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