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/* debuginfod utilities for GDB.
Copyright (C) 2020 Free Software Foundation, Inc.
This file is part of GDB.
This program 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.
This program 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 <http://www.gnu.org/licenses/>. */
#include "defs.h"
#include <errno.h>
#include "cli/cli-style.h"
#include "gdbsupport/scoped_fd.h"
#include "debuginfod-support.h"
#ifndef HAVE_LIBDEBUGINFOD
scoped_fd
debuginfod_source_query (const unsigned char *build_id,
int build_id_len,
const char *srcpath,
gdb::unique_xmalloc_ptr<char> *destname)
{
return scoped_fd (-ENOSYS);
}
scoped_fd
debuginfod_debuginfo_query (const unsigned char *build_id,
int build_id_len,
const char *filename,
gdb::unique_xmalloc_ptr<char> *destname)
{
return scoped_fd (-ENOSYS);
}
#else
#include <elfutils/debuginfod.h>
/* TODO: Use debuginfod API extensions instead of these globals. */
static std::string desc;
static std::string fname;
static bool has_printed;
static int
progressfn (debuginfod_client *c, long cur, long total)
{
if (check_quit_flag ())
{
printf_filtered ("Cancelling download of %s %ps...\n",
desc.c_str (),
styled_string (file_name_style.style (), fname.c_str ()));
return 1;
}
if (!has_printed && total != 0)
{
/* Print this message only once. */
has_printed = true;
printf_filtered ("Downloading %s %ps...\n",
desc.c_str (),
styled_string (file_name_style.style (), fname.c_str ()));
}
return 0;
}
static debuginfod_client *
debuginfod_init ()
{
debuginfod_client *c = debuginfod_begin ();
if (c != nullptr)
debuginfod_set_progressfn (c, progressfn);
return c;
}
/* See debuginfod-support.h */
scoped_fd
debuginfod_source_query (const unsigned char *build_id,
int build_id_len,
const char *srcpath,
gdb::unique_xmalloc_ptr<char> *destname)
{
if (getenv (DEBUGINFOD_URLS_ENV_VAR) == NULL)
return scoped_fd (-ENOSYS);
debuginfod_client *c = debuginfod_init ();
if (c == nullptr)
return scoped_fd (-ENOMEM);
desc = std::string ("source file");
fname = std::string (srcpath);
has_printed = false;
scoped_fd fd (debuginfod_find_source (c,
build_id,
build_id_len,
srcpath,
nullptr));
/* TODO: Add 'set debug debuginfod' command to control when error messages are shown. */
if (fd.get () < 0 && fd.get () != -ENOENT)
printf_filtered (_("Download failed: %s. Continuing without source file %ps.\n"),
safe_strerror (-fd.get ()),
styled_string (file_name_style.style (), srcpath));
else
destname->reset (xstrdup (srcpath));
debuginfod_end (c);
return fd;
}
/* See debuginfod-support.h */
scoped_fd
debuginfod_debuginfo_query (const unsigned char *build_id,
int build_id_len,
const char *filename,
gdb::unique_xmalloc_ptr<char> *destname)
{
if (getenv (DEBUGINFOD_URLS_ENV_VAR) == NULL)
return scoped_fd (-ENOSYS);
debuginfod_client *c = debuginfod_init ();
if (c == nullptr)
return scoped_fd (-ENOMEM);
desc = std::string ("separate debug info for");
fname = std::string (filename);
has_printed = false;
char *dname = nullptr;
scoped_fd fd (debuginfod_find_debuginfo (c, build_id, build_id_len, &dname));
if (fd.get () < 0 && fd.get () != -ENOENT)
printf_filtered (_("Download failed: %s. Continuing without debug info for %ps.\n"),
safe_strerror (-fd.get ()),
styled_string (file_name_style.style (), filename));
destname->reset (dname);
debuginfod_end (c);
return fd;
}
#endif
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