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partially print section table names

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This commit is contained in:
Gregory 2019-06-05 00:18:10 +03:00
parent b9b93a9104
commit f76219d3d4
1 changed files with 25 additions and 6 deletions
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31
src/main.c
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@ -2,6 +2,7 @@
#include <fcntl.h> #include <fcntl.h>
#include <sys/stat.h> #include <sys/stat.h>
#include <elf.h> #include <elf.h>
#include <stdio.h>
int main(int argc, char **argv) int main(int argc, char **argv)
{ {
@ -23,20 +24,38 @@ int main(int argc, char **argv)
ft_putstr("not a regular file\n"); ft_putstr("not a regular file\n");
return (1); return (1);
} }
Elf64_Ehdr elf_header; char *file;
read(fd, &elf_header, sizeof(Elf64_Ehdr)); file = malloc(stat_buff.st_size);
if (elf_header.e_ident[EI_MAG0] != ELFMAG0 || read(fd, file, stat_buff.st_size);
elf_header.e_ident[EI_MAG1] != ELFMAG1 || Elf64_Ehdr *elf_header;
elf_header.e_ident[EI_MAG2] != ELFMAG2)
elf_header = (Elf64_Ehdr *)file;
if (elf_header->e_ident[EI_MAG0] != ELFMAG0 ||
elf_header->e_ident[EI_MAG1] != ELFMAG1 ||
elf_header->e_ident[EI_MAG2] != ELFMAG2)
{ {
ft_putstr("not a valid magic number for elf binary file\n"); ft_putstr("not a valid magic number for elf binary file\n");
return (1); return (1);
} }
if (elf_header.e_ident[EI_CLASS] != ELFCLASS64) if (elf_header->e_ident[EI_CLASS] != ELFCLASS64)
{ {
ft_putstr("sorry, only 64bit elf binaries for now"); ft_putstr("sorry, only 64bit elf binaries for now");
return (1); return (1);
} }
Elf64_Shdr *section_array;
Elf64_Shdr *strings_table;
section_array = (Elf64_Shdr *)(file + elf_header->e_shoff);
strings_table = section_array + elf_header->e_shstrndx;
char *string;
int i = 1;
while (i < elf_header->e_shnum)
{
section_array = section_array + i;
string = (char *)(file + strings_table->sh_offset + section_array->sh_name);
printf("entity name: %s\n", string);
i++;
}
ft_putstr("symbol table\n"); ft_putstr("symbol table\n");
return(0); return(0);
} }