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1 /*
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2 server.go : server-program.
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12
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3 Version : 1.3
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13
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4 Last Change: 2018-11-14 水 17:03:30.
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0
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5
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6 install to: server_root/
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7
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8 server_root/server
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9 + db/
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10 + release/
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11 + images/
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12 */
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13 package main
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14
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15 import(
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16 "path/filepath"
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17 "fmt"
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18 "io"
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19 "log"
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20 "net"
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21 "net/http"
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22 "os"
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3
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23 "time"
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0
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24 )
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25
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8
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26 var (
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27 version string
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28 server string
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29 port string
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30 server_root string
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31 logfile string
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32 )
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3
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33
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34 func init() {
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12
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35 version = "1.3" // manage-db version
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3
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36 port = ":3910"
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37 server_root = filepath.Dir( os.Args[0] )
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8
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38 logfile = filepath.Join( server_root, "rsearcher.log" )
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3
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39 }
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40
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0
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41 func main() {
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42
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3
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43 // setting IP-Address & Port
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44 addrs, err := net.InterfaceAddrs()
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45 if err != nil {
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46 log.Fatal( err )
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47 }
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48 for _, a := range addrs {
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49 if ipnet, ok := a.( *net.IPNet ); ok && !ipnet.IP.IsLoopback() {
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50 if ipnet.IP.To4() != nil {
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51 server = ipnet.IP.String() + port
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52 }
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53 }
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54 }
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55
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3
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56 // start Web-server
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4
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57 fmt.Println( "server start [", server, "] ( program version", version, ")" )
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13
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58 http.HandleFunc( "/", handler )
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59 http.HandleFunc( "/upload/", upload_handler )
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60 http.HandleFunc( "/mngdb/", mngdb_handler )
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0
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61 log.Fatal( http.ListenAndServe( server, nil ) )
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62 }
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63
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3
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64 func handler( w http.ResponseWriter, r *http.Request ) {
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65 file := filepath.Join( server_root, filepath.FromSlash( r.URL.Path ) )
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8
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66
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3
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67 fmt.Println( "[access]", r.RemoteAddr, "|", time.Now().Format( "2006-01-02 15:04" ), "|", file )
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68 write_log( "[access] " + r.RemoteAddr + " " + file )
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69
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3
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70 f, err := os.Open( file )
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71 if err != nil {
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72 http.NotFound( w, r )
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73 return
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74 }
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75 defer f.Close()
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8
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76
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77 fi, _ := f.Stat()
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78
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79 w.Header().Set( "Content-Type", "rsearcher/octet-stream" )
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80 w.Header().Set( "Content-Length", fmt.Sprintf( "%d", fi.Size() ) )
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3
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81 io.Copy( w, f )
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82 }
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4
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83
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84 func upload_handler( w http.ResponseWriter, r *http.Request ) {
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85 fmt.Println( "[access]", r.RemoteAddr, "|", time.Now().Format( "2006-01-02 15:04" ), "|", "/upload" )
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86 now := time.Now().Format( "20060102_150405" )
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87 file := filepath.Join( server_root, "upload", now )
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88 f, err := os.Create( file )
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89 if err != nil {
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90 http.NotFound( w, r )
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91 return
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92 }
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93 n, err := io.Copy( f, r.Body )
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94 if err != nil {
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95 http.NotFound( w, r )
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96 return
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97 }
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98 f.Close()
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99 w.Write( []byte( fmt.Sprintf( "%d bytes are recieved.\n", n ) ) )
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100 }
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101
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12
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102 func mngdb_handler( w http.ResponseWriter, r *http.Request ) {
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103 fmt.Println( "[access]", r.RemoteAddr, "|", time.Now().Format( "2006-01-02 15:04" ), "|", "/mngdb" )
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104 write_log( "[access] " + r.RemoteAddr + "manage-db" )
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105 db := r.URL.Path[ len( "/mngdb/" ): ]
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106
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107 file := filepath.Join( server_root, "db", db )
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108
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109 f, err := os.Create( file )
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110 if err != nil {
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111 http.NotFound( w, r )
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112 return
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113 }
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114 _, err = io.Copy( f, r.Body )
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115 if err != nil {
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116 http.NotFound( w, r )
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117 return
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118 }
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119 f.Close()
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120 }
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121
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8
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122 func write_log( msg string ) {
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123 f, err := os.OpenFile( logfile, os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0644 )
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124 if err != nil {
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125 log.Fatal( err )
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126 }
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127 defer f.Close()
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128
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129 logger := log.New( f, "", log.LstdFlags )
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130 logger.Println( msg )
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131 }
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132
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