+++ /dev/null
-/*
- * untgz.c -- Display contents and extract files from a gzip'd TAR file
- *
- * written by Pedro A. Aranda Gutierrez <paag@tid.es>
- * adaptation to Unix by Jean-loup Gailly <jloup@gzip.org>
- * various fixes by Cosmin Truta <cosmint@cs.ubbcluj.ro>
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <time.h>
-#include <errno.h>
-
-#include "zlib.h"
-
-#ifdef unix
-# include <unistd.h>
-#else
-# include <direct.h>
-# include <io.h>
-#endif
-
-#ifdef WIN32
-#include <windows.h>
-# ifndef F_OK
-# define F_OK 0
-# endif
-# define mkdir(dirname,mode) _mkdir(dirname)
-# ifdef _MSC_VER
-# define access(path,mode) _access(path,mode)
-# define chmod(path,mode) _chmod(path,mode)
-# define strdup(str) _strdup(str)
-# endif
-#else
-# include <utime.h>
-#endif
-
-
-/* values used in typeflag field */
-
-#define REGTYPE '0' /* regular file */
-#define AREGTYPE '\0' /* regular file */
-#define LNKTYPE '1' /* link */
-#define SYMTYPE '2' /* reserved */
-#define CHRTYPE '3' /* character special */
-#define BLKTYPE '4' /* block special */
-#define DIRTYPE '5' /* directory */
-#define FIFOTYPE '6' /* FIFO special */
-#define CONTTYPE '7' /* reserved */
-
-/* GNU tar extensions */
-
-#define GNUTYPE_DUMPDIR 'D' /* file names from dumped directory */
-#define GNUTYPE_LONGLINK 'K' /* long link name */
-#define GNUTYPE_LONGNAME 'L' /* long file name */
-#define GNUTYPE_MULTIVOL 'M' /* continuation of file from another volume */
-#define GNUTYPE_NAMES 'N' /* file name that does not fit into main hdr */
-#define GNUTYPE_SPARSE 'S' /* sparse file */
-#define GNUTYPE_VOLHDR 'V' /* tape/volume header */
-
-
-/* tar header */
-
-#define BLOCKSIZE 512
-#define SHORTNAMESIZE 100
-
-struct tar_header
-{ /* byte offset */
- char name[100]; /* 0 */
- char mode[8]; /* 100 */
- char uid[8]; /* 108 */
- char gid[8]; /* 116 */
- char size[12]; /* 124 */
- char mtime[12]; /* 136 */
- char chksum[8]; /* 148 */
- char typeflag; /* 156 */
- char linkname[100]; /* 157 */
- char magic[6]; /* 257 */
- char version[2]; /* 263 */
- char uname[32]; /* 265 */
- char gname[32]; /* 297 */
- char devmajor[8]; /* 329 */
- char devminor[8]; /* 337 */
- char prefix[155]; /* 345 */
- /* 500 */
-};
-
-union tar_buffer
-{
- char buffer[BLOCKSIZE];
- struct tar_header header;
-};
-
-struct attr_item
-{
- struct attr_item *next;
- char *fname;
- int mode;
- time_t time;
-};
-
-enum { TGZ_EXTRACT, TGZ_LIST, TGZ_INVALID };
-
-char *TGZfname OF((const char *));
-void TGZnotfound OF((const char *));
-
-int getoct OF((char *, int));
-char *strtime OF((time_t *));
-int setfiletime OF((char *, time_t));
-void push_attr OF((struct attr_item **, char *, int, time_t));
-void restore_attr OF((struct attr_item **));
-
-int ExprMatch OF((char *, char *));
-
-int makedir OF((char *));
-int matchname OF((int, int, char **, char *));
-
-void error OF((const char *));
-int tar OF((gzFile, int, int, int, char **));
-
-void help OF((int));
-int main OF((int, char **));
-
-char *prog;
-
-const char *TGZsuffix[] = { "\0", ".tar", ".tar.gz", ".taz", ".tgz", NULL };
-
-/* return the file name of the TGZ archive */
-/* or NULL if it does not exist */
-
-char *TGZfname (const char *arcname)
-{
- static char buffer[1024];
- int origlen,i;
-
- strcpy(buffer,arcname);
- origlen = strlen(buffer);
-
- for (i=0; TGZsuffix[i]; i++)
- {
- strcpy(buffer+origlen,TGZsuffix[i]);
- if (access(buffer,F_OK) == 0)
- return buffer;
- }
- return NULL;
-}
-
-
-/* error message for the filename */
-
-void TGZnotfound (const char *arcname)
-{
- int i;
-
- fprintf(stderr,"%s: Couldn't find ",prog);
- for (i=0;TGZsuffix[i];i++)
- fprintf(stderr,(TGZsuffix[i+1]) ? "%s%s, " : "or %s%s\n",
- arcname,
- TGZsuffix[i]);
- exit(1);
-}
-
-
-/* convert octal digits to int */
-/* on error return -1 */
-
-int getoct (char *p,int width)
-{
- int result = 0;
- char c;
-
- while (width--)
- {
- c = *p++;
- if (c == 0)
- break;
- if (c == ' ')
- continue;
- if (c < '0' || c > '7')
- return -1;
- result = result * 8 + (c - '0');
- }
- return result;
-}
-
-
-/* convert time_t to string */
-/* use the "YYYY/MM/DD hh:mm:ss" format */
-
-char *strtime (time_t *t)
-{
- struct tm *local;
- static char result[32];
-
- local = localtime(t);
- sprintf(result,"%4d/%02d/%02d %02d:%02d:%02d",
- local->tm_year+1900, local->tm_mon+1, local->tm_mday,
- local->tm_hour, local->tm_min, local->tm_sec);
- return result;
-}
-
-
-/* set file time */
-
-int setfiletime (char *fname,time_t ftime)
-{
-#ifdef WIN32
- static int isWinNT = -1;
- SYSTEMTIME st;
- FILETIME locft, modft;
- struct tm *loctm;
- HANDLE hFile;
- int result;
-
- loctm = localtime(&ftime);
- if (loctm == NULL)
- return -1;
-
- st.wYear = (WORD)loctm->tm_year + 1900;
- st.wMonth = (WORD)loctm->tm_mon + 1;
- st.wDayOfWeek = (WORD)loctm->tm_wday;
- st.wDay = (WORD)loctm->tm_mday;
- st.wHour = (WORD)loctm->tm_hour;
- st.wMinute = (WORD)loctm->tm_min;
- st.wSecond = (WORD)loctm->tm_sec;
- st.wMilliseconds = 0;
- if (!SystemTimeToFileTime(&st, &locft) ||
- !LocalFileTimeToFileTime(&locft, &modft))
- return -1;
-
- if (isWinNT < 0)
- isWinNT = (GetVersion() < 0x80000000) ? 1 : 0;
- hFile = CreateFile(fname, GENERIC_WRITE, 0, NULL, OPEN_EXISTING,
- (isWinNT ? FILE_FLAG_BACKUP_SEMANTICS : 0),
- NULL);
- if (hFile == INVALID_HANDLE_VALUE)
- return -1;
- result = SetFileTime(hFile, NULL, NULL, &modft) ? 0 : -1;
- CloseHandle(hFile);
- return result;
-#else
- struct utimbuf settime;
-
- settime.actime = settime.modtime = ftime;
- return utime(fname,&settime);
-#endif
-}
-
-
-/* push file attributes */
-
-void push_attr(struct attr_item **list,char *fname,int mode,time_t time)
-{
- struct attr_item *item;
-
- item = (struct attr_item *)malloc(sizeof(struct attr_item));
- if (item == NULL)
- error("Out of memory");
- item->fname = strdup(fname);
- item->mode = mode;
- item->time = time;
- item->next = *list;
- *list = item;
-}
-
-
-/* restore file attributes */
-
-void restore_attr(struct attr_item **list)
-{
- struct attr_item *item, *prev;
-
- for (item = *list; item != NULL; )
- {
- setfiletime(item->fname,item->time);
- chmod(item->fname,item->mode);
- prev = item;
- item = item->next;
- free(prev);
- }
- *list = NULL;
-}
-
-
-/* match regular expression */
-
-#define ISSPECIAL(c) (((c) == '*') || ((c) == '/'))
-
-int ExprMatch (char *string,char *expr)
-{
- while (1)
- {
- if (ISSPECIAL(*expr))
- {
- if (*expr == '/')
- {
- if (*string != '\\' && *string != '/')
- return 0;
- string ++; expr++;
- }
- else if (*expr == '*')
- {
- if (*expr ++ == 0)
- return 1;
- while (*++string != *expr)
- if (*string == 0)
- return 0;
- }
- }
- else
- {
- if (*string != *expr)
- return 0;
- if (*expr++ == 0)
- return 1;
- string++;
- }
- }
-}
-
-
-/* recursive mkdir */
-/* abort on ENOENT; ignore other errors like "directory already exists" */
-/* return 1 if OK */
-/* 0 on error */
-
-int makedir (char *newdir)
-{
- char *buffer = strdup(newdir);
- char *p;
- int len = strlen(buffer);
-
- if (len <= 0) {
- free(buffer);
- return 0;
- }
- if (buffer[len-1] == '/') {
- buffer[len-1] = '\0';
- }
- if (mkdir(buffer, 0755) == 0)
- {
- free(buffer);
- return 1;
- }
-
- p = buffer+1;
- while (1)
- {
- char hold;
-
- while(*p && *p != '\\' && *p != '/')
- p++;
- hold = *p;
- *p = 0;
- if ((mkdir(buffer, 0755) == -1) && (errno == ENOENT))
- {
- fprintf(stderr,"%s: Couldn't create directory %s\n",prog,buffer);
- free(buffer);
- return 0;
- }
- if (hold == 0)
- break;
- *p++ = hold;
- }
- free(buffer);
- return 1;
-}
-
-
-int matchname (int arg,int argc,char **argv,char *fname)
-{
- if (arg == argc) /* no arguments given (untgz tgzarchive) */
- return 1;
-
- while (arg < argc)
- if (ExprMatch(fname,argv[arg++]))
- return 1;
-
- return 0; /* ignore this for the moment being */
-}
-
-
-/* tar file list or extract */
-
-int tar (gzFile in,int action,int arg,int argc,char **argv)
-{
- union tar_buffer buffer;
- int len;
- int err;
- int getheader = 1;
- int remaining = 0;
- FILE *outfile = NULL;
- char fname[BLOCKSIZE];
- int tarmode;
- time_t tartime;
- struct attr_item *attributes = NULL;
-
- if (action == TGZ_LIST)
- printf(" date time size file\n"
- " ---------- -------- --------- -------------------------------------\n");
- while (1)
- {
- len = gzread(in, &buffer, BLOCKSIZE);
- if (len < 0)
- error(gzerror(in, &err));
- /*
- * Always expect complete blocks to process
- * the tar information.
- */
- if (len != BLOCKSIZE)
- {
- action = TGZ_INVALID; /* force error exit */
- remaining = 0; /* force I/O cleanup */
- }
-
- /*
- * If we have to get a tar header
- */
- if (getheader >= 1)
- {
- /*
- * if we met the end of the tar
- * or the end-of-tar block,
- * we are done
- */
- if (len == 0 || buffer.header.name[0] == 0)
- break;
-
- tarmode = getoct(buffer.header.mode,8);
- tartime = (time_t)getoct(buffer.header.mtime,12);
- if (tarmode == -1 || tartime == (time_t)-1)
- {
- buffer.header.name[0] = 0;
- action = TGZ_INVALID;
- }
-
- if (getheader == 1)
- {
- strncpy(fname,buffer.header.name,SHORTNAMESIZE);
- if (fname[SHORTNAMESIZE-1] != 0)
- fname[SHORTNAMESIZE] = 0;
- }
- else
- {
- /*
- * The file name is longer than SHORTNAMESIZE
- */
- if (strncmp(fname,buffer.header.name,SHORTNAMESIZE-1) != 0)
- error("bad long name");
- getheader = 1;
- }
-
- /*
- * Act according to the type flag
- */
- switch (buffer.header.typeflag)
- {
- case DIRTYPE:
- if (action == TGZ_LIST)
- printf(" %s <dir> %s\n",strtime(&tartime),fname);
- if (action == TGZ_EXTRACT)
- {
- makedir(fname);
- push_attr(&attributes,fname,tarmode,tartime);
- }
- break;
- case REGTYPE:
- case AREGTYPE:
- remaining = getoct(buffer.header.size,12);
- if (remaining == -1)
- {
- action = TGZ_INVALID;
- break;
- }
- if (action == TGZ_LIST)
- printf(" %s %9d %s\n",strtime(&tartime),remaining,fname);
- else if (action == TGZ_EXTRACT)
- {
- if (matchname(arg,argc,argv,fname))
- {
- outfile = fopen(fname,"wb");
- if (outfile == NULL) {
- /* try creating directory */
- char *p = strrchr(fname, '/');
- if (p != NULL) {
- *p = '\0';
- makedir(fname);
- *p = '/';
- outfile = fopen(fname,"wb");
- }
- }
- if (outfile != NULL)
- printf("Extracting %s\n",fname);
- else
- fprintf(stderr, "%s: Couldn't create %s",prog,fname);
- }
- else
- outfile = NULL;
- }
- getheader = 0;
- break;
- case GNUTYPE_LONGLINK:
- case GNUTYPE_LONGNAME:
- remaining = getoct(buffer.header.size,12);
- if (remaining < 0 || remaining >= BLOCKSIZE)
- {
- action = TGZ_INVALID;
- break;
- }
- len = gzread(in, fname, BLOCKSIZE);
- if (len < 0)
- error(gzerror(in, &err));
- if (fname[BLOCKSIZE-1] != 0 || (int)strlen(fname) > remaining)
- {
- action = TGZ_INVALID;
- break;
- }
- getheader = 2;
- break;
- default:
- if (action == TGZ_LIST)
- printf(" %s <---> %s\n",strtime(&tartime),fname);
- break;
- }
- }
- else
- {
- unsigned int bytes = (remaining > BLOCKSIZE) ? BLOCKSIZE : remaining;
-
- if (outfile != NULL)
- {
- if (fwrite(&buffer,sizeof(char),bytes,outfile) != bytes)
- {
- fprintf(stderr,
- "%s: Error writing %s -- skipping\n",prog,fname);
- fclose(outfile);
- outfile = NULL;
- remove(fname);
- }
- }
- remaining -= bytes;
- }
-
- if (remaining == 0)
- {
- getheader = 1;
- if (outfile != NULL)
- {
- fclose(outfile);
- outfile = NULL;
- if (action != TGZ_INVALID)
- push_attr(&attributes,fname,tarmode,tartime);
- }
- }
-
- /*
- * Abandon if errors are found
- */
- if (action == TGZ_INVALID)
- {
- error("broken archive");
- break;
- }
- }
-
- /*
- * Restore file modes and time stamps
- */
- restore_attr(&attributes);
-
- if (gzclose(in) != Z_OK)
- error("failed gzclose");
-
- return 0;
-}
-
-
-/* ============================================================ */
-
-void help(int exitval)
-{
- printf("untgz version 0.2.1\n"
- " using zlib version %s\n\n",
- zlibVersion());
- printf("Usage: untgz file.tgz extract all files\n"
- " untgz file.tgz fname ... extract selected files\n"
- " untgz -l file.tgz list archive contents\n"
- " untgz -h display this help\n");
- exit(exitval);
-}
-
-void error(const char *msg)
-{
- fprintf(stderr, "%s: %s\n", prog, msg);
- exit(1);
-}
-
-
-/* ============================================================ */
-
-#if defined(WIN32) && defined(__GNUC__)
-int _CRT_glob = 0; /* disable argument globbing in MinGW */
-#endif
-
-int main(int argc,char **argv)
-{
- int action = TGZ_EXTRACT;
- int arg = 1;
- char *TGZfile;
- gzFile *f;
-
- prog = strrchr(argv[0],'\\');
- if (prog == NULL)
- {
- prog = strrchr(argv[0],'/');
- if (prog == NULL)
- {
- prog = strrchr(argv[0],':');
- if (prog == NULL)
- prog = argv[0];
- else
- prog++;
- }
- else
- prog++;
- }
- else
- prog++;
-
- if (argc == 1)
- help(0);
-
- if (strcmp(argv[arg],"-l") == 0)
- {
- action = TGZ_LIST;
- if (argc == ++arg)
- help(0);
- }
- else if (strcmp(argv[arg],"-h") == 0)
- {
- help(0);
- }
-
- if ((TGZfile = TGZfname(argv[arg])) == NULL)
- TGZnotfound(argv[arg]);
-
- ++arg;
- if ((action == TGZ_LIST) && (arg != argc))
- help(1);
-
-/*
- * Process the TGZ file
- */
- switch(action)
- {
- case TGZ_LIST:
- case TGZ_EXTRACT:
- f = gzopen(TGZfile,"rb");
- if (f == NULL)
- {
- fprintf(stderr,"%s: Couldn't gzopen %s\n",prog,TGZfile);
- return 1;
- }
- exit(tar(f, action, arg, argc, argv));
- break;
-
- default:
- error("Unknown option");
- exit(1);
- }
-
- return 0;
-}
projects / ossec-hids.git / blobdiff