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#include <stdlib.h>
#include <fcntl.h>
#include <unistd.h>
#include <core.h>
#include "util.h"
int ecp_util_key_save(ECPContext *ctx, ECPDHKey *key, char *filename) {
int fd;
ssize_t rv;
if((fd = open(filename, O_WRONLY | O_CREAT, S_IRUSR | S_IWUSR)) < 0) return ECP_ERR;
rv = write(fd, ctx->cr.dh_pub_get_buf(&key->public), ECP_ECDH_SIZE_KEY);
if (rv != ECP_ECDH_SIZE_KEY) {
close(fd);
return ECP_ERR;
}
rv = write(fd, &key->private, sizeof(key->private));
if (rv != sizeof(key->private)) {
close(fd);
return ECP_ERR;
}
close(fd);
return ECP_OK;
}
int ecp_util_key_load(ECPContext *ctx, ECPDHKey *key, char *filename) {
int fd;
ssize_t rv;
unsigned char buf[ECP_ECDH_SIZE_KEY];
if((fd = open(filename, O_RDONLY)) < 0) return ECP_ERR;
rv = read(fd, buf, ECP_ECDH_SIZE_KEY);
if (rv != ECP_ECDH_SIZE_KEY) {
close(fd);
return ECP_ERR;
}
rv = read(fd, &key->private, sizeof(key->private));
if (rv != sizeof(key->private)) {
close(fd);
return ECP_ERR;
}
close(fd);
ctx->cr.dh_pub_from_buf(&key->public, buf);
key->valid = 1;
return ECP_OK;
}
int ecp_util_node_save(ECPContext *ctx, ECPNode *node, char *filename) {
int fd;
ssize_t rv;
if((fd = open(filename, O_WRONLY | O_CREAT, S_IRUSR | S_IWUSR)) < 0) return ECP_ERR;
rv = write(fd, ctx->cr.dh_pub_get_buf(&node->public), ECP_ECDH_SIZE_KEY);
if (rv != ECP_ECDH_SIZE_KEY) {
close(fd);
return ECP_ERR;
}
rv = write(fd, &node->addr, sizeof(node->addr));
if (rv != sizeof(node->addr)) {
close(fd);
return ECP_ERR;
}
close(fd);
return ECP_OK;
}
int ecp_util_node_load(ECPContext *ctx, ECPNode *node, char *filename) {
int fd;
ssize_t rv;
unsigned char buf[ECP_ECDH_SIZE_KEY];
if((fd = open(filename, O_RDONLY)) < 0) return ECP_ERR;
rv = read(fd, buf, ECP_ECDH_SIZE_KEY);
if (rv != ECP_ECDH_SIZE_KEY) {
close(fd);
return ECP_ERR;
}
rv = read(fd, &node->addr, sizeof(node->addr));
if (rv != sizeof(node->addr)) {
close(fd);
return ECP_ERR;
}
close(fd);
ctx->cr.dh_pub_from_buf(&node->public, buf);
return ECP_OK;
}
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