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/*
* Copyright (C) the libgit2 contributors. All rights reserved.
*
* This file is part of libgit2, distributed under the GNU GPL v2 with
* a Linking Exception. For full terms see the included COPYING file.
*/
#include "git2/errors.h"
#include "common.h"
#include "global.h"
#include "streams/tls.h"
#include "streams/mbedtls.h"
#include "streams/openssl.h"
#include "streams/stransport.h"
struct stream_registry {
git_rwlock lock;
git_stream_registration callbacks;
git_stream_registration tls_callbacks;
};
static struct stream_registry stream_registry;
static void shutdown_stream_registry(void)
{
git_rwlock_free(&stream_registry.lock);
}
int git_stream_registry_global_init(void)
{
if (git_rwlock_init(&stream_registry.lock) < 0)
return -1;
git__on_shutdown(shutdown_stream_registry);
return 0;
}
GIT_INLINE(void) stream_registration_cpy(
git_stream_registration *target,
git_stream_registration *src)
{
if (src)
memcpy(target, src, sizeof(git_stream_registration));
else
memset(target, 0, sizeof(git_stream_registration));
}
int git_stream_registry_lookup(git_stream_registration *out, git_stream_t type)
{
git_stream_registration *target;
int error = GIT_ENOTFOUND;
assert(out);
switch(type) {
case GIT_STREAM_STANDARD:
target = &stream_registry.callbacks;
break;
case GIT_STREAM_TLS:
target = &stream_registry.tls_callbacks;
break;
default:
assert(0);
return -1;
}
if (git_rwlock_rdlock(&stream_registry.lock) < 0) {
git_error_set(GIT_ERROR_OS, "failed to lock stream registry");
return -1;
}
if (target->init) {
stream_registration_cpy(out, target);
error = 0;
}
git_rwlock_rdunlock(&stream_registry.lock);
return error;
}
int git_stream_register(git_stream_t type, git_stream_registration *registration)
{
assert(!registration || registration->init);
GIT_ERROR_CHECK_VERSION(registration, GIT_STREAM_VERSION, "stream_registration");
if (git_rwlock_wrlock(&stream_registry.lock) < 0) {
git_error_set(GIT_ERROR_OS, "failed to lock stream registry");
return -1;
}
if ((type & GIT_STREAM_STANDARD) == GIT_STREAM_STANDARD)
stream_registration_cpy(&stream_registry.callbacks, registration);
if ((type & GIT_STREAM_TLS) == GIT_STREAM_TLS)
stream_registration_cpy(&stream_registry.tls_callbacks, registration);
git_rwlock_wrunlock(&stream_registry.lock);
return 0;
}
int git_stream_register_tls(
int GIT_CALLBACK(ctor)(git_stream **out, const char *host, const char *port))
{
git_stream_registration registration = {0};
if (ctor) {
registration.version = GIT_STREAM_VERSION;
registration.init = ctor;
registration.wrap = NULL;
return git_stream_register(GIT_STREAM_TLS, ®istration);
} else {
return git_stream_register(GIT_STREAM_TLS, NULL);
}
}
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