Skip to content

Commit

Permalink
Convert pf commands to rzshell
Browse files Browse the repository at this point in the history
  • Loading branch information
@XVilka
XVilka committed May 8, 2023
1 parent 20081eb commit 45733eb
Show file tree
Hide file tree
Showing 4 changed files with 594 additions and 232 deletions.
354 changes: 122 additions & 232 deletions librz/core/cmd/cmd_print.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -180,76 +180,6 @@ static const char *help_msg_pf[] = {
NULL
};

static const char *help_detail_pf[] = {
"pf:", PF_USAGE_STR, "",
"Format:", "", "",
" ", "b", "byte (unsigned)",
" ", "B", "resolve enum bitfield (see t?)",
" ", "c", "char (signed byte)",
" ", "C", "byte in decimal",
" ", "d", "0xHEX value (4 bytes) (see 'i' and 'x')",
" ", "D", "disassemble one opcode",
" ", "e", "temporally swap endian",
" ", "E", "resolve enum name (see t?)",
" ", "f", "float value (4 bytes)",
" ", "F", "double value (8 bytes)",
" ", "i", "signed integer value (4 bytes) (see 'd' and 'x')",
" ", "n", "next char specifies size of signed value (1, 2, 4 or 8 byte(s))",
" ", "N", "next char specifies size of unsigned value (1, 2, 4 or 8 byte(s))",
" ", "o", "octal value (4 byte)",
" ", "p", "pointer reference (2, 4 or 8 bytes)",
" ", "q", "quadword (8 bytes)",
" ", "Q", "uint128_t (16 bytes)",
" ", "r", "CPU register `pf r (eax)plop`",
" ", "s", "32bit pointer to string (4 bytes)",
" ", "S", "64bit pointer to string (8 bytes)",
" ", "t", "UNIX timestamp (4 bytes)",
" ", "T", "show Ten first bytes of buffer",
" ", "u", "uleb128 (variable length)",
" ", "w", "word (2 bytes unsigned short in hex)",
" ", "x", "0xHEX value and flag (fd @ addr) (see 'd' and 'i')",
" ", "X", "show formatted hexpairs",
" ", "z", "null terminated string",
" ", "Z", "null terminated wide string",
" ", "?", "data structure `pf ? (struct_name)example_name`",
" ", "*", "next char is pointer (honors asm.bits)",
" ", "+", "toggle show flags for each offset",
" ", ":", "skip 4 bytes",
" ", ".", "skip 1 byte",
" ", ";", "rewind 4 bytes",
" ", ",", "rewind 1 byte",
NULL
};

static const char *help_detail2_pf[] = {
"pf:", PF_USAGE_STR, "",
"Examples:", "", "",
"pf", " 3xi foo bar", "3-array of struct, each with named fields: 'foo' as hex, and 'bar' as int",
"pf", " B (BitFldType)arg_name`", "bitfield type",
"pf", " E (EnumType)arg_name`", "enum type",
"pf", " obj=xxdz prev next size name", "Same as above",
"pf", " *z*i*w nb name blob", "Print the pointers with given labels",
"pf", " iwq foo bar troll", "Print the iwq format with foo, bar, troll as the respective names for the fields",
"pf", " 0iwq foo bar troll", "Same as above, but considered as a union (all fields at offset 0)",
"pf.", "obj xxdz prev next size name", "Define the obj format as xxdz",
"pf.", "plop ? (troll)mystruct", "Use structure troll previously defined",
"pfj.", "plop @ 0x14", "Apply format object at the given offset",
"pf", " 10xiz pointer length string", "Print a size 10 array of the xiz struct with its field names",
"pf", " 5sqw string quad word", "Print an array with sqw struct along with its field names",
"pf", " {integer}? (bifc)", "Print integer times the following format (bifc)",
"pf", " [4]w[7]i", "Print an array of 4 words and then an array of 7 integers",
"pf", " ic...?i foo bar \"(pf xw yo foo)troll\" yo", "Print nested anonymous structures",
"pf", " ;..x", "Print value located 6 bytes from current offset",
"pf", " [10]z[3]i[10]Zb", "Print an fixed size str, widechar, and var",
"pfj", " +F @ 0x14", "Print the content at given offset with flag",
"pf", " n2", "print signed short (2 bytes) value. Use N instead of n for printing unsigned values",
"pf", " [2]? (plop)structname @ 0", "Prints an array of structs",
"pf", " eqew bigWord beef", "Swap endianness and print with given labels",
"pf", ".foo rr (eax)reg1 (eip)reg2", "Create object referencing to register values ",
"pf", " tt troll plop", "print time stamps with labels troll and plop",
NULL
};

static const char *help_msg_px[] = {
"Usage:", "px[0afoswqWqQ][f]", " # Print heXadecimal",
"px", "", "show hexdump",
Expand Down Expand Up @@ -988,127 +918,7 @@ static void cmd_print_format(RzCore *core, const char *_input, const ut8 *block,
_input++;
mode = RZ_PRINT_STRUCT;
break;
case 's': { // "pfs"
const char *val = NULL;
_input += 2;
if (*_input == '.') {
_input++;
val = rz_type_db_format_get(core->analysis->typedb, _input);
if (val) {
rz_cons_printf("%d\n", rz_type_format_struct_size(core->analysis->typedb, val, mode, 0));
} else {
RZ_LOG_ERROR("core: Struct %s not defined\nUsage: pfs.struct_name | pfs format\n", _input);
}
} else if (*_input == ' ') {
while (*_input == ' ' && *_input != '\0') {
_input++;
}
if (*_input) {
rz_cons_printf("%d\n", rz_type_format_struct_size(core->analysis->typedb, _input, mode, 0));
} else {
RZ_LOG_ERROR("core: Struct %s not defined\nUsage: pfs.struct_name | pfs format\n", _input);
}
} else {
RZ_LOG_ERROR("core: Usage: pfs.struct_name | pfs format\n");
}
return;
}
case '?': // "pf?"
_input += 2;
if (*_input) {
if (*_input == '?') {
_input++;
if (_input && *_input == '?') {
_input++;
if (_input && *_input == '?') {
print_format_help_help_help_help(core);
} else {
rz_core_cmd_help(core, help_detail2_pf);
}
} else {
rz_core_cmd_help(core, help_detail_pf);
}
} else {
const char *struct_name = rz_str_trim_head_ro(_input);
const char *val = rz_type_db_format_get(core->analysis->typedb, struct_name);
if (val) {
rz_cons_printf("%s\n", val);
} else {
RZ_LOG_ERROR("core: Struct %s is not defined\n", _input);
}
}
} else {
rz_core_cmd_help(core, help_msg_pf);
}
return;
case 'o': // "pfo"
if (_input[2] == '?') {
char *prefix = rz_path_prefix(NULL);
char *sdb_format = rz_path_home_prefix(RZ_SDB_FORMAT);
eprintf("|Usage: pfo [format-file]\n"
" %s\n"
" " RZ_JOIN_3_PATHS("%s", RZ_SDB_FORMAT, "") "\n",
sdb_format, prefix);
free(sdb_format);
free(prefix);
} else if (_input[2] == ' ') {
const char *fname = rz_str_trim_head_ro(_input + 3);
char *home_formats = rz_path_home_prefix(RZ_SDB_FORMAT);
char *home = rz_file_path_join(home_formats, fname);
free(home_formats);
char *system_formats = rz_path_system(RZ_SDB_FORMAT);
char *path = rz_file_path_join(system_formats, fname);
free(system_formats);
if (rz_str_endswith(_input, ".h")) {
char *error_msg = NULL;
const char *dir = rz_config_get(core->config, "dir.types");
int result = rz_type_parse_file(core->analysis->typedb, path, dir, &error_msg);
if (!result) {
rz_core_cmd0(core, ".ts*");
} else {
RZ_LOG_ERROR("core: Parse error: %s\n", error_msg);
free(error_msg);
}
} else {
if (!rz_core_cmd_file(core, home) && !rz_core_cmd_file(core, path)) {
if (!rz_core_cmd_file(core, _input + 3)) {
RZ_LOG_ERROR("core: pfo: cannot open format file at '%s'\n", path);
}
}
}
free(home);
free(path);
} else {
RzList *files;
RzListIter *iter;
const char *fn;
char *home = rz_path_home_prefix(RZ_SDB_FORMAT);
if (home) {
files = rz_sys_dir(home);
rz_list_foreach (files, iter, fn) {
if (*fn && *fn != '.') {
rz_cons_println(fn);
}
}
rz_list_free(files);
free(home);
}
char *path = rz_path_system(RZ_SDB_FORMAT);
if (path) {
files = rz_sys_dir(path);
rz_list_foreach (files, iter, fn) {
if (*fn && *fn != '.') {
rz_cons_println(fn);
}
}
rz_list_free(files);
free(path);
}
}
free(input);
return;
} // switch

input = strdup(_input);
/* syntax aliasing bridge for 'pf foo=xxd' -> 'pf.foo xxd' */
if (input[1] == ' ') {
Expand Down Expand Up @@ -1143,13 +953,6 @@ static void cmd_print_format(RzCore *core, const char *_input, const ut8 *block,
rz_cons_printf("pf.%s\n", fmt);
}
rz_list_free(fmtl);
/* delete a format */
} else if (input[1] && input[2] == '-') { // "pf-"
if (input[3] == '*') { // "pf-*"
rz_type_db_format_purge(core->analysis->typedb);
} else { // "pf-xxx"
rz_type_db_format_delete(core->analysis->typedb, input + 3);
}
} else {
char *name = strdup(input + (input[1] ? 2 : 1));
char *space = strchr(name, ' ');
Expand Down Expand Up @@ -1233,41 +1036,6 @@ static void cmd_print_format(RzCore *core, const char *_input, const ut8 *block,
}
free(name);
}
} else {
/* This make sure the structure will be printed entirely */
const char *fmt = rz_str_trim_head_ro(input + 1);
int struct_sz = rz_type_format_struct_size(core->analysis->typedb, fmt, mode, 0);
size_t size = RZ_MAX(core->blocksize, struct_sz);
ut8 *buf = calloc(1, size);
if (!buf) {
RZ_LOG_ERROR("core: cannot allocate %zu byte(s)\n", size);
goto stage_left;
}
memcpy(buf, core->block, core->blocksize);
/* check if fmt is '\d+ \d+<...>', common mistake due to usage string*/
bool syntax_ok = true;
char *args = strdup(fmt);
if (!args) {
RZ_LOG_ERROR("core: Mem Allocation.");
free(args);
free(buf);
goto stage_left;
}
const char *arg1 = strtok(args, " ");
if (arg1 && rz_str_isnumber(arg1)) {
syntax_ok = false;
RZ_LOG_ERROR("core: Usage: pf [0|cnt][format-string]\n");
}
free(args);
if (syntax_ok) {
char *format = rz_type_format_data(core->analysis->typedb, core->print, core->offset,
buf, size, fmt, mode, NULL, NULL);
if (format) {
rz_cons_print(format);
free(format);
}
}
free(buf);
}
stage_left:
free(input);
Expand Down Expand Up @@ -6351,6 +6119,33 @@ RZ_IPI RzCmdStatus rz_cmd_print_raw_printable_handler(RzCore *core, int argc, co
return RZ_CMD_STATUS_OK;
}

static RzCmdStatus print_format(RzCore *core, const char *fmt, int mode) {
core->print->reg = rz_core_reg_default(core);
core->print->get_register = rz_reg_get;
core->print->get_register_value = rz_reg_get_value;

int o_blocksize = core->blocksize;
int struct_sz = rz_type_format_struct_size(core->analysis->typedb, fmt, mode, 0);
size_t size = RZ_MAX(core->blocksize, struct_sz);
ut8 *buf = calloc(1, size);
if (!buf) {
RZ_LOG_ERROR("core: cannot allocate %zu byte(s)\n", size);
goto stage_left;
}
memcpy(buf, core->block, core->blocksize);
char *format = rz_type_format_data(core->analysis->typedb, core->print, core->offset,
buf, size, fmt, mode, NULL, NULL);
if (format) {
rz_cons_print(format);
free(format);
}
free(buf);

stage_left:
free(input);
rz_core_block_size(core, o_blocksize);
}

RZ_IPI RzCmdStatus rz_cmd_print_raw_string_handler(RzCore *core, int argc, const char **argv) {
int len = argc > 1 ? rz_num_math(core->num, argv[1]) : strlen((const char *)core->block);
if (len < 0) {
Expand All @@ -6359,3 +6154,98 @@ RZ_IPI RzCmdStatus rz_cmd_print_raw_string_handler(RzCore *core, int argc, const
printraw(core, len);
return RZ_CMD_STATUS_OK;
}

RZ_IPI RzCmdStatus rz_cmd_print_format_handler(RzCore *core, int argc, const char **argv) {
return RZ_CMD_STATUS_OK;
}

RZ_IPI RzCmdStatus rz_cmd_print_format_delete_handler(RzCore *core, int argc, const char **argv) {
rz_type_db_format_delete(core->analysis->typedb, argv[1]);
return RZ_CMD_STATUS_OK;
}

RZ_IPI RzCmdStatus rz_cmd_print_format_delete_all_handler(RzCore *core, int argc, const char **argv) {
rz_type_db_format_purge(core->analysis->typedb);
return RZ_CMD_STATUS_OK;
}

RZ_IPI RzCmdStatus rz_cmd_print_format_named_handler(RzCore *core, int argc, const char **argv) {
int mode = RZ_PRINT_VALUE | RZ_PRINT_MUSTSEE;
return print_format(core, argv[1], mode);
}

RZ_IPI RzCmdStatus rz_cmd_print_format_file_handler(RzCore *core, int argc, const char **argv) {
if (argc < 2) {
RzList *files;
RzListIter *iter;
const char *fn;
char *home = rz_path_home_prefix(RZ_SDB_FORMAT);
if (home) {
files = rz_sys_dir(home);
rz_list_foreach (files, iter, fn) {
if (*fn && *fn != '.') {
rz_cons_println(fn);
}
}
rz_list_free(files);
free(home);
}
char *path = rz_path_system(RZ_SDB_FORMAT);
if (path) {
files = rz_sys_dir(path);
rz_list_foreach (files, iter, fn) {
if (*fn && *fn != '.') {
rz_cons_println(fn);
}
}
rz_list_free(files);
free(path);
}
return RZ_CMD_STATUS_OK;
}
char *home_formats = rz_path_home_prefix(RZ_SDB_FORMAT);
char *home = rz_file_path_join(home_formats, argv[1]);
free(home_formats);
char *system_formats = rz_path_system(RZ_SDB_FORMAT);
char *path = rz_file_path_join(system_formats, argv[1]);
free(system_formats);
if (rz_str_endswith(argv[1], ".h")) {
char *error_msg = NULL;
const char *dir = rz_config_get(core->config, "dir.types");
int result = rz_type_parse_file(core->analysis->typedb, path, dir, &error_msg);
if (!result) {
rz_core_cmd0(core, ".ts*");
} else {
RZ_LOG_ERROR("core: Parse error: %s\n", error_msg);
free(error_msg);
}
} else {
if (!rz_core_cmd_file(core, home) && !rz_core_cmd_file(core, path)) {
if (!rz_core_cmd_file(core, _input + 3)) {
RZ_LOG_ERROR("core: pfo: cannot open format file at '%s'\n", path);
}
}
}
free(home);
free(path);
return RZ_CMD_STATUS_OK;
}

RZ_IPI RzCmdStatus rz_cmd_print_format_size_handler(RzCore *core, int argc, const char **argv) {
const char *val = rz_type_db_format_get(core->analysis->typedb, argv[1]);
if (!val) {
RZ_LOG_ERROR("Format \"%s\" could not be found\n", argv[1]);
return RZ_CMD_STATUS_ERROR;
}
int fmtsz = rz_type_format_struct_size(core->analysis->typedb, val, mode, 0);
rz_cons_printf("%d\n", fmtsz);
return RZ_CMD_STATUS_OK;
}

RZ_IPI RzCmdStatus rz_cmd_print_format_value_handler(RzCore *core, int argc, const char **argv) {
return RZ_CMD_STATUS_OK;
}

RZ_IPI RzCmdStatus rz_cmd_print_format_write_handler(RzCore *core, int argc, const char **argv) {
return RZ_CMD_STATUS_OK;
}
Loading

0 comments on commit 45733eb

Please sign in to comment.