Bug Summary

File:thumbnailer/lector-thumbnailer.c
Warning:line 267, column 3
This statement is never executed

Annotated Source Code

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clang -cc1 -cc1 -triple x86_64-pc-linux-gnu -analyze -disable-free -clear-ast-before-backend -disable-llvm-verifier -discard-value-names -main-file-name lector-thumbnailer.c -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -setup-static-analyzer -mrelocation-model pic -pic-level 2 -pic-is-pie -mframe-pointer=all -fmath-errno -ffp-contract=on -fno-rounding-math -mconstructor-aliases -funwind-tables=2 -target-cpu x86-64 -tune-cpu generic -debugger-tuning=gdb -fcoverage-compilation-dir=/rootdir/thumbnailer -resource-dir /usr/lib/llvm-16/lib/clang/16 -D HAVE_CONFIG_H -I . -I .. -I .. -I .. -I /usr/include/ctk-3.0 -I /usr/include/pango-1.0 -I /usr/include/glib-2.0 -I /usr/lib/x86_64-linux-gnu/glib-2.0/include -I /usr/include/harfbuzz -I /usr/include/freetype2 -I /usr/include/libpng16 -I /usr/include/libmount -I /usr/include/blkid -I /usr/include/fribidi -I /usr/include/cairo -I /usr/include/pixman-1 -I /usr/include/gdk-pixbuf-2.0 -I /usr/include/x86_64-linux-gnu -I /usr/include/webp -I /usr/include/gio-unix-2.0 -I /usr/include/atk-1.0 -I /usr/include/at-spi2-atk/2.0 -I /usr/include/at-spi-2.0 -I /usr/include/dbus-1.0 -I /usr/lib/x86_64-linux-gnu/dbus-1.0/include -internal-isystem /usr/lib/llvm-16/lib/clang/16/include -internal-isystem /usr/local/include -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/13/../../../../x86_64-linux-gnu/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -fdebug-compilation-dir=/rootdir/thumbnailer -ferror-limit 19 -fgnuc-version=4.2.1 -analyzer-checker deadcode.DeadStores -analyzer-checker alpha.deadcode.UnreachableCode -analyzer-checker alpha.core.CastSize -analyzer-checker alpha.core.CastToStruct -analyzer-checker alpha.core.IdenticalExpr -analyzer-checker alpha.core.SizeofPtr -analyzer-checker alpha.security.ArrayBoundV2 -analyzer-checker alpha.security.MallocOverflow -analyzer-checker alpha.security.ReturnPtrRange -analyzer-checker alpha.unix.SimpleStream -analyzer-checker alpha.unix.cstring.BufferOverlap -analyzer-checker alpha.unix.cstring.NotNullTerminated -analyzer-checker alpha.unix.cstring.OutOfBounds -analyzer-checker alpha.core.FixedAddr -analyzer-output=html -faddrsig -D__GCC_HAVE_DWARF2_CFI_ASM=1 -o /rootdir/html-report/2024-02-18-115154-54189-1 -x c lector-thumbnailer.c
1/*
2 Copyright (C) 2005 Fernando Herrera <fherrera@onirica.com>
3
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
8
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
13
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
17*/
18
19#include <config.h>
20
21#include <lector-document.h>
22
23#include <gio/gio.h>
24
25#include <stdlib.h>
26#include <string.h>
27
28#define THUMBNAIL_SIZE128 128
29#define DEFAULT_SLEEP_TIME(15 * 1000000) (15 * G_USEC_PER_SEC1000000) /* 15 seconds */
30
31static gboolean finished = TRUE(!(0));
32
33static gint size = THUMBNAIL_SIZE128;
34static gboolean time_limit = TRUE(!(0));
35static char **file_arguments = NULL((void*)0);
36
37static const GOptionEntry goption_options[] = {
38 { "size", 's', 0, G_OPTION_ARG_INT, &size, NULL((void*)0), "SIZE" },
39 { "no-limit", 'l', G_OPTION_FLAG_REVERSE, G_OPTION_ARG_NONE, &time_limit, "Don't limit the thumbnailing time to 15 seconds", NULL((void*)0) },
40 { G_OPTION_REMAINING"", 0, 0, G_OPTION_ARG_FILENAME_ARRAY, &file_arguments, NULL((void*)0), "<input> <ouput>" },
41 { NULL((void*)0) }
42};
43
44struct AsyncData {
45 EvDocument *document;
46 const gchar *output;
47 gint size;
48 gboolean success;
49};
50
51/* Time monitor: copied from totem */
52G_GNUC_NORETURN__attribute__ ((__noreturn__)) static gpointer
53time_monitor (gpointer data)
54{
55 const gchar *app_name;
56
57 g_usleep (DEFAULT_SLEEP_TIME(15 * 1000000));
58
59 if (finished)
60 g_thread_exit (NULL((void*)0));
61
62 app_name = g_get_application_name ();
63 if (app_name == NULL((void*)0))
64 app_name = g_get_prgname ();
65 g_printerr ("%s couldn't process file: '%s'\n"
66 "Reason: Took too much time to process.\n",
67 app_name,
68 (const char *) data);
69
70 exit (0);
71}
72
73static void
74time_monitor_start (const char *input)
75{
76 finished = FALSE(0);
77 g_thread_new ("EvThumbnailerTimer", time_monitor, (gpointer) input);
78}
79
80static void
81time_monitor_stop (void)
82{
83 finished = TRUE(!(0));
84}
85
86static void
87delete_temp_file (GFile *file)
88{
89 ev_tmp_file_unlink (file);
90 g_object_unref (file);
91}
92
93static EvDocument *
94lector_thumbnailer_get_document (GFile *file)
95{
96 EvDocument *document = NULL((void*)0);
97 gchar *uri;
98 GFile *tmp_file = NULL((void*)0);
99 GError *error = NULL((void*)0);
100
101 if (!g_file_is_native (file)) {
102 gchar *base_name, *template;
103
104 base_name = g_file_get_basename (file);
105 template = g_strdup_printf ("document.XXXXXX-%s", base_name);
106 g_free (base_name);
107
108 tmp_file = ev_mkstemp_file (template, &error);
109 g_free (template);
110 if (!tmp_file) {
111 g_printerr ("Error loading remote document: %s\n", error->message);
112 g_error_free (error);
113
114 return NULL((void*)0);
115 }
116
117 g_file_copy (file, tmp_file, G_FILE_COPY_OVERWRITE,
118 NULL((void*)0), NULL((void*)0), NULL((void*)0), &error);
119 if (error) {
120 g_printerr ("Error loading remote document: %s\n", error->message);
121 g_error_free (error);
122 g_object_unref (tmp_file);
123
124 return NULL((void*)0);
125 }
126 uri = g_file_get_uri (tmp_file);
127 } else {
128 uri = g_file_get_uri (file);
129 }
130
131 document = ev_document_factory_get_document (uri, &error);
132 if (tmp_file) {
133 if (document) {
134 g_object_weak_ref (G_OBJECT (document)((((GObject*) (void *) g_type_check_instance_cast ((GTypeInstance
*) ((document)), (((GType) ((20) << (2)))))))),
135 (GWeakNotify)delete_temp_file,
136 tmp_file);
137 } else {
138 ev_tmp_file_unlink (tmp_file);
139 g_object_unref (tmp_file);
140 }
141 }
142 g_free (uri);
143 if (error) {
144 if (error->domain == EV_DOCUMENT_ERRORev_document_error_quark () &&
145 error->code == EV_DOCUMENT_ERROR_ENCRYPTED) {
146 /* FIXME: Create a thumb for cryp docs */
147 g_error_free (error);
148 return NULL((void*)0);
149 }
150 g_printerr ("Error loading document: %s\n", error->message);
151 g_error_free (error);
152 return NULL((void*)0);
153 }
154
155 return document;
156}
157
158static gboolean
159lector_thumbnail_pngenc_get (EvDocument *document, const char *thumbnail, int size)
160{
161 EvRenderContext *rc;
162 double width, height;
163 GdkPixbuf *pixbuf;
164 EvPage *page;
165
166 page = ev_document_get_page (document, 0);
167
168 ev_document_get_page_size (document, 0, &width, &height);
169
170 rc = ev_render_context_new (page, 0, size / width);
171 pixbuf = ev_document_thumbnails_get_thumbnail (EV_DOCUMENT_THUMBNAILS (document)((((EvDocumentThumbnails*) (void *) g_type_check_instance_cast
((GTypeInstance*) ((document)), ((ev_document_thumbnails_get_type
())))))),
172 rc, FALSE(0));
173 g_object_unref (rc);
174 g_object_unref (page);
175
176 if (pixbuf != NULL((void*)0)) {
177 if (gdk_pixbuf_save (pixbuf, thumbnail, "png", NULL((void*)0), NULL((void*)0))) {
178 g_object_unref (pixbuf);
179 return TRUE(!(0));
180 }
181
182 g_object_unref (pixbuf);
183 }
184
185 return FALSE(0);
186}
187
188static gpointer
189lector_thumbnail_pngenc_get_async (struct AsyncData *data)
190{
191 ev_document_doc_mutex_lock ();
192 data->success = lector_thumbnail_pngenc_get (data->document,
193 data->output,
194 data->size);
195 ev_document_doc_mutex_unlock ();
196
197 g_idle_add ((GSourceFunc)ctk_main_quit, NULL((void*)0));
198
199 return NULL((void*)0);
200}
201
202static void
203print_usage (GOptionContext *context)
204{
205 gchar *help;
206
207 help = g_option_context_get_help (context, TRUE(!(0)), NULL((void*)0));
208 g_print ("%s", help);
209 g_free (help);
210}
211
212int
213main (int argc, char *argv[])
214{
215 EvDocument *document;
216 GOptionContext *context;
217 const char *input;
218 const char *output;
219 GFile *file;
220 GError *error = NULL((void*)0);
221
222 context = g_option_context_new ("- CAFE Document Thumbnailer");
223 g_option_context_add_main_entries (context, goption_options, NULL((void*)0));
224
225 if (!g_option_context_parse (context, &argc, &argv, &error)) {
226 g_printerr ("%s\n", error->message);
227 g_error_free (error);
228 print_usage (context);
229 g_option_context_free (context);
230 if (file_arguments)
231 g_strfreev (file_arguments);
232
233 return -1;
234 }
235
236 if (file_arguments == NULL((void*)0) || g_strv_length (file_arguments) != 2) {
237 print_usage (context);
238 g_option_context_free (context);
239 if (file_arguments)
240 g_strfreev (file_arguments);
241
242 return -1;
243 }
244
245 g_option_context_free (context);
246
247 if (size < 1) {
248 g_printerr ("Size cannot be smaller than 1 pixel\n");
249 g_strfreev (file_arguments);
250
251 return -1;
252 }
253
254 input = file_arguments[0];
255 output = file_arguments[1];
256
257 if (!ev_init ()) {
258 g_strfreev (file_arguments);
259 return -1;
260 }
261
262 file = g_file_new_for_commandline_arg (input);
263 document = lector_thumbnailer_get_document (file);
264 g_object_unref (file);
265
266 if (!document) {
267 ev_shutdown ();
This statement is never executed
268 g_strfreev (file_arguments);
269
270 return -2;
271 }
272
273 if (!EV_IS_DOCUMENT_THUMBNAILS (document)(((__extension__ ({ GTypeInstance *__inst = (GTypeInstance*) (
(document)); GType __t = ((ev_document_thumbnails_get_type ()
)); gboolean __r; if (!__inst) __r = (0); else if (__inst->
g_class && __inst->g_class->g_type == __t) __r =
(!(0)); else __r = g_type_check_instance_is_a (__inst, __t);
__r; }))))) {
274 g_object_unref (document);
275 ev_shutdown ();
276 g_strfreev (file_arguments);
277
278 return -2;
279 }
280
281 if (time_limit)
282 time_monitor_start (input);
283
284 if (EV_IS_ASYNC_RENDERER (document)(((__extension__ ({ GTypeInstance *__inst = (GTypeInstance*) (
(document)); GType __t = ((ev_async_renderer_get_type ())); gboolean
__r; if (!__inst) __r = (0); else if (__inst->g_class &&
__inst->g_class->g_type == __t) __r = (!(0)); else __r
= g_type_check_instance_is_a (__inst, __t); __r; }))))) {
285 struct AsyncData data;
286
287 ctk_init (&argc, &argv);
288
289 data.document = document;
290 data.output = output;
291 data.size = size;
292
293 g_thread_new ("EvThumbnailerAsyncRenderer",
294 (GThreadFunc) lector_thumbnail_pngenc_get_async,
295 &data);
296
297 ctk_main ();
298
299 g_object_unref (document);
300 ev_shutdown ();
301 g_strfreev (file_arguments);
302
303 return data.success ? 0 : -2;
304 }
305
306 if (!lector_thumbnail_pngenc_get (document, output, size)) {
307 g_object_unref (document);
308 ev_shutdown ();
309 g_strfreev (file_arguments);
310
311 return -2;
312 }
313
314 time_monitor_stop ();
315 g_object_unref (document);
316 ev_shutdown ();
317 g_strfreev (file_arguments);
318
319 return 0;
320}