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Avoid unsigned integer underflow on empty input.

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This commit is contained in:
Nick Mathewson 2018-05-07 13:56:39 -04:00
parent dbc80ad19b
commit a17dc0875a
1 changed files with 6 additions and 0 deletions
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6
src/or/dirserv.c
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@ -2641,6 +2641,12 @@ measured_bw_line_parse(measured_bw_line_t *out, const char *orig_line)
int got_node_id = 0; int got_node_id = 0;
char *strtok_state; /* lame sauce d'jour */ char *strtok_state; /* lame sauce d'jour */
if (strlen(line) == 0) {
log_warn(LD_DIRSERV, "Empty line in bandwidth file");
tor_free(line);
return -1;
}
/* Remove end of line character, so that is not part of the token */ /* Remove end of line character, so that is not part of the token */
if (line[strlen(line) - 1] == '\n') { if (line[strlen(line) - 1] == '\n') {
line[strlen(line) - 1] = '\0'; line[strlen(line) - 1] = '\0';