/** Get the sha256 sum of file.
* @param filename name of the file
* @return the checksum on success, NULL on error
* @addtogroup alpm_misc
*/
char SYMEXPORT *alpm_compute_sha256sum(const char *filename)
{
unsigned char output[32];
ASSERT(filename != NULL, return NULL);
/* defined above for OpenSSL, otherwise defined in sha2.h */
if(sha2_file(filename, output, 0) > 0) {
return NULL;
}
return hex_representation(output, 32);
}
/** Get the md5 sum of file.
* @param filename name of the file
* @return the checksum on success, NULL on error
* @addtogroup alpm_misc
*/
char SYMEXPORT *alpm_compute_md5sum(const char *filename)
{
unsigned char output[16];
ASSERT(filename != NULL, return NULL);
/* defined above for OpenSSL, otherwise defined in md5.h */
if(md5_file(filename, output) > 0) {
return NULL;
}
return hex_representation(output, 16);
}
static char *sha2_fd(int fd)
{
SHA256_CTX ctx;
unsigned char buf[BUFSIZ], output[32];
ssize_t n;
SHA256_Init(&ctx);
while ((n = read(fd, buf, sizeof(buf))) > 0 || errno == EINTR) {
if (n < 0)
continue;
SHA256_Update(&ctx, buf, n);
}
if (n < 0)
return NULL;
SHA256_Final(output, &ctx);
return hex_representation(output, 32);
}
static char *md5_fd(int fd)
{
MD5_CTX ctx;
unsigned char buf[BUFSIZ], output[16];
ssize_t n;
MD5_Init(&ctx);
while ((n = read(fd, buf, sizeof(buf))) > 0 || errno == EINTR) {
if (n < 0)
continue;
MD5_Update(&ctx, buf, n);
}
if (n < 0)
return NULL;
MD5_Final(output, &ctx);
return hex_representation(output, 16);
}
string Z3BitVector::internal_representation(int in, string type){
return hex_representation(in, type);
}
