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library.c
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#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_LZF
#include <lzf.h>
#endif
#include <zend_exceptions.h>
#include "php_redis.h"
#include "library.h"
#include "redis_commands.h"
#include <ext/standard/php_rand.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>
# if PHP_MAJOR_VERSION == 5 && PHP_MINOR_VERSION <= 4
/* This proto is available from 5.5 on only */
PHP_REDIS_API int usleep(unsigned int useconds);
# endif
#endif
#if (PHP_MAJOR_VERSION < 7)
int (*_add_next_index_string)(zval *, const char *, int) = &add_next_index_string;
int (*_add_next_index_stringl)(zval *, const char *, uint, int) = &add_next_index_stringl;
int (*_add_assoc_bool_ex)(zval *, const char *, uint, int) = &add_assoc_bool_ex;
int (*_add_assoc_long_ex)(zval *, const char *, uint, long) = &add_assoc_long_ex;
int (*_add_assoc_double_ex)(zval *, const char *, uint, double) = &add_assoc_double_ex;
int (*_add_assoc_string_ex)(zval *, const char *, uint, char *, int) = &add_assoc_string_ex;
int (*_add_assoc_stringl_ex)(zval *, const char *, uint, char *, uint, int) = &add_assoc_stringl_ex;
int (*_add_assoc_zval_ex)(zval *, const char *, uint, zval *) = &add_assoc_zval_ex;
void (*_php_var_serialize)(smart_str *, zval **, php_serialize_data_t * TSRMLS_DC) = &php_var_serialize;
int (*_php_var_unserialize)(zval **, const unsigned char **, const unsigned char *, php_unserialize_data_t * TSRMLS_DC) = &php_var_unserialize;
#endif
extern zend_class_entry *redis_ce;
extern zend_class_entry *redis_exception_ce;
/* Helper to reselect the proper DB number when we reconnect */
static int reselect_db(RedisSock *redis_sock TSRMLS_DC) {
char *cmd, *response;
int cmd_len, response_len;
cmd_len = redis_spprintf(redis_sock, NULL TSRMLS_CC, &cmd, "SELECT", "d",
redis_sock->dbNumber);
if (redis_sock_write(redis_sock, cmd, cmd_len TSRMLS_CC) < 0) {
efree(cmd);
return -1;
}
efree(cmd);
if ((response = redis_sock_read(redis_sock, &response_len TSRMLS_CC)) == NULL) {
return -1;
}
if (strncmp(response, "+OK", 3)) {
efree(response);
return -1;
}
efree(response);
return 0;
}
/* Helper to resend AUTH <password> in the case of a reconnect */
static int resend_auth(RedisSock *redis_sock TSRMLS_DC) {
char *cmd, *response;
int cmd_len, response_len;
cmd_len = redis_spprintf(redis_sock, NULL TSRMLS_CC, &cmd, "AUTH", "s",
ZSTR_VAL(redis_sock->auth), ZSTR_LEN(redis_sock->auth));
if (redis_sock_write(redis_sock, cmd, cmd_len TSRMLS_CC) < 0) {
efree(cmd);
return -1;
}
efree(cmd);
response = redis_sock_read(redis_sock, &response_len TSRMLS_CC);
if (response == NULL) {
return -1;
}
if (strncmp(response, "+OK", 3)) {
efree(response);
return -1;
}
efree(response);
return 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 TSRMLS_DC)
{
if (redis_sock != NULL && redis_sock->err != NULL &&
memcmp(ZSTR_VAL(redis_sock->err), "ERR", sizeof("ERR") - 1) != 0 &&
memcmp(ZSTR_VAL(redis_sock->err), "NOSCRIPT", sizeof("NOSCRIPT") - 1) != 0 &&
memcmp(ZSTR_VAL(redis_sock->err), "WRONGTYPE", sizeof("WRONGTYPE") - 1) != 0
) {
zend_throw_exception(redis_exception_ce, ZSTR_VAL(redis_sock->err), 0 TSRMLS_CC);
}
}
PHP_REDIS_API void redis_stream_close(RedisSock *redis_sock TSRMLS_DC) {
if (!redis_sock->persistent) {
php_stream_close(redis_sock->stream);
} else {
php_stream_pclose(redis_sock->stream);
}
}
PHP_REDIS_API int
redis_check_eof(RedisSock *redis_sock, int no_throw TSRMLS_DC)
{
int count;
if (!redis_sock->stream) {
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) {
REDIS_STREAM_CLOSE_MARK_FAILED(redis_sock);
if (!no_throw) {
zend_throw_exception(redis_exception_ce,
"Connection lost and socket is in MULTI/watching mode",
0 TSRMLS_CC);
}
return -1;
}
/* TODO: configurable max retry count */
for (count = 0; count < 10; ++count) {
/* close existing stream before reconnecting */
if (redis_sock->stream) {
redis_stream_close(redis_sock TSRMLS_CC);
redis_sock->stream = NULL;
}
// Wait for a while before trying to reconnect
if (redis_sock->retry_interval) {
// Random factor to avoid having several (or many) concurrent connections trying to reconnect at the same time
long retry_interval = (count ? redis_sock->retry_interval : (php_rand(TSRMLS_C) % redis_sock->retry_interval));
usleep(retry_interval);
}
/* reconnect */
if (redis_sock_connect(redis_sock TSRMLS_CC) == 0) {
/* check for EOF again. */
errno = 0;
if (php_stream_eof(redis_sock->stream) == 0) {
/* If we're using a password, attempt a reauthorization */
if (redis_sock->auth && resend_auth(redis_sock TSRMLS_CC) != 0) {
break;
}
/* If we're using a non-zero db, reselect it */
if (redis_sock->dbNumber && reselect_db(redis_sock TSRMLS_CC) != 0) {
break;
}
/* Success */
return 0;
}
}
}
/* close stream if still here */
if (redis_sock->stream) {
REDIS_STREAM_CLOSE_MARK_FAILED(redis_sock);
}
if (!no_throw) {
zend_throw_exception(redis_exception_ce, "Connection lost", 0 TSRMLS_CC);
}
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 TSRMLS_CC)<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 TSRMLS_CC)<0
|| reply_type != TYPE_BULK)
{
return -1;
}
/* Attempt to read the iterator */
if(!(p_iter = redis_sock_read_bulk_reply(redis_sock, reply_info TSRMLS_CC))) {
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);
}
#if (PHP_MAJOR_VERSION < 7)
zval *z_ret, **z_args[4];
sctx->cb.retval_ptr_ptr = &z_ret;
#else
zval z_ret, z_args[4];
sctx->cb.retval = &z_ret;
#endif
sctx->cb.params = z_args;
sctx->cb.no_separation = 0;
/* 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
#if (PHP_MAJOR_VERSION < 7)
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;
}
#else
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;
}
#endif
// Set arg count
sctx->cb.param_count = tab_idx;
// Execute callback
if(zend_call_function(&(sctx->cb), &(sctx->cb_cache) TSRMLS_CC)
==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)
{
char inbuf[4096];
int numElems;
size_t len;
ZVAL_NULL(z_tab);
if (redis_sock_gets(redis_sock, inbuf, sizeof(inbuf) - 1, &len TSRMLS_CC) < 0) {
return NULL;
}
if(inbuf[0] != '*') {
return NULL;
}
numElems = atoi(inbuf+1);
array_init(z_tab);
redis_mbulk_reply_loop(INTERNAL_FUNCTION_PARAM_PASSTHRU, 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 TSRMLS_DC)
{
int offset = 0;
char *reply, c[2];
size_t got;
if (-1 == bytes || -1 == redis_check_eof(redis_sock, 0 TSRMLS_CC)) {
return NULL;
}
/* Allocate memory for string */
reply = emalloc(bytes+1);
/* Consume bulk string */
while(offset < bytes) {
got = php_stream_read(redis_sock->stream, reply + offset, bytes-offset);
if (got == 0) break;
offset += got;
}
/* Protect against reading too few bytes */
if (offset < bytes) {
/* Error or EOF */
zend_throw_exception(redis_exception_ce,
"socket error on read socket", 0 TSRMLS_CC);
efree(reply);
return NULL;
}
/* Consume \r\n and null terminate reply string */
php_stream_read(redis_sock->stream, c, 2);
reply[bytes] = '\0';
return reply;
}
/**
* redis_sock_read
*/
PHP_REDIS_API char *
redis_sock_read(RedisSock *redis_sock, int *buf_len TSRMLS_DC)
{
char inbuf[4096];
size_t len;
*buf_len = 0;
if (redis_sock_gets(redis_sock, inbuf, sizeof(inbuf) - 1, &len TSRMLS_CC) < 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 TSRMLS_CC);
return NULL;
case '$':
*buf_len = atoi(inbuf + 1);
return redis_sock_read_bulk_reply(redis_sock, *buf_len TSRMLS_CC);
case '*':
/* For null multi-bulk replies (like timeouts from brpoplpush): */
if(memcmp(inbuf + 1, "-1", 2) == 0) {
return NULL;
}
/* fall through */
case '+':
case ':':
/* Single Line Reply */
/* +OK or :123 */
if (len > 1) {
*buf_len = len;
return estrndup(inbuf, *buf_len);
}
default:
zend_throw_exception_ex(
redis_exception_ce,
0 TSRMLS_CC,
"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;
};
/* A printf like method to construct a Redis RESP command. It has been extended
* to take a few different format specifiers that are convienient to phpredis.
*
* s - C string followed by length as a strlen_t
* 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 TSRMLS_DC, char **ret, char *kw, char *fmt, ...) {
smart_string cmd = {0};
va_list ap;
union resparg arg;
char *dup;
int argfree;
strlen_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, strlen_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, strlen_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 TSRMLS_CC);
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 double to a smart string command
*/
int
redis_cmd_append_sstr_dbl(smart_string *str, double value)
{
char tmp[64];
int len, retval;
/* Convert to string */
len = snprintf(tmp, sizeof(tmp), "%.16g", value);
// Append the string
retval = redis_cmd_append_sstr(str, tmp, len);
/* Return new length */
return retval;
}
/* 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 TSRMLS_DC) {
char *val;
strlen_t vallen;
int valfree, retval;
valfree = redis_pack(redis_sock, z, &val, &vallen TSRMLS_CC);
retval = redis_cmd_append_sstr(str, val, vallen);
if (valfree) efree(val);
return retval;
}
/* 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, strlen_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;
}
PHP_REDIS_API void redis_bulk_double_response(INTERNAL_FUNCTION_PARAMETERS, RedisSock *redis_sock, zval *z_tab, void *ctx) {
char *response;
int response_len;
double ret;
if ((response = redis_sock_read(redis_sock, &response_len TSRMLS_CC)) == NULL) {
if (IS_ATOMIC(redis_sock)) {
RETURN_FALSE;
}
add_next_index_bool(z_tab, 0);
return;
}
ret = atof(response);
efree(response);
if (IS_ATOMIC(redis_sock)) {
RETURN_DOUBLE(ret);
} else {
add_next_index_double(z_tab, ret);
}
}
PHP_REDIS_API void redis_type_response(INTERNAL_FUNCTION_PARAMETERS, RedisSock *redis_sock, zval *z_tab, void *ctx) {
char *response;
int response_len;
long l;
if ((response = redis_sock_read(redis_sock, &response_len TSRMLS_CC)) == NULL) {
if (IS_ATOMIC(redis_sock)) {
RETURN_FALSE;
}
add_next_index_bool(z_tab, 0);
return;
}
if (strncmp(response, "+string", 7) == 0) {
l = REDIS_STRING;
} else if (strncmp(response, "+set", 4) == 0){
l = REDIS_SET;
} else if (strncmp(response, "+list", 5) == 0){
l = REDIS_LIST;
} else if (strncmp(response, "+zset", 5) == 0){
l = REDIS_ZSET;
} else if (strncmp(response, "+hash", 5) == 0){
l = REDIS_HASH;
} else {
l = REDIS_NOT_FOUND;
}
efree(response);
if (IS_ATOMIC(redis_sock)) {
RETURN_LONG(l);
} else {
add_next_index_long(z_tab, l);
}
}
PHP_REDIS_API void redis_info_response(INTERNAL_FUNCTION_PARAMETERS, RedisSock *redis_sock, zval *z_tab, void *ctx) {
char *response;
int response_len;
zval zv = {{0}}, *z_ret = &zv;
/* Read bulk response */
if ((response = redis_sock_read(redis_sock, &response_len TSRMLS_CC)) == NULL) {
RETURN_FALSE;
}
/* Parse it into a zval array */
redis_parse_info_response(response, z_ret);
/* Free source response */
efree(response);
if (IS_ATOMIC(redis_sock)) {
RETVAL_ZVAL(z_ret, 0, 1);
} else {
add_next_index_zval(z_tab, z_ret);
}
}
PHP_REDIS_API void
redis_parse_info_response(char *response, zval *z_ret)
{
char *cur, *pos;
array_init(z_ret);
cur = response;
while(1) {
/* skip comments and empty lines */
if (*cur == '#' || *cur == '\r') {
if ((cur = strstr(cur, _NL)) == NULL) {
break;
}
cur += 2;
continue;
}
/* key */
if ((pos = strchr(cur, ':')) == NULL) {
break;
}
char *key = cur;
int key_len = pos - cur;
key[key_len] = '\0';
/* value */
cur = pos + 1;
if ((pos = strstr(cur, _NL)) == NULL) {
break;
}
char *value = cur;
int value_len = pos - cur;
value[value_len] = '\0';
double dval;
zend_long lval;
zend_uchar type = is_numeric_string(value, value_len, &lval, &dval, 0);
if (type == IS_LONG) {
add_assoc_long_ex(z_ret, key, key_len, lval);
} else if (type == IS_DOUBLE) {
add_assoc_double_ex(z_ret, key, key_len, dval);
} else {
add_assoc_stringl_ex(z_ret, key, key_len, value, value_len);
}
cur = pos + 2; /* \r, \n */
}
}
/*
* Specialized handling of the CLIENT LIST output so it comes out in a simple way for PHP userland code
* to handle.
*/
PHP_REDIS_API void redis_client_list_reply(INTERNAL_FUNCTION_PARAMETERS, RedisSock *redis_sock, zval *z_tab) {
char *resp;
int resp_len;
/* Make sure we can read the bulk response from Redis */
if ((resp = redis_sock_read(redis_sock, &resp_len TSRMLS_CC)) == NULL) {
RETURN_FALSE;
}
zval zv, *z_ret = &zv;
#if (PHP_MAJOR_VERSION < 7)
MAKE_STD_ZVAL(z_ret);
#endif
/* Parse it out */
redis_parse_client_list_response(resp, z_ret);
/* Free our response */
efree(resp);
/* Return or append depending if we're atomic */
if (IS_ATOMIC(redis_sock)) {
RETVAL_ZVAL(z_ret, 0, 1);
} else {
add_next_index_zval(z_tab, z_ret);
}
}
PHP_REDIS_API void
redis_parse_client_list_response(char *response, zval *z_ret)
{
char *p, *lpos, *kpos = NULL, *vpos = NULL, *p2, *key, *value;
int klen = 0, done = 0, is_numeric;
// Allocate memory for our response
array_init(z_ret);
/* Allocate memory for one user (there should be at least one, namely us!) */
zval zv, *z_sub_result = &zv;
#if (PHP_MAJOR_VERSION < 7)
ALLOC_INIT_ZVAL(z_sub_result);
#endif
array_init(z_sub_result);
// Pointers for parsing
p = response;
lpos = response;
/* While we've got more to parse */
while(!done) {
/* What character are we on */
switch(*p) {
/* We're done */
case '\0':
done = 1;
break;
/* \n, ' ' mean we can pull a k/v pair */
case '\n':
case ' ':
/* Grab our value */
vpos = lpos;
/* There is some communication error or Redis bug if we don't
have a key and value, but check anyway. */
if(kpos && vpos) {
/* Allocate, copy in our key */
key = estrndup(kpos, klen);
/* Allocate, copy in our value */
value = estrndup(lpos, p - lpos);
/* Treat numbers as numbers, strings as strings */
is_numeric = 1;
for(p2 = value; *p2; ++p2) {
if(*p2 < '0' || *p2 > '9') {
is_numeric = 0;
break;
}
}
/* Add as a long or string, depending */
if(is_numeric == 1) {
add_assoc_long(z_sub_result, key, atol(value));
} else {
add_assoc_string(z_sub_result, key, value);
}
efree(value);
// If we hit a '\n', then we can add this user to our list
if(*p == '\n') {
/* Add our user */
add_next_index_zval(z_ret, z_sub_result);
/* If we have another user, make another one */
if(*(p+1) != '\0') {
#if (PHP_MAJOR_VERSION < 7)
ALLOC_INIT_ZVAL(z_sub_result);
#endif
array_init(z_sub_result);
}
}
// Free our key
efree(key);
} else {
// Something is wrong
zval_dtor(z_ret);
ZVAL_BOOL(z_ret, 0);
return;
}
/* Move forward */
lpos = p + 1;
break;
/* We can pull the key and null terminate at our sep */
case '=':
/* Key, key length */
kpos = lpos;
klen = p - lpos;
/* Move forward */
lpos = p + 1;
break;
}