84 lines
1.8 KiB
C
84 lines
1.8 KiB
C
/*
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* Convenience pkcs11 library that can be linked into an application,
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* and will bind to a specific pkcs11 module.
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*
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* Copyright (C) 2002 Olaf Kirch <okir@lst.de>
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*/
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#include "config.h"
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include "pkcs11/pkcs11.h"
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#include "common/libscdl.h"
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#include "common/libpkcs11.h"
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#define MAGIC 0xd00bed00
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struct sc_pkcs11_module {
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unsigned int _magic;
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void *handle;
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};
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typedef struct sc_pkcs11_module sc_pkcs11_module_t;
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/*
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* Load a module - this will load the shared object, call
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* C_Initialize, and get the list of function pointers
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*/
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void *
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C_LoadModule(const char *mspec, CK_FUNCTION_LIST_PTR_PTR funcs)
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{
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sc_pkcs11_module_t *mod;
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CK_RV rv, (*c_get_function_list)(CK_FUNCTION_LIST_PTR_PTR);
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mod = calloc(1, sizeof(*mod));
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mod->_magic = MAGIC;
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if (mspec == NULL) {
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free(mod);
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return NULL;
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}
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mod->handle = sc_dlopen(mspec);
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if (mod->handle == NULL) {
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fprintf(stderr, "sc_dlopen failed: %s\n", sc_dlerror());
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goto failed;
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}
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/* Get the list of function pointers */
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c_get_function_list = (CK_RV (*)(CK_FUNCTION_LIST_PTR_PTR))
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sc_dlsym(mod->handle, "C_GetFunctionList");
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if (!c_get_function_list)
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goto failed;
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rv = c_get_function_list(funcs);
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if (rv == CKR_OK)
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return (void *) mod;
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else
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fprintf(stderr, "C_GetFunctionList failed %lx", rv);
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failed:
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C_UnloadModule((void *) mod);
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return NULL;
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}
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/*
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* Unload a pkcs11 module.
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* The calling application is responsible for cleaning up
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* and calling C_Finalize
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*/
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CK_RV
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C_UnloadModule(void *module)
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{
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sc_pkcs11_module_t *mod = (sc_pkcs11_module_t *) module;
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if (!mod || mod->_magic != MAGIC)
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return CKR_ARGUMENTS_BAD;
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if (sc_dlclose(mod->handle) < 0)
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return CKR_FUNCTION_FAILED;
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memset(mod, 0, sizeof(*mod));
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free(mod);
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return CKR_OK;
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}
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