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-rw-r--r--src/pmpost/GNUmakefile31
-rw-r--r--src/pmpost/pmpost.c219
2 files changed, 250 insertions, 0 deletions
diff --git a/src/pmpost/GNUmakefile b/src/pmpost/GNUmakefile
new file mode 100644
index 0000000..c39a96c
--- /dev/null
+++ b/src/pmpost/GNUmakefile
@@ -0,0 +1,31 @@
+#
+# Copyright (c) 2000,2004 Silicon Graphics, Inc. All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License as published by the
+# Free Software Foundation; either version 2 of the License, or (at your
+# option) any later version.
+#
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+# or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+# for more details.
+#
+
+TOPDIR = ../..
+include $(TOPDIR)/src/include/builddefs
+
+CFILES = pmpost.c
+CMDTARGET = pmpost$(EXECSUFFIX)
+LLDLIBS = $(PCPLIB)
+
+default: $(CMDTARGET)
+
+install: default
+ $(INSTALL) -m 755 -o root $(CMDTARGET) $(PCP_BINADM_DIR)/$(CMDTARGET)
+
+include $(BUILDRULES)
+
+default_pcp: default
+
+install_pcp: install
diff --git a/src/pmpost/pmpost.c b/src/pmpost/pmpost.c
new file mode 100644
index 0000000..2691cc9
--- /dev/null
+++ b/src/pmpost/pmpost.c
@@ -0,0 +1,219 @@
+/*
+ * Copyright (c) 1995-2003 Silicon Graphics, Inc. All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * for more details.
+ */
+
+#include "pmapi.h"
+#include "impl.h"
+#include <sys/stat.h>
+#include <sys/file.h>
+#ifdef HAVE_GRP_H
+#include <grp.h>
+#endif
+
+/*
+ * Attempt to setup the notices file in a way that members of
+ * the (unprivileged) "pcp" group account can write to it.
+ */
+int gid;
+#ifdef HAVE_GETGRNAM
+static void
+setup_group(void)
+{
+ char *name = pmGetConfig("PCP_GROUP");
+ struct group *group;
+
+ if (!name || name[0] == '\0')
+ name = "pcp";
+ group = getgrnam(name);
+ if (group)
+ gid = group->gr_gid;
+}
+#else
+#define setup_group()
+#endif
+
+static int
+mkdir_r(char *path)
+{
+ struct stat sbuf;
+ int sts;
+
+ if (stat(path, &sbuf) < 0) {
+ if (mkdir_r(dirname(strdup(path))) < 0)
+ return -1;
+ sts = mkdir2(path, 0775);
+ if (chown(path, 0, gid) < 0)
+ fprintf(stderr, "pmpost: cannot set dir gid[%d]: %s\n", gid, path);
+ return sts;
+ }
+ else if ((sbuf.st_mode & S_IFDIR) == 0) {
+ fprintf(stderr, "pmpost: \"%s\" is not a directory\n", path);
+ exit(1);
+ }
+ return 0;
+}
+
+#define LAST_UNDEFINED -1
+#define LAST_NEWFILE -2
+
+int
+main(int argc, char **argv)
+{
+ int i;
+ int fd;
+ FILE *np;
+ char *dir;
+ struct stat sbuf;
+ time_t now;
+ int lastday = LAST_UNDEFINED;
+ struct tm *tmp;
+ int sts = 0;
+ char notices[MAXPATHLEN];
+#ifndef IS_MINGW
+ char *ep;
+ struct flock lock;
+ extern char **environ;
+ static char *newenviron[] =
+ { "HOME=/nowhere", "SHELL=/noshell", "PATH=/nowhere", NULL };
+ static char *keepname[] =
+ { "TZ", "PCP_DIR", "PCP_CONF", NULL };
+ char *keepval[] =
+ { NULL, NULL, NULL, NULL };
+
+ /*
+ * Fix for bug #827972, do not trust the environment.
+ * See also below.
+ */
+ for (i = 0; keepname[i] != NULL; i++)
+ keepval[i] = getenv(keepname[i]);
+ environ = newenviron;
+ for (i = 0; keepname[i] != NULL; i++) {
+ if (keepval[i] != NULL) {
+ snprintf(notices, sizeof(notices), "%s=%s", keepname[i], keepval[i]);
+ if ((ep = strdup(notices)) != NULL)
+ putenv(ep);
+ }
+ }
+#endif
+ umask(0002);
+
+ if ((argc == 1) || (argc == 2 && strcmp(argv[1], "-?") == 0)) {
+ fprintf(stderr, "Usage: pmpost message\n");
+ exit(1);
+ }
+
+ snprintf(notices, sizeof(notices), "%s%c" "NOTICES",
+ pmGetConfig("PCP_LOG_DIR"), __pmPathSeparator());
+
+ setup_group();
+ dir = dirname(strdup(notices));
+ if (mkdir_r(dir) < 0) {
+ fprintf(stderr, "pmpost: cannot create directory \"%s\": %s\n",
+ dir, osstrerror());
+ exit(1);
+ }
+
+ if ((fd = open(notices, O_WRONLY|O_APPEND, 0)) < 0) {
+ if ((fd = open(notices, O_WRONLY|O_CREAT|O_APPEND, 0664)) < 0) {
+ fprintf(stderr, "pmpost: cannot create file \"%s\": %s\n",
+ notices, osstrerror());
+ exit(1);
+ } else if ((fchown(fd, 0, gid)) < 0) {
+ fprintf(stderr, "pmpost: cannot set file gid \"%s\": %s\n",
+ notices, osstrerror());
+ }
+ lastday = LAST_NEWFILE;
+ }
+
+#ifndef IS_MINGW
+ /*
+ * drop root privileges for bug #827972
+ */
+ if (setuid(getuid()) < 0)
+ exit(1);
+
+ lock.l_type = F_WRLCK;
+ lock.l_whence = 0;
+ lock.l_start = 0;
+ lock.l_len = 0;
+
+ /*
+ * willing to try for 3 seconds to get the lock ... note fcntl()
+ * does not block, unlike flock()
+ */
+ for (i = 0; i < 3; i++) {
+ if ((sts = fcntl(fd, F_SETLK, &lock)) != -1)
+ break;
+ sleep(1);
+ }
+
+ if (sts == -1) {
+ fprintf(stderr, "pmpost: warning, cannot lock file \"%s\"", notices);
+ if (oserror() != EINTR)
+ fprintf(stderr, ": %s", osstrerror());
+ fputc('\n', stderr);
+ }
+ sts = 0;
+#endif
+
+ /*
+ * have lock, get last modified day unless file just created
+ */
+ if (lastday != LAST_NEWFILE) {
+ if (fstat(fd, &sbuf) < 0)
+ /* should never happen */
+ ;
+ else {
+ tmp = localtime(&sbuf.st_mtime);
+ lastday = tmp->tm_yday;
+ }
+ }
+
+ if ((np = fdopen(fd, "a")) == NULL) {
+ fprintf(stderr, "pmpost: fdopen: %s\n", osstrerror());
+ exit(1);
+ }
+
+ time(&now);
+ tmp = localtime(&now);
+
+ if (lastday != tmp->tm_yday) {
+ if (fprintf(np, "\nDATE: %s", ctime(&now)) < 0)
+ sts = oserror();
+ }
+
+ if (fprintf(np, "%02d:%02d", tmp->tm_hour, tmp->tm_min) < 0)
+ sts = oserror();
+
+ for (i = 1; i < argc; i++) {
+ if (fprintf(np, " %s", argv[i]) < 0)
+ sts = oserror();
+ }
+
+ if (fputc('\n', np) < 0)
+ sts = oserror();
+
+ if (fclose(np) < 0)
+ sts = oserror();
+
+ if (sts < 0) {
+ fprintf(stderr, "pmpost: write failed: %s\n", osstrerror());
+ fprintf(stderr, "Lost message ...");
+ for (i = 1; i < argc; i++) {
+ fprintf(stderr, " %s", argv[i]);
+ }
+ fputc('\n', stderr);
+ }
+
+ exit(0);
+}
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