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0 /*
1 * calmwm - the calm window manager
2 *
3 * Copyright (c) 2004 Marius Aamodt Eriksen <marius@monkey.org>
4 *
5 * Permission to use, copy, modify, and distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
8 *
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16 *
17 * $OpenBSD$
18 */
19
20 #include <sys/types.h>
21 #include <sys/queue.h>
22
23 #include <err.h>
24 #include <errno.h>
25 #include <limits.h>
26 #include <stdarg.h>
27 #include <stdio.h>
28 #include <stdlib.h>
29 #include <string.h>
30 #include <unistd.h>
31
32 #include "calmwm.h"
33
34 static void log_msg(const char *, va_list);
35
36 void
37 u_spawn(char *argstr)
38 {
39 switch (fork()) {
40 case 0:
41 u_exec(argstr);
42 exit(1);
43 case -1:
44 warn("fork");
45 default:
46 break;
47 }
48 }
49
50 void
51 u_exec(char *argstr)
52 {
53 #define MAXARGLEN 20
54 char *args[MAXARGLEN], **ap = args;
55 char **end = &args[MAXARGLEN - 2], *tmp;
56 char *s = argstr;
57
58 while (ap < end && (*ap = strsep(&argstr, " \t")) != NULL) {
59 if (**ap == '\0')
60 continue;
61 ap++;
62 if (argstr != NULL) {
63 /* deal with quoted strings */
64 switch(argstr[0]) {
65 case '"':
66 case '\'':
67 if ((tmp = strchr(argstr + 1, argstr[0]))
68 != NULL) {
69 *(tmp++) = '\0';
70 *(ap++) = ++argstr;
71 argstr = tmp;
72 }
73 break;
74 default:
75 break;
76 }
77 }
78 }
79 *ap = NULL;
80
81 (void)setsid();
82 (void)execvp(args[0], args);
83 warn("%s", s);
84 }
85
86 char *
87 u_argv(char * const *argv)
88 {
89 size_t siz = 0;
90 int i;
91 char *p;
92
93 if (argv == 0)
94 return NULL;
95
96 for (i = 0; argv[i]; i++)
97 siz += strlen(argv[i]) + 1;
98 if (siz == 0)
99 return NULL;
100
101 p = xmalloc(siz);
102 strlcpy(p, argv[0], siz);
103 for (i = 1; argv[i]; i++) {
104 strlcat(p, " ", siz);
105 strlcat(p, argv[i], siz);
106 }
107 return p;
108 }
109
110 static void
111 log_msg(const char *msg, va_list ap)
112 {
113 char *fmt;
114
115 if (asprintf(&fmt, "%s\n", msg) == -1) {
116 vfprintf(stderr, msg, ap);
117 fprintf(stderr, "\n");
118 } else {
119 vfprintf(stderr, fmt, ap);
120 free(fmt);
121 }
122 fflush(stderr);
123 }
124
125 void
126 log_debug(int level, const char *func, const char *msg, ...)
127 {
128 char *fmt;
129 va_list ap;
130
131 if (Conf.debug < level)
132 return;
133
134 va_start(ap, msg);
135 xasprintf(&fmt, "debug%d: %s: %s", level, func, msg);
136 log_msg(fmt, ap);
137 free(fmt);
138 va_end(ap);
139 }
140