author | viric@llimona |
Tue, 30 May 2006 12:58:46 +0200 | |
changeset 59 | a8776c046a53 |
parent 53 | 667cd5966695 |
permissions | -rw-r--r-- |
1 | 1 |
#include <unistd.h> // Per les crides a fitxer |
2 |
#include <stdio.h> // Per l'I/O de stdin/stdout |
|
3 |
#include <errno.h> // Pels errors de les crides a fitxer |
|
4 |
#include <string.h> // Per strerror() |
|
5 |
#include <stdlib.h> // Per abort() |
|
6 |
#include <sys/types.h> // Per crides de fitxer |
|
7 |
#include <sys/stat.h> // Per crides de fitxer |
|
8 |
#include <fcntl.h> // Per crides de fitxer |
|
9 |
#include <stdbool.h> // Per les macros bool,true,false |
|
8 | 10 |
#include <unistd.h> // Pel lockf() |
11 |
#include <fcntl.h> // Pel lockf() |
|
0 | 12 |
|
13 |
#include "rfc3164.h" |
|
26 | 14 |
#include "syslog.h" |
0 | 15 |
|
16 |
||
1 | 17 |
void showHelp(const char * restrict program) |
0 | 18 |
{ |
19 |
printf("Usage: %s <named_fifo>\n", program); |
|
20 |
} |
|
21 |
||
1 | 22 |
bool isNamedPipe(const char * restrict path) |
23 |
{ |
|
24 |
struct stat tmpStatus; |
|
25 |
int result; |
|
26 |
||
27 |
result = stat(path, &tmpStatus); |
|
28 |
if (result == -1) |
|
29 |
{ |
|
15
fea6e87812f0
Now everything works - the rfc3164 message parser must be improved.
viric@llimona
parents:
14
diff
changeset
|
30 |
fprintf(stderr, "Error trying to stat the file: %s\n", |
1 | 31 |
strerror(errno)); |
32 |
abort(); |
|
33 |
} |
|
34 |
||
35 |
||
36 |
if (S_ISFIFO(tmpStatus.st_mode)) |
|
37 |
return true; |
|
38 |
||
39 |
return false; |
|
40 |
} |
|
41 |
||
8 | 42 |
int pipe_server(const char * restrict filename) |
0 | 43 |
{ |
44 |
int fd_entrada; |
|
45 |
char missatge[MESSAGE_LENGTH]; |
|
5 | 46 |
int status; |
8 | 47 |
struct flock blocking; |
48 |
||
49 |
blocking.l_type = F_RDLCK; |
|
50 |
blocking.l_whence = SEEK_SET; |
|
51 |
blocking.l_start = 0; |
|
52 |
blocking.l_len = 0; |
|
53 |
||
54 |
while(true) |
|
55 |
{ |
|
56 |
/* Obrim la named fifo síncrona. */ |
|
57 |
fd_entrada = open(filename, O_RDONLY); |
|
58 |
if (fd_entrada < 0) { |
|
15
fea6e87812f0
Now everything works - the rfc3164 message parser must be improved.
viric@llimona
parents:
14
diff
changeset
|
59 |
fprintf(stderr, "Error opening the named pipe: %s\n", |
8 | 60 |
strerror(errno)); |
61 |
return 1; |
|
62 |
} |
|
63 |
||
64 |
status = fcntl(fd_entrada, F_SETLKW, &blocking); |
|
65 |
if (fd_entrada < 0) { |
|
15
fea6e87812f0
Now everything works - the rfc3164 message parser must be improved.
viric@llimona
parents:
14
diff
changeset
|
66 |
fprintf(stderr, "Error locking the named pipe: %s\n", |
8 | 67 |
strerror(errno)); |
68 |
return 1; |
|
69 |
} |
|
70 |
||
71 |
while ((status = read(fd_entrada, missatge, |
|
14 | 72 |
MESSAGE_LENGTH)) > 0) |
8 | 73 |
{ |
74 |
process_message(missatge); |
|
15
fea6e87812f0
Now everything works - the rfc3164 message parser must be improved.
viric@llimona
parents:
14
diff
changeset
|
75 |
/* Debug */ |
fea6e87812f0
Now everything works - the rfc3164 message parser must be improved.
viric@llimona
parents:
14
diff
changeset
|
76 |
if(!strcmp(missatge,"close")) |
fea6e87812f0
Now everything works - the rfc3164 message parser must be improved.
viric@llimona
parents:
14
diff
changeset
|
77 |
{ |
fea6e87812f0
Now everything works - the rfc3164 message parser must be improved.
viric@llimona
parents:
14
diff
changeset
|
78 |
/* Code duplication !! */ |
fea6e87812f0
Now everything works - the rfc3164 message parser must be improved.
viric@llimona
parents:
14
diff
changeset
|
79 |
blocking.l_type = F_UNLCK; |
fea6e87812f0
Now everything works - the rfc3164 message parser must be improved.
viric@llimona
parents:
14
diff
changeset
|
80 |
status = fcntl(fd_entrada, F_SETLKW, &blocking); |
fea6e87812f0
Now everything works - the rfc3164 message parser must be improved.
viric@llimona
parents:
14
diff
changeset
|
81 |
if (fd_entrada < 0) { |
fea6e87812f0
Now everything works - the rfc3164 message parser must be improved.
viric@llimona
parents:
14
diff
changeset
|
82 |
fprintf(stderr, |
fea6e87812f0
Now everything works - the rfc3164 message parser must be improved.
viric@llimona
parents:
14
diff
changeset
|
83 |
"Error unlocking the named " |
fea6e87812f0
Now everything works - the rfc3164 message parser must be improved.
viric@llimona
parents:
14
diff
changeset
|
84 |
"pipe: %s\n", |
fea6e87812f0
Now everything works - the rfc3164 message parser must be improved.
viric@llimona
parents:
14
diff
changeset
|
85 |
strerror(errno)); |
fea6e87812f0
Now everything works - the rfc3164 message parser must be improved.
viric@llimona
parents:
14
diff
changeset
|
86 |
abort(); |
fea6e87812f0
Now everything works - the rfc3164 message parser must be improved.
viric@llimona
parents:
14
diff
changeset
|
87 |
} |
fea6e87812f0
Now everything works - the rfc3164 message parser must be improved.
viric@llimona
parents:
14
diff
changeset
|
88 |
close (fd_entrada); |
fea6e87812f0
Now everything works - the rfc3164 message parser must be improved.
viric@llimona
parents:
14
diff
changeset
|
89 |
/* End of code duplication */ |
16
de00e98450eb
Versió 1 quasi per entregar. Falta molt RFC per implementar.
viric@llimona
parents:
15
diff
changeset
|
90 |
return 0; |
15
fea6e87812f0
Now everything works - the rfc3164 message parser must be improved.
viric@llimona
parents:
14
diff
changeset
|
91 |
} |
53
667cd5966695
Finer message processing - now only at file and screen output appear '\n'.
viric@llimona
parents:
26
diff
changeset
|
92 |
write(1, missatge, status); |
8 | 93 |
} |
94 |
||
95 |
if (status < 0) |
|
96 |
{ |
|
15
fea6e87812f0
Now everything works - the rfc3164 message parser must be improved.
viric@llimona
parents:
14
diff
changeset
|
97 |
fprintf(stderr, "Error reading the named pipe: %s\n", |
8 | 98 |
strerror(errno)); |
15
fea6e87812f0
Now everything works - the rfc3164 message parser must be improved.
viric@llimona
parents:
14
diff
changeset
|
99 |
/* Code duplication !! */ |
8 | 100 |
blocking.l_type = F_UNLCK; |
101 |
status = fcntl(fd_entrada, F_SETLKW, &blocking); |
|
102 |
if (fd_entrada < 0) { |
|
15
fea6e87812f0
Now everything works - the rfc3164 message parser must be improved.
viric@llimona
parents:
14
diff
changeset
|
103 |
fprintf(stderr, |
fea6e87812f0
Now everything works - the rfc3164 message parser must be improved.
viric@llimona
parents:
14
diff
changeset
|
104 |
"Error unlocking the named pipe: %s\n", |
8 | 105 |
strerror(errno)); |
106 |
abort(); |
|
107 |
} |
|
108 |
close (fd_entrada); |
|
15
fea6e87812f0
Now everything works - the rfc3164 message parser must be improved.
viric@llimona
parents:
14
diff
changeset
|
109 |
/* End of code duplication */ |
8 | 110 |
return 1; |
111 |
} |
|
16
de00e98450eb
Versió 1 quasi per entregar. Falta molt RFC per implementar.
viric@llimona
parents:
15
diff
changeset
|
112 |
/* Code duplication !! */ |
de00e98450eb
Versió 1 quasi per entregar. Falta molt RFC per implementar.
viric@llimona
parents:
15
diff
changeset
|
113 |
blocking.l_type = F_UNLCK; |
de00e98450eb
Versió 1 quasi per entregar. Falta molt RFC per implementar.
viric@llimona
parents:
15
diff
changeset
|
114 |
status = fcntl(fd_entrada, F_SETLKW, &blocking); |
de00e98450eb
Versió 1 quasi per entregar. Falta molt RFC per implementar.
viric@llimona
parents:
15
diff
changeset
|
115 |
if (fd_entrada < 0) { |
de00e98450eb
Versió 1 quasi per entregar. Falta molt RFC per implementar.
viric@llimona
parents:
15
diff
changeset
|
116 |
fprintf(stderr, |
de00e98450eb
Versió 1 quasi per entregar. Falta molt RFC per implementar.
viric@llimona
parents:
15
diff
changeset
|
117 |
"Error unlocking the named pipe: %s\n", |
de00e98450eb
Versió 1 quasi per entregar. Falta molt RFC per implementar.
viric@llimona
parents:
15
diff
changeset
|
118 |
strerror(errno)); |
de00e98450eb
Versió 1 quasi per entregar. Falta molt RFC per implementar.
viric@llimona
parents:
15
diff
changeset
|
119 |
abort(); |
de00e98450eb
Versió 1 quasi per entregar. Falta molt RFC per implementar.
viric@llimona
parents:
15
diff
changeset
|
120 |
} |
de00e98450eb
Versió 1 quasi per entregar. Falta molt RFC per implementar.
viric@llimona
parents:
15
diff
changeset
|
121 |
close (fd_entrada); |
de00e98450eb
Versió 1 quasi per entregar. Falta molt RFC per implementar.
viric@llimona
parents:
15
diff
changeset
|
122 |
/* End of code duplication */ |
8 | 123 |
} |
124 |
||
125 |
} |
|
126 |
||
127 |
int main(int argn, char **argv) |
|
128 |
{ |
|
0 | 129 |
|
130 |
/* Processem els paràmetres d'entrada */ |
|
131 |
if (argn != 2) { |
|
132 |
showHelp(argv[0]); |
|
133 |
return 2; |
|
134 |
} |
|
135 |
||
136 |
/* Comprovem que existeix i és una named pipe */ |
|
137 |
/* !!! */ |
|
1 | 138 |
if(!isNamedPipe(argv[1])) // Abortarà si falla |
139 |
{ |
|
15
fea6e87812f0
Now everything works - the rfc3164 message parser must be improved.
viric@llimona
parents:
14
diff
changeset
|
140 |
fprintf(stderr, "The file is not of a named pipe.\n"); |
1 | 141 |
abort(); |
142 |
}; |
|
0 | 143 |
|
26 | 144 |
program_ignore_hup(); |
8 | 145 |
return pipe_server(argv[1]); |
0 | 146 |
} |