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69739ccc BJ |
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 | FILE *bounds, *msgsrc; | |
26 | int i, nextty; | |
27 | bool hush = 0; | |
28 | bool send = 0; | |
29 | ||
30 | ruptible = signal(SIGINT, SIG_IGN) == SIG_DFL; | |
31 | if (ruptible) | |
32 | signal(SIGINT, SIG_DFL); | |
33 | setbuf(stdout, obuf); | |
34 | argc--, argv++; | |
35 | while (argc >= 1) { | |
36 | if (isdigit(argv[0][0])) { | |
37 | argfirst = 1; | |
38 | rcfirst = atoi(argv[0]); | |
39 | } else switch (argv[0][1]) { | |
40 | ||
41 | case 'f': | |
42 | hush++; | |
43 | break; | |
44 | ||
45 | case 'q': | |
46 | qopt++; | |
47 | break; | |
48 | ||
49 | case 'h': | |
50 | hdrs++; | |
51 | break; | |
52 | ||
53 | case 's': | |
54 | send++; | |
55 | break; | |
56 | ||
57 | default: | |
58 | fprintf(stderr, "usage: msgs [ -f ] [ number ]\n"); | |
59 | exit(1); | |
60 | } | |
61 | argc--, argv++; | |
62 | } | |
63 | if (!send) { | |
64 | setuid(getuid()); | |
65 | if (chdir(getenv("HOME")) < 0) | |
66 | perror(getenv("HOME")), exit(1); | |
67 | newrc = 0; | |
68 | msgsrc = fopen(".msgsrc", "r"); | |
69 | nextty = 1; | |
70 | if (msgsrc != NULL) { | |
71 | fscanf(msgsrc, "%d\n", &i); | |
72 | fclose(msgsrc); | |
73 | nextty = i; | |
74 | if (!argfirst) | |
75 | rcfirst = i; | |
76 | } else | |
77 | newrc = 1; | |
78 | msgsrc = fopen(".msgsrc", "w"); | |
79 | if (msgsrc == NULL) | |
80 | perror(".msgsrc"), exit(1); | |
81 | } | |
82 | if (chdir("/usr/msgs") < 0) | |
83 | perror("/usr/msgs"), exit(1); | |
84 | bounds = fopen("bounds", "r"); | |
85 | if (bounds == NULL) { | |
86 | FILE *d = fopen(".", "r"); | |
87 | struct direct dirent; | |
88 | ||
89 | if (d == NULL) | |
90 | perror("/usr/msgs"), exit(1); | |
91 | firstmsg = 25000; | |
92 | lastmsg = 0; | |
93 | while (fread(&dirent, sizeof dirent, 1, d) == 1) { | |
94 | register char *cp = dirent.d_name; | |
95 | register int i = 0; | |
96 | ||
97 | if (dirent.d_ino == 0) | |
98 | continue; | |
99 | while (isdigit(*cp)) | |
100 | i = i * 10 + *cp++ - '0'; | |
101 | if (*cp) | |
102 | continue; | |
103 | if (i > lastmsg) | |
104 | lastmsg = i; | |
105 | if (i < firstmsg) | |
106 | firstmsg = i; | |
107 | } | |
108 | if (firstmsg == 25000) { | |
109 | firstmsg = 1; | |
110 | lastmsg = 0; | |
111 | } | |
112 | fclose(d); | |
113 | if (send) { | |
114 | unlink("bounds"); | |
115 | bounds = fopen("bounds", "w"); | |
116 | #ifdef CORY | |
117 | chmod("bounds", 0644); | |
118 | #else | |
119 | chmod("bounds", 0666); | |
120 | #endif | |
121 | if (bounds == NULL) | |
122 | perror("bounds"), exit(1); | |
123 | fprintf(bounds, "%d %d\n", firstmsg, lastmsg); | |
124 | fclose(bounds); | |
125 | } | |
126 | } else { | |
127 | fscanf(bounds, "%d %d\n", &firstmsg, &lastmsg); | |
128 | fclose(bounds); | |
129 | } | |
130 | if (send) { | |
131 | char newname[16]; | |
132 | FILE *newm; | |
133 | ||
134 | sprintf(newname, "%d", lastmsg+1); | |
135 | bounds = fopen("bounds", "w"); | |
136 | if (bounds == NULL) | |
137 | perror("bounds"), exit(1); | |
138 | fprintf(bounds, "%d %d\n", firstmsg, lastmsg+1); | |
139 | fclose(bounds); | |
140 | newm = fopen(newname, "w"); | |
141 | if (newm == NULL) | |
142 | fprintf(stderr, "/usr/msgs/"), perror(newname), exit(1); | |
143 | chmod(newname, 0644); | |
144 | for (;;) { | |
145 | register c; | |
146 | c = getchar(); | |
147 | if (feof(stdin)) | |
148 | exit(0); | |
149 | if (ferror(stdin)) | |
150 | exit(1); | |
151 | putc(c, newm); | |
152 | } | |
153 | } | |
154 | if (!newrc) | |
155 | firstmsg = rcfirst; | |
156 | already = 0; | |
157 | for (i = firstmsg; i <= lastmsg; i++) { | |
158 | register int c; | |
159 | char inline[BUFSIZ]; | |
160 | struct stat stbuf; | |
161 | char fname[16]; | |
162 | ||
163 | sprintf(fname, "%d", i); | |
164 | f = fopen(fname, "r"); | |
165 | if (f == NULL) | |
166 | continue; | |
167 | if (qopt) { | |
168 | fseek(msgsrc, (long) 0, 0); | |
169 | fprintf(msgsrc, "%d\n", nextty); | |
170 | fflush(msgsrc); | |
171 | printf("There are new messages.\n"); | |
172 | exit(0); | |
173 | } | |
174 | if (already) | |
175 | printf("\n"); | |
176 | already = 1; | |
177 | fseek(msgsrc, (long) 0, 0); | |
178 | fprintf(msgsrc, "%d\n", nextty); | |
179 | fflush(msgsrc); | |
180 | printf("Message %d:\n", i); | |
181 | fgets(inline, sizeof inline, f); | |
182 | printf("%s", inline); | |
183 | if (fgets(inline, sizeof inline, f)) { | |
184 | if (strcmp(inline, "To: msgs\n") != 0 && inline[0] != '\n') | |
185 | printf("%s", inline); | |
186 | if (fgets(inline, sizeof inline, f) && inline[0] != '\n') | |
187 | printf("%s", inline); | |
188 | } | |
189 | c = getc(f); | |
190 | sep = "-"; | |
191 | if (c == '\n') | |
192 | c = getc(f); | |
193 | if (!feof(f)) | |
194 | printf("(%d more lines)", linecnt(f)); | |
195 | if (hdrs) { | |
196 | printf("\n-----\n"); | |
197 | fclose(f); | |
198 | continue; | |
199 | } | |
200 | if (feof(f)) | |
201 | printf("(continue) [yq] "); | |
202 | else | |
203 | printf(" type [ynq] ? "); | |
204 | fflush(stdout); | |
205 | inline[0] = 0; | |
206 | fgets(inline, sizeof inline, stdin); | |
207 | if (inline[0] == 0) | |
208 | printf("\n"); | |
209 | if (inline[0] == 'q') | |
210 | exit(1); | |
211 | if (isdigit(inline[0])) { | |
212 | sscanf(inline, "%d", &i); | |
213 | printf("--Goto %d--\n", i); | |
214 | i--; | |
215 | fflush(stdout); | |
216 | fclose(f); | |
217 | continue; | |
218 | } | |
219 | if (inline[0] == 'n' || inline[0] == 'N') { | |
220 | printf("--Flushed--\n"); | |
221 | fflush(stdout); | |
222 | fclose(f); | |
223 | if (i >= nextty) | |
224 | nextty = i + 1; | |
225 | continue; | |
226 | } | |
227 | if (ruptible) | |
228 | signal(SIGINT, onintr); | |
229 | if (!feof(f)) | |
230 | for (;;) { | |
231 | putchar(c); | |
232 | c = getc(f); | |
233 | if (feof(f)) | |
234 | break; | |
235 | } | |
236 | printf("--%s--\n", sep); | |
237 | if (i >= nextty) | |
238 | nextty = i + 1; | |
239 | fflush(stdout); | |
240 | if (ruptible) | |
241 | signal(SIGINT, SIG_DFL); | |
242 | fclose(f); | |
243 | } | |
244 | fseek(msgsrc, (long) 0, 0); | |
245 | fprintf(msgsrc, "%d\n", nextty); | |
246 | fclose(msgsrc); | |
247 | if (qopt) | |
248 | exit(0); | |
249 | if (!already && !hush) | |
250 | printf("No messages.\n"); | |
251 | exit(0); | |
252 | } | |
253 | ||
254 | onintr() | |
255 | { | |
256 | ||
257 | sep = "Skip"; | |
258 | printf("\n"); | |
259 | fseek(f, (long) 0, 2); | |
260 | } | |
261 | ||
262 | linecnt(f) | |
263 | FILE *f; | |
264 | { | |
265 | int l = 0; | |
266 | char lbuf[BUFSIZ]; | |
267 | int c = 0; | |
268 | ||
269 | while (fgets(lbuf, sizeof lbuf, f)) | |
270 | l++, c += strlen(lbuf); | |
271 | clearerr(f); | |
272 | fseek(f, (long) -c, 1); | |
273 | return (l); | |
274 | } |