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cups.19091
0001-Update-cupsEnumDests-implementation-to-ret...
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File 0001-Update-cupsEnumDests-implementation-to-return-early-if-all.patch of Package cups.19091
From a2187a63425a3d6c05de1e1cbf8c26fd39a1aced Mon Sep 17 00:00:00 2001 From: Michael R Sweet <michaelrsweet@gmail.com> Date: Wed, 19 Apr 2017 15:29:42 -0400 Subject: [PATCH] Update cupsEnumDests implementation to return early if all printers have been discovered (Issue #4989) Also update the code to generate the same queue names as cupsd does for IPP Everywhere printers. --- CHANGES.txt | 4 +- cups/dest.c | 169 +++++++++++++++++++++++++++++++++++++++++++------------- cups/testdest.c | 4 +- 3 files changed, 136 insertions(+), 41 deletions(-) diff --git a/cups/dest.c b/cups/dest.c index b06a9ee..54f2a7f 100644 --- a/cups/dest.c +++ b/cups/dest.c @@ -101,9 +101,10 @@ typedef struct _cups_dnssd_device_s /* Enumerated device */ # else /* HAVE_AVAHI */ AvahiRecordBrowser *ref; /* Browser for query */ # endif /* HAVE_DNSSD */ - char *domain, /* Domain name */ - *fullName, /* Full name */ - *regtype; /* Registration type */ + char *fullName, /* Full name */ +// *serviceName, /* Service name */ + *regtype, /* Registration type */ + *domain; /* Domain name */ cups_ptype_t type; /* Device registration type */ cups_dest_t dest; /* Destination record */ } _cups_dnssd_device_t; @@ -202,6 +203,7 @@ static void cups_dnssd_query_cb(AvahiRecordBrowser *browser, AvahiLookupResultFlags flags, void *context); # endif /* HAVE_DNSSD */ +static void cups_dnssd_queue_name(char *name, const char *serviceName, size_t namesize); static const char *cups_dnssd_resolve(cups_dest_t *dest, const char *uri, int msec, int *cancel, cups_dest_cb_t cb, void *user_data); @@ -920,14 +922,13 @@ _cupsCreateDest(const char *name, /* I - Printer name */ int /* O - 1 on success, 0 on failure */ cupsEnumDests( - unsigned flags, /* I - Enumeration flags */ - int msec, /* I - Timeout in milliseconds, - * -1 for indefinite */ - int *cancel, /* I - Pointer to "cancel" variable */ - cups_ptype_t type, /* I - Printer type bits */ - cups_ptype_t mask, /* I - Mask for printer type bits */ - cups_dest_cb_t cb, /* I - Callback function */ - void *user_data) /* I - User data */ + unsigned flags, /* I - Enumeration flags */ + int msec, /* I - Timeout in milliseconds, -1 for indefinite */ + int *cancel, /* I - Pointer to "cancel" variable */ + cups_ptype_t type, /* I - Printer type bits */ + cups_ptype_t mask, /* I - Mask for printer type bits */ + cups_dest_cb_t cb, /* I - Callback function */ + void *user_data) /* I - User data */ { int i, /* Looping var */ num_dests; /* Number of destinations */ @@ -939,6 +940,7 @@ cupsEnumDests( *user_default; /* User default printer */ #if defined(HAVE_DNSSD) || defined(HAVE_AVAHI) int count, /* Number of queries started */ + completed, /* Number of completed queries */ remaining; /* Remainder of timeout */ _cups_dnssd_data_t data; /* Data for callback */ _cups_dnssd_device_t *device; /* Current device */ @@ -1007,29 +1009,70 @@ cupsEnumDests( dest->is_default = 1; } +#if defined(HAVE_DNSSD) || defined(HAVE_AVAHI) + data.type = type; + data.mask = mask; + data.cb = cb; + data.user_data = user_data; + data.devices = cupsArrayNew3((cups_array_func_t)cups_dnssd_compare_devices, NULL, NULL, 0, NULL, (cups_afree_func_t)cups_dnssd_free_device); +#endif /* HAVE_DNSSD || HAVE_AVAHI */ + for (i = num_dests, dest = dests; i > 0 && (!cancel || !*cancel); i --, dest ++) + { + const char *device_uri; /* Device URI */ + if (!(*cb)(user_data, i > 1 ? CUPS_DEST_FLAGS_MORE : CUPS_DEST_FLAGS_NONE, dest)) break; + if (!dest->instance && (device_uri = cupsGetOption("device-uri", dest->num_options, dest->options)) != NULL && !strncmp(device_uri, "dnssd://", 8)) + { + /* + * Add existing queue using service name, etc. so we don't list it again... + */ + + char scheme[32], /* URI scheme */ + userpass[32], /* Username:password */ + serviceName[256], /* Service name (host field) */ + resource[256], /* Resource (options) */ + *regtype, /* Registration type */ + *replyDomain; /* Registration domain */ + int port; /* Port number (not used) */ + + if (httpSeparateURI(HTTP_URI_CODING_ALL, device_uri, scheme, sizeof(scheme), userpass, sizeof(userpass), serviceName, sizeof(serviceName), &port, resource, sizeof(resource)) >= HTTP_URI_STATUS_OK) + { + if ((regtype = strstr(serviceName, "._ipp")) != NULL) + { + *regtype++ = '\0'; + + if ((replyDomain = strstr(regtype, "._tcp.")) != NULL) + { + replyDomain[5] = '\0'; + replyDomain += 6; + + if ((device = cups_dnssd_get_device(&data, serviceName, regtype, replyDomain)) != NULL) + device->state = _CUPS_DNSSD_ACTIVE; + } + } + } + } + } + cupsFreeDests(num_dests, dests); if (i > 0 || msec == 0) + { + cupsArrayDelete(data.devices); return (1); + } #if defined(HAVE_DNSSD) || defined(HAVE_AVAHI) /* * Get Bonjour-shared printers... */ - data.type = type; - data.mask = mask; - data.cb = cb; - data.user_data = user_data; - data.devices = cupsArrayNew3((cups_array_func_t)cups_dnssd_compare_devices, NULL, NULL, 0, NULL, (cups_afree_func_t)cups_dnssd_free_device); - # ifdef HAVE_DNSSD if (DNSServiceCreateConnection(&data.main_ref) != kDNSServiceErr_NoError) return (0); @@ -1105,27 +1148,25 @@ cupsEnumDests( pfd.fd = main_fd; pfd.events = POLLIN; - nfds = poll(&pfd, 1, remaining > 250 ? 250 : remaining); + nfds = poll(&pfd, 1, remaining > 500 ? 500 : remaining); # else FD_ZERO(&input); FD_SET(main_fd, &input); timeout.tv_sec = 0; - timeout.tv_usec = remaining > 250 ? 250000 : remaining * 1000; + timeout.tv_usec = remaining > 500 ? 500000 : remaining * 1000; nfds = select(main_fd + 1, &input, NULL, NULL, &timeout); # endif /* HAVE_POLL */ if (nfds > 0) DNSServiceProcessResult(data.main_ref); - else if (nfds == 0) - remaining -= 250; # else /* HAVE_AVAHI */ data.got_data = 0; - if ((error = avahi_simple_poll_iterate(data.simple_poll, 250)) > 0) + if ((error = avahi_simple_poll_iterate(data.simple_poll, 500)) > 0) { /* * We've been told to exit the loop. Perhaps the connection to @@ -1135,18 +1176,21 @@ cupsEnumDests( break; } - if (!data.got_data) - remaining -= 250; # endif /* HAVE_DNSSD */ + remaining -= 500; + for (device = (_cups_dnssd_device_t *)cupsArrayFirst(data.devices), - count = 0; + count = 0, completed = 0; device; device = (_cups_dnssd_device_t *)cupsArrayNext(data.devices)) { if (device->ref) count ++; + if (device->state == _CUPS_DNSSD_ACTIVE) + completed ++; + if (!device->ref && device->state == _CUPS_DNSSD_NEW) { DEBUG_printf(("1cupsEnumDests: Querying '%s'.", device->fullName)); @@ -1196,8 +1240,11 @@ cupsEnumDests( } else if (device->ref && device->state == _CUPS_DNSSD_PENDING) { + completed ++; + if ((device->type & mask) == type) { + DEBUG_printf(("1cupsEnumDests: Add callback for \"%s\".", device->dest.name)); if (!(*cb)(user_data, CUPS_DEST_FLAGS_NONE, &device->dest)) { remaining = -1; @@ -1208,6 +1255,9 @@ cupsEnumDests( device->state = _CUPS_DNSSD_ACTIVE; } } + + if (completed == cupsArrayCount(data.devices)) + break; } cupsArrayDelete(data.devices); @@ -2964,8 +3014,9 @@ cups_dnssd_get_device( { _cups_dnssd_device_t key, /* Search key */ *device; /* Device */ - char fullName[kDNSServiceMaxDomainName]; + char fullName[kDNSServiceMaxDomainName], /* Full name for query */ + name[128]; /* Queue name */ DEBUG_printf(("5cups_dnssd_get_device(data=%p, serviceName=\"%s\", " @@ -2974,7 +3025,9 @@ cups_dnssd_get_device( * See if this is an existing device... */ - key.dest.name = (char *)serviceName; + cups_dnssd_queue_name(name, serviceName, sizeof(name)); + + key.dest.name = name; if ((device = cupsArrayFind(data->devices, &key)) != NULL) { @@ -3035,10 +3088,12 @@ cups_dnssd_get_device( replyDomain)); device = calloc(sizeof(_cups_dnssd_device_t), 1); - device->dest.name = _cupsStrAlloc(serviceName); + device->dest.name = _cupsStrAlloc(name); device->domain = _cupsStrAlloc(replyDomain); device->regtype = _cupsStrAlloc(regtype); + device->dest.num_options = cupsAddOption("printer-info", serviceName, 0, &device->dest.options); + cupsArrayAdd(data->devices, device); } @@ -3047,11 +3102,9 @@ cups_dnssd_get_device( */ # ifdef HAVE_DNSSD - DNSServiceConstructFullName(fullName, device->dest.name, device->regtype, - device->domain); + DNSServiceConstructFullName(fullName, serviceName, regtype, replyDomain); # else /* HAVE_AVAHI */ - avahi_service_name_join(fullName, kDNSServiceMaxDomainName, serviceName, - regtype, replyDomain); + avahi_service_name_join(fullName, kDNSServiceMaxDomainName, serviceName, regtype, replyDomain); # endif /* HAVE_DNSSD */ _cupsStrFree(device->fullName); @@ -3070,6 +3123,8 @@ cups_dnssd_get_device( if (device->state == _CUPS_DNSSD_ACTIVE) { + DEBUG_printf(("6cups_dnssd_get_device: Remove callback for \"%s\".", device->dest.name)); + (*data->cb)(data->user_data, CUPS_DEST_FLAGS_REMOVED, &device->dest); device->state = _CUPS_DNSSD_NEW; } @@ -3128,7 +3183,10 @@ cups_dnssd_local_cb( } if (device->state == _CUPS_DNSSD_ACTIVE) + { + DEBUG_printf(("6cups_dnssd_local_cb: Remove callback for \"%s\".", device->dest.name)); (*data->cb)(data->user_data, CUPS_DEST_FLAGS_REMOVED, &device->dest); + } device->state = _CUPS_DNSSD_LOCAL; } @@ -3214,7 +3272,8 @@ cups_dnssd_query_cb( # endif /* HAVE_DNSSD */ _cups_dnssd_data_t *data = (_cups_dnssd_data_t *)context; /* Enumeration data */ - char name[1024], /* Service name */ + char serviceName[256],/* Service name */ + name[128], /* Queue name */ *ptr; /* Pointer into string */ _cups_dnssd_device_t dkey, /* Search key */ *device; /* Device */ @@ -3255,14 +3314,16 @@ cups_dnssd_query_cb( * Lookup the service in the devices array. */ - dkey.dest.name = name; - - cups_dnssd_unquote(name, fullName, sizeof(name)); + cups_dnssd_unquote(serviceName, fullName, sizeof(serviceName)); - if ((ptr = strstr(name, "._")) != NULL) + if ((ptr = strstr(serviceName, "._")) != NULL) *ptr = '\0'; - if ((device = cupsArrayFind(data->devices, &dkey)) != NULL) + cups_dnssd_queue_name(name, serviceName, sizeof(name)); + + dkey.dest.name = name; + + if ((device = cupsArrayFind(data->devices, &dkey)) != NULL && device->state == _CUPS_DNSSD_NEW) { /* * Found it, pull out the make and model from the TXT record and save it... @@ -3620,6 +3681,38 @@ cups_dnssd_unquote(char *dst, /* I - Destination buffer */ #endif /* HAVE_DNSSD */ +#if defined(HAVE_DNSSD) || defined(HAVE_AVAHI) +/* + * 'cups_dnssd_queue_name()' - Create a local queue name based on the service name. + */ + +static void +cups_dnssd_queue_name( + char *name, /* I - Name buffer */ + const char *serviceName, /* I - Service name */ + size_t namesize) /* I - Size of name buffer */ +{ + const char *ptr; /* Pointer into serviceName */ + char *nameptr; /* Pointer into name */ + + + for (nameptr = name, ptr = serviceName; *ptr && nameptr < (name + namesize - 1); ptr ++) + { + /* + * Sanitize the printer name... + */ + + if (_cups_isalnum(*ptr)) + *nameptr++ = *ptr; + else if (nameptr == name || nameptr[-1] != '_') + *nameptr++ = '_'; + } + + *nameptr = '\0'; +} +#endif /* HAVE_DNSSD || HAVE_AVAHI */ + + /* * 'cups_find_dest()' - Find a destination using a binary search. */
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