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Current File : /opt/cloudlinux/alt-php82/root/usr/include/php/ext/swoole/thirdparty/hiredis/hiredis.h
/*
 * Copyright (c) 2009-2011, Salvatore Sanfilippo <antirez at gmail dot com>
 * Copyright (c) 2010-2014, Pieter Noordhuis <pcnoordhuis at gmail dot com>
 * Copyright (c) 2015, Matt Stancliff <matt at genges dot com>,
 *                     Jan-Erik Rediger <janerik at fnordig dot com>
 *
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *   * Redistributions of source code must retain the above copyright notice,
 *     this list of conditions and the following disclaimer.
 *   * Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 *   * Neither the name of Redis nor the names of its contributors may be used
 *     to endorse or promote products derived from this software without
 *     specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef __HIREDIS_H
#define __HIREDIS_H
#include "read.h"
#include <stdarg.h> /* for va_list */
#ifndef _MSC_VER
#include <sys/time.h> /* for struct timeval */
#else
struct timeval; /* forward declaration */
typedef long long ssize_t;
#endif
#include <stdint.h> /* uintXX_t, etc */
#include "sds.h" /* for sds */
#include "alloc.h" /* for allocation wrappers */

#define HIREDIS_MAJOR 1
#define HIREDIS_MINOR 0
#define HIREDIS_PATCH 1
#define HIREDIS_SONAME 1.0.1-dev

/* Connection type can be blocking or non-blocking and is set in the
 * least significant bit of the flags field in redisContext. */
#define REDIS_BLOCK 0x1

/* Connection may be disconnected before being free'd. The second bit
 * in the flags field is set when the context is connected. */
#define REDIS_CONNECTED 0x2

/* The async API might try to disconnect cleanly and flush the output
 * buffer and read all subsequent replies before disconnecting.
 * This flag means no new commands can come in and the connection
 * should be terminated once all replies have been read. */
#define REDIS_DISCONNECTING 0x4

/* Flag specific to the async API which means that the context should be clean
 * up as soon as possible. */
#define REDIS_FREEING 0x8

/* Flag that is set when an async callback is executed. */
#define REDIS_IN_CALLBACK 0x10

/* Flag that is set when the async context has one or more subscriptions. */
#define REDIS_SUBSCRIBED 0x20

/* Flag that is set when monitor mode is active */
#define REDIS_MONITORING 0x40

/* Flag that is set when we should set SO_REUSEADDR before calling bind() */
#define REDIS_REUSEADDR 0x80

/**
 * Flag that indicates the user does not want the context to
 * be automatically freed upon error
 */
#define REDIS_NO_AUTO_FREE 0x200

#define REDIS_KEEPALIVE_INTERVAL 15 /* seconds */

/* number of times we retry to connect in the case of EADDRNOTAVAIL and
 * SO_REUSEADDR is being used. */
#define REDIS_CONNECT_RETRIES  10

/* Forward declarations for structs defined elsewhere */
struct redisAsyncContext;
struct redisContext;

/* RESP3 push helpers and callback prototypes */
#define redisIsPushReply(r) (((redisReply*)(r))->type == REDIS_REPLY_PUSH)
typedef void (redisPushFn)(void *, void *);
typedef void (redisAsyncPushFn)(struct redisAsyncContext *, void *);

#ifdef __cplusplus
extern "C" {
#endif

/* This is the reply object returned by redisCommand() */
typedef struct redisReply {
    int type; /* REDIS_REPLY_* */
    long long integer; /* The integer when type is REDIS_REPLY_INTEGER */
    double dval; /* The double when type is REDIS_REPLY_DOUBLE */
    size_t len; /* Length of string */
    char *str; /* Used for REDIS_REPLY_ERROR, REDIS_REPLY_STRING
                  REDIS_REPLY_VERB, REDIS_REPLY_DOUBLE (in additional to dval),
                  and REDIS_REPLY_BIGNUM. */
    char vtype[4]; /* Used for REDIS_REPLY_VERB, contains the null
                      terminated 3 character content type, such as "txt". */
    size_t elements; /* number of elements, for REDIS_REPLY_ARRAY */
    struct redisReply **element; /* elements vector for REDIS_REPLY_ARRAY */
} redisReply;

redisReader *redisReaderCreate(void);

/* Function to free the reply objects hiredis returns by default. */
void freeReplyObject(void *reply);

/* Functions to format a command according to the protocol. */
int redisvFormatCommand(char **target, const char *format, va_list ap);
int redisFormatCommand(char **target, const char *format, ...);
int redisFormatCommandArgv(char **target, int argc, const char **argv, const size_t *argvlen);
int redisFormatSdsCommandArgv(sds *target, int argc, const char ** argv, const size_t *argvlen);
void redisFreeCommand(char *cmd);
void redisFreeSdsCommand(sds cmd);

enum redisConnectionType {
    REDIS_CONN_TCP,
    REDIS_CONN_UNIX,
    REDIS_CONN_USERFD
};

struct redisSsl;

#define REDIS_OPT_NONBLOCK 0x01
#define REDIS_OPT_REUSEADDR 0x02

/**
 * Don't automatically free the async object on a connection failure,
 * or other implicit conditions. Only free on an explicit call to disconnect() or free()
 */
#define REDIS_OPT_NOAUTOFREE 0x04

/* Don't automatically intercept and free RESP3 PUSH replies. */
#define REDIS_OPT_NO_PUSH_AUTOFREE 0x08

/* In Unix systems a file descriptor is a regular signed int, with -1
 * representing an invalid descriptor. In Windows it is a SOCKET
 * (32- or 64-bit unsigned integer depending on the architecture), where
 * all bits set (~0) is INVALID_SOCKET.  */
#ifndef _WIN32
typedef int redisFD;
#define REDIS_INVALID_FD -1
#else
#ifdef _WIN64
typedef unsigned long long redisFD; /* SOCKET = 64-bit UINT_PTR */
#else
typedef unsigned long redisFD;      /* SOCKET = 32-bit UINT_PTR */
#endif
#define REDIS_INVALID_FD ((redisFD)(~0)) /* INVALID_SOCKET */
#endif

typedef struct {
    /*
     * the type of connection to use. This also indicates which
     * `endpoint` member field to use
     */
    int type;
    /* bit field of REDIS_OPT_xxx */
    int options;
    /* timeout value for connect operation. If NULL, no timeout is used */
    const struct timeval *connect_timeout;
    /* timeout value for commands. If NULL, no timeout is used.  This can be
     * updated at runtime with redisSetTimeout/redisAsyncSetTimeout. */
    const struct timeval *command_timeout;
    union {
        /** use this field for tcp/ip connections */
        struct {
            const char *source_addr;
            const char *ip;
            int port;
        } tcp;
        /** use this field for unix domain sockets */
        const char *unix_socket;
        /**
         * use this field to have hiredis operate an already-open
         * file descriptor */
        redisFD fd;
    } endpoint;

    /* Optional user defined data/destructor */
    void *privdata;
    void (*free_privdata)(void *);

    /* A user defined PUSH message callback */
    redisPushFn *push_cb;
    redisAsyncPushFn *async_push_cb;
} redisOptions;

/**
 * Helper macros to initialize options to their specified fields.
 */
#define REDIS_OPTIONS_SET_TCP(opts, ip_, port_) \
    (opts)->type = REDIS_CONN_TCP; \
    (opts)->endpoint.tcp.ip = ip_; \
    (opts)->endpoint.tcp.port = port_;

#define REDIS_OPTIONS_SET_UNIX(opts, path) \
    (opts)->type = REDIS_CONN_UNIX;        \
    (opts)->endpoint.unix_socket = path;

#define REDIS_OPTIONS_SET_PRIVDATA(opts, data, dtor) \
    (opts)->privdata = data;                         \
    (opts)->free_privdata = dtor;                    \

typedef struct redisContextFuncs {
    void (*free_privctx)(void *);
    ssize_t (*read_)(struct redisContext *, char *, size_t);
    ssize_t (*write_)(struct redisContext *);
} redisContextFuncs;

/* Context for a connection to Redis */
typedef struct redisContext {
    const redisContextFuncs *funcs;   /* Function table */

    int err; /* Error flags, 0 when there is no error */
    char errstr[128]; /* String representation of error when applicable */
    redisFD fd;
    int flags;
    char *obuf; /* Write buffer */
    redisReader *reader; /* Protocol reader */

    enum redisConnectionType connection_type;
    struct timeval *connect_timeout;
    struct timeval *command_timeout;

    struct {
        char *host;
        char *source_addr;
        int port;
    } tcp;

    struct {
        char *path;
    } unix_sock;

    /* For non-blocking connect */
    struct sockaddr *saddr;
    size_t addrlen;

    /* Optional data and corresponding destructor users can use to provide
     * context to a given redisContext.  Not used by hiredis. */
    void *privdata;
    void (*free_privdata)(void *);

    /* Internal context pointer presently used by hiredis to manage
     * SSL connections. */
    void *privctx;

    /* An optional RESP3 PUSH handler */
    redisPushFn *push_cb;
} redisContext;

redisContext *redisConnectWithOptions(const redisOptions *options);
redisContext *redisConnect(const char *ip, int port);
redisContext *redisConnectWithTimeout(const char *ip, int port, const struct timeval tv);
redisContext *redisConnectNonBlock(const char *ip, int port);
redisContext *redisConnectBindNonBlock(const char *ip, int port,
                                       const char *source_addr);
redisContext *redisConnectBindNonBlockWithReuse(const char *ip, int port,
                                                const char *source_addr);
redisContext *redisConnectUnix(const char *path);
redisContext *redisConnectUnixWithTimeout(const char *path, const struct timeval tv);
redisContext *redisConnectUnixNonBlock(const char *path);
redisContext *redisConnectFd(redisFD fd);

/**
 * Reconnect the given context using the saved information.
 *
 * This re-uses the exact same connect options as in the initial connection.
 * host, ip (or path), timeout and bind address are reused,
 * flags are used unmodified from the existing context.
 *
 * Returns REDIS_OK on successful connect or REDIS_ERR otherwise.
 */
int redisReconnect(redisContext *c);

redisPushFn *redisSetPushCallback(redisContext *c, redisPushFn *fn);
int redisSetTimeout(redisContext *c, const struct timeval tv);
int redisEnableKeepAlive(redisContext *c);
void redisFree(redisContext *c);
redisFD redisFreeKeepFd(redisContext *c);
int redisBufferRead(redisContext *c);
int redisBufferWrite(redisContext *c, int *done);

/* In a blocking context, this function first checks if there are unconsumed
 * replies to return and returns one if so. Otherwise, it flushes the output
 * buffer to the socket and reads until it has a reply. In a non-blocking
 * context, it will return unconsumed replies until there are no more. */
int redisGetReply(redisContext *c, void **reply);
int redisGetReplyFromReader(redisContext *c, void **reply);

/* Write a formatted command to the output buffer. Use these functions in blocking mode
 * to get a pipeline of commands. */
int redisAppendFormattedCommand(redisContext *c, const char *cmd, size_t len);

/* Write a command to the output buffer. Use these functions in blocking mode
 * to get a pipeline of commands. */
int redisvAppendCommand(redisContext *c, const char *format, va_list ap);
int redisAppendCommand(redisContext *c, const char *format, ...);
int redisAppendCommandArgv(redisContext *c, int argc, const char **argv, const size_t *argvlen);

/* Issue a command to Redis. In a blocking context, it is identical to calling
 * redisAppendCommand, followed by redisGetReply. The function will return
 * NULL if there was an error in performing the request, otherwise it will
 * return the reply. In a non-blocking context, it is identical to calling
 * only redisAppendCommand and will always return NULL. */
void *redisvCommand(redisContext *c, const char *format, va_list ap);
void *redisCommand(redisContext *c, const char *format, ...);
void *redisCommandArgv(redisContext *c, int argc, const char **argv, const size_t *argvlen);

#ifdef __cplusplus
}
#endif

#endif

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