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/* debuginfod utilities for GDB.
Copyright (C) 2020-2021 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"
#include "gdbsupport/gdb_optional.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>
struct user_data
{
user_data (const char *desc, const char *fname)
: desc (desc), fname (fname)
{ }
const char * const desc;
const char * const fname;
gdb::optional<ui_out::progress_meter> meter;
};
/* Deleter for a debuginfod_client. */
struct debuginfod_client_deleter
{
void operator() (debuginfod_client *c)
{
debuginfod_end (c);
}
};
using debuginfod_client_up
= std::unique_ptr<debuginfod_client, debuginfod_client_deleter>;
static int
progressfn (debuginfod_client *c, long cur, long total)
{
user_data *data = static_cast<user_data *> (debuginfod_get_user_data (c));
if (check_quit_flag ())
{
printf_filtered ("Cancelling download of %s %ps...\n",
data->desc,
styled_string (file_name_style.style (), data->fname));
return 1;
}
if (total == 0)
return 0;
if (!data->meter.has_value ())
{
float size_in_mb = 1.0f * total / (1024 * 1024);
string_file styled_filename (current_uiout->can_emit_style_escape ());
fprintf_styled (&styled_filename,
file_name_style.style (),
"%s",
data->fname);
std::string message
= string_printf ("Downloading %.2f MB %s %s", size_in_mb, data->desc,
styled_filename.c_str());
data->meter.emplace (current_uiout, message, 1);
}
current_uiout->progress ((double)cur / (double)total);
return 0;
}
static debuginfod_client_up
debuginfod_init ()
{
debuginfod_client_up c (debuginfod_begin ());
if (c != nullptr)
debuginfod_set_progressfn (c.get (), 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)
{
const char *urls_env_var = getenv (DEBUGINFOD_URLS_ENV_VAR);
if (urls_env_var == NULL || urls_env_var[0] == '\0')
return scoped_fd (-ENOSYS);
debuginfod_client_up c = debuginfod_init ();
if (c == nullptr)
return scoped_fd (-ENOMEM);
user_data data ("source file", srcpath);
debuginfod_set_user_data (c.get (), &data);
scoped_fd fd (debuginfod_find_source (c.get (),
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));
if (fd.get () >= 0)
*destname = make_unique_xstrdup (srcpath);
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)
{
const char *urls_env_var = getenv (DEBUGINFOD_URLS_ENV_VAR);
if (urls_env_var == NULL || urls_env_var[0] == '\0')
return scoped_fd (-ENOSYS);
debuginfod_client_up c = debuginfod_init ();
if (c == nullptr)
return scoped_fd (-ENOMEM);
char *dname = nullptr;
user_data data ("separate debug info for", filename);
debuginfod_set_user_data (c.get (), &data);
scoped_fd fd (debuginfod_find_debuginfo (c.get (), 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));
if (fd.get () >= 0)
destname->reset (dname);
return fd;
}
#endif
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