/* See LICENSE file for copyright and license details. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "arg.h" #include "queue.h" #include "readpassphrase.h" #include "util.h" const char *reqerr[] = { [TOX_ERR_FRIEND_ADD_NULL] = "One required argument is missing", [TOX_ERR_FRIEND_ADD_TOO_LONG] = "Message is too long", [TOX_ERR_FRIEND_ADD_NO_MESSAGE] = "Please add a message to your request", [TOX_ERR_FRIEND_ADD_OWN_KEY] = "That appears to be your own ID", [TOX_ERR_FRIEND_ADD_ALREADY_SENT] = "Friend request already sent", [TOX_ERR_FRIEND_ADD_BAD_CHECKSUM] = "Bad checksum while verifying address", [TOX_ERR_FRIEND_ADD_SET_NEW_NOSPAM] = "Friend already added but invalid nospam", [TOX_ERR_FRIEND_ADD_MALLOC] = "Error increasing the friend list size" }; const char *callerr[] = { [TOXAV_ERR_SEND_FRAME_NULL] = "Samples pointer is NULL", [TOXAV_ERR_SEND_FRAME_FRIEND_NOT_FOUND] = "No friend matching this ID", [TOXAV_ERR_SEND_FRAME_FRIEND_NOT_IN_CALL] = "Currently not in a call", [TOXAV_ERR_SEND_FRAME_SYNC] = "Synchronization error occurred", [TOXAV_ERR_SEND_FRAME_INVALID] = "One of the frame parameters was invalid", [TOXAV_ERR_SEND_FRAME_PAYLOAD_TYPE_DISABLED] = "Either friend turned off audio receiving or we turned off sending for the said payload.", [TOXAV_ERR_SEND_FRAME_RTP_FAILED] = "Failed to push frame through rtp interface" }; struct node { char *addr4; char *addr6; uint16_t udp_port; uint16_t tcp_port; char *idstr; }; #include "config.h" struct file { int type; const char *name; int flags; }; enum { NONE, FIFO, STATIC }; enum { IN, OUT, ERR }; static struct file gfiles[] = { [IN] = { .type = FIFO, .name = "in", .flags = O_RDONLY | O_NONBLOCK }, [OUT] = { .type = NONE, .name = "out", .flags = O_WRONLY | O_TRUNC | O_CREAT }, [ERR] = { .type = STATIC, .name = "err", .flags = O_WRONLY | O_TRUNC | O_CREAT }, }; static int idfd = -1; struct slot { const char *name; void (*cb)(void *); int outisfolder; int dirfd; int fd[LEN(gfiles)]; }; static void setname(void *); static void setstatus(void *); static void setuserstate(void *); static void sendfriendreq(void *); static void setnospam(void *); static void newconf(void *); enum { NAME, STATUS, STATE, REQUEST, NOSPAM, CONF }; static struct slot gslots[] = { [NAME] = { .name = "name", .cb = setname, .outisfolder = 0, .dirfd = -1, .fd = {-1, -1, -1} }, [STATUS] = { .name = "status", .cb = setstatus, .outisfolder = 0, .dirfd = -1, .fd = {-1, -1, -1} }, [STATE] = { .name = "state", .cb = setuserstate, .outisfolder = 0, .dirfd = -1, .fd = {-1, -1, -1} }, [REQUEST] = { .name = "request", .cb = sendfriendreq, .outisfolder = 1, .dirfd = -1, .fd = {-1, -1, -1} }, [NOSPAM] = { .name = "nospam", .cb = setnospam, .outisfolder = 0, .dirfd = -1, .fd = {-1, -1, -1} }, [CONF] = { .name = "conf", .cb = newconf, .outisfolder = 1, .dirfd = -1, .fd = {-1, -1, -1} }, }; enum { FTEXT_IN, FFILE_IN, FCALL_IN, FTEXT_OUT, FFILE_OUT, FCALL_OUT, FREMOVE, FONLINE, FNAME, FSTATUS, FSTATE, FFILE_STATE, FCALL_STATE }; static struct file ffiles[] = { [FTEXT_IN] = { .type = FIFO, .name = "text_in", .flags = O_RDONLY | O_NONBLOCK }, [FFILE_IN] = { .type = FIFO, .name = "file_in", .flags = O_RDONLY | O_NONBLOCK }, [FCALL_IN] = { .type = FIFO, .name = "call_in", .flags = O_RDONLY | O_NONBLOCK }, [FTEXT_OUT] = { .type = STATIC, .name = "text_out", .flags = O_WRONLY | O_APPEND | O_CREAT }, [FFILE_OUT] = { .type = FIFO, .name = "file_out", .flags = O_WRONLY | O_NONBLOCK }, [FCALL_OUT] = { .type = FIFO, .name = "call_out", .flags = O_WRONLY | O_NONBLOCK }, [FREMOVE] = { .type = FIFO, .name = "remove", .flags = O_RDONLY | O_NONBLOCK }, [FONLINE] = { .type = STATIC, .name = "online", .flags = O_WRONLY | O_TRUNC | O_CREAT }, [FNAME] = { .type = STATIC, .name = "name", .flags = O_WRONLY | O_TRUNC | O_CREAT }, [FSTATUS] = { .type = STATIC, .name = "status", .flags = O_WRONLY | O_TRUNC | O_CREAT }, [FSTATE] = { .type = STATIC, .name = "state", .flags = O_WRONLY | O_TRUNC | O_CREAT }, [FFILE_STATE] = { .type = STATIC, .name = "file_pending", .flags = O_WRONLY | O_TRUNC | O_CREAT }, [FCALL_STATE] = { .type = STATIC, .name = "call_state", .flags = O_WRONLY | O_TRUNC | O_CREAT }, }; enum { CMEMBERS, CINVITE, CLEAVE, CTITLE_IN, CTITLE_OUT, CTEXT_IN, CTEXT_OUT }; static struct file cfiles[] = { [CMEMBERS] = { .type = STATIC, .name = "members", .flags = O_WRONLY | O_TRUNC | O_CREAT }, [CINVITE] = { .type = FIFO, .name = "invite", .flags = O_RDONLY | O_NONBLOCK }, [CLEAVE] = { .type = FIFO, .name = "leave", .flags = O_RDONLY | O_NONBLOCK }, [CTITLE_IN] = { .type = FIFO, .name = "title_in", .flags = O_RDONLY | O_NONBLOCK }, [CTITLE_OUT] = { .type = STATIC, .name = "title_out", .flags = O_WRONLY | O_TRUNC | O_CREAT }, [CTEXT_IN] = { .type = FIFO, .name = "text_in", .flags = O_RDONLY | O_NONBLOCK }, [CTEXT_OUT] = { .type = STATIC, .name = "text_out", .flags = O_WRONLY | O_APPEND | O_CREAT }, }; static char *ustate[] = { [TOX_USER_STATUS_NONE] = "available", [TOX_USER_STATUS_AWAY] = "away", [TOX_USER_STATUS_BUSY] = "busy" }; enum { TRANSFER_NONE, TRANSFER_INITIATED, TRANSFER_PENDING, TRANSFER_INPROGRESS, TRANSFER_PAUSED }; struct transfer { uint32_t fnum; uint8_t *buf; ssize_t n; int pendingbuf; int state; }; enum { OUTGOING = 1 << 0, INCOMING = 1 << 1, TRANSMITTING = 1 << 2, INCOMPLETE = 1 << 3, RINGING = 1 << 4, }; struct call { int state; uint8_t *frame; ssize_t n; struct timespec lastsent; }; struct friend { char name[TOX_MAX_NAME_LENGTH + 1]; uint32_t num; uint8_t id[TOX_PUBLIC_KEY_SIZE]; char idstr[2 * TOX_PUBLIC_KEY_SIZE + 1]; int dirfd; int fd[LEN(ffiles)]; struct transfer tx; int rxstate; struct call av; TAILQ_ENTRY(friend) entry; }; struct conference { uint32_t num; char numstr[2 * sizeof(uint32_t) + 1]; int dirfd; int fd[LEN(cfiles)]; TAILQ_ENTRY(conference) entry; }; struct request { uint8_t id[TOX_PUBLIC_KEY_SIZE]; char idstr[2 * TOX_PUBLIC_KEY_SIZE + 1]; char *msg; int fd; TAILQ_ENTRY(request) entry; }; struct invite { char *fifoname; uint8_t *cookie; size_t cookielen; uint32_t inviter; int fd; TAILQ_ENTRY(invite) entry; }; static TAILQ_HEAD(friendhead, friend) friendhead = TAILQ_HEAD_INITIALIZER(friendhead); static TAILQ_HEAD(confhead, conference) confhead = TAILQ_HEAD_INITIALIZER(confhead); static TAILQ_HEAD(reqhead, request) reqhead = TAILQ_HEAD_INITIALIZER(reqhead); static TAILQ_HEAD(invhead, invite) invhead = TAILQ_HEAD_INITIALIZER(invhead); static Tox *tox; static ToxAV *toxav; static int framesize; static uint8_t *passphrase; static uint32_t pplen; static volatile sig_atomic_t running = 1; static struct timespec timediff(struct timespec, struct timespec); static void printrat(void); static void logmsg(const char *, ...); static int fifoopen(int, struct file); static void fiforeset(int, int *, struct file); static ssize_t fiforead(int, int *, struct file, void *, size_t); static uint32_t interval(Tox *, struct ToxAV*); static void cbcallinvite(ToxAV *, uint32_t, bool, bool, void *); static void cbcallstate(ToxAV *, uint32_t, uint32_t, void *); static void cbcalldata(ToxAV *, uint32_t, const int16_t *, size_t, uint8_t, uint32_t, void *); static void cancelcall(struct friend *, char *); static void sendfriendcalldata(struct friend *); static void writemembers(struct conference *); static void cbconnstatus(Tox *, uint32_t, TOX_CONNECTION, void *); static void cbfriendmessage(Tox *, uint32_t, TOX_MESSAGE_TYPE, const uint8_t *, size_t, void *); static void cbfriendrequest(Tox *, const uint8_t *, const uint8_t *, size_t, void *); static void cbnamechange(Tox *, uint32_t, const uint8_t *, size_t, void *); static void cbstatusmessage(Tox *, uint32_t, const uint8_t *, size_t, void *); static void cbfriendstate(Tox *, uint32_t, TOX_USER_STATUS, void *); static void cbfilecontrol(Tox *, uint32_t, uint32_t, TOX_FILE_CONTROL, void *); static void cbfilesendreq(Tox *, uint32_t, uint32_t, uint32_t, uint64_t, const uint8_t *, size_t, void *); static void cbfiledata(Tox *, uint32_t, uint32_t, uint64_t, const uint8_t *, size_t, void *); static void cbconfinvite(Tox *, uint32_t, TOX_CONFERENCE_TYPE, const uint8_t *, size_t, void *); static void cbconfmessage(Tox *, uint32_t, uint32_t, TOX_MESSAGE_TYPE, const uint8_t *, size_t, void *); static void cbconftitle(Tox *, uint32_t, uint32_t, const uint8_t *, size_t, void *); static void cbconfmembers(Tox *, uint32_t, uint32_t, TOX_CONFERENCE_STATE_CHANGE, void *); static void canceltxtransfer(struct friend *); static void cancelrxtransfer(struct friend *); static void sendfriendtext(struct friend *); static void removefriend(struct friend *); static void invitefriend(struct conference *); static void sendconftext(struct conference *); static void updatetitle(struct conference *); static int readpass(const char *, uint8_t **, uint32_t *); static void dataload(struct Tox_Options *); static void datasave(void); static int localinit(void); static int toxinit(void); static int toxconnect(void); static void id2str(uint8_t *, char *); static void str2id(char *, uint8_t *); static void friendcreate(uint32_t); static void confcreate(uint32_t); static void friendload(void); static void frienddestroy(struct friend *); static void confdestroy(struct conference *); static void loop(void); static void initshutdown(int); static void toxshutdown(void); static void usage(void); #define FD_APPEND(fd) do { \ FD_SET((fd), &rfds); \ if ((fd) > fdmax) \ fdmax = (fd); \ } while (0) #undef MIN #define MIN(x, y) ((x) < (y) ? (x) : (y)) static struct timespec timediff(struct timespec t1, struct timespec t2) { struct timespec tmp; tmp.tv_sec = t2.tv_sec - t1.tv_sec; if ((t2.tv_nsec - t1.tv_nsec) > 0) { tmp.tv_nsec = (t2.tv_nsec - t1.tv_nsec); } else { tmp.tv_nsec = 1E9 - (t1.tv_nsec - t2.tv_nsec); tmp.tv_sec--; } return tmp; } static void printrat(void) { printf( "\033[31m" " /y\\ /y\\\n" " /ver\\ /"VERSION"\\\n" " yyyyyy\\ /yyyyyy\n" " \\yyyyyyyyyyyyyyyyyy/\n" " yyyyyyyyyyyyyyyyyy\n" " yyyyyyyyyyyyyyyyyy\n" " yyy'yyyyyyyyyy'yyy\n" " \\yy yyyyyyyy yy/\n" " \\yy.yyyyyyyy.yy/\n" " \\yyyyyyyyyyyy/\n" " \\yyyyyyyy/\n" " -------yyyyyyyy-------\n" " ..---yyyyyy---..\n" " ..--yyyy--..\n" "\033[0m\n"); } static void logmsg(const char *fmt, ...) { time_t t; va_list ap; char buft[64]; va_start(ap, fmt); t = time(NULL); strftime(buft, sizeof(buft), "%F %R", localtime(&t)); printf("%s ", buft); vfprintf(stdout, fmt, ap); va_end(ap); } static int fifoopen(int dirfd, struct file f) { int fd; fd = openat(dirfd, f.name, f.flags, 0666); if (fd < 0 && errno != ENXIO) eprintf("openat %s:", f.name); return fd; } static void fiforeset(int dirfd, int *fd, struct file f) { ssize_t r; r = unlinkat(dirfd, f.name, 0); if (r < 0 && errno != ENOENT) eprintf("unlinkat %s:", f.name); if (*fd != -1) close(*fd); r = mkfifoat(dirfd, f.name, 0666); if (r < 0 && errno != EEXIST) eprintf("mkfifoat %s:", f.name); *fd = fifoopen(dirfd, f); } static ssize_t fiforead(int dirfd, int *fd, struct file f, void *buf, size_t sz) { ssize_t r; again: r = read(*fd, buf, sz); if (r == 0) { fiforeset(dirfd, fd, f); return 0; } else if (r < 0) { if (errno == EINTR) goto again; if (errno == EWOULDBLOCK) return -1; eprintf("read %s:", f.name); } return r; } static uint32_t interval(Tox *m, struct ToxAV *av) { return MIN(tox_iteration_interval(m), toxav_iteration_interval(av)); } static void cbcallinvite(ToxAV *av, uint32_t fnum, bool audio, bool video, void *udata) { struct friend *f; TAILQ_FOREACH(f, &friendhead, entry) if (f->num == fnum) break; if (!f) return; if (!audio) { if (!toxav_call_control(toxav, f->num, TOXAV_CALL_CONTROL_CANCEL, NULL)) weprintf("Failed to reject call\n"); logmsg(": %s : Audio > Rejected (no audio)\n", f->name); return; } f->av.state |= RINGING; ftruncate(f->fd[FCALL_STATE], 0); lseek(f->fd[FCALL_STATE], 0, SEEK_SET); dprintf(f->fd[FCALL_STATE], "pending\n"); logmsg(": %s : Audio > Ringing\n", f->name); } static void cbcallstate(ToxAV *av, uint32_t fnum, uint32_t state, void *udata) { struct friend *f; TAILQ_FOREACH(f, &friendhead, entry) if (f->num == fnum) break; if (!f) return; if ((state & TOXAV_FRIEND_CALL_STATE_ERROR) || (state & TOXAV_FRIEND_CALL_STATE_FINISHED)) { f->av.state &= ~TRANSMITTING; cancelcall(f, "Finished"); return; } /* * If we've are ringing a friend, and he sends a control that's * not FINISHED, it means he accepted the call, so we can start * transmitting audio frames */ if (f->av.state & RINGING) { f->av.state &= ~RINGING; f->av.state |= TRANSMITTING; logmsg(": %s : Audio > Transmitting\n", f->name); } } static void cbcalldata(ToxAV *av, uint32_t fnum, const int16_t *data, size_t len, uint8_t channels, uint32_t rate, void *udata) { struct friend *f; ssize_t n, wrote; int fd; uint8_t *buf; TAILQ_FOREACH(f, &friendhead, entry) if (f->num == fnum) break; if (!f) return; if (!(f->av.state & INCOMING)) { /* try to open call_out for writing */ fd = fifoopen(f->dirfd, ffiles[FCALL_OUT]); if (fd < 0) { close (fd); return; } if (f->fd[FCALL_OUT] < 0) { f->fd[FCALL_OUT] = fd; f->av.state |= INCOMING; } } buf = (uint8_t *)data; len *= 2; wrote = 0; while (len > 0) { n = write(f->fd[FCALL_OUT], &buf[wrote], len); if (n < 0) { if (errno == EPIPE) f->av.state &= ~INCOMING; break; } else if (n == 0) { break; } wrote += n; len -= n; } } static void cbconfinvite(Tox *m, uint32_t frnum, TOX_CONFERENCE_TYPE type, const uint8_t *cookie, size_t clen, void * udata) { size_t i, j, namelen; struct file invfifo; struct invite *inv; uint8_t id[TOX_PUBLIC_KEY_SIZE]; if(type != TOX_CONFERENCE_TYPE_TEXT) { weprintf("Only text conferences supported at the moment\n"); return; } if (!tox_friend_get_public_key(tox, frnum, id, NULL)) { weprintf("Failed to get key by friend %i for invite\n", frnum); return; } inv = calloc(1, sizeof(*inv)); if (!inv) eprintf("calloc:"); inv->fd = -1; inv->inviter = frnum; inv->cookielen = clen; inv->cookie = malloc(inv->cookielen); if (!inv->cookie) eprintf("malloc:"); memcpy(inv->cookie, cookie, clen); namelen = 2 * TOX_PUBLIC_KEY_SIZE + 1 + 2 * clen + 2; inv->fifoname = malloc(namelen); if (!inv->fifoname) eprintf("malloc:"); i = 0; id2str(id, inv->fifoname); i += 2 * TOX_PUBLIC_KEY_SIZE; inv->fifoname[i] = '_'; i++; for(j = 0; j < clen; i+=2, j++) sprintf(inv->fifoname + i, "%02X", cookie[j]); i++; inv->fifoname[i] = '\0'; invfifo.name = inv->fifoname; invfifo.flags = O_RDONLY | O_NONBLOCK; fiforeset(gslots[CONF].fd[OUT], &inv->fd, invfifo); TAILQ_INSERT_TAIL(&invhead, inv, entry); logmsg("Invite > %s\n", inv->fifoname); } static void cbconfmessage(Tox *m, uint32_t cnum, uint32_t pnum, TOX_MESSAGE_TYPE type, const uint8_t *data, size_t len, void *udata) { struct conference *c; time_t t; uint8_t msg[len + 1], namt[TOX_MAX_NAME_LENGTH + 1]; char buft[64]; memcpy(msg, data, len); msg[len] = '\0'; TAILQ_FOREACH(c, &confhead, entry) { if (c->num == cnum) { t = time(NULL); strftime(buft, sizeof(buft), "%F %R", localtime(&t)); if (!tox_conference_peer_get_name(tox, c->num, pnum, namt, NULL)) { weprintf("Unable to obtain name for peer %d in conference %s\n", pnum, c->numstr); return; } namt[tox_conference_peer_get_name_size(tox, c->num, pnum, NULL)] = '\0'; dprintf(c->fd[CTEXT_OUT], "%s <%s> %s\n", buft, namt, msg); if (confmsg_log) logmsg("%s : %s <%s> %s\n", c->numstr, buft, namt, msg); break; } } } static void cbconftitle(Tox *m, uint32_t cnum, uint32_t pnum, const uint8_t *data, size_t len, void * udata) { struct conference *c; char title[TOX_MAX_NAME_LENGTH + 1]; memcpy(title, data, len); title[len] = '\0'; TAILQ_FOREACH(c, &confhead, entry) { if (c->num == cnum) { ftruncate(c->fd[CTITLE_OUT], 0); lseek(c->fd[CTITLE_OUT], 0, SEEK_SET); dprintf(c->fd[CTITLE_OUT], "%s\n", title); logmsg(": %s : Title > %s\n", c->numstr, title); break; } } } static void cbconfmembers(Tox *m, uint32_t cnum, uint32_t pnum, TOX_CONFERENCE_STATE_CHANGE type, void *udata) { struct conference *c; TAILQ_FOREACH(c, &confhead, entry) { if (c->num == cnum) { writemembers(c); break; } } } static void cancelcall(struct friend *f, char *action) { logmsg(": %s : Audio > %s\n", f->name, action); if (f->av.state & TRANSMITTING || f->av.state & RINGING) { if (!toxav_call_control(toxav, f->num, TOXAV_CALL_CONTROL_CANCEL, NULL)) weprintf("Failed to terminate call\n"); } f->av.state = 0; /* Cancel Rx side of the call */ if (f->fd[FCALL_OUT] != -1) { close(f->fd[FCALL_OUT]); f->fd[FCALL_OUT] = -1; } ftruncate(f->fd[FCALL_STATE], 0); lseek(f->fd[FCALL_STATE], 0, SEEK_SET); dprintf(f->fd[FCALL_STATE], "none\n"); /* Cancel Tx side of the call */ free(f->av.frame); f->av.frame = NULL; fiforeset(f->dirfd, &f->fd[FCALL_IN], ffiles[FCALL_IN]); } static void sendfriendcalldata(struct friend *f) { struct timespec now, diff; ssize_t n; TOXAV_ERR_SEND_FRAME err; n = fiforead(f->dirfd, &f->fd[FCALL_IN], ffiles[FCALL_IN], f->av.frame + (f->av.state & INCOMPLETE ? f->av.n : 0), framesize * sizeof(int16_t) - (f->av.state & INCOMPLETE ? f->av.n : 0)); if (n == 0) { f->av.state &= ~OUTGOING; f->av.state &= ~INCOMPLETE; return; } else if (n < 0 || f->av.state & RINGING) { /* discard data as long as the call is not established */ return; } else if (n == (framesize * sizeof(int16_t) - (f->av.state & INCOMPLETE ? f->av.n : 0))) { f->av.state &= ~INCOMPLETE; f->av.n = 0; } else { f->av.state |= INCOMPLETE; f->av.n += n; return; } clock_gettime(CLOCK_MONOTONIC, &now); diff = timediff(f->av.lastsent, now); if (diff.tv_sec == 0 && diff.tv_nsec < (AUDIOFRAME - 1) * 1E6) { diff.tv_nsec = (AUDIOFRAME - 1) * 1E6 - diff.tv_nsec; nanosleep(&diff, NULL); } clock_gettime(CLOCK_MONOTONIC, &f->av.lastsent); if (!toxav_audio_send_frame(toxav, f->num, (int16_t *)f->av.frame, framesize, AUDIOCHANNELS, AUDIOSAMPLERATE, &err)) weprintf("Failed to send audio frame: %s\n", callerr[err]); } static void writemembers(struct conference *c) { size_t i; uint32_t peers, pnum; uint8_t name[TOX_MAX_NAME_LENGTH + 1]; TOX_ERR_CONFERENCE_PEER_QUERY err; /*The peer list is written when we invite the members by the callback*/ ftruncate(c->fd[CMEMBERS], 0); peers = tox_conference_peer_count(tox, c->num, &err); if (err != TOX_ERR_CONFERENCE_PEER_QUERY_OK) { weprintf("Unable to obtain peer count for conference %d\n", c->num); return; } for (pnum = 0; pnum < peers; pnum++) { if (!tox_conference_peer_get_name(tox, c->num, pnum, name, NULL)) { weprintf("Unable to obtain the name for peer %d\n", pnum); } else { i = tox_conference_peer_get_name_size(tox, c->num, pnum, NULL); name[i] = '\0'; dprintf(c->fd[CMEMBERS], "%s\n", name); } } } static void cbconnstatus(Tox *m, uint32_t frnum, TOX_CONNECTION status, void *udata) { struct friend *f; struct request *req, *rtmp; size_t r; char name[TOX_MAX_NAME_LENGTH + 1]; TOX_ERR_FRIEND_QUERY err; r = tox_friend_get_name_size(tox, frnum, &err); if (err != TOX_ERR_FRIEND_QUERY_OK) { weprintf("Failed to get name for friend number %ld\n", (long)frnum); return; } else if (r == 0) { snprintf(name, sizeof(name), "Anonymous"); } else { tox_friend_get_name(tox, frnum, (uint8_t *)name, NULL); name[r] = '\0'; } logmsg(": %s : Connection > %s\n", name, status == TOX_CONNECTION_NONE ? "Offline" : "Online"); TAILQ_FOREACH(f, &friendhead, entry) { if (f->num == frnum) { ftruncate(f->fd[FONLINE], 0); lseek(f->fd[FONLINE], 0, SEEK_SET); dprintf(f->fd[FONLINE], "%d\n", status); break; } } /* Remove the pending request-FIFO if it exists */ for (req = TAILQ_FIRST(&reqhead); req; req = rtmp) { rtmp = TAILQ_NEXT(req, entry); if (memcmp(f->id, req->id, TOX_PUBLIC_KEY_SIZE)) continue; unlinkat(gslots[REQUEST].fd[OUT], req->idstr, 0); close(req->fd); TAILQ_REMOVE(&reqhead, req, entry); free(req->msg); free(req); } } static void cbfriendmessage(Tox *m, uint32_t frnum, TOX_MESSAGE_TYPE type, const uint8_t *data, size_t len, void *udata) { struct friend *f; time_t t; uint8_t msg[len + 1]; char buft[64]; memcpy(msg, data, len); msg[len] = '\0'; TAILQ_FOREACH(f, &friendhead, entry) { if (f->num == frnum) { t = time(NULL); strftime(buft, sizeof(buft), "%F %R", localtime(&t)); dprintf(f->fd[FTEXT_OUT], "%s %s\n", buft, msg); if (friendmsg_log) logmsg(": %s > %s\n", f->name, msg); break; } } } static void cbfriendrequest(Tox *m, const uint8_t *id, const uint8_t *data, size_t len, void *udata) { struct file reqfifo; struct request *req; req = calloc(1, sizeof(*req)); if (!req) eprintf("calloc:"); req->fd = -1; memcpy(req->id, id, TOX_PUBLIC_KEY_SIZE); id2str(req->id, req->idstr); if (len > 0) { req->msg = malloc(len + 1); if (!req->msg) eprintf("malloc:"); memcpy(req->msg, data, len); req->msg[len] = '\0'; } else { req->msg = "ratox is awesome!"; } reqfifo.name = req->idstr; reqfifo.flags = O_RDONLY | O_NONBLOCK; fiforeset(gslots[REQUEST].fd[OUT], &req->fd, reqfifo); TAILQ_INSERT_TAIL(&reqhead, req, entry); logmsg("Request > %s : %s\n", req->idstr, req->msg); } static void cbnamechange(Tox *m, uint32_t frnum, const uint8_t *data, size_t len, void *user) { struct friend *f; uint8_t name[len + 1]; memcpy(name, data, len); name[len] = '\0'; TAILQ_FOREACH(f, &friendhead, entry) { if (f->num == frnum) { if (memcmp(f->name, name, len + 1) == 0) break; ftruncate(f->fd[FNAME], 0); lseek(f->fd[FNAME], 0, SEEK_SET); dprintf(f->fd[FNAME], "%s\n", name); logmsg(": %s : Name > %s\n", f->name, name); memcpy(f->name, name, len + 1); break; } } datasave(); } static void cbstatusmessage(Tox *m, uint32_t frnum, const uint8_t *data, size_t len, void *udata) { struct friend *f; uint8_t status[len + 1]; memcpy(status, data, len); status[len] = '\0'; TAILQ_FOREACH(f, &friendhead, entry) { if (f->num == frnum) { ftruncate(f->fd[FSTATUS], 0); lseek(f->fd[FSTATUS], 0, SEEK_SET); dprintf(f->fd[FSTATUS], "%s\n", status); logmsg(": %s : Status > %s\n", f->name, status); break; } } datasave(); } static void cbfriendstate(Tox *m, uint32_t frnum, TOX_USER_STATUS state, void *udata) { struct friend *f; if (state >= LEN(ustate)) { weprintf("Received invalid user status: %d\n", state); return; } TAILQ_FOREACH(f, &friendhead, entry) { if (f->num == frnum) { ftruncate(f->fd[FSTATE], 0); lseek(f->fd[FSTATE], 0, SEEK_SET); dprintf(f->fd[FSTATE], "%s\n", ustate[state]); logmsg(": %s : State > %s\n", f->name, ustate[state]); break; } } datasave(); } static void cbfilecontrol(Tox *m, uint32_t frnum, uint32_t fnum, TOX_FILE_CONTROL ctrltype, void *udata) { struct friend *f; TAILQ_FOREACH(f, &friendhead, entry) if (f->num == frnum) break; if (!f) return; switch (ctrltype) { case TOX_FILE_CONTROL_RESUME: if (f->tx.state == TRANSFER_PAUSED) { logmsg(": %s : Tx > Resumed\n", f->name); f->tx.state = TRANSFER_INPROGRESS; } else { f->tx.fnum = fnum; f->tx.buf = malloc(TOX_MAX_CUSTOM_PACKET_SIZE); if (!f->tx.buf) eprintf("malloc:"); f->tx.n = 0; f->tx.pendingbuf = 0; f->tx.state = TRANSFER_INPROGRESS; logmsg(": %s : Tx > In Progress\n", f->name); } break; case TOX_FILE_CONTROL_PAUSE: if (f->tx.state == TRANSFER_INPROGRESS) { logmsg(": %s : Tx > Paused\n", f->name); f->tx.state = TRANSFER_PAUSED; } break; case TOX_FILE_CONTROL_CANCEL: /* Check wether we're sending or receiving */ if (f->tx.fnum == fnum) { logmsg(": %s : Tx > Rejected\n", f->name); f->tx.state = TRANSFER_NONE; free(f->tx.buf); f->tx.buf = NULL; fiforeset(f->dirfd, &f->fd[FFILE_IN], ffiles[FFILE_IN]); } else { logmsg(": %s : Rx > Cancelled by Sender\n", f->name); cancelrxtransfer(f); } break; default: weprintf("Unhandled file control type: %d\n", ctrltype); break; }; } static void cbfiledatareq(Tox *m, uint32_t frnum, uint32_t fnum, uint64_t pos, size_t flen, void *udata) { struct friend *f; ssize_t n; TAILQ_FOREACH(f, &friendhead, entry) if (f->num == frnum) break; /* Grab another buffer from the FIFO */ if (!f->tx.pendingbuf) { n = fiforead(f->dirfd, &f->fd[FFILE_IN], ffiles[FFILE_IN], f->tx.buf, flen); f->tx.n = n; f->tx.pendingbuf = 0; } if (f->tx.n < 0) { if (errno != EWOULDBLOCK) weprintf("Reading data for file sending would block\n"); return; } if (!tox_file_send_chunk(tox, f->num, f->tx.fnum, pos, f->tx.buf, f->tx.n, NULL)) f->tx.pendingbuf = 1; /* * For streams, core will know that the transfer is finished * if a chunk with length less than the length requested in the * callback is sent. */ if (!f->tx.pendingbuf && (size_t)f->tx.n < flen) { logmsg(": %s : Tx > Complete\n", f->name); f->tx.state = TRANSFER_NONE; f->tx.fnum = -1; free(f->tx.buf); f->tx.buf = NULL; fiforeset(f->dirfd, &f->fd[FFILE_IN], ffiles[FFILE_IN]); return; } } static void cbfilesendreq(Tox *m, uint32_t frnum, uint32_t fnum, uint32_t kind, uint64_t fsz, const uint8_t *fname, size_t flen, void *udata) { struct friend *f; uint8_t filename[flen + 1]; TAILQ_FOREACH(f, &friendhead, entry) if (f->num == frnum) break; if (!f) return; memcpy(filename, fname, flen); filename[flen] = '\0'; if (kind == TOX_FILE_KIND_AVATAR) { if (!tox_file_control(tox, f->num, fnum, TOX_FILE_CONTROL_CANCEL, NULL)) weprintf("Failed to kill avatar transfer\n"); return; } /* We only support a single transfer at a time */ if (f->rxstate == TRANSFER_INPROGRESS) { logmsg(": %s : Rx > Rejected %s, already one in progress\n", f->name, filename); if (!tox_file_control(tox, f->num, f->tx.fnum, TOX_FILE_CONTROL_CANCEL, NULL)) weprintf("Failed to kill new Rx transfer\n"); return; } f->tx.fnum = fnum; ftruncate(f->fd[FFILE_STATE], 0); lseek(f->fd[FFILE_STATE], 0, SEEK_SET); dprintf(f->fd[FFILE_STATE], "%s\n", filename); f->rxstate = TRANSFER_PENDING; logmsg(": %s : Rx > Pending %s\n", f->name, filename); } static void cbfiledata(Tox *m, uint32_t frnum, uint32_t fnum, uint64_t pos, const uint8_t *data, size_t len, void *udata) { struct friend *f; ssize_t n; uint16_t wrote = 0; TAILQ_FOREACH(f, &friendhead, entry) if (f->num == frnum) break; if (!f) return; /* When length is 0, the transfer is finished */ if (!len) { logmsg(": %s : Rx > Complete\n", f->name); if (f->fd[FFILE_OUT] != -1) { close(f->fd[FFILE_OUT]); f->fd[FFILE_OUT] = -1; } ftruncate(f->fd[FFILE_STATE], 0); lseek(f->fd[FFILE_STATE], 0, SEEK_SET); f->rxstate = TRANSFER_NONE; return; } while (len > 0) { n = write(f->fd[FFILE_OUT], &data[wrote], len); if (n < 0) { if (errno == EPIPE) { cancelrxtransfer(f); break; } else if (errno == EWOULDBLOCK) { continue; } } wrote += n; len -= n; } } static void canceltxtransfer(struct friend *f) { if (f->tx.state == TRANSFER_NONE) return; logmsg(": %s : Tx > Cancelling\n", f->name); if (!tox_file_control(tox, f->num, f->tx.fnum, TOX_FILE_CONTROL_CANCEL, NULL)) weprintf("Failed to kill Tx transfer\n"); f->tx.fnum = -1; f->tx.state = TRANSFER_NONE; free(f->tx.buf); f->tx.buf = NULL; fiforeset(f->dirfd, &f->fd[FFILE_IN], ffiles[FFILE_IN]); } static void cancelrxtransfer(struct friend *f) { if (f->rxstate == TRANSFER_NONE) return; logmsg(": %s : Rx > Cancelling\n", f->name); if (!tox_file_control(tox, f->num, f->tx.fnum, TOX_FILE_CONTROL_CANCEL, NULL)) weprintf("Failed to kill Rx transfer\n"); if (f->fd[FFILE_OUT] != -1) { close(f->fd[FFILE_OUT]); f->fd[FFILE_OUT] = -1; } ftruncate(f->fd[FFILE_STATE], 0); lseek(f->fd[FFILE_STATE], 0, SEEK_SET); f->rxstate = TRANSFER_NONE; } static void sendfriendtext(struct friend *f) { ssize_t n; time_t t; char buft[64]; uint8_t buf[TOX_MAX_MESSAGE_LENGTH + 1]; TOX_ERR_FRIEND_SEND_MESSAGE err; n = fiforead(f->dirfd, &f->fd[FTEXT_IN], ffiles[FTEXT_IN], buf, sizeof(buf) - 1); if (n <= 0) return; if (buf[n - 1] == '\n' && n > 1) n--; tox_friend_send_message(tox, f->num, TOX_MESSAGE_TYPE_NORMAL, buf, n, &err); if (err != TOX_ERR_FRIEND_SEND_MESSAGE_OK) weprintf("Failed to send message\n"); buf[n]='\0'; t = time(NULL); strftime(buft, sizeof(buft), "%F %R", localtime(&t)); dprintf(f->fd[FTEXT_OUT], "me %s %s\n", buft, buf); } static void removefriend(struct friend *f) { char c; if (fiforead(f->dirfd, &f->fd[FREMOVE], ffiles[FREMOVE], &c, 1) != 1 || c != '1') return; tox_friend_delete(tox, f->num, NULL); datasave(); logmsg(": %s > Removed\n", f->name); frienddestroy(f); } static void invitefriend(struct conference *c) { ssize_t n; char buf[2 * TOX_ADDRESS_SIZE + 1]; struct friend *f; n = fiforead(c->dirfd, &c->fd[CINVITE], cfiles[CINVITE], buf, sizeof(buf)); if (n > sizeof(buf) || n <= 0) return; if (buf[n - 1] == '\n') buf[n - 1] = '\0'; TAILQ_FOREACH(f, &friendhead, entry) if (!memcmp(buf, f->idstr, sizeof(f->idstr)-1)) break; if (!f) { weprintf("No friend with id %s found for %s\n", buf, c->numstr); return; } if (tox_friend_get_connection_status(tox, f->num, NULL) == TOX_CONNECTION_NONE) { weprintf("%s not online, can't be invited to %s\n", buf, c->numstr); return; } if (!tox_conference_invite(tox, f->num, c->num, NULL)) weprintf("Failed to invite %s\n", buf); else logmsg("- %s : Invited > %s\n", c->numstr, buf); } static void sendconftext(struct conference *c) { ssize_t n; time_t t; char buft[64]; uint8_t buf[TOX_MAX_MESSAGE_LENGTH + 1], me[TOX_MAX_NAME_LENGTH + 1]; n = fiforead(c->dirfd, &c->fd[CTEXT_IN], cfiles[CTEXT_IN], buf, sizeof(buf) - 1); if (n <= 0) return; if (buf[n - 1] == '\n' && n > 1) n--; if (!tox_conference_send_message(tox, c->num, TOX_MESSAGE_TYPE_NORMAL, buf, n, NULL)) weprintf("Failed to send message to %s\n", c->numstr); buf[n] = '\0'; t = time(NULL); strftime(buft, sizeof(buft), "%F %R", localtime(&t)); tox_self_get_name(tox, me); me[tox_self_get_name_size(tox)] = '\0'; dprintf(c->fd[CTEXT_OUT], "%s <%s> %s\n", buft, me, buf); } static void updatetitle(struct conference *c) { ssize_t n; uint8_t title[TOX_MAX_STATUS_MESSAGE_LENGTH + 1]; n = fiforead(c->dirfd, &c->fd[CTITLE_IN], cfiles[CTITLE_IN], title, sizeof(title) - 1); if (n <= 0) return; if (title[n - 1] == '\n') n--; title[n] = '\0'; if (!tox_conference_set_title(tox, c->num, title, n, NULL)) { weprintf("Failed to set title for %s to \"%s\"\n", c->numstr, title); return; } ftruncate(c->fd[CTITLE_OUT], 0); lseek(c->fd[CTITLE_OUT], 0, SEEK_SET); dprintf(c->fd[CTITLE_OUT], "%s\n", title); logmsg("- %s : Title > %s\n", c->numstr, title); } static int readpass(const char *prompt, uint8_t **target, uint32_t *len) { char pass[BUFSIZ], *p; p = readpassphrase(prompt, pass, sizeof(pass), RPP_ECHO_OFF); if (!p) { weprintf("Could not read passphrase"); return -1; } if (p[0] == '\0') return -1; *target = realloc(*target, strlen(p)); /* not null-terminated */ if (!*target) eprintf("realloc:"); memcpy(*target, p, strlen(p)); *len = strlen(p); return 0; } static void dataload(struct Tox_Options *toxopt) { off_t sz; uint32_t pp2len = 0; int fd; uint8_t *data, * intermediate, *passphrase2 = NULL; fd = open(savefile, O_RDONLY); if (fd < 0) { if (encryptsavefile) { reprompt1: while (readpass("Data : New passphrase > ", &passphrase, &pplen) < 0); while (readpass("Data : Re-enter passphrase > ", &passphrase2, &pp2len) < 0); if (pplen != pp2len || memcmp(passphrase, passphrase2, pplen)) { weprintf("Data passphrase mismatch\n"); goto reprompt1; } free(passphrase2); } return; } sz = lseek(fd, 0, SEEK_END); lseek(fd, 0, SEEK_SET); if (sz == 0) { weprintf("Datafile %s is empty\n", savefile); return; } else if (sz < 0) { weprintf("Datafile %s can't be seeked\n", savefile); return; } intermediate = malloc(sz); if (!intermediate) eprintf("malloc:"); if (read(fd, intermediate, sz) != sz) eprintf("read %s:", savefile); if (tox_is_data_encrypted(intermediate)) { toxopt->savedata_length = sz-TOX_PASS_ENCRYPTION_EXTRA_LENGTH; data = malloc(toxopt->savedata_length); if (!data) eprintf("malloc:"); if (!encryptsavefile) logmsg("Data : %s > Encrypted, but saving unencrypted\n", savefile); while (readpass("Data : Passphrase > ", &passphrase, &pplen) < 0 || !tox_pass_decrypt(intermediate, sz, passphrase, pplen, data, NULL)); } else { toxopt->savedata_length = sz; data = malloc(sz); if (!data) eprintf("malloc:"); memcpy(data, intermediate, sz); if (encryptsavefile) { logmsg("Data : %s > Not encrypted, but saving encrypted\n", savefile); reprompt2: while (readpass("Data : New passphrase > ", &passphrase, &pplen) < 0); while (readpass("Data : Re-enter passphrase > ", &passphrase2, &pp2len) < 0); if (pplen != pp2len || memcmp(passphrase, passphrase2, pplen)) { weprintf("Data passphrase mismatch\n"); goto reprompt2; } free(passphrase2); } } toxopt->savedata_data = data; toxopt->savedata_type = TOX_SAVEDATA_TYPE_TOX_SAVE; free(intermediate); close(fd); } static void datasave(void) { off_t sz; int fd; uint8_t *data, *intermediate; fd = open(savefile, O_WRONLY | O_TRUNC | O_CREAT , 0666); if (fd < 0) eprintf("open %s:", savefile); sz = tox_get_savedata_size(tox); intermediate = malloc(sz); if (!intermediate) eprintf("malloc:"); tox_get_savedata(tox, intermediate); sz += encryptsavefile ? TOX_PASS_ENCRYPTION_EXTRA_LENGTH : 0; data = malloc(sz); if (!data) eprintf("malloc:"); if (encryptsavefile){ tox_pass_encrypt(intermediate, sz - TOX_PASS_ENCRYPTION_EXTRA_LENGTH, passphrase, pplen, data, NULL); } else { memcpy(data, intermediate, sz); } if (write(fd, data, sz) != sz) eprintf("write %s:", savefile); fsync(fd); free(data); free(intermediate); close(fd); } static int localinit(void) { DIR *d; size_t i, m; int r; uint8_t name[TOX_MAX_NAME_LENGTH + 1]; uint8_t address[TOX_ADDRESS_SIZE]; uint8_t status[TOX_MAX_STATUS_MESSAGE_LENGTH + 1]; for (i = 0; i < LEN(gslots); i++) { r = mkdir(gslots[i].name, 0777); if (r < 0 && errno != EEXIST) eprintf("mkdir %s:", gslots[i].name); d = opendir(gslots[i].name); if (!d) eprintf("opendir %s:", gslots[i].name); r = dirfd(d); if (r < 0) eprintf("dirfd %s:", gslots[i].name); gslots[i].dirfd = r; for (m = 0; m < LEN(gfiles); m++) { if (gfiles[m].type == FIFO) { fiforeset(gslots[i].dirfd, &gslots[i].fd[m], gfiles[m]); } else if (gfiles[m].type == STATIC || (gfiles[m].type == NONE && !gslots[i].outisfolder)) { gslots[i].fd[m] = fifoopen(gslots[i].dirfd, gfiles[m]); } else if (gfiles[m].type == NONE && gslots[i].outisfolder) { r = mkdirat(gslots[i].dirfd, gfiles[m].name, 0777); if (r < 0 && errno != EEXIST) eprintf("mkdirat %s:", gfiles[m].name); r = openat(gslots[i].dirfd, gfiles[m].name, O_RDONLY | O_DIRECTORY); if (r < 0) eprintf("openat %s:", gfiles[m].name); gslots[i].fd[m] = r; } } } /* Dump current name */ r = tox_self_get_name_size(tox); if (r == 0) { logmsg("Name > Empty\n"); } tox_self_get_name(tox, name); name[r] = '\0'; ftruncate(gslots[NAME].fd[OUT], 0); dprintf(gslots[NAME].fd[OUT], "%s\n", name); /* Dump status */ r = tox_self_get_status_message_size(tox); if (r == 0) { logmsg("Status > Empty\n"); } tox_self_get_status_message(tox, status); status[r] = '\0'; ftruncate(gslots[STATUS].fd[OUT], 0); dprintf(gslots[STATUS].fd[OUT], "%s\n", status); /* Dump user state */ r = tox_self_get_status(tox); ftruncate(gslots[STATE].fd[OUT], 0); dprintf(gslots[STATE].fd[OUT], "%s\n", ustate[r]); /* Dump ID */ idfd = open("id", O_WRONLY | O_CREAT, 0666); if (idfd < 0) eprintf("open id:"); tox_self_get_address(tox, address); for (i = 0; i < TOX_ADDRESS_SIZE; i++) dprintf(idfd, "%02X", address[i]); dprintf(idfd, "\n"); /* Dump Nospam */ ftruncate(gslots[NOSPAM].fd[OUT], 0); dprintf(gslots[NOSPAM].fd[OUT], "%08X\n", tox_self_get_nospam(tox)); return 0; } static int toxinit(void) { struct Tox_Options toxopt; tox_options_default(&toxopt); toxopt.ipv6_enabled = ipv6; toxopt.udp_enabled = !tcp; if (proxy) { tcp = 1; toxopt.udp_enabled = !tcp; logmsg("Net > Forcing TCP mode\n"); toxopt.proxy_host = proxyaddr; toxopt.proxy_port = proxyport; toxopt.proxy_type = proxytype; logmsg("Net > Using proxy %s:%hu\n", proxyaddr, proxyport); } dataload(&toxopt); tox = tox_new(&toxopt, NULL); if (!tox) eprintf("Core : Tox > Initialization failed\n"); datasave(); toxav = toxav_new(tox, NULL); if (!toxav) eprintf("Core : ToxAV > Initialization failed\n"); framesize = (AUDIOSAMPLERATE * AUDIOFRAME * AUDIOCHANNELS) / 1000; tox_callback_friend_connection_status(tox, cbconnstatus); tox_callback_friend_message(tox, cbfriendmessage); tox_callback_friend_request(tox, cbfriendrequest); tox_callback_friend_name(tox, cbnamechange); tox_callback_friend_status_message(tox, cbstatusmessage); tox_callback_friend_status(tox, cbfriendstate); tox_callback_file_recv_control(tox, cbfilecontrol); tox_callback_file_recv(tox, cbfilesendreq); tox_callback_file_recv_chunk(tox, cbfiledata); tox_callback_file_chunk_request(tox, cbfiledatareq); toxav_callback_call(toxav, cbcallinvite, NULL); toxav_callback_call_state(toxav, cbcallstate, NULL); toxav_callback_audio_receive_frame(toxav, cbcalldata, NULL); tox_callback_conference_invite(tox, cbconfinvite); tox_callback_conference_message(tox, cbconfmessage); tox_callback_conference_title(tox, cbconftitle); tox_callback_conference_namelist_change(tox, cbconfmembers); if (toxopt.savedata_data) free((void *)toxopt.savedata_data); return 0; } static int toxconnect(void) { struct node *n; struct node tmp; size_t i, j; bool r; uint8_t id[TOX_ADDRESS_SIZE]; srand(time(NULL)); /* shuffle it to minimize load on nodes */ for (i = LEN(nodes) - 1; i > 0; i--) { j = rand() % LEN(nodes); tmp = nodes[j]; nodes[j] = nodes[i]; nodes[i] = tmp; } for (i = 0; i < LEN(nodes); i++) { n = &nodes[i]; if (ipv6 && !n->addr6) continue; str2id(n->idstr, id); r = tox_bootstrap(tox, ipv6 ? n->addr6 : n->addr4, n->udp_port, id, NULL); if (!r) weprintf("Bootstrap failed for %s\n", ipv6 ? n->addr6 : n->addr4); str2id(n->idstr, id); r += tox_add_tcp_relay(tox, ipv6 ? n->addr6 : n->addr4, n->tcp_port, id, NULL); if (!r) weprintf("Adding a relay failed for %s\n", ipv6 ? n->addr6 : n->addr4); } return 0; } /* Caller has to ensure `idstr' is big enough */ static void id2str(uint8_t *id, char *idstr) { int i; char hex[] = "0123456789ABCDEF"; for (i = 0; i < TOX_PUBLIC_KEY_SIZE; i++) { *idstr++ = hex[(id[i] >> 4) & 0xf]; *idstr++ = hex[id[i] & 0xf]; } *idstr = '\0'; } /* Caller has to ensure that `id' is big enough */ static void str2id(char *idstr, uint8_t *id) { size_t i, len = strlen(idstr) / 2; char *p = idstr; for (i = 0; i < len; ++i, p += 2) sscanf(p, "%2hhx", &id[i]); } static void friendcreate(uint32_t frnum) { struct friend *f; DIR *d; size_t i; int r; uint8_t status[TOX_MAX_STATUS_MESSAGE_LENGTH + 1]; TOX_ERR_FRIEND_QUERY err; f = calloc(1, sizeof(*f)); if (!f) eprintf("calloc:"); i = tox_friend_get_name_size(tox, frnum, &err); if (err != TOX_ERR_FRIEND_QUERY_OK) { weprintf("Failed to get name for %ld\n", (long)frnum); return; } else if (i == 0) { snprintf(f->name, sizeof(f->name), "Anonymous"); } else { tox_friend_get_name(tox, frnum, (uint8_t *)f->name, NULL); f->name[i] = '\0'; } f->num = frnum; if (!tox_friend_get_public_key(tox, f->num, f->id, NULL)) { weprintf("Failed to get key for %s\n", f->name); return; } id2str(f->id, f->idstr); r = mkdir(f->idstr, 0777); if (r < 0 && errno != EEXIST) eprintf("mkdir %s:", f->idstr); d = opendir(f->idstr); if (!d) eprintf("opendir %s:", f->idstr); r = dirfd(d); if (r < 0) eprintf("dirfd %s:", f->idstr); f->dirfd = r; for (i = 0; i < LEN(ffiles); i++) { f->fd[i] = -1; if (ffiles[i].type == FIFO) { fiforeset(f->dirfd, &f->fd[i], ffiles[i]); } else if (ffiles[i].type == STATIC) { f->fd[i] = fifoopen(f->dirfd, ffiles[i]); } } /* Dump name */ ftruncate(f->fd[FNAME], 0); dprintf(f->fd[FNAME], "%s\n", f->name); /* Dump online state */ ftruncate(f->fd[FONLINE], 0); dprintf(f->fd[FONLINE], "%d\n", tox_friend_get_connection_status(tox, frnum, NULL)); /* Dump status */ i = tox_friend_get_status_message_size(tox, frnum, NULL); if (i == SIZE_MAX) { weprintf("Failed to get status for %s\n", f->name); i = 0; } tox_friend_get_status_message(tox, frnum, status, NULL); status[i] = '\0'; ftruncate(f->fd[FSTATUS], 0); dprintf(f->fd[FSTATUS], "%s\n", status); /* Dump user state */ ftruncate(f->fd[FSTATE], 0); dprintf(f->fd[FSTATE], "%s\n", ustate[tox_friend_get_status(tox, frnum, NULL)]); /* Dump file pending state */ ftruncate(f->fd[FFILE_STATE], 0); /* Dump call pending state */ ftruncate(f->fd[FCALL_STATE], 0); dprintf(f->fd[FCALL_STATE], "none\n"); f->av.state = 0; TAILQ_INSERT_TAIL(&friendhead, f, entry); } static void confcreate(uint32_t cnum) { struct conference *c; DIR *d; size_t i; int r; uint8_t title[TOX_MAX_NAME_LENGTH + 1]; TOX_ERR_CONFERENCE_TITLE err; c = calloc(1, sizeof(*c)); if(!c) eprintf("calloc:"); c->num = cnum; sprintf(c->numstr, "%08X", c->num); r = mkdir(c->numstr, 0777); if(r < 0 && errno != EEXIST) eprintf("mkdir %s:", c->numstr); d = opendir(c->numstr); if (!d) eprintf("opendir %s:", c->numstr); r = dirfd(d); if (r < 0) eprintf("dirfd %s:", c->numstr); c->dirfd = r; for (i = 0; i < LEN(cfiles); i++) { c->fd[i] = -1; if (cfiles[i].type == FIFO) { fiforeset(c->dirfd, &c->fd[i], cfiles[i]); } else if (cfiles[i].type == STATIC) { c->fd[i] = fifoopen(c->dirfd, cfiles[i]); } } writemembers(c); /* No warning is printed here in the case of an error * because this always fails when joining after an invite, * but cbconftitle() is called in the next iteration afterwards, * so it doesn't matter after all. */ i = tox_conference_get_title_size(tox, c->num, &err); if (err != TOX_ERR_CONFERENCE_TITLE_OK) i = 0; tox_conference_get_title(tox, c->num, title, NULL); title[i] = '\0'; ftruncate(c->fd[CTITLE_OUT], 0); dprintf(c->fd[CTITLE_OUT], "%s\n", title); TAILQ_INSERT_TAIL(&confhead, c, entry); logmsg("- %s > Created\n", c->numstr); } static void frienddestroy(struct friend *f) { size_t i; canceltxtransfer(f); cancelrxtransfer(f); if (f->av.state > 0) cancelcall(f, "Destroying"); for (i = 0; i < LEN(ffiles); i++) { if (f->dirfd != -1) { unlinkat(f->dirfd, ffiles[i].name, 0); if (f->fd[i] != -1) close(f->fd[i]); } } rmdir(f->idstr); TAILQ_REMOVE(&friendhead, f, entry); } static void confdestroy(struct conference *c) { size_t i; for (i = 0; i dirfd != -1) { unlinkat(c->dirfd, cfiles[i].name, 0); if (c->fd[i] != -1) close(c->fd[i]); } } rmdir(c->numstr); TAILQ_REMOVE(&confhead, c, entry); } static void friendload(void) { size_t sz; uint32_t i; uint32_t *frnums; sz = tox_self_get_friend_list_size(tox); frnums = malloc(sz * sizeof(*frnums)); if (!frnums) eprintf("malloc:"); tox_self_get_friend_list(tox, frnums); for (i = 0; i < sz; i++) friendcreate(frnums[i]); free(frnums); } static void setname(void *data) { ssize_t n; int r; char name[TOX_MAX_NAME_LENGTH + 1]; ftruncate(gslots[NAME].fd[ERR], 0); lseek(gslots[NAME].fd[ERR], 0, SEEK_SET); n = fiforead(gslots[NAME].dirfd, &gslots[NAME].fd[IN], gfiles[IN], name, sizeof(name) - 1); if (n <= 0) return; if (name[n - 1] == '\n') n--; name[n] = '\0'; r = tox_self_set_name(tox, (uint8_t *)name, n, NULL); if (r < 0) { dprintf(gslots[STATE].fd[ERR], "Failed to set name to \"%s\"\n", name); weprintf("Failed to set name to \"%s\"\n", name); return; } datasave(); logmsg("Name > %s\n", name); ftruncate(gslots[NAME].fd[OUT], 0); lseek(gslots[NAME].fd[OUT], 0, SEEK_SET); dprintf(gslots[NAME].fd[OUT], "%s\n", name); } static void setstatus(void *data) { ssize_t n; int r; uint8_t status[TOX_MAX_STATUS_MESSAGE_LENGTH + 1]; ftruncate(gslots[STATUS].fd[ERR], 0); lseek(gslots[STATUS].fd[ERR], 0, SEEK_SET); n = fiforead(gslots[STATUS].dirfd, &gslots[STATUS].fd[IN], gfiles[IN], status, sizeof(status) - 1); if (n <= 0) return; if (status[n - 1] == '\n') n--; status[n] = '\0'; r = tox_self_set_status_message(tox, status, n, NULL); if (r < 0) { dprintf(gslots[STATUS].fd[ERR], "Failed so set status message to \"%s\"\n", status); weprintf("Failed to set status message to \"%s\"\n", status); return; } datasave(); logmsg("Status > %s\n", status); ftruncate(gslots[STATUS].fd[OUT], 0); lseek(gslots[STATUS].fd[OUT], 0, SEEK_SET); dprintf(gslots[STATUS].fd[OUT], "%s\n", status); } static void setuserstate(void *data) { size_t i; ssize_t n; char buf[PIPE_BUF]; ftruncate(gslots[STATE].fd[ERR], 0); lseek(gslots[STATE].fd[ERR], 0, SEEK_SET); n = fiforead(gslots[STATE].dirfd, &gslots[STATE].fd[IN], gfiles[IN], buf, sizeof(buf) - 1); if (n <= 0) return; if (buf[n - 1] == '\n') n--; buf[n] = '\0'; for (i = 0; i < LEN(ustate); i++) { if (strcmp(buf, ustate[i]) == 0) { tox_self_set_status(tox, i); break; } } if (i == LEN(ustate)) { dprintf(gslots[STATE].fd[ERR], "Invalid state %s\n", buf); weprintf("Invalid state %s\n", buf); return; } ftruncate(gslots[STATE].fd[OUT], 0); lseek(gslots[STATE].fd[OUT], 0, SEEK_SET); dprintf(gslots[STATE].fd[OUT], "%s\n", buf); datasave(); logmsg("State > %s\n", buf); } static void sendfriendreq(void *data) { ssize_t n; uint32_t r; char buf[PIPE_BUF], *p; char *msg = "ratox is awesome!"; uint8_t id[TOX_ADDRESS_SIZE]; TOX_ERR_FRIEND_ADD err; ftruncate(gslots[REQUEST].fd[ERR], 0); lseek(gslots[REQUEST].fd[ERR], 0, SEEK_SET); n = fiforead(gslots[REQUEST].dirfd, &gslots[REQUEST].fd[IN], gfiles[IN], buf, sizeof(buf) - 1); if (n <= 0) return; buf[n] = '\0'; /* locate start of msg */ for (p = buf; *p && !isspace(*p); p++) ; if (*p == '\0') goto out; /* no msg */ *p++ = '\0'; if (*p == '\0') { goto out; /* no msg */ } else { msg = p; if (msg[strlen(msg) - 1] == '\n') msg[strlen(msg) - 1] = '\0'; } out: if (strlen(buf) != sizeof(id) * 2) { dprintf(gslots[REQUEST].fd[ERR], "Invalid friend ID\n"); weprintf("Invalid friend ID\n"); return; } str2id(buf, id); r = tox_friend_add(tox, id, (uint8_t *)msg, strlen(msg), &err); if (err != TOX_ERR_FRIEND_ADD_OK) { dprintf(gslots[REQUEST].fd[ERR], "%s\n", reqerr[err]); weprintf("%s\n", reqerr[err]); return; } friendcreate(r); datasave(); logmsg("Request > Sent\n"); } static void setnospam(void *data) { ssize_t n, i; uint32_t nsval; uint8_t nospam[2 * sizeof(uint32_t) + 1]; uint8_t address[TOX_ADDRESS_SIZE]; ftruncate(gslots[NOSPAM].fd[ERR], 0); lseek(gslots[NOSPAM].fd[ERR], 0, SEEK_SET); n = fiforead(gslots[NOSPAM].dirfd, &gslots[NOSPAM].fd[IN], gfiles[IN], nospam, sizeof(nospam) - 1); if (n <= 0) return; if (nospam[n - 1] == '\n') n--; nospam[n] = '\0'; for (i = 0; i < n; i++) { if (nospam[i] < '0' || (nospam[i] > '9' && nospam[i] < 'A') || nospam[i] > 'F') { dprintf(gslots[NOSPAM].fd[ERR], "Input contains invalid characters ![0-9, A-F]\n"); weprintf("Input contains invalid characters ![0-9, A-F]\n"); goto end; } } nsval = strtoul((char *)nospam, NULL, 16); tox_self_set_nospam(tox, nsval); datasave(); logmsg("Nospam > %08X\n", nsval); ftruncate(gslots[NOSPAM].fd[OUT], 0); lseek(gslots[NOSPAM].fd[OUT], 0, SEEK_SET); dprintf(gslots[NOSPAM].fd[OUT], "%08X\n", nsval); tox_self_get_address(tox, address); ftruncate(idfd, 0); lseek(idfd, 0, SEEK_SET); for (i = 0; i < TOX_ADDRESS_SIZE; i++) dprintf(idfd, "%02X", address[i]); dprintf(idfd, "\n"); end: fiforeset(gslots[NOSPAM].dirfd, &gslots[NOSPAM].fd[IN], gfiles[IN]); } static void newconf(void *data) { uint32_t cnum; size_t n; char *title, input[TOX_MAX_NAME_LENGTH + 2 + 1]; ftruncate(gslots[CONF].fd[ERR], 0); lseek(gslots[CONF].fd[ERR], 0, SEEK_SET); n = fiforead(gslots[CONF].dirfd, &gslots[CONF].fd[IN], gfiles[IN], input, sizeof(input) - 1); if (n <= 0) return; if (input[n - 1] == '\n') n--; input[n] = '\0'; if(!((input[0] == 't' || input[0] == 'a' || input[0] == 'v') && input[1] == ' ')) { dprintf(gslots[CONF].fd[ERR], "No flag t|a|v found in input \"%s\"\n", input); weprintf("No flag t|a|v found in input\n"); return; } if(input[0] == 'a' || input[0] == 'v') { dprintf(gslots[CONF].fd[ERR], "Conferences other than text not supported yet\n"); weprintf("Conferences other than text not supported yet\n"); return; } title = input + 2; n -= 2; cnum = tox_conference_new(tox, NULL); if (cnum == UINT32_MAX) { dprintf(gslots[CONF].fd[ERR], "Failed to create new conference\n"); weprintf("Failed to create new conference\n"); return; } if (!tox_conference_set_title(tox, cnum, (uint8_t *)title, n, NULL)) weprintf("Failed to set conference title to \"%s\"", title); confcreate(cnum); } static void loop(void) { struct file reqfifo, invfifo; struct friend *f, *ftmp; struct request *req, *rtmp; struct conference *c, *ctmp; struct invite *inv, *itmp; struct timeval tv; fd_set rfds; time_t t0, t1, c0, c1; size_t i; int connected = 0, n, r, fd, fdmax; char tstamp[64], ch; uint32_t frnum, cnum; t0 = time(NULL); logmsg("DHT > Connecting\n"); toxconnect(); while (running) { /* Handle connection states */ if (tox_self_get_connection_status(tox) != TOX_CONNECTION_NONE) { if (!connected) { logmsg("DHT > Connected\n"); TAILQ_FOREACH(f, &friendhead, entry) { canceltxtransfer(f); cancelrxtransfer(f); } connected = 1; } } else { if (connected) { logmsg("DHT > Disconnected\n"); connected = 0; } t1 = time(NULL); if (t1 > t0 + CONNECTDELAY) { t0 = time(NULL); logmsg("DHT > Connecting\n"); toxconnect(); } } tox_iterate(tox, NULL); toxav_iterate(toxav); /* Prepare select-fd-set */ FD_ZERO(&rfds); fdmax = -1; for (i = 0; i < LEN(gslots); i++) FD_APPEND(gslots[i].fd[IN]); TAILQ_FOREACH(req, &reqhead, entry) FD_APPEND(req->fd); TAILQ_FOREACH(inv, &invhead, entry) FD_APPEND(inv->fd); TAILQ_FOREACH(f, &friendhead, entry) { /* Only monitor friends that are online */ if (tox_friend_get_connection_status(tox, f->num, NULL) != TOX_CONNECTION_NONE) { FD_APPEND(f->fd[FTEXT_IN]); if (f->tx.state == TRANSFER_NONE) FD_APPEND(f->fd[FFILE_IN]); if (!f->av.state || (f->av.state & TRANSMITTING)) FD_APPEND(f->fd[FCALL_IN]); } FD_APPEND(f->fd[FREMOVE]); } TAILQ_FOREACH(c, &confhead, entry) { FD_APPEND(c->fd[CLEAVE]); FD_APPEND(c->fd[CTITLE_IN]); FD_APPEND(c->fd[CTEXT_IN]); FD_APPEND(c->fd[CINVITE]); } tv.tv_sec = 0; tv.tv_usec = interval(tox, toxav) * 1000; n = select(fdmax + 1, &rfds, NULL, NULL, &tv); if (n < 0) { if (errno == EINTR) continue; eprintf("select:"); } /* Check for broken transfers (friend went offline, file_out was closed) */ TAILQ_FOREACH(f, &friendhead, entry) { if (tox_friend_get_connection_status(tox, f->num, NULL) == TOX_CONNECTION_NONE) { canceltxtransfer(f); cancelrxtransfer(f); } if (f->rxstate != TRANSFER_INPROGRESS) continue; fd = fifoopen(f->dirfd, ffiles[FFILE_OUT]); if (fd < 0) { cancelrxtransfer(f); } else { close(fd); } } /* Accept pending transfers if any */ TAILQ_FOREACH(f, &friendhead, entry) { if (tox_friend_get_connection_status(tox, f->num, NULL) == 0) continue; if (f->rxstate == TRANSFER_NONE) continue; if (f->fd[FFILE_OUT] >= 0) continue; r = fifoopen(f->dirfd, ffiles[FFILE_OUT]); if (r < 0) continue; f->fd[FFILE_OUT] = r; if (!tox_file_control(tox, f->num, f->tx.fnum, TOX_FILE_CONTROL_RESUME, NULL)) { weprintf("Failed to accept transfer from receiver\n"); cancelrxtransfer(f); } else { logmsg(": %s : Rx > Accepted\n", f->name); f->rxstate = TRANSFER_INPROGRESS; } } /* Answer pending calls */ TAILQ_FOREACH(f, &friendhead, entry) { if (tox_friend_get_connection_status(tox, f->num, NULL) == TOX_CONNECTION_NONE) continue; if (!f->av.state) continue; fd = fifoopen(f->dirfd, ffiles[FCALL_OUT]); if (fd < 0) { f->av.state &= ~INCOMING; } else { f->av.state |= INCOMING; if (f->fd[FCALL_OUT] >= 0) close(fd); else f->fd[FCALL_OUT] = fd; } if (f->av.state == TRANSMITTING) cancelcall(f, "Hung up"); if (f->av.state & RINGING) { if (f->av.state & OUTGOING) { c1 = time(NULL); if (c1 > c0 + RINGINGDELAY) cancelcall(f, "Timeout"); } if (!(f->av.state & INCOMING)) continue; if (!toxav_answer(toxav, f->num, AUDIOBITRATE, 0, NULL)) { weprintf("Failed to answer call\n"); if (!toxav_call_control(toxav, f->num, TOXAV_CALL_CONTROL_CANCEL, NULL)) weprintf("Failed to reject call\n"); break; } f->av.state &= ~RINGING; f->av.state |= TRANSMITTING; logmsg(": %s : Audio > Answered\n", f->name); ftruncate(f->fd[FCALL_STATE], 0); lseek(f->fd[FCALL_STATE], 0, SEEK_SET); dprintf(f->fd[FCALL_STATE], "transmitting\n"); } } if (n == 0) continue; for (i = 0; i < LEN(gslots); i++) { if (FD_ISSET(gslots[i].fd[IN], &rfds) == 0) continue; (*gslots[i].cb)(NULL); } for (req = TAILQ_FIRST(&reqhead); req; req = rtmp) { rtmp = TAILQ_NEXT(req, entry); if (FD_ISSET(req->fd, &rfds) == 0) continue; reqfifo.name = req->idstr; reqfifo.flags = O_RDONLY | O_NONBLOCK; if (fiforead(gslots[REQUEST].fd[OUT], &req->fd, reqfifo, &ch, 1) != 1) continue; if (ch != '0' && ch != '1') continue; frnum = tox_friend_add_norequest(tox, req->id, NULL); if (frnum == UINT32_MAX) { weprintf("Failed to add friend %s\n", req->idstr); fiforeset(gslots[REQUEST].fd[OUT], &req->fd, reqfifo); continue; } if (ch == '1') { friendcreate(frnum); logmsg("Request : %s > Accepted\n", req->idstr); datasave(); } else { tox_friend_delete(tox, frnum, NULL); logmsg("Request : %s > Rejected\n", req->idstr); } unlinkat(gslots[REQUEST].fd[OUT], req->idstr, 0); close(req->fd); TAILQ_REMOVE(&reqhead, req, entry); free(req->msg); free(req); } for (inv = TAILQ_FIRST(&invhead); inv; inv = itmp) { itmp = TAILQ_NEXT(inv, entry); if (FD_ISSET(inv->fd, &rfds) == 0) continue; invfifo.name = inv->fifoname; invfifo.flags = O_RDONLY | O_NONBLOCK; if (fiforead(gslots[CONF].fd[OUT], &inv->fd, invfifo, &ch, 1) != 1) continue; if (ch != '0' && ch != '1') continue; else if (ch == '1'){ cnum = tox_conference_join(tox, inv->inviter, (uint8_t *)inv->cookie, inv->cookielen, NULL); if(cnum == UINT32_MAX) weprintf("Failed to join conference\n"); else confcreate(cnum); } unlinkat(gslots[CONF].fd[OUT], inv->fifoname, 0); close(inv->fd); TAILQ_REMOVE(&invhead, inv, entry); free(inv->fifoname); free(inv->cookie); free(inv); } for (c = TAILQ_FIRST(&confhead); c; c = ctmp) { ctmp = TAILQ_NEXT(c, entry); if (FD_ISSET(c->fd[CINVITE], &rfds)) invitefriend(c); if (FD_ISSET(c->fd[CLEAVE], &rfds)) { logmsg("- %s > Leave\n", c->numstr); tox_conference_delete(tox, c->num, NULL); confdestroy(c); } if (FD_ISSET(c->fd[CTEXT_IN], &rfds)) sendconftext(c); if (FD_ISSET(c->fd[CTITLE_IN], &rfds)) updatetitle(c); } for (f = TAILQ_FIRST(&friendhead); f; f = ftmp) { ftmp = TAILQ_NEXT(f, entry); if (FD_ISSET(f->fd[FTEXT_IN], &rfds)) sendfriendtext(f); if (FD_ISSET(f->fd[FFILE_IN], &rfds) && f->tx.state == TRANSFER_NONE) { /* Prepare a new transfer */ snprintf(tstamp, sizeof(tstamp), "%lu", (unsigned long)time(NULL)); f->tx.fnum = tox_file_send(tox, f->num, TOX_FILE_KIND_DATA, UINT64_MAX, NULL, (uint8_t *)tstamp, strlen(tstamp), NULL); if (f->tx.fnum == UINT32_MAX) { weprintf("Failed to initiate new transfer\n"); fiforeset(f->dirfd, &f->fd[FFILE_IN], ffiles[FFILE_IN]); } else { f->tx.state = TRANSFER_INITIATED; logmsg(": %s : Tx > Initiated\n", f->name); } } if (FD_ISSET(f->fd[FCALL_IN], &rfds)) { if (!f->av.state) { if (!toxav_call(toxav, f->num, AUDIOBITRATE, 0, NULL)) { weprintf("Failed to call\n"); fiforeset(f->dirfd, &f->fd[FCALL_IN], ffiles[FCALL_IN]); break; } f->av.state |= RINGING; logmsg(": %s : Audio > Tx Inviting\n", f->name); } if (!(f->av.state & OUTGOING)) { c0 = time(NULL); f->av.n = 0; f->av.lastsent.tv_sec = 0; f->av.lastsent.tv_nsec = 0; f->av.frame = malloc(sizeof(int16_t) * framesize); if (!f->av.frame) eprintf("malloc:"); f->av.state |= OUTGOING; } else { if (f->av.state & TRANSMITTING) sendfriendcalldata(f); } } if (FD_ISSET(f->fd[FREMOVE], &rfds)) removefriend(f); } } } static void initshutdown(int sig) { running = 0; } static void toxshutdown(void) { struct friend *f, *ftmp; struct request *r, *rtmp; struct conference *c, *ctmp; struct invite *i, *itmp; size_t s, m; logmsg("Shutdown\n"); datasave(); /* Friends */ for (f = TAILQ_FIRST(&friendhead); f; f = ftmp) { ftmp = TAILQ_NEXT(f, entry); frienddestroy(f); } /* Conferences */ for (c = TAILQ_FIRST(&confhead); c; c=ctmp) { ctmp = TAILQ_NEXT(c, entry); confdestroy(c); } /* Requests */ for (r = TAILQ_FIRST(&reqhead); r; r = rtmp) { rtmp = TAILQ_NEXT(r, entry); if (gslots[REQUEST].fd[OUT] != -1) { unlinkat(gslots[REQUEST].fd[OUT], r->idstr, 0); if (r->fd != -1) close(r->fd); } TAILQ_REMOVE(&reqhead, r, entry); free(r->msg); free(r); } /* Invites */ for (i = TAILQ_FIRST(&invhead); i; i = itmp) { itmp = TAILQ_NEXT(i, entry); if(gslots[CONF].fd[OUT] != -1) { unlinkat(gslots[CONF].fd[OUT], i->fifoname, 0); if (i->fd != -1) close(i->fd); } TAILQ_REMOVE(&invhead, i, entry); free(i->fifoname); free(i->cookie); free(i); } /* Global files and slots */ for (s = 0; s < LEN(gslots); s++) { for (m = 0; m < LEN(gfiles); m++) { if (gslots[s].dirfd != -1) { unlinkat(gslots[s].dirfd, gfiles[m].name, (gslots[s].outisfolder && m == OUT) ? AT_REMOVEDIR : 0); if (gslots[s].fd[m] != -1) close(gslots[s].fd[m]); } } rmdir(gslots[s].name); } unlink("id"); if (idfd != -1) close(idfd); toxav_kill(toxav); tox_kill(tox); } static void usage(void) { eprintf("usage: %s [-4|-6] [-E|-e] [-T|-t] [-P|-p] [-q] [savefile]\n", argv0); } int main(int argc, char *argv[]) { ARGBEGIN { case '4': ipv6 = 0; break; case '6': ipv6 = 1; break; case 'E': encryptsavefile = 1; break; case 'e': encryptsavefile = 0; break; case 'T': tcp = 1; break; case 't': tcp = 0; break; case 'P': proxy = 1; break; case 'p': proxy = 0; break; case 'q': quiet = 1; break; default: usage(); } ARGEND; if (argc > 1) usage(); if (argc == 1) savefile = *argv; setbuf(stdout, NULL); signal(SIGHUP, initshutdown); signal(SIGINT, initshutdown); signal(SIGQUIT, initshutdown); signal(SIGTERM, initshutdown); signal(SIGPIPE, SIG_IGN); if (!quiet) printrat(); toxinit(); localinit(); friendload(); loop(); toxshutdown(); return 0; }