Adding upstream version 1.19.8.upstream/1.19.8upstream

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

1 files changed, 356 insertions, 0 deletions

diff --git a/src/help.c b/src/help.c
new file mode 100644
index 0000000..382b363
--- /dev/null
+++ b/src/help.c
@@ -0,0 +1,356 @@
+/*
+ * dpkg - main program for package management
+ * help.c - various helper routines
+ *
+ * Copyright © 1995 Ian Jackson <ijackson@chiark.greenend.org.uk>
+ * Copyright © 2007-2015 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/types.h>
+#include <sys/stat.h>
+
+#include <errno.h>
+#include <string.h>
+#include <unistd.h>
+#include <stdlib.h>
+
+#include <dpkg/i18n.h>
+#include <dpkg/dpkg.h>
+#include <dpkg/dpkg-db.h>
+#include <dpkg/path.h>
+#include <dpkg/db-fsys.h>
+
+#include "main.h"
+
+const char *const statusstrings[]= {
+  [PKG_STAT_NOTINSTALLED]    = N_("not installed"),
+  [PKG_STAT_CONFIGFILES]     = N_("not installed but configs remain"),
+  [PKG_STAT_HALFINSTALLED]   = N_("broken due to failed removal or installation"),
+  [PKG_STAT_UNPACKED]        = N_("unpacked but not configured"),
+  [PKG_STAT_HALFCONFIGURED]  = N_("broken due to postinst failure"),
+  [PKG_STAT_TRIGGERSAWAITED] = N_("awaiting trigger processing by another package"),
+  [PKG_STAT_TRIGGERSPENDING] = N_("triggered"),
+  [PKG_STAT_INSTALLED]       = N_("installed")
+};
+
+struct fsys_namenode *
+namenodetouse(struct fsys_namenode *namenode, struct pkginfo *pkg,
+              struct pkgbin *pkgbin)
+{
+  struct fsys_namenode *fnn;
+
+  if (!namenode->divert)
+    return namenode;
+
+  debug(dbg_eachfile, "namenodetouse namenode='%s' pkg=%s",
+        namenode->name, pkgbin_name(pkg, pkgbin, pnaw_always));
+
+  fnn = (namenode->divert->useinstead && namenode->divert->pkgset != pkg->set)
+        ? namenode->divert->useinstead : namenode;
+
+  debug(dbg_eachfile,
+        "namenodetouse ... useinstead=%s camefrom=%s pkg=%s return %s",
+        namenode->divert->useinstead ? namenode->divert->useinstead->name : "<none>",
+        namenode->divert->camefrom ? namenode->divert->camefrom->name : "<none>",
+        namenode->divert->pkgset ? namenode->divert->pkgset->name : "<none>",
+        fnn->name);
+
+  return fnn;
+}
+
+bool
+find_command(const char *prog)
+{
+  struct varbuf filename = VARBUF_INIT;
+  struct stat stab;
+  const char *path_list;
+  const char *path, *path_end;
+  size_t path_len;
+
+  path_list = getenv("PATH");
+  if (!path_list)
+    ohshit(_("PATH is not set"));
+
+  for (path = path_list; path; path = *path_end ? path_end + 1 : NULL) {
+    path_end = strchrnul(path, ':');
+    path_len = (size_t)(path_end - path);
+
+    varbuf_reset(&filename);
+    varbuf_add_buf(&filename, path, path_len);
+    if (path_len)
+      varbuf_add_char(&filename, '/');
+    varbuf_add_str(&filename, prog);
+    varbuf_end_str(&filename);
+
+    if (stat(filename.buf, &stab) == 0 && (stab.st_mode & 0111)) {
+      varbuf_destroy(&filename);
+      return true;
+    }
+  }
+
+  varbuf_destroy(&filename);
+  return false;
+}
+
+/**
+ * Verify that some programs can be found in the PATH.
+ */
+void checkpath(void) {
+  static const char *const prog_list[] = {
+    DEFAULTSHELL,
+    RM,
+    TAR,
+    DIFF,
+    BACKEND,
+    /* Mac OS X uses dyld (Mach-O) instead of ld.so (ELF), and does not have
+     * an ldconfig. */
+#if defined(__APPLE__) && defined(__MACH__)
+    "update_dyld_shared_cache",
+#elif defined(__GLIBC__) || defined(__UCLIBC__) || \
+      defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__NetBSD__)
+    "ldconfig",
+#endif
+#if BUILD_START_STOP_DAEMON
+    "start-stop-daemon",
+#endif
+    NULL
+  };
+
+  const char *const *prog;
+  int warned= 0;
+
+  for (prog = prog_list; *prog; prog++) {
+    if (!find_command(*prog)) {
+      warning(_("'%s' not found in PATH or not executable"), *prog);
+      warned++;
+    }
+  }
+
+  if (warned)
+    forcibleerr(FORCE_BAD_PATH,
+                P_("%d expected program not found in PATH or not executable\n%s",
+                   "%d expected programs not found in PATH or not executable\n%s",
+                   warned),
+                warned, _("Note: root's PATH should usually contain "
+                          "/usr/local/sbin, /usr/sbin and /sbin"));
+}
+
+bool
+ignore_depends(struct pkginfo *pkg)
+{
+  struct pkg_list *id;
+  for (id= ignoredependss; id; id= id->next)
+    if (id->pkg == pkg)
+      return true;
+  return false;
+}
+
+static bool
+ignore_depends_possi(struct deppossi *possi)
+{
+  struct deppossi_pkg_iterator *possi_iter;
+  struct pkginfo *pkg;
+
+  possi_iter = deppossi_pkg_iter_new(possi, wpb_installed);
+  while ((pkg = deppossi_pkg_iter_next(possi_iter))) {
+    if (ignore_depends(pkg)) {
+      deppossi_pkg_iter_free(possi_iter);
+      return true;
+    }
+  }
+  deppossi_pkg_iter_free(possi_iter);
+
+  return false;
+}
+
+bool
+force_depends(struct deppossi *possi)
+{
+  return in_force(FORCE_DEPENDS) ||
+         ignore_depends_possi(possi) ||
+         ignore_depends(possi->up->up);
+}
+
+bool
+force_breaks(struct deppossi *possi)
+{
+  return in_force(FORCE_BREAKS) ||
+         ignore_depends_possi(possi) ||
+         ignore_depends(possi->up->up);
+}
+
+bool
+force_conflicts(struct deppossi *possi)
+{
+  return in_force(FORCE_CONFLICTS);
+}
+
+void clear_istobes(void) {
+  struct pkg_hash_iter *iter;
+  struct pkginfo *pkg;
+
+  iter = pkg_hash_iter_new();
+  while ((pkg = pkg_hash_iter_next_pkg(iter)) != NULL) {
+    ensure_package_clientdata(pkg);
+    pkg->clientdata->istobe = PKG_ISTOBE_NORMAL;
+    pkg->clientdata->replacingfilesandsaid= 0;
+  }
+  pkg_hash_iter_free(iter);
+}
+
+/*
+ * Returns true if the directory contains conffiles belonging to pkg,
+ * false otherwise.
+ */
+bool
+dir_has_conffiles(struct fsys_namenode *file, struct pkginfo *pkg)
+{
+  struct conffile *conff;
+  size_t namelen;
+
+  debug(dbg_veryverbose, "dir_has_conffiles '%s' (from %s)", file->name,
+        pkg_name(pkg, pnaw_always));
+  namelen = strlen(file->name);
+  for (conff= pkg->installed.conffiles; conff; conff= conff->next) {
+      if (conff->obsolete)
+        continue;
+      if (strncmp(file->name, conff->name, namelen) == 0 &&
+          strlen(conff->name) > namelen && conff->name[namelen] == '/') {
+	debug(dbg_veryverbose, "directory %s has conffile %s from %s",
+	      file->name, conff->name, pkg_name(pkg, pnaw_always));
+	return true;
+      }
+  }
+  debug(dbg_veryverbose, "dir_has_conffiles no");
+  return false;
+}
+
+/*
+ * Returns true if the file is used by packages other than pkg,
+ * false otherwise.
+ */
+bool
+dir_is_used_by_others(struct fsys_namenode *file, struct pkginfo *pkg)
+{
+  struct fsys_node_pkgs_iter *iter;
+  struct pkginfo *other_pkg;
+
+  debug(dbg_veryverbose, "dir_is_used_by_others '%s' (except %s)", file->name,
+        pkg ? pkg_name(pkg, pnaw_always) : "<none>");
+
+  iter = fsys_node_pkgs_iter_new(file);
+  while ((other_pkg = fsys_node_pkgs_iter_next(iter))) {
+    debug(dbg_veryverbose, "dir_is_used_by_others considering %s ...",
+          pkg_name(other_pkg, pnaw_always));
+    if (other_pkg == pkg)
+      continue;
+
+    fsys_node_pkgs_iter_free(iter);
+    debug(dbg_veryverbose, "dir_is_used_by_others yes");
+    return true;
+  }
+  fsys_node_pkgs_iter_free(iter);
+
+  debug(dbg_veryverbose, "dir_is_used_by_others no");
+  return false;
+}
+
+/*
+ * Returns true if the file is used by pkg, false otherwise.
+ */
+bool
+dir_is_used_by_pkg(struct fsys_namenode *file, struct pkginfo *pkg,
+                   struct fsys_namenode_list *list)
+{
+  struct fsys_namenode_list *node;
+  size_t namelen;
+
+  debug(dbg_veryverbose, "dir_is_used_by_pkg '%s' (by %s)",
+        file->name, pkg ? pkg_name(pkg, pnaw_always) : "<none>");
+
+  namelen = strlen(file->name);
+
+  for (node = list; node; node = node->next) {
+    debug(dbg_veryverbose, "dir_is_used_by_pkg considering %s ...",
+          node->namenode->name);
+
+    if (strncmp(file->name, node->namenode->name, namelen) == 0 &&
+        strlen(node->namenode->name) > namelen &&
+        node->namenode->name[namelen] == '/') {
+      debug(dbg_veryverbose, "dir_is_used_by_pkg yes");
+      return true;
+    }
+  }
+
+  debug(dbg_veryverbose, "dir_is_used_by_pkg no");
+
+  return false;
+}
+
+/**
+ * Mark a conffile as obsolete.
+ *
+ * @param pkg		The package owning the conffile.
+ * @param namenode	The namenode for the obsolete conffile.
+ */
+void
+conffile_mark_obsolete(struct pkginfo *pkg, struct fsys_namenode *namenode)
+{
+  struct conffile *conff;
+
+  for (conff = pkg->installed.conffiles; conff; conff = conff->next) {
+    if (strcmp(conff->name, namenode->name) == 0) {
+      debug(dbg_conff, "marking %s conffile %s as obsolete",
+            pkg_name(pkg, pnaw_always), conff->name);
+      conff->obsolete = true;
+      return;
+    }
+  }
+}
+
+/**
+ * Mark all package conffiles as old.
+ *
+ * @param pkg		The package owning the conffiles.
+ */
+void
+pkg_conffiles_mark_old(struct pkginfo *pkg)
+{
+  const struct conffile *conff;
+  struct fsys_namenode *namenode;
+
+  for (conff = pkg->installed.conffiles; conff; conff = conff->next) {
+    namenode = fsys_hash_find_node(conff->name, 0); /* XXX */
+    namenode->flags |= FNNF_OLD_CONFF;
+    if (!namenode->oldhash)
+      namenode->oldhash = conff->hash;
+    debug(dbg_conffdetail, "%s '%s' namenode '%s' flags %o", __func__,
+          conff->name, namenode->name, namenode->flags);
+  }
+}
+
+void
+log_action(const char *action, struct pkginfo *pkg, struct pkgbin *pkgbin)
+{
+  log_message("%s %s %s %s", action, pkgbin_name(pkg, pkgbin, pnaw_always),
+	      versiondescribe(&pkg->installed.version, vdew_nonambig),
+	      versiondescribe(&pkg->available.version, vdew_nonambig));
+  statusfd_send("processing: %s: %s", action,
+                pkgbin_name(pkg, pkgbin, pnaw_nonambig));
+}