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redis-cli.c
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/* Redis CLI (command line interface)
*
* Copyright (c) 2009-2012, 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 "fmacros.h"
#include "version.h"
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <signal.h>
#include <unistd.h>
#include <time.h>
#include <ctype.h>
#include <errno.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <assert.h>
#include <fcntl.h>
#include <limits.h>
#include <math.h>
#include <hiredis.h>
#ifdef USE_OPENSSL
#include <openssl/ssl.h>
#include <openssl/err.h>
#include <hiredis_ssl.h>
#endif
#include <sds.h> /* use sds.h from hiredis, so that only one set of sds functions will be present in the binary */
#include "dict.h"
#include "adlist.h"
#include "zmalloc.h"
#include "linenoise.h"
#include "help.h"
#include "anet.h"
#include "ae.h"
#define UNUSED(V) ((void) V)
#define OUTPUT_STANDARD 0
#define OUTPUT_RAW 1
#define OUTPUT_CSV 2
#define REDIS_CLI_KEEPALIVE_INTERVAL 15 /* seconds */
#define REDIS_CLI_DEFAULT_PIPE_TIMEOUT 30 /* seconds */
#define REDIS_CLI_HISTFILE_ENV "REDISCLI_HISTFILE"
#define REDIS_CLI_HISTFILE_DEFAULT ".rediscli_history"
#define REDIS_CLI_RCFILE_ENV "REDISCLI_RCFILE"
#define REDIS_CLI_RCFILE_DEFAULT ".redisclirc"
#define REDIS_CLI_AUTH_ENV "REDISCLI_AUTH"
#define REDIS_CLI_CLUSTER_YES_ENV "REDISCLI_CLUSTER_YES"
#define CLUSTER_MANAGER_SLOTS 16384
#define CLUSTER_MANAGER_MIGRATE_TIMEOUT 60000
#define CLUSTER_MANAGER_MIGRATE_PIPELINE 10
#define CLUSTER_MANAGER_REBALANCE_THRESHOLD 2
#define CLUSTER_MANAGER_INVALID_HOST_ARG \
"[ERR] Invalid arguments: you need to pass either a valid " \
"address (ie. 120.0.0.1:7000) or space separated IP " \
"and port (ie. 120.0.0.1 7000)\n"
#define CLUSTER_MANAGER_MODE() (config.cluster_manager_command.name != NULL)
#define CLUSTER_MANAGER_MASTERS_COUNT(nodes, replicas) (nodes/(replicas + 1))
#define CLUSTER_MANAGER_COMMAND(n,...) \
(redisCommand(n->context, __VA_ARGS__))
#define CLUSTER_MANAGER_NODE_ARRAY_FREE(array) zfree(array->alloc)
#define CLUSTER_MANAGER_PRINT_REPLY_ERROR(n, err) \
clusterManagerLogErr("Node %s:%d replied with error:\n%s\n", \
n->ip, n->port, err);
#define clusterManagerLogInfo(...) \
clusterManagerLog(CLUSTER_MANAGER_LOG_LVL_INFO,__VA_ARGS__)
#define clusterManagerLogErr(...) \
clusterManagerLog(CLUSTER_MANAGER_LOG_LVL_ERR,__VA_ARGS__)
#define clusterManagerLogWarn(...) \
clusterManagerLog(CLUSTER_MANAGER_LOG_LVL_WARN,__VA_ARGS__)
#define clusterManagerLogOk(...) \
clusterManagerLog(CLUSTER_MANAGER_LOG_LVL_SUCCESS,__VA_ARGS__)
#define CLUSTER_MANAGER_FLAG_MYSELF 1 << 0
#define CLUSTER_MANAGER_FLAG_SLAVE 1 << 1
#define CLUSTER_MANAGER_FLAG_FRIEND 1 << 2
#define CLUSTER_MANAGER_FLAG_NOADDR 1 << 3
#define CLUSTER_MANAGER_FLAG_DISCONNECT 1 << 4
#define CLUSTER_MANAGER_FLAG_FAIL 1 << 5
#define CLUSTER_MANAGER_CMD_FLAG_FIX 1 << 0
#define CLUSTER_MANAGER_CMD_FLAG_SLAVE 1 << 1
#define CLUSTER_MANAGER_CMD_FLAG_YES 1 << 2
#define CLUSTER_MANAGER_CMD_FLAG_AUTOWEIGHTS 1 << 3
#define CLUSTER_MANAGER_CMD_FLAG_EMPTYMASTER 1 << 4
#define CLUSTER_MANAGER_CMD_FLAG_SIMULATE 1 << 5
#define CLUSTER_MANAGER_CMD_FLAG_REPLACE 1 << 6
#define CLUSTER_MANAGER_CMD_FLAG_COPY 1 << 7
#define CLUSTER_MANAGER_CMD_FLAG_COLOR 1 << 8
#define CLUSTER_MANAGER_CMD_FLAG_CHECK_OWNERS 1 << 9
#define CLUSTER_MANAGER_CMD_FLAG_FIX_WITH_UNREACHABLE_MASTERS 1 << 10
#define CLUSTER_MANAGER_CMD_FLAG_MASTERS_ONLY 1 << 11
#define CLUSTER_MANAGER_CMD_FLAG_SLAVES_ONLY 1 << 12
#define CLUSTER_MANAGER_OPT_GETFRIENDS 1 << 0
#define CLUSTER_MANAGER_OPT_COLD 1 << 1
#define CLUSTER_MANAGER_OPT_UPDATE 1 << 2
#define CLUSTER_MANAGER_OPT_QUIET 1 << 6
#define CLUSTER_MANAGER_OPT_VERBOSE 1 << 7
#define CLUSTER_MANAGER_LOG_LVL_INFO 1
#define CLUSTER_MANAGER_LOG_LVL_WARN 2
#define CLUSTER_MANAGER_LOG_LVL_ERR 3
#define CLUSTER_MANAGER_LOG_LVL_SUCCESS 4
#define CLUSTER_JOIN_CHECK_AFTER 20
#define LOG_COLOR_BOLD "29;1m"
#define LOG_COLOR_RED "31;1m"
#define LOG_COLOR_GREEN "32;1m"
#define LOG_COLOR_YELLOW "33;1m"
#define LOG_COLOR_RESET "0m"
/* cliConnect() flags. */
#define CC_FORCE (1<<0) /* Re-connect if already connected. */
#define CC_QUIET (1<<1) /* Don't log connecting errors. */
/* --latency-dist palettes. */
int spectrum_palette_color_size = 19;
int spectrum_palette_color[] = {0,233,234,235,237,239,241,243,245,247,144,143,142,184,226,214,208,202,196};
int spectrum_palette_mono_size = 13;
int spectrum_palette_mono[] = {0,233,234,235,237,239,241,243,245,247,249,251,253};
/* The actual palette in use. */
int *spectrum_palette;
int spectrum_palette_size;
/* Dict Helpers */
static uint64_t dictSdsHash(const void *key);
static int dictSdsKeyCompare(void *privdata, const void *key1,
const void *key2);
static void dictSdsDestructor(void *privdata, void *val);
static void dictListDestructor(void *privdata, void *val);
/* Cluster Manager Command Info */
typedef struct clusterManagerCommand {
char *name;
int argc;
char **argv;
int flags;
int replicas;
char *from;
char *to;
char **weight;
int weight_argc;
char *master_id;
int slots;
int timeout;
int pipeline;
float threshold;
char *backup_dir;
} clusterManagerCommand;
static void createClusterManagerCommand(char *cmdname, int argc, char **argv);
static redisContext *context;
static struct config {
char *hostip;
int hostport;
char *hostsocket;
int tls;
char *sni;
char *cacert;
char *cacertdir;
char *cert;
char *key;
long repeat;
long interval;
int dbnum;
int interactive;
int shutdown;
int monitor_mode;
int pubsub_mode;
int latency_mode;
int latency_dist_mode;
int latency_history;
int lru_test_mode;
long long lru_test_sample_size;
int cluster_mode;
int cluster_reissue_command;
int slave_mode;
int pipe_mode;
int pipe_timeout;
int getrdb_mode;
int stat_mode;
int scan_mode;
int intrinsic_latency_mode;
int intrinsic_latency_duration;
char *pattern;
char *rdb_filename;
int bigkeys;
int memkeys;
unsigned memkeys_samples;
int hotkeys;
int stdinarg; /* get last arg from stdin. (-x option) */
char *auth;
int askpass;
char *user;
int output; /* output mode, see OUTPUT_* defines */
sds mb_delim;
char prompt[128];
char *eval;
int eval_ldb;
int eval_ldb_sync; /* Ask for synchronous mode of the Lua debugger. */
int eval_ldb_end; /* Lua debugging session ended. */
int enable_ldb_on_eval; /* Handle manual SCRIPT DEBUG + EVAL commands. */
int last_cmd_type;
int verbose;
clusterManagerCommand cluster_manager_command;
int no_auth_warning;
int resp3;
} config;
/* User preferences. */
static struct pref {
int hints;
} pref;
static volatile sig_atomic_t force_cancel_loop = 0;
static void usage(void);
static void slaveMode(void);
char *redisGitSHA1(void);
char *redisGitDirty(void);
static int cliConnect(int force);
static char *getInfoField(char *info, char *field);
static long getLongInfoField(char *info, char *field);
/*------------------------------------------------------------------------------
* Utility functions
*--------------------------------------------------------------------------- */
uint16_t crc16(const char *buf, int len);
static long long ustime(void) {
struct timeval tv;
long long ust;
gettimeofday(&tv, NULL);
ust = ((long long)tv.tv_sec)*1000000;
ust += tv.tv_usec;
return ust;
}
static long long mstime(void) {
return ustime()/1000;
}
static void cliRefreshPrompt(void) {
if (config.eval_ldb) return;
sds prompt = sdsempty();
if (config.hostsocket != NULL) {
prompt = sdscatfmt(prompt,"redis %s",config.hostsocket);
} else {
char addr[256];
anetFormatAddr(addr, sizeof(addr), config.hostip, config.hostport);
prompt = sdscatlen(prompt,addr,strlen(addr));
}
/* Add [dbnum] if needed */
if (config.dbnum != 0)
prompt = sdscatfmt(prompt,"[%i]",config.dbnum);
/* Copy the prompt in the static buffer. */
prompt = sdscatlen(prompt,"> ",2);
snprintf(config.prompt,sizeof(config.prompt),"%s",prompt);
sdsfree(prompt);
}
/* Return the name of the dotfile for the specified 'dotfilename'.
* Normally it just concatenates user $HOME to the file specified
* in 'dotfilename'. However if the environment varialbe 'envoverride'
* is set, its value is taken as the path.
*
* The function returns NULL (if the file is /dev/null or cannot be
* obtained for some error), or an SDS string that must be freed by
* the user. */
static sds getDotfilePath(char *envoverride, char *dotfilename) {
char *path = NULL;
sds dotPath = NULL;
/* Check the env for a dotfile override. */
path = getenv(envoverride);
if (path != NULL && *path != '\0') {
if (!strcmp("/dev/null", path)) {
return NULL;
}
/* If the env is set, return it. */
dotPath = sdsnew(path);
} else {
char *home = getenv("HOME");
if (home != NULL && *home != '\0') {
/* If no override is set use $HOME/<dotfilename>. */
dotPath = sdscatprintf(sdsempty(), "%s/%s", home, dotfilename);
}
}
return dotPath;
}
/* URL-style percent decoding. */
#define isHexChar(c) (isdigit(c) || (c >= 'a' && c <= 'f'))
#define decodeHexChar(c) (isdigit(c) ? c - '0' : c - 'a' + 10)
#define decodeHex(h, l) ((decodeHexChar(h) << 4) + decodeHexChar(l))
static sds percentDecode(const char *pe, size_t len) {
const char *end = pe + len;
sds ret = sdsempty();
const char *curr = pe;
while (curr < end) {
if (*curr == '%') {
if ((end - curr) < 2) {
fprintf(stderr, "Incomplete URI encoding\n");
exit(1);
}
char h = tolower(*(++curr));
char l = tolower(*(++curr));
if (!isHexChar(h) || !isHexChar(l)) {
fprintf(stderr, "Illegal character in URI encoding\n");
exit(1);
}
char c = decodeHex(h, l);
ret = sdscatlen(ret, &c, 1);
curr++;
} else {
ret = sdscatlen(ret, curr++, 1);
}
}
return ret;
}
/* Parse a URI and extract the server connection information.
* URI scheme is based on the the provisional specification[1] excluding support
* for query parameters. Valid URIs are:
* scheme: "redis://"
* authority: [[<username> ":"] <password> "@"] [<hostname> [":" <port>]]
* path: ["/" [<db>]]
*
* [1]: https://www.iana.org/assignments/uri-schemes/prov/redis */
static void parseRedisUri(const char *uri) {
const char *scheme = "redis://";
const char *curr = uri;
const char *end = uri + strlen(uri);
const char *userinfo, *username, *port, *host, *path;
/* URI must start with a valid scheme. */
if (strncasecmp(scheme, curr, strlen(scheme))) {
fprintf(stderr,"Invalid URI scheme\n");
exit(1);
}
curr += strlen(scheme);
if (curr == end) return;
/* Extract user info. */
if ((userinfo = strchr(curr,'@'))) {
if ((username = strchr(curr, ':')) && username < userinfo) {
/* If provided, username is ignored. */
curr = username + 1;
}
config.auth = percentDecode(curr, userinfo - curr);
curr = userinfo + 1;
}
if (curr == end) return;
/* Extract host and port. */
path = strchr(curr, '/');
if (*curr != '/') {
host = path ? path - 1 : end;
if ((port = strchr(curr, ':'))) {
config.hostport = atoi(port + 1);
host = port - 1;
}
config.hostip = sdsnewlen(curr, host - curr + 1);
}
curr = path ? path + 1 : end;
if (curr == end) return;
/* Extract database number. */
config.dbnum = atoi(curr);
}
static uint64_t dictSdsHash(const void *key) {
return dictGenHashFunction((unsigned char*)key, sdslen((char*)key));
}
static int dictSdsKeyCompare(void *privdata, const void *key1,
const void *key2)
{
int l1,l2;
DICT_NOTUSED(privdata);
l1 = sdslen((sds)key1);
l2 = sdslen((sds)key2);
if (l1 != l2) return 0;
return memcmp(key1, key2, l1) == 0;
}
static void dictSdsDestructor(void *privdata, void *val)
{
DICT_NOTUSED(privdata);
sdsfree(val);
}
void dictListDestructor(void *privdata, void *val)
{
DICT_NOTUSED(privdata);
listRelease((list*)val);
}
/* _serverAssert is needed by dict */
void _serverAssert(const char *estr, const char *file, int line) {
fprintf(stderr, "=== ASSERTION FAILED ===");
fprintf(stderr, "==> %s:%d '%s' is not true",file,line,estr);
*((char*)-1) = 'x';
}
/*------------------------------------------------------------------------------
* Help functions
*--------------------------------------------------------------------------- */
#define CLI_HELP_COMMAND 1
#define CLI_HELP_GROUP 2
typedef struct {
int type;
int argc;
sds *argv;
sds full;
/* Only used for help on commands */
struct commandHelp *org;
} helpEntry;
static helpEntry *helpEntries;
static int helpEntriesLen;
static sds cliVersion(void) {
sds version;
version = sdscatprintf(sdsempty(), "%s", REDIS_VERSION);
/* Add git commit and working tree status when available */
if (strtoll(redisGitSHA1(),NULL,16)) {
version = sdscatprintf(version, " (git:%s", redisGitSHA1());
if (strtoll(redisGitDirty(),NULL,10))
version = sdscatprintf(version, "-dirty");
version = sdscat(version, ")");
}
return version;
}
static void cliInitHelp(void) {
int commandslen = sizeof(commandHelp)/sizeof(struct commandHelp);
int groupslen = sizeof(commandGroups)/sizeof(char*);
int i, len, pos = 0;
helpEntry tmp;
helpEntriesLen = len = commandslen+groupslen;
helpEntries = zmalloc(sizeof(helpEntry)*len);
for (i = 0; i < groupslen; i++) {
tmp.argc = 1;
tmp.argv = zmalloc(sizeof(sds));
tmp.argv[0] = sdscatprintf(sdsempty(),"@%s",commandGroups[i]);
tmp.full = tmp.argv[0];
tmp.type = CLI_HELP_GROUP;
tmp.org = NULL;
helpEntries[pos++] = tmp;
}
for (i = 0; i < commandslen; i++) {
tmp.argv = sdssplitargs(commandHelp[i].name,&tmp.argc);
tmp.full = sdsnew(commandHelp[i].name);
tmp.type = CLI_HELP_COMMAND;
tmp.org = &commandHelp[i];
helpEntries[pos++] = tmp;
}
}
/* cliInitHelp() setups the helpEntries array with the command and group
* names from the help.h file. However the Redis instance we are connecting
* to may support more commands, so this function integrates the previous
* entries with additional entries obtained using the COMMAND command
* available in recent versions of Redis. */
static void cliIntegrateHelp(void) {
if (cliConnect(CC_QUIET) == REDIS_ERR) return;
redisReply *reply = redisCommand(context, "COMMAND");
if(reply == NULL || reply->type != REDIS_REPLY_ARRAY) return;
/* Scan the array reported by COMMAND and fill only the entries that
* don't already match what we have. */
for (size_t j = 0; j < reply->elements; j++) {
redisReply *entry = reply->element[j];
if (entry->type != REDIS_REPLY_ARRAY || entry->elements < 4 ||
entry->element[0]->type != REDIS_REPLY_STRING ||
entry->element[1]->type != REDIS_REPLY_INTEGER ||
entry->element[3]->type != REDIS_REPLY_INTEGER) return;
char *cmdname = entry->element[0]->str;
int i;
for (i = 0; i < helpEntriesLen; i++) {
helpEntry *he = helpEntries+i;
if (!strcasecmp(he->argv[0],cmdname))
break;
}
if (i != helpEntriesLen) continue;
helpEntriesLen++;
helpEntries = zrealloc(helpEntries,sizeof(helpEntry)*helpEntriesLen);
helpEntry *new = helpEntries+(helpEntriesLen-1);
new->argc = 1;
new->argv = zmalloc(sizeof(sds));
new->argv[0] = sdsnew(cmdname);
new->full = new->argv[0];
new->type = CLI_HELP_COMMAND;
sdstoupper(new->argv[0]);
struct commandHelp *ch = zmalloc(sizeof(*ch));
ch->name = new->argv[0];
ch->params = sdsempty();
int args = llabs(entry->element[1]->integer);
args--; /* Remove the command name itself. */
if (entry->element[3]->integer == 1) {
ch->params = sdscat(ch->params,"key ");
args--;
}
while(args-- > 0) ch->params = sdscat(ch->params,"arg ");
if (entry->element[1]->integer < 0)
ch->params = sdscat(ch->params,"...options...");
ch->summary = "Help not available";
ch->group = 0;
ch->since = "not known";
new->org = ch;
}
freeReplyObject(reply);
}
/* Output command help to stdout. */
static void cliOutputCommandHelp(struct commandHelp *help, int group) {
printf("\r\n \x1b[1m%s\x1b[0m \x1b[90m%s\x1b[0m\r\n", help->name, help->params);
printf(" \x1b[33msummary:\x1b[0m %s\r\n", help->summary);
printf(" \x1b[33msince:\x1b[0m %s\r\n", help->since);
if (group) {
printf(" \x1b[33mgroup:\x1b[0m %s\r\n", commandGroups[help->group]);
}
}
/* Print generic help. */
static void cliOutputGenericHelp(void) {
sds version = cliVersion();
printf(
"redis-cli %s\n"
"To get help about Redis commands type:\n"
" \"help @<group>\" to get a list of commands in <group>\n"
" \"help <command>\" for help on <command>\n"
" \"help <tab>\" to get a list of possible help topics\n"
" \"quit\" to exit\n"
"\n"
"To set redis-cli preferences:\n"
" \":set hints\" enable online hints\n"
" \":set nohints\" disable online hints\n"
"Set your preferences in ~/.redisclirc\n",
version
);
sdsfree(version);
}
/* Output all command help, filtering by group or command name. */
static void cliOutputHelp(int argc, char **argv) {
int i, j, len;
int group = -1;
helpEntry *entry;
struct commandHelp *help;
if (argc == 0) {
cliOutputGenericHelp();
return;
} else if (argc > 0 && argv[0][0] == '@') {
len = sizeof(commandGroups)/sizeof(char*);
for (i = 0; i < len; i++) {
if (strcasecmp(argv[0]+1,commandGroups[i]) == 0) {
group = i;
break;
}
}
}
assert(argc > 0);
for (i = 0; i < helpEntriesLen; i++) {
entry = &helpEntries[i];
if (entry->type != CLI_HELP_COMMAND) continue;
help = entry->org;
if (group == -1) {
/* Compare all arguments */
if (argc == entry->argc) {
for (j = 0; j < argc; j++) {
if (strcasecmp(argv[j],entry->argv[j]) != 0) break;
}
if (j == argc) {
cliOutputCommandHelp(help,1);
}
}
} else {
if (group == help->group) {
cliOutputCommandHelp(help,0);
}
}
}
printf("\r\n");
}
/* Linenoise completion callback. */
static void completionCallback(const char *buf, linenoiseCompletions *lc) {
size_t startpos = 0;
int mask;
int i;
size_t matchlen;
sds tmp;
if (strncasecmp(buf,"help ",5) == 0) {
startpos = 5;
while (isspace(buf[startpos])) startpos++;
mask = CLI_HELP_COMMAND | CLI_HELP_GROUP;
} else {
mask = CLI_HELP_COMMAND;
}
for (i = 0; i < helpEntriesLen; i++) {
if (!(helpEntries[i].type & mask)) continue;
matchlen = strlen(buf+startpos);
if (strncasecmp(buf+startpos,helpEntries[i].full,matchlen) == 0) {
tmp = sdsnewlen(buf,startpos);
tmp = sdscat(tmp,helpEntries[i].full);
linenoiseAddCompletion(lc,tmp);
sdsfree(tmp);
}
}
}
/* Linenoise hints callback. */
static char *hintsCallback(const char *buf, int *color, int *bold) {
if (!pref.hints) return NULL;
int i, argc, buflen = strlen(buf);
sds *argv = sdssplitargs(buf,&argc);
int endspace = buflen && isspace(buf[buflen-1]);
/* Check if the argument list is empty and return ASAP. */
if (argc == 0) {
sdsfreesplitres(argv,argc);
return NULL;
}
for (i = 0; i < helpEntriesLen; i++) {
if (!(helpEntries[i].type & CLI_HELP_COMMAND)) continue;
if (strcasecmp(argv[0],helpEntries[i].full) == 0 ||
strcasecmp(buf,helpEntries[i].full) == 0)
{
*color = 90;
*bold = 0;
sds hint = sdsnew(helpEntries[i].org->params);
/* Remove arguments from the returned hint to show only the
* ones the user did not yet typed. */
int toremove = argc-1;
while(toremove > 0 && sdslen(hint)) {
if (hint[0] == '[') break;
if (hint[0] == ' ') toremove--;
sdsrange(hint,1,-1);
}
/* Add an initial space if needed. */
if (!endspace) {
sds newhint = sdsnewlen(" ",1);
newhint = sdscatsds(newhint,hint);
sdsfree(hint);
hint = newhint;
}
sdsfreesplitres(argv,argc);
return hint;
}
}
sdsfreesplitres(argv,argc);
return NULL;
}
static void freeHintsCallback(void *ptr) {
sdsfree(ptr);
}
/*------------------------------------------------------------------------------
* Networking / parsing
*--------------------------------------------------------------------------- */
/* Send AUTH command to the server */
static int cliAuth(void) {
redisReply *reply;
if (config.auth == NULL) return REDIS_OK;
if (config.user == NULL)
reply = redisCommand(context,"AUTH %s",config.auth);
else
reply = redisCommand(context,"AUTH %s %s",config.user,config.auth);
if (reply != NULL) {
if (reply->type == REDIS_REPLY_ERROR)
fprintf(stderr,"Warning: AUTH failed\n");
freeReplyObject(reply);
return REDIS_OK;
}
return REDIS_ERR;
}
/* Send SELECT dbnum to the server */
static int cliSelect(void) {
redisReply *reply;
if (config.dbnum == 0) return REDIS_OK;
reply = redisCommand(context,"SELECT %d",config.dbnum);
if (reply != NULL) {
int result = REDIS_OK;
if (reply->type == REDIS_REPLY_ERROR) result = REDIS_ERR;
freeReplyObject(reply);
return result;
}
return REDIS_ERR;
}
/* Wrapper around redisSecureConnection to avoid hiredis_ssl dependencies if
* not building with TLS support.
*/
static int cliSecureConnection(redisContext *c, const char **err) {
#ifdef USE_OPENSSL
static SSL_CTX *ssl_ctx = NULL;
if (!ssl_ctx) {
ssl_ctx = SSL_CTX_new(SSLv23_client_method());
if (!ssl_ctx) {
*err = "Failed to create SSL_CTX";
goto error;
}
SSL_CTX_set_options(ssl_ctx, SSL_OP_NO_SSLv2 | SSL_OP_NO_SSLv3);
SSL_CTX_set_verify(ssl_ctx, SSL_VERIFY_PEER, NULL);
if (config.cacert || config.cacertdir) {
if (!SSL_CTX_load_verify_locations(ssl_ctx, config.cacert, config.cacertdir)) {
*err = "Invalid CA Certificate File/Directory";
goto error;
}
} else {
if (!SSL_CTX_set_default_verify_paths(ssl_ctx)) {
*err = "Failed to use default CA paths";
goto error;
}
}
if (config.cert && !SSL_CTX_use_certificate_chain_file(ssl_ctx, config.cert)) {
*err = "Invalid client certificate";
goto error;
}
if (config.key && !SSL_CTX_use_PrivateKey_file(ssl_ctx, config.key, SSL_FILETYPE_PEM)) {
*err = "Invalid private key";
goto error;
}
}
SSL *ssl = SSL_new(ssl_ctx);
if (!ssl) {
*err = "Failed to create SSL object";
return REDIS_ERR;
}
if (config.sni && !SSL_set_tlsext_host_name(ssl, config.sni)) {
*err = "Failed to configure SNI";
SSL_free(ssl);
return REDIS_ERR;
}
return redisInitiateSSL(c, ssl);
error:
SSL_CTX_free(ssl_ctx);
ssl_ctx = NULL;
return REDIS_ERR;
#else
(void) c;
(void) err;
return REDIS_OK;
#endif
}
/* Select RESP3 mode if redis-cli was started with the -3 option. */
static int cliSwitchProto(void) {
redisReply *reply;
if (config.resp3 == 0) return REDIS_OK;
reply = redisCommand(context,"HELLO 3");
if (reply != NULL) {
int result = REDIS_OK;
if (reply->type == REDIS_REPLY_ERROR) result = REDIS_ERR;
freeReplyObject(reply);
return result;
}
return REDIS_ERR;
}
/* Connect to the server. It is possible to pass certain flags to the function:
* CC_FORCE: The connection is performed even if there is already
* a connected socket.
* CC_QUIET: Don't print errors if connection fails. */
static int cliConnect(int flags) {
if (context == NULL || flags & CC_FORCE) {
if (context != NULL) {
redisFree(context);
}
if (config.hostsocket == NULL) {
context = redisConnect(config.hostip,config.hostport);
} else {
context = redisConnectUnix(config.hostsocket);
}
if (!context->err && config.tls) {
const char *err = NULL;
if (cliSecureConnection(context, &err) == REDIS_ERR && err) {
fprintf(stderr, "Could not negotiate a TLS connection: %s\n", err);
context = NULL;
redisFree(context);
return REDIS_ERR;
}
}
if (context->err) {
if (!(flags & CC_QUIET)) {
fprintf(stderr,"Could not connect to Redis at ");
if (config.hostsocket == NULL)
fprintf(stderr,"%s:%d: %s\n",
config.hostip,config.hostport,context->errstr);
else
fprintf(stderr,"%s: %s\n",
config.hostsocket,context->errstr);
}
redisFree(context);
context = NULL;
return REDIS_ERR;
}
/* Set aggressive KEEP_ALIVE socket option in the Redis context socket
* in order to prevent timeouts caused by the execution of long
* commands. At the same time this improves the detection of real
* errors. */
anetKeepAlive(NULL, context->fd, REDIS_CLI_KEEPALIVE_INTERVAL);
/* Do AUTH, select the right DB, switch to RESP3 if needed. */
if (cliAuth() != REDIS_OK)
return REDIS_ERR;
if (cliSelect() != REDIS_OK)
return REDIS_ERR;
if (cliSwitchProto() != REDIS_OK)
return REDIS_ERR;
}
return REDIS_OK;
}
static void cliPrintContextError(void) {
if (context == NULL) return;
fprintf(stderr,"Error: %s\n",context->errstr);
}
static sds cliFormatReplyTTY(redisReply *r, char *prefix) {
sds out = sdsempty();
switch (r->type) {
case REDIS_REPLY_ERROR:
out = sdscatprintf(out,"(error) %s\n", r->str);
break;
case REDIS_REPLY_STATUS:
out = sdscat(out,r->str);
out = sdscat(out,"\n");
break;
case REDIS_REPLY_INTEGER:
out = sdscatprintf(out,"(integer) %lld\n",r->integer);
break;
case REDIS_REPLY_DOUBLE:
out = sdscatprintf(out,"(double) %s\n",r->str);
break;
case REDIS_REPLY_STRING:
case REDIS_REPLY_VERB:
/* If you are producing output for the standard output we want
* a more interesting output with quoted characters and so forth,
* unless it's a verbatim string type. */
if (r->type == REDIS_REPLY_STRING) {
out = sdscatrepr(out,r->str,r->len);
out = sdscat(out,"\n");
} else {
out = sdscatlen(out,r->str,r->len);
out = sdscat(out,"\n");
}
break;
case REDIS_REPLY_NIL:
out = sdscat(out,"(nil)\n");
break;
case REDIS_REPLY_BOOL:
out = sdscat(out,r->integer ? "(true)\n" : "(false)\n");
break;
case REDIS_REPLY_ARRAY:
case REDIS_REPLY_MAP:
case REDIS_REPLY_SET:
if (r->elements == 0) {
if (r->type == REDIS_REPLY_ARRAY)
out = sdscat(out,"(empty array)\n");
else if (r->type == REDIS_REPLY_MAP)
out = sdscat(out,"(empty hash)\n");
else if (r->type == REDIS_REPLY_SET)
out = sdscat(out,"(empty set)\n");
else
out = sdscat(out,"(empty aggregate type)\n");
} else {
unsigned int i, idxlen = 0;
char _prefixlen[16];
char _prefixfmt[16];
sds _prefix;
sds tmp;
/* Calculate chars needed to represent the largest index */
i = r->elements;
if (r->type == REDIS_REPLY_MAP) i /= 2;
do {
idxlen++;
i /= 10;
} while(i);
/* Prefix for nested multi bulks should grow with idxlen+2 spaces */
memset(_prefixlen,' ',idxlen+2);
_prefixlen[idxlen+2] = '\0';
_prefix = sdscat(sdsnew(prefix),_prefixlen);
/* Setup prefix format for every entry */
char numsep;
if (r->type == REDIS_REPLY_SET) numsep = '~';
else if (r->type == REDIS_REPLY_MAP) numsep = '#';
else numsep = ')';
snprintf(_prefixfmt,sizeof(_prefixfmt),"%%s%%%ud%c ",idxlen,numsep);
for (i = 0; i < r->elements; i++) {
unsigned int human_idx = (r->type == REDIS_REPLY_MAP) ?
i/2 : i;
human_idx++; /* Make it 1-based. */