mirror of
git://git.gnupg.org/gnupg.git
synced 2024-10-31 20:08:43 +01:00
310 lines
7.4 KiB
C
310 lines
7.4 KiB
C
/* gpd.c - The GnuPG daemon (keyserver)
|
|
* Copyright (C) 1998, 1999 Free Software Foundation, Inc.
|
|
*
|
|
* This file is part of GnuPG.
|
|
*
|
|
* GnuPG 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.
|
|
*
|
|
* GnuPG 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, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
|
|
*/
|
|
|
|
/****************
|
|
* This is a spinning server for most purposes, the server does only
|
|
* fork for updates (which may require signature checks and lengthy DB
|
|
* operations).
|
|
*
|
|
* see ks-proto.c for the used protocol.
|
|
* see ks-db.c for the layout of the database.
|
|
*/
|
|
|
|
#include <config.h>
|
|
#include <stdio.h>
|
|
#include <errno.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
#include <signal.h>
|
|
#include <sys/types.h>
|
|
#include <sys/stat.h>
|
|
|
|
#include "util.h"
|
|
#include "cipher.h"
|
|
#include "options.h"
|
|
#include "main.h"
|
|
|
|
|
|
static ARGPARSE_OPTS opts[] = {
|
|
{ 'v', "verbose", 0, "verbose" },
|
|
{ 501, "options" ,2, "read options from file"},
|
|
{ 502, "no-daemon", 0, "do not operate as a daemon" },
|
|
{ 510, "debug" ,4|16, "set debugging flags"},
|
|
{ 511, "debug-all" ,0, "enable full debugging"},
|
|
{0} };
|
|
|
|
|
|
|
|
static char *build_list( const char *text,
|
|
const char * (*mapf)(int), int (*chkf)(int) );
|
|
static void become_daemon(void);
|
|
|
|
const char *
|
|
strusage( int level )
|
|
{
|
|
static char *digests, *pubkeys, *ciphers;
|
|
const char *p;
|
|
switch( level ) {
|
|
case 11: p = "gpgd (GNUPG)"; break;
|
|
case 13: p = VERSION; break;
|
|
case 17: p = PRINTABLE_OS_NAME; break;
|
|
case 19: p =
|
|
"Please report bugs to <gnupg-bugs@gnu.org>.\n";
|
|
break;
|
|
case 1:
|
|
case 40: p = "Usage: gpgd [options] (-h for help)";
|
|
break;
|
|
case 41: p = "Syntax: gpgd [options] [files]\n"
|
|
"GNUPG keyserver\n";
|
|
break;
|
|
case 31: p = "\n"; break;
|
|
case 32:
|
|
if( !ciphers )
|
|
ciphers = build_list("Supported ciphers: ", cipher_algo_to_string,
|
|
check_cipher_algo );
|
|
p = ciphers;
|
|
break;
|
|
case 33:
|
|
if( !pubkeys )
|
|
pubkeys = build_list("Supported pubkeys: ", pubkey_algo_to_string,
|
|
check_pubkey_algo );
|
|
p = pubkeys;
|
|
break;
|
|
case 34:
|
|
if( !digests )
|
|
digests = build_list("Supported digests: ", digest_algo_to_string,
|
|
check_digest_algo );
|
|
p = digests;
|
|
break;
|
|
|
|
default: p = default_strusage(level);
|
|
}
|
|
return p;
|
|
}
|
|
|
|
|
|
static char *
|
|
build_list( const char *text, const char * (*mapf)(int), int (*chkf)(int) )
|
|
{
|
|
int i;
|
|
const char *s;
|
|
size_t n=strlen(text)+2;
|
|
char *list, *p;
|
|
|
|
for(i=1; i < 100; i++ )
|
|
if( !chkf(i) && (s=mapf(i)) )
|
|
n += strlen(s) + 2;
|
|
list = m_alloc( 21 + n ); *list = 0;
|
|
for(p=NULL, i=1; i < 100; i++ ) {
|
|
if( !chkf(i) && (s=mapf(i)) ) {
|
|
if( !p )
|
|
p = stpcpy( list, text );
|
|
else
|
|
p = stpcpy( p, ", ");
|
|
p = stpcpy(p, s );
|
|
}
|
|
}
|
|
if( p )
|
|
p = stpcpy(p, "\n" );
|
|
return list;
|
|
}
|
|
|
|
|
|
static void
|
|
set_debug(void)
|
|
{
|
|
if( opt.debug & DBG_MEMORY_VALUE )
|
|
memory_debug_mode = 1;
|
|
if( opt.debug & DBG_MEMSTAT_VALUE )
|
|
memory_stat_debug_mode = 1;
|
|
if( opt.debug & DBG_MPI_VALUE )
|
|
mpi_debug_mode = 1;
|
|
if( opt.debug & DBG_CIPHER_VALUE )
|
|
g10c_debug_mode = 1;
|
|
if( opt.debug & DBG_IOBUF_VALUE )
|
|
iobuf_debug_mode = 1;
|
|
}
|
|
|
|
|
|
int
|
|
main( int argc, char **argv )
|
|
{
|
|
ARGPARSE_ARGS pargs;
|
|
int orig_argc;
|
|
char **orig_argv;
|
|
FILE *configfp = NULL;
|
|
char *configname = NULL;
|
|
unsigned configlineno;
|
|
int parse_debug = 0;
|
|
int default_config =1;
|
|
int daemon = 1;
|
|
|
|
secmem_init( 0 ); /* disable use of secmem */
|
|
log_set_name("gpgd");
|
|
log_set_pid( getpid() );
|
|
opt.compress = -1; /* defaults to standard compress level */
|
|
opt.batch = 1;
|
|
|
|
/* check whether we have a config file on the commandline */
|
|
orig_argc = argc;
|
|
orig_argv = argv;
|
|
pargs.argc = &argc;
|
|
pargs.argv = &argv;
|
|
pargs.flags= 1; /* do not remove the args */
|
|
while( arg_parse( &pargs, opts) ) {
|
|
if( pargs.r_opt == 510 || pargs.r_opt == 511 )
|
|
parse_debug++;
|
|
else if( pargs.r_opt == 501 ) {
|
|
/* yes there is one, so we do not try the default one, but
|
|
* read the option file when it is encountered at the commandline
|
|
*/
|
|
default_config = 0;
|
|
}
|
|
}
|
|
|
|
if( default_config )
|
|
configname = make_filename("/etc/gpgd.conf", NULL );
|
|
|
|
argc = orig_argc;
|
|
argv = orig_argv;
|
|
pargs.argc = &argc;
|
|
pargs.argv = &argv;
|
|
pargs.flags= 1; /* do not remove the args */
|
|
next_pass:
|
|
if( configname ) {
|
|
configlineno = 0;
|
|
configfp = fopen( configname, "r" );
|
|
if( !configfp ) {
|
|
if( default_config ) {
|
|
if( parse_debug )
|
|
log_info("note: no default option file `%s'\n",
|
|
configname );
|
|
}
|
|
else {
|
|
log_error("option file `%s': %s\n",
|
|
configname, strerror(errno) );
|
|
g10_exit(1);
|
|
}
|
|
m_free(configname); configname = NULL;
|
|
}
|
|
if( parse_debug && configname )
|
|
log_info("reading options from `%s'\n", configname );
|
|
default_config = 0;
|
|
}
|
|
|
|
while( optfile_parse( configfp, configname, &configlineno,
|
|
&pargs, opts) ) {
|
|
switch( pargs.r_opt ) {
|
|
case 'v': opt.verbose++; break;
|
|
case 501:
|
|
if( !configfp ) {
|
|
m_free(configname);
|
|
configname = m_strdup(pargs.r.ret_str);
|
|
goto next_pass;
|
|
}
|
|
break;
|
|
case 502: daemon = 0; break;
|
|
case 510: opt.debug |= pargs.r.ret_ulong; break;
|
|
case 511: opt.debug = ~0; break;
|
|
default : pargs.err = configfp? 1:2; break;
|
|
}
|
|
}
|
|
if( configfp ) {
|
|
fclose( configfp );
|
|
configfp = NULL;
|
|
m_free(configname); configname = NULL;
|
|
goto next_pass;
|
|
}
|
|
m_free( configname ); configname = NULL;
|
|
if( log_get_errorcount(0) )
|
|
g10_exit(2);
|
|
|
|
fprintf(stderr, "%s %s; %s\n", strusage(11), strusage(13), strusage(14) );
|
|
fprintf(stderr, "%s\n", strusage(15) );
|
|
|
|
set_debug();
|
|
if( daemon )
|
|
become_daemon();
|
|
|
|
|
|
g10_exit(0);
|
|
return 8; /*NEVER REACHED*/
|
|
}
|
|
|
|
|
|
void
|
|
g10_exit( int rc )
|
|
{
|
|
secmem_term();
|
|
rc = rc? rc : log_get_errorcount(0)? 2:0;
|
|
exit(rc );
|
|
}
|
|
|
|
|
|
static void
|
|
become_daemon()
|
|
{
|
|
long nfile;
|
|
int i, n;
|
|
int childpid;
|
|
|
|
if( opt.verbose )
|
|
log_info("becoming a daemon ...\n");
|
|
fflush(NULL);
|
|
|
|
/* FIXME: handle the TTY signals */
|
|
|
|
if( (childpid = fork()) == -1 )
|
|
log_fatal("can't fork first child: %s\n", strerror(errno));
|
|
else if( childpid > 0 )
|
|
exit(0); /* terminate parent */
|
|
|
|
/* Disassociate from controlling terminal etc. */
|
|
if( setsid() == -1 )
|
|
log_fatal("setsid() failed: %s\n", strerror(errno) );
|
|
|
|
log_set_pid( getpid() );
|
|
/* close all files but not the log files */
|
|
if( (nfile=sysconf( _SC_OPEN_MAX )) < 0 )
|
|
#ifdef _POSIX_OPEN_MAX
|
|
nfile = _POSIX_OPEN_MAX;
|
|
#else
|
|
nfile = 20; /* assume a common value */
|
|
#endif
|
|
n = fileno( stderr );
|
|
for(i=0; i < nfile; i++ )
|
|
if( i != n )
|
|
close(i);
|
|
errno = 0;
|
|
|
|
if( chdir("/") )
|
|
log_fatal("chdir to root failed: %s\n", strerror(errno) );
|
|
umask(0);
|
|
|
|
/* do not let possible children become zombies */
|
|
signal(SIGCHLD, SIG_IGN);
|
|
if( opt.verbose )
|
|
log_info("now running as daemon\n");
|
|
}
|
|
|
|
|
|
|