| /* 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. |
| */ |
| |
| #ifdef CROSS_COMPILE |
| |
| #define apr_isalnum(c) (isalnum(((unsigned char)(c)))) |
| #define apr_isalpha(c) (isalpha(((unsigned char)(c)))) |
| #define apr_iscntrl(c) (iscntrl(((unsigned char)(c)))) |
| #define apr_isprint(c) (isprint(((unsigned char)(c)))) |
| #define apr_isascii(c) (isascii(((unsigned char)(c)))) |
| #include <ctype.h> |
| #define APR_HAVE_STDIO_H 1 |
| #define APR_HAVE_STRING_H 1 |
| |
| #else |
| |
| #include "apr.h" |
| #include "apr_lib.h" |
| |
| #endif |
| |
| #if APR_CHARSET_EBCDIC |
| /* See util.c for complete explanation of this table */ |
| static const short ucharmap[] = { |
| 0x00, 0x01, 0x02, 0x03, 0x9C, 0x09, 0x86, 0x7F, |
| 0x97, 0x8D, 0x8E, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, |
| 0x10, 0x11, 0x12, 0x13, 0x9D, 0x85, 0x08, 0x87, |
| 0x18, 0x19, 0x92, 0x8F, 0x1C, 0x1D, 0x1E, 0x1F, |
| 0x80, 0x81, 0x82, 0x83, 0x84, 0x0A, 0x17, 0x1B, |
| 0x88, 0x89, 0x8A, 0x8B, 0x8C, 0x05, 0x06, 0x07, |
| 0x90, 0x91, 0x16, 0x93, 0x94, 0x95, 0x96, 0x04, |
| 0x98, 0x99, 0x9A, 0x9B, 0x14, 0x15, 0x9E, 0x1A, |
| 0x20, 0xA0, 0xE2, 0xE4, 0xE0, 0xE1, 0xE3, 0xE5, |
| 0xE7, 0xF1, 0xA2, 0x2E, 0x3C, 0x28, 0x2B, 0x7C, |
| 0x26, 0xE9, 0xEA, 0xEB, 0xE8, 0xED, 0xEE, 0xEF, |
| 0xEC, 0xDF, 0x21, 0x24, 0x2A, 0x29, 0x3B, 0xAC, |
| 0x2D, 0x2F, 0xC2, 0xC4, 0xC0, 0xC1, 0xC3, 0xC5, |
| 0xC7, 0xD1, 0xA6, 0x2C, 0x25, 0x5F, 0x3E, 0x3F, |
| 0xF8, 0xC9, 0xCA, 0xCB, 0xC8, 0xCD, 0xCE, 0xCF, |
| 0xCC, 0x60, 0x3A, 0x23, 0x40, 0x27, 0x3D, 0x22, |
| 0xD8, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, |
| 0x68, 0x69, 0xAB, 0xBB, 0xF0, 0xFD, 0xFE, 0xB1, |
| 0xB0, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E, 0x6F, 0x70, |
| 0x71, 0x72, 0xAA, 0xBA, 0xE6, 0xB8, 0xC6, 0xA4, |
| 0xB5, 0x7E, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, |
| 0x79, 0x7A, 0xA1, 0xBF, 0xD0, 0xDD, 0xDE, 0xAE, |
| 0x5E, 0xA3, 0xA5, 0xB7, 0xA9, 0xA7, 0xB6, 0xBC, |
| 0xBD, 0xBE, 0x5B, 0x5D, 0xAF, 0xA8, 0xB4, 0xD7, |
| 0x7B, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, |
| 0x68, 0x69, 0xAD, 0xF4, 0xF6, 0xF2, 0xF3, 0xF5, |
| 0x7D, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E, 0x6F, 0x70, |
| 0x71, 0x72, 0xB9, 0xFB, 0xFC, 0xF9, 0xFA, 0xFF, |
| 0x5C, 0xF7, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, |
| 0x79, 0x7A, 0xB2, 0xD4, 0xD6, 0xD2, 0xD3, 0xD5, |
| 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, |
| 0x38, 0x39, 0xB3, 0xDB, 0xDC, 0xD9, 0xDA, 0x9F |
| }; |
| #define test_isascii_equiv(c) ((ucharmap[(unsigned char)c] & ~0x7f) == 0) |
| #else |
| #define test_isascii_equiv(c) apr_isascii(c) |
| #endif |
| |
| |
| #if defined(WIN32) || defined(OS2) |
| #define NEED_ENHANCED_ESCAPES |
| #endif |
| |
| #if APR_HAVE_STDIO_H |
| #include <stdio.h> |
| #endif |
| #if APR_HAVE_STRING_H |
| #include <string.h> |
| #endif |
| |
| /* 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_HTTP_TOKEN_STOP (0x08) |
| #define T_ESCAPE_LOGITEM (0x10) |
| #define T_ESCAPE_FORENSIC (0x20) |
| #define T_ESCAPE_URLENCODED (0x40) |
| #define T_HTTP_CTRLS (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 */\n" |
| "#define T_ESCAPE_SHELL_CMD (%u)\n" |
| "#define T_ESCAPE_PATH_SEGMENT (%u)\n" |
| "#define T_OS_ESCAPE_PATH (%u)\n" |
| "#define T_HTTP_TOKEN_STOP (%u)\n" |
| "#define T_ESCAPE_LOGITEM (%u)\n" |
| "#define T_ESCAPE_FORENSIC (%u)\n" |
| "#define T_ESCAPE_URLENCODED (%u)\n" |
| "#define T_HTTP_CTRLS (%u)\n" |
| "\n" |
| "static const unsigned char test_char_table[256] = {", |
| T_ESCAPE_SHELL_CMD, |
| T_ESCAPE_PATH_SEGMENT, |
| T_OS_ESCAPE_PATH, |
| T_HTTP_TOKEN_STOP, |
| T_ESCAPE_LOGITEM, |
| T_ESCAPE_FORENSIC, |
| T_ESCAPE_URLENCODED, |
| T_HTTP_CTRLS); |
| |
| for (c = 0; c < 256; ++c) { |
| flags = 0; |
| if (c % 8 == 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 (!apr_isalnum(c) && !strchr("$-_.+!*'(),:@&=~", c)) { |
| flags |= T_ESCAPE_PATH_SEGMENT; |
| } |
| |
| if (!apr_isalnum(c) && !strchr("$-_.+!*'(),:@&=/~", c)) { |
| flags |= T_OS_ESCAPE_PATH; |
| } |
| |
| if (!apr_isalnum(c) && !strchr(".-*_ ", c)) { |
| flags |= T_ESCAPE_URLENCODED; |
| } |
| |
| /* Stop for any non-'token' character, including ctrls, obs-text, |
| * and "tspecials" (RFC2068) a.k.a. "separators" (RFC2616) |
| * XXX: We need to verify that ASCII C0 ctrls/DEL in our EBCDIC table |
| * are captured by apr_iscntrl() |
| */ |
| if (!c || apr_iscntrl(c) || strchr(" \t()<>@,;:\\\"/[]?={}", c) |
| || !test_isascii_equiv(c)) { |
| flags |= T_HTTP_TOKEN_STOP; |
| } |
| |
| /* Catch CTRLs other than VCHAR, HT and SP, and obs-text (RFC7230 3.2) |
| * This includes only the C0 plane, not C1 (which is obs-text itself.) |
| * XXX: We need to verify that ASCII C0 ctrls/DEL in our EBCDIC table |
| * are captured by apr_iscntrl() |
| */ |
| if (!c || (apr_iscntrl(c) && c != '\t' && test_isascii_equiv(c))) { |
| flags |= T_HTTP_CTRLS; |
| } |
| |
| /* 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 && (!apr_isprint(c) || c == '"' || c == '\\' || apr_iscntrl(c))) { |
| flags |= T_ESCAPE_LOGITEM; |
| } |
| |
| /* For forensic logging, escape all control characters, top bit set, |
| * :, | (used as delimiters) and % (used for escaping). |
| */ |
| if (!apr_isprint(c) || c == ':' || c == '|' || c == '%' |
| || apr_iscntrl(c) || !c) { |
| flags |= T_ESCAPE_FORENSIC; |
| } |
| |
| printf("0x%02x%c", flags, (c < 255) ? ',' : ' '); |
| } |
| |
| printf("\n};\n"); |
| |
| return 0; |
| } |
