2002-03-24 22:47:35 +00:00
|
|
|
|
/*
|
|
|
|
|
* ctx.c: Context related functions
|
|
|
|
|
*
|
|
|
|
|
* Copyright (C) 2002 Juha Yrj<EFBFBD>l<EFBFBD> <juha.yrjola@iki.fi>
|
|
|
|
|
*
|
|
|
|
|
* This library is free software; you can redistribute it and/or
|
|
|
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
|
|
|
* License as published by the Free Software Foundation; either
|
|
|
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
|
|
|
*
|
|
|
|
|
* This library is distributed in the hope that it will be useful,
|
|
|
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
|
|
|
* Lesser General Public License for more details.
|
|
|
|
|
*
|
|
|
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
|
|
|
* License along with this library; if not, write to the Free Software
|
|
|
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
|
|
|
#include "config.h"
|
|
|
|
|
#endif
|
|
|
|
|
#include "sc-internal.h"
|
|
|
|
|
#include "sc-log.h"
|
|
|
|
|
#include <stdio.h>
|
|
|
|
|
#include <stdlib.h>
|
|
|
|
|
#include <string.h>
|
|
|
|
|
#include <assert.h>
|
|
|
|
|
|
|
|
|
|
int _sc_add_reader(struct sc_context *ctx, struct sc_reader *reader)
|
|
|
|
|
{
|
|
|
|
|
assert(reader != NULL);
|
|
|
|
|
reader->ctx = ctx;
|
|
|
|
|
if (ctx->reader_count == SC_MAX_READERS)
|
|
|
|
|
return SC_ERROR_TOO_MANY_OBJECTS;
|
|
|
|
|
ctx->reader[ctx->reader_count] = reader;
|
|
|
|
|
ctx->reader_count++;
|
|
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
struct _sc_driver_entry {
|
|
|
|
|
char *name;
|
|
|
|
|
void *func;
|
|
|
|
|
char *libpath;
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
static const struct _sc_driver_entry internal_card_drivers[] = {
|
|
|
|
|
{ "setcos", sc_get_setcos_driver },
|
|
|
|
|
{ "miocos", sc_get_miocos_driver },
|
|
|
|
|
{ "flex", sc_get_flex_driver },
|
|
|
|
|
{ "tcos", sc_get_tcos_driver },
|
|
|
|
|
{ "emv", sc_get_emv_driver },
|
|
|
|
|
#ifdef HAVE_OPENSSL
|
|
|
|
|
{ "gpk", sc_get_gpk_driver },
|
|
|
|
|
#endif
|
|
|
|
|
/* The default driver should be last, as it handles all the
|
|
|
|
|
* unrecognized cards. */
|
|
|
|
|
{ "default", sc_get_default_driver },
|
|
|
|
|
{ NULL }
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
static const struct _sc_driver_entry internal_reader_drivers[] = {
|
|
|
|
|
#ifdef HAVE_LIBPCSCLITE
|
|
|
|
|
{ "pcsc", sc_get_pcsc_driver },
|
|
|
|
|
#endif
|
|
|
|
|
{ NULL }
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
struct _sc_ctx_options {
|
|
|
|
|
struct _sc_driver_entry rdrv[16];
|
|
|
|
|
int rcount;
|
|
|
|
|
struct _sc_driver_entry cdrv[16];
|
|
|
|
|
int ccount;
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
static void set_defaults(struct sc_context *ctx, struct _sc_ctx_options *opts)
|
|
|
|
|
{
|
|
|
|
|
ctx->debug = 0;
|
|
|
|
|
if (ctx->debug_file)
|
|
|
|
|
fclose(ctx->debug_file);
|
|
|
|
|
ctx->debug_file = NULL;
|
|
|
|
|
ctx->log_errors = 1;
|
|
|
|
|
ctx->error_file = stderr;
|
|
|
|
|
ctx->forced_driver = NULL;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static void del_drvs(struct _sc_ctx_options *opts, int type)
|
|
|
|
|
{
|
|
|
|
|
struct _sc_driver_entry *lst;
|
|
|
|
|
int *cp, i;
|
|
|
|
|
|
|
|
|
|
if (type == 0) {
|
|
|
|
|
lst = opts->rdrv;
|
|
|
|
|
cp = &opts->rcount;
|
|
|
|
|
} else {
|
|
|
|
|
lst = opts->cdrv;
|
|
|
|
|
cp = &opts->ccount;
|
|
|
|
|
}
|
|
|
|
|
for (i = 0; i < *cp; i++) {
|
|
|
|
|
free(lst[i].name);
|
|
|
|
|
if (lst[i].libpath)
|
|
|
|
|
free(lst[i].libpath);
|
|
|
|
|
}
|
|
|
|
|
*cp = 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static void add_drv(struct _sc_ctx_options *opts, int type, const char *name)
|
|
|
|
|
{
|
|
|
|
|
struct _sc_driver_entry *lst;
|
|
|
|
|
int *cp, i;
|
|
|
|
|
|
|
|
|
|
if (type == 0) {
|
|
|
|
|
lst = opts->rdrv;
|
|
|
|
|
cp = &opts->rcount;
|
|
|
|
|
} else {
|
|
|
|
|
lst = opts->cdrv;
|
|
|
|
|
cp = &opts->ccount;
|
|
|
|
|
}
|
|
|
|
|
if (*cp == 16) /* No space for more drivers... */
|
|
|
|
|
return;
|
|
|
|
|
for (i = 0; i < *cp; i++)
|
|
|
|
|
if (strcmp(name, lst[i].name) == 0)
|
|
|
|
|
return;
|
|
|
|
|
lst[*cp].name = strdup(name);
|
|
|
|
|
|
|
|
|
|
*cp = *cp + 1;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static void add_internal_drvs(struct _sc_ctx_options *opts, int type)
|
|
|
|
|
{
|
|
|
|
|
const struct _sc_driver_entry *lst;
|
|
|
|
|
int i;
|
|
|
|
|
|
|
|
|
|
if (type == 0)
|
|
|
|
|
lst = internal_reader_drivers;
|
|
|
|
|
else
|
|
|
|
|
lst = internal_card_drivers;
|
|
|
|
|
i = 0;
|
|
|
|
|
while (lst[i].name != NULL) {
|
|
|
|
|
add_drv(opts, type, lst[i].name);
|
|
|
|
|
i++;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static int load_parameters(struct sc_context *ctx, const char *app,
|
|
|
|
|
struct _sc_ctx_options *opts)
|
|
|
|
|
{
|
|
|
|
|
scconf_block **blocks = NULL;
|
|
|
|
|
int i, err = 0;
|
|
|
|
|
|
|
|
|
|
blocks = scconf_find_blocks(ctx->conf, NULL, "app");
|
|
|
|
|
for (i = 0; blocks[i]; i++) {
|
|
|
|
|
scconf_block *block = blocks[i];
|
|
|
|
|
const scconf_list *list;
|
|
|
|
|
const char *val;
|
|
|
|
|
const char *s_internal = "internal";
|
|
|
|
|
|
|
|
|
|
if (!block->name && strcmp(block->name->data, app))
|
|
|
|
|
continue;
|
|
|
|
|
val = scconf_find_value_first(block, "debug");
|
|
|
|
|
if (val)
|
|
|
|
|
sscanf(val, "%d", &ctx->debug);
|
|
|
|
|
val = scconf_find_value_first(block, "debug_file");
|
|
|
|
|
if (val) {
|
|
|
|
|
if (ctx->debug_file && ctx->debug_file != stdout)
|
|
|
|
|
fclose(ctx->debug_file);
|
|
|
|
|
if (strcmp(val, "stdout") == 0)
|
|
|
|
|
ctx->debug_file = fopen(val, "a");
|
|
|
|
|
else
|
|
|
|
|
ctx->debug_file = stdout;
|
|
|
|
|
}
|
|
|
|
|
val = scconf_find_value_first(block, "error_file");
|
|
|
|
|
if (val) {
|
|
|
|
|
if (ctx->error_file && ctx->error_file != stderr)
|
|
|
|
|
fclose(ctx->error_file);
|
|
|
|
|
if (strcmp(val, "stderr") != 0)
|
|
|
|
|
ctx->error_file = fopen(val, "a");
|
|
|
|
|
else
|
|
|
|
|
ctx->error_file = stderr;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
list = scconf_find_value(block, "reader_drivers");
|
|
|
|
|
if (list == NULL) {
|
|
|
|
|
if (opts->rcount == 0) /* Add the internal drivers */
|
|
|
|
|
add_internal_drvs(opts, 0);
|
|
|
|
|
} else
|
|
|
|
|
del_drvs(opts, 0);
|
|
|
|
|
while (list != NULL) {
|
|
|
|
|
if (strcmp(list->data, s_internal) == 0)
|
|
|
|
|
add_internal_drvs(opts, 1);
|
|
|
|
|
else
|
|
|
|
|
add_drv(opts, 0, list->data);
|
|
|
|
|
list = list->next;
|
|
|
|
|
}
|
|
|
|
|
if (err)
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
list = scconf_find_value(block, "card_drivers");
|
|
|
|
|
if (list == NULL) {
|
|
|
|
|
if (opts->ccount == 0) /* Add the internal drivers */
|
|
|
|
|
add_internal_drvs(opts, 1);
|
|
|
|
|
} else
|
|
|
|
|
del_drvs(opts, 1);
|
|
|
|
|
while (list != NULL) {
|
|
|
|
|
if (strcmp(list->data, s_internal) == 0)
|
|
|
|
|
add_internal_drvs(opts, 1);
|
|
|
|
|
else
|
|
|
|
|
add_drv(opts, 1, list->data);
|
|
|
|
|
list = list->next;
|
|
|
|
|
}
|
|
|
|
|
if (err)
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
free(blocks);
|
|
|
|
|
return err;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static int load_reader_drivers(struct sc_context *ctx,
|
|
|
|
|
struct _sc_ctx_options *opts)
|
|
|
|
|
{
|
|
|
|
|
const struct _sc_driver_entry *ent;
|
|
|
|
|
int drv_count;
|
|
|
|
|
int i;
|
|
|
|
|
|
|
|
|
|
for (drv_count = 0; ctx->reader_drivers[drv_count] != NULL; drv_count++);
|
|
|
|
|
|
|
|
|
|
for (i = 0; i < opts->rcount; i++) {
|
|
|
|
|
const struct sc_reader_driver * (* func)(void) = NULL;
|
|
|
|
|
int j;
|
|
|
|
|
|
|
|
|
|
ent = &opts->rdrv[i];
|
|
|
|
|
for (j = 0; internal_reader_drivers[j].name != NULL; j++)
|
|
|
|
|
if (strcmp(ent->name, internal_reader_drivers[j].name) == 0) {
|
|
|
|
|
func = internal_reader_drivers[j].func;
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
if (func == NULL) {
|
|
|
|
|
/* External driver */
|
|
|
|
|
/* FIXME: Load shared library */
|
|
|
|
|
error(ctx, "Unable to load '%s'. External drivers not supported yet.\n",
|
|
|
|
|
ent->name);
|
|
|
|
|
continue;
|
|
|
|
|
}
|
|
|
|
|
ctx->reader_drivers[drv_count] = func();
|
|
|
|
|
ctx->reader_drivers[drv_count]->ops->init(ctx, &ctx->reader_drv_data[i]);
|
|
|
|
|
drv_count++;
|
|
|
|
|
}
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static int load_card_drivers(struct sc_context *ctx,
|
|
|
|
|
struct _sc_ctx_options *opts)
|
|
|
|
|
{
|
|
|
|
|
const struct _sc_driver_entry *ent;
|
|
|
|
|
int drv_count;
|
|
|
|
|
int i;
|
|
|
|
|
|
|
|
|
|
for (drv_count = 0; ctx->card_drivers[drv_count] != NULL; drv_count++);
|
|
|
|
|
|
|
|
|
|
for (i = 0; i < opts->ccount; i++) {
|
|
|
|
|
const struct sc_card_driver * (* func)(void) = NULL;
|
|
|
|
|
int j;
|
|
|
|
|
|
|
|
|
|
ent = &opts->cdrv[i];
|
|
|
|
|
for (j = 0; internal_card_drivers[j].name != NULL; j++)
|
|
|
|
|
if (strcmp(ent->name, internal_card_drivers[j].name) == 0) {
|
|
|
|
|
func = internal_card_drivers[j].func;
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
if (func == NULL) {
|
|
|
|
|
/* External driver */
|
|
|
|
|
/* FIXME: Load shared library */
|
|
|
|
|
error(ctx, "Unable to load '%s'. External drivers not supported yet.\n",
|
|
|
|
|
ent->name);
|
|
|
|
|
continue;
|
|
|
|
|
}
|
|
|
|
|
ctx->card_drivers[drv_count] = func();
|
|
|
|
|
drv_count++;
|
|
|
|
|
}
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
int sc_establish_context(struct sc_context **ctx_out, const char *app_name)
|
|
|
|
|
{
|
|
|
|
|
const char *default_app = "default";
|
|
|
|
|
struct sc_context *ctx;
|
|
|
|
|
struct _sc_ctx_options opts;
|
|
|
|
|
int r;
|
|
|
|
|
|
|
|
|
|
assert(ctx_out != NULL);
|
|
|
|
|
ctx = malloc(sizeof(struct sc_context));
|
|
|
|
|
if (ctx == NULL)
|
|
|
|
|
return SC_ERROR_OUT_OF_MEMORY;
|
|
|
|
|
memset(ctx, 0, sizeof(struct sc_context));
|
|
|
|
|
memset(&opts, 0, sizeof(opts));
|
|
|
|
|
set_defaults(ctx, &opts);
|
|
|
|
|
ctx->app_name = app_name ? strdup(app_name) : strdup(default_app);
|
|
|
|
|
ctx->conf = scconf_init(OPENSC_CONF_PATH);
|
|
|
|
|
if (ctx->conf) {
|
|
|
|
|
r = scconf_parse(ctx->conf);
|
|
|
|
|
if (r < 1) {
|
|
|
|
|
scconf_deinit(ctx->conf);
|
|
|
|
|
ctx->conf = NULL;
|
|
|
|
|
} else {
|
|
|
|
|
load_parameters(ctx, default_app, &opts);
|
|
|
|
|
if (strcmp(default_app, ctx->app_name)) {
|
|
|
|
|
load_parameters(ctx, ctx->app_name, &opts);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
#ifdef HAVE_PTHREAD
|
|
|
|
|
pthread_mutex_init(&ctx->mutex, NULL);
|
|
|
|
|
#endif
|
|
|
|
|
load_reader_drivers(ctx, &opts);
|
|
|
|
|
load_card_drivers(ctx, &opts);
|
2002-03-24 22:54:41 +00:00
|
|
|
|
del_drvs(&opts, 0);
|
|
|
|
|
del_drvs(&opts, 1);
|
2002-03-24 22:47:35 +00:00
|
|
|
|
|
|
|
|
|
*ctx_out = ctx;
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
int sc_release_context(struct sc_context *ctx)
|
|
|
|
|
{
|
|
|
|
|
int i;
|
|
|
|
|
|
|
|
|
|
assert(ctx != NULL);
|
|
|
|
|
SC_FUNC_CALLED(ctx, 1);
|
|
|
|
|
for (i = 0; i < ctx->reader_count; i++) {
|
|
|
|
|
struct sc_reader *rdr = ctx->reader[i];
|
|
|
|
|
|
|
|
|
|
if (rdr->ops->release != NULL)
|
|
|
|
|
rdr->ops->release(rdr);
|
|
|
|
|
free(rdr->name);
|
|
|
|
|
free(rdr);
|
|
|
|
|
}
|
|
|
|
|
for (i = 0; ctx->reader_drivers[i] != NULL; i++) {
|
|
|
|
|
const struct sc_reader_driver *drv = ctx->reader_drivers[i];
|
|
|
|
|
|
|
|
|
|
if (drv->ops->finish != NULL)
|
|
|
|
|
drv->ops->finish(ctx->reader_drv_data[i]);
|
|
|
|
|
}
|
|
|
|
|
ctx->debug_file = ctx->error_file = NULL;
|
|
|
|
|
if (ctx->conf)
|
|
|
|
|
scconf_deinit(ctx->conf);
|
|
|
|
|
free(ctx->app_name);
|
|
|
|
|
free(ctx);
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
int sc_set_card_driver(struct sc_context *ctx, const char *short_name)
|
|
|
|
|
{
|
|
|
|
|
int i = 0, match = 0;
|
|
|
|
|
|
|
|
|
|
#ifdef HAVE_PTHREAD
|
|
|
|
|
pthread_mutex_lock(&ctx->mutex);
|
|
|
|
|
#endif
|
|
|
|
|
if (short_name == NULL) {
|
|
|
|
|
ctx->forced_driver = NULL;
|
|
|
|
|
match = 1;
|
|
|
|
|
} else while (ctx->card_drivers[i] != NULL && i < SC_MAX_CARD_DRIVERS) {
|
|
|
|
|
const struct sc_card_driver *drv = ctx->card_drivers[i];
|
|
|
|
|
|
|
|
|
|
if (strcmp(short_name, drv->short_name) == 0) {
|
|
|
|
|
ctx->forced_driver = drv;
|
|
|
|
|
match = 1;
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
i++;
|
|
|
|
|
}
|
|
|
|
|
#ifdef HAVE_PTHREAD
|
|
|
|
|
pthread_mutex_unlock(&ctx->mutex);
|
|
|
|
|
#endif
|
|
|
|
|
if (match == 0)
|
|
|
|
|
return SC_ERROR_OBJECT_NOT_FOUND; /* FIXME: invent error */
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
int sc_get_cache_dir(struct sc_context *ctx, char *buf, size_t bufsize)
|
|
|
|
|
{
|
|
|
|
|
char *homedir;
|
|
|
|
|
const char *cache_dir = ".eid/cache";
|
|
|
|
|
|
|
|
|
|
homedir = getenv("HOME");
|
|
|
|
|
if (homedir == NULL)
|
|
|
|
|
return SC_ERROR_INTERNAL;
|
|
|
|
|
if (snprintf(buf, bufsize, "%s/%s", homedir, cache_dir) < 0)
|
|
|
|
|
return SC_ERROR_BUFFER_TOO_SMALL;
|
|
|
|
|
return 0;
|
|
|
|
|
}
|