/* * Copyright (C) 1997-2000 Sensus Consulting Ltd. * Matt Newman <matt@sensus.org> */ #include "tlsInt.h" /* * Ensure these are not macros - known to be defined on Win32 */ #ifdef min #undef min #endif #ifdef max #undef max #endif static int min(int a, int b) { return (a < b) ? a : b; } static int max(int a, int b) { return (a > b) ? a : b; } /* * ASN1_UTCTIME_tostr -- */ static char * ASN1_UTCTIME_tostr(ASN1_UTCTIME *tm) { static char bp[128]; char *v; int gmt=0; static char *mon[12]={ "Jan","Feb","Mar","Apr","May","Jun", "Jul","Aug","Sep","Oct","Nov","Dec"}; int i; int y=0,M=0,d=0,h=0,m=0,s=0; i=tm->length; v=(char *)tm->data; if (i < 10) goto err; if (v[i-1] == 'Z') gmt=1; for (i=0; i<10; i++) if ((v[i] > '9') || (v[i] < '0')) goto err; y= (v[0]-'0')*10+(v[1]-'0'); if (y < 70) y+=100; M= (v[2]-'0')*10+(v[3]-'0'); if ((M > 12) || (M < 1)) goto err; d= (v[4]-'0')*10+(v[5]-'0'); h= (v[6]-'0')*10+(v[7]-'0'); m= (v[8]-'0')*10+(v[9]-'0'); if ( (v[10] >= '0') && (v[10] <= '9') && (v[11] >= '0') && (v[11] <= '9')) s= (v[10]-'0')*10+(v[11]-'0'); sprintf(bp,"%s %2d %02d:%02d:%02d %d%s", mon[M-1],d,h,m,s,y+1900,(gmt)?" GMT":""); return bp; err: return "Bad time value"; } /* *------------------------------------------------------* * * Tls_NewX509Obj -- * * ------------------------------------------------* * Converts a X509 certificate into a Tcl_Obj * ------------------------------------------------* * * Sideeffects: * None * * Result: * A Tcl List Object representing the provided * X509 certificate. * *------------------------------------------------------* */ #define CERT_STR_SIZE 16384 Tcl_Obj* Tls_NewX509Obj( interp, cert) Tcl_Interp *interp; X509 *cert; { Tcl_Obj *certPtr = Tcl_NewListObj( 0, NULL); BIO *bio; int n; unsigned long flags; char subject[BUFSIZ]; char issuer[BUFSIZ]; char serial[BUFSIZ]; char notBefore[BUFSIZ]; char notAfter[BUFSIZ]; char certStr[CERT_STR_SIZE], *certStr_p; int certStr_len, toRead; #ifndef NO_SSL_SHA char sha1_hash_ascii[SHA_DIGEST_LENGTH * 2 + 1]; unsigned char sha1_hash_binary[SHA_DIGEST_LENGTH]; char sha256_hash_ascii[SHA256_DIGEST_LENGTH*2+1]; unsigned char sha256_hash_binary[SHA256_DIGEST_LENGTH]; const char *shachars="0123456789ABCDEF"; sha1_hash_ascii[SHA_DIGEST_LENGTH * 2] = '\0'; sha256_hash_ascii[SHA256_DIGEST_LENGTH * 2] = '\0'; #endif certStr[0] = 0; if ((bio = BIO_new(BIO_s_mem())) == NULL) { subject[0] = 0; issuer[0] = 0; serial[0] = 0; } else { flags = XN_FLAG_RFC2253 | ASN1_STRFLGS_UTF8_CONVERT; flags &= ~ASN1_STRFLGS_ESC_MSB; X509_NAME_print_ex(bio, X509_get_subject_name(cert), 0, flags); n = BIO_read(bio, subject, min(BIO_pending(bio), BUFSIZ - 1)); n = max(n, 0); subject[n] = 0; (void)BIO_flush(bio); X509_NAME_print_ex(bio, X509_get_issuer_name(cert), 0, flags); n = BIO_read(bio, issuer, min(BIO_pending(bio), BUFSIZ - 1)); n = max(n, 0); issuer[n] = 0; (void)BIO_flush(bio); i2a_ASN1_INTEGER(bio, X509_get_serialNumber(cert)); n = BIO_read(bio, serial, min(BIO_pending(bio), BUFSIZ - 1)); n = max(n, 0); serial[n] = 0; (void)BIO_flush(bio); if (PEM_write_bio_X509(bio, cert)) { certStr_p = certStr; certStr_len = 0; while (1) { toRead = min(BIO_pending(bio), CERT_STR_SIZE - certStr_len - 1); toRead = min(toRead, BUFSIZ); if (toRead == 0) { break; } dprintf("Reading %i bytes from the certificate...", toRead); n = BIO_read(bio, certStr_p, toRead); if (n <= 0) { break; } certStr_len += n; certStr_p += n; } *certStr_p = '\0'; (void)BIO_flush(bio); } BIO_free(bio); } strcpy( notBefore, ASN1_UTCTIME_tostr( X509_get_notBefore(cert) )); strcpy( notAfter, ASN1_UTCTIME_tostr( X509_get_notAfter(cert) )); #ifndef NO_SSL_SHA /* SHA1 */ X509_digest(cert, EVP_sha1(), sha1_hash_binary, NULL); for (int n = 0; n < SHA_DIGEST_LENGTH; n++) { sha1_hash_ascii[n * 2] = shachars[(sha1_hash_binary[n] & 0xF0) >> 4]; sha1_hash_ascii[n * 2 + 1] = shachars[(sha1_hash_binary[n] & 0x0F)]; } Tcl_ListObjAppendElement( interp, certPtr, Tcl_NewStringObj("sha1_hash", -1) ); Tcl_ListObjAppendElement( interp, certPtr, Tcl_NewStringObj(sha1_hash_ascii, SHA_DIGEST_LENGTH * 2) ); /* SHA256 */ X509_digest(cert, EVP_sha256(), sha256_hash_binary, NULL); for (int n = 0; n < SHA256_DIGEST_LENGTH; n++) { sha256_hash_ascii[n*2] = shachars[(sha256_hash_binary[n] & 0xF0) >> 4]; sha256_hash_ascii[n*2+1] = shachars[(sha256_hash_binary[n] & 0x0F)]; } Tcl_ListObjAppendElement( interp, certPtr, Tcl_NewStringObj( "sha256_hash", -1) ); Tcl_ListObjAppendElement( interp, certPtr, Tcl_NewStringObj( sha256_hash_ascii, SHA256_DIGEST_LENGTH * 2) ); #endif Tcl_ListObjAppendElement( interp, certPtr, Tcl_NewStringObj( "subject", -1) ); Tcl_ListObjAppendElement( interp, certPtr, Tcl_NewStringObj( subject, -1) ); Tcl_ListObjAppendElement( interp, certPtr, Tcl_NewStringObj( "issuer", -1) ); Tcl_ListObjAppendElement( interp, certPtr, Tcl_NewStringObj( issuer, -1) ); Tcl_ListObjAppendElement( interp, certPtr, Tcl_NewStringObj( "notBefore", -1) ); Tcl_ListObjAppendElement( interp, certPtr, Tcl_NewStringObj( notBefore, -1) ); Tcl_ListObjAppendElement( interp, certPtr, Tcl_NewStringObj( "notAfter", -1) ); Tcl_ListObjAppendElement( interp, certPtr, Tcl_NewStringObj( notAfter, -1) ); Tcl_ListObjAppendElement( interp, certPtr, Tcl_NewStringObj( "serial", -1) ); Tcl_ListObjAppendElement( interp, certPtr, Tcl_NewStringObj( serial, -1) ); Tcl_ListObjAppendElement( interp, certPtr, Tcl_NewStringObj( "certificate", -1) ); Tcl_ListObjAppendElement( interp, certPtr, Tcl_NewStringObj( certStr, -1) ); return certPtr; }