#ifndef lint
static char *rcsid = "$Id: checker.c,v 1.1 2003/06/04 00:25:49 marka Exp $";
#endif
#include <config.h>
#include <stddef.h>
#include <stdlib.h>
#include <string.h>
#include <idn/result.h>
#include <idn/assert.h>
#include <idn/logmacro.h>
#include <idn/checker.h>
#include <idn/strhash.h>
#include <idn/debug.h>
typedef struct {
char *prefix;
char *parameter;
idn_checker_createproc_t create;
idn_checker_destroyproc_t destroy;
idn_checker_lookupproc_t lookup;
void *context;
} check_scheme_t;
static const check_scheme_t rfc3491_prohibit_scheme = {
"prohibit#RFC3491",
"RFC3491",
idn_nameprep_createproc,
idn_nameprep_destroyproc,
idn_nameprep_prohibitproc,
NULL,
};
static const check_scheme_t rfc3491_unasigned_scheme = {
"unassigned#RFC3491",
"RFC3491",
idn_nameprep_createproc,
idn_nameprep_destroyproc,
idn_nameprep_unassignedproc,
NULL,
};
static const check_scheme_t rfc3491_bidi_scheme = {
"bidi#RFC3491",
"RFC3491",
idn_nameprep_createproc,
idn_nameprep_destroyproc,
idn_nameprep_bidiproc,
NULL,
};
static const check_scheme_t filecheck_prohibit_scheme = {
"prohibit#fileset",
NULL,
idn__filechecker_createproc,
idn__filechecker_destroyproc,
idn__filechecker_lookupproc,
NULL,
};
static const check_scheme_t filecheck_unassigned_scheme = {
"unassigned#fileset",
NULL,
idn__filechecker_createproc,
idn__filechecker_destroyproc,
idn__filechecker_lookupproc,
NULL,
};
static const check_scheme_t *standard_check_schemes[] = {
&rfc3491_unasigned_scheme,
&rfc3491_prohibit_scheme,
&rfc3491_bidi_scheme,
&filecheck_prohibit_scheme,
&filecheck_unassigned_scheme,
NULL,
};
static idn__strhash_t scheme_hash = NULL;
struct idn_checker {
int nschemes;
int scheme_size;
check_scheme_t *schemes;
int reference_count;
};
#define MAPPER_INITIAL_SCHEME_SIZE 1
idn_result_t
idn_checker_initialize(void) {
idn_result_t r;
check_scheme_t **scheme;
TRACE(("idn_checker_initialize()\n"));
if (scheme_hash != NULL) {
r = idn_success;
goto ret;
}
r = idn__strhash_create(&scheme_hash);
if (r != idn_success) {
goto ret;
}
for (scheme = (check_scheme_t **)standard_check_schemes;
*scheme != NULL; scheme++) {
r = idn__strhash_put(scheme_hash, (*scheme)->prefix, *scheme);
if (r != idn_success)
goto ret;
}
r = idn_success;
ret:
if (r != idn_success) {
if (scheme_hash != NULL) {
idn__strhash_destroy(scheme_hash, NULL);
scheme_hash = NULL;
}
}
TRACE(("idn_checker_initialize(): %s\n", idn_result_tostring(r)));
return (r);
}
idn_result_t
idn_checker_create(idn_checker_t *ctxp) {
idn_checker_t ctx = NULL;
idn_result_t r;
assert(scheme_hash != NULL);
assert(ctxp != NULL);
TRACE(("idn_checker_create()\n"));
ctx = (idn_checker_t) malloc(sizeof(struct idn_checker));
if (ctx == NULL) {
r = idn_nomemory;
goto ret;
}
ctx->schemes = (check_scheme_t *) malloc(sizeof(check_scheme_t)
* MAPPER_INITIAL_SCHEME_SIZE);
if (ctx->schemes == NULL) {
r = idn_nomemory;
goto ret;
}
ctx->nschemes = 0;
ctx->scheme_size = MAPPER_INITIAL_SCHEME_SIZE;
ctx->reference_count = 1;
*ctxp = ctx;
r = idn_success;
ret:
if (r != idn_success) {
if (ctx != NULL)
free(ctx->schemes);
free(ctx);
}
TRACE(("idn_checker_create(): %s\n", idn_result_tostring(r)));
return (r);
}
void
idn_checker_destroy(idn_checker_t ctx) {
int i;
assert(scheme_hash != NULL);
assert(ctx != NULL);
TRACE(("idn_checker_destroy()\n"));
ctx->reference_count--;
if (ctx->reference_count <= 0) {
TRACE(("idn_checker_destroy(): the object is destroyed\n"));
for (i = 0; i < ctx->nschemes; i++)
ctx->schemes[i].destroy(ctx->schemes[i].context);
free(ctx->schemes);
free(ctx);
} else {
TRACE(("idn_checker_destroy(): "
"update reference count (%d->%d)\n",
ctx->reference_count + 1, ctx->reference_count));
}
}
void
idn_checker_incrref(idn_checker_t ctx) {
assert(ctx != NULL && scheme_hash != NULL);
TRACE(("idn_checker_incrref()\n"));
TRACE(("idn_checker_incrref: update reference count (%d->%d)\n",
ctx->reference_count, ctx->reference_count + 1));
ctx->reference_count++;
}
idn_result_t
idn_checker_add(idn_checker_t ctx, const char *scheme_name) {
idn_result_t r;
check_scheme_t *scheme;
const char *scheme_prefix;
const char *scheme_parameter;
void *scheme_context = NULL;
char *buffer = NULL;
assert(scheme_hash != NULL);
assert(ctx != NULL);
TRACE(("idn_checker_add(scheme_name=%s)\n",
idn__debug_xstring(scheme_name, 50)));
scheme_parameter = strchr(scheme_name, ':');
if (scheme_parameter == NULL) {
scheme_prefix = scheme_name;
scheme_parameter = NULL;
} else {
ptrdiff_t scheme_prefixlen;
scheme_prefixlen = scheme_parameter - scheme_name;
buffer = (char *) malloc(scheme_prefixlen + 1);
if (buffer == NULL) {
r = idn_nomemory;
goto ret;
}
memcpy(buffer, scheme_name, scheme_prefixlen);
*(buffer + scheme_prefixlen) = '\0';
scheme_prefix = buffer;
scheme_parameter++;
}
if (idn__strhash_get(scheme_hash, scheme_prefix, (void **)&scheme)
!= idn_success) {
ERROR(("idn_checker_add(): invalid scheme \"%-.30s\"\n",
scheme_name));
r = idn_invalid_name;
goto ret;
}
if (scheme_parameter == NULL && scheme->parameter != NULL)
scheme_parameter = scheme->parameter;
assert(ctx->nschemes <= ctx->scheme_size);
if (ctx->nschemes == ctx->scheme_size) {
check_scheme_t *new_schemes;
new_schemes = (check_scheme_t *) realloc(ctx->schemes,
sizeof(check_scheme_t) * ctx->scheme_size * 2);
if (new_schemes == NULL) {
r = idn_nomemory;
goto ret;
}
ctx->schemes = new_schemes;
ctx->scheme_size *= 2;
}
r = scheme->create(scheme_parameter, &scheme_context);
if (r != idn_success)
goto ret;
memcpy(ctx->schemes + ctx->nschemes, scheme, sizeof(check_scheme_t));
ctx->schemes[ctx->nschemes].context = scheme_context;
ctx->nschemes++;
r = idn_success;
ret:
free(buffer);
if (r != idn_success)
free(scheme_context);
TRACE(("idn_checker_add(): %s\n", idn_result_tostring(r)));
return (r);
}
idn_result_t
idn_checker_addall(idn_checker_t ctx, const char **scheme_names,
int nschemes) {
idn_result_t r;
int i;
assert(scheme_hash != NULL);
assert(ctx != NULL && scheme_names != NULL);
TRACE(("idn_checker_addall(nschemes=%d)\n", nschemes));
for (i = 0; i < nschemes; i++) {
r = idn_checker_add(ctx, (const char *)*scheme_names);
if (r != idn_success)
goto ret;
scheme_names++;
}
r = idn_success;
ret:
TRACE(("idn_checker_addall(): %s\n", idn_result_tostring(r)));
return (r);
}
idn_result_t
idn_checker_lookup(idn_checker_t ctx, const unsigned long *ucs4,
const unsigned long **found) {
idn_result_t r;
int i;
assert(scheme_hash != NULL);
assert(ctx != NULL && ucs4 != NULL && found != NULL);
TRACE(("idn_checker_lookup(ucs4=\"%s\")\n",
idn__debug_ucs4xstring(ucs4, 50)));
*found = NULL;
for (i = 0; i < ctx->nschemes; i++) {
TRACE(("idn_checker_lookup(): lookup %s\n",
ctx->schemes[i].prefix));
r = (ctx->schemes[i].lookup)(ctx->schemes[i].context, ucs4,
found);
if (r != idn_success)
goto ret;
if (*found != NULL)
break;
}
r = idn_success;
ret:
if (*found == NULL) {
TRACE(("idn_checker_lookup(): %s (not found)\n",
idn_result_tostring(r)));
} else {
TRACE(("idn_checker_lookup(): %s (found \\x%04lx)\n",
idn_result_tostring(r), **found));
}
return (r);
}
idn_result_t
idn_checker_register(const char *prefix,
idn_checker_createproc_t create,
idn_checker_destroyproc_t destroy,
idn_checker_lookupproc_t lookup) {
idn_result_t r;
check_scheme_t *scheme = NULL;
assert(scheme_hash != NULL);
assert(prefix != NULL && create != NULL && destroy != NULL &&
lookup != NULL);
TRACE(("idn_checker_register(prefix=%s)\n", prefix));
scheme = (check_scheme_t *) malloc(sizeof(check_scheme_t));
if (scheme == NULL) {
r = idn_nomemory;
goto ret;
}
scheme->prefix = (char *) malloc(strlen(prefix) + 1);
if (scheme->prefix == NULL) {
r = idn_nomemory;
goto ret;
}
strcpy(scheme->prefix, prefix);
scheme->parameter = NULL;
scheme->create = create;
scheme->destroy = destroy;
scheme->lookup = lookup;
r = idn__strhash_put(scheme_hash, prefix, scheme);
ret:
if (r != idn_success) {
if (scheme != NULL)
free(scheme->prefix);
free(scheme);
}
TRACE(("idn_checker_register(): %s\n", idn_result_tostring(r)));
return (r);
}