config options reorganised. More robust config parser.

README.md

@@ -1,23 +1,23 @@
-## binit -- minimal pastebin-like in 100 lines of golang
+## binit -- minimal pastebin-like in golang
 
 That's just it. Preliminary version of a minimal, no-fuss
 pastebin-like service in golang. 
 
-Needs a folder "pastes/" to exist on the same dir where the program is
-run from. At the moment, it binds on `localhost:8000` and serves
-pastes in the format:
+It serves pastes in the format:
 
-    localhost:8000/abcdef1234567890
+    mypasteserver.org/abcdef1234567890
 
-The unique ID of a paste is obtained from the SHA256 of the
-concatenation of title, time, and content. Rendering is minimal, but
-can be enhanced. 
+and stores them in a folder, one file per paste, whose filename is
+equal to the paste ID. The unique ID of a paste is obtained from the
+SHA256 of the concatenation of title, time, and content. Rendering is
+minimal, but can be enhanced.
 
 `binit` is currently configured through a simple key=value
 configuration file. The available options are:
 
-* host (the hostname to listen on)
-* port (the port to bind)
+* server\_name  (the FQDN where the service is reachable from outside)
+* bind\_addr (the address to listen on)
+* bind\_port (the port to bind)
 * paste\_dir (the folder where pastes are kept)
 * templ\_dir (the folder where HTML files and templates are kept)
 * max_size (the maximum allowed length of a paste, in bytes. Larger
@@ -26,4 +26,4 @@ configuration file. The available options are:
 
 ### TODO
 
-* Add a simple template system
+* reorganise the code for paste storage/retrieve

binit.cfg

@@ -2,11 +2,14 @@
 ## These are comments
 ##
 
-## host/IP
-host=localhost
+## Server name
+server_name=localhost:8080
+
+## Bind address
+bind_addr = 127.0.0.1
 
 ## Port number
-port=8080
+bind_port=8080
 
 ## Directory where all pastes are kept
 paste_dir=./pastes

config.go

@@ -12,8 +12,9 @@ import (
 
 
 type Config struct {
-	host string
-	port string
+	server_name string
+	bind_addr string 
+	bind_port string
 	paste_dir string
 	templ_dir string
 	log_fname string
@@ -25,8 +26,8 @@ func (c Config) String() string {
 
 	var s string
 
-	s+= "Host: " + c.host + "\n"
-	s+= "Port: " + c.port + "\n"
+	s+= "Server name: " + c.server_name + "\n"
+	s+= "Listening on: " + c.bind_addr + ":" + c.bind_port +"\n"
 	s+= "paste_dir: " + c.paste_dir + "\n"
 	s+= "templ_dir: " + c.templ_dir + "\n"
 	s+= "log_fname: " + c.log_fname + "\n"
@@ -54,20 +55,22 @@ func parse_config (fname string, c *Config) error {
 			// it's not a blank line
 			if matched, _ := regexp.MatchString("^#", s); matched != true  {
 				// This is not a comment...
-				if matched, _ := regexp.MatchString("^([a-z_]+)=.*", s);  matched == true {
+				if matched, _ := regexp.MatchString("^([a-z_ ]+)=.*", s);  matched == true {
 					// and contains an assignment
 					fields := strings.Split(s, "=")
-					switch fields[0]{
-					case "host":
-						c.host = fields[1]
-					case "port":
-						c.port = fields[1]
+					switch strings.Trim(fields[0], " \t\""){
+					case "server_name":
+						c.server_name = strings.Trim(fields[1], " \t\"")
+					case "bind_addr":
+						c.bind_addr = strings.Trim(fields[1], " \t\"")
+					case "bind_port":
+						c.bind_port = strings.Trim(fields[1], " \t\"")
 					case "paste_dir":
-						c.paste_dir = fields[1]					
+						c.paste_dir = strings.Trim(fields[1], " \t\"")
 					case "templ_dir":
-						c.templ_dir = fields[1]
+						c.templ_dir = strings.Trim(fields[1], " \t\"")
 					case "log_fname":
-						c.log_fname = fields[1]
+						c.log_fname = strings.Trim(fields[1], " \t\"")
 					case "max_size":
 						if m_size, err := strconv.ParseUint(fields[1], 10, 16); err == nil {
 							c.max_size = uint16(m_size)

main.go

@@ -14,8 +14,9 @@ import (
 
 
 var p_conf = Config{
-	host: "localhost",
-	port: "8000",
+	server_name: "localhost",
+	bind_addr: "0.0.0.0",
+	bind_port: "8000",
 	paste_dir: "./pastes",
 	templ_dir: "./tmpl",
 	log_fname: "./binit.log",
@@ -108,13 +109,14 @@ func handle_put_paste(w http.ResponseWriter, r *http.Request) {
 				if err := ioutil.WriteFile(paste_dir+ paste_name, []byte(content), 0644); err == nil {
 					// and then we return the URL:
 					log.Printf("  `-- saving paste to : %s", paste_dir + paste_name)
-					hostname := r.Host
+					//hostname := r.Host
+					hostname := p_conf.server_name
 					if show := req_body.Get("show"); show != "1" {
 						fmt.Fprintf(w, "%s/%s", hostname, paste_name)
 						return
 					} else{
-						fmt.Fprintf(w, "<html><body>Link: <a href='%s'>%s</a></body></html>",
-							paste_hash[i:i+16], paste_hash[i:i+16])
+						fmt.Fprintf(w, "<html><body>Link: <a href='http://%s/%s'>http://%s/%s</a></body></html>",
+							hostname, paste_hash[i:i+16], hostname, paste_hash[i:i+16])
 						return
 					}
 				} else {
@@ -158,12 +160,13 @@ func main() {
 	log.SetFlags(log.Ldate | log.Ltime | log.Lmicroseconds)
 
 	log.Println("Binit version 0.1 -- Starting ")
-	log.Printf("  + listening on: %s:%s\n", p_conf.host, p_conf.port )
+	log.Printf("  + Serving pastes on: %s\n", p_conf.server_name)
+	log.Printf("  + listening on: %s:%s\n", p_conf.bind_addr, p_conf.bind_port )
 	log.Printf("  + paste_dir: %s\n", p_conf.paste_dir)
 	log.Printf("  + templ_dir: %s\n", p_conf.templ_dir)
 	log.Printf("  + max_size: %d\n", p_conf.max_size)
 
 	
 	http.HandleFunc("/", req_handler)
-	log.Fatal(http.ListenAndServe(p_conf.host + ":" +  p_conf.port, nil))
+	log.Fatal(http.ListenAndServe(p_conf.bind_addr + ":" +  p_conf.bind_port, nil))
 }