156 lines
3.0 KiB
C
156 lines
3.0 KiB
C
/* See LICENSE file for copyright and license details. */
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <stdint.h>
|
|
#include <string.h>
|
|
#include "../util.h"
|
|
#include "../text.h"
|
|
#include "../crypt.h"
|
|
|
|
static int
|
|
hexdec(int c)
|
|
{
|
|
if(c >= '0' && c <= '9')
|
|
return c - '0';
|
|
else if(c >= 'A' && c <= 'F')
|
|
return c - 'A' + 10;
|
|
else if(c >= 'a' && c <= 'f')
|
|
return c - 'a' + 10;
|
|
return -1; /* unknown character */
|
|
}
|
|
|
|
static int
|
|
mdcheckline(const char *s, uint8_t *md, size_t sz)
|
|
{
|
|
size_t i;
|
|
int b1, b2;
|
|
|
|
for(i = 0; i < sz; i++) {
|
|
if(!*s || (b1 = hexdec(*s++)) < 0)
|
|
return -1; /* invalid format */
|
|
if(!*s || (b2 = hexdec(*s++)) < 0)
|
|
return -1; /* invalid format */
|
|
if((uint8_t)((b1 << 4) | b2) != md[i])
|
|
return 0; /* value mismatch */
|
|
}
|
|
return (i == sz) ? 1 : 0;
|
|
}
|
|
|
|
int
|
|
cryptcheck(char *sumfile, int argc, char *argv[],
|
|
struct crypt_ops *ops, uint8_t *md, size_t sz)
|
|
{
|
|
FILE *cfp, *fp;
|
|
char *line = NULL, *file, *p;
|
|
int r, nonmatch = 0, formatsucks = 0, noread = 0, ret = 0;
|
|
size_t bufsiz = 0;
|
|
|
|
if(sumfile == NULL)
|
|
cfp = stdin;
|
|
else if(!(cfp = fopen(sumfile, "r")))
|
|
eprintf("fopen %s:", sumfile);
|
|
|
|
while(agetline(&line, &bufsiz, cfp) != -1) {
|
|
if(!(file = strstr(line, " "))) {
|
|
formatsucks++;
|
|
continue;
|
|
}
|
|
if((file - line) / 2 != sz) {
|
|
formatsucks++; /* checksum length mismatch */
|
|
continue;
|
|
}
|
|
*file = '\0';
|
|
file += 2;
|
|
for(p = file; *p && *p != '\n' && *p != '\r'; p++); /* strip newline */
|
|
*p = '\0';
|
|
if(!(fp = fopen(file, "r"))) {
|
|
weprintf("fopen %s:", file);
|
|
noread++;
|
|
continue;
|
|
}
|
|
cryptsum(ops, fp, file, md);
|
|
r = mdcheckline(line, md, sz);
|
|
if(r == 1) {
|
|
printf("%s: OK\n", file);
|
|
} else if(r == 0) {
|
|
printf("%s: FAILED\n", file);
|
|
nonmatch++;
|
|
} else {
|
|
formatsucks++;
|
|
}
|
|
fclose(fp);
|
|
}
|
|
if(sumfile != NULL)
|
|
fclose(cfp);
|
|
free(line);
|
|
if(formatsucks > 0) {
|
|
weprintf("%d lines are improperly formatted\n", formatsucks);
|
|
ret = 1;
|
|
}
|
|
if(noread > 0) {
|
|
weprintf("%d listed file could not be read\n", noread);
|
|
ret = 1;
|
|
}
|
|
if(nonmatch > 0) {
|
|
weprintf("%d computed checksums did NOT match\n", nonmatch);
|
|
ret = 1;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
int
|
|
cryptmain(int argc, char *argv[],
|
|
struct crypt_ops *ops, uint8_t *md, size_t sz)
|
|
{
|
|
FILE *fp;
|
|
int ret = 0;
|
|
|
|
if (argc == 0) {
|
|
cryptsum(ops, stdin, "<stdin>", md);
|
|
mdprint(md, "<stdin>", sz);
|
|
} else {
|
|
for (; argc > 0; argc--) {
|
|
if((fp = fopen(*argv, "r")) == NULL) {
|
|
weprintf("fopen %s:", *argv);
|
|
ret = 1;
|
|
continue;
|
|
}
|
|
if(cryptsum(ops, fp, *argv, md) == 1)
|
|
ret = 1;
|
|
else
|
|
mdprint(md, *argv, sz);
|
|
fclose(fp);
|
|
argv++;
|
|
}
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
int
|
|
cryptsum(struct crypt_ops *ops, FILE *fp, const char *f,
|
|
uint8_t *md)
|
|
{
|
|
uint8_t buf[BUFSIZ];
|
|
size_t n;
|
|
|
|
ops->init(ops->s);
|
|
while ((n = fread(buf, 1, sizeof(buf), fp)) > 0)
|
|
ops->update(ops->s, buf, n);
|
|
if (ferror(fp)) {
|
|
weprintf("read error: %s:", f);
|
|
return 1;
|
|
}
|
|
ops->sum(ops->s, md);
|
|
return 0;
|
|
}
|
|
|
|
void
|
|
mdprint(const uint8_t *md, const char *f, size_t len)
|
|
{
|
|
size_t i;
|
|
|
|
for (i = 0; i < len; i++)
|
|
printf("%02x", md[i]);
|
|
printf(" %s\n", f);
|
|
}
|