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/* readsfv.c - reads from an existing checksum listing and verifies that
the files are good
Copyright (C) 2000 Bryan Call <bc@fodder.org>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <errno.h>
#include <unistd.h>
#include <ctype.h>
#include <dirent.h>
#include <stdlib.h>
extern int crc32(int, uint32_t *, unsigned long*);
extern void prsfv_head(char*);
int find_file(char*, char*);
extern int quiet;
int readsfv(char *fn, char *dir, int nocase)
{
FILE *fd;
char buf[512], *end, filename[512], crc[9], path[256];
int file, rval = 0;
unsigned long len, sfvcrc;
uint32_t val;
if (quiet == 0) {
prsfv_head(fn);
}
fd = fopen(fn, "r");
if (fd == NULL) {
if (quiet != 2)
fprintf(stderr, "cksfv: %s: BAD - %s\n", fn, strerror(errno));
exit(1);
}
if (chdir(dir) != 0) {
if (quiet != 2)
fprintf(stderr, "cksfv: %s: BAD - %s\n", dir, strerror(errno));
exit(1);
}
while(fgets(buf, 512, fd)) {
/* comment in the sfv file ignore */
if (buf[0] != ';' && buf[0] != '\n' && buf[0] != '\r') {
/* build filename and crc from the sfv file */
end = strrchr(buf, ' ');
if (end == NULL) {
fprintf(stderr, "cksfv: %s: BAD - incorrect sfv file format\n", fn);
exit(1);
}
*end = '\0';
*(end+9) = '\0';
strncpy(crc, ++end, 9);
strncpy(filename, buf, 512);
sfvcrc = strtoul(crc, '\0', 16);
if (quiet == 0)
fprintf(stderr, "%-49s ", filename);
snprintf(path, 256, "%s/%s", dir, filename);
/* can we open the file */
if ((file = open(filename, O_RDONLY, 0)) < 0) {
if (nocase == 1) {
/* try to search for it if ingore case is set */
find_file(filename, dir);
file = open(filename, O_RDONLY, 0);
}
}
/* if the file could not be opened */
if (file < 0) {
if (quiet == 0)
fprintf(stderr, "BAD - %s\n", strerror(errno));
else if (quiet == 1)
fprintf(stderr, "cksfv: %s: BAD - %s\n", filename, strerror(errno));
rval = 1;
continue;
}
if (crc32(file, &val, &len)) {
if (quiet == 0)
fprintf(stderr, "BAD - %s\n", strerror(errno));
else if (quiet == 1)
fprintf(stderr, "cksfv: %s: BAD - %s\n", filename, strerror(errno));
rval = 1;
} else {
if (((unsigned long) val) != sfvcrc) {
if (quiet == 0)
fprintf(stderr, "BAD - different CRC\n");
else if (quiet == 1)
fprintf(stderr, "cksfv: %s: BAD - has a different CRC\n", filename);
rval = 1;
} else
if (quiet == 0) {
fprintf(stderr, "OK\n");
}
}
close(file);
}
}
fclose(fd);
if (quiet == 0) {
if (rval == 0) {
printf("--------------------------------------------------------------------------------\nEverything OK\a\n");
} else {
printf("--------------------------------------------------------------------------------\nErrors Occured\a\n");
}
}
return(rval);
}
int find_file(char* filename, char* dir)
{
DIR *dirp;
struct dirent *dirinfo;
char *foo;
char *bar;
dirp = opendir(".");
if (dirp == NULL) {
if (quiet != 2)
fprintf(stderr, "cksfv: %s: %s\n", dir, strerror(errno));
return(0);
}
while ((dirinfo = readdir(dirp)) != NULL) {
for (foo = filename, bar = dirinfo->d_name; *foo != '\0' ||
*bar != '\0'; foo++, bar++) {
if (*foo != *bar) {
if (isalpha(*foo) && isalpha(*bar)) {
if (tolower(*foo) != tolower(*bar)) {
break;
}
} else {
if (!((*foo == '_' || *foo == ' ') &&
(*bar == '_' || *bar == ' '))) {
break;
}
}
}
}
if (*foo == '\0' && *bar == '\0')
strcpy(filename, dirinfo->d_name);
}
rewinddir(dirp);
return 1;
}
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