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-rw-r--r--src/usocket.c98
1 files changed, 49 insertions, 49 deletions
diff --git a/src/usocket.c b/src/usocket.c
index 89f774d..99e551b 100644
--- a/src/usocket.c
+++ b/src/usocket.c
@@ -4,12 +4,13 @@
4* 4*
5* The code is now interrupt-safe. 5* The code is now interrupt-safe.
6* The penalty of calling select to avoid busy-wait is only paid when 6* The penalty of calling select to avoid busy-wait is only paid when
7* the I/O call fail in the first place. 7* the I/O call fail in the first place.
8\*=========================================================================*/ 8\*=========================================================================*/
9#include <string.h> 9#include <string.h>
10#include <signal.h> 10#include <signal.h>
11 11
12#include "socket.h" 12#include "socket.h"
13#include "pierror.h"
13 14
14/*-------------------------------------------------------------------------*\ 15/*-------------------------------------------------------------------------*\
15* Wait for readable/writable/connected socket with timeout 16* Wait for readable/writable/connected socket with timeout
@@ -72,7 +73,7 @@ int socket_waitfd(p_socket ps, int sw, p_timeout tm) {
72 73
73 74
74/*-------------------------------------------------------------------------*\ 75/*-------------------------------------------------------------------------*\
75* Initializes module 76* Initializes module
76\*-------------------------------------------------------------------------*/ 77\*-------------------------------------------------------------------------*/
77int socket_open(void) { 78int socket_open(void) {
78 /* instals a handler to ignore sigpipe or it will crash us */ 79 /* instals a handler to ignore sigpipe or it will crash us */
@@ -81,7 +82,7 @@ int socket_open(void) {
81} 82}
82 83
83/*-------------------------------------------------------------------------*\ 84/*-------------------------------------------------------------------------*\
84* Close module 85* Close module
85\*-------------------------------------------------------------------------*/ 86\*-------------------------------------------------------------------------*/
86int socket_close(void) { 87int socket_close(void) {
87 return 1; 88 return 1;
@@ -100,7 +101,7 @@ void socket_destroy(p_socket ps) {
100/*-------------------------------------------------------------------------*\ 101/*-------------------------------------------------------------------------*\
101* Select with timeout control 102* Select with timeout control
102\*-------------------------------------------------------------------------*/ 103\*-------------------------------------------------------------------------*/
103int socket_select(t_socket n, fd_set *rfds, fd_set *wfds, fd_set *efds, 104int socket_select(t_socket n, fd_set *rfds, fd_set *wfds, fd_set *efds,
104 p_timeout tm) { 105 p_timeout tm) {
105 int ret; 106 int ret;
106 do { 107 do {
@@ -119,8 +120,8 @@ int socket_select(t_socket n, fd_set *rfds, fd_set *wfds, fd_set *efds,
119\*-------------------------------------------------------------------------*/ 120\*-------------------------------------------------------------------------*/
120int socket_create(p_socket ps, int domain, int type, int protocol) { 121int socket_create(p_socket ps, int domain, int type, int protocol) {
121 *ps = socket(domain, type, protocol); 122 *ps = socket(domain, type, protocol);
122 if (*ps != SOCKET_INVALID) return IO_DONE; 123 if (*ps != SOCKET_INVALID) return IO_DONE;
123 else return errno; 124 else return errno;
124} 125}
125 126
126/*-------------------------------------------------------------------------*\ 127/*-------------------------------------------------------------------------*\
@@ -129,22 +130,22 @@ int socket_create(p_socket ps, int domain, int type, int protocol) {
129int socket_bind(p_socket ps, SA *addr, socklen_t len) { 130int socket_bind(p_socket ps, SA *addr, socklen_t len) {
130 int err = IO_DONE; 131 int err = IO_DONE;
131 socket_setblocking(ps); 132 socket_setblocking(ps);
132 if (bind(*ps, addr, len) < 0) err = errno; 133 if (bind(*ps, addr, len) < 0) err = errno;
133 socket_setnonblocking(ps); 134 socket_setnonblocking(ps);
134 return err; 135 return err;
135} 136}
136 137
137/*-------------------------------------------------------------------------*\ 138/*-------------------------------------------------------------------------*\
138* 139*
139\*-------------------------------------------------------------------------*/ 140\*-------------------------------------------------------------------------*/
140int socket_listen(p_socket ps, int backlog) { 141int socket_listen(p_socket ps, int backlog) {
141 int err = IO_DONE; 142 int err = IO_DONE;
142 if (listen(*ps, backlog)) err = errno; 143 if (listen(*ps, backlog)) err = errno;
143 return err; 144 return err;
144} 145}
145 146
146/*-------------------------------------------------------------------------*\ 147/*-------------------------------------------------------------------------*\
147* 148*
148\*-------------------------------------------------------------------------*/ 149\*-------------------------------------------------------------------------*/
149void socket_shutdown(p_socket ps, int how) { 150void socket_shutdown(p_socket ps, int how) {
150 shutdown(*ps, how); 151 shutdown(*ps, how);
@@ -161,7 +162,7 @@ int socket_connect(p_socket ps, SA *addr, socklen_t len, p_timeout tm) {
161 do if (connect(*ps, addr, len) == 0) return IO_DONE; 162 do if (connect(*ps, addr, len) == 0) return IO_DONE;
162 while ((err = errno) == EINTR); 163 while ((err = errno) == EINTR);
163 /* if connection failed immediately, return error code */ 164 /* if connection failed immediately, return error code */
164 if (err != EINPROGRESS && err != EAGAIN) return err; 165 if (err != EINPROGRESS && err != EAGAIN) return err;
165 /* zero timeout case optimization */ 166 /* zero timeout case optimization */
166 if (timeout_iszero(tm)) return IO_TIMEOUT; 167 if (timeout_iszero(tm)) return IO_TIMEOUT;
167 /* wait until we have the result of the connection attempt or timeout */ 168 /* wait until we have the result of the connection attempt or timeout */
@@ -176,7 +177,7 @@ int socket_connect(p_socket ps, SA *addr, socklen_t len, p_timeout tm) {
176* Accept with timeout 177* Accept with timeout
177\*-------------------------------------------------------------------------*/ 178\*-------------------------------------------------------------------------*/
178int socket_accept(p_socket ps, p_socket pa, SA *addr, socklen_t *len, p_timeout tm) { 179int socket_accept(p_socket ps, p_socket pa, SA *addr, socklen_t *len, p_timeout tm) {
179 if (*ps == SOCKET_INVALID) return IO_CLOSED; 180 if (*ps == SOCKET_INVALID) return IO_CLOSED;
180 for ( ;; ) { 181 for ( ;; ) {
181 int err; 182 int err;
182 if ((*pa = accept(*ps, addr, len)) != SOCKET_INVALID) return IO_DONE; 183 if ((*pa = accept(*ps, addr, len)) != SOCKET_INVALID) return IO_DONE;
@@ -192,7 +193,7 @@ int socket_accept(p_socket ps, p_socket pa, SA *addr, socklen_t *len, p_timeout
192/*-------------------------------------------------------------------------*\ 193/*-------------------------------------------------------------------------*\
193* Send with timeout 194* Send with timeout
194\*-------------------------------------------------------------------------*/ 195\*-------------------------------------------------------------------------*/
195int socket_send(p_socket ps, const char *data, size_t count, 196int socket_send(p_socket ps, const char *data, size_t count,
196 size_t *sent, p_timeout tm) 197 size_t *sent, p_timeout tm)
197{ 198{
198 int err; 199 int err;
@@ -224,14 +225,14 @@ int socket_send(p_socket ps, const char *data, size_t count,
224/*-------------------------------------------------------------------------*\ 225/*-------------------------------------------------------------------------*\
225* Sendto with timeout 226* Sendto with timeout
226\*-------------------------------------------------------------------------*/ 227\*-------------------------------------------------------------------------*/
227int socket_sendto(p_socket ps, const char *data, size_t count, size_t *sent, 228int socket_sendto(p_socket ps, const char *data, size_t count, size_t *sent,
228 SA *addr, socklen_t len, p_timeout tm) 229 SA *addr, socklen_t len, p_timeout tm)
229{ 230{
230 int err; 231 int err;
231 *sent = 0; 232 *sent = 0;
232 if (*ps == SOCKET_INVALID) return IO_CLOSED; 233 if (*ps == SOCKET_INVALID) return IO_CLOSED;
233 for ( ;; ) { 234 for ( ;; ) {
234 long put = (long) sendto(*ps, data, count, 0, addr, len); 235 long put = (long) sendto(*ps, data, count, 0, addr, len);
235 if (put >= 0) { 236 if (put >= 0) {
236 *sent = put; 237 *sent = put;
237 return IO_DONE; 238 return IO_DONE;
@@ -261,8 +262,8 @@ int socket_recv(p_socket ps, char *data, size_t count, size_t *got, p_timeout tm
261 err = errno; 262 err = errno;
262 if (taken == 0) return IO_CLOSED; 263 if (taken == 0) return IO_CLOSED;
263 if (err == EINTR) continue; 264 if (err == EINTR) continue;
264 if (err != EAGAIN) return err; 265 if (err != EAGAIN) return err;
265 if ((err = socket_waitfd(ps, WAITFD_R, tm)) != IO_DONE) return err; 266 if ((err = socket_waitfd(ps, WAITFD_R, tm)) != IO_DONE) return err;
266 } 267 }
267 return IO_UNKNOWN; 268 return IO_UNKNOWN;
268} 269}
@@ -270,7 +271,7 @@ int socket_recv(p_socket ps, char *data, size_t count, size_t *got, p_timeout tm
270/*-------------------------------------------------------------------------*\ 271/*-------------------------------------------------------------------------*\
271* Recvfrom with timeout 272* Recvfrom with timeout
272\*-------------------------------------------------------------------------*/ 273\*-------------------------------------------------------------------------*/
273int socket_recvfrom(p_socket ps, char *data, size_t count, size_t *got, 274int socket_recvfrom(p_socket ps, char *data, size_t count, size_t *got,
274 SA *addr, socklen_t *len, p_timeout tm) { 275 SA *addr, socklen_t *len, p_timeout tm) {
275 int err; 276 int err;
276 *got = 0; 277 *got = 0;
@@ -284,8 +285,8 @@ int socket_recvfrom(p_socket ps, char *data, size_t count, size_t *got,
284 err = errno; 285 err = errno;
285 if (taken == 0) return IO_CLOSED; 286 if (taken == 0) return IO_CLOSED;
286 if (err == EINTR) continue; 287 if (err == EINTR) continue;
287 if (err != EAGAIN) return err; 288 if (err != EAGAIN) return err;
288 if ((err = socket_waitfd(ps, WAITFD_R, tm)) != IO_DONE) return err; 289 if ((err = socket_waitfd(ps, WAITFD_R, tm)) != IO_DONE) return err;
289 } 290 }
290 return IO_UNKNOWN; 291 return IO_UNKNOWN;
291} 292}
@@ -298,7 +299,7 @@ int socket_recvfrom(p_socket ps, char *data, size_t count, size_t *got,
298* with send/recv replaced with write/read. We can't just use write/read 299* with send/recv replaced with write/read. We can't just use write/read
299* in the socket version, because behaviour when size is zero is different. 300* in the socket version, because behaviour when size is zero is different.
300\*-------------------------------------------------------------------------*/ 301\*-------------------------------------------------------------------------*/
301int socket_write(p_socket ps, const char *data, size_t count, 302int socket_write(p_socket ps, const char *data, size_t count,
302 size_t *sent, p_timeout tm) 303 size_t *sent, p_timeout tm)
303{ 304{
304 int err; 305 int err;
@@ -344,8 +345,8 @@ int socket_read(p_socket ps, char *data, size_t count, size_t *got, p_timeout tm
344 err = errno; 345 err = errno;
345 if (taken == 0) return IO_CLOSED; 346 if (taken == 0) return IO_CLOSED;
346 if (err == EINTR) continue; 347 if (err == EINTR) continue;
347 if (err != EAGAIN) return err; 348 if (err != EAGAIN) return err;
348 if ((err = socket_waitfd(ps, WAITFD_R, tm)) != IO_DONE) return err; 349 if ((err = socket_waitfd(ps, WAITFD_R, tm)) != IO_DONE) return err;
349 } 350 }
350 return IO_UNKNOWN; 351 return IO_UNKNOWN;
351} 352}
@@ -369,7 +370,7 @@ void socket_setnonblocking(p_socket ps) {
369} 370}
370 371
371/*-------------------------------------------------------------------------*\ 372/*-------------------------------------------------------------------------*\
372* DNS helpers 373* DNS helpers
373\*-------------------------------------------------------------------------*/ 374\*-------------------------------------------------------------------------*/
374int socket_gethostbyaddr(const char *addr, socklen_t len, struct hostent **hp) { 375int socket_gethostbyaddr(const char *addr, socklen_t len, struct hostent **hp) {
375 *hp = gethostbyaddr(addr, len, AF_INET); 376 *hp = gethostbyaddr(addr, len, AF_INET);
@@ -394,7 +395,7 @@ int socket_gethostbyname(const char *addr, struct hostent **hp) {
394const char *socket_hoststrerror(int err) { 395const char *socket_hoststrerror(int err) {
395 if (err <= 0) return io_strerror(err); 396 if (err <= 0) return io_strerror(err);
396 switch (err) { 397 switch (err) {
397 case HOST_NOT_FOUND: return "host not found"; 398 case HOST_NOT_FOUND: return PIE_HOST_NOT_FOUND;
398 default: return hstrerror(err); 399 default: return hstrerror(err);
399 } 400 }
400} 401}
@@ -402,13 +403,13 @@ const char *socket_hoststrerror(int err) {
402const char *socket_strerror(int err) { 403const char *socket_strerror(int err) {
403 if (err <= 0) return io_strerror(err); 404 if (err <= 0) return io_strerror(err);
404 switch (err) { 405 switch (err) {
405 case EADDRINUSE: return "address already in use"; 406 case EADDRINUSE: return PIE_ADDRINUSE;
406 case EISCONN: return "already connected"; 407 case EISCONN: return PIE_ISCONN;
407 case EACCES: return "permission denied"; 408 case EACCES: return PIE_ACCESS;
408 case ECONNREFUSED: return "connection refused"; 409 case ECONNREFUSED: return PIE_CONNREFUSED;
409 case ECONNABORTED: return "closed"; 410 case ECONNABORTED: return PIE_CONNABORTED;
410 case ECONNRESET: return "closed"; 411 case ECONNRESET: return PIE_CONNRESET;
411 case ETIMEDOUT: return "timeout"; 412 case ETIMEDOUT: return PIE_TIMEDOUT;
412 default: return strerror(err); 413 default: return strerror(err);
413 } 414 }
414} 415}
@@ -416,28 +417,27 @@ const char *socket_strerror(int err) {
416const char *socket_ioerror(p_socket ps, int err) { 417const char *socket_ioerror(p_socket ps, int err) {
417 (void) ps; 418 (void) ps;
418 return socket_strerror(err); 419 return socket_strerror(err);
419} 420}
420 421
421const char *socket_gaistrerror(int err) { 422const char *socket_gaistrerror(int err) {
422 if (err == 0) return NULL; 423 if (err == 0) return NULL;
423 switch (err) { 424 switch (err) {
424 case EAI_AGAIN: return "temporary failure in name resolution"; 425 case EAI_AGAIN: return PIE_AGAIN;
425 case EAI_BADFLAGS: return "invalid value for ai_flags"; 426 case EAI_BADFLAGS: return PIE_BADFLAGS;
426#ifdef EAI_BADHINTS 427#ifdef EAI_BADHINTS
427 case EAI_BADHINTS: return "invalid value for hints"; 428 case EAI_BADHINTS: return PIE_BADHINTS;
428#endif 429#endif
429 case EAI_FAIL: return "non-recoverable failure in name resolution"; 430 case EAI_FAIL: return PIE_FAIL;
430 case EAI_FAMILY: return "ai_family not supported"; 431 case EAI_FAMILY: return PIE_FAMILY;
431 case EAI_MEMORY: return "memory allocation failure"; 432 case EAI_MEMORY: return PIE_MEMORY;
432 case EAI_NONAME: 433 case EAI_NONAME: return PIE_NONAME;
433 return "host or service not provided, or not known"; 434 case EAI_OVERFLOW: return PIE_OVERFLOW;
434 case EAI_OVERFLOW: return "argument buffer overflow";
435#ifdef EAI_PROTOCOL 435#ifdef EAI_PROTOCOL
436 case EAI_PROTOCOL: return "resolved protocol is unknown"; 436 case EAI_PROTOCOL: return PIE_PROTOCOL;
437#endif 437#endif
438 case EAI_SERVICE: return "service not supported for socket type"; 438 case EAI_SERVICE: return PIE_SERVICE;
439 case EAI_SOCKTYPE: return "ai_socktype not supported"; 439 case EAI_SOCKTYPE: return PIE_SOCKTYPE;
440 case EAI_SYSTEM: return strerror(errno); 440 case EAI_SYSTEM: return strerror(errno);
441 default: return gai_strerror(err); 441 default: return gai_strerror(err);
442 } 442 }
443} 443}