1 /* 2 * Copyright (c) 1980 Regents of the University of California. 3 * 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 5.15 (Berkeley) 6/25/90";*/ 36 static char rcsid[] = "$Id: edit.c,v 1.2 1993/08/01 18:13:08 mycroft Exp $"; 37 #endif /* not lint */ 38 39 #include "rcv.h" 40 #include <sys/stat.h> 41 42 /* 43 * Mail -- a mail program 44 * 45 * Perform message editing functions. 46 */ 47 48 /* 49 * Edit a message list. 50 */ 51 52 editor(msgvec) 53 int *msgvec; 54 { 55 56 return edit1(msgvec, 'e'); 57 } 58 59 /* 60 * Invoke the visual editor on a message list. 61 */ 62 63 visual(msgvec) 64 int *msgvec; 65 { 66 67 return edit1(msgvec, 'v'); 68 } 69 70 /* 71 * Edit a message by writing the message into a funnily-named file 72 * (which should not exist) and forking an editor on it. 73 * We get the editor from the stuff above. 74 */ 75 edit1(msgvec, type) 76 int *msgvec; 77 char type; 78 { 79 register int c; 80 int i; 81 FILE *fp; 82 register struct message *mp; 83 off_t size; 84 85 /* 86 * Deal with each message to be edited . . . 87 */ 88 for (i = 0; msgvec[i] && i < msgCount; i++) { 89 sig_t sigint; 90 91 if (i > 0) { 92 char buf[100]; 93 char *p; 94 95 printf("Edit message %d [ynq]? ", msgvec[i]); 96 if (fgets(buf, sizeof buf, stdin) == 0) 97 break; 98 for (p = buf; *p == ' ' || *p == '\t'; p++) 99 ; 100 if (*p == 'q') 101 break; 102 if (*p == 'n') 103 continue; 104 } 105 dot = mp = &message[msgvec[i] - 1]; 106 touch(mp); 107 sigint = signal(SIGINT, SIG_IGN); 108 fp = run_editor(setinput(mp), mp->m_size, type, readonly); 109 if (fp != NULL) { 110 (void) fseek(otf, (long) 0, 2); 111 size = ftell(otf); 112 mp->m_block = blockof(size); 113 mp->m_offset = offsetof(size); 114 mp->m_size = fsize(fp); 115 mp->m_lines = 0; 116 mp->m_flag |= MODIFY; 117 rewind(fp); 118 while ((c = getc(fp)) != EOF) { 119 if (c == '\n') 120 mp->m_lines++; 121 if (putc(c, otf) == EOF) 122 break; 123 } 124 if (ferror(otf)) 125 perror("/tmp"); 126 (void) Fclose(fp); 127 } 128 (void) signal(SIGINT, sigint); 129 } 130 return 0; 131 } 132 133 /* 134 * Run an editor on the file at "fpp" of "size" bytes, 135 * and return a new file pointer. 136 * Signals must be handled by the caller. 137 * "Type" is 'e' for _PATH_EX, 'v' for _PATH_VI. 138 */ 139 FILE * 140 run_editor(fp, size, type, readonly) 141 register FILE *fp; 142 off_t size; 143 char type; 144 { 145 register FILE *nf = NULL; 146 register int t; 147 time_t modtime; 148 char *edit; 149 struct stat statb; 150 extern char tempEdit[]; 151 152 if ((t = creat(tempEdit, readonly ? 0400 : 0600)) < 0) { 153 perror(tempEdit); 154 goto out; 155 } 156 if ((nf = Fdopen(t, "w")) == NULL) { 157 perror(tempEdit); 158 (void) unlink(tempEdit); 159 goto out; 160 } 161 if (size >= 0) 162 while (--size >= 0 && (t = getc(fp)) != EOF) 163 (void) putc(t, nf); 164 else 165 while ((t = getc(fp)) != EOF) 166 (void) putc(t, nf); 167 (void) fflush(nf); 168 if (fstat(fileno(nf), &statb) < 0) 169 modtime = 0; 170 else 171 modtime = statb.st_mtime; 172 if (ferror(nf)) { 173 (void) Fclose(nf); 174 perror(tempEdit); 175 (void) unlink(tempEdit); 176 nf = NULL; 177 goto out; 178 } 179 if (Fclose(nf) < 0) { 180 perror(tempEdit); 181 (void) unlink(tempEdit); 182 nf = NULL; 183 goto out; 184 } 185 nf = NULL; 186 if ((edit = value(type == 'e' ? "EDITOR" : "VISUAL")) == NOSTR) 187 edit = type == 'e' ? _PATH_EX : _PATH_VI; 188 if (run_command(edit, 0, -1, -1, tempEdit, NOSTR) < 0) { 189 (void) unlink(tempEdit); 190 goto out; 191 } 192 /* 193 * If in read only mode or file unchanged, just remove the editor 194 * temporary and return. 195 */ 196 if (readonly) { 197 (void) unlink(tempEdit); 198 goto out; 199 } 200 if (stat(tempEdit, &statb) < 0) { 201 perror(tempEdit); 202 goto out; 203 } 204 if (modtime == statb.st_mtime) { 205 (void) unlink(tempEdit); 206 goto out; 207 } 208 /* 209 * Now switch to new file. 210 */ 211 if ((nf = Fopen(tempEdit, "a+")) == NULL) { 212 perror(tempEdit); 213 (void) unlink(tempEdit); 214 goto out; 215 } 216 (void) unlink(tempEdit); 217 out: 218 return nf; 219 } 220