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-
- static char rcsid[] = "@(#)$Id: editmsg.c,v 4.1.1.4 91/01/07 20:36:26 syd Exp $";
-
- /*******************************************************************************
- * The Elm Mail System - $Revision: 4.1.1.4 $ $State: Exp $
- *
- * Copyright (c) 1986, 1987 Dave Taylor
- * Copyright (c) 1988, 1989, 1990 USENET Community Trust
- *******************************************************************************
- * Bug reports, patches, comments, suggestions should be sent to:
- *
- * Syd Weinstein, Elm Coordinator
- * elm@DSI.COM dsinc!elm
- *
- *******************************************************************************
- * $Log: editmsg.c,v $
- * Revision 4.1.1.4 91/01/07 20:36:26 syd
- * Fix warning message on compiling editmsg on voidsig machines
- * From: Chip Salzenberg
- *
- * Revision 4.1.1.3 90/07/12 22:43:08 syd
- * Make it aware of the fact that we loose the cursor position on
- * some system calls, so set it far enough off an absolute move will
- * be done on the next cursor address, and then place it where we want it.
- * From: Syd, reported by Douglas Lamb
- *
- * Revision 4.1.1.2 90/06/21 21:14:09 syd
- * Force Carriage return on return from editor, as column is lost
- * From: Steve Cambell
- *
- * Revision 4.1.1.1 90/06/09 23:33:06 syd
- * Only say cannot invoke on -1 error which is cannot do exec in system call
- * From: Syd
- *
- * Revision 4.1 90/04/28 22:42:47 syd
- * checkin of Elm 2.3 as of Release PL0
- *
- *
- ******************************************************************************/
-
- /** This contains routines to do with starting up and using an editor (or two)
- from within Elm. This stuff used to be in mailmsg2.c...
- **/
-
- #include "headers.h"
- #include <errno.h>
- #ifndef BSD
- /* BSD has already included setjmp.h in headers.h */
- #include <setjmp.h>
- #endif /* BSD */
- #include <signal.h>
- #include <ctype.h>
-
- #ifdef BSD
- #undef tolower
- #endif
-
- #ifndef OS2
- extern int errno;
- #endif
-
- char *error_name(), *error_description(), *strcpy(), *format_long();
- unsigned long sleep();
-
- int
- edit_the_message(filename, already_has_text)
- char *filename;
- int already_has_text;
- {
- /** Invoke the users editor on the filename. Return when done.
- If 'already has text' then we can't use the no-editor option
- and must use 'alternative editor' (e.g. $EDITOR or default_editor)
- instead... **/
-
- char buffer[SLEN];
- register int stat, return_value = 0, old_raw;
-
- buffer[0] = '\0';
-
- if (strcmp(editor, "builtin") == 0 || strcmp(editor, "none") == 0) {
- if (already_has_text)
- sprintf(buffer, "%s %s", alternative_editor, filename);
- else
- return(no_editor_edit_the_message(filename));
- }
-
- PutLine0(LINES, 0, "Invoking editor..."); fflush(stdout);
- if (strlen(buffer) == 0)
- sprintf(buffer,"%s %s", editor, filename);
-
- chown(filename, userid, groupid); /* file was owned by root! */
-
- if (( old_raw = RawState()) == ON)
- Raw(OFF);
-
- if (cursor_control)
- transmit_functions(OFF); /* function keys are local */
-
- if ((stat = system_call(buffer, SH, TRUE, FALSE)) == -1) {
- dprint(1,(debugfile,
- "System call failed with stat %d (edit_the_message)\n",
- stat));
- dprint(1, (debugfile, "** %s - %s **\n", error_name(errno),
- error_description(errno)));
- ClearLine(LINES-1);
- error1("Can't invoke editor '%s' for composition.", editor);
- sleep(2);
- return_value = 1;
- }
-
- if (old_raw == ON)
- Raw(ON);
-
- ClearScreen();
- SetXYLocation(0, 40); /* a location not near the next request, so an absolute is used */
- MoveCursor(LINES, 0); /* dont know where we are, force last row, col 0 */
-
- if (cursor_control)
- transmit_functions(ON); /* function keys are local */
-
- return(return_value);
- }
-
- static char simple_continue[] = "(Continue.)\n\r";
- static char post_ed_continue[] =
- "(Continue entering message. Type ^D or '.' on a line by itself to end.)\n\r";
-
- extern char to[VERY_LONG_STRING], cc[VERY_LONG_STRING],
- expanded_to[VERY_LONG_STRING], expanded_cc[VERY_LONG_STRING],
- bcc[VERY_LONG_STRING], expanded_bcc[VERY_LONG_STRING],
- subject[SLEN];
-
- int interrupts_while_editing; /* keep track 'o dis stuff */
- jmp_buf edit_location; /* for getting back from interrupt */
-
- char *strip_commas();
- long fsize();
-
- int
- no_editor_edit_the_message(filename)
- char *filename;
- {
- /** If the current editor is set to either "builtin" or "none", then
- invoke this program instead. As it turns out, this and the
- routine above have a pretty incestuous relationship (!)...
- **/
-
- FILE *edit_fd;
- char buffer[SLEN], editor_name[SLEN], buf[SLEN];
- int old_raw;
- #ifdef VOIDSIG
- void edit_interrupt();
- void (*oldint)(), (*oldquit)();
- #else
- int edit_interrupt();
- int (*oldint)(), (*oldquit)();
- #endif
-
- if ((edit_fd = fopen(filename, "a")) == NULL) {
- error2("Couldn't open %s for appending [%s].", filename,
- error_name(errno));
- sleep (2);
- dprint(1, (debugfile,
- "Error encountered trying to open file %s;\n", filename));
- dprint(1, (debugfile, "** %s - %s **\n", error_name(errno),
- error_description(errno)));
- return(1);
- }
-
- /** is there already text in this file? **/
-
- if (fsize(edit_fd) > 0L)
- strcpy(buf, "\n\rContinue entering message.");
- else
- strcpy(buf, "\n\rEnter message.");
- strcat(buf, " Type Elm commands on lines by themselves.\n\r");
- sprintf(buf + strlen(buf),
- "Commands include: ^D or '.' to end, %cp to list, %c? for help.\n\r\n\r",
- escape_char, escape_char);
- CleartoEOS();
- Write_to_screen(buf, 0);
-
- oldint = signal(SIGINT, edit_interrupt);
- oldquit = signal(SIGQUIT, edit_interrupt);
-
- interrupts_while_editing = 0;
-
- if (setjmp(edit_location) != 0) {
- if (interrupts_while_editing > 1) {
-
- (void) signal(SIGINT, oldint);
- (void) signal(SIGQUIT, oldquit);
-
- if (edit_fd != NULL) /* insurance... */
- fclose(edit_fd);
- return(1);
- }
- goto more_input; /* read input again, please! */
- }
-
- more_input: buffer[0] = '\0';
-
- while (optionally_enter(buffer, -1,-1, FALSE, FALSE) == 0) {
-
- interrupts_while_editing = 0; /* reset to zero... */
-
- if (strcmp(buffer, ".") == 0)
- break; /* '.' is as good as a ^D to us dumb programs :-) */
- if (buffer[0] == escape_char) {
- switch (tolower(buffer[1])) {
- case '?' : tilde_help();
- goto more_input;
-
- case TILDE_ESCAPE: move_left(buffer, 1);
- goto tilde_input; /*!!*/
-
- case 't' : get_with_expansion("\n\rTo: ",
- to, expanded_to, buffer);
- goto more_input;
- case 'b' : get_with_expansion("\n\rBcc: ",
- bcc, expanded_bcc, buffer);
- goto more_input;
- case 'c' : get_with_expansion("\n\rCc: ",
- cc, expanded_cc, buffer);
- goto more_input;
- case 's' : get_with_expansion("\n\rSubject: ",
- subject,NULL,buffer);
- goto more_input;
-
- case 'h' : get_with_expansion("\n\rTo: ", to, expanded_to, NULL);
- get_with_expansion("Cc: ", cc, expanded_cc, NULL);
- get_with_expansion("Bcc: ", bcc,expanded_bcc, NULL);
- get_with_expansion("Subject: ", subject, NULL, NULL);
- goto more_input;
-
- case 'r' : read_in_file(edit_fd, (char *) buffer + 2, 1);
- goto more_input;
- case 'e' : if (strlen(emacs_editor) > 0)
- if (access(emacs_editor, ACCESS_EXISTS) == 0) {
- strcpy(buffer, editor);
- strcpy(editor, emacs_editor);
- fclose(edit_fd);
- (void) edit_the_message(filename,0);
- strcpy(editor, buffer);
- edit_fd = fopen(filename, "a");
- Write_to_screen(post_ed_continue, 0);
- goto more_input;
- }
- else
- Write_to_screen(
- "\n\r(Can't find Emacs on this system! Continue.)\n\r",
- 0);
- else
- Write_to_screen(
- "\n\r(Don't know where Emacs would be. Continue.)\n\r",
- 0);
- goto more_input;
-
- case 'v' : NewLine();
- strcpy(buffer, editor);
- strcpy(editor, default_editor);
- fclose(edit_fd);
- (void) edit_the_message(filename,0);
- strcpy(editor, buffer);
- edit_fd = fopen(filename, "a");
- Write_to_screen(post_ed_continue, 0);
- goto more_input;
-
- case 'o' : Write_to_screen(
- "\n\rPlease enter the name of the editor: ", 0);
- editor_name[0] = '\0';
- optionally_enter(editor_name,-1,-1, FALSE, FALSE);
- NewLine();
- if (strlen(editor_name) > 0) {
- strcpy(buffer, editor);
- strcpy(editor, editor_name);
- fclose(edit_fd);
- (void) edit_the_message(filename,0);
- strcpy(editor, buffer);
- edit_fd = fopen(filename, "a");
- Write_to_screen(post_ed_continue, 0);
- goto more_input;
- }
- Write_to_screen(simple_continue, 0);
- goto more_input;
-
- case '<' : NewLine();
- if (strlen(buffer) < 3)
- Write_to_screen(
- "(You need to use a specific command here. Continue.)\n\r");
- else {
- sprintf(buf, " > %s%d.%s", temp_dir, getpid(), temp_edit);
- strcat(buffer, buf);
- if (( old_raw = RawState()) == ON)
- Raw(OFF);
- (void) system_call((char *) buffer+2, SH, TRUE, TRUE);
- if (old_raw == ON)
- Raw(ON);
- sprintf(buffer, "~r %s%d.%s", temp_dir, getpid(), temp_edit);
- read_in_file(edit_fd, (char *) buffer + 3, 0);
- (void) unlink((char *) buffer+3);
- SetXYLocation(0, 40); /* a location not near the next request, so an absolute is used */
- MoveCursor(LINES, 0); /* and go to a known location, last row col 0 */
- }
- goto more_input;
-
- case '!' : NewLine();
- if (( old_raw = RawState()) == ON)
- Raw(OFF);
- if (strlen(buffer) < 3)
- (void) system_call(shell, USER_SHELL, TRUE, TRUE);
- else
- (void) system_call((char *) buffer+2, USER_SHELL, TRUE, TRUE);
- if (old_raw == ON)
- Raw(ON);
- SetXYLocation(0, 40); /* a location not near the next request, so an absolute is used */
- MoveCursor(LINES, 0); /* and go to a known location, last row col 0 */
- Write_to_screen(simple_continue, 0);
- goto more_input;
-
- case 'm' : /* same as 'f' but with leading prefix added */
-
- case 'f' : /* this can be directly translated into a
- 'readmsg' call with the same params! */
- NewLine();
- read_in_messages(edit_fd, (char *) buffer + 1);
- goto more_input;
-
- case 'p' : /* print out message so far. Soooo simple! */
- print_message_so_far(edit_fd, filename);
- goto more_input;
-
- default : sprintf(buf,
- "\n\r(Don't know what %c%c is. Try %c? for help.)\n\r",
- escape_char, buffer[1], escape_char);
- Write_to_screen(buf, 0);
- }
- }
- else {
- tilde_input:
- fprintf(edit_fd, "%s\n", buffer);
- NewLine();
- }
- buffer[0] = '\0';
- }
-
-
- Write_to_screen("\n\r<end-of-message>\n\r\n\r\n\r\n\r", 0);
-
- (void) signal(SIGINT, oldint);
- (void) signal(SIGQUIT, oldquit);
-
- if (edit_fd != NULL) /* insurance... */
- fclose(edit_fd);
-
- return(0);
- }
-
- tilde_help()
- {
- /* a simple routine to print out what is available at this level */
-
- char buf[SLEN];
-
- Write_to_screen("\n\rAvailable options at this point are:\n\r\n\r", 0);
- sprintf(buf, "\t%c?\tPrint this help menu.\n\r", escape_char);
- Write_to_screen(buf, 0);
- if (escape_char == TILDE_ESCAPE) /* doesn't make sense otherwise... */
- Write_to_screen(
- "\t~~\tAdd line prefixed by a single '~' character.\n\r", 0);
-
- sprintf(buf,
- "\t%cb\tChange the addresses in the Blind-carbon-copy list.\n\r",
- escape_char);
- Write_to_screen(buf, 0);
-
- sprintf(buf,
- "\t%cc\tChange the addresses in the Carbon-copy list.\n\r",
- escape_char);
- Write_to_screen(buf, 0);
- sprintf(buf,
- "\t%ce\tInvoke the Emacs editor on the message, if possible.\n\r",
- escape_char);
- Write_to_screen(buf, 0);
- sprintf(buf,
- "\t%cf\tAdd the specified message or current.\n\r",
- escape_char);
- Write_to_screen(buf, 0);
- sprintf(buf,
- "\t%ch\tChange all available headers (to, cc, bcc, subject).\n\r",
- escape_char);
- Write_to_screen(buf, 0);
- sprintf(buf,
- "\t%cm\tSame as '%cf', but with the current 'prefix'.\n\r",
- escape_char, escape_char);
- Write_to_screen(buf, 0);
- sprintf(buf,
- "\t%co\tInvoke a user specified editor on the message.\n\r",
- escape_char);
- Write_to_screen(buf, 0);
- sprintf(buf,
- "\t%cp\tPrint out message as typed in so far.\n\r", escape_char);
- Write_to_screen(buf, 0);
- sprintf(buf,
- "\t%cr\tRead in the specified file.\n\r", escape_char);
- Write_to_screen(buf, 0);
- sprintf(buf,
- "\t%cs\tChange the subject of the message.\n\r", escape_char);
- Write_to_screen(buf, 0);
- sprintf(buf,
- "\t%ct\tChange the addresses in the To list.\n\r",
- escape_char);
- Write_to_screen(buf, 0);
- sprintf(buf,
- "\t%cv\tInvoke the Vi visual editor on the message.\n\r",
- escape_char);
- Write_to_screen(buf, 0);
- sprintf(buf,
- "\t%c!\tExecute a unix command (or give a shell if no command).\n\r",
- escape_char);
- Write_to_screen(buf, 0);
- sprintf(buf,
- "\t%c<\tExecute a unix command adding the output to the message.\n\r",
- escape_char);
- Write_to_screen(buf, 0);
- sprintf(buf,
- "\t. \tby itself on a line (or a control-D) ends the message.\n\r");
- Write_to_screen(buf, 0);
- Write_to_screen("(Continue.)\n\r", 0);
- }
-
- read_in_file(fd, filename, show_user_filename)
- FILE *fd;
- char *filename;
- int show_user_filename;
- {
- /** Open the specified file and stream it in to the already opened
- file descriptor given to us. When we're done output the number
- of lines and characters we added, if any... **/
-
- FILE *myfd;
- char myfname[SLEN], buffer[SLEN];
- register int n;
- register int lines = 0, nchars = 0;
-
- for ( n = 0 ; whitespace(filename[n]) ; n++ );
-
- /** expand any shell variables, '~' or other notation... **/
- /* temp copy of filename to buffer since expand_env is destructive */
- strcpy(buffer, &filename[n]);
- expand_env(myfname, buffer);
-
- if (strlen(myfname) == 0) {
- Write_to_screen(
- "\n\r(No filename specified for file read! Continue.)\n\r", 0);
- return;
- }
-
- if ((myfd = fopen(myfname,"r")) == NULL) {
- Write_to_screen("\n\r(Couldn't read file '%s'! Continue.)\n\r", 1,
- myfname);
- return;
- }
-
- while (fgets(buffer, SLEN, myfd) != NULL) {
- n = strlen(buffer);
- if(buffer[n-1] == '\n') lines++;
- nchars += n;
- fputs(buffer, fd);
- fflush(stdout);
- }
-
- fclose(myfd);
-
- if (show_user_filename)
- sprintf(buffer,
- "\n\r(Added %d line%s [%d char%s] from file %s. Continue.)\n\r",
- lines, plural(lines), nchars, plural(nchars), myfname);
- else
- sprintf(buffer,
- "\n\r(Added %d line%s [%d char%s] to message. Continue.)\n\r",
- lines, plural(lines), nchars, plural(nchars));
- Write_to_screen(buffer, 0);
-
- return;
- }
-
- print_message_so_far(edit_fd, filename)
- FILE *edit_fd;
- char *filename;
- {
- /** This prints out the message typed in so far. We accomplish
- this in a cheap manner - close the file, reopen it for reading,
- stream it to the screen, then close the file, and reopen it
- for appending. Simple, but effective!
-
- A nice enhancement would be for this to -> page <- the message
- if it's sufficiently long. Too much work for now, though.
- **/
-
- char buffer[SLEN];
-
- fclose(edit_fd);
-
- if ((edit_fd = fopen(filename, "r")) == NULL) {
- Write_to_screen("\n\rMayday! Mayday! Mayday!\n\r", 0);
- Write_to_screen("\n\rPanic: Can't open file for reading! Bail!\n\r",
- 0);
- emergency_exit();
- }
-
- Write_to_screen("\n\rTo: %s\n\r", 1, format_long(to, 4));
- Write_to_screen("Cc: %s\n\r", 1, format_long(cc, 4));
- Write_to_screen("Bcc: %s\n\r", 1, format_long(bcc, 5));
- Write_to_screen("Subject: %s\n\r\n\r", 1, subject);
-
- while (fgets(buffer, SLEN, edit_fd) != NULL) {
- Write_to_screen(buffer, 0);
- CarriageReturn();
- }
-
- fclose(edit_fd);
-
- if ((edit_fd = fopen(filename, "a")) == NULL) {
- Write_to_screen("Mayday! Mayday! Abandon Ship! Aiiieeeeee\n\r", 0);
- Write_to_screen("\n\rPanic: Can't reopen file for appending!\n\r", 0);
- emergency_exit();
- }
-
- Write_to_screen("\n\r(Continue entering message.)\n\r", 0);
- }
-
- read_in_messages(fd, buffer)
- FILE *fd;
- char *buffer;
- {
- /** Read the specified messages into the open file. If the
- first character of "buffer" is 'm' then prefix it, other-
- wise just stream it in straight...Since we're using the
- pipe to 'readmsg' we can also allow the user to specify
- patterns and such too...
- **/
-
- FILE *myfd, *popen();
- char local_buffer[SLEN], *arg;
- register int add_prefix=0, mindex;
- register int n;
- int lines = 0, nchars = 0;
-
- add_prefix = tolower(buffer[0]) == 'm';
-
- /* strip whitespace to get argument */
- for(arg = &buffer[1]; whitespace(*arg); arg++)
- ;
-
- /* if no argument or begins with a digit, then retrieve the
- * appropriate message from the current folder, else
- * just take the arguments as a pattern for readmsg to match in
- * the current folder.
- */
- if(isdigit(*arg) || *arg == '\0') {
- if(message_count < 1) {
- Write_to_screen("(No messages to read in! Continue.)\n\r", 0);
- return;
- }
- if((mindex = atoi(arg)) == 0) /* no argument - read in current msg */
- mindex = current;
- else if(mindex < 1 || mindex > message_count) {
- sprintf(local_buffer,
- "(Valid messsage numbers are between 1 and %d. Continue.)\n\r",
- message_count);
- Write_to_screen(local_buffer, 0);
- return;
- }
-
- sprintf(local_buffer, "%s -f %s %d", readmsg, cur_folder,
- headers[mindex-1]->index_number);
-
- } else
- sprintf(local_buffer, "%s -f %s %s", readmsg, cur_folder, arg);
-
-
- /* now get output of readmsg */
- if ((myfd = popen(local_buffer, "r")) == NULL) {
- Write_to_screen("(Can't find 'readmsg' command! Continue.)\n\r",
- 0);
- return;
- }
-
- dprint(5, (debugfile, "** readmsg call: \"%s\" **\n", local_buffer));
-
- while (fgets(local_buffer, SLEN, myfd) != NULL) {
- n = strlen(local_buffer);
- nchars += n;
- if (local_buffer[n-1] == '\n') lines++;
- if (add_prefix)
- fprintf(fd, "%s%s", prefixchars, local_buffer);
- else
- fputs(local_buffer, fd);
- }
-
- pclose(myfd);
-
- if (lines == 0)
- sprintf(local_buffer,
- "(Couldn't add the requested message. Continue.)\n\r");
- else
- sprintf(local_buffer,
- "(Added %d line%s [%d char%s] to message. Continue.)\n\r",
- lines, plural(lines), nchars, plural(nchars));
- Write_to_screen(local_buffer, 0);
-
- return;
- }
-
- get_with_expansion(prompt, buffer, expanded_buffer, sourcebuf)
- char *prompt, *buffer, *expanded_buffer, *sourcebuf;
- {
- /** This is used to prompt for a new value of the specified field.
- If expanded_buffer == NULL then we won't bother trying to expand
- this puppy out! (sourcebuf could be an initial addition)
- **/
-
- Write_to_screen(prompt, 0); fflush(stdout); /* output! */
-
- if (sourcebuf != NULL) {
- while (!whitespace(*sourcebuf) && *sourcebuf != '\0')
- sourcebuf++;
- if (*sourcebuf != '\0') {
- while (whitespace(*sourcebuf))
- sourcebuf++;
- if (strlen(sourcebuf) > 0) {
- strcat(buffer, " ");
- strcat(buffer, sourcebuf);
- }
- }
- }
-
- optionally_enter(buffer, -1, -1, TRUE, FALSE); /* already data! */
-
- if(expanded_buffer != NULL) {
- build_address(strip_commas(buffer), expanded_buffer);
- if(*expanded_buffer != '\0') {
- if (*prompt == '\n')
- Write_to_screen("%s%s", 2, prompt, expanded_buffer);
- else
- Write_to_screen("\n\r%s%s", 2, prompt, expanded_buffer);
- }
- }
- NewLine();
-
- return;
- }
-
- #ifdef VOIDSIG
- void
- #else
- int
- #endif
- edit_interrupt()
- {
- /** This routine is called when the user hits an interrupt key
- while in the builtin editor...it increments the number of
- times an interrupt is hit and returns it.
- **/
-
- signal(SIGINT, edit_interrupt);
- signal(SIGQUIT, edit_interrupt);
-
- if (interrupts_while_editing++ == 0)
- Write_to_screen("(Interrupt. One more to cancel this letter.)\n\r",
- 0);
- else
- Write_to_screen("(Interrupt. Letter cancelled.)\n\r", 0);
-
- longjmp(edit_location, 1); /* get back */
- }
-