1 files changed, 130 insertions, 0 deletions
diff --git a/lib/dpkg/log.c b/lib/dpkg/log.c
new file mode 100644
index 0000000..7c12de1
--- /dev/null
+++ b/lib/dpkg/log.c
@@ -0,0 +1,130 @@
+/*
+ * libdpkg - Debian packaging suite library routines
+ * log.c - logging related functions
+ *
+ * Copyright © 2005 Scott James Remnant <scott@netsplit.com>
+ *
+ * This 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 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <config.h>
+#include <compat.h>
+
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include <errno.h>
+#include <time.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <stdarg.h>
+
+#include <dpkg/i18n.h>
+#include <dpkg/dpkg.h>
+#include <dpkg/dpkg-db.h>
+#include <dpkg/fdio.h>
+
+const char *log_file = NULL;
+
+void
+log_message(const char *fmt, ...)
+{
+	static struct varbuf log;
+	static int logfd = -1;
+	char time_str[20];
+	time_t now;
+	struct tm tm;
+	va_list args;
+
+	if (!log_file)
+		return;
+
+	if (logfd < 0) {
+		logfd = open(log_file, O_WRONLY | O_CREAT | O_APPEND, 0644);
+		if (logfd < 0) {
+			notice(_("could not open log '%s': %s"),
+			       log_file, strerror(errno));
+			log_file = NULL;
+			return;
+		}
+		setcloexec(logfd, log_file);
+	}
+
+	time(&now);
+	if (localtime_r(&now, &tm) == NULL) {
+		notice(_("cannot get local time to log into '%s': %s"),
+		       log_file, strerror(errno));
+		return;
+	}
+	strftime(time_str, sizeof(time_str), "%Y-%m-%d %H:%M:%S", &tm);
+
+	va_start(args, fmt);
+	varbuf_reset(&log);
+	varbuf_add_str(&log, time_str);
+	varbuf_add_char(&log, ' ');
+	varbuf_vprintf(&log, fmt, args);
+	varbuf_add_char(&log, '\n');
+	varbuf_end_str(&log);
+	va_end(args);
+
+	if (fd_write(logfd, log.buf, log.used) < 0)
+		notice(_("cannot write to log file '%s': %s"),
+		       log_file, strerror(errno));
+}
+
+struct pipef {
+	struct pipef *next;
+	int fd;
+};
+
+static struct pipef *status_pipes = NULL;
+
+void
+statusfd_add(int fd)
+{
+	struct pipef *pipe_new;
+
+	setcloexec(fd, _("<package status and progress file descriptor>"));
+
+	pipe_new = nfmalloc(sizeof(*pipe_new));
+	pipe_new->fd = fd;
+	pipe_new->next = status_pipes;
+	status_pipes = pipe_new;
+}
+
+void
+statusfd_send(const char *fmt, ...)
+{
+	static struct varbuf vb;
+	struct pipef *pipef;
+	va_list args;
+
+	if (!status_pipes)
+		return;
+
+	va_start(args, fmt);
+	varbuf_reset(&vb);
+	varbuf_vprintf(&vb, fmt, args);
+	/* Sanitize string to not include new lines, as front-ends should be
+	 * doing their own word-wrapping. */
+	varbuf_map_char(&vb, '\n', ' ');
+	varbuf_add_char(&vb, '\n');
+	va_end(args);
+
+	for (pipef = status_pipes; pipef; pipef = pipef->next) {
+		if (fd_write(pipef->fd, vb.buf, vb.used) < 0)
+			ohshite(_("unable to write to status fd %d"),
+			        pipef->fd);
+	}
+}