1 /*
2  * Copyright (c) 2017-2019, 2021 Free Software Foundation, Inc.
3  *
4  * This file is part of GNU Wget.
5  *
6  * GNU Wget is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License as published by
8  * the Free Software Foundation; either version 3 of the License, or
9  * (at your option) any later version.
10  *
11  * GNU Wget is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14  * GNU General Public License for more details.
15  *
16  * You should have received a copy of the GNU General Public License
17  * along with Wget.  If not, see <https://www.gnu.org/licenses/>.
18  */
19 
20 #include <config.h>
21 
22 #include <sys/types.h>
23 #include <dirent.h> // opendir, readdir
24 #include <stdint.h> // uint8_t
25 #include <stdio.h>  // fmemopen
26 #include <string.h>  // strncmp
27 #include <stdlib.h>  // free
28 #include <fcntl.h>  // open flags
29 #include <unistd.h>  // close
30 #include <setjmp.h> // longjmp, setjmp
31 
32 #include "wget.h"
33 
34 #undef fopen_wgetrc
35 
36 #ifdef __cplusplus
37   extern "C" {
38 #endif
39   #include "progress.h"
40 
41   // declarations for wget internal functions
42   int main_wget(int argc, const char **argv);
43   void cleanup(void);
44   FILE *fopen_wget(const char *pathname, const char *mode);
45   FILE *fopen_wgetrc(const char *pathname, const char *mode);
46   void exit_wget(int status);
47 #ifdef __cplusplus
48   }
49 #endif
50 
51 #include "fuzzer.h"
52 
fopen_wget(const char * pathname,const char * mode)53 FILE *fopen_wget(const char *pathname, const char *mode)
54 {
55 	(void) pathname;
56 	return fopen("/dev/null", mode);
57 }
58 
fopen_wgetrc(const char * pathname,const char * mode)59 FILE *fopen_wgetrc(const char *pathname, const char *mode)
60 {
61 	(void) pathname;
62 	(void) mode;
63 	return NULL;
64 }
65 
66 #ifdef FUZZING
exit_wget(int status)67 void exit_wget(int status)
68 {
69 	(void) status;
70 }
71 #endif
72 
73 
74 #define NAMEPOS (2 * sizeof(wgint) + sizeof(double))
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)75 int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
76 {
77 	void *progress;
78 
79 	if (size > 4096) // same as max_len = ... in .options file
80 		return 0;
81 
82 	if (size < NAMEPOS)
83 		return 0;
84 
85 //	CLOSE_STDERR
86 
87 	wgint start = ((wgint *) data)[0];
88 	wgint end = ((wgint *) data)[1];
89 	double dltime = ((wgint *) data)[2];
90 
91 	if (start < 0 || end < 0)
92 		return 0;
93 
94 	if (start > end) {
95 		wgint x = start;
96 		start = end;
97 		end = x;
98 	}
99 
100 //	double dltime = ((double *) (data + 2 * sizeof(wgint)))[0];
101 
102 	char *filename = strndup((char *) (data + NAMEPOS), size - NAMEPOS);
103 
104 //	printf("%ld %ld %lf %s\n", start, end, dltime, filename);
105 
106 	set_progress_implementation("bar:force"); // [:force][:noscroll]
107 
108 	progress = progress_create (filename, start, end);
109 	progress_update (progress, 0, dltime);
110 	progress_update (progress, end - start, dltime);
111 	progress_finish (progress, dltime);
112 
113 	set_progress_implementation("dot:default");// [:default|:binary|:mega|:giga]
114 	progress = progress_create (filename, start, end);
115 	progress_update (progress, 0, dltime);
116 	progress_update (progress, end - start, dltime);
117 	progress_finish (progress, dltime);
118 
119 	set_progress_implementation("dot:binary");// [:default|:binary|:mega|:giga]
120 	progress = progress_create (filename, start, end);
121 	progress_update (progress, 0, dltime);
122 	progress_update (progress, end - start, dltime);
123 	progress_finish (progress, dltime);
124 
125 	set_progress_implementation("dot:mega");// [:default|:binary|:mega|:giga]
126 	progress = progress_create (filename, start, end);
127 	progress_update (progress, 0, dltime);
128 	progress_update (progress, end - start, dltime);
129 	progress_finish (progress, dltime);
130 
131 	set_progress_implementation("dot:giga");// [:default|:binary|:mega|:giga]
132 	progress = progress_create (filename, start, end);
133 	progress_update (progress, 0, dltime);
134 	progress_update (progress, end - start, dltime);
135 	progress_finish (progress, dltime);
136 
137 	free(filename);
138 
139 //	RESTORE_STDERR
140 
141 	return 0;
142 }
143