2 * Citadel/UX message support routines
3 * see copyright.txt for copyright information
10 #include <sys/types.h>
30 #define MAXWORDBUF 256
35 char text[MAXWORDBUF];
38 void sttybbs(int cmd);
39 int struncmp(char *lstr, char *rstr, int len);
40 int fmout(int width, FILE *fp, char pagin, int height, int starting_lp, char subst);
41 int haschar(char *st, int ch);
42 int checkpagin(int lp, int pagin, int height);
43 void getline(char *string, int lim);
44 void formout(char *name);
46 void newprompt(char *prompt, char *str, int len);
47 int file_checksum(char *filename);
48 void color(int colornum);
49 void do_edit(char *desc, char *read_cmd, char *check_cmd, char *write_cmd);
52 long msg_arr[MAXMSGS];
54 extern char room_name[];
55 extern unsigned room_flags;
56 extern long highest_msg_read;
57 extern struct CtdlServInfo serv_info;
60 extern int screenwidth;
61 extern int screenheight;
62 extern long maxmsgnum;
65 extern char is_room_aide;
66 extern char fullname[];
68 extern unsigned userflags;
69 extern char sigcaught;
70 extern char editor_path[];
71 extern char printcmd[];
72 extern int rc_allow_attachments;
73 extern int rc_display_message_numbers;
74 extern int rc_force_mail_prompts;
76 extern int editor_pid;
80 void ka_sigcatch(int signum) {
83 signal(SIGALRM, ka_sigcatch);
90 * server keep-alive version of wait() (needed for external editor)
92 pid_t ka_wait(int *kstatus)
97 signal(SIGALRM, ka_sigcatch);
101 } while (errno==EINTR);
102 signal(SIGALRM,SIG_IGN);
109 * version of system() that uses ka_wait()
111 int ka_system(char *shc)
120 perror("Cannot fork");
122 return((pid_t)childpid);
126 execlp("/bin/sh","sh","-c",shc,NULL);
132 waitpid = ka_wait(&retcode);
133 } while (waitpid != childpid);
143 * add a newline to the buffer...
145 void add_newline(struct cittext *textlist)
150 while (ptr->next != NULL) ptr = ptr->next;
152 while (ptr->text[strlen(ptr->text)-1]==32)
153 ptr->text[strlen(ptr->text)-1] = 0;
154 /* strcat(ptr->text,"\n"); */
156 ptr->next = (struct cittext *)
157 malloc(sizeof(struct cittext));
160 strcpy(ptr->text,"");
165 * add a word to the buffer...
167 void add_word(struct cittext *textlist, char *wordbuf)
173 while (ptr->next != NULL) ptr = ptr->next;
175 if (3+strlen(ptr->text)+strlen(wordbuf) > screenwidth) {
176 ptr->next = (struct cittext *)
177 malloc(sizeof(struct cittext));
180 strcpy(ptr->text,"");
183 strcat(ptr->text,wordbuf);
184 strcat(ptr->text," ");
189 * begin editing of an opened file pointed to by fp, beginning at position pos.
191 void citedit(FILE *fp, long int base_pos)
193 int a,prev,finished,b,last_space;
195 struct cittext *textlist = NULL;
197 char wordbuf[MAXWORDBUF];
199 time_t last_server_msg,now;
202 * we're going to keep track of the last time we talked to
203 * the server, so we can periodically send keep-alive messages
204 * out so it doesn't time out.
206 time(&last_server_msg);
208 /* first, load the text into the buffer */
209 fseek(fp,base_pos,0);
210 textlist = (struct cittext *)malloc(sizeof(struct cittext));
211 textlist->next = NULL;
212 strcpy(textlist->text,"");
216 while (a=getc(fp), a>=0) {
218 if ((a==32)||(a==9)||(a==13)||(a==10)) {
219 add_word(textlist,wordbuf);
221 if ((prev==13)||(prev==10)) {
222 add_word(textlist,"\n");
223 add_newline(textlist);
224 add_word(textlist,"");
228 wordbuf[strlen(wordbuf)+1] = 0;
229 wordbuf[strlen(wordbuf)] = a;
231 if (strlen(wordbuf)+3 > screenwidth) {
232 add_word(textlist,wordbuf);
240 prev = (appending ? 13 : (-1));
247 if ((a==32)&&(prev==13)) {
248 add_word(textlist,"\n");
249 add_newline(textlist);
252 if (strlen(wordbuf)>0) {
253 wordbuf[strlen(wordbuf)-1] = 0;
261 if (strlen(wordbuf)==0) finished = 1;
263 for (b=0; b<strlen(wordbuf); ++b)
264 if (wordbuf[b]==32) {
266 add_word(textlist,wordbuf);
267 strcpy(wordbuf,&wordbuf[b+1]);
270 add_word(textlist,wordbuf);
276 wordbuf[strlen(wordbuf)+1] = 0;
277 wordbuf[strlen(wordbuf)] = a;
279 if ((strlen(wordbuf)+3) > screenwidth) {
281 for (b=0; b<strlen(wordbuf); ++b)
282 if (wordbuf[b]==32) last_space = b;
284 for (b=0; b<strlen(wordbuf); ++b)
285 if (wordbuf[b]==32) {
287 add_word(textlist,wordbuf);
288 strcpy(wordbuf,&wordbuf[b+1]);
291 for (b=0; b<strlen(wordbuf); ++b) {
296 printf("\n%s",wordbuf);
299 add_word(textlist,wordbuf);
306 /* this check implements the server keep-alive */
308 if ( (now - last_server_msg) > S_KEEPALIVE ) {
311 last_server_msg = now;
314 } while (finished==0);
316 /* write the buffer back to disk */
317 fseek(fp,base_pos,0);
318 for (ptr=textlist; ptr!=NULL; ptr=ptr->next) {
319 fprintf(fp,"%s",ptr->text);
324 /* and deallocate the memory we used */
325 while (textlist!=NULL) {
333 int read_message(long int num, char pagin) /* Read a message from the server */
335 /* 0 = normal read, 1 = read with pagination, 2 = header */
349 sprintf(buf,"MSG0 %ld|%d",num,(pagin==READ_HEADER ? 1 : 0));
353 printf("*** msg #%ld: %s\n",num,buf);
355 lines_printed = checkpagin(lines_printed,pagin,screenheight);
360 strcpy(m_subject,"");
363 lines_printed = checkpagin(lines_printed,pagin,screenheight);
365 if (pagin == 1) color(3);
368 while(serv_gets(buf), strcmp(buf,"000")) {
373 checkpagin(lines_printed,
381 strcpy(reply_to,"nobody...xxxxx");
382 while(serv_gets(buf), struncmp(buf,"text",4)) {
383 if (!struncmp(buf,"nhdr=yes",8)) nhdr=1;
384 if (!struncmp(buf,"from=",5)) {
385 strcpy(from,&buf[5]);
387 if (nhdr==1) buf[0]='_';
388 if (!struncmp(buf,"type=",5))
389 format_type=atoi(&buf[5]);
390 if ((!struncmp(buf,"msgn=",5))&&(rc_display_message_numbers)) {
392 printf("[#%s] ",&buf[5]);
394 if (!struncmp(buf,"from=",5)) {
396 printf("from %s ",&buf[5]);
398 if (!struncmp(buf,"subj=",5))
399 strcpy(m_subject,&buf[5]);
400 if ((!struncmp(buf,"hnod=",5))
401 && (strucmp(&buf[5],serv_info.serv_humannode))) {
403 printf("(%s) ",&buf[5]);
405 if ((!struncmp(buf,"room=",5))
406 && (strucmp(&buf[5],room_name))) {
408 printf("in %s> ",&buf[5]);
411 if (!struncmp(buf,"node=",5)) {
412 if ( (room_flags&QR_NETWORK)
413 || ((strucmp(&buf[5],serv_info.serv_nodename)
414 &&(strucmp(&buf[5],serv_info.serv_fqdn)))))
417 printf("@%s ",&buf[5]);
419 if ((!strucmp(&buf[5],serv_info.serv_nodename))
420 ||(!strucmp(&buf[5],serv_info.serv_fqdn)))
422 strcpy(reply_to,from);
425 sprintf(reply_to,"%s @ %s",from,&buf[5]);
429 if (!struncmp(buf,"rcpt=",5)) {
431 printf("to %s ",&buf[5]);
433 if (!struncmp(buf,"time=",5)) {
435 tm=(struct tm *)localtime(&now);
436 strcpy(buf,asctime(tm)); buf[strlen(buf)-1]=0;
437 strcpy(&buf[16],&buf[19]);
439 printf("%s ",&buf[4]);
452 if (pagin == 1 ) color(2);
454 lines_printed = checkpagin(lines_printed,pagin,screenheight);
456 if (strlen(m_subject)>0) {
457 printf("Subject: %s\n",m_subject);
459 lines_printed = checkpagin(lines_printed,pagin,screenheight);
462 if (format_type == 0) {
463 fr=fmout(screenwidth,NULL,
464 ((pagin==1) ? 1 : 0),
465 screenheight,(-1),1);
468 while(serv_gets(buf), strcmp(buf,"000")) {
471 lines_printed = lines_printed + 1 +
472 (strlen(buf)/screenwidth);
474 checkpagin(lines_printed,pagin,screenheight);
481 lines_printed = checkpagin(lines_printed,pagin,screenheight);
483 if (pagin == 1) color(7);
489 * replace string function for the built-in editor
491 void replace_string(char *filename, long int startpos)
500 int substitutions = 0;
503 printf("Enter text to be replaced:\n: ");
504 getline(srch_str,128);
505 if (strlen(srch_str)==0) return;
507 printf("Enter text to replace it with:\n: ");
508 getline(rplc_str,128);
510 fp=fopen(filename,"r+");
511 if (fp==NULL) return;
514 fseek(fp,startpos,0);
516 while (a=getc(fp), a>0) {
518 buf[strlen(buf)+1] = 0;
519 buf[strlen(buf)] = a;
520 if ( strlen(buf) >= strlen(srch_str) ) {
521 ptr=&buf[strlen(buf)-strlen(srch_str)];
522 if (!struncmp(ptr,srch_str,strlen(srch_str))) {
523 strcpy(ptr,rplc_str);
527 if (strlen(buf)>384) {
530 fwrite((char *)buf,128,1,fp);
531 strcpy(buf,&buf[128]);
537 if (strlen(buf)>0) fwrite((char *)buf,strlen(buf),1,fp);
540 printf("<R>eplace made %d substitution(s).\n\n",substitutions);
544 int make_message(char *filename, char *recipient, int anon_type, int format_type, int mode)
545 /* temporary file name */
546 /* NULL if it's not mail */
547 /* see MES_ types in header file */
558 if (mode==2) if (strlen(editor_path)==0) {
559 printf("*** No editor available, using built-in editor\n");
564 strcpy(datestr,asctime(localtime(&now)));
565 datestr[strlen(datestr)-1] = 0;
567 if (room_flags & QR_ANONONLY) {
571 printf(" %s from %s",datestr,fullname);
572 if (strlen(recipient)>0) printf(" to %s",recipient);
578 if (mode==1) printf("(Press ctrl-d when finished)\n");
580 fp=fopen(filename,"r");
582 fmout(screenwidth,fp,0,screenheight,0,0);
587 fp=fopen(filename,"w");
595 fp=fopen(filename,"r+");
601 fp=fopen(filename,"w");
603 a=inkey(); if (a==255) a=32;
609 if (a==10) putc(13,stdout);
615 e_ex_code = 1; /* start with a failed exit code */
617 cksum = file_checksum(filename);
619 chmod(filename,0600);
621 execlp(editor_path,editor_path,filename,NULL);
624 if (editor_pid>0) do {
626 b=ka_wait(&e_ex_code);
627 } while((b!=editor_pid)&&(b>=0));
634 if (file_checksum(filename) == cksum) {
635 printf("*** Aborted message.\n");
638 if (e_ex_code==0) goto MEFIN;
641 MECR1: printf("Entry cmd (? for options) -> ");
643 if (b==NEXT_KEY) b='n';
644 if (b==STOP_KEY) b='s';
645 b=(b&127); b=tolower(b);
651 if (b=='a') { printf("Abort\n"); goto MEABT; }
652 if (b=='c') { printf("Continue\n"); goto ME1; }
653 if (b=='s') { printf("Save message\n"); goto MEFIN; }
655 printf("Print formatted\n");
656 printf(" %s from %s",datestr,fullname);
657 if (strlen(recipient)>0) printf(" to %s",recipient);
659 fp=fopen(filename,"r");
661 fmout(screenwidth,fp,
662 ((userflags & US_PAGINATOR) ? 1 : 0),
670 printf("Replace string\n");
671 replace_string(filename,0L);
675 printf("Hold message\n");
682 MEABT: printf("Are you sure? ");
683 if (yesno()==0) goto ME1;
684 MEABT2: unlink(filename);
689 * transmit message text to the server
691 void transmit_message(FILE *fp)
697 while (ch=getc(fp), (ch>=0)) {
699 if (!strcmp(buf,"000")) strcpy(buf,">000");
707 if ((ch==32)&&(strlen(buf)>200)) {
709 if (!strcmp(buf,"000")) strcpy(buf,">000");
713 if (strlen(buf)>250) {
714 if (!strcmp(buf,"000")) strcpy(buf,">000");
726 * entmsg() - edit and create a message
727 * returns 0 if message was saved
729 int entmsg(int is_reply, int c)
730 /* nonzero if this was a <R>eply command */
743 sprintf(cmd,"ENT0 0||0|%d",mode);
747 if ((strncmp(cmd,"570",3)) && (strncmp(cmd,"200",3))) {
748 printf("%s\n",&cmd[4]);
752 if (!strncmp(cmd,"570",3)) need_recp = 1;
754 if ((userflags & US_EXPERT) == 0) formout("entermsg");
760 strcpy(buf,reply_to);
763 printf("Enter recipient: ");
765 if (strlen(buf)==0) return(1);
768 else strcpy(buf,"sysop");
772 if (room_flags&QR_ANONOPT) {
773 printf("Anonymous (Y/N)? ");
777 /* if it's mail, we've got to check the validity of the recipient... */
779 sprintf(cmd,"ENT0 0|%s|%d|%d",buf,b,mode);
783 printf("%s\n",&cmd[4]);
788 /* learn the number of the newest message in in the room, so we can tell
789 * upon saving whether someone else has posted too
792 serv_puts("MSGS LAST|1");
795 printf("%s\n",&cmd[5]);
798 while (serv_gets(cmd), strcmp(cmd,"000")) {
799 msg_arr[num_msgs++] = atol(cmd);
803 /* now put together the message */
804 if ( make_message(temp,buf,b,0,c) != 0 ) return(2);
806 /* and send it to the server */
807 sprintf(cmd,"ENT0 1|%s|%d|%d||",buf,b,mode);
811 printf("%s\n",&cmd[4]);
816 transmit_message(fp);
822 highmsg = msg_arr[num_msgs - 1];
824 serv_puts("MSGS NEW");
827 printf("%s\n",&cmd[5]);
830 while (serv_gets(cmd), strcmp(cmd,"000")) {
831 msg_arr[num_msgs++] = atol(cmd);
835 /* get new highest message number in room to set lrp for goto... */
836 maxmsgnum = msg_arr[num_msgs - 1];
838 /* now see if anyone else has posted in here */
840 for (a=0; a<num_msgs; ++a) if (msg_arr[a]>highmsg) ++b;
842 /* in the Mail> room, this algorithm always counts one message
843 * higher than in public rooms, so we decrement it by one */
847 "*** 1 additional message has been entered in this room by another user.\n");
849 "*** %d additional messages have been entered in this room by other users.\n",b);
854 void process_quote(void) { /* do editing on quoted file */
857 int line,qstart,qend;
859 /* Unlink the second temp file as soon as it's opened, so it'll get
860 * deleted even if the program dies
862 qfile = fopen(temp2,"r");
865 /* Display the quotable text with line numbers added */
867 fgets(buf,128,qfile);
868 while (fgets(buf,128,qfile)!=NULL) {
869 printf("%2d %s",++line,buf);
871 printf("Begin quoting at [ 1] : ");
873 qstart = (buf[0]==0) ? (1) : atoi(buf);
874 printf(" End quoting at [%d] : ",line);
876 qend = (buf[0]==0) ? (line) : atoi(buf);
879 fgets(buf,128,qfile);
880 tfile=fopen(temp,"w");
881 while(fgets(buf,128,qfile)!=NULL) {
882 if ((++line>=qstart)&&(line<=qend)) fprintf(tfile," >%s",buf);
884 fprintf(tfile," \n");
891 void readmsgs(int c, int rdir, int q) /* read contents of a room */
892 /* 0=Read all 1=Read new 2=Read old 3=Read last q */
893 /* 1=Forward (-1)=Reverse */
894 /* Number of msgs to read (if c==3) */
904 char targ[ROOMNAMELEN];
907 signal(SIGINT,SIG_IGN);
908 signal(SIGQUIT,SIG_IGN);
910 if (c<0) b=(MAXMSGS-1);
913 sprintf(prtfile,"/tmp/CPrt%ld",(long)getpid());
918 case 0: strcat(cmd,"ALL");
920 case 1: strcat(cmd,"NEW");
922 case 2: strcat(cmd,"OLD");
924 case 3: sprintf(&cmd[strlen(cmd)], "LAST|%d", q);
930 printf("%s\n",&cmd[5]);
933 while (serv_gets(cmd), strcmp(cmd,"000")) {
934 if (num_msgs == MAXMSGS) {
935 memcpy(&msg_arr[0], &msg_arr[1],
936 (sizeof(long) * (MAXMSGS - 1)) );
939 msg_arr[num_msgs++] = atol(cmd);
945 /* this loop cycles through each message... */
946 start = ( (rdir==1) ? 0 : (num_msgs-1) );
947 for (a=start; ((a<num_msgs)&&(a>=0)); a=a+rdir) {
948 while (msg_arr[a]==0L) {
949 a=a+rdir; if ((a==MAXMSGS)||(a==(-1))) return;
952 RAGAIN: pagin=((arcflag==0)&&(quotflag==0)&&
953 (userflags & US_PAGINATOR)) ? 1 : 0;
955 /* If we're doing a quote, set the screenwidth to 72 temporarily */
957 hold_sw = screenwidth;
961 /* If printing or archiving, set the screenwidth to 80 temporarily */
963 hold_sw = screenwidth;
967 /* now read the message... */
968 e=read_message(msg_arr[a],pagin);
970 /* ...and set the screenwidth back if we have to */
971 if ((quotflag)||(arcflag)) {
972 screenwidth = hold_sw;
974 RMSGREAD: fflush(stdout);
975 highest_msg_read = msg_arr[a];
977 freopen("/dev/tty","r+",stdout);
979 enable_color = hold_color;
983 freopen("/dev/tty","r+",stdout);
985 enable_color = hold_color;
988 freopen(prtfile,"r",stdin);
997 } while((g!=f)&&(g>=0));
998 printf("Message printed.\n");
1001 if ( ((userflags&US_NOPROMPT)||(e==2))
1002 && (((room_flags&QR_MAILBOX)==0)
1003 ||(rc_force_mail_prompts==0)) ) {
1007 printf("(%d) ",num_msgs-a-1);
1008 if (is_mail==1) printf("<R>eply ");
1009 printf("<B>ack <A>gain <Q>uote <N>ext <S>top <?>Help/others -> ");
1012 e=(inkey()&127); e=tolower(e);
1013 /* return key same as <N> */ if (e==13) e='n';
1014 /* space key same as <N> */ if (e==32) e='n';
1015 /* del/move for aides only */ if ((!is_room_aide)
1016 &&((room_flags&QR_MAILBOX)==0)) {
1017 if ((e=='d')||(e=='m')) e=0;
1019 /* print only if available */ if ((e=='p')&&(strlen(printcmd)==0)) e=0;
1020 /* can't move from Mail> */ if ((e=='m')&&(is_mail==1)) e=0;
1021 /* can't reply in public rms */ if ((e=='r')&&(is_mail!=1)) e=0;
1022 /* can't file if not allowed */ if ((e=='f')&&(rc_allow_attachments==0)) e=0;
1023 } while((e!='a')&&(e!='n')&&(e!='s')
1024 &&(e!='d')&&(e!='m')&&(e!='p')
1025 &&(e!='q')&&(e!='b')&&(e!='h')
1026 &&(e!='r')&&(e!='f')&&(e!='?'));
1028 case 's': printf("Stop\r"); break;
1029 case 'a': printf("Again\r"); break;
1030 case 'd': printf("Delete\r"); break;
1031 case 'm': printf("Move\r"); break;
1032 case 'n': printf("Next\r"); break;
1033 case 'p': printf("Print\r"); break;
1034 case 'q': printf("Quote\r"); break;
1035 case 'b': printf("Back\r"); break;
1036 case 'h': printf("Header\r"); break;
1037 case 'r': printf("Reply\r"); break;
1038 case 'f': printf("File\r"); break;
1039 case '?': printf("? <help>\r"); break;
1041 if (userflags & US_DISAPPEAR)
1042 printf("\r%79s\r","");
1048 case '?': printf("Options available here:\n");
1049 printf(" ? Help (prints this message)\n");
1050 printf(" S Stop reading immediately\n");
1051 printf(" A Again (repeats last message)\n");
1052 printf(" N Next (continue with next message)\n");
1053 printf(" B Back (go back to previous message)\n");
1055 ||(room_flags&QR_MAILBOX)) {
1056 printf(" D Delete this message\n");
1057 printf(" M Move message to another room\n");
1059 if (strlen(printcmd)>0)
1060 printf(" P Print this message\n");
1061 printf(" Q Quote portions of this message for your next post\n");
1062 printf(" H Headers (display message headers only)\n");
1064 printf(" R Reply to this message\n");
1065 if (rc_allow_attachments)
1066 printf(" F (save attachments to a file)\n");
1069 case 'p': fflush(stdout);
1070 freopen(prtfile,"w",stdout);
1072 hold_color = enable_color;
1075 case 'q': fflush(stdout);
1076 freopen(temp2,"w",stdout);
1078 hold_color = enable_color;
1082 case 'a': goto RAGAIN;
1083 case 'b': a=a-(rdir*2);
1085 case 'm': newprompt("Enter target room: ",
1086 targ,ROOMNAMELEN-1);
1087 if (strlen(targ)>0) {
1088 sprintf(cmd,"MOVE %ld|%s",
1092 printf("%s\n",&cmd[4]);
1093 if (cmd[0]=='2') msg_arr[a]=0L;
1098 if (cmd[0]!='2') goto RMSGREAD;
1100 case 'f': newprompt("Which section? ", filename,
1101 ((sizeof filename) -1));
1102 snprintf(cmd, sizeof cmd,
1103 "OPNA %ld|%s", msg_arr[a], filename);
1107 extract(filename, &cmd[4], 2);
1108 download_to_local_disk(filename,
1109 extract_int(&cmd[4], 0));
1112 printf("%s\n",&cmd[4]);
1115 case 'd': printf("*** Delete this message? ");
1117 sprintf(cmd,"DELE %ld",msg_arr[a]);
1120 printf("%s\n",&cmd[4]);
1121 if (cmd[0]=='2') msg_arr[a]=0L;
1127 case 'h': read_message(msg_arr[a],READ_HEADER);
1129 case 'r': entmsg(1,(DEFAULT_ENTRY==46 ? 2 : 0));
1132 } /* end for loop */
1133 } /* end read routine */
1139 * View and edit a system message
1141 void edit_system_message(char *which_message)
1147 sprintf(desc, "system message '%s'", which_message);
1148 sprintf(read_cmd, "MESG %s", which_message);
1149 sprintf(write_cmd, "EMSG %s", which_message);
1150 do_edit(desc, read_cmd, "NOOP", write_cmd);