2 * HTTP routines for CUPS.
4 * Copyright © 2007-2021 by Apple Inc.
5 * Copyright © 1997-2007 by Easy Software Products, all rights reserved.
7 * This file contains Kerberos support code, copyright 2006 by
10 * Licensed under Apache License v2.0. See the file "LICENSE" for more
15 * Include necessary headers...
18 #include "cups-private.h"
19 #include "debug-internal.h"
26 # include <sys/time.h>
27 # include <sys/resource.h>
31 #endif /* HAVE_POLL */
34 # endif /* HAVE_LIBZ */
41 static void http_add_field(http_t
*http
, http_field_t field
, const char *value
, int append
);
43 static void http_content_coding_finish(http_t
*http
);
44 static void http_content_coding_start(http_t
*http
,
46 #endif /* HAVE_LIBZ */
47 static http_t
*http_create(const char *host
, int port
,
48 http_addrlist_t
*addrlist
, int family
,
49 http_encryption_t encryption
,
50 int blocking
, _http_mode_t mode
);
52 static void http_debug_hex(const char *prefix
, const char *buffer
,
55 static ssize_t
http_read(http_t
*http
, char *buffer
, size_t length
);
56 static ssize_t
http_read_buffered(http_t
*http
, char *buffer
, size_t length
);
57 static ssize_t
http_read_chunk(http_t
*http
, char *buffer
, size_t length
);
58 static int http_send(http_t
*http
, http_state_t request
,
60 static ssize_t
http_write(http_t
*http
, const char *buffer
,
62 static ssize_t
http_write_chunk(http_t
*http
, const char *buffer
,
64 static off_t
http_set_length(http_t
*http
);
65 static void http_set_timeout(int fd
, double timeout
);
66 static void http_set_wait(http_t
*http
);
69 static int http_tls_upgrade(http_t
*http
);
77 static const char * const http_fields
[] =
94 "If-Unmodified-since",
109 "Authentication-Info"
114 * 'httpAcceptConnection()' - Accept a new HTTP client connection from the
115 * specified listening socket.
117 * @since CUPS 1.7/macOS 10.9@
120 http_t
* /* O - HTTP connection or @code NULL@ */
121 httpAcceptConnection(int fd
, /* I - Listen socket file descriptor */
122 int blocking
) /* I - 1 if the connection should be
123 blocking, 0 otherwise */
125 http_t
*http
; /* HTTP connection */
126 http_addrlist_t addrlist
; /* Dummy address list */
127 socklen_t addrlen
; /* Length of address */
128 int val
; /* Socket option value */
132 * Range check input...
139 * Create the client connection...
142 memset(&addrlist
, 0, sizeof(addrlist
));
144 if ((http
= http_create(NULL
, 0, &addrlist
, AF_UNSPEC
,
145 HTTP_ENCRYPTION_IF_REQUESTED
, blocking
,
146 _HTTP_MODE_SERVER
)) == NULL
)
150 * Accept the client and get the remote address...
153 addrlen
= sizeof(http_addr_t
);
155 if ((http
->fd
= accept(fd
, (struct sockaddr
*)&(http
->addrlist
->addr
),
158 _cupsSetHTTPError(HTTP_STATUS_ERROR
);
164 http
->hostaddr
= &(http
->addrlist
->addr
);
166 if (httpAddrLocalhost(http
->hostaddr
))
167 strlcpy(http
->hostname
, "localhost", sizeof(http
->hostname
));
169 httpAddrString(http
->hostaddr
, http
->hostname
, sizeof(http
->hostname
));
173 * Disable SIGPIPE for this socket.
177 setsockopt(http
->fd
, SOL_SOCKET
, SO_NOSIGPIPE
, CUPS_SOCAST
&val
, sizeof(val
));
178 #endif /* SO_NOSIGPIPE */
181 * Using TCP_NODELAY improves responsiveness, especially on systems
182 * with a slow loopback interface. Since we write large buffers
183 * when sending print files and requests, there shouldn't be any
184 * performance penalty for this...
188 setsockopt(http
->fd
, IPPROTO_TCP
, TCP_NODELAY
, CUPS_SOCAST
&val
, sizeof(val
));
192 * Close this socket when starting another process...
195 fcntl(http
->fd
, F_SETFD
, FD_CLOEXEC
);
196 #endif /* FD_CLOEXEC */
203 * 'httpAddCredential()' - Allocates and adds a single credential to an array.
205 * Use @code cupsArrayNew(NULL, NULL)@ to create a credentials array.
207 * @since CUPS 1.5/macOS 10.7@
210 int /* O - 0 on success, -1 on error */
212 cups_array_t
*credentials
, /* I - Credentials array */
213 const void *data
, /* I - PEM-encoded X.509 data */
214 size_t datalen
) /* I - Length of data */
216 http_credential_t
*credential
; /* Credential data */
219 if ((credential
= malloc(sizeof(http_credential_t
))) != NULL
)
221 credential
->datalen
= datalen
;
223 if ((credential
->data
= malloc(datalen
)) != NULL
)
225 memcpy(credential
->data
, data
, datalen
);
226 cupsArrayAdd(credentials
, credential
);
238 * 'httpBlocking()' - Set blocking/non-blocking behavior on a connection.
242 httpBlocking(http_t
*http
, /* I - HTTP connection */
243 int b
) /* I - 1 = blocking, 0 = non-blocking */
254 * 'httpCheck()' - Check to see if there is a pending response from the server.
257 int /* O - 0 = no data, 1 = data available */
258 httpCheck(http_t
*http
) /* I - HTTP connection */
260 return (httpWait(http
, 0));
265 * 'httpClearCookie()' - Clear the cookie value(s).
267 * @since CUPS 1.1.19/macOS 10.3@
271 httpClearCookie(http_t
*http
) /* I - HTTP connection */
285 * 'httpClearFields()' - Clear HTTP request fields.
289 httpClearFields(http_t
*http
) /* I - HTTP connection */
291 http_field_t field
; /* Current field */
294 DEBUG_printf(("httpClearFields(http=%p)", (void *)http
));
298 memset(http
->_fields
, 0, sizeof(http
->fields
));
300 for (field
= HTTP_FIELD_ACCEPT_LANGUAGE
; field
< HTTP_FIELD_MAX
; field
++)
302 if (http
->fields
[field
] && http
->fields
[field
] != http
->_fields
[field
])
303 free(http
->fields
[field
]);
305 http
->fields
[field
] = NULL
;
308 if (http
->mode
== _HTTP_MODE_CLIENT
)
310 if (http
->hostname
[0] == '/')
311 httpSetField(http
, HTTP_FIELD_HOST
, "localhost");
313 httpSetField(http
, HTTP_FIELD_HOST
, http
->hostname
);
316 http
->expect
= (http_status_t
)0;
322 * 'httpClose()' - Close an HTTP connection.
326 httpClose(http_t
*http
) /* I - HTTP connection */
329 OM_uint32 minor_status
; /* Minor status code */
330 #endif /* HAVE_GSSAPI */
333 DEBUG_printf(("httpClose(http=%p)", (void *)http
));
336 * Range check input...
343 * Close any open connection...
346 _httpDisconnect(http
);
349 * Free memory used...
352 httpAddrFreeList(http
->addrlist
);
358 if (http
->gssctx
!= GSS_C_NO_CONTEXT
)
359 gss_delete_sec_context(&minor_status
, &http
->gssctx
, GSS_C_NO_BUFFER
);
361 if (http
->gssname
!= GSS_C_NO_NAME
)
362 gss_release_name(&minor_status
, &http
->gssname
);
363 #endif /* HAVE_GSSAPI */
365 #ifdef HAVE_AUTHORIZATION_H
367 AuthorizationFree(http
->auth_ref
, kAuthorizationFlagDefaults
);
368 #endif /* HAVE_AUTHORIZATION_H */
370 httpClearFields(http
);
372 if (http
->authstring
&& http
->authstring
!= http
->_authstring
)
373 free(http
->authstring
);
380 * 'httpCompareCredentials()' - Compare two sets of X.509 credentials.
382 * @since CUPS 2.0/OS 10.10@
385 int /* O - 1 if they match, 0 if they do not */
386 httpCompareCredentials(
387 cups_array_t
*cred1
, /* I - First set of X.509 credentials */
388 cups_array_t
*cred2
) /* I - Second set of X.509 credentials */
390 http_credential_t
*temp1
, *temp2
; /* Temporary credentials */
393 for (temp1
= (http_credential_t
*)cupsArrayFirst(cred1
), temp2
= (http_credential_t
*)cupsArrayFirst(cred2
); temp1
&& temp2
; temp1
= (http_credential_t
*)cupsArrayNext(cred1
), temp2
= (http_credential_t
*)cupsArrayNext(cred2
))
394 if (temp1
->datalen
!= temp2
->datalen
)
396 else if (memcmp(temp1
->data
, temp2
->data
, temp1
->datalen
))
399 return (temp1
== temp2
);
404 * 'httpConnect()' - Connect to a HTTP server.
406 * This function is deprecated - use @link httpConnect2@ instead.
408 * @deprecated@ @exclude all@
411 http_t
* /* O - New HTTP connection */
412 httpConnect(const char *host
, /* I - Host to connect to */
413 int port
) /* I - Port number */
415 return (httpConnect2(host
, port
, NULL
, AF_UNSPEC
,
416 HTTP_ENCRYPTION_IF_REQUESTED
, 1, 30000, NULL
));
421 * 'httpConnect2()' - Connect to a HTTP server.
423 * @since CUPS 1.7/macOS 10.9@
426 http_t
* /* O - New HTTP connection */
428 const char *host
, /* I - Host to connect to */
429 int port
, /* I - Port number */
430 http_addrlist_t
*addrlist
, /* I - List of addresses or @code NULL@ to lookup */
431 int family
, /* I - Address family to use or @code AF_UNSPEC@ for any */
432 http_encryption_t encryption
, /* I - Type of encryption to use */
433 int blocking
, /* I - 1 for blocking connection, 0 for non-blocking */
434 int msec
, /* I - Connection timeout in milliseconds, 0 means don't connect */
435 int *cancel
) /* I - Pointer to "cancel" variable */
437 http_t
*http
; /* New HTTP connection */
440 DEBUG_printf(("httpConnect2(host=\"%s\", port=%d, addrlist=%p, family=%d, encryption=%d, blocking=%d, msec=%d, cancel=%p)", host
, port
, (void *)addrlist
, family
, encryption
, blocking
, msec
, (void *)cancel
));
443 * Create the HTTP structure...
446 if ((http
= http_create(host
, port
, addrlist
, family
, encryption
, blocking
,
447 _HTTP_MODE_CLIENT
)) == NULL
)
451 * Optionally connect to the remote system...
454 if (msec
== 0 || !httpReconnect2(http
, msec
, cancel
))
458 * Could not connect to any known address - bail out!
468 * 'httpConnectEncrypt()' - Connect to a HTTP server using encryption.
470 * This function is now deprecated. Please use the @link httpConnect2@ function
473 * @deprecated@ @exclude all@
476 http_t
* /* O - New HTTP connection */
478 const char *host
, /* I - Host to connect to */
479 int port
, /* I - Port number */
480 http_encryption_t encryption
) /* I - Type of encryption to use */
482 DEBUG_printf(("httpConnectEncrypt(host=\"%s\", port=%d, encryption=%d)",
483 host
, port
, encryption
));
485 return (httpConnect2(host
, port
, NULL
, AF_UNSPEC
, encryption
, 1, 30000,
491 * 'httpDelete()' - Send a DELETE request to the server.
494 int /* O - Status of call (0 = success) */
495 httpDelete(http_t
*http
, /* I - HTTP connection */
496 const char *uri
) /* I - URI to delete */
498 return (http_send(http
, HTTP_STATE_DELETE
, uri
));
503 * '_httpDisconnect()' - Disconnect a HTTP connection.
507 _httpDisconnect(http_t
*http
) /* I - HTTP connection */
512 #endif /* HAVE_SSL */
514 httpAddrClose(NULL
, http
->fd
);
521 * 'httpEncryption()' - Set the required encryption on the link.
524 int /* O - -1 on error, 0 on success */
525 httpEncryption(http_t
*http
, /* I - HTTP connection */
526 http_encryption_t e
) /* I - New encryption preference */
528 DEBUG_printf(("httpEncryption(http=%p, e=%d)", (void *)http
, e
));
534 if (http
->mode
== _HTTP_MODE_CLIENT
)
536 http
->encryption
= e
;
538 if ((http
->encryption
== HTTP_ENCRYPTION_ALWAYS
&& !http
->tls
) ||
539 (http
->encryption
== HTTP_ENCRYPTION_NEVER
&& http
->tls
))
540 return (httpReconnect2(http
, 30000, NULL
));
541 else if (http
->encryption
== HTTP_ENCRYPTION_REQUIRED
&& !http
->tls
)
542 return (http_tls_upgrade(http
));
548 if (e
== HTTP_ENCRYPTION_NEVER
&& http
->tls
)
551 http
->encryption
= e
;
552 if (e
!= HTTP_ENCRYPTION_IF_REQUESTED
&& !http
->tls
)
553 return (_httpTLSStart(http
));
558 if (e
== HTTP_ENCRYPTION_ALWAYS
|| e
== HTTP_ENCRYPTION_REQUIRED
)
562 #endif /* HAVE_SSL */
567 * 'httpError()' - Get the last error on a connection.
570 int /* O - Error code (errno) value */
571 httpError(http_t
*http
) /* I - HTTP connection */
574 return (http
->error
);
581 * 'httpFieldValue()' - Return the HTTP field enumeration value for a field
585 http_field_t
/* O - Field index */
586 httpFieldValue(const char *name
) /* I - String name */
588 int i
; /* Looping var */
591 for (i
= 0; i
< HTTP_FIELD_MAX
; i
++)
592 if (!_cups_strcasecmp(name
, http_fields
[i
]))
593 return ((http_field_t
)i
);
595 return (HTTP_FIELD_UNKNOWN
);
600 * 'httpFlush()' - Flush data read from a HTTP connection.
604 httpFlush(http_t
*http
) /* I - HTTP connection */
606 char buffer
[8192]; /* Junk buffer */
607 int blocking
; /* To block or not to block */
608 http_state_t oldstate
; /* Old state */
611 DEBUG_printf(("httpFlush(http=%p), state=%s", (void *)http
, httpStateString(http
->state
)));
614 * Nothing to do if we are in the "waiting" state...
617 if (http
->state
== HTTP_STATE_WAITING
)
621 * Temporarily set non-blocking mode so we don't get stuck in httpRead()...
624 blocking
= http
->blocking
;
628 * Read any data we can...
631 oldstate
= http
->state
;
632 while (httpRead2(http
, buffer
, sizeof(buffer
)) > 0);
635 * Restore blocking and reset the connection if we didn't get all of
636 * the remaining data...
639 http
->blocking
= blocking
;
641 if (http
->state
== oldstate
&& http
->state
!= HTTP_STATE_WAITING
&&
645 * Didn't get the data back, so close the current connection.
650 http_content_coding_finish(http
);
651 #endif /* HAVE_LIBZ */
653 DEBUG_puts("1httpFlush: Setting state to HTTP_STATE_WAITING and closing.");
655 http
->state
= HTTP_STATE_WAITING
;
660 #endif /* HAVE_SSL */
662 httpAddrClose(NULL
, http
->fd
);
670 * 'httpFlushWrite()' - Flush data written to a HTTP connection.
672 * @since CUPS 1.2/macOS 10.5@
675 int /* O - Bytes written or -1 on error */
676 httpFlushWrite(http_t
*http
) /* I - HTTP connection */
678 ssize_t bytes
; /* Bytes written */
681 DEBUG_printf(("httpFlushWrite(http=%p) data_encoding=%d", (void *)http
, http
? http
->data_encoding
: 100));
683 if (!http
|| !http
->wused
)
685 DEBUG_puts(http
? "1httpFlushWrite: Write buffer is empty." :
686 "1httpFlushWrite: No connection.");
690 if (http
->data_encoding
== HTTP_ENCODING_CHUNKED
)
691 bytes
= http_write_chunk(http
, http
->wbuffer
, (size_t)http
->wused
);
693 bytes
= http_write(http
, http
->wbuffer
, (size_t)http
->wused
);
697 DEBUG_printf(("1httpFlushWrite: Returning %d, errno=%d.", (int)bytes
, errno
));
704 * 'httpFreeCredentials()' - Free an array of credentials.
709 cups_array_t
*credentials
) /* I - Array of credentials */
711 http_credential_t
*credential
; /* Credential */
714 for (credential
= (http_credential_t
*)cupsArrayFirst(credentials
);
716 credential
= (http_credential_t
*)cupsArrayNext(credentials
))
718 cupsArrayRemove(credentials
, credential
);
719 free((void *)credential
->data
);
723 cupsArrayDelete(credentials
);
728 * 'httpGet()' - Send a GET request to the server.
731 int /* O - Status of call (0 = success) */
732 httpGet(http_t
*http
, /* I - HTTP connection */
733 const char *uri
) /* I - URI to get */
735 return (http_send(http
, HTTP_STATE_GET
, uri
));
740 * 'httpGetActivity()' - Get the most recent activity for a connection.
742 * The return value is the time in seconds of the last read or write.
744 * @since CUPS 2.0/OS 10.10@
747 time_t /* O - Time of last read or write */
748 httpGetActivity(http_t
*http
) /* I - HTTP connection */
750 return (http
? http
->activity
: 0);
755 * 'httpGetAuthString()' - Get the current authorization string.
757 * The authorization string is set by @link cupsDoAuthentication@ and
758 * @link httpSetAuthString@. Use @link httpGetAuthString@ to retrieve the
759 * string to use with @link httpSetField@ for the
760 * @code HTTP_FIELD_AUTHORIZATION@ value.
762 * @since CUPS 1.3/macOS 10.5@
765 char * /* O - Authorization string */
766 httpGetAuthString(http_t
*http
) /* I - HTTP connection */
769 return (http
->authstring
);
776 * 'httpGetBlocking()' - Get the blocking/non-block state of a connection.
778 * @since CUPS 1.2/macOS 10.5@
781 int /* O - 1 if blocking, 0 if non-blocking */
782 httpGetBlocking(http_t
*http
) /* I - HTTP connection */
784 return (http
? http
->blocking
: 0);
789 * 'httpGetContentEncoding()' - Get a common content encoding, if any, between
790 * the client and server.
792 * This function uses the value of the Accepts-Encoding HTTP header and must be
793 * called after receiving a response from the server or a request from the
794 * client. The value returned can be use in subsequent requests (for clients)
795 * or in the response (for servers) in order to compress the content stream.
797 * @since CUPS 1.7/macOS 10.9@
800 const char * /* O - Content-Coding value or
801 @code NULL@ for the identity
803 httpGetContentEncoding(http_t
*http
) /* I - HTTP connection */
806 if (http
&& http
->fields
[HTTP_FIELD_ACCEPT_ENCODING
])
808 int i
; /* Looping var */
809 char temp
[HTTP_MAX_VALUE
], /* Copy of Accepts-Encoding value */
810 *start
, /* Start of coding value */
811 *end
; /* End of coding value */
812 double qvalue
; /* "qvalue" for coding */
813 struct lconv
*loc
= localeconv(); /* Locale data */
814 static const char * const codings
[] =
815 { /* Supported content codings */
822 strlcpy(temp
, http
->fields
[HTTP_FIELD_ACCEPT_ENCODING
], sizeof(temp
));
824 for (start
= temp
; *start
; start
= end
)
827 * Find the end of the coding name...
832 while (*end
&& *end
!= ';' && *end
!= ',' && !isspace(*end
& 255))
838 * Grab the qvalue as needed...
841 if (!strncmp(end
, ";q=", 3))
842 qvalue
= _cupsStrScand(end
+ 3, NULL
, loc
);
845 * Skip past all attributes...
849 while (*end
&& *end
!= ',' && !isspace(*end
& 255))
855 while (*end
&& isspace(*end
& 255))
859 * Check value if it matches something we support...
865 for (i
= 0; i
< (int)(sizeof(codings
) / sizeof(codings
[0])); i
++)
866 if (!strcmp(start
, codings
[i
]))
870 #endif /* HAVE_LIBZ */
877 * 'httpGetCookie()' - Get any cookie data from the response.
879 * @since CUPS 1.1.19/macOS 10.3@
882 const char * /* O - Cookie data or @code NULL@ */
883 httpGetCookie(http_t
*http
) /* I - HTTP connection */
885 return (http
? http
->cookie
: NULL
);
890 * 'httpGetEncryption()' - Get the current encryption mode of a connection.
892 * This function returns the encryption mode for the connection. Use the
893 * @link httpIsEncrypted@ function to determine whether a TLS session has
896 * @since CUPS 2.0/OS 10.10@
899 http_encryption_t
/* O - Current encryption mode */
900 httpGetEncryption(http_t
*http
) /* I - HTTP connection */
902 return (http
? http
->encryption
: HTTP_ENCRYPTION_IF_REQUESTED
);
907 * 'httpGetExpect()' - Get the value of the Expect header, if any.
909 * Returns @code HTTP_STATUS_NONE@ if there is no Expect header, otherwise
910 * returns the expected HTTP status code, typically @code HTTP_STATUS_CONTINUE@.
912 * @since CUPS 1.7/macOS 10.9@
915 http_status_t
/* O - Expect: status, if any */
916 httpGetExpect(http_t
*http
) /* I - HTTP connection */
919 return (HTTP_STATUS_ERROR
);
921 return (http
->expect
);
926 * 'httpGetFd()' - Get the file descriptor associated with a connection.
928 * @since CUPS 1.2/macOS 10.5@
931 int /* O - File descriptor or -1 if none */
932 httpGetFd(http_t
*http
) /* I - HTTP connection */
934 return (http
? http
->fd
: -1);
939 * 'httpGetField()' - Get a field value from a request/response.
942 const char * /* O - Field value */
943 httpGetField(http_t
*http
, /* I - HTTP connection */
944 http_field_t field
) /* I - Field to get */
946 if (!http
|| field
<= HTTP_FIELD_UNKNOWN
|| field
>= HTTP_FIELD_MAX
)
948 else if (http
->fields
[field
])
949 return (http
->fields
[field
]);
956 * 'httpGetKeepAlive()' - Get the current Keep-Alive state of the connection.
958 * @since CUPS 2.0/OS 10.10@
961 http_keepalive_t
/* O - Keep-Alive state */
962 httpGetKeepAlive(http_t
*http
) /* I - HTTP connection */
964 return (http
? http
->keep_alive
: HTTP_KEEPALIVE_OFF
);
969 * 'httpGetLength()' - Get the amount of data remaining from the
970 * content-length or transfer-encoding fields.
972 * This function is deprecated and will not return lengths larger than
973 * 2^31 - 1; use httpGetLength2() instead.
975 * @deprecated@ @exclude all@
978 int /* O - Content length */
979 httpGetLength(http_t
*http
) /* I - HTTP connection */
982 * Get the read content length and return the 32-bit value.
987 httpGetLength2(http
);
989 return (http
->_data_remaining
);
997 * 'httpGetLength2()' - Get the amount of data remaining from the
998 * content-length or transfer-encoding fields.
1000 * This function returns the complete content length, even for
1001 * content larger than 2^31 - 1.
1003 * @since CUPS 1.2/macOS 10.5@
1006 off_t
/* O - Content length */
1007 httpGetLength2(http_t
*http
) /* I - HTTP connection */
1009 off_t remaining
; /* Remaining length */
1012 DEBUG_printf(("2httpGetLength2(http=%p), state=%s", (void *)http
, httpStateString(http
->state
)));
1017 if (http
->fields
[HTTP_FIELD_TRANSFER_ENCODING
] && !_cups_strcasecmp(http
->fields
[HTTP_FIELD_TRANSFER_ENCODING
], "chunked"))
1019 DEBUG_puts("4httpGetLength2: chunked request!");
1025 * The following is a hack for HTTP servers that don't send a
1026 * Content-Length or Transfer-Encoding field...
1028 * If there is no Content-Length then the connection must close
1029 * after the transfer is complete...
1032 if (!http
->fields
[HTTP_FIELD_CONTENT_LENGTH
] || !http
->fields
[HTTP_FIELD_CONTENT_LENGTH
][0])
1035 * Default content length is 0 for errors and certain types of operations,
1036 * and 2^31-1 for other successful requests...
1039 if (http
->status
>= HTTP_STATUS_MULTIPLE_CHOICES
||
1040 http
->state
== HTTP_STATE_OPTIONS
||
1041 (http
->state
== HTTP_STATE_GET
&& http
->mode
== _HTTP_MODE_SERVER
) ||
1042 http
->state
== HTTP_STATE_HEAD
||
1043 (http
->state
== HTTP_STATE_PUT
&& http
->mode
== _HTTP_MODE_CLIENT
) ||
1044 http
->state
== HTTP_STATE_DELETE
||
1045 http
->state
== HTTP_STATE_TRACE
||
1046 http
->state
== HTTP_STATE_CONNECT
)
1049 remaining
= 2147483647;
1051 else if ((remaining
= strtoll(http
->fields
[HTTP_FIELD_CONTENT_LENGTH
],
1055 DEBUG_printf(("4httpGetLength2: content_length=" CUPS_LLFMT
,
1056 CUPS_LLCAST remaining
));
1064 * 'httpGetPending()' - Get the number of bytes that are buffered for writing.
1066 * @since CUPS 2.0/OS 10.10@
1069 size_t /* O - Number of bytes buffered */
1070 httpGetPending(http_t
*http
) /* I - HTTP connection */
1072 return (http
? (size_t)http
->wused
: 0);
1077 * 'httpGetReady()' - Get the number of bytes that can be read without blocking.
1079 * @since CUPS 2.0/OS 10.10@
1082 size_t /* O - Number of bytes available */
1083 httpGetReady(http_t
*http
) /* I - HTTP connection */
1087 else if (http
->used
> 0)
1088 return ((size_t)http
->used
);
1091 return (_httpTLSPending(http
));
1092 #endif /* HAVE_SSL */
1099 * 'httpGetRemaining()' - Get the number of remaining bytes in the message
1100 * body or current chunk.
1102 * The @link httpIsChunked@ function can be used to determine whether the
1103 * message body is chunked or fixed-length.
1105 * @since CUPS 2.0/OS 10.10@
1108 size_t /* O - Remaining bytes */
1109 httpGetRemaining(http_t
*http
) /* I - HTTP connection */
1111 return (http
? (size_t)http
->data_remaining
: 0);
1116 * 'httpGets()' - Get a line of text from a HTTP connection.
1119 char * /* O - Line or @code NULL@ */
1120 httpGets(char *line
, /* I - Line to read into */
1121 int length
, /* I - Max length of buffer */
1122 http_t
*http
) /* I - HTTP connection */
1124 char *lineptr
, /* Pointer into line */
1125 *lineend
, /* End of line */
1126 *bufptr
, /* Pointer into input buffer */
1127 *bufend
; /* Pointer to end of buffer */
1128 ssize_t bytes
; /* Number of bytes read */
1129 int eol
; /* End-of-line? */
1132 DEBUG_printf(("2httpGets(line=%p, length=%d, http=%p)", (void *)line
, length
, (void *)http
));
1134 if (!http
|| !line
|| length
<= 1)
1138 * Read a line from the buffer...
1143 lineend
= line
+ length
- 1;
1146 while (lineptr
< lineend
)
1149 * Pre-load the buffer as needed...
1158 while (http
->used
== 0)
1161 * No newline; see if there is more data to be read...
1164 while (!_httpWait(http
, http
->wait_value
, 1))
1166 if (http
->timeout_cb
&& (*http
->timeout_cb
)(http
, http
->timeout_data
))
1169 DEBUG_puts("3httpGets: Timed out!");
1171 http
->error
= WSAETIMEDOUT
;
1173 http
->error
= ETIMEDOUT
;
1178 bytes
= http_read(http
, http
->buffer
+ http
->used
, (size_t)(HTTP_MAX_BUFFER
- http
->used
));
1180 DEBUG_printf(("4httpGets: read " CUPS_LLFMT
" bytes.", CUPS_LLCAST bytes
));
1185 * Nope, can't get a line this time...
1189 DEBUG_printf(("3httpGets: recv() error %d!", WSAGetLastError()));
1191 if (WSAGetLastError() == WSAEINTR
)
1193 else if (WSAGetLastError() == WSAEWOULDBLOCK
)
1195 if (http
->timeout_cb
&& (*http
->timeout_cb
)(http
, http
->timeout_data
))
1198 http
->error
= WSAGetLastError();
1200 else if (WSAGetLastError() != http
->error
)
1202 http
->error
= WSAGetLastError();
1207 DEBUG_printf(("3httpGets: recv() error %d!", errno
));
1211 else if (errno
== EWOULDBLOCK
|| errno
== EAGAIN
)
1213 if (http
->timeout_cb
&& (*http
->timeout_cb
)(http
, http
->timeout_data
))
1215 else if (!http
->timeout_cb
&& errno
== EAGAIN
)
1218 http
->error
= errno
;
1220 else if (errno
!= http
->error
)
1222 http
->error
= errno
;
1229 else if (bytes
== 0)
1231 http
->error
= EPIPE
;
1237 * Yup, update the amount used...
1240 http
->used
+= (int)bytes
;
1244 * Now copy as much of the current line as possible...
1247 for (bufptr
= http
->buffer
, bufend
= http
->buffer
+ http
->used
;
1248 lineptr
< lineend
&& bufptr
< bufend
;)
1250 if (*bufptr
== 0x0a)
1256 else if (*bufptr
== 0x0d)
1259 *lineptr
++ = *bufptr
++;
1262 http
->used
-= (int)(bufptr
- http
->buffer
);
1264 memmove(http
->buffer
, bufptr
, (size_t)http
->used
);
1272 http
->activity
= time(NULL
);
1276 DEBUG_printf(("3httpGets: Returning \"%s\"", line
));
1282 DEBUG_puts("3httpGets: No new line available!");
1289 * 'httpGetState()' - Get the current state of the HTTP request.
1292 http_state_t
/* O - HTTP state */
1293 httpGetState(http_t
*http
) /* I - HTTP connection */
1295 return (http
? http
->state
: HTTP_STATE_ERROR
);
1300 * 'httpGetStatus()' - Get the status of the last HTTP request.
1302 * @since CUPS 1.2/macOS 10.5@
1305 http_status_t
/* O - HTTP status */
1306 httpGetStatus(http_t
*http
) /* I - HTTP connection */
1308 return (http
? http
->status
: HTTP_STATUS_ERROR
);
1313 * 'httpGetSubField()' - Get a sub-field value.
1315 * @deprecated@ @exclude all@
1318 char * /* O - Value or @code NULL@ */
1319 httpGetSubField(http_t
*http
, /* I - HTTP connection */
1320 http_field_t field
, /* I - Field index */
1321 const char *name
, /* I - Name of sub-field */
1322 char *value
) /* O - Value string */
1324 return (httpGetSubField2(http
, field
, name
, value
, HTTP_MAX_VALUE
));
1329 * 'httpGetSubField2()' - Get a sub-field value.
1331 * @since CUPS 1.2/macOS 10.5@
1334 char * /* O - Value or @code NULL@ */
1335 httpGetSubField2(http_t
*http
, /* I - HTTP connection */
1336 http_field_t field
, /* I - Field index */
1337 const char *name
, /* I - Name of sub-field */
1338 char *value
, /* O - Value string */
1339 int valuelen
) /* I - Size of value buffer */
1341 const char *fptr
; /* Pointer into field */
1342 char temp
[HTTP_MAX_VALUE
], /* Temporary buffer for name */
1343 *ptr
, /* Pointer into string buffer */
1344 *end
; /* End of value buffer */
1346 DEBUG_printf(("2httpGetSubField2(http=%p, field=%d, name=\"%s\", value=%p, valuelen=%d)", (void *)http
, field
, name
, (void *)value
, valuelen
));
1351 if (!http
|| !name
|| !value
|| valuelen
< 2 ||
1352 field
<= HTTP_FIELD_UNKNOWN
|| field
>= HTTP_FIELD_MAX
|| !http
->fields
[field
])
1355 end
= value
+ valuelen
- 1;
1357 for (fptr
= http
->fields
[field
]; *fptr
;)
1360 * Skip leading whitespace...
1363 while (_cups_isspace(*fptr
))
1373 * Get the sub-field name...
1377 *fptr
&& *fptr
!= '=' && !_cups_isspace(*fptr
) &&
1378 ptr
< (temp
+ sizeof(temp
) - 1);
1383 DEBUG_printf(("4httpGetSubField2: name=\"%s\"", temp
));
1386 * Skip trailing chars up to the '='...
1389 while (_cups_isspace(*fptr
))
1399 * Skip = and leading whitespace...
1404 while (_cups_isspace(*fptr
))
1410 * Read quoted string...
1413 for (ptr
= value
, fptr
++;
1414 *fptr
&& *fptr
!= '\"' && ptr
< end
;
1419 while (*fptr
&& *fptr
!= '\"')
1428 * Read unquoted string...
1432 *fptr
&& !_cups_isspace(*fptr
) && *fptr
!= ',' && ptr
< end
;
1437 while (*fptr
&& !_cups_isspace(*fptr
) && *fptr
!= ',')
1441 DEBUG_printf(("4httpGetSubField2: value=\"%s\"", value
));
1444 * See if this is the one...
1447 if (!strcmp(name
, temp
))
1449 DEBUG_printf(("3httpGetSubField2: Returning \"%s\"", value
));
1456 DEBUG_puts("3httpGetSubField2: Returning NULL");
1463 * 'httpGetVersion()' - Get the HTTP version at the other end.
1466 http_version_t
/* O - Version number */
1467 httpGetVersion(http_t
*http
) /* I - HTTP connection */
1469 return (http
? http
->version
: HTTP_VERSION_1_0
);
1474 * 'httpHead()' - Send a HEAD request to the server.
1477 int /* O - Status of call (0 = success) */
1478 httpHead(http_t
*http
, /* I - HTTP connection */
1479 const char *uri
) /* I - URI for head */
1481 DEBUG_printf(("httpHead(http=%p, uri=\"%s\")", (void *)http
, uri
));
1482 return (http_send(http
, HTTP_STATE_HEAD
, uri
));
1487 * 'httpInitialize()' - Initialize the HTTP interface library and set the
1488 * default HTTP proxy (if any).
1492 httpInitialize(void)
1494 static int initialized
= 0; /* Have we been called before? */
1496 WSADATA winsockdata
; /* WinSock data */
1503 _cupsGlobalUnlock();
1508 WSAStartup(MAKEWORD(2,2), &winsockdata
);
1510 #elif !defined(SO_NOSIGPIPE)
1512 * Ignore SIGPIPE signals...
1516 sigset(SIGPIPE
, SIG_IGN
);
1518 # elif defined(HAVE_SIGACTION)
1519 struct sigaction action
; /* POSIX sigaction data */
1522 memset(&action
, 0, sizeof(action
));
1523 action
.sa_handler
= SIG_IGN
;
1524 sigaction(SIGPIPE
, &action
, NULL
);
1527 signal(SIGPIPE
, SIG_IGN
);
1528 # endif /* !SO_NOSIGPIPE */
1532 _httpTLSInitialize();
1533 # endif /* HAVE_SSL */
1536 _cupsGlobalUnlock();
1541 * 'httpIsChunked()' - Report whether a message body is chunked.
1543 * This function returns non-zero if the message body is composed of
1544 * variable-length chunks.
1546 * @since CUPS 2.0/OS 10.10@
1549 int /* O - 1 if chunked, 0 if not */
1550 httpIsChunked(http_t
*http
) /* I - HTTP connection */
1552 return (http
? http
->data_encoding
== HTTP_ENCODING_CHUNKED
: 0);
1557 * 'httpIsEncrypted()' - Report whether a connection is encrypted.
1559 * This function returns non-zero if the connection is currently encrypted.
1561 * @since CUPS 2.0/OS 10.10@
1564 int /* O - 1 if encrypted, 0 if not */
1565 httpIsEncrypted(http_t
*http
) /* I - HTTP connection */
1567 return (http
? http
->tls
!= NULL
: 0);
1572 * 'httpOptions()' - Send an OPTIONS request to the server.
1575 int /* O - Status of call (0 = success) */
1576 httpOptions(http_t
*http
, /* I - HTTP connection */
1577 const char *uri
) /* I - URI for options */
1579 return (http_send(http
, HTTP_STATE_OPTIONS
, uri
));
1584 * 'httpPeek()' - Peek at data from a HTTP connection.
1586 * This function copies available data from the given HTTP connection, reading
1587 * a buffer as needed. The data is still available for reading using
1590 * For non-blocking connections the usual timeouts apply.
1592 * @since CUPS 1.7/macOS 10.9@
1595 ssize_t
/* O - Number of bytes copied */
1596 httpPeek(http_t
*http
, /* I - HTTP connection */
1597 char *buffer
, /* I - Buffer for data */
1598 size_t length
) /* I - Maximum number of bytes */
1600 ssize_t bytes
; /* Bytes read */
1601 char len
[32]; /* Length string */
1604 DEBUG_printf(("httpPeek(http=%p, buffer=%p, length=" CUPS_LLFMT
")", (void *)http
, (void *)buffer
, CUPS_LLCAST length
));
1606 if (http
== NULL
|| buffer
== NULL
)
1609 http
->activity
= time(NULL
);
1615 if (http
->data_encoding
== HTTP_ENCODING_CHUNKED
&&
1616 http
->data_remaining
<= 0)
1618 DEBUG_puts("2httpPeek: Getting chunk length...");
1620 if (httpGets(len
, sizeof(len
), http
) == NULL
)
1622 DEBUG_puts("1httpPeek: Could not get length!");
1628 DEBUG_puts("1httpPeek: Blank chunk length, trying again...");
1629 if (!httpGets(len
, sizeof(len
), http
))
1631 DEBUG_puts("1httpPeek: Could not get chunk length.");
1636 http
->data_remaining
= strtoll(len
, NULL
, 16);
1638 if (http
->data_remaining
< 0)
1640 DEBUG_puts("1httpPeek: Negative chunk length!");
1645 DEBUG_printf(("2httpPeek: data_remaining=" CUPS_LLFMT
,
1646 CUPS_LLCAST http
->data_remaining
));
1648 if (http
->data_remaining
<= 0 && http
->data_encoding
!= HTTP_ENCODING_FIELDS
)
1651 * A zero-length chunk ends a transfer; unless we are reading POST
1656 if (http
->coding
>= _HTTP_CODING_GUNZIP
)
1657 http_content_coding_finish(http
);
1658 #endif /* HAVE_LIBZ */
1660 if (http
->data_encoding
== HTTP_ENCODING_CHUNKED
)
1661 httpGets(len
, sizeof(len
), http
);
1663 if (http
->state
== HTTP_STATE_POST_RECV
)
1666 http
->state
= HTTP_STATE_STATUS
;
1668 DEBUG_printf(("1httpPeek: 0-length chunk, set state to %s.",
1669 httpStateString(http
->state
)));
1672 * Prevent future reads for this request...
1675 http
->data_encoding
= HTTP_ENCODING_FIELDS
;
1679 else if (length
> (size_t)http
->data_remaining
)
1680 length
= (size_t)http
->data_remaining
;
1683 if (http
->used
== 0 &&
1684 (http
->coding
== _HTTP_CODING_IDENTITY
||
1685 (http
->coding
>= _HTTP_CODING_GUNZIP
&& ((z_stream
*)http
->stream
)->avail_in
== 0)))
1687 if (http
->used
== 0)
1688 #endif /* HAVE_LIBZ */
1691 * Buffer small reads for better performance...
1694 ssize_t buflen
; /* Length of read for buffer */
1696 if (!http
->blocking
)
1698 while (!httpWait(http
, http
->wait_value
))
1700 if (http
->timeout_cb
&& (*http
->timeout_cb
)(http
, http
->timeout_data
))
1707 if ((size_t)http
->data_remaining
> sizeof(http
->buffer
))
1708 buflen
= sizeof(http
->buffer
);
1710 buflen
= (ssize_t
)http
->data_remaining
;
1712 DEBUG_printf(("2httpPeek: Reading %d bytes into buffer.", (int)buflen
));
1713 bytes
= http_read(http
, http
->buffer
, (size_t)buflen
);
1715 DEBUG_printf(("2httpPeek: Read " CUPS_LLFMT
" bytes into buffer.",
1716 CUPS_LLCAST bytes
));
1720 http_debug_hex("httpPeek", http
->buffer
, (int)bytes
);
1723 http
->used
= (int)bytes
;
1728 if (http
->coding
>= _HTTP_CODING_GUNZIP
)
1730 # ifdef HAVE_INFLATECOPY
1731 int zerr
; /* Decompressor error */
1732 z_stream stream
; /* Copy of decompressor stream */
1734 if (http
->used
> 0 && ((z_stream
*)http
->stream
)->avail_in
< HTTP_MAX_BUFFER
)
1736 size_t buflen
= HTTP_MAX_BUFFER
- ((z_stream
*)http
->stream
)->avail_in
;
1737 /* Number of bytes to copy */
1739 if (((z_stream
*)http
->stream
)->avail_in
> 0 &&
1740 ((z_stream
*)http
->stream
)->next_in
> http
->sbuffer
)
1741 memmove(http
->sbuffer
, ((z_stream
*)http
->stream
)->next_in
, ((z_stream
*)http
->stream
)->avail_in
);
1743 ((z_stream
*)http
->stream
)->next_in
= http
->sbuffer
;
1745 if (buflen
> (size_t)http
->data_remaining
)
1746 buflen
= (size_t)http
->data_remaining
;
1748 if (buflen
> (size_t)http
->used
)
1749 buflen
= (size_t)http
->used
;
1751 DEBUG_printf(("1httpPeek: Copying %d more bytes of data into "
1752 "decompression buffer.", (int)buflen
));
1754 memcpy(http
->sbuffer
+ ((z_stream
*)http
->stream
)->avail_in
, http
->buffer
, buflen
);
1755 ((z_stream
*)http
->stream
)->avail_in
+= buflen
;
1756 http
->used
-= (int)buflen
;
1757 http
->data_remaining
-= (off_t
)buflen
;
1760 memmove(http
->buffer
, http
->buffer
+ buflen
, (size_t)http
->used
);
1763 DEBUG_printf(("2httpPeek: length=%d, avail_in=%d", (int)length
,
1764 (int)((z_stream
*)http
->stream
)->avail_in
));
1766 if (inflateCopy(&stream
, (z_stream
*)http
->stream
) != Z_OK
)
1768 DEBUG_puts("2httpPeek: Unable to copy decompressor stream.");
1769 http
->error
= ENOMEM
;
1773 stream
.next_out
= (Bytef
*)buffer
;
1774 stream
.avail_out
= (uInt
)length
;
1776 zerr
= inflate(&stream
, Z_SYNC_FLUSH
);
1777 inflateEnd(&stream
);
1781 DEBUG_printf(("2httpPeek: zerr=%d", zerr
));
1783 http_debug_hex("2httpPeek", (char *)http
->sbuffer
, (int)((z_stream
*)http
->stream
)->avail_in
);
1790 bytes
= (ssize_t
)(length
- ((z_stream
*)http
->stream
)->avail_out
);
1793 DEBUG_puts("2httpPeek: No inflateCopy on this platform, httpPeek does not "
1794 "work with compressed streams.");
1796 # endif /* HAVE_INFLATECOPY */
1799 #endif /* HAVE_LIBZ */
1802 if (length
> (size_t)http
->used
)
1803 length
= (size_t)http
->used
;
1805 bytes
= (ssize_t
)length
;
1807 DEBUG_printf(("2httpPeek: grabbing %d bytes from input buffer...",
1810 memcpy(buffer
, http
->buffer
, length
);
1818 if (WSAGetLastError() == WSAEINTR
|| WSAGetLastError() == WSAEWOULDBLOCK
)
1821 http
->error
= WSAGetLastError();
1823 if (errno
== EINTR
|| errno
== EAGAIN
)
1826 http
->error
= errno
;
1829 else if (bytes
== 0)
1831 http
->error
= EPIPE
;
1840 * 'httpPost()' - Send a POST request to the server.
1843 int /* O - Status of call (0 = success) */
1844 httpPost(http_t
*http
, /* I - HTTP connection */
1845 const char *uri
) /* I - URI for post */
1847 return (http_send(http
, HTTP_STATE_POST
, uri
));
1852 * 'httpPrintf()' - Print a formatted string to a HTTP connection.
1857 int /* O - Number of bytes written */
1858 httpPrintf(http_t
*http
, /* I - HTTP connection */
1859 const char *format
, /* I - printf-style format string */
1860 ...) /* I - Additional args as needed */
1862 ssize_t bytes
; /* Number of bytes to write */
1863 char buf
[65536]; /* Buffer for formatted string */
1864 va_list ap
; /* Variable argument pointer */
1867 DEBUG_printf(("2httpPrintf(http=%p, format=\"%s\", ...)", (void *)http
, format
));
1869 va_start(ap
, format
);
1870 bytes
= vsnprintf(buf
, sizeof(buf
), format
, ap
);
1873 DEBUG_printf(("3httpPrintf: (" CUPS_LLFMT
" bytes) %s", CUPS_LLCAST bytes
, buf
));
1875 if (bytes
> (ssize_t
)(sizeof(buf
) - 1))
1877 http
->error
= ENOMEM
;
1880 else if (http
->data_encoding
== HTTP_ENCODING_FIELDS
)
1881 return ((int)httpWrite2(http
, buf
, (size_t)bytes
));
1886 DEBUG_puts("4httpPrintf: flushing existing data...");
1888 if (httpFlushWrite(http
) < 0)
1892 return ((int)http_write(http
, buf
, (size_t)bytes
));
1898 * 'httpPut()' - Send a PUT request to the server.
1901 int /* O - Status of call (0 = success) */
1902 httpPut(http_t
*http
, /* I - HTTP connection */
1903 const char *uri
) /* I - URI to put */
1905 DEBUG_printf(("httpPut(http=%p, uri=\"%s\")", (void *)http
, uri
));
1906 return (http_send(http
, HTTP_STATE_PUT
, uri
));
1911 * 'httpRead()' - Read data from a HTTP connection.
1913 * This function is deprecated. Use the httpRead2() function which can
1914 * read more than 2GB of data.
1916 * @deprecated@ @exclude all@
1919 int /* O - Number of bytes read */
1920 httpRead(http_t
*http
, /* I - HTTP connection */
1921 char *buffer
, /* I - Buffer for data */
1922 int length
) /* I - Maximum number of bytes */
1924 return ((int)httpRead2(http
, buffer
, (size_t)length
));
1929 * 'httpRead2()' - Read data from a HTTP connection.
1931 * @since CUPS 1.2/macOS 10.5@
1934 ssize_t
/* O - Number of bytes read */
1935 httpRead2(http_t
*http
, /* I - HTTP connection */
1936 char *buffer
, /* I - Buffer for data */
1937 size_t length
) /* I - Maximum number of bytes */
1939 ssize_t bytes
; /* Bytes read */
1943 DEBUG_printf(("httpRead2(http=%p, buffer=%p, length=" CUPS_LLFMT
") coding=%d data_encoding=%d data_remaining=" CUPS_LLFMT
, (void *)http
, (void *)buffer
, CUPS_LLCAST length
, http
->coding
, http
->data_encoding
, CUPS_LLCAST http
->data_remaining
));
1945 DEBUG_printf(("httpRead2(http=%p, buffer=%p, length=" CUPS_LLFMT
") data_encoding=%d data_remaining=" CUPS_LLFMT
, (void *)http
, (void *)buffer
, CUPS_LLCAST length
, http
->data_encoding
, CUPS_LLCAST http
->data_remaining
));
1946 #endif /* HAVE_LIBZ */
1948 if (http
== NULL
|| buffer
== NULL
)
1951 http
->activity
= time(NULL
);
1958 if (http
->coding
>= _HTTP_CODING_GUNZIP
)
1962 if (((z_stream
*)http
->stream
)->avail_in
> 0)
1964 int zerr
; /* Decompressor error */
1966 DEBUG_printf(("2httpRead2: avail_in=%d, avail_out=%d",
1967 (int)((z_stream
*)http
->stream
)->avail_in
, (int)length
));
1969 ((z_stream
*)http
->stream
)->next_out
= (Bytef
*)buffer
;
1970 ((z_stream
*)http
->stream
)->avail_out
= (uInt
)length
;
1972 if ((zerr
= inflate((z_stream
*)http
->stream
, Z_SYNC_FLUSH
)) < Z_OK
)
1974 DEBUG_printf(("2httpRead2: zerr=%d", zerr
));
1976 http_debug_hex("2httpRead2", (char *)http
->sbuffer
, (int)((z_stream
*)http
->stream
)->avail_in
);
1983 bytes
= (ssize_t
)(length
- ((z_stream
*)http
->stream
)->avail_out
);
1985 DEBUG_printf(("2httpRead2: avail_in=%d, avail_out=%d, bytes=%d",
1986 ((z_stream
*)http
->stream
)->avail_in
, ((z_stream
*)http
->stream
)->avail_out
,
1994 ssize_t buflen
= HTTP_MAX_BUFFER
- (ssize_t
)((z_stream
*)http
->stream
)->avail_in
;
1995 /* Additional bytes for buffer */
1999 if (((z_stream
*)http
->stream
)->avail_in
> 0 &&
2000 ((z_stream
*)http
->stream
)->next_in
> http
->sbuffer
)
2001 memmove(http
->sbuffer
, ((z_stream
*)http
->stream
)->next_in
, ((z_stream
*)http
->stream
)->avail_in
);
2003 ((z_stream
*)http
->stream
)->next_in
= http
->sbuffer
;
2005 DEBUG_printf(("1httpRead2: Reading up to %d more bytes of data into "
2006 "decompression buffer.", (int)buflen
));
2008 if (http
->data_remaining
> 0)
2010 if (buflen
> http
->data_remaining
)
2011 buflen
= (ssize_t
)http
->data_remaining
;
2013 bytes
= http_read_buffered(http
, (char *)http
->sbuffer
+ ((z_stream
*)http
->stream
)->avail_in
, (size_t)buflen
);
2015 else if (http
->data_encoding
== HTTP_ENCODING_CHUNKED
)
2016 bytes
= http_read_chunk(http
, (char *)http
->sbuffer
+ ((z_stream
*)http
->stream
)->avail_in
, (size_t)buflen
);
2022 else if (bytes
== 0)
2025 DEBUG_printf(("1httpRead2: Adding " CUPS_LLFMT
" bytes to "
2026 "decompression buffer.", CUPS_LLCAST bytes
));
2028 http
->data_remaining
-= bytes
;
2029 ((z_stream
*)http
->stream
)->avail_in
+= (uInt
)bytes
;
2031 if (http
->data_remaining
<= 0 &&
2032 http
->data_encoding
== HTTP_ENCODING_CHUNKED
)
2035 * Read the trailing blank line now...
2038 char len
[32]; /* Length string */
2040 httpGets(len
, sizeof(len
), http
);
2052 #endif /* HAVE_LIBZ */
2053 if (http
->data_remaining
== 0 && http
->data_encoding
== HTTP_ENCODING_CHUNKED
)
2055 if ((bytes
= http_read_chunk(http
, buffer
, length
)) > 0)
2057 http
->data_remaining
-= bytes
;
2059 if (http
->data_remaining
<= 0)
2062 * Read the trailing blank line now...
2065 char len
[32]; /* Length string */
2067 httpGets(len
, sizeof(len
), http
);
2071 else if (http
->data_remaining
<= 0)
2074 * No more data to read...
2081 DEBUG_printf(("1httpRead2: Reading up to %d bytes into buffer.",
2084 if (length
> (size_t)http
->data_remaining
)
2085 length
= (size_t)http
->data_remaining
;
2087 if ((bytes
= http_read_buffered(http
, buffer
, length
)) > 0)
2089 http
->data_remaining
-= bytes
;
2091 if (http
->data_remaining
<= 0 &&
2092 http
->data_encoding
== HTTP_ENCODING_CHUNKED
)
2095 * Read the trailing blank line now...
2098 char len
[32]; /* Length string */
2100 httpGets(len
, sizeof(len
), http
);
2107 (http
->coding
== _HTTP_CODING_IDENTITY
||
2108 (http
->coding
>= _HTTP_CODING_GUNZIP
&& ((z_stream
*)http
->stream
)->avail_in
== 0)) &&
2109 #endif /* HAVE_LIBZ */
2110 ((http
->data_remaining
<= 0 &&
2111 http
->data_encoding
== HTTP_ENCODING_LENGTH
) ||
2112 (http
->data_encoding
== HTTP_ENCODING_CHUNKED
&& bytes
== 0)))
2115 if (http
->coding
>= _HTTP_CODING_GUNZIP
)
2116 http_content_coding_finish(http
);
2117 #endif /* HAVE_LIBZ */
2119 if (http
->state
== HTTP_STATE_POST_RECV
)
2121 else if (http
->state
== HTTP_STATE_GET_SEND
||
2122 http
->state
== HTTP_STATE_POST_SEND
)
2123 http
->state
= HTTP_STATE_WAITING
;
2125 http
->state
= HTTP_STATE_STATUS
;
2127 DEBUG_printf(("1httpRead2: End of content, set state to %s.",
2128 httpStateString(http
->state
)));
2136 * 'httpReadRequest()' - Read a HTTP request from a connection.
2138 * @since CUPS 1.7/macOS 10.9@
2141 http_state_t
/* O - New state of connection */
2142 httpReadRequest(http_t
*http
, /* I - HTTP connection */
2143 char *uri
, /* I - URI buffer */
2144 size_t urilen
) /* I - Size of URI buffer */
2146 char line
[4096], /* HTTP request line */
2147 *req_method
, /* HTTP request method */
2148 *req_uri
, /* HTTP request URI */
2149 *req_version
; /* HTTP request version number string */
2153 * Range check input...
2156 DEBUG_printf(("httpReadRequest(http=%p, uri=%p, urilen=" CUPS_LLFMT
")", (void *)http
, (void *)uri
, CUPS_LLCAST urilen
));
2161 if (!http
|| !uri
|| urilen
< 1)
2163 DEBUG_puts("1httpReadRequest: Bad arguments, returning HTTP_STATE_ERROR.");
2164 return (HTTP_STATE_ERROR
);
2166 else if (http
->state
!= HTTP_STATE_WAITING
)
2168 DEBUG_printf(("1httpReadRequest: Bad state %s, returning HTTP_STATE_ERROR.",
2169 httpStateString(http
->state
)));
2170 return (HTTP_STATE_ERROR
);
2177 httpClearFields(http
);
2179 http
->activity
= time(NULL
);
2180 http
->data_encoding
= HTTP_ENCODING_FIELDS
;
2181 http
->data_remaining
= 0;
2182 http
->keep_alive
= HTTP_KEEPALIVE_OFF
;
2183 http
->status
= HTTP_STATUS_OK
;
2184 http
->version
= HTTP_VERSION_1_1
;
2187 * Read a line from the socket...
2190 if (!httpGets(line
, sizeof(line
), http
))
2192 DEBUG_puts("1httpReadRequest: Unable to read, returning HTTP_STATE_ERROR");
2193 return (HTTP_STATE_ERROR
);
2198 DEBUG_puts("1httpReadRequest: Blank line, returning HTTP_STATE_WAITING");
2199 return (HTTP_STATE_WAITING
);
2202 DEBUG_printf(("1httpReadRequest: %s", line
));
2211 while (*req_uri
&& !isspace(*req_uri
& 255))
2216 DEBUG_puts("1httpReadRequest: No request URI.");
2217 _cupsSetError(IPP_STATUS_ERROR_INTERNAL
, _("No request URI."), 1);
2218 return (HTTP_STATE_ERROR
);
2223 while (*req_uri
&& isspace(*req_uri
& 255))
2226 req_version
= req_uri
;
2228 while (*req_version
&& !isspace(*req_version
& 255))
2233 DEBUG_puts("1httpReadRequest: No request protocol version.");
2234 _cupsSetError(IPP_STATUS_ERROR_INTERNAL
, _("No request protocol version."), 1);
2235 return (HTTP_STATE_ERROR
);
2238 *req_version
++ = '\0';
2240 while (*req_version
&& isspace(*req_version
& 255))
2247 if (!strcmp(req_method
, "OPTIONS"))
2248 http
->state
= HTTP_STATE_OPTIONS
;
2249 else if (!strcmp(req_method
, "GET"))
2250 http
->state
= HTTP_STATE_GET
;
2251 else if (!strcmp(req_method
, "HEAD"))
2252 http
->state
= HTTP_STATE_HEAD
;
2253 else if (!strcmp(req_method
, "POST"))
2254 http
->state
= HTTP_STATE_POST
;
2255 else if (!strcmp(req_method
, "PUT"))
2256 http
->state
= HTTP_STATE_PUT
;
2257 else if (!strcmp(req_method
, "DELETE"))
2258 http
->state
= HTTP_STATE_DELETE
;
2259 else if (!strcmp(req_method
, "TRACE"))
2260 http
->state
= HTTP_STATE_TRACE
;
2261 else if (!strcmp(req_method
, "CONNECT"))
2262 http
->state
= HTTP_STATE_CONNECT
;
2265 DEBUG_printf(("1httpReadRequest: Unknown method \"%s\".", req_method
));
2266 _cupsSetError(IPP_STATUS_ERROR_INTERNAL
, _("Unknown request method."), 1);
2267 return (HTTP_STATE_UNKNOWN_METHOD
);
2270 DEBUG_printf(("1httpReadRequest: Set state to %s.",
2271 httpStateString(http
->state
)));
2273 if (!strcmp(req_version
, "HTTP/1.0"))
2275 http
->version
= HTTP_VERSION_1_0
;
2276 http
->keep_alive
= HTTP_KEEPALIVE_OFF
;
2278 else if (!strcmp(req_version
, "HTTP/1.1"))
2280 http
->version
= HTTP_VERSION_1_1
;
2281 http
->keep_alive
= HTTP_KEEPALIVE_ON
;
2285 DEBUG_printf(("1httpReadRequest: Unknown version \"%s\".", req_version
));
2286 _cupsSetError(IPP_STATUS_ERROR_INTERNAL
, _("Unknown request version."), 1);
2287 return (HTTP_STATE_UNKNOWN_VERSION
);
2290 DEBUG_printf(("1httpReadRequest: URI is \"%s\".", req_uri
));
2291 strlcpy(uri
, req_uri
, urilen
);
2293 return (http
->state
);
2298 * 'httpReconnect()' - Reconnect to a HTTP server.
2300 * This function is deprecated. Please use the @link httpReconnect2@ function
2303 * @deprecated@ @exclude all@
2306 int /* O - 0 on success, non-zero on failure */
2307 httpReconnect(http_t
*http
) /* I - HTTP connection */
2309 DEBUG_printf(("httpReconnect(http=%p)", (void *)http
));
2311 return (httpReconnect2(http
, 30000, NULL
));
2316 * 'httpReconnect2()' - Reconnect to a HTTP server with timeout and optional
2320 int /* O - 0 on success, non-zero on failure */
2321 httpReconnect2(http_t
*http
, /* I - HTTP connection */
2322 int msec
, /* I - Timeout in milliseconds */
2323 int *cancel
) /* I - Pointer to "cancel" variable */
2325 http_addrlist_t
*addr
; /* Connected address */
2327 http_addrlist_t
*current
; /* Current address */
2328 char temp
[256]; /* Temporary address string */
2332 DEBUG_printf(("httpReconnect2(http=%p, msec=%d, cancel=%p)", (void *)http
, msec
, (void *)cancel
));
2336 _cupsSetError(IPP_STATUS_ERROR_INTERNAL
, strerror(EINVAL
), 0);
2343 DEBUG_puts("2httpReconnect2: Shutting down SSL/TLS...");
2346 #endif /* HAVE_SSL */
2349 * Close any previously open socket...
2354 DEBUG_printf(("2httpReconnect2: Closing socket %d...", http
->fd
));
2356 httpAddrClose(NULL
, http
->fd
);
2362 * Reset all state (except fields, which may be reused)...
2365 http
->state
= HTTP_STATE_WAITING
;
2366 http
->version
= HTTP_VERSION_1_1
;
2367 http
->keep_alive
= HTTP_KEEPALIVE_OFF
;
2368 memset(&http
->_hostaddr
, 0, sizeof(http
->_hostaddr
));
2369 http
->data_encoding
= HTTP_ENCODING_FIELDS
;
2370 http
->_data_remaining
= 0;
2372 http
->data_remaining
= 0;
2373 http
->hostaddr
= NULL
;
2377 * Connect to the server...
2381 for (current
= http
->addrlist
; current
; current
= current
->next
)
2382 DEBUG_printf(("2httpReconnect2: Address %s:%d",
2383 httpAddrString(&(current
->addr
), temp
, sizeof(temp
)),
2384 httpAddrPort(&(current
->addr
))));
2387 if ((addr
= httpAddrConnect2(http
->addrlist
, &(http
->fd
), msec
, cancel
)) == NULL
)
2390 * Unable to connect...
2394 http
->error
= WSAGetLastError();
2396 http
->error
= errno
;
2398 http
->status
= HTTP_STATUS_ERROR
;
2400 DEBUG_printf(("1httpReconnect2: httpAddrConnect failed: %s",
2401 strerror(http
->error
)));
2406 DEBUG_printf(("2httpReconnect2: New socket=%d", http
->fd
));
2408 if (http
->timeout_value
> 0)
2409 http_set_timeout(http
->fd
, http
->timeout_value
);
2411 http
->hostaddr
= &(addr
->addr
);
2415 if (http
->encryption
== HTTP_ENCRYPTION_ALWAYS
)
2418 * Always do encryption via SSL.
2421 if (_httpTLSStart(http
) != 0)
2423 httpAddrClose(NULL
, http
->fd
);
2429 else if (http
->encryption
== HTTP_ENCRYPTION_REQUIRED
&& !http
->tls_upgrade
)
2430 return (http_tls_upgrade(http
));
2431 #endif /* HAVE_SSL */
2433 DEBUG_printf(("1httpReconnect2: Connected to %s:%d...",
2434 httpAddrString(http
->hostaddr
, temp
, sizeof(temp
)),
2435 httpAddrPort(http
->hostaddr
)));
2442 * 'httpSetAuthString()' - Set the current authorization string.
2444 * This function just stores a copy of the current authorization string in
2445 * the HTTP connection object. You must still call @link httpSetField@ to set
2446 * @code HTTP_FIELD_AUTHORIZATION@ prior to issuing a HTTP request using
2447 * @link httpGet@, @link httpHead@, @link httpOptions@, @link httpPost@, or
2450 * @since CUPS 1.3/macOS 10.5@
2454 httpSetAuthString(http_t
*http
, /* I - HTTP connection */
2455 const char *scheme
, /* I - Auth scheme (NULL to clear it) */
2456 const char *data
) /* I - Auth data (NULL for none) */
2459 * Range check input...
2465 if (http
->authstring
&& http
->authstring
!= http
->_authstring
)
2466 free(http
->authstring
);
2468 http
->authstring
= http
->_authstring
;
2473 * Set the current authorization string...
2476 size_t len
= strlen(scheme
) + (data
? strlen(data
) + 1 : 0) + 1;
2479 if (len
> sizeof(http
->_authstring
))
2481 if ((temp
= malloc(len
)) == NULL
)
2482 len
= sizeof(http
->_authstring
);
2484 http
->authstring
= temp
;
2488 snprintf(http
->authstring
, len
, "%s %s", scheme
, data
);
2490 strlcpy(http
->authstring
, scheme
, len
);
2495 * Clear the current authorization string...
2498 http
->_authstring
[0] = '\0';
2504 * 'httpSetCredentials()' - Set the credentials associated with an encrypted
2507 * @since CUPS 1.5/macOS 10.7@
2510 int /* O - Status of call (0 = success) */
2511 httpSetCredentials(http_t
*http
, /* I - HTTP connection */
2512 cups_array_t
*credentials
) /* I - Array of credentials */
2514 if (!http
|| cupsArrayCount(credentials
) < 1)
2518 _httpFreeCredentials(http
->tls_credentials
);
2520 http
->tls_credentials
= _httpCreateCredentials(credentials
);
2521 #endif /* HAVE_SSL */
2523 return (http
->tls_credentials
? 0 : -1);
2528 * 'httpSetCookie()' - Set the cookie value(s).
2530 * @since CUPS 1.1.19/macOS 10.3@
2534 httpSetCookie(http_t
*http
, /* I - Connection */
2535 const char *cookie
) /* I - Cookie string */
2544 http
->cookie
= strdup(cookie
);
2546 http
->cookie
= NULL
;
2551 * 'httpSetDefaultField()' - Set the default value of an HTTP header.
2553 * Currently only @code HTTP_FIELD_ACCEPT_ENCODING@, @code HTTP_FIELD_SERVER@,
2554 * and @code HTTP_FIELD_USER_AGENT@ can be set.
2556 * @since CUPS 1.7/macOS 10.9@
2560 httpSetDefaultField(http_t
*http
, /* I - HTTP connection */
2561 http_field_t field
, /* I - Field index */
2562 const char *value
)/* I - Value */
2564 DEBUG_printf(("httpSetDefaultField(http=%p, field=%d(%s), value=\"%s\")", (void *)http
, field
, http_fields
[field
], value
));
2566 if (!http
|| field
<= HTTP_FIELD_UNKNOWN
|| field
>= HTTP_FIELD_MAX
)
2569 if (http
->default_fields
[field
])
2570 free(http
->default_fields
[field
]);
2572 http
->default_fields
[field
] = value
? strdup(value
) : NULL
;
2577 * 'httpSetExpect()' - Set the Expect: header in a request.
2579 * Currently only @code HTTP_STATUS_CONTINUE@ is supported for the "expect"
2582 * @since CUPS 1.2/macOS 10.5@
2586 httpSetExpect(http_t
*http
, /* I - HTTP connection */
2587 http_status_t expect
) /* I - HTTP status to expect
2588 (@code HTTP_STATUS_CONTINUE@) */
2590 DEBUG_printf(("httpSetExpect(http=%p, expect=%d)", (void *)http
, expect
));
2593 http
->expect
= expect
;
2598 * 'httpSetField()' - Set the value of an HTTP header.
2602 httpSetField(http_t
*http
, /* I - HTTP connection */
2603 http_field_t field
, /* I - Field index */
2604 const char *value
) /* I - Value */
2606 DEBUG_printf(("httpSetField(http=%p, field=%d(%s), value=\"%s\")", (void *)http
, field
, http_fields
[field
], value
));
2608 if (!http
|| field
<= HTTP_FIELD_UNKNOWN
|| field
>= HTTP_FIELD_MAX
|| !value
)
2611 http_add_field(http
, field
, value
, 0);
2616 * 'httpSetKeepAlive()' - Set the current Keep-Alive state of a connection.
2618 * @since CUPS 2.0/OS 10.10@
2623 http_t
*http
, /* I - HTTP connection */
2624 http_keepalive_t keep_alive
) /* I - New Keep-Alive value */
2627 http
->keep_alive
= keep_alive
;
2632 * 'httpSetLength()' - Set the content-length and content-encoding.
2634 * @since CUPS 1.2/macOS 10.5@
2638 httpSetLength(http_t
*http
, /* I - HTTP connection */
2639 size_t length
) /* I - Length (0 for chunked) */
2641 DEBUG_printf(("httpSetLength(http=%p, length=" CUPS_LLFMT
")", (void *)http
, CUPS_LLCAST length
));
2648 httpSetField(http
, HTTP_FIELD_TRANSFER_ENCODING
, "chunked");
2649 httpSetField(http
, HTTP_FIELD_CONTENT_LENGTH
, "");
2653 char len
[32]; /* Length string */
2656 snprintf(len
, sizeof(len
), CUPS_LLFMT
, CUPS_LLCAST length
);
2657 httpSetField(http
, HTTP_FIELD_TRANSFER_ENCODING
, "");
2658 httpSetField(http
, HTTP_FIELD_CONTENT_LENGTH
, len
);
2664 * 'httpSetTimeout()' - Set read/write timeouts and an optional callback.
2666 * The optional timeout callback receives both the HTTP connection and a user
2667 * data pointer and must return 1 to continue or 0 to error (time) out.
2669 * @since CUPS 1.5/macOS 10.7@
2674 http_t
*http
, /* I - HTTP connection */
2675 double timeout
, /* I - Number of seconds for timeout,
2676 must be greater than 0 */
2677 http_timeout_cb_t cb
, /* I - Callback function or @code NULL@ */
2678 void *user_data
) /* I - User data pointer */
2680 if (!http
|| timeout
<= 0.0)
2683 http
->timeout_cb
= cb
;
2684 http
->timeout_data
= user_data
;
2685 http
->timeout_value
= timeout
;
2688 http_set_timeout(http
->fd
, timeout
);
2690 http_set_wait(http
);
2695 * 'httpShutdown()' - Shutdown one side of an HTTP connection.
2697 * @since CUPS 2.0/OS 10.10@
2701 httpShutdown(http_t
*http
) /* I - HTTP connection */
2703 if (!http
|| http
->fd
< 0)
2709 #endif /* HAVE_SSL */
2712 shutdown(http
->fd
, SD_RECEIVE
); /* Microsoft-ism... */
2714 shutdown(http
->fd
, SHUT_RD
);
2720 * 'httpTrace()' - Send an TRACE request to the server.
2725 int /* O - Status of call (0 = success) */
2726 httpTrace(http_t
*http
, /* I - HTTP connection */
2727 const char *uri
) /* I - URI for trace */
2729 return (http_send(http
, HTTP_STATE_TRACE
, uri
));
2734 * '_httpUpdate()' - Update the current HTTP status for incoming data.
2736 * Note: Unlike httpUpdate(), this function does not flush pending write data
2737 * and only retrieves a single status line from the HTTP connection.
2740 int /* O - 1 to continue, 0 to stop */
2741 _httpUpdate(http_t
*http
, /* I - HTTP connection */
2742 http_status_t
*status
) /* O - Current HTTP status */
2744 char line
[32768], /* Line from connection... */
2745 *value
; /* Pointer to value on line */
2746 http_field_t field
; /* Field index */
2747 int major
, minor
; /* HTTP version numbers */
2750 DEBUG_printf(("_httpUpdate(http=%p, status=%p), state=%s", (void *)http
, (void *)status
, httpStateString(http
->state
)));
2753 * Grab a single line from the connection...
2756 if (!httpGets(line
, sizeof(line
), http
))
2758 *status
= HTTP_STATUS_ERROR
;
2762 DEBUG_printf(("2_httpUpdate: Got \"%s\"", line
));
2764 if (line
[0] == '\0')
2767 * Blank line means the start of the data section (if any). Return
2768 * the result code, too...
2770 * If we get status 100 (HTTP_STATUS_CONTINUE), then we *don't* change
2771 * states. Instead, we just return HTTP_STATUS_CONTINUE to the caller and
2775 if (http
->status
== HTTP_STATUS_CONTINUE
)
2777 *status
= http
->status
;
2781 if (http
->status
< HTTP_STATUS_BAD_REQUEST
)
2782 http
->digest_tries
= 0;
2785 if (http
->status
== HTTP_STATUS_SWITCHING_PROTOCOLS
&& !http
->tls
)
2787 if (_httpTLSStart(http
) != 0)
2789 httpAddrClose(NULL
, http
->fd
);
2792 *status
= http
->status
= HTTP_STATUS_ERROR
;
2796 *status
= HTTP_STATUS_CONTINUE
;
2799 #endif /* HAVE_SSL */
2801 if (http_set_length(http
) < 0)
2803 DEBUG_puts("1_httpUpdate: Bad Content-Length.");
2804 http
->error
= EINVAL
;
2805 http
->status
= *status
= HTTP_STATUS_ERROR
;
2809 switch (http
->state
)
2811 case HTTP_STATE_GET
:
2812 case HTTP_STATE_POST
:
2813 case HTTP_STATE_POST_RECV
:
2814 case HTTP_STATE_PUT
:
2817 DEBUG_printf(("1_httpUpdate: Set state to %s.",
2818 httpStateString(http
->state
)));
2820 case HTTP_STATE_POST_SEND
:
2821 case HTTP_STATE_HEAD
:
2825 http
->state
= HTTP_STATE_WAITING
;
2827 DEBUG_puts("1_httpUpdate: Reset state to HTTP_STATE_WAITING.");
2832 DEBUG_puts("1_httpUpdate: Calling http_content_coding_start.");
2833 http_content_coding_start(http
,
2834 httpGetField(http
, HTTP_FIELD_CONTENT_ENCODING
));
2835 #endif /* HAVE_LIBZ */
2837 *status
= http
->status
;
2840 else if (!strncmp(line
, "HTTP/", 5) && http
->mode
== _HTTP_MODE_CLIENT
)
2843 * Got the beginning of a response...
2846 int intstatus
; /* Status value as an integer */
2848 if (sscanf(line
, "HTTP/%d.%d%d", &major
, &minor
, &intstatus
) != 3)
2850 *status
= http
->status
= HTTP_STATUS_ERROR
;
2854 httpClearFields(http
);
2856 http
->version
= (http_version_t
)(major
* 100 + minor
);
2857 *status
= http
->status
= (http_status_t
)intstatus
;
2859 else if ((value
= strchr(line
, ':')) != NULL
)
2866 while (_cups_isspace(*value
))
2869 DEBUG_printf(("1_httpUpdate: Header %s: %s", line
, value
));
2872 * Be tolerants of servers that send unknown attribute fields...
2875 if (!_cups_strcasecmp(line
, "expect"))
2878 * "Expect: 100-continue" or similar...
2881 http
->expect
= (http_status_t
)atoi(value
);
2883 else if (!_cups_strcasecmp(line
, "cookie"))
2886 * "Cookie: name=value[; name=value ...]" - replaces previous cookies...
2889 httpSetCookie(http
, value
);
2891 else if ((field
= httpFieldValue(line
)) != HTTP_FIELD_UNKNOWN
)
2893 http_add_field(http
, field
, value
, 1);
2895 if (field
== HTTP_FIELD_AUTHENTICATION_INFO
)
2896 httpGetSubField2(http
, HTTP_FIELD_AUTHENTICATION_INFO
, "nextnonce", http
->nextnonce
, (int)sizeof(http
->nextnonce
));
2900 DEBUG_printf(("1_httpUpdate: unknown field %s seen!", line
));
2905 DEBUG_printf(("1_httpUpdate: Bad response line \"%s\"!", line
));
2906 http
->error
= EINVAL
;
2907 http
->status
= *status
= HTTP_STATUS_ERROR
;
2916 * 'httpUpdate()' - Update the current HTTP state for incoming data.
2919 http_status_t
/* O - HTTP status */
2920 httpUpdate(http_t
*http
) /* I - HTTP connection */
2922 http_status_t status
; /* Request status */
2925 DEBUG_printf(("httpUpdate(http=%p), state=%s", (void *)http
, httpStateString(http
->state
)));
2928 * Flush pending data, if any...
2933 DEBUG_puts("2httpUpdate: flushing buffer...");
2935 if (httpFlushWrite(http
) < 0)
2936 return (HTTP_STATUS_ERROR
);
2940 * If we haven't issued any commands, then there is nothing to "update"...
2943 if (http
->state
== HTTP_STATE_WAITING
)
2944 return (HTTP_STATUS_CONTINUE
);
2947 * Grab all of the lines we can from the connection...
2950 while (_httpUpdate(http
, &status
));
2953 * See if there was an error...
2956 if (http
->error
== EPIPE
&& http
->status
> HTTP_STATUS_CONTINUE
)
2958 DEBUG_printf(("1httpUpdate: Returning status %d...", http
->status
));
2959 return (http
->status
);
2964 DEBUG_printf(("1httpUpdate: socket error %d - %s", http
->error
,
2965 strerror(http
->error
)));
2966 http
->status
= HTTP_STATUS_ERROR
;
2967 return (HTTP_STATUS_ERROR
);
2971 * Return the current status...
2979 * '_httpWait()' - Wait for data available on a connection (no flush).
2982 int /* O - 1 if data is available, 0 otherwise */
2983 _httpWait(http_t
*http
, /* I - HTTP connection */
2984 int msec
, /* I - Milliseconds to wait */
2985 int usessl
) /* I - Use SSL context? */
2988 struct pollfd pfd
; /* Polled file descriptor */
2990 fd_set input_set
; /* select() input set */
2991 struct timeval timeout
; /* Timeout */
2992 #endif /* HAVE_POLL */
2993 int nfds
; /* Result from select()/poll() */
2996 DEBUG_printf(("4_httpWait(http=%p, msec=%d, usessl=%d)", (void *)http
, msec
, usessl
));
3000 DEBUG_printf(("5_httpWait: Returning 0 since fd=%d", http
->fd
));
3005 * Check the SSL/TLS buffers for data first...
3009 if (http
->tls
&& _httpTLSPending(http
))
3011 DEBUG_puts("5_httpWait: Return 1 since there is pending TLS data.");
3014 #endif /* HAVE_SSL */
3017 * Then try doing a select() or poll() to poll the socket...
3022 pfd
.events
= POLLIN
;
3026 nfds
= poll(&pfd
, 1, msec
);
3028 while (nfds
< 0 && (errno
== EINTR
|| errno
== EAGAIN
));
3033 FD_ZERO(&input_set
);
3034 FD_SET(http
->fd
, &input_set
);
3036 DEBUG_printf(("6_httpWait: msec=%d, http->fd=%d", msec
, http
->fd
));
3040 timeout
.tv_sec
= msec
/ 1000;
3041 timeout
.tv_usec
= (msec
% 1000) * 1000;
3043 nfds
= select(http
->fd
+ 1, &input_set
, NULL
, NULL
, &timeout
);
3046 nfds
= select(http
->fd
+ 1, &input_set
, NULL
, NULL
, NULL
);
3048 DEBUG_printf(("6_httpWait: select() returned %d...", nfds
));
3051 while (nfds
< 0 && (WSAGetLastError() == WSAEINTR
||
3052 WSAGetLastError() == WSAEWOULDBLOCK
));
3054 while (nfds
< 0 && (errno
== EINTR
|| errno
== EAGAIN
));
3055 # endif /* _WIN32 */
3056 #endif /* HAVE_POLL */
3058 DEBUG_printf(("5_httpWait: returning with nfds=%d, errno=%d...", nfds
,
3066 * 'httpWait()' - Wait for data available on a connection.
3068 * @since CUPS 1.1.19/macOS 10.3@
3071 int /* O - 1 if data is available, 0 otherwise */
3072 httpWait(http_t
*http
, /* I - HTTP connection */
3073 int msec
) /* I - Milliseconds to wait */
3076 * First see if there is data in the buffer...
3079 DEBUG_printf(("2httpWait(http=%p, msec=%d)", (void *)http
, msec
));
3086 DEBUG_puts("3httpWait: Returning 1 since there is buffered data ready.");
3091 if (http
->coding
>= _HTTP_CODING_GUNZIP
&& ((z_stream
*)http
->stream
)->avail_in
> 0)
3093 DEBUG_puts("3httpWait: Returning 1 since there is buffered data ready.");
3096 #endif /* HAVE_LIBZ */
3099 * Flush pending data, if any...
3104 DEBUG_puts("3httpWait: Flushing write buffer.");
3106 if (httpFlushWrite(http
) < 0)
3111 * If not, check the SSL/TLS buffers and do a select() on the connection...
3114 return (_httpWait(http
, msec
, 1));
3119 * 'httpWrite()' - Write data to a HTTP connection.
3121 * This function is deprecated. Use the httpWrite2() function which can
3122 * write more than 2GB of data.
3124 * @deprecated@ @exclude all@
3127 int /* O - Number of bytes written */
3128 httpWrite(http_t
*http
, /* I - HTTP connection */
3129 const char *buffer
, /* I - Buffer for data */
3130 int length
) /* I - Number of bytes to write */
3132 return ((int)httpWrite2(http
, buffer
, (size_t)length
));
3137 * 'httpWrite2()' - Write data to a HTTP connection.
3139 * @since CUPS 1.2/macOS 10.5@
3142 ssize_t
/* O - Number of bytes written */
3143 httpWrite2(http_t
*http
, /* I - HTTP connection */
3144 const char *buffer
, /* I - Buffer for data */
3145 size_t length
) /* I - Number of bytes to write */
3147 ssize_t bytes
; /* Bytes written */
3150 DEBUG_printf(("httpWrite2(http=%p, buffer=%p, length=" CUPS_LLFMT
")", (void *)http
, (void *)buffer
, CUPS_LLCAST length
));
3153 * Range check input...
3156 if (!http
|| !buffer
)
3158 DEBUG_puts("1httpWrite2: Returning -1 due to bad input.");
3163 * Mark activity on the connection...
3166 http
->activity
= time(NULL
);
3169 * Buffer small writes for better performance...
3173 if (http
->coding
== _HTTP_CODING_GZIP
|| http
->coding
== _HTTP_CODING_DEFLATE
)
3175 DEBUG_printf(("1httpWrite2: http->coding=%d", http
->coding
));
3179 http_content_coding_finish(http
);
3184 size_t slen
; /* Bytes to write */
3185 ssize_t sret
; /* Bytes written */
3187 ((z_stream
*)http
->stream
)->next_in
= (Bytef
*)buffer
;
3188 ((z_stream
*)http
->stream
)->avail_in
= (uInt
)length
;
3190 while (deflate((z_stream
*)http
->stream
, Z_NO_FLUSH
) == Z_OK
)
3192 DEBUG_printf(("1httpWrite2: avail_out=%d", ((z_stream
*)http
->stream
)->avail_out
));
3194 if (((z_stream
*)http
->stream
)->avail_out
> 0)
3197 slen
= _HTTP_MAX_SBUFFER
- ((z_stream
*)http
->stream
)->avail_out
;
3199 DEBUG_printf(("1httpWrite2: Writing intermediate chunk, len=%d", (int)slen
));
3201 if (slen
> 0 && http
->data_encoding
== HTTP_ENCODING_CHUNKED
)
3202 sret
= http_write_chunk(http
, (char *)http
->sbuffer
, slen
);
3204 sret
= http_write(http
, (char *)http
->sbuffer
, slen
);
3210 DEBUG_puts("1httpWrite2: Unable to write, returning -1.");
3214 ((z_stream
*)http
->stream
)->next_out
= (Bytef
*)http
->sbuffer
;
3215 ((z_stream
*)http
->stream
)->avail_out
= (uInt
)_HTTP_MAX_SBUFFER
;
3218 bytes
= (ssize_t
)length
;
3222 #endif /* HAVE_LIBZ */
3225 if (http
->wused
&& (length
+ (size_t)http
->wused
) > sizeof(http
->wbuffer
))
3227 DEBUG_printf(("2httpWrite2: Flushing buffer (wused=%d, length="
3228 CUPS_LLFMT
")", http
->wused
, CUPS_LLCAST length
));
3230 httpFlushWrite(http
);
3233 if ((length
+ (size_t)http
->wused
) <= sizeof(http
->wbuffer
) && length
< sizeof(http
->wbuffer
))
3236 * Write to buffer...
3239 DEBUG_printf(("2httpWrite2: Copying " CUPS_LLFMT
" bytes to wbuffer...",
3240 CUPS_LLCAST length
));
3242 memcpy(http
->wbuffer
+ http
->wused
, buffer
, length
);
3243 http
->wused
+= (int)length
;
3244 bytes
= (ssize_t
)length
;
3249 * Otherwise write the data directly...
3252 DEBUG_printf(("2httpWrite2: Writing " CUPS_LLFMT
" bytes to socket...",
3253 CUPS_LLCAST length
));
3255 if (http
->data_encoding
== HTTP_ENCODING_CHUNKED
)
3256 bytes
= (ssize_t
)http_write_chunk(http
, buffer
, length
);
3258 bytes
= (ssize_t
)http_write(http
, buffer
, length
);
3260 DEBUG_printf(("2httpWrite2: Wrote " CUPS_LLFMT
" bytes...",
3261 CUPS_LLCAST bytes
));
3264 if (http
->data_encoding
== HTTP_ENCODING_LENGTH
)
3265 http
->data_remaining
-= bytes
;
3271 * Handle end-of-request processing...
3274 if ((http
->data_encoding
== HTTP_ENCODING_CHUNKED
&& length
== 0) ||
3275 (http
->data_encoding
== HTTP_ENCODING_LENGTH
&& http
->data_remaining
== 0))
3278 * Finished with the transfer; unless we are sending POST or PUT
3283 if (http
->coding
== _HTTP_CODING_GZIP
|| http
->coding
== _HTTP_CODING_DEFLATE
)
3284 http_content_coding_finish(http
);
3285 #endif /* HAVE_LIBZ */
3289 if (httpFlushWrite(http
) < 0)
3293 if (http
->data_encoding
== HTTP_ENCODING_CHUNKED
)
3296 * Send a 0-length chunk at the end of the request...
3299 http_write(http
, "0\r\n\r\n", 5);
3302 * Reset the data state...
3305 http
->data_encoding
= HTTP_ENCODING_FIELDS
;
3306 http
->data_remaining
= 0;
3309 if (http
->state
== HTTP_STATE_POST_RECV
)
3311 else if (http
->state
== HTTP_STATE_POST_SEND
||
3312 http
->state
== HTTP_STATE_GET_SEND
)
3313 http
->state
= HTTP_STATE_WAITING
;
3315 http
->state
= HTTP_STATE_STATUS
;
3317 DEBUG_printf(("2httpWrite2: Changed state to %s.",
3318 httpStateString(http
->state
)));
3321 DEBUG_printf(("1httpWrite2: Returning " CUPS_LLFMT
".", CUPS_LLCAST bytes
));
3328 * 'httpWriteResponse()' - Write a HTTP response to a client connection.
3330 * @since CUPS 1.7/macOS 10.9@
3333 int /* O - 0 on success, -1 on error */
3334 httpWriteResponse(http_t
*http
, /* I - HTTP connection */
3335 http_status_t status
) /* I - Status code */
3337 http_encoding_t old_encoding
; /* Old data_encoding value */
3338 off_t old_remaining
; /* Old data_remaining value */
3342 * Range check input...
3345 DEBUG_printf(("httpWriteResponse(http=%p, status=%d)", (void *)http
, status
));
3347 if (!http
|| status
< HTTP_STATUS_CONTINUE
)
3349 DEBUG_puts("1httpWriteResponse: Bad input.");
3354 * Set the various standard fields if they aren't already...
3357 if (!http
->fields
[HTTP_FIELD_DATE
])
3358 httpSetField(http
, HTTP_FIELD_DATE
, httpGetDateString(time(NULL
)));
3360 if (status
>= HTTP_STATUS_BAD_REQUEST
&& http
->keep_alive
)
3362 http
->keep_alive
= HTTP_KEEPALIVE_OFF
;
3363 httpSetField(http
, HTTP_FIELD_KEEP_ALIVE
, "");
3366 if (http
->version
== HTTP_VERSION_1_1
)
3368 if (!http
->fields
[HTTP_FIELD_CONNECTION
])
3370 if (http
->keep_alive
)
3371 httpSetField(http
, HTTP_FIELD_CONNECTION
, "Keep-Alive");
3373 httpSetField(http
, HTTP_FIELD_CONNECTION
, "close");
3376 if (http
->keep_alive
&& !http
->fields
[HTTP_FIELD_KEEP_ALIVE
])
3377 httpSetField(http
, HTTP_FIELD_KEEP_ALIVE
, "timeout=10");
3381 if (status
== HTTP_STATUS_UPGRADE_REQUIRED
||
3382 status
== HTTP_STATUS_SWITCHING_PROTOCOLS
)
3384 if (!http
->fields
[HTTP_FIELD_CONNECTION
])
3385 httpSetField(http
, HTTP_FIELD_CONNECTION
, "Upgrade");
3387 if (!http
->fields
[HTTP_FIELD_UPGRADE
])
3388 httpSetField(http
, HTTP_FIELD_UPGRADE
, "TLS/1.2,TLS/1.1,TLS/1.0");
3390 if (!http
->fields
[HTTP_FIELD_CONTENT_LENGTH
])
3391 httpSetField(http
, HTTP_FIELD_CONTENT_LENGTH
, "0");
3393 #endif /* HAVE_SSL */
3395 if (!http
->fields
[HTTP_FIELD_SERVER
])
3396 httpSetField(http
, HTTP_FIELD_SERVER
, http
->default_fields
[HTTP_FIELD_SERVER
] ? http
->default_fields
[HTTP_FIELD_SERVER
] : CUPS_MINIMAL
);
3399 * Set the Accept-Encoding field if it isn't already...
3402 if (!http
->fields
[HTTP_FIELD_ACCEPT_ENCODING
])
3403 httpSetField(http
, HTTP_FIELD_ACCEPT_ENCODING
, http
->default_fields
[HTTP_FIELD_ACCEPT_ENCODING
] ? http
->default_fields
[HTTP_FIELD_ACCEPT_ENCODING
] :
3405 "gzip, deflate, identity");
3408 #endif /* HAVE_LIBZ */
3411 * Send the response header...
3414 old_encoding
= http
->data_encoding
;
3415 old_remaining
= http
->data_remaining
;
3416 http
->data_encoding
= HTTP_ENCODING_FIELDS
;
3418 if (httpPrintf(http
, "HTTP/%d.%d %d %s\r\n", http
->version
/ 100, http
->version
% 100, (int)status
, httpStatus(status
)) < 0)
3420 http
->status
= HTTP_STATUS_ERROR
;
3424 if (status
!= HTTP_STATUS_CONTINUE
)
3427 * 100 Continue doesn't have the rest of the response headers...
3430 int i
; /* Looping var */
3431 const char *value
; /* Field value */
3433 for (i
= 0; i
< HTTP_FIELD_MAX
; i
++)
3435 if ((value
= httpGetField(http
, i
)) != NULL
&& *value
)
3437 if (httpPrintf(http
, "%s: %s\r\n", http_fields
[i
], value
) < 1)
3439 http
->status
= HTTP_STATUS_ERROR
;
3447 if (strchr(http
->cookie
, ';'))
3449 if (httpPrintf(http
, "Set-Cookie: %s\r\n", http
->cookie
) < 1)
3451 http
->status
= HTTP_STATUS_ERROR
;
3455 else if (httpPrintf(http
, "Set-Cookie: %s; path=/; httponly;%s\r\n", http
->cookie
, http
->tls
? " secure;" : "") < 1)
3457 http
->status
= HTTP_STATUS_ERROR
;
3463 * "Click-jacking" defense (STR #4492)...
3466 if (httpPrintf(http
, "X-Frame-Options: DENY\r\n"
3467 "Content-Security-Policy: frame-ancestors 'none'\r\n") < 1)
3469 http
->status
= HTTP_STATUS_ERROR
;
3474 if (httpWrite2(http
, "\r\n", 2) < 2)
3476 http
->status
= HTTP_STATUS_ERROR
;
3480 if (httpFlushWrite(http
) < 0)
3482 http
->status
= HTTP_STATUS_ERROR
;
3486 if (status
== HTTP_STATUS_CONTINUE
||
3487 status
== HTTP_STATUS_SWITCHING_PROTOCOLS
)
3490 * Restore the old data_encoding and data_length values...
3493 http
->data_encoding
= old_encoding
;
3494 http
->data_remaining
= old_remaining
;
3496 if (old_remaining
<= INT_MAX
)
3497 http
->_data_remaining
= (int)old_remaining
;
3499 http
->_data_remaining
= INT_MAX
;
3501 else if (http
->state
== HTTP_STATE_OPTIONS
||
3502 http
->state
== HTTP_STATE_HEAD
||
3503 http
->state
== HTTP_STATE_PUT
||
3504 http
->state
== HTTP_STATE_TRACE
||
3505 http
->state
== HTTP_STATE_CONNECT
||
3506 http
->state
== HTTP_STATE_STATUS
)
3508 DEBUG_printf(("1httpWriteResponse: Resetting state to HTTP_STATE_WAITING, "
3509 "was %s.", httpStateString(http
->state
)));
3510 http
->state
= HTTP_STATE_WAITING
;
3515 * Force data_encoding and data_length to be set according to the response
3519 http_set_length(http
);
3521 if (http
->data_encoding
== HTTP_ENCODING_LENGTH
&& http
->data_remaining
== 0)
3523 DEBUG_printf(("1httpWriteResponse: Resetting state to HTTP_STATE_WAITING, "
3524 "was %s.", httpStateString(http
->state
)));
3525 http
->state
= HTTP_STATE_WAITING
;
3529 if (http
->state
== HTTP_STATE_POST_RECV
|| http
->state
== HTTP_STATE_GET
)
3534 * Then start any content encoding...
3537 DEBUG_puts("1httpWriteResponse: Calling http_content_coding_start.");
3538 http_content_coding_start(http
,
3539 httpGetField(http
, HTTP_FIELD_CONTENT_ENCODING
));
3540 #endif /* HAVE_LIBZ */
3549 * 'http_add_field()' - Add a value for a HTTP field, appending if needed.
3553 http_add_field(http_t
*http
, /* I - HTTP connection */
3554 http_field_t field
, /* I - HTTP field */
3555 const char *value
, /* I - Value string */
3556 int append
) /* I - Append value? */
3558 char temp
[1024]; /* Temporary value string */
3559 size_t fieldlen
, /* Length of existing value */
3560 valuelen
, /* Length of value string */
3561 total
; /* Total length of string */
3564 if (field
== HTTP_FIELD_HOST
)
3567 * Special-case for Host: as we don't want a trailing "." on the hostname and
3568 * need to bracket IPv6 numeric addresses.
3571 char *ptr
= strchr(value
, ':');
3573 if (value
[0] != '[' && ptr
&& strchr(ptr
+ 1, ':'))
3576 * Bracket IPv6 numeric addresses...
3578 * This is slightly inefficient (basically copying twice), but is an edge
3579 * case and not worth optimizing...
3582 snprintf(temp
, sizeof(temp
), "[%s]", value
);
3588 * Check for a trailing dot on the hostname...
3591 strlcpy(temp
, value
, sizeof(temp
));
3593 ptr
= temp
+ strlen(temp
) - 1;
3600 if (append
&& field
!= HTTP_FIELD_ACCEPT_ENCODING
&& field
!= HTTP_FIELD_ACCEPT_LANGUAGE
&& field
!= HTTP_FIELD_ACCEPT_RANGES
&& field
!= HTTP_FIELD_ALLOW
&& field
!= HTTP_FIELD_LINK
&& field
!= HTTP_FIELD_TRANSFER_ENCODING
&& field
!= HTTP_FIELD_UPGRADE
&& field
!= HTTP_FIELD_WWW_AUTHENTICATE
)
3603 if (!append
&& http
->fields
[field
])
3605 if (http
->fields
[field
] != http
->_fields
[field
])
3606 free(http
->fields
[field
]);
3608 http
->fields
[field
] = NULL
;
3611 valuelen
= strlen(value
);
3615 http
->_fields
[field
][0] = '\0';
3619 if (http
->fields
[field
])
3621 fieldlen
= strlen(http
->fields
[field
]);
3622 total
= fieldlen
+ 2 + valuelen
;
3630 if (total
< HTTP_MAX_VALUE
&& field
< HTTP_FIELD_ACCEPT_ENCODING
)
3633 * Copy short values to legacy char arrays (maintained for binary
3634 * compatibility with CUPS 1.2.x and earlier applications...)
3639 char combined
[HTTP_MAX_VALUE
];
3640 /* Combined value string */
3642 snprintf(combined
, sizeof(combined
), "%s, %s", http
->_fields
[field
], value
);
3646 strlcpy(http
->_fields
[field
], value
, sizeof(http
->_fields
[field
]));
3647 http
->fields
[field
] = http
->_fields
[field
];
3652 * Expand the field value...
3655 char *combined
; /* New value string */
3657 if (http
->fields
[field
] == http
->_fields
[field
])
3659 if ((combined
= malloc(total
+ 1)) != NULL
)
3661 http
->fields
[field
] = combined
;
3662 snprintf(combined
, total
+ 1, "%s, %s", http
->_fields
[field
], value
);
3665 else if ((combined
= realloc(http
->fields
[field
], total
+ 1)) != NULL
)
3667 http
->fields
[field
] = combined
;
3668 strlcat(combined
, ", ", total
+ 1);
3669 strlcat(combined
, value
, total
+ 1);
3675 * Allocate the field value...
3678 http
->fields
[field
] = strdup(value
);
3682 if (field
== HTTP_FIELD_CONTENT_ENCODING
&& http
->data_encoding
!= HTTP_ENCODING_FIELDS
)
3684 DEBUG_puts("1httpSetField: Calling http_content_coding_start.");
3685 http_content_coding_start(http
, value
);
3687 #endif /* HAVE_LIBZ */
3693 * 'http_content_coding_finish()' - Finish doing any content encoding.
3697 http_content_coding_finish(
3698 http_t
*http
) /* I - HTTP connection */
3700 int zerr
; /* Compression status */
3701 Byte dummy
[1]; /* Dummy read buffer */
3702 size_t bytes
; /* Number of bytes to write */
3705 DEBUG_printf(("http_content_coding_finish(http=%p)", (void *)http
));
3706 DEBUG_printf(("1http_content_coding_finishing: http->coding=%d", http
->coding
));
3708 switch (http
->coding
)
3710 case _HTTP_CODING_DEFLATE
:
3711 case _HTTP_CODING_GZIP
:
3712 ((z_stream
*)http
->stream
)->next_in
= dummy
;
3713 ((z_stream
*)http
->stream
)->avail_in
= 0;
3717 zerr
= deflate((z_stream
*)http
->stream
, Z_FINISH
);
3718 bytes
= _HTTP_MAX_SBUFFER
- ((z_stream
*)http
->stream
)->avail_out
;
3722 DEBUG_printf(("1http_content_coding_finish: Writing trailing chunk, len=%d", (int)bytes
));
3724 if (http
->data_encoding
== HTTP_ENCODING_CHUNKED
)
3725 http_write_chunk(http
, (char *)http
->sbuffer
, bytes
);
3727 http_write(http
, (char *)http
->sbuffer
, bytes
);
3730 ((z_stream
*)http
->stream
)->next_out
= (Bytef
*)http
->sbuffer
;
3731 ((z_stream
*)http
->stream
)->avail_out
= (uInt
)_HTTP_MAX_SBUFFER
;
3733 while (zerr
== Z_OK
);
3735 deflateEnd((z_stream
*)http
->stream
);
3737 free(http
->sbuffer
);
3740 http
->sbuffer
= NULL
;
3741 http
->stream
= NULL
;
3744 httpFlushWrite(http
);
3747 case _HTTP_CODING_INFLATE
:
3748 case _HTTP_CODING_GUNZIP
:
3749 inflateEnd((z_stream
*)http
->stream
);
3751 free(http
->sbuffer
);
3754 http
->sbuffer
= NULL
;
3755 http
->stream
= NULL
;
3762 http
->coding
= _HTTP_CODING_IDENTITY
;
3767 * 'http_content_coding_start()' - Start doing content encoding.
3771 http_content_coding_start(
3772 http_t
*http
, /* I - HTTP connection */
3773 const char *value
) /* I - Value of Content-Encoding */
3775 int zerr
; /* Error/status */
3776 _http_coding_t coding
; /* Content coding value */
3779 DEBUG_printf(("http_content_coding_start(http=%p, value=\"%s\")", (void *)http
, value
));
3781 if (http
->coding
!= _HTTP_CODING_IDENTITY
)
3783 DEBUG_printf(("1http_content_coding_start: http->coding already %d.",
3787 else if (!strcmp(value
, "x-gzip") || !strcmp(value
, "gzip"))
3789 if (http
->state
== HTTP_STATE_GET_SEND
||
3790 http
->state
== HTTP_STATE_POST_SEND
)
3791 coding
= http
->mode
== _HTTP_MODE_SERVER
? _HTTP_CODING_GZIP
:
3792 _HTTP_CODING_GUNZIP
;
3793 else if (http
->state
== HTTP_STATE_POST_RECV
||
3794 http
->state
== HTTP_STATE_PUT_RECV
)
3795 coding
= http
->mode
== _HTTP_MODE_CLIENT
? _HTTP_CODING_GZIP
:
3796 _HTTP_CODING_GUNZIP
;
3799 DEBUG_puts("1http_content_coding_start: Not doing content coding.");
3803 else if (!strcmp(value
, "x-deflate") || !strcmp(value
, "deflate"))
3805 if (http
->state
== HTTP_STATE_GET_SEND
||
3806 http
->state
== HTTP_STATE_POST_SEND
)
3807 coding
= http
->mode
== _HTTP_MODE_SERVER
? _HTTP_CODING_DEFLATE
:
3808 _HTTP_CODING_INFLATE
;
3809 else if (http
->state
== HTTP_STATE_POST_RECV
||
3810 http
->state
== HTTP_STATE_PUT_RECV
)
3811 coding
= http
->mode
== _HTTP_MODE_CLIENT
? _HTTP_CODING_DEFLATE
:
3812 _HTTP_CODING_INFLATE
;
3815 DEBUG_puts("1http_content_coding_start: Not doing content coding.");
3821 DEBUG_puts("1http_content_coding_start: Not doing content coding.");
3827 case _HTTP_CODING_DEFLATE
:
3828 case _HTTP_CODING_GZIP
:
3830 httpFlushWrite(http
);
3832 if ((http
->sbuffer
= malloc(_HTTP_MAX_SBUFFER
)) == NULL
)
3834 http
->status
= HTTP_STATUS_ERROR
;
3835 http
->error
= errno
;
3840 * Window size for compression is 11 bits - optimal based on PWG Raster
3841 * sample files on pwg.org. -11 is raw deflate, 27 is gzip, per ZLIB
3845 if ((http
->stream
= calloc(1, sizeof(z_stream
))) == NULL
)
3847 free(http
->sbuffer
);
3849 http
->sbuffer
= NULL
;
3850 http
->status
= HTTP_STATUS_ERROR
;
3851 http
->error
= errno
;
3855 if ((zerr
= deflateInit2((z_stream
*)http
->stream
, Z_DEFAULT_COMPRESSION
, Z_DEFLATED
, coding
== _HTTP_CODING_DEFLATE
? -11 : 27, 7, Z_DEFAULT_STRATEGY
)) < Z_OK
)
3857 free(http
->sbuffer
);
3860 http
->sbuffer
= NULL
;
3861 http
->stream
= NULL
;
3862 http
->status
= HTTP_STATUS_ERROR
;
3863 http
->error
= zerr
== Z_MEM_ERROR
? ENOMEM
: EINVAL
;
3867 ((z_stream
*)http
->stream
)->next_out
= (Bytef
*)http
->sbuffer
;
3868 ((z_stream
*)http
->stream
)->avail_out
= (uInt
)_HTTP_MAX_SBUFFER
;
3871 case _HTTP_CODING_INFLATE
:
3872 case _HTTP_CODING_GUNZIP
:
3873 if ((http
->sbuffer
= malloc(_HTTP_MAX_SBUFFER
)) == NULL
)
3875 http
->status
= HTTP_STATUS_ERROR
;
3876 http
->error
= errno
;
3881 * Window size for decompression is up to 15 bits (maximum supported).
3882 * -15 is raw inflate, 31 is gunzip, per ZLIB documentation.
3885 if ((http
->stream
= calloc(1, sizeof(z_stream
))) == NULL
)
3887 free(http
->sbuffer
);
3889 http
->sbuffer
= NULL
;
3890 http
->status
= HTTP_STATUS_ERROR
;
3891 http
->error
= errno
;
3895 if ((zerr
= inflateInit2((z_stream
*)http
->stream
, coding
== _HTTP_CODING_INFLATE
? -15 : 31)) < Z_OK
)
3897 free(http
->sbuffer
);
3900 http
->sbuffer
= NULL
;
3901 http
->stream
= NULL
;
3902 http
->status
= HTTP_STATUS_ERROR
;
3903 http
->error
= zerr
== Z_MEM_ERROR
? ENOMEM
: EINVAL
;
3907 ((z_stream
*)http
->stream
)->avail_in
= 0;
3908 ((z_stream
*)http
->stream
)->next_in
= http
->sbuffer
;
3915 http
->coding
= coding
;
3917 DEBUG_printf(("1http_content_coding_start: http->coding now %d.",
3920 #endif /* HAVE_LIBZ */
3924 * 'http_create()' - Create an unconnected HTTP connection.
3927 static http_t
* /* O - HTTP connection */
3929 const char *host
, /* I - Hostname */
3930 int port
, /* I - Port number */
3931 http_addrlist_t
*addrlist
, /* I - Address list or @code NULL@ */
3932 int family
, /* I - Address family or AF_UNSPEC */
3933 http_encryption_t encryption
, /* I - Encryption to use */
3934 int blocking
, /* I - 1 for blocking mode */
3935 _http_mode_t mode
) /* I - _HTTP_MODE_CLIENT or _SERVER */
3937 http_t
*http
; /* New HTTP connection */
3938 char service
[255]; /* Service name */
3939 http_addrlist_t
*myaddrlist
= NULL
; /* My address list */
3942 DEBUG_printf(("4http_create(host=\"%s\", port=%d, addrlist=%p, family=%d, encryption=%d, blocking=%d, mode=%d)", host
, port
, (void *)addrlist
, family
, encryption
, blocking
, mode
));
3944 if (!host
&& mode
== _HTTP_MODE_CLIENT
)
3950 * Lookup the host...
3955 myaddrlist
= httpAddrCopyList(addrlist
);
3959 snprintf(service
, sizeof(service
), "%d", port
);
3961 myaddrlist
= httpAddrGetList(host
, family
, service
);
3968 * Allocate memory for the structure...
3971 if ((http
= calloc(sizeof(http_t
), 1)) == NULL
)
3973 _cupsSetError(IPP_STATUS_ERROR_INTERNAL
, strerror(errno
), 0);
3974 httpAddrFreeList(myaddrlist
);
3979 * Initialize the HTTP data...
3983 http
->activity
= time(NULL
);
3984 http
->addrlist
= myaddrlist
;
3985 http
->blocking
= blocking
;
3988 http
->gssctx
= GSS_C_NO_CONTEXT
;
3989 http
->gssname
= GSS_C_NO_NAME
;
3990 #endif /* HAVE_GSSAPI */
3991 http
->status
= HTTP_STATUS_CONTINUE
;
3992 http
->version
= HTTP_VERSION_1_1
;
3995 strlcpy(http
->hostname
, host
, sizeof(http
->hostname
));
3997 if (port
== 443) /* Always use encryption for https */
3998 http
->encryption
= HTTP_ENCRYPTION_ALWAYS
;
4000 http
->encryption
= encryption
;
4002 http_set_wait(http
);
4005 * Return the new structure...
4014 * 'http_debug_hex()' - Do a hex dump of a buffer.
4018 http_debug_hex(const char *prefix
, /* I - Prefix for line */
4019 const char *buffer
, /* I - Buffer to dump */
4020 int bytes
) /* I - Bytes to dump */
4022 int i
, j
, /* Looping vars */
4023 ch
; /* Current character */
4024 char line
[255], /* Line buffer */
4025 *start
, /* Start of line after prefix */
4026 *ptr
; /* Pointer into line */
4029 if (_cups_debug_fd
< 0 || _cups_debug_level
< 6)
4032 DEBUG_printf(("6%s: %d bytes:", prefix
, bytes
));
4034 snprintf(line
, sizeof(line
), "6%s: ", prefix
);
4035 start
= line
+ strlen(line
);
4037 for (i
= 0; i
< bytes
; i
+= 16)
4039 for (j
= 0, ptr
= start
; j
< 16 && (i
+ j
) < bytes
; j
++, ptr
+= 2)
4040 snprintf(ptr
, 3, "%02X", buffer
[i
+ j
] & 255);
4044 memcpy(ptr
, " ", 3);
4049 memcpy(ptr
, " ", 3);
4052 for (j
= 0; j
< 16 && (i
+ j
) < bytes
; j
++)
4054 ch
= buffer
[i
+ j
] & 255;
4056 if (ch
< ' ' || ch
>= 127)
4070 * 'http_read()' - Read a buffer from a HTTP connection.
4072 * This function does the low-level read from the socket, retrying and timing
4076 static ssize_t
/* O - Number of bytes read or -1 on error */
4077 http_read(http_t
*http
, /* I - HTTP connection */
4078 char *buffer
, /* I - Buffer */
4079 size_t length
) /* I - Maximum bytes to read */
4081 ssize_t bytes
; /* Bytes read */
4084 DEBUG_printf(("http_read(http=%p, buffer=%p, length=" CUPS_LLFMT
")", (void *)http
, (void *)buffer
, CUPS_LLCAST length
));
4086 if (!http
->blocking
|| http
->timeout_value
> 0.0)
4088 while (!httpWait(http
, http
->wait_value
))
4090 if (http
->timeout_cb
&& (*http
->timeout_cb
)(http
, http
->timeout_data
))
4093 DEBUG_puts("2http_read: Timeout.");
4098 DEBUG_printf(("2http_read: Reading %d bytes into buffer.", (int)length
));
4104 bytes
= _httpTLSRead(http
, buffer
, (int)length
);
4106 #endif /* HAVE_SSL */
4107 bytes
= recv(http
->fd
, buffer
, length
, 0);
4112 if (WSAGetLastError() != WSAEINTR
)
4114 http
->error
= WSAGetLastError();
4117 else if (WSAGetLastError() == WSAEWOULDBLOCK
)
4119 if (!http
->timeout_cb
||
4120 !(*http
->timeout_cb
)(http
, http
->timeout_data
))
4122 http
->error
= WSAEWOULDBLOCK
;
4127 DEBUG_printf(("2http_read: %s", strerror(errno
)));
4129 if (errno
== EWOULDBLOCK
|| errno
== EAGAIN
)
4131 if (http
->timeout_cb
&& !(*http
->timeout_cb
)(http
, http
->timeout_data
))
4133 http
->error
= errno
;
4136 else if (!http
->timeout_cb
&& errno
!= EAGAIN
)
4138 http
->error
= errno
;
4142 else if (errno
!= EINTR
)
4144 http
->error
= errno
;
4152 DEBUG_printf(("2http_read: Read " CUPS_LLFMT
" bytes into buffer.",
4153 CUPS_LLCAST bytes
));
4156 http_debug_hex("http_read", buffer
, (int)bytes
);
4162 if (WSAGetLastError() == WSAEINTR
)
4165 http
->error
= WSAGetLastError();
4167 if (errno
== EINTR
|| (errno
== EAGAIN
&& !http
->timeout_cb
))
4170 http
->error
= errno
;
4173 else if (bytes
== 0)
4175 http
->error
= EPIPE
;
4184 * 'http_read_buffered()' - Do a buffered read from a HTTP connection.
4186 * This function reads data from the HTTP buffer or from the socket, as needed.
4189 static ssize_t
/* O - Number of bytes read or -1 on error */
4190 http_read_buffered(http_t
*http
, /* I - HTTP connection */
4191 char *buffer
, /* I - Buffer */
4192 size_t length
) /* I - Maximum bytes to read */
4194 ssize_t bytes
; /* Bytes read */
4197 DEBUG_printf(("http_read_buffered(http=%p, buffer=%p, length=" CUPS_LLFMT
") used=%d", (void *)http
, (void *)buffer
, CUPS_LLCAST length
, http
->used
));
4201 if (length
> (size_t)http
->used
)
4202 bytes
= (ssize_t
)http
->used
;
4204 bytes
= (ssize_t
)length
;
4206 DEBUG_printf(("2http_read: Grabbing %d bytes from input buffer.",
4209 memcpy(buffer
, http
->buffer
, (size_t)bytes
);
4210 http
->used
-= (int)bytes
;
4213 memmove(http
->buffer
, http
->buffer
+ bytes
, (size_t)http
->used
);
4216 bytes
= http_read(http
, buffer
, length
);
4223 * 'http_read_chunk()' - Read a chunk from a HTTP connection.
4225 * This function reads and validates the chunk length, then does a buffered read
4226 * returning the number of bytes placed in the buffer.
4229 static ssize_t
/* O - Number of bytes read or -1 on error */
4230 http_read_chunk(http_t
*http
, /* I - HTTP connection */
4231 char *buffer
, /* I - Buffer */
4232 size_t length
) /* I - Maximum bytes to read */
4234 DEBUG_printf(("http_read_chunk(http=%p, buffer=%p, length=" CUPS_LLFMT
")", (void *)http
, (void *)buffer
, CUPS_LLCAST length
));
4236 if (http
->data_remaining
<= 0)
4238 char len
[32]; /* Length string */
4240 if (!httpGets(len
, sizeof(len
), http
))
4242 DEBUG_puts("1http_read_chunk: Could not get chunk length.");
4248 DEBUG_puts("1http_read_chunk: Blank chunk length, trying again...");
4249 if (!httpGets(len
, sizeof(len
), http
))
4251 DEBUG_puts("1http_read_chunk: Could not get chunk length.");
4256 http
->data_remaining
= strtoll(len
, NULL
, 16);
4258 if (http
->data_remaining
< 0)
4260 DEBUG_printf(("1http_read_chunk: Negative chunk length \"%s\" ("
4261 CUPS_LLFMT
")", len
, CUPS_LLCAST http
->data_remaining
));
4265 DEBUG_printf(("2http_read_chunk: Got chunk length \"%s\" (" CUPS_LLFMT
")",
4266 len
, CUPS_LLCAST http
->data_remaining
));
4268 if (http
->data_remaining
== 0)
4271 * 0-length chunk, grab trailing blank line...
4274 httpGets(len
, sizeof(len
), http
);
4278 DEBUG_printf(("2http_read_chunk: data_remaining=" CUPS_LLFMT
,
4279 CUPS_LLCAST http
->data_remaining
));
4281 if (http
->data_remaining
<= 0)
4283 else if (length
> (size_t)http
->data_remaining
)
4284 length
= (size_t)http
->data_remaining
;
4286 return (http_read_buffered(http
, buffer
, length
));
4291 * 'http_send()' - Send a request with all fields and the trailing blank line.
4294 static int /* O - 0 on success, non-zero on error */
4295 http_send(http_t
*http
, /* I - HTTP connection */
4296 http_state_t request
, /* I - Request code */
4297 const char *uri
) /* I - URI */
4299 int i
; /* Looping var */
4300 char buf
[1024]; /* Encoded URI buffer */
4301 const char *value
; /* Field value */
4302 static const char * const codes
[] = /* Request code strings */
4322 DEBUG_printf(("4http_send(http=%p, request=HTTP_%s, uri=\"%s\")", (void *)http
, codes
[request
], uri
));
4324 if (http
== NULL
|| uri
== NULL
)
4328 * Set the User-Agent field if it isn't already...
4331 if (!http
->fields
[HTTP_FIELD_USER_AGENT
])
4333 if (http
->default_fields
[HTTP_FIELD_USER_AGENT
])
4334 httpSetField(http
, HTTP_FIELD_USER_AGENT
, http
->default_fields
[HTTP_FIELD_USER_AGENT
]);
4336 httpSetField(http
, HTTP_FIELD_USER_AGENT
, cupsUserAgent());
4340 * Set the Accept-Encoding field if it isn't already...
4343 if (!http
->fields
[HTTP_FIELD_ACCEPT_ENCODING
] && http
->default_fields
[HTTP_FIELD_ACCEPT_ENCODING
])
4344 httpSetField(http
, HTTP_FIELD_ACCEPT_ENCODING
, http
->default_fields
[HTTP_FIELD_ACCEPT_ENCODING
]);
4347 * Encode the URI as needed...
4350 _httpEncodeURI(buf
, uri
, sizeof(buf
));
4353 * See if we had an error the last time around; if so, reconnect...
4356 if (http
->fd
< 0 || http
->status
== HTTP_STATUS_ERROR
||
4357 http
->status
>= HTTP_STATUS_BAD_REQUEST
)
4359 DEBUG_printf(("5http_send: Reconnecting, fd=%d, status=%d, tls_upgrade=%d",
4360 http
->fd
, http
->status
, http
->tls_upgrade
));
4362 if (httpReconnect2(http
, 30000, NULL
))
4367 * Flush any written data that is pending...
4372 if (httpFlushWrite(http
) < 0)
4373 if (httpReconnect2(http
, 30000, NULL
))
4378 * Send the request header...
4381 http
->state
= request
;
4382 http
->data_encoding
= HTTP_ENCODING_FIELDS
;
4384 if (request
== HTTP_STATE_POST
|| request
== HTTP_STATE_PUT
)
4387 http
->status
= HTTP_STATUS_CONTINUE
;
4390 if (http
->encryption
== HTTP_ENCRYPTION_REQUIRED
&& !http
->tls
)
4392 httpSetField(http
, HTTP_FIELD_CONNECTION
, "Upgrade");
4393 httpSetField(http
, HTTP_FIELD_UPGRADE
, "TLS/1.2,TLS/1.1,TLS/1.0");
4395 #endif /* HAVE_SSL */
4397 if (httpPrintf(http
, "%s %s HTTP/1.1\r\n", codes
[request
], buf
) < 1)
4399 http
->status
= HTTP_STATUS_ERROR
;
4403 for (i
= 0; i
< HTTP_FIELD_MAX
; i
++)
4404 if ((value
= httpGetField(http
, i
)) != NULL
&& *value
)
4406 DEBUG_printf(("5http_send: %s: %s", http_fields
[i
], value
));
4408 if (i
== HTTP_FIELD_HOST
)
4410 if (httpPrintf(http
, "Host: %s:%d\r\n", value
,
4411 httpAddrPort(http
->hostaddr
)) < 1)
4413 http
->status
= HTTP_STATUS_ERROR
;
4417 else if (httpPrintf(http
, "%s: %s\r\n", http_fields
[i
], value
) < 1)
4419 http
->status
= HTTP_STATUS_ERROR
;
4425 if (httpPrintf(http
, "Cookie: $Version=0; %s\r\n", http
->cookie
) < 1)
4427 http
->status
= HTTP_STATUS_ERROR
;
4431 DEBUG_printf(("5http_send: expect=%d, mode=%d, state=%d", http
->expect
,
4432 http
->mode
, http
->state
));
4434 if (http
->expect
== HTTP_STATUS_CONTINUE
&& http
->mode
== _HTTP_MODE_CLIENT
&&
4435 (http
->state
== HTTP_STATE_POST_RECV
||
4436 http
->state
== HTTP_STATE_PUT_RECV
))
4437 if (httpPrintf(http
, "Expect: 100-continue\r\n") < 1)
4439 http
->status
= HTTP_STATUS_ERROR
;
4443 if (httpPrintf(http
, "\r\n") < 1)
4445 http
->status
= HTTP_STATUS_ERROR
;
4449 if (httpFlushWrite(http
) < 0)
4452 http_set_length(http
);
4453 httpClearFields(http
);
4456 * The Kerberos and AuthRef authentication strings can only be used once...
4459 if (http
->fields
[HTTP_FIELD_AUTHORIZATION
] && http
->authstring
&&
4460 (!strncmp(http
->authstring
, "Negotiate", 9) ||
4461 !strncmp(http
->authstring
, "AuthRef", 7)))
4463 http
->_authstring
[0] = '\0';
4465 if (http
->authstring
!= http
->_authstring
)
4466 free(http
->authstring
);
4468 http
->authstring
= http
->_authstring
;
4476 * 'http_set_length()' - Set the data_encoding and data_remaining values.
4479 static off_t
/* O - Remainder or -1 on error */
4480 http_set_length(http_t
*http
) /* I - Connection */
4482 off_t remaining
; /* Remainder */
4485 DEBUG_printf(("http_set_length(http=%p) mode=%d state=%s", (void *)http
, http
->mode
, httpStateString(http
->state
)));
4487 if ((remaining
= httpGetLength2(http
)) >= 0)
4489 if (http
->mode
== _HTTP_MODE_SERVER
&&
4490 http
->state
!= HTTP_STATE_GET_SEND
&&
4491 http
->state
!= HTTP_STATE_PUT
&&
4492 http
->state
!= HTTP_STATE_POST
&&
4493 http
->state
!= HTTP_STATE_POST_SEND
)
4495 DEBUG_puts("1http_set_length: Not setting data_encoding/remaining.");
4499 if (!_cups_strcasecmp(httpGetField(http
, HTTP_FIELD_TRANSFER_ENCODING
), "chunked"))
4501 DEBUG_puts("1http_set_length: Setting data_encoding to "
4502 "HTTP_ENCODING_CHUNKED.");
4503 http
->data_encoding
= HTTP_ENCODING_CHUNKED
;
4507 DEBUG_puts("1http_set_length: Setting data_encoding to "
4508 "HTTP_ENCODING_LENGTH.");
4509 http
->data_encoding
= HTTP_ENCODING_LENGTH
;
4512 DEBUG_printf(("1http_set_length: Setting data_remaining to " CUPS_LLFMT
".",
4513 CUPS_LLCAST remaining
));
4514 http
->data_remaining
= remaining
;
4516 if (remaining
<= INT_MAX
)
4517 http
->_data_remaining
= (int)remaining
;
4519 http
->_data_remaining
= INT_MAX
;
4526 * 'http_set_timeout()' - Set the socket timeout values.
4530 http_set_timeout(int fd
, /* I - File descriptor */
4531 double timeout
) /* I - Timeout in seconds */
4534 DWORD tv
= (DWORD
)(timeout
* 1000);
4535 /* Timeout in milliseconds */
4537 setsockopt(fd
, SOL_SOCKET
, SO_RCVTIMEO
, CUPS_SOCAST
&tv
, sizeof(tv
));
4538 setsockopt(fd
, SOL_SOCKET
, SO_SNDTIMEO
, CUPS_SOCAST
&tv
, sizeof(tv
));
4541 struct timeval tv
; /* Timeout in secs and usecs */
4543 tv
.tv_sec
= (int)timeout
;
4544 tv
.tv_usec
= (int)(1000000 * fmod(timeout
, 1.0));
4546 setsockopt(fd
, SOL_SOCKET
, SO_RCVTIMEO
, CUPS_SOCAST
&tv
, sizeof(tv
));
4547 setsockopt(fd
, SOL_SOCKET
, SO_SNDTIMEO
, CUPS_SOCAST
&tv
, sizeof(tv
));
4553 * 'http_set_wait()' - Set the default wait value for reads.
4557 http_set_wait(http_t
*http
) /* I - HTTP connection */
4561 http
->wait_value
= (int)(http
->timeout_value
* 1000);
4563 if (http
->wait_value
<= 0)
4564 http
->wait_value
= 60000;
4567 http
->wait_value
= 10000;
4573 * 'http_tls_upgrade()' - Force upgrade to TLS encryption.
4576 static int /* O - Status of connection */
4577 http_tls_upgrade(http_t
*http
) /* I - HTTP connection */
4579 int ret
; /* Return value */
4580 http_t myhttp
; /* Local copy of HTTP data */
4583 DEBUG_printf(("7http_tls_upgrade(%p)", (void *)http
));
4586 * Flush the connection to make sure any previous "Upgrade" message
4593 * Copy the HTTP data to a local variable so we can do the OPTIONS
4594 * request without interfering with the existing request data...
4597 memcpy(&myhttp
, http
, sizeof(myhttp
));
4600 * Send an OPTIONS request to the server, requiring SSL or TLS
4601 * encryption on the link...
4604 http
->tls_upgrade
= 1;
4605 memset(http
->fields
, 0, sizeof(http
->fields
));
4606 http
->expect
= (http_status_t
)0;
4608 if (http
->hostname
[0] == '/')
4609 httpSetField(http
, HTTP_FIELD_HOST
, "localhost");
4611 httpSetField(http
, HTTP_FIELD_HOST
, http
->hostname
);
4613 httpSetField(http
, HTTP_FIELD_CONNECTION
, "upgrade");
4614 httpSetField(http
, HTTP_FIELD_UPGRADE
, "TLS/1.2,TLS/1.1,TLS/1.0");
4616 if ((ret
= httpOptions(http
, "*")) == 0)
4619 * Wait for the secure connection...
4622 while (httpUpdate(http
) == HTTP_STATUS_CONTINUE
);
4626 * Restore the HTTP request data...
4629 memcpy(http
->_fields
, myhttp
._fields
, sizeof(http
->_fields
));
4630 memcpy(http
->fields
, myhttp
.fields
, sizeof(http
->fields
));
4632 http
->data_encoding
= myhttp
.data_encoding
;
4633 http
->data_remaining
= myhttp
.data_remaining
;
4634 http
->_data_remaining
= myhttp
._data_remaining
;
4635 http
->expect
= myhttp
.expect
;
4636 http
->digest_tries
= myhttp
.digest_tries
;
4637 http
->tls_upgrade
= 0;
4640 * See if we actually went secure...
4646 * Server does not support HTTP upgrade...
4649 DEBUG_puts("8http_tls_upgrade: Server does not support HTTP upgrade!");
4651 _cupsSetError(IPP_STATUS_ERROR_CUPS_PKI
, _("Encryption is not supported."), 1);
4652 httpAddrClose(NULL
, http
->fd
);
4661 #endif /* HAVE_SSL */
4665 * 'http_write()' - Write a buffer to a HTTP connection.
4668 static ssize_t
/* O - Number of bytes written */
4669 http_write(http_t
*http
, /* I - HTTP connection */
4670 const char *buffer
, /* I - Buffer for data */
4671 size_t length
) /* I - Number of bytes to write */
4673 ssize_t tbytes
, /* Total bytes sent */
4674 bytes
; /* Bytes sent */
4677 DEBUG_printf(("2http_write(http=%p, buffer=%p, length=" CUPS_LLFMT
")", (void *)http
, (void *)buffer
, CUPS_LLCAST length
));
4683 DEBUG_printf(("3http_write: About to write %d bytes.", (int)length
));
4685 if (http
->timeout_value
> 0.0)
4688 struct pollfd pfd
; /* Polled file descriptor */
4690 fd_set output_set
; /* Output ready for write? */
4691 struct timeval timeout
; /* Timeout value */
4692 #endif /* HAVE_POLL */
4693 int nfds
; /* Result from select()/poll() */
4699 pfd
.events
= POLLOUT
;
4701 while ((nfds
= poll(&pfd
, 1, http
->wait_value
)) < 0 &&
4702 (errno
== EINTR
|| errno
== EAGAIN
))
4708 FD_ZERO(&output_set
);
4709 FD_SET(http
->fd
, &output_set
);
4711 timeout
.tv_sec
= http
->wait_value
/ 1000;
4712 timeout
.tv_usec
= 1000 * (http
->wait_value
% 1000);
4714 nfds
= select(http
->fd
+ 1, NULL
, &output_set
, NULL
, &timeout
);
4717 while (nfds
< 0 && (WSAGetLastError() == WSAEINTR
||
4718 WSAGetLastError() == WSAEWOULDBLOCK
));
4720 while (nfds
< 0 && (errno
== EINTR
|| errno
== EAGAIN
));
4721 # endif /* _WIN32 */
4722 #endif /* HAVE_POLL */
4726 http
->error
= errno
;
4729 else if (nfds
== 0 && (!http
->timeout_cb
|| !(*http
->timeout_cb
)(http
, http
->timeout_data
)))
4732 http
->error
= WSAEWOULDBLOCK
;
4734 http
->error
= EWOULDBLOCK
;
4744 bytes
= _httpTLSWrite(http
, buffer
, (int)length
);
4746 #endif /* HAVE_SSL */
4747 bytes
= send(http
->fd
, buffer
, length
, 0);
4749 DEBUG_printf(("3http_write: Write of " CUPS_LLFMT
" bytes returned "
4750 CUPS_LLFMT
".", CUPS_LLCAST length
, CUPS_LLCAST bytes
));
4755 if (WSAGetLastError() == WSAEINTR
)
4757 else if (WSAGetLastError() == WSAEWOULDBLOCK
)
4759 if (http
->timeout_cb
&& (*http
->timeout_cb
)(http
, http
->timeout_data
))
4762 http
->error
= WSAGetLastError();
4764 else if (WSAGetLastError() != http
->error
&&
4765 WSAGetLastError() != WSAECONNRESET
)
4767 http
->error
= WSAGetLastError();
4774 else if (errno
== EWOULDBLOCK
|| errno
== EAGAIN
)
4776 if (http
->timeout_cb
&& (*http
->timeout_cb
)(http
, http
->timeout_data
))
4778 else if (!http
->timeout_cb
&& errno
== EAGAIN
)
4781 http
->error
= errno
;
4783 else if (errno
!= http
->error
&& errno
!= ECONNRESET
)
4785 http
->error
= errno
;
4790 DEBUG_printf(("3http_write: error writing data (%s).",
4791 strerror(http
->error
)));
4798 length
-= (size_t)bytes
;
4802 http_debug_hex("http_write", buffer
- tbytes
, (int)tbytes
);
4805 DEBUG_printf(("3http_write: Returning " CUPS_LLFMT
".", CUPS_LLCAST tbytes
));
4812 * 'http_write_chunk()' - Write a chunked buffer.
4815 static ssize_t
/* O - Number bytes written */
4816 http_write_chunk(http_t
*http
, /* I - HTTP connection */
4817 const char *buffer
, /* I - Buffer to write */
4818 size_t length
) /* I - Length of buffer */
4820 char header
[16]; /* Chunk header */
4821 ssize_t bytes
; /* Bytes written */
4824 DEBUG_printf(("7http_write_chunk(http=%p, buffer=%p, length=" CUPS_LLFMT
")", (void *)http
, (void *)buffer
, CUPS_LLCAST length
));
4827 * Write the chunk header, data, and trailer.
4830 snprintf(header
, sizeof(header
), "%x\r\n", (unsigned)length
);
4831 if (http_write(http
, header
, strlen(header
)) < 0)
4833 DEBUG_puts("8http_write_chunk: http_write of length failed.");
4837 if ((bytes
= http_write(http
, buffer
, length
)) < 0)
4839 DEBUG_puts("8http_write_chunk: http_write of buffer failed.");
4843 if (http_write(http
, "\r\n", 2) < 0)
4845 DEBUG_puts("8http_write_chunk: http_write of CR LF failed.");