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