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c5fe913d54
netcdf-c/oc2/occurlfunctions.c
dmh c5fe913d54 re: https://github.com/Unidata/netcdf-c/issues/117 
It appears the problem is that synth9 was erroneously
included in testing. It involves a nested sequence which
is not translatable. Not sure why it was still there,
but fix is to suppress the test.
2015-07-05 19:26:01 -06:00

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/* Copyright 2009, UCAR/Unidata and OPeNDAP, Inc.
See the COPYRIGHT file for more information. */
#include "config.h"
#include "ocinternal.h"
#include "ocdebug.h"
#include "occurlfunctions.h"
#define OC_MAX_REDIRECTS 20L
/* Mnemonic */
#define OPTARG void*
/* Condition on libcurl version */
/* Set up an alias as needed */
#ifndef HAVE_CURLOPT_KEYPASSWD
#define CURLOPT_KEYPASSWD CURLOPT_SSLKEYPASSWD
#endif
#define NETRCFILETAG "HTTP.NETRC"
#define CHECK(state,flag,value) {if(check(state,flag,(void*)value) != OC_NOERR) {goto done;}}
/* forward */
static OCerror oc_set_curl_options(OCstate* state);
static void* cvt(char* value, enum OCCURLFLAGTYPE type);
static OCerror
check(OCstate* state, int flag, void* value)
{
OCerror stat = ocset_curlopt(state,flag,value);
#ifdef OCDEBUG
long l = (long)value;
const char* name = occurlflagbyflag(flag)->name;
if(l <= 1000) {
OCDBG2("%s=%ld",name,l);
} else {
char show[65];
char* s = (char*)value;
strncpy(show,s,64);
show[64] = '\0';
OCDBG2("%s=%s",name,show);
}
#endif
return stat;
}
#if 0
static void
showopt(int flag, void* value)
{
struct OCCURLFLAG* f = occurlflagbyflag(flag);
if(f == NULL) {
OCDBG1("Unsupported flag: %d",flag);
} else switch (f->type) {
case CF_LONG:
OCDBG2("%s=%ld",f->name,(long)value);
break;
case CF_STRING: {
char show[65];
char* s = (char*)value;
strncpy(show,s,64);
show[64] = '\0';
OCDBG2("%s=%s",f->name,show);
} break;
case CF_UNKNOWN: case CF_OTHER:
OCDBG1("%s=<something>",f->name);
break;
}
}
#endif
/*
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:
if(state->creds.userpwd != NULL) {
CHECK(state, CURLOPT_USERPWD, state->creds.userpwd);
CHECK(state, CURLOPT_HTTPAUTH, (OPTARG)CURLAUTH_ANY);
}
break;
case CURLOPT_COOKIEJAR: case CURLOPT_COOKIEFILE:
if(state->curlflags.cookiejar) {
/* Assume we will read and write cookies to same place */
CHECK(state, CURLOPT_COOKIEJAR, state->curlflags.cookiejar);
CHECK(state, CURLOPT_COOKIEFILE, state->curlflags.cookiejar);
}
break;
case CURLOPT_NETRC: case CURLOPT_NETRC_FILE:
if(state->curlflags.netrc) {
CHECK(state, CURLOPT_NETRC, (OPTARG)CURL_NETRC_REQUIRED);
CHECK(state, CURLOPT_NETRC_FILE, state->curlflags.netrc);
}
break;
case CURLOPT_VERBOSE:
if(state->curlflags.verbose)
CHECK(state, CURLOPT_VERBOSE, (OPTARG)1L);
break;
case CURLOPT_TIMEOUT:
if(state->curlflags.timeout)
CHECK(state, CURLOPT_TIMEOUT, (OPTARG)((long)state->curlflags.timeout));
break;
case CURLOPT_USERAGENT:
if(state->curlflags.useragent)
CHECK(state, CURLOPT_USERAGENT, state->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->curlflags.compress) {
CHECK(state, CURLOPT_ENCODING,"deflate, gzip");
}
#endif
break;
case CURLOPT_PROXY:
if(state->proxy.host != NULL) {
CHECK(state, CURLOPT_PROXY, state->proxy.host);
CHECK(state, CURLOPT_PROXYPORT, (OPTARG)(long)state->proxy.port);
if(state->proxy.userpwd) {
CHECK(state, CURLOPT_PROXYUSERPWD, state->proxy.userpwd);
#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 OCSSL* ssl = &state->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;
default: {
struct OCCURLFLAG* f = occurlflagbyflag(flag);
if(f != NULL)
oclog(OCLOGWARN,"Attempt to update unexpected curl flag: %s",
f->name);
} 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;
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)
return stat;
/* Following are always set */
ocset_curlflag(state, CURLOPT_FOLLOWLOCATION);
ocset_curlflag(state, CURLOPT_MAXREDIRS);
ocset_curlflag(state, CURLOPT_ERRORBUFFER);
/* Set the CURL. options */
stat = oc_set_curl_options(state);
return stat;
}
/**
Directly set any options starting with 'CURL.'
*/
static OCerror
oc_set_curl_options(OCstate* state)
{
OCerror stat = OC_NOERR;
struct OCTriplestore* store = NULL;
struct OCTriple* triple = NULL;
int i;
char* hostport = NULL;
struct OCCURLFLAG* ocflag = NULL;
hostport = occombinehostport(state->uri);
if(hostport == NULL) {
hostport = (char*)malloc(sizeof(char)*1);
*hostport = '\0';
}
store = &ocglobalstate.rc.daprc;
triple = store->triples;
/* Assume that the triple store has been properly sorted */
for(i=0;i<store->ntriples;i++,triple++) {
size_t hostlen = strlen(triple->host);
const char* flagname;
if(ocstrncmp("CURL.",triple->key,5) != 0) continue; /* not a curl flag */
/* do hostport prefix comparison */
if(hostlen > 0) {
int t = ocstrncmp(hostport,triple->host,hostlen);
if(t != 0) continue;
}
flagname = triple->key+5; /* 5 == strlen("CURL."); */
ocflag = occurlflagbyname(flagname);
if(ocflag == NULL) {stat = OC_ECURL; goto done;}
stat = ocset_curlopt(state,ocflag->flag,cvt(triple->value,ocflag->type));
}
done:
if(hostport && strlen(hostport) > 0) free(hostport);
return stat;
}
static void*
cvt(char* value, enum OCCURLFLAGTYPE type)
{
switch (type) {
case CF_LONG: {
/* Try to convert to long value */
const char* p = value;
char* q = NULL;
long longvalue = strtol(p,&q,10);
if(*q != '\0')
return NULL;
return (void*)longvalue;
}
case CF_STRING:
return (void*)value;
case CF_UNKNOWN: case CF_OTHER:
return (void*)value;
}
return NULL;
}
void
oc_curl_debug(OCstate* state)
{
state->curlflags.verbose = 1;
ocset_curlflag(state,CURLOPT_VERBOSE);
ocset_curlflag(state,CURLOPT_ERRORBUFFER);
}
/* Misc. */
int
ocrc_netrc_required(OCstate* state)
{
char* netrcfile = ocrc_lookup(NETRCFILETAG,state->uri->uri);
return (netrcfile != NULL || state->curlflags.netrc != NULL ? 0 : 1);
}
void
oc_curl_printerror(OCstate* state)
{
fprintf(stderr,"curl error details: %s\n",state->curlerror);
}
/* Determine if this version of curl supports
"file://..." &/or "https://..." urls.
*/
void
oc_curl_protocols(struct OCGLOBALSTATE* 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("file",*proto)==0) {state->curl.proto_file=1;}
if(strcmp("http",*proto)==0) {state->curl.proto_https=1;}
}
if(ocdebug > 0) {
oclog(OCLOGNOTE,"Curl file:// support = %d",state->curl.proto_file);
oclog(OCLOGNOTE,"Curl https:// support = %d",state->curl.proto_https);
}
}
/*
"Inverse" of ocset_curlflag;
Given a flag and value, it updates state.
Update a specific flag from state->curlflags.
*/
OCerror
ocset_curlstate(OCstate* state, int flag, void* value)
{
OCerror stat = OC_NOERR;
switch (flag) {
case CURLOPT_USERPWD:
if(state->creds.userpwd != NULL) free(state->creds.userpwd);
state->creds.userpwd = strdup((char*)value);
break;
case CURLOPT_COOKIEJAR: case CURLOPT_COOKIEFILE:
if(state->curlflags.cookiejar != NULL) free(state->curlflags.cookiejar);
state->curlflags.cookiejar = strdup((char*)value);
break;
case CURLOPT_NETRC: case CURLOPT_NETRC_FILE:
if(state->curlflags.netrc != NULL) free(state->curlflags.netrc);
state->curlflags.netrc = strdup((char*)value);
break;
case CURLOPT_VERBOSE:
state->curlflags.verbose = (long)value;
break;
case CURLOPT_TIMEOUT:
state->curlflags.timeout = (long)value;
break;
case CURLOPT_USERAGENT:
if(state->curlflags.useragent != NULL) free(state->curlflags.useragent);
state->curlflags.useragent = strdup((char*)value);
break;
case CURLOPT_FOLLOWLOCATION:
/* no need to store; will always be set */
break;
case CURLOPT_MAXREDIRS:
/* no need to store; will always be set */
break;
case CURLOPT_ERRORBUFFER:
/* no need to store; will always be set */
break;
case CURLOPT_ENCODING:
/* no need to store; will always be set to fixed value */
break;
case CURLOPT_PROXY:
/* We assume that the value is the proxy url */
if(state->proxy.host != NULL) free(state->proxy.host);
if(state->proxy.userpwd != NULL) free(state->proxy.userpwd);
state->proxy.host = NULL;
state->proxy.userpwd = NULL;
if(!ocparseproxy(state,(char*)value))
{stat = OC_EINVAL; goto done;}
break;
case CURLOPT_SSLCERT:
if(state->ssl.certificate != NULL) free(state->ssl.certificate);
state->ssl.certificate = strdup((char*)value);
break;
case CURLOPT_SSLKEY:
if(state->ssl.key != NULL) free(state->ssl.key);
state->ssl.key = strdup((char*)value);
break;
case CURLOPT_KEYPASSWD:
if(state->ssl.keypasswd!= NULL) free(state->ssl.keypasswd);
state->ssl.keypasswd = strdup((char*)value);
break;
case CURLOPT_SSL_VERIFYPEER:
state->ssl.verifypeer = (long)value;
break;
case CURLOPT_SSL_VERIFYHOST:
state->ssl.verifyhost = (long)value;
break;
case CURLOPT_CAINFO:
if(state->ssl.cainfo != NULL) free(state->ssl.cainfo);
state->ssl.cainfo = strdup((char*)value);
break;
case CURLOPT_CAPATH:
if(state->ssl.capath != NULL) free(state->ssl.capath);
state->ssl.capath = strdup((char*)value);
break;
default: {
struct OCCURLFLAG* f = occurlflagbyflag(flag);
if(f != NULL)
oclog(OCLOGWARN,"Attempt to add unexpected curl flag to state: %s",
f->name);
} break;
}
done:
return stat;
}
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