/*************************************************************************** * _ _ ____ _ * Project ___| | | | _ \| | * / __| | | | |_) | | * | (__| |_| | _ <| |___ * \___|\___/|_| \_\_____| * * Copyright (C) 1998 - 2011, 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 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. * ***************************************************************************/ #include "setup.h" /* NTLM details: http://davenport.sourceforge.net/ntlm.html http://www.innovation.ch/java/ntlm.html */ #ifndef CURL_DISABLE_HTTP #ifdef USE_NTLM #define DEBUG_ME 0 #ifdef HAVE_UNISTD_H #include #endif #ifdef HAVE_SYS_WAIT_H #include #endif #ifdef HAVE_SIGNAL_H #include #endif #if (defined(NETWARE) && !defined(__NOVELL_LIBC__)) #include #endif #include "urldata.h" #include "non-ascii.h" /* for Curl_convert_... prototypes */ #include "sendf.h" #include "select.h" #include "rawstr.h" #include "curl_base64.h" #include "curl_ntlm.h" #include "url.h" #include "strerror.h" #include "curl_gethostname.h" #include "curl_memory.h" #define _MPRINTF_REPLACE /* use our functions only */ #include #ifdef USE_SSLEAY #include "ssluse.h" # ifdef USE_OPENSSL # include # ifndef OPENSSL_NO_MD4 # include # endif # include # include # include # else # include # ifndef OPENSSL_NO_MD4 # include # endif # include # include # include # endif #ifndef OPENSSL_VERSION_NUMBER #error "OPENSSL_VERSION_NUMBER not defined" #endif #if OPENSSL_VERSION_NUMBER < 0x00907001L #define DES_key_schedule des_key_schedule #define DES_cblock des_cblock #define DES_set_odd_parity des_set_odd_parity #define DES_set_key des_set_key #define DES_ecb_encrypt des_ecb_encrypt /* This is how things were done in the old days */ #define DESKEY(x) x #define DESKEYARG(x) x #else /* Modern version */ #define DESKEYARG(x) *x #define DESKEY(x) &x #endif #ifdef OPENSSL_NO_MD4 /* This requires MD4, but OpenSSL was compiled without it */ #define USE_NTRESPONSES 0 #define USE_NTLM2SESSION 0 #endif #elif defined(USE_GNUTLS) #include "gtls.h" #include #define MD5_DIGEST_LENGTH 16 #define MD4_DIGEST_LENGTH 16 #elif defined(USE_NSS) #include "curl_md4.h" #include "nssg.h" #include #include #include #define MD5_DIGEST_LENGTH MD5_LENGTH #elif defined(USE_WINDOWS_SSPI) #include "curl_sspi.h" #else # error "Can't compile NTLM support without a crypto library." #endif /* The last #include file should be: */ #include "memdebug.h" /* Hostname buffer size */ #define HOSTNAME_MAX 1024 /* "NTLMSSP" signature is always in ASCII regardless of the platform */ #define NTLMSSP_SIGNATURE "\x4e\x54\x4c\x4d\x53\x53\x50" #ifndef USE_NTRESPONSES /* Define this to make the type-3 message include the NT response message */ #define USE_NTRESPONSES 1 /* Define this to make the type-3 message include the NTLM2Session response message, requires USE_NTRESPONSES. */ #define USE_NTLM2SESSION 1 #endif #define SHORTPAIR(x) ((x) & 0xff), (((x) >> 8) & 0xff) #define LONGQUARTET(x) ((x) & 0xff), (((x) >> 8) & 0xff), \ (((x) >> 16) & 0xff), (((x) >> 24) & 0xff) #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; fprintf(stderr, "0x"); while(len-- > 0) fprintf(stderr, "%02.2x", (unsigned int)*p++); } #else # define DEBUG_OUT(x) #endif #ifndef USE_WINDOWS_SSPI /* * This function converts from the little endian format used in the * incoming package to whatever endian format we're using natively. * Argument is a pointer to a 4 byte buffer. */ static unsigned int readint_le(unsigned char *buf) { return ((unsigned int)buf[0]) | ((unsigned int)buf[1] << 8) | ((unsigned int)buf[2] << 16) | ((unsigned int)buf[3] << 24); } #endif /* 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_ntlm_decode_type2_message() * * This is used to decode a ntlm type-2 message received from a: HTTP, SMTP * or POP3 server. 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] - Pointer to session handle. * header [in] - Pointer to the input buffer. * ntlm [in] - Pointer to ntlm data struct being used and modified. * * Returns CURLE_OK on success. */ CURLcode Curl_ntlm_decode_type2_message(struct SessionHandle *data, const char* header, struct ntlmdata* ntlm) { #ifndef USE_WINDOWS_SSPI static const char type2_marker[] = { 0x02, 0x00, 0x00, 0x00 }; #endif /* 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 */ size_t size = 0; unsigned char *buffer = NULL; CURLcode error; #if defined(CURL_DISABLE_VERBOSE_STRINGS) || defined(USE_WINDOWS_SSPI) (void)data; #endif error = Curl_base64_decode(header, &buffer, &size); if(error) return error; if(!buffer) { infof(data, "NTLM handshake failure (unhandled condition)\n"); return CURLE_REMOTE_ACCESS_DENIED; } #ifdef USE_WINDOWS_SSPI ntlm->type_2 = malloc(size + 1); if(ntlm->type_2 == NULL) { free(buffer); return CURLE_OUT_OF_MEMORY; } ntlm->n_type_2 = (unsigned long)size; memcpy(ntlm->type_2, buffer, size); #else ntlm->flags = 0; if((size < 32) || (memcmp(buffer, NTLMSSP_SIGNATURE, 8) != 0) || (memcmp(buffer + 8, type2_marker, sizeof(type2_marker)) != 0)) { /* This was not a good enough type-2 message */ free(buffer); infof(data, "NTLM handshake failure (bad type-2 message)\n"); return CURLE_REMOTE_ACCESS_DENIED; } ntlm->flags = readint_le(&buffer[20]); memcpy(ntlm->nonce, &buffer[24], 8); 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); }); #endif free(buffer); return CURLE_OK; } #ifndef USE_WINDOWS_SSPI #ifdef USE_SSLEAY /* * 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(const unsigned char *key_56, DES_key_schedule DESKEYARG(ks)) { DES_cblock key; key[0] = key_56[0]; key[1] = (unsigned char)(((key_56[0] << 7) & 0xFF) | (key_56[1] >> 1)); key[2] = (unsigned char)(((key_56[1] << 6) & 0xFF) | (key_56[2] >> 2)); key[3] = (unsigned char)(((key_56[2] << 5) & 0xFF) | (key_56[3] >> 3)); key[4] = (unsigned char)(((key_56[3] << 4) & 0xFF) | (key_56[4] >> 4)); key[5] = (unsigned char)(((key_56[4] << 3) & 0xFF) | (key_56[5] >> 5)); key[6] = (unsigned char)(((key_56[5] << 2) & 0xFF) | (key_56[6] >> 6)); key[7] = (unsigned char) ((key_56[6] << 1) & 0xFF); DES_set_odd_parity(&key); DES_set_key(&key, ks); } #else /* defined(USE_SSLEAY) */ /* * Turns a 56 bit key into the 64 bit, odd parity key. Used by GnuTLS and NSS. */ static void extend_key_56_to_64(const unsigned char *key_56, char *key) { key[0] = key_56[0]; key[1] = (unsigned char)(((key_56[0] << 7) & 0xFF) | (key_56[1] >> 1)); key[2] = (unsigned char)(((key_56[1] << 6) & 0xFF) | (key_56[2] >> 2)); key[3] = (unsigned char)(((key_56[2] << 5) & 0xFF) | (key_56[3] >> 3)); key[4] = (unsigned char)(((key_56[3] << 4) & 0xFF) | (key_56[4] >> 4)); key[5] = (unsigned char)(((key_56[4] << 3) & 0xFF) | (key_56[5] >> 5)); key[6] = (unsigned char)(((key_56[5] << 2) & 0xFF) | (key_56[6] >> 6)); key[7] = (unsigned char) ((key_56[6] << 1) & 0xFF); } #if defined(USE_GNUTLS) /* * Turns a 56 bit key into the 64 bit, odd parity key and sets the key. */ static void setup_des_key(const unsigned char *key_56, gcry_cipher_hd_t *des) { char key[8]; extend_key_56_to_64(key_56, key); gcry_cipher_setkey(*des, key, 8); } #elif defined(USE_NSS) /* * Expands a 56 bit key KEY_56 to 64 bit and encrypts 64 bit of data, using * the expanded key. The caller is responsible for giving 64 bit of valid * data is IN and (at least) 64 bit large buffer as OUT. */ static bool encrypt_des(const unsigned char *in, unsigned char *out, const unsigned char *key_56) { const CK_MECHANISM_TYPE mech = CKM_DES_ECB; /* DES cipher in ECB mode */ PK11SlotInfo *slot = NULL; char key[8]; /* expanded 64 bit key */ SECItem key_item; PK11SymKey *symkey = NULL; SECItem *param = NULL; PK11Context *ctx = NULL; int out_len; /* not used, required by NSS */ bool rv = FALSE; /* use internal slot for DES encryption (requires NSS to be initialized) */ slot = PK11_GetInternalKeySlot(); if(!slot) return FALSE; /* expand the 56 bit key to 64 bit and wrap by NSS */ extend_key_56_to_64(key_56, key); key_item.data = (unsigned char *)key; key_item.len = /* hard-wired */ 8; symkey = PK11_ImportSymKey(slot, mech, PK11_OriginUnwrap, CKA_ENCRYPT, &key_item, NULL); if(!symkey) goto fail; /* create DES encryption context */ param = PK11_ParamFromIV(mech, /* no IV in ECB mode */ NULL); if(!param) goto fail; ctx = PK11_CreateContextBySymKey(mech, CKA_ENCRYPT, symkey, param); if(!ctx) goto fail; /* perform the encryption */ if(SECSuccess == PK11_CipherOp(ctx, out, &out_len, /* outbuflen */ 8, (unsigned char *)in, /* inbuflen */ 8) && SECSuccess == PK11_Finalize(ctx)) rv = /* all OK */ TRUE; fail: /* cleanup */ if(ctx) PK11_DestroyContext(ctx, PR_TRUE); if(symkey) PK11_FreeSymKey(symkey); if(param) SECITEM_FreeItem(param, PR_TRUE); PK11_FreeSlot(slot); return rv; } #endif /* defined(USE_NSS) */ #endif /* defined(USE_SSLEAY) */ /* * 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 lm_resp(const unsigned char *keys, const unsigned char *plaintext, unsigned char *results) { #ifdef USE_SSLEAY DES_key_schedule ks; setup_des_key(keys, DESKEY(ks)); DES_ecb_encrypt((DES_cblock*) plaintext, (DES_cblock*) results, DESKEY(ks), DES_ENCRYPT); setup_des_key(keys + 7, DESKEY(ks)); DES_ecb_encrypt((DES_cblock*) plaintext, (DES_cblock*) (results + 8), DESKEY(ks), DES_ENCRYPT); setup_des_key(keys + 14, DESKEY(ks)); DES_ecb_encrypt((DES_cblock*) plaintext, (DES_cblock*) (results + 16), DESKEY(ks), DES_ENCRYPT); #elif defined(USE_GNUTLS) gcry_cipher_hd_t des; gcry_cipher_open(&des, GCRY_CIPHER_DES, GCRY_CIPHER_MODE_ECB, 0); setup_des_key(keys, &des); gcry_cipher_encrypt(des, results, 8, plaintext, 8); gcry_cipher_close(des); gcry_cipher_open(&des, GCRY_CIPHER_DES, GCRY_CIPHER_MODE_ECB, 0); setup_des_key(keys + 7, &des); gcry_cipher_encrypt(des, results + 8, 8, plaintext, 8); gcry_cipher_close(des); gcry_cipher_open(&des, GCRY_CIPHER_DES, GCRY_CIPHER_MODE_ECB, 0); setup_des_key(keys + 14, &des); gcry_cipher_encrypt(des, results + 16, 8, plaintext, 8); gcry_cipher_close(des); #elif defined(USE_NSS) encrypt_des(plaintext, results, keys); encrypt_des(plaintext, results + 8, keys + 7); encrypt_des(plaintext, results + 16, keys + 14); #endif } /* * Set up lanmanager hashed password */ static void mk_lm_hash(struct SessionHandle *data, const char *password, unsigned char *lmbuffer /* 21 bytes */) { CURLcode res; unsigned char pw[14]; static const unsigned char magic[] = { 0x4B, 0x47, 0x53, 0x21, 0x40, 0x23, 0x24, 0x25 /* i.e. KGS!@#$% */ }; size_t len = CURLMIN(strlen(password), 14); Curl_strntoupper((char *)pw, password, len); memset(&pw[len], 0, 14 - len); /* * The LanManager hashed password needs to be created using the * password in the network encoding not the host encoding. */ res = Curl_convert_to_network(data, (char *)pw, 14); if(res) return; { /* Create LanManager hashed password. */ #ifdef USE_SSLEAY DES_key_schedule ks; setup_des_key(pw, DESKEY(ks)); DES_ecb_encrypt((DES_cblock *)magic, (DES_cblock *)lmbuffer, DESKEY(ks), DES_ENCRYPT); setup_des_key(pw + 7, DESKEY(ks)); DES_ecb_encrypt((DES_cblock *)magic, (DES_cblock *)(lmbuffer + 8), DESKEY(ks), DES_ENCRYPT); #elif defined(USE_GNUTLS) gcry_cipher_hd_t des; gcry_cipher_open(&des, GCRY_CIPHER_DES, GCRY_CIPHER_MODE_ECB, 0); setup_des_key(pw, &des); gcry_cipher_encrypt(des, lmbuffer, 8, magic, 8); gcry_cipher_close(des); gcry_cipher_open(&des, GCRY_CIPHER_DES, GCRY_CIPHER_MODE_ECB, 0); setup_des_key(pw + 7, &des); gcry_cipher_encrypt(des, lmbuffer + 8, 8, magic, 8); gcry_cipher_close(des); #elif defined(USE_NSS) encrypt_des(magic, lmbuffer, pw); encrypt_des(magic, lmbuffer + 8, pw + 7); #endif memset(lmbuffer + 16, 0, 21 - 16); } } #if USE_NTRESPONSES static void ascii_to_unicode_le(unsigned char *dest, const char *src, size_t srclen) { size_t i; for(i = 0; i < srclen; i++) { dest[2 * i] = (unsigned char)src[i]; dest[2 * i + 1] = '\0'; } } /* * Set up nt hashed passwords */ static CURLcode mk_nt_hash(struct SessionHandle *data, const char *password, unsigned char *ntbuffer /* 21 bytes */) { size_t len = strlen(password); unsigned char *pw = malloc(len * 2); CURLcode result; if(!pw) return CURLE_OUT_OF_MEMORY; ascii_to_unicode_le(pw, password, len); /* * The NT hashed password needs to be created using the password in the * network encoding not the host encoding. */ result = Curl_convert_to_network(data, (char *)pw, len * 2); if(result) return result; { /* Create NT hashed password. */ #ifdef USE_SSLEAY MD4_CTX MD4pw; MD4_Init(&MD4pw); MD4_Update(&MD4pw, pw, 2 * len); MD4_Final(ntbuffer, &MD4pw); #elif defined(USE_GNUTLS) gcry_md_hd_t MD4pw; gcry_md_open(&MD4pw, GCRY_MD_MD4, 0); gcry_md_write(MD4pw, pw, 2 * len); memcpy (ntbuffer, gcry_md_read (MD4pw, 0), MD4_DIGEST_LENGTH); gcry_md_close(MD4pw); #elif defined(USE_NSS) Curl_md4it(ntbuffer, pw, 2 * len); #endif memset(ntbuffer + 16, 0, 21 - 16); } free(pw); return CURLE_OK; } #endif #endif #ifdef USE_WINDOWS_SSPI void Curl_ntlm_sspi_cleanup(struct ntlmdata *ntlm) { if(ntlm->type_2) { free(ntlm->type_2); ntlm->type_2 = NULL; } if(ntlm->has_handles) { s_pSecFn->DeleteSecurityContext(&ntlm->c_handle); s_pSecFn->FreeCredentialsHandle(&ntlm->handle); ntlm->has_handles = 0; } if(ntlm->p_identity) { if(ntlm->identity.User) free(ntlm->identity.User); if(ntlm->identity.Password) free(ntlm->identity.Password); if(ntlm->identity.Domain) free(ntlm->identity.Domain); ntlm->p_identity = NULL; } } #endif #ifndef USE_WINDOWS_SSPI /* 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'; } } #endif /* * Curl_ntlm_create_type1_message() * * This is used to generate a ntlm type-1 message ready for encoding * and sending to the recipient, be it a: HTTP, SMTP or POP3 server, * using the appropriate compile time crypo API. * * Parameters: * * userp [in] - The user name in the format User or Domain\User. * passdwp [in] - The user's password. * ntlm [in] - The ntlm data struct being used and modified. * ntlmbuf [in] - Pointer to preallocated buffer to receive message. * sizep [out] - Size of message written into output buffer. * * Returns CURLE_OK on success. */ CURLcode Curl_ntlm_create_type1_message(const char *userp, const char *passwdp, struct ntlmdata *ntlm, unsigned char *ntlmbuf, size_t *sizep) { size_t size; /* 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 */ #ifdef USE_WINDOWS_SSPI SecBuffer buf; SecBufferDesc desc; SECURITY_STATUS status; ULONG attrs; const char *dest = ""; const char *user; const char *domain = ""; size_t userlen = 0; size_t domlen = 0; size_t passwdlen = 0; TimeStamp tsDummy; /* For Windows 9x compatibility of SSPI calls */ Curl_ntlm_sspi_cleanup(ntlm); user = strchr(userp, '\\'); if(!user) user = strchr(userp, '/'); if(user) { domain = userp; domlen = user - userp; user++; } else { user = userp; domain = ""; domlen = 0; } if(user) userlen = strlen(user); if(passwdp) passwdlen = strlen(passwdp); if(userlen > 0) { /* note: initialize all of this before doing the mallocs so that * it can be cleaned up later without leaking memory. */ ntlm->p_identity = &ntlm->identity; memset(ntlm->p_identity, 0, sizeof(*ntlm->p_identity)); if((ntlm->identity.User = (unsigned char *)strdup(user)) == NULL) return CURLE_OUT_OF_MEMORY; ntlm->identity.UserLength = (unsigned long)userlen; if((ntlm->identity.Password = (unsigned char *)strdup(passwdp)) == NULL) return CURLE_OUT_OF_MEMORY; ntlm->identity.PasswordLength = (unsigned long)strlen(passwdp); if((ntlm->identity.Domain = malloc(domlen + 1)) == NULL) return CURLE_OUT_OF_MEMORY; strncpy((char *)ntlm->identity.Domain, domain, domlen); ntlm->identity.Domain[domlen] = '\0'; ntlm->identity.DomainLength = (unsigned long)domlen; ntlm->identity.Flags = SEC_WINNT_AUTH_IDENTITY_ANSI; } else ntlm->p_identity = NULL; status = s_pSecFn->AcquireCredentialsHandleA(NULL, (void *)"NTLM", SECPKG_CRED_OUTBOUND, NULL, ntlm->p_identity, NULL, NULL, &ntlm->handle, &tsDummy); if(status != SEC_E_OK) return CURLE_OUT_OF_MEMORY; desc.ulVersion = SECBUFFER_VERSION; desc.cBuffers = 1; desc.pBuffers = &buf; buf.cbBuffer = NTLM_BUFSIZE; buf.BufferType = SECBUFFER_TOKEN; buf.pvBuffer = ntlmbuf; status = s_pSecFn->InitializeSecurityContextA(&ntlm->handle, NULL, (void *)dest, ISC_REQ_CONFIDENTIALITY | ISC_REQ_REPLAY_DETECT | ISC_REQ_CONNECTION, 0, SECURITY_NETWORK_DREP, NULL, 0, &ntlm->c_handle, &desc, &attrs, &tsDummy); if(status == SEC_I_COMPLETE_AND_CONTINUE || status == SEC_I_CONTINUE_NEEDED) s_pSecFn->CompleteAuthToken(&ntlm->c_handle, &desc); else if(status != SEC_E_OK) { s_pSecFn->FreeCredentialsHandle(&ntlm->handle); return CURLE_RECV_ERROR; } ntlm->has_handles = 1; size = buf.cbBuffer; #else 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)ntlm; #if USE_NTLM2SESSION #define NTLM2FLAG NTLMFLAG_NEGOTIATE_NTLM2_KEY #else #define NTLM2FLAG 0 #endif snprintf((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; #endif 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 the message size */ *sizep = size; return CURLE_OK; } /* * Curl_ntlm_create_type3_message() * * This is used to generate a ntlm type-3 message ready for encoding * and sending to the recipient, be it a: HTTP, SMTP or POP3 server, * using the appropriate compile time crypo API. * * Parameters: * * data [in] - The session handle. * userp [in] - The user name in the format User or Domain\User. * passdwp [in] - The user's password. * ntlm [in] - The ntlm data struct being used and modified. * ntlmbuf [in] - Pointer to preallocated buffer to receive message. * sizep [out] - Size of message written into output buffer. * * Returns CURLE_OK on success. */ CURLcode Curl_ntlm_create_type3_message(struct SessionHandle *data, const char *userp, const char *passwdp, struct ntlmdata *ntlm, unsigned char *ntlmbuf, size_t *sizep) { /* 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 */ size_t size; #ifdef USE_WINDOWS_SSPI const char *dest = ""; SecBuffer type_2; SecBuffer type_3; SecBufferDesc type_2_desc; SecBufferDesc type_3_desc; SECURITY_STATUS status; ULONG attrs; TimeStamp tsDummy; /* For Windows 9x compatibility of SSPI calls */ (void)passwdp; (void)userp; (void)data; type_2_desc.ulVersion = type_3_desc.ulVersion = SECBUFFER_VERSION; type_2_desc.cBuffers = type_3_desc.cBuffers = 1; type_2_desc.pBuffers = &type_2; type_3_desc.pBuffers = &type_3; type_2.BufferType = SECBUFFER_TOKEN; type_2.pvBuffer = ntlm->type_2; type_2.cbBuffer = ntlm->n_type_2; type_3.BufferType = SECBUFFER_TOKEN; type_3.pvBuffer = ntlmbuf; type_3.cbBuffer = NTLM_BUFSIZE; status = s_pSecFn->InitializeSecurityContextA(&ntlm->handle, &ntlm->c_handle, (void *)dest, ISC_REQ_CONFIDENTIALITY | ISC_REQ_REPLAY_DETECT | ISC_REQ_CONNECTION, 0, SECURITY_NETWORK_DREP, &type_2_desc, 0, &ntlm->c_handle, &type_3_desc, &attrs, &tsDummy); if(status != SEC_E_OK) return CURLE_RECV_ERROR; size = type_3.cbBuffer; Curl_ntlm_sspi_cleanup(ntlm); #else int lmrespoff; unsigned char lmresp[24]; /* fixed-size */ #if USE_NTRESPONSES int ntrespoff; unsigned char ntresp[24]; /* fixed-size */ #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; CURLcode res; user = strchr(userp, '\\'); if(!user) user = strchr(userp, '/'); if(user) { domain = userp; domlen = (user - domain); user++; } else user = userp; if(user) userlen = strlen(user); if(Curl_gethostname(host, HOSTNAME_MAX)) { infof(data, "gethostname() failed, continuing without!"); hostlen = 0; } else { /* If the workstation if configured with a full DNS name (i.e. * workstation.somewhere.net) gethostname() returns the fully qualified * name, which NTLM doesn't like. */ char *dot = strchr(host, '.'); if(dot) *dot = '\0'; hostlen = strlen(host); } if(unicode) { domlen = domlen * 2; userlen = userlen * 2; hostlen = hostlen * 2; } #if USE_NTLM2SESSION /* We don't support NTLM2 if we don't have USE_NTRESPONSES */ if(ntlm->flags & NTLMFLAG_NEGOTIATE_NTLM2_KEY) { unsigned char ntbuffer[0x18]; unsigned char tmp[0x18]; unsigned char md5sum[MD5_DIGEST_LENGTH]; unsigned char entropy[8]; /* Need to create 8 bytes random data */ #ifdef USE_SSLEAY MD5_CTX MD5pw; Curl_ossl_seed(data); /* Initiate the seed if not already done */ RAND_bytes(entropy, 8); #elif defined(USE_GNUTLS) gcry_md_hd_t MD5pw; Curl_gtls_seed(data); /* Initiate the seed if not already done */ gcry_randomize(entropy, 8, GCRY_STRONG_RANDOM); #elif defined(USE_NSS) PK11Context *MD5pw; unsigned int outlen; Curl_nss_seed(data); /* Initiate the seed if not already done */ PK11_GenerateRandom(entropy, 8); #endif /* 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); #ifdef USE_SSLEAY MD5_Init(&MD5pw); MD5_Update(&MD5pw, tmp, 16); MD5_Final(md5sum, &MD5pw); #elif defined(USE_GNUTLS) gcry_md_open(&MD5pw, GCRY_MD_MD5, 0); gcry_md_write(MD5pw, tmp, MD5_DIGEST_LENGTH); memcpy(md5sum, gcry_md_read (MD5pw, 0), MD5_DIGEST_LENGTH); gcry_md_close(MD5pw); #elif defined(USE_NSS) MD5pw = PK11_CreateDigestContext(SEC_OID_MD5); PK11_DigestOp(MD5pw, tmp, 16); PK11_DigestFinal(MD5pw, md5sum, &outlen, MD5_DIGEST_LENGTH); PK11_DestroyContext(MD5pw, PR_TRUE); #endif /* We shall only use the first 8 bytes of md5sum, but the des code in lm_resp only encrypt the first 8 bytes */ if(mk_nt_hash(data, passwdp, ntbuffer) == CURLE_OUT_OF_MEMORY) return CURLE_OUT_OF_MEMORY; lm_resp(ntbuffer, md5sum, ntresp); /* End of NTLM2 Session code */ } else #endif { #if USE_NTRESPONSES unsigned char ntbuffer[0x18]; #endif unsigned char lmbuffer[0x18]; #if USE_NTRESPONSES if(mk_nt_hash(data, passwdp, ntbuffer) == CURLE_OUT_OF_MEMORY) return CURLE_OUT_OF_MEMORY; lm_resp(ntbuffer, &ntlm->nonce[0], ntresp); #endif mk_lm_hash(data, passwdp, lmbuffer); lm_resp(lmbuffer, &ntlm->nonce[0], lmresp); /* A safer but less compatible alternative is: * lm_resp(ntbuffer, &ntlm->nonce[0], lmresp); * See http://davenport.sourceforge.net/ntlm.html#ntlmVersion2 */ } lmrespoff = 64; /* size of the message header */ #if USE_NTRESPONSES ntrespoff = lmrespoff + 0x18; domoff = ntrespoff + 0x18; #else domoff = lmrespoff + 0x18; #endif useroff = domoff + domlen; hostoff = useroff + userlen; /* Create the big type-3 message binary blob */ size = snprintf((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, #if USE_NTRESPONSES SHORTPAIR(0x18), /* NT-response length, twice */ SHORTPAIR(0x18), 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); }); #if USE_NTRESPONSES if(size < (NTLM_BUFSIZE - 0x18)) { DEBUGASSERT(size == (size_t)ntrespoff); memcpy(&ntlmbuf[size], ntresp, 0x18); size += 0x18; } DEBUG_OUT({ fprintf(stderr, "\n ntresp="); ntlm_print_hex(stderr, (char *)&ntlmbuf[ntrespoff], 0x18); }); #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 */ res = Curl_convert_to_network(data, (char *)&ntlmbuf[domoff], size - domoff); if(res) return CURLE_CONV_FAILED; #endif /* Return the message size */ *sizep = size; return CURLE_OK; } #endif /* USE_NTLM */ #endif /* !CURL_DISABLE_HTTP */