Rizin
unix-like reverse engineering framework and cli tools
Functions
common.c File Reference
#include "libgdbr.h"
#include "gdbr_common.h"
#include "packet.h"
#include "utils.h"
#include "rz_util/rz_str.h"

Go to the source code of this file.

Functions

int handle_qSupported (libgdbr_t *g)
 
int send_ack (libgdbr_t *g)
 Functions sends a single ack ('+') More...
 
int send_msg (libgdbr_t *g, const char *msg)
 Function sends a message to the remote gdb instance. More...
 

Function Documentation

◆ handle_qSupported()

int handle_qSupported ( libgdbr_t *  g)

Definition at line 12 of file common.c.

12  {
13  char *tok = NULL;
14  // Catch no data received
15  if (!*g->data) {
16  return -1;
17  }
18  // TODO handle the message correct and set all infos like packetsize, thread stuff and features
19  tok = strtok(g->data, ";");
20  while (tok) {
21  if (rz_str_startswith(tok, "PacketSize=")) {
22  // Largest packet size we support is 2048
23  g->stub_features.pkt_sz = RZ_MIN(strtoul(tok + strlen("PacketSize="), NULL, 16), 2048);
24  // Shouldn't be smaller than 64 (Erroneous 0 etc.)
25  g->stub_features.pkt_sz = RZ_MAX(g->stub_features.pkt_sz, 64);
26  } else if (rz_str_startswith(tok, "qXfer:")) {
27  if (!tok[6]) {
28  tok = strtok(NULL, ";");
29  continue;
30  }
31  char *p = tok + 6;
32  if (rz_str_startswith(p, "btrace:read")) {
33  g->stub_features.qXfer_btrace_read = (p[strlen("btrace:read")] == '+');
34  } else if (rz_str_startswith(p, "btrace-conf:read")) {
35  g->stub_features.qXfer_btrace_conf_read = (p[strlen("btrace-conf:read")] == '+');
36  } else if (rz_str_startswith(p, "spu:read")) {
37  g->stub_features.qXfer_spu_read = (p[strlen("spu:read")] == '+');
38  } else if (rz_str_startswith(p, "spu:write")) {
39  g->stub_features.qXfer_spu_write = (p[strlen("spu:write")] == '+');
40  } else if (rz_str_startswith(p, "libraries:read")) {
41  g->stub_features.qXfer_libraries_read = (p[strlen("libraries:read")] == '+');
42  } else if (rz_str_startswith(p, "libraries-svr4:read")) {
43  g->stub_features.qXfer_libraries_svr4_read = (p[strlen("libraries-svr4:read")] == '+');
44  } else if (rz_str_startswith(p, "memory-map:read")) {
45  g->stub_features.qXfer_memory_map_read = (p[strlen("memory-map:read")] == '+');
46  } else if (rz_str_startswith(p, "auxv:read")) {
47  g->stub_features.qXfer_auxv_read = (p[strlen("auxv:read")] == '+');
48  } else if (rz_str_startswith(p, "exec-file:read")) {
49  g->stub_features.qXfer_exec_file_read = (p[strlen("exec-file:read")] == '+');
50  } else if (rz_str_startswith(p, "features:read")) {
51  g->stub_features.qXfer_features_read = (p[strlen("features:read")] == '+');
52  } else if (rz_str_startswith(p, "sdata:read")) {
53  g->stub_features.qXfer_sdata_read = (p[strlen("sdata:read")] == '+');
54  } else if (rz_str_startswith(p, "siginfo:read")) {
55  g->stub_features.qXfer_siginfo_read = (p[strlen("siginfo:read")] == '+');
56  } else if (rz_str_startswith(p, "siginfo:write")) {
57  g->stub_features.qXfer_siginfo_write = (p[strlen("siginfo:write")] == '+');
58  } else if (rz_str_startswith(p, "threads:read")) {
59  g->stub_features.qXfer_threads_read = (p[strlen("threads:read")] == '+');
60  } else if (rz_str_startswith(p, "traceframe-info:read")) {
61  g->stub_features.qXfer_traceframe_info_read = (p[strlen("traceframe-info:read")] == '+');
62  } else if (rz_str_startswith(p, "uib:read")) {
63  g->stub_features.qXfer_uib_read = (p[strlen("uib:read")] == '+');
64  } else if (rz_str_startswith(p, "fdpic:read")) {
65  g->stub_features.qXfer_fdpic_read = (p[strlen("fdpic:read")] == '+');
66  } else if (rz_str_startswith(p, "osdata:read")) {
67  g->stub_features.qXfer_osdata_read = (p[strlen("osdata:read")] == '+');
68  }
69  } else if (tok[0] == 'Q') {
70  if (rz_str_startswith(tok, "Qbtrace")) {
71  if (!tok[strlen("Qbtrace")]) {
72  tok = strtok(NULL, ";");
73  continue;
74  }
75  char *p = tok + 7;
76  if (rz_str_startswith(p, ":off")) {
77  g->stub_features.Qbtrace_off = (p[4] == '+');
78  } else if (rz_str_startswith(p, ":bts")) {
79  g->stub_features.Qbtrace_bts = (p[4] == '+');
80  } else if (rz_str_startswith(p, ":pt")) {
81  g->stub_features.Qbtrace_pt = (p[3] == '+');
82  } else if (rz_str_startswith(p, "-conf:bts:size")) {
83  g->stub_features.Qbtrace_conf_bts_size = (p[strlen("-conf:bts:size")] == '+');
84  } else if (rz_str_startswith(p, ":-conf:pt:size")) {
85  g->stub_features.Qbtrace_conf_pt_size = (p[strlen("-conf:pt:size")] == '+');
86  }
87  } else if (rz_str_startswith(tok, "QNonStop")) {
88  g->stub_features.QNonStop = (tok[strlen("QNonStop")] == '+');
89  } else if (rz_str_startswith(tok, "QCatchSyscalls")) {
90  g->stub_features.QCatchSyscalls = (tok[strlen("QCatchSyscalls")] == '+');
91  } else if (rz_str_startswith(tok, "QPassSignals")) {
92  g->stub_features.QPassSignals = (tok[strlen("QPassSignals")] == '+');
93  } else if (rz_str_startswith(tok, "QStartNoAckMode")) {
94  g->stub_features.QStartNoAckMode = (tok[strlen("QStartNoAckMode")] == '+');
95  } else if (rz_str_startswith(tok, "QAgent")) {
96  g->stub_features.QAgent = (tok[strlen("QAgent")] == '+');
97  } else if (rz_str_startswith(tok, "QAllow")) {
98  g->stub_features.QAllow = (tok[strlen("QAllow")] == '+');
99  } else if (rz_str_startswith(tok, "QDisableRandomization")) {
100  g->stub_features.QDisableRandomization = (tok[strlen("QDisableRandomization")] == '+');
101  } else if (rz_str_startswith(tok, "QTBuffer:size")) {
102  g->stub_features.QTBuffer_size = (tok[strlen("QTBuffer:size")] == '+');
103  } else if (rz_str_startswith(tok, "QThreadEvents")) {
104  g->stub_features.QThreadEvents = (tok[strlen("QThreadEvents")] == '+');
105  } else if (rz_str_startswith(tok, "QThreadSuffixSupported")) {
106  g->remote_type = GDB_REMOTE_TYPE_LLDB;
107  g->stub_features.lldb.QThreadSuffixSupported = (tok[strlen("QThreadSuffixSupported")] == '+');
108  } else if (rz_str_startswith(tok, "QListThreadsInStopReply")) {
109  g->remote_type = GDB_REMOTE_TYPE_LLDB;
110  g->stub_features.lldb.QListThreadsInStopReply = (tok[strlen("QListThreadsInStopReply")] == '+');
111  }
112  } else if (rz_str_startswith(tok, "multiprocess")) {
113  g->stub_features.multiprocess = (tok[strlen("multiprocess")] == '+');
114  } else if (rz_str_startswith(tok, "qEcho")) {
115  g->remote_type = GDB_REMOTE_TYPE_LLDB;
116  g->stub_features.lldb.qEcho = (tok[strlen("qEcho")] == '+');
117  } else if (rz_str_startswith(tok, "ReverseStep")) {
118  g->stub_features.ReverseStep = (tok[strlen("ReverseStep")] == '+');
119  } else if (rz_str_startswith(tok, "ReverseContinue")) {
120  g->stub_features.ReverseContinue = (tok[strlen("ReverseContinue")] == '+');
121  }
122  // TODO
123  tok = strtok(NULL, ";");
124  }
125  return send_ack(g);
126 }
NULL
#define NULL
Definition: cris-opc.c:27
g
struct @667 g
p
void * p
Definition: libc.cpp:67
GDB_REMOTE_TYPE_LLDB
#define GDB_REMOTE_TYPE_LLDB
Definition: libgdbr.h:20
rz_str_startswith
RZ_API bool rz_str_startswith(RZ_NONNULL const char *str, RZ_NONNULL const char *needle)
Checks if a string starts with a specifc sequence of characters (case sensitive)
Definition: str.c:3286
RZ_MIN
#define RZ_MIN(x, y)
Definition: rz_types_base.h:140
RZ_MAX
#define RZ_MAX(x, y)
Definition: rz_types_base.h:136
send_ack
int send_ack(libgdbr_t *g)
Functions sends a single ack ('+')
Definition: common.c:130

References g, GDB_REMOTE_TYPE_LLDB, NULL, p, RZ_MAX, RZ_MIN, rz_str_startswith(), and send_ack().

Referenced by _server_handle_qSupported(), and gdbr_connect().

◆ send_ack()

int send_ack ( libgdbr_t *  g)

Functions sends a single ack ('+')

Parameters
gthe "instance" of the current libgdbr session
Returns
-1 if something went wrong

Definition at line 130 of file common.c.

130  {
131  if (g) {
132  if (g->no_ack) {
133  return 0;
134  }
135  if (rz_socket_write(g->sock, "+", 1) < 0) {
136  return -1;
137  }
138  if (g->server_debug) {
139  eprintf("[sent ack]\n");
140  }
141  return 0;
142  }
143  return -1;
144 }
eprintf
#define eprintf(x, y...)
Definition: rlcc.c:7
rz_socket_write
RZ_API int rz_socket_write(RzSocket *s, void *buf, int len)
Definition: socket.c:724

References eprintf, g, and rz_socket_write().

Referenced by _server_handle_c(), _server_handle_exec_file_read(), _server_handle_g(), _server_handle_Hc(), _server_handle_Hg(), _server_handle_k(), _server_handle_M(), _server_handle_m(), _server_handle_p(), _server_handle_P(), _server_handle_qAttached(), _server_handle_qC(), _server_handle_qfThreadInfo(), _server_handle_qOffsets(), _server_handle_qsThreadInfo(), _server_handle_qTfV(), _server_handle_qTStatus(), _server_handle_ques(), _server_handle_s(), _server_handle_vCont(), _server_handle_vKill(), _server_handle_vMustReplyEmpty(), _server_handle_z(), gdbr_check_extended_mode(), gdbr_check_vcont(), gdbr_connect(), gdbr_connect_lldb(), gdbr_detach_pid(), gdbr_exec_file_read(), gdbr_get_baddr(), gdbr_is_thread_dead(), gdbr_kill_pid(), gdbr_pids_list(), gdbr_read_feature(), gdbr_read_osdata(), gdbr_select(), gdbr_send_qRcmd(), gdbr_server_serve(), gdbr_threads_list(), handle_attach(), handle_g(), handle_G(), handle_lldb_read_reg(), handle_m(), handle_M(), handle_P(), handle_qC(), handle_qStatus(), handle_qSupported(), handle_removebp(), handle_setbp(), handle_stop_reason(), handle_vFile_close(), handle_vFile_open(), and handle_vFile_pread().

◆ send_msg()

int send_msg ( libgdbr_t *  g,
const char *  msg 
)

Function sends a message to the remote gdb instance.

Parameters
gthe "instance" of the current libgdbr session
msgthe message that will be sent
Returns
a failure code (currently -1) or 0 if call successfully

Definition at line 146 of file common.c.

146  {
147  int ret;
148  if (!g || !msg) {
149  return -1;
150  }
151  ret = pack(g, msg);
152  if (ret < 0) {
153  return -1;
154  }
155  ret = send_packet(g);
156  g->send_len = ret;
157  return ret;
158 }
send_packet
int send_packet(libgdbr_t *g)
sends a packet sends a packet to the established connection
Definition: packet.c:193
pack
int pack(libgdbr_t *g, const char *msg)
Definition: packet.c:206
msg
static struct sockaddr static addrlen static backlog const void msg
Definition: sfsocketcall.h:119

References g, msg, pack(), and send_packet().

Referenced by __system(), _server_handle_c(), _server_handle_exec_file_read(), _server_handle_g(), _server_handle_Hc(), _server_handle_Hg(), _server_handle_M(), _server_handle_m(), _server_handle_p(), _server_handle_P(), _server_handle_qAttached(), _server_handle_qC(), _server_handle_qfThreadInfo(), _server_handle_qOffsets(), _server_handle_qsThreadInfo(), _server_handle_qSupported(), _server_handle_qTfV(), _server_handle_qTStatus(), _server_handle_ques(), _server_handle_s(), _server_handle_vCont(), _server_handle_vKill(), _server_handle_vMustReplyEmpty(), _server_handle_z(), gdbr_attach(), gdbr_check_extended_mode(), gdbr_check_vcont(), gdbr_close_file(), gdbr_connect(), gdbr_connect_lldb(), gdbr_detach(), gdbr_detach_pid(), gdbr_exec_file_read(), gdbr_get_baddr(), gdbr_is_thread_dead(), gdbr_kill(), gdbr_kill_pid(), gdbr_open_file(), gdbr_pids_list(), gdbr_read_feature(), gdbr_read_file(), gdbr_read_memory_page(), gdbr_read_osdata(), gdbr_read_registers(), gdbr_read_registers_lldb(), gdbr_select(), gdbr_send_qRcmd(), gdbr_server_serve(), gdbr_stop_reason(), gdbr_threads_list(), gdbr_write_bin_registers(), gdbr_write_memory(), gdbr_write_register(), gdbr_write_registers(), remove_bp(), send_vcont(), set_bp(), and test_command().