Upgrade openssl from 1.1.0e to 1.1.1b, with source code. 4.0.78

trunk/3rdparty/openssl-1.1-fit/crypto/asn1/a_strex.c

@@ -0,0 +1,626 @@
+/*
+ * Copyright 2000-2018 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the OpenSSL license (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include "internal/cryptlib.h"
+#include "internal/asn1_int.h"
+#include <openssl/crypto.h>
+#include <openssl/x509.h>
+#include <openssl/asn1.h>
+
+#include "charmap.h"
+
+/*
+ * ASN1_STRING_print_ex() and X509_NAME_print_ex(). Enhanced string and name
+ * printing routines handling multibyte characters, RFC2253 and a host of
+ * other options.
+ */
+
+#define CHARTYPE_BS_ESC         (ASN1_STRFLGS_ESC_2253 | CHARTYPE_FIRST_ESC_2253 | CHARTYPE_LAST_ESC_2253)
+
+#define ESC_FLAGS (ASN1_STRFLGS_ESC_2253 | \
+                  ASN1_STRFLGS_ESC_2254 | \
+                  ASN1_STRFLGS_ESC_QUOTE | \
+                  ASN1_STRFLGS_ESC_CTRL | \
+                  ASN1_STRFLGS_ESC_MSB)
+
+/*
+ * Three IO functions for sending data to memory, a BIO and and a FILE
+ * pointer.
+ */
+static int send_bio_chars(void *arg, const void *buf, int len)
+{
+    if (!arg)
+        return 1;
+    if (BIO_write(arg, buf, len) != len)
+        return 0;
+    return 1;
+}
+
+#ifndef OPENSSL_NO_STDIO
+static int send_fp_chars(void *arg, const void *buf, int len)
+{
+    if (!arg)
+        return 1;
+    if (fwrite(buf, 1, len, arg) != (unsigned int)len)
+        return 0;
+    return 1;
+}
+#endif
+
+typedef int char_io (void *arg, const void *buf, int len);
+
+/*
+ * This function handles display of strings, one character at a time. It is
+ * passed an unsigned long for each character because it could come from 2 or
+ * even 4 byte forms.
+ */
+
+static int do_esc_char(unsigned long c, unsigned short flags, char *do_quotes,
+                       char_io *io_ch, void *arg)
+{
+    unsigned short chflgs;
+    unsigned char chtmp;
+    char tmphex[HEX_SIZE(long) + 3];
+
+    if (c > 0xffffffffL)
+        return -1;
+    if (c > 0xffff) {
+        BIO_snprintf(tmphex, sizeof(tmphex), "\\W%08lX", c);
+        if (!io_ch(arg, tmphex, 10))
+            return -1;
+        return 10;
+    }
+    if (c > 0xff) {
+        BIO_snprintf(tmphex, sizeof(tmphex), "\\U%04lX", c);
+        if (!io_ch(arg, tmphex, 6))
+            return -1;
+        return 6;
+    }
+    chtmp = (unsigned char)c;
+    if (chtmp > 0x7f)
+        chflgs = flags & ASN1_STRFLGS_ESC_MSB;
+    else
+        chflgs = char_type[chtmp] & flags;
+    if (chflgs & CHARTYPE_BS_ESC) {
+        /* If we don't escape with quotes, signal we need quotes */
+        if (chflgs & ASN1_STRFLGS_ESC_QUOTE) {
+            if (do_quotes)
+                *do_quotes = 1;
+            if (!io_ch(arg, &chtmp, 1))
+                return -1;
+            return 1;
+        }
+        if (!io_ch(arg, "\\", 1))
+            return -1;
+        if (!io_ch(arg, &chtmp, 1))
+            return -1;
+        return 2;
+    }
+    if (chflgs & (ASN1_STRFLGS_ESC_CTRL
+                  | ASN1_STRFLGS_ESC_MSB
+                  | ASN1_STRFLGS_ESC_2254)) {
+        BIO_snprintf(tmphex, 11, "\\%02X", chtmp);
+        if (!io_ch(arg, tmphex, 3))
+            return -1;
+        return 3;
+    }
+    /*
+     * If we get this far and do any escaping at all must escape the escape
+     * character itself: backslash.
+     */
+    if (chtmp == '\\' && (flags & ESC_FLAGS)) {
+        if (!io_ch(arg, "\\\\", 2))
+            return -1;
+        return 2;
+    }
+    if (!io_ch(arg, &chtmp, 1))
+        return -1;
+    return 1;
+}
+
+#define BUF_TYPE_WIDTH_MASK     0x7
+#define BUF_TYPE_CONVUTF8       0x8
+
+/*
+ * This function sends each character in a buffer to do_esc_char(). It
+ * interprets the content formats and converts to or from UTF8 as
+ * appropriate.
+ */
+
+static int do_buf(unsigned char *buf, int buflen,
+                  int type, unsigned short flags, char *quotes, char_io *io_ch,
+                  void *arg)
+{
+    int i, outlen, len, charwidth;
+    unsigned short orflags;
+    unsigned char *p, *q;
+    unsigned long c;
+
+    p = buf;
+    q = buf + buflen;
+    outlen = 0;
+    charwidth = type & BUF_TYPE_WIDTH_MASK;
+
+    switch (charwidth) {
+    case 4:
+        if (buflen & 3) {
+            ASN1err(ASN1_F_DO_BUF, ASN1_R_INVALID_UNIVERSALSTRING_LENGTH);
+            return -1;
+        }
+        break;
+    case 2:
+        if (buflen & 1) {
+            ASN1err(ASN1_F_DO_BUF, ASN1_R_INVALID_BMPSTRING_LENGTH);
+            return -1;
+        }
+        break;
+    default:
+        break;
+    }
+
+    while (p != q) {
+        if (p == buf && flags & ASN1_STRFLGS_ESC_2253)
+            orflags = CHARTYPE_FIRST_ESC_2253;
+        else
+            orflags = 0;
+
+        switch (charwidth) {
+        case 4:
+            c = ((unsigned long)*p++) << 24;
+            c |= ((unsigned long)*p++) << 16;
+            c |= ((unsigned long)*p++) << 8;
+            c |= *p++;
+            break;
+
+        case 2:
+            c = ((unsigned long)*p++) << 8;
+            c |= *p++;
+            break;
+
+        case 1:
+            c = *p++;
+            break;
+
+        case 0:
+            i = UTF8_getc(p, buflen, &c);
+            if (i < 0)
+                return -1;      /* Invalid UTF8String */
+            buflen -= i;
+            p += i;
+            break;
+        default:
+            return -1;          /* invalid width */
+        }
+        if (p == q && flags & ASN1_STRFLGS_ESC_2253)
+            orflags = CHARTYPE_LAST_ESC_2253;
+        if (type & BUF_TYPE_CONVUTF8) {
+            unsigned char utfbuf[6];
+            int utflen;
+            utflen = UTF8_putc(utfbuf, sizeof(utfbuf), c);
+            for (i = 0; i < utflen; i++) {
+                /*
+                 * We don't need to worry about setting orflags correctly
+                 * because if utflen==1 its value will be correct anyway
+                 * otherwise each character will be > 0x7f and so the
+                 * character will never be escaped on first and last.
+                 */
+                len = do_esc_char(utfbuf[i], flags | orflags, quotes,
+                                  io_ch, arg);
+                if (len < 0)
+                    return -1;
+                outlen += len;
+            }
+        } else {
+            len = do_esc_char(c, flags | orflags, quotes,
+                              io_ch, arg);
+            if (len < 0)
+                return -1;
+            outlen += len;
+        }
+    }
+    return outlen;
+}
+
+/* This function hex dumps a buffer of characters */
+
+static int do_hex_dump(char_io *io_ch, void *arg, unsigned char *buf,
+                       int buflen)
+{
+    static const char hexdig[] = "0123456789ABCDEF";
+    unsigned char *p, *q;
+    char hextmp[2];
+    if (arg) {
+        p = buf;
+        q = buf + buflen;
+        while (p != q) {
+            hextmp[0] = hexdig[*p >> 4];
+            hextmp[1] = hexdig[*p & 0xf];
+            if (!io_ch(arg, hextmp, 2))
+                return -1;
+            p++;
+        }
+    }
+    return buflen << 1;
+}
+
+/*
+ * "dump" a string. This is done when the type is unknown, or the flags
+ * request it. We can either dump the content octets or the entire DER
+ * encoding. This uses the RFC2253 #01234 format.
+ */
+
+static int do_dump(unsigned long lflags, char_io *io_ch, void *arg,
+                   const ASN1_STRING *str)
+{
+    /*
+     * Placing the ASN1_STRING in a temp ASN1_TYPE allows the DER encoding to
+     * readily obtained
+     */
+    ASN1_TYPE t;
+    unsigned char *der_buf, *p;
+    int outlen, der_len;
+
+    if (!io_ch(arg, "#", 1))
+        return -1;
+    /* If we don't dump DER encoding just dump content octets */
+    if (!(lflags & ASN1_STRFLGS_DUMP_DER)) {
+        outlen = do_hex_dump(io_ch, arg, str->data, str->length);
+        if (outlen < 0)
+            return -1;
+        return outlen + 1;
+    }
+    t.type = str->type;
+    t.value.ptr = (char *)str;
+    der_len = i2d_ASN1_TYPE(&t, NULL);
+    if ((der_buf = OPENSSL_malloc(der_len)) == NULL) {
+        ASN1err(ASN1_F_DO_DUMP, ERR_R_MALLOC_FAILURE);
+        return -1;
+    }
+    p = der_buf;
+    i2d_ASN1_TYPE(&t, &p);
+    outlen = do_hex_dump(io_ch, arg, der_buf, der_len);
+    OPENSSL_free(der_buf);
+    if (outlen < 0)
+        return -1;
+    return outlen + 1;
+}
+
+/*
+ * Lookup table to convert tags to character widths, 0 = UTF8 encoded, -1 is
+ * used for non string types otherwise it is the number of bytes per
+ * character
+ */
+
+static const signed char tag2nbyte[] = {
+    -1, -1, -1, -1, -1,         /* 0-4 */
+    -1, -1, -1, -1, -1,         /* 5-9 */
+    -1, -1,                     /* 10-11 */
+     0,                         /* 12 V_ASN1_UTF8STRING */
+    -1, -1, -1, -1, -1,         /* 13-17 */
+     1,                         /* 18 V_ASN1_NUMERICSTRING */
+     1,                         /* 19 V_ASN1_PRINTABLESTRING */
+     1,                         /* 20 V_ASN1_T61STRING */
+    -1,                         /* 21 */
+     1,                         /* 22 V_ASN1_IA5STRING */
+     1,                         /* 23 V_ASN1_UTCTIME */
+     1,                         /* 24 V_ASN1_GENERALIZEDTIME */
+    -1,                         /* 25 */
+     1,                         /* 26 V_ASN1_ISO64STRING */
+    -1,                         /* 27 */
+     4,                         /* 28 V_ASN1_UNIVERSALSTRING */
+    -1,                         /* 29 */
+     2                          /* 30 V_ASN1_BMPSTRING */
+};
+
+/*
+ * This is the main function, print out an ASN1_STRING taking note of various
+ * escape and display options. Returns number of characters written or -1 if
+ * an error occurred.
+ */
+
+static int do_print_ex(char_io *io_ch, void *arg, unsigned long lflags,
+                       const ASN1_STRING *str)
+{
+    int outlen, len;
+    int type;
+    char quotes;
+    unsigned short flags;
+    quotes = 0;
+    /* Keep a copy of escape flags */
+    flags = (unsigned short)(lflags & ESC_FLAGS);
+
+    type = str->type;
+
+    outlen = 0;
+
+    if (lflags & ASN1_STRFLGS_SHOW_TYPE) {
+        const char *tagname;
+        tagname = ASN1_tag2str(type);
+        outlen += strlen(tagname);
+        if (!io_ch(arg, tagname, outlen) || !io_ch(arg, ":", 1))
+            return -1;
+        outlen++;
+    }
+
+    /* Decide what to do with type, either dump content or display it */
+
+    /* Dump everything */
+    if (lflags & ASN1_STRFLGS_DUMP_ALL)
+        type = -1;
+    /* Ignore the string type */
+    else if (lflags & ASN1_STRFLGS_IGNORE_TYPE)
+        type = 1;
+    else {
+        /* Else determine width based on type */
+        if ((type > 0) && (type < 31))
+            type = tag2nbyte[type];
+        else
+            type = -1;
+        if ((type == -1) && !(lflags & ASN1_STRFLGS_DUMP_UNKNOWN))
+            type = 1;
+    }
+
+    if (type == -1) {
+        len = do_dump(lflags, io_ch, arg, str);
+        if (len < 0)
+            return -1;
+        outlen += len;
+        return outlen;
+    }
+
+    if (lflags & ASN1_STRFLGS_UTF8_CONVERT) {
+        /*
+         * Note: if string is UTF8 and we want to convert to UTF8 then we
+         * just interpret it as 1 byte per character to avoid converting
+         * twice.
+         */
+        if (!type)
+            type = 1;
+        else
+            type |= BUF_TYPE_CONVUTF8;
+    }
+
+    len = do_buf(str->data, str->length, type, flags, &quotes, io_ch, NULL);
+    if (len < 0)
+        return -1;
+    outlen += len;
+    if (quotes)
+        outlen += 2;
+    if (!arg)
+        return outlen;
+    if (quotes && !io_ch(arg, "\"", 1))
+        return -1;
+    if (do_buf(str->data, str->length, type, flags, NULL, io_ch, arg) < 0)
+        return -1;
+    if (quotes && !io_ch(arg, "\"", 1))
+        return -1;
+    return outlen;
+}
+
+/* Used for line indenting: print 'indent' spaces */
+
+static int do_indent(char_io *io_ch, void *arg, int indent)
+{
+    int i;
+    for (i = 0; i < indent; i++)
+        if (!io_ch(arg, " ", 1))
+            return 0;
+    return 1;
+}
+
+#define FN_WIDTH_LN     25
+#define FN_WIDTH_SN     10
+
+static int do_name_ex(char_io *io_ch, void *arg, const X509_NAME *n,
+                      int indent, unsigned long flags)
+{
+    int i, prev = -1, orflags, cnt;
+    int fn_opt, fn_nid;
+    ASN1_OBJECT *fn;
+    const ASN1_STRING *val;
+    const X509_NAME_ENTRY *ent;
+    char objtmp[80];
+    const char *objbuf;
+    int outlen, len;
+    char *sep_dn, *sep_mv, *sep_eq;
+    int sep_dn_len, sep_mv_len, sep_eq_len;
+    if (indent < 0)
+        indent = 0;
+    outlen = indent;
+    if (!do_indent(io_ch, arg, indent))
+        return -1;
+    switch (flags & XN_FLAG_SEP_MASK) {
+    case XN_FLAG_SEP_MULTILINE:
+        sep_dn = "\n";
+        sep_dn_len = 1;
+        sep_mv = " + ";
+        sep_mv_len = 3;
+        break;
+
+    case XN_FLAG_SEP_COMMA_PLUS:
+        sep_dn = ",";
+        sep_dn_len = 1;
+        sep_mv = "+";
+        sep_mv_len = 1;
+        indent = 0;
+        break;
+
+    case XN_FLAG_SEP_CPLUS_SPC:
+        sep_dn = ", ";
+        sep_dn_len = 2;
+        sep_mv = " + ";
+        sep_mv_len = 3;
+        indent = 0;
+        break;
+
+    case XN_FLAG_SEP_SPLUS_SPC:
+        sep_dn = "; ";
+        sep_dn_len = 2;
+        sep_mv = " + ";
+        sep_mv_len = 3;
+        indent = 0;
+        break;
+
+    default:
+        return -1;
+    }
+
+    if (flags & XN_FLAG_SPC_EQ) {
+        sep_eq = " = ";
+        sep_eq_len = 3;
+    } else {
+        sep_eq = "=";
+        sep_eq_len = 1;
+    }
+
+    fn_opt = flags & XN_FLAG_FN_MASK;
+
+    cnt = X509_NAME_entry_count(n);
+    for (i = 0; i < cnt; i++) {
+        if (flags & XN_FLAG_DN_REV)
+            ent = X509_NAME_get_entry(n, cnt - i - 1);
+        else
+            ent = X509_NAME_get_entry(n, i);
+        if (prev != -1) {
+            if (prev == X509_NAME_ENTRY_set(ent)) {
+                if (!io_ch(arg, sep_mv, sep_mv_len))
+                    return -1;
+                outlen += sep_mv_len;
+            } else {
+                if (!io_ch(arg, sep_dn, sep_dn_len))
+                    return -1;
+                outlen += sep_dn_len;
+                if (!do_indent(io_ch, arg, indent))
+                    return -1;
+                outlen += indent;
+            }
+        }
+        prev = X509_NAME_ENTRY_set(ent);
+        fn = X509_NAME_ENTRY_get_object(ent);
+        val = X509_NAME_ENTRY_get_data(ent);
+        fn_nid = OBJ_obj2nid(fn);
+        if (fn_opt != XN_FLAG_FN_NONE) {
+            int objlen, fld_len;
+            if ((fn_opt == XN_FLAG_FN_OID) || (fn_nid == NID_undef)) {
+                OBJ_obj2txt(objtmp, sizeof(objtmp), fn, 1);
+                fld_len = 0;    /* XXX: what should this be? */
+                objbuf = objtmp;
+            } else {
+                if (fn_opt == XN_FLAG_FN_SN) {
+                    fld_len = FN_WIDTH_SN;
+                    objbuf = OBJ_nid2sn(fn_nid);
+                } else if (fn_opt == XN_FLAG_FN_LN) {
+                    fld_len = FN_WIDTH_LN;
+                    objbuf = OBJ_nid2ln(fn_nid);
+                } else {
+                    fld_len = 0; /* XXX: what should this be? */
+                    objbuf = "";
+                }
+            }
+            objlen = strlen(objbuf);
+            if (!io_ch(arg, objbuf, objlen))
+                return -1;
+            if ((objlen < fld_len) && (flags & XN_FLAG_FN_ALIGN)) {
+                if (!do_indent(io_ch, arg, fld_len - objlen))
+                    return -1;
+                outlen += fld_len - objlen;
+            }
+            if (!io_ch(arg, sep_eq, sep_eq_len))
+                return -1;
+            outlen += objlen + sep_eq_len;
+        }
+        /*
+         * If the field name is unknown then fix up the DER dump flag. We
+         * might want to limit this further so it will DER dump on anything
+         * other than a few 'standard' fields.
+         */
+        if ((fn_nid == NID_undef) && (flags & XN_FLAG_DUMP_UNKNOWN_FIELDS))
+            orflags = ASN1_STRFLGS_DUMP_ALL;
+        else
+            orflags = 0;
+
+        len = do_print_ex(io_ch, arg, flags | orflags, val);
+        if (len < 0)
+            return -1;
+        outlen += len;
+    }
+    return outlen;
+}
+
+/* Wrappers round the main functions */
+
+int X509_NAME_print_ex(BIO *out, const X509_NAME *nm, int indent,
+                       unsigned long flags)
+{
+    if (flags == XN_FLAG_COMPAT)
+        return X509_NAME_print(out, nm, indent);
+    return do_name_ex(send_bio_chars, out, nm, indent, flags);
+}
+
+#ifndef OPENSSL_NO_STDIO
+int X509_NAME_print_ex_fp(FILE *fp, const X509_NAME *nm, int indent,
+                          unsigned long flags)
+{
+    if (flags == XN_FLAG_COMPAT) {
+        BIO *btmp;
+        int ret;
+        btmp = BIO_new_fp(fp, BIO_NOCLOSE);
+        if (!btmp)
+            return -1;
+        ret = X509_NAME_print(btmp, nm, indent);
+        BIO_free(btmp);
+        return ret;
+    }
+    return do_name_ex(send_fp_chars, fp, nm, indent, flags);
+}
+#endif
+
+int ASN1_STRING_print_ex(BIO *out, const ASN1_STRING *str, unsigned long flags)
+{
+    return do_print_ex(send_bio_chars, out, flags, str);
+}
+
+#ifndef OPENSSL_NO_STDIO
+int ASN1_STRING_print_ex_fp(FILE *fp, const ASN1_STRING *str, unsigned long flags)
+{
+    return do_print_ex(send_fp_chars, fp, flags, str);
+}
+#endif
+
+/*
+ * Utility function: convert any string type to UTF8, returns number of bytes
+ * in output string or a negative error code
+ */
+
+int ASN1_STRING_to_UTF8(unsigned char **out, const ASN1_STRING *in)
+{
+    ASN1_STRING stmp, *str = &stmp;
+    int mbflag, type, ret;
+    if (!in)
+        return -1;
+    type = in->type;
+    if ((type < 0) || (type > 30))
+        return -1;
+    mbflag = tag2nbyte[type];
+    if (mbflag == -1)
+        return -1;
+    mbflag |= MBSTRING_FLAG;
+    stmp.data = NULL;
+    stmp.length = 0;
+    stmp.flags = 0;
+    ret =
+        ASN1_mbstring_copy(&str, in->data, in->length, mbflag,
+                           B_ASN1_UTF8STRING);
+    if (ret < 0)
+        return ret;
+    *out = stmp.data;
+    return stmp.length;
+}