1 /*
2 * Copyright (c) 2004, 2018, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 #include <stdio.h>
27 #include <stdlib.h>
28 #include <string.h>
29
30 #include "FileSystemSupport_md.h"
31
32 /*
33 * Solaris/Linux implementation of the file system support functions.
34 */
35
36 #define slash '/'
37
pathSeparator()38 char pathSeparator() {
39 return ':';
40 }
41
42 /* Filenames are case senstitive */
filenameStrcmp(const char * s1,const char * s2)43 int filenameStrcmp(const char* s1, const char* s2) {
44 return strcmp(s1, s2);
45 }
46
basePath(const char * path)47 char* basePath(const char* path) {
48 char* last = strrchr(path, slash);
49 if (last == NULL) {
50 return (char*)path;
51 } else {
52 int len = last - path;
53 char* str = (char*)malloc(len+1);
54 if (str == NULL) {
55 fprintf(stderr, "OOM error in native tmp buffer allocation");
56 return NULL;
57 }
58 if (len > 0) {
59 memcpy(str, path, len);
60 }
61 str[len] = '\0';
62 return str;
63 }
64 }
65
isAbsolute(const char * path)66 int isAbsolute(const char* path) {
67 return (path[0] == slash) ? 1 : 0;
68 }
69
70 /* Ported from src/solaris/classes/java/io/UnixFileSystem.java */
71
72 /* A normal Unix pathname contains no duplicate slashes and does not end
73 with a slash. It may be the empty string. */
74
75 /* Normalize the given pathname, whose length is len, starting at the given
76 offset; everything before this offset is already normal. */
normalizePath(const char * pathname,int len,int off)77 static char* normalizePath(const char* pathname, int len, int off) {
78 char* sb;
79 int sbLen, i, n;
80 char prevChar;
81
82 if (len == 0) return (char*)pathname;
83 n = len;
84 while ((n > 0) && (pathname[n - 1] == slash)) n--;
85 if (n == 0) return strdup("/");
86
87 sb = (char*)malloc(strlen(pathname)+1);
88 if (sb == NULL) {
89 fprintf(stderr, "OOM error in native tmp buffer allocation");
90 return NULL;
91 }
92 sbLen = 0;
93
94 if (off > 0) {
95 memcpy(sb, pathname, off);
96 sbLen = off;
97 }
98
99 prevChar = 0;
100 for (i = off; i < n; i++) {
101 char c = pathname[i];
102 if ((prevChar == slash) && (c == slash)) continue;
103 sb[sbLen++] = c;
104 prevChar = c;
105 }
106 return sb;
107 }
108
109 /* Check that the given pathname is normal. If not, invoke the real
110 normalizer on the part of the pathname that requires normalization.
111 This way we iterate through the whole pathname string only once. */
normalize(const char * pathname)112 char* normalize(const char* pathname) {
113 int i;
114 int n = strlen(pathname);
115 char prevChar = 0;
116 for (i = 0; i < n; i++) {
117 char c = pathname[i];
118 if ((prevChar == slash) && (c == slash))
119 return normalizePath(pathname, n, i - 1);
120 prevChar = c;
121 }
122 if (prevChar == slash) return normalizePath(pathname, n, n - 1);
123 return (char*)pathname;
124 }
125
resolve(const char * parent,const char * child)126 char* resolve(const char* parent, const char* child) {
127 int len;
128 char* theChars;
129 int pn = strlen(parent);
130 int cn = strlen(child);
131 int childStart = 0;
132 int parentEnd = pn;
133
134 if (pn > 0 && parent[pn-1] == slash) {
135 parentEnd--;
136 }
137 len = parentEnd + cn - childStart;
138 if (child[0] == slash) {
139 theChars = (char*)malloc(len+1);
140 if (theChars == NULL) {
141 fprintf(stderr, "OOM error in native tmp buffer allocation");
142 return NULL;
143 }
144 if (parentEnd > 0)
145 memcpy(theChars, parent, parentEnd);
146 if (cn > 0)
147 memcpy(theChars+parentEnd, child, cn);
148 theChars[len] = '\0';
149 } else {
150 theChars = (char*)malloc(len+2);
151 if (theChars == NULL) {
152 fprintf(stderr, "OOM error in native tmp buffer allocation");
153 return NULL;
154 }
155 if (parentEnd > 0)
156 memcpy(theChars, parent, parentEnd);
157 theChars[parentEnd] = slash;
158 if (cn > 0)
159 memcpy(theChars+parentEnd+1, child, cn);
160 theChars[len+1] = '\0';
161 }
162 return theChars;
163 }
164
fromURIPath(const char * path)165 char* fromURIPath(const char* path) {
166 int len = strlen(path);
167 if (len > 1 && path[len-1] == slash) {
168 // "/foo/" --> "/foo", but "/" --> "/"
169 char* str = (char*)malloc(len);
170 if (str == NULL)
171 {
172 fprintf(stderr, "OOM error in native tmp buffer allocation");
173 return NULL;
174 }
175 memcpy(str, path, len-1);
176 str[len-1] = '\0';
177 return str;
178 } else {
179 return (char*)path;
180 }
181 }
182