============================================================================== -------------[ BFi numero 9, anno 3 - 03/11/2000 - file 21 di 21 ]------------ ============================================================================== -[ MiSCELLANE0US ]------------------------------------------------------------ ---[ SNiP V.2 --[ Language: C - multi directory support - directory analysis - crc generator - statistics information <-| snip2/snip2.c |-> /* * Name: SNiP II * Date: Tue Aug 15 14:04:52 2000 * Author: pIGpEN [ pigpen@s0ftpj.org, deadhead@sikurezza.org ] * * SoftProject 2000 - Digital Sekurity for Y2k * Sikurezza.org - Italian Security MailingList * * COFFEE-WARE LICENSE - This source code is like "THE BEER-WARE LICENSE" by * Poul-Henning Kamp but you can give me in return a coffee. * * Tested on: FreeBSD 4.0-RELEASE FreeBSD 4.0-RELEASE #45: Sat Au i386 * * Snip for definition is coded during alcohol abuse ... This source can't have * a good style, logical parts or sense... I apologize... snip! ;) * */ #include #include #include #include #include #include #include #define BFIART "BFi" #define DIRNAME "bfisrc" #define BFISEP "<-| " #define BFIEND "<-X->" #define BFISEP_LEN strlen(BFISEP) #define BFIEND_LEN strlen(BFIEND) #define BUF_SIZE 1024 #ifndef S_ISDIR # ifdef S_IFDIR # define S_ISDIR(i) (((i) & S_IFMT) == S_IFDIR) # else # define S_ISDIR(i) (((i) & 0170000) == 0040000) # endif #endif #ifndef S_ISREG # ifdef S_IFREG # define S_ISREG(i) (((i) & S_IFMT) == S_IFREG) # else # define S_ISREG(i) (((i) & 0170000) == 0100000) # endif #endif int usage (char *cmd); void dir2file (char *dirname); void snip (char *filename); int checktype (char *name); void createsrc (FILE *in, FILE *out); int makedir (const char *dirname); unsigned long checkcrc (FILE *fp); extern char *optarg; struct { int st_snipped; int st_directory; } snipstat; int main(int narg, char **arg) { return ( (narg!=2) ? usage(arg[0]) : checktype(arg[1]) ); } int usage(char *cmd) { printf( "\nSNiPv2\n" "Usage: %s dir-or-file\n\n", cmd); return 0; } int checktype(char *name) { struct stat chk; bzero(&snipstat, sizeof snipstat); if (stat(name, &chk)) { printf("Hmm %s doesn't exist\n", name); exit(0); } if (S_ISDIR(chk.st_mode)) dir2file(name); if (S_ISREG(chk.st_mode)) snip(name); printf("\n%d snipped file\n", snipstat.st_snipped); printf("%d directory created\n", snipstat.st_directory); return 1; } void dir2file(char *dirname) { DIR *dp; struct dirent *de; if (!(dp=opendir(dirname))) { perror("[dir2file] opendir"); exit(0); } if (chdir(dirname) == -1) { perror("[dir2file] chdir1"); exit(0); } while ((de=readdir(dp))) { printf("[%s]: ", de->d_name); switch(de->d_type) { case DT_FIFO: case DT_BLK: case DT_LNK: case DT_DIR: case DT_SOCK: printf("skipping\n"); continue; } putchar('\n'); if (strstr(de->d_name, BFIART)) { snip(de->d_name); } else printf("\tnot found\n"); } closedir(dp); } void snip(char *filename) { FILE *in, *out; char buf[BUF_SIZE]; static int passed = 0; if (!passed) { makedir(DIRNAME); passed = 1; } if (!(in=fopen(filename,"r"))) { perror("[snip] fopen()"); exit(0); } chdir(DIRNAME); while (fgets(buf, BUF_SIZE, in)) { if (!strncmp(buf, BFISEP, BFISEP_LEN)) { char *ptr; buf[strlen(buf) - 1] = 0; /* * create directories like in extract */ if ((ptr = strchr(buf + BFISEP_LEN, '/'))) { while(ptr) { *ptr = 0; if(makedir(buf + BFISEP_LEN) != -1) snipstat.st_directory++; *ptr = '/'; ptr = strchr(ptr + 1, '/'); } } ptr = strchr(buf + BFISEP_LEN, ' '); /* * create file */ *ptr = 0; if (!(out = fopen(buf + BFISEP_LEN, "wb+"))) { perror("[snip] fopen(outfile)\n"); exit(0); } printf("\tfilename [%s] ", buf + BFISEP_LEN); createsrc(in, out); *ptr = ' '; /* * check crc */ if ((ptr = strstr(ptr, "crc32: "))) { char *ptr_crc; u_long crc, gencrc; ptr += strlen("crc32: "); if ((ptr_crc = strchr(ptr, ' '))) { *ptr_crc = 0; crc = strtoul(ptr, NULL, 10); gencrc = checkcrc(out); if(crc == gencrc) printf(" CRC32 ok"); else printf(" CRC32 error: %lu", gencrc); *ptr_crc = ' '; } else { printf("no end of crc in snip hdr\n"); exit(0); } } putchar('\n'); fclose(out); } } chdir(".."); fclose(in); } void createsrc(FILE *in, FILE *out) { char buf[BUF_SIZE]; snipstat.st_snipped++; while (fgets(buf, BUF_SIZE, in) && strncmp(buf, BFIEND, BFIEND_LEN)) fprintf(out, "%s", buf); } int makedir(const char *dirname) { return (mkdir(dirname, 0755)); } static const u_int32_t crctab[256] = { 0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, 0x706af48f, 0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988, 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91, 0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de, 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7, 0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9, 0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172, 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, 0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59, 0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423, 0xcfba9599, 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924, 0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190, 0x01db7106, 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433, 0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01, 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, 0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950, 0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65, 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, 0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0, 0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa, 0xbe0b1010, 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f, 0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, 0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a, 0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683, 0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8, 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1, 0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb, 0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc, 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, 0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b, 0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55, 0x316e8eef, 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236, 0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe, 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d, 0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a, 0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713, 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, 0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242, 0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777, 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, 0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45, 0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2, 0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc, 0x40df0b66, 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9, 0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, 0xcdd70693, 0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94, 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d, }; unsigned long checkcrc(FILE *fp) { register unsigned long crc; int c; crc = 0xFFFFFFFF; if (fseek(fp, 0, SEEK_SET) == -1) { perror("fseek"); exit(0); } while( (c = getc(fp)) != EOF ) crc = ((crc >> 8) & 0x00FFFFFF) ^ crctab[(crc ^ c) & 0xFF]; return (crc ^ 0xFFFFFFFF); } <-X-> --[ Perl Script - multidirectory support - directory analysis <-| snip2/snip2.pl |-> #!/usr/bin/perl # # S0FTPj Y2k - Tue Aug 15 12:48:53 2000 # # SNiP II - an extractor for Butchered From Inside # # $bfidir = "bfisrc"; sub create_file { local($file) = @_; $found = 0; open(IN_FILE, $file) || die "Unable to open $file\n"; chdir($bfidir); while () { if (/^\<-\|/) { $snipfile = substr($_, 4); $snipfile = substr($snipfile,0,index($snipfile, ' ')); @dirs = split('/',$snipfile); $ndir = 1; while ($dirs[$ndir]) { mkdir($dirs[0], 0755); $dirs[0] .= '/'.$dirs[$ndir++]; } print "\t$snipfile\n"; open(OUT_FILE, ">$snipfile"); $found = 1; next; } if (/^\<-X->/) { close(OUT_FILE); $found = 0; } print OUT_FILE $_ if($found); } close(IN_FILE); chdir(".."); return 0; } if (!$ARGV[0]) { print "Usage: snip2 filename-or-directory\n"; exit(0); } $mode = (stat($ARGV[0]))[2]; if (($mode & 0170000) == 0040000) { opendir(DIR, $ARGV[0]) || die "Unable to open directory\n"; chdir($ARGV[0]); mkdir($bfidir, 0755); while ($file = readdir(DIR)) { print "$file\n"; &create_file($file); } closedir(DIR); chdir(".."); } else { mkdir($bfidir, 0755); &create_file($ARGV[0]); } <-X-> ============================================================================== ---------------------------------[ EOF 21/21 ]-------------------------------- ==============================================================================