static const char *load_module(cmd_parms *cmd, void *dummy,
const char *modname, const char *filename)
{
apr_dso_handle_t *modhandle;
apr_dso_handle_sym_t modsym;
module *modp;
const char *szModuleFile = ap_server_root_relative(cmd->pool, filename);
so_server_conf *sconf;
ap_module_symbol_t *modi;
ap_module_symbol_t *modie;
int i;
const char *error;
/* we need to setup this value for dummy to make sure that we don't try
* to add a non-existant tree into the build when we return to
* execute_now.
*/
*(ap_directive_t **)dummy = NULL;
if (!szModuleFile) {
return apr_pstrcat(cmd->pool, "Invalid LoadModule path ",
filename, NULL);
}
/*
* check for already existing module
* If it already exists, we have nothing to do
* Check both dynamically-loaded modules and statically-linked modules.
*/
sconf = (so_server_conf *)ap_get_module_config(cmd->server->module_config,
&so_module);
modie = (ap_module_symbol_t *)sconf->loaded_modules->elts;
for (i = 0; i < sconf->loaded_modules->nelts; i++) {
modi = &modie[i];
if (modi->name != NULL && strcmp(modi->name, modname) == 0) {
ap_log_perror(APLOG_MARK, APLOG_WARNING, 0,
cmd->pool, "module %s is already loaded, skipping",
modname);
return NULL;
}
}
for (i = 0; ap_preloaded_modules[i]; i++) {
const char *preload_name;
apr_size_t preload_len;
apr_size_t thismod_len;
modp = ap_preloaded_modules[i];
/* make sure we're comparing apples with apples
* make sure name of preloaded module is mod_FOO.c
* make sure name of structure being loaded is FOO_module
*/
if (memcmp(modp->name, "mod_", 4)) {
continue;
}
preload_name = modp->name + strlen("mod_");
preload_len = strlen(preload_name) - 2;
if (strlen(modname) <= strlen("_module")) {
continue;
}
thismod_len = strlen(modname) - strlen("_module");
if (strcmp(modname + thismod_len, "_module")) {
continue;
}
if (thismod_len != preload_len) {
continue;
}
if (!memcmp(modname, preload_name, preload_len)) {
return apr_pstrcat(cmd->pool, "module ", modname,
" is built-in and can't be loaded",
NULL);
}
}
modi = apr_array_push(sconf->loaded_modules);
modi->name = modname;
/*
* Load the file into the Apache address space
*/
if (apr_dso_load(&modhandle, szModuleFile, cmd->pool) != APR_SUCCESS) {
char my_error[256];
return apr_pstrcat(cmd->pool, "Cannot load ", szModuleFile,
" into server: ",
apr_dso_error(modhandle, my_error, sizeof(my_error)),
NULL);
}
ap_log_perror(APLOG_MARK, APLOG_DEBUG, 0, cmd->pool,
"loaded module %s", modname);
/*
* Retrieve the pointer to the module structure through the module name:
* First with the hidden variant (prefix `AP_') and then with the plain
* symbol name.
*/
if (apr_dso_sym(&modsym, modhandle, modname) != APR_SUCCESS) {
char my_error[256];
return apr_pstrcat(cmd->pool, "Can't locate API module structure `",
modname, "' in file ", szModuleFile, ": ",
apr_dso_error(modhandle, my_error, sizeof(my_error)),
NULL);
}
modp = (module*) modsym;
modp->dynamic_load_handle = (apr_dso_handle_t *)modhandle;
modi->modp = modp;
/*
* Make sure the found module structure is really a module structure
*
*/
if (modp->magic != MODULE_MAGIC_COOKIE) {
return apr_pstrcat(cmd->pool, "API module structure `", modname,
"' in file ", szModuleFile, " is garbled -"
" perhaps this is not an Apache module DSO?", NULL);
}
/*
* Add this module to the Apache core structures
*/
error = ap_add_loaded_module(modp, cmd->pool);
if (error) {
return error;
}
/*
* Register a cleanup in the config apr_pool_t (normally pconf). When
* we do a restart (or shutdown) this cleanup will cause the
* shared object to be unloaded.
*/
apr_pool_cleanup_register(cmd->pool, modi, unload_module, apr_pool_cleanup_null);
/*
* Finally we need to run the configuration process for the module
*/
ap_single_module_configure(cmd->pool, cmd->server, modp);
return NULL;
}
static const char *load_module(cmd_parms *cmd, void *dummy,
char *modname, char *filename)
{
ap_os_dso_handle_t modhandle;
module *modp;
const char *szModuleFile=ap_server_root_relative(cmd->pool, filename);
so_server_conf *sconf;
moduleinfo *modi;
moduleinfo *modie;
int i;
const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
if (err != NULL) {
return err;
}
/*
* check for already existing module
* If it already exists, we have nothing to do
*/
sconf = (so_server_conf *)ap_get_module_config(cmd->server->module_config,
&so_module);
modie = (moduleinfo *)sconf->loaded_modules->elts;
for (i = 0; i < sconf->loaded_modules->nelts; i++) {
modi = &modie[i];
if (modi->name != NULL && strcmp(modi->name, modname) == 0) {
ap_log_error(APLOG_MARK, APLOG_WARNING|APLOG_NOERRNO, cmd->server,
"module %s is already loaded, skipping", modname);
return NULL;
}
}
modi = ap_push_array(sconf->loaded_modules);
modi->name = modname;
/*
* Load the file into the Apache address space
*/
ap_server_strip_chroot(szModuleFile, 0);
if (!(modhandle = ap_os_dso_load(szModuleFile))) {
const char *my_error = ap_os_dso_error();
return ap_pstrcat (cmd->pool, "Cannot load ", szModuleFile,
" into server: ",
my_error ? my_error : "(reason unknown)",
NULL);
}
ap_log_error(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, NULL,
"loaded module %s", modname);
/*
* Retrieve the pointer to the module structure through the module name:
* First with the hidden variant (prefix `AP_') and then with the plain
* symbol name.
*/
if (!(modp = (module *)(ap_os_dso_sym(modhandle, modname)))) {
return ap_pstrcat(cmd->pool, "Can't locate API module structure `", modname,
"' in file ", szModuleFile, ": ", ap_os_dso_error(), NULL);
}
modi->modp = modp;
modp->dynamic_load_handle = (void *)modhandle;
/*
* Make sure the found module structure is really a module structure
*
*/
if ( modp->magic != MODULE_MAGIC_COOKIE_AP13
&& modp->magic != MODULE_MAGIC_COOKIE_EAPI) {
return ap_pstrcat(cmd->pool, "API module structure `", modname,
"' in file ", szModuleFile, " is garbled -"
" perhaps this is not an Apache module DSO?", NULL);
}
if (modp->magic == MODULE_MAGIC_COOKIE_AP13) {
ap_log_error(APLOG_MARK, APLOG_WARNING|APLOG_NOERRNO, NULL,
"Loaded DSO %s uses plain Apache 1.3 API, "
"this module might crash under EAPI! "
"(please recompile it with -DEAPI)", filename);
}
/*
* Add this module to the Apache core structures
*/
ap_add_loaded_module(modp);
/*
* Register a cleanup in the config pool (normally pconf). When
* we do a restart (or shutdown) this cleanup will cause the
* shared object to be unloaded.
*/
ap_register_cleanup(cmd->pool, modi,
(void (*)(void*))unload_module, ap_null_cleanup);
/*
* Finally we need to run the configuration process for the module
*/
ap_single_module_configure(cmd->pool, cmd->server, modp);
return NULL;
}