You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
134 lines
2.8 KiB
C
134 lines
2.8 KiB
C
#include "json.h"
|
|
#include "common.h"
|
|
#include "cmd.h"
|
|
#include "http.h"
|
|
|
|
#include <string.h>
|
|
#include <hiredis/hiredis.h>
|
|
#include <hiredis/async.h>
|
|
|
|
static json_t *
|
|
json_wrap_redis_reply(const struct cmd *cmd, const redisReply *r);
|
|
|
|
void
|
|
json_reply(redisAsyncContext *c, void *r, void *privdata) {
|
|
|
|
redisReply *reply = r;
|
|
struct cmd *cmd = privdata;
|
|
json_t *j;
|
|
char *jstr;
|
|
(void)c;
|
|
|
|
if(cmd == NULL) {
|
|
/* broken connection */
|
|
return;
|
|
}
|
|
|
|
if (reply == NULL) {
|
|
http_send_reply(cmd->client, 404, "Not Found", NULL, 0);
|
|
return;
|
|
}
|
|
|
|
/* encode redis reply as JSON */
|
|
j = json_wrap_redis_reply(cmd, r);
|
|
|
|
/* get JSON as string, possibly with JSONP wrapper */
|
|
jstr = json_string_output(j, cmd);
|
|
|
|
/* send reply */
|
|
format_send_reply(cmd, jstr, strlen(jstr), "application/json");
|
|
|
|
/* cleanup */
|
|
json_decref(j);
|
|
free(jstr);
|
|
}
|
|
|
|
static json_t *
|
|
json_wrap_redis_reply(const struct cmd *cmd, const redisReply *r) {
|
|
|
|
unsigned int i;
|
|
json_t *jlist, *jroot = json_object(); /* that's what we return */
|
|
|
|
|
|
/* copy verb, as jansson only takes a char* but not its length. */
|
|
char *verb;
|
|
if(cmd->count) {
|
|
verb = calloc(cmd->argv_len[0]+1, 1);
|
|
memcpy(verb, cmd->argv[0], cmd->argv_len[0]);
|
|
} else {
|
|
verb = strdup("");
|
|
}
|
|
|
|
switch(r->type) {
|
|
case REDIS_REPLY_STATUS:
|
|
case REDIS_REPLY_ERROR:
|
|
jlist = json_array();
|
|
json_array_append_new(jlist,
|
|
r->type == REDIS_REPLY_ERROR ? json_false() : json_true());
|
|
json_array_append_new(jlist, json_string(r->str));
|
|
json_object_set_new(jroot, verb, jlist);
|
|
break;
|
|
|
|
case REDIS_REPLY_STRING:
|
|
json_object_set_new(jroot, verb, json_string(r->str));
|
|
break;
|
|
|
|
case REDIS_REPLY_INTEGER:
|
|
json_object_set_new(jroot, verb, json_integer(r->integer));
|
|
break;
|
|
|
|
case REDIS_REPLY_ARRAY:
|
|
jlist = json_array();
|
|
for(i = 0; i < r->elements; ++i) {
|
|
redisReply *e = r->element[i];
|
|
switch(e->type) {
|
|
case REDIS_REPLY_STRING:
|
|
json_array_append_new(jlist, json_string(e->str));
|
|
break;
|
|
case REDIS_REPLY_INTEGER:
|
|
json_array_append_new(jlist, json_integer(e->integer));
|
|
break;
|
|
default:
|
|
json_array_append_new(jlist, json_null());
|
|
break;
|
|
}
|
|
}
|
|
json_object_set_new(jroot, verb, jlist);
|
|
break;
|
|
|
|
default:
|
|
json_object_set_new(jroot, verb, json_null());
|
|
break;
|
|
}
|
|
|
|
free(verb);
|
|
return jroot;
|
|
}
|
|
|
|
|
|
char *
|
|
json_string_output(json_t *j, struct cmd *cmd) {
|
|
|
|
char *json_reply = json_dumps(j, JSON_COMPACT);
|
|
|
|
/* check for JSONP */
|
|
if(cmd->client->qs_jsonp.s) {
|
|
|
|
size_t json_len = strlen(json_reply);
|
|
size_t val_len = cmd->client->qs_jsonp.sz;
|
|
size_t ret_len = val_len + 1 + json_len + 3;
|
|
char *ret = calloc(1 + ret_len, 1);
|
|
|
|
memcpy(ret, cmd->client->qs_jsonp.s, val_len);
|
|
ret[val_len]='(';
|
|
memcpy(ret + val_len + 1, json_reply, json_len);
|
|
memcpy(ret + val_len + 1 + json_len, ");\n", 3);
|
|
free(json_reply);
|
|
|
|
return ret;
|
|
}
|
|
|
|
return json_reply;
|
|
}
|
|
|