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Initial take at NTLM authentication. It doesn't really work at this point

but the infrastructure is there.
This commit is contained in:
Daniel Stenberg 2003-06-11 13:38:55 +00:00
parent 4c80e103a0
commit 73c5f24fa4
8 changed files with 626 additions and 4 deletions

View File

@ -68,7 +68,8 @@ strequal.h easy.c security.h security.c krb4.c krb4.h memdebug.c \
memdebug.h inet_ntoa_r.h http_chunks.c http_chunks.h strtok.c strtok.h \
connect.c connect.h llist.c llist.h hash.c hash.h multi.c \
content_encoding.c content_encoding.h share.c share.h http_digest.c \
md5.c md5.h http_digest.h http_negotiate.c http_negotiate.h
md5.c md5.h http_digest.h http_negotiate.c http_negotiate.h \
http_ntlm.c http_ntlm.h
noinst_HEADERS = setup.h transfer.h

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@ -232,13 +232,17 @@ int main(int argc, char **argv, char **envp)
int base64Len;
unsigned char *data;
int dataLen;
int i;
base64 = (char *)suck(&base64Len);
data = (unsigned char *)malloc(base64Len * 3/4 + 8);
dataLen = Curl_base64_decode(base64, data);
fprintf(stderr, "%d\n", dataLen);
fwrite(data,1,dataLen,stdout);
for(i=0; i < dataLen; i++)
printf("%02x ", data[i]);
puts("");
free(base64); free(data);
return 0;

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@ -90,6 +90,7 @@
#include "strequal.h"
#include "ssluse.h"
#include "http_digest.h"
#include "http_ntlm.h"
#define _MPRINTF_REPLACE /* use our functions only */
#include <curl/mprintf.h>
@ -696,7 +697,12 @@ CURLcode Curl_http(struct connectdata *conn)
return result;
} else
#endif
if(data->state.digest.nonce) {
if(data->state.ntlm.state) {
result = Curl_output_ntlm(conn);
if(result)
return result;
}
else if(data->state.digest.nonce) {
result = Curl_output_digest(conn,
(unsigned char *)request,
(unsigned char *)ppath);

501
lib/http_ntlm.c Normal file
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@ -0,0 +1,501 @@
/***************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) 1998 - 2003, Daniel Stenberg, <daniel@haxx.se>, et al.
*
* This software is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
* are also available at http://curl.haxx.se/docs/copyright.html.
*
* You may opt to use, copy, modify, merge, publish, distribute and/or sell
* copies of the Software, and permit persons to whom the Software is
* furnished to do so, under the terms of the COPYING file.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
* $Id$
***************************************************************************/
#include "setup.h"
/* All NTLM details here: http://www.innovation.ch/java/ntlm.html */
#ifndef CURL_DISABLE_HTTP
#ifdef USE_SSLEAY
/* We need OpenSSL for the crypto lib to provide us with MD4 and DES */
/* -- WIN32 approved -- */
#include <stdio.h>
#include <string.h>
#include <stdarg.h>
#include <stdlib.h>
#include <ctype.h>
#include "urldata.h"
#include "sendf.h"
#include "strequal.h"
#include "base64.h"
#include "http_ntlm.h"
#define _MPRINTF_REPLACE /* use our functions only */
#include <curl/mprintf.h>
#include <openssl/des.h>
#include <openssl/md4.h>
/* The last #include file should be: */
#ifdef MALLOCDEBUG
#include "memdebug.h"
#endif
/*
The one and only master resource for NTLM "hacking":
====> http://www.innovation.ch/java/ntlm.html <====
Brought to the world by Ronald Tschalär.
*/
/* Test example header:
WWW-Authenticate: NTLM
*/
CURLntlm Curl_input_ntlm(struct connectdata *conn,
char *header) /* rest of the www-authenticate:
header */
{
struct SessionHandle *data=conn->data;
/* skip initial whitespaces */
while(*header && isspace((int)*header))
header++;
if(checkprefix("NTLM", header)) {
char buffer[256];
header += strlen("NTLM");
while(*header && isspace((int)*header))
header++;
if(*header) {
/* we got a type-2 message here */
/* My test-IE session reveived this type-2:
TlRMTVNTUAACAAAAAgACADAAAAAGgoEAc51AYVDgyNcAAAAAAAAAAG4AbgA\
yAAAAQ0MCAAQAQwBDAAEAEgBFAEwASQBTAEEAQgBFAFQASAAEABgAYwBjAC4\
AaQBjAGUAZABlAHYALgBuAHUAAwAsAGUAbABpAHMAYQBiAGUAdABoAC4AYwB\
jAC4AaQBjAGUAZABlAHYALgBuAHUAAAAAAA==
which translates to this:
4e 54 4c 4d 53 53 50 00 02 00 00 00 02 00 02 00 30 00 00 00 06 82 81 00
73 9d 40 61 50 e0 c8 d7 00 00 00 00 00 00 00 00 6e 00 6e 00 32 00 00 00
43 43 02 00 04 00 43 00 43 00 01 00 12 00 45 00 4c 00 49 00 53 00 41 00
42 00 45 00 54 00 48 00 04 00 18 00 63 00 63 00 2e 00 69 00 63 00 65 00
64 00 65 00 76 00 2e 00 6e 00 75 00 03 00 2c 00 65 00 6c 00 69 00 73 00
61 00 62 00 65 00 74 00 68 00 2e 00 63 00 63 00 2e 00 69 00 63 00 65 00
64 00 65 00 76 00 2e 00 6e 00 75 00 00 00 00 00
*/
int size = Curl_base64_decode(header, buffer);
data->state.ntlm.state = NTLMSTATE_TYPE2; /* we got a type-2 */
if(size == 48)
/* the nonce of interest is index [24 .. 31], 8 bytes */
memcpy(data->state.ntlm.nonce, &buffer[24], 8);
}
else {
data->state.ntlm.state = NTLMSTATE_TYPE1; /* we should sent away a
type-1 */
}
}
return CURLNTLM_FINE;
}
/*
* Turns a 56 bit key into the 64 bit, odd parity key and sets the key. The
* key schedule ks is also set.
*/
static void setup_des_key(unsigned char *key_56,
DES_key_schedule *ks)
{
DES_cblock key;
key[0] = key_56[0];
key[1] = ((key_56[0] << 7) & 0xFF) | (key_56[1] >> 1);
key[2] = ((key_56[1] << 6) & 0xFF) | (key_56[2] >> 2);
key[3] = ((key_56[2] << 5) & 0xFF) | (key_56[3] >> 3);
key[4] = ((key_56[3] << 4) & 0xFF) | (key_56[4] >> 4);
key[5] = ((key_56[4] << 3) & 0xFF) | (key_56[5] >> 5);
key[6] = ((key_56[5] << 2) & 0xFF) | (key_56[6] >> 6);
key[7] = (key_56[6] << 1) & 0xFF;
DES_set_odd_parity(&key);
DES_set_key(&key, ks);
}
/*
* takes a 21 byte array and treats it as 3 56-bit DES keys. The
* 8 byte plaintext is encrypted with each key and the resulting 24
* bytes are stored in the results array.
*/
static void calc_resp(unsigned char *keys,
unsigned char *plaintext,
unsigned char *results)
{
des_key_schedule ks;
setup_des_key(keys, &ks);
DES_ecb_encrypt((DES_cblock*) plaintext, (DES_cblock*) results, &ks,
DES_ENCRYPT);
setup_des_key(keys+7, &ks);
DES_ecb_encrypt((DES_cblock*) plaintext, (DES_cblock*) (results+8), &ks,
DES_ENCRYPT);
setup_des_key(keys+14, &ks);
DES_ecb_encrypt((DES_cblock*) plaintext, (DES_cblock*) (results+16), &ks,
DES_ENCRYPT);
}
static void mkhash(char *password,
unsigned char *nonce, /* 8 bytes */
unsigned char *lmresp, /* must fit 0x18 bytes */
unsigned char *ntresp) /* must fit 0x18 bytes */
{
/* setup LanManager password */
unsigned char lmbuffer[0x18];
unsigned char ntbuffer[0x18];
unsigned char lm_pw[14];
int len = strlen(password);
unsigned char magic[] = { 0x4B, 0x47, 0x53, 0x21, 0x40, 0x23, 0x24, 0x25 };
int i;
if (len > 14)
len = 14;
for (i=0; i<len; i++)
lm_pw[i] = toupper(password[i]);
for (; i<14; i++)
lm_pw[i] = 0;
/* create LanManager hashed password */
{
DES_key_schedule ks;
setup_des_key(lm_pw, &ks);
DES_ecb_encrypt((DES_cblock *)magic, (DES_cblock *)lmbuffer, &ks,
DES_ENCRYPT);
setup_des_key(lm_pw+7, &ks);
DES_ecb_encrypt((DES_cblock *)magic, (DES_cblock *)lmbuffer+8, &ks,
DES_ENCRYPT);
memset(lmbuffer+16, 0, 5);
}
{
/* create NT hashed password */
int len = strlen(password);
unsigned char nt_pw[256];
MD4_CTX MD4;
for (i=0; i<len; i++) {
nt_pw[2*i] = password[i];
nt_pw[2*i+1] = 0;
}
MD4_Init(&MD4);
MD4_Update(&MD4, nt_pw, 2*len);
MD4_Final(nt_pw, &MD4);
memset(ntbuffer+16, 0, 5);
}
/* create responses */
calc_resp(lmbuffer, nonce, lmresp);
calc_resp(ntbuffer, nonce, ntresp);
}
/* convert an ascii string to upper case unicode, the destination buffer
must fit twice the source size */
static void ascii_to_unicode(unsigned char *destunicode,
unsigned char *sourceascii,
bool conv)
{
while (*sourceascii) {
destunicode[0] = conv?toupper(*sourceascii):*sourceascii;
destunicode[1] = '\0';
destunicode += 2;
sourceascii++;
}
}
#define SHORTPAIR(x) ((x) & 0xff), ((x) >> 8)
/* this is for creating ntlm header output */
CURLcode Curl_output_ntlm(struct connectdata *conn)
{
struct SessionHandle *data=conn->data;
const char *domain="HEMMA";
const char *host="LILLASYSTER";
int domlen=strlen(domain);
int hostlen = strlen(host);
int hostoff; /* host name offset */
int domoff; /* domain name offset */
int size;
char *base64=NULL;
unsigned char ntlm[256]; /* enough, unless the host/domain is very long */
if(NTLMSTATE_TYPE1 == data->state.ntlm.state) {
hostoff = 32;
domoff = hostoff + hostlen;
/* IE used this in the initial dump:
Authorization: NTLM \
TlRMTVNTUAABAAAABoIAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMAAAAAAAAAAwAAAA\r\n
This translates into:
4e 54 4c 4d 53 53 50 00 01 00 00 00 06 82 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 30 00 00 00 00 00 00 00 30 00 00 00
Which isn't following the web spec. This uses 0x8206 instead of 0xb203
and sends a longer chunk of data than we do! Interestingly, there's no
host or domain either.
*/
snprintf((char *)ntlm, sizeof(ntlm), "NTLMSSP%c"
"\x01" /* type 1 */
"%c%c%c"
"\x03\xb2"
"%c%c"
"%c%c" /* domain length */
"%c%c" /* domain length */
"%c%c" /* domain name offset */
"%c%c" /* host length */
"%c%c" /* host length */
"%c%c" /* host name offset */
"%c%c"
"%s" /* host name */
"%s", /* domain string */
0,0,0,0,0,0,
SHORTPAIR(domlen),
SHORTPAIR(domlen),
SHORTPAIR(domoff),
SHORTPAIR(hostlen),
SHORTPAIR(hostlen),
SHORTPAIR(hostoff),
0,0,
host, domain);
/* initial packet length */
size = 8 + 1 + 3 + 18 + hostlen + domlen;
#if 0
#define CHUNK "\x4e\x54\x4c\x4d\x53\x53\x50\x00\x01\x00\x00\x00\x06\x82\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x30\x00\x00\x00\x00\x00\x00\x00\x30\x00\x00\x00"
memcpy(ntlm, CHUNK, sizeof(CHUNK)-1);
size = sizeof(CHUNK)-1;
#endif
/* now keeper of the base64 encoded package size */
size = Curl_base64_encode(ntlm, size, &base64);
if(size >0 ) {
conn->allocptr.userpwd = aprintf("Authorization: NTLM %s\r\n",
base64);
free(base64);
}
else
return CURLE_OUT_OF_MEMORY; /* FIX TODO */
}
else {
/* We are not in the first state, create a type-3 message */
/*
My test-IE session sent this type-3:
TlRMTVNTUAADAAAAGAAYAEoAAAAAAAAAYgAAAAUABQA0AAAABgAGADk\
AAAALAAsAPwAAAEhFTU1BZGFuaWVsTElMTEFTWVNURVJPVPJELoebUg\
4SvW0ed2QmKu0SjX4qNrI=
Which translates to:
4e 54 4c 4d 53 53 50 00 03 00 00 00 18 00 18 00 4a 00 00 00 00 00 00 00
62 00 00 00 05 00 05 00 34 00 00 00 06 00 06 00 39 00 00 00 0b 00 0b 00
3f 00 00 00 48 45 4d 4d 41 64 61 6e 69 65 6c 4c 49 4c 4c 41 53 59 53 54
45 52 4f 54 f2 44 2e 87 9b 52 0e 12 bd 6d 1e 77 64 26 2a ed 12 8d 7e 2a
36 b2
Note how the domain + username + hostname ARE NOT unicoded in any way.
Domain and hostname are uppercase, while username are case sensitive.
We sent (badly):
4e 54 4c 4d 53 53 50 00 03 00 00 00 18 00 18 00 56 00 00 00 00 00 00 00
6e 00 00 00 05 00 05 00 40 00 00 00 06 00 06 00 45 00 00 00 0b 00 0b 00
4b 00 00 00 00 00 00 00 6c 00 00 00 01 82 48 45 4d 4d 41 64 61 6e 69 65
6c 4c 49 4c 4c 41 53 59 53 54 45 52 86 99 4a 4f 1a 54 93 85 f9 a4 85 d7
ed 14 17 31 8c a6 4d e9 c1 b1 23 a7
*/
int lmrespoff;
int ntrespoff;
int useroff;
unsigned char lmresp[0x18+1];
unsigned char ntresp[0x18+1];
int userlen = strlen(data->state.user);
mkhash(data->state.passwd, &data->state.ntlm.nonce[0], lmresp, ntresp);
/* these are going unicode */
domlen *= 2;
userlen *= 2;
hostlen *= 2;
domoff = 64; /* always */
useroff = domoff + domlen;
hostoff = useroff + userlen;
lmrespoff = hostoff + hostlen;
ntrespoff = lmrespoff + 0x18;
/* Create the big type-3 message binary blob */
size = snprintf((char *)ntlm, sizeof(ntlm),
"NTLMSSP%c"
"\x03" /* type 3 */
"%c%c%c" /* 3 zeroes */
"%c%c%c%c" /* LanManager length twice */
"%c%c" /* LanManager offset */
"%c%c" /* 2 zeroes */
"%c%c%c%c" /* NT-response length twice */
"%c%c" /* NT-response offset */
"%c%c" /* 2 zeroes */
"%c%c" /* domain length */
"%c%c" /* domain length */
"%c%c" /* domain name offset */
"%c%c" /* 2 zeroes */
"%c%c" /* user length */
"%c%c" /* user length */
"%c%c" /* user offset */
"%c%c" /* 2 zeroes */
"%c%c" /* host length */
"%c%c" /* host length */
"%c%c" /* host offset */
"%c%c%c%c%c%c" /* 6 zeroes */
"\xff\xff" /* message length */
"%c%c" /* 2 zeroes */
"\x01\x82" /* flags */
"%c%c" /* 2 zeroes */
/* domain string */
/* user string */
/* host string */
/* LanManager response */
/* NT response */
,
0,
0,0,0,
SHORTPAIR(0x18), /* LanManager response length, twice */
SHORTPAIR(0x18),
SHORTPAIR(lmrespoff),
0x0, 0x0,
SHORTPAIR(0x18), /* NT-response length, twice */
SHORTPAIR(0x18),
SHORTPAIR(ntrespoff),
0x0, 0x0,
SHORTPAIR(domlen),
SHORTPAIR(domlen),
SHORTPAIR(domoff),
0x0, 0x0,
SHORTPAIR(userlen),
SHORTPAIR(userlen),
SHORTPAIR(useroff),
0x0, 0x0,
SHORTPAIR(hostlen),
SHORTPAIR(hostlen),
SHORTPAIR(hostoff),
0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
0x0, 0x0,
0x0, 0x0);
/* size is now 64 */
#if 1
ascii_to_unicode(&ntlm[size], (unsigned char *)domain, TRUE);
size += domlen;
ascii_to_unicode(&ntlm[size], (unsigned char *)data->state.user, FALSE);
size += userlen;
ascii_to_unicode(&ntlm[size], (unsigned char *)host, TRUE);
size += hostlen;
#else
strcpy(&ntlm[size], (unsigned char *)domain);
size += domlen;
strcpy(&ntlm[size], (unsigned char *)data->state.user);
size += userlen;
strcpy(&ntlm[size], (unsigned char *)host);
size += hostlen;
#endif
/* we append the binary hashes to the end of the blob */
if(size < ((int)sizeof(ntlm) - 0x18)) {
memcpy(&ntlm[size], lmresp, 0x18);
size += 0x18;
}
#ifdef USE_NT
if(size < ((int)sizeof(ntlm) - 0x18)) {
memcpy(&ntlm[size+0x18], ntresp, 0x18);
size += 0x18*2;
}
#endif
ntlm[56] = size & 0xff;
ntlm[57] = size >> 8;
/* convert the binary blob into base64 */
size = Curl_base64_encode(ntlm, size, &base64);
if(size >0 ) {
conn->allocptr.userpwd = aprintf("Authorization: NTLM %s\r\n",
base64);
free(base64);
}
else
return CURLE_OUT_OF_MEMORY; /* FIX TODO */
}
return CURLE_OK;
}
#endif /* USE_SSLEAY */
#endif /* !CURL_DISABLE_HTTP */

67
lib/http_ntlm.h Normal file
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@ -0,0 +1,67 @@
#ifndef __HTTP_NTLM_H
#define __HTTP_NTLM_H
/***************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) 1998 - 2003, Daniel Stenberg, <daniel@haxx.se>, et al.
*
* This software is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
* are also available at http://curl.haxx.se/docs/copyright.html.
*
* You may opt to use, copy, modify, merge, publish, distribute and/or sell
* copies of the Software, and permit persons to whom the Software is
* furnished to do so, under the terms of the COPYING file.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
* $Id$
***************************************************************************/
typedef enum {
CURLNTLM_NONE, /* not a ntlm */
CURLNTLM_BAD, /* an ntlm, but one we don't like */
CURLNTLM_FIRST, /* the first 401-reply we got with NTLM */
CURLNTLM_FINE, /* an ntlm we act on */
CURLNTLM_LAST /* last entry in this enum, don't use */
} CURLntlm;
/* this is for ntlm header input */
CURLntlm Curl_input_ntlm(struct connectdata *conn, char *header);
/* this is for creating ntlm header output */
CURLcode Curl_output_ntlm(struct connectdata *conn);
void Curl_ntlm_cleanup(struct SessionHandle *data);
/* type-1 octet-stream, sent in the first NTLM-authenticated request
byte protocol[8]; 'N', 'T', 'L', 'M', 'S', 'S', 'P', '\0'
byte type; 0x01
byte zero[3];
short flags; 0xb203
byte zero[2];
short dom_len; domain string length
short dom_len; domain string length
short dom_off; domain string offset
byte zero[2];
short host_len; host string length
short host_len; host string length
short host_off; host string offset (always 0x20)
byte zero[2];
byte host[*]; host string (ASCII)
byte dom[*]; domain string (ASCII)
*/
#endif

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@ -96,6 +96,7 @@
#include "getinfo.h"
#include "ssluse.h"
#include "http_digest.h"
#include "http_ntlm.h"
#ifdef GSSAPI
#include "http_negotiate.h"
#endif
@ -736,6 +737,17 @@ CURLcode Curl_readwrite(struct connectdata *conn,
conn->newurl = strdup(data->change.url);
}
#endif
else if(Curl_compareheader(k->p,
"WWW-Authenticate:", "NTLM") &&
(401 == k->httpcode) &&
data->set.httpntlm /* NTLM authentication is
activated */) {
CURLntlm ntlm;
ntlm = Curl_input_ntlm(conn,
k->p+strlen("WWW-Authenticate:"));
conn->newurl = strdup(data->change.url); /* clone string */
}
else if(checkprefix("WWW-Authenticate:", k->p) &&
(401 == k->httpcode) &&
data->set.httpdigest /* Digest authentication is

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@ -855,17 +855,32 @@ CURLcode Curl_setopt(struct SessionHandle *data, CURLoption option, ...)
/* default */
data->set.httpdigest = FALSE;
data->set.httpnegotiate = FALSE;
data->set.httpntlm = FALSE;
break;
case CURLHTTP_DIGEST:
/* Enable HTTP Digest authentication */
data->set.httpdigest = TRUE;
data->set.httpnegotiate = FALSE;
data->set.httpntlm = FALSE;
break;
case CURLHTTP_NTLM:
/* Enable HTTP NTLM authentication */
#ifdef USE_SSLEAY
/* We can only support NTLM if OpenSSL is present, as we need their
crypto package for it */
data->set.httpdigest = FALSE;
data->set.httpnegotiate = FALSE;
data->set.httpntlm = TRUE;
break;
#else
/* fall-through */
#endif
case CURLHTTP_NEGOTIATE:
#ifdef GSSAPI
/* Enable HTTP Negotaiate authentication */
data->set.httpdigest = FALSE;
data->set.httpnegotiate = TRUE;
data->set.httpntlm = FALSE;
break;
#else
/* fall-through */

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@ -164,6 +164,20 @@ struct digestdata {
int algo;
};
typedef enum {
NTLMSTATE_NONE,
NTLMSTATE_TYPE1,
NTLMSTATE_TYPE2,
NTLMSTATE_TYPE3,
NTLMSTATE_LAST
} curlntlm;
/* Struct used for Digest challenge-response authentication */
struct ntlmdata {
curlntlm state;
unsigned char nonce[8];
};
#ifdef GSSAPI
struct negotiatedata {
OM_uint32 status;
@ -640,6 +654,7 @@ struct UrlState {
is always set TRUE when curl_easy_perform() is called. */
struct digestdata digest;
struct ntlmdata ntlm;
#ifdef GSSAPI
struct negotiatedata negotiate;
@ -688,8 +703,9 @@ struct UserDefined {
char *set_proxy; /* proxy to use */
long use_port; /* which port to use (when not using default) */
char *userpwd; /* <user:password>, if used */
bool httpdigest; /* if HTTP Digest is enabled */
bool httpdigest; /* if HTTP Digest authentication is enabled */
bool httpnegotiate; /* if HTTP Negotiate authentication is enabled */
bool httpntlm; /* if HTTP NTLM authentication is enabled */
char *set_range; /* range, if used. See README for detailed specification
on this syntax. */
long followlocation; /* as in HTTP Location: */