349 lines
9.5 KiB
C
349 lines
9.5 KiB
C
/* Redis CLI (command line interface)
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*
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* Copyright (c) 2006-2009, Salvatore Sanfilippo <antirez at gmail dot com>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of Redis nor the names of its contributors may be used
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* to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "fmacros.h"
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include "anet.h"
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#include "sds.h"
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#include "adlist.h"
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#include "zmalloc.h"
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#define REDIS_CMD_INLINE 1
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#define REDIS_CMD_BULK 2
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#define REDIS_NOTUSED(V) ((void) V)
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static struct config {
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char *hostip;
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int hostport;
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} config;
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struct redisCommand {
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char *name;
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int arity;
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int flags;
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};
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static struct redisCommand cmdTable[] = {
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{"get",2,REDIS_CMD_INLINE},
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{"set",3,REDIS_CMD_BULK},
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{"setnx",3,REDIS_CMD_BULK},
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{"del",2,REDIS_CMD_INLINE},
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{"exists",2,REDIS_CMD_INLINE},
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{"incr",2,REDIS_CMD_INLINE},
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{"decr",2,REDIS_CMD_INLINE},
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{"rpush",3,REDIS_CMD_BULK},
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{"lpush",3,REDIS_CMD_BULK},
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{"rpop",2,REDIS_CMD_INLINE},
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{"lpop",2,REDIS_CMD_INLINE},
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{"llen",2,REDIS_CMD_INLINE},
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{"lindex",3,REDIS_CMD_INLINE},
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{"lset",4,REDIS_CMD_BULK},
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{"lrange",4,REDIS_CMD_INLINE},
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{"ltrim",4,REDIS_CMD_INLINE},
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{"lrem",4,REDIS_CMD_BULK},
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{"sadd",3,REDIS_CMD_BULK},
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{"srem",3,REDIS_CMD_BULK},
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{"sismember",3,REDIS_CMD_BULK},
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{"scard",2,REDIS_CMD_INLINE},
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{"sinter",-2,REDIS_CMD_INLINE},
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{"sinterstore",-3,REDIS_CMD_INLINE},
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{"sunion",-2,REDIS_CMD_INLINE},
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{"sunionstore",-3,REDIS_CMD_INLINE},
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{"smembers",2,REDIS_CMD_INLINE},
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{"incrby",3,REDIS_CMD_INLINE},
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{"decrby",3,REDIS_CMD_INLINE},
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{"getset",3,REDIS_CMD_BULK},
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{"randomkey",1,REDIS_CMD_INLINE},
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{"select",2,REDIS_CMD_INLINE},
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{"move",3,REDIS_CMD_INLINE},
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{"rename",3,REDIS_CMD_INLINE},
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{"renamenx",3,REDIS_CMD_INLINE},
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{"keys",2,REDIS_CMD_INLINE},
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{"dbsize",1,REDIS_CMD_INLINE},
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{"ping",1,REDIS_CMD_INLINE},
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{"echo",2,REDIS_CMD_BULK},
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{"save",1,REDIS_CMD_INLINE},
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{"bgsave",1,REDIS_CMD_INLINE},
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{"shutdown",1,REDIS_CMD_INLINE},
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{"lastsave",1,REDIS_CMD_INLINE},
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{"type",2,REDIS_CMD_INLINE},
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{"flushdb",1,REDIS_CMD_INLINE},
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{"flushall",1,REDIS_CMD_INLINE},
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{"sort",-2,REDIS_CMD_INLINE},
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{"info",1,REDIS_CMD_INLINE},
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{"mget",-2,REDIS_CMD_INLINE},
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{"expire",3,REDIS_CMD_INLINE},
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{NULL,0,0}
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};
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static int cliReadReply(int fd);
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static struct redisCommand *lookupCommand(char *name) {
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int j = 0;
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while(cmdTable[j].name != NULL) {
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if (!strcasecmp(name,cmdTable[j].name)) return &cmdTable[j];
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j++;
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}
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return NULL;
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}
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static int cliConnect(void) {
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char err[ANET_ERR_LEN];
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int fd;
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fd = anetTcpConnect(err,config.hostip,config.hostport);
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if (fd == ANET_ERR) {
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fprintf(stderr,"Connect: %s\n",err);
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return -1;
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}
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anetTcpNoDelay(NULL,fd);
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return fd;
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}
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static sds cliReadLine(int fd) {
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sds line = sdsempty();
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while(1) {
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char c;
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ssize_t ret;
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ret = read(fd,&c,1);
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if (ret == -1) {
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sdsfree(line);
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return NULL;
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} else if ((ret == 0) || (c == '\n')) {
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break;
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} else {
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line = sdscatlen(line,&c,1);
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}
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}
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return sdstrim(line,"\r\n");
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}
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static int cliReadSingleLineReply(int fd) {
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sds reply = cliReadLine(fd);
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if (reply == NULL) return 1;
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printf("%s\n", reply);
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return 0;
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}
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static int cliReadBulkReply(int fd) {
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sds replylen = cliReadLine(fd);
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char *reply, crlf[2];
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int bulklen;
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if (replylen == NULL) return 1;
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bulklen = atoi(replylen);
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if (bulklen == -1) {
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sdsfree(replylen);
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printf("(nil)");
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return 0;
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}
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reply = zmalloc(bulklen);
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anetRead(fd,reply,bulklen);
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anetRead(fd,crlf,2);
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if (bulklen && fwrite(reply,bulklen,1,stdout) == 0) {
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zfree(reply);
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return 1;
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}
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if (isatty(fileno(stdout)) && reply[bulklen-1] != '\n')
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printf("\n");
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zfree(reply);
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return 0;
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}
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static int cliReadMultiBulkReply(int fd) {
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sds replylen = cliReadLine(fd);
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int elements, c = 1;
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if (replylen == NULL) return 1;
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elements = atoi(replylen);
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if (elements == -1) {
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sdsfree(replylen);
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printf("(nil)\n");
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return 0;
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}
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if (elements == 0) {
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printf("(empty list or set)\n");
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}
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while(elements--) {
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printf("%d. ", c);
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if (cliReadReply(fd)) return 1;
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c++;
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}
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return 0;
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}
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static int cliReadReply(int fd) {
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char type;
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if (anetRead(fd,&type,1) <= 0) exit(1);
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switch(type) {
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case '-':
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printf("(error) ");
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cliReadSingleLineReply(fd);
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return 1;
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case '+':
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case ':':
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return cliReadSingleLineReply(fd);
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case '$':
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return cliReadBulkReply(fd);
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case '*':
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return cliReadMultiBulkReply(fd);
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default:
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printf("protocol error, got '%c' as reply type byte\n", type);
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return 1;
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}
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}
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static int cliSendCommand(int argc, char **argv) {
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struct redisCommand *rc = lookupCommand(argv[0]);
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int fd, j, retval = 0;
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sds cmd = sdsempty();
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if (!rc) {
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fprintf(stderr,"Unknown command '%s'\n",argv[0]);
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return 1;
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}
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if ((rc->arity > 0 && argc != rc->arity) ||
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(rc->arity < 0 && argc < -rc->arity)) {
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fprintf(stderr,"Wrong number of arguments for '%s'\n",rc->name);
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return 1;
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}
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if ((fd = cliConnect()) == -1) return 1;
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/* Build the command to send */
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for (j = 0; j < argc; j++) {
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if (j != 0) cmd = sdscat(cmd," ");
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if (j == argc-1 && rc->flags & REDIS_CMD_BULK) {
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cmd = sdscatprintf(cmd,"%d",sdslen(argv[j]));
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} else {
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cmd = sdscatlen(cmd,argv[j],sdslen(argv[j]));
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}
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}
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cmd = sdscat(cmd,"\r\n");
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if (rc->flags & REDIS_CMD_BULK) {
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cmd = sdscatlen(cmd,argv[argc-1],sdslen(argv[argc-1]));
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cmd = sdscat(cmd,"\r\n");
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}
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anetWrite(fd,cmd,sdslen(cmd));
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retval = cliReadReply(fd);
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if (retval) {
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close(fd);
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return retval;
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}
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close(fd);
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return 0;
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}
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static int parseOptions(int argc, char **argv) {
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int i;
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for (i = 1; i < argc; i++) {
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int lastarg = i==argc-1;
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if (!strcmp(argv[i],"-h") && !lastarg) {
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char *ip = zmalloc(32);
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if (anetResolve(NULL,argv[i+1],ip) == ANET_ERR) {
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printf("Can't resolve %s\n", argv[i]);
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exit(1);
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}
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config.hostip = ip;
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i++;
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} else if (!strcmp(argv[i],"-p") && !lastarg) {
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config.hostport = atoi(argv[i+1]);
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i++;
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} else {
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break;
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}
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}
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return i;
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}
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static sds readArgFromStdin(void) {
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char buf[1024];
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sds arg = sdsempty();
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while(1) {
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int nread = read(fileno(stdin),buf,1024);
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if (nread == 0) break;
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else if (nread == -1) {
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perror("Reading from standard input");
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exit(1);
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}
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arg = sdscatlen(arg,buf,nread);
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}
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return arg;
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}
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int main(int argc, char **argv) {
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int firstarg, j;
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char **argvcopy;
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config.hostip = "127.0.0.1";
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config.hostport = 6379;
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firstarg = parseOptions(argc,argv);
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argc -= firstarg;
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argv += firstarg;
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/* Turn the plain C strings into Sds strings */
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argvcopy = zmalloc(sizeof(char*)*argc+1);
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for(j = 0; j < argc; j++)
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argvcopy[j] = sdsnew(argv[j]);
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/* Read the last argument from stdandard input */
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if (!isatty(fileno(stdin))) {
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sds lastarg = readArgFromStdin();
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argvcopy[argc] = lastarg;
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argc++;
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}
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if (argc < 1) {
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fprintf(stderr, "usage: redis-cli [-h host] [-p port] cmd arg1 arg2 arg3 ... argN\n");
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fprintf(stderr, "usage: echo \"argN\" | redis-cli [-h host] [-p port] cmd arg1 arg2 ... arg(N-1)\n");
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fprintf(stderr, "\nIf a pipe from standard input is detected this data is used as last argument.\n\n");
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fprintf(stderr, "example: cat /etc/passwd | redis-cli set my_passwd\n");
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fprintf(stderr, "example: redis-cli get my_passwd\n");
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exit(1);
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}
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return cliSendCommand(argc, argvcopy);
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}
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