/*************************************************************************** * _ _ ____ _ * Project ___| | | | _ \| | * / __| | | | |_) | | * | (__| |_| | _ <| |___ * \___|\___/|_| \_\_____| * * Copyright (C) 1998 - 2021, Daniel Stenberg, , 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 https://curl.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. * ***************************************************************************/ #include "curl_setup.h" #if defined(USE_NTLM) && !defined(USE_WINDOWS_SSPI) /* * NTLM details: * * https://davenport.sourceforge.io/ntlm.html * https://www.innovation.ch/java/ntlm.html */ #define DEBUG_ME 0 #include "urldata.h" #include "non-ascii.h" #include "sendf.h" #include "curl_base64.h" #include "curl_ntlm_core.h" #include "curl_gethostname.h" #include "curl_multibyte.h" #include "curl_md5.h" #include "warnless.h" #include "rand.h" #include "vtls/vtls.h" /* SSL backend-specific #if branches in this file must be kept in the order documented in curl_ntlm_core. */ #if defined(NTLM_NEEDS_NSS_INIT) #include "vtls/nssg.h" /* for Curl_nss_force_init() */ #endif #define BUILDING_CURL_NTLM_MSGS_C #include "vauth/vauth.h" #include "vauth/ntlm.h" #include "curl_endian.h" #include "curl_printf.h" /* The last #include files should be: */ #include "curl_memory.h" #include "memdebug.h" /* "NTLMSSP" signature is always in ASCII regardless of the platform */ #define NTLMSSP_SIGNATURE "\x4e\x54\x4c\x4d\x53\x53\x50" #if DEBUG_ME # define DEBUG_OUT(x) x static void ntlm_print_flags(FILE *handle, unsigned long flags) { if(flags & NTLMFLAG_NEGOTIATE_UNICODE) fprintf(handle, "NTLMFLAG_NEGOTIATE_UNICODE "); if(flags & NTLMFLAG_NEGOTIATE_OEM) fprintf(handle, "NTLMFLAG_NEGOTIATE_OEM "); if(flags & NTLMFLAG_REQUEST_TARGET) fprintf(handle, "NTLMFLAG_REQUEST_TARGET "); if(flags & (1<<3)) fprintf(handle, "NTLMFLAG_UNKNOWN_3 "); if(flags & NTLMFLAG_NEGOTIATE_SIGN) fprintf(handle, "NTLMFLAG_NEGOTIATE_SIGN "); if(flags & NTLMFLAG_NEGOTIATE_SEAL) fprintf(handle, "NTLMFLAG_NEGOTIATE_SEAL "); if(flags & NTLMFLAG_NEGOTIATE_DATAGRAM_STYLE) fprintf(handle, "NTLMFLAG_NEGOTIATE_DATAGRAM_STYLE "); if(flags & NTLMFLAG_NEGOTIATE_LM_KEY) fprintf(handle, "NTLMFLAG_NEGOTIATE_LM_KEY "); if(flags & NTLMFLAG_NEGOTIATE_NETWARE) fprintf(handle, "NTLMFLAG_NEGOTIATE_NETWARE "); if(flags & NTLMFLAG_NEGOTIATE_NTLM_KEY) fprintf(handle, "NTLMFLAG_NEGOTIATE_NTLM_KEY "); if(flags & (1<<10)) fprintf(handle, "NTLMFLAG_UNKNOWN_10 "); if(flags & NTLMFLAG_NEGOTIATE_ANONYMOUS) fprintf(handle, "NTLMFLAG_NEGOTIATE_ANONYMOUS "); if(flags & NTLMFLAG_NEGOTIATE_DOMAIN_SUPPLIED) fprintf(handle, "NTLMFLAG_NEGOTIATE_DOMAIN_SUPPLIED "); if(flags & NTLMFLAG_NEGOTIATE_WORKSTATION_SUPPLIED) fprintf(handle, "NTLMFLAG_NEGOTIATE_WORKSTATION_SUPPLIED "); if(flags & NTLMFLAG_NEGOTIATE_LOCAL_CALL) fprintf(handle, "NTLMFLAG_NEGOTIATE_LOCAL_CALL "); if(flags & NTLMFLAG_NEGOTIATE_ALWAYS_SIGN) fprintf(handle, "NTLMFLAG_NEGOTIATE_ALWAYS_SIGN "); if(flags & NTLMFLAG_TARGET_TYPE_DOMAIN) fprintf(handle, "NTLMFLAG_TARGET_TYPE_DOMAIN "); if(flags & NTLMFLAG_TARGET_TYPE_SERVER) fprintf(handle, "NTLMFLAG_TARGET_TYPE_SERVER "); if(flags & NTLMFLAG_TARGET_TYPE_SHARE) fprintf(handle, "NTLMFLAG_TARGET_TYPE_SHARE "); if(flags & NTLMFLAG_NEGOTIATE_NTLM2_KEY) fprintf(handle, "NTLMFLAG_NEGOTIATE_NTLM2_KEY "); if(flags & NTLMFLAG_REQUEST_INIT_RESPONSE) fprintf(handle, "NTLMFLAG_REQUEST_INIT_RESPONSE "); if(flags & NTLMFLAG_REQUEST_ACCEPT_RESPONSE) fprintf(handle, "NTLMFLAG_REQUEST_ACCEPT_RESPONSE "); if(flags & NTLMFLAG_REQUEST_NONNT_SESSION_KEY) fprintf(handle, "NTLMFLAG_REQUEST_NONNT_SESSION_KEY "); if(flags & NTLMFLAG_NEGOTIATE_TARGET_INFO) fprintf(handle, "NTLMFLAG_NEGOTIATE_TARGET_INFO "); if(flags & (1<<24)) fprintf(handle, "NTLMFLAG_UNKNOWN_24 "); if(flags & (1<<25)) fprintf(handle, "NTLMFLAG_UNKNOWN_25 "); if(flags & (1<<26)) fprintf(handle, "NTLMFLAG_UNKNOWN_26 "); if(flags & (1<<27)) fprintf(handle, "NTLMFLAG_UNKNOWN_27 "); if(flags & (1<<28)) fprintf(handle, "NTLMFLAG_UNKNOWN_28 "); if(flags & NTLMFLAG_NEGOTIATE_128) fprintf(handle, "NTLMFLAG_NEGOTIATE_128 "); if(flags & NTLMFLAG_NEGOTIATE_KEY_EXCHANGE) fprintf(handle, "NTLMFLAG_NEGOTIATE_KEY_EXCHANGE "); if(flags & NTLMFLAG_NEGOTIATE_56) fprintf(handle, "NTLMFLAG_NEGOTIATE_56 "); } static void ntlm_print_hex(FILE *handle, const char *buf, size_t len) { const char *p = buf; (void) handle; fprintf(stderr, "0x"); while(len-- > 0) fprintf(stderr, "%02.2x", (unsigned int)*p++); } #else # define DEBUG_OUT(x) Curl_nop_stmt #endif /* * ntlm_decode_type2_target() * * This is used to decode the "target info" in the NTLM type-2 message * received. * * Parameters: * * data [in] - The session handle. * buffer [in] - The decoded type-2 message. * size [in] - The input buffer size, at least 32 bytes. * ntlm [in/out] - The NTLM data struct being used and modified. * * Returns CURLE_OK on success. */ static CURLcode ntlm_decode_type2_target(struct Curl_easy *data, unsigned char *buffer, size_t size, struct ntlmdata *ntlm) { unsigned short target_info_len = 0; unsigned int target_info_offset = 0; #if defined(CURL_DISABLE_VERBOSE_STRINGS) (void) data; #endif if(size >= 48) { target_info_len = Curl_read16_le(&buffer[40]); target_info_offset = Curl_read32_le(&buffer[44]); if(target_info_len > 0) { if((target_info_offset >= size) || ((target_info_offset + target_info_len) > size) || (target_info_offset < 48)) { infof(data, "NTLM handshake failure (bad type-2 message). " "Target Info Offset Len is set incorrect by the peer\n"); return CURLE_BAD_CONTENT_ENCODING; } free(ntlm->target_info); /* replace any previous data */ ntlm->target_info = malloc(target_info_len); if(!ntlm->target_info) return CURLE_OUT_OF_MEMORY; memcpy(ntlm->target_info, &buffer[target_info_offset], target_info_len); } } ntlm->target_info_len = target_info_len; return CURLE_OK; } /* NTLM message structure notes: A 'short' is a 'network short', a little-endian 16-bit unsigned value. A 'long' is a 'network long', a little-endian, 32-bit unsigned value. A 'security buffer' represents a triplet used to point to a buffer, consisting of two shorts and one long: 1. A 'short' containing the length of the buffer content in bytes. 2. A 'short' containing the allocated space for the buffer in bytes. 3. A 'long' containing the offset to the start of the buffer in bytes, from the beginning of the NTLM message. */ /* * Curl_auth_is_ntlm_supported() * * This is used to evaluate if NTLM is supported. * * Parameters: None * * Returns TRUE as NTLM as handled by libcurl. */ bool Curl_auth_is_ntlm_supported(void) { return TRUE; } /* * Curl_auth_decode_ntlm_type2_message() * * This is used to decode an already encoded NTLM type-2 message. The message * is first decoded from a base64 string into a raw NTLM message and checked * for validity before the appropriate data for creating a type-3 message is * written to the given NTLM data structure. * * Parameters: * * data [in] - The session handle. * type2msg [in] - The base64 encoded type-2 message. * ntlm [in/out] - The NTLM data struct being used and modified. * * Returns CURLE_OK on success. */ CURLcode Curl_auth_decode_ntlm_type2_message(struct Curl_easy *data, const char *type2msg, struct ntlmdata *ntlm) { static const char type2_marker[] = { 0x02, 0x00, 0x00, 0x00 }; /* NTLM type-2 message structure: Index Description Content 0 NTLMSSP Signature Null-terminated ASCII "NTLMSSP" (0x4e544c4d53535000) 8 NTLM Message Type long (0x02000000) 12 Target Name security buffer 20 Flags long 24 Challenge 8 bytes (32) Context 8 bytes (two consecutive longs) (*) (40) Target Information security buffer (*) (48) OS Version Structure 8 bytes (*) 32 (48) (56) Start of data block (*) (*) -> Optional */ CURLcode result = CURLE_OK; unsigned char *type2 = NULL; size_t type2_len = 0; #if defined(NTLM_NEEDS_NSS_INIT) /* Make sure the crypto backend is initialized */ result = Curl_nss_force_init(data); if(result) return result; #elif defined(CURL_DISABLE_VERBOSE_STRINGS) (void)data; #endif /* Decode the base-64 encoded type-2 message */ if(strlen(type2msg) && *type2msg != '=') { result = Curl_base64_decode(type2msg, &type2, &type2_len); if(result) return result; } /* Ensure we have a valid type-2 message */ if(!type2) { infof(data, "NTLM handshake failure (empty type-2 message)\n"); return CURLE_BAD_CONTENT_ENCODING; } ntlm->flags = 0; if((type2_len < 32) || (memcmp(type2, NTLMSSP_SIGNATURE, 8) != 0) || (memcmp(type2 + 8, type2_marker, sizeof(type2_marker)) != 0)) { /* This was not a good enough type-2 message */ free(type2); infof(data, "NTLM handshake failure (bad type-2 message)\n"); return CURLE_BAD_CONTENT_ENCODING; } ntlm->flags = Curl_read32_le(&type2[20]); memcpy(ntlm->nonce, &type2[24], 8); if(ntlm->flags & NTLMFLAG_NEGOTIATE_TARGET_INFO) { result = ntlm_decode_type2_target(data, type2, type2_len, ntlm); if(result) { free(type2); infof(data, "NTLM handshake failure (bad type-2 message)\n"); return result; } } DEBUG_OUT({ fprintf(stderr, "**** TYPE2 header flags=0x%08.8lx ", ntlm->flags); ntlm_print_flags(stderr, ntlm->flags); fprintf(stderr, "\n nonce="); ntlm_print_hex(stderr, (char *)ntlm->nonce, 8); fprintf(stderr, "\n****\n"); fprintf(stderr, "**** Header %s\n ", header); }); free(type2); return result; } /* copy the source to the destination and fill in zeroes in every other destination byte! */ static void unicodecpy(unsigned char *dest, const char *src, size_t length) { size_t i; for(i = 0; i < length; i++) { dest[2 * i] = (unsigned char)src[i]; dest[2 * i + 1] = '\0'; } } /* * Curl_auth_create_ntlm_type1_message() * * This is used to generate an already encoded NTLM type-1 message ready for * sending to the recipient using the appropriate compile time crypto API. * * Parameters: * * data [in] - The session handle. * userp [in] - The user name in the format User or Domain\User. * passwdp [in] - The user's password. * service [in] - The service type such as http, smtp, pop or imap. * host [in] - The host name. * ntlm [in/out] - The NTLM data struct being used and modified. * outptr [in/out] - The address where a pointer to newly allocated memory * holding the result will be stored upon completion. * outlen [out] - The length of the output message. * * Returns CURLE_OK on success. */ CURLcode Curl_auth_create_ntlm_type1_message(struct Curl_easy *data, const char *userp, const char *passwdp, const char *service, const char *hostname, struct ntlmdata *ntlm, char **outptr, size_t *outlen) { /* NTLM type-1 message structure: Index Description Content 0 NTLMSSP Signature Null-terminated ASCII "NTLMSSP" (0x4e544c4d53535000) 8 NTLM Message Type long (0x01000000) 12 Flags long (16) Supplied Domain security buffer (*) (24) Supplied Workstation security buffer (*) (32) OS Version Structure 8 bytes (*) (32) (40) Start of data block (*) (*) -> Optional */ size_t size; unsigned char ntlmbuf[NTLM_BUFSIZE]; const char *host = ""; /* empty */ const char *domain = ""; /* empty */ size_t hostlen = 0; size_t domlen = 0; size_t hostoff = 0; size_t domoff = hostoff + hostlen; /* This is 0: remember that host and domain are empty */ (void)userp; (void)passwdp; (void)service, (void)hostname, /* Clean up any former leftovers and initialise to defaults */ Curl_auth_cleanup_ntlm(ntlm); #if defined(USE_NTRESPONSES) && \ (defined(USE_NTLM2SESSION) || defined(USE_NTLM_V2)) #define NTLM2FLAG NTLMFLAG_NEGOTIATE_NTLM2_KEY #else #define NTLM2FLAG 0 #endif msnprintf((char *)ntlmbuf, NTLM_BUFSIZE, NTLMSSP_SIGNATURE "%c" "\x01%c%c%c" /* 32-bit type = 1 */ "%c%c%c%c" /* 32-bit NTLM flag field */ "%c%c" /* domain length */ "%c%c" /* domain allocated space */ "%c%c" /* domain name offset */ "%c%c" /* 2 zeroes */ "%c%c" /* host length */ "%c%c" /* host allocated space */ "%c%c" /* host name offset */ "%c%c" /* 2 zeroes */ "%s" /* host name */ "%s", /* domain string */ 0, /* trailing zero */ 0, 0, 0, /* part of type-1 long */ LONGQUARTET(NTLMFLAG_NEGOTIATE_OEM | NTLMFLAG_REQUEST_TARGET | NTLMFLAG_NEGOTIATE_NTLM_KEY | NTLM2FLAG | NTLMFLAG_NEGOTIATE_ALWAYS_SIGN), SHORTPAIR(domlen), SHORTPAIR(domlen), SHORTPAIR(domoff), 0, 0, SHORTPAIR(hostlen), SHORTPAIR(hostlen), SHORTPAIR(hostoff), 0, 0, host, /* this is empty */ domain /* this is empty */); /* Initial packet length */ size = 32 + hostlen + domlen; DEBUG_OUT({ fprintf(stderr, "* TYPE1 header flags=0x%02.2x%02.2x%02.2x%02.2x " "0x%08.8x ", LONGQUARTET(NTLMFLAG_NEGOTIATE_OEM | NTLMFLAG_REQUEST_TARGET | NTLMFLAG_NEGOTIATE_NTLM_KEY | NTLM2FLAG | NTLMFLAG_NEGOTIATE_ALWAYS_SIGN), NTLMFLAG_NEGOTIATE_OEM | NTLMFLAG_REQUEST_TARGET | NTLMFLAG_NEGOTIATE_NTLM_KEY | NTLM2FLAG | NTLMFLAG_NEGOTIATE_ALWAYS_SIGN); ntlm_print_flags(stderr, NTLMFLAG_NEGOTIATE_OEM | NTLMFLAG_REQUEST_TARGET | NTLMFLAG_NEGOTIATE_NTLM_KEY | NTLM2FLAG | NTLMFLAG_NEGOTIATE_ALWAYS_SIGN); fprintf(stderr, "\n****\n"); }); /* Return with binary blob encoded into base64 */ return Curl_base64_encode(data, (char *)ntlmbuf, size, outptr, outlen); } /* * Curl_auth_create_ntlm_type3_message() * * This is used to generate an already encoded NTLM type-3 message ready for * sending to the recipient using the appropriate compile time crypto API. * * Parameters: * * data [in] - The session handle. * userp [in] - The user name in the format User or Domain\User. * passwdp [in] - The user's password. * ntlm [in/out] - The NTLM data struct being used and modified. * outptr [in/out] - The address where a pointer to newly allocated memory * holding the result will be stored upon completion. * outlen [out] - The length of the output message. * * Returns CURLE_OK on success. */ CURLcode Curl_auth_create_ntlm_type3_message(struct Curl_easy *data, const char *userp, const char *passwdp, struct ntlmdata *ntlm, char **outptr, size_t *outlen) { /* NTLM type-3 message structure: Index Description Content 0 NTLMSSP Signature Null-terminated ASCII "NTLMSSP" (0x4e544c4d53535000) 8 NTLM Message Type long (0x03000000) 12 LM/LMv2 Response security buffer 20 NTLM/NTLMv2 Response security buffer 28 Target Name security buffer 36 User Name security buffer 44 Workstation Name security buffer (52) Session Key security buffer (*) (60) Flags long (*) (64) OS Version Structure 8 bytes (*) 52 (64) (72) Start of data block (*) -> Optional */ CURLcode result = CURLE_OK; size_t size; unsigned char ntlmbuf[NTLM_BUFSIZE]; int lmrespoff; unsigned char lmresp[24]; /* fixed-size */ #ifdef USE_NTRESPONSES int ntrespoff; unsigned int ntresplen = 24; unsigned char ntresp[24]; /* fixed-size */ unsigned char *ptr_ntresp = &ntresp[0]; unsigned char *ntlmv2resp = NULL; #endif bool unicode = (ntlm->flags & NTLMFLAG_NEGOTIATE_UNICODE) ? TRUE : FALSE; char host[HOSTNAME_MAX + 1] = ""; const char *user; const char *domain = ""; size_t hostoff = 0; size_t useroff = 0; size_t domoff = 0; size_t hostlen = 0; size_t userlen = 0; size_t domlen = 0; user = strchr(userp, '\\'); if(!user) user = strchr(userp, '/'); if(user) { domain = userp; domlen = (user - domain); user++; } else user = userp; userlen = strlen(user); /* Get the machine's un-qualified host name as NTLM doesn't like the fully qualified domain name */ if(Curl_gethostname(host, sizeof(host))) { infof(data, "gethostname() failed, continuing without!\n"); hostlen = 0; } else { hostlen = strlen(host); } #if defined(USE_NTRESPONSES) && \ (defined(USE_NTLM2SESSION) || defined(USE_NTLM_V2)) /* We don't support NTLM2 or extended security if we don't have USE_NTRESPONSES */ if(ntlm->flags & NTLMFLAG_NEGOTIATE_NTLM2_KEY) { # if defined(USE_NTLM_V2) unsigned char ntbuffer[0x18]; unsigned char entropy[8]; unsigned char ntlmv2hash[0x18]; /* Full NTLM version 2 Although this cannot be negotiated, it is used here if available, as servers featuring extended security are likely supporting also NTLMv2. */ result = Curl_rand(data, entropy, 8); if(result) return result; result = Curl_ntlm_core_mk_nt_hash(data, passwdp, ntbuffer); if(result) return result; result = Curl_ntlm_core_mk_ntlmv2_hash(user, userlen, domain, domlen, ntbuffer, ntlmv2hash); if(result) return result; /* LMv2 response */ result = Curl_ntlm_core_mk_lmv2_resp(ntlmv2hash, entropy, &ntlm->nonce[0], lmresp); if(result) return result; /* NTLMv2 response */ result = Curl_ntlm_core_mk_ntlmv2_resp(ntlmv2hash, entropy, ntlm, &ntlmv2resp, &ntresplen); if(result) return result; ptr_ntresp = ntlmv2resp; # else /* defined(USE_NTLM_V2) */ unsigned char ntbuffer[0x18]; unsigned char tmp[0x18]; unsigned char md5sum[MD5_DIGEST_LEN]; unsigned char entropy[8]; /* NTLM version 1 with extended security. */ /* Need to create 8 bytes random data */ result = Curl_rand(data, entropy, 8); if(result) return result; /* 8 bytes random data as challenge in lmresp */ memcpy(lmresp, entropy, 8); /* Pad with zeros */ memset(lmresp + 8, 0, 0x10); /* Fill tmp with challenge(nonce?) + entropy */ memcpy(tmp, &ntlm->nonce[0], 8); memcpy(tmp + 8, entropy, 8); Curl_md5it(md5sum, tmp, 16); /* We shall only use the first 8 bytes of md5sum, but the des code in Curl_ntlm_core_lm_resp only encrypt the first 8 bytes */ result = Curl_ntlm_core_mk_nt_hash(data, passwdp, ntbuffer); if(result) return result; Curl_ntlm_core_lm_resp(ntbuffer, md5sum, ntresp); /* End of NTLM2 Session code */ /* NTLM v2 session security is a misnomer because it is not NTLM v2. It is NTLM v1 using the extended session security that is also in NTLM v2 */ # endif /* defined(USE_NTLM_V2) */ } else #endif { #ifdef USE_NTRESPONSES unsigned char ntbuffer[0x18]; #endif unsigned char lmbuffer[0x18]; /* NTLM version 1 */ #ifdef USE_NTRESPONSES result = Curl_ntlm_core_mk_nt_hash(data, passwdp, ntbuffer); if(result) return result; Curl_ntlm_core_lm_resp(ntbuffer, &ntlm->nonce[0], ntresp); #endif result = Curl_ntlm_core_mk_lm_hash(data, passwdp, lmbuffer); if(result) return result; Curl_ntlm_core_lm_resp(lmbuffer, &ntlm->nonce[0], lmresp); ntlm->flags &= ~NTLMFLAG_NEGOTIATE_NTLM2_KEY; /* A safer but less compatible alternative is: * Curl_ntlm_core_lm_resp(ntbuffer, &ntlm->nonce[0], lmresp); * See https://davenport.sourceforge.io/ntlm.html#ntlmVersion2 */ } if(unicode) { domlen = domlen * 2; userlen = userlen * 2; hostlen = hostlen * 2; } lmrespoff = 64; /* size of the message header */ #ifdef USE_NTRESPONSES ntrespoff = lmrespoff + 0x18; domoff = ntrespoff + ntresplen; #else domoff = lmrespoff + 0x18; #endif useroff = domoff + domlen; hostoff = useroff + userlen; /* Create the big type-3 message binary blob */ size = msnprintf((char *)ntlmbuf, NTLM_BUFSIZE, NTLMSSP_SIGNATURE "%c" "\x03%c%c%c" /* 32-bit type = 3 */ "%c%c" /* LanManager length */ "%c%c" /* LanManager allocated space */ "%c%c" /* LanManager offset */ "%c%c" /* 2 zeroes */ "%c%c" /* NT-response length */ "%c%c" /* NT-response allocated space */ "%c%c" /* NT-response offset */ "%c%c" /* 2 zeroes */ "%c%c" /* domain length */ "%c%c" /* domain allocated space */ "%c%c" /* domain name offset */ "%c%c" /* 2 zeroes */ "%c%c" /* user length */ "%c%c" /* user allocated space */ "%c%c" /* user offset */ "%c%c" /* 2 zeroes */ "%c%c" /* host length */ "%c%c" /* host allocated space */ "%c%c" /* host offset */ "%c%c" /* 2 zeroes */ "%c%c" /* session key length (unknown purpose) */ "%c%c" /* session key allocated space (unknown purpose) */ "%c%c" /* session key offset (unknown purpose) */ "%c%c" /* 2 zeroes */ "%c%c%c%c", /* flags */ /* domain string */ /* user string */ /* host string */ /* LanManager response */ /* NT response */ 0, /* zero termination */ 0, 0, 0, /* type-3 long, the 24 upper bits */ SHORTPAIR(0x18), /* LanManager response length, twice */ SHORTPAIR(0x18), SHORTPAIR(lmrespoff), 0x0, 0x0, #ifdef USE_NTRESPONSES SHORTPAIR(ntresplen), /* NT-response length, twice */ SHORTPAIR(ntresplen), SHORTPAIR(ntrespoff), 0x0, 0x0, #else 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, #endif 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, LONGQUARTET(ntlm->flags)); DEBUGASSERT(size == 64); DEBUGASSERT(size == (size_t)lmrespoff); /* We append the binary hashes */ if(size < (NTLM_BUFSIZE - 0x18)) { memcpy(&ntlmbuf[size], lmresp, 0x18); size += 0x18; } DEBUG_OUT({ fprintf(stderr, "**** TYPE3 header lmresp="); ntlm_print_hex(stderr, (char *)&ntlmbuf[lmrespoff], 0x18); }); #ifdef USE_NTRESPONSES /* ntresplen + size should not be risking an integer overflow here */ if(ntresplen + size > sizeof(ntlmbuf)) { failf(data, "incoming NTLM message too big"); return CURLE_OUT_OF_MEMORY; } DEBUGASSERT(size == (size_t)ntrespoff); memcpy(&ntlmbuf[size], ptr_ntresp, ntresplen); size += ntresplen; DEBUG_OUT({ fprintf(stderr, "\n ntresp="); ntlm_print_hex(stderr, (char *)&ntlmbuf[ntrespoff], ntresplen); }); free(ntlmv2resp);/* Free the dynamic buffer allocated for NTLMv2 */ #endif DEBUG_OUT({ fprintf(stderr, "\n flags=0x%02.2x%02.2x%02.2x%02.2x 0x%08.8x ", LONGQUARTET(ntlm->flags), ntlm->flags); ntlm_print_flags(stderr, ntlm->flags); fprintf(stderr, "\n****\n"); }); /* Make sure that the domain, user and host strings fit in the buffer before we copy them there. */ if(size + userlen + domlen + hostlen >= NTLM_BUFSIZE) { failf(data, "user + domain + host name too big"); return CURLE_OUT_OF_MEMORY; } DEBUGASSERT(size == domoff); if(unicode) unicodecpy(&ntlmbuf[size], domain, domlen / 2); else memcpy(&ntlmbuf[size], domain, domlen); size += domlen; DEBUGASSERT(size == useroff); if(unicode) unicodecpy(&ntlmbuf[size], user, userlen / 2); else memcpy(&ntlmbuf[size], user, userlen); size += userlen; DEBUGASSERT(size == hostoff); if(unicode) unicodecpy(&ntlmbuf[size], host, hostlen / 2); else memcpy(&ntlmbuf[size], host, hostlen); size += hostlen; /* Convert domain, user, and host to ASCII but leave the rest as-is */ result = Curl_convert_to_network(data, (char *)&ntlmbuf[domoff], size - domoff); if(result) return CURLE_CONV_FAILED; /* Return with binary blob encoded into base64 */ result = Curl_base64_encode(data, (char *)ntlmbuf, size, outptr, outlen); Curl_auth_cleanup_ntlm(ntlm); return result; } /* * Curl_auth_cleanup_ntlm() * * This is used to clean up the NTLM specific data. * * Parameters: * * ntlm [in/out] - The NTLM data struct being cleaned up. * */ void Curl_auth_cleanup_ntlm(struct ntlmdata *ntlm) { /* Free the target info */ Curl_safefree(ntlm->target_info); /* Reset any variables */ ntlm->target_info_len = 0; } #endif /* USE_NTLM && !USE_WINDOWS_SSPI */