#include <stdint.h>
#include <stdio.h>
#include <string.h>
+#include <fcntl.h>
+#include <unistd.h>
#include <wolfssl/options.h>
#include <wolfssl/wolfcrypt/asn.h>
#include <wolfssl/wolfcrypt/asn_public.h>
RSA_KEY_TYPE = 1,
};
-int write_file(byte *buf, int bufSz, char *path) {
- int ret;
- FILE *file;
+int write_file(byte *buf, int bufSz, char *path, bool cert) {
+ mode_t mode = S_IRUSR | S_IWUSR;
+ ssize_t written;
+ int err;
+ int fd;
+
+ if (cert)
+ mode |= S_IRGRP | S_IROTH;
+
if (path) {
- file = fopen(path, "wb");
- if (file == NULL) {
+ fd = open(path, O_WRONLY | O_CREAT | O_TRUNC, mode);
+ if (fd < 0) {
perror("Error opening file");
exit(1);
}
} else {
- file = stdout;
+ fd = STDERR_FILENO;
}
- ret = (int)fwrite(buf, 1, bufSz, file);
- if (path) {
- fclose(file);
+ written = write(fd, buf, bufSz);
+ if (written != bufSz) {
+ perror("Error write file");
+ exit(1);
}
- if (ret > 0) {
- /* ret > 0 indicates a successful file write, set to zero for return */
- ret = 0;
+ err = fsync(fd);
+ if (err < 0) {
+ perror("Error fsync file");
+ exit(1);
}
- return ret;
+ if (path) {
+ close(fd);
+ }
+ return 0;
}
int write_key(ecc_key *ecKey, RsaKey *rsaKey, int type, int keySz, char *fName,
fprintf(stderr, "DER to PEM failed: %d\n", ret);
}
pemSz = ret;
- ret = write_file(pem, pemSz, fName);
+ ret = write_file(pem, pemSz, fName, false);
} else {
- ret = write_file(der, derSz, fName);
+ ret = write_file(der, derSz, fName, false);
}
return ret;
}
}
pemSz = ret;
- ret = write_file(pemBuf, pemSz, certpath);
+ ret = write_file(pemBuf, pemSz, certpath, true);
if (ret != 0) {
fprintf(stderr, "Write Cert failed: %d\n", ret);
return ret;