_SIGIL_ENABLE_DISABLE)
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{
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if (strncmp(keyword, "enable-", 7) == 0)
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{
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toggle = TRUE;
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keyword_index += 7;
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keyword = &argv[i][keyword_index];
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}
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else if (strncmp(keyword, "disable-", 8) == 0)
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{
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toggle = FALSE;
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keyword_index += 8;
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keyword = &argv[i][keyword_index];
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}
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}
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separator = NULL;
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if ((flags & COMMAND_LINE_SEPARATOR_COLON) && (!separator))
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separator = strchr(keyword, ':');
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if ((flags & COMMAND_LINE_SEPARATOR_EQUAL) && (!separator))
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separator = strchr(keyword, '=');
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if (separator)
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{
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SSIZE_T separator_index = (separator - argv[i]);
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SSIZE_T value_index = separator_index + 1;
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keyword_length = (separator - keyword);
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value = &argv[i][value_index];
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}
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else
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{
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keyword_length = (length - keyword_index);
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value = NULL;
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}
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if (!escaped)
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continue;
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for (int j = 0; options[j].Name != NULL; j++)
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{
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COMMAND_LINE_ARGUMENT_A* cur = &options[j];
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BOOL match = FALSE;
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if (strncmp(cur->Name, keyword, keyword_length) == 0)
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{
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if (strlen(cur->Name) == keyword_length)
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match = TRUE;
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}
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if ((!match) && (cur->Alias != NULL))
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{
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if (strncmp(cur->Alias, keyword, keyword_length) == 0)
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{
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if (strlen(cur->Alias) == keyword_length)
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match = TRUE;
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}
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}
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if (!match)
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continue;
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found = match;
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cur->Index = i;
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if ((flags & COMMAND_LINE_SEPARATOR_SPACE) && ((i + 1) < argc))
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{
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BOOL argument = 0;
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int value_present = 1;
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if (flags & COMMAND_LINE_SIGIL_DASH)
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{
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if (strncmp(argv[i + 1], "-", 1) == 0)
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value_present = 0;
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}
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if (flags & COMMAND_LINE_SIGIL_DOUBLE_DASH)
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{
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if (strncmp(argv[i + 1], "--", 2) == 0)
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value_present = 0;
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}
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if (flags & COMMAND_LINE_SIGIL_SLASH)
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{
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if (strncmp(argv[i + 1], "/", 1) == 0)
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value_present = 0;
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}
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if ((cur->Flags & COMMAND_LINE_VALUE_REQUIRED) ||
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(cur->Flags & COMMAND_LINE_VALUE_OPTIONAL))
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argument = TRUE;
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else
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argument = FALSE;
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if (value_present && argument)
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{
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i++;
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value = argv[i];
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}
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else if (!value_present && (cur->Flags & COMMAND_LINE_VALUE_OPTIONAL))
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{
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value = NULL;
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}
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else if (!value_present && argument)
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{
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log_error(flags, "Failed at index %d [%s]: Argument required", i, argv[i]);
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return COMMAND_LINE_ERROR;
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}
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}
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if (!(flags & COMMAND_LINE_SEPARATOR_SPACE))
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{
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if (value && (cur->Flags & COMMAND_LINE_VALUE_FLAG))
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{
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log_error(flags, "Failed at index %d [%s]: Unexpected value", i, argv[i]);
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return COMMAND_LINE_ERROR_UNEXPECTED_VALUE;
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}
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}
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else
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{
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if (value && (cur->Flags & COMMAND_LINE_VALUE_FLAG))
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{
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i--;
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value = NULL;
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}
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}
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if (!value && (cur->Flags & COMMAND_LINE_VALUE_REQUIRED))
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{
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log_error(flags, "Failed at index %d [%s]: Missing value", i, argv[i]);
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status = COMMAND_LINE_ERROR_MISSING_VALUE;
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return status;
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}
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cur->Flags |= COMMAND_LINE_ARGUMENT_PRESENT;
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if (value)
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{
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if (!(cur->Flags & (COMMAND_LINE_VALUE_OPTIONAL | COMMAND_LINE_VALUE_REQUIRED)))
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{
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log_error(flags, "Failed at index %d [%s]: Unexpected value", i, argv[i]);
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return COMMAND_LINE_ERROR_UNEXPECTED_VALUE;
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}
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cur->Value = value;
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cur->Flags |= COMMAND_LINE_VALUE_PRESENT;
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}
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else
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{
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if (cur->Flags & COMMAND_LINE_VALUE_FLAG)
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{
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cur->Value = (LPSTR)1;
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cur->Flags |= COMMAND_LINE_VALUE_PRESENT;
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}
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else if (cur->Flags & COMMAND_LINE_VALUE_BOOL)
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{
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if (flags & COMMAND_LINE_SIGIL_ENABLE_DISABLE)
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{
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if (toggle == -1)
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cur->Value = BoolValueTrue;
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else if (!toggle)
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cur->Value = BoolValueFalse;
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else
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cur->Value = BoolValueTrue;
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}
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else
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{
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if (sigil[0] == '+')
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cur->Value = BoolValueTrue;
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else if (sigil[0] == '-')
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cur->Value = BoolValueFalse;
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else
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cur->Value = BoolValueTrue;
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}
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cur->Flags |= COMMAND_LINE_VALUE_PRESENT;
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}
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}
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if (postFilter)
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{
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count = postFilter(context, &options[j]);
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if (count < 0)
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{
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log_error(flags,
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"Failed at index %d [%s]: PostFilter rule could not be applied",
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i, argv[i]);
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status = COMMAND_LINE_ERROR;
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return status;
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}
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}
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if (cur->Flags & COMMAND_LINE_PRINT)
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return COMMAND_LINE_STATUS_PRINT;
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else if (cur->Flags & COMMAND_LINE_PRINT_HELP)
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return COMMAND_LINE_STATUS_PRINT_HELP;
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else if (cur->Flags & COMMAND_LINE_PRINT_VERSION)
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return COMMAND_LINE_STATUS_PRINT_VERSION;
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else if (cur->Flags & COMMAND_LINE_PRINT_BUILDCONFIG)
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return COMMAND_LINE_STATUS_PRINT_BUILDCONFIG;
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}
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if (!found && (flags & COMMAND_LINE_IGN_UNKNOWN_KEYWORD) == 0)
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{
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log_error(flags, "Failed at index %d [%s]: Unexpected keyword", i, argv[i]);
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return COMMAND_LINE_ERROR_NO_KEYWORD;
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}
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}
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}
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return status;
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}
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int CommandLineParseArgumentsW(int argc, LPWSTR* argv, COMMAND_LINE_ARGUMENT_W* options,
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DWORD flags, void* context, COMMAND_LINE_PRE_FILTER_FN_W preFilter,
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COMMAND_LINE_POST_FILTER_FN_W postFilter)
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{
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return 0;
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}
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int CommandLineClearArgumentsA(COMMAND_LINE_ARGUMENT_A* options)
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{
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for (size_t i = 0; options[i].Name != NULL; i++)
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{
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options[i].Flags &= COMMAND_LINE_INPUT_FLAG_MASK;
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options[i].Value = NULL;
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}
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return 0;
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}
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int CommandLineClearArgumentsW(COMMAND_LINE_ARGUMENT_W* options)
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{
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for (int i = 0; options[i].Name != NULL; i++)
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{
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options[i].Flags &= COMMAND_LINE_INPUT_FLAG_MASK;
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options[i].Value = NULL;
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}
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return 0;
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}
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const COMMAND_LINE_ARGUMENT_A* CommandLineFindArgumentA(const COMMAND_LINE_ARGUMENT_A* options,
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LPCSTR Name)
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{
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WINPR_ASSERT(options);
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WINPR_ASSERT(Name);
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for (size_t i = 0; options[i].Name != NULL; i++)
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{
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if (strcmp(options[i].Name, Name) == 0)
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return &options[i];
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if (options[i].Alias != NULL)
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{
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if (strcmp(options[i].Alias, Name) == 0)
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return &options[i];
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}
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}
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return NULL;
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}
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const COMMAND_LINE_ARGUMENT_W* CommandLineFindArgumentW(const COMMAND_LINE_ARGUMENT_W* options,
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LPCWSTR Name)
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{
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WINPR_ASSERT(options);
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WINPR_ASSERT(Name);
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for (size_t i = 0; options[i].Name != NULL; i++)
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{
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if (_wcscmp(options[i].Name, Name) == 0)
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return &options[i];
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if (options[i].Alias != NULL)
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{
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if (_wcscmp(options[i].Alias, Name) == 0)
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return &options[i];
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}
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}
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return NULL;
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}
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const COMMAND_LINE_ARGUMENT_A* CommandLineFindNextArgumentA(const COMMAND_LINE_ARGUMENT_A* argument)
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{
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const COMMAND_LINE_ARGUMENT_A* nextArgument = NULL;
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if (!argument || !argument->Name)
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return NULL;
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nextArgument = &argument[1];
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if (nextArgument->Name == NULL)
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return NULL;
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return nextArgument;
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}
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static int is_quoted(char c)
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{
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switch (c)
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{
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case '"':
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return 1;
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case '\'':
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return -1;
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default:
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return 0;
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}
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}
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static size_t get_element_count(const char* list, BOOL* failed, BOOL fullquoted)
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{
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size_t count = 0;
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int quoted = 0;
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BOOL finished = FALSE;
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BOOL first = TRUE;
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const char* it = list;
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if (!list)
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return 0;
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if (strlen(list) == 0)
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return 0;
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|
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while (!finished)
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{
|
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BOOL nextFirst = FALSE;
|
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switch (*it)
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{
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case '\0':
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if (quoted != 0)
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{
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WLog_ERR(TAG, "Invalid argument (missing closing quote) '%s'", list);
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*failed = TRUE;
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return 0;
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}
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finished = TRUE;
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break;
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case '\'':
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|
case '"':
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if (!fullquoted)
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{
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int now = is_quoted(*it);
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if (now == quoted)
|
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quoted = 0;
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else if (quoted == 0)
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quoted = now;
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}
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break;
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case ',':
|
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if (first)
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{
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WLog_ERR(TAG, "Invalid argument (empty list elements) '%s'", list);
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*failed = TRUE;
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return 0;
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}
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if (quoted == 0)
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{
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nextFirst = TRUE;
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count++;
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}
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break;
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default:
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break;
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}
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first = nextFirst;
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it++;
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}
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return count + 1;
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}
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static char* get_next_comma(char* string, BOOL fullquoted)
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{
|
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const char* log = string;
|
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int quoted = 0;
|
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BOOL first = TRUE;
|
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|
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WINPR_ASSERT(string);
|
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|
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while (TRUE)
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{
|
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switch (*string)
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|
{
|
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case '\0':
|
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if (quoted != 0)
|
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WLog_ERR(TAG, "Invalid quoted argument '%s'", log);
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return NULL;
|
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|
|
case '\'':
|
|
case '"':
|
|
if (!fullquoted)
|
|
{
|
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int now = is_quoted(*string);
|
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if ((quoted == 0) && !first)
|
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{
|
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WLog_ERR(TAG, "Invalid quoted argument '%s'", log);
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return NULL;
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}
|
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if (now == quoted)
|
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quoted = 0;
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else if (quoted == 0)
|
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quoted = now;
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}
|
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break;
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|
|
|
case ',':
|
|
if (first)
|
|
{
|
|
WLog_ERR(TAG, "Invalid argument (empty list elements) '%s'", log);
|
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return NULL;
|
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}
|
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if (quoted == 0)
|
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return string;
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break;
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|
|
|
default:
|
|
break;
|
|
}
|
|
first = FALSE;
|
|
string++;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static BOOL is_valid_fullquoted(const char* string)
|
|
{
|
|
char cur = '\0';
|
|
char last = '\0';
|
|
const char quote = *string++;
|
|
|
|
/* We did not start with a quote. */
|
|
if (is_quoted(quote) == 0)
|
|
return FALSE;
|
|
|
|
while ((cur = *string++) != '\0')
|
|
{
|
|
/* A quote is found. */
|
|
if (cur == quote)
|
|
{
|
|
/* If the quote was escaped, it is valid. */
|
|
if (last != '\\')
|
|
{
|
|
/* Only allow unescaped quote as last character in string. */
|
|
if (*string != '\0')
|
|
return FALSE;
|
|
}
|
|
/* If the last quote in the string is escaped, it is wrong. */
|
|
else if (*string != '\0')
|
|
return FALSE;
|
|
}
|
|
last = cur;
|
|
}
|
|
|
|
/* The string did not terminate with the same quote as it started. */
|
|
if (last != quote)
|
|
return FALSE;
|
|
return TRUE;
|
|
}
|
|
|
|
char** CommandLineParseCommaSeparatedValuesEx(const char* name, const char* list, size_t* count)
|
|
{
|
|
char** p = NULL;
|
|
char* str = NULL;
|
|
size_t nArgs = 0;
|
|
size_t prefix = 0;
|
|
size_t len = 0;
|
|
size_t namelen = 0;
|
|
BOOL failed = FALSE;
|
|
char* copy = NULL;
|
|
char* unquoted = NULL;
|
|
BOOL fullquoted = FALSE;
|
|
|
|
BOOL success = FALSE;
|
|
if (count == NULL)
|
|
goto fail;
|
|
|
|
*count = 0;
|
|
if (list)
|
|
{
|
|
int start = 0;
|
|
int end = 0;
|
|
unquoted = copy = _strdup(list);
|
|
if (!copy)
|
|
goto fail;
|
|
|
|
len = strlen(unquoted);
|
|
if (len > 0)
|
|
{
|
|
start = is_quoted(unquoted[0]);
|
|
end = is_quoted(unquoted[len - 1]);
|
|
|
|
if ((start != 0) && (end != 0))
|
|
{
|
|
if (start != end)
|
|
{
|
|
WLog_ERR(TAG, "invalid argument (quote mismatch) '%s'", list);
|
|
goto fail;
|
|
}
|
|
if (!is_valid_fullquoted(unquoted))
|
|
goto fail;
|
|
unquoted[len - 1] = '\0';
|
|
unquoted++;
|
|
len -= 2;
|
|
fullquoted = TRUE;
|
|
}
|
|
}
|
|
}
|
|
|
|
*count = get_element_count(unquoted, &failed, fullquoted);
|
|
if (failed)
|
|
goto fail;
|
|
|
|
if (*count == 0)
|
|
{
|
|
if (!name)
|
|
goto fail;
|
|
else
|
|
{
|
|
size_t clen = strlen(name);
|
|
p = (char**)calloc(2UL + clen, sizeof(char*));
|
|
|
|
if (p)
|
|
{
|
|
char* dst = (char*)&p[1];
|
|
p[0] = dst;
|
|
(void)sprintf_s(dst, clen + 1, "%s", name);
|
|
*count = 1;
|
|
success = TRUE;
|
|
goto fail;
|
|
}
|
|
}
|
|
}
|
|
|
|
nArgs = *count;
|
|
|
|
if (name)
|
|
nArgs++;
|
|
|
|
prefix = (nArgs + 1UL) * sizeof(char*);
|
|
if (name)
|
|
namelen = strlen(name);
|
|
p = (char**)calloc(len + prefix + 1 + namelen + 1, sizeof(char*));
|
|
|
|
if (!p)
|
|
goto fail;
|
|
|
|
str = &((char*)p)[prefix];
|
|
memcpy(str, unquoted, len);
|
|
|
|
if (name)
|
|
{
|
|
char* namestr = &((char*)p)[prefix + len + 1];
|
|
memcpy(namestr, name, namelen);
|
|
|
|
p[0] = namestr;
|
|
}
|
|
|
|
for (size_t index = name ? 1 : 0; index < nArgs; index++)
|
|
{
|
|
char* ptr = str;
|
|
const int quote = is_quoted(*ptr);
|
|
char* comma = get_next_comma(str, fullquoted);
|
|
|
|
if ((quote != 0) && !fullquoted)
|
|
ptr++;
|
|
|
|
p[index] = ptr;
|
|
|
|
if (comma)
|
|
{
|
|
char* last = comma - 1;
|
|
const int lastQuote = is_quoted(*last);
|
|
|
|
if (!fullquoted)
|
|
{
|
|
if (lastQuote != quote)
|
|
{
|
|
WLog_ERR(TAG, "invalid argument (quote mismatch) '%s'", list);
|
|
goto fail;
|
|
}
|
|
else if (lastQuote != 0)
|
|
*last = '\0';
|
|
}
|
|
*comma = '\0';
|
|
|
|
str = comma + 1;
|
|
}
|
|
else if (quote)
|
|
{
|
|
char* end = strrchr(ptr, '"');
|
|
if (!end)
|
|
goto fail;
|
|
*end = '\0';
|
|
}
|
|
}
|
|
|
|
*count = nArgs;
|
|
success = TRUE;
|
|
fail:
|
|
free(copy);
|
|
if (!success)
|
|
{
|
|
if (count)
|
|
*count = 0;
|
|
free(p);
|
|
return NULL;
|
|
}
|
|
return p;
|
|
}
|
|
|
|
char** CommandLineParseCommaSeparatedValues(const char* list, size_t* count)
|
|
{
|
|
return CommandLineParseCommaSeparatedValuesEx(NULL, list, count);
|
|
}
|
|
|
|
char* CommandLineToCommaSeparatedValues(int argc, char* argv[])
|
|
{
|
|
return CommandLineToCommaSeparatedValuesEx(argc, argv, NULL, 0);
|
|
}
|
|
|
|
static const char* filtered(const char* arg, const char* filters[], size_t number)
|
|
{
|
|
if (number == 0)
|
|
return arg;
|
|
for (size_t x = 0; x < number; x++)
|
|
{
|
|
const char* filter = filters[x];
|
|
size_t len = strlen(filter);
|
|
if (_strnicmp(arg, filter, len) == 0)
|
|
return &arg[len];
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
char* CommandLineToCommaSeparatedValuesEx(int argc, char* argv[], const char* filters[],
|
|
size_t number)
|
|
{
|
|
char* str = NULL;
|
|
size_t offset = 0;
|
|
size_t size = argc + 1;
|
|
if ((argc <= 0) || !argv)
|
|
return NULL;
|
|
|
|
for (int x = 0; x < argc; x++)
|
|
size += strlen(argv[x]);
|
|
|
|
str = calloc(size, sizeof(char));
|
|
if (!str)
|
|
return NULL;
|
|
for (int x = 0; x < argc; x++)
|
|
{
|
|
int rc = 0;
|
|
const char* arg = filtered(argv[x], filters, number);
|
|
if (!arg)
|
|
continue;
|
|
rc = _snprintf(&str[offset], size - offset, "%s,", arg);
|
|
if (rc <= 0)
|
|
{
|
|
free(str);
|
|
return NULL;
|
|
}
|
|
offset += (size_t)rc;
|
|
}
|
|
if (offset > 0)
|
|
str[offset - 1] = '\0';
|
|
return str;
|
|
}
|