Adding upstream version 5:7.2.4.upstream/5%7.2.4

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 270 insertions, 0 deletions

diff --git a/tests/modules/auth.c b/tests/modules/auth.c
new file mode 100644
index 0000000..19be95a
--- /dev/null
+++ b/tests/modules/auth.c
@@ -0,0 +1,270 @@
+/* define macros for having usleep */
+#define _BSD_SOURCE
+#define _DEFAULT_SOURCE
+
+#include "redismodule.h"
+
+#include <string.h>
+#include <unistd.h>
+#include <pthread.h>
+
+#define UNUSED(V) ((void) V)
+
+// A simple global user
+static RedisModuleUser *global = NULL;
+static long long client_change_delta = 0;
+
+void UserChangedCallback(uint64_t client_id, void *privdata) {
+    REDISMODULE_NOT_USED(privdata);
+    REDISMODULE_NOT_USED(client_id);
+    client_change_delta++;
+}
+
+int Auth_CreateModuleUser(RedisModuleCtx *ctx, RedisModuleString **argv, int argc) {
+    REDISMODULE_NOT_USED(argv);
+    REDISMODULE_NOT_USED(argc);
+
+    if (global) {
+        RedisModule_FreeModuleUser(global);
+    }
+
+    global = RedisModule_CreateModuleUser("global");
+    RedisModule_SetModuleUserACL(global, "allcommands");
+    RedisModule_SetModuleUserACL(global, "allkeys");
+    RedisModule_SetModuleUserACL(global, "on");
+
+    return RedisModule_ReplyWithSimpleString(ctx, "OK");
+}
+
+int Auth_AuthModuleUser(RedisModuleCtx *ctx, RedisModuleString **argv, int argc) {
+    REDISMODULE_NOT_USED(argv);
+    REDISMODULE_NOT_USED(argc);
+    uint64_t client_id;
+    RedisModule_AuthenticateClientWithUser(ctx, global, UserChangedCallback, NULL, &client_id);
+
+    return RedisModule_ReplyWithLongLong(ctx, (uint64_t) client_id);
+}
+
+int Auth_AuthRealUser(RedisModuleCtx *ctx, RedisModuleString **argv, int argc) {
+    if (argc != 2) return RedisModule_WrongArity(ctx);
+
+    size_t length;
+    uint64_t client_id;
+
+    RedisModuleString *user_string = argv[1];
+    const char *name = RedisModule_StringPtrLen(user_string, &length);
+
+    if (RedisModule_AuthenticateClientWithACLUser(ctx, name, length, 
+            UserChangedCallback, NULL, &client_id) == REDISMODULE_ERR) {
+        return RedisModule_ReplyWithError(ctx, "Invalid user");   
+    }
+
+    return RedisModule_ReplyWithLongLong(ctx, (uint64_t) client_id);
+}
+
+/* This command redacts every other arguments and returns OK */
+int Auth_RedactedAPI(RedisModuleCtx *ctx, RedisModuleString **argv, int argc) {
+    REDISMODULE_NOT_USED(argv);
+    for(int i = argc - 1; i > 0; i -= 2) {
+        int result = RedisModule_RedactClientCommandArgument(ctx, i);
+        RedisModule_Assert(result == REDISMODULE_OK);
+    }
+    return RedisModule_ReplyWithSimpleString(ctx, "OK"); 
+}
+
+int Auth_ChangeCount(RedisModuleCtx *ctx, RedisModuleString **argv, int argc) {
+    REDISMODULE_NOT_USED(argv);
+    REDISMODULE_NOT_USED(argc);
+    long long result = client_change_delta;
+    client_change_delta = 0;
+    return RedisModule_ReplyWithLongLong(ctx, result);
+}
+
+/* The Module functionality below validates that module authentication callbacks can be registered
+ * to support both non-blocking and blocking module based authentication. */
+
+/* Non Blocking Module Auth callback / implementation. */
+int auth_cb(RedisModuleCtx *ctx, RedisModuleString *username, RedisModuleString *password, RedisModuleString **err) {
+    const char *user = RedisModule_StringPtrLen(username, NULL);
+    const char *pwd = RedisModule_StringPtrLen(password, NULL);
+    if (!strcmp(user,"foo") && !strcmp(pwd,"allow")) {
+        RedisModule_AuthenticateClientWithACLUser(ctx, "foo", 3, NULL, NULL, NULL);
+        return REDISMODULE_AUTH_HANDLED;
+    }
+    else if (!strcmp(user,"foo") && !strcmp(pwd,"deny")) {
+        RedisModuleString *log = RedisModule_CreateString(ctx, "Module Auth", 11);
+        RedisModule_ACLAddLogEntryByUserName(ctx, username, log, REDISMODULE_ACL_LOG_AUTH);
+        RedisModule_FreeString(ctx, log);
+        const char *err_msg = "Auth denied by Misc Module.";
+        *err = RedisModule_CreateString(ctx, err_msg, strlen(err_msg));
+        return REDISMODULE_AUTH_HANDLED;
+    }
+    return REDISMODULE_AUTH_NOT_HANDLED;
+}
+
+int test_rm_register_auth_cb(RedisModuleCtx *ctx, RedisModuleString **argv, int argc) {
+    REDISMODULE_NOT_USED(argv);
+    REDISMODULE_NOT_USED(argc);
+    RedisModule_RegisterAuthCallback(ctx, auth_cb);
+    RedisModule_ReplyWithSimpleString(ctx, "OK");
+    return REDISMODULE_OK;
+}
+
+/*
+ * The thread entry point that actually executes the blocking part of the AUTH command.
+ * This function sleeps for 0.5 seconds and then unblocks the client which will later call
+ * `AuthBlock_Reply`.
+ * `arg` is expected to contain the RedisModuleBlockedClient, username, and password.
+ */
+void *AuthBlock_ThreadMain(void *arg) {
+    usleep(500000);
+    void **targ = arg;
+    RedisModuleBlockedClient *bc = targ[0];
+    int result = 2;
+    const char *user = RedisModule_StringPtrLen(targ[1], NULL);
+    const char *pwd = RedisModule_StringPtrLen(targ[2], NULL);
+    if (!strcmp(user,"foo") && !strcmp(pwd,"block_allow")) {
+        result = 1;
+    }
+    else if (!strcmp(user,"foo") && !strcmp(pwd,"block_deny")) {
+        result = 0;
+    }
+    else if (!strcmp(user,"foo") && !strcmp(pwd,"block_abort")) {
+        RedisModule_BlockedClientMeasureTimeEnd(bc);
+        RedisModule_AbortBlock(bc);
+        goto cleanup;
+    }
+    /* Provide the result to the blocking reply cb. */
+    void **replyarg = RedisModule_Alloc(sizeof(void*));
+    replyarg[0] = (void *) (uintptr_t) result;
+    RedisModule_BlockedClientMeasureTimeEnd(bc);
+    RedisModule_UnblockClient(bc, replyarg);
+cleanup:
+    /* Free the username and password and thread / arg data. */
+    RedisModule_FreeString(NULL, targ[1]);
+    RedisModule_FreeString(NULL, targ[2]);
+    RedisModule_Free(targ);
+    return NULL;
+}
+
+/*
+ * Reply callback for a blocking AUTH command. This is called when the client is unblocked.
+ */
+int AuthBlock_Reply(RedisModuleCtx *ctx, RedisModuleString *username, RedisModuleString *password, RedisModuleString **err) {
+    REDISMODULE_NOT_USED(password);
+    void **targ = RedisModule_GetBlockedClientPrivateData(ctx);
+    int result = (uintptr_t) targ[0];
+    size_t userlen = 0;
+    const char *user = RedisModule_StringPtrLen(username, &userlen);
+    /* Handle the success case by authenticating. */
+    if (result == 1) {
+        RedisModule_AuthenticateClientWithACLUser(ctx, user, userlen, NULL, NULL, NULL);
+        return REDISMODULE_AUTH_HANDLED;
+    }
+    /* Handle the Error case by denying auth */
+    else if (result == 0) {
+        RedisModuleString *log = RedisModule_CreateString(ctx, "Module Auth", 11);
+        RedisModule_ACLAddLogEntryByUserName(ctx, username, log, REDISMODULE_ACL_LOG_AUTH);
+        RedisModule_FreeString(ctx, log);
+        const char *err_msg = "Auth denied by Misc Module.";
+        *err = RedisModule_CreateString(ctx, err_msg, strlen(err_msg));
+        return REDISMODULE_AUTH_HANDLED;
+    }
+    /* "Skip" Authentication */
+    return REDISMODULE_AUTH_NOT_HANDLED;
+}
+
+/* Private data freeing callback for Module Auth. */
+void AuthBlock_FreeData(RedisModuleCtx *ctx, void *privdata) {
+    REDISMODULE_NOT_USED(ctx);
+    RedisModule_Free(privdata);
+}
+
+/* Callback triggered when the engine attempts module auth
+ * Return code here is one of the following: Auth succeeded, Auth denied,
+ * Auth not handled, Auth blocked.
+ * The Module can have auth succeed / denied here itself, but this is an example
+ * of blocking module auth.
+ */
+int blocking_auth_cb(RedisModuleCtx *ctx, RedisModuleString *username, RedisModuleString *password, RedisModuleString **err) {
+    REDISMODULE_NOT_USED(username);
+    REDISMODULE_NOT_USED(password);
+    REDISMODULE_NOT_USED(err);
+    /* Block the client from the Module. */
+    RedisModuleBlockedClient *bc = RedisModule_BlockClientOnAuth(ctx, AuthBlock_Reply, AuthBlock_FreeData);
+    int ctx_flags = RedisModule_GetContextFlags(ctx);
+    if (ctx_flags & REDISMODULE_CTX_FLAGS_MULTI || ctx_flags & REDISMODULE_CTX_FLAGS_LUA) {
+        /* Clean up by using RedisModule_UnblockClient since we attempted blocking the client. */
+        RedisModule_UnblockClient(bc, NULL);
+        return REDISMODULE_AUTH_HANDLED;
+    }
+    RedisModule_BlockedClientMeasureTimeStart(bc);
+    pthread_t tid;
+    /* Allocate memory for information needed. */
+    void **targ = RedisModule_Alloc(sizeof(void*)*3);
+    targ[0] = bc;
+    targ[1] = RedisModule_CreateStringFromString(NULL, username);
+    targ[2] = RedisModule_CreateStringFromString(NULL, password);
+    /* Create bg thread and pass the blockedclient, username and password to it. */
+    if (pthread_create(&tid, NULL, AuthBlock_ThreadMain, targ) != 0) {
+        RedisModule_AbortBlock(bc);
+    }
+    return REDISMODULE_AUTH_HANDLED;
+}
+
+int test_rm_register_blocking_auth_cb(RedisModuleCtx *ctx, RedisModuleString **argv, int argc) {
+    REDISMODULE_NOT_USED(argv);
+    REDISMODULE_NOT_USED(argc);
+    RedisModule_RegisterAuthCallback(ctx, blocking_auth_cb);
+    RedisModule_ReplyWithSimpleString(ctx, "OK");
+    return REDISMODULE_OK;
+}
+
+/* This function must be present on each Redis module. It is used in order to
+ * register the commands into the Redis server. */
+int RedisModule_OnLoad(RedisModuleCtx *ctx, RedisModuleString **argv, int argc) {
+    REDISMODULE_NOT_USED(argv);
+    REDISMODULE_NOT_USED(argc);
+
+    if (RedisModule_Init(ctx,"testacl",1,REDISMODULE_APIVER_1)
+        == REDISMODULE_ERR) return REDISMODULE_ERR;
+
+    if (RedisModule_CreateCommand(ctx,"auth.authrealuser",
+        Auth_AuthRealUser,"no-auth",0,0,0) == REDISMODULE_ERR)
+        return REDISMODULE_ERR;
+
+    if (RedisModule_CreateCommand(ctx,"auth.createmoduleuser",
+        Auth_CreateModuleUser,"",0,0,0) == REDISMODULE_ERR)
+        return REDISMODULE_ERR;
+
+    if (RedisModule_CreateCommand(ctx,"auth.authmoduleuser",
+        Auth_AuthModuleUser,"no-auth",0,0,0) == REDISMODULE_ERR)
+        return REDISMODULE_ERR;
+
+    if (RedisModule_CreateCommand(ctx,"auth.changecount",
+        Auth_ChangeCount,"",0,0,0) == REDISMODULE_ERR)
+        return REDISMODULE_ERR;
+
+    if (RedisModule_CreateCommand(ctx,"auth.redact",
+        Auth_RedactedAPI,"",0,0,0) == REDISMODULE_ERR)
+        return REDISMODULE_ERR;
+
+    if (RedisModule_CreateCommand(ctx,"testmoduleone.rm_register_auth_cb",
+        test_rm_register_auth_cb,"",0,0,0) == REDISMODULE_ERR)
+        return REDISMODULE_ERR;
+
+    if (RedisModule_CreateCommand(ctx,"testmoduleone.rm_register_blocking_auth_cb",
+        test_rm_register_blocking_auth_cb,"",0,0,0) == REDISMODULE_ERR)
+        return REDISMODULE_ERR;
+
+    return REDISMODULE_OK;
+}
+
+int RedisModule_OnUnload(RedisModuleCtx *ctx) {
+    UNUSED(ctx);
+
+    if (global)
+        RedisModule_FreeModuleUser(global);
+
+    return REDISMODULE_OK;
+}