Adding upstream version 1.21.22.upstream/1.21.22upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 291 insertions, 0 deletions

diff --git a/src/split/info.c b/src/split/info.c
new file mode 100644
index 0000000..73fbd69
--- /dev/null
+++ b/src/split/info.c
@@ -0,0 +1,291 @@
+/*
+ * dpkg-split - splitting and joining of multipart *.deb archives
+ * info.c - information about split archives
+ *
+ * Copyright © 1995 Ian Jackson <ijackson@chiark.greenend.org.uk>
+ * Copyright © 2008-2012 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 of the License, 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/stat.h>
+
+#include <errno.h>
+#include <limits.h>
+#include <string.h>
+#include <unistd.h>
+#include <inttypes.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+#include <dpkg/i18n.h>
+#include <dpkg/c-ctype.h>
+#include <dpkg/dpkg.h>
+#include <dpkg/dpkg-db.h>
+#include <dpkg/fdio.h>
+#include <dpkg/ar.h>
+#include <dpkg/options.h>
+
+#include "dpkg-split.h"
+
+static intmax_t
+parse_intmax(const char *value, const char *fn, const char *what)
+{
+  intmax_t r;
+  char *endp;
+
+  errno = 0;
+  r = strtoimax(value, &endp, 10);
+  if (value == endp || *endp)
+    ohshit(_("file '%.250s' is corrupt - bad digit (code %d) in %s"),
+           fn, *endp, what);
+  if (r < 0 || errno == ERANGE)
+    ohshit(_("file '%s' is corrupt; out of range integer in %s"), fn, what);
+  return r;
+}
+
+static char *nextline(char **ripp, const char *fn, const char *what) {
+  char *newline, *rip;
+
+  rip= *ripp;
+  if (!rip)
+    ohshit(_("file '%.250s' is corrupt - %.250s missing"), fn, what);
+  newline= strchr(rip,'\n');
+  if (!newline)
+    ohshit(_("file '%.250s' is corrupt - missing newline after %.250s"),
+           fn, what);
+  *ripp= newline+1;
+
+  str_rtrim_spaces(rip, newline);
+
+  return rip;
+}
+
+/**
+ * Read a deb-split part archive.
+ *
+ * @return Part info (nfmalloc'd) if was an archive part and we read it,
+ *         NULL if it wasn't.
+ */
+struct partinfo *
+read_info(struct dpkg_ar *ar, struct partinfo *ir)
+{
+  static char *readinfobuf= NULL;
+  static size_t readinfobuflen= 0;
+
+  size_t thisilen;
+  intmax_t templong;
+  char magicbuf[sizeof(DPKG_AR_MAGIC) - 1], *rip, *partnums, *slash;
+  const char *err;
+  struct dpkg_ar_hdr arh;
+  ssize_t rc;
+
+  rc = fd_read(ar->fd, magicbuf, sizeof(magicbuf));
+  if (rc != sizeof(magicbuf)) {
+    if (rc < 0)
+      ohshite(_("error reading %.250s"), ar->name);
+    else
+      return NULL;
+  }
+  if (memcmp(magicbuf, DPKG_AR_MAGIC, sizeof(magicbuf)))
+    return NULL;
+
+  rc = fd_read(ar->fd, &arh, sizeof(arh));
+  if (rc != sizeof(arh))
+    read_fail(rc, ar->name, "ar header");
+
+  dpkg_ar_normalize_name(&arh);
+
+  if (strncmp(arh.ar_name, PARTMAGIC, sizeof(arh.ar_name)) != 0)
+    return NULL;
+  if (dpkg_ar_member_is_illegal(&arh))
+    ohshit(_("file '%.250s' is corrupt - bad magic at end of first header"),
+           ar->name);
+  thisilen = dpkg_ar_member_get_size(ar, &arh);
+  if (thisilen >= readinfobuflen) {
+    readinfobuflen = thisilen + 2;
+    readinfobuf= m_realloc(readinfobuf,readinfobuflen);
+  }
+  rc = fd_read(ar->fd, readinfobuf, thisilen + (thisilen & 1));
+  if (rc != (ssize_t)(thisilen + (thisilen & 1)))
+    read_fail(rc, ar->name, "reading header member");
+  if (thisilen & 1) {
+    int c = readinfobuf[thisilen];
+
+    if (c != '\n')
+      ohshit(_("file '%.250s' is corrupt - bad padding character (code %d)"),
+             ar->name, c);
+  }
+  readinfobuf[thisilen] = '\0';
+  if (memchr(readinfobuf,0,thisilen))
+    ohshit(_("file '%.250s' is corrupt - nulls in info section"), ar->name);
+
+  ir->filename = ar->name;
+
+  rip= readinfobuf;
+  err = deb_version_parse(&ir->fmtversion,
+                          nextline(&rip, ar->name, _("format version number")));
+  if (err)
+    ohshit(_("file '%.250s' has invalid format version: %s"), ar->name, err);
+  if (ir->fmtversion.major != 2)
+    ohshit(_("file '%.250s' is format version %d.%d; get a newer dpkg-split"),
+           ar->name, ir->fmtversion.major, ir->fmtversion.minor);
+
+  ir->package = nfstrsave(nextline(&rip, ar->name, _("package name")));
+  ir->version = nfstrsave(nextline(&rip, ar->name, _("package version number")));
+  ir->md5sum = nfstrsave(nextline(&rip, ar->name, _("package file MD5 checksum")));
+  if (strlen(ir->md5sum) != MD5HASHLEN ||
+      strspn(ir->md5sum, "0123456789abcdef") != MD5HASHLEN)
+    ohshit(_("file '%.250s' is corrupt - bad MD5 checksum '%.250s'"),
+           ar->name, ir->md5sum);
+
+  ir->orglength = parse_intmax(nextline(&rip, ar->name, _("archive total size")),
+                               ar->name, _("archive total size"));
+  ir->maxpartlen = parse_intmax(nextline(&rip, ar->name, _("archive part offset")),
+                                ar->name, _("archive part offset"));
+
+  partnums = nextline(&rip, ar->name, _("archive part numbers"));
+  slash= strchr(partnums,'/');
+  if (!slash)
+    ohshit(_("file '%.250s' is corrupt - no slash between archive part numbers"), ar->name);
+  *slash++ = '\0';
+
+  templong = parse_intmax(slash, ar->name, _("number of archive parts"));
+  if (templong <= 0 || templong > INT_MAX)
+    ohshit(_("file '%.250s' is corrupt - bad number of archive parts"), ar->name);
+  ir->maxpartn= templong;
+  templong = parse_intmax(partnums, ar->name, _("archive parts number"));
+  if (templong <= 0 || templong > ir->maxpartn)
+    ohshit(_("file '%.250s' is corrupt - bad archive part number"), ar->name);
+  ir->thispartn= templong;
+
+  /* If the package was created with dpkg 1.16.1 or later it will include
+   * the architecture. */
+  if (*rip != '\0')
+    ir->arch = nfstrsave(nextline(&rip, ar->name, _("package architecture")));
+  else
+    ir->arch = NULL;
+
+  rc = fd_read(ar->fd, &arh, sizeof(arh));
+  if (rc != sizeof(arh))
+    read_fail(rc, ar->name, "reading data part member ar header");
+
+  dpkg_ar_normalize_name(&arh);
+
+  if (dpkg_ar_member_is_illegal(&arh))
+    ohshit(_("file '%.250s' is corrupt - bad magic at end of second header"),
+           ar->name);
+  if (strncmp(arh.ar_name,"data",4))
+    ohshit(_("file '%.250s' is corrupt - second member is not data member"),
+           ar->name);
+
+  ir->thispartlen = dpkg_ar_member_get_size(ar, &arh);
+  ir->thispartoffset= (ir->thispartn-1)*ir->maxpartlen;
+
+  if (ir->maxpartn != (ir->orglength+ir->maxpartlen-1)/ir->maxpartlen)
+    ohshit(_("file '%.250s' is corrupt - wrong number of parts for quoted sizes"),
+           ar->name);
+  if (ir->thispartlen !=
+      (ir->thispartn == ir->maxpartn
+       ? ir->orglength - ir->thispartoffset : ir->maxpartlen))
+    ohshit(_("file '%.250s' is corrupt - size is wrong for quoted part number"),
+           ar->name);
+
+  ir->filesize = (strlen(DPKG_AR_MAGIC) +
+                  sizeof(arh) + thisilen + (thisilen & 1) +
+                  sizeof(arh) + ir->thispartlen + (ir->thispartlen & 1));
+
+  if (S_ISREG(ar->mode)) {
+    /* Don't do this check if it's coming from a pipe or something.  It's
+     * only an extra sanity check anyway. */
+    if (ar->size < ir->filesize)
+      ohshit(_("file '%.250s' is corrupt - too short"), ar->name);
+  }
+
+  ir->headerlen = strlen(DPKG_AR_MAGIC) +
+                  sizeof(arh) + thisilen + (thisilen & 1) + sizeof(arh);
+
+  return ir;
+}
+
+void mustgetpartinfo(const char *filename, struct partinfo *ri) {
+  struct dpkg_ar *part;
+
+  part = dpkg_ar_open(filename);
+  if (!part)
+    ohshite(_("cannot open archive part file '%.250s'"), filename);
+  if (!read_info(part, ri))
+    ohshite(_("file '%.250s' is not an archive part"), filename);
+  dpkg_ar_close(part);
+}
+
+void print_info(const struct partinfo *pi) {
+  printf(_("%s:\n"
+         "    Part format version:            %d.%d\n"
+         "    Part of package:                %s\n"
+         "        ... version:                %s\n"
+         "        ... architecture:           %s\n"
+         "        ... MD5 checksum:           %s\n"
+         "        ... length:                 %jd bytes\n"
+         "        ... split every:            %jd bytes\n"
+         "    Part number:                    %d/%d\n"
+         "    Part length:                    %jd bytes\n"
+         "    Part offset:                    %jd bytes\n"
+         "    Part file size (used portion):  %jd bytes\n\n"),
+         pi->filename,
+         pi->fmtversion.major, pi->fmtversion.minor,
+         pi->package,
+         pi->version,
+         pi->arch ? pi->arch : C_("architecture", "<unknown>"),
+         pi->md5sum,
+         (intmax_t)pi->orglength,
+         (intmax_t)pi->maxpartlen,
+         pi->thispartn,
+         pi->maxpartn,
+         (intmax_t)pi->thispartlen,
+         (intmax_t)pi->thispartoffset,
+         (intmax_t)pi->filesize);
+}
+
+int
+do_info(const char *const *argv)
+{
+  const char *thisarg;
+  struct partinfo *pi, ps;
+  struct dpkg_ar *part;
+
+  if (!*argv)
+    badusage(_("--%s requires one or more part file arguments"),
+             cipaction->olong);
+
+  while ((thisarg= *argv++)) {
+    part = dpkg_ar_open(thisarg);
+    if (!part)
+      ohshite(_("cannot open archive part file '%.250s'"), thisarg);
+    pi = read_info(part, &ps);
+    dpkg_ar_close(part);
+    if (pi) {
+      print_info(pi);
+    } else {
+      printf(_("file '%s' is not an archive part\n"), thisarg);
+    }
+    m_output(stdout, _("<standard output>"));
+  }
+
+  return 0;
+}