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#include <stdlib.h>
#include <string.h>
struct CStringLen
{
char const* ptr;
int len;
};
void *
hookup_new_userdata(char const* ptr, int len)
{
struct CStringLen *result = malloc(sizeof *result);
// The null/error case is handled in hookup_pem_passwd_cb
if (NULL != result) {
result->ptr = ptr;
result->len = len;
}
return result;
}
void
hookup_free_userdata(void *ud)
{
free(ud);
}
int
hookup_pem_passwd_cb(char *buf, int size, int rwflag, void *userdata)
{
struct CStringLen *password = userdata;
// hookup_new_userdata failed, so we fail.
if (NULL == password) { return -1; }
// password requested when none was provided, so we fail.
if (0 > password->len) { return -1; }
// OpenSSL says to truncate the password if it's too long
if (password->len < size) {
size = password->len;
}
memcpy(buf, password->ptr, size);
return size;
}
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