1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
|
/*
* Copyright (c) 2012 Los Alamos National Security, LLC.
* All rights reserved.
* Copyright (c) 2015 Research Organization for Information Science
* and Technology (RIST). All rights reserved.
* Copyright (c) 2018 Amazon.com, Inc. or its affiliates. All Rights reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#include "opal_config.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#include "opal/util/output.h"
#include "opal/util/path.h"
#include "opal/util/printf.h"
#include "opal/util/show_help.h"
#include "opal/util/uri.h"
const static char *uri_reserved_path_chars = "!$&'()*+,;=:@ ";
char *opal_uri_get_scheme(const char *uri)
{
char *turi = strdup(uri);
char *ptr;
if (NULL == (ptr = strchr(turi, ':'))) {
opal_show_help("help-opal-util.txt", "malformed-uri", true, uri);
free(turi);
return NULL;
}
*ptr = '\0';
return turi;
}
char *opal_filename_to_uri(const char *filename, const char *hostname)
{
char *uri, *fn;
size_t i, j, k, n;
/* filename must be an absolute path */
if (!opal_path_is_absolute(filename)) {
opal_show_help("help-opal-util.txt", "relative-path", true, filename);
return NULL;
}
/* if hostname is NULL, then this is a local file, so
* the scheme can either be missing or given as "localhost"
*/
if (NULL == hostname) {
opal_asprintf(&uri, "file://%s", filename);
return uri;
}
/* count the number of characters that require escaping
* in the filename
*/
n = 0;
for (j = 0; j < strlen(uri_reserved_path_chars) - 1; j++) {
if (NULL != strchr(filename, uri_reserved_path_chars[j])) {
n++;
}
}
/* escape them if necessary */
if (0 < n) {
fn = (char *) malloc(strlen(filename) + n + 1);
i = 0;
for (k = 0; k < strlen(filename) - 1; k++) {
for (j = 0; j < strlen(uri_reserved_path_chars) - 1; j++) {
if (filename[k] == uri_reserved_path_chars[j]) {
fn[i] = '\\';
i++;
break;
}
}
fn[i] = filename[k];
i++;
}
fn[i] = '\0';
} else {
fn = strdup(filename);
}
/* construct the uri - the filename was already tested to
* ensure it was absolute, so the required separator should
* already be present
*/
opal_asprintf(&uri, "file://%s%s", hostname, fn);
free(fn);
return uri;
}
char *opal_filename_from_uri(const char *uri, char **hostname)
{
char *turi;
char *ptr, *fn, *sp;
/* protect the incoming string */
turi = strdup(uri);
/* set defaults */
fn = NULL;
if (NULL != hostname) {
*hostname = NULL;
}
/* extract the scheme */
if (NULL == (ptr = strchr(turi, ':'))) {
opal_show_help("help-opal-util.txt", "malformed-uri", true, uri);
free(turi);
return NULL;
}
*ptr = '\0';
ptr++; /* step over the new NULL */
/* if there are three '/', then there is no
* hostname and the file is local
*/
if (0 == strncmp(ptr, "///", 3)) {
/* step to the filename - as it is required
* to be an absolute path, leave one slash
* in the name
*/
ptr += 2;
fn = strdup(ptr);
} else if (0 != strncmp(ptr, "//", 2)) {
/* error */
opal_show_help("help-opal-util.txt", "malformed-uri", true, uri);
} else {
ptr += 2; /* step to the hostname */
/* find the separator to the filename */
if (NULL == (sp = strchr(ptr, '/'))) {
opal_show_help("help-opal-util.txt", "malformed-uri", true, uri);
} else {
*sp = '\0';
if (NULL != hostname) {
*hostname = strdup(ptr);
}
/* the filename is required to be an
* absolute path, so restore the slash
*/
*sp = '/';
fn = strdup(sp);
}
}
free(turi);
return fn;
}
|
