[server-connections] Moved on-connection logic outside server.c

1 files changed, 76 insertions, 0 deletions

diff --git a/server-connection.c b/server-connection.c
new file mode 100644
index 0000000..f0ac1e6
--- /dev/null
+++ b/server-connection.c
@@ -0,0 +1,76 @@
+#include <server-connection.h>
+
+#include <stdio.h>
+#include <unistd.h>
+#include <fcntl.h>
+
+#include <string.h>
+
+sds constructFilePath(const sds root, const char* file) {
+	sds path = sdsdup(root);
+	if (root[sdslen(root)-1] != '/' && file[0] != '/')
+		path = sdscat(path, "/");
+	path = sdscat(path, file);
+	if (file[strlen(file)-1] == '/')
+		path = sdscat(path, "index.md");
+	return path;
+}
+
+void on_connection(const char* client, const int fd_client, sds **vhosts, const int vhostsc) {
+	printf("[%s@%d] Connected successfully!\n", client, fd_client);
+
+	/* Get address request */
+	char address[256];
+	memset(address, 0, 256);
+
+	read(fd_client, address, 256);
+	printf("[%s@%d] Requested %s\n", client, fd_client, address);
+
+	/* Does vhosts contain an address with the username? */
+	int usernameLen = strchr(address, '@') - address;
+
+	const sds *vhost = NULL;
+	for (int i = 0; i < vhostsc; i++) {
+		if (strncmp(vhosts[i][vh_user], address, usernameLen) == 0) {
+			vhost = *vhosts + i;
+			break;
+		}
+	}
+
+	if (vhost == NULL) {
+		fprintf(stderr, "[%s@%d] Unknown username in address %s\n", client, fd_client, address);
+		return;
+	}
+
+	/* Try to open the requested file or the error file */
+	sds filePath = constructFilePath(vhost[vh_path], address + usernameLen + 1);
+
+	int fd = open(filePath, O_RDONLY);
+	if (fd < 0) {
+		fprintf(stderr, "[%s@%d] Error opening %s\n", client, fd_client, filePath);
+
+		sdsfree(filePath);
+		filePath = constructFilePath(vhost[vh_path], vhost[vh_error]);
+		fd = open(filePath, O_RDONLY);
+		if (fd < 0) {
+			fprintf(stderr, "[%s@%d] Error opening %s\n", client, fd_client, filePath);
+			sdsfree(filePath);
+			return;
+		}
+	}
+
+	/* Send the file to the client */
+	printf("[%s@%d] Serving %s\n", client, fd_client, filePath);
+	sdsfree(filePath);
+
+	char buff[256];
+	memset(buff, 0, sizeof(buff));
+	while (read(fd, buff, 256)) {
+		write(fd_client, buff, strlen(buff));
+		memset(buff, 0, sizeof(buff));
+	}
+
+	/* Finalize */
+	close(fd);
+	printf("[%s@%d] Served!\n", client, fd_client);
+}