mirror of https://github.com/pygos/pkg-utils.git
Add header for high-level package I/O functions
Mov file list from package function into seperate module, move declaration into new high-level header. Signed-off-by: David Oberhollenzer <goliath@infraroot.at>
This commit is contained in:
parent
3a4f19d1c5
commit
be9bfed9b0
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@ -6,11 +6,11 @@ AM_CFLAGS = $(WARN_CFLAGS)
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# application core
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GLOBALHDR = include/pkgformat.h include/util.h include/pkgreader.h
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GLOBALHDR += include/compressor.h include/command.h include/pkgwriter.h
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GLOBALHDR += include/image_entry.h
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GLOBALHDR += include/image_entry.h include/pkgio.h
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MAIN = main/pkg.c main/util.c main/compressor.c main/command.c main/pkgreader.c
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MAIN += main/pkgwriter.c main/image_entry.c main/image_entry_sort.c
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MAIN += main/mkdir_p.c
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MAIN += main/mkdir_p.c main/pkgio_rd_image_entry.c
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pkg_SOURCES = $(GLOBALHDR) $(MAIN)
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pkg_CFLAGS = $(AM_CFLAGS)
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@ -30,8 +30,6 @@ void image_entry_free(image_entry_t *ent);
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void image_entry_free_list(image_entry_t *list);
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image_entry_t *image_entry_list_from_package(pkg_reader_t *pkg);
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image_entry_t *image_entry_sort(image_entry_t *list);
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#endif /* IMAGE_ENTRY_H */
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@ -0,0 +1,9 @@
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#ifndef PKGIO_H
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#define PKGIO_H
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#include "pkgreader.h"
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#include "image_entry.h"
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image_entry_t *image_entry_list_from_package(pkg_reader_t *pkg);
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#endif /* PKGIO_H */
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@ -11,6 +11,7 @@
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#include "pkgformat.h"
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#include "pkgreader.h"
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#include "command.h"
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#include "pkgio.h"
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#include "util.h"
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typedef enum {
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@ -14,6 +14,7 @@
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#include "image_entry.h"
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#include "pkgreader.h"
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#include "command.h"
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#include "pkgio.h"
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#include "util.h"
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enum {
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@ -35,170 +35,3 @@ void image_entry_free_list(image_entry_t *list)
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image_entry_free(ent);
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}
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}
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static int read_extra(pkg_reader_t *pkg, image_entry_t *ent)
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{
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switch (ent->mode & S_IFMT) {
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case S_IFLNK: {
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toc_symlink_extra_t extra;
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char *path;
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int ret;
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ret = pkg_reader_read_payload(pkg, &extra, sizeof(extra));
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if (ret < 0)
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return -1;
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if ((size_t)ret < sizeof(extra))
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goto fail_trunc;
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extra.target_length = le16toh(extra.target_length);
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path = malloc(extra.target_length + 1);
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if (path == NULL)
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goto fail_oom;
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ret = pkg_reader_read_payload(pkg, path, extra.target_length);
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if (ret < 0)
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return -1;
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if ((size_t)ret < extra.target_length)
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goto fail_trunc;
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path[extra.target_length] = '\0';
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ent->data.symlink.target = path;
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break;
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}
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case S_IFREG: {
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toc_file_extra_t extra;
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int ret;
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ret = pkg_reader_read_payload(pkg, &extra, sizeof(extra));
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if (ret < 0)
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return -1;
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if ((size_t)ret < sizeof(extra))
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goto fail_trunc;
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ent->data.file.size = le64toh(extra.size);
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ent->data.file.id = le32toh(extra.id);
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break;
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}
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case S_IFDIR:
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break;
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default:
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goto fail_unknown;
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}
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return 0;
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fail_unknown:
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fprintf(stderr, "%s: unsupported file type in table of contents\n",
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pkg_reader_get_filename(pkg));
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return -1;
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fail_oom:
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fputs("out of memory\n", stderr);
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return -1;
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fail_trunc:
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fprintf(stderr, "%s: truncated extra data in table of contents\n",
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pkg_reader_get_filename(pkg));
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return -1;
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}
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image_entry_t *image_entry_list_from_package(pkg_reader_t *pkg)
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{
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image_entry_t *list = NULL, *end = NULL, *imgent;
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toc_entry_t ent;
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record_t *hdr;
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ssize_t ret;
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char *path;
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if (pkg_reader_rewind(pkg))
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return NULL;
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do {
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if (pkg_reader_get_next_record(pkg) <= 0)
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return NULL;
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hdr = pkg_reader_current_record_header(pkg);
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} while (hdr->magic != PKG_MAGIC_TOC);
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for (;;) {
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ret = pkg_reader_read_payload(pkg, &ent, sizeof(ent));
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if (ret == 0)
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break;
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if (ret < 0)
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goto fail;
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if ((size_t)ret < sizeof(ent))
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goto fail_trunc;
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ent.mode = le32toh(ent.mode);
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ent.uid = le32toh(ent.uid);
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ent.gid = le32toh(ent.gid);
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ent.path_length = le16toh(ent.path_length);
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path = malloc(ent.path_length + 1);
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if (path == NULL)
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goto fail_oom;
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ret = pkg_reader_read_payload(pkg, path, ent.path_length);
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if (ret < 0)
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goto fail;
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if ((size_t)ret < ent.path_length)
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goto fail_trunc;
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path[ent.path_length] = '\0';
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if (canonicalize_name(path)) {
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fprintf(stderr,
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"%s: invalid file path '%s' in package\n",
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pkg_reader_get_filename(pkg), path);
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free(path);
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goto fail;
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}
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imgent = calloc(1, sizeof(*imgent));
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if (imgent == NULL) {
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free(path);
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goto fail_oom;
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}
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imgent->name = path;
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imgent->mode = ent.mode;
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imgent->uid = ent.uid;
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imgent->gid = ent.gid;
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if (read_extra(pkg, imgent)) {
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image_entry_free(imgent);
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goto fail;
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}
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if (list) {
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end->next = imgent;
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end = imgent;
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} else {
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list = end = imgent;
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}
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}
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for (;;) {
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ret = pkg_reader_get_next_record(pkg);
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if (ret == 0)
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break;
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if (ret < 0)
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goto fail;
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hdr = pkg_reader_current_record_header(pkg);
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if (hdr->magic == PKG_MAGIC_TOC)
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goto fail_multi;
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}
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return list;
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fail_oom:
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fputs("out of memory\n", stderr);
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goto fail;
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fail_trunc:
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fprintf(stderr, "%s: truncated entry in table of contents\n",
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pkg_reader_get_filename(pkg));
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goto fail;
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fail_multi:
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fprintf(stderr, "%s: multiple table of contents entries found\n",
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pkg_reader_get_filename(pkg));
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goto fail;
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fail:
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image_entry_free_list(list);
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return NULL;
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}
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@ -0,0 +1,174 @@
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include "pkgio.h"
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#include "util.h"
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static int read_extra(pkg_reader_t *pkg, image_entry_t *ent)
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{
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switch (ent->mode & S_IFMT) {
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case S_IFLNK: {
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toc_symlink_extra_t extra;
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char *path;
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int ret;
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ret = pkg_reader_read_payload(pkg, &extra, sizeof(extra));
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if (ret < 0)
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return -1;
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if ((size_t)ret < sizeof(extra))
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goto fail_trunc;
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extra.target_length = le16toh(extra.target_length);
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path = malloc(extra.target_length + 1);
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if (path == NULL)
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goto fail_oom;
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ret = pkg_reader_read_payload(pkg, path, extra.target_length);
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if (ret < 0)
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return -1;
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if ((size_t)ret < extra.target_length)
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goto fail_trunc;
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path[extra.target_length] = '\0';
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ent->data.symlink.target = path;
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break;
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}
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case S_IFREG: {
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toc_file_extra_t extra;
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int ret;
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ret = pkg_reader_read_payload(pkg, &extra, sizeof(extra));
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if (ret < 0)
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return -1;
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if ((size_t)ret < sizeof(extra))
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goto fail_trunc;
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ent->data.file.size = le64toh(extra.size);
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ent->data.file.id = le32toh(extra.id);
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break;
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}
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case S_IFDIR:
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break;
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default:
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goto fail_unknown;
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}
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return 0;
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fail_unknown:
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fprintf(stderr, "%s: unsupported file type in table of contents\n",
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pkg_reader_get_filename(pkg));
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return -1;
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fail_oom:
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fputs("out of memory\n", stderr);
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return -1;
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fail_trunc:
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fprintf(stderr, "%s: truncated extra data in table of contents\n",
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pkg_reader_get_filename(pkg));
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return -1;
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}
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image_entry_t *image_entry_list_from_package(pkg_reader_t *pkg)
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{
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image_entry_t *list = NULL, *end = NULL, *imgent;
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toc_entry_t ent;
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record_t *hdr;
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ssize_t ret;
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char *path;
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if (pkg_reader_rewind(pkg))
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return NULL;
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do {
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if (pkg_reader_get_next_record(pkg) <= 0)
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return NULL;
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hdr = pkg_reader_current_record_header(pkg);
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} while (hdr->magic != PKG_MAGIC_TOC);
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for (;;) {
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ret = pkg_reader_read_payload(pkg, &ent, sizeof(ent));
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if (ret == 0)
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break;
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if (ret < 0)
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goto fail;
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if ((size_t)ret < sizeof(ent))
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goto fail_trunc;
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ent.mode = le32toh(ent.mode);
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ent.uid = le32toh(ent.uid);
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ent.gid = le32toh(ent.gid);
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ent.path_length = le16toh(ent.path_length);
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path = malloc(ent.path_length + 1);
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if (path == NULL)
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goto fail_oom;
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ret = pkg_reader_read_payload(pkg, path, ent.path_length);
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if (ret < 0)
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goto fail;
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if ((size_t)ret < ent.path_length)
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goto fail_trunc;
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path[ent.path_length] = '\0';
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if (canonicalize_name(path)) {
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fprintf(stderr,
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"%s: invalid file path '%s' in package\n",
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pkg_reader_get_filename(pkg), path);
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free(path);
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goto fail;
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}
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imgent = calloc(1, sizeof(*imgent));
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if (imgent == NULL) {
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free(path);
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goto fail_oom;
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}
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imgent->name = path;
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imgent->mode = ent.mode;
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imgent->uid = ent.uid;
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imgent->gid = ent.gid;
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if (read_extra(pkg, imgent)) {
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image_entry_free(imgent);
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goto fail;
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}
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if (list) {
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end->next = imgent;
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end = imgent;
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} else {
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list = end = imgent;
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}
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}
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for (;;) {
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ret = pkg_reader_get_next_record(pkg);
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if (ret == 0)
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break;
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if (ret < 0)
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goto fail;
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hdr = pkg_reader_current_record_header(pkg);
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if (hdr->magic == PKG_MAGIC_TOC)
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goto fail_multi;
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}
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return list;
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fail_oom:
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fputs("out of memory\n", stderr);
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goto fail;
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fail_trunc:
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fprintf(stderr, "%s: truncated entry in table of contents\n",
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pkg_reader_get_filename(pkg));
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goto fail;
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fail_multi:
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fprintf(stderr, "%s: multiple table of contents entries found\n",
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pkg_reader_get_filename(pkg));
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goto fail;
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fail:
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image_entry_free_list(list);
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return NULL;
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}
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