libsyncml 0.5.4

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sml_base64.c
1 /*
2 * libsyncml - A syncml protocol implementation
3 * Copyright (C) 2005 Armin Bauer <armin.bauer@opensync.org>
4 * Copyright (C) 2008 Michael Bell <michael.bell@opensync.org>
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 *
20 */
21
22 #include "syncml.h"
23 #include "sml_error.h"
24 #include "sml_error_internals.h"
25
26 #include "syncml_internals.h"
27
28 static SmlBool _smlBase64DecodeBinary(const char *input, unsigned int size, char **output, unsigned int *outsize, SmlError **error);
29 static SmlBool _smlBase64EncodeBinary(const char *input, unsigned int size, char **output, SmlError **error);
30
31 /* FIXME: DEPRECATED*/
32 SmlBool smlBase64Decode(const char *input, char **output, unsigned int *outsize, SmlError **error)
33 {
34 smlTrace(TRACE_ENTRY, "%s(%p, %p, %p, %p)", __func__, input, output, outsize, error);
35 CHECK_ERROR_REF
36 smlAssert(output);
37 smlAssert(outsize);
38
39 if (!input) {
40 *output = NULL;
41 *outsize = 0;
42 goto out;
43 }
44
45 if (!_smlBase64DecodeBinary(input, strlen(input), output, outsize, error))
46 goto error;
47
48 out:
49 smlTrace(TRACE_EXIT, "%s", __func__);
50 return TRUE;
51 error:
52 smlTrace(TRACE_EXIT_ERROR, "%s: %s", __func__, smlErrorPrint(error));
53 return FALSE;
54 }
55
56 /* FIXME: DEPRECATED*/
57 SmlBool smlBase64DecodeBinary(const char *input, unsigned int size, char **output, unsigned int *outsize, SmlError **error)
58 {
59 return _smlBase64DecodeBinary(input, size, output, outsize, error);
60 }
61
62 /* The only reason for this internal function is
63 * to avoid compiler warnings during the normal build process
64 * even if the whole base64 API is deprecated.
65 */
66 static SmlBool _smlBase64DecodeBinary(const char *input, unsigned int size, char **output, unsigned int *outsize, SmlError **error)
67 {
68 smlTrace(TRACE_ENTRY, "%s(%p, %i, %p, %p, %p)", __func__, input, size, output, outsize, error);
69 CHECK_ERROR_REF
70
71 if (!input || !size) {
72 *output = NULL;
73 *outsize = 0;
74 goto out;
75 }
76
77 size_t length = 0;
78 *output = (char *) g_base64_decode(input, &length);
79 if (length < 1) {
80 smlErrorSet(error, SML_ERROR_GENERIC, "Invalid base64 input");
81 goto error;
82 }
83 *outsize = length;
84
85 /* This is some kind of special for libsyncml.
86 * We have to add a padding NULL byte.
87 */
88 char *result = smlTryMalloc0(*outsize + 1, error);
89 if (result == NULL)
90 goto error;
91 memcpy(result, *output, *outsize);
92 g_free(*output);
93 *output = result;
94 *outsize = *outsize + 1;
95 out:
96 smlTrace(TRACE_EXIT, "%s", __func__);
97 return TRUE;
98 error:
99 *output = NULL;
100 *outsize = 0;
101 smlTrace(TRACE_EXIT_ERROR, "%s: %s", __func__, smlErrorPrint(error));
102 return FALSE;
103 }
104
105 /* FIXME: DEPRECATED*/
106 SmlBool smlBase64Encode(const char *input, char **output, SmlError **error)
107 {
108 smlTrace(TRACE_ENTRY, "%s(%p, %p, %p)", __func__, input, output, error);
109 CHECK_ERROR_REF
110 smlAssert(output);
111
112 if (!input) {
113 *output = NULL;
114 smlTrace(TRACE_EXIT, "%s", __func__);
115 return TRUE;
116 }
117
118 if (_smlBase64EncodeBinary(input, strlen(input), output, error)) {
119 smlTrace(TRACE_EXIT, "%s", __func__);
120 return TRUE;
121 }
122
123 smlTrace(TRACE_EXIT_ERROR, "%s: %s", __func__, smlErrorPrint(error));
124 return FALSE;
125 }
126
127 /* FIXME: DEPRECATED*/
128 SmlBool smlBase64EncodeBinary(const char *input, unsigned int size, char **output, SmlError **error)
129 {
130 return _smlBase64EncodeBinary(input, size, output, error);
131 }
132
133 /* The only reason for this internal function is
134 * to avoid compiler warnings during the normal build process
135 * even if the whole base64 API is deprecated.
136 */
137 static SmlBool _smlBase64EncodeBinary(const char *input, unsigned int size, char **output, SmlError **error)
138 {
139 smlTrace(TRACE_ENTRY, "%s(%p, %i, %p, %p)", __func__, input, size, output, error);
140 CHECK_ERROR_REF
141 smlAssert(output);
142
143
144 if (!input) {
145 *output = NULL;
146 goto out;
147 }
148
149 *output = g_base64_encode((const unsigned char *) input, size);
150 if (!*output) {
151 smlErrorSet(error, SML_ERROR_GENERIC, "Base64 encoding failed.");
152 goto error;
153 }
154 out:
155 smlTrace(TRACE_EXIT, "%s", __func__);
156 return TRUE;
157
158 error:
159 smlTrace(TRACE_EXIT_ERROR, "%s: %s", __func__, smlErrorPrint(error));
160 return FALSE;
161 }