File: | xlsatoms.c |
Location: | line 206, column 5 |
Description: | Function call argument is an uninitialized value |
1 | /* | |||
2 | * | |||
3 | Copyright 1989, 1998 The Open Group | |||
4 | Copyright 2009 Open Text Corporation | |||
5 | ||||
6 | Permission to use, copy, modify, distribute, and sell this software and its | |||
7 | documentation for any purpose is hereby granted without fee, provided that | |||
8 | the above copyright notice appear in all copies and that both that | |||
9 | copyright notice and this permission notice appear in supporting | |||
10 | documentation. | |||
11 | ||||
12 | The above copyright notice and this permission notice shall be included in | |||
13 | all copies or substantial portions of the Software. | |||
14 | ||||
15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |||
16 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |||
17 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |||
18 | OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN | |||
19 | AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | |||
20 | CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. | |||
21 | ||||
22 | Except as contained in this notice, the name of The Open Group shall not be | |||
23 | used in advertising or otherwise to promote the sale, use or other dealings | |||
24 | in this Software without prior written authorization from The Open Group. | |||
25 | * | |||
26 | * Author: Jim Fulton, MIT X Consortium | |||
27 | * Author: Peter Harris, Open Text Corporation | |||
28 | */ | |||
29 | ||||
30 | #ifdef HAVE_CONFIG_H1 | |||
31 | # include "config.h" | |||
32 | #endif | |||
33 | ||||
34 | #include <stdio.h> | |||
35 | #include <stdlib.h> | |||
36 | #include <string.h> | |||
37 | #include <xcb/xcb.h> | |||
38 | #include <xcb/xproto.h> | |||
39 | ||||
40 | #define ATOMS_PER_BATCH100 100 /* This number can be tuned | |||
41 | higher for fewer round-trips | |||
42 | lower for less bandwidth wasted */ | |||
43 | ||||
44 | static const char *ProgramName; | |||
45 | static const char *DisplayString; | |||
46 | ||||
47 | static void do_name ( xcb_connection_t *c, const char *format, char *name ); | |||
48 | static int parse_range ( char *range, long *lowp, long *highp ); | |||
49 | static void do_range ( xcb_connection_t *c, const char *format, char *range ); | |||
50 | static void list_atoms ( xcb_connection_t *c, const char *format, int mask, | |||
51 | long low, long high ); | |||
52 | ||||
53 | static void | |||
54 | usage(const char *errmsg) | |||
55 | { | |||
56 | if (errmsg != NULL((void *)0)) | |||
57 | fprintf (stderr__stderrp, "%s: %s\n\n", ProgramName, errmsg); | |||
58 | ||||
59 | fprintf (stderr__stderrp, "usage: %s [-options...]\n\n%s\n", ProgramName, | |||
60 | "where options include:\n" | |||
61 | " -display dpy X server to which to connect\n" | |||
62 | " -format string printf-style format to use\n" | |||
63 | " -range [num]-[num] atom values to list\n" | |||
64 | " -name string name of single atom to print\n" | |||
65 | " -version print program version\n" | |||
66 | ); | |||
67 | exit (1); | |||
68 | } | |||
69 | ||||
70 | int | |||
71 | main(int argc, char *argv[]) | |||
72 | { | |||
73 | char *displayname = NULL((void *)0); | |||
74 | const char *format = "%lu\t%s"; | |||
75 | int i, doit; | |||
76 | int didit = 0; | |||
77 | xcb_connection_t *c = NULL((void *)0); | |||
78 | ||||
79 | ProgramName = argv[0]; | |||
80 | ||||
81 | for (doit = 0; doit < 2; doit++) { /* pre-parse to get display */ | |||
| ||||
82 | for (i = 1; i < argc; i++) { | |||
83 | char *arg = argv[i]; | |||
84 | ||||
85 | if (arg[0] == '-') { | |||
86 | switch (arg[1]) { | |||
87 | case 'd': /* -display dpy */ | |||
88 | if (++i >= argc) usage ("-display requires an argument"); | |||
89 | if (!doit) displayname = argv[i]; | |||
90 | continue; | |||
91 | case 'f': /* -format string */ | |||
92 | if (++i >= argc) usage ("-format requires an argument"); | |||
93 | if (doit) format = argv[i]; | |||
94 | continue; | |||
95 | case 'r': /* -range num-[num] */ | |||
96 | if (++i >= argc) usage ("-range requires an argument"); | |||
97 | if (doit) { | |||
98 | do_range (c, format, argv[i]); | |||
99 | didit = 1; | |||
100 | } | |||
101 | continue; | |||
102 | case 'n': /* -name string */ | |||
103 | if (++i >= argc) usage ("-name requires an argument"); | |||
104 | if (doit) { | |||
105 | do_name (c, format, argv[i]); | |||
106 | didit = 1; | |||
107 | } | |||
108 | continue; | |||
109 | case 'v': | |||
110 | if (strcmp(arg, "-version") == 0) { | |||
111 | puts(PACKAGE_STRING"xlsatoms 1.1.2"); | |||
112 | exit(0); | |||
113 | } | |||
114 | /* else FALLTHROUGH to unrecognized arg case below */ | |||
115 | } | |||
116 | } | |||
117 | fprintf (stderr__stderrp, "%s: unrecognized argument %s\n\n", | |||
118 | ProgramName, arg); | |||
119 | usage (NULL((void *)0)); | |||
120 | } | |||
121 | if (!doit) { | |||
122 | DisplayString = displayname; | |||
123 | if (!DisplayString) | |||
124 | DisplayString = getenv("DISPLAY"); | |||
125 | if (!DisplayString) | |||
126 | DisplayString = ""; | |||
127 | c = xcb_connect(displayname, NULL((void *)0)); | |||
128 | if (!c || xcb_connection_has_error(c)) { | |||
129 | fprintf (stderr__stderrp, "%s: unable to open display \"%s\"\n", | |||
130 | ProgramName, DisplayString); | |||
131 | exit (1); | |||
132 | } | |||
133 | } else | |||
134 | if (!didit) /* no options, default is list all */ | |||
135 | list_atoms(c, format, 0, 0, 0); | |||
136 | } | |||
137 | ||||
138 | xcb_disconnect(c); | |||
139 | exit (0); | |||
140 | } | |||
141 | ||||
142 | static void | |||
143 | do_name(xcb_connection_t *c, const char *format, char *name) | |||
144 | { | |||
145 | xcb_intern_atom_reply_t *a = xcb_intern_atom_reply(c, | |||
146 | xcb_intern_atom_unchecked(c, 1, strlen(name), name), NULL((void *)0)); | |||
147 | ||||
148 | if (a && a->atom != XCB_NONE0L) { | |||
149 | printf (format, (unsigned long) a->atom, name); | |||
150 | putchar ('\n'); | |||
151 | } else { | |||
152 | fprintf (stderr__stderrp, "%s: no atom named \"%s\" on server \"%s\"\n", | |||
153 | ProgramName, name, DisplayString); | |||
154 | } | |||
155 | ||||
156 | if (a) | |||
157 | free(a); | |||
158 | } | |||
159 | ||||
160 | ||||
161 | #define RangeLow(1 << 0) (1 << 0) | |||
162 | #define RangeHigh(1 << 1) (1 << 1) | |||
163 | ||||
164 | static int | |||
165 | parse_range(char *range, long *lowp, long *highp) | |||
166 | { | |||
167 | char *dash; | |||
168 | int mask = 0; | |||
169 | ||||
170 | if (!range) { /* NULL means default */ | |||
171 | *lowp = 1; | |||
172 | return RangeLow(1 << 0); | |||
173 | } | |||
174 | ||||
175 | dash = strchr(range, '-'); | |||
176 | if (!dash) dash = strchr(range, ':'); | |||
177 | if (dash) { | |||
178 | if (dash == range) { /* -high */ | |||
179 | *lowp = 1; | |||
180 | } else { /* low-[high] */ | |||
181 | *dash = '\0'; | |||
182 | *lowp = atoi (range); | |||
183 | *dash = '-'; | |||
184 | } | |||
185 | mask |= RangeLow(1 << 0); | |||
186 | dash++; | |||
187 | if (*dash) { /* [low]-high */ | |||
188 | *highp = atoi (dash); | |||
189 | mask |= RangeHigh(1 << 1); | |||
190 | } | |||
191 | } else { /* number (low == high) */ | |||
192 | *lowp = *highp = atoi (range); | |||
193 | mask |= (RangeLow(1 << 0) | RangeHigh(1 << 1)); | |||
194 | } | |||
195 | ||||
196 | return mask; | |||
197 | } | |||
198 | ||||
199 | static void | |||
200 | do_range(xcb_connection_t *c, const char *format, char *range) | |||
201 | { | |||
202 | int mask; | |||
203 | long low, high; | |||
204 | ||||
205 | mask = parse_range (range, &low, &high); | |||
206 | list_atoms (c, format, mask, low, high); | |||
| ||||
207 | } | |||
208 | ||||
209 | static int | |||
210 | say_batch(xcb_connection_t *c, const char *format, xcb_get_atom_name_cookie_t *cookie, long low, long count) | |||
211 | { | |||
212 | xcb_generic_error_t *e; | |||
213 | char atom_name[1024]; | |||
214 | long i; | |||
215 | int done = 0; | |||
216 | ||||
217 | for (i = 0; i < count; i++) | |||
218 | cookie[i] = xcb_get_atom_name(c, i + low); | |||
219 | ||||
220 | for (i = 0; i < count; i++) { | |||
221 | xcb_get_atom_name_reply_t *r; | |||
222 | r = xcb_get_atom_name_reply(c, cookie[i], &e); | |||
223 | if (r) { | |||
224 | /* We could just use %.*s in 'format', but we want to be compatible | |||
225 | with legacy command line usage */ | |||
226 | snprintf(atom_name, sizeof(atom_name), "%.*s",__builtin___snprintf_chk (atom_name, sizeof(atom_name), 0, __builtin_object_size (atom_name, 2 > 1 ? 1 : 0), "%.*s", r->name_len, xcb_get_atom_name_name (r)) | |||
227 | r->name_len, xcb_get_atom_name_name(r))__builtin___snprintf_chk (atom_name, sizeof(atom_name), 0, __builtin_object_size (atom_name, 2 > 1 ? 1 : 0), "%.*s", r->name_len, xcb_get_atom_name_name (r)); | |||
228 | ||||
229 | printf (format, i + low, atom_name); | |||
230 | putchar ('\n'); | |||
231 | free(r); | |||
232 | } | |||
233 | if (e) { | |||
234 | done = 1; | |||
235 | free(e); | |||
236 | } | |||
237 | } | |||
238 | ||||
239 | return done; | |||
240 | } | |||
241 | ||||
242 | static void | |||
243 | list_atoms(xcb_connection_t *c, const char *format, int mask, long low, long high) | |||
244 | { | |||
245 | xcb_get_atom_name_cookie_t *cookie_jar; | |||
246 | int done = 0; | |||
247 | ||||
248 | switch (mask) { | |||
249 | case RangeHigh(1 << 1): | |||
250 | low = 1; | |||
251 | /* fall through */ | |||
252 | case (RangeLow(1 << 0) | RangeHigh(1 << 1)): | |||
253 | cookie_jar = malloc((high - low + 1) * sizeof(xcb_get_atom_name_cookie_t)); | |||
254 | if (!cookie_jar) { | |||
255 | fprintf(stderr__stderrp, "Out of memory allocating space for %ld atom requests\n", high - low); | |||
256 | return; | |||
257 | } | |||
258 | ||||
259 | say_batch(c, format, cookie_jar, low, high - low + 1); | |||
260 | free(cookie_jar); | |||
261 | break; | |||
262 | ||||
263 | default: | |||
264 | low = 1; | |||
265 | /* fall through */ | |||
266 | case RangeLow(1 << 0): | |||
267 | cookie_jar = malloc(ATOMS_PER_BATCH100 * sizeof(xcb_get_atom_name_cookie_t)); | |||
268 | if (!cookie_jar) { | |||
269 | fprintf(stderr__stderrp, "Out of memory allocating space for %ld atom requests\n", (long) ATOMS_PER_BATCH100); | |||
270 | return; | |||
271 | } | |||
272 | while (!done) { | |||
273 | done = say_batch(c, format, cookie_jar, low, ATOMS_PER_BATCH100); | |||
274 | low += ATOMS_PER_BATCH100; | |||
275 | } | |||
276 | free(cookie_jar); | |||
277 | break; | |||
278 | } | |||
279 | ||||
280 | return; | |||
281 | } |