/* Debugger stack display with symbols */
int cmd_dbgstack()
{
char *param;
eresi_Addr size;
PROFILER_IN(__FILE__, __FUNCTION__, __LINE__);
/* Preliminary checks */
if (!elfsh_is_runtime_mode())
PROFILER_ERR(__FILE__, __FUNCTION__, __LINE__,
"Command only available in e2dbg", (-1));
param = world.curjob->curcmd->param[0];
if (!param)
PROFILER_ERR(__FILE__, __FUNCTION__, __LINE__,
"Invalid argument", (-1));
param = revm_lookup_string(param);
/* Dump debugger stack */
if (revm_isnbr(param))
{
if (sscanf(param, UFMT, &size) != 1)
PROFILER_ERR(__FILE__, __FUNCTION__, __LINE__,
"Invalid argument", (-1));
PROFILER_ROUT(__FILE__, __FUNCTION__, __LINE__,
e2dbg_stack_dump(size, (eresi_Addr) ¶m));
}
PROFILER_ERR(__FILE__, __FUNCTION__, __LINE__,
"Invalid parameter", -1);
}
/**
* sect name
* sym name
*/
int cmd_remove()
{
elfshsect_t *symtab;
char *name;
int err;
char logbuf[BUFSIZ];
PROFILER_IN(__FILE__, __FUNCTION__, __LINE__);
/* Checks (needed because the command takes variable amount of params) */
if (!world.curjob->curcmd->param[0] || !world.curjob->curcmd->param[1])
PROFILER_ERR(__FILE__, __FUNCTION__, __LINE__,
"Invalid parameters", -1);
/* Lookup object name */
name = revm_lookup_string(world.curjob->curcmd->param[1]);
/* Remove a section */
if (!strcmp(world.curjob->curcmd->param[0], "sect"))
err = elfsh_remove_section(world.curjob->curfile, name);
/* Remove a symbol after looking up symbol value */
else if (!strcmp(world.curjob->curcmd->param[0], "sym"))
{
symtab = elfsh_get_symtab(world.curjob->curfile, NULL);
if (!symtab)
PROFILER_ERR(__FILE__, __FUNCTION__, __LINE__,
"Cannot find symbol table", -1);
symtab = world.curjob->curfile->secthash[ELFSH_SECTION_SYMTAB];
err = elfsh_remove_symbol(symtab, name);
}
/* Remove a segment */
else if (!strcmp(world.curjob->curcmd->param[0], "phdr"))
err = elfsh_remove_phdr(world.curjob->curfile, atoi(name));
/* Error */
else
PROFILER_ERR(__FILE__, __FUNCTION__, __LINE__,
"Unknown object type", -1);
/* Report result */
if (!world.state.revm_quiet)
{
snprintf(logbuf, BUFSIZ - 1,
" [*] Object removing %s.\n\n",
(err < 0 ? "failed" : "succesfull"));
revm_output(logbuf);
}
PROFILER_ROUT(__FILE__, __FUNCTION__, __LINE__, 0);
}
/**
* Useful when you have only one terminal
*/
int cmd_meta()
{
int ret;
PROFILER_IN(__FILE__, __FUNCTION__, __LINE__);
if (!world.state.revm_quiet)
revm_output(" [*] You are still in elfsh, exit bash "
"to get back to the regular prompt \n\n");
revm_terminal_unprepare(world.state.revm_mode);
ret = revm_system(revm_lookup_string("$SHELL"));
revm_terminal_prepare(world.state.revm_mode);
PROFILER_ROUT(__FILE__, __FUNCTION__, __LINE__, (ret));
}
/**
* Edit a file
*/
int cmd_edit()
{
int ret;
char buff[BUFSIZ];
PROFILER_IN(__FILE__, __FUNCTION__, __LINE__);
revm_terminal_unprepare(world.state.revm_mode);
snprintf(buff, BUFSIZ, "%s %s",
revm_lookup_string("$EDITOR"),
world.curjob->curcmd->param[0]);
ret = revm_system(buff);
revm_terminal_prepare(world.state.revm_mode);
PROFILER_ROUT(__FILE__, __FUNCTION__, __LINE__, (ret));
}
/* Stack display with symbols */
int cmd_stack()
{
char *param;
eresi_Addr size;
revmobj_t *ssp;
revmexpr_t *expr;
PROFILER_IN(__FILE__, __FUNCTION__, __LINE__);
/* Preliminary checks */
if (!elfsh_is_runtime_mode())
PROFILER_ERR(__FILE__, __FUNCTION__, __LINE__,
"Command only available in e2dbg", (-1));
param = world.curjob->curcmd->param[0];
if (!param)
PROFILER_ERR(__FILE__, __FUNCTION__, __LINE__,
"Invalid argument", (-1));
param = revm_lookup_string(param);
expr = revm_expr_get(E2DBG_SSP_VAR);
if (!expr || !expr->value)
PROFILER_ERR(__FILE__, __FUNCTION__, __LINE__, "No saved SP", -1);
ssp = expr->value;
/* Dump debuggee stack */
if (revm_isnbr(param))
{
if (sscanf(param, UFMT, &size) != 1)
PROFILER_ERR(__FILE__, __FUNCTION__, __LINE__,
"Invalid argument", (-1));
PROFILER_ROUT(__FILE__, __FUNCTION__, __LINE__,
e2dbg_stack_dump(size, ssp->immed_val.ent));
}
PROFILER_ERR(__FILE__, __FUNCTION__, __LINE__,
"Invalid parameter", -1);
}
/* Breakpoint command */
int cmd_bp()
{
char *str;
int ret;
eresi_Addr addr;
char logbuf[BUFSIZ];
int idx;
int index;
elfsh_SAddr off = 0;
char *name;
elfshbp_t *cur;
char **keys;
int keynbr;
PROFILER_IN(__FILE__, __FUNCTION__, __LINE__);
/* build argc */
for (idx = 0; world.curjob->curcmd->param[idx] != NULL; idx++);
str = revm_lookup_string(world.curjob->curcmd->param[0]);
/* Select subcommand */
switch (idx)
{
/* List breakpoints */
case 0:
e2dbg_output(" .:: Breakpoints ::.\n\n");
keys = hash_get_keys(&e2dbgworld.bp, &keynbr);
for (index = 0; index < keynbr; index++)
{
cur = hash_get(&e2dbgworld.bp, keys[index]);
name = revm_resolve(world.curjob->curfile,
(eresi_Addr) cur->addr, &off);
if (off)
snprintf(logbuf, BUFSIZ, " %c [%02u] " XFMT " <%s + " UFMT ">\n",
(e2dbg_is_watchpoint(cur) ? 'W' : 'B'),
cur->id, cur->addr, name, off);
else
snprintf(logbuf, BUFSIZ, " %c [%02u] " XFMT " <%s>\n",
(e2dbg_is_watchpoint(cur) ? 'W' : 'B'),
cur->id, cur->addr, name);
e2dbg_output(logbuf);
}
hash_free_keys(keys);
if (!index)
e2dbg_output(" [*] No breakpoints\n");
e2dbg_output("\n");
break;
/* Supply a new breakpoint */
case 1:
if (!elfsh_is_runtime_mode())
PROFILER_ERR(__FILE__, __FUNCTION__, __LINE__,
"Not in dynamic or debugger mode", -1);
if (!str || !(*str))
PROFILER_ERR(__FILE__, __FUNCTION__, __LINE__,
"Invalid argument", -1);
/* Break on a supplied virtual address */
if (IS_VADDR(str))
{
if (sscanf(str + 2, AFMT, &addr) != 1)
PROFILER_ERR(__FILE__, __FUNCTION__, __LINE__,
"Invalid virtual address requested", (-1));
}
/* Resolve first a function name */
else
{
addr = e2dbg_breakpoint_find_addr(str);
if (addr == 0)
PROFILER_ERR(__FILE__, __FUNCTION__, __LINE__,
"Requested symbol address unknown", -1);
}
/* Add the breakpoint */
ret = e2dbg_breakpoint_add(addr);
if (ret < 0)
PROFILER_ERR(__FILE__, __FUNCTION__, __LINE__,
"Breakpoint insertion failed\n", (-1));
if (ret >= 0)
{
name = revm_resolve(world.curjob->curfile, addr, &off);
if (!off)
snprintf(logbuf, BUFSIZ - 1,
" [*] Breakpoint added at <%s> (" XFMT ")\n\n", name, addr);
else
snprintf(logbuf, BUFSIZ - 1,
" [*] Breakpoint added at <%s + " UFMT "> (" XFMT ")\n\n",
name, off, addr);
e2dbg_output(logbuf);
}
break;
/* Wrong command syntax */
default:
PROFILER_ERR(__FILE__, __FUNCTION__, __LINE__,
"Wrong arg number", (-1));
}
PROFILER_ROUT(__FILE__, __FUNCTION__, __LINE__, (ret));
}
