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Add support for dynamic modules that contain a struct pam_module. 

git-svn-id: svn+ssh://svn.openpam.org/svn/openpam/trunk@433 185d5e19-27fe-0310-9dcf-9bff6b9f3609
This commit is contained in:
Dag-Erling Smørgrav 2010-03-10 11:34:36 +00:00
parent d62a8932a7
commit 385eb53d63
1 changed files with 9 additions and 6 deletions
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15
lib/openpam_dynamic.c
View File

@ -61,6 +61,7 @@
pam_module_t *
openpam_dynamic(const char *path)
{
const pam_module_t *dlmodule;
pam_module_t *module;
const char *prefix;
char *vpath;
@ -68,8 +69,6 @@ openpam_dynamic(const char *path)
int i;
dlh = NULL;
if ((module = calloc(1, sizeof *module)) == NULL)
goto buf_err;
/* Prepend the standard prefix if not an absolute pathname. */
if (path[0] != '/')
@ -79,33 +78,37 @@ openpam_dynamic(const char *path)
/* try versioned module first, then unversioned module */
if (asprintf(&vpath, "%s%s.%d", prefix, path, LIB_MAJ) < 0)
goto buf_err;
goto err;
if ((dlh = dlopen(vpath, RTLD_NOW)) == NULL) {
openpam_log(PAM_LOG_DEBUG, "%s: %s", vpath, dlerror());
*strrchr(vpath, '.') = '\0';
if ((dlh = dlopen(vpath, RTLD_NOW)) == NULL) {
openpam_log(PAM_LOG_DEBUG, "%s: %s", vpath, dlerror());
FREE(vpath);
FREE(module);
return (NULL);
}
}
FREE(vpath);
if ((module = calloc(1, sizeof *module)) == NULL)
goto buf_err;
if ((module->path = strdup(path)) == NULL)
goto buf_err;
module->dlh = dlh;
dlmodule = dlsym(dlh, "_pam_module");
for (i = 0; i < PAM_NUM_PRIMITIVES; ++i) {
module->func[i] = (pam_func_t)dlsym(dlh, _pam_sm_func_name[i]);
module->func[i] = dlmodule ? dlmodule->func[i] :
(pam_func_t)dlsym(dlh, _pam_sm_func_name[i]);
if (module->func[i] == NULL)
openpam_log(PAM_LOG_DEBUG, "%s: %s(): %s",
path, _pam_sm_func_name[i], dlerror());
}
return (module);
buf_err:
openpam_log(PAM_LOG_ERROR, "%m");
if (dlh != NULL)
dlclose(dlh);
FREE(module);
err:
openpam_log(PAM_LOG_ERROR, "%m");
return (NULL);
}