mirror of
git://git.gnupg.org/gnupg.git
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3ddd4410ae
header lines, and include "sig:" records for the benefit of people who store their keys in LDAP servers. It makes it easy to do queries for things like "all keys signed by Isabella".
1435 lines
32 KiB
C
1435 lines
32 KiB
C
/* keyserver.c - generic keyserver code
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* Copyright (C) 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
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*
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* This file is part of GnuPG.
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*
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* GnuPG is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* GnuPG is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
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*/
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#include <config.h>
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#include <ctype.h>
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <assert.h>
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#include "filter.h"
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#include "keydb.h"
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#include "status.h"
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#include "exec.h"
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#include "main.h"
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#include "i18n.h"
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#include "iobuf.h"
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#include "memory.h"
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#include "ttyio.h"
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#include "options.h"
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#include "packet.h"
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#include "keyserver-internal.h"
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#include "util.h"
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#define GET 0
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#define SEND 1
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#define SEARCH 2
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struct keyrec
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{
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KEYDB_SEARCH_DESC desc;
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time_t createtime,expiretime;
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int size,flags;
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byte type;
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IOBUF uidbuf;
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int lines;
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};
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struct kopts
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{
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char *name;
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int tell; /* tell remote process about this one */
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int *flag;
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} keyserver_opts[]=
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{
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{"include-revoked",1,&opt.keyserver_options.include_revoked},
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{"include-disabled",1,&opt.keyserver_options.include_disabled},
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{"include-subkeys",1,&opt.keyserver_options.include_subkeys},
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{"keep-temp-files",0,&opt.keyserver_options.keep_temp_files},
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{"refresh-add-fake-v3-keyids",0,&opt.keyserver_options.fake_v3_keyids},
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{"auto-key-retrieve",0,&opt.keyserver_options.auto_key_retrieve},
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{"try-dns-srv",1,&opt.keyserver_options.try_dns_srv},
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{NULL}
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};
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static int keyserver_work(int action,STRLIST list,
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KEYDB_SEARCH_DESC *desc,int count);
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void
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parse_keyserver_options(char *options)
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{
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char *tok,*arg;
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while((tok=argsep(&options,&arg)))
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{
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int i,hit=0;
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if(tok[0]=='\0')
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continue;
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for(i=0;keyserver_opts[i].name;i++)
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{
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if(ascii_strcasecmp(tok,keyserver_opts[i].name)==0)
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{
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*(keyserver_opts[i].flag)=1;
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hit=1;
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break;
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}
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else if(ascii_strncasecmp("no-",tok,3)==0 &&
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ascii_strcasecmp(&tok[3],keyserver_opts[i].name)==0)
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{
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*(keyserver_opts[i].flag)=0;
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hit=1;
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break;
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}
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}
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/* These options need more than just a flag */
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if(!hit)
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{
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if(ascii_strcasecmp(tok,"verbose")==0)
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opt.keyserver_options.verbose++;
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else if(ascii_strcasecmp(tok,"no-verbose")==0)
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opt.keyserver_options.verbose--;
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#ifdef EXEC_TEMPFILE_ONLY
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else if(ascii_strcasecmp(tok,"use-temp-files")==0 ||
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ascii_strcasecmp(tok,"no-use-temp-files")==0)
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log_info(_("WARNING: keyserver option \"%s\" is not used "
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"on this platform\n"),tok);
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#else
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else if(ascii_strcasecmp(tok,"use-temp-files")==0)
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opt.keyserver_options.use_temp_files=1;
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else if(ascii_strcasecmp(tok,"no-use-temp-files")==0)
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opt.keyserver_options.use_temp_files=0;
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#endif
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else
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if(!parse_import_options(tok,
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&opt.keyserver_options.import_options,0)
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&&
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!parse_export_options(tok,
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&opt.keyserver_options.export_options,0))
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{
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if(arg)
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{
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char *joined;
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joined=m_alloc(strlen(tok)+1+strlen(arg)+1);
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/* Make a canonical name=value form with no
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spaces */
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strcpy(joined,tok);
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strcat(joined,"=");
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strcat(joined,arg);
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add_to_strlist(&opt.keyserver_options.other,joined);
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m_free(joined);
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}
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else
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add_to_strlist(&opt.keyserver_options.other,tok);
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}
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}
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}
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}
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int
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parse_keyserver_uri(char *uri,const char *configname,unsigned int configlineno)
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{
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int assume_hkp=0;
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assert(uri!=NULL);
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opt.keyserver_host=NULL;
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opt.keyserver_port=NULL;
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opt.keyserver_opaque=NULL;
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/* Get the scheme */
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opt.keyserver_scheme=strsep(&uri,":");
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if(uri==NULL)
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{
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/* Assume HKP if there is no scheme */
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assume_hkp=1;
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uri=opt.keyserver_scheme;
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opt.keyserver_scheme="hkp";
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}
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else
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{
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/* Force to lowercase */
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char *i;
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for(i=opt.keyserver_scheme;*i!='\0';i++)
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*i=ascii_tolower(*i);
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}
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if(ascii_strcasecmp(opt.keyserver_scheme,"x-broken-hkp")==0)
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{
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deprecated_warning(configname,configlineno,"x-broken-hkp",
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"--keyserver-options ","broken-http-proxy");
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opt.keyserver_scheme="hkp";
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add_to_strlist(&opt.keyserver_options.other,"broken-http-proxy");
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}
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else if(ascii_strcasecmp(opt.keyserver_scheme,"x-hkp")==0
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|| ascii_strcasecmp(opt.keyserver_scheme,"http")==0)
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{
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/* Canonicalize this to "hkp" so it works with both the internal
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and external keyserver interface. */
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opt.keyserver_scheme="hkp";
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}
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if(assume_hkp || (uri[0]=='/' && uri[1]=='/'))
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{
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/* Two slashes means network path. */
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/* Skip over the "//", if any */
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if(!assume_hkp)
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uri+=2;
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/* Get the host */
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opt.keyserver_host=strsep(&uri,":/");
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if(opt.keyserver_host[0]=='\0')
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return G10ERR_BAD_URI;
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if(uri==NULL || uri[0]=='\0')
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opt.keyserver_port=NULL;
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else
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{
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char *ch;
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/* Get the port */
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opt.keyserver_port=strsep(&uri,"/");
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/* Ports are digits only */
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ch=opt.keyserver_port;
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while(*ch!='\0')
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{
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if(!digitp(ch))
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return G10ERR_BAD_URI;
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ch++;
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}
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/* It would seem to be reasonable to limit the range of the
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ports to values between 1-65535, but RFC 1738 and 1808
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imply there is no limit. Of course, the real world has
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limits. */
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}
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/* (any path part of the URI is discarded for now as no keyserver
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uses it yet) */
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}
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else if(uri[0]!='/')
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{
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/* No slash means opaque. Just record the opaque blob and get
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out. */
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opt.keyserver_opaque=uri;
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return 0;
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}
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else
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{
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/* One slash means absolute path. We don't need to support that
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yet. */
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return G10ERR_BAD_URI;
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}
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if(opt.keyserver_scheme[0]=='\0')
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return G10ERR_BAD_URI;
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return 0;
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}
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static void
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print_keyrec(int number,struct keyrec *keyrec)
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{
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int i;
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iobuf_writebyte(keyrec->uidbuf,0);
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iobuf_flush_temp(keyrec->uidbuf);
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printf("(%d)\t%s ",number,iobuf_get_temp_buffer(keyrec->uidbuf));
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if(keyrec->size>0)
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printf("%d bit ",keyrec->size);
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if(keyrec->type)
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{
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const char *str=pubkey_algo_to_string(keyrec->type);
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if(str)
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printf("%s ",str);
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else
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printf("unknown ");
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}
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switch(keyrec->desc.mode)
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{
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case KEYDB_SEARCH_MODE_SHORT_KID:
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printf("key %08lX",(ulong)keyrec->desc.u.kid[1]);
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break;
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case KEYDB_SEARCH_MODE_LONG_KID:
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printf("key %08lX%08lX",(ulong)keyrec->desc.u.kid[0],
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(ulong)keyrec->desc.u.kid[1]);
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break;
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case KEYDB_SEARCH_MODE_FPR16:
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printf("key ");
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for(i=0;i<16;i++)
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printf("%02X",(unsigned char)keyrec->desc.u.fpr[i]);
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break;
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case KEYDB_SEARCH_MODE_FPR20:
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printf("key ");
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for(i=0;i<20;i++)
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printf("%02X",(unsigned char)keyrec->desc.u.fpr[i]);
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break;
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default:
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BUG();
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break;
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}
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if(keyrec->createtime>0)
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printf(", created %s",strtimestamp(keyrec->createtime));
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if(keyrec->expiretime>0)
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printf(", expires %s",strtimestamp(keyrec->expiretime));
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if(keyrec->flags&1)
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printf(" (%s)",("revoked"));
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if(keyrec->flags&2)
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printf(" (%s)",("disabled"));
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if(keyrec->flags&4)
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printf(" (%s)",("expired"));
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printf("\n");
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}
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/* Returns a keyrec (which must be freed) once a key is complete, and
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NULL otherwise. Call with a NULL keystring once key parsing is
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complete to return any unfinished keys. */
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static struct keyrec *
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parse_keyrec(char *keystring)
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{
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static struct keyrec *work=NULL;
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struct keyrec *ret=NULL;
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char *record;
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int i;
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if(keystring==NULL)
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{
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if(work==NULL)
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return NULL;
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else if(work->desc.mode==KEYDB_SEARCH_MODE_NONE)
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{
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m_free(work);
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return NULL;
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}
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else
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{
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ret=work;
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work=NULL;
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return ret;
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}
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}
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if(work==NULL)
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{
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work=m_alloc_clear(sizeof(struct keyrec));
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work->uidbuf=iobuf_temp();
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}
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/* Remove trailing whitespace */
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for(i=strlen(keystring);i>0;i--)
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if(ascii_isspace(keystring[i-1]))
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keystring[i-1]='\0';
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else
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break;
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if((record=strsep(&keystring,":"))==NULL)
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return ret;
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if(ascii_strcasecmp("pub",record)==0)
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{
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char *tok;
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if(work->desc.mode)
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{
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ret=work;
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work=m_alloc_clear(sizeof(struct keyrec));
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work->uidbuf=iobuf_temp();
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}
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if((tok=strsep(&keystring,":"))==NULL)
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return ret;
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classify_user_id(tok,&work->desc);
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if(work->desc.mode!=KEYDB_SEARCH_MODE_SHORT_KID
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&& work->desc.mode!=KEYDB_SEARCH_MODE_LONG_KID
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&& work->desc.mode!=KEYDB_SEARCH_MODE_FPR16
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&& work->desc.mode!=KEYDB_SEARCH_MODE_FPR20)
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{
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work->desc.mode=KEYDB_SEARCH_MODE_NONE;
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return ret;
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}
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/* Note all items after this are optional. This allows us to
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have a pub line as simple as pub:keyid and nothing else. */
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work->lines++;
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if((tok=strsep(&keystring,":"))==NULL)
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return ret;
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work->type=atoi(tok);
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if((tok=strsep(&keystring,":"))==NULL)
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return ret;
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work->size=atoi(tok);
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if((tok=strsep(&keystring,":"))==NULL)
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return ret;
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work->createtime=atoi(tok);
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if((tok=strsep(&keystring,":"))==NULL)
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return ret;
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work->expiretime=atoi(tok);
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if((tok=strsep(&keystring,":"))==NULL)
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return ret;
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while(*tok)
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switch(*tok++)
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{
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case 'r':
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case 'R':
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work->flags|=1;
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break;
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case 'd':
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case 'D':
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work->flags|=2;
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break;
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case 'e':
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case 'E':
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work->flags|=4;
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break;
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}
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if(work->expiretime && work->expiretime<=make_timestamp())
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work->flags|=4;
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}
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else if(ascii_strcasecmp("uid",record)==0 && work->desc.mode)
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{
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char *userid,*tok,*decoded;
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if((tok=strsep(&keystring,":"))==NULL)
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return ret;
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if(strlen(tok)==0)
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return ret;
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userid=tok;
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/* By definition, de-%-encoding is always smaller than the
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original string so we can decode in place. */
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i=0;
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while(*tok)
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if(tok[0]=='%' && tok[1] && tok[2])
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{
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if((userid[i]=hextobyte(&tok[1]))==-1)
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userid[i]='?';
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i++;
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tok+=3;
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}
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else
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userid[i++]=*tok++;
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|
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/* We don't care about the other info provided in the uid: line
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since no keyserver supports marking userids with timestamps
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or revoked/expired/disabled yet. */
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/* No need to check for control characters, as utf8_to_native
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does this for us. */
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decoded=utf8_to_native(userid,i,0);
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if(strlen(decoded)>opt.screen_columns-10)
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decoded[opt.screen_columns-10]='\0';
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iobuf_writestr(work->uidbuf,decoded);
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m_free(decoded);
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iobuf_writestr(work->uidbuf,"\n\t");
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work->lines++;
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}
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|
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/* Ignore any records other than "pri" and "uid" for easy future
|
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growth. */
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return ret;
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}
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|
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/* TODO: do this as a list sent to keyserver_work rather than calling
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it once for each key to get the correct counts after the import
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(cosmetics, really) and to better take advantage of the keyservers
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that can do multiple fetches in one go (LDAP). */
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static int
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show_prompt(KEYDB_SEARCH_DESC *desc,int numdesc,int count,const char *search)
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{
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char *answer;
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if(count && opt.command_fd==-1)
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{
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static int from=1;
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tty_printf("Keys %d-%d of %d for \"%s\". ",from,numdesc,count,search);
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from=numdesc+1;
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}
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|
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answer=cpr_get_no_help("keysearch.prompt",
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_("Enter number(s), N)ext, or Q)uit > "));
|
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/* control-d */
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if(answer[0]=='\x04')
|
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{
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printf("Q\n");
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answer[0]='q';
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}
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|
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if(answer[0]=='q' || answer[0]=='Q')
|
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{
|
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m_free(answer);
|
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return 1;
|
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}
|
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else if(atoi(answer)>=1 && atoi(answer)<=numdesc)
|
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{
|
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char *split=answer,*num;
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|
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while((num=strsep(&split," ,"))!=NULL)
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if(atoi(num)>=1 && atoi(num)<=numdesc)
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keyserver_work(GET,NULL,&desc[atoi(num)-1],1);
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|
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m_free(answer);
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return 1;
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}
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|
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return 0;
|
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}
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|
|
/* Count and searchstr are just for cosmetics. If the count is too
|
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small, it will grow safely. If negative it disables the "Key x-y
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of z" messages. */
|
|
static void
|
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keyserver_search_prompt(IOBUF buffer,const char *searchstr)
|
|
{
|
|
int i=0,validcount=0,started=0,header=0,count=1,numlines=0;
|
|
unsigned int maxlen,buflen;
|
|
KEYDB_SEARCH_DESC *desc;
|
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byte *line=NULL;
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|
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desc=m_alloc(count*sizeof(KEYDB_SEARCH_DESC));
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|
|
for(;;)
|
|
{
|
|
struct keyrec *keyrec;
|
|
int rl;
|
|
|
|
maxlen=1024;
|
|
rl=iobuf_read_line(buffer,&line,&buflen,&maxlen);
|
|
|
|
if(opt.with_colons)
|
|
{
|
|
if(!header && ascii_strncasecmp("SEARCH ",line,7)==0
|
|
&& ascii_strncasecmp(" BEGIN",&line[strlen(line)-7],6)==0)
|
|
{
|
|
header=1;
|
|
continue;
|
|
}
|
|
else if(ascii_strncasecmp("SEARCH ",line,7)==0
|
|
&& ascii_strncasecmp(" END",&line[strlen(line)-5],4)==0)
|
|
continue;
|
|
|
|
printf("%s",line);
|
|
}
|
|
|
|
/* Look for an info: line. The only current info: values
|
|
defined are the version and key count. */
|
|
if(!started && rl>0 && ascii_strncasecmp("info:",line,5)==0)
|
|
{
|
|
char *tok,*str=&line[5];
|
|
|
|
if((tok=strsep(&str,":"))!=NULL)
|
|
{
|
|
int version;
|
|
|
|
if(sscanf(tok,"%d",&version)!=1)
|
|
version=1;
|
|
|
|
if(version!=1)
|
|
{
|
|
log_error(_("invalid keyserver protocol "
|
|
"(us %d!=handler %d)\n"),1,version);
|
|
break;
|
|
}
|
|
}
|
|
|
|
if((tok=strsep(&str,":"))!=NULL && sscanf(tok,"%d",&count)==1)
|
|
{
|
|
if(count==0)
|
|
goto notfound;
|
|
else if(count<0)
|
|
count=10;
|
|
else
|
|
validcount=1;
|
|
|
|
desc=m_realloc(desc,count*sizeof(KEYDB_SEARCH_DESC));
|
|
}
|
|
|
|
started=1;
|
|
continue;
|
|
}
|
|
|
|
if(rl==0)
|
|
{
|
|
keyrec=parse_keyrec(NULL);
|
|
|
|
if(keyrec==NULL)
|
|
{
|
|
if(i==0)
|
|
{
|
|
count=0;
|
|
break;
|
|
}
|
|
|
|
if(i!=count)
|
|
validcount=0;
|
|
|
|
for(;;)
|
|
{
|
|
if(show_prompt(desc,i,validcount?count:0,searchstr))
|
|
break;
|
|
validcount=0;
|
|
}
|
|
|
|
break;
|
|
}
|
|
}
|
|
else
|
|
keyrec=parse_keyrec(line);
|
|
|
|
if(i==count)
|
|
{
|
|
/* keyserver helper sent more keys than they claimed in the
|
|
info: line. */
|
|
count+=10;
|
|
desc=m_realloc(desc,count*sizeof(KEYDB_SEARCH_DESC));
|
|
validcount=0;
|
|
}
|
|
|
|
if(keyrec)
|
|
{
|
|
desc[i]=keyrec->desc;
|
|
|
|
if(!opt.with_colons)
|
|
{
|
|
/* screen_lines - 1 for the prompt. */
|
|
if(numlines+keyrec->lines>opt.screen_lines-1)
|
|
{
|
|
if(show_prompt(desc,i,validcount?count:0,searchstr))
|
|
break;
|
|
else
|
|
numlines=0;
|
|
}
|
|
|
|
print_keyrec(i+1,keyrec);
|
|
}
|
|
|
|
numlines+=keyrec->lines;
|
|
iobuf_close(keyrec->uidbuf);
|
|
m_free(keyrec);
|
|
|
|
started=1;
|
|
i++;
|
|
}
|
|
}
|
|
|
|
m_free(desc);
|
|
m_free(line);
|
|
|
|
notfound:
|
|
if(count==0)
|
|
{
|
|
if(searchstr)
|
|
log_info(_("key \"%s\" not found on keyserver\n"),searchstr);
|
|
else
|
|
log_info(_("key not found on keyserver\n"));
|
|
return;
|
|
}
|
|
}
|
|
|
|
#define KEYSERVER_ARGS_KEEP " -o \"%O\" \"%I\""
|
|
#define KEYSERVER_ARGS_NOKEEP " -o \"%o\" \"%i\""
|
|
|
|
static int
|
|
keyserver_spawn(int action,STRLIST list,
|
|
KEYDB_SEARCH_DESC *desc,int count,int *prog)
|
|
{
|
|
int ret=0,i,gotversion=0,outofband=0;
|
|
STRLIST temp;
|
|
unsigned int maxlen,buflen;
|
|
char *command=NULL,*searchstr=NULL;
|
|
byte *line=NULL;
|
|
struct kopts *kopts;
|
|
struct exec_info *spawn;
|
|
|
|
#ifdef EXEC_TEMPFILE_ONLY
|
|
opt.keyserver_options.use_temp_files=1;
|
|
#endif
|
|
|
|
/* Push the libexecdir into path. If DISABLE_KEYSERVER_PATH is set,
|
|
use the 0 arg to replace the path. */
|
|
#ifdef DISABLE_KEYSERVER_PATH
|
|
set_exec_path(GNUPG_LIBEXECDIR,0);
|
|
#else
|
|
set_exec_path(GNUPG_LIBEXECDIR,opt.exec_path_set);
|
|
#endif
|
|
|
|
/* Build the filename for the helper to execute */
|
|
command=m_alloc(strlen("gpgkeys_")+strlen(opt.keyserver_scheme)+1);
|
|
strcpy(command,"gpgkeys_");
|
|
strcat(command,opt.keyserver_scheme);
|
|
|
|
if(opt.keyserver_options.use_temp_files)
|
|
{
|
|
if(opt.keyserver_options.keep_temp_files)
|
|
{
|
|
command=m_realloc(command,strlen(command)+
|
|
strlen(KEYSERVER_ARGS_KEEP)+1);
|
|
strcat(command,KEYSERVER_ARGS_KEEP);
|
|
}
|
|
else
|
|
{
|
|
command=m_realloc(command,strlen(command)+
|
|
strlen(KEYSERVER_ARGS_NOKEEP)+1);
|
|
strcat(command,KEYSERVER_ARGS_NOKEEP);
|
|
}
|
|
|
|
ret=exec_write(&spawn,NULL,command,NULL,0,0);
|
|
}
|
|
else
|
|
ret=exec_write(&spawn,command,NULL,NULL,0,0);
|
|
|
|
if(ret)
|
|
return ret;
|
|
|
|
fprintf(spawn->tochild,"# This is a gpg keyserver communications file\n");
|
|
fprintf(spawn->tochild,"VERSION %d\n",KEYSERVER_PROTO_VERSION);
|
|
fprintf(spawn->tochild,"PROGRAM %s\n",VERSION);
|
|
fprintf(spawn->tochild,"SCHEME %s\n",opt.keyserver_scheme);
|
|
|
|
if(opt.keyserver_opaque)
|
|
fprintf(spawn->tochild,"OPAQUE %s\n",opt.keyserver_opaque);
|
|
else
|
|
{
|
|
if(opt.keyserver_host)
|
|
fprintf(spawn->tochild,"HOST %s\n",opt.keyserver_host);
|
|
|
|
if(opt.keyserver_port)
|
|
fprintf(spawn->tochild,"PORT %s\n",opt.keyserver_port);
|
|
}
|
|
|
|
/* Write options */
|
|
|
|
for(i=0,kopts=keyserver_opts;kopts[i].name;i++)
|
|
if(*(kopts[i].flag) && kopts[i].tell)
|
|
fprintf(spawn->tochild,"OPTION %s\n",kopts[i].name);
|
|
|
|
for(i=0;i<opt.keyserver_options.verbose;i++)
|
|
fprintf(spawn->tochild,"OPTION verbose\n");
|
|
|
|
temp=opt.keyserver_options.other;
|
|
|
|
for(;temp;temp=temp->next)
|
|
fprintf(spawn->tochild,"OPTION %s\n",temp->d);
|
|
|
|
switch(action)
|
|
{
|
|
case GET:
|
|
{
|
|
fprintf(spawn->tochild,"COMMAND GET\n\n");
|
|
|
|
/* Which keys do we want? */
|
|
|
|
for(i=0;i<count;i++)
|
|
{
|
|
if(desc[i].mode==KEYDB_SEARCH_MODE_FPR20)
|
|
{
|
|
int f;
|
|
|
|
fprintf(spawn->tochild,"0x");
|
|
|
|
for(f=0;f<MAX_FINGERPRINT_LEN;f++)
|
|
fprintf(spawn->tochild,"%02X",(byte)desc[i].u.fpr[f]);
|
|
|
|
fprintf(spawn->tochild,"\n");
|
|
}
|
|
else if(desc[i].mode==KEYDB_SEARCH_MODE_FPR16)
|
|
{
|
|
int f;
|
|
|
|
fprintf(spawn->tochild,"0x");
|
|
|
|
for(f=0;f<16;f++)
|
|
fprintf(spawn->tochild,"%02X",(byte)desc[i].u.fpr[f]);
|
|
|
|
fprintf(spawn->tochild,"\n");
|
|
}
|
|
else if(desc[i].mode==KEYDB_SEARCH_MODE_LONG_KID)
|
|
fprintf(spawn->tochild,"0x%08lX%08lX\n",
|
|
(ulong)desc[i].u.kid[0],
|
|
(ulong)desc[i].u.kid[1]);
|
|
else
|
|
fprintf(spawn->tochild,"0x%08lX\n",
|
|
(ulong)desc[i].u.kid[1]);
|
|
}
|
|
|
|
fprintf(spawn->tochild,"\n");
|
|
|
|
break;
|
|
}
|
|
|
|
case SEND:
|
|
{
|
|
STRLIST key;
|
|
|
|
/* Note the extra \n here to send an empty keylist block */
|
|
fprintf(spawn->tochild,"COMMAND SEND\n\n\n");
|
|
|
|
for(key=list;key!=NULL;key=key->next)
|
|
{
|
|
armor_filter_context_t afx;
|
|
IOBUF buffer=iobuf_temp();
|
|
KBNODE block;
|
|
|
|
temp=NULL;
|
|
add_to_strlist(&temp,key->d);
|
|
|
|
memset(&afx,0,sizeof(afx));
|
|
afx.what=1;
|
|
iobuf_push_filter(buffer,armor_filter,&afx);
|
|
|
|
/* TODO: Remove Comment: lines from keys exported this
|
|
way? */
|
|
|
|
if(export_pubkeys_stream(buffer,temp,&block,
|
|
opt.keyserver_options.export_options)==-1)
|
|
iobuf_close(buffer);
|
|
else
|
|
{
|
|
KBNODE node;
|
|
|
|
iobuf_flush_temp(buffer);
|
|
|
|
merge_keys_and_selfsig(block);
|
|
|
|
fprintf(spawn->tochild,"INFO %08lX%08lX BEGIN\n",
|
|
(ulong)block->pkt->pkt.public_key->keyid[0],
|
|
(ulong)block->pkt->pkt.public_key->keyid[1]);
|
|
|
|
for(node=block;node;node=node->next)
|
|
{
|
|
switch(node->pkt->pkttype)
|
|
{
|
|
default:
|
|
continue;
|
|
|
|
case PKT_PUBLIC_KEY:
|
|
case PKT_PUBLIC_SUBKEY:
|
|
{
|
|
PKT_public_key *pk=node->pkt->pkt.public_key;
|
|
|
|
keyid_from_pk(pk,NULL);
|
|
|
|
fprintf(spawn->tochild,"%sb:%08lX%08lX:%u:%u:%u:%u:",
|
|
node->pkt->pkttype==PKT_PUBLIC_KEY?"pu":"su",
|
|
(ulong)pk->keyid[0],(ulong)pk->keyid[1],
|
|
pk->pubkey_algo,
|
|
nbits_from_pk(pk),
|
|
pk->timestamp,
|
|
pk->expiredate);
|
|
|
|
if(pk->is_revoked)
|
|
fprintf(spawn->tochild,"r");
|
|
if(pk->has_expired)
|
|
fprintf(spawn->tochild,"e");
|
|
|
|
fprintf(spawn->tochild,"\n");
|
|
}
|
|
break;
|
|
|
|
case PKT_USER_ID:
|
|
{
|
|
PKT_user_id *uid=node->pkt->pkt.user_id;
|
|
int r;
|
|
|
|
if(uid->attrib_data)
|
|
continue;
|
|
|
|
fprintf(spawn->tochild,"uid:");
|
|
|
|
/* Quote ':', '%', and any 8-bit
|
|
characters */
|
|
for(r=0;r<uid->len;r++)
|
|
{
|
|
if(uid->name[r]==':' || uid->name[r]=='%'
|
|
|| uid->name[r]&0x80)
|
|
fprintf(spawn->tochild,"%%%02X",
|
|
(byte)uid->name[r]);
|
|
else
|
|
fprintf(spawn->tochild,"%c",uid->name[r]);
|
|
}
|
|
|
|
fprintf(spawn->tochild,":%u:%u:",
|
|
uid->created,uid->expiredate);
|
|
|
|
if(uid->is_revoked)
|
|
fprintf(spawn->tochild,"r");
|
|
if(uid->is_expired)
|
|
fprintf(spawn->tochild,"e");
|
|
|
|
fprintf(spawn->tochild,"\n");
|
|
}
|
|
break;
|
|
|
|
/* This bit is really for the benefit of
|
|
people who store their keys in LDAP
|
|
servers. It makes it easy to do queries
|
|
for things like "all keys signed by
|
|
Isabella". */
|
|
case PKT_SIGNATURE:
|
|
{
|
|
PKT_signature *sig=node->pkt->pkt.signature;
|
|
|
|
if(!IS_UID_SIG(sig))
|
|
continue;
|
|
|
|
fprintf(spawn->tochild,"sig:%08lX%08lX:%X:%u:%u\n",
|
|
(ulong)sig->keyid[0],(ulong)sig->keyid[1],
|
|
sig->sig_class,sig->timestamp,
|
|
sig->expiredate);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
fprintf(spawn->tochild,"INFO %08lX%08lX END\n",
|
|
(ulong)block->pkt->pkt.public_key->keyid[0],
|
|
(ulong)block->pkt->pkt.public_key->keyid[1]);
|
|
|
|
fprintf(spawn->tochild,"KEY %s BEGIN\n",key->d);
|
|
fwrite(iobuf_get_temp_buffer(buffer),
|
|
iobuf_get_temp_length(buffer),1,spawn->tochild);
|
|
fprintf(spawn->tochild,"KEY %s END\n",key->d);
|
|
|
|
iobuf_close(buffer);
|
|
release_kbnode(block);
|
|
}
|
|
|
|
free_strlist(temp);
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
case SEARCH:
|
|
{
|
|
STRLIST key;
|
|
|
|
fprintf(spawn->tochild,"COMMAND SEARCH\n\n");
|
|
|
|
/* Which keys do we want? Remember that the gpgkeys_ program
|
|
is going to lump these together into a search string. */
|
|
|
|
for(key=list;key!=NULL;key=key->next)
|
|
{
|
|
fprintf(spawn->tochild,"%s\n",key->d);
|
|
if(key!=list)
|
|
{
|
|
searchstr=m_realloc(searchstr,
|
|
strlen(searchstr)+strlen(key->d)+2);
|
|
strcat(searchstr," ");
|
|
}
|
|
else
|
|
{
|
|
searchstr=m_alloc(strlen(key->d)+1);
|
|
searchstr[0]='\0';
|
|
}
|
|
|
|
strcat(searchstr,key->d);
|
|
}
|
|
|
|
fprintf(spawn->tochild,"\n");
|
|
|
|
break;
|
|
}
|
|
|
|
default:
|
|
log_fatal(_("no keyserver action!\n"));
|
|
break;
|
|
}
|
|
|
|
/* Done sending, so start reading. */
|
|
ret=exec_read(spawn);
|
|
if(ret)
|
|
goto fail;
|
|
|
|
/* Now handle the response */
|
|
|
|
for(;;)
|
|
{
|
|
int plen;
|
|
char *ptr;
|
|
|
|
maxlen=1024;
|
|
if(iobuf_read_line(spawn->fromchild,&line,&buflen,&maxlen)==0)
|
|
{
|
|
ret=G10ERR_READ_FILE;
|
|
goto fail; /* i.e. EOF */
|
|
}
|
|
|
|
ptr=line;
|
|
|
|
/* remove trailing whitespace */
|
|
plen=strlen(ptr);
|
|
while(plen>0 && ascii_isspace(ptr[plen-1]))
|
|
plen--;
|
|
plen[ptr]='\0';
|
|
|
|
if(*ptr=='\0')
|
|
break;
|
|
|
|
if(ascii_strncasecmp(ptr,"VERSION ",8)==0)
|
|
{
|
|
gotversion=1;
|
|
|
|
if(atoi(&ptr[8])!=KEYSERVER_PROTO_VERSION)
|
|
{
|
|
log_error(_("invalid keyserver protocol (us %d!=handler %d)\n"),
|
|
KEYSERVER_PROTO_VERSION,atoi(&ptr[8]));
|
|
goto fail;
|
|
}
|
|
}
|
|
else if(ascii_strncasecmp(ptr,"PROGRAM ",8)==0)
|
|
{
|
|
if(ascii_strncasecmp(&ptr[8],VERSION,strlen(VERSION))!=0)
|
|
log_info(_("WARNING: keyserver handler from a different "
|
|
"version of GnuPG (%s)\n"),&ptr[8]);
|
|
}
|
|
else if(ascii_strncasecmp(ptr,"OPTION OUTOFBAND",16)==0)
|
|
outofband=1; /* Currently the only OPTION */
|
|
}
|
|
|
|
if(!gotversion)
|
|
{
|
|
log_error(_("keyserver did not send VERSION\n"));
|
|
goto fail;
|
|
}
|
|
|
|
if(!outofband)
|
|
switch(action)
|
|
{
|
|
case GET:
|
|
{
|
|
void *stats_handle;
|
|
|
|
stats_handle=import_new_stats_handle();
|
|
|
|
/* Slurp up all the key data. In the future, it might be
|
|
nice to look for KEY foo OUTOFBAND and FAILED indicators.
|
|
It's harmless to ignore them, but ignoring them does make
|
|
gpg complain about "no valid OpenPGP data found". One
|
|
way to do this could be to continue parsing this
|
|
line-by-line and make a temp iobuf for each key. */
|
|
|
|
import_keys_stream(spawn->fromchild,stats_handle,
|
|
opt.keyserver_options.import_options);
|
|
|
|
import_print_stats(stats_handle);
|
|
import_release_stats_handle(stats_handle);
|
|
|
|
break;
|
|
}
|
|
|
|
/* Nothing to do here */
|
|
case SEND:
|
|
break;
|
|
|
|
case SEARCH:
|
|
{
|
|
keyserver_search_prompt(spawn->fromchild,searchstr);
|
|
|
|
break;
|
|
}
|
|
|
|
default:
|
|
log_fatal(_("no keyserver action!\n"));
|
|
break;
|
|
}
|
|
|
|
fail:
|
|
m_free(line);
|
|
|
|
*prog=exec_finish(spawn);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int
|
|
keyserver_work(int action,STRLIST list,KEYDB_SEARCH_DESC *desc,int count)
|
|
{
|
|
int rc=0,ret=0;
|
|
|
|
if(opt.keyserver_scheme==NULL)
|
|
{
|
|
log_error(_("no keyserver known (use option --keyserver)\n"));
|
|
return G10ERR_BAD_URI;
|
|
}
|
|
|
|
#ifdef DISABLE_KEYSERVER_HELPERS
|
|
|
|
log_error(_("external keyserver calls are not supported in this build\n"));
|
|
return G10ERR_KEYSERVER;
|
|
|
|
#else
|
|
/* Spawn a handler */
|
|
|
|
rc=keyserver_spawn(action,list,desc,count,&ret);
|
|
if(ret)
|
|
{
|
|
switch(ret)
|
|
{
|
|
case KEYSERVER_SCHEME_NOT_FOUND:
|
|
log_error(_("no handler for keyserver scheme \"%s\"\n"),
|
|
opt.keyserver_scheme);
|
|
break;
|
|
|
|
case KEYSERVER_NOT_SUPPORTED:
|
|
log_error(_("action \"%s\" not supported with keyserver "
|
|
"scheme \"%s\"\n"),
|
|
action==GET?"get":action==SEND?"send":
|
|
action==SEARCH?"search":"unknown",
|
|
opt.keyserver_scheme);
|
|
break;
|
|
|
|
case KEYSERVER_VERSION_ERROR:
|
|
log_error(_("gpgkeys_%s does not support handler version %d\n"),
|
|
opt.keyserver_scheme,KEYSERVER_PROTO_VERSION);
|
|
break;
|
|
|
|
case KEYSERVER_INTERNAL_ERROR:
|
|
default:
|
|
log_error(_("keyserver internal error\n"));
|
|
break;
|
|
}
|
|
|
|
return G10ERR_KEYSERVER;
|
|
}
|
|
|
|
if(rc)
|
|
{
|
|
log_error(_("keyserver communications error: %s\n"),g10_errstr(rc));
|
|
|
|
return rc;
|
|
}
|
|
|
|
return 0;
|
|
#endif /* ! DISABLE_KEYSERVER_HELPERS*/
|
|
}
|
|
|
|
int
|
|
keyserver_export(STRLIST users)
|
|
{
|
|
STRLIST sl=NULL;
|
|
KEYDB_SEARCH_DESC desc;
|
|
int rc=0;
|
|
|
|
/* Weed out descriptors that we don't support sending */
|
|
for(;users;users=users->next)
|
|
{
|
|
classify_user_id (users->d, &desc);
|
|
if(desc.mode!=KEYDB_SEARCH_MODE_SHORT_KID &&
|
|
desc.mode!=KEYDB_SEARCH_MODE_LONG_KID &&
|
|
desc.mode!=KEYDB_SEARCH_MODE_FPR16 &&
|
|
desc.mode!=KEYDB_SEARCH_MODE_FPR20)
|
|
{
|
|
log_error(_("\"%s\" not a key ID: skipping\n"),users->d);
|
|
continue;
|
|
}
|
|
else
|
|
append_to_strlist(&sl,users->d);
|
|
}
|
|
|
|
if(sl)
|
|
{
|
|
rc=keyserver_work(SEND,sl,NULL,0);
|
|
free_strlist(sl);
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
keyserver_import(STRLIST users)
|
|
{
|
|
KEYDB_SEARCH_DESC *desc;
|
|
int num=100,count=0;
|
|
int rc=0;
|
|
|
|
/* Build a list of key ids */
|
|
desc=m_alloc(sizeof(KEYDB_SEARCH_DESC)*num);
|
|
|
|
for(;users;users=users->next)
|
|
{
|
|
classify_user_id (users->d, &desc[count]);
|
|
if(desc[count].mode!=KEYDB_SEARCH_MODE_SHORT_KID &&
|
|
desc[count].mode!=KEYDB_SEARCH_MODE_LONG_KID &&
|
|
desc[count].mode!=KEYDB_SEARCH_MODE_FPR16 &&
|
|
desc[count].mode!=KEYDB_SEARCH_MODE_FPR20)
|
|
{
|
|
log_error(_("\"%s\" not a key ID: skipping\n"),users->d);
|
|
continue;
|
|
}
|
|
|
|
count++;
|
|
if(count==num)
|
|
{
|
|
num+=100;
|
|
desc=m_realloc(desc,sizeof(KEYDB_SEARCH_DESC)*num);
|
|
}
|
|
}
|
|
|
|
if(count>0)
|
|
rc=keyserver_work(GET,NULL,desc,count);
|
|
|
|
m_free(desc);
|
|
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
keyserver_import_fprint(const byte *fprint,size_t fprint_len)
|
|
{
|
|
KEYDB_SEARCH_DESC desc;
|
|
|
|
memset(&desc,0,sizeof(desc));
|
|
|
|
if(fprint_len==16)
|
|
desc.mode=KEYDB_SEARCH_MODE_FPR16;
|
|
else if(fprint_len==20)
|
|
desc.mode=KEYDB_SEARCH_MODE_FPR20;
|
|
else
|
|
return -1;
|
|
|
|
memcpy(desc.u.fpr,fprint,fprint_len);
|
|
|
|
return keyserver_work(GET,NULL,&desc,1);
|
|
}
|
|
|
|
int
|
|
keyserver_import_keyid(u32 *keyid)
|
|
{
|
|
KEYDB_SEARCH_DESC desc;
|
|
|
|
memset(&desc,0,sizeof(desc));
|
|
|
|
desc.mode=KEYDB_SEARCH_MODE_LONG_KID;
|
|
desc.u.kid[0]=keyid[0];
|
|
desc.u.kid[1]=keyid[1];
|
|
|
|
return keyserver_work(GET,NULL,&desc,1);
|
|
}
|
|
|
|
/* code mostly stolen from do_export_stream */
|
|
static int
|
|
keyidlist(STRLIST users,KEYDB_SEARCH_DESC **klist,int *count,int fakev3)
|
|
{
|
|
int rc=0,ndesc,num=100;
|
|
KBNODE keyblock=NULL,node;
|
|
KEYDB_HANDLE kdbhd;
|
|
KEYDB_SEARCH_DESC *desc;
|
|
STRLIST sl;
|
|
|
|
*count=0;
|
|
|
|
*klist=m_alloc(sizeof(KEYDB_SEARCH_DESC)*num);
|
|
|
|
kdbhd=keydb_new(0);
|
|
|
|
if(!users)
|
|
{
|
|
ndesc = 1;
|
|
desc = m_alloc_clear ( ndesc * sizeof *desc);
|
|
desc[0].mode = KEYDB_SEARCH_MODE_FIRST;
|
|
}
|
|
else
|
|
{
|
|
for (ndesc=0, sl=users; sl; sl = sl->next, ndesc++)
|
|
;
|
|
desc = m_alloc ( ndesc * sizeof *desc);
|
|
|
|
for (ndesc=0, sl=users; sl; sl = sl->next)
|
|
{
|
|
if(classify_user_id (sl->d, desc+ndesc))
|
|
ndesc++;
|
|
else
|
|
log_error (_("key `%s' not found: %s\n"),
|
|
sl->d, g10_errstr (G10ERR_INV_USER_ID));
|
|
}
|
|
}
|
|
|
|
while (!(rc = keydb_search (kdbhd, desc, ndesc)))
|
|
{
|
|
if (!users)
|
|
desc[0].mode = KEYDB_SEARCH_MODE_NEXT;
|
|
|
|
/* read the keyblock */
|
|
rc = keydb_get_keyblock (kdbhd, &keyblock );
|
|
if( rc )
|
|
{
|
|
log_error (_("error reading keyblock: %s\n"), g10_errstr(rc) );
|
|
goto leave;
|
|
}
|
|
|
|
if((node=find_kbnode(keyblock,PKT_PUBLIC_KEY)))
|
|
{
|
|
/* This is to work around a bug in some keyservers (pksd and
|
|
OKS) that calculate v4 RSA keyids as if they were v3 RSA.
|
|
The answer is to refresh both the correct v4 keyid
|
|
(e.g. 99242560) and the fake v3 keyid (e.g. 68FDDBC7).
|
|
This only happens for key refresh using the HKP scheme
|
|
and if the refresh-add-fake-v3-keyids keyserver option is
|
|
set. */
|
|
if(fakev3 && is_RSA(node->pkt->pkt.public_key->pubkey_algo) &&
|
|
node->pkt->pkt.public_key->version>=4)
|
|
{
|
|
(*klist)[*count].mode=KEYDB_SEARCH_MODE_LONG_KID;
|
|
mpi_get_keyid(node->pkt->pkt.public_key->pkey[0],
|
|
(*klist)[*count].u.kid);
|
|
(*count)++;
|
|
|
|
if(*count==num)
|
|
{
|
|
num+=100;
|
|
*klist=m_realloc(*klist,sizeof(KEYDB_SEARCH_DESC)*num);
|
|
}
|
|
}
|
|
|
|
/* v4 keys get full fingerprints. v3 keys get long keyids.
|
|
This is because it's easy to calculate any sort of key id
|
|
from a v4 fingerprint, but not a v3 fingerprint. */
|
|
|
|
if(node->pkt->pkt.public_key->version<4)
|
|
{
|
|
(*klist)[*count].mode=KEYDB_SEARCH_MODE_LONG_KID;
|
|
keyid_from_pk(node->pkt->pkt.public_key,
|
|
(*klist)[*count].u.kid);
|
|
}
|
|
else
|
|
{
|
|
size_t dummy;
|
|
|
|
(*klist)[*count].mode=KEYDB_SEARCH_MODE_FPR20;
|
|
fingerprint_from_pk(node->pkt->pkt.public_key,
|
|
(*klist)[*count].u.fpr,&dummy);
|
|
}
|
|
|
|
(*count)++;
|
|
|
|
if(*count==num)
|
|
{
|
|
num+=100;
|
|
*klist=m_realloc(*klist,sizeof(KEYDB_SEARCH_DESC)*num);
|
|
}
|
|
}
|
|
}
|
|
|
|
if(rc==-1)
|
|
rc=0;
|
|
|
|
leave:
|
|
m_free(desc);
|
|
keydb_release(kdbhd);
|
|
release_kbnode(keyblock);
|
|
|
|
return rc;
|
|
}
|
|
|
|
/* Note this is different than the original HKP refresh. It allows
|
|
usernames to refresh only part of the keyring. */
|
|
|
|
int
|
|
keyserver_refresh(STRLIST users)
|
|
{
|
|
int rc,count,fakev3=0;
|
|
KEYDB_SEARCH_DESC *desc;
|
|
|
|
/* We switch merge_only on during a refresh, as 'refresh' should
|
|
never import new keys, even if their keyids match. Is it worth
|
|
preserving the old merge_only value here? */
|
|
opt.import_options|=IMPORT_MERGE_ONLY;
|
|
|
|
/* If refresh_add_fake_v3_keyids is on and it's a HKP or MAILTO
|
|
scheme, then enable fake v3 keyid generation. */
|
|
if(opt.keyserver_options.fake_v3_keyids && opt.keyserver_scheme &&
|
|
(ascii_strcasecmp(opt.keyserver_scheme,"hkp")==0 ||
|
|
ascii_strcasecmp(opt.keyserver_scheme,"mailto")==0))
|
|
fakev3=1;
|
|
|
|
rc=keyidlist(users,&desc,&count,fakev3);
|
|
if(rc)
|
|
return rc;
|
|
|
|
if(count>0)
|
|
{
|
|
if(opt.keyserver_uri)
|
|
{
|
|
if(count==1)
|
|
log_info(_("refreshing 1 key from %s\n"),opt.keyserver_uri);
|
|
else
|
|
log_info(_("refreshing %d keys from %s\n"),
|
|
count,opt.keyserver_uri);
|
|
}
|
|
|
|
rc=keyserver_work(GET,NULL,desc,count);
|
|
}
|
|
|
|
m_free(desc);
|
|
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
keyserver_search(STRLIST tokens)
|
|
{
|
|
if(tokens)
|
|
return keyserver_work(SEARCH,tokens,NULL,0);
|
|
else
|
|
return 0;
|
|
}
|