From 1c79bf5f79365739fd07f08e0d21e973537fc5ec Mon Sep 17 00:00:00 2001
From: nirav <nirav@teisuu.com>
Date: Sat, 21 Sep 2019 13:30:12 +0000
Subject: Add gph parser and client

---
 gopher.c | 113 ++++++++++++++++++++++++++++++++++++++++++++++++++++-----------
 1 file changed, 93 insertions(+), 20 deletions(-)

(limited to 'gopher.c')

diff --git a/gopher.c b/gopher.c
index c1cb2eb..32f1513 100644
--- a/gopher.c
+++ b/gopher.c
@@ -1,23 +1,18 @@
-#define _POSIX_C_SOURCE 200112L
-
 #include <sys/socket.h>
+#include <sys/types.h>
 
+#include <dirent.h>
 #include <stdio.h>
 #include <string.h>
+#include <stdlib.h>
 
 #include "log.h"
 
-static char *res = "1Entry 1	/entry1	localhost	3000\r\n\
-1Entry 2	/entry2	localhost	3000\r\n\
-1Entry 3	/entry3	localhost	3000\r\n\
-.";
-
-static char *res1 = "0SubEntry 1	/entry1	localhost	3000\r\n\
-0SubEntry 2	/entry2	localhost	3000\r\n\
-0SubEntry 3	/entry3	localhost	3000\r\n\
-.";
+#define GOPHERROOT "/tmp/gopherroot"
+#define GOPHERHOST "localhost"
+#define GOPHERPORT "70"
 
-static int 
+static int
 sendall(int fd, const char *buf, size_t len)
 {
 	size_t sent = 0;
@@ -35,22 +30,100 @@ sendall(int fd, const char *buf, size_t len)
 	return 0;
 }
 
-int 
+static int 
+print_indexfile(int fd, const char *path)
+{
+	FILE *f;
+	char buf[512];
+
+	f = fopen(path, "r");
+	if (f == NULL) {
+		perror("fopen");
+		return -1;
+	}
+	while (!feof(f)) {
+		if (fgets(buf, sizeof(buf), f) == NULL)
+			continue;
+		if (sendall(fd, buf, strlen(buf)) == -1) {
+			logmsg(LOG_INFO, "failed to send data");
+			return -1;
+			fclose(f);
+		}
+	}
+
+	fclose(f);
+	return 0;
+}
+
+static int 
+print_dir(int fd, const char *path)
+{
+	DIR *root;
+	struct dirent *node;
+	char *buf;
+	int type;
+	size_t buflen;
+
+	root = opendir(path);
+	if (root == NULL) {
+		perror("opendir");
+		return -1;
+	}
+	while ((node = readdir(root)) != NULL) {
+		buflen = sizeof(type) + strlen(node->d_name) + 
+			strlen(GOPHERROOT) + strlen(GOPHERHOST) + 
+			strlen(GOPHERPORT) + 6;
+		if ((buf = malloc(buflen)) == NULL) {
+			perror("malloc");
+			return -1;
+		}
+
+		switch (node->d_type) {
+		case 4:
+			type = 1;
+			break;
+		case 8:
+			type = 0;
+			break;
+		}
+
+		sprintf(buf, "%d%s	%s	%s	%s\r\n",
+		       type, node->d_name, GOPHERROOT, "localhost", "3000");
+		if (sendall(fd, buf, buflen) == -1) {
+			logmsg(LOG_INFO, "failed to send data");
+			free(buf);
+			return -1;
+		}
+		free(buf);
+	}
+
+	closedir(root);
+
+	return 0;
+}
+
+int
 handle_path(int fd, const char *path)
 {
 	const char *data;
 
 	if (strcmp(path, "") == 0 || strcmp(path, "/") == 0) {
-		data = res;
-	} else if (strcmp(path, "/entry1") == 0) {
-		data = res1;
+		if (print_indexfile(fd, "index.gph") == -1) {
+			logmsg(LOG_INFO, "failed to send data");
+			return -1;
+		}
+	} else if (strcmp(path, "/list") == 0) {
+		if (print_dir(fd, GOPHERROOT) == -1) {
+			logmsg(LOG_INFO, "failed to send data");
+			return -1;
+		}
 	} else {
 		data = "";
+		if (sendall(fd, data, strlen(data)) == -1) {
+			logmsg(LOG_INFO, "failed to send data");
+			return -1;
+		}
 	}
 
-	if (sendall(fd, data, strlen(data)) == -1) {
-		logmsg(LOG_INFO, "failed to send data");
-		return -1;
-	}
 	return 0;
 }
-- 
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