As I posted before I'm totally new to C.
In bash i can use
IP = "`wget -O - -q icanhazip.com`"
echo $IP=
and it returns my ip.
However I'm trying hard to get this via curl although I don't quite understand how it works yet. I determined it is creating the ip.txt file but doesn't appear to be writing to it.
I also tried setting the CURLOPT_WRITEFUNCTION to NULL as suggested in the curl manual, this was supposed to send to stdout but nothing happened.
I checked the file read and that is OK if I manually enter some data.
Can someone help.
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <curl/curl.h>
char ipresult[128];
FILE *fp;
////////////////////////////////////////////////////
static size_t write_data(void *ptr, size_t size, size_t nmemb, void *stream)
{
int written = fwrite(ptr, size, nmemb, (FILE *)stream);
return written;
}
int main(int argc, char **argv){
{
CURL *curl;
curl = curl_easy_init();
if(curl) {
fp =(FILE *) fopen("/tmp/ip.txt","w");
curl_easy_setopt(curl, CURLOPT_URL, "icanhazip.com");
curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, write_data);
curl_easy_setopt(curl, CURLOPT_WRITEDATA, fp);
curl_easy_cleanup(curl);
fclose(fp);
}
{
fp =(FILE *) fopen("/tmp/ip.txt","r");
fgets(ipresult,sizeof ipresult,fp);
fclose(fp);
printf("%s",ipresult);
}
return (0);
}
}