1 /* 2 * Copyright (c) 1980, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #ifndef lint 35 static char sccsid[] = "from: @(#)edit.c 8.1 (Berkeley) 6/6/93"; 36 static char rcsid[] = "$Id: edit.c,v 1.4 1994/11/28 20:03:32 jtc Exp $"; 37 #endif /* not lint */ 38 39 #include "rcv.h" 40 #include <fcntl.h> 41 #include "extern.h" 42 43 /* 44 * Mail -- a mail program 45 * 46 * Perform message editing functions. 47 */ 48 49 /* 50 * Edit a message list. 51 */ 52 int 53 editor(msgvec) 54 int *msgvec; 55 { 56 57 return edit1(msgvec, 'e'); 58 } 59 60 /* 61 * Invoke the visual editor on a message list. 62 */ 63 int 64 visual(msgvec) 65 int *msgvec; 66 { 67 68 return edit1(msgvec, 'v'); 69 } 70 71 /* 72 * Edit a message by writing the message into a funnily-named file 73 * (which should not exist) and forking an editor on it. 74 * We get the editor from the stuff above. 75 */ 76 int 77 edit1(msgvec, type) 78 int *msgvec; 79 int type; 80 { 81 register int c; 82 int i; 83 FILE *fp; 84 register struct message *mp; 85 off_t size; 86 87 /* 88 * Deal with each message to be edited . . . 89 */ 90 for (i = 0; msgvec[i] && i < msgCount; i++) { 91 sig_t sigint; 92 93 if (i > 0) { 94 char buf[100]; 95 char *p; 96 97 printf("Edit message %d [ynq]? ", msgvec[i]); 98 if (fgets(buf, sizeof buf, stdin) == 0) 99 break; 100 for (p = buf; *p == ' ' || *p == '\t'; p++) 101 ; 102 if (*p == 'q') 103 break; 104 if (*p == 'n') 105 continue; 106 } 107 dot = mp = &message[msgvec[i] - 1]; 108 touch(mp); 109 sigint = signal(SIGINT, SIG_IGN); 110 fp = run_editor(setinput(mp), mp->m_size, type, readonly); 111 if (fp != NULL) { 112 (void) fseek(otf, 0L, 2); 113 size = ftell(otf); 114 mp->m_block = blockof(size); 115 mp->m_offset = offsetof(size); 116 mp->m_size = fsize(fp); 117 mp->m_lines = 0; 118 mp->m_flag |= MODIFY; 119 rewind(fp); 120 while ((c = getc(fp)) != EOF) { 121 if (c == '\n') 122 mp->m_lines++; 123 if (putc(c, otf) == EOF) 124 break; 125 } 126 if (ferror(otf)) 127 perror("/tmp"); 128 (void) Fclose(fp); 129 } 130 (void) signal(SIGINT, sigint); 131 } 132 return 0; 133 } 134 135 /* 136 * Run an editor on the file at "fpp" of "size" bytes, 137 * and return a new file pointer. 138 * Signals must be handled by the caller. 139 * "Type" is 'e' for _PATH_EX, 'v' for _PATH_VI. 140 */ 141 FILE * 142 run_editor(fp, size, type, readonly) 143 register FILE *fp; 144 off_t size; 145 int type, readonly; 146 { 147 register FILE *nf = NULL; 148 register int t; 149 time_t modtime; 150 char *edit; 151 struct stat statb; 152 extern char *tempEdit; 153 154 if ((t = creat(tempEdit, readonly ? 0400 : 0600)) < 0) { 155 perror(tempEdit); 156 goto out; 157 } 158 if ((nf = Fdopen(t, "w")) == NULL) { 159 perror(tempEdit); 160 (void) unlink(tempEdit); 161 goto out; 162 } 163 if (size >= 0) 164 while (--size >= 0 && (t = getc(fp)) != EOF) 165 (void) putc(t, nf); 166 else 167 while ((t = getc(fp)) != EOF) 168 (void) putc(t, nf); 169 (void) fflush(nf); 170 if (fstat(fileno(nf), &statb) < 0) 171 modtime = 0; 172 else 173 modtime = statb.st_mtime; 174 if (ferror(nf)) { 175 (void) Fclose(nf); 176 perror(tempEdit); 177 (void) unlink(tempEdit); 178 nf = NULL; 179 goto out; 180 } 181 if (Fclose(nf) < 0) { 182 perror(tempEdit); 183 (void) unlink(tempEdit); 184 nf = NULL; 185 goto out; 186 } 187 nf = NULL; 188 if ((edit = value(type == 'e' ? "EDITOR" : "VISUAL")) == NOSTR) 189 edit = type == 'e' ? _PATH_EX : _PATH_VI; 190 if (run_command(edit, 0, -1, -1, tempEdit, NOSTR, NOSTR) < 0) { 191 (void) unlink(tempEdit); 192 goto out; 193 } 194 /* 195 * If in read only mode or file unchanged, just remove the editor 196 * temporary and return. 197 */ 198 if (readonly) { 199 (void) unlink(tempEdit); 200 goto out; 201 } 202 if (stat(tempEdit, &statb) < 0) { 203 perror(tempEdit); 204 goto out; 205 } 206 if (modtime == statb.st_mtime) { 207 (void) unlink(tempEdit); 208 goto out; 209 } 210 /* 211 * Now switch to new file. 212 */ 213 if ((nf = Fopen(tempEdit, "a+")) == NULL) { 214 perror(tempEdit); 215 (void) unlink(tempEdit); 216 goto out; 217 } 218 (void) unlink(tempEdit); 219 out: 220 return nf; 221 } 222