diff options
Diffstat (limited to 'lib/dpkg/t/c-tarextract.c')
| -rw-r--r-- | lib/dpkg/t/c-tarextract.c | 151 |
1 files changed, 151 insertions, 0 deletions
diff --git a/lib/dpkg/t/c-tarextract.c b/lib/dpkg/t/c-tarextract.c new file mode 100644 index 0000000..882253d --- /dev/null +++ b/lib/dpkg/t/c-tarextract.c @@ -0,0 +1,151 @@ +/* + * libdpkg - Debian packaging suite library routines + * c-tarextract.c - test tar extractor + * + * Copyright © 2014 Guillem Jover <guillem@debian.org> + * + * This is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2, + * or (at your option) any later version. + * + * This is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <https://www.gnu.org/licenses/>. + */ + +#include <config.h> +#include <compat.h> + +#include <sys/types.h> +#if HAVE_SYS_SYSMACROS_H +#include <sys/sysmacros.h> /* Needed on AIX for major()/minor(). */ +#endif + +#include <fcntl.h> +#include <stdint.h> +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> + +#include <dpkg/ehandle.h> +#include <dpkg/fdio.h> +#include <dpkg/buffer.h> +#include <dpkg/tarfn.h> + +struct tar_context { + int tar_fd; +}; + +static int +tar_read(struct tar_archive *tar, char *buffer, int size) +{ + struct tar_context *tc = tar->ctx; + + return fd_read(tc->tar_fd, buffer, size); +} + +static int +tar_object_skip(struct tar_archive *tar, struct tar_entry *te) +{ + struct tar_context *tc = tar->ctx; + off_t size; + + size = (te->size + TARBLKSZ - 1) / TARBLKSZ * TARBLKSZ; + if (size == 0) + return 0; + + return fd_skip(tc->tar_fd, size, NULL); +} + +static int +tar_object(struct tar_archive *tar, struct tar_entry *te) +{ + printf("%s mode=%o time=%jd.%.9d uid=%d gid=%d", te->name, + te->stat.mode, te->mtime, 0, te->stat.uid, te->stat.gid); + if (te->stat.uname) + printf(" uname=%s", te->stat.uname); + if (te->stat.gname) + printf(" gname=%s", te->stat.gname); + + switch (te->type) { + case TAR_FILETYPE_FILE0: + case TAR_FILETYPE_FILE: + tar_object_skip(tar, te); + printf(" type=file size=%jd", (intmax_t)te->size); + break; + case TAR_FILETYPE_HARDLINK: + printf(" type=hardlink linkto=%s size=%jd", + te->linkname, (intmax_t)te->size); + break; + case TAR_FILETYPE_SYMLINK: + printf(" type=symlink linkto=%s size=%jd", + te->linkname, (intmax_t)te->size); + break; + case TAR_FILETYPE_DIR: + printf(" type=dir"); + break; + case TAR_FILETYPE_CHARDEV: + case TAR_FILETYPE_BLOCKDEV: + printf(" type=device id=%d.%d", major(te->dev), minor(te->dev)); + break; + case TAR_FILETYPE_FIFO: + printf(" type=fifo"); + break; + default: + ohshit("unexpected tar entry type '%c'", te->type); + } + + printf("\n"); + + return 0; +} + +struct tar_operations tar_ops = { + .read = tar_read, + .extract_file = tar_object, + .link = tar_object, + .symlink = tar_object, + .mkdir = tar_object, + .mknod = tar_object, +}; + +int +main(int argc, char **argv) +{ + struct tar_archive tar; + struct tar_context tar_ctx; + const char *tar_name = argv[1]; + + setvbuf(stdout, NULL, _IOLBF, 0); + + push_error_context(); + + if (tar_name) { + tar_ctx.tar_fd = open(tar_name, O_RDONLY); + if (tar_ctx.tar_fd < 0) + ohshite("cannot open file '%s'", tar_name); + } else { + tar_ctx.tar_fd = STDIN_FILENO; + } + + tar.err = DPKG_ERROR_OBJECT; + tar.ctx = &tar_ctx; + tar.ops = &tar_ops; + + if (tar_extractor(&tar)) + ohshite("extracting tar"); + + dpkg_error_destroy(&tar.err); + + if (tar_name) + close(tar_ctx.tar_fd); + + pop_error_context(ehflag_normaltidy); + + return 0; +} |