Commit a67b1c99d367cb55c374a699626a2ebcc3dd8319
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8d885e30
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Iniciando substituição das chamadas a gethostbyname
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1 | +/* | |
2 | + * "Software pw3270, desenvolvido com base nos códigos fontes do WC3270 e X3270 | |
3 | + * (Paul Mattes Paul.Mattes@usa.net), de emulação de terminal 3270 para acesso a | |
4 | + * aplicativos mainframe. Registro no INPI sob o nome G3270. | |
5 | + * | |
6 | + * Copyright (C) <2008> <Banco do Brasil S.A.> | |
7 | + * | |
8 | + * Este programa é software livre. Você pode redistribuí-lo e/ou modificá-lo sob | |
9 | + * os termos da GPL v.2 - Licença Pública Geral GNU, conforme publicado pela | |
10 | + * Free Software Foundation. | |
11 | + * | |
12 | + * Este programa é distribuído na expectativa de ser útil, mas SEM QUALQUER | |
13 | + * GARANTIA; sem mesmo a garantia implícita de COMERCIALIZAÇÃO ou de ADEQUAÇÃO | |
14 | + * A QUALQUER PROPÓSITO EM PARTICULAR. Consulte a Licença Pública Geral GNU para | |
15 | + * obter mais detalhes. | |
16 | + * | |
17 | + * Você deve ter recebido uma cópia da Licença Pública Geral GNU junto com este | |
18 | + * programa; se não, escreva para a Free Software Foundation, Inc., 51 Franklin | |
19 | + * St, Fifth Floor, Boston, MA 02110-1301 USA | |
20 | + * | |
21 | + * Este programa está nomeado como connect.c e possui - linhas de código. | |
22 | + * | |
23 | + * Contatos: | |
24 | + * | |
25 | + * perry.werneck@gmail.com (Alexandre Perry de Souza Werneck) | |
26 | + * erico.mendonca@gmail.com (Erico Mascarenhas Mendonça) | |
27 | + * | |
28 | + */ | |
29 | + | |
30 | +/*---[ Implement ]-------------------------------------------------------------------------------*/ | |
31 | + | |
32 | + LIB3270_EXPORT int lib3270_sock_connect(H3270 *hSession, const char *hostname, const char *srvc, int timeout) | |
33 | + { | |
34 | + int s; | |
35 | + int sock = -1; | |
36 | + struct addrinfo hints; | |
37 | + struct addrinfo * result = NULL; | |
38 | + struct addrinfo * rp = NULL; | |
39 | + LIB3270_MESSAGE saved_status = hSession->oia_status; | |
40 | + | |
41 | + memset(&hints, 0, sizeof(struct addrinfo)); | |
42 | + hints.ai_family = AF_UNSPEC; /* Allow IPv4 or IPv6 */ | |
43 | + hints.ai_socktype = SOCK_STREAM; /* Stream socket */ | |
44 | + hints.ai_flags = AI_PASSIVE; /* For wildcard IP address */ | |
45 | + hints.ai_protocol = 0; /* Any protocol */ | |
46 | + hints.ai_canonname = NULL; | |
47 | + hints.ai_addr = NULL; | |
48 | + hints.ai_next = NULL; | |
49 | + | |
50 | + if(timeout < 0) | |
51 | + timeout = 10; | |
52 | + | |
53 | + if(*hostname == '$') | |
54 | + { | |
55 | + const char *name = getenv(hostname+1); | |
56 | + if(!name) | |
57 | + { | |
58 | + lib3270_popup_dialog( hSession, | |
59 | + LIB3270_NOTIFY_ERROR, | |
60 | + _( "Connection error" ), | |
61 | + _( "Unable to find selected hostname." ), | |
62 | + _( "Can't determine value for environment variable \"%s\" " ), | |
63 | + hostname); | |
64 | + return -1; | |
65 | + } | |
66 | + hostname = name; | |
67 | + } | |
68 | + | |
69 | + status_changed(hSession,LIB3270_STATUS_RESOLVING); | |
70 | + | |
71 | + s = getaddrinfo(hostname, srvc, &hints, &result); | |
72 | + | |
73 | + if(s != 0) | |
74 | + { | |
75 | + lib3270_popup_dialog( hSession, | |
76 | + LIB3270_NOTIFY_ERROR, | |
77 | + _( "Connection error" ), | |
78 | + _( "Can't resolve hostname." ), | |
79 | + "%s", | |
80 | + gai_strerror(s)); | |
81 | + | |
82 | + status_changed(hSession,saved_status); | |
83 | + | |
84 | + return -1; | |
85 | + } | |
86 | + | |
87 | + status_changed(hSession,LIB3270_STATUS_CONNECTING); | |
88 | + | |
89 | + for(rp = result; sock < 0 && rp != NULL; rp = rp->ai_next) | |
90 | + { | |
91 | + sock = socket(rp->ai_family, rp->ai_socktype, rp->ai_protocol); | |
92 | + if(sock < 0) | |
93 | + continue; | |
94 | + | |
95 | +#ifdef WIN32 | |
96 | + u_long block; | |
97 | + u_int len = sizeof(int); | |
98 | + | |
99 | + WSASetLastError(0); | |
100 | + block = 1; | |
101 | + | |
102 | + if(ioctlsocket(sock,FIONBIO,&block)) | |
103 | + { | |
104 | + lib3270_popup_dialog( hSession, | |
105 | + LIB3270_NOTIFY_ERROR, | |
106 | + _( "Connection error" ), | |
107 | + _( "ioctlsocket(FIONBIO) failed." ), | |
108 | + "Windows error %d", | |
109 | + WSAGetLastError() ); | |
110 | + close(sock); | |
111 | + sock = -1; | |
112 | + } | |
113 | + else if(connect(sock, rp->ai_addr, rp->ai_addrlen)) | |
114 | + { | |
115 | + int err = WSAGetLastError(); | |
116 | + if(err != WSAEWOULDBLOCK) | |
117 | + { | |
118 | + lib3270_popup_dialog( hSession, | |
119 | + LIB3270_NOTIFY_ERROR, | |
120 | + _( "Connection error" ), | |
121 | + _( "Can't connect to host." ), | |
122 | + "Windows error %d", | |
123 | + WSAGetLastError() ); | |
124 | + close(sock); | |
125 | + sock = -1; | |
126 | + } | |
127 | + } | |
128 | + | |
129 | + if(sock > 0) | |
130 | + { | |
131 | + // Connection in progress, wait until socket is available for write | |
132 | + fd_set wr; | |
133 | + struct timeval tm; | |
134 | + int status; | |
135 | + int err; | |
136 | + socklen_t len = sizeof(err); | |
137 | + | |
138 | + FD_ZERO(&wr); | |
139 | + FD_SET(sock, &wr); | |
140 | + memset(&tm,0,sizeof(tm)); | |
141 | + tm.tv_sec = timeout; | |
142 | + | |
143 | + switch(select(sock+1, NULL, &wr, NULL, &tm)) | |
144 | + { | |
145 | + case 0: | |
146 | + lib3270_popup_dialog( hSession, | |
147 | + LIB3270_NOTIFY_ERROR, | |
148 | + _( "Connection error" ), | |
149 | + _( "Can't connect to host." ), | |
150 | + "%s", | |
151 | + strerror(errno = ETIMEDOUT)); | |
152 | + close(sock); | |
153 | + sock = -1; | |
154 | + break; | |
155 | + | |
156 | + case -1: | |
157 | + lib3270_popup_dialog( hSession, | |
158 | + LIB3270_NOTIFY_ERROR, | |
159 | + _( "Connection error" ), | |
160 | + _( "select() error when connecting to host." ), | |
161 | + "%s", | |
162 | + strerror(errno)); | |
163 | + close(sock); | |
164 | + sock = -1; | |
165 | + break; | |
166 | + | |
167 | + default: | |
168 | + // Se o socket nao esta disponivel para gravacao o connect falhou | |
169 | + if(!FD_ISSET(sock,&wr)) | |
170 | + { | |
171 | + lib3270_popup_dialog( hSession, | |
172 | + LIB3270_NOTIFY_ERROR, | |
173 | + _( "Connection error" ), | |
174 | + _( "Error when connecting to host." ), | |
175 | + "%s", | |
176 | + _( "Socket was not available after connect" )); | |
177 | + close(sock); | |
178 | + sock = -1; | |
179 | + } | |
180 | + else if(getsockopt(sock, SOL_SOCKET, SO_ERROR, (void *) &err, &len) < 0) | |
181 | + { | |
182 | + lib3270_popup_dialog( hSession, | |
183 | + LIB3270_NOTIFY_ERROR, | |
184 | + _( "Connection error" ), | |
185 | + _( "Error getting connection state." ), | |
186 | + "%s", | |
187 | + strerror(errno)); | |
188 | + | |
189 | + close(sock); | |
190 | + sock = -1; | |
191 | + } | |
192 | + else if(err) | |
193 | + { | |
194 | + lib3270_popup_dialog( hSession, | |
195 | + LIB3270_NOTIFY_ERROR, | |
196 | + _( "Connection error" ), | |
197 | + _( "socket error when connecting to host." ), | |
198 | + "Socket error %d", | |
199 | + err); | |
200 | + | |
201 | + close(sock); | |
202 | + sock = -1; | |
203 | + } | |
204 | + } | |
205 | + } | |
206 | + | |
207 | +#else | |
208 | + fcntl(sock, F_SETFL,fcntl(sock,F_GETFL,0)|O_NONBLOCK); | |
209 | + | |
210 | + errno = 0; | |
211 | + if(connect(sock, rp->ai_addr, rp->ai_addrlen)) | |
212 | + { | |
213 | + if( errno != EINPROGRESS ) | |
214 | + { | |
215 | + lib3270_popup_dialog( hSession, | |
216 | + LIB3270_NOTIFY_ERROR, | |
217 | + _( "Connection error" ), | |
218 | + _( "Can't connect to host." ), | |
219 | + "%s", | |
220 | + strerror(errno)); | |
221 | + close(sock); | |
222 | + sock = -1; | |
223 | + } | |
224 | + } | |
225 | + | |
226 | + if(sock > 0) | |
227 | + { | |
228 | + // Connection in progress, wait until socket is available for write | |
229 | + fd_set wr; | |
230 | + struct timeval tm; | |
231 | + int status; | |
232 | + int err; | |
233 | + socklen_t len = sizeof(err); | |
234 | + | |
235 | + FD_ZERO(&wr); | |
236 | + FD_SET(sock, &wr); | |
237 | + memset(&tm,0,sizeof(tm)); | |
238 | + tm.tv_sec = timeout; | |
239 | + | |
240 | + switch(select(sock+1, NULL, &wr, NULL, &tm)) | |
241 | + { | |
242 | + case 0: | |
243 | + lib3270_popup_dialog( hSession, | |
244 | + LIB3270_NOTIFY_ERROR, | |
245 | + _( "Connection error" ), | |
246 | + _( "Can't connect to host." ), | |
247 | + "%s", | |
248 | + strerror(errno = ETIMEDOUT)); | |
249 | + close(sock); | |
250 | + sock = -1; | |
251 | + break; | |
252 | + | |
253 | + case -1: | |
254 | + lib3270_popup_dialog( hSession, | |
255 | + LIB3270_NOTIFY_ERROR, | |
256 | + _( "Connection error" ), | |
257 | + _( "select() error when connecting to host." ), | |
258 | + "%s", | |
259 | + strerror(errno)); | |
260 | + close(sock); | |
261 | + sock = -1; | |
262 | + break; | |
263 | + | |
264 | + default: | |
265 | + | |
266 | + // Se o socket nao esta disponivel para gravacao o connect falhou | |
267 | + if(!FD_ISSET(sock,&wr)) | |
268 | + { | |
269 | + lib3270_popup_dialog( hSession, | |
270 | + LIB3270_NOTIFY_ERROR, | |
271 | + _( "Connection error" ), | |
272 | + _( "Error when connecting to host." ), | |
273 | + "%s", | |
274 | + _( "Socket was not available after connect" )); | |
275 | + close(sock); | |
276 | + sock = -1; | |
277 | + } | |
278 | + else if(getsockopt(sock, SOL_SOCKET, SO_ERROR, &err, &len) < 0) | |
279 | + { | |
280 | + lib3270_popup_dialog( hSession, | |
281 | + LIB3270_NOTIFY_ERROR, | |
282 | + _( "Connection error" ), | |
283 | + _( "Error getting connection state." ), | |
284 | + "%s", | |
285 | + strerror(errno)); | |
286 | + | |
287 | + close(sock); | |
288 | + sock = -1; | |
289 | + } | |
290 | + else if(err) | |
291 | + { | |
292 | + lib3270_popup_dialog( hSession, | |
293 | + LIB3270_NOTIFY_ERROR, | |
294 | + _( "Connection error" ), | |
295 | + _( "socket error when connecting to host." ), | |
296 | + "Socket error %d", | |
297 | + err); | |
298 | + | |
299 | + close(sock); | |
300 | + sock = -1; | |
301 | + } | |
302 | + } | |
303 | + } | |
304 | +#endif // WIN32 | |
305 | + } | |
306 | + | |
307 | + freeaddrinfo(result); | |
308 | + | |
309 | + status_changed(hSession,saved_status); | |
310 | + | |
311 | + return sock; | |
312 | + | |
313 | + } | |
314 | + | ... | ... |