/*
- * "$Id: http-support.c 6649 2007-07-11 21:46:42Z mike $"
+ * "$Id: http-support.c 7583 2008-05-16 17:47:16Z mike $"
*
* HTTP support routines for the Common UNIX Printing System (CUPS) scheduler.
*
* _cups_hstrerror() - hstrerror() emulation function for Solaris and
* others...
* _httpEncodeURI() - Percent-encode a HTTP request URI.
+ * _httpResolveURI() - Resolve a DNS-SD URI.
* http_copy_decode() - Copy and decode a URI.
* http_copy_encode() - Copy and encode a URI.
+ * resolve_callback() - Build a device URI for the given service name.
*/
/*
#include "debug.h"
#include "globals.h"
#include <stdlib.h>
+#ifdef HAVE_DNSSD
+# include <dns_sd.h>
+#endif /* HAVE_DNSSD */
+
+
+/*
+ * Local types...
+ */
+
+typedef struct _http_uribuf_s /* URI buffer */
+{
+ char *buffer; /* Pointer to buffer */
+ size_t bufsize; /* Size of buffer */
+} _http_uribuf_t;
/*
static char *http_copy_encode(char *dst, const char *src,
char *dstend, const char *reserved,
const char *term, int encode);
+#ifdef HAVE_DNSSD
+static void resolve_callback(DNSServiceRef sdRef,
+ DNSServiceFlags flags,
+ uint32_t interfaceIndex,
+ DNSServiceErrorType errorCode,
+ const char *fullName,
+ const char *hostTarget,
+ uint16_t port, uint16_t txtLen,
+ const unsigned char *txtRecord,
+ void *context);
+#endif /* HAVE_DNSSD */
/*
}
+/*
+ * '_httpResolveURI()' - Resolve a DNS-SD URI.
+ */
+
+const char * /* O - Resolved URI */
+_httpResolveURI(
+ const char *uri, /* I - DNS-SD URI */
+ char *resolved_uri, /* I - Buffer for resolved URI */
+ size_t resolved_size) /* I - Size of URI buffer */
+{
+ char scheme[32], /* URI components... */
+ userpass[256],
+ hostname[1024],
+ resource[1024];
+ int port;
+
+
+ /*
+ * Get the device URI...
+ */
+
+ if (httpSeparateURI(HTTP_URI_CODING_ALL, uri, scheme, sizeof(scheme),
+ userpass, sizeof(userpass), hostname, sizeof(hostname),
+ &port, resource, sizeof(resource)) < HTTP_URI_OK)
+ return (NULL);
+
+ /*
+ * Resolve it as needed...
+ */
+
+ if (strstr(hostname, "._tcp"))
+ {
+#ifdef HAVE_DNSSD
+ DNSServiceRef ref; /* DNS-SD service reference */
+ char *regtype, /* Pointer to type in hostname */
+ *domain; /* Pointer to domain in hostname */
+ _http_uribuf_t uribuf; /* URI buffer */
+
+ /*
+ * Separate the hostname into service name, registration type, and domain...
+ */
+
+ regtype = strchr(hostname, '.');
+ *regtype++ = '\0';
+
+ domain = regtype + strlen(regtype) - 1;
+ if (domain > regtype && *domain == '.')
+ *domain = '\0';
+
+ for (domain = strchr(regtype, '.');
+ domain;
+ domain = strchr(domain + 1, '.'))
+ if (domain[1] != '_')
+ break;
+
+ if (domain)
+ *domain++ = '\0';
+
+ uribuf.buffer = resolved_uri;
+ uribuf.bufsize = resolved_size;
+
+ resolved_uri[0] = '\0';
+
+ if (DNSServiceResolve(&ref, 0, 0, hostname, regtype, domain,
+ resolve_callback,
+ &uribuf) == kDNSServiceErr_NoError)
+ {
+ if (DNSServiceProcessResult(ref) != kDNSServiceErr_NoError &&
+ resolved_uri[0])
+ uri = NULL;
+ else
+ uri = resolved_uri;
+
+ DNSServiceRefDeallocate(ref);
+ }
+ else
+#endif /* HAVE_DNSSD */
+
+ uri = NULL;
+ }
+
+ return (uri);
+}
+
+
/*
* 'http_copy_decode()' - Copy and decode a URI.
*/
}
+#ifdef HAVE_DNSSD
+/*
+ * 'resolve_callback()' - Build a device URI for the given service name.
+ */
+
+static void
+resolve_callback(
+ DNSServiceRef sdRef, /* I - Service reference */
+ DNSServiceFlags flags, /* I - Results flags */
+ uint32_t interfaceIndex, /* I - Interface number */
+ DNSServiceErrorType errorCode, /* I - Error, if any */
+ const char *fullName, /* I - Full service name */
+ const char *hostTarget, /* I - Hostname */
+ uint16_t port, /* I - Port number */
+ uint16_t txtLen, /* I - Length of TXT record */
+ const unsigned char *txtRecord, /* I - TXT record data */
+ void *context) /* I - Pointer to URI buffer */
+{
+ const char *scheme; /* URI scheme */
+ char rp[257]; /* Remote printer */
+ const void *value; /* Value from TXT record */
+ uint8_t valueLen; /* Length of value */
+ _http_uribuf_t *uribuf; /* URI buffer */
+
+
+ DEBUG_printf(("resolve_callback(sdRef=%p, flags=%x, interfaceIndex=%u, "
+ "errorCode=%d, fullName=\"%s\", hostTarget=\"%s\", port=%u, "
+ "txtLen=%u, txtRecord=%p, context=%p)\n", sdRef, flags,
+ interfaceIndex, errorCode, fullName, hostTarget, port, txtLen,
+ txtRecord, context));
+
+ /*
+ * Figure out the scheme from the full name...
+ */
+
+ if (strstr(fullName, "._ipp"))
+ scheme = "ipp";
+ else if (strstr(fullName, "._printer."))
+ scheme = "lpd";
+ else if (strstr(fullName, "._pdl-datastream."))
+ scheme = "socket";
+ else
+ scheme = "riousbprint";
+
+ /*
+ * Extract the "remote printer" key from the TXT record...
+ */
+
+ if ((value = TXTRecordGetValuePtr(txtLen, txtRecord, "rp",
+ &valueLen)) != NULL)
+ {
+ /*
+ * Convert to resource by concatenating with a leading "/"...
+ */
+
+ rp[0] = '/';
+ memcpy(rp + 1, value, valueLen);
+ rp[valueLen + 1] = '\0';
+ }
+ else
+ rp[0] = '\0';
+
+ /*
+ * Assemble the final device URI...
+ */
+
+ uribuf = (_http_uribuf_t *)context;
+
+ httpAssembleURI(HTTP_URI_CODING_ALL, uribuf->buffer, uribuf->bufsize, scheme,
+ NULL, hostTarget, ntohs(port), rp);
+
+ DEBUG_printf(("resolve_callback: Resolved URI is \"%s\"...\n",
+ uribuf->buffer));
+}
+#endif /* HAVE_DNSSD */
+
+
/*
- * End of "$Id: http-support.c 6649 2007-07-11 21:46:42Z mike $".
+ * End of "$Id: http-support.c 7583 2008-05-16 17:47:16Z mike $".
*/
projects / thirdparty / cups.git / blobdiff