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library.c
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library.c
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#include "php_redis.h"
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "common.h"
#include "php_network.h"
#include <sys/types.h>
#ifdef HAVE_REDIS_IGBINARY
#include "igbinary/igbinary.h"
#endif
#ifdef HAVE_REDIS_MSGPACK
#include "msgpack/php_msgpack.h"
#endif
#ifdef HAVE_REDIS_LZF
#include <lzf.h>
#ifndef LZF_MARGIN
#define LZF_MARGIN 128
#endif
#endif
#ifdef HAVE_REDIS_ZSTD
#include <zstd.h>
#endif
#ifdef HAVE_REDIS_LZ4
#include <lz4.h>
#include <lz4hc.h>
/* uint8_t crf + int length */
#define REDIS_LZ4_HDR_SIZE (sizeof(uint8_t) + sizeof(int))
#if defined(LZ4HC_CLEVEL_MAX)
/* version >= 1.7.5 */
#define REDIS_LZ4_MAX_CLEVEL LZ4HC_CLEVEL_MAX
#elif defined (LZ4HC_MAX_CLEVEL)
/* version >= 1.7.3 */
#define REDIS_LZ4_MAX_CLEVEL LZ4HC_MAX_CLEVEL
#else
/* older versions */
#define REDIS_LZ4_MAX_CLEVEL 12
#endif
#endif
#include <zend_exceptions.h>
#include "php_redis.h"
#include "library.h"
#include "redis_commands.h"
#ifdef HAVE_REDIS_JSON
#include <ext/json/php_json.h>
#endif
#include <ext/standard/php_rand.h>
#include <ext/hash/php_hash.h>
#define UNSERIALIZE_NONE 0
#define UNSERIALIZE_KEYS 1
#define UNSERIALIZE_VALS 2
#define UNSERIALIZE_ALL 3
#define SCORE_DECODE_NONE 0
#define SCORE_DECODE_INT 1
#define SCORE_DECODE_DOUBLE 2
#ifndef PHP_WIN32
#include <netinet/tcp.h> /* TCP_NODELAY */
#include <sys/socket.h> /* SO_KEEPALIVE */
#else
#include <winsock.h>
#endif
extern zend_class_entry *redis_ce;
extern zend_class_entry *redis_exception_ce;
extern int le_redis_pconnect;
static int redis_mbulk_reply_zipped_raw_variant(RedisSock *redis_sock, zval *zret, int count);
/* Register a persistent resource in a a way that works for every PHP 7 version. */
void redis_register_persistent_resource(zend_string *id, void *ptr, int le_id) {
#if PHP_VERSION_ID < 70300
zend_resource res;
res.type = le_id;
res.ptr = ptr;
zend_hash_str_update_mem(&EG(persistent_list), ZSTR_VAL(id), ZSTR_LEN(id), &res, sizeof(res));
#else
zend_register_persistent_resource(ZSTR_VAL(id), ZSTR_LEN(id), ptr, le_id);
#endif
}
static ConnectionPool *
redis_sock_get_connection_pool(RedisSock *redis_sock)
{
ConnectionPool *pool;
zend_resource *le;
zend_string *persistent_id;
/* Generate our unique pool id depending on configuration */
persistent_id = redis_pool_spprintf(redis_sock, INI_STR("redis.pconnect.pool_pattern"));
/* Return early if we can find the pool */
if ((le = zend_hash_find_ptr(&EG(persistent_list), persistent_id))) {
zend_string_release(persistent_id);
return le->ptr;
}
/* Create the pool and store it in our persistent list */
pool = pecalloc(1, sizeof(*pool), 1);
zend_llist_init(&pool->list, sizeof(php_stream *), NULL, 1);
redis_register_persistent_resource(persistent_id, pool, le_redis_pconnect);
zend_string_release(persistent_id);
return pool;
}
/* Helper to reselect the proper DB number when we reconnect */
static int reselect_db(RedisSock *redis_sock) {
char *cmd, *response;
int cmd_len, response_len;
cmd_len = redis_spprintf(redis_sock, NULL, &cmd, "SELECT", "d",
redis_sock->dbNumber);
if (redis_sock_write(redis_sock, cmd, cmd_len) < 0) {
efree(cmd);
return -1;
}
efree(cmd);
if ((response = redis_sock_read(redis_sock, &response_len)) == NULL) {
return -1;
}
if (strncmp(response, "+OK", 3)) {
efree(response);
return -1;
}
efree(response);
return 0;
}
/* Append an AUTH command to a smart string if neccessary. This will either
* append the new style AUTH <user> <password>, old style AUTH <password>, or
* append no command at all. Function returns 1 if we appended a command
* and 0 otherwise. */
static int redis_sock_append_auth(RedisSock *redis_sock, smart_string *str) {
/* We need a password at least */
if (redis_sock->pass == NULL)
return 0;
REDIS_CMD_INIT_SSTR_STATIC(str, !!redis_sock->user + !!redis_sock->pass, "AUTH");
if (redis_sock->user)
redis_cmd_append_sstr_zstr(str, redis_sock->user);
redis_cmd_append_sstr_zstr(str, redis_sock->pass);
/* We appended a command */
return 1;
}
PHP_REDIS_API void
redis_sock_set_auth(RedisSock *redis_sock, zend_string *user, zend_string *pass)
{
/* Release existing user/pass */
redis_sock_free_auth(redis_sock);
/* Set new user/pass */
redis_sock->user = user ? zend_string_copy(user) : NULL;
redis_sock->pass = pass ? zend_string_copy(pass) : NULL;
}
PHP_REDIS_API void
redis_sock_set_auth_zval(RedisSock *redis_sock, zval *zv) {
zend_string *user, *pass;
if (redis_extract_auth_info(zv, &user, &pass) == FAILURE)
return;
redis_sock_set_auth(redis_sock, user, pass);
if (user) zend_string_release(user);
if (pass) zend_string_release(pass);
}
PHP_REDIS_API void
redis_sock_free_auth(RedisSock *redis_sock) {
if (redis_sock->user) {
zend_string_release(redis_sock->user);
redis_sock->user = NULL;
}
if (redis_sock->pass) {
zend_string_release(redis_sock->pass);
redis_sock->pass = NULL;
}
}
PHP_REDIS_API char *
redis_sock_auth_cmd(RedisSock *redis_sock, int *cmdlen) {
char *cmd;
/* AUTH requires at least a password */
if (redis_sock->pass == NULL)
return NULL;
if (redis_sock->user) {
*cmdlen = redis_spprintf(redis_sock, NULL, &cmd, "AUTH", "SS", redis_sock->user, redis_sock->pass);
} else {
*cmdlen = redis_spprintf(redis_sock, NULL, &cmd, "AUTH", "S", redis_sock->pass);
}
return cmd;
}
/* Send Redis AUTH and process response */
PHP_REDIS_API int redis_sock_auth(RedisSock *redis_sock) {
char *cmd, inbuf[4096];
int cmdlen;
size_t len;
if ((cmd = redis_sock_auth_cmd(redis_sock, &cmdlen)) == NULL)
return SUCCESS;
if (redis_sock_write(redis_sock, cmd, cmdlen) < 0) {
efree(cmd);
return FAILURE;
}
efree(cmd);
if (redis_sock_gets(redis_sock, inbuf, sizeof(inbuf) - 1, &len) < 0 || strncmp(inbuf, "+OK", 3)) {
return FAILURE;
}
return SUCCESS;
}
/* Helper function and macro to test a RedisSock error prefix. */
#define REDIS_SOCK_ERRCMP_STATIC(rs, s) redis_sock_errcmp(rs, s, sizeof(s)-1)
static int redis_sock_errcmp(RedisSock *redis_sock, const char *err, size_t errlen) {
return ZSTR_LEN(redis_sock->err) >= errlen &&
memcmp(ZSTR_VAL(redis_sock->err), err, errlen) == 0;
}
/* Helper function that will throw an exception for a small number of ERR codes
* returned by Redis. Typically we just return FALSE to the caller in the event
* of an ERROR reply, but for the following error types:
* 1) MASTERDOWN
* 2) AUTH
* 3) LOADING
*/
static void
redis_error_throw(RedisSock *redis_sock)
{
/* Short circuit if we have no redis_sock or any error */
if (redis_sock == NULL || redis_sock->err == NULL)
return;
/* Redis 6 decided to add 'ERR AUTH' which has a normal 'ERR' prefix
* but is actually an authentication error that we will want to throw
* an exception for, so just short circuit if this is any other 'ERR'
* prefixed error. */
if (REDIS_SOCK_ERRCMP_STATIC(redis_sock, "ERR") &&
!REDIS_SOCK_ERRCMP_STATIC(redis_sock, "ERR AUTH")) return;
/* We may want to flip this logic and check for MASTERDOWN, AUTH,
* and LOADING but that may have side effects (esp for things like
* Disque) */
if (!REDIS_SOCK_ERRCMP_STATIC(redis_sock, "NOSCRIPT") &&
!REDIS_SOCK_ERRCMP_STATIC(redis_sock, "NOQUORUM") &&
!REDIS_SOCK_ERRCMP_STATIC(redis_sock, "NOGOODSLAVE") &&
!REDIS_SOCK_ERRCMP_STATIC(redis_sock, "WRONGTYPE") &&
!REDIS_SOCK_ERRCMP_STATIC(redis_sock, "BUSYGROUP") &&
!REDIS_SOCK_ERRCMP_STATIC(redis_sock, "NOGROUP"))
{
REDIS_THROW_EXCEPTION(ZSTR_VAL(redis_sock->err), 0);
}
}
static int
read_mbulk_header(RedisSock *redis_sock, int *nelem)
{
char line[4096];
size_t len;
/* Throws exception on failure */
if (redis_sock_gets(redis_sock, line, sizeof(line) - 1, &len) < 0) {
return FAILURE;
}
if (*line != TYPE_MULTIBULK) {
if (*line == TYPE_ERR) {
redis_sock_set_err(redis_sock, line + 1, len - 1);
}
return FAILURE;
}
*nelem = atoi(line + 1);
return SUCCESS;
}
PHP_REDIS_API int
redis_check_eof(RedisSock *redis_sock, zend_bool no_retry, zend_bool no_throw)
{
unsigned int retry_index;
char *errmsg;
if (!redis_sock || !redis_sock->stream || redis_sock->status == REDIS_SOCK_STATUS_FAILED) {
if (!no_throw) {
REDIS_THROW_EXCEPTION( "Connection closed", 0);
}
return -1;
}
/* NOITCE: set errno = 0 here
*
* There is a bug in php socket stream to check liveness of a connection:
* if (0 >= recv(sock->socket, &buf, sizeof(buf), MSG_PEEK) && php_socket_errno() != EWOULDBLOCK) {
* alive = 0;
* }
* If last errno is EWOULDBLOCK and recv returns 0 because of connection closed, alive would not be
* set to 0. However, the connection is close indeed. The php_stream_eof is not reliable. This will
* cause a "read error on connection" exception when use a closed persistent connection.
*
* We work around this by set errno = 0 first.
*
* Bug fix of php: https://github.com/php/php-src/pull/1456
* */
errno = 0;
if (php_stream_eof(redis_sock->stream) == 0) {
/* Success */
return 0;
} else if (redis_sock->mode == MULTI || redis_sock->watching) {
errmsg = "Connection lost and socket is in MULTI/watching mode";
} else {
errmsg = "Connection lost";
redis_backoff_reset(&redis_sock->backoff);
for (retry_index = 0; !no_retry && retry_index < redis_sock->max_retries; ++retry_index) {
/* close existing stream before reconnecting */
if (redis_sock->stream) {
redis_sock_disconnect(redis_sock, 1);
}
/* Sleep based on our backoff algorithm */
zend_ulong delay = redis_backoff_compute(&redis_sock->backoff, retry_index);
if (delay != 0)
usleep(delay);
/* reconnect */
if (redis_sock_connect(redis_sock) == 0) {
/* check for EOF again. */
errno = 0;
if (php_stream_eof(redis_sock->stream) == 0) {
if (redis_sock_auth(redis_sock) != SUCCESS) {
errmsg = "AUTH failed while reconnecting";
break;
}
redis_sock->status = REDIS_SOCK_STATUS_READY;
/* If we're using a non-zero db, reselect it */
if (redis_sock->dbNumber && reselect_db(redis_sock) != 0) {
errmsg = "SELECT failed while reconnecting";
break;
}
/* Success */
return 0;
}
}
}
}
/* close stream and mark socket as failed */
redis_sock_disconnect(redis_sock, 1);
redis_sock->status = REDIS_SOCK_STATUS_FAILED;
if (!no_throw) {
REDIS_THROW_EXCEPTION( errmsg, 0);
}
return -1;
}
PHP_REDIS_API int
redis_sock_read_scan_reply(INTERNAL_FUNCTION_PARAMETERS, RedisSock *redis_sock,
REDIS_SCAN_TYPE type, zend_long *iter)
{
REDIS_REPLY_TYPE reply_type;
long reply_info;
char *p_iter;
/* Our response should have two multibulk replies */
if(redis_read_reply_type(redis_sock, &reply_type, &reply_info)<0
|| reply_type != TYPE_MULTIBULK || reply_info != 2)
{
return -1;
}
/* The BULK response iterator */
if(redis_read_reply_type(redis_sock, &reply_type, &reply_info)<0
|| reply_type != TYPE_BULK)
{
return -1;
}
/* Attempt to read the iterator */
if(!(p_iter = redis_sock_read_bulk_reply(redis_sock, reply_info))) {
return -1;
}
/* Push the iterator out to the caller */
*iter = atol(p_iter);
efree(p_iter);
/* Read our actual keys/members/etc differently depending on what kind of
scan command this is. They all come back in slightly different ways */
switch(type) {
case TYPE_SCAN:
return redis_mbulk_reply_raw(INTERNAL_FUNCTION_PARAM_PASSTHRU,
redis_sock, NULL, NULL);
case TYPE_SSCAN:
return redis_sock_read_multibulk_reply(
INTERNAL_FUNCTION_PARAM_PASSTHRU, redis_sock, NULL, NULL);
case TYPE_ZSCAN:
return redis_mbulk_reply_zipped_keys_dbl(INTERNAL_FUNCTION_PARAM_PASSTHRU,
redis_sock, NULL, NULL);
case TYPE_HSCAN:
return redis_mbulk_reply_zipped_vals(INTERNAL_FUNCTION_PARAM_PASSTHRU,
redis_sock, NULL, NULL);
default:
return -1;
}
}
PHP_REDIS_API int redis_subscribe_response(INTERNAL_FUNCTION_PARAMETERS,
RedisSock *redis_sock, zval *z_tab,
void *ctx)
{
subscribeContext *sctx = (subscribeContext*)ctx;
zval *z_tmp, z_resp;
// Consume response(s) from subscribe, which will vary on argc
while(sctx->argc--) {
if (!redis_sock_read_multibulk_reply_zval(
INTERNAL_FUNCTION_PARAM_PASSTHRU, redis_sock, &z_resp)
) {
efree(sctx);
return -1;
}
// We'll need to find the command response
if ((z_tmp = zend_hash_index_find(Z_ARRVAL(z_resp), 0)) == NULL) {
zval_dtor(&z_resp);
efree(sctx);
return -1;
}
// Make sure the command response matches the command we called
if(strcasecmp(Z_STRVAL_P(z_tmp), sctx->kw) !=0) {
zval_dtor(&z_resp);
efree(sctx);
return -1;
}
zval_dtor(&z_resp);
}
zval z_ret, z_args[4];
sctx->cb.retval = &z_ret;
sctx->cb.params = z_args;
/* Multibulk response, {[pattern], type, channel, payload } */
while(1) {
zval *z_type, *z_chan, *z_pat = NULL, *z_data;
HashTable *ht_tab;
int tab_idx=1, is_pmsg;
if (!redis_sock_read_multibulk_reply_zval(
INTERNAL_FUNCTION_PARAM_PASSTHRU, redis_sock, &z_resp)) break;
ht_tab = Z_ARRVAL(z_resp);
if ((z_type = zend_hash_index_find(ht_tab, 0)) == NULL ||
Z_TYPE_P(z_type) != IS_STRING
) {
break;
}
// Check for message or pmessage
if(!strncmp(Z_STRVAL_P(z_type), "message", 7) ||
!strncmp(Z_STRVAL_P(z_type), "pmessage", 8))
{
is_pmsg = *Z_STRVAL_P(z_type)=='p';
} else {
break;
}
// Extract pattern if it's a pmessage
if(is_pmsg) {
if ((z_pat = zend_hash_index_find(ht_tab, tab_idx++)) == NULL) {
break;
}
}
// Extract channel and data
if ((z_chan = zend_hash_index_find(ht_tab, tab_idx++)) == NULL ||
(z_data = zend_hash_index_find(ht_tab, tab_idx++)) == NULL
) {
break;
}
// Different args for SUBSCRIBE and PSUBSCRIBE
z_args[0] = *getThis();
if(is_pmsg) {
z_args[1] = *z_pat;
z_args[2] = *z_chan;
z_args[3] = *z_data;
} else {
z_args[1] = *z_chan;
z_args[2] = *z_data;
}
// Set arg count
sctx->cb.param_count = tab_idx;
// Execute callback
if(zend_call_function(&(sctx->cb), &(sctx->cb_cache))
==FAILURE)
{
break;
}
// If we have a return value free it
zval_ptr_dtor(&z_ret);
zval_dtor(&z_resp);
}
// This is an error state, clean up
zval_dtor(&z_resp);
efree(sctx);
return -1;
}
PHP_REDIS_API int redis_unsubscribe_response(INTERNAL_FUNCTION_PARAMETERS,
RedisSock *redis_sock, zval *z_tab,
void *ctx)
{
subscribeContext *sctx = (subscribeContext*)ctx;
zval *z_chan, zv, *z_ret = &zv, z_resp;
int i;
array_init(z_ret);
for (i = 0; i < sctx->argc; i++) {
if (!redis_sock_read_multibulk_reply_zval(
INTERNAL_FUNCTION_PARAM_PASSTHRU, redis_sock, &z_resp) ||
(z_chan = zend_hash_index_find(Z_ARRVAL(z_resp), 1)) == NULL
) {
zval_dtor(z_ret);
return -1;
}
add_assoc_bool(z_ret, Z_STRVAL_P(z_chan), 1);
zval_dtor(&z_resp);
}
efree(sctx);
RETVAL_ZVAL(z_ret, 0, 1);
// Success
return 0;
}
PHP_REDIS_API zval *
redis_sock_read_multibulk_reply_zval(INTERNAL_FUNCTION_PARAMETERS,
RedisSock *redis_sock, zval *z_tab)
{
int numElems;
if (read_mbulk_header(redis_sock, &numElems) < 0) {
ZVAL_NULL(z_tab);
return NULL;
}
array_init(z_tab);
redis_mbulk_reply_loop(redis_sock, z_tab, numElems, UNSERIALIZE_ALL);
return z_tab;
}
/**
* redis_sock_read_bulk_reply
*/
PHP_REDIS_API char *
redis_sock_read_bulk_reply(RedisSock *redis_sock, int bytes)
{
int offset = 0, nbytes;
char *reply;
size_t got;
if (-1 == bytes || -1 == redis_check_eof(redis_sock, 1, 0)) {
return NULL;
}
nbytes = bytes + 2;
/* Allocate memory for string */
reply = emalloc(nbytes);
/* Consume bulk string */
while (offset < nbytes) {
got = php_stream_read(redis_sock->stream, reply + offset, nbytes - offset);
if (got == 0 && php_stream_eof(redis_sock->stream)) break;
offset += got;
}
/* Protect against reading too few bytes */
if (offset < nbytes) {
/* Error or EOF */
REDIS_THROW_EXCEPTION("socket error on read socket", 0);
efree(reply);
return NULL;
}
/* Null terminate reply string */
reply[bytes] = '\0';
return reply;
}
/**
* redis_sock_read
*/
PHP_REDIS_API char *
redis_sock_read(RedisSock *redis_sock, int *buf_len)
{
char inbuf[4096];
size_t len;
*buf_len = 0;
if (redis_sock_gets(redis_sock, inbuf, sizeof(inbuf) - 1, &len) < 0) {
return NULL;
}
switch(inbuf[0]) {
case '-':
redis_sock_set_err(redis_sock, inbuf+1, len);
/* Filter our ERROR through the few that should actually throw */
redis_error_throw(redis_sock);
return NULL;
case '$':
*buf_len = atoi(inbuf + 1);
return redis_sock_read_bulk_reply(redis_sock, *buf_len);
case '*':
/* For null multi-bulk replies (like timeouts from brpoplpush): */
if(memcmp(inbuf + 1, "-1", 2) == 0) {
return NULL;
}
REDIS_FALLTHROUGH;
case '+':
case ':':
/* Single Line Reply */
/* +OK or :123 */
if (len > 1) {
*buf_len = len;
return estrndup(inbuf, *buf_len);
}
REDIS_FALLTHROUGH;
default:
zend_throw_exception_ex(redis_exception_ce, 0,
"protocol error, got '%c' as reply type byte\n",
inbuf[0]
);
}
return NULL;
}
/* A simple union to store the various arg types we might handle in our
* redis_spprintf command formatting function */
union resparg {
char *str;
zend_string *zstr;
zval *zv;
int ival;
long lval;
double dval;
};
static zend_string *redis_hash_auth(zend_string *user, zend_string *pass) {
zend_string *algo, *hex;
smart_str salted = {0};
const php_hash_ops *ops;
unsigned char *digest;
void *ctx;
/* No op if there is not username/password */
if (user == NULL && pass == NULL)
return NULL;
/* Theoretically inpossible but check anyway */
algo = zend_string_init("sha256", sizeof("sha256") - 1, 0);
if ((ops = redis_hash_fetch_ops(algo)) == NULL) {
zend_string_release(algo);
return NULL;
}
/* Hash username + password with our salt global */
smart_str_alloc(&salted, 256, 0);
if (user) smart_str_append_ex(&salted, user, 0);
if (pass) smart_str_append_ex(&salted, pass, 0);
smart_str_appendl_ex(&salted, REDIS_G(salt), sizeof(REDIS_G(salt)), 0);
ctx = emalloc(ops->context_size);
#if PHP_VERSION_ID >= 80100
ops->hash_init(ctx,NULL);
#else
ops->hash_init(ctx);
#endif
ops->hash_update(ctx, (const unsigned char *)ZSTR_VAL(salted.s), ZSTR_LEN(salted.s));
digest = emalloc(ops->digest_size);
ops->hash_final(digest, ctx);
efree(ctx);
hex = zend_string_safe_alloc(ops->digest_size, 2, 0, 0);
php_hash_bin2hex(ZSTR_VAL(hex), digest, ops->digest_size);
ZSTR_VAL(hex)[2 * ops->digest_size] = 0;
efree(digest);
zend_string_release(algo);
smart_str_free(&salted);
return hex;
}
static void append_auth_hash(smart_str *dst, zend_string *user, zend_string *pass) {
zend_string *s;
if ((s = redis_hash_auth(user, pass)) != NULL) {
smart_str_appendc(dst, ':');
smart_str_append_ex(dst, s, 0);
zend_string_release(s);
}
}
/* A printf like function to generate our connection pool hash value. */
PHP_REDIS_API zend_string *
redis_pool_spprintf(RedisSock *redis_sock, char *fmt, ...) {
smart_str str = {0};
smart_str_alloc(&str, 128, 0);
/* We always include phpredis_<host>:<port> */
smart_str_appendl(&str, "phpredis_", sizeof("phpredis_") - 1);
smart_str_append_ex(&str, redis_sock->host, 0);
smart_str_appendc(&str, ':');
smart_str_append_long(&str, (zend_long)redis_sock->port);
/* Short circuit if we don't have a pattern */
if (fmt == NULL) {
smart_str_0(&str);
return str.s;
}
while (*fmt) {
switch (*fmt) {
case 'i':
if (redis_sock->persistent_id) {
smart_str_appendc(&str, ':');
smart_str_append_ex(&str, redis_sock->persistent_id, 0);
}
break;
case 'u':
smart_str_appendc(&str, ':');
if (redis_sock->user) {
smart_str_append_ex(&str, redis_sock->user, 0);
}
break;
case 'p':
append_auth_hash(&str, NULL, redis_sock->pass);
break;
case 'a':
append_auth_hash(&str, redis_sock->user, redis_sock->pass);
break;
default:
/* Maybe issue a php_error_docref? */
break;
}
fmt++;
}
smart_str_0(&str);
return str.s;
}
/* A printf like method to construct a Redis RESP command. It has been extended
* to take a few different format specifiers that are convenient to phpredis.
*
* s - C string followed by length as a
* S - Pointer to a zend_string
* k - Same as 's' but the value will be prefixed if phpredis is set up do do
* that and the working slot will be set if it has been passed.
* v - A z_val which will be serialized if phpredis is configured to serialize.
* f - A double value
* F - Alias to 'f'
* i - An integer
* d - Alias to 'i'
* l - A long
* L - Alias to 'l'
*/
PHP_REDIS_API int
redis_spprintf(RedisSock *redis_sock, short *slot, char **ret, char *kw, char *fmt, ...) {
smart_string cmd = {0};
va_list ap;
union resparg arg;
char *dup;
int argfree;
size_t arglen;
va_start(ap, fmt);
/* Header */
redis_cmd_init_sstr(&cmd, strlen(fmt), kw, strlen(kw));
while (*fmt) {
switch (*fmt) {
case 's':
arg.str = va_arg(ap, char*);
arglen = va_arg(ap, size_t);
redis_cmd_append_sstr(&cmd, arg.str, arglen);
break;
case 'S':
arg.zstr = va_arg(ap, zend_string*);
redis_cmd_append_sstr(&cmd, ZSTR_VAL(arg.zstr), ZSTR_LEN(arg.zstr));
break;
case 'k':
arg.str = va_arg(ap, char*);
arglen = va_arg(ap, size_t);
argfree = redis_key_prefix(redis_sock, &arg.str, &arglen);
redis_cmd_append_sstr(&cmd, arg.str, arglen);
if (slot) *slot = cluster_hash_key(arg.str, arglen);
if (argfree) efree(arg.str);
break;
case 'v':
arg.zv = va_arg(ap, zval*);
argfree = redis_pack(redis_sock, arg.zv, &dup, &arglen);
redis_cmd_append_sstr(&cmd, dup, arglen);
if (argfree) efree(dup);
break;
case 'f':
case 'F':
arg.dval = va_arg(ap, double);
redis_cmd_append_sstr_dbl(&cmd, arg.dval);
break;
case 'i':
case 'd':
arg.ival = va_arg(ap, int);
redis_cmd_append_sstr_int(&cmd, arg.ival);
break;
case 'l':
case 'L':
arg.lval = va_arg(ap, long);
redis_cmd_append_sstr_long(&cmd, arg.lval);
break;
}
fmt++;
}
/* varargs cleanup */
va_end(ap);
/* Null terminate */
smart_string_0(&cmd);
/* Push command string, return length */
*ret = cmd.c;
return cmd.len;
}
/*
* Given a smart string, number of arguments, a keyword, and the length of the keyword
* initialize our smart string with the proper Redis header for the command to follow
*/
int redis_cmd_init_sstr(smart_string *str, int num_args, char *keyword, int keyword_len) {
smart_string_appendc(str, '*');
smart_string_append_long(str, num_args + 1);
smart_string_appendl(str, _NL, sizeof(_NL) -1);
smart_string_appendc(str, '$');
smart_string_append_long(str, keyword_len);
smart_string_appendl(str, _NL, sizeof(_NL) - 1);
smart_string_appendl(str, keyword, keyword_len);
smart_string_appendl(str, _NL, sizeof(_NL) - 1);
return str->len;
}
/*
* Append a command sequence to a smart_string
*/
int redis_cmd_append_sstr(smart_string *str, char *append, int append_len) {
smart_string_appendc(str, '$');
smart_string_append_long(str, append_len);
smart_string_appendl(str, _NL, sizeof(_NL) - 1);
smart_string_appendl(str, append, append_len);
smart_string_appendl(str, _NL, sizeof(_NL) - 1);
/* Return our new length */
return str->len;
}
/*
* Append an integer to a smart string command
*/
int redis_cmd_append_sstr_int(smart_string *str, int append) {
char int_buf[32];
int int_len = snprintf(int_buf, sizeof(int_buf), "%d", append);
return redis_cmd_append_sstr(str, int_buf, int_len);
}
/*
* Append a long to a smart string command
*/
int redis_cmd_append_sstr_long(smart_string *str, long append) {
char long_buf[32];
int long_len = snprintf(long_buf, sizeof(long_buf), "%ld", append);
return redis_cmd_append_sstr(str, long_buf, long_len);
}
/*
* Append a 64-bit integer to our command
*/
int redis_cmd_append_sstr_i64(smart_string *str, int64_t append) {
char nbuf[64];
int len = snprintf(nbuf, sizeof(nbuf), "%" PRId64, append);
return redis_cmd_append_sstr(str, nbuf, len);
}
/*
* Append a double to a smart string command
*/
int
redis_cmd_append_sstr_dbl(smart_string *str, double value)
{
char tmp[64], *p;
int len;
/* Convert to string */
len = snprintf(tmp, sizeof(tmp), "%.17g", value);
/* snprintf depends on locale, replace comma with point */
if ((p = strchr(tmp, ',')) != NULL) *p = '.';
// Append the string
return redis_cmd_append_sstr(str, tmp, len);
}
/* Append a zval to a redis command. The value will be serialized if we are
* configured to do that */
int redis_cmd_append_sstr_zval(smart_string *str, zval *z, RedisSock *redis_sock) {
char *val;
size_t vallen;
int valfree, retval;
valfree = redis_pack(redis_sock, z, &val, &vallen);
retval = redis_cmd_append_sstr(str, val, vallen);
if (valfree) efree(val);
return retval;
}
int redis_cmd_append_sstr_zstr(smart_string *str, zend_string *zstr) {
return redis_cmd_append_sstr(str, ZSTR_VAL(zstr), ZSTR_LEN(zstr));
}
/* Append a string key to a redis command. This function takes care of prefixing the key
* for the caller and setting the slot argument if it is passed non null */
int redis_cmd_append_sstr_key(smart_string *str, char *key, size_t len, RedisSock *redis_sock, short *slot) {
int valfree, retval;
valfree = redis_key_prefix(redis_sock, &key, &len);
if (slot) *slot = cluster_hash_key(key, len);
retval = redis_cmd_append_sstr(str, key, len);
if (valfree) efree(key);
return retval;
}
/* Append an array key to a redis smart string command. This function
* handles the boilerplate conditionals around string or integer keys */