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         {       "who",          cmd_who,        "Display a list of online users"        },
  32         {       "shutdown",     cmd_shutdown,   "Shut down the Citadel server"          },
  33         {       NULL,           NULL,           NULL                                    }
  34 };
  35
  36
  37 int cmd_help(int sock, char *cmdbuf) {
  38         int i;
  39
  40         for (i=0; commands[i].func != NULL; ++i) {
  41                 printf("%-10s %s\n", commands[i].name, commands[i].doc);
  42         }
  43 }
  44
  45
  46 /* Auto-completer function */
  47 char *command_generator(const char *text, int state) {
  48         static int list_index;
  49         static int len;
  50         char *name;
  51
  52         if (!state) {
  53                 list_index = 0;
  54                 len = strlen(text);
  55         }
  56
  57         while (name = commands[list_index].name) {
  58                 ++list_index;
  59
  60                 if (!strncmp(name, text, len)) {
  61                         return(strdup(name));
  62                 }
  63         }
  64
  65         return(NULL);
  66 }
  67
  68
  69 /* Auto-completer function */
  70 char **ctdlsh_completion(const char *text, int start, int end) {
  71         char **matches = (char **) NULL;
  72
  73         if (start == 0) {
  74                 matches = rl_completion_matches(text, command_generator);
  75         }
  76         else {
  77                 rl_bind_key('\t', rl_abort);
  78         }
  79
  80         return (matches);
  81 }
  82
  83
  84 void do_main_loop(int server_socket) {
  85         char *cmd = NULL;
  86         char prompt[1024];
  87         char buf[1024];
  88         char server_reply[1024];
  89         int i;
  90         int ret = (-1);
  91
  92         strcpy(prompt, "> ");
  93
  94         /* Do an INFO command and learn the hostname for the prompt */
  95         sock_puts(server_socket, "INFO");
  96         sock_getln(server_socket, buf, sizeof buf);
  97         if (buf[0] == '1') {
  98                 i = 0;
  99                 while(sock_getln(server_socket, buf, sizeof buf), strcmp(buf, "000")) {
 100                         if (i == 1) {
 101                                 sprintf(prompt, "\n%s> ", buf);
 102                         }
 103                         ++i;
 104                 }
 105         }
 106
 107         /* Tell libreadline how we will help with auto-completion of commands */
 108         rl_attempted_completion_function = ctdlsh_completion;
 109
 110         /* Here we go ... main command loop */
 111         while ((ret != cmdret_exit) && (cmd = readline(prompt))) {
 112
 113                 if ((cmd) && (*cmd)) {
 114                         add_history(cmd);
 115
 116                         for (i=0; commands[i].func != NULL; ++i) {
 117                                 if (!strncasecmp(cmd, commands[i].name, strlen(commands[i].name))) {
 118                                         ret = (*commands[i].func) (server_socket, cmd);
 119                                 }
 120                         }
 121
 122                 }
 123
 124                 free(cmd);
 125         }
 126 }
 127
 128
 129 /*
 130  * If you don't know what main() does by now you probably shouldn't be reading this code.
 131  */
 132 int main(int argc, char **argv)
 133 {
 134         int server_socket = 0;
 135         char buf[1024];
 136         int c;
 137         char *ctdldir = CTDLDIR;
 138
 139         printf("\nCitadel administration shell v" PACKAGE_VERSION " (c) 2009-2012 by citadel.org\n"
 140                 "This is open source software made available to you under the terms\n"
 141                 "of the GNU General Public License v3.  All other rights reserved.\n"
 142         );
 143
 144         opterr = 0;
 145         while ((c = getopt (argc, argv, "h:")) != -1) {
 146                 switch(c) {
 147                 case 'h':
 148                         ctdldir = optarg;
 149                         break;
 150                 case '?':
 151                         if (optopt == 'h') {
 152                                 fprintf(stderr, "Option -%c requires an argument\n", optopt);
 153                         }
 154                         else {
 155                                 fprintf(stderr, "Unknown option '-%c'\n", optopt);
 156                                 fprintf(stderr, "usage: %s [-h citadel_dir]\n", argv[0]);
 157                         }
 158                         exit(1);
 159                 }
 160         }
 161
 162         printf("Trying %s...\n", ctdldir);
 163         sprintf(buf, "%s/citadel-admin.socket", ctdldir);
 164         server_socket = uds_connectsock(buf);
 165         if (server_socket < 0) {
 166                 exit(1);
 167         }
 168
 169         sock_getln(server_socket, buf, sizeof buf);
 170         if (buf[0] == '2') {
 171                 do_main_loop(server_socket);
 172         }
 173
 174         sock_puts(server_socket, "QUIT");
 175         sock_getln(server_socket, buf, sizeof buf);
 176         printf("%s\n", buf);
 177         close(server_socket);
 178         exit(0);
 179 }