#define HANDSHAKE_BUFSIZE 4096
+static int parse_sb_command(struct command_context *cc, struct iovec *iov)
+{
+ int ret, i;
+ char *p, *end;
+
+ ret = -E_BAD_CMD;
+ if (iov->iov_base == NULL || iov->iov_len == 0)
+ goto out;
+ 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);
+ if (ret < 0)
+ goto out;
+ end = iov->iov_base + iov->iov_len;
+ for (i = 0, p = iov->iov_base; p < end; i++)
+ p += strlen(p) + 1;
+ cc->argc = i;
+ cc->argv = para_malloc((cc->argc + 1) * sizeof(char *));
+ for (i = 0, p = iov->iov_base; p < end; i++) {
+ cc->argv[i] = para_strdup(p);
+ p += strlen(p) + 1;
+ }
+ cc->argv[cc->argc] = NULL;
+ ret = cc->argc;
+out:
+ free(iov->iov_base);
+ return ret;
+}
+
/**
* Perform user authentication and execute a command.
*
ret = sc_send_buffer(&cc->scc, PROCEED_MSG);
if (ret < 0)
goto net_err;
- ret = read_command(&cc->scc, &command);
- if (ret == -E_COMMAND_SYNTAX)
- goto err_out;
- if (ret < 0)
- goto net_err;
- ret = -E_BAD_CMD;
- cc->cmd = parse_cmd(command);
- if (!cc->cmd)
- goto err_out;
- /* valid command, check permissions */
- ret = check_perms(cc->u->perms, cc->cmd);
- if (ret < 0)
- goto err_out;
- /* valid command and sufficient perms */
- ret = create_argv(command, "\n", &cc->argv);
- if (ret < 0)
- goto err_out;
- cc->argc = ret;
+ if (cc->use_sideband) {
+ struct iovec iov;
+ ret = recv_sb(&cc->scc, SBD_COMMAND, MAX_COMMAND_LEN, &iov);
+ if (ret < 0)
+ goto net_err;
+ ret = parse_sb_command(cc, &iov);
+ if (ret < 0)
+ goto err_out;
+ cc->argc = ret;
+ } else {
+ ret = read_command(&cc->scc, &command);
+ if (ret == -E_COMMAND_SYNTAX)
+ goto err_out;
+ if (ret < 0)
+ goto net_err;
+ ret = -E_BAD_CMD;
+ cc->cmd = parse_cmd(command);
+ if (!cc->cmd)
+ goto err_out;
+ /* valid command, check permissions */
+ ret = check_perms(cc->u->perms, cc->cmd);
+ if (ret < 0)
+ goto err_out;
+ /* valid command and sufficient perms */
+ ret = create_argv(command, "\n", &cc->argv);
+ 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);