diff options
Diffstat (limited to 'src/identity-attribute/plugin_identity_attribute_gnuid.c')
-rw-r--r-- | src/identity-attribute/plugin_identity_attribute_gnuid.c | 184 |
1 files changed, 184 insertions, 0 deletions
diff --git a/src/identity-attribute/plugin_identity_attribute_gnuid.c b/src/identity-attribute/plugin_identity_attribute_gnuid.c new file mode 100644 index 000000000..ba460d0a5 --- /dev/null +++ b/src/identity-attribute/plugin_identity_attribute_gnuid.c | |||
@@ -0,0 +1,184 @@ | |||
1 | /* | ||
2 | This file is part of GNUnet | ||
3 | Copyright (C) 2013, 2014, 2016 GNUnet e.V. | ||
4 | |||
5 | GNUnet is free software; you can redistribute it and/or modify | ||
6 | it under the terms of the GNU General Public License as published | ||
7 | by the Free Software Foundation; either version 3, or (at your | ||
8 | option) any later version. | ||
9 | |||
10 | GNUnet is distributed in the hope that it will be useful, but | ||
11 | WITHOUT ANY WARRANTY; without even the implied warranty of | ||
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
13 | General Public License for more details. | ||
14 | |||
15 | You should have received a copy of the GNU General Public License | ||
16 | along with GNUnet; see the file COPYING. If not, write to the | ||
17 | Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, | ||
18 | Boston, MA 02110-1301, USA. | ||
19 | */ | ||
20 | |||
21 | /** | ||
22 | * @file identity-provider/plugin_identity_attribute_gnuid.c | ||
23 | * @brief identity attribute plugin to provide the API for fundamental | ||
24 | * attribute types. | ||
25 | * | ||
26 | * @author Martin Schanzenbach | ||
27 | */ | ||
28 | #include "platform.h" | ||
29 | #include "gnunet_util_lib.h" | ||
30 | #include "gnunet_identity_attribute_plugin.h" | ||
31 | #include <inttypes.h> | ||
32 | |||
33 | |||
34 | /** | ||
35 | * Convert the 'value' of an attribute to a string. | ||
36 | * | ||
37 | * @param cls closure, unused | ||
38 | * @param type type of the attribute | ||
39 | * @param data value in binary encoding | ||
40 | * @param data_size number of bytes in @a data | ||
41 | * @return NULL on error, otherwise human-readable representation of the value | ||
42 | */ | ||
43 | static char * | ||
44 | gnuid_value_to_string (void *cls, | ||
45 | uint32_t type, | ||
46 | const void *data, | ||
47 | size_t data_size) | ||
48 | { | ||
49 | |||
50 | switch (type) | ||
51 | { | ||
52 | case GNUNET_IDENTITY_ATTRIBUTE_TYPE_STRING: | ||
53 | return GNUNET_strndup (data, data_size); | ||
54 | default: | ||
55 | return NULL; | ||
56 | } | ||
57 | } | ||
58 | |||
59 | |||
60 | /** | ||
61 | * Convert human-readable version of a 'value' of an attribute to the binary | ||
62 | * representation. | ||
63 | * | ||
64 | * @param cls closure, unused | ||
65 | * @param type type of the attribute | ||
66 | * @param s human-readable string | ||
67 | * @param data set to value in binary encoding (will be allocated) | ||
68 | * @param data_size set to number of bytes in @a data | ||
69 | * @return #GNUNET_OK on success | ||
70 | */ | ||
71 | static int | ||
72 | gnuid_string_to_value (void *cls, | ||
73 | uint32_t type, | ||
74 | const char *s, | ||
75 | void **data, | ||
76 | size_t *data_size) | ||
77 | { | ||
78 | if (NULL == s) | ||
79 | return GNUNET_SYSERR; | ||
80 | switch (type) | ||
81 | { | ||
82 | |||
83 | case GNUNET_IDENTITY_ATTRIBUTE_TYPE_STRING: | ||
84 | *data = GNUNET_strdup (s); | ||
85 | *data_size = strlen (s); | ||
86 | return GNUNET_OK; | ||
87 | default: | ||
88 | return GNUNET_SYSERR; | ||
89 | } | ||
90 | } | ||
91 | |||
92 | |||
93 | /** | ||
94 | * Mapping of attribute type numbers to human-readable | ||
95 | * attribute type names. | ||
96 | */ | ||
97 | static struct { | ||
98 | const char *name; | ||
99 | uint32_t number; | ||
100 | } gnuid_name_map[] = { | ||
101 | { "STRING", GNUNET_IDENTITY_ATTRIBUTE_TYPE_STRING }, | ||
102 | { NULL, UINT32_MAX } | ||
103 | }; | ||
104 | |||
105 | |||
106 | /** | ||
107 | * Convert a type name to the corresponding number. | ||
108 | * | ||
109 | * @param cls closure, unused | ||
110 | * @param gnuid_typename name to convert | ||
111 | * @return corresponding number, UINT32_MAX on error | ||
112 | */ | ||
113 | static uint32_t | ||
114 | gnuid_typename_to_number (void *cls, | ||
115 | const char *gnuid_typename) | ||
116 | { | ||
117 | unsigned int i; | ||
118 | |||
119 | i=0; | ||
120 | while ( (NULL != gnuid_name_map[i].name) && | ||
121 | (0 != strcasecmp (gnuid_typename, | ||
122 | gnuid_name_map[i].name)) ) | ||
123 | i++; | ||
124 | return gnuid_name_map[i].number; | ||
125 | } | ||
126 | |||
127 | |||
128 | /** | ||
129 | * Convert a type number (i.e. 1) to the corresponding type string | ||
130 | * | ||
131 | * @param cls closure, unused | ||
132 | * @param type number of a type to convert | ||
133 | * @return corresponding typestring, NULL on error | ||
134 | */ | ||
135 | static const char * | ||
136 | gnuid_number_to_typename (void *cls, | ||
137 | uint32_t type) | ||
138 | { | ||
139 | unsigned int i; | ||
140 | |||
141 | i=0; | ||
142 | while ( (NULL != gnuid_name_map[i].name) && | ||
143 | (type != gnuid_name_map[i].number) ) | ||
144 | i++; | ||
145 | return gnuid_name_map[i].name; | ||
146 | } | ||
147 | |||
148 | |||
149 | /** | ||
150 | * Entry point for the plugin. | ||
151 | * | ||
152 | * @param cls NULL | ||
153 | * @return the exported block API | ||
154 | */ | ||
155 | void * | ||
156 | libgnunet_plugin_attribute_type_gnuid_init (void *cls) | ||
157 | { | ||
158 | struct GNUNET_IDENTITY_ATTRIBUTE_PluginFunctions *api; | ||
159 | |||
160 | api = GNUNET_new (struct GNUNET_IDENTITY_ATTRIBUTE_PluginFunctions); | ||
161 | api->value_to_string = &gnuid_value_to_string; | ||
162 | api->string_to_value = &gnuid_string_to_value; | ||
163 | api->typename_to_number = &gnuid_typename_to_number; | ||
164 | api->number_to_typename = &gnuid_number_to_typename; | ||
165 | return api; | ||
166 | } | ||
167 | |||
168 | |||
169 | /** | ||
170 | * Exit point from the plugin. | ||
171 | * | ||
172 | * @param cls the return value from #libgnunet_plugin_block_test_init() | ||
173 | * @return NULL | ||
174 | */ | ||
175 | void * | ||
176 | libgnunet_plugin_attribute_type_gnuid_done (void *cls) | ||
177 | { | ||
178 | struct GNUNET_IDENTITY_ATTRIBUTE_PluginFunctions *api = cls; | ||
179 | |||
180 | GNUNET_free (api); | ||
181 | return NULL; | ||
182 | } | ||
183 | |||
184 | /* end of plugin_identity_attribute_type_gnuid.c */ | ||