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# Copyright (C) 2006 OpenWrt.org
#
# This is free software, licensed under the GNU General Public License v2.
# See /LICENSE for more information.
#
# expose (again) an hash_fd function (used in 911-ipkg.patch)
#
diff -ruN busybox-1.3.1-orig/coreutils/md5_sha1_sum.c busybox-1.3.1-913/coreutils/md5_sha1_sum.c
--- busybox-1.3.1-orig/coreutils/md5_sha1_sum.c 2006-12-27 05:54:50.000000000 +0100
+++ busybox-1.3.1-913/coreutils/md5_sha1_sum.c 2006-12-28 00:59:35.000000000 +0100
@@ -8,78 +8,10 @@
#include "busybox.h"
-typedef enum { HASH_SHA1, HASH_MD5 } hash_algo_t;
-
#define FLAG_SILENT 1
#define FLAG_CHECK 2
#define FLAG_WARN 4
-/* This might be useful elsewhere */
-static unsigned char *hash_bin_to_hex(unsigned char *hash_value,
- unsigned hash_length)
-{
- int len = 0;
- char *hex_value = xmalloc((hash_length * 2) + 2);
- while (hash_length--) {
- len += sprintf(hex_value + len, "%02x", *hash_value++);
- }
- return hex_value;
-}
-
-static uint8_t *hash_file(const char *filename, hash_algo_t hash_algo)
-{
- int src_fd, hash_len, count;
- union _ctx_ {
- sha1_ctx_t sha1;
- md5_ctx_t md5;
- } context;
- uint8_t *hash_value = NULL;
- RESERVE_CONFIG_UBUFFER(in_buf, 4096);
- void (*update)(const void*, size_t, void*);
- void (*final)(void*, void*);
-
- src_fd = STDIN_FILENO;
- if (filename[0] != '-' || filename[1]) { /* not "-" */
- src_fd = open(filename, O_RDONLY);
- if (src_fd < 0) {
- bb_perror_msg("%s", filename);
- return NULL;
- }
- }
-
- /* figure specific hash algorithims */
- if (ENABLE_MD5SUM && hash_algo==HASH_MD5) {
- md5_begin(&context.md5);
- update = (void (*)(const void*, size_t, void*))md5_hash;
- final = (void (*)(void*, void*))md5_end;
- hash_len = 16;
- } else if (ENABLE_SHA1SUM && hash_algo==HASH_SHA1) {
- sha1_begin(&context.sha1);
- update = (void (*)(const void*, size_t, void*))sha1_hash;
- final = (void (*)(void*, void*))sha1_end;
- hash_len = 20;
- } else {
- bb_error_msg_and_die("algorithm not supported");
- }
-
- while (0 < (count = safe_read(src_fd, in_buf, 4096))) {
- update(in_buf, count, &context);
- }
-
- if (count == 0) {
- final(in_buf, &context);
- hash_value = hash_bin_to_hex(in_buf, hash_len);
- }
-
- RELEASE_CONFIG_BUFFER(in_buf);
-
- if (src_fd != STDIN_FILENO) {
- close(src_fd);
- }
-
- return hash_value;
-}
-
int md5_sha1_sum_main(int argc, char **argv)
{
int return_value = EXIT_SUCCESS;
diff -ruN busybox-1.3.1-orig/include/libbb.h busybox-1.3.1-913/include/libbb.h
--- busybox-1.3.1-orig/include/libbb.h 2006-12-27 05:56:18.000000000 +0100
+++ busybox-1.3.1-913/include/libbb.h 2006-12-27 23:25:52.000000000 +0100
@@ -528,6 +528,8 @@
extern const char bb_uuenc_tbl_std[];
void bb_uuencode(const unsigned char *s, char *store, const int length, const char *tbl);
+typedef enum { HASH_SHA1, HASH_MD5 } hash_algo_t;
+
typedef struct sha1_ctx_t {
uint32_t count[2];
uint32_t hash[5];
@@ -550,6 +552,10 @@
void md5_hash(const void *data, size_t length, md5_ctx_t *ctx);
void *md5_end(void *resbuf, md5_ctx_t *ctx);
+unsigned char *hash_bin_to_hex(unsigned char *hash_value, unsigned char hash_length);
+int hash_fd(int fd, hash_algo_t hash_algo, uint8_t *hash_value);
+uint8_t *hash_file(const char *filename, hash_algo_t hash_algo);
+
uint32_t *crc32_filltable(int endian);
diff -ruN busybox-1.3.1-orig/libbb/hash.c busybox-1.3.1-913/libbb/hash.c
--- busybox-1.3.1-orig/libbb/hash.c 1970-01-01 01:00:00.000000000 +0100
+++ busybox-1.3.1-913/libbb/hash.c 2006-12-28 00:48:52.000000000 +0100
@@ -0,0 +1,99 @@
+/*
+ * Copyright (C) 2003 Glenn L. McGrath
+ * Copyright (C) 2003-2004 Erik Andersen
+ *
+ * Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
+ */
+
+#include <fcntl.h>
+#include <limits.h>
+#include <stdio.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "busybox.h"
+
+unsigned char *hash_bin_to_hex(unsigned char *hash_value, unsigned char hash_length)
+{
+ int len = 0;
+ char *hex_value = xmalloc((hash_length * 2) + 2);
+ while (hash_length--) {
+ len += sprintf(hex_value + len, "%02x", *hash_value++);
+ }
+ return hex_value;
+}
+
+int hash_fd(int fd, hash_algo_t hash_algo, uint8_t *hash_value)
+{
+ int count, result = 0;
+ union _ctx_ {
+ sha1_ctx_t sha1;
+ md5_ctx_t md5;
+ } context;
+ RESERVE_CONFIG_UBUFFER(in_buf, 4096);
+ void (*update)(const void*, size_t, void*) = NULL;
+ void (*final)(void*, void*) = NULL;
+
+ // figure specific hash algorithims
+ if (hash_algo==HASH_MD5) {
+ md5_begin(&context.md5);
+ update = (void (*)(const void*, size_t, void*))md5_hash;
+ final = (void (*)(void*, void*))md5_end;
+ } else if (hash_algo==HASH_SHA1) {
+ sha1_begin(&context.sha1);
+ update = (void (*)(const void*, size_t, void*))sha1_hash;
+ final = (void (*)(void*, void*))sha1_end;
+ }
+
+
+ while (0 < (count = safe_read(fd, in_buf, sizeof in_buf))) {
+ update(in_buf, count, &context);
+ result += count;
+ }
+
+ if (count == 0) {
+ final(hash_value, &context);
+ }
+
+ RELEASE_CONFIG_BUFFER(in_buf);
+
+ return result;
+}
+
+uint8_t *hash_file(const char *filename, hash_algo_t hash_algo)
+{
+ int src_fd, hash_len;
+ RESERVE_CONFIG_UBUFFER(hash_buf, 20);
+ uint8_t *hash_value = NULL;
+
+ if (ENABLE_MD5SUM && hash_algo==HASH_MD5) {
+ hash_len = 16;
+ } else if (ENABLE_SHA1SUM && hash_algo==HASH_SHA1) {
+ hash_len = 20;
+ } else {
+ bb_error_msg_and_die("algotithm not supported");
+ }
+
+ src_fd = STDIN_FILENO;
+ if (filename[0] != '-' || filename[1]) { /* not "-" */
+ src_fd = open(filename, O_RDONLY);
+ if (src_fd < 0) {
+ bb_perror_msg("%s", filename);
+ return NULL;
+ }
+ }
+
+ if (hash_fd(src_fd, hash_algo, hash_buf) > 0) {
+ hash_value = hash_bin_to_hex(hash_buf, hash_len);
+ }
+
+ if (src_fd != STDIN_FILENO) {
+ close(src_fd);
+ }
+
+ RELEASE_CONFIG_BUFFER(hash_buf);
+
+ return hash_value;
+}
diff -ruN busybox-1.3.1-orig/libbb/Kbuild busybox-1.3.1-913/libbb/Kbuild
--- busybox-1.3.1-orig/libbb/Kbuild 2006-12-27 05:55:04.000000000 +0100
+++ busybox-1.3.1-913/libbb/Kbuild 2006-12-27 23:31:20.000000000 +0100
@@ -37,6 +37,7 @@
lib-y += get_last_path_component.o
lib-y += get_line_from_file.o
lib-y += getopt32.o
+lib-y += hash.o
lib-y += herror_msg.o
lib-y += herror_msg_and_die.o
lib-y += human_readable.o
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