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Diffstat (limited to 'keyexchange/isakmpd-20041012/field.c')
| -rw-r--r-- | keyexchange/isakmpd-20041012/field.c | 252 |
1 files changed, 0 insertions, 252 deletions
diff --git a/keyexchange/isakmpd-20041012/field.c b/keyexchange/isakmpd-20041012/field.c deleted file mode 100644 index 0cc96d2..0000000 --- a/keyexchange/isakmpd-20041012/field.c +++ /dev/null @@ -1,252 +0,0 @@ -/* $OpenBSD: field.c,v 1.16 2004/06/14 09:55:41 ho Exp $ */ -/* $EOM: field.c,v 1.11 2000/02/20 19:58:37 niklas Exp $ */ - -/* - * Copyright (c) 1998, 1999 Niklas Hallqvist. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES - * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. - * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT - * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF - * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -/* - * This code was written under funding by Ericsson Radio Systems. - */ - -#include <stdio.h> -#include <stdlib.h> -#include <string.h> - -#include "sysdep.h" - -#include "constants.h" -#include "field.h" -#include "log.h" -#include "util.h" - -static char *field_debug_raw(u_int8_t *, size_t, struct constant_map **); -static char *field_debug_num(u_int8_t *, size_t, struct constant_map **); -static char *field_debug_mask(u_int8_t *, size_t, struct constant_map **); -static char *field_debug_ign(u_int8_t *, size_t, struct constant_map **); -static char *field_debug_cst(u_int8_t *, size_t, struct constant_map **); - -/* Contents must match the enum in struct field. */ -static char *(*decode_field[]) (u_int8_t *, size_t, - struct constant_map **) = { - field_debug_raw, - field_debug_num, - field_debug_mask, - field_debug_ign, - field_debug_cst -}; - -/* - * Return a string showing the hexadecimal contents of the LEN-sized buffer - * BUF. MAPS should be zero and is only here because the API requires it. - */ -static char * -field_debug_raw(u_int8_t *buf, size_t len, struct constant_map **maps) -{ - char *retval, *p; - - if (len == 0) - return 0; - retval = malloc(3 + len * 2); - if (!retval) - return 0; - strlcpy(retval, "0x", 3 + len * 2); - p = retval + 2; - for (; len > 0; len--) { - snprintf(p, 1 + len * 2, "%02x", *buf++); - p += 2; - } - return retval; -} - -/* - * Convert the unsigned LEN-sized number at BUF of network byteorder to a - * 32-bit unsigned integer of host byteorder pointed to by VAL. - */ -static int -extract_val(u_int8_t *buf, size_t len, u_int32_t *val) -{ - switch (len) { - case 1: - *val = *buf; - break; - case 2: - *val = decode_16(buf); - break; - case 4: - *val = decode_32(buf); - break; - default: - return -1; - } - return 0; -} - -/* - * Return a textual representation of the unsigned number pointed to by BUF - * which is LEN octets long. MAPS should be zero and is only here because - * the API requires it. - */ -static char * -field_debug_num(u_int8_t *buf, size_t len, struct constant_map **maps) -{ - char *retval; - u_int32_t val; - - if (extract_val(buf, len, &val)) - return 0; - /* 3 decimal digits are enough to represent each byte. */ - retval = malloc(3 * len); - snprintf(retval, 3 * len, "%u", val); - return retval; -} - -/* - * Return the symbolic names of the flags pointed to by BUF which is LEN - * octets long, using the constant maps MAPS. - */ -static char * -field_debug_mask(u_int8_t *buf, size_t len, struct constant_map **maps) -{ - u_int32_t val; - u_int32_t bit; - char *retval, *new_buf, *name; - size_t buf_sz; - - if (extract_val(buf, len, &val)) - return 0; - - /* Size for brackets, two spaces and a NUL terminator. */ - buf_sz = 4; - retval = malloc(buf_sz); - if (!retval) - return 0; - - strlcpy(retval, "[ ", buf_sz); - for (bit = 1; bit; bit <<= 1) { - if (val & bit) { - name = constant_name_maps(maps, bit); - buf_sz += strlen(name) + 1; - new_buf = realloc(retval, buf_sz); - if (!new_buf) { - free(retval); - return 0; - } - retval = new_buf; - strlcat(retval, name, buf_sz); - strlcat(retval, " ", buf_sz); - } - } - strlcat(retval, "]", buf_sz); - return retval; -} - -/* - * Just a dummy needed to skip the unused LEN sized space at BUF. MAPS - * should be zero and is only here because the API requires it. - */ -static char * -field_debug_ign(u_int8_t *buf, size_t len, struct constant_map **maps) -{ - return 0; -} - -/* - * Return the symbolic name of a constant pointed to by BUF which is LEN - * octets long, using the constant maps MAPS. - */ -static char * -field_debug_cst(u_int8_t *buf, size_t len, struct constant_map **maps) -{ - u_int32_t val; - - if (extract_val(buf, len, &val)) - return 0; - - return strdup(constant_name_maps(maps, val)); -} - -/* Pretty-print a field from BUF as described by F. */ -void -field_dump_field(struct field *f, u_int8_t *buf) -{ - char *value; - - value = decode_field[(int) f->type] (buf + f->offset, f->len, f->maps); - if (value) { - LOG_DBG((LOG_MESSAGE, 70, "%s: %s", f->name, value)); - free(value); - } -} - -/* Pretty-print all the fields of BUF as described in FIELDS. */ -void -field_dump_payload(struct field *fields, u_int8_t *buf) -{ - struct field *field; - - for (field = fields; field->name; field++) - field_dump_field(field, buf); -} - -/* Return the numeric value of the field F of BUF. */ -u_int32_t -field_get_num(struct field *f, u_int8_t *buf) -{ - u_int32_t val; - - if (extract_val(buf + f->offset, f->len, &val)) - return 0; - return val; -} - -/* Stash the number VAL into BUF's field F. */ -void -field_set_num(struct field *f, u_int8_t *buf, u_int32_t val) -{ - switch (f->len) { - case 1: - buf[f->offset] = val; - break; - case 2: - encode_16(buf + f->offset, val); - break; - case 4: - encode_32(buf + f->offset, val); - break; - } -} - -/* Stash BUF's raw field F into VAL. */ -void -field_get_raw(struct field *f, u_int8_t *buf, u_int8_t *val) -{ - memcpy(val, buf + f->offset, f->len); -} - -/* Stash the buffer VAL into BUF's field F. */ -void -field_set_raw(struct field *f, u_int8_t *buf, u_int8_t *val) -{ - memcpy(buf + f->offset, val, f->len); -} |