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/* Copyright 2009, UCAR/Unidata and OPeNDAP, Inc.
See the COPYRIGHT file for more information. */
#include "config.h"
#include "ncrc.h"
#include "ocinternal.h"
#include "ocdebug.h"
#include "occurlfunctions.h"
#define OC_MAX_REDIRECTS 20L
/* Mnemonic */
#define OPTARG void*
/* Define some .rc file entries of interest*/
#define NETRCFILETAG "HTTP.NETRC"
/* Check return value */
#define CHECK(state,flag,value) {if(check(state,flag,(void*)value) != OC_NOERR) {goto done;}}
static OCerror
check(OCstate* state, int flag, void* value)
{
OCerror stat = ocset_curlopt(state,flag,value);
return stat;
}
/*
Set a specific curl flag; primary wrapper for curl_easy_setopt
*/
OCerror
ocset_curlopt(OCstate* state, int flag, void* value)
{
OCerror stat = OC_NOERR;
CURLcode cstat = CURLE_OK;
cstat = OCCURLERR(state,curl_easy_setopt(state->curl,flag,value));
if(cstat != CURLE_OK)
stat = OC_ECURL;
return stat;
}
/*
Update a specific flag from state
*/
OCerror
ocset_curlflag(OCstate* state, int flag)
{
OCerror stat = OC_NOERR;
switch (flag) {
case CURLOPT_USERPWD: /* Does both user and pwd */
if(state->auth.creds.user != NULL && state->auth.creds.pwd != NULL) {
CHECK(state, CURLOPT_USERNAME, state->auth.creds.user);
CHECK(state, CURLOPT_PASSWORD, state->auth.creds.pwd);
CHECK(state, CURLOPT_HTTPAUTH, (OPTARG)CURLAUTH_ANY);
}
break;
case CURLOPT_COOKIEJAR: case CURLOPT_COOKIEFILE:
if(state->auth.curlflags.cookiejar) {
/* Assume we will read and write cookies to same place */
CHECK(state, CURLOPT_COOKIEJAR, state->auth.curlflags.cookiejar);
CHECK(state, CURLOPT_COOKIEFILE, state->auth.curlflags.cookiejar);
}
break;
case CURLOPT_NETRC: case CURLOPT_NETRC_FILE:
if(state->auth.curlflags.netrc) {
CHECK(state, CURLOPT_NETRC, (OPTARG)CURL_NETRC_REQUIRED);
CHECK(state, CURLOPT_NETRC_FILE, state->auth.curlflags.netrc);
}
break;
case CURLOPT_VERBOSE:
if(state->auth.curlflags.verbose)
CHECK(state, CURLOPT_VERBOSE, (OPTARG)1L);
break;
case CURLOPT_TIMEOUT:
if(state->auth.curlflags.timeout)
CHECK(state, CURLOPT_TIMEOUT, (OPTARG)((long)state->auth.curlflags.timeout));
break;
case CURLOPT_USERAGENT:
if(state->auth.curlflags.useragent)
CHECK(state, CURLOPT_USERAGENT, state->auth.curlflags.useragent);
break;
case CURLOPT_FOLLOWLOCATION:
CHECK(state, CURLOPT_FOLLOWLOCATION, (OPTARG)1L);
break;
case CURLOPT_MAXREDIRS:
CHECK(state, CURLOPT_MAXREDIRS, (OPTARG)OC_MAX_REDIRECTS);
break;
case CURLOPT_ERRORBUFFER:
CHECK(state, CURLOPT_ERRORBUFFER, state->error.curlerrorbuf);
break;
case CURLOPT_ENCODING:
#ifdef CURLOPT_ENCODING
if(state->auth.curlflags.compress) {
CHECK(state, CURLOPT_ENCODING,"deflate, gzip");
}
#endif
break;
case CURLOPT_PROXY:
if(state->auth.proxy.host != NULL) {
CHECK(state, CURLOPT_PROXY, state->auth.proxy.host);
CHECK(state, CURLOPT_PROXYPORT, (OPTARG)(long)state->auth.proxy.port);
if(state->auth.proxy.user != NULL && state->auth.proxy.pwd != NULL) {
CHECK(state, CURLOPT_PROXYUSERNAME, state->auth.proxy.user);
CHECK(state, CURLOPT_PROXYPASSWORD, state->auth.proxy.pwd);
#ifdef CURLOPT_PROXYAUTH
CHECK(state, CURLOPT_PROXYAUTH, (long)CURLAUTH_ANY);
#endif
}
}
break;
case CURLOPT_USE_SSL:
case CURLOPT_SSLCERT: case CURLOPT_SSLKEY:
case CURLOPT_SSL_VERIFYPEER: case CURLOPT_SSL_VERIFYHOST:
{
struct ssl* ssl = &state->auth.ssl;
CHECK(state, CURLOPT_SSL_VERIFYPEER, (OPTARG)(ssl->verifypeer?1L:0L));
CHECK(state, CURLOPT_SSL_VERIFYHOST, (OPTARG)(ssl->verifyhost?1L:0L));
if(ssl->certificate)
CHECK(state, CURLOPT_SSLCERT, ssl->certificate);
if(ssl->key)
CHECK(state, CURLOPT_SSLKEY, ssl->key);
if(ssl->keypasswd)
/* libcurl prior to 7.16.4 used 'CURLOPT_SSLKEYPASSWD' */
CHECK(state, CURLOPT_KEYPASSWD, ssl->keypasswd);
if(ssl->cainfo)
CHECK(state, CURLOPT_CAINFO, ssl->cainfo);
if(ssl->capath)
CHECK(state, CURLOPT_CAPATH, ssl->capath);
}
break;
#ifdef HAVE_CURLOPT_BUFFERSIZE
case CURLOPT_BUFFERSIZE:
CHECK(state, CURLOPT_BUFFERSIZE, (OPTARG)state->curlbuffersize);
break;
#endif
#ifdef HAVE_CURLOPT_KEEPALIVE
case CURLOPT_TCP_KEEPALIVE:
if(state->curlkeepalive.active != 0)
CHECK(state, CURLOPT_TCP_KEEPALIVE, (OPTARG)1L);
if(state->curlkeepalive.idle > 0)
CHECK(state, CURLOPT_TCP_KEEPIDLE, (OPTARG)state->curlkeepalive.idle);
if(state->curlkeepalive.interval > 0)
CHECK(state, CURLOPT_TCP_KEEPINTVL, (OPTARG)state->curlkeepalive.interval);
break;
#endif
default:
nclog(NCLOGWARN,"Attempt to update unexpected curl flag: %d",flag);
break;
}
done:
return stat;
}
/* Set various general curl flags per fetch */
OCerror
ocset_flags_perfetch(OCstate* state)
{
OCerror stat = OC_NOERR;
/* currently none */
return stat;
}
/* Set various general curl flags per link */
OCerror
ocset_flags_perlink(OCstate* state)
{
OCerror stat = OC_NOERR;
/* Following are always set */
if(stat == OC_NOERR) stat = ocset_curlflag(state,CURLOPT_ENCODING);
if(stat == OC_NOERR) stat = ocset_curlflag(state,CURLOPT_NETRC);
if(stat == OC_NOERR) stat = ocset_curlflag(state,CURLOPT_VERBOSE);
if(stat == OC_NOERR) stat = ocset_curlflag(state,CURLOPT_TIMEOUT);
if(stat == OC_NOERR) stat = ocset_curlflag(state,CURLOPT_USERAGENT);
if(stat == OC_NOERR) stat = ocset_curlflag(state,CURLOPT_COOKIEJAR);
if(stat == OC_NOERR) stat = ocset_curlflag(state,CURLOPT_USERPWD);
if(stat == OC_NOERR) stat = ocset_curlflag(state,CURLOPT_PROXY);
if(stat == OC_NOERR) stat = ocset_curlflag(state,CURLOPT_USE_SSL);
if(stat == OC_NOERR) stat = ocset_curlflag(state, CURLOPT_FOLLOWLOCATION);
if(stat == OC_NOERR) stat = ocset_curlflag(state, CURLOPT_MAXREDIRS);
if(stat == OC_NOERR) stat = ocset_curlflag(state, CURLOPT_ERRORBUFFER);
#ifdef HAVE_CURLOPT_BUFFERSIZE
/* Optional */
if(stat == OC_NOERR && state->curlbuffersize > 0)
stat = ocset_curlflag(state, CURLOPT_BUFFERSIZE);
#endif
#ifdef HAVE_CURLOPT_KEEPALIVE
if(stat == NC_NOERR && state->curlkeepalive.active != 0)
stat = ocset_curlflag(state, CURLOPT_TCP_KEEPALIVE);
#endif
return stat;
}
void
oc_curl_debug(OCstate* state)
{
state->auth.curlflags.verbose = 1;
ocset_curlflag(state,CURLOPT_VERBOSE);
ocset_curlflag(state,CURLOPT_ERRORBUFFER);
}
/* Misc. */
int
ocrc_netrc_required(OCstate* state)
{
char* netrcfile = NC_rclookup(NETRCFILETAG,state->uri->uri);
return (netrcfile != NULL || state->auth.curlflags.netrc != NULL ? 0 : 1);
}
void
oc_curl_printerror(OCstate* state)
{
fprintf(stderr,"curl error details: %s\n",state->curlerror);
}
/* See if http: protocol is supported */
void
oc_curl_protocols(OCstate* state)
{
const char* const* proto; /*weird*/
curl_version_info_data* curldata;
curldata = curl_version_info(CURLVERSION_NOW);
for(proto=curldata->protocols;*proto;proto++) {
if(strcmp("http",*proto)==0)
state->auth.curlflags.proto_https=1;
}
}
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