2 * "$Id: http.c 7850 2008-08-20 00:07:25Z mike $"
4 * HTTP routines for CUPS.
6 * Copyright 2007-2011 by Apple Inc.
7 * Copyright 1997-2007 by Easy Software Products, all rights reserved.
9 * This file contains Kerberos support code, copyright 2006 by
12 * These coded instructions, statements, and computer programs are the
13 * property of Apple Inc. and are protected by Federal copyright
14 * law. Distribution and use rights are outlined in the file "LICENSE.txt"
15 * which should have been included with this file. If this file is
16 * file is missing or damaged, see the license at "http://www.cups.org/".
18 * This file is subject to the Apple OS-Developed Software exception.
22 * httpAddCredential() - Allocates and adds a single credential to an
24 * _httpBIOMethods() - Get the OpenSSL BIO methods for HTTP
26 * httpBlocking() - Set blocking/non-blocking behavior on a
28 * httpCheck() - Check to see if there is a pending response
30 * httpClearCookie() - Clear the cookie value(s).
31 * httpClearFields() - Clear HTTP request fields.
32 * httpClose() - Close an HTTP connection.
33 * httpConnect() - Connect to a HTTP server.
34 * httpConnectEncrypt() - Connect to a HTTP server using encryption.
35 * httpCopyCredentials() - Copy the credentials associated with an
36 * encrypted connection.
37 * _httpConvertCredentials() - Convert credentials to the internal format.
38 * _httpCreate() - Create an unconnected HTTP connection.
39 * httpDelete() - Send a DELETE request to the server.
40 * _httpDisconnect() - Disconnect a HTTP connection.
41 * httpEncryption() - Set the required encryption on the link.
42 * httpError() - Get the last error on a connection.
43 * httpFlush() - Flush data from a HTTP connection.
44 * httpFlushWrite() - Flush data in write buffer.
45 * _httpFreeCredentials() - Free internal credentials.
46 * httpFreeCredentials() - Free an array of credentials.
47 * httpGet() - Send a GET request to the server.
48 * httpGetAuthString() - Get the current authorization string.
49 * httpGetBlocking() - Get the blocking/non-block state of a
51 * httpGetCookie() - Get any cookie data from the response.
52 * httpGetFd() - Get the file descriptor associated with a
54 * httpGetField() - Get a field value from a request/response.
55 * httpGetLength() - Get the amount of data remaining from the
56 * content-length or transfer-encoding fields.
57 * httpGetLength2() - Get the amount of data remaining from the
58 * content-length or transfer-encoding fields.
59 * httpGetStatus() - Get the status of the last HTTP request.
60 * httpGetSubField() - Get a sub-field value.
61 * httpGetSubField2() - Get a sub-field value.
62 * httpGets() - Get a line of text from a HTTP connection.
63 * httpHead() - Send a HEAD request to the server.
64 * httpInitialize() - Initialize the HTTP interface library and set
65 * the default HTTP proxy (if any).
66 * httpOptions() - Send an OPTIONS request to the server.
67 * _httpPeek() - Peek at data from a HTTP connection.
68 * httpPost() - Send a POST request to the server.
69 * httpPrintf() - Print a formatted string to a HTTP connection.
70 * httpPut() - Send a PUT request to the server.
71 * httpRead() - Read data from a HTTP connection.
72 * httpRead2() - Read data from a HTTP connection.
73 * _httpReadCDSA() - Read function for the CDSA library.
74 * _httpReadGNUTLS() - Read function for the GNU TLS library.
75 * httpReconnect() - Reconnect to a HTTP server.
76 * httpSetAuthString() - Set the current authorization string.
77 * httpSetCredentials() - Set the credentials associated with an
78 * encrypted connection.
79 * httpSetCookie() - Set the cookie value(s).
80 * httpSetExpect() - Set the Expect: header in a request.
81 * httpSetField() - Set the value of an HTTP header.
82 * httpSetLength() - Set the content-length and content-encoding.
83 * httpSetTimeout() - Set read/write timeouts and an optional
85 * httpTrace() - Send an TRACE request to the server.
86 * _httpUpdate() - Update the current HTTP status for incoming
88 * httpUpdate() - Update the current HTTP state for incoming
90 * _httpWait() - Wait for data available on a connection (no
92 * httpWait() - Wait for data available on a connection.
93 * httpWrite() - Write data to a HTTP connection.
94 * httpWrite2() - Write data to a HTTP connection.
95 * _httpWriteCDSA() - Write function for the CDSA library.
96 * _httpWriteGNUTLS() - Write function for the GNU TLS library.
97 * http_bio_ctrl() - Control the HTTP connection.
98 * http_bio_free() - Free OpenSSL data.
99 * http_bio_new() - Initialize an OpenSSL BIO structure.
100 * http_bio_puts() - Send a string for OpenSSL.
101 * http_bio_read() - Read data for OpenSSL.
102 * http_bio_write() - Write data for OpenSSL.
103 * http_debug_hex() - Do a hex dump of a buffer.
104 * http_field() - Return the field index for a field name.
105 * http_read_ssl() - Read from a SSL/TLS connection.
106 * http_locking_cb() - Lock/unlock a thread's mutex.
107 * http_send() - Send a request with all fields and the trailing
109 * http_set_credentials() - Set the SSL/TLS credentials.
110 * http_setup_ssl() - Set up SSL/TLS support on a connection.
111 * http_shutdown_ssl() - Shut down SSL/TLS on a connection.
112 * http_threadid_cb() - Return the current thread ID.
113 * http_upgrade() - Force upgrade to TLS encryption.
114 * http_write() - Write a buffer to a HTTP connection.
115 * http_write_chunk() - Write a chunked buffer.
116 * http_write_ssl() - Write to a SSL/TLS connection.
120 * Include necessary headers...
123 #include "cups-private.h"
129 # include <sys/time.h>
130 # include <sys/resource.h>
133 # include <sys/poll.h>
134 #endif /* HAVE_POLL */
138 * Some operating systems have done away with the Fxxxx constants for
139 * the fcntl() call; this works around that "feature"...
143 # define FNONBLK O_NONBLOCK
144 #endif /* !FNONBLK */
152 static void http_debug_hex(const char *prefix
, const char *buffer
,
155 static http_field_t
http_field(const char *name
);
156 static int http_send(http_t
*http
, http_state_t request
,
158 static int http_write(http_t
*http
, const char *buffer
,
160 static int http_write_chunk(http_t
*http
, const char *buffer
,
163 static int http_read_ssl(http_t
*http
, char *buf
, int len
);
164 # if defined(HAVE_CDSASSL) && defined(HAVE_SECCERTIFICATECOPYDATA)
165 static int http_set_credentials(http_t
*http
);
166 # endif /* HAVE_CDSASSL ** HAVE_SECCERTIFICATECOPYDATA */
167 static int http_setup_ssl(http_t
*http
);
168 static void http_shutdown_ssl(http_t
*http
);
169 static int http_upgrade(http_t
*http
);
170 static int http_write_ssl(http_t
*http
, const char *buf
, int len
);
171 #endif /* HAVE_SSL */
178 static const char * const http_fields
[] =
195 "If-Unmodified-since",
209 static const char * const http_states
[] =
229 #if defined(HAVE_SSL) && defined(HAVE_LIBSSL)
231 * BIO methods for OpenSSL...
234 static int http_bio_write(BIO
*h
, const char *buf
, int num
);
235 static int http_bio_read(BIO
*h
, char *buf
, int size
);
236 static int http_bio_puts(BIO
*h
, const char *str
);
237 static long http_bio_ctrl(BIO
*h
, int cmd
, long arg1
, void *arg2
);
238 static int http_bio_new(BIO
*h
);
239 static int http_bio_free(BIO
*data
);
241 static BIO_METHOD http_bio_methods
=
248 NULL
, /* http_bio_gets, */
254 #endif /* HAVE_SSL && HAVE_LIBSSL */
258 * 'httpAddCredential()' - Allocates and adds a single credential to an array.
260 * Use @code cupsArrayNew(NULL, NULL)@ to create a credentials array.
262 * @since CUPS 1.5/Mac OS X 10.7@
265 int /* O - 0 on success, -1 on error */
267 cups_array_t
*credentials
, /* I - Credentials array */
268 const void *data
, /* I - PEM-encoded X.509 data */
269 size_t datalen
) /* I - Length of data */
271 http_credential_t
*credential
; /* Credential data */
274 if ((credential
= malloc(sizeof(http_credential_t
))) != NULL
)
276 credential
->datalen
= datalen
;
278 if ((credential
->data
= malloc(datalen
)) != NULL
)
280 memcpy(credential
->data
, data
, datalen
);
281 cupsArrayAdd(credentials
, credential
);
292 #if defined(HAVE_SSL) && defined(HAVE_LIBSSL)
294 * '_httpBIOMethods()' - Get the OpenSSL BIO methods for HTTP connections.
297 BIO_METHOD
* /* O - BIO methods for OpenSSL */
298 _httpBIOMethods(void)
300 return (&http_bio_methods
);
302 #endif /* HAVE_SSL && HAVE_LIBSSL */
306 * 'httpBlocking()' - Set blocking/non-blocking behavior on a connection.
310 httpBlocking(http_t
*http
, /* I - Connection to server */
311 int b
) /* I - 1 = blocking, 0 = non-blocking */
319 * 'httpCheck()' - Check to see if there is a pending response from the server.
322 int /* O - 0 = no data, 1 = data available */
323 httpCheck(http_t
*http
) /* I - Connection to server */
325 return (httpWait(http
, 0));
330 * 'httpClearCookie()' - Clear the cookie value(s).
332 * @since CUPS 1.1.19/Mac OS X 10.3@
336 httpClearCookie(http_t
*http
) /* I - Connection to server */
350 * 'httpClearFields()' - Clear HTTP request fields.
354 httpClearFields(http_t
*http
) /* I - Connection to server */
358 memset(http
->fields
, 0, sizeof(http
->fields
));
359 if (http
->hostname
[0] == '/')
360 httpSetField(http
, HTTP_FIELD_HOST
, "localhost");
362 httpSetField(http
, HTTP_FIELD_HOST
, http
->hostname
);
364 if (http
->field_authorization
)
366 free(http
->field_authorization
);
367 http
->field_authorization
= NULL
;
370 http
->expect
= (http_status_t
)0;
376 * 'httpClose()' - Close an HTTP connection.
380 httpClose(http_t
*http
) /* I - Connection to server */
383 OM_uint32 minor_status
; /* Minor status code */
384 #endif /* HAVE_GSSAPI */
387 DEBUG_printf(("httpClose(http=%p)", http
));
390 * Range check input...
397 * Close any open connection...
400 _httpDisconnect(http
);
403 * Free memory used...
406 httpAddrFreeList(http
->addrlist
);
412 if (http
->gssctx
!= GSS_C_NO_CONTEXT
)
413 gss_delete_sec_context(&minor_status
, &http
->gssctx
, GSS_C_NO_BUFFER
);
415 if (http
->gssname
!= GSS_C_NO_NAME
)
416 gss_release_name(&minor_status
, &http
->gssname
);
417 #endif /* HAVE_GSSAPI */
419 #ifdef HAVE_AUTHORIZATION_H
421 AuthorizationFree(http
->auth_ref
, kAuthorizationFlagDefaults
);
422 #endif /* HAVE_AUTHORIZATION_H */
424 httpClearFields(http
);
426 if (http
->authstring
&& http
->authstring
!= http
->_authstring
)
427 free(http
->authstring
);
434 * 'httpConnect()' - Connect to a HTTP server.
436 * This function is deprecated - use @link httpConnectEncrypt@ instead.
441 http_t
* /* O - New HTTP connection */
442 httpConnect(const char *host
, /* I - Host to connect to */
443 int port
) /* I - Port number */
445 return (httpConnectEncrypt(host
, port
, HTTP_ENCRYPT_IF_REQUESTED
));
450 * 'httpConnectEncrypt()' - Connect to a HTTP server using encryption.
453 http_t
* /* O - New HTTP connection */
455 const char *host
, /* I - Host to connect to */
456 int port
, /* I - Port number */
457 http_encryption_t encryption
) /* I - Type of encryption to use */
459 http_t
*http
; /* New HTTP connection */
462 DEBUG_printf(("httpConnectEncrypt(host=\"%s\", port=%d, encryption=%d)",
463 host
, port
, encryption
));
466 * Create the HTTP structure...
469 if ((http
= _httpCreate(host
, port
, NULL
, encryption
, AF_UNSPEC
)) == NULL
)
473 * Connect to the remote system...
476 if (!httpReconnect(http
))
480 * Could not connect to any known address - bail out!
483 httpAddrFreeList(http
->addrlist
);
492 * 'httpCopyCredentials()' - Copy the credentials associated with an encrypted
495 * @since CUPS 1.5/Mac OS X 10.7@
498 int /* O - Status of call (0 = success) */
500 http_t
*http
, /* I - Connection to server */
501 cups_array_t
**credentials
) /* O - Array of credentials */
504 # elif defined(HAVE_GNUTLS)
505 # elif defined(HAVE_CDSASSL) && defined(HAVE_SECCERTIFICATECOPYDATA)
506 OSStatus error
; /* Error code */
507 CFIndex count
; /* Number of credentials */
508 CFArrayRef peerCerts
; /* Peer certificates */
509 SecCertificateRef secCert
; /* Certificate reference */
510 CFDataRef data
; /* Certificate data */
511 int i
; /* Looping var */
512 # elif defined(HAVE_SSPISSL)
513 # endif /* HAVE_LIBSSL */
519 if (!http
|| !http
->tls
|| !credentials
)
525 # elif defined(HAVE_GNUTLS)
528 # elif defined(HAVE_CDSASSL) && defined(HAVE_SECCERTIFICATECOPYDATA)
529 if (!(error
= SSLCopyPeerCertificates(http
->tls
, &peerCerts
)) && peerCerts
)
531 if ((*credentials
= cupsArrayNew(NULL
, NULL
)) != NULL
)
533 for (i
= 0, count
= CFArrayGetCount(peerCerts
); i
< count
; i
++)
535 secCert
= (SecCertificateRef
)CFArrayGetValueAtIndex(peerCerts
, i
);
536 if ((data
= SecCertificateCopyData(secCert
)))
538 httpAddCredential(*credentials
, CFDataGetBytePtr(data
),
539 CFDataGetLength(data
));
545 CFRelease(peerCerts
);
550 # elif defined(HAVE_SSPISSL)
555 # endif /* HAVE_LIBSSL */
560 * '_httpConvertCredentials()' - Convert credentials to the internal format.
563 http_tls_credentials_t
/* O - Internal credentials */
564 _httpConvertCredentials(
565 cups_array_t
*credentials
) /* I - Array of credentials */
573 # elif defined(HAVE_GNUTLS)
576 # elif defined(HAVE_CDSASSL) && defined(HAVE_SECCERTIFICATECOPYDATA)
577 CFMutableArrayRef peerCerts
; /* Peer credentials reference */
578 SecCertificateRef secCert
; /* Certificate reference */
579 CFDataRef data
; /* Credential data reference */
580 http_credential_t
*credential
; /* Credential data */
583 if ((peerCerts
= CFArrayCreateMutable(kCFAllocatorDefault
,
584 cupsArrayCount(credentials
),
585 &kCFTypeArrayCallBacks
)) == NULL
)
588 for (credential
= (http_credential_t
*)cupsArrayFirst(credentials
);
590 credential
= (http_credential_t
*)cupsArrayNext(credentials
))
592 if ((data
= CFDataCreate(kCFAllocatorDefault
, credential
->data
,
593 credential
->datalen
)))
595 if ((secCert
= SecCertificateCreateWithData(kCFAllocatorDefault
, data
))
598 CFArrayAppendValue(peerCerts
, secCert
);
608 # elif defined(HAVE_SSPISSL)
613 # endif /* HAVE_LIBSSL */
618 * '_httpCreate()' - Create an unconnected HTTP connection.
621 http_t
* /* O - HTTP connection */
623 const char *host
, /* I - Hostname */
624 int port
, /* I - Port number */
625 http_addrlist_t
*addrlist
, /* I - Address list or NULL */
626 http_encryption_t encryption
, /* I - Encryption to use */
627 int family
) /* I - Address family or AF_UNSPEC */
629 http_t
*http
; /* New HTTP connection */
630 char service
[255]; /* Service name */
633 DEBUG_printf(("4_httpCreate(host=\"%s\", port=%d, encryption=%d)",
634 host
, port
, encryption
));
645 sprintf(service
, "%d", port
);
648 if ((addrlist
= httpAddrGetList(host
, family
, service
)) == NULL
)
652 * Allocate memory for the structure...
655 if ((http
= calloc(sizeof(http_t
), 1)) == NULL
)
657 httpAddrFreeList(addrlist
);
662 * Initialize the HTTP data...
665 http
->activity
= time(NULL
);
666 http
->addrlist
= addrlist
;
670 http
->gssctx
= GSS_C_NO_CONTEXT
;
671 http
->gssname
= GSS_C_NO_NAME
;
672 #endif /* HAVE_GSSAPI */
673 http
->version
= HTTP_1_1
;
675 strlcpy(http
->hostname
, host
, sizeof(http
->hostname
));
677 if (port
== 443) /* Always use encryption for https */
678 http
->encryption
= HTTP_ENCRYPT_ALWAYS
;
680 http
->encryption
= encryption
;
683 * Return the new structure...
691 * 'httpDelete()' - Send a DELETE request to the server.
694 int /* O - Status of call (0 = success) */
695 httpDelete(http_t
*http
, /* I - Connection to server */
696 const char *uri
) /* I - URI to delete */
698 return (http_send(http
, HTTP_DELETE
, uri
));
703 * '_httpDisconnect()' - Disconnect a HTTP connection.
707 _httpDisconnect(http_t
*http
) /* I - Connection to server */
711 http_shutdown_ssl(http
);
712 #endif /* HAVE_SSL */
715 closesocket(http
->fd
);
725 * 'httpEncryption()' - Set the required encryption on the link.
728 int /* O - -1 on error, 0 on success */
729 httpEncryption(http_t
*http
, /* I - Connection to server */
730 http_encryption_t e
) /* I - New encryption preference */
732 DEBUG_printf(("httpEncryption(http=%p, e=%d)", http
, e
));
738 http
->encryption
= e
;
740 if ((http
->encryption
== HTTP_ENCRYPT_ALWAYS
&& !http
->tls
) ||
741 (http
->encryption
== HTTP_ENCRYPT_NEVER
&& http
->tls
))
742 return (httpReconnect(http
));
743 else if (http
->encryption
== HTTP_ENCRYPT_REQUIRED
&& !http
->tls
)
744 return (http_upgrade(http
));
748 if (e
== HTTP_ENCRYPT_ALWAYS
|| e
== HTTP_ENCRYPT_REQUIRED
)
752 #endif /* HAVE_SSL */
757 * 'httpError()' - Get the last error on a connection.
760 int /* O - Error code (errno) value */
761 httpError(http_t
*http
) /* I - Connection to server */
764 return (http
->error
);
771 * 'httpFlush()' - Flush data from a HTTP connection.
775 httpFlush(http_t
*http
) /* I - Connection to server */
777 char buffer
[8192]; /* Junk buffer */
778 int blocking
; /* To block or not to block */
779 http_state_t oldstate
; /* Old state */
782 DEBUG_printf(("httpFlush(http=%p), state=%s", http
,
783 http_states
[http
->state
]));
786 * Temporarily set non-blocking mode so we don't get stuck in httpRead()...
789 blocking
= http
->blocking
;
793 * Read any data we can...
796 oldstate
= http
->state
;
797 while (httpRead2(http
, buffer
, sizeof(buffer
)) > 0);
800 * Restore blocking and reset the connection if we didn't get all of
801 * the remaining data...
804 http
->blocking
= blocking
;
806 if (http
->state
== oldstate
&& http
->state
!= HTTP_WAITING
&& http
->fd
>= 0)
809 * Didn't get the data back, so close the current connection.
812 http
->state
= HTTP_WAITING
;
816 http_shutdown_ssl(http
);
817 #endif /* HAVE_SSL */
820 closesocket(http
->fd
);
831 * 'httpFlushWrite()' - Flush data in write buffer.
833 * @since CUPS 1.2/Mac OS X 10.5@
836 int /* O - Bytes written or -1 on error */
837 httpFlushWrite(http_t
*http
) /* I - Connection to server */
839 int bytes
; /* Bytes written */
842 DEBUG_printf(("httpFlushWrite(http=%p)", http
));
844 if (!http
|| !http
->wused
)
846 DEBUG_puts(http
? "1httpFlushWrite: Write buffer is empty." :
847 "1httpFlushWrite: No connection.");
851 if (http
->data_encoding
== HTTP_ENCODE_CHUNKED
)
852 bytes
= http_write_chunk(http
, http
->wbuffer
, http
->wused
);
854 bytes
= http_write(http
, http
->wbuffer
, http
->wused
);
858 DEBUG_printf(("1httpFlushWrite: Returning %d, errno=%d.", bytes
, errno
));
865 * '_httpFreeCredentials()' - Free internal credentials.
869 _httpFreeCredentials(
870 http_tls_credentials_t credentials
) /* I - Internal credentials */
878 #elif defined(HAVE_GNUTLS)
881 #elif defined(HAVE_CDSASSL)
882 CFRelease(credentials
);
884 #elif defined(HAVE_SSPISSL)
887 #endif /* HAVE_LIBSSL */
892 * 'httpFreeCredentials()' - Free an array of credentials.
897 cups_array_t
*credentials
) /* I - Array of credentials */
899 http_credential_t
*credential
; /* Credential */
902 for (credential
= (http_credential_t
*)cupsArrayFirst(credentials
);
904 credential
= (http_credential_t
*)cupsArrayNext(credentials
))
906 cupsArrayRemove(credentials
, credential
);
907 free((void *)credential
->data
);
911 cupsArrayDelete(credentials
);
916 * 'httpGet()' - Send a GET request to the server.
919 int /* O - Status of call (0 = success) */
920 httpGet(http_t
*http
, /* I - Connection to server */
921 const char *uri
) /* I - URI to get */
923 return (http_send(http
, HTTP_GET
, uri
));
928 * 'httpGetAuthString()' - Get the current authorization string.
930 * The authorization string is set by cupsDoAuthentication() and
931 * httpSetAuthString(). Use httpGetAuthString() to retrieve the
932 * string to use with httpSetField() for the HTTP_FIELD_AUTHORIZATION
935 * @since CUPS 1.3/Mac OS X 10.5@
938 char * /* O - Authorization string */
939 httpGetAuthString(http_t
*http
) /* I - Connection to server */
942 return (http
->authstring
);
949 * 'httpGetBlocking()' - Get the blocking/non-block state of a connection.
951 * @since CUPS 1.2/Mac OS X 10.5@
954 int /* O - 1 if blocking, 0 if non-blocking */
955 httpGetBlocking(http_t
*http
) /* I - Connection to server */
957 return (http
? http
->blocking
: 0);
962 * 'httpGetCookie()' - Get any cookie data from the response.
964 * @since CUPS 1.1.19/Mac OS X 10.3@
967 const char * /* O - Cookie data or NULL */
968 httpGetCookie(http_t
*http
) /* I - HTTP connecion */
970 return (http
? http
->cookie
: NULL
);
975 * 'httpGetFd()' - Get the file descriptor associated with a connection.
977 * @since CUPS 1.2/Mac OS X 10.5@
980 int /* O - File descriptor or -1 if none */
981 httpGetFd(http_t
*http
) /* I - Connection to server */
983 return (http
? http
->fd
: -1);
988 * 'httpGetField()' - Get a field value from a request/response.
991 const char * /* O - Field value */
992 httpGetField(http_t
*http
, /* I - Connection to server */
993 http_field_t field
) /* I - Field to get */
995 if (!http
|| field
<= HTTP_FIELD_UNKNOWN
|| field
>= HTTP_FIELD_MAX
)
997 else if (field
== HTTP_FIELD_AUTHORIZATION
&&
998 http
->field_authorization
)
1001 * Special case for WWW-Authenticate: as its contents can be
1002 * longer than HTTP_MAX_VALUE...
1005 return (http
->field_authorization
);
1008 return (http
->fields
[field
]);
1013 * 'httpGetLength()' - Get the amount of data remaining from the
1014 * content-length or transfer-encoding fields.
1016 * This function is deprecated and will not return lengths larger than
1017 * 2^31 - 1; use httpGetLength2() instead.
1022 int /* O - Content length */
1023 httpGetLength(http_t
*http
) /* I - Connection to server */
1026 * Get the read content length and return the 32-bit value.
1031 httpGetLength2(http
);
1033 return (http
->_data_remaining
);
1041 * 'httpGetLength2()' - Get the amount of data remaining from the
1042 * content-length or transfer-encoding fields.
1044 * This function returns the complete content length, even for
1045 * content larger than 2^31 - 1.
1047 * @since CUPS 1.2/Mac OS X 10.5@
1050 off_t
/* O - Content length */
1051 httpGetLength2(http_t
*http
) /* I - Connection to server */
1053 DEBUG_printf(("2httpGetLength2(http=%p), state=%s", http
,
1054 http_states
[http
->state
]));
1059 if (!_cups_strcasecmp(http
->fields
[HTTP_FIELD_TRANSFER_ENCODING
], "chunked"))
1061 DEBUG_puts("4httpGetLength2: chunked request!");
1063 http
->data_encoding
= HTTP_ENCODE_CHUNKED
;
1064 http
->data_remaining
= 0;
1068 http
->data_encoding
= HTTP_ENCODE_LENGTH
;
1071 * The following is a hack for HTTP servers that don't send a
1072 * content-length or transfer-encoding field...
1074 * If there is no content-length then the connection must close
1075 * after the transfer is complete...
1078 if (!http
->fields
[HTTP_FIELD_CONTENT_LENGTH
][0])
1081 * Default content length is 0 for errors and 2^31-1 for other
1082 * successful requests...
1085 if (http
->status
>= HTTP_MULTIPLE_CHOICES
)
1086 http
->data_remaining
= 0;
1088 http
->data_remaining
= 2147483647;
1091 http
->data_remaining
= strtoll(http
->fields
[HTTP_FIELD_CONTENT_LENGTH
],
1094 DEBUG_printf(("4httpGetLength2: content_length=" CUPS_LLFMT
,
1095 CUPS_LLCAST http
->data_remaining
));
1098 if (http
->data_remaining
<= INT_MAX
)
1099 http
->_data_remaining
= (int)http
->data_remaining
;
1101 http
->_data_remaining
= INT_MAX
;
1103 return (http
->data_remaining
);
1108 * 'httpGetStatus()' - Get the status of the last HTTP request.
1110 * @since CUPS 1.2/Mac OS X 10.5@
1113 http_status_t
/* O - HTTP status */
1114 httpGetStatus(http_t
*http
) /* I - Connection to server */
1116 return (http
? http
->status
: HTTP_ERROR
);
1121 * 'httpGetSubField()' - Get a sub-field value.
1126 char * /* O - Value or NULL */
1127 httpGetSubField(http_t
*http
, /* I - Connection to server */
1128 http_field_t field
, /* I - Field index */
1129 const char *name
, /* I - Name of sub-field */
1130 char *value
) /* O - Value string */
1132 return (httpGetSubField2(http
, field
, name
, value
, HTTP_MAX_VALUE
));
1137 * 'httpGetSubField2()' - Get a sub-field value.
1139 * @since CUPS 1.2/Mac OS X 10.5@
1142 char * /* O - Value or NULL */
1143 httpGetSubField2(http_t
*http
, /* I - Connection to server */
1144 http_field_t field
, /* I - Field index */
1145 const char *name
, /* I - Name of sub-field */
1146 char *value
, /* O - Value string */
1147 int valuelen
) /* I - Size of value buffer */
1149 const char *fptr
; /* Pointer into field */
1150 char temp
[HTTP_MAX_VALUE
], /* Temporary buffer for name */
1151 *ptr
, /* Pointer into string buffer */
1152 *end
; /* End of value buffer */
1154 DEBUG_printf(("2httpGetSubField2(http=%p, field=%d, name=\"%s\", value=%p, "
1155 "valuelen=%d)", http
, field
, name
, value
, valuelen
));
1157 if (!http
|| !name
|| !value
|| valuelen
< 2 ||
1158 field
<= HTTP_FIELD_UNKNOWN
|| field
>= HTTP_FIELD_MAX
)
1161 end
= value
+ valuelen
- 1;
1163 for (fptr
= http
->fields
[field
]; *fptr
;)
1166 * Skip leading whitespace...
1169 while (_cups_isspace(*fptr
))
1179 * Get the sub-field name...
1183 *fptr
&& *fptr
!= '=' && !_cups_isspace(*fptr
) &&
1184 ptr
< (temp
+ sizeof(temp
) - 1);
1189 DEBUG_printf(("4httpGetSubField2: name=\"%s\"", temp
));
1192 * Skip trailing chars up to the '='...
1195 while (_cups_isspace(*fptr
))
1205 * Skip = and leading whitespace...
1210 while (_cups_isspace(*fptr
))
1216 * Read quoted string...
1219 for (ptr
= value
, fptr
++;
1220 *fptr
&& *fptr
!= '\"' && ptr
< end
;
1225 while (*fptr
&& *fptr
!= '\"')
1234 * Read unquoted string...
1238 *fptr
&& !_cups_isspace(*fptr
) && *fptr
!= ',' && ptr
< end
;
1243 while (*fptr
&& !_cups_isspace(*fptr
) && *fptr
!= ',')
1247 DEBUG_printf(("4httpGetSubField2: value=\"%s\"", value
));
1250 * See if this is the one...
1253 if (!strcmp(name
, temp
))
1255 DEBUG_printf(("3httpGetSubField2: Returning \"%s\"", value
));
1262 DEBUG_puts("3httpGetSubField2: Returning NULL");
1269 * 'httpGets()' - Get a line of text from a HTTP connection.
1272 char * /* O - Line or NULL */
1273 httpGets(char *line
, /* I - Line to read into */
1274 int length
, /* I - Max length of buffer */
1275 http_t
*http
) /* I - Connection to server */
1277 char *lineptr
, /* Pointer into line */
1278 *lineend
, /* End of line */
1279 *bufptr
, /* Pointer into input buffer */
1280 *bufend
; /* Pointer to end of buffer */
1281 int bytes
, /* Number of bytes read */
1282 eol
; /* End-of-line? */
1285 DEBUG_printf(("2httpGets(line=%p, length=%d, http=%p)", line
, length
, http
));
1287 if (http
== NULL
|| line
== NULL
)
1291 * Read a line from the buffer...
1296 lineend
= line
+ length
- 1;
1299 while (lineptr
< lineend
)
1302 * Pre-load the buffer as needed...
1311 while (http
->used
== 0)
1314 * No newline; see if there is more data to be read...
1317 while (!_httpWait(http
, http
->blocking
? 30000 : 10000, 1))
1319 if (http
->timeout_cb
&& (*http
->timeout_cb
)(http
, http
->timeout_data
))
1322 DEBUG_puts("3httpGets: Timed out!");
1324 http
->error
= WSAETIMEDOUT
;
1326 http
->error
= ETIMEDOUT
;
1333 bytes
= http_read_ssl(http
, http
->buffer
+ http
->used
,
1334 HTTP_MAX_BUFFER
- http
->used
);
1336 #endif /* HAVE_SSL */
1337 bytes
= recv(http
->fd
, http
->buffer
+ http
->used
,
1338 HTTP_MAX_BUFFER
- http
->used
, 0);
1340 DEBUG_printf(("4httpGets: read %d bytes...", bytes
));
1345 * Nope, can't get a line this time...
1349 DEBUG_printf(("3httpGets: recv() error %d!", WSAGetLastError()));
1351 if (WSAGetLastError() == WSAEINTR
)
1353 else if (WSAGetLastError() == WSAEWOULDBLOCK
)
1355 if (http
->timeout_cb
&& (*http
->timeout_cb
)(http
, http
->timeout_data
))
1358 http
->error
= WSAGetLastError();
1360 else if (WSAGetLastError() != http
->error
)
1362 http
->error
= WSAGetLastError();
1367 DEBUG_printf(("3httpGets: recv() error %d!", errno
));
1371 else if (errno
== EWOULDBLOCK
|| errno
== EAGAIN
)
1373 if (http
->timeout_cb
&& (*http
->timeout_cb
)(http
, http
->timeout_data
))
1375 else if (!http
->timeout_cb
&& errno
== EAGAIN
)
1378 http
->error
= errno
;
1380 else if (errno
!= http
->error
)
1382 http
->error
= errno
;
1389 else if (bytes
== 0)
1391 http
->error
= EPIPE
;
1397 * Yup, update the amount used...
1400 http
->used
+= bytes
;
1404 * Now copy as much of the current line as possible...
1407 for (bufptr
= http
->buffer
, bufend
= http
->buffer
+ http
->used
;
1408 lineptr
< lineend
&& bufptr
< bufend
;)
1410 if (*bufptr
== 0x0a)
1416 else if (*bufptr
== 0x0d)
1419 *lineptr
++ = *bufptr
++;
1422 http
->used
-= (int)(bufptr
- http
->buffer
);
1424 memmove(http
->buffer
, bufptr
, http
->used
);
1432 http
->activity
= time(NULL
);
1436 DEBUG_printf(("3httpGets: Returning \"%s\"", line
));
1442 DEBUG_puts("3httpGets: No new line available!");
1449 * 'httpHead()' - Send a HEAD request to the server.
1452 int /* O - Status of call (0 = success) */
1453 httpHead(http_t
*http
, /* I - Connection to server */
1454 const char *uri
) /* I - URI for head */
1456 DEBUG_printf(("httpHead(http=%p, uri=\"%s\")", http
, uri
));
1457 return (http_send(http
, HTTP_HEAD
, uri
));
1462 * 'httpInitialize()' - Initialize the HTTP interface library and set the
1463 * default HTTP proxy (if any).
1467 httpInitialize(void)
1469 static int initialized
= 0; /* Have we been called before? */
1471 WSADATA winsockdata
; /* WinSock data */
1474 int i
; /* Looping var */
1475 unsigned char data
[1024]; /* Seed data */
1476 #endif /* HAVE_LIBSSL */
1482 _cupsGlobalUnlock();
1487 WSAStartup(MAKEWORD(2,2), &winsockdata
);
1489 #elif !defined(SO_NOSIGPIPE)
1491 * Ignore SIGPIPE signals...
1495 sigset(SIGPIPE
, SIG_IGN
);
1497 # elif defined(HAVE_SIGACTION)
1498 struct sigaction action
; /* POSIX sigaction data */
1501 memset(&action
, 0, sizeof(action
));
1502 action
.sa_handler
= SIG_IGN
;
1503 sigaction(SIGPIPE
, &action
, NULL
);
1506 signal(SIGPIPE
, SIG_IGN
);
1507 # endif /* !SO_NOSIGPIPE */
1512 * Initialize GNU TLS...
1515 gnutls_global_init();
1517 #elif defined(HAVE_LIBSSL)
1519 * Initialize OpenSSL...
1522 SSL_load_error_strings();
1526 * Using the current time is a dubious random seed, but on some systems
1527 * it is the best we can do (on others, this seed isn't even used...)
1530 CUPS_SRAND(time(NULL
));
1532 for (i
= 0; i
< sizeof(data
); i
++)
1533 data
[i
] = CUPS_RAND();
1535 RAND_seed(data
, sizeof(data
));
1536 #endif /* HAVE_GNUTLS */
1539 _cupsGlobalUnlock();
1544 * 'httpOptions()' - Send an OPTIONS request to the server.
1547 int /* O - Status of call (0 = success) */
1548 httpOptions(http_t
*http
, /* I - Connection to server */
1549 const char *uri
) /* I - URI for options */
1551 return (http_send(http
, HTTP_OPTIONS
, uri
));
1556 * '_httpPeek()' - Peek at data from a HTTP connection.
1558 * This function copies available data from the given HTTP connection, reading
1559 * a buffer as needed. The data is still available for reading using
1560 * @link httpRead@ or @link httpRead2@.
1562 * For non-blocking connections the usual timeouts apply.
1565 ssize_t
/* O - Number of bytes copied */
1566 _httpPeek(http_t
*http
, /* I - Connection to server */
1567 char *buffer
, /* I - Buffer for data */
1568 size_t length
) /* I - Maximum number of bytes */
1570 ssize_t bytes
; /* Bytes read */
1571 char len
[32]; /* Length string */
1574 DEBUG_printf(("_httpPeek(http=%p, buffer=%p, length=" CUPS_LLFMT
")",
1575 http
, buffer
, CUPS_LLCAST length
));
1577 if (http
== NULL
|| buffer
== NULL
)
1580 http
->activity
= time(NULL
);
1586 if (http
->data_encoding
== HTTP_ENCODE_CHUNKED
&&
1587 http
->data_remaining
<= 0)
1589 DEBUG_puts("2_httpPeek: Getting chunk length...");
1591 if (httpGets(len
, sizeof(len
), http
) == NULL
)
1593 DEBUG_puts("1_httpPeek: Could not get length!");
1597 http
->data_remaining
= strtoll(len
, NULL
, 16);
1598 if (http
->data_remaining
< 0)
1600 DEBUG_puts("1_httpPeek: Negative chunk length!");
1605 DEBUG_printf(("2_httpPeek: data_remaining=" CUPS_LLFMT
,
1606 CUPS_LLCAST http
->data_remaining
));
1608 if (http
->data_remaining
<= 0)
1611 * A zero-length chunk ends a transfer; unless we are reading POST
1615 if (http
->data_encoding
== HTTP_ENCODE_CHUNKED
)
1616 httpGets(len
, sizeof(len
), http
);
1618 if (http
->state
== HTTP_POST_RECV
)
1621 http
->state
= HTTP_WAITING
;
1624 * Prevent future reads for this request...
1627 http
->data_encoding
= HTTP_ENCODE_LENGTH
;
1631 else if (length
> (size_t)http
->data_remaining
)
1632 length
= (size_t)http
->data_remaining
;
1634 if (http
->used
== 0)
1637 * Buffer small reads for better performance...
1640 if (!http
->blocking
)
1642 while (!httpWait(http
, 10000))
1644 if (http
->timeout_cb
&& (*http
->timeout_cb
)(http
, http
->timeout_data
))
1651 if (http
->data_remaining
> sizeof(http
->buffer
))
1652 bytes
= sizeof(http
->buffer
);
1654 bytes
= http
->data_remaining
;
1658 bytes
= http_read_ssl(http
, http
->buffer
, bytes
);
1660 #endif /* HAVE_SSL */
1662 DEBUG_printf(("2_httpPeek: reading %d bytes from socket into buffer...",
1665 bytes
= recv(http
->fd
, http
->buffer
, bytes
, 0);
1667 DEBUG_printf(("2_httpPeek: read %d bytes from socket into buffer...",
1676 if (WSAGetLastError() != WSAEINTR
&& WSAGetLastError() != WSAEWOULDBLOCK
)
1678 http
->error
= WSAGetLastError();
1682 if (errno
!= EINTR
&& errno
!= EAGAIN
)
1684 http
->error
= errno
;
1691 http
->error
= EPIPE
;
1698 if (length
> (size_t)http
->used
)
1699 length
= (size_t)http
->used
;
1701 bytes
= (ssize_t
)length
;
1703 DEBUG_printf(("2_httpPeek: grabbing %d bytes from input buffer...",
1706 memcpy(buffer
, http
->buffer
, length
);
1714 if (WSAGetLastError() == WSAEINTR
|| WSAGetLastError() == WSAEWOULDBLOCK
)
1717 http
->error
= WSAGetLastError();
1719 if (errno
== EINTR
|| errno
== EAGAIN
)
1722 http
->error
= errno
;
1725 else if (bytes
== 0)
1727 http
->error
= EPIPE
;
1732 http_debug_hex("_httpPeek", buffer
, (int)bytes
);
1740 * 'httpPost()' - Send a POST request to the server.
1743 int /* O - Status of call (0 = success) */
1744 httpPost(http_t
*http
, /* I - Connection to server */
1745 const char *uri
) /* I - URI for post */
1747 return (http_send(http
, HTTP_POST
, uri
));
1752 * 'httpPrintf()' - Print a formatted string to a HTTP connection.
1757 int /* O - Number of bytes written */
1758 httpPrintf(http_t
*http
, /* I - Connection to server */
1759 const char *format
, /* I - printf-style format string */
1760 ...) /* I - Additional args as needed */
1762 int bytes
; /* Number of bytes to write */
1763 char buf
[16384]; /* Buffer for formatted string */
1764 va_list ap
; /* Variable argument pointer */
1767 DEBUG_printf(("2httpPrintf(http=%p, format=\"%s\", ...)", http
, format
));
1769 va_start(ap
, format
);
1770 bytes
= vsnprintf(buf
, sizeof(buf
), format
, ap
);
1773 DEBUG_printf(("3httpPrintf: %s", buf
));
1775 if (http
->data_encoding
== HTTP_ENCODE_FIELDS
)
1776 return (httpWrite2(http
, buf
, bytes
));
1781 DEBUG_puts("4httpPrintf: flushing existing data...");
1783 if (httpFlushWrite(http
) < 0)
1787 return (http_write(http
, buf
, bytes
));
1793 * 'httpPut()' - Send a PUT request to the server.
1796 int /* O - Status of call (0 = success) */
1797 httpPut(http_t
*http
, /* I - Connection to server */
1798 const char *uri
) /* I - URI to put */
1800 DEBUG_printf(("httpPut(http=%p, uri=\"%s\")", http
, uri
));
1801 return (http_send(http
, HTTP_PUT
, uri
));
1806 * 'httpRead()' - Read data from a HTTP connection.
1808 * This function is deprecated. Use the httpRead2() function which can
1809 * read more than 2GB of data.
1814 int /* O - Number of bytes read */
1815 httpRead(http_t
*http
, /* I - Connection to server */
1816 char *buffer
, /* I - Buffer for data */
1817 int length
) /* I - Maximum number of bytes */
1819 return ((int)httpRead2(http
, buffer
, length
));
1824 * 'httpRead2()' - Read data from a HTTP connection.
1826 * @since CUPS 1.2/Mac OS X 10.5@
1829 ssize_t
/* O - Number of bytes read */
1830 httpRead2(http_t
*http
, /* I - Connection to server */
1831 char *buffer
, /* I - Buffer for data */
1832 size_t length
) /* I - Maximum number of bytes */
1834 ssize_t bytes
; /* Bytes read */
1835 char len
[32]; /* Length string */
1838 DEBUG_printf(("httpRead2(http=%p, buffer=%p, length=" CUPS_LLFMT
")",
1839 http
, buffer
, CUPS_LLCAST length
));
1841 if (http
== NULL
|| buffer
== NULL
)
1844 http
->activity
= time(NULL
);
1850 if (http
->data_encoding
== HTTP_ENCODE_CHUNKED
&&
1851 http
->data_remaining
<= 0)
1853 DEBUG_puts("2httpRead2: Getting chunk length...");
1855 if (httpGets(len
, sizeof(len
), http
) == NULL
)
1857 DEBUG_puts("1httpRead2: Could not get length!");
1861 http
->data_remaining
= strtoll(len
, NULL
, 16);
1862 if (http
->data_remaining
< 0)
1864 DEBUG_puts("1httpRead2: Negative chunk length!");
1869 DEBUG_printf(("2httpRead2: data_remaining=" CUPS_LLFMT
,
1870 CUPS_LLCAST http
->data_remaining
));
1872 if (http
->data_remaining
<= 0)
1875 * A zero-length chunk ends a transfer; unless we are reading POST
1879 if (http
->data_encoding
== HTTP_ENCODE_CHUNKED
)
1880 httpGets(len
, sizeof(len
), http
);
1882 if (http
->state
== HTTP_POST_RECV
)
1885 http
->state
= HTTP_WAITING
;
1888 * Prevent future reads for this request...
1891 http
->data_encoding
= HTTP_ENCODE_LENGTH
;
1895 else if (length
> (size_t)http
->data_remaining
)
1896 length
= (size_t)http
->data_remaining
;
1898 if (http
->used
== 0 && length
<= 256)
1901 * Buffer small reads for better performance...
1904 if (!http
->blocking
)
1906 while (!httpWait(http
, 10000))
1908 if (http
->timeout_cb
&& (*http
->timeout_cb
)(http
, http
->timeout_data
))
1915 if (http
->data_remaining
> sizeof(http
->buffer
))
1916 bytes
= sizeof(http
->buffer
);
1918 bytes
= http
->data_remaining
;
1922 bytes
= http_read_ssl(http
, http
->buffer
, bytes
);
1924 #endif /* HAVE_SSL */
1926 DEBUG_printf(("2httpRead2: reading %d bytes from socket into buffer...",
1929 bytes
= recv(http
->fd
, http
->buffer
, bytes
, 0);
1931 DEBUG_printf(("2httpRead2: read %d bytes from socket into buffer...",
1940 if (WSAGetLastError() != WSAEINTR
)
1942 http
->error
= WSAGetLastError();
1945 else if (WSAGetLastError() == WSAEWOULDBLOCK
)
1947 if (!http
->timeout_cb
|| !(*http
->timeout_cb
)(http
, http
->timeout_data
))
1949 http
->error
= WSAEWOULDBLOCK
;
1954 if (errno
== EWOULDBLOCK
|| errno
== EAGAIN
)
1956 if (http
->timeout_cb
&& !(*http
->timeout_cb
)(http
, http
->timeout_data
))
1958 http
->error
= errno
;
1961 else if (!http
->timeout_cb
&& errno
!= EAGAIN
)
1963 http
->error
= errno
;
1967 else if (errno
!= EINTR
)
1969 http
->error
= errno
;
1976 http
->error
= EPIPE
;
1983 if (length
> (size_t)http
->used
)
1984 length
= (size_t)http
->used
;
1986 bytes
= (ssize_t
)length
;
1988 DEBUG_printf(("2httpRead2: grabbing %d bytes from input buffer...",
1991 memcpy(buffer
, http
->buffer
, length
);
1992 http
->used
-= (int)length
;
1995 memmove(http
->buffer
, http
->buffer
+ length
, http
->used
);
2000 if (!http
->blocking
)
2002 while (!httpWait(http
, 10000))
2004 if (http
->timeout_cb
&& (*http
->timeout_cb
)(http
, http
->timeout_data
))
2011 bytes
= (ssize_t
)http_read_ssl(http
, buffer
, (int)length
);
2013 #endif /* HAVE_SSL */
2016 if (!http
->blocking
)
2018 while (!httpWait(http
, 10000))
2020 if (http
->timeout_cb
&& (*http
->timeout_cb
)(http
, http
->timeout_data
))
2027 DEBUG_printf(("2httpRead2: reading " CUPS_LLFMT
" bytes from socket...",
2028 CUPS_LLCAST length
));
2031 while ((bytes
= (ssize_t
)recv(http
->fd
, buffer
, (int)length
, 0)) < 0)
2033 if (WSAGetLastError() == WSAEWOULDBLOCK
)
2035 if (!http
->timeout_cb
|| !(*http
->timeout_cb
)(http
, http
->timeout_data
))
2038 else if (WSAGetLastError() != WSAEINTR
)
2042 while ((bytes
= recv(http
->fd
, buffer
, length
, 0)) < 0)
2044 if (errno
== EWOULDBLOCK
|| errno
== EAGAIN
)
2046 if (http
->timeout_cb
&& !(*http
->timeout_cb
)(http
, http
->timeout_data
))
2048 else if (!http
->timeout_cb
&& errno
!= EAGAIN
)
2051 else if (errno
!= EINTR
)
2056 DEBUG_printf(("2httpRead2: read " CUPS_LLFMT
" bytes from socket...",
2057 CUPS_LLCAST bytes
));
2062 http
->data_remaining
-= bytes
;
2064 if (http
->data_remaining
<= INT_MAX
)
2065 http
->_data_remaining
= (int)http
->data_remaining
;
2067 http
->_data_remaining
= INT_MAX
;
2072 if (WSAGetLastError() == WSAEINTR
)
2075 http
->error
= WSAGetLastError();
2077 if (errno
== EINTR
|| (errno
== EAGAIN
&& !http
->timeout_cb
))
2080 http
->error
= errno
;
2085 http
->error
= EPIPE
;
2089 if (http
->data_remaining
== 0)
2091 if (http
->data_encoding
== HTTP_ENCODE_CHUNKED
)
2092 httpGets(len
, sizeof(len
), http
);
2094 if (http
->data_encoding
!= HTTP_ENCODE_CHUNKED
)
2096 if (http
->state
== HTTP_POST_RECV
)
2099 http
->state
= HTTP_WAITING
;
2104 http_debug_hex("httpRead2", buffer
, (int)bytes
);
2111 #if defined(HAVE_SSL) && defined(HAVE_CDSASSL)
2113 * '_httpReadCDSA()' - Read function for the CDSA library.
2116 OSStatus
/* O - -1 on error, 0 on success */
2118 SSLConnectionRef connection
, /* I - SSL/TLS connection */
2119 void *data
, /* I - Data buffer */
2120 size_t *dataLength
) /* IO - Number of bytes */
2122 OSStatus result
; /* Return value */
2123 ssize_t bytes
; /* Number of bytes read */
2124 http_t
*http
; /* HTTP connection */
2127 http
= (http_t
*)connection
;
2129 if (!http
->blocking
)
2132 * Make sure we have data before we read...
2135 while (!_httpWait(http
, 10000, 0))
2137 if (http
->timeout_cb
&& (*http
->timeout_cb
)(http
, http
->timeout_data
))
2140 http
->error
= ETIMEDOUT
;
2147 bytes
= recv(http
->fd
, data
, *dataLength
, 0);
2149 while (bytes
== -1 && (errno
== EINTR
|| errno
== EAGAIN
));
2151 if (bytes
== *dataLength
)
2157 *dataLength
= bytes
;
2158 result
= errSSLWouldBlock
;
2165 result
= errSSLClosedGraceful
;
2166 else if (errno
== EAGAIN
)
2167 result
= errSSLWouldBlock
;
2169 result
= errSSLClosedAbort
;
2174 #endif /* HAVE_SSL && HAVE_CDSASSL */
2177 #if defined(HAVE_SSL) && defined(HAVE_GNUTLS)
2179 * '_httpReadGNUTLS()' - Read function for the GNU TLS library.
2182 ssize_t
/* O - Number of bytes read or -1 on error */
2184 gnutls_transport_ptr ptr
, /* I - Connection to server */
2185 void *data
, /* I - Buffer */
2186 size_t length
) /* I - Number of bytes to read */
2188 http_t
*http
; /* HTTP connection */
2189 ssize_t bytes
; /* Bytes read */
2192 DEBUG_printf(("6_httpReadGNUTLS(ptr=%p, data=%p, length=%d)", ptr
, data
, (int)length
));
2194 http
= (http_t
*)ptr
;
2196 if (!http
->blocking
)
2199 * Make sure we have data before we read...
2202 while (!_httpWait(http
, 10000, 0))
2204 if (http
->timeout_cb
&& (*http
->timeout_cb
)(http
, http
->timeout_data
))
2207 http
->error
= ETIMEDOUT
;
2212 bytes
= recv(http
->fd
, data
, length
, 0);
2213 DEBUG_printf(("6_httpReadGNUTLS: bytes=%d", (int)bytes
));
2216 #endif /* HAVE_SSL && HAVE_GNUTLS */
2220 * 'httpReconnect()' - Reconnect to a HTTP server.
2223 int /* O - 0 on success, non-zero on failure */
2224 httpReconnect(http_t
*http
) /* I - Connection to server */
2226 http_addrlist_t
*addr
; /* Connected address */
2228 http_addrlist_t
*current
; /* Current address */
2229 char temp
[256]; /* Temporary address string */
2233 DEBUG_printf(("httpReconnect(http=%p)", http
));
2241 DEBUG_puts("2httpReconnect: Shutting down SSL/TLS...");
2242 http_shutdown_ssl(http
);
2244 #endif /* HAVE_SSL */
2247 * Close any previously open socket...
2252 DEBUG_printf(("2httpReconnect: Closing socket %d...", http
->fd
));
2255 closesocket(http
->fd
);
2264 * Connect to the server...
2268 for (current
= http
->addrlist
; current
; current
= current
->next
)
2269 DEBUG_printf(("2httpReconnect: Address %s:%d",
2270 httpAddrString(&(current
->addr
), temp
, sizeof(temp
)),
2271 _httpAddrPort(&(current
->addr
))));
2274 if ((addr
= httpAddrConnect(http
->addrlist
, &(http
->fd
))) == NULL
)
2277 * Unable to connect...
2281 http
->error
= WSAGetLastError();
2283 http
->error
= errno
;
2285 http
->status
= HTTP_ERROR
;
2287 DEBUG_printf(("1httpReconnect: httpAddrConnect failed: %s",
2288 strerror(http
->error
)));
2293 DEBUG_printf(("2httpReconnect: New socket=%d", http
->fd
));
2295 if (http
->timeout_value
.tv_sec
> 0)
2298 DWORD timeout_value
= http
->timeout_value
.tv_sec
* 1000 +
2299 http
->timeout_value
.tv_usec
/ 1000;
2300 /* Timeout in milliseconds */
2302 setsockopt(http
->fd
, SOL_SOCKET
, SO_RCVTIMEO
, (char *)&timeout_value
,
2303 sizeof(timeout_value
));
2304 setsockopt(http
->fd
, SOL_SOCKET
, SO_SNDTIMEO
, (char *)&timeout_value
,
2305 sizeof(timeout_value
));
2307 setsockopt(http
->fd
, SOL_SOCKET
, SO_RCVTIMEO
, &(http
->timeout_value
),
2308 sizeof(http
->timeout_value
));
2309 setsockopt(http
->fd
, SOL_SOCKET
, SO_SNDTIMEO
, &(http
->timeout_value
),
2310 sizeof(http
->timeout_value
));
2314 http
->hostaddr
= &(addr
->addr
);
2316 http
->status
= HTTP_CONTINUE
;
2319 if (http
->encryption
== HTTP_ENCRYPT_ALWAYS
)
2322 * Always do encryption via SSL.
2325 if (http_setup_ssl(http
) != 0)
2328 closesocket(http
->fd
);
2336 else if (http
->encryption
== HTTP_ENCRYPT_REQUIRED
)
2337 return (http_upgrade(http
));
2338 #endif /* HAVE_SSL */
2340 DEBUG_printf(("1httpReconnect: Connected to %s:%d...",
2341 httpAddrString(http
->hostaddr
, temp
, sizeof(temp
)),
2342 _httpAddrPort(http
->hostaddr
)));
2349 * 'httpSetAuthString()' - Set the current authorization string.
2351 * This function just stores a copy of the current authorization string in
2352 * the HTTP connection object. You must still call httpSetField() to set
2353 * HTTP_FIELD_AUTHORIZATION prior to issuing a HTTP request using httpGet(),
2354 * httpHead(), httpOptions(), httpPost, or httpPut().
2356 * @since CUPS 1.3/Mac OS X 10.5@
2360 httpSetAuthString(http_t
*http
, /* I - Connection to server */
2361 const char *scheme
, /* I - Auth scheme (NULL to clear it) */
2362 const char *data
) /* I - Auth data (NULL for none) */
2365 * Range check input...
2371 if (http
->authstring
&& http
->authstring
!= http
->_authstring
)
2372 free(http
->authstring
);
2374 http
->authstring
= http
->_authstring
;
2379 * Set the current authorization string...
2382 int len
= (int)strlen(scheme
) + (data
? (int)strlen(data
) + 1 : 0) + 1;
2385 if (len
> (int)sizeof(http
->_authstring
))
2387 if ((temp
= malloc(len
)) == NULL
)
2388 len
= sizeof(http
->_authstring
);
2390 http
->authstring
= temp
;
2394 snprintf(http
->authstring
, len
, "%s %s", scheme
, data
);
2396 strlcpy(http
->authstring
, scheme
, len
);
2401 * Clear the current authorization string...
2404 http
->_authstring
[0] = '\0';
2410 * 'httpSetCredentials()' - Set the credentials associated with an encrypted
2413 * @since CUPS 1.5/Mac OS X 10.7@
2416 int /* O - Status of call (0 = success) */
2417 httpSetCredentials(http_t
*http
, /* I - Connection to server */
2418 cups_array_t
*credentials
) /* I - Array of credentials */
2420 if (!http
|| cupsArrayCount(credentials
) < 1)
2423 _httpFreeCredentials(http
->tls_credentials
);
2425 http
->tls_credentials
= _httpConvertCredentials(credentials
);
2427 return (http
->tls_credentials
? 0 : -1);
2432 * 'httpSetCookie()' - Set the cookie value(s).
2434 * @since CUPS 1.1.19/Mac OS X 10.3@
2438 httpSetCookie(http_t
*http
, /* I - Connection */
2439 const char *cookie
) /* I - Cookie string */
2448 http
->cookie
= strdup(cookie
);
2450 http
->cookie
= NULL
;
2455 * 'httpSetExpect()' - Set the Expect: header in a request.
2457 * Currently only HTTP_CONTINUE is supported for the "expect" argument.
2459 * @since CUPS 1.2/Mac OS X 10.5@
2463 httpSetExpect(http_t
*http
, /* I - Connection to server */
2464 http_status_t expect
) /* I - HTTP status to expect (HTTP_CONTINUE) */
2467 http
->expect
= expect
;
2472 * 'httpSetField()' - Set the value of an HTTP header.
2476 httpSetField(http_t
*http
, /* I - Connection to server */
2477 http_field_t field
, /* I - Field index */
2478 const char *value
) /* I - Value */
2481 field
< HTTP_FIELD_ACCEPT_LANGUAGE
||
2482 field
> HTTP_FIELD_WWW_AUTHENTICATE
||
2486 strlcpy(http
->fields
[field
], value
, HTTP_MAX_VALUE
);
2488 if (field
== HTTP_FIELD_AUTHORIZATION
)
2491 * Special case for Authorization: as its contents can be
2492 * longer than HTTP_MAX_VALUE
2495 if (http
->field_authorization
)
2496 free(http
->field_authorization
);
2498 http
->field_authorization
= strdup(value
);
2500 else if (field
== HTTP_FIELD_HOST
)
2503 * Special-case for Host: as we don't want a trailing "." on the hostname and
2504 * need to bracket IPv6 numeric addresses.
2507 char *ptr
= strchr(value
, ':');
2509 if (value
[0] != '[' && ptr
&& strchr(ptr
+ 1, ':'))
2512 * Bracket IPv6 numeric addresses...
2514 * This is slightly inefficient (basically copying twice), but is an edge
2515 * case and not worth optimizing...
2518 snprintf(http
->fields
[HTTP_FIELD_HOST
],
2519 sizeof(http
->fields
[HTTP_FIELD_HOST
]), "[%s]", value
);
2524 * Check for a trailing dot on the hostname...
2527 ptr
= http
->fields
[HTTP_FIELD_HOST
];
2531 ptr
+= strlen(ptr
) - 1;
2542 * 'httpSetLength()' - Set the content-length and content-encoding.
2544 * @since CUPS 1.2/Mac OS X 10.5@
2548 httpSetLength(http_t
*http
, /* I - Connection to server */
2549 size_t length
) /* I - Length (0 for chunked) */
2556 strcpy(http
->fields
[HTTP_FIELD_TRANSFER_ENCODING
], "chunked");
2557 http
->fields
[HTTP_FIELD_CONTENT_LENGTH
][0] = '\0';
2561 http
->fields
[HTTP_FIELD_TRANSFER_ENCODING
][0] = '\0';
2562 snprintf(http
->fields
[HTTP_FIELD_CONTENT_LENGTH
], HTTP_MAX_VALUE
,
2563 CUPS_LLFMT
, CUPS_LLCAST length
);
2569 * 'httpSetTimeout()' - Set read/write timeouts and an optional callback.
2571 * The optional timeout callback receives both the HTTP connection and a user
2572 * data pointer and must return 1 to continue or 0 to error (time) out.
2574 * @since CUPS 1.5/Mac OS X 10.7@
2579 http_t
*http
, /* I - Connection to server */
2580 double timeout
, /* I - Number of seconds for timeout,
2581 must be greater than 0 */
2582 http_timeout_cb_t cb
, /* I - Callback function or NULL */
2583 void *user_data
) /* I - User data pointer */
2585 if (!http
|| timeout
<= 0.0)
2588 http
->timeout_cb
= cb
;
2589 http
->timeout_data
= user_data
;
2590 http
->timeout_value
.tv_sec
= (int)timeout
;
2591 http
->timeout_value
.tv_usec
= (int)(timeout
* 1000000) % 1000000;
2596 DWORD timeout_value
= http
->timeout_value
.tv_sec
* 1000 +
2597 http
->timeout_value
.tv_usec
/ 1000;
2598 /* Timeout in milliseconds */
2600 setsockopt(http
->fd
, SOL_SOCKET
, SO_RCVTIMEO
, (char *)&timeout_value
,
2601 sizeof(timeout_value
));
2602 setsockopt(http
->fd
, SOL_SOCKET
, SO_SNDTIMEO
, (char *)&timeout_value
,
2603 sizeof(timeout_value
));
2606 setsockopt(http
->fd
, SOL_SOCKET
, SO_RCVTIMEO
, &(http
->timeout_value
),
2607 sizeof(http
->timeout_value
));
2608 setsockopt(http
->fd
, SOL_SOCKET
, SO_SNDTIMEO
, &(http
->timeout_value
),
2609 sizeof(http
->timeout_value
));
2616 * 'httpTrace()' - Send an TRACE request to the server.
2619 int /* O - Status of call (0 = success) */
2620 httpTrace(http_t
*http
, /* I - Connection to server */
2621 const char *uri
) /* I - URI for trace */
2623 return (http_send(http
, HTTP_TRACE
, uri
));
2628 * '_httpUpdate()' - Update the current HTTP status for incoming data.
2630 * Note: Unlike httpUpdate(), this function does not flush pending write data
2631 * and only retrieves a single status line from the HTTP connection.
2634 int /* O - 1 to continue, 0 to stop */
2635 _httpUpdate(http_t
*http
, /* I - Connection to server */
2636 http_status_t
*status
) /* O - Current HTTP status */
2638 char line
[32768], /* Line from connection... */
2639 *value
; /* Pointer to value on line */
2640 http_field_t field
; /* Field index */
2641 int major
, minor
; /* HTTP version numbers */
2644 DEBUG_printf(("_httpUpdate(http=%p, status=%p), state=%s", http
, status
,
2645 http_states
[http
->state
]));
2648 * Grab a single line from the connection...
2651 if (!httpGets(line
, sizeof(line
), http
))
2653 *status
= HTTP_ERROR
;
2657 DEBUG_printf(("2_httpUpdate: Got \"%s\"", line
));
2659 if (line
[0] == '\0')
2662 * Blank line means the start of the data section (if any). Return
2663 * the result code, too...
2665 * If we get status 100 (HTTP_CONTINUE), then we *don't* change states.
2666 * Instead, we just return HTTP_CONTINUE to the caller and keep on
2670 if (http
->status
== HTTP_CONTINUE
)
2672 *status
= http
->status
;
2676 if (http
->status
< HTTP_BAD_REQUEST
)
2677 http
->digest_tries
= 0;
2680 if (http
->status
== HTTP_SWITCHING_PROTOCOLS
&& !http
->tls
)
2682 if (http_setup_ssl(http
) != 0)
2685 closesocket(http
->fd
);
2690 *status
= http
->status
= HTTP_ERROR
;
2694 *status
= HTTP_CONTINUE
;
2697 #endif /* HAVE_SSL */
2699 httpGetLength2(http
);
2701 switch (http
->state
)
2705 case HTTP_POST_RECV
:
2708 case HTTP_POST_SEND
:
2713 http
->state
= HTTP_WAITING
;
2717 *status
= http
->status
;
2720 else if (!strncmp(line
, "HTTP/", 5))
2723 * Got the beginning of a response...
2726 int intstatus
; /* Status value as an integer */
2728 if (sscanf(line
, "HTTP/%d.%d%d", &major
, &minor
, &intstatus
) != 3)
2730 *status
= http
->status
= HTTP_ERROR
;
2734 http
->version
= (http_version_t
)(major
* 100 + minor
);
2735 *status
= http
->status
= (http_status_t
)intstatus
;
2737 else if ((value
= strchr(line
, ':')) != NULL
)
2744 while (_cups_isspace(*value
))
2748 * Be tolerants of servers that send unknown attribute fields...
2751 if (!_cups_strcasecmp(line
, "expect"))
2754 * "Expect: 100-continue" or similar...
2757 http
->expect
= (http_status_t
)atoi(value
);
2759 else if (!_cups_strcasecmp(line
, "cookie"))
2762 * "Cookie: name=value[; name=value ...]" - replaces previous cookies...
2765 httpSetCookie(http
, value
);
2767 else if ((field
= http_field(line
)) != HTTP_FIELD_UNKNOWN
)
2768 httpSetField(http
, field
, value
);
2771 DEBUG_printf(("1_httpUpdate: unknown field %s seen!", line
));
2776 DEBUG_printf(("1_httpUpdate: Bad response line \"%s\"!", line
));
2777 *status
= http
->status
= HTTP_ERROR
;
2786 * 'httpUpdate()' - Update the current HTTP state for incoming data.
2789 http_status_t
/* O - HTTP status */
2790 httpUpdate(http_t
*http
) /* I - Connection to server */
2792 http_status_t status
; /* Request status */
2795 DEBUG_printf(("httpUpdate(http=%p), state=%s", http
,
2796 http_states
[http
->state
]));
2799 * Flush pending data, if any...
2804 DEBUG_puts("2httpUpdate: flushing buffer...");
2806 if (httpFlushWrite(http
) < 0)
2807 return (HTTP_ERROR
);
2811 * If we haven't issued any commands, then there is nothing to "update"...
2814 if (http
->state
== HTTP_WAITING
)
2815 return (HTTP_CONTINUE
);
2818 * Grab all of the lines we can from the connection...
2821 while (_httpUpdate(http
, &status
));
2824 * See if there was an error...
2827 if (http
->error
== EPIPE
&& http
->status
> HTTP_CONTINUE
)
2829 DEBUG_printf(("1httpUpdate: Returning status %d...", http
->status
));
2830 return (http
->status
);
2835 DEBUG_printf(("1httpUpdate: socket error %d - %s", http
->error
,
2836 strerror(http
->error
)));
2837 http
->status
= HTTP_ERROR
;
2838 return (HTTP_ERROR
);
2842 * Return the current status...
2850 * '_httpWait()' - Wait for data available on a connection (no flush).
2853 int /* O - 1 if data is available, 0 otherwise */
2854 _httpWait(http_t
*http
, /* I - Connection to server */
2855 int msec
, /* I - Milliseconds to wait */
2856 int usessl
) /* I - Use SSL context? */
2859 struct pollfd pfd
; /* Polled file descriptor */
2861 fd_set input_set
; /* select() input set */
2862 struct timeval timeout
; /* Timeout */
2863 #endif /* HAVE_POLL */
2864 int nfds
; /* Result from select()/poll() */
2867 DEBUG_printf(("4_httpWait(http=%p, msec=%d, usessl=%d)", http
, msec
, usessl
));
2871 DEBUG_printf(("5_httpWait: Returning 0 since fd=%d", http
->fd
));
2876 * Check the SSL/TLS buffers for data first...
2880 if (http
->tls
&& usessl
)
2883 if (SSL_pending(http
->tls
))
2885 DEBUG_puts("5_httpWait: Return 1 since there is pending SSL data.");
2889 # elif defined(HAVE_GNUTLS)
2890 if (gnutls_record_check_pending(http
->tls
))
2892 DEBUG_puts("5_httpWait: Return 1 since there is pending SSL data.");
2896 # elif defined(HAVE_CDSASSL)
2897 size_t bytes
; /* Bytes that are available */
2899 if (!SSLGetBufferedReadSize(http
->tls
, &bytes
) &&
2902 DEBUG_puts("5_httpWait: Return 1 since there is pending SSL data.");
2905 # endif /* HAVE_LIBSSL */
2907 #endif /* HAVE_SSL */
2910 * Then try doing a select() or poll() to poll the socket...
2915 pfd
.events
= POLLIN
;
2917 while ((nfds
= poll(&pfd
, 1, msec
)) < 0 &&
2918 (errno
== EINTR
|| errno
== EAGAIN
));
2923 FD_ZERO(&input_set
);
2924 FD_SET(http
->fd
, &input_set
);
2926 DEBUG_printf(("6_httpWait: msec=%d, http->fd=%d", msec
, http
->fd
));
2930 timeout
.tv_sec
= msec
/ 1000;
2931 timeout
.tv_usec
= (msec
% 1000) * 1000;
2933 nfds
= select(http
->fd
+ 1, &input_set
, NULL
, NULL
, &timeout
);
2936 nfds
= select(http
->fd
+ 1, &input_set
, NULL
, NULL
, NULL
);
2938 DEBUG_printf(("6_httpWait: select() returned %d...", nfds
));
2941 while (nfds
< 0 && (WSAGetLastError() == WSAEINTR
||
2942 WSAGetLastError() == WSAEWOULDBLOCK
));
2944 while (nfds
< 0 && (errno
== EINTR
|| errno
== EAGAIN
));
2946 #endif /* HAVE_POLL */
2948 DEBUG_printf(("5_httpWait: returning with nfds=%d, errno=%d...", nfds
,
2956 * 'httpWait()' - Wait for data available on a connection.
2958 * @since CUPS 1.1.19/Mac OS X 10.3@
2961 int /* O - 1 if data is available, 0 otherwise */
2962 httpWait(http_t
*http
, /* I - Connection to server */
2963 int msec
) /* I - Milliseconds to wait */
2966 * First see if there is data in the buffer...
2969 DEBUG_printf(("2httpWait(http=%p, msec=%d)", http
, msec
));
2976 DEBUG_puts("3httpWait: Returning 1 since there is buffered data ready.");
2981 * Flush pending data, if any...
2986 DEBUG_puts("3httpWait: Flushing write buffer.");
2988 if (httpFlushWrite(http
) < 0)
2993 * If not, check the SSL/TLS buffers and do a select() on the connection...
2996 return (_httpWait(http
, msec
, 1));
3001 * 'httpWrite()' - Write data to a HTTP connection.
3003 * This function is deprecated. Use the httpWrite2() function which can
3004 * write more than 2GB of data.
3009 int /* O - Number of bytes written */
3010 httpWrite(http_t
*http
, /* I - Connection to server */
3011 const char *buffer
, /* I - Buffer for data */
3012 int length
) /* I - Number of bytes to write */
3014 return ((int)httpWrite2(http
, buffer
, length
));
3019 * 'httpWrite2()' - Write data to a HTTP connection.
3021 * @since CUPS 1.2/Mac OS X 10.5@
3024 ssize_t
/* O - Number of bytes written */
3025 httpWrite2(http_t
*http
, /* I - Connection to server */
3026 const char *buffer
, /* I - Buffer for data */
3027 size_t length
) /* I - Number of bytes to write */
3029 ssize_t bytes
; /* Bytes written */
3032 DEBUG_printf(("httpWrite2(http=%p, buffer=%p, length=" CUPS_LLFMT
")", http
,
3033 buffer
, CUPS_LLCAST length
));
3036 * Range check input...
3039 if (http
== NULL
|| buffer
== NULL
)
3043 * Mark activity on the connection...
3046 http
->activity
= time(NULL
);
3049 * Buffer small writes for better performance...
3054 if (http
->wused
&& (length
+ http
->wused
) > sizeof(http
->wbuffer
))
3056 DEBUG_printf(("2httpWrite2: Flushing buffer (wused=%d, length="
3057 CUPS_LLFMT
")", http
->wused
, CUPS_LLCAST length
));
3059 httpFlushWrite(http
);
3062 if ((length
+ http
->wused
) <= sizeof(http
->wbuffer
) &&
3063 length
< sizeof(http
->wbuffer
))
3066 * Write to buffer...
3069 DEBUG_printf(("2httpWrite2: Copying " CUPS_LLFMT
" bytes to wbuffer...",
3070 CUPS_LLCAST length
));
3072 memcpy(http
->wbuffer
+ http
->wused
, buffer
, length
);
3073 http
->wused
+= (int)length
;
3074 bytes
= (ssize_t
)length
;
3079 * Otherwise write the data directly...
3082 DEBUG_printf(("2httpWrite2: Writing " CUPS_LLFMT
" bytes to socket...",
3083 CUPS_LLCAST length
));
3085 if (http
->data_encoding
== HTTP_ENCODE_CHUNKED
)
3086 bytes
= (ssize_t
)http_write_chunk(http
, buffer
, (int)length
);
3088 bytes
= (ssize_t
)http_write(http
, buffer
, (int)length
);
3090 DEBUG_printf(("2httpWrite2: Wrote " CUPS_LLFMT
" bytes...",
3091 CUPS_LLCAST bytes
));
3094 if (http
->data_encoding
== HTTP_ENCODE_LENGTH
)
3095 http
->data_remaining
-= bytes
;
3101 * Handle end-of-request processing...
3104 if ((http
->data_encoding
== HTTP_ENCODE_CHUNKED
&& length
== 0) ||
3105 (http
->data_encoding
== HTTP_ENCODE_LENGTH
&& http
->data_remaining
== 0))
3108 * Finished with the transfer; unless we are sending POST or PUT
3112 DEBUG_puts("2httpWrite: changing states...");
3115 httpFlushWrite(http
);
3117 if (http
->data_encoding
== HTTP_ENCODE_CHUNKED
)
3120 * Send a 0-length chunk at the end of the request...
3123 http_write(http
, "0\r\n\r\n", 5);
3126 * Reset the data state...
3129 http
->data_encoding
= HTTP_ENCODE_LENGTH
;
3130 http
->data_remaining
= 0;
3138 #if defined(HAVE_SSL) && defined(HAVE_CDSASSL)
3140 * '_httpWriteCDSA()' - Write function for the CDSA library.
3143 OSStatus
/* O - -1 on error, 0 on success */
3145 SSLConnectionRef connection
, /* I - SSL/TLS connection */
3146 const void *data
, /* I - Data buffer */
3147 size_t *dataLength
) /* IO - Number of bytes */
3149 OSStatus result
; /* Return value */
3150 ssize_t bytes
; /* Number of bytes read */
3151 http_t
*http
; /* HTTP connection */
3154 http
= (http_t
*)connection
;
3158 bytes
= write(http
->fd
, data
, *dataLength
);
3160 while (bytes
== -1 && (errno
== EINTR
|| errno
== EAGAIN
));
3162 if (bytes
== *dataLength
)
3166 else if (bytes
>= 0)
3168 *dataLength
= bytes
;
3169 result
= errSSLWouldBlock
;
3175 if (errno
== EAGAIN
)
3176 result
= errSSLWouldBlock
;
3178 result
= errSSLClosedAbort
;
3183 #endif /* HAVE_SSL && HAVE_CDSASSL */
3186 #if defined(HAVE_SSL) && defined(HAVE_GNUTLS)
3188 * '_httpWriteGNUTLS()' - Write function for the GNU TLS library.
3191 ssize_t
/* O - Number of bytes written or -1 on error */
3193 gnutls_transport_ptr ptr
, /* I - Connection to server */
3194 const void *data
, /* I - Data buffer */
3195 size_t length
) /* I - Number of bytes to write */
3197 ssize_t bytes
; /* Bytes written */
3200 DEBUG_printf(("6_httpWriteGNUTLS(ptr=%p, data=%p, length=%d)", ptr
, data
,
3202 http_debug_hex("_httpWriteGNUTLS", data
, (int)length
);
3204 bytes
= send(((http_t
*)ptr
)->fd
, data
, length
, 0);
3205 DEBUG_printf(("_httpWriteGNUTLS: bytes=%d", (int)bytes
));
3208 #endif /* HAVE_SSL && HAVE_GNUTLS */
3211 #if defined(HAVE_SSL) && defined(HAVE_LIBSSL)
3213 * 'http_bio_ctrl()' - Control the HTTP connection.
3216 static long /* O - Result/data */
3217 http_bio_ctrl(BIO
*h
, /* I - BIO data */
3218 int cmd
, /* I - Control command */
3219 long arg1
, /* I - First argument */
3220 void *arg2
) /* I - Second argument */
3227 case BIO_CTRL_RESET
:
3231 case BIO_C_SET_FILE_PTR
:
3236 case BIO_C_GET_FILE_PTR
:
3239 *((void **)arg2
) = h
->ptr
;
3246 case BIO_CTRL_FLUSH
:
3253 * 'http_bio_free()' - Free OpenSSL data.
3256 static int /* O - 1 on success, 0 on failure */
3257 http_bio_free(BIO
*h
) /* I - BIO data */
3273 * 'http_bio_new()' - Initialize an OpenSSL BIO structure.
3276 static int /* O - 1 on success, 0 on failure */
3277 http_bio_new(BIO
*h
) /* I - BIO data */
3292 * 'http_bio_puts()' - Send a string for OpenSSL.
3295 static int /* O - Bytes written */
3296 http_bio_puts(BIO
*h
, /* I - BIO data */
3297 const char *str
) /* I - String to write */
3300 return (send(((http_t
*)h
->ptr
)->fd
, str
, (int)strlen(str
), 0));
3302 return (send(((http_t
*)h
->ptr
)->fd
, str
, strlen(str
), 0));
3308 * 'http_bio_read()' - Read data for OpenSSL.
3311 static int /* O - Bytes read */
3312 http_bio_read(BIO
*h
, /* I - BIO data */
3313 char *buf
, /* I - Buffer */
3314 int size
) /* I - Number of bytes to read */
3316 http_t
*http
; /* HTTP connection */
3319 http
= (http_t
*)h
->ptr
;
3321 if (!http
->blocking
)
3324 * Make sure we have data before we read...
3327 while (!_httpWait(http
, 10000, 0))
3329 if (http
->timeout_cb
&& (*http
->timeout_cb
)(http
, http
->timeout_data
))
3333 http
->error
= WSAETIMEDOUT
;
3335 http
->error
= ETIMEDOUT
;
3342 return (recv(http
->fd
, buf
, size
, 0));
3347 * 'http_bio_write()' - Write data for OpenSSL.
3350 static int /* O - Bytes written */
3351 http_bio_write(BIO
*h
, /* I - BIO data */
3352 const char *buf
, /* I - Buffer to write */
3353 int num
) /* I - Number of bytes to write */
3355 return (send(((http_t
*)h
->ptr
)->fd
, buf
, num
, 0));
3357 #endif /* HAVE_SSL && HAVE_LIBSSL */
3362 * 'http_debug_hex()' - Do a hex dump of a buffer.
3366 http_debug_hex(const char *prefix
, /* I - Prefix for line */
3367 const char *buffer
, /* I - Buffer to dump */
3368 int bytes
) /* I - Bytes to dump */
3370 int i
, j
, /* Looping vars */
3371 ch
; /* Current character */
3372 char line
[255], /* Line buffer */
3373 *start
, /* Start of line after prefix */
3374 *ptr
; /* Pointer into line */
3377 if (_cups_debug_fd
< 0 || _cups_debug_level
< 6)
3380 DEBUG_printf(("6%s: %d bytes:\n", prefix
, bytes
));
3382 snprintf(line
, sizeof(line
), "6%s: ", prefix
);
3383 start
= line
+ strlen(line
);
3385 for (i
= 0; i
< bytes
; i
+= 16)
3387 for (j
= 0, ptr
= start
; j
< 16 && (i
+ j
) < bytes
; j
++, ptr
+= 2)
3388 sprintf(ptr
, "%02X", buffer
[i
+ j
] & 255);
3400 for (j
= 0; j
< 16 && (i
+ j
) < bytes
; j
++)
3402 ch
= buffer
[i
+ j
] & 255;
3404 if (ch
< ' ' || ch
>= 127)
3418 * 'http_field()' - Return the field index for a field name.
3421 static http_field_t
/* O - Field index */
3422 http_field(const char *name
) /* I - String name */
3424 int i
; /* Looping var */
3427 for (i
= 0; i
< HTTP_FIELD_MAX
; i
++)
3428 if (_cups_strcasecmp(name
, http_fields
[i
]) == 0)
3429 return ((http_field_t
)i
);
3431 return (HTTP_FIELD_UNKNOWN
);
3437 * 'http_read_ssl()' - Read from a SSL/TLS connection.
3440 static int /* O - Bytes read */
3441 http_read_ssl(http_t
*http
, /* I - Connection to server */
3442 char *buf
, /* I - Buffer to store data */
3443 int len
) /* I - Length of buffer */
3445 # if defined(HAVE_LIBSSL)
3446 return (SSL_read((SSL
*)(http
->tls
), buf
, len
));
3448 # elif defined(HAVE_GNUTLS)
3449 ssize_t result
; /* Return value */
3452 result
= gnutls_record_recv(http
->tls
, buf
, len
);
3454 if (result
< 0 && !errno
)
3457 * Convert GNU TLS error to errno value...
3462 case GNUTLS_E_INTERRUPTED
:
3466 case GNUTLS_E_AGAIN
:
3478 return ((int)result
);
3480 # elif defined(HAVE_CDSASSL)
3481 int result
; /* Return value */
3482 OSStatus error
; /* Error info */
3483 size_t processed
; /* Number of bytes processed */
3486 error
= SSLRead(http
->tls
, buf
, len
, &processed
);
3491 result
= (int)processed
;
3494 case errSSLWouldBlock
:
3496 result
= (int)processed
;
3504 case errSSLClosedGraceful
:
3507 result
= (int)processed
;
3517 # elif defined(HAVE_SSPISSL)
3518 return _sspiRead((_sspi_struct_t
*) http
->tls
, buf
, len
);
3519 # endif /* HAVE_LIBSSL */
3521 #endif /* HAVE_SSL */
3525 * 'http_send()' - Send a request with all fields and the trailing blank line.
3528 static int /* O - 0 on success, non-zero on error */
3529 http_send(http_t
*http
, /* I - Connection to server */
3530 http_state_t request
, /* I - Request code */
3531 const char *uri
) /* I - URI */
3533 int i
; /* Looping var */
3534 char buf
[1024]; /* Encoded URI buffer */
3535 static const char * const codes
[] =
3536 { /* Request code strings */
3553 DEBUG_printf(("7http_send(http=%p, request=HTTP_%s, uri=\"%s\")",
3554 http
, codes
[request
], uri
));
3556 if (http
== NULL
|| uri
== NULL
)
3560 * Set the User-Agent field if it isn't already...
3563 if (!http
->fields
[HTTP_FIELD_USER_AGENT
][0])
3564 httpSetField(http
, HTTP_FIELD_USER_AGENT
, CUPS_MINIMAL
);
3567 * Encode the URI as needed...
3570 _httpEncodeURI(buf
, uri
, sizeof(buf
));
3573 * See if we had an error the last time around; if so, reconnect...
3576 if (http
->status
== HTTP_ERROR
|| http
->status
>= HTTP_BAD_REQUEST
)
3577 if (httpReconnect(http
))
3581 * Flush any written data that is pending...
3586 if (httpFlushWrite(http
) < 0)
3587 if (httpReconnect(http
))
3592 * Send the request header...
3595 http
->state
= request
;
3596 http
->data_encoding
= HTTP_ENCODE_FIELDS
;
3598 if (request
== HTTP_POST
|| request
== HTTP_PUT
)
3601 http
->status
= HTTP_CONTINUE
;
3604 if (http
->encryption
== HTTP_ENCRYPT_REQUIRED
&& !http
->tls
)
3606 httpSetField(http
, HTTP_FIELD_CONNECTION
, "Upgrade");
3607 httpSetField(http
, HTTP_FIELD_UPGRADE
, "TLS/1.0,SSL/2.0,SSL/3.0");
3609 #endif /* HAVE_SSL */
3611 if (httpPrintf(http
, "%s %s HTTP/1.1\r\n", codes
[request
], buf
) < 1)
3613 http
->status
= HTTP_ERROR
;
3617 for (i
= 0; i
< HTTP_FIELD_MAX
; i
++)
3618 if (http
->fields
[i
][0] != '\0')
3620 DEBUG_printf(("9http_send: %s: %s", http_fields
[i
],
3621 httpGetField(http
, i
)));
3623 if (httpPrintf(http
, "%s: %s\r\n", http_fields
[i
],
3624 httpGetField(http
, i
)) < 1)
3626 http
->status
= HTTP_ERROR
;
3632 if (httpPrintf(http
, "Cookie: $Version=0; %s\r\n", http
->cookie
) < 1)
3634 http
->status
= HTTP_ERROR
;
3638 if (http
->expect
== HTTP_CONTINUE
&&
3639 (http
->state
== HTTP_POST_RECV
|| http
->state
== HTTP_PUT_RECV
))
3640 if (httpPrintf(http
, "Expect: 100-continue\r\n") < 1)
3642 http
->status
= HTTP_ERROR
;
3646 if (httpPrintf(http
, "\r\n") < 1)
3648 http
->status
= HTTP_ERROR
;
3652 if (httpFlushWrite(http
) < 0)
3655 httpGetLength2(http
);
3656 httpClearFields(http
);
3659 * The Kerberos and AuthRef authentication strings can only be used once...
3662 if (http
->field_authorization
&& http
->authstring
&&
3663 (!strncmp(http
->authstring
, "Negotiate", 9) ||
3664 !strncmp(http
->authstring
, "AuthRef", 7)))
3666 http
->_authstring
[0] = '\0';
3668 if (http
->authstring
!= http
->_authstring
)
3669 free(http
->authstring
);
3671 http
->authstring
= http
->_authstring
;
3679 # if defined(HAVE_CDSASSL) && defined(HAVE_SECCERTIFICATECOPYDATA)
3681 * 'http_set_credentials()' - Set the SSL/TLS credentials.
3684 static int /* O - Status of connection */
3685 http_set_credentials(http_t
*http
) /* I - Connection to server */
3687 _cups_globals_t
*cg
= _cupsGlobals(); /* Pointer to library globals */
3688 OSStatus error
= 0; /* Error code */
3689 http_tls_credentials_t credentials
= NULL
;
3690 /* TLS credentials */
3693 DEBUG_printf(("7http_set_credentials(%p)", http
));
3696 * Prefer connection specific credentials...
3699 if ((credentials
= http
->tls_credentials
) == NULL
)
3700 credentials
= cg
->tls_credentials
;
3702 # if HAVE_SECPOLICYCREATESSL
3704 * Otherwise root around in the user's keychain to see if one can be found...
3709 CFDictionaryRef query
; /* Query dictionary */
3710 CFTypeRef matches
= NULL
; /* Matching credentials */
3711 CFArrayRef dn_array
= NULL
;/* Distinguished names array */
3712 CFTypeRef keys
[] = { kSecClass
,
3715 /* Keys for dictionary */
3716 CFTypeRef values
[] = { kSecClassCertificate
,
3719 /* Values for dictionary */
3722 * Get the names associated with the server.
3725 if ((error
= SSLCopyDistinguishedNames(http
->tls
, &dn_array
)) != noErr
)
3727 DEBUG_printf(("4http_set_credentials: SSLCopyDistinguishedNames, error=%d",
3733 * Create a query which will return all identities that can sign and match
3734 * the passed in policy.
3737 query
= CFDictionaryCreate(NULL
,
3738 (const void**)(&keys
[0]),
3739 (const void**)(&values
[0]),
3740 sizeof(keys
) / sizeof(keys
[0]),
3741 &kCFTypeDictionaryKeyCallBacks
,
3742 &kCFTypeDictionaryValueCallBacks
);
3745 error
= SecItemCopyMatching(query
, &matches
);
3746 DEBUG_printf(("4http_set_credentials: SecItemCopyMatching, error=%d",
3755 CFRelease(dn_array
);
3757 # endif /* HAVE_SECPOLICYCREATESSL */
3761 error
= SSLSetCertificate(http
->tls
, credentials
);
3762 DEBUG_printf(("4http_set_credentials: SSLSetCertificate, error=%d",
3766 DEBUG_puts("4http_set_credentials: No credentials to set.");
3770 # endif /* HAVE_CDSASSL && HAVE_SECCERTIFICATECOPYDATA */
3774 * 'http_setup_ssl()' - Set up SSL/TLS support on a connection.
3777 static int /* O - 0 on success, -1 on failure */
3778 http_setup_ssl(http_t
*http
) /* I - Connection to server */
3780 _cups_globals_t
*cg
= _cupsGlobals();
3781 /* Pointer to library globals */
3782 int any_root
; /* Allow any root */
3785 SSL_CTX
*context
; /* Context for encryption */
3786 BIO
*bio
; /* BIO data */
3787 const char *message
= NULL
;/* Error message */
3788 # elif defined(HAVE_GNUTLS)
3789 int status
; /* Status of handshake */
3790 gnutls_certificate_client_credentials
*credentials
;
3791 /* TLS credentials */
3792 # elif defined(HAVE_CDSASSL)
3793 OSStatus error
; /* Error code */
3794 char *hostname
; /* Hostname */
3795 const char *message
= NULL
;/* Error message */
3796 # ifdef HAVE_SECCERTIFICATECOPYDATA
3797 cups_array_t
*credentials
; /* Credentials array */
3798 cups_array_t
*names
; /* CUPS distinguished names */
3799 CFArrayRef dn_array
; /* CF distinguished names array */
3800 CFIndex count
; /* Number of credentials */
3801 CFDataRef data
; /* Certificate data */
3802 int i
; /* Looping var */
3803 http_credential_t
*credential
; /* Credential data */
3804 # endif /* HAVE_SECCERTIFICATECOPYDATA */
3805 # elif defined(HAVE_SSPISSL)
3806 TCHAR username
[256]; /* Username returned from GetUserName() */
3807 TCHAR commonName
[256];/* Common name for certificate */
3808 DWORD dwSize
; /* 32 bit size */
3809 # endif /* HAVE_LIBSSL */
3812 DEBUG_printf(("7http_setup_ssl(http=%p)", http
));
3815 * Always allow self-signed certificates for the local loopback address...
3818 if (httpAddrLocalhost(http
->hostaddr
))
3821 any_root
= cg
->any_root
;
3826 context
= SSL_CTX_new(SSLv23_client_method());
3828 SSL_CTX_set_options(context
, SSL_OP_NO_SSLv2
); /* Only use SSLv3 or TLS */
3830 bio
= BIO_new(_httpBIOMethods());
3831 BIO_ctrl(bio
, BIO_C_SET_FILE_PTR
, 0, (char *)http
);
3833 http
->tls
= SSL_new(context
);
3834 SSL_set_bio(http
->tls
, bio
, bio
);
3836 if (SSL_connect(http
->tls
) != 1)
3838 unsigned long error
; /* Error code */
3840 while ((error
= ERR_get_error()) != 0)
3842 message
= ERR_error_string(error
, NULL
);
3843 DEBUG_printf(("8http_setup_ssl: %s", message
));
3846 SSL_CTX_free(context
);
3847 SSL_free(http
->tls
);
3851 http
->error
= WSAGetLastError();
3853 http
->error
= errno
;
3855 http
->status
= HTTP_ERROR
;
3858 message
= _("Unable to establish a secure connection to host.");
3860 _cupsSetError(IPP_PKI_ERROR
, message
, 1);
3865 # elif defined(HAVE_GNUTLS)
3866 credentials
= (gnutls_certificate_client_credentials
*)
3867 malloc(sizeof(gnutls_certificate_client_credentials
));
3868 if (credentials
== NULL
)
3870 DEBUG_printf(("8http_setup_ssl: Unable to allocate credentials: %s",
3872 http
->error
= errno
;
3873 http
->status
= HTTP_ERROR
;
3874 _cupsSetHTTPError(HTTP_ERROR
);
3879 gnutls_certificate_allocate_credentials(credentials
);
3881 gnutls_init(&http
->tls
, GNUTLS_CLIENT
);
3882 gnutls_set_default_priority(http
->tls
);
3883 gnutls_server_name_set(http
->tls
, GNUTLS_NAME_DNS
, http
->hostname
, strlen(http
->hostname
));
3884 gnutls_credentials_set(http
->tls
, GNUTLS_CRD_CERTIFICATE
, *credentials
);
3885 gnutls_transport_set_ptr(http
->tls
, (gnutls_transport_ptr
)http
);
3886 gnutls_transport_set_pull_function(http
->tls
, _httpReadGNUTLS
);
3887 gnutls_transport_set_push_function(http
->tls
, _httpWriteGNUTLS
);
3889 while ((status
= gnutls_handshake(http
->tls
)) != GNUTLS_E_SUCCESS
)
3891 DEBUG_printf(("8http_setup_ssl: gnutls_handshake returned %d (%s)",
3892 status
, gnutls_strerror(status
)));
3894 if (gnutls_error_is_fatal(status
))
3897 http
->status
= HTTP_ERROR
;
3899 _cupsSetError(IPP_PKI_ERROR
, gnutls_strerror(status
), 0);
3901 gnutls_deinit(http
->tls
);
3902 gnutls_certificate_free_credentials(*credentials
);
3910 http
->tls_credentials
= credentials
;
3912 # elif defined(HAVE_CDSASSL)
3913 if ((error
= SSLNewContext(false, &http
->tls
)))
3915 http
->error
= errno
;
3916 http
->status
= HTTP_ERROR
;
3917 _cupsSetHTTPError(HTTP_ERROR
);
3922 error
= SSLSetConnection(http
->tls
, http
);
3923 DEBUG_printf(("4http_setup_ssl: SSLSetConnection, error=%d", (int)error
));
3927 error
= SSLSetIOFuncs(http
->tls
, _httpReadCDSA
, _httpWriteCDSA
);
3928 DEBUG_printf(("4http_setup_ssl: SSLSetIOFuncs, error=%d", (int)error
));
3933 error
= SSLSetAllowsAnyRoot(http
->tls
, any_root
);
3934 DEBUG_printf(("4http_setup_ssl: SSLSetAllowsAnyRoot(%d), error=%d",
3935 any_root
, (int)error
));
3940 error
= SSLSetAllowsExpiredCerts(http
->tls
, cg
->expired_certs
);
3941 DEBUG_printf(("4http_setup_ssl: SSLSetAllowsExpiredCerts(%d), error=%d",
3942 cg
->expired_certs
, (int)error
));
3947 error
= SSLSetAllowsExpiredRoots(http
->tls
, cg
->expired_root
);
3948 DEBUG_printf(("4http_setup_ssl: SSLSetAllowsExpiredRoots(%d), error=%d",
3949 cg
->expired_root
, (int)error
));
3952 # ifdef HAVE_SSLSETPROTOCOLVERSIONMAX
3955 error
= SSLSetProtocolVersionMax(http
->tls
, kTLSProtocol1
);
3956 DEBUG_printf(("4http_setup_ssl: SSLSetProtocolVersionMax(kTLSProtocol1), "
3957 "error=%d", (int)error
));
3959 # endif /* HAVE_SSLSETPROTOCOLVERSIONMAX */
3961 # ifdef HAVE_SECCERTIFICATECOPYDATA
3964 if (cg
->client_cert_cb
)
3966 error
= SSLSetSessionOption(http
->tls
,
3967 kSSLSessionOptionBreakOnCertRequested
, true);
3968 DEBUG_printf(("4http_setup_ssl: kSSLSessionOptionBreakOnCertRequested, "
3969 "error=%d", (int)error
));
3973 error
= http_set_credentials(http
);
3974 DEBUG_printf(("4http_setup_ssl: http_set_credentials, error=%d",
3980 * If there's a server certificate callback installed let it evaluate the
3981 * certificate(s) during the handshake...
3984 if (!error
&& cg
->server_cert_cb
!= NULL
)
3986 error
= SSLSetEnableCertVerify(http
->tls
, false);
3987 DEBUG_printf(("4http_setup_ssl: SSLSetEnableCertVerify, error=%d",
3992 error
= SSLSetSessionOption(http
->tls
,
3993 kSSLSessionOptionBreakOnServerAuth
, true);
3994 DEBUG_printf(("4http_setup_ssl: kSSLSessionOptionBreakOnServerAuth, "
3995 "error=%d", (int)error
));
3998 # endif /* HAVE_SECCERTIFICATECOPYDATA */
4002 hostname
= httpAddrLocalhost(http
->hostaddr
) ? "localhost" : http
->hostname
;
4003 error
= SSLSetPeerDomainName(http
->tls
, hostname
, strlen(hostname
));
4005 DEBUG_printf(("4http_setup_ssl: SSLSetPeerDomainName, error=%d",
4011 int done
= 0; /* Are we done yet? */
4013 while (!error
&& !done
)
4015 error
= SSLHandshake(http
->tls
);
4017 DEBUG_printf(("4_httpWait: SSLHandshake returned %d.", (int)error
));
4025 case errSSLWouldBlock
:
4029 # ifdef HAVE_SECCERTIFICATECOPYDATA
4030 case errSSLServerAuthCompleted
:
4032 if (cg
->server_cert_cb
)
4034 error
= httpCopyCredentials(http
, &credentials
);
4037 error
= (cg
->server_cert_cb
)(http
, http
->tls
, credentials
,
4038 cg
->server_cert_data
);
4039 httpFreeCredentials(credentials
);
4042 DEBUG_printf(("4_httpWait: Server certificate callback returned "
4043 "%d.", (int)error
));
4047 case errSSLClientCertRequested
:
4050 if (cg
->client_cert_cb
)
4053 if (!(error
= SSLCopyDistinguishedNames(http
->tls
, &dn_array
)) &&
4056 if ((names
= cupsArrayNew(NULL
, NULL
)) != NULL
)
4058 for (i
= 0, count
= CFArrayGetCount(dn_array
); i
< count
; i
++)
4060 data
= (CFDataRef
)CFArrayGetValueAtIndex(dn_array
, i
);
4062 if ((credential
= malloc(sizeof(*credential
))))
4064 credential
->datalen
= CFDataGetLength(data
);
4065 if ((credential
->data
= malloc(credential
->datalen
)))
4067 memcpy((void *)credential
->data
, CFDataGetBytePtr(data
),
4068 credential
->datalen
);
4069 cupsArrayAdd(names
, credential
);
4075 CFRelease(dn_array
);
4080 error
= (cg
->client_cert_cb
)(http
, http
->tls
, names
,
4081 cg
->client_cert_data
);
4083 DEBUG_printf(("4_httpWait: Client certificate callback "
4084 "returned %d.", (int)error
));
4087 httpFreeCredentials(names
);
4090 # endif /* HAVE_SECCERTIFICATECOPYDATA */
4092 case errSSLUnknownRootCert
:
4093 message
= _("Unable to establish a secure connection to host "
4094 "(untrusted certificate).");
4097 case errSSLNoRootCert
:
4098 message
= _("Unable to establish a secure connection to host "
4099 "(self-signed certificate).");
4102 case errSSLCertExpired
:
4103 message
= _("Unable to establish a secure connection to host "
4104 "(expired certificate).");
4107 case errSSLCertNotYetValid
:
4108 message
= _("Unable to establish a secure connection to host "
4109 "(certificate not yet valid).");
4112 case errSSLHostNameMismatch
:
4113 message
= _("Unable to establish a secure connection to host "
4114 "(host name mismatch).");
4117 case errSSLXCertChainInvalid
:
4118 message
= _("Unable to establish a secure connection to host "
4119 "(certificate chain invalid).");
4122 case errSSLConnectionRefused
:
4123 message
= _("Unable to establish a secure connection to host "
4124 "(peer dropped connection before responding).");
4135 http
->error
= error
;
4136 http
->status
= HTTP_ERROR
;
4137 errno
= ECONNREFUSED
;
4139 SSLDisposeContext(http
->tls
);
4143 * If an error string wasn't set by the callbacks use a generic one...
4147 #ifdef HAVE_CSSMERRORSTRING
4148 message
= cssmErrorString(error
);
4150 message
= _("Unable to establish a secure connection to host.");
4151 #endif /* HAVE_CSSMERRORSTRING */
4153 _cupsSetError(IPP_PKI_ERROR
, message
, 1);
4158 # elif defined(HAVE_SSPISSL)
4159 http
->tls
= _sspiAlloc();
4165 http
->tls
->sock
= http
->fd
;
4166 dwSize
= sizeof(username
) / sizeof(TCHAR
);
4167 GetUserName(username
, &dwSize
);
4168 _sntprintf_s(commonName
, sizeof(commonName
) / sizeof(TCHAR
),
4169 sizeof(commonName
) / sizeof(TCHAR
), TEXT("CN=%s"), username
);
4171 if (!_sspiGetCredentials(http
->tls_credentials
, L
"ClientContainer",
4174 _sspiFree(http
->tls_credentials
);
4175 http
->tls_credentials
= NULL
;
4178 http
->status
= HTTP_ERROR
;
4180 _cupsSetError(IPP_PKI_ERROR
,
4181 _("Unable to establish a secure connection to host."), 1);
4186 _sspiSetAllowsAnyRoot(http
->tls_credentials
, TRUE
);
4187 _sspiSetAllowsExpiredCerts(http
->tls_credentials
, TRUE
);
4189 if (!_sspiConnect(http
->tls_credentials
, http
->hostname
))
4191 _sspiFree(http
->tls_credentials
);
4192 http
->tls_credentials
= NULL
;
4195 http
->status
= HTTP_ERROR
;
4197 _cupsSetError(IPP_PKI_ERROR
,
4198 _("Unable to establish a secure connection to host."), 1);
4202 # endif /* HAVE_CDSASSL */
4206 #endif /* HAVE_SSL */
4211 * 'http_shutdown_ssl()' - Shut down SSL/TLS on a connection.
4215 http_shutdown_ssl(http_t
*http
) /* I - Connection to server */
4218 SSL_CTX
*context
; /* Context for encryption */
4220 context
= SSL_get_SSL_CTX(http
->tls
);
4222 SSL_shutdown(http
->tls
);
4223 SSL_CTX_free(context
);
4224 SSL_free(http
->tls
);
4226 # elif defined(HAVE_GNUTLS)
4227 gnutls_certificate_client_credentials
*credentials
;
4228 /* TLS credentials */
4230 credentials
= (gnutls_certificate_client_credentials
*)(http
->tls_credentials
);
4232 gnutls_bye(http
->tls
, GNUTLS_SHUT_RDWR
);
4233 gnutls_deinit(http
->tls
);
4234 gnutls_certificate_free_credentials(*credentials
);
4237 # elif defined(HAVE_CDSASSL)
4238 while (SSLClose(http
->tls
) == errSSLWouldBlock
)
4241 SSLDisposeContext(http
->tls
);
4243 if (http
->tls_credentials
)
4244 CFRelease(http
->tls_credentials
);
4246 # elif defined(HAVE_SSPISSL)
4247 _sspiFree(http
->tls_credentials
);
4248 # endif /* HAVE_LIBSSL */
4251 http
->tls_credentials
= NULL
;
4253 #endif /* HAVE_SSL */
4258 * 'http_upgrade()' - Force upgrade to TLS encryption.
4261 static int /* O - Status of connection */
4262 http_upgrade(http_t
*http
) /* I - Connection to server */
4264 int ret
; /* Return value */
4265 http_t myhttp
; /* Local copy of HTTP data */
4268 DEBUG_printf(("7http_upgrade(%p)", http
));
4271 * Flush the connection to make sure any previous "Upgrade" message
4278 * Copy the HTTP data to a local variable so we can do the OPTIONS
4279 * request without interfering with the existing request data...
4282 memcpy(&myhttp
, http
, sizeof(myhttp
));
4285 * Send an OPTIONS request to the server, requiring SSL or TLS
4286 * encryption on the link...
4289 http
->field_authorization
= NULL
; /* Don't free the auth string */
4291 httpClearFields(http
);
4292 httpSetField(http
, HTTP_FIELD_CONNECTION
, "upgrade");
4293 httpSetField(http
, HTTP_FIELD_UPGRADE
, "TLS/1.2, TLS/1.1, TLS/1.0, SSL/3.0");
4295 if ((ret
= httpOptions(http
, "*")) == 0)
4298 * Wait for the secure connection...
4301 while (httpUpdate(http
) == HTTP_CONTINUE
);
4305 * Restore the HTTP request data...
4308 memcpy(http
->fields
, myhttp
.fields
, sizeof(http
->fields
));
4309 http
->data_encoding
= myhttp
.data_encoding
;
4310 http
->data_remaining
= myhttp
.data_remaining
;
4311 http
->_data_remaining
= myhttp
._data_remaining
;
4312 http
->expect
= myhttp
.expect
;
4313 http
->field_authorization
= myhttp
.field_authorization
;
4314 http
->digest_tries
= myhttp
.digest_tries
;
4317 * See if we actually went secure...
4323 * Server does not support HTTP upgrade...
4326 DEBUG_puts("8http_upgrade: Server does not support HTTP upgrade!");
4329 closesocket(http
->fd
);
4341 #endif /* HAVE_SSL */
4345 * 'http_write()' - Write a buffer to a HTTP connection.
4348 static int /* O - Number of bytes written */
4349 http_write(http_t
*http
, /* I - Connection to server */
4350 const char *buffer
, /* I - Buffer for data */
4351 int length
) /* I - Number of bytes to write */
4353 int tbytes
, /* Total bytes sent */
4354 bytes
; /* Bytes sent */
4357 DEBUG_printf(("2http_write(http=%p, buffer=%p, length=%d)", http
, buffer
,
4366 bytes
= http_write_ssl(http
, buffer
, length
);
4368 #endif /* HAVE_SSL */
4369 bytes
= send(http
->fd
, buffer
, length
, 0);
4374 if (WSAGetLastError() == WSAEINTR
)
4376 else if (WSAGetLastError() == WSAEWOULDBLOCK
)
4378 if (http
->timeout_cb
&& (*http
->timeout_cb
)(http
, http
->timeout_data
))
4381 http
->error
= WSAGetLastError();
4383 else if (WSAGetLastError() != http
->error
&&
4384 WSAGetLastError() != WSAECONNRESET
)
4386 http
->error
= WSAGetLastError();
4393 else if (errno
== EWOULDBLOCK
|| errno
== EAGAIN
)
4395 if (http
->timeout_cb
&& (*http
->timeout_cb
)(http
, http
->timeout_data
))
4397 else if (!http
->timeout_cb
&& errno
== EAGAIN
)
4400 http
->error
= errno
;
4402 else if (errno
!= http
->error
&& errno
!= ECONNRESET
)
4404 http
->error
= errno
;
4409 DEBUG_printf(("3http_write: error writing data (%s).",
4410 strerror(http
->error
)));
4421 http_debug_hex("http_write", buffer
- tbytes
, tbytes
);
4424 DEBUG_printf(("3http_write: Returning %d.", tbytes
));
4431 * 'http_write_chunk()' - Write a chunked buffer.
4434 static int /* O - Number bytes written */
4435 http_write_chunk(http_t
*http
, /* I - Connection to server */
4436 const char *buffer
, /* I - Buffer to write */
4437 int length
) /* I - Length of buffer */
4439 char header
[255]; /* Chunk header */
4440 int bytes
; /* Bytes written */
4443 DEBUG_printf(("7http_write_chunk(http=%p, buffer=%p, length=%d)",
4444 http
, buffer
, length
));
4447 * Write the chunk header, data, and trailer.
4450 sprintf(header
, "%x\r\n", length
);
4451 if (http_write(http
, header
, (int)strlen(header
)) < 0)
4453 DEBUG_puts("8http_write_chunk: http_write of length failed!");
4457 if ((bytes
= http_write(http
, buffer
, length
)) < 0)
4459 DEBUG_puts("8http_write_chunk: http_write of buffer failed!");
4463 if (http_write(http
, "\r\n", 2) < 0)
4465 DEBUG_puts("8http_write_chunk: http_write of CR LF failed!");
4475 * 'http_write_ssl()' - Write to a SSL/TLS connection.
4478 static int /* O - Bytes written */
4479 http_write_ssl(http_t
*http
, /* I - Connection to server */
4480 const char *buf
, /* I - Buffer holding data */
4481 int len
) /* I - Length of buffer */
4483 ssize_t result
; /* Return value */
4486 DEBUG_printf(("2http_write_ssl(http=%p, buf=%p, len=%d)", http
, buf
, len
));
4488 # if defined(HAVE_LIBSSL)
4489 result
= SSL_write((SSL
*)(http
->tls
), buf
, len
);
4491 # elif defined(HAVE_GNUTLS)
4492 result
= gnutls_record_send(http
->tls
, buf
, len
);
4494 if (result
< 0 && !errno
)
4497 * Convert GNU TLS error to errno value...
4502 case GNUTLS_E_INTERRUPTED
:
4506 case GNUTLS_E_AGAIN
:
4518 # elif defined(HAVE_CDSASSL)
4519 OSStatus error
; /* Error info */
4520 size_t processed
; /* Number of bytes processed */
4523 error
= SSLWrite(http
->tls
, buf
, len
, &processed
);
4528 result
= (int)processed
;
4531 case errSSLWouldBlock
:
4533 result
= (int)processed
;
4541 case errSSLClosedGraceful
:
4544 result
= (int)processed
;
4552 # elif defined(HAVE_SSPISSL)
4553 return _sspiWrite((_sspi_struct_t
*)http
->tls
, (void *)buf
, len
);
4554 # endif /* HAVE_LIBSSL */
4556 DEBUG_printf(("3http_write_ssl: Returning %d.", (int)result
));
4558 return ((int)result
);
4560 #endif /* HAVE_SSL */
4564 * End of "$Id: http.c 7850 2008-08-20 00:07:25Z mike $".