1 /* 2 * Copyright (c) 1980, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * %sccs.include.redist.c% 6 */ 7 8 #ifndef lint 9 static char sccsid[] = "@(#)edit.c 8.1 (Berkeley) 06/06/93"; 10 #endif /* not lint */ 11 12 #include "rcv.h" 13 #include <fcntl.h> 14 #include "extern.h" 15 16 /* 17 * Mail -- a mail program 18 * 19 * Perform message editing functions. 20 */ 21 22 /* 23 * Edit a message list. 24 */ 25 int 26 editor(msgvec) 27 int *msgvec; 28 { 29 30 return edit1(msgvec, 'e'); 31 } 32 33 /* 34 * Invoke the visual editor on a message list. 35 */ 36 int 37 visual(msgvec) 38 int *msgvec; 39 { 40 41 return edit1(msgvec, 'v'); 42 } 43 44 /* 45 * Edit a message by writing the message into a funnily-named file 46 * (which should not exist) and forking an editor on it. 47 * We get the editor from the stuff above. 48 */ 49 int 50 edit1(msgvec, type) 51 int *msgvec; 52 int type; 53 { 54 register int c; 55 int i; 56 FILE *fp; 57 register struct message *mp; 58 off_t size; 59 60 /* 61 * Deal with each message to be edited . . . 62 */ 63 for (i = 0; msgvec[i] && i < msgCount; i++) { 64 sig_t sigint; 65 66 if (i > 0) { 67 char buf[100]; 68 char *p; 69 70 printf("Edit message %d [ynq]? ", msgvec[i]); 71 if (fgets(buf, sizeof buf, stdin) == 0) 72 break; 73 for (p = buf; *p == ' ' || *p == '\t'; p++) 74 ; 75 if (*p == 'q') 76 break; 77 if (*p == 'n') 78 continue; 79 } 80 dot = mp = &message[msgvec[i] - 1]; 81 touch(mp); 82 sigint = signal(SIGINT, SIG_IGN); 83 fp = run_editor(setinput(mp), mp->m_size, type, readonly); 84 if (fp != NULL) { 85 (void) fseek(otf, 0L, 2); 86 size = ftell(otf); 87 mp->m_block = blockof(size); 88 mp->m_offset = offsetof(size); 89 mp->m_size = fsize(fp); 90 mp->m_lines = 0; 91 mp->m_flag |= MODIFY; 92 rewind(fp); 93 while ((c = getc(fp)) != EOF) { 94 if (c == '\n') 95 mp->m_lines++; 96 if (putc(c, otf) == EOF) 97 break; 98 } 99 if (ferror(otf)) 100 perror("/tmp"); 101 (void) Fclose(fp); 102 } 103 (void) signal(SIGINT, sigint); 104 } 105 return 0; 106 } 107 108 /* 109 * Run an editor on the file at "fpp" of "size" bytes, 110 * and return a new file pointer. 111 * Signals must be handled by the caller. 112 * "Type" is 'e' for _PATH_EX, 'v' for _PATH_VI. 113 */ 114 FILE * 115 run_editor(fp, size, type, readonly) 116 register FILE *fp; 117 off_t size; 118 int type, readonly; 119 { 120 register FILE *nf = NULL; 121 register int t; 122 time_t modtime; 123 char *edit; 124 struct stat statb; 125 extern char tempEdit[]; 126 127 if ((t = creat(tempEdit, readonly ? 0400 : 0600)) < 0) { 128 perror(tempEdit); 129 goto out; 130 } 131 if ((nf = Fdopen(t, "w")) == NULL) { 132 perror(tempEdit); 133 (void) unlink(tempEdit); 134 goto out; 135 } 136 if (size >= 0) 137 while (--size >= 0 && (t = getc(fp)) != EOF) 138 (void) putc(t, nf); 139 else 140 while ((t = getc(fp)) != EOF) 141 (void) putc(t, nf); 142 (void) fflush(nf); 143 if (fstat(fileno(nf), &statb) < 0) 144 modtime = 0; 145 else 146 modtime = statb.st_mtime; 147 if (ferror(nf)) { 148 (void) Fclose(nf); 149 perror(tempEdit); 150 (void) unlink(tempEdit); 151 nf = NULL; 152 goto out; 153 } 154 if (Fclose(nf) < 0) { 155 perror(tempEdit); 156 (void) unlink(tempEdit); 157 nf = NULL; 158 goto out; 159 } 160 nf = NULL; 161 if ((edit = value(type == 'e' ? "EDITOR" : "VISUAL")) == NOSTR) 162 edit = type == 'e' ? _PATH_EX : _PATH_VI; 163 if (run_command(edit, 0, -1, -1, tempEdit, NOSTR, NOSTR) < 0) { 164 (void) unlink(tempEdit); 165 goto out; 166 } 167 /* 168 * If in read only mode or file unchanged, just remove the editor 169 * temporary and return. 170 */ 171 if (readonly) { 172 (void) unlink(tempEdit); 173 goto out; 174 } 175 if (stat(tempEdit, &statb) < 0) { 176 perror(tempEdit); 177 goto out; 178 } 179 if (modtime == statb.st_mtime) { 180 (void) unlink(tempEdit); 181 goto out; 182 } 183 /* 184 * Now switch to new file. 185 */ 186 if ((nf = Fopen(tempEdit, "a+")) == NULL) { 187 perror(tempEdit); 188 (void) unlink(tempEdit); 189 goto out; 190 } 191 (void) unlink(tempEdit); 192 out: 193 return nf; 194 } 195