Re: Issues with intel firmware initiator, ibft and 2-way chap

[Konrad Rzeszutek]

> 
> Sure, if you can tell me how to get the blob?

gcc find_ibft.c -o find_ibft
sudo ./find_ibft blob


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#include <stdio.h>
#include <errno.h>
#include <sys/mman.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <fcntl.h>
#include <ctype.h>
#include <stdint.h>

const char *filename = "/dev/mem";
int main(int argc, char *argv[])
{

        int fd = 0;
        unsigned char *fbuf;
        unsigned char *p;
        struct stat buf;
        int i,len;
        unsigned int len_p;

        fd = open(filename, O_RDONLY);
        if (fd <= 0) {
                printf("Could not open; err: %d(%s)\n", errno, strerror(errno));
                return errno;
        }
        if (stat(filename, &buf) != 0) {
                printf("Could not open; err: %d(%s)\n", errno, strerror(errno));
                return errno;
        }

        len = 0x100000; // Up to 1MB.
        fbuf = mmap(0, len, PROT_READ, MAP_PRIVATE, fd, 0);
        if (fbuf == MAP_FAILED) {
                printf("Could not map: error: %d(%s)\n", errno,
                       strerror(errno));
                return errno;
        }
        len_p = 0;
        for (p = fbuf; p < fbuf + 0x100000; p += 4)
        {
                if (memcmp(p, "iBFT", 4) == 0) {
                        len_p = *(unsigned int *)(p + 4);
                        printf("iBFT detected. (%d)\n", len_p);
                        break;
                }
        }
        if (len_p)
        {
                if (argc > 1) {
                        int outfd;
                        outfd = open(argv[1], O_RDWR|O_CREAT, 0644);
                        if (outfd != -1) {
                                write(outfd, p, len_p);
                                close(outfd);
                        }
                }
                printf("(%lx): DATA:\n", p);

                for (i = 0; i < len_p; i++) {
                        if ((i % 70) == 0)
                                printf("\n%.3x: ", i);
                        if (isgraph(p[i]))
                                printf("%c", p[i]);
                        else
                                printf("_");
        //      putchar(fbuf[i]);
                }
                printf("\n");
        }
        else
        {
                printf("Bummer. No iBFT found.\n");
        }
        if (munmap(fbuf, len)) {
                printf("Could not unmap: %d(%s)\n", errno, strerror(errno));
                return errno;
        }
        close(fd);
        return 0;
}