ctdlsh/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         {       "date",         cmd_datetime,   "Print the server's date and time"      },
  27         {       "exit",         cmd_quit,       "Quit using ctdlsh"                     },
  28         {       "export",       cmd_export,     "Export all Citadel databases"          },
  29         {       "shutdown",     cmd_shutdown,   "Shut down the Citadel server"          },
  30         {       "time",         cmd_datetime,   "Print the server's date and time"      },
  31         {       "passwd",       cmd_passwd,     "Set or change an account password"     },
  32         {       "quit",         cmd_quit,       "Quit using ctdlsh"                     },
  33         {       "who",          cmd_who,        "Display a list of online users"        },
  34         {       NULL,           NULL,           NULL                                    }
  35 };
  36
  37
  38 int cmd_help(int sock, char *cmdbuf) {
  39         int i;
  40
  41         for (i=0; commands[i].func != NULL; ++i) {
  42                 printf("%-10s %s\n", commands[i].name, commands[i].doc);
  43         }
  44 }
  45
  46
  47 /* Auto-completer function */
  48 char *command_generator(const char *text, int state) {
  49         static int list_index;
  50         static int len;
  51         char *name;
  52
  53         if (!state) {
  54                 list_index = 0;
  55                 len = strlen(text);
  56         }
  57
  58         while (name = commands[list_index].name) {
  59                 ++list_index;
  60
  61                 if (!strncmp(name, text, len)) {
  62                         return(strdup(name));
  63                 }
  64         }
  65
  66         return(NULL);
  67 }
  68
  69
  70 /* Auto-completer function */
  71 char **ctdlsh_completion(const char *text, int start, int end) {
  72         char **matches = (char **) NULL;
  73
  74         if (start == 0) {
  75                 matches = rl_completion_matches(text, command_generator);
  76         }
  77         else {
  78                 rl_bind_key('\t', rl_abort);
  79         }
  80
  81         return (matches);
  82 }
  83
  84
  85 void do_main_loop(int server_socket) {
  86         char *cmd = NULL;
  87         char prompt[1024];
  88         char buf[1024];
  89         char server_reply[1024];
  90         int i;
  91         int ret = (-1);
  92
  93         strcpy(prompt, "> ");
  94
  95         /* Do an INFO command and learn the hostname for the prompt */
  96         sock_puts(server_socket, "INFO");
  97         sock_getln(server_socket, buf, sizeof buf);
  98         if (buf[0] == '1') {
  99                 i = 0;
 100                 while(sock_getln(server_socket, buf, sizeof buf), strcmp(buf, "000")) {
 101                         if (i == 1) {
 102                                 sprintf(prompt, "\n%s> ", buf);
 103                         }
 104                         ++i;
 105                 }
 106         }
 107
 108         /* Tell libreadline how we will help with auto-completion of commands */
 109         rl_attempted_completion_function = ctdlsh_completion;
 110
 111         /* Here we go ... main command loop */
 112         while ((ret != cmdret_exit) && (cmd = readline(prompt))) {
 113
 114                 if ((cmd) && (*cmd)) {
 115                         add_history(cmd);
 116
 117                         for (i=0; commands[i].func != NULL; ++i) {
 118                                 if (!strncasecmp(cmd, commands[i].name, strlen(commands[i].name))) {
 119                                         ret = (*commands[i].func) (server_socket, cmd);
 120                                 }
 121                         }
 122
 123                 }
 124
 125                 free(cmd);
 126         }
 127 }
 128
 129
 130 /*
 131  * If you don't know what main() does by now you probably shouldn't be reading this code.
 132  */
 133 int main(int argc, char **argv)
 134 {
 135         int server_socket = 0;
 136         char buf[1024];
 137         int c;
 138         char *ctdldir = CTDLDIR;
 139
 140         printf("\nCitadel administration shell (c) 2009-2016 by citadel.org\n"
 141                 "This is open source software made available to you under the terms\n"
 142                 "of the GNU General Public License v3.  All other rights reserved.\n"
 143         );
 144
 145         opterr = 0;
 146         while ((c = getopt (argc, argv, "h:")) != -1) {
 147                 switch(c) {
 148                 case 'h':
 149                         ctdldir = optarg;
 150                         break;
 151                 case '?':
 152                         if (optopt == 'h') {
 153                                 fprintf(stderr, "Option -%c requires an argument\n", optopt);
 154                         }
 155                         else {
 156                                 fprintf(stderr, "Unknown option '-%c'\n", optopt);
 157                                 fprintf(stderr, "usage: %s [-h citadel_dir]\n", argv[0]);
 158                         }
 159                         exit(1);
 160                 }
 161         }
 162
 163         printf("Trying %s...\n", ctdldir);
 164         sprintf(buf, "%s/citadel-admin.socket", ctdldir);
 165         server_socket = uds_connectsock(buf);
 166         if (server_socket < 0) {
 167                 exit(1);
 168         }
 169
 170         sock_getln(server_socket, buf, sizeof buf);
 171         if (buf[0] == '2') {
 172                 do_main_loop(server_socket);
 173         }
 174
 175         sock_puts(server_socket, "QUIT");
 176         sock_getln(server_socket, buf, sizeof buf);
 177         printf("%s\n", buf);
 178         close(server_socket);
 179         exit(0);
 180 }