[bd520203] | 1 | /***********************************************************/ |
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[b2712e3] | 2 | /* |
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[bd520203] | 3 | * |
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| 4 | * The telnet DAEMON |
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| 5 | * |
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| 6 | * Author: 17,may 2001 |
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| 7 | * |
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| 8 | * WORK: fernando.ruiz@ctv.es |
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| 9 | * HOME: correo@fernando-ruiz.com |
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| 10 | * |
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| 11 | * After start the net you can start this daemon. |
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| 12 | * It uses the previously inited pseudo-terminales (pty.c) |
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| 13 | * getting a new terminal with getpty(). This function |
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| 14 | * gives a terminal name passing a opened socket like parameter. |
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| 15 | * |
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| 16 | * With register_telnetd() you add a new command in the shell to start |
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| 17 | * this daemon interactively. (Login in /dev/console of course) |
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| 18 | * |
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| 19 | * Sorry but OOB is not still implemented. (This is the first version) |
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[b2712e3] | 20 | */ |
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[bd520203] | 21 | #ifdef HAVE_CONFIG_H |
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| 22 | #include "config.h" |
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| 23 | #endif |
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[b2712e3] | 24 | |
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| 25 | #include <rtems.h> |
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| 26 | #include <rtems/error.h> |
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[bd520203] | 27 | #include <rtems/pty.h> |
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[b2712e3] | 28 | #include <rtems/shell.h> |
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| 29 | #include <rtems/telnetd.h> |
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| 30 | #include <sys/socket.h> |
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| 31 | #include <netinet/in.h> |
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| 32 | #include <arpa/inet.h> |
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| 33 | #include <unistd.h> |
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| 34 | #include <stdlib.h> |
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[2129ac8] | 35 | #include <string.h> /* memset */ |
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[b2712e3] | 36 | #include <stdio.h> |
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| 37 | /***********************************************************/ |
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| 38 | rtems_id telnetd_task_id =0; |
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| 39 | rtems_unsigned32 telnetd_stack_size =16384; |
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| 40 | rtems_task_priority telnetd_task_priority=100; |
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| 41 | /***********************************************************/ |
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| 42 | rtems_task rtems_task_telnetd(rtems_task_argument task_argument) { |
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| 43 | int des_socket, |
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| 44 | acp_socket; |
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| 45 | struct sockaddr_in srv; |
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| 46 | char * devname; |
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| 47 | int i=1; |
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| 48 | int size_adr; |
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| 49 | if ((des_socket=socket(PF_INET,SOCK_STREAM,0))<0) { |
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[bd520203] | 50 | perror("telnetd:socket"); |
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[b2712e3] | 51 | rtems_task_delete(RTEMS_SELF); |
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| 52 | }; |
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| 53 | setsockopt(des_socket,SOL_SOCKET,0,&i,sizeof(i)); |
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| 54 | memset(&srv,0,sizeof(srv)); |
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| 55 | srv.sin_family=AF_INET; |
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| 56 | srv.sin_port=htons(23); |
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| 57 | size_adr=sizeof(srv); |
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| 58 | if ((bind(des_socket,(struct sockaddr *)&srv,size_adr))<0) { |
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[bd520203] | 59 | perror("telnetd:bind"); |
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[b2712e3] | 60 | close(des_socket); |
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| 61 | rtems_task_delete(RTEMS_SELF); |
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| 62 | }; |
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| 63 | if ((listen(des_socket,5))<0) { |
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[bd520203] | 64 | perror("telnetd:listen"); |
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[b2712e3] | 65 | close(des_socket); |
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| 66 | rtems_task_delete(RTEMS_SELF); |
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| 67 | }; |
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| 68 | do { |
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| 69 | acp_socket=accept(des_socket,(struct sockaddr*)&srv,&size_adr); |
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| 70 | if (acp_socket<0) { |
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[bd520203] | 71 | perror("telnetd:accept"); |
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[b2712e3] | 72 | break; |
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| 73 | }; |
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[bd520203] | 74 | if ((devname = get_pty(acp_socket)) ) { |
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[b2712e3] | 75 | shell_init(&devname[5], |
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| 76 | telnetd_stack_size, |
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| 77 | telnetd_task_priority, |
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| 78 | devname,B9600|CS8,FALSE); |
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| 79 | } else { |
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| 80 | close(acp_socket); |
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| 81 | }; |
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| 82 | } while(1); |
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| 83 | close(des_socket); |
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| 84 | rtems_task_delete(RTEMS_SELF); |
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| 85 | } |
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| 86 | /***********************************************************/ |
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| 87 | int rtems_initialize_telnetd(void) { |
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[bd520203] | 88 | void register_icmds(void); |
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[b2712e3] | 89 | rtems_status_code sc; |
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[bd520203] | 90 | |
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| 91 | register_icmds(); /* stats for tcp/ip */ |
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| 92 | |
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[b2712e3] | 93 | if (telnetd_task_id ) return RTEMS_RESOURCE_IN_USE; |
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| 94 | if (telnetd_stack_size<=0 ) telnetd_stack_size =16384; |
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| 95 | if (telnetd_task_priority<=2) telnetd_task_priority=100; |
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[bd520203] | 96 | sc=rtems_task_create(new_rtems_name("tlnd"), |
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[b2712e3] | 97 | 100,RTEMS_MINIMUM_STACK_SIZE, |
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| 98 | RTEMS_DEFAULT_MODES, |
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| 99 | RTEMS_DEFAULT_ATTRIBUTES, |
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| 100 | &telnetd_task_id); |
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| 101 | if (sc!=RTEMS_SUCCESSFUL) { |
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| 102 | rtems_error(sc,"creating task telnetd"); |
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| 103 | return (int)sc; |
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| 104 | }; |
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| 105 | sc=rtems_task_start(telnetd_task_id, |
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| 106 | rtems_task_telnetd, |
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| 107 | (rtems_task_argument)NULL); |
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| 108 | if (sc!=RTEMS_SUCCESSFUL) { |
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| 109 | rtems_error(sc,"starting task telnetd"); |
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| 110 | }; |
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| 111 | return (int)sc; |
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| 112 | } |
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| 113 | /***********************************************************/ |
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| 114 | int main_telnetd(int argc,char * argv[]) { |
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| 115 | rtems_status_code sc; |
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| 116 | if (telnetd_task_id) { |
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| 117 | printf("ERROR:telnetd already started\n"); |
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| 118 | return 1; |
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| 119 | }; |
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| 120 | if (argc>1) telnetd_stack_size =str2int(argv[1]); |
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| 121 | if (argc>2) telnetd_task_priority=str2int(argv[2]); |
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| 122 | sc=rtems_initialize_telnetd(); |
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| 123 | if (sc!=RTEMS_SUCCESSFUL) return sc; |
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| 124 | printf("rtems_telnetd() started with stacksize=%u,priority=%d\n", |
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| 125 | telnetd_stack_size,telnetd_task_priority); |
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| 126 | return 0; |
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| 127 | } |
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| 128 | /***********************************************************/ |
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| 129 | int register_telnetd(void) { |
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| 130 | shell_add_cmd("telnetd","telnet","telnetd [stacksize [tsk_priority]]",main_telnetd); |
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| 131 | return 0; |
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| 132 | } |
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| 133 | /***********************************************************/ |
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