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/* Redis CLI (command line interface)
*
* Copyright (c) 2006-2009, Salvatore Sanfilippo <antirez at gmail 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.
*/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include "anet.h"
#include "sds.h"
#include "adlist.h"
#include "zmalloc.h"
#define REDIS_CMD_INLINE 1
#define REDIS_CMD_BULK 2
#define REDIS_CMD_INTREPLY 4
#define REDIS_CMD_RETCODEREPLY 8
#define REDIS_CMD_BULKREPLY 16
#define REDIS_CMD_MULTIBULKREPLY 32
#define REDIS_CMD_SINGLELINEREPLY 64
#define REDIS_NOTUSED(V) ((void) V)
static struct config {
char *hostip;
int hostport;
} config;
struct redisCommand {
char *name;
int arity;
int flags;
};
static struct redisCommand cmdTable[] = {
{"get",2,REDIS_CMD_INLINE|REDIS_CMD_BULKREPLY},
{"set",3,REDIS_CMD_BULK|REDIS_CMD_RETCODEREPLY},
{"setnx",3,REDIS_CMD_BULK|REDIS_CMD_INTREPLY},
{"del",2,REDIS_CMD_INLINE|REDIS_CMD_INTREPLY},
{"exists",2,REDIS_CMD_INLINE|REDIS_CMD_INTREPLY},
{"incr",2,REDIS_CMD_INLINE|REDIS_CMD_INTREPLY},
{"decr",2,REDIS_CMD_INLINE|REDIS_CMD_INTREPLY},
{"rpush",3,REDIS_CMD_BULK|REDIS_CMD_RETCODEREPLY},
{"lpush",3,REDIS_CMD_BULK|REDIS_CMD_RETCODEREPLY},
{"rpop",2,REDIS_CMD_INLINE|REDIS_CMD_BULKREPLY},
{"lpop",2,REDIS_CMD_INLINE|REDIS_CMD_BULKREPLY},
{"llen",2,REDIS_CMD_INLINE|REDIS_CMD_INTREPLY},
{"lindex",3,REDIS_CMD_INLINE|REDIS_CMD_BULKREPLY},
{"lset",4,REDIS_CMD_BULK|REDIS_CMD_RETCODEREPLY},
{"lrange",4,REDIS_CMD_INLINE|REDIS_CMD_MULTIBULKREPLY},
{"ltrim",4,REDIS_CMD_INLINE|REDIS_CMD_RETCODEREPLY},
{"lrem",4,REDIS_CMD_BULK|REDIS_CMD_INTREPLY},
{"sadd",3,REDIS_CMD_BULK|REDIS_CMD_INTREPLY},
{"srem",3,REDIS_CMD_BULK|REDIS_CMD_INTREPLY},
{"sismember",3,REDIS_CMD_BULK|REDIS_CMD_INTREPLY},
{"scard",2,REDIS_CMD_INLINE|REDIS_CMD_INTREPLY},
{"sinter",-2,REDIS_CMD_INLINE|REDIS_CMD_MULTIBULKREPLY},
{"sinterstore",-3,REDIS_CMD_INLINE|REDIS_CMD_RETCODEREPLY},
{"smembers",2,REDIS_CMD_INLINE|REDIS_CMD_MULTIBULKREPLY},
{"incrby",3,REDIS_CMD_INLINE|REDIS_CMD_INTREPLY},
{"decrby",3,REDIS_CMD_INLINE|REDIS_CMD_INTREPLY},
{"randomkey",1,REDIS_CMD_INLINE|REDIS_CMD_SINGLELINEREPLY},
{"select",2,REDIS_CMD_INLINE|REDIS_CMD_RETCODEREPLY},
{"move",3,REDIS_CMD_INLINE|REDIS_CMD_INTREPLY},
{"rename",3,REDIS_CMD_INLINE|REDIS_CMD_RETCODEREPLY},
{"renamenx",3,REDIS_CMD_INLINE|REDIS_CMD_INTREPLY},
{"keys",2,REDIS_CMD_INLINE|REDIS_CMD_BULKREPLY},
{"dbsize",1,REDIS_CMD_INLINE|REDIS_CMD_INTREPLY},
{"ping",1,REDIS_CMD_INLINE|REDIS_CMD_RETCODEREPLY},
{"echo",2,REDIS_CMD_BULK|REDIS_CMD_BULKREPLY},
{"save",1,REDIS_CMD_INLINE|REDIS_CMD_RETCODEREPLY},
{"bgsave",1,REDIS_CMD_INLINE|REDIS_CMD_RETCODEREPLY},
{"shutdown",1,REDIS_CMD_INLINE|REDIS_CMD_RETCODEREPLY},
{"lastsave",1,REDIS_CMD_INLINE|REDIS_CMD_INTREPLY},
{"type",2,REDIS_CMD_INLINE|REDIS_CMD_SINGLELINEREPLY},
{"flushdb",1,REDIS_CMD_INLINE|REDIS_CMD_RETCODEREPLY},
{"flushall",1,REDIS_CMD_INLINE|REDIS_CMD_RETCODEREPLY},
{"sort",-2,REDIS_CMD_INLINE|REDIS_CMD_MULTIBULKREPLY},
{"info",1,REDIS_CMD_INLINE|REDIS_CMD_BULKREPLY},
{"mget",-2,REDIS_CMD_INLINE|REDIS_CMD_MULTIBULKREPLY},
{NULL,0,0}
};
static struct redisCommand *lookupCommand(char *name) {
int j = 0;
while(cmdTable[j].name != NULL) {
if (!strcasecmp(name,cmdTable[j].name)) return &cmdTable[j];
j++;
}
return NULL;
}
static int cliConnect(void) {
char err[ANET_ERR_LEN];
int fd;
fd = anetTcpConnect(err,config.hostip,config.hostport);
if (fd == ANET_ERR) {
fprintf(stderr,"Connect: %s\n",err);
return -1;
}
anetTcpNoDelay(NULL,fd);
return fd;
}
static sds cliReadLine(int fd) {
sds line = sdsempty();
while(1) {
char c;
if (read(fd,&c,1) == -1) {
sdsfree(line);
return NULL;
} else if (c == '\n') {
break;
} else {
line = sdscatlen(line,&c,1);
}
}
return sdstrim(line,"\r\n");
}
static int cliReadInlineReply(int fd, int type) {
sds reply = cliReadLine(fd);
if (reply == NULL) return 1;
printf("%s\n", reply);
if (type == REDIS_CMD_SINGLELINEREPLY) return 0;
if (type == REDIS_CMD_INTREPLY) return atoi(reply) < 0;
if (type == REDIS_CMD_RETCODEREPLY) return reply[0] == '-';
return 0;
}
static int cliReadBulkReply(int fd, int multibulk) {
sds replylen = cliReadLine(fd);
char *reply, crlf[2];
int bulklen, error = 0;
if (replylen == NULL) return 1;
if (strcmp(replylen,"nil") == 0) {
sdsfree(replylen);
printf("(nil)\n");
return 0;
}
bulklen = atoi(replylen);
if (multibulk && bulklen == -1) {
sdsfree(replylen);
printf("(nil)");
return 0;
}
if (bulklen < 0) {
bulklen = -bulklen;
error = 1;
}
reply = zmalloc(bulklen);
anetRead(fd,reply,bulklen);
anetRead(fd,crlf,2);
if (bulklen && fwrite(reply,bulklen,1,stdout) == 0) {
zfree(reply);
return 1;
}
if (!multibulk && isatty(fileno(stdout)) && reply[bulklen-1] != '\n')
printf("\n");
zfree(reply);
return error;
}
static int cliReadMultiBulkReply(int fd) {
sds replylen = cliReadLine(fd);
int elements, c = 1;
if (replylen == NULL) return 1;
if (strcmp(replylen,"nil") == 0) {
sdsfree(replylen);
printf("(nil)\n");
return 0;
}
elements = atoi(replylen);
while(elements--) {
printf("%d. ", c);
if (cliReadBulkReply(fd,1)) return 1;
printf("\n");
c++;
}
return 0;
}
static int cliSendCommand(int argc, char **argv) {
struct redisCommand *rc = lookupCommand(argv[0]);
int fd, j, retval = 0;
sds cmd = sdsempty();
if (!rc) {
fprintf(stderr,"Unknown command '%s'\n",argv[0]);
return 1;
}
if ((rc->arity > 0 && argc != rc->arity) ||
(rc->arity < 0 && argc < -rc->arity)) {
fprintf(stderr,"Wrong number of arguments for '%s'\n",rc->name);
return 1;
}
if ((fd = cliConnect()) == -1) return 1;
/* Build the command to send */
for (j = 0; j < argc; j++) {
if (j != 0) cmd = sdscat(cmd," ");
if (j == argc-1 && rc->flags & REDIS_CMD_BULK) {
cmd = sdscatprintf(cmd,"%d",sdslen(argv[j]));
} else {
cmd = sdscatlen(cmd,argv[j],sdslen(argv[j]));
}
}
cmd = sdscat(cmd,"\r\n");
if (rc->flags & REDIS_CMD_BULK) {
cmd = sdscatlen(cmd,argv[argc-1],sdslen(argv[argc-1]));
cmd = sdscat(cmd,"\r\n");
}
anetWrite(fd,cmd,sdslen(cmd));
if (rc->flags & REDIS_CMD_INTREPLY) {
retval = cliReadInlineReply(fd,REDIS_CMD_INTREPLY);
} else if (rc->flags & REDIS_CMD_RETCODEREPLY) {
retval = cliReadInlineReply(fd,REDIS_CMD_RETCODEREPLY);
} else if (rc->flags & REDIS_CMD_SINGLELINEREPLY) {
retval = cliReadInlineReply(fd,REDIS_CMD_SINGLELINEREPLY);
} else if (rc->flags & REDIS_CMD_BULKREPLY) {
retval = cliReadBulkReply(fd,0);
} else if (rc->flags & REDIS_CMD_MULTIBULKREPLY) {
retval = cliReadMultiBulkReply(fd);
}
if (retval) {
close(fd);
return retval;
}
close(fd);
return 0;
}
static int parseOptions(int argc, char **argv) {
int i;
for (i = 1; i < argc; i++) {
int lastarg = i==argc-1;
if (!strcmp(argv[i],"-h") && !lastarg) {
char *ip = zmalloc(32);
if (anetResolve(NULL,argv[i+1],ip) == ANET_ERR) {
printf("Can't resolve %s\n", argv[i]);
exit(1);
}
config.hostip = ip;
i++;
} else if (!strcmp(argv[i],"-p") && !lastarg) {
config.hostport = atoi(argv[i+1]);
i++;
} else {
break;
}
}
return i;
}
static sds readArgFromStdin(void) {
char buf[1024];
sds arg = sdsempty();
while(1) {
int nread = read(fileno(stdin),buf,1024);
if (nread == 0) break;
else if (nread == -1) {
perror("Reading from standard input");
exit(1);
}
arg = sdscatlen(arg,buf,nread);
}
return arg;
}
int main(int argc, char **argv) {
int firstarg, j;
char **argvcopy;
config.hostip = "127.0.0.1";
config.hostport = 6379;
firstarg = parseOptions(argc,argv);
argc -= firstarg;
argv += firstarg;
/* Turn the plain C strings into Sds strings */
argvcopy = zmalloc(sizeof(char*)*argc+1);
for(j = 0; j < argc; j++)
argvcopy[j] = sdsnew(argv[j]);
/* Read the last argument from stdandard input */
if (!isatty(fileno(stdin))) {
sds lastarg = readArgFromStdin();
argvcopy[argc] = lastarg;
argc++;
}
if (argc < 1) {
fprintf(stderr, "usage: redis-cli [-h host] [-p port] cmd arg1 arg2 arg3 ... argN\n");
fprintf(stderr, "usage: echo \"argN\" | redis-cli [-h host] [-p port] cmd arg1 arg2 ... arg(N-1)\n");
fprintf(stderr, "\nIf a pipe from standard input is detected this data is used as last argument.\n\n");
fprintf(stderr, "example: cat /etc/passwd | redis-cli set my_passwd\n");
fprintf(stderr, "example: redis-cli get my_passwd\n");
exit(1);
}
return cliSendCommand(argc, argvcopy);
}
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