draft

~/C/rest_server/.gitignore

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+orcania/
+ulfius/
+
+*.a
+
+rest

~/C/rest_server/Makefile

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+CC = clang
+
+all:
+	$(CC) -std=c99 -Wall -O3 -o rest main.c -lulfius -lorcania
+
+tcc:
+	tcc -O3 -I./ulfius/include -I./orcania/include -o rest main.c libulfius.2.7.13.a liborcania.2.3.2.a -lyder -lgnutls -lz -ljansson -lmicrohttpd -lcurl

~/C/rest_server/README.md

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+REST API
+--------
+
+* `http://localhost:8000/api/param/:name` - возвращает `:name`
+* `http://localhost:8000/api/param/quit` - завершит выполнение программы
+
+Зависимости
+-----------
+
+* [ulfius](https://github.com/babelouest/ulfius)
+* [orcania](https://github.com/babelouest/orcania)
+
+```sh
+ar rcs libulfius.2.7.13.a ulfius.o u_map.o u_request.o u_response.o u_send_request.o u_websocket.o yuarel.o
+ar rcs liborcania.2.3.2.a orcania.o memory.o base64.o
+```

~/C/rest_server/main.c

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+#include <sys/socket.h>
+#include <arpa/inet.h>
+#include <netinet/in.h>
+#include <stdio.h>
+#include <stdbool.h>
+#include <string.h>
+#include <pthread.h>
+#include <ulfius.h>
+
+#include <stdatomic.h>
+
+#include "utils.h"
+#include "server.h"
+
+int main(int argc, char **argv) {
+  // создаём отдельный поток, в котором запускаем сервер
+  pthread_t tid;
+  pthread_create(&tid, NULL, thread_server, (void *)&tid);
+
+  // while (true) {
+  // }
+
+  pthread_exit(NULL);
+
+  return 0;
+}

~/C/rest_server/server.h

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+atomic_bool running = true;
+
+#define PORT 8000
+#define PREFIX "/api"
+
+int callback_default(const struct _u_request *request,
+                     struct _u_response *response, void *user_data);
+int callback_all_test_foo(const struct _u_request *request,
+                          struct _u_response *response, void *user_data);
+
+void *thread_server(void *vargp) {
+  int ret;
+  struct _u_instance instance;
+
+  if (ulfius_init_instance(&instance, PORT, NULL, NULL) != U_OK) {
+    exit(1);
+  }
+
+  instance.max_post_body_size = 1024;
+
+  ulfius_add_endpoint_by_val(&instance, "GET", PREFIX, "/param/:name", 0,
+                             &callback_all_test_foo, "user data 1");
+  ulfius_add_endpoint_by_val(&instance, "POST", PREFIX, "/param/:name", 0,
+                             &callback_all_test_foo, "user data 2");
+
+  ulfius_set_default_endpoint(&instance, &callback_default, NULL);
+
+  ret = ulfius_start_framework(&instance);
+
+  if (ret == U_OK) {
+    printf("Server started at %d.\n", PORT);
+  } else {
+    printf("Error starting server as %d port.\n", PORT);
+  }
+
+  while (running) {
+  }
+  printf("Server halt.\n");
+
+  ulfius_stop_framework(&instance);
+  ulfius_clean_instance(&instance);
+}
+
+int callback_default(const struct _u_request *request,
+                     struct _u_response *response, void *user_data) {
+  (void)(request);
+  (void)(user_data);
+  ulfius_set_string_body_response(response, 404,
+                                  "Page not found, do what you want");
+
+  return U_CALLBACK_CONTINUE;
+}
+
+int callback_all_test_foo(const struct _u_request *request,
+                          struct _u_response *response, void *user_data) {
+  // url_params = request->map_url
+  // post_params = request->map_post_body
+
+  const char **keys, *value;
+  keys = u_map_enum_keys(request->map_url);
+  value = u_map_get(request->map_url, keys[0]);
+
+  if (strcmp("quit", value) == 0) {
+    running = false;
+  }
+
+  char *response_body = msprintf("Your %s is %s\n", keys[0], value);
+
+  print_to_terminal(response_body);
+  ulfius_set_string_body_response(response, 200, response_body);
+
+  o_free(response_body);
+
+  return U_CALLBACK_CONTINUE;
+}

~/C/rest_server/utils.h

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+void print_to_terminal(char *text) { printf("%s", text); }