// SPDX-License-Identifier: GPL-2.0 #ifdef __clang__ // Clang has a bug on zero-initialization of C structs. #pragma clang diagnostic ignored "-Wmissing-field-initializers" #endif #include "ssrf.h" #include #include #include #include #include #include #include #include #include "gettext.h" #include "divesite.h" #include "subsurface-string.h" #include "device.h" #include "divelist.h" #include "display.h" #include "sha1.h" #include #include #include #include #include "libdivecomputer.h" #include "core/version.h" #include "core/qthelper.h" #include "core/membuffer.h" #include "core/file.h" #include char *dumpfile_name; char *logfile_name; const char *progress_bar_text = ""; void (*progress_callback)(const char *text) = NULL; double progress_bar_fraction = 0.0; static int stoptime, stopdepth, ndl, po2, cns, heartbeat, bearing; static bool in_deco, first_temp_is_air; static int current_gas_index; /* logging bits from libdivecomputer */ #ifndef __ANDROID__ #define INFO(context, fmt, ...) fprintf(stderr, "INFO: " fmt "\n", ##__VA_ARGS__) #define ERROR(context, fmt, ...) fprintf(stderr, "ERROR: " fmt "\n", ##__VA_ARGS__) #else #include #define INFO(context, fmt, ...) __android_log_print(ANDROID_LOG_DEBUG, __FILE__, "INFO: " fmt "\n", ##__VA_ARGS__) #define ERROR(context, fmt, ...) __android_log_print(ANDROID_LOG_DEBUG, __FILE__, "ERROR: " fmt "\n", ##__VA_ARGS__) #endif /* * Directly taken from libdivecomputer's examples/common.c to improve * the error messages resulting from libdc's return codes */ const char *errmsg (dc_status_t rc) { switch (rc) { case DC_STATUS_SUCCESS: return "Success"; case DC_STATUS_UNSUPPORTED: return "Unsupported operation"; case DC_STATUS_INVALIDARGS: return "Invalid arguments"; case DC_STATUS_NOMEMORY: return "Out of memory"; case DC_STATUS_NODEVICE: return "No device found"; case DC_STATUS_NOACCESS: return "Access denied"; case DC_STATUS_IO: return "Input/output error"; case DC_STATUS_TIMEOUT: return "Timeout"; case DC_STATUS_PROTOCOL: return "Protocol error"; case DC_STATUS_DATAFORMAT: return "Data format error"; case DC_STATUS_CANCELLED: return "Cancelled"; default: return "Unknown error"; } } static dc_status_t create_parser(device_data_t *devdata, dc_parser_t **parser) { return dc_parser_new(parser, devdata->device); } static int parse_gasmixes(device_data_t *devdata, struct dive *dive, dc_parser_t *parser, unsigned int ngases) { static bool shown_warning = false; unsigned int i; int rc; unsigned int ntanks = 0; rc = dc_parser_get_field(parser, DC_FIELD_TANK_COUNT, 0, &ntanks); if (rc == DC_STATUS_SUCCESS) { if (ntanks && ntanks < ngases) { shown_warning = true; report_error("Warning: different number of gases (%d) and cylinders (%d)", ngases, ntanks); } else if (ntanks > ngases) { shown_warning = true; report_error("Warning: smaller number of gases (%d) than cylinders (%d). Assuming air.", ngases, ntanks); } } bool no_volume = true; for (i = 0; i < MAX_CYLINDERS && (i < ngases || i < ntanks); i++) { if (i < ngases) { dc_gasmix_t gasmix = { 0 }; int o2, he; rc = dc_parser_get_field(parser, DC_FIELD_GASMIX, i, &gasmix); if (rc != DC_STATUS_SUCCESS && rc != DC_STATUS_UNSUPPORTED) return rc; o2 = lrint(gasmix.oxygen * 1000); he = lrint(gasmix.helium * 1000); /* Ignore bogus data - libdivecomputer does some crazy stuff */ if (o2 + he <= O2_IN_AIR || o2 > 1000) { if (!shown_warning) { shown_warning = true; report_error("unlikely dive gas data from libdivecomputer: o2 = %d he = %d", o2, he); } o2 = 0; } if (he < 0 || o2 + he > 1000) { if (!shown_warning) { shown_warning = true; report_error("unlikely dive gas data from libdivecomputer: o2 = %d he = %d", o2, he); } he = 0; } dive->cylinder[i].gasmix.o2.permille = o2; dive->cylinder[i].gasmix.he.permille = he; } else { dive->cylinder[i].gasmix.o2.permille = 0; dive->cylinder[i].gasmix.he.permille = 0; } if (i < ntanks) { dc_tank_t tank = { 0 }; rc = dc_parser_get_field(parser, DC_FIELD_TANK, i, &tank); if (rc == DC_STATUS_SUCCESS) { cylinder_t *cyl = dive->cylinder + i; cyl->type.size.mliter = lrint(tank.volume * 1000); cyl->type.workingpressure.mbar = lrint(tank.workpressure * 1000); cyl->cylinder_use = OC_GAS; if (tank.type & DC_TANKINFO_CC_O2) cyl->cylinder_use = OXYGEN; if (tank.type & DC_TANKINFO_CC_DILUENT) cyl->cylinder_use = DILUENT; if (tank.type & DC_TANKINFO_IMPERIAL) { if (same_string(devdata->model, "Suunto EON Steel")) { /* Suunto EON Steele gets this wrong. Badly. * but on the plus side it only supports a few imperial sizes, * so let's try and guess at least the most common ones. * First, the pressures are off by a constant factor. WTF? * Then we can round the wet sizes so we get to multiples of 10 * for cuft sizes (as that's all that you can enter) */ dive->cylinder[i].type.workingpressure.mbar = lrint( dive->cylinder[i].type.workingpressure.mbar * 206.843 / 206.7 ); char name_buffer[17]; int rounded_size = lrint(ml_to_cuft(gas_volume(&dive->cylinder[i], dive->cylinder[i].type.workingpressure))); rounded_size = (int)((rounded_size + 5) / 10) * 10; switch (dive->cylinder[i].type.workingpressure.mbar) { case 206843: snprintf(name_buffer, sizeof(name_buffer), "AL%d", rounded_size); break; case 234422: /* this is wrong - HP tanks tend to be 3440, but Suunto only allows 3400 */ snprintf(name_buffer, sizeof(name_buffer), "HP%d", rounded_size); break; case 179263: snprintf(name_buffer, sizeof(name_buffer), "LP+%d", rounded_size); break; case 165474: snprintf(name_buffer, sizeof(name_buffer), "LP%d", rounded_size); break; default: snprintf(name_buffer, sizeof(name_buffer), "%d cuft", rounded_size); break; } dive->cylinder[i].type.description = copy_string(name_buffer); dive->cylinder[i].type.size.mliter = lrint(cuft_to_l(rounded_size) * 1000 / mbar_to_atm(dive->cylinder[i].type.workingpressure.mbar)); } } if (tank.gasmix != i) { // we don't handle this, yet shown_warning = true; report_error("gasmix %d for tank %d doesn't match", tank.gasmix, i); } } if (!IS_FP_SAME(tank.volume, 0.0)) no_volume = false; // this new API also gives us the beginning and end pressure for the tank // normally 0 is not a valid pressure, but for some Uwatec dive computers we // don't get the actual start and end pressure, but instead a start pressure // that matches the consumption and an end pressure of always 0 // In order to make this work, we arbitrary shift this up by 30bar so the // rest of the code treats this as if they were valid values if (!IS_FP_SAME(tank.beginpressure, 0.0)) { if (!IS_FP_SAME(tank.endpressure, 0.0)) { dive->cylinder[i].start.mbar = lrint(tank.beginpressure * 1000); dive->cylinder[i].end.mbar = lrint(tank.endpressure * 1000); } else if (same_string(devdata->vendor, "Uwatec")) { dive->cylinder[i].start.mbar = lrint(tank.beginpressure * 1000 + 30000); dive->cylinder[i].end.mbar = 30000; } } } if (no_volume) { /* for the first tank, if there is no tanksize available from the * dive computer, fill in the default tank information (if set) */ fill_default_cylinder(&dive->cylinder[i]); } /* whatever happens, make sure there is a name for the cylinder */ if (empty_string(dive->cylinder[i].type.description)) dive->cylinder[i].type.description = strdup(translate("gettextFromC", "unknown")); } return DC_STATUS_SUCCESS; } static void handle_event(struct divecomputer *dc, struct sample *sample, dc_sample_value_t value) { int type, time; struct event *ev; /* we mark these for translation here, but we store the untranslated strings * and only translate them when they are displayed on screen */ static const char *events[] = { [SAMPLE_EVENT_NONE] = QT_TRANSLATE_NOOP("gettextFromC", "none"), [SAMPLE_EVENT_DECOSTOP] = QT_TRANSLATE_NOOP("gettextFromC", "deco stop"), [SAMPLE_EVENT_RBT] = QT_TRANSLATE_NOOP("gettextFromC", "rbt"), [SAMPLE_EVENT_ASCENT] = QT_TRANSLATE_NOOP("gettextFromC", "ascent"), [SAMPLE_EVENT_CEILING] = QT_TRANSLATE_NOOP("gettextFromC", "ceiling"), [SAMPLE_EVENT_WORKLOAD] = QT_TRANSLATE_NOOP("gettextFromC", "workload"), [SAMPLE_EVENT_TRANSMITTER] = QT_TRANSLATE_NOOP("gettextFromC", "transmitter"), [SAMPLE_EVENT_VIOLATION] = QT_TRANSLATE_NOOP("gettextFromC", "violation"), [SAMPLE_EVENT_BOOKMARK] = QT_TRANSLATE_NOOP("gettextFromC", "bookmark"), [SAMPLE_EVENT_SURFACE] = QT_TRANSLATE_NOOP("gettextFromC", "surface"), [SAMPLE_EVENT_SAFETYSTOP] = QT_TRANSLATE_NOOP("gettextFromC", "safety stop"), [SAMPLE_EVENT_GASCHANGE] = QT_TRANSLATE_NOOP("gettextFromC", "gaschange"), [SAMPLE_EVENT_SAFETYSTOP_VOLUNTARY] = QT_TRANSLATE_NOOP("gettextFromC", "safety stop (voluntary)"), [SAMPLE_EVENT_SAFETYSTOP_MANDATORY] = QT_TRANSLATE_NOOP("gettextFromC", "safety stop (mandatory)"), [SAMPLE_EVENT_DEEPSTOP] = QT_TRANSLATE_NOOP("gettextFromC", "deepstop"), [SAMPLE_EVENT_CEILING_SAFETYSTOP] = QT_TRANSLATE_NOOP("gettextFromC", "ceiling (safety stop)"), [SAMPLE_EVENT_FLOOR] = QT_TRANSLATE_NOOP3("gettextFromC", "below floor", "event showing dive is below deco floor and adding deco time"), [SAMPLE_EVENT_DIVETIME] = QT_TRANSLATE_NOOP("gettextFromC", "divetime"), [SAMPLE_EVENT_MAXDEPTH] = QT_TRANSLATE_NOOP("gettextFromC", "maxdepth"), [SAMPLE_EVENT_OLF] = QT_TRANSLATE_NOOP("gettextFromC", "OLF"), [SAMPLE_EVENT_PO2] = QT_TRANSLATE_NOOP("gettextFromC", "pO₂"), [SAMPLE_EVENT_AIRTIME] = QT_TRANSLATE_NOOP("gettextFromC", "airtime"), [SAMPLE_EVENT_RGBM] = QT_TRANSLATE_NOOP("gettextFromC", "rgbm"), [SAMPLE_EVENT_HEADING] = QT_TRANSLATE_NOOP("gettextFromC", "heading"), [SAMPLE_EVENT_TISSUELEVEL] = QT_TRANSLATE_NOOP("gettextFromC", "tissue level warning"), [SAMPLE_EVENT_GASCHANGE2] = QT_TRANSLATE_NOOP("gettextFromC", "gaschange"), }; const int nr_events = sizeof(events) / sizeof(const char *); const char *name; /* * Other evens might be more interesting, but for now we just print them out. */ type = value.event.type; name = QT_TRANSLATE_NOOP("gettextFromC", "invalid event number"); if (type < nr_events && events[type]) name = events[type]; #ifdef SAMPLE_EVENT_STRING if (type == SAMPLE_EVENT_STRING) name = value.event.name; #endif time = value.event.time; if (sample) time += sample->time.seconds; ev = add_event(dc, time, type, value.event.flags, value.event.value, name); if (event_is_gaschange(ev) && ev->gas.index >= 0) current_gas_index = ev->gas.index; } static void handle_gasmix(struct divecomputer *dc, struct sample *sample, int idx) { if (idx < 0 || idx >= MAX_CYLINDERS) return; add_event(dc, sample->time.seconds, SAMPLE_EVENT_GASCHANGE2, idx+1, 0, "gaschange"); current_gas_index = idx; } void sample_cb(dc_sample_type_t type, dc_sample_value_t value, void *userdata) { static unsigned int nsensor = 0; struct divecomputer *dc = userdata; struct sample *sample; /* * We fill in the "previous" sample - except for DC_SAMPLE_TIME, * which creates a new one. */ sample = dc->samples ? dc->sample + dc->samples - 1 : NULL; /* * Ok, sanity check. * If first sample is not a DC_SAMPLE_TIME, Allocate a sample for us */ if (sample == NULL && type != DC_SAMPLE_TIME) sample = prepare_sample(dc); switch (type) { case DC_SAMPLE_TIME: nsensor = 0; // Create a new sample. // Mark depth as negative sample = prepare_sample(dc); sample->time.seconds = value.time; sample->depth.mm = -1; // The current sample gets some sticky values // that may have been around from before, these // values will be overwritten by new data if available sample->in_deco = in_deco; sample->ndl.seconds = ndl; sample->stoptime.seconds = stoptime; sample->stopdepth.mm = stopdepth; sample->setpoint.mbar = po2; sample->cns = cns; sample->heartbeat = heartbeat; sample->bearing.degrees = bearing; finish_sample(dc); break; case DC_SAMPLE_DEPTH: sample->depth.mm = lrint(value.depth * 1000); break; case DC_SAMPLE_PRESSURE: add_sample_pressure(sample, value.pressure.tank, lrint(value.pressure.value * 1000)); break; case DC_SAMPLE_GASMIX: handle_gasmix(dc, sample, value.gasmix); break; case DC_SAMPLE_TEMPERATURE: sample->temperature.mkelvin = C_to_mkelvin(value.temperature); break; case DC_SAMPLE_EVENT: handle_event(dc, sample, value); break; case DC_SAMPLE_RBT: sample->rbt.seconds = (!strncasecmp(dc->model, "suunto", 6)) ? value.rbt : value.rbt * 60; break; #ifdef DC_SAMPLE_TTS case DC_SAMPLE_TTS: sample->tts.seconds = value.time; break; #endif case DC_SAMPLE_HEARTBEAT: sample->heartbeat = heartbeat = value.heartbeat; break; case DC_SAMPLE_BEARING: sample->bearing.degrees = bearing = value.bearing; break; #ifdef DEBUG_DC_VENDOR case DC_SAMPLE_VENDOR: printf(" ", FRACTION(sample->time.seconds, 60), value.vendor.type, value.vendor.size); for (int i = 0; i < value.vendor.size; ++i) printf("%02X", ((unsigned char *)value.vendor.data)[i]); printf("\n"); break; #endif case DC_SAMPLE_SETPOINT: /* for us a setpoint means constant pO2 from here */ sample->setpoint.mbar = po2 = lrint(value.setpoint * 1000); break; case DC_SAMPLE_PPO2: if (nsensor < 3) sample->o2sensor[nsensor].mbar = lrint(value.ppo2 * 1000); else report_error("%d is more o2 sensors than we can handle", nsensor); nsensor++; // Set the amount of detected o2 sensors if (nsensor > dc->no_o2sensors) dc->no_o2sensors = nsensor; break; case DC_SAMPLE_CNS: sample->cns = cns = lrint(value.cns * 100); break; case DC_SAMPLE_DECO: if (value.deco.type == DC_DECO_NDL) { sample->ndl.seconds = ndl = value.deco.time; sample->stopdepth.mm = stopdepth = lrint(value.deco.depth * 1000.0); sample->in_deco = in_deco = false; } else if (value.deco.type == DC_DECO_DECOSTOP || value.deco.type == DC_DECO_DEEPSTOP) { sample->stopdepth.mm = stopdepth = lrint(value.deco.depth * 1000.0); sample->stoptime.seconds = stoptime = value.deco.time; sample->in_deco = in_deco = stopdepth > 0; ndl = 0; } else if (value.deco.type == DC_DECO_SAFETYSTOP) { sample->in_deco = in_deco = false; sample->stopdepth.mm = stopdepth = lrint(value.deco.depth * 1000.0); sample->stoptime.seconds = stoptime = value.deco.time; } default: break; } } static void dev_info(device_data_t *devdata, const char *fmt, ...) { UNUSED(devdata); static char buffer[1024]; va_list ap; va_start(ap, fmt); vsnprintf(buffer, sizeof(buffer), fmt, ap); va_end(ap); progress_bar_text = buffer; if (progress_callback) (*progress_callback)(buffer); } static int import_dive_number = 0; static int parse_samples(device_data_t *devdata, struct divecomputer *dc, dc_parser_t *parser) { UNUSED(devdata); // Parse the sample data. return dc_parser_samples_foreach(parser, sample_cb, dc); } static int might_be_same_dc(struct divecomputer *a, struct divecomputer *b) { if (!a->model || !b->model) return 1; if (strcasecmp(a->model, b->model)) return 0; if (!a->deviceid || !b->deviceid) return 1; return a->deviceid == b->deviceid; } static int match_one_dive(struct divecomputer *a, struct dive *dive) { struct divecomputer *b = &dive->dc; /* * Walk the existing dive computer data, * see if we have a match (or an anti-match: * the same dive computer but a different * dive ID). */ do { int match = match_one_dc(a, b); if (match) return match > 0; b = b->next; } while (b); /* Ok, no exact dive computer match. Does the date match? */ b = &dive->dc; do { if (a->when == b->when && might_be_same_dc(a, b)) return 1; b = b->next; } while (b); return 0; } /* * Check if this dive already existed before the import */ static int find_dive(struct divecomputer *match) { int i; for (i = dive_table.nr - 1; i >= 0; i--) { struct dive *old = dive_table.dives[i]; if (match_one_dive(match, old)) return 1; } return 0; } /* * Like g_strdup_printf(), but without the stupid g_malloc/g_free confusion. * And we limit the string to some arbitrary size. */ static char *str_printf(const char *fmt, ...) { va_list args; char buf[1024]; va_start(args, fmt); vsnprintf(buf, sizeof(buf) - 1, fmt, args); va_end(args); buf[sizeof(buf) - 1] = 0; return strdup(buf); } /* * The dive ID for libdivecomputer dives is the first word of the * SHA1 of the fingerprint, if it exists. * * NOTE! This is byte-order dependent, and I don't care. */ static uint32_t calculate_diveid(const unsigned char *fingerprint, unsigned int fsize) { uint32_t csum[5]; if (!fingerprint || !fsize) return 0; SHA1(fingerprint, fsize, (unsigned char *)csum); return csum[0]; } #ifdef DC_FIELD_STRING static uint32_t calculate_string_hash(const char *str) { return calculate_diveid((const unsigned char *)str, strlen(str)); } /* * Find an existing device ID for this device model and serial number */ static void dc_match_serial(void *_dc, const char *model, uint32_t deviceid, const char *nickname, const char *serial, const char *firmware) { UNUSED(nickname); UNUSED(firmware); struct divecomputer *dc = _dc; if (!deviceid) return; if (!dc->model || !model || strcasecmp(dc->model, model)) return; if (!dc->serial || !serial || strcasecmp(dc->serial, serial)) return; dc->deviceid = deviceid; } /* * Set the serial number. * * This also sets the device ID by looking for existing devices that * have that serial number. * * If no existing device ID exists, create a new by hashing the serial * number string. */ static void set_dc_serial(struct divecomputer *dc, const char *serial) { dc->serial = serial; call_for_each_dc(dc, dc_match_serial, false); if (!dc->deviceid) dc->deviceid = calculate_string_hash(serial); } static void parse_string_field(device_data_t *devdata, struct dive *dive, dc_field_string_t *str) { // Our dive ID is the string hash of the "Dive ID" string if (!strcmp(str->desc, "Dive ID")) { if (!dive->dc.diveid) dive->dc.diveid = calculate_string_hash(str->value); return; } add_extra_data(&dive->dc, str->desc, str->value); if (!strcmp(str->desc, "Serial")) { set_dc_serial(&dive->dc, str->value); return; } if (!strcmp(str->desc, "FW Version")) { dive->dc.fw_version = strdup(str->value); return; } /* GPS data? */ if (!strncmp(str->desc, "GPS", 3)) { char *line = (char *) str->value; location_t location; parse_location(line, &location); if (location.lat.udeg && location.lon.udeg) { unregister_dive_from_dive_site(dive); add_dive_to_dive_site(dive, create_dive_site_with_gps(str->value, &location, devdata->sites)); } } } #endif static dc_status_t libdc_header_parser(dc_parser_t *parser, device_data_t *devdata, struct dive *dive) { dc_status_t rc = 0; dc_datetime_t dt = { 0 }; struct tm tm; rc = dc_parser_get_datetime(parser, &dt); if (rc != DC_STATUS_SUCCESS && rc != DC_STATUS_UNSUPPORTED) { dev_info(devdata, translate("gettextFromC", "Error parsing the datetime")); return rc; } dive->dc.deviceid = devdata->deviceid; if (rc == DC_STATUS_SUCCESS) { tm.tm_year = dt.year; tm.tm_mon = dt.month - 1; tm.tm_mday = dt.day; tm.tm_hour = dt.hour; tm.tm_min = dt.minute; tm.tm_sec = dt.second; dive->when = dive->dc.when = utc_mktime(&tm); } // Parse the divetime. char *date_string = get_dive_date_c_string(dive->when); dev_info(devdata, translate("gettextFromC", "Dive %d: %s"), import_dive_number, date_string); free(date_string); unsigned int divetime = 0; rc = dc_parser_get_field(parser, DC_FIELD_DIVETIME, 0, &divetime); if (rc != DC_STATUS_SUCCESS && rc != DC_STATUS_UNSUPPORTED) { dev_info(devdata, translate("gettextFromC", "Error parsing the divetime")); return rc; } if (rc == DC_STATUS_SUCCESS) dive->dc.duration.seconds = divetime; // Parse the maxdepth. double maxdepth = 0.0; rc = dc_parser_get_field(parser, DC_FIELD_MAXDEPTH, 0, &maxdepth); if (rc != DC_STATUS_SUCCESS && rc != DC_STATUS_UNSUPPORTED) { dev_info(devdata, translate("gettextFromC", "Error parsing the maxdepth")); return rc; } if (rc == DC_STATUS_SUCCESS) dive->dc.maxdepth.mm = lrint(maxdepth * 1000); // Parse temperatures double temperature; dc_field_type_t temp_fields[] = {DC_FIELD_TEMPERATURE_SURFACE, DC_FIELD_TEMPERATURE_MAXIMUM, DC_FIELD_TEMPERATURE_MINIMUM}; for (int i = 0; i < 3; i++) { rc = dc_parser_get_field(parser, temp_fields[i], 0, &temperature); if (rc != DC_STATUS_SUCCESS && rc != DC_STATUS_UNSUPPORTED) { dev_info(devdata, translate("gettextFromC", "Error parsing temperature")); return rc; } if (rc == DC_STATUS_SUCCESS) switch(i) { case 0: dive->dc.airtemp.mkelvin = C_to_mkelvin(temperature); break; case 1: // we don't distinguish min and max water temp here, so take min if given, max otherwise case 2: dive->dc.watertemp.mkelvin = C_to_mkelvin(temperature); break; } } // Parse the gas mixes. unsigned int ngases = 0; rc = dc_parser_get_field(parser, DC_FIELD_GASMIX_COUNT, 0, &ngases); if (rc != DC_STATUS_SUCCESS && rc != DC_STATUS_UNSUPPORTED) { dev_info(devdata, translate("gettextFromC", "Error parsing the gas mix count")); return rc; } // Check if the libdivecomputer version already supports salinity & atmospheric dc_salinity_t salinity = { .type = DC_WATER_SALT, .density = SEAWATER_SALINITY / 10.0 }; rc = dc_parser_get_field(parser, DC_FIELD_SALINITY, 0, &salinity); if (rc != DC_STATUS_SUCCESS && rc != DC_STATUS_UNSUPPORTED) { dev_info(devdata, translate("gettextFromC", "Error obtaining water salinity")); return rc; } if (rc == DC_STATUS_SUCCESS) dive->dc.salinity = lrint(salinity.density * 10.0); double surface_pressure = 0; rc = dc_parser_get_field(parser, DC_FIELD_ATMOSPHERIC, 0, &surface_pressure); if (rc != DC_STATUS_SUCCESS && rc != DC_STATUS_UNSUPPORTED) { dev_info(devdata, translate("gettextFromC", "Error obtaining surface pressure")); return rc; } if (rc == DC_STATUS_SUCCESS) dive->dc.surface_pressure.mbar = lrint(surface_pressure * 1000.0); #ifdef DC_FIELD_STRING // The dive parsing may give us more device information int idx; for (idx = 0; idx < 100; idx++) { dc_field_string_t str = { NULL }; rc = dc_parser_get_field(parser, DC_FIELD_STRING, idx, &str); if (rc != DC_STATUS_SUCCESS) break; if (!str.desc || !str.value) break; parse_string_field(devdata, dive, &str); } #endif dc_divemode_t divemode; rc = dc_parser_get_field(parser, DC_FIELD_DIVEMODE, 0, &divemode); if (rc != DC_STATUS_SUCCESS && rc != DC_STATUS_UNSUPPORTED) { dev_info(devdata, translate("gettextFromC", "Error obtaining dive mode")); return rc; } if (rc == DC_STATUS_SUCCESS) switch(divemode) { case DC_DIVEMODE_FREEDIVE: dive->dc.divemode = FREEDIVE; break; case DC_DIVEMODE_GAUGE: case DC_DIVEMODE_OC: /* Open circuit */ dive->dc.divemode = OC; break; case DC_DIVEMODE_CCR: /* Closed circuit rebreather*/ dive->dc.divemode = CCR; break; case DC_DIVEMODE_SCR: /* Semi-closed circuit rebreather */ dive->dc.divemode = PSCR; break; } rc = parse_gasmixes(devdata, dive, parser, ngases); if (rc != DC_STATUS_SUCCESS && rc != DC_STATUS_UNSUPPORTED) { dev_info(devdata, translate("gettextFromC", "Error parsing the gas mix")); return rc; } return DC_STATUS_SUCCESS; } /* returns true if we want libdivecomputer's dc_device_foreach() to continue, * false otherwise */ static int dive_cb(const unsigned char *data, unsigned int size, const unsigned char *fingerprint, unsigned int fsize, void *userdata) { int rc; dc_parser_t *parser = NULL; device_data_t *devdata = userdata; struct dive *dive = NULL; /* reset static data, that is only valid per dive */ stoptime = stopdepth = po2 = cns = heartbeat = 0; ndl = bearing = -1; in_deco = false; current_gas_index = -1; rc = create_parser(devdata, &parser); if (rc != DC_STATUS_SUCCESS) { dev_info(devdata, translate("gettextFromC", "Unable to create parser for %s %s"), devdata->vendor, devdata->product); return false; } rc = dc_parser_set_data(parser, data, size); if (rc != DC_STATUS_SUCCESS) { dev_info(devdata, translate("gettextFromC", "Error registering the data")); goto error_exit; } import_dive_number++; dive = alloc_dive(); // Fill in basic fields dive->dc.model = strdup(devdata->model); dive->dc.diveid = calculate_diveid(fingerprint, fsize); /* Should we add it to the cached fingerprint file? */ if (fingerprint && fsize && !devdata->fingerprint) { devdata->fingerprint = calloc(fsize, 1); if (devdata->fingerprint) { devdata->fsize = fsize; devdata->fdiveid = dive->dc.diveid; memcpy(devdata->fingerprint, fingerprint, fsize); } } // Parse the dive's header data rc = libdc_header_parser (parser, devdata, dive); if (rc != DC_STATUS_SUCCESS) { dev_info(devdata, translate("getextFromC", "Error parsing the header")); goto error_exit; } // Initialize the sample data. rc = parse_samples(devdata, &dive->dc, parser); if (rc != DC_STATUS_SUCCESS) { dev_info(devdata, translate("gettextFromC", "Error parsing the samples")); goto error_exit; } /* If we already saw this dive, abort. */ if (!devdata->force_download && find_dive(&dive->dc)) { char *date_string = get_dive_date_c_string(dive->when); dev_info(devdata, translate("gettextFromC", "Already downloaded dive at %s"), date_string); free(date_string); goto error_exit; } dc_parser_destroy(parser); /* Various libdivecomputer interface fixups */ if (dive->dc.airtemp.mkelvin == 0 && first_temp_is_air && dive->dc.samples) { dive->dc.airtemp = dive->dc.sample[0].temperature; dive->dc.sample[0].temperature.mkelvin = 0; } record_dive_to_table(dive, devdata->download_table); return true; error_exit: dc_parser_destroy(parser); free(dive); return false; } /* * The device ID for libdivecomputer devices is the first 32-bit word * of the SHA1 hash of the model/firmware/serial numbers. * * NOTE! This is byte-order-dependent. And I can't find it in myself to * care. */ static uint32_t calculate_sha1(unsigned int model, unsigned int firmware, unsigned int serial) { SHA_CTX ctx; uint32_t csum[5]; SHA1_Init(&ctx); SHA1_Update(&ctx, &model, sizeof(model)); SHA1_Update(&ctx, &firmware, sizeof(firmware)); SHA1_Update(&ctx, &serial, sizeof(serial)); SHA1_Final((unsigned char *)csum, &ctx); return csum[0]; } /* * libdivecomputer has returned two different serial numbers for the * same device in different versions. First it used to just do the four * bytes as one 32-bit number, then it turned it into a decimal number * with each byte giving two digits (0-99). * * The only way we can tell is by looking at the format of the number, * so we'll just fix it to the first format. */ static unsigned int undo_libdivecomputer_suunto_nr_changes(unsigned int serial) { unsigned char b0, b1, b2, b3; /* * The second format will never have more than 8 decimal * digits, so do a cheap check first */ if (serial >= 100000000) return serial; /* The original format seems to be four bytes of values 00-99 */ b0 = (serial >> 0) & 0xff; b1 = (serial >> 8) & 0xff; b2 = (serial >> 16) & 0xff; b3 = (serial >> 24) & 0xff; /* Looks like an old-style libdivecomputer serial number */ if ((b0 < 100) && (b1 < 100) && (b2 < 100) && (b3 < 100)) return serial; /* Nope, it was converted. */ b0 = serial % 100; serial /= 100; b1 = serial % 100; serial /= 100; b2 = serial % 100; serial /= 100; b3 = serial % 100; serial = b0 + (b1 << 8) + (b2 << 16) + (b3 << 24); return serial; } static unsigned int fixup_suunto_versions(device_data_t *devdata, const dc_event_devinfo_t *devinfo) { unsigned int serial = devinfo->serial; char serial_nr[13] = ""; char firmware[13] = ""; first_temp_is_air = 1; serial = undo_libdivecomputer_suunto_nr_changes(serial); if (serial) { snprintf(serial_nr, sizeof(serial_nr), "%02d%02d%02d%02d", (devinfo->serial >> 24) & 0xff, (devinfo->serial >> 16) & 0xff, (devinfo->serial >> 8) & 0xff, (devinfo->serial >> 0) & 0xff); } if (devinfo->firmware) { snprintf(firmware, sizeof(firmware), "%d.%d.%d", (devinfo->firmware >> 16) & 0xff, (devinfo->firmware >> 8) & 0xff, (devinfo->firmware >> 0) & 0xff); } create_device_node(devdata->model, devdata->deviceid, serial_nr, firmware, ""); return serial; } #ifndef O_BINARY #define O_BINARY 0 #endif static void do_save_fingerprint(device_data_t *devdata, const char *tmp, const char *final) { int fd, written = -1; fd = subsurface_open(tmp, O_WRONLY | O_BINARY | O_CREAT | O_TRUNC, 0666); if (fd < 0) return; /* The fingerprint itself.. */ written = write(fd, devdata->fingerprint, devdata->fsize); /* ..followed by the dive ID of the fingerprinted dive */ if (write(fd, &devdata->fdiveid, 4) != 4) written = -1; /* I'd like to do fsync() here too, but does Windows support it? */ if (close(fd) < 0) written = -1; if (written == devdata->fsize) { if (!subsurface_rename(tmp, final)) return; } unlink(tmp); } /* * Save the fingerprint after a successful download */ static void save_fingerprint(device_data_t *devdata) { char *dir, *tmp, *final; if (!devdata->fingerprint) return; dir = format_string("%s/fingerprints", system_default_directory()); subsurface_mkdir(dir); tmp = format_string("%s/%04x.tmp", dir, devdata->deviceid); final = format_string("%s/%04x", dir, devdata->deviceid); free(dir); do_save_fingerprint(devdata, tmp, final); free(tmp); free(final); free(devdata->fingerprint); devdata->fingerprint = NULL; } static int has_dive(unsigned int deviceid, unsigned int diveid) { int i; struct dive *dive; for_each_dive (i, dive) { struct divecomputer *dc; for_each_dc (dive, dc) { if (dc->deviceid != deviceid) continue; if (dc->diveid != diveid) continue; return 1; } } return 0; } /* * The fingerprint cache files contain the actual libdivecomputer * fingerprint, followed by 4 bytes of diveid data. Before we use * the fingerprint data, verify that we actually do have that * fingerprinted dive. */ static void verify_fingerprint(dc_device_t *device, device_data_t *devdata, const unsigned char *buffer, size_t size) { unsigned int diveid, deviceid; if (size <= 4) return; size -= 4; /* Get the dive ID from the end of the fingerprint cache file.. */ memcpy(&diveid, buffer + size, 4); /* .. and the device ID from the device data */ deviceid = devdata->deviceid; /* Only use it if we *have* that dive! */ if (has_dive(deviceid, diveid)) dc_device_set_fingerprint(device, buffer, size); } /* * Look up the fingerprint from the fingerprint caches, and * give it to libdivecomputer to avoid downloading already * downloaded dives. */ static void lookup_fingerprint(dc_device_t *device, device_data_t *devdata) { char *cachename; struct memblock mem; if (devdata->force_download) return; cachename = format_string("%s/fingerprints/%04x", system_default_directory(), devdata->deviceid); if (readfile(cachename, &mem) > 0) { verify_fingerprint(device, devdata, mem.buffer, mem.size); free(mem.buffer); } free(cachename); } static void event_cb(dc_device_t *device, dc_event_type_t event, const void *data, void *userdata) { UNUSED(device); const dc_event_progress_t *progress = data; const dc_event_devinfo_t *devinfo = data; const dc_event_clock_t *clock = data; const dc_event_vendor_t *vendor = data; device_data_t *devdata = userdata; unsigned int serial; switch (event) { case DC_EVENT_WAITING: dev_info(devdata, translate("gettextFromC", "Event: waiting for user action")); break; case DC_EVENT_PROGRESS: if (!progress->maximum) break; progress_bar_fraction = (double)progress->current / (double)progress->maximum; break; case DC_EVENT_DEVINFO: if (dc_descriptor_get_model(devdata->descriptor) != devinfo->model) { dc_descriptor_t *better_descriptor = get_descriptor(dc_descriptor_get_type(devdata->descriptor), devinfo->model); if (better_descriptor != NULL) { fprintf(stderr, "EVENT_DEVINFO gave us a different detected product (model %d instead of %d), which we are using now.\n", devinfo->model, dc_descriptor_get_model(devdata->descriptor)); devdata->descriptor = better_descriptor; devdata->product = dc_descriptor_get_product(better_descriptor); devdata->vendor = dc_descriptor_get_vendor(better_descriptor); devdata->model = str_printf("%s %s", devdata->vendor, devdata->product); } else { fprintf(stderr, "EVENT_DEVINFO gave us a different detected product (model %d instead of %d), but that one is unknown.\n", devinfo->model, dc_descriptor_get_model(devdata->descriptor)); } } dev_info(devdata, translate("gettextFromC", "model=%s firmware=%u serial=%u"), devdata->product, devinfo->firmware, devinfo->serial); if (devdata->libdc_logfile) { fprintf(devdata->libdc_logfile, "Event: model=%u (0x%08x), firmware=%u (0x%08x), serial=%u (0x%08x)\n", devinfo->model, devinfo->model, devinfo->firmware, devinfo->firmware, devinfo->serial, devinfo->serial); } /* * libdivecomputer doesn't give serial numbers in the proper string form, * so we have to see if we can do some vendor-specific munging. */ serial = devinfo->serial; if (!strcmp(devdata->vendor, "Suunto")) serial = fixup_suunto_versions(devdata, devinfo); devdata->deviceid = calculate_sha1(devinfo->model, devinfo->firmware, serial); /* really, serial and firmware version are NOT numbers. We'll try to save them here * in something that might work, but this really needs to be handled with the * DC_FIELD_STRING interface instead */ devdata->libdc_serial = devinfo->serial; devdata->libdc_firmware = devinfo->firmware; lookup_fingerprint(device, devdata); break; case DC_EVENT_CLOCK: dev_info(devdata, translate("gettextFromC", "Event: systime=%" PRId64 ", devtime=%u\n"), (uint64_t)clock->systime, clock->devtime); if (devdata->libdc_logfile) { fprintf(devdata->libdc_logfile, "Event: systime=%" PRId64 ", devtime=%u\n", (uint64_t)clock->systime, clock->devtime); } break; case DC_EVENT_VENDOR: if (devdata->libdc_logfile) { fprintf(devdata->libdc_logfile, "Event: vendor="); for (unsigned int i = 0; i < vendor->size; ++i) fprintf(devdata->libdc_logfile, "%02X", vendor->data[i]); fprintf(devdata->libdc_logfile, "\n"); } break; default: break; } } int import_thread_cancelled; static int cancel_cb(void *userdata) { UNUSED(userdata); return import_thread_cancelled; } static const char *do_device_import(device_data_t *data) { dc_status_t rc; dc_device_t *device = data->device; data->model = str_printf("%s %s", data->vendor, data->product); // Register the event handler. int events = DC_EVENT_WAITING | DC_EVENT_PROGRESS | DC_EVENT_DEVINFO | DC_EVENT_CLOCK | DC_EVENT_VENDOR; rc = dc_device_set_events(device, events, event_cb, data); if (rc != DC_STATUS_SUCCESS) return translate("gettextFromC", "Error registering the event handler."); // Register the cancellation handler. rc = dc_device_set_cancel(device, cancel_cb, data); if (rc != DC_STATUS_SUCCESS) return translate("gettextFromC", "Error registering the cancellation handler."); if (data->libdc_dump) { dc_buffer_t *buffer = dc_buffer_new(0); rc = dc_device_dump(device, buffer); if (rc == DC_STATUS_SUCCESS && dumpfile_name) { FILE *fp = subsurface_fopen(dumpfile_name, "wb"); if (fp != NULL) { fwrite(dc_buffer_get_data(buffer), 1, dc_buffer_get_size(buffer), fp); fclose(fp); } } dc_buffer_free(buffer); } else { rc = dc_device_foreach(device, dive_cb, data); } if (rc != DC_STATUS_SUCCESS) { progress_bar_fraction = 0.0; return translate("gettextFromC", "Dive data import error"); } /* All good */ return NULL; } void logfunc(dc_context_t *context, dc_loglevel_t loglevel, const char *file, unsigned int line, const char *function, const char *msg, void *userdata) { UNUSED(context); const char *loglevels[] = { "NONE", "ERROR", "WARNING", "INFO", "DEBUG", "ALL" }; FILE *fp = (FILE *)userdata; if (loglevel == DC_LOGLEVEL_ERROR || loglevel == DC_LOGLEVEL_WARNING) { fprintf(fp, "%s: %s [in %s:%d (%s)]\n", loglevels[loglevel], msg, file, line, function); } else { fprintf(fp, "%s: %s\n", loglevels[loglevel], msg); } } char *transport_string[] = { "SERIAL", "USB", "USBHID", "IRDA", "BT", "BLE" }; /* * Get the transports supported by us (as opposed to * the list of transports supported by a particular * dive computer). * * This could have various platform rules too.. */ unsigned int get_supported_transports(device_data_t *data) { #if defined(Q_OS_IOS) // BLE only - don't bother with being clever. return DC_TRANSPORT_BLE; #endif // start out with the list of transports that libdivecomputer claims to support // dc_context_get_transports ignores its context argument... unsigned int supported = dc_context_get_transports(NULL); // then add the ones that we have our own implementations for #if defined(BT_SUPPORT) supported |= DC_TRANSPORT_BLUETOOTH; #endif #if defined(BLE_SUPPORT) supported |= DC_TRANSPORT_BLE; #endif if (data) { /* * If we have device data available, we can refine this: * We don't support BT or BLE unless bluetooth_mode was set, * and if it was we won't try any of the other transports. */ if (data->bluetooth_mode) { supported &= (DC_TRANSPORT_BLUETOOTH | DC_TRANSPORT_BLE); if (!strncmp(data->devname, "LE:", 3)) supported &= DC_TRANSPORT_BLE; } else { supported &= ~(DC_TRANSPORT_BLUETOOTH | DC_TRANSPORT_BLE); } } return supported; } dc_status_t divecomputer_device_open(device_data_t *data) { dc_status_t rc; dc_descriptor_t *descriptor = data->descriptor; dc_context_t *context = data->context; unsigned int transports, supported; transports = dc_descriptor_get_transports(descriptor); supported = get_supported_transports(data); transports &= supported; if (!transports) { report_error("Dive computer transport not supported"); return DC_STATUS_UNSUPPORTED; } #ifdef BT_SUPPORT if (transports & DC_TRANSPORT_BLUETOOTH) { rc = rfcomm_stream_open(&data->iostream, context, data->devname); if (rc == DC_STATUS_SUCCESS) return rc; } #endif #ifdef BLE_SUPPORT if (transports & DC_TRANSPORT_BLE) { rc = ble_packet_open(&data->iostream, context, data->devname, data); if (rc == DC_STATUS_SUCCESS) return rc; } #endif if (transports & DC_TRANSPORT_USBHID) { // Discover the usbhid device. dc_iterator_t *iterator = NULL; dc_usbhid_device_t *device = NULL; dc_usbhid_iterator_new (&iterator, context, descriptor); while (dc_iterator_next (iterator, &device) == DC_STATUS_SUCCESS) break; dc_iterator_free (iterator); if (device) { rc = dc_usbhid_open(&data->iostream, context, device); dc_usbhid_device_free(device); if (rc == DC_STATUS_SUCCESS) return rc; } } /* The dive computer backend does this all internally */ if (transports & DC_TRANSPORT_USB) return DC_STATUS_SUCCESS; if (transports & DC_TRANSPORT_SERIAL) { #ifdef SERIAL_FTDI if (!strcasecmp(data->devname, "ftdi")) return ftdi_open(&data->iostream, context); #endif rc = dc_serial_open(&data->iostream, context, data->devname); if (rc == DC_STATUS_SUCCESS) return rc; } if (transports & DC_TRANSPORT_IRDA) { unsigned int address = 0; dc_iterator_t *iterator = NULL; dc_irda_device_t *device = NULL; dc_irda_iterator_new (&iterator, context, descriptor); while (dc_iterator_next (iterator, &device) == DC_STATUS_SUCCESS) { address = dc_irda_device_get_address (device); dc_irda_device_free (device); break; } dc_iterator_free (iterator); if (!address) address = strtoul(data->devname, NULL, 0); rc = dc_irda_open(&data->iostream, context, address, 1); if (rc == DC_STATUS_SUCCESS) return rc; } if (transports & DC_TRANSPORT_USBSTORAGE) { rc = dc_usb_storage_open(&data->iostream, context, data->devname); if (rc == DC_STATUS_SUCCESS) return rc; } return DC_STATUS_UNSUPPORTED; } const char *do_libdivecomputer_import(device_data_t *data) { dc_status_t rc; const char *err; FILE *fp = NULL; import_dive_number = 0; first_temp_is_air = 0; data->device = NULL; data->context = NULL; data->iostream = NULL; data->fingerprint = NULL; data->fsize = 0; if (data->libdc_log && logfile_name) fp = subsurface_fopen(logfile_name, "w"); data->libdc_logfile = fp; rc = dc_context_new(&data->context); if (rc != DC_STATUS_SUCCESS) return translate("gettextFromC", "Unable to create libdivecomputer context"); if (fp) { dc_context_set_loglevel(data->context, DC_LOGLEVEL_ALL); dc_context_set_logfunc(data->context, logfunc, fp); fprintf(data->libdc_logfile, "Subsurface: v%s, ", subsurface_git_version()); fprintf(data->libdc_logfile, "built with libdivecomputer v%s\n", dc_version(NULL)); } err = translate("gettextFromC", "Unable to open %s %s (%s)"); rc = divecomputer_device_open(data); if (rc != DC_STATUS_SUCCESS) { report_error(errmsg(rc)); } else { rc = dc_device_open(&data->device, data->context, data->descriptor, data->iostream); INFO(0, "dc_device_open error value of %d", rc); if (rc != DC_STATUS_SUCCESS && subsurface_access(data->devname, R_OK | W_OK) != 0) #if defined(SUBSURFACE_MOBILE) err = translate("gettextFromC", "Error opening the device %s %s (%s).\nIn most cases, in order to debug this issue, it is useful to send the developers the log files. You can copy them to the clipboard in the About dialog."); #else err = translate("gettextFromC", "Error opening the device %s %s (%s).\nIn most cases, in order to debug this issue, a libdivecomputer logfile will be useful.\nYou can create this logfile by selecting the corresponding checkbox in the download dialog."); #endif if (rc == DC_STATUS_SUCCESS) { err = do_device_import(data); /* TODO: Show the logfile to the user on error. */ dc_device_close(data->device); data->device = NULL; if (!data->download_table->nr) dev_info(data, translate("gettextFromC", "No new dives downloaded from dive computer")); } dc_iostream_close(data->iostream); data->iostream = NULL; } dc_context_free(data->context); data->context = NULL; if (fp) { fclose(fp); } /* * Note that we save the fingerprint unconditionally. * This is ok because we only have fingerprint data if * we got a dive header, and because we will use the * dive id to verify that we actually have the dive * it refers to before we use the fingerprint data. */ save_fingerprint(data); return err; } /* * Parse data buffers instead of dc devices downloaded data. * Intended to be used to parse profile data from binary files during import tasks. * Actually included Uwatec families because of works on datatrak and smartrak logs * and OSTC families for OSTCTools logs import. * For others, simply include them in the switch (check parameters). * Note that dc_descriptor_t in data *must* have been filled using dc_descriptor_iterator() * calls. */ dc_status_t libdc_buffer_parser(struct dive *dive, device_data_t *data, unsigned char *buffer, int size) { dc_status_t rc; dc_parser_t *parser = NULL; switch (dc_descriptor_get_type(data->descriptor)) { case DC_FAMILY_UWATEC_ALADIN: case DC_FAMILY_UWATEC_MEMOMOUSE: case DC_FAMILY_UWATEC_SMART: case DC_FAMILY_UWATEC_MERIDIAN: case DC_FAMILY_HW_OSTC: case DC_FAMILY_HW_FROG: case DC_FAMILY_HW_OSTC3: rc = dc_parser_new2(&parser, data->context, data->descriptor, 0, 0); break; default: report_error("Device type not handled!"); return DC_STATUS_UNSUPPORTED; } if (rc != DC_STATUS_SUCCESS) { report_error("Error creating parser."); dc_parser_destroy (parser); return rc; } rc = dc_parser_set_data(parser, buffer, size); if (rc != DC_STATUS_SUCCESS) { report_error("Error registering the data."); dc_parser_destroy (parser); return rc; } // Do not parse Aladin/Memomouse headers as they are fakes // Do not return on error, we can still parse the samples if (dc_descriptor_get_type(data->descriptor) != DC_FAMILY_UWATEC_ALADIN && dc_descriptor_get_type(data->descriptor) != DC_FAMILY_UWATEC_MEMOMOUSE) { rc = libdc_header_parser (parser, data, dive); if (rc != DC_STATUS_SUCCESS) { report_error("Error parsing the dive header data. Dive # %d\nStatus = %s", dive->number, errmsg(rc)); } } rc = dc_parser_samples_foreach (parser, sample_cb, &dive->dc); if (rc != DC_STATUS_SUCCESS) { report_error("Error parsing the sample data. Dive # %d\nStatus = %s", dive->number, errmsg(rc)); dc_parser_destroy (parser); return rc; } dc_parser_destroy(parser); return DC_STATUS_SUCCESS; } /* * Returns a dc_descriptor_t structure based on dc model's number and family. * * That dc_descriptor_t needs to be freed with dc_descriptor_free by the reciver. */ dc_descriptor_t *get_descriptor(dc_family_t type, unsigned int model) { dc_descriptor_t *descriptor = NULL, *needle = NULL; dc_iterator_t *iterator = NULL; dc_status_t rc; rc = dc_descriptor_iterator(&iterator); if (rc != DC_STATUS_SUCCESS) { fprintf(stderr, "Error creating the device descriptor iterator.\n"); return NULL; } while ((dc_iterator_next(iterator, &descriptor)) == DC_STATUS_SUCCESS) { unsigned int desc_model = dc_descriptor_get_model(descriptor); dc_family_t desc_type = dc_descriptor_get_type(descriptor); if (model == desc_model && type == desc_type) { needle = descriptor; break; } dc_descriptor_free(descriptor); } dc_iterator_free(iterator); return needle; }