connect: reject paths that look like command line options

diff --git a/connect.c b/connect.c
index fd7ffe1840e64417cf94d208840cf97c91e962b7..d77d39771b6c5101abe14df1e078af2a02ce8ace 100644 (file)
--- a/connect.c
+++ b/connect.c
@@ -553,6 +553,11 @@ static struct child_process *git_proxy_connect(int fd[2], char *host)
 
        get_host_and_port(&host, &port);
 
+       if (looks_like_command_line_option(host))
+               die("strange hostname '%s' blocked", host);
+       if (looks_like_command_line_option(port))
+               die("strange port '%s' blocked", port);
+
        proxy = xmalloc(sizeof(*proxy));
        child_process_init(proxy);
        argv_array_push(&proxy->args, git_proxy_command);
@@ -722,6 +727,9 @@ struct child_process *git_connect(int fd[2], const char *url,
                conn = xmalloc(sizeof(*conn));
                child_process_init(conn);
 
+               if (looks_like_command_line_option(path))
+                       die("strange pathname '%s' blocked", path);
+
                strbuf_addstr(&cmd, prog);
                strbuf_addch(&cmd, ' ');
                sq_quote_buf(&cmd, path);
@@ -754,6 +762,9 @@ struct child_process *git_connect(int fd[2], const char *url,
                                return NULL;
                        }
 
+                       if (looks_like_command_line_option(ssh_host))
+                               die("strange hostname '%s' blocked", ssh_host);
+
                        ssh = getenv("GIT_SSH_COMMAND");
                        if (!ssh) {
                                const char *base;