1 /* Licensed to the Apache Software Foundation (ASF) under one or more
2 * contributor license agreements. See the NOTICE file distributed with
3 * this work for additional information regarding copyright ownership.
4 * The ASF licenses this file to You under the Apache License, Version 2.0
5 * (the "License"); you may not use this file except in compliance with
6 * the License. You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 /* The code in this file is copied from APR (initially from APR 1.7.0)
18 * to provide compatibility for building against APR < 1.5.0.
19 */
20
21 #include "private/svn_dep_compat.h"
22
23 #if !APR_VERSION_AT_LEAST(1,5,0)
24
25 #include <apr_lib.h>
26 #include <apr_strings.h>
27
28 /* from apr_escape_test_char.h */
29 #define T_ESCAPE_SHELL_CMD (1)
30 #define T_ESCAPE_PATH_SEGMENT (2)
31 #define T_OS_ESCAPE_PATH (4)
32 #define T_ESCAPE_ECHO (8)
33 #define T_ESCAPE_URLENCODED (16)
34 #define T_ESCAPE_XML (32)
35 #define T_ESCAPE_LDAP_DN (64)
36 #define T_ESCAPE_LDAP_FILTER (128)
37
38 static const unsigned char test_char_table[256] = {
39 224,222,222,222,222,222,222,222,222,222,223,222,222,222,222,222,222,222,222,222,
40 222,222,222,222,222,222,222,222,222,222,222,222,6,16,127,22,17,22,49,17,
41 145,145,129,80,80,0,0,18,0,0,0,0,0,0,0,0,0,0,16,87,
42 119,16,119,23,16,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
43 0,0,0,0,0,0,0,0,0,0,0,23,223,23,23,0,23,0,0,0,
44 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
45 0,0,0,23,23,23,17,222,222,222,222,222,222,222,222,222,222,222,222,222,
46 222,222,222,222,222,222,222,222,222,222,222,222,222,222,222,222,222,222,222,222,
47 222,222,222,222,222,222,222,222,222,222,222,222,222,222,222,222,222,222,222,222,
48 222,222,222,222,222,222,222,222,222,222,222,222,222,222,222,222,222,222,222,222,
49 222,222,222,222,222,222,222,222,222,222,222,222,222,222,222,222,222,222,222,222,
50 222,222,222,222,222,222,222,222,222,222,222,222,222,222,222,222,222,222,222,222,
51 222,222,222,222,222,222,222,222,222,222,222,222,222,222,222,222
52 };
53
54 /* from apr_encode_private.h */
55 #if APR_CHARSET_EBCDIC
56 #error This Subversion compatibility code for APR<1.5 does not support EBCDIC.
57 #else /* APR_CHARSET_EBCDIC */
58 #define ENCODE_TO_ASCII(ch) (ch)
59 #define ENCODE_TO_NATIVE(ch) (ch)
60 #endif /* !APR_CHARSET_EBCDIC */
61
62 /* we assume the folks using this ensure 0 <= c < 256... which means
63 * you need a cast to (unsigned char) first, you can't just plug a
64 * char in here and get it to work, because if char is signed then it
65 * will first be sign extended.
66 */
67 #define TEST_CHAR(c, f) (test_char_table[(unsigned)(c)] & (f))
68
apr_escape_shell(char * escaped,const char * str,apr_ssize_t slen,apr_size_t * len)69 APR_DECLARE(apr_status_t) apr_escape_shell(char *escaped, const char *str,
70 apr_ssize_t slen, apr_size_t *len)
71 {
72 unsigned char *d;
73 const unsigned char *s;
74 apr_size_t size = 1;
75 int found = 0;
76
77 d = (unsigned char *) escaped;
78 s = (const unsigned char *) str;
79
80 if (s) {
81 if (d) {
82 for (; *s && slen; ++s, slen--) {
83 #if defined(OS2) || defined(WIN32)
84 /*
85 * Newlines to Win32/OS2 CreateProcess() are ill advised.
86 * Convert them to spaces since they are effectively white
87 * space to most applications
88 */
89 if (*s == '\r' || *s == '\n') {
90 if (d) {
91 *d++ = ' ';
92 found = 1;
93 }
94 continue;
95 }
96 #endif
97 if (TEST_CHAR(*s, T_ESCAPE_SHELL_CMD)) {
98 *d++ = '\\';
99 size++;
100 found = 1;
101 }
102 *d++ = *s;
103 size++;
104 }
105 *d = '\0';
106 }
107 else {
108 for (; *s && slen; ++s, slen--) {
109 if (TEST_CHAR(*s, T_ESCAPE_SHELL_CMD)) {
110 size++;
111 found = 1;
112 }
113 size++;
114 }
115 }
116 }
117
118 if (len) {
119 *len = size;
120 }
121 if (!found) {
122 return APR_NOTFOUND;
123 }
124
125 return APR_SUCCESS;
126 }
127
128 #else /* APR_VERSION_AT_LEAST(1,5,0) */
129
130 /* Silence OSX ranlib warnings about object files with no symbols. */
131 #include <apr.h>
132 extern const apr_uint32_t svn__fake__apr_escape;
133 const apr_uint32_t svn__fake__apr_escape = 0xdeadbeef;
134
135 #endif /* !APR_VERSION_AT_LEAST(1,5,0) */
136