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8ecd256 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 | ---[ Phrack Magazine Volume 8, Issue 52 January 26, 1998, article 20 of 20
-------------------------[ Phrack Magzine Extraction Utility
--------[ Phrack Staff
Added to the list of extraction variants this time is a version in AWK,
and a version in sh. Also, the C version has ben spruced up to accept
file name globs. Keep `em coming...
---------------------8<------------CUT-HERE----------->8---------------------
<++> PEU/extract2.c
/* extract.c by Phrack Staff and sirsyko
*
* (c) Phrack Magazine, 1997
* 1.8.98 rewritten by route:
* - aesthetics
* - now accepts file globs
* todo:
* - more info in tag header (file mode, checksum)
* Extracts textfiles from a specially tagged flatfile into a hierarchical
* directory strcuture. Use to extract source code from any of the articles
* in Phrack Magazine (first appeared in Phrack 50).
*
* gcc -o extract extract.c
*
* ./extract file1 file2 file3 ...
*/
#include <stdio.h>
#include <stdlib.h>
#include <sys/stat.h>
#include <string.h>
#include <dirent.h>
#define BEGIN_TAG "<++> "
#define END_TAG "<-->"
#define BT_SIZE strlen(BEGIN_TAG)
#define ET_SIZE strlen(END_TAG)
struct f_name
{
u_char name[256];
struct f_name *next;
};
int
main(int argc, char **argv)
{
u_char b[256], *bp, *fn;
int i, j = 0;
FILE *in_p, *out_p = NULL;
struct f_name *fn_p = NULL, *head = NULL;
if (argc < 2)
{
printf("Usage: %s file1 file2 ... filen\n", argv[0]);
exit(0);
}
/*
* Fill the f_name list with all the files on the commandline (ignoring
* argv[0] which is this executable). This includes globs.
*/
for (i = 1; (fn = argv[i++]); )
{
if (!head)
{
if (!(head = (struct f_name *)malloc(sizeof(struct f_name))))
{
perror("malloc");
exit(1);
}
strncpy(head->name, fn, sizeof(head->name));
head->next = NULL;
fn_p = head;
}
else
{
if (!(fn_p->next = (struct f_name *)malloc(sizeof(struct f_name))))
{
perror("malloc");
exit(1);
}
fn_p = fn_p->next;
strncpy(fn_p->name, fn, sizeof(fn_p->name));
fn_p->next = NULL;
}
}
/*
* Sentry node.
*/
if (!(fn_p->next = (struct f_name *)malloc(sizeof(struct f_name))))
{
perror("malloc");
exit(1);
}
fn_p = fn_p->next;
fn_p->next = NULL;
/*
* Check each file in the f_name list for extraction tags.
*/
for (fn_p = head; fn_p->next; fn_p = fn_p->next)
{
if (!(in_p = fopen(fn_p->name, "r")))
{
fprintf(stderr, "Could not open input file %s.\n", fn_p->name);
continue;
}
else fprintf(stderr, "Opened %s\n", fn_p->name);
while (fgets(b, 256, in_p))
{
if (!strncmp (b, BEGIN_TAG, BT_SIZE))
{
b[strlen(b) - 1] = 0; /* Now we have a string. */
j++;
if ((bp = strchr(b + BT_SIZE + 1, '/')))
{
while (bp)
{
*bp = 0;
mkdir(b + BT_SIZE, 0700);
*bp = '/';
bp = strchr(bp + 1, '/');
}
}
if ((out_p = fopen(b + BT_SIZE, "w")))
{
printf("- Extracting %s\n", b + BT_SIZE);
}
else
{
printf("Could not extract '%s'.\n", b + BT_SIZE);
continue;
}
}
else if (!strncmp (b, END_TAG, ET_SIZE))
{
if (out_p) fclose(out_p);
else
{
fprintf(stderr, "Error closing file %s.\n", fn_p->name);
continue;
}
}
else if (out_p)
{
fputs(b, out_p);
}
}
}
if (!j) printf("No extraction tags found in list.\n");
else printf("Extracted %d file(s).\n", j);
return (0);
}
/* EOF */
<-->
<++> PEU/extract.pl
# Daos <daos@nym.alias.net>
#!/bin/sh -- # -*- perl -*- -n
eval 'exec perl $0 -S ${1+"$@"}' if 0;
$opening=0;
if (/^\<\+\+\>/) {$curfile = substr($_ , 5); $opening=1;};
if (/^\<\-\-\>/) {close ct_ex; $opened=0;};
if ($opening) {
chop $curfile;
$sex_dir= substr( $curfile, 0, ((rindex($curfile,'/'))) ) if ($curfile =~ m/\//);
eval {mkdir $sex_dir, "0777";};
open(ct_ex,">$curfile");
print "Attempting extraction of $curfile\n";
$opened=1;
}
if ($opened && !$opening) {print ct_ex $_};
<-->
<++> PEU/extract.awk
#!/usr/bin/awk -f
#
# Yet Another Extraction Script
# - <sirsyko>
#
/^\<\+\+\>/ {
ind = 1
File = $2
split ($2, dirs, "/")
Dir="."
while ( dirs[ind+1] ) {
Dir=Dir"/"dirs[ind]
system ("mkdir " Dir" 2>/dev/null")
++ind
}
next
}
/^\<\-\-\>/ {
File = ""
next
}
File { print >> File }
<-->
<++> PEU/extract.sh
#!/bin/sh
# exctract.sh : Written 9/2/1997 for the Phrack Staff by <sirsyko>
#
# note, this file will create all directories relative to the current directory
# originally a bug, I've now upgraded it to a feature since I dont want to deal
# with the leading / (besides, you dont want hackers giving you full pathnames
# anyway, now do you :)
# Hopefully this will demonstrate another useful aspect of IFS other than
# haxoring rewt
#
# Usage: ./extract.sh <filename>
cat $* | (
Working=1
while [ $Working ];
do
OLDIFS1="$IFS"
IFS=
if read Line; then
IFS="$OLDIFS1"
set -- $Line
case "$1" in
"<++>") OLDIFS2="$IFS"
IFS=/
set -- $2
IFS="$OLDIFS2"
while [ $# -gt 1 ]; do
File=${File:-"."}/$1
if [ ! -d $File ]; then
echo "Making dir $File"
mkdir $File
fi
shift
done
File=${File:-"."}/$1
echo "Storing data in $File"
;;
"<-->") if [ "x$File" != "x" ]; then
unset File
fi ;;
*) if [ "x$File" != "x" ]; then
IFS=
echo "$Line" >> $File
IFS="$OLDIFS1"
fi
;;
esac
IFS="$OLDIFS1"
else
echo "End of file"
unset Working
fi
done
)
<-->
----[ EOF
|