116 lines
3.9 KiB
C
116 lines
3.9 KiB
C
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/* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. 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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#if defined(WIN32) || defined(OS2)
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#define NEED_ENHANCED_ESCAPES
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#endif
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#include <stdio.h>
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#include <string.h>
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#include <stdio.h>
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#include <ctype.h>
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/* A bunch of functions in util.c scan strings looking for certain characters.
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* To make that more efficient we encode a lookup table.
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*/
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#define T_ESCAPE_SHELL_CMD (0x01)
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#define T_ESCAPE_PATH_SEGMENT (0x02)
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#define T_OS_ESCAPE_PATH (0x04)
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#define T_ESCAPE_ECHO (0x08)
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#define T_ESCAPE_URLENCODED (0x10)
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#define T_ESCAPE_XML (0x20)
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int main(int argc, char *argv[])
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{
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unsigned c;
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unsigned char flags;
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printf("/* this file is automatically generated by gen_test_char, "
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"do not edit. \"make include/private/apr_escape_test_char.h\" to regenerate. */\n"
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"#define T_ESCAPE_SHELL_CMD (%u)\n"
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"#define T_ESCAPE_PATH_SEGMENT (%u)\n"
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"#define T_OS_ESCAPE_PATH (%u)\n"
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"#define T_ESCAPE_ECHO (%u)\n"
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"#define T_ESCAPE_URLENCODED (%u)\n"
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"#define T_ESCAPE_XML (%u)\n"
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"\n"
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"static const unsigned char test_char_table[256] = {",
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T_ESCAPE_SHELL_CMD,
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T_ESCAPE_PATH_SEGMENT,
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T_OS_ESCAPE_PATH,
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T_ESCAPE_ECHO,
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T_ESCAPE_URLENCODED,
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T_ESCAPE_XML);
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for (c = 0; c < 256; ++c) {
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flags = 0;
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if (c % 20 == 0)
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printf("\n ");
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/* escape_shell_cmd */
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#ifdef NEED_ENHANCED_ESCAPES
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/* Win32/OS2 have many of the same vulnerable characters
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* as Unix sh, plus the carriage return and percent char.
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* The proper escaping of these characters varies from unix
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* since Win32/OS2 use carets or doubled-double quotes,
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* and neither lf nor cr can be escaped. We escape unix
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* specific as well, to assure that cross-compiled unix
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* applications behave similiarly when invoked on win32/os2.
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*
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* Rem please keep in-sync with apr's list in win32/filesys.c
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*/
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if (c && strchr("&;`'\"|*?~<>^()[]{}$\\\n\r%", c)) {
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flags |= T_ESCAPE_SHELL_CMD;
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}
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#else
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if (c && strchr("&;`'\"|*?~<>^()[]{}$\\\n", c)) {
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flags |= T_ESCAPE_SHELL_CMD;
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}
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#endif
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if (!isalnum(c) && !strchr("$-_.+!*'(),:@&=~", c)) {
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flags |= T_ESCAPE_PATH_SEGMENT;
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}
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if (!isalnum(c) && !strchr("$-_.+!*'(),:@&=/~", c)) {
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flags |= T_OS_ESCAPE_PATH;
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}
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if (!isalnum(c) && !strchr(".-*_ ", c)) {
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flags |= T_ESCAPE_URLENCODED;
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}
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/* For logging, escape all control characters,
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* double quotes (because they delimit the request in the log file)
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* backslashes (because we use backslash for escaping)
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* and 8-bit chars with the high bit set
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*/
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if (c && (!isprint(c) || c == '"' || c == '\\' || iscntrl(c))) {
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flags |= T_ESCAPE_ECHO;
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}
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if (strchr("<>&\"", c)) {
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flags |= T_ESCAPE_XML;
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}
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printf("%u%c", flags, (c < 255) ? ',' : ' ');
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}
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printf("\n};\n");
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return 0;
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}
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