2 * Copyright (C) 2016, 2017 "IoT.bzh"
3 * Author José Bollo <jose.bollo@iot.bzh>
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
19 #define NO_BINDING_VERBOSE_MACRO
28 #include "afb-api-so.h"
29 #include "afb-api-so-v1.h"
30 #include "afb-api-so-v2.h"
33 static int load_binding(const char *path, int force, struct afb_apiset *apiset)
38 // This is a loadable library let's check if it's a binding
40 handle = dlopen(path, RTLD_NOW | RTLD_LOCAL);
43 ERROR("binding [%s] not loadable: %s", path, dlerror());
45 INFO("binding [%s] not loadable: %s", path, dlerror());
49 /* retrieves the register function */
50 rc = afb_api_so_v2_add(path, handle, apiset);
52 /* error when loading a valid v2 binding */
55 rc = afb_api_so_v1_add(path, handle, apiset);
57 /* error when loading a valid v1 binding */
61 /* not a v1 binding */
63 ERROR("binding [%s] is not an AFB binding", path);
65 INFO("binding [%s] is not an AFB binding", path);
77 int afb_api_so_add_binding(const char *path, struct afb_apiset *apiset)
79 return load_binding(path, 1, apiset);
82 static int adddirs(char path[PATH_MAX], size_t end, struct afb_apiset *apiset)
88 /* open the DIR now */
91 ERROR("can't scan binding directory %s, %m", path);
94 INFO("Scanning dir=[%s] for bindings", path);
104 ERROR("read error while scanning directory %.*s: %m", (int)(end - 1), path);
108 len = strlen(dent->d_name);
109 if (len + end >= PATH_MAX) {
110 ERROR("path too long while scanning bindings for %s", dent->d_name);
113 if (dent->d_type == DT_DIR) {
114 /* case of directories */
115 if (dent->d_name[0] == '.') {
118 if (dent->d_name[1] == '.' && len == 2)
121 memcpy(&path[end], dent->d_name, len+1);
122 adddirs(path, end+len, apiset);
123 } else if (dent->d_type == DT_REG) {
125 if (memcmp(&dent->d_name[len - 3], ".so", 4))
127 memcpy(&path[end], dent->d_name, len+1);
128 if (load_binding(path, 0, apiset) < 0)
136 int afb_api_so_add_directory(const char *path, struct afb_apiset *apiset)
139 char buffer[PATH_MAX];
141 length = strlen(path);
142 if (length >= sizeof(buffer)) {
143 ERROR("path too long %lu [%.99s...]", (unsigned long)length, path);
147 memcpy(buffer, path, length + 1);
148 return adddirs(buffer, length, apiset);
151 int afb_api_so_add_path(const char *path, struct afb_apiset *apiset)
156 rc = stat(path, &st);
158 ERROR("Invalid binding path [%s]: %m", path);
159 else if (S_ISDIR(st.st_mode))
160 rc = afb_api_so_add_directory(path, apiset);
161 else if (strstr(path, ".so"))
162 rc = load_binding(path, 0, apiset);
164 INFO("not a binding [%s], skipped", path);
168 int afb_api_so_add_pathset(const char *pathset, struct afb_apiset *apiset)
170 static char sep[] = ":";
173 ps = strdupa(pathset);
175 p = strsep(&ps, sep);
178 if (afb_api_so_add_path(p, apiset) < 0)