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authorMartin Mares <mj@ucw.cz>1999-10-29 14:10:10 +0200
committerMartin Mares <mj@ucw.cz>1999-10-29 14:10:10 +0200
commit7d3aab1c1643e8b2bcff7f856e0d4455fa0ba4b4 (patch)
tree8e2e7d110338803c8f81f7deab2ddb03f19d2bce /nest
parentb93abffae4ad5767625b35c9a09513e9d27a5256 (diff)
downloadbird-7d3aab1c1643e8b2bcff7f856e0d4455fa0ba4b4.tar
bird-7d3aab1c1643e8b2bcff7f856e0d4455fa0ba4b4.zip
First steps of the Command Line Interface: I/O routines.
Diffstat (limited to 'nest')
-rw-r--r--nest/Makefile2
-rw-r--r--nest/cli.c144
-rw-r--r--nest/cli.h49
3 files changed, 194 insertions, 1 deletions
diff --git a/nest/Makefile b/nest/Makefile
index d7689e0..5b6b414 100644
--- a/nest/Makefile
+++ b/nest/Makefile
@@ -1,4 +1,4 @@
-source=rt-table.c rt-fib.c rt-attr.c proto.c iface.c rt-dev.c password.c
+source=rt-table.c rt-fib.c rt-attr.c proto.c iface.c rt-dev.c password.c cli.c
root-rel=../
dir-name=nest
diff --git a/nest/cli.c b/nest/cli.c
new file mode 100644
index 0000000..09ebe96
--- /dev/null
+++ b/nest/cli.c
@@ -0,0 +1,144 @@
+/*
+ * BIRD Internet Routing Daemon -- Command-Line Interface
+ *
+ * (c) 1999 Martin Mares <mj@ucw.cz>
+ *
+ * Can be freely distributed and used under the terms of the GNU GPL.
+ */
+
+#include "nest/bird.h"
+#include "lib/string.h"
+#include "nest/cli.h"
+
+pool *cli_pool;
+
+void
+cli_printf(cli *c, int code, char *msg, ...)
+{
+ va_list args;
+ byte buf[1024];
+ int flag = (code < 0) ? '-' : ' ';
+ int size;
+ struct cli_out *o;
+
+ va_start(args, msg);
+ if (code < 0)
+ code = -code;
+ bsprintf(buf, "%04d%c", code, flag);
+ size = bvsnprintf(buf+5, sizeof(buf)-6, msg, args);
+ if (size < 0)
+ size = bsprintf(buf, "9999%c<line overflow>", flag);
+ else
+ size += 5;
+ buf[size++] = '\n';
+ if (!(o = c->tx_write) || o->wpos + size > o->end)
+ {
+ o = mb_alloc(c->pool, sizeof(struct cli_out) + CLI_TX_BUF_SIZE);
+ if (c->tx_write)
+ c->tx_write->next = o;
+ else
+ c->tx_buf = o;
+ o->next = NULL;
+ o->wpos = o->outpos = o->buf;
+ o->end = o->buf + CLI_TX_BUF_SIZE;
+ c->tx_write = o;
+ }
+ memcpy(o->wpos, buf, size);
+ o->wpos += size;
+}
+
+static void
+cli_free_out(cli *c)
+{
+ struct cli_out *o, *p;
+
+ if (o = c->tx_buf)
+ {
+ c->tx_write = o;
+ o->wpos = o->outpos = o->buf;
+ while (p = o->next)
+ {
+ o->next = p->next;
+ mb_free(p);
+ }
+ }
+}
+
+static int
+cli_flush(cli *c)
+{
+ if (cli_write(c))
+ {
+ cli_free_out(c);
+ return 1;
+ }
+ return 0;
+}
+
+static int
+cli_event(void *data)
+{
+ cli *c = data;
+ int err;
+
+ debug("CLI EVENT\n");
+ if (!c->inited)
+ {
+ c->inited = 1;
+ cli_printf(c, 0, "Welcome!");
+ cli_printf(c, 0, "Here");
+ return cli_flush(c);
+ }
+ err = cli_get_command(c);
+ if (!err)
+ return 0;
+ if (err < 0)
+ debug("CLI CMD ERR\n");
+ else
+ debug("CLI CMD %s\n", c->rx_buf);
+ return 1;
+}
+
+cli *
+cli_new(void *priv)
+{
+ pool *p = rp_new(cli_pool, "CLI");
+ cli *c = mb_alloc(p, sizeof(cli));
+
+ c->pool = p;
+ c->priv = priv;
+ c->event = ev_new(p);
+ c->event->hook = cli_event;
+ c->event->data = c;
+ c->tx_buf = c->tx_pos = c->tx_write = NULL;
+ c->inited = 0;
+ cli_kick(c);
+ return c;
+}
+
+void
+cli_kick(cli *c)
+{
+ debug("CLI KICK\n");
+ ev_schedule(c->event);
+}
+
+void
+cli_written(cli *c)
+{
+ debug("CLI WRITTEN\n");
+ cli_free_out(c);
+ cli_kick(c);
+}
+
+void
+cli_free(cli *c)
+{
+ rfree(c->pool);
+}
+
+void
+cli_init(void)
+{
+ cli_pool = rp_new(&root_pool, "CLI");
+}
diff --git a/nest/cli.h b/nest/cli.h
new file mode 100644
index 0000000..69271fe
--- /dev/null
+++ b/nest/cli.h
@@ -0,0 +1,49 @@
+/*
+ * BIRD Internet Routing Daemon -- Command-Line Interface
+ *
+ * (c) 1999 Martin Mares <mj@ucw.cz>
+ *
+ * Can be freely distributed and used under the terms of the GNU GPL.
+ */
+
+#ifndef _BIRD_CLI_H_
+#define _BIRD_CLI_H_
+
+#include "lib/resource.h"
+#include "lib/event.h"
+
+#define CLI_RX_BUF_SIZE 4096
+#define CLI_TX_BUF_SIZE 4096
+
+struct cli_out {
+ struct cli_out *next;
+ byte *wpos, *outpos, *end;
+ byte buf[0];
+};
+
+typedef struct cli {
+ pool *pool;
+ void *priv; /* Private to sysdep layer */
+ int inited;
+ byte rx_buf[CLI_RX_BUF_SIZE];
+ byte *rx_pos, *rx_aux; /* sysdep */
+ struct cli_out *tx_buf, *tx_pos, *tx_write;
+ event *event;
+} cli;
+
+extern pool *cli_pool;
+
+cli *cli_new(void *);
+void cli_init(void);
+void cli_free(cli *);
+void cli_kick(cli *);
+void cli_written(cli *);
+void cli_printf(cli *, int, char *, ...);
+
+/* Function provided by sysdep layer */
+
+int cli_write(cli *);
+void cli_disconnect(cli *);
+int cli_get_command(cli *);
+
+#endif