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/* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <ctype.h>
#include <dirent.h>
#include <stdio.h>
#include <string.h>
#include <time.h>
/*
* Compare a string to a mask
* Mask characters:
* @ - uppercase letter
* # - lowercase letter
* & - hex digit
* # - digit
* * - swallow remaining characters
* <x> - exact match for any other character
*/
static int checkmask(const char *data, const char *mask)
{
int i, ch, d;
for (i = 0; mask[i] != '\0' && mask[i] != '*'; i++) {
ch = mask[i];
d = data[i];
if (ch == '@') {
if (!isupper(d))
return 0;
}
else if (ch == '$') {
if (!islower(d))
return 0;
}
else if (ch == '#') {
if (!isdigit(d))
return 0;
}
else if (ch == '&') {
if (!isxdigit(d))
return 0;
}
else if (ch != d)
return 0;
}
if (mask[i] == '*')
return 1;
else
return (data[i] == '\0');
}
/*
* Converts 8 hex digits to a time integer
*/
static int hex2sec(const char *x)
{
int i, ch;
unsigned int j;
for (i = 0, j = 0; i < 8; i++) {
ch = x[i];
j <<= 4;
if (isdigit(ch))
j |= ch - '0';
else if (isupper(ch))
j |= ch - ('A' - 10);
else
j |= ch - ('a' - 10);
}
if (j == 0xffffffff)
return -1; /* so that it works with 8-byte ints */
else
return j;
}
int main(int argc, char **argv)
{
int i, ver;
DIR *d;
struct dirent *e;
const char *s;
FILE *fp;
char path[FILENAME_MAX + 1];
char line[1035];
time_t date, lmod, expire;
unsigned int len;
struct tm ts;
char sdate[30], slmod[30], sexpire[30];
const char time_format[] = "%e %b %Y %R";
if (argc != 2) {
printf("Usage: cls directory\n");
exit(0);
}
d = opendir(argv[1]);
if (d == NULL) {
perror("opendir");
exit(1);
}
for (;;) {
e = readdir(d);
if (e == NULL)
break;
s = e->d_name;
if (s[0] == '.' || s[0] == '#')
continue;
sprintf(path, "%s/%s", argv[1], s);
fp = fopen(path, "r");
if (fp == NULL) {
perror("fopen");
continue;
}
if (fgets(line, 1034, fp) == NULL) {
perror("fgets");
fclose(fp);
continue;
}
if (!checkmask(line, "&&&&&&&& &&&&&&&& &&&&&&&& &&&&&&&& &&&&&&&&\n")) {
fprintf(stderr, "Bad cache file\n");
fclose(fp);
continue;
}
date = hex2sec(line);
lmod = hex2sec(line + 9);
expire = hex2sec(line + 18);
ver = hex2sec(line + 27);
len = hex2sec(line + 35);
if (fgets(line, 1034, fp) == NULL) {
perror("fgets");
fclose(fp);
continue;
}
fclose(fp);
i = strlen(line);
if (strncmp(line, "X-URL: ", 7) != 0 || line[i - 1] != '\n') {
fprintf(stderr, "Bad cache file\n");
continue;
}
line[i - 1] = '\0';
if (date != -1) {
ts = *gmtime(&date);
strftime(sdate, 30, time_format, &ts);
}
else
strcpy(sdate, "-");
if (lmod != -1) {
ts = *gmtime(&lmod);
strftime(slmod, 30, time_format, &ts);
}
else
strcpy(slmod, "-");
if (expire != -1) {
ts = *gmtime(&expire);
strftime(sexpire, 30, time_format, &ts);
}
else
strcpy(sexpire, "-");
printf("%s: %d; %s %s %s\n", line + 7, ver, sdate, slmod, sexpire);
}
closedir(d);
return 0;
}
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