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gen_test_char.c
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Editing: gen_test_char.c
/* Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You 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. */ #if defined(WIN32) || defined(OS2) #define NEED_ENHANCED_ESCAPES #endif #include <stdio.h> #include <string.h> #include <stdio.h> #include <ctype.h> /* A bunch of functions in util.c scan strings looking for certain characters. * To make that more efficient we encode a lookup table. */ #define T_ESCAPE_SHELL_CMD (0x01) #define T_ESCAPE_PATH_SEGMENT (0x02) #define T_OS_ESCAPE_PATH (0x04) #define T_ESCAPE_ECHO (0x08) #define T_ESCAPE_URLENCODED (0x10) #define T_ESCAPE_XML (0x20) #define T_ESCAPE_LDAP_DN (0x40) #define T_ESCAPE_LDAP_FILTER (0x80) int main(int argc, char *argv[]) { unsigned c; unsigned char flags; printf("/* this file is automatically generated by gen_test_char, " "do not edit. \"make include/private/apr_escape_test_char.h\" to regenerate. */\n" "#define T_ESCAPE_SHELL_CMD (%u)\n" "#define T_ESCAPE_PATH_SEGMENT (%u)\n" "#define T_OS_ESCAPE_PATH (%u)\n" "#define T_ESCAPE_ECHO (%u)\n" "#define T_ESCAPE_URLENCODED (%u)\n" "#define T_ESCAPE_XML (%u)\n" "#define T_ESCAPE_LDAP_DN (%u)\n" "#define T_ESCAPE_LDAP_FILTER (%u)\n" "\n" "static const unsigned char test_char_table[256] = {", T_ESCAPE_SHELL_CMD, T_ESCAPE_PATH_SEGMENT, T_OS_ESCAPE_PATH, T_ESCAPE_ECHO, T_ESCAPE_URLENCODED, T_ESCAPE_XML, T_ESCAPE_LDAP_DN, T_ESCAPE_LDAP_FILTER); for (c = 0; c < 256; ++c) { flags = 0; if (c % 20 == 0) printf("\n "); /* escape_shell_cmd */ #ifdef NEED_ENHANCED_ESCAPES /* Win32/OS2 have many of the same vulnerable characters * as Unix sh, plus the carriage return and percent char. * The proper escaping of these characters varies from unix * since Win32/OS2 use carets or doubled-double quotes, * and neither lf nor cr can be escaped. We escape unix * specific as well, to assure that cross-compiled unix * applications behave similiarly when invoked on win32/os2. * * Rem please keep in-sync with apr's list in win32/filesys.c */ if (c && strchr("&;`'\"|*?~<>^()[]{}$\\\n\r%", c)) { flags |= T_ESCAPE_SHELL_CMD; } #else if (c && strchr("&;`'\"|*?~<>^()[]{}$\\\n", c)) { flags |= T_ESCAPE_SHELL_CMD; } #endif if (!isalnum(c) && !strchr("$-_.+!*'(),:@&=~", c)) { flags |= T_ESCAPE_PATH_SEGMENT; } if (!isalnum(c) && !strchr("$-_.+!*'(),:@&=/~", c)) { flags |= T_OS_ESCAPE_PATH; } if (!isalnum(c) && !strchr(".-*_ ", c)) { flags |= T_ESCAPE_URLENCODED; } /* For logging, escape all control characters, * double quotes (because they delimit the request in the log file) * backslashes (because we use backslash for escaping) * and 8-bit chars with the high bit set */ if (c && (!isprint(c) || c == '"' || c == '\\' || iscntrl(c))) { flags |= T_ESCAPE_ECHO; } if (strchr("<>&\"", c)) { flags |= T_ESCAPE_XML; } /* LDAP DN escaping (RFC4514) */ if (!isprint(c) || strchr("\"+,;<>\\", c)) { flags |= T_ESCAPE_LDAP_DN; } /* LDAP filter escaping (RFC4515) */ if (!isprint(c) || strchr("*()\\", c)) { flags |= T_ESCAPE_LDAP_FILTER; } printf("%u%c", flags, (c < 255) ? ',' : ' '); } printf("\n};\n"); return 0; }
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