ctdlsh/main.c

   1 /*
   2  * (c) 2009-2017 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         {       "config",       cmd_config,     "Configure the Citadel server"          },
  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         {       "who",          cmd_who,        "Display a list of online users"        },
  33         {       "exit",         cmd_quit,       "Quit using ctdlsh"                     },
  34         {       "quit",         cmd_quit,       "Quit using ctdlsh"                     },
  35         {       NULL,           NULL,           NULL                                    }
  36 };
  37
  38
  39 int cmd_help(int sock, char *cmdbuf) {
  40         int i;
  41
  42         for (i=0; commands[i].func != NULL; ++i) {
  43                 printf("%-10s %s\n", commands[i].name, commands[i].doc);
  44         }
  45 }
  46
  47
  48 /* Auto-completer function */
  49 char *command_generator(const char *text, int state) {
  50         static int list_index;
  51         static int len;
  52         char *name;
  53
  54         if (!state) {
  55                 list_index = 0;
  56                 len = strlen(text);
  57         }
  58
  59         while (name = commands[list_index].name) {
  60                 ++list_index;
  61
  62                 if (!strncmp(name, text, len)) {
  63                         return(strdup(name));
  64                 }
  65         }
  66
  67         return(NULL);
  68 }
  69
  70
  71 /* Auto-completer function */
  72 char **ctdlsh_completion(const char *text, int start, int end) {
  73         char **matches = (char **) NULL;
  74
  75         if (start == 0) {
  76                 matches = rl_completion_matches(text, command_generator);
  77         }
  78         else {
  79                 rl_bind_key('\t', rl_abort);
  80         }
  81
  82         return (matches);
  83 }
  84
  85
  86 int do_one_command(int server_socket, char *cmd) {
  87         int i;
  88         int ret;
  89         for (i=0; commands[i].func != NULL; ++i) {
  90                 if (!strncasecmp(cmd, commands[i].name, strlen(commands[i].name))) {
  91                         ret = (*commands[i].func) (server_socket, cmd);
  92                 }
  93         }
  94         return ret;
  95 }
  96
  97
  98 void do_main_loop(int server_socket) {
  99         char *cmd = NULL;
 100         char prompt[1024];
 101         char buf[1024];
 102         char server_reply[1024];
 103         int i;
 104         int ret = (-1);
 105
 106         strcpy(prompt, "> ");
 107
 108         /* Do an INFO command and learn the hostname for the prompt */
 109         sock_puts(server_socket, "INFO");
 110         sock_getln(server_socket, buf, sizeof buf);
 111         if (buf[0] == '1') {
 112                 i = 0;
 113                 while(sock_getln(server_socket, buf, sizeof buf), strcmp(buf, "000")) {
 114                         if (i == 1) {
 115                                 sprintf(prompt, "\n%s> ", buf);
 116                         }
 117                         ++i;
 118                 }
 119         }
 120
 121         /* Tell libreadline how we will help with auto-completion of commands */
 122         rl_attempted_completion_function = ctdlsh_completion;
 123
 124         /* Here we go ... main command loop */
 125         while ((ret != cmdret_exit) && (cmd = readline(prompt))) {
 126
 127                 if ((cmd) && (*cmd)) {
 128                         add_history(cmd);
 129                         ret = do_one_command(server_socket, cmd);
 130
 131                         //for (i=0; commands[i].func != NULL; ++i) {
 132                                 //if (!strncasecmp(cmd, commands[i].name, strlen(commands[i].name))) {
 133                                         //ret = (*commands[i].func) (server_socket, cmd);
 134                                 //}
 135                         //}
 136
 137                 }
 138
 139                 free(cmd);
 140         }
 141 }
 142
 143
 144 /*
 145  * If you don't know what main() does by now you probably shouldn't be reading this code.
 146  */
 147 int main(int argc, char **argv)
 148 {
 149         int server_socket = 0;
 150         char buf[1024];
 151         int i;
 152         char *ctdldir = CTDLDIR;
 153         char cmd[1024] = { 0 } ;
 154         int exitcode = 0;
 155
 156         for (i=1; i<argc; ++i) {
 157                 if (!strcmp(argv[i], "-h")) {
 158                         ctdldir = argv[++i];
 159                 }
 160                 else {
 161                         if (strlen(cmd) > 0) {
 162                                 strcat(cmd, " ");
 163                         }
 164                         strcat(cmd, argv[i]);
 165                 }
 166         }
 167
 168         int is_interactive = ((strlen(cmd) == 0) ? 1 : 0);
 169
 170         if (is_interactive) {
 171                 printf("\nCitadel administration shell (c) 2009-2017 by citadel.org\n"
 172                         "This is open source software made available to you under the terms\n"
 173                         "of the GNU General Public License v3.  All other rights reserved.\n"
 174                 );
 175                 printf("Trying %s...\n", ctdldir);
 176         }
 177
 178         sprintf(buf, "%s/citadel-admin.socket", ctdldir);
 179         server_socket = uds_connectsock(buf);
 180         if (server_socket < 0) {
 181                 exit(1);
 182         }
 183
 184         sock_getln(server_socket, buf, sizeof buf);
 185         if (buf[0] == '2') {
 186                 if (is_interactive) {
 187                         printf("Connected: %s\n", buf);
 188                         do_main_loop(server_socket);
 189                 }
 190                 else {
 191                         exitcode = do_one_command(server_socket, cmd);
 192                 }
 193         }
 194
 195         sock_puts(server_socket, "QUIT");
 196         sock_getln(server_socket, buf, sizeof buf);
 197         if (is_interactive) {
 198                 printf("%s\n", buf);
 199         }
 200         close(server_socket);
 201         exit(exitcode);
 202 }