1
0
mirror of git://git.gnupg.org/gnupg.git synced 2024-12-24 10:39:57 +01:00
gnupg/keyserver/ksutil.c
David Shaw a90637513c * ksutil.h, ksutil.c (init_ks_options, free_ks_options,
parse_ks_options): Pull a lot of duplicated code into a single options
parser for all keyserver helpers.
2005-03-16 15:17:03 +00:00

270 lines
5.5 KiB
C

/* ksutil.c - general keyserver utility functions
* Copyright (C) 2004, 2005 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
*/
#include <config.h>
#include <signal.h>
#include <unistd.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include "keyserver.h"
#include "ksutil.h"
static void
catch_alarm(int foo)
{
_exit(KEYSERVER_TIMEOUT);
}
unsigned int
set_timeout(unsigned int seconds)
{
#ifdef HAVE_DOSISH_SYSTEM
return 0;
#else
return alarm(seconds);
#endif
}
int
register_timeout(void)
{
#ifdef HAVE_DOSISH_SYSTEM
return 0;
#else
#if defined(HAVE_SIGACTION) && defined(HAVE_STRUCT_SIGACTION)
struct sigaction act;
act.sa_handler=catch_alarm;
sigemptyset(&act.sa_mask);
act.sa_flags=0;
return sigaction(SIGALRM,&act,NULL);
#else
if(signal(SIGALRM,catch_alarm)==SIG_ERR)
return -1;
else
return 0;
#endif
#endif
}
struct ks_options *
init_ks_options(void)
{
struct ks_options *opt;
opt=calloc(1,sizeof(struct ks_options));
if(opt)
{
opt->action=KS_UNKNOWN;
opt->flags.check_cert=1;
opt->timeout=DEFAULT_KEYSERVER_TIMEOUT;
}
return opt;
}
void
free_ks_options(struct ks_options *opt)
{
free(opt->host);
free(opt->port);
free(opt->scheme);
free(opt->auth);
free(opt->path);
free(opt->ca_cert_file);
free(opt);
}
/* Returns 0 if we "ate" the line. Returns >0, a KEYSERVER_ error
code if that error applies. Returns -1 if we did not match the
line at all. */
int
parse_ks_options(char *line,struct ks_options *opt)
{
int version;
char command[MAX_COMMAND+1];
char host[MAX_HOST+1];
char port[MAX_PORT+1];
char scheme[MAX_SCHEME+1];
char auth[MAX_AUTH+1];
char path[URLMAX_PATH+1];
char option[MAX_OPTION+1];
#if 0
if(sscanf(line,"%c",&hash)==1 && hash=='#')
continue;
#endif
if(line[0]=='#')
return 0;
if(sscanf(line,"COMMAND %" MKSTRING(MAX_COMMAND) "s\n",command)==1)
{
command[MAX_COMMAND]='\0';
if(strcasecmp(command,"get")==0)
opt->action=KS_GET;
else if(strcasecmp(command,"send")==0)
opt->action=KS_SEND;
else if(strcasecmp(command,"search")==0)
opt->action=KS_SEARCH;
return 0;
}
if(sscanf(line,"HOST %" MKSTRING(MAX_HOST) "s\n",host)==1)
{
host[MAX_HOST]='\0';
opt->host=strdup(host);
if(!opt->host)
return KEYSERVER_NO_MEMORY;
return 0;
}
if(sscanf(line,"PORT %" MKSTRING(MAX_PORT) "s\n",port)==1)
{
port[MAX_PORT]='\0';
opt->port=strdup(port);
if(!opt->port)
return KEYSERVER_NO_MEMORY;
return 0;
}
if(sscanf(line,"SCHEME %" MKSTRING(MAX_SCHEME) "s\n",scheme)==1)
{
scheme[MAX_SCHEME]='\0';
opt->scheme=strdup(scheme);
if(!opt->scheme)
return KEYSERVER_NO_MEMORY;
return 0;
}
if(sscanf(line,"AUTH %" MKSTRING(MAX_AUTH) "s\n",auth)==1)
{
auth[MAX_AUTH]='\0';
opt->auth=strdup(auth);
if(!opt->auth)
return KEYSERVER_NO_MEMORY;
return 0;
}
if(sscanf(line,"PATH %" MKSTRING(URLMAX_PATH) "s\n",path)==1)
{
path[URLMAX_PATH]='\0';
opt->path=strdup(path);
if(!opt->path)
return KEYSERVER_NO_MEMORY;
return 0;
}
if(sscanf(line,"VERSION %d\n",&version)==1)
{
if(version!=KEYSERVER_PROTO_VERSION)
return KEYSERVER_VERSION_ERROR;
return 0;
}
if(sscanf(line,"OPTION %" MKSTRING(MAX_OPTION) "[^\n]\n",option)==1)
{
int no=0;
char *start=&option[0];
option[MAX_OPTION]='\0';
if(strncasecmp(option,"no-",3)==0)
{
no=1;
start=&option[3];
}
if(strcasecmp(start,"verbose")==0)
{
if(no)
opt->verbose--;
else
opt->verbose++;
}
else if(strcasecmp(start,"include-disabled")==0)
{
if(no)
opt->flags.include_disabled=0;
else
opt->flags.include_disabled=1;
}
else if(strcasecmp(start,"include-revoked")==0)
{
if(no)
opt->flags.include_revoked=0;
else
opt->flags.include_revoked=1;
}
else if(strcasecmp(start,"include-subkeys")==0)
{
if(no)
opt->flags.include_subkeys=0;
else
opt->flags.include_subkeys=1;
}
else if(strcasecmp(start,"check-cert")==0)
{
if(no)
opt->flags.check_cert=0;
else
opt->flags.check_cert=1;
}
else if(strncasecmp(start,"debug",5)==0)
{
if(no)
opt->debug=0;
else if(start[5]=='=')
opt->debug=atoi(&start[6]);
}
else if(strncasecmp(start,"timeout",7)==0)
{
if(no)
opt->timeout=0;
else if(start[7]=='=')
opt->timeout=atoi(&start[8]);
else if(start[7]=='\0')
opt->timeout=DEFAULT_KEYSERVER_TIMEOUT;
}
else if(strncasecmp(start,"ca-cert-file",12)==0)
{
if(no)
{
free(opt->ca_cert_file);
opt->ca_cert_file=NULL;
}
else if(start[12]=='=')
{
free(opt->ca_cert_file);
opt->ca_cert_file=strdup(&start[13]);
if(!opt->ca_cert_file)
return KEYSERVER_NO_MEMORY;
}
}
}
return -1;
}