X-Git-Url: https://arthur.barton.de/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=etc%2Fafpd%2Fafp_dsi.c;h=bde1818bd7a1598ceedb48626671b45de674e9e6;hb=b0bcb8f6b0571592a50ce039882c9319e012a270;hp=954ff14fd20db6072269ac0384a4d1a9eabb6f8f;hpb=dc2cc97f6b11c7707ee255ddb104b296dd6c3e63;p=netatalk.git diff --git a/etc/afpd/afp_dsi.c b/etc/afpd/afp_dsi.c index 954ff14f..bde1818b 100644 --- a/etc/afpd/afp_dsi.c +++ b/etc/afpd/afp_dsi.c @@ -25,24 +25,25 @@ #endif /* HAVE_SYS_STAT_H */ #include #include -#include #include +#include +#include #include #include #include +#include +#include +#include +#include +#include +#include -#include "globals.h" #include "switch.h" #include "auth.h" #include "fork.h" #include "dircache.h" -#ifdef FORCE_UIDGID -#warning UIDGID -#include "uid.h" -#endif /* FORCE_UIDGID */ - /* * We generally pass this from afp_over_dsi to all afp_* funcs, so it should already be * available everywhere. Unfortunately some funcs (eg acltoownermode) need acces to it @@ -67,7 +68,6 @@ typedef struct { static rc_elem_t replaycache[REPLAYCACHE_SIZE]; static sigjmp_buf recon_jmp; -static int oldsock = -1; static void afp_dsi_close(AFPObj *obj) { DSI *dsi = obj->handle; @@ -119,7 +119,7 @@ static void afp_dsi_die(int sig) dsi_attention(AFPobj->handle, AFPATTN_SHUTDOWN); afp_dsi_close(AFPobj); - if (sig) /* if no signal, assume dieing because logins are disabled & + if (sig) /* if no signal, assume dieing because logins are disabled & don't log it (maintenance mode)*/ LOG(log_info, logtype_afpd, "Connection terminated"); if (sig == SIGTERM || sig == SIGALRM) { @@ -130,6 +130,25 @@ static void afp_dsi_die(int sig) } } +/* SIGQUIT handler */ +static void ipc_reconnect_handler(int sig _U_) +{ + DSI *dsi = (DSI *)AFPobj->handle; + + if (reconnect_ipc(AFPobj) != 0) { + LOG(log_error, logtype_afpd, "ipc_reconnect_handler: failed IPC reconnect"); + afp_dsi_close(AFPobj); + exit(EXITERR_SYS); + } + + if (ipc_child_write(AFPobj->ipc_fd, IPC_GETSESSION, AFPobj->sinfo.clientid_len, AFPobj->sinfo.clientid) != 0) { + LOG(log_error, logtype_afpd, "ipc_reconnect_handler: failed IPC ID resend"); + afp_dsi_close(AFPobj); + exit(EXITERR_SYS); + } + LOG(log_note, logtype_afpd, "ipc_reconnect_handler: IPC reconnect done"); +} + /* SIGURG handler (primary reconnect) */ static void afp_dsi_transfer_session(int sig _U_) { @@ -137,7 +156,7 @@ static void afp_dsi_transfer_session(int sig _U_) int socket; DSI *dsi = (DSI *)AFPobj->handle; - LOG(log_note, logtype_afpd, "afp_dsi_transfer_session: got SIGURG, trying to receive session"); + LOG(log_debug, logtype_afpd, "afp_dsi_transfer_session: got SIGURG, trying to receive session"); if (readt(AFPobj->ipc_fd, &dsiID, 2, 0, 2) != 2) { LOG(log_error, logtype_afpd, "afp_dsi_transfer_session: couldn't receive DSI id, goodbye"); @@ -151,8 +170,9 @@ static void afp_dsi_transfer_session(int sig _U_) exit(EXITERR_SYS); } - LOG(log_note, logtype_afpd, "afp_dsi_transfer_session: received socket fd: %i", socket); + LOG(log_debug, logtype_afpd, "afp_dsi_transfer_session: received socket fd: %i", socket); + dsi->proto_close(dsi); dsi->socket = socket; dsi->flags = DSI_RECONSOCKET; dsi->datalen = 0; @@ -284,15 +304,19 @@ static void alarm_handler(int sig _U_) if (dsi->flags & DSI_SLEEPING) { if (dsi->tickle > AFPobj->options.sleep) { - LOG(log_error, logtype_afpd, "afp_alarm: sleep time ended"); + LOG(log_note, logtype_afpd, "afp_alarm: sleep time ended"); afp_dsi_die(EXITERR_CLNT); } return; } if (dsi->flags & DSI_DISCONNECTED) { + if (geteuid() == 0) { + LOG(log_note, logtype_afpd, "afp_alarm: unauthenticated user, connection problem"); + afp_dsi_die(EXITERR_CLNT); + } if (dsi->tickle > AFPobj->options.disconnected) { - LOG(log_error, logtype_afpd, "afp_alarm: no reconnect within 10 minutes, goodbye"); + LOG(log_error, logtype_afpd, "afp_alarm: reconnect timer expired, goodbye"); afp_dsi_die(EXITERR_CLNT); } return; @@ -301,16 +325,22 @@ static void alarm_handler(int sig _U_) /* if we're in the midst of processing something, don't die. */ if ( !(dsi->flags & DSI_RUNNING) && (dsi->tickle >= AFPobj->options.timeout)) { LOG(log_error, logtype_afpd, "afp_alarm: child timed out, entering disconnected state"); - dsi->proto_close(dsi); - dsi->flags |= DSI_DISCONNECTED; + if (dsi_disconnect(dsi) != 0) + afp_dsi_die(EXITERR_CLNT); return; } if ((err = pollvoltime(AFPobj)) == 0) + LOG(log_debug, logtype_afpd, "afp_alarm: sending DSI tickle"); err = dsi_tickle(AFPobj->handle); if (err <= 0) { + if (geteuid() == 0) { + LOG(log_note, logtype_afpd, "afp_alarm: unauthenticated user, connection problem"); + afp_dsi_die(EXITERR_CLNT); + } LOG(log_error, logtype_afpd, "afp_alarm: connection problem, entering disconnected state"); - dsi->flags |= DSI_DISCONNECTED; + if (dsi_disconnect(dsi) != 0) + afp_dsi_die(EXITERR_CLNT); } } @@ -350,22 +380,18 @@ void afp_over_dsi(AFPObj *obj) struct sigaction action; AFPobj = obj; + dsi->AFPobj = obj; obj->exit = afp_dsi_die; obj->reply = (int (*)()) dsi_cmdreply; obj->attention = (int (*)(void *, AFPUserBytes)) dsi_attention; dsi->tickle = 0; memset(&action, 0, sizeof(action)); + sigfillset(&action.sa_mask); + action.sa_flags = SA_RESTART; /* install SIGHUP */ action.sa_handler = afp_dsi_reload; - sigemptyset( &action.sa_mask ); - sigaddset(&action.sa_mask, SIGALRM); - sigaddset(&action.sa_mask, SIGTERM); - sigaddset(&action.sa_mask, SIGUSR1); - sigaddset(&action.sa_mask, SIGINT); - sigaddset(&action.sa_mask, SIGUSR2); - action.sa_flags = SA_RESTART; if ( sigaction( SIGHUP, &action, NULL ) < 0 ) { LOG(log_error, logtype_afpd, "afp_over_dsi: sigaction: %s", strerror(errno) ); afp_dsi_die(EXITERR_SYS); @@ -373,13 +399,6 @@ void afp_over_dsi(AFPObj *obj) /* install SIGURG */ action.sa_handler = afp_dsi_transfer_session; - sigemptyset( &action.sa_mask ); - sigaddset(&action.sa_mask, SIGALRM); - sigaddset(&action.sa_mask, SIGTERM); - sigaddset(&action.sa_mask, SIGUSR1); - sigaddset(&action.sa_mask, SIGINT); - sigaddset(&action.sa_mask, SIGUSR2); - action.sa_flags = SA_RESTART; if ( sigaction( SIGURG, &action, NULL ) < 0 ) { LOG(log_error, logtype_afpd, "afp_over_dsi: sigaction: %s", strerror(errno) ); afp_dsi_die(EXITERR_SYS); @@ -387,27 +406,20 @@ void afp_over_dsi(AFPObj *obj) /* install SIGTERM */ action.sa_handler = afp_dsi_die; - sigemptyset( &action.sa_mask ); - sigaddset(&action.sa_mask, SIGALRM); - sigaddset(&action.sa_mask, SIGHUP); - sigaddset(&action.sa_mask, SIGUSR1); - sigaddset(&action.sa_mask, SIGINT); - sigaddset(&action.sa_mask, SIGUSR2); - action.sa_flags = SA_RESTART; if ( sigaction( SIGTERM, &action, NULL ) < 0 ) { LOG(log_error, logtype_afpd, "afp_over_dsi: sigaction: %s", strerror(errno) ); afp_dsi_die(EXITERR_SYS); } - /* Added for server message support */ + /* install SIGQUIT */ + action.sa_handler = ipc_reconnect_handler; + if ( sigaction(SIGQUIT, &action, NULL ) < 0 ) { + LOG(log_error, logtype_afpd, "afp_over_dsi: sigaction: %s", strerror(errno) ); + afp_dsi_die(EXITERR_SYS); + } + + /* SIGUSR2 - server message support */ action.sa_handler = afp_dsi_getmesg; - sigemptyset( &action.sa_mask ); - sigaddset(&action.sa_mask, SIGALRM); - sigaddset(&action.sa_mask, SIGTERM); - sigaddset(&action.sa_mask, SIGUSR1); - sigaddset(&action.sa_mask, SIGHUP); - sigaddset(&action.sa_mask, SIGINT); - action.sa_flags = SA_RESTART; if ( sigaction( SIGUSR2, &action, NULL) < 0 ) { LOG(log_error, logtype_afpd, "afp_over_dsi: sigaction: %s", strerror(errno) ); afp_dsi_die(EXITERR_SYS); @@ -415,12 +427,6 @@ void afp_over_dsi(AFPObj *obj) /* SIGUSR1 - set down in 5 minutes */ action.sa_handler = afp_dsi_timedown; - sigemptyset( &action.sa_mask ); - sigaddset(&action.sa_mask, SIGALRM); - sigaddset(&action.sa_mask, SIGHUP); - sigaddset(&action.sa_mask, SIGTERM); - sigaddset(&action.sa_mask, SIGINT); - sigaddset(&action.sa_mask, SIGUSR2); action.sa_flags = SA_RESTART; if ( sigaction( SIGUSR1, &action, NULL) < 0 ) { LOG(log_error, logtype_afpd, "afp_over_dsi: sigaction: %s", strerror(errno) ); @@ -429,23 +435,14 @@ void afp_over_dsi(AFPObj *obj) /* SIGINT - enable max_debug LOGging to /tmp/afpd.PID.XXXXXX */ action.sa_handler = afp_dsi_debug; - sigfillset( &action.sa_mask ); - action.sa_flags = SA_RESTART; if ( sigaction( SIGINT, &action, NULL) < 0 ) { LOG(log_error, logtype_afpd, "afp_over_dsi: sigaction: %s", strerror(errno) ); afp_dsi_die(EXITERR_SYS); } #ifndef DEBUGGING - /* tickle handler */ + /* SIGALRM - tickle handler */ action.sa_handler = alarm_handler; - sigemptyset(&action.sa_mask); - sigaddset(&action.sa_mask, SIGHUP); - sigaddset(&action.sa_mask, SIGTERM); - sigaddset(&action.sa_mask, SIGUSR1); - sigaddset(&action.sa_mask, SIGINT); - sigaddset(&action.sa_mask, SIGUSR2); - action.sa_flags = SA_RESTART; if ((sigaction(SIGALRM, &action, NULL) < 0) || (setitimer(ITIMER_REAL, &dsi->timer, NULL) < 0)) { afp_dsi_die(EXITERR_SYS); @@ -455,6 +452,26 @@ void afp_over_dsi(AFPObj *obj) if (dircache_init(obj->options.dircachesize) != 0) afp_dsi_die(EXITERR_SYS); + /* set TCP snd/rcv buf */ + if (obj->options.tcp_rcvbuf) { + if (setsockopt(dsi->socket, + SOL_SOCKET, + SO_RCVBUF, + &obj->options.tcp_rcvbuf, + sizeof(obj->options.tcp_rcvbuf)) != 0) { + LOG(log_error, logtype_dsi, "afp_over_dsi: setsockopt(SO_RCVBUF): %s", strerror(errno)); + } + } + if (obj->options.tcp_sndbuf) { + if (setsockopt(dsi->socket, + SOL_SOCKET, + SO_SNDBUF, + &obj->options.tcp_sndbuf, + sizeof(obj->options.tcp_sndbuf)) != 0) { + LOG(log_error, logtype_dsi, "afp_over_dsi: setsockopt(SO_SNDBUF): %s", strerror(errno)); + } + } + /* get stuck here until the end */ while (1) { if (sigsetjmp(recon_jmp, 1) != 0) @@ -471,18 +488,28 @@ void afp_over_dsi(AFPObj *obj) dsi->flags &= ~DSI_RECONSOCKET; continue; } + + /* the client sometimes logs out (afp_logout) but doesn't close the DSI session */ + if (dsi->flags & DSI_AFP_LOGGED_OUT) { + LOG(log_note, logtype_afpd, "afp_over_dsi: client logged out, terminating DSI session"); + afp_dsi_close(obj); + exit(0); + } + + /* got ECONNRESET in read from client => exit*/ + if (dsi->flags & DSI_GOT_ECONNRESET) { + LOG(log_note, logtype_afpd, "afp_over_dsi: client connection reset"); + afp_dsi_close(obj); + exit(0); + } + /* Some error on the client connection, enter disconnected state */ - dsi->flags |= DSI_DISCONNECTED; + if (dsi_disconnect(dsi) != 0) + afp_dsi_die(EXITERR_CLNT); + pause(); /* gets interrupted by SIGALARM or SIGURG tickle */ continue; /* continue receiving until disconnect timer expires * or a primary reconnect succeeds */ - } else { - if (oldsock != -1) { - /* Now, after successfully reading from the new socket after a reconnect * - * we can close the old socket without taking the risk of confusing the client */ - close(oldsock); - oldsock = -1; - } } if (!(dsi->flags & DSI_EXTSLEEP) && (dsi->flags & DSI_SLEEPING)) { @@ -494,8 +521,6 @@ void afp_over_dsi(AFPObj *obj) if (reload_request) { reload_request = 0; load_volumes(AFPobj); - dircache_dump(); - log_dircache_stat(); } /* The first SIGINT enables debugging, the next restores the config */ @@ -503,6 +528,9 @@ void afp_over_dsi(AFPObj *obj) static int debugging = 0; debug_request = 0; + dircache_dump(); + uuidcache_dump(); + if (debugging) { if (obj->options.logconfig) setuplog(obj->options.logconfig); @@ -517,20 +545,24 @@ void afp_over_dsi(AFPObj *obj) } } - if (cmd == DSIFUNC_TICKLE) { - /* timer is not every 30 seconds anymore, so we don't get killed on the client side. */ - if ((dsi->flags & DSI_DIE)) - dsi_tickle(dsi); - pending_request(dsi); - continue; - } dsi->flags |= DSI_DATA; + dsi->tickle = 0; + switch(cmd) { + case DSIFUNC_CLOSE: + LOG(log_debug, logtype_afpd, "DSI: close session request"); afp_dsi_close(obj); LOG(log_note, logtype_afpd, "done"); - return; + exit(0); + + case DSIFUNC_TICKLE: + dsi->flags &= ~DSI_DATA; /* thats no data in the sense we use it in alarm_handler */ + LOG(log_debug, logtype_afpd, "DSI: client tickle"); + /* timer is not every 30 seconds anymore, so we don't get killed on the client side. */ + if ((dsi->flags & DSI_DIE)) + dsi_tickle(dsi); break; case DSIFUNC_CMD: @@ -546,12 +578,12 @@ void afp_over_dsi(AFPObj *obj) function = (u_char) dsi->commands[0]; /* AFP replay cache */ - rc_idx = REPLAYCACHE_SIZE % dsi->clientID; + rc_idx = dsi->clientID % REPLAYCACHE_SIZE; LOG(log_debug, logtype_afpd, "DSI request ID: %u", dsi->clientID); if (replaycache[rc_idx].DSIreqID == dsi->clientID && replaycache[rc_idx].AFPcommand == function) { - LOG(log_debug, logtype_afpd, "AFP Replay Cache match: id: %u / cmd: %s", + LOG(log_note, logtype_afpd, "AFP Replay Cache match: id: %u / cmd: %s", dsi->clientID, AfpNum2name(function)); err = replaycache[rc_idx].result; /* AFP replay cache end */ @@ -573,11 +605,6 @@ void afp_over_dsi(AFPObj *obj) dir_free_invalid_q(); -#ifdef FORCE_UIDGID - /* bring everything back to old euid, egid */ - if (obj->force_uid) - restore_uidgid ( &obj->uidgid ); -#endif /* FORCE_UIDGID */ dsi->flags &= ~DSI_RUNNING; /* Add result to the AFP replay cache */ @@ -599,7 +626,8 @@ void afp_over_dsi(AFPObj *obj) if (!dsi_cmdreply(dsi, err)) { LOG(log_error, logtype_afpd, "dsi_cmdreply(%d): %s", dsi->socket, strerror(errno) ); - dsi->flags |= DSI_DISCONNECTED; + if (dsi_disconnect(dsi) != 0) + afp_dsi_die(EXITERR_CLNT); } break; @@ -619,11 +647,6 @@ void afp_over_dsi(AFPObj *obj) AfpNum2name(function), AfpErr2name(err)); dsi->flags &= ~DSI_RUNNING; -#ifdef FORCE_UIDGID - /* bring everything back to old euid, egid */ - if (obj->force_uid) - restore_uidgid ( &obj->uidgid ); -#endif /* FORCE_UIDGID */ } else { LOG(log_error, logtype_afpd, "(write) bad function %x", function); dsi->datalen = 0; @@ -632,7 +655,8 @@ void afp_over_dsi(AFPObj *obj) if (!dsi_wrtreply(dsi, err)) { LOG(log_error, logtype_afpd, "dsi_wrtreply: %s", strerror(errno) ); - dsi->flags |= DSI_DISCONNECTED; + if (dsi_disconnect(dsi) != 0) + afp_dsi_die(EXITERR_CLNT); } break; @@ -649,6 +673,8 @@ void afp_over_dsi(AFPObj *obj) break; } pending_request(dsi); + + vol_fce_tm_event(); } /* error */