diff options
Diffstat (limited to 'lib/curl_ntlm.c')
| -rw-r--r-- | lib/curl_ntlm.c | 1034 |
1 files changed, 145 insertions, 889 deletions
diff --git a/lib/curl_ntlm.c b/lib/curl_ntlm.c index 4398d146c..50659b0cc 100644 --- a/lib/curl_ntlm.c +++ b/lib/curl_ntlm.c @@ -35,20 +35,26 @@ #ifdef HAVE_UNISTD_H #include <unistd.h> #endif +#ifdef HAVE_SYS_WAIT_H +#include <sys/wait.h> +#endif +#ifdef HAVE_SIGNAL_H +#include <signal.h> +#endif #if (defined(NETWARE) && !defined(__NOVELL_LIBC__)) #include <netdb.h> #endif -#define BUILDING_CURL_NTLM_C - #include "urldata.h" -#include "non-ascii.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 "curl_ntlm_msgs.h" +#include "curl_ntlm_wb.h" #include "url.h" #include "strerror.h" #include "curl_gethostname.h" @@ -57,941 +63,191 @@ #define _MPRINTF_REPLACE /* use our functions only */ #include <curl/mprintf.h> -#ifdef USE_SSLEAY -#include "ssluse.h" -# ifdef USE_OPENSSL -# include <openssl/des.h> -# ifndef OPENSSL_NO_MD4 -# include <openssl/md4.h> -# endif -# include <openssl/md5.h> -# include <openssl/ssl.h> -# include <openssl/rand.h> -# else -# include <des.h> -# ifndef OPENSSL_NO_MD4 -# include <md4.h> -# endif -# include <md5.h> -# include <ssl.h> -# include <rand.h> -# endif - -#ifndef OPENSSL_VERSION_NUMBER -#error "OPENSSL_VERSION_NUMBER not defined" -#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 <gcrypt.h> - -#define MD5_DIGEST_LENGTH 16 -#define MD4_DIGEST_LENGTH 16 - -#elif defined(USE_NSS) - -#include "curl_md4.h" +#if defined(USE_NSS) #include "nssg.h" -#include <nss.h> -#include <pk11pub.h> -#include <hasht.h> -#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 - -#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 -#include "curl_ntlm_core.h" - /* 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" - -#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; - (void)handle; - 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) +CURLcode Curl_input_ntlm(struct connectdata *conn, + bool proxy, /* if proxy or not */ + const char *header) /* rest of the www-authenticate: + header */ { - 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. + /* point to the correct struct with this */ + struct ntlmdata *ntlm; + CURLcode result = CURLE_OK; - 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 }; +#ifdef USE_NSS + result = Curl_nss_force_init(conn->data); + if(result) + return result; #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; + ntlm = proxy ? &conn->proxyntlm : &conn->ntlm; -#if defined(CURL_DISABLE_VERBOSE_STRINGS) || defined(USE_WINDOWS_SSPI) - (void)data; -#endif + /* skip initial whitespaces */ + while(*header && ISSPACE(*header)) + header++; - error = Curl_base64_decode(header, &buffer, &size); - if(error) - return error; + if(checkprefix("NTLM", header)) { + header += strlen("NTLM"); - if(!buffer) { - infof(data, "NTLM handshake failure (unhandled condition)\n"); - return CURLE_REMOTE_ACCESS_DENIED; - } + while(*header && ISSPACE(*header)) + header++; -#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; - } + if(*header) { + result = Curl_ntlm_decode_type2_message(conn->data, header, ntlm); + if(CURLE_OK != result) + return result; - 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); + ntlm->state = NTLMSTATE_TYPE2; /* We got a type-2 message */ + } + else { + if(ntlm->state >= NTLMSTATE_TYPE1) { + infof(conn->data, "NTLM handshake failure (internal error)\n"); + return CURLE_REMOTE_ACCESS_DENIED; + } - return CURLE_OK; -} - -#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; + ntlm->state = NTLMSTATE_TYPE1; /* We should send away a type-1 */ + } } - 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'; - } + return result; } -#endif /* - * Curl_ntlm_create_type1_message() - * - * This is used to generate an already encoded NTLM type-1 message ready - * for 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/out] - The ntlm data struct being used and modified. - * outptr [in/out] - The adress where a pointer to newly allocated memory - * holding the result will be stored upon completion. - * - * Returns CURLE_OK on success. + * This is for creating ntlm header output */ -CURLcode Curl_ntlm_create_type1_message(const char *userp, - const char *passwdp, - struct ntlmdata *ntlm, - char **outptr) +CURLcode Curl_output_ntlm(struct connectdata *conn, + bool proxy) { - /* 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 - */ - - unsigned char ntlmbuf[NTLM_BUFSIZE]; - size_t base64_sz = 0; - size_t size; - -#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; + char *base64 = NULL; + CURLcode error; - 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; - } + /* point to the address of the pointer that holds the string to send to the + server, which is for a plain host or for a HTTP proxy */ + char **allocuserpwd; - ntlm->has_handles = 1; - size = buf.cbBuffer; + /* point to the name and password for this */ + const char *userp; + const char *passwdp; -#else + /* point to the correct struct with this */ + struct ntlmdata *ntlm; + struct auth *authp; - 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 with binary blob encoded into base64 */ - return Curl_base64_encode(NULL, (char *)ntlmbuf, size, outptr, &base64_sz); -} + DEBUGASSERT(conn); + DEBUGASSERT(conn->data); -/* - * Curl_ntlm_create_type3_message() - * - * This is used to generate an already encoded NTLM type-3 message ready - * for 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/out] - The ntlm data struct being used and modified. - * outptr [in/out] - The adress where a pointer to newly allocated memory - * holding the result will be stored upon completion. - * - * Returns CURLE_OK on success. - */ -CURLcode Curl_ntlm_create_type3_message(struct SessionHandle *data, - const char *userp, - const char *passwdp, - struct ntlmdata *ntlm, - char **outptr) -{ - /* 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 - */ - - unsigned char ntlmbuf[NTLM_BUFSIZE]; - size_t base64_sz = 0; - 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 */ +#ifdef USE_NSS + if(CURLE_OK != Curl_nss_force_init(conn->data)) + return CURLE_OUT_OF_MEMORY; #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; + if(proxy) { + allocuserpwd = &conn->allocptr.proxyuserpwd; + userp = conn->proxyuser; + passwdp = conn->proxypasswd; + ntlm = &conn->proxyntlm; + authp = &conn->data->state.authproxy; } 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; + allocuserpwd = &conn->allocptr.userpwd; + userp = conn->user; + passwdp = conn->passwd; + ntlm = &conn->ntlm; + authp = &conn->data->state.authhost; } + authp->done = FALSE; -#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 + /* not set means empty */ + if(!userp) + userp = ""; - /* 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 */ - if(CURLE_OUT_OF_MEMORY == - Curl_ntlm_core_mk_nt_hash(data, passwdp, ntbuffer)) - return CURLE_OUT_OF_MEMORY; - Curl_ntlm_core_lm_resp(ntbuffer, md5sum, ntresp); + if(!passwdp) + passwdp = ""; - /* End of NTLM2 Session code */ +#ifdef USE_WINDOWS_SSPI + if(s_hSecDll == NULL) { + /* not thread safe and leaks - use curl_global_init() to avoid */ + CURLcode err = Curl_sspi_global_init(); + if(s_hSecDll == NULL) + return err; + } +#endif + + switch(ntlm->state) { + case NTLMSTATE_TYPE1: + default: /* for the weird cases we (re)start here */ + /* Create a type-1 message */ + error = Curl_ntlm_create_type1_message(userp, passwdp, ntlm, &base64); + if(error) + return error; + + if(base64) { + Curl_safefree(*allocuserpwd); + *allocuserpwd = aprintf("%sAuthorization: NTLM %s\r\n", + proxy ? "Proxy-" : "", + base64); + DEBUG_OUT(fprintf(stderr, "**** Header %s\n ", *allocuserpwd)); + free(base64); + } + break; + + case NTLMSTATE_TYPE2: + /* We already received the type-2 message, create a type-3 message */ + error = Curl_ntlm_create_type3_message(conn->data, userp, passwdp, + ntlm, &base64); + if(error) + return error; + + if(base64) { + Curl_safefree(*allocuserpwd); + *allocuserpwd = aprintf("%sAuthorization: NTLM %s\r\n", + proxy ? "Proxy-" : "", + base64); + DEBUG_OUT(fprintf(stderr, "**** %s\n ", *allocuserpwd)); + free(base64); + + ntlm->state = NTLMSTATE_TYPE3; /* we send a type-3 */ + authp->done = TRUE; + } + break; + + case NTLMSTATE_TYPE3: + /* connection is already authenticated, + * don't send a header in future requests */ + if(*allocuserpwd) { + free(*allocuserpwd); + *allocuserpwd = NULL; + } + authp->done = TRUE; + break; } - else -#endif - { -#if USE_NTRESPONSES - unsigned char ntbuffer[0x18]; -#endif - unsigned char lmbuffer[0x18]; - -#if USE_NTRESPONSES - if(CURLE_OUT_OF_MEMORY == - Curl_ntlm_core_mk_nt_hash(data, passwdp, ntbuffer)) - return CURLE_OUT_OF_MEMORY; - Curl_ntlm_core_lm_resp(ntbuffer, &ntlm->nonce[0], ntresp); -#endif - - Curl_ntlm_core_mk_lm_hash(data, passwdp, lmbuffer); - Curl_ntlm_core_lm_resp(lmbuffer, &ntlm->nonce[0], lmresp); - /* A safer but less compatible alternative is: - * Curl_ntlm_core_lm_resp(ntbuffer, &ntlm->nonce[0], lmresp); - * See http://davenport.sourceforge.net/ntlm.html#ntlmVersion2 */ - } + return CURLE_OK; +} - 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, +void Curl_http_ntlm_cleanup(struct connectdata *conn) +{ +#ifdef USE_WINDOWS_SSPI + Curl_ntlm_sspi_cleanup(&conn->ntlm); + Curl_ntlm_sspi_cleanup(&conn->proxyntlm); +#elif defined(NTLM_WB_ENABLED) + Curl_ntlm_wb_cleanup(conn); #else - 0x0, 0x0, - 0x0, 0x0, - 0x0, 0x0, - 0x0, 0x0, + (void)conn; #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 with binary blob encoded into base64 */ - return Curl_base64_encode(NULL, (char *)ntlmbuf, size, outptr, &base64_sz); } #endif /* USE_NTLM */ |