ctdlsh/src/main.c

   1 /*
   2  * (c) 2009-2012 by Art Cancro and citadel.org
   3  * This program is released under the terms of the GNU General Public License v3.
   4  */
   5
   6 #include "ctdlsh.h"
   7
   8
   9 int cmd_quit(int sock, char *cmdbuf) {
  10         return(cmdret_exit);
  11 }
  12
  13
  14 /*
  15  * Commands understood by ctdlsh
  16  */
  17 typedef struct {
  18         char *name;
  19         ctdlsh_cmdfunc_t *func;
  20         char *doc;
  21 } COMMAND;
  22
  23 COMMAND commands[] = {
  24         {       "?",            cmd_help,       "Display this message"                  },
  25         {       "help",         cmd_help,       "Display this message"                  },
  26         {       "quit",         cmd_quit,       "Quit using ctdlsh"                     },
  27         {       "exit",         cmd_quit,       "Quit using ctdlsh"                     },
  28         {       "date",         cmd_datetime,   "Print the server's date and time"      },
  29         {       "time",         cmd_datetime,   "Print the server's date and time"      },
  30         {       "passwd",       cmd_passwd,     "Set or change an account password"     },
  31         {       "shutdown",     cmd_shutdown,   "Shut down the Citadel server"          },
  32         {       NULL,           NULL,           NULL                                    }
  33 };
  34
  35
  36 int cmd_help(int sock, char *cmdbuf) {
  37         int i;
  38
  39         for (i=0; commands[i].func != NULL; ++i) {
  40                 printf("%-10s %s\n", commands[i].name, commands[i].doc);
  41         }
  42 }
  43
  44
  45 /* Auto-completer function */
  46 char *command_generator(const char *text, int state) {
  47         static int list_index;
  48         static int len;
  49         char *name;
  50
  51         if (!state) {
  52                 list_index = 0;
  53                 len = strlen(text);
  54         }
  55
  56         while (name = commands[list_index].name) {
  57                 ++list_index;
  58
  59                 if (!strncmp(name, text, len)) {
  60                         return(strdup(name));
  61                 }
  62         }
  63
  64         return(NULL);
  65 }
  66
  67
  68 /* Auto-completer function */
  69 char **ctdlsh_completion(const char *text, int start, int end) {
  70         char **matches = (char **) NULL;
  71
  72         if (start == 0) {
  73                 matches = rl_completion_matches(text, command_generator);
  74         }
  75         else {
  76                 rl_bind_key('\t', rl_abort);
  77         }
  78
  79         return (matches);
  80 }
  81
  82
  83 void do_main_loop(int server_socket) {
  84         char *cmd = NULL;
  85         char prompt[1024];
  86         char buf[1024];
  87         char server_reply[1024];
  88         int i;
  89         int ret = (-1);
  90
  91         strcpy(prompt, "> ");
  92
  93         /* Do an INFO command and learn the hostname for the prompt */
  94         sock_puts(server_socket, "INFO");
  95         sock_getln(server_socket, buf, sizeof buf);
  96         if (buf[0] == '1') {
  97                 i = 0;
  98                 while(sock_getln(server_socket, buf, sizeof buf), strcmp(buf, "000")) {
  99                         if (i == 1) {
 100                                 sprintf(prompt, "\n%s> ", buf);
 101                         }
 102                         ++i;
 103                 }
 104         }
 105
 106         /* Tell libreadline how we will help with auto-completion of commands */
 107         rl_attempted_completion_function = ctdlsh_completion;
 108
 109         /* Here we go ... main command loop */
 110         while ((ret != cmdret_exit) && (cmd = readline(prompt))) {
 111
 112                 if ((cmd) && (*cmd)) {
 113                         add_history(cmd);
 114
 115                         for (i=0; commands[i].func != NULL; ++i) {
 116                                 if (!strncasecmp(cmd, commands[i].name, strlen(commands[i].name))) {
 117                                         ret = (*commands[i].func) (server_socket, cmd);
 118                                 }
 119                         }
 120
 121                 }
 122
 123                 free(cmd);
 124         }
 125 }
 126
 127
 128 /*
 129  * If you don't know what main() does by now you probably shouldn't be reading this code.
 130  */
 131 int main(int argc, char **argv)
 132 {
 133         int server_socket = 0;
 134         char buf[1024];
 135         int c;
 136         char *ctdldir = CTDLDIR;
 137
 138         printf("\nCitadel administration shell v" PACKAGE_VERSION " (c) 2009-2012 by citadel.org\n"
 139                 "This is open source software made available to you under the terms\n"
 140                 "of the GNU General Public License v3.  All other rights reserved.\n"
 141         );
 142
 143         opterr = 0;
 144         while ((c = getopt (argc, argv, "h:")) != -1) {
 145                 switch(c) {
 146                 case 'h':
 147                         ctdldir = optarg;
 148                         break;
 149                 case '?':
 150                         if (optopt == 'h') {
 151                                 fprintf(stderr, "Option -%c requires an argument\n", optopt);
 152                         }
 153                         else {
 154                                 fprintf(stderr, "Unknown option '-%c'\n", optopt);
 155                                 fprintf(stderr, "usage: %s [-h citadel_dir]\n", argv[0]);
 156                         }
 157                         exit(1);
 158                 }
 159         }
 160
 161         printf("Trying %s...\n", ctdldir);
 162         sprintf(buf, "%s/citadel-admin.socket", ctdldir);
 163         server_socket = uds_connectsock(buf);
 164         if (server_socket < 0) {
 165                 exit(1);
 166         }
 167
 168         sock_getln(server_socket, buf, sizeof buf);
 169         if (buf[0] == '2') {
 170                 do_main_loop(server_socket);
 171         }
 172
 173         sock_puts(server_socket, "QUIT");
 174         sock_getln(server_socket, buf, sizeof buf);
 175         printf("%s\n", buf);
 176         close(server_socket);
 177         exit(0);
 178 }