Initial commit

18 files changed, 896 insertions, 0 deletions

diff --git a/src/account.h b/src/account.h
new file mode 100644
index 0000000..049c829
--- /dev/null
+++ b/src/account.h
@@ -0,0 +1,27 @@
+#ifndef __account_H
+#define __account_H
+
+#include <stdbool.h>
+
+struct account {
+    char *id;
+    char *username;
+    char *acct;
+    char *display_name;
+    bool locked;
+    unsigned int follower_count;
+    unsigned int following_count;
+    unsigned int statuses_count;
+    char *note;
+    char *url;
+    char *avatar;
+    char *avatar_static;
+    char *header;
+    char *header_static;
+    struct account *moved;
+    bool bot;
+};
+
+struct account *account_from_json(char *json_data);
+
+#endif
diff --git a/src/auth.c b/src/auth.c
new file mode 100644
index 0000000..b0ba98c
--- /dev/null
+++ b/src/auth.c
@@ -0,0 +1,60 @@
+#define _POSIX_C_SOURCE 200809L
+#include <err.h>
+#include <string.h>
+#include <jansson.h>
+#include "string-util.h"
+#include "auth.h"
+#include "http.h"
+
+#define CLIENT_NAME "ap_client"
+
+char *instance_domain;
+char *auth_token;
+
+static char *protocol = "https://";
+static char *app_register_url = "/api/v1/apps";
+
+int register_app(char *instance)
+{
+    json_t *root;
+    json_error_t error;
+    char *url;
+    char *req_data;
+    char *res_data;
+
+    root = json_pack_ex(&error, 1, "{s:s, s:s, s:s}", "client_name",
+            CLIENT_NAME, "redirect_uris", "urn:ietf:wg:oauth:2.0:oob", "scopes",
+            "read write push");
+
+    if (!root) {
+        fprintf(stderr, "register_app(): json pack error: line %d: %s\n",
+                error.line, error.text);
+        return -1;
+    }
+
+    req_data = json_dumps(root, 0);
+    json_decref(root);
+    if (!req_data) {
+        fprintf(stderr, "register_app(): failed to dump json\n");
+        return -1;
+    }
+
+    size_t s = strlen(protocol) + strlen(instance) + strlen(app_register_url) + 1; 
+    url = malloc(s);
+    if (!url) {
+        err(1, "register_app(): ");
+    }
+
+    sprintf(url, "%s%s%s", protocol, instance, app_register_url);
+    res_data = post_request(url, req_data);
+    if (!res_data) {
+        free(req_data);
+        return -1;
+    }
+
+    printf("res: \n%s\n", res_data);
+
+    free(req_data);
+    free(res_data);
+    return 0;
+}
diff --git a/src/auth.h b/src/auth.h
new file mode 100644
index 0000000..d3e03ec
--- /dev/null
+++ b/src/auth.h
@@ -0,0 +1,10 @@
+#ifndef __AUTH_H
+#define __AUTH_H
+
+extern char *instance_domain;
+extern char *auth_token;
+
+int register_app(char *instance);
+
+#endif
+
diff --git a/src/http.c b/src/http.c
new file mode 100644
index 0000000..35130af
--- /dev/null
+++ b/src/http.c
@@ -0,0 +1,162 @@
+#define _POSIX_C_SOURCE 200809L
+#include <stdlib.h>
+#include <string.h>
+#include <curl/curl.h>
+#include "string-util.h"
+#include "auth.h"
+
+#define BUFFER_SIZE (256 * 1024)
+#define AUTH_HEADER_STR_PREFIX "Authorization: Bearer "
+
+int http_init()
+{
+    return curl_global_init(CURL_GLOBAL_ALL);
+}
+
+void http_cleanup()
+{
+    curl_global_cleanup();
+    return;
+}
+
+struct write_result {
+    char *data;
+    int pos;
+};
+
+static size_t write_response(void *ptr, size_t size, size_t nmemb, void *stream)
+{
+    struct write_result *result = (struct write_result *)stream;
+
+    if (result->pos + size * nmemb >= BUFFER_SIZE - 1) {
+        fprintf(stderr, "error: too small buffer\n");
+        return 0;
+    }
+
+    memcpy(result->data + result->pos, ptr, size * nmemb);
+    result->pos += size * nmemb;
+
+    return size * nmemb;
+}
+
+char *get_request(const char *url)
+{
+    CURL *curl = NULL;
+    CURLcode status;
+    struct curl_slist *headers = NULL;
+    char *data = NULL;
+    long code;
+
+    curl = curl_easy_init();
+    if (!curl)
+        goto error;
+
+    data = malloc(BUFFER_SIZE);
+    if (!data)
+        goto error;
+
+    struct write_result write_result = {.data = data, .pos = 0};
+
+    if (auth_token) {
+        char *auth_header_val = malloc(strlen(AUTH_HEADER_STR_PREFIX) + strlen(auth_token) + 1);
+        strlcpy(auth_header_val, AUTH_HEADER_STR_PREFIX, sizeof(auth_header_val));
+        strlcat(auth_header_val, auth_token, sizeof(auth_header_val));
+        headers = curl_slist_append(headers, auth_header_val);
+    }
+
+    curl_easy_setopt(curl, CURLOPT_URL, url);
+    curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headers);
+    curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, write_response);
+    curl_easy_setopt(curl, CURLOPT_WRITEDATA, &write_result);
+
+    status = curl_easy_perform(curl);
+    if (status != 0) {
+        fprintf(stderr, "get_request(): unable to request data from %s: %s\n", url, curl_easy_strerror(status));
+        goto error;
+    }
+
+    curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &code);
+    if (code != 200) {
+        fprintf(stderr, "error: server responded with code %ld\n", code);
+        goto error;
+    }
+
+    data[write_result.pos] = '\0';
+
+    curl_slist_free_all(headers);
+    curl_easy_cleanup(curl);
+    return data;
+
+error:
+    if (data)
+        free(data);
+    if (headers)
+        curl_slist_free_all(headers);
+    if (curl)
+        curl_easy_cleanup(curl);
+    return NULL;
+}
+
+char *post_request(const char *url, char *post_data)
+{
+    CURL *curl = NULL;
+    CURLcode status;
+    struct curl_slist *headers = NULL;
+    char *data = NULL;
+    long code;
+
+
+    curl = curl_easy_init();
+    if (!curl)
+        goto error;
+
+    data = malloc(BUFFER_SIZE);
+    if (!data)
+        goto error;
+
+    struct write_result write_result = {.data = data, .pos = 0};
+
+    if (auth_token) {
+        char *auth_header_val = malloc(strlen(AUTH_HEADER_STR_PREFIX) + strlen(auth_token) + 1);
+        strlcpy(auth_header_val, AUTH_HEADER_STR_PREFIX, sizeof(auth_header_val));
+        strlcat(auth_header_val, auth_token, sizeof(auth_header_val));
+        headers = curl_slist_append(headers, auth_header_val);
+    }
+    if (post_data) {
+        char *content_type_header_val = "Content-Type: application/json";
+        headers = curl_slist_append(headers, content_type_header_val);
+    }
+
+    curl_easy_setopt(curl, CURLOPT_URL, url);
+    curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headers);
+    curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, write_response);
+    curl_easy_setopt(curl, CURLOPT_WRITEDATA, &write_result);
+    curl_easy_setopt(curl, CURLOPT_POSTFIELDS, post_data);
+
+    status = curl_easy_perform(curl);
+    if (status != 0) {
+        fprintf(stderr, "post_request(): unable to request data from %s: %s\n", url, curl_easy_strerror(status));
+        goto error;
+    }
+
+    curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &code);
+    if (code != 200) {
+        fprintf(stderr, "error: server responded with code %ld\n", code);
+        goto error;
+    }
+
+    data[write_result.pos] = '\0';
+
+    curl_slist_free_all(headers);
+    curl_easy_cleanup(curl);
+    return data;
+
+error:
+    if (data)
+        free(data);
+    if (headers)
+        curl_slist_free_all(headers);
+    if (curl)
+        curl_easy_cleanup(curl);
+    return NULL;
+}
diff --git a/src/http.h b/src/http.h
new file mode 100644
index 0000000..d7ba313
--- /dev/null
+++ b/src/http.h
@@ -0,0 +1,9 @@
+#ifndef __HTTP_H
+#define __HTTP_H
+
+int http_init();
+void http_cleanup();
+char *get_request(const char *url);
+char *post_request(const char *url, char *data);
+
+#endif
diff --git a/src/instance_info.c b/src/instance_info.c
new file mode 100644
index 0000000..6dab351
--- /dev/null
+++ b/src/instance_info.c
@@ -0,0 +1,36 @@
+#define _POSIX_C_SOURCE 200809L
+#include <string.h>
+#include <jansson.h>
+#include "instance_info.h"
+
+struct instance_info *instance_info_from_json(char *json_data)
+{
+    struct instance_info *info;
+    info = malloc(sizeof(struct instance_info));
+
+    json_t *root;
+    json_error_t error;
+
+    root = json_loads(json_data, 0, &error);
+
+    if (!root) {
+        fprintf(stderr, "error: on line %d: %s\n", error.line, error.text);
+        return NULL;
+    }
+
+    if (!json_is_object(root)) {
+        fprintf(stderr, "root is not object");
+        json_decref(root);
+        return NULL;
+    }
+
+    json_t *title = json_object_get(root, "title");
+    if (!json_is_string(title)) {
+        fprintf(stderr, "title is not string");
+        return NULL;
+    }
+    info->title = strdup(json_string_value(title));
+
+    json_decref(root);
+    return info;
+}
diff --git a/src/instance_info.h b/src/instance_info.h
new file mode 100644
index 0000000..72a5bbb
--- /dev/null
+++ b/src/instance_info.h
@@ -0,0 +1,31 @@
+#ifndef __INSTANCE_INFO_H
+#define __INSTANCE_INFO_H
+
+#include <stdbool.h>
+
+struct instance_info_urls {
+    char *streaming_api;
+};
+
+struct instance_info_stats {
+    int user_count;
+    int status_count;
+    int domain_count;
+};
+
+struct instance_info {
+    char *url;
+    char *title;
+    char *description;
+    char *email;
+    char *version;
+    struct instance_info_urls urls;
+    struct instance_info_stats states;
+    char *thumbnail;
+    char **languages;
+    bool registrations;
+};
+
+struct instance_info *instance_info_from_json(char *json_data);
+
+#endif
diff --git a/src/main.c b/src/main.c
new file mode 100644
index 0000000..69778bd
--- /dev/null
+++ b/src/main.c
@@ -0,0 +1,121 @@
+#define _POSIX_C_SOURCE 200809L
+#include <err.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <gtk-3.0/gtk/gtk.h>
+#include "auth.h"
+#include "http.h"
+#include "timeline.h"
+#include "window.h"
+
+static GtkWidget *window;
+static GtkWidget *box;
+static GtkWidget *instance_name_box, *email_box, *password_box;
+static GtkWidget *submit_button;
+
+static void submit_login_form() 
+{
+    const char *instance_name, *email, *password;
+    instance_name = gtk_entry_get_text(GTK_ENTRY(instance_name_box));
+    email = gtk_entry_get_text(GTK_ENTRY(email_box));
+    password = gtk_entry_get_text(GTK_ENTRY(password_box));
+    g_print("\n%s\n%s\n%s\n", instance_name, email, password);
+    char *in = strdup(instance_name);
+    int ok;
+    ok = register_app(in);
+    fprintf(stderr, "submit_login_form(): return val %d\n", ok);
+    free(in);
+}
+
+static void submit_button_clicked(GtkButton *button, gpointer user_data)
+{
+    submit_login_form();
+}
+
+static void activate(GtkApplication *app, gpointer user_data)
+{
+    window = gtk_application_window_new(app);
+    gtk_window_set_title(GTK_WINDOW(window), "ap_client");
+    gtk_window_set_default_size(GTK_WINDOW(window), 800, 600);
+    gtk_container_set_border_width(GTK_CONTAINER(window), 10);
+
+    box = gtk_box_new(GTK_ORIENTATION_VERTICAL, 6);
+    gtk_widget_set_valign(GTK_WIDGET(box), GTK_ALIGN_CENTER);
+    gtk_widget_set_halign(GTK_WIDGET(box), GTK_ALIGN_CENTER);
+
+    instance_name_box = gtk_entry_new();
+    gtk_entry_set_placeholder_text(
+            GTK_ENTRY(instance_name_box), "Instance domain");
+
+    email_box = gtk_entry_new();
+    gtk_entry_set_placeholder_text(GTK_ENTRY(email_box), "Email");
+
+    password_box = gtk_entry_new();
+    gtk_entry_set_placeholder_text(GTK_ENTRY(password_box), "Password");
+
+    submit_button = gtk_button_new();
+    g_signal_connect(GTK_BUTTON(submit_button), "clicked",
+            G_CALLBACK(submit_button_clicked), G_OBJECT(window));
+    gtk_button_set_label(GTK_BUTTON(submit_button), "Submit");
+
+    gtk_container_add(GTK_CONTAINER(window), box);
+    gtk_container_add(GTK_CONTAINER(box), instance_name_box);
+    gtk_container_add(GTK_CONTAINER(box), email_box);
+    gtk_container_add(GTK_CONTAINER(box), password_box);
+    gtk_container_add(GTK_CONTAINER(box), submit_button);
+
+    gtk_widget_show_all(window);
+}
+
+int main(int argc, char **argv)
+{
+    /* gtk_init(&argc, &argv); */
+    /* create_main_window(); */
+    /* gtk_main(); */
+    if (http_init()) {
+        fprintf(stderr, "main(): failed to load http library\n");
+        return EXIT_FAILURE;
+    }
+
+    GtkApplication *app;
+    int status;
+
+    app = gtk_application_new("org.gtk.ap_client", G_APPLICATION_FLAGS_NONE);
+    g_signal_connect(app, "activate", G_CALLBACK(activate), NULL);
+    status = g_application_run(G_APPLICATION(app), argc, argv);
+    g_object_unref(app);
+
+    http_cleanup();
+
+    return status;
+
+    /* char *text; */
+    /* struct timeline *t; */
+    /* char *url = "https://mstdn.io/api/v1/timelines/home"; */
+    /* char *token = */
+    /*         "580acfb412e927c2030fb5519f417b03ced1482c862d44376922cd81ee8a3655";
+     */
+
+    /* text = request(url, token); */
+    /* if (!text) { */
+    /*     fprintf(stderr, "main(): failed to get http response\n"); */
+    /*     return EXIT_FAILURE; */
+    /* } */
+
+    /* t = timeline_from_json(text); */
+    /* if (t == NULL) { */
+    /*     fprintf(stderr, "main(): failed to parse timeline\n"); */
+    /*     return EXIT_FAILURE; */
+    /* } */
+
+    /* for (size_t i = 0; i < t->size; i++) { */
+    /*     printf("status id: %s\n", t->statuses[i]->id); */
+    /*     printf("content: %s\n", t->statuses[i]->content); */
+    /*     printf("reblog count: %d\n", t->statuses[i]->reblogs_count); */
+    /*     printf("fav count: %d\n", t->statuses[i]->favourites_count); */
+    /*     printf("\n"); */
+    /* } */
+
+    /* free(text); */
+    /* timeline_free(t); */
+}
diff --git a/src/option.c b/src/option.c
new file mode 100644
index 0000000..011bd94
--- /dev/null
+++ b/src/option.c
@@ -0,0 +1,64 @@
+#define _POSIX_C_SOURCE 200809L
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdbool.h>
+#include <unistd.h>
+#include "option.h"
+
+static const char version[] = "qwe version 0.01";
+static const char usage[] =
+    "Usage: qwe [options...] <file>\n"
+    "\n"
+    "  -i              Hide info bar by default.\n"
+    "  -f              Use fullscreen mode by default.\n"
+    "  -h              Show help message and quit.\n"
+    "  -v              Show the version number and quit.\n";
+
+void print_usage()
+{
+    printf("%s\n", usage);
+}
+
+void print_version()
+{
+    printf("%s\n", version);
+}
+
+struct option _options;
+const struct option *options = (const struct option *)&_options;
+
+void parse_options(int argc, char **argv)
+{
+    // default options
+    _options.fullscreen = false;
+    _options.show_info = true;
+
+    // override options from commandline parameters
+    int opt;
+    while ((opt = getopt(argc, argv, "hvif")) != -1) {
+        switch (opt) {
+        case '?':
+            print_usage();
+            exit(EXIT_FAILURE);
+        case 'h':
+            print_usage();
+            exit(EXIT_SUCCESS);
+        case 'v':
+            print_version();
+            exit(EXIT_SUCCESS);
+        case 'i':
+            _options.show_info = false;
+            break;
+        case 'f':
+            _options.fullscreen = true;
+            break;
+        }
+    }
+
+    if (optind >= argc) {
+        print_usage();
+        exit(EXIT_FAILURE);
+    }
+
+    _options.file_name = argv[optind];
+}
diff --git a/src/option.h b/src/option.h
new file mode 100644
index 0000000..33b8335
--- /dev/null
+++ b/src/option.h
@@ -0,0 +1,14 @@
+#ifndef __OPTION_H
+#define __OPTION_H
+
+#include <stdbool.h>
+
+struct option {
+    char *file_name;
+    bool fullscreen;
+    bool show_info;
+};
+extern const struct option *options;
+void parse_options(int argc, char **argv);
+
+#endif
diff --git a/src/status.c b/src/status.c
new file mode 100644
index 0000000..f96267f
--- /dev/null
+++ b/src/status.c
@@ -0,0 +1,115 @@
+#define _POSIX_C_SOURCE 200809L
+#include <err.h>
+#include <string.h>
+#include <jansson.h>
+#include "status.h"
+
+struct status *status_from_json(char *json_data)
+{
+    json_t *root;
+    json_error_t error;
+
+    root = json_loads(json_data, 0, &error);
+    if (!root) {
+        fprintf(stderr, "status_from_json(): json parse error: line %d: %s\n",
+                error.line, error.text);
+        return NULL;
+    }
+
+    return status_from_json_t(root);
+}
+
+struct status *status_from_json_t(json_t *root)
+{
+    struct status *s;
+    if (!root) {
+        fprintf(stderr, "status_from_json_t(): json data is null\n");
+        return NULL;
+    }
+
+    if (!json_is_object(root)) {
+        fprintf(stderr, "status_from_json_t(): json root is not object\n");
+        json_decref(root);
+        return NULL;
+    }
+
+    s = calloc(1, sizeof(struct status));
+    if (!s) {
+        err(1, "status_from_json_t(): failed to allocate memory");
+        json_decref(root);
+        return NULL;
+    }
+
+    json_t *id = json_object_get(root, "id");
+    if (json_is_string(id)) {
+        s->id = strdup(json_string_value(id));
+    }
+
+    json_t *uri = json_object_get(root, "uri");
+    if (json_is_string(uri)) {
+        s->uri = strdup(json_string_value(uri));
+    }
+
+    json_t *url = json_object_get(root, "url");
+    if (json_is_string(url)) {
+        s->url = strdup(json_string_value(url));
+    }
+
+    json_t *in_reply_to_id = json_object_get(root, "in_reply_to_id");
+    if (json_is_string(in_reply_to_id)) {
+        s->in_reply_to_id = strdup(json_string_value(in_reply_to_id));
+    }
+
+    json_t *in_reply_to_account_id =
+            json_object_get(root, "in_reply_to_account_id");
+    if (json_is_string(in_reply_to_account_id)) {
+        s->in_reply_to_account_id =
+                strdup(json_string_value(in_reply_to_account_id));
+    }
+
+    json_t *content = json_object_get(root, "content");
+    if (json_is_string(content)) {
+        s->content = strdup(json_string_value(content));
+    }
+
+    json_t *replies_count = json_object_get(root, "replies_count");
+    if (json_is_integer(replies_count)) {
+        s->replies_count = json_integer_value(replies_count);
+    }
+
+    json_t *reblogs_count = json_object_get(root, "reblogs_count");
+    if (json_is_integer(reblogs_count)) {
+        s->reblogs_count = json_integer_value(reblogs_count);
+    }
+
+    json_t *favourites_count = json_object_get(root, "favourites_count");
+    if (json_is_integer(favourites_count)) {
+        s->favourites_count = json_integer_value(favourites_count);
+    }
+
+    json_decref(root);
+    return s;
+}
+
+void status_free(struct status *s)
+{
+    if (!s) {
+        fprintf(stderr, "status_free(): status not initializes");
+        return;
+    }
+    if (s->id)
+        free(s->id);
+    if (s->uri)
+        free(s->uri);
+    if (s->url)
+        free(s->url);
+    if (s->in_reply_to_id != NULL)
+        free(s->in_reply_to_id);
+    if (s->in_reply_to_account_id)
+        free(s->in_reply_to_account_id);
+    if (s->reblog)
+        status_free(s->reblog);
+    if (s->content)
+        free(s->content);
+    free(s);
+}
diff --git a/src/status.h b/src/status.h
new file mode 100644
index 0000000..ede3540
--- /dev/null
+++ b/src/status.h
@@ -0,0 +1,31 @@
+#ifndef __STATUS_H
+#define __STATUS_H
+
+#include <stdbool.h>
+#include <jansson.h>
+
+#include "account.h"
+
+struct status {
+    char *id;
+    char *uri;
+    char *url;
+    struct account *account;
+    char *in_reply_to_id;
+    char *in_reply_to_account_id;
+    struct status *reblog;
+    char *content;
+    unsigned int replies_count;
+    unsigned int reblogs_count;
+    unsigned int favourites_count;
+    bool reblogged;
+    bool favourited;
+    bool muted;
+    bool sensitive;
+};
+
+struct status *status_from_json(char *);
+struct status *status_from_json_t(json_t *);
+void status_free(struct status *);
+
+#endif
diff --git a/src/string-util.c b/src/string-util.c
new file mode 100644
index 0000000..e183288
--- /dev/null
+++ b/src/string-util.c
@@ -0,0 +1,85 @@
+/*	$OpenBSD: src/lib/libc/string/strlcpy.c,v 1.11 2006/05/05 15:27:38
+ * millert Exp $	*/
+
+/*
+ * Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <sys/types.h>
+#include <string.h>
+
+/*
+ * Copy src to string dst of size siz.  At most siz-1 characters
+ * will be copied.  Always NUL terminates (unless siz == 0).
+ * Returns strlen(src); if retval >= siz, truncation occurred.
+ */
+size_t strlcpy(char *dst, const char *src, size_t siz)
+{
+    char *d = dst;
+    const char *s = src;
+    size_t n = siz;
+
+    /* Copy as many bytes as will fit */
+    if (n != 0) {
+        while (--n != 0) {
+            if ((*d++ = *s++) == '\0')
+                break;
+        }
+    }
+
+    /* Not enough room in dst, add NUL and traverse rest of src */
+    if (n == 0) {
+        if (siz != 0)
+            *d = '\0'; /* NUL-terminate dst */
+        while (*s++)
+            ;
+    }
+
+    return (s - src - 1); /* count does not include NUL */
+}
+
+/*
+ * Appends src to string dst of size siz (unlike strncat, siz is the
+ * full size of dst, not space left).  At most siz-1 characters
+ * will be copied.  Always NUL terminates (unless siz <= strlen(dst)).
+ * Returns strlen(src) + MIN(siz, strlen(initial dst)).
+ * If retval >= siz, truncation occurred.
+ */
+size_t strlcat(char *dst, const char *src, size_t siz)
+{
+    char *d = dst;
+    const char *s = src;
+    size_t n = siz;
+    size_t dlen;
+
+    /* Find the end of dst and adjust bytes left but don't go past end */
+    while (n-- != 0 && *d != '\0')
+        d++;
+    dlen = d - dst;
+    n = siz - dlen;
+
+    if (n == 0)
+        return (dlen + strlen(s));
+    while (*s != '\0') {
+        if (n != 1) {
+            *d++ = *s;
+            n--;
+        }
+        s++;
+    }
+    *d = '\0';
+
+    return (dlen + (s - src)); /* count does not include NUL */
+}
diff --git a/src/string-util.h b/src/string-util.h
new file mode 100644
index 0000000..5bf6f11
--- /dev/null
+++ b/src/string-util.h
@@ -0,0 +1,9 @@
+#ifndef __STRING_UTIL_H
+#define __STRING_UTIL_H
+
+#include <sys/types.h>
+
+size_t strlcpy(char *dst, const char *src, size_t siz);
+size_t strlcat(char *dst, const char *src, size_t siz);
+
+#endif
diff --git a/src/timeline.c b/src/timeline.c
new file mode 100644
index 0000000..c2ca486
--- /dev/null
+++ b/src/timeline.c
@@ -0,0 +1,70 @@
+#define _POSIX_C_SOURCE 200809L
+#include <err.h>
+#include <string.h>
+#include <jansson.h>
+#include "timeline.h"
+
+struct timeline *timeline_from_json(char *json_data)
+{
+    json_t *root;
+    json_error_t error;
+    struct timeline *t;
+
+    root = json_loads(json_data, 0, &error);
+
+    if (!root) {
+        fprintf(stderr, "timeline_free(): json root it null\n");
+        return NULL;
+    }
+
+    if (!json_is_array(root)) {
+        fprintf(stderr, "timeline_free(): timeline not initialized\n");
+        json_decref(root);
+        return NULL;
+    }
+
+    t = calloc(1, sizeof(struct timeline));
+    if (!t) {
+        err(1, "timeline_from_json(): failed to allocate memory");
+        json_decref(root);
+        return NULL;
+    }
+
+    t->size = json_array_size(root);
+    t->statuses = calloc(t->size, sizeof(struct status *));
+    if (!(t->statuses)) {
+        err(1, "timeline_from_json(): failed to allocate memory");
+        json_decref(root);
+        return NULL;
+    }
+
+    for (size_t i = 0; i < t->size; i++) {
+        json_t *data;
+        data = json_array_get(root, i);
+        if (!data)
+            goto error;
+        t->statuses[i] = status_from_json_t(data);
+        if (!(t->statuses[i]))
+            goto error;
+    }
+    json_decref(root);
+    return t;
+
+error:
+    timeline_free(t);
+    json_decref(root);
+    return NULL;
+}
+
+void timeline_free(struct timeline *t)
+{
+    if (!t) {
+        fprintf(stderr, "timeline_free(): timeline not initialized\n");
+        return;
+    }
+    for (size_t i = 0; i < t->size; i++) {
+        if (t->statuses[i])
+            status_free(t->statuses[i]);
+    }
+    free(t);
+}
diff --git a/src/timeline.h b/src/timeline.h
new file mode 100644
index 0000000..f21b3b6
--- /dev/null
+++ b/src/timeline.h
@@ -0,0 +1,14 @@
+#ifndef __TIMELINE_H
+#define __TIMELINE_H
+
+#include "status.h"
+
+struct timeline {
+    struct status **statuses;
+    size_t size;
+};
+
+struct timeline *timeline_from_json(char *);
+void timeline_free(struct timeline *);
+
+#endif
diff --git a/src/window.c b/src/window.c
new file mode 100644
index 0000000..02c6073
--- /dev/null
+++ b/src/window.c
@@ -0,0 +1,31 @@
+#define _POSIX_C_SOURCE 200809L
+#include <stdbool.h>
+#include <gtk-3.0/gtk/gtk.h>
+
+#define WINDOW_TITLE "ap_client"
+
+GtkWidget *window;
+GtkWidget *scrolled_window;
+
+void create_main_window()
+{
+    // root window
+    window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
+    g_signal_connect(window, "destroy", G_CALLBACK(gtk_main_quit), NULL);
+    gtk_widget_set_name(GTK_WIDGET(window), "main-window");
+    gtk_window_set_title(GTK_WINDOW(window), WINDOW_TITLE);
+    gtk_window_set_default_size(GTK_WINDOW(window), 800, 600);
+
+    // scrolled window
+    scrolled_window = gtk_scrolled_window_new(NULL, NULL);
+    gtk_widget_set_vexpand(GTK_WIDGET(scrolled_window), true);
+    gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scrolled_window),
+            GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
+    GtkWidget *viewport = gtk_viewport_new(NULL, NULL);
+    gtk_container_add(GTK_CONTAINER(scrolled_window), GTK_WIDGET(viewport));
+    gtk_container_add(GTK_CONTAINER(window), GTK_WIDGET(scrolled_window));
+    gtk_widget_show_all(GTK_WIDGET(window));
+}
+
+
+
diff --git a/src/window.h b/src/window.h
new file mode 100644
index 0000000..947cdbe
--- /dev/null
+++ b/src/window.h
@@ -0,0 +1,7 @@
+#ifndef __WINDOW_H
+#define __WINDOW_H
+
+void create_main_window();
+
+#endif
+