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// SPDX-FileCopyrightText: 2024 Redict Contributors
// SPDX-FileCopyrightText: 2024 Salvatore Sanfilippo <antirez at gmail dot com>
//
// SPDX-License-Identifier: BSD-3-Clause
// SPDX-License-Identifier: LGPL-3.0-only
#include "redictmodule.h"
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <memory.h>
#include <errno.h>
/* Sanity tests to verify inputs and return values. */
int sanity(RedictModuleCtx *ctx, RedictModuleString **argv, int argc) {
REDICTMODULE_NOT_USED(argv);
REDICTMODULE_NOT_USED(argc);
RedictModuleRdbStream *s = RedictModule_RdbStreamCreateFromFile("dbnew.rdb");
/* NULL stream should fail. */
if (RedictModule_RdbLoad(ctx, NULL, 0) == REDICTMODULE_OK || errno != EINVAL) {
RedictModule_ReplyWithError(ctx, strerror(errno));
goto out;
}
/* Invalid flags should fail. */
if (RedictModule_RdbLoad(ctx, s, 188) == REDICTMODULE_OK || errno != EINVAL) {
RedictModule_ReplyWithError(ctx, strerror(errno));
goto out;
}
/* Missing file should fail. */
if (RedictModule_RdbLoad(ctx, s, 0) == REDICTMODULE_OK || errno != ENOENT) {
RedictModule_ReplyWithError(ctx, strerror(errno));
goto out;
}
/* Save RDB file. */
if (RedictModule_RdbSave(ctx, s, 0) != REDICTMODULE_OK || errno != 0) {
RedictModule_ReplyWithError(ctx, strerror(errno));
goto out;
}
/* Load the saved RDB file. */
if (RedictModule_RdbLoad(ctx, s, 0) != REDICTMODULE_OK || errno != 0) {
RedictModule_ReplyWithError(ctx, strerror(errno));
goto out;
}
RedictModule_ReplyWithSimpleString(ctx, "OK");
out:
RedictModule_RdbStreamFree(s);
return REDICTMODULE_OK;
}
int cmd_rdbsave(RedictModuleCtx *ctx, RedictModuleString **argv, int argc) {
if (argc != 2) {
RedictModule_WrongArity(ctx);
return REDICTMODULE_OK;
}
size_t len;
const char *filename = RedictModule_StringPtrLen(argv[1], &len);
char tmp[len + 1];
memcpy(tmp, filename, len);
tmp[len] = '\0';
RedictModuleRdbStream *stream = RedictModule_RdbStreamCreateFromFile(tmp);
if (RedictModule_RdbSave(ctx, stream, 0) != REDICTMODULE_OK || errno != 0) {
RedictModule_ReplyWithError(ctx, strerror(errno));
goto out;
}
RedictModule_ReplyWithSimpleString(ctx, "OK");
out:
RedictModule_RdbStreamFree(stream);
return REDICTMODULE_OK;
}
/* Fork before calling RM_RdbSave(). */
int cmd_rdbsave_fork(RedictModuleCtx *ctx, RedictModuleString **argv, int argc) {
if (argc != 2) {
RedictModule_WrongArity(ctx);
return REDICTMODULE_OK;
}
size_t len;
const char *filename = RedictModule_StringPtrLen(argv[1], &len);
char tmp[len + 1];
memcpy(tmp, filename, len);
tmp[len] = '\0';
int fork_child_pid = RedictModule_Fork(NULL, NULL);
if (fork_child_pid < 0) {
RedictModule_ReplyWithError(ctx, strerror(errno));
return REDICTMODULE_OK;
} else if (fork_child_pid > 0) {
/* parent */
RedictModule_ReplyWithSimpleString(ctx, "OK");
return REDICTMODULE_OK;
}
RedictModuleRdbStream *stream = RedictModule_RdbStreamCreateFromFile(tmp);
int ret = 0;
if (RedictModule_RdbSave(ctx, stream, 0) != REDICTMODULE_OK) {
ret = errno;
}
RedictModule_RdbStreamFree(stream);
RedictModule_ExitFromChild(ret);
return REDICTMODULE_OK;
}
int cmd_rdbload(RedictModuleCtx *ctx, RedictModuleString **argv, int argc) {
if (argc != 2) {
RedictModule_WrongArity(ctx);
return REDICTMODULE_OK;
}
size_t len;
const char *filename = RedictModule_StringPtrLen(argv[1], &len);
char tmp[len + 1];
memcpy(tmp, filename, len);
tmp[len] = '\0';
RedictModuleRdbStream *stream = RedictModule_RdbStreamCreateFromFile(tmp);
if (RedictModule_RdbLoad(ctx, stream, 0) != REDICTMODULE_OK || errno != 0) {
RedictModule_RdbStreamFree(stream);
RedictModule_ReplyWithError(ctx, strerror(errno));
return REDICTMODULE_OK;
}
RedictModule_RdbStreamFree(stream);
RedictModule_ReplyWithSimpleString(ctx, "OK");
return REDICTMODULE_OK;
}
int RedictModule_OnLoad(RedictModuleCtx *ctx, RedictModuleString **argv, int argc) {
REDICTMODULE_NOT_USED(argv);
REDICTMODULE_NOT_USED(argc);
if (RedictModule_Init(ctx, "rdbloadsave", 1, REDICTMODULE_APIVER_1) == REDICTMODULE_ERR)
return REDICTMODULE_ERR;
if (RedictModule_CreateCommand(ctx, "test.sanity", sanity, "", 0, 0, 0) == REDICTMODULE_ERR)
return REDICTMODULE_ERR;
if (RedictModule_CreateCommand(ctx, "test.rdbsave", cmd_rdbsave, "", 0, 0, 0) == REDICTMODULE_ERR)
return REDICTMODULE_ERR;
if (RedictModule_CreateCommand(ctx, "test.rdbsave_fork", cmd_rdbsave_fork, "", 0, 0, 0) == REDICTMODULE_ERR)
return REDICTMODULE_ERR;
if (RedictModule_CreateCommand(ctx, "test.rdbload", cmd_rdbload, "", 0, 0, 0) == REDICTMODULE_ERR)
return REDICTMODULE_ERR;
return REDICTMODULE_OK;
}
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