package/busybox/patches/501-libbb_hash.patch

   1 Index: busybox-1.7.2/coreutils/md5_sha1_sum.c
   2 ===================================================================
   3 --- busybox-1.7.2.orig/coreutils/md5_sha1_sum.c 2007-10-30 15:34:59.000000000 -0500
   4 +++ busybox-1.7.2/coreutils/md5_sha1_sum.c      2007-10-30 15:35:06.000000000 -0500
   5 @@ -8,75 +8,10 @@
   6
   7  #include "libbb.h"
   8
   9 -typedef enum { HASH_SHA1, HASH_MD5 } hash_algo_t;
  10 -
  11  #define FLAG_SILENT    1
  12  #define FLAG_CHECK     2
  13  #define FLAG_WARN      4
  14
  15 -/* This might be useful elsewhere */
  16 -static unsigned char *hash_bin_to_hex(unsigned char *hash_value,
  17 -                               unsigned hash_length)
  18 -{
  19 -       /* xzalloc zero-terminates */
  20 -       char *hex_value = xzalloc((hash_length * 2) + 1);
  21 -       bin2hex(hex_value, (char*)hash_value, hash_length);
  22 -       return hex_value;
  23 -}
  24 -
  25 -static uint8_t *hash_file(const char *filename, hash_algo_t hash_algo)
  26 -{
  27 -       int src_fd, hash_len, count;
  28 -       union _ctx_ {
  29 -               sha1_ctx_t sha1;
  30 -               md5_ctx_t md5;
  31 -       } context;
  32 -       uint8_t *hash_value = NULL;
  33 -       RESERVE_CONFIG_UBUFFER(in_buf, 4096);
  34 -       void (*update)(const void*, size_t, void*);
  35 -       void (*final)(void*, void*);
  36 -
  37 -       src_fd = STDIN_FILENO;
  38 -       if (NOT_LONE_DASH(filename)) {
  39 -               src_fd = open_or_warn(filename, O_RDONLY);
  40 -               if (src_fd < 0) {
  41 -                       return NULL;
  42 -               }
  43 -       }
  44 -
  45 -       /* figure specific hash algorithims */
  46 -       if (ENABLE_MD5SUM && hash_algo==HASH_MD5) {
  47 -               md5_begin(&context.md5);
  48 -               update = (void (*)(const void*, size_t, void*))md5_hash;
  49 -               final = (void (*)(void*, void*))md5_end;
  50 -               hash_len = 16;
  51 -       } else if (ENABLE_SHA1SUM && hash_algo==HASH_SHA1) {
  52 -               sha1_begin(&context.sha1);
  53 -               update = (void (*)(const void*, size_t, void*))sha1_hash;
  54 -               final = (void (*)(void*, void*))sha1_end;
  55 -               hash_len = 20;
  56 -       } else {
  57 -               bb_error_msg_and_die("algorithm not supported");
  58 -       }
  59 -
  60 -       while (0 < (count = safe_read(src_fd, in_buf, 4096))) {
  61 -               update(in_buf, count, &context);
  62 -       }
  63 -
  64 -       if (count == 0) {
  65 -               final(in_buf, &context);
  66 -               hash_value = hash_bin_to_hex(in_buf, hash_len);
  67 -       }
  68 -
  69 -       RELEASE_CONFIG_BUFFER(in_buf);
  70 -
  71 -       if (src_fd != STDIN_FILENO) {
  72 -               close(src_fd);
  73 -       }
  74 -
  75 -       return hash_value;
  76 -}
  77 -
  78  int md5_sha1_sum_main(int argc, char **argv);
  79  int md5_sha1_sum_main(int argc, char **argv)
  80  {
  81 Index: busybox-1.7.2/include/libbb.h
  82 ===================================================================
  83 --- busybox-1.7.2.orig/include/libbb.h  2007-10-30 15:35:04.000000000 -0500
  84 +++ busybox-1.7.2/include/libbb.h       2007-10-30 15:35:06.000000000 -0500
  85 @@ -947,6 +947,7 @@
  86  extern const char bb_uuenc_tbl_std[];
  87  void bb_uuencode(char *store, const void *s, int length, const char *tbl);
  88
  89 +typedef enum { HASH_SHA1, HASH_MD5 } hash_algo_t;
  90  typedef struct sha1_ctx_t {
  91         uint32_t count[2];
  92         uint32_t hash[5];
  93 @@ -968,6 +969,8 @@
  94  void md5_begin(md5_ctx_t *ctx);
  95  void md5_hash(const void *data, size_t length, md5_ctx_t *ctx);
  96  void *md5_end(void *resbuf, md5_ctx_t *ctx);
  97 +unsigned char *hash_bin_to_hex(unsigned char *hash_value, unsigned hash_length);
  98 +uint8_t *hash_file(const char *filename, hash_algo_t hash_algo);
  99
 100  uint32_t *crc32_filltable(uint32_t *tbl256, int endian);
 101
 102 Index: busybox-1.7.2/libbb/Kbuild
 103 ===================================================================
 104 --- busybox-1.7.2.orig/libbb/Kbuild     2007-10-30 15:34:59.000000000 -0500
 105 +++ busybox-1.7.2/libbb/Kbuild  2007-10-30 15:35:06.000000000 -0500
 106 @@ -38,6 +38,7 @@
 107  lib-y += get_last_path_component.o
 108  lib-y += get_line_from_file.o
 109  lib-y += getopt32.o
 110 +lib-y += hash.o
 111  lib-y += herror_msg.o
 112  lib-y += herror_msg_and_die.o
 113  lib-y += human_readable.o
 114 Index: busybox-1.7.2/libbb/hash.c
 115 ===================================================================
 116 --- /dev/null   1970-01-01 00:00:00.000000000 +0000
 117 +++ busybox-1.7.2/libbb/hash.c  2007-10-30 15:35:06.000000000 -0500
 118 @@ -0,0 +1,81 @@
 119 +/*
 120 + *  Copyright (C) 2003 Glenn L. McGrath
 121 + *  Copyright (C) 2003-2004 Erik Andersen
 122 + *
 123 + * Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
 124 + */
 125 +
 126 +#include <fcntl.h>
 127 +#include <limits.h>
 128 +#include <stdio.h>
 129 +#include <stdint.h>
 130 +#include <stdlib.h>
 131 +#include <string.h>
 132 +#include <unistd.h>
 133 +
 134 +#include "busybox.h"
 135 +
 136 +/* This might be useful elsewhere */
 137 +unsigned char *hash_bin_to_hex(unsigned char *hash_value,
 138 +                               unsigned hash_length)
 139 +{
 140 +       /* xzalloc zero-terminates */
 141 +       char *hex_value = xzalloc((hash_length * 2) + 1);
 142 +       bin2hex(hex_value, (char*)hash_value, hash_length);
 143 +       return hex_value;
 144 +}
 145 +
 146 +uint8_t *hash_file(const char *filename, hash_algo_t hash_algo)
 147 +{
 148 +       int src_fd, hash_len, count;
 149 +       union _ctx_ {
 150 +               sha1_ctx_t sha1;
 151 +               md5_ctx_t md5;
 152 +       } context;
 153 +       uint8_t *hash_value = NULL;
 154 +       RESERVE_CONFIG_UBUFFER(in_buf, 4096);
 155 +       void (*update)(const void*, size_t, void*);
 156 +       void (*final)(void*, void*);
 157 +
 158 +       src_fd = STDIN_FILENO;
 159 +       if (NOT_LONE_DASH(filename)) {
 160 +               src_fd = open_or_warn(filename, O_RDONLY);
 161 +               if (src_fd < 0) {
 162 +                       return NULL;
 163 +               }
 164 +       }
 165 +
 166 +       /* figure specific hash algorithims */
 167 +       if (ENABLE_MD5SUM && hash_algo==HASH_MD5) {
 168 +               md5_begin(&context.md5);
 169 +               update = (void (*)(const void*, size_t, void*))md5_hash;
 170 +               final = (void (*)(void*, void*))md5_end;
 171 +               hash_len = 16;
 172 +       } else if (ENABLE_SHA1SUM && hash_algo==HASH_SHA1) {
 173 +               sha1_begin(&context.sha1);
 174 +               update = (void (*)(const void*, size_t, void*))sha1_hash;
 175 +               final = (void (*)(void*, void*))sha1_end;
 176 +               hash_len = 20;
 177 +       } else {
 178 +               bb_error_msg_and_die("algorithm not supported");
 179 +       }
 180 +
 181 +       while (0 < (count = safe_read(src_fd, in_buf, 4096))) {
 182 +               update(in_buf, count, &context);
 183 +       }
 184 +
 185 +       if (count == 0) {
 186 +               final(in_buf, &context);
 187 +               hash_value = hash_bin_to_hex(in_buf, hash_len);
 188 +       }
 189 +
 190 +       RELEASE_CONFIG_BUFFER(in_buf);
 191 +
 192 +       if (src_fd != STDIN_FILENO) {
 193 +               close(src_fd);
 194 +       }
 195 +
 196 +       return hash_value;
 197 +}
 198 +
 199 +