/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright 2013 Olaf Wintermann. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <dlfcn.h>
#include <cx/string.h>
#include "../daemon/func.h"
#include "../daemon/log.h"
#include "../daemon/config.h"
#include "init.h"
int init_test(pblock *pb, Session *sn, Request *rq) {
printf("init-test\n");
return REQ_PROCEED;
}
int load_modules(pblock *pb, Session *sn, Request *rq) {
char *shlib = pblock_findval("shlib", pb);
char *funcs = pblock_findval("funcs", pb);
if(shlib == NULL || funcs == NULL) {
log_ereport(LOG_MISCONFIG, "load-modules: missing parameters");
if(!shlib && funcs) {
log_ereport(
LOG_MISCONFIG,
"load-modules: missing shlib parameter");
} else if(!shlib && !funcs) {
log_ereport(
LOG_MISCONFIG,
"load-modules: missing funcs parameter");
} else {
log_ereport(
LOG_MISCONFIG,
"load-modules: missing shlib and funcs parameters");
}
}
// load lib
void *lib = dlopen(shlib, RTLD_GLOBAL | RTLD_NOW);
if(lib == NULL) {
char *dlerr = dlerror();
fprintf(stderr, "Cannot load library %s %s\n", shlib, dlerr);
log_ereport(LOG_FAILURE, "Cannot load library %s: %s", shlib, dlerr);
return REQ_ABORTED;
}
// load function symbols
pool_handle_t *init_pool = cfg_get_init_pool();
int b = 0;
for(int i=0;;i++) {
if(funcs[i] == '-') {
funcs[i] = '_';
}
if(funcs[i] == ',' || funcs[i] == 0) {
if(funcs[i] == 0) {
b = 1;
}
// TODO: although this works fine, is not really clean to just
// destroy the string with random 0-bytes
// maybe use cxstr here
funcs[i] = 0;
// we have a function name
void *sym = dlsym(lib, funcs);
if(sym == NULL) {
fprintf(stderr, "Cannot load symbol %s\n", funcs);
dlclose(lib);
return REQ_ABORTED;
}
struct FuncStruct fc;
ZERO(&fc, sizeof(struct FuncStruct));
fc.func = (FuncPtr)sym;
fc.name = pool_strdup(init_pool, funcs);
add_function(&fc);
if(b) {
break;
}
funcs += i + 1;
i = 0;
}
}
// if exists, execute nsapi_module_init
void *sym = dlsym(lib, "nsapi_module_init");
if(sym) {
/*
* We remove shlib and funcs from the pblock. The module init function
* gets all remaining parameters.
*/
pblock_remove("shlib", pb);
pblock_remove("funcs", pb);
FuncPtr init_func = (FuncPtr)sym;
int ret = init_func(pb, NULL, NULL);
if(ret != REQ_PROCEED && ret != REQ_NOACTION) {
log_ereport(
LOG_FAILURE,
"nsapi_module_init for module %s failed",
shlib);
return REQ_ABORTED;
}
}
return REQ_PROCEED;
}