Add m-esr52 at 52.6.0

1 files changed, 679 insertions, 0 deletions

diff --git a/security/nss/lib/base/utf8.c b/security/nss/lib/base/utf8.c
new file mode 100644
index 000000000..6d7b6a015
--- /dev/null
+++ b/security/nss/lib/base/utf8.c
@@ -0,0 +1,679 @@
+/* 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/. */
+
+/*
+ * utf8.c
+ *
+ * This file contains some additional utility routines required for
+ * handling UTF8 strings.
+ */
+
+#ifndef BASE_H
+#include "base.h"
+#endif /* BASE_H */
+
+#include "plstr.h"
+
+/*
+ * NOTES:
+ *
+ * There's an "is hex string" function in pki1/atav.c.  If we need
+ * it in more places, pull that one out.
+ */
+
+/*
+ * nssUTF8_CaseIgnoreMatch
+ *
+ * Returns true if the two UTF8-encoded strings pointed to by the
+ * two specified NSSUTF8 pointers differ only in typcase.
+ *
+ * The error may be one of the following values:
+ *  NSS_ERROR_INVALID_POINTER
+ *
+ * Return value:
+ *  PR_TRUE if the strings match, ignoring case
+ *  PR_FALSE if they don't
+ *  PR_FALSE upon error
+ */
+
+NSS_IMPLEMENT PRBool
+nssUTF8_CaseIgnoreMatch(const NSSUTF8 *a, const NSSUTF8 *b, PRStatus *statusOpt)
+{
+#ifdef NSSDEBUG
+    if (((const NSSUTF8 *)NULL == a) || ((const NSSUTF8 *)NULL == b)) {
+        nss_SetError(NSS_ERROR_INVALID_POINTER);
+        if ((PRStatus *)NULL != statusOpt) {
+            *statusOpt = PR_FAILURE;
+        }
+        return PR_FALSE;
+    }
+#endif /* NSSDEBUG */
+
+    if ((PRStatus *)NULL != statusOpt) {
+        *statusOpt = PR_SUCCESS;
+    }
+
+    /*
+     * XXX fgmr
+     *
+     * This is, like, so wrong!
+     */
+    if (0 == PL_strcasecmp((const char *)a, (const char *)b)) {
+        return PR_TRUE;
+    } else {
+        return PR_FALSE;
+    }
+}
+
+/*
+ * nssUTF8_PrintableMatch
+ *
+ * Returns true if the two Printable strings pointed to by the
+ * two specified NSSUTF8 pointers match when compared with the
+ * rules for Printable String (leading and trailing spaces are
+ * disregarded, extents of whitespace match irregardless of length,
+ * and case is not significant), then PR_TRUE will be returned.
+ * Otherwise, PR_FALSE will be returned.  Upon failure, PR_FALSE
+ * will be returned.  If the optional statusOpt argument is not
+ * NULL, then PR_SUCCESS or PR_FAILURE will be stored in that
+ * location.
+ *
+ * The error may be one of the following values:
+ *  NSS_ERROR_INVALID_POINTER
+ *
+ * Return value:
+ *  PR_TRUE if the strings match, ignoring case
+ *  PR_FALSE if they don't
+ *  PR_FALSE upon error
+ */
+
+NSS_IMPLEMENT PRBool
+nssUTF8_PrintableMatch(const NSSUTF8 *a, const NSSUTF8 *b, PRStatus *statusOpt)
+{
+    PRUint8 *c;
+    PRUint8 *d;
+
+#ifdef NSSDEBUG
+    if (((const NSSUTF8 *)NULL == a) || ((const NSSUTF8 *)NULL == b)) {
+        nss_SetError(NSS_ERROR_INVALID_POINTER);
+        if ((PRStatus *)NULL != statusOpt) {
+            *statusOpt = PR_FAILURE;
+        }
+        return PR_FALSE;
+    }
+#endif /* NSSDEBUG */
+
+    if ((PRStatus *)NULL != statusOpt) {
+        *statusOpt = PR_SUCCESS;
+    }
+
+    c = (PRUint8 *)a;
+    d = (PRUint8 *)b;
+
+    while (' ' == *c) {
+        c++;
+    }
+
+    while (' ' == *d) {
+        d++;
+    }
+
+    while (('\0' != *c) && ('\0' != *d)) {
+        PRUint8 e, f;
+
+        e = *c;
+        f = *d;
+
+        if (('a' <= e) && (e <= 'z')) {
+            e -= ('a' - 'A');
+        }
+
+        if (('a' <= f) && (f <= 'z')) {
+            f -= ('a' - 'A');
+        }
+
+        if (e != f) {
+            return PR_FALSE;
+        }
+
+        c++;
+        d++;
+
+        if (' ' == *c) {
+            while (' ' == *c) {
+                c++;
+            }
+            c--;
+        }
+
+        if (' ' == *d) {
+            while (' ' == *d) {
+                d++;
+            }
+            d--;
+        }
+    }
+
+    while (' ' == *c) {
+        c++;
+    }
+
+    while (' ' == *d) {
+        d++;
+    }
+
+    if (*c == *d) {
+        /* And both '\0', btw */
+        return PR_TRUE;
+    } else {
+        return PR_FALSE;
+    }
+}
+
+/*
+ * nssUTF8_Duplicate
+ *
+ * This routine duplicates the UTF8-encoded string pointed to by the
+ * specified NSSUTF8 pointer.  If the optional arenaOpt argument is
+ * not null, the memory required will be obtained from that arena;
+ * otherwise, the memory required will be obtained from the heap.
+ * A pointer to the new string will be returned.  In case of error,
+ * an error will be placed on the error stack and NULL will be
+ * returned.
+ *
+ * The error may be one of the following values:
+ *  NSS_ERROR_INVALID_POINTER
+ *  NSS_ERROR_INVALID_ARENA
+ *  NSS_ERROR_NO_MEMORY
+ */
+
+NSS_IMPLEMENT NSSUTF8 *
+nssUTF8_Duplicate(const NSSUTF8 *s, NSSArena *arenaOpt)
+{
+    NSSUTF8 *rv;
+    PRUint32 len;
+
+#ifdef NSSDEBUG
+    if ((const NSSUTF8 *)NULL == s) {
+        nss_SetError(NSS_ERROR_INVALID_POINTER);
+        return (NSSUTF8 *)NULL;
+    }
+
+    if ((NSSArena *)NULL != arenaOpt) {
+        if (PR_SUCCESS != nssArena_verifyPointer(arenaOpt)) {
+            return (NSSUTF8 *)NULL;
+        }
+    }
+#endif /* NSSDEBUG */
+
+    len = PL_strlen((const char *)s);
+#ifdef PEDANTIC
+    if ('\0' != ((const char *)s)[len]) {
+        /* must have wrapped, e.g., too big for PRUint32 */
+        nss_SetError(NSS_ERROR_NO_MEMORY);
+        return (NSSUTF8 *)NULL;
+    }
+#endif     /* PEDANTIC */
+    len++; /* zero termination */
+
+    rv = nss_ZAlloc(arenaOpt, len);
+    if ((void *)NULL == rv) {
+        return (NSSUTF8 *)NULL;
+    }
+
+    (void)nsslibc_memcpy(rv, s, len);
+    return rv;
+}
+
+/*
+ * nssUTF8_Size
+ *
+ * This routine returns the length in bytes (including the terminating
+ * null) of the UTF8-encoded string pointed to by the specified
+ * NSSUTF8 pointer.  Zero is returned on error.
+ *
+ * The error may be one of the following values:
+ *  NSS_ERROR_INVALID_POINTER
+ *  NSS_ERROR_VALUE_TOO_LARGE
+ *
+ * Return value:
+ *  0 on error
+ *  nonzero length of the string.
+ */
+
+NSS_IMPLEMENT PRUint32
+nssUTF8_Size(const NSSUTF8 *s, PRStatus *statusOpt)
+{
+    PRUint32 sv;
+
+#ifdef NSSDEBUG
+    if ((const NSSUTF8 *)NULL == s) {
+        nss_SetError(NSS_ERROR_INVALID_POINTER);
+        if ((PRStatus *)NULL != statusOpt) {
+            *statusOpt = PR_FAILURE;
+        }
+        return 0;
+    }
+#endif /* NSSDEBUG */
+
+    sv = PL_strlen((const char *)s) + 1;
+#ifdef PEDANTIC
+    if ('\0' != ((const char *)s)[sv - 1]) {
+        /* wrapped */
+        nss_SetError(NSS_ERROR_VALUE_TOO_LARGE);
+        if ((PRStatus *)NULL != statusOpt) {
+            *statusOpt = PR_FAILURE;
+        }
+        return 0;
+    }
+#endif /* PEDANTIC */
+
+    if ((PRStatus *)NULL != statusOpt) {
+        *statusOpt = PR_SUCCESS;
+    }
+
+    return sv;
+}
+
+/*
+ * nssUTF8_Length
+ *
+ * This routine returns the length in characters (not including the
+ * terminating null) of the UTF8-encoded string pointed to by the
+ * specified NSSUTF8 pointer.
+ *
+ * The error may be one of the following values:
+ *  NSS_ERROR_INVALID_POINTER
+ *  NSS_ERROR_VALUE_TOO_LARGE
+ *  NSS_ERROR_INVALID_STRING
+ *
+ * Return value:
+ *  length of the string (which may be zero)
+ *  0 on error
+ */
+
+NSS_IMPLEMENT PRUint32
+nssUTF8_Length(const NSSUTF8 *s, PRStatus *statusOpt)
+{
+    PRUint32 l = 0;
+    const PRUint8 *c = (const PRUint8 *)s;
+
+#ifdef NSSDEBUG
+    if ((const NSSUTF8 *)NULL == s) {
+        nss_SetError(NSS_ERROR_INVALID_POINTER);
+        goto loser;
+    }
+#endif /* NSSDEBUG */
+
+    /*
+     * From RFC 2044:
+     *
+     * UCS-4 range (hex.)           UTF-8 octet sequence (binary)
+     * 0000 0000-0000 007F   0xxxxxxx
+     * 0000 0080-0000 07FF   110xxxxx 10xxxxxx
+     * 0000 0800-0000 FFFF   1110xxxx 10xxxxxx 10xxxxxx
+     * 0001 0000-001F FFFF   11110xxx 10xxxxxx 10xxxxxx 10xxxxxx
+     * 0020 0000-03FF FFFF   111110xx 10xxxxxx 10xxxxxx 10xxxxxx 10xxxxxx
+     * 0400 0000-7FFF FFFF   1111110x 10xxxxxx ... 10xxxxxx
+     */
+
+    while (0 != *c) {
+        PRUint32 incr;
+        if ((*c & 0x80) == 0) {
+            incr = 1;
+        } else if ((*c & 0xE0) == 0xC0) {
+            incr = 2;
+        } else if ((*c & 0xF0) == 0xE0) {
+            incr = 3;
+        } else if ((*c & 0xF8) == 0xF0) {
+            incr = 4;
+        } else if ((*c & 0xFC) == 0xF8) {
+            incr = 5;
+        } else if ((*c & 0xFE) == 0xFC) {
+            incr = 6;
+        } else {
+            nss_SetError(NSS_ERROR_INVALID_STRING);
+            goto loser;
+        }
+
+        l += incr;
+
+#ifdef PEDANTIC
+        if (l < incr) {
+            /* Wrapped-- too big */
+            nss_SetError(NSS_ERROR_VALUE_TOO_LARGE);
+            goto loser;
+        }
+
+        {
+            PRUint8 *d;
+            for (d = &c[1]; d < &c[incr]; d++) {
+                if ((*d & 0xC0) != 0xF0) {
+                    nss_SetError(NSS_ERROR_INVALID_STRING);
+                    goto loser;
+                }
+            }
+        }
+#endif /* PEDANTIC */
+
+        c += incr;
+    }
+
+    if ((PRStatus *)NULL != statusOpt) {
+        *statusOpt = PR_SUCCESS;
+    }
+
+    return l;
+
+loser:
+    if ((PRStatus *)NULL != statusOpt) {
+        *statusOpt = PR_FAILURE;
+    }
+
+    return 0;
+}
+
+/*
+ * nssUTF8_Create
+ *
+ * This routine creates a UTF8 string from a string in some other
+ * format.  Some types of string may include embedded null characters,
+ * so for them the length parameter must be used.  For string types
+ * that are null-terminated, the length parameter is optional; if it
+ * is zero, it will be ignored.  If the optional arena argument is
+ * non-null, the memory used for the new string will be obtained from
+ * that arena, otherwise it will be obtained from the heap.  This
+ * routine may return NULL upon error, in which case it will have
+ * placed an error on the error stack.
+ *
+ * The error may be one of the following:
+ *  NSS_ERROR_INVALID_POINTER
+ *  NSS_ERROR_NO_MEMORY
+ *  NSS_ERROR_UNSUPPORTED_TYPE
+ *
+ * Return value:
+ *  NULL upon error
+ *  A non-null pointer to a new UTF8 string otherwise
+ */
+
+extern const NSSError NSS_ERROR_INTERNAL_ERROR; /* XXX fgmr */
+
+NSS_IMPLEMENT NSSUTF8 *
+nssUTF8_Create(NSSArena *arenaOpt, nssStringType type, const void *inputString,
+               PRUint32 size /* in bytes, not characters */
+               )
+{
+    NSSUTF8 *rv = NULL;
+
+#ifdef NSSDEBUG
+    if ((NSSArena *)NULL != arenaOpt) {
+        if (PR_SUCCESS != nssArena_verifyPointer(arenaOpt)) {
+            return (NSSUTF8 *)NULL;
+        }
+    }
+
+    if ((const void *)NULL == inputString) {
+        nss_SetError(NSS_ERROR_INVALID_POINTER);
+        return (NSSUTF8 *)NULL;
+    }
+#endif /* NSSDEBUG */
+
+    switch (type) {
+        case nssStringType_DirectoryString:
+            /* This is a composite type requiring BER */
+            nss_SetError(NSS_ERROR_UNSUPPORTED_TYPE);
+            break;
+        case nssStringType_TeletexString:
+            /*
+             * draft-ietf-pkix-ipki-part1-11 says in part:
+             *
+             * In addition, many legacy implementations support names encoded
+             * in the ISO 8859-1 character set (Latin1String) but tag them as
+             * TeletexString.  The Latin1String includes characters used in
+             * Western European countries which are not part of the
+             * TeletexString charcter set.  Implementations that process
+             * TeletexString SHOULD be prepared to handle the entire ISO
+             * 8859-1 character set.[ISO 8859-1].
+             */
+            nss_SetError(NSS_ERROR_INTERNAL_ERROR); /* unimplemented */
+            break;
+        case nssStringType_PrintableString:
+            /*
+             * PrintableString consists of A-Za-z0-9 ,()+,-./:=?
+             * This is a subset of ASCII, which is a subset of UTF8.
+             * So we can just duplicate the string over.
+             */
+
+            if (0 == size) {
+                rv = nssUTF8_Duplicate((const NSSUTF8 *)inputString, arenaOpt);
+            } else {
+                rv = nss_ZAlloc(arenaOpt, size + 1);
+                if ((NSSUTF8 *)NULL == rv) {
+                    return (NSSUTF8 *)NULL;
+                }
+
+                (void)nsslibc_memcpy(rv, inputString, size);
+            }
+
+            break;
+        case nssStringType_UniversalString:
+            /* 4-byte unicode */
+            nss_SetError(NSS_ERROR_INTERNAL_ERROR); /* unimplemented */
+            break;
+        case nssStringType_BMPString:
+            /* Base Multilingual Plane of Unicode */
+            nss_SetError(NSS_ERROR_INTERNAL_ERROR); /* unimplemented */
+            break;
+        case nssStringType_UTF8String:
+            if (0 == size) {
+                rv = nssUTF8_Duplicate((const NSSUTF8 *)inputString, arenaOpt);
+            } else {
+                rv = nss_ZAlloc(arenaOpt, size + 1);
+                if ((NSSUTF8 *)NULL == rv) {
+                    return (NSSUTF8 *)NULL;
+                }
+
+                (void)nsslibc_memcpy(rv, inputString, size);
+            }
+
+            break;
+        case nssStringType_PHGString:
+            /*
+             * PHGString is an IA5String (with case-insensitive comparisons).
+             * IA5 is ~almost~ ascii; ascii has dollar-sign where IA5 has
+             * currency symbol.
+             */
+            nss_SetError(NSS_ERROR_INTERNAL_ERROR); /* unimplemented */
+            break;
+        case nssStringType_GeneralString:
+            nss_SetError(NSS_ERROR_INTERNAL_ERROR); /* unimplemented */
+            break;
+        default:
+            nss_SetError(NSS_ERROR_UNSUPPORTED_TYPE);
+            break;
+    }
+
+    return rv;
+}
+
+NSS_IMPLEMENT NSSItem *
+nssUTF8_GetEncoding(NSSArena *arenaOpt, NSSItem *rvOpt, nssStringType type,
+                    NSSUTF8 *string)
+{
+    NSSItem *rv = (NSSItem *)NULL;
+    PRStatus status = PR_SUCCESS;
+
+#ifdef NSSDEBUG
+    if ((NSSArena *)NULL != arenaOpt) {
+        if (PR_SUCCESS != nssArena_verifyPointer(arenaOpt)) {
+            return (NSSItem *)NULL;
+        }
+    }
+
+    if ((NSSUTF8 *)NULL == string) {
+        nss_SetError(NSS_ERROR_INVALID_POINTER);
+        return (NSSItem *)NULL;
+    }
+#endif /* NSSDEBUG */
+
+    switch (type) {
+        case nssStringType_DirectoryString:
+            nss_SetError(NSS_ERROR_INTERNAL_ERROR); /* unimplemented */
+            break;
+        case nssStringType_TeletexString:
+            nss_SetError(NSS_ERROR_INTERNAL_ERROR); /* unimplemented */
+            break;
+        case nssStringType_PrintableString:
+            nss_SetError(NSS_ERROR_INTERNAL_ERROR); /* unimplemented */
+            break;
+        case nssStringType_UniversalString:
+            nss_SetError(NSS_ERROR_INTERNAL_ERROR); /* unimplemented */
+            break;
+        case nssStringType_BMPString:
+            nss_SetError(NSS_ERROR_INTERNAL_ERROR); /* unimplemented */
+            break;
+        case nssStringType_UTF8String: {
+            NSSUTF8 *dup = nssUTF8_Duplicate(string, arenaOpt);
+            if ((NSSUTF8 *)NULL == dup) {
+                return (NSSItem *)NULL;
+            }
+
+            if ((NSSItem *)NULL == rvOpt) {
+                rv = nss_ZNEW(arenaOpt, NSSItem);
+                if ((NSSItem *)NULL == rv) {
+                    (void)nss_ZFreeIf(dup);
+                    return (NSSItem *)NULL;
+                }
+            } else {
+                rv = rvOpt;
+            }
+
+            rv->data = dup;
+            dup = (NSSUTF8 *)NULL;
+            rv->size = nssUTF8_Size(rv->data, &status);
+            if ((0 == rv->size) && (PR_SUCCESS != status)) {
+                if ((NSSItem *)NULL == rvOpt) {
+                    (void)nss_ZFreeIf(rv);
+                }
+                return (NSSItem *)NULL;
+            }
+        } break;
+        case nssStringType_PHGString:
+            nss_SetError(NSS_ERROR_INTERNAL_ERROR); /* unimplemented */
+            break;
+        default:
+            nss_SetError(NSS_ERROR_UNSUPPORTED_TYPE);
+            break;
+    }
+
+    return rv;
+}
+
+/*
+ * nssUTF8_CopyIntoFixedBuffer
+ *
+ * This will copy a UTF8 string into a fixed-length buffer, making
+ * sure that the all characters are valid.  Any remaining space will
+ * be padded with the specified ASCII character, typically either
+ * null or space.
+ *
+ * Blah, blah, blah.
+ */
+
+NSS_IMPLEMENT PRStatus
+nssUTF8_CopyIntoFixedBuffer(NSSUTF8 *string, char *buffer, PRUint32 bufferSize,
+                            char pad)
+{
+    PRUint32 stringSize = 0;
+
+#ifdef NSSDEBUG
+    if ((char *)NULL == buffer) {
+        nss_SetError(NSS_ERROR_INVALID_POINTER);
+        return PR_FALSE;
+    }
+
+    if (0 == bufferSize) {
+        nss_SetError(NSS_ERROR_INVALID_ARGUMENT);
+        return PR_FALSE;
+    }
+
+    if ((pad & 0x80) != 0x00) {
+        nss_SetError(NSS_ERROR_INVALID_ARGUMENT);
+        return PR_FALSE;
+    }
+#endif /* NSSDEBUG */
+
+    if ((NSSUTF8 *)NULL == string) {
+        string = (NSSUTF8 *)"";
+    }
+
+    stringSize = nssUTF8_Size(string, (PRStatus *)NULL);
+    stringSize--; /* don't count the trailing null */
+    if (stringSize > bufferSize) {
+        PRUint32 bs = bufferSize;
+        (void)nsslibc_memcpy(buffer, string, bufferSize);
+
+        if ((((buffer[bs - 1] & 0x80) == 0x00)) ||
+            ((bs > 1) && ((buffer[bs - 2] & 0xE0) == 0xC0)) ||
+            ((bs > 2) && ((buffer[bs - 3] & 0xF0) == 0xE0)) ||
+            ((bs > 3) && ((buffer[bs - 4] & 0xF8) == 0xF0)) ||
+            ((bs > 4) && ((buffer[bs - 5] & 0xFC) == 0xF8)) ||
+            ((bs > 5) && ((buffer[bs - 6] & 0xFE) == 0xFC))) {
+            /* It fit exactly */
+            return PR_SUCCESS;
+        }
+
+        /* Too long.  We have to trim the last character */
+        for (/*bs*/; bs != 0; bs--) {
+            if ((buffer[bs - 1] & 0xC0) != 0x80) {
+                buffer[bs - 1] = pad;
+                break;
+            } else {
+                buffer[bs - 1] = pad;
+            }
+        }
+    } else {
+        (void)nsslibc_memset(buffer, pad, bufferSize);
+        (void)nsslibc_memcpy(buffer, string, stringSize);
+    }
+
+    return PR_SUCCESS;
+}
+
+/*
+ * nssUTF8_Equal
+ *
+ */
+
+NSS_IMPLEMENT PRBool
+nssUTF8_Equal(const NSSUTF8 *a, const NSSUTF8 *b, PRStatus *statusOpt)
+{
+    PRUint32 la, lb;
+
+#ifdef NSSDEBUG
+    if (((const NSSUTF8 *)NULL == a) || ((const NSSUTF8 *)NULL == b)) {
+        nss_SetError(NSS_ERROR_INVALID_POINTER);
+        if ((PRStatus *)NULL != statusOpt) {
+            *statusOpt = PR_FAILURE;
+        }
+        return PR_FALSE;
+    }
+#endif /* NSSDEBUG */
+
+    la = nssUTF8_Size(a, statusOpt);
+    if (0 == la) {
+        return PR_FALSE;
+    }
+
+    lb = nssUTF8_Size(b, statusOpt);
+    if (0 == lb) {
+        return PR_FALSE;
+    }
+
+    if (la != lb) {
+        return PR_FALSE;
+    }
+
+    return nsslibc_memequal(a, b, la, statusOpt);
+}