Orange Pi5 kernel

#include <netinet/in.h>
#ifdef __sun__
#include <inttypes.h>
#else
#include <stdint.h>
#endif
#include <ctype.h>
#include <errno.h>
#include <string.h>
#include <limits.h>
#include "modpost.h"
 
/*
 * Stolen form Cryptographic API.
 *
 * MD4 Message Digest Algorithm (RFC1320).
 *
 * Implementation derived from Andrew Tridgell and Steve French's
 * CIFS MD4 implementation, and the cryptoapi implementation
 * originally based on the public domain implementation written
 * by Colin Plumb in 1993.
 *
 * Copyright (c) Andrew Tridgell 1997-1998.
 * Modified by Steve French (sfrench@us.ibm.com) 2002
 * Copyright (c) Cryptoapi developers.
 * Copyright (c) 2002 David S. Miller (davem@redhat.com)
 * Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 */
#define MD4_DIGEST_SIZE		16
#define MD4_HMAC_BLOCK_SIZE	64
#define MD4_BLOCK_WORDS		16
#define MD4_HASH_WORDS		4
 
struct md4_ctx {
<------>uint32_t hash[MD4_HASH_WORDS];
<------>uint32_t block[MD4_BLOCK_WORDS];
<------>uint64_t byte_count;
};
 
static inline uint32_t lshift(uint32_t x, unsigned int s)
{
<------>x &= 0xFFFFFFFF;
<------>return ((x << s) & 0xFFFFFFFF) | (x >> (32 - s));
}
 
static inline uint32_t F(uint32_t x, uint32_t y, uint32_t z)
{
<------>return (x & y) | ((~x) & z);
}
 
static inline uint32_t G(uint32_t x, uint32_t y, uint32_t z)
{
<------>return (x & y) | (x & z) | (y & z);
}
 
static inline uint32_t H(uint32_t x, uint32_t y, uint32_t z)
{
<------>return x ^ y ^ z;
}
 
#define ROUND1(a,b,c,d,k,s) (a = lshift(a + F(b,c,d) + k, s))
#define ROUND2(a,b,c,d,k,s) (a = lshift(a + G(b,c,d) + k + (uint32_t)0x5A827999,s))
#define ROUND3(a,b,c,d,k,s) (a = lshift(a + H(b,c,d) + k + (uint32_t)0x6ED9EBA1,s))
 
/* XXX: this stuff can be optimized */
static inline void le32_to_cpu_array(uint32_t *buf, unsigned int words)
{
<------>while (words--) {
<------><------>*buf = ntohl(*buf);
<------><------>buf++;
<------>}
}
 
static inline void cpu_to_le32_array(uint32_t *buf, unsigned int words)
{
<------>while (words--) {
<------><------>*buf = htonl(*buf);
<------><------>buf++;
<------>}
}
 
static void md4_transform(uint32_t *hash, uint32_t const *in)
{
<------>uint32_t a, b, c, d;
 
<------>a = hash[0];
<------>b = hash[1];
<------>c = hash[2];
<------>d = hash[3];
 
<------>ROUND1(a, b, c, d, in[0], 3);
<------>ROUND1(d, a, b, c, in[1], 7);
<------>ROUND1(c, d, a, b, in[2], 11);
<------>ROUND1(b, c, d, a, in[3], 19);
<------>ROUND1(a, b, c, d, in[4], 3);
<------>ROUND1(d, a, b, c, in[5], 7);
<------>ROUND1(c, d, a, b, in[6], 11);
<------>ROUND1(b, c, d, a, in[7], 19);
<------>ROUND1(a, b, c, d, in[8], 3);
<------>ROUND1(d, a, b, c, in[9], 7);
<------>ROUND1(c, d, a, b, in[10], 11);
<------>ROUND1(b, c, d, a, in[11], 19);
<------>ROUND1(a, b, c, d, in[12], 3);
<------>ROUND1(d, a, b, c, in[13], 7);
<------>ROUND1(c, d, a, b, in[14], 11);
<------>ROUND1(b, c, d, a, in[15], 19);
 
<------>ROUND2(a, b, c, d,in[ 0], 3);
<------>ROUND2(d, a, b, c, in[4], 5);
<------>ROUND2(c, d, a, b, in[8], 9);
<------>ROUND2(b, c, d, a, in[12], 13);
<------>ROUND2(a, b, c, d, in[1], 3);
<------>ROUND2(d, a, b, c, in[5], 5);
<------>ROUND2(c, d, a, b, in[9], 9);
<------>ROUND2(b, c, d, a, in[13], 13);
<------>ROUND2(a, b, c, d, in[2], 3);
<------>ROUND2(d, a, b, c, in[6], 5);
<------>ROUND2(c, d, a, b, in[10], 9);
<------>ROUND2(b, c, d, a, in[14], 13);
<------>ROUND2(a, b, c, d, in[3], 3);
<------>ROUND2(d, a, b, c, in[7], 5);
<------>ROUND2(c, d, a, b, in[11], 9);
<------>ROUND2(b, c, d, a, in[15], 13);
 
<------>ROUND3(a, b, c, d,in[ 0], 3);
<------>ROUND3(d, a, b, c, in[8], 9);
<------>ROUND3(c, d, a, b, in[4], 11);
<------>ROUND3(b, c, d, a, in[12], 15);
<------>ROUND3(a, b, c, d, in[2], 3);
<------>ROUND3(d, a, b, c, in[10], 9);
<------>ROUND3(c, d, a, b, in[6], 11);
<------>ROUND3(b, c, d, a, in[14], 15);
<------>ROUND3(a, b, c, d, in[1], 3);
<------>ROUND3(d, a, b, c, in[9], 9);
<------>ROUND3(c, d, a, b, in[5], 11);
<------>ROUND3(b, c, d, a, in[13], 15);
<------>ROUND3(a, b, c, d, in[3], 3);
<------>ROUND3(d, a, b, c, in[11], 9);
<------>ROUND3(c, d, a, b, in[7], 11);
<------>ROUND3(b, c, d, a, in[15], 15);
 
<------>hash[0] += a;
<------>hash[1] += b;
<------>hash[2] += c;
<------>hash[3] += d;
}
 
static inline void md4_transform_helper(struct md4_ctx *ctx)
{
<------>le32_to_cpu_array(ctx->block, sizeof(ctx->block) / sizeof(uint32_t));
<------>md4_transform(ctx->hash, ctx->block);
}
 
static void md4_init(struct md4_ctx *mctx)
{
<------>mctx->hash[0] = 0x67452301;
<------>mctx->hash[1] = 0xefcdab89;
<------>mctx->hash[2] = 0x98badcfe;
<------>mctx->hash[3] = 0x10325476;
<------>mctx->byte_count = 0;
}
 
static void md4_update(struct md4_ctx *mctx,
<------><------>       const unsigned char *data, unsigned int len)
{
<------>const uint32_t avail = sizeof(mctx->block) - (mctx->byte_count & 0x3f);
 
<------>mctx->byte_count += len;
 
<------>if (avail > len) {
<------><------>memcpy((char *)mctx->block + (sizeof(mctx->block) - avail),
<------><------>       data, len);
<------><------>return;
<------>}
 
<------>memcpy((char *)mctx->block + (sizeof(mctx->block) - avail),
<------>       data, avail);
 
<------>md4_transform_helper(mctx);
<------>data += avail;
<------>len -= avail;
 
<------>while (len >= sizeof(mctx->block)) {
<------><------>memcpy(mctx->block, data, sizeof(mctx->block));
<------><------>md4_transform_helper(mctx);
<------><------>data += sizeof(mctx->block);
<------><------>len -= sizeof(mctx->block);
<------>}
 
<------>memcpy(mctx->block, data, len);
}
 
static void md4_final_ascii(struct md4_ctx *mctx, char *out, unsigned int len)
{
<------>const unsigned int offset = mctx->byte_count & 0x3f;
<------>char *p = (char *)mctx->block + offset;
<------>int padding = 56 - (offset + 1);
 
<------>*p++ = 0x80;
<------>if (padding < 0) {
<------><------>memset(p, 0x00, padding + sizeof (uint64_t));
<------><------>md4_transform_helper(mctx);
<------><------>p = (char *)mctx->block;
<------><------>padding = 56;
<------>}
 
<------>memset(p, 0, padding);
<------>mctx->block[14] = mctx->byte_count << 3;
<------>mctx->block[15] = mctx->byte_count >> 29;
<------>le32_to_cpu_array(mctx->block, (sizeof(mctx->block) -
<------><------><------>  sizeof(uint64_t)) / sizeof(uint32_t));
<------>md4_transform(mctx->hash, mctx->block);
<------>cpu_to_le32_array(mctx->hash, sizeof(mctx->hash) / sizeof(uint32_t));
 
<------>snprintf(out, len, "%08X%08X%08X%08X",
<------><------> mctx->hash[0], mctx->hash[1], mctx->hash[2], mctx->hash[3]);
}
 
static inline void add_char(unsigned char c, struct md4_ctx *md)
{
<------>md4_update(md, &c, 1);
}
 
static int parse_string(const char *file, unsigned long len,
<------><------><------>struct md4_ctx *md)
{
<------>unsigned long i;
 
<------>add_char(file[0], md);
<------>for (i = 1; i < len; i++) {
<------><------>add_char(file[i], md);
<------><------>if (file[i] == '"' && file[i-1] != '\\')
<------><------><------>break;
<------>}
<------>return i;
}
 
static int parse_comment(const char *file, unsigned long len)
{
<------>unsigned long i;
 
<------>for (i = 2; i < len; i++) {
<------><------>if (file[i-1] == '*' && file[i] == '/')
<------><------><------>break;
<------>}
<------>return i;
}
 
/* FIXME: Handle .s files differently (eg. # starts comments) --RR */
static int parse_file(const char *fname, struct md4_ctx *md)
{
<------>char *file;
<------>unsigned long i, len;
 
<------>file = read_text_file(fname);
<------>len = strlen(file);
 
<------>for (i = 0; i < len; i++) {
<------><------>/* Collapse and ignore \ and CR. */
<------><------>if (file[i] == '\\' && (i+1 < len) && file[i+1] == '\n') {
<------><------><------>i++;
<------><------><------>continue;
<------><------>}
 
<------><------>/* Ignore whitespace */
<------><------>if (isspace(file[i]))
<------><------><------>continue;
 
<------><------>/* Handle strings as whole units */
<------><------>if (file[i] == '"') {
<------><------><------>i += parse_string(file+i, len - i, md);
<------><------><------>continue;
<------><------>}
 
<------><------>/* Comments: ignore */
<------><------>if (file[i] == '/' && file[i+1] == '*') {
<------><------><------>i += parse_comment(file+i, len - i);
<------><------><------>continue;
<------><------>}
 
<------><------>add_char(file[i], md);
<------>}
<------>free(file);
<------>return 1;
}
/* Check whether the file is a static library or not */
static int is_static_library(const char *objfile)
{
<------>int len = strlen(objfile);
<------>if (objfile[len - 2] == '.' && objfile[len - 1] == 'a')
<------><------>return 1;
<------>else
<------><------>return 0;
}
 
/* We have dir/file.o.  Open dir/.file.o.cmd, look for source_ and deps_ line
 * to figure out source files. */
static int parse_source_files(const char *objfile, struct md4_ctx *md)
{
<------>char *cmd, *file, *line, *dir, *pos;
<------>const char *base;
<------>int dirlen, ret = 0, check_files = 0;
 
<------>cmd = NOFAIL(malloc(strlen(objfile) + sizeof("..cmd")));
 
<------>base = strrchr(objfile, '/');
<------>if (base) {
<------><------>base++;
<------><------>dirlen = base - objfile;
<------><------>sprintf(cmd, "%.*s.%s.cmd", dirlen, objfile, base);
<------>} else {
<------><------>dirlen = 0;
<------><------>sprintf(cmd, ".%s.cmd", objfile);
<------>}
<------>dir = NOFAIL(malloc(dirlen + 1));
<------>strncpy(dir, objfile, dirlen);
<------>dir[dirlen] = '\0';
 
<------>file = read_text_file(cmd);
 
<------>pos = file;
 
<------>/* Sum all files in the same dir or subdirs. */
<------>while ((line = get_line(&pos))) {
<------><------>char* p = line;
 
<------><------>if (strncmp(line, "source_", sizeof("source_")-1) == 0) {
<------><------><------>p = strrchr(line, ' ');
<------><------><------>if (!p) {
<------><------><------><------>warn("malformed line: %s\n", line);
<------><------><------><------>goto out_file;
<------><------><------>}
<------><------><------>p++;
<------><------><------>if (!parse_file(p, md)) {
<------><------><------><------>warn("could not open %s: %s\n",
<------><------><------><------>     p, strerror(errno));
<------><------><------><------>goto out_file;
<------><------><------>}
<------><------><------>continue;
<------><------>}
<------><------>if (strncmp(line, "deps_", sizeof("deps_")-1) == 0) {
<------><------><------>check_files = 1;
<------><------><------>continue;
<------><------>}
<------><------>if (!check_files)
<------><------><------>continue;
 
<------><------>/* Continue until line does not end with '\' */
<------><------>if ( *(p + strlen(p)-1) != '\\')
<------><------><------>break;
<------><------>/* Terminate line at first space, to get rid of final ' \' */
<------><------>while (*p) {
<------><------><------>if (isspace(*p)) {
<------><------><------><------>*p = '\0';
<------><------><------><------>break;
<------><------><------>}
<------><------><------>p++;
<------><------>}
 
<------><------>/* Check if this file is in same dir as objfile */
<------><------>if ((strstr(line, dir)+strlen(dir)-1) == strrchr(line, '/')) {
<------><------><------>if (!parse_file(line, md)) {
<------><------><------><------>warn("could not open %s: %s\n",
<------><------><------><------>     line, strerror(errno));
<------><------><------><------>goto out_file;
<------><------><------>}
 
<------><------>}
 
<------>}
 
<------>/* Everyone parsed OK */
<------>ret = 1;
out_file:
<------>free(file);
<------>free(dir);
<------>free(cmd);
<------>return ret;
}
 
/* Calc and record src checksum. */
void get_src_version(const char *modname, char sum[], unsigned sumlen)
{
<------>char *buf, *pos, *firstline;
<------>struct md4_ctx md;
<------>char *fname;
<------>char filelist[PATH_MAX + 1];
<------>int postfix_len = 1;
 
<------>if (strends(modname, ".lto.o"))
<------><------>postfix_len = 5;
 
<------>/* objects for a module are listed in the first line of *.mod file. */
<------>snprintf(filelist, sizeof(filelist), "%.*smod",
<------><------> (int)strlen(modname) - postfix_len, modname);
 
<------>buf = read_text_file(filelist);
 
<------>pos = buf;
<------>firstline = get_line(&pos);
<------>if (!firstline) {
<------><------>warn("bad ending versions file for %s\n", modname);
<------><------>goto free;
<------>}
 
<------>md4_init(&md);
<------>while ((fname = strsep(&firstline, " "))) {
<------><------>if (!*fname)
<------><------><------>continue;
<------><------>if (!(is_static_library(fname)) &&
<------><------><------><------>!parse_source_files(fname, &md))
<------><------><------>goto free;
<------>}
 
<------>md4_final_ascii(&md, sum, sumlen);
free:
<------>free(buf);
}