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-rw-r--r--TODO5
-rw-r--r--client/client.c252
-rw-r--r--client/client.h4
-rw-r--r--client/util.c4
4 files changed, 247 insertions, 18 deletions
diff --git a/TODO b/TODO
index b9ba13f..7fa275e 100644
--- a/TODO
+++ b/TODO
@@ -46,7 +46,10 @@ Roadmap
Client
~~~~~~
-- write it!
+- command completion
+- online help
+- builtin command and aliases
+- access control
Documentation
~~~~~~~~~~~~~
diff --git a/client/client.c b/client/client.c
index 260e043..50335e4 100644
--- a/client/client.c
+++ b/client/client.c
@@ -9,7 +9,13 @@
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
+#include <fcntl.h>
#include <unistd.h>
+#include <errno.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+#include <sys/time.h>
+#include <sys/types.h>
#include <readline/readline.h>
#include <readline/history.h>
@@ -17,12 +23,25 @@
#include "lib/resource.h"
#include "client/client.h"
-static char *opt_list = "";
+static char *opt_list = "s:v";
+static int verbose;
+
+static char *server_path = PATH_CONTROL_SOCKET_DIR "/bird.ctl";
+static int server_fd;
+static int server_reply;
+static byte server_read_buf[4096];
+static byte *server_read_pos = server_read_buf;
+
+static int input_initialized;
+static int input_hidden;
+static int input_hidden_end;
+
+/*** Parsing of arguments ***/
static void
usage(void)
{
- fprintf(stderr, "Usage: birdc\n");
+ fprintf(stderr, "Usage: birdc [-s <control-socket>] [-v]\n");
exit(1);
}
@@ -34,6 +53,12 @@ parse_args(int argc, char **argv)
while ((c = getopt(argc, argv, opt_list)) >= 0)
switch (c)
{
+ case 's':
+ server_path = optarg;
+ break;
+ case 'v':
+ verbose++;
+ break;
default:
usage();
}
@@ -41,19 +66,211 @@ parse_args(int argc, char **argv)
usage();
}
-static char *
-get_command(void)
-{
- static char *cmd_buffer;
+/*** Input ***/
+
+static void server_send(char *);
+static void io_loop(int);
- if (cmd_buffer)
- free(cmd_buffer);
- cmd_buffer = readline("bird> ");
+static void
+got_line(char *cmd_buffer)
+{
if (!cmd_buffer)
- exit(0);
+ {
+ cleanup();
+ exit(0);
+ }
if (cmd_buffer[0])
- add_history(cmd_buffer);
- return cmd_buffer;
+ {
+ add_history(cmd_buffer);
+ /* FIXME: Builtin commands: exit, ... */
+ server_send(cmd_buffer);
+ input_hidden = -1;
+ io_loop(0);
+ input_hidden = 0;
+ }
+ free(cmd_buffer);
+}
+
+static void
+input_init(void)
+{
+ rl_readline_name = "birdc";
+ rl_callback_handler_install("bird> ", got_line);
+ input_initialized = 1;
+ if (fcntl(0, F_SETFL, O_NONBLOCK) < 0)
+ die("fcntl: %m");
+}
+
+static void
+input_hide(void)
+{
+ if (input_hidden)
+ return;
+ if (rl_line_buffer)
+ {
+ input_hidden_end = rl_end;
+ rl_end = 0;
+ rl_expand_prompt("");
+ rl_redisplay();
+ input_hidden = 1;
+ }
+}
+
+static void
+input_reveal(void)
+{
+ if (input_hidden <= 0)
+ return;
+ rl_end = input_hidden_end;
+ rl_expand_prompt("bird> ");
+ rl_forced_update_display();
+ input_hidden = 0;
+}
+
+void
+cleanup(void)
+{
+ if (input_initialized)
+ {
+ input_initialized = 0;
+ input_hide();
+ rl_callback_handler_remove();
+ }
+}
+
+/*** Communication with server ***/
+
+static void
+server_connect(void)
+{
+ struct sockaddr_un sa;
+
+ server_fd = socket(AF_UNIX, SOCK_STREAM, 0);
+ if (server_fd < 0)
+ die("Cannot create socket: %m");
+ bzero(&sa, sizeof(sa));
+ sa.sun_family = AF_UNIX;
+ strcpy(sa.sun_path, server_path);
+ if (connect(server_fd, (struct sockaddr *) &sa, sizeof(struct sockaddr)) < 0)
+ die("Unable to connect to server control socket (%s): %m", server_path);
+ if (fcntl(server_fd, F_SETFL, O_NONBLOCK) < 0)
+ die("fcntl: %m");
+}
+
+static void
+server_got_reply(char *x)
+{
+ int code;
+
+ input_hide();
+ if (*x == '+') /* Async reply */
+ printf(">>> %s\n", x+1);
+ else if (x[0] == ' ') /* Continuation */
+ printf("%s%s\n", x+1, verbose ? " " : "");
+ else if (strlen(x) > 4 &&
+ sscanf(x, "%d", &code) == 1 && code >= 0 && code < 10000 &&
+ (x[4] == ' ' || x[4] == '-'))
+ {
+ if (code)
+ printf("%s\n", verbose ? x : x+5);
+ if (x[4] == ' ')
+ server_reply = code;
+ }
+ else
+ printf("??? <%s>\n", x);
+}
+
+static void
+server_read(void)
+{
+ int c;
+ byte *start, *p;
+
+ c = read(server_fd, server_read_pos, server_read_buf + sizeof(server_read_buf) - server_read_pos);
+ if (!c)
+ die("Connection closed by server.");
+ if (c < 0)
+ die("Server read error: %m");
+ start = server_read_buf;
+ p = server_read_pos;
+ server_read_pos += c;
+ while (p < server_read_pos)
+ if (*p++ == '\n')
+ {
+ p[-1] = 0;
+ server_got_reply(start);
+ start = p;
+ }
+ if (start != server_read_buf)
+ {
+ int l = server_read_pos - start;
+ memmove(server_read_buf, start, l);
+ server_read_pos = server_read_buf + l;
+ }
+ else if (server_read_pos == server_read_buf + sizeof(server_read_buf))
+ {
+ strcpy(server_read_buf, "?<too-long>");
+ server_read_pos = server_read_buf + 11;
+ }
+}
+
+static fd_set select_fds;
+
+static void
+io_loop(int mode)
+{
+ server_reply = -1;
+ while (mode || server_reply < 0)
+ {
+ FD_SET(server_fd, &select_fds);
+ if (mode)
+ FD_SET(0, &select_fds);
+ select(server_fd+1, &select_fds, NULL, NULL, NULL);
+ if (FD_ISSET(server_fd, &select_fds))
+ {
+ server_read();
+ if (mode)
+ input_reveal();
+ }
+ if (FD_ISSET(0, &select_fds))
+ rl_callback_read_char();
+ }
+ input_reveal();
+}
+
+static void
+server_send(char *cmd)
+{
+ int l = strlen(cmd);
+ byte *z = alloca(l + 1);
+
+ memcpy(z, cmd, l);
+ z[l++] = '\n';
+ while (l)
+ {
+ int cnt = write(server_fd, z, l);
+ if (cnt < 0)
+ {
+ if (errno == -EAGAIN)
+ {
+ fd_set set;
+ FD_ZERO(&set);
+ do
+ {
+ FD_SET(server_fd, &set);
+ select(server_fd+1, NULL, &set, NULL, NULL);
+ }
+ while (!FD_ISSET(server_fd, &set));
+ }
+ else
+ die("Server write error: %m");
+ }
+ else
+ {
+ l -= cnt;
+ z += cnt;
+ }
+ }
}
int
@@ -65,10 +282,11 @@ main(int argc, char **argv)
#endif
parse_args(argc, argv);
+ server_connect();
+ io_loop(0);
- for(;;)
- {
- char *c = get_command();
- puts(c);
- }
+ input_init();
+
+ io_loop(1);
+ return 0;
}
diff --git a/client/client.h b/client/client.h
index 2e1e050..f0edeeb 100644
--- a/client/client.h
+++ b/client/client.h
@@ -5,3 +5,7 @@
*
* Can be freely distributed and used under the terms of the GNU GPL.
*/
+
+/* client.c */
+
+void cleanup(void);
diff --git a/client/util.c b/client/util.c
index 65a1fb2..7699faf 100644
--- a/client/util.c
+++ b/client/util.c
@@ -16,12 +16,15 @@
/* Client versions of logging functions */
+/* FIXME: Use bsprintf, so that %m works */
+
void
bug(char *msg, ...)
{
va_list args;
va_start(args, msg);
+ cleanup();
fputs("Internal error: ", stderr);
vfprintf(stderr, msg, args);
fputc('\n', stderr);
@@ -34,6 +37,7 @@ die(char *msg, ...)
va_list args;
va_start(args, msg);
+ cleanup();
vfprintf(stderr, msg, args);
fputc('\n', stderr);
exit(1);
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-11 01:59:42 +0100