summaryrefslogtreecommitdiffstats
path: root/conf/CMakeLists.txt
diff options
context:
space:
mode:
authorjobol <jose.bollo@iot.bzh>2018-04-03 13:58:13 +0200
committerJosé Bollo <jose.bollo@iot.bzh>2018-04-05 10:48:01 +0200
commita752e8b3033fdeb6a52349fcc7fbd618907ab474 (patch)
treeca4b976fece5417c9409494df1083bcebbe52ce8 /conf/CMakeLists.txt
parent3f53c6fff76d6200ebf2165f5d206684a142db35 (diff)
CMakeLists: Fix library directories
Change-Id: Id9c86eb2385224d657ac69e1b7b5acd07bf6d71d Signed-off-by: jobol <jose.bollo@iot.bzh>
Diffstat (limited to 'conf/CMakeLists.txt')
0 files changed, 0 insertions, 0 deletions
a id='n147' href='#n147'>147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 
/*
 * Copyright (C) 2016 "IoT.bzh"
 * Author Fulup Ar Foll <fulup@iot.bzh>
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, something express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * Reference:
 *   Json load using json_unpack https://jansson.readthedocs.io/en/2.9/apiref.html#parsing-and-validating-values
 */

#define _GNU_SOURCE
#include <string.h>
#include <dlfcn.h>

#include "ctl-config.h"

int PluginGetCB (AFB_ApiT apiHandle, CtlActionT *action , json_object *callbackJ) {
    const char *plugin=NULL, *function=NULL;
    json_object *argsJ;
    int idx;

    if (!ctlPlugins) {
        AFB_ApiError(apiHandle, "PluginGetCB plugin section missing cannot call '%s'", json_object_get_string(callbackJ));
        return 1;
    }

    int err = wrap_json_unpack(callbackJ, "{ss,ss,s?o!}",
        "plugin", &plugin,
        "function", &function,
        "args", &argsJ);
    if (err) {
        AFB_ApiError(apiHandle, "PluginGet missing plugin|function|[args] in %s", json_object_get_string(callbackJ));
        return 1;
    }

    for (idx=0; ctlPlugins[idx].uid != NULL; idx++) {
        if (!strcasecmp (ctlPlugins[idx].uid, plugin)) break;
    }

    if (!ctlPlugins[idx].uid) {
        AFB_ApiError(apiHandle, "PluginGetCB no plugin with uid=%s", plugin);
        return 1;
    }

    action->exec.cb.funcname = function;
    action->exec.cb.callback = dlsym(ctlPlugins[idx].dlHandle, function);
    action->exec.cb.plugin= &ctlPlugins[idx];

    if (!action->exec.cb.callback) {
       AFB_ApiError(apiHandle, "PluginGetCB no plugin=%s no function=%s", plugin, function);
       return 1;
    }
    return 0;
}

// Wrapper to Lua2c plugin command add context and delegate to LuaWrapper
static int DispatchOneL2c(void* luaState, char *funcname, Lua2cFunctionT callback) {
#ifndef CONTROL_SUPPORT_LUA
    fprintf(stderr, "CTL-ONE-L2C: LUA support not selected (cf:CONTROL_SUPPORT_LUA) in config.cmake");
    return 1;
#else
    int err=Lua2cWrapper(luaState, funcname, callback);
    return err;
#endif
}

static int PluginLoadCOne(AFB_ApiT apiHandle, const char *pluginpath, json_object *lua2csJ, const char *lua2c_prefix, void * handle, CtlPluginT *ctlPlugin)
{
    void *dlHandle = dlopen(pluginpath, RTLD_NOW);

    if (!dlHandle) {
        AFB_ApiError(apiHandle, "CTL-PLUGIN-LOADONE Fail to load pluginpath=%s err= %s", pluginpath, dlerror());
        return -1;
    }

    CtlPluginMagicT *ctlPluginMagic = (CtlPluginMagicT*) dlsym(dlHandle, "CtlPluginMagic");
    if (!ctlPluginMagic || ctlPluginMagic->magic != CTL_PLUGIN_MAGIC) {
        AFB_ApiError(apiHandle, "CTL-PLUGIN-LOADONE symbol'CtlPluginMagic' missing or !=  CTL_PLUGIN_MAGIC plugin=%s", pluginpath);
        return -1;
    } else {
        AFB_ApiNotice(apiHandle, "CTL-PLUGIN-LOADONE %s successfully registered", ctlPluginMagic->uid);
    }

    // store dlopen handle to enable onload action at exec time
    ctlPlugin->dlHandle = dlHandle;

#ifndef AFB_BINDING_PREV3
    // Jose hack to make verbosity visible from sharelib with API-V2
    struct afb_binding_data_v2 *afbHidenData = dlsym(dlHandle, "afbBindingV2data");
    if (afbHidenData) *afbHidenData = afbBindingV2data;
#endif

    // Push lua2cWrapper @ into plugin
    Lua2cWrapperT *lua2cInPlug = dlsym(dlHandle, "Lua2cWrap");
#ifndef CONTROL_SUPPORT_LUA
    if (lua2cInPlug) *lua2cInPlug = NULL;
#else
    // Lua2cWrapper is part of binder and not expose to dynamic link
    if (lua2csJ && lua2cInPlug) {
        *lua2cInPlug = (Lua2cWrapperT)DispatchOneL2c;

        int Lua2cAddOne(luaL_Reg *l2cFunc, const char* l2cName, int index) {
            if(ctlPlugin->ctlL2cFunc->l2cCount)
                {index += ctlPlugin->ctlL2cFunc->l2cCount+1;}
            char *funcName;
            size_t p_length = 6 + strlen(l2cName);
            funcName = malloc(p_length + 1);

            strncpy(funcName, "lua2c_", p_length);
            strncat(funcName, l2cName, p_length - strlen (funcName));

            Lua2cFunctionT l2cFunction = (Lua2cFunctionT) dlsym(dlHandle, funcName);
            if (!l2cFunction) {
                AFB_ApiError(apiHandle, "CTL-PLUGIN-LOADONE symbol'%s' missing err=%s", funcName, dlerror());
                return 1;
            }
            l2cFunc[index].func = (void*) l2cFunction;
            l2cFunc[index].name = strdup(l2cName);

            return 0;
        }

        int count = 0, errCount = 0;
        luaL_Reg *l2cFunc = NULL;
        if(!ctlPlugin->ctlL2cFunc) {
            ctlPlugin->ctlL2cFunc = calloc(1, sizeof(CtlLua2cFuncT));
        }

        ctlPlugin->ctlL2cFunc->prefix = (lua2c_prefix) ?
            lua2c_prefix :
            ctlPlugin->uid;

        // look on l2c command and push them to LUA
        if (json_object_get_type(lua2csJ) == json_type_array) {
            size_t length = json_object_array_length(lua2csJ);
            l2cFunc = calloc(length + ctlPlugin->ctlL2cFunc->l2cCount + 1, sizeof (luaL_Reg));
            for (count = 0; count < length; count++) {
                int err;
                const char *l2cName = json_object_get_string(json_object_array_get_idx(lua2csJ, count));
                err = Lua2cAddOne(l2cFunc, l2cName, count);
                if (err) errCount++;
            }
        } else {
            l2cFunc = calloc(2 + ctlPlugin->ctlL2cFunc->l2cCount, sizeof (luaL_Reg));
            const char *l2cName = json_object_get_string(lua2csJ);
            errCount = Lua2cAddOne(l2cFunc, l2cName, count);
            count++;
        }
        if (errCount) {
            AFB_ApiError(apiHandle, "CTL-PLUGIN-LOADONE %d symbols not found in plugin='%s'", errCount, pluginpath);
            return -1;
        }
        int total = ctlPlugin->ctlL2cFunc->l2cCount + count;
        if(ctlPlugin->ctlL2cFunc->l2cCount) {
            for (int offset = ctlPlugin->ctlL2cFunc->l2cCount; offset < total; offset++)
            {
                int index = offset - ctlPlugin->ctlL2cFunc->l2cCount;
                l2cFunc[index] = ctlPlugin->ctlL2cFunc->l2cFunc[index];
            }
            free(ctlPlugin->ctlL2cFunc->l2cFunc);
        }
        ctlPlugin->ctlL2cFunc->l2cFunc = l2cFunc;
        ctlPlugin->ctlL2cFunc->l2cCount = total;

        LuaL2cNewLib(ctlPlugin->ctlL2cFunc->l2cFunc, ctlPlugin->ctlL2cFunc->l2cCount, ctlPlugin->ctlL2cFunc->prefix);
    }
#endif
    DispatchPluginInstallCbT ctlPluginOnload = dlsym(dlHandle, "CtlPluginOnload");
    if (ctlPluginOnload) {
        ctlPlugin->api = apiHandle;
        if((*ctlPluginOnload) (ctlPlugin, handle)) {
            AFB_ApiError(apiHandle, "Plugin Onload function hasn't finish well. Abort initialization");
            return -1;
        }
    }

    return 0;
}

static int LoadFoundPlugins(AFB_ApiT apiHandle, json_object *scanResult, json_object *lua2csJ, const char *lua2c_prefix, void *handle, CtlPluginT *ctlPlugin)
{
    char pluginpath[CONTROL_MAXPATH_LEN];
    char *filename;
    char *fullpath;
    char *ext;
    int i;
    int len;
    json_object *object = NULL;

    pluginpath[CONTROL_MAXPATH_LEN - 1] = '\0';

    if (!json_object_is_type(scanResult, json_type_array))
        return -1;

    len = (int)json_object_array_length(scanResult);

    for (i = 0; i < len; ++i) {
        object = json_object_array_get_idx(scanResult, i);
        int err = wrap_json_unpack(object, "{s:s, s:s !}",
                "fullpath", &fullpath,
                "filename", &filename);

        if (err) {
            AFB_ApiError(apiHandle, "HOOPs invalid plugin file path=\n-- %s", json_object_get_string(scanResult));
            return -1;
        }

        ext = strrchr(filename, '.');
        strncpy(pluginpath, fullpath, CONTROL_MAXPATH_LEN - 1);
        strncat(pluginpath, "/", CONTROL_MAXPATH_LEN - strlen(pluginpath) - 1);
        strncat(pluginpath, filename, CONTROL_MAXPATH_LEN - strlen (pluginpath) - 1);

        if(!strcasecmp(ext, CTL_PLUGIN_EXT)) {
            /* Make sure you don't load two found libraries */
            if(ext && !strcasecmp(ext, CTL_PLUGIN_EXT) && i > 0) {
                AFB_ApiWarning(apiHandle, "Plugin multiple instances in searchpath will use %s/%s", fullpath, filename);
                return 0;
            }
            PluginLoadCOne(apiHandle, pluginpath, lua2csJ, lua2c_prefix, handle, ctlPlugin);
        }
        else if(!strcasecmp(ext, CTL_SCRIPT_EXT)) {
            ctlPlugin->api = apiHandle;
            ctlPlugin->context = handle;
            LuaLoadScript(pluginpath);
        }
    }

    return 0;
}

static char *GetDefaultSearchPath(AFB_ApiT apiHandle)
{
    char *searchPath;
    const char *bindingPath;
    const char *envPath;
    size_t bindingPath_len, envPath_len, CTL_PLGN_len;

    bindingPath = GetBindingDirPath(apiHandle);
    envPath = getenv("CONTROL_PLUGIN_PATH");
    bindingPath_len = strlen(bindingPath);
    envPath_len = envPath ? strlen(envPath) : 0;
    CTL_PLGN_len = envPath_len ? 0 : strlen(CONTROL_PLUGIN_PATH);

    /* Allocating with the size of binding root dir path + environment if found
     * + 2 for the NULL terminating character and the additionnal separator
     * between bindingPath and envPath concatenation.
     */
    if(envPath)  {
        searchPath = calloc(1, sizeof(char) *((bindingPath_len + envPath_len) + 2));
        strncat(searchPath, envPath, envPath_len);
    }
    else {
        searchPath = calloc(1, sizeof(char) * ((bindingPath_len + CTL_PLGN_len) + 2));
        strncat(searchPath, CONTROL_PLUGIN_PATH, CTL_PLGN_len);
    }

    strncat(searchPath, ":", sizeof(searchPath) - 1);
    strncat(searchPath, bindingPath, bindingPath_len);

    return searchPath;
}

static int FindPlugins(AFB_ApiT apiHandle, const char *searchPath, const char *file, json_object **pluginPathJ)
{
    *pluginPathJ = ScanForConfig(searchPath, CTL_SCAN_RECURSIVE, file, NULL);
    if (!*pluginPathJ || json_object_array_length(*pluginPathJ) == 0) {
        AFB_ApiError(apiHandle, "CTL-PLUGIN-LOADONE Missing plugin=%s* (config ldpath?) search=\n-- %s", file, searchPath);
        return -1;
    }

    return 0;
}

static int PluginLoad (AFB_ApiT apiHandle, CtlPluginT *ctlPlugin, json_object *pluginJ, void *handle)
{
    int err = 0, i = 0;
    char *searchPath;
    const char *sPath = NULL, *file = NULL, *lua2c_prefix = NULL;
    json_object *luaJ = NULL, *lua2csJ = NULL, *fileJ = NULL, *pluginPathJ = NULL;

    // plugin initialises at 1st load further init actions should be place into onload section
    if (!pluginJ) return 0;

    err = wrap_json_unpack(pluginJ, "{ss,s?s,s?s,s?o,s?o !}",
            "uid", &ctlPlugin->uid,
            "info", &ctlPlugin->info,
            "spath", &sPath,
            "libs", &fileJ,
            "lua", &luaJ
            );
    if (err) {
        AFB_ApiError(apiHandle, "CTL-PLUGIN-LOADONE Plugin missing uid|[info]|libs|[spath]|[lua] in:\n-- %s", json_object_get_string(pluginJ));
        return 1;
    }

    if(luaJ) {
        err = wrap_json_unpack(luaJ, "{ss,s?o !}",
            "prefix", &lua2c_prefix,
            "functions", &lua2csJ);
        if(err) {
            AFB_ApiError(apiHandle, "CTL-PLUGIN-LOADONE Missing 'function' in:\n-- %s", json_object_get_string(pluginJ));
            return 1;
        }
    }

    // if search path not in Json config file, then try default
    searchPath = (sPath) ?
        strdup(sPath) :
        GetDefaultSearchPath(apiHandle);

    // default file equal uid
    if (!fileJ) {
        file = ctlPlugin->uid;
        if(FindPlugins(apiHandle, searchPath, file, &pluginPathJ)) {
            free(searchPath);
            if(pluginPathJ)
                json_object_put(pluginPathJ); // No more needs for that json_object.
            return 1;
        }
        LoadFoundPlugins(apiHandle, pluginPathJ, lua2csJ, lua2c_prefix, handle, ctlPlugin);
    }
    else if(json_object_is_type(fileJ, json_type_string)) {
        file = json_object_get_string(fileJ);
        if(FindPlugins(apiHandle, searchPath, file, &pluginPathJ)) {
            free(searchPath);
            json_object_put(pluginPathJ); // No more needs for that json_object.
            return 1;
        }
        LoadFoundPlugins(apiHandle, pluginPathJ, lua2csJ, lua2c_prefix, handle, ctlPlugin);
    }
    else if(json_object_is_type(fileJ, json_type_array)) {
        for(i = 0; i < json_object_array_length(fileJ);++i) {
            file = json_object_get_string(json_object_array_get_idx(fileJ, i));
            if(FindPlugins(apiHandle, searchPath, file, &pluginPathJ)) {
                free(searchPath);
                json_object_put(pluginPathJ); // No more needs for that json_object.
                return 1;
            }
            LoadFoundPlugins(apiHandle, pluginPathJ, lua2csJ, lua2c_prefix, handle, ctlPlugin);
        }
    }

    if(err) {
        free(searchPath);
        json_object_put(pluginPathJ); // No more needs for that json_object.
        return 1;
    }

    free(searchPath);
    json_object_put(pluginPathJ); // No more needs for that json_object.
    return 0;
}


int PluginConfig(AFB_ApiT apiHandle, CtlSectionT *section, json_object *pluginsJ) {
    int err = 0;
    int idx = 0;
    int length = 0;

    if (ctlPlugins)
    {
        while(ctlPlugins[idx].uid != NULL)
        {
            // Jose hack to make verbosity visible from sharedlib and
            // be able to call verb from others api inside the binder
            struct afb_binding_data_v2 *afbHidenData = dlsym(ctlPlugins[idx++].dlHandle, "afbBindingV2data");
            if (afbHidenData) *afbHidenData = afbBindingV2data;
        }
        return 0;
    }
    else
    {
        if (json_object_get_type(pluginsJ) == json_type_array) {
            length = (int)json_object_array_length(pluginsJ);
            ctlPlugins = calloc (length+1, sizeof(CtlPluginT));
            for (idx=0; idx < length; idx++) {
                json_object *pluginJ = json_object_array_get_idx(pluginsJ, idx);
                err += PluginLoad(apiHandle, &ctlPlugins[idx], pluginJ, section->handle);
            }
        } else {
            ctlPlugins = calloc (2, sizeof(CtlPluginT));
            err += PluginLoad(apiHandle, &ctlPlugins[0], pluginsJ, section->handle);
        }
    }

    return err;
}