refactor: change project structure

src/http/request.c

@@ -0,0 +1,190 @@
+#include "http/request.h"
+
+#include <fcntl.h>
+#include <myclib/mystring.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "utils/debug.h"
+#include "utils/hash_utils.h"
+
+static cws_http_s *http_new() {
+	cws_http_s *request = malloc(sizeof(cws_http_s));
+	if (!request) {
+		return NULL;
+	}
+	memset(request, 0, sizeof *request);
+
+	request->http_version = string_new("", 16);
+	request->location = string_new("", 128);
+	request->location_path = string_new("", 128);
+
+	return request;
+}
+
+static cws_http_method_e http_parse_method(const char *method) {
+	if (strcmp(method, "GET") == 0) {
+		return HTTP_GET;
+	}
+
+	if (strcmp(method, "POST") == 0) {
+		return HTTP_POST;
+	}
+
+	return HTTP_UNKNOWN;
+}
+
+cws_http_s *cws_http_parse(string_s *request_str) {
+	if (!request_str || !request_str->data) {
+		return NULL;
+	}
+
+	cws_http_s *request = http_new();
+	if (request == NULL) {
+		return NULL;
+	}
+
+	char *str = strdup(request_str->data);
+	if (!str) {
+		cws_http_free(request);
+		return NULL;
+	}
+	char *str_free = str;
+
+	/* Parse HTTP method */
+	str += strspn(str, " ");
+	if (*str == '\0') {
+		free(str_free);
+		cws_http_free(request);
+		return NULL;
+	}
+	size_t len = strcspn(str, " ");
+	if (str[len] == '\0') {
+		free(str_free);
+		cws_http_free(request);
+		return NULL;
+	}
+	str[len] = '\0';
+	CWS_LOG_DEBUG("method: %s", str);
+	request->method = http_parse_method(str);
+	str += len + 1;
+
+	/* Parse location */
+	str += strspn(str, " ");
+	if (*str == '\0') {
+		free(str_free);
+		cws_http_free(request);
+		return NULL;
+	}
+	len = strcspn(str, " ");
+	if (str[len] == '\0') {
+		free(str_free);
+		cws_http_free(request);
+		return NULL;
+	}
+	str[len] = '\0';
+	string_append(request->location, str);
+	str += len + 1;
+
+	/* Adjust location path */
+	/* @TODO: fix path traversal */
+	string_append(request->location_path, "www");
+	if (strcmp(request->location->data, "/") == 0) {
+		string_append(request->location_path, "/index.html");
+	} else {
+		string_append(request->location_path, request->location->data);
+	}
+	CWS_LOG_DEBUG("location path: %s", request->location_path->data);
+
+	/* Parse HTTP version */
+	str += strspn(str, " \t");
+	if (*str == '\0') {
+		free(str_free);
+		cws_http_free(request);
+		return NULL;
+	}
+	len = strcspn(str, "\r\n");
+	if (len == 0) {
+		free(str_free);
+		cws_http_free(request);
+		return NULL;
+	}
+	str[len] = '\0';
+	CWS_LOG_DEBUG("version: %s", str);
+	string_append(request->http_version, str);
+	str += len;
+
+	/* Parse headers until a blank line (\r\n\r\n) */
+	request->headers =
+		hm_new(my_str_hash_fn, my_str_equal_fn, my_str_free_fn, my_str_free_fn,
+			   sizeof(char) * CWS_HTTP_HEADER_MAX, sizeof(char) * CWS_HTTP_HEADER_CONTENT_MAX);
+
+	str += strspn(str, "\r\n");
+
+	while (*str != '\0' && *str != '\r') {
+		char *line_end = strstr(str, "\r\n");
+		if (!line_end) {
+			break;
+		}
+		*line_end = '\0';
+
+		char *colon = strchr(str, ':');
+		if (!colon) {
+			str = line_end + 2;
+			continue;
+		}
+
+		*colon = '\0';
+
+		char *header_key = str;
+		char *header_value = colon + 1;
+		header_value += strspn(header_value, " \t");
+
+		char hk[CWS_HTTP_HEADER_MAX];
+		char hv[CWS_HTTP_HEADER_CONTENT_MAX];
+
+		strncpy(hk, header_key, sizeof(hk) - 1);
+		hk[sizeof(hk) - 1] = '\0';
+
+		strncpy(hv, header_value, sizeof(hv) - 1);
+		hv[sizeof(hv) - 1] = '\0';
+
+		hm_set(request->headers, hk, hv);
+
+		/* Move to the next line */
+		str = line_end + 2;
+	}
+
+	free(str_free);
+
+	/* TODO: Parse body */
+	/* str is at the beginning of the body */
+
+	return request;
+}
+
+void cws_http_free(cws_http_s *request) {
+	if (!request) {
+		return;
+	}
+
+	if (request->headers) {
+		hm_free(request->headers);
+	}
+
+	if (request->http_version) {
+		string_free(request->http_version);
+	}
+
+	if (request->location) {
+		string_free(request->location);
+	}
+
+	if (request->location_path) {
+		string_free(request->location_path);
+	}
+
+	free(request);
+}