2 * Citadel/UX message support routines
3 * see copyright.txt for copyright information
21 #define MAXWORDBUF 256
26 char text[MAXWORDBUF];
30 struct AttachedFile *next;
35 void sttybbs(int cmd);
36 int struncmp(char *lstr, char *rstr, int len);
37 int fmout(int width, FILE *fp, char pagin, int height, int starting_lp, char subst);
38 int haschar(char *st, int ch);
39 int checkpagin(int lp, int pagin, int height);
40 void getline(char *string, int lim);
41 void formout(char *name);
43 void newprompt(char *prompt, char *str, int len);
44 int file_checksum(char *filename);
45 void color(int colornum);
46 void do_edit(char *desc, char *read_cmd, char *check_cmd, char *write_cmd);
49 long msg_arr[MAXMSGS];
51 extern char room_name[];
52 extern unsigned room_flags;
53 extern long highest_msg_read;
54 extern struct CtdlServInfo serv_info;
57 extern int screenwidth;
58 extern int screenheight;
59 extern long maxmsgnum;
62 extern char is_room_aide;
63 extern char fullname[];
65 extern unsigned userflags;
66 extern char sigcaught;
67 extern char editor_path[];
68 extern char printcmd[];
69 extern int rc_allow_attachments;
70 extern int rc_display_message_numbers;
72 extern int editor_pid;
76 void ka_sigcatch(int signum) {
79 signal(SIGALRM, ka_sigcatch);
86 * server keep-alive version of wait() (needed for external editor)
88 pid_t ka_wait(pid_t *kstatus)
93 signal(SIGALRM, ka_sigcatch);
97 } while (errno==EINTR);
98 signal(SIGALRM,SIG_IGN);
105 * version of system() that uses ka_wait()
107 int ka_system(char *shc)
116 perror("Cannot fork");
118 return((pid_t)childpid);
122 execlp("/bin/sh","sh","-c",shc,NULL);
128 waitpid = ka_wait(&retcode);
129 } while (waitpid != childpid);
139 * add a newline to the buffer...
141 void add_newline(struct cittext *textlist)
146 while (ptr->next != NULL) ptr = ptr->next;
148 while (ptr->text[strlen(ptr->text)-1]==32)
149 ptr->text[strlen(ptr->text)-1] = 0;
150 /* strcat(ptr->text,"\n"); */
152 ptr->next = (struct cittext *)
153 malloc(sizeof(struct cittext));
156 strcpy(ptr->text,"");
161 * add a word to the buffer...
163 void add_word(struct cittext *textlist, char *wordbuf)
169 while (ptr->next != NULL) ptr = ptr->next;
171 if (3+strlen(ptr->text)+strlen(wordbuf) > screenwidth) {
172 ptr->next = (struct cittext *)
173 malloc(sizeof(struct cittext));
176 strcpy(ptr->text,"");
179 strcat(ptr->text,wordbuf);
180 strcat(ptr->text," ");
185 * begin editing of an opened file pointed to by fp, beginning at position pos.
187 void citedit(FILE *fp, long int base_pos)
189 int a,prev,finished,b,last_space;
191 struct cittext *textlist = NULL;
193 char wordbuf[MAXWORDBUF];
195 time_t last_server_msg,now;
198 * we're going to keep track of the last time we talked to
199 * the server, so we can periodically send keep-alive messages
200 * out so it doesn't time out.
202 time(&last_server_msg);
204 /* first, load the text into the buffer */
205 fseek(fp,base_pos,0);
206 textlist = (struct cittext *)malloc(sizeof(struct cittext));
207 textlist->next = NULL;
208 strcpy(textlist->text,"");
212 while (a=getc(fp), a>=0) {
214 if ((a==32)||(a==9)||(a==13)||(a==10)) {
215 add_word(textlist,wordbuf);
217 if ((prev==13)||(prev==10)) {
218 add_word(textlist,"\n");
219 add_newline(textlist);
220 add_word(textlist,"");
224 wordbuf[strlen(wordbuf)+1] = 0;
225 wordbuf[strlen(wordbuf)] = a;
227 if (strlen(wordbuf)+3 > screenwidth) {
228 add_word(textlist,wordbuf);
236 prev = (appending ? 13 : (-1));
243 if ((a==32)&&(prev==13)) {
244 add_word(textlist,"\n");
245 add_newline(textlist);
248 if (strlen(wordbuf)>0) {
249 wordbuf[strlen(wordbuf)-1] = 0;
257 if (strlen(wordbuf)==0) finished = 1;
259 for (b=0; b<strlen(wordbuf); ++b)
260 if (wordbuf[b]==32) {
262 add_word(textlist,wordbuf);
263 strcpy(wordbuf,&wordbuf[b+1]);
266 add_word(textlist,wordbuf);
272 wordbuf[strlen(wordbuf)+1] = 0;
273 wordbuf[strlen(wordbuf)] = a;
275 if ((strlen(wordbuf)+3) > screenwidth) {
277 for (b=0; b<strlen(wordbuf); ++b)
278 if (wordbuf[b]==32) last_space = b;
280 for (b=0; b<strlen(wordbuf); ++b)
281 if (wordbuf[b]==32) {
283 add_word(textlist,wordbuf);
284 strcpy(wordbuf,&wordbuf[b+1]);
287 for (b=0; b<strlen(wordbuf); ++b) {
292 printf("\n%s",wordbuf);
295 add_word(textlist,wordbuf);
302 /* this check implements the server keep-alive */
304 if ( (now - last_server_msg) > S_KEEPALIVE ) {
307 last_server_msg = now;
310 } while (finished==0);
312 /* write the buffer back to disk */
313 fseek(fp,base_pos,0);
314 for (ptr=textlist; ptr!=NULL; ptr=ptr->next) {
315 fprintf(fp,"%s",ptr->text);
320 /* and deallocate the memory we used */
321 while (textlist!=NULL) {
329 int read_message(long int num, char pagin) /* Read a message from the server */
331 /* 0 = normal read, 1 = read with pagination, 2 = header */
345 sprintf(buf,"MSG0 %ld|%d",num,(pagin==READ_HEADER ? 1 : 0));
349 printf("*** msg #%ld: %s\n",num,buf);
351 lines_printed = checkpagin(lines_printed,pagin,screenheight);
356 strcpy(m_subject,"");
359 lines_printed = checkpagin(lines_printed,pagin,screenheight);
361 if (pagin == 1) color(3);
364 while(serv_gets(buf), strcmp(buf,"000")) {
369 checkpagin(lines_printed,
377 strcpy(reply_to,"nobody...xxxxx");
378 while(serv_gets(buf), struncmp(buf,"text",4)) {
379 if (!struncmp(buf,"nhdr=yes",8)) nhdr=1;
380 if (!struncmp(buf,"from=",5)) {
381 strcpy(from,&buf[5]);
383 if (nhdr==1) buf[0]='_';
384 if (!struncmp(buf,"type=",5))
385 format_type=atoi(&buf[5]);
386 if ((!struncmp(buf,"msgn=",5))&&(rc_display_message_numbers)) {
387 printf("[#%s] ",&buf[5]);
389 if (!struncmp(buf,"from=",5)) {
390 printf("from %s ",&buf[5]);
392 if (!struncmp(buf,"subj=",5))
393 strcpy(m_subject,&buf[5]);
394 if ((!struncmp(buf,"hnod=",5))
395 && (strucmp(&buf[5],serv_info.serv_humannode)))
396 printf("(%s) ",&buf[5]);
397 if ((!struncmp(buf,"room=",5))
398 && (strucmp(&buf[5],room_name)))
399 printf("in %s> ",&buf[5]);
401 if (!struncmp(buf,"node=",5)) {
402 if ( (room_flags&QR_NETWORK)
403 || ((strucmp(&buf[5],serv_info.serv_nodename)
404 &&(strucmp(&buf[5],serv_info.serv_fqdn)))))
406 printf("@%s ",&buf[5]);
408 if ((!strucmp(&buf[5],serv_info.serv_nodename))
409 ||(!strucmp(&buf[5],serv_info.serv_fqdn)))
411 strcpy(reply_to,from);
414 sprintf(reply_to,"%s @ %s",from,&buf[5]);
418 if (!struncmp(buf,"rcpt=",5))
419 printf("to %s ",&buf[5]);
420 if (!struncmp(buf,"time=",5)) {
422 tm=(struct tm *)localtime(&now);
423 strcpy(buf,asctime(tm)); buf[strlen(buf)-1]=0;
424 strcpy(&buf[16],&buf[19]);
425 printf("%s ",&buf[4]);
438 if (pagin == 1 ) color(2);
440 lines_printed = checkpagin(lines_printed,pagin,screenheight);
442 if (strlen(m_subject)>0) {
443 printf("Subject: %s\n",m_subject);
445 lines_printed = checkpagin(lines_printed,pagin,screenheight);
448 if (format_type == 0) {
449 fr=fmout(screenwidth,NULL,
450 ((pagin==1) ? 1 : 0),
451 screenheight,(-1),1);
454 while(serv_gets(buf), strcmp(buf,"000")) {
457 lines_printed = lines_printed + 1 +
458 (strlen(buf)/screenwidth);
460 checkpagin(lines_printed,pagin,screenheight);
467 lines_printed = checkpagin(lines_printed,pagin,screenheight);
469 if (pagin == 1) color(7);
475 * replace string function for the built-in editor
477 void replace_string(char *filename, long int startpos)
486 int substitutions = 0;
489 printf("Enter text to be replaced:\n: ");
490 getline(srch_str,128);
491 if (strlen(srch_str)==0) return;
493 printf("Enter text to replace it with:\n: ");
494 getline(rplc_str,128);
496 fp=fopen(filename,"r+");
497 if (fp==NULL) return;
500 fseek(fp,startpos,0);
502 while (a=getc(fp), a>0) {
504 buf[strlen(buf)+1] = 0;
505 buf[strlen(buf)] = a;
506 if ( strlen(buf) >= strlen(srch_str) ) {
507 ptr=&buf[strlen(buf)-strlen(srch_str)];
508 if (!struncmp(ptr,srch_str,strlen(srch_str))) {
509 strcpy(ptr,rplc_str);
513 if (strlen(buf)>384) {
516 fwrite((char *)buf,128,1,fp);
517 strcpy(buf,&buf[128]);
523 if (strlen(buf)>0) fwrite((char *)buf,strlen(buf),1,fp);
526 printf("<R>eplace made %d substitution(s).\n\n",substitutions);
530 int make_message(char *filename, char *recipient, int anon_type, int format_type, int mode, char *boundary)
531 /* temporary file name */
532 /* NULL if it's not mail */
533 /* see MES_ types in header file */
543 struct AttachedFile *AttachList = NULL;
544 struct AttachedFile *Aptr;
547 if (mode==2) if (strlen(editor_path)==0) {
548 printf("*** No editor available, using built-in editor\n");
553 strcpy(datestr,asctime(localtime(&now)));
554 datestr[strlen(datestr)-1] = 0;
556 if (room_flags & QR_ANONONLY) {
560 printf(" %s from %s",datestr,fullname);
561 if (strlen(recipient)>0) printf(" to %s",recipient);
567 if (mode==1) printf("(Press ctrl-d when finished)\n");
569 fp=fopen(filename,"r");
571 fmout(screenwidth,fp,0,screenheight,0,0);
576 fp=fopen(filename,"w");
584 fp=fopen(filename,"r+");
591 fp=fopen(filename,"w");
593 a=inkey(); if (a==255) a=32;
599 if (a==10) putc(13,stdout);
605 e_ex_code = 1; /* start with a failed exit code */
607 cksum = file_checksum(filename);
609 chmod(filename,0600);
611 execlp(editor_path,editor_path,filename,NULL);
614 if (editor_pid>0) do {
616 b=ka_wait(&e_ex_code);
617 } while((b!=editor_pid)&&(b>=0));
624 if (file_checksum(filename) == cksum) {
625 printf("*** Aborted message.\n");
628 if (e_ex_code==0) goto MEFIN;
631 MECR1: printf("Entry cmd (? for options) -> ");
633 if (b==NEXT_KEY) b='n';
634 if (b==STOP_KEY) b='s';
635 b=(b&127); b=tolower(b);
641 if (b=='a') { printf("Abort\n"); goto MEABT; }
642 if (b=='c') { printf("Continue\n"); goto ME1; }
643 if (b=='s') { printf("Save message\n"); goto MEFIN; }
645 printf("Print formatted\n");
646 printf(" %s from %s",datestr,fullname);
647 if (strlen(recipient)>0) printf(" to %s",recipient);
649 fp=fopen(filename,"r");
651 fmout(screenwidth,fp,
652 ((userflags & US_PAGINATOR) ? 1 : 0),
660 printf("Replace string\n");
661 replace_string(filename,0L);
665 printf("Hold message\n");
668 /* if ((b=='f')&&(rc_allow_attachments==1)) { */
670 printf("attach File\n");
671 if (strlen(boundary)==0) {
672 sprintf(boundary, "Citadel-Attachment-%ld.%d",
673 (long)time(NULL), getpid() );
675 newprompt("Filename: ", buf, 68);
676 if (access(buf, R_OK)==0) {
677 Aptr = (struct AttachedFile *)
678 malloc(sizeof(struct AttachedFile));
679 strcpy(Aptr->filename, buf);
680 Aptr->next = AttachList;
684 printf("*** Cannot open %s: %s\n",
685 buf, strerror(errno));
691 MEFIN: /* Now we're done typing the message. Before returning, append any
692 * attachments the user has selected
694 if (strlen(boundary)==0) goto SKIPAT;
695 fp = fopen(filename, "a");
696 while (AttachList != NULL) {
697 sprintf(buf, "uuencode %s <%s",
698 AttachList->filename, AttachList->filename);
699 atpipe = popen(buf, "r");
700 if (atpipe != NULL) {
701 fprintf(fp,"--%s\n", boundary);
702 fprintf(fp,"Content-type: application/octet-stream;\n");
703 fprintf(fp,"%cname=%c%s%c\n",
704 9, 34, AttachList->filename, 34);
705 fprintf(fp,"Content-Transfer-Encoding: x-uudecode\n");
706 fprintf(fp,"Content-Disposition: attachment;\n");
707 fprintf(fp,"%cfilename=%c%s%c\n\n",
708 9, 34, AttachList->filename, 34);
709 while (fgets(buf, 256, atpipe)!=NULL) {
710 buf[strlen(buf)-1]=0;
711 fprintf(fp, "%s\n", buf);
716 printf("*** Cannot open %s: %s\n",
717 AttachList->filename, strerror(errno));
719 Aptr = AttachList->next;
723 fprintf(fp, "--%s--\n", boundary); /* end of attachments */
728 MEABT: printf("Are you sure? ");
729 if (yesno()==0) goto ME1;
730 MEABT2: unlink(filename);
735 * transmit message text to the server
737 void transmit_message(FILE *fp)
743 while (ch=getc(fp), (ch>=0)) {
745 if (!strcmp(buf,"000")) strcpy(buf,">000");
753 if ((ch==32)&&(strlen(buf)>200)) {
755 if (!strcmp(buf,"000")) strcpy(buf,">000");
759 if (strlen(buf)>250) {
760 if (!strcmp(buf,"000")) strcpy(buf,">000");
772 * entmsg() - edit and create a message
773 * returns 0 if message was saved
775 int entmsg(int is_reply, int c)
776 /* nonzero if this was a <R>eply command */
790 sprintf(cmd,"ENT0 0||0|%d",mode);
794 if ((strncmp(cmd,"570",3)) && (strncmp(cmd,"200",3))) {
795 printf("%s\n",&cmd[4]);
799 if (!strncmp(cmd,"570",3)) need_recp = 1;
801 if ((userflags & US_EXPERT) == 0) formout("entermsg");
807 strcpy(buf,reply_to);
810 printf("Enter recipient: ");
812 if (strlen(buf)==0) return(1);
815 else strcpy(buf,"sysop");
819 if (room_flags&QR_ANONOPT) {
820 printf("Anonymous (Y/N)? ");
824 /* if it's mail, we've got to check the validity of the recipient... */
826 sprintf(cmd,"ENT0 0|%s|%d|%d",buf,b,mode);
830 printf("%s\n",&cmd[4]);
835 /* learn the number of the newest message in in the room, so we can tell
836 * upon saving whether someone else has posted too
839 serv_puts("MSGS LAST|1");
842 printf("%s\n",&cmd[5]);
845 while (serv_gets(cmd), strcmp(cmd,"000")) {
846 msg_arr[num_msgs++] = atol(cmd);
850 /* now put together the message */
851 strcpy(boundary, "");
852 if ( make_message(temp,buf,b,0,c,boundary) != 0 ) return(2);
854 /* and send it to the server */
855 sprintf(cmd,"ENT0 1|%s|%d|%d||%s|",buf,b,mode,boundary);
859 printf("%s\n",&cmd[4]);
864 transmit_message(fp);
870 highmsg = msg_arr[num_msgs - 1];
872 serv_puts("MSGS NEW");
875 printf("%s\n",&cmd[5]);
878 while (serv_gets(cmd), strcmp(cmd,"000")) {
879 msg_arr[num_msgs++] = atol(cmd);
883 /* get new highest message number in room to set lrp for goto... */
884 maxmsgnum = msg_arr[num_msgs - 1];
886 /* now see if anyone else has posted in here */
888 for (a=0; a<num_msgs; ++a) if (msg_arr[a]>highmsg) ++b;
890 /* in the Mail> room, this algorithm always counts one message
891 * higher than in public rooms, so we decrement it by one */
895 "*** 1 additional message has been entered in this room by another user.\n");
897 "*** %d additional messages have been entered in this room by other users.\n",b);
902 void process_quote(void) { /* do editing on quoted file */
905 int line,qstart,qend;
907 /* Unlink the second temp file as soon as it's opened, so it'll get
908 * deleted even if the program dies
910 qfile = fopen(temp2,"r");
913 /* Display the quotable text with line numbers added */
915 fgets(buf,128,qfile);
916 while (fgets(buf,128,qfile)!=NULL) {
917 printf("%2d %s",++line,buf);
919 printf("Begin quoting at [ 1] : ");
921 qstart = (buf[0]==0) ? (1) : atoi(buf);
922 printf(" End quoting at [%d] : ",line);
924 qend = (buf[0]==0) ? (line) : atoi(buf);
927 fgets(buf,128,qfile);
928 tfile=fopen(temp,"w");
929 while(fgets(buf,128,qfile)!=NULL) {
930 if ((++line>=qstart)&&(line<=qend)) fprintf(tfile," >%s",buf);
932 fprintf(tfile," \n");
939 void readmsgs(int c, int rdir, int q) /* read contents of a room */
940 /* 0=Read all 1=Read new 2=Read old 3=Read last q */
941 /* 1=Forward (-1)=Reverse */
942 /* Number of msgs to read (if c==3) */
951 char targ[ROOMNAMELEN];
953 signal(SIGINT,SIG_IGN);
954 signal(SIGQUIT,SIG_IGN);
956 if (c<0) b=(MAXMSGS-1);
959 sprintf(prtfile,"/tmp/CPrt%d",getpid());
964 case 0: strcat(cmd,"ALL");
966 case 1: strcat(cmd,"NEW");
968 case 2: strcat(cmd,"OLD");
970 case 3: sprintf(&cmd[strlen(cmd)], "LAST|%d", q);
976 printf("%s\n",&cmd[5]);
979 while (serv_gets(cmd), strcmp(cmd,"000")) {
980 msg_arr[num_msgs++] = atol(cmd);
986 /* this loop cycles through each message... */
987 start = ( (rdir==1) ? 0 : (num_msgs-1) );
988 for (a=start; ((a<num_msgs)&&(a>=0)); a=a+rdir) {
989 while (msg_arr[a]==0L) {
990 a=a+rdir; if ((a==MAXMSGS)||(a==(-1))) return;
993 RAGAIN: pagin=((arcflag==0)&&(quotflag==0)&&
994 (userflags & US_PAGINATOR)) ? 1 : 0;
996 /* if we're doing a quote, set the screenwidth to 72 temporarily */
998 hold_sw = screenwidth;
1002 /* now read the message... */
1003 e=read_message(msg_arr[a],pagin);
1005 /* ...and set the screenwidth back if we have to */
1007 screenwidth = hold_sw;
1009 RMSGREAD: fflush(stdout);
1010 highest_msg_read = msg_arr[a];
1012 freopen("/dev/tty","r+",stdout);
1017 freopen("/dev/tty","r+",stdout);
1021 freopen(prtfile,"r",stdin);
1022 sttybbs(SB_RESTORE);
1023 ka_system(printcmd);
1024 sttybbs(SB_NO_INTR);
1030 } while((g!=f)&&(g>=0));
1031 printf("Message printed.\n");
1034 if ((userflags&US_NOPROMPT)||(e==2)) e='n';
1036 printf("(%d) ",num_msgs-a-1);
1037 if (is_mail==1) printf("<R>eply ");
1038 if (strlen(printcmd)>0) printf("<P>rint ");
1039 printf("<B>ack <A>gain <Q>uote <H>eader <N>ext <S>top -> ");
1042 e=(inkey()&127); e=tolower(e);
1043 /* return key same as <N> */ if (e==13) e='n';
1044 /* del/move for aides only */ if (!is_room_aide) if ((e=='d')||(e=='m')) e=0;
1045 /* print only if available */ if ((e=='p')&&(strlen(printcmd)==0)) e=0;
1046 /* can't move from Mail> */ if ((e=='m')&&(is_mail==1)) e=0;
1047 /* can't reply in public rms */ if ((e=='r')&&(is_mail!=1)) e=0;
1048 } while((e!='a')&&(e!='n')&&(e!='s')
1049 &&(e!='d')&&(e!='m')&&(e!='p')
1050 &&(e!='q')&&(e!='b')&&(e!='h')
1053 case 's': printf("Stop\r"); break;
1054 case 'a': printf("Again\r"); break;
1055 case 'd': printf("Delete\r"); break;
1056 case 'm': printf("Move\r"); break;
1057 case 'n': printf("Next\r"); break;
1058 case 'p': printf("Print\r"); break;
1059 case 'q': printf("Quote\r"); break;
1060 case 'b': printf("Back\r"); break;
1061 case 'h': printf("Header\r"); break;
1062 case 'r': printf("Reply\r"); break;
1064 if (userflags & US_DISAPPEAR)
1065 printf("%75s\r","");
1071 case 'p': fflush(stdout);
1072 freopen(prtfile,"w",stdout);
1075 case 'q': fflush(stdout);
1076 freopen(temp2,"w",stdout);
1080 case 'a': goto RAGAIN;
1081 case 'b': a=a-(rdir*2);
1083 case 'm': newprompt("Enter target room: ",
1084 targ,ROOMNAMELEN-1);
1085 if (strlen(targ)>0) {
1086 sprintf(cmd,"MOVE %ld|%s",
1090 printf("%s\n",&cmd[4]);
1091 if (cmd[0]=='2') msg_arr[a]=0L;
1096 if (cmd[0]!='2') goto RMSGREAD;
1098 case 'd': printf("*** Delete this message? ");
1100 sprintf(cmd,"DELE %ld",msg_arr[a]);
1103 printf("%s\n",&cmd[4]);
1104 if (cmd[0]=='2') msg_arr[a]=0L;
1110 case 'h': read_message(msg_arr[a],READ_HEADER);
1112 case 'r': entmsg(1,(DEFAULT_ENTRY==46 ? 2 : 0));
1115 } /* end for loop */
1116 } /* end read routine */
1122 * View and edit a system message
1124 void edit_system_message(char *which_message)
1130 sprintf(desc, "system message '%s'", which_message);
1131 sprintf(read_cmd, "MESG %s", which_message);
1132 sprintf(write_cmd, "EMSG %s", which_message);
1133 do_edit(desc, read_cmd, "NOOP", write_cmd);