From 0af046784fb92acfbcbefdfe218eeaa438c0ef16 Mon Sep 17 00:00:00 2001
From: erinn <erinn.atwater@uwaterloo.ca>
Date: Tue, 9 Oct 2018 18:23:27 -0700
Subject: [PATCH] initial commit

---
 README.md |  5 +++++
 main.go   | 40 +++++++++++++++++++++++++++++++---------
 2 files changed, 36 insertions(+), 9 deletions(-)

diff --git a/README.md b/README.md
index 7b3ad71..e1200ee 100644
--- a/README.md
+++ b/README.md
@@ -23,6 +23,11 @@ activate the receiver first:
 then the sender:
 `sendafriend send [made-up-name] < file.ext`
 
+## manage multiple identities
+
+to have multiple addresses and contact lists, create a directory to hold them and prefix commands like so:
+env SENDAFRIEND_FOLDER=$HOME/bob sendafriend info
+
 ## <3
 
 made with love by errorinn
\ No newline at end of file
diff --git a/main.go b/main.go
index fefb511..e3e0a11 100644
--- a/main.go
+++ b/main.go
@@ -6,11 +6,11 @@ import (
 	libpeer "cwtch.im/cwtch/peer"
 	"fmt"
 	"github.com/sethvargo/go-diceware/diceware"
-	"io/ioutil"
-	"log"
-	"math/big"
+		"math/big"
 	"os"
 	"time"
+	"path"
+	"os/user"
 )
 
 func driftoff() {
@@ -45,16 +45,35 @@ func main() {
 		os.Exit(1)
 	}
 
-	log.SetFlags(0)
-	log.SetOutput(ioutil.Discard)
+	//log.SetFlags(0)
+	//log.SetOutput(ioutil.Discard)
+
+	// this is a cwtch server used only to make the "pair" command work
+	// it is completely untrusted and only blinded information is passed through it
+	// it can point to any ol cwtch group, as long as both people running "pair" are using the same one
 	inviteStr := "torv30I0zJgNiUz57gJlxFsp4PUq47WDoKNCL95GEadaLlEE=EsABCiA4MjViZTVjODU0ZDFhNGRhNjM3NmExNTBlYjM2ZjM2NxIgPAl3zAsMfauSZQyiGXlj7u6M6usYN/HqtPD2jafjwTAaOGloZDNlYXdhbjZ2aG1kaDdudDVicXh5aHVlM2k0aXgzb3kyZWZrcHdkaDZyNGptcTNhZXJ0dWlkIkDhF3Ko8nAtEJPvjpCjwFM4py0CeAhYCTc9l9H+Wah8traU15D/JzIHEAKhaDiIzmKqBOECk9Q+G40Y6pXPWKkI"
 
-	peer, err := libpeer.LoadCwtchPeer("Whoami", "be gay do crime")
+	var dirname, filename string
+	if os.Getenv("SENDAFRIEND_FOLDER") != "" {
+		dirname = os.Getenv("SENDAFRIEND_FOLDER")
+		filename = path.Join(dirname, "identity.private")
+	} else {
+		usr, err := user.Current()
+		if err != nil {
+			fmt.Printf("\nerror: could not load current user: %v\n", err)
+			os.Exit(1)
+		}
+		dirname = path.Join(usr.HomeDir, ".sendafriend")
+		filename = path.Join(dirname, "identity.private")
+	}
+
+	os.MkdirAll(dirname, 0700)
+	peer, err := libpeer.LoadCwtchPeer(filename, "be gay do crime")
 	if err != nil {
-		fmt.Println("couldn't load your Whoami file, attempting to create a new one now")
+		fmt.Println("couldn't load your config file, attempting to create a new one now")
 
 		names, err := diceware.Generate(1)
-		peer, err = libpeer.NewCwtchPeer(names[0], "be gay do crime", "Whoami")
+		peer, err = libpeer.NewCwtchPeer(names[0], "be gay do crime", filename)
 		if err != nil {
 			fmt.Println("couldn't create one either :( exiting")
 			os.Exit(1)
@@ -137,7 +156,10 @@ func main() {
 		reader := bufio.NewReader(os.Stdin)
 		packet := make([]byte, 65531)
 		br, _ := reader.Read(packet)
-
+		if br > 65530 {
+			fmt.Printf("sorry but i can't send more than 65530 bytes at once right now :( errorinn is working on it!\n")
+			os.Exit(1)
+		}
 		connection.SendPacket(packet[:br])
 	case "receive":
 		if len(os.Args) != 3 {