/* * Copyright (c) 1980, 1993 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * @(#)edit.c 8.1 (Berkeley) 6/6/93 * $FreeBSD: src/usr.bin/mail/edit.c,v 1.2.6.4 2003/01/06 05:46:03 mikeh Exp $ */ #include "rcv.h" #include #include "extern.h" /* * Mail -- a mail program * * Perform message editing functions. */ /* * Edit a message list. */ int editor(int *msgvec) { return (edit1(msgvec, 'e')); } /* * Invoke the visual editor on a message list. */ int visual(int *msgvec) { return (edit1(msgvec, 'v')); } /* * Edit a message by writing the message into a funnily-named file * (which should not exist) and forking an editor on it. * We get the editor from the stuff above. */ int edit1(int *msgvec, int type) { int c, i; FILE *fp; struct message *mp; off_t size; /* * Deal with each message to be edited . . . */ for (i = 0; i < msgCount && msgvec[i]; i++) { sig_t sigint; if (i > 0) { char buf[100]; char *p; printf("Edit message %d [ynq]? ", msgvec[i]); if (fgets(buf, sizeof(buf), stdin) == 0) break; for (p = buf; *p == ' ' || *p == '\t'; p++) ; if (*p == 'q') break; if (*p == 'n') continue; } dot = mp = &message[msgvec[i] - 1]; touch(mp); sigint = signal(SIGINT, SIG_IGN); fp = run_editor(setinput(mp), mp->m_size, type, readonly); if (fp != NULL) { fseeko(otf, (off_t)0, SEEK_END); size = ftello(otf); mp->m_block = blockof(size); mp->m_offset = boffsetof(size); mp->m_size = (long)fsize(fp); mp->m_lines = 0; mp->m_flag |= MODIFY; rewind(fp); while ((c = getc(fp)) != EOF) { if (c == '\n') mp->m_lines++; if (putc(c, otf) == EOF) break; } if (ferror(otf)) warnx("/tmp"); Fclose(fp); } signal(SIGINT, sigint); } return (0); } /* * Run an editor on the file at "fpp" of "size" bytes, * and return a new file pointer. * Signals must be handled by the caller. * "Type" is 'e' for _PATH_EX, 'v' for _PATH_VI. */ FILE * run_editor(FILE *fp, off_t size, int type, int readonly) { FILE *nf = NULL; int t; time_t modtime; char *edit, tempname[PATHSIZE]; struct stat statb; snprintf(tempname, sizeof(tempname), "%s/mail.ReXXXXXXXXXX", tmpdir); if ((t = mkstemp(tempname)) == -1 || (nf = Fdopen(t, "w")) == NULL) { warn("%s", tempname); goto out; } if (readonly && fchmod(t, 0400) == -1) { warn("%s", tempname); rm(tempname); goto out; } if (size >= 0) while (--size >= 0 && (t = getc(fp)) != EOF) putc(t, nf); else while ((t = getc(fp)) != EOF) putc(t, nf); fflush(nf); if (fstat(fileno(nf), &statb) < 0) modtime = 0; else modtime = statb.st_mtime; if (ferror(nf)) { Fclose(nf); warnx("%s", tempname); rm(tempname); nf = NULL; goto out; } if (Fclose(nf) < 0) { warn("%s", tempname); rm(tempname); nf = NULL; goto out; } nf = NULL; if ((edit = value(type == 'e' ? "EDITOR" : "VISUAL")) == NULL) edit = type == 'e' ? _PATH_EX : _PATH_VI; if (run_command(edit, 0, -1, -1, tempname, NULL, NULL) < 0) { rm(tempname); goto out; } /* * If in read only mode or file unchanged, just remove the editor * temporary and return. */ if (readonly) { rm(tempname); goto out; } if (stat(tempname, &statb) < 0) { warn("%s", tempname); goto out; } if (modtime == statb.st_mtime) { rm(tempname); goto out; } /* * Now switch to new file. */ if ((nf = Fopen(tempname, "a+")) == NULL) { warn("%s", tempname); rm(tempname); goto out; } rm(tempname); out: return (nf); }