1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
|
#include <stdio.h>
#include <stdlib.h>
#include "str/str.h"
#include "net/net.h"
#include "config/config.h"
struct {
str path;
str config_file;
str self;
} dir;
config conf;
http_server *server;
// remove this or something
int secure = 0;
void deinit(void);
static void quit(int sig, siginfo_t *info, void *ucontext){
log_info("Terminating due to SIG%s (%s)", sigabbrev_np(sig), sigdescr_np(sig));
deinit();
exit(0);
}
static int signal_wait(int sig){
sigset_t old, new;
sigemptyset(&new);
sigaddset(&new, sig);
if(sigprocmask(SIG_BLOCK, &new, &old) != 0){
return 1;
}
// TODO: try with NULL
int s;
if(sigwait(&new, &s) != 0){
return 1;
}
if(sigprocmask(SIG_SETMASK, &old, NULL) != 0){
return 1;
}
return 0;
}
static void reinit(int sig, siginfo_t *info, void *ucontext){
if(sig == SIGUSR1){
log_info("Reinitializing worker");
free_config(&conf);
destroy_http_server(&server);
if(signal_wait(SIGCONT) != 0){
log_error("You should probably look at signal_wait to see wtf is going on");
}
conf = read_config(dir.config_file.ptr);
if(conf.file.ptr == NULL){
log_error("Unable to read config from '%.*s'", dir.config_file.len, dir.config_file.ptr);
quit(SIGTERM, NULL, NULL);
}
server = setup_http_server(conf.port, conf.backlog);
if(server == NULL){
log_error("Error setting up worker server");
quit(SIGTERM, NULL, NULL);
}
}
}
// possibly change name
static int read_server_dir(str name){
dir.path = dup_strs(sstr("/var/run/"), name, sstr("/"));
if(!dir_exists(dir.path.ptr)){
log_error("No server directory in '%.*s'", dir.path.len, dir.path.ptr);
return 1;
}
dir.config_file = dup_strs(dir.path, sstr("configfile"));
if(!file_exists(dir.config_file.ptr)){
log_error("No config file in '%.*s'", dir.config_file.len, dir.config_file.ptr);
return 1;
}
// TODO: revise this
str pid = utostr(getpid(), 10);
dir.self = dup_strs(dir.path, sstr("workers/"), pid);
free_str(&pid);
if(creat(dir.self.ptr, 0777) == -1){
log_error("Error creating PID record for self in '%.*s': %s", dir.self.len, dir.self.ptr, strerror(errno));
return 1;
}
return 0;
}
// possibly change name
static void remove_server_dir(void){
if(remove(dir.self.ptr) != 0){
log_error("Error removing PID record for self in '%.*s': %s", dir.self.len, dir.self.ptr, strerror(errno));
}
free_str(&dir.self);
free_str(&dir.config_file);
free_str(&dir.path);
}
int init(str name){
if(read_server_dir(name) != 0){
log_error("Error reading server directory");
return 1;
}
conf = read_config(dir.config_file.ptr);
if(conf.file.ptr == NULL){
log_error("Unable to read config from '%.*s'", dir.config_file.len, dir.config_file.ptr);
return 1;
}
//print_worker_config(config);
server = setup_http_server(conf.port, conf.backlog);
if(server == NULL){
log_error("Error setting up worker server");
return 1;
}
if(conf.secure){
if(setup_https(server, conf.cert, conf.key)){
log_error("Error setting up HTTPS in the server");
return 1;
}
}
struct sigaction rnit = { .sa_sigaction = reinit, .sa_flags = SA_SIGINFO };
if(sigaction(SIGUSR1, &rnit, NULL) == -1){
log_error("Error setting up SIGUSR1 signal handler: %s", strerror(errno));
return 1;
}
struct sigaction qit = { .sa_sigaction = quit, .sa_flags = SA_SIGINFO };
if(sigaction(SIGTERM, &qit, NULL) == -1){
log_error("Error setting up SIGTERM signal handler: %s", strerror(errno));
return 1;
}
if(sigaction(SIGQUIT, &qit, NULL) == -1){
log_error("Error setting up SIGQUIT signal handler: %s", strerror(errno));
return 1;
}
if(sigaction(SIGINT, &qit, NULL) == -1){
log_error("Error setting up SIGINT signal handler: %s", strerror(errno));
return 1;
}
return 0;
}
void deinit(void){
destroy_http_server(&server);
free_config(&conf);
remove_server_dir();
}
int main(int argc, char **argv){
if(argc < 2){
printf("worker [server name]\n");
return 1;
}
int ret = 0;
if(init(dsstr(argv[1])) != 0){
ret = 1;
goto DEINIT;
}
log_info("init'd");
str request = {.cap = 8192, .len = 0, .ptr = alloca(8192)};
// TODO: lookup shutdown() for sockets
while(1){
char cip[INET_ADDRSTRLEN] = {0};
ret = accept_connection(server, cip);
if(ret != 0){ // couldnt accept, do something ig
if(ret == SSL_ERROR_SSL) reset_https(server);
log_info("continuing\n");
continue;
}
log_info("socket %d accepted with ip %s", server->csocket, cip);
ret = receive_request(server, &request);
log_debug("received %d from receive_request", ret);
if(ret <= 0){
if(ret == SSL_ERROR_SSL) reset_https(server);
log_info("continuing\n");
goto finish_request;
}
log_debug("%d: '%.*s'\n", request.len, request.len, request.ptr);
struct http_message hm = {0};
build_http_message(request.ptr, request.len, &hm);
log_info("url before: %.*s", hm.url.len, hm.url.ptr);
url surl = sanitize_url(hm.url);
log_info("uri after: '%.*s' ? '%.*s'", surl.path.len, surl.path.ptr, surl.query.len, surl.query.ptr);
enum http_method method = get_http_method(hm.method);
switch(method){
case GET:
str resource = generate_resource(surl, hm.url);
send_file(server, resource);
//if(resource.temp == true) remove(resource.name.ptr);
free_str(&resource);
break;
case POST:
//handlePOST(request);
send(server->csocket, "HTTP/1.1 201 Created\r\n\r\n", len("HTTP/1.1 201 Created\r\n\r\n"), 0);
break;
case PUT:
break;
case DELETE:
break;
default:
break;
}
free_url(&surl);
finish_request:
request.len = 0;
if(server->secure){
SSL_clear(server->ssl);
}
close(server->csocket);
//SSL_shutdown(config.ssl); // look into SSL_clear()
log_debug("end of loop");
}
DEINIT:
deinit();
log_info("Worker %d dieing :(", getpid());
return ret;
}
/*
struct timespec t_start, t_end;
#define start_timing() clock_gettime(CLOCK_MONOTONIC, &t_start)
#define end_timing() clock_gettime(CLOCK_MONOTONIC, &t_end)
double get_timing(void){
uint64_t diff = (t_end.tv_sec*1000000000 + t_end.tv_nsec) - (t_start.tv_sec*1000000000 + t_start.tv_nsec);
return diff/1000000000.0;
}
*/
|
