archive release

util.c

@@ -0,0 +1,135 @@
+/*
+ *
+ * Copyright (c) 2004 Marius Aamodt Eriksen <marius@monkey.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ * $OpenBSD$
+ */
+
+#include <sys/types.h>
+#include "queue.h"
+
+#include <err.h>
+#include <errno.h>
+#include <limits.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "samu.h"
+
+static void	 log_msg(const char *, va_list);
+
+void
+u_spawn(char *argstr)
+{
+	switch (fork()) {
+	case 0:
+		u_exec(argstr);
+		exit(1);
+	case -1:
+		warn("fork");
+	default:
+		break;
+	}
+}
+
+void
+u_exec(char *argstr)
+{
+#define MAXARGLEN 20
+	char	*args[MAXARGLEN], **ap = args;
+	char	**end = &args[MAXARGLEN - 2], *tmp;
+	char	*s = argstr;
+
+	while (ap < end && (*ap = strsep(&argstr, " \t")) != NULL) {
+		if (**ap == '\0')
+			continue;
+		ap++;
+		if (argstr != NULL) {
+			/* deal with quoted strings */
+			switch(argstr[0]) {
+			case '"':
+			case '\'':
+				if ((tmp = strchr(argstr + 1, argstr[0]))
+				    != NULL) {
+					*(tmp++) = '\0';
+					*(ap++) = ++argstr;
+					argstr = tmp;
+				}
+				break;
+			default:
+				break;
+			}
+		}
+	}
+	*ap = NULL;
+
+	(void)setsid();
+	(void)execvp(args[0], args);
+	warn("%s", s);
+}
+
+char *
+u_argv(char * const *argv)
+{
+	size_t	 siz = 0;
+	int	 i;
+	char	*p;
+
+	if (argv == 0)
+		return NULL;
+
+	for (i = 0; argv[i]; i++)
+		siz += strlen(argv[i]) + 1;
+	if (siz == 0)
+		return NULL;
+
+	p = xmalloc(siz);
+	strlcpy(p, argv[0], siz);
+	return p;
+}
+
+static void
+log_msg(const char *msg, va_list ap)
+{
+	char	*fmt;
+
+	if (asprintf(&fmt, "%s\n", msg) == -1) {
+		vfprintf(stderr, msg, ap);
+		fprintf(stderr, "\n");
+	} else {
+		vfprintf(stderr, fmt, ap);
+		free(fmt);
+	}
+	fflush(stderr);
+}
+
+void
+log_debug(int level, const char *func, const char *msg, ...)
+{
+	char	*fmt;
+	va_list	 ap;
+
+	if (Conf.debug < level)
+		return;
+
+	va_start(ap, msg);
+	xasprintf(&fmt, "debug%d: %s: %s", level, func, msg);
+	log_msg(fmt, ap);
+	free(fmt);
+	va_end(ap);
+}