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#include "libjwgc.h"Go to the source code of this file.
Functions | |
| int | get_netport () |
| int | make_netsocket (u_short port, char *host, int type) |
| in_addr * | make_addr (char *host) |
| int | set_fd_close_on_exec (int fd, int flag) |
Variables | |
| int | __Xode_port = -1 |
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Definition at line 57 of file JNetSock.c. 00058 {
00059 return __Xode_port;
00060 }
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Definition at line 141 of file JNetSock.c. References MAXHOSTNAMELEN, and NULL. Referenced by make_netsocket(). 00142 {
00143 struct hostent *hp;
00144 static struct in_addr addr;
00145 char myname[MAXHOSTNAMELEN + 1];
00146
00147 if (host == NULL || strlen(host) == 0) {
00148 gethostname(myname, MAXHOSTNAMELEN);
00149 hp = gethostbyname(myname);
00150 if (hp != NULL) {
00151 return (struct in_addr *) * hp->h_addr_list;
00152 }
00153 }
00154 else {
00155 addr.s_addr = inet_addr(host);
00156 if (addr.s_addr != -1) {
00157 return &addr;
00158 }
00159 hp = gethostbyname(host);
00160 if (hp != NULL) {
00161 return (struct in_addr *) * hp->h_addr_list;
00162 }
00163 }
00164 return NULL;
00165 }
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Definition at line 63 of file JNetSock.c. References __Xode_port, make_addr(), and NULL. Referenced by jab_start(). 00064 {
00065 int s, flag = 1;
00066 struct sockaddr_in sa;
00067 struct in_addr *saddr;
00068 int socket_type, len;
00069
00070 /* is this a UDP socket or a TCP socket? */
00071 socket_type = (type == NETSOCKET_UDP) ? SOCK_DGRAM : SOCK_STREAM;
00072
00073 bzero((void *) &sa, sizeof(struct sockaddr_in));
00074
00075 if ((s = socket(AF_INET, socket_type, 0)) < 0)
00076 return (-1);
00077 if (setsockopt(s, SOL_SOCKET, SO_REUSEADDR, (char *) &flag, sizeof(flag)) < 0)
00078 return (-1);
00079
00080 saddr = make_addr(host);
00081 if (saddr == NULL && type != NETSOCKET_UDP)
00082 return (-1);
00083 sa.sin_family = AF_INET;
00084 sa.sin_port = htons(port);
00085
00086 if (type == NETSOCKET_SERVER) {
00087 /* bind to specific address if specified */
00088 if (host != NULL)
00089 sa.sin_addr.s_addr = saddr->s_addr;
00090
00091 if (bind(s, (struct sockaddr *) & sa, sizeof sa) < 0) {
00092 close(s);
00093 return (-1);
00094 }
00095
00096 if (!sa.sin_port) {
00097 len = sizeof(sa);
00098 if (getsockname(s, (struct sockaddr *) & sa, &len) < 0) {
00099 close(s);
00100 return (-1);
00101 }
00102 }
00103
00104 if (listen(s, 10) < 0) {
00105 close(s);
00106 return (-1);
00107 }
00108
00109 __Xode_port = ntohs(sa.sin_port);
00110 }
00111 if (type == NETSOCKET_CLIENT) {
00112 sa.sin_addr.s_addr = saddr->s_addr;
00113 if (connect(s, (struct sockaddr *) & sa, sizeof sa) < 0) {
00114 close(s);
00115 return (-1);
00116 }
00117 }
00118 if (type == NETSOCKET_UDP) {
00119 /* bind to all addresses for now */
00120 if (bind(s, (struct sockaddr *) & sa, sizeof sa) < 0) {
00121 close(s);
00122 return (-1);
00123 }
00124
00125 /* if specified, use a default recipient for read/write */
00126 if (host != NULL && saddr != NULL) {
00127 sa.sin_addr.s_addr = saddr->s_addr;
00128 if (connect(s, (struct sockaddr *) & sa, sizeof sa) < 0) {
00129 close(s);
00130 return (-1);
00131 }
00132 }
00133 }
00134
00135
00136 return (s);
00137 }
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Definition at line 172 of file JNetSock.c. 00173 {
00174 int oldflags = fcntl(fd, F_GETFL);
00175 int newflags;
00176
00177 if (flag)
00178 newflags = oldflags | FD_CLOEXEC;
00179 else
00180 newflags = oldflags & (~FD_CLOEXEC);
00181
00182 if (newflags == oldflags)
00183 return 0;
00184 return fcntl(fd, F_SETFL, (long) newflags);
00185 }
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Definition at line 54 of file JNetSock.c. Referenced by make_netsocket(). |
| Last updated at Tue Dec 18 21:07:42 PST 2007. | This site and project hosted by... |
