diff options
Diffstat (limited to 'src/logs-show.c')
| -rw-r--r-- | src/logs-show.c | 150 |
1 files changed, 124 insertions, 26 deletions
diff --git a/src/logs-show.c b/src/logs-show.c index 539dfeddb6..358aea176f 100644 --- a/src/logs-show.c +++ b/src/logs-show.c @@ -23,6 +23,7 @@ #include <assert.h> #include <errno.h> #include <sys/poll.h> +#include <string.h> #include "logs-show.h" #include "log.h" @@ -40,6 +41,48 @@ static bool contains_unprintable(const void *p, size_t l) { return false; } +static int parse_field(const void *data, size_t length, const char *field, char **target, size_t *target_size) { + size_t fl, nl; + void *buf; + + assert(data); + assert(field); + assert(target); + assert(target_size); + + fl = strlen(field); + if (length < fl) + return 0; + + if (memcmp(data, field, fl)) + return 0; + + nl = length - fl; + buf = memdup((const char*) data + fl, nl); + if (!buf) { + log_error("Out of memory"); + return -ENOMEM; + } + + *target = buf; + *target_size = nl; + + return 1; +} + +static bool shall_print(bool show_all, char *p, size_t l) { + if (show_all) + return true; + + if (l > PRINT_THRESHOLD) + return false; + + if (contains_unprintable(p, l)) + return false; + + return true; +} + static int output_short(sd_journal *j, unsigned line, bool show_all) { int r; uint64_t realtime; @@ -49,55 +92,110 @@ static int output_short(sd_journal *j, unsigned line, bool show_all) { const void *data; size_t length; size_t n = 0; + char *hostname = NULL, *tag = NULL, *comm = NULL, *pid = NULL, *message = NULL; + size_t hostname_len = 0, tag_len = 0, comm_len = 0, pid_len = 0, message_len = 0; assert(j); + SD_JOURNAL_FOREACH_DATA(j, data, length) { + + r = parse_field(data, length, "_HOSTNAME=", &hostname, &hostname_len); + if (r < 0) + goto finish; + else if (r > 0) + continue; + + r = parse_field(data, length, "SYSLOG_TAG=", &tag, &tag_len); + if (r < 0) + goto finish; + else if (r > 0) + continue; + + r = parse_field(data, length, "_COMM=", &comm, &comm_len); + if (r < 0) + goto finish; + else if (r > 0) + continue; + + r = parse_field(data, length, "_PID=", &pid, &pid_len); + if (r < 0) + goto finish; + else if (r > 0) + continue; + + r = parse_field(data, length, "MESSAGE=", &message, &message_len); + if (r < 0) + goto finish; + } + + if (!message) { + r = 0; + goto finish; + } + r = sd_journal_get_realtime_usec(j, &realtime); if (r < 0) { log_error("Failed to get realtime: %s", strerror(-r)); - return r; + goto finish; } t = (time_t) (realtime / USEC_PER_SEC); if (strftime(buf, sizeof(buf), "%b %d %H:%M:%S", localtime_r(&t, &tm)) <= 0) { log_error("Failed to format time."); - return -EINVAL; + goto finish; } fputs(buf, stdout); n += strlen(buf); - if (sd_journal_get_data(j, "_HOSTNAME", &data, &length) >= 0 && - (show_all || (!contains_unprintable(data, length) && - length < PRINT_THRESHOLD))) { - printf(" %.*s", (int) length - 10, ((const char*) data) + 10); - n += length - 10 + 1; + if (hostname && shall_print(show_all, hostname, hostname_len)) { + printf(" %.*s", (int) hostname_len, hostname); + n += hostname_len + 1; } - if (sd_journal_get_data(j, "MESSAGE", &data, &length) >= 0) { - if (show_all) - printf(" %.*s", (int) length - 8, ((const char*) data) + 8); - else if (contains_unprintable(data, length)) - fputs(" [blob data]", stdout); - else if (length - 8 + n < columns()) - printf(" %.*s", (int) length - 8, ((const char*) data) + 8); - else if (n < columns()) { - char *e; + if (tag && shall_print(show_all, tag, tag_len)) { + printf(" %.*s", (int) tag_len, tag); + n += tag_len + 1; + } else if (comm && shall_print(show_all, comm, comm_len)) { + printf(" %.*s", (int) comm_len, comm); + n += comm_len + 1; + } - e = ellipsize_mem((const char *) data + 8, length - 8, columns() - n - 2, 90); + if (pid && shall_print(show_all, pid, pid_len)) { + printf("[%.*s]", (int) pid_len, pid); + n += pid_len + 2; + } - if (!e) - printf(" %.*s", (int) length - 8, ((const char*) data) + 8); - else - printf(" %s", e); + if (show_all) + printf(": %.*s\n", (int) message_len, message); + else if (contains_unprintable(message, message_len)) + fputs(": [blob data]\n", stdout); + else if (message_len + n < columns()) + printf(": %.*s\n", (int) message_len, message); + else if (n < columns()) { + char *e; - free(e); - } - } + e = ellipsize_mem(message, message_len, columns() - n - 2, 90); - fputc('\n', stdout); + if (!e) + printf(": %.*s\n", (int) message_len, message); + else + printf(": %s", e); - return 0; + free(e); + } else + fputs("\n", stdout); + + r = 0; + +finish: + free(hostname); + free(tag); + free(comm); + free(pid); + free(message); + + return r; } static int output_verbose(sd_journal *j, unsigned line, bool show_all) { |