Optimize gcc10 compilation error

Set the maximum number of open files per process

CProxy.conf

@@ -2,7 +2,7 @@ global {
     uid=3004;
     process=2;
     timeout=60;
-    sslencoding=128;
+    encode=128;
     tcp_listen=0124;
     dns_listen=0125;
 }

Makefile

@@ -1,7 +1,7 @@
 CROSS_COMPILE ?= 
 CC := $(CROSS_COMPILE)gcc
 STRIP := $(CROSS_COMPILE)strip
-CFLAGS += -g -O2 -Wall -pthread -fcommon
+CFLAGS += -g -O2 -Wall -pthread
 LIBS = 
 OBJ := CProxy
 

conf.c

@@ -114,7 +114,7 @@ static void parse_global_module(char *content, conf * p)
             p->process = atoi(val_begin);
         } else if (strcasecmp(var, "timeout") == 0) {
             p->timeout = atoi(val_begin);
-        } else if (strcasecmp(var, "sslencoding") == 0) {
+        } else if (strcasecmp(var, "encode") == 0) {
             p->sslencoding = atoi(val_begin);
         } else if (strcasecmp(var, "tcp_listen") == 0) {
             p->tcp_listen = atoi(val_begin);

http_proxy.c

@@ -2,6 +2,8 @@
 #include "main.h"
 
 int sslEncodeCode;
+int remote_port;
+char remote_host[128];
 
 /* 对数据进行编码 */
 void dataEncode(char *data, int data_len)

http_proxy.h

@@ -7,9 +7,8 @@
 #define HTTP_TYPE 0
 #define OTHER_TYPE 1
 
-int remote_port;
-char remote_host[128];
-
+extern int remote_port;
+extern char remote_host[128];
 extern int sslEncodeCode;
 
 typedef struct conn_t {

httpdns.c

@@ -13,6 +13,8 @@ char *cachePath = NULL;
 struct dns_cache *cache, *cache_temp;
 socklen_t addr_len = sizeof(dst_addr);
 unsigned int cache_using, cacheLimit;
+dns_t dns_list[DNS_MAX_CONNECTION];
+struct epoll_event evs[DNS_MAX_CONNECTION+1], event;
 
 int read_cache_file()
 {
@@ -152,9 +154,9 @@ void respond_clients()
                 dns_list[i].wait_response_client = 0;
         }
     }
-    ev.events = EPOLLIN;
-    ev.data.fd = dnsListenFd;
-    epoll_ctl(dns_efd, EPOLL_CTL_MOD, dnsListenFd, &ev);
+    event.events = EPOLLIN;
+    event.data.fd = dnsListenFd;
+    epoll_ctl(dns_efd, EPOLL_CTL_MOD, dnsListenFd, &event);
 }
 
 /* 分析DNS请求 */
@@ -245,9 +247,9 @@ int build_dns_response(dns_t * dns)
     }
     if (respond_client(dns) == 1) {
         dns->wait_response_client = 1;
-        ev.events = EPOLLIN | EPOLLOUT;
-        ev.data.fd = dnsListenFd;
-        epoll_ctl(dns_efd, EPOLL_CTL_MOD, dnsListenFd, &ev);
+        event.events = EPOLLIN | EPOLLOUT;
+        event.data.fd = dnsListenFd;
+        epoll_ctl(dns_efd, EPOLL_CTL_MOD, dnsListenFd, &event);
     }
 
     return 0;
@@ -263,9 +265,9 @@ void http_out(dns_t * out)
     if (write_len == out->http_request_len) {
         //puts("write success");
         free(out->http_request);
-        ev.events = EPOLLIN | EPOLLET;
-        ev.data.ptr = out;
-        epoll_ctl(dns_efd, EPOLL_CTL_MOD, out->fd, &ev);
+        event.events = EPOLLIN | EPOLLET;
+        event.data.ptr = out;
+        epoll_ctl(dns_efd, EPOLL_CTL_MOD, out->fd, &event);
     } else if (write_len > 0) {
         //puts("write a little");
         out->http_request_len -= write_len;
@@ -414,9 +416,9 @@ void new_client(conf *configure)
     dns->http_request_len = strlen(dns->http_request);
     //printf("%s\n", dns->http_request);
     
-    ev.events = EPOLLOUT | EPOLLERR | EPOLLET;
-    ev.data.ptr = dns;
-    epoll_ctl(dns_efd, EPOLL_CTL_ADD, dns->fd, &ev);
+    event.events = EPOLLOUT | EPOLLERR | EPOLLET;
+    event.data.ptr = dns;
+    epoll_ctl(dns_efd, EPOLL_CTL_ADD, dns->fd, &event);
 }
 
 void *httpdns_loop(void *p)
@@ -430,9 +432,9 @@ void *httpdns_loop(void *p)
         perror("epoll_create");
         return NULL;
     }
-    ev.data.fd = dnsListenFd;
-    ev.events = EPOLLIN;
-    epoll_ctl(dns_efd, EPOLL_CTL_ADD, dnsListenFd, &ev);
+    event.data.fd = dnsListenFd;
+    event.events = EPOLLIN;
+    epoll_ctl(dns_efd, EPOLL_CTL_ADD, dnsListenFd, &event);
     memset(dns_list, 0, sizeof(dns_list));
 
     while (1) {

httpdns.h

@@ -43,8 +43,8 @@ struct dns_cache {
     struct dns_cache *next;
 };
 
-dns_t dns_list[DNS_MAX_CONNECTION];
-struct epoll_event evs[DNS_MAX_CONNECTION+1], ev;
+extern dns_t dns_list[DNS_MAX_CONNECTION];
+extern struct epoll_event evs[DNS_MAX_CONNECTION+1], event;
 
 
 void *httpdns_loop(void *p);

main.c

@@ -14,6 +14,9 @@
 struct epoll_event ev, events[MAX_CONNECTION + 1];
 int epollfd, server_sock;
 conn cts[MAX_CONNECTION];
+int local_port;
+char local_host[128];
+int process;
 
 int create_connection(char *remote_host, int remote_port)
 {
@@ -227,6 +230,7 @@ void _main(int argc, char *argv[])
     char executable_filename[PATH_SIZE] = { 0 };
     (void)get_executable_path(path, executable_filename, sizeof(path));
     char *inifile = "/CProxy.conf";
+    struct rlimit rt;
     inifile = strcat(path, inifile);
     conf *configure = (struct CONF *)malloc(sizeof(struct CONF));
     memset(configure, 0, sizeof(struct CONF));
@@ -314,6 +318,12 @@ void _main(int argc, char *argv[])
         }
     }
 
+    // 设置每个进程允许打开的最大文件数
+    rt.rlim_max = rt.rlim_cur = MAX_CONNECTION * 2;
+    if (setrlimit(RLIMIT_NOFILE, &rt) == -1) {
+        perror("setrlimit");
+    }
+
     server_ini();               // 守护进程
     httpdns_initialize(configure); // 初始化http_dns
     memset(cts, 0, sizeof(cts));
@@ -378,4 +388,5 @@ void _main(int argc, char *argv[])
 int main(int argc, char *argv[])
 {
     _main(argc, argv);
+    return 0;
 }

main.h

@@ -19,15 +19,17 @@
 #include <sched.h>
 #include <getopt.h>
 #include <netinet/in.h>
+#include <sys/time.h>
+#include <sys/resource.h>
 
 #define MAX_CONNECTION 1020
 #define BUFFER_SIZE 8192
 #define PATH_SIZE 270
 #define CACHE_SIZE 270
 
-int local_port;
-char local_host[128];
-int process;
+extern int local_port;
+extern char local_host[128];
+extern int process;
 
 extern int epollfd;
 extern struct epoll_event ev, events[MAX_CONNECTION + 1];