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* gpgkeys_hkp.c (srv_replace): New function to transform a SRV
hostname to a real hostname. (main): Call it from here for the HAVE_LIBCURL case (without libcurl is handled via the curl-shim).
This commit is contained in:
David Shaw
parent
a1ec7163d9
commit
ee9edfe19f
@ -1,3 +1,10 @@
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2009-04-20 David Shaw <dshaw@jabberwocky.com>
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* gpgkeys_hkp.c (srv_replace): New function to transform a SRV
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hostname to a real hostname.
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(main): Call it from here for the HAVE_LIBCURL case (without
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libcurl is handled via the curl-shim).
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2009-04-02 David Shaw <dshaw@jabberwocky.com>
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* curl-shim.h, curl-shim.c (curl_easy_setopt, curl_easy_perform):
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@ -43,6 +43,9 @@
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#else
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#include "curl-shim.h"
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#endif
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#ifdef USE_DNS_SRV
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#include "srv.h"
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#endif
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#include "compat.h"
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#include "keyserver.h"
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#include "ksutil.h"
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@ -188,6 +191,7 @@ send_key(int *eof)
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strcat(key,encoded_key);
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strcpy(request,proto);
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strcat(request,"://");
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strcat(request,opt->host);
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strcat(request,":");
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strcat(request,port);
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@ -252,6 +256,7 @@ get_key(char *getkey)
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}
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strcpy(request,proto);
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strcat(request,"://");
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strcat(request,opt->host);
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strcat(request,":");
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strcat(request,port);
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@ -330,6 +335,7 @@ get_name(const char *getkey)
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fprintf(output,"NAME %s BEGIN\n",getkey);
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strcpy(request,proto);
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strcat(request,"://");
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strcat(request,opt->host);
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strcat(request,":");
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strcat(request,port);
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@ -413,6 +419,7 @@ search_key(const char *searchkey)
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fprintf(output,"SEARCH %s BEGIN\n",searchkey);
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strcpy(request,proto);
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strcat(request,"://");
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strcat(request,opt->host);
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strcat(request,":");
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strcat(request,port);
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@ -483,6 +490,49 @@ fail_all(struct keylist *keylist,int err)
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}
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}
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/* If there is a SRV record, take the highest ranked possibility.
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This is a hack, as we don't proceed downwards. */
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static void
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srv_replace(void)
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{
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#ifdef USE_DNS_SRV
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struct srventry *srvlist=NULL;
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int srvcount;
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if(1+strlen(opt->scheme)+6+strlen(opt->host)+1<=MAXDNAME)
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{
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char srvname[MAXDNAME];
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strcpy(srvname,"_");
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strcat(srvname,opt->scheme);
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strcat(srvname,"._tcp.");
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strcat(srvname,opt->host);
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srvcount=getsrv(srvname,&srvlist);
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}
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if(srvlist)
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{
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char *newname,*newport;
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newname=strdup(srvlist->target);
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newport=malloc(MAX_PORT);
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if(newname && newport)
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{
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free(opt->host);
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free(opt->port);
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opt->host=newname;
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snprintf(newport,MAX_PORT,"%u",srvlist->port);
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opt->port=newport;
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}
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else
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{
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free(newname);
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free(newport);
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}
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}
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#endif
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}
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static void
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show_help (FILE *fp)
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{
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@ -495,7 +545,7 @@ show_help (FILE *fp)
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int
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main(int argc,char *argv[])
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{
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int arg,ret=KEYSERVER_INTERNAL_ERROR;
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int arg,ret=KEYSERVER_INTERNAL_ERROR,try_srv=1;
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char line[MAX_LINE];
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int failed=0;
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struct keylist *keylist=NULL,*keyptr=NULL;
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@ -609,15 +659,14 @@ main(int argc,char *argv[])
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}
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}
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}
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#if 0
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else if(ascii_strcasecmp(start,"try-dns-srv")==0)
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{
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if(no)
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http_flags&=~HTTP_FLAG_TRY_SRV;
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try_srv=0;
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else
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http_flags|=HTTP_FLAG_TRY_SRV;
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try_srv=1;
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}
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#endif
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continue;
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}
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}
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@ -632,18 +681,15 @@ main(int argc,char *argv[])
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if(ascii_strcasecmp(opt->scheme,"hkps")==0)
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{
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proto="https://";
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proto="https";
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port="443";
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}
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else
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{
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proto="http://";
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proto="http";
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port="11371";
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}
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if(opt->port)
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port=opt->port;
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if(!opt->host)
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{
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fprintf(console,"gpgkeys: no keyserver host provided\n");
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@ -665,6 +711,26 @@ main(int argc,char *argv[])
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goto fail;
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}
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/* If the user gives a :port, then disable SRV. The semantics of a
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specified port and SRV do not play well together. */
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if(opt->port)
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port=opt->port;
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else if(try_srv)
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{
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#ifdef HAVE_LIBCURL
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/* We're using libcurl, so fake SRV support via our wrapper.
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This isn't as good as true SRV support, as we do not try all
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possible targets at one particular level and work our way
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down the list, but it's better than nothing. */
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srv_replace();
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#else
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/* We're using our internal curl shim, so we can use its (true)
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SRV support. Obviously, CURLOPT_SRVTAG_GPG_HACK isn't a real
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libcurl option. It's specific to our shim. */
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curl_easy_setopt(curl,CURLOPT_SRVTAG_GPG_HACK,opt->scheme);
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#endif
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}
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curl_easy_setopt(curl,CURLOPT_ERRORBUFFER,errorbuffer);
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if(opt->auth)
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@ -683,13 +749,6 @@ main(int argc,char *argv[])
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if(proxy)
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curl_easy_setopt(curl,CURLOPT_PROXY,proxy);
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#if 0
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/* By suggested convention, if the user gives a :port, then disable
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SRV. */
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if(opt->port)
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http_flags&=~HTTP_FLAG_TRY_SRV;
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#endif
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/* If it's a GET or a SEARCH, the next thing to come in is the
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keyids. If it's a SEND, then there are no keyids. */
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