diff options
Diffstat (limited to 'security/nss/cmd/ssltap/ssltap.c')
| -rw-r--r-- | security/nss/cmd/ssltap/ssltap.c | 1339 |
1 files changed, 0 insertions, 1339 deletions
diff --git a/security/nss/cmd/ssltap/ssltap.c b/security/nss/cmd/ssltap/ssltap.c deleted file mode 100644 index 70c77ce31..000000000 --- a/security/nss/cmd/ssltap/ssltap.c +++ /dev/null @@ -1,1339 +0,0 @@ -/* - * The contents of this file are subject to the Mozilla Public - * License Version 1.1 (the "License"); you may not use this file - * except in compliance with the License. You may obtain a copy of - * the License at http://www.mozilla.org/MPL/ - * - * Software distributed under the License is distributed on an "AS - * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or - * implied. See the License for the specific language governing - * rights and limitations under the License. - * - * The Original Code is the Netscape security libraries. - * - * The Initial Developer of the Original Code is Netscape - * Communications Corporation. Portions created by Netscape are - * Copyright (C) 1994-2000 Netscape Communications Corporation. All - * Rights Reserved. - * - * Contributor(s): - * - * Alternatively, the contents of this file may be used under the - * terms of the GNU General Public License Version 2 or later (the - * "GPL"), in which case the provisions of the GPL are applicable - * instead of those above. If you wish to allow use of your - * version of this file only under the terms of the GPL and not to - * allow others to use your version of this file under the MPL, - * indicate your decision by deleting the provisions above and - * replace them with the notice and other provisions required by - * the GPL. If you do not delete the provisions above, a recipient - * may use your version of this file under either the MPL or the - * GPL. - */ - -/* - * ssltap.c - * - * Version 1.0 : Frederick Roeber : 11 June 1997 - * Version 2.0 : Steve Parkinson : 13 November 1997 - * Version 3.0 : Nelson Bolyard : 22 July 1998 - * Version 3.1 : Nelson Bolyard : 24 May 1999 - * - * changes in version 2.0: - * Uses NSPR20 - * Shows structure of SSL negotiation, if enabled. - * - * This "proxies" a socket connection (like a socks tunnel), but displays the - * data is it flies by. - * - * In the code, the 'client' socket is the one on the client side of the - * proxy, and the server socket is on the server side. - * - */ - -#include "nspr.h" -#include "plstr.h" -#include "secutil.h" -#include <memory.h> /* for memcpy, etc. */ -#include <string.h> -#include <time.h> - -#include "plgetopt.h" - -#define VERSIONSTRING "$Revision$ ($Date$) $Author$" - - -struct _DataBufferList; -struct _DataBuffer; - -typedef struct _DataBufferList { - struct _DataBuffer *first,*last; - int size; - int isEncrypted; -} DataBufferList; - -typedef struct _DataBuffer { - unsigned char *buffer; - int length; - int offset; /* offset of first good byte */ - struct _DataBuffer *next; -} DataBuffer; - - -DataBufferList - clientstream = {NULL, NULL, 0, 0}, - serverstream = {NULL, NULL, 0, 0}; - -struct sslhandshake { - PRUint8 type; - PRUint32 length; -}; - -typedef struct _SSLRecord { - PRUint8 type; - PRUint8 ver_maj,ver_min; - - PRUint8 length[2]; -} SSLRecord; - -typedef struct _ClientHelloV2 { - PRUint8 length[2]; - PRUint8 type; - PRUint8 version[2]; - PRUint8 cslength[2]; - PRUint8 sidlength[2]; - PRUint8 rndlength[2]; - PRUint8 csuites[1]; -} ClientHelloV2; - -typedef struct _ServerHelloV2 { - PRUint8 length[2]; - PRUint8 type; - PRUint8 sidhit; - PRUint8 certtype; - PRUint8 version[2]; - PRUint8 certlength[2]; - PRUint8 cslength[2]; - PRUint8 cidlength[2]; -} ServerHelloV2; - -typedef struct _ClientMasterKeyV2 { - PRUint8 length[2]; - PRUint8 type; - - PRUint8 cipherkind[3]; - PRUint8 clearkey[2]; - PRUint8 secretkey[2]; - -} ClientMasterKeyV2; - - - -#define TAPBUFSIZ 16384 - -#define DEFPORT 1924 -#include <ctype.h> - -int hexparse=0; -int sslparse=0; -int sslhexparse=0; -int looparound=0; -int fancy=0; -int isV2Session=0; - -#define GET_SHORT(x) ((PRUint16)(((PRUint16)((PRUint8*)x)[0]) << 8) + ((PRUint16)((PRUint8*)x)[1])) -#define GET_24(x) ((PRUint32) ( \ - (((PRUint32)((PRUint8*)x)[0]) << 16) \ - + \ - (((PRUint32)((PRUint8*)x)[1]) << 8) \ - + \ - (((PRUint32)((PRUint8*)x)[2]) << 0) \ - ) ) - -void print_hex(int amt, unsigned char *buf); -void read_stream_bytes(unsigned char *d, DataBufferList *db, int length); - -void myhalt(int dblsize,int collectedsize) { - - while(1) ; - -} - -const char *get_error_text(int error) { - switch (error) { - case PR_IO_TIMEOUT_ERROR: - return "Timeout"; - break; - case PR_CONNECT_REFUSED_ERROR: - return "Connection refused"; - break; - case PR_NETWORK_UNREACHABLE_ERROR: - return "Network unreachable"; - break; - case PR_BAD_ADDRESS_ERROR: - return "Bad address"; - break; - case PR_CONNECT_RESET_ERROR: - return "Connection reset"; - break; - case PR_PIPE_ERROR: - return "Pipe error"; - break; - } - - return ""; -} - - - - - -void check_integrity(DataBufferList *dbl) { - DataBuffer *db; - int i; - - db = dbl->first; - i =0; - while (db) { - i+= db->length - db->offset; - db = db->next; - } - if (i != dbl->size) { - myhalt(dbl->size,i); - } -} - -/* Free's the DataBuffer at the head of the list and returns the pointer - * to the new head of the list. - */ -DataBuffer * -free_head(DataBufferList *dbl) -{ - DataBuffer *db = dbl->first; - PR_ASSERT(db->offset >= db->length); - if (db->offset >= db->length) { - dbl->first = db->next; - if (dbl->first == NULL) { - dbl->last = NULL; - } - PR_Free(db->buffer); - PR_Free(db); - db = dbl->first; - } - return db; -} - -void -read_stream_bytes(unsigned char *d, DataBufferList *dbl, int length) { - int copied = 0; - DataBuffer *db = dbl->first; - - if (!db) { - PR_fprintf(PR_STDERR,"assert failed - dbl->first is null\n"); - exit(8); - } - while (length) { - int toCopy; - /* find the number of bytes to copy from the head buffer */ - /* if there's too many in this buffer, then only copy 'length' */ - toCopy = PR_MIN(db->length - db->offset, length); - - memcpy(d + copied, db->buffer + db->offset, toCopy); - copied += toCopy; - db->offset += toCopy; - length -= toCopy; - dbl->size -= toCopy; - - /* if we emptied the head buffer */ - if (db->offset >= db->length) { - db = free_head(dbl); - } - } - - check_integrity(dbl); - -} - -void -flush_stream(DataBufferList *dbl) -{ - DataBuffer *db = dbl->first; - check_integrity(dbl); - while (db) { - db->offset = db->length; - db = free_head(dbl); - } - dbl->size = 0; - check_integrity(dbl); -} - - -const char * V2CipherString(int cs_int) { - char *cs_str; - cs_str = NULL; - switch (cs_int) { - - case 0x010080: cs_str = "SSL2/RSA/RC4-128/MD5"; break; - case 0x020080: cs_str = "SSL2/RSA/RC4-40/MD5"; break; - case 0x030080: cs_str = "SSL2/RSA/RC2CBC128/MD5"; break; - case 0x040080: cs_str = "SSL2/RSA/RC2CBC40/MD5"; break; - case 0x050080: cs_str = "SSL2/RSA/IDEA128CBC/MD5"; break; - case 0x060040: cs_str = "SSL2/RSA/DES56-CBC/MD5"; break; - case 0x0700C0: cs_str = "SSL2/RSA/3DES192EDE-CBC/MD5"; break; - - case 0x000001: cs_str = "SSL3/RSA/NULL/MD5"; break; - case 0x000002: cs_str = "SSL3/RSA/NULL/SHA"; break; - case 0x000003: cs_str = "SSL3/RSA/RC4-40/MD5"; break; - case 0x000004: cs_str = "SSL3/RSA/RC4-128/MD5"; break; - case 0x000005: cs_str = "SSL3/RSA/RC4-128/SHA"; break; - case 0x000006: cs_str = "SSL3/RSA/RC2CBC40/MD5"; break; - case 0x000007: cs_str = "SSL3/RSA/IDEA128CBC/SHA"; break; - case 0x000008: cs_str = "SSL3/RSA/DES40-CBC/SHA"; break; - case 0x000009: cs_str = "SSL3/RSA/DES56-CBC/SHA"; break; - case 0x00000A: cs_str = "SSL3/RSA/3DES192EDE-CBC/SHA"; break; - - case 0x00000B: cs_str = "SSL3/DH-DSS/DES40-CBC/SHA"; break; - case 0x00000C: cs_str = "SSL3/DH_DSS/DES56-CBC/SHA"; break; - case 0x00000D: cs_str = "SSL3/DH-DSS/DES192EDE3CBC/SHA"; break; - case 0x00000E: cs_str = "SSL3/DH-RSA/DES40-CBC/SHA"; break; - case 0x00000F: cs_str = "SSL3/DH_RSA/DES56-CBC/SHA"; break; - case 0x000010: cs_str = "SSL3/DH-RSA/3DES192EDE-CBC/SHA"; break; - - case 0x000011: cs_str = "SSL3/DHE-DSS/DES40-CBC/SHA"; break; - case 0x000012: cs_str = "SSL3/DHE_DSS/DES56-CBC/SHA"; break; - case 0x000013: cs_str = "SSL3/DHE-DSS/DES192EDE3CBC/SHA"; break; - case 0x000014: cs_str = "SSL3/DHE-RSA/DES40-CBC/SHA"; break; - case 0x000015: cs_str = "SSL3/DHE_RSA/DES56-CBC/SHA"; break; - case 0x000016: cs_str = "SSL3/DHE-RSA/3DES192EDE-CBC/SHA"; break; - - case 0x000017: cs_str = "SSL3/DH-anon/RC4-40/MD5"; break; - case 0x000018: cs_str = "SSL3/DH-anon/RC4-128/MD5"; break; - case 0x000019: cs_str = "SSL3/DH-anon/DES40-CBC/SHA"; break; - case 0x00001A: cs_str = "SSL3/DH-anon/DES56-CBC/SHA"; break; - case 0x00001B: cs_str = "SSL3/DH-anon/3DES192EDE-CBC/SHA"; break; - - case 0x00001C: cs_str = "SSL3/FORTEZZA-DMS/NULL/SHA"; break; - case 0x00001D: cs_str = "SSL3/FORTEZZA-DMS/FORTEZZA-CBC/SHA"; break; - case 0x00001E: cs_str = "SSL3/FORTEZZA-DMS/RC4-128/SHA"; break; - - case 0x000062: cs_str = "TLS/RSA_EXPORT1024/DES56_CBC/SHA"; break; - case 0x000064: cs_str = "TLS/RSA_EXPORT1024/RC4-56/SHA"; break; - case 0x000063: cs_str = "TLS/DHE-DSS_EXPORT1024/DES56-CBC/SHA"; break; - case 0x000065: cs_str = "TLS/DHE-DSS_EXPORT1024/RC4-56/SHA"; break; - case 0x000066: cs_str = "TLS/DHE-DSS/RC4-128/SHA"; break; - - case 0x00ffe1: cs_str = "SSL3/RSA-FIPS/DES56-CBC/SHA"; break; - case 0x00ffe0: cs_str = "SSL3/RSA-FIPS/3DES192EDE-CBC/SHA"; break; - - default: cs_str = "????/????????/?????????/???"; break; - } - - return cs_str; -} - -void partial_packet(int thispacket, int size, int needed) -{ - PR_fprintf(PR_STDOUT,"(%u bytes", thispacket); - if (thispacket < needed) { - PR_fprintf(PR_STDOUT,", making %u", size); - } - PR_fprintf(PR_STDOUT," of %u", needed); - if (size > needed) { - PR_fprintf(PR_STDOUT,", with %u left over", size - needed); - } - PR_fprintf(PR_STDOUT,")\n"); -} - -char * get_time_string(void) -{ - struct tm *tm; - char *cp; - char *eol; - time_t tt; - - time(&tt); -#if 0 - tm = localtime(&tt); - cp = asctime(tm); -#else - cp = ctime(&tt); -#endif - eol = strchr(cp, '\n'); - if (eol) - *eol = 0; - return cp; -} - -void print_sslv2(DataBufferList *s, unsigned char *tbuf, unsigned int alloclen) -{ - ClientHelloV2 *chv2; - ServerHelloV2 *shv2; - unsigned char *pos; - unsigned int p; - unsigned int q; - PRUint32 len; - - chv2 = (ClientHelloV2 *)tbuf; - shv2 = (ServerHelloV2 *)tbuf; - if (s->isEncrypted) { - PR_fprintf(PR_STDOUT," [ssl2] Encrypted {...}\n"); - return; - } - PR_fprintf(PR_STDOUT," [%s]", get_time_string() ); - switch(chv2->type) { - case 1: - PR_fprintf(PR_STDOUT," [ssl2] ClientHelloV2 {\n"); - PR_fprintf(PR_STDOUT," version = {0x%02x, 0x%02x}\n", - (PRUint32)chv2->version[0],(PRUint32)chv2->version[1]); - PR_fprintf(PR_STDOUT," cipher-specs-length = %d (0x%02x)\n", - (PRUint32)(GET_SHORT((chv2->cslength))), - (PRUint32)(GET_SHORT((chv2->cslength)))); - PR_fprintf(PR_STDOUT," sid-length = %d (0x%02x)\n", - (PRUint32)(GET_SHORT((chv2->sidlength))), - (PRUint32)(GET_SHORT((chv2->sidlength)))); - PR_fprintf(PR_STDOUT," challenge-length = %d (0x%02x)\n", - (PRUint32)(GET_SHORT((chv2->rndlength))), - (PRUint32)(GET_SHORT((chv2->rndlength)))); - PR_fprintf(PR_STDOUT," cipher-suites = { \n"); - for (p=0;p<GET_SHORT((chv2->cslength));p+=3) { - const char *cs_str=NULL; - PRUint32 cs_int=0; - cs_int = GET_24((&chv2->csuites[p])); - cs_str = V2CipherString(cs_int); - - PR_fprintf(PR_STDOUT," (0x%06x) %s\n", - cs_int, cs_str); - } - q = p; - PR_fprintf(PR_STDOUT," }\n"); - if (chv2->sidlength) { - PR_fprintf(PR_STDOUT," session-id = { "); - for (p=0;p<GET_SHORT((chv2->sidlength));p+=2) { - PR_fprintf(PR_STDOUT,"0x%04x ",(PRUint32)(GET_SHORT((&chv2->csuites[p+q])))); - } - } - q += p; - PR_fprintf(PR_STDOUT,"}\n"); - if (chv2->rndlength) { - PR_fprintf(PR_STDOUT," challenge = { "); - for (p=0;p<GET_SHORT((chv2->rndlength));p+=2) { - PR_fprintf(PR_STDOUT,"0x%04x ",(PRUint32)(GET_SHORT((&chv2->csuites[p+q])))); - } - PR_fprintf(PR_STDOUT,"}\n"); - } - PR_fprintf(PR_STDOUT,"}\n"); - break; - /* end of V2 CLientHello Parsing */ - - case 2: /* Client Master Key */ - { - const char *cs_str=NULL; - PRUint32 cs_int=0; - ClientMasterKeyV2 *cmkv2; - cmkv2 = (ClientMasterKeyV2 *)chv2; - isV2Session = 1; - - PR_fprintf(PR_STDOUT," [ssl2] ClientMasterKeyV2 { \n"); - - cs_int = GET_24(&cmkv2->cipherkind[0]); - cs_str = V2CipherString(cs_int); - PR_fprintf(PR_STDOUT," cipher-spec-chosen = (0x%06x) %s\n", - cs_int, cs_str); - - PR_fprintf(PR_STDOUT," clear-portion = %d bits\n", - 8*(PRUint32)(GET_SHORT((cmkv2->clearkey)))); - - PR_fprintf(PR_STDOUT," }\n"); - clientstream.isEncrypted = 1; - serverstream.isEncrypted = 1; - } - break; - - - case 3: - PR_fprintf(PR_STDOUT," [ssl2] Client Finished V2 {...}\n"); - isV2Session = 1; - break; - - - case 4: /* V2 Server Hello */ - isV2Session = 1; - - PR_fprintf(PR_STDOUT," [ssl2] ServerHelloV2 {\n"); - PR_fprintf(PR_STDOUT," sid hit = {0x%02x}\n", - (PRUintn)shv2->sidhit); - PR_fprintf(PR_STDOUT," version = {0x%02x, 0x%02x}\n", - (PRUint32)shv2->version[0],(PRUint32)shv2->version[1]); - PR_fprintf(PR_STDOUT," cipher-specs-length = %d (0x%02x)\n", - (PRUint32)(GET_SHORT((shv2->cslength))), - (PRUint32)(GET_SHORT((shv2->cslength)))); - PR_fprintf(PR_STDOUT," sid-length = %d (0x%02x)\n", - (PRUint32)(GET_SHORT((shv2->cidlength))), - (PRUint32)(GET_SHORT((shv2->cidlength)))); - - pos = (unsigned char *)shv2; - pos += 2; /* skip length header */ - pos += 11; /* position pointer to Certificate data area */ - q = GET_SHORT(&shv2->certlength); - if (q >alloclen) { - goto eosh; - } - pos += q; /* skip certificate */ - - PR_fprintf(PR_STDOUT," cipher-suites = { "); - len = GET_SHORT((shv2->cslength)); - for (p = 0; p < len; p += 3) { - const char *cs_str=NULL; - PRUint32 cs_int=0; - cs_int = GET_24((pos+p)); - cs_str = V2CipherString(cs_int); - PR_fprintf(PR_STDOUT,"\n "); - PR_fprintf(PR_STDOUT,"(0x%06x) %s", cs_int, cs_str); - } - pos += len; - PR_fprintf(PR_STDOUT," }\n"); /* End of cipher suites */ - len = (PRUint32)GET_SHORT((shv2->cidlength)); - if (len) { - PR_fprintf(PR_STDOUT," connection-id = { "); - for (p = 0; p < len; p += 2) { - PR_fprintf(PR_STDOUT,"0x%04x ", (PRUint32)(GET_SHORT((pos + p)))); - } - PR_fprintf(PR_STDOUT," }\n"); /* End of connection id */ - } -eosh: - PR_fprintf(PR_STDOUT,"\n }\n"); /* end of ServerHelloV2 */ - if (shv2->sidhit) { - clientstream.isEncrypted = 1; - serverstream.isEncrypted = 1; - } - break; - - case 5: - PR_fprintf(PR_STDOUT," [ssl2] Server Verify V2 {...}\n"); - isV2Session = 1; - break; - - case 6: - PR_fprintf(PR_STDOUT," [ssl2] Server Finished V2 {...}\n"); - isV2Session = 1; - break; - - case 7: - PR_fprintf(PR_STDOUT," [ssl2] Request Certificate V2 {...}\n"); - isV2Session = 1; - break; - - case 8: - PR_fprintf(PR_STDOUT," [ssl2] Client Certificate V2 {...}\n"); - isV2Session = 1; - break; - - default: - PR_fprintf(PR_STDOUT," [ssl2] UnknownType 0x%02x {...}\n", - (PRUint32)chv2->type); - break; - } -} - - - - - - -void print_ssl3_handshake(unsigned char *tbuf, - unsigned int alloclen, - SSLRecord * sr) -{ - struct sslhandshake sslh; - unsigned char * hsdata; - int offset=0; - - PR_fprintf(PR_STDOUT," handshake {\n"); - - while (offset < alloclen) { - sslh.type = tbuf[offset]; - sslh.length = GET_24(tbuf+offset+1); - hsdata= &tbuf[offset+4]; - - if (sslhexparse) print_hex(4,tbuf+offset); - - PR_fprintf(PR_STDOUT," type = %d (",sslh.type); - switch(sslh.type) { - case 0: PR_fprintf(PR_STDOUT,"hello_request)\n"); break; - case 1: PR_fprintf(PR_STDOUT,"client_hello)\n"); break; - case 2: PR_fprintf(PR_STDOUT,"server_hello)\n"); break; - case 11: PR_fprintf(PR_STDOUT,"certificate)\n"); break; - case 12: PR_fprintf(PR_STDOUT,"server_key_exchange)\n"); break; - case 13: PR_fprintf(PR_STDOUT,"certificate_request)\n"); break; - case 14: PR_fprintf(PR_STDOUT,"server_hello_done)\n"); break; - case 15: PR_fprintf(PR_STDOUT,"certificate_verify)\n"); break; - case 16: PR_fprintf(PR_STDOUT,"client_key_exchange)\n"); break; - case 20: PR_fprintf(PR_STDOUT,"finished)\n"); break; - default: PR_fprintf(PR_STDOUT,"unknown)\n"); - } - - PR_fprintf(PR_STDOUT," length = %d (0x%06x)\n",sslh.length,sslh.length); - switch (sslh.type) { - - case 1: /* client hello */ - switch (sr->ver_maj) { - case 2: /* ssl version 2 */ - PR_fprintf(PR_STDOUT," ClientHelloV2 {...}\n"); - break; - case 3: /* ssl version 3 */ - { - int sidlength,pos,csuitelength,w; - PR_fprintf(PR_STDOUT," ClientHelloV3 {\n"); - PR_fprintf(PR_STDOUT," client_version = {%d, %d}\n", - (PRUint8)hsdata[0],(PRUint8)hsdata[1]); - PR_fprintf(PR_STDOUT," random = {...}\n"); - if (sslhexparse) print_hex(32,&hsdata[2]); - PR_fprintf(PR_STDOUT," session ID = {\n"); - sidlength = (int)hsdata[2+32]; - PR_fprintf(PR_STDOUT," length = %d\n",sidlength); - PR_fprintf(PR_STDOUT," contents = {..}\n"); - if (sslhexparse) print_hex(sidlength,&hsdata[2+32+1]); - PR_fprintf(PR_STDOUT," }\n"); - pos = 2+32+1+sidlength; - csuitelength = GET_SHORT((hsdata+pos)); - PR_fprintf(PR_STDOUT," cipher_suites[%d] = { \n", - csuitelength/2); - if (csuitelength%1) { - PR_fprintf(PR_STDOUT, - "*error in protocol - csuitelength shouldn't be odd*\n"); - } - - for (w=0; w<csuitelength; w+=2) { - const char *cs_str=NULL; - PRUint32 cs_int=0; - cs_int = GET_SHORT((hsdata+pos+2+w)); - cs_str = V2CipherString(cs_int); - - PR_fprintf(PR_STDOUT, - " (0x%04x) %s\n", cs_int, cs_str); - } - - /* for (w=0;w<csuitelength;w+=2) { - PR_fprintf(PR_STDOUT,"0x%04x ",GET_SHORT((hsdata+pos+2+w))); - } */ - - PR_fprintf(PR_STDOUT,"\n }\n"); - PR_fprintf(PR_STDOUT," }\n"); - - - - } /* end of ssl version 3 */ - break; - default: - PR_fprintf(PR_STDOUT," ClientHelloUndefinedVersion{}\n"); - } /* end of switch sr->ver_maj */ - break; - - case 2: /* server hello */ - { - int sidlength, pos; - const char *cs_str=NULL; - PRUint32 cs_int=0; - PR_fprintf(PR_STDOUT," ServerHello {\n"); - PR_fprintf(PR_STDOUT," server_version = {%d, %d}\n", - (PRUint8)hsdata[0],(PRUint8)hsdata[1]); - PR_fprintf(PR_STDOUT," random = {...}\n"); - if (sslhexparse) print_hex(32,&hsdata[2]); - PR_fprintf(PR_STDOUT," session ID = {\n"); - sidlength = (int)hsdata[2+32]; - PR_fprintf(PR_STDOUT," length = %d\n",sidlength); - PR_fprintf(PR_STDOUT," contents = {..}\n"); - if (sslhexparse) print_hex(sidlength,&hsdata[2+32+1]); - PR_fprintf(PR_STDOUT," }\n"); - pos = 2+32+1+sidlength; - cs_int = GET_SHORT((hsdata+pos)); - cs_str = V2CipherString(cs_int); - PR_fprintf(PR_STDOUT," cipher_suite = (0x%04x) %s\n", - cs_int, cs_str); - PR_fprintf(PR_STDOUT," }\n"); - } - break; - - - - case 11: /* certificate */ - { - PRFileDesc *cfd; - int pos; - int certslength; - int certlength; - int certbytesread = 0; - static int certFileNumber; - char certFileName[20]; - - PR_fprintf(PR_STDOUT," CertificateChain {\n"); - certslength = GET_24(hsdata); - PR_fprintf(PR_STDOUT," chainlength = %d (0x%04x)\n", - certslength,certslength); - pos = 3; - while (certbytesread < certslength) { - certlength = GET_24((hsdata+pos)); - pos += 3; - PR_fprintf(PR_STDOUT," Certificate {\n"); - PR_fprintf(PR_STDOUT," size = %d (0x%04x)\n", - certlength,certlength); - - PR_snprintf(certFileName, sizeof certFileName, "cert.%03d", - ++certFileNumber); - cfd = PR_Open(certFileName, PR_WRONLY|PR_CREATE_FILE, 0664); - if (!cfd) { - PR_fprintf(PR_STDOUT, - " data = { couldn't save file '%s' }\n", - certFileName); - } else { - PR_Write(cfd, (hsdata+pos), certlength); - PR_fprintf(PR_STDOUT, - " data = { saved in file '%s' }\n", - certFileName); - PR_Close(cfd); - } - - PR_fprintf(PR_STDOUT," }\n"); - pos += certlength; - certbytesread += certlength+3; - } - PR_fprintf(PR_STDOUT," }\n"); - } - break; - - case 13: /* certificate request */ - if (sslhexparse) { - PR_fprintf(PR_STDOUT," CertificateRequest {\n"); - print_hex(sslh.length, hsdata); - PR_fprintf(PR_STDOUT," }\n"); - } - break; - - case 16: /* client key exchange */ - { - PR_fprintf(PR_STDOUT," ClientKeyExchange {\n"); - PR_fprintf(PR_STDOUT," message = {...}\n"); - PR_fprintf(PR_STDOUT," }\n"); - } - break; - - } /* end of switch sslh.type */ - offset += sslh.length + 4; /* +4 because of length (3 bytes) and type (1 byte) */ - } /* while */ - PR_fprintf(PR_STDOUT," }\n"); -} - - -void print_ssl(DataBufferList *s, int length, unsigned char *buffer) -{ - /* -------------------------------------------------------- */ - /* first, create a new buffer object for this piece of data. */ - - DataBuffer *db; - int i,l; - - if (s->size == 0 && length > 0 && buffer[0] >= 32 && buffer[0] < 128) { - /* Not an SSL record, treat entire buffer as plaintext */ - PR_Write(PR_STDOUT,buffer,length); - return; - } - - - check_integrity(s); - - i = 0; - l = length; - - db = PR_NEW(struct _DataBuffer); - - db->buffer = (unsigned char*)PR_Malloc(length); - db->length = length; - db->offset = 0; - memcpy(db->buffer, buffer, length); - db->next = NULL; - - /* now, add it to the stream */ - - if (s->last != NULL) s->last->next = db; - s->last = db; - s->size += length; - if (s->first == NULL) s->first = db; - - check_integrity(s); - - /*------------------------------------------------------- */ - /* now we look at the stream to see if we have enough data to - decode */ - - while (s->size > 0 ) { - unsigned char *tbuf = NULL; - - SSLRecord sr; - unsigned alloclen; - unsigned recordsize; - - check_integrity(s); - - if ( s->first == NULL) { - PR_fprintf(PR_STDOUT,"ERROR: s->first is null\n"); - exit(9); - } - - /* in the case of an SSL 2 client-hello (which is all ssltap supports) */ - /* will have the high-bit set, whereas an SSL 3 client-hello will not */ - /* SSL2 can also send records that begin with the high bit clear. - * This code will incorrectly handle them. XXX - */ - if (isV2Session || s->first->buffer[s->first->offset] & 0x80) { - /* it's an SSL 2 packet */ - unsigned char lenbuf[3]; - - /* first, we check if there's enough data for it to be an SSL2-type - * record. What a pain.*/ - if (s->size < sizeof lenbuf) { - partial_packet(length, s->size, sizeof lenbuf); - return; - } - - /* read the first two bytes off the stream. */ - read_stream_bytes(lenbuf, s, sizeof(lenbuf)); - alloclen = ((unsigned int)(lenbuf[0] & 0x7f) << 8) + lenbuf[1] + - ((lenbuf[0] & 0x80) ? 2 : 3); - PR_fprintf(PR_STDOUT, "alloclen = %u bytes\n", alloclen); - - /* put 'em back on the head of the stream. */ - db = PR_NEW(struct _DataBuffer); - - db->length = sizeof lenbuf; - db->buffer = (unsigned char*) PR_Malloc(db->length); - db->offset = 0; - memcpy(db->buffer, lenbuf, sizeof lenbuf); - - db->next = s->first; - s->first = db; - if (s->last == NULL) - s->last = db; - s->size += db->length; - - /* if there wasn't enough, go back for more. */ - if (s->size < alloclen) { - check_integrity(s); - partial_packet(length, s->size, alloclen); - return; - } - partial_packet(length, s->size, alloclen); - - /* read in the whole record. */ - tbuf = PR_Malloc(alloclen); - read_stream_bytes(tbuf, s, alloclen); - - print_sslv2(s, tbuf, alloclen); - PR_FREEIF(tbuf); - check_integrity(s); - - continue; - } - - /***********************************************************/ - /* It's SSL v3 */ - /***********************************************************/ - check_integrity(s); - - if (s->size < sizeof(SSLRecord)) { - partial_packet(length, s->size, sizeof(SSLRecord)); - return; - } - - read_stream_bytes((unsigned char *)&sr, s, sizeof sr); - - /* we have read the stream bytes. Look at the length of - the ssl record. If we don't have enough data to satisfy this - request, then put the bytes we just took back at the head - of the queue */ - recordsize = GET_SHORT(sr.length); - - if (recordsize > s->size) { - db = PR_NEW(struct _DataBuffer); - - db->length = sizeof sr; - db->buffer = (unsigned char*) PR_Malloc(db->length); - db->offset = 0; - memcpy(db->buffer, &sr, sizeof sr); - db->next = s->first; - - /* now, add it back on to the head of the stream */ - - s->first = db; - if (s->last == NULL) - s->last = db; - s->size += db->length; - - check_integrity(s); - partial_packet(length, s->size, recordsize); - return; - } - partial_packet(length, s->size, recordsize); - - - PR_fprintf(PR_STDOUT,"SSLRecord { [%s]\n", get_time_string() ); - if (sslhexparse) { - print_hex(5,(unsigned char*)&sr); - } - - check_integrity(s); - - PR_fprintf(PR_STDOUT," type = %d (",sr.type); - switch(sr.type) { - case 20 : - PR_fprintf(PR_STDOUT,"change_cipher_spec)\n"); - break; - case 21 : - PR_fprintf(PR_STDOUT,"alert)\n"); - break; - case 22 : - PR_fprintf(PR_STDOUT,"handshake)\n"); - break; - case 23 : - PR_fprintf(PR_STDOUT,"application_data)\n"); - break; - default: - PR_fprintf(PR_STDOUT,"unknown)\n"); - break; - } - PR_fprintf(PR_STDOUT," version = { %d,%d }\n", - (PRUint32)sr.ver_maj,(PRUint32)sr.ver_min); - PR_fprintf(PR_STDOUT," length = %d (0x%x)\n", - (PRUint32)GET_SHORT(sr.length), (PRUint32)GET_SHORT(sr.length)); - - - alloclen = recordsize; - PR_ASSERT(s->size >= alloclen); - if (s->size >= alloclen) { - tbuf = (unsigned char*) PR_Malloc(alloclen); - read_stream_bytes(tbuf, s, alloclen); - - if (s->isEncrypted) { - PR_fprintf(PR_STDOUT," < encrypted >\n"); - } else - - switch(sr.type) { - case 20 : /* change_cipher_spec */ - if (sslhexparse) print_hex(alloclen,tbuf); - s->isEncrypted = 1; /* mark to say we can only dump hex form now on */ - break; - - case 21 : /* alert */ - switch(tbuf[0]) { - case 1: PR_fprintf(PR_STDOUT, " warning: "); break; - case 2: PR_fprintf(PR_STDOUT, " fatal: "); break; - default: PR_fprintf(PR_STDOUT, " unknown level %d: ", tbuf[0]); break; - } - - switch(tbuf[1]) { - case 0: PR_fprintf(PR_STDOUT, "close notify\n"); break; - case 10: PR_fprintf(PR_STDOUT, "unexpected message\n"); break; - case 20: PR_fprintf(PR_STDOUT, "bad record mac\n"); break; - case 21: PR_fprintf(PR_STDOUT, "decryption failed\n"); break; - case 22: PR_fprintf(PR_STDOUT, "record overflow\n"); break; - case 30: PR_fprintf(PR_STDOUT, "decompression failure\n"); break; - case 40: PR_fprintf(PR_STDOUT, "handshake failure\n"); break; - case 41: PR_fprintf(PR_STDOUT, "no certificate\n"); break; - case 42: PR_fprintf(PR_STDOUT, "bad certificate\n"); break; - case 43: PR_fprintf(PR_STDOUT, "unsupported certificate\n"); break; - case 44: PR_fprintf(PR_STDOUT, "certificate revoked\n"); break; - case 45: PR_fprintf(PR_STDOUT, "certificate expired\n"); break; - case 46: PR_fprintf(PR_STDOUT, "certificate unknown\n"); break; - case 47: PR_fprintf(PR_STDOUT, "illegal parameter\n"); break; - case 48: PR_fprintf(PR_STDOUT, "unknown CA\n"); break; - case 49: PR_fprintf(PR_STDOUT, "access denied\n"); break; - case 50: PR_fprintf(PR_STDOUT, "decode error\n"); break; - case 51: PR_fprintf(PR_STDOUT, "decrypt error\n"); break; - case 60: PR_fprintf(PR_STDOUT, "export restriction\n"); break; - case 70: PR_fprintf(PR_STDOUT, "protocol version\n"); break; - case 71: PR_fprintf(PR_STDOUT, "insufficient security\n"); break; - case 80: PR_fprintf(PR_STDOUT, "internal error\n"); break; - case 90: PR_fprintf(PR_STDOUT, "user canceled\n"); break; - case 100: PR_fprintf(PR_STDOUT, "no renegotiation\n"); break; - default: PR_fprintf(PR_STDOUT, "unknown error %d\n", tbuf[1]); break; - } - - if (sslhexparse) print_hex(alloclen,tbuf); - break; - - case 22 : /* handshake */ - print_ssl3_handshake( tbuf, alloclen, &sr ); - break; - - case 23 : /* application data */ - default: - print_hex(alloclen,tbuf); - break; - } - } - PR_fprintf(PR_STDOUT,"}\n"); - PR_FREEIF(tbuf); - check_integrity(s); - } -} - -void print_hex(int amt, unsigned char *buf) { - int i,j,k; - char *string = (char*)PR_Malloc(5000); - char t[20]; - - - for(i=0;i<amt;i++) { - t[1] =0; - - if (i%16 ==0) { /* if we are at the beginning of a line */ - PR_fprintf(PR_STDOUT,"%4x:",i); /* print the line number */ - strcpy(string,""); - } - - if (i%4 == 0) { - PR_fprintf(PR_STDOUT," "); - } - - t[0] = buf[i]; - - if (!isprint(t[0])) { - t[0] = '.'; - } - if (fancy) { - switch (t[0]) { - case '<': - strcpy(t,"<"); - break; - case '>': - strcpy(t,">"); - break; - case '&': - strcpy(t,"&"); - break; - } - } - strcat(string,t); - - PR_fprintf(PR_STDOUT,"%02x ",(PRUint8) buf[i]); - - /* if we've reached the end of the line - add the string */ - if (i%16 == 15) PR_fprintf(PR_STDOUT," | %s\n",string); - } - /* we reached the end of the buffer,*/ - /* do we have buffer left over? */ - j = i%16; - if (j > 0) { - for (k=0;k<(16-j);k++) PR_fprintf(PR_STDOUT," "); - PR_fprintf(PR_STDOUT," |%s\n",string); - } - PR_Free(string); -} - -void Usage(void) { - PR_fprintf(PR_STDERR, "SSLTAP (C) 1997, 1998 Netscape Communications Corporation.\n"); - PR_fprintf(PR_STDERR, "Usage: ssltap [-vhfsxl] [-p port] hostname:port\n"); - PR_fprintf(PR_STDERR, " -v [prints version string]\n"); - PR_fprintf(PR_STDERR, " -h [outputs hex instead of ASCII]\n"); - PR_fprintf(PR_STDERR, " -f [turn on Fancy HTML coloring]\n"); - PR_fprintf(PR_STDERR, " -s [turn on SSL decoding]\n"); - PR_fprintf(PR_STDERR, " -x [turn on extra SSL hex dumps]\n"); - PR_fprintf(PR_STDERR, " -p port [specify rendezvous port (default 1924)]\n"); - PR_fprintf(PR_STDERR, " -l [loop - continue to wait for more connections]\n"); - - -} - -void -showErr(const char * msg) { - PRErrorCode err = PR_GetError(); - const char * errString; - - if (err == PR_UNKNOWN_ERROR) - err = PR_CONNECT_RESET_ERROR; /* bug in NSPR. */ - errString = SECU_Strerror(err); - - if (!errString) - errString = "(no text available)"; - PR_fprintf(PR_STDERR, "Error %d: %s: %s", err, errString, msg); -} - -int main(int argc, char *argv[]) -{ - char *hostname; - PRUint16 rendport=DEFPORT,port; - PRHostEnt hp; - PRStatus r; - PRNetAddr na_client,na_server,na_rend; - PRFileDesc *s_server,*s_client,*s_rend; /*rendezvous */ - char netdbbuf[PR_NETDB_BUF_SIZE]; - int c_count=0; - PLOptState *optstate; - PLOptStatus status; - - optstate = PL_CreateOptState(argc,argv,"fvxhslp:"); - while ((status = PL_GetNextOpt(optstate)) == PL_OPT_OK) { - switch (optstate->option) { - case 'f': - fancy++; - break; - case 'h': - hexparse++; - break; - case 'v': - PR_fprintf(PR_STDOUT,"Version: %s\n",VERSIONSTRING); - break; - case 's': - sslparse++; - break; - case 'x': - sslhexparse++; - break; - case 'l': - looparound++; - break; - case 'p': - rendport = atoi(optstate->value); - break; - case '\0': - hostname = PL_strdup(optstate->value); - } - } - if (status == PL_OPT_BAD) - Usage(); - - if (fancy) { - if (!hexparse && !sslparse) { - PR_fprintf(PR_STDERR, -"Note: use of -f without -s or -h not recommended, \n" -"as the output looks a little strange. It may be useful, however\n"); - } - } - - if(! hostname ) Usage(), exit(2); - - { - char *colon = (char *)strchr(hostname, ':'); - if (!colon) { - PR_fprintf(PR_STDERR, - "You must specify the host AND port you wish to connect to\n"); - Usage(), exit(3); - } - port = atoi(&colon[1]); - *colon = '\0'; - - if (port == 0) { - PR_fprintf(PR_STDERR, "Port must be a nonzero number.\n"); - exit(4); - } - } - - /* find the 'server' IP address so we don't have to look it up later */ - - if (fancy) { - PR_fprintf(PR_STDOUT,"<HTML><HEAD><TITLE>SSLTAP output</TITLE></HEAD>\n"); - PR_fprintf(PR_STDOUT,"<BODY><PRE>\n"); - } - PR_fprintf(PR_STDERR,"Looking up \"%s\"...\n", hostname); - r = PR_GetHostByName(hostname,netdbbuf,PR_NETDB_BUF_SIZE,&hp); - if (r) { - showErr("Host Name lookup failed\n"); - exit(5); - } - - PR_EnumerateHostEnt(0,&hp,0,&na_server); - PR_InitializeNetAddr(PR_IpAddrNull,port,&na_server); - /* set up the port which the client will connect to */ - - r = PR_InitializeNetAddr(PR_IpAddrAny,rendport,&na_rend); - if (r == PR_FAILURE) { - PR_fprintf(PR_STDERR, - "PR_InitializeNetAddr(,%d,) failed with error %d\n",PR_GetError()); - exit(0); - } - - - s_rend = PR_NewTCPSocket(); - if (!s_rend) { - showErr("Couldn't create socket\n"); - exit(6); - } - - if (PR_Bind(s_rend, &na_rend )) { - PR_fprintf(PR_STDERR,"Couldn't bind to port %d (error %d)\n",rendport, PR_GetError()); - exit(-1); - } - - if ( PR_Listen(s_rend, 5)) { - showErr("Couldn't listen\n"); - exit(-1); - } - - PR_fprintf(PR_STDERR,"Proxy socket ready and listening\n"); - do { /* accept one connection and process it. */ - PRPollDesc pds[2]; - - s_client = PR_Accept(s_rend,&na_client,PR_SecondsToInterval(3600)); - if (s_client == NULL) { - showErr("accept timed out\n"); - exit(7); - } - - s_server = PR_NewTCPSocket(); - if (s_server == NULL) { - showErr("couldn't open new socket to connect to server \n"); - exit(8); - } - - r = PR_Connect(s_server,&na_server,PR_SecondsToInterval(5)); - - if ( r == PR_FAILURE ) - { - showErr("Couldn't connect\n"); - return -1; - } - - if (looparound) { - if (fancy) PR_fprintf(PR_STDOUT,"<p><HR><H2>"); - PR_fprintf(PR_STDOUT,"Connection #%d [%s]\n", c_count+1, - get_time_string()); - if (fancy) PR_fprintf(PR_STDOUT,"</H2>"); - } - - - PR_fprintf(PR_STDOUT,"Connected to %s:%d\n", hostname, port); - -#define PD_C 0 -#define PD_S 1 - - pds[PD_C].fd = s_client; - pds[PD_S].fd = s_server; - pds[PD_C].in_flags = PR_POLL_READ; - pds[PD_S].in_flags = PR_POLL_READ; - - /* make sure the new connections don't start out encrypted. */ - clientstream.isEncrypted = 0; - serverstream.isEncrypted = 0; - isV2Session = 0; - - while( (pds[PD_C].in_flags & PR_POLL_READ) != 0 || - (pds[PD_S].in_flags & PR_POLL_READ) != 0 ) - { /* Handle all messages on the connection */ - PRInt32 amt; - PRInt32 wrote; - unsigned char buffer[ TAPBUFSIZ ]; - - amt = PR_Poll(pds,2,PR_INTERVAL_NO_TIMEOUT); - if (amt <= 0) { - if (amt) - showErr( "PR_Poll failed.\n"); - else - showErr( "PR_Poll timed out.\n"); - break; - } - - if (pds[PD_C].out_flags & PR_POLL_EXCEPT) { - showErr( "Exception on client-side socket.\n"); - break; - } - - if (pds[PD_S].out_flags & PR_POLL_EXCEPT) { - showErr( "Exception on server-side socket.\n"); - break; - } - - -/* read data, copy it to stdout, and write to other socket */ - - if ((pds[PD_C].in_flags & PR_POLL_READ) != 0 && - (pds[PD_C].out_flags & PR_POLL_READ) != 0 ) { - - amt = PR_Read(s_client, buffer, sizeof(buffer)); - - if ( amt < 0) { - showErr( "Client socket read failed.\n"); - break; - } - - if( amt == 0 ) { - PR_fprintf(PR_STDOUT, "Read EOF on Client socket. [%s]\n", - get_time_string() ); - pds[PD_C].in_flags &= ~PR_POLL_READ; - PR_Shutdown(s_server, PR_SHUTDOWN_SEND); - continue; - } - - PR_fprintf(PR_STDOUT,"--> [\n"); - if (fancy) PR_fprintf(PR_STDOUT,"<font color=blue>"); - - if (hexparse) print_hex(amt, buffer); - if (sslparse) print_ssl(&clientstream,amt,buffer); - if (!hexparse && !sslparse) PR_Write(PR_STDOUT,buffer,amt); - if (fancy) PR_fprintf(PR_STDOUT,"</font>"); - PR_fprintf(PR_STDOUT,"]\n"); - - wrote = PR_Write(s_server, buffer, amt); - if (wrote != amt ) { - if (wrote < 0) { - showErr("Write to server socket failed.\n"); - break; - } else { - PR_fprintf(PR_STDERR, "Short write to server socket!\n"); - } - } - } /* end of read from client socket. */ - -/* read data, copy it to stdout, and write to other socket */ - if ((pds[PD_S].in_flags & PR_POLL_READ) != 0 && - (pds[PD_S].out_flags & PR_POLL_READ) != 0 ) { - - amt = PR_Read(s_server, buffer, sizeof(buffer)); - - if ( amt < 0) { - showErr( "error on server-side socket.\n"); - break; - } - - if( amt == 0 ) { - PR_fprintf(PR_STDOUT, "Read EOF on Server socket. [%s]\n", - get_time_string() ); - pds[PD_S].in_flags &= ~PR_POLL_READ; - PR_Shutdown(s_client, PR_SHUTDOWN_SEND); - continue; - } - - PR_fprintf(PR_STDOUT,"<-- [\n"); - if (fancy) PR_fprintf(PR_STDOUT,"<font color=red>"); - if (hexparse) print_hex(amt, (unsigned char *)buffer); - if (sslparse) print_ssl(&serverstream,amt,(unsigned char *)buffer); - if (!hexparse && !sslparse) PR_Write(PR_STDOUT,buffer,amt); - if (fancy) PR_fprintf(PR_STDOUT,"</font>"); - PR_fprintf(PR_STDOUT,"]\n"); - - - wrote = PR_Write(s_client, buffer, amt); - if (wrote != amt ) { - if (wrote < 0) { - showErr("Write to client socket failed.\n"); - break; - } else { - PR_fprintf(PR_STDERR, "Short write to client socket!\n"); - } - } - - } /* end of read from server socket. */ - -/* Loop, handle next message. */ - - } /* handle messages during a connection loop */ - PR_Close(s_client); - PR_Close(s_server); - flush_stream(&clientstream); - flush_stream(&serverstream); - - c_count++; - PR_fprintf(PR_STDERR,"Connection %d Complete [%s]\n", c_count, - get_time_string() ); - } while (looparound); /* accept connection and process it. */ - PR_Close(s_rend); - return 0; -} |