[efi] Include installed protocol list in unknown handle names
[ipxe.git] / src / net / oncrpc / nfs_uri.c
1 /*
2 * Copyright (C) 2014 Marin Hannache <ipxe@mareo.fr>.
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License as
6 * published by the Free Software Foundation; either version 2 of the
7 * License, or any later version.
8 *
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
17 * 02110-1301, USA.
18 */
19
20 #include <stdlib.h>
21 #include <string.h>
22 #include <errno.h>
23 #include <libgen.h>
24 #include <ipxe/nfs_uri.h>
25
26 /** @file
27 *
28 * Network File System protocol URI handling functions
29 *
30 */
31
32 int nfs_uri_init ( struct nfs_uri *nfs_uri, const struct uri *uri ) {
33 if ( ! ( nfs_uri->mountpoint = strdup ( uri->path ) ) )
34 return -ENOMEM;
35
36 nfs_uri->filename = basename ( nfs_uri->mountpoint );
37 if ( strchr ( uri->path, '/' ) != NULL )
38 nfs_uri->mountpoint = dirname ( nfs_uri->mountpoint );
39
40 if ( nfs_uri->filename[0] == '\0' ) {
41 free ( nfs_uri->mountpoint );
42 return -EINVAL;
43 }
44
45 if ( ! ( nfs_uri->path = strdup ( nfs_uri->filename ) ) ) {
46 free ( nfs_uri->mountpoint );
47 return -ENOMEM;
48 }
49 nfs_uri->lookup_pos = nfs_uri->path;
50
51 return 0;
52 }
53
54 char *nfs_uri_mountpoint ( const struct nfs_uri *uri ) {
55 if ( uri->mountpoint + 1 == uri->filename ||
56 uri->mountpoint == uri->filename )
57 return "/";
58
59 return uri->mountpoint;
60 }
61
62 int nfs_uri_next_mountpoint ( struct nfs_uri *uri ) {
63 char *sep;
64
65 if ( uri->mountpoint + 1 == uri->filename ||
66 uri->mountpoint == uri->filename )
67 return -ENOENT;
68
69 sep = strrchr ( uri->mountpoint, '/' );
70 uri->filename[-1] = '/';
71 uri->filename = sep + 1;
72 *sep = '\0';
73
74 free ( uri->path );
75 if ( ! ( uri->path = strdup ( uri->filename ) ) ) {
76 uri->path = NULL;
77 return -ENOMEM;
78 }
79 uri->lookup_pos = uri->path;
80
81 return 0;
82 }
83
84 int nfs_uri_symlink ( struct nfs_uri *uri, const char *symlink ) {
85 size_t len;
86 char *new_path;
87
88 if ( ! uri->path )
89 return -EINVAL;
90
91 if ( *symlink == '/' )
92 {
93 if ( strncmp ( symlink, uri->mountpoint,
94 strlen ( uri->mountpoint ) ) != 0 )
95 return -EINVAL;
96
97 len = strlen ( uri->lookup_pos ) + strlen ( symlink ) - \
98 strlen ( uri->mountpoint );
99 if ( ! ( new_path = malloc ( len * sizeof ( char ) ) ) )
100 return -ENOMEM;
101
102 strcpy ( new_path, symlink + strlen ( uri->mountpoint ) );
103 strcpy ( new_path + strlen ( new_path ), uri->lookup_pos );
104
105 } else {
106 len = strlen ( uri->lookup_pos ) + strlen ( symlink );
107 if ( ! ( new_path = malloc ( len * sizeof ( char ) ) ) )
108 return -ENOMEM;
109
110
111 strcpy ( new_path, symlink );
112 strcpy ( new_path + strlen ( new_path ), uri->lookup_pos );
113 }
114
115 free ( uri->path );
116 uri->lookup_pos = uri->path = new_path;
117
118 return 0;
119 }
120
121 char *nfs_uri_next_path_component ( struct nfs_uri *uri ) {
122 char *sep;
123 char *start;
124
125 if ( ! uri->path )
126 return NULL;
127
128 for ( sep = uri->lookup_pos ; *sep != '\0' && *sep != '/'; sep++ )
129 ;
130
131 start = uri->lookup_pos;
132 uri->lookup_pos = sep;
133 if ( *sep != '\0' ) {
134 uri->lookup_pos++;
135 *sep = '\0';
136 if ( *start == '\0' )
137 return nfs_uri_next_path_component ( uri );
138 }
139
140 return start;
141 }
142
143 void nfs_uri_free ( struct nfs_uri *uri ) {
144 free ( uri->mountpoint );
145 free ( uri->path );
146 uri->mountpoint = NULL;
147 uri->path = NULL;
148 }