Adding upstream version 5.1.upstream/5.1upstream

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

1 files changed, 511 insertions, 0 deletions

diff --git a/error.c b/error.c
new file mode 100644
index 0000000..7df4b14
--- /dev/null
+++ b/error.c
@@ -0,0 +1,511 @@
+/* error.c -- Functions for handling errors. */
+
+/* Copyright (C) 1993-2020 Free Software Foundation, Inc.
+
+   This file is part of GNU Bash, the Bourne Again SHell.
+
+   Bash 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 3 of the License, or
+   (at your option) any later version.
+
+   Bash 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 Bash.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "config.h"
+
+#include "bashtypes.h"
+#include <fcntl.h>
+
+#if defined (HAVE_UNISTD_H)
+#  include <unistd.h>
+#endif
+
+#if defined (PREFER_STDARG)
+#  include <stdarg.h>
+#else
+#  include <varargs.h>
+#endif
+
+#include <stdio.h>
+
+#include <errno.h>
+#if !defined (errno)
+extern int errno;
+#endif /* !errno */
+
+#include "bashansi.h"
+#include "bashintl.h"
+
+#include "shell.h"
+#include "execute_cmd.h"
+#include "flags.h"
+#include "input.h"
+
+#if defined (HISTORY)
+#  include "bashhist.h"
+#endif
+
+extern int executing_line_number PARAMS((void));
+
+#if defined (JOB_CONTROL)
+extern pid_t shell_pgrp;
+extern int give_terminal_to PARAMS((pid_t, int));
+#endif /* JOB_CONTROL */
+
+#if defined (ARRAY_VARS)
+extern const char * const bash_badsub_errmsg;
+#endif
+
+static void error_prolog PARAMS((int));
+
+/* The current maintainer of the shell.  You change this in the
+   Makefile. */
+#if !defined (MAINTAINER)
+#define MAINTAINER "bash-maintainers@gnu.org"
+#endif
+
+const char * const the_current_maintainer = MAINTAINER;
+
+int gnu_error_format = 0;
+
+static void
+error_prolog (print_lineno)
+     int print_lineno;
+{
+  char *ename;
+  int line;
+
+  ename = get_name_for_error ();
+  line = (print_lineno && interactive_shell == 0) ? executing_line_number () : -1;
+
+  if (line > 0)
+    fprintf (stderr, "%s:%s%d: ", ename, gnu_error_format ? "" : _(" line "), line);
+  else
+    fprintf (stderr, "%s: ", ename);
+}
+
+/* Return the name of the shell or the shell script for error reporting. */
+char *
+get_name_for_error ()
+{
+  char *name;
+#if defined (ARRAY_VARS)
+  SHELL_VAR *bash_source_v;
+  ARRAY *bash_source_a;
+#endif
+
+  name = (char *)NULL;
+  if (interactive_shell == 0)
+    {
+#if defined (ARRAY_VARS)
+      bash_source_v = find_variable ("BASH_SOURCE");
+      if (bash_source_v && array_p (bash_source_v) &&
+	  (bash_source_a = array_cell (bash_source_v)))
+	name = array_reference (bash_source_a, 0);
+      if (name == 0 || *name == '\0')	/* XXX - was just name == 0 */
+#endif
+	name = dollar_vars[0];
+    }
+  if (name == 0 && shell_name && *shell_name)
+    name = base_pathname (shell_name);
+  if (name == 0)
+#if defined (PROGRAM)
+    name = PROGRAM;
+#else
+    name = "bash";
+#endif
+
+  return (name);
+}
+
+/* Report an error having to do with FILENAME.  This does not use
+   sys_error so the filename is not interpreted as a printf-style
+   format string. */
+void
+file_error (filename)
+     const char *filename;
+{
+  report_error ("%s: %s", filename, strerror (errno));
+}
+
+void
+#if defined (PREFER_STDARG)
+programming_error (const char *format, ...)
+#else
+programming_error (format, va_alist)
+     const char *format;
+     va_dcl
+#endif
+{
+  va_list args;
+  char *h;
+
+#if defined (JOB_CONTROL)
+  give_terminal_to (shell_pgrp, 0);
+#endif /* JOB_CONTROL */
+
+  SH_VA_START (args, format);
+
+  vfprintf (stderr, format, args);
+  fprintf (stderr, "\n");
+  va_end (args);
+
+#if defined (HISTORY)
+  if (remember_on_history)
+    {
+      h = last_history_line ();
+      fprintf (stderr, _("last command: %s\n"), h ? h : "(null)");
+    }
+#endif
+
+#if 0
+  fprintf (stderr, "Report this to %s\n", the_current_maintainer);
+#endif
+
+  fprintf (stderr, _("Aborting..."));
+  fflush (stderr);
+
+  abort ();
+}
+
+/* Print an error message and, if `set -e' has been executed, exit the
+   shell.  Used in this file by file_error and programming_error.  Used
+   outside this file mostly to report substitution and expansion errors,
+   and for bad invocation options. */
+void
+#if defined (PREFER_STDARG)
+report_error (const char *format, ...)
+#else
+report_error (format, va_alist)
+     const char *format;
+     va_dcl
+#endif
+{
+  va_list args;
+
+  error_prolog (1);
+
+  SH_VA_START (args, format);
+
+  vfprintf (stderr, format, args);
+  fprintf (stderr, "\n");
+
+  va_end (args);
+  if (exit_immediately_on_error)
+    {
+      if (last_command_exit_value == 0)
+	last_command_exit_value = EXECUTION_FAILURE;
+      exit_shell (last_command_exit_value);
+    }
+}
+
+void
+#if defined (PREFER_STDARG)
+fatal_error (const char *format, ...)
+#else
+fatal_error (format, va_alist)
+     const char *format;
+     va_dcl
+#endif
+{
+  va_list args;
+
+  error_prolog (0);
+
+  SH_VA_START (args, format);
+
+  vfprintf (stderr, format, args);
+  fprintf (stderr, "\n");
+
+  va_end (args);
+  sh_exit (2);
+}
+
+void
+#if defined (PREFER_STDARG)
+internal_error (const char *format, ...)
+#else
+internal_error (format, va_alist)
+     const char *format;
+     va_dcl
+#endif
+{
+  va_list args;
+
+  error_prolog (1);
+
+  SH_VA_START (args, format);
+
+  vfprintf (stderr, format, args);
+  fprintf (stderr, "\n");
+
+  va_end (args);
+}
+
+void
+#if defined (PREFER_STDARG)
+internal_warning (const char *format, ...)
+#else
+internal_warning (format, va_alist)
+     const char *format;
+     va_dcl
+#endif
+{
+  va_list args;
+
+  error_prolog (1);
+  fprintf (stderr, _("warning: "));
+
+  SH_VA_START (args, format);
+
+  vfprintf (stderr, format, args);
+  fprintf (stderr, "\n");
+
+  va_end (args);
+}
+
+void
+#if defined (PREFER_STDARG)
+internal_inform (const char *format, ...)
+#else
+internal_inform (format, va_alist)
+     const char *format;
+     va_dcl
+#endif
+{
+  va_list args;
+
+  error_prolog (1);
+  /* TRANSLATORS: this is a prefix for informational messages. */
+  fprintf (stderr, _("INFORM: "));
+
+  SH_VA_START (args, format);
+
+  vfprintf (stderr, format, args);
+  fprintf (stderr, "\n");
+
+  va_end (args);
+}
+
+void
+#if defined (PREFER_STDARG)
+sys_error (const char *format, ...)
+#else
+sys_error (format, va_alist)
+     const char *format;
+     va_dcl
+#endif
+{
+  int e;
+  va_list args;
+
+  e = errno;
+  error_prolog (0);
+
+  SH_VA_START (args, format);
+
+  vfprintf (stderr, format, args);
+  fprintf (stderr, ": %s\n", strerror (e));
+
+  va_end (args);
+}
+
+/* An error from the parser takes the general form
+
+	shell_name: input file name: line number: message
+
+   The input file name and line number are omitted if the shell is
+   currently interactive.  If the shell is not currently interactive,
+   the input file name is inserted only if it is different from the
+   shell name. */
+void
+#if defined (PREFER_STDARG)
+parser_error (int lineno, const char *format, ...)
+#else
+parser_error (lineno, format, va_alist)
+     int lineno;
+     const char *format;
+     va_dcl
+#endif
+{
+  va_list args;
+  char *ename, *iname;
+
+  ename = get_name_for_error ();
+  iname = yy_input_name ();
+
+  if (interactive)
+    fprintf (stderr, "%s: ", ename);
+  else if (interactive_shell)
+    fprintf (stderr, "%s: %s:%s%d: ", ename, iname, gnu_error_format ? "" : _(" line "), lineno);
+  else if (STREQ (ename, iname))
+    fprintf (stderr, "%s:%s%d: ", ename, gnu_error_format ? "" : _(" line "), lineno);
+  else
+    fprintf (stderr, "%s: %s:%s%d: ", ename, iname, gnu_error_format ? "" : _(" line "), lineno);
+
+  SH_VA_START (args, format);
+
+  vfprintf (stderr, format, args);
+  fprintf (stderr, "\n");
+
+  va_end (args);
+
+  if (exit_immediately_on_error)
+    exit_shell (last_command_exit_value = 2);
+}
+
+#ifdef DEBUG
+/* This assumes ASCII and is suitable only for debugging */
+char *
+strescape (str)
+     const char *str;
+{
+  char *r, *result;
+  unsigned char *s;
+
+  r = result = (char *)xmalloc (strlen (str) * 2 + 1);
+
+  for (s = (unsigned char *)str; s && *s; s++)
+    {
+      if (*s < ' ')
+	{
+	  *r++ = '^';
+	  *r++ = *s+64;
+	}
+      else if (*s == 127)
+	{
+	  *r++ = '^';
+	  *r++ = '?';
+	}
+     else
+	*r++ = *s;
+    }
+
+  *r = '\0';
+  return result;
+}
+
+void
+#if defined (PREFER_STDARG)
+itrace (const char *format, ...)
+#else
+itrace (format, va_alist)
+     const char *format;
+     va_dcl
+#endif
+{
+  va_list args;
+
+  fprintf(stderr, "TRACE: pid %ld: ", (long)getpid());
+
+  SH_VA_START (args, format);
+
+  vfprintf (stderr, format, args);
+  fprintf (stderr, "\n");
+
+  va_end (args);
+
+  fflush(stderr);
+}
+
+/* A trace function for silent debugging -- doesn't require a control
+   terminal. */
+void
+#if defined (PREFER_STDARG)
+trace (const char *format, ...)
+#else
+trace (format, va_alist)
+     const char *format;
+     va_dcl
+#endif
+{
+  va_list args;
+  static FILE *tracefp = (FILE *)NULL;
+
+  if (tracefp == NULL)
+    tracefp = fopen("/tmp/bash-trace.log", "a+");
+
+  if (tracefp == NULL)
+    tracefp = stderr;
+  else
+    fcntl (fileno (tracefp), F_SETFD, 1);     /* close-on-exec */
+
+  fprintf(tracefp, "TRACE: pid %ld: ", (long)getpid());
+
+  SH_VA_START (args, format);
+
+  vfprintf (tracefp, format, args);
+  fprintf (tracefp, "\n");
+
+  va_end (args);
+
+  fflush(tracefp);
+}
+
+#endif /* DEBUG */
+
+/* **************************************************************** */
+/*								    */
+/*  		    Common error reporting			    */
+/*								    */
+/* **************************************************************** */
+
+
+static const char * const cmd_error_table[] = {
+	N_("unknown command error"),	/* CMDERR_DEFAULT */
+	N_("bad command type"),		/* CMDERR_BADTYPE */
+	N_("bad connector"),		/* CMDERR_BADCONN */
+	N_("bad jump"),			/* CMDERR_BADJUMP */
+	0
+};
+
+void
+command_error (func, code, e, flags)
+     const char *func;
+     int code, e, flags;	/* flags currently unused */
+{
+  if (code > CMDERR_LAST)
+    code = CMDERR_DEFAULT;
+
+  programming_error ("%s: %s: %d", func, _(cmd_error_table[code]), e);
+}
+
+char *
+command_errstr (code)
+     int code;
+{
+  if (code > CMDERR_LAST)
+    code = CMDERR_DEFAULT;
+
+  return (_(cmd_error_table[code]));
+}
+
+#ifdef ARRAY_VARS
+void
+err_badarraysub (s)
+     const char *s;
+{
+  report_error ("%s: %s", s, _(bash_badsub_errmsg));
+}
+#endif
+
+void
+err_unboundvar (s)
+     const char *s;
+{
+  report_error (_("%s: unbound variable"), s);
+}
+
+void
+err_readonly (s)
+     const char *s;
+{
+  report_error (_("%s: readonly variable"), s);
+}