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debug: new dmS command for listing sections of mapped libraries

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This command is like dmi. It will list all the sections of the mapped
library by either shelling-out to rabin2 or calling r_core_info --
depending on whether filtering by library name was requested.

---
v3:
* more formatting (pancake)
* r_str_escape and quote the value passed in RABIN2_PREFIX env var (pancake)

v2:
 * formatting (pancake)
 * don't break out of the loop early
 * only strdup when I must [^1] (pancake)
 * I can't use r_sys_cmdf because then I can't filter the output with ~
    * reduce noise a little by calling r_sys_cmd_strf directly
 * iterate over the modules, not the maps

[^1]: The strdup of r_get_config(...,"bin.prefix") is needed because otherwise
we loose the original bin.prefix during the r_set_config(...,
"bin.prefix") calls in the loop.

review comments on dbg_maps
This commit is contained in:
Ben Gardiner 2016-11-26 00:05:21 -05:00 committed by pancake
parent 4c890d0b52
commit 97b3b86bba
1 changed files with 60 additions and 0 deletions
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60
libr/core/cmd_debug.c
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@ -897,6 +897,8 @@ static int cmd_debug_map(RCore *core, const char *input) {
"dmd", "[a] [file]", "Dump current (all) debug map region to a file (from-to.dmp) (see Sd)",
"dmi", " [addr|libname] [symname]", "List symbols of target lib",
"dmi*", " [addr|libname] [symname]", "List symbols of target lib in radare commands",
"dmS", " [addr|libname] [sectname]", "List sections of target lib",
"dmS*", " [addr|libname] [sectname]", "List sections of target lib in radare commands",
"dmj", "", "List memmaps in JSON format",
"dml", " <file>", "Load contents of file into the current map region (see Sl)",
"dmm", "[?][j*]", "List modules (libraries, binaries loaded in memory)",
@ -1071,6 +1073,64 @@ static int cmd_debug_map(RCore *core, const char *input) {
free (ptr);
}
break;
case 'S': // "dmS"
{ // Move to a separate function
const char *libname = NULL, *sectname = NULL, *mode = "";
ut64 baddr = 0LL;
char *ptr;
int i;
if (input[1]=='*') {
ptr = strdup (r_str_trim_head ((char*)input + 2));
mode = "-r ";
} else {
ptr = strdup (r_str_trim_head ((char*)input + 1));
}
i = r_str_word_set0 (ptr);
addr = UT64_MAX;
libname = NULL;
switch (i) {
case 2: // get section name
sectname = r_str_word_get0 (ptr, 1);
case 1: // get addr|libname
if (IS_NUMBER (*ptr)) {
const char *a0 = r_str_word_get0 (ptr, 0);
addr = r_num_math (core->num, a0);
} else {
addr = UT64_MAX;
}
if (!addr || addr == UT64_MAX) {
libname = r_str_word_get0 (ptr, 0);
}
break;
}
r_debug_map_sync (core->dbg); // update process memory maps
RList *list = r_debug_modules_list (core->dbg);
r_list_foreach (list, iter, map) {
if ((!libname ||
(addr != UT64_MAX && (addr >= map->addr && addr < map->addr_end)) ||
(libname != NULL && (strstr (map->name, libname))))) {
baddr = map->addr;
char *res;
const char *file = map->file? map->file: map->name;
char *name = r_str_escape ((char *)r_file_basename (file));
if (sectname) {
res = r_sys_cmd_strf ("env RABIN2_PREFIX=\"%s\" rabin2 %s-B 0x%08"PFMT64x" -S %s | grep %s", name, mode, baddr, file, sectname);
} else {
res = r_sys_cmd_strf ("env RABIN2_PREFIX=\"%s\" rabin2 %s-B 0x%08"PFMT64x" -S %s", name, mode, baddr, file);
}
r_cons_println (res);
free(name);
free (res);
if (libname || addr != UT64_MAX) { //only single match requested
break;
}
}
}
free (ptr);
}
break;
case ' ':
{
char *p;