X-Git-Url: http://git.tuebingen.mpg.de/?p=paraslash.git;a=blobdiff_plain;f=command.c;h=22948dbb3bc06034d384ad5447c780619840fa80;hp=175b496ca799820bc5d891676f71970d31ba7cc9;hb=26dc18b2c1faa0d284b579d6ed3ccf1d479e65d3;hpb=bb3daee7cc11561159f168fe4f5427b53e54917f

diff --git a/command.c b/command.c
index 175b496c..22948dbb 100644
--- a/command.c
+++ b/command.c
@@ -40,6 +40,26 @@
 #include "signal.h"
 #include "version.h"
 
+typedef int server_command_handler_t(struct command_context *);
+static server_command_handler_t SERVER_COMMAND_HANDLERS;
+server_command_handler_t AFS_COMMAND_HANDLERS;
+
+/* Defines one command of para_server. */
+struct server_command {
+	/* The name of the command. */
+	const char *name;
+	/* Pointer to the function that handles the command. */
+	server_command_handler_t *handler;
+	/* The privileges a user must have to execute this command. */
+	unsigned int perms;
+	/* One-line description of the command. */
+	const char *description;
+	/* Summary of the command line options. */
+	const char *usage;
+	/* The long help text. */
+	const char *help;
+};
+
 static struct server_command afs_cmds[] = {DEFINE_AFS_CMD_ARRAY};
 static struct server_command server_cmds[] = {DEFINE_SERVER_CMD_ARRAY};
 
@@ -405,9 +425,10 @@ static int com_version(struct command_context *cc)
 	char *msg;
 	size_t len;
 
-	if (cc->argc != 1)
-		return -E_COMMAND_SYNTAX;
-	len = xasprintf(&msg, "%s", version_text("server"));
+	if (cc->argc > 1 && strcmp(cc->argv[1], "-v") == 0)
+		len = xasprintf(&msg, "%s", version_text("server"));
+	else
+		len = xasprintf(&msg, "%s\n", version_single_line("server"));
 	return send_sb(&cc->scc, msg, len, SBD_OUTPUT, false);
 }
 
@@ -834,22 +855,23 @@ out:
 
 #define HANDSHAKE_BUFSIZE 4096
 
-static int parse_sb_command(struct command_context *cc, struct iovec *iov)
+static int run_command(struct command_context *cc, struct iovec *iov,
+		const char *peername)
 {
 	int ret, i;
 	char *p, *end;
+	struct server_command *cmd;
 
-	ret = -E_BAD_CMD;
 	if (iov->iov_base == NULL || iov->iov_len == 0)
-		goto out;
+		return -E_BAD_CMD;
 	p = iov->iov_base;
 	p[iov->iov_len - 1] = '\0'; /* just to be sure */
-	cc->cmd = get_cmd_ptr(p, NULL);
-	if (!cc->cmd)
-		goto out;
-	ret = check_perms(cc->u->perms, cc->cmd);
+	cmd = get_cmd_ptr(p, NULL);
+	if (!cmd)
+		return -E_BAD_CMD;
+	ret = check_perms(cc->u->perms, cmd);
 	if (ret < 0)
-		goto out;
+		return ret;
 	end = iov->iov_base + iov->iov_len;
 	for (i = 0; p < end; i++)
 		p += strlen(p) + 1;
@@ -860,9 +882,15 @@ static int parse_sb_command(struct command_context *cc, struct iovec *iov)
 		p += strlen(p) + 1;
 	}
 	cc->argv[cc->argc] = NULL;
-	ret = cc->argc;
-out:
-	free(iov->iov_base);
+	PARA_NOTICE_LOG("calling com_%s() for %s@%s\n", cmd->name,
+		cc->u->name, peername);
+	ret = cmd->handler(cc);
+	free_argv(cc->argv);
+	mutex_lock(mmd_mutex);
+	mmd->num_commands++;
+	if (ret >= 0 && (cmd->perms & AFS_WRITE))
+		mmd->events++;
+	mutex_unlock(mmd_mutex);
 	return ret;
 }
 
@@ -983,17 +1011,10 @@ __noreturn void handle_connect(int fd, const char *peername)
 	ret = recv_sb(&cc->scc, SBD_COMMAND, MAX_COMMAND_LEN, &iov);
 	if (ret < 0)
 		goto net_err;
-	ret = parse_sb_command(cc, &iov);
+	ret = run_command(cc, &iov, peername);
+	free(iov.iov_base);
 	if (ret < 0)
 		goto err_out;
-	cc->argc = ret;
-	PARA_NOTICE_LOG("calling com_%s() for %s@%s\n", cc->cmd->name,
-		cc->u->name, peername);
-	ret = cc->cmd->handler(cc);
-	free_argv(cc->argv);
-	mutex_lock(mmd_mutex);
-	mmd->num_commands++;
-	mutex_unlock(mmd_mutex);
 	if (ret >= 0)
 		goto out;
 err_out:
@@ -1005,8 +1026,6 @@ out:
 	free(buf);
 	free(command);
 	mutex_lock(mmd_mutex);
-	if (cc->cmd && (cc->cmd->perms & AFS_WRITE) && ret >= 0)
-		mmd->events++;
 	mmd->active_connections--;
 	mutex_unlock(mmd_mutex);
 	if (ret >= 0) {