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Commit d0455c95 authored by Scott Anderson's avatar Scott Anderson
Browse files

Add md5 command to toolbox. 



This command outputs the MD5 for specified files.  The output is
in the same form as the md5sum command on Linux.

Change-Id: Ie0e6faf678469ac886bba8b46d98c0e54976a1ed
Signed-off-by: default avatarScott Anderson <saa@google.com>
parent a33c6ee9

toolbox/Android.mk

+4 −1
Original line number Diff line number Diff line
@@ -55,7 +55,8 @@ TOOLS := \ 
	nandread \

	ionice \

	touch \

	lsof

	lsof \

	md5



ifneq (,$(filter userdebug eng,$(TARGET_BUILD_VARIANT)))

TOOLS += r
@@ -68,6 +69,8 @@ LOCAL_SRC_FILES:= \ 


LOCAL_SHARED_LIBRARIES := libcutils libc libusbhost



LOCAL_C_INCLUDES := bionic/libc/bionic



LOCAL_MODULE:= toolbox



# Including this will define $(intermediates).

toolbox/md5.c

0 → 100644
+77 −0
Original line number Diff line number Diff line 
#include <errno.h>

#include <fcntl.h>

#include <stdio.h>

#include <unistd.h>

#include <sys/stat.h>

#include <sys/types.h>

#include <md5.h>



/* When this was written, bionic's md5.h did not define this. */

#ifndef MD5_DIGEST_LENGTH

#define MD5_DIGEST_LENGTH 16

#endif



static int usage()

{

    fprintf(stderr,"md5 file ...\n");

    return -1;

}



static int do_md5(const char *path)

{

    unsigned int i;

    int fd;

    MD5_CTX md5_ctx;

    unsigned char md5[MD5_DIGEST_LENGTH];



    fd = open(path, O_RDONLY);

    if (fd < 0) {

        fprintf(stderr,"could not open %s, %s\n", path, strerror(errno));

        return -1;

    }



    /* Note that bionic's MD5_* functions return void. */

    MD5_Init(&md5_ctx);



    while (1) {

        char buf[4096];

        ssize_t rlen;

        rlen = read(fd, buf, sizeof(buf));

        if (rlen == 0)

            break;

        else if (rlen < 0) {

            (void)close(fd);

            fprintf(stderr,"could not read %s, %s\n", path, strerror(errno));

            return -1;

        }

        MD5_Update(&md5_ctx, buf, rlen);

    }

    if (close(fd)) {

        fprintf(stderr,"could not close %s, %s\n", path, strerror(errno));

        return -1;

    }



    MD5_Final(md5, &md5_ctx);



    for (i = 0; i < (int)sizeof(md5); i++)

        printf("%02x", md5[i]);

    printf("  %s\n", path);



    return 0;

}



int md5_main(int argc, char *argv[])

{

    int i, ret = 0;



    if (argc < 2)

        return usage();



    /* loop over the file args */

    for (i = 1; i < argc; i++) {

        if (do_md5(argv[i]))

            ret = 1;

    }



    return ret;

}