const char * /* O - Device URI or @code NULL@ */
cupsBackendDeviceURI(char **argv) /* I - Command-line arguments */
{
const char *device_uri, /* Device URI */
*auth_info_required; /* AUTH_INFO_REQUIRED env var */
_cups_globals_t *cg = _cupsGlobals(); /* Global info */
int options; /* Resolve options */
ppd_file_t *ppd; /* PPD file */
ppd_attr_t *ppdattr; /* PPD attribute */
if ((device_uri = getenv("DEVICE_URI")) == NULL)
{
if (!argv || !argv[0] || !strchr(argv[0], ':'))
return (NULL);
device_uri = argv[0];
}
options = _HTTP_RESOLVE_STDERR;
if ((auth_info_required = getenv("AUTH_INFO_REQUIRED")) != NULL &&
!strcmp(auth_info_required, "negotiate"))
options |= _HTTP_RESOLVE_FQDN;
if ((ppd = ppdOpenFile(getenv("PPD"))) != NULL)
{
if ((ppdattr = ppdFindAttr(ppd, "cupsIPPFaxOut", NULL)) != NULL &&
!_cups_strcasecmp(ppdattr->value, "true"))
options |= _HTTP_RESOLVE_FAXOUT;
ppdClose(ppd);
}
return (_httpResolveURI(device_uri, cg->resolved_uri,
sizeof(cg->resolved_uri), options, NULL, NULL));
}
int /* O - Exit status */
main(int argc, /* I - Number of command-line arguments */
char *argv[]) /* I - Command-line arguments */
{
int i, j, k; /* Looping vars */
http_t *http; /* HTTP connection */
http_encryption_t encryption; /* Encryption type */
http_status_t status; /* Status of GET command */
int failures; /* Number of test failures */
char buffer[8192]; /* Input buffer */
long bytes; /* Number of bytes read */
FILE *out; /* Output file */
char encode[256], /* Base64-encoded string */
decode[256]; /* Base64-decoded string */
int decodelen; /* Length of decoded string */
char scheme[HTTP_MAX_URI], /* Scheme from URI */
hostname[HTTP_MAX_URI], /* Hostname from URI */
username[HTTP_MAX_URI], /* Username:password from URI */
resource[HTTP_MAX_URI]; /* Resource from URI */
int port; /* Port number from URI */
http_uri_status_t uri_status; /* Status of URI separation */
http_addrlist_t *addrlist, /* Address list */
*addr; /* Current address */
off_t length, total; /* Length and total bytes */
time_t start, current; /* Start and end time */
const char *encoding; /* Negotiated Content-Encoding */
static const char * const uri_status_strings[] =
{
"HTTP_URI_STATUS_OVERFLOW",
"HTTP_URI_STATUS_BAD_ARGUMENTS",
"HTTP_URI_STATUS_BAD_RESOURCE",
"HTTP_URI_STATUS_BAD_PORT",
"HTTP_URI_STATUS_BAD_HOSTNAME",
"HTTP_URI_STATUS_BAD_USERNAME",
"HTTP_URI_STATUS_BAD_SCHEME",
"HTTP_URI_STATUS_BAD_URI",
"HTTP_URI_STATUS_OK",
"HTTP_URI_STATUS_MISSING_SCHEME",
"HTTP_URI_STATUS_UNKNOWN_SCHEME",
"HTTP_URI_STATUS_MISSING_RESOURCE"
};
/*
* Do API tests if we don't have a URL on the command-line...
*/
if (argc == 1)
{
failures = 0;
/*
* httpGetDateString()/httpGetDateTime()
*/
fputs("httpGetDateString()/httpGetDateTime(): ", stdout);
start = time(NULL);
strlcpy(buffer, httpGetDateString(start), sizeof(buffer));
current = httpGetDateTime(buffer);
i = (int)(current - start);
if (i < 0)
i = -i;
if (!i)
puts("PASS");
else
{
failures ++;
puts("FAIL");
printf(" Difference is %d seconds, %02d:%02d:%02d...\n", i, i / 3600,
(i / 60) % 60, i % 60);
printf(" httpGetDateString(%d) returned \"%s\"\n", (int)start, buffer);
printf(" httpGetDateTime(\"%s\") returned %d\n", buffer, (int)current);
printf(" httpGetDateString(%d) returned \"%s\"\n", (int)current,
httpGetDateString(current));
}
/*
* httpDecode64_2()/httpEncode64_2()
*/
fputs("httpDecode64_2()/httpEncode64_2(): ", stdout);
for (i = 0, j = 0; i < (int)(sizeof(base64_tests) / sizeof(base64_tests[0])); i ++)
{
httpEncode64_2(encode, sizeof(encode), base64_tests[i][0],
(int)strlen(base64_tests[i][0]));
decodelen = (int)sizeof(decode);
httpDecode64_2(decode, &decodelen, base64_tests[i][1]);
if (strcmp(decode, base64_tests[i][0]))
{
failures ++;
if (j)
{
puts("FAIL");
j = 1;
}
printf(" httpDecode64_2() returned \"%s\", expected \"%s\"...\n",
decode, base64_tests[i][0]);
}
if (strcmp(encode, base64_tests[i][1]))
{
failures ++;
if (j)
{
puts("FAIL");
j = 1;
}
printf(" httpEncode64_2() returned \"%s\", expected \"%s\"...\n",
encode, base64_tests[i][1]);
}
}
if (!j)
puts("PASS");
/*
* httpGetHostname()
*/
fputs("httpGetHostname(): ", stdout);
if (httpGetHostname(NULL, hostname, sizeof(hostname)))
printf("PASS (%s)\n", hostname);
else
{
failures ++;
puts("FAIL");
}
/*
* httpAddrGetList()
*/
printf("httpAddrGetList(%s): ", hostname);
addrlist = httpAddrGetList(hostname, AF_UNSPEC, NULL);
if (addrlist)
{
for (i = 0, addr = addrlist; addr; i ++, addr = addr->next)
{
char numeric[1024]; /* Numeric IP address */
httpAddrString(&(addr->addr), numeric, sizeof(numeric));
if (!strcmp(numeric, "UNKNOWN"))
break;
}
if (addr)
printf("FAIL (bad address for %s)\n", hostname);
else
printf("PASS (%d address(es) for %s)\n", i, hostname);
httpAddrFreeList(addrlist);
}
else if (isdigit(hostname[0] & 255))
{
puts("FAIL (ignored because hostname is numeric)");
}
else
{
failures ++;
puts("FAIL");
}
/*
* Test httpSeparateURI()...
*/
fputs("httpSeparateURI(): ", stdout);
for (i = 0, j = 0; i < (int)(sizeof(uri_tests) / sizeof(uri_tests[0])); i ++)
{
uri_status = httpSeparateURI(HTTP_URI_CODING_MOST,
uri_tests[i].uri, scheme, sizeof(scheme),
username, sizeof(username),
hostname, sizeof(hostname), &port,
resource, sizeof(resource));
if (uri_status != uri_tests[i].result ||
strcmp(scheme, uri_tests[i].scheme) ||
strcmp(username, uri_tests[i].username) ||
strcmp(hostname, uri_tests[i].hostname) ||
port != uri_tests[i].port ||
strcmp(resource, uri_tests[i].resource))
{
failures ++;
if (!j)
{
puts("FAIL");
j = 1;
}
printf(" \"%s\":\n", uri_tests[i].uri);
if (uri_status != uri_tests[i].result)
printf(" Returned %s instead of %s\n",
uri_status_strings[uri_status + 8],
uri_status_strings[uri_tests[i].result + 8]);
if (strcmp(scheme, uri_tests[i].scheme))
printf(" Scheme \"%s\" instead of \"%s\"\n",
scheme, uri_tests[i].scheme);
if (strcmp(username, uri_tests[i].username))
printf(" Username \"%s\" instead of \"%s\"\n",
username, uri_tests[i].username);
if (strcmp(hostname, uri_tests[i].hostname))
printf(" Hostname \"%s\" instead of \"%s\"\n",
hostname, uri_tests[i].hostname);
if (port != uri_tests[i].port)
printf(" Port %d instead of %d\n",
port, uri_tests[i].port);
if (strcmp(resource, uri_tests[i].resource))
printf(" Resource \"%s\" instead of \"%s\"\n",
resource, uri_tests[i].resource);
}
}
if (!j)
printf("PASS (%d URIs tested)\n",
(int)(sizeof(uri_tests) / sizeof(uri_tests[0])));
/*
* Test httpAssembleURI()...
*/
fputs("httpAssembleURI(): ", stdout);
for (i = 0, j = 0, k = 0;
i < (int)(sizeof(uri_tests) / sizeof(uri_tests[0]));
i ++)
if (uri_tests[i].result == HTTP_URI_STATUS_OK &&
!strstr(uri_tests[i].uri, "%64") &&
strstr(uri_tests[i].uri, "//"))
{
k ++;
uri_status = httpAssembleURI(uri_tests[i].assemble_coding,
buffer, sizeof(buffer),
uri_tests[i].scheme,
uri_tests[i].username,
uri_tests[i].hostname,
uri_tests[i].assemble_port,
uri_tests[i].resource);
if (uri_status != HTTP_URI_STATUS_OK)
{
failures ++;
if (!j)
{
puts("FAIL");
j = 1;
}
printf(" \"%s\": %s\n", uri_tests[i].uri,
uri_status_strings[uri_status + 8]);
}
else if (strcmp(buffer, uri_tests[i].uri))
{
failures ++;
if (!j)
{
puts("FAIL");
j = 1;
}
printf(" \"%s\": assembled = \"%s\"\n", uri_tests[i].uri,
buffer);
}
}
if (!j)
printf("PASS (%d URIs tested)\n", k);
/*
* httpAssembleUUID
*/
fputs("httpAssembleUUID: ", stdout);
httpAssembleUUID("hostname.example.com", 631, "printer", 12345, buffer,
sizeof(buffer));
if (strncmp(buffer, "urn:uuid:", 9))
{
printf("FAIL (%s)\n", buffer);
failures ++;
}
else
printf("PASS (%s)\n", buffer);
/*
* Show a summary and return...
*/
if (failures)
printf("\n%d TESTS FAILED!\n", failures);
else
puts("\nALL TESTS PASSED!");
return (failures);
}
else if (strstr(argv[1], "._tcp"))
{
/*
* Test resolving an mDNS name.
*/
char resolved[1024]; /* Resolved URI */
printf("_httpResolveURI(%s, _HTTP_RESOLVE_DEFAULT): ", argv[1]);
fflush(stdout);
if (!_httpResolveURI(argv[1], resolved, sizeof(resolved),
_HTTP_RESOLVE_DEFAULT, NULL, NULL))
{
puts("FAIL");
return (1);
}
else
printf("PASS (%s)\n", resolved);
printf("_httpResolveURI(%s, _HTTP_RESOLVE_FQDN): ", argv[1]);
fflush(stdout);
if (!_httpResolveURI(argv[1], resolved, sizeof(resolved),
_HTTP_RESOLVE_FQDN, NULL, NULL))
{
puts("FAIL");
return (1);
}
else if (strstr(resolved, ".local:"))
{
printf("FAIL (%s)\n", resolved);
return (1);
}
else
{
printf("PASS (%s)\n", resolved);
return (0);
}
}
else if (!strcmp(argv[1], "-u") && argc == 3)
{
/*
* Test URI separation...
*/
uri_status = httpSeparateURI(HTTP_URI_CODING_ALL, argv[2], scheme,
sizeof(scheme), username, sizeof(username),
hostname, sizeof(hostname), &port,
resource, sizeof(resource));
printf("uri_status = %s\n", uri_status_strings[uri_status + 8]);
printf("scheme = \"%s\"\n", scheme);
printf("username = \"%s\"\n", username);
printf("hostname = \"%s\"\n", hostname);
printf("port = %d\n", port);
printf("resource = \"%s\"\n", resource);
return (0);
}
/*
* Test HTTP GET requests...
*/
http = NULL;
out = stdout;
for (i = 1; i < argc; i ++)
{
if (!strcmp(argv[i], "-o"))
{
i ++;
if (i >= argc)
break;
out = fopen(argv[i], "wb");
continue;
}
httpSeparateURI(HTTP_URI_CODING_MOST, argv[i], scheme, sizeof(scheme),
username, sizeof(username),
hostname, sizeof(hostname), &port,
resource, sizeof(resource));
if (!_cups_strcasecmp(scheme, "https") || !_cups_strcasecmp(scheme, "ipps") ||
port == 443)
encryption = HTTP_ENCRYPTION_ALWAYS;
else
encryption = HTTP_ENCRYPTION_IF_REQUESTED;
http = httpConnect2(hostname, port, NULL, AF_UNSPEC, encryption, 1, 30000,
NULL);
if (http == NULL)
{
perror(hostname);
continue;
}
printf("Checking file \"%s\"...\n", resource);
do
{
if (!_cups_strcasecmp(httpGetField(http, HTTP_FIELD_CONNECTION), "close"))
{
httpClearFields(http);
if (httpReconnect2(http, 30000, NULL))
{
status = HTTP_STATUS_ERROR;
break;
}
}
httpClearFields(http);
httpSetField(http, HTTP_FIELD_AUTHORIZATION, httpGetAuthString(http));
httpSetField(http, HTTP_FIELD_ACCEPT_LANGUAGE, "en");
if (httpHead(http, resource))
{
if (httpReconnect2(http, 30000, NULL))
{
status = HTTP_STATUS_ERROR;
break;
}
else
{
status = HTTP_STATUS_UNAUTHORIZED;
continue;
}
}
while ((status = httpUpdate(http)) == HTTP_STATUS_CONTINUE);
if (status == HTTP_STATUS_UNAUTHORIZED)
{
/*
* Flush any error message...
*/
httpFlush(http);
/*
* See if we can do authentication...
*/
if (cupsDoAuthentication(http, "GET", resource))
{
status = HTTP_STATUS_CUPS_AUTHORIZATION_CANCELED;
break;
}
if (httpReconnect2(http, 30000, NULL))
{
status = HTTP_STATUS_ERROR;
break;
}
continue;
}
#ifdef HAVE_SSL
else if (status == HTTP_STATUS_UPGRADE_REQUIRED)
{
/* Flush any error message... */
httpFlush(http);
/* Reconnect... */
if (httpReconnect2(http, 30000, NULL))
{
status = HTTP_STATUS_ERROR;
break;
}
/* Upgrade with encryption... */
httpEncryption(http, HTTP_ENCRYPTION_REQUIRED);
/* Try again, this time with encryption enabled... */
continue;
}
#endif /* HAVE_SSL */
}
while (status == HTTP_STATUS_UNAUTHORIZED ||
status == HTTP_STATUS_UPGRADE_REQUIRED);
if (status == HTTP_STATUS_OK)
puts("HEAD OK:");
else
printf("HEAD failed with status %d...\n", status);
encoding = httpGetContentEncoding(http);
printf("Requesting file \"%s\" (Accept-Encoding: %s)...\n", resource,
encoding ? encoding : "identity");
do
{
if (!_cups_strcasecmp(httpGetField(http, HTTP_FIELD_CONNECTION), "close"))
{
httpClearFields(http);
if (httpReconnect2(http, 30000, NULL))
{
status = HTTP_STATUS_ERROR;
break;
}
}
httpClearFields(http);
httpSetField(http, HTTP_FIELD_AUTHORIZATION, httpGetAuthString(http));
httpSetField(http, HTTP_FIELD_ACCEPT_LANGUAGE, "en");
httpSetField(http, HTTP_FIELD_ACCEPT_ENCODING, encoding);
if (httpGet(http, resource))
{
if (httpReconnect2(http, 30000, NULL))
{
status = HTTP_STATUS_ERROR;
break;
}
else
{
status = HTTP_STATUS_UNAUTHORIZED;
continue;
}
}
while ((status = httpUpdate(http)) == HTTP_STATUS_CONTINUE);
if (status == HTTP_STATUS_UNAUTHORIZED)
{
/*
* Flush any error message...
*/
httpFlush(http);
/*
* See if we can do authentication...
*/
if (cupsDoAuthentication(http, "GET", resource))
{
status = HTTP_STATUS_CUPS_AUTHORIZATION_CANCELED;
break;
}
if (httpReconnect2(http, 30000, NULL))
{
status = HTTP_STATUS_ERROR;
break;
}
continue;
}
#ifdef HAVE_SSL
else if (status == HTTP_STATUS_UPGRADE_REQUIRED)
{
/* Flush any error message... */
httpFlush(http);
/* Reconnect... */
if (httpReconnect2(http, 30000, NULL))
{
status = HTTP_STATUS_ERROR;
break;
}
/* Upgrade with encryption... */
httpEncryption(http, HTTP_ENCRYPTION_REQUIRED);
/* Try again, this time with encryption enabled... */
continue;
}
#endif /* HAVE_SSL */
}
while (status == HTTP_STATUS_UNAUTHORIZED || status == HTTP_STATUS_UPGRADE_REQUIRED);
if (status == HTTP_STATUS_OK)
puts("GET OK:");
else
printf("GET failed with status %d...\n", status);
start = time(NULL);
length = httpGetLength2(http);
total = 0;
while ((bytes = httpRead2(http, buffer, sizeof(buffer))) > 0)
{
total += bytes;
fwrite(buffer, bytes, 1, out);
if (out != stdout)
{
current = time(NULL);
if (current == start) current ++;
printf("\r" CUPS_LLFMT "/" CUPS_LLFMT " bytes ("
CUPS_LLFMT " bytes/sec) ", CUPS_LLCAST total,
CUPS_LLCAST length, CUPS_LLCAST (total / (current - start)));
fflush(stdout);
}
}
}
puts("Closing connection to server...");
httpClose(http);
if (out != stdout)
fclose(out);
return (0);
}
static int /* O - 1 on success, 0 on failure */
cups_get_printer_uri(
http_t *http, /* I - Connection to server */
const char *name, /* I - Name of printer or class */
char *host, /* I - Hostname buffer */
int hostsize, /* I - Size of hostname buffer */
int *port, /* O - Port number */
char *resource, /* I - Resource buffer */
int resourcesize, /* I - Size of resource buffer */
int depth) /* I - Depth of query */
{
int i; /* Looping var */
int http_port; /* Port number */
http_t *http2; /* Alternate HTTP connection */
ipp_t *request, /* IPP request */
*response; /* IPP response */
ipp_attribute_t *attr; /* Current attribute */
char uri[HTTP_MAX_URI], /* printer-uri attribute */
scheme[HTTP_MAX_URI], /* Scheme name */
username[HTTP_MAX_URI], /* Username:password */
classname[255], /* Temporary class name */
http_hostname[HTTP_MAX_HOST];
/* Hostname associated with connection */
static const char * const requested_attrs[] =
{ /* Requested attributes */
"member-uris",
"printer-uri-supported",
"printer-type"
};
DEBUG_printf(("7cups_get_printer_uri(http=%p, name=\"%s\", host=%p, "
"hostsize=%d, resource=%p, resourcesize=%d, depth=%d)",
http, name, host, hostsize, resource, resourcesize, depth));
/*
* Setup the printer URI...
*/
if (httpAssembleURIf(HTTP_URI_CODING_ALL, uri, sizeof(uri), "ipp", NULL,
"localhost", 0, "/printers/%s", name) != HTTP_URI_OK)
{
_cupsSetError(IPP_INTERNAL_ERROR, _("Unable to create printer-uri"), 1);
*host = '\0';
*resource = '\0';
return (0);
}
DEBUG_printf(("9cups_get_printer_uri: printer-uri=\"%s\"", uri));
/*
* Get the hostname and port number we are connected to...
*/
httpGetHostname(http, http_hostname, sizeof(http_hostname));
http_port = _httpAddrPort(http->hostaddr);
/*
* Build an IPP_GET_PRINTER_ATTRIBUTES request, which requires the following
* attributes:
*
* attributes-charset
* attributes-natural-language
* printer-uri
* requested-attributes
*/
request = ippNewRequest(IPP_GET_PRINTER_ATTRIBUTES);
ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI, "printer-uri",
NULL, uri);
ippAddStrings(request, IPP_TAG_OPERATION, IPP_TAG_NAME,
"requested-attributes",
sizeof(requested_attrs) / sizeof(requested_attrs[0]),
NULL, requested_attrs);
/*
* Do the request and get back a response...
*/
if ((response = cupsDoRequest(http, request, "/")) != NULL)
{
if ((attr = ippFindAttribute(response, "member-uris", IPP_TAG_URI)) != NULL)
{
/*
* Get the first actual printer name in the class...
*/
for (i = 0; i < attr->num_values; i ++)
{
httpSeparateURI(HTTP_URI_CODING_ALL, attr->values[i].string.text,
scheme, sizeof(scheme), username, sizeof(username),
host, hostsize, port, resource, resourcesize);
if (!strncmp(resource, "/printers/", 10))
{
/*
* Found a printer!
*/
ippDelete(response);
return (1);
}
}
/*
* No printers in this class - try recursively looking for a printer,
* but not more than 3 levels deep...
*/
if (depth < 3)
{
for (i = 0; i < attr->num_values; i ++)
{
httpSeparateURI(HTTP_URI_CODING_ALL, attr->values[i].string.text,
scheme, sizeof(scheme), username, sizeof(username),
host, hostsize, port, resource, resourcesize);
if (!strncmp(resource, "/classes/", 9))
{
/*
* Found a class! Connect to the right server...
*/
if (!_cups_strcasecmp(http_hostname, host) && *port == http_port)
http2 = http;
else if ((http2 = httpConnectEncrypt(host, *port,
cupsEncryption())) == NULL)
{
DEBUG_puts("8cups_get_printer_uri: Unable to connect to server");
continue;
}
/*
* Look up printers on that server...
*/
strlcpy(classname, resource + 9, sizeof(classname));
cups_get_printer_uri(http2, classname, host, hostsize, port,
resource, resourcesize, depth + 1);
/*
* Close the connection as needed...
*/
if (http2 != http)
httpClose(http2);
if (*host)
return (1);
}
}
}
}
else if ((attr = ippFindAttribute(response, "printer-uri-supported",
IPP_TAG_URI)) != NULL)
{
httpSeparateURI(HTTP_URI_CODING_ALL,
_httpResolveURI(attr->values[0].string.text, uri,
sizeof(uri), _HTTP_RESOLVE_DEFAULT,
NULL, NULL),
scheme, sizeof(scheme), username, sizeof(username),
host, hostsize, port, resource, resourcesize);
ippDelete(response);
if (!strncmp(resource, "/classes/", 9))
{
_cupsSetError(IPP_INTERNAL_ERROR,
_("No printer-uri found for class"), 1);
*host = '\0';
*resource = '\0';
return (0);
}
return (1);
}
ippDelete(response);
}
if (cupsLastError() != IPP_NOT_FOUND)
_cupsSetError(IPP_INTERNAL_ERROR, _("No printer-uri found"), 1);
*host = '\0';
*resource = '\0';
return (0);
}
static char * /* O - Filename or NULL */
get_printer_ppd(const char *uri, /* I - Printer URI */
char *buffer, /* I - Filename buffer */
size_t bufsize) /* I - Size of filename buffer */
{
http_t *http; /* Connection to printer */
ipp_t *request, /* Get-Printer-Attributes request */
*response; /* Get-Printer-Attributes response */
char resolved[1024], /* Resolved URI */
scheme[32], /* URI scheme */
userpass[256], /* Username:password */
host[256], /* Hostname */
resource[256]; /* Resource path */
int port; /* Port number */
/*
* Connect to the printer...
*/
if (strstr(uri, "._tcp"))
{
/*
* Resolve URI...
*/
if (!_httpResolveURI(uri, resolved, sizeof(resolved), _HTTP_RESOLVE_DEFAULT, NULL, NULL))
{
_cupsLangPrintf(stderr, _("%s: Unable to resolve \"%s\"."), "lpadmin", uri);
return (NULL);
}
uri = resolved;
}
if (httpSeparateURI(HTTP_URI_CODING_ALL, uri, scheme, sizeof(scheme), userpass, sizeof(userpass), host, sizeof(host), &port, resource, sizeof(resource)) < HTTP_URI_STATUS_OK)
{
_cupsLangPrintf(stderr, _("%s: Bad printer URI \"%s\"."), "lpadmin", uri);
return (NULL);
}
http = httpConnect2(host, port, NULL, AF_UNSPEC, !strcmp(scheme, "ipps") ? HTTP_ENCRYPTION_ALWAYS : HTTP_ENCRYPTION_IF_REQUESTED, 1, 30000, NULL);
if (!http)
{
_cupsLangPrintf(stderr, _("%s: Unable to connect to \"%s:%d\": %s"), "lpadmin", host, port, cupsLastErrorString());
return (NULL);
}
/*
* Send a Get-Printer-Attributes request...
*/
request = ippNewRequest(IPP_OP_GET_PRINTER_ATTRIBUTES);
ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI, "printer-uri", NULL, uri);
response = cupsDoRequest(http, request, resource);
if (!_ppdCreateFromIPP(buffer, bufsize, response))
_cupsLangPrintf(stderr, _("%s: Unable to create PPD file: %s"), "lpadmin", strerror(errno));
ippDelete(response);
httpClose(http);
if (buffer[0])
return (buffer);
else
return (NULL);
}
