summaryrefslogtreecommitdiffstats
path: root/openbsd-compat/setproctitle.c
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--openbsd-compat/setproctitle.c170
1 files changed, 170 insertions, 0 deletions
diff --git a/openbsd-compat/setproctitle.c b/openbsd-compat/setproctitle.c
new file mode 100644
index 0000000..e406432
--- /dev/null
+++ b/openbsd-compat/setproctitle.c
@@ -0,0 +1,170 @@
+/* Based on conf.c from UCB sendmail 8.8.8 */
+
+/*
+ * Copyright 2003 Damien Miller
+ * Copyright (c) 1983, 1995-1997 Eric P. Allman
+ * Copyright (c) 1988, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include "includes.h"
+
+#ifndef HAVE_SETPROCTITLE
+
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#ifdef HAVE_SYS_PSTAT_H
+#include <sys/pstat.h>
+#endif
+#include <string.h>
+
+#include <vis.h>
+
+#define SPT_NONE 0 /* don't use it at all */
+#define SPT_PSTAT 1 /* use pstat(PSTAT_SETCMD, ...) */
+#define SPT_REUSEARGV 2 /* cover argv with title information */
+
+#ifndef SPT_TYPE
+# define SPT_TYPE SPT_NONE
+#endif
+
+#ifndef SPT_PADCHAR
+# define SPT_PADCHAR '\0'
+#endif
+
+#if SPT_TYPE == SPT_REUSEARGV
+static char *argv_start = NULL;
+static size_t argv_env_len = 0;
+#endif
+
+#endif /* HAVE_SETPROCTITLE */
+
+void
+compat_init_setproctitle(int argc, char *argv[])
+{
+#if !defined(HAVE_SETPROCTITLE) && \
+ defined(SPT_TYPE) && SPT_TYPE == SPT_REUSEARGV
+ extern char **environ;
+ char *lastargv = NULL;
+ char **envp = environ;
+ int i;
+
+ /*
+ * NB: This assumes that argv has already been copied out of the
+ * way. This is true for sshd, but may not be true for other
+ * programs. Beware.
+ */
+
+ if (argc == 0 || argv[0] == NULL)
+ return;
+
+ /* Fail if we can't allocate room for the new environment */
+ for (i = 0; envp[i] != NULL; i++)
+ ;
+ if ((environ = calloc(i + 1, sizeof(*environ))) == NULL) {
+ environ = envp; /* put it back */
+ return;
+ }
+
+ /*
+ * Find the last argv string or environment variable within
+ * our process memory area.
+ */
+ for (i = 0; i < argc; i++) {
+ if (lastargv == NULL || lastargv + 1 == argv[i])
+ lastargv = argv[i] + strlen(argv[i]);
+ }
+ for (i = 0; envp[i] != NULL; i++) {
+ if (lastargv + 1 == envp[i])
+ lastargv = envp[i] + strlen(envp[i]);
+ }
+
+ argv[1] = NULL;
+ argv_start = argv[0];
+ argv_env_len = lastargv - argv[0] - 1;
+
+ /*
+ * Copy environment
+ * XXX - will truncate env on strdup fail
+ */
+ for (i = 0; envp[i] != NULL; i++)
+ environ[i] = strdup(envp[i]);
+ environ[i] = NULL;
+#endif /* SPT_REUSEARGV */
+}
+
+#ifndef HAVE_SETPROCTITLE
+void
+setproctitle(const char *fmt, ...)
+{
+#if SPT_TYPE != SPT_NONE
+ va_list ap;
+ char buf[1024], ptitle[1024];
+ size_t len = 0;
+ int r;
+ extern char *__progname;
+#if SPT_TYPE == SPT_PSTAT
+ union pstun pst;
+#endif
+
+#if SPT_TYPE == SPT_REUSEARGV
+ if (argv_env_len <= 0)
+ return;
+#endif
+
+ strlcpy(buf, __progname, sizeof(buf));
+
+ r = -1;
+ va_start(ap, fmt);
+ if (fmt != NULL) {
+ len = strlcat(buf, ": ", sizeof(buf));
+ if (len < sizeof(buf))
+ r = vsnprintf(buf + len, sizeof(buf) - len , fmt, ap);
+ }
+ va_end(ap);
+ if (r == -1 || (size_t)r >= sizeof(buf) - len)
+ return;
+ strnvis(ptitle, buf, sizeof(ptitle),
+ VIS_CSTYLE|VIS_NL|VIS_TAB|VIS_OCTAL);
+
+#if SPT_TYPE == SPT_PSTAT
+ pst.pst_command = ptitle;
+ pstat(PSTAT_SETCMD, pst, strlen(ptitle), 0, 0);
+#elif SPT_TYPE == SPT_REUSEARGV
+/* debug("setproctitle: copy \"%s\" into len %d",
+ buf, argv_env_len); */
+ len = strlcpy(argv_start, ptitle, argv_env_len);
+ for(; len < argv_env_len; len++)
+ argv_start[len] = SPT_PADCHAR;
+#endif
+
+#endif /* SPT_NONE */
+}
+
+#endif /* HAVE_SETPROCTITLE */