Adding upstream version 1.21.22.upstream/1.21.22upstream

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

1 files changed, 257 insertions, 0 deletions

diff --git a/dselect/method.cc b/dselect/method.cc
new file mode 100644
index 0000000..b8a5cfd
--- /dev/null
+++ b/dselect/method.cc
@@ -0,0 +1,257 @@
+/*
+ * dselect - Debian package maintenance user interface
+ * method.cc - access method handling
+ *
+ * Copyright © 1995 Ian Jackson <ijackson@chiark.greenend.org.uk>
+ * Copyright © 2001,2002 Wichert Akkerman <wakkerma@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 <sys/file.h>
+#include <sys/wait.h>
+
+#include <errno.h>
+#include <limits.h>
+#include <string.h>
+#include <fcntl.h>
+#include <dirent.h>
+#include <signal.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+#include <dpkg/i18n.h>
+#include <dpkg/dpkg.h>
+#include <dpkg/dpkg-db.h>
+#include <dpkg/subproc.h>
+#include <dpkg/command.h>
+
+#include "dselect.h"
+#include "method.h"
+
+static const char *const methoddirectories[]= {
+  LIBDIR "/" METHODSDIR,
+  LOCALLIBDIR "/" METHODSDIR,
+  nullptr
+};
+
+static char *methodlockfile = nullptr;
+static int methlockfd= -1;
+
+static void
+sthfailed(const char * reasoning)
+{
+  curseson();
+  clear();
+  printw("\n\n%s: %s\n", DSELECT, reasoning);
+  attrset(A_BOLD);
+  addstr(_("\nPress <enter> to continue."));
+  attrset(A_NORMAL);
+  refresh(); getch();
+}
+
+static void cu_unlockmethod(int, void**) {
+  struct flock fl;
+
+  if (methodlockfile == nullptr)
+    internerr("method lock file is nullptr");
+  if (methlockfd < 0)
+    internerr("method lock fd is %d < 0", methlockfd);
+  fl.l_type=F_UNLCK; fl.l_whence= SEEK_SET; fl.l_start=fl.l_len=0;
+  if (fcntl(methlockfd,F_SETLK,&fl) == -1)
+    sthfailed(_("cannot unlock access method area"));
+}
+
+static enum urqresult ensureoptions(void) {
+  const char *const *ccpp;
+  dselect_option *newoptions;
+  int nread;
+
+  if (!options) {
+    newoptions = nullptr;
+    nread= 0;
+    for (ccpp= methoddirectories; *ccpp; ccpp++)
+      readmethods(*ccpp, &newoptions, &nread);
+    if (!newoptions) {
+      sthfailed(_("no access methods are available"));
+      return urqr_fail;
+    }
+    options= newoptions;
+    noptions= nread;
+  }
+  return urqr_normal;
+}
+
+static enum urqresult lockmethod(void) {
+  struct flock fl;
+
+  if (methodlockfile == nullptr)
+    methodlockfile = dpkg_db_get_path(METHLOCKFILE);
+
+  if (methlockfd == -1) {
+    methlockfd= open(methodlockfile, O_RDWR|O_CREAT|O_TRUNC, 0660);
+    if (methlockfd == -1) {
+      if ((errno == EPERM) || (errno == EACCES)) {
+        sthfailed(_("requested operation requires superuser privilege"));
+        return urqr_fail;
+      }
+      sthfailed(_("cannot open or create access method lockfile"));
+      return urqr_fail;
+    }
+  }
+  fl.l_type=F_WRLCK; fl.l_whence=SEEK_SET; fl.l_start=fl.l_len=0;
+  if (fcntl(methlockfd,F_SETLK,&fl) == -1) {
+    if (errno == EACCES || errno == EAGAIN) {
+      sthfailed(_("the access method area is already locked"));
+      return urqr_fail;
+    }
+    sthfailed(_("cannot lock access method area"));
+    return urqr_fail;
+  }
+  push_cleanup(cu_unlockmethod, ~0, 0);
+  return urqr_normal;
+}
+
+static urqresult
+falliblesubprocess(struct command *cmd)
+{
+  pid_t pid;
+  int i, c;
+
+  cursesoff();
+
+  subproc_signals_ignore(cmd->name);
+
+  pid = subproc_fork();
+  if (pid == 0) {
+    subproc_signals_cleanup(0, nullptr);
+    command_exec(cmd);
+  }
+
+  fprintf(stderr, "\n");
+
+  i = subproc_reap(pid, cmd->name, SUBPROC_WARN);
+
+  subproc_signals_restore();
+
+  if (i == 0) {
+    sleep(1);
+    return urqr_normal;
+  }
+  fprintf(stderr,_("Press <enter> to continue.\n"));
+  m_output(stderr, _("<standard error>"));
+  do {
+    c = fgetc(stdin);
+  } while ((c == EOF && errno == EINTR) || (c != '\n' && c != EOF));
+  if (c == EOF)
+    ohshite(_("error reading acknowledgement of program failure message"));
+  return urqr_fail;
+}
+
+static urqresult runscript(const char *exepath, const char *name) {
+  urqresult ur;
+
+  ur= ensureoptions();  if (ur != urqr_normal) return ur;
+  ur=lockmethod();  if (ur != urqr_normal) return ur;
+  getcurrentopt();
+
+  if (coption) {
+    struct command cmd;
+
+    strcpy(coption->meth->pathinmeth,exepath);
+
+    command_init(&cmd, coption->meth->path, name);
+    command_add_args(&cmd, exepath, dpkg_db_get_dir(),
+                     coption->meth->name, coption->name, nullptr);
+    ur = falliblesubprocess(&cmd);
+    command_destroy(&cmd);
+  } else {
+    sthfailed(_("no access method is selected or configured"));
+    ur= urqr_fail;
+  }
+  pop_cleanup(ehflag_normaltidy);
+
+  return ur;
+}
+
+urqresult urq_update(void) {
+  return runscript(METHODUPDATESCRIPT,_("update available list script"));
+}
+
+urqresult urq_install(void) {
+  return runscript(METHODINSTALLSCRIPT,_("installation script"));
+}
+
+static urqresult rundpkgauto(const char *name, const char *dpkgmode) {
+  urqresult ur;
+  struct command cmd;
+
+  command_init(&cmd, DPKG, name);
+  command_add_args(&cmd, DPKG, "--admindir", dpkg_db_get_dir(), "--pending",
+                   dpkgmode, nullptr);
+
+  cursesoff();
+  printf(_("running %s %s ...\n"), "dpkg --pending", dpkgmode);
+  fflush(stdout);
+  ur = falliblesubprocess(&cmd);
+  command_destroy(&cmd);
+
+  return ur;
+}
+
+urqresult urq_remove(void) {
+  return rundpkgauto("dpkg --remove","--remove");
+}
+
+urqresult urq_config(void) {
+  return rundpkgauto("dpkg --configure","--configure");
+}
+
+urqresult urq_setup(void) {
+  quitaction qa;
+  urqresult ur;
+
+  ur= ensureoptions();  if (ur != urqr_normal) return ur;
+  ur=lockmethod();  if (ur != urqr_normal) return ur;
+  getcurrentopt();
+
+  curseson();
+  methodlist *l= new methodlist();
+  qa= l->display();
+  delete l;
+
+  if (qa == qa_quitchecksave) {
+    struct command cmd;
+
+    strcpy(coption->meth->pathinmeth,METHODSETUPSCRIPT);
+
+    command_init(&cmd, coption->meth->path, _("query/setup script"));
+    command_add_args(&cmd, METHODSETUPSCRIPT, dpkg_db_get_dir(),
+                     coption->meth->name, coption->name, nullptr);
+    ur = falliblesubprocess(&cmd);
+    command_destroy(&cmd);
+    if (ur == urqr_normal) writecurrentopt();
+  } else {
+    ur= urqr_fail;
+  }
+
+  pop_cleanup(ehflag_normaltidy);
+  return ur;
+}