diff options
Diffstat (limited to 'security/nss/cmd/lib/secarb.c')
| -rw-r--r-- | security/nss/cmd/lib/secarb.c | 372 |
1 files changed, 372 insertions, 0 deletions
diff --git a/security/nss/cmd/lib/secarb.c b/security/nss/cmd/lib/secarb.c new file mode 100644 index 000000000..176fcbf8b --- /dev/null +++ b/security/nss/cmd/lib/secarb.c @@ -0,0 +1,372 @@ +/* + * 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. + */ +#include "secutil.h" + +#ifdef __sun +extern int fprintf(FILE *strm, const char *format, .../* args */); +extern int fflush(FILE *stream); +#endif + +#define RIGHT_MARGIN 24 +/*#define RAW_BYTES 1 */ + +typedef unsigned char Byte; + +static int prettyColumn; /* NOTE: This is NOT reentrant. */ + +static char *prettyTagType [32] = { + "End of Contents", "Boolean", "Integer", "Bit String", "Octet String", + "NULL", "Object Identifier", "0x07", "0x08", "0x09", "0x0A", + "0x0B", "0X0C", "0X0D", "0X0E", "0X0F", "Sequence", "Set", + "0x12", "Printable String", "T61 String", "0x15", "IA5 String", + "UTCTime", + "0x18", "0x19", "0x1A", "0x1B", "0x1C", "0x1D", "0x1E", + "High-Tag-Number" +}; + +static SECStatus prettyNewline(FILE *out) +{ + int rv; + + if (prettyColumn != -1) { + rv = fprintf(out, "\n"); + prettyColumn = -1; + if (rv < 0) { + PORT_SetError(SEC_ERROR_IO); + return SECFailure; + } + } + return SECSuccess; +} + +static SECStatus prettyIndent(FILE *out, unsigned level) +{ + unsigned i; + SECStatus rv; + + if (prettyColumn == -1) { + prettyColumn = level; + for (i = 0; i < level; i++) { + rv = (SECStatus) fprintf(out, " "); + if (rv < 0) { + PORT_SetError(SEC_ERROR_IO); + return SECFailure; + } + } + } + return SECSuccess; +} + +static SECStatus prettyPrintByte(FILE *out, Byte item, unsigned level) +{ + SECStatus rv; + + rv = prettyIndent(out, level); + if (rv) return rv; + + rv = (SECStatus) fprintf(out, "%02x ", item); + if (rv < 0) { + PORT_SetError(SEC_ERROR_IO); + return SECFailure; + } + prettyColumn++; + if (prettyColumn >= RIGHT_MARGIN) { + rv = prettyNewline(out); + return rv; + } + return SECSuccess; +} + +static SECStatus prettyPrintCString(FILE *out, char *str, unsigned level) +{ + SECStatus rv; + + rv = prettyNewline(out); + if (rv) return rv; + + rv = prettyIndent(out, level); + if (rv) return rv; + + rv = (SECStatus) fprintf(out, str); + if (rv < 0) { + PORT_SetError(SEC_ERROR_IO); + return SECFailure; + } + + rv = prettyNewline(out); + return rv; +} + +static SECStatus prettyPrintLeafString(FILE *out, SECArb *arb, unsigned lv) +{ + unsigned char buf[100]; + SECStatus rv; + int length = arb->body.item.len; + + if (length > 0 && arb->body.item.data == NULL) + return prettyPrintCString(out, "(string contents not available)", lv); + + if (length >= sizeof(buf)) + length = sizeof(buf) - 1; + + rv = prettyNewline(out); + if (rv) return rv; + + rv = prettyIndent(out, lv); + if (rv) return rv; + + memcpy(buf, arb->body.item.data, length); + buf[length] = '\000'; + + rv = (SECStatus) fprintf(out, "\"%s\"", buf); + if (rv < 0) { + PORT_SetError(SEC_ERROR_IO); + return SECFailure; + } + rv = prettyNewline(out); + if (rv) return rv; + + return SECSuccess; +} + +static SECStatus prettyPrintLeaf(FILE *out, SECArb* arb, unsigned lv) +{ + unsigned i; + SECStatus rv; + Byte *data = arb->body.item.data; + + if (data == NULL && arb->body.item.len > 0) + return prettyPrintCString(out, "(data not availabe)", lv); + + for (i = 0; i < arb->body.item.len; i++) { + rv = prettyPrintByte(out, *data++, lv); + if (rv) return rv; + } + + rv = prettyNewline(out); + return rv; +} + +static SECStatus prettyPrintEndContents(FILE *out, unsigned level) +{ + return prettyPrintCString(out, prettyTagType[0], level); +} + +static SECStatus prettyPrintTag(FILE *out, SECArb *arb, unsigned level) +{ + int rv; + +#ifdef RAW_BYTES + if (prettyPrintByte(out, arb->tag, level)) return PR_TRUE; +#else + if (prettyIndent(out, level)) return PR_TRUE; +#endif + + if (arb->tag & DER_CONSTRUCTED) { + rv = fprintf(out, "C-"); + if (rv < 0) { + PORT_SetError(SEC_ERROR_IO); + return PR_TRUE; + } + } + + switch(arb->tag & 0xC0) { + case DER_UNIVERSAL: + rv = fprintf(out, "%s ", prettyTagType[arb->tag & 0x17]); + break; + case DER_APPLICATION: + rv = fprintf(out, "Application: %d ", arb->tag & 0x17); + break; + case DER_CONTEXT_SPECIFIC: + rv = fprintf(out, "[%d] ", arb->tag & 0x17); + break; + case DER_PRIVATE: + rv = fprintf(out, "Private: %d ", arb->tag & 0x17); + break; + } + + if (rv < 0) { + PORT_SetError(SEC_ERROR_IO); + return PR_TRUE; + } + return PR_FALSE; +} + +static SECStatus prettyPrintLength(FILE *out, SECArb *arb, unsigned lv) +{ + int rv = fprintf(out, " (%d)\n", arb->length); + if (rv < 0) { + PORT_SetError(SEC_ERROR_IO); + return -1; + } + prettyColumn = -1; + return PR_FALSE; +} + +static SECStatus prettyPrint(FILE *out, SECArb *arb, unsigned lv) +{ + int i; + + prettyPrintTag(out, arb, lv); + prettyPrintLength(out, arb, lv); + + if (arb->tag & DER_CONSTRUCTED) { + for (i = 0; i < arb->body.cons.numSubs; i++) + prettyPrint(out, arb->body.cons.subs[i], lv + 1); + if (arb->length == 0) + prettyPrintEndContents(out, lv); + } else { + if (arb->tag == DER_PRINTABLE_STRING || arb->tag == DER_UTC_TIME) { + if (prettyPrintLeafString(out, arb, lv+1)) return PR_TRUE; +#ifdef RAW_BYTES + if (prettyPrintLeaf(out, arb, lv+1)) return PR_TRUE; +#endif + } else { + if (prettyPrintLeaf(out, arb, lv+1)) return PR_TRUE; + } + } + + return prettyNewline(out); +} + +SECStatus BER_PrettyPrintArb(FILE *out, SECArb *a) +{ + prettyColumn = -1; + return prettyPrint(out, a, 0); +} + +/* + * PackHeader puts the tag and length field into a buffer provided by the + * client. It assumes the client has made the buffer at least big + * enough. (8 bytes will suffice for now). It returns the number of + * valid bytes + */ +static int PackHeader(SECArb *arb, unsigned char *header) +{ + int tagBytes, lengthBytes; + unsigned long length = arb->length; + /* + * XXX only handles short form tags + */ + header[0] = arb->tag; + tagBytes = 1; + + if (length < 0x80) { + if ((arb->tag & DER_CONSTRUCTED) && (arb->length == 0)) + header[tagBytes] = 0x80; /* indefinite length form */ + else + header[tagBytes] = arb->length; + lengthBytes = 1; + } else { + int i; + lengthBytes = 0; + for (i = 0; i < 4; i++) { + if ((length & 0xFF000000) || (lengthBytes > 0)) { + header[tagBytes + lengthBytes + 1] = length >> 24; + lengthBytes++; + } + length <<= 8; + } + header[tagBytes] = 0x80 + lengthBytes; + lengthBytes++; /* allow for the room for the length length */ + } + return tagBytes + lengthBytes; +} + +SECStatus BER_Unparse(SECArb *arb, BERUnparseProc proc, void *instance) +{ + int i, length; + SECStatus rv; + unsigned char header[12]; + + length = PackHeader(arb, header); + rv = (*proc)(instance, header, length, arb); + if (rv) return rv; + + if (arb->tag & DER_CONSTRUCTED) { + for (i = 0; i < arb->body.cons.numSubs; i++) { + rv = BER_Unparse(arb->body.cons.subs[i], proc, instance); + if (rv) return rv; + } + if (arb->length == 0) { + rv = (*proc)(instance, "\0\0", 2, arb); + if (rv) return rv; + } + } else { + if ((arb->length > 0) && (arb->body.item.data == NULL)) + return SECFailure; + if (arb->length != arb->body.item.len) + return SECFailure; + rv = (*proc)(instance, arb->body.item.data, arb->length, arb); + } + return SECSuccess; +} + +static int ResolveLength(SECArb *arb) +{ + int length, i, rv; + unsigned char header[12]; + + /* + * One theory is that there might be valid subtrees along with + * still yet uknown length trees. That would imply that the scan + * should not be aborted on first failure. + */ + + length = PackHeader(arb, header); + if (arb->tag | DER_CONSTRUCTED) { + if (arb->length > 0) + length += arb->length; + else { + for (i = 0; i < arb->body.cons.numSubs; i++) { + rv = ResolveLength(arb->body.cons.subs[i]); + if (rv < 0) return -1; + length += rv; + } + arb->length = length; + } + } else { + if (arb->length != arb->body.item.len) + return -1; + length += arb->length; + } + return length; +} + +SECStatus BER_ResolveLengths(SECArb *arb) +{ + int rv; + rv = ResolveLength(arb); + if (rv < 0) return SECFailure; + return SECSuccess; +} |