[0] | 1 | //socket.c: |
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| 2 | |
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| 3 | #include "libroar.h" |
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| 4 | |
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| 5 | #define MODE_LISTEN 1 |
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| 6 | #define MODE_CONNECT 2 |
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| 7 | |
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| 8 | int roar_socket_new_tcp (void) { |
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| 9 | int fh; |
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| 10 | // int extra_flags = TCP_NODELAY; |
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| 11 | |
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| 12 | fh = socket(PF_INET, SOCK_STREAM, 0); |
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| 13 | |
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| 14 | return fh; |
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| 15 | } |
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| 16 | |
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| 17 | int roar_socket_new_unix (void) { |
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| 18 | int fh; |
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| 19 | |
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| 20 | fh = socket(AF_UNIX, SOCK_STREAM, 0); |
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| 21 | |
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| 22 | return fh; |
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| 23 | } |
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| 24 | |
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| 25 | int roar_socket_nonblock(int fh, int state) { |
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| 26 | int flags; |
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| 27 | |
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| 28 | if ( (flags = fcntl(fh, F_GETFL, 0)) == -1 ) { |
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| 29 | ROAR_ERR("roar_socket_nonblock(fh=%i, state=%i): Can not read flags: %s", fh, state, strerror(errno)); |
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| 30 | ROAR_DBG("roar_socket_nonblock(fh=%i, state=%i) = -1", fh, state); |
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| 31 | return -1; |
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| 32 | } |
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| 33 | |
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| 34 | flags |= O_NONBLOCK; |
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| 35 | |
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| 36 | if ( state == ROAR_SOCKET_BLOCK ) |
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| 37 | flags -= O_NONBLOCK; |
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| 38 | |
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| 39 | if ( fcntl(fh, F_SETFL, flags) == -1 ) { |
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| 40 | ROAR_ERR("roar_socket_nonblock(fh=%i, state=%i): Can not set flags: %s", fh, state, strerror(errno)); |
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| 41 | ROAR_DBG("roar_socket_nonblock(fh=%i, state=%i) = -1", fh, state); |
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| 42 | return -1; |
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| 43 | } |
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| 44 | |
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| 45 | ROAR_DBG("roar_socket_nonblock(fh=%i, state=%i) = 0", fh, state); |
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| 46 | return 0; |
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| 47 | } |
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| 48 | |
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| 49 | int roar_socket_listen (int type, char * host, int port) { |
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| 50 | return roar_socket_open(MODE_LISTEN, type, host, port); |
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| 51 | } |
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| 52 | |
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| 53 | int roar_socket_connect (char * host, int port) { |
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| 54 | return roar_socket_open(MODE_CONNECT, ROAR_SOCKET_TYPE_UNKNOWN, host, port); |
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| 55 | } |
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| 56 | |
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| 57 | int roar_socket_open (int mode, int type, char * host, int port) { |
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| 58 | // int type = ROAR_SOCKET_TYPE_INET; |
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| 59 | int fh; |
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| 60 | struct sockaddr_in socket_addr; |
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| 61 | struct hostent * he; |
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| 62 | //unsigned int host_div = 0; |
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| 63 | int (*mode_func)(int sockfd, const struct sockaddr *serv_addr, socklen_t addrlen) = connect; // default is to connect |
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| 64 | |
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| 65 | if ( mode == MODE_LISTEN ) |
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| 66 | mode_func = bind; |
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| 67 | |
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| 68 | if ( type == ROAR_SOCKET_TYPE_UNKNOWN ) { |
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| 69 | type = ROAR_SOCKET_TYPE_INET; |
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| 70 | if ( *host == '/' ) |
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| 71 | type = ROAR_SOCKET_TYPE_UNIX; |
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| 72 | } |
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| 73 | |
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| 74 | |
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| 75 | ROAR_DBG("roar_socket_open(*): type=%s, host='%s', port=%i", |
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| 76 | type == ROAR_SOCKET_TYPE_UNIX ? "UNIX" : "INET", host, port); |
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| 77 | |
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| 78 | memset(&socket_addr, 0, sizeof(socket_addr)); |
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| 79 | memset(&he, 0, sizeof(he)); |
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| 80 | |
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| 81 | |
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| 82 | if ( type == ROAR_SOCKET_TYPE_INET ) { |
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| 83 | |
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| 84 | if ( (he = gethostbyname(host)) == NULL ) { |
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| 85 | ROAR_ERR("roar_socket_open(*): Can\'t resolve host name '%s'", |
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| 86 | host); |
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| 87 | return -1; |
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| 88 | } |
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| 89 | |
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| 90 | memcpy((struct in_addr *)&socket_addr.sin_addr, he->h_addr, sizeof(struct in_addr)); |
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| 91 | |
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| 92 | /* set the connect information */ |
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| 93 | socket_addr.sin_family = AF_INET; |
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| 94 | socket_addr.sin_port = htons( port ); |
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| 95 | |
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| 96 | fh = roar_socket_new_tcp(); |
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| 97 | |
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| 98 | if ( mode_func(fh, (struct sockaddr *)&socket_addr, sizeof(struct sockaddr_in)) == -1 ) { |
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| 99 | ROAR_DBG("roar_socket_open(*): Can not connect/bind: %s", strerror(errno)); |
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| 100 | close(fh); |
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| 101 | return -1; |
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| 102 | } |
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| 103 | // hey! we have a socket... |
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| 104 | } else { |
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| 105 | fh = roar_socket_new_unix(); |
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| 106 | close(fh); |
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| 107 | return -1; |
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| 108 | } |
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| 109 | |
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| 110 | if ( mode == MODE_LISTEN ) |
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| 111 | if ( listen(fh, ROAR_SOCKET_QUEUE_LEN) == -1 ) { |
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| 112 | close(fh); |
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| 113 | return -1; |
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| 114 | } |
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| 115 | |
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| 116 | return fh; |
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| 117 | } |
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| 118 | |
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| 119 | //ll |
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