1 files changed, 105 insertions, 0 deletions
diff --git a/form_login.c b/form_login.c
new file mode 100644
index 0000000..9309c78
--- /dev/null
+++ b/form_login.c
@@ -0,0 +1,105 @@
+#define _POSIX_C_SOURCE 200809L
+
+#include "form.h"
+#include <libweb/html.h>
+#include <stdio.h>
+
+static int anonymous(struct html_node *const n)
+{
+    struct html_node *div, *form, *luser, *iuser, *lpass, *ipass, *submit,
+        *signup;
+
+    if (!(div = html_node_add_child(n, "div"))
+        || !(form = html_node_add_child(div, "form"))
+        || !(luser = html_node_add_child(form, "label"))
+        || !(iuser = html_node_add_child(form, "input"))
+        || !(lpass = html_node_add_child(form, "label"))
+        || !(ipass = html_node_add_child(form, "input"))
+        || !(submit = html_node_add_child(form, "input"))
+        || !(signup = html_node_add_child(div, "a")))
+    {
+        fprintf(stderr, "%s: html_node_add_child failed\n", __func__);
+        return -1;
+    }
+    else if (html_node_add_attr(form, "action", "/login")
+        || html_node_add_attr(form, "form", "loginform")
+        || html_node_add_attr(form, "method", "post")
+        || html_node_add_attr(luser, "for", "username")
+        || html_node_add_attr(lpass, "for", "password")
+        || html_node_add_attr(iuser, "type", "text")
+        || html_node_add_attr(iuser, "id", "username")
+        || html_node_add_attr(iuser, "name", "username")
+        || html_node_add_attr(ipass, "type", "password")
+        || html_node_add_attr(ipass, "id", "password")
+        || html_node_add_attr(ipass, "name", "password")
+        || html_node_add_attr(submit, "type", "submit")
+        || html_node_add_attr(submit, "value", "Log in")
+        || html_node_add_attr(signup, "href", "/signup"))
+    {
+        fprintf(stderr, "%s: html_node_add_attr failed\n", __func__);
+        return -1;
+    }
+    else if (html_node_set_value(luser, "Username:")
+        || html_node_set_value(lpass, "Password:")
+        || html_node_set_value(signup, "Sign up"))
+    {
+        fprintf(stderr, "%s: html_node_set_value failed\n", __func__);
+        return -1;
+    }
+
+    return 0;
+}
+
+static int loggedin(struct html_node *const n, const char *const username)
+{
+    int ret = -1;
+    struct html_node *div, *p, *form, *submit, *a;
+    struct dynstr d;
+
+    dynstr_init(&d);
+
+    if (!(div = html_node_add_child(n, "div"))
+        || !(p = html_node_add_child(div, "p"))
+        || !(form = html_node_add_child(div, "form"))
+        || !(submit = html_node_add_child(form, "input"))
+        || !(a = html_node_add_child(div, "a")))
+    {
+        fprintf(stderr, "%s: html_node_add_child failed\n", __func__);
+        goto end;
+    }
+    else if (dynstr_append(&d, "Logged in as %s", username))
+    {
+        fprintf(stderr, "%s: dynstr_append failed\n", __func__);
+        goto end;
+    }
+    else if (html_node_set_value(p, d.str)
+        || html_node_set_value(a, "User control panel"))
+    {
+        fprintf(stderr, "%s: html_node_set_value failed\n", __func__);
+        goto end;
+    }
+    else if (html_node_add_attr(form, "action", "/logout")
+        || html_node_add_attr(form, "form", "logoutform")
+        || html_node_add_attr(form, "method", "post")
+        || html_node_add_attr(submit, "type", "submit")
+        || html_node_add_attr(submit, "value", "Logout")
+        || html_node_add_attr(a, "href", "/ucp"))
+    {
+        fprintf(stderr, "%s: html_node_add_attr failed\n", __func__);
+        goto end;
+    }
+
+    ret = 0;
+
+end:
+    dynstr_free(&d);
+    return ret;
+}
+
+int form_login(struct html_node *const n, const char *const username)
+{
+    if (!username)
+        return anonymous(n);
+
+    return loggedin(n, username);
+}