citadel/whobbs.c

   1 /*
   2  * $Id$
   3  *
   4  * Command-line "who is online?" utility
   5  *
   6  */
   7
   8 #include "sysdep.h"
   9 #include <stdlib.h>
  10 #include <unistd.h>
  11 #include <stdio.h>
  12 #include <string.h>
  13 #include <errno.h>
  14 #include <libcitadel.h>
  15 #include "citadel.h"
  16 #include "citadel_ipc.h"
  17 #include "citadel_dirs.h"
  18
  19 void logoff(int code)
  20 {
  21         exit(code);
  22         }
  23
  24 static void escapize(char *buf, size_t n) {
  25         char hold[512];
  26         int i, len;
  27         size_t tmp;
  28
  29         strcpy(hold, buf);
  30         strcpy(buf, "");
  31         tmp = 0;
  32         len = strlen(hold);
  33         for (i=0; i<len; ++i) {
  34                 if (hold[i]=='<') {
  35                         snprintf(&buf[tmp], n - tmp, "&lt;");
  36                         tmp += 4;
  37                 }
  38                 else if (hold[i]=='>'){
  39                         snprintf(&buf[tmp], n - tmp, "&gt;");
  40                         tmp += 4;
  41                 }
  42                 else if (hold[i]==34){
  43                         snprintf(&buf[tmp], n - tmp, "&quot;");
  44                         tmp += 6;
  45                 }
  46                 else{
  47                         snprintf(&buf[tmp], n - tmp, "%c", hold[i]);
  48                         tmp ++;
  49                 }
  50         }
  51 }
  52
  53
  54
  55
  56 int main(int argc, char **argv)
  57 {
  58         char buf[512];
  59         char nodetitle[SIZ];
  60         int www = 0;
  61         int s_pid = 0;
  62         int my_pid = 0;
  63         char hostbuf[SIZ];
  64         char portbuf[SIZ];
  65         char s_user[SIZ];
  66         char s_room[SIZ];
  67         char s_host[SIZ];
  68         char s_client[SIZ];
  69         int r;                  /* IPC response code */
  70         time_t timenow;
  71         char *listing = NULL;
  72         CtdlIPC *ipc = NULL;
  73         int relh=0;
  74         int home=0;
  75         char relhome[PATH_MAX]="";
  76         char ctdldir[PATH_MAX]=CTDLDIR;
  77
  78         calc_dirs_n_files(relh, home, relhome, ctdldir, 0);
  79
  80         /* If this environment variable is set, we assume that the program
  81          * is being called as a cgi-bin from a webserver and will output
  82          * everything as HTML.
  83          */
  84         if (getenv("REQUEST_METHOD") != NULL) www = 1;
  85
  86         ipc = CtdlIPC_new(argc, argv, hostbuf, portbuf);
  87         if (!ipc) {
  88                 fprintf(stderr, "Server not available: %s\n", strerror(errno));
  89                 logoff(errno);
  90         }
  91         CtdlIPC_chat_recv(ipc, buf);
  92         if ((buf[0]!='2')&&(strncmp(buf,"551",3))) {
  93                 fprintf(stderr,"%s: %s\n",argv[0],&buf[4]);
  94                 logoff(atoi(buf));
  95                 }
  96         strcpy(nodetitle, "this Citadel site");
  97         r = CtdlIPCServerInfo(ipc, buf);
  98         if (r / 100 == 1) {
  99                 my_pid = ipc->ServInfo.pid;
 100                 strcpy(nodetitle, ipc->ServInfo.humannode);
 101         }
 102
 103         if (www) {
 104                 printf( "Content-type: text/html\n"
 105                         "\n"
 106                         "<HTML><HEAD>"
 107                         "<META HTTP-EQUIV=\"Refresh\" CONTENT=\"60\">\n"
 108                         "<TITLE>");
 109                 printf("%s: who is online", nodetitle);
 110                 printf( "</TITLE></HEAD><BODY><H1>");
 111         } else {
 112                 printf("            ");
 113         }
 114
 115         if (www) {
 116                 printf("<CENTER><H1>");
 117         }
 118
 119         printf("Users currently logged on to %s\n", nodetitle);
 120
 121         if (www) {
 122                 printf("</H1>\n");
 123         }
 124
 125         r = CtdlIPCOnlineUsers(ipc, &listing, &timenow, buf);
 126         if (r / 100 != 1) {
 127                 fprintf(stderr,"%s: %s\n",argv[0], buf);
 128                 logoff(atoi(buf));
 129         }
 130
 131         if (www) {
 132                 printf( "<TABLE BORDER=1 WIDTH=100%%>"
 133                         "<TR><TH>Session</TH><TH>User name</TH>"
 134                         "<TH>Room</TH><TH>From host</TH>"
 135                         "<TH>Client software</TH></TR>\n");
 136         } else {
 137
 138                 printf( "Session         User name               "
 139                         "Room                  From host\n");
 140                 printf( "------- ------------------------- "
 141                         "------------------- ------------------------\n");
 142         }
 143
 144
 145         while (!IsEmptyStr(listing)) {
 146                 extract_token(buf, listing, 0, '\n', sizeof buf);
 147                 remove_token(listing, 0, '\n');
 148
 149                 /* Escape some stuff if we're using www mode */
 150                 if (www) escapize(buf, sizeof buf);
 151
 152                 s_pid = extract_int(buf,0);
 153                 extract_token(s_user, buf, 1, '|', sizeof s_user);
 154                 extract_token(s_room, buf, 2, '|', sizeof s_room);
 155                 extract_token(s_host, buf, 3, '|', sizeof s_host);
 156                 extract_token(s_client, buf, 4, '|', sizeof s_client);
 157                 if (s_pid != my_pid) {
 158
 159                         if (www) printf("<TR><TD>");
 160                         printf("%-7d", s_pid);
 161                         printf("%c",
 162                                 ((s_pid == my_pid) ? '*' : ' '));
 163                         if (www) printf("</TD><TD>");
 164                         printf("%-26s", s_user);
 165                         if (www) printf("</TD><TD>");
 166                         printf("%-19s ", s_room);
 167                         if (www) printf("</TD><TD>");
 168                         printf("%-24s\n", s_host);
 169                         if (www) printf("</TD><TD>%s</TD></TR>\n", s_client);
 170                         }
 171                 }
 172         free(listing);
 173
 174         if (www) printf("</TABLE></CENTER>\n"
 175                         "<FONT SIZE=-1>"
 176                         "(This display will automatically refresh "
 177                         "once per minute)</FONT>\n"
 178                         "</BODY></HTML>\n");
 179
 180         r = CtdlIPCQuit(ipc);
 181         return (r / 100 == 2) ? 0 : r;
 182 }
 183
 184
 185 /*
 186  * Stub function
 187  */
 188 void stty_ctdl(int cmd) {
 189 }
 190
 191
 192 #ifndef HAVE_STRERROR
 193 /*
 194  * replacement strerror() for systems that don't have it
 195  */
 196 char *strerror(int e)
 197 {
 198         static char buf[32];
 199
 200         snprintf(buf, sizeof buf, "errno = %d",e);
 201         return(buf);
 202         }
 203 #endif