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openssl/engines/ccgost/gostsum.c

Index: openssl/engines/ccgost/gostsum.c
===================================================================
--- openssl/engines/ccgost/gostsum.c	(revision 0)
+++ openssl/engines/ccgost/gostsum.c	(revision 0)
@@ -0,0 +1,210 @@
+/**********************************************************************
+ *                        gostsum.c                                   *
+ *             Copyright (c) 2005-2006 Cryptocom LTD                  *
+ *         This file is distributed under the same license as OpenSSL *
+ *                                                                    *
+ *        Almost drop-in replacement for md5sum and sha1sum           *
+ *          which computes GOST R 34.11-94 hashsum instead            *
+ *                                                                    *
+ **********************************************************************/
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <limits.h>
+#include <fcntl.h>
+#include <string.h>
+#include "gosthash.h"
+#define BUF_SIZE 262144
+int hash_file(gost_hash_ctx *ctx,char *filename,char *sum,int mode);
+int hash_stream(gost_hash_ctx *ctx,int fd, char *sum);
+int get_line(FILE *f,char *hash,char *filename);
+void help()
+	{
+	fprintf(stderr,"gostsum [-bvt] [-c [file]]| [files]\n"
+		"\t-c check message digests (default is generate)\n"
+		"\t-v verbose, print file names when checking\n"
+		"\t-b read files in binary mode\n"
+		"\t-t use test GOST paramset (default is CryptoPro paramset)\n"
+		"The input for -c should be the list of message digests and file names\n"
+		"that is printed on stdout by this program when it generates digests.\n");
+	exit(3);
+	}
+
+#ifndef O_BINARY
+#define O_BINARY 0
+#endif
+
+int main(int argc,char **argv)
+	{
+	int c,i;
+	int verbose=0;
+	int errors=0;
+	int open_mode = O_RDONLY;
+	gost_subst_block *b=  &GostR3411_94_CryptoProParamSet;
+	FILE *check_file = NULL;
+	gost_hash_ctx ctx;
+	
+	while( (c=getopt(argc,argv,"bc::tv"))!=-1)
+		{
+		switch (c)
+			{
+			case 'v': verbose=1; break;
+			case 't': b= &GostR3411_94_TestParamSet; break;
+			case 'b': open_mode |= O_BINARY; break;
+			case 'c':
+				if (optarg)
+					{
+					check_file = fopen(optarg,"r");
+					if (!check_file)
+						{
+						perror(optarg);
+						exit(2);
+						}
+					}
+				else
+					{
+				  	check_file= stdin;
+					}
+				break;
+			default:
+				fprintf(stderr,"invalid option %c",optopt);
+				help();
+			}
+		}
+	init_gost_hash_ctx(&ctx,b);
+	if (check_file)
+		{
+		char inhash[65],calcsum[65],filename[PATH_MAX];
+		int failcount=0,count=0;;
+		if (check_file==stdin && optind<argc)
+			{
+			check_file=fopen(argv[optind],"r");
+			if (!check_file)
+				{	
+				perror(argv[optind]);
+				exit(2);
+				}
+			}	
+		while (get_line(check_file,inhash,filename))
+			{
+			if (!hash_file(&ctx,filename,calcsum,open_mode))
+				{
+				exit (2);
+				}	
+			count++;
+			if (!strncmp(calcsum,inhash,65))
+				{
+				if (verbose)
+					{
+					fprintf(stderr,"%s\tOK\n",filename);
+					}
+				}
+			else
+				{
+				if (verbose)
+					{
+					fprintf(stderr,"%s\tFAILED\n",filename);
+					}
+				else
+					{
+					fprintf(stderr,"%s: GOST hash sum check failed for '%s'\n",
+						argv[0],filename);
+					}
+				failcount++;
+				}
+			}	
+		if (verbose && failcount)
+			{
+			fprintf(stderr,"%s: %d of %d file(f) failed GOST hash sum check\n",
+				argv[0],failcount,count);
+			}
+		exit (failcount?1:0);
+		}
+	if (optind==argc)
+		{
+		char sum[65];
+		if (!hash_stream(&ctx,fileno(stdin),sum))
+			{
+			perror("stdin");
+			exit(1);
+			}	
+		printf("%s -\n",sum);
+		exit(0);
+		}	
+	for (i=optind;i<argc;i++)
+		{
+		char sum[65];
+		if (!hash_file(&ctx,argv[i],sum,open_mode))
+			{
+			errors++;
+			}
+		else
+			{	
+			printf("%s %s\n",sum,argv[i]);
+			}
+		}	
+	exit(errors?1:0);	
+	}
+
+int hash_file(gost_hash_ctx *ctx,char *filename,char *sum,int mode)
+	{
+	int fd;
+	if ((fd=open(filename,mode))<0)
+		{
+		perror(filename);
+		return 0;
+		}
+	if (!hash_stream(ctx,fd,sum))
+		{
+		perror(filename);
+		return 0;
+		}	
+	close(fd);
+	return 1;
+	}
+
+int hash_stream(gost_hash_ctx *ctx,int fd, char *sum)
+	{
+	unsigned char buffer[BUF_SIZE];
+	ssize_t bytes;
+	int i;
+	start_hash(ctx);
+	while ((bytes=read(fd,buffer,BUF_SIZE))>0)
+		{
+		hash_block(ctx,buffer,bytes);
+		}
+	if (bytes<0)
+		{
+		return 0;
+		}	
+	finish_hash(ctx,buffer);
+	for (i=0;i<32;i++)
+		{
+		sprintf(sum+2*i,"%02x",buffer[31-i]);
+		}
+	return 1;
+	}	
+	
+int get_line(FILE *f,char *hash,char *filename)
+	{
+	int i;
+	if (fread(hash,1,64,f)<64) return 0;
+	hash[64]=0;
+	for (i=0;i<64;i++)
+		{
+		if (hash[i]<'0' || (hash[i]>'9' && hash[i]<'A') || (hash[i]>'F'
+				&& hash[i]<'a')||hash[i]>'f')
+			{
+			fprintf(stderr,"Not a hash value '%s'\n",hash);
+			return 0;
+			}
+		}	
+	if (fgetc(f)!=' ')
+		{
+		fprintf(stderr,"Malformed input line\n");
+		return 0;
+		}
+	i=strlen(fgets(filename,PATH_MAX,f));
+	while (filename[--i]=='\n'||filename[i]=='\r') filename[i]=0;
+	return 1;
+	}