| 1 | /* #define CORY */ |
| 2 | #include <stdio.h> |
| 3 | #include <sys/types.h> |
| 4 | #include <signal.h> |
| 5 | #include <sys/dir.h> |
| 6 | #include <sys/stat.h> |
| 7 | #include <ctype.h> |
| 8 | |
| 9 | typedef char bool; |
| 10 | |
| 11 | FILE *f; |
| 12 | bool hdrs; |
| 13 | bool qopt; |
| 14 | char *sep; |
| 15 | bool ruptible; |
| 16 | int onintr(); |
| 17 | |
| 18 | main(argc, argv) |
| 19 | int argc; |
| 20 | char *argv[]; |
| 21 | { |
| 22 | char obuf[BUFSIZ]; |
| 23 | bool newrc, already, argfirst = 0; |
| 24 | int rcfirst, lastmsg, firstmsg; |
| 25 | int rcback = 0; /* amount to back off of rcfirst*/ |
| 26 | FILE *bounds, *msgsrc; |
| 27 | int i, nextty; |
| 28 | bool hush = 0; |
| 29 | bool send = 0; |
| 30 | |
| 31 | ruptible = signal(SIGINT, SIG_IGN) == SIG_DFL; |
| 32 | if (ruptible) |
| 33 | signal(SIGINT, SIG_DFL); |
| 34 | setbuf(stdout, obuf); |
| 35 | argc--, argv++; |
| 36 | while (argc >= 1) { |
| 37 | if (isdigit(argv[0][0])) { |
| 38 | argfirst = 1; |
| 39 | rcfirst = atoi(argv[0]); |
| 40 | } else switch (argv[0][1]) { |
| 41 | |
| 42 | case 'f': |
| 43 | hush++; |
| 44 | break; |
| 45 | |
| 46 | case 'q': |
| 47 | qopt++; |
| 48 | break; |
| 49 | |
| 50 | case 'h': |
| 51 | hdrs++; |
| 52 | break; |
| 53 | |
| 54 | case 's': |
| 55 | send++; |
| 56 | break; |
| 57 | |
| 58 | case '0': |
| 59 | case '1': |
| 60 | case '2': |
| 61 | case '3': |
| 62 | case '4': |
| 63 | case '5': |
| 64 | case '6': |
| 65 | case '7': |
| 66 | case '8': |
| 67 | case '9': |
| 68 | rcback = atoi( &( argv[0][1] ) ); |
| 69 | break; |
| 70 | default: |
| 71 | fprintf(stderr, "usage: msgs [ -f ] [ number ]\n"); |
| 72 | exit(1); |
| 73 | } |
| 74 | argc--, argv++; |
| 75 | } |
| 76 | if (!send) { |
| 77 | setuid(getuid()); |
| 78 | if (chdir(getenv("HOME")) < 0) |
| 79 | perror(getenv("HOME")), exit(1); |
| 80 | newrc = 0; |
| 81 | msgsrc = fopen(".msgsrc", "r"); |
| 82 | nextty = 1; |
| 83 | if (msgsrc != NULL) { |
| 84 | fscanf(msgsrc, "%d\n", &i); |
| 85 | fclose(msgsrc); |
| 86 | nextty = i; |
| 87 | if (!argfirst) |
| 88 | rcfirst = i - rcback; |
| 89 | } else |
| 90 | newrc = 1; |
| 91 | msgsrc = fopen(".msgsrc", "w"); |
| 92 | if (msgsrc == NULL) |
| 93 | perror(".msgsrc"), exit(1); |
| 94 | } |
| 95 | if (chdir("/usr/msgs") < 0) |
| 96 | perror("/usr/msgs"), exit(1); |
| 97 | bounds = fopen("bounds", "r"); |
| 98 | if (bounds == NULL) { |
| 99 | FILE *d = fopen(".", "r"); |
| 100 | struct direct dirent; |
| 101 | |
| 102 | if (d == NULL) |
| 103 | perror("/usr/msgs"), exit(1); |
| 104 | firstmsg = 25000; |
| 105 | lastmsg = 0; |
| 106 | while (fread(&dirent, sizeof dirent, 1, d) == 1) { |
| 107 | register char *cp = dirent.d_name; |
| 108 | register int i = 0; |
| 109 | |
| 110 | if (dirent.d_ino == 0) |
| 111 | continue; |
| 112 | while (isdigit(*cp)) |
| 113 | i = i * 10 + *cp++ - '0'; |
| 114 | if (*cp) |
| 115 | continue; |
| 116 | if (i > lastmsg) |
| 117 | lastmsg = i; |
| 118 | if (i < firstmsg) |
| 119 | firstmsg = i; |
| 120 | } |
| 121 | if (firstmsg == 25000) { |
| 122 | firstmsg = 1; |
| 123 | lastmsg = 0; |
| 124 | } |
| 125 | fclose(d); |
| 126 | if (send) { |
| 127 | unlink("bounds"); |
| 128 | bounds = fopen("bounds", "w"); |
| 129 | #ifdef CORY |
| 130 | chmod("bounds", 0644); |
| 131 | #else |
| 132 | chmod("bounds", 0666); |
| 133 | #endif |
| 134 | if (bounds == NULL) |
| 135 | perror("bounds"), exit(1); |
| 136 | fprintf(bounds, "%d %d\n", firstmsg, lastmsg); |
| 137 | fclose(bounds); |
| 138 | } |
| 139 | } else { |
| 140 | fscanf(bounds, "%d %d\n", &firstmsg, &lastmsg); |
| 141 | fclose(bounds); |
| 142 | } |
| 143 | if (send) { |
| 144 | char newname[16]; |
| 145 | FILE *newm; |
| 146 | |
| 147 | sprintf(newname, "%d", lastmsg+1); |
| 148 | bounds = fopen("bounds", "w"); |
| 149 | if (bounds == NULL) |
| 150 | perror("bounds"), exit(1); |
| 151 | fprintf(bounds, "%d %d\n", firstmsg, lastmsg+1); |
| 152 | fclose(bounds); |
| 153 | newm = fopen(newname, "w"); |
| 154 | if (newm == NULL) |
| 155 | fprintf(stderr, "/usr/msgs/"), perror(newname), exit(1); |
| 156 | chmod(newname, 0644); |
| 157 | for (;;) { |
| 158 | register c; |
| 159 | c = getchar(); |
| 160 | if (feof(stdin)) |
| 161 | exit(0); |
| 162 | if (ferror(stdin)) |
| 163 | exit(1); |
| 164 | putc(c, newm); |
| 165 | } |
| 166 | } |
| 167 | if (!newrc) |
| 168 | firstmsg = rcfirst; |
| 169 | already = 0; |
| 170 | for (i = firstmsg; i <= lastmsg; i++) { |
| 171 | register int c; |
| 172 | char inline[BUFSIZ]; |
| 173 | struct stat stbuf; |
| 174 | char fname[16]; |
| 175 | |
| 176 | sprintf(fname, "%d", i); |
| 177 | f = fopen(fname, "r"); |
| 178 | if (f == NULL) |
| 179 | continue; |
| 180 | if (qopt) { |
| 181 | fseek(msgsrc, (long) 0, 0); |
| 182 | fprintf(msgsrc, "%d\n", nextty); |
| 183 | fflush(msgsrc); |
| 184 | printf("There are new messages.\n"); |
| 185 | exit(0); |
| 186 | } |
| 187 | if (already) |
| 188 | printf("\n"); |
| 189 | already = 1; |
| 190 | fseek(msgsrc, (long) 0, 0); |
| 191 | fprintf(msgsrc, "%d\n", nextty); |
| 192 | fflush(msgsrc); |
| 193 | printf("Message %d:\n", i); |
| 194 | fgets(inline, sizeof inline, f); |
| 195 | printf("%s", inline); |
| 196 | if (fgets(inline, sizeof inline, f)) { |
| 197 | if (strcmp(inline, "To: msgs\n") != 0 && inline[0] != '\n') |
| 198 | printf("%s", inline); |
| 199 | if (fgets(inline, sizeof inline, f) && inline[0] != '\n') |
| 200 | printf("%s", inline); |
| 201 | } |
| 202 | c = getc(f); |
| 203 | sep = "-"; |
| 204 | if (c == '\n') |
| 205 | c = getc(f); |
| 206 | if (!feof(f)) |
| 207 | printf("(%d more lines)", linecnt(f)); |
| 208 | if (hdrs) { |
| 209 | printf("\n-----\n"); |
| 210 | fclose(f); |
| 211 | continue; |
| 212 | } |
| 213 | if (feof(f)) |
| 214 | printf("(continue) [yq] "); |
| 215 | else |
| 216 | printf(" type [ynq] ? "); |
| 217 | fflush(stdout); |
| 218 | inline[0] = 0; |
| 219 | fgets(inline, sizeof inline, stdin); |
| 220 | if (inline[0] == 0) |
| 221 | printf("\n"); |
| 222 | if (inline[0] == 'q') |
| 223 | exit(1); |
| 224 | if (isdigit(inline[0])) { |
| 225 | sscanf(inline, "%d", &i); |
| 226 | printf("--Goto %d--\n", i); |
| 227 | i--; |
| 228 | fflush(stdout); |
| 229 | fclose(f); |
| 230 | continue; |
| 231 | } |
| 232 | if (inline[0] == 'n' || inline[0] == 'N') { |
| 233 | printf("--Flushed--\n"); |
| 234 | fflush(stdout); |
| 235 | fclose(f); |
| 236 | if (i >= nextty) |
| 237 | nextty = i + 1; |
| 238 | continue; |
| 239 | } |
| 240 | if (ruptible) |
| 241 | signal(SIGINT, onintr); |
| 242 | if (!feof(f)) |
| 243 | for (;;) { |
| 244 | putchar(c); |
| 245 | c = getc(f); |
| 246 | if (feof(f)) |
| 247 | break; |
| 248 | } |
| 249 | printf("--%s--\n", sep); |
| 250 | if (i >= nextty) |
| 251 | nextty = i + 1; |
| 252 | fflush(stdout); |
| 253 | if (ruptible) |
| 254 | signal(SIGINT, SIG_DFL); |
| 255 | fclose(f); |
| 256 | } |
| 257 | fseek(msgsrc, (long) 0, 0); |
| 258 | fprintf(msgsrc, "%d\n", nextty); |
| 259 | fclose(msgsrc); |
| 260 | if (qopt) |
| 261 | exit(0); |
| 262 | if (!already && !hush) |
| 263 | printf("No messages.\n"); |
| 264 | exit(0); |
| 265 | } |
| 266 | |
| 267 | onintr() |
| 268 | { |
| 269 | |
| 270 | sep = "Skip"; |
| 271 | printf("\n"); |
| 272 | fseek(f, (long) 0, 2); |
| 273 | } |
| 274 | |
| 275 | linecnt(f) |
| 276 | FILE *f; |
| 277 | { |
| 278 | off_t ftell(); |
| 279 | off_t oldpos = ftell(f); |
| 280 | int l = 0; |
| 281 | char lbuf[BUFSIZ]; |
| 282 | |
| 283 | while (fgets(lbuf, sizeof lbuf, f)) |
| 284 | l++; |
| 285 | clearerr(f); |
| 286 | fseek(f, oldpos, 0); |
| 287 | return (l); |
| 288 | } |