8 #include "journal-upload.h"
11 * Write up to size bytes to buf. Return negative on error, and number of
12 * bytes written otherwise. The last case is a kind of an error too.
14 static ssize_t write_entry(char *buf, size_t size, Uploader *u) {
18 assert(size <= SSIZE_MAX);
22 switch(u->entry_state) {
24 free(u->current_cursor);
25 u->current_cursor = NULL;
27 r = sd_journal_get_cursor(u->journal, &u->current_cursor);
29 return log_error_errno(r, "Failed to get cursor: %m");
31 r = snprintf(buf + pos, size - pos,
32 "__CURSOR=%s\n", u->current_cursor);
34 /* not enough space */
39 if (pos + r == size) {
40 /* exactly one character short, but we don't need it */
48 case ENTRY_REALTIME: {
51 r = sd_journal_get_realtime_usec(u->journal, &realtime);
53 return log_error_errno(r, "Failed to get realtime timestamp: %m");
55 r = snprintf(buf + pos, size - pos,
56 "__REALTIME_TIMESTAMP="USEC_FMT"\n", realtime);
58 /* not enough space */
63 if (r + pos == size) {
64 /* exactly one character short, but we don't need it */
72 case ENTRY_MONOTONIC: {
76 r = sd_journal_get_monotonic_usec(u->journal, &monotonic, &boot_id);
78 return log_error_errno(r, "Failed to get monotonic timestamp: %m");
80 r = snprintf(buf + pos, size - pos,
81 "__MONOTONIC_TIMESTAMP="USEC_FMT"\n", monotonic);
83 /* not enough space */
88 if (r + pos == size) {
89 /* exactly one character short, but we don't need it */
101 r = sd_journal_get_monotonic_usec(u->journal, NULL, &boot_id);
103 return log_error_errno(r, "Failed to get monotonic timestamp: %m");
105 r = snprintf(buf + pos, size - pos,
106 "_BOOT_ID=%s\n", sd_id128_to_string(boot_id, sid));
108 /* not enough space */
113 if (r + pos == size) {
114 /* exactly one character short, but we don't need it */
115 buf[size - 1] = '\n';
122 case ENTRY_NEW_FIELD: {
125 r = sd_journal_enumerate_data(u->journal,
129 return log_error_errno(r, "Failed to move to next field in entry: %m");
131 u->entry_state = ENTRY_OUTRO;
135 if (!utf8_is_printable_newline(u->field_data,
136 u->field_length, false)) {
137 u->entry_state = ENTRY_BINARY_FIELD_START;
144 case ENTRY_TEXT_FIELD:
145 case ENTRY_BINARY_FIELD: {
149 done = size - pos > u->field_length - u->field_pos;
151 tocopy = u->field_length - u->field_pos;
156 (char*) u->field_data + u->field_pos,
160 buf[pos + tocopy] = '\n';
162 u->entry_state = ENTRY_NEW_FIELD;
165 u->field_pos += tocopy;
170 case ENTRY_BINARY_FIELD_START: {
174 c = memchr(u->field_data, '=', u->field_length);
175 if (!c || c == u->field_data) {
176 log_error("Invalid field.");
180 len = c - (const char*)u->field_data;
182 /* need space for label + '\n' */
183 if (size - pos < len + 1)
186 memcpy(buf + pos, u->field_data, len);
187 buf[pos + len] = '\n';
190 u->field_pos = len + 1;
194 case ENTRY_BINARY_FIELD_SIZE: {
197 /* need space for uint64_t */
201 le64 = htole64(u->field_length - u->field_pos);
202 memcpy(buf + pos, &le64, 8);
210 /* need space for '\n' */
221 assert_not_reached("WTF?");
224 assert_not_reached("WTF?");
227 static size_t journal_input_callback(void *buf, size_t size, size_t nmemb, void *userp) {
235 assert(nmemb <= SSIZE_MAX / size);
239 while (j && filled < size * nmemb) {
240 if (u->entry_state == ENTRY_DONE) {
241 r = sd_journal_next(j);
243 log_error_errno(r, "Failed to move to next entry in journal: %m");
244 return CURL_READFUNC_ABORT;
247 log_debug("No more entries, waiting for journal.");
249 log_info("No more entries, closing journal.");
250 close_journal_input(u);
253 u->uploading = false;
258 u->entry_state = ENTRY_CURSOR;
261 w = write_entry((char*)buf + filled, size * nmemb - filled, u);
263 return CURL_READFUNC_ABORT;
267 log_error("Buffer space is too small to write entry.");
268 return CURL_READFUNC_ABORT;
269 } else if (u->entry_state != ENTRY_DONE)
270 /* This means that all available space was used up */
273 log_debug("Entry %zu (%s) has been uploaded.",
274 u->entries_sent, u->current_cursor);
280 void close_journal_input(Uploader *u) {
284 log_debug("Closing journal input.");
286 sd_journal_close(u->journal);
292 static int process_journal_input(Uploader *u, int skip) {
295 r = sd_journal_next_skip(u->journal, skip);
297 return log_error_errno(r, "Failed to skip to next entry: %m");
302 u->entry_state = ENTRY_CURSOR;
303 return start_upload(u, journal_input_callback, u);
306 int check_journal_input(Uploader *u) {
307 if (u->input_event) {
310 r = sd_journal_process(u->journal);
312 log_error_errno(r, "Failed to process journal: %m");
313 close_journal_input(u);
317 if (r == SD_JOURNAL_NOP)
321 return process_journal_input(u, 1);
324 static int dispatch_journal_input(sd_event_source *event,
333 log_warning("dispatch_journal_input called when uploading, ignoring.");
337 log_debug("Detected journal input, checking for new data.");
338 return check_journal_input(u);
341 int open_journal_for_upload(Uploader *u,
350 sd_journal_set_data_threshold(j, 0);
353 fd = sd_journal_get_fd(j);
355 return log_error_errno(fd, "sd_journal_get_fd failed: %m");
357 events = sd_journal_get_events(j);
359 r = sd_journal_reliable_fd(j);
364 u->timeout = JOURNAL_UPLOAD_POLL_TIMEOUT;
366 r = sd_event_add_io(u->events, &u->input_event,
367 fd, events, dispatch_journal_input, u);
369 return log_error_errno(r, "Failed to register input event: %m");
371 log_debug("Listening for journal events on fd:%d, timeout %d",
372 fd, u->timeout == (uint64_t) -1 ? -1 : (int) u->timeout);
374 log_debug("Not listening for journal events.");
377 r = sd_journal_seek_cursor(j, cursor);
379 return log_error_errno(r, "Failed to seek to cursor %s: %m",
384 return process_journal_input(u, 1 + !!after_cursor);