Delete bundled copy of NSS and replace with README.

nss/lib/util/dersubr.c

Index: nss/lib/util/dersubr.c
diff --git a/nss/lib/util/dersubr.c b/nss/lib/util/dersubr.c
deleted file mode 100644
index 657dd9f0139d5e57470bc49b280e813e25af5d87..0000000000000000000000000000000000000000
--- a/nss/lib/util/dersubr.c
+++ /dev/null
@@ -1,254 +0,0 @@
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-#include "secder.h"
-#include <limits.h>
-#include "secerr.h"
-
-int
-DER_LengthLength(PRUint32 len)
-{
-    if (len > 127) {
-	if (len > 255) {
-	    if (len > 65535L) {
-		if (len > 16777215L) {
-		    return 5;
-		} else {
-		    return 4;
-		}
-	    } else {
-		return 3;
-	    }
-	} else {
-	    return 2;
-	}
-    } else {
-	return 1;
-    }
-}
-
-unsigned char *
-DER_StoreHeader(unsigned char *buf, unsigned int code, PRUint32 len)
-{
-    unsigned char b[4];
-
-    b[0] = (unsigned char)(len >> 24);
-    b[1] = (unsigned char)(len >> 16);
-    b[2] = (unsigned char)(len >> 8);
-    b[3] = (unsigned char)len;
-    if ((code & DER_TAGNUM_MASK) == DER_SET
-	|| (code & DER_TAGNUM_MASK) == DER_SEQUENCE)
-	code |= DER_CONSTRUCTED;
-    *buf++ = code;
-    if (len > 127) {
-	if (len > 255) {
-	    if (len > 65535) {
-		if (len > 16777215) {
-		    *buf++ = 0x84;
-		    *buf++ = b[0];
-		    *buf++ = b[1];
-		    *buf++ = b[2];
-		    *buf++ = b[3];
-		} else {
-		    *buf++ = 0x83;
-		    *buf++ = b[1];
-		    *buf++ = b[2];
-		    *buf++ = b[3];
-		}
-	    } else {
-		*buf++ = 0x82;
-		*buf++ = b[2];
-		*buf++ = b[3];
-	    }
-	} else {
-	    *buf++ = 0x81;
-	    *buf++ = b[3];
-	}
-    } else {
-	*buf++ = b[3];
-    }
-    return buf;
-}
-
-/*
- * XXX This should be rewritten, generalized, to take a long instead
- * of a PRInt32.
- */
-SECStatus
-DER_SetInteger(PLArenaPool *arena, SECItem *it, PRInt32 i)
-{
-    unsigned char bb[4];
-    unsigned len;
-
-    bb[0] = (unsigned char) (i >> 24);
-    bb[1] = (unsigned char) (i >> 16);
-    bb[2] = (unsigned char) (i >> 8);
-    bb[3] = (unsigned char) (i);
-
-    /*
-    ** Small integers are encoded in a single byte. Larger integers
-    ** require progressively more space.
-    */
-    if (i < -128) {
-	if (i < -32768L) {
-	    if (i < -8388608L) {
-		len = 4;
-	    } else {
-		len = 3;
-	    }
-	} else {
-	    len = 2;
-	}
-    } else if (i > 127) {
-	if (i > 32767L) {
-	    if (i > 8388607L) {
-		len = 4;
-	    } else {
-		len = 3;
-	    }
-	} else {
-	    len = 2;
-	}
-    } else {
-	len = 1;
-    }
-    it->data = (unsigned char*) PORT_ArenaAlloc(arena, len);
-    if (!it->data) {
-	return SECFailure;
-    }
-    it->len = len;
-    PORT_Memcpy(it->data, bb + (4 - len), len);
-    return SECSuccess;
-}
-
-/*
- * XXX This should be rewritten, generalized, to take an unsigned long instead
- * of a PRUint32.
- */
-SECStatus
-DER_SetUInteger(PLArenaPool *arena, SECItem *it, PRUint32 ui)
-{
-    unsigned char bb[5];
-    int len;
-
-    bb[0] = 0;
-    bb[1] = (unsigned char) (ui >> 24);
-    bb[2] = (unsigned char) (ui >> 16);
-    bb[3] = (unsigned char) (ui >> 8);
-    bb[4] = (unsigned char) (ui);
-
-    /*
-    ** Small integers are encoded in a single byte. Larger integers
-    ** require progressively more space.
-    */
-    if (ui > 0x7f) {
-	if (ui > 0x7fff) {
-	    if (ui > 0x7fffffL) {
-		if (ui >= 0x80000000L) {
-		    len = 5;
-		} else {
-		    len = 4;
-		}
-	    } else {
-		len = 3;
-	    }
-	} else {
-	    len = 2;
-	}
-    } else {
-	len = 1;
-    }
-
-    it->data = (unsigned char *)PORT_ArenaAlloc(arena, len);
-    if (it->data == NULL) {
-	return SECFailure;
-    }
-
-    it->len = len;
-    PORT_Memcpy(it->data, bb + (sizeof(bb) - len), len);
-
-    return SECSuccess;
-}
-
-/*
-** Convert a der encoded *signed* integer into a machine integral value.
-** If an underflow/overflow occurs, sets error code and returns min/max.
-*/
-long
-DER_GetInteger(const SECItem *it)
-{
-    long ival = 0;
-    PRBool negative = PR_FALSE;
-    unsigned int len = it->len;
-    unsigned int originalLength = len;
-    unsigned char *cp = it->data;
-    unsigned long overflow = 0x1ffUL << (((sizeof(ival) - 1) * 8) - 1);
-    unsigned long mask = 1;
-
-    PORT_Assert(len);
-    if (!len) {
-	PORT_SetError(SEC_ERROR_INPUT_LEN);
-	return 0;
-    }
-
-    if (*cp & 0x80) {
-	negative = PR_TRUE;
-	overflow <<= 1;
-    }
-
-    while (len) {
-	if ((ival & overflow) != 0) {
-	    PORT_SetError(SEC_ERROR_BAD_DER);
-	    if (negative) {
-		return LONG_MIN;
-	    }
-	    return LONG_MAX;
-	}
-	ival = ival << 8;
-	ival |= *cp++;
-	--len;
-    }
-    if (negative && ival && (overflow & ival) == 0) {
-	mask <<=  ((originalLength  * 8) - 1);
-	ival &= ~mask;
-	ival -= mask;
-    }
-    return ival;
-}
-
-/*
-** Convert a der encoded *unsigned* integer into a machine integral value.
-** If an overflow occurs, sets error code and returns max.
-*/
-unsigned long
-DER_GetUInteger(SECItem *it)
-{
-    unsigned long ival = 0;
-    unsigned len = it->len;
-    unsigned char *cp = it->data;
-    unsigned long overflow = 0xffUL << ((sizeof(ival) - 1) * 8);
-
-    PORT_Assert(len);
-    if (!len) {
-	PORT_SetError(SEC_ERROR_INPUT_LEN);
-	return 0;
-    }
-
-    /* Cannot put a negative value into an unsigned container. */
-    if (*cp & 0x80) {
-	PORT_SetError(SEC_ERROR_BAD_DER);
-	return 0;
-    }
-
-    while (len) {
-	if (ival & overflow) {
-	    PORT_SetError(SEC_ERROR_BAD_DER);
-	    return ULONG_MAX;
-	}
-	ival = ival << 8;
-	ival |= *cp++;
-	--len;
-    }
-    return ival;
-}