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author | Christian Grothoff <christian@grothoff.org> | 2012-03-11 00:00:57 +0000 |
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committer | Christian Grothoff <christian@grothoff.org> | 2012-03-11 00:00:57 +0000 |
commit | 5f26e758b71fe887dbacb50ae7e75d86dd4243a2 (patch) | |
tree | 7caa8003528d8fde8d2bbac11006d6fdd05c4cd4 /src/peerinfo-tool/gnunet-peerinfo_plugins.c | |
parent | 1cbe4adfa9e980a2ab70b36a726947ffffead06b (diff) | |
download | gnunet-5f26e758b71fe887dbacb50ae7e75d86dd4243a2.tar.gz gnunet-5f26e758b71fe887dbacb50ae7e75d86dd4243a2.zip |
-starting cleanup of peerinfo, crashed before by loading plugins which failed if ports were in use, etc. --- not done
Diffstat (limited to 'src/peerinfo-tool/gnunet-peerinfo_plugins.c')
-rw-r--r-- | src/peerinfo-tool/gnunet-peerinfo_plugins.c | 178 |
1 files changed, 178 insertions, 0 deletions
diff --git a/src/peerinfo-tool/gnunet-peerinfo_plugins.c b/src/peerinfo-tool/gnunet-peerinfo_plugins.c new file mode 100644 index 000000000..ba7c1d392 --- /dev/null +++ b/src/peerinfo-tool/gnunet-peerinfo_plugins.c | |||
@@ -0,0 +1,178 @@ | |||
1 | /* | ||
2 | This file is part of GNUnet. | ||
3 | (C) 2010,2011 Christian Grothoff (and other contributing authors) | ||
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., 59 Temple Place - Suite 330, | ||
18 | Boston, MA 02111-1307, USA. | ||
19 | */ | ||
20 | |||
21 | /** | ||
22 | * @file peerinfo-tool/gnunet-peerinfo_plugins.c | ||
23 | * @brief plugin management | ||
24 | * @author Christian Grothoff | ||
25 | */ | ||
26 | #include "platform.h" | ||
27 | #include "gnunet-peerinfo_plugins.h" | ||
28 | #include "gnunet_transport_plugin.h" | ||
29 | #include "gnunet_hello_lib.h" | ||
30 | |||
31 | /** | ||
32 | * Entry in doubly-linked list of all of our plugins. | ||
33 | */ | ||
34 | struct TransportPlugin | ||
35 | { | ||
36 | /** | ||
37 | * This is a doubly-linked list. | ||
38 | */ | ||
39 | struct TransportPlugin *next; | ||
40 | |||
41 | /** | ||
42 | * This is a doubly-linked list. | ||
43 | */ | ||
44 | struct TransportPlugin *prev; | ||
45 | |||
46 | /** | ||
47 | * API of the transport as returned by the plugin's | ||
48 | * initialization function. | ||
49 | */ | ||
50 | struct GNUNET_TRANSPORT_PluginFunctions *api; | ||
51 | |||
52 | /** | ||
53 | * Short name for the plugin (i.e. "tcp"). | ||
54 | */ | ||
55 | char *short_name; | ||
56 | |||
57 | /** | ||
58 | * Name of the library (i.e. "gnunet_plugin_transport_tcp"). | ||
59 | */ | ||
60 | char *lib_name; | ||
61 | |||
62 | /** | ||
63 | * Environment this transport service is using | ||
64 | * for this plugin. | ||
65 | */ | ||
66 | struct GNUNET_TRANSPORT_PluginEnvironment env; | ||
67 | |||
68 | }; | ||
69 | |||
70 | /** | ||
71 | * Head of DLL of all loaded plugins. | ||
72 | */ | ||
73 | static struct TransportPlugin *plugins_head; | ||
74 | |||
75 | /** | ||
76 | * Head of DLL of all loaded plugins. | ||
77 | */ | ||
78 | static struct TransportPlugin *plugins_tail; | ||
79 | |||
80 | |||
81 | |||
82 | /** | ||
83 | * Load and initialize all plugins. The respective functions will be | ||
84 | * invoked by the plugins when the respective events happen. The | ||
85 | * closure will be set to a 'const char*' containing the name of the | ||
86 | * plugin that caused the call. | ||
87 | * | ||
88 | * @param cfg configuration to use | ||
89 | */ | ||
90 | void | ||
91 | GPI_plugins_load (const struct GNUNET_CONFIGURATION_Handle *cfg) | ||
92 | { | ||
93 | struct TransportPlugin *plug; | ||
94 | struct TransportPlugin *next; | ||
95 | char *libname; | ||
96 | char *plugs; | ||
97 | char *pos; | ||
98 | |||
99 | if (NULL != plugins_head) | ||
100 | return; /* already loaded */ | ||
101 | if (GNUNET_OK != | ||
102 | GNUNET_CONFIGURATION_get_value_string (cfg, "TRANSPORT", "PLUGINS", | ||
103 | &plugs)) | ||
104 | return; | ||
105 | GNUNET_log (GNUNET_ERROR_TYPE_INFO, _("Starting transport plugins `%s'\n"), | ||
106 | plugs); | ||
107 | for (pos = strtok (plugs, " "); pos != NULL; pos = strtok (NULL, " ")) | ||
108 | { | ||
109 | GNUNET_log (GNUNET_ERROR_TYPE_INFO, _("Loading `%s' transport plugin\n"), | ||
110 | pos); | ||
111 | GNUNET_asprintf (&libname, "libgnunet_plugin_transport_%s", pos); | ||
112 | plug = GNUNET_malloc (sizeof (struct TransportPlugin)); | ||
113 | plug->short_name = GNUNET_strdup (pos); | ||
114 | plug->lib_name = libname; | ||
115 | plug->env.cfg = cfg; | ||
116 | plug->env.cls = plug->short_name; | ||
117 | GNUNET_CONTAINER_DLL_insert (plugins_head, plugins_tail, plug); | ||
118 | } | ||
119 | GNUNET_free (plugs); | ||
120 | next = plugins_head; | ||
121 | while (next != NULL) | ||
122 | { | ||
123 | plug = next; | ||
124 | next = plug->next; | ||
125 | plug->api = GNUNET_PLUGIN_load (plug->lib_name, &plug->env); | ||
126 | if (plug->api == NULL) | ||
127 | { | ||
128 | GNUNET_log (GNUNET_ERROR_TYPE_ERROR, | ||
129 | _("Failed to load transport plugin for `%s'\n"), | ||
130 | plug->lib_name); | ||
131 | GNUNET_CONTAINER_DLL_remove (plugins_head, plugins_tail, plug); | ||
132 | GNUNET_free (plug->short_name); | ||
133 | GNUNET_free (plug->lib_name); | ||
134 | GNUNET_free (plug); | ||
135 | } | ||
136 | } | ||
137 | } | ||
138 | |||
139 | |||
140 | /** | ||
141 | * Unload all plugins | ||
142 | */ | ||
143 | void | ||
144 | GPI_plugins_unload () | ||
145 | { | ||
146 | struct TransportPlugin *plug; | ||
147 | |||
148 | while (NULL != (plug = plugins_head)) | ||
149 | { | ||
150 | GNUNET_break (NULL == GNUNET_PLUGIN_unload (plug->lib_name, plug->api)); | ||
151 | GNUNET_free (plug->lib_name); | ||
152 | GNUNET_free (plug->short_name); | ||
153 | GNUNET_CONTAINER_DLL_remove (plugins_head, plugins_tail, plug); | ||
154 | GNUNET_free (plug); | ||
155 | } | ||
156 | } | ||
157 | |||
158 | |||
159 | /** | ||
160 | * Obtain the plugin API based on a plugin name. | ||
161 | * | ||
162 | * @param name name of the plugin | ||
163 | * @return the plugin's API, NULL if the plugin is not loaded | ||
164 | */ | ||
165 | struct GNUNET_TRANSPORT_PluginFunctions * | ||
166 | GPI_plugins_find (const char *name) | ||
167 | { | ||
168 | struct TransportPlugin *head = plugins_head; | ||
169 | |||
170 | while ((head != NULL) && (0 != strcmp (name, head->short_name))) | ||
171 | head = head->next; | ||
172 | if (NULL == head) | ||
173 | return NULL; | ||
174 | return head->api; | ||
175 | } | ||
176 | |||
177 | |||
178 | /* end of file gnunet-peerinfo_plugins.c */ | ||