[311dfa6] | 1 | // DSWifi Project - sgIP Internet Protocol Stack Implementation |
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| 2 | // Copyright (C) 2005-2006 Stephen Stair - sgstair@akkit.org - http://www.akkit.org |
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[32b8506] | 3 | /****************************************************************************** |
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[311dfa6] | 4 | DSWifi Lib and test materials are licenced under the MIT open source licence: |
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| 5 | Copyright (c) 2005-2006 Stephen Stair |
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| 6 | |
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| 7 | Permission is hereby granted, free of charge, to any person obtaining a copy of |
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| 8 | this software and associated documentation files (the "Software"), to deal in |
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| 9 | the Software without restriction, including without limitation the rights to |
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| 10 | use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies |
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| 11 | of the Software, and to permit persons to whom the Software is furnished to do |
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| 12 | so, subject to the following conditions: |
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| 13 | |
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| 14 | The above copyright notice and this permission notice shall be included in all |
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| 15 | copies or substantial portions of the Software. |
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| 16 | |
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| 17 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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| 18 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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| 19 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
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| 20 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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| 21 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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| 22 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
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| 23 | SOFTWARE. |
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| 24 | ******************************************************************************/ |
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| 25 | |
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| 26 | #include "sgIP_sockets.h" |
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| 27 | #include "sgIP_TCP.h" |
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| 28 | #include "sgIP_UDP.h" |
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| 29 | #include "sgIP_ICMP.h" |
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| 30 | #include "sgIP_DNS.h" |
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| 31 | |
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| 32 | |
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| 33 | sgIP_socket_data socketlist[SGIP_SOCKET_MAXSOCKETS]; |
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| 34 | extern unsigned long sgIP_timems; |
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| 35 | |
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| 36 | |
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| 37 | void sgIP_sockets_Init() { |
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| 38 | int i; |
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| 39 | for(i=0;i<SGIP_SOCKET_MAXSOCKETS;i++) { |
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| 40 | socketlist[i].conn_ptr=0; |
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| 41 | socketlist[i].flags = 0; |
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| 42 | } |
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| 43 | } |
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| 44 | |
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| 45 | // spawn/kill socket for internal use ONLY. |
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| 46 | int spawn_socket(int flags) { |
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| 47 | int s; |
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| 48 | SGIP_INTR_PROTECT(); |
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| 49 | for(s=0;s<SGIP_SOCKET_MAXSOCKETS;s++) if(!(socketlist[s].flags&SGIP_SOCKET_FLAG_ACTIVE)) break; |
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| 50 | if(s==SGIP_SOCKET_MAXSOCKETS) { |
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| 51 | SGIP_INTR_UNPROTECT(); |
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| 52 | return SGIP_ERROR(ENOMEM); |
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| 53 | } |
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| 54 | socketlist[s].flags=SGIP_SOCKET_FLAG_ACTIVE | flags; |
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| 55 | socketlist[s].conn_ptr=0; |
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| 56 | SGIP_INTR_UNPROTECT(); |
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| 57 | return s+1; |
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| 58 | } |
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| 59 | int kill_socket(int s) { |
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| 60 | if(s<1 || s>SGIP_SOCKET_MAXSOCKETS) return SGIP_ERROR(EINVAL); |
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| 61 | SGIP_INTR_PROTECT(); |
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| 62 | s--; |
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| 63 | socketlist[s].conn_ptr=0; |
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| 64 | socketlist[s].flags=0; |
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| 65 | SGIP_INTR_UNPROTECT(); |
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| 66 | return 0; |
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| 67 | } |
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| 68 | |
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| 69 | int socket(int domain, int type, int protocol) { |
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| 70 | int s; |
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| 71 | if(domain!=AF_INET) return SGIP_ERROR(EINVAL); |
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| 72 | if(protocol!=0) return SGIP_ERROR(EINVAL); |
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| 73 | if(type!=SOCK_DGRAM && type!=SOCK_STREAM) return SGIP_ERROR(EINVAL); |
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| 74 | SGIP_INTR_PROTECT(); |
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| 75 | for(s=0;s<SGIP_SOCKET_MAXSOCKETS;s++) if(!(socketlist[s].flags&SGIP_SOCKET_FLAG_ACTIVE)) break; |
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| 76 | if(s==SGIP_SOCKET_MAXSOCKETS) { |
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| 77 | SGIP_INTR_UNPROTECT(); |
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| 78 | return SGIP_ERROR(ENOMEM); |
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| 79 | } |
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| 80 | if(type==SOCK_STREAM) { |
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| 81 | socketlist[s].flags=SGIP_SOCKET_FLAG_ACTIVE | SGIP_SOCKET_FLAG_TYPE_TCP; |
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| 82 | socketlist[s].conn_ptr=sgIP_TCP_AllocRecord(); |
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| 83 | } else if(type==SOCK_DGRAM) { |
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| 84 | socketlist[s].flags=SGIP_SOCKET_FLAG_ACTIVE | SGIP_SOCKET_FLAG_TYPE_UDP; |
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[32b8506] | 85 | socketlist[s].conn_ptr=sgIP_UDP_AllocRecord(); |
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[311dfa6] | 86 | } else { |
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| 87 | SGIP_INTR_UNPROTECT(); |
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| 88 | return SGIP_ERROR(EINVAL); |
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| 89 | } |
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| 90 | #ifdef SGIP_SOCKET_DEFAULT_NONBLOCK |
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| 91 | socketlist[s].flags|=SGIP_SOCKET_FLAG_NONBLOCKING; |
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| 92 | #endif |
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| 93 | SGIP_INTR_UNPROTECT(); |
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| 94 | return s+1; |
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| 95 | } |
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| 96 | |
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| 97 | |
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| 98 | int closesocket(int socket) { |
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| 99 | if(socket<1 || socket>SGIP_SOCKET_MAXSOCKETS) return SGIP_ERROR(EINVAL); |
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| 100 | SGIP_INTR_PROTECT(); |
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| 101 | socket--; |
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| 102 | if(!(socketlist[socket].flags&SGIP_SOCKET_FLAG_ACTIVE)) { SGIP_INTR_UNPROTECT(); return 0; } |
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| 103 | if((socketlist[socket].flags&SGIP_SOCKET_FLAG_TYPEMASK)==SGIP_SOCKET_FLAG_TYPE_TCP) { |
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| 104 | sgIP_TCP_FreeRecord((sgIP_Record_TCP *)socketlist[socket].conn_ptr); |
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| 105 | } else if((socketlist[socket].flags&SGIP_SOCKET_FLAG_TYPEMASK)==SGIP_SOCKET_FLAG_TYPE_UDP) { |
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| 106 | sgIP_UDP_FreeRecord((sgIP_Record_UDP *)socketlist[socket].conn_ptr); |
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| 107 | } |
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| 108 | socketlist[socket].conn_ptr=0; |
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| 109 | socketlist[socket].flags=0; |
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| 110 | SGIP_INTR_UNPROTECT(); |
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| 111 | return 0; |
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| 112 | } |
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| 113 | |
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| 114 | int bind(int socket, const struct sockaddr * addr, int addr_len) { |
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| 115 | if(socket<1 || socket>SGIP_SOCKET_MAXSOCKETS) return SGIP_ERROR(EINVAL); |
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| 116 | if(addr_len!=sizeof(struct sockaddr_in)) return SGIP_ERROR(EINVAL); |
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| 117 | SGIP_INTR_PROTECT(); |
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| 118 | int retval=SGIP_ERROR(EINVAL); |
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| 119 | socket--; |
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| 120 | if((socketlist[socket].flags&SGIP_SOCKET_FLAG_TYPEMASK)==SGIP_SOCKET_FLAG_TYPE_TCP) { |
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| 121 | retval=sgIP_TCP_Bind((sgIP_Record_TCP *)socketlist[socket].conn_ptr,((struct sockaddr_in *)addr)->sin_port,((struct sockaddr_in *)addr)->sin_addr.s_addr); |
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| 122 | } else if((socketlist[socket].flags&SGIP_SOCKET_FLAG_TYPEMASK)==SGIP_SOCKET_FLAG_TYPE_UDP) { |
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| 123 | retval=sgIP_UDP_Bind((sgIP_Record_UDP *)socketlist[socket].conn_ptr,((struct sockaddr_in *)addr)->sin_port,((struct sockaddr_in *)addr)->sin_addr.s_addr); |
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| 124 | } |
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| 125 | SGIP_INTR_UNPROTECT(); |
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| 126 | return retval; |
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| 127 | } |
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| 128 | int connect(int socket, const struct sockaddr * addr, int addr_len) { |
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| 129 | if(socket<1 || socket>SGIP_SOCKET_MAXSOCKETS) return SGIP_ERROR(EINVAL); |
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| 130 | if(addr_len!=sizeof(struct sockaddr_in)) return SGIP_ERROR(EINVAL); |
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| 131 | SGIP_INTR_PROTECT(); |
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| 132 | int i; |
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| 133 | int retval=SGIP_ERROR(EINVAL); |
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| 134 | socket--; |
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| 135 | if((socketlist[socket].flags&SGIP_SOCKET_FLAG_TYPEMASK)==SGIP_SOCKET_FLAG_TYPE_TCP) { |
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| 136 | retval=sgIP_TCP_Connect((sgIP_Record_TCP *)socketlist[socket].conn_ptr,((struct sockaddr_in *)addr)->sin_addr.s_addr,((struct sockaddr_in *)addr)->sin_port); |
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| 137 | if(retval==0) { |
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| 138 | do { |
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| 139 | i=((sgIP_Record_TCP *)socketlist[socket].conn_ptr)->tcpstate; |
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| 140 | if(i==SGIP_TCP_STATE_ESTABLISHED || i==SGIP_TCP_STATE_CLOSE_WAIT) {retval=0; break;} |
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[32b8506] | 141 | if(i==SGIP_TCP_STATE_CLOSED || i==SGIP_TCP_STATE_UNUSED || i==SGIP_TCP_STATE_LISTEN || i==SGIP_TCP_STATE_NODATA) |
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[311dfa6] | 142 | { retval=SGIP_ERROR(((sgIP_Record_TCP *)socketlist[socket].conn_ptr)->errorcode); break; } |
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| 143 | if(socketlist[socket].flags&SGIP_SOCKET_FLAG_NONBLOCKING) break; |
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| 144 | SGIP_INTR_UNPROTECT(); |
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| 145 | SGIP_WAITEVENT(); |
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| 146 | SGIP_INTR_REPROTECT(); |
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| 147 | } while(1); |
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| 148 | } |
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| 149 | } |
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| 150 | SGIP_INTR_UNPROTECT(); |
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| 151 | return retval; |
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| 152 | } |
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| 153 | int send(int socket, const void * data, int sendlength, int flags) { |
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| 154 | if(socket<1 || socket>SGIP_SOCKET_MAXSOCKETS) return -1; |
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| 155 | SGIP_INTR_PROTECT(); |
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| 156 | int retval=SGIP_ERROR(EINVAL); |
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| 157 | socket--; |
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| 158 | if((socketlist[socket].flags&SGIP_SOCKET_FLAG_TYPEMASK)==SGIP_SOCKET_FLAG_TYPE_TCP) { |
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| 159 | do { |
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| 160 | retval=sgIP_TCP_Send((sgIP_Record_TCP *)socketlist[socket].conn_ptr,data,sendlength,flags); |
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| 161 | if(retval!=-1) break; |
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| 162 | if(errno!=EWOULDBLOCK) break; |
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| 163 | if(socketlist[socket].flags&SGIP_SOCKET_FLAG_NONBLOCKING) break; |
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| 164 | SGIP_INTR_UNPROTECT(); |
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| 165 | SGIP_WAITEVENT(); |
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| 166 | SGIP_INTR_REPROTECT(); |
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| 167 | } while(1); |
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| 168 | } |
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| 169 | SGIP_INTR_UNPROTECT(); |
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| 170 | return retval; |
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| 171 | } |
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| 172 | int recv(int socket, void * data, int recvlength, int flags) { |
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| 173 | if(socket<1 || socket>SGIP_SOCKET_MAXSOCKETS) return -1; |
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| 174 | SGIP_INTR_PROTECT(); |
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| 175 | int retval=SGIP_ERROR(EINVAL); |
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| 176 | socket--; |
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| 177 | if((socketlist[socket].flags&SGIP_SOCKET_FLAG_TYPEMASK)==SGIP_SOCKET_FLAG_TYPE_TCP) { |
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| 178 | do { |
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| 179 | retval=sgIP_TCP_Recv((sgIP_Record_TCP *)socketlist[socket].conn_ptr,data,recvlength,flags); |
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| 180 | if(retval!=-1) break; |
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| 181 | if(errno!=EWOULDBLOCK) break; |
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| 182 | if(socketlist[socket].flags&SGIP_SOCKET_FLAG_NONBLOCKING) break; |
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| 183 | SGIP_INTR_UNPROTECT(); |
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| 184 | SGIP_WAITEVENT(); |
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| 185 | SGIP_INTR_REPROTECT(); |
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| 186 | } while(1); |
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| 187 | } |
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| 188 | SGIP_INTR_UNPROTECT(); |
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| 189 | return retval; |
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| 190 | } |
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| 191 | int sendto(int socket, const void * data, int sendlength, int flags, const struct sockaddr * addr, int addr_len) { |
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| 192 | if(socket<1 || socket>SGIP_SOCKET_MAXSOCKETS) return -1; |
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| 193 | if(!addr) return -1; |
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| 194 | SGIP_INTR_PROTECT(); |
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| 195 | int retval=SGIP_ERROR(EINVAL); |
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| 196 | socket--; |
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| 197 | if((socketlist[socket].flags&SGIP_SOCKET_FLAG_TYPEMASK)==SGIP_SOCKET_FLAG_TYPE_TCP) { |
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| 198 | } else if((socketlist[socket].flags&SGIP_SOCKET_FLAG_TYPEMASK)==SGIP_SOCKET_FLAG_TYPE_UDP) { |
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| 199 | retval=sgIP_UDP_SendTo((sgIP_Record_UDP *)socketlist[socket].conn_ptr,data,sendlength,flags,((struct sockaddr_in *)addr)->sin_addr.s_addr,((struct sockaddr_in *)addr)->sin_port); |
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| 200 | } |
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| 201 | SGIP_INTR_UNPROTECT(); |
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| 202 | return retval; |
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| 203 | } |
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| 204 | int recvfrom(int socket, void * data, int recvlength, int flags, struct sockaddr * addr, int * addr_len) { |
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| 205 | if(socket<1 || socket>SGIP_SOCKET_MAXSOCKETS) return -1; |
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| 206 | if(!addr) return -1; |
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| 207 | SGIP_INTR_PROTECT(); |
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| 208 | int retval=SGIP_ERROR(EINVAL); |
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| 209 | socket--; |
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| 210 | if((socketlist[socket].flags&SGIP_SOCKET_FLAG_TYPEMASK)==SGIP_SOCKET_FLAG_TYPE_TCP) { |
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| 211 | } else if((socketlist[socket].flags&SGIP_SOCKET_FLAG_TYPEMASK)==SGIP_SOCKET_FLAG_TYPE_UDP) { |
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| 212 | do { |
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| 213 | retval=sgIP_UDP_RecvFrom((sgIP_Record_UDP *)socketlist[socket].conn_ptr,data,recvlength,flags,&(((struct sockaddr_in *)addr)->sin_addr.s_addr),&(((struct sockaddr_in *)addr)->sin_port)); |
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| 214 | if(retval!=-1) break; |
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| 215 | if(errno!=EWOULDBLOCK) break; |
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| 216 | if(socketlist[socket].flags&SGIP_SOCKET_FLAG_NONBLOCKING) break; |
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| 217 | SGIP_INTR_UNPROTECT(); // give interrupts a chance to occur. |
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| 218 | SGIP_WAITEVENT(); // don't just try again immediately |
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| 219 | SGIP_INTR_REPROTECT(); |
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| 220 | } while(1); |
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| 221 | *addr_len = sizeof(struct sockaddr_in); |
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| 222 | } |
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| 223 | SGIP_INTR_UNPROTECT(); |
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| 224 | return retval; |
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| 225 | } |
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| 226 | int listen(int socket, int max_connections) { |
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| 227 | if(socket<1 || socket>SGIP_SOCKET_MAXSOCKETS) return SGIP_ERROR(EINVAL); |
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| 228 | SGIP_INTR_PROTECT(); |
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| 229 | int retval=SGIP_ERROR(EINVAL); |
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| 230 | socket--; |
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| 231 | if((socketlist[socket].flags&SGIP_SOCKET_FLAG_TYPEMASK)==SGIP_SOCKET_FLAG_TYPE_TCP) { |
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| 232 | retval=sgIP_TCP_Listen((sgIP_Record_TCP *)socketlist[socket].conn_ptr,max_connections); |
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| 233 | } |
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| 234 | SGIP_INTR_UNPROTECT(); |
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| 235 | return retval; |
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| 236 | } |
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| 237 | int accept(int socket, struct sockaddr * addr, int * addr_len) { |
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| 238 | if(socket<1 || socket>SGIP_SOCKET_MAXSOCKETS || !addr || !addr_len) return SGIP_ERROR(EINVAL); |
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| 239 | SGIP_INTR_PROTECT(); |
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| 240 | sgIP_Record_TCP * ret; |
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| 241 | int retval,s; |
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| 242 | retval=SGIP_ERROR0(EINVAL); |
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| 243 | ret=0; |
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| 244 | socket--; |
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| 245 | if((socketlist[socket].flags&SGIP_SOCKET_FLAG_TYPEMASK)==SGIP_SOCKET_FLAG_TYPE_TCP) { |
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| 246 | s=spawn_socket((socketlist[socket].flags&SGIP_SOCKET_FLAG_NONBLOCKING) | SGIP_SOCKET_FLAG_TYPE_TCP); |
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| 247 | if(s>0) { |
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| 248 | do { |
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| 249 | ret=sgIP_TCP_Accept((sgIP_Record_TCP *)socketlist[socket].conn_ptr); |
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| 250 | if(ret!=0) break; |
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| 251 | if(errno!=EWOULDBLOCK) break; |
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| 252 | if(socketlist[socket].flags&SGIP_SOCKET_FLAG_NONBLOCKING) break; |
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| 253 | SGIP_INTR_UNPROTECT(); // give interrupts a chance to occur. |
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| 254 | SGIP_WAITEVENT(); // don't just try again immediately |
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| 255 | SGIP_INTR_REPROTECT(); |
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| 256 | } while(1); |
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| 257 | } |
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| 258 | if(ret==0) { |
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| 259 | kill_socket(s); |
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| 260 | retval=-1; |
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| 261 | } else { |
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| 262 | *addr_len=sizeof(struct sockaddr_in); |
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| 263 | ((struct sockaddr_in *)addr)->sin_family=AF_INET; |
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| 264 | ((struct sockaddr_in *)addr)->sin_port=ret->destport; |
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| 265 | ((struct sockaddr_in *)addr)->sin_addr.s_addr=ret->destip; |
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| 266 | socketlist[s-1].conn_ptr=ret; |
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| 267 | retval=s; |
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| 268 | } |
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| 269 | } |
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| 270 | SGIP_INTR_UNPROTECT(); |
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| 271 | return retval; |
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| 272 | } |
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| 273 | int shutdown(int socket, int shutdown_type) { |
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| 274 | if(socket<1 || socket>SGIP_SOCKET_MAXSOCKETS) return SGIP_ERROR(EINVAL); |
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| 275 | SGIP_INTR_PROTECT(); |
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| 276 | int retval=SGIP_ERROR(EINVAL); |
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| 277 | socket--; |
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| 278 | if((socketlist[socket].flags&SGIP_SOCKET_FLAG_TYPEMASK)==SGIP_SOCKET_FLAG_TYPE_TCP) { |
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| 279 | retval=sgIP_TCP_Close((sgIP_Record_TCP *)socketlist[socket].conn_ptr); |
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| 280 | } |
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| 281 | SGIP_INTR_UNPROTECT(); |
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| 282 | return retval; |
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| 283 | } |
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| 284 | |
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| 285 | int ioctl(int socket, long cmd, void * arg) { |
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| 286 | if(socket<1 || socket>SGIP_SOCKET_MAXSOCKETS) return SGIP_ERROR(EBADF); |
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| 287 | socket--; |
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| 288 | int retval,i; |
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| 289 | retval=0; |
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| 290 | SGIP_INTR_PROTECT(); |
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| 291 | switch(cmd) { |
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| 292 | case FIONBIO: |
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| 293 | if(!arg){ |
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| 294 | retval=SGIP_ERROR(EINVAL); |
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| 295 | } else { |
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| 296 | socketlist[socket].flags &= ~SGIP_SOCKET_FLAG_NONBLOCKING; |
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| 297 | if(*((unsigned long *)arg)) socketlist[socket].flags |= SGIP_SOCKET_FLAG_NONBLOCKING; |
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| 298 | } |
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| 299 | break; |
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| 300 | case FIONREAD: |
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| 301 | if(!arg) { |
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| 302 | retval=SGIP_ERROR(EINVAL); |
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| 303 | } else { |
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| 304 | if((socketlist[socket].flags&SGIP_SOCKET_FLAG_TYPEMASK)==SGIP_SOCKET_FLAG_TYPE_TCP) { |
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| 305 | i=((sgIP_Record_TCP *)socketlist[socket].conn_ptr)->buf_rx_out-((sgIP_Record_TCP *)socketlist[socket].conn_ptr)->buf_rx_in; |
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| 306 | if(i<0) i+=SGIP_TCP_RECEIVEBUFFERLENGTH; |
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| 307 | *((int *)arg)=i; |
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| 308 | } else { |
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| 309 | retval=SGIP_ERROR(EINVAL); |
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| 310 | } |
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| 311 | } |
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| 312 | } |
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| 313 | SGIP_INTR_UNPROTECT(); |
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| 314 | return retval; |
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| 315 | } |
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| 316 | |
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| 317 | int setsockopt(int socket, int level, int option_name, const void * data, int data_len) { |
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| 318 | return 0; |
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[32b8506] | 319 | } |
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[311dfa6] | 320 | int getsockopt(int socket, int level, int option_name, void * data, int * data_len) { |
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| 321 | return 0; |
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| 322 | } |
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| 323 | |
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| 324 | int getpeername(int socket, struct sockaddr *addr, int * addr_len) { |
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| 325 | if(socket<1 || socket>SGIP_SOCKET_MAXSOCKETS) return SGIP_ERROR(EBADF); |
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| 326 | if(!addr || !addr_len) return SGIP_ERROR(EFAULT); |
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| 327 | if(*addr_len<sizeof(struct sockaddr_in)) return SGIP_ERROR(EFAULT); |
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| 328 | socket--; |
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| 329 | SGIP_INTR_PROTECT(); |
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| 330 | if((socketlist[socket].flags&SGIP_SOCKET_FLAG_TYPEMASK)==SGIP_SOCKET_FLAG_TYPE_TCP) { |
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| 331 | { |
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| 332 | struct sockaddr_in * sain = (struct sockaddr_in *)addr; |
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| 333 | sgIP_Record_TCP * rec = (sgIP_Record_TCP *)socketlist[socket].conn_ptr; |
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| 334 | if(rec->tcpstate!=SGIP_TCP_STATE_ESTABLISHED) { |
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| 335 | SGIP_INTR_UNPROTECT(); |
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| 336 | return SGIP_ERROR(ENOTCONN); |
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| 337 | } else { |
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| 338 | sain->sin_addr.s_addr=rec->destip; |
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| 339 | sain->sin_family=AF_INET; |
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| 340 | sain->sin_port=rec->destport; |
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| 341 | *addr_len=sizeof(struct sockaddr_in); |
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| 342 | } |
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| 343 | } |
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| 344 | } else { |
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| 345 | SGIP_INTR_UNPROTECT(); |
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| 346 | return SGIP_ERROR(EOPNOTSUPP); |
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| 347 | } |
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| 348 | SGIP_INTR_UNPROTECT(); |
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| 349 | return 0; |
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| 350 | } |
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| 351 | int getsockname(int socket, struct sockaddr *addr, int * addr_len) { |
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| 352 | if(socket<1 || socket>SGIP_SOCKET_MAXSOCKETS) return SGIP_ERROR(EBADF); |
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| 353 | if(!addr || !addr_len) return SGIP_ERROR(EFAULT); |
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| 354 | if(*addr_len<sizeof(struct sockaddr_in)) return SGIP_ERROR(EFAULT); |
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| 355 | socket--; |
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| 356 | SGIP_INTR_PROTECT(); |
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| 357 | if((socketlist[socket].flags&SGIP_SOCKET_FLAG_TYPEMASK)==SGIP_SOCKET_FLAG_TYPE_TCP) { |
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| 358 | { |
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| 359 | struct sockaddr_in * sain = (struct sockaddr_in *)addr; |
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| 360 | sgIP_Record_TCP * rec = (sgIP_Record_TCP *)socketlist[socket].conn_ptr; |
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| 361 | if(rec->tcpstate==SGIP_TCP_STATE_UNUSED || rec->tcpstate==SGIP_TCP_STATE_CLOSED) { |
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| 362 | SGIP_INTR_UNPROTECT(); |
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| 363 | return SGIP_ERROR(EINVAL); |
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| 364 | } else { |
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| 365 | sain->sin_addr.s_addr=rec->srcip; |
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| 366 | sain->sin_family=AF_INET; |
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| 367 | sain->sin_port=rec->srcport; |
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| 368 | *addr_len=sizeof(struct sockaddr_in); |
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| 369 | } |
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| 370 | } |
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| 371 | } else if((socketlist[socket].flags&SGIP_SOCKET_FLAG_TYPEMASK)==SGIP_SOCKET_FLAG_TYPE_UDP) { |
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| 372 | { |
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| 373 | struct sockaddr_in * sain = (struct sockaddr_in *)addr; |
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| 374 | sgIP_Record_UDP * rec = (sgIP_Record_UDP *)socketlist[socket].conn_ptr; |
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| 375 | if(rec->state==SGIP_UDP_STATE_UNUSED) { |
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| 376 | SGIP_INTR_UNPROTECT(); |
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| 377 | return SGIP_ERROR(EINVAL); |
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| 378 | } else { |
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| 379 | sain->sin_addr.s_addr=rec->srcip; |
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| 380 | sain->sin_family=AF_INET; |
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| 381 | sain->sin_port=rec->srcport; |
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| 382 | *addr_len=sizeof(struct sockaddr_in); |
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| 383 | } |
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| 384 | } |
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| 385 | } else { |
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| 386 | SGIP_INTR_UNPROTECT(); |
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| 387 | return SGIP_ERROR(EOPNOTSUPP); |
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| 388 | } |
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| 389 | SGIP_INTR_UNPROTECT(); |
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| 390 | return 0; |
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| 391 | } |
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| 392 | |
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| 393 | |
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| 394 | struct hostent * gethostbyname(const char * name) { |
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| 395 | return (struct hostent *)sgIP_DNS_gethostbyname(name); |
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| 396 | }; |
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| 397 | |
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| 398 | |
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[14876018] | 399 | extern int select(int nfds, fd_set *__restrict readfds, fd_set *__restrict writefds, |
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| 400 | fd_set *__restrict errorfds, struct timeval *__restrict timeout) { |
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[311dfa6] | 401 | // 31 days = 2678400 seconds |
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| 402 | unsigned long timeout_ms, lasttime, temp; |
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| 403 | sgIP_Record_TCP * rec; |
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| 404 | sgIP_Record_UDP * urec; |
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| 405 | lasttime=sgIP_timems; |
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| 406 | if(!timeout) timeout_ms=2678400000UL; |
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| 407 | else { |
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| 408 | if(timeout->tv_sec>=2678400) { |
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| 409 | timeout_ms=2678400000UL; |
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| 410 | } else { |
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| 411 | timeout_ms=timeout->tv_sec*1000 + (timeout->tv_usec/1000); |
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| 412 | } |
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| 413 | } |
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| 414 | SGIP_INTR_PROTECT(); |
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| 415 | nfds=SGIP_SOCKET_MAXSOCKETS; |
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| 416 | |
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| 417 | int i,j,retval; |
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| 418 | while(timeout_ms>0) { // check all fd sets |
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| 419 | // readfds |
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| 420 | if(readfds) { |
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| 421 | for(i=0;i<nfds;i++) { |
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| 422 | if(FD_ISSET(i+1,readfds)) { |
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| 423 | if((socketlist[i].flags&SGIP_SOCKET_FLAG_TYPEMASK)==SGIP_SOCKET_FLAG_TYPE_TCP) { |
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| 424 | rec = (sgIP_Record_TCP *)socketlist[i].conn_ptr; |
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| 425 | if(rec->buf_rx_in!=rec->buf_rx_out) { timeout_ms=0; break; } |
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| 426 | } else if((socketlist[i].flags&SGIP_SOCKET_FLAG_TYPEMASK)==SGIP_SOCKET_FLAG_TYPE_UDP) { |
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| 427 | urec = (sgIP_Record_UDP *)socketlist[i].conn_ptr; |
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| 428 | if(urec->incoming_queue) { timeout_ms=0; break; } |
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| 429 | } |
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| 430 | } |
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| 431 | } |
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| 432 | if(timeout_ms==0) break; |
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| 433 | } |
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| 434 | if(writefds) { |
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| 435 | // writefds |
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| 436 | for(i=0;i<nfds;i++) { |
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| 437 | if(FD_ISSET(i+1,writefds)) { |
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| 438 | if((socketlist[i].flags&SGIP_SOCKET_FLAG_TYPEMASK)==SGIP_SOCKET_FLAG_TYPE_TCP) { |
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| 439 | rec = (sgIP_Record_TCP *)socketlist[i].conn_ptr; |
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| 440 | j=rec->buf_tx_in-1; |
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| 441 | if(j<0) j=SGIP_TCP_TRANSMITBUFFERLENGTH-1; |
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| 442 | if(rec->buf_tx_in!=j) { timeout_ms=0; break; } |
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| 443 | } |
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| 444 | } |
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| 445 | } |
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| 446 | if(timeout_ms==0) break; |
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| 447 | } |
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| 448 | // errorfds |
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| 449 | // ignore errorfds for now. |
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| 450 | |
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| 451 | temp=sgIP_timems-lasttime; |
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| 452 | if(timeout_ms<temp) timeout_ms=0; else timeout_ms -= temp; |
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| 453 | lasttime+=temp; |
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| 454 | SGIP_INTR_UNPROTECT(); // give interrupts a chance to occur. |
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| 455 | SGIP_WAITEVENT(); // don't just try again immediately |
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| 456 | SGIP_INTR_REPROTECT(); |
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| 457 | } |
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| 458 | // markup fd sets and return |
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| 459 | // readfds |
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| 460 | retval=0; |
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| 461 | if(readfds) { |
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| 462 | for(i=0;i<nfds;i++) { |
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| 463 | if(FD_ISSET(i+1,readfds)) { |
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| 464 | if((socketlist[i].flags&SGIP_SOCKET_FLAG_TYPEMASK)==SGIP_SOCKET_FLAG_TYPE_TCP) { |
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| 465 | rec = (sgIP_Record_TCP *)socketlist[i].conn_ptr; |
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| 466 | if(rec->buf_rx_in==rec->buf_rx_out) { FD_CLR(i+1,readfds);} else retval++; |
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| 467 | } else if((socketlist[i].flags&SGIP_SOCKET_FLAG_TYPEMASK)==SGIP_SOCKET_FLAG_TYPE_UDP) { |
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| 468 | urec = (sgIP_Record_UDP *)socketlist[i].conn_ptr; |
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| 469 | if(!urec->incoming_queue) { FD_CLR(i+1,readfds);} else retval++; |
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| 470 | } |
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| 471 | } |
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| 472 | } |
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| 473 | } |
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| 474 | |
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| 475 | // writefds |
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| 476 | if(writefds) { |
---|
| 477 | for(i=0;i<nfds;i++) { |
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| 478 | if(FD_ISSET(i+1,writefds)) { |
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| 479 | if((socketlist[i].flags&SGIP_SOCKET_FLAG_TYPEMASK)==SGIP_SOCKET_FLAG_TYPE_TCP) { |
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| 480 | rec = (sgIP_Record_TCP *)socketlist[i].conn_ptr; |
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| 481 | j=rec->buf_tx_in-1; |
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| 482 | if(j<0) j=SGIP_TCP_TRANSMITBUFFERLENGTH-1; |
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| 483 | if(rec->buf_tx_in==j) { FD_CLR(i+1,writefds); } else retval++; |
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| 484 | } |
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| 485 | } |
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| 486 | } |
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| 487 | } |
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| 488 | |
---|
| 489 | if(errorfds) { FD_ZERO(errorfds); } |
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| 490 | |
---|
| 491 | SGIP_INTR_UNPROTECT(); |
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| 492 | return retval; |
---|
| 493 | } |
---|
| 494 | |
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| 495 | |
---|
| 496 | /* |
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| 497 | extern void FD_CLR(int fd, fd_set * fdset) { |
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| 498 | if(fd<1 || fd>FD_SETSIZE || !fdset) return; |
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| 499 | fd--; |
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| 500 | fdset->fdbits[fd>>5] &= ~(1<<(fd&31)); |
---|
| 501 | } |
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| 502 | extern int FD_ISSET(int fd, fd_set * fdset) { |
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| 503 | if(fd<1 || fd>FD_SETSIZE || !fdset) return 0; |
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| 504 | fd--; |
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| 505 | return (fdset->fdbits[fd>>5] & 1<<(fd&31))?1:0; |
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| 506 | } |
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| 507 | extern void FD_SET(int fd, fd_set * fdset) { |
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| 508 | if(fd<1 || fd>FD_SETSIZE || !fdset) return; |
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| 509 | fd--; |
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| 510 | fdset->fdbits[fd>>5] |= 1<<(fd&31); |
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| 511 | } |
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| 512 | extern void FD_ZERO(fd_set * fdset) { |
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| 513 | int i; |
---|
| 514 | if(!fdset) return; |
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| 515 | for(i=0;i<(FD_SETSIZE+31)/32;i++) { |
---|
| 516 | fdset->fdbits[i]=0; |
---|
| 517 | } |
---|
| 518 | } |
---|
| 519 | */ |
---|
| 520 | |
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| 521 | |
---|