19 |
*/ |
*/ |
20 |
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|
21 |
#include "boa.h" |
#include "boa.h" |
22 |
|
#include <signal.h> /* signal */ |
23 |
|
|
24 |
/* Hydra Internally handled CGIs (HIC HIC) |
/* Hydra Internally handled CGIs (HIC HIC) |
25 |
* |
* |
29 |
* uses one pipe to communicate with the others via hic_send_command(). |
* uses one pipe to communicate with the others via hic_send_command(). |
30 |
* |
* |
31 |
* If a request for a HIC file arrives, the server goes as a normal CGI |
* If a request for a HIC file arrives, the server goes as a normal CGI |
32 |
* creates a pipe, but does not fork. It sends instead a message to this |
* creates a pipe, but does not fork. It enqueues a hic_request |
33 |
* (HIC) thread to handle the request which includes the output fd. |
* for this (HIC) thread, and sends a SIGUSR2 signal. The HIC thread is then |
34 |
|
* waken up, and handles all pending requests. |
35 |
* |
* |
36 |
* The HIC thread, when receives the message, parses the CGI in |
* The HIC thread, when receives the message, parses the CGIs, |
37 |
* FIFO mode (one CGI at the time), and sends the output to fd. |
* one CGI at the time, and sends the output to fd. |
38 |
* |
* |
39 |
* The benefit is that in no case the server is blocked. We may have |
* The benefit is that in no case the server is blocked. We may have |
40 |
* a problem, if the server only uses parsed CGIs. |
* a performance problem, if the server only uses parsed CGIs. |
41 |
|
* |
42 |
*/ |
*/ |
43 |
|
|
44 |
#ifdef ENABLE_HIC |
#ifdef ENABLE_HIC |
45 |
|
|
46 |
#include "hic.h" |
#include "hic.h" |
47 |
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|
48 |
static ssize_t full_read(int fd, void *buf, size_t count); |
#ifdef ENABLE_SMP |
49 |
static ssize_t full_write(int fd, const void *buf, size_t count); |
pthread_mutex_t hic_lock = PTHREAD_MUTEX_INITIALIZER; |
50 |
static int process_command(hic_stuff * cmd); |
#endif |
51 |
|
|
52 |
void* hic_main_loop( void* cml) |
typedef struct _hic_request { |
53 |
{ |
struct _hic_request *next; |
54 |
int max_fd, ret; |
struct _hic_request *prev; |
55 |
struct timeval req_timeout; |
hic_stuff command; |
56 |
fd_set read_fdset; |
} hic_request; |
57 |
hic_stuff cmd; |
|
58 |
int *command_line = cml; /* this is an int[2] */ |
hic_request * hic_request_head = NULL; |
59 |
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|
60 |
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static int process_hic_request(hic_request * cmd); |
61 |
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void hic_dequeue(hic_request ** head, hic_request * req); |
62 |
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void hic_enqueue(hic_request ** head, hic_request * req); |
63 |
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int hic_sigchld_flag = 0; /* if we received a SIGCHLD signal, then this flag |
64 |
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* is non zero */ |
65 |
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|
66 |
FD_ZERO(&read_fdset); |
void *hic_main_loop(void *cml) |
67 |
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{ |
68 |
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hic_request* current, *next; |
69 |
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|
70 |
while (1) { |
while (1) { |
71 |
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for (current = hic_request_head;current;current=next) { |
72 |
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|
73 |
time(¤t_time); |
#ifdef ENABLE_SMP |
74 |
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pthread_mutex_lock(&hic_lock); |
75 |
req_timeout.tv_sec = REQUEST_TIMEOUT; |
#endif |
76 |
req_timeout.tv_usec = 0l; /* reset timeout */ |
next = current->next; |
77 |
|
#ifdef ENABLE_SMP |
78 |
max_fd = -1; |
pthread_mutex_unlock(&hic_lock); |
79 |
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#endif |
|
FD_SET(command_line[0], &read_fdset); |
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max_fd = command_line[0]; |
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if (select(max_fd + 1, &read_fdset, NULL, NULL, &req_timeout) == -1) { |
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if (errno == EINTR) |
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continue; /* while(1) */ |
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else if (errno != EBADF) { |
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log_error_time(); |
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fprintf(stderr, "hic: Error while processing command. %s.\n", strerror(errno)); |
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exit(1); |
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} |
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} |
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if (FD_ISSET(command_line[0], &read_fdset)) { |
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/* read a command */ |
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if ((ret = |
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full_read(command_line[0], &cmd, |
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sizeof(cmd))) < sizeof(cmd)) { |
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log_error_time(); |
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if (ret == 0) { /* normal shutdown */ |
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log_error_time(); |
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fprintf(stderr, "Shutting down..."); |
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close(command_line[0]); |
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return NULL; |
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} |
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fprintf(stderr, "hic: Error while receiving command. %s.\n", |
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strerror(errno)); |
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exit(1); |
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} |
|
80 |
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|
81 |
if (process_command(&cmd) == -1) { |
if (process_hic_request( current) == -1) { |
82 |
log_error_time(); |
log_error_time(); |
83 |
fprintf(stderr, "hic: Error while processing command.\n"); |
fprintf(stderr, "hic: Error while processing command.\n"); |
84 |
exit(1); |
exit(1); |
85 |
} |
} |
86 |
} |
} |
87 |
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|
88 |
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/* If somebody sends a command, then he should |
89 |
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* send a sigusr2 as well. |
90 |
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*/ |
91 |
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if (!hic_request_head) pause(); |
92 |
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|
93 |
|
if (hic_sigchld_flag) |
94 |
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sigchld_run(); |
95 |
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|
96 |
|
|
97 |
} |
} |
98 |
|
|
99 |
} |
} |
100 |
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|
101 |
static int process_command(hic_stuff * cmd) |
static int process_hic_request(hic_request * req) |
102 |
{ |
{ |
103 |
hic_module_st * hst; |
hic_module_st *hst; |
104 |
|
hic_stuff* cmd = &req->command; |
105 |
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|
106 |
|
#ifdef ENABLE_SMP |
107 |
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pthread_mutex_lock(&hic_lock); |
108 |
|
#endif |
109 |
|
hic_dequeue( &hic_request_head, req); |
110 |
|
#ifdef ENABLE_SMP |
111 |
|
pthread_mutex_unlock(&hic_lock); |
112 |
|
#endif |
113 |
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|
114 |
hst = find_hic_appr_module( get_mime_type(cmd->path_translated), 0); |
hst = find_hic_appr_module(get_mime_type(cmd->path_translated), 0); |
115 |
if (hst == NULL) { |
if (hst == NULL) { |
116 |
log_error_time(); |
log_error_time(); |
117 |
fprintf(stderr, "Could not find HIC handler for '%s'\n", cmd->path_translated); |
fprintf(stderr, "Could not find HIC handler for '%s'\n", |
118 |
close( cmd->out_fd); |
cmd->path_translated); |
119 |
|
close(cmd->out_fd); |
120 |
|
free( req); |
121 |
return 0; |
return 0; |
122 |
} |
} |
123 |
|
|
124 |
hst->request( cmd); |
hst->request(cmd); |
125 |
close( cmd->out_fd); |
close(cmd->out_fd); |
126 |
|
free( req); |
127 |
|
|
128 |
/* |
/* |
129 |
log_error_time(); |
log_error_time(); |
133 |
return 0; |
return 0; |
134 |
} |
} |
135 |
|
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static ssize_t full_read(int fd, void *buf, size_t count) |
|
|
{ |
|
|
size_t nleft; |
|
|
ssize_t nread; |
|
|
char *ptr; |
|
|
|
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ptr = buf; |
|
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nleft = count; |
|
|
while (nleft > 0) { |
|
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if ((nread = read(fd, ptr, nleft)) == -1) { |
|
|
if (errno == EINTR) { |
|
|
nread = 0; |
|
|
} else |
|
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return -1; |
|
|
} else if (nread == 0) |
|
|
break; |
|
|
|
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nleft -= nread; |
|
|
ptr += nread; |
|
|
} |
|
|
|
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return count - nleft; |
|
|
|
|
|
} |
|
|
|
|
|
static ssize_t full_write(int fd, const void *buf, size_t count) |
|
|
{ |
|
|
size_t nleft; |
|
|
ssize_t nwritten; |
|
|
const char *ptr; |
|
|
|
|
|
ptr = buf; |
|
|
nleft = count; |
|
|
while (nleft > 0) { |
|
|
if ((nwritten = write(fd, ptr, nleft)) == -1) { |
|
|
if (errno == EINTR) { |
|
|
nwritten = 0; |
|
|
} else |
|
|
return -1; |
|
|
} |
|
|
|
|
|
nleft -= nwritten; |
|
|
ptr += nwritten; |
|
|
} |
|
|
|
|
|
return count; |
|
|
|
|
|
} |
|
|
|
|
|
#ifdef ENABLE_SMP |
|
|
pthread_mutex_t hic_lock = PTHREAD_MUTEX_INITIALIZER; |
|
|
#endif |
|
|
|
|
|
extern int hic_write_fd; |
|
|
|
|
136 |
/* Sends a command to a HIC thread. |
/* Sends a command to a HIC thread. |
137 |
*/ |
*/ |
138 |
int hic_send_command( request *req, int out_fd) |
int hic_send_command(request * req, int out_fd) |
139 |
{ |
{ |
140 |
hic_stuff x; |
hic_request *x; |
|
int ret; |
|
141 |
|
|
142 |
x.cgi_env = req->cgi_env; |
x = malloc( sizeof( hic_request)); |
143 |
x.cgi_env_max = req->cgi_env_index; |
if (x==NULL) |
144 |
x.one_one = 0; |
return -1; |
145 |
x.post_data_fd = req->post_data_fd; |
|
146 |
x.out_fd = out_fd; |
x->next = x->prev = NULL; |
147 |
x.request_uri = req->request_uri; |
x->command.cgi_env = req->cgi_env; |
148 |
x.path_translated = req->path_translated; |
x->command.cgi_env_max = req->cgi_env_index; |
149 |
|
x->command.one_one = 0; |
150 |
|
x->command.post_data_fd = req->post_data_fd; |
151 |
|
x->command.out_fd = out_fd; |
152 |
|
x->command.request_uri = req->request_uri; |
153 |
|
x->command.path_translated = req->path_translated; |
154 |
|
|
155 |
#ifdef ENABLE_SMP |
#ifdef ENABLE_SMP |
156 |
pthread_mutex_lock( &hic_lock); |
pthread_mutex_lock(&hic_lock); |
157 |
#endif |
#endif |
158 |
|
|
159 |
ret = full_write( hic_write_fd, &x, sizeof(x)); |
hic_enqueue( &hic_request_head, x); |
|
|
|
160 |
#ifdef ENABLE_SMP |
#ifdef ENABLE_SMP |
161 |
pthread_mutex_unlock( &hic_lock); |
/* Notify the main loop */ |
162 |
|
pthread_kill( hic_tid, SIGUSR2); |
163 |
#endif |
#endif |
164 |
|
|
165 |
if (ret==sizeof(x)) return 1; |
#ifdef ENABLE_SMP |
166 |
|
pthread_mutex_unlock(&hic_lock); |
167 |
log_error_time(); |
#endif |
|
fprintf(stderr, "Error sending to HIC thread.\n"); |
|
|
/* this should be a fatal error */ |
|
|
|
|
|
return -1; |
|
|
|
|
|
} |
|
|
|
|
|
|
|
|
#endif /* ENABLE_HIC */ |
|
|
|
|
168 |
|
|
169 |
#ifdef TEST |
return 1; |
170 |
|
|
|
int main() |
|
|
{ |
|
|
int fd[2]; |
|
|
hic_stuff x; |
|
|
pthread_t tid; |
|
|
|
|
|
_php_hic_init(); |
|
|
|
|
|
memset( &x, 0, sizeof(x)); |
|
|
|
|
|
|
|
|
x.remote_address="127.0.0.1"; |
|
|
x.server_port = 8080; |
|
|
x.out_fd = STDOUT_FILENO; |
|
|
x.script_name = "/test.php"; |
|
|
x.content_type = "text/html; charset=ISO-8859-7"; |
|
|
x.query_string = "STRING"; |
|
|
x.path_translated = "/tmp/test.php"; |
|
|
x.request_uri = "/test.php"; |
|
|
x.path_info = "/tmp/test.php"; |
|
|
x.str_method = "GET"; |
|
|
x.server_name = "Hydra.localhost"; |
|
|
x.server_port = 80; |
|
|
x.http_version = "HTTP/1.1"; |
|
|
x.post_data_fd = -1; |
|
|
|
|
|
if (pipe( fd) < 0) { |
|
|
fprintf(stderr, "ERROR IN PIPE\n"); |
|
|
exit(1); |
|
171 |
} |
} |
172 |
|
|
173 |
pthread_create( &tid, NULL, &hic_main_loop, (void*)fd); |
/* Implement a basic queue for HIC stuff. This is created after |
174 |
|
* queue.c. |
175 |
fprintf(stderr, "Spawned %u\n", tid); |
*/ |
|
sleep(2); |
|
|
|
|
|
fprintf(stderr, "Written command\n"); |
|
|
write( fd[1], &x, sizeof(x)); |
|
|
|
|
|
sleep(5); |
|
|
|
|
|
close(fd[1]); |
|
|
|
|
|
pause(); |
|
176 |
|
|
177 |
return 0; |
#include "queue.h" |
|
} |
|
178 |
|
|
179 |
#endif |
ENQUEUE_FUNCTION( hic_enqueue, hic_request) |
180 |
|
DEQUEUE_FUNCTION( hic_dequeue, hic_request) |
181 |
|
|
182 |
|
#endif /* ENABLE_HIC */ |