format

1 files changed, 139 insertions, 109 deletions

diff --git a/src/afl-fuzz-cmplog.c b/src/afl-fuzz-cmplog.c
index 350cb105..924784cc 100644
--- a/src/afl-fuzz-cmplog.c
+++ b/src/afl-fuzz-cmplog.c
@@ -17,17 +17,19 @@
 
 u8 common_fuzz_cmplog_stuff(char** argv, u8* out_buf, u32 len);
 
-extern struct cmp_map* cmp_map; // defined in afl-sharedmem.c
+extern struct cmp_map* cmp_map;  // defined in afl-sharedmem.c
 
-u8* cmplog_binary;
+u8*    cmplog_binary;
 char** its_argv;
 
 ///// Colorization
 
 struct range {
-  u32 start;
-  u32 end;
-  struct range * next;
+
+  u32           start;
+  u32           end;
+  struct range* next;
+
 };
 
 struct range* add_range(struct range* ranges, u32 start, u32 end) {
@@ -46,36 +48,42 @@ struct range* pop_biggest_range(struct range** ranges) {
   struct range* prev = NULL;
   struct range* rmax = NULL;
   struct range* prev_rmax = NULL;
-  u32 max_size = 0;
-  
+  u32           max_size = 0;
+
   while (r) {
+
     u32 s = r->end - r->start;
     if (s >= max_size) {
+
       max_size = s;
       prev_rmax = prev;
       rmax = r;
+
     }
+
     prev = r;
     r = r->next;
+
   }
-  
+
   if (rmax) {
+
     if (prev_rmax)
       prev_rmax->next = rmax->next;
     else
       *ranges = rmax->next;
+
   }
-  
+
   return rmax;
 
 }
 
 u8 get_exec_checksum(u8* buf, u32 len, u32* cksum) {
 
-  if (unlikely(common_fuzz_stuff(its_argv, buf, len)))
-    return 1;
-  
-  *cksum = hash32(trace_bits, MAP_SIZE, HASH_CONST);  
+  if (unlikely(common_fuzz_stuff(its_argv, buf, len))) return 1;
+
+  *cksum = hash32(trace_bits, MAP_SIZE, HASH_CONST);
   return 0;
 
 }
@@ -91,50 +99,51 @@ static void rand_replace(u8* buf, u32 len) {
 u8 colorization(u8* buf, u32 len, u32 exec_cksum) {
 
   struct range* ranges = add_range(NULL, 0, len);
-  u8* backup = ck_alloc_nozero(len);
-  
+  u8*           backup = ck_alloc_nozero(len);
+
   u64 orig_hit_cnt, new_hit_cnt;
   orig_hit_cnt = queued_paths + unique_crashes;
-  
+
   stage_name = "colorization";
   stage_short = "colorization";
   stage_max = 1000;
-  
+
   struct range* rng;
   stage_cur = stage_max;
   while ((rng = pop_biggest_range(&ranges)) != NULL && stage_cur) {
-  
+
     u32 s = rng->end - rng->start;
     memcpy(backup, buf + rng->start, s);
     rand_replace(buf + rng->start, s);
-    
+
     u32 cksum;
-    if (unlikely(get_exec_checksum(buf, len, &cksum)))
-      return 1;
-    
+    if (unlikely(get_exec_checksum(buf, len, &cksum))) return 1;
+
     if (cksum != exec_cksum) {
-    
-      ranges = add_range(ranges, rng->start, rng->start + s/2);
-      ranges = add_range(ranges, rng->start + s/2 +1, rng->end);
+
+      ranges = add_range(ranges, rng->start, rng->start + s / 2);
+      ranges = add_range(ranges, rng->start + s / 2 + 1, rng->end);
       memcpy(buf + rng->start, backup, s);
-      
+
     }
-    
+
     ck_free(rng);
     --stage_cur;
-  
+
   }
-  
+
   new_hit_cnt = queued_paths + unique_crashes;
   stage_finds[STAGE_COLORIZATION] += new_hit_cnt - orig_hit_cnt;
   stage_cycles[STAGE_COLORIZATION] += stage_max - stage_cur;
-  
+
   while (ranges) {
+
     rng = ranges;
     ranges = ranges->next;
     ck_free(rng);
+
   }
-  
+
   return 0;
 
 }
@@ -147,21 +156,20 @@ u8 its_fuzz(u32 idx, u32 size, u8* buf, u32 len, u8* status) {
 
   orig_hit_cnt = queued_paths + unique_crashes;
 
-  if (unlikely(common_fuzz_stuff(its_argv, buf, len)))
-    return 1;
+  if (unlikely(common_fuzz_stuff(its_argv, buf, len))) return 1;
 
   new_hit_cnt = queued_paths + unique_crashes;
 
   if (unlikely(new_hit_cnt != orig_hit_cnt)) {
-  
+
     *status = 1;
-    
+
   } else {
-  
+
     if (size >= MIN_AUTO_EXTRA && size <= MAX_AUTO_EXTRA)
       maybe_add_auto(&buf[idx], size);
     *status = 2;
-    
+
   }
 
   return 0;
@@ -169,8 +177,9 @@ u8 its_fuzz(u32 idx, u32 size, u8* buf, u32 len, u8* status) {
 }
 
 u8 cmp_extend_encoding(struct cmp_header* h, u64 pattern, u64 repl, u32 idx,
-                       u8* orig_buf, u8* buf, u32 len, u8 do_reverse, u8* status) {
-  
+                       u8* orig_buf, u8* buf, u32 len, u8 do_reverse,
+                       u8* status) {
+
   u64* buf_64 = (u64*)&buf[idx];
   u32* buf_32 = (u32*)&buf[idx];
   u16* buf_16 = (u16*)&buf[idx];
@@ -179,59 +188,75 @@ u8 cmp_extend_encoding(struct cmp_header* h, u64 pattern, u64 repl, u32 idx,
   u32* o_buf_32 = (u32*)&orig_buf[idx];
   u16* o_buf_16 = (u16*)&orig_buf[idx];
   // u8*  o_buf_8  = &orig_buf[idx];
-  
+
   u32 its_len = len - idx;
   *status = 0;
 
   if (SHAPE_BYTES(h->shape) == 8) {
+
     if (its_len >= 8 && *buf_64 == pattern && *o_buf_64 == pattern) {
+
       *buf_64 = repl;
-      if (unlikely(its_fuzz(idx, 8, buf, len, status)))
-        return 1;
+      if (unlikely(its_fuzz(idx, 8, buf, len, status))) return 1;
       *buf_64 = pattern;
+
     }
+
     // reverse encoding
     if (do_reverse)
       if (unlikely(cmp_extend_encoding(h, SWAP64(pattern), SWAP64(repl), idx,
-                   orig_buf, buf, len, 0, status)))
-      return 1;
+                                       orig_buf, buf, len, 0, status)))
+        return 1;
+
   }
-  
+
   if (SHAPE_BYTES(h->shape) == 4 || *status == 2) {
+
     if (its_len >= 4 && *buf_32 == (u32)pattern && *o_buf_32 == (u32)pattern) {
+
       *buf_32 = (u32)repl;
-      if (unlikely(its_fuzz(idx, 4, buf, len, status)))
-        return 1;
+      if (unlikely(its_fuzz(idx, 4, buf, len, status))) return 1;
       *buf_32 = pattern;
+
     }
+
     // reverse encoding
     if (do_reverse)
       if (unlikely(cmp_extend_encoding(h, SWAP32(pattern), SWAP32(repl), idx,
-                   orig_buf, buf, len, 0, status)))
-      return 1;
+                                       orig_buf, buf, len, 0, status)))
+        return 1;
+
   }
 
   if (SHAPE_BYTES(h->shape) == 2 || *status == 2) {
+
     if (its_len >= 2 && *buf_16 == (u16)pattern && *o_buf_16 == (u16)pattern) {
+
       *buf_16 = (u16)repl;
-      if (unlikely(its_fuzz(idx, 2, buf, len, status)))
-        return 1;
+      if (unlikely(its_fuzz(idx, 2, buf, len, status))) return 1;
       *buf_16 = (u16)pattern;
+
     }
+
     // reverse encoding
     if (do_reverse)
       if (unlikely(cmp_extend_encoding(h, SWAP16(pattern), SWAP16(repl), idx,
-                   orig_buf, buf, len, 0, status)))
-      return 1;
+                                       orig_buf, buf, len, 0, status)))
+        return 1;
+
   }
-  
+
   /*if (SHAPE_BYTES(h->shape) == 1 || *status == 2) {
+
     if (its_len >= 2 && *buf_8 == (u8)pattern && *o_buf_8 == (u8)pattern) {
+
       *buf_8 = (u8)repl;
       if (unlikely(its_fuzz(idx, 1, buf, len, status)))
         return 1;
       *buf_16 = (u16)pattern;
+
     }
+
   }*/
 
   return 0;
@@ -241,44 +266,49 @@ u8 cmp_extend_encoding(struct cmp_header* h, u64 pattern, u64 repl, u32 idx,
 u8 cmp_fuzz(u32 key, u8* orig_buf, u8* buf, u32 len) {
 
   struct cmp_header* h = &cmp_map->headers[key];
-  u32 i, j, idx;
-  
+  u32                i, j, idx;
+
   u32 loggeds = h->hits;
-  if (h->hits > CMP_MAP_H)
-    loggeds = CMP_MAP_H;
-    
+  if (h->hits > CMP_MAP_H) loggeds = CMP_MAP_H;
+
   u8 status;
   // opt not in the paper
   u32 fails = 0;
-  
+
   for (i = 0; i < loggeds; ++i) {
-  
+
     struct cmp_operands* o = &cmp_map->log[key][i];
-    
+
     // opt not in the paper
     for (j = 0; j < i; ++j)
       if (cmp_map->log[key][j].v0 == o->v0 && cmp_map->log[key][i].v1 == o->v1)
         goto cmp_fuzz_next_iter;
-    
+
     for (idx = 0; idx < len && fails < 8; ++idx) {
-    
-      if (unlikely(cmp_extend_encoding(h, o->v0, o->v1, idx, orig_buf, buf, len, 1, &status)))
+
+      if (unlikely(cmp_extend_encoding(h, o->v0, o->v1, idx, orig_buf, buf, len,
+                                       1, &status)))
         return 1;
-      if (status == 2) ++fails;
-      else if (status == 1) break;
-      
-      if (unlikely(cmp_extend_encoding(h, o->v1, o->v0, idx, orig_buf, buf, len, 1, &status)))
+      if (status == 2)
+        ++fails;
+      else if (status == 1)
+        break;
+
+      if (unlikely(cmp_extend_encoding(h, o->v1, o->v0, idx, orig_buf, buf, len,
+                                       1, &status)))
         return 1;
-      if (status == 2) ++fails;
-      else if (status == 1) break;
-      
+      if (status == 2)
+        ++fails;
+      else if (status == 1)
+        break;
+
     }
 
-cmp_fuzz_next_iter:
+  cmp_fuzz_next_iter:
     stage_cur++;
-  
+
   }
-  
+
   return 0;
 
 }
@@ -286,67 +316,60 @@ cmp_fuzz_next_iter:
 ///// Input to State stage
 
 // queue_cur->exec_cksum
-u8 input_to_state_stage(char** argv, u8* orig_buf, u8* buf, u32 len, u32 exec_cksum) {
+u8 input_to_state_stage(char** argv, u8* orig_buf, u8* buf, u32 len,
+                        u32 exec_cksum) {
 
   its_argv = argv;
 
-  if (unlikely(colorization(buf, len, exec_cksum)))
-    return 1;
-  
+  if (unlikely(colorization(buf, len, exec_cksum))) return 1;
+
   // do it manually, forkserver clear only trace_bits
   memset(cmp_map->headers, 0, sizeof(cmp_map->headers));
-  
-  if (unlikely(common_fuzz_cmplog_stuff(argv, buf, len)))
-    return 1;
-  
+
+  if (unlikely(common_fuzz_cmplog_stuff(argv, buf, len))) return 1;
+
   u64 orig_hit_cnt, new_hit_cnt;
   u64 orig_execs = total_execs;
   orig_hit_cnt = queued_paths + unique_crashes;
-  
+
   stage_name = "input-to-state";
   stage_short = "its";
   stage_max = 0;
   stage_cur = 0;
-  
+
   u32 k;
   for (k = 0; k < CMP_MAP_W; ++k) {
 
-    if (!cmp_map->headers[k].hits)
-      continue;
+    if (!cmp_map->headers[k].hits) continue;
     if (cmp_map->headers[k].hits > CMP_MAP_H)
       stage_max += CMP_MAP_H;
     else
       stage_max += cmp_map->headers[k].hits;
 
   }
-  
+
   for (k = 0; k < CMP_MAP_W; ++k) {
 
-    if (!cmp_map->headers[k].hits)
-      continue;
+    if (!cmp_map->headers[k].hits) continue;
     cmp_fuzz(k, orig_buf, buf, len);
-  
+
   }
-  
+
   memcpy(buf, orig_buf, len);
-  
+
   new_hit_cnt = queued_paths + unique_crashes;
   stage_finds[STAGE_ITS] += new_hit_cnt - orig_hit_cnt;
   stage_cycles[STAGE_ITS] += total_execs - orig_execs;
-  
+
   return 0;
 
 }
 
-
 //// CmpLog forkserver
 
-s32 cmplog_forksrv_pid,
-    cmplog_child_pid,
-    cmplog_fsrv_ctl_fd,
-    cmplog_fsrv_st_fd;
+s32 cmplog_forksrv_pid, cmplog_child_pid, cmplog_fsrv_ctl_fd, cmplog_fsrv_st_fd;
 
-void init_cmplog_forkserver(char **argv) {
+void init_cmplog_forkserver(char** argv) {
 
   static struct itimerval it;
   int                     st_pipe[2], ctl_pipe[2];
@@ -475,7 +498,7 @@ void init_cmplog_forkserver(char **argv) {
     /* Use a distinctive bitmap signature to tell the parent about execv()
        falling through. */
 
-    *(u32 *)trace_bits = EXEC_FAIL_SIG;
+    *(u32*)trace_bits = EXEC_FAIL_SIG;
     exit(0);
 
   }
@@ -519,7 +542,9 @@ void init_cmplog_forkserver(char **argv) {
   }
 
   if (child_timed_out)
-    FATAL("Timeout while initializing cmplog fork server (adjusting -t may help)");
+    FATAL(
+        "Timeout while initializing cmplog fork server (adjusting -t may "
+        "help)");
 
   if (waitpid(cmplog_forksrv_pid, &status, 0) <= 0) PFATAL("waitpid() failed");
 
@@ -598,7 +623,7 @@ void init_cmplog_forkserver(char **argv) {
 
   }
 
-  if (*(u32 *)trace_bits == EXEC_FAIL_SIG)
+  if (*(u32*)trace_bits == EXEC_FAIL_SIG)
     FATAL("Unable to execute target application ('%s')", argv[0]);
 
   if (mem_limit && mem_limit < 500 && uses_asan) {
@@ -757,7 +782,7 @@ u8 run_cmplog_target(char** argv, u32 timeout) {
       setenv("MSAN_OPTIONS", "exit_code=" STRINGIFY(MSAN_ERROR) ":"
                              "symbolize=0:"
                              "msan_track_origins=0", 0);
-     
+
       setenv("__AFL_CMPLOG_MODE__", "1", 1);
 
       argv[0] = cmplog_binary;
@@ -781,18 +806,21 @@ u8 run_cmplog_target(char** argv, u32 timeout) {
     if ((res = write(cmplog_fsrv_ctl_fd, &prev_timed_out, 4)) != 4) {
 
       if (stop_soon) return 0;
-      RPFATAL(res, "Unable to request new process from cmplog fork server (OOM?)");
+      RPFATAL(res,
+              "Unable to request new process from cmplog fork server (OOM?)");
 
     }
 
     if ((res = read(cmplog_fsrv_st_fd, &cmplog_child_pid, 4)) != 4) {
 
       if (stop_soon) return 0;
-      RPFATAL(res, "Unable to request new process from cmplog fork server (OOM?)");
+      RPFATAL(res,
+              "Unable to request new process from cmplog fork server (OOM?)");
 
     }
 
-    if (cmplog_child_pid <= 0) FATAL("Cmplog fork server is misbehaving (OOM?)");
+    if (cmplog_child_pid <= 0)
+      FATAL("Cmplog fork server is misbehaving (OOM?)");
 
   }
 
@@ -804,7 +832,8 @@ u8 run_cmplog_target(char** argv, u32 timeout) {
 
   setitimer(ITIMER_REAL, &it, NULL);
 
-  /* The SIGALRM handler simply kills the cmplog_child_pid and sets child_timed_out. */
+  /* The SIGALRM handler simply kills the cmplog_child_pid and sets
+   * child_timed_out. */
 
   if (dumb_mode == 1 || no_forkserver) {
 
@@ -900,7 +929,7 @@ u8 run_cmplog_target(char** argv, u32 timeout) {
 u8 common_fuzz_cmplog_stuff(char** argv, u8* out_buf, u32 len) {
 
   u8 fault;
-  
+
   if (post_handler) {
 
     out_buf = post_handler(out_buf, &len);
@@ -948,3 +977,4 @@ u8 common_fuzz_cmplog_stuff(char** argv, u8* out_buf, u32 len) {
   return 0;
 
 }
+