int vcpio_rd(ARCHD *arcn, char *buf) { HD_VCPIO *hd; dev_t devminor; dev_t devmajor; int nsz; /* * during the id phase it was determined if we were using CRC, use the * proper id routine. */ if (docrc) { if (crc_id(buf, sizeof(HD_VCPIO)) < 0) return(-1); } else { if (vcpio_id(buf, sizeof(HD_VCPIO)) < 0) return(-1); } hd = (HD_VCPIO *)buf; arcn->pad = 0L; /* * extract the hex ascii fields from the header */ arcn->sb.st_ino = (ino_t)asc_ul(hd->c_ino, sizeof(hd->c_ino), HEX); arcn->sb.st_mode = (mode_t)asc_ul(hd->c_mode, sizeof(hd->c_mode), HEX); arcn->sb.st_uid = (uid_t)asc_ul(hd->c_uid, sizeof(hd->c_uid), HEX); arcn->sb.st_gid = (gid_t)asc_ul(hd->c_gid, sizeof(hd->c_gid), HEX); #ifdef NET2_STAT arcn->sb.st_mtime = (time_t)asc_ul(hd->c_mtime,sizeof(hd->c_mtime),HEX); #else arcn->sb.st_mtime = (time_t)asc_uqd(hd->c_mtime,sizeof(hd->c_mtime),HEX); #endif arcn->sb.st_ctime = arcn->sb.st_atime = arcn->sb.st_mtime; #ifdef NET2_STAT arcn->sb.st_size = (off_t)asc_ul(hd->c_filesize, sizeof(hd->c_filesize), HEX); #else arcn->sb.st_size = (off_t)asc_uqd(hd->c_filesize, sizeof(hd->c_filesize), HEX); #endif arcn->sb.st_nlink = (nlink_t)asc_ul(hd->c_nlink, sizeof(hd->c_nlink), HEX); devmajor = (dev_t)asc_ul(hd->c_maj, sizeof(hd->c_maj), HEX); devminor = (dev_t)asc_ul(hd->c_min, sizeof(hd->c_min), HEX); arcn->sb.st_dev = TODEV(devmajor, devminor); devmajor = (dev_t)asc_ul(hd->c_rmaj, sizeof(hd->c_maj), HEX); devminor = (dev_t)asc_ul(hd->c_rmin, sizeof(hd->c_min), HEX); arcn->sb.st_rdev = TODEV(devmajor, devminor); arcn->crc = asc_ul(hd->c_chksum, sizeof(hd->c_chksum), HEX); /* * check the length of the file name, if ok read it in, return -1 if * bogus */ if ((nsz = (int)asc_ul(hd->c_namesize,sizeof(hd->c_namesize),HEX)) < 2) return(-1); arcn->nlen = nsz - 1; if (rd_nm(arcn, nsz) < 0) return(-1); /* * skip padding. header + filename is aligned to 4 byte boundries */ if (rd_skip((off_t)(VCPIO_PAD(sizeof(HD_VCPIO) + nsz))) < 0) return(-1); /* * if not a link (or a file with no data), calculate pad size (for * padding which follows the file data), clear the link name and return */ if (((arcn->sb.st_mode&C_IFMT) != C_ISLNK)||(arcn->sb.st_size == 0)) { /* * we have a valid header (not a link) */ arcn->ln_nlen = 0; arcn->ln_name[0] = '\0'; arcn->pad = VCPIO_PAD(arcn->sb.st_size); return(com_rd(arcn)); } /* * read in the link name and skip over the padding */ if ((rd_ln_nm(arcn) < 0) || (rd_skip((off_t)(VCPIO_PAD(arcn->sb.st_size))) < 0)) return(-1); /* * we have a valid header (with a link) */ return(com_rd(arcn)); }
int ustar_rd(ARCHD *arcn, char *buf) { HD_USTAR *hd = (HD_USTAR *)buf; char *dest; int cnt = 0; dev_t devmajor; dev_t devminor; unsigned long long val; /* * we only get proper sized buffers */ if (ustar_id(buf, BLKMULT) < 0) return(-1); #ifndef SMALL reset: #endif memset(arcn, 0, sizeof(*arcn)); arcn->org_name = arcn->name; arcn->sb.st_nlink = 1; #ifndef SMALL /* Process Extended headers. */ if (hd->typeflag == XHDRTYPE || hd->typeflag == GHDRTYPE) { if (rd_xheader(arcn, hd->typeflag == GHDRTYPE, (off_t)asc_ul(hd->size, sizeof(hd->size), OCT)) < 0) return (-1); /* Update and check the ustar header. */ if (rd_wrbuf(buf, BLKMULT) != BLKMULT) return (-1); if (ustar_id(buf, BLKMULT) < 0) return(-1); /* if the next block is another extension, reset the values */ if (hd->typeflag == XHDRTYPE || hd->typeflag == GHDRTYPE) goto reset; } #endif if (!arcn->nlen) { /* * See if the filename is split into two parts. if, so join * the parts. We copy the prefix first and add a / between * the prefix and name. */ dest = arcn->name; if (*(hd->prefix) != '\0') { cnt = fieldcpy(dest, sizeof(arcn->name) - 1, hd->prefix, sizeof(hd->prefix)); dest += cnt; *dest++ = '/'; cnt++; } else cnt = 0; if (hd->typeflag != LONGLINKTYPE && hd->typeflag != LONGNAMETYPE) { arcn->nlen = cnt + expandname(dest, sizeof(arcn->name) - cnt, &gnu_name_string, hd->name, sizeof(hd->name)); } } if (!arcn->ln_nlen && hd->typeflag != LONGLINKTYPE && hd->typeflag != LONGNAMETYPE) { arcn->ln_nlen = expandname(arcn->ln_name, sizeof(arcn->ln_name), &gnu_link_string, hd->linkname, sizeof(hd->linkname)); } /* * follow the spec to the letter. we should only have mode bits, strip * off all other crud we may be passed. */ arcn->sb.st_mode = (mode_t)(asc_ul(hd->mode, sizeof(hd->mode), OCT) & 0xfff); arcn->sb.st_size = (off_t)asc_ull(hd->size, sizeof(hd->size), OCT); val = asc_ull(hd->mtime, sizeof(hd->mtime), OCT); if (val > MAX_TIME_T) arcn->sb.st_mtime = INT_MAX; /* XXX 2038 */ else arcn->sb.st_mtime = val; arcn->sb.st_ctime = arcn->sb.st_atime = arcn->sb.st_mtime; /* * If we can find the ascii names for gname and uname in the password * and group files we will use the uid's and gid they bind. Otherwise * we use the uid and gid values stored in the header. (This is what * the posix spec wants). */ hd->gname[sizeof(hd->gname) - 1] = '\0'; if (Nflag || gid_name(hd->gname, &(arcn->sb.st_gid)) < 0) arcn->sb.st_gid = (gid_t)asc_ul(hd->gid, sizeof(hd->gid), OCT); hd->uname[sizeof(hd->uname) - 1] = '\0'; if (Nflag || uid_name(hd->uname, &(arcn->sb.st_uid)) < 0) arcn->sb.st_uid = (uid_t)asc_ul(hd->uid, sizeof(hd->uid), OCT); /* * set the defaults, these may be changed depending on the file type */ arcn->pad = 0; arcn->skip = 0; arcn->sb.st_rdev = (dev_t)0; /* * set the mode and PAX type according to the typeflag in the header */ switch (hd->typeflag) { case FIFOTYPE: arcn->type = PAX_FIF; arcn->sb.st_mode |= S_IFIFO; break; case DIRTYPE: arcn->type = PAX_DIR; arcn->sb.st_mode |= S_IFDIR; arcn->sb.st_nlink = 2; /* * Some programs that create ustar archives append a '/' * to the pathname for directories. This clearly violates * ustar specs, but we will silently strip it off anyway. */ if (arcn->name[arcn->nlen - 1] == '/') arcn->name[--arcn->nlen] = '\0'; break; case BLKTYPE: case CHRTYPE: /* * this type requires the rdev field to be set. */ if (hd->typeflag == BLKTYPE) { arcn->type = PAX_BLK; arcn->sb.st_mode |= S_IFBLK; } else { arcn->type = PAX_CHR; arcn->sb.st_mode |= S_IFCHR; } devmajor = (dev_t)asc_ul(hd->devmajor,sizeof(hd->devmajor),OCT); devminor = (dev_t)asc_ul(hd->devminor,sizeof(hd->devminor),OCT); arcn->sb.st_rdev = TODEV(devmajor, devminor); break; case SYMTYPE: case LNKTYPE: if (hd->typeflag == SYMTYPE) { arcn->type = PAX_SLK; arcn->sb.st_mode |= S_IFLNK; } else { arcn->type = PAX_HLK; /* * so printing looks better */ arcn->sb.st_mode |= S_IFREG; arcn->sb.st_nlink = 2; } break; case LONGLINKTYPE: case LONGNAMETYPE: /* * GNU long link/file; we tag these here and let the * pax internals deal with it -- too ugly otherwise. */ arcn->type = hd->typeflag == LONGLINKTYPE ? PAX_GLL : PAX_GLF; arcn->pad = TAR_PAD(arcn->sb.st_size); arcn->skip = arcn->sb.st_size; break; case CONTTYPE: case AREGTYPE: case REGTYPE: default: /* * these types have file data that follows. Set the skip and * pad fields. */ arcn->type = PAX_REG; arcn->pad = TAR_PAD(arcn->sb.st_size); arcn->skip = arcn->sb.st_size; arcn->sb.st_mode |= S_IFREG; break; } return(0); }
int cpio_rd(ARCHD *arcn, char *buf) { int nsz; HD_CPIO *hd; /* * check that this is a valid header, if not return -1 */ if (cpio_id(buf, sizeof(HD_CPIO)) < 0) return(-1); hd = (HD_CPIO *)buf; /* * byte oriented cpio (posix) does not have padding! extract the octal * ascii fields from the header */ arcn->pad = 0L; arcn->sb.st_dev = (dev_t)asc_ul(hd->c_dev, sizeof(hd->c_dev), OCT); arcn->sb.st_ino = (ino_t)asc_ul(hd->c_ino, sizeof(hd->c_ino), OCT); arcn->sb.st_mode = (mode_t)asc_ul(hd->c_mode, sizeof(hd->c_mode), OCT); arcn->sb.st_uid = (uid_t)asc_ul(hd->c_uid, sizeof(hd->c_uid), OCT); arcn->sb.st_gid = (gid_t)asc_ul(hd->c_gid, sizeof(hd->c_gid), OCT); arcn->sb.st_nlink = (nlink_t)asc_ul(hd->c_nlink, sizeof(hd->c_nlink), OCT); arcn->sb.st_rdev = (dev_t)asc_ul(hd->c_rdev, sizeof(hd->c_rdev), OCT); #ifdef NET2_STAT arcn->sb.st_mtime = (time_t)asc_ul(hd->c_mtime, sizeof(hd->c_mtime), OCT); #else arcn->sb.st_mtime = (time_t)asc_uqd(hd->c_mtime, sizeof(hd->c_mtime), OCT); #endif arcn->sb.st_ctime = arcn->sb.st_atime = arcn->sb.st_mtime; #ifdef NET2_STAT arcn->sb.st_size = (off_t)asc_ul(hd->c_filesize,sizeof(hd->c_filesize), OCT); #else arcn->sb.st_size = (off_t)asc_uqd(hd->c_filesize,sizeof(hd->c_filesize), OCT); #endif /* * check name size and if valid, read in the name of this entry (name * follows header in the archive) */ if ((nsz = (int)asc_ul(hd->c_namesize,sizeof(hd->c_namesize),OCT)) < 2) return(-1); arcn->nlen = nsz - 1; if (rd_nm(arcn, nsz) < 0) return(-1); if (((arcn->sb.st_mode&C_IFMT) != C_ISLNK)||(arcn->sb.st_size == 0)) { /* * no link name to read for this file */ arcn->ln_nlen = 0; arcn->ln_name[0] = '\0'; return(com_rd(arcn)); } /* * check link name size and read in the link name. Link names are * stored like file data. */ if (rd_ln_nm(arcn) < 0) return(-1); /* * we have a valid header (with a link) */ return(com_rd(arcn)); }
int tar_rd(ARCHD *arcn, char *buf) { HD_TAR *hd; unsigned long long val; char *pt; /* * we only get proper sized buffers passed to us */ if (tar_id(buf, BLKMULT) < 0) return(-1); memset(arcn, 0, sizeof(*arcn)); arcn->org_name = arcn->name; arcn->sb.st_nlink = 1; /* * copy out the name and values in the stat buffer */ hd = (HD_TAR *)buf; if (hd->linkflag != LONGLINKTYPE && hd->linkflag != LONGNAMETYPE) { arcn->nlen = expandname(arcn->name, sizeof(arcn->name), &gnu_name_string, hd->name, sizeof(hd->name)); arcn->ln_nlen = expandname(arcn->ln_name, sizeof(arcn->ln_name), &gnu_link_string, hd->linkname, sizeof(hd->linkname)); } arcn->sb.st_mode = (mode_t)(asc_ul(hd->mode,sizeof(hd->mode),OCT) & 0xfff); arcn->sb.st_uid = (uid_t)asc_ul(hd->uid, sizeof(hd->uid), OCT); arcn->sb.st_gid = (gid_t)asc_ul(hd->gid, sizeof(hd->gid), OCT); arcn->sb.st_size = (off_t)asc_ull(hd->size, sizeof(hd->size), OCT); val = asc_ull(hd->mtime, sizeof(hd->mtime), OCT); if (val > MAX_TIME_T) arcn->sb.st_mtime = INT_MAX; /* XXX 2038 */ else arcn->sb.st_mtime = val; arcn->sb.st_ctime = arcn->sb.st_atime = arcn->sb.st_mtime; /* * have to look at the last character, it may be a '/' and that is used * to encode this as a directory */ pt = &(arcn->name[arcn->nlen - 1]); arcn->pad = 0; arcn->skip = 0; switch (hd->linkflag) { case SYMTYPE: /* * symbolic link, need to get the link name and set the type in * the st_mode so -v printing will look correct. */ arcn->type = PAX_SLK; arcn->sb.st_mode |= S_IFLNK; break; case LNKTYPE: /* * hard link, need to get the link name, set the type in the * st_mode and st_nlink so -v printing will look better. */ arcn->type = PAX_HLK; arcn->sb.st_nlink = 2; /* * no idea of what type this thing really points at, but * we set something for printing only. */ arcn->sb.st_mode |= S_IFREG; break; case LONGLINKTYPE: case LONGNAMETYPE: /* * GNU long link/file; we tag these here and let the * pax internals deal with it -- too ugly otherwise. */ arcn->type = hd->linkflag == LONGLINKTYPE ? PAX_GLL : PAX_GLF; arcn->pad = TAR_PAD(arcn->sb.st_size); arcn->skip = arcn->sb.st_size; break; case DIRTYPE: /* * It is a directory, set the mode for -v printing */ arcn->type = PAX_DIR; arcn->sb.st_mode |= S_IFDIR; arcn->sb.st_nlink = 2; break; case AREGTYPE: case REGTYPE: default: /* * If we have a trailing / this is a directory and NOT a file. */ arcn->ln_name[0] = '\0'; arcn->ln_nlen = 0; if (*pt == '/') { /* * it is a directory, set the mode for -v printing */ arcn->type = PAX_DIR; arcn->sb.st_mode |= S_IFDIR; arcn->sb.st_nlink = 2; } else { /* * have a file that will be followed by data. Set the * skip value to the size field and calculate the size * of the padding. */ arcn->type = PAX_REG; arcn->sb.st_mode |= S_IFREG; arcn->pad = TAR_PAD(arcn->sb.st_size); arcn->skip = arcn->sb.st_size; } break; } /* * strip off any trailing slash. */ if (*pt == '/') { *pt = '\0'; --arcn->nlen; } return(0); }