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 * $FreeBSD$ 34 */ 35 36 #ifndef lint 37 static char sccsid[] = "@(#)edit.c 8.1 (Berkeley) 6/6/93"; 38 #endif /* not lint */ 39 40 #include "rcv.h" 41 #include <fcntl.h> 42 #include "extern.h" 43 44 /* 45 * Mail -- a mail program 46 * 47 * Perform message editing functions. 48 */ 49 50 /* 51 * Edit a message list. 52 */ 53 int 54 editor(msgvec) 55 int *msgvec; 56 { 57 58 return edit1(msgvec, 'e'); 59 } 60 61 /* 62 * Invoke the visual editor on a message list. 63 */ 64 int 65 visual(msgvec) 66 int *msgvec; 67 { 68 69 return edit1(msgvec, 'v'); 70 } 71 72 /* 73 * Edit a message by writing the message into a funnily-named file 74 * (which should not exist) and forking an editor on it. 75 * We get the editor from the stuff above. 76 */ 77 int 78 edit1(msgvec, type) 79 int *msgvec; 80 int type; 81 { 82 register int c; 83 int i; 84 FILE *fp; 85 register struct message *mp; 86 off_t size; 87 88 /* 89 * Deal with each message to be edited . . . 90 */ 91 for (i = 0; msgvec[i] && i < msgCount; i++) { 92 sig_t sigint; 93 94 if (i > 0) { 95 char buf[100]; 96 char *p; 97 98 printf("Edit message %d [ynq]? ", msgvec[i]); 99 if (fgets(buf, sizeof buf, stdin) == 0) 100 break; 101 for (p = buf; *p == ' ' || *p == '\t'; p++) 102 ; 103 if (*p == 'q') 104 break; 105 if (*p == 'n') 106 continue; 107 } 108 dot = mp = &message[msgvec[i] - 1]; 109 touch(mp); 110 sigint = signal(SIGINT, SIG_IGN); 111 fp = run_editor(setinput(mp), mp->m_size, type, readonly); 112 if (fp != NULL) { 113 (void) fseek(otf, 0L, 2); 114 size = ftell(otf); 115 mp->m_block = blockof(size); 116 mp->m_offset = boffsetof(size); 117 mp->m_size = fsize(fp); 118 mp->m_lines = 0; 119 mp->m_flag |= MODIFY; 120 rewind(fp); 121 while ((c = getc(fp)) != EOF) { 122 if (c == '\n') 123 mp->m_lines++; 124 if (putc(c, otf) == EOF) 125 break; 126 } 127 if (ferror(otf)) 128 perror("/tmp"); 129 (void) Fclose(fp); 130 } 131 (void) signal(SIGINT, sigint); 132 } 133 return 0; 134 } 135 136 /* 137 * Run an editor on the file at "fpp" of "size" bytes, 138 * and return a new file pointer. 139 * Signals must be handled by the caller. 140 * "Type" is 'e' for _PATH_EX, 'v' for _PATH_VI. 141 */ 142 FILE * 143 run_editor(fp, size, type, readonly) 144 register FILE *fp; 145 off_t size; 146 int type, readonly; 147 { 148 register FILE *nf = NULL; 149 register int t; 150 time_t modtime; 151 char *edit; 152 struct stat statb; 153 extern char *tempEdit; 154 155 if ((t = creat(tempEdit, readonly ? 0400 : 0600)) < 0) { 156 perror(tempEdit); 157 goto out; 158 } 159 if ((nf = Fdopen(t, "w")) == NULL) { 160 perror(tempEdit); 161 (void) unlink(tempEdit); 162 goto out; 163 } 164 if (size >= 0) 165 while (--size >= 0 && (t = getc(fp)) != EOF) 166 (void) putc(t, nf); 167 else 168 while ((t = getc(fp)) != EOF) 169 (void) putc(t, nf); 170 (void) fflush(nf); 171 if (fstat(fileno(nf), &statb) < 0) 172 modtime = 0; 173 else 174 modtime = statb.st_mtime; 175 if (ferror(nf)) { 176 (void) Fclose(nf); 177 perror(tempEdit); 178 (void) unlink(tempEdit); 179 nf = NULL; 180 goto out; 181 } 182 if (Fclose(nf) < 0) { 183 perror(tempEdit); 184 (void) unlink(tempEdit); 185 nf = NULL; 186 goto out; 187 } 188 nf = NULL; 189 if ((edit = value(type == 'e' ? "EDITOR" : "VISUAL")) == NOSTR) 190 edit = type == 'e' ? _PATH_EX : _PATH_VI; 191 if (run_command(edit, 0, -1, -1, tempEdit, NOSTR, NOSTR) < 0) { 192 (void) unlink(tempEdit); 193 goto out; 194 } 195 /* 196 * If in read only mode or file unchanged, just remove the editor 197 * temporary and return. 198 */ 199 if (readonly) { 200 (void) unlink(tempEdit); 201 goto out; 202 } 203 if (stat(tempEdit, &statb) < 0) { 204 perror(tempEdit); 205 goto out; 206 } 207 if (modtime == statb.st_mtime) { 208 (void) unlink(tempEdit); 209 goto out; 210 } 211 /* 212 * Now switch to new file. 213 */ 214 if ((nf = Fopen(tempEdit, "a+")) == NULL) { 215 perror(tempEdit); 216 (void) unlink(tempEdit); 217 goto out; 218 } 219 (void) unlink(tempEdit); 220 out: 221 return nf; 222 } 223