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1180 lines
29 KiB
1180 lines
29 KiB
/*
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* IPP utilities for CUPS.
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*
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* Copyright © 2007-2018 by Apple Inc.
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* Copyright © 1997-2007 by Easy Software Products.
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*
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* Licensed under Apache License v2.0. See the file "LICENSE" for more information.
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*/
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/*
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* Include necessary headers...
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*/
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#include "cups-private.h"
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#include "debug-internal.h"
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#include <fcntl.h>
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#include <sys/stat.h>
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#if defined(_WIN32) || defined(__EMX__)
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# include <io.h>
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#else
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# include <unistd.h>
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#endif /* _WIN32 || __EMX__ */
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#ifndef O_BINARY
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# define O_BINARY 0
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#endif /* O_BINARY */
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#ifndef MSG_DONTWAIT
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# define MSG_DONTWAIT 0
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#endif /* !MSG_DONTWAIT */
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/*
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* 'cupsDoFileRequest()' - Do an IPP request with a file.
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*
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* This function sends the IPP request and attached file to the specified
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* server, retrying and authenticating as necessary. The request is freed with
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* @link ippDelete@.
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*/
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ipp_t * /* O - Response data */
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cupsDoFileRequest(http_t *http, /* I - Connection to server or @code CUPS_HTTP_DEFAULT@ */
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ipp_t *request, /* I - IPP request */
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const char *resource, /* I - HTTP resource for POST */
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const char *filename) /* I - File to send or @code NULL@ for none */
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{
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ipp_t *response; /* IPP response data */
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int infile; /* Input file */
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DEBUG_printf(("cupsDoFileRequest(http=%p, request=%p(%s), resource=\"%s\", filename=\"%s\")", (void *)http, (void *)request, request ? ippOpString(request->request.op.operation_id) : "?", resource, filename));
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if (filename)
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{
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if ((infile = open(filename, O_RDONLY | O_BINARY)) < 0)
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{
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/*
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* Can't get file information!
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*/
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_cupsSetError(errno == ENOENT ? IPP_STATUS_ERROR_NOT_FOUND : IPP_STATUS_ERROR_NOT_AUTHORIZED,
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NULL, 0);
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ippDelete(request);
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return (NULL);
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}
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}
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else
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infile = -1;
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response = cupsDoIORequest(http, request, resource, infile, -1);
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if (infile >= 0)
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close(infile);
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return (response);
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}
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/*
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* 'cupsDoIORequest()' - Do an IPP request with file descriptors.
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*
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* This function sends the IPP request with the optional input file "infile" to
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* the specified server, retrying and authenticating as necessary. The request
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* is freed with @link ippDelete@.
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*
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* If "infile" is a valid file descriptor, @code cupsDoIORequest@ copies
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* all of the data from the file after the IPP request message.
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*
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* If "outfile" is a valid file descriptor, @code cupsDoIORequest@ copies
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* all of the data after the IPP response message to the file.
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*
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* @since CUPS 1.3/macOS 10.5@
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*/
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ipp_t * /* O - Response data */
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cupsDoIORequest(http_t *http, /* I - Connection to server or @code CUPS_HTTP_DEFAULT@ */
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ipp_t *request, /* I - IPP request */
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const char *resource, /* I - HTTP resource for POST */
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int infile, /* I - File to read from or -1 for none */
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int outfile) /* I - File to write to or -1 for none */
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{
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ipp_t *response = NULL; /* IPP response data */
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size_t length = 0; /* Content-Length value */
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http_status_t status; /* Status of HTTP request */
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struct stat fileinfo; /* File information */
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ssize_t bytes; /* Number of bytes read/written */
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char buffer[32768]; /* Output buffer */
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DEBUG_printf(("cupsDoIORequest(http=%p, request=%p(%s), resource=\"%s\", infile=%d, outfile=%d)", (void *)http, (void *)request, request ? ippOpString(request->request.op.operation_id) : "?", resource, infile, outfile));
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/*
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* Range check input...
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*/
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if (!request || !resource)
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{
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ippDelete(request);
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_cupsSetError(IPP_STATUS_ERROR_INTERNAL, strerror(EINVAL), 0);
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return (NULL);
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}
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/*
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* Get the default connection as needed...
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*/
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if (!http && (http = _cupsConnect()) == NULL)
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{
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ippDelete(request);
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return (NULL);
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}
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/*
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* See if we have a file to send...
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*/
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if (infile >= 0)
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{
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if (fstat(infile, &fileinfo))
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{
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/*
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* Can't get file information!
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*/
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_cupsSetError(errno == EBADF ? IPP_STATUS_ERROR_NOT_FOUND : IPP_STATUS_ERROR_NOT_AUTHORIZED, NULL, 0);
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ippDelete(request);
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return (NULL);
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}
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#ifdef _WIN32
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if (fileinfo.st_mode & _S_IFDIR)
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#else
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if (S_ISDIR(fileinfo.st_mode))
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#endif /* _WIN32 */
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{
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/*
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* Can't send a directory...
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*/
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_cupsSetError(IPP_STATUS_ERROR_NOT_POSSIBLE, strerror(EISDIR), 0);
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ippDelete(request);
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return (NULL);
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}
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#ifndef _WIN32
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if (!S_ISREG(fileinfo.st_mode))
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length = 0; /* Chunk when piping */
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else
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#endif /* !_WIN32 */
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length = ippLength(request) + (size_t)fileinfo.st_size;
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}
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else
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length = ippLength(request);
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DEBUG_printf(("2cupsDoIORequest: Request length=%ld, total length=%ld", (long)ippLength(request), (long)length));
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/*
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* Clear any "Local" authentication data since it is probably stale...
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*/
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if (http->authstring && !strncmp(http->authstring, "Local ", 6))
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httpSetAuthString(http, NULL, NULL);
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/*
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* Loop until we can send the request without authorization problems.
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*/
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while (response == NULL)
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{
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DEBUG_puts("2cupsDoIORequest: setup...");
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/*
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* Send the request...
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*/
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status = cupsSendRequest(http, request, resource, length);
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DEBUG_printf(("2cupsDoIORequest: status=%d", status));
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if (status == HTTP_STATUS_CONTINUE && request->state == IPP_STATE_DATA && infile >= 0)
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{
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DEBUG_puts("2cupsDoIORequest: file write...");
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/*
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* Send the file with the request...
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*/
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#ifndef _WIN32
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if (S_ISREG(fileinfo.st_mode))
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#endif /* _WIN32 */
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lseek(infile, 0, SEEK_SET);
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while ((bytes = read(infile, buffer, sizeof(buffer))) > 0)
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{
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if ((status = cupsWriteRequestData(http, buffer, (size_t)bytes))
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!= HTTP_STATUS_CONTINUE)
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break;
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}
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}
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/*
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* Get the server's response...
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*/
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if (status <= HTTP_STATUS_CONTINUE || status == HTTP_STATUS_OK)
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{
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response = cupsGetResponse(http, resource);
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status = httpGetStatus(http);
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}
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DEBUG_printf(("2cupsDoIORequest: status=%d", status));
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if (status == HTTP_STATUS_ERROR ||
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(status >= HTTP_STATUS_BAD_REQUEST && status != HTTP_STATUS_UNAUTHORIZED &&
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status != HTTP_STATUS_UPGRADE_REQUIRED))
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{
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_cupsSetHTTPError(status);
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break;
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}
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if (response && outfile >= 0)
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{
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/*
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* Write trailing data to file...
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*/
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while ((bytes = httpRead2(http, buffer, sizeof(buffer))) > 0)
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if (write(outfile, buffer, (size_t)bytes) < bytes)
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break;
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}
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if (http->state != HTTP_STATE_WAITING)
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{
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/*
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* Flush any remaining data...
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*/
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httpFlush(http);
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}
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}
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/*
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* Delete the original request and return the response...
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*/
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ippDelete(request);
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return (response);
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}
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/*
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* 'cupsDoRequest()' - Do an IPP request.
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*
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* This function sends the IPP request to the specified server, retrying
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* and authenticating as necessary. The request is freed with @link ippDelete@.
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*/
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ipp_t * /* O - Response data */
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cupsDoRequest(http_t *http, /* I - Connection to server or @code CUPS_HTTP_DEFAULT@ */
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ipp_t *request, /* I - IPP request */
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const char *resource) /* I - HTTP resource for POST */
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{
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DEBUG_printf(("cupsDoRequest(http=%p, request=%p(%s), resource=\"%s\")", (void *)http, (void *)request, request ? ippOpString(request->request.op.operation_id) : "?", resource));
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return (cupsDoIORequest(http, request, resource, -1, -1));
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}
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/*
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* 'cupsGetResponse()' - Get a response to an IPP request.
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*
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* Use this function to get the response for an IPP request sent using
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* @link cupsSendRequest@. For requests that return additional data, use
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* @link cupsReadResponseData@ after getting a successful response,
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* otherwise call @link httpFlush@ to complete the response processing.
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*
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* @since CUPS 1.4/macOS 10.6@
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*/
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ipp_t * /* O - Response or @code NULL@ on HTTP error */
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cupsGetResponse(http_t *http, /* I - Connection to server or @code CUPS_HTTP_DEFAULT@ */
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const char *resource) /* I - HTTP resource for POST */
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{
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http_status_t status; /* HTTP status */
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ipp_state_t state; /* IPP read state */
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ipp_t *response = NULL; /* IPP response */
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DEBUG_printf(("cupsGetResponse(http=%p, resource=\"%s\")", (void *)http, resource));
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DEBUG_printf(("1cupsGetResponse: http->state=%d", http ? http->state : HTTP_STATE_ERROR));
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/*
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* Connect to the default server as needed...
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*/
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if (!http)
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{
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_cups_globals_t *cg = _cupsGlobals();
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/* Pointer to library globals */
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if ((http = cg->http) == NULL)
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{
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_cupsSetError(IPP_STATUS_ERROR_INTERNAL, _("No active connection."), 1);
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DEBUG_puts("1cupsGetResponse: No active connection - returning NULL.");
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return (NULL);
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}
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}
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if (http->state != HTTP_STATE_POST_RECV && http->state != HTTP_STATE_POST_SEND)
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{
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_cupsSetError(IPP_STATUS_ERROR_INTERNAL, _("No request sent."), 1);
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DEBUG_puts("1cupsGetResponse: Not in POST state - returning NULL.");
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return (NULL);
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}
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/*
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* Check for an unfinished chunked request...
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*/
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if (http->data_encoding == HTTP_ENCODING_CHUNKED)
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{
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/*
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* Send a 0-length chunk to finish off the request...
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*/
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DEBUG_puts("2cupsGetResponse: Finishing chunked POST...");
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if (httpWrite2(http, "", 0) < 0)
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return (NULL);
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}
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/*
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* Wait for a response from the server...
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*/
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DEBUG_printf(("2cupsGetResponse: Update loop, http->status=%d...",
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http->status));
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do
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{
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status = httpUpdate(http);
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}
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while (status == HTTP_STATUS_CONTINUE);
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DEBUG_printf(("2cupsGetResponse: status=%d", status));
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if (status == HTTP_STATUS_OK)
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{
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/*
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* Get the IPP response...
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*/
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response = ippNew();
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while ((state = ippRead(http, response)) != IPP_STATE_DATA)
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if (state == IPP_STATE_ERROR)
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break;
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if (state == IPP_STATE_ERROR)
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{
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/*
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* Flush remaining data and delete the response...
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*/
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DEBUG_puts("1cupsGetResponse: IPP read error!");
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httpFlush(http);
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ippDelete(response);
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response = NULL;
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http->status = status = HTTP_STATUS_ERROR;
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http->error = EINVAL;
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}
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}
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else if (status != HTTP_STATUS_ERROR)
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{
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/*
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* Flush any error message...
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*/
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httpFlush(http);
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/*
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* Then handle encryption and authentication...
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*/
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if (status == HTTP_STATUS_UNAUTHORIZED)
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{
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/*
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* See if we can do authentication...
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*/
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DEBUG_puts("2cupsGetResponse: Need authorization...");
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if (!cupsDoAuthentication(http, "POST", resource))
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httpReconnect2(http, 30000, NULL);
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else
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http->status = status = HTTP_STATUS_CUPS_AUTHORIZATION_CANCELED;
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}
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#ifdef HAVE_SSL
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else if (status == HTTP_STATUS_UPGRADE_REQUIRED)
|
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{
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/*
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* Force a reconnect with encryption...
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*/
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DEBUG_puts("2cupsGetResponse: Need encryption...");
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if (!httpReconnect2(http, 30000, NULL))
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httpEncryption(http, HTTP_ENCRYPTION_REQUIRED);
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}
|
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#endif /* HAVE_SSL */
|
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}
|
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|
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if (response)
|
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{
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ipp_attribute_t *attr; /* status-message attribute */
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|
|
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attr = ippFindAttribute(response, "status-message", IPP_TAG_TEXT);
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DEBUG_printf(("1cupsGetResponse: status-code=%s, status-message=\"%s\"",
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ippErrorString(response->request.status.status_code),
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attr ? attr->values[0].string.text : ""));
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|
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_cupsSetError(response->request.status.status_code,
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attr ? attr->values[0].string.text :
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ippErrorString(response->request.status.status_code), 0);
|
|
}
|
|
|
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return (response);
|
|
}
|
|
|
|
|
|
/*
|
|
* 'cupsLastError()' - Return the last IPP status code received on the current
|
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* thread.
|
|
*/
|
|
|
|
ipp_status_t /* O - IPP status code from last request */
|
|
cupsLastError(void)
|
|
{
|
|
return (_cupsGlobals()->last_error);
|
|
}
|
|
|
|
|
|
/*
|
|
* 'cupsLastErrorString()' - Return the last IPP status-message received on the
|
|
* current thread.
|
|
*
|
|
* @since CUPS 1.2/macOS 10.5@
|
|
*/
|
|
|
|
const char * /* O - status-message text from last request */
|
|
cupsLastErrorString(void)
|
|
{
|
|
return (_cupsGlobals()->last_status_message);
|
|
}
|
|
|
|
|
|
/*
|
|
* '_cupsNextDelay()' - Return the next retry delay value.
|
|
*
|
|
* This function currently returns the Fibonacci sequence 1 1 2 3 5 8.
|
|
*
|
|
* Pass 0 for the current delay value to initialize the sequence.
|
|
*/
|
|
|
|
int /* O - Next delay value */
|
|
_cupsNextDelay(int current, /* I - Current delay value or 0 */
|
|
int *previous) /* IO - Previous delay value */
|
|
{
|
|
int next; /* Next delay value */
|
|
|
|
|
|
if (current > 0)
|
|
{
|
|
next = (current + *previous) % 12;
|
|
*previous = next < current ? 0 : current;
|
|
}
|
|
else
|
|
{
|
|
next = 1;
|
|
*previous = 0;
|
|
}
|
|
|
|
return (next);
|
|
}
|
|
|
|
|
|
/*
|
|
* 'cupsReadResponseData()' - Read additional data after the IPP response.
|
|
*
|
|
* This function is used after @link cupsGetResponse@ to read the PPD or document
|
|
* files from @code CUPS_GET_PPD@ and @code CUPS_GET_DOCUMENT@ requests,
|
|
* respectively.
|
|
*
|
|
* @since CUPS 1.4/macOS 10.6@
|
|
*/
|
|
|
|
ssize_t /* O - Bytes read, 0 on EOF, -1 on error */
|
|
cupsReadResponseData(
|
|
http_t *http, /* I - Connection to server or @code CUPS_HTTP_DEFAULT@ */
|
|
char *buffer, /* I - Buffer to use */
|
|
size_t length) /* I - Number of bytes to read */
|
|
{
|
|
/*
|
|
* Get the default connection as needed...
|
|
*/
|
|
|
|
DEBUG_printf(("cupsReadResponseData(http=%p, buffer=%p, length=" CUPS_LLFMT ")", (void *)http, (void *)buffer, CUPS_LLCAST length));
|
|
|
|
if (!http)
|
|
{
|
|
_cups_globals_t *cg = _cupsGlobals();
|
|
/* Pointer to library globals */
|
|
|
|
if ((http = cg->http) == NULL)
|
|
{
|
|
_cupsSetError(IPP_STATUS_ERROR_INTERNAL, _("No active connection"), 1);
|
|
return (-1);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Then read from the HTTP connection...
|
|
*/
|
|
|
|
return (httpRead2(http, buffer, length));
|
|
}
|
|
|
|
|
|
/*
|
|
* 'cupsSendRequest()' - Send an IPP request.
|
|
*
|
|
* Use @link cupsWriteRequestData@ to write any additional data (document, PPD
|
|
* file, etc.) for the request, @link cupsGetResponse@ to get the IPP response,
|
|
* and @link cupsReadResponseData@ to read any additional data following the
|
|
* response. Only one request can be sent/queued at a time per @code http_t@
|
|
* connection.
|
|
*
|
|
* Returns the initial HTTP status code, which will be @code HTTP_STATUS_CONTINUE@
|
|
* on a successful send of the request.
|
|
*
|
|
* Note: Unlike @link cupsDoFileRequest@, @link cupsDoIORequest@, and
|
|
* @link cupsDoRequest@, the request is NOT freed with @link ippDelete@.
|
|
*
|
|
* @since CUPS 1.4/macOS 10.6@
|
|
*/
|
|
|
|
http_status_t /* O - Initial HTTP status */
|
|
cupsSendRequest(http_t *http, /* I - Connection to server or @code CUPS_HTTP_DEFAULT@ */
|
|
ipp_t *request, /* I - IPP request */
|
|
const char *resource, /* I - Resource path */
|
|
size_t length) /* I - Length of data to follow or @code CUPS_LENGTH_VARIABLE@ */
|
|
{
|
|
http_status_t status; /* Status of HTTP request */
|
|
int got_status; /* Did we get the status? */
|
|
ipp_state_t state; /* State of IPP processing */
|
|
http_status_t expect; /* Expect: header to use */
|
|
char date[256]; /* Date: header value */
|
|
int digest; /* Are we using Digest authentication? */
|
|
|
|
|
|
DEBUG_printf(("cupsSendRequest(http=%p, request=%p(%s), resource=\"%s\", length=" CUPS_LLFMT ")", (void *)http, (void *)request, request ? ippOpString(request->request.op.operation_id) : "?", resource, CUPS_LLCAST length));
|
|
|
|
/*
|
|
* Range check input...
|
|
*/
|
|
|
|
if (!request || !resource)
|
|
{
|
|
_cupsSetError(IPP_STATUS_ERROR_INTERNAL, strerror(EINVAL), 0);
|
|
|
|
return (HTTP_STATUS_ERROR);
|
|
}
|
|
|
|
/*
|
|
* Get the default connection as needed...
|
|
*/
|
|
|
|
if (!http && (http = _cupsConnect()) == NULL)
|
|
return (HTTP_STATUS_SERVICE_UNAVAILABLE);
|
|
|
|
/*
|
|
* If the prior request was not flushed out, do so now...
|
|
*/
|
|
|
|
if (http->state == HTTP_STATE_GET_SEND ||
|
|
http->state == HTTP_STATE_POST_SEND)
|
|
{
|
|
DEBUG_puts("2cupsSendRequest: Flush prior response.");
|
|
httpFlush(http);
|
|
}
|
|
else if (http->state != HTTP_STATE_WAITING)
|
|
{
|
|
DEBUG_printf(("1cupsSendRequest: Unknown HTTP state (%d), "
|
|
"reconnecting.", http->state));
|
|
if (httpReconnect2(http, 30000, NULL))
|
|
return (HTTP_STATUS_ERROR);
|
|
}
|
|
|
|
#ifdef HAVE_SSL
|
|
/*
|
|
* See if we have an auth-info attribute and are communicating over
|
|
* a non-local link. If so, encrypt the link so that we can pass
|
|
* the authentication information securely...
|
|
*/
|
|
|
|
if (ippFindAttribute(request, "auth-info", IPP_TAG_TEXT) &&
|
|
!httpAddrLocalhost(http->hostaddr) && !http->tls &&
|
|
httpEncryption(http, HTTP_ENCRYPTION_REQUIRED))
|
|
{
|
|
DEBUG_puts("1cupsSendRequest: Unable to encrypt connection.");
|
|
return (HTTP_STATUS_SERVICE_UNAVAILABLE);
|
|
}
|
|
#endif /* HAVE_SSL */
|
|
|
|
/*
|
|
* Reconnect if the last response had a "Connection: close"...
|
|
*/
|
|
|
|
if (!_cups_strcasecmp(httpGetField(http, HTTP_FIELD_CONNECTION), "close"))
|
|
{
|
|
DEBUG_puts("2cupsSendRequest: Connection: close");
|
|
httpClearFields(http);
|
|
if (httpReconnect2(http, 30000, NULL))
|
|
{
|
|
DEBUG_puts("1cupsSendRequest: Unable to reconnect.");
|
|
return (HTTP_STATUS_SERVICE_UNAVAILABLE);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Loop until we can send the request without authorization problems.
|
|
*/
|
|
|
|
expect = HTTP_STATUS_CONTINUE;
|
|
|
|
for (;;)
|
|
{
|
|
DEBUG_puts("2cupsSendRequest: Setup...");
|
|
|
|
/*
|
|
* Setup the HTTP variables needed...
|
|
*/
|
|
|
|
httpClearFields(http);
|
|
httpSetExpect(http, expect);
|
|
httpSetField(http, HTTP_FIELD_CONTENT_TYPE, "application/ipp");
|
|
httpSetField(http, HTTP_FIELD_DATE, httpGetDateString2(time(NULL), date, (int)sizeof(date)));
|
|
httpSetLength(http, length);
|
|
|
|
digest = http->authstring && !strncmp(http->authstring, "Digest ", 7);
|
|
|
|
if (digest)
|
|
{
|
|
/*
|
|
* Update the Digest authentication string...
|
|
*/
|
|
|
|
_httpSetDigestAuthString(http, http->nextnonce, "POST", resource);
|
|
}
|
|
|
|
#ifdef HAVE_GSSAPI
|
|
if (http->authstring && !strncmp(http->authstring, "Negotiate", 9))
|
|
{
|
|
/*
|
|
* Do not use cached Kerberos credentials since they will look like a
|
|
* "replay" attack...
|
|
*/
|
|
|
|
_cupsSetNegotiateAuthString(http, "POST", resource);
|
|
}
|
|
#endif /* HAVE_GSSAPI */
|
|
|
|
httpSetField(http, HTTP_FIELD_AUTHORIZATION, http->authstring);
|
|
|
|
DEBUG_printf(("2cupsSendRequest: authstring=\"%s\"", http->authstring));
|
|
|
|
/*
|
|
* Try the request...
|
|
*/
|
|
|
|
DEBUG_puts("2cupsSendRequest: Sending HTTP POST...");
|
|
|
|
if (httpPost(http, resource))
|
|
{
|
|
DEBUG_puts("2cupsSendRequest: POST failed, reconnecting.");
|
|
if (httpReconnect2(http, 30000, NULL))
|
|
{
|
|
DEBUG_puts("1cupsSendRequest: Unable to reconnect.");
|
|
return (HTTP_STATUS_SERVICE_UNAVAILABLE);
|
|
}
|
|
else
|
|
continue;
|
|
}
|
|
|
|
/*
|
|
* Send the IPP data...
|
|
*/
|
|
|
|
DEBUG_puts("2cupsSendRequest: Writing IPP request...");
|
|
|
|
request->state = IPP_STATE_IDLE;
|
|
status = HTTP_STATUS_CONTINUE;
|
|
got_status = 0;
|
|
|
|
while ((state = ippWrite(http, request)) != IPP_STATE_DATA)
|
|
{
|
|
if (httpCheck(http))
|
|
{
|
|
got_status = 1;
|
|
|
|
_httpUpdate(http, &status);
|
|
if (status >= HTTP_STATUS_MULTIPLE_CHOICES)
|
|
break;
|
|
}
|
|
else if (state == IPP_STATE_ERROR)
|
|
break;
|
|
}
|
|
|
|
if (state == IPP_STATE_ERROR)
|
|
{
|
|
/*
|
|
* We weren't able to send the IPP request. But did we already get a HTTP
|
|
* error status?
|
|
*/
|
|
|
|
if (!got_status || status < HTTP_STATUS_MULTIPLE_CHOICES)
|
|
{
|
|
/*
|
|
* No, something else went wrong.
|
|
*/
|
|
|
|
DEBUG_puts("1cupsSendRequest: Unable to send IPP request.");
|
|
|
|
http->status = HTTP_STATUS_ERROR;
|
|
http->state = HTTP_STATE_WAITING;
|
|
|
|
return (HTTP_STATUS_ERROR);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Wait up to 1 second to get the 100-continue response as needed...
|
|
*/
|
|
|
|
if (!got_status || (digest && status == HTTP_STATUS_CONTINUE))
|
|
{
|
|
if (expect == HTTP_STATUS_CONTINUE || digest)
|
|
{
|
|
DEBUG_puts("2cupsSendRequest: Waiting for 100-continue...");
|
|
|
|
if (httpWait(http, 1000))
|
|
_httpUpdate(http, &status);
|
|
}
|
|
else if (httpCheck(http))
|
|
_httpUpdate(http, &status);
|
|
}
|
|
|
|
DEBUG_printf(("2cupsSendRequest: status=%d", status));
|
|
|
|
/*
|
|
* Process the current HTTP status...
|
|
*/
|
|
|
|
if (status >= HTTP_STATUS_MULTIPLE_CHOICES)
|
|
{
|
|
int temp_status; /* Temporary status */
|
|
|
|
_cupsSetHTTPError(status);
|
|
|
|
do
|
|
{
|
|
temp_status = httpUpdate(http);
|
|
}
|
|
while (temp_status != HTTP_STATUS_ERROR &&
|
|
http->state == HTTP_STATE_POST_RECV);
|
|
|
|
httpFlush(http);
|
|
}
|
|
|
|
switch (status)
|
|
{
|
|
case HTTP_STATUS_CONTINUE :
|
|
case HTTP_STATUS_OK :
|
|
case HTTP_STATUS_ERROR :
|
|
DEBUG_printf(("1cupsSendRequest: Returning %d.", status));
|
|
return (status);
|
|
|
|
case HTTP_STATUS_UNAUTHORIZED :
|
|
if (cupsDoAuthentication(http, "POST", resource))
|
|
{
|
|
DEBUG_puts("1cupsSendRequest: Returning HTTP_STATUS_CUPS_AUTHORIZATION_CANCELED.");
|
|
return (HTTP_STATUS_CUPS_AUTHORIZATION_CANCELED);
|
|
}
|
|
|
|
DEBUG_puts("2cupsSendRequest: Reconnecting after HTTP_STATUS_UNAUTHORIZED.");
|
|
|
|
if (httpReconnect2(http, 30000, NULL))
|
|
{
|
|
DEBUG_puts("1cupsSendRequest: Unable to reconnect.");
|
|
return (HTTP_STATUS_SERVICE_UNAVAILABLE);
|
|
}
|
|
break;
|
|
|
|
#ifdef HAVE_SSL
|
|
case HTTP_STATUS_UPGRADE_REQUIRED :
|
|
/*
|
|
* Flush any error message, reconnect, and then upgrade with
|
|
* encryption...
|
|
*/
|
|
|
|
DEBUG_puts("2cupsSendRequest: Reconnecting after "
|
|
"HTTP_STATUS_UPGRADE_REQUIRED.");
|
|
|
|
if (httpReconnect2(http, 30000, NULL))
|
|
{
|
|
DEBUG_puts("1cupsSendRequest: Unable to reconnect.");
|
|
return (HTTP_STATUS_SERVICE_UNAVAILABLE);
|
|
}
|
|
|
|
DEBUG_puts("2cupsSendRequest: Upgrading to TLS.");
|
|
if (httpEncryption(http, HTTP_ENCRYPTION_REQUIRED))
|
|
{
|
|
DEBUG_puts("1cupsSendRequest: Unable to encrypt connection.");
|
|
return (HTTP_STATUS_SERVICE_UNAVAILABLE);
|
|
}
|
|
break;
|
|
#endif /* HAVE_SSL */
|
|
|
|
case HTTP_STATUS_EXPECTATION_FAILED :
|
|
/*
|
|
* Don't try using the Expect: header the next time around...
|
|
*/
|
|
|
|
expect = (http_status_t)0;
|
|
|
|
DEBUG_puts("2cupsSendRequest: Reconnecting after "
|
|
"HTTP_EXPECTATION_FAILED.");
|
|
|
|
if (httpReconnect2(http, 30000, NULL))
|
|
{
|
|
DEBUG_puts("1cupsSendRequest: Unable to reconnect.");
|
|
return (HTTP_STATUS_SERVICE_UNAVAILABLE);
|
|
}
|
|
break;
|
|
|
|
default :
|
|
/*
|
|
* Some other error...
|
|
*/
|
|
|
|
return (status);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* 'cupsWriteRequestData()' - Write additional data after an IPP request.
|
|
*
|
|
* This function is used after @link cupsSendRequest@ to provide a PPD and
|
|
* after @link cupsStartDocument@ to provide a document file.
|
|
*
|
|
* @since CUPS 1.4/macOS 10.6@
|
|
*/
|
|
|
|
http_status_t /* O - @code HTTP_STATUS_CONTINUE@ if OK or HTTP status on error */
|
|
cupsWriteRequestData(
|
|
http_t *http, /* I - Connection to server or @code CUPS_HTTP_DEFAULT@ */
|
|
const char *buffer, /* I - Bytes to write */
|
|
size_t length) /* I - Number of bytes to write */
|
|
{
|
|
int wused; /* Previous bytes in buffer */
|
|
|
|
|
|
/*
|
|
* Get the default connection as needed...
|
|
*/
|
|
|
|
DEBUG_printf(("cupsWriteRequestData(http=%p, buffer=%p, length=" CUPS_LLFMT ")", (void *)http, (void *)buffer, CUPS_LLCAST length));
|
|
|
|
if (!http)
|
|
{
|
|
_cups_globals_t *cg = _cupsGlobals();
|
|
/* Pointer to library globals */
|
|
|
|
if ((http = cg->http) == NULL)
|
|
{
|
|
_cupsSetError(IPP_STATUS_ERROR_INTERNAL, _("No active connection"), 1);
|
|
DEBUG_puts("1cupsWriteRequestData: Returning HTTP_STATUS_ERROR.");
|
|
return (HTTP_STATUS_ERROR);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Then write to the HTTP connection...
|
|
*/
|
|
|
|
wused = http->wused;
|
|
|
|
if (httpWrite2(http, buffer, length) < 0)
|
|
{
|
|
DEBUG_puts("1cupsWriteRequestData: Returning HTTP_STATUS_ERROR.");
|
|
_cupsSetError(IPP_STATUS_ERROR_INTERNAL, strerror(http->error), 0);
|
|
return (HTTP_STATUS_ERROR);
|
|
}
|
|
|
|
/*
|
|
* Finally, check if we have any pending data from the server...
|
|
*/
|
|
|
|
if (length >= HTTP_MAX_BUFFER ||
|
|
http->wused < wused ||
|
|
(wused > 0 && (size_t)http->wused == length))
|
|
{
|
|
/*
|
|
* We've written something to the server, so check for response data...
|
|
*/
|
|
|
|
if (_httpWait(http, 0, 1))
|
|
{
|
|
http_status_t status; /* Status from _httpUpdate */
|
|
|
|
_httpUpdate(http, &status);
|
|
if (status >= HTTP_STATUS_MULTIPLE_CHOICES)
|
|
{
|
|
_cupsSetHTTPError(status);
|
|
|
|
do
|
|
{
|
|
status = httpUpdate(http);
|
|
}
|
|
while (status != HTTP_STATUS_ERROR && http->state == HTTP_STATE_POST_RECV);
|
|
|
|
httpFlush(http);
|
|
}
|
|
|
|
DEBUG_printf(("1cupsWriteRequestData: Returning %d.\n", status));
|
|
return (status);
|
|
}
|
|
}
|
|
|
|
DEBUG_puts("1cupsWriteRequestData: Returning HTTP_STATUS_CONTINUE.");
|
|
return (HTTP_STATUS_CONTINUE);
|
|
}
|
|
|
|
|
|
/*
|
|
* '_cupsConnect()' - Get the default server connection...
|
|
*/
|
|
|
|
http_t * /* O - HTTP connection */
|
|
_cupsConnect(void)
|
|
{
|
|
_cups_globals_t *cg = _cupsGlobals(); /* Pointer to library globals */
|
|
|
|
|
|
/*
|
|
* See if we are connected to the same server...
|
|
*/
|
|
|
|
if (cg->http)
|
|
{
|
|
/*
|
|
* Compare the connection hostname, port, and encryption settings to
|
|
* the cached defaults; these were initialized the first time we
|
|
* connected...
|
|
*/
|
|
|
|
if (strcmp(cg->http->hostname, cg->server) ||
|
|
#ifdef AF_LOCAL
|
|
(httpAddrFamily(cg->http->hostaddr) != AF_LOCAL && cg->ipp_port != httpAddrPort(cg->http->hostaddr)) ||
|
|
#else
|
|
cg->ipp_port != httpAddrPort(cg->http->hostaddr) ||
|
|
#endif /* AF_LOCAL */
|
|
(cg->http->encryption != cg->encryption &&
|
|
cg->http->encryption == HTTP_ENCRYPTION_NEVER))
|
|
{
|
|
/*
|
|
* Need to close the current connection because something has changed...
|
|
*/
|
|
|
|
httpClose(cg->http);
|
|
cg->http = NULL;
|
|
}
|
|
else
|
|
{
|
|
/*
|
|
* Same server, see if the connection is still established...
|
|
*/
|
|
|
|
char ch; /* Connection check byte */
|
|
ssize_t n; /* Number of bytes */
|
|
|
|
#ifdef _WIN32
|
|
if ((n = recv(cg->http->fd, &ch, 1, MSG_PEEK)) == 0 ||
|
|
(n < 0 && WSAGetLastError() != WSAEWOULDBLOCK))
|
|
#else
|
|
if ((n = recv(cg->http->fd, &ch, 1, MSG_PEEK | MSG_DONTWAIT)) == 0 ||
|
|
(n < 0 && errno != EWOULDBLOCK))
|
|
#endif /* _WIN32 */
|
|
{
|
|
/*
|
|
* Nope, close the connection...
|
|
*/
|
|
|
|
httpClose(cg->http);
|
|
cg->http = NULL;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* (Re)connect as needed...
|
|
*/
|
|
|
|
if (!cg->http)
|
|
{
|
|
if ((cg->http = httpConnect2(cupsServer(), ippPort(), NULL, AF_UNSPEC,
|
|
cupsEncryption(), 1, 30000, NULL)) == NULL)
|
|
{
|
|
if (errno)
|
|
_cupsSetError(IPP_STATUS_ERROR_SERVICE_UNAVAILABLE, NULL, 0);
|
|
else
|
|
_cupsSetError(IPP_STATUS_ERROR_SERVICE_UNAVAILABLE,
|
|
_("Unable to connect to host."), 1);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Return the cached connection...
|
|
*/
|
|
|
|
return (cg->http);
|
|
}
|
|
|
|
|
|
/*
|
|
* '_cupsSetError()' - Set the last IPP status code and status-message.
|
|
*/
|
|
|
|
void
|
|
_cupsSetError(ipp_status_t status, /* I - IPP status code */
|
|
const char *message, /* I - status-message value */
|
|
int localize) /* I - Localize the message? */
|
|
{
|
|
_cups_globals_t *cg; /* Global data */
|
|
|
|
|
|
if (!message && errno)
|
|
{
|
|
message = strerror(errno);
|
|
localize = 0;
|
|
}
|
|
|
|
cg = _cupsGlobals();
|
|
cg->last_error = status;
|
|
|
|
if (cg->last_status_message)
|
|
{
|
|
_cupsStrFree(cg->last_status_message);
|
|
|
|
cg->last_status_message = NULL;
|
|
}
|
|
|
|
if (message)
|
|
{
|
|
if (localize)
|
|
{
|
|
/*
|
|
* Get the message catalog...
|
|
*/
|
|
|
|
if (!cg->lang_default)
|
|
cg->lang_default = cupsLangDefault();
|
|
|
|
cg->last_status_message = _cupsStrAlloc(_cupsLangString(cg->lang_default,
|
|
message));
|
|
}
|
|
else
|
|
cg->last_status_message = _cupsStrAlloc(message);
|
|
}
|
|
|
|
DEBUG_printf(("4_cupsSetError: last_error=%s, last_status_message=\"%s\"",
|
|
ippErrorString(cg->last_error), cg->last_status_message));
|
|
}
|
|
|
|
|
|
/*
|
|
* '_cupsSetHTTPError()' - Set the last error using the HTTP status.
|
|
*/
|
|
|
|
void
|
|
_cupsSetHTTPError(http_status_t status) /* I - HTTP status code */
|
|
{
|
|
switch (status)
|
|
{
|
|
case HTTP_STATUS_NOT_FOUND :
|
|
_cupsSetError(IPP_STATUS_ERROR_NOT_FOUND, httpStatus(status), 0);
|
|
break;
|
|
|
|
case HTTP_STATUS_UNAUTHORIZED :
|
|
_cupsSetError(IPP_STATUS_ERROR_NOT_AUTHENTICATED, httpStatus(status), 0);
|
|
break;
|
|
|
|
case HTTP_STATUS_CUPS_AUTHORIZATION_CANCELED :
|
|
_cupsSetError(IPP_STATUS_ERROR_CUPS_AUTHENTICATION_CANCELED, httpStatus(status), 0);
|
|
break;
|
|
|
|
case HTTP_STATUS_FORBIDDEN :
|
|
_cupsSetError(IPP_STATUS_ERROR_FORBIDDEN, httpStatus(status), 0);
|
|
break;
|
|
|
|
case HTTP_STATUS_BAD_REQUEST :
|
|
_cupsSetError(IPP_STATUS_ERROR_BAD_REQUEST, httpStatus(status), 0);
|
|
break;
|
|
|
|
case HTTP_STATUS_REQUEST_TOO_LARGE :
|
|
_cupsSetError(IPP_STATUS_ERROR_REQUEST_VALUE, httpStatus(status), 0);
|
|
break;
|
|
|
|
case HTTP_STATUS_NOT_IMPLEMENTED :
|
|
_cupsSetError(IPP_STATUS_ERROR_OPERATION_NOT_SUPPORTED, httpStatus(status), 0);
|
|
break;
|
|
|
|
case HTTP_STATUS_NOT_SUPPORTED :
|
|
_cupsSetError(IPP_STATUS_ERROR_VERSION_NOT_SUPPORTED, httpStatus(status), 0);
|
|
break;
|
|
|
|
case HTTP_STATUS_UPGRADE_REQUIRED :
|
|
_cupsSetError(IPP_STATUS_ERROR_CUPS_UPGRADE_REQUIRED, httpStatus(status), 0);
|
|
break;
|
|
|
|
case HTTP_STATUS_CUPS_PKI_ERROR :
|
|
_cupsSetError(IPP_STATUS_ERROR_CUPS_PKI, httpStatus(status), 0);
|
|
break;
|
|
|
|
case HTTP_STATUS_ERROR :
|
|
_cupsSetError(IPP_STATUS_ERROR_INTERNAL, strerror(errno), 0);
|
|
break;
|
|
|
|
default :
|
|
DEBUG_printf(("4_cupsSetHTTPError: HTTP error %d mapped to "
|
|
"IPP_STATUS_ERROR_SERVICE_UNAVAILABLE!", status));
|
|
_cupsSetError(IPP_STATUS_ERROR_SERVICE_UNAVAILABLE, httpStatus(status), 0);
|
|
break;
|
|
}
|
|
}
|