EverestLinux/glacier-old
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Fix integrity checking

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This commit is contained in:
lw-everestlinux 2022-12-12 19:30:53 -05:00
parent 974fe1f618
commit 1b94d281a6
1 changed files with 58 additions and 69 deletions
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39
src/int-check/main.c
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@ -1,9 +1,11 @@
//Write a program to compare two file. /* Glacier Integrity Check
* Small program to check file checksums
*/
#include <stdio.h> #include <stdio.h>
#include<string.h> #include<string.h>
int main(int argc, char *argv[]) int main(int argc, char *argv[]) {
{
FILE *fp1; FILE *fp1;
FILE *fp2; FILE *fp2;
@ -11,53 +13,41 @@ int main(int argc, char *argv[])
int cnt2 = 0; int cnt2 = 0;
int flg = 0; int flg = 0;
if( argc < 3 ) if (argc < 3) {
{ printf("not enough arguments\n");
printf("Insufficient Arguments!!!\n");
printf("Please use \"program-name file-name1 file-name2\" format.\n");
return -1; return -1;
} }
fp1 = fopen(argv[1],"r"); fp1 = fopen(argv[1],"r");
if( fp1 == NULL ) if (fp1 == NULL) {
{ printf("\n%s cannot open file \n",argv[1]);
printf("\n%s File can not be opened : \n",argv[1]);
return -1; return -1;
} }
// move file pointer to end and get total number of bytes
fseek(fp1,0,SEEK_END); fseek(fp1,0,SEEK_END);
cnt1 = ftell(fp1); cnt1 = ftell(fp1);
fp2 = fopen(argv[2],"r"); fp2 = fopen(argv[2],"r");
if( fp2 == NULL ) if (fp2 == NULL) {
{ printf("\n%s cannot open file \n",argv[2]);
printf("\n%s File can not be opened : \n",argv[2]);
return -1; return -1;
} }
// move file pointer to end and get total number of bytes
fseek(fp2,0,SEEK_END); fseek(fp2,0,SEEK_END);
cnt2 = ftell(fp2); cnt2 = ftell(fp2);
fseek(fp1,0,SEEK_SET); fseek(fp1,0,SEEK_SET);
fseek(fp2,0,SEEK_SET); fseek(fp2,0,SEEK_SET);
// check for the total number of bytes
if (cnt1 != cnt2) { if (cnt1 != cnt2) {
return 1; return 1;
} } else {
else while ( ! feof(fp1)) {
{ if (fgetc(fp1) != fgetc(fp2)) {
while( ! feof(fp1) )
{
if( fgetc(fp1) != fgetc(fp2) )
{
flg = 1; flg = 1;
break; break;
} }
} }
if (flg) return 1; if (flg) return 1;
else return 0; else return 0;
} }
@ -67,4 +57,3 @@ int main(int argc, char *argv[])
return 0; return 0;
} }