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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 <strings.h>
#include <sys/mman.h>
#define UNUSED(V) ((void) V)
void assertCrash(RedictModuleInfoCtx *ctx, int for_crash_report) {
UNUSED(ctx);
UNUSED(for_crash_report);
RedictModule_Assert(0);
}
void segfaultCrash(RedictModuleInfoCtx *ctx, int for_crash_report) {
UNUSED(ctx);
UNUSED(for_crash_report);
/* Compiler gives warnings about writing to a random address
* e.g "*((char*)-1) = 'x';". As a workaround, we map a read-only area
* and try to write there to trigger segmentation fault. */
char *p = mmap(NULL, 4096, PROT_READ, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
*p = 'x';
}
int RedictModule_OnLoad(RedictModuleCtx *ctx, RedictModuleString **argv, int argc) {
REDICTMODULE_NOT_USED(argv);
REDICTMODULE_NOT_USED(argc);
if (RedictModule_Init(ctx,"infocrash",1,REDICTMODULE_APIVER_1)
== REDICTMODULE_ERR) return REDICTMODULE_ERR;
RedictModule_Assert(argc == 1);
if (!strcasecmp(RedictModule_StringPtrLen(argv[0], NULL), "segfault")) {
if (RedictModule_RegisterInfoFunc(ctx, segfaultCrash) == REDICTMODULE_ERR) return REDICTMODULE_ERR;
} else if(!strcasecmp(RedictModule_StringPtrLen(argv[0], NULL), "assert")) {
if (RedictModule_RegisterInfoFunc(ctx, assertCrash) == REDICTMODULE_ERR) return REDICTMODULE_ERR;
} else {
return REDICTMODULE_ERR;
}
return REDICTMODULE_OK;
}
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