| 1 | # |
| 2 | |
| 3 | #include "rcv.h" |
| 4 | #include <sys/stat.h> |
| 5 | |
| 6 | /* |
| 7 | * Rcv -- receive mail rationally. |
| 8 | * |
| 9 | * Termination processing. |
| 10 | */ |
| 11 | |
| 12 | static char *SccsId = "@(#)quit.c 2.3 %G%"; |
| 13 | |
| 14 | /* |
| 15 | * Save all of the undetermined messages at the top of "mbox" |
| 16 | * Save all untouched messages back in the system mailbox. |
| 17 | * Remove the system mailbox, if none saved there. |
| 18 | */ |
| 19 | |
| 20 | quit() |
| 21 | { |
| 22 | int mcount, p, modify, autohold, anystat, holdbit, nohold; |
| 23 | FILE *ibuf, *obuf, *fbuf, *rbuf, *readstat; |
| 24 | register struct message *mp; |
| 25 | register int c; |
| 26 | extern char tempQuit[], tempResid[]; |
| 27 | struct stat minfo; |
| 28 | char *id; |
| 29 | |
| 30 | /* |
| 31 | * If we are read only, we can't do anything, |
| 32 | * so just return quickly. |
| 33 | */ |
| 34 | |
| 35 | if (readonly) |
| 36 | return; |
| 37 | /* |
| 38 | * See if there any messages to save in mbox. If no, we |
| 39 | * can save copying mbox to /tmp and back. |
| 40 | * |
| 41 | * Check also to see if any files need to be preserved. |
| 42 | * Delete all untouched messages to keep them out of mbox. |
| 43 | * If all the messages are to be preserved, just exit with |
| 44 | * a message. |
| 45 | * |
| 46 | * If the luser has sent mail to himself, refuse to do |
| 47 | * anything with the mailbox, unless mail locking works. |
| 48 | */ |
| 49 | |
| 50 | lock(mailname); |
| 51 | #ifndef CANLOCK |
| 52 | if (selfsent) { |
| 53 | printf("You have new mail.\n"); |
| 54 | unlock(); |
| 55 | return; |
| 56 | } |
| 57 | #endif |
| 58 | rbuf = NULL; |
| 59 | if (stat(mailname, &minfo) >= 0 && minfo.st_size > mailsize) { |
| 60 | printf("New mail has arrived.\n"); |
| 61 | rbuf = fopen(tempResid, "w"); |
| 62 | fbuf = fopen(mailname, "r"); |
| 63 | if (rbuf == NULL || fbuf == NULL) |
| 64 | goto newmail; |
| 65 | #ifdef APPEND |
| 66 | fseek(fbuf, mailsize, 0); |
| 67 | while ((c = getc(fbuf)) != EOF) |
| 68 | putc(c, rbuf); |
| 69 | #else |
| 70 | p = minfo.st_size - mailsize; |
| 71 | while (p-- > 0) { |
| 72 | c = getc(fbuf); |
| 73 | if (c == EOF) |
| 74 | goto newmail; |
| 75 | putc(c, rbuf); |
| 76 | } |
| 77 | #endif |
| 78 | fclose(fbuf); |
| 79 | fclose(rbuf); |
| 80 | if ((rbuf = fopen(tempResid, "r")) == NULL) |
| 81 | goto newmail; |
| 82 | remove(tempResid); |
| 83 | } |
| 84 | |
| 85 | /* |
| 86 | * Adjust the message flags in each message. |
| 87 | */ |
| 88 | |
| 89 | anystat = 0; |
| 90 | autohold = value("hold") != NOSTR; |
| 91 | holdbit = autohold ? MPRESERVE : MBOX; |
| 92 | nohold = MBOX|MSAVED|MDELETED|MPRESERVE; |
| 93 | if (value("keepsave") != NOSTR) |
| 94 | nohold &= ~MSAVED; |
| 95 | for (mp = &message[0]; mp < &message[msgCount]; mp++) { |
| 96 | if (mp->m_flag & MNEW) { |
| 97 | mp->m_flag &= ~MNEW; |
| 98 | mp->m_flag |= MSTATUS; |
| 99 | } |
| 100 | if (mp->m_flag & MSTATUS) |
| 101 | anystat++; |
| 102 | if ((mp->m_flag & MTOUCH) == 0) |
| 103 | mp->m_flag |= MPRESERVE; |
| 104 | if ((mp->m_flag & nohold) == 0) |
| 105 | mp->m_flag |= holdbit; |
| 106 | } |
| 107 | modify = 0; |
| 108 | if (Tflag != NOSTR) { |
| 109 | if ((readstat = fopen(Tflag, "w")) == NULL) |
| 110 | Tflag = NOSTR; |
| 111 | } |
| 112 | for (c = 0, p = 0, mp = &message[0]; mp < &message[msgCount]; mp++) { |
| 113 | if (mp->m_flag & MBOX) |
| 114 | c++; |
| 115 | if (mp->m_flag & MPRESERVE) |
| 116 | p++; |
| 117 | if (mp->m_flag & MODIFY) |
| 118 | modify++; |
| 119 | if (Tflag != NOSTR && (mp->m_flag & (MREAD|MDELETED)) != 0) { |
| 120 | id = hfield("article-id", mp); |
| 121 | if (id != NOSTR) |
| 122 | fprintf(readstat, "%s\n", id); |
| 123 | } |
| 124 | } |
| 125 | if (Tflag != NOSTR) |
| 126 | fclose(readstat); |
| 127 | if (p == msgCount && !modify && !anystat) { |
| 128 | if (p == 1) |
| 129 | printf("Held 1 message in %s\n", mailname); |
| 130 | else |
| 131 | printf("Held %2d messages in %s\n", p, mailname); |
| 132 | unlock(); |
| 133 | return; |
| 134 | } |
| 135 | if (c == 0) { |
| 136 | if (p != 0) { |
| 137 | writeback(rbuf); |
| 138 | unlock(); |
| 139 | return; |
| 140 | } |
| 141 | goto cream; |
| 142 | } |
| 143 | |
| 144 | /* |
| 145 | * Create another temporary file and copy user's mbox file |
| 146 | * darin. If there is no mbox, copy nothing. |
| 147 | * If he has specified "append" don't copy his mailbox, |
| 148 | * just copy saveable entries at the end. |
| 149 | */ |
| 150 | |
| 151 | mcount = c; |
| 152 | if (value("append") == NOSTR) { |
| 153 | if ((obuf = fopen(tempQuit, "w")) == NULL) { |
| 154 | perror(tempQuit); |
| 155 | unlock(); |
| 156 | return; |
| 157 | } |
| 158 | if ((ibuf = fopen(tempQuit, "r")) == NULL) { |
| 159 | perror(tempQuit); |
| 160 | remove(tempQuit); |
| 161 | fclose(obuf); |
| 162 | unlock(); |
| 163 | return; |
| 164 | } |
| 165 | remove(tempQuit); |
| 166 | if ((fbuf = fopen(mbox, "r")) != NULL) { |
| 167 | while ((c = getc(fbuf)) != EOF) |
| 168 | putc(c, obuf); |
| 169 | fclose(fbuf); |
| 170 | } |
| 171 | if (ferror(obuf)) { |
| 172 | perror(tempQuit); |
| 173 | fclose(ibuf); |
| 174 | fclose(obuf); |
| 175 | unlock(); |
| 176 | return; |
| 177 | } |
| 178 | fclose(obuf); |
| 179 | close(creat(mbox, 0600)); |
| 180 | if ((obuf = fopen(mbox, "w")) == NULL) { |
| 181 | perror(mbox); |
| 182 | fclose(ibuf); |
| 183 | unlock(); |
| 184 | return; |
| 185 | } |
| 186 | } |
| 187 | if (value("append") != NOSTR) |
| 188 | if ((obuf = fopen(mbox, "a")) == NULL) { |
| 189 | perror(mbox); |
| 190 | unlock(); |
| 191 | return; |
| 192 | } |
| 193 | for (mp = &message[0]; mp < &message[msgCount]; mp++) |
| 194 | if (mp->m_flag & MBOX) |
| 195 | if (send(mp, obuf) < 0) { |
| 196 | perror(mbox); |
| 197 | fclose(ibuf); |
| 198 | fclose(obuf); |
| 199 | unlock(); |
| 200 | return; |
| 201 | } |
| 202 | |
| 203 | /* |
| 204 | * Copy the user's old mbox contents back |
| 205 | * to the end of the stuff we just saved. |
| 206 | * If we are appending, this is unnecessary. |
| 207 | */ |
| 208 | |
| 209 | if (value("append") == NOSTR) { |
| 210 | rewind(ibuf); |
| 211 | c = getc(ibuf); |
| 212 | while (c != EOF) { |
| 213 | putc(c, obuf); |
| 214 | if (ferror(obuf)) |
| 215 | break; |
| 216 | c = getc(ibuf); |
| 217 | } |
| 218 | fclose(ibuf); |
| 219 | fflush(obuf); |
| 220 | } |
| 221 | if (ferror(obuf)) { |
| 222 | perror(mbox); |
| 223 | fclose(obuf); |
| 224 | unlock(); |
| 225 | return; |
| 226 | } |
| 227 | fclose(obuf); |
| 228 | if (mcount == 1) |
| 229 | printf("Saved 1 message in mbox\n"); |
| 230 | else |
| 231 | printf("Saved %d messages in mbox\n", mcount); |
| 232 | |
| 233 | /* |
| 234 | * Now we are ready to copy back preserved files to |
| 235 | * the system mailbox, if any were requested. |
| 236 | */ |
| 237 | |
| 238 | if (p != 0) { |
| 239 | writeback(rbuf); |
| 240 | unlock(); |
| 241 | return; |
| 242 | } |
| 243 | |
| 244 | /* |
| 245 | * Finally, remove his /usr/mail file. |
| 246 | * If new mail has arrived, copy it back. |
| 247 | */ |
| 248 | |
| 249 | cream: |
| 250 | if (rbuf != NULL) { |
| 251 | fbuf = fopen(mailname, "w"); |
| 252 | if (fbuf == NULL) |
| 253 | goto newmail; |
| 254 | while ((c = getc(rbuf)) != EOF) |
| 255 | putc(c, fbuf); |
| 256 | fclose(rbuf); |
| 257 | fclose(fbuf); |
| 258 | alter(mailname); |
| 259 | unlock(); |
| 260 | return; |
| 261 | } |
| 262 | demail(); |
| 263 | unlock(); |
| 264 | return; |
| 265 | |
| 266 | newmail: |
| 267 | printf("Thou hast new mail.\n"); |
| 268 | unlock(); |
| 269 | } |
| 270 | |
| 271 | /* |
| 272 | * Preserve all the appropriate messages back in the system |
| 273 | * mailbox, and print a nice message indicated how many were |
| 274 | * saved. On any error, just return -1. Else return 0. |
| 275 | * Incorporate the any new mail that we found. |
| 276 | */ |
| 277 | |
| 278 | writeback(res) |
| 279 | register FILE *res; |
| 280 | { |
| 281 | register struct message *mp; |
| 282 | register int p, c; |
| 283 | FILE *obuf; |
| 284 | |
| 285 | p = 0; |
| 286 | if ((obuf = fopen(mailname, "w")) == NULL) { |
| 287 | perror(mailname); |
| 288 | return(-1); |
| 289 | } |
| 290 | #ifndef APPEND |
| 291 | if (res != NULL) |
| 292 | while ((c = getc(res)) != EOF) |
| 293 | putc(c, obuf); |
| 294 | #endif |
| 295 | for (mp = &message[0]; mp < &message[msgCount]; mp++) |
| 296 | if ((mp->m_flag&MPRESERVE)||(mp->m_flag&MTOUCH)==0) { |
| 297 | p++; |
| 298 | if (send(mp, obuf) < 0) { |
| 299 | perror(mailname); |
| 300 | fclose(obuf); |
| 301 | return(-1); |
| 302 | } |
| 303 | } |
| 304 | #ifdef APPEND |
| 305 | if (res != NULL) |
| 306 | while ((c = getc(res)) != EOF) |
| 307 | putc(c, obuf); |
| 308 | #endif |
| 309 | fflush(obuf); |
| 310 | if (ferror(obuf)) { |
| 311 | perror(mailname); |
| 312 | fclose(obuf); |
| 313 | return(-1); |
| 314 | } |
| 315 | if (res != NULL) |
| 316 | fclose(res); |
| 317 | fclose(obuf); |
| 318 | alter(mailname); |
| 319 | if (p == 1) |
| 320 | printf("Held 1 message in %s\n", mailname); |
| 321 | else |
| 322 | printf("Held %d messages in %s\n", p, mailname); |
| 323 | return(0); |
| 324 | } |