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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