Reorganize the lib

1 files changed, 0 insertions, 586 deletions

diff --git a/lib/http.c b/lib/http.c
deleted file mode 100644
index 64b357b..0000000
--- a/lib/http.c
+++ /dev/null
@@ -1,586 +0,0 @@
-#include "http.h"
-
-#define MAX_DATA_SIZE 256
-#define BUFFER_SIZE 4096
-#define REQUEST_ARENA_SIZE 1024
-
-int volatile keepRunning = 1;
-
-struct {
-  http_response_code code;
-  const_string string;
-} response_strings [] = {
-  {100, CS_STATIC("Continue")},
-  {101, CS_STATIC("Switching Protocols")},
-  {102, CS_STATIC("Processing")},
-  {103, CS_STATIC("Early Hints")},
-  {200, CS_STATIC("OK")},
-  {201, CS_STATIC("Created")},
-  {202, CS_STATIC("Accepted")},
-  {204, CS_STATIC("No Content")},
-  {300, CS_STATIC("Multiple Choices")},
-  {301, CS_STATIC("Moved Permanently")},
-  {302, CS_STATIC("Found")},
-  {303, CS_STATIC("See Other")},
-  {304, CS_STATIC("Not Modified")},
-  {307, CS_STATIC("Temporary Redirect")},
-  {308, CS_STATIC("Permanent Redirect")},
-  {400, CS_STATIC("Bad Request")},
-  {401, CS_STATIC("Unauthorized")},
-  {402, CS_STATIC("Payment Required")},
-  {403, CS_STATIC("Forbidden")},
-  {404, CS_STATIC("Not Found")},
-  {405, CS_STATIC("Method Not Allowed")},
-  {406, CS_STATIC("Not Acceptable")},
-  {408, CS_STATIC("Request Timeout")},
-  {418, CS_STATIC("Im A Teepot")},
-  {500, CS_STATIC("Internal Server Error")},
-  {501, CS_STATIC("Not Implemented")},
-  {502, CS_STATIC("Bad Gateway")},
-  {503, CS_STATIC("Service Unavailable")},
-  {505, CS_STATIC("Http Version Not Suppported")},
-};
-
-const_string get_response_string(http_response_code code) {
-  for (int i = 0; sizeof(response_strings)/sizeof(response_strings[0]) ;i++) {
-	if (response_strings[i].code == code) {
-	  return response_strings[i].string;
-	}
-  }
-  return CS("");
-}
-
-
-void sigchld_handler() {
-    // waitpid() might overwrite errno, so we save and restore it:
-    int saved_errno = errno;
-
-    while(waitpid(-1, NULL, WNOHANG) > 0);
-
-    errno = saved_errno;
-}
-
-void http_log(http_log_level log, char *fmt, ...) {
-  switch (log) {
-  case HTTP_INFO:
-	fprintf(stderr, "[INFO] ");
-	break;
-	
-  case HTTP_WARNING:
-	fprintf(stderr, "[WARNING] ");
-	break;
-
-  case HTTP_ERROR:
-	fprintf(stderr, "[ERROR] ");
-	break;
-  }
-
-  va_list args;
-  va_start(args, fmt);
-  vfprintf(stderr, fmt, args);
-  va_end(args);
-}
-
-
-void *get_in_addr(struct sockaddr *sa) {
-	if (sa->sa_family == AF_INET) {
-		return &(((struct sockaddr_in*)sa)->sin_addr);
-	}
-
-	return &(((struct sockaddr_in6*)sa)->sin6_addr);
-}
-
-int get_in_port(struct sockaddr *sa) {
-  if (sa->sa_family == AF_INET) {
-	return ntohs((((struct sockaddr_in*)sa)->sin_port));
-  }
-
-  return (((struct sockaddr_in6*)sa)->sin6_port);
-}
-
-void set_context_value(arena *arena, http_context *ctx, http_context_value kv) {
-  for (size_t i = 0; i < ctx->len; i++) {
-	http_context_value *ctx_val = (ctx->data + i);
-	if (cs_eq(kv.key, ctx_val->key)) {
-	  ctx_val->val = kv.val;
-	  return;
-	}
-  }
-  arena_da_append(arena, ctx, kv);
-}
-
-void *get_context_value(http_context *ctx, char* key) {
-  if (ctx == NULL) {
-	return NULL;
-  }
-
-  const_string key_cs = cs_from_cstr(key);
-  for (size_t i = 0; i < ctx->len; i++) {
-	http_context_value *ctx_val = (ctx->data + i);
-	if (cs_eq(key_cs, ctx_val->key)) {
-	  return ctx_val->val;
-	}
-  }
-  return NULL;
-}
-
-void http_internal_server_error_handler(http_request req) {
-  const_string *error = get_context_value(req.ctx, "error");
-  req.resp->code = INTERNAL_SERVER_ERROR;
-  req.resp->body = *error;
-  http_send(req);
-}
-
-void http_not_found_handler(http_request req) {
-  req.resp->code = NOT_FOUND;
-  http_send(req);
-}
-
-void http_run_next(http_middleware *self, http_request req) {
-  if (self->next == NULL) {
-	(self->handler)(req);
-	return;
-  }
-  
-  (self->next->func)(self->next, req);
-};
-
-void http_register_handler_middleware(arena *arena, http_handler *hand, http_middleware_func func) {
-  http_middleware *middleware = arena_alloc(arena, sizeof(http_middleware));
-  middleware->func = func;
-  middleware->handler = hand->func;
-  if (hand->middleware == NULL) {
-	hand->middleware = middleware;
-	return;
-  }
-
-  http_middleware **prev = &hand->middleware;
-  http_middleware *next = hand->middleware;
-  while (next->next != NULL) {
-	prev = &next;
-	next = next->next;
-  }
-  middleware->next = next;
-  *prev = middleware;
-}
-
-void http_register_global_middleware(http_server *serv, http_middleware_func func) {
-  arena *arena = serv->arena;
-  
-  http_middleware *middleware = arena_alloc(arena, sizeof(http_middleware));
-  http_handler_func *handler = arena_alloc(arena, sizeof(http_handler_func));
-  middleware->func = func;
-  middleware->handler = *handler;
-  if (serv->global_middleware == NULL) {
-	http_global_middleware *global_middleware = arena_alloc(arena, sizeof(http_global_middleware));
-	global_middleware->start = middleware;
-	global_middleware->end = middleware;
-	serv->global_middleware = global_middleware;
-	return;
-  }
-
-  serv->global_middleware->end->next = middleware;
-  serv->global_middleware->end = middleware;
-}
-
-int init_server(arena *arena, http_server *serv, char *addr, char *port) {
-  // serv initialization
-  struct addrinfo hints, *res;
-
-  memset(&hints, 0, sizeof hints);
-  hints.ai_family = AF_UNSPEC;
-  hints.ai_socktype = SOCK_STREAM;
-  hints.ai_flags = AI_PASSIVE;
-
-  int status = getaddrinfo(addr, port, &hints, &res);
-  if (status != 0) {
-	fprintf(stderr, "getaddrinfo: %s\n", gai_strerror(status));
-	return 1;
-  }
-
-  int sockfd = socket(res->ai_family, res->ai_socktype, 0);
-  if (sockfd < 0) {
-	perror("socket");
-	return 1;
-  }
-
-  int yes = 1;
-  if (setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, &yes, sizeof yes) == -1) {
-	perror("setsockopt");
-	return 1;
-  }
-
-  if (bind(sockfd, res->ai_addr, res->ai_addrlen)) {
-	perror("bind");
-	return 1;
-  }
-
-  serv->arena = arena;
-  serv->addr = (struct sockaddr *)res->ai_addr;
-  serv->sockfd = sockfd;
-
-  freeaddrinfo(res);
-
-  struct sigaction sa;
-  sa.sa_handler = sigchld_handler;
-  sigemptyset(&sa.sa_mask);
-  sa.sa_flags = SA_RESTART;
-  if (sigaction(SIGCHLD, &sa, NULL) == -1) {
-	perror("sigaction");
-	return 1;
-  }
-
-  return 0;
-}
-
-http_handler *http_handle_path(http_server *serv, char* method, char* path, http_handler_func handler) {
-  http_handler hand = {
-	.method = cs_from_cstr(method),
-	.path = cs_from_cstr(path),
-	.func = handler,
-  };
-  
-  arena_da_append(serv->arena, &serv->handlers, hand);
-  return &serv->handlers.data[serv->handlers.len-1];
-}
-
-const_string http_compose_response(arena *arena, http_response *resp) {
-  const_string_da header_da = {0};
-  arena_da_append(arena, &header_da, CS("HTTP/1.1"));
-
-  if (resp->code != 0) {
-	char buf[4];
-	sprintf(buf, "%ld", resp->code);
-	arena_da_append(arena, &header_da, cs_from_cstr(buf));
-	arena_da_append(arena, &header_da, get_response_string(resp->code));
-  } else {
-	printf("Response is handeled, but no code is given\n");
-	arena_da_append(arena, &header_da, CS("500"));
-	arena_da_append(arena, &header_da, get_response_string(INTERNAL_SERVER_ERROR));
-  }
-
-  const_string_da resp_da= {0};
-
-  const_string http_header = arena_cs_concat(arena, header_da, CS(" "));
-  arena_da_append(arena, &resp_da, http_header);
-
-  for (size_t i = 0; i < resp->headers.len; i++) {
-	KV *header = (resp->headers.data + i);
-	const_string header_str = {0};
-	header_str = arena_cs_append(arena, header_str, header->key);
-	header_str = arena_cs_append(arena, header_str, CS(": "));
-	header_str = arena_cs_append(arena, header_str, header->value);
-	arena_da_append(arena, &resp_da, header_str);
-  }
-  
-  arena_da_append(arena, &resp_da, CS(""));
-  if (resp->body.len != 0) {
-	arena_da_append(arena, &resp_da, resp->body);
-  }
-  
-  const_string str = arena_cs_concat(arena, resp_da, CS("\r\n"));
-  
-  return str;
-}
-
-
-void http_send_response(size_t inc_fd, const_string resp) {
-  const char *resp_cstr = resp.data;
-  int resp_len = resp.len;
-
-  int sent = send(inc_fd, resp_cstr, resp_len, 0);
-  while (sent > 0 && resp_len - sent > 0) {
-	resp_len -= sent;
-	sent = send(inc_fd, resp_cstr, resp_len, 0);
-  }
-
-  if (sent < 0) {
-	perror("send");
-  }
-}
-
-void http_send(http_request req) {
-  arena *arena = req.arena;
-  
-  assert(req.resp->code);
-  const_string response = http_compose_response(arena, req.resp);
-  http_send_response(req.inc_fd, response);
-  req.resp->sent = true;
-}
-
-void http_send_json(http_request req, const_string json) {
-  arena *arena = req.arena;
-  
-  int num_str_len = snprintf(NULL, 0, "%d", json.len);
-  char* len_str = arena_alloc(arena, snprintf(NULL, 0, "%d", json.len));
-  sprintf(len_str, "%d", json.len);
-  const_string len_cs = {len_str, num_str_len};
-
-  arena_da_append(arena, &req.resp->headers, ((KV){CS("Content-Length"), len_cs}));
-  arena_da_append(arena, &req.resp->headers, ((KV){CS("Content-Type"), CS("application/json")}));
-  req.resp->body = json;
-  
-  http_send(req);
-}
-void http_send_body(http_request req, const_string body) {
-  arena *arena = req.arena;
-  
-  int num_str_len = snprintf(NULL, 0, "%d", body.len+2);
-  char* len_str = arena_alloc(arena, snprintf(NULL, 0, "%d", body.len));
-  sprintf(len_str, "%d", body.len);
-  const_string len_cs = {len_str, num_str_len};
-
-  arena_da_append(arena, &req.resp->headers, ((KV){CS("Content-Length"), len_cs}));
-  arena_da_append(arena, &req.resp->headers, ((KV){CS("Content-Type"), CS("application/text")}));
-  req.resp->body = body;
-
-  http_send(req);
-}
-
-int chop_query(arena *arena, const_string *path, http_query_da *queries) {
-  const_string queries_str = *path;
-  int query_count = 0;
-
-  if (!cs_try_chop_delim(&queries_str, '?', path)) {
-	return 0;
-  }
-
-  const_string query_str;
-
-  if (!cs_try_chop_delim(&queries_str, '&', &query_str)) {
-	query_str = queries_str;
-  }
-
-  do {
-	KV query = {0};
-	const_string key;
-	if (!cs_try_chop_delim(&query_str, '=', &key)) {
-	  return -1;
-	}
-	
-	query.key = key;
-	query.value = query_str;
-	arena_da_append(arena, queries, query);
-	query_count++;
-  } while (cs_try_chop_delim(&queries_str, '&', &query_str));
-  
-  return query_count;
-}
-
-const_string chop_request(const_string *req_str, char delim, bool *parse_err) {
-  if (*parse_err) {
-	return CS("");
-  }
-  const_string str;
-  if (!cs_try_chop_delim(req_str, delim, &str)) {
-	*parse_err = true;
-	return CS("");
-  }
-  return str;
-}
-
-int parse_request(arena *arena, size_t inc_fd, http_request *req) {
-  char buf[MAX_DATA_SIZE];
-  const_string req_str = {0};
-
-  int got = recv(inc_fd, &buf, MAX_DATA_SIZE - 1, 0);
-  if (got < 0) {
-	perror("recv");
-	return REQUEST_TIMEOUT;
-  }
-
-  buf[got] = '\0';
-
-  req_str = arena_cs_append(arena, req_str, cs_from_cstr(buf));
-
-  while (got == MAX_DATA_SIZE - 1) {
-	got = recv(inc_fd, &buf, MAX_DATA_SIZE - 1, 0);
-	if (got < 0) {
-	  perror("recv");
-	  return REQUEST_TIMEOUT;
-	}
-	
-	buf[got] = '\0';
-
-	const_string tmp = cs_from_parts(buf, got);
-	req_str = arena_cs_append(arena, req_str, tmp);
-  }
-
-  bool parse_err = false;
-  
-  const_string method = chop_request(&req_str, ' ', &parse_err);
-  const_string path = chop_request(&req_str, ' ', &parse_err);
-  chop_request(&req_str, '\r', &parse_err);
-  req_str.data += 1;
-
-  header_da headers = {0};
-  while (!parse_err && req_str.data[0] != '\r') {
-	const_string header_str = chop_request(&req_str, '\r', &parse_err);
-	req_str.data += 1;
-
-	KV header;
-	header.key = chop_request(&header_str, ':', &parse_err);
-	header_str.data++;
-	header.value = header_str;
-
-	arena_da_append(arena, &headers, header);
-  }
-  chop_request(&req_str, '\n', &parse_err);
-  
-  if (parse_err) {
-	return BAD_REQUEST;
-  }
-
-  http_query_da queries = {0};
-  
-  if (chop_query(arena, &path, &queries) < 0) {
-	return BAD_REQUEST;
-  }
-  
-  
-  req->method = method;
-  req->path = path;
-  req->query = queries;
-  req->headers = headers;
-  req->body = req_str;
-  
-  return 0;
-}
-
-bool check_handler(http_handler hand, http_request req) {
-  arena *arena = req.arena;
-  http_context *ctx = req.ctx;
-  
-  const_string handler_path = hand.path;
-  const_string req_path = req.path;
-  if (!(cs_eq(hand.method, req.method) ||
-		(cs_eq(hand.method, CS("GET")) && cs_eq(req.method, CS("HEAD"))))) {
-	return false;
-  }
-
-  const_string path;
-  bool entered = false;
-
-  while (cs_try_chop_delim(&handler_path, ':', &path)) {
-	entered = true;
-	
-	const_string req_byte = {req_path.data, path.len};
-	if (!cs_eq(path, req_byte)) {
-	  return false;
-	}
-	
-	req_path.data += path.len;
-	req_path.len -= path.len;
-
-	const_string name = cs_chop_delim(&handler_path, '/');
-	const_string tmp = cs_chop_delim(&req_path, '/');
-	const_string *value = arena_alloc(arena, sizeof(const_string));
-	*value = tmp;
-	set_context_value(arena, ctx, (http_context_value){name, (void *)value});
-  }
-  
-  if (!entered && !cs_eq(handler_path, req_path)) {
-	return false;
-  }
-  
-  return true;
-}
-
-struct process_request_args {
-  http_server serv;
-  size_t inc_fd;
-};
-
-void *process_request(void *args) {
-  struct process_request_args *pargs = args;
-  http_server serv = pargs->serv;
-  size_t inc_fd = pargs->inc_fd;
-  
-  arena req_arena = {0};
-
-  http_request req = {0};
-  req.inc_fd = inc_fd;
-  req.arena = &req_arena;
-  
-  http_response resp = {0};
-  req.resp = &resp;
-  
-  int parse_res = parse_request(&req_arena, inc_fd, &req);
-  if (parse_res != 0) {
-	resp.code = parse_res;
-	http_send(req);
-  }
-
-  http_context req_context = {0};
-  for (size_t i = 0; i < serv.global_ctx.len; i++) {
-	set_context_value(&req_arena, &req_context, *(serv.global_ctx.data + i));
-  }
-  req.ctx = &req_context;
-
-  http_global_middleware *g_mid = serv.global_middleware;
-  if (!resp.sent) {
-	for (size_t i = 0; i < serv.handlers.len; i++) {
-	  http_handler handler = serv.handlers.data[i];
-	  if (check_handler(handler, req)) {
-		if (serv.global_middleware != NULL) {
-		  g_mid->end->next = handler.middleware;
-		  g_mid->end->handler = handler.func;
-		  g_mid->start->func(g_mid->start, req);
-		} else if (handler.middleware != NULL) {
-		  handler.middleware->func(handler.middleware, req);
-		} else {
-		  handler.func(req);
-		}
-		
-		if (!resp.sent) {
-		  const_string error = CS("Server handled the request but did not send anything\n");
-		  http_log(HTTP_ERROR, "%s", error.data);
-		  set_context_value(&req_arena, &req_context, (http_context_value){CS("error"), (void *)&error});
-		  g_mid->end->handler = http_internal_server_error_handler;
-		  g_mid->start->func(g_mid->start, req);
-		}
-		break;
-	  }
-	}
-  }
-
-  if (!resp.code) {
-	g_mid->end->handler = http_not_found_handler;
-	g_mid->start->func(g_mid->start, req);
-  }
-
-  close(inc_fd);
-  arena_free(&req_arena);
-
-  pthread_exit(NULL);
-}
-
-int listen_and_serve(http_server *serv) {
-  if (listen(serv->sockfd, 10) != 0) {
-	perror("listen");
-	return 1;
-  }
-  
-  char my_ipstr[INET6_ADDRSTRLEN];
-  inet_ntop(serv->addr->sa_family, get_in_addr(serv->addr), my_ipstr, sizeof my_ipstr);
-  http_log(HTTP_INFO, "Listening on %s:%d\n", my_ipstr, get_in_port(serv->addr));
-
-  while (keepRunning) {
-	struct sockaddr inc_addr;
-	socklen_t addr_size = sizeof inc_addr;
-	int inc_fd = accept(serv->sockfd, &inc_addr, &addr_size);
-	if (inc_fd < 0) {
-	  perror("accept");
-	  return 1;
-	}
-
-	struct process_request_args args = {
-	  .serv = *serv,
-	  .inc_fd = inc_fd,
-	};
-	
-	pthread_t thread_id;
-	pthread_create(&thread_id, NULL, process_request, (void *)&args);
-  }
-  return 0;
-}