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 #if 0 36 static char sccsid[] = "@(#)edit.c 8.1 (Berkeley) 6/6/93"; 37 #endif 38 #endif /* not lint */ 39 #include <sys/cdefs.h> 40 __FBSDID("$FreeBSD$"); 41 42 #include "rcv.h" 43 #include <fcntl.h> 44 #include "extern.h" 45 46 /* 47 * Mail -- a mail program 48 * 49 * Perform message editing functions. 50 */ 51 52 /* 53 * Edit a message list. 54 */ 55 int 56 editor(msgvec) 57 int *msgvec; 58 { 59 60 return (edit1(msgvec, 'e')); 61 } 62 63 /* 64 * Invoke the visual editor on a message list. 65 */ 66 int 67 visual(msgvec) 68 int *msgvec; 69 { 70 71 return (edit1(msgvec, 'v')); 72 } 73 74 /* 75 * Edit a message by writing the message into a funnily-named file 76 * (which should not exist) and forking an editor on it. 77 * We get the editor from the stuff above. 78 */ 79 int 80 edit1(msgvec, type) 81 int *msgvec; 82 int type; 83 { 84 int c, i; 85 FILE *fp; 86 struct message *mp; 87 off_t size; 88 89 /* 90 * Deal with each message to be edited . . . 91 */ 92 for (i = 0; msgvec[i] && i < msgCount; i++) { 93 sig_t sigint; 94 95 if (i > 0) { 96 char buf[100]; 97 char *p; 98 99 printf("Edit message %d [ynq]? ", msgvec[i]); 100 if (fgets(buf, sizeof(buf), stdin) == 0) 101 break; 102 for (p = buf; *p == ' ' || *p == '\t'; p++) 103 ; 104 if (*p == 'q') 105 break; 106 if (*p == 'n') 107 continue; 108 } 109 dot = mp = &message[msgvec[i] - 1]; 110 touch(mp); 111 sigint = signal(SIGINT, SIG_IGN); 112 fp = run_editor(setinput(mp), mp->m_size, type, readonly); 113 if (fp != NULL) { 114 (void)fseeko(otf, (off_t)0, SEEK_END); 115 size = ftello(otf); 116 mp->m_block = blockof(size); 117 mp->m_offset = boffsetof(size); 118 mp->m_size = (long)fsize(fp); 119 mp->m_lines = 0; 120 mp->m_flag |= MODIFY; 121 rewind(fp); 122 while ((c = getc(fp)) != EOF) { 123 if (c == '\n') 124 mp->m_lines++; 125 if (putc(c, otf) == EOF) 126 break; 127 } 128 if (ferror(otf)) 129 warnx("/tmp"); 130 (void)Fclose(fp); 131 } 132 (void)signal(SIGINT, sigint); 133 } 134 return (0); 135 } 136 137 /* 138 * Run an editor on the file at "fpp" of "size" bytes, 139 * and return a new file pointer. 140 * Signals must be handled by the caller. 141 * "Type" is 'e' for _PATH_EX, 'v' for _PATH_VI. 142 */ 143 FILE * 144 run_editor(fp, size, type, readonly) 145 FILE *fp; 146 off_t size; 147 int type, readonly; 148 { 149 FILE *nf = NULL; 150 int t; 151 time_t modtime; 152 char *edit, tempname[PATHSIZE]; 153 struct stat statb; 154 155 (void)snprintf(tempname, sizeof(tempname), 156 "%s/mail.ReXXXXXXXXXX", tmpdir); 157 if ((t = mkstemp(tempname)) == -1 || 158 (nf = Fdopen(t, "w")) == NULL) { 159 warn("%s", tempname); 160 goto out; 161 } 162 if (readonly && fchmod(t, 0400) == -1) { 163 warn("%s", tempname); 164 (void)rm(tempname); 165 goto out; 166 } 167 if (size >= 0) 168 while (--size >= 0 && (t = getc(fp)) != EOF) 169 (void)putc(t, nf); 170 else 171 while ((t = getc(fp)) != EOF) 172 (void)putc(t, nf); 173 (void)fflush(nf); 174 if (fstat(fileno(nf), &statb) < 0) 175 modtime = 0; 176 else 177 modtime = statb.st_mtime; 178 if (ferror(nf)) { 179 (void)Fclose(nf); 180 warnx("%s", tempname); 181 (void)rm(tempname); 182 nf = NULL; 183 goto out; 184 } 185 if (Fclose(nf) < 0) { 186 warn("%s", tempname); 187 (void)rm(tempname); 188 nf = NULL; 189 goto out; 190 } 191 nf = NULL; 192 if ((edit = value(type == 'e' ? "EDITOR" : "VISUAL")) == NULL) 193 edit = type == 'e' ? _PATH_EX : _PATH_VI; 194 if (run_command(edit, 0, -1, -1, tempname, NULL, NULL) < 0) { 195 (void)rm(tempname); 196 goto out; 197 } 198 /* 199 * If in read only mode or file unchanged, just remove the editor 200 * temporary and return. 201 */ 202 if (readonly) { 203 (void)rm(tempname); 204 goto out; 205 } 206 if (stat(tempname, &statb) < 0) { 207 warn("%s", tempname); 208 goto out; 209 } 210 if (modtime == statb.st_mtime) { 211 (void)rm(tempname); 212 goto out; 213 } 214 /* 215 * Now switch to new file. 216 */ 217 if ((nf = Fopen(tempname, "a+")) == NULL) { 218 warn("%s", tempname); 219 (void)rm(tempname); 220 goto out; 221 } 222 (void)rm(tempname); 223 out: 224 return (nf); 225 } 226